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| author | Eric Dumazet <edumazet@google.com> | 2013-07-19 20:07:16 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-07-19 22:12:42 -0700 |
| commit | 1faabf2aab1fdaa1ace4e8c829d1b9cf7bfec2f1 (patch) | |
| tree | c72272a0e485820f9d486012cd555f1a953bc977 /net/bridge | |
| parent | 651e92716aaae60fc41b9652f54cb6803896e0da (diff) | |
| download | linux-stable-1faabf2aab1fdaa1ace4e8c829d1b9cf7bfec2f1.tar.gz linux-stable-1faabf2aab1fdaa1ace4e8c829d1b9cf7bfec2f1.tar.bz2 linux-stable-1faabf2aab1fdaa1ace4e8c829d1b9cf7bfec2f1.zip | |
bridge: do not call setup_timer() multiple times
commit 9f00b2e7cf24 ("bridge: only expire the mdb entry when query is
received") added a nasty bug as an active timer can be reinitialized.
setup_timer() must be done once, no matter how many time mod_timer()
is called. br_multicast_new_group() is the right place to do this.
Reported-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Diagnosed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Tested-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Cc: Cong Wang <amwang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/bridge')
| -rw-r--r-- | net/bridge/br_multicast.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/net/bridge/br_multicast.c b/net/bridge/br_multicast.c index 69af490cce44..4b99c9a27044 100644 --- a/net/bridge/br_multicast.c +++ b/net/bridge/br_multicast.c @@ -619,6 +619,9 @@ rehash: mp->br = br; mp->addr = *group; + setup_timer(&mp->timer, br_multicast_group_expired, + (unsigned long)mp); + hlist_add_head_rcu(&mp->hlist[mdb->ver], &mdb->mhash[hash]); mdb->size++; @@ -1126,7 +1129,6 @@ static int br_ip4_multicast_query(struct net_bridge *br, if (!mp) goto out; - setup_timer(&mp->timer, br_multicast_group_expired, (unsigned long)mp); mod_timer(&mp->timer, now + br->multicast_membership_interval); mp->timer_armed = true; @@ -1204,7 +1206,6 @@ static int br_ip6_multicast_query(struct net_bridge *br, if (!mp) goto out; - setup_timer(&mp->timer, br_multicast_group_expired, (unsigned long)mp); mod_timer(&mp->timer, now + br->multicast_membership_interval); mp->timer_armed = true; |