commit 66f9af855a4df146713866f6076207edea44a4f5
author Helin Zhang <helin.zhang@intel.com> Mon Oct 26 19:44:34 2015 -0400
committer Jeff Kirsher <jeffrey.t.kirsher@intel.com> Tue Dec 01 22:50:36 2015 -0800
tree 61f7a2e32158fe0920bebe6ce5ca440deb910a56
parent 90b02b4392eb9778265ec6b4fef034010a937910

i40evf: add new fields to store user configuration of RSS

This patch adds new fields to i40e_vsi to store user configured
RSS config data and code to use it.

Change-ID: Ic5d3db8d9df52182b560248f8cdca9c5c7546879
Signed-off-by: Helin Zhang <helin.zhang@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

drivers/net/ethernet/intel/i40evf/i40evf_main.c

diff --git a/drivers/net/ethernet/intel/i40evf/i40evf_main.c b/drivers/net/ethernet/intel/i40evf/i40evf_main.c
index 68251fa..1cd5d5d 100644
--- a/drivers/net/ethernet/intel/i40evf/i40evf_main.c
+++ b/drivers/net/ethernet/intel/i40evf/i40evf_main.c
@@ -1453,9 +1453,21 @@
 	lut = kzalloc(I40EVF_HLUT_ARRAY_SIZE, GFP_KERNEL);
 	if (!lut)
 		return -ENOMEM;
-	i40evf_fill_rss_lut(lut, I40EVF_HLUT_ARRAY_SIZE,
-			    adapter->num_active_queues);
-	netdev_rss_key_fill((void *)seed, I40EVF_HKEY_ARRAY_SIZE);
+
+	/* Use user configured lut if there is one, otherwise use default */
+	if (vsi->rss_lut_user)
+		memcpy(lut, vsi->rss_lut_user, I40EVF_HLUT_ARRAY_SIZE);
+	else
+		i40evf_fill_rss_lut(lut, I40EVF_HLUT_ARRAY_SIZE,
+				    adapter->num_active_queues);
+
+	/* Use user configured hash key if there is one, otherwise
+	 * user default.
+	 */
+	if (vsi->rss_hkey_user)
+		memcpy(seed, vsi->rss_hkey_user, I40EVF_HKEY_ARRAY_SIZE);
+	else
+		netdev_rss_key_fill((void *)seed, I40EVF_HKEY_ARRAY_SIZE);
 	ret = i40evf_config_rss(vsi, seed, lut, I40EVF_HLUT_ARRAY_SIZE);
 	kfree(lut);
 
@@ -1583,6 +1595,22 @@
 }
 
 /**
+ * i40evf_clear_rss_config_user - Clear user configurations of RSS
+ * @vsi: Pointer to VSI structure
+ **/
+static void i40evf_clear_rss_config_user(struct i40e_vsi *vsi)
+{
+	if (!vsi)
+		return;
+
+	kfree(vsi->rss_hkey_user);
+	vsi->rss_hkey_user = NULL;
+
+	kfree(vsi->rss_lut_user);
+	vsi->rss_lut_user = NULL;
+}
+
+/**
  * i40evf_watchdog_timer - Periodic call-back timer
  * @data: pointer to adapter disguised as unsigned long
  **/
@@ -2770,6 +2798,9 @@
 
 	flush_scheduled_work();
 
+	/* Clear user configurations for RSS */
+	i40evf_clear_rss_config_user(&adapter->vsi);
+
 	if (hw->aq.asq.count)
 		i40evf_shutdown_adminq(hw);