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![Jakub Kicinski](/assets/img/avatar_default.png)
This reverts commit5e927a9f4b
, reversing changes made tocfc1d91a7d
. The discussion is still ongoing so let's remove the uAPI until the discussion settles. Link: https://lore.kernel.org/all/20220425090021.32e9a98f@kernel.org/ Reviewed-by: Ido Schimmel <idosch@nvidia.com> Link: https://lore.kernel.org/r/20220504154037.539442-1-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
12155 lines
314 KiB
C
12155 lines
314 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* net/core/devlink.c - Network physical/parent device Netlink interface
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*
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* Heavily inspired by net/wireless/
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* Copyright (c) 2016 Mellanox Technologies. All rights reserved.
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* Copyright (c) 2016 Jiri Pirko <jiri@mellanox.com>
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*/
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#include <linux/etherdevice.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/types.h>
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#include <linux/slab.h>
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#include <linux/gfp.h>
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#include <linux/device.h>
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#include <linux/list.h>
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#include <linux/netdevice.h>
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#include <linux/spinlock.h>
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#include <linux/refcount.h>
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#include <linux/workqueue.h>
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#include <linux/u64_stats_sync.h>
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#include <linux/timekeeping.h>
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#include <rdma/ib_verbs.h>
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#include <net/netlink.h>
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#include <net/genetlink.h>
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#include <net/rtnetlink.h>
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#include <net/net_namespace.h>
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#include <net/sock.h>
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#include <net/devlink.h>
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#define CREATE_TRACE_POINTS
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#include <trace/events/devlink.h>
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#define DEVLINK_RELOAD_STATS_ARRAY_SIZE \
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(__DEVLINK_RELOAD_LIMIT_MAX * __DEVLINK_RELOAD_ACTION_MAX)
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struct devlink_dev_stats {
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u32 reload_stats[DEVLINK_RELOAD_STATS_ARRAY_SIZE];
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u32 remote_reload_stats[DEVLINK_RELOAD_STATS_ARRAY_SIZE];
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};
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struct devlink {
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u32 index;
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struct list_head port_list;
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struct list_head rate_list;
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struct list_head sb_list;
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struct list_head dpipe_table_list;
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struct list_head resource_list;
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struct list_head param_list;
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struct list_head region_list;
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struct list_head reporter_list;
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struct mutex reporters_lock; /* protects reporter_list */
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struct devlink_dpipe_headers *dpipe_headers;
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struct list_head trap_list;
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struct list_head trap_group_list;
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struct list_head trap_policer_list;
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struct list_head linecard_list;
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struct mutex linecards_lock; /* protects linecard_list */
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const struct devlink_ops *ops;
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u64 features;
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struct xarray snapshot_ids;
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struct devlink_dev_stats stats;
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struct device *dev;
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possible_net_t _net;
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/* Serializes access to devlink instance specific objects such as
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* port, sb, dpipe, resource, params, region, traps and more.
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*/
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struct mutex lock;
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u8 reload_failed:1;
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refcount_t refcount;
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struct completion comp;
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char priv[] __aligned(NETDEV_ALIGN);
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};
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struct devlink_linecard_ops;
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struct devlink_linecard_type;
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struct devlink_linecard {
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struct list_head list;
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struct devlink *devlink;
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unsigned int index;
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refcount_t refcount;
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const struct devlink_linecard_ops *ops;
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void *priv;
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enum devlink_linecard_state state;
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struct mutex state_lock; /* Protects state */
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const char *type;
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struct devlink_linecard_type *types;
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unsigned int types_count;
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};
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/**
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* struct devlink_resource - devlink resource
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* @name: name of the resource
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* @id: id, per devlink instance
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* @size: size of the resource
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* @size_new: updated size of the resource, reload is needed
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* @size_valid: valid in case the total size of the resource is valid
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* including its children
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* @parent: parent resource
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* @size_params: size parameters
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* @list: parent list
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* @resource_list: list of child resources
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* @occ_get: occupancy getter callback
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* @occ_get_priv: occupancy getter callback priv
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*/
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struct devlink_resource {
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const char *name;
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u64 id;
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u64 size;
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u64 size_new;
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bool size_valid;
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struct devlink_resource *parent;
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struct devlink_resource_size_params size_params;
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struct list_head list;
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struct list_head resource_list;
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devlink_resource_occ_get_t *occ_get;
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void *occ_get_priv;
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};
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void *devlink_priv(struct devlink *devlink)
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{
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return &devlink->priv;
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}
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EXPORT_SYMBOL_GPL(devlink_priv);
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struct devlink *priv_to_devlink(void *priv)
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{
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return container_of(priv, struct devlink, priv);
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}
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EXPORT_SYMBOL_GPL(priv_to_devlink);
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struct device *devlink_to_dev(const struct devlink *devlink)
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{
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return devlink->dev;
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}
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EXPORT_SYMBOL_GPL(devlink_to_dev);
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static struct devlink_dpipe_field devlink_dpipe_fields_ethernet[] = {
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{
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.name = "destination mac",
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.id = DEVLINK_DPIPE_FIELD_ETHERNET_DST_MAC,
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.bitwidth = 48,
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},
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};
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struct devlink_dpipe_header devlink_dpipe_header_ethernet = {
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.name = "ethernet",
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.id = DEVLINK_DPIPE_HEADER_ETHERNET,
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.fields = devlink_dpipe_fields_ethernet,
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.fields_count = ARRAY_SIZE(devlink_dpipe_fields_ethernet),
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.global = true,
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};
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EXPORT_SYMBOL_GPL(devlink_dpipe_header_ethernet);
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static struct devlink_dpipe_field devlink_dpipe_fields_ipv4[] = {
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{
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.name = "destination ip",
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.id = DEVLINK_DPIPE_FIELD_IPV4_DST_IP,
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.bitwidth = 32,
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},
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};
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struct devlink_dpipe_header devlink_dpipe_header_ipv4 = {
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.name = "ipv4",
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.id = DEVLINK_DPIPE_HEADER_IPV4,
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.fields = devlink_dpipe_fields_ipv4,
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.fields_count = ARRAY_SIZE(devlink_dpipe_fields_ipv4),
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.global = true,
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};
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EXPORT_SYMBOL_GPL(devlink_dpipe_header_ipv4);
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static struct devlink_dpipe_field devlink_dpipe_fields_ipv6[] = {
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{
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.name = "destination ip",
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.id = DEVLINK_DPIPE_FIELD_IPV6_DST_IP,
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.bitwidth = 128,
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},
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};
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struct devlink_dpipe_header devlink_dpipe_header_ipv6 = {
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.name = "ipv6",
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.id = DEVLINK_DPIPE_HEADER_IPV6,
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.fields = devlink_dpipe_fields_ipv6,
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.fields_count = ARRAY_SIZE(devlink_dpipe_fields_ipv6),
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.global = true,
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};
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EXPORT_SYMBOL_GPL(devlink_dpipe_header_ipv6);
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EXPORT_TRACEPOINT_SYMBOL_GPL(devlink_hwmsg);
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EXPORT_TRACEPOINT_SYMBOL_GPL(devlink_hwerr);
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EXPORT_TRACEPOINT_SYMBOL_GPL(devlink_trap_report);
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static const struct nla_policy devlink_function_nl_policy[DEVLINK_PORT_FUNCTION_ATTR_MAX + 1] = {
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[DEVLINK_PORT_FUNCTION_ATTR_HW_ADDR] = { .type = NLA_BINARY },
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[DEVLINK_PORT_FN_ATTR_STATE] =
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NLA_POLICY_RANGE(NLA_U8, DEVLINK_PORT_FN_STATE_INACTIVE,
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DEVLINK_PORT_FN_STATE_ACTIVE),
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};
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static DEFINE_XARRAY_FLAGS(devlinks, XA_FLAGS_ALLOC);
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#define DEVLINK_REGISTERED XA_MARK_1
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/* devlink instances are open to the access from the user space after
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* devlink_register() call. Such logical barrier allows us to have certain
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* expectations related to locking.
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*
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* Before *_register() - we are in initialization stage and no parallel
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* access possible to the devlink instance. All drivers perform that phase
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* by implicitly holding device_lock.
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*
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* After *_register() - users and driver can access devlink instance at
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* the same time.
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*/
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#define ASSERT_DEVLINK_REGISTERED(d) \
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WARN_ON_ONCE(!xa_get_mark(&devlinks, (d)->index, DEVLINK_REGISTERED))
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#define ASSERT_DEVLINK_NOT_REGISTERED(d) \
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WARN_ON_ONCE(xa_get_mark(&devlinks, (d)->index, DEVLINK_REGISTERED))
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/* devlink_mutex
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*
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* An overall lock guarding every operation coming from userspace.
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* It also guards devlink devices list and it is taken when
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* driver registers/unregisters it.
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*/
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static DEFINE_MUTEX(devlink_mutex);
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struct net *devlink_net(const struct devlink *devlink)
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{
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return read_pnet(&devlink->_net);
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}
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EXPORT_SYMBOL_GPL(devlink_net);
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void devlink_put(struct devlink *devlink)
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{
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if (refcount_dec_and_test(&devlink->refcount))
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complete(&devlink->comp);
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}
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struct devlink *__must_check devlink_try_get(struct devlink *devlink)
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{
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if (refcount_inc_not_zero(&devlink->refcount))
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return devlink;
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return NULL;
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}
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void devl_assert_locked(struct devlink *devlink)
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{
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lockdep_assert_held(&devlink->lock);
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}
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EXPORT_SYMBOL_GPL(devl_assert_locked);
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#ifdef CONFIG_LOCKDEP
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/* For use in conjunction with LOCKDEP only e.g. rcu_dereference_protected() */
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bool devl_lock_is_held(struct devlink *devlink)
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{
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return lockdep_is_held(&devlink->lock);
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}
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EXPORT_SYMBOL_GPL(devl_lock_is_held);
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#endif
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void devl_lock(struct devlink *devlink)
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{
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mutex_lock(&devlink->lock);
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}
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EXPORT_SYMBOL_GPL(devl_lock);
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void devl_unlock(struct devlink *devlink)
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{
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mutex_unlock(&devlink->lock);
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}
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EXPORT_SYMBOL_GPL(devl_unlock);
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static struct devlink *devlink_get_from_attrs(struct net *net,
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struct nlattr **attrs)
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{
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struct devlink *devlink;
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unsigned long index;
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bool found = false;
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char *busname;
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char *devname;
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if (!attrs[DEVLINK_ATTR_BUS_NAME] || !attrs[DEVLINK_ATTR_DEV_NAME])
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return ERR_PTR(-EINVAL);
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busname = nla_data(attrs[DEVLINK_ATTR_BUS_NAME]);
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devname = nla_data(attrs[DEVLINK_ATTR_DEV_NAME]);
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lockdep_assert_held(&devlink_mutex);
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xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) {
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if (strcmp(devlink->dev->bus->name, busname) == 0 &&
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strcmp(dev_name(devlink->dev), devname) == 0 &&
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net_eq(devlink_net(devlink), net)) {
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found = true;
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break;
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}
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}
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if (!found || !devlink_try_get(devlink))
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devlink = ERR_PTR(-ENODEV);
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return devlink;
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}
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static struct devlink_port *devlink_port_get_by_index(struct devlink *devlink,
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unsigned int port_index)
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{
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struct devlink_port *devlink_port;
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list_for_each_entry(devlink_port, &devlink->port_list, list) {
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if (devlink_port->index == port_index)
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return devlink_port;
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}
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return NULL;
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}
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static bool devlink_port_index_exists(struct devlink *devlink,
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unsigned int port_index)
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{
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return devlink_port_get_by_index(devlink, port_index);
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}
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static struct devlink_port *devlink_port_get_from_attrs(struct devlink *devlink,
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struct nlattr **attrs)
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{
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if (attrs[DEVLINK_ATTR_PORT_INDEX]) {
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u32 port_index = nla_get_u32(attrs[DEVLINK_ATTR_PORT_INDEX]);
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struct devlink_port *devlink_port;
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devlink_port = devlink_port_get_by_index(devlink, port_index);
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if (!devlink_port)
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return ERR_PTR(-ENODEV);
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return devlink_port;
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}
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return ERR_PTR(-EINVAL);
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}
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static struct devlink_port *devlink_port_get_from_info(struct devlink *devlink,
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struct genl_info *info)
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{
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return devlink_port_get_from_attrs(devlink, info->attrs);
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}
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static inline bool
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devlink_rate_is_leaf(struct devlink_rate *devlink_rate)
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{
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return devlink_rate->type == DEVLINK_RATE_TYPE_LEAF;
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}
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static inline bool
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devlink_rate_is_node(struct devlink_rate *devlink_rate)
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{
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return devlink_rate->type == DEVLINK_RATE_TYPE_NODE;
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}
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static struct devlink_rate *
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devlink_rate_leaf_get_from_info(struct devlink *devlink, struct genl_info *info)
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{
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struct devlink_rate *devlink_rate;
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struct devlink_port *devlink_port;
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devlink_port = devlink_port_get_from_attrs(devlink, info->attrs);
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if (IS_ERR(devlink_port))
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return ERR_CAST(devlink_port);
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devlink_rate = devlink_port->devlink_rate;
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return devlink_rate ?: ERR_PTR(-ENODEV);
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}
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static struct devlink_rate *
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devlink_rate_node_get_by_name(struct devlink *devlink, const char *node_name)
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{
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static struct devlink_rate *devlink_rate;
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list_for_each_entry(devlink_rate, &devlink->rate_list, list) {
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if (devlink_rate_is_node(devlink_rate) &&
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!strcmp(node_name, devlink_rate->name))
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return devlink_rate;
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}
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return ERR_PTR(-ENODEV);
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}
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static struct devlink_rate *
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devlink_rate_node_get_from_attrs(struct devlink *devlink, struct nlattr **attrs)
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{
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const char *rate_node_name;
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size_t len;
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if (!attrs[DEVLINK_ATTR_RATE_NODE_NAME])
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return ERR_PTR(-EINVAL);
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rate_node_name = nla_data(attrs[DEVLINK_ATTR_RATE_NODE_NAME]);
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len = strlen(rate_node_name);
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/* Name cannot be empty or decimal number */
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if (!len || strspn(rate_node_name, "0123456789") == len)
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return ERR_PTR(-EINVAL);
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return devlink_rate_node_get_by_name(devlink, rate_node_name);
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}
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static struct devlink_rate *
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devlink_rate_node_get_from_info(struct devlink *devlink, struct genl_info *info)
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{
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return devlink_rate_node_get_from_attrs(devlink, info->attrs);
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}
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static struct devlink_rate *
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devlink_rate_get_from_info(struct devlink *devlink, struct genl_info *info)
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{
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struct nlattr **attrs = info->attrs;
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if (attrs[DEVLINK_ATTR_PORT_INDEX])
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return devlink_rate_leaf_get_from_info(devlink, info);
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else if (attrs[DEVLINK_ATTR_RATE_NODE_NAME])
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return devlink_rate_node_get_from_info(devlink, info);
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else
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return ERR_PTR(-EINVAL);
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}
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static struct devlink_linecard *
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devlink_linecard_get_by_index(struct devlink *devlink,
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unsigned int linecard_index)
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{
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struct devlink_linecard *devlink_linecard;
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list_for_each_entry(devlink_linecard, &devlink->linecard_list, list) {
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if (devlink_linecard->index == linecard_index)
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return devlink_linecard;
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}
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return NULL;
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}
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static bool devlink_linecard_index_exists(struct devlink *devlink,
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unsigned int linecard_index)
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{
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return devlink_linecard_get_by_index(devlink, linecard_index);
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}
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static struct devlink_linecard *
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devlink_linecard_get_from_attrs(struct devlink *devlink, struct nlattr **attrs)
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{
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if (attrs[DEVLINK_ATTR_LINECARD_INDEX]) {
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u32 linecard_index = nla_get_u32(attrs[DEVLINK_ATTR_LINECARD_INDEX]);
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struct devlink_linecard *linecard;
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mutex_lock(&devlink->linecards_lock);
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linecard = devlink_linecard_get_by_index(devlink, linecard_index);
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if (linecard)
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refcount_inc(&linecard->refcount);
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mutex_unlock(&devlink->linecards_lock);
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if (!linecard)
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return ERR_PTR(-ENODEV);
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return linecard;
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}
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return ERR_PTR(-EINVAL);
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}
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static struct devlink_linecard *
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devlink_linecard_get_from_info(struct devlink *devlink, struct genl_info *info)
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{
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return devlink_linecard_get_from_attrs(devlink, info->attrs);
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}
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static void devlink_linecard_put(struct devlink_linecard *linecard)
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{
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if (refcount_dec_and_test(&linecard->refcount)) {
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mutex_destroy(&linecard->state_lock);
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kfree(linecard);
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}
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}
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struct devlink_sb {
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struct list_head list;
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unsigned int index;
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u32 size;
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u16 ingress_pools_count;
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u16 egress_pools_count;
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u16 ingress_tc_count;
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u16 egress_tc_count;
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};
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static u16 devlink_sb_pool_count(struct devlink_sb *devlink_sb)
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{
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return devlink_sb->ingress_pools_count + devlink_sb->egress_pools_count;
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}
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static struct devlink_sb *devlink_sb_get_by_index(struct devlink *devlink,
|
|
unsigned int sb_index)
|
|
{
|
|
struct devlink_sb *devlink_sb;
|
|
|
|
list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
|
|
if (devlink_sb->index == sb_index)
|
|
return devlink_sb;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
static bool devlink_sb_index_exists(struct devlink *devlink,
|
|
unsigned int sb_index)
|
|
{
|
|
return devlink_sb_get_by_index(devlink, sb_index);
|
|
}
|
|
|
|
static struct devlink_sb *devlink_sb_get_from_attrs(struct devlink *devlink,
|
|
struct nlattr **attrs)
|
|
{
|
|
if (attrs[DEVLINK_ATTR_SB_INDEX]) {
|
|
u32 sb_index = nla_get_u32(attrs[DEVLINK_ATTR_SB_INDEX]);
|
|
struct devlink_sb *devlink_sb;
|
|
|
|
devlink_sb = devlink_sb_get_by_index(devlink, sb_index);
|
|
if (!devlink_sb)
|
|
return ERR_PTR(-ENODEV);
|
|
return devlink_sb;
|
|
}
|
|
return ERR_PTR(-EINVAL);
|
|
}
|
|
|
|
static struct devlink_sb *devlink_sb_get_from_info(struct devlink *devlink,
|
|
struct genl_info *info)
|
|
{
|
|
return devlink_sb_get_from_attrs(devlink, info->attrs);
|
|
}
|
|
|
|
static int devlink_sb_pool_index_get_from_attrs(struct devlink_sb *devlink_sb,
|
|
struct nlattr **attrs,
|
|
u16 *p_pool_index)
|
|
{
|
|
u16 val;
|
|
|
|
if (!attrs[DEVLINK_ATTR_SB_POOL_INDEX])
|
|
return -EINVAL;
|
|
|
|
val = nla_get_u16(attrs[DEVLINK_ATTR_SB_POOL_INDEX]);
|
|
if (val >= devlink_sb_pool_count(devlink_sb))
|
|
return -EINVAL;
|
|
*p_pool_index = val;
|
|
return 0;
|
|
}
|
|
|
|
static int devlink_sb_pool_index_get_from_info(struct devlink_sb *devlink_sb,
|
|
struct genl_info *info,
|
|
u16 *p_pool_index)
|
|
{
|
|
return devlink_sb_pool_index_get_from_attrs(devlink_sb, info->attrs,
|
|
p_pool_index);
|
|
}
|
|
|
|
static int
|
|
devlink_sb_pool_type_get_from_attrs(struct nlattr **attrs,
|
|
enum devlink_sb_pool_type *p_pool_type)
|
|
{
|
|
u8 val;
|
|
|
|
if (!attrs[DEVLINK_ATTR_SB_POOL_TYPE])
|
|
return -EINVAL;
|
|
|
|
val = nla_get_u8(attrs[DEVLINK_ATTR_SB_POOL_TYPE]);
|
|
if (val != DEVLINK_SB_POOL_TYPE_INGRESS &&
|
|
val != DEVLINK_SB_POOL_TYPE_EGRESS)
|
|
return -EINVAL;
|
|
*p_pool_type = val;
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
devlink_sb_pool_type_get_from_info(struct genl_info *info,
|
|
enum devlink_sb_pool_type *p_pool_type)
|
|
{
|
|
return devlink_sb_pool_type_get_from_attrs(info->attrs, p_pool_type);
|
|
}
|
|
|
|
static int
|
|
devlink_sb_th_type_get_from_attrs(struct nlattr **attrs,
|
|
enum devlink_sb_threshold_type *p_th_type)
|
|
{
|
|
u8 val;
|
|
|
|
if (!attrs[DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE])
|
|
return -EINVAL;
|
|
|
|
val = nla_get_u8(attrs[DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE]);
|
|
if (val != DEVLINK_SB_THRESHOLD_TYPE_STATIC &&
|
|
val != DEVLINK_SB_THRESHOLD_TYPE_DYNAMIC)
|
|
return -EINVAL;
|
|
*p_th_type = val;
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
devlink_sb_th_type_get_from_info(struct genl_info *info,
|
|
enum devlink_sb_threshold_type *p_th_type)
|
|
{
|
|
return devlink_sb_th_type_get_from_attrs(info->attrs, p_th_type);
|
|
}
|
|
|
|
static int
|
|
devlink_sb_tc_index_get_from_attrs(struct devlink_sb *devlink_sb,
|
|
struct nlattr **attrs,
|
|
enum devlink_sb_pool_type pool_type,
|
|
u16 *p_tc_index)
|
|
{
|
|
u16 val;
|
|
|
|
if (!attrs[DEVLINK_ATTR_SB_TC_INDEX])
|
|
return -EINVAL;
|
|
|
|
val = nla_get_u16(attrs[DEVLINK_ATTR_SB_TC_INDEX]);
|
|
if (pool_type == DEVLINK_SB_POOL_TYPE_INGRESS &&
|
|
val >= devlink_sb->ingress_tc_count)
|
|
return -EINVAL;
|
|
if (pool_type == DEVLINK_SB_POOL_TYPE_EGRESS &&
|
|
val >= devlink_sb->egress_tc_count)
|
|
return -EINVAL;
|
|
*p_tc_index = val;
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
devlink_sb_tc_index_get_from_info(struct devlink_sb *devlink_sb,
|
|
struct genl_info *info,
|
|
enum devlink_sb_pool_type pool_type,
|
|
u16 *p_tc_index)
|
|
{
|
|
return devlink_sb_tc_index_get_from_attrs(devlink_sb, info->attrs,
|
|
pool_type, p_tc_index);
|
|
}
|
|
|
|
struct devlink_region {
|
|
struct devlink *devlink;
|
|
struct devlink_port *port;
|
|
struct list_head list;
|
|
union {
|
|
const struct devlink_region_ops *ops;
|
|
const struct devlink_port_region_ops *port_ops;
|
|
};
|
|
struct list_head snapshot_list;
|
|
u32 max_snapshots;
|
|
u32 cur_snapshots;
|
|
u64 size;
|
|
};
|
|
|
|
struct devlink_snapshot {
|
|
struct list_head list;
|
|
struct devlink_region *region;
|
|
u8 *data;
|
|
u32 id;
|
|
};
|
|
|
|
static struct devlink_region *
|
|
devlink_region_get_by_name(struct devlink *devlink, const char *region_name)
|
|
{
|
|
struct devlink_region *region;
|
|
|
|
list_for_each_entry(region, &devlink->region_list, list)
|
|
if (!strcmp(region->ops->name, region_name))
|
|
return region;
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static struct devlink_region *
|
|
devlink_port_region_get_by_name(struct devlink_port *port,
|
|
const char *region_name)
|
|
{
|
|
struct devlink_region *region;
|
|
|
|
list_for_each_entry(region, &port->region_list, list)
|
|
if (!strcmp(region->ops->name, region_name))
|
|
return region;
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static struct devlink_snapshot *
|
|
devlink_region_snapshot_get_by_id(struct devlink_region *region, u32 id)
|
|
{
|
|
struct devlink_snapshot *snapshot;
|
|
|
|
list_for_each_entry(snapshot, ®ion->snapshot_list, list)
|
|
if (snapshot->id == id)
|
|
return snapshot;
|
|
|
|
return NULL;
|
|
}
|
|
|
|
#define DEVLINK_NL_FLAG_NEED_PORT BIT(0)
|
|
#define DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT BIT(1)
|
|
#define DEVLINK_NL_FLAG_NEED_RATE BIT(2)
|
|
#define DEVLINK_NL_FLAG_NEED_RATE_NODE BIT(3)
|
|
#define DEVLINK_NL_FLAG_NEED_LINECARD BIT(4)
|
|
|
|
/* The per devlink instance lock is taken by default in the pre-doit
|
|
* operation, yet several commands do not require this. The global
|
|
* devlink lock is taken and protects from disruption by user-calls.
|
|
*/
|
|
#define DEVLINK_NL_FLAG_NO_LOCK BIT(5)
|
|
|
|
static int devlink_nl_pre_doit(const struct genl_ops *ops,
|
|
struct sk_buff *skb, struct genl_info *info)
|
|
{
|
|
struct devlink_linecard *linecard;
|
|
struct devlink_port *devlink_port;
|
|
struct devlink *devlink;
|
|
int err;
|
|
|
|
mutex_lock(&devlink_mutex);
|
|
devlink = devlink_get_from_attrs(genl_info_net(info), info->attrs);
|
|
if (IS_ERR(devlink)) {
|
|
mutex_unlock(&devlink_mutex);
|
|
return PTR_ERR(devlink);
|
|
}
|
|
if (~ops->internal_flags & DEVLINK_NL_FLAG_NO_LOCK)
|
|
mutex_lock(&devlink->lock);
|
|
info->user_ptr[0] = devlink;
|
|
if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_PORT) {
|
|
devlink_port = devlink_port_get_from_info(devlink, info);
|
|
if (IS_ERR(devlink_port)) {
|
|
err = PTR_ERR(devlink_port);
|
|
goto unlock;
|
|
}
|
|
info->user_ptr[1] = devlink_port;
|
|
} else if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT) {
|
|
devlink_port = devlink_port_get_from_info(devlink, info);
|
|
if (!IS_ERR(devlink_port))
|
|
info->user_ptr[1] = devlink_port;
|
|
} else if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_RATE) {
|
|
struct devlink_rate *devlink_rate;
|
|
|
|
devlink_rate = devlink_rate_get_from_info(devlink, info);
|
|
if (IS_ERR(devlink_rate)) {
|
|
err = PTR_ERR(devlink_rate);
|
|
goto unlock;
|
|
}
|
|
info->user_ptr[1] = devlink_rate;
|
|
} else if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_RATE_NODE) {
|
|
struct devlink_rate *rate_node;
|
|
|
|
rate_node = devlink_rate_node_get_from_info(devlink, info);
|
|
if (IS_ERR(rate_node)) {
|
|
err = PTR_ERR(rate_node);
|
|
goto unlock;
|
|
}
|
|
info->user_ptr[1] = rate_node;
|
|
} else if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_LINECARD) {
|
|
linecard = devlink_linecard_get_from_info(devlink, info);
|
|
if (IS_ERR(linecard)) {
|
|
err = PTR_ERR(linecard);
|
|
goto unlock;
|
|
}
|
|
info->user_ptr[1] = linecard;
|
|
}
|
|
return 0;
|
|
|
|
unlock:
|
|
if (~ops->internal_flags & DEVLINK_NL_FLAG_NO_LOCK)
|
|
mutex_unlock(&devlink->lock);
|
|
devlink_put(devlink);
|
|
mutex_unlock(&devlink_mutex);
|
|
return err;
|
|
}
|
|
|
|
static void devlink_nl_post_doit(const struct genl_ops *ops,
|
|
struct sk_buff *skb, struct genl_info *info)
|
|
{
|
|
struct devlink_linecard *linecard;
|
|
struct devlink *devlink;
|
|
|
|
devlink = info->user_ptr[0];
|
|
if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_LINECARD) {
|
|
linecard = info->user_ptr[1];
|
|
devlink_linecard_put(linecard);
|
|
}
|
|
if (~ops->internal_flags & DEVLINK_NL_FLAG_NO_LOCK)
|
|
mutex_unlock(&devlink->lock);
|
|
devlink_put(devlink);
|
|
mutex_unlock(&devlink_mutex);
|
|
}
|
|
|
|
static struct genl_family devlink_nl_family;
|
|
|
|
enum devlink_multicast_groups {
|
|
DEVLINK_MCGRP_CONFIG,
|
|
};
|
|
|
|
static const struct genl_multicast_group devlink_nl_mcgrps[] = {
|
|
[DEVLINK_MCGRP_CONFIG] = { .name = DEVLINK_GENL_MCGRP_CONFIG_NAME },
|
|
};
|
|
|
|
static int devlink_nl_put_handle(struct sk_buff *msg, struct devlink *devlink)
|
|
{
|
|
if (nla_put_string(msg, DEVLINK_ATTR_BUS_NAME, devlink->dev->bus->name))
|
|
return -EMSGSIZE;
|
|
if (nla_put_string(msg, DEVLINK_ATTR_DEV_NAME, dev_name(devlink->dev)))
|
|
return -EMSGSIZE;
|
|
return 0;
|
|
}
|
|
|
|
struct devlink_reload_combination {
|
|
enum devlink_reload_action action;
|
|
enum devlink_reload_limit limit;
|
|
};
|
|
|
|
static const struct devlink_reload_combination devlink_reload_invalid_combinations[] = {
|
|
{
|
|
/* can't reinitialize driver with no down time */
|
|
.action = DEVLINK_RELOAD_ACTION_DRIVER_REINIT,
|
|
.limit = DEVLINK_RELOAD_LIMIT_NO_RESET,
|
|
},
|
|
};
|
|
|
|
static bool
|
|
devlink_reload_combination_is_invalid(enum devlink_reload_action action,
|
|
enum devlink_reload_limit limit)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(devlink_reload_invalid_combinations); i++)
|
|
if (devlink_reload_invalid_combinations[i].action == action &&
|
|
devlink_reload_invalid_combinations[i].limit == limit)
|
|
return true;
|
|
return false;
|
|
}
|
|
|
|
static bool
|
|
devlink_reload_action_is_supported(struct devlink *devlink, enum devlink_reload_action action)
|
|
{
|
|
return test_bit(action, &devlink->ops->reload_actions);
|
|
}
|
|
|
|
static bool
|
|
devlink_reload_limit_is_supported(struct devlink *devlink, enum devlink_reload_limit limit)
|
|
{
|
|
return test_bit(limit, &devlink->ops->reload_limits);
|
|
}
|
|
|
|
static int devlink_reload_stat_put(struct sk_buff *msg,
|
|
enum devlink_reload_limit limit, u32 value)
|
|
{
|
|
struct nlattr *reload_stats_entry;
|
|
|
|
reload_stats_entry = nla_nest_start(msg, DEVLINK_ATTR_RELOAD_STATS_ENTRY);
|
|
if (!reload_stats_entry)
|
|
return -EMSGSIZE;
|
|
|
|
if (nla_put_u8(msg, DEVLINK_ATTR_RELOAD_STATS_LIMIT, limit) ||
|
|
nla_put_u32(msg, DEVLINK_ATTR_RELOAD_STATS_VALUE, value))
|
|
goto nla_put_failure;
|
|
nla_nest_end(msg, reload_stats_entry);
|
|
return 0;
|
|
|
|
nla_put_failure:
|
|
nla_nest_cancel(msg, reload_stats_entry);
|
|
return -EMSGSIZE;
|
|
}
|
|
|
|
static int devlink_reload_stats_put(struct sk_buff *msg, struct devlink *devlink, bool is_remote)
|
|
{
|
|
struct nlattr *reload_stats_attr, *act_info, *act_stats;
|
|
int i, j, stat_idx;
|
|
u32 value;
|
|
|
|
if (!is_remote)
|
|
reload_stats_attr = nla_nest_start(msg, DEVLINK_ATTR_RELOAD_STATS);
|
|
else
|
|
reload_stats_attr = nla_nest_start(msg, DEVLINK_ATTR_REMOTE_RELOAD_STATS);
|
|
|
|
if (!reload_stats_attr)
|
|
return -EMSGSIZE;
|
|
|
|
for (i = 0; i <= DEVLINK_RELOAD_ACTION_MAX; i++) {
|
|
if ((!is_remote &&
|
|
!devlink_reload_action_is_supported(devlink, i)) ||
|
|
i == DEVLINK_RELOAD_ACTION_UNSPEC)
|
|
continue;
|
|
act_info = nla_nest_start(msg, DEVLINK_ATTR_RELOAD_ACTION_INFO);
|
|
if (!act_info)
|
|
goto nla_put_failure;
|
|
|
|
if (nla_put_u8(msg, DEVLINK_ATTR_RELOAD_ACTION, i))
|
|
goto action_info_nest_cancel;
|
|
act_stats = nla_nest_start(msg, DEVLINK_ATTR_RELOAD_ACTION_STATS);
|
|
if (!act_stats)
|
|
goto action_info_nest_cancel;
|
|
|
|
for (j = 0; j <= DEVLINK_RELOAD_LIMIT_MAX; j++) {
|
|
/* Remote stats are shown even if not locally supported.
|
|
* Stats of actions with unspecified limit are shown
|
|
* though drivers don't need to register unspecified
|
|
* limit.
|
|
*/
|
|
if ((!is_remote && j != DEVLINK_RELOAD_LIMIT_UNSPEC &&
|
|
!devlink_reload_limit_is_supported(devlink, j)) ||
|
|
devlink_reload_combination_is_invalid(i, j))
|
|
continue;
|
|
|
|
stat_idx = j * __DEVLINK_RELOAD_ACTION_MAX + i;
|
|
if (!is_remote)
|
|
value = devlink->stats.reload_stats[stat_idx];
|
|
else
|
|
value = devlink->stats.remote_reload_stats[stat_idx];
|
|
if (devlink_reload_stat_put(msg, j, value))
|
|
goto action_stats_nest_cancel;
|
|
}
|
|
nla_nest_end(msg, act_stats);
|
|
nla_nest_end(msg, act_info);
|
|
}
|
|
nla_nest_end(msg, reload_stats_attr);
|
|
return 0;
|
|
|
|
action_stats_nest_cancel:
|
|
nla_nest_cancel(msg, act_stats);
|
|
action_info_nest_cancel:
|
|
nla_nest_cancel(msg, act_info);
|
|
nla_put_failure:
|
|
nla_nest_cancel(msg, reload_stats_attr);
|
|
return -EMSGSIZE;
|
|
}
|
|
|
|
static int devlink_nl_fill(struct sk_buff *msg, struct devlink *devlink,
|
|
enum devlink_command cmd, u32 portid,
|
|
u32 seq, int flags)
|
|
{
|
|
struct nlattr *dev_stats;
|
|
void *hdr;
|
|
|
|
hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
|
|
if (!hdr)
|
|
return -EMSGSIZE;
|
|
|
|
if (devlink_nl_put_handle(msg, devlink))
|
|
goto nla_put_failure;
|
|
if (nla_put_u8(msg, DEVLINK_ATTR_RELOAD_FAILED, devlink->reload_failed))
|
|
goto nla_put_failure;
|
|
|
|
dev_stats = nla_nest_start(msg, DEVLINK_ATTR_DEV_STATS);
|
|
if (!dev_stats)
|
|
goto nla_put_failure;
|
|
|
|
if (devlink_reload_stats_put(msg, devlink, false))
|
|
goto dev_stats_nest_cancel;
|
|
if (devlink_reload_stats_put(msg, devlink, true))
|
|
goto dev_stats_nest_cancel;
|
|
|
|
nla_nest_end(msg, dev_stats);
|
|
genlmsg_end(msg, hdr);
|
|
return 0;
|
|
|
|
dev_stats_nest_cancel:
|
|
nla_nest_cancel(msg, dev_stats);
|
|
nla_put_failure:
|
|
genlmsg_cancel(msg, hdr);
|
|
return -EMSGSIZE;
|
|
}
|
|
|
|
static void devlink_notify(struct devlink *devlink, enum devlink_command cmd)
|
|
{
|
|
struct sk_buff *msg;
|
|
int err;
|
|
|
|
WARN_ON(cmd != DEVLINK_CMD_NEW && cmd != DEVLINK_CMD_DEL);
|
|
WARN_ON(!xa_get_mark(&devlinks, devlink->index, DEVLINK_REGISTERED));
|
|
|
|
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
|
|
if (!msg)
|
|
return;
|
|
|
|
err = devlink_nl_fill(msg, devlink, cmd, 0, 0, 0);
|
|
if (err) {
|
|
nlmsg_free(msg);
|
|
return;
|
|
}
|
|
|
|
genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
|
|
msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
|
|
}
|
|
|
|
static int devlink_nl_port_attrs_put(struct sk_buff *msg,
|
|
struct devlink_port *devlink_port)
|
|
{
|
|
struct devlink_port_attrs *attrs = &devlink_port->attrs;
|
|
|
|
if (!devlink_port->attrs_set)
|
|
return 0;
|
|
if (attrs->lanes) {
|
|
if (nla_put_u32(msg, DEVLINK_ATTR_PORT_LANES, attrs->lanes))
|
|
return -EMSGSIZE;
|
|
}
|
|
if (nla_put_u8(msg, DEVLINK_ATTR_PORT_SPLITTABLE, attrs->splittable))
|
|
return -EMSGSIZE;
|
|
if (nla_put_u16(msg, DEVLINK_ATTR_PORT_FLAVOUR, attrs->flavour))
|
|
return -EMSGSIZE;
|
|
switch (devlink_port->attrs.flavour) {
|
|
case DEVLINK_PORT_FLAVOUR_PCI_PF:
|
|
if (nla_put_u32(msg, DEVLINK_ATTR_PORT_CONTROLLER_NUMBER,
|
|
attrs->pci_pf.controller) ||
|
|
nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_PF_NUMBER, attrs->pci_pf.pf))
|
|
return -EMSGSIZE;
|
|
if (nla_put_u8(msg, DEVLINK_ATTR_PORT_EXTERNAL, attrs->pci_pf.external))
|
|
return -EMSGSIZE;
|
|
break;
|
|
case DEVLINK_PORT_FLAVOUR_PCI_VF:
|
|
if (nla_put_u32(msg, DEVLINK_ATTR_PORT_CONTROLLER_NUMBER,
|
|
attrs->pci_vf.controller) ||
|
|
nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_PF_NUMBER, attrs->pci_vf.pf) ||
|
|
nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_VF_NUMBER, attrs->pci_vf.vf))
|
|
return -EMSGSIZE;
|
|
if (nla_put_u8(msg, DEVLINK_ATTR_PORT_EXTERNAL, attrs->pci_vf.external))
|
|
return -EMSGSIZE;
|
|
break;
|
|
case DEVLINK_PORT_FLAVOUR_PCI_SF:
|
|
if (nla_put_u32(msg, DEVLINK_ATTR_PORT_CONTROLLER_NUMBER,
|
|
attrs->pci_sf.controller) ||
|
|
nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_PF_NUMBER,
|
|
attrs->pci_sf.pf) ||
|
|
nla_put_u32(msg, DEVLINK_ATTR_PORT_PCI_SF_NUMBER,
|
|
attrs->pci_sf.sf))
|
|
return -EMSGSIZE;
|
|
break;
|
|
case DEVLINK_PORT_FLAVOUR_PHYSICAL:
|
|
case DEVLINK_PORT_FLAVOUR_CPU:
|
|
case DEVLINK_PORT_FLAVOUR_DSA:
|
|
if (nla_put_u32(msg, DEVLINK_ATTR_PORT_NUMBER,
|
|
attrs->phys.port_number))
|
|
return -EMSGSIZE;
|
|
if (!attrs->split)
|
|
return 0;
|
|
if (nla_put_u32(msg, DEVLINK_ATTR_PORT_SPLIT_GROUP,
|
|
attrs->phys.port_number))
|
|
return -EMSGSIZE;
|
|
if (nla_put_u32(msg, DEVLINK_ATTR_PORT_SPLIT_SUBPORT_NUMBER,
|
|
attrs->phys.split_subport_number))
|
|
return -EMSGSIZE;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int devlink_port_fn_hw_addr_fill(const struct devlink_ops *ops,
|
|
struct devlink_port *port,
|
|
struct sk_buff *msg,
|
|
struct netlink_ext_ack *extack,
|
|
bool *msg_updated)
|
|
{
|
|
u8 hw_addr[MAX_ADDR_LEN];
|
|
int hw_addr_len;
|
|
int err;
|
|
|
|
if (!ops->port_function_hw_addr_get)
|
|
return 0;
|
|
|
|
err = ops->port_function_hw_addr_get(port, hw_addr, &hw_addr_len,
|
|
extack);
|
|
if (err) {
|
|
if (err == -EOPNOTSUPP)
|
|
return 0;
|
|
return err;
|
|
}
|
|
err = nla_put(msg, DEVLINK_PORT_FUNCTION_ATTR_HW_ADDR, hw_addr_len, hw_addr);
|
|
if (err)
|
|
return err;
|
|
*msg_updated = true;
|
|
return 0;
|
|
}
|
|
|
|
static int devlink_nl_rate_fill(struct sk_buff *msg,
|
|
struct devlink_rate *devlink_rate,
|
|
enum devlink_command cmd, u32 portid, u32 seq,
|
|
int flags, struct netlink_ext_ack *extack)
|
|
{
|
|
struct devlink *devlink = devlink_rate->devlink;
|
|
void *hdr;
|
|
|
|
hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
|
|
if (!hdr)
|
|
return -EMSGSIZE;
|
|
|
|
if (devlink_nl_put_handle(msg, devlink))
|
|
goto nla_put_failure;
|
|
|
|
if (nla_put_u16(msg, DEVLINK_ATTR_RATE_TYPE, devlink_rate->type))
|
|
goto nla_put_failure;
|
|
|
|
if (devlink_rate_is_leaf(devlink_rate)) {
|
|
if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX,
|
|
devlink_rate->devlink_port->index))
|
|
goto nla_put_failure;
|
|
} else if (devlink_rate_is_node(devlink_rate)) {
|
|
if (nla_put_string(msg, DEVLINK_ATTR_RATE_NODE_NAME,
|
|
devlink_rate->name))
|
|
goto nla_put_failure;
|
|
}
|
|
|
|
if (nla_put_u64_64bit(msg, DEVLINK_ATTR_RATE_TX_SHARE,
|
|
devlink_rate->tx_share, DEVLINK_ATTR_PAD))
|
|
goto nla_put_failure;
|
|
|
|
if (nla_put_u64_64bit(msg, DEVLINK_ATTR_RATE_TX_MAX,
|
|
devlink_rate->tx_max, DEVLINK_ATTR_PAD))
|
|
goto nla_put_failure;
|
|
|
|
if (devlink_rate->parent)
|
|
if (nla_put_string(msg, DEVLINK_ATTR_RATE_PARENT_NODE_NAME,
|
|
devlink_rate->parent->name))
|
|
goto nla_put_failure;
|
|
|
|
genlmsg_end(msg, hdr);
|
|
return 0;
|
|
|
|
nla_put_failure:
|
|
genlmsg_cancel(msg, hdr);
|
|
return -EMSGSIZE;
|
|
}
|
|
|
|
static bool
|
|
devlink_port_fn_state_valid(enum devlink_port_fn_state state)
|
|
{
|
|
return state == DEVLINK_PORT_FN_STATE_INACTIVE ||
|
|
state == DEVLINK_PORT_FN_STATE_ACTIVE;
|
|
}
|
|
|
|
static bool
|
|
devlink_port_fn_opstate_valid(enum devlink_port_fn_opstate opstate)
|
|
{
|
|
return opstate == DEVLINK_PORT_FN_OPSTATE_DETACHED ||
|
|
opstate == DEVLINK_PORT_FN_OPSTATE_ATTACHED;
|
|
}
|
|
|
|
static int devlink_port_fn_state_fill(const struct devlink_ops *ops,
|
|
struct devlink_port *port,
|
|
struct sk_buff *msg,
|
|
struct netlink_ext_ack *extack,
|
|
bool *msg_updated)
|
|
{
|
|
enum devlink_port_fn_opstate opstate;
|
|
enum devlink_port_fn_state state;
|
|
int err;
|
|
|
|
if (!ops->port_fn_state_get)
|
|
return 0;
|
|
|
|
err = ops->port_fn_state_get(port, &state, &opstate, extack);
|
|
if (err) {
|
|
if (err == -EOPNOTSUPP)
|
|
return 0;
|
|
return err;
|
|
}
|
|
if (!devlink_port_fn_state_valid(state)) {
|
|
WARN_ON_ONCE(1);
|
|
NL_SET_ERR_MSG_MOD(extack, "Invalid state read from driver");
|
|
return -EINVAL;
|
|
}
|
|
if (!devlink_port_fn_opstate_valid(opstate)) {
|
|
WARN_ON_ONCE(1);
|
|
NL_SET_ERR_MSG_MOD(extack,
|
|
"Invalid operational state read from driver");
|
|
return -EINVAL;
|
|
}
|
|
if (nla_put_u8(msg, DEVLINK_PORT_FN_ATTR_STATE, state) ||
|
|
nla_put_u8(msg, DEVLINK_PORT_FN_ATTR_OPSTATE, opstate))
|
|
return -EMSGSIZE;
|
|
*msg_updated = true;
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
devlink_nl_port_function_attrs_put(struct sk_buff *msg, struct devlink_port *port,
|
|
struct netlink_ext_ack *extack)
|
|
{
|
|
const struct devlink_ops *ops;
|
|
struct nlattr *function_attr;
|
|
bool msg_updated = false;
|
|
int err;
|
|
|
|
function_attr = nla_nest_start_noflag(msg, DEVLINK_ATTR_PORT_FUNCTION);
|
|
if (!function_attr)
|
|
return -EMSGSIZE;
|
|
|
|
ops = port->devlink->ops;
|
|
err = devlink_port_fn_hw_addr_fill(ops, port, msg, extack,
|
|
&msg_updated);
|
|
if (err)
|
|
goto out;
|
|
err = devlink_port_fn_state_fill(ops, port, msg, extack, &msg_updated);
|
|
out:
|
|
if (err || !msg_updated)
|
|
nla_nest_cancel(msg, function_attr);
|
|
else
|
|
nla_nest_end(msg, function_attr);
|
|
return err;
|
|
}
|
|
|
|
static int devlink_nl_port_fill(struct sk_buff *msg,
|
|
struct devlink_port *devlink_port,
|
|
enum devlink_command cmd, u32 portid, u32 seq,
|
|
int flags, struct netlink_ext_ack *extack)
|
|
{
|
|
struct devlink *devlink = devlink_port->devlink;
|
|
void *hdr;
|
|
|
|
hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
|
|
if (!hdr)
|
|
return -EMSGSIZE;
|
|
|
|
if (devlink_nl_put_handle(msg, devlink))
|
|
goto nla_put_failure;
|
|
if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, devlink_port->index))
|
|
goto nla_put_failure;
|
|
|
|
/* Hold rtnl lock while accessing port's netdev attributes. */
|
|
rtnl_lock();
|
|
spin_lock_bh(&devlink_port->type_lock);
|
|
if (nla_put_u16(msg, DEVLINK_ATTR_PORT_TYPE, devlink_port->type))
|
|
goto nla_put_failure_type_locked;
|
|
if (devlink_port->desired_type != DEVLINK_PORT_TYPE_NOTSET &&
|
|
nla_put_u16(msg, DEVLINK_ATTR_PORT_DESIRED_TYPE,
|
|
devlink_port->desired_type))
|
|
goto nla_put_failure_type_locked;
|
|
if (devlink_port->type == DEVLINK_PORT_TYPE_ETH) {
|
|
struct net *net = devlink_net(devlink_port->devlink);
|
|
struct net_device *netdev = devlink_port->type_dev;
|
|
|
|
if (netdev && net_eq(net, dev_net(netdev)) &&
|
|
(nla_put_u32(msg, DEVLINK_ATTR_PORT_NETDEV_IFINDEX,
|
|
netdev->ifindex) ||
|
|
nla_put_string(msg, DEVLINK_ATTR_PORT_NETDEV_NAME,
|
|
netdev->name)))
|
|
goto nla_put_failure_type_locked;
|
|
}
|
|
if (devlink_port->type == DEVLINK_PORT_TYPE_IB) {
|
|
struct ib_device *ibdev = devlink_port->type_dev;
|
|
|
|
if (ibdev &&
|
|
nla_put_string(msg, DEVLINK_ATTR_PORT_IBDEV_NAME,
|
|
ibdev->name))
|
|
goto nla_put_failure_type_locked;
|
|
}
|
|
spin_unlock_bh(&devlink_port->type_lock);
|
|
rtnl_unlock();
|
|
if (devlink_nl_port_attrs_put(msg, devlink_port))
|
|
goto nla_put_failure;
|
|
if (devlink_nl_port_function_attrs_put(msg, devlink_port, extack))
|
|
goto nla_put_failure;
|
|
if (devlink_port->linecard &&
|
|
nla_put_u32(msg, DEVLINK_ATTR_LINECARD_INDEX,
|
|
devlink_port->linecard->index))
|
|
goto nla_put_failure;
|
|
|
|
genlmsg_end(msg, hdr);
|
|
return 0;
|
|
|
|
nla_put_failure_type_locked:
|
|
spin_unlock_bh(&devlink_port->type_lock);
|
|
rtnl_unlock();
|
|
nla_put_failure:
|
|
genlmsg_cancel(msg, hdr);
|
|
return -EMSGSIZE;
|
|
}
|
|
|
|
static void devlink_port_notify(struct devlink_port *devlink_port,
|
|
enum devlink_command cmd)
|
|
{
|
|
struct devlink *devlink = devlink_port->devlink;
|
|
struct sk_buff *msg;
|
|
int err;
|
|
|
|
WARN_ON(cmd != DEVLINK_CMD_PORT_NEW && cmd != DEVLINK_CMD_PORT_DEL);
|
|
|
|
if (!xa_get_mark(&devlinks, devlink->index, DEVLINK_REGISTERED))
|
|
return;
|
|
|
|
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
|
|
if (!msg)
|
|
return;
|
|
|
|
err = devlink_nl_port_fill(msg, devlink_port, cmd, 0, 0, 0, NULL);
|
|
if (err) {
|
|
nlmsg_free(msg);
|
|
return;
|
|
}
|
|
|
|
genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink), msg,
|
|
0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
|
|
}
|
|
|
|
static void devlink_rate_notify(struct devlink_rate *devlink_rate,
|
|
enum devlink_command cmd)
|
|
{
|
|
struct devlink *devlink = devlink_rate->devlink;
|
|
struct sk_buff *msg;
|
|
int err;
|
|
|
|
WARN_ON(cmd != DEVLINK_CMD_RATE_NEW && cmd != DEVLINK_CMD_RATE_DEL);
|
|
|
|
if (!xa_get_mark(&devlinks, devlink->index, DEVLINK_REGISTERED))
|
|
return;
|
|
|
|
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
|
|
if (!msg)
|
|
return;
|
|
|
|
err = devlink_nl_rate_fill(msg, devlink_rate, cmd, 0, 0, 0, NULL);
|
|
if (err) {
|
|
nlmsg_free(msg);
|
|
return;
|
|
}
|
|
|
|
genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink), msg,
|
|
0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
|
|
}
|
|
|
|
static int devlink_nl_cmd_rate_get_dumpit(struct sk_buff *msg,
|
|
struct netlink_callback *cb)
|
|
{
|
|
struct devlink_rate *devlink_rate;
|
|
struct devlink *devlink;
|
|
int start = cb->args[0];
|
|
unsigned long index;
|
|
int idx = 0;
|
|
int err = 0;
|
|
|
|
mutex_lock(&devlink_mutex);
|
|
xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) {
|
|
if (!devlink_try_get(devlink))
|
|
continue;
|
|
|
|
if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
|
|
goto retry;
|
|
|
|
mutex_lock(&devlink->lock);
|
|
list_for_each_entry(devlink_rate, &devlink->rate_list, list) {
|
|
enum devlink_command cmd = DEVLINK_CMD_RATE_NEW;
|
|
u32 id = NETLINK_CB(cb->skb).portid;
|
|
|
|
if (idx < start) {
|
|
idx++;
|
|
continue;
|
|
}
|
|
err = devlink_nl_rate_fill(msg, devlink_rate, cmd, id,
|
|
cb->nlh->nlmsg_seq,
|
|
NLM_F_MULTI, NULL);
|
|
if (err) {
|
|
mutex_unlock(&devlink->lock);
|
|
devlink_put(devlink);
|
|
goto out;
|
|
}
|
|
idx++;
|
|
}
|
|
mutex_unlock(&devlink->lock);
|
|
retry:
|
|
devlink_put(devlink);
|
|
}
|
|
out:
|
|
mutex_unlock(&devlink_mutex);
|
|
if (err != -EMSGSIZE)
|
|
return err;
|
|
|
|
cb->args[0] = idx;
|
|
return msg->len;
|
|
}
|
|
|
|
static int devlink_nl_cmd_rate_get_doit(struct sk_buff *skb,
|
|
struct genl_info *info)
|
|
{
|
|
struct devlink_rate *devlink_rate = info->user_ptr[1];
|
|
struct sk_buff *msg;
|
|
int err;
|
|
|
|
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
|
|
if (!msg)
|
|
return -ENOMEM;
|
|
|
|
err = devlink_nl_rate_fill(msg, devlink_rate, DEVLINK_CMD_RATE_NEW,
|
|
info->snd_portid, info->snd_seq, 0,
|
|
info->extack);
|
|
if (err) {
|
|
nlmsg_free(msg);
|
|
return err;
|
|
}
|
|
|
|
return genlmsg_reply(msg, info);
|
|
}
|
|
|
|
static bool
|
|
devlink_rate_is_parent_node(struct devlink_rate *devlink_rate,
|
|
struct devlink_rate *parent)
|
|
{
|
|
while (parent) {
|
|
if (parent == devlink_rate)
|
|
return true;
|
|
parent = parent->parent;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
static int devlink_nl_cmd_get_doit(struct sk_buff *skb, struct genl_info *info)
|
|
{
|
|
struct devlink *devlink = info->user_ptr[0];
|
|
struct sk_buff *msg;
|
|
int err;
|
|
|
|
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
|
|
if (!msg)
|
|
return -ENOMEM;
|
|
|
|
err = devlink_nl_fill(msg, devlink, DEVLINK_CMD_NEW,
|
|
info->snd_portid, info->snd_seq, 0);
|
|
if (err) {
|
|
nlmsg_free(msg);
|
|
return err;
|
|
}
|
|
|
|
return genlmsg_reply(msg, info);
|
|
}
|
|
|
|
static int devlink_nl_cmd_get_dumpit(struct sk_buff *msg,
|
|
struct netlink_callback *cb)
|
|
{
|
|
struct devlink *devlink;
|
|
int start = cb->args[0];
|
|
unsigned long index;
|
|
int idx = 0;
|
|
int err;
|
|
|
|
mutex_lock(&devlink_mutex);
|
|
xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) {
|
|
if (!devlink_try_get(devlink))
|
|
continue;
|
|
|
|
if (!net_eq(devlink_net(devlink), sock_net(msg->sk))) {
|
|
devlink_put(devlink);
|
|
continue;
|
|
}
|
|
|
|
if (idx < start) {
|
|
idx++;
|
|
devlink_put(devlink);
|
|
continue;
|
|
}
|
|
|
|
err = devlink_nl_fill(msg, devlink, DEVLINK_CMD_NEW,
|
|
NETLINK_CB(cb->skb).portid,
|
|
cb->nlh->nlmsg_seq, NLM_F_MULTI);
|
|
devlink_put(devlink);
|
|
if (err)
|
|
goto out;
|
|
idx++;
|
|
}
|
|
out:
|
|
mutex_unlock(&devlink_mutex);
|
|
|
|
cb->args[0] = idx;
|
|
return msg->len;
|
|
}
|
|
|
|
static int devlink_nl_cmd_port_get_doit(struct sk_buff *skb,
|
|
struct genl_info *info)
|
|
{
|
|
struct devlink_port *devlink_port = info->user_ptr[1];
|
|
struct sk_buff *msg;
|
|
int err;
|
|
|
|
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
|
|
if (!msg)
|
|
return -ENOMEM;
|
|
|
|
err = devlink_nl_port_fill(msg, devlink_port, DEVLINK_CMD_PORT_NEW,
|
|
info->snd_portid, info->snd_seq, 0,
|
|
info->extack);
|
|
if (err) {
|
|
nlmsg_free(msg);
|
|
return err;
|
|
}
|
|
|
|
return genlmsg_reply(msg, info);
|
|
}
|
|
|
|
static int devlink_nl_cmd_port_get_dumpit(struct sk_buff *msg,
|
|
struct netlink_callback *cb)
|
|
{
|
|
struct devlink *devlink;
|
|
struct devlink_port *devlink_port;
|
|
int start = cb->args[0];
|
|
unsigned long index;
|
|
int idx = 0;
|
|
int err;
|
|
|
|
mutex_lock(&devlink_mutex);
|
|
xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) {
|
|
if (!devlink_try_get(devlink))
|
|
continue;
|
|
|
|
if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
|
|
goto retry;
|
|
|
|
mutex_lock(&devlink->lock);
|
|
list_for_each_entry(devlink_port, &devlink->port_list, list) {
|
|
if (idx < start) {
|
|
idx++;
|
|
continue;
|
|
}
|
|
err = devlink_nl_port_fill(msg, devlink_port,
|
|
DEVLINK_CMD_NEW,
|
|
NETLINK_CB(cb->skb).portid,
|
|
cb->nlh->nlmsg_seq,
|
|
NLM_F_MULTI, cb->extack);
|
|
if (err) {
|
|
mutex_unlock(&devlink->lock);
|
|
devlink_put(devlink);
|
|
goto out;
|
|
}
|
|
idx++;
|
|
}
|
|
mutex_unlock(&devlink->lock);
|
|
retry:
|
|
devlink_put(devlink);
|
|
}
|
|
out:
|
|
mutex_unlock(&devlink_mutex);
|
|
|
|
cb->args[0] = idx;
|
|
return msg->len;
|
|
}
|
|
|
|
static int devlink_port_type_set(struct devlink_port *devlink_port,
|
|
enum devlink_port_type port_type)
|
|
|
|
{
|
|
int err;
|
|
|
|
if (!devlink_port->devlink->ops->port_type_set)
|
|
return -EOPNOTSUPP;
|
|
|
|
if (port_type == devlink_port->type)
|
|
return 0;
|
|
|
|
err = devlink_port->devlink->ops->port_type_set(devlink_port,
|
|
port_type);
|
|
if (err)
|
|
return err;
|
|
|
|
devlink_port->desired_type = port_type;
|
|
devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
|
|
return 0;
|
|
}
|
|
|
|
static int devlink_port_function_hw_addr_set(struct devlink_port *port,
|
|
const struct nlattr *attr,
|
|
struct netlink_ext_ack *extack)
|
|
{
|
|
const struct devlink_ops *ops = port->devlink->ops;
|
|
const u8 *hw_addr;
|
|
int hw_addr_len;
|
|
|
|
hw_addr = nla_data(attr);
|
|
hw_addr_len = nla_len(attr);
|
|
if (hw_addr_len > MAX_ADDR_LEN) {
|
|
NL_SET_ERR_MSG_MOD(extack, "Port function hardware address too long");
|
|
return -EINVAL;
|
|
}
|
|
if (port->type == DEVLINK_PORT_TYPE_ETH) {
|
|
if (hw_addr_len != ETH_ALEN) {
|
|
NL_SET_ERR_MSG_MOD(extack, "Address must be 6 bytes for Ethernet device");
|
|
return -EINVAL;
|
|
}
|
|
if (!is_unicast_ether_addr(hw_addr)) {
|
|
NL_SET_ERR_MSG_MOD(extack, "Non-unicast hardware address unsupported");
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
|
|
if (!ops->port_function_hw_addr_set) {
|
|
NL_SET_ERR_MSG_MOD(extack, "Port doesn't support function attributes");
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
return ops->port_function_hw_addr_set(port, hw_addr, hw_addr_len,
|
|
extack);
|
|
}
|
|
|
|
static int devlink_port_fn_state_set(struct devlink_port *port,
|
|
const struct nlattr *attr,
|
|
struct netlink_ext_ack *extack)
|
|
{
|
|
enum devlink_port_fn_state state;
|
|
const struct devlink_ops *ops;
|
|
|
|
state = nla_get_u8(attr);
|
|
ops = port->devlink->ops;
|
|
if (!ops->port_fn_state_set) {
|
|
NL_SET_ERR_MSG_MOD(extack,
|
|
"Function does not support state setting");
|
|
return -EOPNOTSUPP;
|
|
}
|
|
return ops->port_fn_state_set(port, state, extack);
|
|
}
|
|
|
|
static int devlink_port_function_set(struct devlink_port *port,
|
|
const struct nlattr *attr,
|
|
struct netlink_ext_ack *extack)
|
|
{
|
|
struct nlattr *tb[DEVLINK_PORT_FUNCTION_ATTR_MAX + 1];
|
|
int err;
|
|
|
|
err = nla_parse_nested(tb, DEVLINK_PORT_FUNCTION_ATTR_MAX, attr,
|
|
devlink_function_nl_policy, extack);
|
|
if (err < 0) {
|
|
NL_SET_ERR_MSG_MOD(extack, "Fail to parse port function attributes");
|
|
return err;
|
|
}
|
|
|
|
attr = tb[DEVLINK_PORT_FUNCTION_ATTR_HW_ADDR];
|
|
if (attr) {
|
|
err = devlink_port_function_hw_addr_set(port, attr, extack);
|
|
if (err)
|
|
return err;
|
|
}
|
|
/* Keep this as the last function attribute set, so that when
|
|
* multiple port function attributes are set along with state,
|
|
* Those can be applied first before activating the state.
