xref: /linux/drivers/net/ethernet/intel/ice/virt/rss.c (revision 07fdad3a93756b872da7b53647715c48d0f4a2d0)

// SPDX-License-Identifier: GPL-2.0
/* Copyright (C) 2022, Intel Corporation. */

#include "rss.h"
#include "ice_vf_lib_private.h"
#include "ice.h"

#define FIELD_SELECTOR(proto_hdr_field) \
		BIT((proto_hdr_field) & PROTO_HDR_FIELD_MASK)

struct ice_vc_hdr_match_type {
	u32 vc_hdr;	/* virtchnl headers (VIRTCHNL_PROTO_HDR_XXX) */
	u32 ice_hdr;	/* ice headers (ICE_FLOW_SEG_HDR_XXX) */
};

static const struct ice_vc_hdr_match_type ice_vc_hdr_list[] = {
	{VIRTCHNL_PROTO_HDR_NONE,	ICE_FLOW_SEG_HDR_NONE},
	{VIRTCHNL_PROTO_HDR_ETH,	ICE_FLOW_SEG_HDR_ETH},
	{VIRTCHNL_PROTO_HDR_S_VLAN,	ICE_FLOW_SEG_HDR_VLAN},
	{VIRTCHNL_PROTO_HDR_C_VLAN,	ICE_FLOW_SEG_HDR_VLAN},
	{VIRTCHNL_PROTO_HDR_IPV4,	ICE_FLOW_SEG_HDR_IPV4 |
					ICE_FLOW_SEG_HDR_IPV_OTHER},
	{VIRTCHNL_PROTO_HDR_IPV6,	ICE_FLOW_SEG_HDR_IPV6 |
					ICE_FLOW_SEG_HDR_IPV_OTHER},
	{VIRTCHNL_PROTO_HDR_TCP,	ICE_FLOW_SEG_HDR_TCP},
	{VIRTCHNL_PROTO_HDR_UDP,	ICE_FLOW_SEG_HDR_UDP},
	{VIRTCHNL_PROTO_HDR_SCTP,	ICE_FLOW_SEG_HDR_SCTP},
	{VIRTCHNL_PROTO_HDR_PPPOE,	ICE_FLOW_SEG_HDR_PPPOE},
	{VIRTCHNL_PROTO_HDR_GTPU_IP,	ICE_FLOW_SEG_HDR_GTPU_IP},
	{VIRTCHNL_PROTO_HDR_GTPU_EH,	ICE_FLOW_SEG_HDR_GTPU_EH},
	{VIRTCHNL_PROTO_HDR_GTPU_EH_PDU_DWN,
					ICE_FLOW_SEG_HDR_GTPU_DWN},
	{VIRTCHNL_PROTO_HDR_GTPU_EH_PDU_UP,
					ICE_FLOW_SEG_HDR_GTPU_UP},
	{VIRTCHNL_PROTO_HDR_L2TPV3,	ICE_FLOW_SEG_HDR_L2TPV3},
	{VIRTCHNL_PROTO_HDR_ESP,	ICE_FLOW_SEG_HDR_ESP},
	{VIRTCHNL_PROTO_HDR_AH,		ICE_FLOW_SEG_HDR_AH},
	{VIRTCHNL_PROTO_HDR_PFCP,	ICE_FLOW_SEG_HDR_PFCP_SESSION},
};

struct ice_vc_hash_field_match_type {
	u32 vc_hdr;		/* virtchnl headers
				 * (VIRTCHNL_PROTO_HDR_XXX)
				 */
	u32 vc_hash_field;	/* virtchnl hash fields selector
				 * FIELD_SELECTOR((VIRTCHNL_PROTO_HDR_ETH_XXX))
				 */
	u64 ice_hash_field;	/* ice hash fields
				 * (BIT_ULL(ICE_FLOW_FIELD_IDX_XXX))
				 */
};

