X-Git-Url: http://git.droids-corp.org/?a=blobdiff_plain;f=drivers%2Fnet%2Fifc%2Fifcvf_vdpa.c;h=8de9ef1999fba707e9ba2c7d02623f440937c6fe;hb=b06a398ba9ae7b0fb6f225591c86a7fd05b480d8;hp=9e729ff72332ee0ba95d8f974245ce527b6d3c2b;hpb=8fda27b181ff71c4deea9a2fa2c4a9ea93af2175;p=dpdk.git

diff --git a/drivers/net/ifc/ifcvf_vdpa.c b/drivers/net/ifc/ifcvf_vdpa.c
index 9e729ff723..8de9ef1999 100644
--- a/drivers/net/ifc/ifcvf_vdpa.c
+++ b/drivers/net/ifc/ifcvf_vdpa.c
@@ -81,6 +81,8 @@ static struct internal_list_head internal_list =
 
 static pthread_mutex_t internal_list_lock = PTHREAD_MUTEX_INITIALIZER;
 
+static void update_used_ring(struct ifcvf_internal *internal, uint16_t qid);
+
 static struct internal_list *
 find_internal_resource_by_did(int did)
 {
@@ -666,6 +668,10 @@ m_ifcvf_stop(struct ifcvf_internal *internal)
 	ifcvf_stop_hw(hw);
 
 	for (i = 0; i < hw->nr_vring; i++) {
+		/* synchronize remaining new used entries if any */
+		if ((i & 1) == 0)
+			update_used_ring(internal, i);
+
 		rte_vhost_get_vhost_vring(vid, i, &vq);
 		len = IFCVF_USED_RING_LEN(vq.size);
 		rte_vhost_log_used_vring(vid, i, 0, len);
@@ -735,6 +741,7 @@ vring_relay(void *arg)
 			DRV_LOG(ERR, "epoll add error: %s", strerror(errno));
 			return NULL;
 		}
+		update_used_ring(internal, qid);
 	}
 
 	/* start relay with a first kick */
@@ -1107,6 +1114,9 @@ ifcvf_pci_probe(struct rte_pci_driver *pci_drv __rte_unused,
 	if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 		return 0;
 
+	if (!pci_dev->device.devargs)
+		return 1;
+
 	kvlist = rte_kvargs_parse(pci_dev->device.devargs->args,
 			ifcvf_valid_arguments);
 	if (kvlist == NULL)