|
|
*/
|
|
attr = tb[DEVLINK_PORT_FN_ATTR_STATE];
|
|
if (attr)
|
|
err = devlink_port_fn_state_set(port, attr, extack);
|
|
|
|
if (!err)
|
|
devlink_port_notify(port, DEVLINK_CMD_PORT_NEW);
|
|
return err;
|
|
}
|
|
|
|
static int devlink_nl_cmd_port_set_doit(struct sk_buff *skb,
|
|
struct genl_info *info)
|
|
{
|
|
struct devlink_port *devlink_port = info->user_ptr[1];
|
|
int err;
|
|
|
|
if (info->attrs[DEVLINK_ATTR_PORT_TYPE]) {
|
|
enum devlink_port_type port_type;
|
|
|
|
port_type = nla_get_u16(info->attrs[DEVLINK_ATTR_PORT_TYPE]);
|
|
err = devlink_port_type_set(devlink_port, port_type);
|
|
if (err)
|
|
return err;
|
|
}
|
|
|
|
if (info->attrs[DEVLINK_ATTR_PORT_FUNCTION]) {
|
|
struct nlattr *attr = info->attrs[DEVLINK_ATTR_PORT_FUNCTION];
|
|
struct netlink_ext_ack *extack = info->extack;
|
|
|
|
err = devlink_port_function_set(devlink_port, attr, extack);
|
|
if (err)
|
|
return err;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int devlink_nl_cmd_port_split_doit(struct sk_buff *skb,
|
|
struct genl_info *info)
|
|
{
|
|
struct devlink_port *devlink_port = info->user_ptr[1];
|
|
struct devlink *devlink = info->user_ptr[0];
|
|
u32 count;
|
|
|
|
if (!info->attrs[DEVLINK_ATTR_PORT_SPLIT_COUNT])
|
|
return -EINVAL;
|
|
if (!devlink->ops->port_split)
|
|
return -EOPNOTSUPP;
|
|
|
|
count = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_SPLIT_COUNT]);
|
|
|
|
if (!devlink_port->attrs.splittable) {
|
|
/* Split ports cannot be split. */
|
|
if (devlink_port->attrs.split)
|
|
NL_SET_ERR_MSG_MOD(info->extack, "Port cannot be split further");
|
|
else
|
|
NL_SET_ERR_MSG_MOD(info->extack, "Port cannot be split");
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (count < 2 || !is_power_of_2(count) || count > devlink_port->attrs.lanes) {
|
|
NL_SET_ERR_MSG_MOD(info->extack, "Invalid split count");
|
|
return -EINVAL;
|
|
}
|
|
|
|
return devlink->ops->port_split(devlink, devlink_port, count,
|
|
info->extack);
|
|
}
|
|
|
|
static int devlink_nl_cmd_port_unsplit_doit(struct sk_buff *skb,
|
|
struct genl_info *info)
|
|
{
|
|
struct devlink_port *devlink_port = info->user_ptr[1];
|
|
struct devlink *devlink = info->user_ptr[0];
|
|
|
|
if (!devlink->ops->port_unsplit)
|
|
return -EOPNOTSUPP;
|
|
return devlink->ops->port_unsplit(devlink, devlink_port, info->extack);
|
|
}
|
|
|
|
static int devlink_port_new_notifiy(struct devlink *devlink,
|
|
unsigned int port_index,
|
|
struct genl_info *info)
|
|
{
|
|
struct devlink_port *devlink_port;
|
|
struct sk_buff *msg;
|
|
int err;
|
|
|
|
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
|
|
if (!msg)
|
|
return -ENOMEM;
|
|
|
|
mutex_lock(&devlink->lock);
|
|
devlink_port = devlink_port_get_by_index(devlink, port_index);
|
|
if (!devlink_port) {
|
|
err = -ENODEV;
|
|
goto out;
|
|
}
|
|
|
|
err = devlink_nl_port_fill(msg, devlink_port, DEVLINK_CMD_NEW,
|
|
info->snd_portid, info->snd_seq, 0, NULL);
|
|
if (err)
|
|
goto out;
|
|
|
|
err = genlmsg_reply(msg, info);
|
|
mutex_unlock(&devlink->lock);
|
|
return err;
|
|
|
|
out:
|
|
mutex_unlock(&devlink->lock);
|
|
nlmsg_free(msg);
|
|
return err;
|
|
}
|
|
|
|
static int devlink_nl_cmd_port_new_doit(struct sk_buff *skb,
|
|
struct genl_info *info)
|
|
{
|
|
struct netlink_ext_ack *extack = info->extack;
|
|
struct devlink_port_new_attrs new_attrs = {};
|
|
struct devlink *devlink = info->user_ptr[0];
|
|
unsigned int new_port_index;
|
|
int err;
|
|
|
|
if (!devlink->ops->port_new || !devlink->ops->port_del)
|
|
return -EOPNOTSUPP;
|
|
|
|
if (!info->attrs[DEVLINK_ATTR_PORT_FLAVOUR] ||
|
|
!info->attrs[DEVLINK_ATTR_PORT_PCI_PF_NUMBER]) {
|
|
NL_SET_ERR_MSG_MOD(extack, "Port flavour or PCI PF are not specified");
|
|
return -EINVAL;
|
|
}
|
|
new_attrs.flavour = nla_get_u16(info->attrs[DEVLINK_ATTR_PORT_FLAVOUR]);
|
|
new_attrs.pfnum =
|
|
nla_get_u16(info->attrs[DEVLINK_ATTR_PORT_PCI_PF_NUMBER]);
|
|
|
|
if (info->attrs[DEVLINK_ATTR_PORT_INDEX]) {
|
|
/* Port index of the new port being created by driver. */
|
|
new_attrs.port_index =
|
|
nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
|
|
new_attrs.port_index_valid = true;
|
|
}
|
|
if (info->attrs[DEVLINK_ATTR_PORT_CONTROLLER_NUMBER]) {
|
|
new_attrs.controller =
|
|
nla_get_u16(info->attrs[DEVLINK_ATTR_PORT_CONTROLLER_NUMBER]);
|
|
new_attrs.controller_valid = true;
|
|
}
|
|
if (new_attrs.flavour == DEVLINK_PORT_FLAVOUR_PCI_SF &&
|
|
info->attrs[DEVLINK_ATTR_PORT_PCI_SF_NUMBER]) {
|
|
new_attrs.sfnum = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_PCI_SF_NUMBER]);
|
|
new_attrs.sfnum_valid = true;
|
|
}
|
|
|
|
err = devlink->ops->port_new(devlink, &new_attrs, extack,
|
|
&new_port_index);
|
|
if (err)
|
|
return err;
|
|
|
|
err = devlink_port_new_notifiy(devlink, new_port_index, info);
|
|
if (err && err != -ENODEV) {
|
|
/* Fail to send the response; destroy newly created port. */
|
|
devlink->ops->port_del(devlink, new_port_index, extack);
|
|
}
|
|
return err;
|
|
}
|
|
|
|
static int devlink_nl_cmd_port_del_doit(struct sk_buff *skb,
|
|
struct genl_info *info)
|
|
{
|
|
struct netlink_ext_ack *extack = info->extack;
|
|
struct devlink *devlink = info->user_ptr[0];
|
|
unsigned int port_index;
|
|
|
|
if (!devlink->ops->port_del)
|
|
return -EOPNOTSUPP;
|
|
|
|
if (!info->attrs[DEVLINK_ATTR_PORT_INDEX]) {
|
|
NL_SET_ERR_MSG_MOD(extack, "Port index is not specified");
|
|
return -EINVAL;
|
|
}
|
|
port_index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
|
|
|
|
return devlink->ops->port_del(devlink, port_index, extack);
|
|
}
|
|
|
|
static int
|
|
devlink_nl_rate_parent_node_set(struct devlink_rate *devlink_rate,
|
|
struct genl_info *info,
|
|
struct nlattr *nla_parent)
|
|
{
|
|
struct devlink *devlink = devlink_rate->devlink;
|
|
const char *parent_name = nla_data(nla_parent);
|
|
const struct devlink_ops *ops = devlink->ops;
|
|
size_t len = strlen(parent_name);
|
|
struct devlink_rate *parent;
|
|
int err = -EOPNOTSUPP;
|
|
|
|
parent = devlink_rate->parent;
|
|
if (parent && len) {
|
|
NL_SET_ERR_MSG_MOD(info->extack, "Rate object already has parent.");
|
|
return -EBUSY;
|
|
} else if (parent && !len) {
|
|
if (devlink_rate_is_leaf(devlink_rate))
|
|
err = ops->rate_leaf_parent_set(devlink_rate, NULL,
|
|
devlink_rate->priv, NULL,
|
|
info->extack);
|
|
else if (devlink_rate_is_node(devlink_rate))
|
|
err = ops->rate_node_parent_set(devlink_rate, NULL,
|
|
devlink_rate->priv, NULL,
|
|
info->extack);
|
|
if (err)
|
|
return err;
|
|
|
|
refcount_dec(&parent->refcnt);
|
|
devlink_rate->parent = NULL;
|
|
} else if (!parent && len) {
|
|
parent = devlink_rate_node_get_by_name(devlink, parent_name);
|
|
if (IS_ERR(parent))
|
|
return -ENODEV;
|
|
|
|
if (parent == devlink_rate) {
|
|
NL_SET_ERR_MSG_MOD(info->extack, "Parent to self is not allowed");
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (devlink_rate_is_node(devlink_rate) &&
|
|
devlink_rate_is_parent_node(devlink_rate, parent->parent)) {
|
|
NL_SET_ERR_MSG_MOD(info->extack, "Node is already a parent of parent node.");
|
|
return -EEXIST;
|
|
}
|
|
|
|
if (devlink_rate_is_leaf(devlink_rate))
|
|
err = ops->rate_leaf_parent_set(devlink_rate, parent,
|
|
devlink_rate->priv, parent->priv,
|
|
info->extack);
|
|
else if (devlink_rate_is_node(devlink_rate))
|
|
err = ops->rate_node_parent_set(devlink_rate, parent,
|
|
devlink_rate->priv, parent->priv,
|
|
info->extack);
|
|
if (err)
|
|
return err;
|
|
|
|
refcount_inc(&parent->refcnt);
|
|
devlink_rate->parent = parent;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int devlink_nl_rate_set(struct devlink_rate *devlink_rate,
|
|
const struct devlink_ops *ops,
|
|
struct genl_info *info)
|
|
{
|
|
struct nlattr *nla_parent, **attrs = info->attrs;
|
|
int err = -EOPNOTSUPP;
|
|
u64 rate;
|
|
|
|
if (attrs[DEVLINK_ATTR_RATE_TX_SHARE]) {
|
|
rate = nla_get_u64(attrs[DEVLINK_ATTR_RATE_TX_SHARE]);
|
|
if (devlink_rate_is_leaf(devlink_rate))
|
|
err = ops->rate_leaf_tx_share_set(devlink_rate, devlink_rate->priv,
|
|
rate, info->extack);
|
|
else if (devlink_rate_is_node(devlink_rate))
|
|
err = ops->rate_node_tx_share_set(devlink_rate, devlink_rate->priv,
|
|
rate, info->extack);
|
|
if (err)
|
|
return err;
|
|
devlink_rate->tx_share = rate;
|
|
}
|
|
|
|
if (attrs[DEVLINK_ATTR_RATE_TX_MAX]) {
|
|
rate = nla_get_u64(attrs[DEVLINK_ATTR_RATE_TX_MAX]);
|
|
if (devlink_rate_is_leaf(devlink_rate))
|
|
err = ops->rate_leaf_tx_max_set(devlink_rate, devlink_rate->priv,
|
|
rate, info->extack);
|
|
else if (devlink_rate_is_node(devlink_rate))
|
|
err = ops->rate_node_tx_max_set(devlink_rate, devlink_rate->priv,
|
|
rate, info->extack);
|
|
if (err)
|
|
return err;
|
|
devlink_rate->tx_max = rate;
|
|
}
|
|
|
|
nla_parent = attrs[DEVLINK_ATTR_RATE_PARENT_NODE_NAME];
|
|
if (nla_parent) {
|
|
err = devlink_nl_rate_parent_node_set(devlink_rate, info,
|
|
nla_parent);
|
|
if (err)
|
|
return err;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static bool devlink_rate_set_ops_supported(const struct devlink_ops *ops,
|
|
struct genl_info *info,
|
|
enum devlink_rate_type type)
|
|
{
|
|
struct nlattr **attrs = info->attrs;
|
|
|
|
if (type == DEVLINK_RATE_TYPE_LEAF) {
|
|
if (attrs[DEVLINK_ATTR_RATE_TX_SHARE] && !ops->rate_leaf_tx_share_set) {
|
|
NL_SET_ERR_MSG_MOD(info->extack, "TX share set isn't supported for the leafs");
|
|
return false;
|
|
}
|
|
if (attrs[DEVLINK_ATTR_RATE_TX_MAX] && !ops->rate_leaf_tx_max_set) {
|
|
NL_SET_ERR_MSG_MOD(info->extack, "TX max set isn't supported for the leafs");
|
|
return false;
|
|
}
|
|
if (attrs[DEVLINK_ATTR_RATE_PARENT_NODE_NAME] &&
|
|
!ops->rate_leaf_parent_set) {
|
|
NL_SET_ERR_MSG_MOD(info->extack, "Parent set isn't supported for the leafs");
|
|
return false;
|
|
}
|
|
} else if (type == DEVLINK_RATE_TYPE_NODE) {
|
|
if (attrs[DEVLINK_ATTR_RATE_TX_SHARE] && !ops->rate_node_tx_share_set) {
|
|
NL_SET_ERR_MSG_MOD(info->extack, "TX share set isn't supported for the nodes");
|
|
return false;
|
|
}
|
|
if (attrs[DEVLINK_ATTR_RATE_TX_MAX] && !ops->rate_node_tx_max_set) {
|
|
NL_SET_ERR_MSG_MOD(info->extack, "TX max set isn't supported for the nodes");
|
|
return false;
|
|
}
|
|
if (attrs[DEVLINK_ATTR_RATE_PARENT_NODE_NAME] &&
|
|
!ops->rate_node_parent_set) {
|
|
NL_SET_ERR_MSG_MOD(info->extack, "Parent set isn't supported for the nodes");
|
|
return false;
|
|
}
|
|
} else {
|
|
WARN(1, "Unknown type of rate object");
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
static int devlink_nl_cmd_rate_set_doit(struct sk_buff *skb,
|
|
struct genl_info *info)
|
|
{
|
|
struct devlink_rate *devlink_rate = info->user_ptr[1];
|
|
struct devlink *devlink = devlink_rate->devlink;
|
|
const struct devlink_ops *ops = devlink->ops;
|
|
int err;
|
|
|
|
if (!ops || !devlink_rate_set_ops_supported(ops, info, devlink_rate->type))
|
|
return -EOPNOTSUPP;
|
|
|
|
err = devlink_nl_rate_set(devlink_rate, ops, info);
|
|
|
|
if (!err)
|
|
devlink_rate_notify(devlink_rate, DEVLINK_CMD_RATE_NEW);
|
|
return err;
|
|
}
|
|
|
|
static int devlink_nl_cmd_rate_new_doit(struct sk_buff *skb,
|
|
struct genl_info *info)
|
|
{
|
|
struct devlink *devlink = info->user_ptr[0];
|
|
struct devlink_rate *rate_node;
|
|
const struct devlink_ops *ops;
|
|
int err;
|
|
|
|
ops = devlink->ops;
|
|
if (!ops || !ops->rate_node_new || !ops->rate_node_del) {
|
|
NL_SET_ERR_MSG_MOD(info->extack, "Rate nodes aren't supported");
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
if (!devlink_rate_set_ops_supported(ops, info, DEVLINK_RATE_TYPE_NODE))
|
|
return -EOPNOTSUPP;
|
|
|
|
rate_node = devlink_rate_node_get_from_attrs(devlink, info->attrs);
|
|
if (!IS_ERR(rate_node))
|
|
return -EEXIST;
|
|
else if (rate_node == ERR_PTR(-EINVAL))
|
|
return -EINVAL;
|
|
|
|
rate_node = kzalloc(sizeof(*rate_node), GFP_KERNEL);
|
|
if (!rate_node)
|
|
return -ENOMEM;
|
|
|
|
rate_node->devlink = devlink;
|
|
rate_node->type = DEVLINK_RATE_TYPE_NODE;
|
|
rate_node->name = nla_strdup(info->attrs[DEVLINK_ATTR_RATE_NODE_NAME], GFP_KERNEL);
|
|
if (!rate_node->name) {
|
|
err = -ENOMEM;
|
|
goto err_strdup;
|
|
}
|
|
|
|
err = ops->rate_node_new(rate_node, &rate_node->priv, info->extack);
|
|
if (err)
|
|
goto err_node_new;
|
|
|
|
err = devlink_nl_rate_set(rate_node, ops, info);
|
|
if (err)
|
|
goto err_rate_set;
|
|
|
|
refcount_set(&rate_node->refcnt, 1);
|
|
list_add(&rate_node->list, &devlink->rate_list);
|
|
devlink_rate_notify(rate_node, DEVLINK_CMD_RATE_NEW);
|
|
return 0;
|
|
|
|
err_rate_set:
|
|
ops->rate_node_del(rate_node, rate_node->priv, info->extack);
|
|
err_node_new:
|
|
kfree(rate_node->name);
|
|
err_strdup:
|
|
kfree(rate_node);
|
|
return err;
|
|
}
|
|
|
|
static int devlink_nl_cmd_rate_del_doit(struct sk_buff *skb,
|
|
struct genl_info *info)
|
|
{
|
|
struct devlink_rate *rate_node = info->user_ptr[1];
|
|
struct devlink *devlink = rate_node->devlink;
|
|
const struct devlink_ops *ops = devlink->ops;
|
|
int err;
|
|
|
|
if (refcount_read(&rate_node->refcnt) > 1) {
|
|
NL_SET_ERR_MSG_MOD(info->extack, "Node has children. Cannot delete node.");
|
|
return -EBUSY;
|
|
}
|
|
|
|
devlink_rate_notify(rate_node, DEVLINK_CMD_RATE_DEL);
|
|
err = ops->rate_node_del(rate_node, rate_node->priv, info->extack);
|
|
if (rate_node->parent)
|
|
refcount_dec(&rate_node->parent->refcnt);
|
|
list_del(&rate_node->list);
|
|
kfree(rate_node->name);
|
|
kfree(rate_node);
|
|
return err;
|
|
}
|
|
|
|
struct devlink_linecard_type {
|
|
const char *type;
|
|
const void *priv;
|
|
};
|
|
|
|
static int devlink_nl_linecard_fill(struct sk_buff *msg,
|
|
struct devlink *devlink,
|
|
struct devlink_linecard *linecard,
|
|
enum devlink_command cmd, u32 portid,
|
|
u32 seq, int flags,
|
|
struct netlink_ext_ack *extack)
|
|
{
|
|
struct devlink_linecard_type *linecard_type;
|
|
struct nlattr *attr;
|
|
void *hdr;
|
|
int i;
|
|
|
|
hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
|
|
if (!hdr)
|
|
return -EMSGSIZE;
|
|
|
|
if (devlink_nl_put_handle(msg, devlink))
|
|
goto nla_put_failure;
|
|
if (nla_put_u32(msg, DEVLINK_ATTR_LINECARD_INDEX, linecard->index))
|
|
goto nla_put_failure;
|
|
if (nla_put_u8(msg, DEVLINK_ATTR_LINECARD_STATE, linecard->state))
|
|
goto nla_put_failure;
|
|
if (linecard->type &&
|
|
nla_put_string(msg, DEVLINK_ATTR_LINECARD_TYPE, linecard->type))
|
|
goto nla_put_failure;
|
|
|
|
if (linecard->types_count) {
|
|
attr = nla_nest_start(msg,
|
|
DEVLINK_ATTR_LINECARD_SUPPORTED_TYPES);
|
|
if (!attr)
|
|
goto nla_put_failure;
|
|
for (i = 0; i < linecard->types_count; i++) {
|
|
linecard_type = &linecard->types[i];
|
|
if (nla_put_string(msg, DEVLINK_ATTR_LINECARD_TYPE,
|
|
linecard_type->type)) {
|
|
nla_nest_cancel(msg, attr);
|
|
goto nla_put_failure;
|
|
}
|
|
}
|
|
nla_nest_end(msg, attr);
|
|
}
|
|
|
|
genlmsg_end(msg, hdr);
|
|
return 0;
|
|
|
|
nla_put_failure:
|
|
genlmsg_cancel(msg, hdr);
|
|
return -EMSGSIZE;
|
|
}
|
|
|
|
static void devlink_linecard_notify(struct devlink_linecard *linecard,
|
|
enum devlink_command cmd)
|
|
{
|
|
struct devlink *devlink = linecard->devlink;
|
|
struct sk_buff *msg;
|
|
int err;
|
|
|
|
WARN_ON(cmd != DEVLINK_CMD_LINECARD_NEW &&
|
|
cmd != DEVLINK_CMD_LINECARD_DEL);
|
|
|
|
if (!xa_get_mark(&devlinks, devlink->index, DEVLINK_REGISTERED))
|
|
return;
|
|
|
|
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
|
|
if (!msg)
|
|
return;
|
|
|
|
err = devlink_nl_linecard_fill(msg, devlink, linecard, cmd, 0, 0, 0,
|
|
NULL);
|
|
if (err) {
|
|
nlmsg_free(msg);
|
|
return;
|
|
}
|
|
|
|
genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
|
|
msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
|
|
}
|
|
|
|
static int devlink_nl_cmd_linecard_get_doit(struct sk_buff *skb,
|
|
struct genl_info *info)
|
|
{
|
|
struct devlink_linecard *linecard = info->user_ptr[1];
|
|
struct devlink *devlink = linecard->devlink;
|
|
struct sk_buff *msg;
|
|
int err;
|
|
|
|
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
|
|
if (!msg)
|
|
return -ENOMEM;
|
|
|
|
mutex_lock(&linecard->state_lock);
|
|
err = devlink_nl_linecard_fill(msg, devlink, linecard,
|
|
DEVLINK_CMD_LINECARD_NEW,
|
|
info->snd_portid, info->snd_seq, 0,
|
|
info->extack);
|
|
mutex_unlock(&linecard->state_lock);
|
|
if (err) {
|
|
nlmsg_free(msg);
|
|
return err;
|
|
}
|
|
|
|
return genlmsg_reply(msg, info);
|
|
}
|
|
|
|
static int devlink_nl_cmd_linecard_get_dumpit(struct sk_buff *msg,
|
|
struct netlink_callback *cb)
|
|
{
|
|
struct devlink_linecard *linecard;
|
|
struct devlink *devlink;
|
|
int start = cb->args[0];
|
|
unsigned long index;
|
|
int idx = 0;
|
|
int err;
|
|
|
|
mutex_lock(&devlink_mutex);
|
|
xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) {
|
|
if (!devlink_try_get(devlink))
|
|
continue;
|
|
|
|
if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
|
|
goto retry;
|
|
|
|
mutex_lock(&devlink->linecards_lock);
|
|
list_for_each_entry(linecard, &devlink->linecard_list, list) {
|
|
if (idx < start) {
|
|
idx++;
|
|
continue;
|
|
}
|
|
mutex_lock(&linecard->state_lock);
|
|
err = devlink_nl_linecard_fill(msg, devlink, linecard,
|
|
DEVLINK_CMD_LINECARD_NEW,
|
|
NETLINK_CB(cb->skb).portid,
|
|
cb->nlh->nlmsg_seq,
|
|
NLM_F_MULTI,
|
|
cb->extack);
|
|
mutex_unlock(&linecard->state_lock);
|
|
if (err) {
|
|
mutex_unlock(&devlink->linecards_lock);
|
|
devlink_put(devlink);
|
|
goto out;
|
|
}
|
|
idx++;
|
|
}
|
|
mutex_unlock(&devlink->linecards_lock);
|
|
retry:
|
|
devlink_put(devlink);
|
|
}
|
|
out:
|
|
mutex_unlock(&devlink_mutex);
|
|
|
|
cb->args[0] = idx;
|
|
return msg->len;
|
|
}
|
|
|
|
static struct devlink_linecard_type *
|
|
devlink_linecard_type_lookup(struct devlink_linecard *linecard,
|
|
const char *type)
|
|
{
|
|
struct devlink_linecard_type *linecard_type;
|
|
int i;
|
|
|
|
for (i = 0; i < linecard->types_count; i++) {
|
|
linecard_type = &linecard->types[i];
|
|
if (!strcmp(type, linecard_type->type))
|
|
return linecard_type;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
static int devlink_linecard_type_set(struct devlink_linecard *linecard,
|
|
const char *type,
|
|
struct netlink_ext_ack *extack)
|
|
{
|
|
const struct devlink_linecard_ops *ops = linecard->ops;
|
|
struct devlink_linecard_type *linecard_type;
|
|
int err;
|
|
|
|
mutex_lock(&linecard->state_lock);
|
|
if (linecard->state == DEVLINK_LINECARD_STATE_PROVISIONING) {
|
|
NL_SET_ERR_MSG_MOD(extack, "Line card is currently being provisioned");
|
|
err = -EBUSY;
|
|
goto out;
|
|
}
|
|
if (linecard->state == DEVLINK_LINECARD_STATE_UNPROVISIONING) {
|
|
NL_SET_ERR_MSG_MOD(extack, "Line card is currently being unprovisioned");
|
|
err = -EBUSY;
|
|
goto out;
|
|
}
|
|
|
|
linecard_type = devlink_linecard_type_lookup(linecard, type);
|
|
if (!linecard_type) {
|
|
NL_SET_ERR_MSG_MOD(extack, "Unsupported line card type provided");
|
|
err = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
if (linecard->state != DEVLINK_LINECARD_STATE_UNPROVISIONED &&
|
|
linecard->state != DEVLINK_LINECARD_STATE_PROVISIONING_FAILED) {
|
|
NL_SET_ERR_MSG_MOD(extack, "Line card already provisioned");
|
|
err = -EBUSY;
|
|
/* Check if the line card is provisioned in the same
|
|
* way the user asks. In case it is, make the operation
|
|
* to return success.
|
|
*/
|
|
if (ops->same_provision &&
|
|
ops->same_provision(linecard, linecard->priv,
|
|
linecard_type->type,
|
|
linecard_type->priv))
|
|
err = 0;
|
|
goto out;
|
|
}
|
|
|
|
linecard->state = DEVLINK_LINECARD_STATE_PROVISIONING;
|
|
linecard->type = linecard_type->type;
|
|
devlink_linecard_notify(linecard, DEVLINK_CMD_LINECARD_NEW);
|
|
mutex_unlock(&linecard->state_lock);
|
|
err = ops->provision(linecard, linecard->priv, linecard_type->type,
|
|
linecard_type->priv, extack);
|
|
if (err) {
|
|
/* Provisioning failed. Assume the linecard is unprovisioned
|
|
* for future operations.
|
|
*/
|
|
mutex_lock(&linecard->state_lock);
|
|
linecard->state = DEVLINK_LINECARD_STATE_UNPROVISIONED;
|
|
linecard->type = NULL;
|
|
devlink_linecard_notify(linecard, DEVLINK_CMD_LINECARD_NEW);
|
|
mutex_unlock(&linecard->state_lock);
|
|
}
|
|
return err;
|
|
|
|
out:
|
|
mutex_unlock(&linecard->state_lock);
|
|
return err;
|
|
}
|
|
|
|
static int devlink_linecard_type_unset(struct devlink_linecard *linecard,
|
|
struct netlink_ext_ack *extack)
|
|
{
|
|
int err;
|
|
|
|
mutex_lock(&linecard->state_lock);
|
|
if (linecard->state == DEVLINK_LINECARD_STATE_PROVISIONING) {
|
|
NL_SET_ERR_MSG_MOD(extack, "Line card is currently being provisioned");
|
|
err = -EBUSY;
|
|
goto out;
|
|
}
|
|
if (linecard->state == DEVLINK_LINECARD_STATE_UNPROVISIONING) {
|
|
NL_SET_ERR_MSG_MOD(extack, "Line card is currently being unprovisioned");
|
|
err = -EBUSY;
|
|
goto out;
|
|
}
|
|
if (linecard->state == DEVLINK_LINECARD_STATE_PROVISIONING_FAILED) {
|
|
linecard->state = DEVLINK_LINECARD_STATE_UNPROVISIONED;
|
|
linecard->type = NULL;
|
|
devlink_linecard_notify(linecard, DEVLINK_CMD_LINECARD_NEW);
|
|
err = 0;
|
|
goto out;
|
|
}
|
|
|
|
if (linecard->state == DEVLINK_LINECARD_STATE_UNPROVISIONED) {
|
|
NL_SET_ERR_MSG_MOD(extack, "Line card is not provisioned");
|
|
err = 0;
|
|
goto out;
|
|
}
|
|
linecard->state = DEVLINK_LINECARD_STATE_UNPROVISIONING;
|
|
devlink_linecard_notify(linecard, DEVLINK_CMD_LINECARD_NEW);
|
|
mutex_unlock(&linecard->state_lock);
|
|
err = linecard->ops->unprovision(linecard, linecard->priv,
|
|
extack);
|
|
if (err) {
|
|
/* Unprovisioning failed. Assume the linecard is unprovisioned
|
|
* for future operations.
|
|
*/
|
|
mutex_lock(&linecard->state_lock);
|
|
linecard->state = DEVLINK_LINECARD_STATE_UNPROVISIONED;
|
|
linecard->type = NULL;
|
|
devlink_linecard_notify(linecard, DEVLINK_CMD_LINECARD_NEW);
|
|
mutex_unlock(&linecard->state_lock);
|
|
}
|
|
return err;
|
|
|
|
out:
|
|
mutex_unlock(&linecard->state_lock);
|
|
return err;
|
|
}
|
|
|
|
static int devlink_nl_cmd_linecard_set_doit(struct sk_buff *skb,
|
|
struct genl_info *info)
|
|
{
|
|
struct devlink_linecard *linecard = info->user_ptr[1];
|
|
struct netlink_ext_ack *extack = info->extack;
|
|
int err;
|
|
|
|
if (info->attrs[DEVLINK_ATTR_LINECARD_TYPE]) {
|
|
const char *type;
|
|
|
|
type = nla_data(info->attrs[DEVLINK_ATTR_LINECARD_TYPE]);
|
|
if (strcmp(type, "")) {
|
|
err = devlink_linecard_type_set(linecard, type, extack);
|
|
if (err)
|
|
return err;
|
|
} else {
|
|
err = devlink_linecard_type_unset(linecard, extack);
|
|
if (err)
|
|
return err;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int devlink_nl_sb_fill(struct sk_buff *msg, struct devlink *devlink,
|
|
struct devlink_sb *devlink_sb,
|
|
enum devlink_command cmd, u32 portid,
|
|
u32 seq, int flags)
|
|
{
|
|
void *hdr;
|
|
|
|
hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
|
|
if (!hdr)
|
|
return -EMSGSIZE;
|
|
|
|
if (devlink_nl_put_handle(msg, devlink))
|
|
goto nla_put_failure;
|
|
if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index))
|
|
goto nla_put_failure;
|
|
if (nla_put_u32(msg, DEVLINK_ATTR_SB_SIZE, devlink_sb->size))
|
|
goto nla_put_failure;
|
|
if (nla_put_u16(msg, DEVLINK_ATTR_SB_INGRESS_POOL_COUNT,
|
|
devlink_sb->ingress_pools_count))
|
|
goto nla_put_failure;
|
|
if (nla_put_u16(msg, DEVLINK_ATTR_SB_EGRESS_POOL_COUNT,
|
|
devlink_sb->egress_pools_count))
|
|
goto nla_put_failure;
|
|
if (nla_put_u16(msg, DEVLINK_ATTR_SB_INGRESS_TC_COUNT,
|
|
devlink_sb->ingress_tc_count))
|
|
goto nla_put_failure;
|
|
if (nla_put_u16(msg, DEVLINK_ATTR_SB_EGRESS_TC_COUNT,
|
|
devlink_sb->egress_tc_count))
|
|
goto nla_put_failure;
|
|
|
|
genlmsg_end(msg, hdr);
|
|
return 0;
|
|
|
|
nla_put_failure:
|
|
genlmsg_cancel(msg, hdr);
|
|
return -EMSGSIZE;
|
|
}
|
|
|
|
static int devlink_nl_cmd_sb_get_doit(struct sk_buff *skb,
|
|
struct genl_info *info)
|
|
{
|
|
struct devlink *devlink = info->user_ptr[0];
|
|
struct devlink_sb *devlink_sb;
|
|
struct sk_buff *msg;
|
|
int err;
|
|
|
|
devlink_sb = devlink_sb_get_from_info(devlink, info);
|
|
if (IS_ERR(devlink_sb))
|
|
return PTR_ERR(devlink_sb);
|
|
|
|
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
|
|
if (!msg)
|
|
return -ENOMEM;
|
|
|
|
err = devlink_nl_sb_fill(msg, devlink, devlink_sb,
|
|
DEVLINK_CMD_SB_NEW,
|
|
info->snd_portid, info->snd_seq, 0);
|
|
if (err) {
|
|
nlmsg_free(msg);
|
|
return err;
|
|
}
|
|
|
|
return genlmsg_reply(msg, info);
|
|
}
|
|
|
|
static int devlink_nl_cmd_sb_get_dumpit(struct sk_buff *msg,
|
|
struct netlink_callback *cb)
|
|
{
|
|
struct devlink *devlink;
|
|
struct devlink_sb *devlink_sb;
|
|
int start = cb->args[0];
|
|
unsigned long index;
|
|
int idx = 0;
|
|
int err;
|
|
|
|
mutex_lock(&devlink_mutex);
|
|
xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) {
|
|
if (!devlink_try_get(devlink))
|
|
continue;
|
|
|
|
if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
|
|
goto retry;
|
|
|
|
mutex_lock(&devlink->lock);
|
|
list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
|
|
if (idx < start) {
|
|
idx++;
|
|
continue;
|
|
}
|
|
err = devlink_nl_sb_fill(msg, devlink, devlink_sb,
|
|
DEVLINK_CMD_SB_NEW,
|
|
NETLINK_CB(cb->skb).portid,
|
|
cb->nlh->nlmsg_seq,
|
|
NLM_F_MULTI);
|
|
if (err) {
|
|
mutex_unlock(&devlink->lock);
|
|
devlink_put(devlink);
|
|
goto out;
|
|
}
|
|
idx++;
|
|
}
|
|
mutex_unlock(&devlink->lock);
|
|
retry:
|
|
devlink_put(devlink);
|
|
}
|
|
out:
|
|
mutex_unlock(&devlink_mutex);
|
|
|
|
cb->args[0] = idx;
|
|
return msg->len;
|
|
}
|
|
|
|
static int devlink_nl_sb_pool_fill(struct sk_buff *msg, struct devlink *devlink,
|
|
struct devlink_sb *devlink_sb,
|
|
u16 pool_index, enum devlink_command cmd,
|
|
u32 portid, u32 seq, int flags)
|
|
{
|
|
struct devlink_sb_pool_info pool_info;
|
|
void *hdr;
|
|
int err;
|
|
|
|
err = devlink->ops->sb_pool_get(devlink, devlink_sb->index,
|
|
pool_index, &pool_info);
|
|
if (err)
|
|
return err;
|
|
|
|
hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
|
|
if (!hdr)
|
|
return -EMSGSIZE;
|
|
|
|
if (devlink_nl_put_handle(msg, devlink))
|
|
goto nla_put_failure;
|
|
if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index))
|
|
goto nla_put_failure;
|
|
if (nla_put_u16(msg, DEVLINK_ATTR_SB_POOL_INDEX, pool_index))
|
|
goto nla_put_failure;
|
|
if (nla_put_u8(msg, DEVLINK_ATTR_SB_POOL_TYPE, pool_info.pool_type))
|
|
goto nla_put_failure;
|
|
if (nla_put_u32(msg, DEVLINK_ATTR_SB_POOL_SIZE, pool_info.size))
|
|
goto nla_put_failure;
|
|
if (nla_put_u8(msg, DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE,
|
|
pool_info.threshold_type))
|
|
goto nla_put_failure;
|
|
if (nla_put_u32(msg, DEVLINK_ATTR_SB_POOL_CELL_SIZE,
|
|
pool_info.cell_size))
|
|
goto nla_put_failure;
|
|
|
|
genlmsg_end(msg, hdr);
|
|
return 0;
|
|
|
|
nla_put_failure:
|
|
genlmsg_cancel(msg, hdr);
|
|
return -EMSGSIZE;
|
|
}
|
|
|
|
static int devlink_nl_cmd_sb_pool_get_doit(struct sk_buff *skb,
|
|
struct genl_info *info)
|
|
{
|
|
struct devlink *devlink = info->user_ptr[0];
|
|
struct devlink_sb *devlink_sb;
|
|
struct sk_buff *msg;
|
|
u16 pool_index;
|
|
int err;
|
|
|
|
devlink_sb = devlink_sb_get_from_info(devlink, info);
|
|
if (IS_ERR(devlink_sb))
|
|
return PTR_ERR(devlink_sb);
|
|
|
|
err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
|
|
&pool_index);
|
|
if (err)
|
|
return err;
|
|
|
|
if (!devlink->ops->sb_pool_get)
|
|
return -EOPNOTSUPP;
|
|
|
|
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
|
|
if (!msg)
|
|
return -ENOMEM;
|
|
|
|
err = devlink_nl_sb_pool_fill(msg, devlink, devlink_sb, pool_index,
|
|
DEVLINK_CMD_SB_POOL_NEW,
|
|
info->snd_portid, info->snd_seq, 0);
|
|
if (err) {
|
|
nlmsg_free(msg);
|
|
return err;
|
|
}
|
|
|
|
return genlmsg_reply(msg, info);
|
|
}
|
|
|
|
static int __sb_pool_get_dumpit(struct sk_buff *msg, int start, int *p_idx,
|
|
struct devlink *devlink,
|
|
struct devlink_sb *devlink_sb,
|
|
u32 portid, u32 seq)
|
|
{
|
|
u16 pool_count = devlink_sb_pool_count(devlink_sb);
|
|
u16 pool_index;
|
|
int err;
|
|
|
|
for (pool_index = 0; pool_index < pool_count; pool_index++) {
|
|
if (*p_idx < start) {
|
|
(*p_idx)++;
|
|
continue;
|
|
}
|
|
err = devlink_nl_sb_pool_fill(msg, devlink,
|
|
devlink_sb,
|
|
pool_index,
|
|
DEVLINK_CMD_SB_POOL_NEW,
|
|
portid, seq, NLM_F_MULTI);
|
|
if (err)
|
|
return err;
|
|
(*p_idx)++;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int devlink_nl_cmd_sb_pool_get_dumpit(struct sk_buff *msg,
|
|
struct netlink_callback *cb)
|
|
{
|
|
struct devlink *devlink;
|
|
struct devlink_sb *devlink_sb;
|
|
int start = cb->args[0];
|
|
unsigned long index;
|
|
int idx = 0;
|
|
int err = 0;
|
|
|
|
mutex_lock(&devlink_mutex);
|
|
xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) {
|
|
if (!devlink_try_get(devlink))
|
|
continue;
|
|
|
|
if (!net_eq(devlink_net(devlink), sock_net(msg->sk)) ||
|
|
!devlink->ops->sb_pool_get)
|
|
goto retry;
|
|
|
|
mutex_lock(&devlink->lock);
|
|
list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
|
|
err = __sb_pool_get_dumpit(msg, start, &idx, devlink,
|
|
devlink_sb,
|
|
NETLINK_CB(cb->skb).portid,
|
|
cb->nlh->nlmsg_seq);
|
|
if (err == -EOPNOTSUPP) {
|
|
err = 0;
|
|
} else if (err) {
|
|
mutex_unlock(&devlink->lock);
|
|
devlink_put(devlink);
|
|
goto out;
|
|
}
|
|
}
|
|
mutex_unlock(&devlink->lock);
|
|
retry:
|
|
devlink_put(devlink);
|
|
}
|
|
out:
|
|
mutex_unlock(&devlink_mutex);
|
|
|
|
if (err != -EMSGSIZE)
|
|
return err;
|
|
|
|
cb->args[0] = idx;
|
|
return msg->len;
|
|
}
|
|
|
|
static int devlink_sb_pool_set(struct devlink *devlink, unsigned int sb_index,
|
|
u16 pool_index, u32 size,
|
|
enum devlink_sb_threshold_type threshold_type,
|
|
struct netlink_ext_ack *extack)
|
|
|
|
{
|
|
const struct devlink_ops *ops = devlink->ops;
|
|
|
|
if (ops->sb_pool_set)
|
|
return ops->sb_pool_set(devlink, sb_index, pool_index,
|
|
size, threshold_type, extack);
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
static int devlink_nl_cmd_sb_pool_set_doit(struct sk_buff *skb,
|
|
struct genl_info *info)
|
|
{
|
|
struct devlink *devlink = info->user_ptr[0];
|
|
enum devlink_sb_threshold_type threshold_type;
|
|
struct devlink_sb *devlink_sb;
|
|
u16 pool_index;
|
|
u32 size;
|
|
int err;
|
|
|
|
devlink_sb = devlink_sb_get_from_info(devlink, info);
|
|
if (IS_ERR(devlink_sb))
|
|
return PTR_ERR(devlink_sb);
|
|
|
|
err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
|
|
&pool_index);
|
|
if (err)
|
|
return err;
|
|
|
|
err = devlink_sb_th_type_get_from_info(info, &threshold_type);
|
|
if (err)
|
|
return err;
|
|
|
|
if (!info->attrs[DEVLINK_ATTR_SB_POOL_SIZE])
|
|
return -EINVAL;
|
|
|
|
size = nla_get_u32(info->attrs[DEVLINK_ATTR_SB_POOL_SIZE]);
|
|
return devlink_sb_pool_set(devlink, devlink_sb->index,
|
|
pool_index, size, threshold_type,
|
|
info->extack);
|
|
}
|
|
|
|
static int devlink_nl_sb_port_pool_fill(struct sk_buff *msg,
|
|
struct devlink *devlink,
|
|
struct devlink_port *devlink_port,
|
|
struct devlink_sb *devlink_sb,
|
|
u16 pool_index,
|
|
enum devlink_command cmd,
|
|
u32 portid, u32 seq, int flags)
|
|
{
|
|
const struct devlink_ops *ops = devlink->ops;
|
|
u32 threshold;
|
|
void *hdr;
|
|
int err;
|
|
|
|
err = ops->sb_port_pool_get(devlink_port, devlink_sb->index,
|
|
pool_index, &threshold);
|
|
if (err)
|
|
return err;
|
|
|
|
hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
|
|
if (!hdr)
|
|
return -EMSGSIZE;
|
|
|
|
if (devlink_nl_put_handle(msg, devlink))
|
|
goto nla_put_failure;
|
|
if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, devlink_port->index))
|
|
goto nla_put_failure;
|
|
if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index))
|
|
goto nla_put_failure;
|
|
if (nla_put_u16(msg, DEVLINK_ATTR_SB_POOL_INDEX, pool_index))
|
|
goto nla_put_failure;
|
|
if (nla_put_u32(msg, DEVLINK_ATTR_SB_THRESHOLD, threshold))
|
|
goto nla_put_failure;
|
|
|
|
if (ops->sb_occ_port_pool_get) {
|
|
u32 cur;
|
|
u32 max;
|
|
|
|
err = ops->sb_occ_port_pool_get(devlink_port, devlink_sb->index,
|
|
pool_index, &cur, &max);
|
|
if (err && err != -EOPNOTSUPP)
|
|
goto sb_occ_get_failure;
|
|
if (!err) {
|
|
if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_CUR, cur))
|
|
goto nla_put_failure;
|
|
if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_MAX, max))
|
|
goto nla_put_failure;
|
|
}
|
|
}
|
|
|
|
genlmsg_end(msg, hdr);
|
|
return 0;
|
|
|
|
nla_put_failure:
|
|
err = -EMSGSIZE;
|
|
sb_occ_get_failure:
|
|
genlmsg_cancel(msg, hdr);
|
|
return err;
|
|
}
|
|
|
|
static int devlink_nl_cmd_sb_port_pool_get_doit(struct sk_buff *skb,
|
|
struct genl_info *info)
|
|
{
|
|
struct devlink_port *devlink_port = info->user_ptr[1];
|
|
struct devlink *devlink = devlink_port->devlink;
|
|
struct devlink_sb *devlink_sb;
|
|
struct sk_buff *msg;
|
|
u16 pool_index;
|
|
int err;
|
|
|
|
devlink_sb = devlink_sb_get_from_info(devlink, info);
|
|
if (IS_ERR(devlink_sb))
|
|
return PTR_ERR(devlink_sb);
|
|
|
|
err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
|
|
&pool_index);
|
|
if (err)
|
|
return err;
|
|
|
|
if (!devlink->ops->sb_port_pool_get)
|
|
return -EOPNOTSUPP;
|
|
|
|
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
|
|
if (!msg)
|
|
return -ENOMEM;
|
|
|
|
err = devlink_nl_sb_port_pool_fill(msg, devlink, devlink_port,
|
|
devlink_sb, pool_index,
|
|
DEVLINK_CMD_SB_PORT_POOL_NEW,
|
|
info->snd_portid, info->snd_seq, 0);
|
|
if (err) {
|
|
nlmsg_free(msg);
|
|
return err;
|
|
}
|
|
|
|
return genlmsg_reply(msg, info);
|
|
}
|
|
|
|
static int __sb_port_pool_get_dumpit(struct sk_buff *msg, int start, int *p_idx,
|
|
struct devlink *devlink,
|
|
struct devlink_sb *devlink_sb,
|
|
u32 portid, u32 seq)
|
|
{
|
|
struct devlink_port *devlink_port;
|
|
u16 pool_count = devlink_sb_pool_count(devlink_sb);
|
|
u16 pool_index;
|
|
int err;
|
|
|
|
list_for_each_entry(devlink_port, &devlink->port_list, list) {
|
|
for (pool_index = 0; pool_index < pool_count; pool_index++) {
|
|
if (*p_idx < start) {
|
|
(*p_idx)++;
|
|
continue;
|
|
}
|
|
err = devlink_nl_sb_port_pool_fill(msg, devlink,
|
|
devlink_port,
|
|
devlink_sb,
|
|
pool_index,
|
|
DEVLINK_CMD_SB_PORT_POOL_NEW,
|
|
portid, seq,
|
|
NLM_F_MULTI);
|
|
if (err)
|
|
return err;
|
|
(*p_idx)++;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int devlink_nl_cmd_sb_port_pool_get_dumpit(struct sk_buff *msg,
|
|
struct netlink_callback *cb)
|
|
{
|
|
struct devlink *devlink;
|
|
struct devlink_sb *devlink_sb;
|
|
int start = cb->args[0];
|
|
unsigned long index;
|
|
int idx = 0;
|
|
int err = 0;
|
|
|
|
mutex_lock(&devlink_mutex);
|
|
xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) {
|
|
if (!devlink_try_get(devlink))
|
|
continue;
|
|
|
|
if (!net_eq(devlink_net(devlink), sock_net(msg->sk)) ||
|
|
!devlink->ops->sb_port_pool_get)
|
|
goto retry;
|
|
|
|
mutex_lock(&devlink->lock);
|
|
list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
|
|
err = __sb_port_pool_get_dumpit(msg, start, &idx,
|
|
devlink, devlink_sb,
|
|
NETLINK_CB(cb->skb).portid,
|
|
cb->nlh->nlmsg_seq);
|
|
if (err == -EOPNOTSUPP) {
|
|
err = 0;
|
|
} else if (err) {
|
|
mutex_unlock(&devlink->lock);
|
|
devlink_put(devlink);
|
|
goto out;
|
|
}
|
|
}
|
|
mutex_unlock(&devlink->lock);
|
|
retry:
|
|
devlink_put(devlink);
|
|
}
|
|
out:
|
|
mutex_unlock(&devlink_mutex);
|
|
|
|
if (err != -EMSGSIZE)
|
|
return err;
|
|
|
|
cb->args[0] = idx;
|
|
return msg->len;
|
|
}
|
|
|
|
static int devlink_sb_port_pool_set(struct devlink_port *devlink_port,
|
|
unsigned int sb_index, u16 pool_index,
|
|
u32 threshold,
|
|
struct netlink_ext_ack *extack)
|
|
|
|
{
|
|
const struct devlink_ops *ops = devlink_port->devlink->ops;
|
|
|
|
if (ops->sb_port_pool_set)
|
|
return ops->sb_port_pool_set(devlink_port, sb_index,
|
|
pool_index, threshold, extack);
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
static int devlink_nl_cmd_sb_port_pool_set_doit(struct sk_buff *skb,
|
|
struct genl_info *info)
|
|
{
|
|
struct devlink_port *devlink_port = info->user_ptr[1];
|
|
struct devlink *devlink = info->user_ptr[0];
|
|
struct devlink_sb *devlink_sb;
|
|
u16 pool_index;
|
|
u32 threshold;
|
|
int err;
|
|
|
|
devlink_sb = devlink_sb_get_from_info(devlink, info);
|
|
if (IS_ERR(devlink_sb))
|
|
return PTR_ERR(devlink_sb);
|
|
|
|
err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
|
|
&pool_index);
|
|
if (err)
|
|
return err;
|
|
|
|
if (!info->attrs[DEVLINK_ATTR_SB_THRESHOLD])
|
|
return -EINVAL;
|
|
|
|
threshold = nla_get_u32(info->attrs[DEVLINK_ATTR_SB_THRESHOLD]);
|
|
return devlink_sb_port_pool_set(devlink_port, devlink_sb->index,
|
|
pool_index, threshold, info->extack);
|
|
}
|
|
|
|
static int
|
|
devlink_nl_sb_tc_pool_bind_fill(struct sk_buff *msg, struct devlink *devlink,
|
|
struct devlink_port *devlink_port,
|
|
struct devlink_sb *devlink_sb, u16 tc_index,
|
|
enum devlink_sb_pool_type pool_type,
|
|
enum devlink_command cmd,
|
|
u32 portid, u32 seq, int flags)
|
|
{
|
|
const struct devlink_ops *ops = devlink->ops;
|
|
u16 pool_index;
|
|
u32 threshold;
|
|
void *hdr;
|
|
int err;
|
|
|
|
err = ops->sb_tc_pool_bind_get(devlink_port, devlink_sb->index,
|
|
tc_index, pool_type,
|
|
&pool_index, &threshold);
|
|
if (err)
|
|
return err;
|
|
|
|
hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
|
|
if (!hdr)
|
|
return -EMSGSIZE;
|
|
|
|
if (devlink_nl_put_handle(msg, devlink))
|
|
goto nla_put_failure;
|
|
if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, devlink_port->index))
|
|
goto nla_put_failure;
|
|
if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index))
|
|
goto nla_put_failure;
|
|
if (nla_put_u16(msg, DEVLINK_ATTR_SB_TC_INDEX, tc_index))
|
|
goto nla_put_failure;
|
|
if (nla_put_u8(msg, DEVLINK_ATTR_SB_POOL_TYPE, pool_type))
|
|
goto nla_put_failure;
|
|
if (nla_put_u16(msg, DEVLINK_ATTR_SB_POOL_INDEX, pool_index))
|
|
goto nla_put_failure;
|
|
if (nla_put_u32(msg, DEVLINK_ATTR_SB_THRESHOLD, threshold))
|
|
goto nla_put_failure;
|
|
|
|
if (ops->sb_occ_tc_port_bind_get) {
|
|
u32 cur;
|
|
u32 max;
|
|
|
|
err = ops->sb_occ_tc_port_bind_get(devlink_port,
|
|
devlink_sb->index,
|
|
tc_index, pool_type,
|
|
&cur, &max);
|
|
if (err && err != -EOPNOTSUPP)
|
|
return err;
|
|
if (!err) {
|
|
if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_CUR, cur))
|
|
goto nla_put_failure;
|
|
if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_MAX, max))
|
|
goto nla_put_failure;
|
|
}
|
|
}
|
|
|
|
genlmsg_end(msg, hdr);
|
|
return 0;
|
|
|
|
nla_put_failure:
|
|
genlmsg_cancel(msg, hdr);
|
|
return -EMSGSIZE;
|
|
}
|
|
|
|
static int devlink_nl_cmd_sb_tc_pool_bind_get_doit(struct sk_buff *skb,
|
|
struct genl_info *info)
|
|
{
|
|
struct devlink_port *devlink_port = info->user_ptr[1];
|
|
struct devlink *devlink = devlink_port->devlink;
|
|
struct devlink_sb *devlink_sb;
|
|
struct sk_buff *msg;
|
|
enum devlink_sb_pool_type pool_type;
|
|
u16 tc_index;
|
|
int err;
|
|
|
|
devlink_sb = devlink_sb_get_from_info(devlink, info);
|
|
if (IS_ERR(devlink_sb))
|
|
return PTR_ERR(devlink_sb);
|
|
|
|
err = devlink_sb_pool_type_get_from_info(info, &pool_type);
|
|
if (err)
|
|
return err;
|
|
|
|
err = devlink_sb_tc_index_get_from_info(devlink_sb, info,
|
|
pool_type, &tc_index);
|
|
if (err)
|
|
return err;
|
|
|
|
if (!devlink->ops->sb_tc_pool_bind_get)
|
|
return -EOPNOTSUPP;
|
|
|
|
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
|
|
if (!msg)
|
|
return -ENOMEM;
|
|
|
|
err = devlink_nl_sb_tc_pool_bind_fill(msg, devlink, devlink_port,
|
|
devlink_sb, tc_index, pool_type,
|
|
DEVLINK_CMD_SB_TC_POOL_BIND_NEW,
|
|
info->snd_portid,
|
|
info->snd_seq, 0);
|
|
if (err) {
|
|
nlmsg_free(msg);
|
|
return err;
|
|
}
|
|
|
|
return genlmsg_reply(msg, info);
|
|
}
|
|
|
|
static int __sb_tc_pool_bind_get_dumpit(struct sk_buff *msg,
|
|
int start, int *p_idx,
|
|
struct devlink *devlink,
|
|
struct devlink_sb *devlink_sb,
|
|
u32 portid, u32 seq)
|
|
{
|
|
struct devlink_port *devlink_port;
|
|
u16 tc_index;
|
|
int err;
|
|
|
|
list_for_each_entry(devlink_port, &devlink->port_list, list) {
|
|
for (tc_index = 0;
|
|
tc_index < devlink_sb->ingress_tc_count; tc_index++) {
|
|
if (*p_idx < start) {
|
|
(*p_idx)++;
|
|
continue;
|
|
}
|
|
err = devlink_nl_sb_tc_pool_bind_fill(msg, devlink,
|
|
devlink_port,
|
|
devlink_sb,
|
|
tc_index,
|
|
DEVLINK_SB_POOL_TYPE_INGRESS,
|
|
DEVLINK_CMD_SB_TC_POOL_BIND_NEW,
|
|
portid, seq,
|
|
NLM_F_MULTI);
|
|
if (err)
|
|
return err;
|
|
(*p_idx)++;
