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:
@@ -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 */
