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authorEric Dumazet <edumazet@google.com>2020-06-19 22:12:35 +0300
committerDavid S. Miller <davem@davemloft.net>2020-06-21 03:47:53 +0300
commitdd2e0b86fc4ee146ac8f3275833d0187efeb950a (patch)
tree6c91f581ec5db35d4d77554be9d293b2ae57a776 /net/ipv6/tcp_ipv6.c
parent05e22e8395058745bd0312bc488b522197852aff (diff)
downloadlinux-dd2e0b86fc4ee146ac8f3275833d0187efeb950a.tar.xz
tcp: remove indirect calls for icsk->icsk_af_ops->send_check
Mitigate RETPOLINE costs in __tcp_transmit_skb() by using INDIRECT_CALL_INET() wrapper. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6/tcp_ipv6.c')
-rw-r--r--net/ipv6/tcp_ipv6.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c
index f67d45ff00b4..4502db706f75 100644
--- a/net/ipv6/tcp_ipv6.c
+++ b/net/ipv6/tcp_ipv6.c
@@ -1811,6 +1811,13 @@ static struct timewait_sock_ops tcp6_timewait_sock_ops = {
.twsk_destructor = tcp_twsk_destructor,
};
+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);
+}
+
const struct inet_connection_sock_af_ops ipv6_specific = {
.queue_xmit = inet6_csk_xmit,
.send_check = tcp_v6_send_check,