|
|
}
|
|
for (tc_index = 0;
|
|
tc_index < devlink_sb->egress_tc_count; tc_index++) {
|
|
if (*p_idx < start) {
|
|
(*p_idx)++;
|
|
continue;
|
|
}
|
|
err = devlink_nl_sb_tc_pool_bind_fill(msg, devlink,
|
|
devlink_port,
|
|
devlink_sb,
|
|
tc_index,
|
|
DEVLINK_SB_POOL_TYPE_EGRESS,
|
|
DEVLINK_CMD_SB_TC_POOL_BIND_NEW,
|
|
portid, seq,
|
|
NLM_F_MULTI);
|
|
if (err)
|
|
return err;
|
|
(*p_idx)++;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
devlink_nl_cmd_sb_tc_pool_bind_get_dumpit(struct sk_buff *msg,
|
|
struct netlink_callback *cb)
|
|
{
|
|
struct devlink *devlink;
|
|
struct devlink_sb *devlink_sb;
|
|
int start = cb->args[0];
|
|
unsigned long index;
|
|
int idx = 0;
|
|
int err = 0;
|
|
|
|
mutex_lock(&devlink_mutex);
|
|
xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) {
|
|
if (!devlink_try_get(devlink))
|
|
continue;
|
|
|
|
if (!net_eq(devlink_net(devlink), sock_net(msg->sk)) ||
|
|
!devlink->ops->sb_tc_pool_bind_get)
|
|
goto retry;
|
|
|
|
mutex_lock(&devlink->lock);
|
|
list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
|
|
err = __sb_tc_pool_bind_get_dumpit(msg, start, &idx,
|
|
devlink,
|
|
devlink_sb,
|
|
NETLINK_CB(cb->skb).portid,
|
|
cb->nlh->nlmsg_seq);
|
|
if (err == -EOPNOTSUPP) {
|
|
err = 0;
|
|
} else if (err) {
|
|
mutex_unlock(&devlink->lock);
|
|
devlink_put(devlink);
|
|
goto out;
|
|
}
|
|
}
|
|
mutex_unlock(&devlink->lock);
|
|
retry:
|
|
devlink_put(devlink);
|
|
}
|
|
out:
|
|
mutex_unlock(&devlink_mutex);
|
|
|
|
if (err != -EMSGSIZE)
|
|
return err;
|
|
|
|
cb->args[0] = idx;
|
|
return msg->len;
|
|
}
|
|
|
|
static int devlink_sb_tc_pool_bind_set(struct devlink_port *devlink_port,
|
|
unsigned int sb_index, u16 tc_index,
|
|
enum devlink_sb_pool_type pool_type,
|
|
u16 pool_index, u32 threshold,
|
|
struct netlink_ext_ack *extack)
|
|
|
|
{
|
|
const struct devlink_ops *ops = devlink_port->devlink->ops;
|
|
|
|
if (ops->sb_tc_pool_bind_set)
|
|
return ops->sb_tc_pool_bind_set(devlink_port, sb_index,
|
|
tc_index, pool_type,
|
|
pool_index, threshold, extack);
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
static int devlink_nl_cmd_sb_tc_pool_bind_set_doit(struct sk_buff *skb,
|
|
struct genl_info *info)
|
|
{
|
|
struct devlink_port *devlink_port = info->user_ptr[1];
|
|
struct devlink *devlink = info->user_ptr[0];
|
|
enum devlink_sb_pool_type pool_type;
|
|
struct devlink_sb *devlink_sb;
|
|
u16 tc_index;
|
|
u16 pool_index;
|
|
u32 threshold;
|
|
int err;
|
|
|
|
devlink_sb = devlink_sb_get_from_info(devlink, info);
|
|
if (IS_ERR(devlink_sb))
|
|
return PTR_ERR(devlink_sb);
|
|
|
|
err = devlink_sb_pool_type_get_from_info(info, &pool_type);
|
|
if (err)
|
|
return err;
|
|
|
|
err = devlink_sb_tc_index_get_from_info(devlink_sb, info,
|
|
pool_type, &tc_index);
|
|
if (err)
|
|
return err;
|
|
|
|
err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
|
|
&pool_index);
|
|
if (err)
|
|
return err;
|
|
|
|
if (!info->attrs[DEVLINK_ATTR_SB_THRESHOLD])
|
|
return -EINVAL;
|
|
|
|
threshold = nla_get_u32(info->attrs[DEVLINK_ATTR_SB_THRESHOLD]);
|
|
return devlink_sb_tc_pool_bind_set(devlink_port, devlink_sb->index,
|
|
tc_index, pool_type,
|
|
pool_index, threshold, info->extack);
|
|
}
|
|
|
|
static int devlink_nl_cmd_sb_occ_snapshot_doit(struct sk_buff *skb,
|
|
struct genl_info *info)
|
|
{
|
|
struct devlink *devlink = info->user_ptr[0];
|
|
const struct devlink_ops *ops = devlink->ops;
|
|
struct devlink_sb *devlink_sb;
|
|
|
|
devlink_sb = devlink_sb_get_from_info(devlink, info);
|
|
if (IS_ERR(devlink_sb))
|
|
return PTR_ERR(devlink_sb);
|
|
|
|
if (ops->sb_occ_snapshot)
|
|
return ops->sb_occ_snapshot(devlink, devlink_sb->index);
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
static int devlink_nl_cmd_sb_occ_max_clear_doit(struct sk_buff *skb,
|
|
struct genl_info *info)
|
|
{
|
|
struct devlink *devlink = info->user_ptr[0];
|
|
const struct devlink_ops *ops = devlink->ops;
|
|
struct devlink_sb *devlink_sb;
|
|
|
|
devlink_sb = devlink_sb_get_from_info(devlink, info);
|
|
if (IS_ERR(devlink_sb))
|
|
return PTR_ERR(devlink_sb);
|
|
|
|
if (ops->sb_occ_max_clear)
|
|
return ops->sb_occ_max_clear(devlink, devlink_sb->index);
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
static int devlink_nl_eswitch_fill(struct sk_buff *msg, struct devlink *devlink,
|
|
enum devlink_command cmd, u32 portid,
|
|
u32 seq, int flags)
|
|
{
|
|
const struct devlink_ops *ops = devlink->ops;
|
|
enum devlink_eswitch_encap_mode encap_mode;
|
|
u8 inline_mode;
|
|
void *hdr;
|
|
int err = 0;
|
|
u16 mode;
|
|
|
|
hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
|
|
if (!hdr)
|
|
return -EMSGSIZE;
|
|
|
|
err = devlink_nl_put_handle(msg, devlink);
|
|
if (err)
|
|
goto nla_put_failure;
|
|
|
|
if (ops->eswitch_mode_get) {
|
|
err = ops->eswitch_mode_get(devlink, &mode);
|
|
if (err)
|
|
goto nla_put_failure;
|
|
err = nla_put_u16(msg, DEVLINK_ATTR_ESWITCH_MODE, mode);
|
|
if (err)
|
|
goto nla_put_failure;
|
|
}
|
|
|
|
if (ops->eswitch_inline_mode_get) {
|
|
err = ops->eswitch_inline_mode_get(devlink, &inline_mode);
|
|
if (err)
|
|
goto nla_put_failure;
|
|
err = nla_put_u8(msg, DEVLINK_ATTR_ESWITCH_INLINE_MODE,
|
|
inline_mode);
|
|
if (err)
|
|
goto nla_put_failure;
|
|
}
|
|
|
|
if (ops->eswitch_encap_mode_get) {
|
|
err = ops->eswitch_encap_mode_get(devlink, &encap_mode);
|
|
if (err)
|
|
goto nla_put_failure;
|
|
err = nla_put_u8(msg, DEVLINK_ATTR_ESWITCH_ENCAP_MODE, encap_mode);
|
|
if (err)
|
|
goto nla_put_failure;
|
|
}
|
|
|
|
genlmsg_end(msg, hdr);
|
|
return 0;
|
|
|
|
nla_put_failure:
|
|
genlmsg_cancel(msg, hdr);
|
|
return err;
|
|
}
|
|
|
|
static int devlink_nl_cmd_eswitch_get_doit(struct sk_buff *skb,
|
|
struct genl_info *info)
|
|
{
|
|
struct devlink *devlink = info->user_ptr[0];
|
|
struct sk_buff *msg;
|
|
int err;
|
|
|
|
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
|
|
if (!msg)
|
|
return -ENOMEM;
|
|
|
|
err = devlink_nl_eswitch_fill(msg, devlink, DEVLINK_CMD_ESWITCH_GET,
|
|
info->snd_portid, info->snd_seq, 0);
|
|
|
|
if (err) {
|
|
nlmsg_free(msg);
|
|
return err;
|
|
}
|
|
|
|
return genlmsg_reply(msg, info);
|
|
}
|
|
|
|
static int devlink_rate_nodes_check(struct devlink *devlink, u16 mode,
|
|
struct netlink_ext_ack *extack)
|
|
{
|
|
struct devlink_rate *devlink_rate;
|
|
|
|
list_for_each_entry(devlink_rate, &devlink->rate_list, list)
|
|
if (devlink_rate_is_node(devlink_rate)) {
|
|
NL_SET_ERR_MSG_MOD(extack, "Rate node(s) exists.");
|
|
return -EBUSY;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int devlink_nl_cmd_eswitch_set_doit(struct sk_buff *skb,
|
|
struct genl_info *info)
|
|
{
|
|
struct devlink *devlink = info->user_ptr[0];
|
|
const struct devlink_ops *ops = devlink->ops;
|
|
enum devlink_eswitch_encap_mode encap_mode;
|
|
u8 inline_mode;
|
|
int err = 0;
|
|
u16 mode;
|
|
|
|
if (info->attrs[DEVLINK_ATTR_ESWITCH_MODE]) {
|
|
if (!ops->eswitch_mode_set)
|
|
return -EOPNOTSUPP;
|
|
mode = nla_get_u16(info->attrs[DEVLINK_ATTR_ESWITCH_MODE]);
|
|
err = devlink_rate_nodes_check(devlink, mode, info->extack);
|
|
if (err)
|
|
return err;
|
|
err = ops->eswitch_mode_set(devlink, mode, info->extack);
|
|
if (err)
|
|
return err;
|
|
}
|
|
|
|
if (info->attrs[DEVLINK_ATTR_ESWITCH_INLINE_MODE]) {
|
|
if (!ops->eswitch_inline_mode_set)
|
|
return -EOPNOTSUPP;
|
|
inline_mode = nla_get_u8(
|
|
info->attrs[DEVLINK_ATTR_ESWITCH_INLINE_MODE]);
|
|
err = ops->eswitch_inline_mode_set(devlink, inline_mode,
|
|
info->extack);
|
|
if (err)
|
|
return err;
|
|
}
|
|
|
|
if (info->attrs[DEVLINK_ATTR_ESWITCH_ENCAP_MODE]) {
|
|
if (!ops->eswitch_encap_mode_set)
|
|
return -EOPNOTSUPP;
|
|
encap_mode = nla_get_u8(info->attrs[DEVLINK_ATTR_ESWITCH_ENCAP_MODE]);
|
|
err = ops->eswitch_encap_mode_set(devlink, encap_mode,
|
|
info->extack);
|
|
if (err)
|
|
return err;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int devlink_dpipe_match_put(struct sk_buff *skb,
|
|
struct devlink_dpipe_match *match)
|
|
{
|
|
struct devlink_dpipe_header *header = match->header;
|
|
struct devlink_dpipe_field *field = &header->fields[match->field_id];
|
|
struct nlattr *match_attr;
|
|
|
|
match_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_MATCH);
|
|
if (!match_attr)
|
|
return -EMSGSIZE;
|
|
|
|
if (nla_put_u32(skb, DEVLINK_ATTR_DPIPE_MATCH_TYPE, match->type) ||
|
|
nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_INDEX, match->header_index) ||
|
|
nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_ID, header->id) ||
|
|
nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_ID, field->id) ||
|
|
nla_put_u8(skb, DEVLINK_ATTR_DPIPE_HEADER_GLOBAL, header->global))
|
|
goto nla_put_failure;
|
|
|
|
nla_nest_end(skb, match_attr);
|
|
return 0;
|
|
|
|
nla_put_failure:
|
|
nla_nest_cancel(skb, match_attr);
|
|
return -EMSGSIZE;
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_dpipe_match_put);
|
|
|
|
static int devlink_dpipe_matches_put(struct devlink_dpipe_table *table,
|
|
struct sk_buff *skb)
|
|
{
|
|
struct nlattr *matches_attr;
|
|
|
|
matches_attr = nla_nest_start_noflag(skb,
|
|
DEVLINK_ATTR_DPIPE_TABLE_MATCHES);
|
|
if (!matches_attr)
|
|
return -EMSGSIZE;
|
|
|
|
if (table->table_ops->matches_dump(table->priv, skb))
|
|
goto nla_put_failure;
|
|
|
|
nla_nest_end(skb, matches_attr);
|
|
return 0;
|
|
|
|
nla_put_failure:
|
|
nla_nest_cancel(skb, matches_attr);
|
|
return -EMSGSIZE;
|
|
}
|
|
|
|
int devlink_dpipe_action_put(struct sk_buff *skb,
|
|
struct devlink_dpipe_action *action)
|
|
{
|
|
struct devlink_dpipe_header *header = action->header;
|
|
struct devlink_dpipe_field *field = &header->fields[action->field_id];
|
|
struct nlattr *action_attr;
|
|
|
|
action_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_ACTION);
|
|
if (!action_attr)
|
|
return -EMSGSIZE;
|
|
|
|
if (nla_put_u32(skb, DEVLINK_ATTR_DPIPE_ACTION_TYPE, action->type) ||
|
|
nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_INDEX, action->header_index) ||
|
|
nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_ID, header->id) ||
|
|
nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_ID, field->id) ||
|
|
nla_put_u8(skb, DEVLINK_ATTR_DPIPE_HEADER_GLOBAL, header->global))
|
|
goto nla_put_failure;
|
|
|
|
nla_nest_end(skb, action_attr);
|
|
return 0;
|
|
|
|
nla_put_failure:
|
|
nla_nest_cancel(skb, action_attr);
|
|
return -EMSGSIZE;
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_dpipe_action_put);
|
|
|
|
static int devlink_dpipe_actions_put(struct devlink_dpipe_table *table,
|
|
struct sk_buff *skb)
|
|
{
|
|
struct nlattr *actions_attr;
|
|
|
|
actions_attr = nla_nest_start_noflag(skb,
|
|
DEVLINK_ATTR_DPIPE_TABLE_ACTIONS);
|
|
if (!actions_attr)
|
|
return -EMSGSIZE;
|
|
|
|
if (table->table_ops->actions_dump(table->priv, skb))
|
|
goto nla_put_failure;
|
|
|
|
nla_nest_end(skb, actions_attr);
|
|
return 0;
|
|
|
|
nla_put_failure:
|
|
nla_nest_cancel(skb, actions_attr);
|
|
return -EMSGSIZE;
|
|
}
|
|
|
|
static int devlink_dpipe_table_put(struct sk_buff *skb,
|
|
struct devlink_dpipe_table *table)
|
|
{
|
|
struct nlattr *table_attr;
|
|
u64 table_size;
|
|
|
|
table_size = table->table_ops->size_get(table->priv);
|
|
table_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_TABLE);
|
|
if (!table_attr)
|
|
return -EMSGSIZE;
|
|
|
|
if (nla_put_string(skb, DEVLINK_ATTR_DPIPE_TABLE_NAME, table->name) ||
|
|
nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_TABLE_SIZE, table_size,
|
|
DEVLINK_ATTR_PAD))
|
|
goto nla_put_failure;
|
|
if (nla_put_u8(skb, DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED,
|
|
table->counters_enabled))
|
|
goto nla_put_failure;
|
|
|
|
if (table->resource_valid) {
|
|
if (nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_TABLE_RESOURCE_ID,
|
|
table->resource_id, DEVLINK_ATTR_PAD) ||
|
|
nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_TABLE_RESOURCE_UNITS,
|
|
table->resource_units, DEVLINK_ATTR_PAD))
|
|
goto nla_put_failure;
|
|
}
|
|
if (devlink_dpipe_matches_put(table, skb))
|
|
goto nla_put_failure;
|
|
|
|
if (devlink_dpipe_actions_put(table, skb))
|
|
goto nla_put_failure;
|
|
|
|
nla_nest_end(skb, table_attr);
|
|
return 0;
|
|
|
|
nla_put_failure:
|
|
nla_nest_cancel(skb, table_attr);
|
|
return -EMSGSIZE;
|
|
}
|
|
|
|
static int devlink_dpipe_send_and_alloc_skb(struct sk_buff **pskb,
|
|
struct genl_info *info)
|
|
{
|
|
int err;
|
|
|
|
if (*pskb) {
|
|
err = genlmsg_reply(*pskb, info);
|
|
if (err)
|
|
return err;
|
|
}
|
|
*pskb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
|
|
if (!*pskb)
|
|
return -ENOMEM;
|
|
return 0;
|
|
}
|
|
|
|
static int devlink_dpipe_tables_fill(struct genl_info *info,
|
|
enum devlink_command cmd, int flags,
|
|
struct list_head *dpipe_tables,
|
|
const char *table_name)
|
|
{
|
|
struct devlink *devlink = info->user_ptr[0];
|
|
struct devlink_dpipe_table *table;
|
|
struct nlattr *tables_attr;
|
|
struct sk_buff *skb = NULL;
|
|
struct nlmsghdr *nlh;
|
|
bool incomplete;
|
|
void *hdr;
|
|
int i;
|
|
int err;
|
|
|
|
table = list_first_entry(dpipe_tables,
|
|
struct devlink_dpipe_table, list);
|
|
start_again:
|
|
err = devlink_dpipe_send_and_alloc_skb(&skb, info);
|
|
if (err)
|
|
return err;
|
|
|
|
hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq,
|
|
&devlink_nl_family, NLM_F_MULTI, cmd);
|
|
if (!hdr) {
|
|
nlmsg_free(skb);
|
|
return -EMSGSIZE;
|
|
}
|
|
|
|
if (devlink_nl_put_handle(skb, devlink))
|
|
goto nla_put_failure;
|
|
tables_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_TABLES);
|
|
if (!tables_attr)
|
|
goto nla_put_failure;
|
|
|
|
i = 0;
|
|
incomplete = false;
|
|
list_for_each_entry_from(table, dpipe_tables, list) {
|
|
if (!table_name) {
|
|
err = devlink_dpipe_table_put(skb, table);
|
|
if (err) {
|
|
if (!i)
|
|
goto err_table_put;
|
|
incomplete = true;
|
|
break;
|
|
}
|
|
} else {
|
|
if (!strcmp(table->name, table_name)) {
|
|
err = devlink_dpipe_table_put(skb, table);
|
|
if (err)
|
|
break;
|
|
}
|
|
}
|
|
i++;
|
|
}
|
|
|
|
nla_nest_end(skb, tables_attr);
|
|
genlmsg_end(skb, hdr);
|
|
if (incomplete)
|
|
goto start_again;
|
|
|
|
send_done:
|
|
nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq,
|
|
NLMSG_DONE, 0, flags | NLM_F_MULTI);
|
|
if (!nlh) {
|
|
err = devlink_dpipe_send_and_alloc_skb(&skb, info);
|
|
if (err)
|
|
return err;
|
|
goto send_done;
|
|
}
|
|
|
|
return genlmsg_reply(skb, info);
|
|
|
|
nla_put_failure:
|
|
err = -EMSGSIZE;
|
|
err_table_put:
|
|
nlmsg_free(skb);
|
|
return err;
|
|
}
|
|
|
|
static int devlink_nl_cmd_dpipe_table_get(struct sk_buff *skb,
|
|
struct genl_info *info)
|
|
{
|
|
struct devlink *devlink = info->user_ptr[0];
|
|
const char *table_name = NULL;
|
|
|
|
if (info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME])
|
|
table_name = nla_data(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME]);
|
|
|
|
return devlink_dpipe_tables_fill(info, DEVLINK_CMD_DPIPE_TABLE_GET, 0,
|
|
&devlink->dpipe_table_list,
|
|
table_name);
|
|
}
|
|
|
|
static int devlink_dpipe_value_put(struct sk_buff *skb,
|
|
struct devlink_dpipe_value *value)
|
|
{
|
|
if (nla_put(skb, DEVLINK_ATTR_DPIPE_VALUE,
|
|
value->value_size, value->value))
|
|
return -EMSGSIZE;
|
|
if (value->mask)
|
|
if (nla_put(skb, DEVLINK_ATTR_DPIPE_VALUE_MASK,
|
|
value->value_size, value->mask))
|
|
return -EMSGSIZE;
|
|
if (value->mapping_valid)
|
|
if (nla_put_u32(skb, DEVLINK_ATTR_DPIPE_VALUE_MAPPING,
|
|
value->mapping_value))
|
|
return -EMSGSIZE;
|
|
return 0;
|
|
}
|
|
|
|
static int devlink_dpipe_action_value_put(struct sk_buff *skb,
|
|
struct devlink_dpipe_value *value)
|
|
{
|
|
if (!value->action)
|
|
return -EINVAL;
|
|
if (devlink_dpipe_action_put(skb, value->action))
|
|
return -EMSGSIZE;
|
|
if (devlink_dpipe_value_put(skb, value))
|
|
return -EMSGSIZE;
|
|
return 0;
|
|
}
|
|
|
|
static int devlink_dpipe_action_values_put(struct sk_buff *skb,
|
|
struct devlink_dpipe_value *values,
|
|
unsigned int values_count)
|
|
{
|
|
struct nlattr *action_attr;
|
|
int i;
|
|
int err;
|
|
|
|
for (i = 0; i < values_count; i++) {
|
|
action_attr = nla_nest_start_noflag(skb,
|
|
DEVLINK_ATTR_DPIPE_ACTION_VALUE);
|
|
if (!action_attr)
|
|
return -EMSGSIZE;
|
|
err = devlink_dpipe_action_value_put(skb, &values[i]);
|
|
if (err)
|
|
goto err_action_value_put;
|
|
nla_nest_end(skb, action_attr);
|
|
}
|
|
return 0;
|
|
|
|
err_action_value_put:
|
|
nla_nest_cancel(skb, action_attr);
|
|
return err;
|
|
}
|
|
|
|
static int devlink_dpipe_match_value_put(struct sk_buff *skb,
|
|
struct devlink_dpipe_value *value)
|
|
{
|
|
if (!value->match)
|
|
return -EINVAL;
|
|
if (devlink_dpipe_match_put(skb, value->match))
|
|
return -EMSGSIZE;
|
|
if (devlink_dpipe_value_put(skb, value))
|
|
return -EMSGSIZE;
|
|
return 0;
|
|
}
|
|
|
|
static int devlink_dpipe_match_values_put(struct sk_buff *skb,
|
|
struct devlink_dpipe_value *values,
|
|
unsigned int values_count)
|
|
{
|
|
struct nlattr *match_attr;
|
|
int i;
|
|
int err;
|
|
|
|
for (i = 0; i < values_count; i++) {
|
|
match_attr = nla_nest_start_noflag(skb,
|
|
DEVLINK_ATTR_DPIPE_MATCH_VALUE);
|
|
if (!match_attr)
|
|
return -EMSGSIZE;
|
|
err = devlink_dpipe_match_value_put(skb, &values[i]);
|
|
if (err)
|
|
goto err_match_value_put;
|
|
nla_nest_end(skb, match_attr);
|
|
}
|
|
return 0;
|
|
|
|
err_match_value_put:
|
|
nla_nest_cancel(skb, match_attr);
|
|
return err;
|
|
}
|
|
|
|
static int devlink_dpipe_entry_put(struct sk_buff *skb,
|
|
struct devlink_dpipe_entry *entry)
|
|
{
|
|
struct nlattr *entry_attr, *matches_attr, *actions_attr;
|
|
int err;
|
|
|
|
entry_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_ENTRY);
|
|
if (!entry_attr)
|
|
return -EMSGSIZE;
|
|
|
|
if (nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_ENTRY_INDEX, entry->index,
|
|
DEVLINK_ATTR_PAD))
|
|
goto nla_put_failure;
|
|
if (entry->counter_valid)
|
|
if (nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_ENTRY_COUNTER,
|
|
entry->counter, DEVLINK_ATTR_PAD))
|
|
goto nla_put_failure;
|
|
|
|
matches_attr = nla_nest_start_noflag(skb,
|
|
DEVLINK_ATTR_DPIPE_ENTRY_MATCH_VALUES);
|
|
if (!matches_attr)
|
|
goto nla_put_failure;
|
|
|
|
err = devlink_dpipe_match_values_put(skb, entry->match_values,
|
|
entry->match_values_count);
|
|
if (err) {
|
|
nla_nest_cancel(skb, matches_attr);
|
|
goto err_match_values_put;
|
|
}
|
|
nla_nest_end(skb, matches_attr);
|
|
|
|
actions_attr = nla_nest_start_noflag(skb,
|
|
DEVLINK_ATTR_DPIPE_ENTRY_ACTION_VALUES);
|
|
if (!actions_attr)
|
|
goto nla_put_failure;
|
|
|
|
err = devlink_dpipe_action_values_put(skb, entry->action_values,
|
|
entry->action_values_count);
|
|
if (err) {
|
|
nla_nest_cancel(skb, actions_attr);
|
|
goto err_action_values_put;
|
|
}
|
|
nla_nest_end(skb, actions_attr);
|
|
|
|
nla_nest_end(skb, entry_attr);
|
|
return 0;
|
|
|
|
nla_put_failure:
|
|
err = -EMSGSIZE;
|
|
err_match_values_put:
|
|
err_action_values_put:
|
|
nla_nest_cancel(skb, entry_attr);
|
|
return err;
|
|
}
|
|
|
|
static struct devlink_dpipe_table *
|
|
devlink_dpipe_table_find(struct list_head *dpipe_tables,
|
|
const char *table_name, struct devlink *devlink)
|
|
{
|
|
struct devlink_dpipe_table *table;
|
|
list_for_each_entry_rcu(table, dpipe_tables, list,
|
|
lockdep_is_held(&devlink->lock)) {
|
|
if (!strcmp(table->name, table_name))
|
|
return table;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
int devlink_dpipe_entry_ctx_prepare(struct devlink_dpipe_dump_ctx *dump_ctx)
|
|
{
|
|
struct devlink *devlink;
|
|
int err;
|
|
|
|
err = devlink_dpipe_send_and_alloc_skb(&dump_ctx->skb,
|
|
dump_ctx->info);
|
|
if (err)
|
|
return err;
|
|
|
|
dump_ctx->hdr = genlmsg_put(dump_ctx->skb,
|
|
dump_ctx->info->snd_portid,
|
|
dump_ctx->info->snd_seq,
|
|
&devlink_nl_family, NLM_F_MULTI,
|
|
dump_ctx->cmd);
|
|
if (!dump_ctx->hdr)
|
|
goto nla_put_failure;
|
|
|
|
devlink = dump_ctx->info->user_ptr[0];
|
|
if (devlink_nl_put_handle(dump_ctx->skb, devlink))
|
|
goto nla_put_failure;
|
|
dump_ctx->nest = nla_nest_start_noflag(dump_ctx->skb,
|
|
DEVLINK_ATTR_DPIPE_ENTRIES);
|
|
if (!dump_ctx->nest)
|
|
goto nla_put_failure;
|
|
return 0;
|
|
|
|
nla_put_failure:
|
|
nlmsg_free(dump_ctx->skb);
|
|
return -EMSGSIZE;
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_dpipe_entry_ctx_prepare);
|
|
|
|
int devlink_dpipe_entry_ctx_append(struct devlink_dpipe_dump_ctx *dump_ctx,
|
|
struct devlink_dpipe_entry *entry)
|
|
{
|
|
return devlink_dpipe_entry_put(dump_ctx->skb, entry);
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_dpipe_entry_ctx_append);
|
|
|
|
int devlink_dpipe_entry_ctx_close(struct devlink_dpipe_dump_ctx *dump_ctx)
|
|
{
|
|
nla_nest_end(dump_ctx->skb, dump_ctx->nest);
|
|
genlmsg_end(dump_ctx->skb, dump_ctx->hdr);
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_dpipe_entry_ctx_close);
|
|
|
|
void devlink_dpipe_entry_clear(struct devlink_dpipe_entry *entry)
|
|
|
|
{
|
|
unsigned int value_count, value_index;
|
|
struct devlink_dpipe_value *value;
|
|
|
|
value = entry->action_values;
|
|
value_count = entry->action_values_count;
|
|
for (value_index = 0; value_index < value_count; value_index++) {
|
|
kfree(value[value_index].value);
|
|
kfree(value[value_index].mask);
|
|
}
|
|
|
|
value = entry->match_values;
|
|
value_count = entry->match_values_count;
|
|
for (value_index = 0; value_index < value_count; value_index++) {
|
|
kfree(value[value_index].value);
|
|
kfree(value[value_index].mask);
|
|
}
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_dpipe_entry_clear);
|
|
|
|
static int devlink_dpipe_entries_fill(struct genl_info *info,
|
|
enum devlink_command cmd, int flags,
|
|
struct devlink_dpipe_table *table)
|
|
{
|
|
struct devlink_dpipe_dump_ctx dump_ctx;
|
|
struct nlmsghdr *nlh;
|
|
int err;
|
|
|
|
dump_ctx.skb = NULL;
|
|
dump_ctx.cmd = cmd;
|
|
dump_ctx.info = info;
|
|
|
|
err = table->table_ops->entries_dump(table->priv,
|
|
table->counters_enabled,
|
|
&dump_ctx);
|
|
if (err)
|
|
return err;
|
|
|
|
send_done:
|
|
nlh = nlmsg_put(dump_ctx.skb, info->snd_portid, info->snd_seq,
|
|
NLMSG_DONE, 0, flags | NLM_F_MULTI);
|
|
if (!nlh) {
|
|
err = devlink_dpipe_send_and_alloc_skb(&dump_ctx.skb, info);
|
|
if (err)
|
|
return err;
|
|
goto send_done;
|
|
}
|
|
return genlmsg_reply(dump_ctx.skb, info);
|
|
}
|
|
|
|
static int devlink_nl_cmd_dpipe_entries_get(struct sk_buff *skb,
|
|
struct genl_info *info)
|
|
{
|
|
struct devlink *devlink = info->user_ptr[0];
|
|
struct devlink_dpipe_table *table;
|
|
const char *table_name;
|
|
|
|
if (!info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME])
|
|
return -EINVAL;
|
|
|
|
table_name = nla_data(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME]);
|
|
table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
|
|
table_name, devlink);
|
|
if (!table)
|
|
return -EINVAL;
|
|
|
|
if (!table->table_ops->entries_dump)
|
|
return -EINVAL;
|
|
|
|
return devlink_dpipe_entries_fill(info, DEVLINK_CMD_DPIPE_ENTRIES_GET,
|
|
0, table);
|
|
}
|
|
|
|
static int devlink_dpipe_fields_put(struct sk_buff *skb,
|
|
const struct devlink_dpipe_header *header)
|
|
{
|
|
struct devlink_dpipe_field *field;
|
|
struct nlattr *field_attr;
|
|
int i;
|
|
|
|
for (i = 0; i < header->fields_count; i++) {
|
|
field = &header->fields[i];
|
|
field_attr = nla_nest_start_noflag(skb,
|
|
DEVLINK_ATTR_DPIPE_FIELD);
|
|
if (!field_attr)
|
|
return -EMSGSIZE;
|
|
if (nla_put_string(skb, DEVLINK_ATTR_DPIPE_FIELD_NAME, field->name) ||
|
|
nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_ID, field->id) ||
|
|
nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_BITWIDTH, field->bitwidth) ||
|
|
nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_MAPPING_TYPE, field->mapping_type))
|
|
goto nla_put_failure;
|
|
nla_nest_end(skb, field_attr);
|
|
}
|
|
return 0;
|
|
|
|
nla_put_failure:
|
|
nla_nest_cancel(skb, field_attr);
|
|
return -EMSGSIZE;
|
|
}
|
|
|
|
static int devlink_dpipe_header_put(struct sk_buff *skb,
|
|
struct devlink_dpipe_header *header)
|
|
{
|
|
struct nlattr *fields_attr, *header_attr;
|
|
int err;
|
|
|
|
header_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_HEADER);
|
|
if (!header_attr)
|
|
return -EMSGSIZE;
|
|
|
|
if (nla_put_string(skb, DEVLINK_ATTR_DPIPE_HEADER_NAME, header->name) ||
|
|
nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_ID, header->id) ||
|
|
nla_put_u8(skb, DEVLINK_ATTR_DPIPE_HEADER_GLOBAL, header->global))
|
|
goto nla_put_failure;
|
|
|
|
fields_attr = nla_nest_start_noflag(skb,
|
|
DEVLINK_ATTR_DPIPE_HEADER_FIELDS);
|
|
if (!fields_attr)
|
|
goto nla_put_failure;
|
|
|
|
err = devlink_dpipe_fields_put(skb, header);
|
|
if (err) {
|
|
nla_nest_cancel(skb, fields_attr);
|
|
goto nla_put_failure;
|
|
}
|
|
nla_nest_end(skb, fields_attr);
|
|
nla_nest_end(skb, header_attr);
|
|
return 0;
|
|
|
|
nla_put_failure:
|
|
err = -EMSGSIZE;
|
|
nla_nest_cancel(skb, header_attr);
|
|
return err;
|
|
}
|
|
|
|
static int devlink_dpipe_headers_fill(struct genl_info *info,
|
|
enum devlink_command cmd, int flags,
|
|
struct devlink_dpipe_headers *
|
|
dpipe_headers)
|
|
{
|
|
struct devlink *devlink = info->user_ptr[0];
|
|
struct nlattr *headers_attr;
|
|
struct sk_buff *skb = NULL;
|
|
struct nlmsghdr *nlh;
|
|
void *hdr;
|
|
int i, j;
|
|
int err;
|
|
|
|
i = 0;
|
|
start_again:
|
|
err = devlink_dpipe_send_and_alloc_skb(&skb, info);
|
|
if (err)
|
|
return err;
|
|
|
|
hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq,
|
|
&devlink_nl_family, NLM_F_MULTI, cmd);
|
|
if (!hdr) {
|
|
nlmsg_free(skb);
|
|
return -EMSGSIZE;
|
|
}
|
|
|
|
if (devlink_nl_put_handle(skb, devlink))
|
|
goto nla_put_failure;
|
|
headers_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_HEADERS);
|
|
if (!headers_attr)
|
|
goto nla_put_failure;
|
|
|
|
j = 0;
|
|
for (; i < dpipe_headers->headers_count; i++) {
|
|
err = devlink_dpipe_header_put(skb, dpipe_headers->headers[i]);
|
|
if (err) {
|
|
if (!j)
|
|
goto err_table_put;
|
|
break;
|
|
}
|
|
j++;
|
|
}
|
|
nla_nest_end(skb, headers_attr);
|
|
genlmsg_end(skb, hdr);
|
|
if (i != dpipe_headers->headers_count)
|
|
goto start_again;
|
|
|
|
send_done:
|
|
nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq,
|
|
NLMSG_DONE, 0, flags | NLM_F_MULTI);
|
|
if (!nlh) {
|
|
err = devlink_dpipe_send_and_alloc_skb(&skb, info);
|
|
if (err)
|
|
return err;
|
|
goto send_done;
|
|
}
|
|
return genlmsg_reply(skb, info);
|
|
|
|
nla_put_failure:
|
|
err = -EMSGSIZE;
|
|
err_table_put:
|
|
nlmsg_free(skb);
|
|
return err;
|
|
}
|
|
|
|
static int devlink_nl_cmd_dpipe_headers_get(struct sk_buff *skb,
|
|
struct genl_info *info)
|
|
{
|
|
struct devlink *devlink = info->user_ptr[0];
|
|
|
|
if (!devlink->dpipe_headers)
|
|
return -EOPNOTSUPP;
|
|
return devlink_dpipe_headers_fill(info, DEVLINK_CMD_DPIPE_HEADERS_GET,
|
|
0, devlink->dpipe_headers);
|
|
}
|
|
|
|
static int devlink_dpipe_table_counters_set(struct devlink *devlink,
|
|
const char *table_name,
|
|
bool enable)
|
|
{
|
|
struct devlink_dpipe_table *table;
|
|
|
|
table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
|
|
table_name, devlink);
|
|
if (!table)
|
|
return -EINVAL;
|
|
|
|
if (table->counter_control_extern)
|
|
return -EOPNOTSUPP;
|
|
|
|
if (!(table->counters_enabled ^ enable))
|
|
return 0;
|
|
|
|
table->counters_enabled = enable;
|
|
if (table->table_ops->counters_set_update)
|
|
table->table_ops->counters_set_update(table->priv, enable);
|
|
return 0;
|
|
}
|
|
|
|
static int devlink_nl_cmd_dpipe_table_counters_set(struct sk_buff *skb,
|
|
struct genl_info *info)
|
|
{
|
|
struct devlink *devlink = info->user_ptr[0];
|
|
const char *table_name;
|
|
bool counters_enable;
|
|
|
|
if (!info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME] ||
|
|
!info->attrs[DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED])
|
|
return -EINVAL;
|
|
|
|
table_name = nla_data(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME]);
|
|
counters_enable = !!nla_get_u8(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED]);
|
|
|
|
return devlink_dpipe_table_counters_set(devlink, table_name,
|
|
counters_enable);
|
|
}
|
|
|
|
static struct devlink_resource *
|
|
devlink_resource_find(struct devlink *devlink,
|
|
struct devlink_resource *resource, u64 resource_id)
|
|
{
|
|
struct list_head *resource_list;
|
|
|
|
if (resource)
|
|
resource_list = &resource->resource_list;
|
|
else
|
|
resource_list = &devlink->resource_list;
|
|
|
|
list_for_each_entry(resource, resource_list, list) {
|
|
struct devlink_resource *child_resource;
|
|
|
|
if (resource->id == resource_id)
|
|
return resource;
|
|
|
|
child_resource = devlink_resource_find(devlink, resource,
|
|
resource_id);
|
|
if (child_resource)
|
|
return child_resource;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
static void
|
|
devlink_resource_validate_children(struct devlink_resource *resource)
|
|
{
|
|
struct devlink_resource *child_resource;
|
|
bool size_valid = true;
|
|
u64 parts_size = 0;
|
|
|
|
if (list_empty(&resource->resource_list))
|
|
goto out;
|
|
|
|
list_for_each_entry(child_resource, &resource->resource_list, list)
|
|
parts_size += child_resource->size_new;
|
|
|
|
if (parts_size > resource->size_new)
|
|
size_valid = false;
|
|
out:
|
|
resource->size_valid = size_valid;
|
|
}
|
|
|
|
static int
|
|
devlink_resource_validate_size(struct devlink_resource *resource, u64 size,
|
|
struct netlink_ext_ack *extack)
|
|
{
|
|
u64 reminder;
|
|
int err = 0;
|
|
|
|
if (size > resource->size_params.size_max) {
|
|
NL_SET_ERR_MSG_MOD(extack, "Size larger than maximum");
|
|
err = -EINVAL;
|
|
}
|
|
|
|
if (size < resource->size_params.size_min) {
|
|
NL_SET_ERR_MSG_MOD(extack, "Size smaller than minimum");
|
|
err = -EINVAL;
|
|
}
|
|
|
|
div64_u64_rem(size, resource->size_params.size_granularity, &reminder);
|
|
if (reminder) {
|
|
NL_SET_ERR_MSG_MOD(extack, "Wrong granularity");
|
|
err = -EINVAL;
|
|
}
|
|
|
|
return err;
|
|
}
|
|
|
|
static int devlink_nl_cmd_resource_set(struct sk_buff *skb,
|
|
struct genl_info *info)
|
|
{
|
|
struct devlink *devlink = info->user_ptr[0];
|
|
struct devlink_resource *resource;
|
|
u64 resource_id;
|
|
u64 size;
|
|
int err;
|
|
|
|
if (!info->attrs[DEVLINK_ATTR_RESOURCE_ID] ||
|
|
!info->attrs[DEVLINK_ATTR_RESOURCE_SIZE])
|
|
return -EINVAL;
|
|
resource_id = nla_get_u64(info->attrs[DEVLINK_ATTR_RESOURCE_ID]);
|
|
|
|
resource = devlink_resource_find(devlink, NULL, resource_id);
|
|
if (!resource)
|
|
return -EINVAL;
|
|
|
|
size = nla_get_u64(info->attrs[DEVLINK_ATTR_RESOURCE_SIZE]);
|
|
err = devlink_resource_validate_size(resource, size, info->extack);
|
|
if (err)
|
|
return err;
|
|
|
|
resource->size_new = size;
|
|
devlink_resource_validate_children(resource);
|
|
if (resource->parent)
|
|
devlink_resource_validate_children(resource->parent);
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
devlink_resource_size_params_put(struct devlink_resource *resource,
|
|
struct sk_buff *skb)
|
|
{
|
|
struct devlink_resource_size_params *size_params;
|
|
|
|
size_params = &resource->size_params;
|
|
if (nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_GRAN,
|
|
size_params->size_granularity, DEVLINK_ATTR_PAD) ||
|
|
nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_MAX,
|
|
size_params->size_max, DEVLINK_ATTR_PAD) ||
|
|
nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_MIN,
|
|
size_params->size_min, DEVLINK_ATTR_PAD) ||
|
|
nla_put_u8(skb, DEVLINK_ATTR_RESOURCE_UNIT, size_params->unit))
|
|
return -EMSGSIZE;
|
|
return 0;
|
|
}
|
|
|
|
static int devlink_resource_occ_put(struct devlink_resource *resource,
|
|
struct sk_buff *skb)
|
|
{
|
|
if (!resource->occ_get)
|
|
return 0;
|
|
return nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_OCC,
|
|
resource->occ_get(resource->occ_get_priv),
|
|
DEVLINK_ATTR_PAD);
|
|
}
|
|
|
|
static int devlink_resource_put(struct devlink *devlink, struct sk_buff *skb,
|
|
struct devlink_resource *resource)
|
|
{
|
|
struct devlink_resource *child_resource;
|
|
struct nlattr *child_resource_attr;
|
|
struct nlattr *resource_attr;
|
|
|
|
resource_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_RESOURCE);
|
|
if (!resource_attr)
|
|
return -EMSGSIZE;
|
|
|
|
if (nla_put_string(skb, DEVLINK_ATTR_RESOURCE_NAME, resource->name) ||
|
|
nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE, resource->size,
|
|
DEVLINK_ATTR_PAD) ||
|
|
nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_ID, resource->id,
|
|
DEVLINK_ATTR_PAD))
|
|
goto nla_put_failure;
|
|
if (resource->size != resource->size_new)
|
|
nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_NEW,
|
|
resource->size_new, DEVLINK_ATTR_PAD);
|
|
if (devlink_resource_occ_put(resource, skb))
|
|
goto nla_put_failure;
|
|
if (devlink_resource_size_params_put(resource, skb))
|
|
goto nla_put_failure;
|
|
if (list_empty(&resource->resource_list))
|
|
goto out;
|
|
|
|
if (nla_put_u8(skb, DEVLINK_ATTR_RESOURCE_SIZE_VALID,
|
|
resource->size_valid))
|
|
goto nla_put_failure;
|
|
|
|
child_resource_attr = nla_nest_start_noflag(skb,
|
|
DEVLINK_ATTR_RESOURCE_LIST);
|
|
if (!child_resource_attr)
|
|
goto nla_put_failure;
|
|
|
|
list_for_each_entry(child_resource, &resource->resource_list, list) {
|
|
if (devlink_resource_put(devlink, skb, child_resource))
|
|
goto resource_put_failure;
|
|
}
|
|
|
|
nla_nest_end(skb, child_resource_attr);
|
|
out:
|
|
nla_nest_end(skb, resource_attr);
|
|
return 0;
|
|
|
|
resource_put_failure:
|
|
nla_nest_cancel(skb, child_resource_attr);
|
|
nla_put_failure:
|
|
nla_nest_cancel(skb, resource_attr);
|
|
return -EMSGSIZE;
|
|
}
|
|
|
|
static int devlink_resource_fill(struct genl_info *info,
|
|
enum devlink_command cmd, int flags)
|
|
{
|
|
struct devlink *devlink = info->user_ptr[0];
|
|
struct devlink_resource *resource;
|
|
struct nlattr *resources_attr;
|
|
struct sk_buff *skb = NULL;
|
|
struct nlmsghdr *nlh;
|
|
bool incomplete;
|
|
void *hdr;
|
|
int i;
|
|
int err;
|
|
|
|
resource = list_first_entry(&devlink->resource_list,
|
|
struct devlink_resource, list);
|
|
start_again:
|
|
err = devlink_dpipe_send_and_alloc_skb(&skb, info);
|
|
if (err)
|
|
return err;
|
|
|
|
hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq,
|
|
&devlink_nl_family, NLM_F_MULTI, cmd);
|
|
if (!hdr) {
|
|
nlmsg_free(skb);
|
|
return -EMSGSIZE;
|
|
}
|
|
|
|
if (devlink_nl_put_handle(skb, devlink))
|
|
goto nla_put_failure;
|
|
|
|
resources_attr = nla_nest_start_noflag(skb,
|
|
DEVLINK_ATTR_RESOURCE_LIST);
|
|
if (!resources_attr)
|
|
goto nla_put_failure;
|
|
|
|
incomplete = false;
|
|
i = 0;
|
|
list_for_each_entry_from(resource, &devlink->resource_list, list) {
|
|
err = devlink_resource_put(devlink, skb, resource);
|
|
if (err) {
|
|
if (!i)
|
|
goto err_resource_put;
|
|
incomplete = true;
|
|
break;
|
|
}
|
|
i++;
|
|
}
|
|
nla_nest_end(skb, resources_attr);
|
|
genlmsg_end(skb, hdr);
|
|
if (incomplete)
|
|
goto start_again;
|
|
send_done:
|
|
nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq,
|
|
NLMSG_DONE, 0, flags | NLM_F_MULTI);
|
|
if (!nlh) {
|
|
err = devlink_dpipe_send_and_alloc_skb(&skb, info);
|
|
if (err)
|
|
return err;
|
|
goto send_done;
|
|
}
|
|
return genlmsg_reply(skb, info);
|
|
|
|
nla_put_failure:
|
|
err = -EMSGSIZE;
|
|
err_resource_put:
|
|
nlmsg_free(skb);
|
|
return err;
|
|
}
|
|
|
|
static int devlink_nl_cmd_resource_dump(struct sk_buff *skb,
|
|
struct genl_info *info)
|
|
{
|
|
struct devlink *devlink = info->user_ptr[0];
|
|
|
|
if (list_empty(&devlink->resource_list))
|
|
return -EOPNOTSUPP;
|
|
|
|
return devlink_resource_fill(info, DEVLINK_CMD_RESOURCE_DUMP, 0);
|
|
}
|
|
|
|
static int
|
|
devlink_resources_validate(struct devlink *devlink,
|
|
struct devlink_resource *resource,
|
|
struct genl_info *info)
|
|
{
|
|
struct list_head *resource_list;
|
|
int err = 0;
|
|
|
|
if (resource)
|
|
resource_list = &resource->resource_list;
|
|
else
|
|
resource_list = &devlink->resource_list;
|
|
|
|
list_for_each_entry(resource, resource_list, list) {
|
|
if (!resource->size_valid)
|
|
return -EINVAL;
|
|
err = devlink_resources_validate(devlink, resource, info);
|
|
if (err)
|
|
return err;
|
|
}
|
|
return err;
|
|
}
|
|
|
|
static struct net *devlink_netns_get(struct sk_buff *skb,
|
|
struct genl_info *info)
|
|
{
|
|
struct nlattr *netns_pid_attr = info->attrs[DEVLINK_ATTR_NETNS_PID];
|
|
struct nlattr *netns_fd_attr = info->attrs[DEVLINK_ATTR_NETNS_FD];
|
|
struct nlattr *netns_id_attr = info->attrs[DEVLINK_ATTR_NETNS_ID];
|
|
struct net *net;
|
|
|
|
if (!!netns_pid_attr + !!netns_fd_attr + !!netns_id_attr > 1) {
|
|
NL_SET_ERR_MSG_MOD(info->extack, "multiple netns identifying attributes specified");
|
|
return ERR_PTR(-EINVAL);
|
|
}
|
|
|
|
if (netns_pid_attr) {
|
|
net = get_net_ns_by_pid(nla_get_u32(netns_pid_attr));
|
|
} else if (netns_fd_attr) {
|
|
net = get_net_ns_by_fd(nla_get_u32(netns_fd_attr));
|
|
} else if (netns_id_attr) {
|
|
net = get_net_ns_by_id(sock_net(skb->sk),
|
|
nla_get_u32(netns_id_attr));
|
|
if (!net)
|
|
net = ERR_PTR(-EINVAL);
|
|
} else {
|
|
WARN_ON(1);
|
|
net = ERR_PTR(-EINVAL);
|
|
}
|
|
if (IS_ERR(net)) {
|
|
NL_SET_ERR_MSG_MOD(info->extack, "Unknown network namespace");
|
|
return ERR_PTR(-EINVAL);
|
|
}
|
|
if (!netlink_ns_capable(skb, net->user_ns, CAP_NET_ADMIN)) {
|
|
put_net(net);
|
|
return ERR_PTR(-EPERM);
|
|
}
|
|
return net;
|
|
}
|
|
|
|
static void devlink_param_notify(struct devlink *devlink,
|
|
unsigned int port_index,
|
|
struct devlink_param_item *param_item,
|
|
enum devlink_command cmd);
|
|
|
|
static void devlink_ns_change_notify(struct devlink *devlink,
|
|
struct net *dest_net, struct net *curr_net,
|
|
bool new)
|
|
{
|
|
struct devlink_param_item *param_item;
|
|
enum devlink_command cmd;
|
|
|
|
/* Userspace needs to be notified about devlink objects
|
|
* removed from original and entering new network namespace.
|
|
* The rest of the devlink objects are re-created during
|
|
* reload process so the notifications are generated separatelly.
|
|
*/
|
|
|
|
if (!dest_net || net_eq(dest_net, curr_net))
|
|
return;
|
|
|
|
if (new)
|
|
devlink_notify(devlink, DEVLINK_CMD_NEW);
|
|
|
|
cmd = new ? DEVLINK_CMD_PARAM_NEW : DEVLINK_CMD_PARAM_DEL;
|
|
list_for_each_entry(param_item, &devlink->param_list, list)
|
|
devlink_param_notify(devlink, 0, param_item, cmd);
|
|
|
|
if (!new)
|
|
devlink_notify(devlink, DEVLINK_CMD_DEL);
|
|
}
|
|
|
|
static bool devlink_reload_supported(const struct devlink_ops *ops)
|
|
{
|
|
return ops->reload_down && ops->reload_up;
|
|
}
|
|
|
|
static void devlink_reload_failed_set(struct devlink *devlink,
|
|
bool reload_failed)
|
|
{
|
|
if (devlink->reload_failed == reload_failed)
|
|
return;
|
|
devlink->reload_failed = reload_failed;
|
|
devlink_notify(devlink, DEVLINK_CMD_NEW);
|
|
}
|
|
|
|
bool devlink_is_reload_failed(const struct devlink *devlink)
|
|
{
|
|
return devlink->reload_failed;
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_is_reload_failed);
|
|
|
|
static void
|
|
__devlink_reload_stats_update(struct devlink *devlink, u32 *reload_stats,
|
|
enum devlink_reload_limit limit, u32 actions_performed)
|
|
{
|
|
unsigned long actions = actions_performed;
|
|
int stat_idx;
|
|
int action;
|
|
|
|
for_each_set_bit(action, &actions, __DEVLINK_RELOAD_ACTION_MAX) {
|
|
stat_idx = limit * __DEVLINK_RELOAD_ACTION_MAX + action;
|
|
reload_stats[stat_idx]++;
|
|
}
|
|
devlink_notify(devlink, DEVLINK_CMD_NEW);
|
|
}
|
|
|
|
static void
|
|
devlink_reload_stats_update(struct devlink *devlink, enum devlink_reload_limit limit,
|
|
u32 actions_performed)
|
|
{
|
|
__devlink_reload_stats_update(devlink, devlink->stats.reload_stats, limit,
|
|
actions_performed);
|
|
}
|
|
|
|
/**
|
|
* devlink_remote_reload_actions_performed - Update devlink on reload actions
|
|
* performed which are not a direct result of devlink reload call.
|
|
*
|
|
* This should be called by a driver after performing reload actions in case it was not
|
|
* a result of devlink reload call. For example fw_activate was performed as a result
|
|
* of devlink reload triggered fw_activate on another host.
|
|
* The motivation for this function is to keep data on reload actions performed on this
|
|
* function whether it was done due to direct devlink reload call or not.
