Commit dcc55d7b authored by Arseniy Krasnov's avatar Arseniy Krasnov Committed by David S. Miller
Browse files

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: default avatarArseniy Krasnov <avkrasnov@salutedevices.com>
Reviewed-by: default avatarStefano Garzarella <sgarzare@redhat.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 5fbfc7d2

net/vmw_vsock/af_vsock.c

+6 −0
Original line number Diff line number Diff line
@@ -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);