ice_lib.c 88.9 KB
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// SPDX-License-Identifier: GPL-2.0
/* Copyright (c) 2018, Intel Corporation. */

#include "ice.h"
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#include "ice_base.h"
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#include "ice_flow.h"
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#include "ice_lib.h"
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#include "ice_fltr.h"
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#include "ice_dcb_lib.h"
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#include "ice_devlink.h"
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/**
 * ice_vsi_type_str - maps VSI type enum to string equivalents
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 * @vsi_type: VSI type enum
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 */
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const char *ice_vsi_type_str(enum ice_vsi_type vsi_type)
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{
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	switch (vsi_type) {
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	case ICE_VSI_PF:
		return "ICE_VSI_PF";
	case ICE_VSI_VF:
		return "ICE_VSI_VF";
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	case ICE_VSI_CTRL:
		return "ICE_VSI_CTRL";
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	case ICE_VSI_LB:
		return "ICE_VSI_LB";
	default:
		return "unknown";
	}
}

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/**
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 * ice_vsi_ctrl_all_rx_rings - Start or stop a VSI's Rx rings
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 * @vsi: the VSI being configured
 * @ena: start or stop the Rx rings
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 *
 * First enable/disable all of the Rx rings, flush any remaining writes, and
 * then verify that they have all been enabled/disabled successfully. This will
 * let all of the register writes complete when enabling/disabling the Rx rings
 * before waiting for the change in hardware to complete.
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 */
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static int ice_vsi_ctrl_all_rx_rings(struct ice_vsi *vsi, bool ena)
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{
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	int ret = 0;
	u16 i;
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	for (i = 0; i < vsi->num_rxq; i++)
		ice_vsi_ctrl_one_rx_ring(vsi, ena, i, false);

	ice_flush(&vsi->back->hw);

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	for (i = 0; i < vsi->num_rxq; i++) {
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		ret = ice_vsi_wait_one_rx_ring(vsi, ena, i);
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		if (ret)
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			break;
	}

	return ret;
}

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/**
 * ice_vsi_alloc_arrays - Allocate queue and vector pointer arrays for the VSI
 * @vsi: VSI pointer
 *
 * On error: returns error code (negative)
 * On success: returns 0
 */
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static int ice_vsi_alloc_arrays(struct ice_vsi *vsi)
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{
	struct ice_pf *pf = vsi->back;
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	struct device *dev;

	dev = ice_pf_to_dev(pf);
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	/* allocate memory for both Tx and Rx ring pointers */
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	vsi->tx_rings = devm_kcalloc(dev, vsi->alloc_txq,
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				     sizeof(*vsi->tx_rings), GFP_KERNEL);
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	if (!vsi->tx_rings)
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		return -ENOMEM;
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	vsi->rx_rings = devm_kcalloc(dev, vsi->alloc_rxq,
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				     sizeof(*vsi->rx_rings), GFP_KERNEL);
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	if (!vsi->rx_rings)
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		goto err_rings;

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	/* XDP will have vsi->alloc_txq Tx queues as well, so double the size */
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	vsi->txq_map = devm_kcalloc(dev, (2 * vsi->alloc_txq),
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				    sizeof(*vsi->txq_map), GFP_KERNEL);

	if (!vsi->txq_map)
		goto err_txq_map;

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	vsi->rxq_map = devm_kcalloc(dev, vsi->alloc_rxq,
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				    sizeof(*vsi->rxq_map), GFP_KERNEL);
	if (!vsi->rxq_map)
		goto err_rxq_map;

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	/* There is no need to allocate q_vectors for a loopback VSI. */
	if (vsi->type == ICE_VSI_LB)
		return 0;

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	/* allocate memory for q_vector pointers */
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	vsi->q_vectors = devm_kcalloc(dev, vsi->num_q_vectors,
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				      sizeof(*vsi->q_vectors), GFP_KERNEL);
	if (!vsi->q_vectors)
		goto err_vectors;
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	return 0;

err_vectors:
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	devm_kfree(dev, vsi->rxq_map);
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err_rxq_map:
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	devm_kfree(dev, vsi->txq_map);
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err_txq_map:
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	devm_kfree(dev, vsi->rx_rings);
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err_rings:
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	devm_kfree(dev, vsi->tx_rings);
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	return -ENOMEM;
}

/**
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 * ice_vsi_set_num_desc - Set number of descriptors for queues on this VSI
 * @vsi: the VSI being configured
 */
static void ice_vsi_set_num_desc(struct ice_vsi *vsi)
{
	switch (vsi->type) {
	case ICE_VSI_PF:
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	case ICE_VSI_CTRL:
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	case ICE_VSI_LB:
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		/* a user could change the values of num_[tr]x_desc using
		 * ethtool -G so we should keep those values instead of
		 * overwriting them with the defaults.
		 */
		if (!vsi->num_rx_desc)
			vsi->num_rx_desc = ICE_DFLT_NUM_RX_DESC;
		if (!vsi->num_tx_desc)
			vsi->num_tx_desc = ICE_DFLT_NUM_TX_DESC;
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		break;
	default:
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		dev_dbg(ice_pf_to_dev(vsi->back), "Not setting number of Tx/Rx descriptors for VSI type %d\n",
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			vsi->type);
		break;
	}
}

/**
 * ice_vsi_set_num_qs - Set number of queues, descriptors and vectors for a VSI
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 * @vsi: the VSI being configured
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 * @vf_id: ID of the VF being configured
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 *
 * Return 0 on success and a negative value on error
 */
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static void ice_vsi_set_num_qs(struct ice_vsi *vsi, u16 vf_id)
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{
	struct ice_pf *pf = vsi->back;
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	struct ice_vf *vf = NULL;

	if (vsi->type == ICE_VSI_VF)
		vsi->vf_id = vf_id;
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	else
		vsi->vf_id = ICE_INVAL_VFID;
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	switch (vsi->type) {
	case ICE_VSI_PF:
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		vsi->alloc_txq = min3(pf->num_lan_msix,
				      ice_get_avail_txq_count(pf),
				      (u16)num_online_cpus());
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		if (vsi->req_txq) {
			vsi->alloc_txq = vsi->req_txq;
			vsi->num_txq = vsi->req_txq;
		}
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		pf->num_lan_tx = vsi->alloc_txq;

		/* only 1 Rx queue unless RSS is enabled */
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		if (!test_bit(ICE_FLAG_RSS_ENA, pf->flags)) {
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			vsi->alloc_rxq = 1;
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		} else {
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			vsi->alloc_rxq = min3(pf->num_lan_msix,
					      ice_get_avail_rxq_count(pf),
					      (u16)num_online_cpus());
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			if (vsi->req_rxq) {
				vsi->alloc_rxq = vsi->req_rxq;
				vsi->num_rxq = vsi->req_rxq;
			}
		}
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		pf->num_lan_rx = vsi->alloc_rxq;

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		vsi->num_q_vectors = min_t(int, pf->num_lan_msix,
					   max_t(int, vsi->alloc_rxq,
						 vsi->alloc_txq));
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		break;
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	case ICE_VSI_VF:
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		vf = &pf->vf[vsi->vf_id];
		vsi->alloc_txq = vf->num_vf_qs;
		vsi->alloc_rxq = vf->num_vf_qs;
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		/* pf->num_msix_per_vf includes (VF miscellaneous vector +
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		 * data queue interrupts). Since vsi->num_q_vectors is number
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		 * of queues vectors, subtract 1 (ICE_NONQ_VECS_VF) from the
		 * original vector count
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		 */
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		vsi->num_q_vectors = pf->num_msix_per_vf - ICE_NONQ_VECS_VF;
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		break;
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	case ICE_VSI_CTRL:
		vsi->alloc_txq = 1;
		vsi->alloc_rxq = 1;
		vsi->num_q_vectors = 1;
		break;
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	case ICE_VSI_LB:
		vsi->alloc_txq = 1;
		vsi->alloc_rxq = 1;
		break;
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	default:
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		dev_warn(ice_pf_to_dev(pf), "Unknown VSI type %d\n", vsi->type);
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		break;
	}
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	ice_vsi_set_num_desc(vsi);
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}

/**
 * ice_get_free_slot - get the next non-NULL location index in array
 * @array: array to search
 * @size: size of the array
 * @curr: last known occupied index to be used as a search hint
 *
 * void * is being used to keep the functionality generic. This lets us use this
 * function on any array of pointers.
 */
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static int ice_get_free_slot(void *array, int size, int curr)
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{
	int **tmp_array = (int **)array;
	int next;

	if (curr < (size - 1) && !tmp_array[curr + 1]) {
		next = curr + 1;
	} else {
		int i = 0;

		while ((i < size) && (tmp_array[i]))
			i++;
		if (i == size)
			next = ICE_NO_VSI;
		else
			next = i;
	}
	return next;
}

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/**
 * ice_vsi_delete - delete a VSI from the switch
 * @vsi: pointer to VSI being removed
 */
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static void ice_vsi_delete(struct ice_vsi *vsi)
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{
	struct ice_pf *pf = vsi->back;
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	struct ice_vsi_ctx *ctxt;
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	enum ice_status status;

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	ctxt = kzalloc(sizeof(*ctxt), GFP_KERNEL);
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	if (!ctxt)
		return;

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	if (vsi->type == ICE_VSI_VF)
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		ctxt->vf_num = vsi->vf_id;
	ctxt->vsi_num = vsi->vsi_num;
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	memcpy(&ctxt->info, &vsi->info, sizeof(ctxt->info));
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	status = ice_free_vsi(&pf->hw, vsi->idx, ctxt, false, NULL);
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	if (status)
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		dev_err(ice_pf_to_dev(pf), "Failed to delete VSI %i in FW - error: %s\n",
			vsi->vsi_num, ice_stat_str(status));
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277
	kfree(ctxt);
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}

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/**
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 * ice_vsi_free_arrays - De-allocate queue and vector pointer arrays for the VSI
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 * @vsi: pointer to VSI being cleared
 */
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static void ice_vsi_free_arrays(struct ice_vsi *vsi)
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{
	struct ice_pf *pf = vsi->back;
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	struct device *dev;

	dev = ice_pf_to_dev(pf);
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	/* free the ring and vector containers */
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	if (vsi->q_vectors) {
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		devm_kfree(dev, vsi->q_vectors);
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		vsi->q_vectors = NULL;
	}
	if (vsi->tx_rings) {
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		devm_kfree(dev, vsi->tx_rings);
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		vsi->tx_rings = NULL;
	}
	if (vsi->rx_rings) {
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		devm_kfree(dev, vsi->rx_rings);
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		vsi->rx_rings = NULL;
	}
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	if (vsi->txq_map) {
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		devm_kfree(dev, vsi->txq_map);
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		vsi->txq_map = NULL;
	}
	if (vsi->rxq_map) {
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		devm_kfree(dev, vsi->rxq_map);
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		vsi->rxq_map = NULL;
	}
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}

/**
 * ice_vsi_clear - clean up and deallocate the provided VSI
 * @vsi: pointer to VSI being cleared
 *
 * This deallocates the VSI's queue resources, removes it from the PF's
 * VSI array if necessary, and deallocates the VSI
 *
 * Returns 0 on success, negative on failure
 */
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static int ice_vsi_clear(struct ice_vsi *vsi)
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{
	struct ice_pf *pf = NULL;
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	struct device *dev;
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	if (!vsi)
		return 0;

	if (!vsi->back)
		return -EINVAL;

	pf = vsi->back;
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	dev = ice_pf_to_dev(pf);
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	if (!pf->vsi[vsi->idx] || pf->vsi[vsi->idx] != vsi) {
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		dev_dbg(dev, "vsi does not exist at pf->vsi[%d]\n", vsi->idx);
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		return -EINVAL;
	}

	mutex_lock(&pf->sw_mutex);
	/* updates the PF for this cleared VSI */

	pf->vsi[vsi->idx] = NULL;
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	if (vsi->idx < pf->next_vsi && vsi->type != ICE_VSI_CTRL)
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		pf->next_vsi = vsi->idx;
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	if (vsi->idx < pf->next_vsi && vsi->type == ICE_VSI_CTRL &&
	    vsi->vf_id != ICE_INVAL_VFID)
		pf->next_vsi = vsi->idx;
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352
	ice_vsi_free_arrays(vsi);
353
	mutex_unlock(&pf->sw_mutex);
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	devm_kfree(dev, vsi);
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	return 0;
}

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/**
 * ice_msix_clean_ctrl_vsi - MSIX mode interrupt handler for ctrl VSI
 * @irq: interrupt number
 * @data: pointer to a q_vector
 */
static irqreturn_t ice_msix_clean_ctrl_vsi(int __always_unused irq, void *data)
{
	struct ice_q_vector *q_vector = (struct ice_q_vector *)data;

	if (!q_vector->tx.ring)
		return IRQ_HANDLED;

#define FDIR_RX_DESC_CLEAN_BUDGET 64
	ice_clean_rx_irq(q_vector->rx.ring, FDIR_RX_DESC_CLEAN_BUDGET);
	ice_clean_ctrl_tx_irq(q_vector->tx.ring);

	return IRQ_HANDLED;
}

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/**
 * ice_msix_clean_rings - MSIX mode Interrupt Handler
 * @irq: interrupt number
 * @data: pointer to a q_vector
 */
383
static irqreturn_t ice_msix_clean_rings(int __always_unused irq, void *data)
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{
	struct ice_q_vector *q_vector = (struct ice_q_vector *)data;

	if (!q_vector->tx.ring && !q_vector->rx.ring)
		return IRQ_HANDLED;

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	q_vector->total_events++;

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	napi_schedule(&q_vector->napi);

	return IRQ_HANDLED;
}

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/**
 * ice_vsi_alloc - Allocates the next available struct VSI in the PF
 * @pf: board private structure
400
 * @vsi_type: type of VSI
401
 * @vf_id: ID of the VF being configured
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 *
 * returns a pointer to a VSI on success, NULL on failure.
 */
405
static struct ice_vsi *
406
ice_vsi_alloc(struct ice_pf *pf, enum ice_vsi_type vsi_type, u16 vf_id)
407
{
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	struct device *dev = ice_pf_to_dev(pf);
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	struct ice_vsi *vsi = NULL;

	/* Need to protect the allocation of the VSIs at the PF level */
	mutex_lock(&pf->sw_mutex);

	/* If we have already allocated our maximum number of VSIs,
	 * pf->next_vsi will be ICE_NO_VSI. If not, pf->next_vsi index
	 * is available to be populated
	 */
	if (pf->next_vsi == ICE_NO_VSI) {
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		dev_dbg(dev, "out of VSI slots!\n");
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		goto unlock_pf;
	}

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	vsi = devm_kzalloc(dev, sizeof(*vsi), GFP_KERNEL);
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	if (!vsi)
		goto unlock_pf;

427
	vsi->type = vsi_type;
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	vsi->back = pf;
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	set_bit(ICE_VSI_DOWN, vsi->state);
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431
	if (vsi_type == ICE_VSI_VF)
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		ice_vsi_set_num_qs(vsi, vf_id);
	else
		ice_vsi_set_num_qs(vsi, ICE_INVAL_VFID);
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	switch (vsi->type) {
	case ICE_VSI_PF:
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		if (ice_vsi_alloc_arrays(vsi))
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			goto err_rings;

		/* Setup default MSIX irq handler for VSI */
		vsi->irq_handler = ice_msix_clean_rings;
		break;
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	case ICE_VSI_CTRL:
		if (ice_vsi_alloc_arrays(vsi))
			goto err_rings;

		/* Setup ctrl VSI MSIX irq handler */
		vsi->irq_handler = ice_msix_clean_ctrl_vsi;
		break;
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	case ICE_VSI_VF:
452
		if (ice_vsi_alloc_arrays(vsi))
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			goto err_rings;
		break;
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	case ICE_VSI_LB:
		if (ice_vsi_alloc_arrays(vsi))
			goto err_rings;
		break;
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	default:
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		dev_warn(dev, "Unknown VSI type %d\n", vsi->type);
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		goto unlock_pf;
	}

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	if (vsi->type == ICE_VSI_CTRL && vf_id == ICE_INVAL_VFID) {
		/* Use the last VSI slot as the index for PF control VSI */
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		vsi->idx = pf->num_alloc_vsi - 1;
		pf->ctrl_vsi_idx = vsi->idx;
		pf->vsi[vsi->idx] = vsi;
	} else {
		/* fill slot and make note of the index */
		vsi->idx = pf->next_vsi;
		pf->vsi[pf->next_vsi] = vsi;
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		/* prepare pf->next_vsi for next use */
		pf->next_vsi = ice_get_free_slot(pf->vsi, pf->num_alloc_vsi,
						 pf->next_vsi);
	}
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	if (vsi->type == ICE_VSI_CTRL && vf_id != ICE_INVAL_VFID)
		pf->vf[vf_id].ctrl_vsi_idx = vsi->idx;
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	goto unlock_pf;

err_rings:
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	devm_kfree(dev, vsi);
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	vsi = NULL;
unlock_pf:
	mutex_unlock(&pf->sw_mutex);
	return vsi;
}

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/**
 * ice_alloc_fd_res - Allocate FD resource for a VSI
 * @vsi: pointer to the ice_vsi
 *
 * This allocates the FD resources
 *
 * Returns 0 on success, -EPERM on no-op or -EIO on failure
 */
static int ice_alloc_fd_res(struct ice_vsi *vsi)
{
	struct ice_pf *pf = vsi->back;
	u32 g_val, b_val;

	/* Flow Director filters are only allocated/assigned to the PF VSI which
	 * passes the traffic. The CTRL VSI is only used to add/delete filters
	 * so we don't allocate resources to it
	 */

	/* FD filters from guaranteed pool per VSI */
	g_val = pf->hw.func_caps.fd_fltr_guar;
	if (!g_val)
		return -EPERM;

	/* FD filters from best effort pool */
	b_val = pf->hw.func_caps.fd_fltr_best_effort;
	if (!b_val)
		return -EPERM;

519
	if (!(vsi->type == ICE_VSI_PF || vsi->type == ICE_VSI_VF))
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		return -EPERM;

	if (!test_bit(ICE_FLAG_FD_ENA, pf->flags))
		return -EPERM;

	vsi->num_gfltr = g_val / pf->num_alloc_vsi;

