diff options
| 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 /include/net | |
| parent | 04271411121a58d37f47b065bc872f333274bf1f (diff) | |
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 'include/net')
| -rw-r--r-- | include/net/dropreason-core.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/net/dropreason-core.h b/include/net/dropreason-core.h index 9701d7f936f6..bea77934a235 100644 --- a/include/net/dropreason-core.h +++ b/include/net/dropreason-core.h @@ -287,6 +287,7 @@ enum skb_drop_reason { /** * @SKB_DROP_REASON_TCP_RFC7323_TW_PAWS: PAWS check, socket is in * TIME_WAIT state. + * Corresponds to LINUX_MIB_PAWS_TW_REJECTED. */ SKB_DROP_REASON_TCP_RFC7323_TW_PAWS, /** |