// SPDX-License-Identifier: GPL-2.0-or-later /* * Bridge multicast support. * * Copyright (c) 2010 Herbert Xu <[email protected]> */ #include <linux/err.h> #include <linux/export.h> #include <linux/if_ether.h> #include <linux/igmp.h> #include <linux/in.h> #include <linux/jhash.h> #include <linux/kernel.h> #include <linux/log2.h> #include <linux/netdevice.h> #include <linux/netfilter_bridge.h> #include <linux/random.h> #include <linux/rculist.h> #include <linux/skbuff.h> #include <linux/slab.h> #include <linux/timer.h> #include <linux/inetdevice.h> #include <linux/mroute.h> #include <net/ip.h> #include <net/switchdev.h> #if IS_ENABLED(CONFIG_IPV6) #include <linux/icmpv6.h> #include <net/ipv6.h> #include <net/mld.h> #include <net/ip6_checksum.h> #include <net/addrconf.h> #endif #include <trace/events/bridge.h> #include "br_private.h" #include "br_private_mcast_eht.h" static const struct rhashtable_params br_mdb_rht_params = …; static const struct rhashtable_params br_sg_port_rht_params = …; static void br_multicast_start_querier(struct net_bridge_mcast *brmctx, struct bridge_mcast_own_query *query); static void br_ip4_multicast_add_router(struct net_bridge_mcast *brmctx, struct net_bridge_mcast_port *pmctx); static void br_ip4_multicast_leave_group(struct net_bridge_mcast *brmctx, struct net_bridge_mcast_port *pmctx, __be32 group, __u16 vid, const unsigned char *src); static void br_multicast_port_group_rexmit(struct timer_list *t); static void br_multicast_rport_del_notify(struct net_bridge_mcast_port *pmctx, bool deleted); static void br_ip6_multicast_add_router(struct net_bridge_mcast *brmctx, struct net_bridge_mcast_port *pmctx); #if IS_ENABLED(CONFIG_IPV6) static void br_ip6_multicast_leave_group(struct net_bridge_mcast *brmctx, struct net_bridge_mcast_port *pmctx, const struct in6_addr *group, __u16 vid, const unsigned char *src); #endif static struct net_bridge_port_group * __br_multicast_add_group(struct net_bridge_mcast *brmctx, struct net_bridge_mcast_port *pmctx, struct br_ip *group, const unsigned char *src, u8 filter_mode, bool igmpv2_mldv1, bool blocked); static void br_multicast_find_del_pg(struct net_bridge *br, struct net_bridge_port_group *pg); static void __br_multicast_stop(struct net_bridge_mcast *brmctx); static int br_mc_disabled_update(struct net_device *dev, bool value, struct netlink_ext_ack *extack); static struct net_bridge_port_group * br_sg_port_find(struct net_bridge *br, struct net_bridge_port_group_sg_key *sg_p) { … } static struct net_bridge_mdb_entry *br_mdb_ip_get_rcu(struct net_bridge *br, struct br_ip *dst) { … } struct net_bridge_mdb_entry *br_mdb_ip_get(struct net_bridge *br, struct br_ip *dst) { … } static struct net_bridge_mdb_entry *br_mdb_ip4_get(struct net_bridge *br, __be32 dst, __u16 vid) { … } #if IS_ENABLED(CONFIG_IPV6) static struct net_bridge_mdb_entry *br_mdb_ip6_get(struct net_bridge *br, const struct in6_addr *dst, __u16 vid) { … } #endif struct net_bridge_mdb_entry * br_mdb_entry_skb_get(struct net_bridge_mcast *brmctx, struct sk_buff *skb, u16 vid) { … } /* IMPORTANT: this function must be used only when the contexts cannot be * passed down (e.g. timer) and must be used for read-only purposes because * the vlan snooping option can change, so it can return any context * (non-vlan or vlan). Its initial intended purpose is to read timer values * from the *current* context based on the option. At worst that could lead * to inconsistent timers when the contexts are changed, i.e. src timer * which needs to re-arm