static const struct
ice_vc_hash_field_match_type ice_vc_hash_field_list[] = {
	{VIRTCHNL_PROTO_HDR_ETH, FIELD_SELECTOR(VIRTCHNL_PROTO_HDR_ETH_SRC),
		BIT_ULL(ICE_FLOW_FIELD_IDX_ETH_SA)},
	{VIRTCHNL_PROTO_HDR_ETH, FIELD_SELECTOR(VIRTCHNL_PROTO_HDR_ETH_DST),
		BIT_ULL(ICE_FLOW_FIELD_IDX_ETH_DA)},
	{VIRTCHNL_PROTO_HDR_ETH, FIELD_SELECTOR(VIRTCHNL_PROTO_HDR_ETH_SRC) |
		FIELD_SELECTOR(VIRTCHNL_PROTO_HDR_ETH_DST),
		ICE_FLOW_HASH_ETH},
	{VIRTCHNL_PROTO_HDR_ETH,
		FIELD_SELECTOR(VIRTCHNL_PROTO_HDR_ETH_ETHERTYPE),
		BIT_ULL(ICE_FLOW_FIELD_IDX_ETH_TYPE)},
	{VIRTCHNL_PROTO_HDR_S_VLAN,
		FIELD_SELECTOR(VIRTCHNL_PROTO_HDR_S_VLAN_ID),
		BIT_ULL(ICE_FLOW_FIELD_IDX_S_VLAN)},
	{VIRTCHNL_PROTO_HDR_C_VLAN,
		FIELD_SELECTOR(VIRTCHNL_PROTO_HDR_C_VLAN_ID),
		BIT_ULL(ICE_FLOW_FIELD_IDX_C_VLAN)},
	{VIRTCHNL_PROTO_HDR_IPV4, FIELD_SELECTOR(VIRTCHNL_PROTO_HDR_IPV4_SRC),
		BIT_ULL(ICE_FLOW_FIELD_IDX_IPV4_SA)},
	{VIRTCHNL_PROTO_HDR_IPV4, FIELD_SELECTOR(VIRTCHNL_PROTO_HDR_IPV4_DST),
		BIT_ULL(ICE_FLOW_FIELD_IDX_IPV4_DA)},
	{VIRTCHNL_PROTO_HDR_IPV4, FIELD_SELECTOR(VIRTCHNL_PROTO_HDR_IPV4_SRC) |
		FIELD_SELECTOR(VIRTCHNL_PROTO_HDR_IPV4_DST),
		ICE_FLOW_HASH_IPV4},
	{VIRTCHNL_PROTO_HDR_IPV4, FIELD_SELECTOR(VIRTCHNL_PROTO_HDR_IPV4_SRC) |
		FIELD_SELECTOR(VIRTCHNL_PROTO_HDR_IPV4_PROT),
		BIT_ULL(ICE_FLOW_FIELD_IDX_IPV4_SA) |
		BIT_ULL(ICE_FLOW_FIELD_IDX_IPV4_PROT)},
	{VIRTCHNL_PROTO_HDR_IPV4, FIELD_SELECTOR(VIRTCHNL_PROTO_HDR_IPV4_DST) |
		FIELD_SELECTOR(VIRTCHNL_PROTO_HDR_IPV4_PROT),
		BIT_ULL(ICE_FLOW_FIELD_IDX_IPV4_DA) |
		BIT_ULL(ICE_FLOW_FIELD_IDX_IPV4_PROT)},
	{VIRTCHNL_PROTO_HDR_IPV4, FIELD_SELECTOR(VIRTCHNL_PROTO_HDR_IPV4_SRC) |
		FIELD_SELECTOR(VIRTCHNL_PROTO_HDR_IPV4_DST) |
		FIELD_SELECTOR(VIRTCHNL_PROTO_HDR_IPV4_PROT),
		ICE_FLOW_HASH_IPV4 | BIT_ULL(ICE_FLOW_FIELD_IDX_IPV4_PROT)},
	{VIRTCHNL_PROTO_HDR_IPV4, FIELD_SELECTOR(VIRTCHNL_PROTO_HDR_IPV4_PROT),
		BIT_ULL(ICE_FLOW_FIELD_IDX_IPV4_PROT)},
	{VIRTCHNL_PROTO_HDR_IPV6, FIELD_SELECTOR(VIRTCHNL_PROTO_HDR_IPV6_SRC),
		BIT_ULL(ICE_FLOW_FIELD_IDX_IPV6_SA)},
	{VIRTCHNL_PROTO_HDR_IPV6, FIELD_SELECTOR(VIRTCHNL_PROTO_HDR_IPV6_DST),
		BIT_ULL(ICE_FLOW_FIELD_IDX_IPV6_DA)},
	{VIRTCHNL_PROTO_HDR_IPV6, FIELD_SELECTOR(VIRTCHNL_PROTO_HDR_IPV6_SRC) |
		FIELD_SELECTOR(VIRTCHNL_PROTO_HDR_IPV6_DST),
		ICE_FLOW_HASH_IPV6},
	{VIRTCHNL_PROTO_HDR_IPV6, FIELD_SELECTOR(VIRTCHNL_PROTO_HDR_IPV6_SRC) |
		FIELD_SELECTOR(VIRTCHNL_PROTO_HDR_IPV6_PROT),
		BIT_ULL(ICE_FLOW_FIELD_IDX_IPV6_SA) |
		BIT_ULL(ICE_FLOW_FIELD_IDX_IPV6_PROT)},
