diff options
Diffstat (limited to 'net/bridge/br_private.h')
| -rw-r--r-- | net/bridge/br_private.h | 2175 |
1 files changed, 2175 insertions, 0 deletions
diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h new file mode 100644 index 000000000..06e5f6faa --- /dev/null +++ b/net/bridge/br_private.h @@ -0,0 +1,2175 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * Linux ethernet bridge + * + * Authors: + * Lennert Buytenhek <buytenh@gnu.org> + */ + +#ifndef _BR_PRIVATE_H +#define _BR_PRIVATE_H + +#include <linux/netdevice.h> +#include <linux/if_bridge.h> +#include <linux/netpoll.h> +#include <linux/u64_stats_sync.h> +#include <net/route.h> +#include <net/ip6_fib.h> +#include <linux/if_vlan.h> +#include <linux/rhashtable.h> +#include <linux/refcount.h> + +#define BR_HASH_BITS 8 +#define BR_HASH_SIZE (1 << BR_HASH_BITS) + +#define BR_HOLD_TIME (1*HZ) + +#define BR_PORT_BITS 10 +#define BR_MAX_PORTS (1<<BR_PORT_BITS) + +#define BR_MULTICAST_DEFAULT_HASH_MAX 4096 +#define BR_MULTICAST_QUERY_INTVL_MIN msecs_to_jiffies(1000) +#define BR_MULTICAST_STARTUP_QUERY_INTVL_MIN BR_MULTICAST_QUERY_INTVL_MIN + +#define BR_HWDOM_MAX BITS_PER_LONG + +#define BR_VERSION "2.3" + +/* Control of forwarding link local multicast */ +#define BR_GROUPFWD_DEFAULT 0 +/* Don't allow forwarding of control protocols like STP, MAC PAUSE and LACP */ +enum { + BR_GROUPFWD_STP = BIT(0), + BR_GROUPFWD_MACPAUSE = BIT(1), + BR_GROUPFWD_LACP = BIT(2), +}; + +#define BR_GROUPFWD_RESTRICTED (BR_GROUPFWD_STP | BR_GROUPFWD_MACPAUSE | \ + BR_GROUPFWD_LACP) +/* The Nearest Customer Bridge Group Address, 01-80-C2-00-00-[00,0B,0C,0D,0F] */ +#define BR_GROUPFWD_8021AD 0xB801u + +/* Path to usermode spanning tree program */ +#define BR_STP_PROG "/sbin/bridge-stp" + +#define BR_FDB_NOTIFY_SETTABLE_BITS (FDB_NOTIFY_BIT | FDB_NOTIFY_INACTIVE_BIT) + +typedef struct bridge_id bridge_id; +typedef struct mac_addr mac_addr; +typedef __u16 port_id; + +struct bridge_id { + unsigned char prio[2]; + unsigned char addr[ETH_ALEN]; +}; + +struct mac_addr { + unsigned char addr[ETH_ALEN]; +}; + +#ifdef CONFIG_BRIDGE_IGMP_SNOOPING +/* our own querier */ +struct bridge_mcast_own_query { + struct timer_list timer; + u32 startup_sent; +}; + +/* other querier */ +struct bridge_mcast_other_query { + struct timer_list timer; + unsigned long delay_time; +}; + +/* selected querier */ +struct bridge_mcast_querier { + struct br_ip addr; + int port_ifidx; + seqcount_spinlock_t seq; +}; + +/* IGMP/MLD statistics */ +struct bridge_mcast_stats { + struct br_mcast_stats mstats; + struct u64_stats_sync syncp; +}; +#endif + +/* net_bridge_mcast_port must be always defined due to forwarding stubs */ +struct net_bridge_mcast_port { +#ifdef CONFIG_BRIDGE_IGMP_SNOOPING + struct net_bridge_port *port; + struct net_bridge_vlan *vlan; + + struct bridge_mcast_own_query ip4_own_query; + struct timer_list ip4_mc_router_timer; + struct hlist_node ip4_rlist; +#if IS_ENABLED(CONFIG_IPV6) + struct bridge_mcast_own_query ip6_own_query; + struct timer_list ip6_mc_router_timer; + struct hlist_node ip6_rlist; +#endif /* IS_ENABLED(CONFIG_IPV6) */ + unsigned char multicast_router; +#endif /* CONFIG_BRIDGE_IGMP_SNOOPING */ +}; + +/* net_bridge_mcast must be always defined due to forwarding stubs */ +struct net_bridge_mcast { +#ifdef CONFIG_BRIDGE_IGMP_SNOOPING + struct net_bridge *br; + struct net_bridge_vlan *vlan; + + u32 multicast_last_member_count; + u32 multicast_startup_query_count; + + u8 multicast_querier; + u8 multicast_igmp_version; + u8 multicast_router; +#if IS_ENABLED(CONFIG_IPV6) + u8 multicast_mld_version; +#endif + unsigned long multicast_last_member_interval; + unsigned long multicast_membership_interval; + unsigned long multicast_querier_interval; + unsigned long multicast_query_interval; + unsigned long multicast_query_response_interval; + unsigned long multicast_startup_query_interval; + struct hlist_head ip4_mc_router_list; + struct timer_list ip4_mc_router_timer; + struct bridge_mcast_other_query ip4_other_query; + struct bridge_mcast_own_query ip4_own_query; + struct bridge_mcast_querier ip4_querier; +#if IS_ENABLED(CONFIG_IPV6) + struct hlist_head ip6_mc_router_list; + struct timer_list ip6_mc_router_timer; + struct bridge_mcast_other_query ip6_other_query; + struct bridge_mcast_own_query ip6_own_query; + struct bridge_mcast_querier ip6_querier; +#endif /* IS_ENABLED(CONFIG_IPV6) */ +#endif /* CONFIG_BRIDGE_IGMP_SNOOPING */ +}; + +struct br_tunnel_info { + __be64 tunnel_id; + struct metadata_dst __rcu *tunnel_dst; +}; + +/* private vlan flags */ +enum { + BR_VLFLAG_PER_PORT_STATS = BIT(0), + BR_VLFLAG_ADDED_BY_SWITCHDEV = BIT(1), + BR_VLFLAG_MCAST_ENABLED = BIT(2), + BR_VLFLAG_GLOBAL_MCAST_ENABLED = BIT(3), +}; + +/** + * struct net_bridge_vlan - per-vlan entry + * + * @vnode: rhashtable member + * @vid: VLAN id + * @flags: bridge vlan flags + * @priv_flags: private (in-kernel) bridge vlan flags + * @state: STP state (e.g. blocking, learning, forwarding) + * @stats: per-cpu VLAN statistics + * @br: if MASTER flag set, this points to a bridge struct + * @port: if MASTER flag unset, this points to a port struct + * @refcnt: if MASTER flag set, this is bumped for each port referencing it + * @brvlan: if MASTER flag unset, this points to the global per-VLAN context + * for this VLAN entry + * @br_mcast_ctx: if MASTER flag set, this is the global vlan multicast context + * @port_mcast_ctx: if MASTER flag unset, this is the per-port/vlan multicast + * context + * @msti: if MASTER flag set, this holds the VLANs MST instance + * @vlist: sorted list of VLAN entries + * @rcu: used for entry destruction + * + * This structure is shared between the global per-VLAN entries contained in + * the bridge rhashtable and the local per-port per-VLAN entries contained in + * the port's rhashtable. The union entries should be interpreted depending on + * the entry flags that are set. + */ +struct net_bridge_vlan { + struct rhash_head vnode; + struct rhash_head tnode; + u16 vid; + u16 flags; + u16 priv_flags; + u8 state; + struct pcpu_sw_netstats __percpu *stats; + union { + struct net_bridge *br; + struct net_bridge_port *port; + }; + union { + refcount_t refcnt; + struct net_bridge_vlan *brvlan; + }; + + struct br_tunnel_info tinfo; + + union { + struct net_bridge_mcast br_mcast_ctx; + struct net_bridge_mcast_port port_mcast_ctx; + }; + + u16 msti; + + struct list_head vlist; + + struct rcu_head rcu; +}; + +/** + * struct net_bridge_vlan_group + * + * @vlan_hash: VLAN entry rhashtable + * @vlan_list: sorted VLAN entry list + * @num_vlans: number of total VLAN entries + * @pvid: PVID VLAN id + * @pvid_state: PVID's STP state (e.g. forwarding, learning, blocking) + * + * IMPORTANT: Be careful when checking if there're VLAN entries using list + * primitives because the bridge can have entries in its list which + * are just for global context but not for filtering, i.e. they have + * the master flag set but not the brentry flag. If you have to check + * if there're "real" entries in the bridge please test @num_vlans + */ +struct net_bridge_vlan_group { + struct rhashtable vlan_hash; + struct rhashtable tunnel_hash; + struct list_head vlan_list; + u16 num_vlans; + u16 pvid; + u8 pvid_state; +}; + +/* bridge fdb flags */ +enum { + BR_FDB_LOCAL, + BR_FDB_STATIC, + BR_FDB_STICKY, + BR_FDB_ADDED_BY_USER, + BR_FDB_ADDED_BY_EXT_LEARN, + BR_FDB_OFFLOADED, + BR_FDB_NOTIFY, + BR_FDB_NOTIFY_INACTIVE +}; + +struct net_bridge_fdb_key { + mac_addr addr; + u16 vlan_id; +}; + +struct net_bridge_fdb_entry { + struct rhash_head rhnode; + struct net_bridge_port *dst; + + struct net_bridge_fdb_key key; + struct hlist_node fdb_node; + unsigned long flags; + + /* write-heavy members should not affect lookups */ + unsigned long updated ____cacheline_aligned_in_smp; + unsigned long used; + + struct rcu_head rcu; +}; + +struct net_bridge_fdb_flush_desc { + unsigned