linux-stable/include/net/bonding.h
Hangbin Liu e74216b8de bonding: fix macvlan over alb bond support
The commit 14af9963ba ("bonding: Support macvlans on top of tlb/rlb mode
bonds") aims to enable the use of macvlans on top of rlb bond mode. However,
the current rlb bond mode only handles ARP packets to update remote neighbor
entries. This causes an issue when a macvlan is on top of the bond, and
remote devices send packets to the macvlan using the bond's MAC address
as the destination. After delivering the packets to the macvlan, the macvlan
will rejects them as the MAC address is incorrect. Consequently, this commit
makes macvlan over bond non-functional.

To address this problem, one potential solution is to check for the presence
of a macvlan port on the bond device using netif_is_macvlan_port(bond->dev)
and return NULL in the rlb_arp_xmit() function. However, this approach
doesn't fully resolve the situation when a VLAN exists between the bond and
macvlan.

So let's just do a partial revert for commit 14af9963ba in rlb_arp_xmit().
As the comment said, Don't modify or load balance ARPs that do not originate
locally.

Fixes: 14af9963ba ("bonding: Support macvlans on top of tlb/rlb mode bonds")
Reported-by: susan.zheng@veritas.com
Closes: https://bugzilla.redhat.com/show_bug.cgi?id=2117816
Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
Acked-by: Jay Vosburgh <jay.vosburgh@canonical.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2023-08-24 10:07:13 +02:00

790 lines
21 KiB
C

/* SPDX-License-Identifier: GPL-1.0+ */
/*
* Bond several ethernet interfaces into a Cisco, running 'Etherchannel'.
*
* Portions are (c) Copyright 1995 Simon "Guru Aleph-Null" Janes
* NCM: Network and Communications Management, Inc.
*
* BUT, I'm the one who modified it for ethernet, so:
* (c) Copyright 1999, Thomas Davis, tadavis@lbl.gov
*
*/
#ifndef _NET_BONDING_H
#define _NET_BONDING_H
#include <linux/timer.h>
#include <linux/proc_fs.h>
#include <linux/if_bonding.h>
#include <linux/cpumask.h>
#include <linux/in6.h>
#include <linux/netpoll.h>
#include <linux/inetdevice.h>
#include <linux/etherdevice.h>
#include <linux/reciprocal_div.h>
#include <linux/if_link.h>
#include <net/bond_3ad.h>
#include <net/bond_alb.h>
#include <net/bond_options.h>
#include <net/ipv6.h>
#include <net/addrconf.h>
#define BOND_MAX_ARP_TARGETS 16
#define BOND_MAX_NS_TARGETS BOND_MAX_ARP_TARGETS
#define BOND_DEFAULT_MIIMON 100
#ifndef __long_aligned
#define __long_aligned __attribute__((aligned((sizeof(long)))))
#endif
#define slave_info(bond_dev, slave_dev, fmt, ...) \
netdev_info(bond_dev, "(slave %s): " fmt, (slave_dev)->name, ##__VA_ARGS__)
#define slave_warn(bond_dev, slave_dev, fmt, ...) \
netdev_warn(bond_dev, "(slave %s): " fmt, (slave_dev)->name, ##__VA_ARGS__)
#define slave_dbg(bond_dev, slave_dev, fmt, ...) \
netdev_dbg(bond_dev, "(slave %s): " fmt, (slave_dev)->name, ##__VA_ARGS__)
#define slave_err(bond_dev, slave_dev, fmt, ...) \
netdev_err(bond_dev, "(slave %s): " fmt, (slave_dev)->name, ##__VA_ARGS__)
#define BOND_MODE(bond) ((bond)->params.mode)
/* slave list primitives */
#define bond_slave_list(bond) (&(bond)->dev->adj_list.lower)
#define bond_has_slaves(bond) !list_empty(bond_slave_list(bond))
/* IMPORTANT: bond_first/last_slave can return NULL in case of an empty list */
#define bond_first_slave(bond) \
(bond_has_slaves(bond) ? \
netdev_adjacent_get_private(bond_slave_list(bond)->next) : \
NULL)
#define bond_last_slave(bond) \
(bond_has_slaves(bond) ? \
netdev_adjacent_get_private(bond_slave_list(bond)->prev) : \
