mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-26 10:49:33 +00:00
![John Hurley](/assets/img/avatar_default.png)
With indirect blocks, a driver can register for callbacks from a device
that is does not 'own', for example, a tunnel device. When registering to
or unregistering from a new device, a callback is triggered to generate
a bind/unbind event. This, in turn, allows the driver to receive any
existing rules or to properly clean up installed rules.
When first added, it was assumed that all indirect block registrations
would be for ingress offloads. However, the NFP driver can, in some
instances, support clsact qdisc binds for egress offload.
Change the name of the indirect block callback command in flow_offload to
remove the 'ingress' identifier from it. While this does not change
functionality, a follow up patch will implement a more more generic
callback than just those currently just supporting ingress offload.
Fixes: 4d12ba4278
("nfp: flower: allow offloading of matches on 'internal' ports")
Signed-off-by: John Hurley <john.hurley@netronome.com>
Acked-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
415 lines
11 KiB
C
415 lines
11 KiB
C
#ifndef _NET_FLOW_OFFLOAD_H
|
|
#define _NET_FLOW_OFFLOAD_H
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/list.h>
|
|
#include <net/flow_dissector.h>
|
|
#include <linux/rhashtable.h>
|
|
|
|
struct flow_match {
|
|
struct flow_dissector *dissector;
|
|
void *mask;
|
|
void *key;
|
|
};
|
|
|
|
struct flow_match_meta {
|
|
struct flow_dissector_key_meta *key, *mask;
|
|
};
|
|
|
|
struct flow_match_basic {
|
|
struct flow_dissector_key_basic *key, *mask;
|
|
};
|
|
|
|
struct flow_match_control {
|
|
struct flow_dissector_key_control *key, *mask;
|
|
};
|
|
|
|
struct flow_match_eth_addrs {
|
|
struct flow_dissector_key_eth_addrs *key, *mask;
|
|
};
|
|
|
|
struct flow_match_vlan {
|
|
struct flow_dissector_key_vlan *key, *mask;
|
|
};
|
|
|
|
struct flow_match_ipv4_addrs {
|
|
struct flow_dissector_key_ipv4_addrs *key, *mask;
|
|
};
|
|
|
|
struct flow_match_ipv6_addrs {
|
|
struct flow_dissector_key_ipv6_addrs *key, *mask;
|
|
};
|
|
|
|
struct flow_match_ip {
|
|
struct flow_dissector_key_ip *key, *mask;
|
|
};
|
|
|
|
struct flow_match_ports {
|
|
struct flow_dissector_key_ports *key, *mask;
|
|
};
|
|
|
|
struct flow_match_icmp {
|
|
struct flow_dissector_key_icmp *key, *mask;
|
|
};
|
|
|
|
struct flow_match_tcp {
|
|
struct flow_dissector_key_tcp *key, *mask;
|
|
};
|
|
|
|
struct flow_match_mpls {
|
|
struct flow_dissector_key_mpls *key, *mask;
|
|
};
|
|
|
|
struct flow_match_enc_keyid {
|
|
struct flow_dissector_key_keyid *key, *mask;
|
|
};
|
|
|
|
struct flow_match_enc_opts {
|
|
struct flow_dissector_key_enc_opts *key, *mask;
|
|
};
|
|
|
|
struct flow_rule;
|
|
|
|
void flow_rule_match_meta(const struct flow_rule *rule,
|
|
struct flow_match_meta *out);
|
|
void flow_rule_match_basic(const struct flow_rule *rule,
|
|
struct flow_match_basic *out);
|
|
void flow_rule_match_control(const struct flow_rule *rule,
|
|
struct flow_match_control *out);
|
|
void flow_rule_match_eth_addrs(const struct flow_rule *rule,
|
|
struct flow_match_eth_addrs *out);
|
|
void flow_rule_match_vlan(const struct flow_rule *rule,
|
|
struct flow_match_vlan *out);
