1 files changed, 104 insertions, 31 deletions

diff --git a/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c b/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c
index b9d1c1c8ca5a..02c11a7f7d29 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c
@@ -69,7 +69,7 @@ static inline bool i40e_vc_isvalid_vector_id(struct i40e_vf *vf, u8 vector_id)
 {
 	struct i40e_pf *pf = vf->pf;
 
-	return vector_id <= pf->hw.func_caps.num_msix_vectors_vf;
+	return vector_id < pf->hw.func_caps.num_msix_vectors_vf;
 }
 
 /***********************vf resource mgmt routines*****************/
@@ -126,8 +126,8 @@ static void i40e_config_irq_link_list(struct i40e_vf *vf, u16 vsi_idx,
 		reg_idx = I40E_VPINT_LNKLST0(vf->vf_id);
 	else
 		reg_idx = I40E_VPINT_LNKLSTN(
-					   (pf->hw.func_caps.num_msix_vectors_vf
-					      * vf->vf_id) + (vector_id - 1));
+		     ((pf->hw.func_caps.num_msix_vectors_vf - 1) * vf->vf_id) +
+		     (vector_id - 1));
 
 	if (vecmap->rxq_map == 0 && vecmap->txq_map == 0) {
 		/* Special case - No queues mapped on this vector */
@@ -230,6 +230,9 @@ static int i40e_config_vsi_tx_queue(struct i40e_vf *vf, u16 vsi_idx,
 	tx_ctx.qlen = info->ring_len;
 	tx_ctx.rdylist = le16_to_cpu(pf->vsi[vsi_idx]->info.qs_handle[0]);
 	tx_ctx.rdylist_act = 0;
+	tx_ctx.head_wb_ena = 1;
+	tx_ctx.head_wb_addr = info->dma_ring_addr +
+			      (info->ring_len * sizeof(struct i40e_tx_desc));
 
 	/* clear the context in the HMC */
 	ret = i40e_clear_lan_tx_queue_context(hw, pf_queue_id);
@@ -408,18 +411,10 @@ static int i40e_alloc_vsi_res(struct i40e_vf *vf, enum i40e_vsi_type type)
 				 "Could not allocate VF broadcast filter\n");
 	}
 
-	if (!f) {
-		dev_err(&pf->pdev->dev, "Unable to add ucast filter\n");
-		ret = -ENOMEM;
-		goto error_alloc_vsi_res;
-	}
-
 	/* program mac filter */
 	ret = i40e_sync_vsi_filters(vsi);
-	if (ret) {
+	if (ret)
 		dev_err(&pf->pdev->dev, "Unable to program ucast filters\n");
-		goto error_alloc_vsi_res;
-	}
 
 error_alloc_vsi_res:
 	return ret;
@@ -514,7 +509,8 @@ static void i40e_free_vf_res(struct i40e_vf *vf)
 		vf->lan_vsi_index = 0;
 		vf->lan_vsi_id = 0;
 	}
-	msix_vf = pf->hw.func_caps.num_msix_vectors_vf + 1;
+	msix_vf = pf->hw.func_caps.num_msix_vectors_vf;
+
 	/* disable interrupts so the VF starts in a known state */
 	for (i = 0; i < msix_vf; i++) {
 		/* format is same for both registers */
@@ -679,9 +675,9 @@ void i40e_reset_vf(struct i40e_vf *vf, bool flr)
 complete_reset:
 	/* reallocate vf resources to reset the VSI state */
 	i40e_free_vf_res(vf);
-	mdelay(10);
 	i40e_alloc_vf_res(vf);
 	i40e_enable_vf_mappings(vf);
+	set_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states);
 
 	/* tell the VF the reset is done */
 	wr32(hw, I40E_VFGEN_RSTAT1(vf->vf_id), I40E_VFR_VFACTIVE);
@@ -847,7 +843,7 @@ void i40e_free_vfs(struct i40e_pf *pf)
  *
  * allocate vf resources
  **/
-static int i40e_alloc_vfs(struct i40e_pf *pf, u16 num_alloc_vfs)
+int i40e_alloc_vfs(struct i40e_pf *pf, u16 num_alloc_vfs)
 {
 	struct i40e_vf *vfs;
 	int i, ret = 0;
@@ -855,16 +851,18 @@ static int i40e_alloc_vfs(struct i40e_pf *pf, u16 num_alloc_vfs)
 	/* Disable interrupt 0 so we don't try to handle the VFLR. */
 	i40e_irq_dynamic_disable_icr0(pf);
 
-	ret = pci_enable_sriov(pf->pdev, num_alloc_vfs);
-	if (ret) {
-		dev_err(&pf->pdev->dev,
-			"pci_enable_sriov failed with error %d!\n", ret);
-		pf->num_alloc_vfs = 0;
-		goto err_iov;
+	/* Check to see if we're just allocating resources for extant VFs */
+	if (pci_num_vf(pf->pdev) != num_alloc_vfs) {
+		ret = pci_enable_sriov(pf->pdev, num_alloc_vfs);
+		if (ret) {
+			dev_err(&pf->pdev->dev,
+				"Failed to enable SR-IOV, error %d.\n", ret);
+			pf->num_alloc_vfs = 0;
+			goto err_iov;
+		}
 	}
-
 	/* allocate memory */
-	vfs = kzalloc(num_alloc_vfs * sizeof(struct i40e_vf), GFP_KERNEL);
+	vfs = kcalloc(num_alloc_vfs, sizeof(struct i40e_vf), GFP_KERNEL);
 	if (!vfs) {
 		ret = -ENOMEM;
 		goto err_alloc;
@@ -1776,7 +1774,7 @@ int i40e_vc_process_vf_msg(struct i40e_pf *pf, u16 vf_id, u32 v_opcode,
 			   u32 v_retval, u8 *msg, u16 msglen)
 {
 	struct i40e_hw *hw = &pf->hw;
-	int local_vf_id = vf_id - hw->func_caps.vf_base_id;
+	unsigned int local_vf_id = vf_id - hw->func_caps.vf_base_id;
 	struct i40e_vf *vf;
 	int ret;
 
