diff options
| -rw-r--r-- | net/bridge/br_multicast.c | 118 | ||||
| -rw-r--r-- | net/bridge/br_private.h | 13 |
2 files changed, 89 insertions, 42 deletions
diff --git a/net/bridge/br_multicast.c b/net/bridge/br_multicast.c index 0bf791ed0f56..b83f11228948 100644 --- a/net/bridge/br_multicast.c +++ b/net/bridge/br_multicast.c @@ -140,6 +140,29 @@ struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br, return br_mdb_ip_get_rcu(br, &ip); } +static void br_multicast_destroy_mdb_entry(struct net_bridge_mcast_gc *gc) +{ + struct net_bridge_mdb_entry *mp; + + mp = container_of(gc, struct net_bridge_mdb_entry, mcast_gc); + WARN_ON(!hlist_unhashed(&mp->mdb_node)); + WARN_ON(mp->ports); + + del_timer_sync(&mp->timer); + kfree_rcu(mp, rcu); +} + +static void br_multicast_del_mdb_entry(struct net_bridge_mdb_entry *mp) +{ + struct net_bridge *br = mp->br; + + rhashtable_remove_fast(&br->mdb_hash_tbl, &mp->rhnode, + br_mdb_rht_params); + hlist_del_init_rcu(&mp->mdb_node); + hlist_add_head(&mp->mcast_gc.gc_node, &br->mcast_gc_list); + queue_work(system_long_wq, &br->mcast_gc_work); +} + static void br_multicast_group_expired(struct timer_list *t) { struct net_bridge_mdb_entry *mp = from_timer(mp, t, timer); @@ -153,15 +176,20 @@ static void br_multicast_group_expired(struct timer_list *t) if (mp->ports) goto out; + br_multicast_del_mdb_entry(mp); +out: + spin_unlock(&br->multicast_lock); +} - rhashtable_remove_fast(&br->mdb_hash_tbl, &mp->rhnode, - br_mdb_rht_params); - hlist_del_rcu(&mp->mdb_node); +static void br_multicast_destroy_group_src(struct net_bridge_mcast_gc *gc) +{ + struct net_bridge_group_src *src; - kfree_rcu(mp, rcu); + src = container_of(gc, struct net_bridge_group_src, mcast_gc); + WARN_ON(!hlist_unhashed(&src->node)); -out: - spin_unlock(&br->multicast_lock); + del_timer_sync(&src->timer); + kfree_rcu(src, rcu); } static void br_multicast_del_group_src(struct net_bridge_group_src *src) @@ -170,8 +198,21 @@ static void br_multicast_del_group_src(struct net_bridge_group_src *src) hlist_del_init_rcu(&src->node); src->pg->src_ents--; - hlist_add_head(&src->del_node, &br->src_gc_list); - queue_work(system_long_wq, &br->src_gc_work); + hlist_add_head(&src->mcast_gc.gc_node, &br->mcast_gc_list); + queue_work(system_long_wq, &br->mcast_gc_work); +} + +static void br_multicast_destroy_port_group(struct net_bridge_mcast_gc *gc) +{ + struct net_bridge_port_group *pg; + + pg = container_of(gc, struct net_bridge_port_group, mcast_gc); + WARN_ON(!hlist_unhashed(&pg->mglist)); + WARN_ON(!hlist_empty(&pg->src_list)); + + del_timer_sync(&pg->rexmit_timer); + del_timer_sync(&pg->timer); + kfree_rcu(pg, rcu); } void br_multicast_del_pg(struct net_bridge_mdb_entry *mp, @@ -184,12 +225,11 @@ void br_multicast_del_pg(struct net_bridge_mdb_entry *mp, rcu_assign_pointer(*pp, pg->next); hlist_del_init(&pg->mglist); - del_timer(&pg->timer); - del_timer(&pg->rexmit_timer); hlist_for_each_entry_safe(ent, tmp, &pg->src_list, node) br_multicast_del_group_src(ent); br_mdb_notify(br->dev, mp, pg, RTM_DELMDB); - kfree_rcu(pg, rcu); + hlist_add_head(&pg->mcast_gc.gc_node, &br->mcast_gc_list); + queue_work(system_long_wq, &br->mcast_gc_work); if (!mp->ports && !mp->host_joined && netif_running(br->dev)) mod_timer(&mp->timer, jiffies); @@ -254,6 +294,17 @@ out: spin_unlock(&br->multicast_lock); } +static void br_multicast_gc(struct hlist_head *head) +{ + struct net_bridge_mcast_gc *gcent; + struct hlist_node *tmp; + + hlist_for_each_entry_safe(gcent, tmp, head, gc_node) { + hlist_del_init(&gcent->gc_node); + gcent->destroy(gcent); + } +} + static struct sk_buff *br_ip4_multicast_alloc_query(struct net_bridge *br, struct net_bridge_port_group *pg, __be32 ip_dst, __be32 group, @@ -622,6 +673,7 @@ struct net_bridge_mdb_entry *br_multicast_new_group(struct net_bridge *br, mp->br = br; mp->addr = *group; + mp->mcast_gc.destroy = br_multicast_destroy_mdb_entry; timer_setup(&mp->timer, br_multicast_group_expired, 0); err = rhashtable_lookup_insert_fast(&br->mdb_hash_tbl, &mp->rhnode, br_mdb_rht_params); @@ -710,6 +762,7 @@ br_multicast_new_group_src(struct net_bridge_port_group *pg, struct br_ip *src_i grp_src->pg = pg; grp_src->br = pg->port->br; grp_src->addr = *src_ip; + grp_src->mcast_gc.destroy = br_multicast_destroy_group_src; timer_setup(&grp_src->timer, br_multicast_group_src_expired, 