|
|
void flow_rule_match_cvlan(const struct flow_rule *rule,
|
|
struct flow_match_vlan *out);
|
|
void flow_rule_match_ipv4_addrs(const struct flow_rule *rule,
|
|
struct flow_match_ipv4_addrs *out);
|
|
void flow_rule_match_ipv6_addrs(const struct flow_rule *rule,
|
|
struct flow_match_ipv6_addrs *out);
|
|
void flow_rule_match_ip(const struct flow_rule *rule,
|
|
struct flow_match_ip *out);
|
|
void flow_rule_match_ports(const struct flow_rule *rule,
|
|
struct flow_match_ports *out);
|
|
void flow_rule_match_tcp(const struct flow_rule *rule,
|
|
struct flow_match_tcp *out);
|
|
void flow_rule_match_icmp(const struct flow_rule *rule,
|
|
struct flow_match_icmp *out);
|
|
void flow_rule_match_mpls(const struct flow_rule *rule,
|
|
struct flow_match_mpls *out);
|
|
void flow_rule_match_enc_control(const struct flow_rule *rule,
|
|
struct flow_match_control *out);
|
|
void flow_rule_match_enc_ipv4_addrs(const struct flow_rule *rule,
|
|
struct flow_match_ipv4_addrs *out);
|
|
void flow_rule_match_enc_ipv6_addrs(const struct flow_rule *rule,
|
|
struct flow_match_ipv6_addrs *out);
|
|
void flow_rule_match_enc_ip(const struct flow_rule *rule,
|
|
struct flow_match_ip *out);
|
|
void flow_rule_match_enc_ports(const struct flow_rule *rule,
|
|
struct flow_match_ports *out);
|
|
void flow_rule_match_enc_keyid(const struct flow_rule *rule,
|
|
struct flow_match_enc_keyid *out);
|
|
void flow_rule_match_enc_opts(const struct flow_rule *rule,
|
|
struct flow_match_enc_opts *out);
|
|
|
|
enum flow_action_id {
|
|
FLOW_ACTION_ACCEPT = 0,
|
|
FLOW_ACTION_DROP,
|
|
FLOW_ACTION_TRAP,
|
|
FLOW_ACTION_GOTO,
|
|
FLOW_ACTION_REDIRECT,
|
|
FLOW_ACTION_MIRRED,
|
|
FLOW_ACTION_REDIRECT_INGRESS,
|
|
FLOW_ACTION_MIRRED_INGRESS,
|
|
FLOW_ACTION_VLAN_PUSH,
|
|
FLOW_ACTION_VLAN_POP,
|
|
FLOW_ACTION_VLAN_MANGLE,
|
|
FLOW_ACTION_TUNNEL_ENCAP,
|
|
FLOW_ACTION_TUNNEL_DECAP,
|
|
FLOW_ACTION_MANGLE,
|
|
FLOW_ACTION_ADD,
|
|
FLOW_ACTION_CSUM,
|
|
FLOW_ACTION_MARK,
|
|
FLOW_ACTION_PTYPE,
|
|
FLOW_ACTION_WAKE,
|
|
FLOW_ACTION_QUEUE,
|
|
FLOW_ACTION_SAMPLE,
|
|
FLOW_ACTION_POLICE,
|
|
FLOW_ACTION_CT,
|
|
FLOW_ACTION_MPLS_PUSH,
|
|
FLOW_ACTION_MPLS_POP,
|
|
FLOW_ACTION_MPLS_MANGLE,
|
|
NUM_FLOW_ACTIONS,
|
|
};
|
|
|
|
/* This is mirroring enum pedit_header_type definition for easy mapping between
|
|
* tc pedit action. Legacy TCA_PEDIT_KEY_EX_HDR_TYPE_NETWORK is mapped to
|
|
* FLOW_ACT_MANGLE_UNSPEC, which is supported by no driver.
|
|
*/
|
|
enum flow_action_mangle_base {
|
|
FLOW_ACT_MANGLE_UNSPEC = 0,
|
|
FLOW_ACT_MANGLE_HDR_TYPE_ETH,
|
|
FLOW_ACT_MANGLE_HDR_TYPE_IP4,
|
|
FLOW_ACT_MANGLE_HDR_TYPE_IP6,
|
|
FLOW_ACT_MANGLE_HDR_TYPE_TCP,
|
|
FLOW_ACT_MANGLE_HDR_TYPE_UDP,
|
|
};
|
|
|
|
typedef void (*action_destr)(void *priv);
|
|
|
|
struct flow_action_entry {
|
|
enum flow_action_id id;
|
|
action_destr destructor;
|
|
void *destructor_priv;
|
|
union {
|
|
u32 chain_index; /* FLOW_ACTION_GOTO */
|
|
struct net_device *dev; /* FLOW_ACTION_REDIRECT */
|
|
struct { /* FLOW_ACTION_VLAN */
|
|
u16 vid;
|
|
__be16 proto;
|
|
u8 prio;
|
|
} vlan;
|
|
struct { /* FLOW_ACTION_PACKET_EDIT */
|
|
enum flow_action_mangle_base htype;
|
|
u32 offset;
|
|
u32 mask;
|
|
u32 val;
|
|
} mangle;
|
|
struct ip_tunnel_info *tunnel; /* FLOW_ACTION_TUNNEL_ENCAP */