	{VIRTCHNL_PROTO_HDR_IPV6, FIELD_SELECTOR(VIRTCHNL_PROTO_HDR_IPV6_DST) |
		FIELD_SELECTOR(VIRTCHNL_PROTO_HDR_IPV6_PROT),
		BIT_ULL(ICE_FLOW_FIELD_IDX_IPV6_DA) |
		BIT_ULL(ICE_FLOW_FIELD_IDX_IPV6_PROT)},
	{VIRTCHNL_PROTO_HDR_IPV6, FIELD_SELECTOR(VIRTCHNL_PROTO_HDR_IPV6_SRC) |
		FIELD_SELECTOR(VIRTCHNL_PROTO_HDR_IPV6_DST) |
		FIELD_SELECTOR(VIRTCHNL_PROTO_HDR_IPV6_PROT),
		ICE_FLOW_HASH_IPV6 | BIT_ULL(ICE_FLOW_FIELD_IDX_IPV6_PROT)},
	{VIRTCHNL_PROTO_HDR_IPV6, FIELD_SELECTOR(VIRTCHNL_PROTO_HDR_IPV6_PROT),
		BIT_ULL(ICE_FLOW_FIELD_IDX_IPV6_PROT)},
	{VIRTCHNL_PROTO_HDR_TCP,
		FIELD_SELECTOR(VIRTCHNL_PROTO_HDR_TCP_SRC_PORT),
		BIT_ULL(ICE_FLOW_FIELD_IDX_TCP_SRC_PORT)},
	{VIRTCHNL_PROTO_HDR_TCP,
		FIELD_SELECTOR(VIRTCHNL_PROTO_HDR_TCP_DST_PORT),
		BIT_ULL(ICE_FLOW_FIELD_IDX_TCP_DST_PORT)},
	{VIRTCHNL_PROTO_HDR_TCP,
		FIELD_SELECTOR(VIRTCHNL_PROTO_HDR_TCP_SRC_PORT) |
		FIELD_SELECTOR(VIRTCHNL_PROTO_HDR_TCP_DST_PORT),
		ICE_FLOW_HASH_TCP_PORT},
	{VIRTCHNL_PROTO_HDR_UDP,
		FIELD_SELECTOR(VIRTCHNL_PROTO_HDR_UDP_SRC_PORT),
		BIT_ULL(ICE_FLOW_FIELD_IDX_UDP_SRC_PORT)},
	{VIRTCHNL_PROTO_HDR_UDP,
		FIELD_SELECTOR(VIRTCHNL_PROTO_HDR_UDP_DST_PORT),
		BIT_ULL(ICE_FLOW_FIELD_IDX_UDP_DST_PORT)},
	{VIRTCHNL_PROTO_HDR_UDP,
		FIELD_SELECTOR(VIRTCHNL_PROTO_HDR_UDP_SRC_PORT) |
		FIELD_SELECTOR(VIRTCHNL_PROTO_HDR_UDP_DST_PORT),
		ICE_FLOW_HASH_UDP_PORT},
	{VIRTCHNL_PROTO_HDR_SCTP,
		FIELD_SELECTOR(VIRTCHNL_PROTO_HDR_SCTP_SRC_PORT),
		BIT_ULL(ICE_FLOW_FIELD_IDX_SCTP_SRC_PORT)},
	{VIRTCHNL_PROTO_HDR_SCTP,
		FIELD_SELECTOR(VIRTCHNL_PROTO_HDR_SCTP_DST_PORT),
		BIT_ULL(ICE_FLOW_FIELD_IDX_SCTP_DST_PORT)},
	{VIRTCHNL_PROTO_HDR_SCTP,
		FIELD_SELECTOR(VIRTCHNL_PROTO_HDR_SCTP_SRC_PORT) |
		FIELD_SELECTOR(VIRTCHNL_PROTO_HDR_SCTP_DST_PORT),
		ICE_FLOW_HASH_SCTP_PORT},
	{VIRTCHNL_PROTO_HDR_PPPOE,
		FIELD_SELECTOR(VIRTCHNL_PROTO_HDR_PPPOE_SESS_ID),
		BIT_ULL(ICE_FLOW_FIELD_IDX_PPPOE_SESS_ID)},
	{VIRTCHNL_PROTO_HDR_GTPU_IP,
		FIELD_SELECTOR(VIRTCHNL_PROTO_HDR_GTPU_IP_TEID),
		BIT_ULL(ICE_FLOW_FIELD_IDX_GTPU_IP_TEID)},
	{VIRTCHNL_PROTO_HDR_L2TPV3,
		FIELD_SELECTOR(VIRTCHNL_PROTO_HDR_L2TPV3_SESS_ID),
		BIT_ULL(ICE_FLOW_FIELD_IDX_L2TPV3_SESS_ID)},
	{VIRTCHNL_PROTO_HDR_ESP, FIELD_SELECTOR(VIRTCHNL_PROTO_HDR_ESP_SPI),
		BIT_ULL(ICE_FLOW_FIELD_IDX_ESP_SPI)},
	{VIRTCHNL_PROTO_HDR_AH, FIELD_SELECTOR(VIRTCHNL_PROTO_HDR_AH_SPI),
		BIT_ULL(ICE_FLOW_FIELD_IDX_AH_SPI)},
	{VIRTCHNL_PROTO_HDR_PFCP, FIELD_SELECTOR(VIRTCHNL_PROTO_HDR_PFCP_SEID),
		BIT_ULL(ICE_FLOW_FIELD_IDX_PFCP_SEID)},
};

