From mboxrd@z Thu Jan 1 00:00:00 1970 From: Wei Yongjun Date: Fri, 25 Jul 2008 02:35:58 +0000 Subject: [PATCHv2 1/4] DCCP: Fix to check the sequence number in ICMP message Message-Id: <48893C0E.7020904@cn.fujitsu.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: dccp@vger.kernel.org The payload of ICMP message is a part of the packet which send by ourself, so check the sequence number must used 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 --- 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 f966729..8fd4d57 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; }