diff options
| author | Eric Dumazet <edumazet@google.com> | 2013-01-19 16:10:37 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-01-20 17:22:05 -0500 |
| commit | b74aa930ef49a3c0d8e4c1987f89decac768fb2c (patch) | |
| tree | bebdff5c710c40928616f637ebc6ad45344a44e7 /net | |
| parent | 9a4c831ebbc1bf7cb41079e421a74bddd508f251 (diff) | |
| download | lwn-b74aa930ef49a3c0d8e4c1987f89decac768fb2c.tar.gz lwn-b74aa930ef49a3c0d8e4c1987f89decac768fb2c.zip | |
tcp: fix incorrect LOCKDROPPEDICMPS counter
commit 563d34d057 (tcp: dont drop MTU reduction indications)
added an error leading to incorrect accounting of
LINUX_MIB_LOCKDROPPEDICMPS
If socket is owned by the user, we want to increment
this SNMP counter, unless the message is a
(ICMP_DEST_UNREACH,ICMP_FRAG_NEEDED) one.
Reported-by: Maciej Żenczykowski <maze@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Neal Cardwell <ncardwell@google.com>
Signed-off-by: Maciej Żenczykowski <maze@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 | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c index 54139fa514e6..70b09ef2463b 100644 --- a/net/ipv4/tcp_ipv4.c +++ b/net/ipv4/tcp_ipv4.c @@ -369,11 +369,10 @@ void tcp_v4_err(struct sk_buff *icmp_skb, u32 info) * We do take care of PMTU discovery (RFC1191) special case : * we can receive locally generated ICMP messages while socket is held. */ - if (sock_owned_by_user(sk) && - type != ICMP_DEST_UNREACH && - code != ICMP_FRAG_NEEDED) - NET_INC_STATS_BH(net, LINUX_MIB_LOCKDROPPEDICMPS); - + if (sock_owned_by_user(sk)) { + if (!(type == ICMP_DEST_UNREACH && code == ICMP_FRAG_NEEDED)) + NET_INC_STATS_BH(net, LINUX_MIB_LOCKDROPPEDICMPS); + } if (sk->sk_state == TCP_CLOSE) goto out; |