i40e_virtchnl_pf.c 61.0 KB
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/*******************************************************************************
 *
 * Intel Ethernet Controller XL710 Family Linux Driver
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 * Copyright(c) 2013 - 2014 Intel Corporation.
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 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms and conditions of the GNU General Public License,
 * version 2, as published by the Free Software Foundation.
 *
 * This program is distributed in the hope it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 * more details.
 *
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 * You should have received a copy of the GNU General Public License along
 * with this program.  If not, see <http://www.gnu.org/licenses/>.
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 *
 * The full GNU General Public License is included in this distribution in
 * the file called "COPYING".
 *
 * Contact Information:
 * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
 *
 ******************************************************************************/

#include "i40e.h"

/***********************misc routines*****************************/

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/**
 * i40e_vc_disable_vf
 * @pf: pointer to the pf info
 * @vf: pointer to the vf info
 *
 * Disable the VF through a SW reset
 **/
static inline void i40e_vc_disable_vf(struct i40e_pf *pf, struct i40e_vf *vf)
{
	struct i40e_hw *hw = &pf->hw;
	u32 reg;

	reg = rd32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id));
	reg |= I40E_VPGEN_VFRTRIG_VFSWR_MASK;
	wr32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id), reg);
	i40e_flush(hw);
}

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/**
 * i40e_vc_isvalid_vsi_id
 * @vf: pointer to the vf info
 * @vsi_id: vf relative vsi id
 *
 * check for the valid vsi id
 **/
static inline bool i40e_vc_isvalid_vsi_id(struct i40e_vf *vf, u8 vsi_id)
{
	struct i40e_pf *pf = vf->pf;

	return pf->vsi[vsi_id]->vf_id == vf->vf_id;
}

/**
 * i40e_vc_isvalid_queue_id
 * @vf: pointer to the vf info
 * @vsi_id: vsi id
 * @qid: vsi relative queue id
 *
 * check for the valid queue id
 **/
static inline bool i40e_vc_isvalid_queue_id(struct i40e_vf *vf, u8 vsi_id,
					    u8 qid)
{
	struct i40e_pf *pf = vf->pf;

	return qid < pf->vsi[vsi_id]->num_queue_pairs;
}

/**
 * i40e_vc_isvalid_vector_id
 * @vf: pointer to the vf info
 * @vector_id: vf relative vector id
 *
 * check for the valid vector id
 **/
static inline bool i40e_vc_isvalid_vector_id(struct i40e_vf *vf, u8 vector_id)
{
	struct i40e_pf *pf = vf->pf;

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	return vector_id < pf->hw.func_caps.num_msix_vectors_vf;
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}

/***********************vf resource mgmt routines*****************/

/**
 * i40e_vc_get_pf_queue_id
 * @vf: pointer to the vf info
 * @vsi_idx: index of VSI in PF struct
 * @vsi_queue_id: vsi relative queue id
 *
 * return pf relative queue id
 **/
static u16 i40e_vc_get_pf_queue_id(struct i40e_vf *vf, u8 vsi_idx,
				   u8 vsi_queue_id)
{
	struct i40e_pf *pf = vf->pf;
	struct i40e_vsi *vsi = pf->vsi[vsi_idx];
	u16 pf_queue_id = I40E_QUEUE_END_OF_LIST;

	if (le16_to_cpu(vsi->info.mapping_flags) &
	    I40E_AQ_VSI_QUE_MAP_NONCONTIG)
		pf_queue_id =
			le16_to_cpu(vsi->info.queue_mapping[vsi_queue_id]);
	else
		pf_queue_id = le16_to_cpu(vsi->info.queue_mapping[0]) +
			      vsi_queue_id;

	return pf_queue_id;
}

/**
 * i40e_config_irq_link_list
 * @vf: pointer to the vf info
 * @vsi_idx: index of VSI in PF struct
 * @vecmap: irq map info
 *
 * configure irq link list from the map
 **/
static void i40e_config_irq_link_list(struct i40e_vf *vf, u16 vsi_idx,
				      struct i40e_virtchnl_vector_map *vecmap)
{
	unsigned long linklistmap = 0, tempmap;
	struct i40e_pf *pf = vf->pf;
	struct i40e_hw *hw = &pf->hw;
	u16 vsi_queue_id, pf_queue_id;
	enum i40e_queue_type qtype;
	u16 next_q, vector_id;
	u32 reg, reg_idx;
	u16 itr_idx = 0;

	vector_id = vecmap->vector_id;
	/* setup the head */
	if (0 == vector_id)
		reg_idx = I40E_VPINT_LNKLST0(vf->vf_id);
	else
		reg_idx = I40E_VPINT_LNKLSTN(
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		     ((pf->hw.func_caps.num_msix_vectors_vf - 1) * vf->vf_id) +
		     (vector_id - 1));
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	if (vecmap->rxq_map == 0 && vecmap->txq_map == 0) {
		/* Special case - No queues mapped on this vector */
		wr32(hw, reg_idx, I40E_VPINT_LNKLST0_FIRSTQ_INDX_MASK);
		goto irq_list_done;
	}
	tempmap = vecmap->rxq_map;
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	for_each_set_bit(vsi_queue_id, &tempmap, I40E_MAX_VSI_QP) {
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		linklistmap |= (1 <<
				(I40E_VIRTCHNL_SUPPORTED_QTYPES *
				 vsi_queue_id));
	}

	tempmap = vecmap->txq_map;
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	for_each_set_bit(vsi_queue_id, &tempmap, I40E_MAX_VSI_QP) {
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		linklistmap |= (1 <<
				(I40E_VIRTCHNL_SUPPORTED_QTYPES * vsi_queue_id
				 + 1));
	}

	next_q = find_first_bit(&linklistmap,
				(I40E_MAX_VSI_QP *
				 I40E_VIRTCHNL_SUPPORTED_QTYPES));
	vsi_queue_id = next_q/I40E_VIRTCHNL_SUPPORTED_QTYPES;
	qtype = next_q%I40E_VIRTCHNL_SUPPORTED_QTYPES;
	pf_queue_id = i40e_vc_get_pf_queue_id(vf, vsi_idx, vsi_queue_id);
	reg = ((qtype << I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_SHIFT) | pf_queue_id);

	wr32(hw, reg_idx, reg);

	while (next_q < (I40E_MAX_VSI_QP * I40E_VIRTCHNL_SUPPORTED_QTYPES)) {
		switch (qtype) {
		case I40E_QUEUE_TYPE_RX:
			reg_idx = I40E_QINT_RQCTL(pf_queue_id);
			itr_idx = vecmap->rxitr_idx;
			break;
		case I40E_QUEUE_TYPE_TX:
			reg_idx = I40E_QINT_TQCTL(pf_queue_id);
			itr_idx = vecmap->txitr_idx;
			break;
		default:
			break;
		}

		next_q = find_next_bit(&linklistmap,
				       (I40E_MAX_VSI_QP *
					I40E_VIRTCHNL_SUPPORTED_QTYPES),
				       next_q + 1);
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		if (next_q <
		    (I40E_MAX_VSI_QP * I40E_VIRTCHNL_SUPPORTED_QTYPES)) {
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			vsi_queue_id = next_q / I40E_VIRTCHNL_SUPPORTED_QTYPES;
			qtype = next_q % I40E_VIRTCHNL_SUPPORTED_QTYPES;
			pf_queue_id = i40e_vc_get_pf_queue_id(vf, vsi_idx,
							      vsi_queue_id);
		} else {
			pf_queue_id = I40E_QUEUE_END_OF_LIST;
			qtype = 0;
		}

		/* format for the RQCTL & TQCTL regs is same */
		reg = (vector_id) |
		    (qtype << I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT) |
		    (pf_queue_id << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT) |
		    (1 << I40E_QINT_RQCTL_CAUSE_ENA_SHIFT) |
		    (itr_idx << I40E_QINT_RQCTL_ITR_INDX_SHIFT);
		wr32(hw, reg_idx, reg);
	}

irq_list_done:
	i40e_flush(hw);
}

/**
 * i40e_config_vsi_tx_queue
 * @vf: pointer to the vf info
 * @vsi_idx: index of VSI in PF struct
 * @vsi_queue_id: vsi relative queue index
 * @info: config. info
 *
 * configure tx queue
 **/
static int i40e_config_vsi_tx_queue(struct i40e_vf *vf, u16 vsi_idx,
				    u16 vsi_queue_id,
				    struct i40e_virtchnl_txq_info *info)
{
	struct i40e_pf *pf = vf->pf;
	struct i40e_hw *hw = &pf->hw;
	struct i40e_hmc_obj_txq tx_ctx;
	u16 pf_queue_id;
	u32 qtx_ctl;
	int ret = 0;

	pf_queue_id = i40e_vc_get_pf_queue_id(vf, vsi_idx, vsi_queue_id);

	/* clear the context structure first */
	memset(&tx_ctx, 0, sizeof(struct i40e_hmc_obj_txq));

	/* only set the required fields */
	tx_ctx.base = info->dma_ring_addr / 128;
	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;
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	tx_ctx.head_wb_ena = 1;
	tx_ctx.head_wb_addr = info->dma_ring_addr +
			      (info->ring_len * sizeof(struct i40e_tx_desc));
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	/* clear the context in the HMC */
	ret = i40e_clear_lan_tx_queue_context(hw, pf_queue_id);
	if (ret) {
		dev_err(&pf->pdev->dev,
			"Failed to clear VF LAN Tx queue context %d, error: %d\n",
			pf_queue_id, ret);
		ret = -ENOENT;
		goto error_context;
	}

	/* set the context in the HMC */
	ret = i40e_set_lan_tx_queue_context(hw, pf_queue_id, &tx_ctx);
	if (ret) {
		dev_err(&pf->pdev->dev,
			"Failed to set VF LAN Tx queue context %d error: %d\n",
			pf_queue_id, ret);
		ret = -ENOENT;
		goto error_context;
	}

	/* associate this queue with the PCI VF function */
	qtx_ctl = I40E_QTX_CTL_VF_QUEUE;
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	qtx_ctl |= ((hw->pf_id << I40E_QTX_CTL_PF_INDX_SHIFT)
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		    & I40E_QTX_CTL_PF_INDX_MASK);
	qtx_ctl |= (((vf->vf_id + hw->func_caps.vf_base_id)
		     << I40E_QTX_CTL_VFVM_INDX_SHIFT)
		    & I40E_QTX_CTL_VFVM_INDX_MASK);
	wr32(hw, I40E_QTX_CTL(pf_queue_id), qtx_ctl);
	i40e_flush(hw);

error_context:
	return ret;
}

/**
 * i40e_config_vsi_rx_queue
 * @vf: pointer to the vf info
 * @vsi_idx: index of VSI in PF struct
 * @vsi_queue_id: vsi relative queue index
 * @info: config. info
 *
 * configure rx queue
 **/
static int i40e_config_vsi_rx_queue(struct i40e_vf *vf, u16 vsi_idx,
				    u16 vsi_queue_id,
				    struct i40e_virtchnl_rxq_info *info)
{
	struct i40e_pf *pf = vf->pf;
	struct i40e_hw *hw = &pf->hw;
	struct i40e_hmc_obj_rxq rx_ctx;
	u16 pf_queue_id;
	int ret = 0;

	pf_queue_id = i40e_vc_get_pf_queue_id(vf, vsi_idx, vsi_queue_id);

