800 lines
21 KiB
C
800 lines
21 KiB
C
/* SPDX-License-Identifier: GPL-1.0+ */
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/*
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* Bond several ethernet interfaces into a Cisco, running 'Etherchannel'.
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*
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* Portions are (c) Copyright 1995 Simon "Guru Aleph-Null" Janes
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* NCM: Network and Communications Management, Inc.
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*
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* BUT, I'm the one who modified it for ethernet, so:
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* (c) Copyright 1999, Thomas Davis, tadavis@lbl.gov
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*
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*/
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#ifndef _NET_BONDING_H
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#define _NET_BONDING_H
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#include <linux/timer.h>
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#include <linux/proc_fs.h>
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#include <linux/if_bonding.h>
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#include <linux/cpumask.h>
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#include <linux/in6.h>
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#include <linux/netpoll.h>
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#include <linux/inetdevice.h>
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#include <linux/etherdevice.h>
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#include <linux/reciprocal_div.h>
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#include <linux/if_link.h>
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#include <net/bond_3ad.h>
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#include <net/bond_alb.h>
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#include <net/bond_options.h>
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#include <net/ipv6.h>
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#include <net/addrconf.h>
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#define BOND_MAX_ARP_TARGETS 16
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#define BOND_MAX_NS_TARGETS BOND_MAX_ARP_TARGETS
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#define BOND_DEFAULT_MIIMON 100
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#ifndef __long_aligned
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#define __long_aligned __attribute__((aligned((sizeof(long)))))
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#endif
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#define slave_info(bond_dev, slave_dev, fmt, ...) \
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netdev_info(bond_dev, "(slave %s): " fmt, (slave_dev)->name, ##__VA_ARGS__)
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#define slave_warn(bond_dev, slave_dev, fmt, ...) \
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netdev_warn(bond_dev, "(slave %s): " fmt, (slave_dev)->name, ##__VA_ARGS__)
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#define slave_dbg(bond_dev, slave_dev, fmt, ...) \
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netdev_dbg(bond_dev, "(slave %s): " fmt, (slave_dev)->name, ##__VA_ARGS__)
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#define slave_err(bond_dev, slave_dev, fmt, ...) \
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netdev_err(bond_dev, "(slave %s): " fmt, (slave_dev)->name, ##__VA_ARGS__)
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#define BOND_MODE(bond) ((bond)->params.mode)
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/* slave list primitives */
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#define bond_slave_list(bond) (&(bond)->dev->adj_list.lower)
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#define bond_has_slaves(bond) !list_empty(bond_slave_list(bond))
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/* IMPORTANT: bond_first/last_slave can return NULL in case of an empty list */
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#define bond_first_slave(bond) \
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(bond_has_slaves(bond) ? \
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netdev_adjacent_get_private(bond_slave_list(bond)->next) : \
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NULL)
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#define bond_last_slave(bond) \
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(bond_has_slaves(bond) ? \
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netdev_adjacent_get_private(bond_slave_list(bond)->prev) : \
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NULL)
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/* Caller must have rcu_read_lock */
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#define bond_first_slave_rcu(bond) \
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netdev_lower_get_first_private_rcu(bond->dev)
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#define bond_is_first_slave(bond, pos) (pos == bond_first_slave(bond))
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#define bond_is_last_slave(bond, pos) (pos == bond_last_slave(bond))
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/**
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* bond_for_each_slave - iterate over all slaves
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* @bond: the bond holding this list
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* @pos: current slave
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* @iter: list_head * iterator
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*
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* Caller must hold RTNL
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*/
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#define bond_for_each_slave(bond, pos, iter) \
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netdev_for_each_lower_private((bond)->dev, pos, iter)
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/* Caller must have rcu_read_lock */
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#define bond_for_each_slave_rcu(bond, pos, iter) \
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netdev_for_each_lower_private_rcu((bond)->dev, pos, iter)
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#define BOND_XFRM_FEATURES (NETIF_F_HW_ESP | NETIF_F_HW_ESP_TX_CSUM | \
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NETIF_F_GSO_ESP)
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#ifdef CONFIG_NET_POLL_CONTROLLER
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extern atomic_t netpoll_block_tx;
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static inline void block_netpoll_tx(void)
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{
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atomic_inc(&netpoll_block_tx);
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}
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static inline void unblock_netpoll_tx(void)
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{
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atomic_dec(&netpoll_block_tx);
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}
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static inline int is_netpoll_tx_blocked(struct net_device *dev)
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{
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if (unlikely(netpoll_tx_running(dev)))
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return atomic_read(&netpoll_block_tx);
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return 0;
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}
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#else
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#define block_netpoll_tx()
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#define unblock_netpoll_tx()
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#define is_netpoll_tx_blocked(dev) (0)
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#endif
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struct bond_params {