long flags; + unsigned long flags_mask; + int port_ifindex; + u16 vlan_id; +}; + +#define MDB_PG_FLAGS_PERMANENT BIT(0) +#define MDB_PG_FLAGS_OFFLOAD BIT(1) +#define MDB_PG_FLAGS_FAST_LEAVE BIT(2) +#define MDB_PG_FLAGS_STAR_EXCL BIT(3) +#define MDB_PG_FLAGS_BLOCKED BIT(4) + +#define PG_SRC_ENT_LIMIT 32 + +#define BR_SGRP_F_DELETE BIT(0) +#define BR_SGRP_F_SEND BIT(1) +#define BR_SGRP_F_INSTALLED BIT(2) + +struct net_bridge_mcast_gc { + struct hlist_node gc_node; + void (*destroy)(struct net_bridge_mcast_gc *gc); +}; + +struct net_bridge_group_src { + struct hlist_node node; + + struct br_ip addr; + struct net_bridge_port_group *pg; + u8 flags; + u8 src_query_rexmit_cnt; + struct timer_list timer; + + struct net_bridge *br; + struct net_bridge_mcast_gc mcast_gc; + struct rcu_head rcu; +}; + +struct net_bridge_port_group_sg_key { + struct net_bridge_port *port; + struct br_ip addr; +}; + +struct net_bridge_port_group { + struct net_bridge_port_group __rcu *next; + struct net_bridge_port_group_sg_key key; + unsigned char eth_addr[ETH_ALEN] __aligned(2); + unsigned char flags; + unsigned char filter_mode; + unsigned char grp_query_rexmit_cnt; + unsigned char rt_protocol; + + struct hlist_head src_list; + unsigned int src_ents; + struct timer_list timer; + struct timer_list rexmit_timer; + struct hlist_node mglist; + struct rb_root eht_set_tree; + struct rb_root eht_host_tree; + + struct rhash_head rhnode; + struct net_bridge_mcast_gc mcast_gc; + struct rcu_head rcu; +}; + +struct net_bridge_mdb_entry { + struct rhash_head rhnode; + struct net_bridge *br; + struct net_bridge_port_group __rcu *ports; + struct br_ip addr; + bool host_joined; + + struct timer_list timer; + struct hlist_node mdb_node; + + struct net_bridge_mcast_gc mcast_gc; + struct rcu_head rcu; +}; + +struct net_bridge_port { + struct net_bridge *br; + struct net_device *dev; + netdevice_tracker dev_tracker; + struct list_head list; + + unsigned long flags; +#ifdef CONFIG_BRIDGE_VLAN_FILTERING + struct net_bridge_vlan_group __rcu *vlgrp; +#endif + struct net_bridge_port __rcu *backup_port; + + /* STP */ + u8 priority; + u8 state; + u16 port_no; + unsigned char topology_change_ack; + unsigned char config_pending; + port_id port_id; + port_id designated_port; + bridge_id designated_root; + bridge_id designated_bridge; + u32 path_cost; + u32 designated_cost; + unsigned long designated_age; + + struct timer_list forward_delay_timer; + struct timer_list hold_timer; + struct timer_list message_age_timer; + struct kobject kobj; + struct rcu_head rcu; + + struct net_bridge_mcast_port multicast_ctx; + +#ifdef CONFIG_BRIDGE_IGMP_SNOOPING + struct bridge_mcast_stats __percpu *mcast_stats; + + u32 multicast_eht_hosts_limit; + u32 multicast_eht_hosts_cnt; + struct hlist_head mglist; +#endif + +#ifdef CONFIG_SYSFS + char sysfs_name[IFNAMSIZ]; +#endif + +#ifdef CONFIG_NET_POLL_CONTROLLER + struct netpoll *np; +#endif +#ifdef CONFIG_NET_SWITCHDEV + /* Identifier used to group ports that share the same switchdev + * hardware domain. + */ + int hwdom; + int offload_count; + struct netdev_phys_item_id ppid; +#endif + u16 group_fwd_mask; + u16 backup_redirected_cnt; + + struct bridge_stp_xstats stp_xstats; +}; + +#define kobj_to_brport(obj) container_of(obj, struct net_bridge_port, kobj) + +#define br_auto_port(p) ((p)->flags & BR_AUTO_MASK) +#define br_promisc_port(p) ((p)->flags & BR_PROMISC) + +static inline struct net_bridge_port *br_port_get_rcu(const struct net_device *dev) +{ + return rcu_dereference(dev->rx_handler_data); +} + +static inline struct net_bridge_port *br_port_get_rtnl(const struct net_device *dev) +{ + return netif_is_bridge_port(dev) ? + rtnl_dereference(dev->rx_handler_data) : NULL; +} + +static inline struct net_bridge_port *br_port_get_rtnl_rcu(const struct net_device *dev) +{ + return netif_is_bridge_port(dev) ? + rcu_dereference_rtnl(dev->rx_handler_data) : NULL; +} + +enum net_bridge_opts { + BROPT_VLAN_ENABLED, + BROPT_VLAN_STATS_ENABLED, + BROPT_NF_CALL_IPTABLES, + BROPT_NF_CALL_IP6TABLES, + BROPT_NF_CALL_ARPTABLES, + BROPT_GROUP_ADDR_SET, + BROPT_MULTICAST_ENABLED, + BROPT_MULTICAST_QUERY_USE_IFADDR, + BROPT_MULTICAST_STATS_ENABLED, + BROPT_HAS_IPV6_ADDR, + BROPT_NEIGH_SUPPRESS_ENABLED, + BROPT_MTU_SET_BY_USER, + BROPT_VLAN_STATS_PER_PORT, + BROPT_NO_LL_LEARN, + BROPT_VLAN_BRIDGE_BINDING, + BROPT_MCAST_VLAN_SNOOPING_ENABLED, + BROPT_MST_ENABLED, +}; + +struct net_bridge { + spinlock_t lock; + spinlock_t hash_lock; + struct hlist_head frame_type_list; + struct net_device *dev; + unsigned long options; + /* These fields are accessed on each packet */ +#ifdef CONFIG_BRIDGE_VLAN_FILTERING + __be16 vlan_proto; + u16 default_pvid; + struct net_bridge_vlan_group __rcu *vlgrp; +#endif + + struct rhashtable fdb_hash_tbl; + struct list_head port_list; +#if IS_ENABLED(CONFIG_BRIDGE_NETFILTER) + union { + struct rtable fake_rtable; + struct rt6_info fake_rt6_info; + }; +#endif + u16 group_fwd_mask; + u16 group_fwd_mask_required; + + /* STP */ + bridge_id designated_root; + bridge_id bridge_id; + unsigned char topology_change; + unsigned char topology_change_detected; + u16 root_port; + unsigned long max_age; + unsigned long hello_time; + unsigned long forward_delay; + unsigned long ageing_time; + unsigned long bridge_max_age; + unsigned long bridge_hello_time; + unsigned long bridge_forward_delay; + unsigned long bridge_ageing_time; + u32 root_path_cost; + + u8 group_addr[ETH_ALEN]; + + enum { + BR_NO_STP, /* no spanning tree */ + BR_KERNEL_STP, /* old STP in kernel */ + BR_USER_STP, /* new RSTP in userspace */ + } stp_enabled; + + struct net_bridge_mcast multicast_ctx; + +#ifdef CONFIG_BRIDGE_IGMP_SNOOPING + struct bridge_mcast_stats __percpu *mcast_stats; + + u32 hash_max; + + spinlock_t multicast_lock; + + struct rhashtable mdb_hash_tbl; + struct rhashtable sg_port_tbl; + + struct hlist_head mcast_gc_list; + struct hlist_head mdb_list; + + struct work_struct mcast_gc_work; +#endif + + struct timer_list hello_timer; + struct timer_list tcn_timer; + struct timer_list topology_change_timer; + struct delayed_work gc_work; + struct kobject *ifobj; + u32 auto_cnt; + +#ifdef CONFIG_NET_SWITCHDEV + /* Counter used to make sure that hardware domains get unique + * identifiers in case a bridge spans multiple switchdev instances. + */ + int last_hwdom; + /* Bit mask of hardware domain numbers in use */ + unsigned long busy_hwdoms; +#endif + struct hlist_head fdb_list; + +#if IS_ENABLED(CONFIG_BRIDGE_MRP) + struct hlist_head mrp_list; +#endif +#if IS_ENABLED(CONFIG_BRIDGE_CFM) + struct hlist_head mep_list; +#endif +}; + +struct br_input_skb_cb { + struct net_device *brdev; + + u16 frag_max_size; +#ifdef CONFIG_BRIDGE_IGMP_SNOOPING + u8 igmp; + u8 mrouters_only:1; +#endif + u8 proxyarp_replied:1; + u8 src_port_isolated:1; +#ifdef CONFIG_BRIDGE_VLAN_FILTERING + u8 vlan_filtered:1; +#endif +#ifdef CONFIG_NETFILTER_FAMILY_BRIDGE + u8 br_netfilter_broute:1; +#endif + +#ifdef CONFIG_NET_SWITCHDEV + /* Set if TX data plane offloading is used towards at least one + * hardware domain. + */ + u8 tx_fwd_offload:1; + /* The switchdev hardware domain from which this packet was received. + * If skb->offload_fwd_mark was set, then this packet was already + * forwarded by hardware to the other ports in the source hardware + * domain, otherwise it wasn't. + */ + int src_hwdom; + /* Bit mask of hardware domains towards this packet has already been + * transmitted using the TX data plane offload. + */ + unsigned long fwd_hwdoms; +#endif +}; + +#define BR_INPUT_SKB_CB(__skb) ((struct br_input_skb_cb *)(__skb)->cb) + +#ifdef CONFIG_BRIDGE_IGMP_SNOOPING +# define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (BR_INPUT_SKB_CB(__skb)->mrouters_only) +#else +# define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (0) +#endif + +#define br_printk(level, br, format, args...) \ + printk(level "%s: " format, (br)->dev->name, ##args) + +#define br_err(__br, format, args...) \ + br_printk(KERN_ERR, __br, format, ##args) +#define br_warn(__br, format, args...) \ + br_printk(KERN_WARNING, __br, format, ##args) +#define br_notice(__br, format, args...) \ + br_printk(KERN_NOTICE, __br, format, ##args) +#define br_info(__br, format, args...) \ + br_printk(KERN_INFO, __br, format, ##args) + +#define br_debug(br, format, args...) \ + pr_debug("%s: " format, (br)->dev->name, ##args) + +/* called under bridge lock */ +static inline int br_is_root_bridge(const struct net_bridge *br) +{ + return !memcmp(&br->bridge_id, &br->designated_root, 8); +} + +/* check if a VLAN entry is global */ +static inline bool br_vlan_is_master(const struct net_bridge_vlan *v) +{ + return v->flags & BRIDGE_VLAN_INFO_MASTER; +} + +/* check if a VLAN entry is used by the bridge */ +static inline bool br_vlan_is_brentry(const struct net_bridge_vlan *v) +{ + return v->flags & BRIDGE_VLAN_INFO_BRENTRY; +} + +/* check if we should use the vlan entry, returns false if it's only context */ +static inline bool br_vlan_should_use(const struct net_bridge_vlan *v) +{ + if (br_vlan_is_master(v)) { + if (br_vlan_is_brentry(v)) + return true; + else + return false; + } + + return true; +} + +static inline bool nbp_state_should_learn(const struct net_bridge_port *p) +{ + return p->state == BR_STATE_LEARNING || p->state == BR_STATE_FORWARDING; +} + +static inline bool br_vlan_valid_id(u16 vid, struct netlink_ext_ack *extack) +{ + bool ret = vid > 0 && vid < VLAN_VID_MASK; + + if (!ret) + NL_SET_ERR_MSG_MOD(extack, "Vlan id is invalid"); + + return ret; +} + +static inline bool br_vlan_valid_range(const struct bridge_vlan_info *cur, + const struct bridge_vlan_info *last, + struct netlink_ext_ack *extack) +{ + /* pvid flag is not allowed in ranges */ + if (cur->flags & BRIDGE_VLAN_INFO_PVID) { + NL_SET_ERR_MSG_MOD(extack, "Pvid isn't allowed in a range"); + return false; + } + + /* when cur is the range end, check if: + * - it has range start flag + * - range ids are invalid (end is equal to or before start) + */ + if (last) { + if (cur->flags & BRIDGE_VLAN_INFO_RANGE_BEGIN) { + NL_SET_ERR_MSG_MOD(extack, "Found a new vlan range start while processing one"); + return false; + } else if (!(cur->flags & BRIDGE_VLAN_INFO_RANGE_END)) { + NL_SET_ERR_MSG_MOD(extack, "Vlan range end flag is missing"); + return false; + } else if (cur->vid <= last->vid) { + NL_SET_ERR_MSG_MOD(extack, "End vlan id is less than or equal to start vlan id"); + return false; + } + } + + /* check for required range flags */ + if (!(cur->flags & (BRIDGE_VLAN_INFO_RANGE_BEGIN | + BRIDGE_VLAN_INFO_RANGE_END))) { + NL_SET_ERR_MSG_MOD(extack, "Both vlan range flags are missing"); + return false; + } + + return true; +} + +static inline u8 br_vlan_multicast_router(const struct net_bridge_vlan *v) +{ + u8 mcast_router = MDB_RTR_TYPE_DISABLED; + +#ifdef CONFIG_BRIDGE_IGMP_SNOOPING + if (!br_vlan_is_master(v)) + mcast_router = v->port_mcast_ctx.multicast_router; + else + mcast_router = v->br_mcast_ctx.multicast_router; +#endif + + return mcast_router; +} + +static inline int br_afspec_cmd_to_rtm(int cmd) +{ + switch (cmd) { + case RTM_SETLINK: + return RTM_NEWVLAN; + case RTM_DELLINK: + return RTM_DELVLAN; + } + + return 0; +} + +static inline int br_opt_get(const struct net_bridge *br, + enum net_bridge_opts opt) +{ + return test_bit(opt, &br->options); +} + +int br_boolopt_toggle(struct net_bridge *br, enum br_boolopt_id opt, bool on, + struct netlink_ext_ack *extack); +int br_boolopt_get(const struct net_bridge *br, enum br_boolopt_id opt); +int br_boolopt_multi_toggle(struct net_bridge *br, + struct br_boolopt_multi *bm, + struct netlink_ext_ack *extack); +void br_boolopt_multi_get(const struct net_bridge *br, + struct br_boolopt_multi *bm); +void br_opt_toggle(struct net_bridge *br, enum net_bridge_opts opt, bool on); + +/* br_device.c */ +void br_dev_setup(struct net_device *dev); +void br_dev_delete(struct net_device *dev, struct list_head *list); +netdev_tx_t br_dev_xmit(struct sk_buff *skb, struct net_device *dev); +#ifdef CONFIG_NET_POLL_CONTROLLER +static inline void br_netpoll_send_skb(const struct net_bridge_port *p, + struct sk_buff *skb) +{ + netpoll_send_skb(p->np, skb); +} + +int br_netpoll_enable(struct net_bridge_port *p); +void br_netpoll_disable(struct net_bridge_port *p); +#else +static inline void br_netpoll_send_skb(const struct net_bridge_port *p, + struct sk_buff *skb) +{ +} + +static inline int br_netpoll_enable(struct net_bridge_port *p) +{ + return 0; +} + +static inline void br_netpoll_disable(struct net_bridge_port *p) +{ +} +#endif + +/* br_fdb.c */ +#define FDB_FLUSH_IGNORED_NDM_FLAGS (NTF_MASTER | NTF_SELF) +#define FDB_FLUSH_ALLOWED_NDM_STATES (NUD_PERMANENT | NUD_NOARP) +#define FDB_FLUSH_ALLOWED_NDM_FLAGS (NTF_USE | NTF_EXT_LEARNED | \ + NTF_STICKY | NTF_OFFLOADED) + +int br_fdb_init(void); +void br_fdb_fini(void); +int br_fdb_hash_init(struct net_bridge *br); +void br_fdb_hash_fini(struct net_bridge *br); +void br_fdb_flush(struct net_bridge *br, + const struct net_bridge_fdb_flush_desc *desc); +void br_fdb_find_delete_local(struct net_bridge *br, + const struct net_bridge_port *p, + const unsigned char *addr, u16 vid); +void br_fdb_changeaddr(struct net_bridge_port *p, const unsigned char *newaddr); +void br_fdb_change_mac_address(struct net_bridge *br, const u8 *newaddr); +void br_fdb_cleanup(struct work_struct *work); +void br_fdb_delete_by_port(struct net_bridge *br, + const struct net_bridge_port *p, u16 vid, int do_all); +struct net_bridge_fdb_entry *br_fdb_find_rcu(struct net_bridge *br, + const unsigned char *addr, + __u16 vid); +int br_fdb_test_addr(struct net_device *dev, unsigned char *addr); +int br_fdb_fillbuf(struct net_bridge *br, void *buf, unsigned long count, + unsigned long off); +int br_fdb_add_local(struct net_bridge *br, struct net_bridge_port *source, + const unsigned char *addr, u16 vid); +void br_fdb_update(struct net_bridge *br, struct net_bridge_port *source, + const unsigned char *addr, u16 vid, unsigned long flags); + +int br_fdb_delete(struct ndmsg *ndm, struct nlattr *tb[], + struct net_device *dev, const unsigned char *addr, u16 vid, + struct netlink_ext_ack *extack); +int br_fdb_delete_bulk(struct ndmsg *ndm, struct nlattr *tb[], + struct net_device *dev, u16 vid, + struct netlink_ext_ack *extack); +int br_fdb_add(struct ndmsg *nlh, struct nlattr *tb[], struct net_device *dev, + const unsigned char *addr, u16 vid, u16 nlh_flags, + struct netlink_ext_ack *extack); +int br_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb, + struct net_device *dev, struct net_device *fdev, int *idx); +int br_fdb_get(struct sk_buff *skb, struct nlattr *tb[], struct net_device *dev, + const unsigned char *addr, u16 vid, u32 portid, u32 seq, + struct netlink_ext_ack *extack); +int br_fdb_sync_static(struct net_bridge *br, struct net_bridge_port *p); +void br_fdb_unsync_static(struct net_bridge *br, struct net_bridge_port *p); +int br_fdb_external_learn_add(struct net_bridge *br, struct net_bridge_port *p, + const unsigned char *addr, u16 vid, + bool swdev_notify); +int br_fdb_external_learn_del(struct net_bridge *br, struct net_bridge_port *p, + const unsigned char *addr, u16 vid, + bool swdev_notify); +void br_fdb_offloaded_set(struct net_bridge *br, struct net_bridge_port *p, + const unsigned char *addr, u16 vid, bool offloaded); + +/* br_forward.c */ +enum br_pkt_type { + BR_PKT_UNICAST, + BR_PKT_MULTICAST, + BR_PKT_BROADCAST +}; +int br_dev_queue_push_xmit(struct net *net, struct sock *sk, struct sk_buff *skb); +void br_forward(const struct net_bridge_port *to, struct sk_buff *skb, + bool local_rcv, bool local_orig); +int br_forward_finish(struct net *net, struct sock *sk, struct sk_buff *skb); +void br_flood(struct net_bridge *br, struct sk_buff *skb, + enum br_pkt_type pkt_type, bool