diff options
| author | Wei Yongjun <yjwei@cn.fujitsu.com> | 2008-07-26 10:59:10 (GMT) |
|---|---|---|
| committer | Gerrit Renker <gerrit@erg.abdn.ac.uk> | 2008-07-26 10:59:10 (GMT) |
| commit | d68f0866f76e2bc4ddc07e88e2cb1bc8959a6d7e (patch) | |
| tree | 2cab08fd8de1c81c6d5a545a5b2aa96743cb6862 /net | |
| parent | 73f18fdbca3f92b90aeaee16f5175fe30496e218 (diff) | |
| download | linux-d68f0866f76e2bc4ddc07e88e2cb1bc8959a6d7e.tar.xz | |
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')
| -rw-r--r-- | net/dccp/ipv4.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/dccp/ipv4.c b/net/dccp/ipv4.c index a835b88..6a2f187 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; } |