netfilter: xt_connlimit: fix accouning when receive RST packet in ESTABLISHED state Upstream commit d2ee3f2c4b1db1320c1efb4dcaceeaf6c7e6c2d3: In xt_connlimit match module, the counter of an IP is decreased when the TCP packet is go through the chain with ip_conntrack state TW. Well, it's very natural that the server and client close the socket with FIN packet. But when the client/server close the socket with RST packet(using so_linger), the counter for this connection still exsit. The following patch can fix it which is based on linux-2.6.25.4 Signed-off-by: Dong Wei <dwei.zh@xxxxxxxxx> Acked-by: Jan Engelhardt <jengelh@xxxxxxxxxx> Signed-off-by: Patrick McHardy <kaber@xxxxxxxxx> --- commit 8a39ae5d24374801df08b7aa634ca03080e6b72a tree 66e43bc28fbc61a0f8a39ca848dfe19d20eb930f parent d025d91021895314ce10cc0ab8e0f627dc1a12fa author Dong Wei <dwei.zh@xxxxxxxxx> Fri, 06 Jun 2008 19:07:37 +0200 committer Patrick McHardy <kaber@xxxxxxxxx> Fri, 06 Jun 2008 19:07:37 +0200 net/netfilter/xt_connlimit.c | 3 ++- 1 files changed, 2 insertions(+), 1 deletions(-) diff --git a/net/netfilter/xt_connlimit.c b/net/netfilter/xt_connlimit.c index 3b01119..1692338 100644 --- a/net/netfilter/xt_connlimit.c +++ b/net/netfilter/xt_connlimit.c @@ -75,7 +75,8 @@ static inline bool already_closed(const struct nf_conn *conn) u_int16_t proto = conn->tuplehash[0].tuple.dst.protonum; if (proto == IPPROTO_TCP) - return conn->proto.tcp.state == TCP_CONNTRACK_TIME_WAIT; + return conn->proto.tcp.state == TCP_CONNTRACK_TIME_WAIT || + conn->proto.tcp.state == TCP_CONNTRACK_CLOSE; else return 0; } -- To unsubscribe from this list: send the line "unsubscribe netfilter-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