with a specific delay taken from the old context */ static struct net_bridge_mcast_port * br_multicast_pg_to_port_ctx(const struct net_bridge_port_group *pg) { … } static struct net_bridge_mcast_port * br_multicast_port_vid_to_port_ctx(struct net_bridge_port *port, u16 vid) { … } /* when snooping we need to check if the contexts should be used * in the following order: * - if pmctx is non-NULL (port), check if it should be used * - if pmctx is NULL (bridge), check if brmctx should be used */ static bool br_multicast_ctx_should_use(const struct net_bridge_mcast *brmctx, const struct net_bridge_mcast_port *pmctx) { … } static bool br_port_group_equal(struct net_bridge_port_group *p, struct net_bridge_port *port, const unsigned char *src) { … } static void __fwd_add_star_excl(struct net_bridge_mcast_port *pmctx, struct net_bridge_port_group *pg, struct br_ip *sg_ip) { … } static void __fwd_del_star_excl(struct net_bridge_port_group *pg, struct br_ip *sg_ip) { … } /* When a port group transitions to (or is added as) EXCLUDE we need to add it * to all other ports' S,G entries which are not blocked by the current group * for proper replication, the assumption is that any S,G blocked entries * are already added so the S,G,port lookup should skip them. * When a port group transitions from EXCLUDE -> INCLUDE mode or is being * deleted we need to remove it from all ports' S,G entries where it was * automatically installed before (i.e. where it's MDB_PG_FLAGS_STAR_EXCL). */ void br_multicast_star_g_handle_mode(struct net_bridge_port_group *pg, u8 filter_mode) { … } /* called when adding a new S,G with host_joined == false by default */ static void br_multicast_sg_host_state(struct net_bridge_mdb_entry *star_mp, struct net_bridge_port_group *sg) { … } /* set the host_joined state of all of *,G's S,G entries */ static void br_multicast_star_g_host_state(struct net_bridge_mdb_entry *star_mp) { … } static void br_multicast_sg_del_exclude_ports(struct net_bridge_mdb_entry *sgmp) { … } void br_multicast_sg_add_exclude_ports(struct net_bridge_mdb_entry *star_mp, struct net_bridge_port_group *sg) { … } static void br_multicast_fwd_src_add(struct net_bridge_group_src *src) { … } static void br_multicast_fwd_src_remove(struct net_bridge_group_src *src, bool fastleave) { … } /* install S,G and based on src's timer enable or disable forwarding */ static void br_multicast_fwd_src_handle(struct net_bridge_group_src *src) { … } static void br_multicast_destroy_mdb_entry(struct net_bridge_mcast_gc *gc) { … } static void br_multicast_del_mdb_entry(struct net_bridge_mdb_entry *mp) { … } static void br_multicast_group_expired(struct timer_list *t) { … } static void br_multicast_destroy_group_src(struct net_bridge_mcast_gc *gc) { … } void __br_multicast_del_group_src(struct net_bridge_group_src *src) { … } void br_multicast_del_group_src(struct net_bridge_group_src *src, bool fastleave) { … } static int br_multicast_port_ngroups_inc_one(struct net_bridge_mcast_port *pmctx, struct netlink_ext_ack *extack, const char *what) { … } static void br_multicast_port_ngroups_dec_one(struct net_bridge_mcast_port *pmctx) { … } static int br_multicast_port_ngroups_inc(struct net_bridge_port *port, const struct br_ip *group, struct netlink_ext_ack *extack) { … } static void br_multicast_port_ngroups_dec(struct net_bridge_port *port, u16 vid) { … } u32 br_multicast_ngroups_get(const struct net_bridge_mcast_port *pmctx) { … } void br_multicast_ngroups_set_max(struct net_bridge_mcast_port *pmctx, u32 