/**
 * ice_vc_validate_pattern
 * @vf: pointer to the VF info
 * @proto: virtchnl protocol headers
 *
 * validate the pattern is supported or not.
 *
 * Return: true on success, false on error.
 */
bool
ice_vc_validate_pattern(struct ice_vf *vf, struct virtchnl_proto_hdrs *proto)
{
	bool is_ipv4 = false;
	bool is_ipv6 = false;
	bool is_udp = false;
	u16 ptype = -1;
	int i = 0;

	while (i < proto->count &&
	       proto->proto_hdr[i].type != VIRTCHNL_PROTO_HDR_NONE) {
		switch (proto->proto_hdr[i].type) {
		case VIRTCHNL_PROTO_HDR_ETH:
			ptype = ICE_PTYPE_MAC_PAY;
			break;
		case VIRTCHNL_PROTO_HDR_IPV4:
			ptype = ICE_PTYPE_IPV4_PAY;
			is_ipv4 = true;
			break;
		case VIRTCHNL_PROTO_HDR_IPV6:
			ptype = ICE_PTYPE_IPV6_PAY;
			is_ipv6 = true;
			break;
		case VIRTCHNL_PROTO_HDR_UDP:
			if (is_ipv4)
				ptype = ICE_PTYPE_IPV4_UDP_PAY;
			else if (is_ipv6)
				ptype = ICE_PTYPE_IPV6_UDP_PAY;
			is_udp = true;
			break;
		case VIRTCHNL_PROTO_HDR_TCP:
			if (is_ipv4)
				ptype = ICE_PTYPE_IPV4_TCP_PAY;
			else if (is_ipv6)
				ptype = ICE_PTYPE_IPV6_TCP_PAY;
			break;
		case VIRTCHNL_PROTO_HDR_SCTP:
			if (is_ipv4)
				ptype = ICE_PTYPE_IPV4_SCTP_PAY;
			else if (is_ipv6)
				ptype = ICE_PTYPE_IPV6_SCTP_PAY;
			break;
		case VIRTCHNL_PROTO_HDR_GTPU_IP:
		case VIRTCHNL_PROTO_HDR_GTPU_EH:
			if (is_ipv4)
				ptype = ICE_MAC_IPV4_GTPU;
			else if (is_ipv6)
				ptype = ICE_MAC_IPV6_GTPU;
			goto out;
		case VIRTCHNL_PROTO_HDR_L2TPV3:
			if (is_ipv4)
				ptype = ICE_MAC_IPV4_L2TPV3;
			else if (is_ipv6)
				ptype = ICE_MAC_IPV6_L2TPV3;
			goto out;
		case VIRTCHNL_PROTO_HDR_ESP:
			if (is_ipv4)
				ptype = is_udp ? ICE_MAC_IPV4_NAT_T_ESP :
						ICE_MAC_IPV4_ESP;
			else if (is_ipv6)
				ptype = is_udp ? ICE_MAC_IPV6_NAT_T_ESP :
						ICE_MAC_IPV6_ESP;
			goto out;
		case VIRTCHNL_PROTO_HDR_AH:
			if (is_ipv4)
				ptype = ICE_MAC_IPV4_AH;
			else if (is_ipv6)
				ptype = ICE_MAC_IPV6_AH;
			goto out;
		case VIRTCHNL_PROTO_HDR_PFCP:
			if (is_ipv4)
				ptype = ICE_MAC_IPV4_PFCP_SESSION;
			else if (is_ipv6)
				ptype = ICE_MAC_IPV6_PFCP_SESSION;
			goto out;
		default:
			break;
		}
		i++;
	}

out:
	return ice_hw_ptype_ena(&vf->pf->hw, ptype);
}

/**
 * ice_vc_parse_rss_cfg - parses hash fields and headers from
 * a specific virtchnl RSS cfg
 * @hw: pointer to the hardware
 * @rss_cfg: pointer to the virtchnl RSS cfg
 * @hash_cfg: pointer to the HW hash configuration
 *
 * Return true if all the protocol header and hash fields in the RSS cfg could
 * be parsed, else return false
 *
 * This function parses the virtchnl RSS cfg to be the intended
 * hash fields and the intended header for RSS configuration
 */
static bool ice_vc_parse_rss_cfg(struct ice_hw *hw,
				 struct virtchnl_rss_cfg *rss_cfg,
				 struct ice_rss_hash_cfg *hash_cfg)
{
	const struct ice_vc_hash_field_match_type *hf_list;
	const struct ice_vc_hdr_match_type *hdr_list;
	int i, hf_list_len, hdr_list_len;
	u32 *addl_hdrs = &hash_cfg->addl_hdrs;
	u64 *hash_flds = &hash_cfg->hash_flds;