	/* each VSI gets same "best_effort" quota */
	vsi->num_bfltr = b_val;

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	if (vsi->type == ICE_VSI_VF) {
		vsi->num_gfltr = 0;

		/* each VSI gets same "best_effort" quota */
		vsi->num_bfltr = b_val;
	}

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	return 0;
}

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/**
 * ice_vsi_get_qs - Assign queues from PF to VSI
 * @vsi: the VSI to assign queues to
 *
 * Returns 0 on success and a negative value on error
 */
546
static int ice_vsi_get_qs(struct ice_vsi *vsi)
547
{
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	struct ice_pf *pf = vsi->back;
	struct ice_qs_cfg tx_qs_cfg = {
		.qs_mutex = &pf->avail_q_mutex,
		.pf_map = pf->avail_txqs,
552
		.pf_map_size = pf->max_pf_txqs,
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		.q_count = vsi->alloc_txq,
		.scatter_count = ICE_MAX_SCATTER_TXQS,
		.vsi_map = vsi->txq_map,
		.vsi_map_offset = 0,
557
		.mapping_mode = ICE_VSI_MAP_CONTIG
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	};
	struct ice_qs_cfg rx_qs_cfg = {
		.qs_mutex = &pf->avail_q_mutex,
		.pf_map = pf->avail_rxqs,
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		.pf_map_size = pf->max_pf_rxqs,
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		.q_count = vsi->alloc_rxq,
		.scatter_count = ICE_MAX_SCATTER_RXQS,
		.vsi_map = vsi->rxq_map,
		.vsi_map_offset = 0,
567
		.mapping_mode = ICE_VSI_MAP_CONTIG
568
	};
569
	int ret;
570

571
	ret = __ice_vsi_get_qs(&tx_qs_cfg);
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	if (ret)
		return ret;
	vsi->tx_mapping_mode = tx_qs_cfg.mapping_mode;
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	ret = __ice_vsi_get_qs(&rx_qs_cfg);
	if (ret)
		return ret;
	vsi->rx_mapping_mode = rx_qs_cfg.mapping_mode;

	return 0;
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}

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/**
 * ice_vsi_put_qs - Release queues from VSI to PF
 * @vsi: the VSI that is going to release queues
 */
588
static void ice_vsi_put_qs(struct ice_vsi *vsi)
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{
	struct ice_pf *pf = vsi->back;
	int i;

	mutex_lock(&pf->avail_q_mutex);

	for (i = 0; i < vsi->alloc_txq; i++) {
		clear_bit(vsi->txq_map[i], pf->avail_txqs);
		vsi->txq_map[i] = ICE_INVAL_Q_INDEX;
	}

	for (i = 0; i < vsi->alloc_rxq; i++) {
		clear_bit(vsi->rxq_map[i], pf->avail_rxqs);
		vsi->rxq_map[i] = ICE_INVAL_Q_INDEX;
	}

	mutex_unlock(&pf->avail_q_mutex);
}

T
Tony Nguyen 已提交
608 609 610 611 612 613 614 615 616 617 618
/**
 * ice_is_safe_mode
 * @pf: pointer to the PF struct
 *
 * returns true if driver is in safe mode, false otherwise
 */
bool ice_is_safe_mode(struct ice_pf *pf)
{
	return !test_bit(ICE_FLAG_ADV_FEATURES, pf->flags);
}

619
/**
T
Tony Nguyen 已提交
620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635
 * ice_vsi_clean_rss_flow_fld - Delete RSS configuration
 * @vsi: the VSI being cleaned up
 *
 * This function deletes RSS input set for all flows that were configured
 * for this VSI
 */
static void ice_vsi_clean_rss_flow_fld(struct ice_vsi *vsi)
{
	struct ice_pf *pf = vsi->back;
	enum ice_status status;

	if (ice_is_safe_mode(pf))
		return;

	status = ice_rem_vsi_rss_cfg(&pf->hw, vsi->idx);
	if (status)
636 637
		dev_dbg(ice_pf_to_dev(pf), "ice_rem_vsi_rss_cfg failed for vsi = %d, error = %s\n",
			vsi->vsi_num, ice_stat_str(status));
T
Tony Nguyen 已提交
638 639 640 641
}

/**
 * ice_rss_clean - Delete RSS related VSI structures and configuration
642 643 644 645
 * @vsi: the VSI being removed
 */
static void ice_rss_clean(struct ice_vsi *vsi)
{
B
Brett Creeley 已提交
646 647
	struct ice_pf *pf = vsi->back;
	struct device *dev;
648

B
Brett Creeley 已提交
649
	dev = ice_pf_to_dev(pf);
650 651

	if (vsi->rss_hkey_user)
B
Brett Creeley 已提交
652
		devm_kfree(dev, vsi->rss_hkey_user);
653
	if (vsi->rss_lut_user)
B
Brett Creeley 已提交
654
		devm_kfree(dev, vsi->rss_lut_user);
T
Tony Nguyen 已提交
655 656 657 658 659

	ice_vsi_clean_rss_flow_fld(vsi);
	/* remove RSS replay list */
	if (!ice_is_safe_mode(pf))
		ice_rem_vsi_rss_list(&pf->hw, vsi->idx);
660 661
}

662 663 664 665
/**
 * ice_vsi_set_rss_params - Setup RSS capabilities per VSI type
 * @vsi: the VSI being configured
 */
666
static void ice_vsi_set_rss_params(struct ice_vsi *vsi)
667 668 669 670 671 672 673 674 675 676 677 678 679
{
	struct ice_hw_common_caps *cap;
	struct ice_pf *pf = vsi->back;

	if (!test_bit(ICE_FLAG_RSS_ENA, pf->flags)) {
		vsi->rss_size = 1;
		return;
	}

	cap = &pf->hw.func_caps.common_cap;
	switch (vsi->type) {
	case ICE_VSI_PF:
		/* PF VSI will inherit RSS instance of PF */
K
Karol Kolacinski 已提交
680 681
		vsi->rss_table_size = (u16)cap->rss_table_size;
		vsi->rss_size = min_t(u16, num_online_cpus(),
682 683 684
				      BIT(cap->rss_table_entry_width));
		vsi->rss_lut_type = ICE_AQC_GSET_RSS_LUT_TABLE_TYPE_PF;
		break;
685
	case ICE_VSI_VF:
M
Mitch Williams 已提交
686 687
		/* VF VSI will get a small RSS table.
		 * For VSI_LUT, LUT size should be set to 64 bytes.
688 689
		 */
		vsi->rss_table_size = ICE_VSIQF_HLUT_ARRAY_SIZE;
M
Mitch Williams 已提交
690
		vsi->rss_size = ICE_MAX_RSS_QS_PER_VF;
691 692
		vsi->rss_lut_type = ICE_AQC_GSET_RSS_LUT_TABLE_TYPE_VSI;
		break;
693 694
	case ICE_VSI_LB:
		break;
695
	default:
696 697
		dev_dbg(ice_pf_to_dev(pf), "Unsupported VSI type %s\n",
			ice_vsi_type_str(vsi->type));
698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748
		break;
	}
}

/**
 * ice_set_dflt_vsi_ctx - Set default VSI context before adding a VSI
 * @ctxt: the VSI context being set
 *
 * This initializes a default VSI context for all sections except the Queues.
 */
static void ice_set_dflt_vsi_ctx(struct ice_vsi_ctx *ctxt)
{
	u32 table = 0;

	memset(&ctxt->info, 0, sizeof(ctxt->info));
	/* VSI's should be allocated from shared pool */
	ctxt->alloc_from_pool = true;
	/* Src pruning enabled by default */
	ctxt->info.sw_flags = ICE_AQ_VSI_SW_FLAG_SRC_PRUNE;
	/* Traffic from VSI can be sent to LAN */
	ctxt->info.sw_flags2 = ICE_AQ_VSI_SW_FLAG_LAN_ENA;
	/* By default bits 3 and 4 in vlan_flags are 0's which results in legacy
	 * behavior (show VLAN, DEI, and UP) in descriptor. Also, allow all
	 * packets untagged/tagged.
	 */
	ctxt->info.vlan_flags = ((ICE_AQ_VSI_VLAN_MODE_ALL &
				  ICE_AQ_VSI_VLAN_MODE_M) >>
				 ICE_AQ_VSI_VLAN_MODE_S);
	/* Have 1:1 UP mapping for both ingress/egress tables */
	table |= ICE_UP_TABLE_TRANSLATE(0, 0);
	table |= ICE_UP_TABLE_TRANSLATE(1, 1);
	table |= ICE_UP_TABLE_TRANSLATE(2, 2);
	table |= ICE_UP_TABLE_TRANSLATE(3, 3);
	table |= ICE_UP_TABLE_TRANSLATE(4, 4);
	table |= ICE_UP_TABLE_TRANSLATE(5, 5);
	table |= ICE_UP_TABLE_TRANSLATE(6, 6);
	table |= ICE_UP_TABLE_TRANSLATE(7, 7);
	ctxt->info.ingress_table = cpu_to_le32(table);
	ctxt->info.egress_table = cpu_to_le32(table);
	/* Have 1:1 UP mapping for outer to inner UP table */
	ctxt->info.outer_up_table = cpu_to_le32(table);
	/* No Outer tag support outer_tag_flags remains to zero */
}

/**
 * ice_vsi_setup_q_map - Setup a VSI queue map
 * @vsi: the VSI being configured
 * @ctxt: VSI context structure
 */
static void ice_vsi_setup_q_map(struct ice_vsi *vsi, struct ice_vsi_ctx *ctxt)
{
749 750
	u16 offset = 0, qmap = 0, tx_count = 0, pow = 0;
	u16 num_txq_per_tc, num_rxq_per_tc;
751 752 753
	u16 qcount_tx = vsi->alloc_txq;
	u16 qcount_rx = vsi->alloc_rxq;
	bool ena_tc0 = false;
754
	u8 netdev_tc = 0;
755 756 757 758 759 760 761 762 763 764 765 766 767 768 769
	int i;

	/* at least TC0 should be enabled by default */
	if (vsi->tc_cfg.numtc) {
		if (!(vsi->tc_cfg.ena_tc & BIT(0)))
			ena_tc0 = true;
	} else {
		ena_tc0 = true;
	}

	if (ena_tc0) {
		vsi->tc_cfg.numtc++;
		vsi->tc_cfg.ena_tc |= 1;
	}

770 771 772 773 774 775 776 777 778
	num_rxq_per_tc = min_t(u16, qcount_rx / vsi->tc_cfg.numtc, ICE_MAX_RXQS_PER_TC);
	if (!num_rxq_per_tc)
		num_rxq_per_tc = 1;
	num_txq_per_tc = qcount_tx / vsi->tc_cfg.numtc;
	if (!num_txq_per_tc)
		num_txq_per_tc = 1;

	/* find the (rounded up) power-of-2 of qcount */
	pow = (u16)order_base_2(num_rxq_per_tc);
779 780 781 782 783 784 785 786 787 788 789 790

	/* TC mapping is a function of the number of Rx queues assigned to the
	 * VSI for each traffic class and the offset of these queues.
	 * The first 10 bits are for queue offset for TC0, next 4 bits for no:of
	 * queues allocated to TC0. No:of queues is a power-of-2.
	 *
	 * If TC is not enabled, the queue offset is set to 0, and allocate one
	 * queue, this way, traffic for the given TC will be sent to the default
	 * queue.
	 *
	 * Setup number and offset of Rx queues for all TCs for the VSI
	 */
791
	ice_for_each_traffic_class(i) {
792 793 794
		if (!(vsi->tc_cfg.ena_tc & BIT(i))) {
			/* TC is not enabled */
			vsi->tc_cfg.tc_info[i].qoffset = 0;
795 796 797
			vsi->tc_cfg.tc_info[i].qcount_rx = 1;
			vsi->tc_cfg.tc_info[i].qcount_tx = 1;
			vsi->tc_cfg.tc_info[i].netdev_tc = 0;
798 799 800 801 802 803
			ctxt->info.tc_mapping[i] = 0;
			continue;
		}

		/* TC is enabled */
		vsi->tc_cfg.tc_info[i].qoffset = offset;
804 805
		vsi->tc_cfg.tc_info[i].qcount_rx = num_rxq_per_tc;
		vsi->tc_cfg.tc_info[i].qcount_tx = num_txq_per_tc;
806
		vsi->tc_cfg.tc_info[i].netdev_tc = netdev_tc++;
807 808 809 810 811

		qmap = ((offset << ICE_AQ_VSI_TC_Q_OFFSET_S) &
			ICE_AQ_VSI_TC_Q_OFFSET_M) |
			((pow << ICE_AQ_VSI_TC_Q_NUM_S) &
			 ICE_AQ_VSI_TC_Q_NUM_M);
812 813
		offset += num_rxq_per_tc;
		tx_count += num_txq_per_tc;
814 815
		ctxt->info.tc_mapping[i] = cpu_to_le16(qmap);
	}
K
Kiran Patil 已提交
816 817 818 819 820 821 822 823 824 825

	/* if offset is non-zero, means it is calculated correctly based on
	 * enabled TCs for a given VSI otherwise qcount_rx will always
	 * be correct and non-zero because it is based off - VSI's
	 * allocated Rx queues which is at least 1 (hence qcount_tx will be
	 * at least 1)
	 */
	if (offset)
		vsi->num_rxq = offset;
	else
826
		vsi->num_rxq = num_rxq_per_tc;
K
Kiran Patil 已提交
827

828
	vsi->num_txq = tx_count;
829

830
	if (vsi->type == ICE_VSI_VF && vsi->num_txq != vsi->num_rxq) {
A
Anirudh Venkataramanan 已提交
831
		dev_dbg(ice_pf_to_dev(vsi->back), "VF VSI should have same number of Tx and Rx queues. Hence making them equal\n");
832 833 834 835 836 837
		/* since there is a chance that num_rxq could have been changed
		 * in the above for loop, make num_txq equal to num_rxq.
		 */
		vsi->num_txq = vsi->num_rxq;
	}

838 839 840 841 842 843 844 845 846 847
	/* Rx queue mapping */
	ctxt->info.mapping_flags |= cpu_to_le16(ICE_AQ_VSI_Q_MAP_CONTIG);
	/* q_mapping buffer holds the info for the first queue allocated for
	 * this VSI in the PF space and also the number of queues associated
	 * with this VSI.
	 */
	ctxt->info.q_mapping[0] = cpu_to_le16(vsi->rxq_map[0]);
	ctxt->info.q_mapping[1] = cpu_to_le16(vsi->num_rxq);
}

848 849 850 851 852 853 854 855 856 857
/**
 * ice_set_fd_vsi_ctx - Set FD VSI context before adding a VSI
 * @ctxt: the VSI context being set
 * @vsi: the VSI being configured
 */
static void ice_set_fd_vsi_ctx(struct ice_vsi_ctx *ctxt, struct ice_vsi *vsi)
{
	u8 dflt_q_group, dflt_q_prio;
	u16 dflt_q, report_q, val;

858 859
	if (vsi->type != ICE_VSI_PF && vsi->type != ICE_VSI_CTRL &&
	    vsi->type != ICE_VSI_VF)
860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893
		return;

	val = ICE_AQ_VSI_PROP_FLOW_DIR_VALID;
	ctxt->info.valid_sections |= cpu_to_le16(val);
	dflt_q = 0;
	dflt_q_group = 0;
	report_q = 0;
	dflt_q_prio = 0;

	/* enable flow director filtering/programming */
	val = ICE_AQ_VSI_FD_ENABLE | ICE_AQ_VSI_FD_PROG_ENABLE;
	ctxt->info.fd_options = cpu_to_le16(val);
	/* max of allocated flow director filters */
	ctxt->info.max_fd_fltr_dedicated =
			cpu_to_le16(vsi->num_gfltr);
	/* max of shared flow director filters any VSI may program */
	ctxt->info.max_fd_fltr_shared =
			cpu_to_le16(vsi->num_bfltr);
	/* default queue index within the VSI of the default FD */
	val = ((dflt_q << ICE_AQ_VSI_FD_DEF_Q_S) &
	       ICE_AQ_VSI_FD_DEF_Q_M);
	/* target queue or queue group to the FD filter */
	val |= ((dflt_q_group << ICE_AQ_VSI_FD_DEF_GRP_S) &
		ICE_AQ_VSI_FD_DEF_GRP_M);
	ctxt->info.fd_def_q = cpu_to_le16(val);
	/* queue index on which FD filter completion is reported */
	val = ((report_q << ICE_AQ_VSI_FD_REPORT_Q_S) &
	       ICE_AQ_VSI_FD_REPORT_Q_M);
	/* priority of the default qindex action */
	val |= ((dflt_q_prio << ICE_AQ_VSI_FD_DEF_PRIORITY_S) &
		ICE_AQ_VSI_FD_DEF_PRIORITY_M);
	ctxt->info.fd_report_opt = cpu_to_le16(val);
}

894 895 896 897 898 899 900 901
/**
 * ice_set_rss_vsi_ctx - Set RSS VSI context before adding a VSI
 * @ctxt: the VSI context being set
 * @vsi: the VSI being configured
 */
static void ice_set_rss_vsi_ctx(struct ice_vsi_ctx *ctxt, struct ice_vsi *vsi)
{
	u8 lut_type, hash_type;
B
Brett Creeley 已提交
902
	struct device *dev;
903 904 905
	struct ice_pf *pf;

	pf = vsi->back;
B
Brett Creeley 已提交
906
	dev = ice_pf_to_dev(pf);
907 908 909 910 911 912 913

	switch (vsi->type) {
	case ICE_VSI_PF:
		/* PF VSI will inherit RSS instance of PF */
		lut_type = ICE_AQ_VSI_Q_OPT_RSS_LUT_PF;
		hash_type = ICE_AQ_VSI_Q_OPT_RSS_TPLZ;
		break;
914 915 916 917 918
	case ICE_VSI_VF:
		/* VF VSI will gets a small RSS table which is a VSI LUT type */
		lut_type = ICE_AQ_VSI_Q_OPT_RSS_LUT_VSI;
		hash_type = ICE_AQ_VSI_Q_OPT_RSS_TPLZ;
		break;
919
	default:
B
Brett Creeley 已提交
920
		dev_dbg(dev, "Unsupported VSI type %s\n",
921
			ice_vsi_type_str(vsi->type));
922
		return;
923 924 925 926 927 928 929 930 931 932 933
	}

	ctxt->info.q_opt_rss = ((lut_type << ICE_AQ_VSI_Q_OPT_RSS_LUT_S) &
				ICE_AQ_VSI_Q_OPT_RSS_LUT_M) |
				((hash_type << ICE_AQ_VSI_Q_OPT_RSS_HASH_S) &
				 ICE_AQ_VSI_Q_OPT_RSS_HASH_M);
}

