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tcp: MD5: Use MIB counter instead of warning for MD5 mismatch.

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From a report by Matti Aarnio, and preliminary patch by Adam Langley.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2008-07-30 03:03:15 -07:00
parent 8d50b53d66
commit 785957d3e8
4 changed files with 14 additions and 27 deletions
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10
net/ipv4/tcp_ipv4.c
View file

@ -1116,18 +1116,12 @@ static int tcp_v4_inbound_md5_hash(struct sock *sk, struct sk_buff *skb)
return 0;
if (hash_expected && !hash_location) {
LIMIT_NETDEBUG(KERN_INFO "MD5 Hash expected but NOT found "
"(" NIPQUAD_FMT ", %d)->(" NIPQUAD_FMT ", %d)\n",
NIPQUAD(iph->saddr), ntohs(th->source),
NIPQUAD(iph->daddr), ntohs(th->dest));
NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_TCPMD5NOTFOUND);
return 1;
}
if (!hash_expected && hash_location) {
LIMIT_NETDEBUG(KERN_INFO "MD5 Hash NOT expected but found "
"(" NIPQUAD_FMT ", %d)->(" NIPQUAD_FMT ", %d)\n",
NIPQUAD(iph->saddr), ntohs(th->source),
NIPQUAD(iph->daddr), ntohs(th->dest));
NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_TCPMD5UNEXPECTED);
return 1;
}