diff options
| author | Eric Dumazet <edumazet@google.com> | 2016-08-24 17:50:24 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-08-26 01:43:11 +0200 |
| commit | e65c332de8a0c9f570847ec490b60effffcd5320 (patch) | |
| tree | d0e4808dc464c2ac1b3914c8a49ee95a1b11e1ff /net | |
| parent | vmxnet3: fix non static symbol warning (diff) | |
| download | linux-e65c332de8a0c9f570847ec490b60effffcd5320.tar.xz linux-e65c332de8a0c9f570847ec490b60effffcd5320.zip | |
tcp: md5: increment sk_drops on syn_recv state
TCP MD5 mismatches do increment sk_drops counter in all states but
SYN_RECV.
This is very unlikely to happen in the real world, but worth adding
to help diagnostics.
We increase the parent (listener) sk_drops.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Acked-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
| -rw-r--r-- | net/ipv4/tcp_ipv4.c | 1 | ||||
| -rw-r--r-- | net/ipv6/tcp_ipv6.c | 1 |
2 files changed, 2 insertions, 0 deletions
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c index 32b048e524d6..436d978c6c39 100644 --- a/net/ipv4/tcp_ipv4.c +++ b/net/ipv4/tcp_ipv4.c @@ -1602,6 +1602,7 @@ process: sk = req->rsk_listener; if (unlikely(tcp_v4_inbound_md5_hash(sk, skb))) { + sk_drops_add(sk, skb); reqsk_put(req); goto discard_it; } diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c index e0f46439e391..ac0ed7bda406 100644 --- a/net/ipv6/tcp_ipv6.c +++ b/net/ipv6/tcp_ipv6.c @@ -1409,6 +1409,7 @@ process: sk = req->rsk_listener; tcp_v6_fill_cb(skb, hdr, th); if (tcp_v6_inbound_md5_hash(sk, skb)) { + sk_drops_add(sk, skb); reqsk_put(req); goto discard_it; } |