	/* clear the context structure first */
	memset(&rx_ctx, 0, sizeof(struct i40e_hmc_obj_rxq));

	/* only set the required fields */
	rx_ctx.base = info->dma_ring_addr / 128;
	rx_ctx.qlen = info->ring_len;

	if (info->splithdr_enabled) {
		rx_ctx.hsplit_0 = I40E_RX_SPLIT_L2      |
				  I40E_RX_SPLIT_IP      |
				  I40E_RX_SPLIT_TCP_UDP |
				  I40E_RX_SPLIT_SCTP;
		/* header length validation */
		if (info->hdr_size > ((2 * 1024) - 64)) {
			ret = -EINVAL;
			goto error_param;
		}
		rx_ctx.hbuff = info->hdr_size >> I40E_RXQ_CTX_HBUFF_SHIFT;

		/* set splitalways mode 10b */
		rx_ctx.dtype = 0x2;
	}

	/* databuffer length validation */
	if (info->databuffer_size > ((16 * 1024) - 128)) {
		ret = -EINVAL;
		goto error_param;
	}
	rx_ctx.dbuff = info->databuffer_size >> I40E_RXQ_CTX_DBUFF_SHIFT;

	/* max pkt. length validation */
	if (info->max_pkt_size >= (16 * 1024) || info->max_pkt_size < 64) {
		ret = -EINVAL;
		goto error_param;
	}
	rx_ctx.rxmax = info->max_pkt_size;

	/* enable 32bytes desc always */
	rx_ctx.dsize = 1;

	/* default values */
	rx_ctx.tphrdesc_ena = 1;
	rx_ctx.tphwdesc_ena = 1;
	rx_ctx.tphdata_ena = 1;
	rx_ctx.tphhead_ena = 1;
	rx_ctx.lrxqthresh = 2;
	rx_ctx.crcstrip = 1;

	/* clear the context in the HMC */
	ret = i40e_clear_lan_rx_queue_context(hw, pf_queue_id);
	if (ret) {
		dev_err(&pf->pdev->dev,
			"Failed to clear VF LAN Rx queue context %d, error: %d\n",
			pf_queue_id, ret);
		ret = -ENOENT;
		goto error_param;
	}

	/* set the context in the HMC */
	ret = i40e_set_lan_rx_queue_context(hw, pf_queue_id, &rx_ctx);
	if (ret) {
		dev_err(&pf->pdev->dev,
			"Failed to set VF LAN Rx queue context %d error: %d\n",
			pf_queue_id, ret);
		ret = -ENOENT;
		goto error_param;
	}

error_param:
	return ret;
}

/**
 * i40e_alloc_vsi_res
 * @vf: pointer to the vf info
 * @type: type of VSI to allocate
 *
 * alloc vf vsi context & resources
 **/
static int i40e_alloc_vsi_res(struct i40e_vf *vf, enum i40e_vsi_type type)
{
	struct i40e_mac_filter *f = NULL;
	struct i40e_pf *pf = vf->pf;
	struct i40e_vsi *vsi;
	int ret = 0;

	vsi = i40e_vsi_setup(pf, type, pf->vsi[pf->lan_vsi]->seid, vf->vf_id);

	if (!vsi) {
		dev_err(&pf->pdev->dev,
			"add vsi failed for vf %d, aq_err %d\n",
			vf->vf_id, pf->hw.aq.asq_last_status);
		ret = -ENOENT;
		goto error_alloc_vsi_res;
	}
	if (type == I40E_VSI_SRIOV) {
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		u8 brdcast[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
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		vf->lan_vsi_index = vsi->idx;
		vf->lan_vsi_id = vsi->id;
		dev_info(&pf->pdev->dev,
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			 "VF %d assigned LAN VSI index %d, VSI id %d\n",
			 vf->vf_id, vsi->idx, vsi->id);
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		/* If the port VLAN has been configured and then the
		 * VF driver was removed then the VSI port VLAN
		 * configuration was destroyed.  Check if there is
		 * a port VLAN and restore the VSI configuration if
		 * needed.
		 */
		if (vf->port_vlan_id)
			i40e_vsi_add_pvid(vsi, vf->port_vlan_id);
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		f = i40e_add_filter(vsi, vf->default_lan_addr.addr,
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				    vf->port_vlan_id, true, false);
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		if (!f)
			dev_info(&pf->pdev->dev,
				 "Could not allocate VF MAC addr\n");
		f = i40e_add_filter(vsi, brdcast, vf->port_vlan_id,
				    true, false);
		if (!f)
			dev_info(&pf->pdev->dev,
				 "Could not allocate VF broadcast filter\n");
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	}
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	/* program mac filter */
	ret = i40e_sync_vsi_filters(vsi);
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	if (ret)
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		dev_err(&pf->pdev->dev, "Unable to program ucast filters\n");

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	/* Set VF bandwidth if specified */
	if (vf->tx_rate) {
		ret = i40e_aq_config_vsi_bw_limit(&pf->hw, vsi->seid,
						  vf->tx_rate / 50, 0, NULL);
		if (ret)
			dev_err(&pf->pdev->dev, "Unable to set tx rate, VF %d, error code %d.\n",
				vf->vf_id, ret);
	}

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error_alloc_vsi_res:
	return ret;
}

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/**
 * i40e_enable_vf_mappings
 * @vf: pointer to the vf info
 *
 * enable vf mappings
 **/
static void i40e_enable_vf_mappings(struct i40e_vf *vf)
{
	struct i40e_pf *pf = vf->pf;
	struct i40e_hw *hw = &pf->hw;
	u32 reg, total_queue_pairs = 0;
	int j;

	/* Tell the hardware we're using noncontiguous mapping. HW requires
	 * that VF queues be mapped using this method, even when they are
	 * contiguous in real life
	 */
	wr32(hw, I40E_VSILAN_QBASE(vf->lan_vsi_id),
	     I40E_VSILAN_QBASE_VSIQTABLE_ENA_MASK);

	/* enable VF vplan_qtable mappings */
	reg = I40E_VPLAN_MAPENA_TXRX_ENA_MASK;
	wr32(hw, I40E_VPLAN_MAPENA(vf->vf_id), reg);

	/* map PF queues to VF queues */
	for (j = 0; j < pf->vsi[vf->lan_vsi_index]->num_queue_pairs; j++) {
		u16 qid = i40e_vc_get_pf_queue_id(vf, vf->lan_vsi_index, j);
		reg = (qid & I40E_VPLAN_QTABLE_QINDEX_MASK);
		wr32(hw, I40E_VPLAN_QTABLE(total_queue_pairs, vf->vf_id), reg);
		total_queue_pairs++;
	}

	/* map PF queues to VSI */
	for (j = 0; j < 7; j++) {
		if (j * 2 >= pf->vsi[vf->lan_vsi_index]->num_queue_pairs) {
			reg = 0x07FF07FF;	/* unused */
		} else {
			u16 qid = i40e_vc_get_pf_queue_id(vf, vf->lan_vsi_index,
							  j * 2);
			reg = qid;
			qid = i40e_vc_get_pf_queue_id(vf, vf->lan_vsi_index,
						      (j * 2) + 1);
			reg |= qid << 16;
		}
		wr32(hw, I40E_VSILAN_QTABLE(j, vf->lan_vsi_id), reg);
	}

	i40e_flush(hw);
}

/**
 * i40e_disable_vf_mappings
 * @vf: pointer to the vf info
 *
 * disable vf mappings
 **/
static void i40e_disable_vf_mappings(struct i40e_vf *vf)
{
	struct i40e_pf *pf = vf->pf;
	struct i40e_hw *hw = &pf->hw;
	int i;

	/* disable qp mappings */
	wr32(hw, I40E_VPLAN_MAPENA(vf->vf_id), 0);
	for (i = 0; i < I40E_MAX_VSI_QP; i++)
		wr32(hw, I40E_VPLAN_QTABLE(i, vf->vf_id),
		     I40E_QUEUE_END_OF_LIST);
	i40e_flush(hw);
}

/**
 * i40e_free_vf_res
 * @vf: pointer to the vf info
 *
 * free vf resources
 **/
static void i40e_free_vf_res(struct i40e_vf *vf)
{
	struct i40e_pf *pf = vf->pf;
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	struct i40e_hw *hw = &pf->hw;
	u32 reg_idx, reg;
	int i, msix_vf;
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	/* free vsi & disconnect it from the parent uplink */
	if (vf->lan_vsi_index) {
		i40e_vsi_release(pf->vsi[vf->lan_vsi_index]);
		vf->lan_vsi_index = 0;
		vf->lan_vsi_id = 0;
	}
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	msix_vf = pf->hw.func_caps.num_msix_vectors_vf;

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	/* disable interrupts so the VF starts in a known state */
	for (i = 0; i < msix_vf; i++) {
		/* format is same for both registers */
		if (0 == i)
			reg_idx = I40E_VFINT_DYN_CTL0(vf->vf_id);
		else
			reg_idx = I40E_VFINT_DYN_CTLN(((msix_vf - 1) *
						      (vf->vf_id))
						     + (i - 1));
		wr32(hw, reg_idx, I40E_VFINT_DYN_CTLN_CLEARPBA_MASK);
		i40e_flush(hw);
	}
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	/* clear the irq settings */
	for (i = 0; i < msix_vf; i++) {
		/* format is same for both registers */
		if (0 == i)
			reg_idx = I40E_VPINT_LNKLST0(vf->vf_id);
		else
			reg_idx = I40E_VPINT_LNKLSTN(((msix_vf - 1) *
						      (vf->vf_id))
						     + (i - 1));
		reg = (I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_MASK |
		       I40E_VPINT_LNKLSTN_FIRSTQ_INDX_MASK);
		wr32(hw, reg_idx, reg);
		i40e_flush(hw);
	}
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	/* reset some of the state varibles keeping
	 * track of the resources
	 */
	vf->num_queue_pairs = 0;
	vf->vf_states = 0;
}

/**
 * i40e_alloc_vf_res
 * @vf: pointer to the vf info
 *
 * allocate vf resources
 **/
static int i40e_alloc_vf_res(struct i40e_vf *vf)
{
	struct i40e_pf *pf = vf->pf;
	int total_queue_pairs = 0;
	int ret;