@@ -1873,7 +1871,8 @@ int i40e_vc_process_vflr_event(struct i40e_pf *pf)
 			/* clear the bit in GLGEN_VFLRSTAT */
 			wr32(hw, I40E_GLGEN_VFLRSTAT(reg_idx), (1 << bit_idx));
 
-			i40e_reset_vf(vf, true);
+			if (!test_bit(__I40E_DOWN, &pf->state))
+				i40e_reset_vf(vf, true);
 		}
 	}
 
@@ -1924,15 +1923,28 @@ static void i40e_vc_vf_broadcast(struct i40e_pf *pf,
 void i40e_vc_notify_link_state(struct i40e_pf *pf)
 {
 	struct i40e_virtchnl_pf_event pfe;
+	struct i40e_hw *hw = &pf->hw;
+	struct i40e_vf *vf = pf->vf;
+	struct i40e_link_status *ls = &pf->hw.phy.link_info;
+	int i;
 
 	pfe.event = I40E_VIRTCHNL_EVENT_LINK_CHANGE;
 	pfe.severity = I40E_PF_EVENT_SEVERITY_INFO;
-	pfe.event_data.link_event.link_status =
-	    pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP;
-	pfe.event_data.link_event.link_speed = pf->hw.phy.link_info.link_speed;
-
-	i40e_vc_vf_broadcast(pf, I40E_VIRTCHNL_OP_EVENT, I40E_SUCCESS,
-			     (u8 *)&pfe, sizeof(struct i40e_virtchnl_pf_event));
+	for (i = 0; i < pf->num_alloc_vfs; i++) {
+		if (vf->link_forced) {
+			pfe.event_data.link_event.link_status = vf->link_up;
+			pfe.event_data.link_event.link_speed =
+				(vf->link_up ? I40E_LINK_SPEED_40GB : 0);
+		} else {
+			pfe.event_data.link_event.link_status =
+				ls->link_info & I40E_AQ_LINK_UP;
+			pfe.event_data.link_event.link_speed = ls->link_speed;
+		}
+		i40e_aq_send_msg_to_vf(hw, vf->vf_id, I40E_VIRTCHNL_OP_EVENT,
+				       0, (u8 *)&pfe, sizeof(pfe),
+				       NULL);
+		vf++;
+	}
 }
 
 /**
@@ -2197,3 +2209,64 @@ int i40e_ndo_get_vf_config(struct net_device *netdev,
 error_param:
 	return ret;
 }
+
+/**
+ * i40e_ndo_set_vf_link_state
+ * @netdev: network interface device structure
+ * @vf_id: vf identifier
+ * @link: required link state
+ *
+ * Set the link state of a specified VF, regardless of physical link state
+ **/
+int i40e_ndo_set_vf_link_state(struct net_device *netdev, int vf_id, int link)
+{
+	struct i40e_netdev_priv *np = netdev_priv(netdev);
+	struct i40e_pf *pf = np->vsi->back;
+	struct i40e_virtchnl_pf_event pfe;
+	struct i40e_hw *hw = &pf->hw;
+	struct i40e_vf *vf;
+	int ret = 0;
+
+	/* validate the request */
+	if (vf_id >= pf->num_alloc_vfs) {
+		dev_err(&pf->pdev->dev, "Invalid VF Identifier %d\n", vf_id);
+		ret = -EINVAL;
+		goto error_out;
+	}
+
+	vf = &pf->vf[vf_id];
+
+	pfe.event = I40E_VIRTCHNL_EVENT_LINK_CHANGE;
+	pfe.severity = I40E_PF_EVENT_SEVERITY_INFO;
+
+	switch (link) {
+	case IFLA_VF_LINK_STATE_AUTO:
+		vf->link_forced = false;
+		pfe.event_data.link_event.link_status =
+			pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP;
+		pfe.event_data.link_event.link_speed =
+			pf->hw.phy.link_info.link_speed;
+		break;
+	case IFLA_VF_LINK_STATE_ENABLE:
+		vf->link_forced = true;
+		vf->link_up = true;
+		pfe.event_data.link_event.link_status = true;
+		pfe.event_data.link_event.link_speed = I40E_LINK_SPEED_40GB;
+		break;
+	case IFLA_VF_LINK_STATE_DISABLE:
+		vf->link_forced = true;
+		vf->link_up = false;
+		pfe.event_data.link_event.link_status = false;
+		pfe.event_data.link_event.link_speed = 0;
+		break;
+	default:
+		ret = -EINVAL;
+		goto error_out;
+	}
+	/* Notify the VF of its new link state */
+	i40e_aq_send_msg_to_vf(hw, vf->vf_id, I40E_VIRTCHNL_OP_EVENT,
+			       0, (u8 *)&pfe, sizeof(pfe), NULL);
+
+error_out:
+	return ret;
+}