Commit message: i40e: prevent memory leak in i40e_setup_macvlans

In i40e_setup_macvlans if i40e_setup_channel fails the allocated memory
for ch should be released.

Signed-off-by: Navid Emamdoost <navid.emamdoost@gmail.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
CVE: CVE-2019-19043
CWE: CWE-401
Vulnerability description: A memory leak in the i40e_setup_macvlans() function in drivers/net/ethernet/intel/i40e/i40e_main.c in the Linux kernel through 5.3.11 allows attackers to cause a denial of service (memory consumption) by triggering i40e_setup_channel() failures, aka CID-27d461333459.

Project: linux
File: i40e_main.c

static int i40e_set_features(struct net_device *netdev,
			     netdev_features_t features)
{
	struct i40e_netdev_priv *np = netdev_priv(netdev);
	struct i40e_vsi *vsi = np->vsi;
	struct i40e_pf *pf = vsi->back;
	bool need_reset;

	if (features & NETIF_F_RXHASH && !(netdev->features & NETIF_F_RXHASH))
		i40e_pf_config_rss(pf);
	else if (!(features & NETIF_F_RXHASH) &&
		 netdev->features & NETIF_F_RXHASH)
		i40e_clear_rss_lut(vsi);

	if (features & NETIF_F_HW_VLAN_CTAG_RX)
		i40e_vlan_stripping_enable(vsi);
	else
		i40e_vlan_stripping_disable(vsi);

	if (!(features & NETIF_F_HW_TC) && pf->num_cloud_filters) {
		dev_err(&pf->pdev->dev,
			"Offloaded tc filters active, can't turn hw_tc_offload off");
		return -EINVAL;
	}

	if (!(features & NETIF_F_HW_L2FW_DOFFLOAD) && vsi->macvlan_cnt)
		i40e_del_all_macvlans(vsi);

	need_reset = i40e_set_ntuple(pf, features);

	if (need_reset)
		i40e_do_reset(pf, I40E_PF_RESET_FLAG, true);

	return 0;
}

Project: linux
File: i40e_main.c

static void i40e_handle_mdd_event(struct i40e_pf *pf)
{
	struct i40e_hw *hw = &pf->hw;
	bool mdd_detected = false;
	struct i40e_vf *vf;
	u32 reg;
	int i;

	if (!test_bit(__I40E_MDD_EVENT_PENDING, pf->state))
		return;

	/* find what triggered the MDD event */
	reg = rd32(hw, I40E_GL_MDET_TX);
	if (reg & I40E_GL_MDET_TX_VALID_MASK) {
		u8 pf_num = (reg & I40E_GL_MDET_TX_PF_NUM_MASK) >>
				I40E_GL_MDET_TX_PF_NUM_SHIFT;
		u16 vf_num = (reg & I40E_GL_MDET_TX_VF_NUM_MASK) >>
				I40E_GL_MDET_TX_VF_NUM_SHIFT;
		u8 event = (reg & I40E_GL_MDET_TX_EVENT_MASK) >>
				I40E_GL_MDET_TX_EVENT_SHIFT;
		u16 queue = ((reg & I40E_GL_MDET_TX_QUEUE_MASK) >>
				I40E_GL_MDET_TX_QUEUE_SHIFT) -
				pf->hw.func_caps.base_queue;
		if (netif_msg_tx_err(pf))
			dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on TX queue %d PF number 0x%02x VF number 0x%02x\n",
				 event, queue, pf_num, vf_num);
		wr32(hw, I40E_GL_MDET_TX, 0xffffffff);
		mdd_detected = true;
	}
	reg = rd32(hw, I40E_GL_MDET_RX);
	if (reg & I40E_GL_MDET_RX_VALID_MASK) {
		u8 func = (reg & I40E_GL_MDET_RX_FUNCTION_MASK) >>
				I40E_GL_MDET_RX_FUNCTION_SHIFT;
		u8 event = (reg & I40E_GL_MDET_RX_EVENT_MASK) >>
				I40E_GL_MDET_RX_EVENT_SHIFT;
		u16 queue = ((reg & I40E_GL_MDET_RX_QUEUE_MASK) >>
				I40E_GL_MDET_RX_QUEUE_SHIFT) -
				pf->hw.func_caps.base_queue;
		if (netif_msg_rx_err(pf))
			dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on RX queue %d of function 0x%02x\n",
				 event, queue, func);
		wr32(hw, I40E_GL_MDET_RX, 0xffffffff);
		mdd_detected = true;
	}

	if (mdd_detected) {
		reg = rd32(hw, I40E_PF_MDET_TX);
		if (reg & I40E_PF_MDET_TX_VALID_MASK) {
			wr32(hw, I40E_PF_MDET_TX, 0xFFFF);
			dev_dbg(&pf->pdev->dev, "TX driver issue detected on PF\n");
		}
		reg = rd32(hw, I40E_PF_MDET_RX);
		if (reg & I40E_PF_MDET_RX_VALID_MASK) {
			wr32(hw, I40E_PF_MDET_RX, 0xFFFF);
			dev_dbg(&pf->pdev->dev, "RX driver issue detected on PF\n");
		}
	}

	/* see if one of the VFs needs its hand slapped */
	for (i = 0; i < pf->num_alloc_vfs && mdd_detected; i++) {
		vf = &(pf->vf[i]);
		reg = rd32(hw, I40E_VP_MDET_TX(i));
		if (reg & I40E_VP_MDET_TX_VALID_MASK) {
			wr32(hw, I40E_VP_MDET_TX(i), 0xFFFF);
			vf->num_mdd_events++;
			dev_info(&pf->pdev->dev, "TX driver issue detected on VF %d\n",
				 i);
			dev_info(&pf->pdev->dev,
				 "Use PF Control I/F to re-enable the VF\n");
			set_bit(I40E_VF_STATE_DISABLED, &vf->vf_states);
		}

		reg = rd32(hw, I40E_VP_MDET_RX(i));
		if (reg & I40E_VP_MDET_RX_VALID_MASK) {
			wr32(hw, I40E_VP_MDET_RX(i), 0xFFFF);
			vf->num_mdd_events++;
			dev_info(&pf->pdev->dev, "RX driver issue detected on VF %d\n",
				 i);
			dev_info(&pf->pdev->dev,
				 "Use PF Control I/F to re-enable the VF\n");
			set_bit(I40E_VF_STATE_DISABLED, &vf->vf_states);
		}
	}

	/* re-enable mdd interrupt cause */
	clear_bit(__I40E_MDD_EVENT_PENDING, pf->state);
	reg = rd32(hw, I40E_PFINT_ICR0_ENA);
	reg |=  I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
	wr32(hw, I40E_PFINT_ICR0_ENA, reg);
	i40e_flush(hw);
}

Project: linux
File: i40e_main.c

static void i40e_reset_interrupt_capability(struct i40e_pf *pf)
{
	/* If we're in Legacy mode, the interrupt was cleaned in vsi_close */
	if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
		pci_disable_msix(pf->pdev);
		kfree(pf->msix_entries);
		pf->msix_entries = NULL;
		kfree(pf->irq_pile);
		pf->irq_pile = NULL;
	} else if (pf->flags & I40E_FLAG_MSI_ENABLED) {
		pci_disable_msi(pf->pdev);
	}
	pf->flags &= ~(I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED);
}

Project: linux
File: i40e_main.c

int i40e_add_del_cloud_filter_big_buf(struct i40e_vsi *vsi,
				      struct i40e_cloud_filter *filter,
				      bool add)
{
	struct i40e_aqc_cloud_filters_element_bb cld_filter;
	struct i40e_pf *pf = vsi->back;
	int ret;

	/* Both (src/dst) valid mac_addr are not supported */
	if ((is_valid_ether_addr(filter->dst_mac) &&
	     is_valid_ether_addr(filter->src_mac)) ||
	    (is_multicast_ether_addr(filter->dst_mac) &&
	     is_multicast_ether_addr(filter->src_mac)))
		return -EOPNOTSUPP;

	/* Big buffer cloud filter needs 'L4 port' to be non-zero. Also, UDP
	 * ports are not supported via big buffer now.
	 */
	if (!filter->dst_port || filter->ip_proto == IPPROTO_UDP)
		return -EOPNOTSUPP;

	/* adding filter using src_port/src_ip is not supported at this stage */
	if (filter->src_port || filter->src_ipv4 ||
	    !ipv6_addr_any(&filter->ip.v6.src_ip6))
		return -EOPNOTSUPP;

	/* copy element needed to add cloud filter from filter */
	i40e_set_cld_element(filter, &cld_filter.element);

	if (is_valid_ether_addr(filter->dst_mac) ||
	    is_valid_ether_addr(filter->src_mac) ||
	    is_multicast_ether_addr(filter->dst_mac) ||
	    is_multicast_ether_addr(filter->src_mac)) {
		/* MAC + IP : unsupported mode */
		if (filter->dst_ipv4)
			return -EOPNOTSUPP;

		/* since we validated that L4 port must be valid before
		 * we get here, start with respective "flags" value
		 * and update if vlan is present or not
		 */
		cld_filter.element.flags =
			cpu_to_le16(I40E_AQC_ADD_CLOUD_FILTER_MAC_PORT);

		if (filter->vlan_id) {
			cld_filter.element.flags =
			cpu_to_le16(I40E_AQC_ADD_CLOUD_FILTER_MAC_VLAN_PORT);
		}

	} else if (filter->dst_ipv4 ||
		   !ipv6_addr_any(&filter->ip.v6.dst_ip6)) {
		cld_filter.element.flags =
				cpu_to_le16(I40E_AQC_ADD_CLOUD_FILTER_IP_PORT);
		if (filter->n_proto == ETH_P_IPV6)
			cld_filter.element.flags |=
				cpu_to_le16(I40E_AQC_ADD_CLOUD_FLAGS_IPV6);
		else
			cld_filter.element.flags |=
				cpu_to_le16(I40E_AQC_ADD_CLOUD_FLAGS_IPV4);
	} else {
		dev_err(&pf->pdev->dev,
			"either mac or ip has to be valid for cloud filter\n");
		return -EINVAL;
	}

	/* Now copy L4 port in Byte 6..7 in general fields */
	cld_filter.general_fields[I40E_AQC_ADD_CLOUD_FV_FLU_0X16_WORD0] =
						be16_to_cpu(filter->dst_port);

	if (add) {
		/* Validate current device switch mode, change if necessary */
		ret = i40e_validate_and_set_switch_mode(vsi);
		if (ret) {
			dev_err(&pf->pdev->dev,
				"failed to set switch mode, ret %d\n",
				ret);
			return ret;
		}

		ret = i40e_aq_add_cloud_filters_bb(&pf->hw, filter->seid,
						   &cld_filter, 1);
	} else {
		ret = i40e_aq_rem_cloud_filters_bb(&pf->hw, filter->seid,
						   &cld_filter, 1);
	}

	if (ret)
		dev_dbg(&pf->pdev->dev,
			"Failed to %s cloud filter(big buffer) err %d aq_err %d\n",
			add ? "add" : "delete", ret, pf->hw.aq.asq_last_status);
	else
		dev_info(&pf->pdev->dev,
			 "%s cloud filter for VSI: %d, L4 port: %d\n",
			 add ? "add" : "delete", filter->seid,
			 ntohs(filter->dst_port));
	return ret;
}

Project: linux
File: i40e_main.c

static void i40e_veb_clear(struct i40e_veb *veb)
{
	if (!veb)
		return;

	if (veb->pf) {
		struct i40e_pf *pf = veb->pf;

		mutex_lock(&pf->switch_mutex);
		if (pf->veb[veb->idx] == veb)
			pf->veb[veb->idx] = NULL;
		mutex_unlock(&pf->switch_mutex);
	}

	kfree(veb);
}

Project: linux
File: i40e_main.c

int i40e_fetch_switch_configuration(struct i40e_pf *pf, bool printconfig)
{
	struct i40e_aqc_get_switch_config_resp *sw_config;
	u16 next_seid = 0;
	int ret = 0;
	u8 *aq_buf;
	int i;

	aq_buf = kzalloc(I40E_AQ_LARGE_BUF, GFP_KERNEL);
	if (!aq_buf)
		return -ENOMEM;

	sw_config = (struct i40e_aqc_get_switch_config_resp *)aq_buf;
	do {
		u16 num_reported, num_total;

		ret = i40e_aq_get_switch_config(&pf->hw, sw_config,
						I40E_AQ_LARGE_BUF,
						&next_seid, NULL);
		if (ret) {
			dev_info(&pf->pdev->dev,
				 "get switch config failed err %s aq_err %s\n",
				 i40e_stat_str(&pf->hw, ret),
				 i40e_aq_str(&pf->hw,
					     pf->hw.aq.asq_last_status));
			kfree(aq_buf);
			return -ENOENT;
		}

		num_reported = le16_to_cpu(sw_config->header.num_reported);
		num_total = le16_to_cpu(sw_config->header.num_total);

		if (printconfig)
			dev_info(&pf->pdev->dev,
				 "header: %d reported %d total\n",
				 num_reported, num_total);

		for (i = 0; i < num_reported; i++) {
			struct i40e_aqc_switch_config_element_resp *ele =
				&sw_config->element[i];

			i40e_setup_pf_switch_element(pf, ele, num_reported,
						     printconfig);
		}
	} while (next_seid != 0);

	kfree(aq_buf);
	return ret;
}

Project: linux
File: i40e_main.c

static void i40e_vsi_clear_rings(struct i40e_vsi *vsi)
{
	int i;

	if (vsi->tx_rings && vsi->tx_rings[0]) {
		for (i = 0; i < vsi->alloc_queue_pairs; i++) {
			kfree_rcu(vsi->tx_rings[i], rcu);
			vsi->tx_rings[i] = NULL;
			vsi->rx_rings[i] = NULL;
			if (vsi->xdp_rings)
				vsi->xdp_rings[i] = NULL;
		}
	}
}

Project: linux
File: i40e_main.c

int i40e_free_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem)
{
	struct i40e_pf *pf = (struct i40e_pf *)hw->back;

	dma_free_coherent(&pf->pdev->dev, mem->size, mem->va, mem->pa);
	mem->va = NULL;
	mem->pa = 0;
	mem->size = 0;

	return 0;
}

Project: linux
File: i40e_main.c

static int i40e_reserve_msix_vectors(struct i40e_pf *pf, int vectors)
{
	vectors = pci_enable_msix_range(pf->pdev, pf->msix_entries,
					I40E_MIN_MSIX, vectors);
	if (vectors < 0) {
		dev_info(&pf->pdev->dev,
			 "MSI-X vector reservation failed: %d\n", vectors);
		vectors = 0;
	}

	return vectors;
}

Project: linux
File: i40e_main.c

static void i40e_enable_mc_magic_wake(struct i40e_pf *pf)
{
	struct i40e_hw *hw = &pf->hw;
	i40e_status ret;
	u8 mac_addr[6];
	u16 flags = 0;

	/* Get current MAC address in case it's an LAA */
	if (pf->vsi[pf->lan_vsi] && pf->vsi[pf->lan_vsi]->netdev) {
		ether_addr_copy(mac_addr,
				pf->vsi[pf->lan_vsi]->netdev->dev_addr);
	} else {
		dev_err(&pf->pdev->dev,
			"Failed to retrieve MAC address; using default\n");
		ether_addr_copy(mac_addr, hw->mac.addr);
	}

	/* The FW expects the mac address write cmd to first be called with
	 * one of these flags before calling it again with the multicast
	 * enable flags.
	 */
	flags = I40E_AQC_WRITE_TYPE_LAA_WOL;

	if (hw->func_caps.flex10_enable && hw->partition_id != 1)
		flags = I40E_AQC_WRITE_TYPE_LAA_ONLY;

	ret = i40e_aq_mac_address_write(hw, flags, mac_addr, NULL);
	if (ret) {
		dev_err(&pf->pdev->dev,
			"Failed to update MAC address registers; cannot enable Multicast Magic packet wake up");
		return;
	}

	flags = I40E_AQC_MC_MAG_EN
			| I40E_AQC_WOL_PRESERVE_ON_PFR
			| I40E_AQC_WRITE_TYPE_UPDATE_MC_MAG;
	ret = i40e_aq_mac_address_write(hw, flags, mac_addr, NULL);
	if (ret)
		dev_err(&pf->pdev->dev,
			"Failed to enable Multicast Magic Packet wake up\n");
}

Project: linux
File: i40e_main.c

void i40e_irq_dynamic_disable_icr0(struct i40e_pf *pf)
{
	struct i40e_hw *hw = &pf->hw;

	wr32(hw, I40E_PFINT_DYN_CTL0,
	     I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
	i40e_flush(hw);
}

Project: linux
File: i40e_main.c

static void i40e_clear_rss_lut(struct i40e_vsi *vsi)
{
	struct i40e_pf *pf = vsi->back;
	struct i40e_hw *hw = &pf->hw;
	u16 vf_id = vsi->vf_id;
	u8 i;

	if (vsi->type == I40E_VSI_MAIN) {
		for (i = 0; i <= I40E_PFQF_HLUT_MAX_INDEX; i++)
			wr32(hw, I40E_PFQF_HLUT(i), 0);
	} else if (vsi->type == I40E_VSI_SRIOV) {
		for (i = 0; i <= I40E_VFQF_HLUT_MAX_INDEX; i++)
			i40e_write_rx_ctl(hw, I40E_VFQF_HLUT1(i, vf_id), 0);
	} else {
		dev_err(&pf->pdev->dev, "Cannot set RSS LUT - invalid VSI type\n");
	}
}

Project: linux
File: i40e_main.c

static int i40e_vsi_reconfig_rss(struct i40e_vsi *vsi, u16 rss_size)
{
	struct i40e_pf *pf = vsi->back;
	u8 seed[I40E_HKEY_ARRAY_SIZE];
	struct i40e_hw *hw = &pf->hw;
	int local_rss_size;
	u8 *lut;
	int ret;

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

	if (rss_size > vsi->rss_size)
		return -EINVAL;

	local_rss_size = min_t(int, vsi->rss_size, rss_size);
	lut = kzalloc(vsi->rss_table_size, GFP_KERNEL);
	if (!lut)
		return -ENOMEM;

	/* Ignoring user configured lut if there is one */
	i40e_fill_rss_lut(pf, lut, vsi->rss_table_size, local_rss_size);

	/* Use user configured hash key if there is one, otherwise
	 * use default.
	 */
	if (vsi->rss_hkey_user)
		memcpy(seed, vsi->rss_hkey_user, I40E_HKEY_ARRAY_SIZE);
	else
		netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);

	ret = i40e_config_rss(vsi, seed, lut, vsi->rss_table_size);
	if (ret) {
		dev_info(&pf->pdev->dev,
			 "Cannot set RSS lut, err %s aq_err %s\n",
			 i40e_stat_str(hw, ret),
			 i40e_aq_str(hw, hw->aq.asq_last_status));
		kfree(lut);
		return ret;
	}
	kfree(lut);

	/* Do the update w.r.t. storing rss_size */
	if (!vsi->orig_rss_size)
		vsi->orig_rss_size = vsi->rss_size;
	vsi->current_rss_size = local_rss_size;

	return ret;
}

Project: linux
File: i40e_main.c

static void i40e_reenable_fdir_atr(struct i40e_pf *pf)
{
	if (test_and_clear_bit(__I40E_FD_ATR_AUTO_DISABLED, pf->state)) {
		/* ATR uses the same filtering logic as SB rules. It only
		 * functions properly if the input set mask is at the default
		 * settings. It is safe to restore the default input set
		 * because there are no active TCPv4 filter rules.
		 */
		i40e_write_fd_input_set(pf, I40E_FILTER_PCTYPE_NONF_IPV4_TCP,
					I40E_L3_SRC_MASK | I40E_L3_DST_MASK |
					I40E_L4_SRC_MASK | I40E_L4_DST_MASK);

		if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
		    (I40E_DEBUG_FD & pf->hw.debug_mask))
			dev_info(&pf->pdev->dev, "ATR is being enabled since we have space in the table and there are no conflicting ntuple rules\n");
	}
}

Project: linux
File: i40e_main.c

static void i40e_pci_error_reset_prepare(struct pci_dev *pdev)
{
	struct i40e_pf *pf = pci_get_drvdata(pdev);

	i40e_prep_for_reset(pf, false);
}

Project: linux
File: i40e_main.c

static int i40e_pf_wait_queues_disabled(struct i40e_pf *pf)
{
	int v, ret = 0;

	for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
		if (pf->vsi[v]) {
			ret = i40e_vsi_wait_queues_disabled(pf->vsi[v]);
			if (ret)
				break;
		}
	}

	return ret;
}

Project: linux
File: i40e_main.c

i40e_aqc_broadcast_filter(struct i40e_vsi *vsi, const char *vsi_name,
			  struct i40e_mac_filter *f)
{
	bool enable = f->state == I40E_FILTER_NEW;
	struct i40e_hw *hw = &vsi->back->hw;
	i40e_status aq_ret;

	if (f->vlan == I40E_VLAN_ANY) {
		aq_ret = i40e_aq_set_vsi_broadcast(hw,
						   vsi->seid,
						   enable,
						   NULL);
	} else {
		aq_ret = i40e_aq_set_vsi_bc_promisc_on_vlan(hw,
							    vsi->seid,
							    enable,
							    f->vlan,
							    NULL);
	}

	if (aq_ret) {
		set_bit(__I40E_VSI_OVERFLOW_PROMISC, vsi->state);
		dev_warn(&vsi->back->pdev->dev,
			 "Error %s, forcing overflow promiscuous on %s\n",
			 i40e_aq_str(hw, hw->aq.asq_last_status),
			 vsi_name);
	}

	return aq_ret;
}

Project: linux
File: i40e_main.c

static int i40e_handle_lldp_event(struct i40e_pf *pf,
				  struct i40e_arq_event_info *e)
{
	struct i40e_aqc_lldp_get_mib *mib =
		(struct i40e_aqc_lldp_get_mib *)&e->desc.params.raw;
	struct i40e_hw *hw = &pf->hw;
	struct i40e_dcbx_config tmp_dcbx_cfg;
	bool need_reconfig = false;
	int ret = 0;
	u8 type;

	/* Not DCB capable or capability disabled */
	if (!(pf->flags & I40E_FLAG_DCB_CAPABLE))
		return ret;

	/* Ignore if event is not for Nearest Bridge */
	type = ((mib->type >> I40E_AQ_LLDP_BRIDGE_TYPE_SHIFT)
		& I40E_AQ_LLDP_BRIDGE_TYPE_MASK);
	dev_dbg(&pf->pdev->dev, "LLDP event mib bridge type 0x%x\n", type);
	if (type != I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE)
		return ret;

	/* Check MIB Type and return if event for Remote MIB update */
	type = mib->type & I40E_AQ_LLDP_MIB_TYPE_MASK;
	dev_dbg(&pf->pdev->dev,
		"LLDP event mib type %s\n", type ? "remote" : "local");
	if (type == I40E_AQ_LLDP_MIB_REMOTE) {
		/* Update the remote cached instance and return */
		ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_REMOTE,
				I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE,
				&hw->remote_dcbx_config);
		goto exit;
	}

	/* Store the old configuration */
	tmp_dcbx_cfg = hw->local_dcbx_config;

	/* Reset the old DCBx configuration data */
	memset(&hw->local_dcbx_config, 0, sizeof(hw->local_dcbx_config));
	/* Get updated DCBX data from firmware */
	ret = i40e_get_dcb_config(&pf->hw);
	if (ret) {
		dev_info(&pf->pdev->dev,
			 "Failed querying DCB configuration data from firmware, err %s aq_err %s\n",
			 i40e_stat_str(&pf->hw, ret),
			 i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
		goto exit;
	}

	/* No change detected in DCBX configs */
	if (!memcmp(&tmp_dcbx_cfg, &hw->local_dcbx_config,
		    sizeof(tmp_dcbx_cfg))) {
		dev_dbg(&pf->pdev->dev, "No change detected in DCBX configuration.\n");
		goto exit;
	}

	need_reconfig = i40e_dcb_need_reconfig(pf, &tmp_dcbx_cfg,
					       &hw->local_dcbx_config);

	i40e_dcbnl_flush_apps(pf, &tmp_dcbx_cfg, &hw->local_dcbx_config);

	if (!need_reconfig)
		goto exit;

	/* Enable DCB tagging only when more than one TC */
	if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
		pf->flags |= I40E_FLAG_DCB_ENABLED;
	else
		pf->flags &= ~I40E_FLAG_DCB_ENABLED;

	set_bit(__I40E_PORT_SUSPENDED, pf->state);
	/* Reconfiguration needed quiesce all VSIs */
	i40e_pf_quiesce_all_vsi(pf);

	/* Changes in configuration update VEB/VSI */
	i40e_dcb_reconfigure(pf);

	ret = i40e_resume_port_tx(pf);

	clear_bit(__I40E_PORT_SUSPENDED, pf->state);
	/* In case of error no point in resuming VSIs */
	if (ret)
		goto exit;