	/* set outer layer RSS as default */
	hash_cfg->hdr_type = ICE_RSS_OUTER_HEADERS;

	if (rss_cfg->rss_algorithm == VIRTCHNL_RSS_ALG_TOEPLITZ_SYMMETRIC)
		hash_cfg->symm = true;
	else
		hash_cfg->symm = false;

	hf_list = ice_vc_hash_field_list;
	hf_list_len = ARRAY_SIZE(ice_vc_hash_field_list);
	hdr_list = ice_vc_hdr_list;
	hdr_list_len = ARRAY_SIZE(ice_vc_hdr_list);

	for (i = 0; i < rss_cfg->proto_hdrs.count; i++) {
		struct virtchnl_proto_hdr *proto_hdr =
					&rss_cfg->proto_hdrs.proto_hdr[i];
		bool hdr_found = false;
		int j;

		/* Find matched ice headers according to virtchnl headers. */
		for (j = 0; j < hdr_list_len; j++) {
			struct ice_vc_hdr_match_type hdr_map = hdr_list[j];

			if (proto_hdr->type == hdr_map.vc_hdr) {
				*addl_hdrs |= hdr_map.ice_hdr;
				hdr_found = true;
			}
		}

		if (!hdr_found)
			return false;

		/* Find matched ice hash fields according to
		 * virtchnl hash fields.
		 */
		for (j = 0; j < hf_list_len; j++) {
			struct ice_vc_hash_field_match_type hf_map = hf_list[j];

			if (proto_hdr->type == hf_map.vc_hdr &&
			    proto_hdr->field_selector == hf_map.vc_hash_field) {
				*hash_flds |= hf_map.ice_hash_field;
				break;
			}
		}
	}

	return true;
}

/**
 * ice_vf_adv_rss_offload_ena - determine if capabilities support advanced
 * RSS offloads
 * @caps: VF driver negotiated capabilities
 *
 * Return true if VIRTCHNL_VF_OFFLOAD_ADV_RSS_PF capability is set,
 * else return false
 */
static bool ice_vf_adv_rss_offload_ena(u32 caps)
{
	return !!(caps & VIRTCHNL_VF_OFFLOAD_ADV_RSS_PF);
}

/**
 * ice_vc_handle_rss_cfg
 * @vf: pointer to the VF info
 * @msg: pointer to the message buffer
 * @add: add a RSS config if true, otherwise delete a RSS config
 *
 * This function adds/deletes a RSS config
 */
int ice_vc_handle_rss_cfg(struct ice_vf *vf, u8 *msg, bool add)
{
	u32 v_opcode = add ? VIRTCHNL_OP_ADD_RSS_CFG : VIRTCHNL_OP_DEL_RSS_CFG;
	struct virtchnl_rss_cfg *rss_cfg = (struct virtchnl_rss_cfg *)msg;
	enum virtchnl_status_code v_ret = VIRTCHNL_STATUS_SUCCESS;
	struct device *dev = ice_pf_to_dev(vf->pf);
	struct ice_hw *hw = &vf->pf->hw;
	struct ice_vsi *vsi;

	if (!test_bit(ICE_FLAG_RSS_ENA, vf->pf->flags)) {
		dev_dbg(dev, "VF %d attempting to configure RSS, but RSS is not supported by the PF\n",
			vf->vf_id);
		v_ret = VIRTCHNL_STATUS_ERR_NOT_SUPPORTED;
		goto error_param;
	}

	if (!ice_vf_adv_rss_offload_ena(vf->driver_caps)) {
		dev_dbg(dev, "VF %d attempting to configure RSS, but Advanced RSS offload is not supported\n",
			vf->vf_id);
		v_ret = VIRTCHNL_STATUS_ERR_PARAM;
		goto error_param;
	}

	if (!test_bit(ICE_VF_STATE_ACTIVE, vf->vf_states)) {
		v_ret = VIRTCHNL_STATUS_ERR_PARAM;
		goto error_param;
	}