NULL)
/* Caller must have rcu_read_lock */
#define bond_first_slave_rcu(bond) \
netdev_lower_get_first_private_rcu(bond->dev)
#define bond_is_first_slave(bond, pos) (pos == bond_first_slave(bond))
#define bond_is_last_slave(bond, pos) (pos == bond_last_slave(bond))
/**
* bond_for_each_slave - iterate over all slaves
* @bond: the bond holding this list
* @pos: current slave
* @iter: list_head * iterator
*
* Caller must hold RTNL
*/
#define bond_for_each_slave(bond, pos, iter) \
netdev_for_each_lower_private((bond)->dev, pos, iter)
/* Caller must have rcu_read_lock */
#define bond_for_each_slave_rcu(bond, pos, iter) \
netdev_for_each_lower_private_rcu((bond)->dev, pos, iter)
#define BOND_XFRM_FEATURES (NETIF_F_HW_ESP | NETIF_F_HW_ESP_TX_CSUM | \
NETIF_F_GSO_ESP)
#ifdef CONFIG_NET_POLL_CONTROLLER
extern atomic_t netpoll_block_tx;
static inline void block_netpoll_tx(void)
{
atomic_inc(&netpoll_block_tx);
}
static inline void unblock_netpoll_tx(void)
{
atomic_dec(&netpoll_block_tx);
}
static inline int is_netpoll_tx_blocked(struct net_device *dev)
{
if (unlikely(netpoll_tx_running(dev)))
return atomic_read(&netpoll_block_tx);
return 0;
}
#else
#define block_netpoll_tx()
#define unblock_netpoll_tx()
#define is_netpoll_tx_blocked(dev) (0)
#endif
struct bond_params {
int mode;
int xmit_policy;
int miimon;
u8 num_peer_notif;
u8 missed_max;
int arp_interval;
int arp_validate;
int arp_all_targets;
int use_carrier;
int fail_over_mac;
int updelay;
int downdelay;
int peer_notif_delay;
int lacp_active;
int lacp_fast;
unsigned int min_links;
int ad_select;
char primary[IFNAMSIZ];
int primary_reselect;
__be32 arp_targets[BOND_MAX_ARP_TARGETS];
int tx_queues;
int all_slaves_active;
int resend_igmp;
int lp_interval;
int packets_per_slave;
int tlb_dynamic_lb;
struct reciprocal_value reciprocal_packets_per_slave;
u16 ad_actor_sys_prio;
u16 ad_user_port_key;
#if IS_ENABLED(CONFIG_IPV6)
struct in6_addr ns_targets[BOND_MAX_NS_TARGETS];
#endif
/* 2 bytes of padding : see ether_addr_equal_64bits() */
u8 ad_actor_system[ETH_ALEN + 2];
};
struct slave {
struct net_device *dev; /* first - useful for panic debug */
struct bonding *bond; /* our master */
int delay;
/* all 4 in jiffies */
unsigned long last_link_up;
unsigned long last_tx;
unsigned long last_rx;
unsigned long target_last_arp_rx[BOND_MAX_ARP_TARGETS];
s8 link; /* one of BOND_LINK_XXXX */
s8 link_new_state; /* one of BOND_LINK_XXXX */
u8 backup:1, /* indicates backup slave. Value corresponds with
BOND_STATE_ACTIVE and BOND_STATE_BACKUP */
inactive:1, /* indicates inactive slave */
should_notify:1, /* indicates whether the state changed */
should_notify_link:1; /* indicates whether the link changed */
u8 duplex;
u32 original_mtu;
u32 link_failure_count;
u32 speed;
u16 queue_id;
u8 perm_hwaddr[MAX_ADDR_LEN];
int prio;
struct ad_slave_info *ad_info;
struct tlb_slave_info tlb_info;
#ifdef CONFIG_NET_POLL_CONTROLLER
struct netpoll *np;
#endif
struct delayed_work notify_work;
struct kobject kobj;
struct rtnl_link_stats64 slave_stats;
};
static inline struct slave *to_slave(struct kobject *kobj)
{
return container_of(kobj, struct slave, kobj);
}
struct bond_up_slave {
unsigned int count;
struct rcu_head rcu;
struct slave *arr[];
};
/*
* Link pseudo-state only used internally by monitors
*/
#define BOND_LINK_NOCHANGE -1
struct bond_ipsec {
struct list_head list;
struct xfrm_state *xs;
};
/*
* Here are the locking policies for the two bonding locks:
* Get rcu_read_lock when reading or RTNL when writing slave list.
