vhost: show vhost-user <interface> may crash [VPP-1242]
show vhost-user <interface> may cause a crash if interface is semi-bogus.
Semi-bogus means it is a known vpp interface which has a hw_if_index, but
it is bogus because it is not a vhost-user interface.
The fix is to add a check to reject non vhost-user interface for the
command.
Change-Id: I63f1e8bfbf46f5ec4c30f9fb3546982b63cd7cc5
Signed-off-by: Steven <sluong@cisco.com>
diff --git a/src/vnet/devices/virtio/vhost-user.c b/src/vnet/devices/virtio/vhost-user.c
index 5460f10..c1fca44 100644
--- a/src/vnet/devices/virtio/vhost-user.c
+++ b/src/vnet/devices/virtio/vhost-user.c
@@ -3253,6 +3253,13 @@
if (unformat
(input, "%U", unformat_vnet_hw_interface, vnm, &hw_if_index))
{
+ hi = vnet_get_hw_interface (vnm, hw_if_index);
+ if (vhost_user_dev_class.index != hi->dev_class_index)
+ {
+ error = clib_error_return (0, "unknown input `%U'",
+ format_unformat_error, input);
+ goto done;
+ }
vec_add1 (hw_if_indices, hw_if_index);
}
else if (unformat (input, "descriptors") || unformat (input, "desc"))