From 106e4c26b1529e559d1aae777f11b4f8f7bafc26 Mon Sep 17 00:00:00 2001 From: Balazs Scheidler Date: Thu, 21 Oct 2010 12:45:14 +0200 Subject: tproxy: kick out TIME_WAIT sockets in case a new connection comes in with the same tuple Without tproxy redirections an incoming SYN kicks out conflicting TIME_WAIT sockets, in order to handle clients that reuse ports within the TIME_WAIT period. The same mechanism didn't work in case TProxy is involved in finding the proper socket, as the time_wait processing code looked up the listening socket assuming that the listener addr/port matches those of the established connection. This is not the case with TProxy as the listener addr/port is possibly changed with the tproxy rule. Signed-off-by: Balazs Scheidler Signed-off-by: KOVACS Krisztian Signed-off-by: Patrick McHardy --- include/net/netfilter/nf_tproxy_core.h | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) (limited to 'include/net') diff --git a/include/net/netfilter/nf_tproxy_core.h b/include/net/netfilter/nf_tproxy_core.h index 208b46f4d6d2..b3a8942a4e6a 100644 --- a/include/net/netfilter/nf_tproxy_core.h +++ b/include/net/netfilter/nf_tproxy_core.h @@ -8,12 +8,16 @@ #include #include +#define NFT_LOOKUP_ANY 0 +#define NFT_LOOKUP_LISTENER 1 +#define NFT_LOOKUP_ESTABLISHED 2 + /* look up and get a reference to a matching socket */ extern struct sock * nf_tproxy_get_sock_v4(struct net *net, const u8 protocol, const __be32 saddr, const __be32 daddr, const __be16 sport, const __be16 dport, - const struct net_device *in, bool listening); + const struct net_device *in, int lookup_type); static inline void nf_tproxy_put_sock(struct sock *sk) -- cgit v1.2.3