local_rcv, bool local_orig); + +/* return true if both source port and dest port are isolated */ +static inline bool br_skb_isolated(const struct net_bridge_port *to, + const struct sk_buff *skb) +{ + return BR_INPUT_SKB_CB(skb)->src_port_isolated && + (to->flags & BR_ISOLATED); +} + +/* br_if.c */ +void br_port_carrier_check(struct net_bridge_port *p, bool *notified); +int br_add_bridge(struct net *net, const char *name); +int br_del_bridge(struct net *net, const char *name); +int br_add_if(struct net_bridge *br, struct net_device *dev, + struct netlink_ext_ack *extack); +int br_del_if(struct net_bridge *br, struct net_device *dev); +void br_mtu_auto_adjust(struct net_bridge *br); +netdev_features_t br_features_recompute(struct net_bridge *br, + netdev_features_t features); +void br_port_flags_change(struct net_bridge_port *port, unsigned long mask); +void br_manage_promisc(struct net_bridge *br); +int nbp_backup_change(struct net_bridge_port *p, struct net_device *backup_dev); + +/* br_input.c */ +int br_handle_frame_finish(struct net *net, struct sock *sk, struct sk_buff *skb); +rx_handler_func_t *br_get_rx_handler(const struct net_device *dev); + +struct br_frame_type { + __be16 type; + int (*frame_handler)(struct net_bridge_port *port, + struct sk_buff *skb); + struct hlist_node list; +}; + +void br_add_frame(struct net_bridge *br, struct br_frame_type *ft); +void br_del_frame(struct net_bridge *br, struct br_frame_type *ft); + +static inline bool br_rx_handler_check_rcu(const struct net_device *dev) +{ + return rcu_dereference(dev->rx_handler) == br_get_rx_handler(dev); +} + +static inline bool br_rx_handler_check_rtnl(const struct net_device *dev) +{ + return rcu_dereference_rtnl(dev->rx_handler) == br_get_rx_handler(dev); +} + +static inline struct net_bridge_port *br_port_get_check_rcu(const struct net_device *dev) +{ + return br_rx_handler_check_rcu(dev) ? br_port_get_rcu(dev) : NULL; +} + +static inline struct net_bridge_port * +br_port_get_check_rtnl(const struct net_device *dev) +{ + return br_rx_handler_check_rtnl(dev) ? br_port_get_rtnl_rcu(dev) : NULL; +} + +/* br_ioctl.c */ +int br_dev_siocdevprivate(struct net_device *dev, struct ifreq *rq, + void __user *data, int cmd); +int br_ioctl_stub(struct net *net, struct net_bridge *br, unsigned int cmd, + struct ifreq *ifr, void __user *uarg); + +/* br_multicast.c */ +#ifdef CONFIG_BRIDGE_IGMP_SNOOPING +int br_multicast_rcv(struct net_bridge_mcast **brmctx, + struct net_bridge_mcast_port **pmctx, + struct net_bridge_vlan *vlan, + struct sk_buff *skb, u16 vid); +struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge_mcast *brmctx, + struct sk_buff *skb, u16 vid); +int br_multicast_add_port(struct net_bridge_port *port); +void br_multicast_del_port(struct net_bridge_port *port); +void br_multicast_enable_port(struct net_bridge_port *port); +void br_multicast_disable_port(struct net_bridge_port *port); +void br_multicast_init(struct net_bridge *br); +void br_multicast_join_snoopers(struct net_bridge *br); +void br_multicast_leave_snoopers(struct net_bridge *br); +void br_multicast_open(struct net_bridge *br); +void br_multicast_stop(struct net_bridge *br); +void br_multicast_dev_del(struct net_bridge *br); +void br_multicast_flood(struct net_bridge_mdb_entry *mdst, struct sk_buff *skb, + struct net_bridge_mcast *brmctx, + bool local_rcv, bool local_orig); +int br_multicast_set_router(struct net_bridge_mcast *brmctx, unsigned long val); +int br_multicast_set_port_router(struct net_bridge_mcast_port *pmctx, + unsigned long val); +int br_multicast_set_vlan_router(struct net_bridge_vlan *v, u8 mcast_router); +int br_multicast_toggle(struct net_bridge *br, unsigned long val, + struct netlink_ext_ack *extack); +int br_multicast_set_querier(struct net_bridge_mcast *brmctx, unsigned long val); +int br_multicast_set_hash_max(struct net_bridge *br, unsigned long val); +int br_multicast_set_igmp_version(struct net_bridge_mcast *brmctx, + unsigned long val); +#if IS_ENABLED(CONFIG_IPV6) +int br_multicast_set_mld_version(struct net_bridge_mcast *brmctx, + unsigned long val); +#endif +struct net_bridge_mdb_entry * +br_mdb_ip_get(struct net_bridge *br, struct br_ip *dst); +struct net_bridge_mdb_entry * +br_multicast_new_group(struct net_bridge *br, struct br_ip *group); +struct net_bridge_port_group * +br_multicast_new_port_group(struct net_bridge_port *port, struct br_ip *group, + struct net_bridge_port_group __rcu *next, + unsigned char flags, const unsigned char *src, + u8 filter_mode, u8 rt_protocol); +int br_mdb_hash_init(struct net_bridge *br); +void br_mdb_hash_fini(struct net_bridge *br); +void br_mdb_notify(struct net_device *dev, struct net_bridge_mdb_entry *mp, + struct net_bridge_port_group *pg, int type); +void br_rtr_notify(struct net_device *dev, struct net_bridge_mcast_port *pmctx, + int type); +void br_multicast_del_pg(struct net_bridge_mdb_entry *mp, + struct net_bridge_port_group *pg, + struct net_bridge_port_group __rcu **pp); +void br_multicast_count(struct net_bridge *br, + const struct net_bridge_port *p, + const struct sk_buff *skb, u8 type, u8 dir); +int br_multicast_init_stats(struct net_bridge *br); +void br_multicast_uninit_stats(struct net_bridge *br); +void br_multicast_get_stats(const struct net_bridge *br, + const struct net_bridge_port *p, + struct br_mcast_stats *dest); +void br_mdb_init(void); +void br_mdb_uninit(void); +void br_multicast_host_join(const struct net_bridge_mcast *brmctx, + struct net_bridge_mdb_entry *mp, bool notify); +void br_multicast_host_leave(struct net_bridge_mdb_entry *mp, bool notify); +void br_multicast_star_g_handle_mode(struct net_bridge_port_group *pg, + u8 filter_mode); +void br_multicast_sg_add_exclude_ports(struct net_bridge_mdb_entry *star_mp, + struct net_bridge_port_group *sg); +struct net_bridge_group_src * +br_multicast_find_group_src(struct net_bridge_port_group *pg, struct br_ip *ip); +void br_multicast_del_group_src(struct net_bridge_group_src *src, + bool fastleave); +void br_multicast_ctx_init(struct net_bridge *br, + struct net_bridge_vlan *vlan, + struct net_bridge_mcast *brmctx); +void br_multicast_ctx_deinit(struct net_bridge_mcast *brmctx); +void br_multicast_port_ctx_init(struct net_bridge_port *port, + struct net_bridge_vlan *vlan, + struct net_bridge_mcast_port *pmctx); +void br_multicast_port_ctx_deinit(struct net_bridge_mcast_port *pmctx); +void br_multicast_toggle_one_vlan(struct net_bridge_vlan *vlan, bool on); +int br_multicast_toggle_vlan_snooping(struct net_bridge *br, bool on, + struct netlink_ext_ack *extack); +bool br_multicast_toggle_global_vlan(struct net_bridge_vlan *vlan, bool on); + +int br_rports_fill_info(struct sk_buff *skb, + const struct net_bridge_mcast *brmctx); +int br_multicast_dump_querier_state(struct sk_buff *skb, + const struct net_bridge_mcast *brmctx, + int nest_attr); +size_t br_multicast_querier_state_size(void); +size_t br_rports_size(const struct net_bridge_mcast *brmctx); +void br_multicast_set_query_intvl(struct net_bridge_mcast *brmctx, + unsigned long val); +void br_multicast_set_startup_query_intvl(struct net_bridge_mcast *brmctx, + unsigned long val); + +static inline bool br_group_is_l2(const struct br_ip *group) +{ + return group->proto == 0; +} + +#define mlock_dereference(X, br) \ + rcu_dereference_protected(X, lockdep_is_held(&br->multicast_lock)) + +static inline struct hlist_node * +br_multicast_get_first_rport_node(struct net_bridge_mcast *brmctx, + struct sk_buff *skb) +{ +#if IS_ENABLED(CONFIG_IPV6) + if (skb->protocol == htons(ETH_P_IPV6)) + return rcu_dereference(hlist_first_rcu(&brmctx->ip6_mc_router_list)); +#endif + return rcu_dereference(hlist_first_rcu(&brmctx->ip4_mc_router_list)); +} + +static inline struct net_bridge_port * +br_multicast_rport_from_node_skb(struct hlist_node *rp, struct sk_buff *skb) +{ + struct net_bridge_mcast_port *mctx; + +#if