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(parent: 7e55052) | patch
tcp: add SNMP counter for zero-window drops
authorYafang Shao <laoar.shao@gmail.com>
Sun, 24 Jun 2018 14:02:54 +0000 (10:02 -0400)
committerDavid S. Miller <davem@davemloft.net>
Tue, 26 Jun 2018 02:49:08 +0000 (11:49 +0900)
commitfb223502ec0889444965f602f57b1f45f9e9845e
tree08a4895a31a307722691a1f6abdb1e44c658decetree | snapshot
parent7e55052783fd3a9202e9f7c4c480629a7270645fcommit | diff
tcp: add SNMP counter for zero-window drops

It will be helpful if we could display the drops due to zero window or no
enough window space.
So a new SNMP MIB entry is added to track this behavior.
This entry is named LINUX_MIB_TCPZEROWINDOWDROP and published in
/proc/net/netstat in TcpExt line as TCPZeroWindowDrop.

Signed-off-by: Yafang Shao <laoar.shao@gmail.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
include/uapi/linux/snmp.h diff | blob | history
net/ipv4/proc.c diff | blob | history
net/ipv4/tcp_input.c diff | blob | history
Domain: System / Kernel;