|
|
*
|
|
* @devlink: devlink
|
|
* @limit: reload limit
|
|
* @actions_performed: bitmask of actions performed
|
|
*/
|
|
void devlink_remote_reload_actions_performed(struct devlink *devlink,
|
|
enum devlink_reload_limit limit,
|
|
u32 actions_performed)
|
|
{
|
|
if (WARN_ON(!actions_performed ||
|
|
actions_performed & BIT(DEVLINK_RELOAD_ACTION_UNSPEC) ||
|
|
actions_performed >= BIT(__DEVLINK_RELOAD_ACTION_MAX) ||
|
|
limit > DEVLINK_RELOAD_LIMIT_MAX))
|
|
return;
|
|
|
|
__devlink_reload_stats_update(devlink, devlink->stats.remote_reload_stats, limit,
|
|
actions_performed);
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_remote_reload_actions_performed);
|
|
|
|
static int devlink_reload(struct devlink *devlink, struct net *dest_net,
|
|
enum devlink_reload_action action, enum devlink_reload_limit limit,
|
|
u32 *actions_performed, struct netlink_ext_ack *extack)
|
|
{
|
|
u32 remote_reload_stats[DEVLINK_RELOAD_STATS_ARRAY_SIZE];
|
|
struct net *curr_net;
|
|
int err;
|
|
|
|
memcpy(remote_reload_stats, devlink->stats.remote_reload_stats,
|
|
sizeof(remote_reload_stats));
|
|
|
|
curr_net = devlink_net(devlink);
|
|
devlink_ns_change_notify(devlink, dest_net, curr_net, false);
|
|
err = devlink->ops->reload_down(devlink, !!dest_net, action, limit, extack);
|
|
if (err)
|
|
return err;
|
|
|
|
if (dest_net && !net_eq(dest_net, curr_net))
|
|
write_pnet(&devlink->_net, dest_net);
|
|
|
|
err = devlink->ops->reload_up(devlink, action, limit, actions_performed, extack);
|
|
devlink_reload_failed_set(devlink, !!err);
|
|
if (err)
|
|
return err;
|
|
|
|
devlink_ns_change_notify(devlink, dest_net, curr_net, true);
|
|
WARN_ON(!(*actions_performed & BIT(action)));
|
|
/* Catch driver on updating the remote action within devlink reload */
|
|
WARN_ON(memcmp(remote_reload_stats, devlink->stats.remote_reload_stats,
|
|
sizeof(remote_reload_stats)));
|
|
devlink_reload_stats_update(devlink, limit, *actions_performed);
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
devlink_nl_reload_actions_performed_snd(struct devlink *devlink, u32 actions_performed,
|
|
enum devlink_command cmd, struct genl_info *info)
|
|
{
|
|
struct sk_buff *msg;
|
|
void *hdr;
|
|
|
|
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
|
|
if (!msg)
|
|
return -ENOMEM;
|
|
|
|
hdr = genlmsg_put(msg, info->snd_portid, info->snd_seq, &devlink_nl_family, 0, cmd);
|
|
if (!hdr)
|
|
goto free_msg;
|
|
|
|
if (devlink_nl_put_handle(msg, devlink))
|
|
goto nla_put_failure;
|
|
|
|
if (nla_put_bitfield32(msg, DEVLINK_ATTR_RELOAD_ACTIONS_PERFORMED, actions_performed,
|
|
actions_performed))
|
|
goto nla_put_failure;
|
|
genlmsg_end(msg, hdr);
|
|
|
|
return genlmsg_reply(msg, info);
|
|
|
|
nla_put_failure:
|
|
genlmsg_cancel(msg, hdr);
|
|
free_msg:
|
|
nlmsg_free(msg);
|
|
return -EMSGSIZE;
|
|
}
|
|
|
|
static int devlink_nl_cmd_reload(struct sk_buff *skb, struct genl_info *info)
|
|
{
|
|
struct devlink *devlink = info->user_ptr[0];
|
|
enum devlink_reload_action action;
|
|
enum devlink_reload_limit limit;
|
|
struct net *dest_net = NULL;
|
|
u32 actions_performed;
|
|
int err;
|
|
|
|
if (!(devlink->features & DEVLINK_F_RELOAD))
|
|
return -EOPNOTSUPP;
|
|
|
|
err = devlink_resources_validate(devlink, NULL, info);
|
|
if (err) {
|
|
NL_SET_ERR_MSG_MOD(info->extack, "resources size validation failed");
|
|
return err;
|
|
}
|
|
|
|
if (info->attrs[DEVLINK_ATTR_RELOAD_ACTION])
|
|
action = nla_get_u8(info->attrs[DEVLINK_ATTR_RELOAD_ACTION]);
|
|
else
|
|
action = DEVLINK_RELOAD_ACTION_DRIVER_REINIT;
|
|
|
|
if (!devlink_reload_action_is_supported(devlink, action)) {
|
|
NL_SET_ERR_MSG_MOD(info->extack,
|
|
"Requested reload action is not supported by the driver");
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
limit = DEVLINK_RELOAD_LIMIT_UNSPEC;
|
|
if (info->attrs[DEVLINK_ATTR_RELOAD_LIMITS]) {
|
|
struct nla_bitfield32 limits;
|
|
u32 limits_selected;
|
|
|
|
limits = nla_get_bitfield32(info->attrs[DEVLINK_ATTR_RELOAD_LIMITS]);
|
|
limits_selected = limits.value & limits.selector;
|
|
if (!limits_selected) {
|
|
NL_SET_ERR_MSG_MOD(info->extack, "Invalid limit selected");
|
|
return -EINVAL;
|
|
}
|
|
for (limit = 0 ; limit <= DEVLINK_RELOAD_LIMIT_MAX ; limit++)
|
|
if (limits_selected & BIT(limit))
|
|
break;
|
|
/* UAPI enables multiselection, but currently it is not used */
|
|
if (limits_selected != BIT(limit)) {
|
|
NL_SET_ERR_MSG_MOD(info->extack,
|
|
"Multiselection of limit is not supported");
|
|
return -EOPNOTSUPP;
|
|
}
|
|
if (!devlink_reload_limit_is_supported(devlink, limit)) {
|
|
NL_SET_ERR_MSG_MOD(info->extack,
|
|
"Requested limit is not supported by the driver");
|
|
return -EOPNOTSUPP;
|
|
}
|
|
if (devlink_reload_combination_is_invalid(action, limit)) {
|
|
NL_SET_ERR_MSG_MOD(info->extack,
|
|
"Requested limit is invalid for this action");
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
if (info->attrs[DEVLINK_ATTR_NETNS_PID] ||
|
|
info->attrs[DEVLINK_ATTR_NETNS_FD] ||
|
|
info->attrs[DEVLINK_ATTR_NETNS_ID]) {
|
|
dest_net = devlink_netns_get(skb, info);
|
|
if (IS_ERR(dest_net))
|
|
return PTR_ERR(dest_net);
|
|
}
|
|
|
|
err = devlink_reload(devlink, dest_net, action, limit, &actions_performed, info->extack);
|
|
|
|
if (dest_net)
|
|
put_net(dest_net);
|
|
|
|
if (err)
|
|
return err;
|
|
/* For backward compatibility generate reply only if attributes used by user */
|
|
if (!info->attrs[DEVLINK_ATTR_RELOAD_ACTION] && !info->attrs[DEVLINK_ATTR_RELOAD_LIMITS])
|
|
return 0;
|
|
|
|
return devlink_nl_reload_actions_performed_snd(devlink, actions_performed,
|
|
DEVLINK_CMD_RELOAD, info);
|
|
}
|
|
|
|
static int devlink_nl_flash_update_fill(struct sk_buff *msg,
|
|
struct devlink *devlink,
|
|
enum devlink_command cmd,
|
|
struct devlink_flash_notify *params)
|
|
{
|
|
void *hdr;
|
|
|
|
hdr = genlmsg_put(msg, 0, 0, &devlink_nl_family, 0, cmd);
|
|
if (!hdr)
|
|
return -EMSGSIZE;
|
|
|
|
if (devlink_nl_put_handle(msg, devlink))
|
|
goto nla_put_failure;
|
|
|
|
if (cmd != DEVLINK_CMD_FLASH_UPDATE_STATUS)
|
|
goto out;
|
|
|
|
if (params->status_msg &&
|
|
nla_put_string(msg, DEVLINK_ATTR_FLASH_UPDATE_STATUS_MSG,
|
|
params->status_msg))
|
|
goto nla_put_failure;
|
|
if (params->component &&
|
|
nla_put_string(msg, DEVLINK_ATTR_FLASH_UPDATE_COMPONENT,
|
|
params->component))
|
|
goto nla_put_failure;
|
|
if (nla_put_u64_64bit(msg, DEVLINK_ATTR_FLASH_UPDATE_STATUS_DONE,
|
|
params->done, DEVLINK_ATTR_PAD))
|
|
goto nla_put_failure;
|
|
if (nla_put_u64_64bit(msg, DEVLINK_ATTR_FLASH_UPDATE_STATUS_TOTAL,
|
|
params->total, DEVLINK_ATTR_PAD))
|
|
goto nla_put_failure;
|
|
if (nla_put_u64_64bit(msg, DEVLINK_ATTR_FLASH_UPDATE_STATUS_TIMEOUT,
|
|
params->timeout, DEVLINK_ATTR_PAD))
|
|
goto nla_put_failure;
|
|
|
|
out:
|
|
genlmsg_end(msg, hdr);
|
|
return 0;
|
|
|
|
nla_put_failure:
|
|
genlmsg_cancel(msg, hdr);
|
|
return -EMSGSIZE;
|
|
}
|
|
|
|
static void __devlink_flash_update_notify(struct devlink *devlink,
|
|
enum devlink_command cmd,
|
|
struct devlink_flash_notify *params)
|
|
{
|
|
struct sk_buff *msg;
|
|
int err;
|
|
|
|
WARN_ON(cmd != DEVLINK_CMD_FLASH_UPDATE &&
|
|
cmd != DEVLINK_CMD_FLASH_UPDATE_END &&
|
|
cmd != DEVLINK_CMD_FLASH_UPDATE_STATUS);
|
|
|
|
if (!xa_get_mark(&devlinks, devlink->index, DEVLINK_REGISTERED))
|
|
return;
|
|
|
|
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
|
|
if (!msg)
|
|
return;
|
|
|
|
err = devlink_nl_flash_update_fill(msg, devlink, cmd, params);
|
|
if (err)
|
|
goto out_free_msg;
|
|
|
|
genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
|
|
msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
|
|
return;
|
|
|
|
out_free_msg:
|
|
nlmsg_free(msg);
|
|
}
|
|
|
|
static void devlink_flash_update_begin_notify(struct devlink *devlink)
|
|
{
|
|
struct devlink_flash_notify params = {};
|
|
|
|
__devlink_flash_update_notify(devlink,
|
|
DEVLINK_CMD_FLASH_UPDATE,
|
|
¶ms);
|
|
}
|
|
|
|
static void devlink_flash_update_end_notify(struct devlink *devlink)
|
|
{
|
|
struct devlink_flash_notify params = {};
|
|
|
|
__devlink_flash_update_notify(devlink,
|
|
DEVLINK_CMD_FLASH_UPDATE_END,
|
|
¶ms);
|
|
}
|
|
|
|
void devlink_flash_update_status_notify(struct devlink *devlink,
|
|
const char *status_msg,
|
|
const char *component,
|
|
unsigned long done,
|
|
unsigned long total)
|
|
{
|
|
struct devlink_flash_notify params = {
|
|
.status_msg = status_msg,
|
|
.component = component,
|
|
.done = done,
|
|
.total = total,
|
|
};
|
|
|
|
__devlink_flash_update_notify(devlink,
|
|
DEVLINK_CMD_FLASH_UPDATE_STATUS,
|
|
¶ms);
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_flash_update_status_notify);
|
|
|
|
void devlink_flash_update_timeout_notify(struct devlink *devlink,
|
|
const char *status_msg,
|
|
const char *component,
|
|
unsigned long timeout)
|
|
{
|
|
struct devlink_flash_notify params = {
|
|
.status_msg = status_msg,
|
|
.component = component,
|
|
.timeout = timeout,
|
|
};
|
|
|
|
__devlink_flash_update_notify(devlink,
|
|
DEVLINK_CMD_FLASH_UPDATE_STATUS,
|
|
¶ms);
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_flash_update_timeout_notify);
|
|
|
|
static int devlink_nl_cmd_flash_update(struct sk_buff *skb,
|
|
struct genl_info *info)
|
|
{
|
|
struct nlattr *nla_component, *nla_overwrite_mask, *nla_file_name;
|
|
struct devlink_flash_update_params params = {};
|
|
struct devlink *devlink = info->user_ptr[0];
|
|
const char *file_name;
|
|
u32 supported_params;
|
|
int ret;
|
|
|
|
if (!devlink->ops->flash_update)
|
|
return -EOPNOTSUPP;
|
|
|
|
if (!info->attrs[DEVLINK_ATTR_FLASH_UPDATE_FILE_NAME])
|
|
return -EINVAL;
|
|
|
|
supported_params = devlink->ops->supported_flash_update_params;
|
|
|
|
nla_component = info->attrs[DEVLINK_ATTR_FLASH_UPDATE_COMPONENT];
|
|
if (nla_component) {
|
|
if (!(supported_params & DEVLINK_SUPPORT_FLASH_UPDATE_COMPONENT)) {
|
|
NL_SET_ERR_MSG_ATTR(info->extack, nla_component,
|
|
"component update is not supported by this device");
|
|
return -EOPNOTSUPP;
|
|
}
|
|
params.component = nla_data(nla_component);
|
|
}
|
|
|
|
nla_overwrite_mask = info->attrs[DEVLINK_ATTR_FLASH_UPDATE_OVERWRITE_MASK];
|
|
if (nla_overwrite_mask) {
|
|
struct nla_bitfield32 sections;
|
|
|
|
if (!(supported_params & DEVLINK_SUPPORT_FLASH_UPDATE_OVERWRITE_MASK)) {
|
|
NL_SET_ERR_MSG_ATTR(info->extack, nla_overwrite_mask,
|
|
"overwrite settings are not supported by this device");
|
|
return -EOPNOTSUPP;
|
|
}
|
|
sections = nla_get_bitfield32(nla_overwrite_mask);
|
|
params.overwrite_mask = sections.value & sections.selector;
|
|
}
|
|
|
|
nla_file_name = info->attrs[DEVLINK_ATTR_FLASH_UPDATE_FILE_NAME];
|
|
file_name = nla_data(nla_file_name);
|
|
ret = request_firmware(¶ms.fw, file_name, devlink->dev);
|
|
if (ret) {
|
|
NL_SET_ERR_MSG_ATTR(info->extack, nla_file_name, "failed to locate the requested firmware file");
|
|
return ret;
|
|
}
|
|
|
|
devlink_flash_update_begin_notify(devlink);
|
|
ret = devlink->ops->flash_update(devlink, ¶ms, info->extack);
|
|
devlink_flash_update_end_notify(devlink);
|
|
|
|
release_firmware(params.fw);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static const struct devlink_param devlink_param_generic[] = {
|
|
{
|
|
.id = DEVLINK_PARAM_GENERIC_ID_INT_ERR_RESET,
|
|
.name = DEVLINK_PARAM_GENERIC_INT_ERR_RESET_NAME,
|
|
.type = DEVLINK_PARAM_GENERIC_INT_ERR_RESET_TYPE,
|
|
},
|
|
{
|
|
.id = DEVLINK_PARAM_GENERIC_ID_MAX_MACS,
|
|
.name = DEVLINK_PARAM_GENERIC_MAX_MACS_NAME,
|
|
.type = DEVLINK_PARAM_GENERIC_MAX_MACS_TYPE,
|
|
},
|
|
{
|
|
.id = DEVLINK_PARAM_GENERIC_ID_ENABLE_SRIOV,
|
|
.name = DEVLINK_PARAM_GENERIC_ENABLE_SRIOV_NAME,
|
|
.type = DEVLINK_PARAM_GENERIC_ENABLE_SRIOV_TYPE,
|
|
},
|
|
{
|
|
.id = DEVLINK_PARAM_GENERIC_ID_REGION_SNAPSHOT,
|
|
.name = DEVLINK_PARAM_GENERIC_REGION_SNAPSHOT_NAME,
|
|
.type = DEVLINK_PARAM_GENERIC_REGION_SNAPSHOT_TYPE,
|
|
},
|
|
{
|
|
.id = DEVLINK_PARAM_GENERIC_ID_IGNORE_ARI,
|
|
.name = DEVLINK_PARAM_GENERIC_IGNORE_ARI_NAME,
|
|
.type = DEVLINK_PARAM_GENERIC_IGNORE_ARI_TYPE,
|
|
},
|
|
{
|
|
.id = DEVLINK_PARAM_GENERIC_ID_MSIX_VEC_PER_PF_MAX,
|
|
.name = DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MAX_NAME,
|
|
.type = DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MAX_TYPE,
|
|
},
|
|
{
|
|
.id = DEVLINK_PARAM_GENERIC_ID_MSIX_VEC_PER_PF_MIN,
|
|
.name = DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MIN_NAME,
|
|
.type = DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MIN_TYPE,
|
|
},
|
|
{
|
|
.id = DEVLINK_PARAM_GENERIC_ID_FW_LOAD_POLICY,
|
|
.name = DEVLINK_PARAM_GENERIC_FW_LOAD_POLICY_NAME,
|
|
.type = DEVLINK_PARAM_GENERIC_FW_LOAD_POLICY_TYPE,
|
|
},
|
|
{
|
|
.id = DEVLINK_PARAM_GENERIC_ID_RESET_DEV_ON_DRV_PROBE,
|
|
.name = DEVLINK_PARAM_GENERIC_RESET_DEV_ON_DRV_PROBE_NAME,
|
|
.type = DEVLINK_PARAM_GENERIC_RESET_DEV_ON_DRV_PROBE_TYPE,
|
|
},
|
|
{
|
|
.id = DEVLINK_PARAM_GENERIC_ID_ENABLE_ROCE,
|
|
.name = DEVLINK_PARAM_GENERIC_ENABLE_ROCE_NAME,
|
|
.type = DEVLINK_PARAM_GENERIC_ENABLE_ROCE_TYPE,
|
|
},
|
|
{
|
|
.id = DEVLINK_PARAM_GENERIC_ID_ENABLE_REMOTE_DEV_RESET,
|
|
.name = DEVLINK_PARAM_GENERIC_ENABLE_REMOTE_DEV_RESET_NAME,
|
|
.type = DEVLINK_PARAM_GENERIC_ENABLE_REMOTE_DEV_RESET_TYPE,
|
|
},
|
|
{
|
|
.id = DEVLINK_PARAM_GENERIC_ID_ENABLE_ETH,
|
|
.name = DEVLINK_PARAM_GENERIC_ENABLE_ETH_NAME,
|
|
.type = DEVLINK_PARAM_GENERIC_ENABLE_ETH_TYPE,
|
|
},
|
|
{
|
|
.id = DEVLINK_PARAM_GENERIC_ID_ENABLE_RDMA,
|
|
.name = DEVLINK_PARAM_GENERIC_ENABLE_RDMA_NAME,
|
|
.type = DEVLINK_PARAM_GENERIC_ENABLE_RDMA_TYPE,
|
|
},
|
|
{
|
|
.id = DEVLINK_PARAM_GENERIC_ID_ENABLE_VNET,
|
|
.name = DEVLINK_PARAM_GENERIC_ENABLE_VNET_NAME,
|
|
.type = DEVLINK_PARAM_GENERIC_ENABLE_VNET_TYPE,
|
|
},
|
|
{
|
|
.id = DEVLINK_PARAM_GENERIC_ID_ENABLE_IWARP,
|
|
.name = DEVLINK_PARAM_GENERIC_ENABLE_IWARP_NAME,
|
|
.type = DEVLINK_PARAM_GENERIC_ENABLE_IWARP_TYPE,
|
|
},
|
|
{
|
|
.id = DEVLINK_PARAM_GENERIC_ID_IO_EQ_SIZE,
|
|
.name = DEVLINK_PARAM_GENERIC_IO_EQ_SIZE_NAME,
|
|
.type = DEVLINK_PARAM_GENERIC_IO_EQ_SIZE_TYPE,
|
|
},
|
|
{
|
|
.id = DEVLINK_PARAM_GENERIC_ID_EVENT_EQ_SIZE,
|
|
.name = DEVLINK_PARAM_GENERIC_EVENT_EQ_SIZE_NAME,
|
|
.type = DEVLINK_PARAM_GENERIC_EVENT_EQ_SIZE_TYPE,
|
|
},
|
|
};
|
|
|
|
static int devlink_param_generic_verify(const struct devlink_param *param)
|
|
{
|
|
/* verify it match generic parameter by id and name */
|
|
if (param->id > DEVLINK_PARAM_GENERIC_ID_MAX)
|
|
return -EINVAL;
|
|
if (strcmp(param->name, devlink_param_generic[param->id].name))
|
|
return -ENOENT;
|
|
|
|
WARN_ON(param->type != devlink_param_generic[param->id].type);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int devlink_param_driver_verify(const struct devlink_param *param)
|
|
{
|
|
int i;
|
|
|
|
if (param->id <= DEVLINK_PARAM_GENERIC_ID_MAX)
|
|
return -EINVAL;
|
|
/* verify no such name in generic params */
|
|
for (i = 0; i <= DEVLINK_PARAM_GENERIC_ID_MAX; i++)
|
|
if (!strcmp(param->name, devlink_param_generic[i].name))
|
|
return -EEXIST;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct devlink_param_item *
|
|
devlink_param_find_by_name(struct list_head *param_list,
|
|
const char *param_name)
|
|
{
|
|
struct devlink_param_item *param_item;
|
|
|
|
list_for_each_entry(param_item, param_list, list)
|
|
if (!strcmp(param_item->param->name, param_name))
|
|
return param_item;
|
|
return NULL;
|
|
}
|
|
|
|
static struct devlink_param_item *
|
|
devlink_param_find_by_id(struct list_head *param_list, u32 param_id)
|
|
{
|
|
struct devlink_param_item *param_item;
|
|
|
|
list_for_each_entry(param_item, param_list, list)
|
|
if (param_item->param->id == param_id)
|
|
return param_item;
|
|
return NULL;
|
|
}
|
|
|
|
static bool
|
|
devlink_param_cmode_is_supported(const struct devlink_param *param,
|
|
enum devlink_param_cmode cmode)
|
|
{
|
|
return test_bit(cmode, ¶m->supported_cmodes);
|
|
}
|
|
|
|
static int devlink_param_get(struct devlink *devlink,
|
|
const struct devlink_param *param,
|
|
struct devlink_param_gset_ctx *ctx)
|
|
{
|
|
if (!param->get)
|
|
return -EOPNOTSUPP;
|
|
return param->get(devlink, param->id, ctx);
|
|
}
|
|
|
|
static int devlink_param_set(struct devlink *devlink,
|
|
const struct devlink_param *param,
|
|
struct devlink_param_gset_ctx *ctx)
|
|
{
|
|
if (!param->set)
|
|
return -EOPNOTSUPP;
|
|
return param->set(devlink, param->id, ctx);
|
|
}
|
|
|
|
static int
|
|
devlink_param_type_to_nla_type(enum devlink_param_type param_type)
|
|
{
|
|
switch (param_type) {
|
|
case DEVLINK_PARAM_TYPE_U8:
|
|
return NLA_U8;
|
|
case DEVLINK_PARAM_TYPE_U16:
|
|
return NLA_U16;
|
|
case DEVLINK_PARAM_TYPE_U32:
|
|
return NLA_U32;
|
|
case DEVLINK_PARAM_TYPE_STRING:
|
|
return NLA_STRING;
|
|
case DEVLINK_PARAM_TYPE_BOOL:
|
|
return NLA_FLAG;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
|
|
static int
|
|
devlink_nl_param_value_fill_one(struct sk_buff *msg,
|
|
enum devlink_param_type type,
|
|
enum devlink_param_cmode cmode,
|
|
union devlink_param_value val)
|
|
{
|
|
struct nlattr *param_value_attr;
|
|
|
|
param_value_attr = nla_nest_start_noflag(msg,
|
|
DEVLINK_ATTR_PARAM_VALUE);
|
|
if (!param_value_attr)
|
|
goto nla_put_failure;
|
|
|
|
if (nla_put_u8(msg, DEVLINK_ATTR_PARAM_VALUE_CMODE, cmode))
|
|
goto value_nest_cancel;
|
|
|
|
switch (type) {
|
|
case DEVLINK_PARAM_TYPE_U8:
|
|
if (nla_put_u8(msg, DEVLINK_ATTR_PARAM_VALUE_DATA, val.vu8))
|
|
goto value_nest_cancel;
|
|
break;
|
|
case DEVLINK_PARAM_TYPE_U16:
|
|
if (nla_put_u16(msg, DEVLINK_ATTR_PARAM_VALUE_DATA, val.vu16))
|
|
goto value_nest_cancel;
|
|
break;
|
|
case DEVLINK_PARAM_TYPE_U32:
|
|
if (nla_put_u32(msg, DEVLINK_ATTR_PARAM_VALUE_DATA, val.vu32))
|
|
goto value_nest_cancel;
|
|
break;
|
|
case DEVLINK_PARAM_TYPE_STRING:
|
|
if (nla_put_string(msg, DEVLINK_ATTR_PARAM_VALUE_DATA,
|
|
val.vstr))
|
|
goto value_nest_cancel;
|
|
break;
|
|
case DEVLINK_PARAM_TYPE_BOOL:
|
|
if (val.vbool &&
|
|
nla_put_flag(msg, DEVLINK_ATTR_PARAM_VALUE_DATA))
|
|
goto value_nest_cancel;
|
|
break;
|
|
}
|
|
|
|
nla_nest_end(msg, param_value_attr);
|
|
return 0;
|
|
|
|
value_nest_cancel:
|
|
nla_nest_cancel(msg, param_value_attr);
|
|
nla_put_failure:
|
|
return -EMSGSIZE;
|
|
}
|
|
|
|
static int devlink_nl_param_fill(struct sk_buff *msg, struct devlink *devlink,
|
|
unsigned int port_index,
|
|
struct devlink_param_item *param_item,
|
|
enum devlink_command cmd,
|
|
u32 portid, u32 seq, int flags)
|
|
{
|
|
union devlink_param_value param_value[DEVLINK_PARAM_CMODE_MAX + 1];
|
|
bool param_value_set[DEVLINK_PARAM_CMODE_MAX + 1] = {};
|
|
const struct devlink_param *param = param_item->param;
|
|
struct devlink_param_gset_ctx ctx;
|
|
struct nlattr *param_values_list;
|
|
struct nlattr *param_attr;
|
|
int nla_type;
|
|
void *hdr;
|
|
int err;
|
|
int i;
|
|
|
|
/* Get value from driver part to driverinit configuration mode */
|
|
for (i = 0; i <= DEVLINK_PARAM_CMODE_MAX; i++) {
|
|
if (!devlink_param_cmode_is_supported(param, i))
|
|
continue;
|
|
if (i == DEVLINK_PARAM_CMODE_DRIVERINIT) {
|
|
if (!param_item->driverinit_value_valid)
|
|
return -EOPNOTSUPP;
|
|
param_value[i] = param_item->driverinit_value;
|
|
} else {
|
|
ctx.cmode = i;
|
|
err = devlink_param_get(devlink, param, &ctx);
|
|
if (err)
|
|
return err;
|
|
param_value[i] = ctx.val;
|
|
}
|
|
param_value_set[i] = true;
|
|
}
|
|
|
|
hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
|
|
if (!hdr)
|
|
return -EMSGSIZE;
|
|
|
|
if (devlink_nl_put_handle(msg, devlink))
|
|
goto genlmsg_cancel;
|
|
|
|
if (cmd == DEVLINK_CMD_PORT_PARAM_GET ||
|
|
cmd == DEVLINK_CMD_PORT_PARAM_NEW ||
|
|
cmd == DEVLINK_CMD_PORT_PARAM_DEL)
|
|
if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, port_index))
|
|
goto genlmsg_cancel;
|
|
|
|
param_attr = nla_nest_start_noflag(msg, DEVLINK_ATTR_PARAM);
|
|
if (!param_attr)
|
|
goto genlmsg_cancel;
|
|
if (nla_put_string(msg, DEVLINK_ATTR_PARAM_NAME, param->name))
|
|
goto param_nest_cancel;
|
|
if (param->generic && nla_put_flag(msg, DEVLINK_ATTR_PARAM_GENERIC))
|
|
goto param_nest_cancel;
|
|
|
|
nla_type = devlink_param_type_to_nla_type(param->type);
|
|
if (nla_type < 0)
|
|
goto param_nest_cancel;
|
|
if (nla_put_u8(msg, DEVLINK_ATTR_PARAM_TYPE, nla_type))
|
|
goto param_nest_cancel;
|
|
|
|
param_values_list = nla_nest_start_noflag(msg,
|
|
DEVLINK_ATTR_PARAM_VALUES_LIST);
|
|
if (!param_values_list)
|
|
goto param_nest_cancel;
|
|
|
|
for (i = 0; i <= DEVLINK_PARAM_CMODE_MAX; i++) {
|
|
if (!param_value_set[i])
|
|
continue;
|
|
err = devlink_nl_param_value_fill_one(msg, param->type,
|
|
i, param_value[i]);
|
|
if (err)
|
|
goto values_list_nest_cancel;
|
|
}
|
|
|
|
nla_nest_end(msg, param_values_list);
|
|
nla_nest_end(msg, param_attr);
|
|
genlmsg_end(msg, hdr);
|
|
return 0;
|
|
|
|
values_list_nest_cancel:
|
|
nla_nest_end(msg, param_values_list);
|
|
param_nest_cancel:
|
|
nla_nest_cancel(msg, param_attr);
|
|
genlmsg_cancel:
|
|
genlmsg_cancel(msg, hdr);
|
|
return -EMSGSIZE;
|
|
}
|
|
|
|
static void devlink_param_notify(struct devlink *devlink,
|
|
unsigned int port_index,
|
|
struct devlink_param_item *param_item,
|
|
enum devlink_command cmd)
|
|
{
|
|
struct sk_buff *msg;
|
|
int err;
|
|
|
|
WARN_ON(cmd != DEVLINK_CMD_PARAM_NEW && cmd != DEVLINK_CMD_PARAM_DEL &&
|
|
cmd != DEVLINK_CMD_PORT_PARAM_NEW &&
|
|
cmd != DEVLINK_CMD_PORT_PARAM_DEL);
|
|
ASSERT_DEVLINK_REGISTERED(devlink);
|
|
|
|
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
|
|
if (!msg)
|
|
return;
|
|
err = devlink_nl_param_fill(msg, devlink, port_index, param_item, cmd,
|
|
0, 0, 0);
|
|
if (err) {
|
|
nlmsg_free(msg);
|
|
return;
|
|
}
|
|
|
|
genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
|
|
msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
|
|
}
|
|
|
|
static int devlink_nl_cmd_param_get_dumpit(struct sk_buff *msg,
|
|
struct netlink_callback *cb)
|
|
{
|
|
struct devlink_param_item *param_item;
|
|
struct devlink *devlink;
|
|
int start = cb->args[0];
|
|
unsigned long index;
|
|
int idx = 0;
|
|
int err = 0;
|
|
|
|
mutex_lock(&devlink_mutex);
|
|
xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) {
|
|
if (!devlink_try_get(devlink))
|
|
continue;
|
|
|
|
if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
|
|
goto retry;
|
|
|
|
mutex_lock(&devlink->lock);
|
|
list_for_each_entry(param_item, &devlink->param_list, list) {
|
|
if (idx < start) {
|
|
idx++;
|
|
continue;
|
|
}
|
|
err = devlink_nl_param_fill(msg, devlink, 0, param_item,
|
|
DEVLINK_CMD_PARAM_GET,
|
|
NETLINK_CB(cb->skb).portid,
|
|
cb->nlh->nlmsg_seq,
|
|
NLM_F_MULTI);
|
|
if (err == -EOPNOTSUPP) {
|
|
err = 0;
|
|
} else if (err) {
|
|
mutex_unlock(&devlink->lock);
|
|
devlink_put(devlink);
|
|
goto out;
|
|
}
|
|
idx++;
|
|
}
|
|
mutex_unlock(&devlink->lock);
|
|
retry:
|
|
devlink_put(devlink);
|
|
}
|
|
out:
|
|
mutex_unlock(&devlink_mutex);
|
|
|
|
if (err != -EMSGSIZE)
|
|
return err;
|
|
|
|
cb->args[0] = idx;
|
|
return msg->len;
|
|
}
|
|
|
|
static int
|
|
devlink_param_type_get_from_info(struct genl_info *info,
|
|
enum devlink_param_type *param_type)
|
|
{
|
|
if (!info->attrs[DEVLINK_ATTR_PARAM_TYPE])
|
|
return -EINVAL;
|
|
|
|
switch (nla_get_u8(info->attrs[DEVLINK_ATTR_PARAM_TYPE])) {
|
|
case NLA_U8:
|
|
*param_type = DEVLINK_PARAM_TYPE_U8;
|
|
break;
|
|
case NLA_U16:
|
|
*param_type = DEVLINK_PARAM_TYPE_U16;
|
|
break;
|
|
case NLA_U32:
|
|
*param_type = DEVLINK_PARAM_TYPE_U32;
|
|
break;
|
|
case NLA_STRING:
|
|
*param_type = DEVLINK_PARAM_TYPE_STRING;
|
|
break;
|
|
case NLA_FLAG:
|
|
*param_type = DEVLINK_PARAM_TYPE_BOOL;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
devlink_param_value_get_from_info(const struct devlink_param *param,
|
|
struct genl_info *info,
|
|
union devlink_param_value *value)
|
|
{
|
|
struct nlattr *param_data;
|
|
int len;
|
|
|
|
param_data = info->attrs[DEVLINK_ATTR_PARAM_VALUE_DATA];
|
|
|
|
if (param->type != DEVLINK_PARAM_TYPE_BOOL && !param_data)
|
|
return -EINVAL;
|
|
|
|
switch (param->type) {
|
|
case DEVLINK_PARAM_TYPE_U8:
|
|
if (nla_len(param_data) != sizeof(u8))
|
|
return -EINVAL;
|
|
value->vu8 = nla_get_u8(param_data);
|
|
break;
|
|
case DEVLINK_PARAM_TYPE_U16:
|
|
if (nla_len(param_data) != sizeof(u16))
|
|
return -EINVAL;
|
|
value->vu16 = nla_get_u16(param_data);
|
|
break;
|
|
case DEVLINK_PARAM_TYPE_U32:
|
|
if (nla_len(param_data) != sizeof(u32))
|
|
return -EINVAL;
|
|
value->vu32 = nla_get_u32(param_data);
|
|
break;
|
|
case DEVLINK_PARAM_TYPE_STRING:
|
|
len = strnlen(nla_data(param_data), nla_len(param_data));
|
|
if (len == nla_len(param_data) ||
|
|
len >= __DEVLINK_PARAM_MAX_STRING_VALUE)
|
|
return -EINVAL;
|
|
strcpy(value->vstr, nla_data(param_data));
|
|
break;
|
|
case DEVLINK_PARAM_TYPE_BOOL:
|
|
if (param_data && nla_len(param_data))
|
|
return -EINVAL;
|
|
value->vbool = nla_get_flag(param_data);
|
|
break;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static struct devlink_param_item *
|
|
devlink_param_get_from_info(struct list_head *param_list,
|
|
struct genl_info *info)
|
|
{
|
|
char *param_name;
|
|
|
|
if (!info->attrs[DEVLINK_ATTR_PARAM_NAME])
|
|
return NULL;
|
|
|
|
param_name = nla_data(info->attrs[DEVLINK_ATTR_PARAM_NAME]);
|
|
return devlink_param_find_by_name(param_list, param_name);
|
|
}
|
|
|
|
static int devlink_nl_cmd_param_get_doit(struct sk_buff *skb,
|
|
struct genl_info *info)
|
|
{
|
|
struct devlink *devlink = info->user_ptr[0];
|
|
struct devlink_param_item *param_item;
|
|
struct sk_buff *msg;
|
|
int err;
|
|
|
|
param_item = devlink_param_get_from_info(&devlink->param_list, info);
|
|
if (!param_item)
|
|
return -EINVAL;
|
|
|
|
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
|
|
if (!msg)
|
|
return -ENOMEM;
|
|
|
|
err = devlink_nl_param_fill(msg, devlink, 0, param_item,
|
|
DEVLINK_CMD_PARAM_GET,
|
|
info->snd_portid, info->snd_seq, 0);
|
|
if (err) {
|
|
nlmsg_free(msg);
|
|
return err;
|
|
}
|
|
|
|
return genlmsg_reply(msg, info);
|
|
}
|
|
|
|
static int __devlink_nl_cmd_param_set_doit(struct devlink *devlink,
|
|
unsigned int port_index,
|
|
struct list_head *param_list,
|
|
struct genl_info *info,
|
|
enum devlink_command cmd)
|
|
{
|
|
enum devlink_param_type param_type;
|
|
struct devlink_param_gset_ctx ctx;
|
|
enum devlink_param_cmode cmode;
|
|
struct devlink_param_item *param_item;
|
|
const struct devlink_param *param;
|
|
union devlink_param_value value;
|
|
int err = 0;
|
|
|
|
param_item = devlink_param_get_from_info(param_list, info);
|
|
if (!param_item)
|
|
return -EINVAL;
|
|
param = param_item->param;
|
|
err = devlink_param_type_get_from_info(info, ¶m_type);
|
|
if (err)
|
|
return err;
|
|
if (param_type != param->type)
|
|
return -EINVAL;
|
|
err = devlink_param_value_get_from_info(param, info, &value);
|
|
if (err)
|
|
return err;
|
|
if (param->validate) {
|
|
err = param->validate(devlink, param->id, value, info->extack);
|
|
if (err)
|
|
return err;
|
|
}
|
|
|
|
if (!info->attrs[DEVLINK_ATTR_PARAM_VALUE_CMODE])
|
|
return -EINVAL;
|
|
cmode = nla_get_u8(info->attrs[DEVLINK_ATTR_PARAM_VALUE_CMODE]);
|
|
if (!devlink_param_cmode_is_supported(param, cmode))
|
|
return -EOPNOTSUPP;
|
|
|
|
if (cmode == DEVLINK_PARAM_CMODE_DRIVERINIT) {
|
|
if (param->type == DEVLINK_PARAM_TYPE_STRING)
|
|
strcpy(param_item->driverinit_value.vstr, value.vstr);
|
|
else
|
|
param_item->driverinit_value = value;
|
|
param_item->driverinit_value_valid = true;
|
|
} else {
|
|
if (!param->set)
|
|
return -EOPNOTSUPP;
|
|
ctx.val = value;
|
|
ctx.cmode = cmode;
|
|
err = devlink_param_set(devlink, param, &ctx);
|
|
if (err)
|
|
return err;
|
|
}
|
|
|
|
devlink_param_notify(devlink, port_index, param_item, cmd);
|
|
return 0;
|
|
}
|
|
|
|
static int devlink_nl_cmd_param_set_doit(struct sk_buff *skb,
|
|
struct genl_info *info)
|
|
{
|
|
struct devlink *devlink = info->user_ptr[0];
|
|
|
|
return __devlink_nl_cmd_param_set_doit(devlink, 0, &devlink->param_list,
|
|
info, DEVLINK_CMD_PARAM_NEW);
|
|
}
|
|
|
|
static int devlink_nl_cmd_port_param_get_dumpit(struct sk_buff *msg,
|
|
struct netlink_callback *cb)
|
|
{
|
|
struct devlink_param_item *param_item;
|
|
struct devlink_port *devlink_port;
|
|
struct devlink *devlink;
|
|
int start = cb->args[0];
|
|
unsigned long index;
|
|
int idx = 0;
|
|
int err = 0;
|
|
|
|
mutex_lock(&devlink_mutex);
|
|
xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) {
|
|
if (!devlink_try_get(devlink))
|
|
continue;
|
|
|
|
if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
|
|
goto retry;
|
|
|
|
mutex_lock(&devlink->lock);
|
|
list_for_each_entry(devlink_port, &devlink->port_list, list) {
|
|
list_for_each_entry(param_item,
|
|
&devlink_port->param_list, list) {
|
|
if (idx < start) {
|
|
idx++;
|
|
continue;
|
|
}
|
|
err = devlink_nl_param_fill(msg,
|
|
devlink_port->devlink,
|
|
devlink_port->index, param_item,
|
|
DEVLINK_CMD_PORT_PARAM_GET,
|
|
NETLINK_CB(cb->skb).portid,
|
|
cb->nlh->nlmsg_seq,
|
|
NLM_F_MULTI);
|
|
if (err == -EOPNOTSUPP) {
|
|
err = 0;
|
|
} else if (err) {
|
|
mutex_unlock(&devlink->lock);
|
|
devlink_put(devlink);
|
|
goto out;
|
|
}
|
|
idx++;
|
|
}
|
|
}
|
|
mutex_unlock(&devlink->lock);
|
|
retry:
|
|
devlink_put(devlink);
|
|
}
|
|
out:
|
|
mutex_unlock(&devlink_mutex);
|
|
|
|
if (err != -EMSGSIZE)
|
|
return err;
|
|
|
|
cb->args[0] = idx;
|
|
return msg->len;
|
|
}
|
|
|
|
static int devlink_nl_cmd_port_param_get_doit(struct sk_buff *skb,
|
|
struct genl_info *info)
|
|
{
|
|
struct devlink_port *devlink_port = info->user_ptr[1];
|
|
struct devlink_param_item *param_item;
|
|
struct sk_buff *msg;
|
|
int err;
|
|
|
|
param_item = devlink_param_get_from_info(&devlink_port->param_list,
|
|
info);
|
|
if (!param_item)
|
|
return -EINVAL;
|
|
|
|
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
|
|
if (!msg)
|
|
return -ENOMEM;
|
|
|
|
err = devlink_nl_param_fill(msg, devlink_port->devlink,
|
|
devlink_port->index, param_item,
|
|
DEVLINK_CMD_PORT_PARAM_GET,
|
|
info->snd_portid, info->snd_seq, 0);
|
|
if (err) {
|
|
nlmsg_free(msg);
|
|
return err;
|
|
}
|
|
|
|
return genlmsg_reply(msg, info);
|
|
}
|
|
|
|
static int devlink_nl_cmd_port_param_set_doit(struct sk_buff *skb,
|
|
struct genl_info *info)
|
|
{
|
|
struct devlink_port *devlink_port = info->user_ptr[1];
|
|
|
|
return __devlink_nl_cmd_param_set_doit(devlink_port->devlink,
|
|
devlink_port->index,
|
|
&devlink_port->param_list, info,
|
|
DEVLINK_CMD_PORT_PARAM_NEW);
|
|
}
|
|
|
|
static int devlink_nl_region_snapshot_id_put(struct sk_buff *msg,
|
|
struct devlink *devlink,
|
|
struct devlink_snapshot *snapshot)
|
|
{
|
|
struct nlattr *snap_attr;
|
|
int err;
|
|
|
|
snap_attr = nla_nest_start_noflag(msg, DEVLINK_ATTR_REGION_SNAPSHOT);
|
|
if (!snap_attr)
|
|
return -EINVAL;
|
|
|
|
err = nla_put_u32(msg, DEVLINK_ATTR_REGION_SNAPSHOT_ID, snapshot->id);
|
|
if (err)
|
|
goto nla_put_failure;
|
|
|
|
nla_nest_end(msg, snap_attr);
|
|
return 0;
|
|
|
|
nla_put_failure:
|
|
nla_nest_cancel(msg, snap_attr);
|
|
return err;
|
|
}
|
|
|
|
static int devlink_nl_region_snapshots_id_put(struct sk_buff *msg,
|
|
struct devlink *devlink,
|
|
struct devlink_region *region)
|
|
{
|
|
struct devlink_snapshot *snapshot;
|
|
struct nlattr *snapshots_attr;
|
|
int err;
|
|
|
|
snapshots_attr = nla_nest_start_noflag(msg,
|
|
DEVLINK_ATTR_REGION_SNAPSHOTS);
|
|
if (!snapshots_attr)
|
|
return -EINVAL;
|
|
|
|
list_for_each_entry(snapshot, ®ion->snapshot_list, list) {
|
|
err = devlink_nl_region_snapshot_id_put(msg, devlink, snapshot);
|
|
if (err)
|
|
goto nla_put_failure;
|
|
}
|
|
|
|
nla_nest_end(msg, snapshots_attr);
|
|
return 0;
|
|
|
|
nla_put_failure:
|
|
nla_nest_cancel(msg, snapshots_attr);
|
|
return err;
|
|
}
|
|
|
|
static int devlink_nl_region_fill(struct sk_buff *msg, struct devlink *devlink,
|
|
enum devlink_command cmd, u32 portid,
|
|
u32 seq, int flags,
|
|
struct devlink_region *region)
|
|
{
|
|
void *hdr;
|
|
int err;
|
|
|
|
hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
|
|
if (!hdr)
|
|
return -EMSGSIZE;
|
|
|
|
err = devlink_nl_put_handle(msg, devlink);
|
|
if (err)
|
|
goto nla_put_failure;
|
|
|
|
if (region->port) {
|
|
err = nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX,
|
|
region->port->index);
|
|
if (err)
|
|
goto nla_put_failure;
|
|
}
|
|
|
|
err = nla_put_string(msg, DEVLINK_ATTR_REGION_NAME, region->ops->name);
|
|
if (err)
|
|
goto nla_put_failure;
|
|
|
|
err = nla_put_u64_64bit(msg, DEVLINK_ATTR_REGION_SIZE,
|
|
region->size,
|
|
DEVLINK_ATTR_PAD);
|
|
if (err)
|
|
goto nla_put_failure;
|
|
|
|
err = nla_put_u32(msg, DEVLINK_ATTR_REGION_MAX_SNAPSHOTS,
|
|
region->max_snapshots);
|
|
if (err)
|
|
goto nla_put_failure;
|
|
|
|
err = devlink_nl_region_snapshots_id_put(msg, devlink, region);
|
|
if (err)
|
|
goto nla_put_failure;
|
|
|
|
genlmsg_end(msg, hdr);
|
|
return 0;
|
|
|
|
nla_put_failure:
|
|
genlmsg_cancel(msg, hdr);
|
|
return err;
|
|
}
|
|
|
|
static struct sk_buff *
|
|
devlink_nl_region_notify_build(struct devlink_region *region,
|
|
struct devlink_snapshot *snapshot,
|
|
enum devlink_command cmd, u32 portid, u32 seq)
|
|
{
|
|
struct devlink *devlink = region->devlink;
|
|
struct sk_buff *msg;
|
|
void *hdr;
|
|
int err;
|
|
|
|
|
|
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
|
|
if (!msg)
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, 0, cmd);
|
|
if (!hdr) {
|
|
err = -EMSGSIZE;
|
|
goto out_free_msg;
|
|
}
|
|
|
|
err = devlink_nl_put_handle(msg, devlink);
|
|
if (err)
|
|
goto out_cancel_msg;
|
|
|
|
if (region->port) {
|
|
err = nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX,
|
|
region->port->index);
|
|
if (err)
|
|
goto out_cancel_msg;
|
|
}
|
|
|
|
err = nla_put_string(msg, DEVLINK_ATTR_REGION_NAME,
|
|
region->ops->name);
|
|
if (err)
|
|
goto out_cancel_msg;
|
|
|
|
if (snapshot) {
|
|
err = nla_put_u32(msg, DEVLINK_ATTR_REGION_SNAPSHOT_ID,
|
|
snapshot->id);
|
|
if (err)
|
|
goto out_cancel_msg;
|
|
} else {
|
|
err = nla_put_u64_64bit(msg, DEVLINK_ATTR_REGION_SIZE,
|
|
region->size, DEVLINK_ATTR_PAD);
|
|
if (err)
|
|
goto out_cancel_msg;
|
|
}
|
|
genlmsg_end(msg, hdr);
|
|
|
|
return msg;
|
|
|
|
out_cancel_msg:
|
|
genlmsg_cancel(msg, hdr);
|
|
out_free_msg:
|
|
nlmsg_free(msg);
|
|
return ERR_PTR(err);
|
|
}
|
|
|
|
static void devlink_nl_region_notify(struct devlink_region *region,
|
|
struct devlink_snapshot *snapshot,
|
|
enum devlink_command cmd)
|
|
{
|
|
struct devlink *devlink = region->devlink;
|
|
struct sk_buff *msg;
|
|
|
|
WARN_ON(cmd != DEVLINK_CMD_REGION_NEW && cmd != DEVLINK_CMD_REGION_DEL);
|
|
if (!xa_get_mark(&devlinks, devlink->index, DEVLINK_REGISTERED))
|
|
return;
|
|
|
|
msg = devlink_nl_region_notify_build(region, snapshot, cmd, 0, 0);
|
|
if (IS_ERR(msg))
|
|
return;
|
|
|
|
genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink), msg,
|
|
0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
|
|
}
|
|
|
|
/**
|
|
* __devlink_snapshot_id_increment - Increment number of snapshots using an id
|
|
* @devlink: devlink instance
|
|
* @id: the snapshot id
|
|
*
|
|
* Track when a new snapshot begins using an id. Load the count for the
|
|
* given id from the snapshot xarray, increment it, and store it back.
|
|
*
|
|
* Called when a new snapshot is created with the given id.
|
|
*
|
|
* The id *must* have been previously allocated by
|
|
* devlink_region_snapshot_id_get().
|
|
*
|
|
* Returns 0 on success, or an error on failure.
|
|
*/
|
|
static int __devlink_snapshot_id_increment(struct devlink *devlink, u32 id)
|
|
{
|
|
unsigned long count;
|
|
void *p;
|
|
|
|
lockdep_assert_held(&devlink->lock);
|
|
|
|
p = xa_load(&devlink->snapshot_ids, id);
|
|
if (WARN_ON(!p))
|
|
return -EINVAL;
|
|
|
|
if (WARN_ON(!xa_is_value(p)))
|
|
return -EINVAL;
|
|
|
|
count = xa_to_value(p);
|
|
count++;
|
|
|
|
return xa_err(xa_store(&devlink->snapshot_ids, id, xa_mk_value(count),
|
|
GFP_KERNEL));
|
|
}
|
|
|
|
/**
|
|
* __devlink_snapshot_id_decrement - Decrease number of snapshots using an id
|
|
* @devlink: devlink instance
|
|
* @id: the snapshot id
|
|
*
|
|
* Track when a snapshot is deleted and stops using an id. Load the count
|
|
* for the given id from the snapshot xarray, decrement it, and store it
|
|
* back.
|
|
*
|
|
* If the count reaches zero, erase this id from the xarray, freeing it
|
|
* up for future re-use by devlink_region_snapshot_id_get().
|
|
*
|
|
* Called when a snapshot using the given id is deleted, and when the
|
|
* initial allocator of the id is finished using it.
|
|
*/
|
|
static void __devlink_snapshot_id_decrement(struct devlink *devlink, u32 id)
|
|
{
|
|
unsigned long count;
|
|
void *p;
|
|
|
|
lockdep_assert_held(&devlink->lock);
|
|
|
|
p = xa_load(&devlink->snapshot_ids, id);
|
|
if (WARN_ON(!p))
|
|
return;
|
|
|
|
if (WARN_ON(!xa_is_value(p)))
|
|
return;
|
|
|
|
count = xa_to_value(p);
|
|
|
|
if (count > 1) {
|
|
count--;
|
|
xa_store(&devlink->snapshot_ids, id, xa_mk_value(count),
|
|
GFP_KERNEL);
|
|
} else {
|
|
/* If this was the last user, we can erase this id */
|
|
xa_erase(&devlink->snapshot_ids, id);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* __devlink_snapshot_id_insert - Insert a specific snapshot ID
|
|
* @devlink: devlink instance
|
|
* @id: the snapshot id
|
|
*
|
|
* Mark the given snapshot id as used by inserting a zero value into the
|
|
* snapshot xarray.
|
|
*
|
|
* This must be called while holding the devlink instance lock. Unlike
|
|
* devlink_snapshot_id_get, the initial reference count is zero, not one.
|
|
* It is expected that the id will immediately be used before
|
|
* releasing the devlink instance lock.
|
|
*
|
|
* Returns zero on success, or an error code if the snapshot id could not
|
|
* be inserted.
|
|
*/
|
|
static int __devlink_snapshot_id_insert(struct devlink *devlink, u32 id)
|
|
{
|
|
lockdep_assert_held(&devlink->lock);
|
|
|
|
if (xa_load(&devlink->snapshot_ids, id))
|
|
return -EEXIST;
|
|
|
|
return xa_err(xa_store(&devlink->snapshot_ids, id, xa_mk_value(0),
|
|
GFP_KERNEL));
|
|
}
|
|
|
|
/**
|
|
* __devlink_region_snapshot_id_get - get snapshot ID
|
|
* @devlink: devlink instance
|
|
* @id: storage to return snapshot id
|
|
*
|
|
* Allocates a new snapshot id. Returns zero on success, or a negative
|
|
* error on failure. Must be called while holding the devlink instance
|
|
* lock.
|
|
*
|
|
* Snapshot IDs are tracked using an xarray which stores the number of
|
|
* users of the snapshot id.
|
|
*
|
|
* Note that the caller of this function counts as a 'user', in order to
|
|
* avoid race conditions. The caller must release its hold on the
|
|
* snapshot by using devlink_region_snapshot_id_put.
|
|
*/
|
|
static int __devlink_region_snapshot_id_get(struct devlink *devlink, u32 *id)
|
|
{
|
|
lockdep_assert_held(&devlink->lock);
|
|
|
|
return xa_alloc(&devlink->snapshot_ids, id, xa_mk_value(1),
|
|
xa_limit_32b, GFP_KERNEL);
|
|
}
|
|
|
|
/**
|
|
* __devlink_region_snapshot_create - create a new snapshot
|
|
* This will add a new snapshot of a region. The snapshot
|
|
* will be stored on the region struct and can be accessed
|
|
* from devlink. This is useful for future analyses of snapshots.
|
|
* Multiple snapshots can be created on a region.
|
|
* The @snapshot_id should be obtained using the getter function.
|
|
*
|
|
* Must be called only while holding the devlink instance lock.
