1 files changed, 207 insertions, 12 deletions

diff --git a/drivers/net/ethernet/intel/ice/ice_virtchnl.c b/drivers/net/ethernet/intel/ice/ice_virtchnl.c
index 2b4c791b6cba..e24e3f5017ca 100644
--- a/drivers/net/ethernet/intel/ice/ice_virtchnl.c
+++ b/drivers/net/ethernet/intel/ice/ice_virtchnl.c
@@ -462,6 +462,9 @@ static int ice_vc_get_vf_res_msg(struct ice_vf *vf, u8 *msg)
 			vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RSS_REG;
 	}
 
+	if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RX_FLEX_DESC)
+		vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RX_FLEX_DESC;
+
 	if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_FDIR_PF)
 		vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_FDIR_PF;
 
@@ -504,7 +507,7 @@ static int ice_vc_get_vf_res_msg(struct ice_vf *vf, u8 *msg)
 	vfres->vsi_res[0].vsi_type = VIRTCHNL_VSI_SRIOV;
 	vfres->vsi_res[0].num_queue_pairs = vsi->num_txq;
 	ether_addr_copy(vfres->vsi_res[0].default_mac_addr,
-			vf->hw_lan_addr.addr);
+			vf->hw_lan_addr);
 
 	/* match guest capabilities */
 	vf->driver_caps = vfres->vf_cap_flags;
@@ -1658,6 +1661,7 @@ static int ice_vc_cfg_qs_msg(struct ice_vf *vf, u8 *msg)
 		/* copy Rx queue info from VF into VSI */
 		if (qpi->rxq.ring_len > 0) {
 			u16 max_frame_size = ice_vc_get_max_frame_size(vf);
+			u32 rxdid;
 
 			vsi->rx_rings[i]->dma = qpi->rxq.dma_ring_addr;
 			vsi->rx_rings[i]->count = qpi->rxq.ring_len;
@@ -1685,6 +1689,24 @@ static int ice_vc_cfg_qs_msg(struct ice_vf *vf, u8 *msg)
 					 vf->vf_id, i);
 				goto error_param;
 			}
+
+			/* If Rx flex desc is supported, select RXDID for Rx
+			 * queues. Otherwise, use legacy 32byte descriptor
+			 * format. Legacy 16byte descriptor is not supported.
+			 * If this RXDID is selected, return error.
+			 */
+			if (vf->driver_caps &
+			    VIRTCHNL_VF_OFFLOAD_RX_FLEX_DESC) {
+				rxdid = qpi->rxq.rxdid;
+				if (!(BIT(rxdid) & pf->supported_rxdids))
+					goto error_param;
+			} else {
+				rxdid = ICE_RXDID_LEGACY_1;
+			}
+
+			ice_write_qrxflxp_cntxt(&vsi->back->hw,
+						vsi->rxq_map[q_idx],
+						rxdid, 0x03, false);
 		}
 	}
 
@@ -1780,10 +1802,10 @@ ice_vfhw_mac_add(struct ice_vf *vf, struct virtchnl_ether_addr *vc_ether_addr)
 	 * was correctly specified over VIRTCHNL
 	 */
 	if ((ice_is_vc_addr_legacy(vc_ether_addr) &&
-	     is_zero_ether_addr(vf->hw_lan_addr.addr)) ||
+	     is_zero_ether_addr(vf->hw_lan_addr)) ||
 	    ice_is_vc_addr_primary(vc_ether_addr)) {
-		ether_addr_copy(vf->dev_lan_addr.addr, mac_addr);
-		ether_addr_copy(vf->hw_lan_addr.addr, mac_addr);
+		ether_addr_copy(vf->dev_lan_addr, mac_addr);
+		ether_addr_copy(vf->hw_lan_addr, mac_addr);
 	}
 
 	/* hardware and device MACs are already set, but its possible that the
@@ -1814,7 +1836,7 @@ ice_vc_add_mac_addr(struct ice_vf *vf, struct ice_vsi *vsi,
 	int ret;
 
 	/* device MAC already added */
-	if (ether_addr_equal(mac_addr, vf->dev_lan_addr.addr))
+	if (ether_addr_equal(mac_addr, vf->dev_lan_addr))
 		return 0;
 
 	if (is_unicast_ether_addr(mac_addr) && !ice_can_vf_change_mac(vf)) {
@@ -1869,8 +1891,8 @@ ice_update_legacy_cached_mac(struct ice_vf *vf,
 	    ice_is_legacy_umac_expired(&vf->legacy_last_added_umac))
 		return;
 
