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| author | Eric Dumazet <edumazet@google.com> | 2021-12-01 04:32:46 +0100 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2021-12-02 04:06:09 +0100 |
| commit | ce8299b6f76f28326fedce2b4da90888bd97eab2 (patch) | |
| tree | ee9c848444134a92a77dfab024e3c7b6c14183e2 /net/ipv4/proc.c | |
| parent | net: mvneta: program 1ms autonegotiation clock divisor (diff) | |
| download | linux-ce8299b6f76f28326fedce2b4da90888bd97eab2.tar.xz linux-ce8299b6f76f28326fedce2b4da90888bd97eab2.zip | |
Revert "net: snmp: add statistics for tcp small queue check"
This reverts commit aeeecb889165617a841e939117f9a8095d0e7d80.
The new SNMP variable (TCPSmallQueueFailure) can be incremented
for good reasons, even on a 100Gbit single TCP_STREAM flow.
If we really wanted to ease driver debugging [1], this would
require something more sophisticated.
[1] Usually, if a driver is delaying TX completions too much,
this can lead to stalls in TCP output. Various work arounds
have been used in the past, like skb_orphan() in ndo_start_xmit().
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Menglong Dong <imagedong@tencent.com>
Link: https://lore.kernel.org/r/20211201033246.2826224-1-eric.dumazet@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'net/ipv4/proc.c')
| -rw-r--r-- | net/ipv4/proc.c | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/net/ipv4/proc.c b/net/ipv4/proc.c index 43b7a77cd6b4..f30273afb539 100644 --- a/net/ipv4/proc.c +++ b/net/ipv4/proc.c @@ -297,7 +297,6 @@ static const struct snmp_mib snmp4_net_list[] = { SNMP_MIB_ITEM("TCPDSACKIgnoredDubious", LINUX_MIB_TCPDSACKIGNOREDDUBIOUS), SNMP_MIB_ITEM("TCPMigrateReqSuccess", LINUX_MIB_TCPMIGRATEREQSUCCESS), SNMP_MIB_ITEM("TCPMigrateReqFailure", LINUX_MIB_TCPMIGRATEREQFAILURE), - SNMP_MIB_ITEM("TCPSmallQueueFailure", LINUX_MIB_TCPSMALLQUEUEFAILURE), SNMP_MIB_SENTINEL }; |