[PATCH net-next 03/20] tcp: small optimization in tcp_v6_send_check()
From: Eric Dumazet <hidden>
Date: 2021-11-16 00:28:22
Subsystem:
networking [general], networking [tcp], the rest · Maintainers:
"David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Neal Cardwell, Linus Torvalds
From: Eric Dumazet <edumazet@google.com> For TCP flows, inet6_sk(sk)->saddr has the same value than sk->sk_v6_rcv_saddr. Using sk->sk_v6_rcv_saddr increases data locality. Signed-off-by: Eric Dumazet <edumazet@google.com> --- net/ipv6/tcp_ipv6.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c
index 551fce49841d7f53a111b0435855634cece2b40a..1f1a89f096de9f77ab1bd2d871eb90a3f12e91e0 100644
--- a/net/ipv6/tcp_ipv6.c
+++ b/net/ipv6/tcp_ipv6.c@@ -1893,9 +1893,7 @@ static struct timewait_sock_ops tcp6_timewait_sock_ops = { INDIRECT_CALLABLE_SCOPE void tcp_v6_send_check(struct sock *sk, struct sk_buff *skb) { - struct ipv6_pinfo *np = inet6_sk(sk); - - __tcp_v6_send_check(skb, &np->saddr, &sk->sk_v6_daddr); + __tcp_v6_send_check(skb, &sk->sk_v6_rcv_saddr, &sk->sk_v6_daddr); } const struct inet_connection_sock_af_ops ipv6_specific = {
--
2.34.0.rc1.387.gb447b232ab-goog