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int mode;
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int xmit_policy;
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int miimon;
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u8 num_peer_notif;
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u8 missed_max;
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int arp_interval;
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int arp_validate;
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int arp_all_targets;
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int use_carrier;
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int fail_over_mac;
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int updelay;
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int downdelay;
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int peer_notif_delay;
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int lacp_active;
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int lacp_fast;
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unsigned int min_links;
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int ad_select;
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char primary[IFNAMSIZ];
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int primary_reselect;
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__be32 arp_targets[BOND_MAX_ARP_TARGETS];
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int tx_queues;
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int all_slaves_active;
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int resend_igmp;
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int lp_interval;
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int packets_per_slave;
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int tlb_dynamic_lb;
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struct reciprocal_value reciprocal_packets_per_slave;
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u16 ad_actor_sys_prio;
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u16 ad_user_port_key;
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#if IS_ENABLED(CONFIG_IPV6)
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struct in6_addr ns_targets[BOND_MAX_NS_TARGETS];
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#endif
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/* 2 bytes of padding : see ether_addr_equal_64bits() */
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u8 ad_actor_system[ETH_ALEN + 2];
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};
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struct slave {
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struct net_device *dev; /* first - useful for panic debug */
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struct bonding *bond; /* our master */
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int delay;
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/* all 4 in jiffies */
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unsigned long last_link_up;
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unsigned long last_tx;
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unsigned long last_rx;
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unsigned long target_last_arp_rx[BOND_MAX_ARP_TARGETS];
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s8 link; /* one of BOND_LINK_XXXX */
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s8 link_new_state; /* one of BOND_LINK_XXXX */
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u8 backup:1, /* indicates backup slave. Value corresponds with
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BOND_STATE_ACTIVE and BOND_STATE_BACKUP */
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inactive:1, /* indicates inactive slave */
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should_notify:1, /* indicates whether the state changed */
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should_notify_link:1; /* indicates whether the link changed */
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u8 duplex;
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u32 original_mtu;
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u32 link_failure_count;
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u32 speed;
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u16 queue_id;
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u8 perm_hwaddr[MAX_ADDR_LEN];
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int prio;
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struct ad_slave_info *ad_info;
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struct tlb_slave_info tlb_info;
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#ifdef CONFIG_NET_POLL_CONTROLLER
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struct netpoll *np;
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#endif
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struct delayed_work notify_work;
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struct kobject kobj;
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struct rtnl_link_stats64 slave_stats;
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};
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static inline struct slave *to_slave(struct kobject *kobj)
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{
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return container_of(kobj, struct slave, kobj);
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}
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struct bond_up_slave {
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unsigned int count;
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struct rcu_head rcu;
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struct slave *arr[];
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};
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/*
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* Link pseudo-state only used internally by monitors
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*/
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#define BOND_LINK_NOCHANGE -1
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struct bond_ipsec {
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struct list_head list;
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struct xfrm_state *xs;
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};
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/*
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* Here are the locking policies for the two bonding locks:
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* Get rcu_read_lock when reading or RTNL when writing slave list.
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*/
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struct bonding {
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struct net_device *dev; /* first - useful for panic debug */
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struct slave __rcu *curr_active_slave;
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struct slave __rcu *current_arp_slave;
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struct slave __rcu *primary_slave;
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struct bond_up_slave __rcu *usable_slaves;
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struct bond_up_slave __rcu *all_slaves;
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bool force_primary;
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bool notifier_ctx;
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s32 slave_cnt; /* never change this value outside the attach/detach wrappers */
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int (*recv_probe)(const struct sk_buff *, struct bonding *,
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struct slave *);
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/* mode_lock is used for mode-specific locking needs, currently used by:
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* 3ad mode (4) - protect against running bond_3ad_unbind_slave() and
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* bond_3ad_state_machine_handler() concurrently and also
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* the access to the state machine shared variables.
