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| author | Pavel Begunkov <asml.silence@gmail.com> | 2022-10-21 12:16:39 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2022-10-22 16:42:58 +0200 |
| commit | e993ffe3da4bcddea0536b03be1031bf35cd8d85 (patch) | |
| tree | 4a2f29d5750b51820a53e95fd0995dc7cd342463 /net/ipv4/tcp.c | |
| parent | io-wq: Fix memory leak in worker creation (diff) | |
| download | linux-e993ffe3da4bcddea0536b03be1031bf35cd8d85.tar.xz linux-e993ffe3da4bcddea0536b03be1031bf35cd8d85.zip | |
net: flag sockets supporting msghdr originated zerocopy
We need an efficient way in io_uring to check whether a socket supports
zerocopy with msghdr provided ubuf_info. Add a new flag into the struct
socket flags fields.
Cc: <stable@vger.kernel.org> # 6.0
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Acked-by: Jakub Kicinski <kuba@kernel.org>
Link: https://lore.kernel.org/r/3dafafab822b1c66308bb58a0ac738b1e3f53f74.1666346426.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'net/ipv4/tcp.c')
| -rw-r--r-- | net/ipv4/tcp.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c index f8232811a5be..ef14efa1fb70 100644 --- a/net/ipv4/tcp.c +++ b/net/ipv4/tcp.c @@ -457,6 +457,7 @@ void tcp_init_sock(struct sock *sk) WRITE_ONCE(sk->sk_sndbuf, READ_ONCE(sock_net(sk)->ipv4.sysctl_tcp_wmem[1])); WRITE_ONCE(sk->sk_rcvbuf, READ_ONCE(sock_net(sk)->ipv4.sysctl_tcp_rmem[1])); + set_bit(SOCK_SUPPORT_ZC, &sk->sk_socket->flags); sk_sockets_allocated_inc(sk); } EXPORT_SYMBOL(tcp_init_sock); |