*/
struct bonding {
struct net_device *dev; /* first - useful for panic debug */
struct slave __rcu *curr_active_slave;
struct slave __rcu *current_arp_slave;
struct slave __rcu *primary_slave;
struct bond_up_slave __rcu *usable_slaves;
struct bond_up_slave __rcu *all_slaves;
bool force_primary;
bool notifier_ctx;
s32 slave_cnt; /* never change this value outside the attach/detach wrappers */
int (*recv_probe)(const struct sk_buff *, struct bonding *,
struct slave *);
/* mode_lock is used for mode-specific locking needs, currently used by:
* 3ad mode (4) - protect against running bond_3ad_unbind_slave() and
* bond_3ad_state_machine_handler() concurrently and also
* the access to the state machine shared variables.
* TLB mode (5) - to sync the use and modifications of its hash table
* ALB mode (6) - to sync the use and modifications of its hash table
*/
spinlock_t mode_lock;
spinlock_t stats_lock;
u32 send_peer_notif;
u8 igmp_retrans;
#ifdef CONFIG_PROC_FS
struct proc_dir_entry *proc_entry;
char proc_file_name[IFNAMSIZ];
#endif /* CONFIG_PROC_FS */
struct list_head bond_list;
u32 __percpu *rr_tx_counter;
struct ad_bond_info ad_info;
struct alb_bond_info alb_info;
struct bond_params params;
struct workqueue_struct *wq;
struct delayed_work mii_work;
struct delayed_work arp_work;
struct delayed_work alb_work;
struct delayed_work ad_work;
struct delayed_work mcast_work;
struct delayed_work slave_arr_work;
#ifdef CONFIG_DEBUG_FS
/* debugging support via debugfs */
struct dentry *debug_dir;
#endif /* CONFIG_DEBUG_FS */
struct rtnl_link_stats64 bond_stats;
#ifdef CONFIG_XFRM_OFFLOAD
struct list_head ipsec_list;
/* protecting ipsec_list */
spinlock_t ipsec_lock;
#endif /* CONFIG_XFRM_OFFLOAD */
struct bpf_prog *xdp_prog;
};
#define bond_slave_get_rcu(dev) \
((struct slave *) rcu_dereference(dev->rx_handler_data))
#define bond_slave_get_rtnl(dev) \
((struct slave *) rtnl_dereference(dev->rx_handler_data))
void bond_queue_slave_event(struct slave *slave);
void bond_lower_state_changed(struct slave *slave);
struct bond_vlan_tag {
__be16 vlan_proto;
unsigned short vlan_id;
};
/*
* Returns NULL if the net_device does not belong to any of the bond's slaves
*
* Caller must hold bond lock for read
*/
static inline struct slave *bond_get_slave_by_dev(struct bonding *bond,
struct net_device *slave_dev)
{
return netdev_lower_dev_get_private(bond->dev, slave_dev);
}
static inline struct bonding *bond_get_bond_by_slave(struct slave *slave)
{
return slave->bond;
}
static inline bool bond_should_override_tx_queue(struct bonding *bond)