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* TLB mode (5) - to sync the use and modifications of its hash table
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* ALB mode (6) - to sync the use and modifications of its hash table
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*/
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spinlock_t mode_lock;
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spinlock_t stats_lock;
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u32 send_peer_notif;
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u8 igmp_retrans;
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#ifdef CONFIG_PROC_FS
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struct proc_dir_entry *proc_entry;
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char proc_file_name[IFNAMSIZ];
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#endif /* CONFIG_PROC_FS */
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struct list_head bond_list;
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u32 __percpu *rr_tx_counter;
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struct ad_bond_info ad_info;
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struct alb_bond_info alb_info;
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struct bond_params params;
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struct workqueue_struct *wq;
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struct delayed_work mii_work;
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struct delayed_work arp_work;
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struct delayed_work alb_work;
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struct delayed_work ad_work;
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struct delayed_work mcast_work;
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struct delayed_work slave_arr_work;
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#ifdef CONFIG_DEBUG_FS
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/* debugging support via debugfs */
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struct dentry *debug_dir;
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#endif /* CONFIG_DEBUG_FS */
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struct rtnl_link_stats64 bond_stats;
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#ifdef CONFIG_XFRM_OFFLOAD
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struct list_head ipsec_list;
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/* protecting ipsec_list */
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spinlock_t ipsec_lock;
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#endif /* CONFIG_XFRM_OFFLOAD */
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struct bpf_prog *xdp_prog;
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};
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#define bond_slave_get_rcu(dev) \
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((struct slave *) rcu_dereference(dev->rx_handler_data))
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#define bond_slave_get_rtnl(dev) \
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((struct slave *) rtnl_dereference(dev->rx_handler_data))
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void bond_queue_slave_event(struct slave *slave);
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void bond_lower_state_changed(struct slave *slave);
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struct bond_vlan_tag {
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__be16 vlan_proto;
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unsigned short vlan_id;
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};
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/*
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* Returns NULL if the net_device does not belong to any of the bond's slaves
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*
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* Caller must hold bond lock for read
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*/
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static inline struct slave *bond_get_slave_by_dev(struct bonding *bond,
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struct net_device *slave_dev)
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{
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return netdev_lower_dev_get_private(bond->dev, slave_dev);
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}
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static inline struct bonding *bond_get_bond_by_slave(struct slave *slave)
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{
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return slave->bond;
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}
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static inline bool bond_should_override_tx_queue(struct bonding *bond)
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{
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return BOND_MODE(bond) == BOND_MODE_ACTIVEBACKUP ||
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BOND_MODE(bond) == BOND_MODE_ROUNDROBIN;
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}
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static inline bool bond_is_lb(const struct bonding *bond)
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{
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return BOND_MODE(bond) == BOND_MODE_TLB ||
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BOND_MODE(bond) == BOND_MODE_ALB;
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}
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static inline bool bond_needs_speed_duplex(const struct bonding *bond)
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{
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return BOND_MODE(bond) == BOND_MODE_8023AD || bond_is_lb(bond);
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}
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static inline bool bond_is_nondyn_tlb(const struct bonding *bond)
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{
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return (bond_is_lb(bond) && bond->params.tlb_dynamic_lb == 0);
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}
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static inline bool bond_mode_can_use_xmit_hash(const struct bonding *bond)
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{
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return (BOND_MODE(bond) == BOND_MODE_8023AD ||
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BOND_MODE(bond) == BOND_MODE_XOR ||
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BOND_MODE(bond) == BOND_MODE_TLB ||
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BOND_MODE(bond) == BOND_MODE_ALB);
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}
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static inline bool bond_mode_uses_xmit_hash(const struct bonding *bond)
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{
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return (BOND_MODE(bond) == BOND_MODE_8023AD ||
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BOND_MODE(bond) == BOND_MODE_XOR ||
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bond_is_nondyn_tlb(bond));
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}
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static inline bool bond_mode_uses_arp(int mode)
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{
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return mode != BOND_MODE_8023AD && mode != BOND_MODE_TLB &&
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mode != BOND_MODE_ALB;
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}
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static inline bool bond_mode_uses_primary(int mode)
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{
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return mode == BOND_MODE_ACTIVEBACKUP || mode == BOND_MODE_TLB ||
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mode == BOND_MODE_ALB;
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}
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static inline bool bond_uses_primary(struct bonding *bond)
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{
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return bond_mode_uses_primary(BOND_MODE(bond));
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}
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static inline struct net_device *bond_option_active_slave_get_rcu(struct bonding *bond)
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{
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struct slave *slave = rcu_dereference_rtnl(bond->curr_active_slave);
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return bond_uses_primary(bond) && slave ? slave->dev : NULL;
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}
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static inline bool bond_slave_is_up(struct slave *slave)
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{
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return netif_running(slave->dev) && netif_carrier_ok(slave->dev);
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}
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static inline void bond_set_active_slave(struct slave *slave)
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{
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if (slave->backup) {
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slave->backup = 0;
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bond_queue_slave_event(slave);