	/* Wait for the PF's queues to be disabled */
	ret = i40e_pf_wait_queues_disabled(pf);
	if (ret) {
		/* Schedule PF reset to recover */
		set_bit(__I40E_PF_RESET_REQUESTED, pf->state);
		i40e_service_event_schedule(pf);
	} else {
		i40e_pf_unquiesce_all_vsi(pf);
		set_bit(__I40E_CLIENT_SERVICE_REQUESTED, pf->state);
		set_bit(__I40E_CLIENT_L2_CHANGE, pf->state);
	}

exit:
	return ret;
}

Project: linux
File: i40e_main.c

static void i40e_vsi_link_event(struct i40e_vsi *vsi, bool link_up)
{
	if (!vsi || test_bit(__I40E_VSI_DOWN, vsi->state))
		return;

	switch (vsi->type) {
	case I40E_VSI_MAIN:
		if (!vsi->netdev || !vsi->netdev_registered)
			break;

		if (link_up) {
			netif_carrier_on(vsi->netdev);
			netif_tx_wake_all_queues(vsi->netdev);
		} else {
			netif_carrier_off(vsi->netdev);
			netif_tx_stop_all_queues(vsi->netdev);
		}
		break;

	case I40E_VSI_SRIOV:
	case I40E_VSI_VMDQ2:
	case I40E_VSI_CTRL:
	case I40E_VSI_IWARP:
	case I40E_VSI_MIRROR:
	default:
		/* there is no notification for other VSIs */
		break;
	}
}

Project: linux
File: i40e_main.c

static void __exit i40e_exit_module(void)
{
	pci_unregister_driver(&i40e_driver);
	destroy_workqueue(i40e_wq);
	i40e_dbg_exit();
}

Project: linux
File: i40e_main.c

static pci_ers_result_t i40e_pci_error_detected(struct pci_dev *pdev,
						enum pci_channel_state error)
{
	struct i40e_pf *pf = pci_get_drvdata(pdev);

	dev_info(&pdev->dev, "%s: error %d\n", __func__, error);

	if (!pf) {
		dev_info(&pdev->dev,
			 "Cannot recover - error happened during device probe\n");
		return PCI_ERS_RESULT_DISCONNECT;
	}

	/* shutdown all operations */
	if (!test_bit(__I40E_SUSPENDED, pf->state))
		i40e_prep_for_reset(pf, false);

	/* Request a slot reset */
	return PCI_ERS_RESULT_NEED_RESET;
}

Project: linux
File: i40e_main.c

static i40e_status i40e_del_macvlan_filter(struct i40e_hw *hw, u16 seid,
					   const u8 *macaddr, int *aq_err)
{
	struct i40e_aqc_remove_macvlan_element_data element;
	i40e_status status;

	memset(&element, 0, sizeof(element));
	ether_addr_copy(element.mac_addr, macaddr);
	element.vlan_tag = 0;
	element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
	status = i40e_aq_remove_macvlan(hw, seid, &element, 1, NULL);
	*aq_err = hw->aq.asq_last_status;

	return status;
}

Project: linux
File: i40e_main.c

static void i40e_fdir_sb_setup(struct i40e_pf *pf)
{
	struct i40e_vsi *vsi;

	/* quick workaround for an NVM issue that leaves a critical register
	 * uninitialized
	 */
	if (!rd32(&pf->hw, I40E_GLQF_HKEY(0))) {
		static const u32 hkey[] = {
			0xe640d33f, 0xcdfe98ab, 0x73fa7161, 0x0d7a7d36,
			0xeacb7d61, 0xaa4f05b6, 0x9c5c89ed, 0xfc425ddb,
			0xa4654832, 0xfc7461d4, 0x8f827619, 0xf5c63c21,
			0x95b3a76d};
		int i;

		for (i = 0; i <= I40E_GLQF_HKEY_MAX_INDEX; i++)
			wr32(&pf->hw, I40E_GLQF_HKEY(i), hkey[i]);
	}

	if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
		return;

	/* find existing VSI and see if it needs configuring */
	vsi = i40e_find_vsi_by_type(pf, I40E_VSI_FDIR);

	/* create a new VSI if none exists */
	if (!vsi) {
		vsi = i40e_vsi_setup(pf, I40E_VSI_FDIR,
				     pf->vsi[pf->lan_vsi]->seid, 0);
		if (!vsi) {
			dev_info(&pf->pdev->dev, "Couldn't create FDir VSI\n");
			pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
			pf->flags |= I40E_FLAG_FD_SB_INACTIVE;
			return;
		}
	}

	i40e_vsi_setup_irqhandler(vsi, i40e_fdir_clean_ring);
}

Project: linux
File: i40e_main.c

static int i40e_vsi_config_tc(struct i40e_vsi *vsi, u8 enabled_tc)
{
	u8 bw_share[I40E_MAX_TRAFFIC_CLASS] = {0};
	struct i40e_pf *pf = vsi->back;
	struct i40e_hw *hw = &pf->hw;
	struct i40e_vsi_context ctxt;
	int ret = 0;
	int i;

	/* Check if enabled_tc is same as existing or new TCs */
	if (vsi->tc_config.enabled_tc == enabled_tc &&
	    vsi->mqprio_qopt.mode != TC_MQPRIO_MODE_CHANNEL)
		return ret;

	/* Enable ETS TCs with equal BW Share for now across all VSIs */
	for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
		if (enabled_tc & BIT(i))
			bw_share[i] = 1;
	}

	ret = i40e_vsi_configure_bw_alloc(vsi, enabled_tc, bw_share);
	if (ret) {
		struct i40e_aqc_query_vsi_bw_config_resp bw_config = {0};

		dev_info(&pf->pdev->dev,
			 "Failed configuring TC map %d for VSI %d\n",
			 enabled_tc, vsi->seid);
		ret = i40e_aq_query_vsi_bw_config(hw, vsi->seid,
						  &bw_config, NULL);
		if (ret) {
			dev_info(&pf->pdev->dev,
				 "Failed querying vsi bw info, err %s aq_err %s\n",
				 i40e_stat_str(hw, ret),
				 i40e_aq_str(hw, hw->aq.asq_last_status));
			goto out;
		}
		if ((bw_config.tc_valid_bits & enabled_tc) != enabled_tc) {
			u8 valid_tc = bw_config.tc_valid_bits & enabled_tc;

			if (!valid_tc)
				valid_tc = bw_config.tc_valid_bits;
			/* Always enable TC0, no matter what */
			valid_tc |= 1;
			dev_info(&pf->pdev->dev,
				 "Requested tc 0x%x, but FW reports 0x%x as valid. Attempting to use 0x%x.\n",
				 enabled_tc, bw_config.tc_valid_bits, valid_tc);
			enabled_tc = valid_tc;
		}

		ret = i40e_vsi_configure_bw_alloc(vsi, enabled_tc, bw_share);
		if (ret) {
			dev_err(&pf->pdev->dev,
				"Unable to  configure TC map %d for VSI %d\n",
				enabled_tc, vsi->seid);
			goto out;
		}
	}

	/* Update Queue Pairs Mapping for currently enabled UPs */
	ctxt.seid = vsi->seid;
	ctxt.pf_num = vsi->back->hw.pf_id;
	ctxt.vf_num = 0;
	ctxt.uplink_seid = vsi->uplink_seid;
	ctxt.info = vsi->info;
	if (vsi->back->flags & I40E_FLAG_TC_MQPRIO) {
		ret = i40e_vsi_setup_queue_map_mqprio(vsi, &ctxt, enabled_tc);
		if (ret)
			goto out;
	} else {
		i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
	}

	/* On destroying the qdisc, reset vsi->rss_size, as number of enabled
	 * queues changed.
	 */
	if (!vsi->mqprio_qopt.qopt.hw && vsi->reconfig_rss) {
		vsi->rss_size = min_t(int, vsi->back->alloc_rss_size,
				      vsi->num_queue_pairs);
		ret = i40e_vsi_config_rss(vsi);
		if (ret) {
			dev_info(&vsi->back->pdev->dev,
				 "Failed to reconfig rss for num_queues\n");
			return ret;
		}
		vsi->reconfig_rss = false;
	}
	if (vsi->back->flags & I40E_FLAG_IWARP_ENABLED) {
		ctxt.info.valid_sections |=
				cpu_to_le16(I40E_AQ_VSI_PROP_QUEUE_OPT_VALID);
		ctxt.info.queueing_opt_flags |= I40E_AQ_VSI_QUE_OPT_TCP_ENA;
	}

	/* Update the VSI after updating the VSI queue-mapping
	 * information
	 */
	ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
	if (ret) {
		dev_info(&pf->pdev->dev,
			 "Update vsi tc config failed, err %s aq_err %s\n",
			 i40e_stat_str(hw, ret),
			 i40e_aq_str(hw, hw->aq.asq_last_status));
		goto out;
	}
	/* update the local VSI info with updated queue map */
	i40e_vsi_update_queue_map(vsi, &ctxt);
	vsi->info.valid_sections = 0;

	/* Update current VSI BW information */
	ret = i40e_vsi_get_bw_info(vsi);
	if (ret) {
		dev_info(&pf->pdev->dev,
			 "Failed updating vsi bw info, err %s aq_err %s\n",
			 i40e_stat_str(hw, ret),
			 i40e_aq_str(hw, hw->aq.asq_last_status));
		goto out;
	}

	/* Update the netdev TC setup */
	i40e_vsi_config_netdev_tc(vsi, enabled_tc);
out:
	return ret;
}

Project: linux
File: i40e_main.c

static int i40e_vsi_setup_vectors(struct i40e_vsi *vsi)
{
	int ret = -ENOENT;
	struct i40e_pf *pf = vsi->back;

	if (vsi->q_vectors[0]) {
		dev_info(&pf->pdev->dev, "VSI %d has existing q_vectors\n",
			 vsi->seid);
		return -EEXIST;
	}

	if (vsi->base_vector) {
		dev_info(&pf->pdev->dev, "VSI %d has non-zero base vector %d\n",
			 vsi->seid, vsi->base_vector);
		return -EEXIST;
	}

	ret = i40e_vsi_alloc_q_vectors(vsi);
	if (ret) {
		dev_info(&pf->pdev->dev,
			 "failed to allocate %d q_vector for VSI %d, ret=%d\n",
			 vsi->num_q_vectors, vsi->seid, ret);
		vsi->num_q_vectors = 0;
		goto vector_setup_out;
	}

	/* In Legacy mode, we do not have to get any other vector since we
	 * piggyback on the misc/ICR0 for queue interrupts.
	*/
	if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
		return ret;
	if (vsi->num_q_vectors)
		vsi->base_vector = i40e_get_lump(pf, pf->irq_pile,
						 vsi->num_q_vectors, vsi->idx);
	if (vsi->base_vector < 0) {
		dev_info(&pf->pdev->dev,
			 "failed to get tracking for %d vectors for VSI %d, err=%d\n",
			 vsi->num_q_vectors, vsi->seid, vsi->base_vector);
		i40e_vsi_free_q_vectors(vsi);
		ret = -ENOENT;
		goto vector_setup_out;
	}

vector_setup_out:
	return ret;
}

Project: linux
File: i40e_main.c

void i40e_veb_release(struct i40e_veb *veb)
{
	struct i40e_vsi *vsi = NULL;
	struct i40e_pf *pf;
	int i, n = 0;

	pf = veb->pf;

	/* find the remaining VSI and check for extras */
	for (i = 0; i < pf->num_alloc_vsi; i++) {
		if (pf->vsi[i] && pf->vsi[i]->uplink_seid == veb->seid) {
			n++;
			vsi = pf->vsi[i];
		}
	}
	if (n != 1) {
		dev_info(&pf->pdev->dev,
			 "can't remove VEB %d with %d VSIs left\n",
			 veb->seid, n);
		return;
	}

	/* move the remaining VSI to uplink veb */
	vsi->flags &= ~I40E_VSI_FLAG_VEB_OWNER;
	if (veb->uplink_seid) {
		vsi->uplink_seid = veb->uplink_seid;
		if (veb->uplink_seid == pf->mac_seid)
			vsi->veb_idx = I40E_NO_VEB;
		else
			vsi->veb_idx = veb->veb_idx;
	} else {
		/* floating VEB */
		vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
		vsi->veb_idx = pf->vsi[pf->lan_vsi]->veb_idx;
	}

	i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
	i40e_veb_clear(veb);
}

Project: linux
File: i40e_main.c

static u8 i40e_dcb_get_enabled_tc(struct i40e_dcbx_config *dcbcfg)
{
	u8 num_tc = i40e_dcb_get_num_tc(dcbcfg);
	u8 enabled_tc = 1;
	u8 i;

	for (i = 0; i < num_tc; i++)
		enabled_tc |= BIT(i);

	return enabled_tc;
}

Project: linux
File: i40e_main.c

void i40e_service_event_schedule(struct i40e_pf *pf)
{
	if ((!test_bit(__I40E_DOWN, pf->state) &&
	     !test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state)) ||
	      test_bit(__I40E_RECOVERY_MODE, pf->state))
		queue_work(i40e_wq, &pf->service_task);
}

Project: linux
File: i40e_main.c

static void i40e_pci_error_resume(struct pci_dev *pdev)
{
	struct i40e_pf *pf = pci_get_drvdata(pdev);

	dev_dbg(&pdev->dev, "%s\n", __func__);
	if (test_bit(__I40E_SUSPENDED, pf->state))
		return;

	i40e_handle_reset_warning(pf, false);
}

Project: linux
File: i40e_main.c

static void i40e_free_misc_vector(struct i40e_pf *pf)
{
	/* Disable ICR 0 */
	wr32(&pf->hw, I40E_PFINT_ICR0_ENA, 0);
	i40e_flush(&pf->hw);

	if (pf->flags & I40E_FLAG_MSIX_ENABLED && pf->msix_entries) {
		synchronize_irq(pf->msix_entries[0].vector);
		free_irq(pf->msix_entries[0].vector, pf);
		clear_bit(__I40E_MISC_IRQ_REQUESTED, pf->state);
	}
}

Project: linux
File: i40e_main.c

void i40e_vsi_stop_rings_no_wait(struct i40e_vsi *vsi)
{
	struct i40e_pf *pf = vsi->back;
	int i, pf_q;

	pf_q = vsi->base_queue;
	for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
		i40e_control_tx_q(pf, pf_q, false);
		i40e_control_rx_q(pf, pf_q, false);
	}
}

Project: linux
File: i40e_main.c

static inline int i40e_setup_hw_channel(struct i40e_pf *pf,
					struct i40e_vsi *vsi,
					struct i40e_channel *ch,
					u16 uplink_seid, u8 type)
{
	int ret;

	ch->initialized = false;
	ch->base_queue = vsi->next_base_queue;
	ch->type = type;

	/* Proceed with creation of channel (VMDq2) VSI */
	ret = i40e_add_channel(pf, uplink_seid, ch);
	if (ret) {
		dev_info(&pf->pdev->dev,
			 "failed to add_channel using uplink_seid %u\n",
			 uplink_seid);
		return ret;
	}

	/* Mark the successful creation of channel */
	ch->initialized = true;

	/* Reconfigure TX queues using QTX_CTL register */
	ret = i40e_channel_config_tx_ring(pf, vsi, ch);
	if (ret) {
		dev_info(&pf->pdev->dev,
			 "failed to configure TX rings for channel %u\n",
			 ch->seid);
		return ret;
	}

	/* update 'next_base_queue' */
	vsi->next_base_queue = vsi->next_base_queue + ch->num_queue_pairs;
	dev_dbg(&pf->pdev->dev,
		"Added channel: vsi_seid %u, vsi_number %u, stat_counter_idx %u, num_queue_pairs %u, pf->next_base_queue %d\n",
		ch->seid, ch->vsi_number, ch->stat_counter_idx,
		ch->num_queue_pairs,
		vsi->next_base_queue);
	return ret;
}

Project: linux
File: i40e_main.c

static void i40e_reset_ch_rings(struct i40e_vsi *vsi, struct i40e_channel *ch)
{
	struct i40e_ring *tx_ring, *rx_ring;
	u16 pf_q;
	int i;

	for (i = 0; i < ch->num_queue_pairs; i++) {
		pf_q = ch->base_queue + i;
		tx_ring = vsi->tx_rings[pf_q];
		tx_ring->ch = NULL;
		rx_ring = vsi->rx_rings[pf_q];
		rx_ring->ch = NULL;
	}
}

Project: linux
File: i40e_main.c

int i40e_is_vsi_uplink_mode_veb(struct i40e_vsi *vsi)
{
	struct i40e_veb *veb;
	struct i40e_pf *pf = vsi->back;

	/* Uplink is not a bridge so default to VEB */
	if (vsi->veb_idx >= I40E_MAX_VEB)
		return 1;

	veb = pf->veb[vsi->veb_idx];
	if (!veb) {
		dev_info(&pf->pdev->dev,
			 "There is no veb associated with the bridge\n");
		return -ENOENT;
	}

	/* Uplink is a bridge in VEPA mode */
	if (veb->bridge_mode & BRIDGE_MODE_VEPA) {
		return 0;
	} else {
		/* Uplink is a bridge in VEB mode */
		return 1;
	}

	/* VEPA is now default bridge, so return 0 */
	return 0;
}

Project: linux
File: i40e_main.c

static void i40e_irq_affinity_release(struct kref *ref) {}

Project: linux
File: i40e_main.c

static void i40e_queue_pair_clean_rings(struct i40e_vsi *vsi, int queue_pair)
{
	i40e_clean_tx_ring(vsi->tx_rings[queue_pair]);
	if (i40e_enabled_xdp_vsi(vsi)) {
		/* Make sure that in-progress ndo_xdp_xmit calls are
		 * completed.
		 */
		synchronize_rcu();
		i40e_clean_tx_ring(vsi->xdp_rings[queue_pair]);
	}
	i40e_clean_rx_ring(vsi->rx_rings[queue_pair]);
}

Project: linux
File: i40e_main.c

static bool i40e_clean_fdir_tx_irq(struct i40e_ring *tx_ring, int budget)
{
	struct i40e_vsi *vsi = tx_ring->vsi;
	u16 i = tx_ring->next_to_clean;
	struct i40e_tx_buffer *tx_buf;
	struct i40e_tx_desc *tx_desc;

	tx_buf = &tx_ring->tx_bi[i];
	tx_desc = I40E_TX_DESC(tx_ring, i);
	i -= tx_ring->count;

	do {
		struct i40e_tx_desc *eop_desc = tx_buf->next_to_watch;

		/* if next_to_watch is not set then there is no work pending */
		if (!eop_desc)
			break;

		/* prevent any other reads prior to eop_desc */
		smp_rmb();

		/* if the descriptor isn't done, no work yet to do */
		if (!(eop_desc->cmd_type_offset_bsz &
		      cpu_to_le64(I40E_TX_DESC_DTYPE_DESC_DONE)))
			break;

		/* clear next_to_watch to prevent false hangs */
		tx_buf->next_to_watch = NULL;

		tx_desc->buffer_addr = 0;
		tx_desc->cmd_type_offset_bsz = 0;
		/* move past filter desc */
		tx_buf++;
		tx_desc++;
		i++;
		if (unlikely(!i)) {
			i -= tx_ring->count;
			tx_buf = tx_ring->tx_bi;
			tx_desc = I40E_TX_DESC(tx_ring, 0);
		}
		/* unmap skb header data */
		dma_unmap_single(tx_ring->dev,
				 dma_unmap_addr(tx_buf, dma),
				 dma_unmap_len(tx_buf, len),
				 DMA_TO_DEVICE);
		if (tx_buf->tx_flags & I40E_TX_FLAGS_FD_SB)
			kfree(tx_buf->raw_buf);

		tx_buf->raw_buf = NULL;
		tx_buf->tx_flags = 0;
		tx_buf->next_to_watch = NULL;
		dma_unmap_len_set(tx_buf, len, 0);
		tx_desc->buffer_addr = 0;
		tx_desc->cmd_type_offset_bsz = 0;

		/* move us past the eop_desc for start of next FD desc */
		tx_buf++;
		tx_desc++;
		i++;
		if (unlikely(!i)) {
			i -= tx_ring->count;
			tx_buf = tx_ring->tx_bi;
			tx_desc = I40E_TX_DESC(tx_ring, 0);
		}

		/* update budget accounting */
		budget--;
	} while (likely(budget));

	i += tx_ring->count;
	tx_ring->next_to_clean = i;

	if (vsi->back->flags & I40E_FLAG_MSIX_ENABLED)
		i40e_irq_dynamic_enable(vsi, tx_ring->q_vector->v_idx);

	return budget > 0;
}

Project: linux
File: i40e_main.c

static void i40e_clean_adminq_subtask(struct i40e_pf *pf)
{
	struct i40e_arq_event_info event;
	struct i40e_hw *hw = &pf->hw;
	u16 pending, i = 0;
	i40e_status ret;
	u16 opcode;
	u32 oldval;
	u32 val;

	/* Do not run clean AQ when PF reset fails */
	if (test_bit(__I40E_RESET_FAILED, pf->state))
		return;

	/* check for error indications */
	val = rd32(&pf->hw, pf->hw.aq.arq.len);
	oldval = val;
	if (val & I40E_PF_ARQLEN_ARQVFE_MASK) {
		if (hw->debug_mask & I40E_DEBUG_AQ)
			dev_info(&pf->pdev->dev, "ARQ VF Error detected\n");
		val &= ~I40E_PF_ARQLEN_ARQVFE_MASK;
	}
	if (val & I40E_PF_ARQLEN_ARQOVFL_MASK) {
		if (hw->debug_mask & I40E_DEBUG_AQ)
			dev_info(&pf->pdev->dev, "ARQ Overflow Error detected\n");
		val &= ~I40E_PF_ARQLEN_ARQOVFL_MASK;
		pf->arq_overflows++;
	}
	if (val & I40E_PF_ARQLEN_ARQCRIT_MASK) {
		if (hw->debug_mask & I40E_DEBUG_AQ)
			dev_info(&pf->pdev->dev, "ARQ Critical Error detected\n");
		val &= ~I40E_PF_ARQLEN_ARQCRIT_MASK;
	}
	if (oldval != val)
		wr32(&pf->hw, pf->hw.aq.arq.len, val);

	val = rd32(&pf->hw, pf->hw.aq.asq.len);
	oldval = val;
	if (val & I40E_PF_ATQLEN_ATQVFE_MASK) {
		if (pf->hw.debug_mask & I40E_DEBUG_AQ)
			dev_info(&pf->pdev->dev, "ASQ VF Error detected\n");
		val &= ~I40E_PF_ATQLEN_ATQVFE_MASK;
	}
	if (val & I40E_PF_ATQLEN_ATQOVFL_MASK) {
		if (pf->hw.debug_mask & I40E_DEBUG_AQ)
			dev_info(&pf->pdev->dev, "ASQ Overflow Error detected\n");
		val &= ~I40E_PF_ATQLEN_ATQOVFL_MASK;
	}
	if (val & I40E_PF_ATQLEN_ATQCRIT_MASK) {
		if (pf->hw.debug_mask & I40E_DEBUG_AQ)
			dev_info(&pf->pdev->dev, "ASQ Critical Error detected\n");
		val &= ~I40E_PF_ATQLEN_ATQCRIT_MASK;
	}
	if (oldval != val)
		wr32(&pf->hw, pf->hw.aq.asq.len, val);

	event.buf_len = I40E_MAX_AQ_BUF_SIZE;
	event.msg_buf = kzalloc(event.buf_len, GFP_KERNEL);
	if (!event.msg_buf)
		return;

	do {
		ret = i40e_clean_arq_element(hw, &event, &pending);
		if (ret == I40E_ERR_ADMIN_QUEUE_NO_WORK)
			break;
		else if (ret) {
			dev_info(&pf->pdev->dev, "ARQ event error %d\n", ret);
			break;
		}

		opcode = le16_to_cpu(event.desc.opcode);
		switch (opcode) {

		case i40e_aqc_opc_get_link_status:
			i40e_handle_link_event(pf, &event);
			break;
		case i40e_aqc_opc_send_msg_to_pf:
			ret = i40e_vc_process_vf_msg(pf,
					le16_to_cpu(event.desc.retval),
					le32_to_cpu(event.desc.cookie_high),
					le32_to_cpu(event.desc.cookie_low),
					event.msg_buf,
					event.msg_len);
			break;
		case i40e_aqc_opc_lldp_update_mib:
			dev_dbg(&pf->pdev->dev, "ARQ: Update LLDP MIB event received\n");
#ifdef CONFIG_I40E_DCB
			rtnl_lock();
			ret = i40e_handle_lldp_event(pf, &event);
			rtnl_unlock();
#endif /* CONFIG_I40E_DCB */
			break;
		case i40e_aqc_opc_event_lan_overflow:
			dev_dbg(&pf->pdev->dev, "ARQ LAN queue overflow event received\n");
			i40e_handle_lan_overflow_event(pf, &event);
			break;
		case i40e_aqc_opc_send_msg_to_peer:
			dev_info(&pf->pdev->dev, "ARQ: Msg from other pf\n");
			break;
		case i40e_aqc_opc_nvm_erase:
		case i40e_aqc_opc_nvm_update:
		case i40e_aqc_opc_oem_post_update:
			i40e_debug(&pf->hw, I40E_DEBUG_NVM,
				   "ARQ NVM operation 0x%04x completed\n",
				   opcode);
			break;
		default:
			dev_info(&pf->pdev->dev,
				 "ARQ: Unknown event 0x%04x ignored\n",
				 opcode);
			break;
		}
	} while (i++ < pf->adminq_work_limit);

	if (i < pf->adminq_work_limit)
		clear_bit(__I40E_ADMINQ_EVENT_PENDING, pf->state);