IS_ENABLED(CONFIG_IPV6) + if (skb->protocol == htons(ETH_P_IPV6)) + mctx = hlist_entry_safe(rp, struct net_bridge_mcast_port, + ip6_rlist); + else +#endif + mctx = hlist_entry_safe(rp, struct net_bridge_mcast_port, + ip4_rlist); + + if (mctx) + return mctx->port; + else + return NULL; +} + +static inline bool br_ip4_multicast_is_router(struct net_bridge_mcast *brmctx) +{ + return timer_pending(&brmctx->ip4_mc_router_timer); +} + +static inline bool br_ip6_multicast_is_router(struct net_bridge_mcast *brmctx) +{ +#if IS_ENABLED(CONFIG_IPV6) + return timer_pending(&brmctx->ip6_mc_router_timer); +#else + return false; +#endif +} + +static inline bool +br_multicast_is_router(struct net_bridge_mcast *brmctx, struct sk_buff *skb) +{ + switch (brmctx->multicast_router) { + case MDB_RTR_TYPE_PERM: + return true; + case MDB_RTR_TYPE_TEMP_QUERY: + if (skb) { + if (skb->protocol == htons(ETH_P_IP)) + return br_ip4_multicast_is_router(brmctx); + else if (skb->protocol == htons(ETH_P_IPV6)) + return br_ip6_multicast_is_router(brmctx); + } else { + return br_ip4_multicast_is_router(brmctx) || + br_ip6_multicast_is_router(brmctx); + } + fallthrough; + default: + return false; + } +} + +static inline bool +__br_multicast_querier_exists(struct net_bridge_mcast *brmctx, + struct bridge_mcast_other_query *querier, + const bool is_ipv6) +{ + bool own_querier_enabled; + + if (brmctx->multicast_querier) { + if (is_ipv6 && !br_opt_get(brmctx->br, BROPT_HAS_IPV6_ADDR)) + own_querier_enabled = false; + else + own_querier_enabled = true; + } else { + own_querier_enabled = false; + } + + return time_is_before_jiffies(querier->delay_time) && + (own_querier_enabled || timer_pending(&querier->timer)); +} + +static inline bool br_multicast_querier_exists(struct net_bridge_mcast *brmctx, + struct ethhdr *eth, + const struct net_bridge_mdb_entry *mdb) +{ + switch (eth->h_proto) { + case (htons(ETH_P_IP)): + return __br_multicast_querier_exists(brmctx, + &brmctx->ip4_other_query, false); +#if IS_ENABLED(CONFIG_IPV6) + case (htons(ETH_P_IPV6)): + return __br_multicast_querier_exists(brmctx, + &brmctx->ip6_other_query, true); +#endif + default: + return !!mdb && br_group_is_l2(&mdb->addr); + } +} + +static inline bool br_multicast_is_star_g(const struct br_ip *ip) +{ + switch (ip->proto) { + case htons(ETH_P_IP): + return ipv4_is_zeronet(ip->src.ip4); +#if IS_ENABLED(CONFIG_IPV6) + case htons(ETH_P_IPV6): + return ipv6_addr_any(&ip->src.ip6); +#endif + default: + return false; + } +} + +static inline bool +br_multicast_should_handle_mode(const struct net_bridge_mcast *brmctx, + __be16 proto) +{ + switch (proto) { + case htons(ETH_P_IP): + return !!(brmctx->multicast_igmp_version == 3); +#if IS_ENABLED(CONFIG_IPV6) + case htons(ETH_P_IPV6): + return !!(brmctx->multicast_mld_version == 2); +#endif + default: + return false; + } +} + +static inline int br_multicast_igmp_type(const struct sk_buff *skb) +{ + return BR_INPUT_SKB_CB(skb)->igmp; +} + +static inline unsigned long br_multicast_lmqt(const struct net_bridge_mcast *brmctx) +{ + return brmctx->multicast_last_member_interval * + brmctx->multicast_last_member_count; +} + +static inline unsigned long br_multicast_gmi(const struct net_bridge_mcast *brmctx) +{ + return brmctx->multicast_membership_interval; +} + +static inline bool +br_multicast_ctx_is_vlan(const struct net_bridge_mcast *brmctx) +{ + return !!brmctx->vlan; +} + +static inline bool +br_multicast_port_ctx_is_vlan(const struct net_bridge_mcast_port *pmctx) +{ + return !!pmctx->vlan; +} + +static inline struct net_bridge_mcast * +br_multicast_port_ctx_get_global(const struct net_bridge_mcast_port *pmctx) +{ + if (!br_multicast_port_ctx_is_vlan(pmctx)) + return &pmctx->port->br->multicast_ctx; + else + return &pmctx->vlan->brvlan->br_mcast_ctx; +} + +static inline bool +br_multicast_ctx_vlan_global_disabled(const struct net_bridge_mcast *brmctx) +{ + return br_multicast_ctx_is_vlan(brmctx) && + (!br_opt_get(brmctx->br, BROPT_MCAST_VLAN_SNOOPING_ENABLED) || + !(brmctx->vlan->priv_flags & BR_VLFLAG_GLOBAL_MCAST_ENABLED)); +} + +static inline bool +br_multicast_ctx_vlan_disabled(const struct net_bridge_mcast *brmctx) +{ + return br_multicast_ctx_is_vlan(brmctx) && + !(brmctx->vlan->priv_flags & BR_VLFLAG_MCAST_ENABLED); +} + +static inline bool +br_multicast_port_ctx_vlan_disabled(const struct net_bridge_mcast_port *pmctx) +{ + return br_multicast_port_ctx_is_vlan(pmctx) && + !(pmctx->vlan->priv_flags & BR_VLFLAG_MCAST_ENABLED); +} + +static inline bool +br_multicast_port_ctx_state_disabled(const struct net_bridge_mcast_port *pmctx) +{ + return pmctx->port->state == BR_STATE_DISABLED || + (br_multicast_port_ctx_is_vlan(pmctx) && + (br_multicast_port_ctx_vlan_disabled(pmctx) || + pmctx->vlan->state == BR_STATE_DISABLED)); +} + +static inline bool +br_multicast_port_ctx_state_stopped(const struct net_bridge_mcast_port *pmctx) +{ + return br_multicast_port_ctx_state_disabled(pmctx) || + pmctx->port->state == BR_STATE_BLOCKING || + (br_multicast_port_ctx_is_vlan(pmctx) && + pmctx->vlan->state == BR_STATE_BLOCKING); +} + +static inline bool +br_rports_have_mc_router(const struct net_bridge_mcast *brmctx) +{ +#if IS_ENABLED(CONFIG_IPV6) + return !hlist_empty(&brmctx->ip4_mc_router_list) || + !hlist_empty(&brmctx->ip6_mc_router_list); +#else + return !hlist_empty(&brmctx->ip4_mc_router_list); +#endif +} + +static inline bool +br_multicast_ctx_options_equal(const struct net_bridge_mcast *brmctx1, + const struct net_bridge_mcast *brmctx2) +{ + return brmctx1->multicast_igmp_version == + brmctx2->multicast_igmp_version && + brmctx1->multicast_last_member_count == + brmctx2->multicast_last_member_count && + brmctx1->multicast_startup_query_count == + brmctx2->multicast_startup_query_count && + brmctx1->multicast_last_member_interval == + brmctx2->multicast_last_member_interval && + brmctx1->multicast_membership_interval == + brmctx2->multicast_membership_interval && + brmctx1->multicast_querier_interval == + brmctx2->multicast_querier_interval && + brmctx1->multicast_query_interval == + brmctx2->multicast_query_interval && + brmctx1->multicast_query_response_interval == + brmctx2->multicast_query_response_interval && + brmctx1->multicast_startup_query_interval == + brmctx2->multicast_startup_query_interval && + brmctx1->multicast_querier == brmctx2->multicast_querier && + brmctx1->multicast_router == brmctx2->multicast_router && + !br_rports_have_mc_router(brmctx1) && + !br_rports_have_mc_router(brmctx2) && +#if IS_ENABLED(CONFIG_IPV6) + brmctx1->multicast_mld_version == + brmctx2->multicast_mld_version && +#endif + true; +} + +static inline bool +br_multicast_ctx_matches_vlan_snooping(const struct net_bridge_mcast *brmctx) +{ + bool vlan_snooping_enabled; + + vlan_snooping_enabled = !!br_opt_get(brmctx->br, + BROPT_MCAST_VLAN_SNOOPING_ENABLED); + + return !!