max) { … } u32 br_multicast_ngroups_get_max(const struct net_bridge_mcast_port *pmctx) { … } static void br_multicast_destroy_port_group(struct net_bridge_mcast_gc *gc) { … } void br_multicast_del_pg(struct net_bridge_mdb_entry *mp, struct net_bridge_port_group *pg, struct net_bridge_port_group __rcu **pp) { … } static void br_multicast_find_del_pg(struct net_bridge *br, struct net_bridge_port_group *pg) { … } static void br_multicast_port_group_expired(struct timer_list *t) { … } static void br_multicast_gc(struct hlist_head *head) { … } static void __br_multicast_query_handle_vlan(struct net_bridge_mcast *brmctx, struct net_bridge_mcast_port *pmctx, struct sk_buff *skb) { … } static struct sk_buff *br_ip4_multicast_alloc_query(struct net_bridge_mcast *brmctx, struct net_bridge_mcast_port *pmctx, struct net_bridge_port_group *pg, __be32 ip_dst, __be32 group, bool with_srcs, bool over_lmqt, u8 sflag, u8 *igmp_type, bool *need_rexmit) { … } #if IS_ENABLED(CONFIG_IPV6) static struct sk_buff *br_ip6_multicast_alloc_query(struct net_bridge_mcast *brmctx, struct net_bridge_mcast_port *pmctx, struct net_bridge_port_group *pg, const struct in6_addr *ip6_dst, const struct in6_addr *group, bool with_srcs, bool over_llqt, u8 sflag, u8 *igmp_type, bool *need_rexmit) { … } #endif static struct sk_buff *br_multicast_alloc_query(struct net_bridge_mcast *brmctx, struct net_bridge_mcast_port *pmctx, struct net_bridge_port_group *pg, struct br_ip *ip_dst, struct br_ip *group, bool with_srcs, bool over_lmqt, u8 sflag, u8 *igmp_type, bool *need_rexmit) { … } struct net_bridge_mdb_entry *br_multicast_new_group(struct net_bridge *br, struct br_ip *group) { … } static void br_multicast_group_src_expired(struct timer_list *t) { … } struct net_bridge_group_src * br_multicast_find_group_src(struct net_bridge_port_group *pg, struct br_ip *ip) { … } struct net_bridge_group_src * br_multicast_new_group_src(struct net_bridge_port_group *pg, struct br_ip *src_ip) { … } struct net_bridge_port_group *br_multicast_new_port_group( struct net_bridge_port *port, const struct br_ip *group, struct net_bridge_port_group __rcu *next, unsigned char flags, const unsigned char *src, u8 filter_mode, u8 rt_protocol, struct netlink_ext_ack *extack) { … } void br_multicast_del_port_group(struct net_bridge_port_group *p) { … } 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) { … } static struct net_bridge_port_group * __br_multicast_add_group(struct net_bridge_mcast *brmctx, struct net_bridge_mcast_port *pmctx, struct br_ip *group, const unsigned char *src, u8 filter_mode, bool igmpv2_mldv1, bool blocked) { … } static int br_multicast_add_group(struct net_bridge_mcast *brmctx, struct net_bridge_mcast_port *pmctx, struct br_ip *group, const unsigned char *src, u8 filter_mode, bool igmpv2_mldv1) { … } static int br_ip4_multicast_add_group(struct net_bridge_mcast *brmctx, struct net_bridge_mcast_port *pmctx, __be32 group, __u16 vid, const unsigned char *src, bool igmpv2) { … } #if IS_ENABLED(CONFIG_IPV6) static int br_ip6_multicast_add_group(struct net_bridge_mcast *brmctx, struct net_bridge_mcast_port *pmctx, const struct in6_addr *group, __u16 vid, const unsigned char *src, bool mldv1) { … } #endif static bool br_multicast_rport_del(struct hlist_node *rlist) { … } static bool br_ip4_multicast_rport_del(struct net_bridge_mcast_port *pmctx) { … } static bool br_ip6_multicast_rport_del(struct net_bridge_mcast_port *pmctx) { … } static void br_multicast_router_expired(struct net_bridge_mcast_port *pmctx, struct