From 0558e1674598ec9029c1d3bceb787c8340272b51 Mon Sep 17 00:00:00 2001
From: Paolo Abeni <pabeni@redhat.com>
Date: Tue, 18 Jul 2023 16:38:09 +0200
Subject: [PATCH] udp: use indirect call wrapper for data ready()
Git-commit: 0558e1674598ec9029c1d3bceb787c8340272b51
Patch-mainline: v6.6-rc1
References: bsc#1220419
In most cases UDP sockets use the default data ready callback.
Leverage the indirect call wrapper for such callback to avoid an
indirect call in fastpath.
The above gives small but measurable performance gain under UDP flood.
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Link: https://lore.kernel.org/r/d47d53e6f8ee7a11228ca2f025d6243cc04b77f3.1689691004.git.pabeni@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Jiri Wiesner <jwiesner@suse.de>
---
net/ipv4/udp.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index 42a96b3547c9..8c3ebd95f5b9 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -1553,7 +1553,7 @@ int __udp_enqueue_schedule_skb(struct sock *sk, struct sk_buff *skb)
spin_unlock(&list->lock);
if (!sock_flag(sk, SOCK_DEAD))
- sk->sk_data_ready(sk);
+ INDIRECT_CALL_1(sk->sk_data_ready, sock_def_readable, sk);
busylock_release(busy);
return 0;
--
2.35.3