dpdk: fix format device name using wrong index

When I setup vpp by netvsc driver, occurs the following crash:

(format_dpdk_device_name) assertion `(i) < vec_len (dm->devices)' fails

vnet[100166]: #6  0x00007f434d651f6a _clib_error + 0x2da
vnet[100166]: #7  0x00007f430b4bef64 format_dpdk_device_name + 0xf4
vnet[100166]: #8  0x00007f434d6555f3 do_percent + 0xee3
vnet[100166]: #9  0x00007f434d654359 va_format + 0xb9
vnet[100166]: #10 0x00007f434d7ac16e vlib_log + 0x3ce
vnet[100166]: #11 0x00007f430b49ebe3 dpdk_device_start + 0x193
vnet[100166]: #12 0x00007f430b4aa233 dpdk_interface_admin_up_down + 0x163
vnet[100166]: #13 0x00007f434d988fc8 vnet_sw_interface_set_flags_helper + 0x378
vnet[100166]: #14 0x00007f434d989338 vnet_sw_interface_set_flags + 0x48

This patch fix it by device_index as a index for devices vec, and not
dpdk port_id.

Type: fix
Change-Id: I84c46616d06117c9ae3b2c7d0473050f1b8ded5f
Signed-off-by: Daniel Ding <danieldin95@163.com>

src/plugins/dpdk/device/common.c

@@ -47,8 +47,8 @@ static struct
 void
 dpdk_device_error (dpdk_device_t * xd, char *str, int rv)
 {
-  dpdk_log_err ("Interface %U error %d: %s",
-		format_dpdk_device_name, xd->port_id, rv, rte_strerror (rv));
+  dpdk_log_err ("Interface %U error %d: %s", format_dpdk_device_name,
+		xd->device_index, rv, rte_strerror (rv));
   xd->errors = clib_error_return (xd->errors, "%s[port:%d, errno:%d]: %s",
 				  str, xd->port_id, rv, rte_strerror (rv));
 }
@@ -331,15 +331,15 @@ dpdk_setup_interrupts (dpdk_device_t *xd)
   if (rte_eth_dev_rx_intr_enable (xd->port_id, 0))
     {
       dpdk_log_info ("probe for interrupt mode for device %U. Failed.\n",
-		     format_dpdk_device_name, xd->port_id);
+		     format_dpdk_device_name, xd->device_index);
     }
   else
     {
       xd->flags |= DPDK_DEVICE_FLAG_INT_SUPPORTED;
       if (!(xd->flags & DPDK_DEVICE_FLAG_INT_UNMASKABLE))
 	rte_eth_dev_rx_intr_disable (xd->port_id, 0);
       dpdk_log_info ("Probe for interrupt mode for device %U. Success.\n",
-		     format_dpdk_device_name, xd->port_id);
+		     format_dpdk_device_name, xd->device_index);
     }
 
   if (xd->flags & DPDK_DEVICE_FLAG_INT_SUPPORTED)
@@ -360,8 +360,8 @@ dpdk_setup_interrupts (dpdk_device_t *xd)
 	  f.flags = UNIX_FILE_EVENT_EDGE_TRIGGERED;
 	  f.file_descriptor = rxq->efd;
 	  f.private_data = rxq->queue_index;
-	  f.description =
-	    format (0, "%U queue %u", format_dpdk_device_name, xd->port_id, q);
+	  f.description = format (0, "%U queue %u", format_dpdk_device_name,
+				  xd->device_index, q);
 	  rxq->clib_file_index = clib_file_add (&file_main, &f);
 	  vnet_hw_if_set_rx_queue_file_index (vnm, rxq->queue_index,
 					      rxq->clib_file_index);
@@ -419,8 +419,8 @@ dpdk_device_start (dpdk_device_t * xd)
 
   rte_eth_allmulticast_enable (xd->port_id);
 
-  dpdk_log_info ("Interface %U started",
-		 format_dpdk_device_name, xd->port_id);
+  dpdk_log_info ("Interface %U started", format_dpdk_device_name,
+		 xd->device_index);
 }
 
 void
@@ -433,8 +433,8 @@ dpdk_device_stop (dpdk_device_t * xd)
   rte_eth_dev_stop (xd->port_id);
   clib_memset (&xd->link, 0, sizeof (struct rte_eth_link));
 
-  dpdk_log_info ("Interface %U stopped",
-		 format_dpdk_device_name, xd->port_id);
+  dpdk_log_info ("Interface %U stopped", format_dpdk_device_name,
+		 xd->device_index);
 }
 
 void vl_api_force_rpc_call_main_thread (void *fp, u8 * data, u32 data_length);