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authorMenglong Dong <imagedong@tencent.com>2022-01-09 14:36:27 +0800
committerJakub Kicinski <kuba@kernel.org>2022-01-09 16:30:34 -0800
commit85125597419aec3aa7b8f3b8713e415f997796f2 (patch)
tree10a76ff72bf482d9e89e41fcf4d12ca5f0194d36 /include/trace
parentc504e5c2f9648a1e5c2be01e8c3f59d394192bd3 (diff)
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.h4
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