	/* allocate hw vsi context & associated resources */
	ret = i40e_alloc_vsi_res(vf, I40E_VSI_SRIOV);
	if (ret)
		goto error_alloc;
	total_queue_pairs += pf->vsi[vf->lan_vsi_index]->num_queue_pairs;
	set_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps);

	/* store the total qps number for the runtime
	 * vf req validation
	 */
	vf->num_queue_pairs = total_queue_pairs;

	/* vf is now completely initialized */
	set_bit(I40E_VF_STAT_INIT, &vf->vf_states);

error_alloc:
	if (ret)
		i40e_free_vf_res(vf);

	return ret;
}

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#define VF_DEVICE_STATUS 0xAA
#define VF_TRANS_PENDING_MASK 0x20
/**
 * i40e_quiesce_vf_pci
 * @vf: pointer to the vf structure
 *
 * Wait for VF PCI transactions to be cleared after reset. Returns -EIO
 * if the transactions never clear.
 **/
static int i40e_quiesce_vf_pci(struct i40e_vf *vf)
{
	struct i40e_pf *pf = vf->pf;
	struct i40e_hw *hw = &pf->hw;
	int vf_abs_id, i;
	u32 reg;

625
	vf_abs_id = vf->vf_id + hw->func_caps.vf_base_id;
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	wr32(hw, I40E_PF_PCI_CIAA,
	     VF_DEVICE_STATUS | (vf_abs_id << I40E_PF_PCI_CIAA_VF_NUM_SHIFT));
	for (i = 0; i < 100; i++) {
		reg = rd32(hw, I40E_PF_PCI_CIAD);
		if ((reg & VF_TRANS_PENDING_MASK) == 0)
			return 0;
		udelay(1);
	}
	return -EIO;
}

638 639 640 641 642 643 644
/**
 * i40e_reset_vf
 * @vf: pointer to the vf structure
 * @flr: VFLR was issued or not
 *
 * reset the vf
 **/
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void i40e_reset_vf(struct i40e_vf *vf, bool flr)
646 647 648 649
{
	struct i40e_pf *pf = vf->pf;
	struct i40e_hw *hw = &pf->hw;
	bool rsd = false;
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	int i;
	u32 reg;
652 653 654 655

	/* warn the VF */
	clear_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states);

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	/* In the case of a VFLR, the HW has already reset the VF and we
	 * just need to clean up, so don't hit the VFRTRIG register.
658 659 660
	 */
	if (!flr) {
		/* reset vf using VPGEN_VFRTRIG reg */
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		reg = rd32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id));
		reg |= I40E_VPGEN_VFRTRIG_VFSWR_MASK;
663 664 665 666
		wr32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id), reg);
		i40e_flush(hw);
	}

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	if (i40e_quiesce_vf_pci(vf))
		dev_err(&pf->pdev->dev, "VF %d PCI transactions stuck\n",
			vf->vf_id);

671 672 673
	/* poll VPGEN_VFRSTAT reg to make sure
	 * that reset is complete
	 */
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	for (i = 0; i < 100; i++) {
675 676 677 678 679 680 681 682 683 684 685 686 687 688
		/* vf reset requires driver to first reset the
		 * vf & than poll the status register to make sure
		 * that the requested op was completed
		 * successfully
		 */
		udelay(10);
		reg = rd32(hw, I40E_VPGEN_VFRSTAT(vf->vf_id));
		if (reg & I40E_VPGEN_VFRSTAT_VFRD_MASK) {
			rsd = true;
			break;
		}
	}

	if (!rsd)
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		dev_err(&pf->pdev->dev, "VF reset check timeout on VF %d\n",
690
			vf->vf_id);
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	wr32(hw, I40E_VFGEN_RSTAT1(vf->vf_id), I40E_VFR_COMPLETED);
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	/* clear the reset bit in the VPGEN_VFRTRIG reg */
	reg = rd32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id));
	reg &= ~I40E_VPGEN_VFRTRIG_VFSWR_MASK;
	wr32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id), reg);
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	/* On initial reset, we won't have any queues */
	if (vf->lan_vsi_index == 0)
		goto complete_reset;

	i40e_vsi_control_rings(pf->vsi[vf->lan_vsi_index], false);
complete_reset:
	/* reallocate vf resources to reset the VSI state */
	i40e_free_vf_res(vf);
	i40e_alloc_vf_res(vf);
	i40e_enable_vf_mappings(vf);
707
	set_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states);
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709
	/* tell the VF the reset is done */
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	wr32(hw, I40E_VFGEN_RSTAT1(vf->vf_id), I40E_VFR_VFACTIVE);
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	i40e_flush(hw);
}

/**
 * i40e_vfs_are_assigned
 * @pf: pointer to the pf structure
 *
 * Determine if any VFs are assigned to VMs
 **/
static bool i40e_vfs_are_assigned(struct i40e_pf *pf)
{
	struct pci_dev *pdev = pf->pdev;
	struct pci_dev *vfdev;

	/* loop through all the VFs to see if we own any that are assigned */
726
	vfdev = pci_get_device(PCI_VENDOR_ID_INTEL, I40E_DEV_ID_VF , NULL);
727 728 729 730 731 732 733 734 735
	while (vfdev) {
		/* if we don't own it we don't care */
		if (vfdev->is_virtfn && pci_physfn(vfdev) == pdev) {
			/* if it is assigned we cannot release it */
			if (vfdev->dev_flags & PCI_DEV_FLAGS_ASSIGNED)
				return true;
		}

		vfdev = pci_get_device(PCI_VENDOR_ID_INTEL,
736
				       I40E_DEV_ID_VF,
737 738 739 740 741
				       vfdev);
	}

	return false;
}
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#ifdef CONFIG_PCI_IOV

/**
 * i40e_enable_pf_switch_lb
 * @pf: pointer to the pf structure
 *
 * enable switch loop back or die - no point in a return value
 **/
static void i40e_enable_pf_switch_lb(struct i40e_pf *pf)
{
	struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
	struct i40e_vsi_context ctxt;
	int aq_ret;

	ctxt.seid = pf->main_vsi_seid;
	ctxt.pf_num = pf->hw.pf_id;
	ctxt.vf_num = 0;
	aq_ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
	if (aq_ret) {
		dev_info(&pf->pdev->dev,
			 "%s couldn't get pf vsi config, err %d, aq_err %d\n",
			 __func__, aq_ret, pf->hw.aq.asq_last_status);
		return;
	}
	ctxt.flags = I40E_AQ_VSI_TYPE_PF;
	ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
	ctxt.info.switch_id |= cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);

	aq_ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
	if (aq_ret) {
		dev_info(&pf->pdev->dev,
			 "%s: update vsi switch failed, aq_err=%d\n",
			 __func__, vsi->back->hw.aq.asq_last_status);
	}
}
#endif

/**
 * i40e_disable_pf_switch_lb
 * @pf: pointer to the pf structure
 *
 * disable switch loop back or die - no point in a return value
 **/
static void i40e_disable_pf_switch_lb(struct i40e_pf *pf)
{
	struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
	struct i40e_vsi_context ctxt;
	int aq_ret;

	ctxt.seid = pf->main_vsi_seid;
	ctxt.pf_num = pf->hw.pf_id;
	ctxt.vf_num = 0;
	aq_ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
	if (aq_ret) {
		dev_info(&pf->pdev->dev,
			 "%s couldn't get pf vsi config, err %d, aq_err %d\n",
			 __func__, aq_ret, pf->hw.aq.asq_last_status);
		return;
	}
	ctxt.flags = I40E_AQ_VSI_TYPE_PF;
	ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
	ctxt.info.switch_id &= ~cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);

	aq_ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
	if (aq_ret) {
		dev_info(&pf->pdev->dev,
			 "%s: update vsi switch failed, aq_err=%d\n",
			 __func__, vsi->back->hw.aq.asq_last_status);
	}
}
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/**
 * i40e_free_vfs
 * @pf: pointer to the pf structure
 *
 * free vf resources
 **/
void i40e_free_vfs(struct i40e_pf *pf)
{
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	struct i40e_hw *hw = &pf->hw;
	u32 reg_idx, bit_idx;
	int i, tmp, vf_id;
824 825 826 827 828

	if (!pf->vf)
		return;

	/* Disable interrupt 0 so we don't try to handle the VFLR. */
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	i40e_irq_dynamic_disable_icr0(pf);

831
	mdelay(10); /* let any messages in transit get finished up */
832
	/* free up vf resources */
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	tmp = pf->num_alloc_vfs;
	pf->num_alloc_vfs = 0;
	for (i = 0; i < tmp; i++) {
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		if (test_bit(I40E_VF_STAT_INIT, &pf->vf[i].vf_states))
			i40e_free_vf_res(&pf->vf[i]);
		/* disable qp mappings */
		i40e_disable_vf_mappings(&pf->vf[i]);
	}

	kfree(pf->vf);
	pf->vf = NULL;

845
	if (!i40e_vfs_are_assigned(pf)) {
846
		pci_disable_sriov(pf->pdev);
847 848 849 850 851 852 853 854
		/* Acknowledge VFLR for all VFS. Without this, VFs will fail to
		 * work correctly when SR-IOV gets re-enabled.
		 */
		for (vf_id = 0; vf_id < tmp; vf_id++) {
			reg_idx = (hw->func_caps.vf_base_id + vf_id) / 32;
			bit_idx = (hw->func_caps.vf_base_id + vf_id) % 32;
			wr32(hw, I40E_GLGEN_VFLRSTAT(reg_idx), (1 << bit_idx));
		}
855 856
		i40e_disable_pf_switch_lb(pf);
	} else {
857 858
		dev_warn(&pf->pdev->dev,
			 "unable to disable SR-IOV because VFs are assigned.\n");
859
	}
860 861

	/* Re-enable interrupt 0. */
862
	i40e_irq_dynamic_enable_icr0(pf);
863 864 865 866 867 868 869 870 871 872
}

#ifdef CONFIG_PCI_IOV
/**
 * i40e_alloc_vfs
 * @pf: pointer to the pf structure
 * @num_alloc_vfs: number of vfs to allocate
 *
 * allocate vf resources
 **/
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int i40e_alloc_vfs(struct i40e_pf *pf, u16 num_alloc_vfs)
874 875 876 877
{
	struct i40e_vf *vfs;
	int i, ret = 0;

878
	/* Disable interrupt 0 so we don't try to handle the VFLR. */
879 880
	i40e_irq_dynamic_disable_icr0(pf);

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	/* 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;
		}
890 891
	}
	/* allocate memory */
892
	vfs = kcalloc(num_alloc_vfs, sizeof(struct i40e_vf), GFP_KERNEL);
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	if (!vfs) {
		ret = -ENOMEM;
		goto err_alloc;
	}