/**
 * ice_vsi_init - Create and initialize a VSI
 * @vsi: the VSI being configured
934
 * @init_vsi: is this call creating a VSI
935 936 937 938
 *
 * This initializes a VSI context depending on the VSI type to be added and
 * passes it down to the add_vsi aq command to create a new VSI.
 */
939
static int ice_vsi_init(struct ice_vsi *vsi, bool init_vsi)
940 941 942
{
	struct ice_pf *pf = vsi->back;
	struct ice_hw *hw = &pf->hw;
943
	struct ice_vsi_ctx *ctxt;
944
	struct device *dev;
945 946
	int ret = 0;

947
	dev = ice_pf_to_dev(pf);
948
	ctxt = kzalloc(sizeof(*ctxt), GFP_KERNEL);
949 950 951
	if (!ctxt)
		return -ENOMEM;

952
	switch (vsi->type) {
953
	case ICE_VSI_CTRL:
954
	case ICE_VSI_LB:
955
	case ICE_VSI_PF:
956
		ctxt->flags = ICE_AQ_VSI_TYPE_PF;
957
		break;
958
	case ICE_VSI_VF:
959
		ctxt->flags = ICE_AQ_VSI_TYPE_VF;
960
		/* VF number here is the absolute VF number (0-255) */
961
		ctxt->vf_num = vsi->vf_id + hw->func_caps.vf_base_id;
962
		break;
963
	default:
964 965
		ret = -ENODEV;
		goto out;
966 967
	}

968
	ice_set_dflt_vsi_ctx(ctxt);
969 970
	if (test_bit(ICE_FLAG_FD_ENA, pf->flags))
		ice_set_fd_vsi_ctx(ctxt, vsi);
971 972
	/* if the switch is in VEB mode, allow VSI loopback */
	if (vsi->vsw->bridge_mode == BRIDGE_MODE_VEB)
973
		ctxt->info.sw_flags |= ICE_AQ_VSI_SW_FLAG_ALLOW_LB;
974 975

	/* Set LUT type and HASH type if RSS is enabled */
976 977
	if (test_bit(ICE_FLAG_RSS_ENA, pf->flags) &&
	    vsi->type != ICE_VSI_CTRL) {
978
		ice_set_rss_vsi_ctx(ctxt, vsi);
979 980 981 982 983 984 985
		/* if updating VSI context, make sure to set valid_section:
		 * to indicate which section of VSI context being updated
		 */
		if (!init_vsi)
			ctxt->info.valid_sections |=
				cpu_to_le16(ICE_AQ_VSI_PROP_Q_OPT_VALID);
	}
986

987 988
	ctxt->info.sw_id = vsi->port_info->sw_id;
	ice_vsi_setup_q_map(vsi, ctxt);
989 990 991 992 993 994
	if (!init_vsi) /* means VSI being updated */
		/* must to indicate which section of VSI context are
		 * being modified
		 */
		ctxt->info.valid_sections |=
			cpu_to_le16(ICE_AQ_VSI_PROP_RXQ_MAP_VALID);
995

B
Brett Creeley 已提交
996 997 998 999
	/* enable/disable MAC and VLAN anti-spoof when spoofchk is on/off
	 * respectively
	 */
	if (vsi->type == ICE_VSI_VF) {
1000 1001
		ctxt->info.valid_sections |=
			cpu_to_le16(ICE_AQ_VSI_PROP_SECURITY_VALID);
B
Brett Creeley 已提交
1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012
		if (pf->vf[vsi->vf_id].spoofchk) {
			ctxt->info.sec_flags |=
				ICE_AQ_VSI_SEC_FLAG_ENA_MAC_ANTI_SPOOF |
				(ICE_AQ_VSI_SEC_TX_VLAN_PRUNE_ENA <<
				 ICE_AQ_VSI_SEC_TX_PRUNE_ENA_S);
		} else {
			ctxt->info.sec_flags &=
				~(ICE_AQ_VSI_SEC_FLAG_ENA_MAC_ANTI_SPOOF |
				  (ICE_AQ_VSI_SEC_TX_VLAN_PRUNE_ENA <<
				   ICE_AQ_VSI_SEC_TX_PRUNE_ENA_S));
		}
1013 1014
	}

1015 1016 1017 1018 1019 1020 1021
	/* Allow control frames out of main VSI */
	if (vsi->type == ICE_VSI_PF) {
		ctxt->info.sec_flags |= ICE_AQ_VSI_SEC_FLAG_ALLOW_DEST_OVRD;
		ctxt->info.valid_sections |=
			cpu_to_le16(ICE_AQ_VSI_PROP_SECURITY_VALID);
	}

1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035
	if (init_vsi) {
		ret = ice_add_vsi(hw, vsi->idx, ctxt, NULL);
		if (ret) {
			dev_err(dev, "Add VSI failed, err %d\n", ret);
			ret = -EIO;
			goto out;
		}
	} else {
		ret = ice_update_vsi(hw, vsi->idx, ctxt, NULL);
		if (ret) {
			dev_err(dev, "Update VSI failed, err %d\n", ret);
			ret = -EIO;
			goto out;
		}
1036 1037 1038
	}

	/* keep context for update VSI operations */
1039
	vsi->info = ctxt->info;
1040 1041

	/* record VSI number returned */
1042
	vsi->vsi_num = ctxt->vsi_num;
1043

1044 1045
out:
	kfree(ctxt);
1046 1047 1048
	return ret;
}

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
/**
 * ice_free_res - free a block of resources
 * @res: pointer to the resource
 * @index: starting index previously returned by ice_get_res
 * @id: identifier to track owner
 *
 * Returns number of resources freed
 */
int ice_free_res(struct ice_res_tracker *res, u16 index, u16 id)
{
	int count = 0;
	int i;

	if (!res || index >= res->end)
		return -EINVAL;

	id |= ICE_RES_VALID_BIT;
	for (i = index; i < res->end && res->list[i] == id; i++) {
		res->list[i] = 0;
		count++;
	}

	return count;
}

/**
 * ice_search_res - Search the tracker for a block of resources
 * @res: pointer to the resource
 * @needed: size of the block needed
 * @id: identifier to track owner
 *
 * Returns the base item index of the block, or -ENOMEM for error
 */
static int ice_search_res(struct ice_res_tracker *res, u16 needed, u16 id)
{
K
Karol Kolacinski 已提交
1084
	u16 start = 0, end = 0;
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 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151

	if (needed > res->end)
		return -ENOMEM;

	id |= ICE_RES_VALID_BIT;

	do {
		/* skip already allocated entries */
		if (res->list[end++] & ICE_RES_VALID_BIT) {
			start = end;
			if ((start + needed) > res->end)
				break;
		}

		if (end == (start + needed)) {
			int i = start;

			/* there was enough, so assign it to the requestor */
			while (i != end)
				res->list[i++] = id;

			return start;
		}
	} while (end < res->end);

	return -ENOMEM;
}

/**
 * ice_get_free_res_count - Get free count from a resource tracker
 * @res: Resource tracker instance
 */
static u16 ice_get_free_res_count(struct ice_res_tracker *res)
{
	u16 i, count = 0;

	for (i = 0; i < res->end; i++)
		if (!(res->list[i] & ICE_RES_VALID_BIT))
			count++;

	return count;
}

/**
 * ice_get_res - get a block of resources
 * @pf: board private structure
 * @res: pointer to the resource
 * @needed: size of the block needed
 * @id: identifier to track owner
 *
 * Returns the base item index of the block, or negative for error
 */
int
ice_get_res(struct ice_pf *pf, struct ice_res_tracker *res, u16 needed, u16 id)
{
	if (!res || !pf)
		return -EINVAL;

	if (!needed || needed > res->num_entries || id >= ICE_RES_VALID_BIT) {
		dev_err(ice_pf_to_dev(pf), "param err: needed=%d, num_entries = %d id=0x%04x\n",
			needed, res->num_entries, id);
		return -EINVAL;
	}

	return ice_search_res(res, needed, id);
}

1152 1153 1154 1155 1156 1157 1158 1159 1160 1161
/**
 * ice_vsi_setup_vector_base - Set up the base vector for the given VSI
 * @vsi: ptr to the VSI
 *
 * This should only be called after ice_vsi_alloc() which allocates the
 * corresponding SW VSI structure and initializes num_queue_pairs for the
 * newly allocated VSI.
 *
 * Returns 0 on success or negative on failure
 */
1162
static int ice_vsi_setup_vector_base(struct ice_vsi *vsi)
1163 1164
{
	struct ice_pf *pf = vsi->back;
B
Brett Creeley 已提交
1165
	struct device *dev;
B
Brett Creeley 已提交
1166
	u16 num_q_vectors;
K
Karol Kolacinski 已提交
1167
	int base;
1168

B
Brett Creeley 已提交
1169
	dev = ice_pf_to_dev(pf);
B
Brett Creeley 已提交
1170 1171 1172 1173 1174
	/* SRIOV doesn't grab irq_tracker entries for each VSI */
	if (vsi->type == ICE_VSI_VF)
		return 0;

	if (vsi->base_vector) {
B
Brett Creeley 已提交
1175
		dev_dbg(dev, "VSI %d has non-zero base vector %d\n",
B
Brett Creeley 已提交
1176
			vsi->vsi_num, vsi->base_vector);
1177 1178 1179
		return -EEXIST;
	}

B
Brett Creeley 已提交
1180 1181
	num_q_vectors = vsi->num_q_vectors;
	/* reserve slots from OS requested IRQs */
1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199
	if (vsi->type == ICE_VSI_CTRL && vsi->vf_id != ICE_INVAL_VFID) {
		struct ice_vf *vf;
		int i;

		ice_for_each_vf(pf, i) {
			vf = &pf->vf[i];
			if (i != vsi->vf_id && vf->ctrl_vsi_idx != ICE_NO_VSI) {
				base = pf->vsi[vf->ctrl_vsi_idx]->base_vector;
				break;
			}
		}
		if (i == pf->num_alloc_vfs)
			base = ice_get_res(pf, pf->irq_tracker, num_q_vectors,
					   ICE_RES_VF_CTRL_VEC_ID);
	} else {
		base = ice_get_res(pf, pf->irq_tracker, num_q_vectors,
				   vsi->idx);
	}
K
Karol Kolacinski 已提交
1200 1201

	if (base < 0) {
1202 1203 1204
		dev_err(dev, "%d MSI-X interrupts available. %s %d failed to get %d MSI-X vectors\n",
			ice_get_free_res_count(pf->irq_tracker),
			ice_vsi_type_str(vsi->type), vsi->idx, num_q_vectors);
1205 1206
		return -ENOENT;
	}
K
Karol Kolacinski 已提交
1207
	vsi->base_vector = (u16)base;
B
Brett Creeley 已提交
1208
	pf->num_avail_sw_msix -= num_q_vectors;
1209

1210 1211 1212
	return 0;
}

1213 1214 1215 1216
/**
 * ice_vsi_clear_rings - Deallocates the Tx and Rx rings for VSI
 * @vsi: the VSI having rings deallocated
 */
1217
static void ice_vsi_clear_rings(struct ice_vsi *vsi)
1218 1219 1220
{
	int i;

1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232
	/* Avoid stale references by clearing map from vector to ring */
	if (vsi->q_vectors) {
		ice_for_each_q_vector(vsi, i) {
			struct ice_q_vector *q_vector = vsi->q_vectors[i];

			if (q_vector) {
				q_vector->tx.ring = NULL;
				q_vector->rx.ring = NULL;
			}
		}
	}

1233 1234 1235 1236
	if (vsi->tx_rings) {
		for (i = 0; i < vsi->alloc_txq; i++) {
			if (vsi->tx_rings[i]) {
				kfree_rcu(vsi->tx_rings[i], rcu);
1237
				WRITE_ONCE(vsi->tx_rings[i], NULL);
1238 1239 1240 1241 1242 1243 1244
			}
		}
	}
	if (vsi->rx_rings) {
		for (i = 0; i < vsi->alloc_rxq; i++) {
			if (vsi->rx_rings[i]) {
				kfree_rcu(vsi->rx_rings[i], rcu);
1245
				WRITE_ONCE(vsi->rx_rings[i], NULL);
1246 1247 1248 1249 1250 1251 1252 1253 1254
			}
		}
	}
}

/**
 * ice_vsi_alloc_rings - Allocates Tx and Rx rings for the VSI
 * @vsi: VSI which is having rings allocated
 */
1255
static int ice_vsi_alloc_rings(struct ice_vsi *vsi)
1256 1257
{
	struct ice_pf *pf = vsi->back;
B
Brett Creeley 已提交
1258
	struct device *dev;
K
Karol Kolacinski 已提交
1259
	u16 i;
1260

B
Brett Creeley 已提交
1261
	dev = ice_pf_to_dev(pf);
1262
	/* Allocate Tx rings */
1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275
	for (i = 0; i < vsi->alloc_txq; i++) {
		struct ice_ring *ring;

		/* allocate with kzalloc(), free with kfree_rcu() */
		ring = kzalloc(sizeof(*ring), GFP_KERNEL);

		if (!ring)
			goto err_out;

		ring->q_index = i;
		ring->reg_idx = vsi->txq_map[i];
		ring->ring_active = false;
		ring->vsi = vsi;
B
Brett Creeley 已提交
1276
		ring->dev = dev;
1277
		ring->count = vsi->num_tx_desc;
1278
		WRITE_ONCE(vsi->tx_rings[i], ring);
1279 1280
	}

1281
	/* Allocate Rx rings */
1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294
	for (i = 0; i < vsi->alloc_rxq; i++) {
		struct ice_ring *ring;

		/* allocate with kzalloc(), free with kfree_rcu() */
		ring = kzalloc(sizeof(*ring), GFP_KERNEL);
		if (!ring)
			goto err_out;

		ring->q_index = i;
		ring->reg_idx = vsi->rxq_map[i];
		ring->ring_active = false;
		ring->vsi = vsi;
		ring->netdev = vsi->netdev;
B
Brett Creeley 已提交
1295
		ring->dev = dev;
1296
		ring->count = vsi->num_rx_desc;
1297
		WRITE_ONCE(vsi->rx_rings[i], ring);
1298 1299 1300 1301 1302 1303 1304 1305 1306
	}

	return 0;

err_out:
	ice_vsi_clear_rings(vsi);
	return -ENOMEM;
}

1307 1308 1309 1310 1311 1312 1313 1314 1315
/**
 * ice_vsi_manage_rss_lut - disable/enable RSS
 * @vsi: the VSI being changed
 * @ena: boolean value indicating if this is an enable or disable request
 *
 * In the event of disable request for RSS, this function will zero out RSS
 * LUT, while in the event of enable request for RSS, it will reconfigure RSS
 * LUT.
 */
1316
void ice_vsi_manage_rss_lut(struct ice_vsi *vsi, bool ena)
1317 1318 1319
{
	u8 *lut;

1320
	lut = kzalloc(vsi->rss_table_size, GFP_KERNEL);
1321
	if (!lut)
1322
		return;
1323 1324 1325 1326 1327 1328 1329 1330 1331

	if (ena) {
		if (vsi->rss_lut_user)
			memcpy(lut, vsi->rss_lut_user, vsi->rss_table_size);
		else
			ice_fill_rss_lut(lut, vsi->rss_table_size,
					 vsi->rss_size);
	}

1332
	ice_set_rss_lut(vsi, lut, vsi->rss_table_size);
1333
	kfree(lut);
1334 1335
}

1336 1337 1338 1339 1340 1341 1342
/**
 * ice_vsi_cfg_rss_lut_key - Configure RSS params for a VSI
 * @vsi: VSI to be configured
 */
static int ice_vsi_cfg_rss_lut_key(struct ice_vsi *vsi)
{
	struct ice_pf *pf = vsi->back;
B
Brett Creeley 已提交
1343
	struct device *dev;
1344 1345
	u8 *lut, *key;
	int err;
1346

B
Brett Creeley 已提交
1347
	dev = ice_pf_to_dev(pf);
K
Karol Kolacinski 已提交
1348
	vsi->rss_size = min_t(u16, vsi->rss_size, vsi->num_rxq);
1349

1350
	lut = kzalloc(vsi->rss_table_size, GFP_KERNEL);
1351 1352 1353 1354 1355 1356 1357 1358
	if (!lut)
		return -ENOMEM;

	if (vsi->rss_lut_user)
		memcpy(lut, vsi->rss_lut_user, vsi->rss_table_size);
	else
		ice_fill_rss_lut(lut, vsi->rss_table_size, vsi->rss_size);

1359 1360 1361
	err = ice_set_rss_lut(vsi, lut, vsi->rss_table_size);
	if (err) {
		dev_err(dev, "set_rss_lut failed, error %d\n", err);
1362 1363 1364
		goto ice_vsi_cfg_rss_exit;
	}

1365
	key = kzalloc(ICE_GET_SET_RSS_KEY_EXTEND_KEY_SIZE, GFP_KERNEL);
1366 1367 1368 1369 1370 1371
	if (!key) {
		err = -ENOMEM;
		goto ice_vsi_cfg_rss_exit;
	}

	if (vsi->rss_hkey_user)
1372
		memcpy(key, vsi->rss_hkey_user, ICE_GET_SET_RSS_KEY_EXTEND_KEY_SIZE);
1373
	else
1374
		netdev_rss_key_fill((void *)key, ICE_GET_SET_RSS_KEY_EXTEND_KEY_SIZE);
1375

1376 1377 1378
	err = ice_set_rss_key(vsi, key);
	if (err)
		dev_err(dev, "set_rss_key failed, error %d\n", err);
1379

1380
	kfree(key);
1381
ice_vsi_cfg_rss_exit:
1382
	kfree(lut);
1383 1384 1385
	return err;
}

