From 0558e1674598ec9029c1d3bceb787c8340272b51 Mon Sep 17 00:00:00 2001 From: Paolo Abeni Date: Tue, 18 Jul 2023 16:38:09 +0200 Subject: [PATCH] udp: use indirect call wrapper for data ready() 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 Reviewed-by: Willem de Bruijn Link: https://lore.kernel.org/r/d47d53e6f8ee7a11228ca2f025d6243cc04b77f3.1689691004.git.pabeni@redhat.com Signed-off-by: Jakub Kicinski --- 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 42a96b3..8c3ebd9 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; -- 2.7.4