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| author |   Menglong Dong <imagedong@tencent.com> | 2022-01-09 14:36:27 +0800 |
|---|---|---|
| committer |   Jakub Kicinski <kuba@kernel.org> | 2022-01-09 16:30:34 -0800 |
| commit | 85125597419aec3aa7b8f3b8713e415f997796f2 (patch) | |
| tree | 10a76ff72bf482d9e89e41fcf4d12ca5f0194d36 /include/trace | |
| parent | net: skb: introduce kfree_skb_reason() (diff) | |
| download | linux-dev-85125597419aec3aa7b8f3b8713e415f997796f2.tar.xz linux-dev-85125597419aec3aa7b8f3b8713e415f997796f2.zip | |
net: skb: use kfree_skb_reason() in tcp_v4_rcv()
Replace kfree_skb() with kfree_skb_reason() in tcp_v4_rcv(). Following
drop reasons are added:
SKB_DROP_REASON_NO_SOCKET
SKB_DROP_REASON_PKT_TOO_SMALL
SKB_DROP_REASON_TCP_CSUM
SKB_DROP_REASON_TCP_FILTER
After this patch, 'kfree_skb' event will print message like this:
$ TASK-PID CPU# ||||| TIMESTAMP FUNCTION
$ | | | ||||| | |
<idle>-0 [000] ..s1. 36.113438: kfree_skb: skbaddr=(____ptrval____) protocol=2048 location=(____ptrval____) reason: NO_SOCKET
The reason of skb drop is printed too.
Signed-off-by: Menglong Dong <imagedong@tencent.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'include/trace')
| -rw-r--r-- | include/trace/events/skb.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/trace/events/skb.h b/include/trace/events/skb.h index 294c61bbe44b..faa7d068a7bc 100644 --- a/include/trace/events/skb.h +++ b/include/trace/events/skb.h @@ -11,6 +11,10 @@ #define TRACE_SKB_DROP_REASON \ EM(SKB_DROP_REASON_NOT_SPECIFIED, NOT_SPECIFIED) \ + EM(SKB_DROP_REASON_NO_SOCKET, NO_SOCKET) \ + EM(SKB_DROP_REASON_PKT_TOO_SMALL, PKT_TOO_SMALL) \ + EM(SKB_DROP_REASON_TCP_CSUM, TCP_CSUM) \ + EM(SKB_DROP_REASON_TCP_FILTER, TCP_FILTER) \ EMe(SKB_DROP_REASON_MAX, MAX) #undef EM |