1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408
/**
 * ice_vsi_set_vf_rss_flow_fld - Sets VF VSI RSS input set for different flows
 * @vsi: VSI to be configured
 *
 * This function will only be called during the VF VSI setup. Upon successful
 * completion of package download, this function will configure default RSS
 * input sets for VF VSI.
 */
static void ice_vsi_set_vf_rss_flow_fld(struct ice_vsi *vsi)
{
	struct ice_pf *pf = vsi->back;
	enum ice_status status;
	struct device *dev;

	dev = ice_pf_to_dev(pf);
	if (ice_is_safe_mode(pf)) {
		dev_dbg(dev, "Advanced RSS disabled. Package download failed, vsi num = %d\n",
			vsi->vsi_num);
		return;
	}

	status = ice_add_avf_rss_cfg(&pf->hw, vsi->idx, ICE_DEFAULT_RSS_HENA);
	if (status)
1409 1410
		dev_dbg(dev, "ice_add_avf_rss_cfg failed for vsi = %d, error = %s\n",
			vsi->vsi_num, ice_stat_str(status));
1411 1412
}

1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441
/**
 * ice_vsi_set_rss_flow_fld - Sets RSS input set for different flows
 * @vsi: VSI to be configured
 *
 * This function will only be called after successful download package call
 * during initialization of PF. Since the downloaded package will erase the
 * RSS section, this function will configure RSS input sets for different
 * flow types. The last profile added has the highest priority, therefore 2
 * tuple profiles (i.e. IPv4 src/dst) are added before 4 tuple profiles
 * (i.e. IPv4 src/dst TCP src/dst port).
 */
static void ice_vsi_set_rss_flow_fld(struct ice_vsi *vsi)
{
	u16 vsi_handle = vsi->idx, vsi_num = vsi->vsi_num;
	struct ice_pf *pf = vsi->back;
	struct ice_hw *hw = &pf->hw;
	enum ice_status status;
	struct device *dev;

	dev = ice_pf_to_dev(pf);
	if (ice_is_safe_mode(pf)) {
		dev_dbg(dev, "Advanced RSS disabled. Package download failed, vsi num = %d\n",
			vsi_num);
		return;
	}
	/* configure RSS for IPv4 with input set IP src/dst */
	status = ice_add_rss_cfg(hw, vsi_handle, ICE_FLOW_HASH_IPV4,
				 ICE_FLOW_SEG_HDR_IPV4);
	if (status)
1442 1443
		dev_dbg(dev, "ice_add_rss_cfg failed for ipv4 flow, vsi = %d, error = %s\n",
			vsi_num, ice_stat_str(status));
1444 1445 1446 1447 1448

	/* configure RSS for IPv6 with input set IPv6 src/dst */
	status = ice_add_rss_cfg(hw, vsi_handle, ICE_FLOW_HASH_IPV6,
				 ICE_FLOW_SEG_HDR_IPV6);
	if (status)
1449 1450
		dev_dbg(dev, "ice_add_rss_cfg failed for ipv6 flow, vsi = %d, error = %s\n",
			vsi_num, ice_stat_str(status));
1451 1452 1453 1454 1455

	/* configure RSS for tcp4 with input set IP src/dst, TCP src/dst */
	status = ice_add_rss_cfg(hw, vsi_handle, ICE_HASH_TCP_IPV4,
				 ICE_FLOW_SEG_HDR_TCP | ICE_FLOW_SEG_HDR_IPV4);
	if (status)
1456 1457
		dev_dbg(dev, "ice_add_rss_cfg failed for tcp4 flow, vsi = %d, error = %s\n",
			vsi_num, ice_stat_str(status));
1458 1459 1460 1461 1462

	/* configure RSS for udp4 with input set IP src/dst, UDP src/dst */
	status = ice_add_rss_cfg(hw, vsi_handle, ICE_HASH_UDP_IPV4,
				 ICE_FLOW_SEG_HDR_UDP | ICE_FLOW_SEG_HDR_IPV4);
	if (status)
1463 1464
		dev_dbg(dev, "ice_add_rss_cfg failed for udp4 flow, vsi = %d, error = %s\n",
			vsi_num, ice_stat_str(status));
1465 1466 1467 1468 1469

	/* configure RSS for sctp4 with input set IP src/dst */
	status = ice_add_rss_cfg(hw, vsi_handle, ICE_FLOW_HASH_IPV4,
				 ICE_FLOW_SEG_HDR_SCTP | ICE_FLOW_SEG_HDR_IPV4);
	if (status)
1470 1471
		dev_dbg(dev, "ice_add_rss_cfg failed for sctp4 flow, vsi = %d, error = %s\n",
			vsi_num, ice_stat_str(status));
1472 1473 1474 1475 1476

	/* configure RSS for tcp6 with input set IPv6 src/dst, TCP src/dst */
	status = ice_add_rss_cfg(hw, vsi_handle, ICE_HASH_TCP_IPV6,
				 ICE_FLOW_SEG_HDR_TCP | ICE_FLOW_SEG_HDR_IPV6);
	if (status)
1477 1478
		dev_dbg(dev, "ice_add_rss_cfg failed for tcp6 flow, vsi = %d, error = %s\n",
			vsi_num, ice_stat_str(status));
1479 1480 1481 1482 1483

	/* configure RSS for udp6 with input set IPv6 src/dst, UDP src/dst */
	status = ice_add_rss_cfg(hw, vsi_handle, ICE_HASH_UDP_IPV6,
				 ICE_FLOW_SEG_HDR_UDP | ICE_FLOW_SEG_HDR_IPV6);
	if (status)
1484 1485
		dev_dbg(dev, "ice_add_rss_cfg failed for udp6 flow, vsi = %d, error = %s\n",
			vsi_num, ice_stat_str(status));
1486 1487 1488 1489 1490

	/* configure RSS for sctp6 with input set IPv6 src/dst */
	status = ice_add_rss_cfg(hw, vsi_handle, ICE_FLOW_HASH_IPV6,
				 ICE_FLOW_SEG_HDR_SCTP | ICE_FLOW_SEG_HDR_IPV6);
	if (status)
1491 1492
		dev_dbg(dev, "ice_add_rss_cfg failed for sctp6 flow, vsi = %d, error = %s\n",
			vsi_num, ice_stat_str(status));
1493 1494
}

1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506
/**
 * ice_pf_state_is_nominal - checks the PF for nominal state
 * @pf: pointer to PF to check
 *
 * Check the PF's state for a collection of bits that would indicate
 * the PF is in a state that would inhibit normal operation for
 * driver functionality.
 *
 * Returns true if PF is in a nominal state, false otherwise
 */
bool ice_pf_state_is_nominal(struct ice_pf *pf)
{
1507
	DECLARE_BITMAP(check_bits, ICE_STATE_NBITS) = { 0 };
1508 1509 1510 1511

	if (!pf)
		return false;

1512 1513
	bitmap_set(check_bits, 0, ICE_STATE_NOMINAL_CHECK_BITS);
	if (bitmap_intersects(pf->state, check_bits, ICE_STATE_NBITS))
1514 1515 1516 1517 1518
		return false;

	return true;
}

1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531
/**
 * ice_update_eth_stats - Update VSI-specific ethernet statistics counters
 * @vsi: the VSI to be updated
 */
void ice_update_eth_stats(struct ice_vsi *vsi)
{
	struct ice_eth_stats *prev_es, *cur_es;
	struct ice_hw *hw = &vsi->back->hw;
	u16 vsi_num = vsi->vsi_num;    /* HW absolute index of a VSI */

	prev_es = &vsi->eth_stats_prev;
	cur_es = &vsi->eth_stats;

1532 1533
	ice_stat_update40(hw, GLV_GORCL(vsi_num), vsi->stat_offsets_loaded,
			  &prev_es->rx_bytes, &cur_es->rx_bytes);
1534

1535 1536
	ice_stat_update40(hw, GLV_UPRCL(vsi_num), vsi->stat_offsets_loaded,
			  &prev_es->rx_unicast, &cur_es->rx_unicast);
1537

1538 1539
	ice_stat_update40(hw, GLV_MPRCL(vsi_num), vsi->stat_offsets_loaded,
			  &prev_es->rx_multicast, &cur_es->rx_multicast);
1540

1541 1542
	ice_stat_update40(hw, GLV_BPRCL(vsi_num), vsi->stat_offsets_loaded,
			  &prev_es->rx_broadcast, &cur_es->rx_broadcast);
1543 1544 1545 1546

	ice_stat_update32(hw, GLV_RDPC(vsi_num), vsi->stat_offsets_loaded,
			  &prev_es->rx_discards, &cur_es->rx_discards);

1547 1548
	ice_stat_update40(hw, GLV_GOTCL(vsi_num), vsi->stat_offsets_loaded,
			  &prev_es->tx_bytes, &cur_es->tx_bytes);
1549

1550 1551
	ice_stat_update40(hw, GLV_UPTCL(vsi_num), vsi->stat_offsets_loaded,
			  &prev_es->tx_unicast, &cur_es->tx_unicast);
1552

1553 1554
	ice_stat_update40(hw, GLV_MPTCL(vsi_num), vsi->stat_offsets_loaded,
			  &prev_es->tx_multicast, &cur_es->tx_multicast);
1555

1556 1557
	ice_stat_update40(hw, GLV_BPTCL(vsi_num), vsi->stat_offsets_loaded,
			  &prev_es->tx_broadcast, &cur_es->tx_broadcast);
1558 1559 1560 1561 1562 1563 1564 1565 1566 1567

	ice_stat_update32(hw, GLV_TEPC(vsi_num), vsi->stat_offsets_loaded,
			  &prev_es->tx_errors, &cur_es->tx_errors);

	vsi->stat_offsets_loaded = true;
}

/**
 * ice_vsi_add_vlan - Add VSI membership for given VLAN
 * @vsi: the VSI being configured
1568
 * @vid: VLAN ID to be added
1569
 * @action: filter action to be performed on match
1570
 */
1571 1572
int
ice_vsi_add_vlan(struct ice_vsi *vsi, u16 vid, enum ice_sw_fwd_act_type action)
1573 1574
{
	struct ice_pf *pf = vsi->back;
B
Brett Creeley 已提交
1575
	struct device *dev;
1576 1577
	int err = 0;

B
Brett Creeley 已提交
1578
	dev = ice_pf_to_dev(pf);
1579

1580
	if (!ice_fltr_add_vlan(vsi, vid, action)) {
1581 1582
		vsi->num_vlan++;
	} else {
1583
		err = -ENODEV;
B
Brett Creeley 已提交
1584 1585
		dev_err(dev, "Failure Adding VLAN %d on VSI %i\n", vid,
			vsi->vsi_num);
1586 1587 1588 1589 1590 1591 1592 1593
	}

	return err;
}

/**
 * ice_vsi_kill_vlan - Remove VSI membership for a given VLAN
 * @vsi: the VSI being configured
1594
 * @vid: VLAN ID to be removed
1595 1596 1597 1598 1599 1600
 *
 * Returns 0 on success and negative on failure
 */
int ice_vsi_kill_vlan(struct ice_vsi *vsi, u16 vid)
{
	struct ice_pf *pf = vsi->back;
1601
	enum ice_status status;
B
Brett Creeley 已提交
1602
	struct device *dev;
1603
	int err = 0;
1604

B
Brett Creeley 已提交
1605
	dev = ice_pf_to_dev(pf);
1606

1607
	status = ice_fltr_remove_vlan(vsi, vid, ICE_FWD_TO_VSI);
1608 1609 1610
	if (!status) {
		vsi->num_vlan--;
	} else if (status == ICE_ERR_DOES_NOT_EXIST) {
1611 1612
		dev_dbg(dev, "Failed to remove VLAN %d on VSI %i, it does not exist, status: %s\n",
			vid, vsi->vsi_num, ice_stat_str(status));
1613
	} else {
1614 1615
		dev_err(dev, "Error removing VLAN %d on vsi %i error: %s\n",
			vid, vsi->vsi_num, ice_stat_str(status));
1616
		err = -EIO;
1617 1618
	}

1619
	return err;
1620 1621
}

M
Maciej Fijalkowski 已提交
1622 1623 1624 1625 1626 1627
/**
 * ice_vsi_cfg_frame_size - setup max frame size and Rx buffer length
 * @vsi: VSI
 */
void ice_vsi_cfg_frame_size(struct ice_vsi *vsi)
{
M
Maciej Fijalkowski 已提交
1628 1629 1630 1631
	if (!vsi->netdev || test_bit(ICE_FLAG_LEGACY_RX, vsi->back->flags)) {
		vsi->max_frame = ICE_AQ_SET_MAC_FRAME_SIZE_MAX;
		vsi->rx_buf_len = ICE_RXBUF_2048;
#if (PAGE_SIZE < 8192)
1632 1633
	} else if (!ICE_2K_TOO_SMALL_WITH_PADDING &&
		   (vsi->netdev->mtu <= ETH_DATA_LEN)) {
M
Maciej Fijalkowski 已提交
1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644
		vsi->max_frame = ICE_RXBUF_1536 - NET_IP_ALIGN;
		vsi->rx_buf_len = ICE_RXBUF_1536 - NET_IP_ALIGN;
#endif
	} else {
		vsi->max_frame = ICE_AQ_SET_MAC_FRAME_SIZE_MAX;
#if (PAGE_SIZE < 8192)
		vsi->rx_buf_len = ICE_RXBUF_3072;
#else
		vsi->rx_buf_len = ICE_RXBUF_2048;
#endif
	}
M
Maciej Fijalkowski 已提交
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
/**
 * ice_write_qrxflxp_cntxt - write/configure QRXFLXP_CNTXT register
 * @hw: HW pointer
 * @pf_q: index of the Rx queue in the PF's queue space
 * @rxdid: flexible descriptor RXDID
 * @prio: priority for the RXDID for this queue
 */
void
ice_write_qrxflxp_cntxt(struct ice_hw *hw, u16 pf_q, u32 rxdid, u32 prio)
{
	int regval = rd32(hw, QRXFLXP_CNTXT(pf_q));

	/* clear any previous values */
	regval &= ~(QRXFLXP_CNTXT_RXDID_IDX_M |
		    QRXFLXP_CNTXT_RXDID_PRIO_M |
		    QRXFLXP_CNTXT_TS_M);

	regval |= (rxdid << QRXFLXP_CNTXT_RXDID_IDX_S) &
		QRXFLXP_CNTXT_RXDID_IDX_M;

	regval |= (prio << QRXFLXP_CNTXT_RXDID_PRIO_S) &
		QRXFLXP_CNTXT_RXDID_PRIO_M;

	wr32(hw, QRXFLXP_CNTXT(pf_q), regval);
}

1673 1674 1675 1676 1677 1678 1679 1680 1681 1682 1683
/**
 * ice_vsi_cfg_rxqs - Configure the VSI for Rx
 * @vsi: the VSI being configured
 *
 * Return 0 on success and a negative value on error
 * Configure the Rx VSI for operation.
 */
int ice_vsi_cfg_rxqs(struct ice_vsi *vsi)
{
	u16 i;

1684 1685 1686
	if (vsi->type == ICE_VSI_VF)
		goto setup_rings;

M
Maciej Fijalkowski 已提交
1687
	ice_vsi_cfg_frame_size(vsi);
1688
setup_rings:
1689
	/* set up individual rings */
1690 1691
	for (i = 0; i < vsi->num_rxq; i++) {
		int err;
1692

1693 1694
		err = ice_setup_rx_ctx(vsi->rx_rings[i]);
		if (err) {
1695
			dev_err(ice_pf_to_dev(vsi->back), "ice_setup_rx_ctx failed for RxQ %d, err %d\n",
1696 1697 1698
				i, err);
			return err;
		}
1699
	}
1700 1701

	return 0;
1702 1703 1704 1705 1706
}

/**
 * ice_vsi_cfg_txqs - Configure the VSI for Tx
 * @vsi: the VSI being configured
1707
 * @rings: Tx ring array to be configured
1708 1709 1710 1711
 *
 * Return 0 on success and a negative value on error
 * Configure the Tx VSI for operation.
 */
1712
static int
1713
ice_vsi_cfg_txqs(struct ice_vsi *vsi, struct ice_ring **rings)
1714 1715
{
	struct ice_aqc_add_tx_qgrp *qg_buf;
1716
	u16 q_idx = 0;
1717
	int err = 0;
1718

1719
	qg_buf = kzalloc(struct_size(qg_buf, txqs, 1), GFP_KERNEL);
1720 1721 1722 1723 1724
	if (!qg_buf)
		return -ENOMEM;

	qg_buf->num_txqs = 1;

1725 1726 1727 1728
	for (q_idx = 0; q_idx < vsi->num_txq; q_idx++) {
		err = ice_vsi_cfg_txq(vsi, rings[q_idx], qg_buf);
		if (err)
			goto err_cfg_txqs;
1729
	}
1730

1731
err_cfg_txqs:
1732
	kfree(qg_buf);
1733 1734 1735
	return err;
}

1736 1737 1738 1739 1740 1741 1742 1743 1744
/**
 * ice_vsi_cfg_lan_txqs - Configure the VSI for Tx
 * @vsi: the VSI being configured
 *
 * Return 0 on success and a negative value on error
 * Configure the Tx VSI for operation.
 */
int ice_vsi_cfg_lan_txqs(struct ice_vsi *vsi)
{
1745
	return ice_vsi_cfg_txqs(vsi, vsi->tx_rings);
1746 1747
}