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bond_lower_state_changed(slave);
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}
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}
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static inline void bond_set_backup_slave(struct slave *slave)
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{
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if (!slave->backup) {
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slave->backup = 1;
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bond_queue_slave_event(slave);
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bond_lower_state_changed(slave);
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}
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}
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static inline void bond_set_slave_state(struct slave *slave,
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int slave_state, bool notify)
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{
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if (slave->backup == slave_state)
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return;
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slave->backup = slave_state;
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if (notify) {
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bond_lower_state_changed(slave);
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bond_queue_slave_event(slave);
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slave->should_notify = 0;
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} else {
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if (slave->should_notify)
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slave->should_notify = 0;
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else
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slave->should_notify = 1;
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}
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}
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static inline void bond_slave_state_change(struct bonding *bond)
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{
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struct list_head *iter;
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struct slave *tmp;
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bond_for_each_slave(bond, tmp, iter) {
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if (tmp->link == BOND_LINK_UP)
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bond_set_active_slave(tmp);
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else if (tmp->link == BOND_LINK_DOWN)
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bond_set_backup_slave(tmp);
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}
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}
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static inline void bond_slave_state_notify(struct bonding *bond)
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{
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struct list_head *iter;
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struct slave *tmp;
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bond_for_each_slave(bond, tmp, iter) {
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if (tmp->should_notify) {
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bond_lower_state_changed(tmp);
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tmp->should_notify = 0;
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}
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}
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}
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static inline int bond_slave_state(struct slave *slave)
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{
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return slave->backup;
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}
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static inline bool bond_is_active_slave(struct slave *slave)
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{
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return !bond_slave_state(slave);
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}
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static inline bool bond_slave_can_tx(struct slave *slave)
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{
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return bond_slave_is_up(slave) && slave->link == BOND_LINK_UP &&
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bond_is_active_slave(slave);
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}
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static inline bool bond_is_active_slave_dev(const struct net_device *slave_dev)
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{
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struct slave *slave;
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bool active;
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rcu_read_lock();
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slave = bond_slave_get_rcu(slave_dev);
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active = bond_is_active_slave(slave);
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rcu_read_unlock();
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return active;
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}
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static inline void bond_hw_addr_copy(u8 *dst, const u8 *src, unsigned int len)
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{
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if (len == ETH_ALEN) {
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ether_addr_copy(dst, src);
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return;
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}
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memcpy(dst, src, len);
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}
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#define BOND_PRI_RESELECT_ALWAYS 0
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#define BOND_PRI_RESELECT_BETTER 1
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#define BOND_PRI_RESELECT_FAILURE 2
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#define BOND_FOM_NONE 0
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#define BOND_FOM_ACTIVE 1
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#define BOND_FOM_FOLLOW 2
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#define BOND_ARP_TARGETS_ANY 0
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#define BOND_ARP_TARGETS_ALL 1
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#define BOND_ARP_VALIDATE_NONE 0
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#define BOND_ARP_VALIDATE_ACTIVE (1 << BOND_STATE_ACTIVE)
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#define BOND_ARP_VALIDATE_BACKUP (1 << BOND_STATE_BACKUP)
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#define BOND_ARP_VALIDATE_ALL (BOND_ARP_VALIDATE_ACTIVE | \
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BOND_ARP_VALIDATE_BACKUP)
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#define BOND_ARP_FILTER (BOND_ARP_VALIDATE_ALL + 1)
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#define BOND_ARP_FILTER_ACTIVE (BOND_ARP_VALIDATE_ACTIVE | \
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BOND_ARP_FILTER)
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#define BOND_ARP_FILTER_BACKUP (BOND_ARP_VALIDATE_BACKUP | \
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BOND_ARP_FILTER)
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#define BOND_SLAVE_NOTIFY_NOW true
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#define BOND_SLAVE_NOTIFY_LATER false
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static inline int slave_do_arp_validate(struct bonding *bond,
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struct slave *slave)
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{
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return bond->params.arp_validate & (1 << bond_slave_state(slave));
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}
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static inline int slave_do_arp_validate_only(struct bonding *bond)
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{
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return bond->params.arp_validate & BOND_ARP_FILTER;
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}
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static inline int bond_is_ip_target_ok(__be32 addr)
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{
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return !ipv4_is_lbcast(addr) && !ipv4_is_zeronet(addr);
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}
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#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];
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|
|
|
for (; (i < BOND_MAX_ARP_TARGETS) && bond->params.arp_targets[i]; i++)
|
|
if (time_before(slave->target_last_arp_rx[i], ret))
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|
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_rx(struct bonding *bond, const u8 *mac)
|
|
{
|
|
struct list_head *iter;
|
|
struct slave *tmp;
|
|
struct netdev_hw_addr *ha;
|
|
|
|
bond_for_each_slave_rcu(bond, tmp, iter)
|
|
if (ether_addr_equal_64bits(mac, tmp->dev->dev_addr))
|
|
return true;
|
|
|
|
if (netdev_uc_empty(bond->dev))
|
|
return false;
|
|
|
|
netdev_for_each_uc_addr(ha, bond->dev)
|
|
if (ether_addr_equal_64bits(mac, ha->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 */
|