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| author | Mubashir Adnan Qureshi <mubashirq@google.com> | 2022-10-26 13:51:14 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2022-10-28 10:47:42 +0100 |
| commit | 29c1c44646aec5d5134f2365259a84becc1ee7d3 (patch) | |
| tree | eb2cc7ced4d5711d1a6c36441585198172ea8957 /include/uapi/linux/snmp.h | |
| parent | c30f8e0b048087ffbf20e51a4be160f7ec279ff6 (diff) | |
| download | lwn-29c1c44646aec5d5134f2365259a84becc1ee7d3.tar.gz lwn-29c1c44646aec5d5134f2365259a84becc1ee7d3.zip | |
tcp: add u32 counter in tcp_sock and an SNMP counter for PLB
A u32 counter is added to tcp_sock for counting the number of PLB
triggered rehashes for a TCP connection. An SNMP counter is also
added to count overall PLB triggered rehash events for a host. These
counters are hooked up to PLB implementation for DCTCP.
TCP_NLA_REHASH is added to SCM_TIMESTAMPING_OPT_STATS that reports
the rehash attempts triggered due to PLB or timeouts. This gives
a historical view of sustained congestion or timeouts experienced
by the TCP connection.
Signed-off-by: Mubashir Adnan Qureshi <mubashirq@google.com>
Signed-off-by: Yuchung Cheng <ycheng@google.com>
Signed-off-by: Neal Cardwell <ncardwell@google.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/uapi/linux/snmp.h')
| -rw-r--r-- | include/uapi/linux/snmp.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/uapi/linux/snmp.h b/include/uapi/linux/snmp.h index 4d7470036a8b..6600cb0164c2 100644 --- a/include/uapi/linux/snmp.h +++ b/include/uapi/linux/snmp.h @@ -292,6 +292,7 @@ enum LINUX_MIB_TCPDSACKIGNOREDDUBIOUS, /* TCPDSACKIgnoredDubious */ LINUX_MIB_TCPMIGRATEREQSUCCESS, /* TCPMigrateReqSuccess */ LINUX_MIB_TCPMIGRATEREQFAILURE, /* TCPMigrateReqFailure */ + LINUX_MIB_TCPPLBREHASH, /* TCPPLBRehash */ __LINUX_MIB_MAX }; |