M
Maciej Fijalkowski 已提交
1748 1749 1750 1751 1752 1753 1754 1755 1756
/**
 * ice_vsi_cfg_xdp_txqs - Configure Tx queues dedicated for XDP in given VSI
 * @vsi: the VSI being configured
 *
 * Return 0 on success and a negative value on error
 * Configure the Tx queues dedicated for XDP in given VSI for operation.
 */
int ice_vsi_cfg_xdp_txqs(struct ice_vsi *vsi)
{
1757 1758 1759 1760 1761 1762 1763 1764
	int ret;
	int i;

	ret = ice_vsi_cfg_txqs(vsi, vsi->xdp_rings);
	if (ret)
		return ret;

	for (i = 0; i < vsi->num_xdp_txq; i++)
1765
		vsi->xdp_rings[i]->xsk_pool = ice_xsk_pool(vsi->xdp_rings[i]);
1766 1767

	return ret;
M
Maciej Fijalkowski 已提交
1768 1769
}

1770 1771 1772 1773 1774 1775 1776 1777
/**
 * ice_intrl_usec_to_reg - convert interrupt rate limit to register value
 * @intrl: interrupt rate limit in usecs
 * @gran: interrupt rate limit granularity in usecs
 *
 * This function converts a decimal interrupt rate limit in usecs to the format
 * expected by firmware.
 */
1778
static u32 ice_intrl_usec_to_reg(u8 intrl, u8 gran)
1779 1780 1781 1782 1783 1784 1785 1786
{
	u32 val = intrl / gran;

	if (val)
		return val | GLINT_RATE_INTRL_ENA_M;
	return 0;
}

1787 1788 1789 1790 1791 1792 1793 1794 1795 1796 1797 1798 1799 1800 1801 1802 1803 1804 1805 1806 1807 1808 1809 1810 1811 1812 1813 1814 1815 1816 1817 1818 1819 1820 1821 1822 1823 1824 1825 1826 1827 1828 1829 1830 1831
/**
 * ice_write_intrl - write throttle rate limit to interrupt specific register
 * @q_vector: pointer to interrupt specific structure
 * @intrl: throttle rate limit in microseconds to write
 */
void ice_write_intrl(struct ice_q_vector *q_vector, u8 intrl)
{
	struct ice_hw *hw = &q_vector->vsi->back->hw;

	wr32(hw, GLINT_RATE(q_vector->reg_idx),
	     ice_intrl_usec_to_reg(intrl, ICE_INTRL_GRAN_ABOVE_25));
}

/**
 * __ice_write_itr - write throttle rate to register
 * @q_vector: pointer to interrupt data structure
 * @rc: pointer to ring container
 * @itr: throttle rate in microseconds to write
 */
static void __ice_write_itr(struct ice_q_vector *q_vector,
			    struct ice_ring_container *rc, u16 itr)
{
	struct ice_hw *hw = &q_vector->vsi->back->hw;

	wr32(hw, GLINT_ITR(rc->itr_idx, q_vector->reg_idx),
	     ITR_REG_ALIGN(itr) >> ICE_ITR_GRAN_S);
}

/**
 * ice_write_itr - write throttle rate to queue specific register
 * @rc: pointer to ring container
 * @itr: throttle rate in microseconds to write
 */
void ice_write_itr(struct ice_ring_container *rc, u16 itr)
{
	struct ice_q_vector *q_vector;

	if (!rc->ring)
		return;

	q_vector = rc->ring->q_vector;

	__ice_write_itr(q_vector, rc, itr);
}

1832 1833 1834
/**
 * ice_vsi_cfg_msix - MSIX mode Interrupt Config in the HW
 * @vsi: the VSI being configured
1835 1836 1837
 *
 * This configures MSIX mode interrupts for the PF VSI, and should not be used
 * for the VF VSI.
1838 1839 1840 1841 1842
 */
void ice_vsi_cfg_msix(struct ice_vsi *vsi)
{
	struct ice_pf *pf = vsi->back;
	struct ice_hw *hw = &pf->hw;
K
Karol Kolacinski 已提交
1843
	u16 txq = 0, rxq = 0;
1844
	int i, q;
1845

1846
	for (i = 0; i < vsi->num_q_vectors; i++) {
1847
		struct ice_q_vector *q_vector = vsi->q_vectors[i];
1848
		u16 reg_idx = q_vector->reg_idx;
1849

1850
		ice_cfg_itr(hw, q_vector);
1851

1852 1853 1854 1855 1856 1857 1858 1859 1860 1861 1862 1863
		/* Both Transmit Queue Interrupt Cause Control register
		 * and Receive Queue Interrupt Cause control register
		 * expects MSIX_INDX field to be the vector index
		 * within the function space and not the absolute
		 * vector index across PF or across device.
		 * For SR-IOV VF VSIs queue vector index always starts
		 * with 1 since first vector index(0) is used for OICR
		 * in VF space. Since VMDq and other PF VSIs are within
		 * the PF function space, use the vector index that is
		 * tracked for this PF.
		 */
		for (q = 0; q < q_vector->num_ring_tx; q++) {
1864 1865
			ice_cfg_txq_interrupt(vsi, txq, reg_idx,
					      q_vector->tx.itr_idx);
1866 1867 1868 1869
			txq++;
		}

		for (q = 0; q < q_vector->num_ring_rx; q++) {
1870 1871
			ice_cfg_rxq_interrupt(vsi, rxq, reg_idx,
					      q_vector->rx.itr_idx);
1872 1873 1874 1875 1876
			rxq++;
		}
	}
}

1877 1878 1879 1880 1881 1882 1883
/**
 * ice_vsi_manage_vlan_insertion - Manage VLAN insertion for the VSI for Tx
 * @vsi: the VSI being changed
 */
int ice_vsi_manage_vlan_insertion(struct ice_vsi *vsi)
{
	struct ice_hw *hw = &vsi->back->hw;
1884
	struct ice_vsi_ctx *ctxt;
1885
	enum ice_status status;
1886 1887
	int ret = 0;

1888
	ctxt = kzalloc(sizeof(*ctxt), GFP_KERNEL);
1889 1890
	if (!ctxt)
		return -ENOMEM;
1891 1892 1893 1894 1895

	/* Here we are configuring the VSI to let the driver add VLAN tags by
	 * setting vlan_flags to ICE_AQ_VSI_VLAN_MODE_ALL. The actual VLAN tag
	 * insertion happens in the Tx hot path, in ice_tx_map.
	 */
1896
	ctxt->info.vlan_flags = ICE_AQ_VSI_VLAN_MODE_ALL;
1897

1898 1899 1900 1901
	/* Preserve existing VLAN strip setting */
	ctxt->info.vlan_flags |= (vsi->info.vlan_flags &
				  ICE_AQ_VSI_VLAN_EMOD_M);

1902
	ctxt->info.valid_sections = cpu_to_le16(ICE_AQ_VSI_PROP_VLAN_VALID);
1903

1904
	status = ice_update_vsi(hw, vsi->idx, ctxt, NULL);
1905
	if (status) {
1906 1907 1908
		dev_err(ice_pf_to_dev(vsi->back), "update VSI for VLAN insert failed, err %s aq_err %s\n",
			ice_stat_str(status),
			ice_aq_str(hw->adminq.sq_last_status));
1909 1910
		ret = -EIO;
		goto out;
1911 1912
	}

1913 1914
	vsi->info.vlan_flags = ctxt->info.vlan_flags;
out:
1915
	kfree(ctxt);
1916
	return ret;
1917 1918 1919 1920 1921 1922 1923 1924 1925 1926
}

/**
 * ice_vsi_manage_vlan_stripping - Manage VLAN stripping for the VSI for Rx
 * @vsi: the VSI being changed
 * @ena: boolean value indicating if this is a enable or disable request
 */
int ice_vsi_manage_vlan_stripping(struct ice_vsi *vsi, bool ena)
{
	struct ice_hw *hw = &vsi->back->hw;
1927
	struct ice_vsi_ctx *ctxt;
1928
	enum ice_status status;
1929 1930
	int ret = 0;

1931 1932 1933 1934 1935 1936
	/* do not allow modifying VLAN stripping when a port VLAN is configured
	 * on this VSI
	 */
	if (vsi->info.pvid)
		return 0;

1937
	ctxt = kzalloc(sizeof(*ctxt), GFP_KERNEL);
1938 1939
	if (!ctxt)
		return -ENOMEM;
1940 1941 1942 1943 1944

	/* Here we are configuring what the VSI should do with the VLAN tag in
	 * the Rx packet. We can either leave the tag in the packet or put it in
	 * the Rx descriptor.
	 */
1945
	if (ena)
1946
		/* Strip VLAN tag from Rx packet and put it in the desc */
1947 1948
		ctxt->info.vlan_flags = ICE_AQ_VSI_VLAN_EMOD_STR_BOTH;
	else
1949
		/* Disable stripping. Leave tag in packet */
1950
		ctxt->info.vlan_flags = ICE_AQ_VSI_VLAN_EMOD_NOTHING;
1951 1952

	/* Allow all packets untagged/tagged */
1953
	ctxt->info.vlan_flags |= ICE_AQ_VSI_VLAN_MODE_ALL;
1954

1955
	ctxt->info.valid_sections = cpu_to_le16(ICE_AQ_VSI_PROP_VLAN_VALID);
1956

1957
	status = ice_update_vsi(hw, vsi->idx, ctxt, NULL);
1958
	if (status) {
1959 1960 1961
		dev_err(ice_pf_to_dev(vsi->back), "update VSI for VLAN strip failed, ena = %d err %s aq_err %s\n",
			ena, ice_stat_str(status),
			ice_aq_str(hw->adminq.sq_last_status));
1962 1963
		ret = -EIO;
		goto out;
1964 1965
	}

1966 1967
	vsi->info.vlan_flags = ctxt->info.vlan_flags;
out:
1968
	kfree(ctxt);
1969
	return ret;
1970
}
1971 1972

/**
1973 1974
 * ice_vsi_start_all_rx_rings - start/enable all of a VSI's Rx rings
 * @vsi: the VSI whose rings are to be enabled
1975 1976 1977
 *
 * Returns 0 on success and a negative value on error
 */
1978
int ice_vsi_start_all_rx_rings(struct ice_vsi *vsi)
1979
{
1980
	return ice_vsi_ctrl_all_rx_rings(vsi, true);
1981 1982 1983
}

/**
1984 1985
 * ice_vsi_stop_all_rx_rings - stop/disable all of a VSI's Rx rings
 * @vsi: the VSI whose rings are to be disabled
1986 1987 1988
 *
 * Returns 0 on success and a negative value on error
 */
1989
int ice_vsi_stop_all_rx_rings(struct ice_vsi *vsi)
1990
{
1991
	return ice_vsi_ctrl_all_rx_rings(vsi, false);
1992 1993
}

1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004
/**
 * ice_vsi_stop_tx_rings - Disable Tx rings
 * @vsi: the VSI being configured
 * @rst_src: reset source
 * @rel_vmvf_num: Relative ID of VF/VM
 * @rings: Tx ring array to be stopped
 */
static int
ice_vsi_stop_tx_rings(struct ice_vsi *vsi, enum ice_disq_rst_src rst_src,
		      u16 rel_vmvf_num, struct ice_ring **rings)
{
2005
	u16 q_idx;
2006 2007 2008

	if (vsi->num_txq > ICE_LAN_TXQ_MAX_QDIS)
		return -EINVAL;
2009

2010 2011 2012
	for (q_idx = 0; q_idx < vsi->num_txq; q_idx++) {
		struct ice_txq_meta txq_meta = { };
		int status;
2013

2014 2015
		if (!rings || !rings[q_idx])
			return -EINVAL;
2016

2017 2018 2019
		ice_fill_txq_meta(vsi, rings[q_idx], &txq_meta);
		status = ice_vsi_stop_tx_ring(vsi, rst_src, rel_vmvf_num,
					      rings[q_idx], &txq_meta);
2020

2021 2022
		if (status)
			return status;
2023 2024
	}

2025
	return 0;
2026
}
2027

2028 2029 2030 2031
/**
 * ice_vsi_stop_lan_tx_rings - Disable LAN Tx rings
 * @vsi: the VSI being configured
 * @rst_src: reset source
2032
 * @rel_vmvf_num: Relative ID of VF/VM
2033
 */
2034 2035 2036
int
ice_vsi_stop_lan_tx_rings(struct ice_vsi *vsi, enum ice_disq_rst_src rst_src,
			  u16 rel_vmvf_num)
2037
{
2038
	return ice_vsi_stop_tx_rings(vsi, rst_src, rel_vmvf_num, vsi->tx_rings);
2039 2040
}

M
Maciej Fijalkowski 已提交
2041 2042 2043 2044 2045 2046 2047 2048 2049
/**
 * ice_vsi_stop_xdp_tx_rings - Disable XDP Tx rings
 * @vsi: the VSI being configured
 */
int ice_vsi_stop_xdp_tx_rings(struct ice_vsi *vsi)
{
	return ice_vsi_stop_tx_rings(vsi, ICE_NO_RESET, 0, vsi->xdp_rings);
}

2050 2051 2052 2053
/**
 * ice_vsi_is_vlan_pruning_ena - check if VLAN pruning is enabled or not
 * @vsi: VSI to check whether or not VLAN pruning is enabled.
 *
2054
 * returns true if Rx VLAN pruning is enabled and false otherwise.
2055 2056 2057 2058 2059 2060
 */
bool ice_vsi_is_vlan_pruning_ena(struct ice_vsi *vsi)
{
	if (!vsi)
		return false;

2061
	return (vsi->info.sw_flags2 & ICE_AQ_VSI_SW_FLAG_RX_VLAN_PRUNE_ENA);
2062 2063
}

2064 2065 2066 2067
/**
 * ice_cfg_vlan_pruning - enable or disable VLAN pruning on the VSI
 * @vsi: VSI to enable or disable VLAN pruning on
 * @ena: set to true to enable VLAN pruning and false to disable it
2068
 * @vlan_promisc: enable valid security flags if not in VLAN promiscuous mode
2069 2070 2071
 *
 * returns 0 if VSI is updated, negative otherwise
 */
2072
int ice_cfg_vlan_pruning(struct ice_vsi *vsi, bool ena, bool vlan_promisc)
2073 2074
{
	struct ice_vsi_ctx *ctxt;
2075
	struct ice_pf *pf;
2076 2077 2078 2079 2080
	int status;

	if (!vsi)
		return -EINVAL;

2081 2082 2083 2084 2085 2086 2087
	/* Don't enable VLAN pruning if the netdev is currently in promiscuous
	 * mode. VLAN pruning will be enabled when the interface exits
	 * promiscuous mode if any VLAN filters are active.
	 */
	if (vsi->netdev && vsi->netdev->flags & IFF_PROMISC && ena)
		return 0;

2088
	pf = vsi->back;
2089
	ctxt = kzalloc(sizeof(*ctxt), GFP_KERNEL);
2090 2091 2092 2093 2094
	if (!ctxt)
		return -ENOMEM;

	ctxt->info = vsi->info;

B
Brett Creeley 已提交
2095
	if (ena)
2096
		ctxt->info.sw_flags2 |= ICE_AQ_VSI_SW_FLAG_RX_VLAN_PRUNE_ENA;
B
Brett Creeley 已提交
2097
	else
2098 2099
		ctxt->info.sw_flags2 &= ~ICE_AQ_VSI_SW_FLAG_RX_VLAN_PRUNE_ENA;

2100 2101
	if (!vlan_promisc)
		ctxt->info.valid_sections =
B
Brett Creeley 已提交
2102
			cpu_to_le16(ICE_AQ_VSI_PROP_SW_VALID);
2103

2104
	status = ice_update_vsi(&pf->hw, vsi->idx, ctxt, NULL);
2105
	if (status) {
2106 2107 2108 2109
		netdev_err(vsi->netdev, "%sabling VLAN pruning on VSI handle: %d, VSI HW ID: %d failed, err = %s, aq_err = %s\n",
			   ena ? "En" : "Dis", vsi->idx, vsi->vsi_num,
			   ice_stat_str(status),
			   ice_aq_str(pf->hw.adminq.sq_last_status));
2110 2111 2112 2113 2114
		goto err_out;
	}

	vsi->info.sw_flags2 = ctxt->info.sw_flags2;

2115
	kfree(ctxt);
2116 2117 2118
	return 0;

err_out:
2119
	kfree(ctxt);
2120 2121 2122
	return -EIO;
}

2123 2124
static void ice_vsi_set_tc_cfg(struct ice_vsi *vsi)
{
2125
	struct ice_dcbx_cfg *cfg = &vsi->port_info->qos_cfg.local_dcbx_cfg;
2126 2127 2128 2129 2130

	vsi->tc_cfg.ena_tc = ice_dcb_get_ena_tc(cfg);
	vsi->tc_cfg.numtc = ice_dcb_get_num_tc(cfg);
}

2131 2132 2133 2134 2135 2136 2137 2138 2139 2140 2141 2142 2143 2144 2145 2146
/**
 * ice_vsi_set_q_vectors_reg_idx - set the HW register index for all q_vectors
 * @vsi: VSI to set the q_vectors register index on
 */
static int
ice_vsi_set_q_vectors_reg_idx(struct ice_vsi *vsi)
{
	u16 i;

	if (!vsi || !vsi->q_vectors)
		return -EINVAL;

	ice_for_each_q_vector(vsi, i) {
		struct ice_q_vector *q_vector = vsi->q_vectors[i];

		if (!q_vector) {
2147
			dev_err(ice_pf_to_dev(vsi->back), "Failed to set reg_idx on q_vector %d VSI %d\n",
2148 2149 2150 2151
				i, vsi->vsi_num);
			goto clear_reg_idx;
		}

B
Brett Creeley 已提交
2152 2153 2154 2155 2156 2157 2158 2159
		if (vsi->type == ICE_VSI_VF) {
			struct ice_vf *vf = &vsi->back->vf[vsi->vf_id];

			q_vector->reg_idx = ice_calc_vf_reg_idx(vf, q_vector);
		} else {
			q_vector->reg_idx =
				q_vector->v_idx + vsi->base_vector;
		}
2160 2161 2162 2163 2164 2165 2166 2167 2168 2169 2170 2171 2172 2173 2174
	}

	return 0;

clear_reg_idx:
	ice_for_each_q_vector(vsi, i) {
		struct ice_q_vector *q_vector = vsi->q_vectors[i];

		if (q_vector)
			q_vector->reg_idx = 0;
	}

	return -EINVAL;
}

2175 2176 2177 2178 2179 2180 2181 2182
/**
 * ice_cfg_sw_lldp - Config switch rules for LLDP packet handling
 * @vsi: the VSI being configured
 * @tx: bool to determine Tx or Rx rule
 * @create: bool to determine create or remove Rule
 */
void ice_cfg_sw_lldp(struct ice_vsi *vsi, bool tx, bool create)
{
2183 2184
	enum ice_status (*eth_fltr)(struct ice_vsi *v, u16 type, u16 flag,
				    enum ice_sw_fwd_act_type act);
2185 2186
	struct ice_pf *pf = vsi->back;
	enum ice_status status;
B
Brett Creeley 已提交
2187
	struct device *dev;
2188