{
return BOND_MODE(bond) == BOND_MODE_ACTIVEBACKUP ||
BOND_MODE(bond) == BOND_MODE_ROUNDROBIN;
}
static inline bool bond_is_lb(const struct bonding *bond)
{
return BOND_MODE(bond) == BOND_MODE_TLB ||
BOND_MODE(bond) == BOND_MODE_ALB;
}
static inline bool bond_needs_speed_duplex(const struct bonding *bond)
{
return BOND_MODE(bond) == BOND_MODE_8023AD || bond_is_lb(bond);
}
static inline bool bond_is_nondyn_tlb(const struct bonding *bond)
{
return (bond_is_lb(bond) && bond->params.tlb_dynamic_lb == 0);
}
static inline bool bond_mode_can_use_xmit_hash(const struct bonding *bond)
{
return (BOND_MODE(bond) == BOND_MODE_8023AD ||
BOND_MODE(bond) == BOND_MODE_XOR ||
BOND_MODE(bond) == BOND_MODE_TLB ||
BOND_MODE(bond) == BOND_MODE_ALB);
}
static inline bool bond_mode_uses_xmit_hash(const struct bonding *bond)
{
return (BOND_MODE(bond) == BOND_MODE_8023AD ||
BOND_MODE(bond) == BOND_MODE_XOR ||
bond_is_nondyn_tlb(bond));
}
static inline bool bond_mode_uses_arp(int mode)
{
return mode != BOND_MODE_8023AD && mode != BOND_MODE_TLB &&
mode != BOND_MODE_ALB;
}
static inline bool bond_mode_uses_primary(int mode)
{
return mode == BOND_MODE_ACTIVEBACKUP || mode == BOND_MODE_TLB ||
mode == BOND_MODE_ALB;
}
static inline bool bond_uses_primary(struct bonding *bond)
{
return bond_mode_uses_primary(BOND_MODE(bond));
}
static inline struct net_device *bond_option_active_slave_get_rcu(struct bonding *bond)
{
struct slave *slave = rcu_dereference_rtnl(bond->curr_active_slave);
return bond_uses_primary(bond) && slave ? slave->dev : NULL;
}
static inline bool bond_slave_is_up(struct slave *slave)
{
return netif_running(slave->dev) && netif_carrier_ok(slave->dev);
}
static inline void bond_set_active_slave(struct slave *slave)
{
if (slave->backup) {
slave->backup = 0;
bond_queue_slave_event(slave);
bond_lower_state_changed(slave);
}
}
static inline void bond_set_backup_slave(struct slave *slave)
{
if (!slave->backup) {
slave->backup = 1;
bond_queue_slave_event(slave);
bond_lower_state_changed(slave);
}
}
static inline void bond_set_slave_state(struct slave *slave,
int slave_state, bool notify)
{
if (slave->backup == slave_state)
return;
slave->backup = slave_state;
if (notify) {
bond_lower_state_changed(slave);
bond_queue_slave_event(slave);
slave->should_notify = 0;
} else {
if (slave->should_notify)
slave->should_notify = 0;
else
slave->should_notify = 1;
}
}
static inline void bond_slave_state_change(struct bonding *bond)
{
struct list_head *iter;
struct slave *tmp;
bond_for_each_slave(bond, tmp, iter) {