(vlan_snooping_enabled == br_multicast_ctx_is_vlan(brmctx)); +} +#else +static inline int br_multicast_rcv(struct net_bridge_mcast **brmctx, + struct net_bridge_mcast_port **pmctx, + struct net_bridge_vlan *vlan, + struct sk_buff *skb, + u16 vid) +{ + return 0; +} + +static inline struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge_mcast *brmctx, + struct sk_buff *skb, u16 vid) +{ + return NULL; +} + +static inline int br_multicast_add_port(struct net_bridge_port *port) +{ + return 0; +} + +static inline void br_multicast_del_port(struct net_bridge_port *port) +{ +} + +static inline void br_multicast_enable_port(struct net_bridge_port *port) +{ +} + +static inline void br_multicast_disable_port(struct net_bridge_port *port) +{ +} + +static inline void br_multicast_init(struct net_bridge *br) +{ +} + +static inline void br_multicast_join_snoopers(struct net_bridge *br) +{ +} + +static inline void br_multicast_leave_snoopers(struct net_bridge *br) +{ +} + +static inline void br_multicast_open(struct net_bridge *br) +{ +} + +static inline void br_multicast_stop(struct net_bridge *br) +{ +} + +static inline void br_multicast_dev_del(struct net_bridge *br) +{ +} + +static inline void br_multicast_flood(struct net_bridge_mdb_entry *mdst, + struct sk_buff *skb, + struct net_bridge_mcast *brmctx, + bool local_rcv, bool local_orig) +{ +} + +static inline bool br_multicast_is_router(struct net_bridge_mcast *brmctx, + struct sk_buff *skb) +{ + return false; +} + +static inline bool br_multicast_querier_exists(struct net_bridge_mcast *brmctx, + struct ethhdr *eth, + const struct net_bridge_mdb_entry *mdb) +{ + return false; +} + +static inline void br_mdb_init(void) +{ +} + +static inline void br_mdb_uninit(void) +{ +} + +static inline int br_mdb_hash_init(struct net_bridge *br) +{ + return 0; +} + +static inline void br_mdb_hash_fini(struct net_bridge *br) +{ +} + +static inline void br_multicast_count(struct net_bridge *br, + const struct net_bridge_port *p, + const struct sk_buff *skb, + u8 type, u8 dir) +{ +} + +static inline int br_multicast_init_stats(struct net_bridge *br) +{ + return 0; +} + +static inline void br_multicast_uninit_stats(struct net_bridge *br) +{ +} + +static inline int br_multicast_igmp_type(const struct sk_buff *skb) +{ + return 0; +} + +static inline void br_multicast_ctx_init(struct net_bridge *br, + struct net_bridge_vlan *vlan, + struct net_bridge_mcast *brmctx) +{ +} + +static inline void br_multicast_ctx_deinit(struct net_bridge_mcast *brmctx) +{ +} + +static inline void br_multicast_port_ctx_init(struct net_bridge_port *port, + struct net_bridge_vlan *vlan, + struct net_bridge_mcast_port *pmctx) +{ +} + +static inline void br_multicast_port_ctx_deinit(struct net_bridge_mcast_port *pmctx) +{ +} + +static inline void br_multicast_toggle_one_vlan(struct net_bridge_vlan *vlan, + bool on) +{ +} + +static inline int br_multicast_toggle_vlan_snooping(struct net_bridge *br, + bool on, + struct netlink_ext_ack *extack) +{ + return -EOPNOTSUPP; +} + +static inline bool br_multicast_toggle_global_vlan(struct net_bridge_vlan *vlan, + bool on) +{ + return false; +} + +static inline bool +br_multicast_ctx_options_equal(const struct net_bridge_mcast *brmctx1, + const struct net_bridge_mcast *brmctx2) +{ + return true; +} +#endif + +/* br_vlan.c */ +#ifdef CONFIG_BRIDGE_VLAN_FILTERING +bool br_allowed_ingress(const struct net_bridge *br, + struct net_bridge_vlan_group *vg, struct sk_buff *skb, + u16 *vid, u8 *state, + struct net_bridge_vlan **vlan); +bool br_allowed_egress(struct net_bridge_vlan_group *vg, + const struct sk_buff *skb); +bool br_should_learn(struct net_bridge_port *p, struct sk_buff *skb, u16 *vid); +struct sk_buff *br_handle_vlan(struct net_bridge *br, + const struct net_bridge_port *port, + struct net_bridge_vlan_group *vg, + struct sk_buff *skb); +int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags, + bool *changed, struct netlink_ext_ack *extack); +int br_vlan_delete(struct net_bridge *br, u16 vid); +void br_vlan_flush(struct net_bridge *br); +struct net_bridge_vlan *br_vlan_find(struct net_bridge_vlan_group *vg, u16 vid); +void br_recalculate_fwd_mask(struct net_bridge *br); +int br_vlan_filter_toggle(struct net_bridge *br, unsigned long val, + struct netlink_ext_ack *extack); +int __br_vlan_set_proto(struct net_bridge *br, __be16 proto, + struct netlink_ext_ack *extack); +int br_vlan_set_proto(struct net_bridge *br, unsigned long val, + struct netlink_ext_ack *extack); +int br_vlan_set_stats(struct net_bridge *br, unsigned long val); +int br_vlan_set_stats_per_port(struct net_bridge *br, unsigned long val); +int br_vlan_init(struct net_bridge *br); +int br_vlan_set_default_pvid(struct net_bridge *br, unsigned long val, + struct netlink_ext_ack *extack); +int __br_vlan_set_default_pvid(struct net_bridge *br, u16 pvid, + struct netlink_ext_ack *extack); +int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags, + bool *changed, struct netlink_ext_ack *extack); +int nbp_vlan_delete(struct net_bridge_port *port, u16 vid); +void nbp_vlan_flush(struct net_bridge_port *port); +int nbp_vlan_init(struct net_bridge_port *port, struct netlink_ext_ack *extack); +int nbp_get_num_vlan_infos(struct net_bridge_port *p, u32 filter_mask); +void br_vlan_get_stats(const struct net_bridge_vlan *v, + struct pcpu_sw_netstats *stats); +void br_vlan_port_event(struct net_bridge_port *p, unsigned long event); +int br_vlan_bridge_event(struct net_device *dev, unsigned long event, + void *ptr); +void br_vlan_rtnl_init(void); +void br_vlan_rtnl_uninit(void); +void br_vlan_notify(const struct net_bridge *br, + const struct net_bridge_port *p, + u16 vid, u16 vid_range, + int cmd); +bool br_vlan_can_enter_range(const struct net_bridge_vlan *v_curr, + const struct net_bridge_vlan *range_end); + +void br_vlan_fill_forward_path_pvid(struct net_bridge *br, + struct net_device_path_ctx *ctx, + struct net_device_path *path); +int br_vlan_fill_forward_path_mode(struct net_bridge *br, + struct net_bridge_port *dst, + struct net_device_path *path); + +static inline struct net_bridge_vlan_group *br_vlan_group( + const struct net_bridge *br) +{ + return rtnl_dereference(br->vlgrp); +} + +static inline struct net_bridge_vlan_group *nbp_vlan_group( + const struct net_bridge_port *p) +{ + return rtnl_dereference(p->vlgrp); +} + +static inline struct net_bridge_vlan_group *br_vlan_group_rcu( + const struct net_bridge *br) +{ + return rcu_dereference(br->vlgrp); +} + +static inline struct net_bridge_vlan_group *nbp_vlan_group_rcu( + const struct net_bridge_port *p) +{ + return rcu_dereference(p->vlgrp); +} + +/* Since bridge now depends on 8021Q module, but the time bridge sees the + * skb, the vlan tag will always be present if the frame was tagged. + */ +static inline int br_vlan_get_tag(const struct sk_buff *skb, u16 *vid) +{ + int err = 0; + + if (skb_vlan_tag_present(skb)) { + *vid = skb_vlan_tag_get_id(skb); + } else { + *vid = 0; + err = -EINVAL; + } + + return err; +} + +static inline u16 br_get_pvid(const struct net_bridge_vlan_group *vg) +{ + if (!vg) + return 0; + + smp_rmb(); + return vg->pvid; +} + +static inline u16 br_vlan_flags(const struct net_bridge_vlan *v, u16 pvid) +{ + return v->vid == pvid ? v->flags | BRIDGE_VLAN_INFO_PVID : v->flags; +} +#else +static inline bool br_allowed_ingress(const struct net_bridge *br, + struct net_bridge_vlan_group *vg, + struct sk_buff *skb, + u16 *vid, u8 *state, + struct net_bridge_vlan **vlan) + +{ + *vlan = NULL; + return true; +} + +static inline bool br_allowed_egress(struct net_bridge_vlan_group *vg, + const struct sk_buff *skb) +{ + return true; +} + +static inline bool br_should_learn(struct net_bridge_port *p, + struct sk_buff *skb, u16 *vid) +{ + return true; +} + +static inline struct sk_buff *br_handle_vlan(struct net_bridge *br, + const struct net_bridge_port *port, + struct net_bridge_vlan_group *vg, + struct sk_buff *skb) +{ + return skb; +} + +static inline int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags, + bool *changed, struct netlink_ext_ack *extack) +{ + *changed = false; + return -EOPNOTSUPP; +} + +static inline int br_vlan_delete(struct net_bridge *br, u16 vid) +{ + return -EOPNOTSUPP; +} + +static inline void br_vlan_flush(struct net_bridge *br) +{ +} + +static inline void br_recalculate_fwd_mask(struct net_bridge *br) +{ +} + +static inline int br_vlan_init(struct net_bridge *br) +{ + return 0; +} + +static inline int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags, + bool *changed, struct netlink_ext_ack *extack) +{ + *changed = false; + return -EOPNOTSUPP; +} + +static inline int nbp_vlan_delete(struct net_bridge_port *port, u16 vid) +{ + return -EOPNOTSUPP; +} + +static inline void nbp_vlan_flush(struct net_bridge_port *port) +{ +} + +static inline struct net_bridge_vlan *br_vlan_find(struct net_bridge_vlan_group *vg, + u16 vid) +{ + return NULL; +} + +static inline int