[Patch net-next 05/13] udp: introduce tracepoint trace_udp_v6_send_skb()
From: Cong Wang <hidden>
Date: 2021-08-05 18:58:06
Subsystem:
networking [general], the rest, tracing, user datagram protocol (udp) · Maintainers:
"David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds, Steven Rostedt, Masami Hiramatsu, Willem de Bruijn
From: Qitao Xu <redacted> Tracepoint trace_udp_v6_send_skb() is introduced to trace skb at the exit of UDPv6 layer on TX side. Reviewed-by: Cong Wang <redacted> Signed-off-by: Qitao Xu <redacted> --- include/trace/events/udp.h | 21 +++++++++++++++++++++ net/core/net-traces.c | 3 +++ net/ipv6/udp.c | 2 ++ 3 files changed, 26 insertions(+)
diff --git a/include/trace/events/udp.h b/include/trace/events/udp.h
index 7babc1a11693..6af4b402237a 100644
--- a/include/trace/events/udp.h
+++ b/include/trace/events/udp.h@@ -46,6 +46,27 @@ TRACE_EVENT(udp_send_skb, TP_printk("skaddr=%px, skbaddr=%px", __entry->skaddr, __entry->skbaddr) ); +#if IS_ENABLED(CONFIG_IPV6) +TRACE_EVENT(udp_v6_send_skb, + + TP_PROTO(const struct sock *sk, const struct sk_buff *skb), + + TP_ARGS(sk, skb), + + TP_STRUCT__entry( + __field(const void *, skaddr) + __field(const void *, skbaddr) + ), + + TP_fast_assign( + __entry->skaddr = sk; + __entry->skbaddr = skb; + ), + + TP_printk("skaddr=%px, skbaddr=%px", __entry->skaddr, __entry->skbaddr) +); +#endif + #endif /* _TRACE_UDP_H */ /* This part must be outside protection */
diff --git a/net/core/net-traces.c b/net/core/net-traces.c
index e1bd46076ad0..0aca299dfb55 100644
--- a/net/core/net-traces.c
+++ b/net/core/net-traces.c@@ -62,3 +62,6 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(napi_poll); EXPORT_TRACEPOINT_SYMBOL_GPL(tcp_send_reset); EXPORT_TRACEPOINT_SYMBOL_GPL(tcp_bad_csum); +#if IS_ENABLED(CONFIG_IPV6) +EXPORT_TRACEPOINT_SYMBOL_GPL(udp_v6_send_skb); +#endif
diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c
index c5e15e94bb00..84895ca40e5c 100644
--- a/net/ipv6/udp.c
+++ b/net/ipv6/udp.c@@ -52,6 +52,7 @@ #include <linux/proc_fs.h> #include <linux/seq_file.h> #include <trace/events/skb.h> +#include <trace/events/udp.h> #include "udp_impl.h" static u32 udp6_ehashfn(const struct net *net,
@@ -1255,6 +1256,7 @@ static int udp_v6_send_skb(struct sk_buff *skb, struct flowi6 *fl6, } else { UDP6_INC_STATS(sock_net(sk), UDP_MIB_OUTDATAGRAMS, is_udplite); + trace_udp_v6_send_skb(sk, skb); } return err; }
--
2.27.0