|
|
*
|
|
* @region: devlink region of the snapshot
|
|
* @data: snapshot data
|
|
* @snapshot_id: snapshot id to be created
|
|
*/
|
|
static int
|
|
__devlink_region_snapshot_create(struct devlink_region *region,
|
|
u8 *data, u32 snapshot_id)
|
|
{
|
|
struct devlink *devlink = region->devlink;
|
|
struct devlink_snapshot *snapshot;
|
|
int err;
|
|
|
|
lockdep_assert_held(&devlink->lock);
|
|
|
|
/* check if region can hold one more snapshot */
|
|
if (region->cur_snapshots == region->max_snapshots)
|
|
return -ENOSPC;
|
|
|
|
if (devlink_region_snapshot_get_by_id(region, snapshot_id))
|
|
return -EEXIST;
|
|
|
|
snapshot = kzalloc(sizeof(*snapshot), GFP_KERNEL);
|
|
if (!snapshot)
|
|
return -ENOMEM;
|
|
|
|
err = __devlink_snapshot_id_increment(devlink, snapshot_id);
|
|
if (err)
|
|
goto err_snapshot_id_increment;
|
|
|
|
snapshot->id = snapshot_id;
|
|
snapshot->region = region;
|
|
snapshot->data = data;
|
|
|
|
list_add_tail(&snapshot->list, ®ion->snapshot_list);
|
|
|
|
region->cur_snapshots++;
|
|
|
|
devlink_nl_region_notify(region, snapshot, DEVLINK_CMD_REGION_NEW);
|
|
return 0;
|
|
|
|
err_snapshot_id_increment:
|
|
kfree(snapshot);
|
|
return err;
|
|
}
|
|
|
|
static void devlink_region_snapshot_del(struct devlink_region *region,
|
|
struct devlink_snapshot *snapshot)
|
|
{
|
|
struct devlink *devlink = region->devlink;
|
|
|
|
lockdep_assert_held(&devlink->lock);
|
|
|
|
devlink_nl_region_notify(region, snapshot, DEVLINK_CMD_REGION_DEL);
|
|
region->cur_snapshots--;
|
|
list_del(&snapshot->list);
|
|
region->ops->destructor(snapshot->data);
|
|
__devlink_snapshot_id_decrement(devlink, snapshot->id);
|
|
kfree(snapshot);
|
|
}
|
|
|
|
static int devlink_nl_cmd_region_get_doit(struct sk_buff *skb,
|
|
struct genl_info *info)
|
|
{
|
|
struct devlink *devlink = info->user_ptr[0];
|
|
struct devlink_port *port = NULL;
|
|
struct devlink_region *region;
|
|
const char *region_name;
|
|
struct sk_buff *msg;
|
|
unsigned int index;
|
|
int err;
|
|
|
|
if (!info->attrs[DEVLINK_ATTR_REGION_NAME])
|
|
return -EINVAL;
|
|
|
|
if (info->attrs[DEVLINK_ATTR_PORT_INDEX]) {
|
|
index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
|
|
|
|
port = devlink_port_get_by_index(devlink, index);
|
|
if (!port)
|
|
return -ENODEV;
|
|
}
|
|
|
|
region_name = nla_data(info->attrs[DEVLINK_ATTR_REGION_NAME]);
|
|
if (port)
|
|
region = devlink_port_region_get_by_name(port, region_name);
|
|
else
|
|
region = devlink_region_get_by_name(devlink, region_name);
|
|
|
|
if (!region)
|
|
return -EINVAL;
|
|
|
|
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
|
|
if (!msg)
|
|
return -ENOMEM;
|
|
|
|
err = devlink_nl_region_fill(msg, devlink, DEVLINK_CMD_REGION_GET,
|
|
info->snd_portid, info->snd_seq, 0,
|
|
region);
|
|
if (err) {
|
|
nlmsg_free(msg);
|
|
return err;
|
|
}
|
|
|
|
return genlmsg_reply(msg, info);
|
|
}
|
|
|
|
static int devlink_nl_cmd_region_get_port_dumpit(struct sk_buff *msg,
|
|
struct netlink_callback *cb,
|
|
struct devlink_port *port,
|
|
int *idx,
|
|
int start)
|
|
{
|
|
struct devlink_region *region;
|
|
int err = 0;
|
|
|
|
list_for_each_entry(region, &port->region_list, list) {
|
|
if (*idx < start) {
|
|
(*idx)++;
|
|
continue;
|
|
}
|
|
err = devlink_nl_region_fill(msg, port->devlink,
|
|
DEVLINK_CMD_REGION_GET,
|
|
NETLINK_CB(cb->skb).portid,
|
|
cb->nlh->nlmsg_seq,
|
|
NLM_F_MULTI, region);
|
|
if (err)
|
|
goto out;
|
|
(*idx)++;
|
|
}
|
|
|
|
out:
|
|
return err;
|
|
}
|
|
|
|
static int devlink_nl_cmd_region_get_devlink_dumpit(struct sk_buff *msg,
|
|
struct netlink_callback *cb,
|
|
struct devlink *devlink,
|
|
int *idx,
|
|
int start)
|
|
{
|
|
struct devlink_region *region;
|
|
struct devlink_port *port;
|
|
int err = 0;
|
|
|
|
mutex_lock(&devlink->lock);
|
|
list_for_each_entry(region, &devlink->region_list, list) {
|
|
if (*idx < start) {
|
|
(*idx)++;
|
|
continue;
|
|
}
|
|
err = devlink_nl_region_fill(msg, devlink,
|
|
DEVLINK_CMD_REGION_GET,
|
|
NETLINK_CB(cb->skb).portid,
|
|
cb->nlh->nlmsg_seq,
|
|
NLM_F_MULTI, region);
|
|
if (err)
|
|
goto out;
|
|
(*idx)++;
|
|
}
|
|
|
|
list_for_each_entry(port, &devlink->port_list, list) {
|
|
err = devlink_nl_cmd_region_get_port_dumpit(msg, cb, port, idx,
|
|
start);
|
|
if (err)
|
|
goto out;
|
|
}
|
|
|
|
out:
|
|
mutex_unlock(&devlink->lock);
|
|
return err;
|
|
}
|
|
|
|
static int devlink_nl_cmd_region_get_dumpit(struct sk_buff *msg,
|
|
struct netlink_callback *cb)
|
|
{
|
|
struct devlink *devlink;
|
|
int start = cb->args[0];
|
|
unsigned long index;
|
|
int idx = 0;
|
|
int err = 0;
|
|
|
|
mutex_lock(&devlink_mutex);
|
|
xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) {
|
|
if (!devlink_try_get(devlink))
|
|
continue;
|
|
|
|
if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
|
|
goto retry;
|
|
|
|
err = devlink_nl_cmd_region_get_devlink_dumpit(msg, cb, devlink,
|
|
&idx, start);
|
|
retry:
|
|
devlink_put(devlink);
|
|
if (err)
|
|
goto out;
|
|
}
|
|
out:
|
|
mutex_unlock(&devlink_mutex);
|
|
cb->args[0] = idx;
|
|
return msg->len;
|
|
}
|
|
|
|
static int devlink_nl_cmd_region_del(struct sk_buff *skb,
|
|
struct genl_info *info)
|
|
{
|
|
struct devlink *devlink = info->user_ptr[0];
|
|
struct devlink_snapshot *snapshot;
|
|
struct devlink_port *port = NULL;
|
|
struct devlink_region *region;
|
|
const char *region_name;
|
|
unsigned int index;
|
|
u32 snapshot_id;
|
|
|
|
if (!info->attrs[DEVLINK_ATTR_REGION_NAME] ||
|
|
!info->attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID])
|
|
return -EINVAL;
|
|
|
|
region_name = nla_data(info->attrs[DEVLINK_ATTR_REGION_NAME]);
|
|
snapshot_id = nla_get_u32(info->attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID]);
|
|
|
|
if (info->attrs[DEVLINK_ATTR_PORT_INDEX]) {
|
|
index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
|
|
|
|
port = devlink_port_get_by_index(devlink, index);
|
|
if (!port)
|
|
return -ENODEV;
|
|
}
|
|
|
|
if (port)
|
|
region = devlink_port_region_get_by_name(port, region_name);
|
|
else
|
|
region = devlink_region_get_by_name(devlink, region_name);
|
|
|
|
if (!region)
|
|
return -EINVAL;
|
|
|
|
snapshot = devlink_region_snapshot_get_by_id(region, snapshot_id);
|
|
if (!snapshot)
|
|
return -EINVAL;
|
|
|
|
devlink_region_snapshot_del(region, snapshot);
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
devlink_nl_cmd_region_new(struct sk_buff *skb, struct genl_info *info)
|
|
{
|
|
struct devlink *devlink = info->user_ptr[0];
|
|
struct devlink_snapshot *snapshot;
|
|
struct devlink_port *port = NULL;
|
|
struct nlattr *snapshot_id_attr;
|
|
struct devlink_region *region;
|
|
const char *region_name;
|
|
unsigned int index;
|
|
u32 snapshot_id;
|
|
u8 *data;
|
|
int err;
|
|
|
|
if (!info->attrs[DEVLINK_ATTR_REGION_NAME]) {
|
|
NL_SET_ERR_MSG_MOD(info->extack, "No region name provided");
|
|
return -EINVAL;
|
|
}
|
|
|
|
region_name = nla_data(info->attrs[DEVLINK_ATTR_REGION_NAME]);
|
|
|
|
if (info->attrs[DEVLINK_ATTR_PORT_INDEX]) {
|
|
index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
|
|
|
|
port = devlink_port_get_by_index(devlink, index);
|
|
if (!port)
|
|
return -ENODEV;
|
|
}
|
|
|
|
if (port)
|
|
region = devlink_port_region_get_by_name(port, region_name);
|
|
else
|
|
region = devlink_region_get_by_name(devlink, region_name);
|
|
|
|
if (!region) {
|
|
NL_SET_ERR_MSG_MOD(info->extack, "The requested region does not exist");
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (!region->ops->snapshot) {
|
|
NL_SET_ERR_MSG_MOD(info->extack, "The requested region does not support taking an immediate snapshot");
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
if (region->cur_snapshots == region->max_snapshots) {
|
|
NL_SET_ERR_MSG_MOD(info->extack, "The region has reached the maximum number of stored snapshots");
|
|
return -ENOSPC;
|
|
}
|
|
|
|
snapshot_id_attr = info->attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID];
|
|
if (snapshot_id_attr) {
|
|
snapshot_id = nla_get_u32(snapshot_id_attr);
|
|
|
|
if (devlink_region_snapshot_get_by_id(region, snapshot_id)) {
|
|
NL_SET_ERR_MSG_MOD(info->extack, "The requested snapshot id is already in use");
|
|
return -EEXIST;
|
|
}
|
|
|
|
err = __devlink_snapshot_id_insert(devlink, snapshot_id);
|
|
if (err)
|
|
return err;
|
|
} else {
|
|
err = __devlink_region_snapshot_id_get(devlink, &snapshot_id);
|
|
if (err) {
|
|
NL_SET_ERR_MSG_MOD(info->extack, "Failed to allocate a new snapshot id");
|
|
return err;
|
|
}
|
|
}
|
|
|
|
if (port)
|
|
err = region->port_ops->snapshot(port, region->port_ops,
|
|
info->extack, &data);
|
|
else
|
|
err = region->ops->snapshot(devlink, region->ops,
|
|
info->extack, &data);
|
|
if (err)
|
|
goto err_snapshot_capture;
|
|
|
|
err = __devlink_region_snapshot_create(region, data, snapshot_id);
|
|
if (err)
|
|
goto err_snapshot_create;
|
|
|
|
if (!snapshot_id_attr) {
|
|
struct sk_buff *msg;
|
|
|
|
snapshot = devlink_region_snapshot_get_by_id(region,
|
|
snapshot_id);
|
|
if (WARN_ON(!snapshot))
|
|
return -EINVAL;
|
|
|
|
msg = devlink_nl_region_notify_build(region, snapshot,
|
|
DEVLINK_CMD_REGION_NEW,
|
|
info->snd_portid,
|
|
info->snd_seq);
|
|
err = PTR_ERR_OR_ZERO(msg);
|
|
if (err)
|
|
goto err_notify;
|
|
|
|
err = genlmsg_reply(msg, info);
|
|
if (err)
|
|
goto err_notify;
|
|
}
|
|
|
|
return 0;
|
|
|
|
err_snapshot_create:
|
|
region->ops->destructor(data);
|
|
err_snapshot_capture:
|
|
__devlink_snapshot_id_decrement(devlink, snapshot_id);
|
|
return err;
|
|
|
|
err_notify:
|
|
devlink_region_snapshot_del(region, snapshot);
|
|
return err;
|
|
}
|
|
|
|
static int devlink_nl_cmd_region_read_chunk_fill(struct sk_buff *msg,
|
|
struct devlink *devlink,
|
|
u8 *chunk, u32 chunk_size,
|
|
u64 addr)
|
|
{
|
|
struct nlattr *chunk_attr;
|
|
int err;
|
|
|
|
chunk_attr = nla_nest_start_noflag(msg, DEVLINK_ATTR_REGION_CHUNK);
|
|
if (!chunk_attr)
|
|
return -EINVAL;
|
|
|
|
err = nla_put(msg, DEVLINK_ATTR_REGION_CHUNK_DATA, chunk_size, chunk);
|
|
if (err)
|
|
goto nla_put_failure;
|
|
|
|
err = nla_put_u64_64bit(msg, DEVLINK_ATTR_REGION_CHUNK_ADDR, addr,
|
|
DEVLINK_ATTR_PAD);
|
|
if (err)
|
|
goto nla_put_failure;
|
|
|
|
nla_nest_end(msg, chunk_attr);
|
|
return 0;
|
|
|
|
nla_put_failure:
|
|
nla_nest_cancel(msg, chunk_attr);
|
|
return err;
|
|
}
|
|
|
|
#define DEVLINK_REGION_READ_CHUNK_SIZE 256
|
|
|
|
static int devlink_nl_region_read_snapshot_fill(struct sk_buff *skb,
|
|
struct devlink *devlink,
|
|
struct devlink_region *region,
|
|
struct nlattr **attrs,
|
|
u64 start_offset,
|
|
u64 end_offset,
|
|
u64 *new_offset)
|
|
{
|
|
struct devlink_snapshot *snapshot;
|
|
u64 curr_offset = start_offset;
|
|
u32 snapshot_id;
|
|
int err = 0;
|
|
|
|
*new_offset = start_offset;
|
|
|
|
snapshot_id = nla_get_u32(attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID]);
|
|
snapshot = devlink_region_snapshot_get_by_id(region, snapshot_id);
|
|
if (!snapshot)
|
|
return -EINVAL;
|
|
|
|
while (curr_offset < end_offset) {
|
|
u32 data_size;
|
|
u8 *data;
|
|
|
|
if (end_offset - curr_offset < DEVLINK_REGION_READ_CHUNK_SIZE)
|
|
data_size = end_offset - curr_offset;
|
|
else
|
|
data_size = DEVLINK_REGION_READ_CHUNK_SIZE;
|
|
|
|
data = &snapshot->data[curr_offset];
|
|
err = devlink_nl_cmd_region_read_chunk_fill(skb, devlink,
|
|
data, data_size,
|
|
curr_offset);
|
|
if (err)
|
|
break;
|
|
|
|
curr_offset += data_size;
|
|
}
|
|
*new_offset = curr_offset;
|
|
|
|
return err;
|
|
}
|
|
|
|
static int devlink_nl_cmd_region_read_dumpit(struct sk_buff *skb,
|
|
struct netlink_callback *cb)
|
|
{
|
|
const struct genl_dumpit_info *info = genl_dumpit_info(cb);
|
|
u64 ret_offset, start_offset, end_offset = U64_MAX;
|
|
struct nlattr **attrs = info->attrs;
|
|
struct devlink_port *port = NULL;
|
|
struct devlink_region *region;
|
|
struct nlattr *chunks_attr;
|
|
const char *region_name;
|
|
struct devlink *devlink;
|
|
unsigned int index;
|
|
void *hdr;
|
|
int err;
|
|
|
|
start_offset = *((u64 *)&cb->args[0]);
|
|
|
|
mutex_lock(&devlink_mutex);
|
|
devlink = devlink_get_from_attrs(sock_net(cb->skb->sk), attrs);
|
|
if (IS_ERR(devlink)) {
|
|
err = PTR_ERR(devlink);
|
|
goto out_dev;
|
|
}
|
|
|
|
mutex_lock(&devlink->lock);
|
|
|
|
if (!attrs[DEVLINK_ATTR_REGION_NAME] ||
|
|
!attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID]) {
|
|
err = -EINVAL;
|
|
goto out_unlock;
|
|
}
|
|
|
|
if (info->attrs[DEVLINK_ATTR_PORT_INDEX]) {
|
|
index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
|
|
|
|
port = devlink_port_get_by_index(devlink, index);
|
|
if (!port) {
|
|
err = -ENODEV;
|
|
goto out_unlock;
|
|
}
|
|
}
|
|
|
|
region_name = nla_data(attrs[DEVLINK_ATTR_REGION_NAME]);
|
|
|
|
if (port)
|
|
region = devlink_port_region_get_by_name(port, region_name);
|
|
else
|
|
region = devlink_region_get_by_name(devlink, region_name);
|
|
|
|
if (!region) {
|
|
err = -EINVAL;
|
|
goto out_unlock;
|
|
}
|
|
|
|
if (attrs[DEVLINK_ATTR_REGION_CHUNK_ADDR] &&
|
|
attrs[DEVLINK_ATTR_REGION_CHUNK_LEN]) {
|
|
if (!start_offset)
|
|
start_offset =
|
|
nla_get_u64(attrs[DEVLINK_ATTR_REGION_CHUNK_ADDR]);
|
|
|
|
end_offset = nla_get_u64(attrs[DEVLINK_ATTR_REGION_CHUNK_ADDR]);
|
|
end_offset += nla_get_u64(attrs[DEVLINK_ATTR_REGION_CHUNK_LEN]);
|
|
}
|
|
|
|
if (end_offset > region->size)
|
|
end_offset = region->size;
|
|
|
|
/* return 0 if there is no further data to read */
|
|
if (start_offset == end_offset) {
|
|
err = 0;
|
|
goto out_unlock;
|
|
}
|
|
|
|
hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
|
|
&devlink_nl_family, NLM_F_ACK | NLM_F_MULTI,
|
|
DEVLINK_CMD_REGION_READ);
|
|
if (!hdr) {
|
|
err = -EMSGSIZE;
|
|
goto out_unlock;
|
|
}
|
|
|
|
err = devlink_nl_put_handle(skb, devlink);
|
|
if (err)
|
|
goto nla_put_failure;
|
|
|
|
if (region->port) {
|
|
err = nla_put_u32(skb, DEVLINK_ATTR_PORT_INDEX,
|
|
region->port->index);
|
|
if (err)
|
|
goto nla_put_failure;
|
|
}
|
|
|
|
err = nla_put_string(skb, DEVLINK_ATTR_REGION_NAME, region_name);
|
|
if (err)
|
|
goto nla_put_failure;
|
|
|
|
chunks_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_REGION_CHUNKS);
|
|
if (!chunks_attr) {
|
|
err = -EMSGSIZE;
|
|
goto nla_put_failure;
|
|
}
|
|
|
|
err = devlink_nl_region_read_snapshot_fill(skb, devlink,
|
|
region, attrs,
|
|
start_offset,
|
|
end_offset, &ret_offset);
|
|
|
|
if (err && err != -EMSGSIZE)
|
|
goto nla_put_failure;
|
|
|
|
/* Check if there was any progress done to prevent infinite loop */
|
|
if (ret_offset == start_offset) {
|
|
err = -EINVAL;
|
|
goto nla_put_failure;
|
|
}
|
|
|
|
*((u64 *)&cb->args[0]) = ret_offset;
|
|
|
|
nla_nest_end(skb, chunks_attr);
|
|
genlmsg_end(skb, hdr);
|
|
mutex_unlock(&devlink->lock);
|
|
devlink_put(devlink);
|
|
mutex_unlock(&devlink_mutex);
|
|
|
|
return skb->len;
|
|
|
|
nla_put_failure:
|
|
genlmsg_cancel(skb, hdr);
|
|
out_unlock:
|
|
mutex_unlock(&devlink->lock);
|
|
devlink_put(devlink);
|
|
out_dev:
|
|
mutex_unlock(&devlink_mutex);
|
|
return err;
|
|
}
|
|
|
|
struct devlink_info_req {
|
|
struct sk_buff *msg;
|
|
};
|
|
|
|
int devlink_info_driver_name_put(struct devlink_info_req *req, const char *name)
|
|
{
|
|
return nla_put_string(req->msg, DEVLINK_ATTR_INFO_DRIVER_NAME, name);
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_info_driver_name_put);
|
|
|
|
int devlink_info_serial_number_put(struct devlink_info_req *req, const char *sn)
|
|
{
|
|
return nla_put_string(req->msg, DEVLINK_ATTR_INFO_SERIAL_NUMBER, sn);
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_info_serial_number_put);
|
|
|
|
int devlink_info_board_serial_number_put(struct devlink_info_req *req,
|
|
const char *bsn)
|
|
{
|
|
return nla_put_string(req->msg, DEVLINK_ATTR_INFO_BOARD_SERIAL_NUMBER,
|
|
bsn);
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_info_board_serial_number_put);
|
|
|
|
static int devlink_info_version_put(struct devlink_info_req *req, int attr,
|
|
const char *version_name,
|
|
const char *version_value)
|
|
{
|
|
struct nlattr *nest;
|
|
int err;
|
|
|
|
nest = nla_nest_start_noflag(req->msg, attr);
|
|
if (!nest)
|
|
return -EMSGSIZE;
|
|
|
|
err = nla_put_string(req->msg, DEVLINK_ATTR_INFO_VERSION_NAME,
|
|
version_name);
|
|
if (err)
|
|
goto nla_put_failure;
|
|
|
|
err = nla_put_string(req->msg, DEVLINK_ATTR_INFO_VERSION_VALUE,
|
|
version_value);
|
|
if (err)
|
|
goto nla_put_failure;
|
|
|
|
nla_nest_end(req->msg, nest);
|
|
|
|
return 0;
|
|
|
|
nla_put_failure:
|
|
nla_nest_cancel(req->msg, nest);
|
|
return err;
|
|
}
|
|
|
|
int devlink_info_version_fixed_put(struct devlink_info_req *req,
|
|
const char *version_name,
|
|
const char *version_value)
|
|
{
|
|
return devlink_info_version_put(req, DEVLINK_ATTR_INFO_VERSION_FIXED,
|
|
version_name, version_value);
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_info_version_fixed_put);
|
|
|
|
int devlink_info_version_stored_put(struct devlink_info_req *req,
|
|
const char *version_name,
|
|
const char *version_value)
|
|
{
|
|
return devlink_info_version_put(req, DEVLINK_ATTR_INFO_VERSION_STORED,
|
|
version_name, version_value);
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_info_version_stored_put);
|
|
|
|
int devlink_info_version_running_put(struct devlink_info_req *req,
|
|
const char *version_name,
|
|
const char *version_value)
|
|
{
|
|
return devlink_info_version_put(req, DEVLINK_ATTR_INFO_VERSION_RUNNING,
|
|
version_name, version_value);
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_info_version_running_put);
|
|
|
|
static int
|
|
devlink_nl_info_fill(struct sk_buff *msg, struct devlink *devlink,
|
|
enum devlink_command cmd, u32 portid,
|
|
u32 seq, int flags, struct netlink_ext_ack *extack)
|
|
{
|
|
struct devlink_info_req req;
|
|
void *hdr;
|
|
int err;
|
|
|
|
hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
|
|
if (!hdr)
|
|
return -EMSGSIZE;
|
|
|
|
err = -EMSGSIZE;
|
|
if (devlink_nl_put_handle(msg, devlink))
|
|
goto err_cancel_msg;
|
|
|
|
req.msg = msg;
|
|
err = devlink->ops->info_get(devlink, &req, extack);
|
|
if (err)
|
|
goto err_cancel_msg;
|
|
|
|
genlmsg_end(msg, hdr);
|
|
return 0;
|
|
|
|
err_cancel_msg:
|
|
genlmsg_cancel(msg, hdr);
|
|
return err;
|
|
}
|
|
|
|
static int devlink_nl_cmd_info_get_doit(struct sk_buff *skb,
|
|
struct genl_info *info)
|
|
{
|
|
struct devlink *devlink = info->user_ptr[0];
|
|
struct sk_buff *msg;
|
|
int err;
|
|
|
|
if (!devlink->ops->info_get)
|
|
return -EOPNOTSUPP;
|
|
|
|
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
|
|
if (!msg)
|
|
return -ENOMEM;
|
|
|
|
err = devlink_nl_info_fill(msg, devlink, DEVLINK_CMD_INFO_GET,
|
|
info->snd_portid, info->snd_seq, 0,
|
|
info->extack);
|
|
if (err) {
|
|
nlmsg_free(msg);
|
|
return err;
|
|
}
|
|
|
|
return genlmsg_reply(msg, info);
|
|
}
|
|
|
|
static int devlink_nl_cmd_info_get_dumpit(struct sk_buff *msg,
|
|
struct netlink_callback *cb)
|
|
{
|
|
struct devlink *devlink;
|
|
int start = cb->args[0];
|
|
unsigned long index;
|
|
int idx = 0;
|
|
int err = 0;
|
|
|
|
mutex_lock(&devlink_mutex);
|
|
xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) {
|
|
if (!devlink_try_get(devlink))
|
|
continue;
|
|
|
|
if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
|
|
goto retry;
|
|
|
|
if (idx < start || !devlink->ops->info_get)
|
|
goto inc;
|
|
|
|
mutex_lock(&devlink->lock);
|
|
err = devlink_nl_info_fill(msg, devlink, DEVLINK_CMD_INFO_GET,
|
|
NETLINK_CB(cb->skb).portid,
|
|
cb->nlh->nlmsg_seq, NLM_F_MULTI,
|
|
cb->extack);
|
|
mutex_unlock(&devlink->lock);
|
|
if (err == -EOPNOTSUPP)
|
|
err = 0;
|
|
else if (err) {
|
|
devlink_put(devlink);
|
|
break;
|
|
}
|
|
inc:
|
|
idx++;
|
|
retry:
|
|
devlink_put(devlink);
|
|
}
|
|
mutex_unlock(&devlink_mutex);
|
|
|
|
if (err != -EMSGSIZE)
|
|
return err;
|
|
|
|
cb->args[0] = idx;
|
|
return msg->len;
|
|
}
|
|
|
|
struct devlink_fmsg_item {
|
|
struct list_head list;
|
|
int attrtype;
|
|
u8 nla_type;
|
|
u16 len;
|
|
int value[];
|
|
};
|
|
|
|
struct devlink_fmsg {
|
|
struct list_head item_list;
|
|
bool putting_binary; /* This flag forces enclosing of binary data
|
|
* in an array brackets. It forces using
|
|
* of designated API:
|
|
* devlink_fmsg_binary_pair_nest_start()
|
|
* devlink_fmsg_binary_pair_nest_end()
|
|
*/
|
|
};
|
|
|
|
static struct devlink_fmsg *devlink_fmsg_alloc(void)
|
|
{
|
|
struct devlink_fmsg *fmsg;
|
|
|
|
fmsg = kzalloc(sizeof(*fmsg), GFP_KERNEL);
|
|
if (!fmsg)
|
|
return NULL;
|
|
|
|
INIT_LIST_HEAD(&fmsg->item_list);
|
|
|
|
return fmsg;
|
|
}
|
|
|
|
static void devlink_fmsg_free(struct devlink_fmsg *fmsg)
|
|
{
|
|
struct devlink_fmsg_item *item, *tmp;
|
|
|
|
list_for_each_entry_safe(item, tmp, &fmsg->item_list, list) {
|
|
list_del(&item->list);
|
|
kfree(item);
|
|
}
|
|
kfree(fmsg);
|
|
}
|
|
|
|
static int devlink_fmsg_nest_common(struct devlink_fmsg *fmsg,
|
|
int attrtype)
|
|
{
|
|
struct devlink_fmsg_item *item;
|
|
|
|
item = kzalloc(sizeof(*item), GFP_KERNEL);
|
|
if (!item)
|
|
return -ENOMEM;
|
|
|
|
item->attrtype = attrtype;
|
|
list_add_tail(&item->list, &fmsg->item_list);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int devlink_fmsg_obj_nest_start(struct devlink_fmsg *fmsg)
|
|
{
|
|
if (fmsg->putting_binary)
|
|
return -EINVAL;
|
|
|
|
return devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_OBJ_NEST_START);
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_fmsg_obj_nest_start);
|
|
|
|
static int devlink_fmsg_nest_end(struct devlink_fmsg *fmsg)
|
|
{
|
|
if (fmsg->putting_binary)
|
|
return -EINVAL;
|
|
|
|
return devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_NEST_END);
|
|
}
|
|
|
|
int devlink_fmsg_obj_nest_end(struct devlink_fmsg *fmsg)
|
|
{
|
|
if (fmsg->putting_binary)
|
|
return -EINVAL;
|
|
|
|
return devlink_fmsg_nest_end(fmsg);
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_fmsg_obj_nest_end);
|
|
|
|
#define DEVLINK_FMSG_MAX_SIZE (GENLMSG_DEFAULT_SIZE - GENL_HDRLEN - NLA_HDRLEN)
|
|
|
|
static int devlink_fmsg_put_name(struct devlink_fmsg *fmsg, const char *name)
|
|
{
|
|
struct devlink_fmsg_item *item;
|
|
|
|
if (fmsg->putting_binary)
|
|
return -EINVAL;
|
|
|
|
if (strlen(name) + 1 > DEVLINK_FMSG_MAX_SIZE)
|
|
return -EMSGSIZE;
|
|
|
|
item = kzalloc(sizeof(*item) + strlen(name) + 1, GFP_KERNEL);
|
|
if (!item)
|
|
return -ENOMEM;
|
|
|
|
item->nla_type = NLA_NUL_STRING;
|
|
item->len = strlen(name) + 1;
|
|
item->attrtype = DEVLINK_ATTR_FMSG_OBJ_NAME;
|
|
memcpy(&item->value, name, item->len);
|
|
list_add_tail(&item->list, &fmsg->item_list);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int devlink_fmsg_pair_nest_start(struct devlink_fmsg *fmsg, const char *name)
|
|
{
|
|
int err;
|
|
|
|
if (fmsg->putting_binary)
|
|
return -EINVAL;
|
|
|
|
err = devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_PAIR_NEST_START);
|
|
if (err)
|
|
return err;
|
|
|
|
err = devlink_fmsg_put_name(fmsg, name);
|
|
if (err)
|
|
return err;
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_fmsg_pair_nest_start);
|
|
|
|
int devlink_fmsg_pair_nest_end(struct devlink_fmsg *fmsg)
|
|
{
|
|
if (fmsg->putting_binary)
|
|
return -EINVAL;
|
|
|
|
return devlink_fmsg_nest_end(fmsg);
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_fmsg_pair_nest_end);
|
|
|
|
int devlink_fmsg_arr_pair_nest_start(struct devlink_fmsg *fmsg,
|
|
const char *name)
|
|
{
|
|
int err;
|
|
|
|
if (fmsg->putting_binary)
|
|
return -EINVAL;
|
|
|
|
err = devlink_fmsg_pair_nest_start(fmsg, name);
|
|
if (err)
|
|
return err;
|
|
|
|
err = devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_ARR_NEST_START);
|
|
if (err)
|
|
return err;
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_fmsg_arr_pair_nest_start);
|
|
|
|
int devlink_fmsg_arr_pair_nest_end(struct devlink_fmsg *fmsg)
|
|
{
|
|
int err;
|
|
|
|
if (fmsg->putting_binary)
|
|
return -EINVAL;
|
|
|
|
err = devlink_fmsg_nest_end(fmsg);
|
|
if (err)
|
|
return err;
|
|
|
|
err = devlink_fmsg_nest_end(fmsg);
|
|
if (err)
|
|
return err;
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_fmsg_arr_pair_nest_end);
|
|
|
|
int devlink_fmsg_binary_pair_nest_start(struct devlink_fmsg *fmsg,
|
|
const char *name)
|
|
{
|
|
int err;
|
|
|
|
err = devlink_fmsg_arr_pair_nest_start(fmsg, name);
|
|
if (err)
|
|
return err;
|
|
|
|
fmsg->putting_binary = true;
|
|
return err;
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_fmsg_binary_pair_nest_start);
|
|
|
|
int devlink_fmsg_binary_pair_nest_end(struct devlink_fmsg *fmsg)
|
|
{
|
|
if (!fmsg->putting_binary)
|
|
return -EINVAL;
|
|
|
|
fmsg->putting_binary = false;
|
|
return devlink_fmsg_arr_pair_nest_end(fmsg);
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_fmsg_binary_pair_nest_end);
|
|
|
|
static int devlink_fmsg_put_value(struct devlink_fmsg *fmsg,
|
|
const void *value, u16 value_len,
|
|
u8 value_nla_type)
|
|
{
|
|
struct devlink_fmsg_item *item;
|
|
|
|
if (value_len > DEVLINK_FMSG_MAX_SIZE)
|
|
return -EMSGSIZE;
|
|
|
|
item = kzalloc(sizeof(*item) + value_len, GFP_KERNEL);
|
|
if (!item)
|
|
return -ENOMEM;
|
|
|
|
item->nla_type = value_nla_type;
|
|
item->len = value_len;
|
|
item->attrtype = DEVLINK_ATTR_FMSG_OBJ_VALUE_DATA;
|
|
memcpy(&item->value, value, item->len);
|
|
list_add_tail(&item->list, &fmsg->item_list);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int devlink_fmsg_bool_put(struct devlink_fmsg *fmsg, bool value)
|
|
{
|
|
if (fmsg->putting_binary)
|
|
return -EINVAL;
|
|
|
|
return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_FLAG);
|
|
}
|
|
|
|
static int devlink_fmsg_u8_put(struct devlink_fmsg *fmsg, u8 value)
|
|
{
|
|
if (fmsg->putting_binary)
|
|
return -EINVAL;
|
|
|
|
return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_U8);
|
|
}
|
|
|
|
int devlink_fmsg_u32_put(struct devlink_fmsg *fmsg, u32 value)
|
|
{
|
|
if (fmsg->putting_binary)
|
|
return -EINVAL;
|
|
|
|
return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_U32);
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_fmsg_u32_put);
|
|
|
|
static int devlink_fmsg_u64_put(struct devlink_fmsg *fmsg, u64 value)
|
|
{
|
|
if (fmsg->putting_binary)
|
|
return -EINVAL;
|
|
|
|
return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_U64);
|
|
}
|
|
|
|
int devlink_fmsg_string_put(struct devlink_fmsg *fmsg, const char *value)
|
|
{
|
|
if (fmsg->putting_binary)
|
|
return -EINVAL;
|
|
|
|
return devlink_fmsg_put_value(fmsg, value, strlen(value) + 1,
|
|
NLA_NUL_STRING);
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_fmsg_string_put);
|
|
|
|
int devlink_fmsg_binary_put(struct devlink_fmsg *fmsg, const void *value,
|
|
u16 value_len)
|
|
{
|
|
if (!fmsg->putting_binary)
|
|
return -EINVAL;
|
|
|
|
return devlink_fmsg_put_value(fmsg, value, value_len, NLA_BINARY);
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_fmsg_binary_put);
|
|
|
|
int devlink_fmsg_bool_pair_put(struct devlink_fmsg *fmsg, const char *name,
|
|
bool value)
|
|
{
|
|
int err;
|
|
|
|
err = devlink_fmsg_pair_nest_start(fmsg, name);
|
|
if (err)
|
|
return err;
|
|
|
|
err = devlink_fmsg_bool_put(fmsg, value);
|
|
if (err)
|
|
return err;
|
|
|
|
err = devlink_fmsg_pair_nest_end(fmsg);
|
|
if (err)
|
|
return err;
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_fmsg_bool_pair_put);
|
|
|
|
int devlink_fmsg_u8_pair_put(struct devlink_fmsg *fmsg, const char *name,
|
|
u8 value)
|
|
{
|
|
int err;
|
|
|
|
err = devlink_fmsg_pair_nest_start(fmsg, name);
|
|
if (err)
|
|
return err;
|
|
|
|
err = devlink_fmsg_u8_put(fmsg, value);
|
|
if (err)
|
|
return err;
|
|
|
|
err = devlink_fmsg_pair_nest_end(fmsg);
|
|
if (err)
|
|
return err;
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_fmsg_u8_pair_put);
|
|
|
|
int devlink_fmsg_u32_pair_put(struct devlink_fmsg *fmsg, const char *name,
|
|
u32 value)
|
|
{
|
|
int err;
|
|
|
|
err = devlink_fmsg_pair_nest_start(fmsg, name);
|
|
if (err)
|
|
return err;
|
|
|
|
err = devlink_fmsg_u32_put(fmsg, value);
|
|
if (err)
|
|
return err;
|
|
|
|
err = devlink_fmsg_pair_nest_end(fmsg);
|
|
if (err)
|
|
return err;
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_fmsg_u32_pair_put);
|
|
|
|
int devlink_fmsg_u64_pair_put(struct devlink_fmsg *fmsg, const char *name,
|
|
u64 value)
|
|
{
|
|
int err;
|
|
|
|
err = devlink_fmsg_pair_nest_start(fmsg, name);
|
|
if (err)
|
|
return err;
|
|
|
|
err = devlink_fmsg_u64_put(fmsg, value);
|
|
if (err)
|
|
return err;
|
|
|
|
err = devlink_fmsg_pair_nest_end(fmsg);
|
|
if (err)
|
|
return err;
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_fmsg_u64_pair_put);
|
|
|
|
int devlink_fmsg_string_pair_put(struct devlink_fmsg *fmsg, const char *name,
|
|
const char *value)
|
|
{
|
|
int err;
|
|
|
|
err = devlink_fmsg_pair_nest_start(fmsg, name);
|
|
if (err)
|
|
return err;
|
|
|
|
err = devlink_fmsg_string_put(fmsg, value);
|
|
if (err)
|
|
return err;
|
|
|
|
err = devlink_fmsg_pair_nest_end(fmsg);
|
|
if (err)
|
|
return err;
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_fmsg_string_pair_put);
|
|
|
|
int devlink_fmsg_binary_pair_put(struct devlink_fmsg *fmsg, const char *name,
|
|
const void *value, u32 value_len)
|
|
{
|
|
u32 data_size;
|
|
int end_err;
|
|
u32 offset;
|
|
int err;
|
|
|
|
err = devlink_fmsg_binary_pair_nest_start(fmsg, name);
|
|
if (err)
|
|
return err;
|
|
|
|
for (offset = 0; offset < value_len; offset += data_size) {
|
|
data_size = value_len - offset;
|
|
if (data_size > DEVLINK_FMSG_MAX_SIZE)
|
|
data_size = DEVLINK_FMSG_MAX_SIZE;
|
|
err = devlink_fmsg_binary_put(fmsg, value + offset, data_size);
|
|
if (err)
|
|
break;
|
|
/* Exit from loop with a break (instead of
|
|
* return) to make sure putting_binary is turned off in
|
|
* devlink_fmsg_binary_pair_nest_end
|
|
*/
|
|
}
|
|
|
|
end_err = devlink_fmsg_binary_pair_nest_end(fmsg);
|
|
if (end_err)
|
|
err = end_err;
|
|
|
|
return err;
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_fmsg_binary_pair_put);
|
|
|
|
static int
|
|
devlink_fmsg_item_fill_type(struct devlink_fmsg_item *msg, struct sk_buff *skb)
|
|
{
|
|
switch (msg->nla_type) {
|
|
case NLA_FLAG:
|
|
case NLA_U8:
|
|
case NLA_U32:
|
|
case NLA_U64:
|
|
case NLA_NUL_STRING:
|
|
case NLA_BINARY:
|
|
return nla_put_u8(skb, DEVLINK_ATTR_FMSG_OBJ_VALUE_TYPE,
|
|
msg->nla_type);
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
|
|
static int
|
|
devlink_fmsg_item_fill_data(struct devlink_fmsg_item *msg, struct sk_buff *skb)
|
|
{
|
|
int attrtype = DEVLINK_ATTR_FMSG_OBJ_VALUE_DATA;
|
|
u8 tmp;
|
|
|
|
switch (msg->nla_type) {
|
|
case NLA_FLAG:
|
|
/* Always provide flag data, regardless of its value */
|
|
tmp = *(bool *) msg->value;
|
|
|
|
return nla_put_u8(skb, attrtype, tmp);
|
|
case NLA_U8:
|
|
return nla_put_u8(skb, attrtype, *(u8 *) msg->value);
|
|
case NLA_U32:
|
|
return nla_put_u32(skb, attrtype, *(u32 *) msg->value);
|
|
case NLA_U64:
|
|
return nla_put_u64_64bit(skb, attrtype, *(u64 *) msg->value,
|
|
DEVLINK_ATTR_PAD);
|
|
case NLA_NUL_STRING:
|
|
return nla_put_string(skb, attrtype, (char *) &msg->value);
|
|
case NLA_BINARY:
|
|
return nla_put(skb, attrtype, msg->len, (void *) &msg->value);
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
|
|
static int
|
|
devlink_fmsg_prepare_skb(struct devlink_fmsg *fmsg, struct sk_buff *skb,
|
|
int *start)
|
|
{
|
|
struct devlink_fmsg_item *item;
|
|
struct nlattr *fmsg_nlattr;
|
|
int i = 0;
|
|
int err;
|
|
|
|
fmsg_nlattr = nla_nest_start_noflag(skb, DEVLINK_ATTR_FMSG);
|
|
if (!fmsg_nlattr)
|
|
return -EMSGSIZE;
|
|
|
|
list_for_each_entry(item, &fmsg->item_list, list) {
|
|
if (i < *start) {
|
|
i++;
|
|
continue;
|
|
}
|
|
|
|
switch (item->attrtype) {
|
|
case DEVLINK_ATTR_FMSG_OBJ_NEST_START:
|
|
case DEVLINK_ATTR_FMSG_PAIR_NEST_START:
|
|
case DEVLINK_ATTR_FMSG_ARR_NEST_START:
|
|
case DEVLINK_ATTR_FMSG_NEST_END:
|
|
err = nla_put_flag(skb, item->attrtype);
|
|
break;
|
|
case DEVLINK_ATTR_FMSG_OBJ_VALUE_DATA:
|
|
err = devlink_fmsg_item_fill_type(item, skb);
|
|
if (err)
|
|
break;
|
|
err = devlink_fmsg_item_fill_data(item, skb);
|
|
break;
|
|
case DEVLINK_ATTR_FMSG_OBJ_NAME:
|
|
err = nla_put_string(skb, item->attrtype,
|
|
(char *) &item->value);
|
|
break;
|
|
default:
|
|
err = -EINVAL;
|
|
break;
|
|
}
|
|
if (!err)
|
|
*start = ++i;
|
|
else
|
|
break;
|
|
}
|
|
|
|
nla_nest_end(skb, fmsg_nlattr);
|
|
return err;
|
|
}
|
|
|
|
static int devlink_fmsg_snd(struct devlink_fmsg *fmsg,
|
|
struct genl_info *info,
|
|
enum devlink_command cmd, int flags)
|
|
{
|
|
struct nlmsghdr *nlh;
|
|
struct sk_buff *skb;
|
|
bool last = false;
|
|
int index = 0;
|
|
void *hdr;
|
|
int err;
|
|
|
|
while (!last) {
|
|
int tmp_index = index;
|
|
|
|
skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
|
|
if (!skb)
|
|
return -ENOMEM;
|
|
|
|
hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq,
|
|
&devlink_nl_family, flags | NLM_F_MULTI, cmd);
|
|
if (!hdr) {
|
|
err = -EMSGSIZE;
|
|
goto nla_put_failure;
|
|
}
|
|
|
|
err = devlink_fmsg_prepare_skb(fmsg, skb, &index);
|
|
if (!err)
|
|
last = true;
|
|
else if (err != -EMSGSIZE || tmp_index == index)
|
|
goto nla_put_failure;
|
|
|
|
genlmsg_end(skb, hdr);
|
|
err = genlmsg_reply(skb, info);
|
|
if (err)
|
|
return err;
|
|
}
|
|
|
|
skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
|
|
if (!skb)
|
|
return -ENOMEM;
|
|
nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq,
|
|
NLMSG_DONE, 0, flags | NLM_F_MULTI);
|
|
if (!nlh) {
|
|
err = -EMSGSIZE;
|
|
goto nla_put_failure;
|
|
}
|
|
|
|
return genlmsg_reply(skb, info);
|
|
|
|
nla_put_failure:
|
|
nlmsg_free(skb);
|
|
return err;
|
|
}
|
|
|
|
static int devlink_fmsg_dumpit(struct devlink_fmsg *fmsg, struct sk_buff *skb,
|
|
struct netlink_callback *cb,
|
|
enum devlink_command cmd)
|
|
{
|
|
int index = cb->args[0];
|
|
int tmp_index = index;
|
|
void *hdr;
|
|
int err;
|
|
|
|
hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
|
|
&devlink_nl_family, NLM_F_ACK | NLM_F_MULTI, cmd);
|
|
if (!hdr) {
|
|
err = -EMSGSIZE;
|
|
goto nla_put_failure;
|
|
}
|
|
|
|
err = devlink_fmsg_prepare_skb(fmsg, skb, &index);
|
|
if ((err && err != -EMSGSIZE) || tmp_index == index)
|
|
goto nla_put_failure;
|
|
|
|
cb->args[0] = index;
|
|
genlmsg_end(skb, hdr);
|
|
return skb->len;
|
|
|
|
nla_put_failure:
|
|
genlmsg_cancel(skb, hdr);
|
|
return err;
|
|
}
|
|
|
|
struct devlink_health_reporter {
|
|
struct list_head list;
|
|
void *priv;
|
|
const struct devlink_health_reporter_ops *ops;
|
|
struct devlink *devlink;
|
|
struct devlink_port *devlink_port;
|
|
struct devlink_fmsg *dump_fmsg;
|
|
struct mutex dump_lock; /* lock parallel read/write from dump buffers */
|
|
u64 graceful_period;
|
|
bool auto_recover;
|
|
bool auto_dump;
|
|
u8 health_state;
|
|
u64 dump_ts;
|
|
u64 dump_real_ts;
|
|
u64 error_count;
|
|
u64 recovery_count;
|
|
u64 last_recovery_ts;
|
|
refcount_t refcount;
|
|
};
|
|
|
|
void *
|
|
devlink_health_reporter_priv(struct devlink_health_reporter *reporter)
|
|
{
|
|
return reporter->priv;
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_health_reporter_priv);
|
|
|
|
static struct devlink_health_reporter *
|
|
__devlink_health_reporter_find_by_name(struct list_head *reporter_list,
|
|
struct mutex *list_lock,
|
|
const char *reporter_name)
|
|
{
|
|
struct devlink_health_reporter *reporter;
|
|
|
|
lockdep_assert_held(list_lock);
|
|
list_for_each_entry(reporter, reporter_list, list)
|
|
if (!strcmp(reporter->ops->name, reporter_name))
|
|
return reporter;
|
|
return NULL;
|
|
}
|
|
|
|
static struct devlink_health_reporter *
|
|
devlink_health_reporter_find_by_name(struct devlink *devlink,
|
|
const char *reporter_name)
|
|
{
|
|
return __devlink_health_reporter_find_by_name(&devlink->reporter_list,
|
|
&devlink->reporters_lock,
|
|
reporter_name);
|
|
}
|
|
|
|
static struct devlink_health_reporter *
|
|
devlink_port_health_reporter_find_by_name(struct devlink_port *devlink_port,
|
|
const char *reporter_name)
|
|
{
|
|
return __devlink_health_reporter_find_by_name(&devlink_port->reporter_list,
|
|
&devlink_port->reporters_lock,
|
|
reporter_name);
|
|
}
|
|
|
|
static struct devlink_health_reporter *
|
|
__devlink_health_reporter_create(struct devlink *devlink,
|
|
const struct devlink_health_reporter_ops *ops,
|
|
u64 graceful_period, void *priv)
|
|
{
|
|
struct devlink_health_reporter *reporter;
|
|
|
|
if (WARN_ON(graceful_period && !ops->recover))
|
|
return ERR_PTR(-EINVAL);
|
|
|
|
reporter = kzalloc(sizeof(*reporter), GFP_KERNEL);
|
|
if (!reporter)
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
reporter->priv = priv;
|
|
reporter->ops = ops;
|
|
reporter->devlink = devlink;
|
|
reporter->graceful_period = graceful_period;
|
|
reporter->auto_recover = !!ops->recover;
|
|
reporter->auto_dump = !!ops->dump;
|
|
mutex_init(&reporter->dump_lock);
|
|
refcount_set(&reporter->refcount, 1);
|
|
return reporter;
|
|
}
|
|
|
|
/**
|
|
* devlink_port_health_reporter_create - create devlink health reporter for
|
|
* specified port instance
|
|
*
|
|
* @port: devlink_port which should contain the new reporter
|
|
* @ops: ops
|
|
* @graceful_period: to avoid recovery loops, in msecs
|
|
* @priv: priv
|
|
*/
|
|
struct devlink_health_reporter *
|
|
devlink_port_health_reporter_create(struct devlink_port *port,
|
|
const struct devlink_health_reporter_ops *ops,
|
|
u64 graceful_period, void *priv)
|
|
{
|
|
struct devlink_health_reporter *reporter;
|
|
|
|
mutex_lock(&port->reporters_lock);
|
|
if (__devlink_health_reporter_find_by_name(&port->reporter_list,
|
|
&port->reporters_lock, ops->name)) {
|
|
reporter = ERR_PTR(-EEXIST);
|
|
goto unlock;
|
|
}
|
|
|
|
reporter = __devlink_health_reporter_create(port->devlink, ops,
|
|
graceful_period, priv);
|
|
if (IS_ERR(reporter))
|
|
goto unlock;
|
|
|
|
reporter->devlink_port = port;
|
|
list_add_tail(&reporter->list, &port->reporter_list);
|
|
unlock:
|
|
mutex_unlock(&port->reporters_lock);
|
|
return reporter;
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_port_health_reporter_create);
|
|
|
|
/**
|
|
* devlink_health_reporter_create - create devlink health reporter
|
|
*
|
|
* @devlink: devlink
|
|
* @ops: ops
|
|
* @graceful_period: to avoid recovery loops, in msecs
|
|
* @priv: priv
|
|
*/
|
|
struct devlink_health_reporter *
|
|
devlink_health_reporter_create(struct devlink *devlink,
|
|
const struct devlink_health_reporter_ops *ops,
|
|
u64 graceful_period, void *priv)
|
|
{
|
|
struct devlink_health_reporter *reporter;
|
|
|
|
mutex_lock(&devlink->reporters_lock);
|
|
if (devlink_health_reporter_find_by_name(devlink, ops->name)) {
|
|
reporter = ERR_PTR(-EEXIST);
|
|
goto unlock;
|
|
}
|
|
|
|
reporter = __devlink_health_reporter_create(devlink, ops,
|
|
graceful_period, priv);
|
|
if (IS_ERR(reporter))
|
|
goto unlock;
|
|
|
|
list_add_tail(&reporter->list, &devlink->reporter_list);
|
|
unlock:
|
|
mutex_unlock(&devlink->reporters_lock);
|
|
return reporter;
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_health_reporter_create);
|
|
|
|
static void
|
|
devlink_health_reporter_free(struct devlink_health_reporter *reporter)
|
|
{
|
|
mutex_destroy(&reporter->dump_lock);
|
|
if (reporter->dump_fmsg)
|
|
devlink_fmsg_free(reporter->dump_fmsg);
|
|
kfree(reporter);
|
|
}
|
|
|
|
static void
|
|
devlink_health_reporter_put(struct devlink_health_reporter *reporter)
|
|
{
|
|
if (refcount_dec_and_test(&reporter->refcount))
|
|
devlink_health_reporter_free(reporter);
|
|
}
|
|
|
|
static void
|
|
__devlink_health_reporter_destroy(struct devlink_health_reporter *reporter)
|
|
{
|
|
list_del(&reporter->list);
|
|
devlink_health_reporter_put(reporter);
|
|
}
|
|
|
|
/**
|
|
* devlink_health_reporter_destroy - destroy devlink health reporter
|
|
*
|
|
* @reporter: devlink health reporter to destroy
|
|
*/
|
|
void
|
|
devlink_health_reporter_destroy(struct devlink_health_reporter *reporter)
|
|
{
|
|
struct mutex *lock = &reporter->devlink->reporters_lock;
|
|
|
|
mutex_lock(lock);
|
|
__devlink_health_reporter_destroy(reporter);
|
|
mutex_unlock(lock);
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_health_reporter_destroy);
|
|
|
|
/**
|
|
* devlink_port_health_reporter_destroy - destroy devlink port health reporter
|
|
*
|
|
* @reporter: devlink health reporter to destroy
|
|
*/
|
|
void
|
|
devlink_port_health_reporter_destroy(struct devlink_health_reporter *reporter)
|
|
{
|
|
struct mutex *lock = &reporter->devlink_port->reporters_lock;
|
|
|
|
mutex_lock(lock);
|
|
__devlink_health_reporter_destroy(reporter);
|
|
mutex_unlock(lock);
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_port_health_reporter_destroy);
|
|
|
|
static int
|
|
devlink_nl_health_reporter_fill(struct sk_buff *msg,
|
|
struct devlink_health_reporter *reporter,
|
|
enum devlink_command cmd, u32 portid,
|
|
u32 seq, int flags)
|
|
{
|
|
struct devlink *devlink = reporter->devlink;
|
|
struct nlattr *reporter_attr;
|
|
void *hdr;
|
|
|
|
hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
|
|
if (!hdr)
|
|
return -EMSGSIZE;
|
|
|
|
if (devlink_nl_put_handle(msg, devlink))
|
|
goto genlmsg_cancel;
|
|
|
|
if (reporter->devlink_port) {
|
|
if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, reporter->devlink_port->index))
|
|
goto genlmsg_cancel;
|
|
}
|
|
reporter_attr = nla_nest_start_noflag(msg,
|
|
DEVLINK_ATTR_HEALTH_REPORTER);
|
|
if (!reporter_attr)
|
|
goto genlmsg_cancel;
|
|
if (nla_put_string(msg, DEVLINK_ATTR_HEALTH_REPORTER_NAME,
|
|
reporter->ops->name))
|
|
goto reporter_nest_cancel;
|
|
if (nla_put_u8(msg, DEVLINK_ATTR_HEALTH_REPORTER_STATE,
|
|
reporter->health_state))
|
|
goto reporter_nest_cancel;
|
|
if (nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_ERR_COUNT,
|
|
reporter->error_count, DEVLINK_ATTR_PAD))
|
|
goto reporter_nest_cancel;
|
|
if (nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_RECOVER_COUNT,
|
|
reporter->recovery_count, DEVLINK_ATTR_PAD))
|
|
goto reporter_nest_cancel;
|
|
if (reporter->ops->recover &&
|
|
nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD,
|
|
reporter->graceful_period,
|
|
DEVLINK_ATTR_PAD))
|
|
goto reporter_nest_cancel;
|
|
if (reporter->ops->recover &&
|
|
nla_put_u8(msg, DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER,
|
|
reporter->auto_recover))
|
|
goto reporter_nest_cancel;
|
|
if (reporter->dump_fmsg &&
|
|
nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_DUMP_TS,
|
|
jiffies_to_msecs(reporter->dump_ts),
|
|
DEVLINK_ATTR_PAD))
|
|
goto reporter_nest_cancel;
|
|
if (reporter->dump_fmsg &&
|
|
nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_DUMP_TS_NS,
|
|
reporter->dump_real_ts, DEVLINK_ATTR_PAD))
|
|
goto reporter_nest_cancel;
|
|
if (reporter->ops->dump &&
|
|
nla_put_u8(msg, DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP,
|
|
reporter->auto_dump))
|
|
goto reporter_nest_cancel;
|
|
|
|
nla_nest_end(msg, reporter_attr);
|
|
genlmsg_end(msg, hdr);
|
|
return 0;
|
|
|
|
reporter_nest_cancel:
|
|
nla_nest_end(msg, reporter_attr);
|
|
genlmsg_cancel:
|
|
genlmsg_cancel(msg, hdr);
|
|
return -EMSGSIZE;
|
|
}
|
|
|
|
static void devlink_recover_notify(struct devlink_health_reporter *reporter,
|
|
enum devlink_command cmd)
|
|
{
|
|
struct devlink *devlink = reporter->devlink;
|
|
struct sk_buff *msg;
|
|
int err;
|
|
|
|
WARN_ON(cmd != DEVLINK_CMD_HEALTH_REPORTER_RECOVER);
|
|
WARN_ON(!xa_get_mark(&devlinks, devlink->index, DEVLINK_REGISTERED));
|
|
|
|
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
|
|
if (!msg)
|
|
return;
|
|
|
|
err = devlink_nl_health_reporter_fill(msg, reporter, cmd, 0, 0, 0);
|
|
if (err) {
|
|
nlmsg_free(msg);
|
|
return;
|
|
}
|
|
|
|
genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink), msg,
|
|
0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
|
|
}
|
|
|
|
void
|
|
devlink_health_reporter_recovery_done(struct devlink_health_reporter *reporter)
|
|
{
|
|
reporter->recovery_count++;
|
|
reporter->last_recovery_ts = jiffies;
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_health_reporter_recovery_done);
|
|
|
|
static int
|
|
devlink_health_reporter_recover(struct devlink_health_reporter *reporter,
|
|
void *priv_ctx, struct netlink_ext_ack *extack)
|
|
{
|
|
int err;
|
|
|
|
if (reporter->health_state == DEVLINK_HEALTH_REPORTER_STATE_HEALTHY)
|
|
return 0;
|
|
|
|
if (!reporter->ops->recover)
|
|
return -EOPNOTSUPP;
|
|
|
|
err = reporter->ops->recover(reporter, priv_ctx, extack);
|
|
if (err)
|
|
return err;
|
|
|
|
devlink_health_reporter_recovery_done(reporter);
|
|
reporter->health_state = DEVLINK_HEALTH_REPORTER_STATE_HEALTHY;
|
|
devlink_recover_notify(reporter, DEVLINK_CMD_HEALTH_REPORTER_RECOVER);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
devlink_health_dump_clear(struct devlink_health_reporter *reporter)
|
|
{
|
|
if (!reporter->dump_fmsg)
|
|
return;
|
|
devlink_fmsg_free(reporter->dump_fmsg);
|
|
reporter->dump_fmsg = NULL;
|
|
}
|
|
|
|
static int devlink_health_do_dump(struct devlink_health_reporter *reporter,
|
|
void *priv_ctx,
|
|
struct netlink_ext_ack *extack)
|
|
{
|
|
int err;
|
|
|
|
if (!reporter->ops->dump)
|
|
return 0;
|
|
|
|
if (reporter->dump_fmsg)
|
|
return 0;
|
|
|
|
reporter->dump_fmsg = devlink_fmsg_alloc();
|
|
if (!reporter->dump_fmsg) {
|
|
err = -ENOMEM;
|
|
return err;
|
|
}
|
|
|
|
err = devlink_fmsg_obj_nest_start(reporter->dump_fmsg);
|
|
if (err)
|
|
goto dump_err;
|
|
|
|
err = reporter->ops->dump(reporter, reporter->dump_fmsg,
|
|
priv_ctx, extack);
|
|
if (err)
|
|
goto dump_err;
|
|
|
|
err = devlink_fmsg_obj_nest_end(reporter->dump_fmsg);
|
|
if (err)
|
|
goto dump_err;
|
|
|
|
reporter->dump_ts = jiffies;
|
|
reporter->dump_real_ts = ktime_get_real_ns();
|
|
|
|
return 0;
|
|
|
|
dump_err:
|
|
devlink_health_dump_clear(reporter);
|
|
return err;
|
|
}
|
|
|
|
int devlink_health_report(struct devlink_health_reporter *reporter,
|
|
const char *msg, void *priv_ctx)
|
|
{
|
|
enum devlink_health_reporter_state prev_health_state;
|
|
struct devlink *devlink = reporter->devlink;
|
|
unsigned long recover_ts_threshold;
|
|
|
|
/* write a log message of the current error */
|
|
WARN_ON(!msg);
|
|
trace_devlink_health_report(devlink, reporter->ops->name, msg);
|
|
reporter->error_count++;
|
|
prev_health_state = reporter->health_state;
|
|
reporter->health_state = DEVLINK_HEALTH_REPORTER_STATE_ERROR;
|
|
devlink_recover_notify(reporter, DEVLINK_CMD_HEALTH_REPORTER_RECOVER);
|
|
|
|
/* abort if the previous error wasn't recovered */
|
|
recover_ts_threshold = reporter->last_recovery_ts +
|
|
msecs_to_jiffies(reporter->graceful_period);
|
|
if (reporter->auto_recover &&
|
|
(prev_health_state != DEVLINK_HEALTH_REPORTER_STATE_HEALTHY ||
|
|
(reporter->last_recovery_ts && reporter->recovery_count &&
|
|
time_is_after_jiffies(recover_ts_threshold)))) {
|
|
trace_devlink_health_recover_aborted(devlink,
|
|
reporter->ops->name,
|
|
reporter->health_state,
|
|
jiffies -
|
|
reporter->last_recovery_ts);
|
|
return -ECANCELED;
|
|
}
|
|
|
|
reporter->health_state = DEVLINK_HEALTH_REPORTER_STATE_ERROR;
|
|
|
|
if (reporter->auto_dump) {
|
|
mutex_lock(&reporter->dump_lock);
|
|
/* store current dump of current error, for later analysis */
|
|
devlink_health_do_dump(reporter, priv_ctx, NULL);
|
|
mutex_unlock(&reporter->dump_lock);
|
|
}
|
|
|
|
if (reporter->auto_recover)
|
|
return devlink_health_reporter_recover(reporter,
|
|
priv_ctx, NULL);
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_health_report);
|
|
|
|
static struct devlink_health_reporter *
|
|
devlink_health_reporter_get_from_attrs(struct devlink *devlink,
|
|
struct nlattr **attrs)
|
|
{
|
|
struct devlink_health_reporter *reporter;
|
|
struct devlink_port *devlink_port;
|
|
char *reporter_name;
|
|
|
|
if (!attrs[DEVLINK_ATTR_HEALTH_REPORTER_NAME])
|
|
return NULL;
|
|
|
|
reporter_name = nla_data(attrs[DEVLINK_ATTR_HEALTH_REPORTER_NAME]);
|
|
devlink_port = devlink_port_get_from_attrs(devlink, attrs);
|
|
if (IS_ERR(devlink_port)) {
|
|
mutex_lock(&devlink->reporters_lock);
|
|
reporter = devlink_health_reporter_find_by_name(devlink, reporter_name);
|
|
if (reporter)
|
|
refcount_inc(&reporter->refcount);
|
|
mutex_unlock(&devlink->reporters_lock);
|
|
} else {
|
|
mutex_lock(&devlink_port->reporters_lock);
|
|
reporter = devlink_port_health_reporter_find_by_name(devlink_port, reporter_name);
|
|
if (reporter)
|
|
refcount_inc(&reporter->refcount);
|
|
mutex_unlock(&devlink_port->reporters_lock);
|
|
}
|
|
|
|
return reporter;
|
|
}
|
|
|
|
static struct devlink_health_reporter *
|
|
devlink_health_reporter_get_from_info(struct devlink *devlink,
|
|
struct genl_info *info)
|
|
{
|
|
return devlink_health_reporter_get_from_attrs(devlink, info->attrs);
|
|
}
|
|
|
|
static struct devlink_health_reporter *
|
|
devlink_health_reporter_get_from_cb(struct netlink_callback *cb)
|
|
{
|
|
const struct genl_dumpit_info *info = genl_dumpit_info(cb);
|
|
struct devlink_health_reporter *reporter;
|
|
struct nlattr **attrs = info->attrs;
|
|
struct devlink *devlink;
|
|
|
|
mutex_lock(&devlink_mutex);
|
|
devlink = devlink_get_from_attrs(sock_net(cb->skb->sk), attrs);
|
|
if (IS_ERR(devlink))
|
|
goto unlock;
|
|
|
|
reporter = devlink_health_reporter_get_from_attrs(devlink, attrs);
|
|
devlink_put(devlink);
|
|
mutex_unlock(&devlink_mutex);
|
|
return reporter;
|
|
unlock:
|
|
mutex_unlock(&devlink_mutex);
|
|
return NULL;
|
|
}
|
|
|
|
void
|
|
devlink_health_reporter_state_update(struct devlink_health_reporter *reporter,
|
|
enum devlink_health_reporter_state state)
|
|
{
|
|
if (WARN_ON(state != DEVLINK_HEALTH_REPORTER_STATE_HEALTHY &&
|
|
state != DEVLINK_HEALTH_REPORTER_STATE_ERROR))
|
|
return;
|
|
|
|
if (reporter->health_state == state)
|
|
return;
|
|
|
|
reporter->health_state = state;
|
|
trace_devlink_health_reporter_state_update(reporter->devlink,
|
|
reporter->ops->name, state);
|
|
devlink_recover_notify(reporter, DEVLINK_CMD_HEALTH_REPORTER_RECOVER);
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_health_reporter_state_update);
|
|
|
|
static int devlink_nl_cmd_health_reporter_get_doit(struct sk_buff *skb,
|
|
struct genl_info *info)
|
|
{
|
|
struct devlink *devlink = info->user_ptr[0];
|
|
struct devlink_health_reporter *reporter;
|
|
struct sk_buff *msg;
|
|
int err;
|
|
|
|
reporter = devlink_health_reporter_get_from_info(devlink, info);
|
|
if (!reporter)
|
|
return -EINVAL;
|
|
|
|
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
|
|
if (!msg) {
|
|
err = -ENOMEM;
|
|
goto out;
|
|
}
|
|
|
|
err = devlink_nl_health_reporter_fill(msg, reporter,
|
|
DEVLINK_CMD_HEALTH_REPORTER_GET,
|
|
info->snd_portid, info->snd_seq,
|
|
0);
|
|
if (err) {
|
|
nlmsg_free(msg);
|
|
goto out;
|
|
}
|
|
|
|
err = genlmsg_reply(msg, info);
|
|
out:
|
|
devlink_health_reporter_put(reporter);
|
|
return err;
|
|
}
|
|
|
|
static int
|
|
devlink_nl_cmd_health_reporter_get_dumpit(struct sk_buff *msg,
|
|
struct netlink_callback *cb)
|
|
{
|
|
struct devlink_health_reporter *reporter;
|
|
struct devlink_port *port;
|
|
struct devlink *devlink;
|
|
int start = cb->args[0];
|
|
unsigned long index;
|
|
int idx = 0;
|
|
int err;
|
|
|
|
mutex_lock(&devlink_mutex);
|
|
xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) {
|
|
if (!devlink_try_get(devlink))
|
|
continue;
|
|
|
|
if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
|
|
goto retry_rep;
|
|
|
|
mutex_lock(&devlink->reporters_lock);
|
|
list_for_each_entry(reporter, &devlink->reporter_list,
|
|
list) {
|
|
if (idx < start) {
|
|
idx++;
|
|
continue;
|
|
}
|
|
err = devlink_nl_health_reporter_fill(
|
|
msg, reporter, DEVLINK_CMD_HEALTH_REPORTER_GET,
|
|
NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
|
|
NLM_F_MULTI);
|
|
if (err) {
|
|
mutex_unlock(&devlink->reporters_lock);
|
|
devlink_put(devlink);
|
|
goto out;
|
|
}
|
|
idx++;
|
|
}
|
|
mutex_unlock(&devlink->reporters_lock);
|
|
retry_rep:
|
|
devlink_put(devlink);
|
|
}
|
|
|
|
xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) {
|
|
if (!devlink_try_get(devlink))
|
|
continue;
|
|
|
|
if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
|
|
goto retry_port;
|
|
|
|
mutex_lock(&devlink->lock);
|
|
list_for_each_entry(port, &devlink->port_list, list) {
|
|
mutex_lock(&port->reporters_lock);
|
|
list_for_each_entry(reporter, &port->reporter_list, list) {
|
|
if (idx < start) {
|
|
idx++;
|
|
continue;
|
|
}
|
|
err = devlink_nl_health_reporter_fill(
|
|
msg, reporter,
|
|
DEVLINK_CMD_HEALTH_REPORTER_GET,
|
|
NETLINK_CB(cb->skb).portid,
|
|
cb->nlh->nlmsg_seq, NLM_F_MULTI);
|
|
if (err) {
|
|
mutex_unlock(&port->reporters_lock);
|
|
mutex_unlock(&devlink->lock);
|
|
devlink_put(devlink);
|
|
goto out;
|
|
}
|
|
idx++;
|
|
}
|
|
mutex_unlock(&port->reporters_lock);
|
|
}
|
|
mutex_unlock(&devlink->lock);
|
|
retry_port:
|
|
devlink_put(devlink);
|
|
}
|
|
out:
|
|
mutex_unlock(&devlink_mutex);
|
|
|
|
cb->args[0] = idx;
|
|
return msg->len;
|
|
}
|
|
|
|
static int
|
|
devlink_nl_cmd_health_reporter_set_doit(struct sk_buff *skb,
|
|
struct genl_info *info)
|
|
{
|
|
struct devlink *devlink = info->user_ptr[0];
|
|
struct devlink_health_reporter *reporter;
|
|
int err;
|
|
|
|
reporter = devlink_health_reporter_get_from_info(devlink, info);
|
|
if (!reporter)
|
|
return -EINVAL;
|
|
|
|
if (!reporter->ops->recover &&
|
|
(info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD] ||
|
|
info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER])) {
|
|
err = -EOPNOTSUPP;
|
|
goto out;
|
|
}
|
|
if (!reporter->ops->dump &&
|
|
info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP]) {
|
|
err = -EOPNOTSUPP;
|
|
goto out;
|
|
}
|
|
|
|
if (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD])
|
|
reporter->graceful_period =
|
|
nla_get_u64(info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD]);
|
|
|
|
if (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER])
|
|
reporter->auto_recover =
|
|
nla_get_u8(info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER]);
|
|
|
|
if (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP])
|
|
reporter->auto_dump =
|
|
nla_get_u8(info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP]);
|
|
|
|
devlink_health_reporter_put(reporter);
|
|
return 0;
|
|
out:
|
|
devlink_health_reporter_put(reporter);
|
|
return err;
|
|
}
|
|
|
|
static int devlink_nl_cmd_health_reporter_recover_doit(struct sk_buff *skb,
|
|
struct genl_info *info)
|
|
{
|
|
struct devlink *devlink = info->user_ptr[0];
|
|
struct devlink_health_reporter *reporter;
|
|
int err;
|
|
|
|
reporter = devlink_health_reporter_get_from_info(devlink, info);
|
|
if (!reporter)
|
|
return -EINVAL;
|
|
|
|
err = devlink_health_reporter_recover(reporter, NULL, info->extack);
|
|
|
|
devlink_health_reporter_put(reporter);
|
|
return err;
|
|
}
|
|
|
|
static int devlink_nl_cmd_health_reporter_diagnose_doit(struct sk_buff *skb,
|
|
struct genl_info *info)
|
|
{
|
|
struct devlink *devlink = info->user_ptr[0];
|
|
struct devlink_health_reporter *reporter;
|
|
struct devlink_fmsg *fmsg;
|
|
int err;
|
|
|
|
reporter = devlink_health_reporter_get_from_info(devlink, info);
|
|
if (!reporter)
|
|
return -EINVAL;
|
|
|
|
if (!reporter->ops->diagnose) {
|
|
devlink_health_reporter_put(reporter);
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
fmsg = devlink_fmsg_alloc();
|
|
if (!fmsg) {
|
|
devlink_health_reporter_put(reporter);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
err = devlink_fmsg_obj_nest_start(fmsg);
|
|
if (err)
|
|
goto out;
|
|
|
|
err = reporter->ops->diagnose(reporter, fmsg, info->extack);
|
|
if (err)
|
|
goto out;
|
|
|
|
err = devlink_fmsg_obj_nest_end(fmsg);
|
|
if (err)
|
|
goto out;
|
|
|
|
err = devlink_fmsg_snd(fmsg, info,
|
|
DEVLINK_CMD_HEALTH_REPORTER_DIAGNOSE, 0);
|
|
|
|
out:
|
|
devlink_fmsg_free(fmsg);
|
|
devlink_health_reporter_put(reporter);
|
|
return err;
|
|
}
|
|
|
|
static int
|
|
devlink_nl_cmd_health_reporter_dump_get_dumpit(struct sk_buff *skb,
|
|
struct netlink_callback *cb)
|
|
{
|
|
struct devlink_health_reporter *reporter;
|
|
u64 start = cb->args[0];
|
|
int err;
|
|
|
|
reporter = devlink_health_reporter_get_from_cb(cb);
|
|
if (!reporter)
|
|
return -EINVAL;
|
|
|
|
if (!reporter->ops->dump) {
|
|
err = -EOPNOTSUPP;
|
|
goto out;
|
|
}
|
|
mutex_lock(&reporter->dump_lock);
|
|
if (!start) {
|
|
err = devlink_health_do_dump(reporter, NULL, cb->extack);
|
|
if (err)
|
|
goto unlock;
|
|
cb->args[1] = reporter->dump_ts;
|
|
}
|
|
if (!reporter->dump_fmsg || cb->args[1] != reporter->dump_ts) {
|
|
NL_SET_ERR_MSG_MOD(cb->extack, "Dump trampled, please retry");
|
|
err = -EAGAIN;
|
|
goto unlock;
|
|
}
|
|
|
|
err = devlink_fmsg_dumpit(reporter->dump_fmsg, skb, cb,
|
|
DEVLINK_CMD_HEALTH_REPORTER_DUMP_GET);
|
|
unlock:
|
|
mutex_unlock(&reporter->dump_lock);
|
|
out:
|
|
devlink_health_reporter_put(reporter);
|
|
return err;
|
|
}
|
|
|
|
static int
|
|
devlink_nl_cmd_health_reporter_dump_clear_doit(struct sk_buff *skb,
|
|
struct genl_info *info)
|
|
{
|
|
struct devlink *devlink = info->user_ptr[0];
|
|
struct devlink_health_reporter *reporter;
|
|
|
|
reporter = devlink_health_reporter_get_from_info(devlink, info);
|
|
if (!reporter)
|
|
return -EINVAL;
|
|
|
|
if (!reporter->ops->dump) {
|
|
devlink_health_reporter_put(reporter);
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
mutex_lock(&reporter->dump_lock);
|
|
devlink_health_dump_clear(reporter);
|
|
mutex_unlock(&reporter->dump_lock);
|
|
devlink_health_reporter_put(reporter);
|
|
return 0;
|
|
}
|
|
|
|
static int devlink_nl_cmd_health_reporter_test_doit(struct sk_buff *skb,
|
|
struct genl_info *info)
|
|
{
|
|
struct devlink *devlink = info->user_ptr[0];
|
|
struct devlink_health_reporter *reporter;
|
|
int err;
|
|
|
|
reporter = devlink_health_reporter_get_from_info(devlink, info);
|
|
if (!reporter)
|
|
return -EINVAL;
|
|
|
|
if (!reporter->ops->test) {
|
|
devlink_health_reporter_put(reporter);
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
err = reporter->ops->test(reporter, info->extack);
|
|
|
|
devlink_health_reporter_put(reporter);
|
|
return err;
|
|
}
|
|
|
|
struct devlink_stats {
|
|
u64 rx_bytes;
|
|
u64 rx_packets;
|
|
struct u64_stats_sync syncp;
|
|
};
|
|
|
|
/**
|
|
* struct devlink_trap_policer_item - Packet trap policer attributes.