nbp_vlan_init(struct net_bridge_port *port, + struct netlink_ext_ack *extack) +{ + return 0; +} + +static inline u16 br_vlan_get_tag(const struct sk_buff *skb, u16 *tag) +{ + return 0; +} + +static inline u16 br_get_pvid(const struct net_bridge_vlan_group *vg) +{ + return 0; +} + +static inline int br_vlan_filter_toggle(struct net_bridge *br, + unsigned long val, + struct netlink_ext_ack *extack) +{ + return -EOPNOTSUPP; +} + +static inline int nbp_get_num_vlan_infos(struct net_bridge_port *p, + u32 filter_mask) +{ + return 0; +} + +static inline void br_vlan_fill_forward_path_pvid(struct net_bridge *br, + struct net_device_path_ctx *ctx, + struct net_device_path *path) +{ +} + +static inline int br_vlan_fill_forward_path_mode(struct net_bridge *br, + struct net_bridge_port *dst, + struct net_device_path *path) +{ + return 0; +} + +static inline struct net_bridge_vlan_group *br_vlan_group( + const struct net_bridge *br) +{ + return NULL; +} + +static inline struct net_bridge_vlan_group *nbp_vlan_group( + const struct net_bridge_port *p) +{ + return NULL; +} + +static inline struct net_bridge_vlan_group *br_vlan_group_rcu( + const struct net_bridge *br) +{ + return NULL; +} + +static inline struct net_bridge_vlan_group *nbp_vlan_group_rcu( + const struct net_bridge_port *p) +{ + return NULL; +} + +static inline void br_vlan_get_stats(const struct net_bridge_vlan *v, + struct pcpu_sw_netstats *stats) +{ +} + +static inline void br_vlan_port_event(struct net_bridge_port *p, + unsigned long event) +{ +} + +static inline int br_vlan_bridge_event(struct net_device *dev, + unsigned long event, void *ptr) +{ + return 0; +} + +static inline void br_vlan_rtnl_init(void) +{ +} + +static inline void br_vlan_rtnl_uninit(void) +{ +} + +static inline void br_vlan_notify(const struct net_bridge *br, + const struct net_bridge_port *p, + u16 vid, u16 vid_range, + int cmd) +{ +} + +static inline bool br_vlan_can_enter_range(const struct net_bridge_vlan *v_curr, + const struct net_bridge_vlan *range_end) +{ + return true; +} + +static inline u16 br_vlan_flags(const struct net_bridge_vlan *v, u16 pvid) +{ + return 0; +} + +#endif + +/* br_vlan_options.c */ +#ifdef CONFIG_BRIDGE_VLAN_FILTERING +bool br_vlan_opts_eq_range(const struct net_bridge_vlan *v_curr, + const struct net_bridge_vlan *range_end); +bool br_vlan_opts_fill(struct sk_buff *skb, const struct net_bridge_vlan *v); +size_t br_vlan_opts_nl_size(void); +int br_vlan_process_options(const struct net_bridge *br, + const struct net_bridge_port *p, + struct net_bridge_vlan *range_start, + struct net_bridge_vlan *range_end, + struct nlattr **tb, + struct netlink_ext_ack *extack); +int br_vlan_rtm_process_global_options(struct net_device *dev, + const struct nlattr *attr, + int cmd, + struct netlink_ext_ack *extack); +bool br_vlan_global_opts_can_enter_range(const struct net_bridge_vlan *v_curr, + const struct net_bridge_vlan *r_end); +bool br_vlan_global_opts_fill(struct sk_buff *skb, u16 vid, u16 vid_range, + const struct net_bridge_vlan *v_opts); + +/* vlan state manipulation helpers using *_ONCE to annotate lock-free access */ +static inline u8 br_vlan_get_state(const struct net_bridge_vlan *v) +{ + return READ_ONCE(v->state); +} + +static inline void br_vlan_set_state(struct net_bridge_vlan *v, u8 state) +{ + WRITE_ONCE(v->state, state); +} + +static inline u8 br_vlan_get_pvid_state(const struct net_bridge_vlan_group *vg) +{ + return READ_ONCE(vg->pvid_state); +} + +static inline void br_vlan_set_pvid_state(struct net_bridge_vlan_group *vg, + u8 state) +{ + WRITE_ONCE(vg->pvid_state, state); +} + +/* learn_allow is true at ingress and false at egress */ +static inline bool br_vlan_state_allowed(u8 state, bool learn_allow) +{ + switch (state) { + case BR_STATE_LEARNING: + return learn_allow; + case BR_STATE_FORWARDING: + return true; + default: + return false; + } +} +#endif + +/* br_mst.c */ +#ifdef CONFIG_BRIDGE_VLAN_FILTERING +DECLARE_STATIC_KEY_FALSE(br_mst_used); +static inline bool br_mst_is_enabled(struct net_bridge *br) +{ + return static_branch_unlikely(&br_mst_used) && + br_opt_get(br, BROPT_MST_ENABLED); +} + +int br_mst_set_state(struct net_bridge_port *p, u16 msti, u8 state, + struct netlink_ext_ack *extack); +int br_mst_vlan_set_msti(struct net_bridge_vlan *v, u16 msti); +void br_mst_vlan_init_state(struct net_bridge_vlan *v); +int br_mst_set_enabled(struct net_bridge *br, bool on, + struct netlink_ext_ack *extack); +size_t br_mst_info_size(const struct net_bridge_vlan_group *vg); +int br_mst_fill_info(struct sk_buff *skb, + const struct net_bridge_vlan_group *vg); +int br_mst_process(struct net_bridge_port *p, const struct nlattr *mst_attr, + struct netlink_ext_ack *extack); +#else +static inline bool br_mst_is_enabled(struct net_bridge *br) +{ + return false; +} + +static inline int br_mst_set_state(struct net_bridge_port *p, u16 msti, + u8 state, struct netlink_ext_ack *extack) +{ + return -EOPNOTSUPP; +} + +static inline int br_mst_set_enabled(struct net_bridge *br, bool on, + struct netlink_ext_ack *extack) +{ + return -EOPNOTSUPP; +} + +static inline size_t br_mst_info_size(const struct net_bridge_vlan_group *vg) +{ + return 0; +} + +static inline int br_mst_fill_info(struct sk_buff *skb, + const struct net_bridge_vlan_group *vg) +{ + return -EOPNOTSUPP; +} + +static inline int br_mst_process(struct net_bridge_port *p, + const struct nlattr *mst_attr, + struct netlink_ext_ack *extack) +{ + return -EOPNOTSUPP; +} +#endif + +struct nf_br_ops { + int (*br_dev_xmit_hook)(struct sk_buff *skb); +}; +extern const struct nf_br_ops __rcu *nf_br_ops; + +/* br_netfilter.c */ +#if IS_ENABLED(CONFIG_BRIDGE_NETFILTER) +int br_nf_core_init(void); +void br_nf_core_fini(void); +void br_netfilter_rtable_init(struct net_bridge *); +#else +static inline int br_nf_core_init(void) { return 0; } +static inline void br_nf_core_fini(void) {} +#define br_netfilter_rtable_init(x) +#endif + +/* br_stp.c */ +void br_set_state(struct net_bridge_port *p, unsigned int state); +struct net_bridge_port *br_get_port(struct net_bridge *br, u16 port_no); +void br_init_port(struct net_bridge_port *p); +void br_become_designated_port(struct net_bridge_port *p); + +void __br_set_forward_delay(struct net_bridge *br, unsigned long t); +int br_set_forward_delay(struct net_bridge *br, unsigned long x); +int br_set_hello_time(struct net_bridge *br, unsigned long x); +int br_set_max_age(struct net_bridge *br, unsigned long x); +int __set_ageing_time(struct net_device *dev, unsigned long t); +int br_set_ageing_time(struct net_bridge *br, clock_t ageing_time); + + +/* br_stp_if.c */ +void br_stp_enable_bridge(struct net_bridge *br); +void br_stp_disable_bridge(struct net_bridge *br); +int br_stp_set_enabled(struct net_bridge *br, unsigned long val, + struct netlink_ext_ack *extack); +void br_stp_enable_port(struct net_bridge_port *p); +void br_stp_disable_port(struct net_bridge_port *p); +bool br_stp_recalculate_bridge_id(struct net_bridge *br); +void br_stp_change_bridge_id(struct net_bridge *br, const unsigned char *a); +void br_stp_set_bridge_priority(struct net_bridge *br, u16 newprio); +int br_stp_set_port_priority(struct net_bridge_port *p, unsigned long newprio); +int br_stp_set_path_cost(struct net_bridge_port *p, unsigned long path_cost); +ssize_t br_show_bridge_id(char *buf, const struct bridge_id *id); + +/* br_stp_bpdu.c */ +struct stp_proto; +void br_stp_rcv(const struct stp_proto *proto, struct sk_buff *skb, + struct net_device *dev); + +/* br_stp_timer.c */ +void br_stp_timer_init(struct net_bridge *br); +void br_stp_port_timer_init(struct net_bridge_port *p); +unsigned long br_timer_value(const struct timer_list *timer); + +/* br.c */ +#if IS_ENABLED(CONFIG_ATM_LANE) +extern int (*br_fdb_test_addr_hook)(struct net_device *dev, unsigned char *addr); +#endif + +/* br_mrp.c */ +#if IS_ENABLED(CONFIG_BRIDGE_MRP) +int br_mrp_parse(struct