ixgbe: configure VF RSS

[dpdk.git] / lib / librte_pmd_ixgbe / ixgbe_pf.c

diff --git a/lib/librte_pmd_ixgbe/ixgbe_pf.c b/lib/librte_pmd_ixgbe/ixgbe_pf.c
index dbda9b5..93f6e43 100644 (file)
--- a/lib/librte_pmd_ixgbe/ixgbe_pf.c
+++ b/lib/librte_pmd_ixgbe/ixgbe_pf.c
@@ -187,6 +187,21 @@ int ixgbe_pf_host_configure(struct rte_eth_dev *eth_dev)
        IXGBE_WRITE_REG(hw, IXGBE_MPSAR_LO(hw->mac.num_rar_entries), 0);
        IXGBE_WRITE_REG(hw, IXGBE_MPSAR_HI(hw->mac.num_rar_entries), 0);
 
+       /*
+        * VF RSS can support at most 4 queues for each VF, even if
+        * 8 queues are available for each VF, it need refine to 4
+        * queues here due to this limitation, otherwise no queue
+        * will receive any packet even RSS is enabled.
+        */
+       if (eth_dev->data->dev_conf.rxmode.mq_mode == ETH_MQ_RX_VMDQ_RSS) {
+               if (RTE_ETH_DEV_SRIOV(eth_dev).nb_q_per_pool == 8) {
+                       RTE_ETH_DEV_SRIOV(eth_dev).active = ETH_32_POOLS;
+                       RTE_ETH_DEV_SRIOV(eth_dev).nb_q_per_pool = 4;
+                       RTE_ETH_DEV_SRIOV(eth_dev).def_pool_q_idx =
+                               dev_num_vf(eth_dev) * 4;
+               }
+       }
+
        /* set VMDq map to default PF pool */
        hw->mac.ops.set_vmdq(hw, 0, RTE_ETH_DEV_SRIOV(eth_dev).def_vmdq_idx);