|
|
* @policer: Immutable packet trap policer attributes.
|
|
* @rate: Rate in packets / sec.
|
|
* @burst: Burst size in packets.
|
|
* @list: trap_policer_list member.
|
|
*
|
|
* Describes packet trap policer attributes. Created by devlink during trap
|
|
* policer registration.
|
|
*/
|
|
struct devlink_trap_policer_item {
|
|
const struct devlink_trap_policer *policer;
|
|
u64 rate;
|
|
u64 burst;
|
|
struct list_head list;
|
|
};
|
|
|
|
/**
|
|
* struct devlink_trap_group_item - Packet trap group attributes.
|
|
* @group: Immutable packet trap group attributes.
|
|
* @policer_item: Associated policer item. Can be NULL.
|
|
* @list: trap_group_list member.
|
|
* @stats: Trap group statistics.
|
|
*
|
|
* Describes packet trap group attributes. Created by devlink during trap
|
|
* group registration.
|
|
*/
|
|
struct devlink_trap_group_item {
|
|
const struct devlink_trap_group *group;
|
|
struct devlink_trap_policer_item *policer_item;
|
|
struct list_head list;
|
|
struct devlink_stats __percpu *stats;
|
|
};
|
|
|
|
/**
|
|
* struct devlink_trap_item - Packet trap attributes.
|
|
* @trap: Immutable packet trap attributes.
|
|
* @group_item: Associated group item.
|
|
* @list: trap_list member.
|
|
* @action: Trap action.
|
|
* @stats: Trap statistics.
|
|
* @priv: Driver private information.
|
|
*
|
|
* Describes both mutable and immutable packet trap attributes. Created by
|
|
* devlink during trap registration and used for all trap related operations.
|
|
*/
|
|
struct devlink_trap_item {
|
|
const struct devlink_trap *trap;
|
|
struct devlink_trap_group_item *group_item;
|
|
struct list_head list;
|
|
enum devlink_trap_action action;
|
|
struct devlink_stats __percpu *stats;
|
|
void *priv;
|
|
};
|
|
|
|
static struct devlink_trap_policer_item *
|
|
devlink_trap_policer_item_lookup(struct devlink *devlink, u32 id)
|
|
{
|
|
struct devlink_trap_policer_item *policer_item;
|
|
|
|
list_for_each_entry(policer_item, &devlink->trap_policer_list, list) {
|
|
if (policer_item->policer->id == id)
|
|
return policer_item;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static struct devlink_trap_item *
|
|
devlink_trap_item_lookup(struct devlink *devlink, const char *name)
|
|
{
|
|
struct devlink_trap_item *trap_item;
|
|
|
|
list_for_each_entry(trap_item, &devlink->trap_list, list) {
|
|
if (!strcmp(trap_item->trap->name, name))
|
|
return trap_item;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static struct devlink_trap_item *
|
|
devlink_trap_item_get_from_info(struct devlink *devlink,
|
|
struct genl_info *info)
|
|
{
|
|
struct nlattr *attr;
|
|
|
|
if (!info->attrs[DEVLINK_ATTR_TRAP_NAME])
|
|
return NULL;
|
|
attr = info->attrs[DEVLINK_ATTR_TRAP_NAME];
|
|
|
|
return devlink_trap_item_lookup(devlink, nla_data(attr));
|
|
}
|
|
|
|
static int
|
|
devlink_trap_action_get_from_info(struct genl_info *info,
|
|
enum devlink_trap_action *p_trap_action)
|
|
{
|
|
u8 val;
|
|
|
|
val = nla_get_u8(info->attrs[DEVLINK_ATTR_TRAP_ACTION]);
|
|
switch (val) {
|
|
case DEVLINK_TRAP_ACTION_DROP:
|
|
case DEVLINK_TRAP_ACTION_TRAP:
|
|
case DEVLINK_TRAP_ACTION_MIRROR:
|
|
*p_trap_action = val;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int devlink_trap_metadata_put(struct sk_buff *msg,
|
|
const struct devlink_trap *trap)
|
|
{
|
|
struct nlattr *attr;
|
|
|
|
attr = nla_nest_start(msg, DEVLINK_ATTR_TRAP_METADATA);
|
|
if (!attr)
|
|
return -EMSGSIZE;
|
|
|
|
if ((trap->metadata_cap & DEVLINK_TRAP_METADATA_TYPE_F_IN_PORT) &&
|
|
nla_put_flag(msg, DEVLINK_ATTR_TRAP_METADATA_TYPE_IN_PORT))
|
|
goto nla_put_failure;
|
|
if ((trap->metadata_cap & DEVLINK_TRAP_METADATA_TYPE_F_FA_COOKIE) &&
|
|
nla_put_flag(msg, DEVLINK_ATTR_TRAP_METADATA_TYPE_FA_COOKIE))
|
|
goto nla_put_failure;
|
|
|
|
nla_nest_end(msg, attr);
|
|
|
|
return 0;
|
|
|
|
nla_put_failure:
|
|
nla_nest_cancel(msg, attr);
|
|
return -EMSGSIZE;
|
|
}
|
|
|
|
static void devlink_trap_stats_read(struct devlink_stats __percpu *trap_stats,
|
|
struct devlink_stats *stats)
|
|
{
|
|
int i;
|
|
|
|
memset(stats, 0, sizeof(*stats));
|
|
for_each_possible_cpu(i) {
|
|
struct devlink_stats *cpu_stats;
|
|
u64 rx_packets, rx_bytes;
|
|
unsigned int start;
|
|
|
|
cpu_stats = per_cpu_ptr(trap_stats, i);
|
|
do {
|
|
start = u64_stats_fetch_begin_irq(&cpu_stats->syncp);
|
|
rx_packets = cpu_stats->rx_packets;
|
|
rx_bytes = cpu_stats->rx_bytes;
|
|
} while (u64_stats_fetch_retry_irq(&cpu_stats->syncp, start));
|
|
|
|
stats->rx_packets += rx_packets;
|
|
stats->rx_bytes += rx_bytes;
|
|
}
|
|
}
|
|
|
|
static int
|
|
devlink_trap_group_stats_put(struct sk_buff *msg,
|
|
struct devlink_stats __percpu *trap_stats)
|
|
{
|
|
struct devlink_stats stats;
|
|
struct nlattr *attr;
|
|
|
|
devlink_trap_stats_read(trap_stats, &stats);
|
|
|
|
attr = nla_nest_start(msg, DEVLINK_ATTR_STATS);
|
|
if (!attr)
|
|
return -EMSGSIZE;
|
|
|
|
if (nla_put_u64_64bit(msg, DEVLINK_ATTR_STATS_RX_PACKETS,
|
|
stats.rx_packets, DEVLINK_ATTR_PAD))
|
|
goto nla_put_failure;
|
|
|
|
if (nla_put_u64_64bit(msg, DEVLINK_ATTR_STATS_RX_BYTES,
|
|
stats.rx_bytes, DEVLINK_ATTR_PAD))
|
|
goto nla_put_failure;
|
|
|
|
nla_nest_end(msg, attr);
|
|
|
|
return 0;
|
|
|
|
nla_put_failure:
|
|
nla_nest_cancel(msg, attr);
|
|
return -EMSGSIZE;
|
|
}
|
|
|
|
static int devlink_trap_stats_put(struct sk_buff *msg, struct devlink *devlink,
|
|
const struct devlink_trap_item *trap_item)
|
|
{
|
|
struct devlink_stats stats;
|
|
struct nlattr *attr;
|
|
u64 drops = 0;
|
|
int err;
|
|
|
|
if (devlink->ops->trap_drop_counter_get) {
|
|
err = devlink->ops->trap_drop_counter_get(devlink,
|
|
trap_item->trap,
|
|
&drops);
|
|
if (err)
|
|
return err;
|
|
}
|
|
|
|
devlink_trap_stats_read(trap_item->stats, &stats);
|
|
|
|
attr = nla_nest_start(msg, DEVLINK_ATTR_STATS);
|
|
if (!attr)
|
|
return -EMSGSIZE;
|
|
|
|
if (devlink->ops->trap_drop_counter_get &&
|
|
nla_put_u64_64bit(msg, DEVLINK_ATTR_STATS_RX_DROPPED, drops,
|
|
DEVLINK_ATTR_PAD))
|
|
goto nla_put_failure;
|
|
|
|
if (nla_put_u64_64bit(msg, DEVLINK_ATTR_STATS_RX_PACKETS,
|
|
stats.rx_packets, DEVLINK_ATTR_PAD))
|
|
goto nla_put_failure;
|
|
|
|
if (nla_put_u64_64bit(msg, DEVLINK_ATTR_STATS_RX_BYTES,
|
|
stats.rx_bytes, DEVLINK_ATTR_PAD))
|
|
goto nla_put_failure;
|
|
|
|
nla_nest_end(msg, attr);
|
|
|
|
return 0;
|
|
|
|
nla_put_failure:
|
|
nla_nest_cancel(msg, attr);
|
|
return -EMSGSIZE;
|
|
}
|
|
|
|
static int devlink_nl_trap_fill(struct sk_buff *msg, struct devlink *devlink,
|
|
const struct devlink_trap_item *trap_item,
|
|
enum devlink_command cmd, u32 portid, u32 seq,
|
|
int flags)
|
|
{
|
|
struct devlink_trap_group_item *group_item = trap_item->group_item;
|
|
void *hdr;
|
|
int err;
|
|
|
|
hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
|
|
if (!hdr)
|
|
return -EMSGSIZE;
|
|
|
|
if (devlink_nl_put_handle(msg, devlink))
|
|
goto nla_put_failure;
|
|
|
|
if (nla_put_string(msg, DEVLINK_ATTR_TRAP_GROUP_NAME,
|
|
group_item->group->name))
|
|
goto nla_put_failure;
|
|
|
|
if (nla_put_string(msg, DEVLINK_ATTR_TRAP_NAME, trap_item->trap->name))
|
|
goto nla_put_failure;
|
|
|
|
if (nla_put_u8(msg, DEVLINK_ATTR_TRAP_TYPE, trap_item->trap->type))
|
|
goto nla_put_failure;
|
|
|
|
if (trap_item->trap->generic &&
|
|
nla_put_flag(msg, DEVLINK_ATTR_TRAP_GENERIC))
|
|
goto nla_put_failure;
|
|
|
|
if (nla_put_u8(msg, DEVLINK_ATTR_TRAP_ACTION, trap_item->action))
|
|
goto nla_put_failure;
|
|
|
|
err = devlink_trap_metadata_put(msg, trap_item->trap);
|
|
if (err)
|
|
goto nla_put_failure;
|
|
|
|
err = devlink_trap_stats_put(msg, devlink, trap_item);
|
|
if (err)
|
|
goto nla_put_failure;
|
|
|
|
genlmsg_end(msg, hdr);
|
|
|
|
return 0;
|
|
|
|
nla_put_failure:
|
|
genlmsg_cancel(msg, hdr);
|
|
return -EMSGSIZE;
|
|
}
|
|
|
|
static int devlink_nl_cmd_trap_get_doit(struct sk_buff *skb,
|
|
struct genl_info *info)
|
|
{
|
|
struct netlink_ext_ack *extack = info->extack;
|
|
struct devlink *devlink = info->user_ptr[0];
|
|
struct devlink_trap_item *trap_item;
|
|
struct sk_buff *msg;
|
|
int err;
|
|
|
|
if (list_empty(&devlink->trap_list))
|
|
return -EOPNOTSUPP;
|
|
|
|
trap_item = devlink_trap_item_get_from_info(devlink, info);
|
|
if (!trap_item) {
|
|
NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap");
|
|
return -ENOENT;
|
|
}
|
|
|
|
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
|
|
if (!msg)
|
|
return -ENOMEM;
|
|
|
|
err = devlink_nl_trap_fill(msg, devlink, trap_item,
|
|
DEVLINK_CMD_TRAP_NEW, info->snd_portid,
|
|
info->snd_seq, 0);
|
|
if (err)
|
|
goto err_trap_fill;
|
|
|
|
return genlmsg_reply(msg, info);
|
|
|
|
err_trap_fill:
|
|
nlmsg_free(msg);
|
|
return err;
|
|
}
|
|
|
|
static int devlink_nl_cmd_trap_get_dumpit(struct sk_buff *msg,
|
|
struct netlink_callback *cb)
|
|
{
|
|
struct devlink_trap_item *trap_item;
|
|
struct devlink *devlink;
|
|
int start = cb->args[0];
|
|
unsigned long index;
|
|
int idx = 0;
|
|
int err;
|
|
|
|
mutex_lock(&devlink_mutex);
|
|
xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) {
|
|
if (!devlink_try_get(devlink))
|
|
continue;
|
|
|
|
if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
|
|
goto retry;
|
|
|
|
mutex_lock(&devlink->lock);
|
|
list_for_each_entry(trap_item, &devlink->trap_list, list) {
|
|
if (idx < start) {
|
|
idx++;
|
|
continue;
|
|
}
|
|
err = devlink_nl_trap_fill(msg, devlink, trap_item,
|
|
DEVLINK_CMD_TRAP_NEW,
|
|
NETLINK_CB(cb->skb).portid,
|
|
cb->nlh->nlmsg_seq,
|
|
NLM_F_MULTI);
|
|
if (err) {
|
|
mutex_unlock(&devlink->lock);
|
|
devlink_put(devlink);
|
|
goto out;
|
|
}
|
|
idx++;
|
|
}
|
|
mutex_unlock(&devlink->lock);
|
|
retry:
|
|
devlink_put(devlink);
|
|
}
|
|
out:
|
|
mutex_unlock(&devlink_mutex);
|
|
|
|
cb->args[0] = idx;
|
|
return msg->len;
|
|
}
|
|
|
|
static int __devlink_trap_action_set(struct devlink *devlink,
|
|
struct devlink_trap_item *trap_item,
|
|
enum devlink_trap_action trap_action,
|
|
struct netlink_ext_ack *extack)
|
|
{
|
|
int err;
|
|
|
|
if (trap_item->action != trap_action &&
|
|
trap_item->trap->type != DEVLINK_TRAP_TYPE_DROP) {
|
|
NL_SET_ERR_MSG_MOD(extack, "Cannot change action of non-drop traps. Skipping");
|
|
return 0;
|
|
}
|
|
|
|
err = devlink->ops->trap_action_set(devlink, trap_item->trap,
|
|
trap_action, extack);
|
|
if (err)
|
|
return err;
|
|
|
|
trap_item->action = trap_action;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int devlink_trap_action_set(struct devlink *devlink,
|
|
struct devlink_trap_item *trap_item,
|
|
struct genl_info *info)
|
|
{
|
|
enum devlink_trap_action trap_action;
|
|
int err;
|
|
|
|
if (!info->attrs[DEVLINK_ATTR_TRAP_ACTION])
|
|
return 0;
|
|
|
|
err = devlink_trap_action_get_from_info(info, &trap_action);
|
|
if (err) {
|
|
NL_SET_ERR_MSG_MOD(info->extack, "Invalid trap action");
|
|
return -EINVAL;
|
|
}
|
|
|
|
return __devlink_trap_action_set(devlink, trap_item, trap_action,
|
|
info->extack);
|
|
}
|
|
|
|
static int devlink_nl_cmd_trap_set_doit(struct sk_buff *skb,
|
|
struct genl_info *info)
|
|
{
|
|
struct netlink_ext_ack *extack = info->extack;
|
|
struct devlink *devlink = info->user_ptr[0];
|
|
struct devlink_trap_item *trap_item;
|
|
|
|
if (list_empty(&devlink->trap_list))
|
|
return -EOPNOTSUPP;
|
|
|
|
trap_item = devlink_trap_item_get_from_info(devlink, info);
|
|
if (!trap_item) {
|
|
NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap");
|
|
return -ENOENT;
|
|
}
|
|
|
|
return devlink_trap_action_set(devlink, trap_item, info);
|
|
}
|
|
|
|
static struct devlink_trap_group_item *
|
|
devlink_trap_group_item_lookup(struct devlink *devlink, const char *name)
|
|
{
|
|
struct devlink_trap_group_item *group_item;
|
|
|
|
list_for_each_entry(group_item, &devlink->trap_group_list, list) {
|
|
if (!strcmp(group_item->group->name, name))
|
|
return group_item;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static struct devlink_trap_group_item *
|
|
devlink_trap_group_item_lookup_by_id(struct devlink *devlink, u16 id)
|
|
{
|
|
struct devlink_trap_group_item *group_item;
|
|
|
|
list_for_each_entry(group_item, &devlink->trap_group_list, list) {
|
|
if (group_item->group->id == id)
|
|
return group_item;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static struct devlink_trap_group_item *
|
|
devlink_trap_group_item_get_from_info(struct devlink *devlink,
|
|
struct genl_info *info)
|
|
{
|
|
char *name;
|
|
|
|
if (!info->attrs[DEVLINK_ATTR_TRAP_GROUP_NAME])
|
|
return NULL;
|
|
name = nla_data(info->attrs[DEVLINK_ATTR_TRAP_GROUP_NAME]);
|
|
|
|
return devlink_trap_group_item_lookup(devlink, name);
|
|
}
|
|
|
|
static int
|
|
devlink_nl_trap_group_fill(struct sk_buff *msg, struct devlink *devlink,
|
|
const struct devlink_trap_group_item *group_item,
|
|
enum devlink_command cmd, u32 portid, u32 seq,
|
|
int flags)
|
|
{
|
|
void *hdr;
|
|
int err;
|
|
|
|
hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
|
|
if (!hdr)
|
|
return -EMSGSIZE;
|
|
|
|
if (devlink_nl_put_handle(msg, devlink))
|
|
goto nla_put_failure;
|
|
|
|
if (nla_put_string(msg, DEVLINK_ATTR_TRAP_GROUP_NAME,
|
|
group_item->group->name))
|
|
goto nla_put_failure;
|
|
|
|
if (group_item->group->generic &&
|
|
nla_put_flag(msg, DEVLINK_ATTR_TRAP_GENERIC))
|
|
goto nla_put_failure;
|
|
|
|
if (group_item->policer_item &&
|
|
nla_put_u32(msg, DEVLINK_ATTR_TRAP_POLICER_ID,
|
|
group_item->policer_item->policer->id))
|
|
goto nla_put_failure;
|
|
|
|
err = devlink_trap_group_stats_put(msg, group_item->stats);
|
|
if (err)
|
|
goto nla_put_failure;
|
|
|
|
genlmsg_end(msg, hdr);
|
|
|
|
return 0;
|
|
|
|
nla_put_failure:
|
|
genlmsg_cancel(msg, hdr);
|
|
return -EMSGSIZE;
|
|
}
|
|
|
|
static int devlink_nl_cmd_trap_group_get_doit(struct sk_buff *skb,
|
|
struct genl_info *info)
|
|
{
|
|
struct netlink_ext_ack *extack = info->extack;
|
|
struct devlink *devlink = info->user_ptr[0];
|
|
struct devlink_trap_group_item *group_item;
|
|
struct sk_buff *msg;
|
|
int err;
|
|
|
|
if (list_empty(&devlink->trap_group_list))
|
|
return -EOPNOTSUPP;
|
|
|
|
group_item = devlink_trap_group_item_get_from_info(devlink, info);
|
|
if (!group_item) {
|
|
NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap group");
|
|
return -ENOENT;
|
|
}
|
|
|
|
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
|
|
if (!msg)
|
|
return -ENOMEM;
|
|
|
|
err = devlink_nl_trap_group_fill(msg, devlink, group_item,
|
|
DEVLINK_CMD_TRAP_GROUP_NEW,
|
|
info->snd_portid, info->snd_seq, 0);
|
|
if (err)
|
|
goto err_trap_group_fill;
|
|
|
|
return genlmsg_reply(msg, info);
|
|
|
|
err_trap_group_fill:
|
|
nlmsg_free(msg);
|
|
return err;
|
|
}
|
|
|
|
static int devlink_nl_cmd_trap_group_get_dumpit(struct sk_buff *msg,
|
|
struct netlink_callback *cb)
|
|
{
|
|
enum devlink_command cmd = DEVLINK_CMD_TRAP_GROUP_NEW;
|
|
struct devlink_trap_group_item *group_item;
|
|
u32 portid = NETLINK_CB(cb->skb).portid;
|
|
struct devlink *devlink;
|
|
int start = cb->args[0];
|
|
unsigned long index;
|
|
int idx = 0;
|
|
int err;
|
|
|
|
mutex_lock(&devlink_mutex);
|
|
xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) {
|
|
if (!devlink_try_get(devlink))
|
|
continue;
|
|
|
|
if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
|
|
goto retry;
|
|
|
|
mutex_lock(&devlink->lock);
|
|
list_for_each_entry(group_item, &devlink->trap_group_list,
|
|
list) {
|
|
if (idx < start) {
|
|
idx++;
|
|
continue;
|
|
}
|
|
err = devlink_nl_trap_group_fill(msg, devlink,
|
|
group_item, cmd,
|
|
portid,
|
|
cb->nlh->nlmsg_seq,
|
|
NLM_F_MULTI);
|
|
if (err) {
|
|
mutex_unlock(&devlink->lock);
|
|
devlink_put(devlink);
|
|
goto out;
|
|
}
|
|
idx++;
|
|
}
|
|
mutex_unlock(&devlink->lock);
|
|
retry:
|
|
devlink_put(devlink);
|
|
}
|
|
out:
|
|
mutex_unlock(&devlink_mutex);
|
|
|
|
cb->args[0] = idx;
|
|
return msg->len;
|
|
}
|
|
|
|
static int
|
|
__devlink_trap_group_action_set(struct devlink *devlink,
|
|
struct devlink_trap_group_item *group_item,
|
|
enum devlink_trap_action trap_action,
|
|
struct netlink_ext_ack *extack)
|
|
{
|
|
const char *group_name = group_item->group->name;
|
|
struct devlink_trap_item *trap_item;
|
|
int err;
|
|
|
|
if (devlink->ops->trap_group_action_set) {
|
|
err = devlink->ops->trap_group_action_set(devlink, group_item->group,
|
|
trap_action, extack);
|
|
if (err)
|
|
return err;
|
|
|
|
list_for_each_entry(trap_item, &devlink->trap_list, list) {
|
|
if (strcmp(trap_item->group_item->group->name, group_name))
|
|
continue;
|
|
if (trap_item->action != trap_action &&
|
|
trap_item->trap->type != DEVLINK_TRAP_TYPE_DROP)
|
|
continue;
|
|
trap_item->action = trap_action;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
list_for_each_entry(trap_item, &devlink->trap_list, list) {
|
|
if (strcmp(trap_item->group_item->group->name, group_name))
|
|
continue;
|
|
err = __devlink_trap_action_set(devlink, trap_item,
|
|
trap_action, extack);
|
|
if (err)
|
|
return err;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
devlink_trap_group_action_set(struct devlink *devlink,
|
|
struct devlink_trap_group_item *group_item,
|
|
struct genl_info *info, bool *p_modified)
|
|
{
|
|
enum devlink_trap_action trap_action;
|
|
int err;
|
|
|
|
if (!info->attrs[DEVLINK_ATTR_TRAP_ACTION])
|
|
return 0;
|
|
|
|
err = devlink_trap_action_get_from_info(info, &trap_action);
|
|
if (err) {
|
|
NL_SET_ERR_MSG_MOD(info->extack, "Invalid trap action");
|
|
return -EINVAL;
|
|
}
|
|
|
|
err = __devlink_trap_group_action_set(devlink, group_item, trap_action,
|
|
info->extack);
|
|
if (err)
|
|
return err;
|
|
|
|
*p_modified = true;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int devlink_trap_group_set(struct devlink *devlink,
|
|
struct devlink_trap_group_item *group_item,
|
|
struct genl_info *info)
|
|
{
|
|
struct devlink_trap_policer_item *policer_item;
|
|
struct netlink_ext_ack *extack = info->extack;
|
|
const struct devlink_trap_policer *policer;
|
|
struct nlattr **attrs = info->attrs;
|
|
int err;
|
|
|
|
if (!attrs[DEVLINK_ATTR_TRAP_POLICER_ID])
|
|
return 0;
|
|
|
|
if (!devlink->ops->trap_group_set)
|
|
return -EOPNOTSUPP;
|
|
|
|
policer_item = group_item->policer_item;
|
|
if (attrs[DEVLINK_ATTR_TRAP_POLICER_ID]) {
|
|
u32 policer_id;
|
|
|
|
policer_id = nla_get_u32(attrs[DEVLINK_ATTR_TRAP_POLICER_ID]);
|
|
policer_item = devlink_trap_policer_item_lookup(devlink,
|
|
policer_id);
|
|
if (policer_id && !policer_item) {
|
|
NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap policer");
|
|
return -ENOENT;
|
|
}
|
|
}
|
|
policer = policer_item ? policer_item->policer : NULL;
|
|
|
|
err = devlink->ops->trap_group_set(devlink, group_item->group, policer,
|
|
extack);
|
|
if (err)
|
|
return err;
|
|
|
|
group_item->policer_item = policer_item;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int devlink_nl_cmd_trap_group_set_doit(struct sk_buff *skb,
|
|
struct genl_info *info)
|
|
{
|
|
struct netlink_ext_ack *extack = info->extack;
|
|
struct devlink *devlink = info->user_ptr[0];
|
|
struct devlink_trap_group_item *group_item;
|
|
bool modified = false;
|
|
int err;
|
|
|
|
if (list_empty(&devlink->trap_group_list))
|
|
return -EOPNOTSUPP;
|
|
|
|
group_item = devlink_trap_group_item_get_from_info(devlink, info);
|
|
if (!group_item) {
|
|
NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap group");
|
|
return -ENOENT;
|
|
}
|
|
|
|
err = devlink_trap_group_action_set(devlink, group_item, info,
|
|
&modified);
|
|
if (err)
|
|
return err;
|
|
|
|
err = devlink_trap_group_set(devlink, group_item, info);
|
|
if (err)
|
|
goto err_trap_group_set;
|
|
|
|
return 0;
|
|
|
|
err_trap_group_set:
|
|
if (modified)
|
|
NL_SET_ERR_MSG_MOD(extack, "Trap group set failed, but some changes were committed already");
|
|
return err;
|
|
}
|
|
|
|
static struct devlink_trap_policer_item *
|
|
devlink_trap_policer_item_get_from_info(struct devlink *devlink,
|
|
struct genl_info *info)
|
|
{
|
|
u32 id;
|
|
|
|
if (!info->attrs[DEVLINK_ATTR_TRAP_POLICER_ID])
|
|
return NULL;
|
|
id = nla_get_u32(info->attrs[DEVLINK_ATTR_TRAP_POLICER_ID]);
|
|
|
|
return devlink_trap_policer_item_lookup(devlink, id);
|
|
}
|
|
|
|
static int
|
|
devlink_trap_policer_stats_put(struct sk_buff *msg, struct devlink *devlink,
|
|
const struct devlink_trap_policer *policer)
|
|
{
|
|
struct nlattr *attr;
|
|
u64 drops;
|
|
int err;
|
|
|
|
if (!devlink->ops->trap_policer_counter_get)
|
|
return 0;
|
|
|
|
err = devlink->ops->trap_policer_counter_get(devlink, policer, &drops);
|
|
if (err)
|
|
return err;
|
|
|
|
attr = nla_nest_start(msg, DEVLINK_ATTR_STATS);
|
|
if (!attr)
|
|
return -EMSGSIZE;
|
|
|
|
if (nla_put_u64_64bit(msg, DEVLINK_ATTR_STATS_RX_DROPPED, drops,
|
|
DEVLINK_ATTR_PAD))
|
|
goto nla_put_failure;
|
|
|
|
nla_nest_end(msg, attr);
|
|
|
|
return 0;
|
|
|
|
nla_put_failure:
|
|
nla_nest_cancel(msg, attr);
|
|
return -EMSGSIZE;
|
|
}
|
|
|
|
static int
|
|
devlink_nl_trap_policer_fill(struct sk_buff *msg, struct devlink *devlink,
|
|
const struct devlink_trap_policer_item *policer_item,
|
|
enum devlink_command cmd, u32 portid, u32 seq,
|
|
int flags)
|
|
{
|
|
void *hdr;
|
|
int err;
|
|
|
|
hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
|
|
if (!hdr)
|
|
return -EMSGSIZE;
|
|
|
|
if (devlink_nl_put_handle(msg, devlink))
|
|
goto nla_put_failure;
|
|
|
|
if (nla_put_u32(msg, DEVLINK_ATTR_TRAP_POLICER_ID,
|
|
policer_item->policer->id))
|
|
goto nla_put_failure;
|
|
|
|
if (nla_put_u64_64bit(msg, DEVLINK_ATTR_TRAP_POLICER_RATE,
|
|
policer_item->rate, DEVLINK_ATTR_PAD))
|
|
goto nla_put_failure;
|
|
|
|
if (nla_put_u64_64bit(msg, DEVLINK_ATTR_TRAP_POLICER_BURST,
|
|
policer_item->burst, DEVLINK_ATTR_PAD))
|
|
goto nla_put_failure;
|
|
|
|
err = devlink_trap_policer_stats_put(msg, devlink,
|
|
policer_item->policer);
|
|
if (err)
|
|
goto nla_put_failure;
|
|
|
|
genlmsg_end(msg, hdr);
|
|
|
|
return 0;
|
|
|
|
nla_put_failure:
|
|
genlmsg_cancel(msg, hdr);
|
|
return -EMSGSIZE;
|
|
}
|
|
|
|
static int devlink_nl_cmd_trap_policer_get_doit(struct sk_buff *skb,
|
|
struct genl_info *info)
|
|
{
|
|
struct devlink_trap_policer_item *policer_item;
|
|
struct netlink_ext_ack *extack = info->extack;
|
|
struct devlink *devlink = info->user_ptr[0];
|
|
struct sk_buff *msg;
|
|
int err;
|
|
|
|
if (list_empty(&devlink->trap_policer_list))
|
|
return -EOPNOTSUPP;
|
|
|
|
policer_item = devlink_trap_policer_item_get_from_info(devlink, info);
|
|
if (!policer_item) {
|
|
NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap policer");
|
|
return -ENOENT;
|
|
}
|
|
|
|
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
|
|
if (!msg)
|
|
return -ENOMEM;
|
|
|
|
err = devlink_nl_trap_policer_fill(msg, devlink, policer_item,
|
|
DEVLINK_CMD_TRAP_POLICER_NEW,
|
|
info->snd_portid, info->snd_seq, 0);
|
|
if (err)
|
|
goto err_trap_policer_fill;
|
|
|
|
return genlmsg_reply(msg, info);
|
|
|
|
err_trap_policer_fill:
|
|
nlmsg_free(msg);
|
|
return err;
|
|
}
|
|
|
|
static int devlink_nl_cmd_trap_policer_get_dumpit(struct sk_buff *msg,
|
|
struct netlink_callback *cb)
|
|
{
|
|
enum devlink_command cmd = DEVLINK_CMD_TRAP_POLICER_NEW;
|
|
struct devlink_trap_policer_item *policer_item;
|
|
u32 portid = NETLINK_CB(cb->skb).portid;
|
|
struct devlink *devlink;
|
|
int start = cb->args[0];
|
|
unsigned long index;
|
|
int idx = 0;
|
|
int err;
|
|
|
|
mutex_lock(&devlink_mutex);
|
|
xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) {
|
|
if (!devlink_try_get(devlink))
|
|
continue;
|
|
|
|
if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
|
|
goto retry;
|
|
|
|
mutex_lock(&devlink->lock);
|
|
list_for_each_entry(policer_item, &devlink->trap_policer_list,
|
|
list) {
|
|
if (idx < start) {
|
|
idx++;
|
|
continue;
|
|
}
|
|
err = devlink_nl_trap_policer_fill(msg, devlink,
|
|
policer_item, cmd,
|
|
portid,
|
|
cb->nlh->nlmsg_seq,
|
|
NLM_F_MULTI);
|
|
if (err) {
|
|
mutex_unlock(&devlink->lock);
|
|
devlink_put(devlink);
|
|
goto out;
|
|
}
|
|
idx++;
|
|
}
|
|
mutex_unlock(&devlink->lock);
|
|
retry:
|
|
devlink_put(devlink);
|
|
}
|
|
out:
|
|
mutex_unlock(&devlink_mutex);
|
|
|
|
cb->args[0] = idx;
|
|
return msg->len;
|
|
}
|
|
|
|
static int
|
|
devlink_trap_policer_set(struct devlink *devlink,
|
|
struct devlink_trap_policer_item *policer_item,
|
|
struct genl_info *info)
|
|
{
|
|
struct netlink_ext_ack *extack = info->extack;
|
|
struct nlattr **attrs = info->attrs;
|
|
u64 rate, burst;
|
|
int err;
|
|
|
|
rate = policer_item->rate;
|
|
burst = policer_item->burst;
|
|
|
|
if (attrs[DEVLINK_ATTR_TRAP_POLICER_RATE])
|
|
rate = nla_get_u64(attrs[DEVLINK_ATTR_TRAP_POLICER_RATE]);
|
|
|
|
if (attrs[DEVLINK_ATTR_TRAP_POLICER_BURST])
|
|
burst = nla_get_u64(attrs[DEVLINK_ATTR_TRAP_POLICER_BURST]);
|
|
|
|
if (rate < policer_item->policer->min_rate) {
|
|
NL_SET_ERR_MSG_MOD(extack, "Policer rate lower than limit");
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (rate > policer_item->policer->max_rate) {
|
|
NL_SET_ERR_MSG_MOD(extack, "Policer rate higher than limit");
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (burst < policer_item->policer->min_burst) {
|
|
NL_SET_ERR_MSG_MOD(extack, "Policer burst size lower than limit");
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (burst > policer_item->policer->max_burst) {
|
|
NL_SET_ERR_MSG_MOD(extack, "Policer burst size higher than limit");
|
|
return -EINVAL;
|
|
}
|
|
|
|
err = devlink->ops->trap_policer_set(devlink, policer_item->policer,
|
|
rate, burst, info->extack);
|
|
if (err)
|
|
return err;
|
|
|
|
policer_item->rate = rate;
|
|
policer_item->burst = burst;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int devlink_nl_cmd_trap_policer_set_doit(struct sk_buff *skb,
|
|
struct genl_info *info)
|
|
{
|
|
struct devlink_trap_policer_item *policer_item;
|
|
struct netlink_ext_ack *extack = info->extack;
|
|
struct devlink *devlink = info->user_ptr[0];
|
|
|
|
if (list_empty(&devlink->trap_policer_list))
|
|
return -EOPNOTSUPP;
|
|
|
|
if (!devlink->ops->trap_policer_set)
|
|
return -EOPNOTSUPP;
|
|
|
|
policer_item = devlink_trap_policer_item_get_from_info(devlink, info);
|
|
if (!policer_item) {
|
|
NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap policer");
|
|
return -ENOENT;
|
|
}
|
|
|
|
return devlink_trap_policer_set(devlink, policer_item, info);
|
|
}
|
|
|
|
static const struct nla_policy devlink_nl_policy[DEVLINK_ATTR_MAX + 1] = {
|
|
[DEVLINK_ATTR_UNSPEC] = { .strict_start_type =
|
|
DEVLINK_ATTR_TRAP_POLICER_ID },
|
|
[DEVLINK_ATTR_BUS_NAME] = { .type = NLA_NUL_STRING },
|
|
[DEVLINK_ATTR_DEV_NAME] = { .type = NLA_NUL_STRING },
|
|
[DEVLINK_ATTR_PORT_INDEX] = { .type = NLA_U32 },
|
|
[DEVLINK_ATTR_PORT_TYPE] = NLA_POLICY_RANGE(NLA_U16, DEVLINK_PORT_TYPE_AUTO,
|
|
DEVLINK_PORT_TYPE_IB),
|
|
[DEVLINK_ATTR_PORT_SPLIT_COUNT] = { .type = NLA_U32 },
|
|
[DEVLINK_ATTR_SB_INDEX] = { .type = NLA_U32 },
|
|
[DEVLINK_ATTR_SB_POOL_INDEX] = { .type = NLA_U16 },
|
|
[DEVLINK_ATTR_SB_POOL_TYPE] = { .type = NLA_U8 },
|
|
[DEVLINK_ATTR_SB_POOL_SIZE] = { .type = NLA_U32 },
|
|
[DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE] = { .type = NLA_U8 },
|
|
[DEVLINK_ATTR_SB_THRESHOLD] = { .type = NLA_U32 },
|
|
[DEVLINK_ATTR_SB_TC_INDEX] = { .type = NLA_U16 },
|
|
[DEVLINK_ATTR_ESWITCH_MODE] = NLA_POLICY_RANGE(NLA_U16, DEVLINK_ESWITCH_MODE_LEGACY,
|
|
DEVLINK_ESWITCH_MODE_SWITCHDEV),
|
|
[DEVLINK_ATTR_ESWITCH_INLINE_MODE] = { .type = NLA_U8 },
|
|
[DEVLINK_ATTR_ESWITCH_ENCAP_MODE] = { .type = NLA_U8 },
|
|
[DEVLINK_ATTR_DPIPE_TABLE_NAME] = { .type = NLA_NUL_STRING },
|
|
[DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED] = { .type = NLA_U8 },
|
|
[DEVLINK_ATTR_RESOURCE_ID] = { .type = NLA_U64},
|
|
[DEVLINK_ATTR_RESOURCE_SIZE] = { .type = NLA_U64},
|
|
[DEVLINK_ATTR_PARAM_NAME] = { .type = NLA_NUL_STRING },
|
|
[DEVLINK_ATTR_PARAM_TYPE] = { .type = NLA_U8 },
|
|
[DEVLINK_ATTR_PARAM_VALUE_CMODE] = { .type = NLA_U8 },
|
|
[DEVLINK_ATTR_REGION_NAME] = { .type = NLA_NUL_STRING },
|
|
[DEVLINK_ATTR_REGION_SNAPSHOT_ID] = { .type = NLA_U32 },
|
|
[DEVLINK_ATTR_REGION_CHUNK_ADDR] = { .type = NLA_U64 },
|
|
[DEVLINK_ATTR_REGION_CHUNK_LEN] = { .type = NLA_U64 },
|
|
[DEVLINK_ATTR_HEALTH_REPORTER_NAME] = { .type = NLA_NUL_STRING },
|
|
[DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD] = { .type = NLA_U64 },
|
|
[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER] = { .type = NLA_U8 },
|
|
[DEVLINK_ATTR_FLASH_UPDATE_FILE_NAME] = { .type = NLA_NUL_STRING },
|
|
[DEVLINK_ATTR_FLASH_UPDATE_COMPONENT] = { .type = NLA_NUL_STRING },
|
|
[DEVLINK_ATTR_FLASH_UPDATE_OVERWRITE_MASK] =
|
|
NLA_POLICY_BITFIELD32(DEVLINK_SUPPORTED_FLASH_OVERWRITE_SECTIONS),
|
|
[DEVLINK_ATTR_TRAP_NAME] = { .type = NLA_NUL_STRING },
|
|
[DEVLINK_ATTR_TRAP_ACTION] = { .type = NLA_U8 },
|
|
[DEVLINK_ATTR_TRAP_GROUP_NAME] = { .type = NLA_NUL_STRING },
|
|
[DEVLINK_ATTR_NETNS_PID] = { .type = NLA_U32 },
|
|
[DEVLINK_ATTR_NETNS_FD] = { .type = NLA_U32 },
|
|
[DEVLINK_ATTR_NETNS_ID] = { .type = NLA_U32 },
|
|
[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP] = { .type = NLA_U8 },
|
|
[DEVLINK_ATTR_TRAP_POLICER_ID] = { .type = NLA_U32 },
|
|
[DEVLINK_ATTR_TRAP_POLICER_RATE] = { .type = NLA_U64 },
|
|
[DEVLINK_ATTR_TRAP_POLICER_BURST] = { .type = NLA_U64 },
|
|
[DEVLINK_ATTR_PORT_FUNCTION] = { .type = NLA_NESTED },
|
|
[DEVLINK_ATTR_RELOAD_ACTION] = NLA_POLICY_RANGE(NLA_U8, DEVLINK_RELOAD_ACTION_DRIVER_REINIT,
|
|
DEVLINK_RELOAD_ACTION_MAX),
|
|
[DEVLINK_ATTR_RELOAD_LIMITS] = NLA_POLICY_BITFIELD32(DEVLINK_RELOAD_LIMITS_VALID_MASK),
|
|
[DEVLINK_ATTR_PORT_FLAVOUR] = { .type = NLA_U16 },
|
|
[DEVLINK_ATTR_PORT_PCI_PF_NUMBER] = { .type = NLA_U16 },
|
|
[DEVLINK_ATTR_PORT_PCI_SF_NUMBER] = { .type = NLA_U32 },
|
|
[DEVLINK_ATTR_PORT_CONTROLLER_NUMBER] = { .type = NLA_U32 },
|
|
[DEVLINK_ATTR_RATE_TYPE] = { .type = NLA_U16 },
|
|
[DEVLINK_ATTR_RATE_TX_SHARE] = { .type = NLA_U64 },
|
|
[DEVLINK_ATTR_RATE_TX_MAX] = { .type = NLA_U64 },
|
|
[DEVLINK_ATTR_RATE_NODE_NAME] = { .type = NLA_NUL_STRING },
|
|
[DEVLINK_ATTR_RATE_PARENT_NODE_NAME] = { .type = NLA_NUL_STRING },
|
|
[DEVLINK_ATTR_LINECARD_INDEX] = { .type = NLA_U32 },
|
|
[DEVLINK_ATTR_LINECARD_TYPE] = { .type = NLA_NUL_STRING },
|
|
};
|
|
|
|
static const struct genl_small_ops devlink_nl_ops[] = {
|
|
{
|
|
.cmd = DEVLINK_CMD_GET,
|
|
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
|
|
.doit = devlink_nl_cmd_get_doit,
|
|
.dumpit = devlink_nl_cmd_get_dumpit,
|
|
/* can be retrieved by unprivileged users */
|
|
},
|
|
{
|
|
.cmd = DEVLINK_CMD_PORT_GET,
|
|
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
|
|
.doit = devlink_nl_cmd_port_get_doit,
|
|
.dumpit = devlink_nl_cmd_port_get_dumpit,
|
|
.internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
|
|
/* can be retrieved by unprivileged users */
|
|
},
|
|
{
|
|
.cmd = DEVLINK_CMD_PORT_SET,
|
|
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
|
|
.doit = devlink_nl_cmd_port_set_doit,
|
|
.flags = GENL_ADMIN_PERM,
|
|
.internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
|
|
},
|
|
{
|
|
.cmd = DEVLINK_CMD_RATE_GET,
|
|
.doit = devlink_nl_cmd_rate_get_doit,
|
|
.dumpit = devlink_nl_cmd_rate_get_dumpit,
|
|
.internal_flags = DEVLINK_NL_FLAG_NEED_RATE,
|
|
/* can be retrieved by unprivileged users */
|
|
},
|
|
{
|
|
.cmd = DEVLINK_CMD_RATE_SET,
|
|
.doit = devlink_nl_cmd_rate_set_doit,
|
|
.flags = GENL_ADMIN_PERM,
|
|
.internal_flags = DEVLINK_NL_FLAG_NEED_RATE,
|
|
},
|
|
{
|
|
.cmd = DEVLINK_CMD_RATE_NEW,
|
|
.doit = devlink_nl_cmd_rate_new_doit,
|
|
.flags = GENL_ADMIN_PERM,
|
|
},
|
|
{
|
|
.cmd = DEVLINK_CMD_RATE_DEL,
|
|
.doit = devlink_nl_cmd_rate_del_doit,
|
|
.flags = GENL_ADMIN_PERM,
|
|
.internal_flags = DEVLINK_NL_FLAG_NEED_RATE_NODE,
|
|
},
|
|
{
|
|
.cmd = DEVLINK_CMD_PORT_SPLIT,
|
|
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
|
|
.doit = devlink_nl_cmd_port_split_doit,
|
|
.flags = GENL_ADMIN_PERM,
|
|
.internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
|
|
},
|
|
{
|
|
.cmd = DEVLINK_CMD_PORT_UNSPLIT,
|
|
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
|
|
.doit = devlink_nl_cmd_port_unsplit_doit,
|
|
.flags = GENL_ADMIN_PERM,
|
|
.internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
|
|
},
|
|
{
|
|
.cmd = DEVLINK_CMD_PORT_NEW,
|
|
.doit = devlink_nl_cmd_port_new_doit,
|
|
.flags = GENL_ADMIN_PERM,
|
|
.internal_flags = DEVLINK_NL_FLAG_NO_LOCK,
|
|
},
|
|
{
|
|
.cmd = DEVLINK_CMD_PORT_DEL,
|
|
.doit = devlink_nl_cmd_port_del_doit,
|
|
.flags = GENL_ADMIN_PERM,
|
|
.internal_flags = DEVLINK_NL_FLAG_NO_LOCK,
|
|
},
|
|
{
|
|
.cmd = DEVLINK_CMD_LINECARD_GET,
|
|
.doit = devlink_nl_cmd_linecard_get_doit,
|
|
.dumpit = devlink_nl_cmd_linecard_get_dumpit,
|
|
.internal_flags = DEVLINK_NL_FLAG_NEED_LINECARD,
|
|
/* can be retrieved by unprivileged users */
|
|
},
|
|
{
|
|
.cmd = DEVLINK_CMD_LINECARD_SET,
|
|
.doit = devlink_nl_cmd_linecard_set_doit,
|
|
.flags = GENL_ADMIN_PERM,
|
|
.internal_flags = DEVLINK_NL_FLAG_NEED_LINECARD,
|
|
},
|
|
{
|
|
.cmd = DEVLINK_CMD_SB_GET,
|
|
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
|
|
.doit = devlink_nl_cmd_sb_get_doit,
|
|
.dumpit = devlink_nl_cmd_sb_get_dumpit,
|
|
/* can be retrieved by unprivileged users */
|
|
},
|
|
{
|
|
.cmd = DEVLINK_CMD_SB_POOL_GET,
|
|
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
|
|
.doit = devlink_nl_cmd_sb_pool_get_doit,
|
|
.dumpit = devlink_nl_cmd_sb_pool_get_dumpit,
|
|
/* can be retrieved by unprivileged users */
|
|
},
|
|
{
|
|
.cmd = DEVLINK_CMD_SB_POOL_SET,
|
|
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
|
|
.doit = devlink_nl_cmd_sb_pool_set_doit,
|
|
.flags = GENL_ADMIN_PERM,
|
|
},
|
|
{
|
|
.cmd = DEVLINK_CMD_SB_PORT_POOL_GET,
|
|
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
|
|
.doit = devlink_nl_cmd_sb_port_pool_get_doit,
|
|
.dumpit = devlink_nl_cmd_sb_port_pool_get_dumpit,
|
|
.internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
|
|
/* can be retrieved by unprivileged users */
|
|
},
|
|
{
|
|
.cmd = DEVLINK_CMD_SB_PORT_POOL_SET,
|
|
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
|
|
.doit = devlink_nl_cmd_sb_port_pool_set_doit,
|
|
.flags = GENL_ADMIN_PERM,
|
|
.internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
|
|
},
|
|
{
|
|
.cmd = DEVLINK_CMD_SB_TC_POOL_BIND_GET,
|
|
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
|
|
.doit = devlink_nl_cmd_sb_tc_pool_bind_get_doit,
|
|
.dumpit = devlink_nl_cmd_sb_tc_pool_bind_get_dumpit,
|
|
.internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
|
|
/* can be retrieved by unprivileged users */
|
|
},
|
|
{
|
|
.cmd = DEVLINK_CMD_SB_TC_POOL_BIND_SET,
|
|
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
|
|
.doit = devlink_nl_cmd_sb_tc_pool_bind_set_doit,
|
|
.flags = GENL_ADMIN_PERM,
|
|
.internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
|
|
},
|
|
{
|
|
.cmd = DEVLINK_CMD_SB_OCC_SNAPSHOT,
|
|
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
|
|
.doit = devlink_nl_cmd_sb_occ_snapshot_doit,
|
|
.flags = GENL_ADMIN_PERM,
|
|
},
|
|
{
|
|
.cmd = DEVLINK_CMD_SB_OCC_MAX_CLEAR,
|
|
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
|
|
.doit = devlink_nl_cmd_sb_occ_max_clear_doit,
|
|
.flags = GENL_ADMIN_PERM,
|
|
},
|
|
{
|
|
.cmd = DEVLINK_CMD_ESWITCH_GET,
|
|
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
|
|
.doit = devlink_nl_cmd_eswitch_get_doit,
|
|
.flags = GENL_ADMIN_PERM,
|
|
},
|
|
{
|
|
.cmd = DEVLINK_CMD_ESWITCH_SET,
|
|
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
|
|
.doit = devlink_nl_cmd_eswitch_set_doit,
|
|
.flags = GENL_ADMIN_PERM,
|
|
},
|
|
{
|
|
.cmd = DEVLINK_CMD_DPIPE_TABLE_GET,
|
|
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
|
|
.doit = devlink_nl_cmd_dpipe_table_get,
|
|
/* can be retrieved by unprivileged users */
|
|
},
|
|
{
|
|
.cmd = DEVLINK_CMD_DPIPE_ENTRIES_GET,
|
|
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
|
|
.doit = devlink_nl_cmd_dpipe_entries_get,
|
|
/* can be retrieved by unprivileged users */
|
|
},
|
|
{
|
|
.cmd = DEVLINK_CMD_DPIPE_HEADERS_GET,
|
|
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
|
|
.doit = devlink_nl_cmd_dpipe_headers_get,
|
|
/* can be retrieved by unprivileged users */
|
|
},
|
|
{
|
|
.cmd = DEVLINK_CMD_DPIPE_TABLE_COUNTERS_SET,
|
|
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
|
|
.doit = devlink_nl_cmd_dpipe_table_counters_set,
|
|
.flags = GENL_ADMIN_PERM,
|
|
},
|
|
{
|
|
.cmd = DEVLINK_CMD_RESOURCE_SET,
|
|
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
|
|
.doit = devlink_nl_cmd_resource_set,
|
|
.flags = GENL_ADMIN_PERM,
|
|
},
|
|
{
|
|
.cmd = DEVLINK_CMD_RESOURCE_DUMP,
|
|
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
|
|
.doit = devlink_nl_cmd_resource_dump,
|
|
/* can be retrieved by unprivileged users */
|
|
},
|
|
{
|
|
.cmd = DEVLINK_CMD_RELOAD,
|
|
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
|
|
.doit = devlink_nl_cmd_reload,
|
|
.flags = GENL_ADMIN_PERM,
|
|
.internal_flags = DEVLINK_NL_FLAG_NO_LOCK,
|
|
},
|
|
{
|
|
.cmd = DEVLINK_CMD_PARAM_GET,
|
|
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
|
|
.doit = devlink_nl_cmd_param_get_doit,
|
|
.dumpit = devlink_nl_cmd_param_get_dumpit,
|
|
/* can be retrieved by unprivileged users */
|
|
},
|
|
{
|
|
.cmd = DEVLINK_CMD_PARAM_SET,
|
|
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
|
|
.doit = devlink_nl_cmd_param_set_doit,
|
|
.flags = GENL_ADMIN_PERM,
|
|
},
|
|
{
|
|
.cmd = DEVLINK_CMD_PORT_PARAM_GET,
|
|
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
|
|
.doit = devlink_nl_cmd_port_param_get_doit,
|
|
.dumpit = devlink_nl_cmd_port_param_get_dumpit,
|
|
.internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
|
|
/* can be retrieved by unprivileged users */
|
|
},
|
|
{
|
|
.cmd = DEVLINK_CMD_PORT_PARAM_SET,
|
|
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
|
|
.doit = devlink_nl_cmd_port_param_set_doit,
|
|
.flags = GENL_ADMIN_PERM,
|
|
.internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
|
|
},
|
|
{
|
|
.cmd = DEVLINK_CMD_REGION_GET,
|
|
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
|
|
.doit = devlink_nl_cmd_region_get_doit,
|
|
.dumpit = devlink_nl_cmd_region_get_dumpit,
|
|
.flags = GENL_ADMIN_PERM,
|
|
},
|
|
{
|
|
.cmd = DEVLINK_CMD_REGION_NEW,
|
|
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
|
|
.doit = devlink_nl_cmd_region_new,
|
|
.flags = GENL_ADMIN_PERM,
|
|
},
|
|
{
|
|
.cmd = DEVLINK_CMD_REGION_DEL,
|
|
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
|
|
.doit = devlink_nl_cmd_region_del,
|
|
.flags = GENL_ADMIN_PERM,
|
|
},
|
|
{
|
|
.cmd = DEVLINK_CMD_REGION_READ,
|
|
.validate = GENL_DONT_VALIDATE_STRICT |
|
|
GENL_DONT_VALIDATE_DUMP_STRICT,
|
|
.dumpit = devlink_nl_cmd_region_read_dumpit,
|
|
.flags = GENL_ADMIN_PERM,
|
|
},
|
|
{
|
|
.cmd = DEVLINK_CMD_INFO_GET,
|
|
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
|
|
.doit = devlink_nl_cmd_info_get_doit,
|
|
.dumpit = devlink_nl_cmd_info_get_dumpit,
|
|
/* can be retrieved by unprivileged users */
|
|
},
|
|
{
|
|
.cmd = DEVLINK_CMD_HEALTH_REPORTER_GET,
|
|
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
|
|
.doit = devlink_nl_cmd_health_reporter_get_doit,
|
|
.dumpit = devlink_nl_cmd_health_reporter_get_dumpit,
|
|
.internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT |
|
|
DEVLINK_NL_FLAG_NO_LOCK,
|
|
/* can be retrieved by unprivileged users */
|
|
},
|
|
{
|
|
.cmd = DEVLINK_CMD_HEALTH_REPORTER_SET,
|
|
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
|
|
.doit = devlink_nl_cmd_health_reporter_set_doit,
|
|
.flags = GENL_ADMIN_PERM,
|
|
.internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT |
|
|
DEVLINK_NL_FLAG_NO_LOCK,
|
|
},
|
|
{
|
|
.cmd = DEVLINK_CMD_HEALTH_REPORTER_RECOVER,
|
|
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
|
|
.doit = devlink_nl_cmd_health_reporter_recover_doit,
|
|
.flags = GENL_ADMIN_PERM,
|
|
.internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT |
|
|
DEVLINK_NL_FLAG_NO_LOCK,
|
|
},
|
|
{
|
|
.cmd = DEVLINK_CMD_HEALTH_REPORTER_DIAGNOSE,
|
|
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
|
|
.doit = devlink_nl_cmd_health_reporter_diagnose_doit,
|
|
.flags = GENL_ADMIN_PERM,
|
|
.internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT |
|
|
DEVLINK_NL_FLAG_NO_LOCK,
|
|
},
|
|
{
|
|
.cmd = DEVLINK_CMD_HEALTH_REPORTER_DUMP_GET,
|
|
.validate = GENL_DONT_VALIDATE_STRICT |
|
|
GENL_DONT_VALIDATE_DUMP_STRICT,
|
|
.dumpit = devlink_nl_cmd_health_reporter_dump_get_dumpit,
|
|
.flags = GENL_ADMIN_PERM,
|
|
},
|
|
{
|
|
.cmd = DEVLINK_CMD_HEALTH_REPORTER_DUMP_CLEAR,
|
|
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
|
|
.doit = devlink_nl_cmd_health_reporter_dump_clear_doit,
|
|
.flags = GENL_ADMIN_PERM,
|
|
.internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT |
|
|
DEVLINK_NL_FLAG_NO_LOCK,
|
|
},
|
|
{
|
|
.cmd = DEVLINK_CMD_HEALTH_REPORTER_TEST,
|
|
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
|
|
.doit = devlink_nl_cmd_health_reporter_test_doit,
|
|
.flags = GENL_ADMIN_PERM,
|
|
.internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT |
|
|
DEVLINK_NL_FLAG_NO_LOCK,
|
|
},
|
|
{
|
|
.cmd = DEVLINK_CMD_FLASH_UPDATE,
|
|
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
|
|
.doit = devlink_nl_cmd_flash_update,
|
|
.flags = GENL_ADMIN_PERM,
|
|
},
|
|
{
|
|
.cmd = DEVLINK_CMD_TRAP_GET,
|
|
.doit = devlink_nl_cmd_trap_get_doit,
|
|
.dumpit = devlink_nl_cmd_trap_get_dumpit,
|
|
/* can be retrieved by unprivileged users */
|
|
},
|
|
{
|
|
.cmd = DEVLINK_CMD_TRAP_SET,
|
|
.doit = devlink_nl_cmd_trap_set_doit,
|
|
.flags = GENL_ADMIN_PERM,
|
|
},
|
|
{
|
|
.cmd = DEVLINK_CMD_TRAP_GROUP_GET,
|
|
.doit = devlink_nl_cmd_trap_group_get_doit,
|
|
.dumpit = devlink_nl_cmd_trap_group_get_dumpit,
|
|
/* can be retrieved by unprivileged users */
|
|
},
|
|
{
|
|
.cmd = DEVLINK_CMD_TRAP_GROUP_SET,
|
|
.doit = devlink_nl_cmd_trap_group_set_doit,
|
|
.flags = GENL_ADMIN_PERM,
|
|
},
|
|
{
|
|
.cmd = DEVLINK_CMD_TRAP_POLICER_GET,
|
|
.doit = devlink_nl_cmd_trap_policer_get_doit,
|
|
.dumpit = devlink_nl_cmd_trap_policer_get_dumpit,
|
|
/* can be retrieved by unprivileged users */
|
|
},
|
|
{
|
|
.cmd = DEVLINK_CMD_TRAP_POLICER_SET,
|
|
.doit = devlink_nl_cmd_trap_policer_set_doit,
|
|
.flags = GENL_ADMIN_PERM,
|
|
},
|
|
};
|
|
|
|
static struct genl_family devlink_nl_family __ro_after_init = {
|
|
.name = DEVLINK_GENL_NAME,
|
|
.version = DEVLINK_GENL_VERSION,
|
|
.maxattr = DEVLINK_ATTR_MAX,
|
|
.policy = devlink_nl_policy,
|
|
.netnsok = true,
|
|
.pre_doit = devlink_nl_pre_doit,
|
|
.post_doit = devlink_nl_post_doit,
|
|
.module = THIS_MODULE,
|
|
.small_ops = devlink_nl_ops,
|
|
.n_small_ops = ARRAY_SIZE(devlink_nl_ops),
|
|
.mcgrps = devlink_nl_mcgrps,
|
|
.n_mcgrps = ARRAY_SIZE(devlink_nl_mcgrps),
|
|
};
|
|
|
|
static bool devlink_reload_actions_valid(const struct devlink_ops *ops)
|
|
{
|
|
const struct devlink_reload_combination *comb;
|
|
int i;
|
|
|
|
if (!devlink_reload_supported(ops)) {
|
|
if (WARN_ON(ops->reload_actions))
|
|
return false;
|
|
return true;
|
|
}
|
|
|
|
if (WARN_ON(!ops->reload_actions ||
|
|
ops->reload_actions & BIT(DEVLINK_RELOAD_ACTION_UNSPEC) ||
|
|
ops->reload_actions >= BIT(__DEVLINK_RELOAD_ACTION_MAX)))
|
|
return false;
|
|
|
|
if (WARN_ON(ops->reload_limits & BIT(DEVLINK_RELOAD_LIMIT_UNSPEC) ||
|
|
ops->reload_limits >= BIT(__DEVLINK_RELOAD_LIMIT_MAX)))
|
|
return false;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(devlink_reload_invalid_combinations); i++) {
|
|
comb = &devlink_reload_invalid_combinations[i];
|
|
if (ops->reload_actions == BIT(comb->action) &&
|
|
ops->reload_limits == BIT(comb->limit))
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* devlink_set_features - Set devlink supported features
|
|
*
|
|
* @devlink: devlink
|
|
* @features: devlink support features
|
|
*
|
|
* This interface allows us to set reload ops separatelly from
|
|
* the devlink_alloc.
