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i40e/i40evf: Add WB_ON_ITR offload support

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X722 has a way to work around the descriptor WB issue,
this offload helps turn that feature on.

Change-ID: I7ffa67622426bfca5a651417b63e3afcfeb60412
Signed-off-by: Anjali Singhai Jain <anjali.singhai@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Anjali Singhai Jain 2015-09-03 17:18:53 -04:00 committed by Jeff Kirsher
parent 3b6c2179ee
commit 1f01227916
5 changed files with 13 additions and 1 deletions
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1
drivers/net/ethernet/intel/i40e/i40e_virtchnl.h
View File

@ -150,6 +150,7 @@ struct i40e_virtchnl_vsi_resource {
#define I40E_VIRTCHNL_VF_OFFLOAD_FCOE 0x00000004
#define I40E_VIRTCHNL_VF_OFFLOAD_RSS_AQ 0x00000008
#define I40E_VIRTCHNL_VF_OFFLOAD_RSS_REG 0x00000010
#define I40E_VIRTCHNL_VF_OFFLOAD_WB_ON_ITR 0x00000020
#define I40E_VIRTCHNL_VF_OFFLOAD_VLAN 0x00010000
#define I40E_VIRTCHNL_VF_OFFLOAD_RX_POLLING 0x00020000

4
drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c
View File

@ -1203,6 +1203,10 @@ static int i40e_vc_get_vf_resources_msg(struct i40e_vf *vf, u8 *msg)
} else {
vfres->vf_offload_flags |= I40E_VIRTCHNL_VF_OFFLOAD_RSS_REG;
}
if (vf->driver_caps & I40E_VIRTCHNL_VF_OFFLOAD_RX_POLLING)
vfres->vf_offload_flags |= I40E_VIRTCHNL_VF_OFFLOAD_RX_POLLING;
vfres->num_vsis = num_vsis;
vfres->num_queue_pairs = vf->num_queue_pairs;
vfres->max_vectors = pf->hw.func_caps.num_msix_vectors_vf;

1
drivers/net/ethernet/intel/i40evf/i40e_virtchnl.h
View File

@ -150,6 +150,7 @@ struct i40e_virtchnl_vsi_resource {
#define I40E_VIRTCHNL_VF_OFFLOAD_FCOE 0x00000004
#define I40E_VIRTCHNL_VF_OFFLOAD_RSS_AQ 0x00000008
#define I40E_VIRTCHNL_VF_OFFLOAD_RSS_REG 0x00000010
#define I40E_VIRTCHNL_VF_OFFLOAD_WB_ON_ITR 0x00000020
#define I40E_VIRTCHNL_VF_OFFLOAD_VLAN 0x00010000
#define I40E_VIRTCHNL_VF_OFFLOAD_RX_POLLING 0x00020000

5
drivers/net/ethernet/intel/i40evf/i40evf_main.c
View File

@ -1123,6 +1123,8 @@ static int i40evf_alloc_queues(struct i40evf_adapter *adapter)
tx_ring->netdev = adapter->netdev;
tx_ring->dev = &adapter->pdev->dev;
tx_ring->count = adapter->tx_desc_count;
if (adapter->flags & I40E_FLAG_WB_ON_ITR_CAPABLE)
tx_ring->flags |= I40E_TXR_FLAGS_WB_ON_ITR;
adapter->tx_rings[i] = tx_ring;
rx_ring = &tx_ring[1];
@ -2275,6 +2277,9 @@ static void i40evf_init_task(struct work_struct *work)
if (err)
goto err_sw_init;
i40evf_map_rings_to_vectors(adapter);
if (adapter->vf_res->vf_offload_flags &
I40E_VIRTCHNL_VF_OFFLOAD_WB_ON_ITR)
adapter->flags |= I40EVF_FLAG_WB_ON_ITR_CAPABLE;
if (!RSS_AQ(adapter))
i40evf_configure_rss(adapter);
err = i40evf_request_misc_irq(adapter);

3
drivers/net/ethernet/intel/i40evf/i40evf_virtchnl.c
View File

@ -156,7 +156,8 @@ int i40evf_send_vf_config_msg(struct i40evf_adapter *adapter)
caps = I40E_VIRTCHNL_VF_OFFLOAD_L2 |
I40E_VIRTCHNL_VF_OFFLOAD_RSS_AQ |
I40E_VIRTCHNL_VF_OFFLOAD_RSS_REG |
I40E_VIRTCHNL_VF_OFFLOAD_VLAN;
I40E_VIRTCHNL_VF_OFFLOAD_VLAN |
I40E_VIRTCHNL_VF_OFFLOAD_WB_ON_ITR;
adapter->current_op = I40E_VIRTCHNL_OP_GET_VF_RESOURCES;
adapter->aq_required &= ~I40EVF_FLAG_AQ_GET_CONFIG;
if (PF_IS_V11(adapter))