From: Patrick McHardy <kaber@trash.net>
To: davem@davemloft.net
Cc: netfilter-devel@lists.netfilter.org, Patrick McHardy <kaber@trash.net>
Subject: [NETFILTER 03/10]: tcp conntrack: accept SYN|URG as valid
Date: Sun, 4 Mar 2007 21:20:02 +0100 (MET) [thread overview]
Message-ID: <20070304201910.28582.42805.sendpatchset@localhost.localdomain> (raw)
In-Reply-To: <20070304201906.28582.51903.sendpatchset@localhost.localdomain>
[NETFILTER]: tcp conntrack: accept SYN|URG as valid
Some stacks apparently send packets with SYN|URG set. Linux accepts
these packets, so TCP conntrack should to.
Pointed out by Martijn Posthuma <posthuma@sangine.com>.
Signed-off-by: Patrick McHardy <kaber@trash.net>
---
commit efe99d89bb32f8ea7f76fdf9867d0df52e8ca0aa
tree 2fdf2aa01da7595f763432b3b03822a020239592
parent e6ebc414bb13540bba508e404af7aa6b3e65e6f3
author Patrick McHardy <kaber@trash.net> Thu, 01 Mar 2007 15:21:44 +0100
committer Patrick McHardy <kaber@trash.net> Thu, 01 Mar 2007 15:21:44 +0100
net/ipv4/netfilter/ip_conntrack_proto_tcp.c | 4 +++-
net/netfilter/nf_conntrack_proto_tcp.c | 4 +++-
2 files changed, 6 insertions(+), 2 deletions(-)
diff --git a/net/ipv4/netfilter/ip_conntrack_proto_tcp.c b/net/ipv4/netfilter/ip_conntrack_proto_tcp.c
index 170d625..0a72eab 100644
--- a/net/ipv4/netfilter/ip_conntrack_proto_tcp.c
+++ b/net/ipv4/netfilter/ip_conntrack_proto_tcp.c
@@ -812,8 +812,10 @@ #define TH_CWR 0x80
static const u8 tcp_valid_flags[(TH_FIN|TH_SYN|TH_RST|TH_PUSH|TH_ACK|TH_URG) + 1] =
{
[TH_SYN] = 1,
- [TH_SYN|TH_ACK] = 1,
[TH_SYN|TH_PUSH] = 1,
+ [TH_SYN|TH_URG] = 1,
+ [TH_SYN|TH_PUSH|TH_URG] = 1,
+ [TH_SYN|TH_ACK] = 1,
[TH_SYN|TH_ACK|TH_PUSH] = 1,
[TH_RST] = 1,
[TH_RST|TH_ACK] = 1,
diff --git a/net/netfilter/nf_conntrack_proto_tcp.c b/net/netfilter/nf_conntrack_proto_tcp.c
index 3b9ad7f..153d661 100644
--- a/net/netfilter/nf_conntrack_proto_tcp.c
+++ b/net/netfilter/nf_conntrack_proto_tcp.c
@@ -769,8 +769,10 @@ #define TH_CWR 0x80
static u8 tcp_valid_flags[(TH_FIN|TH_SYN|TH_RST|TH_PUSH|TH_ACK|TH_URG) + 1] =
{
[TH_SYN] = 1,
- [TH_SYN|TH_ACK] = 1,
[TH_SYN|TH_PUSH] = 1,
+ [TH_SYN|TH_URG] = 1,
+ [TH_SYN|TH_PUSH|TH_URG] = 1,
+ [TH_SYN|TH_ACK] = 1,
[TH_SYN|TH_ACK|TH_PUSH] = 1,
[TH_RST] = 1,
[TH_RST|TH_ACK] = 1,
next prev parent reply other threads:[~2007-03-04 20:20 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-03-04 20:19 [NETFILTER 00/10]: Netfilter fixes Patrick McHardy
2007-03-04 20:19 ` [NETFILTER 01/10]: conntrack: fix {nf, ip}_ct_iterate_cleanup endless loops Patrick McHardy
2007-03-04 20:20 ` [NETFILTER 02/10]: nf_conntrack/nf_nat: fix incorrect config ifdefs Patrick McHardy
2007-03-04 20:20 ` Patrick McHardy [this message]
2007-03-04 20:20 ` [NETFILTER 04/10]: nfnetlink_log: fix reference leak Patrick McHardy
2007-03-04 20:20 ` [NETFILTER 05/10]: nfnetlink_log: fix use after free Patrick McHardy
2007-03-04 20:20 ` [NETFILTER 06/10]: nfnetlink_log: fix NULL pointer dereference Patrick McHardy
2007-03-04 20:20 ` [NETFILTER 07/10]: nfnetlink_log: fix possible " Patrick McHardy
2007-03-04 20:20 ` [NETFILTER 08/10]: nfnetlink_log: fix module reference counting Patrick McHardy
2007-03-04 20:20 ` [NETFILTER 09/10]: nfnetlink_log: fix " Patrick McHardy
2007-03-04 20:20 ` [NETFILTER 10/10]: ip6_route_me_harder should take into account mark Patrick McHardy
2007-03-05 0:00 ` [NETFILTER 00/10]: Netfilter fixes David Miller
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