|
|
*/
|
|
void devlink_set_features(struct devlink *devlink, u64 features)
|
|
{
|
|
ASSERT_DEVLINK_NOT_REGISTERED(devlink);
|
|
|
|
WARN_ON(features & DEVLINK_F_RELOAD &&
|
|
!devlink_reload_supported(devlink->ops));
|
|
devlink->features = features;
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_set_features);
|
|
|
|
/**
|
|
* devlink_alloc_ns - Allocate new devlink instance resources
|
|
* in specific namespace
|
|
*
|
|
* @ops: ops
|
|
* @priv_size: size of user private data
|
|
* @net: net namespace
|
|
* @dev: parent device
|
|
*
|
|
* Allocate new devlink instance resources, including devlink index
|
|
* and name.
|
|
*/
|
|
struct devlink *devlink_alloc_ns(const struct devlink_ops *ops,
|
|
size_t priv_size, struct net *net,
|
|
struct device *dev)
|
|
{
|
|
struct devlink *devlink;
|
|
static u32 last_id;
|
|
int ret;
|
|
|
|
WARN_ON(!ops || !dev);
|
|
if (!devlink_reload_actions_valid(ops))
|
|
return NULL;
|
|
|
|
devlink = kzalloc(sizeof(*devlink) + priv_size, GFP_KERNEL);
|
|
if (!devlink)
|
|
return NULL;
|
|
|
|
ret = xa_alloc_cyclic(&devlinks, &devlink->index, devlink, xa_limit_31b,
|
|
&last_id, GFP_KERNEL);
|
|
if (ret < 0) {
|
|
kfree(devlink);
|
|
return NULL;
|
|
}
|
|
|
|
devlink->dev = dev;
|
|
devlink->ops = ops;
|
|
xa_init_flags(&devlink->snapshot_ids, XA_FLAGS_ALLOC);
|
|
write_pnet(&devlink->_net, net);
|
|
INIT_LIST_HEAD(&devlink->port_list);
|
|
INIT_LIST_HEAD(&devlink->rate_list);
|
|
INIT_LIST_HEAD(&devlink->linecard_list);
|
|
INIT_LIST_HEAD(&devlink->sb_list);
|
|
INIT_LIST_HEAD_RCU(&devlink->dpipe_table_list);
|
|
INIT_LIST_HEAD(&devlink->resource_list);
|
|
INIT_LIST_HEAD(&devlink->param_list);
|
|
INIT_LIST_HEAD(&devlink->region_list);
|
|
INIT_LIST_HEAD(&devlink->reporter_list);
|
|
INIT_LIST_HEAD(&devlink->trap_list);
|
|
INIT_LIST_HEAD(&devlink->trap_group_list);
|
|
INIT_LIST_HEAD(&devlink->trap_policer_list);
|
|
mutex_init(&devlink->lock);
|
|
mutex_init(&devlink->reporters_lock);
|
|
mutex_init(&devlink->linecards_lock);
|
|
refcount_set(&devlink->refcount, 1);
|
|
init_completion(&devlink->comp);
|
|
|
|
return devlink;
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_alloc_ns);
|
|
|
|
static void
|
|
devlink_trap_policer_notify(struct devlink *devlink,
|
|
const struct devlink_trap_policer_item *policer_item,
|
|
enum devlink_command cmd);
|
|
static void
|
|
devlink_trap_group_notify(struct devlink *devlink,
|
|
const struct devlink_trap_group_item *group_item,
|
|
enum devlink_command cmd);
|
|
static void devlink_trap_notify(struct devlink *devlink,
|
|
const struct devlink_trap_item *trap_item,
|
|
enum devlink_command cmd);
|
|
|
|
static void devlink_notify_register(struct devlink *devlink)
|
|
{
|
|
struct devlink_trap_policer_item *policer_item;
|
|
struct devlink_trap_group_item *group_item;
|
|
struct devlink_param_item *param_item;
|
|
struct devlink_trap_item *trap_item;
|
|
struct devlink_port *devlink_port;
|
|
struct devlink_linecard *linecard;
|
|
struct devlink_rate *rate_node;
|
|
struct devlink_region *region;
|
|
|
|
devlink_notify(devlink, DEVLINK_CMD_NEW);
|
|
list_for_each_entry(linecard, &devlink->linecard_list, list)
|
|
devlink_linecard_notify(linecard, DEVLINK_CMD_LINECARD_NEW);
|
|
|
|
list_for_each_entry(devlink_port, &devlink->port_list, list)
|
|
devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
|
|
|
|
list_for_each_entry(policer_item, &devlink->trap_policer_list, list)
|
|
devlink_trap_policer_notify(devlink, policer_item,
|
|
DEVLINK_CMD_TRAP_POLICER_NEW);
|
|
|
|
list_for_each_entry(group_item, &devlink->trap_group_list, list)
|
|
devlink_trap_group_notify(devlink, group_item,
|
|
DEVLINK_CMD_TRAP_GROUP_NEW);
|
|
|
|
list_for_each_entry(trap_item, &devlink->trap_list, list)
|
|
devlink_trap_notify(devlink, trap_item, DEVLINK_CMD_TRAP_NEW);
|
|
|
|
list_for_each_entry(rate_node, &devlink->rate_list, list)
|
|
devlink_rate_notify(rate_node, DEVLINK_CMD_RATE_NEW);
|
|
|
|
list_for_each_entry(region, &devlink->region_list, list)
|
|
devlink_nl_region_notify(region, NULL, DEVLINK_CMD_REGION_NEW);
|
|
|
|
list_for_each_entry(param_item, &devlink->param_list, list)
|
|
devlink_param_notify(devlink, 0, param_item,
|
|
DEVLINK_CMD_PARAM_NEW);
|
|
}
|
|
|
|
static void devlink_notify_unregister(struct devlink *devlink)
|
|
{
|
|
struct devlink_trap_policer_item *policer_item;
|
|
struct devlink_trap_group_item *group_item;
|
|
struct devlink_param_item *param_item;
|
|
struct devlink_trap_item *trap_item;
|
|
struct devlink_port *devlink_port;
|
|
struct devlink_rate *rate_node;
|
|
struct devlink_region *region;
|
|
|
|
list_for_each_entry_reverse(param_item, &devlink->param_list, list)
|
|
devlink_param_notify(devlink, 0, param_item,
|
|
DEVLINK_CMD_PARAM_DEL);
|
|
|
|
list_for_each_entry_reverse(region, &devlink->region_list, list)
|
|
devlink_nl_region_notify(region, NULL, DEVLINK_CMD_REGION_DEL);
|
|
|
|
list_for_each_entry_reverse(rate_node, &devlink->rate_list, list)
|
|
devlink_rate_notify(rate_node, DEVLINK_CMD_RATE_DEL);
|
|
|
|
list_for_each_entry_reverse(trap_item, &devlink->trap_list, list)
|
|
devlink_trap_notify(devlink, trap_item, DEVLINK_CMD_TRAP_DEL);
|
|
|
|
list_for_each_entry_reverse(group_item, &devlink->trap_group_list, list)
|
|
devlink_trap_group_notify(devlink, group_item,
|
|
DEVLINK_CMD_TRAP_GROUP_DEL);
|
|
list_for_each_entry_reverse(policer_item, &devlink->trap_policer_list,
|
|
list)
|
|
devlink_trap_policer_notify(devlink, policer_item,
|
|
DEVLINK_CMD_TRAP_POLICER_DEL);
|
|
|
|
list_for_each_entry_reverse(devlink_port, &devlink->port_list, list)
|
|
devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_DEL);
|
|
devlink_notify(devlink, DEVLINK_CMD_DEL);
|
|
}
|
|
|
|
/**
|
|
* devlink_register - Register devlink instance
|
|
*
|
|
* @devlink: devlink
|
|
*/
|
|
void devlink_register(struct devlink *devlink)
|
|
{
|
|
ASSERT_DEVLINK_NOT_REGISTERED(devlink);
|
|
/* Make sure that we are in .probe() routine */
|
|
|
|
mutex_lock(&devlink_mutex);
|
|
xa_set_mark(&devlinks, devlink->index, DEVLINK_REGISTERED);
|
|
devlink_notify_register(devlink);
|
|
mutex_unlock(&devlink_mutex);
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_register);
|
|
|
|
/**
|
|
* devlink_unregister - Unregister devlink instance
|
|
*
|
|
* @devlink: devlink
|
|
*/
|
|
void devlink_unregister(struct devlink *devlink)
|
|
{
|
|
ASSERT_DEVLINK_REGISTERED(devlink);
|
|
/* Make sure that we are in .remove() routine */
|
|
|
|
devlink_put(devlink);
|
|
wait_for_completion(&devlink->comp);
|
|
|
|
mutex_lock(&devlink_mutex);
|
|
devlink_notify_unregister(devlink);
|
|
xa_clear_mark(&devlinks, devlink->index, DEVLINK_REGISTERED);
|
|
mutex_unlock(&devlink_mutex);
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_unregister);
|
|
|
|
/**
|
|
* devlink_free - Free devlink instance resources
|
|
*
|
|
* @devlink: devlink
|
|
*/
|
|
void devlink_free(struct devlink *devlink)
|
|
{
|
|
ASSERT_DEVLINK_NOT_REGISTERED(devlink);
|
|
|
|
mutex_destroy(&devlink->linecards_lock);
|
|
mutex_destroy(&devlink->reporters_lock);
|
|
mutex_destroy(&devlink->lock);
|
|
WARN_ON(!list_empty(&devlink->trap_policer_list));
|
|
WARN_ON(!list_empty(&devlink->trap_group_list));
|
|
WARN_ON(!list_empty(&devlink->trap_list));
|
|
WARN_ON(!list_empty(&devlink->reporter_list));
|
|
WARN_ON(!list_empty(&devlink->region_list));
|
|
WARN_ON(!list_empty(&devlink->param_list));
|
|
WARN_ON(!list_empty(&devlink->resource_list));
|
|
WARN_ON(!list_empty(&devlink->dpipe_table_list));
|
|
WARN_ON(!list_empty(&devlink->sb_list));
|
|
WARN_ON(!list_empty(&devlink->rate_list));
|
|
WARN_ON(!list_empty(&devlink->linecard_list));
|
|
WARN_ON(!list_empty(&devlink->port_list));
|
|
|
|
xa_destroy(&devlink->snapshot_ids);
|
|
xa_erase(&devlinks, devlink->index);
|
|
|
|
kfree(devlink);
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_free);
|
|
|
|
static void devlink_port_type_warn(struct work_struct *work)
|
|
{
|
|
WARN(true, "Type was not set for devlink port.");
|
|
}
|
|
|
|
static bool devlink_port_type_should_warn(struct devlink_port *devlink_port)
|
|
{
|
|
/* Ignore CPU and DSA flavours. */
|
|
return devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_CPU &&
|
|
devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_DSA &&
|
|
devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_UNUSED;
|
|
}
|
|
|
|
#define DEVLINK_PORT_TYPE_WARN_TIMEOUT (HZ * 3600)
|
|
|
|
static void devlink_port_type_warn_schedule(struct devlink_port *devlink_port)
|
|
{
|
|
if (!devlink_port_type_should_warn(devlink_port))
|
|
return;
|
|
/* Schedule a work to WARN in case driver does not set port
|
|
* type within timeout.
|
|
*/
|
|
schedule_delayed_work(&devlink_port->type_warn_dw,
|
|
DEVLINK_PORT_TYPE_WARN_TIMEOUT);
|
|
}
|
|
|
|
static void devlink_port_type_warn_cancel(struct devlink_port *devlink_port)
|
|
{
|
|
if (!devlink_port_type_should_warn(devlink_port))
|
|
return;
|
|
cancel_delayed_work_sync(&devlink_port->type_warn_dw);
|
|
}
|
|
|
|
int devl_port_register(struct devlink *devlink,
|
|
struct devlink_port *devlink_port,
|
|
unsigned int port_index)
|
|
{
|
|
lockdep_assert_held(&devlink->lock);
|
|
|
|
if (devlink_port_index_exists(devlink, port_index))
|
|
return -EEXIST;
|
|
|
|
WARN_ON(devlink_port->devlink);
|
|
devlink_port->devlink = devlink;
|
|
devlink_port->index = port_index;
|
|
spin_lock_init(&devlink_port->type_lock);
|
|
INIT_LIST_HEAD(&devlink_port->reporter_list);
|
|
mutex_init(&devlink_port->reporters_lock);
|
|
list_add_tail(&devlink_port->list, &devlink->port_list);
|
|
INIT_LIST_HEAD(&devlink_port->param_list);
|
|
INIT_LIST_HEAD(&devlink_port->region_list);
|
|
|
|
INIT_DELAYED_WORK(&devlink_port->type_warn_dw, &devlink_port_type_warn);
|
|
devlink_port_type_warn_schedule(devlink_port);
|
|
devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(devl_port_register);
|
|
|
|
/**
|
|
* devlink_port_register - Register devlink port
|
|
*
|
|
* @devlink: devlink
|
|
* @devlink_port: devlink port
|
|
* @port_index: driver-specific numerical identifier of the port
|
|
*
|
|
* Register devlink port with provided port index. User can use
|
|
* any indexing, even hw-related one. devlink_port structure
|
|
* is convenient to be embedded inside user driver private structure.
|
|
* Note that the caller should take care of zeroing the devlink_port
|
|
* structure.
|
|
*/
|
|
int devlink_port_register(struct devlink *devlink,
|
|
struct devlink_port *devlink_port,
|
|
unsigned int port_index)
|
|
{
|
|
int err;
|
|
|
|
mutex_lock(&devlink->lock);
|
|
err = devl_port_register(devlink, devlink_port, port_index);
|
|
mutex_unlock(&devlink->lock);
|
|
return err;
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_port_register);
|
|
|
|
void devl_port_unregister(struct devlink_port *devlink_port)
|
|
{
|
|
lockdep_assert_held(&devlink_port->devlink->lock);
|
|
|
|
devlink_port_type_warn_cancel(devlink_port);
|
|
devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_DEL);
|
|
list_del(&devlink_port->list);
|
|
WARN_ON(!list_empty(&devlink_port->reporter_list));
|
|
WARN_ON(!list_empty(&devlink_port->region_list));
|
|
mutex_destroy(&devlink_port->reporters_lock);
|
|
}
|
|
EXPORT_SYMBOL_GPL(devl_port_unregister);
|
|
|
|
/**
|
|
* devlink_port_unregister - Unregister devlink port
|
|
*
|
|
* @devlink_port: devlink port
|
|
*/
|
|
void devlink_port_unregister(struct devlink_port *devlink_port)
|
|
{
|
|
struct devlink *devlink = devlink_port->devlink;
|
|
|
|
mutex_lock(&devlink->lock);
|
|
devl_port_unregister(devlink_port);
|
|
mutex_unlock(&devlink->lock);
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_port_unregister);
|
|
|
|
static void __devlink_port_type_set(struct devlink_port *devlink_port,
|
|
enum devlink_port_type type,
|
|
void *type_dev)
|
|
{
|
|
if (WARN_ON(!devlink_port->devlink))
|
|
return;
|
|
devlink_port_type_warn_cancel(devlink_port);
|
|
spin_lock_bh(&devlink_port->type_lock);
|
|
devlink_port->type = type;
|
|
devlink_port->type_dev = type_dev;
|
|
spin_unlock_bh(&devlink_port->type_lock);
|
|
devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
|
|
}
|
|
|
|
static void devlink_port_type_netdev_checks(struct devlink_port *devlink_port,
|
|
struct net_device *netdev)
|
|
{
|
|
const struct net_device_ops *ops = netdev->netdev_ops;
|
|
|
|
/* If driver registers devlink port, it should set devlink port
|
|
* attributes accordingly so the compat functions are called
|
|
* and the original ops are not used.
|
|
*/
|
|
if (ops->ndo_get_phys_port_name) {
|
|
/* Some drivers use the same set of ndos for netdevs
|
|
* that have devlink_port registered and also for
|
|
* those who don't. Make sure that ndo_get_phys_port_name
|
|
* returns -EOPNOTSUPP here in case it is defined.
|
|
* Warn if not.
|
|
*/
|
|
char name[IFNAMSIZ];
|
|
int err;
|
|
|
|
err = ops->ndo_get_phys_port_name(netdev, name, sizeof(name));
|
|
WARN_ON(err != -EOPNOTSUPP);
|
|
}
|
|
if (ops->ndo_get_port_parent_id) {
|
|
/* Some drivers use the same set of ndos for netdevs
|
|
* that have devlink_port registered and also for
|
|
* those who don't. Make sure that ndo_get_port_parent_id
|
|
* returns -EOPNOTSUPP here in case it is defined.
|
|
* Warn if not.
|
|
*/
|
|
struct netdev_phys_item_id ppid;
|
|
int err;
|
|
|
|
err = ops->ndo_get_port_parent_id(netdev, &ppid);
|
|
WARN_ON(err != -EOPNOTSUPP);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* devlink_port_type_eth_set - Set port type to Ethernet
|
|
*
|
|
* @devlink_port: devlink port
|
|
* @netdev: related netdevice
|
|
*/
|
|
void devlink_port_type_eth_set(struct devlink_port *devlink_port,
|
|
struct net_device *netdev)
|
|
{
|
|
if (netdev)
|
|
devlink_port_type_netdev_checks(devlink_port, netdev);
|
|
else
|
|
dev_warn(devlink_port->devlink->dev,
|
|
"devlink port type for port %d set to Ethernet without a software interface reference, device type not supported by the kernel?\n",
|
|
devlink_port->index);
|
|
|
|
__devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_ETH, netdev);
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_port_type_eth_set);
|
|
|
|
/**
|
|
* devlink_port_type_ib_set - Set port type to InfiniBand
|
|
*
|
|
* @devlink_port: devlink port
|
|
* @ibdev: related IB device
|
|
*/
|
|
void devlink_port_type_ib_set(struct devlink_port *devlink_port,
|
|
struct ib_device *ibdev)
|
|
{
|
|
__devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_IB, ibdev);
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_port_type_ib_set);
|
|
|
|
/**
|
|
* devlink_port_type_clear - Clear port type
|
|
*
|
|
* @devlink_port: devlink port
|
|
*/
|
|
void devlink_port_type_clear(struct devlink_port *devlink_port)
|
|
{
|
|
__devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_NOTSET, NULL);
|
|
devlink_port_type_warn_schedule(devlink_port);
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_port_type_clear);
|
|
|
|
static int __devlink_port_attrs_set(struct devlink_port *devlink_port,
|
|
enum devlink_port_flavour flavour)
|
|
{
|
|
struct devlink_port_attrs *attrs = &devlink_port->attrs;
|
|
|
|
devlink_port->attrs_set = true;
|
|
attrs->flavour = flavour;
|
|
if (attrs->switch_id.id_len) {
|
|
devlink_port->switch_port = true;
|
|
if (WARN_ON(attrs->switch_id.id_len > MAX_PHYS_ITEM_ID_LEN))
|
|
attrs->switch_id.id_len = MAX_PHYS_ITEM_ID_LEN;
|
|
} else {
|
|
devlink_port->switch_port = false;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* devlink_port_attrs_set - Set port attributes
|
|
*
|
|
* @devlink_port: devlink port
|
|
* @attrs: devlink port attrs
|
|
*/
|
|
void devlink_port_attrs_set(struct devlink_port *devlink_port,
|
|
struct devlink_port_attrs *attrs)
|
|
{
|
|
int ret;
|
|
|
|
if (WARN_ON(devlink_port->devlink))
|
|
return;
|
|
devlink_port->attrs = *attrs;
|
|
ret = __devlink_port_attrs_set(devlink_port, attrs->flavour);
|
|
if (ret)
|
|
return;
|
|
WARN_ON(attrs->splittable && attrs->split);
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_port_attrs_set);
|
|
|
|
/**
|
|
* devlink_port_attrs_pci_pf_set - Set PCI PF port attributes
|
|
*
|
|
* @devlink_port: devlink port
|
|
* @controller: associated controller number for the devlink port instance
|
|
* @pf: associated PF for the devlink port instance
|
|
* @external: indicates if the port is for an external controller
|
|
*/
|
|
void devlink_port_attrs_pci_pf_set(struct devlink_port *devlink_port, u32 controller,
|
|
u16 pf, bool external)
|
|
{
|
|
struct devlink_port_attrs *attrs = &devlink_port->attrs;
|
|
int ret;
|
|
|
|
if (WARN_ON(devlink_port->devlink))
|
|
return;
|
|
ret = __devlink_port_attrs_set(devlink_port,
|
|
DEVLINK_PORT_FLAVOUR_PCI_PF);
|
|
if (ret)
|
|
return;
|
|
attrs->pci_pf.controller = controller;
|
|
attrs->pci_pf.pf = pf;
|
|
attrs->pci_pf.external = external;
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_port_attrs_pci_pf_set);
|
|
|
|
/**
|
|
* devlink_port_attrs_pci_vf_set - Set PCI VF port attributes
|
|
*
|
|
* @devlink_port: devlink port
|
|
* @controller: associated controller number for the devlink port instance
|
|
* @pf: associated PF for the devlink port instance
|
|
* @vf: associated VF of a PF for the devlink port instance
|
|
* @external: indicates if the port is for an external controller
|
|
*/
|
|
void devlink_port_attrs_pci_vf_set(struct devlink_port *devlink_port, u32 controller,
|
|
u16 pf, u16 vf, bool external)
|
|
{
|
|
struct devlink_port_attrs *attrs = &devlink_port->attrs;
|
|
int ret;
|
|
|
|
if (WARN_ON(devlink_port->devlink))
|
|
return;
|
|
ret = __devlink_port_attrs_set(devlink_port,
|
|
DEVLINK_PORT_FLAVOUR_PCI_VF);
|
|
if (ret)
|
|
return;
|
|
attrs->pci_vf.controller = controller;
|
|
attrs->pci_vf.pf = pf;
|
|
attrs->pci_vf.vf = vf;
|
|
attrs->pci_vf.external = external;
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_port_attrs_pci_vf_set);
|
|
|
|
/**
|
|
* devlink_port_attrs_pci_sf_set - Set PCI SF port attributes
|
|
*
|
|
* @devlink_port: devlink port
|
|
* @controller: associated controller number for the devlink port instance
|
|
* @pf: associated PF for the devlink port instance
|
|
* @sf: associated SF of a PF for the devlink port instance
|
|
* @external: indicates if the port is for an external controller
|
|
*/
|
|
void devlink_port_attrs_pci_sf_set(struct devlink_port *devlink_port, u32 controller,
|
|
u16 pf, u32 sf, bool external)
|
|
{
|
|
struct devlink_port_attrs *attrs = &devlink_port->attrs;
|
|
int ret;
|
|
|
|
if (WARN_ON(devlink_port->devlink))
|
|
return;
|
|
ret = __devlink_port_attrs_set(devlink_port,
|
|
DEVLINK_PORT_FLAVOUR_PCI_SF);
|
|
if (ret)
|
|
return;
|
|
attrs->pci_sf.controller = controller;
|
|
attrs->pci_sf.pf = pf;
|
|
attrs->pci_sf.sf = sf;
|
|
attrs->pci_sf.external = external;
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_port_attrs_pci_sf_set);
|
|
|
|
/**
|
|
* devl_rate_leaf_create - create devlink rate leaf
|
|
* @devlink_port: devlink port object to create rate object on
|
|
* @priv: driver private data
|
|
*
|
|
* Create devlink rate object of type leaf on provided @devlink_port.
|
|
*/
|
|
int devl_rate_leaf_create(struct devlink_port *devlink_port, void *priv)
|
|
{
|
|
struct devlink *devlink = devlink_port->devlink;
|
|
struct devlink_rate *devlink_rate;
|
|
|
|
devl_assert_locked(devlink_port->devlink);
|
|
|
|
if (WARN_ON(devlink_port->devlink_rate))
|
|
return -EBUSY;
|
|
|
|
devlink_rate = kzalloc(sizeof(*devlink_rate), GFP_KERNEL);
|
|
if (!devlink_rate)
|
|
return -ENOMEM;
|
|
|
|
devlink_rate->type = DEVLINK_RATE_TYPE_LEAF;
|
|
devlink_rate->devlink = devlink;
|
|
devlink_rate->devlink_port = devlink_port;
|
|
devlink_rate->priv = priv;
|
|
list_add_tail(&devlink_rate->list, &devlink->rate_list);
|
|
devlink_port->devlink_rate = devlink_rate;
|
|
devlink_rate_notify(devlink_rate, DEVLINK_CMD_RATE_NEW);
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(devl_rate_leaf_create);
|
|
|
|
int
|
|
devlink_rate_leaf_create(struct devlink_port *devlink_port, void *priv)
|
|
{
|
|
struct devlink *devlink = devlink_port->devlink;
|
|
int ret;
|
|
|
|
mutex_lock(&devlink->lock);
|
|
ret = devl_rate_leaf_create(devlink_port, priv);
|
|
mutex_unlock(&devlink->lock);
|
|
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_rate_leaf_create);
|
|
|
|
void devl_rate_leaf_destroy(struct devlink_port *devlink_port)
|
|
{
|
|
struct devlink_rate *devlink_rate = devlink_port->devlink_rate;
|
|
|
|
devl_assert_locked(devlink_port->devlink);
|
|
if (!devlink_rate)
|
|
return;
|
|
|
|
devlink_rate_notify(devlink_rate, DEVLINK_CMD_RATE_DEL);
|
|
if (devlink_rate->parent)
|
|
refcount_dec(&devlink_rate->parent->refcnt);
|
|
list_del(&devlink_rate->list);
|
|
devlink_port->devlink_rate = NULL;
|
|
kfree(devlink_rate);
|
|
}
|
|
EXPORT_SYMBOL_GPL(devl_rate_leaf_destroy);
|
|
|
|
/**
|
|
* devlink_rate_leaf_destroy - destroy devlink rate leaf
|
|
*
|
|
* @devlink_port: devlink port linked to the rate object
|
|
*
|
|
* Context: Takes and release devlink->lock <mutex>.
|
|
*/
|
|
void devlink_rate_leaf_destroy(struct devlink_port *devlink_port)
|
|
{
|
|
struct devlink_rate *devlink_rate = devlink_port->devlink_rate;
|
|
struct devlink *devlink = devlink_port->devlink;
|
|
|
|
if (!devlink_rate)
|
|
return;
|
|
|
|
mutex_lock(&devlink->lock);
|
|
devl_rate_leaf_destroy(devlink_port);
|
|
mutex_unlock(&devlink->lock);
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_rate_leaf_destroy);
|
|
|
|
/**
|
|
* devl_rate_nodes_destroy - destroy all devlink rate nodes on device
|
|
* @devlink: devlink instance
|
|
*
|
|
* Unset parent for all rate objects and destroy all rate nodes
|
|
* on specified device.
|
|
*/
|
|
void devl_rate_nodes_destroy(struct devlink *devlink)
|
|
{
|
|
static struct devlink_rate *devlink_rate, *tmp;
|
|
const struct devlink_ops *ops = devlink->ops;
|
|
|
|
devl_assert_locked(devlink);
|
|
|
|
list_for_each_entry(devlink_rate, &devlink->rate_list, list) {
|
|
if (!devlink_rate->parent)
|
|
continue;
|
|
|
|
refcount_dec(&devlink_rate->parent->refcnt);
|
|
if (devlink_rate_is_leaf(devlink_rate))
|
|
ops->rate_leaf_parent_set(devlink_rate, NULL, devlink_rate->priv,
|
|
NULL, NULL);
|
|
else if (devlink_rate_is_node(devlink_rate))
|
|
ops->rate_node_parent_set(devlink_rate, NULL, devlink_rate->priv,
|
|
NULL, NULL);
|
|
}
|
|
list_for_each_entry_safe(devlink_rate, tmp, &devlink->rate_list, list) {
|
|
if (devlink_rate_is_node(devlink_rate)) {
|
|
ops->rate_node_del(devlink_rate, devlink_rate->priv, NULL);
|
|
list_del(&devlink_rate->list);
|
|
kfree(devlink_rate->name);
|
|
kfree(devlink_rate);
|
|
}
|
|
}
|
|
}
|
|
EXPORT_SYMBOL_GPL(devl_rate_nodes_destroy);
|
|
|
|
/**
|
|
* devlink_rate_nodes_destroy - destroy all devlink rate nodes on device
|
|
*
|
|
* @devlink: devlink instance
|
|
*
|
|
* Unset parent for all rate objects and destroy all rate nodes
|
|
* on specified device.
|
|
*
|
|
* Context: Takes and release devlink->lock <mutex>.
|
|
*/
|
|
void devlink_rate_nodes_destroy(struct devlink *devlink)
|
|
{
|
|
mutex_lock(&devlink->lock);
|
|
devl_rate_nodes_destroy(devlink);
|
|
mutex_unlock(&devlink->lock);
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_rate_nodes_destroy);
|
|
|
|
/**
|
|
* devlink_port_linecard_set - Link port with a linecard
|
|
*
|
|
* @devlink_port: devlink port
|
|
* @linecard: devlink linecard
|
|
*/
|
|
void devlink_port_linecard_set(struct devlink_port *devlink_port,
|
|
struct devlink_linecard *linecard)
|
|
{
|
|
if (WARN_ON(devlink_port->devlink))
|
|
return;
|
|
devlink_port->linecard = linecard;
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_port_linecard_set);
|
|
|
|
static int __devlink_port_phys_port_name_get(struct devlink_port *devlink_port,
|
|
char *name, size_t len)
|
|
{
|
|
struct devlink_port_attrs *attrs = &devlink_port->attrs;
|
|
int n = 0;
|
|
|
|
if (!devlink_port->attrs_set)
|
|
return -EOPNOTSUPP;
|
|
|
|
switch (attrs->flavour) {
|
|
case DEVLINK_PORT_FLAVOUR_PHYSICAL:
|
|
if (devlink_port->linecard)
|
|
n = snprintf(name, len, "l%u",
|
|
devlink_port->linecard->index);
|
|
if (n < len)
|
|
n += snprintf(name + n, len - n, "p%u",
|
|
attrs->phys.port_number);
|
|
if (n < len && attrs->split)
|
|
n += snprintf(name + n, len - n, "s%u",
|
|
attrs->phys.split_subport_number);
|
|
break;
|
|
case DEVLINK_PORT_FLAVOUR_CPU:
|
|
case DEVLINK_PORT_FLAVOUR_DSA:
|
|
case DEVLINK_PORT_FLAVOUR_UNUSED:
|
|
/* As CPU and DSA ports do not have a netdevice associated
|
|
* case should not ever happen.
|
|
*/
|
|
WARN_ON(1);
|
|
return -EINVAL;
|
|
case DEVLINK_PORT_FLAVOUR_PCI_PF:
|
|
if (attrs->pci_pf.external) {
|
|
n = snprintf(name, len, "c%u", attrs->pci_pf.controller);
|
|
if (n >= len)
|
|
return -EINVAL;
|
|
len -= n;
|
|
name += n;
|
|
}
|
|
n = snprintf(name, len, "pf%u", attrs->pci_pf.pf);
|
|
break;
|
|
case DEVLINK_PORT_FLAVOUR_PCI_VF:
|
|
if (attrs->pci_vf.external) {
|
|
n = snprintf(name, len, "c%u", attrs->pci_vf.controller);
|
|
if (n >= len)
|
|
return -EINVAL;
|
|
len -= n;
|
|
name += n;
|
|
}
|
|
n = snprintf(name, len, "pf%uvf%u",
|
|
attrs->pci_vf.pf, attrs->pci_vf.vf);
|
|
break;
|
|
case DEVLINK_PORT_FLAVOUR_PCI_SF:
|
|
if (attrs->pci_sf.external) {
|
|
n = snprintf(name, len, "c%u", attrs->pci_sf.controller);
|
|
if (n >= len)
|
|
return -EINVAL;
|
|
len -= n;
|
|
name += n;
|
|
}
|
|
n = snprintf(name, len, "pf%usf%u", attrs->pci_sf.pf,
|
|
attrs->pci_sf.sf);
|
|
break;
|
|
case DEVLINK_PORT_FLAVOUR_VIRTUAL:
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
if (n >= len)
|
|
return -EINVAL;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int devlink_linecard_types_init(struct devlink_linecard *linecard)
|
|
{
|
|
struct devlink_linecard_type *linecard_type;
|
|
unsigned int count;
|
|
int i;
|
|
|
|
count = linecard->ops->types_count(linecard, linecard->priv);
|
|
linecard->types = kmalloc_array(count, sizeof(*linecard_type),
|
|
GFP_KERNEL);
|
|
if (!linecard->types)
|
|
return -ENOMEM;
|
|
linecard->types_count = count;
|
|
|
|
for (i = 0; i < count; i++) {
|
|
linecard_type = &linecard->types[i];
|
|
linecard->ops->types_get(linecard, linecard->priv, i,
|
|
&linecard_type->type,
|
|
&linecard_type->priv);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void devlink_linecard_types_fini(struct devlink_linecard *linecard)
|
|
{
|
|
kfree(linecard->types);
|
|
}
|
|
|
|
/**
|
|
* devlink_linecard_create - Create devlink linecard
|
|
*
|
|
* @devlink: devlink
|
|
* @linecard_index: driver-specific numerical identifier of the linecard
|
|
* @ops: linecards ops
|
|
* @priv: user priv pointer
|
|
*
|
|
* Create devlink linecard instance with provided linecard index.
|
|
* Caller can use any indexing, even hw-related one.
|
|
*
|
|
* Return: Line card structure or an ERR_PTR() encoded error code.
|
|
*/
|
|
struct devlink_linecard *
|
|
devlink_linecard_create(struct devlink *devlink, unsigned int linecard_index,
|
|
const struct devlink_linecard_ops *ops, void *priv)
|
|
{
|
|
struct devlink_linecard *linecard;
|
|
int err;
|
|
|
|
if (WARN_ON(!ops || !ops->provision || !ops->unprovision ||
|
|
!ops->types_count || !ops->types_get))
|
|
return ERR_PTR(-EINVAL);
|
|
|
|
mutex_lock(&devlink->linecards_lock);
|
|
if (devlink_linecard_index_exists(devlink, linecard_index)) {
|
|
mutex_unlock(&devlink->linecards_lock);
|
|
return ERR_PTR(-EEXIST);
|
|
}
|
|
|
|
linecard = kzalloc(sizeof(*linecard), GFP_KERNEL);
|
|
if (!linecard) {
|
|
mutex_unlock(&devlink->linecards_lock);
|
|
return ERR_PTR(-ENOMEM);
|
|
}
|
|
|
|
linecard->devlink = devlink;
|
|
linecard->index = linecard_index;
|
|
linecard->ops = ops;
|
|
linecard->priv = priv;
|
|
linecard->state = DEVLINK_LINECARD_STATE_UNPROVISIONED;
|
|
mutex_init(&linecard->state_lock);
|
|
|
|
err = devlink_linecard_types_init(linecard);
|
|
if (err) {
|
|
mutex_destroy(&linecard->state_lock);
|
|
kfree(linecard);
|
|
mutex_unlock(&devlink->linecards_lock);
|
|
return ERR_PTR(err);
|
|
}
|
|
|
|
list_add_tail(&linecard->list, &devlink->linecard_list);
|
|
refcount_set(&linecard->refcount, 1);
|
|
mutex_unlock(&devlink->linecards_lock);
|
|
devlink_linecard_notify(linecard, DEVLINK_CMD_LINECARD_NEW);
|
|
return linecard;
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_linecard_create);
|
|
|
|
/**
|
|
* devlink_linecard_destroy - Destroy devlink linecard
|
|
*
|
|
* @linecard: devlink linecard
|
|
*/
|
|
void devlink_linecard_destroy(struct devlink_linecard *linecard)
|
|
{
|
|
struct devlink *devlink = linecard->devlink;
|
|
|
|
devlink_linecard_notify(linecard, DEVLINK_CMD_LINECARD_DEL);
|
|
mutex_lock(&devlink->linecards_lock);
|
|
list_del(&linecard->list);
|
|
devlink_linecard_types_fini(linecard);
|
|
mutex_unlock(&devlink->linecards_lock);
|
|
devlink_linecard_put(linecard);
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_linecard_destroy);
|
|
|
|
/**
|
|
* devlink_linecard_provision_set - Set provisioning on linecard
|
|
*
|
|
* @linecard: devlink linecard
|
|
* @type: linecard type
|
|
*
|
|
* This is either called directly from the provision() op call or
|
|
* as a result of the provision() op call asynchronously.
|
|
*/
|
|
void devlink_linecard_provision_set(struct devlink_linecard *linecard,
|
|
const char *type)
|
|
{
|
|
mutex_lock(&linecard->state_lock);
|
|
WARN_ON(linecard->type && strcmp(linecard->type, type));
|
|
linecard->state = DEVLINK_LINECARD_STATE_PROVISIONED;
|
|
linecard->type = type;
|
|
devlink_linecard_notify(linecard, DEVLINK_CMD_LINECARD_NEW);
|
|
mutex_unlock(&linecard->state_lock);
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_linecard_provision_set);
|
|
|
|
/**
|
|
* devlink_linecard_provision_clear - Clear provisioning on linecard
|
|
*
|
|
* @linecard: devlink linecard
|
|
*
|
|
* This is either called directly from the unprovision() op call or
|
|
* as a result of the unprovision() op call asynchronously.
|
|
*/
|
|
void devlink_linecard_provision_clear(struct devlink_linecard *linecard)
|
|
{
|
|
mutex_lock(&linecard->state_lock);
|
|
linecard->state = DEVLINK_LINECARD_STATE_UNPROVISIONED;
|
|
linecard->type = NULL;
|
|
devlink_linecard_notify(linecard, DEVLINK_CMD_LINECARD_NEW);
|
|
mutex_unlock(&linecard->state_lock);
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_linecard_provision_clear);
|
|
|
|
/**
|
|
* devlink_linecard_provision_fail - Fail provisioning on linecard
|
|
*
|
|
* @linecard: devlink linecard
|
|
*
|
|
* This is either called directly from the provision() op call or
|
|
* as a result of the provision() op call asynchronously.
|
|
*/
|
|
void devlink_linecard_provision_fail(struct devlink_linecard *linecard)
|
|
{
|
|
mutex_lock(&linecard->state_lock);
|
|
linecard->state = DEVLINK_LINECARD_STATE_PROVISIONING_FAILED;
|
|
devlink_linecard_notify(linecard, DEVLINK_CMD_LINECARD_NEW);
|
|
mutex_unlock(&linecard->state_lock);
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_linecard_provision_fail);
|
|
|
|
/**
|
|
* devlink_linecard_activate - Set linecard active
|
|
*
|
|
* @linecard: devlink linecard
|
|
*/
|
|
void devlink_linecard_activate(struct devlink_linecard *linecard)
|
|
{
|
|
mutex_lock(&linecard->state_lock);
|
|
WARN_ON(linecard->state != DEVLINK_LINECARD_STATE_PROVISIONED);
|
|
linecard->state = DEVLINK_LINECARD_STATE_ACTIVE;
|
|
devlink_linecard_notify(linecard, DEVLINK_CMD_LINECARD_NEW);
|
|
mutex_unlock(&linecard->state_lock);
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_linecard_activate);
|
|
|
|
/**
|
|
* devlink_linecard_deactivate - Set linecard inactive
|
|
*
|
|
* @linecard: devlink linecard
|
|
*/
|
|
void devlink_linecard_deactivate(struct devlink_linecard *linecard)
|
|
{
|
|
mutex_lock(&linecard->state_lock);
|
|
switch (linecard->state) {
|
|
case DEVLINK_LINECARD_STATE_ACTIVE:
|
|
linecard->state = DEVLINK_LINECARD_STATE_PROVISIONED;
|
|
devlink_linecard_notify(linecard, DEVLINK_CMD_LINECARD_NEW);
|
|
break;
|
|
case DEVLINK_LINECARD_STATE_UNPROVISIONING:
|
|
/* Line card is being deactivated as part
|
|
* of unprovisioning flow.
|
|
*/
|
|
break;
|
|
default:
|
|
WARN_ON(1);
|
|
break;
|
|
}
|
|
mutex_unlock(&linecard->state_lock);
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_linecard_deactivate);
|
|
|
|
int devlink_sb_register(struct devlink *devlink, unsigned int sb_index,
|
|
u32 size, u16 ingress_pools_count,
|
|
u16 egress_pools_count, u16 ingress_tc_count,
|
|
u16 egress_tc_count)
|
|
{
|
|
struct devlink_sb *devlink_sb;
|
|
int err = 0;
|
|
|
|
mutex_lock(&devlink->lock);
|
|
if (devlink_sb_index_exists(devlink, sb_index)) {
|
|
err = -EEXIST;
|
|
goto unlock;
|
|
}
|
|
|
|
devlink_sb = kzalloc(sizeof(*devlink_sb), GFP_KERNEL);
|
|
if (!devlink_sb) {
|
|
err = -ENOMEM;
|
|
goto unlock;
|
|
}
|
|
devlink_sb->index = sb_index;
|
|
devlink_sb->size = size;
|
|
devlink_sb->ingress_pools_count = ingress_pools_count;
|
|
devlink_sb->egress_pools_count = egress_pools_count;
|
|
devlink_sb->ingress_tc_count = ingress_tc_count;
|
|
devlink_sb->egress_tc_count = egress_tc_count;
|
|
list_add_tail(&devlink_sb->list, &devlink->sb_list);
|
|
unlock:
|
|
mutex_unlock(&devlink->lock);
|
|
return err;
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_sb_register);
|
|
|
|
void devlink_sb_unregister(struct devlink *devlink, unsigned int sb_index)
|
|
{
|
|
struct devlink_sb *devlink_sb;
|
|
|
|
mutex_lock(&devlink->lock);
|
|
devlink_sb = devlink_sb_get_by_index(devlink, sb_index);
|
|
WARN_ON(!devlink_sb);
|
|
list_del(&devlink_sb->list);
|
|
mutex_unlock(&devlink->lock);
|
|
kfree(devlink_sb);
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_sb_unregister);
|
|
|
|
/**
|
|
* devlink_dpipe_headers_register - register dpipe headers
|
|
*
|
|
* @devlink: devlink
|
|
* @dpipe_headers: dpipe header array
|
|
*
|
|
* Register the headers supported by hardware.
|
|
*/
|
|
int devlink_dpipe_headers_register(struct devlink *devlink,
|
|
struct devlink_dpipe_headers *dpipe_headers)
|
|
{
|
|
mutex_lock(&devlink->lock);
|
|
devlink->dpipe_headers = dpipe_headers;
|
|
mutex_unlock(&devlink->lock);
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_dpipe_headers_register);
|
|
|
|
/**
|
|
* devlink_dpipe_headers_unregister - unregister dpipe headers
|
|
*
|
|
* @devlink: devlink
|
|
*
|
|
* Unregister the headers supported by hardware.
|
|
*/
|
|
void devlink_dpipe_headers_unregister(struct devlink *devlink)
|
|
{
|
|
mutex_lock(&devlink->lock);
|
|
devlink->dpipe_headers = NULL;
|
|
mutex_unlock(&devlink->lock);
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_dpipe_headers_unregister);
|
|
|
|
/**
|
|
* devlink_dpipe_table_counter_enabled - check if counter allocation
|
|
* required
|
|
* @devlink: devlink
|
|
* @table_name: tables name
|
|
*
|
|
* Used by driver to check if counter allocation is required.
|
|
* After counter allocation is turned on the table entries
|
|
* are updated to include counter statistics.
|
|
*
|
|
* After that point on the driver must respect the counter
|
|
* state so that each entry added to the table is added
|
|
* with a counter.
|
|
*/
|
|
bool devlink_dpipe_table_counter_enabled(struct devlink *devlink,
|
|
const char *table_name)
|
|
{
|
|
struct devlink_dpipe_table *table;
|
|
bool enabled;
|
|
|
|
rcu_read_lock();
|
|
table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
|
|
table_name, devlink);
|
|
enabled = false;
|
|
if (table)
|
|
enabled = table->counters_enabled;
|
|
rcu_read_unlock();
|
|
return enabled;
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_dpipe_table_counter_enabled);
|
|
|
|
/**
|
|
* devlink_dpipe_table_register - register dpipe table
|
|
*
|
|
* @devlink: devlink
|
|
* @table_name: table name
|
|
* @table_ops: table ops
|
|
* @priv: priv
|
|
* @counter_control_extern: external control for counters
|
|
*/
|
|
int devlink_dpipe_table_register(struct devlink *devlink,
|
|
const char *table_name,
|
|
struct devlink_dpipe_table_ops *table_ops,
|
|
void *priv, bool counter_control_extern)
|
|
{
|
|
struct devlink_dpipe_table *table;
|
|
int err = 0;
|
|
|
|
if (WARN_ON(!table_ops->size_get))
|
|
return -EINVAL;
|
|
|
|
mutex_lock(&devlink->lock);
|
|
|
|
if (devlink_dpipe_table_find(&devlink->dpipe_table_list, table_name,
|
|
devlink)) {
|
|
err = -EEXIST;
|
|
goto unlock;
|
|
}
|
|
|
|
table = kzalloc(sizeof(*table), GFP_KERNEL);
|
|
if (!table) {
|
|
err = -ENOMEM;
|
|
goto unlock;
|
|
}
|
|
|
|
table->name = table_name;
|
|
table->table_ops = table_ops;
|
|
table->priv = priv;
|
|
table->counter_control_extern = counter_control_extern;
|
|
|
|
list_add_tail_rcu(&table->list, &devlink->dpipe_table_list);
|
|
unlock:
|
|
mutex_unlock(&devlink->lock);
|
|
return err;
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_dpipe_table_register);
|
|
|
|
/**
|
|
* devlink_dpipe_table_unregister - unregister dpipe table
|
|
*
|
|
* @devlink: devlink
|
|
* @table_name: table name
|
|
*/
|
|
void devlink_dpipe_table_unregister(struct devlink *devlink,
|
|
const char *table_name)
|
|
{
|
|
struct devlink_dpipe_table *table;
|
|
|
|
mutex_lock(&devlink->lock);
|
|
table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
|
|
table_name, devlink);
|
|
if (!table)
|
|
goto unlock;
|
|
list_del_rcu(&table->list);
|
|
mutex_unlock(&devlink->lock);
|
|
kfree_rcu(table, rcu);
|
|
return;
|
|
unlock:
|
|
mutex_unlock(&devlink->lock);
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_dpipe_table_unregister);
|
|
|
|
/**
|
|
* devlink_resource_register - devlink resource register
|
|
*
|
|
* @devlink: devlink
|
|
* @resource_name: resource's name
|
|
* @resource_size: resource's size
|
|
* @resource_id: resource's id
|
|
* @parent_resource_id: resource's parent id
|
|
* @size_params: size parameters
|
|
*
|
|
* Generic resources should reuse the same names across drivers.
