diff options
| author | Eric Dumazet <eric.dumazet@gmail.com> | 2010-03-19 05:37:18 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-03-21 18:31:35 -0700 |
| commit | 907cdda5205b012eec7513f66713749b293188c9 (patch) | |
| tree | 0488e7282c2d3748d90f8ceca78a183f905c4167 /net/ipv4/tcp_cubic.c | |
| parent | 32a806c194ea112cfab00f558482dd97bee5e44e (diff) | |
tcp: Add SNMP counter for DEFER_ACCEPT
Its currently hard to diagnose when ACK frames are dropped because an
application set TCP_DEFER_ACCEPT on its listening socket.
See http://bugzilla.kernel.org/show_bug.cgi?id=15507
This patch adds a SNMP value, named TCPDeferAcceptDrop
netstat -s | grep TCPDeferAcceptDrop
TCPDeferAcceptDrop: 0
This counter is incremented every time we drop a pure ACK frame received
by a socket in SYN_RECV state because its SYNACK retrans count is lower
than defer_accept value.
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/tcp_cubic.c')
0 files changed, 0 insertions, 0 deletions