	if (rss_cfg->proto_hdrs.count > VIRTCHNL_MAX_NUM_PROTO_HDRS ||
	    rss_cfg->rss_algorithm < VIRTCHNL_RSS_ALG_TOEPLITZ_ASYMMETRIC ||
	    rss_cfg->rss_algorithm > VIRTCHNL_RSS_ALG_XOR_SYMMETRIC) {
		dev_dbg(dev, "VF %d attempting to configure RSS, but RSS configuration is not valid\n",
			vf->vf_id);
		v_ret = VIRTCHNL_STATUS_ERR_PARAM;
		goto error_param;
	}

	vsi = ice_get_vf_vsi(vf);
	if (!vsi) {
		v_ret = VIRTCHNL_STATUS_ERR_PARAM;
		goto error_param;
	}

	if (!ice_vc_validate_pattern(vf, &rss_cfg->proto_hdrs)) {
		v_ret = VIRTCHNL_STATUS_ERR_PARAM;
		goto error_param;
	}

	if (rss_cfg->rss_algorithm == VIRTCHNL_RSS_ALG_R_ASYMMETRIC) {
		struct ice_vsi_ctx *ctx;
		u8 lut_type, hash_type;
		int status;

		lut_type = ICE_AQ_VSI_Q_OPT_RSS_LUT_VSI;
		hash_type = add ? ICE_AQ_VSI_Q_OPT_RSS_HASH_XOR :
				ICE_AQ_VSI_Q_OPT_RSS_HASH_TPLZ;

		ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
		if (!ctx) {
			v_ret = VIRTCHNL_STATUS_ERR_NO_MEMORY;
			goto error_param;
		}

		ctx->info.q_opt_rss =
			FIELD_PREP(ICE_AQ_VSI_Q_OPT_RSS_LUT_M, lut_type) |
			FIELD_PREP(ICE_AQ_VSI_Q_OPT_RSS_HASH_M, hash_type);

		/* Preserve existing queueing option setting */
		ctx->info.q_opt_rss |= (vsi->info.q_opt_rss &
					  ICE_AQ_VSI_Q_OPT_RSS_GBL_LUT_M);
		ctx->info.q_opt_tc = vsi->info.q_opt_tc;
		ctx->info.q_opt_flags = vsi->info.q_opt_rss;

		ctx->info.valid_sections =
				cpu_to_le16(ICE_AQ_VSI_PROP_Q_OPT_VALID);

		status = ice_update_vsi(hw, vsi->idx, ctx, NULL);
		if (status) {
			dev_err(dev, "update VSI for RSS failed, err %d aq_err %s\n",
				status, libie_aq_str(hw->adminq.sq_last_status));
			v_ret = VIRTCHNL_STATUS_ERR_PARAM;
		} else {
			vsi->info.q_opt_rss = ctx->info.q_opt_rss;
		}

		kfree(ctx);
	} else {
		struct ice_rss_hash_cfg cfg;

		/* Only check for none raw pattern case */
		if (!ice_vc_validate_pattern(vf, &rss_cfg->proto_hdrs)) {
			v_ret = VIRTCHNL_STATUS_ERR_PARAM;
			goto error_param;
		}
		cfg.addl_hdrs = ICE_FLOW_SEG_HDR_NONE;
		cfg.hash_flds = ICE_HASH_INVALID;
		cfg.hdr_type = ICE_RSS_ANY_HEADERS;

		if (!ice_vc_parse_rss_cfg(hw, rss_cfg, &cfg)) {
			v_ret = VIRTCHNL_STATUS_ERR_PARAM;
			goto error_param;
		}

		if (add) {
			if (ice_add_rss_cfg(hw, vsi, &cfg)) {
				v_ret = VIRTCHNL_STATUS_ERR_PARAM;
				dev_err(dev, "ice_add_rss_cfg failed for vsi = %d, v_ret = %d\n",
					vsi->vsi_num, v_ret);
			}
		} else {
			int status;

			status = ice_rem_rss_cfg(hw, vsi->idx, &cfg);
			/* We just ignore -ENOENT, because if two configurations
			 * share the same profile remove one of them actually
			 * removes both, since the profile is deleted.
			 */
			if (status && status != -ENOENT) {
				v_ret = VIRTCHNL_STATUS_ERR_PARAM;
				dev_err(dev, "ice_rem_rss_cfg failed for VF ID:%d, error:%d\n",
					vf->vf_id, status);
			}
		}
	}

error_param:
	return ice_vc_send_msg_to_vf(vf, v_opcode, v_ret, NULL, 0);
}

/**
 * ice_vc_config_rss_key
 * @vf: pointer to the VF info
 * @msg: pointer to the msg buffer
 *
 * Configure the VF's RSS key
 */
int ice_vc_config_rss_key(struct ice_vf *vf, u8 *msg)
{
	enum virtchnl_status_code v_ret = VIRTCHNL_STATUS_SUCCESS;
	struct virtchnl_rss_key *vrk =
		(struct virtchnl_rss_key *)msg;
	struct ice_vsi *vsi;

