diff options
| author | Vijay Subramanian <subramanian.vijay@gmail.com> | 2013-01-31 08:24:19 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-02-04 13:06:27 -0500 |
| commit | 5f1e942cb45d06968b0ce94472d97014e0e1fdc9 (patch) | |
| tree | cc98d521570cd46d81d13fdfa252d9c647fc14e7 /net/ipv6/tcp_ipv6.c | |
| parent | 848bf15f361c7c22da7998c81d50ed3dffbc827d (diff) | |
| download | lwn-5f1e942cb45d06968b0ce94472d97014e0e1fdc9.tar.gz lwn-5f1e942cb45d06968b0ce94472d97014e0e1fdc9.zip | |
tcp: ipv6: Update MIB counters for drops
This patch updates LINUX_MIB_LISTENDROPS and LINUX_MIB_LISTENOVERFLOWS in
tcp_v6_conn_request() and tcp_v6_err(). tcp_v6_conn_request() in particular can
drop SYNs for various reasons which are not currently tracked.
Signed-off-by: Vijay Subramanian <subramanian.vijay@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6/tcp_ipv6.c')
| -rw-r--r-- | net/ipv6/tcp_ipv6.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c index 93825dd3a7c0..4f43537197ef 100644 --- a/net/ipv6/tcp_ipv6.c +++ b/net/ipv6/tcp_ipv6.c @@ -423,6 +423,7 @@ static void tcp_v6_err(struct sk_buff *skb, struct inet6_skb_parm *opt, } inet_csk_reqsk_queue_drop(sk, req, prev); + NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_LISTENDROPS); goto out; case TCP_SYN_SENT: @@ -958,8 +959,10 @@ static int tcp_v6_conn_request(struct sock *sk, struct sk_buff *skb) goto drop; } - if (sk_acceptq_is_full(sk) && inet_csk_reqsk_queue_young(sk) > 1) + if (sk_acceptq_is_full(sk) && inet_csk_reqsk_queue_young(sk) > 1) { + NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_LISTENOVERFLOWS); goto drop; + } req = inet6_reqsk_alloc(&tcp6_request_sock_ops); if (req == NULL) @@ -1108,6 +1111,7 @@ drop_and_release: drop_and_free: reqsk_free(req); drop: + NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_LISTENDROPS); return 0; /* don't send reset */ } |