if (tmp->link == BOND_LINK_UP)
bond_set_active_slave(tmp);
else if (tmp->link == BOND_LINK_DOWN)
bond_set_backup_slave(tmp);
}
}
static inline void bond_slave_state_notify(struct bonding *bond)
{
struct list_head *iter;
struct slave *tmp;
bond_for_each_slave(bond, tmp, iter) {
if (tmp->should_notify) {
bond_lower_state_changed(tmp);
tmp->should_notify = 0;
}
}
}
static inline int bond_slave_state(struct slave *slave)
{
return slave->backup;
}
static inline bool bond_is_active_slave(struct slave *slave)
{
return !bond_slave_state(slave);
}
static inline bool bond_slave_can_tx(struct slave *slave)
{
return bond_slave_is_up(slave) && slave->link == BOND_LINK_UP &&
bond_is_active_slave(slave);
}
static inline bool bond_is_active_slave_dev(const struct net_device *slave_dev)
{
struct slave *slave;
bool active;
rcu_read_lock();
slave = bond_slave_get_rcu(slave_dev);
active = bond_is_active_slave(slave);
rcu_read_unlock();
return active;
}
static inline void bond_hw_addr_copy(u8 *dst, const u8 *src, unsigned int len)
{
if (len == ETH_ALEN) {
ether_addr_copy(dst, src);
return;
}
memcpy(dst, src, len);
}
#define BOND_PRI_RESELECT_ALWAYS 0
#define BOND_PRI_RESELECT_BETTER 1
#define BOND_PRI_RESELECT_FAILURE 2
#define BOND_FOM_NONE 0
#define BOND_FOM_ACTIVE 1
#define BOND_FOM_FOLLOW 2
#define BOND_ARP_TARGETS_ANY 0
#define BOND_ARP_TARGETS_ALL 1
#define BOND_ARP_VALIDATE_NONE 0
#define BOND_ARP_VALIDATE_ACTIVE (1 << BOND_STATE_ACTIVE)
#define BOND_ARP_VALIDATE_BACKUP (1 << BOND_STATE_BACKUP)
#define BOND_ARP_VALIDATE_ALL (BOND_ARP_VALIDATE_ACTIVE | \
BOND_ARP_VALIDATE_BACKUP)
#define BOND_ARP_FILTER (BOND_ARP_VALIDATE_ALL + 1)
#define BOND_ARP_FILTER_ACTIVE (BOND_ARP_VALIDATE_ACTIVE | \
BOND_ARP_FILTER)
#define BOND_ARP_FILTER_BACKUP (BOND_ARP_VALIDATE_BACKUP | \
BOND_ARP_FILTER)
#define BOND_SLAVE_NOTIFY_NOW true
#define BOND_SLAVE_NOTIFY_LATER false
static inline int slave_do_arp_validate(struct bonding *bond,
struct slave *slave)
{
return bond->params.arp_validate & (1 << bond_slave_state(slave));
}
static inline int slave_do_arp_validate_only(struct bonding *bond)
{
return bond->params.arp_validate & BOND_ARP_FILTER;
}
static inline int bond_is_ip_target_ok(__be32 addr)
{
return !ipv4_is_lbcast(addr) && !ipv4_is_zeronet(addr);
}
#if IS_ENABLED(CONFIG_IPV6)
static inline int bond_is_ip6_target_ok(struct in6_addr *addr)
{
return !ipv6_addr_any(addr) &&
!ipv6_addr_loopback(addr) &&
!ipv6_addr_is_multicast(addr);
}
#endif
/* Get the oldest arp which we've received on this slave for bond's
* arp_targets.