	if (!test_bit(ICE_VF_STATE_ACTIVE, vf->vf_states)) {
		v_ret = VIRTCHNL_STATUS_ERR_PARAM;
		goto error_param;
	}

	if (!ice_vc_isvalid_vsi_id(vf, vrk->vsi_id)) {
		v_ret = VIRTCHNL_STATUS_ERR_PARAM;
		goto error_param;
	}

	if (vrk->key_len != ICE_VSIQF_HKEY_ARRAY_SIZE) {
		v_ret = VIRTCHNL_STATUS_ERR_PARAM;
		goto error_param;
	}

	if (!test_bit(ICE_FLAG_RSS_ENA, vf->pf->flags)) {
		v_ret = VIRTCHNL_STATUS_ERR_PARAM;
		goto error_param;
	}

	vsi = ice_get_vf_vsi(vf);
	if (!vsi) {
		v_ret = VIRTCHNL_STATUS_ERR_PARAM;
		goto error_param;
	}

	if (ice_set_rss_key(vsi, vrk->key))
		v_ret = VIRTCHNL_STATUS_ERR_ADMIN_QUEUE_ERROR;
error_param:
	return ice_vc_send_msg_to_vf(vf, VIRTCHNL_OP_CONFIG_RSS_KEY, v_ret,
				     NULL, 0);
}

/**
 * ice_vc_config_rss_lut
 * @vf: pointer to the VF info
 * @msg: pointer to the msg buffer
 *
 * Configure the VF's RSS LUT
 */
int ice_vc_config_rss_lut(struct ice_vf *vf, u8 *msg)
{
	struct virtchnl_rss_lut *vrl = (struct virtchnl_rss_lut *)msg;
	enum virtchnl_status_code v_ret = VIRTCHNL_STATUS_SUCCESS;
	struct ice_vsi *vsi;

	if (!test_bit(ICE_VF_STATE_ACTIVE, vf->vf_states)) {
		v_ret = VIRTCHNL_STATUS_ERR_PARAM;
		goto error_param;
	}

	if (!ice_vc_isvalid_vsi_id(vf, vrl->vsi_id)) {
		v_ret = VIRTCHNL_STATUS_ERR_PARAM;
		goto error_param;
	}

	if (vrl->lut_entries != ICE_LUT_VSI_SIZE) {
		v_ret = VIRTCHNL_STATUS_ERR_PARAM;
		goto error_param;
	}

	if (!test_bit(ICE_FLAG_RSS_ENA, vf->pf->flags)) {
		v_ret = VIRTCHNL_STATUS_ERR_PARAM;
		goto error_param;
	}

	vsi = ice_get_vf_vsi(vf);
	if (!vsi) {
		v_ret = VIRTCHNL_STATUS_ERR_PARAM;
		goto error_param;
	}

	if (ice_set_rss_lut(vsi, vrl->lut, ICE_LUT_VSI_SIZE))
		v_ret = VIRTCHNL_STATUS_ERR_ADMIN_QUEUE_ERROR;
error_param:
	return ice_vc_send_msg_to_vf(vf, VIRTCHNL_OP_CONFIG_RSS_LUT, v_ret,
				     NULL, 0);
}

/**
 * ice_vc_config_rss_hfunc
 * @vf: pointer to the VF info
 * @msg: pointer to the msg buffer
 *
 * Configure the VF's RSS Hash function
 */
int ice_vc_config_rss_hfunc(struct ice_vf *vf, u8 *msg)
{
	struct virtchnl_rss_hfunc *vrh = (struct virtchnl_rss_hfunc *)msg;
	enum virtchnl_status_code v_ret = VIRTCHNL_STATUS_SUCCESS;
	u8 hfunc = ICE_AQ_VSI_Q_OPT_RSS_HASH_TPLZ;
	struct ice_vsi *vsi;

	if (!test_bit(ICE_VF_STATE_ACTIVE, vf->vf_states)) {
		v_ret = VIRTCHNL_STATUS_ERR_PARAM;
		goto error_param;
	}

	if (!ice_vc_isvalid_vsi_id(vf, vrh->vsi_id)) {
		v_ret = VIRTCHNL_STATUS_ERR_PARAM;
		goto error_param;
	}

	if (!test_bit(ICE_FLAG_RSS_ENA, vf->pf->flags)) {
		v_ret = VIRTCHNL_STATUS_ERR_PARAM;
		goto error_param;
	}

	vsi = ice_get_vf_vsi(vf);
	if (!vsi) {
		v_ret = VIRTCHNL_STATUS_ERR_PARAM;
		goto error_param;
	}

	if (vrh->rss_algorithm == VIRTCHNL_RSS_ALG_TOEPLITZ_SYMMETRIC)
		hfunc = ICE_AQ_VSI_Q_OPT_RSS_HASH_SYM_TPLZ;

	if (ice_set_rss_hfunc(vsi, hfunc))
		v_ret = VIRTCHNL_STATUS_ERR_ADMIN_QUEUE_ERROR;
error_param:
	return ice_vc_send_msg_to_vf(vf, VIRTCHNL_OP_CONFIG_RSS_HFUNC, v_ret,
				     NULL, 0);
}

