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Commit 1f012279 authored by Anjali Singhai Jain's avatar Anjali Singhai Jain Committed by Jeff Kirsher
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i40e/i40evf: Add WB_ON_ITR offload support 



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

Change-ID: I7ffa67622426bfca5a651417b63e3afcfeb60412
Signed-off-by: default avatarAnjali Singhai Jain <anjali.singhai@intel.com>
Tested-by: default avatarAndrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: default avatarJeff Kirsher <jeffrey.t.kirsher@intel.com>
parent 3b6c2179

drivers/net/ethernet/intel/i40e/i40e_virtchnl.h

+1 −0
Original line number Diff line number Diff line
@@ -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

drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c

+4 −0
Original line number Diff line number Diff line
@@ -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;

drivers/net/ethernet/intel/i40evf/i40e_virtchnl.h

+1 −0
Original line number Diff line number Diff line
@@ -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

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

+5 −0
Original line number Diff line number Diff line
@@ -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);

drivers/net/ethernet/intel/i40evf/i40evf_virtchnl.c

+2 −1
Original line number Diff line number Diff line
@@ -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))