timer_list *t, struct hlist_node *rlist) { … } static void br_ip4_multicast_router_expired(struct timer_list *t) { … } #if IS_ENABLED(CONFIG_IPV6) static void br_ip6_multicast_router_expired(struct timer_list *t) { … } #endif static void br_mc_router_state_change(struct net_bridge *p, bool is_mc_router) { … } static void br_multicast_local_router_expired(struct net_bridge_mcast *brmctx, struct timer_list *timer) { … } static void br_ip4_multicast_local_router_expired(struct timer_list *t) { … } #if IS_ENABLED(CONFIG_IPV6) static void br_ip6_multicast_local_router_expired(struct timer_list *t) { … } #endif static void br_multicast_querier_expired(struct net_bridge_mcast *brmctx, struct bridge_mcast_own_query *query) { … } static void br_ip4_multicast_querier_expired(struct timer_list *t) { … } #if IS_ENABLED(CONFIG_IPV6) static void br_ip6_multicast_querier_expired(struct timer_list *t) { … } #endif static void br_multicast_query_delay_expired(struct timer_list *t) { … } static void br_multicast_select_own_querier(struct net_bridge_mcast *brmctx, struct br_ip *ip, struct sk_buff *skb) { … } static void __br_multicast_send_query(struct net_bridge_mcast *brmctx, struct net_bridge_mcast_port *pmctx, struct net_bridge_port_group *pg, struct br_ip *ip_dst, struct br_ip *group, bool with_srcs, u8 sflag, bool *need_rexmit) { … } static void br_multicast_read_querier(const struct bridge_mcast_querier *querier, struct bridge_mcast_querier *dest) { … } static void br_multicast_update_querier(struct net_bridge_mcast *brmctx, struct bridge_mcast_querier *querier, int ifindex, struct br_ip *saddr) { … } static void br_multicast_send_query(struct net_bridge_mcast *brmctx, struct net_bridge_mcast_port *pmctx, struct bridge_mcast_own_query *own_query) { … } static void br_multicast_port_query_expired(struct net_bridge_mcast_port *pmctx, struct bridge_mcast_own_query *query) { … } static void br_ip4_multicast_port_query_expired(struct timer_list *t) { … } #if IS_ENABLED(CONFIG_IPV6) static void br_ip6_multicast_port_query_expired(struct timer_list *t) { … } #endif static void br_multicast_port_group_rexmit(struct timer_list *t) { … } static int br_mc_disabled_update(struct net_device *dev, bool value, struct netlink_ext_ack *extack) { … } 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) { … } int br_multicast_add_port(struct net_bridge_port *port) { … } void br_multicast_del_port(struct net_bridge_port *port) { … } static void br_multicast_enable(struct bridge_mcast_own_query *query) { … } static void __br_multicast_enable_port_ctx(struct net_bridge_mcast_port *pmctx) { … } void br_multicast_enable_port(struct net_bridge_port *port) { … } static void __br_multicast_disable_port_ctx(struct net_bridge_mcast_port *pmctx) { … } void br_multicast_disable_port(struct net_bridge_port *port) { … } static int __grp_src_delete_marked(struct net_bridge_port_group *pg) { … } static void __grp_src_mod_timer(struct net_bridge_group_src *src, unsigned long expires) { … } static void __grp_src_query_marked_and_rexmit(struct net_bridge_mcast *brmctx, struct net_bridge_mcast_port *pmctx, struct net_bridge_port_group *pg) { … } static void __grp_send_query_and_rexmit(struct net_bridge_mcast *brmctx, struct net_bridge_mcast_port *pmctx, struct net_bridge_port_group *pg) { … } /* State Msg type New state Actions * INCLUDE (A) IS_IN (B) INCLUDE (A+B) (B)=GMI * INCLUDE (A) ALLOW (B) INCLUDE (A+B) (B)=GMI * EXCLUDE (X,Y) ALLOW (A) EXCLUDE (X+A,Y-A) (A)=GMI */ static bool br_multicast_isinc_allow(const