From: Pavel Begunkov <[email protected]>
To: [email protected], [email protected],
[email protected], [email protected], [email protected],
[email protected], [email protected]
Cc: Pavel Begunkov <[email protected]>
Subject: [PATCH net-next 1/2] net/tcp: don't peek at tail for io_uring zc
Date: Mon, 15 May 2023 17:06:36 +0100 [thread overview]
Message-ID: <d49262a8a39c995cd55f89d1f6fd39cd4346f528.1684166247.git.asml.silence@gmail.com> (raw)
In-Reply-To: <[email protected]>
Move tcp_write_queue_tail() to SOCK_ZEROCOPY specific flag as zerocopy
setup for msghdr->ubuf_info doesn't need to peek into the last request.
Signed-off-by: Pavel Begunkov <[email protected]>
---
net/ipv4/tcp.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index 4d6392c16b7a..40f591f7fce1 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -1229,13 +1229,12 @@ int tcp_sendmsg_locked(struct sock *sk, struct msghdr *msg, size_t size)
flags = msg->msg_flags;
if ((flags & MSG_ZEROCOPY) && size) {
- skb = tcp_write_queue_tail(sk);
-
if (msg->msg_ubuf) {
uarg = msg->msg_ubuf;
net_zcopy_get(uarg);
zc = sk->sk_route_caps & NETIF_F_SG;
} else if (sock_flag(sk, SOCK_ZEROCOPY)) {
+ skb = tcp_write_queue_tail(sk);
uarg = msg_zerocopy_realloc(sk, size, skb_zcopy(skb));
if (!uarg) {
err = -ENOBUFS;
--
2.40.0
next prev parent reply other threads:[~2023-05-15 16:08 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-05-15 16:06 [PATCH net-next 0/2] minor tcp io_uring zc optimisations Pavel Begunkov
2023-05-15 16:06 ` Pavel Begunkov [this message]
2023-05-15 17:27 ` [PATCH net-next 1/2] net/tcp: don't peek at tail for io_uring zc David Ahern
2023-05-15 18:11 ` Eric Dumazet
2023-05-15 16:06 ` [PATCH net-next 2/2] net/tcp: optimise io_uring zc ubuf refcounting Pavel Begunkov
2023-05-15 17:29 ` David Ahern
2023-05-15 18:14 ` Eric Dumazet
2023-05-15 18:40 ` David Ahern
2023-05-16 12:59 ` Pavel Begunkov
2023-05-16 14:37 ` David Ahern
2023-05-16 17:46 ` Pavel Begunkov
2023-05-17 7:40 ` [PATCH net-next 0/2] minor tcp io_uring zc optimisations patchwork-bot+netdevbpf
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