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vsock: enable SOCK_SUPPORT_ZC bit

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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 <avkrasnov@salutedevices.com>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Arseniy Krasnov 2023-10-10 22:15:16 +03:00 committed by David S. Miller
parent 5fbfc7d243
commit dcc55d7bb2
1 changed files with 6 additions and 0 deletions
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6
net/vmw_vsock/af_vsock.c
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@ -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);