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| author | Patrick McHardy <kaber@trash.net> | 2007-02-12 11:13:58 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2007-02-12 11:13:58 -0800 |
| commit | 6b48a7d08d1bb2e3932bce1662fe411304acc18f (patch) | |
| tree | f0405cee3ff4fb3898a2a691e25cd77c31e392d8 /net/ipv4/netfilter/ip_conntrack_core.c | |
| parent | c0e912d7ed8999f87fa7f084928aac1266e251f3 (diff) | |
| download | linux-6b48a7d08d1bb2e3932bce1662fe411304acc18f.tar.gz | |
[NETFILTER]: ip_conntrack: properly use RCU for ip_conntrack_destroyed callback
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/netfilter/ip_conntrack_core.c')
| -rw-r--r-- | net/ipv4/netfilter/ip_conntrack_core.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/net/ipv4/netfilter/ip_conntrack_core.c b/net/ipv4/netfilter/ip_conntrack_core.c index a7e34d007ab01e..07ba1dd136b5b2 100644 --- a/net/ipv4/netfilter/ip_conntrack_core.c +++ b/net/ipv4/netfilter/ip_conntrack_core.c @@ -303,6 +303,7 @@ destroy_conntrack(struct nf_conntrack *nfct) struct ip_conntrack *ct = (struct ip_conntrack *)nfct; struct ip_conntrack_protocol *proto; struct ip_conntrack_helper *helper; + typeof(ip_conntrack_destroyed) destroyed; DEBUGP("destroy_conntrack(%p)\n", ct); IP_NF_ASSERT(atomic_read(&nfct->use) == 0); @@ -322,10 +323,12 @@ destroy_conntrack(struct nf_conntrack *nfct) proto = __ip_conntrack_proto_find(ct->tuplehash[IP_CT_DIR_REPLY].tuple.dst.protonum); if (proto && proto->destroy) proto->destroy(ct); - rcu_read_unlock(); - if (ip_conntrack_destroyed) - ip_conntrack_destroyed(ct); + destroyed = rcu_dereference(ip_conntrack_destroyed); + if (destroyed) + destroyed(ct); + + rcu_read_unlock(); write_lock_bh(&ip_conntrack_lock); /* Expectations will have been removed in clean_from_lists, |