net/iavf: fix queue pairs configuration

[ upstream commit 403aebc ]

Check if there are enough queue pairs currently allocated, and if not,
request PF to allocate them.

Fixes: e436cd4 ("net/iavf: negotiate large VF and request more queues")

Signed-off-by: Alvin Zhang <alvinx.zhang@intel.com>
Tested-by: Zhimin Huang <zhiminx.huang@intel.com>
Acked-by: Qi Zhang <qi.z.zhang@intel.com>

drivers/net/iavf/iavf_ethdev.c

@@ -372,8 +372,10 @@ iavf_dev_configure(struct rte_eth_dev *dev)
 	} else {
 		/* Check if large VF is already enabled. If so, disable and
 		 * release redundant queue resource.
+		 * Or check if enough queue pairs. If not, request them from PF.
 		 */
-		if (vf->lv_enabled) {
+		if (vf->lv_enabled ||
+		    num_queue_pairs > vf->vsi_res->num_queue_pairs) {
 			ret = iavf_queues_req_reset(dev, num_queue_pairs);
 			if (ret)
 				return ret;