	/* apply default profile */
	for (i = 0; i < num_alloc_vfs; i++) {
		vfs[i].pf = pf;
		vfs[i].parent_type = I40E_SWITCH_ELEMENT_TYPE_VEB;
		vfs[i].vf_id = i;

		/* assign default capabilities */
		set_bit(I40E_VIRTCHNL_VF_CAP_L2, &vfs[i].vf_caps);
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		/* vf resources get allocated during reset */
		i40e_reset_vf(&vfs[i], false);
908 909 910 911 912 913 914

		/* enable vf vplan_qtable mappings */
		i40e_enable_vf_mappings(&vfs[i]);
	}
	pf->vf = vfs;
	pf->num_alloc_vfs = num_alloc_vfs;

915
	i40e_enable_pf_switch_lb(pf);
916 917 918 919
err_alloc:
	if (ret)
		i40e_free_vfs(pf);
err_iov:
920
	/* Re-enable interrupt 0. */
921
	i40e_irq_dynamic_enable_icr0(pf);
922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001
	return ret;
}

#endif
/**
 * i40e_pci_sriov_enable
 * @pdev: pointer to a pci_dev structure
 * @num_vfs: number of vfs to allocate
 *
 * Enable or change the number of VFs
 **/
static int i40e_pci_sriov_enable(struct pci_dev *pdev, int num_vfs)
{
#ifdef CONFIG_PCI_IOV
	struct i40e_pf *pf = pci_get_drvdata(pdev);
	int pre_existing_vfs = pci_num_vf(pdev);
	int err = 0;

	dev_info(&pdev->dev, "Allocating %d VFs.\n", num_vfs);
	if (pre_existing_vfs && pre_existing_vfs != num_vfs)
		i40e_free_vfs(pf);
	else if (pre_existing_vfs && pre_existing_vfs == num_vfs)
		goto out;

	if (num_vfs > pf->num_req_vfs) {
		err = -EPERM;
		goto err_out;
	}

	err = i40e_alloc_vfs(pf, num_vfs);
	if (err) {
		dev_warn(&pdev->dev, "Failed to enable SR-IOV: %d\n", err);
		goto err_out;
	}

out:
	return num_vfs;

err_out:
	return err;
#endif
	return 0;
}

/**
 * i40e_pci_sriov_configure
 * @pdev: pointer to a pci_dev structure
 * @num_vfs: number of vfs to allocate
 *
 * Enable or change the number of VFs. Called when the user updates the number
 * of VFs in sysfs.
 **/
int i40e_pci_sriov_configure(struct pci_dev *pdev, int num_vfs)
{
	struct i40e_pf *pf = pci_get_drvdata(pdev);

	if (num_vfs)
		return i40e_pci_sriov_enable(pdev, num_vfs);

	i40e_free_vfs(pf);
	return 0;
}

/***********************virtual channel routines******************/

/**
 * i40e_vc_send_msg_to_vf
 * @vf: pointer to the vf info
 * @v_opcode: virtual channel opcode
 * @v_retval: virtual channel return value
 * @msg: pointer to the msg buffer
 * @msglen: msg length
 *
 * send msg to vf
 **/
static int i40e_vc_send_msg_to_vf(struct i40e_vf *vf, u32 v_opcode,
				  u32 v_retval, u8 *msg, u16 msglen)
{
	struct i40e_pf *pf = vf->pf;
	struct i40e_hw *hw = &pf->hw;
1002
	int true_vf_id = vf->vf_id + hw->func_caps.vf_base_id;
1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021
	i40e_status aq_ret;

	/* single place to detect unsuccessful return values */
	if (v_retval) {
		vf->num_invalid_msgs++;
		dev_err(&pf->pdev->dev, "Failed opcode %d Error: %d\n",
			v_opcode, v_retval);
		if (vf->num_invalid_msgs >
		    I40E_DEFAULT_NUM_INVALID_MSGS_ALLOWED) {
			dev_err(&pf->pdev->dev,
				"Number of invalid messages exceeded for VF %d\n",
				vf->vf_id);
			dev_err(&pf->pdev->dev, "Use PF Control I/F to enable the VF\n");
			set_bit(I40E_VF_STAT_DISABLED, &vf->vf_states);
		}
	} else {
		vf->num_valid_msgs++;
	}

1022 1023
	aq_ret = i40e_aq_send_msg_to_vf(hw, true_vf_id,	v_opcode, v_retval,
					msg, msglen, NULL);
1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137
	if (aq_ret) {
		dev_err(&pf->pdev->dev,
			"Unable to send the message to VF %d aq_err %d\n",
			vf->vf_id, pf->hw.aq.asq_last_status);
		return -EIO;
	}

	return 0;
}

/**
 * i40e_vc_send_resp_to_vf
 * @vf: pointer to the vf info
 * @opcode: operation code
 * @retval: return value
 *
 * send resp msg to vf
 **/
static int i40e_vc_send_resp_to_vf(struct i40e_vf *vf,
				   enum i40e_virtchnl_ops opcode,
				   i40e_status retval)
{
	return i40e_vc_send_msg_to_vf(vf, opcode, retval, NULL, 0);
}

/**
 * i40e_vc_get_version_msg
 * @vf: pointer to the vf info
 *
 * called from the vf to request the API version used by the PF
 **/
static int i40e_vc_get_version_msg(struct i40e_vf *vf)
{
	struct i40e_virtchnl_version_info info = {
		I40E_VIRTCHNL_VERSION_MAJOR, I40E_VIRTCHNL_VERSION_MINOR
	};

	return i40e_vc_send_msg_to_vf(vf, I40E_VIRTCHNL_OP_VERSION,
				      I40E_SUCCESS, (u8 *)&info,
				      sizeof(struct
					     i40e_virtchnl_version_info));
}

/**
 * i40e_vc_get_vf_resources_msg
 * @vf: pointer to the vf info
 * @msg: pointer to the msg buffer
 * @msglen: msg length
 *
 * called from the vf to request its resources
 **/
static int i40e_vc_get_vf_resources_msg(struct i40e_vf *vf)
{
	struct i40e_virtchnl_vf_resource *vfres = NULL;
	struct i40e_pf *pf = vf->pf;
	i40e_status aq_ret = 0;
	struct i40e_vsi *vsi;
	int i = 0, len = 0;
	int num_vsis = 1;
	int ret;

	if (!test_bit(I40E_VF_STAT_INIT, &vf->vf_states)) {
		aq_ret = I40E_ERR_PARAM;
		goto err;
	}

	len = (sizeof(struct i40e_virtchnl_vf_resource) +
	       sizeof(struct i40e_virtchnl_vsi_resource) * num_vsis);

	vfres = kzalloc(len, GFP_KERNEL);
	if (!vfres) {
		aq_ret = I40E_ERR_NO_MEMORY;
		len = 0;
		goto err;
	}

	vfres->vf_offload_flags = I40E_VIRTCHNL_VF_OFFLOAD_L2;
	vsi = pf->vsi[vf->lan_vsi_index];
	if (!vsi->info.pvid)
		vfres->vf_offload_flags |= I40E_VIRTCHNL_VF_OFFLOAD_VLAN;

	vfres->num_vsis = num_vsis;
	vfres->num_queue_pairs = vf->num_queue_pairs;
	vfres->max_vectors = pf->hw.func_caps.num_msix_vectors_vf;
	if (vf->lan_vsi_index) {
		vfres->vsi_res[i].vsi_id = vf->lan_vsi_index;
		vfres->vsi_res[i].vsi_type = I40E_VSI_SRIOV;
		vfres->vsi_res[i].num_queue_pairs =
		    pf->vsi[vf->lan_vsi_index]->num_queue_pairs;
		memcpy(vfres->vsi_res[i].default_mac_addr,
		       vf->default_lan_addr.addr, ETH_ALEN);
		i++;
	}
	set_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states);

err:
	/* send the response back to the vf */
	ret = i40e_vc_send_msg_to_vf(vf, I40E_VIRTCHNL_OP_GET_VF_RESOURCES,
				     aq_ret, (u8 *)vfres, len);

	kfree(vfres);
	return ret;
}

/**
 * i40e_vc_reset_vf_msg
 * @vf: pointer to the vf info
 * @msg: pointer to the msg buffer
 * @msglen: msg length
 *
 * called from the vf to reset itself,
 * unlike other virtchnl messages, pf driver
 * doesn't send the response back to the vf
 **/
M
Mitch Williams 已提交
1138
static void i40e_vc_reset_vf_msg(struct i40e_vf *vf)
1139
{
M
Mitch Williams 已提交
1140 1141
	if (test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states))
		i40e_reset_vf(vf, false);
1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282
}

/**
 * i40e_vc_config_promiscuous_mode_msg
 * @vf: pointer to the vf info
 * @msg: pointer to the msg buffer
 * @msglen: msg length
 *
 * called from the vf to configure the promiscuous mode of
 * vf vsis
 **/
static int i40e_vc_config_promiscuous_mode_msg(struct i40e_vf *vf,
					       u8 *msg, u16 msglen)
{
	struct i40e_virtchnl_promisc_info *info =
	    (struct i40e_virtchnl_promisc_info *)msg;
	struct i40e_pf *pf = vf->pf;
	struct i40e_hw *hw = &pf->hw;
	bool allmulti = false;
	bool promisc = false;
	i40e_status aq_ret;

	if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states) ||
	    !test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps) ||
	    !i40e_vc_isvalid_vsi_id(vf, info->vsi_id) ||
	    (pf->vsi[info->vsi_id]->type != I40E_VSI_FCOE)) {
		aq_ret = I40E_ERR_PARAM;
		goto error_param;
	}

	if (info->flags & I40E_FLAG_VF_UNICAST_PROMISC)
		promisc = true;
	aq_ret = i40e_aq_set_vsi_unicast_promiscuous(hw, info->vsi_id,
						     promisc, NULL);
	if (aq_ret)
		goto error_param;

	if (info->flags & I40E_FLAG_VF_MULTICAST_PROMISC)
		allmulti = true;
	aq_ret = i40e_aq_set_vsi_multicast_promiscuous(hw, info->vsi_id,
						       allmulti, NULL);

error_param:
	/* send the response to the vf */
	return i40e_vc_send_resp_to_vf(vf,
				       I40E_VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE,
				       aq_ret);
}