	/* re-enable Admin queue interrupt cause */
	val = rd32(hw, I40E_PFINT_ICR0_ENA);
	val |=  I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
	wr32(hw, I40E_PFINT_ICR0_ENA, val);
	i40e_flush(hw);

	kfree(event.msg_buf);
}

Project: linux
File: i40e_main.c

i40e_status i40e_commit_partition_bw_setting(struct i40e_pf *pf)
{
	/* Commit temporary BW setting to permanent NVM image */
	enum i40e_admin_queue_err last_aq_status;
	i40e_status ret;
	u16 nvm_word;

	if (pf->hw.partition_id != 1) {
		dev_info(&pf->pdev->dev,
			 "Commit BW only works on partition 1! This is partition %d",
			 pf->hw.partition_id);
		ret = I40E_NOT_SUPPORTED;
		goto bw_commit_out;
	}

	/* Acquire NVM for read access */
	ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_READ);
	last_aq_status = pf->hw.aq.asq_last_status;
	if (ret) {
		dev_info(&pf->pdev->dev,
			 "Cannot acquire NVM for read access, err %s aq_err %s\n",
			 i40e_stat_str(&pf->hw, ret),
			 i40e_aq_str(&pf->hw, last_aq_status));
		goto bw_commit_out;
	}

	/* Read word 0x10 of NVM - SW compatibility word 1 */
	ret = i40e_aq_read_nvm(&pf->hw,
			       I40E_SR_NVM_CONTROL_WORD,
			       0x10, sizeof(nvm_word), &nvm_word,
			       false, NULL);
	/* Save off last admin queue command status before releasing
	 * the NVM
	 */
	last_aq_status = pf->hw.aq.asq_last_status;
	i40e_release_nvm(&pf->hw);
	if (ret) {
		dev_info(&pf->pdev->dev, "NVM read error, err %s aq_err %s\n",
			 i40e_stat_str(&pf->hw, ret),
			 i40e_aq_str(&pf->hw, last_aq_status));
		goto bw_commit_out;
	}

	/* Wait a bit for NVM release to complete */
	msleep(50);

	/* Acquire NVM for write access */
	ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_WRITE);
	last_aq_status = pf->hw.aq.asq_last_status;
	if (ret) {
		dev_info(&pf->pdev->dev,
			 "Cannot acquire NVM for write access, err %s aq_err %s\n",
			 i40e_stat_str(&pf->hw, ret),
			 i40e_aq_str(&pf->hw, last_aq_status));
		goto bw_commit_out;
	}
	/* Write it back out unchanged to initiate update NVM,
	 * which will force a write of the shadow (alt) RAM to
	 * the NVM - thus storing the bandwidth values permanently.
	 */
	ret = i40e_aq_update_nvm(&pf->hw,
				 I40E_SR_NVM_CONTROL_WORD,
				 0x10, sizeof(nvm_word),
				 &nvm_word, true, 0, NULL);
	/* Save off last admin queue command status before releasing
	 * the NVM
	 */
	last_aq_status = pf->hw.aq.asq_last_status;
	i40e_release_nvm(&pf->hw);
	if (ret)
		dev_info(&pf->pdev->dev,
			 "BW settings NOT SAVED, err %s aq_err %s\n",
			 i40e_stat_str(&pf->hw, ret),
			 i40e_aq_str(&pf->hw, last_aq_status));
bw_commit_out:

	return ret;
}

Project: linux
File: i40e_main.c

static int i40e_config_netdev(struct i40e_vsi *vsi)
{
	struct i40e_pf *pf = vsi->back;
	struct i40e_hw *hw = &pf->hw;
	struct i40e_netdev_priv *np;
	struct net_device *netdev;
	u8 broadcast[ETH_ALEN];
	u8 mac_addr[ETH_ALEN];
	int etherdev_size;
	netdev_features_t hw_enc_features;
	netdev_features_t hw_features;

	etherdev_size = sizeof(struct i40e_netdev_priv);
	netdev = alloc_etherdev_mq(etherdev_size, vsi->alloc_queue_pairs);
	if (!netdev)
		return -ENOMEM;

	vsi->netdev = netdev;
	np = netdev_priv(netdev);
	np->vsi = vsi;

	hw_enc_features = NETIF_F_SG			|
			  NETIF_F_IP_CSUM		|
			  NETIF_F_IPV6_CSUM		|
			  NETIF_F_HIGHDMA		|
			  NETIF_F_SOFT_FEATURES		|
			  NETIF_F_TSO			|
			  NETIF_F_TSO_ECN		|
			  NETIF_F_TSO6			|
			  NETIF_F_GSO_GRE		|
			  NETIF_F_GSO_GRE_CSUM		|
			  NETIF_F_GSO_PARTIAL		|
			  NETIF_F_GSO_IPXIP4		|
			  NETIF_F_GSO_IPXIP6		|
			  NETIF_F_GSO_UDP_TUNNEL	|
			  NETIF_F_GSO_UDP_TUNNEL_CSUM	|
			  NETIF_F_SCTP_CRC		|
			  NETIF_F_RXHASH		|
			  NETIF_F_RXCSUM		|
			  0;

	if (!(pf->hw_features & I40E_HW_OUTER_UDP_CSUM_CAPABLE))
		netdev->gso_partial_features |= NETIF_F_GSO_UDP_TUNNEL_CSUM;

	netdev->gso_partial_features |= NETIF_F_GSO_GRE_CSUM;

	netdev->hw_enc_features |= hw_enc_features;

	/* record features VLANs can make use of */
	netdev->vlan_features |= hw_enc_features | NETIF_F_TSO_MANGLEID;

	/* enable macvlan offloads */
	netdev->hw_features |= NETIF_F_HW_L2FW_DOFFLOAD;

	hw_features = hw_enc_features		|
		      NETIF_F_HW_VLAN_CTAG_TX	|
		      NETIF_F_HW_VLAN_CTAG_RX;

	if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
		hw_features |= NETIF_F_NTUPLE | NETIF_F_HW_TC;

	netdev->hw_features |= hw_features;

	netdev->features |= hw_features | NETIF_F_HW_VLAN_CTAG_FILTER;
	netdev->hw_enc_features |= NETIF_F_TSO_MANGLEID;

	if (vsi->type == I40E_VSI_MAIN) {
		SET_NETDEV_DEV(netdev, &pf->pdev->dev);
		ether_addr_copy(mac_addr, hw->mac.perm_addr);
		/* The following steps are necessary for two reasons. First,
		 * some older NVM configurations load a default MAC-VLAN
		 * filter that will accept any tagged packet, and we want to
		 * replace this with a normal filter. Additionally, it is
		 * possible our MAC address was provided by the platform using
		 * Open Firmware or similar.
		 *
		 * Thus, we need to remove the default filter and install one
		 * specific to the MAC address.
		 */
		i40e_rm_default_mac_filter(vsi, mac_addr);
		spin_lock_bh(&vsi->mac_filter_hash_lock);
		i40e_add_mac_filter(vsi, mac_addr);
		spin_unlock_bh(&vsi->mac_filter_hash_lock);
	} else {
		/* Relate the VSI_VMDQ name to the VSI_MAIN name. Note that we
		 * are still limited by IFNAMSIZ, but we're adding 'v%d\0' to
		 * the end, which is 4 bytes long, so force truncation of the
		 * original name by IFNAMSIZ - 4
		 */
		snprintf(netdev->name, IFNAMSIZ, "%.*sv%%d",
			 IFNAMSIZ - 4,
			 pf->vsi[pf->lan_vsi]->netdev->name);
		eth_random_addr(mac_addr);

		spin_lock_bh(&vsi->mac_filter_hash_lock);
		i40e_add_mac_filter(vsi, mac_addr);
		spin_unlock_bh(&vsi->mac_filter_hash_lock);
	}

	/* Add the broadcast filter so that we initially will receive
	 * broadcast packets. Note that when a new VLAN is first added the
	 * driver will convert all filters marked I40E_VLAN_ANY into VLAN
	 * specific filters as part of transitioning into "vlan" operation.
	 * When more VLANs are added, the driver will copy each existing MAC
	 * filter and add it for the new VLAN.
	 *
	 * Broadcast filters are handled specially by
	 * i40e_sync_filters_subtask, as the driver must to set the broadcast
	 * promiscuous bit instead of adding this directly as a MAC/VLAN
	 * filter. The subtask will update the correct broadcast promiscuous
	 * bits as VLANs become active or inactive.
	 */
	eth_broadcast_addr(broadcast);
	spin_lock_bh(&vsi->mac_filter_hash_lock);
	i40e_add_mac_filter(vsi, broadcast);
	spin_unlock_bh(&vsi->mac_filter_hash_lock);

	ether_addr_copy(netdev->dev_addr, mac_addr);
	ether_addr_copy(netdev->perm_addr, mac_addr);

	/* i40iw_net_event() reads 16 bytes from neigh->primary_key */
	netdev->neigh_priv_len = sizeof(u32) * 4;

	netdev->priv_flags |= IFF_UNICAST_FLT;
	netdev->priv_flags |= IFF_SUPP_NOFCS;
	/* Setup netdev TC information */
	i40e_vsi_config_netdev_tc(vsi, vsi->tc_config.enabled_tc);

	netdev->netdev_ops = &i40e_netdev_ops;
	netdev->watchdog_timeo = 5 * HZ;
	i40e_set_ethtool_ops(netdev);

	/* MTU range: 68 - 9706 */
	netdev->min_mtu = ETH_MIN_MTU;
	netdev->max_mtu = I40E_MAX_RXBUFFER - I40E_PACKET_HDR_PAD;

	return 0;
}

Project: linux
File: i40e_main.c

static void i40e_vsi_disable_irq(struct i40e_vsi *vsi)
{
	struct i40e_pf *pf = vsi->back;
	struct i40e_hw *hw = &pf->hw;
	int base = vsi->base_vector;
	int i;

	/* disable interrupt causation from each queue */
	for (i = 0; i < vsi->num_queue_pairs; i++) {
		u32 val;

		val = rd32(hw, I40E_QINT_TQCTL(vsi->tx_rings[i]->reg_idx));
		val &= ~I40E_QINT_TQCTL_CAUSE_ENA_MASK;
		wr32(hw, I40E_QINT_TQCTL(vsi->tx_rings[i]->reg_idx), val);

		val = rd32(hw, I40E_QINT_RQCTL(vsi->rx_rings[i]->reg_idx));
		val &= ~I40E_QINT_RQCTL_CAUSE_ENA_MASK;
		wr32(hw, I40E_QINT_RQCTL(vsi->rx_rings[i]->reg_idx), val);

		if (!i40e_enabled_xdp_vsi(vsi))
			continue;
		wr32(hw, I40E_QINT_TQCTL(vsi->xdp_rings[i]->reg_idx), 0);
	}

	/* disable each interrupt */
	if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
		for (i = vsi->base_vector;
		     i < (vsi->num_q_vectors + vsi->base_vector); i++)
			wr32(hw, I40E_PFINT_DYN_CTLN(i - 1), 0);

		i40e_flush(hw);
		for (i = 0; i < vsi->num_q_vectors; i++)
			synchronize_irq(pf->msix_entries[i + base].vector);
	} else {
		/* Legacy and MSI mode - this stops all interrupt handling */
		wr32(hw, I40E_PFINT_ICR0_ENA, 0);
		wr32(hw, I40E_PFINT_DYN_CTL0, 0);
		i40e_flush(hw);
		synchronize_irq(pf->pdev->irq);
	}
}

Project: linux
File: i40e_main.c

int i40e_queue_pair_enable(struct i40e_vsi *vsi, int queue_pair)
{
	int err;

	err = i40e_configure_tx_ring(vsi->tx_rings[queue_pair]);
	if (err)
		return err;

	if (i40e_enabled_xdp_vsi(vsi)) {
		err = i40e_configure_tx_ring(vsi->xdp_rings[queue_pair]);
		if (err)
			return err;
	}

	err = i40e_configure_rx_ring(vsi->rx_rings[queue_pair]);
	if (err)
		return err;

	err = i40e_queue_pair_toggle_rings(vsi, queue_pair, true /* on */);
	i40e_queue_pair_toggle_napi(vsi, queue_pair, true /* on */);
	i40e_queue_pair_enable_irq(vsi, queue_pair);

	i40e_exit_busy_conf(vsi);

	return err;
}

Project: linux
File: i40e_main.c

struct i40e_mac_filter *i40e_add_mac_filter(struct i40e_vsi *vsi,
					    const u8 *macaddr)
{
	struct i40e_mac_filter *f, *add = NULL;
	struct hlist_node *h;
	int bkt;

	if (vsi->info.pvid)
		return i40e_add_filter(vsi, macaddr,
				       le16_to_cpu(vsi->info.pvid));

	if (!i40e_is_vsi_in_vlan(vsi))
		return i40e_add_filter(vsi, macaddr, I40E_VLAN_ANY);

	hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist) {
		if (f->state == I40E_FILTER_REMOVE)
			continue;
		add = i40e_add_filter(vsi, macaddr, f->vlan);
		if (!add)
			return NULL;
	}

	return add;
}

Project: linux
File: i40e_main.c

int i40e_vsi_add_vlan(struct i40e_vsi *vsi, u16 vid)
{
	int err;

	if (vsi->info.pvid)
		return -EINVAL;

	/* The network stack will attempt to add VID=0, with the intention to
	 * receive priority tagged packets with a VLAN of 0. Our HW receives
	 * these packets by default when configured to receive untagged
	 * packets, so we don't need to add a filter for this case.
	 * Additionally, HW interprets adding a VID=0 filter as meaning to
	 * receive *only* tagged traffic and stops receiving untagged traffic.
	 * Thus, we do not want to actually add a filter for VID=0
	 */
	if (!vid)
		return 0;

	/* Locked once because all functions invoked below iterates list*/
	spin_lock_bh(&vsi->mac_filter_hash_lock);
	err = i40e_add_vlan_all_mac(vsi, vid);
	spin_unlock_bh(&vsi->mac_filter_hash_lock);
	if (err)
		return err;

	/* schedule our worker thread which will take care of
	 * applying the new filter changes
	 */
	i40e_service_event_schedule(vsi->back);
	return 0;
}

Project: linux
File: i40e_main.c

static void i40e_config_xps_tx_ring(struct i40e_ring *ring)
{
	int cpu;

	if (!ring->q_vector || !ring->netdev || ring->ch)
		return;

	/* We only initialize XPS once, so as not to overwrite user settings */
	if (test_and_set_bit(__I40E_TX_XPS_INIT_DONE, ring->state))
		return;

	cpu = cpumask_local_spread(ring->q_vector->v_idx, -1);
	netif_set_xps_queue(ring->netdev, get_cpu_mask(cpu),
			    ring->queue_index);
}

Project: linux
File: i40e_main.c

static int i40e_addr_sync(struct net_device *netdev, const u8 *addr)
{
	struct i40e_netdev_priv *np = netdev_priv(netdev);
	struct i40e_vsi *vsi = np->vsi;

	if (i40e_add_mac_filter(vsi, addr))
		return 0;
	else
		return -ENOMEM;
}

Project: linux
File: i40e_main.c

static int i40e_vsi_setup_rx_resources(struct i40e_vsi *vsi)
{
	int i, err = 0;

	for (i = 0; i < vsi->num_queue_pairs && !err; i++)
		err = i40e_setup_rx_descriptors(vsi->rx_rings[i]);
	return err;
}

Project: linux
File: i40e_main.c

void i40e_set_fec_in_flags(u8 fec_cfg, u32 *flags)
{
	if (fec_cfg & I40E_AQ_SET_FEC_AUTO)
		*flags |= I40E_FLAG_RS_FEC | I40E_FLAG_BASE_R_FEC;
	if ((fec_cfg & I40E_AQ_SET_FEC_REQUEST_RS) ||
	    (fec_cfg & I40E_AQ_SET_FEC_ABILITY_RS)) {
		*flags |= I40E_FLAG_RS_FEC;
		*flags &= ~I40E_FLAG_BASE_R_FEC;
	}
	if ((fec_cfg & I40E_AQ_SET_FEC_REQUEST_KR) ||
	    (fec_cfg & I40E_AQ_SET_FEC_ABILITY_KR)) {
		*flags |= I40E_FLAG_BASE_R_FEC;
		*flags &= ~I40E_FLAG_RS_FEC;
	}
	if (fec_cfg == 0)
		*flags &= ~(I40E_FLAG_RS_FEC | I40E_FLAG_BASE_R_FEC);
}

Project: linux
File: i40e_main.c

static void i40e_disable_pf_switch_lb(struct i40e_pf *pf)
{
	struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
	struct i40e_vsi_context ctxt;
	int ret;

	ctxt.seid = pf->main_vsi_seid;
	ctxt.pf_num = pf->hw.pf_id;
	ctxt.vf_num = 0;
	ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
	if (ret) {
		dev_info(&pf->pdev->dev,
			 "couldn't get PF vsi config, err %s aq_err %s\n",
			 i40e_stat_str(&pf->hw, ret),
			 i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
		return;
	}
	ctxt.flags = I40E_AQ_VSI_TYPE_PF;
	ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
	ctxt.info.switch_id &= ~cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);

	ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
	if (ret) {
		dev_info(&pf->pdev->dev,
			 "update vsi switch failed, err %s aq_err %s\n",
			 i40e_stat_str(&pf->hw, ret),
			 i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
	}
}

Project: linux
File: i40e_main.c

static int i40e_vsi_mem_alloc(struct i40e_pf *pf, enum i40e_vsi_type type)
{
	int ret = -ENODEV;
	struct i40e_vsi *vsi;
	int vsi_idx;
	int i;

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

	/* VSI list may be fragmented if VSI creation/destruction has
	 * been happening.  We can afford to do a quick scan to look
	 * for any free VSIs in the list.
	 *
	 * find next empty vsi slot, looping back around if necessary
	 */
	i = pf->next_vsi;
	while (i < pf->num_alloc_vsi && pf->vsi[i])
		i++;
	if (i >= pf->num_alloc_vsi) {
		i = 0;
		while (i < pf->next_vsi && pf->vsi[i])
			i++;
	}

	if (i < pf->num_alloc_vsi && !pf->vsi[i]) {
		vsi_idx = i;             /* Found one! */
	} else {
		ret = -ENODEV;
		goto unlock_pf;  /* out of VSI slots! */
	}
	pf->next_vsi = ++i;

	vsi = kzalloc(sizeof(*vsi), GFP_KERNEL);
	if (!vsi) {
		ret = -ENOMEM;
		goto unlock_pf;
	}
	vsi->type = type;
	vsi->back = pf;
	set_bit(__I40E_VSI_DOWN, vsi->state);
	vsi->flags = 0;
	vsi->idx = vsi_idx;
	vsi->int_rate_limit = 0;
	vsi->rss_table_size = (vsi->type == I40E_VSI_MAIN) ?
				pf->rss_table_size : 64;
	vsi->netdev_registered = false;
	vsi->work_limit = I40E_DEFAULT_IRQ_WORK;
	hash_init(vsi->mac_filter_hash);
	vsi->irqs_ready = false;

	if (type == I40E_VSI_MAIN) {
		vsi->af_xdp_zc_qps = bitmap_zalloc(pf->num_lan_qps, GFP_KERNEL);
		if (!vsi->af_xdp_zc_qps)
			goto err_rings;
	}

	ret = i40e_set_num_rings_in_vsi(vsi);
	if (ret)
		goto err_rings;

	ret = i40e_vsi_alloc_arrays(vsi, true);
	if (ret)
		goto err_rings;

	/* Setup default MSIX irq handler for VSI */
	i40e_vsi_setup_irqhandler(vsi, i40e_msix_clean_rings);

	/* Initialize VSI lock */
	spin_lock_init(&vsi->mac_filter_hash_lock);
	pf->vsi[vsi_idx] = vsi;
	ret = vsi_idx;
	goto unlock_pf;

err_rings:
	bitmap_free(vsi->af_xdp_zc_qps);
	pf->next_vsi = i - 1;
	kfree(vsi);
unlock_pf:
	mutex_unlock(&pf->switch_mutex);
	return ret;
}

Project: linux
File: i40e_main.c

static int i40e_add_channel(struct i40e_pf *pf, u16 uplink_seid,
			    struct i40e_channel *ch)
{
	struct i40e_hw *hw = &pf->hw;
	struct i40e_vsi_context ctxt;
	u8 enabled_tc = 0x1; /* TC0 enabled */
	int ret;

	if (ch->type != I40E_VSI_VMDQ2) {
		dev_info(&pf->pdev->dev,
			 "add new vsi failed, ch->type %d\n", ch->type);
		return -EINVAL;
	}

	memset(&ctxt, 0, sizeof(ctxt));
	ctxt.pf_num = hw->pf_id;
	ctxt.vf_num = 0;
	ctxt.uplink_seid = uplink_seid;
	ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
	if (ch->type == I40E_VSI_VMDQ2)
		ctxt.flags = I40E_AQ_VSI_TYPE_VMDQ2;

	if (pf->flags & I40E_FLAG_VEB_MODE_ENABLED) {
		ctxt.info.valid_sections |=
		     cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
		ctxt.info.switch_id =
		   cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
	}

	/* Set queue map for a given VSI context */
	i40e_channel_setup_queue_map(pf, &ctxt, ch);

	/* Now time to create VSI */
	ret = i40e_aq_add_vsi(hw, &ctxt, NULL);
	if (ret) {
		dev_info(&pf->pdev->dev,
			 "add new vsi failed, err %s aq_err %s\n",
			 i40e_stat_str(&pf->hw, ret),
			 i40e_aq_str(&pf->hw,
				     pf->hw.aq.asq_last_status));
		return -ENOENT;
	}

	/* Success, update channel, set enabled_tc only if the channel
	 * is not a macvlan
	 */
	ch->enabled_tc = !i40e_is_channel_macvlan(ch) && enabled_tc;
	ch->seid = ctxt.seid;
	ch->vsi_number = ctxt.vsi_number;
	ch->stat_counter_idx = cpu_to_le16(ctxt.info.stat_counter_idx);

	/* copy just the sections touched not the entire info
	 * since not all sections are valid as returned by
	 * update vsi params
	 */
	ch->info.mapping_flags = ctxt.info.mapping_flags;
	memcpy(&ch->info.queue_mapping,
	       &ctxt.info.queue_mapping, sizeof(ctxt.info.queue_mapping));
	memcpy(&ch->info.tc_mapping, ctxt.info.tc_mapping,
	       sizeof(ctxt.info.tc_mapping));

	return 0;
}

Project: linux
File: i40e_main.c

static void i40e_link_event(struct i40e_pf *pf)
{
	struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
	u8 new_link_speed, old_link_speed;
	i40e_status status;
	bool new_link, old_link;

	/* set this to force the get_link_status call to refresh state */
	pf->hw.phy.get_link_info = true;
	old_link = (pf->hw.phy.link_info_old.link_info & I40E_AQ_LINK_UP);
	status = i40e_get_link_status(&pf->hw, &new_link);

	/* On success, disable temp link polling */
	if (status == I40E_SUCCESS) {
		clear_bit(__I40E_TEMP_LINK_POLLING, pf->state);
	} else {
		/* Enable link polling temporarily until i40e_get_link_status
		 * returns I40E_SUCCESS
		 */
		set_bit(__I40E_TEMP_LINK_POLLING, pf->state);
		dev_dbg(&pf->pdev->dev, "couldn't get link state, status: %d\n",
			status);
		return;
	}

	old_link_speed = pf->hw.phy.link_info_old.link_speed;
	new_link_speed = pf->hw.phy.link_info.link_speed;

	if (new_link == old_link &&
	    new_link_speed == old_link_speed &&
	    (test_bit(__I40E_VSI_DOWN, vsi->state) ||
	     new_link == netif_carrier_ok(vsi->netdev)))
		return;

	i40e_print_link_message(vsi, new_link);

	/* Notify the base of the switch tree connected to
	 * the link.  Floating VEBs are not notified.
	 */
	if (pf->lan_veb < I40E_MAX_VEB && pf->veb[pf->lan_veb])
		i40e_veb_link_event(pf->veb[pf->lan_veb], new_link);
	else
		i40e_vsi_link_event(vsi, new_link);

	if (pf->vf)
		i40e_vc_notify_link_state(pf);

	if (pf->flags & I40E_FLAG_PTP)
		i40e_ptp_set_increment(pf);
}

Project: linux
File: i40e_main.c

static void i40e_rm_default_mac_filter(struct i40e_vsi *vsi, u8 *macaddr)
{
	struct i40e_aqc_remove_macvlan_element_data element;
	struct i40e_pf *pf = vsi->back;

	/* Only appropriate for the PF main VSI */
	if (vsi->type != I40E_VSI_MAIN)
		return;

	memset(&element, 0, sizeof(element));
	ether_addr_copy(element.mac_addr, macaddr);
	element.vlan_tag = 0;
	/* Ignore error returns, some firmware does it this way... */
	element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
	i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);

	memset(&element, 0, sizeof(element));
	ether_addr_copy(element.mac_addr, macaddr);
	element.vlan_tag = 0;
	/* ...and some firmware does it this way. */
	element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH |
			I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
	i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
}

