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 <yjwei@xxxxxxxxxxxxxx>
---
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;
}
--
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