[PATCH net-next 1/3] tcp: mark tcp_process_tlp_ack() as unlikely
From: Eric Dumazet <edumazet@google.com>
Date: 2026-01-27 03:21:50
Subsystem:
networking [general], networking [tcp], the rest · Maintainers:
"David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Neal Cardwell, Linus Torvalds
It is unlikely we have to call tcp_process_tlp_ack(). Signed-off-by: Eric Dumazet <edumazet@google.com> --- net/ipv4/tcp_input.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c
index 9e91ddbc6253..f2fafba95705 100644
--- a/net/ipv4/tcp_input.c
+++ b/net/ipv4/tcp_input.c@@ -4283,7 +4283,7 @@ static int tcp_ack(struct sock *sk, const struct sk_buff *skb, int flag) tcp_in_ack_event(sk, flag); - if (tp->tlp_high_seq) + if (unlikely(tp->tlp_high_seq)) tcp_process_tlp_ack(sk, ack, flag); if (tcp_ack_is_dubious(sk, flag)) {
@@ -4333,7 +4333,7 @@ static int tcp_ack(struct sock *sk, const struct sk_buff *skb, int flag) */ tcp_ack_probe(sk); - if (tp->tlp_high_seq) + if (unlikely(tp->tlp_high_seq)) tcp_process_tlp_ack(sk, ack, flag); return 1;
--
2.53.0.rc1.217.geba53bf80e-goog