Stefano Garzarella
2023-Jul-06 16:55 UTC
[RFC PATCH v5 09/17] vsock: enable SOCK_SUPPORT_ZC bit
On Sat, Jul 01, 2023 at 09:39:39AM +0300, Arseniy Krasnov wrote:>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 at sberdevices.ru> >--- > net/vmw_vsock/af_vsock.c | 6 ++++++ > 1 file changed, 6 insertions(+)Reviewed-by: Stefano Garzarella <sgarzare at redhat.com>> >diff --git a/net/vmw_vsock/af_vsock.c b/net/vmw_vsock/af_vsock.c >index 033006e1b5ad..da22ae0ef477 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); >-- >2.25.1 >