0); hlist_add_head_rcu(&grp_src->node, &pg->src_list); @@ -736,6 +789,7 @@ struct net_bridge_port_group *br_multicast_new_port_group( p->port = port; p->flags = flags; p->filter_mode = filter_mode; + p->mcast_gc.destroy = br_multicast_destroy_port_group; INIT_HLIST_HEAD(&p->src_list); rcu_assign_pointer(p->next, next); timer_setup(&p->timer, br_multicast_port_group_expired, 0); @@ -1163,13 +1217,16 @@ void br_multicast_del_port(struct net_bridge_port *port) { struct net_bridge *br = port->br; struct net_bridge_port_group *pg; + HLIST_HEAD(deleted_head); struct hlist_node *n; /* Take care of the remaining groups, only perm ones should be left */ spin_lock_bh(&br->multicast_lock); hlist_for_each_entry_safe(pg, n, &port->mglist, mglist) br_multicast_find_del_pg(br, pg); + hlist_move_list(&br->mcast_gc_list, &deleted_head); spin_unlock_bh(&br->multicast_lock); + br_multicast_gc(&deleted_head); del_timer_sync(&port->multicast_router_timer); free_percpu(port->mcast_stats); } @@ -2733,29 +2790,17 @@ static void br_ip6_multicast_query_expired(struct timer_list *t) } #endif -static void __grp_src_gc(struct hlist_head *head) -{ - struct net_bridge_group_src *ent; - struct hlist_node *tmp; - - hlist_for_each_entry_safe(ent, tmp, head, del_node) { - hlist_del_init(&ent->del_node); - del_timer_sync(&ent->timer); - kfree_rcu(ent, rcu); - } -} - -static void br_multicast_src_gc(struct work_struct *work) +static void br_multicast_gc_work(struct work_struct *work) { struct net_bridge *br = container_of(work, struct net_bridge, - src_gc_work); + mcast_gc_work); HLIST_HEAD(deleted_head); spin_lock_bh(&br->multicast_lock); - hlist_move_list(&br->src_gc_list, &deleted_head); + hlist_move_list(&br->mcast_gc_list, &deleted_head); spin_unlock_bh(&br->multicast_lock); - __grp_src_gc(&deleted_head); + br_multicast_gc(&deleted_head); } void br_multicast_init(struct net_bridge *br) @@ -2798,8 +2843,8 @@ void br_multicast_init(struct net_bridge *br) br_ip6_multicast_query_expired, 0); #endif INIT_HLIST_HEAD(&br->mdb_list); - INIT_HLIST_HEAD(&br->src_gc_list); - INIT_WORK(&br->src_gc_work, br_multicast_src_gc); + INIT_HLIST_HEAD(&br->mcast_gc_list); + INIT_WORK(&br->mcast_gc_work, br_multicast_gc_work); } static void br_ip4_multicast_join_snoopers(struct net_bridge *br) @@ -2907,18 +2952,13 @@ void br_multicast_dev_del(struct net_bridge *br) struct hlist_node *tmp; spin_lock_bh(&br->multicast_lock); - hlist_for_each_entry_safe(mp, tmp, &br->mdb_list, mdb_node) { - del_timer(&mp->timer); - rhashtable_remove_fast(&br->mdb_hash_tbl, &mp->rhnode, - br_mdb_rht_params); - hlist_del_rcu(&mp->mdb_node); - kfree_rcu(mp, rcu); - } - hlist_move_list(&br->src_gc_list, &deleted_head); + hlist_for_each_entry_safe(mp, tmp, &br->mdb_list, mdb_node) + br_multicast_del_mdb_entry(mp); + hlist_move_list(&br->mcast_gc_list, &deleted_head); spin_unlock_bh(&br->multicast_lock); - __grp_src_gc(&deleted_head); - cancel_work_sync(&br->src_gc_work); + br_multicast_gc(&deleted_head); + cancel_work_sync(&br->mcast_gc_work); rcu_barrier(); } diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h index fb35a73fc559..a23d2bae56e1 100644 --- a/net/bridge/br_private.h +++ b/net/bridge/br_private.h @@ -219,6 +219,11 @@ struct net_bridge_fdb_entry { #define BR_SGRP_F_DELETE BIT(0) #define BR_SGRP_F_SEND BIT(1) +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; @@ -229,7 +234,7 @@ struct net_bridge_group_src { struct timer_list timer; struct net_bridge *br; - struct hlist_node del_node; + struct net_bridge_mcast_gc mcast_gc; struct rcu_head rcu; }; @@ -248,6 +253,7 @@ struct net_bridge_port_group { struct timer_list rexmit_timer; struct hlist_node mglist; + struct net_bridge_mcast_gc mcast_gc; struct rcu_head rcu; }; @@ -261,6 +267,7 @@ struct net_bridge_mdb_entry { struct timer_list timer; struct hlist_node mdb_node; + struct net_bridge_mcast_gc mcast_gc; struct rcu_head rcu; }; @@ -434,7 +441,7 @@ struct net_bridge { struct rhashtable mdb_hash_tbl; - struct hlist_head src_gc_list; + struct hlist_head mcast_gc_list; struct hlist_head mdb_list; struct hlist_head router_list; @@ -448,7 +455,7 @@ struct net_bridge { struct bridge_mcast_own_query ip6_own_query; struct bridge_mcast_querier ip6_querier; #endif /* IS_ENABLED(CONFIG_IPV6) */ - struct work_struct src_gc_work; + struct work_struct mcast_gc_work; #endif struct timer_list hello_timer; |