Project: linux
File: i40e_main.c

static void i40e_set_rx_mode(struct net_device *netdev)
{
	struct i40e_netdev_priv *np = netdev_priv(netdev);
	struct i40e_vsi *vsi = np->vsi;

	spin_lock_bh(&vsi->mac_filter_hash_lock);

	__dev_uc_sync(netdev, i40e_addr_sync, i40e_addr_unsync);
	__dev_mc_sync(netdev, i40e_addr_sync, i40e_addr_unsync);

	spin_unlock_bh(&vsi->mac_filter_hash_lock);

	/* check for other flag changes */
	if (vsi->current_netdev_flags != vsi->netdev->flags) {
		vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
		set_bit(__I40E_MACVLAN_SYNC_PENDING, vsi->back->state);
	}
}

Project: linux
File: i40e_main.c

struct i40e_mac_filter *i40e_add_filter(struct i40e_vsi *vsi,
					const u8 *macaddr, s16 vlan)
{
	struct i40e_mac_filter *f;
	u64 key;

	if (!vsi || !macaddr)
		return NULL;

	f = i40e_find_filter(vsi, macaddr, vlan);
	if (!f) {
		f = kzalloc(sizeof(*f), GFP_ATOMIC);
		if (!f)
			return NULL;

		/* Update the boolean indicating if we need to function in
		 * VLAN mode.
		 */
		if (vlan >= 0)
			vsi->has_vlan_filter = true;

		ether_addr_copy(f->macaddr, macaddr);
		f->vlan = vlan;
		f->state = I40E_FILTER_NEW;
		INIT_HLIST_NODE(&f->hlist);

		key = i40e_addr_to_hkey(macaddr);
		hash_add(vsi->mac_filter_hash, &f->hlist, key);

		vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
		set_bit(__I40E_MACVLAN_SYNC_PENDING, vsi->back->state);
	}

	/* If we're asked to add a filter that has been marked for removal, it
	 * is safe to simply restore it to active state. __i40e_del_filter
	 * will have simply deleted any filters which were previously marked
	 * NEW or FAILED, so if it is currently marked REMOVE it must have
	 * previously been ACTIVE. Since we haven't yet run the sync filters
	 * task, just restore this filter to the ACTIVE state so that the
	 * sync task leaves it in place
	 */
	if (f->state == I40E_FILTER_REMOVE)
		f->state = I40E_FILTER_ACTIVE;

	return f;
}

Project: linux
File: i40e_main.c

static int i40e_add_vsi(struct i40e_vsi *vsi)
{
	int ret = -ENODEV;
	struct i40e_pf *pf = vsi->back;
	struct i40e_hw *hw = &pf->hw;
	struct i40e_vsi_context ctxt;
	struct i40e_mac_filter *f;
	struct hlist_node *h;
	int bkt;

	u8 enabled_tc = 0x1; /* TC0 enabled */
	int f_count = 0;

	memset(&ctxt, 0, sizeof(ctxt));
	switch (vsi->type) {
	case I40E_VSI_MAIN:
		/* The PF's main VSI is already setup as part of the
		 * device initialization, so we'll not bother with
		 * the add_vsi call, but we will retrieve the current
		 * VSI context.
		 */
		ctxt.seid = pf->main_vsi_seid;
		ctxt.pf_num = pf->hw.pf_id;
		ctxt.vf_num = 0;
		ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
		ctxt.flags = I40E_AQ_VSI_TYPE_PF;
		if (ret) {
			dev_info(&pf->pdev->dev,
				 "couldn't get PF vsi config, err %s aq_err %s\n",
				 i40e_stat_str(&pf->hw, ret),
				 i40e_aq_str(&pf->hw,
					     pf->hw.aq.asq_last_status));
			return -ENOENT;
		}
		vsi->info = ctxt.info;
		vsi->info.valid_sections = 0;

		vsi->seid = ctxt.seid;
		vsi->id = ctxt.vsi_number;

		enabled_tc = i40e_pf_get_tc_map(pf);

		/* Source pruning is enabled by default, so the flag is
		 * negative logic - if it's set, we need to fiddle with
		 * the VSI to disable source pruning.
		 */
		if (pf->flags & I40E_FLAG_SOURCE_PRUNING_DISABLED) {
			memset(&ctxt, 0, sizeof(ctxt));
			ctxt.seid = pf->main_vsi_seid;
			ctxt.pf_num = pf->hw.pf_id;
			ctxt.vf_num = 0;
			ctxt.info.valid_sections |=
				     cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
			ctxt.info.switch_id =
				   cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_LOCAL_LB);
			ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
			if (ret) {
				dev_info(&pf->pdev->dev,
					 "update vsi failed, err %s aq_err %s\n",
					 i40e_stat_str(&pf->hw, ret),
					 i40e_aq_str(&pf->hw,
						     pf->hw.aq.asq_last_status));
				ret = -ENOENT;
				goto err;
			}
		}

		/* MFP mode setup queue map and update VSI */
		if ((pf->flags & I40E_FLAG_MFP_ENABLED) &&
		    !(pf->hw.func_caps.iscsi)) { /* NIC type PF */
			memset(&ctxt, 0, sizeof(ctxt));
			ctxt.seid = pf->main_vsi_seid;
			ctxt.pf_num = pf->hw.pf_id;
			ctxt.vf_num = 0;
			i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
			ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
			if (ret) {
				dev_info(&pf->pdev->dev,
					 "update vsi failed, err %s aq_err %s\n",
					 i40e_stat_str(&pf->hw, ret),
					 i40e_aq_str(&pf->hw,
						    pf->hw.aq.asq_last_status));
				ret = -ENOENT;
				goto err;
			}
			/* update the local VSI info queue map */
			i40e_vsi_update_queue_map(vsi, &ctxt);
			vsi->info.valid_sections = 0;
		} else {
			/* Default/Main VSI is only enabled for TC0
			 * reconfigure it to enable all TCs that are
			 * available on the port in SFP mode.
			 * For MFP case the iSCSI PF would use this
			 * flow to enable LAN+iSCSI TC.
			 */
			ret = i40e_vsi_config_tc(vsi, enabled_tc);
			if (ret) {
				/* Single TC condition is not fatal,
				 * message and continue
				 */
				dev_info(&pf->pdev->dev,
					 "failed to configure TCs for main VSI tc_map 0x%08x, err %s aq_err %s\n",
					 enabled_tc,
					 i40e_stat_str(&pf->hw, ret),
					 i40e_aq_str(&pf->hw,
						    pf->hw.aq.asq_last_status));
			}
		}
		break;

	case I40E_VSI_FDIR:
		ctxt.pf_num = hw->pf_id;
		ctxt.vf_num = 0;
		ctxt.uplink_seid = vsi->uplink_seid;
		ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
		ctxt.flags = I40E_AQ_VSI_TYPE_PF;
		if ((pf->flags & I40E_FLAG_VEB_MODE_ENABLED) &&
		    (i40e_is_vsi_uplink_mode_veb(vsi))) {
			ctxt.info.valid_sections |=
			     cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
			ctxt.info.switch_id =
			   cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
		}
		i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
		break;

	case I40E_VSI_VMDQ2:
		ctxt.pf_num = hw->pf_id;
		ctxt.vf_num = 0;
		ctxt.uplink_seid = vsi->uplink_seid;
		ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
		ctxt.flags = I40E_AQ_VSI_TYPE_VMDQ2;

		/* This VSI is connected to VEB so the switch_id
		 * should be set to zero by default.
		 */
		if (i40e_is_vsi_uplink_mode_veb(vsi)) {
			ctxt.info.valid_sections |=
				cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
			ctxt.info.switch_id =
				cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
		}

		/* Setup the VSI tx/rx queue map for TC0 only for now */
		i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
		break;

	case I40E_VSI_SRIOV:
		ctxt.pf_num = hw->pf_id;
		ctxt.vf_num = vsi->vf_id + hw->func_caps.vf_base_id;
		ctxt.uplink_seid = vsi->uplink_seid;
		ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
		ctxt.flags = I40E_AQ_VSI_TYPE_VF;

		/* This VSI is connected to VEB so the switch_id
		 * should be set to zero by default.
		 */
		if (i40e_is_vsi_uplink_mode_veb(vsi)) {
			ctxt.info.valid_sections |=
				cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
			ctxt.info.switch_id =
				cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
		}

		if (vsi->back->flags & I40E_FLAG_IWARP_ENABLED) {
			ctxt.info.valid_sections |=
				cpu_to_le16(I40E_AQ_VSI_PROP_QUEUE_OPT_VALID);
			ctxt.info.queueing_opt_flags |=
				(I40E_AQ_VSI_QUE_OPT_TCP_ENA |
				 I40E_AQ_VSI_QUE_OPT_RSS_LUT_VSI);
		}

		ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
		ctxt.info.port_vlan_flags |= I40E_AQ_VSI_PVLAN_MODE_ALL;
		if (pf->vf[vsi->vf_id].spoofchk) {
			ctxt.info.valid_sections |=
				cpu_to_le16(I40E_AQ_VSI_PROP_SECURITY_VALID);
			ctxt.info.sec_flags |=
				(I40E_AQ_VSI_SEC_FLAG_ENABLE_VLAN_CHK |
				 I40E_AQ_VSI_SEC_FLAG_ENABLE_MAC_CHK);
		}
		/* Setup the VSI tx/rx queue map for TC0 only for now */
		i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
		break;

	case I40E_VSI_IWARP:
		/* send down message to iWARP */
		break;

	default:
		return -ENODEV;
	}

	if (vsi->type != I40E_VSI_MAIN) {
		ret = i40e_aq_add_vsi(hw, &ctxt, NULL);
		if (ret) {
			dev_info(&vsi->back->pdev->dev,
				 "add vsi failed, err %s aq_err %s\n",
				 i40e_stat_str(&pf->hw, ret),
				 i40e_aq_str(&pf->hw,
					     pf->hw.aq.asq_last_status));
			ret = -ENOENT;
			goto err;
		}
		vsi->info = ctxt.info;
		vsi->info.valid_sections = 0;
		vsi->seid = ctxt.seid;
		vsi->id = ctxt.vsi_number;
	}

	vsi->active_filters = 0;
	clear_bit(__I40E_VSI_OVERFLOW_PROMISC, vsi->state);
	spin_lock_bh(&vsi->mac_filter_hash_lock);
	/* If macvlan filters already exist, force them to get loaded */
	hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist) {
		f->state = I40E_FILTER_NEW;
		f_count++;
	}
	spin_unlock_bh(&vsi->mac_filter_hash_lock);

	if (f_count) {
		vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
		set_bit(__I40E_MACVLAN_SYNC_PENDING, pf->state);
	}

	/* Update VSI BW information */
	ret = i40e_vsi_get_bw_info(vsi);
	if (ret) {
		dev_info(&pf->pdev->dev,
			 "couldn't get vsi bw info, err %s aq_err %s\n",
			 i40e_stat_str(&pf->hw, ret),
			 i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
		/* VSI is already added so not tearing that up */
		ret = 0;
	}

err:
	return ret;
}

Project: linux
File: i40e_main.c

void i40e_vsi_kill_vlan(struct i40e_vsi *vsi, u16 vid)
{
	if (!vid || vsi->info.pvid)
		return;

	spin_lock_bh(&vsi->mac_filter_hash_lock);
	i40e_rm_vlan_all_mac(vsi, vid);
	spin_unlock_bh(&vsi->mac_filter_hash_lock);

	/* schedule our worker thread which will take care of
	 * applying the new filter changes
	 */
	i40e_service_event_schedule(vsi->back);
}

Project: linux
File: i40e_main.c

void i40e_irq_dynamic_enable_icr0(struct i40e_pf *pf)
{
	struct i40e_hw *hw = &pf->hw;
	u32 val;

	val = I40E_PFINT_DYN_CTL0_INTENA_MASK   |
	      I40E_PFINT_DYN_CTL0_CLEARPBA_MASK |
	      (I40E_ITR_NONE << I40E_PFINT_DYN_CTL0_ITR_INDX_SHIFT);

	wr32(hw, I40E_PFINT_DYN_CTL0, val);
	i40e_flush(hw);
}

Project: linux
File: i40e_main.c

static u8 i40e_pf_get_num_tc(struct i40e_pf *pf)
{
	struct i40e_hw *hw = &pf->hw;
	u8 i, enabled_tc = 1;
	u8 num_tc = 0;
	struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;

	if (pf->flags & I40E_FLAG_TC_MQPRIO)
		return pf->vsi[pf->lan_vsi]->mqprio_qopt.qopt.num_tc;

	/* If neither MQPRIO nor DCB is enabled, then always use single TC */
	if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
		return 1;

	/* SFP mode will be enabled for all TCs on port */
	if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
		return i40e_dcb_get_num_tc(dcbcfg);

	/* MFP mode return count of enabled TCs for this PF */
	if (pf->hw.func_caps.iscsi)
		enabled_tc =  i40e_get_iscsi_tc_map(pf);
	else
		return 1; /* Only TC0 */

	for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
		if (enabled_tc & BIT(i))
			num_tc++;
	}
	return num_tc;
}

Project: linux
File: i40e_main.c

static int i40e_delete_clsflower(struct i40e_vsi *vsi,
				 struct flow_cls_offload *cls_flower)
{
	struct i40e_cloud_filter *filter = NULL;
	struct i40e_pf *pf = vsi->back;
	int err = 0;

	filter = i40e_find_cloud_filter(vsi, &cls_flower->cookie);

	if (!filter)
		return -EINVAL;

	hash_del(&filter->cloud_node);

	if (filter->dst_port)
		err = i40e_add_del_cloud_filter_big_buf(vsi, filter, false);
	else
		err = i40e_add_del_cloud_filter(vsi, filter, false);

	kfree(filter);
	if (err) {
		dev_err(&pf->pdev->dev,
			"Failed to delete cloud filter, err %s\n",
			i40e_stat_str(&pf->hw, err));
		return i40e_aq_rc_to_posix(err, pf->hw.aq.asq_last_status);
	}

	pf->num_cloud_filters--;
	if (!pf->num_cloud_filters)
		if ((pf->flags & I40E_FLAG_FD_SB_TO_CLOUD_FILTER) &&
		    !(pf->flags & I40E_FLAG_FD_SB_INACTIVE)) {
			pf->flags |= I40E_FLAG_FD_SB_ENABLED;
			pf->flags &= ~I40E_FLAG_FD_SB_TO_CLOUD_FILTER;
			pf->flags &= ~I40E_FLAG_FD_SB_INACTIVE;
		}
	return 0;
}

Project: linux
File: i40e_main.c

u32 i40e_get_global_fd_count(struct i40e_pf *pf)
{
	u32 val, fcnt_prog;

	val = rd32(&pf->hw, I40E_GLQF_FDCNT_0);
	fcnt_prog = (val & I40E_GLQF_FDCNT_0_GUARANT_CNT_MASK) +
		    ((val & I40E_GLQF_FDCNT_0_BESTCNT_MASK) >>
		     I40E_GLQF_FDCNT_0_BESTCNT_SHIFT);
	return fcnt_prog;
}

Project: linux
File: i40e_main.c

static void i40e_vsi_free_arrays(struct i40e_vsi *vsi, bool free_qvectors)
{
	/* free the ring and vector containers */
	if (free_qvectors) {
		kfree(vsi->q_vectors);
		vsi->q_vectors = NULL;
	}
	kfree(vsi->tx_rings);
	vsi->tx_rings = NULL;
	vsi->rx_rings = NULL;
	vsi->xdp_rings = NULL;
}

Project: linux
File: i40e_main.c

int i40e_vsi_wait_queues_disabled(struct i40e_vsi *vsi)
{
	struct i40e_pf *pf = vsi->back;
	int i, pf_q, ret;

	pf_q = vsi->base_queue;
	for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
		/* Check and wait for the Tx queue */
		ret = i40e_pf_txq_wait(pf, pf_q, false);
		if (ret) {
			dev_info(&pf->pdev->dev,
				 "VSI seid %d Tx ring %d disable timeout\n",
				 vsi->seid, pf_q);
			return ret;
		}

		if (!i40e_enabled_xdp_vsi(vsi))
			goto wait_rx;

		/* Check and wait for the XDP Tx queue */
		ret = i40e_pf_txq_wait(pf, pf_q + vsi->alloc_queue_pairs,
				       false);
		if (ret) {
			dev_info(&pf->pdev->dev,
				 "VSI seid %d XDP Tx ring %d disable timeout\n",
				 vsi->seid, pf_q);
			return ret;
		}
wait_rx:
		/* Check and wait for the Rx queue */
		ret = i40e_pf_rxq_wait(pf, pf_q, false);
		if (ret) {
			dev_info(&pf->pdev->dev,
				 "VSI seid %d Rx ring %d disable timeout\n",
				 vsi->seid, pf_q);
			return ret;
		}
	}

	return 0;
}

Project: linux
File: i40e_main.c

static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
{
	struct i40e_aq_get_phy_abilities_resp abilities;
	struct i40e_pf *pf;
	struct i40e_hw *hw;
	static u16 pfs_found;
	u16 wol_nvm_bits;
	u16 link_status;
	int err;
	u32 val;
	u32 i;
	u8 set_fc_aq_fail;

	err = pci_enable_device_mem(pdev);
	if (err)
		return err;

	/* set up for high or low dma */
	err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
	if (err) {
		err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
		if (err) {
			dev_err(&pdev->dev,
				"DMA configuration failed: 0x%x\n", err);
			goto err_dma;
		}
	}

	/* set up pci connections */
	err = pci_request_mem_regions(pdev, i40e_driver_name);
	if (err) {
		dev_info(&pdev->dev,
			 "pci_request_selected_regions failed %d\n", err);
		goto err_pci_reg;
	}

	pci_enable_pcie_error_reporting(pdev);
	pci_set_master(pdev);

	/* Now that we have a PCI connection, we need to do the
	 * low level device setup.  This is primarily setting up
	 * the Admin Queue structures and then querying for the
	 * device's current profile information.
	 */
	pf = kzalloc(sizeof(*pf), GFP_KERNEL);
	if (!pf) {
		err = -ENOMEM;
		goto err_pf_alloc;
	}
	pf->next_vsi = 0;
	pf->pdev = pdev;
	set_bit(__I40E_DOWN, pf->state);

	hw = &pf->hw;
	hw->back = pf;

	pf->ioremap_len = min_t(int, pci_resource_len(pdev, 0),
				I40E_MAX_CSR_SPACE);
	/* We believe that the highest register to read is
	 * I40E_GLGEN_STAT_CLEAR, so we check if the BAR size
	 * is not less than that before mapping to prevent a
	 * kernel panic.
	 */
	if (pf->ioremap_len < I40E_GLGEN_STAT_CLEAR) {
		dev_err(&pdev->dev, "Cannot map registers, bar size 0x%X too small, aborting\n",
			pf->ioremap_len);
		err = -ENOMEM;
		goto err_ioremap;
	}
	hw->hw_addr = ioremap(pci_resource_start(pdev, 0), pf->ioremap_len);
	if (!hw->hw_addr) {
		err = -EIO;
		dev_info(&pdev->dev, "ioremap(0x%04x, 0x%04x) failed: 0x%x\n",
			 (unsigned int)pci_resource_start(pdev, 0),
			 pf->ioremap_len, err);
		goto err_ioremap;
	}
	hw->vendor_id = pdev->vendor;
	hw->device_id = pdev->device;
	pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
	hw->subsystem_vendor_id = pdev->subsystem_vendor;
	hw->subsystem_device_id = pdev->subsystem_device;
	hw->bus.device = PCI_SLOT(pdev->devfn);
	hw->bus.func = PCI_FUNC(pdev->devfn);
	hw->bus.bus_id = pdev->bus->number;
	pf->instance = pfs_found;

	/* Select something other than the 802.1ad ethertype for the
	 * switch to use internally and drop on ingress.
	 */
	hw->switch_tag = 0xffff;
	hw->first_tag = ETH_P_8021AD;
	hw->second_tag = ETH_P_8021Q;

	INIT_LIST_HEAD(&pf->l3_flex_pit_list);
	INIT_LIST_HEAD(&pf->l4_flex_pit_list);
	INIT_LIST_HEAD(&pf->ddp_old_prof);

	/* set up the locks for the AQ, do this only once in probe
	 * and destroy them only once in remove
	 */
	mutex_init(&hw->aq.asq_mutex);
	mutex_init(&hw->aq.arq_mutex);

	pf->msg_enable = netif_msg_init(debug,
					NETIF_MSG_DRV |
					NETIF_MSG_PROBE |
					NETIF_MSG_LINK);
	if (debug < -1)
		pf->hw.debug_mask = debug;

	/* do a special CORER for clearing PXE mode once at init */
	if (hw->revision_id == 0 &&
	    (rd32(hw, I40E_GLLAN_RCTL_0) & I40E_GLLAN_RCTL_0_PXE_MODE_MASK)) {
		wr32(hw, I40E_GLGEN_RTRIG, I40E_GLGEN_RTRIG_CORER_MASK);
		i40e_flush(hw);
		msleep(200);
		pf->corer_count++;

		i40e_clear_pxe_mode(hw);
	}

	/* Reset here to make sure all is clean and to define PF 'n' */
	i40e_clear_hw(hw);

	err = i40e_set_mac_type(hw);
	if (err) {
		dev_warn(&pdev->dev, "unidentified MAC or BLANK NVM: %d\n",
			 err);
		goto err_pf_reset;
	}

	err = i40e_pf_loop_reset(pf);
	if (err) {
		dev_info(&pdev->dev, "Initial pf_reset failed: %d\n", err);
		goto err_pf_reset;
	}

	i40e_check_recovery_mode(pf);

	hw->aq.num_arq_entries = I40E_AQ_LEN;
	hw->aq.num_asq_entries = I40E_AQ_LEN;
	hw->aq.arq_buf_size = I40E_MAX_AQ_BUF_SIZE;
	hw->aq.asq_buf_size = I40E_MAX_AQ_BUF_SIZE;
	pf->adminq_work_limit = I40E_AQ_WORK_LIMIT;

	snprintf(pf->int_name, sizeof(pf->int_name) - 1,
		 "%s-%s:misc",
		 dev_driver_string(&pf->pdev->dev), dev_name(&pdev->dev));

	err = i40e_init_shared_code(hw);
	if (err) {
		dev_warn(&pdev->dev, "unidentified MAC or BLANK NVM: %d\n",
			 err);
		goto err_pf_reset;
	}

	/* set up a default setting for link flow control */
	pf->hw.fc.requested_mode = I40E_FC_NONE;

	err = i40e_init_adminq(hw);
	if (err) {
		if (err == I40E_ERR_FIRMWARE_API_VERSION)
			dev_info(&pdev->dev,
				 "The driver for the device stopped because the NVM image v%u.%u is newer than expected v%u.%u. You must install the most recent version of the network driver.\n",
				 hw->aq.api_maj_ver,
				 hw->aq.api_min_ver,
				 I40E_FW_API_VERSION_MAJOR,
				 I40E_FW_MINOR_VERSION(hw));
		else
			dev_info(&pdev->dev,
				 "The driver for the device stopped because the device firmware failed to init. Try updating your NVM image.\n");

		goto err_pf_reset;
	}
	i40e_get_oem_version(hw);

	/* provide nvm, fw, api versions, vendor:device id, subsys vendor:device id */
	dev_info(&pdev->dev, "fw %d.%d.%05d api %d.%d nvm %s [%04x:%04x] [%04x:%04x]\n",
		 hw->aq.fw_maj_ver, hw->aq.fw_min_ver, hw->aq.fw_build,
		 hw->aq.api_maj_ver, hw->aq.api_min_ver,
		 i40e_nvm_version_str(hw), hw->vendor_id, hw->device_id,
		 hw->subsystem_vendor_id, hw->subsystem_device_id);

	if (hw->aq.api_maj_ver == I40E_FW_API_VERSION_MAJOR &&
	    hw->aq.api_min_ver > I40E_FW_MINOR_VERSION(hw))
		dev_info(&pdev->dev,
			 "The driver for the device detected a newer version of the NVM image v%u.%u than expected v%u.%u. Please install the most recent version of the network driver.\n",
			 hw->aq.api_maj_ver,
			 hw->aq.api_min_ver,
			 I40E_FW_API_VERSION_MAJOR,
			 I40E_FW_MINOR_VERSION(hw));
	else if (hw->aq.api_maj_ver == 1 && hw->aq.api_min_ver < 4)
		dev_info(&pdev->dev,
			 "The driver for the device detected an older version of the NVM image v%u.%u than expected v%u.%u. Please update the NVM image.\n",
			 hw->aq.api_maj_ver,
			 hw->aq.api_min_ver,
			 I40E_FW_API_VERSION_MAJOR,
			 I40E_FW_MINOR_VERSION(hw));

	i40e_verify_eeprom(pf);

