[Patch net-next 06/13] ipv4: introduce tracepoint trace_ip_rcv()
From: Cong Wang <hidden>
Date: 2021-08-05 18:58:07
Subsystem:
networking [general], networking [ipv4/ipv6], the rest, tracing · Maintainers:
"David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, David Ahern, Ido Schimmel, Linus Torvalds, Steven Rostedt, Masami Hiramatsu
From: Qitao Xu <redacted> Tracepoint trace_ip_rcv() is introduced to trace skb at the entrance of IP layer on RX side. Reviewed-by: Cong Wang <redacted> Signed-off-by: Qitao Xu <redacted> --- include/trace/events/ip.h | 16 ++++++++++++++++ net/ipv4/ip_input.c | 2 ++ 2 files changed, 18 insertions(+)
diff --git a/include/trace/events/ip.h b/include/trace/events/ip.h
index 553ae7276732..20ee1a81405c 100644
--- a/include/trace/events/ip.h
+++ b/include/trace/events/ip.h@@ -83,6 +83,22 @@ TRACE_EVENT(ip_queue_xmit, __entry->saddr_v6, __entry->daddr_v6, __entry->skbaddr) ); +TRACE_EVENT(ip_rcv, + TP_PROTO(const struct sk_buff *skb), + + TP_ARGS(skb), + + TP_STRUCT__entry( + __field(const void *, skbaddr) + ), + + TP_fast_assign( + __entry->skbaddr = skb; + ), + + TP_printk("skbaddr=%px", __entry->skbaddr) +); + #endif /* _TRACE_IP_H */ /* This part must be outside protection */
diff --git a/net/ipv4/ip_input.c b/net/ipv4/ip_input.c
index 3a025c011971..2eb7a0cbc0d3 100644
--- a/net/ipv4/ip_input.c
+++ b/net/ipv4/ip_input.c@@ -141,6 +141,7 @@ #include <linux/mroute.h> #include <linux/netlink.h> #include <net/dst_metadata.h> +#include <trace/events/ip.h> /* * Process Router Attention IP option (RFC 2113)
@@ -400,6 +401,7 @@ static int ip_rcv_finish_core(struct net *net, struct sock *sk, goto drop; } + trace_ip_rcv(skb); return NET_RX_SUCCESS; drop:
--
2.27.0