From: Eric Dumazet <eric.dumazet@gmail.com>
To: "David S . Miller" <davem@davemloft.net>,
Jakub Kicinski <kuba@kernel.org>
Cc: netdev <netdev@vger.kernel.org>,
Eric Dumazet <edumazet@google.com>,
Eric Dumazet <eric.dumazet@gmail.com>
Subject: [PATCH net-next] tcp: avoid indirect call in tcp_new_space()
Date: Wed, 21 Jul 2021 02:06:14 -0700 [thread overview]
Message-ID: <20210721090614.68297-1-eric.dumazet@gmail.com> (raw)
From: Eric Dumazet <edumazet@google.com>
For tcp sockets, sk->sk_write_space is most probably sk_stream_write_space().
Other sk->sk_write_space() calls in TCP are slow path and do not deserve
any change.
Signed-off-by: Eric Dumazet <edumazet@google.com>
---
net/ipv4/tcp_input.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c
index 149ceb5c94ffcd4499d3054fae31bd296a9e0bcd..bef2c8b64d83a0f3d4cca90f9b12912bf3d00807 100644
--- a/net/ipv4/tcp_input.c
+++ b/net/ipv4/tcp_input.c
@@ -5383,7 +5383,7 @@ static void tcp_new_space(struct sock *sk)
tp->snd_cwnd_stamp = tcp_jiffies32;
}
- sk->sk_write_space(sk);
+ INDIRECT_CALL_1(sk->sk_write_space, sk_stream_write_space, sk);
}
static void tcp_check_space(struct sock *sk)
--
2.32.0.402.g57bb445576-goog
next reply other threads:[~2021-07-21 9:20 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-21 9:06 Eric Dumazet [this message]
2021-07-21 16:10 ` [PATCH net-next] tcp: avoid indirect call in tcp_new_space() patchwork-bot+netdevbpf
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