|
|
u32 csum_flags; /* FLOW_ACTION_CSUM */
|
|
u32 mark; /* FLOW_ACTION_MARK */
|
|
u16 ptype; /* FLOW_ACTION_PTYPE */
|
|
struct { /* FLOW_ACTION_QUEUE */
|
|
u32 ctx;
|
|
u32 index;
|
|
u8 vf;
|
|
} queue;
|
|
struct { /* FLOW_ACTION_SAMPLE */
|
|
struct psample_group *psample_group;
|
|
u32 rate;
|
|
u32 trunc_size;
|
|
bool truncate;
|
|
} sample;
|
|
struct { /* FLOW_ACTION_POLICE */
|
|
s64 burst;
|
|
u64 rate_bytes_ps;
|
|
} police;
|
|
struct { /* FLOW_ACTION_CT */
|
|
int action;
|
|
u16 zone;
|
|
} ct;
|
|
struct { /* FLOW_ACTION_MPLS_PUSH */
|
|
u32 label;
|
|
__be16 proto;
|
|
u8 tc;
|
|
u8 bos;
|
|
u8 ttl;
|
|
} mpls_push;
|
|
struct { /* FLOW_ACTION_MPLS_POP */
|
|
__be16 proto;
|
|
} mpls_pop;
|
|
struct { /* FLOW_ACTION_MPLS_MANGLE */
|
|
u32 label;
|
|
u8 tc;
|
|
u8 bos;
|
|
u8 ttl;
|
|
} mpls_mangle;
|
|
};
|
|
};
|
|
|
|
struct flow_action {
|
|
unsigned int num_entries;
|
|
struct flow_action_entry entries[0];
|
|
};
|
|
|
|
static inline bool flow_action_has_entries(const struct flow_action *action)
|
|
{
|
|
return action->num_entries;
|
|
}
|
|
|
|
/**
|
|
* flow_action_has_one_action() - check if exactly one action is present
|
|
* @action: tc filter flow offload action
|
|
*
|
|
* Returns true if exactly one action is present.
|
|
*/
|
|
static inline bool flow_offload_has_one_action(const struct flow_action *action)
|
|
{
|
|
return action->num_entries == 1;
|
|
}
|
|
|
|
#define flow_action_for_each(__i, __act, __actions) \
|
|
for (__i = 0, __act = &(__actions)->entries[0]; __i < (__actions)->num_entries; __act = &(__actions)->entries[++__i])
|
|
|
|
struct flow_rule {
|
|
struct flow_match match;
|
|
struct flow_action action;
|
|
};
|
|
|
|
struct flow_rule *flow_rule_alloc(unsigned int num_actions);
|
|
|
|
static inline bool flow_rule_match_key(const struct flow_rule *rule,
|
|
enum flow_dissector_key_id key)
|
|
{
|
|
return dissector_uses_key(rule->match.dissector, key);
|
|
}
|
|
|
|
struct flow_stats {
|
|
u64 pkts;
|
|
u64 bytes;
|
|
u64 lastused;
|
|
};
|
|
|
|
static inline void flow_stats_update(struct flow_stats *flow_stats,
|
|
u64 bytes, u64 pkts, u64 lastused)
|
|
{
|
|
flow_stats->pkts += pkts;
|
|
flow_stats->bytes += bytes;
|
|
flow_stats->lastused = max_t(u64, flow_stats->lastused, lastused);
|
|
}
|
|
|
|
enum flow_block_command {
|
|
FLOW_BLOCK_BIND,
|
|
FLOW_BLOCK_UNBIND,
|
|
};
|
|
|
|
enum flow_block_binder_type {
|
|
FLOW_BLOCK_BINDER_TYPE_UNSPEC,
|
|
FLOW_BLOCK_BINDER_TYPE_CLSACT_INGRESS,
|
|
FLOW_BLOCK_BINDER_TYPE_CLSACT_EGRESS,
|
|
};
|
|
|
|
struct flow_block {
|
|
struct list_head cb_list;
|
|
};
|
|
|
|
struct netlink_ext_ack;
|
|
|
|
struct flow_block_offload {
|
|
enum flow_block_command command;
|
|
enum flow_block_binder_type binder_type;
|
|
bool block_shared;
|
|
bool unlocked_driver_cb;
|
|
struct net *net;
|
|
struct flow_block *block;
|
|
struct list_head cb_list;
|
|
struct list_head *driver_block_list;
|
|
struct netlink_ext_ack *extack;
|
|
};
|
|
|
|
enum tc_setup_type;
|
|
typedef int flow_setup_cb_t(enum tc_setup_type type, void *type_data,
|
|
void *cb_priv);
|
|
|
|
struct flow_block_cb {
|
|
struct list_head driver_list;
|
|
struct list_head list;
|
|
flow_setup_cb_t *cb;
|
|
void *cb_ident;
|
|
void *cb_priv;
|
|
