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| author | Balazs Scheidler <bazsi@balabit.hu> | 2010-10-21 12:45:14 +0200 |
|---|---|---|
| committer | Patrick McHardy <kaber@trash.net> | 2010-10-21 12:45:14 +0200 |
| commit | 106e4c26b1529e559d1aae777f11b4f8f7bafc26 (patch) | |
| tree | e784c61379e767255bf941f9d78d9ef6e7c58640 /include/net | |
| parent | d86bef73b4a24e59e7c1f896a72bbf38430ac2c6 (diff) | |
| download | op-kernel-dev-106e4c26b1529e559d1aae777f11b4f8f7bafc26.zip op-kernel-dev-106e4c26b1529e559d1aae777f11b4f8f7bafc26.tar.gz | |
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 <bazsi@balabit.hu>
Signed-off-by: KOVACS Krisztian <hidden@balabit.hu>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Diffstat (limited to 'include/net')
| -rw-r--r-- | include/net/netfilter/nf_tproxy_core.h | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/include/net/netfilter/nf_tproxy_core.h b/include/net/netfilter/nf_tproxy_core.h index 208b46f..b3a8942 100644 --- a/include/net/netfilter/nf_tproxy_core.h +++ b/include/net/netfilter/nf_tproxy_core.h @@ -8,12 +8,16 @@ #include <net/inet_sock.h> #include <net/tcp.h> +#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) |