struct net_bridge_mcast *brmctx, struct net_bridge_port_group *pg, void *h_addr, void *srcs, u32 nsrcs, size_t addr_size, int grec_type) { … } /* State Msg type New state Actions * INCLUDE (A) IS_EX (B) EXCLUDE (A*B,B-A) (B-A)=0 * Delete (A-B) * Group Timer=GMI */ static void __grp_src_isexc_incl(const struct net_bridge_mcast *brmctx, struct net_bridge_port_group *pg, void *h_addr, void *srcs, u32 nsrcs, size_t addr_size, int grec_type) { … } /* State Msg type New state Actions * EXCLUDE (X,Y) IS_EX (A) EXCLUDE (A-Y,Y*A) (A-X-Y)=GMI * Delete (X-A) * Delete (Y-A) * Group Timer=GMI */ static bool __grp_src_isexc_excl(const struct net_bridge_mcast *brmctx, struct net_bridge_port_group *pg, void *h_addr, void *srcs, u32 nsrcs, size_t addr_size, int grec_type) { … } static bool br_multicast_isexc(const struct net_bridge_mcast *brmctx, struct net_bridge_port_group *pg, void *h_addr, void *srcs, u32 nsrcs, size_t addr_size, int grec_type) { … } /* State Msg type New state Actions * INCLUDE (A) TO_IN (B) INCLUDE (A+B) (B)=GMI * Send Q(G,A-B) */ static bool __grp_src_toin_incl(struct net_bridge_mcast *brmctx, struct net_bridge_mcast_port *pmctx, struct net_bridge_port_group *pg, void *h_addr, void *srcs, u32 nsrcs, size_t addr_size, int grec_type) { … } /* State Msg type New state Actions * EXCLUDE (X,Y) TO_IN (A) EXCLUDE (X+A,Y-A) (A)=GMI * Send Q(G,X-A) * Send Q(G) */ static bool __grp_src_toin_excl(struct net_bridge_mcast *brmctx, struct net_bridge_mcast_port *pmctx, struct net_bridge_port_group *pg, void *h_addr, void *srcs, u32 nsrcs, size_t addr_size, int grec_type) { … } static bool br_multicast_toin(struct net_bridge_mcast *brmctx, struct net_bridge_mcast_port *pmctx, struct net_bridge_port_group *pg, void *h_addr, void *srcs, u32 nsrcs, size_t addr_size, int grec_type) { … } /* State Msg type New state Actions * INCLUDE (A) TO_EX (B) EXCLUDE (A*B,B-A) (B-A)=0 * Delete (A-B) * Send Q(G,A*B) * Group Timer=GMI */ static void __grp_src_toex_incl(struct net_bridge_mcast *brmctx, struct net_bridge_mcast_port *pmctx, struct net_bridge_port_group *pg, void *h_addr, void *srcs, u32 nsrcs, size_t addr_size, int grec_type) { … } /* State Msg type New state Actions * EXCLUDE (X,Y) TO_EX (A) EXCLUDE (A-Y,Y*A) (A-X-Y)=Group Timer * Delete (X-A) * Delete (Y-A) * Send Q(G,A-Y) * Group Timer=GMI */ static bool __grp_src_toex_excl(struct net_bridge_mcast *brmctx, struct net_bridge_mcast_port *pmctx, struct net_bridge_port_group *pg, void *h_addr, void *srcs, u32 nsrcs, size_t addr_size, int grec_type) { … } static bool br_multicast_toex(struct net_bridge_mcast *brmctx, struct net_bridge_mcast_port *pmctx, struct net_bridge_port_group *pg, void *h_addr, void *srcs, u32 nsrcs, size_t addr_size, int grec_type) { … } /* State Msg type New state Actions * INCLUDE (A) BLOCK (B) INCLUDE (A) Send Q(G,A*B) */ static bool __grp_src_block_incl(struct net_bridge_mcast *brmctx, struct net_bridge_mcast_port *pmctx, struct net_bridge_port_group *pg, void *h_addr, void *srcs, u32 nsrcs, size_t addr_size, int grec_type) { … } /* State Msg type New state Actions * EXCLUDE (X,Y) BLOCK (A) EXCLUDE (X+(A-Y),Y) (A-X-Y)=Group Timer * Send Q(G,A-Y) */ static bool __grp_src_block_excl(struct net_bridge_mcast *brmctx, struct net_bridge_mcast_port *pmctx, struct net_bridge_port_group *pg, void *h_addr, void *srcs, u32 nsrcs, size_t addr_size, int grec_type) { … } static bool br_multicast_block(struct net_bridge_mcast *brmctx, struct net_bridge_mcast_port *pmctx, struct net_bridge_port_group *pg, void *h_addr, void *srcs, u32 nsrcs, size_t addr_size, int grec_type) { … } static struct net_bridge_port_group * br_multicast_find_port(struct net_bridge_mdb_entry *mp, struct net_bridge_port *p, const unsigned char *src) { … } static int br_ip4_multicast_igmp3_report(struct net_bridge_mcast *brmctx, struct net_bridge_mcast_port *pmctx, struct sk_buff *skb, u16 vid) { … } #if IS_ENABLED(CONFIG_IPV6) static int br_ip6_multicast_mld2_report(struct net_bridge_mcast *brmctx, struct net_bridge_mcast_port *pmctx, struct sk_buff *skb, u16 vid) { … } #endif static bool br_multicast_select_querier(struct net_bridge_mcast *brmctx, struct net_bridge_mcast_port *pmctx, struct br_ip *saddr) { … } static struct net_bridge_port * __br_multicast_get_querier_port(struct net_bridge *br, const struct bridge_mcast_querier *querier) { … } size_t br_multicast_querier_state_size(void) { … } /* protected by rtnl or rcu */ int br_multicast_dump_querier_state(struct sk_buff *skb, const struct net_bridge_mcast *brmctx, int nest_attr) { … } static void br_multicast_update_query_timer(struct net_bridge_mcast *brmctx, struct bridge_mcast_other_query *query, unsigned long max_delay) { … } static void br_port_mc_router_state_change(struct net_bridge_port *p, bool is_mc_router) { … } static struct net_bridge_port * br_multicast_rport_from_node(struct net_bridge_mcast *brmctx, struct hlist_head *mc_router_list, struct hlist_node *rlist) { … } static struct hlist_node * br_multicast_get_rport_slot(struct net_bridge_mcast *brmctx, struct net_bridge_port *port, struct hlist_head *mc_router_list) { … } static bool br_multicast_no_router_otherpf(struct net_bridge_mcast_port *pmctx, struct hlist_node *rnode) { … } /* Add port to router_list * list is maintained ordered by pointer value * and locked by br->multicast_lock and RCU */ static void br_multicast_add_router(struct net_bridge_mcast *brmctx, struct net_bridge_mcast_port *pmctx, struct hlist_node *rlist, struct hlist_head *mc_router_list) { … } /* Add port to router_list * list is maintained ordered by pointer value * and locked by br->multicast_lock and RCU */ static void br_ip4_multicast_add_router(struct net_bridge_mcast *brmctx, struct net_bridge_mcast_port *pmctx) { … } /* Add port to router_list * list is maintained ordered by pointer value * and locked by br->multicast_lock and RCU */ static void br_ip6_multicast_add_router(struct net_bridge_mcast *brmctx, struct net_bridge_mcast_port *pmctx) { … } static void br_multicast_mark_router(struct net_bridge_mcast *brmctx, struct net_bridge_mcast_port *pmctx, struct timer_list *timer, struct hlist_node *rlist, struct hlist_head *mc_router_list) { … } static void br_ip4_multicast_mark_router(struct net_bridge_mcast *brmctx, struct net_bridge_mcast_port *pmctx) { … } static void br_ip6_multicast_mark_router(struct net_bridge_mcast *brmctx, struct net_bridge_mcast_port *pmctx) { … } static void br_ip4_multicast_query_received(struct net_bridge_mcast *brmctx, struct net_bridge_mcast_port *pmctx, struct bridge_mcast_other_query *query, struct br_ip *saddr, unsigned long max_delay) { … } #if IS_ENABLED(CONFIG_IPV6) static void br_ip6_multicast_query_received(struct net_bridge_mcast *brmctx, struct net_bridge_mcast_port *pmctx, struct bridge_mcast_other_query *query, struct br_ip *saddr, unsigned long max_delay) { … } #endif static void br_ip4_multicast_query(struct net_bridge_mcast *brmctx, struct net_bridge_mcast_port *pmctx, struct sk_buff *skb, u16 vid) { … } #if IS_ENABLED(CONFIG_IPV6) static