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authorArseniy Krasnov <avkrasnov@salutedevices.com>2023-10-10 22:15:16 +0300
committerDavid S. Miller <davem@davemloft.net>2023-10-15 13:19:42 +0100
commitdcc55d7bb23016e7ae335c8558e1937d7a551b35 (patch)
tree0a0ab4a42daffea10367a824b0f40f3a2a118205
parent5fbfc7d243343917793ae95a6011f03b5aac4735 (diff)
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 <avkrasnov@salutedevices.com> Reviewed-by: Stefano Garzarella <sgarzare@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--net/vmw_vsock/af_vsock.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/net/vmw_vsock/af_vsock.c b/net/vmw_vsock/af_vsock.c
index 71108b1f0dfc..37b1c0432941 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);