B
Brett Creeley 已提交
2189
	dev = ice_pf_to_dev(pf);
2190
	eth_fltr = create ? ice_fltr_add_eth : ice_fltr_remove_eth;
2191

2192
	if (tx) {
2193 2194
		status = eth_fltr(vsi, ETH_P_LLDP, ICE_FLTR_TX,
				  ICE_DROP_PACKET);
2195 2196 2197 2198 2199 2200 2201 2202 2203
	} else {
		if (ice_fw_supports_lldp_fltr_ctrl(&pf->hw)) {
			status = ice_lldp_fltr_add_remove(&pf->hw, vsi->vsi_num,
							  create);
		} else {
			status = eth_fltr(vsi, ETH_P_LLDP, ICE_FLTR_RX,
					  ICE_FWD_TO_VSI);
		}
	}
2204 2205

	if (status)
2206
		dev_err(dev, "Fail %s %s LLDP rule on VSI %i error: %s\n",
2207
			create ? "adding" : "removing", tx ? "TX" : "RX",
2208
			vsi->vsi_num, ice_stat_str(status));
2209 2210
}

2211 2212 2213 2214 2215 2216 2217 2218 2219 2220 2221 2222 2223 2224 2225 2226 2227 2228 2229 2230 2231 2232 2233 2234 2235 2236 2237 2238 2239 2240 2241 2242 2243 2244 2245 2246 2247 2248 2249 2250 2251 2252 2253 2254 2255 2256 2257 2258 2259 2260 2261 2262 2263 2264 2265 2266 2267 2268 2269 2270 2271 2272 2273 2274 2275 2276 2277 2278 2279 2280 2281 2282 2283 2284 2285 2286 2287 2288 2289 2290 2291 2292 2293 2294 2295 2296 2297 2298 2299 2300 2301 2302 2303 2304 2305 2306 2307 2308 2309 2310 2311 2312 2313 2314 2315 2316 2317 2318 2319 2320 2321 2322 2323 2324 2325 2326 2327 2328 2329 2330
/**
 * ice_set_agg_vsi - sets up scheduler aggregator node and move VSI into it
 * @vsi: pointer to the VSI
 *
 * This function will allocate new scheduler aggregator now if needed and will
 * move specified VSI into it.
 */
static void ice_set_agg_vsi(struct ice_vsi *vsi)
{
	struct device *dev = ice_pf_to_dev(vsi->back);
	struct ice_agg_node *agg_node_iter = NULL;
	u32 agg_id = ICE_INVALID_AGG_NODE_ID;
	struct ice_agg_node *agg_node = NULL;
	int node_offset, max_agg_nodes = 0;
	struct ice_port_info *port_info;
	struct ice_pf *pf = vsi->back;
	u32 agg_node_id_start = 0;
	enum ice_status status;

	/* create (as needed) scheduler aggregator node and move VSI into
	 * corresponding aggregator node
	 * - PF aggregator node to contains VSIs of type _PF and _CTRL
	 * - VF aggregator nodes will contain VF VSI
	 */
	port_info = pf->hw.port_info;
	if (!port_info)
		return;

	switch (vsi->type) {
	case ICE_VSI_CTRL:
	case ICE_VSI_LB:
	case ICE_VSI_PF:
		max_agg_nodes = ICE_MAX_PF_AGG_NODES;
		agg_node_id_start = ICE_PF_AGG_NODE_ID_START;
		agg_node_iter = &pf->pf_agg_node[0];
		break;
	case ICE_VSI_VF:
		/* user can create 'n' VFs on a given PF, but since max children
		 * per aggregator node can be only 64. Following code handles
		 * aggregator(s) for VF VSIs, either selects a agg_node which
		 * was already created provided num_vsis < 64, otherwise
		 * select next available node, which will be created
		 */
		max_agg_nodes = ICE_MAX_VF_AGG_NODES;
		agg_node_id_start = ICE_VF_AGG_NODE_ID_START;
		agg_node_iter = &pf->vf_agg_node[0];
		break;
	default:
		/* other VSI type, handle later if needed */
		dev_dbg(dev, "unexpected VSI type %s\n",
			ice_vsi_type_str(vsi->type));
		return;
	}

	/* find the appropriate aggregator node */
	for (node_offset = 0; node_offset < max_agg_nodes; node_offset++) {
		/* see if we can find space in previously created
		 * node if num_vsis < 64, otherwise skip
		 */
		if (agg_node_iter->num_vsis &&
		    agg_node_iter->num_vsis == ICE_MAX_VSIS_IN_AGG_NODE) {
			agg_node_iter++;
			continue;
		}

		if (agg_node_iter->valid &&
		    agg_node_iter->agg_id != ICE_INVALID_AGG_NODE_ID) {
			agg_id = agg_node_iter->agg_id;
			agg_node = agg_node_iter;
			break;
		}

		/* find unclaimed agg_id */
		if (agg_node_iter->agg_id == ICE_INVALID_AGG_NODE_ID) {
			agg_id = node_offset + agg_node_id_start;
			agg_node = agg_node_iter;
			break;
		}
		/* move to next agg_node */
		agg_node_iter++;
	}

	if (!agg_node)
		return;

	/* if selected aggregator node was not created, create it */
	if (!agg_node->valid) {
		status = ice_cfg_agg(port_info, agg_id, ICE_AGG_TYPE_AGG,
				     (u8)vsi->tc_cfg.ena_tc);
		if (status) {
			dev_err(dev, "unable to create aggregator node with agg_id %u\n",
				agg_id);
			return;
		}
		/* aggregator node is created, store the neeeded info */
		agg_node->valid = true;
		agg_node->agg_id = agg_id;
	}

	/* move VSI to corresponding aggregator node */
	status = ice_move_vsi_to_agg(port_info, agg_id, vsi->idx,
				     (u8)vsi->tc_cfg.ena_tc);
	if (status) {
		dev_err(dev, "unable to move VSI idx %u into aggregator %u node",
			vsi->idx, agg_id);
		return;
	}

	/* keep active children count for aggregator node */
	agg_node->num_vsis++;

	/* cache the 'agg_id' in VSI, so that after reset - VSI will be moved
	 * to aggregator node
	 */
	vsi->agg_node = agg_node;
	dev_dbg(dev, "successfully moved VSI idx %u tc_bitmap 0x%x) into aggregator node %d which has num_vsis %u\n",
		vsi->idx, vsi->tc_cfg.ena_tc, vsi->agg_node->agg_id,
		vsi->agg_node->num_vsis);
}

2331 2332 2333 2334
/**
 * ice_vsi_setup - Set up a VSI by a given type
 * @pf: board private structure
 * @pi: pointer to the port_info instance
2335
 * @vsi_type: VSI type
2336
 * @vf_id: defines VF ID to which this VSI connects. This field is meant to be
2337 2338 2339 2340 2341 2342 2343 2344 2345 2346
 *         used only for ICE_VSI_VF VSI type. For other VSI types, should
 *         fill-in ICE_INVAL_VFID as input.
 *
 * This allocates the sw VSI structure and its queue resources.
 *
 * Returns pointer to the successfully allocated and configured VSI sw struct on
 * success, NULL on failure.
 */
struct ice_vsi *
ice_vsi_setup(struct ice_pf *pf, struct ice_port_info *pi,
2347
	      enum ice_vsi_type vsi_type, u16 vf_id)
2348 2349
{
	u16 max_txqs[ICE_MAX_TRAFFIC_CLASS] = { 0 };
B
Brett Creeley 已提交
2350
	struct device *dev = ice_pf_to_dev(pf);
2351
	enum ice_status status;
2352 2353 2354
	struct ice_vsi *vsi;
	int ret, i;

2355
	if (vsi_type == ICE_VSI_VF || vsi_type == ICE_VSI_CTRL)
2356
		vsi = ice_vsi_alloc(pf, vsi_type, vf_id);
2357
	else
2358
		vsi = ice_vsi_alloc(pf, vsi_type, ICE_INVAL_VFID);
2359

2360 2361 2362 2363 2364 2365 2366
	if (!vsi) {
		dev_err(dev, "could not allocate VSI\n");
		return NULL;
	}

	vsi->port_info = pi;
	vsi->vsw = pf->first_sw;
2367 2368 2369
	if (vsi->type == ICE_VSI_PF)
		vsi->ethtype = ETH_P_PAUSE;

2370
	if (vsi->type == ICE_VSI_VF || vsi->type == ICE_VSI_CTRL)
2371
		vsi->vf_id = vf_id;
2372

2373 2374
	ice_alloc_fd_res(vsi);

2375 2376 2377
	if (ice_vsi_get_qs(vsi)) {
		dev_err(dev, "Failed to allocate queues. vsi->idx = %d\n",
			vsi->idx);
2378
		goto unroll_vsi_alloc;
2379 2380 2381 2382 2383
	}

	/* set RSS capabilities */
	ice_vsi_set_rss_params(vsi);

2384
	/* set TC configuration */
2385 2386
	ice_vsi_set_tc_cfg(vsi);

2387
	/* create the VSI */
2388
	ret = ice_vsi_init(vsi, true);
2389 2390 2391 2392
	if (ret)
		goto unroll_get_qs;

	switch (vsi->type) {
2393
	case ICE_VSI_CTRL:
2394 2395 2396 2397 2398 2399 2400 2401 2402
	case ICE_VSI_PF:
		ret = ice_vsi_alloc_q_vectors(vsi);
		if (ret)
			goto unroll_vsi_init;

		ret = ice_vsi_setup_vector_base(vsi);
		if (ret)
			goto unroll_alloc_q_vector;

2403 2404 2405 2406
		ret = ice_vsi_set_q_vectors_reg_idx(vsi);
		if (ret)
			goto unroll_vector_base;

2407 2408 2409 2410
		ret = ice_vsi_alloc_rings(vsi);
		if (ret)
			goto unroll_vector_base;

2411 2412 2413 2414 2415 2416 2417
		/* Always add VLAN ID 0 switch rule by default. This is needed
		 * in order to allow all untagged and 0 tagged priority traffic
		 * if Rx VLAN pruning is enabled. Also there are cases where we
		 * don't get the call to add VLAN 0 via ice_vlan_rx_add_vid()
		 * so this handles those cases (i.e. adding the PF to a bridge
		 * without the 8021q module loaded).
		 */
2418
		ret = ice_vsi_add_vlan(vsi, 0, ICE_FWD_TO_VSI);
2419 2420 2421
		if (ret)
			goto unroll_clear_rings;

2422 2423
		ice_vsi_map_rings_to_vectors(vsi);

2424 2425 2426 2427 2428 2429 2430 2431 2432 2433
		/* ICE_VSI_CTRL does not need RSS so skip RSS processing */
		if (vsi->type != ICE_VSI_CTRL)
			/* Do not exit if configuring RSS had an issue, at
			 * least receive traffic on first queue. Hence no
			 * need to capture return value
			 */
			if (test_bit(ICE_FLAG_RSS_ENA, pf->flags)) {
				ice_vsi_cfg_rss_lut_key(vsi);
				ice_vsi_set_rss_flow_fld(vsi);
			}
B
Brett Creeley 已提交
2434
		ice_init_arfs(vsi);
2435
		break;
2436 2437 2438 2439 2440 2441 2442 2443 2444 2445 2446 2447 2448 2449
	case ICE_VSI_VF:
		/* VF driver will take care of creating netdev for this type and
		 * map queues to vectors through Virtchnl, PF driver only
		 * creates a VSI and corresponding structures for bookkeeping
		 * purpose
		 */
		ret = ice_vsi_alloc_q_vectors(vsi);
		if (ret)
			goto unroll_vsi_init;

		ret = ice_vsi_alloc_rings(vsi);
		if (ret)
			goto unroll_alloc_q_vector;

2450 2451 2452 2453
		ret = ice_vsi_set_q_vectors_reg_idx(vsi);
		if (ret)
			goto unroll_vector_base;

2454 2455 2456 2457
		/* Do not exit if configuring RSS had an issue, at least
		 * receive traffic on first queue. Hence no need to capture
		 * return value
		 */
2458
		if (test_bit(ICE_FLAG_RSS_ENA, pf->flags)) {
2459
			ice_vsi_cfg_rss_lut_key(vsi);
2460 2461
			ice_vsi_set_vf_rss_flow_fld(vsi);
		}
2462
		break;
2463 2464 2465 2466 2467
	case ICE_VSI_LB:
		ret = ice_vsi_alloc_rings(vsi);
		if (ret)
			goto unroll_vsi_init;
		break;
2468
	default:
2469
		/* clean up the resources and exit */
2470 2471 2472 2473 2474
		goto unroll_vsi_init;
	}

	/* configure VSI nodes based on number of queues and TC's */
	for (i = 0; i < vsi->tc_cfg.numtc; i++)
2475
		max_txqs[i] = vsi->alloc_txq;
2476

2477 2478 2479
	status = ice_cfg_vsi_lan(vsi->port_info, vsi->idx, vsi->tc_cfg.ena_tc,
				 max_txqs);
	if (status) {
2480 2481
		dev_err(dev, "VSI %d failed lan queue config, error %s\n",
			vsi->vsi_num, ice_stat_str(status));
2482
		goto unroll_clear_rings;
2483 2484
	}

2485 2486 2487 2488 2489
	/* Add switch rule to drop all Tx Flow Control Frames, of look up
	 * type ETHERTYPE from VSIs, and restrict malicious VF from sending
	 * out PAUSE or PFC frames. If enabled, FW can still send FC frames.
	 * The rule is added once for PF VSI in order to create appropriate
	 * recipe, since VSI/VSI list is ignored with drop action...
2490 2491 2492
	 * Also add rules to handle LLDP Tx packets.  Tx LLDP packets need to
	 * be dropped so that VFs cannot send LLDP packets to reconfig DCB
	 * settings in the HW.
2493
	 */
2494
	if (!ice_is_safe_mode(pf))
T
Tony Nguyen 已提交
2495
		if (vsi->type == ICE_VSI_PF) {
2496 2497
			ice_fltr_add_eth(vsi, ETH_P_PAUSE, ICE_FLTR_TX,
					 ICE_DROP_PACKET);
T
Tony Nguyen 已提交
2498 2499
			ice_cfg_sw_lldp(vsi, true, true);
		}
2500

2501 2502
	if (!vsi->agg_node)
		ice_set_agg_vsi(vsi);
2503 2504
	return vsi;

2505 2506
unroll_clear_rings:
	ice_vsi_clear_rings(vsi);
2507
unroll_vector_base:
2508
	/* reclaim SW interrupts back to the common pool */
B
Brett Creeley 已提交
2509
	ice_free_res(pf->irq_tracker, vsi->base_vector, vsi->idx);
2510
	pf->num_avail_sw_msix += vsi->num_q_vectors;
2511 2512 2513 2514 2515 2516
unroll_alloc_q_vector:
	ice_vsi_free_q_vectors(vsi);
unroll_vsi_init:
	ice_vsi_delete(vsi);
unroll_get_qs:
	ice_vsi_put_qs(vsi);
2517
unroll_vsi_alloc:
2518 2519
	if (vsi_type == ICE_VSI_VF)
		ice_enable_lag(pf->lag);
2520 2521 2522 2523 2524
	ice_vsi_clear(vsi);

	return NULL;
}

2525 2526 2527 2528 2529 2530 2531 2532 2533 2534 2535 2536
/**
 * ice_vsi_release_msix - Clear the queue to Interrupt mapping in HW
 * @vsi: the VSI being cleaned up
 */
static void ice_vsi_release_msix(struct ice_vsi *vsi)
{
	struct ice_pf *pf = vsi->back;
	struct ice_hw *hw = &pf->hw;
	u32 txq = 0;
	u32 rxq = 0;
	int i, q;

B
Brett Creeley 已提交
2537
	for (i = 0; i < vsi->num_q_vectors; i++) {
2538 2539
		struct ice_q_vector *q_vector = vsi->q_vectors[i];

2540
		ice_write_intrl(q_vector, 0);
2541
		for (q = 0; q < q_vector->num_ring_tx; q++) {
2542
			ice_write_itr(&q_vector->tx, 0);
2543
			wr32(hw, QINT_TQCTL(vsi->txq_map[txq]), 0);
M
Maciej Fijalkowski 已提交
2544 2545 2546 2547 2548
			if (ice_is_xdp_ena_vsi(vsi)) {
				u32 xdp_txq = txq + vsi->num_xdp_txq;

				wr32(hw, QINT_TQCTL(vsi->txq_map[xdp_txq]), 0);
			}
2549 2550 2551 2552
			txq++;
		}

		for (q = 0; q < q_vector->num_ring_rx; q++) {
2553
			ice_write_itr(&q_vector->rx, 0);
2554 2555 2556 2557 2558 2559 2560 2561 2562 2563 2564 2565 2566 2567 2568
			wr32(hw, QINT_RQCTL(vsi->rxq_map[rxq]), 0);
			rxq++;
		}
	}

	ice_flush(hw);
}

/**
 * ice_vsi_free_irq - Free the IRQ association with the OS
 * @vsi: the VSI being configured
 */
void ice_vsi_free_irq(struct ice_vsi *vsi)
{
	struct ice_pf *pf = vsi->back;
B
Brett Creeley 已提交
2569
	int base = vsi->base_vector;
2570
	int i;
2571

2572 2573
	if (!vsi->q_vectors || !vsi->irqs_ready)
		return;
2574

2575 2576 2577
	ice_vsi_release_msix(vsi);
	if (vsi->type == ICE_VSI_VF)
		return;
2578

2579 2580 2581 2582
	vsi->irqs_ready = false;
	ice_for_each_q_vector(vsi, i) {
		u16 vector = i + base;
		int irq_num;
2583

2584
		irq_num = pf->msix_entries[vector].vector;
2585

2586 2587 2588 2589 2590
		/* free only the irqs that were actually requested */
		if (!vsi->q_vectors[i] ||
		    !(vsi->q_vectors[i]->num_ring_tx ||
		      vsi->q_vectors[i]->num_ring_rx))
			continue;
2591