int br_ip6_multicast_query(struct net_bridge_mcast *brmctx, struct net_bridge_mcast_port *pmctx, struct sk_buff *skb, u16 vid) { … } #endif static void br_multicast_leave_group(struct net_bridge_mcast *brmctx, struct net_bridge_mcast_port *pmctx, struct br_ip *group, struct bridge_mcast_other_query *other_query, struct bridge_mcast_own_query *own_query, const unsigned char *src) { … } static void br_ip4_multicast_leave_group(struct net_bridge_mcast *brmctx, struct net_bridge_mcast_port *pmctx, __be32 group, __u16 vid, const unsigned char *src) { … } #if IS_ENABLED(CONFIG_IPV6) static void br_ip6_multicast_leave_group(struct net_bridge_mcast *brmctx, struct net_bridge_mcast_port *pmctx, const struct in6_addr *group, __u16 vid, const unsigned char *src) { … } #endif static void br_multicast_err_count(const struct net_bridge *br, const struct net_bridge_port *p, __be16 proto) { … } static void br_multicast_pim(struct net_bridge_mcast *brmctx, struct net_bridge_mcast_port *pmctx, const struct sk_buff *skb) { … } static int br_ip4_multicast_mrd_rcv(struct net_bridge_mcast *brmctx, struct net_bridge_mcast_port *pmctx, struct sk_buff *skb) { … } static int br_multicast_ipv4_rcv(struct net_bridge_mcast *brmctx, struct net_bridge_mcast_port *pmctx, struct sk_buff *skb, u16 vid) { … } #if IS_ENABLED(CONFIG_IPV6) static void br_ip6_multicast_mrd_rcv(struct net_bridge_mcast *brmctx, struct net_bridge_mcast_port *pmctx, struct sk_buff *skb) { … } static int br_multicast_ipv6_rcv(struct net_bridge_mcast *brmctx, struct net_bridge_mcast_port *pmctx, struct sk_buff *skb, u16 vid) { … } #endif 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) { … } static void br_multicast_query_expired(struct net_bridge_mcast *brmctx, struct bridge_mcast_own_query *query, struct bridge_mcast_querier *querier) { … } static void br_ip4_multicast_query_expired(struct timer_list *t) { … } #if IS_ENABLED(CONFIG_IPV6) static void br_ip6_multicast_query_expired(struct timer_list *t) { … } #endif static void br_multicast_gc_work(struct work_struct *work) { … } 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_init(struct net_bridge *br) { … } static void br_ip4_multicast_join_snoopers(struct net_bridge *br) { … } #if IS_ENABLED(CONFIG_IPV6) static void br_ip6_multicast_join_snoopers(struct net_bridge *br) { … } #else static inline void br_ip6_multicast_join_snoopers(struct net_bridge *br) { } #endif void br_multicast_join_snoopers(struct net_bridge *br) { … } static void br_ip4_multicast_leave_snoopers(struct net_bridge *br) { … } #if IS_ENABLED(CONFIG_IPV6) static void br_ip6_multicast_leave_snoopers(struct net_bridge *br) { … } #else static inline void br_ip6_multicast_leave_snoopers(struct net_bridge *br) { } #endif void br_multicast_leave_snoopers(struct net_bridge *br) { … } static void __br_multicast_open_query(struct net_bridge *br, struct bridge_mcast_own_query *query) { … } static void __br_multicast_open(struct net_bridge_mcast *brmctx) { … } void br_multicast_open(struct net_bridge *br) { … } static void __br_multicast_stop(struct net_bridge_mcast *brmctx) { … } void br_multicast_toggle_one_vlan(struct net_bridge_vlan *vlan, bool on) { … } static void br_multicast_toggle_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) { … } void br_multicast_stop(struct net_bridge *br) { … } void br_multicast_dev_del(struct net_bridge *br) { … } int br_multicast_set_router(struct net_bridge_mcast *brmctx, unsigned long val) { … } static void br_multicast_rport_del_notify(struct net_bridge_mcast_port *pmctx, bool deleted) { … } 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) { … } static void br_multicast_start_querier(struct net_bridge_mcast *brmctx, struct bridge_mcast_own_query *query) { … } int br_multicast_toggle(struct net_bridge *br, unsigned long val, struct netlink_ext_ack *extack) { … } bool br_multicast_enabled(const struct net_device *dev) { … } EXPORT_SYMBOL_GPL(…); bool br_multicast_router(const struct net_device *dev) { … } EXPORT_SYMBOL_GPL(…); int br_multicast_set_querier(struct net_bridge_mcast *brmctx, 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 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) { … } /** * br_multicast_list_adjacent - Returns snooped multicast addresses * @dev: The bridge port adjacent to which to retrieve addresses * @br_ip_list: The list to store found, snooped multicast IP addresses in * * Creates a list of IP addresses (struct br_ip_list) sensed by the multicast * snooping feature on all bridge ports of dev's bridge device, excluding * the addresses from dev itself. * * Returns the number of items added to br_ip_list. * * Notes: * - br_ip_list needs to be initialized by caller * - br_ip_list might contain duplicates in the end * (needs to be taken care of by caller) * - br_ip_list needs to be freed by caller */ int br_multicast_list_adjacent(struct net_device *dev, struct list_head *br_ip_list) { … } EXPORT_SYMBOL_GPL(…); /** * br_multicast_has_querier_anywhere - Checks for a querier on a bridge * @dev: The bridge port providing the bridge on which to check for a querier * @proto: The protocol family to check for: IGMP -> ETH_P_IP, MLD -> ETH_P_IPV6 * * Checks whether the given interface has a bridge on top and if so returns * true if a valid querier exists anywhere on the bridged link layer. * Otherwise returns false. */ bool br_multicast_has_querier_anywhere(struct net_device *dev, int proto) { … } EXPORT_SYMBOL_GPL(…); /** * br_multicast_has_querier_adjacent - Checks for a querier behind a bridge port * @dev: The bridge port adjacent to which to check for a querier * @proto: The protocol family to check for: IGMP -> ETH_P_IP, MLD -> ETH_P_IPV6 * * Checks whether the given interface has a bridge on top and if so returns * true if a selected querier is behind one of the other ports of this * bridge. Otherwise returns false. */ bool br_multicast_has_querier_adjacent(struct net_device *dev, int proto) { … } EXPORT_SYMBOL_GPL(…); /** * br_multicast_has_router_adjacent - Checks for a router behind a bridge port * @dev: The bridge port adjacent to which to check for a multicast router * @proto: The protocol family to check for: IGMP -> ETH_P_IP, MLD -> ETH_P_IPV6 * * Checks whether the given interface has a bridge on top and if so returns * true if a multicast router is behind one of the other ports of this * bridge. Otherwise returns false. */ bool br_multicast_has_router_adjacent(struct net_device *dev, int proto) { … } EXPORT_SYMBOL_GPL(…); static void br_mcast_stats_add(struct bridge_mcast_stats __percpu *stats, const struct sk_buff *skb, u8 type, u8 dir) { … } 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) { … } /* noinline for https://llvm.org/pr45802#c9 */ static noinline_for_stack void mcast_stats_add_dir(u64 *dst, u64 *src) { … } void br_multicast_get_stats(const struct net_bridge *br, const struct net_bridge_port *p, struct br_mcast_stats *dest) { … } int br_mdb_hash_init(struct net_bridge *br) { … } void br_mdb_hash_fini(struct net_bridge *br) { … }
Codebase Browser
linux