From: Arseniy Krasnov Date: Tue, 10 Oct 2023 19:15:16 +0000 (+0300) Subject: vsock: enable SOCK_SUPPORT_ZC bit X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=dcc55d7bb23016e7ae335c8558e1937d7a551b35;p=linux.git vsock: enable SOCK_SUPPORT_ZC bit This bit is used by io_uring in case of zerocopy tx mode. io_uring code checks, that socket has this feature. This patch sets it in two places: 1) For socket in 'connect()' call. 2) For new socket which is returned by 'accept()' call. Signed-off-by: Arseniy Krasnov Reviewed-by: Stefano Garzarella Signed-off-by: David S. Miller --- diff --git a/net/vmw_vsock/af_vsock.c b/net/vmw_vsock/af_vsock.c index 71108b1f0dfcc..37b1c04329416 100644 --- a/net/vmw_vsock/af_vsock.c +++ b/net/vmw_vsock/af_vsock.c @@ -1406,6 +1406,9 @@ static int vsock_connect(struct socket *sock, struct sockaddr *addr, goto out; } + if (vsock_msgzerocopy_allow(transport)) + set_bit(SOCK_SUPPORT_ZC, &sk->sk_socket->flags); + err = vsock_auto_bind(vsk); if (err) goto out; @@ -1560,6 +1563,9 @@ static int vsock_accept(struct socket *sock, struct socket *newsock, int flags, } else { newsock->state = SS_CONNECTED; sock_graft(connected, newsock); + if (vsock_msgzerocopy_allow(vconnected->transport)) + set_bit(SOCK_SUPPORT_ZC, + &connected->sk_socket->flags); } release_sock(connected);