-	ether_addr_copy(vf->dev_lan_addr.addr, vf->legacy_last_added_umac.addr);
-	ether_addr_copy(vf->hw_lan_addr.addr, vf->legacy_last_added_umac.addr);
+	ether_addr_copy(vf->dev_lan_addr, vf->legacy_last_added_umac.addr);
+	ether_addr_copy(vf->hw_lan_addr, vf->legacy_last_added_umac.addr);
 }
 
 /**
@@ -1884,15 +1906,15 @@ ice_vfhw_mac_del(struct ice_vf *vf, struct virtchnl_ether_addr *vc_ether_addr)
 	u8 *mac_addr = vc_ether_addr->addr;
 
 	if (!is_valid_ether_addr(mac_addr) ||
-	    !ether_addr_equal(vf->dev_lan_addr.addr, mac_addr))
+	    !ether_addr_equal(vf->dev_lan_addr, mac_addr))
 		return;
 
 	/* allow the device MAC to be repopulated in the add flow and don't
-	 * clear the hardware MAC (i.e. hw_lan_addr.addr) here as that is meant
+	 * clear the hardware MAC (i.e. hw_lan_addr) here as that is meant
 	 * to be persistent on VM reboot and across driver unload/load, which
 	 * won't work if we clear the hardware MAC here
 	 */
-	eth_zero_addr(vf->dev_lan_addr.addr);
+	eth_zero_addr(vf->dev_lan_addr);
 
 	ice_update_legacy_cached_mac(vf, vc_ether_addr);
 }
@@ -1912,7 +1934,7 @@ ice_vc_del_mac_addr(struct ice_vf *vf, struct ice_vsi *vsi,
 	int status;
 
 	if (!ice_can_vf_change_mac(vf) &&
-	    ether_addr_equal(vf->dev_lan_addr.addr, mac_addr))
+	    ether_addr_equal(vf->dev_lan_addr, mac_addr))
 		return 0;
 
 	status = ice_fltr_remove_mac(vsi, mac_addr, ICE_FWD_TO_VSI);
@@ -2457,6 +2479,164 @@ error_param:
 }
 
