net/vdev_netvsc: remove specified devices IP check

If the netvsc driver starts in blacklist mode, it does not
automatically probe IP associated netvsc devices. Therefore, the only
way to probe them is to specify them by the EAL command line, using the
"force" parameter to skip the IP check in the driver.

>From now on, the user does not need to add the "force" parameter if he
specifies an IP associated netvsc device by the EAL command line, and the
responsibility of the IP check is now in the user's hands.

However, in the absence of any specification, the driver still skips IP
associated netvsc devices.

Cc: stable@dpdk.org

Signed-off-by: Matan Azrad <matan@mellanox.com>

doc/guides/nics/vdev_netvsc.rst

@@ -89,12 +89,16 @@ The following device parameters are supported:
 - ``force`` [int]
 
   If nonzero, forces the use of specified interfaces even if not detected as
-  NetVSC or detected as routed NETVSC.
+  NetVSC.
 
 - ``ignore`` [int]
 
   If nonzero, ignores the driver runnig (actually used to disable the
   auto-detection in Hyper-V VM).
 
-Not specifying either ``iface`` or ``mac`` makes this driver attach itself to
-all unrouted NetVSC interfaces found on the system.
+.. note::
+
+   Not specifying either ``iface`` or ``mac`` makes this driver attach itself to
+   all unrouted NetVSC interfaces found on the system.
+   Specifying the device makes this driver attach itself to the device
+   regardless the device routes.

drivers/net/vdev_netvsc/vdev_netvsc.c

@@ -569,7 +569,7 @@ vdev_netvsc_netvsc_probe(const struct if_nameindex *iface,
 	/* Routed NetVSC should not be probed. */
 	if (vdev_netvsc_has_route(iface, AF_INET) ||
 	    vdev_netvsc_has_route(iface, AF_INET6)) {
-		if (!specified || !force)
+		if (!specified)
 			return 0;
 		DRV_LOG(WARNING, "probably using routed NetVSC interface \"%s\""
 			" (index %u)", iface->if_name, iface->if_index);