diff options
| author | Vlad Drukker <vlad@storewiz.com> | 2005-11-12 20:13:14 (GMT) |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2005-11-12 20:13:14 (GMT) |
| commit | a2d7222f0f5861ce13b9308c30bd18f28ebeb583 (patch) | |
| tree | 09d4dafe35b9cd4de344c4a8a63ef7d922466c2a /net | |
| parent | efacfbcb6c88677809f44a574fbcd9824835dccb (diff) | |
| download | linux-a2d7222f0f5861ce13b9308c30bd18f28ebeb583.tar.xz | |
[NETFILTER] {ip,nf}_conntrack TCP: Accept SYN+PUSH like SYN
Some devices (e.g. Qlogic iSCSI HBA hardware like QLA4010 up to firmware
3.0.0.4) initiates TCP with SYN and PUSH flags set.
The Linux TCP/IP stack deals fine with that, but the connection tracking
code doesn't.
This patch alters TCP connection tracking to accept SYN+PUSH as a valid
flag combination.
Signed-off-by: Vlad Drukker <vlad@storewiz.com>
Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
| -rw-r--r-- | net/ipv4/netfilter/ip_conntrack_proto_tcp.c | 1 | ||||
| -rw-r--r-- | net/netfilter/nf_conntrack_proto_tcp.c | 1 |
2 files changed, 2 insertions, 0 deletions
diff --git a/net/ipv4/netfilter/ip_conntrack_proto_tcp.c b/net/ipv4/netfilter/ip_conntrack_proto_tcp.c index 468c600..5b3f522 100644 --- a/net/ipv4/netfilter/ip_conntrack_proto_tcp.c +++ b/net/ipv4/netfilter/ip_conntrack_proto_tcp.c @@ -814,6 +814,7 @@ 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_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 83d90dd..156680d 100644 --- a/net/netfilter/nf_conntrack_proto_tcp.c +++ b/net/netfilter/nf_conntrack_proto_tcp.c @@ -779,6 +779,7 @@ 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_ACK|TH_PUSH] = 1, [TH_RST] = 1, [TH_RST|TH_ACK] = 1, |