void (*release)(void *cb_priv);
|
|
unsigned int refcnt;
|
|
};
|
|
|
|
struct flow_block_cb *flow_block_cb_alloc(flow_setup_cb_t *cb,
|
|
void *cb_ident, void *cb_priv,
|
|
void (*release)(void *cb_priv));
|
|
void flow_block_cb_free(struct flow_block_cb *block_cb);
|
|
|
|
struct flow_block_cb *flow_block_cb_lookup(struct flow_block *block,
|
|
flow_setup_cb_t *cb, void *cb_ident);
|
|
|
|
void *flow_block_cb_priv(struct flow_block_cb *block_cb);
|
|
void flow_block_cb_incref(struct flow_block_cb *block_cb);
|
|
unsigned int flow_block_cb_decref(struct flow_block_cb *block_cb);
|
|
|
|
static inline void flow_block_cb_add(struct flow_block_cb *block_cb,
|
|
struct flow_block_offload *offload)
|
|
{
|
|
list_add_tail(&block_cb->list, &offload->cb_list);
|
|
}
|
|
|
|
static inline void flow_block_cb_remove(struct flow_block_cb *block_cb,
|
|
struct flow_block_offload *offload)
|
|
{
|
|
list_move(&block_cb->list, &offload->cb_list);
|
|
}
|
|
|
|
bool flow_block_cb_is_busy(flow_setup_cb_t *cb, void *cb_ident,
|
|
struct list_head *driver_block_list);
|
|
|
|
int flow_block_cb_setup_simple(struct flow_block_offload *f,
|
|
struct list_head *driver_list,
|
|
flow_setup_cb_t *cb,
|
|
void *cb_ident, void *cb_priv, bool ingress_only);
|
|
|
|
enum flow_cls_command {
|
|
FLOW_CLS_REPLACE,
|
|
FLOW_CLS_DESTROY,
|
|
FLOW_CLS_STATS,
|
|
FLOW_CLS_TMPLT_CREATE,
|
|
FLOW_CLS_TMPLT_DESTROY,
|
|
};
|
|
|
|
struct flow_cls_common_offload {
|
|
u32 chain_index;
|
|
__be16 protocol;
|
|
u32 prio;
|
|
struct netlink_ext_ack *extack;
|
|
};
|
|
|
|
struct flow_cls_offload {
|
|
struct flow_cls_common_offload common;
|
|
enum flow_cls_command command;
|
|
unsigned long cookie;
|
|
struct flow_rule *rule;
|
|
struct flow_stats stats;
|
|
u32 classid;
|
|
};
|
|
|
|
static inline struct flow_rule *
|
|
flow_cls_offload_flow_rule(struct flow_cls_offload *flow_cmd)
|
|
{
|
|
return flow_cmd->rule;
|
|
}
|
|
|
|
static inline void flow_block_init(struct flow_block *flow_block)
|
|
{
|
|
INIT_LIST_HEAD(&flow_block->cb_list);
|
|
}
|
|
|
|
typedef int flow_indr_block_bind_cb_t(struct net_device *dev, void *cb_priv,
|
|
enum tc_setup_type type, void *type_data);
|
|
|
|
typedef void flow_indr_block_cmd_t(struct net_device *dev,
|
|
flow_indr_block_bind_cb_t *cb, void *cb_priv,
|
|
enum flow_block_command command);
|
|
|
|
struct flow_indr_block_entry {
|
|
flow_indr_block_cmd_t *cb;
|
|
struct list_head list;
|
|
};
|
|
|
|
void flow_indr_add_block_cb(struct flow_indr_block_entry *entry);
|
|
|
|
void flow_indr_del_block_cb(struct flow_indr_block_entry *entry);
|
|
|
|
int __flow_indr_block_cb_register(struct net_device *dev, void *cb_priv,
|
|
flow_indr_block_bind_cb_t *cb,
|
|
void *cb_ident);
|
|
|
|
void __flow_indr_block_cb_unregister(struct net_device *dev,
|
|
flow_indr_block_bind_cb_t *cb,
|
|
void *cb_ident);
|
|
|
|
int flow_indr_block_cb_register(struct net_device *dev, void *cb_priv,
|
|
flow_indr_block_bind_cb_t *cb, void *cb_ident);
|
|
|
|
void flow_indr_block_cb_unregister(struct net_device *dev,
|
|
flow_indr_block_bind_cb_t *cb,
|
|
void *cb_ident);
|
|
|
|
void flow_indr_block_call(struct net_device *dev,
|
|
struct flow_block_offload *bo,
|
|
enum flow_block_command command);
|
|
|
|
#endif /* _NET_FLOW_OFFLOAD_H */
|