Dongli Zhang 736f16de75 net: tap: track dropped skb via kfree_skb_reason() ... The TAP can be used as vhost-net backend. E.g., the tap_handle_frame() is the interface to forward the skb from TAP to vhost-net/virtio-net. However, there are many "goto drop" in the TAP driver. Therefore, the kfree_skb_reason() is involved at each "goto drop" to help userspace ftrace/ebpf to track the reason for the loss of packets. The below reasons are introduced: - SKB_DROP_REASON_SKB_CSUM - SKB_DROP_REASON_SKB_GSO_SEG - SKB_DROP_REASON_SKB_UCOPY_FAULT - SKB_DROP_REASON_DEV_HDR - SKB_DROP_REASON_FULL_RING Cc: Joao Martins <joao.m.martins@oracle.com> Cc: Joe Jin <joe.jin@oracle.com> Signed-off-by: Dongli Zhang <dongli.zhang@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2022-03-06 11:04:01 +00:00
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events	net: tap: track dropped skb via kfree_skb_reason()	2022-03-06 11:04:01 +00:00
bpf_probe.h	tracing: Add '__rel_loc' using trace event macros	2021-12-06 15:37:21 -05:00
define_trace.h	tracepoint: Optimize using static_call()	2020-09-01 09:58:06 +02:00
perf.h	tracing/perf: Avoid -Warray-bounds warning for __rel_loc macro	2022-01-27 19:15:45 -05:00
syscall.h	tracepoints: Migrate to use SYSCALL_WORK flag	2020-11-16 21:53:15 +01:00
trace_events.h	tracing/perf: Avoid -Warray-bounds warning for __rel_loc macro	2022-01-27 19:15:45 -05:00