hv_sock: disable SO_RCVLOWAT support

For Hyper-V it is quiet difficult to support this socket option,due to transport internals, so disable it. Signed-off-by: Arseniy Krasnov <[email protected]> Reviewed-by: Dexuan Cui <[email protected]> Reviewed-by: Stefano Garzarella <[email protected]> Signed-off-by: Paolo Abeni <[email protected]>
josf · Aug 23, 2022 · 24764f8 · 24764f8
1 parent e38f22c
commit 24764f8
Showing 1 changed file with 7 additions and 0 deletions.
diff --git a/net/vmw_vsock/hyperv_transport.c b/net/vmw_vsock/hyperv_transport.c
@@ -815,6 +815,12 @@ int hvs_notify_send_post_enqueue(struct vsock_sock *vsk, ssize_t written,
 	return 0;
 }
 
+static
+int hvs_set_rcvlowat(struct vsock_sock *vsk, int val)
+{
+	return -EOPNOTSUPP;
+}
+
 static struct vsock_transport hvs_transport = {
 	.module                   = THIS_MODULE,
 
@@ -850,6 +856,7 @@ static struct vsock_transport hvs_transport = {
 	.notify_send_pre_enqueue  = hvs_notify_send_pre_enqueue,
 	.notify_send_post_enqueue = hvs_notify_send_post_enqueue,
 
+	.set_rcvlowat             = hvs_set_rcvlowat
 };
 
 static bool hvs_check_transport(struct vsock_sock *vsk)