/**
 * i40e_vc_config_queues_msg
 * @vf: pointer to the vf info
 * @msg: pointer to the msg buffer
 * @msglen: msg length
 *
 * called from the vf to configure the rx/tx
 * queues
 **/
static int i40e_vc_config_queues_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
{
	struct i40e_virtchnl_vsi_queue_config_info *qci =
	    (struct i40e_virtchnl_vsi_queue_config_info *)msg;
	struct i40e_virtchnl_queue_pair_info *qpi;
	u16 vsi_id, vsi_queue_id;
	i40e_status aq_ret = 0;
	int i;

	if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states)) {
		aq_ret = I40E_ERR_PARAM;
		goto error_param;
	}

	vsi_id = qci->vsi_id;
	if (!i40e_vc_isvalid_vsi_id(vf, vsi_id)) {
		aq_ret = I40E_ERR_PARAM;
		goto error_param;
	}
	for (i = 0; i < qci->num_queue_pairs; i++) {
		qpi = &qci->qpair[i];
		vsi_queue_id = qpi->txq.queue_id;
		if ((qpi->txq.vsi_id != vsi_id) ||
		    (qpi->rxq.vsi_id != vsi_id) ||
		    (qpi->rxq.queue_id != vsi_queue_id) ||
		    !i40e_vc_isvalid_queue_id(vf, vsi_id, vsi_queue_id)) {
			aq_ret = I40E_ERR_PARAM;
			goto error_param;
		}

		if (i40e_config_vsi_rx_queue(vf, vsi_id, vsi_queue_id,
					     &qpi->rxq) ||
		    i40e_config_vsi_tx_queue(vf, vsi_id, vsi_queue_id,
					     &qpi->txq)) {
			aq_ret = I40E_ERR_PARAM;
			goto error_param;
		}
	}

error_param:
	/* send the response to the vf */
	return i40e_vc_send_resp_to_vf(vf, I40E_VIRTCHNL_OP_CONFIG_VSI_QUEUES,
				       aq_ret);
}

/**
 * i40e_vc_config_irq_map_msg
 * @vf: pointer to the vf info
 * @msg: pointer to the msg buffer
 * @msglen: msg length
 *
 * called from the vf to configure the irq to
 * queue map
 **/
static int i40e_vc_config_irq_map_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
{
	struct i40e_virtchnl_irq_map_info *irqmap_info =
	    (struct i40e_virtchnl_irq_map_info *)msg;
	struct i40e_virtchnl_vector_map *map;
	u16 vsi_id, vsi_queue_id, vector_id;
	i40e_status aq_ret = 0;
	unsigned long tempmap;
	int i;

	if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states)) {
		aq_ret = I40E_ERR_PARAM;
		goto error_param;
	}

	for (i = 0; i < irqmap_info->num_vectors; i++) {
		map = &irqmap_info->vecmap[i];

		vector_id = map->vector_id;
		vsi_id = map->vsi_id;
		/* validate msg params */
		if (!i40e_vc_isvalid_vector_id(vf, vector_id) ||
		    !i40e_vc_isvalid_vsi_id(vf, vsi_id)) {
			aq_ret = I40E_ERR_PARAM;
			goto error_param;
		}

		/* lookout for the invalid queue index */
		tempmap = map->rxq_map;
1283
		for_each_set_bit(vsi_queue_id, &tempmap, I40E_MAX_VSI_QP) {
1284 1285 1286 1287 1288 1289 1290 1291
			if (!i40e_vc_isvalid_queue_id(vf, vsi_id,
						      vsi_queue_id)) {
				aq_ret = I40E_ERR_PARAM;
				goto error_param;
			}
		}

		tempmap = map->txq_map;
1292
		for_each_set_bit(vsi_queue_id, &tempmap, I40E_MAX_VSI_QP) {
1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337
			if (!i40e_vc_isvalid_queue_id(vf, vsi_id,
						      vsi_queue_id)) {
				aq_ret = I40E_ERR_PARAM;
				goto error_param;
			}
		}

		i40e_config_irq_link_list(vf, vsi_id, map);
	}
error_param:
	/* send the response to the vf */
	return i40e_vc_send_resp_to_vf(vf, I40E_VIRTCHNL_OP_CONFIG_IRQ_MAP,
				       aq_ret);
}

/**
 * i40e_vc_enable_queues_msg
 * @vf: pointer to the vf info
 * @msg: pointer to the msg buffer
 * @msglen: msg length
 *
 * called from the vf to enable all or specific queue(s)
 **/
static int i40e_vc_enable_queues_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
{
	struct i40e_virtchnl_queue_select *vqs =
	    (struct i40e_virtchnl_queue_select *)msg;
	struct i40e_pf *pf = vf->pf;
	u16 vsi_id = vqs->vsi_id;
	i40e_status aq_ret = 0;

	if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states)) {
		aq_ret = I40E_ERR_PARAM;
		goto error_param;
	}

	if (!i40e_vc_isvalid_vsi_id(vf, vsi_id)) {
		aq_ret = I40E_ERR_PARAM;
		goto error_param;
	}

	if ((0 == vqs->rx_queues) && (0 == vqs->tx_queues)) {
		aq_ret = I40E_ERR_PARAM;
		goto error_param;
	}
M
Mitch Williams 已提交
1338 1339
	if (i40e_vsi_control_rings(pf->vsi[vsi_id], true))
		aq_ret = I40E_ERR_TIMEOUT;
1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376
error_param:
	/* send the response to the vf */
	return i40e_vc_send_resp_to_vf(vf, I40E_VIRTCHNL_OP_ENABLE_QUEUES,
				       aq_ret);
}

/**
 * i40e_vc_disable_queues_msg
 * @vf: pointer to the vf info
 * @msg: pointer to the msg buffer
 * @msglen: msg length
 *
 * called from the vf to disable all or specific
 * queue(s)
 **/
static int i40e_vc_disable_queues_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
{
	struct i40e_virtchnl_queue_select *vqs =
	    (struct i40e_virtchnl_queue_select *)msg;
	struct i40e_pf *pf = vf->pf;
	u16 vsi_id = vqs->vsi_id;
	i40e_status aq_ret = 0;

	if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states)) {
		aq_ret = I40E_ERR_PARAM;
		goto error_param;
	}

	if (!i40e_vc_isvalid_vsi_id(vf, vqs->vsi_id)) {
		aq_ret = I40E_ERR_PARAM;
		goto error_param;
	}

	if ((0 == vqs->rx_queues) && (0 == vqs->tx_queues)) {
		aq_ret = I40E_ERR_PARAM;
		goto error_param;
	}
M
Mitch Williams 已提交
1377 1378
	if (i40e_vsi_control_rings(pf->vsi[vsi_id], false))
		aq_ret = I40E_ERR_TIMEOUT;
1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420

error_param:
	/* send the response to the vf */
	return i40e_vc_send_resp_to_vf(vf, I40E_VIRTCHNL_OP_DISABLE_QUEUES,
				       aq_ret);
}

/**
 * i40e_vc_get_stats_msg
 * @vf: pointer to the vf info
 * @msg: pointer to the msg buffer
 * @msglen: msg length
 *
 * called from the vf to get vsi stats
 **/
static int i40e_vc_get_stats_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
{
	struct i40e_virtchnl_queue_select *vqs =
	    (struct i40e_virtchnl_queue_select *)msg;
	struct i40e_pf *pf = vf->pf;
	struct i40e_eth_stats stats;
	i40e_status aq_ret = 0;
	struct i40e_vsi *vsi;

	memset(&stats, 0, sizeof(struct i40e_eth_stats));

	if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states)) {
		aq_ret = I40E_ERR_PARAM;
		goto error_param;
	}

	if (!i40e_vc_isvalid_vsi_id(vf, vqs->vsi_id)) {
		aq_ret = I40E_ERR_PARAM;
		goto error_param;
	}

	vsi = pf->vsi[vqs->vsi_id];
	if (!vsi) {
		aq_ret = I40E_ERR_PARAM;
		goto error_param;
	}
	i40e_update_eth_stats(vsi);
1421
	stats = vsi->eth_stats;
1422 1423 1424 1425 1426 1427 1428

error_param:
	/* send the response back to the vf */
	return i40e_vc_send_msg_to_vf(vf, I40E_VIRTCHNL_OP_GET_STATS, aq_ret,
				      (u8 *)&stats, sizeof(stats));
}

1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447
/**
 * i40e_check_vf_permission
 * @vf: pointer to the vf info
 * @macaddr: pointer to the MAC Address being checked
 *
 * Check if the VF has permission to add or delete unicast MAC address
 * filters and return error code -EPERM if not.  Then check if the
 * address filter requested is broadcast or zero and if so return
 * an invalid MAC address error code.
 **/
static inline int i40e_check_vf_permission(struct i40e_vf *vf, u8 *macaddr)
{
	struct i40e_pf *pf = vf->pf;
	int ret = 0;

	if (is_broadcast_ether_addr(macaddr) ||
		   is_zero_ether_addr(macaddr)) {
		dev_err(&pf->pdev->dev, "invalid VF MAC addr %pM\n", macaddr);
		ret = I40E_ERR_INVALID_MAC_ADDR;
1448 1449
	} else if (vf->pf_set_mac && !is_multicast_ether_addr(macaddr) &&
		   !ether_addr_equal(macaddr, vf->default_lan_addr.addr)) {
1450 1451 1452
		/* If the host VMM administrator has set the VF MAC address
		 * administratively via the ndo_set_vf_mac command then deny
		 * permission to the VF to add or delete unicast MAC addresses.
1453 1454
		 * The VF may request to set the MAC address filter already
		 * assigned to it so do not return an error in that case.
1455 1456 1457 1458 1459 1460 1461 1462
		 */
		dev_err(&pf->pdev->dev,
			"VF attempting to override administratively set MAC address\nPlease reload the VF driver to resume normal operation\n");
		ret = -EPERM;
	}
	return ret;
}

1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477
/**
 * i40e_vc_add_mac_addr_msg
 * @vf: pointer to the vf info
 * @msg: pointer to the msg buffer
 * @msglen: msg length
 *
 * add guest mac address filter
 **/
static int i40e_vc_add_mac_addr_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
{
	struct i40e_virtchnl_ether_addr_list *al =
	    (struct i40e_virtchnl_ether_addr_list *)msg;
	struct i40e_pf *pf = vf->pf;
	struct i40e_vsi *vsi = NULL;
	u16 vsi_id = al->vsi_id;
1478
	i40e_status ret = 0;
1479 1480 1481 1482 1483
	int i;

	if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states) ||
	    !test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps) ||
	    !i40e_vc_isvalid_vsi_id(vf, vsi_id)) {
1484
		ret = I40E_ERR_PARAM;
1485 1486 1487 1488
		goto error_param;
	}

	for (i = 0; i < al->num_elements; i++) {
1489 1490
		ret = i40e_check_vf_permission(vf, al->list[i].addr);
		if (ret)
1491 1492 1493 1494 1495 1496 1497 1498 1499
			goto error_param;
	}
	vsi = pf->vsi[vsi_id];