2592 2593
		/* clear the affinity notifier in the IRQ descriptor */
		irq_set_affinity_notifier(irq_num, NULL);
2594

2595 2596 2597
		/* clear the affinity_mask in the IRQ descriptor */
		irq_set_affinity_hint(irq_num, NULL);
		synchronize_irq(irq_num);
B
Brett Creeley 已提交
2598
		devm_free_irq(ice_pf_to_dev(pf), irq_num, vsi->q_vectors[i]);
2599 2600 2601 2602 2603 2604 2605 2606 2607 2608 2609 2610 2611 2612 2613 2614 2615 2616 2617 2618 2619 2620 2621 2622 2623 2624 2625 2626 2627 2628 2629 2630 2631 2632 2633
	}
}

/**
 * ice_vsi_free_tx_rings - Free Tx resources for VSI queues
 * @vsi: the VSI having resources freed
 */
void ice_vsi_free_tx_rings(struct ice_vsi *vsi)
{
	int i;

	if (!vsi->tx_rings)
		return;

	ice_for_each_txq(vsi, i)
		if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc)
			ice_free_tx_ring(vsi->tx_rings[i]);
}

/**
 * ice_vsi_free_rx_rings - Free Rx resources for VSI queues
 * @vsi: the VSI having resources freed
 */
void ice_vsi_free_rx_rings(struct ice_vsi *vsi)
{
	int i;

	if (!vsi->rx_rings)
		return;

	ice_for_each_rxq(vsi, i)
		if (vsi->rx_rings[i] && vsi->rx_rings[i]->desc)
			ice_free_rx_ring(vsi->rx_rings[i]);
}

2634 2635 2636 2637 2638 2639
/**
 * ice_vsi_close - Shut down a VSI
 * @vsi: the VSI being shut down
 */
void ice_vsi_close(struct ice_vsi *vsi)
{
2640
	if (!test_and_set_bit(ICE_VSI_DOWN, vsi->state))
2641 2642 2643 2644 2645 2646 2647
		ice_down(vsi);

	ice_vsi_free_irq(vsi);
	ice_vsi_free_tx_rings(vsi);
	ice_vsi_free_rx_rings(vsi);
}

2648 2649 2650 2651 2652 2653 2654 2655 2656
/**
 * ice_ena_vsi - resume a VSI
 * @vsi: the VSI being resume
 * @locked: is the rtnl_lock already held
 */
int ice_ena_vsi(struct ice_vsi *vsi, bool locked)
{
	int err = 0;

2657
	if (!test_bit(ICE_VSI_NEEDS_RESTART, vsi->state))
2658 2659
		return 0;

2660
	clear_bit(ICE_VSI_NEEDS_RESTART, vsi->state);
2661 2662 2663 2664 2665 2666

	if (vsi->netdev && vsi->type == ICE_VSI_PF) {
		if (netif_running(vsi->netdev)) {
			if (!locked)
				rtnl_lock();

2667
			err = ice_open_internal(vsi->netdev);
2668 2669 2670 2671

			if (!locked)
				rtnl_unlock();
		}
2672 2673
	} else if (vsi->type == ICE_VSI_CTRL) {
		err = ice_vsi_open_ctrl(vsi);
2674 2675 2676 2677 2678 2679 2680 2681 2682 2683 2684 2685
	}

	return err;
}

/**
 * ice_dis_vsi - pause a VSI
 * @vsi: the VSI being paused
 * @locked: is the rtnl_lock already held
 */
void ice_dis_vsi(struct ice_vsi *vsi, bool locked)
{
2686
	if (test_bit(ICE_VSI_DOWN, vsi->state))
2687 2688
		return;

2689
	set_bit(ICE_VSI_NEEDS_RESTART, vsi->state);
2690 2691 2692 2693 2694 2695

	if (vsi->type == ICE_VSI_PF && vsi->netdev) {
		if (netif_running(vsi->netdev)) {
			if (!locked)
				rtnl_lock();

2696
			ice_vsi_close(vsi);
2697 2698 2699 2700 2701 2702

			if (!locked)
				rtnl_unlock();
		} else {
			ice_vsi_close(vsi);
		}
2703 2704
	} else if (vsi->type == ICE_VSI_CTRL) {
		ice_vsi_close(vsi);
2705 2706 2707
	}
}

2708 2709 2710 2711 2712 2713
/**
 * ice_vsi_dis_irq - Mask off queue interrupt generation on the VSI
 * @vsi: the VSI being un-configured
 */
void ice_vsi_dis_irq(struct ice_vsi *vsi)
{
B
Brett Creeley 已提交
2714
	int base = vsi->base_vector;
2715 2716 2717 2718 2719 2720 2721 2722 2723 2724 2725 2726 2727 2728 2729 2730 2731 2732 2733 2734 2735 2736 2737 2738 2739 2740 2741 2742 2743 2744 2745 2746 2747
	struct ice_pf *pf = vsi->back;
	struct ice_hw *hw = &pf->hw;
	u32 val;
	int i;

	/* disable interrupt causation from each queue */
	if (vsi->tx_rings) {
		ice_for_each_txq(vsi, i) {
			if (vsi->tx_rings[i]) {
				u16 reg;

				reg = vsi->tx_rings[i]->reg_idx;
				val = rd32(hw, QINT_TQCTL(reg));
				val &= ~QINT_TQCTL_CAUSE_ENA_M;
				wr32(hw, QINT_TQCTL(reg), val);
			}
		}
	}

	if (vsi->rx_rings) {
		ice_for_each_rxq(vsi, i) {
			if (vsi->rx_rings[i]) {
				u16 reg;

				reg = vsi->rx_rings[i]->reg_idx;
				val = rd32(hw, QINT_RQCTL(reg));
				val &= ~QINT_RQCTL_CAUSE_ENA_M;
				wr32(hw, QINT_RQCTL(reg), val);
			}
		}
	}

	/* disable each interrupt */
T
Tony Nguyen 已提交
2748 2749 2750
	ice_for_each_q_vector(vsi, i) {
		if (!vsi->q_vectors[i])
			continue;
2751
		wr32(hw, GLINT_DYN_CTL(vsi->q_vectors[i]->reg_idx), 0);
T
Tony Nguyen 已提交
2752
	}
2753

2754
	ice_flush(hw);
2755

2756 2757 2758 2759
	/* don't call synchronize_irq() for VF's from the host */
	if (vsi->type == ICE_VSI_VF)
		return;

2760 2761
	ice_for_each_q_vector(vsi, i)
		synchronize_irq(pf->msix_entries[i + base].vector);
2762 2763
}

2764 2765 2766 2767 2768 2769 2770 2771 2772 2773 2774 2775 2776 2777 2778
/**
 * ice_napi_del - Remove NAPI handler for the VSI
 * @vsi: VSI for which NAPI handler is to be removed
 */
void ice_napi_del(struct ice_vsi *vsi)
{
	int v_idx;

	if (!vsi->netdev)
		return;

	ice_for_each_q_vector(vsi, v_idx)
		netif_napi_del(&vsi->q_vectors[v_idx]->napi);
}

2779 2780 2781 2782 2783 2784 2785 2786 2787 2788 2789 2790 2791
/**
 * ice_vsi_release - Delete a VSI and free its resources
 * @vsi: the VSI being removed
 *
 * Returns 0 on success or < 0 on error
 */
int ice_vsi_release(struct ice_vsi *vsi)
{
	struct ice_pf *pf;

	if (!vsi->back)
		return -ENODEV;
	pf = vsi->back;
2792

2793 2794 2795 2796 2797
	/* do not unregister while driver is in the reset recovery pending
	 * state. Since reset/rebuild happens through PF service task workqueue,
	 * it's not a good idea to unregister netdev that is associated to the
	 * PF that is running the work queue items currently. This is done to
	 * avoid check_flush_dependency() warning on this wq
2798
	 */
2799 2800
	if (vsi->netdev && !ice_is_reset_in_progress(pf->state) &&
	    (test_bit(ICE_VSI_NETDEV_REGISTERED, vsi->state))) {
2801
		unregister_netdev(vsi->netdev);
2802
		clear_bit(ICE_VSI_NETDEV_REGISTERED, vsi->state);
2803
	}
2804

2805 2806
	ice_devlink_destroy_port(vsi);

2807 2808 2809 2810
	if (test_bit(ICE_FLAG_RSS_ENA, pf->flags))
		ice_rss_clean(vsi);

	/* Disable VSI and free resources */
2811 2812
	if (vsi->type != ICE_VSI_LB)
		ice_vsi_dis_irq(vsi);
2813 2814
	ice_vsi_close(vsi);

B
Brett Creeley 已提交
2815 2816 2817 2818 2819
	/* SR-IOV determines needed MSIX resources all at once instead of per
	 * VSI since when VFs are spawned we know how many VFs there are and how
	 * many interrupts each VF needs. SR-IOV MSIX resources are also
	 * cleared in the same manner.
	 */
2820 2821 2822 2823 2824 2825 2826 2827 2828 2829 2830 2831 2832 2833 2834 2835 2836 2837
	if (vsi->type == ICE_VSI_CTRL && vsi->vf_id != ICE_INVAL_VFID) {
		struct ice_vf *vf;
		int i;

		ice_for_each_vf(pf, i) {
			vf = &pf->vf[i];
			if (i != vsi->vf_id && vf->ctrl_vsi_idx != ICE_NO_VSI)
				break;
		}
		if (i == pf->num_alloc_vfs) {
			/* No other VFs left that have control VSI, reclaim SW
			 * interrupts back to the common pool
			 */
			ice_free_res(pf->irq_tracker, vsi->base_vector,
				     ICE_RES_VF_CTRL_VEC_ID);
			pf->num_avail_sw_msix += vsi->num_q_vectors;
		}
	} else if (vsi->type != ICE_VSI_VF) {
2838
		/* reclaim SW interrupts back to the common pool */
B
Brett Creeley 已提交
2839
		ice_free_res(pf->irq_tracker, vsi->base_vector, vsi->idx);
2840 2841
		pf->num_avail_sw_msix += vsi->num_q_vectors;
	}
2842

T
Tony Nguyen 已提交
2843 2844
	if (!ice_is_safe_mode(pf)) {
		if (vsi->type == ICE_VSI_PF) {
2845 2846
			ice_fltr_remove_eth(vsi, ETH_P_PAUSE, ICE_FLTR_TX,
					    ICE_DROP_PACKET);
T
Tony Nguyen 已提交
2847 2848 2849 2850 2851 2852 2853
			ice_cfg_sw_lldp(vsi, true, false);
			/* The Rx rule will only exist to remove if the LLDP FW
			 * engine is currently stopped
			 */
			if (!test_bit(ICE_FLAG_FW_LLDP_AGENT, pf->flags))
				ice_cfg_sw_lldp(vsi, false, false);
		}
2854
	}
2855

2856
	ice_fltr_remove_all(vsi);
2857
	ice_rm_vsi_lan_cfg(vsi->port_info, vsi->idx);
2858 2859
	ice_vsi_delete(vsi);
	ice_vsi_free_q_vectors(vsi);
2860

2861 2862 2863 2864 2865 2866 2867 2868 2869 2870
	if (vsi->netdev) {
		if (test_bit(ICE_VSI_NETDEV_REGISTERED, vsi->state)) {
			unregister_netdev(vsi->netdev);
			clear_bit(ICE_VSI_NETDEV_REGISTERED, vsi->state);
		}
		if (test_bit(ICE_VSI_NETDEV_ALLOCD, vsi->state)) {
			free_netdev(vsi->netdev);
			vsi->netdev = NULL;
			clear_bit(ICE_VSI_NETDEV_ALLOCD, vsi->state);
		}
2871 2872
	}

2873 2874 2875
	if (vsi->type == ICE_VSI_VF &&
	    vsi->agg_node && vsi->agg_node->valid)
		vsi->agg_node->num_vsis--;
2876 2877 2878 2879 2880 2881 2882 2883
	ice_vsi_clear_rings(vsi);

	ice_vsi_put_qs(vsi);

	/* retain SW VSI data structure since it is needed to unregister and
	 * free VSI netdev when PF is not in reset recovery pending state,\
	 * for ex: during rmmod.
	 */
2884
	if (!ice_is_reset_in_progress(pf->state))
2885 2886 2887 2888 2889
		ice_vsi_clear(vsi);

	return 0;
}

2890 2891 2892 2893 2894 2895 2896 2897 2898 2899 2900 2901 2902 2903 2904 2905 2906 2907 2908
/**
 * ice_vsi_rebuild_get_coalesce - get coalesce from all q_vectors
 * @vsi: VSI connected with q_vectors
 * @coalesce: array of struct with stored coalesce
 *
 * Returns array size.
 */
static int
ice_vsi_rebuild_get_coalesce(struct ice_vsi *vsi,
			     struct ice_coalesce_stored *coalesce)
{
	int i;

	ice_for_each_q_vector(vsi, i) {
		struct ice_q_vector *q_vector = vsi->q_vectors[i];

		coalesce[i].itr_tx = q_vector->tx.itr_setting;
		coalesce[i].itr_rx = q_vector->rx.itr_setting;
		coalesce[i].intrl = q_vector->intrl;
2909 2910 2911 2912 2913

		if (i < vsi->num_txq)
			coalesce[i].tx_valid = true;
		if (i < vsi->num_rxq)
			coalesce[i].rx_valid = true;
2914 2915 2916 2917 2918 2919 2920 2921 2922 2923 2924 2925 2926 2927 2928 2929 2930 2931 2932
	}

	return vsi->num_q_vectors;
}

/**
 * ice_vsi_rebuild_set_coalesce - set coalesce from earlier saved arrays
 * @vsi: VSI connected with q_vectors
 * @coalesce: pointer to array of struct with stored coalesce
 * @size: size of coalesce array
 *
 * Before this function, ice_vsi_rebuild_get_coalesce should be called to save
 * ITR params in arrays. If size is 0 or coalesce wasn't stored set coalesce
 * to default value.
 */
static void
ice_vsi_rebuild_set_coalesce(struct ice_vsi *vsi,
			     struct ice_coalesce_stored *coalesce, int size)
{
2933
	struct ice_ring_container *rc;
2934 2935 2936 2937 2938
	int i;

	if ((size && !coalesce) || !vsi)
		return;

2939 2940 2941 2942 2943
	/* There are a couple of cases that have to be handled here:
	 *   1. The case where the number of queue vectors stays the same, but
	 *      the number of Tx or Rx rings changes (the first for loop)
	 *   2. The case where the number of queue vectors increased (the
	 *      second for loop)
2944
	 */
2945 2946 2947 2948 2949 2950 2951 2952 2953 2954 2955
	for (i = 0; i < size && i < vsi->num_q_vectors; i++) {
		/* There are 2 cases to handle here and they are the same for
		 * both Tx and Rx:
		 *   if the entry was valid previously (coalesce[i].[tr]x_valid
		 *   and the loop variable is less than the number of rings
		 *   allocated, then write the previous values
		 *
		 *   if the entry was not valid previously, but the number of
		 *   rings is less than are allocated (this means the number of
		 *   rings increased from previously), then write out the
		 *   values in the first element
2956 2957 2958 2959
		 *
		 *   Also, always write the ITR, even if in ITR_IS_DYNAMIC
		 *   as there is no harm because the dynamic algorithm
		 *   will just overwrite.
2960
		 */
2961 2962 2963 2964 2965 2966 2967 2968 2969 2970 2971 2972 2973 2974 2975 2976 2977 2978 2979 2980 2981 2982
		if (i < vsi->alloc_rxq && coalesce[i].rx_valid) {
			rc = &vsi->q_vectors[i]->rx;
			rc->itr_setting = coalesce[i].itr_rx;
			ice_write_itr(rc, rc->itr_setting);
		} else if (i < vsi->alloc_rxq) {
			rc = &vsi->q_vectors[i]->rx;
			rc->itr_setting = coalesce[0].itr_rx;
			ice_write_itr(rc, rc->itr_setting);
		}

		if (i < vsi->alloc_txq && coalesce[i].tx_valid) {
			rc = &vsi->q_vectors[i]->tx;
			rc->itr_setting = coalesce[i].itr_tx;
			ice_write_itr(rc, rc->itr_setting);
		} else if (i < vsi->alloc_txq) {
			rc = &vsi->q_vectors[i]->tx;
			rc->itr_setting = coalesce[0].itr_tx;
			ice_write_itr(rc, rc->itr_setting);
		}

		vsi->q_vectors[i]->intrl = coalesce[i].intrl;
		ice_write_intrl(vsi->q_vectors[i], coalesce[i].intrl);
2983 2984 2985 2986 2987 2988
	}

	/* the number of queue vectors increased so write whatever is in
	 * the first element
	 */
	for (; i < vsi->num_q_vectors; i++) {
2989 2990 2991 2992 2993 2994 2995 2996 2997 2998 2999 3000
		/* transmit */
		rc = &vsi->q_vectors[i]->tx;
		rc->itr_setting = coalesce[0].itr_tx;
		ice_write_itr(rc, rc->itr_setting);

		/* receive */
		rc = &vsi->q_vectors[i]->rx;
		rc->itr_setting = coalesce[0].itr_rx;
		ice_write_itr(rc, rc->itr_setting);

		vsi->q_vectors[i]->intrl = coalesce[0].intrl;
		ice_write_intrl(vsi->q_vectors[i], coalesce[0].intrl);
3001
	}
3002 3003
}

3004 3005 3006
/**
 * ice_vsi_rebuild - Rebuild VSI after reset
 * @vsi: VSI to be rebuild
3007
 * @init_vsi: is this an initialization or a reconfigure of the VSI
3008 3009 3010
 *
 * Returns 0 on success and negative value on failure
 */
3011
int ice_vsi_rebuild(struct ice_vsi *vsi, bool init_vsi)
3012 3013
{
	u16 max_txqs[ICE_MAX_TRAFFIC_CLASS] = { 0 };
3014 3015
	struct ice_coalesce_stored *coalesce;
	int prev_num_q_vectors = 0;
3016
	struct ice_vf *vf = NULL;
3017
	enum ice_vsi_type vtype;
3018
	enum ice_status status;
3019
	struct ice_pf *pf;
3020 3021 3022 3023 3024
	int ret, i;

	if (!vsi)
		return -EINVAL;