/**
 * ice_vc_get_rss_hashcfg - return the RSS Hash configuration
 * @vf: pointer to the VF info
 */
int ice_vc_get_rss_hashcfg(struct ice_vf *vf)
{
	enum virtchnl_status_code v_ret = VIRTCHNL_STATUS_SUCCESS;
	struct virtchnl_rss_hashcfg *vrh = NULL;
	int len = 0, ret;

	if (!test_bit(ICE_VF_STATE_ACTIVE, vf->vf_states)) {
		v_ret = VIRTCHNL_STATUS_ERR_PARAM;
		goto err;
	}

	if (!test_bit(ICE_FLAG_RSS_ENA, vf->pf->flags)) {
		dev_err(ice_pf_to_dev(vf->pf), "RSS not supported by PF\n");
		v_ret = VIRTCHNL_STATUS_ERR_PARAM;
		goto err;
	}

	len = sizeof(struct virtchnl_rss_hashcfg);
	vrh = kzalloc(len, GFP_KERNEL);
	if (!vrh) {
		v_ret = VIRTCHNL_STATUS_ERR_NO_MEMORY;
		len = 0;
		goto err;
	}

	vrh->hashcfg = ICE_DEFAULT_RSS_HASHCFG;
err:
	/* send the response back to the VF */
	ret = ice_vc_send_msg_to_vf(vf, VIRTCHNL_OP_GET_RSS_HASHCFG_CAPS, v_ret,
				    (u8 *)vrh, len);
	kfree(vrh);
	return ret;
}

/**
 * ice_vc_set_rss_hashcfg - set RSS Hash configuration bits for the VF
 * @vf: pointer to the VF info
 * @msg: pointer to the msg buffer
 */
int ice_vc_set_rss_hashcfg(struct ice_vf *vf, u8 *msg)
{
	struct virtchnl_rss_hashcfg *vrh = (struct virtchnl_rss_hashcfg *)msg;
	enum virtchnl_status_code v_ret = VIRTCHNL_STATUS_SUCCESS;
	struct ice_pf *pf = vf->pf;
	struct ice_vsi *vsi;
	struct device *dev;
	int status;

	dev = ice_pf_to_dev(pf);

	if (!test_bit(ICE_VF_STATE_ACTIVE, vf->vf_states)) {
		v_ret = VIRTCHNL_STATUS_ERR_PARAM;
		goto err;
	}

	if (!test_bit(ICE_FLAG_RSS_ENA, pf->flags)) {
		dev_err(dev, "RSS not supported by PF\n");
		v_ret = VIRTCHNL_STATUS_ERR_PARAM;
		goto err;
	}

	vsi = ice_get_vf_vsi(vf);
	if (!vsi) {
		v_ret = VIRTCHNL_STATUS_ERR_PARAM;
		goto err;
	}

	/* clear all previously programmed RSS configuration to allow VF drivers
	 * the ability to customize the RSS configuration and/or completely
	 * disable RSS
	 */
	status = ice_rem_vsi_rss_cfg(&pf->hw, vsi->idx);
	if (status && !vrh->hashcfg) {
		/* only report failure to clear the current RSS configuration if
		 * that was clearly the VF's intention (i.e. vrh->hashcfg = 0)
		 */
		v_ret = ice_err_to_virt_err(status);
		goto err;
	} else if (status) {
		/* allow the VF to update the RSS configuration even on failure
		 * to clear the current RSS confguration in an attempt to keep
		 * RSS in a working state
		 */
		dev_warn(dev, "Failed to clear the RSS configuration for VF %u\n",
			 vf->vf_id);
	}

	if (vrh->hashcfg) {
		status = ice_add_avf_rss_cfg(&pf->hw, vsi, vrh->hashcfg);
		v_ret = ice_err_to_virt_err(status);
	}

	/* save the requested VF configuration */
	if (!v_ret)
		vf->rss_hashcfg = vrh->hashcfg;

	/* send the response to the VF */
err:
	return ice_vc_send_msg_to_vf(vf, VIRTCHNL_OP_SET_RSS_HASHCFG, v_ret,
				     NULL, 0);
}