igb/ixgbe: allow RSS with only one Rx queue

It should be possible to enable RSS with one Rx queue.
RSS hash can be useful independently of the number of Rx queues.
Applications can use RSS hash to identify different IP flows.

Signed-off-by: Maxime Leroy <maxime.leroy@6wind.com>
Acked-by: Ivan Boule <ivan.boule@6wind.com>

diff --git a/lib/librte_pmd_e1000/igb_rxtx.c b/lib/librte_pmd_e1000/igb_rxtx.c
index 7e7bd4b854c1c9e71c093475b023d1d504d40ab0..cb3b10a5822d08f8e5c5ea58f2093ada23371dde 100644 (file)
--- a/lib/librte_pmd_e1000/igb_rxtx.c
+++ b/lib/librte_pmd_e1000/igb_rxtx.c
@@ -1753,8 +1753,7 @@ igb_dev_mq_rx_configure(struct rte_eth_dev *dev)
                /*
                * SRIOV inactive scheme
                */
-               if (dev->data->nb_rx_queues > 1)
-                       switch (dev->data->dev_conf.rxmode.mq_mode) {
+               switch (dev->data->dev_conf.rxmode.mq_mode) {
                        case ETH_MQ_RX_RSS:
                                igb_rss_configure(dev);
                                break;
@@ -1767,9 +1766,7 @@ igb_dev_mq_rx_configure(struct rte_eth_dev *dev)
                        default: 
                                igb_rss_disable(dev);
                                break;
-                       }
-               else
-                       igb_rss_disable(dev);
+               }
        }
  
        return 0;

diff --git a/lib/librte_pmd_ixgbe/ixgbe_rxtx.c b/lib/librte_pmd_ixgbe/ixgbe_rxtx.c
index b63aefe1369cc4c8996f7367dd0f6175937e982e..7415ddc0f7cce65e709f6a8a56ff2b017381a2f5 100644 (file)
--- a/lib/librte_pmd_ixgbe/ixgbe_rxtx.c
+++ b/lib/librte_pmd_ixgbe/ixgbe_rxtx.c
@@ -3226,8 +3226,7 @@ ixgbe_dev_mq_rx_configure(struct rte_eth_dev *dev)
                 * SRIOV inactive scheme
                 * any DCB/RSS w/o VMDq multi-queue setting
                 */
-               if (dev->data->nb_rx_queues > 1)
-                       switch (dev->data->dev_conf.rxmode.mq_mode) {
+               switch (dev->data->dev_conf.rxmode.mq_mode) {
                        case ETH_MQ_RX_RSS:
                                ixgbe_rss_configure(dev);
                                break;
@@ -3243,9 +3242,7 @@ ixgbe_dev_mq_rx_configure(struct rte_eth_dev *dev)
                        case ETH_MQ_RX_NONE:
                                /* if mq_mode is none, disable rss mode.*/
                        default: ixgbe_rss_disable(dev);
-                       }
-               else
-                       ixgbe_rss_disable(dev);
+               }
        } else {
                switch (RTE_ETH_DEV_SRIOV(dev).active) {
                /*