 /**
+ * ice_vc_get_rss_hena - return the RSS HENA bits allowed by the hardware
+ * @vf: pointer to the VF info
+ */
+static int ice_vc_get_rss_hena(struct ice_vf *vf)
+{
+	enum virtchnl_status_code v_ret = VIRTCHNL_STATUS_SUCCESS;
+	struct virtchnl_rss_hena *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_hena);
+	vrh = kzalloc(len, GFP_KERNEL);
+	if (!vrh) {
+		v_ret = VIRTCHNL_STATUS_ERR_NO_MEMORY;
+		len = 0;
+		goto err;
+	}
+
+	vrh->hena = ICE_DEFAULT_RSS_HENA;
+err:
+	/* send the response back to the VF */
+	ret = ice_vc_send_msg_to_vf(vf, VIRTCHNL_OP_GET_RSS_HENA_CAPS, v_ret,
+				    (u8 *)vrh, len);
+	kfree(vrh);
+	return ret;
+}
+
+/**
+ * ice_vc_set_rss_hena - set RSS HENA bits for the VF
+ * @vf: pointer to the VF info
+ * @msg: pointer to the msg buffer
+ */
+static int ice_vc_set_rss_hena(struct ice_vf *vf, u8 *msg)
+{
+	struct virtchnl_rss_hena *vrh = (struct virtchnl_rss_hena *)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->hena) {
+		/* only report failure to clear the current RSS configuration if
+		 * that was clearly the VF's intention (i.e. vrh->hena = 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->hena) {
+		status = ice_add_avf_rss_cfg(&pf->hw, vsi->idx, vrh->hena);
+		v_ret = ice_err_to_virt_err(status);
+	}
+
+	/* send the response to the VF */
+err:
+	return ice_vc_send_msg_to_vf(vf, VIRTCHNL_OP_SET_RSS_HENA, v_ret,
+				     NULL, 0);
+}
+
+/**
+ * ice_vc_query_rxdid - query RXDID supported by DDP package
+ * @vf: pointer to VF info
+ *
+ * Called from VF to query a bitmap of supported flexible
+ * descriptor RXDIDs of a DDP package.
+ */
+static int ice_vc_query_rxdid(struct ice_vf *vf)
+{
+	enum virtchnl_status_code v_ret = VIRTCHNL_STATUS_SUCCESS;
+	struct virtchnl_supported_rxdids *rxdid = NULL;
+	struct ice_hw *hw = &vf->pf->hw;
+	struct ice_pf *pf = vf->pf;
+	int len = 0;
+	int ret, i;
+	u32 regval;
+
+	if (!test_bit(ICE_VF_STATE_ACTIVE, vf->vf_states)) {
+		v_ret = VIRTCHNL_STATUS_ERR_PARAM;
+		goto err;
+	}
+
+	if (!(vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RX_FLEX_DESC)) {
+		v_ret = VIRTCHNL_STATUS_ERR_PARAM;
+		goto err;
+	}
+
+	len = sizeof(struct virtchnl_supported_rxdids);
+	rxdid = kzalloc(len, GFP_KERNEL);
+	if (!rxdid) {
+		v_ret = VIRTCHNL_STATUS_ERR_NO_MEMORY;
+		len = 0;
+		goto err;
+	}
+
+	/* Read flexiflag registers to determine whether the
+	 * corresponding RXDID is configured and supported or not.
+	 * Since Legacy 16byte descriptor format is not supported,
+	 * start from Legacy 32byte descriptor.
+	 */
+	for (i = ICE_RXDID_LEGACY_1; i < ICE_FLEX_DESC_RXDID_MAX_NUM; i++) {
+		regval = rd32(hw, GLFLXP_RXDID_FLAGS(i, 0));
+		if ((regval >> GLFLXP_RXDID_FLAGS_FLEXIFLAG_4N_S)
+			& GLFLXP_RXDID_FLAGS_FLEXIFLAG_4N_M)
+			rxdid->supported_rxdids |= BIT(i);
+	}
+
+	pf->supported_rxdids = rxdid->supported_rxdids;
+
+err:
+	ret = ice_vc_send_msg_to_vf(vf, VIRTCHNL_OP_GET_SUPPORTED_RXDIDS,
+				    v_ret, (u8 *)rxdid, len);
+	kfree(rxdid);
+	return ret;
+}
+
+/**
  * ice_vf_init_vlan_stripping - enable/disable VLAN stripping on initialization
  * @vf: VF to enable/disable VLAN stripping for on initialization
  *
@@ -3490,6 +3670,9 @@ static const struct ice_virtchnl_ops ice_virtchnl_dflt_ops = {
 	.cfg_promiscuous_mode_msg = ice_vc_cfg_promiscuous_mode_msg,
 	.add_vlan_msg = ice_vc_add_vlan_msg,
 	.remove_vlan_msg = ice_vc_remove_vlan_msg,
+	.query_rxdid = ice_vc_query_rxdid,
+	.get_rss_hena = ice_vc_get_rss_hena,
+	.set_rss_hena_msg = ice_vc_set_rss_hena,
 	.ena_vlan_stripping = ice_vc_ena_vlan_stripping,
 	.dis_vlan_stripping = ice_vc_dis_vlan_stripping,
 	.handle_rss_cfg_msg = ice_vc_handle_rss_cfg,
@@ -3550,7 +3733,7 @@ static int ice_vc_repr_add_mac(struct ice_vf *vf, u8 *msg)
 		int result;
 
 		if (!is_unicast_ether_addr(mac_addr) ||
-		    ether_addr_equal(mac_addr, vf->hw_lan_addr.addr))
+		    ether_addr_equal(mac_addr, vf->hw_lan_addr))
 			continue;
 
 		if (vf->pf_set_mac) {
@@ -3624,6 +3807,9 @@ static const struct ice_virtchnl_ops ice_virtchnl_repr_ops = {
 	.cfg_promiscuous_mode_msg = ice_vc_repr_cfg_promiscuous_mode,
 	.add_vlan_msg = ice_vc_add_vlan_msg,
 	.remove_vlan_msg = ice_vc_remove_vlan_msg,
+	.query_rxdid = ice_vc_query_rxdid,
+	.get_rss_hena = ice_vc_get_rss_hena,
+	.set_rss_hena_msg = ice_vc_set_rss_hena,
 	.ena_vlan_stripping = ice_vc_ena_vlan_stripping,
 	.dis_vlan_stripping = ice_vc_dis_vlan_stripping,
 	.handle_rss_cfg_msg = ice_vc_handle_rss_cfg,
@@ -3764,6 +3950,15 @@ error_handler:
 	case VIRTCHNL_OP_DEL_VLAN:
 		err = ops->remove_vlan_msg(vf, msg);
 		break;
+	case VIRTCHNL_OP_GET_SUPPORTED_RXDIDS:
+		err = ops->query_rxdid(vf);
+		break;
+	case VIRTCHNL_OP_GET_RSS_HENA_CAPS:
+		err = ops->get_rss_hena(vf);
+		break;
+	case VIRTCHNL_OP_SET_RSS_HENA:
+		err = ops->set_rss_hena_msg(vf, msg);
+		break;
 	case VIRTCHNL_OP_ENABLE_VLAN_STRIPPING:
 		err = ops->ena_vlan_stripping(vf);
 		break;