	/* Rev 0 hardware was never productized */
	if (hw->revision_id < 1)
		dev_warn(&pdev->dev, "This device is a pre-production adapter/LOM. Please be aware there may be issues with your hardware. If you are experiencing problems please contact your Intel or hardware representative who provided you with this hardware.\n");

	i40e_clear_pxe_mode(hw);

	err = i40e_get_capabilities(pf, i40e_aqc_opc_list_func_capabilities);
	if (err)
		goto err_adminq_setup;

	err = i40e_sw_init(pf);
	if (err) {
		dev_info(&pdev->dev, "sw_init failed: %d\n", err);
		goto err_sw_init;
	}

	if (test_bit(__I40E_RECOVERY_MODE, pf->state))
		return i40e_init_recovery_mode(pf, hw);

	err = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
				hw->func_caps.num_rx_qp, 0, 0);
	if (err) {
		dev_info(&pdev->dev, "init_lan_hmc failed: %d\n", err);
		goto err_init_lan_hmc;
	}

	err = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
	if (err) {
		dev_info(&pdev->dev, "configure_lan_hmc failed: %d\n", err);
		err = -ENOENT;
		goto err_configure_lan_hmc;
	}

	/* Disable LLDP for NICs that have firmware versions lower than v4.3.
	 * Ignore error return codes because if it was already disabled via
	 * hardware settings this will fail
	 */
	if (pf->hw_features & I40E_HW_STOP_FW_LLDP) {
		dev_info(&pdev->dev, "Stopping firmware LLDP agent.\n");
		i40e_aq_stop_lldp(hw, true, false, NULL);
	}

	/* allow a platform config to override the HW addr */
	i40e_get_platform_mac_addr(pdev, pf);

	if (!is_valid_ether_addr(hw->mac.addr)) {
		dev_info(&pdev->dev, "invalid MAC address %pM\n", hw->mac.addr);
		err = -EIO;
		goto err_mac_addr;
	}
	dev_info(&pdev->dev, "MAC address: %pM\n", hw->mac.addr);
	ether_addr_copy(hw->mac.perm_addr, hw->mac.addr);
	i40e_get_port_mac_addr(hw, hw->mac.port_addr);
	if (is_valid_ether_addr(hw->mac.port_addr))
		pf->hw_features |= I40E_HW_PORT_ID_VALID;

	pci_set_drvdata(pdev, pf);
	pci_save_state(pdev);

	dev_info(&pdev->dev,
		 (pf->flags & I40E_FLAG_DISABLE_FW_LLDP) ?
			"FW LLDP is disabled\n" :
			"FW LLDP is enabled\n");

	/* Enable FW to write default DCB config on link-up */
	i40e_aq_set_dcb_parameters(hw, true, NULL);

#ifdef CONFIG_I40E_DCB
	err = i40e_init_pf_dcb(pf);
	if (err) {
		dev_info(&pdev->dev, "DCB init failed %d, disabled\n", err);
		pf->flags &= ~(I40E_FLAG_DCB_CAPABLE | I40E_FLAG_DCB_ENABLED);
		/* Continue without DCB enabled */
	}
#endif /* CONFIG_I40E_DCB */

	/* set up periodic task facility */
	timer_setup(&pf->service_timer, i40e_service_timer, 0);
	pf->service_timer_period = HZ;

	INIT_WORK(&pf->service_task, i40e_service_task);
	clear_bit(__I40E_SERVICE_SCHED, pf->state);

	/* NVM bit on means WoL disabled for the port */
	i40e_read_nvm_word(hw, I40E_SR_NVM_WAKE_ON_LAN, &wol_nvm_bits);
	if (BIT (hw->port) & wol_nvm_bits || hw->partition_id != 1)
		pf->wol_en = false;
	else
		pf->wol_en = true;
	device_set_wakeup_enable(&pf->pdev->dev, pf->wol_en);

	/* set up the main switch operations */
	i40e_determine_queue_usage(pf);
	err = i40e_init_interrupt_scheme(pf);
	if (err)
		goto err_switch_setup;

	/* The number of VSIs reported by the FW is the minimum guaranteed
	 * to us; HW supports far more and we share the remaining pool with
	 * the other PFs. We allocate space for more than the guarantee with
	 * the understanding that we might not get them all later.
	 */
	if (pf->hw.func_caps.num_vsis < I40E_MIN_VSI_ALLOC)
		pf->num_alloc_vsi = I40E_MIN_VSI_ALLOC;
	else
		pf->num_alloc_vsi = pf->hw.func_caps.num_vsis;

	/* Set up the *vsi struct and our local tracking of the MAIN PF vsi. */
	pf->vsi = kcalloc(pf->num_alloc_vsi, sizeof(struct i40e_vsi *),
			  GFP_KERNEL);
	if (!pf->vsi) {
		err = -ENOMEM;
		goto err_switch_setup;
	}

#ifdef CONFIG_PCI_IOV
	/* prep for VF support */
	if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
	    (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
	    !test_bit(__I40E_BAD_EEPROM, pf->state)) {
		if (pci_num_vf(pdev))
			pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
	}
#endif
	err = i40e_setup_pf_switch(pf, false);
	if (err) {
		dev_info(&pdev->dev, "setup_pf_switch failed: %d\n", err);
		goto err_vsis;
	}
	INIT_LIST_HEAD(&pf->vsi[pf->lan_vsi]->ch_list);

	/* Make sure flow control is set according to current settings */
	err = i40e_set_fc(hw, &set_fc_aq_fail, true);
	if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_GET)
		dev_dbg(&pf->pdev->dev,
			"Set fc with err %s aq_err %s on get_phy_cap\n",
			i40e_stat_str(hw, err),
			i40e_aq_str(hw, hw->aq.asq_last_status));
	if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_SET)
		dev_dbg(&pf->pdev->dev,
			"Set fc with err %s aq_err %s on set_phy_config\n",
			i40e_stat_str(hw, err),
			i40e_aq_str(hw, hw->aq.asq_last_status));
	if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_UPDATE)
		dev_dbg(&pf->pdev->dev,
			"Set fc with err %s aq_err %s on get_link_info\n",
			i40e_stat_str(hw, err),
			i40e_aq_str(hw, hw->aq.asq_last_status));

	/* if FDIR VSI was set up, start it now */
	for (i = 0; i < pf->num_alloc_vsi; i++) {
		if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
			i40e_vsi_open(pf->vsi[i]);
			break;
		}
	}

	/* The driver only wants link up/down and module qualification
	 * reports from firmware.  Note the negative logic.
	 */
	err = i40e_aq_set_phy_int_mask(&pf->hw,
				       ~(I40E_AQ_EVENT_LINK_UPDOWN |
					 I40E_AQ_EVENT_MEDIA_NA |
					 I40E_AQ_EVENT_MODULE_QUAL_FAIL), NULL);
	if (err)
		dev_info(&pf->pdev->dev, "set phy mask fail, err %s aq_err %s\n",
			 i40e_stat_str(&pf->hw, err),
			 i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));

	/* Reconfigure hardware for allowing smaller MSS in the case
	 * of TSO, so that we avoid the MDD being fired and causing
	 * a reset in the case of small MSS+TSO.
	 */
	val = rd32(hw, I40E_REG_MSS);
	if ((val & I40E_REG_MSS_MIN_MASK) > I40E_64BYTE_MSS) {
		val &= ~I40E_REG_MSS_MIN_MASK;
		val |= I40E_64BYTE_MSS;
		wr32(hw, I40E_REG_MSS, val);
	}

	if (pf->hw_features & I40E_HW_RESTART_AUTONEG) {
		msleep(75);
		err = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
		if (err)
			dev_info(&pf->pdev->dev, "link restart failed, err %s aq_err %s\n",
				 i40e_stat_str(&pf->hw, err),
				 i40e_aq_str(&pf->hw,
					     pf->hw.aq.asq_last_status));
	}
	/* The main driver is (mostly) up and happy. We need to set this state
	 * before setting up the misc vector or we get a race and the vector
	 * ends up disabled forever.
	 */
	clear_bit(__I40E_DOWN, pf->state);

	/* In case of MSIX we are going to setup the misc vector right here
	 * to handle admin queue events etc. In case of legacy and MSI
	 * the misc functionality and queue processing is combined in
	 * the same vector and that gets setup at open.
	 */
	if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
		err = i40e_setup_misc_vector(pf);
		if (err) {
			dev_info(&pdev->dev,
				 "setup of misc vector failed: %d\n", err);
			goto err_vsis;
		}
	}

#ifdef CONFIG_PCI_IOV
	/* prep for VF support */
	if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
	    (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
	    !test_bit(__I40E_BAD_EEPROM, pf->state)) {
		/* disable link interrupts for VFs */
		val = rd32(hw, I40E_PFGEN_PORTMDIO_NUM);
		val &= ~I40E_PFGEN_PORTMDIO_NUM_VFLINK_STAT_ENA_MASK;
		wr32(hw, I40E_PFGEN_PORTMDIO_NUM, val);
		i40e_flush(hw);

		if (pci_num_vf(pdev)) {
			dev_info(&pdev->dev,
				 "Active VFs found, allocating resources.\n");
			err = i40e_alloc_vfs(pf, pci_num_vf(pdev));
			if (err)
				dev_info(&pdev->dev,
					 "Error %d allocating resources for existing VFs\n",
					 err);
		}
	}
#endif /* CONFIG_PCI_IOV */

	if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
		pf->iwarp_base_vector = i40e_get_lump(pf, pf->irq_pile,
						      pf->num_iwarp_msix,
						      I40E_IWARP_IRQ_PILE_ID);
		if (pf->iwarp_base_vector < 0) {
			dev_info(&pdev->dev,
				 "failed to get tracking for %d vectors for IWARP err=%d\n",
				 pf->num_iwarp_msix, pf->iwarp_base_vector);
			pf->flags &= ~I40E_FLAG_IWARP_ENABLED;
		}
	}

	i40e_dbg_pf_init(pf);

	/* tell the firmware that we're starting */
	i40e_send_version(pf);

	/* since everything's happy, start the service_task timer */
	mod_timer(&pf->service_timer,
		  round_jiffies(jiffies + pf->service_timer_period));

	/* add this PF to client device list and launch a client service task */
	if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
		err = i40e_lan_add_device(pf);
		if (err)
			dev_info(&pdev->dev, "Failed to add PF to client API service list: %d\n",
				 err);
	}

#define PCI_SPEED_SIZE 8
#define PCI_WIDTH_SIZE 8
	/* Devices on the IOSF bus do not have this information
	 * and will report PCI Gen 1 x 1 by default so don't bother
	 * checking them.
	 */
	if (!(pf->hw_features & I40E_HW_NO_PCI_LINK_CHECK)) {
		char speed[PCI_SPEED_SIZE] = "Unknown";
		char width[PCI_WIDTH_SIZE] = "Unknown";

		/* Get the negotiated link width and speed from PCI config
		 * space
		 */
		pcie_capability_read_word(pf->pdev, PCI_EXP_LNKSTA,
					  &link_status);

		i40e_set_pci_config_data(hw, link_status);

		switch (hw->bus.speed) {
		case i40e_bus_speed_8000:
			strlcpy(speed, "8.0", PCI_SPEED_SIZE); break;
		case i40e_bus_speed_5000:
			strlcpy(speed, "5.0", PCI_SPEED_SIZE); break;
		case i40e_bus_speed_2500:
			strlcpy(speed, "2.5", PCI_SPEED_SIZE); break;
		default:
			break;
		}
		switch (hw->bus.width) {
		case i40e_bus_width_pcie_x8:
			strlcpy(width, "8", PCI_WIDTH_SIZE); break;
		case i40e_bus_width_pcie_x4:
			strlcpy(width, "4", PCI_WIDTH_SIZE); break;
		case i40e_bus_width_pcie_x2:
			strlcpy(width, "2", PCI_WIDTH_SIZE); break;
		case i40e_bus_width_pcie_x1:
			strlcpy(width, "1", PCI_WIDTH_SIZE); break;
		default:
			break;
		}

		dev_info(&pdev->dev, "PCI-Express: Speed %sGT/s Width x%s\n",
			 speed, width);

		if (hw->bus.width < i40e_bus_width_pcie_x8 ||
		    hw->bus.speed < i40e_bus_speed_8000) {
			dev_warn(&pdev->dev, "PCI-Express bandwidth available for this device may be insufficient for optimal performance.\n");
			dev_warn(&pdev->dev, "Please move the device to a different PCI-e link with more lanes and/or higher transfer rate.\n");
		}
	}

	/* get the requested speeds from the fw */
	err = i40e_aq_get_phy_capabilities(hw, false, false, &abilities, NULL);
	if (err)
		dev_dbg(&pf->pdev->dev, "get requested speeds ret =  %s last_status =  %s\n",
			i40e_stat_str(&pf->hw, err),
			i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
	pf->hw.phy.link_info.requested_speeds = abilities.link_speed;

	/* set the FEC config due to the board capabilities */
	i40e_set_fec_in_flags(abilities.fec_cfg_curr_mod_ext_info, &pf->flags);

	/* get the supported phy types from the fw */
	err = i40e_aq_get_phy_capabilities(hw, false, true, &abilities, NULL);
	if (err)
		dev_dbg(&pf->pdev->dev, "get supported phy types ret =  %s last_status =  %s\n",
			i40e_stat_str(&pf->hw, err),
			i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));

	/* Add a filter to drop all Flow control frames from any VSI from being
	 * transmitted. By doing so we stop a malicious VF from sending out
	 * PAUSE or PFC frames and potentially controlling traffic for other
	 * PF/VF VSIs.
	 * The FW can still send Flow control frames if enabled.
	 */
	i40e_add_filter_to_drop_tx_flow_control_frames(&pf->hw,
						       pf->main_vsi_seid);

	if ((pf->hw.device_id == I40E_DEV_ID_10G_BASE_T) ||
		(pf->hw.device_id == I40E_DEV_ID_10G_BASE_T4))
		pf->hw_features |= I40E_HW_PHY_CONTROLS_LEDS;
	if (pf->hw.device_id == I40E_DEV_ID_SFP_I_X722)
		pf->hw_features |= I40E_HW_HAVE_CRT_RETIMER;
	/* print a string summarizing features */
	i40e_print_features(pf);

	return 0;

	/* Unwind what we've done if something failed in the setup */
err_vsis:
	set_bit(__I40E_DOWN, pf->state);
	i40e_clear_interrupt_scheme(pf);
	kfree(pf->vsi);
err_switch_setup:
	i40e_reset_interrupt_capability(pf);
	del_timer_sync(&pf->service_timer);
err_mac_addr:
err_configure_lan_hmc:
	(void)i40e_shutdown_lan_hmc(hw);
err_init_lan_hmc:
	kfree(pf->qp_pile);
err_sw_init:
err_adminq_setup:
err_pf_reset:
	iounmap(hw->hw_addr);
err_ioremap:
	kfree(pf);
err_pf_alloc:
	pci_disable_pcie_error_reporting(pdev);
	pci_release_mem_regions(pdev);
err_pci_reg:
err_dma:
	pci_disable_device(pdev);
	return err;
}

Project: linux
File: i40e_main.c

u32 i40e_get_current_atr_cnt(struct i40e_pf *pf)
{
	return i40e_get_current_fd_count(pf) - pf->fdir_pf_active_filters;
}

Project: linux
File: i40e_main.c

struct i40e_new_mac_filter *i40e_next_filter(struct i40e_new_mac_filter *next)
{
	hlist_for_each_entry_continue(next, hlist) {
		if (!is_broadcast_ether_addr(next->f->macaddr))
			return next;
	}

	return NULL;
}

Project: linux
File: i40e_main.c

static int i40e_vsi_control_rx(struct i40e_vsi *vsi, bool enable)
{
	struct i40e_pf *pf = vsi->back;
	int i, pf_q, ret = 0;

	pf_q = vsi->base_queue;
	for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
		ret = i40e_control_wait_rx_q(pf, pf_q, enable);
		if (ret) {
			dev_info(&pf->pdev->dev,
				 "VSI seid %d Rx ring %d %sable timeout\n",
				 vsi->seid, pf_q, (enable ? "en" : "dis"));
			break;
		}
	}

	/* Due to HW errata, on Rx disable only, the register can indicate done
	 * before it really is. Needs 50ms to be sure
	 */
	if (!enable)
		mdelay(50);

	return ret;
}

Project: linux
File: i40e_main.c

int i40e_vsi_add_pvid(struct i40e_vsi *vsi, u16 vid)
{
	struct i40e_vsi_context ctxt;
	i40e_status ret;

	vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
	vsi->info.pvid = cpu_to_le16(vid);
	vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_TAGGED |
				    I40E_AQ_VSI_PVLAN_INSERT_PVID |
				    I40E_AQ_VSI_PVLAN_EMOD_STR;

	ctxt.seid = vsi->seid;
	ctxt.info = vsi->info;
	ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
	if (ret) {
		dev_info(&vsi->back->pdev->dev,
			 "add pvid failed, err %s aq_err %s\n",
			 i40e_stat_str(&vsi->back->hw, ret),
			 i40e_aq_str(&vsi->back->hw,
				     vsi->back->hw.aq.asq_last_status));
		return -ENOENT;
	}

	return 0;
}

Project: linux
File: i40e_main.c

static int i40e_sw_init(struct i40e_pf *pf)
{
	int err = 0;
	int size;

	/* Set default capability flags */
	pf->flags = I40E_FLAG_RX_CSUM_ENABLED |
		    I40E_FLAG_MSI_ENABLED     |
		    I40E_FLAG_MSIX_ENABLED;

	/* Set default ITR */
	pf->rx_itr_default = I40E_ITR_RX_DEF;
	pf->tx_itr_default = I40E_ITR_TX_DEF;

	/* Depending on PF configurations, it is possible that the RSS
	 * maximum might end up larger than the available queues
	 */
	pf->rss_size_max = BIT(pf->hw.func_caps.rss_table_entry_width);
	pf->alloc_rss_size = 1;
	pf->rss_table_size = pf->hw.func_caps.rss_table_size;
	pf->rss_size_max = min_t(int, pf->rss_size_max,
				 pf->hw.func_caps.num_tx_qp);
	if (pf->hw.func_caps.rss) {
		pf->flags |= I40E_FLAG_RSS_ENABLED;
		pf->alloc_rss_size = min_t(int, pf->rss_size_max,
					   num_online_cpus());
	}

	/* MFP mode enabled */
	if (pf->hw.func_caps.npar_enable || pf->hw.func_caps.flex10_enable) {
		pf->flags |= I40E_FLAG_MFP_ENABLED;
		dev_info(&pf->pdev->dev, "MFP mode Enabled\n");
		if (i40e_get_partition_bw_setting(pf)) {
			dev_warn(&pf->pdev->dev,
				 "Could not get partition bw settings\n");
		} else {
			dev_info(&pf->pdev->dev,
				 "Partition BW Min = %8.8x, Max = %8.8x\n",
				 pf->min_bw, pf->max_bw);

			/* nudge the Tx scheduler */
			i40e_set_partition_bw_setting(pf);
		}
	}

	if ((pf->hw.func_caps.fd_filters_guaranteed > 0) ||
	    (pf->hw.func_caps.fd_filters_best_effort > 0)) {
		pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
		pf->atr_sample_rate = I40E_DEFAULT_ATR_SAMPLE_RATE;
		if (pf->flags & I40E_FLAG_MFP_ENABLED &&
		    pf->hw.num_partitions > 1)
			dev_info(&pf->pdev->dev,
				 "Flow Director Sideband mode Disabled in MFP mode\n");
		else
			pf->flags |= I40E_FLAG_FD_SB_ENABLED;
		pf->fdir_pf_filter_count =
				 pf->hw.func_caps.fd_filters_guaranteed;
		pf->hw.fdir_shared_filter_count =
				 pf->hw.func_caps.fd_filters_best_effort;
	}

	if (pf->hw.mac.type == I40E_MAC_X722) {
		pf->hw_features |= (I40E_HW_RSS_AQ_CAPABLE |
				    I40E_HW_128_QP_RSS_CAPABLE |
				    I40E_HW_ATR_EVICT_CAPABLE |
				    I40E_HW_WB_ON_ITR_CAPABLE |
				    I40E_HW_MULTIPLE_TCP_UDP_RSS_PCTYPE |
				    I40E_HW_NO_PCI_LINK_CHECK |
				    I40E_HW_USE_SET_LLDP_MIB |
				    I40E_HW_GENEVE_OFFLOAD_CAPABLE |
				    I40E_HW_PTP_L4_CAPABLE |
				    I40E_HW_WOL_MC_MAGIC_PKT_WAKE |
				    I40E_HW_OUTER_UDP_CSUM_CAPABLE);

#define I40E_FDEVICT_PCTYPE_DEFAULT 0xc03
		if (rd32(&pf->hw, I40E_GLQF_FDEVICTENA(1)) !=
		    I40E_FDEVICT_PCTYPE_DEFAULT) {
			dev_warn(&pf->pdev->dev,
				 "FD EVICT PCTYPES are not right, disable FD HW EVICT\n");
			pf->hw_features &= ~I40E_HW_ATR_EVICT_CAPABLE;
		}
	} else if ((pf->hw.aq.api_maj_ver > 1) ||
		   ((pf->hw.aq.api_maj_ver == 1) &&
		    (pf->hw.aq.api_min_ver > 4))) {
		/* Supported in FW API version higher than 1.4 */
		pf->hw_features |= I40E_HW_GENEVE_OFFLOAD_CAPABLE;
	}

	/* Enable HW ATR eviction if possible */
	if (pf->hw_features & I40E_HW_ATR_EVICT_CAPABLE)
		pf->flags |= I40E_FLAG_HW_ATR_EVICT_ENABLED;

	if ((pf->hw.mac.type == I40E_MAC_XL710) &&
	    (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
	    (pf->hw.aq.fw_maj_ver < 4))) {
		pf->hw_features |= I40E_HW_RESTART_AUTONEG;
		/* No DCB support  for FW < v4.33 */
		pf->hw_features |= I40E_HW_NO_DCB_SUPPORT;
	}

	/* Disable FW LLDP if FW < v4.3 */
	if ((pf->hw.mac.type == I40E_MAC_XL710) &&
	    (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 3)) ||
	    (pf->hw.aq.fw_maj_ver < 4)))
		pf->hw_features |= I40E_HW_STOP_FW_LLDP;

	/* Use the FW Set LLDP MIB API if FW > v4.40 */
	if ((pf->hw.mac.type == I40E_MAC_XL710) &&
	    (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver >= 40)) ||
	    (pf->hw.aq.fw_maj_ver >= 5)))
		pf->hw_features |= I40E_HW_USE_SET_LLDP_MIB;

	/* Enable PTP L4 if FW > v6.0 */
	if (pf->hw.mac.type == I40E_MAC_XL710 &&
	    pf->hw.aq.fw_maj_ver >= 6)
		pf->hw_features |= I40E_HW_PTP_L4_CAPABLE;

	if (pf->hw.func_caps.vmdq && num_online_cpus() != 1) {
		pf->num_vmdq_vsis = I40E_DEFAULT_NUM_VMDQ_VSI;
		pf->flags |= I40E_FLAG_VMDQ_ENABLED;
		pf->num_vmdq_qps = i40e_default_queues_per_vmdq(pf);
	}

	if (pf->hw.func_caps.iwarp && num_online_cpus() != 1) {
		pf->flags |= I40E_FLAG_IWARP_ENABLED;
		/* IWARP needs one extra vector for CQP just like MISC.*/
		pf->num_iwarp_msix = (int)num_online_cpus() + 1;
	}
	/* Stopping FW LLDP engine is supported on XL710 and X722
	 * starting from FW versions determined in i40e_init_adminq.
	 * Stopping the FW LLDP engine is not supported on XL710
	 * if NPAR is functioning so unset this hw flag in this case.
	 */
	if (pf->hw.mac.type == I40E_MAC_XL710 &&
	    pf->hw.func_caps.npar_enable &&
	    (pf->hw.flags & I40E_HW_FLAG_FW_LLDP_STOPPABLE))
		pf->hw.flags &= ~I40E_HW_FLAG_FW_LLDP_STOPPABLE;

#ifdef CONFIG_PCI_IOV
	if (pf->hw.func_caps.num_vfs && pf->hw.partition_id == 1) {
		pf->num_vf_qps = I40E_DEFAULT_QUEUES_PER_VF;
		pf->flags |= I40E_FLAG_SRIOV_ENABLED;
		pf->num_req_vfs = min_t(int,
					pf->hw.func_caps.num_vfs,
					I40E_MAX_VF_COUNT);
	}
#endif /* CONFIG_PCI_IOV */
	pf->eeprom_version = 0xDEAD;
	pf->lan_veb = I40E_NO_VEB;
	pf->lan_vsi = I40E_NO_VSI;

	/* By default FW has this off for performance reasons */
	pf->flags &= ~I40E_FLAG_VEB_STATS_ENABLED;

	/* set up queue assignment tracking */
	size = sizeof(struct i40e_lump_tracking)
		+ (sizeof(u16) * pf->hw.func_caps.num_tx_qp);
	pf->qp_pile = kzalloc(size, GFP_KERNEL);
	if (!pf->qp_pile) {
		err = -ENOMEM;
		goto sw_init_done;
	}
	pf->qp_pile->num_entries = pf->hw.func_caps.num_tx_qp;
	pf->qp_pile->search_hint = 0;

	pf->tx_timeout_recovery_level = 1;

	mutex_init(&pf->switch_mutex);

sw_init_done:
	return err;
}

Project: linux
File: i40e_main.c

int i40e_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
{
	struct i40e_netdev_priv *np = netdev_priv(netdev);
	struct i40e_pf *pf = np->vsi->back;

	switch (cmd) {
	case SIOCGHWTSTAMP:
		return i40e_ptp_get_ts_config(pf, ifr);
	case SIOCSHWTSTAMP:
		return i40e_ptp_set_ts_config(pf, ifr);
	default:
		return -EOPNOTSUPP;
	}
}