*/
static inline unsigned long slave_oldest_target_arp_rx(struct bonding *bond,
struct slave *slave)
{
int i = 1;
unsigned long ret = slave->target_last_arp_rx[0];
for (; (i < BOND_MAX_ARP_TARGETS) && bond->params.arp_targets[i]; i++)
if (time_before(slave->target_last_arp_rx[i], ret))
ret = slave->target_last_arp_rx[i];
return ret;
}
static inline unsigned long slave_last_rx(struct bonding *bond,
struct slave *slave)
{
if (bond->params.arp_all_targets == BOND_ARP_TARGETS_ALL)
return slave_oldest_target_arp_rx(bond, slave);
return slave->last_rx;
}
static inline void slave_update_last_tx(struct slave *slave)
{
WRITE_ONCE(slave->last_tx, jiffies);
}
static inline unsigned long slave_last_tx(struct slave *slave)
{
return READ_ONCE(slave->last_tx);
}
#ifdef CONFIG_NET_POLL_CONTROLLER
static inline netdev_tx_t bond_netpoll_send_skb(const struct slave *slave,
struct sk_buff *skb)
{
return netpoll_send_skb(slave->np, skb);
}
#else
static inline netdev_tx_t bond_netpoll_send_skb(const struct slave *slave,
struct sk_buff *skb)
{
BUG();
return NETDEV_TX_OK;
}
#endif
static inline void bond_set_slave_inactive_flags(struct slave *slave,
bool notify)
{
if (!bond_is_lb(slave->bond))
bond_set_slave_state(slave, BOND_STATE_BACKUP, notify);
if (!slave->bond->params.all_slaves_active)
slave->inactive = 1;
}
static inline void bond_set_slave_active_flags(struct slave *slave,
bool notify)
{
bond_set_slave_state(slave, BOND_STATE_ACTIVE, notify);
slave->inactive = 0;
}
static inline bool bond_is_slave_inactive(struct slave *slave)
{
return slave->inactive;
}
static inline void bond_propose_link_state(struct slave *slave, int state)
{
slave->link_new_state = state;
}
static inline void bond_commit_link_state(struct slave *slave, bool notify)
{
if (slave->link_new_state == BOND_LINK_NOCHANGE)
return;
slave->link = slave->link_new_state;
if (notify) {
bond_queue_slave_event(slave);
bond_lower_state_changed(slave);
slave->should_notify_link = 0;
} else {
if (slave->should_notify_link)
slave->should_notify_link = 0;
else
slave->should_notify_link = 1;
}
}
static inline void bond_set_slave_link_state(struct slave *slave, int state,
bool notify)
{
bond_propose_link_state(slave, state);
bond_commit_link_state(slave, notify);
}
static inline void bond_slave_link_notify(struct bonding *bond)
{
struct list_head *iter;
struct slave *tmp;
bond_for_each_slave(bond, tmp, iter) {
if (tmp->should_notify_link) {
bond_queue_slave_event(tmp);
bond_lower_state_changed(tmp);
tmp->should_notify_link = 0;
}
}
}
static inline __be32 bond_confirm_addr(struct net_device *dev, __be32 dst, __be32 local)
{
struct in_device *in_dev;
__be32 addr = 0;
rcu_read_lock();
in_dev = __in_dev_get_rcu(dev);
if (in_dev)
addr = inet_confirm_addr(dev_net(dev), in_dev, dst, local,
RT_SCOPE_HOST);
rcu_read_unlock();
return addr;
}
struct bond_net {
struct net *net; /* Associated network namespace */
struct list_head dev_list;
#ifdef CONFIG_PROC_FS
struct proc_dir_entry *proc_dir;
#endif
struct class_attribute class_attr_bonding_masters;
};
int bond_rcv_validate(const struct sk_buff *skb, struct bonding *bond, struct slave *slave);
netdev_tx_t bond_dev_queue_xmit(struct bonding *bond, struct sk_buff *skb, struct net_device *slave_dev);
int bond_create(struct net *net, const char *name);
int bond_create_sysfs(struct bond_net *net);
void bond_destroy_sysfs(struct bond_net *net);
void bond_prepare_sysfs_group(struct bonding *bond);
int bond_sysfs_slave_add(struct slave *slave);
void bond_sysfs_slave_del(struct slave *slave);