	/* add new addresses to the list */
	for (i = 0; i < al->num_elements; i++) {
		struct i40e_mac_filter *f;

		f = i40e_find_mac(vsi, al->list[i].addr, true, false);
1500
		if (!f) {
1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511
			if (i40e_is_vsi_in_vlan(vsi))
				f = i40e_put_mac_in_vlan(vsi, al->list[i].addr,
							 true, false);
			else
				f = i40e_add_filter(vsi, al->list[i].addr, -1,
						    true, false);
		}

		if (!f) {
			dev_err(&pf->pdev->dev,
				"Unable to add VF MAC filter\n");
1512
			ret = I40E_ERR_PARAM;
1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523
			goto error_param;
		}
	}

	/* program the updated filter list */
	if (i40e_sync_vsi_filters(vsi))
		dev_err(&pf->pdev->dev, "Unable to program VF MAC filters\n");

error_param:
	/* send the response to the vf */
	return i40e_vc_send_resp_to_vf(vf, I40E_VIRTCHNL_OP_ADD_ETHER_ADDRESS,
1524
				       ret);
1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541
}

/**
 * i40e_vc_del_mac_addr_msg
 * @vf: pointer to the vf info
 * @msg: pointer to the msg buffer
 * @msglen: msg length
 *
 * remove guest mac address filter
 **/
static int i40e_vc_del_mac_addr_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
{
	struct i40e_virtchnl_ether_addr_list *al =
	    (struct i40e_virtchnl_ether_addr_list *)msg;
	struct i40e_pf *pf = vf->pf;
	struct i40e_vsi *vsi = NULL;
	u16 vsi_id = al->vsi_id;
1542
	i40e_status ret = 0;
1543 1544 1545 1546 1547
	int i;

	if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states) ||
	    !test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps) ||
	    !i40e_vc_isvalid_vsi_id(vf, vsi_id)) {
1548
		ret = I40E_ERR_PARAM;
1549 1550
		goto error_param;
	}
1551 1552

	for (i = 0; i < al->num_elements; i++) {
1553 1554 1555 1556 1557
		if (is_broadcast_ether_addr(al->list[i].addr) ||
		    is_zero_ether_addr(al->list[i].addr)) {
			dev_err(&pf->pdev->dev, "invalid VF MAC addr %pM\n",
				al->list[i].addr);
			ret = I40E_ERR_INVALID_MAC_ADDR;
1558
			goto error_param;
1559
		}
1560
	}
1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574
	vsi = pf->vsi[vsi_id];

	/* delete addresses from the list */
	for (i = 0; i < al->num_elements; i++)
		i40e_del_filter(vsi, al->list[i].addr,
				I40E_VLAN_ANY, true, false);

	/* program the updated filter list */
	if (i40e_sync_vsi_filters(vsi))
		dev_err(&pf->pdev->dev, "Unable to program VF MAC filters\n");

error_param:
	/* send the response to the vf */
	return i40e_vc_send_resp_to_vf(vf, I40E_VIRTCHNL_OP_DEL_ETHER_ADDRESS,
1575
				       ret);
1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662 1663 1664 1665 1666 1667 1668 1669 1670 1671 1672 1673 1674 1675 1676 1677 1678 1679 1680 1681 1682 1683 1684 1685 1686 1687 1688 1689 1690 1691 1692 1693 1694 1695 1696 1697 1698 1699 1700 1701 1702 1703 1704 1705 1706 1707 1708 1709 1710 1711 1712 1713 1714 1715 1716 1717 1718 1719 1720 1721 1722 1723 1724 1725 1726 1727 1728 1729 1730 1731 1732 1733 1734 1735 1736 1737 1738 1739 1740 1741 1742 1743 1744 1745 1746 1747 1748 1749 1750 1751 1752 1753 1754 1755 1756 1757 1758 1759 1760 1761 1762 1763 1764 1765 1766 1767 1768 1769 1770 1771 1772 1773 1774 1775 1776 1777 1778 1779 1780 1781 1782 1783 1784 1785 1786 1787 1788 1789 1790 1791 1792 1793 1794 1795 1796 1797 1798 1799 1800 1801 1802 1803
}

/**
 * i40e_vc_add_vlan_msg
 * @vf: pointer to the vf info
 * @msg: pointer to the msg buffer
 * @msglen: msg length
 *
 * program guest vlan id
 **/
static int i40e_vc_add_vlan_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
{
	struct i40e_virtchnl_vlan_filter_list *vfl =
	    (struct i40e_virtchnl_vlan_filter_list *)msg;
	struct i40e_pf *pf = vf->pf;
	struct i40e_vsi *vsi = NULL;
	u16 vsi_id = vfl->vsi_id;
	i40e_status aq_ret = 0;
	int i;

	if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states) ||
	    !test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps) ||
	    !i40e_vc_isvalid_vsi_id(vf, vsi_id)) {
		aq_ret = I40E_ERR_PARAM;
		goto error_param;
	}

	for (i = 0; i < vfl->num_elements; i++) {
		if (vfl->vlan_id[i] > I40E_MAX_VLANID) {
			aq_ret = I40E_ERR_PARAM;
			dev_err(&pf->pdev->dev,
				"invalid VF VLAN id %d\n", vfl->vlan_id[i]);
			goto error_param;
		}
	}
	vsi = pf->vsi[vsi_id];
	if (vsi->info.pvid) {
		aq_ret = I40E_ERR_PARAM;
		goto error_param;
	}

	i40e_vlan_stripping_enable(vsi);
	for (i = 0; i < vfl->num_elements; i++) {
		/* add new VLAN filter */
		int ret = i40e_vsi_add_vlan(vsi, vfl->vlan_id[i]);
		if (ret)
			dev_err(&pf->pdev->dev,
				"Unable to add VF vlan filter %d, error %d\n",
				vfl->vlan_id[i], ret);
	}

error_param:
	/* send the response to the vf */
	return i40e_vc_send_resp_to_vf(vf, I40E_VIRTCHNL_OP_ADD_VLAN, aq_ret);
}

/**
 * i40e_vc_remove_vlan_msg
 * @vf: pointer to the vf info
 * @msg: pointer to the msg buffer
 * @msglen: msg length
 *
 * remove programmed guest vlan id
 **/
static int i40e_vc_remove_vlan_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
{
	struct i40e_virtchnl_vlan_filter_list *vfl =
	    (struct i40e_virtchnl_vlan_filter_list *)msg;
	struct i40e_pf *pf = vf->pf;
	struct i40e_vsi *vsi = NULL;
	u16 vsi_id = vfl->vsi_id;
	i40e_status aq_ret = 0;
	int i;

	if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states) ||
	    !test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps) ||
	    !i40e_vc_isvalid_vsi_id(vf, vsi_id)) {
		aq_ret = I40E_ERR_PARAM;
		goto error_param;
	}

	for (i = 0; i < vfl->num_elements; i++) {
		if (vfl->vlan_id[i] > I40E_MAX_VLANID) {
			aq_ret = I40E_ERR_PARAM;
			goto error_param;
		}
	}

	vsi = pf->vsi[vsi_id];
	if (vsi->info.pvid) {
		aq_ret = I40E_ERR_PARAM;
		goto error_param;
	}

	for (i = 0; i < vfl->num_elements; i++) {
		int ret = i40e_vsi_kill_vlan(vsi, vfl->vlan_id[i]);
		if (ret)
			dev_err(&pf->pdev->dev,
				"Unable to delete VF vlan filter %d, error %d\n",
				vfl->vlan_id[i], ret);
	}

error_param:
	/* send the response to the vf */
	return i40e_vc_send_resp_to_vf(vf, I40E_VIRTCHNL_OP_DEL_VLAN, aq_ret);
}

/**
 * i40e_vc_validate_vf_msg
 * @vf: pointer to the vf info
 * @msg: pointer to the msg buffer
 * @msglen: msg length
 * @msghndl: msg handle
 *
 * validate msg
 **/
static int i40e_vc_validate_vf_msg(struct i40e_vf *vf, u32 v_opcode,
				   u32 v_retval, u8 *msg, u16 msglen)
{
	bool err_msg_format = false;
	int valid_len;

	/* Check if VF is disabled. */
	if (test_bit(I40E_VF_STAT_DISABLED, &vf->vf_states))
		return I40E_ERR_PARAM;

	/* Validate message length. */
	switch (v_opcode) {
	case I40E_VIRTCHNL_OP_VERSION:
		valid_len = sizeof(struct i40e_virtchnl_version_info);
		break;
	case I40E_VIRTCHNL_OP_RESET_VF:
	case I40E_VIRTCHNL_OP_GET_VF_RESOURCES:
		valid_len = 0;
		break;
	case I40E_VIRTCHNL_OP_CONFIG_TX_QUEUE:
		valid_len = sizeof(struct i40e_virtchnl_txq_info);
		break;
	case I40E_VIRTCHNL_OP_CONFIG_RX_QUEUE:
		valid_len = sizeof(struct i40e_virtchnl_rxq_info);
		break;
	case I40E_VIRTCHNL_OP_CONFIG_VSI_QUEUES:
		valid_len = sizeof(struct i40e_virtchnl_vsi_queue_config_info);
		if (msglen >= valid_len) {
			struct i40e_virtchnl_vsi_queue_config_info *vqc =
			    (struct i40e_virtchnl_vsi_queue_config_info *)msg;
			valid_len += (vqc->num_queue_pairs *
				      sizeof(struct
					     i40e_virtchnl_queue_pair_info));
			if (vqc->num_queue_pairs == 0)
				err_msg_format = true;
		}
		break;
	case I40E_VIRTCHNL_OP_CONFIG_IRQ_MAP:
		valid_len = sizeof(struct i40e_virtchnl_irq_map_info);
		if (msglen >= valid_len) {
			struct i40e_virtchnl_irq_map_info *vimi =
			    (struct i40e_virtchnl_irq_map_info *)msg;
			valid_len += (vimi->num_vectors *
				      sizeof(struct i40e_virtchnl_vector_map));
			if (vimi->num_vectors == 0)
				err_msg_format = true;
		}
		break;
	case I40E_VIRTCHNL_OP_ENABLE_QUEUES:
	case I40E_VIRTCHNL_OP_DISABLE_QUEUES:
		valid_len = sizeof(struct i40e_virtchnl_queue_select);
		break;
	case I40E_VIRTCHNL_OP_ADD_ETHER_ADDRESS:
	case I40E_VIRTCHNL_OP_DEL_ETHER_ADDRESS:
		valid_len = sizeof(struct i40e_virtchnl_ether_addr_list);
		if (msglen >= valid_len) {
			struct i40e_virtchnl_ether_addr_list *veal =
			    (struct i40e_virtchnl_ether_addr_list *)msg;
			valid_len += veal->num_elements *
			    sizeof(struct i40e_virtchnl_ether_addr);
			if (veal->num_elements == 0)
				err_msg_format = true;
		}
		break;
	case I40E_VIRTCHNL_OP_ADD_VLAN:
	case I40E_VIRTCHNL_OP_DEL_VLAN:
		valid_len = sizeof(struct i40e_virtchnl_vlan_filter_list);
		if (msglen >= valid_len) {
			struct i40e_virtchnl_vlan_filter_list *vfl =
			    (struct i40e_virtchnl_vlan_filter_list *)msg;
			valid_len += vfl->num_elements * sizeof(u16);
			if (vfl->num_elements == 0)
				err_msg_format = true;
		}
		break;
	case I40E_VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE:
		valid_len = sizeof(struct i40e_virtchnl_promisc_info);
		break;
	case I40E_VIRTCHNL_OP_GET_STATS:
		valid_len = sizeof(struct i40e_virtchnl_queue_select);
		break;
	/* These are always errors coming from the VF. */
	case I40E_VIRTCHNL_OP_EVENT:
	case I40E_VIRTCHNL_OP_UNKNOWN:
	default:
		return -EPERM;
		break;
	}
	/* few more checks */
	if ((valid_len != msglen) || (err_msg_format)) {
		i40e_vc_send_resp_to_vf(vf, v_opcode, I40E_ERR_PARAM);
		return -EINVAL;
	} else {
		return 0;
	}
}

