diff options
| author | Kuniyuki Iwashima <kuniyu@amazon.co.jp> | 2021-06-23 08:35:29 +0900 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2021-06-23 12:56:08 -0700 |
| commit | 55d444b310c64b084dcc62ba3e4dc3862269fb96 (patch) | |
| tree | 48678971ce4b31dbfaf01d105104bebf37f7d7e7 /net/ipv4/proc.c | |
| parent | 7525de2516fba8661bdea409718708c711c5d5e1 (diff) | |
| download | linux-55d444b310c64b084dcc62ba3e4dc3862269fb96.tar.bz2 | |
tcp: Add stats for socket migration.
This commit adds two stats for the socket migration feature to evaluate the
effectiveness: LINUX_MIB_TCPMIGRATEREQ(SUCCESS|FAILURE).
If the migration fails because of the own_req race in receiving ACK and
sending SYN+ACK paths, we do not increment the failure stat. Then another
CPU is responsible for the req.
Link: https://lore.kernel.org/bpf/CAK6E8=cgFKuGecTzSCSQ8z3YJ_163C0uwO9yRvfDSE7vOe9mJA@mail.gmail.com/
Suggested-by: Yuchung Cheng <ycheng@google.com>
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.co.jp>
Acked-by: Yuchung Cheng <ycheng@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/proc.c')
| -rw-r--r-- | net/ipv4/proc.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/net/ipv4/proc.c b/net/ipv4/proc.c index 6d46297a99f8..b0d3a09dc84e 100644 --- a/net/ipv4/proc.c +++ b/net/ipv4/proc.c @@ -295,6 +295,8 @@ static const struct snmp_mib snmp4_net_list[] = { SNMP_MIB_ITEM("TcpDuplicateDataRehash", LINUX_MIB_TCPDUPLICATEDATAREHASH), SNMP_MIB_ITEM("TCPDSACKRecvSegs", LINUX_MIB_TCPDSACKRECVSEGS), SNMP_MIB_ITEM("TCPDSACKIgnoredDubious", LINUX_MIB_TCPDSACKIGNOREDDUBIOUS), + SNMP_MIB_ITEM("TCPMigrateReqSuccess", LINUX_MIB_TCPMIGRATEREQSUCCESS), + SNMP_MIB_ITEM("TCPMigrateReqFailure", LINUX_MIB_TCPMIGRATEREQFAILURE), SNMP_MIB_SENTINEL }; |