3025
	pf = vsi->back;
3026 3027
	vtype = vsi->type;
	if (vtype == ICE_VSI_VF)
3028 3029
		vf = &pf->vf[vsi->vf_id];

3030 3031
	coalesce = kcalloc(vsi->num_q_vectors,
			   sizeof(struct ice_coalesce_stored), GFP_KERNEL);
3032 3033 3034 3035 3036
	if (!coalesce)
		return -ENOMEM;

	prev_num_q_vectors = ice_vsi_rebuild_get_coalesce(vsi, coalesce);

3037
	ice_rm_vsi_lan_cfg(vsi->port_info, vsi->idx);
3038
	ice_vsi_free_q_vectors(vsi);
3039

B
Brett Creeley 已提交
3040 3041 3042 3043 3044
	/* SR-IOV determines needed MSIX resources all at once instead of per
	 * VSI since when VFs are spawned we know how many VFs there are and how
	 * many interrupts each VF needs. SR-IOV MSIX resources are also
	 * cleared in the same manner.
	 */
3045
	if (vtype != ICE_VSI_VF) {
3046
		/* reclaim SW interrupts back to the common pool */
B
Brett Creeley 已提交
3047
		ice_free_res(pf->irq_tracker, vsi->base_vector, vsi->idx);
3048
		pf->num_avail_sw_msix += vsi->num_q_vectors;
B
Brett Creeley 已提交
3049
		vsi->base_vector = 0;
3050 3051
	}

M
Maciej Fijalkowski 已提交
3052 3053 3054 3055 3056
	if (ice_is_xdp_ena_vsi(vsi))
		/* return value check can be skipped here, it always returns
		 * 0 if reset is in progress
		 */
		ice_destroy_xdp_rings(vsi);
3057
	ice_vsi_put_qs(vsi);
3058
	ice_vsi_clear_rings(vsi);
3059
	ice_vsi_free_arrays(vsi);
3060
	if (vtype == ICE_VSI_VF)
3061 3062 3063
		ice_vsi_set_num_qs(vsi, vf->vf_id);
	else
		ice_vsi_set_num_qs(vsi, ICE_INVAL_VFID);
3064 3065 3066 3067 3068 3069

	ret = ice_vsi_alloc_arrays(vsi);
	if (ret < 0)
		goto err_vsi;

	ice_vsi_get_qs(vsi);
3070 3071

	ice_alloc_fd_res(vsi);
3072
	ice_vsi_set_tc_cfg(vsi);
3073 3074

	/* Initialize VSI struct elements and create VSI in FW */
3075
	ret = ice_vsi_init(vsi, init_vsi);
3076 3077 3078
	if (ret < 0)
		goto err_vsi;

3079
	switch (vtype) {
3080
	case ICE_VSI_CTRL:
3081 3082 3083 3084 3085
	case ICE_VSI_PF:
		ret = ice_vsi_alloc_q_vectors(vsi);
		if (ret)
			goto err_rings;

3086 3087 3088 3089
		ret = ice_vsi_setup_vector_base(vsi);
		if (ret)
			goto err_vectors;

3090 3091 3092 3093
		ret = ice_vsi_set_q_vectors_reg_idx(vsi);
		if (ret)
			goto err_vectors;

3094 3095 3096 3097 3098
		ret = ice_vsi_alloc_rings(vsi);
		if (ret)
			goto err_vectors;

		ice_vsi_map_rings_to_vectors(vsi);
M
Maciej Fijalkowski 已提交
3099
		if (ice_is_xdp_ena_vsi(vsi)) {
3100
			vsi->num_xdp_txq = vsi->alloc_rxq;
M
Maciej Fijalkowski 已提交
3101 3102 3103 3104
			ret = ice_prepare_xdp_rings(vsi, vsi->xdp_prog);
			if (ret)
				goto err_vectors;
		}
3105
		/* ICE_VSI_CTRL does not need RSS so skip RSS processing */
3106
		if (vtype != ICE_VSI_CTRL)
3107 3108 3109 3110 3111 3112
			/* Do not exit if configuring RSS had an issue, at
			 * least receive traffic on first queue. Hence no
			 * need to capture return value
			 */
			if (test_bit(ICE_FLAG_RSS_ENA, pf->flags))
				ice_vsi_cfg_rss_lut_key(vsi);
3113
		break;
3114 3115 3116 3117 3118
	case ICE_VSI_VF:
		ret = ice_vsi_alloc_q_vectors(vsi);
		if (ret)
			goto err_rings;

3119 3120 3121 3122
		ret = ice_vsi_set_q_vectors_reg_idx(vsi);
		if (ret)
			goto err_vectors;

3123 3124 3125 3126 3127
		ret = ice_vsi_alloc_rings(vsi);
		if (ret)
			goto err_vectors;

		break;
3128 3129 3130 3131 3132
	default:
		break;
	}

	/* configure VSI nodes based on number of queues and TC's */
M
Maciej Fijalkowski 已提交
3133
	for (i = 0; i < vsi->tc_cfg.numtc; i++) {
3134
		max_txqs[i] = vsi->alloc_txq;
3135

M
Maciej Fijalkowski 已提交
3136 3137 3138 3139
		if (ice_is_xdp_ena_vsi(vsi))
			max_txqs[i] += vsi->num_xdp_txq;
	}

3140 3141 3142
	status = ice_cfg_vsi_lan(vsi->port_info, vsi->idx, vsi->tc_cfg.ena_tc,
				 max_txqs);
	if (status) {
3143 3144
		dev_err(ice_pf_to_dev(pf), "VSI %d failed lan queue config, error %s\n",
			vsi->vsi_num, ice_stat_str(status));
3145 3146 3147 3148 3149 3150
		if (init_vsi) {
			ret = -EIO;
			goto err_vectors;
		} else {
			return ice_schedule_reset(pf, ICE_RESET_PFR);
		}
3151
	}
3152 3153 3154
	ice_vsi_rebuild_set_coalesce(vsi, coalesce, prev_num_q_vectors);
	kfree(coalesce);

3155 3156 3157 3158 3159 3160 3161 3162 3163 3164 3165 3166 3167
	return 0;

err_vectors:
	ice_vsi_free_q_vectors(vsi);
err_rings:
	if (vsi->netdev) {
		vsi->current_netdev_flags = 0;
		unregister_netdev(vsi->netdev);
		free_netdev(vsi->netdev);
		vsi->netdev = NULL;
	}
err_vsi:
	ice_vsi_clear(vsi);
3168
	set_bit(ICE_RESET_FAILED, pf->state);
3169
	kfree(coalesce);
3170 3171 3172
	return ret;
}

3173
/**
3174
 * ice_is_reset_in_progress - check for a reset in progress
3175
 * @state: PF state field
3176
 */
3177
bool ice_is_reset_in_progress(unsigned long *state)
3178
{
3179 3180 3181 3182
	return test_bit(ICE_RESET_OICR_RECV, state) ||
	       test_bit(ICE_PFR_REQ, state) ||
	       test_bit(ICE_CORER_REQ, state) ||
	       test_bit(ICE_GLOBR_REQ, state);
3183
}
3184 3185 3186 3187 3188 3189 3190 3191 3192 3193 3194 3195 3196 3197 3198 3199 3200 3201 3202 3203 3204 3205 3206 3207 3208 3209 3210

#ifdef CONFIG_DCB
/**
 * ice_vsi_update_q_map - update our copy of the VSI info with new queue map
 * @vsi: VSI being configured
 * @ctx: the context buffer returned from AQ VSI update command
 */
static void ice_vsi_update_q_map(struct ice_vsi *vsi, struct ice_vsi_ctx *ctx)
{
	vsi->info.mapping_flags = ctx->info.mapping_flags;
	memcpy(&vsi->info.q_mapping, &ctx->info.q_mapping,
	       sizeof(vsi->info.q_mapping));
	memcpy(&vsi->info.tc_mapping, ctx->info.tc_mapping,
	       sizeof(vsi->info.tc_mapping));
}

/**
 * ice_vsi_cfg_tc - Configure VSI Tx Sched for given TC map
 * @vsi: VSI to be configured
 * @ena_tc: TC bitmap
 *
 * VSI queues expected to be quiesced before calling this function
 */
int ice_vsi_cfg_tc(struct ice_vsi *vsi, u8 ena_tc)
{
	u16 max_txqs[ICE_MAX_TRAFFIC_CLASS] = { 0 };
	struct ice_pf *pf = vsi->back;
T
Tony Nguyen 已提交
3211
	struct ice_vsi_ctx *ctx;
3212
	enum ice_status status;
B
Brett Creeley 已提交
3213
	struct device *dev;
3214 3215 3216
	int i, ret = 0;
	u8 num_tc = 0;

B
Brett Creeley 已提交
3217 3218
	dev = ice_pf_to_dev(pf);

3219 3220 3221 3222 3223
	ice_for_each_traffic_class(i) {
		/* build bitmap of enabled TCs */
		if (ena_tc & BIT(i))
			num_tc++;
		/* populate max_txqs per TC */
3224
		max_txqs[i] = vsi->alloc_txq;
3225 3226 3227 3228 3229
	}

	vsi->tc_cfg.ena_tc = ena_tc;
	vsi->tc_cfg.numtc = num_tc;

3230
	ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
3231 3232 3233 3234 3235 3236 3237 3238 3239 3240 3241 3242
	if (!ctx)
		return -ENOMEM;

	ctx->vf_num = 0;
	ctx->info = vsi->info;

	ice_vsi_setup_q_map(vsi, ctx);

	/* must to indicate which section of VSI context are being modified */
	ctx->info.valid_sections = cpu_to_le16(ICE_AQ_VSI_PROP_RXQ_MAP_VALID);
	status = ice_update_vsi(&pf->hw, vsi->idx, ctx, NULL);
	if (status) {
B
Brett Creeley 已提交
3243
		dev_info(dev, "Failed VSI Update\n");
3244 3245 3246 3247 3248 3249 3250 3251
		ret = -EIO;
		goto out;
	}

	status = ice_cfg_vsi_lan(vsi->port_info, vsi->idx, vsi->tc_cfg.ena_tc,
				 max_txqs);

	if (status) {
3252 3253
		dev_err(dev, "VSI %d failed TC config, error %s\n",
			vsi->vsi_num, ice_stat_str(status));
3254 3255 3256 3257 3258 3259 3260 3261
		ret = -EIO;
		goto out;
	}
	ice_vsi_update_q_map(vsi, ctx);
	vsi->info.valid_sections = 0;

	ice_vsi_cfg_netdev_tc(vsi, ena_tc);
out:
3262
	kfree(ctx);
3263 3264 3265
	return ret;
}
#endif /* CONFIG_DCB */
3266

3267 3268 3269 3270 3271 3272 3273 3274
/**
 * ice_update_ring_stats - Update ring statistics
 * @ring: ring to update
 * @pkts: number of processed packets
 * @bytes: number of processed bytes
 *
 * This function assumes that caller has acquired a u64_stats_sync lock.
 */
3275
static void ice_update_ring_stats(struct ice_ring *ring, u64 pkts, u64 bytes)
3276 3277 3278 3279 3280 3281 3282 3283 3284 3285 3286 3287 3288 3289
{
	ring->stats.bytes += bytes;
	ring->stats.pkts += pkts;
}

/**
 * ice_update_tx_ring_stats - Update Tx ring specific counters
 * @tx_ring: ring to update
 * @pkts: number of processed packets
 * @bytes: number of processed bytes
 */
void ice_update_tx_ring_stats(struct ice_ring *tx_ring, u64 pkts, u64 bytes)
{
	u64_stats_update_begin(&tx_ring->syncp);
3290
	ice_update_ring_stats(tx_ring, pkts, bytes);
3291 3292 3293 3294 3295 3296 3297 3298 3299 3300 3301 3302
	u64_stats_update_end(&tx_ring->syncp);
}

/**
 * ice_update_rx_ring_stats - Update Rx ring specific counters
 * @rx_ring: ring to update
 * @pkts: number of processed packets
 * @bytes: number of processed bytes
 */
void ice_update_rx_ring_stats(struct ice_ring *rx_ring, u64 pkts, u64 bytes)
{
	u64_stats_update_begin(&rx_ring->syncp);
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	ice_update_ring_stats(rx_ring, pkts, bytes);
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	u64_stats_update_end(&rx_ring->syncp);
}

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/**
 * ice_status_to_errno - convert from enum ice_status to Linux errno
 * @err: ice_status value to convert
 */
int ice_status_to_errno(enum ice_status err)
{
	switch (err) {
	case ICE_SUCCESS:
		return 0;
	case ICE_ERR_DOES_NOT_EXIST:
		return -ENOENT;
	case ICE_ERR_OUT_OF_RANGE:
		return -ENOTTY;
	case ICE_ERR_PARAM:
		return -EINVAL;
	case ICE_ERR_NO_MEMORY:
		return -ENOMEM;
	case ICE_ERR_MAX_LIMIT:
		return -EAGAIN;
	default:
		return -EINVAL;
	}
}

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/**
 * ice_is_dflt_vsi_in_use - check if the default forwarding VSI is being used
 * @sw: switch to check if its default forwarding VSI is free
 *
 * Return true if the default forwarding VSI is already being used, else returns
 * false signalling that it's available to use.
 */
bool ice_is_dflt_vsi_in_use(struct ice_sw *sw)
{
	return (sw->dflt_vsi && sw->dflt_vsi_ena);
}

/**
 * ice_is_vsi_dflt_vsi - check if the VSI passed in is the default VSI
 * @sw: switch for the default forwarding VSI to compare against
 * @vsi: VSI to compare against default forwarding VSI
 *
 * If this VSI passed in is the default forwarding VSI then return true, else
 * return false
 */
bool ice_is_vsi_dflt_vsi(struct ice_sw *sw, struct ice_vsi *vsi)
{
	return (sw->dflt_vsi == vsi && sw->dflt_vsi_ena);
}

/**
 * ice_set_dflt_vsi - set the default forwarding VSI
 * @sw: switch used to assign the default forwarding VSI
 * @vsi: VSI getting set as the default forwarding VSI on the switch
 *
 * If the VSI passed in is already the default VSI and it's enabled just return
 * success.
 *
 * If there is already a default VSI on the switch and it's enabled then return
 * -EEXIST since there can only be one default VSI per switch.
 *
 *  Otherwise try to set the VSI passed in as the switch's default VSI and
 *  return the result.
 */
int ice_set_dflt_vsi(struct ice_sw *sw, struct ice_vsi *vsi)
{
	enum ice_status status;
	struct device *dev;

	if (!sw || !vsi)
		return -EINVAL;

	dev = ice_pf_to_dev(vsi->back);

	/* the VSI passed in is already the default VSI */
	if (ice_is_vsi_dflt_vsi(sw, vsi)) {
		dev_dbg(dev, "VSI %d passed in is already the default forwarding VSI, nothing to do\n",
			vsi->vsi_num);
		return 0;
	}

	/* another VSI is already the default VSI for this switch */
	if (ice_is_dflt_vsi_in_use(sw)) {
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		dev_err(dev, "Default forwarding VSI %d already in use, disable it and try again\n",
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			sw->dflt_vsi->vsi_num);
		return -EEXIST;
	}

	status = ice_cfg_dflt_vsi(&vsi->back->hw, vsi->idx, true, ICE_FLTR_RX);
	if (status) {
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		dev_err(dev, "Failed to set VSI %d as the default forwarding VSI, error %s\n",
			vsi->vsi_num, ice_stat_str(status));
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		return -EIO;
	}

	sw->dflt_vsi = vsi;
	sw->dflt_vsi_ena = true;

	return 0;
}

/**
 * ice_clear_dflt_vsi - clear the default forwarding VSI
 * @sw: switch used to clear the default VSI
 *
 * If the switch has no default VSI or it's not enabled then return error.
 *
 * Otherwise try to clear the default VSI and return the result.
 */
int ice_clear_dflt_vsi(struct ice_sw *sw)
{
	struct ice_vsi *dflt_vsi;
	enum ice_status status;
	struct device *dev;

	if (!sw)
		return -EINVAL;

	dev = ice_pf_to_dev(sw->pf);

	dflt_vsi = sw->dflt_vsi;

	/* there is no default VSI configured */
	if (!ice_is_dflt_vsi_in_use(sw))
		return -ENODEV;

	status = ice_cfg_dflt_vsi(&dflt_vsi->back->hw, dflt_vsi->idx, false,
				  ICE_FLTR_RX);
	if (status) {
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		dev_err(dev, "Failed to clear the default forwarding VSI %d, error %s\n",
			dflt_vsi->vsi_num, ice_stat_str(status));
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		return -EIO;
	}

	sw->dflt_vsi = NULL;
	sw->dflt_vsi_ena = false;

	return 0;
}
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/**
 * ice_set_link - turn on/off physical link
 * @vsi: VSI to modify physical link on
 * @ena: turn on/off physical link
 */
int ice_set_link(struct ice_vsi *vsi, bool ena)
{
	struct device *dev = ice_pf_to_dev(vsi->back);
	struct ice_port_info *pi = vsi->port_info;
	struct ice_hw *hw = pi->hw;
	enum ice_status status;

	if (vsi->type != ICE_VSI_PF)
		return -EINVAL;

	status = ice_aq_set_link_restart_an(pi, ena, NULL);

	/* if link is owned by manageability, FW will return ICE_AQ_RC_EMODE.
	 * this is not a fatal error, so print a warning message and return
	 * a success code. Return an error if FW returns an error code other
	 * than ICE_AQ_RC_EMODE
	 */
	if (status == ICE_ERR_AQ_ERROR) {
		if (hw->adminq.sq_last_status == ICE_AQ_RC_EMODE)
			dev_warn(dev, "can't set link to %s, err %s aq_err %s. not fatal, continuing\n",
				 (ena ? "ON" : "OFF"), ice_stat_str(status),
				 ice_aq_str(hw->adminq.sq_last_status));
	} else if (status) {
		dev_err(dev, "can't set link to %s, err %s aq_err %s\n",
			(ena ? "ON" : "OFF"), ice_stat_str(status),
			ice_aq_str(hw->adminq.sq_last_status));
		return -EIO;
	}

	return 0;
}