Project: linux
File: i40e_main.c

static int i40e_vsi_configure_tx(struct i40e_vsi *vsi)
{
	int err = 0;
	u16 i;

	for (i = 0; (i < vsi->num_queue_pairs) && !err; i++)
		err = i40e_configure_tx_ring(vsi->tx_rings[i]);

	if (err || !i40e_enabled_xdp_vsi(vsi))
		return err;

	for (i = 0; (i < vsi->num_queue_pairs) && !err; i++)
		err = i40e_configure_tx_ring(vsi->xdp_rings[i]);

	return err;
}

Project: linux
File: i40e_main.c

struct i40e_vsi *i40e_find_vsi_from_id(struct i40e_pf *pf, u16 id)
{
	int i;

	for (i = 0; i < pf->num_alloc_vsi; i++)
		if (pf->vsi[i] && (pf->vsi[i]->id == id))
			return pf->vsi[i];

	return NULL;
}

Project: linux
File: i40e_main.c

static i40e_status i40e_add_macvlan_filter(struct i40e_hw *hw, u16 seid,
					   const u8 *macaddr, int *aq_err)
{
	struct i40e_aqc_add_macvlan_element_data element;
	i40e_status status;
	u16 cmd_flags = 0;

	ether_addr_copy(element.mac_addr, macaddr);
	element.vlan_tag = 0;
	element.queue_number = 0;
	element.match_method = I40E_AQC_MM_ERR_NO_RES;
	cmd_flags |= I40E_AQC_MACVLAN_ADD_PERFECT_MATCH;
	element.flags = cpu_to_le16(cmd_flags);
	status = i40e_aq_add_macvlan(hw, seid, &element, 1, NULL);
	*aq_err = hw->aq.asq_last_status;

	return status;
}

Project: linux
File: i40e_main.c

static void i40e_tx_timeout(struct net_device *netdev)
{
	struct i40e_netdev_priv *np = netdev_priv(netdev);
	struct i40e_vsi *vsi = np->vsi;
	struct i40e_pf *pf = vsi->back;
	struct i40e_ring *tx_ring = NULL;
	unsigned int i, hung_queue = 0;
	u32 head, val;

	pf->tx_timeout_count++;

	/* find the stopped queue the same way the stack does */
	for (i = 0; i < netdev->num_tx_queues; i++) {
		struct netdev_queue *q;
		unsigned long trans_start;

		q = netdev_get_tx_queue(netdev, i);
		trans_start = q->trans_start;
		if (netif_xmit_stopped(q) &&
		    time_after(jiffies,
			       (trans_start + netdev->watchdog_timeo))) {
			hung_queue = i;
			break;
		}
	}

	if (i == netdev->num_tx_queues) {
		netdev_info(netdev, "tx_timeout: no netdev hung queue found\n");
	} else {
		/* now that we have an index, find the tx_ring struct */
		for (i = 0; i < vsi->num_queue_pairs; i++) {
			if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc) {
				if (hung_queue ==
				    vsi->tx_rings[i]->queue_index) {
					tx_ring = vsi->tx_rings[i];
					break;
				}
			}
		}
	}

	if (time_after(jiffies, (pf->tx_timeout_last_recovery + HZ*20)))
		pf->tx_timeout_recovery_level = 1;  /* reset after some time */
	else if (time_before(jiffies,
		      (pf->tx_timeout_last_recovery + netdev->watchdog_timeo)))
		return;   /* don't do any new action before the next timeout */

	/* don't kick off another recovery if one is already pending */
	if (test_and_set_bit(__I40E_TIMEOUT_RECOVERY_PENDING, pf->state))
		return;

	if (tx_ring) {
		head = i40e_get_head(tx_ring);
		/* Read interrupt register */
		if (pf->flags & I40E_FLAG_MSIX_ENABLED)
			val = rd32(&pf->hw,
			     I40E_PFINT_DYN_CTLN(tx_ring->q_vector->v_idx +
						tx_ring->vsi->base_vector - 1));
		else
			val = rd32(&pf->hw, I40E_PFINT_DYN_CTL0);

		netdev_info(netdev, "tx_timeout: VSI_seid: %d, Q %d, NTC: 0x%x, HWB: 0x%x, NTU: 0x%x, TAIL: 0x%x, INT: 0x%x\n",
			    vsi->seid, hung_queue, tx_ring->next_to_clean,
			    head, tx_ring->next_to_use,
			    readl(tx_ring->tail), val);
	}

	pf->tx_timeout_last_recovery = jiffies;
	netdev_info(netdev, "tx_timeout recovery level %d, hung_queue %d\n",
		    pf->tx_timeout_recovery_level, hung_queue);

	switch (pf->tx_timeout_recovery_level) {
	case 1:
		set_bit(__I40E_PF_RESET_REQUESTED, pf->state);
		break;
	case 2:
		set_bit(__I40E_CORE_RESET_REQUESTED, pf->state);
		break;
	case 3:
		set_bit(__I40E_GLOBAL_RESET_REQUESTED, pf->state);
		break;
	default:
		netdev_err(netdev, "tx_timeout recovery unsuccessful\n");
		break;
	}

	i40e_service_event_schedule(pf);
	pf->tx_timeout_recovery_level++;
}

Project: linux
File: i40e_main.c

static void i40e_undo_add_filter_entries(struct i40e_vsi *vsi,
					 struct hlist_head *from)
{
	struct i40e_new_mac_filter *new;
	struct hlist_node *h;

	hlist_for_each_entry_safe(new, h, from, hlist) {
		/* We can simply free the wrapper structure */
		hlist_del(&new->hlist);
		kfree(new);
	}
}

Project: linux
File: i40e_main.c

static void i40e_delete_invalid_filter(struct i40e_pf *pf,
				       struct i40e_fdir_filter *filter)
{
	/* Update counters */
	pf->fdir_pf_active_filters--;
	pf->fd_inv = 0;

	switch (filter->flow_type) {
	case TCP_V4_FLOW:
		pf->fd_tcp4_filter_cnt--;
		break;
	case UDP_V4_FLOW:
		pf->fd_udp4_filter_cnt--;
		break;
	case SCTP_V4_FLOW:
		pf->fd_sctp4_filter_cnt--;
		break;
	case IP_USER_FLOW:
		switch (filter->ip4_proto) {
		case IPPROTO_TCP:
			pf->fd_tcp4_filter_cnt--;
			break;
		case IPPROTO_UDP:
			pf->fd_udp4_filter_cnt--;
			break;
		case IPPROTO_SCTP:
			pf->fd_sctp4_filter_cnt--;
			break;
		case IPPROTO_IP:
			pf->fd_ip4_filter_cnt--;
			break;
		}
		break;
	}

	/* Remove the filter from the list and free memory */
	hlist_del(&filter->fdir_node);
	kfree(filter);
}

Project: linux
File: i40e_main.c

static int i40e_vsi_configure_rx(struct i40e_vsi *vsi)
{
	int err = 0;
	u16 i;

	if (!vsi->netdev || (vsi->back->flags & I40E_FLAG_LEGACY_RX)) {
		vsi->max_frame = I40E_MAX_RXBUFFER;
		vsi->rx_buf_len = I40E_RXBUFFER_2048;
#if (PAGE_SIZE < 8192)
	} else if (!I40E_2K_TOO_SMALL_WITH_PADDING &&
		   (vsi->netdev->mtu <= ETH_DATA_LEN)) {
		vsi->max_frame = I40E_RXBUFFER_1536 - NET_IP_ALIGN;
		vsi->rx_buf_len = I40E_RXBUFFER_1536 - NET_IP_ALIGN;
#endif
	} else {
		vsi->max_frame = I40E_MAX_RXBUFFER;
		vsi->rx_buf_len = (PAGE_SIZE < 8192) ? I40E_RXBUFFER_3072 :
						       I40E_RXBUFFER_2048;
	}

	/* set up individual rings */
	for (i = 0; i < vsi->num_queue_pairs && !err; i++)
		err = i40e_configure_rx_ring(vsi->rx_rings[i]);

	return err;
}

Project: linux
File: i40e_main.c

static int i40e_setup_tc_cls_flower(struct i40e_netdev_priv *np,
				    struct flow_cls_offload *cls_flower)
{
	struct i40e_vsi *vsi = np->vsi;

	switch (cls_flower->command) {
	case FLOW_CLS_REPLACE:
		return i40e_configure_clsflower(vsi, cls_flower);
	case FLOW_CLS_DESTROY:
		return i40e_delete_clsflower(vsi, cls_flower);
	case FLOW_CLS_STATS:
		return -EOPNOTSUPP;
	default:
		return -EOPNOTSUPP;
	}
}

Project: linux
File: i40e_main.c

i40e_set_cld_element(struct i40e_cloud_filter *filter,
		     struct i40e_aqc_cloud_filters_element_data *cld)
{
	int i, j;
	u32 ipa;

	memset(cld, 0, sizeof(*cld));
	ether_addr_copy(cld->outer_mac, filter->dst_mac);
	ether_addr_copy(cld->inner_mac, filter->src_mac);

	if (filter->n_proto != ETH_P_IP && filter->n_proto != ETH_P_IPV6)
		return;

	if (filter->n_proto == ETH_P_IPV6) {
#define IPV6_MAX_INDEX	(ARRAY_SIZE(filter->dst_ipv6) - 1)
		for (i = 0, j = 0; i < ARRAY_SIZE(filter->dst_ipv6);
		     i++, j += 2) {
			ipa = be32_to_cpu(filter->dst_ipv6[IPV6_MAX_INDEX - i]);
			ipa = cpu_to_le32(ipa);
			memcpy(&cld->ipaddr.raw_v6.data[j], &ipa, sizeof(ipa));
		}
	} else {
		ipa = be32_to_cpu(filter->dst_ipv4);
		memcpy(&cld->ipaddr.v4.data, &ipa, sizeof(ipa));
	}

	cld->inner_vlan = cpu_to_le16(ntohs(filter->vlan_id));

	/* tenant_id is not supported by FW now, once the support is enabled
	 * fill the cld->tenant_id with cpu_to_le32(filter->tenant_id)
	 */
	if (filter->tenant_id)
		return;
}

Project: linux
File: i40e_main.c

static void i40e_remove_queue_channels(struct i40e_vsi *vsi)
{
	enum i40e_admin_queue_err last_aq_status;
	struct i40e_cloud_filter *cfilter;
	struct i40e_channel *ch, *ch_tmp;
	struct i40e_pf *pf = vsi->back;
	struct hlist_node *node;
	int ret, i;

	/* Reset rss size that was stored when reconfiguring rss for
	 * channel VSIs with non-power-of-2 queue count.
	 */
	vsi->current_rss_size = 0;

	/* perform cleanup for channels if they exist */
	if (list_empty(&vsi->ch_list))
		return;

	list_for_each_entry_safe(ch, ch_tmp, &vsi->ch_list, list) {
		struct i40e_vsi *p_vsi;

		list_del(&ch->list);
		p_vsi = ch->parent_vsi;
		if (!p_vsi || !ch->initialized) {
			kfree(ch);
			continue;
		}
		/* Reset queue contexts */
		for (i = 0; i < ch->num_queue_pairs; i++) {
			struct i40e_ring *tx_ring, *rx_ring;
			u16 pf_q;

			pf_q = ch->base_queue + i;
			tx_ring = vsi->tx_rings[pf_q];
			tx_ring->ch = NULL;

			rx_ring = vsi->rx_rings[pf_q];
			rx_ring->ch = NULL;
		}

		/* Reset BW configured for this VSI via mqprio */
		ret = i40e_set_bw_limit(vsi, ch->seid, 0);
		if (ret)
			dev_info(&vsi->back->pdev->dev,
				 "Failed to reset tx rate for ch->seid %u\n",
				 ch->seid);

		/* delete cloud filters associated with this channel */
		hlist_for_each_entry_safe(cfilter, node,
					  &pf->cloud_filter_list, cloud_node) {
			if (cfilter->seid != ch->seid)
				continue;

			hash_del(&cfilter->cloud_node);
			if (cfilter->dst_port)
				ret = i40e_add_del_cloud_filter_big_buf(vsi,
									cfilter,
									false);
			else
				ret = i40e_add_del_cloud_filter(vsi, cfilter,
								false);
			last_aq_status = pf->hw.aq.asq_last_status;
			if (ret)
				dev_info(&pf->pdev->dev,
					 "Failed to delete cloud filter, err %s aq_err %s\n",
					 i40e_stat_str(&pf->hw, ret),
					 i40e_aq_str(&pf->hw, last_aq_status));
			kfree(cfilter);
		}

		/* delete VSI from FW */
		ret = i40e_aq_delete_element(&vsi->back->hw, ch->seid,
					     NULL);
		if (ret)
			dev_err(&vsi->back->pdev->dev,
				"unable to remove channel (%d) for parent VSI(%d)\n",
				ch->seid, p_vsi->seid);
		kfree(ch);
	}
	INIT_LIST_HEAD(&vsi->ch_list);
}

Project: linux
File: i40e_main.c

i40e_status i40e_set_partition_bw_setting(struct i40e_pf *pf)
{
	struct i40e_aqc_configure_partition_bw_data bw_data;
	i40e_status status;

	/* Set the valid bit for this PF */
	bw_data.pf_valid_bits = cpu_to_le16(BIT(pf->hw.pf_id));
	bw_data.max_bw[pf->hw.pf_id] = pf->max_bw & I40E_ALT_BW_VALUE_MASK;
	bw_data.min_bw[pf->hw.pf_id] = pf->min_bw & I40E_ALT_BW_VALUE_MASK;

	/* Set the new bandwidths */
	status = i40e_aq_configure_partition_bw(&pf->hw, &bw_data, NULL);

	return status;
}

Project: linux
File: i40e_main.c

static int __init i40e_init_module(void)
{
	pr_info("%s: %s - version %s\n", i40e_driver_name,
		i40e_driver_string, i40e_driver_version_str);
	pr_info("%s: %s\n", i40e_driver_name, i40e_copyright);

	/* There is no need to throttle the number of active tasks because
	 * each device limits its own task using a state bit for scheduling
	 * the service task, and the device tasks do not interfere with each
	 * other, so we don't set a max task limit. We must set WQ_MEM_RECLAIM
	 * since we need to be able to guarantee forward progress even under
	 * memory pressure.
	 */
	i40e_wq = alloc_workqueue("%s", WQ_MEM_RECLAIM, 0, i40e_driver_name);
	if (!i40e_wq) {
		pr_err("%s: Failed to create workqueue\n", i40e_driver_name);
		return -ENOMEM;
	}

	i40e_dbg_init();
	return pci_register_driver(&i40e_driver);
}

Project: linux
File: i40e_main.c

static int i40e_set_num_rings_in_vsi(struct i40e_vsi *vsi)
{
	struct i40e_pf *pf = vsi->back;

	switch (vsi->type) {
	case I40E_VSI_MAIN:
		vsi->alloc_queue_pairs = pf->num_lan_qps;
		if (!vsi->num_tx_desc)
			vsi->num_tx_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
						 I40E_REQ_DESCRIPTOR_MULTIPLE);
		if (!vsi->num_rx_desc)
			vsi->num_rx_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
						 I40E_REQ_DESCRIPTOR_MULTIPLE);
		if (pf->flags & I40E_FLAG_MSIX_ENABLED)
			vsi->num_q_vectors = pf->num_lan_msix;
		else
			vsi->num_q_vectors = 1;

		break;

	case I40E_VSI_FDIR:
		vsi->alloc_queue_pairs = 1;
		vsi->num_tx_desc = ALIGN(I40E_FDIR_RING_COUNT,
					 I40E_REQ_DESCRIPTOR_MULTIPLE);
		vsi->num_rx_desc = ALIGN(I40E_FDIR_RING_COUNT,
					 I40E_REQ_DESCRIPTOR_MULTIPLE);
		vsi->num_q_vectors = pf->num_fdsb_msix;
		break;

	case I40E_VSI_VMDQ2:
		vsi->alloc_queue_pairs = pf->num_vmdq_qps;
		if (!vsi->num_tx_desc)
			vsi->num_tx_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
						 I40E_REQ_DESCRIPTOR_MULTIPLE);
		if (!vsi->num_rx_desc)
			vsi->num_rx_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
						 I40E_REQ_DESCRIPTOR_MULTIPLE);
		vsi->num_q_vectors = pf->num_vmdq_msix;
		break;

	case I40E_VSI_SRIOV:
		vsi->alloc_queue_pairs = pf->num_vf_qps;
		if (!vsi->num_tx_desc)
			vsi->num_tx_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
						 I40E_REQ_DESCRIPTOR_MULTIPLE);
		if (!vsi->num_rx_desc)
			vsi->num_rx_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
						 I40E_REQ_DESCRIPTOR_MULTIPLE);
		break;

	default:
		WARN_ON(1);
		return -ENODATA;
	}

	return 0;
}

Project: linux
File: i40e_main.c

static void i40e_fwd_del(struct net_device *netdev, void *vdev)
{
	struct i40e_netdev_priv *np = netdev_priv(netdev);
	struct i40e_fwd_adapter *fwd = vdev;
	struct i40e_channel *ch, *ch_tmp;
	struct i40e_vsi *vsi = np->vsi;
	struct i40e_pf *pf = vsi->back;
	struct i40e_hw *hw = &pf->hw;
	int aq_err, ret = 0;

	/* Find the channel associated with the macvlan and del mac filter */
	list_for_each_entry_safe(ch, ch_tmp, &vsi->macvlan_list, list) {
		if (i40e_is_channel_macvlan(ch) &&
		    ether_addr_equal(i40e_channel_mac(ch),
				     fwd->netdev->dev_addr)) {
			ret = i40e_del_macvlan_filter(hw, ch->seid,
						      i40e_channel_mac(ch),
						      &aq_err);
			if (!ret) {
				/* Reset queue contexts */
				i40e_reset_ch_rings(vsi, ch);
				clear_bit(ch->fwd->bit_no, vsi->fwd_bitmask);
				netdev_unbind_sb_channel(netdev, fwd->netdev);
				netdev_set_sb_channel(fwd->netdev, 0);
				kfree(ch->fwd);
				ch->fwd = NULL;
			} else {
				dev_info(&pf->pdev->dev,
					 "Error deleting mac filter on macvlan err %s, aq_err %s\n",
					  i40e_stat_str(hw, ret),
					  i40e_aq_str(hw, aq_err));
			}
			break;
		}
	}
}

Project: linux
File: i40e_main.c

static int i40e_vsi_get_bw_info(struct i40e_vsi *vsi)
{
	struct i40e_aqc_query_vsi_ets_sla_config_resp bw_ets_config = {0};
	struct i40e_aqc_query_vsi_bw_config_resp bw_config = {0};
	struct i40e_pf *pf = vsi->back;
	struct i40e_hw *hw = &pf->hw;
	i40e_status ret;
	u32 tc_bw_max;
	int i;

	/* Get the VSI level BW configuration */
	ret = i40e_aq_query_vsi_bw_config(hw, vsi->seid, &bw_config, NULL);
	if (ret) {
		dev_info(&pf->pdev->dev,
			 "couldn't get PF vsi bw config, err %s aq_err %s\n",
			 i40e_stat_str(&pf->hw, ret),
			 i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
		return -EINVAL;
	}

	/* Get the VSI level BW configuration per TC */
	ret = i40e_aq_query_vsi_ets_sla_config(hw, vsi->seid, &bw_ets_config,
					       NULL);
	if (ret) {
		dev_info(&pf->pdev->dev,
			 "couldn't get PF vsi ets bw config, err %s aq_err %s\n",
			 i40e_stat_str(&pf->hw, ret),
			 i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
		return -EINVAL;
	}

	if (bw_config.tc_valid_bits != bw_ets_config.tc_valid_bits) {
		dev_info(&pf->pdev->dev,
			 "Enabled TCs mismatch from querying VSI BW info 0x%08x 0x%08x\n",
			 bw_config.tc_valid_bits,
			 bw_ets_config.tc_valid_bits);
		/* Still continuing */
	}

	vsi->bw_limit = le16_to_cpu(bw_config.port_bw_limit);
	vsi->bw_max_quanta = bw_config.max_bw;
	tc_bw_max = le16_to_cpu(bw_ets_config.tc_bw_max[0]) |
		    (le16_to_cpu(bw_ets_config.tc_bw_max[1]) << 16);
	for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
		vsi->bw_ets_share_credits[i] = bw_ets_config.share_credits[i];
		vsi->bw_ets_limit_credits[i] =
					le16_to_cpu(bw_ets_config.credits[i]);
		/* 3 bits out of 4 for each TC */
		vsi->bw_ets_max_quanta[i] = (u8)((tc_bw_max >> (i*4)) & 0x7);
	}

	return 0;
}

Project: linux
File: i40e_main.c

i40e_status i40e_get_partition_bw_setting(struct i40e_pf *pf)
{
	i40e_status status;
	bool min_valid, max_valid;
	u32 max_bw, min_bw;

	status = i40e_read_bw_from_alt_ram(&pf->hw, &max_bw, &min_bw,
					   &min_valid, &max_valid);

	if (!status) {
		if (min_valid)
			pf->min_bw = min_bw;
		if (max_valid)
			pf->max_bw = max_bw;
	}

	return status;
}

Project: linux
File: i40e_main.c

int i40e_get_rss(struct i40e_vsi *vsi, u8 *seed, u8 *lut, u16 lut_size)
{
	struct i40e_pf *pf = vsi->back;

	if (pf->hw_features & I40E_HW_RSS_AQ_CAPABLE)
		return i40e_get_rss_aq(vsi, seed, lut, lut_size);
	else
		return i40e_get_rss_reg(vsi, seed, lut, lut_size);
}

Project: linux
File: i40e_main.c

static u8 i40e_dcb_get_num_tc(struct i40e_dcbx_config *dcbcfg)
{
	int i, tc_unused = 0;
	u8 num_tc = 0;
	u8 ret = 0;

	/* Scan the ETS Config Priority Table to find
	 * traffic class enabled for a given priority
	 * and create a bitmask of enabled TCs
	 */
	for (i = 0; i < I40E_MAX_USER_PRIORITY; i++)
		num_tc |= BIT(dcbcfg->etscfg.prioritytable[i]);

	/* Now scan the bitmask to check for
	 * contiguous TCs starting with TC0
	 */
	for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
		if (num_tc & BIT(i)) {
			if (!tc_unused) {
				ret++;
			} else {
				pr_err("Non-contiguous TC - Disabling DCB\n");
				return 1;
			}
		} else {
			tc_unused = 1;
		}
	}

	/* There is always at least TC0 */
	if (!ret)
		ret = 1;

	return ret;
}

Project: linux
File: i40e_main.c

static int i40e_vsi_configure(struct i40e_vsi *vsi)
{
	int err;

	i40e_set_vsi_rx_mode(vsi);
	i40e_restore_vlan(vsi);
	i40e_vsi_config_dcb_rings(vsi);
	err = i40e_vsi_configure_tx(vsi);
	if (!err)
		err = i40e_vsi_configure_rx(vsi);

	return err;
}

Project: linux
File: i40e_main.c

static int i40e_handle_tclass(struct i40e_vsi *vsi, u32 tc,
			      struct i40e_cloud_filter *filter)
{
	struct i40e_channel *ch, *ch_tmp;

	/* direct to a traffic class on the same device */
	if (tc == 0) {
		filter->seid = vsi->seid;
		return 0;
	} else if (vsi->tc_config.enabled_tc & BIT(tc)) {
		if (!filter->dst_port) {
			dev_err(&vsi->back->pdev->dev,
				"Specify destination port to direct to traffic class that is not default\n");
			return -EINVAL;
		}
		if (list_empty(&vsi->ch_list))
			return -EINVAL;
		list_for_each_entry_safe(ch, ch_tmp, &vsi->ch_list,
					 list) {
			if (ch->seid == vsi->tc_seid_map[tc])
				filter->seid = ch->seid;
		}
		return 0;
	}
	dev_err(&vsi->back->pdev->dev, "TC is not enabled\n");
	return -EINVAL;
}

Project: linux
File: i40e_main.c

static int i40e_setup_misc_vector_for_recovery_mode(struct i40e_pf *pf)
{
	int err;

	if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
		err = i40e_setup_misc_vector(pf);

		if (err) {
			dev_info(&pf->pdev->dev,
				 "MSI-X misc vector request failed, error %d\n",
				 err);
			return err;
		}
	} else {
		u32 flags = pf->flags & I40E_FLAG_MSI_ENABLED ? 0 : IRQF_SHARED;

		err = request_irq(pf->pdev->irq, i40e_intr, flags,
				  pf->int_name, pf);

		if (err) {
			dev_info(&pf->pdev->dev,
				 "MSI/legacy misc vector request failed, error %d\n",
				 err);
			return err;
		}
		i40e_enable_misc_int_causes(pf);
		i40e_irq_dynamic_enable_icr0(pf);
	}

	return 0;
}

Project: linux
File: i40e_main.c

int i40e_allocate_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem,
			    u64 size, u32 alignment)
{
	struct i40e_pf *pf = (struct i40e_pf *)hw->back;

	mem->size = ALIGN(size, alignment);
	mem->va = dma_alloc_coherent(&pf->pdev->dev, mem->size, &mem->pa,
				     GFP_KERNEL);
	if (!mem->va)
		return -ENOMEM;

	return 0;
}

Project: linux
File: i40e_main.c

int i40e_control_wait_rx_q(struct i40e_pf *pf, int pf_q, bool enable)
{
	int ret = 0;

	i40e_control_rx_q(pf, pf_q, enable);

