linux-kernel - [PATCH] udp6: add a missing call into udp_fail_queue_rcv

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Message-ID: <20230706172237.28341-1-ivan@cloudflare.com>
Date:   Thu,  6 Jul 2023 10:22:36 -0700
From:   Ivan Babrou <ivan@...udflare.com>
To:     netdev@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org, kernel-team@...udflare.com,
        Ivan Babrou <ivan@...udflare.com>,
        Willem de Bruijn <willemdebruijn.kernel@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        David Ahern <dsahern@...nel.org>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Neil Horman <nhorman@...driver.com>,
        Satoru Moriya <satoru.moriya@....com>
Subject: [PATCH] udp6: add a missing call into udp_fail_queue_rcv_skb tracepoint

The tracepoint has existed for 12 years, but it only covered udp
over the legacy IPv4 protocol. Having it enabled for udp6 removes
the unnecessary difference in error visibility.

Signed-off-by: Ivan Babrou <ivan@...udflare.com>
Fixes: 296f7ea75b45 ("udp: add tracepoints for queueing skb to rcvbuf")
---
 net/ipv6/udp.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c
index e5a337e6b970..debb98fb23c0 100644
--- a/net/ipv6/udp.c
+++ b/net/ipv6/udp.c
@@ -45,6 +45,7 @@
 #include <net/tcp_states.h>
 #include <net/ip6_checksum.h>
 #include <net/ip6_tunnel.h>
+#include <trace/events/udp.h>
 #include <net/xfrm.h>
 #include <net/inet_hashtables.h>
 #include <net/inet6_hashtables.h>
@@ -680,6 +681,7 @@ static int __udpv6_queue_rcv_skb(struct sock *sk, struct sk_buff *skb)
 		}
 		UDP6_INC_STATS(sock_net(sk), UDP_MIB_INERRORS, is_udplite);
 		kfree_skb_reason(skb, drop_reason);
+		trace_udp_fail_queue_rcv_skb(rc, sk);
 		return -1;
 	}
 
-- 
2.41.0