void bond_xdp_set_features(struct net_device *bond_dev);
int bond_enslave(struct net_device *bond_dev, struct net_device *slave_dev,
struct netlink_ext_ack *extack);
int bond_release(struct net_device *bond_dev, struct net_device *slave_dev);
u32 bond_xmit_hash(struct bonding *bond, struct sk_buff *skb);
int bond_set_carrier(struct bonding *bond);
void bond_select_active_slave(struct bonding *bond);
void bond_change_active_slave(struct bonding *bond, struct slave *new_active);
void bond_create_debugfs(void);
void bond_destroy_debugfs(void);
void bond_debug_register(struct bonding *bond);
void bond_debug_unregister(struct bonding *bond);
void bond_debug_reregister(struct bonding *bond);
const char *bond_mode_name(int mode);
void bond_setup(struct net_device *bond_dev);
unsigned int bond_get_num_tx_queues(void);
int bond_netlink_init(void);
void bond_netlink_fini(void);
struct net_device *bond_option_active_slave_get_rcu(struct bonding *bond);
const char *bond_slave_link_status(s8 link);
struct bond_vlan_tag *bond_verify_device_path(struct net_device *start_dev,
struct net_device *end_dev,
int level);
int bond_update_slave_arr(struct bonding *bond, struct slave *skipslave);
void bond_slave_arr_work_rearm(struct bonding *bond, unsigned long delay);
void bond_work_init_all(struct bonding *bond);
#ifdef CONFIG_PROC_FS
void bond_create_proc_entry(struct bonding *bond);
void bond_remove_proc_entry(struct bonding *bond);
void bond_create_proc_dir(struct bond_net *bn);
void bond_destroy_proc_dir(struct bond_net *bn);
#else
static inline void bond_create_proc_entry(struct bonding *bond)
{
}
static inline void bond_remove_proc_entry(struct bonding *bond)
{
}
static inline void bond_create_proc_dir(struct bond_net *bn)
{
}
static inline void bond_destroy_proc_dir(struct bond_net *bn)
{
}
#endif
static inline struct slave *bond_slave_has_mac(struct bonding *bond,
const u8 *mac)
{
struct list_head *iter;
struct slave *tmp;
bond_for_each_slave(bond, tmp, iter)
if (ether_addr_equal_64bits(mac, tmp->dev->dev_addr))
return tmp;
return NULL;
}
/* Caller must hold rcu_read_lock() for read */
static inline bool bond_slave_has_mac_rcu(struct bonding *bond, const u8 *mac)
{
struct list_head *iter;
struct slave *tmp;
bond_for_each_slave_rcu(bond, tmp, iter)
if (ether_addr_equal_64bits(mac, tmp->dev->dev_addr))
return true;
return false;
}
/* Check if the ip is present in arp ip list, or first free slot if ip == 0
* Returns -1 if not found, index if found
*/
static inline int bond_get_targets_ip(__be32 *targets, __be32 ip)
{
int i;
for (i = 0; i < BOND_MAX_ARP_TARGETS; i++)
if (targets[i] == ip)
return i;
else if (targets[i] == 0)
break;
return -1;
}
#if IS_ENABLED(CONFIG_IPV6)
static inline int bond_get_targets_ip6(struct in6_addr *targets, struct in6_addr *ip)
{
struct in6_addr mcaddr;
int i;
for (i = 0; i < BOND_MAX_NS_TARGETS; i++) {
addrconf_addr_solict_mult(&targets[i], &mcaddr);
if ((ipv6_addr_equal(&targets[i], ip)) ||
(ipv6_addr_equal(&mcaddr, ip)))
return i;
else if (ipv6_addr_any(&targets[i]))
break;
}
return -1;
}
#endif
/* exported from bond_main.c */
extern unsigned int bond_net_id;
/* exported from bond_netlink.c */
extern struct rtnl_link_ops bond_link_ops;
/* exported from bond_sysfs_slave.c */
extern const struct sysfs_ops slave_sysfs_ops;
/* exported from bond_3ad.c */
extern const u8 lacpdu_mcast_addr[];
static inline netdev_tx_t bond_tx_drop(struct net_device *dev, struct sk_buff *skb)
{
dev_core_stats_tx_dropped_inc(dev);
dev_kfree_skb_any(skb);
return NET_XMIT_DROP;
}
#endif /* _NET_BONDING_H */