From 55d444b310c64b084dcc62ba3e4dc3862269fb96 Mon Sep 17 00:00:00 2001 From: Kuniyuki Iwashima Date: Wed, 23 Jun 2021 08:35:29 +0900 Subject: 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 Signed-off-by: Kuniyuki Iwashima Acked-by: Yuchung Cheng Signed-off-by: David S. Miller --- include/uapi/linux/snmp.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/uapi/linux') diff --git a/include/uapi/linux/snmp.h b/include/uapi/linux/snmp.h index 26fc60ce9298..904909d020e2 100644 --- a/include/uapi/linux/snmp.h +++ b/include/uapi/linux/snmp.h @@ -290,6 +290,8 @@ enum LINUX_MIB_TCPDUPLICATEDATAREHASH, /* TCPDuplicateDataRehash */ LINUX_MIB_TCPDSACKRECVSEGS, /* TCPDSACKRecvSegs */ LINUX_MIB_TCPDSACKIGNOREDDUBIOUS, /* TCPDSACKIgnoredDubious */ + LINUX_MIB_TCPMIGRATEREQSUCCESS, /* TCPMigrateReqSuccess */ + LINUX_MIB_TCPMIGRATEREQFAILURE, /* TCPMigrateReqFailure */ __LINUX_MIB_MAX }; -- cgit v1.2.3-59-g8ed1b