net_bridge *br, struct net_bridge_port *p, + struct nlattr *attr, int cmd, struct netlink_ext_ack *extack); +bool br_mrp_enabled(struct net_bridge *br); +void br_mrp_port_del(struct net_bridge *br, struct net_bridge_port *p); +int br_mrp_fill_info(struct sk_buff *skb, struct net_bridge *br); +#else +static inline int br_mrp_parse(struct net_bridge *br, struct net_bridge_port *p, + struct nlattr *attr, int cmd, + struct netlink_ext_ack *extack) +{ + return -EOPNOTSUPP; +} + +static inline bool br_mrp_enabled(struct net_bridge *br) +{ + return false; +} + +static inline void br_mrp_port_del(struct net_bridge *br, + struct net_bridge_port *p) +{ +} + +static inline int br_mrp_fill_info(struct sk_buff *skb, struct net_bridge *br) +{ + return 0; +} + +#endif + +/* br_cfm.c */ +#if IS_ENABLED(CONFIG_BRIDGE_CFM) +int br_cfm_parse(struct net_bridge *br, struct net_bridge_port *p, + struct nlattr *attr, int cmd, struct netlink_ext_ack *extack); +bool br_cfm_created(struct net_bridge *br); +void br_cfm_port_del(struct net_bridge *br, struct net_bridge_port *p); +int br_cfm_config_fill_info(struct sk_buff *skb, struct net_bridge *br); +int br_cfm_status_fill_info(struct sk_buff *skb, + struct net_bridge *br, + bool getlink); +int br_cfm_mep_count(struct net_bridge *br, u32 *count); +int br_cfm_peer_mep_count(struct net_bridge *br, u32 *count); +#else +static inline int br_cfm_parse(struct net_bridge *br, struct net_bridge_port *p, + struct nlattr *attr, int cmd, + struct netlink_ext_ack *extack) +{ + return -EOPNOTSUPP; +} + +static inline bool br_cfm_created(struct net_bridge *br) +{ + return false; +} + +static inline void br_cfm_port_del(struct net_bridge *br, + struct net_bridge_port *p) +{ +} + +static inline int br_cfm_config_fill_info(struct sk_buff *skb, struct net_bridge *br) +{ + return -EOPNOTSUPP; +} + +static inline int br_cfm_status_fill_info(struct sk_buff *skb, + struct net_bridge *br, + bool getlink) +{ + return -EOPNOTSUPP; +} + +static inline int br_cfm_mep_count(struct net_bridge *br, u32 *count) +{ + *count = 0; + return -EOPNOTSUPP; +} + +static inline int br_cfm_peer_mep_count(struct net_bridge *br, u32 *count) +{ + *count = 0; + return -EOPNOTSUPP; +} +#endif + +/* br_netlink.c */ +extern struct rtnl_link_ops br_link_ops; +int br_netlink_init(void); +void br_netlink_fini(void); +void br_ifinfo_notify(int event, const struct net_bridge *br, + const struct net_bridge_port *port); +void br_info_notify(int event, const struct net_bridge *br, + const struct net_bridge_port *port, u32 filter); +int br_setlink(struct net_device *dev, struct nlmsghdr *nlmsg, u16 flags, + struct netlink_ext_ack *extack); +int br_dellink(struct net_device *dev, struct nlmsghdr *nlmsg, u16 flags); +int br_getlink(struct sk_buff *skb, u32 pid, u32 seq, struct net_device *dev, + u32 filter_mask, int nlflags); +int br_process_vlan_info(struct net_bridge *br, + struct net_bridge_port *p, int cmd, + struct bridge_vlan_info *vinfo_curr, + struct bridge_vlan_info **vinfo_last, + bool *changed, + struct netlink_ext_ack *extack); + +#ifdef CONFIG_SYSFS +/* br_sysfs_if.c */ +extern const struct sysfs_ops brport_sysfs_ops; +int br_sysfs_addif(struct net_bridge_port *p); +int br_sysfs_renameif(struct net_bridge_port *p); + +/* br_sysfs_br.c */ +int br_sysfs_addbr(struct net_device *dev); +void br_sysfs_delbr(struct net_device *dev); + +#else + +static inline int br_sysfs_addif(struct net_bridge_port *p) { return 0; } +static inline int br_sysfs_renameif(struct net_bridge_port *p) { return 0; } +static inline int br_sysfs_addbr(struct net_device *dev) { return 0; } +static inline void br_sysfs_delbr(struct net_device *dev) { return; } +#endif /* CONFIG_SYSFS */ + +/* br_switchdev.c */ +#ifdef CONFIG_NET_SWITCHDEV +int br_switchdev_port_offload(struct net_bridge_port *p, + struct net_device *dev, const void *ctx, + struct notifier_block *atomic_nb, + struct notifier_block *blocking_nb, + bool tx_fwd_offload, + struct netlink_ext_ack *extack); + +void br_switchdev_port_unoffload(struct net_bridge_port *p, const void *ctx, + struct notifier_block *atomic_nb, + struct notifier_block *blocking_nb); + +bool br_switchdev_frame_uses_tx_fwd_offload(struct sk_buff *skb); + +void br_switchdev_frame_set_offload_fwd_mark(struct sk_buff *skb); + +void nbp_switchdev_frame_mark_tx_fwd_offload(const struct net_bridge_port *p, + struct sk_buff *skb); +void nbp_switchdev_frame_mark_tx_fwd_to_hwdom(const struct net_bridge_port *p, + struct sk_buff *skb); +void nbp_switchdev_frame_mark(const struct net_bridge_port *p, + struct sk_buff *skb); +bool nbp_switchdev_allowed_egress(const struct net_bridge_port *p, + const struct sk_buff *skb); +int br_switchdev_set_port_flag(struct net_bridge_port *p, + unsigned long flags, + unsigned long mask, + struct netlink_ext_ack *extack); +void br_switchdev_fdb_notify(struct net_bridge *br, + const struct net_bridge_fdb_entry *fdb, int type); +void br_switchdev_mdb_notify(struct net_device *dev, + struct net_bridge_mdb_entry *mp, + struct net_bridge_port_group *pg, + int type); +int br_switchdev_port_vlan_add(struct net_device *dev, u16 vid, u16 flags, + bool changed, struct netlink_ext_ack *extack); +int br_switchdev_port_vlan_del(struct net_device *dev, u16 vid); +void br_switchdev_init(struct net_bridge *br); + +static inline void br_switchdev_frame_unmark(struct sk_buff *skb) +{ + skb->offload_fwd_mark = 0; +} +#else +static inline int +br_switchdev_port_offload(struct net_bridge_port *p, + struct net_device *dev, const void *ctx, + struct notifier_block *atomic_nb, + struct notifier_block *blocking_nb, + bool tx_fwd_offload, + struct netlink_ext_ack *extack) +{ + return -EOPNOTSUPP; +} + +static inline void +br_switchdev_port_unoffload(struct net_bridge_port *p, const void *ctx, + struct notifier_block *atomic_nb, + struct notifier_block *blocking_nb) +{ +} + +static inline bool br_switchdev_frame_uses_tx_fwd_offload(struct sk_buff *skb) +{ + return false; +} + +static inline void br_switchdev_frame_set_offload_fwd_mark(struct sk_buff *skb) +{ +} + +static inline void +nbp_switchdev_frame_mark_tx_fwd_offload(const struct net_bridge_port *p, + struct sk_buff *skb) +{ +} + +static inline void +nbp_switchdev_frame_mark_tx_fwd_to_hwdom(const struct net_bridge_port *p, + struct sk_buff *skb) +{ +} + +static inline void nbp_switchdev_frame_mark(const struct net_bridge_port *p, + struct sk_buff *skb) +{ +} + +static inline bool nbp_switchdev_allowed_egress(const struct net_bridge_port *p, + const struct sk_buff *skb) +{ + return true; +} + +static inline int br_switchdev_set_port_flag(struct net_bridge_port *p, + unsigned long flags, + unsigned long mask, + struct netlink_ext_ack *extack) +{ + return 0; +} + +static inline int br_switchdev_port_vlan_add(struct net_device *dev, u16 vid, + u16 flags, bool changed, + struct netlink_ext_ack *extack) +{ + return -EOPNOTSUPP; +} + +static inline int br_switchdev_port_vlan_del(struct net_device *dev, u16 vid) +{ + return -EOPNOTSUPP; +} + +static inline void +br_switchdev_fdb_notify(struct net_bridge *br, + const struct net_bridge_fdb_entry *fdb, int type) +{ +} + +static inline void br_switchdev_mdb_notify(struct net_device *dev, + struct net_bridge_mdb_entry *mp, + struct net_bridge_port_group *pg, + int type) +{ +} + +static inline void br_switchdev_frame_unmark(struct sk_buff *skb) +{ +} + +static inline void br_switchdev_init(struct net_bridge *br) +{ +} + +#endif /* CONFIG_NET_SWITCHDEV */ + +/* br_arp_nd_proxy.c */ +void br_recalculate_neigh_suppress_enabled(struct net_bridge *br); +void br_do_proxy_suppress_arp(struct sk_buff *skb, struct net_bridge *br, + u16 vid, struct net_bridge_port *p); +void br_do_suppress_nd(struct sk_buff *skb, struct net_bridge *br, + u16 vid, struct net_bridge_port *p, struct nd_msg *msg); +struct nd_msg *br_is_nd_neigh_msg(struct sk_buff *skb, struct nd_msg *m); +#endif |