From b533fb9cf4f7c6ca2aa255a5a1fdcde49fff2b24 Mon Sep 17 00:00:00 2001 From: Jason Xing Date: Thu, 25 Apr 2024 11:13:40 +0800 Subject: rstreason: make it work in trace world At last, we should let it work by introducing this reset reason in trace world. One of the possible expected outputs is: ... tcp_send_reset: skbaddr=xxx skaddr=xxx src=xxx dest=xxx state=TCP_ESTABLISHED reason=NOT_SPECIFIED Signed-off-by: Jason Xing Reviewed-by: Steven Rostedt (Google) Reviewed-by: Eric Dumazet Signed-off-by: Paolo Abeni --- include/trace/events/tcp.h | 26 ++++++++++++++++++++++---- 1 file changed, 22 insertions(+), 4 deletions(-) (limited to 'include') diff --git a/include/trace/events/tcp.h b/include/trace/events/tcp.h index 5c04a61a11c2..49b5ee091cf6 100644 --- a/include/trace/events/tcp.h +++ b/include/trace/events/tcp.h @@ -11,6 +11,7 @@ #include #include #include +#include /* * tcp event with arguments sk and skb @@ -74,20 +75,32 @@ DEFINE_EVENT(tcp_event_sk_skb, tcp_retransmit_skb, TP_ARGS(sk, skb) ); +#undef FN +#define FN(reason) TRACE_DEFINE_ENUM(SK_RST_REASON_##reason); +DEFINE_RST_REASON(FN, FN) + +#undef FN +#undef FNe +#define FN(reason) { SK_RST_REASON_##reason, #reason }, +#define FNe(reason) { SK_RST_REASON_##reason, #reason } + /* * skb of trace_tcp_send_reset is the skb that caused RST. In case of * active reset, skb should be NULL */ TRACE_EVENT(tcp_send_reset, - TP_PROTO(const struct sock *sk, const struct sk_buff *skb), + TP_PROTO(const struct sock *sk, + const struct sk_buff *skb, + const enum sk_rst_reason reason), - TP_ARGS(sk, skb), + TP_ARGS(sk, skb, reason), TP_STRUCT__entry( __field(const void *, skbaddr) __field(const void *, skaddr) __field(int, state) + __field(enum sk_rst_reason, reason) __array(__u8, saddr, sizeof(struct sockaddr_in6)) __array(__u8, daddr, sizeof(struct sockaddr_in6)) ), @@ -113,14 +126,19 @@ TRACE_EVENT(tcp_send_reset, */ TP_STORE_ADDR_PORTS_SKB(skb, th, entry->daddr, entry->saddr); } + __entry->reason = reason; ), - TP_printk("skbaddr=%p skaddr=%p src=%pISpc dest=%pISpc state=%s", + TP_printk("skbaddr=%p skaddr=%p src=%pISpc dest=%pISpc state=%s reason=%s", __entry->skbaddr, __entry->skaddr, __entry->saddr, __entry->daddr, - __entry->state ? show_tcp_state_name(__entry->state) : "UNKNOWN") + __entry->state ? show_tcp_state_name(__entry->state) : "UNKNOWN", + __print_symbolic(__entry->reason, DEFINE_RST_REASON(FN, FNe))) ); +#undef FN +#undef FNe + /* * tcp event with arguments sk * -- cgit v1.2.3