dpdk: TSO does not work for Cisco VIC

While TSO is supported for Intel NIC, Cisco VIC does not work. The problem is due to txmode offloads is not properly set for the Cisco VIC when enable-tcp-udp-checksum is configured. Type: fix Ticket: VPP-1838 Signed-off-by: Steven Luong <[email protected]> Change-Id: I72c41db9b327ed8d08ef70d74e8cc6206d4a102f
FDio · Feb 14, 2020 · ac8bb92 · ac8bb92
1 parent cd120f9
commit ac8bb92
Showing 1 changed file with 11 additions and 0 deletions.
diff --git a/src/plugins/dpdk/device/init.c b/src/plugins/dpdk/device/init.c
@@ -199,6 +199,15 @@ check_l3cache ()
   return 0;
 }
 
+static void
+dpdk_enable_l4_csum_offload (dpdk_device_t * xd)
+{
+  xd->port_conf.txmode.offloads |= DEV_TX_OFFLOAD_TCP_CKSUM;
+  xd->port_conf.txmode.offloads |= DEV_TX_OFFLOAD_UDP_CKSUM;
+  xd->flags |= DPDK_DEVICE_FLAG_TX_OFFLOAD |
+    DPDK_DEVICE_FLAG_INTEL_PHDR_CKSUM;
+}
+
 static clib_error_t *
 dpdk_lib_init (dpdk_main_t * dm)
 {
@@ -482,6 +491,8 @@ dpdk_lib_init (dpdk_main_t * dm)
 	      /* Cisco VIC */
 	    case VNET_DPDK_PMD_ENIC:
 	      xd->port_type = port_type_from_link_speed (l.link_speed);
+	      if (dm->conf->enable_tcp_udp_checksum)
+		dpdk_enable_l4_csum_offload (xd);
 	      break;
 
 	      /* Intel Red Rock Canyon */