/**
 * i40e_vc_process_vf_msg
 * @pf: pointer to the pf structure
 * @vf_id: source vf id
 * @msg: pointer to the msg buffer
 * @msglen: msg length
 * @msghndl: msg handle
 *
 * called from the common aeq/arq handler to
 * process request from vf
 **/
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;
1804
	unsigned int local_vf_id = vf_id - hw->func_caps.vf_base_id;
1805
	struct i40e_vf *vf;
1806 1807 1808
	int ret;

	pf->vf_aq_requests++;
1809
	if (local_vf_id >= pf->num_alloc_vfs)
1810
		return -EINVAL;
1811
	vf = &(pf->vf[local_vf_id]);
1812 1813 1814 1815
	/* perform basic checks on the msg */
	ret = i40e_vc_validate_vf_msg(vf, v_opcode, v_retval, msg, msglen);

	if (ret) {
M
Mitch Williams 已提交
1816
		dev_err(&pf->pdev->dev, "Invalid message from vf %d, opcode %d, len %d\n",
1817
			local_vf_id, v_opcode, msglen);
1818 1819
		return ret;
	}
1820

1821 1822 1823 1824 1825 1826 1827 1828
	switch (v_opcode) {
	case I40E_VIRTCHNL_OP_VERSION:
		ret = i40e_vc_get_version_msg(vf);
		break;
	case I40E_VIRTCHNL_OP_GET_VF_RESOURCES:
		ret = i40e_vc_get_vf_resources_msg(vf);
		break;
	case I40E_VIRTCHNL_OP_RESET_VF:
M
Mitch Williams 已提交
1829 1830
		i40e_vc_reset_vf_msg(vf);
		ret = 0;
1831 1832 1833 1834 1835 1836 1837 1838 1839 1840 1841 1842 1843 1844 1845 1846 1847 1848 1849 1850 1851 1852 1853 1854 1855 1856 1857 1858 1859 1860 1861 1862 1863
		break;
	case I40E_VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE:
		ret = i40e_vc_config_promiscuous_mode_msg(vf, msg, msglen);
		break;
	case I40E_VIRTCHNL_OP_CONFIG_VSI_QUEUES:
		ret = i40e_vc_config_queues_msg(vf, msg, msglen);
		break;
	case I40E_VIRTCHNL_OP_CONFIG_IRQ_MAP:
		ret = i40e_vc_config_irq_map_msg(vf, msg, msglen);
		break;
	case I40E_VIRTCHNL_OP_ENABLE_QUEUES:
		ret = i40e_vc_enable_queues_msg(vf, msg, msglen);
		break;
	case I40E_VIRTCHNL_OP_DISABLE_QUEUES:
		ret = i40e_vc_disable_queues_msg(vf, msg, msglen);
		break;
	case I40E_VIRTCHNL_OP_ADD_ETHER_ADDRESS:
		ret = i40e_vc_add_mac_addr_msg(vf, msg, msglen);
		break;
	case I40E_VIRTCHNL_OP_DEL_ETHER_ADDRESS:
		ret = i40e_vc_del_mac_addr_msg(vf, msg, msglen);
		break;
	case I40E_VIRTCHNL_OP_ADD_VLAN:
		ret = i40e_vc_add_vlan_msg(vf, msg, msglen);
		break;
	case I40E_VIRTCHNL_OP_DEL_VLAN:
		ret = i40e_vc_remove_vlan_msg(vf, msg, msglen);
		break;
	case I40E_VIRTCHNL_OP_GET_STATS:
		ret = i40e_vc_get_stats_msg(vf, msg, msglen);
		break;
	case I40E_VIRTCHNL_OP_UNKNOWN:
	default:
1864 1865
		dev_err(&pf->pdev->dev, "Unsupported opcode %d from vf %d\n",
			v_opcode, local_vf_id);
1866 1867 1868 1869 1870 1871 1872 1873 1874 1875 1876 1877 1878 1879 1880 1881 1882 1883 1884 1885 1886 1887 1888 1889 1890 1891 1892 1893 1894 1895 1896 1897 1898 1899 1900
		ret = i40e_vc_send_resp_to_vf(vf, v_opcode,
					      I40E_ERR_NOT_IMPLEMENTED);
		break;
	}

	return ret;
}

/**
 * i40e_vc_process_vflr_event
 * @pf: pointer to the pf structure
 *
 * called from the vlfr irq handler to
 * free up vf resources and state variables
 **/
int i40e_vc_process_vflr_event(struct i40e_pf *pf)
{
	u32 reg, reg_idx, bit_idx, vf_id;
	struct i40e_hw *hw = &pf->hw;
	struct i40e_vf *vf;

	if (!test_bit(__I40E_VFLR_EVENT_PENDING, &pf->state))
		return 0;

	clear_bit(__I40E_VFLR_EVENT_PENDING, &pf->state);
	for (vf_id = 0; vf_id < pf->num_alloc_vfs; vf_id++) {
		reg_idx = (hw->func_caps.vf_base_id + vf_id) / 32;
		bit_idx = (hw->func_caps.vf_base_id + vf_id) % 32;
		/* read GLGEN_VFLRSTAT register to find out the flr vfs */
		vf = &pf->vf[vf_id];
		reg = rd32(hw, I40E_GLGEN_VFLRSTAT(reg_idx));
		if (reg & (1 << bit_idx)) {
			/* clear the bit in GLGEN_VFLRSTAT */
			wr32(hw, I40E_GLGEN_VFLRSTAT(reg_idx), (1 << bit_idx));

1901 1902
			if (!test_bit(__I40E_DOWN, &pf->state))
				i40e_reset_vf(vf, true);
1903 1904 1905 1906 1907 1908 1909 1910 1911 1912 1913 1914 1915 1916 1917 1918 1919 1920 1921 1922 1923 1924 1925 1926 1927 1928 1929 1930 1931 1932 1933 1934 1935 1936 1937 1938 1939 1940 1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952
		}
	}

	/* re-enable vflr interrupt cause */
	reg = rd32(hw, I40E_PFINT_ICR0_ENA);
	reg |= I40E_PFINT_ICR0_ENA_VFLR_MASK;
	wr32(hw, I40E_PFINT_ICR0_ENA, reg);
	i40e_flush(hw);

	return 0;
}

/**
 * i40e_vc_vf_broadcast
 * @pf: pointer to the pf structure
 * @opcode: operation code
 * @retval: return value
 * @msg: pointer to the msg buffer
 * @msglen: msg length
 *
 * send a message to all VFs on a given PF
 **/
static void i40e_vc_vf_broadcast(struct i40e_pf *pf,
				 enum i40e_virtchnl_ops v_opcode,
				 i40e_status v_retval, u8 *msg,
				 u16 msglen)
{
	struct i40e_hw *hw = &pf->hw;
	struct i40e_vf *vf = pf->vf;
	int i;

	for (i = 0; i < pf->num_alloc_vfs; i++) {
		/* Ignore return value on purpose - a given VF may fail, but
		 * we need to keep going and send to all of them
		 */
		i40e_aq_send_msg_to_vf(hw, vf->vf_id, v_opcode, v_retval,
				       msg, msglen, NULL);
		vf++;
	}
}

/**
 * i40e_vc_notify_link_state
 * @pf: pointer to the pf structure
 *
 * send a link status message to all VFs on a given PF
 **/
void i40e_vc_notify_link_state(struct i40e_pf *pf)
{
	struct i40e_virtchnl_pf_event pfe;
M
Mitch Williams 已提交
1953 1954 1955 1956
	struct i40e_hw *hw = &pf->hw;
	struct i40e_vf *vf = pf->vf;
	struct i40e_link_status *ls = &pf->hw.phy.link_info;
	int i;
1957 1958 1959

	pfe.event = I40E_VIRTCHNL_EVENT_LINK_CHANGE;
	pfe.severity = I40E_PF_EVENT_SEVERITY_INFO;
M
Mitch Williams 已提交
1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974
	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++;
	}
1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049 2050 2051
}

/**
 * i40e_vc_notify_reset
 * @pf: pointer to the pf structure
 *
 * indicate a pending reset to all VFs on a given PF
 **/
void i40e_vc_notify_reset(struct i40e_pf *pf)
{
	struct i40e_virtchnl_pf_event pfe;

	pfe.event = I40E_VIRTCHNL_EVENT_RESET_IMPENDING;
	pfe.severity = I40E_PF_EVENT_SEVERITY_CERTAIN_DOOM;
	i40e_vc_vf_broadcast(pf, I40E_VIRTCHNL_OP_EVENT, I40E_SUCCESS,
			     (u8 *)&pfe, sizeof(struct i40e_virtchnl_pf_event));
}

/**
 * i40e_vc_notify_vf_reset
 * @vf: pointer to the vf structure
 *
 * indicate a pending reset to the given VF
 **/
void i40e_vc_notify_vf_reset(struct i40e_vf *vf)
{
	struct i40e_virtchnl_pf_event pfe;

	pfe.event = I40E_VIRTCHNL_EVENT_RESET_IMPENDING;
	pfe.severity = I40E_PF_EVENT_SEVERITY_CERTAIN_DOOM;
	i40e_aq_send_msg_to_vf(&vf->pf->hw, vf->vf_id, I40E_VIRTCHNL_OP_EVENT,
			       I40E_SUCCESS, (u8 *)&pfe,
			       sizeof(struct i40e_virtchnl_pf_event), NULL);
}