	/* wait for the change to finish */
	ret = i40e_pf_rxq_wait(pf, pf_q, enable);
	if (ret)
		return ret;

	return ret;
}

Project: linux
File: i40e_main.c

static void i40e_vlan_rx_add_vid_up(struct net_device *netdev,
				    __always_unused __be16 proto, u16 vid)
{
	struct i40e_netdev_priv *np = netdev_priv(netdev);
	struct i40e_vsi *vsi = np->vsi;

	if (vid >= VLAN_N_VID)
		return;
	set_bit(vid, vsi->active_vlans);
}

Project: linux
File: i40e_main.c

static struct xdp_umem *i40e_xsk_umem(struct i40e_ring *ring)
{
	bool xdp_on = i40e_enabled_xdp_vsi(ring->vsi);
	int qid = ring->queue_index;

	if (ring_is_xdp(ring))
		qid -= ring->vsi->alloc_queue_pairs;

	if (!xdp_on || !test_bit(qid, ring->vsi->af_xdp_zc_qps))
		return NULL;

	return xdp_get_umem_from_qid(ring->vsi->netdev, qid);
}

Project: linux
File: i40e_main.c

int i40e_open(struct net_device *netdev)
{
	struct i40e_netdev_priv *np = netdev_priv(netdev);
	struct i40e_vsi *vsi = np->vsi;
	struct i40e_pf *pf = vsi->back;
	int err;

	/* disallow open during test or if eeprom is broken */
	if (test_bit(__I40E_TESTING, pf->state) ||
	    test_bit(__I40E_BAD_EEPROM, pf->state))
		return -EBUSY;

	netif_carrier_off(netdev);

	if (i40e_force_link_state(pf, true))
		return -EAGAIN;

	err = i40e_vsi_open(vsi);
	if (err)
		return err;

	/* configure global TSO hardware offload settings */
	wr32(&pf->hw, I40E_GLLAN_TSOMSK_F, be32_to_cpu(TCP_FLAG_PSH |
						       TCP_FLAG_FIN) >> 16);
	wr32(&pf->hw, I40E_GLLAN_TSOMSK_M, be32_to_cpu(TCP_FLAG_PSH |
						       TCP_FLAG_FIN |
						       TCP_FLAG_CWR) >> 16);
	wr32(&pf->hw, I40E_GLLAN_TSOMSK_L, be32_to_cpu(TCP_FLAG_CWR) >> 16);

	udp_tunnel_get_rx_info(netdev);

	return 0;
}

Project: linux
File: i40e_main.c

static void i40e_del_all_macvlans(struct i40e_vsi *vsi)
{
	struct i40e_channel *ch, *ch_tmp;
	struct i40e_pf *pf = vsi->back;
	struct i40e_hw *hw = &pf->hw;
	int aq_err, ret = 0;

	if (list_empty(&vsi->macvlan_list))
		return;

	list_for_each_entry_safe(ch, ch_tmp, &vsi->macvlan_list, list) {
		if (i40e_is_channel_macvlan(ch)) {
			ret = i40e_del_macvlan_filter(hw, ch->seid,
						      i40e_channel_mac(ch),
						      &aq_err);
			if (!ret) {
				/* Reset queue contexts */
				i40e_reset_ch_rings(vsi, ch);
				clear_bit(ch->fwd->bit_no, vsi->fwd_bitmask);
				netdev_unbind_sb_channel(vsi->netdev,
							 ch->fwd->netdev);
				netdev_set_sb_channel(ch->fwd->netdev, 0);
				kfree(ch->fwd);
				ch->fwd = NULL;
			}
		}
	}
}

Project: linux
File: i40e_main.c

static void i40e_vsi_configure_msix(struct i40e_vsi *vsi)
{
	bool has_xdp = i40e_enabled_xdp_vsi(vsi);
	struct i40e_pf *pf = vsi->back;
	struct i40e_hw *hw = &pf->hw;
	u16 vector;
	int i, q;
	u32 qp;

	/* The interrupt indexing is offset by 1 in the PFINT_ITRn
	 * and PFINT_LNKLSTn registers, e.g.:
	 *   PFINT_ITRn[0..n-1] gets msix-1..msix-n  (qpair interrupts)
	 */
	qp = vsi->base_queue;
	vector = vsi->base_vector;
	for (i = 0; i < vsi->num_q_vectors; i++, vector++) {
		struct i40e_q_vector *q_vector = vsi->q_vectors[i];

		q_vector->rx.next_update = jiffies + 1;
		q_vector->rx.target_itr =
			ITR_TO_REG(vsi->rx_rings[i]->itr_setting);
		wr32(hw, I40E_PFINT_ITRN(I40E_RX_ITR, vector - 1),
		     q_vector->rx.target_itr >> 1);
		q_vector->rx.current_itr = q_vector->rx.target_itr;

		q_vector->tx.next_update = jiffies + 1;
		q_vector->tx.target_itr =
			ITR_TO_REG(vsi->tx_rings[i]->itr_setting);
		wr32(hw, I40E_PFINT_ITRN(I40E_TX_ITR, vector - 1),
		     q_vector->tx.target_itr >> 1);
		q_vector->tx.current_itr = q_vector->tx.target_itr;

		wr32(hw, I40E_PFINT_RATEN(vector - 1),
		     i40e_intrl_usec_to_reg(vsi->int_rate_limit));

		/* Linked list for the queuepairs assigned to this vector */
		wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), qp);
		for (q = 0; q < q_vector->num_ringpairs; q++) {
			u32 nextqp = has_xdp ? qp + vsi->alloc_queue_pairs : qp;
			u32 val;

			val = I40E_QINT_RQCTL_CAUSE_ENA_MASK |
			      (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT) |
			      (vector << I40E_QINT_RQCTL_MSIX_INDX_SHIFT) |
			      (nextqp << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT) |
			      (I40E_QUEUE_TYPE_TX <<
			       I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT);

			wr32(hw, I40E_QINT_RQCTL(qp), val);

			if (has_xdp) {
				val = I40E_QINT_TQCTL_CAUSE_ENA_MASK |
				      (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT) |
				      (vector << I40E_QINT_TQCTL_MSIX_INDX_SHIFT) |
				      (qp << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT) |
				      (I40E_QUEUE_TYPE_TX <<
				       I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);

				wr32(hw, I40E_QINT_TQCTL(nextqp), val);
			}

			val = I40E_QINT_TQCTL_CAUSE_ENA_MASK |
			      (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT) |
			      (vector << I40E_QINT_TQCTL_MSIX_INDX_SHIFT) |
			      ((qp + 1) << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT) |
			      (I40E_QUEUE_TYPE_RX <<
			       I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);

			/* Terminate the linked list */
			if (q == (q_vector->num_ringpairs - 1))
				val |= (I40E_QUEUE_END_OF_LIST <<
					I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);

			wr32(hw, I40E_QINT_TQCTL(qp), val);
			qp++;
		}
	}

	i40e_flush(hw);
}

Project: linux
File: i40e_main.c

static void i40e_get_netdev_stats_struct_tx(struct i40e_ring *ring,
					    struct rtnl_link_stats64 *stats)
{
	u64 bytes, packets;
	unsigned int start;

	do {
		start = u64_stats_fetch_begin_irq(&ring->syncp);
		packets = ring->stats.packets;
		bytes   = ring->stats.bytes;
	} while (u64_stats_fetch_retry_irq(&ring->syncp, start));

	stats->tx_packets += packets;
	stats->tx_bytes   += bytes;
}

Project: linux
File: i40e_main.c

struct i40e_vsi *i40e_vsi_setup(struct i40e_pf *pf, u8 type,
				u16 uplink_seid, u32 param1)
{
	struct i40e_vsi *vsi = NULL;
	struct i40e_veb *veb = NULL;
	u16 alloc_queue_pairs;
	int ret, i;
	int v_idx;

	/* The requested uplink_seid must be either
	 *     - the PF's port seid
	 *              no VEB is needed because this is the PF
	 *              or this is a Flow Director special case VSI
	 *     - seid of an existing VEB
	 *     - seid of a VSI that owns an existing VEB
	 *     - seid of a VSI that doesn't own a VEB
	 *              a new VEB is created and the VSI becomes the owner
	 *     - seid of the PF VSI, which is what creates the first VEB
	 *              this is a special case of the previous
	 *
	 * Find which uplink_seid we were given and create a new VEB if needed
	 */
	for (i = 0; i < I40E_MAX_VEB; i++) {
		if (pf->veb[i] && pf->veb[i]->seid == uplink_seid) {
			veb = pf->veb[i];
			break;
		}
	}

	if (!veb && uplink_seid != pf->mac_seid) {

		for (i = 0; i < pf->num_alloc_vsi; i++) {
			if (pf->vsi[i] && pf->vsi[i]->seid == uplink_seid) {
				vsi = pf->vsi[i];
				break;
			}
		}
		if (!vsi) {
			dev_info(&pf->pdev->dev, "no such uplink_seid %d\n",
				 uplink_seid);
			return NULL;
		}

		if (vsi->uplink_seid == pf->mac_seid)
			veb = i40e_veb_setup(pf, 0, pf->mac_seid, vsi->seid,
					     vsi->tc_config.enabled_tc);
		else if ((vsi->flags & I40E_VSI_FLAG_VEB_OWNER) == 0)
			veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
					     vsi->tc_config.enabled_tc);
		if (veb) {
			if (vsi->seid != pf->vsi[pf->lan_vsi]->seid) {
				dev_info(&vsi->back->pdev->dev,
					 "New VSI creation error, uplink seid of LAN VSI expected.\n");
				return NULL;
			}
			/* We come up by default in VEPA mode if SRIOV is not
			 * already enabled, in which case we can't force VEPA
			 * mode.
			 */
			if (!(pf->flags & I40E_FLAG_VEB_MODE_ENABLED)) {
				veb->bridge_mode = BRIDGE_MODE_VEPA;
				pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
			}
			i40e_config_bridge_mode(veb);
		}
		for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
			if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
				veb = pf->veb[i];
		}
		if (!veb) {
			dev_info(&pf->pdev->dev, "couldn't add VEB\n");
			return NULL;
		}

		vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
		uplink_seid = veb->seid;
	}

	/* get vsi sw struct */
	v_idx = i40e_vsi_mem_alloc(pf, type);
	if (v_idx < 0)
		goto err_alloc;
	vsi = pf->vsi[v_idx];
	if (!vsi)
		goto err_alloc;
	vsi->type = type;
	vsi->veb_idx = (veb ? veb->idx : I40E_NO_VEB);

	if (type == I40E_VSI_MAIN)
		pf->lan_vsi = v_idx;
	else if (type == I40E_VSI_SRIOV)
		vsi->vf_id = param1;
	/* assign it some queues */
	alloc_queue_pairs = vsi->alloc_queue_pairs *
			    (i40e_enabled_xdp_vsi(vsi) ? 2 : 1);

	ret = i40e_get_lump(pf, pf->qp_pile, alloc_queue_pairs, vsi->idx);
	if (ret < 0) {
		dev_info(&pf->pdev->dev,
			 "failed to get tracking for %d queues for VSI %d err=%d\n",
			 alloc_queue_pairs, vsi->seid, ret);
		goto err_vsi;
	}
	vsi->base_queue = ret;

	/* get a VSI from the hardware */
	vsi->uplink_seid = uplink_seid;
	ret = i40e_add_vsi(vsi);
	if (ret)
		goto err_vsi;

	switch (vsi->type) {
	/* setup the netdev if needed */
	case I40E_VSI_MAIN:
	case I40E_VSI_VMDQ2:
		ret = i40e_config_netdev(vsi);
		if (ret)
			goto err_netdev;
		ret = register_netdev(vsi->netdev);
		if (ret)
			goto err_netdev;
		vsi->netdev_registered = true;
		netif_carrier_off(vsi->netdev);
#ifdef CONFIG_I40E_DCB
		/* Setup DCB netlink interface */
		i40e_dcbnl_setup(vsi);
#endif /* CONFIG_I40E_DCB */
		/* fall through */

	case I40E_VSI_FDIR:
		/* set up vectors and rings if needed */
		ret = i40e_vsi_setup_vectors(vsi);
		if (ret)
			goto err_msix;

		ret = i40e_alloc_rings(vsi);
		if (ret)
			goto err_rings;

		/* map all of the rings to the q_vectors */
		i40e_vsi_map_rings_to_vectors(vsi);

		i40e_vsi_reset_stats(vsi);
		break;

	default:
		/* no netdev or rings for the other VSI types */
		break;
	}

	if ((pf->hw_features & I40E_HW_RSS_AQ_CAPABLE) &&
	    (vsi->type == I40E_VSI_VMDQ2)) {
		ret = i40e_vsi_config_rss(vsi);
	}
	return vsi;

err_rings:
	i40e_vsi_free_q_vectors(vsi);
err_msix:
	if (vsi->netdev_registered) {
		vsi->netdev_registered = false;
		unregister_netdev(vsi->netdev);
		free_netdev(vsi->netdev);
		vsi->netdev = NULL;
	}
err_netdev:
	i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
err_vsi:
	i40e_vsi_clear(vsi);
err_alloc:
	return NULL;
}

Project: linux
File: i40e_main.c

static void i40e_vsi_free_irq(struct i40e_vsi *vsi)
{
	struct i40e_pf *pf = vsi->back;
	struct i40e_hw *hw = &pf->hw;
	int base = vsi->base_vector;
	u32 val, qp;
	int i;

	if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
		if (!vsi->q_vectors)
			return;

		if (!vsi->irqs_ready)
			return;

		vsi->irqs_ready = false;
		for (i = 0; i < vsi->num_q_vectors; i++) {
			int irq_num;
			u16 vector;

			vector = i + base;
			irq_num = pf->msix_entries[vector].vector;

			/* free only the irqs that were actually requested */
			if (!vsi->q_vectors[i] ||
			    !vsi->q_vectors[i]->num_ringpairs)
				continue;

			/* clear the affinity notifier in the IRQ descriptor */
			irq_set_affinity_notifier(irq_num, NULL);
			/* remove our suggested affinity mask for this IRQ */
			irq_set_affinity_hint(irq_num, NULL);
			synchronize_irq(irq_num);
			free_irq(irq_num, vsi->q_vectors[i]);

			/* Tear down the interrupt queue link list
			 *
			 * We know that they come in pairs and always
			 * the Rx first, then the Tx.  To clear the
			 * link list, stick the EOL value into the
			 * next_q field of the registers.
			 */
			val = rd32(hw, I40E_PFINT_LNKLSTN(vector - 1));
			qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
				>> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
			val |= I40E_QUEUE_END_OF_LIST
				<< I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
			wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), val);

			while (qp != I40E_QUEUE_END_OF_LIST) {
				u32 next;

				val = rd32(hw, I40E_QINT_RQCTL(qp));

				val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
					 I40E_QINT_RQCTL_MSIX0_INDX_MASK |
					 I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
					 I40E_QINT_RQCTL_INTEVENT_MASK);

				val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
					 I40E_QINT_RQCTL_NEXTQ_INDX_MASK);

				wr32(hw, I40E_QINT_RQCTL(qp), val);

				val = rd32(hw, I40E_QINT_TQCTL(qp));

				next = (val & I40E_QINT_TQCTL_NEXTQ_INDX_MASK)
					>> I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT;

				val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
					 I40E_QINT_TQCTL_MSIX0_INDX_MASK |
					 I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
					 I40E_QINT_TQCTL_INTEVENT_MASK);

				val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
					 I40E_QINT_TQCTL_NEXTQ_INDX_MASK);

				wr32(hw, I40E_QINT_TQCTL(qp), val);
				qp = next;
			}
		}
	} else {
		free_irq(pf->pdev->irq, pf);

		val = rd32(hw, I40E_PFINT_LNKLST0);
		qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
			>> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
		val |= I40E_QUEUE_END_OF_LIST
			<< I40E_PFINT_LNKLST0_FIRSTQ_INDX_SHIFT;
		wr32(hw, I40E_PFINT_LNKLST0, val);

		val = rd32(hw, I40E_QINT_RQCTL(qp));
		val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
			 I40E_QINT_RQCTL_MSIX0_INDX_MASK |
			 I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
			 I40E_QINT_RQCTL_INTEVENT_MASK);

		val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
			I40E_QINT_RQCTL_NEXTQ_INDX_MASK);

		wr32(hw, I40E_QINT_RQCTL(qp), val);

		val = rd32(hw, I40E_QINT_TQCTL(qp));

		val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
			 I40E_QINT_TQCTL_MSIX0_INDX_MASK |
			 I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
			 I40E_QINT_TQCTL_INTEVENT_MASK);

		val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
			I40E_QINT_TQCTL_NEXTQ_INDX_MASK);

		wr32(hw, I40E_QINT_TQCTL(qp), val);
	}
}

Project: linux
File: i40e_main.c

static int i40e_pf_rxq_wait(struct i40e_pf *pf, int pf_q, bool enable)
{
	int i;
	u32 rx_reg;

	for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
		rx_reg = rd32(&pf->hw, I40E_QRX_ENA(pf_q));
		if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
			break;

		usleep_range(10, 20);
	}
	if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
		return -ETIMEDOUT;

	return 0;
}

Project: linux
File: i40e_main.c

static int i40e_set_mac(struct net_device *netdev, void *p)
{
	struct i40e_netdev_priv *np = netdev_priv(netdev);
	struct i40e_vsi *vsi = np->vsi;
	struct i40e_pf *pf = vsi->back;
	struct i40e_hw *hw = &pf->hw;
	struct sockaddr *addr = p;

	if (!is_valid_ether_addr(addr->sa_data))
		return -EADDRNOTAVAIL;

	if (ether_addr_equal(netdev->dev_addr, addr->sa_data)) {
		netdev_info(netdev, "already using mac address %pM\n",
			    addr->sa_data);
		return 0;
	}

	if (test_bit(__I40E_DOWN, pf->state) ||
	    test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state))
		return -EADDRNOTAVAIL;

	if (ether_addr_equal(hw->mac.addr, addr->sa_data))
		netdev_info(netdev, "returning to hw mac address %pM\n",
			    hw->mac.addr);
	else
		netdev_info(netdev, "set new mac address %pM\n", addr->sa_data);

	/* Copy the address first, so that we avoid a possible race with
	 * .set_rx_mode().
	 * - Remove old address from MAC filter
	 * - Copy new address
	 * - Add new address to MAC filter
	 */
	spin_lock_bh(&vsi->mac_filter_hash_lock);
	i40e_del_mac_filter(vsi, netdev->dev_addr);
	ether_addr_copy(netdev->dev_addr, addr->sa_data);
	i40e_add_mac_filter(vsi, netdev->dev_addr);
	spin_unlock_bh(&vsi->mac_filter_hash_lock);

	if (vsi->type == I40E_VSI_MAIN) {
		i40e_status ret;

		ret = i40e_aq_mac_address_write(hw, I40E_AQC_WRITE_TYPE_LAA_WOL,
						addr->sa_data, NULL);
		if (ret)
			netdev_info(netdev, "Ignoring error from firmware on LAA update, status %s, AQ ret %s\n",
				    i40e_stat_str(hw, ret),
				    i40e_aq_str(hw, hw->aq.asq_last_status));
	}

	/* schedule our worker thread which will take care of
	 * applying the new filter changes
	 */
	i40e_service_event_schedule(pf);
	return 0;
}

Project: linux
File: i40e_main.c

static void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
				     struct i40e_vsi_context *ctxt,
				     u8 enabled_tc,
				     bool is_add)
{
	struct i40e_pf *pf = vsi->back;
	u16 sections = 0;
	u8 netdev_tc = 0;
	u16 numtc = 1;
	u16 qcount;
	u8 offset;
	u16 qmap;
	int i;
	u16 num_tc_qps = 0;

	sections = I40E_AQ_VSI_PROP_QUEUE_MAP_VALID;
	offset = 0;

	/* Number of queues per enabled TC */
	num_tc_qps = vsi->alloc_queue_pairs;
	if (enabled_tc && (vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
		/* Find numtc from enabled TC bitmap */
		for (i = 0, numtc = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
			if (enabled_tc & BIT(i)) /* TC is enabled */
				numtc++;
		}
		if (!numtc) {
			dev_warn(&pf->pdev->dev, "DCB is enabled but no TC enabled, forcing TC0\n");
			numtc = 1;
		}
		num_tc_qps = num_tc_qps / numtc;
		num_tc_qps = min_t(int, num_tc_qps,
				   i40e_pf_get_max_q_per_tc(pf));
	}

	vsi->tc_config.numtc = numtc;
	vsi->tc_config.enabled_tc = enabled_tc ? enabled_tc : 1;

	/* Do not allow use more TC queue pairs than MSI-X vectors exist */
	if (pf->flags & I40E_FLAG_MSIX_ENABLED)
		num_tc_qps = min_t(int, num_tc_qps, pf->num_lan_msix);

	/* Setup queue offset/count for all TCs for given VSI */
	for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
		/* See if the given TC is enabled for the given VSI */
		if (vsi->tc_config.enabled_tc & BIT(i)) {
			/* TC is enabled */
			int pow, num_qps;

			switch (vsi->type) {
			case I40E_VSI_MAIN:
				if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED |
				    I40E_FLAG_FD_ATR_ENABLED)) ||
				    vsi->tc_config.enabled_tc != 1) {
					qcount = min_t(int, pf->alloc_rss_size,
						       num_tc_qps);
					break;
				}
				/* fall through */
			case I40E_VSI_FDIR:
			case I40E_VSI_SRIOV:
			case I40E_VSI_VMDQ2:
			default:
				qcount = num_tc_qps;
				WARN_ON(i != 0);
				break;
			}
			vsi->tc_config.tc_info[i].qoffset = offset;
			vsi->tc_config.tc_info[i].qcount = qcount;

			/* find the next higher power-of-2 of num queue pairs */
			num_qps = qcount;
			pow = 0;
			while (num_qps && (BIT_ULL(pow) < qcount)) {
				pow++;
				num_qps >>= 1;
			}

			vsi->tc_config.tc_info[i].netdev_tc = netdev_tc++;
			qmap =
			    (offset << I40E_AQ_VSI_TC_QUE_OFFSET_SHIFT) |
			    (pow << I40E_AQ_VSI_TC_QUE_NUMBER_SHIFT);

			offset += qcount;
		} else {
			/* TC is not enabled so set the offset to
			 * default queue and allocate one queue
			 * for the given TC.
			 */
			vsi->tc_config.tc_info[i].qoffset = 0;
			vsi->tc_config.tc_info[i].qcount = 1;
			vsi->tc_config.tc_info[i].netdev_tc = 0;

			qmap = 0;
		}
		ctxt->info.tc_mapping[i] = cpu_to_le16(qmap);
	}

	/* Set actual Tx/Rx queue pairs */
	vsi->num_queue_pairs = offset;
	if ((vsi->type == I40E_VSI_MAIN) && (numtc == 1)) {
		if (vsi->req_queue_pairs > 0)
			vsi->num_queue_pairs = vsi->req_queue_pairs;
		else if (pf->flags & I40E_FLAG_MSIX_ENABLED)
			vsi->num_queue_pairs = pf->num_lan_msix;
	}

	/* Scheduler section valid can only be set for ADD VSI */
	if (is_add) {
		sections |= I40E_AQ_VSI_PROP_SCHED_VALID;

		ctxt->info.up_enable_bits = enabled_tc;
	}
	if (vsi->type == I40E_VSI_SRIOV) {
		ctxt->info.mapping_flags |=
				     cpu_to_le16(I40E_AQ_VSI_QUE_MAP_NONCONTIG);
		for (i = 0; i < vsi->num_queue_pairs; i++)
			ctxt->info.queue_mapping[i] =
					       cpu_to_le16(vsi->base_queue + i);
	} else {
		ctxt->info.mapping_flags |=
					cpu_to_le16(I40E_AQ_VSI_QUE_MAP_CONTIG);
		ctxt->info.queue_mapping[0] = cpu_to_le16(vsi->base_queue);
	}
	ctxt->info.valid_sections |= cpu_to_le16(sections);
}

Project: linux
File: i40e_main.c

static void i40e_quiesce_vsi(struct i40e_vsi *vsi)
{
	if (test_bit(__I40E_VSI_DOWN, vsi->state))
		return;

	set_bit(__I40E_VSI_NEEDS_RESTART, vsi->state);
	if (vsi->netdev && netif_running(vsi->netdev))
		vsi->netdev->netdev_ops->ndo_stop(vsi->netdev);
	else
		i40e_vsi_close(vsi);
}

