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Diffstat (limited to 'net')
-rw-r--r--net/bridge/br_mdb.c6
-rw-r--r--net/bridge/br_multicast.c2
-rw-r--r--net/bridge/br_private.h1
3 files changed, 5 insertions, 4 deletions
diff --git a/net/bridge/br_mdb.c b/net/bridge/br_mdb.c
index edc0d731f6b2..ccc43a9bff80 100644
--- a/net/bridge/br_mdb.c
+++ b/net/bridge/br_mdb.c
@@ -117,10 +117,8 @@ static int br_mdb_dump(struct sk_buff *skb, struct netlink_callback *cb)
rcu_read_lock();
- /* TODO: in case of rehashing, we need to check
- * consistency for dumping.
- */
- cb->seq = net->dev_base_seq;
+ /* In theory this could be wrapped to 0... */
+ cb->seq = net->dev_base_seq + br_mdb_rehash_seq;
for_each_netdev_rcu(net, dev) {
if (dev->priv_flags & IFF_EBRIDGE) {
diff --git a/net/bridge/br_multicast.c b/net/bridge/br_multicast.c
index 68e375ac93bd..847b98a1d5e0 100644
--- a/net/bridge/br_multicast.c
+++ b/net/bridge/br_multicast.c
@@ -37,6 +37,7 @@
rcu_dereference_protected(X, lockdep_is_held(&br->multicast_lock))
static void br_multicast_start_querier(struct net_bridge *br);
+unsigned int br_mdb_rehash_seq;
#if IS_ENABLED(CONFIG_IPV6)
static inline int ipv6_is_transient_multicast(const struct in6_addr *addr)
@@ -338,6 +339,7 @@ static int br_mdb_rehash(struct net_bridge_mdb_htable __rcu **mdbp, int max,
return err;
}
+ br_mdb_rehash_seq++;
call_rcu_bh(&mdb->rcu, br_mdb_free);
out:
diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h
index ae0a6ec0a702..f95b766c7a98 100644
--- a/net/bridge/br_private.h
+++ b/net/bridge/br_private.h
@@ -411,6 +411,7 @@ extern int br_ioctl_deviceless_stub(struct net *net, unsigned int cmd, void __us
/* br_multicast.c */
#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
+extern unsigned int br_mdb_rehash_seq;
extern int br_multicast_rcv(struct net_bridge *br,
struct net_bridge_port *port,
struct sk_buff *skb);