|
|
* Please see the generic resources list at:
|
|
* Documentation/networking/devlink/devlink-resource.rst
|
|
*/
|
|
int devlink_resource_register(struct devlink *devlink,
|
|
const char *resource_name,
|
|
u64 resource_size,
|
|
u64 resource_id,
|
|
u64 parent_resource_id,
|
|
const struct devlink_resource_size_params *size_params)
|
|
{
|
|
struct devlink_resource *resource;
|
|
struct list_head *resource_list;
|
|
bool top_hierarchy;
|
|
int err = 0;
|
|
|
|
top_hierarchy = parent_resource_id == DEVLINK_RESOURCE_ID_PARENT_TOP;
|
|
|
|
mutex_lock(&devlink->lock);
|
|
resource = devlink_resource_find(devlink, NULL, resource_id);
|
|
if (resource) {
|
|
err = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
resource = kzalloc(sizeof(*resource), GFP_KERNEL);
|
|
if (!resource) {
|
|
err = -ENOMEM;
|
|
goto out;
|
|
}
|
|
|
|
if (top_hierarchy) {
|
|
resource_list = &devlink->resource_list;
|
|
} else {
|
|
struct devlink_resource *parent_resource;
|
|
|
|
parent_resource = devlink_resource_find(devlink, NULL,
|
|
parent_resource_id);
|
|
if (parent_resource) {
|
|
resource_list = &parent_resource->resource_list;
|
|
resource->parent = parent_resource;
|
|
} else {
|
|
kfree(resource);
|
|
err = -EINVAL;
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
resource->name = resource_name;
|
|
resource->size = resource_size;
|
|
resource->size_new = resource_size;
|
|
resource->id = resource_id;
|
|
resource->size_valid = true;
|
|
memcpy(&resource->size_params, size_params,
|
|
sizeof(resource->size_params));
|
|
INIT_LIST_HEAD(&resource->resource_list);
|
|
list_add_tail(&resource->list, resource_list);
|
|
out:
|
|
mutex_unlock(&devlink->lock);
|
|
return err;
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_resource_register);
|
|
|
|
static void devlink_resource_unregister(struct devlink *devlink,
|
|
struct devlink_resource *resource)
|
|
{
|
|
struct devlink_resource *tmp, *child_resource;
|
|
|
|
list_for_each_entry_safe(child_resource, tmp, &resource->resource_list,
|
|
list) {
|
|
devlink_resource_unregister(devlink, child_resource);
|
|
list_del(&child_resource->list);
|
|
kfree(child_resource);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* devlink_resources_unregister - free all resources
|
|
*
|
|
* @devlink: devlink
|
|
*/
|
|
void devlink_resources_unregister(struct devlink *devlink)
|
|
{
|
|
struct devlink_resource *tmp, *child_resource;
|
|
|
|
mutex_lock(&devlink->lock);
|
|
|
|
list_for_each_entry_safe(child_resource, tmp, &devlink->resource_list,
|
|
list) {
|
|
devlink_resource_unregister(devlink, child_resource);
|
|
list_del(&child_resource->list);
|
|
kfree(child_resource);
|
|
}
|
|
|
|
mutex_unlock(&devlink->lock);
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_resources_unregister);
|
|
|
|
/**
|
|
* devlink_resource_size_get - get and update size
|
|
*
|
|
* @devlink: devlink
|
|
* @resource_id: the requested resource id
|
|
* @p_resource_size: ptr to update
|
|
*/
|
|
int devlink_resource_size_get(struct devlink *devlink,
|
|
u64 resource_id,
|
|
u64 *p_resource_size)
|
|
{
|
|
struct devlink_resource *resource;
|
|
int err = 0;
|
|
|
|
mutex_lock(&devlink->lock);
|
|
resource = devlink_resource_find(devlink, NULL, resource_id);
|
|
if (!resource) {
|
|
err = -EINVAL;
|
|
goto out;
|
|
}
|
|
*p_resource_size = resource->size_new;
|
|
resource->size = resource->size_new;
|
|
out:
|
|
mutex_unlock(&devlink->lock);
|
|
return err;
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_resource_size_get);
|
|
|
|
/**
|
|
* devlink_dpipe_table_resource_set - set the resource id
|
|
*
|
|
* @devlink: devlink
|
|
* @table_name: table name
|
|
* @resource_id: resource id
|
|
* @resource_units: number of resource's units consumed per table's entry
|
|
*/
|
|
int devlink_dpipe_table_resource_set(struct devlink *devlink,
|
|
const char *table_name, u64 resource_id,
|
|
u64 resource_units)
|
|
{
|
|
struct devlink_dpipe_table *table;
|
|
int err = 0;
|
|
|
|
mutex_lock(&devlink->lock);
|
|
table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
|
|
table_name, devlink);
|
|
if (!table) {
|
|
err = -EINVAL;
|
|
goto out;
|
|
}
|
|
table->resource_id = resource_id;
|
|
table->resource_units = resource_units;
|
|
table->resource_valid = true;
|
|
out:
|
|
mutex_unlock(&devlink->lock);
|
|
return err;
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_dpipe_table_resource_set);
|
|
|
|
/**
|
|
* devlink_resource_occ_get_register - register occupancy getter
|
|
*
|
|
* @devlink: devlink
|
|
* @resource_id: resource id
|
|
* @occ_get: occupancy getter callback
|
|
* @occ_get_priv: occupancy getter callback priv
|
|
*/
|
|
void devlink_resource_occ_get_register(struct devlink *devlink,
|
|
u64 resource_id,
|
|
devlink_resource_occ_get_t *occ_get,
|
|
void *occ_get_priv)
|
|
{
|
|
struct devlink_resource *resource;
|
|
|
|
mutex_lock(&devlink->lock);
|
|
resource = devlink_resource_find(devlink, NULL, resource_id);
|
|
if (WARN_ON(!resource))
|
|
goto out;
|
|
WARN_ON(resource->occ_get);
|
|
|
|
resource->occ_get = occ_get;
|
|
resource->occ_get_priv = occ_get_priv;
|
|
out:
|
|
mutex_unlock(&devlink->lock);
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_resource_occ_get_register);
|
|
|
|
/**
|
|
* devlink_resource_occ_get_unregister - unregister occupancy getter
|
|
*
|
|
* @devlink: devlink
|
|
* @resource_id: resource id
|
|
*/
|
|
void devlink_resource_occ_get_unregister(struct devlink *devlink,
|
|
u64 resource_id)
|
|
{
|
|
struct devlink_resource *resource;
|
|
|
|
mutex_lock(&devlink->lock);
|
|
resource = devlink_resource_find(devlink, NULL, resource_id);
|
|
if (WARN_ON(!resource))
|
|
goto out;
|
|
WARN_ON(!resource->occ_get);
|
|
|
|
resource->occ_get = NULL;
|
|
resource->occ_get_priv = NULL;
|
|
out:
|
|
mutex_unlock(&devlink->lock);
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_resource_occ_get_unregister);
|
|
|
|
static int devlink_param_verify(const struct devlink_param *param)
|
|
{
|
|
if (!param || !param->name || !param->supported_cmodes)
|
|
return -EINVAL;
|
|
if (param->generic)
|
|
return devlink_param_generic_verify(param);
|
|
else
|
|
return devlink_param_driver_verify(param);
|
|
}
|
|
|
|
/**
|
|
* devlink_params_register - register configuration parameters
|
|
*
|
|
* @devlink: devlink
|
|
* @params: configuration parameters array
|
|
* @params_count: number of parameters provided
|
|
*
|
|
* Register the configuration parameters supported by the driver.
|
|
*/
|
|
int devlink_params_register(struct devlink *devlink,
|
|
const struct devlink_param *params,
|
|
size_t params_count)
|
|
{
|
|
const struct devlink_param *param = params;
|
|
int i, err;
|
|
|
|
ASSERT_DEVLINK_NOT_REGISTERED(devlink);
|
|
|
|
for (i = 0; i < params_count; i++, param++) {
|
|
err = devlink_param_register(devlink, param);
|
|
if (err)
|
|
goto rollback;
|
|
}
|
|
return 0;
|
|
|
|
rollback:
|
|
if (!i)
|
|
return err;
|
|
|
|
for (param--; i > 0; i--, param--)
|
|
devlink_param_unregister(devlink, param);
|
|
return err;
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_params_register);
|
|
|
|
/**
|
|
* devlink_params_unregister - unregister configuration parameters
|
|
* @devlink: devlink
|
|
* @params: configuration parameters to unregister
|
|
* @params_count: number of parameters provided
|
|
*/
|
|
void devlink_params_unregister(struct devlink *devlink,
|
|
const struct devlink_param *params,
|
|
size_t params_count)
|
|
{
|
|
const struct devlink_param *param = params;
|
|
int i;
|
|
|
|
ASSERT_DEVLINK_NOT_REGISTERED(devlink);
|
|
|
|
for (i = 0; i < params_count; i++, param++)
|
|
devlink_param_unregister(devlink, param);
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_params_unregister);
|
|
|
|
/**
|
|
* devlink_param_register - register one configuration parameter
|
|
*
|
|
* @devlink: devlink
|
|
* @param: one configuration parameter
|
|
*
|
|
* Register the configuration parameter supported by the driver.
|
|
* Return: returns 0 on successful registration or error code otherwise.
|
|
*/
|
|
int devlink_param_register(struct devlink *devlink,
|
|
const struct devlink_param *param)
|
|
{
|
|
struct devlink_param_item *param_item;
|
|
|
|
ASSERT_DEVLINK_NOT_REGISTERED(devlink);
|
|
|
|
WARN_ON(devlink_param_verify(param));
|
|
WARN_ON(devlink_param_find_by_name(&devlink->param_list, param->name));
|
|
|
|
if (param->supported_cmodes == BIT(DEVLINK_PARAM_CMODE_DRIVERINIT))
|
|
WARN_ON(param->get || param->set);
|
|
else
|
|
WARN_ON(!param->get || !param->set);
|
|
|
|
param_item = kzalloc(sizeof(*param_item), GFP_KERNEL);
|
|
if (!param_item)
|
|
return -ENOMEM;
|
|
|
|
param_item->param = param;
|
|
|
|
list_add_tail(¶m_item->list, &devlink->param_list);
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_param_register);
|
|
|
|
/**
|
|
* devlink_param_unregister - unregister one configuration parameter
|
|
* @devlink: devlink
|
|
* @param: configuration parameter to unregister
|
|
*/
|
|
void devlink_param_unregister(struct devlink *devlink,
|
|
const struct devlink_param *param)
|
|
{
|
|
struct devlink_param_item *param_item;
|
|
|
|
ASSERT_DEVLINK_NOT_REGISTERED(devlink);
|
|
|
|
param_item =
|
|
devlink_param_find_by_name(&devlink->param_list, param->name);
|
|
WARN_ON(!param_item);
|
|
list_del(¶m_item->list);
|
|
kfree(param_item);
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_param_unregister);
|
|
|
|
/**
|
|
* devlink_param_driverinit_value_get - get configuration parameter
|
|
* value for driver initializing
|
|
*
|
|
* @devlink: devlink
|
|
* @param_id: parameter ID
|
|
* @init_val: value of parameter in driverinit configuration mode
|
|
*
|
|
* This function should be used by the driver to get driverinit
|
|
* configuration for initialization after reload command.
|
|
*/
|
|
int devlink_param_driverinit_value_get(struct devlink *devlink, u32 param_id,
|
|
union devlink_param_value *init_val)
|
|
{
|
|
struct devlink_param_item *param_item;
|
|
|
|
if (!devlink_reload_supported(devlink->ops))
|
|
return -EOPNOTSUPP;
|
|
|
|
param_item = devlink_param_find_by_id(&devlink->param_list, param_id);
|
|
if (!param_item)
|
|
return -EINVAL;
|
|
|
|
if (!param_item->driverinit_value_valid ||
|
|
!devlink_param_cmode_is_supported(param_item->param,
|
|
DEVLINK_PARAM_CMODE_DRIVERINIT))
|
|
return -EOPNOTSUPP;
|
|
|
|
if (param_item->param->type == DEVLINK_PARAM_TYPE_STRING)
|
|
strcpy(init_val->vstr, param_item->driverinit_value.vstr);
|
|
else
|
|
*init_val = param_item->driverinit_value;
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_param_driverinit_value_get);
|
|
|
|
/**
|
|
* devlink_param_driverinit_value_set - set value of configuration
|
|
* parameter for driverinit
|
|
* configuration mode
|
|
*
|
|
* @devlink: devlink
|
|
* @param_id: parameter ID
|
|
* @init_val: value of parameter to set for driverinit configuration mode
|
|
*
|
|
* This function should be used by the driver to set driverinit
|
|
* configuration mode default value.
|
|
*/
|
|
int devlink_param_driverinit_value_set(struct devlink *devlink, u32 param_id,
|
|
union devlink_param_value init_val)
|
|
{
|
|
struct devlink_param_item *param_item;
|
|
|
|
ASSERT_DEVLINK_NOT_REGISTERED(devlink);
|
|
|
|
param_item = devlink_param_find_by_id(&devlink->param_list, param_id);
|
|
if (!param_item)
|
|
return -EINVAL;
|
|
|
|
if (!devlink_param_cmode_is_supported(param_item->param,
|
|
DEVLINK_PARAM_CMODE_DRIVERINIT))
|
|
return -EOPNOTSUPP;
|
|
|
|
if (param_item->param->type == DEVLINK_PARAM_TYPE_STRING)
|
|
strcpy(param_item->driverinit_value.vstr, init_val.vstr);
|
|
else
|
|
param_item->driverinit_value = init_val;
|
|
param_item->driverinit_value_valid = true;
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_param_driverinit_value_set);
|
|
|
|
/**
|
|
* devlink_param_value_changed - notify devlink on a parameter's value
|
|
* change. Should be called by the driver
|
|
* right after the change.
|
|
*
|
|
* @devlink: devlink
|
|
* @param_id: parameter ID
|
|
*
|
|
* This function should be used by the driver to notify devlink on value
|
|
* change, excluding driverinit configuration mode.
|
|
* For driverinit configuration mode driver should use the function
|
|
*/
|
|
void devlink_param_value_changed(struct devlink *devlink, u32 param_id)
|
|
{
|
|
struct devlink_param_item *param_item;
|
|
|
|
param_item = devlink_param_find_by_id(&devlink->param_list, param_id);
|
|
WARN_ON(!param_item);
|
|
|
|
devlink_param_notify(devlink, 0, param_item, DEVLINK_CMD_PARAM_NEW);
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_param_value_changed);
|
|
|
|
/**
|
|
* devlink_region_create - create a new address region
|
|
*
|
|
* @devlink: devlink
|
|
* @ops: region operations and name
|
|
* @region_max_snapshots: Maximum supported number of snapshots for region
|
|
* @region_size: size of region
|
|
*/
|
|
struct devlink_region *
|
|
devlink_region_create(struct devlink *devlink,
|
|
const struct devlink_region_ops *ops,
|
|
u32 region_max_snapshots, u64 region_size)
|
|
{
|
|
struct devlink_region *region;
|
|
int err = 0;
|
|
|
|
if (WARN_ON(!ops) || WARN_ON(!ops->destructor))
|
|
return ERR_PTR(-EINVAL);
|
|
|
|
mutex_lock(&devlink->lock);
|
|
|
|
if (devlink_region_get_by_name(devlink, ops->name)) {
|
|
err = -EEXIST;
|
|
goto unlock;
|
|
}
|
|
|
|
region = kzalloc(sizeof(*region), GFP_KERNEL);
|
|
if (!region) {
|
|
err = -ENOMEM;
|
|
goto unlock;
|
|
}
|
|
|
|
region->devlink = devlink;
|
|
region->max_snapshots = region_max_snapshots;
|
|
region->ops = ops;
|
|
region->size = region_size;
|
|
INIT_LIST_HEAD(®ion->snapshot_list);
|
|
list_add_tail(®ion->list, &devlink->region_list);
|
|
devlink_nl_region_notify(region, NULL, DEVLINK_CMD_REGION_NEW);
|
|
|
|
mutex_unlock(&devlink->lock);
|
|
return region;
|
|
|
|
unlock:
|
|
mutex_unlock(&devlink->lock);
|
|
return ERR_PTR(err);
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_region_create);
|
|
|
|
/**
|
|
* devlink_port_region_create - create a new address region for a port
|
|
*
|
|
* @port: devlink port
|
|
* @ops: region operations and name
|
|
* @region_max_snapshots: Maximum supported number of snapshots for region
|
|
* @region_size: size of region
|
|
*/
|
|
struct devlink_region *
|
|
devlink_port_region_create(struct devlink_port *port,
|
|
const struct devlink_port_region_ops *ops,
|
|
u32 region_max_snapshots, u64 region_size)
|
|
{
|
|
struct devlink *devlink = port->devlink;
|
|
struct devlink_region *region;
|
|
int err = 0;
|
|
|
|
if (WARN_ON(!ops) || WARN_ON(!ops->destructor))
|
|
return ERR_PTR(-EINVAL);
|
|
|
|
mutex_lock(&devlink->lock);
|
|
|
|
if (devlink_port_region_get_by_name(port, ops->name)) {
|
|
err = -EEXIST;
|
|
goto unlock;
|
|
}
|
|
|
|
region = kzalloc(sizeof(*region), GFP_KERNEL);
|
|
if (!region) {
|
|
err = -ENOMEM;
|
|
goto unlock;
|
|
}
|
|
|
|
region->devlink = devlink;
|
|
region->port = port;
|
|
region->max_snapshots = region_max_snapshots;
|
|
region->port_ops = ops;
|
|
region->size = region_size;
|
|
INIT_LIST_HEAD(®ion->snapshot_list);
|
|
list_add_tail(®ion->list, &port->region_list);
|
|
devlink_nl_region_notify(region, NULL, DEVLINK_CMD_REGION_NEW);
|
|
|
|
mutex_unlock(&devlink->lock);
|
|
return region;
|
|
|
|
unlock:
|
|
mutex_unlock(&devlink->lock);
|
|
return ERR_PTR(err);
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_port_region_create);
|
|
|
|
/**
|
|
* devlink_region_destroy - destroy address region
|
|
*
|
|
* @region: devlink region to destroy
|
|
*/
|
|
void devlink_region_destroy(struct devlink_region *region)
|
|
{
|
|
struct devlink *devlink = region->devlink;
|
|
struct devlink_snapshot *snapshot, *ts;
|
|
|
|
mutex_lock(&devlink->lock);
|
|
|
|
/* Free all snapshots of region */
|
|
list_for_each_entry_safe(snapshot, ts, ®ion->snapshot_list, list)
|
|
devlink_region_snapshot_del(region, snapshot);
|
|
|
|
list_del(®ion->list);
|
|
|
|
devlink_nl_region_notify(region, NULL, DEVLINK_CMD_REGION_DEL);
|
|
mutex_unlock(&devlink->lock);
|
|
kfree(region);
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_region_destroy);
|
|
|
|
/**
|
|
* devlink_region_snapshot_id_get - get snapshot ID
|
|
*
|
|
* This callback should be called when adding a new snapshot,
|
|
* Driver should use the same id for multiple snapshots taken
|
|
* on multiple regions at the same time/by the same trigger.
|
|
*
|
|
* The caller of this function must use devlink_region_snapshot_id_put
|
|
* when finished creating regions using this id.
|
|
*
|
|
* Returns zero on success, or a negative error code on failure.
|
|
*
|
|
* @devlink: devlink
|
|
* @id: storage to return id
|
|
*/
|
|
int devlink_region_snapshot_id_get(struct devlink *devlink, u32 *id)
|
|
{
|
|
int err;
|
|
|
|
mutex_lock(&devlink->lock);
|
|
err = __devlink_region_snapshot_id_get(devlink, id);
|
|
mutex_unlock(&devlink->lock);
|
|
|
|
return err;
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_region_snapshot_id_get);
|
|
|
|
/**
|
|
* devlink_region_snapshot_id_put - put snapshot ID reference
|
|
*
|
|
* This should be called by a driver after finishing creating snapshots
|
|
* with an id. Doing so ensures that the ID can later be released in the
|
|
* event that all snapshots using it have been destroyed.
|
|
*
|
|
* @devlink: devlink
|
|
* @id: id to release reference on
|
|
*/
|
|
void devlink_region_snapshot_id_put(struct devlink *devlink, u32 id)
|
|
{
|
|
mutex_lock(&devlink->lock);
|
|
__devlink_snapshot_id_decrement(devlink, id);
|
|
mutex_unlock(&devlink->lock);
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_region_snapshot_id_put);
|
|
|
|
/**
|
|
* devlink_region_snapshot_create - create a new snapshot
|
|
* This will add a new snapshot of a region. The snapshot
|
|
* will be stored on the region struct and can be accessed
|
|
* from devlink. This is useful for future analyses of snapshots.
|
|
* Multiple snapshots can be created on a region.
|
|
* The @snapshot_id should be obtained using the getter function.
|
|
*
|
|
* @region: devlink region of the snapshot
|
|
* @data: snapshot data
|
|
* @snapshot_id: snapshot id to be created
|
|
*/
|
|
int devlink_region_snapshot_create(struct devlink_region *region,
|
|
u8 *data, u32 snapshot_id)
|
|
{
|
|
struct devlink *devlink = region->devlink;
|
|
int err;
|
|
|
|
mutex_lock(&devlink->lock);
|
|
err = __devlink_region_snapshot_create(region, data, snapshot_id);
|
|
mutex_unlock(&devlink->lock);
|
|
|
|
return err;
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_region_snapshot_create);
|
|
|
|
#define DEVLINK_TRAP(_id, _type) \
|
|
{ \
|
|
.type = DEVLINK_TRAP_TYPE_##_type, \
|
|
.id = DEVLINK_TRAP_GENERIC_ID_##_id, \
|
|
.name = DEVLINK_TRAP_GENERIC_NAME_##_id, \
|
|
}
|
|
|
|
static const struct devlink_trap devlink_trap_generic[] = {
|
|
DEVLINK_TRAP(SMAC_MC, DROP),
|
|
DEVLINK_TRAP(VLAN_TAG_MISMATCH, DROP),
|
|
DEVLINK_TRAP(INGRESS_VLAN_FILTER, DROP),
|
|
DEVLINK_TRAP(INGRESS_STP_FILTER, DROP),
|
|
DEVLINK_TRAP(EMPTY_TX_LIST, DROP),
|
|
DEVLINK_TRAP(PORT_LOOPBACK_FILTER, DROP),
|
|
DEVLINK_TRAP(BLACKHOLE_ROUTE, DROP),
|
|
DEVLINK_TRAP(TTL_ERROR, EXCEPTION),
|
|
DEVLINK_TRAP(TAIL_DROP, DROP),
|
|
DEVLINK_TRAP(NON_IP_PACKET, DROP),
|
|
DEVLINK_TRAP(UC_DIP_MC_DMAC, DROP),
|
|
DEVLINK_TRAP(DIP_LB, DROP),
|
|
DEVLINK_TRAP(SIP_MC, DROP),
|
|
DEVLINK_TRAP(SIP_LB, DROP),
|
|
DEVLINK_TRAP(CORRUPTED_IP_HDR, DROP),
|
|
DEVLINK_TRAP(IPV4_SIP_BC, DROP),
|
|
DEVLINK_TRAP(IPV6_MC_DIP_RESERVED_SCOPE, DROP),
|
|
DEVLINK_TRAP(IPV6_MC_DIP_INTERFACE_LOCAL_SCOPE, DROP),
|
|
DEVLINK_TRAP(MTU_ERROR, EXCEPTION),
|
|
DEVLINK_TRAP(UNRESOLVED_NEIGH, EXCEPTION),
|
|
DEVLINK_TRAP(RPF, EXCEPTION),
|
|
DEVLINK_TRAP(REJECT_ROUTE, EXCEPTION),
|
|
DEVLINK_TRAP(IPV4_LPM_UNICAST_MISS, EXCEPTION),
|
|
DEVLINK_TRAP(IPV6_LPM_UNICAST_MISS, EXCEPTION),
|
|
DEVLINK_TRAP(NON_ROUTABLE, DROP),
|
|
DEVLINK_TRAP(DECAP_ERROR, EXCEPTION),
|
|
DEVLINK_TRAP(OVERLAY_SMAC_MC, DROP),
|
|
DEVLINK_TRAP(INGRESS_FLOW_ACTION_DROP, DROP),
|
|
DEVLINK_TRAP(EGRESS_FLOW_ACTION_DROP, DROP),
|
|
DEVLINK_TRAP(STP, CONTROL),
|
|
DEVLINK_TRAP(LACP, CONTROL),
|
|
DEVLINK_TRAP(LLDP, CONTROL),
|
|
DEVLINK_TRAP(IGMP_QUERY, CONTROL),
|
|
DEVLINK_TRAP(IGMP_V1_REPORT, CONTROL),
|
|
DEVLINK_TRAP(IGMP_V2_REPORT, CONTROL),
|
|
DEVLINK_TRAP(IGMP_V3_REPORT, CONTROL),
|
|
DEVLINK_TRAP(IGMP_V2_LEAVE, CONTROL),
|
|
DEVLINK_TRAP(MLD_QUERY, CONTROL),
|
|
DEVLINK_TRAP(MLD_V1_REPORT, CONTROL),
|
|
DEVLINK_TRAP(MLD_V2_REPORT, CONTROL),
|
|
DEVLINK_TRAP(MLD_V1_DONE, CONTROL),
|
|
DEVLINK_TRAP(IPV4_DHCP, CONTROL),
|
|
DEVLINK_TRAP(IPV6_DHCP, CONTROL),
|
|
DEVLINK_TRAP(ARP_REQUEST, CONTROL),
|
|
DEVLINK_TRAP(ARP_RESPONSE, CONTROL),
|
|
DEVLINK_TRAP(ARP_OVERLAY, CONTROL),
|
|
DEVLINK_TRAP(IPV6_NEIGH_SOLICIT, CONTROL),
|
|
DEVLINK_TRAP(IPV6_NEIGH_ADVERT, CONTROL),
|
|
DEVLINK_TRAP(IPV4_BFD, CONTROL),
|
|
DEVLINK_TRAP(IPV6_BFD, CONTROL),
|
|
DEVLINK_TRAP(IPV4_OSPF, CONTROL),
|
|
DEVLINK_TRAP(IPV6_OSPF, CONTROL),
|
|
DEVLINK_TRAP(IPV4_BGP, CONTROL),
|
|
DEVLINK_TRAP(IPV6_BGP, CONTROL),
|
|
DEVLINK_TRAP(IPV4_VRRP, CONTROL),
|
|
DEVLINK_TRAP(IPV6_VRRP, CONTROL),
|
|
DEVLINK_TRAP(IPV4_PIM, CONTROL),
|
|
DEVLINK_TRAP(IPV6_PIM, CONTROL),
|
|
DEVLINK_TRAP(UC_LB, CONTROL),
|
|
DEVLINK_TRAP(LOCAL_ROUTE, CONTROL),
|
|
DEVLINK_TRAP(EXTERNAL_ROUTE, CONTROL),
|
|
DEVLINK_TRAP(IPV6_UC_DIP_LINK_LOCAL_SCOPE, CONTROL),
|
|
DEVLINK_TRAP(IPV6_DIP_ALL_NODES, CONTROL),
|
|
DEVLINK_TRAP(IPV6_DIP_ALL_ROUTERS, CONTROL),
|
|
DEVLINK_TRAP(IPV6_ROUTER_SOLICIT, CONTROL),
|
|
DEVLINK_TRAP(IPV6_ROUTER_ADVERT, CONTROL),
|
|
DEVLINK_TRAP(IPV6_REDIRECT, CONTROL),
|
|
DEVLINK_TRAP(IPV4_ROUTER_ALERT, CONTROL),
|
|
DEVLINK_TRAP(IPV6_ROUTER_ALERT, CONTROL),
|
|
DEVLINK_TRAP(PTP_EVENT, CONTROL),
|
|
DEVLINK_TRAP(PTP_GENERAL, CONTROL),
|
|
DEVLINK_TRAP(FLOW_ACTION_SAMPLE, CONTROL),
|
|
DEVLINK_TRAP(FLOW_ACTION_TRAP, CONTROL),
|
|
DEVLINK_TRAP(EARLY_DROP, DROP),
|
|
DEVLINK_TRAP(VXLAN_PARSING, DROP),
|
|
DEVLINK_TRAP(LLC_SNAP_PARSING, DROP),
|
|
DEVLINK_TRAP(VLAN_PARSING, DROP),
|
|
DEVLINK_TRAP(PPPOE_PPP_PARSING, DROP),
|
|
DEVLINK_TRAP(MPLS_PARSING, DROP),
|
|
DEVLINK_TRAP(ARP_PARSING, DROP),
|
|
DEVLINK_TRAP(IP_1_PARSING, DROP),
|
|
DEVLINK_TRAP(IP_N_PARSING, DROP),
|
|
DEVLINK_TRAP(GRE_PARSING, DROP),
|
|
DEVLINK_TRAP(UDP_PARSING, DROP),
|
|
DEVLINK_TRAP(TCP_PARSING, DROP),
|
|
DEVLINK_TRAP(IPSEC_PARSING, DROP),
|
|
DEVLINK_TRAP(SCTP_PARSING, DROP),
|
|
DEVLINK_TRAP(DCCP_PARSING, DROP),
|
|
DEVLINK_TRAP(GTP_PARSING, DROP),
|
|
DEVLINK_TRAP(ESP_PARSING, DROP),
|
|
DEVLINK_TRAP(BLACKHOLE_NEXTHOP, DROP),
|
|
DEVLINK_TRAP(DMAC_FILTER, DROP),
|
|
};
|
|
|
|
#define DEVLINK_TRAP_GROUP(_id) \
|
|
{ \
|
|
.id = DEVLINK_TRAP_GROUP_GENERIC_ID_##_id, \
|
|
.name = DEVLINK_TRAP_GROUP_GENERIC_NAME_##_id, \
|
|
}
|
|
|
|
static const struct devlink_trap_group devlink_trap_group_generic[] = {
|
|
DEVLINK_TRAP_GROUP(L2_DROPS),
|
|
DEVLINK_TRAP_GROUP(L3_DROPS),
|
|
DEVLINK_TRAP_GROUP(L3_EXCEPTIONS),
|
|
DEVLINK_TRAP_GROUP(BUFFER_DROPS),
|
|
DEVLINK_TRAP_GROUP(TUNNEL_DROPS),
|
|
DEVLINK_TRAP_GROUP(ACL_DROPS),
|
|
DEVLINK_TRAP_GROUP(STP),
|
|
DEVLINK_TRAP_GROUP(LACP),
|
|
DEVLINK_TRAP_GROUP(LLDP),
|
|
DEVLINK_TRAP_GROUP(MC_SNOOPING),
|
|
DEVLINK_TRAP_GROUP(DHCP),
|
|
DEVLINK_TRAP_GROUP(NEIGH_DISCOVERY),
|
|
DEVLINK_TRAP_GROUP(BFD),
|
|
DEVLINK_TRAP_GROUP(OSPF),
|
|
DEVLINK_TRAP_GROUP(BGP),
|
|
DEVLINK_TRAP_GROUP(VRRP),
|
|
DEVLINK_TRAP_GROUP(PIM),
|
|
DEVLINK_TRAP_GROUP(UC_LB),
|
|
DEVLINK_TRAP_GROUP(LOCAL_DELIVERY),
|
|
DEVLINK_TRAP_GROUP(EXTERNAL_DELIVERY),
|
|
DEVLINK_TRAP_GROUP(IPV6),
|
|
DEVLINK_TRAP_GROUP(PTP_EVENT),
|
|
DEVLINK_TRAP_GROUP(PTP_GENERAL),
|
|
DEVLINK_TRAP_GROUP(ACL_SAMPLE),
|
|
DEVLINK_TRAP_GROUP(ACL_TRAP),
|
|
DEVLINK_TRAP_GROUP(PARSER_ERROR_DROPS),
|
|
};
|
|
|
|
static int devlink_trap_generic_verify(const struct devlink_trap *trap)
|
|
{
|
|
if (trap->id > DEVLINK_TRAP_GENERIC_ID_MAX)
|
|
return -EINVAL;
|
|
|
|
if (strcmp(trap->name, devlink_trap_generic[trap->id].name))
|
|
return -EINVAL;
|
|
|
|
if (trap->type != devlink_trap_generic[trap->id].type)
|
|
return -EINVAL;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int devlink_trap_driver_verify(const struct devlink_trap *trap)
|
|
{
|
|
int i;
|
|
|
|
if (trap->id <= DEVLINK_TRAP_GENERIC_ID_MAX)
|
|
return -EINVAL;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(devlink_trap_generic); i++) {
|
|
if (!strcmp(trap->name, devlink_trap_generic[i].name))
|
|
return -EEXIST;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int devlink_trap_verify(const struct devlink_trap *trap)
|
|
{
|
|
if (!trap || !trap->name)
|
|
return -EINVAL;
|
|
|
|
if (trap->generic)
|
|
return devlink_trap_generic_verify(trap);
|
|
else
|
|
return devlink_trap_driver_verify(trap);
|
|
}
|
|
|
|
static int
|
|
devlink_trap_group_generic_verify(const struct devlink_trap_group *group)
|
|
{
|
|
if (group->id > DEVLINK_TRAP_GROUP_GENERIC_ID_MAX)
|
|
return -EINVAL;
|
|
|
|
if (strcmp(group->name, devlink_trap_group_generic[group->id].name))
|
|
return -EINVAL;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
devlink_trap_group_driver_verify(const struct devlink_trap_group *group)
|
|
{
|
|
int i;
|
|
|
|
if (group->id <= DEVLINK_TRAP_GROUP_GENERIC_ID_MAX)
|
|
return -EINVAL;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(devlink_trap_group_generic); i++) {
|
|
if (!strcmp(group->name, devlink_trap_group_generic[i].name))
|
|
return -EEXIST;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int devlink_trap_group_verify(const struct devlink_trap_group *group)
|
|
{
|
|
if (group->generic)
|
|
return devlink_trap_group_generic_verify(group);
|
|
else
|
|
return devlink_trap_group_driver_verify(group);
|
|
}
|
|
|
|
static void
|
|
devlink_trap_group_notify(struct devlink *devlink,
|
|
const struct devlink_trap_group_item *group_item,
|
|
enum devlink_command cmd)
|
|
{
|
|
struct sk_buff *msg;
|
|
int err;
|
|
|
|
WARN_ON_ONCE(cmd != DEVLINK_CMD_TRAP_GROUP_NEW &&
|
|
cmd != DEVLINK_CMD_TRAP_GROUP_DEL);
|
|
if (!xa_get_mark(&devlinks, devlink->index, DEVLINK_REGISTERED))
|
|
return;
|
|
|
|
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
|
|
if (!msg)
|
|
return;
|
|
|
|
err = devlink_nl_trap_group_fill(msg, devlink, group_item, cmd, 0, 0,
|
|
0);
|
|
if (err) {
|
|
nlmsg_free(msg);
|
|
return;
|
|
}
|
|
|
|
genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
|
|
msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
|
|
}
|
|
|
|
static int
|
|
devlink_trap_item_group_link(struct devlink *devlink,
|
|
struct devlink_trap_item *trap_item)
|
|
{
|
|
u16 group_id = trap_item->trap->init_group_id;
|
|
struct devlink_trap_group_item *group_item;
|
|
|
|
group_item = devlink_trap_group_item_lookup_by_id(devlink, group_id);
|
|
if (WARN_ON_ONCE(!group_item))
|
|
return -EINVAL;
|
|
|
|
trap_item->group_item = group_item;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void devlink_trap_notify(struct devlink *devlink,
|
|
const struct devlink_trap_item *trap_item,
|
|
enum devlink_command cmd)
|
|
{
|
|
struct sk_buff *msg;
|
|
int err;
|
|
|
|
WARN_ON_ONCE(cmd != DEVLINK_CMD_TRAP_NEW &&
|
|
cmd != DEVLINK_CMD_TRAP_DEL);
|
|
if (!xa_get_mark(&devlinks, devlink->index, DEVLINK_REGISTERED))
|
|
return;
|
|
|
|
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
|
|
if (!msg)
|
|
return;
|
|
|
|
err = devlink_nl_trap_fill(msg, devlink, trap_item, cmd, 0, 0, 0);
|
|
if (err) {
|
|
nlmsg_free(msg);
|
|
return;
|
|
}
|
|
|
|
genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
|
|
msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
|
|
}
|
|
|
|
static int
|
|
devlink_trap_register(struct devlink *devlink,
|
|
const struct devlink_trap *trap, void *priv)
|
|
{
|
|
struct devlink_trap_item *trap_item;
|
|
int err;
|
|
|
|
if (devlink_trap_item_lookup(devlink, trap->name))
|
|
return -EEXIST;
|
|
|
|
trap_item = kzalloc(sizeof(*trap_item), GFP_KERNEL);
|
|
if (!trap_item)
|
|
return -ENOMEM;
|
|
|
|
trap_item->stats = netdev_alloc_pcpu_stats(struct devlink_stats);
|
|
if (!trap_item->stats) {
|
|
err = -ENOMEM;
|
|
goto err_stats_alloc;
|
|
}
|
|
|
|
trap_item->trap = trap;
|
|
trap_item->action = trap->init_action;
|
|
trap_item->priv = priv;
|
|
|
|
err = devlink_trap_item_group_link(devlink, trap_item);
|
|
if (err)
|
|
goto err_group_link;
|
|
|
|
err = devlink->ops->trap_init(devlink, trap, trap_item);
|
|
if (err)
|
|
goto err_trap_init;
|
|
|
|
list_add_tail(&trap_item->list, &devlink->trap_list);
|
|
devlink_trap_notify(devlink, trap_item, DEVLINK_CMD_TRAP_NEW);
|
|
|
|
return 0;
|
|
|
|
err_trap_init:
|
|
err_group_link:
|
|
free_percpu(trap_item->stats);
|
|
err_stats_alloc:
|
|
kfree(trap_item);
|
|
return err;
|
|
}
|
|
|
|
static void devlink_trap_unregister(struct devlink *devlink,
|
|
const struct devlink_trap *trap)
|
|
{
|
|
struct devlink_trap_item *trap_item;
|
|
|
|
trap_item = devlink_trap_item_lookup(devlink, trap->name);
|
|
if (WARN_ON_ONCE(!trap_item))
|
|
return;
|
|
|
|
devlink_trap_notify(devlink, trap_item, DEVLINK_CMD_TRAP_DEL);
|
|
list_del(&trap_item->list);
|
|
if (devlink->ops->trap_fini)
|
|
devlink->ops->trap_fini(devlink, trap, trap_item);
|
|
free_percpu(trap_item->stats);
|
|
kfree(trap_item);
|
|
}
|
|
|
|
static void devlink_trap_disable(struct devlink *devlink,
|
|
const struct devlink_trap *trap)
|
|
{
|
|
struct devlink_trap_item *trap_item;
|
|
|
|
trap_item = devlink_trap_item_lookup(devlink, trap->name);
|
|
if (WARN_ON_ONCE(!trap_item))
|
|
return;
|
|
|
|
devlink->ops->trap_action_set(devlink, trap, DEVLINK_TRAP_ACTION_DROP,
|
|
NULL);
|
|
trap_item->action = DEVLINK_TRAP_ACTION_DROP;
|
|
}
|
|
|
|
/**
|
|
* devlink_traps_register - Register packet traps with devlink.
|
|
* @devlink: devlink.
|
|
* @traps: Packet traps.
|
|
* @traps_count: Count of provided packet traps.
|
|
* @priv: Driver private information.
|
|
*
|
|
* Return: Non-zero value on failure.
|
|
*/
|
|
int devlink_traps_register(struct devlink *devlink,
|
|
const struct devlink_trap *traps,
|
|
size_t traps_count, void *priv)
|
|
{
|
|
int i, err;
|
|
|
|
if (!devlink->ops->trap_init || !devlink->ops->trap_action_set)
|
|
return -EINVAL;
|
|
|
|
mutex_lock(&devlink->lock);
|
|
for (i = 0; i < traps_count; i++) {
|
|
const struct devlink_trap *trap = &traps[i];
|
|
|
|
err = devlink_trap_verify(trap);
|
|
if (err)
|
|
goto err_trap_verify;
|
|
|
|
err = devlink_trap_register(devlink, trap, priv);
|
|
if (err)
|
|
goto err_trap_register;
|
|
}
|
|
mutex_unlock(&devlink->lock);
|
|
|
|
return 0;
|
|
|
|
err_trap_register:
|
|
err_trap_verify:
|
|
for (i--; i >= 0; i--)
|
|
devlink_trap_unregister(devlink, &traps[i]);
|
|
mutex_unlock(&devlink->lock);
|
|
return err;
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_traps_register);
|
|
|
|
/**
|
|
* devlink_traps_unregister - Unregister packet traps from devlink.
|
|
* @devlink: devlink.
|
|
* @traps: Packet traps.
|
|
* @traps_count: Count of provided packet traps.
|
|
*/
|
|
void devlink_traps_unregister(struct devlink *devlink,
|
|
const struct devlink_trap *traps,
|
|
size_t traps_count)
|
|
{
|
|
int i;
|
|
|
|
mutex_lock(&devlink->lock);
|
|
/* Make sure we do not have any packets in-flight while unregistering
|
|
* traps by disabling all of them and waiting for a grace period.
|
|
*/
|
|
for (i = traps_count - 1; i >= 0; i--)
|
|
devlink_trap_disable(devlink, &traps[i]);
|
|
synchronize_rcu();
|
|
for (i = traps_count - 1; i >= 0; i--)
|
|
devlink_trap_unregister(devlink, &traps[i]);
|
|
mutex_unlock(&devlink->lock);
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_traps_unregister);
|
|
|
|
static void
|
|
devlink_trap_stats_update(struct devlink_stats __percpu *trap_stats,
|
|
size_t skb_len)
|
|
{
|
|
struct devlink_stats *stats;
|
|
|
|
stats = this_cpu_ptr(trap_stats);
|
|
u64_stats_update_begin(&stats->syncp);
|
|
stats->rx_bytes += skb_len;
|
|
stats->rx_packets++;
|
|
u64_stats_update_end(&stats->syncp);
|
|
}
|
|
|
|
static void
|
|
devlink_trap_report_metadata_set(struct devlink_trap_metadata *metadata,
|
|
const struct devlink_trap_item *trap_item,
|
|
struct devlink_port *in_devlink_port,
|
|
const struct flow_action_cookie *fa_cookie)
|
|
{
|
|
metadata->trap_name = trap_item->trap->name;
|
|
metadata->trap_group_name = trap_item->group_item->group->name;
|
|
metadata->fa_cookie = fa_cookie;
|
|
metadata->trap_type = trap_item->trap->type;
|
|
|
|
spin_lock(&in_devlink_port->type_lock);
|
|
if (in_devlink_port->type == DEVLINK_PORT_TYPE_ETH)
|
|
metadata->input_dev = in_devlink_port->type_dev;
|
|
spin_unlock(&in_devlink_port->type_lock);
|
|
}
|
|
|
|
/**
|
|
* devlink_trap_report - Report trapped packet to drop monitor.
|
|
* @devlink: devlink.
|
|
* @skb: Trapped packet.
|
|
* @trap_ctx: Trap context.
|
|
* @in_devlink_port: Input devlink port.
|
|
* @fa_cookie: Flow action cookie. Could be NULL.
|
|
*/
|
|
void devlink_trap_report(struct devlink *devlink, struct sk_buff *skb,
|
|
void *trap_ctx, struct devlink_port *in_devlink_port,
|
|
const struct flow_action_cookie *fa_cookie)
|
|
|
|
{
|
|
struct devlink_trap_item *trap_item = trap_ctx;
|
|
|
|
devlink_trap_stats_update(trap_item->stats, skb->len);
|
|
devlink_trap_stats_update(trap_item->group_item->stats, skb->len);
|
|
|
|
if (trace_devlink_trap_report_enabled()) {
|
|
struct devlink_trap_metadata metadata = {};
|
|
|
|
devlink_trap_report_metadata_set(&metadata, trap_item,
|
|
in_devlink_port, fa_cookie);
|
|
trace_devlink_trap_report(devlink, skb, &metadata);
|
|
}
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_trap_report);
|
|
|
|
/**
|
|
* devlink_trap_ctx_priv - Trap context to driver private information.
|
|
* @trap_ctx: Trap context.
|
|
*
|
|
* Return: Driver private information passed during registration.
|
|
*/
|
|
void *devlink_trap_ctx_priv(void *trap_ctx)
|
|
{
|
|
struct devlink_trap_item *trap_item = trap_ctx;
|
|
|
|
return trap_item->priv;
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_trap_ctx_priv);
|
|
|
|
static int
|
|
devlink_trap_group_item_policer_link(struct devlink *devlink,
|
|
struct devlink_trap_group_item *group_item)
|
|
{
|
|
u32 policer_id = group_item->group->init_policer_id;
|
|
struct devlink_trap_policer_item *policer_item;
|
|
|
|
if (policer_id == 0)
|
|
return 0;
|
|
|
|
policer_item = devlink_trap_policer_item_lookup(devlink, policer_id);
|
|
if (WARN_ON_ONCE(!policer_item))
|
|
return -EINVAL;
|
|
|
|
group_item->policer_item = policer_item;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
devlink_trap_group_register(struct devlink *devlink,
|
|
const struct devlink_trap_group *group)
|
|
{
|
|
struct devlink_trap_group_item *group_item;
|
|
int err;
|
|
|
|
if (devlink_trap_group_item_lookup(devlink, group->name))
|
|
return -EEXIST;
|
|
|
|
group_item = kzalloc(sizeof(*group_item), GFP_KERNEL);
|
|
if (!group_item)
|
|
return -ENOMEM;
|
|
|
|
group_item->stats = netdev_alloc_pcpu_stats(struct devlink_stats);
|
|
if (!group_item->stats) {
|
|
err = -ENOMEM;
|
|
goto err_stats_alloc;
|
|
}
|
|
|
|
group_item->group = group;
|
|
|
|
err = devlink_trap_group_item_policer_link(devlink, group_item);
|
|
if (err)
|
|
goto err_policer_link;
|
|
|
|
if (devlink->ops->trap_group_init) {
|
|
err = devlink->ops->trap_group_init(devlink, group);
|
|
if (err)
|
|
goto err_group_init;
|
|
}
|
|
|
|
list_add_tail(&group_item->list, &devlink->trap_group_list);
|
|
devlink_trap_group_notify(devlink, group_item,
|
|
DEVLINK_CMD_TRAP_GROUP_NEW);
|
|
|
|
return 0;
|
|
|
|
err_group_init:
|
|
err_policer_link:
|
|
free_percpu(group_item->stats);
|
|
err_stats_alloc:
|
|
kfree(group_item);
|
|
return err;
|
|
}
|
|
|
|
static void
|
|
devlink_trap_group_unregister(struct devlink *devlink,
|
|
const struct devlink_trap_group *group)
|
|
{
|
|
struct devlink_trap_group_item *group_item;
|
|
|
|
group_item = devlink_trap_group_item_lookup(devlink, group->name);
|
|
if (WARN_ON_ONCE(!group_item))
|
|
return;
|
|
|
|
devlink_trap_group_notify(devlink, group_item,
|
|
DEVLINK_CMD_TRAP_GROUP_DEL);
|
|
list_del(&group_item->list);
|
|
free_percpu(group_item->stats);
|
|
kfree(group_item);
|
|
}
|
|
|
|
/**
|
|
* devlink_trap_groups_register - Register packet trap groups with devlink.
|
|
* @devlink: devlink.
|
|
* @groups: Packet trap groups.
|
|
* @groups_count: Count of provided packet trap groups.
|
|
*
|
|
* Return: Non-zero value on failure.
|
|
*/
|
|
int devlink_trap_groups_register(struct devlink *devlink,
|
|
const struct devlink_trap_group *groups,
|
|
size_t groups_count)
|
|
{
|
|
int i, err;
|
|
|
|
mutex_lock(&devlink->lock);
|
|
for (i = 0; i < groups_count; i++) {
|
|
const struct devlink_trap_group *group = &groups[i];
|
|
|
|
err = devlink_trap_group_verify(group);
|
|
if (err)
|
|
goto err_trap_group_verify;
|
|
|
|
err = devlink_trap_group_register(devlink, group);
|
|
if (err)
|
|
goto err_trap_group_register;
|
|
}
|
|
mutex_unlock(&devlink->lock);
|
|
|
|
return 0;
|
|
|
|
err_trap_group_register:
|
|
err_trap_group_verify:
|
|
for (i--; i >= 0; i--)
|
|
devlink_trap_group_unregister(devlink, &groups[i]);
|
|
mutex_unlock(&devlink->lock);
|
|
return err;
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_trap_groups_register);
|
|
|
|
/**
|
|
* devlink_trap_groups_unregister - Unregister packet trap groups from devlink.
|
|
* @devlink: devlink.
|
|
* @groups: Packet trap groups.
|
|
* @groups_count: Count of provided packet trap groups.
|
|
*/
|
|
void devlink_trap_groups_unregister(struct devlink *devlink,
|
|
const struct devlink_trap_group *groups,
|
|
size_t groups_count)
|
|
{
|
|
int i;
|
|
|
|
mutex_lock(&devlink->lock);
|
|
for (i = groups_count - 1; i >= 0; i--)
|
|
devlink_trap_group_unregister(devlink, &groups[i]);
|
|
mutex_unlock(&devlink->lock);
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_trap_groups_unregister);
|
|
|
|
static void
|
|
devlink_trap_policer_notify(struct devlink *devlink,
|
|
const struct devlink_trap_policer_item *policer_item,
|
|
enum devlink_command cmd)
|
|
{
|
|
struct sk_buff *msg;
|
|
int err;
|
|
|
|
WARN_ON_ONCE(cmd != DEVLINK_CMD_TRAP_POLICER_NEW &&
|
|
cmd != DEVLINK_CMD_TRAP_POLICER_DEL);
|
|
if (!xa_get_mark(&devlinks, devlink->index, DEVLINK_REGISTERED))
|
|
return;
|
|
|
|
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
|
|
if (!msg)
|
|
return;
|
|
|
|
err = devlink_nl_trap_policer_fill(msg, devlink, policer_item, cmd, 0,
|
|
0, 0);
|
|
if (err) {
|
|
nlmsg_free(msg);
|
|
return;
|
|
}
|
|
|
|
genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
|
|
msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
|
|
}
|
|
|
|
static int
|
|
devlink_trap_policer_register(struct devlink *devlink,
|
|
const struct devlink_trap_policer *policer)
|
|
{
|
|
struct devlink_trap_policer_item *policer_item;
|
|
int err;
|
|
|
|
if (devlink_trap_policer_item_lookup(devlink, policer->id))
|
|
return -EEXIST;
|
|
|
|
policer_item = kzalloc(sizeof(*policer_item), GFP_KERNEL);
|
|
if (!policer_item)
|
|
return -ENOMEM;
|
|
|
|
policer_item->policer = policer;
|
|
policer_item->rate = policer->init_rate;
|
|
policer_item->burst = policer->init_burst;
|
|
|
|
if (devlink->ops->trap_policer_init) {
|
|
err = devlink->ops->trap_policer_init(devlink, policer);
|
|
if (err)
|
|
goto err_policer_init;
|
|
}
|
|
|
|
list_add_tail(&policer_item->list, &devlink->trap_policer_list);
|
|
devlink_trap_policer_notify(devlink, policer_item,
|
|
DEVLINK_CMD_TRAP_POLICER_NEW);
|
|
|
|
return 0;
|
|
|
|
err_policer_init:
|
|
kfree(policer_item);
|
|
return err;
|
|
}
|
|
|
|
static void
|
|
devlink_trap_policer_unregister(struct devlink *devlink,
|
|
const struct devlink_trap_policer *policer)
|
|
{
|
|
struct devlink_trap_policer_item *policer_item;
|
|
|
|
policer_item = devlink_trap_policer_item_lookup(devlink, policer->id);
|
|
if (WARN_ON_ONCE(!policer_item))
|
|
return;
|
|
|
|
devlink_trap_policer_notify(devlink, policer_item,
|
|
DEVLINK_CMD_TRAP_POLICER_DEL);
|
|
list_del(&policer_item->list);
|
|
if (devlink->ops->trap_policer_fini)
|
|
devlink->ops->trap_policer_fini(devlink, policer);
|
|
kfree(policer_item);
|
|
}
|
|
|
|
/**
|
|
* devlink_trap_policers_register - Register packet trap policers with devlink.
|
|
* @devlink: devlink.
|
|
* @policers: Packet trap policers.
|
|
* @policers_count: Count of provided packet trap policers.
|
|
*
|
|
* Return: Non-zero value on failure.
|
|
*/
|
|
int
|
|
devlink_trap_policers_register(struct devlink *devlink,
|
|
const struct devlink_trap_policer *policers,
|
|
size_t policers_count)
|
|
{
|
|
int i, err;
|
|
|
|
mutex_lock(&devlink->lock);
|
|
for (i = 0; i < policers_count; i++) {
|
|
const struct devlink_trap_policer *policer = &policers[i];
|
|
|
|
if (WARN_ON(policer->id == 0 ||
|
|
policer->max_rate < policer->min_rate ||
|
|
policer->max_burst < policer->min_burst)) {
|
|
err = -EINVAL;
|
|
goto err_trap_policer_verify;
|
|
}
|
|
|
|
err = devlink_trap_policer_register(devlink, policer);
|
|
if (err)
|
|
goto err_trap_policer_register;
|
|
}
|
|
mutex_unlock(&devlink->lock);
|
|
|
|
return 0;
|
|
|
|
err_trap_policer_register:
|
|
err_trap_policer_verify:
|
|
for (i--; i >= 0; i--)
|
|
devlink_trap_policer_unregister(devlink, &policers[i]);
|
|
mutex_unlock(&devlink->lock);
|
|
return err;
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_trap_policers_register);
|
|
|
|
/**
|
|
* devlink_trap_policers_unregister - Unregister packet trap policers from devlink.
|
|
* @devlink: devlink.
|
|
* @policers: Packet trap policers.
|
|
* @policers_count: Count of provided packet trap policers.
|
|
*/
|
|
void
|
|
devlink_trap_policers_unregister(struct devlink *devlink,
|
|
const struct devlink_trap_policer *policers,
|
|
size_t policers_count)
|
|
{
|
|
int i;
|
|
|
|
mutex_lock(&devlink->lock);
|
|
for (i = policers_count - 1; i >= 0; i--)
|
|
devlink_trap_policer_unregister(devlink, &policers[i]);
|
|
mutex_unlock(&devlink->lock);
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_trap_policers_unregister);
|
|
|
|
static void __devlink_compat_running_version(struct devlink *devlink,
|
|
char *buf, size_t len)
|
|
{
|
|
const struct nlattr *nlattr;
|
|
struct devlink_info_req req;
|
|
struct sk_buff *msg;
|
|
int rem, err;
|
|
|
|
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
|
|
if (!msg)
|
|
return;
|
|
|
|
req.msg = msg;
|
|
err = devlink->ops->info_get(devlink, &req, NULL);
|
|
if (err)
|
|
goto free_msg;
|
|
|
|
nla_for_each_attr(nlattr, (void *)msg->data, msg->len, rem) {
|
|
const struct nlattr *kv;
|
|
int rem_kv;
|
|
|
|
if (nla_type(nlattr) != DEVLINK_ATTR_INFO_VERSION_RUNNING)
|
|
continue;
|
|
|
|
nla_for_each_nested(kv, nlattr, rem_kv) {
|
|
if (nla_type(kv) != DEVLINK_ATTR_INFO_VERSION_VALUE)
|
|
continue;
|
|
|
|
strlcat(buf, nla_data(kv), len);
|
|
strlcat(buf, " ", len);
|
|
}
|
|
}
|
|
free_msg:
|
|
nlmsg_free(msg);
|
|
}
|
|
|
|
static struct devlink_port *netdev_to_devlink_port(struct net_device *dev)
|
|
{
|
|
if (!dev->netdev_ops->ndo_get_devlink_port)
|
|
return NULL;
|
|
|
|
return dev->netdev_ops->ndo_get_devlink_port(dev);
|
|
}
|
|
|
|
void devlink_compat_running_version(struct devlink *devlink,
|
|
char *buf, size_t len)
|
|
{
|
|
if (!devlink->ops->info_get)
|
|
return;
|
|
|
|
mutex_lock(&devlink->lock);
|
|
__devlink_compat_running_version(devlink, buf, len);
|
|
mutex_unlock(&devlink->lock);
|
|
}
|
|
|
|
int devlink_compat_flash_update(struct devlink *devlink, const char *file_name)
|
|
{
|
|
struct devlink_flash_update_params params = {};
|
|
int ret;
|
|
|
|
if (!devlink->ops->flash_update)
|
|
return -EOPNOTSUPP;
|
|
|
|
ret = request_firmware(¶ms.fw, file_name, devlink->dev);
|
|
if (ret)
|
|
return ret;
|
|
|
|
mutex_lock(&devlink->lock);
|
|
devlink_flash_update_begin_notify(devlink);
|
|
ret = devlink->ops->flash_update(devlink, ¶ms, NULL);
|
|
devlink_flash_update_end_notify(devlink);
|
|
mutex_unlock(&devlink->lock);
|
|
|
|
release_firmware(params.fw);
|
|
|
|
return ret;
|
|
}
|
|
|
|
int devlink_compat_phys_port_name_get(struct net_device *dev,
|
|
char *name, size_t len)
|
|
{
|
|
struct devlink_port *devlink_port;
|
|
|
|
/* RTNL mutex is held here which ensures that devlink_port
|
|
* instance cannot disappear in the middle. No need to take
|
|
* any devlink lock as only permanent values are accessed.
|
|
*/
|
|
ASSERT_RTNL();
|
|
|
|
devlink_port = netdev_to_devlink_port(dev);
|
|
if (!devlink_port)
|
|
return -EOPNOTSUPP;
|
|
|
|
return __devlink_port_phys_port_name_get(devlink_port, name, len);
|
|
}
|
|
|
|
int devlink_compat_switch_id_get(struct net_device *dev,
|
|
struct netdev_phys_item_id *ppid)
|
|
{
|
|
struct devlink_port *devlink_port;
|
|
|
|
/* Caller must hold RTNL mutex or reference to dev, which ensures that
|
|
* devlink_port instance cannot disappear in the middle. No need to take
|
|
* any devlink lock as only permanent values are accessed.
|
|
*/
|
|
devlink_port = netdev_to_devlink_port(dev);
|
|
if (!devlink_port || !devlink_port->switch_port)
|
|
return -EOPNOTSUPP;
|
|
|
|
memcpy(ppid, &devlink_port->attrs.switch_id, sizeof(*ppid));
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void __net_exit devlink_pernet_pre_exit(struct net *net)
|
|
{
|
|
struct devlink *devlink;
|
|
u32 actions_performed;
|
|
unsigned long index;
|
|
int err;
|
|
|
|
/* In case network namespace is getting destroyed, reload
|
|
* all devlink instances from this namespace into init_net.
|
|
*/
|
|
mutex_lock(&devlink_mutex);
|
|
xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) {
|
|
if (!devlink_try_get(devlink))
|
|
continue;
|
|
|
|
if (!net_eq(devlink_net(devlink), net))
|
|
goto retry;
|
|
|
|
WARN_ON(!(devlink->features & DEVLINK_F_RELOAD));
|
|
err = devlink_reload(devlink, &init_net,
|
|
DEVLINK_RELOAD_ACTION_DRIVER_REINIT,
|
|
DEVLINK_RELOAD_LIMIT_UNSPEC,
|
|
&actions_performed, NULL);
|
|
if (err && err != -EOPNOTSUPP)
|
|
pr_warn("Failed to reload devlink instance into init_net\n");
|
|
retry:
|
|
devlink_put(devlink);
|
|
}
|
|
mutex_unlock(&devlink_mutex);
|
|
}
|
|
|
|
static struct pernet_operations devlink_pernet_ops __net_initdata = {
|
|
.pre_exit = devlink_pernet_pre_exit,
|
|
};
|
|
|
|
static int __init devlink_init(void)
|
|
{
|
|
int err;
|
|
|
|
err = genl_register_family(&devlink_nl_family);
|
|
if (err)
|
|
goto out;
|
|
err = register_pernet_subsys(&devlink_pernet_ops);
|
|
|
|
out:
|
|
WARN_ON(err);
|
|
return err;
|
|
}
|
|
|
|
subsys_initcall(devlink_init);
|