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authorWei Yongjun <yjwei@cn.fujitsu.com>2008-07-26 11:59:10 +0100
committerGerrit Renker <gerrit@erg.abdn.ac.uk>2008-07-26 11:59:10 +0100
commitd68f0866f76e2bc4ddc07e88e2cb1bc8959a6d7e (patch)
tree2cab08fd8de1c81c6d5a545a5b2aa96743cb6862 /net/dccp/ipv4.c
parentdccp: Bug-Fix - AWL was never updated (diff)
downloadlinux-dev-d68f0866f76e2bc4ddc07e88e2cb1bc8959a6d7e.tar.xz
linux-dev-d68f0866f76e2bc4ddc07e88e2cb1bc8959a6d7e.zip
dccp: Fix sequence number check for ICMPv4 packets
The payload of ICMP message is a part of the packet sent by ourself, so the sequence number check must use AWL and AWH, not SWL and SWH. For example: Endpoint A Endpoint B DATA-ACK --------> (SEQ=X) <-------- ICMP (Fragmentation Needed) (SEQ=X) Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com> Acked-by: Gerrit Renker <gerrit@erg.abdn.ac.uk>
Diffstat (limited to 'net/dccp/ipv4.c')
-rw-r--r--net/dccp/ipv4.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/net/dccp/ipv4.c b/net/dccp/ipv4.c
index a835b88237cb..6a2f1879e183 100644
--- a/net/dccp/ipv4.c
+++ b/net/dccp/ipv4.c
@@ -238,7 +238,7 @@ static void dccp_v4_err(struct sk_buff *skb, u32 info)
dp = dccp_sk(sk);
seq = dccp_hdr_seq(dh);
if ((1 << sk->sk_state) & ~(DCCPF_REQUESTING | DCCPF_LISTEN) &&
- !between48(seq, dp->dccps_swl, dp->dccps_swh)) {
+ !between48(seq, dp->dccps_awl, dp->dccps_awh)) {
NET_INC_STATS_BH(net, LINUX_MIB_OUTOFWINDOWICMPS);
goto out;
}