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Message-Id: <1449044735-68599-9-git-send-email-jeffrey.t.kirsher@intel.com>
Date: Wed, 2 Dec 2015 00:25:26 -0800
From: Jeff Kirsher <jeffrey.t.kirsher@...el.com>
To: davem@...emloft.net
Cc: Helin Zhang <helin.zhang@...el.com>, netdev@...r.kernel.org,
nhorman@...hat.com, sassmann@...hat.com, jogreene@...hat.com,
Jeff Kirsher <jeffrey.t.kirsher@...el.com>
Subject: [net-next 08/17] i40evf: add new fields to store user configuration of RSS
From: Helin Zhang <helin.zhang@...el.com>
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@...el.com>
Tested-by: Andrew Bowers <andrewx.bowers@...el.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@...el.com>
---
drivers/net/ethernet/intel/i40evf/i40evf.h | 2 ++
drivers/net/ethernet/intel/i40evf/i40evf_ethtool.c | 31 ++++++++++--------
drivers/net/ethernet/intel/i40evf/i40evf_main.c | 37 ++++++++++++++++++++--
3 files changed, 54 insertions(+), 16 deletions(-)
diff --git a/drivers/net/ethernet/intel/i40evf/i40evf.h b/drivers/net/ethernet/intel/i40evf/i40evf.h
index 5f2e61d..090c604 100644
--- a/drivers/net/ethernet/intel/i40evf/i40evf.h
+++ b/drivers/net/ethernet/intel/i40evf/i40evf.h
@@ -67,6 +67,8 @@ struct i40e_vsi {
u16 rx_itr_setting;
u16 tx_itr_setting;
u16 qs_handle;
+ u8 *rss_hkey_user; /* User configured hash keys */
+ u8 *rss_lut_user; /* User configured lookup table entries */
};
/* How many Rx Buffers do we bundle into one write to the hardware ? */
diff --git a/drivers/net/ethernet/intel/i40evf/i40evf_ethtool.c b/drivers/net/ethernet/intel/i40evf/i40evf_ethtool.c
index a520970..966863c 100644
--- a/drivers/net/ethernet/intel/i40evf/i40evf_ethtool.c
+++ b/drivers/net/ethernet/intel/i40evf/i40evf_ethtool.c
@@ -678,9 +678,7 @@ static int i40evf_set_rxfh(struct net_device *netdev, const u32 *indir,
{
struct i40evf_adapter *adapter = netdev_priv(netdev);
struct i40e_vsi *vsi = &adapter->vsi;
- u8 seed_def[I40EVF_HKEY_ARRAY_SIZE];
- u8 *seed = NULL, *lut;
- int ret;
+ u8 *seed = NULL;
u16 i;
/* We do not allow change in unsupported parameters */
@@ -691,21 +689,28 @@ static int i40evf_set_rxfh(struct net_device *netdev, const u32 *indir,
return 0;
if (key) {
- memcpy(seed_def, key, I40EVF_HKEY_ARRAY_SIZE);
- seed = seed_def;
+ if (!vsi->rss_hkey_user) {
+ vsi->rss_hkey_user = kzalloc(I40EVF_HKEY_ARRAY_SIZE,
+ GFP_KERNEL);
+ if (!vsi->rss_hkey_user)
+ return -ENOMEM;
+ }
+ memcpy(vsi->rss_hkey_user, key, I40EVF_HKEY_ARRAY_SIZE);
+ seed = vsi->rss_hkey_user;
+ }
+ if (!vsi->rss_lut_user) {
+ vsi->rss_lut_user = kzalloc(I40EVF_HLUT_ARRAY_SIZE,
+ GFP_KERNEL);
+ if (!vsi->rss_lut_user)
+ return -ENOMEM;
}
- lut = kzalloc(I40EVF_HLUT_ARRAY_SIZE, GFP_KERNEL);
- if (!lut)
- return -ENOMEM;
/* Each 32 bits pointed by 'indir' is stored with a lut entry */
for (i = 0; i < I40EVF_HLUT_ARRAY_SIZE; i++)
- lut[i] = (u8)(indir[i]);
+ vsi->rss_lut_user[i] = (u8)(indir[i]);
- ret = i40evf_config_rss(vsi, seed, lut, I40EVF_HLUT_ARRAY_SIZE);
- kfree(lut);
-
- return ret;
+ return i40evf_config_rss(vsi, seed, vsi->rss_lut_user,
+ I40EVF_HLUT_ARRAY_SIZE);
}
static const struct ethtool_ops i40evf_ethtool_ops = {
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 @@ static int i40evf_init_rss(struct i40evf_adapter *adapter)
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 @@ err_set_interrupt:
}
/**
+ * 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 @@ static void i40evf_remove(struct pci_dev *pdev)
flush_scheduled_work();
+ /* Clear user configurations for RSS */
+ i40evf_clear_rss_config_user(&adapter->vsi);
+
if (hw->aq.asq.count)
i40evf_shutdown_adminq(hw);
--
2.5.0
--
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