be2net: setup xps queue mapping

This patch sets up xps queue mapping on load, so that TX traffic is
steered to the queue whose irqs are being processed by the current cpu.
This helps in avoiding TX lock contention.

Signed-off-by: Sathya Perla <sathya.perla@emulex.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/emulex/benet/be_main.c b/drivers/net/ethernet/emulex/benet/be_main.c
index 3541207a8fed25db5889f0a449e5a24214daaab1..5ff7fba9b67c9d39043d1094193db714f7625a6b 100644 (file)
--- a/drivers/net/ethernet/emulex/benet/be_main.c
+++ b/drivers/net/ethernet/emulex/benet/be_main.c
@@ -2454,8 +2454,9 @@ static void be_tx_queues_destroy(struct be_adapter *adapter)
 
 static int be_tx_qs_create(struct be_adapter *adapter)
 {
-       struct be_queue_info *cq, *eq;
+       struct be_queue_info *cq;
        struct be_tx_obj *txo;
+       struct be_eq_obj *eqo;
        int status, i;
 
        adapter->num_tx_qs = min(adapter->num_evt_qs, be_max_txqs(adapter));
@@ -2473,8 +2474,8 @@ static int be_tx_qs_create(struct be_adapter *adapter)
                /* If num_evt_qs is less than num_tx_qs, then more than
                 * one txq share an eq
                 */
-               eq = &adapter->eq_obj[i % adapter->num_evt_qs].q;
-               status = be_cmd_cq_create(adapter, cq, eq, false, 3);
+               eqo = &adapter->eq_obj[i % adapter->num_evt_qs];
+               status = be_cmd_cq_create(adapter, cq, &eqo->q, false, 3);
                if (status)
                        return status;
 
@@ -2486,6 +2487,9 @@ static int be_tx_qs_create(struct be_adapter *adapter)
                status = be_cmd_txq_create(adapter, txo);
                if (status)
                        return status;
+
+               netif_set_xps_queue(adapter->netdev, eqo->affinity_mask,
+                                   eqo->idx);
        }
 
        dev_info(&adapter->pdev->dev, "created %d TX queue(s)\n",