/**
 * i40e_ndo_set_vf_mac
 * @netdev: network interface device structure
 * @vf_id: vf identifier
 * @mac: mac address
 *
 * program vf mac address
 **/
int i40e_ndo_set_vf_mac(struct net_device *netdev, int vf_id, u8 *mac)
{
	struct i40e_netdev_priv *np = netdev_priv(netdev);
	struct i40e_vsi *vsi = np->vsi;
	struct i40e_pf *pf = vsi->back;
	struct i40e_mac_filter *f;
	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_param;
	}

	vf = &(pf->vf[vf_id]);
	vsi = pf->vsi[vf->lan_vsi_index];
	if (!test_bit(I40E_VF_STAT_INIT, &vf->vf_states)) {
		dev_err(&pf->pdev->dev,
			"Uninitialized VF %d\n", vf_id);
		ret = -EINVAL;
		goto error_param;
	}

	if (!is_valid_ether_addr(mac)) {
		dev_err(&pf->pdev->dev,
			"Invalid VF ethernet address\n");
		ret = -EINVAL;
		goto error_param;
	}

	/* delete the temporary mac address */
2052 2053
	i40e_del_filter(vsi, vf->default_lan_addr.addr, vf->port_vlan_id,
			true, false);
2054 2055

	/* add the new mac address */
2056
	f = i40e_add_filter(vsi, mac, vf->port_vlan_id, true, false);
2057 2058 2059 2060 2061 2062 2063 2064 2065 2066 2067 2068 2069 2070 2071
	if (!f) {
		dev_err(&pf->pdev->dev,
			"Unable to add VF ucast filter\n");
		ret = -ENOMEM;
		goto error_param;
	}

	dev_info(&pf->pdev->dev, "Setting MAC %pM on VF %d\n", mac, vf_id);
	/* program mac filter */
	if (i40e_sync_vsi_filters(vsi)) {
		dev_err(&pf->pdev->dev, "Unable to program ucast filters\n");
		ret = -EIO;
		goto error_param;
	}
	memcpy(vf->default_lan_addr.addr, mac, ETH_ALEN);
2072
	vf->pf_set_mac = true;
2073 2074 2075 2076 2077 2078 2079 2080 2081 2082 2083 2084 2085 2086 2087 2088 2089 2090 2091 2092 2093 2094 2095 2096 2097 2098 2099 2100 2101 2102 2103 2104 2105 2106 2107 2108 2109 2110 2111 2112 2113 2114 2115 2116 2117 2118
	dev_info(&pf->pdev->dev, "Reload the VF driver to make this change effective.\n");
	ret = 0;

error_param:
	return ret;
}

/**
 * i40e_ndo_set_vf_port_vlan
 * @netdev: network interface device structure
 * @vf_id: vf identifier
 * @vlan_id: mac address
 * @qos: priority setting
 *
 * program vf vlan id and/or qos
 **/
int i40e_ndo_set_vf_port_vlan(struct net_device *netdev,
			      int vf_id, u16 vlan_id, u8 qos)
{
	struct i40e_netdev_priv *np = netdev_priv(netdev);
	struct i40e_pf *pf = np->vsi->back;
	struct i40e_vsi *vsi;
	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_pvid;
	}

	if ((vlan_id > I40E_MAX_VLANID) || (qos > 7)) {
		dev_err(&pf->pdev->dev, "Invalid VF Parameters\n");
		ret = -EINVAL;
		goto error_pvid;
	}

	vf = &(pf->vf[vf_id]);
	vsi = pf->vsi[vf->lan_vsi_index];
	if (!test_bit(I40E_VF_STAT_INIT, &vf->vf_states)) {
		dev_err(&pf->pdev->dev, "Uninitialized VF %d\n", vf_id);
		ret = -EINVAL;
		goto error_pvid;
	}

2119
	if (vsi->info.pvid == 0 && i40e_is_vsi_in_vlan(vsi)) {
2120 2121 2122
		dev_err(&pf->pdev->dev,
			"VF %d has already configured VLAN filters and the administrator is requesting a port VLAN override.\nPlease unload and reload the VF driver for this change to take effect.\n",
			vf_id);
2123 2124 2125 2126 2127 2128
		/* Administrator Error - knock the VF offline until he does
		 * the right thing by reconfiguring his network correctly
		 * and then reloading the VF driver.
		 */
		i40e_vc_disable_vf(pf, vf);
	}
2129

2130 2131
	/* Check for condition where there was already a port VLAN ID
	 * filter set and now it is being deleted by setting it to zero.
2132 2133
	 * Additionally check for the condition where there was a port
	 * VLAN but now there is a new and different port VLAN being set.
2134 2135 2136 2137
	 * Before deleting all the old VLAN filters we must add new ones
	 * with -1 (I40E_VLAN_ANY) or otherwise we're left with all our
	 * MAC addresses deleted.
	 */
2138 2139 2140
	if ((!(vlan_id || qos) ||
	    (vlan_id | qos) != le16_to_cpu(vsi->info.pvid)) &&
	    vsi->info.pvid)
2141 2142
		ret = i40e_vsi_add_vlan(vsi, I40E_VLAN_ANY);

2143 2144 2145 2146 2147 2148 2149 2150 2151 2152 2153 2154 2155 2156
	if (vsi->info.pvid) {
		/* kill old VLAN */
		ret = i40e_vsi_kill_vlan(vsi, (le16_to_cpu(vsi->info.pvid) &
					       VLAN_VID_MASK));
		if (ret) {
			dev_info(&vsi->back->pdev->dev,
				 "remove VLAN failed, ret=%d, aq_err=%d\n",
				 ret, pf->hw.aq.asq_last_status);
		}
	}
	if (vlan_id || qos)
		ret = i40e_vsi_add_pvid(vsi,
				vlan_id | (qos << I40E_VLAN_PRIORITY_SHIFT));
	else
G
Greg Rose 已提交
2157
		i40e_vsi_remove_pvid(vsi);
2158 2159 2160 2161 2162 2163 2164 2165 2166 2167 2168 2169 2170

	if (vlan_id) {
		dev_info(&pf->pdev->dev, "Setting VLAN %d, QOS 0x%x on VF %d\n",
			 vlan_id, qos, vf_id);

		/* add new VLAN filter */
		ret = i40e_vsi_add_vlan(vsi, vlan_id);
		if (ret) {
			dev_info(&vsi->back->pdev->dev,
				 "add VF VLAN failed, ret=%d aq_err=%d\n", ret,
				 vsi->back->hw.aq.asq_last_status);
			goto error_pvid;
		}
2171 2172 2173 2174
		/* Kill non-vlan MAC filters - ignore error return since
		 * there might not be any non-vlan MAC filters.
		 */
		i40e_vsi_kill_vlan(vsi, I40E_VLAN_ANY);
2175 2176 2177 2178 2179 2180
	}

	if (ret) {
		dev_err(&pf->pdev->dev, "Unable to update VF vsi context\n");
		goto error_pvid;
	}
G
Greg Rose 已提交
2181 2182 2183 2184
	/* The Port VLAN needs to be saved across resets the same as the
	 * default LAN MAC address.
	 */
	vf->port_vlan_id = le16_to_cpu(vsi->info.pvid);
2185 2186 2187 2188 2189 2190 2191 2192 2193 2194 2195 2196 2197 2198 2199 2200
	ret = 0;

error_pvid:
	return ret;
}

/**
 * i40e_ndo_set_vf_bw
 * @netdev: network interface device structure
 * @vf_id: vf identifier
 * @tx_rate: tx rate
 *
 * configure vf tx rate
 **/
int i40e_ndo_set_vf_bw(struct net_device *netdev, int vf_id, int tx_rate)
{
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	struct i40e_netdev_priv *np = netdev_priv(netdev);
	struct i40e_pf *pf = np->vsi->back;
	struct i40e_vsi *vsi;
	struct i40e_vf *vf;
	int speed = 0;
	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;
	}

	vf = &(pf->vf[vf_id]);
	vsi = pf->vsi[vf->lan_vsi_index];
	if (!test_bit(I40E_VF_STAT_INIT, &vf->vf_states)) {
		dev_err(&pf->pdev->dev, "Uninitialized VF %d.\n", vf_id);
		ret = -EINVAL;
		goto error;
	}

	switch (pf->hw.phy.link_info.link_speed) {
	case I40E_LINK_SPEED_40GB:
		speed = 40000;
		break;
	case I40E_LINK_SPEED_10GB:
		speed = 10000;
		break;
	case I40E_LINK_SPEED_1GB:
		speed = 1000;
		break;
	default:
		break;
	}

	if (tx_rate > speed) {
		dev_err(&pf->pdev->dev, "Invalid tx rate %d specified for vf %d.",
			tx_rate, vf->vf_id);
		ret = -EINVAL;
		goto error;
	}

	/* Tx rate credits are in values of 50Mbps, 0 is disabled*/
	ret = i40e_aq_config_vsi_bw_limit(&pf->hw, vsi->seid, tx_rate / 50, 0,
					  NULL);
	if (ret) {
		dev_err(&pf->pdev->dev, "Unable to set tx rate, error code %d.\n",
			ret);
		ret = -EIO;
		goto error;
	}
	vf->tx_rate = tx_rate;
error:
	return ret;
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}

/**
 * i40e_ndo_get_vf_config
 * @netdev: network interface device structure
 * @vf_id: vf identifier
 * @ivi: vf configuration structure
 *
 * return vf configuration
 **/
int i40e_ndo_get_vf_config(struct net_device *netdev,
			   int vf_id, struct ifla_vf_info *ivi)
{
	struct i40e_netdev_priv *np = netdev_priv(netdev);
	struct i40e_vsi *vsi = np->vsi;
	struct i40e_pf *pf = vsi->back;
	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_param;
	}

	vf = &(pf->vf[vf_id]);
	/* first vsi is always the LAN vsi */
	vsi = pf->vsi[vf->lan_vsi_index];
	if (!test_bit(I40E_VF_STAT_INIT, &vf->vf_states)) {
		dev_err(&pf->pdev->dev, "Uninitialized VF %d\n", vf_id);
		ret = -EINVAL;
		goto error_param;
	}

	ivi->vf = vf_id;

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	memcpy(&ivi->mac, vf->default_lan_addr.addr, ETH_ALEN);
2294

2295
	ivi->tx_rate = vf->tx_rate;
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	ivi->vlan = le16_to_cpu(vsi->info.pvid) & I40E_VLAN_MASK;
	ivi->qos = (le16_to_cpu(vsi->info.pvid) & I40E_PRIORITY_MASK) >>
		   I40E_VLAN_PRIORITY_SHIFT;
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	if (vf->link_forced == false)
		ivi->linkstate = IFLA_VF_LINK_STATE_AUTO;
	else if (vf->link_up == true)
		ivi->linkstate = IFLA_VF_LINK_STATE_ENABLE;
	else
		ivi->linkstate = IFLA_VF_LINK_STATE_DISABLE;

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	ret = 0;

error_param:
	return ret;
}
M
Mitch Williams 已提交
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/**
 * 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;
}