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| author |   Jiayuan Chen <jiayuan.chen@linux.dev> | 2025-04-09 19:26:05 +0800 |
|---|---|---|
| committer |   Jakub Kicinski <kuba@kernel.org> | 2025-04-10 18:29:26 -0700 |
| commit | c449d5f3a3d70b6223af8df2cadca3ca6eacb613 (patch) | |
| tree | 17c840dfae170b04d08de7c499e63d17b69d98f5 /net/ipv4/tcp_minisocks.c | |
| parent | tcp: add TCP_RFC7323_TW_PAWS drop reason (diff) | |
| download | wireguard-linux-c449d5f3a3d70b6223af8df2cadca3ca6eacb613.tar.xz wireguard-linux-c449d5f3a3d70b6223af8df2cadca3ca6eacb613.zip | |
tcp: add LINUX_MIB_PAWS_TW_REJECTED counter
When TCP is in TIME_WAIT state, PAWS verification uses
LINUX_PAWSESTABREJECTED, which is ambiguous and cannot be distinguished
from other PAWS verification processes.
We added a new counter, like the existing PAWS_OLD_ACK one.
Also we update the doc with previously missing PAWS_OLD_ACK.
usage:
'''
nstat -az | grep PAWSTimewait
TcpExtPAWSTimewait 1 0.0
'''
Suggested-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Jiayuan Chen <jiayuan.chen@linux.dev>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Link: https://patch.msgid.link/20250409112614.16153-3-jiayuan.chen@linux.dev
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'net/ipv4/tcp_minisocks.c')
| -rw-r--r-- | net/ipv4/tcp_minisocks.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/ipv4/tcp_minisocks.c b/net/ipv4/tcp_minisocks.c index 27511bf58c0f..43d7852ce07e 100644 --- a/net/ipv4/tcp_minisocks.c +++ b/net/ipv4/tcp_minisocks.c @@ -248,7 +248,7 @@ kill: if (paws_reject) { *drop_reason = SKB_DROP_REASON_TCP_RFC7323_TW_PAWS; - __NET_INC_STATS(twsk_net(tw), LINUX_MIB_PAWSESTABREJECTED); + __NET_INC_STATS(twsk_net(tw), LINUX_MIB_PAWS_TW_REJECTED); } if (!th->rst) { |