Project: linux
File: i40e_main.c

static int i40e_enter_busy_conf(struct i40e_vsi *vsi)
{
	struct i40e_pf *pf = vsi->back;
	int timeout = 50;

	while (test_and_set_bit(__I40E_CONFIG_BUSY, pf->state)) {
		timeout--;
		if (!timeout)
			return -EBUSY;
		usleep_range(1000, 2000);
	}

	return 0;
}

Project: linux
File: i40e_main.c

static int i40e_validate_mqprio_qopt(struct i40e_vsi *vsi,
				     struct tc_mqprio_qopt_offload *mqprio_qopt)
{
	u64 sum_max_rate = 0;
	u64 max_rate = 0;
	int i;

	if (mqprio_qopt->qopt.offset[0] != 0 ||
	    mqprio_qopt->qopt.num_tc < 1 ||
	    mqprio_qopt->qopt.num_tc > I40E_MAX_TRAFFIC_CLASS)
		return -EINVAL;
	for (i = 0; ; i++) {
		if (!mqprio_qopt->qopt.count[i])
			return -EINVAL;
		if (mqprio_qopt->min_rate[i]) {
			dev_err(&vsi->back->pdev->dev,
				"Invalid min tx rate (greater than 0) specified\n");
			return -EINVAL;
		}
		max_rate = mqprio_qopt->max_rate[i];
		do_div(max_rate, I40E_BW_MBPS_DIVISOR);
		sum_max_rate += max_rate;

		if (i >= mqprio_qopt->qopt.num_tc - 1)
			break;
		if (mqprio_qopt->qopt.offset[i + 1] !=
		    (mqprio_qopt->qopt.offset[i] + mqprio_qopt->qopt.count[i]))
			return -EINVAL;
	}
	if (vsi->num_queue_pairs <
	    (mqprio_qopt->qopt.offset[i] + mqprio_qopt->qopt.count[i])) {
		return -EINVAL;
	}
	if (sum_max_rate > i40e_get_link_speed(vsi)) {
		dev_err(&vsi->back->pdev->dev,
			"Invalid max tx rate specified\n");
		return -EINVAL;
	}
	return 0;
}

Project: linux
File: i40e_main.c

static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi)
{
	struct i40e_pf *pf = vsi->back;

	WARN_ON(in_interrupt());
	while (test_and_set_bit(__I40E_CONFIG_BUSY, pf->state))
		usleep_range(1000, 2000);
	i40e_down(vsi);

	i40e_up(vsi);
	clear_bit(__I40E_CONFIG_BUSY, pf->state);
}

Project: linux
File: i40e_main.c

static void i40e_config_bridge_mode(struct i40e_veb *veb)
{
	struct i40e_pf *pf = veb->pf;

	if (pf->hw.debug_mask & I40E_DEBUG_LAN)
		dev_info(&pf->pdev->dev, "enabling bridge mode: %s\n",
			 veb->bridge_mode == BRIDGE_MODE_VEPA ? "VEPA" : "VEB");
	if (veb->bridge_mode & BRIDGE_MODE_VEPA)
		i40e_disable_pf_switch_lb(pf);
	else
		i40e_enable_pf_switch_lb(pf);
}

Project: linux
File: i40e_main.c

static void i40e_vsi_set_default_tc_config(struct i40e_vsi *vsi)
{
	u16 qcount;
	int i;

	/* Only TC0 is enabled */
	vsi->tc_config.numtc = 1;
	vsi->tc_config.enabled_tc = 1;
	qcount = min_t(int, vsi->alloc_queue_pairs,
		       i40e_pf_get_max_q_per_tc(vsi->back));
	for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
		/* For the TC that is not enabled set the offset to to default
		 * queue and allocate one queue for the given TC.
		 */
		vsi->tc_config.tc_info[i].qoffset = 0;
		if (i == 0)
			vsi->tc_config.tc_info[i].qcount = qcount;
		else
			vsi->tc_config.tc_info[i].qcount = 1;
		vsi->tc_config.tc_info[i].netdev_tc = 0;
	}
}

Project: linux
File: i40e_main.c

static void i40e_pf_unquiesce_all_vsi(struct i40e_pf *pf)
{
	int v;

	for (v = 0; v < pf->num_alloc_vsi; v++) {
		if (pf->vsi[v])
			i40e_unquiesce_vsi(pf->vsi[v]);
	}
}

Project: linux
File: i40e_main.c

static irqreturn_t i40e_fdir_clean_ring(int irq, void *data)
{
	struct i40e_q_vector *q_vector = data;
	struct i40e_vsi *vsi;

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

	vsi = q_vector->tx.ring->vsi;
	i40e_clean_fdir_tx_irq(q_vector->tx.ring, vsi->work_limit);

	return IRQ_HANDLED;
}

Project: linux
File: i40e_main.c

int i40e_add_del_cloud_filter(struct i40e_vsi *vsi,
			      struct i40e_cloud_filter *filter, bool add)
{
	struct i40e_aqc_cloud_filters_element_data cld_filter;
	struct i40e_pf *pf = vsi->back;
	int ret;
	static const u16 flag_table[128] = {
		[I40E_CLOUD_FILTER_FLAGS_OMAC]  =
			I40E_AQC_ADD_CLOUD_FILTER_OMAC,
		[I40E_CLOUD_FILTER_FLAGS_IMAC]  =
			I40E_AQC_ADD_CLOUD_FILTER_IMAC,
		[I40E_CLOUD_FILTER_FLAGS_IMAC_IVLAN]  =
			I40E_AQC_ADD_CLOUD_FILTER_IMAC_IVLAN,
		[I40E_CLOUD_FILTER_FLAGS_IMAC_TEN_ID] =
			I40E_AQC_ADD_CLOUD_FILTER_IMAC_TEN_ID,
		[I40E_CLOUD_FILTER_FLAGS_OMAC_TEN_ID_IMAC] =
			I40E_AQC_ADD_CLOUD_FILTER_OMAC_TEN_ID_IMAC,
		[I40E_CLOUD_FILTER_FLAGS_IMAC_IVLAN_TEN_ID] =
			I40E_AQC_ADD_CLOUD_FILTER_IMAC_IVLAN_TEN_ID,
		[I40E_CLOUD_FILTER_FLAGS_IIP] =
			I40E_AQC_ADD_CLOUD_FILTER_IIP,
	};

	if (filter->flags >= ARRAY_SIZE(flag_table))
		return I40E_ERR_CONFIG;

	/* copy element needed to add cloud filter from filter */
	i40e_set_cld_element(filter, &cld_filter);

	if (filter->tunnel_type != I40E_CLOUD_TNL_TYPE_NONE)
		cld_filter.flags = cpu_to_le16(filter->tunnel_type <<
					     I40E_AQC_ADD_CLOUD_TNL_TYPE_SHIFT);

	if (filter->n_proto == ETH_P_IPV6)
		cld_filter.flags |= cpu_to_le16(flag_table[filter->flags] |
						I40E_AQC_ADD_CLOUD_FLAGS_IPV6);
	else
		cld_filter.flags |= cpu_to_le16(flag_table[filter->flags] |
						I40E_AQC_ADD_CLOUD_FLAGS_IPV4);

	if (add)
		ret = i40e_aq_add_cloud_filters(&pf->hw, filter->seid,
						&cld_filter, 1);
	else
		ret = i40e_aq_rem_cloud_filters(&pf->hw, filter->seid,
						&cld_filter, 1);
	if (ret)
		dev_dbg(&pf->pdev->dev,
			"Failed to %s cloud filter using l4 port %u, err %d aq_err %d\n",
			add ? "add" : "delete", filter->dst_port, ret,
			pf->hw.aq.asq_last_status);
	else
		dev_info(&pf->pdev->dev,
			 "%s cloud filter for VSI: %d\n",
			 add ? "Added" : "Deleted", filter->seid);
	return ret;
}

Project: linux
File: i40e_main.c

static void i40e_reset_and_rebuild(struct i40e_pf *pf, bool reinit,
				   bool lock_acquired)
{
	int ret;
	/* Now we wait for GRST to settle out.
	 * We don't have to delete the VEBs or VSIs from the hw switch
	 * because the reset will make them disappear.
	 */
	ret = i40e_reset(pf);
	if (!ret)
		i40e_rebuild(pf, reinit, lock_acquired);
}

Project: linux
File: i40e_main.c

static void i40e_reset_subtask(struct i40e_pf *pf)
{
	u32 reset_flags = 0;

	if (test_bit(__I40E_REINIT_REQUESTED, pf->state)) {
		reset_flags |= BIT(__I40E_REINIT_REQUESTED);
		clear_bit(__I40E_REINIT_REQUESTED, pf->state);
	}
	if (test_bit(__I40E_PF_RESET_REQUESTED, pf->state)) {
		reset_flags |= BIT(__I40E_PF_RESET_REQUESTED);
		clear_bit(__I40E_PF_RESET_REQUESTED, pf->state);
	}
	if (test_bit(__I40E_CORE_RESET_REQUESTED, pf->state)) {
		reset_flags |= BIT(__I40E_CORE_RESET_REQUESTED);
		clear_bit(__I40E_CORE_RESET_REQUESTED, pf->state);
	}
	if (test_bit(__I40E_GLOBAL_RESET_REQUESTED, pf->state)) {
		reset_flags |= BIT(__I40E_GLOBAL_RESET_REQUESTED);
		clear_bit(__I40E_GLOBAL_RESET_REQUESTED, pf->state);
	}
	if (test_bit(__I40E_DOWN_REQUESTED, pf->state)) {
		reset_flags |= BIT(__I40E_DOWN_REQUESTED);
		clear_bit(__I40E_DOWN_REQUESTED, pf->state);
	}

	/* If there's a recovery already waiting, it takes
	 * precedence before starting a new reset sequence.
	 */
	if (test_bit(__I40E_RESET_INTR_RECEIVED, pf->state)) {
		i40e_prep_for_reset(pf, false);
		i40e_reset(pf);
		i40e_rebuild(pf, false, false);
	}

	/* If we're already down or resetting, just bail */
	if (reset_flags &&
	    !test_bit(__I40E_DOWN, pf->state) &&
	    !test_bit(__I40E_CONFIG_BUSY, pf->state)) {
		i40e_do_reset(pf, reset_flags, false);
	}
}

Project: linux
File: i40e_main.c

void __i40e_del_filter(struct i40e_vsi *vsi, struct i40e_mac_filter *f)
{
	if (!f)
		return;

	/* If the filter was never added to firmware then we can just delete it
	 * directly and we don't want to set the status to remove or else an
	 * admin queue command will unnecessarily fire.
	 */
	if ((f->state == I40E_FILTER_FAILED) ||
	    (f->state == I40E_FILTER_NEW)) {
		hash_del(&f->hlist);
		kfree(f);
	} else {
		f->state = I40E_FILTER_REMOVE;
	}

	vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
	set_bit(__I40E_MACVLAN_SYNC_PENDING, vsi->back->state);
}

Project: linux
File: i40e_main.c

static int i40e_vsi_alloc_arrays(struct i40e_vsi *vsi, bool alloc_qvectors)
{
	struct i40e_ring **next_rings;
	int size;
	int ret = 0;

	/* allocate memory for both Tx, XDP Tx and Rx ring pointers */
	size = sizeof(struct i40e_ring *) * vsi->alloc_queue_pairs *
	       (i40e_enabled_xdp_vsi(vsi) ? 3 : 2);
	vsi->tx_rings = kzalloc(size, GFP_KERNEL);
	if (!vsi->tx_rings)
		return -ENOMEM;
	next_rings = vsi->tx_rings + vsi->alloc_queue_pairs;
	if (i40e_enabled_xdp_vsi(vsi)) {
		vsi->xdp_rings = next_rings;
		next_rings += vsi->alloc_queue_pairs;
	}
	vsi->rx_rings = next_rings;

	if (alloc_qvectors) {
		/* allocate memory for q_vector pointers */
		size = sizeof(struct i40e_q_vector *) * vsi->num_q_vectors;
		vsi->q_vectors = kzalloc(size, GFP_KERNEL);
		if (!vsi->q_vectors) {
			ret = -ENOMEM;
			goto err_vectors;
		}
	}
	return ret;

err_vectors:
	kfree(vsi->tx_rings);
	return ret;
}

Project: linux
File: i40e_main.c

static int i40e_init_msix(struct i40e_pf *pf)
{
	struct i40e_hw *hw = &pf->hw;
	int cpus, extra_vectors;
	int vectors_left;
	int v_budget, i;
	int v_actual;
	int iwarp_requested = 0;

	if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
		return -ENODEV;

	/* The number of vectors we'll request will be comprised of:
	 *   - Add 1 for "other" cause for Admin Queue events, etc.
	 *   - The number of LAN queue pairs
	 *	- Queues being used for RSS.
	 *		We don't need as many as max_rss_size vectors.
	 *		use rss_size instead in the calculation since that
	 *		is governed by number of cpus in the system.
	 *	- assumes symmetric Tx/Rx pairing
	 *   - The number of VMDq pairs
	 *   - The CPU count within the NUMA node if iWARP is enabled
	 * Once we count this up, try the request.
	 *
	 * If we can't get what we want, we'll simplify to nearly nothing
	 * and try again.  If that still fails, we punt.
	 */
	vectors_left = hw->func_caps.num_msix_vectors;
	v_budget = 0;

	/* reserve one vector for miscellaneous handler */
	if (vectors_left) {
		v_budget++;
		vectors_left--;
	}

	/* reserve some vectors for the main PF traffic queues. Initially we
	 * only reserve at most 50% of the available vectors, in the case that
	 * the number of online CPUs is large. This ensures that we can enable
	 * extra features as well. Once we've enabled the other features, we
	 * will use any remaining vectors to reach as close as we can to the
	 * number of online CPUs.
	 */
	cpus = num_online_cpus();
	pf->num_lan_msix = min_t(int, cpus, vectors_left / 2);
	vectors_left -= pf->num_lan_msix;

	/* reserve one vector for sideband flow director */
	if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
		if (vectors_left) {
			pf->num_fdsb_msix = 1;
			v_budget++;
			vectors_left--;
		} else {
			pf->num_fdsb_msix = 0;
		}
	}

	/* can we reserve enough for iWARP? */
	if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
		iwarp_requested = pf->num_iwarp_msix;

		if (!vectors_left)
			pf->num_iwarp_msix = 0;
		else if (vectors_left < pf->num_iwarp_msix)
			pf->num_iwarp_msix = 1;
		v_budget += pf->num_iwarp_msix;
		vectors_left -= pf->num_iwarp_msix;
	}

	/* any vectors left over go for VMDq support */
	if (pf->flags & I40E_FLAG_VMDQ_ENABLED) {
		if (!vectors_left) {
			pf->num_vmdq_msix = 0;
			pf->num_vmdq_qps = 0;
		} else {
			int vmdq_vecs_wanted =
				pf->num_vmdq_vsis * pf->num_vmdq_qps;
			int vmdq_vecs =
				min_t(int, vectors_left, vmdq_vecs_wanted);

			/* if we're short on vectors for what's desired, we limit
			 * the queues per vmdq.  If this is still more than are
			 * available, the user will need to change the number of
			 * queues/vectors used by the PF later with the ethtool
			 * channels command
			 */
			if (vectors_left < vmdq_vecs_wanted) {
				pf->num_vmdq_qps = 1;
				vmdq_vecs_wanted = pf->num_vmdq_vsis;
				vmdq_vecs = min_t(int,
						  vectors_left,
						  vmdq_vecs_wanted);
			}
			pf->num_vmdq_msix = pf->num_vmdq_qps;

			v_budget += vmdq_vecs;
			vectors_left -= vmdq_vecs;
		}
	}

	/* On systems with a large number of SMP cores, we previously limited
	 * the number of vectors for num_lan_msix to be at most 50% of the
	 * available vectors, to allow for other features. Now, we add back
	 * the remaining vectors. However, we ensure that the total
	 * num_lan_msix will not exceed num_online_cpus(). To do this, we
	 * calculate the number of vectors we can add without going over the
	 * cap of CPUs. For systems with a small number of CPUs this will be
	 * zero.
	 */
	extra_vectors = min_t(int, cpus - pf->num_lan_msix, vectors_left);
	pf->num_lan_msix += extra_vectors;
	vectors_left -= extra_vectors;

	WARN(vectors_left < 0,
	     "Calculation of remaining vectors underflowed. This is an accounting bug when determining total MSI-X vectors.\n");

	v_budget += pf->num_lan_msix;
	pf->msix_entries = kcalloc(v_budget, sizeof(struct msix_entry),
				   GFP_KERNEL);
	if (!pf->msix_entries)
		return -ENOMEM;

	for (i = 0; i < v_budget; i++)
		pf->msix_entries[i].entry = i;
	v_actual = i40e_reserve_msix_vectors(pf, v_budget);

	if (v_actual < I40E_MIN_MSIX) {
		pf->flags &= ~I40E_FLAG_MSIX_ENABLED;
		kfree(pf->msix_entries);
		pf->msix_entries = NULL;
		pci_disable_msix(pf->pdev);
		return -ENODEV;

	} else if (v_actual == I40E_MIN_MSIX) {
		/* Adjust for minimal MSIX use */
		pf->num_vmdq_vsis = 0;
		pf->num_vmdq_qps = 0;
		pf->num_lan_qps = 1;
		pf->num_lan_msix = 1;

	} else if (v_actual != v_budget) {
		/* If we have limited resources, we will start with no vectors
		 * for the special features and then allocate vectors to some
		 * of these features based on the policy and at the end disable
		 * the features that did not get any vectors.
		 */
		int vec;

		dev_info(&pf->pdev->dev,
			 "MSI-X vector limit reached with %d, wanted %d, attempting to redistribute vectors\n",
			 v_actual, v_budget);
		/* reserve the misc vector */
		vec = v_actual - 1;

		/* Scale vector usage down */
		pf->num_vmdq_msix = 1;    /* force VMDqs to only one vector */
		pf->num_vmdq_vsis = 1;
		pf->num_vmdq_qps = 1;

		/* partition out the remaining vectors */
		switch (vec) {
		case 2:
			pf->num_lan_msix = 1;
			break;
		case 3:
			if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
				pf->num_lan_msix = 1;
				pf->num_iwarp_msix = 1;
			} else {
				pf->num_lan_msix = 2;
			}
			break;
		default:
			if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
				pf->num_iwarp_msix = min_t(int, (vec / 3),
						 iwarp_requested);
				pf->num_vmdq_vsis = min_t(int, (vec / 3),
						  I40E_DEFAULT_NUM_VMDQ_VSI);
			} else {
				pf->num_vmdq_vsis = min_t(int, (vec / 2),
						  I40E_DEFAULT_NUM_VMDQ_VSI);
			}
			if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
				pf->num_fdsb_msix = 1;
				vec--;
			}
			pf->num_lan_msix = min_t(int,
			       (vec - (pf->num_iwarp_msix + pf->num_vmdq_vsis)),
							      pf->num_lan_msix);
			pf->num_lan_qps = pf->num_lan_msix;
			break;
		}
	}

	if ((pf->flags & I40E_FLAG_FD_SB_ENABLED) &&
	    (pf->num_fdsb_msix == 0)) {
		dev_info(&pf->pdev->dev, "Sideband Flowdir disabled, not enough MSI-X vectors\n");
		pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
		pf->flags |= I40E_FLAG_FD_SB_INACTIVE;
	}
	if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
	    (pf->num_vmdq_msix == 0)) {
		dev_info(&pf->pdev->dev, "VMDq disabled, not enough MSI-X vectors\n");
		pf->flags &= ~I40E_FLAG_VMDQ_ENABLED;
	}

	if ((pf->flags & I40E_FLAG_IWARP_ENABLED) &&
	    (pf->num_iwarp_msix == 0)) {
		dev_info(&pf->pdev->dev, "IWARP disabled, not enough MSI-X vectors\n");
		pf->flags &= ~I40E_FLAG_IWARP_ENABLED;
	}
	i40e_debug(&pf->hw, I40E_DEBUG_INIT,
		   "MSI-X vector distribution: PF %d, VMDq %d, FDSB %d, iWARP %d\n",
		   pf->num_lan_msix,
		   pf->num_vmdq_msix * pf->num_vmdq_vsis,
		   pf->num_fdsb_msix,
		   pf->num_iwarp_msix);

	return v_actual;
}

Project: linux
File: i40e_main.c

static int i40e_rebuild_channels(struct i40e_vsi *vsi)
{
	struct i40e_channel *ch, *ch_tmp;
	i40e_status ret;

	if (list_empty(&vsi->ch_list))
		return 0;

	list_for_each_entry_safe(ch, ch_tmp, &vsi->ch_list, list) {
		if (!ch->initialized)
			break;
		/* Proceed with creation of channel (VMDq2) VSI */
		ret = i40e_add_channel(vsi->back, vsi->uplink_seid, ch);
		if (ret) {
			dev_info(&vsi->back->pdev->dev,
				 "failed to rebuild channels using uplink_seid %u\n",
				 vsi->uplink_seid);
			return ret;
		}
		/* Reconfigure TX queues using QTX_CTL register */
		ret = i40e_channel_config_tx_ring(vsi->back, vsi, ch);
		if (ret) {
			dev_info(&vsi->back->pdev->dev,
				 "failed to configure TX rings for channel %u\n",
				 ch->seid);
			return ret;
		}
		/* update 'next_base_queue' */
		vsi->next_base_queue = vsi->next_base_queue +
							ch->num_queue_pairs;
		if (ch->max_tx_rate) {
			u64 credits = ch->max_tx_rate;

			if (i40e_set_bw_limit(vsi, ch->seid,
					      ch->max_tx_rate))
				return -EINVAL;

			do_div(credits, I40E_BW_CREDIT_DIVISOR);
			dev_dbg(&vsi->back->pdev->dev,
				"Set tx rate of %llu Mbps (count of 50Mbps %llu) for vsi->seid %u\n",
				ch->max_tx_rate,
				credits,
				ch->seid);
		}
		ret = i40e_rebuild_cloud_filters(vsi, ch->seid);
		if (ret) {
			dev_dbg(&vsi->back->pdev->dev,
				"Failed to rebuild cloud filters for channel VSI %u\n",
				ch->seid);
			return ret;
		}
	}
	return 0;
}

Project: linux
File: i40e_main.c

int i40e_reconfig_rss_queues(struct i40e_pf *pf, int queue_count)
{
	struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
	int new_rss_size;

	if (!(pf->flags & I40E_FLAG_RSS_ENABLED))
		return 0;

	queue_count = min_t(int, queue_count, num_online_cpus());
	new_rss_size = min_t(int, queue_count, pf->rss_size_max);

	if (queue_count != vsi->num_queue_pairs) {
		u16 qcount;

		vsi->req_queue_pairs = queue_count;
		i40e_prep_for_reset(pf, true);

		pf->alloc_rss_size = new_rss_size;

		i40e_reset_and_rebuild(pf, true, true);

		/* Discard the user configured hash keys and lut, if less
		 * queues are enabled.
		 */
		if (queue_count < vsi->rss_size) {
			i40e_clear_rss_config_user(vsi);
			dev_dbg(&pf->pdev->dev,
				"discard user configured hash keys and lut\n");
		}

		/* Reset vsi->rss_size, as number of enabled queues changed */
		qcount = vsi->num_queue_pairs / vsi->tc_config.numtc;
		vsi->rss_size = min_t(int, pf->alloc_rss_size, qcount);

		i40e_pf_config_rss(pf);
	}
	dev_info(&pf->pdev->dev, "User requested queue count/HW max RSS count:  %d/%d\n",
		 vsi->req_queue_pairs, pf->rss_size_max);
	return pf->alloc_rss_size;
}

Project: linux
File: i40e_main.c

static i40e_status i40e_force_link_state(struct i40e_pf *pf, bool is_up)
{
	struct i40e_aq_get_phy_abilities_resp abilities;
	struct i40e_aq_set_phy_config config = {0};
	struct i40e_hw *hw = &pf->hw;
	i40e_status err;
	u64 mask;
	u8 speed;

	/* Card might've been put in an unstable state by other drivers
	 * and applications, which causes incorrect speed values being
	 * set on startup. In order to clear speed registers, we call
	 * get_phy_capabilities twice, once to get initial state of
	 * available speeds, and once to get current PHY config.
	 */
	err = i40e_aq_get_phy_capabilities(hw, false, true, &abilities,
					   NULL);
	if (err) {
		dev_err(&pf->pdev->dev,
			"failed to get phy cap., ret =  %s last_status =  %s\n",
			i40e_stat_str(hw, err),
			i40e_aq_str(hw, hw->aq.asq_last_status));
		return err;
	}
	speed = abilities.link_speed;

	/* Get the current phy config */
	err = i40e_aq_get_phy_capabilities(hw, false, false, &abilities,
					   NULL);
	if (err) {
		dev_err(&pf->pdev->dev,
			"failed to get phy cap., ret =  %s last_status =  %s\n",
			i40e_stat_str(hw, err),
			i40e_aq_str(hw, hw->aq.asq_last_status));
		return err;
	}

	/* If link needs to go up, but was not forced to go down,
	 * and its speed values are OK, no need for a flap
	 */
	if (is_up && abilities.phy_type != 0 && abilities.link_speed != 0)
		return I40E_SUCCESS;

	/* To force link we need to set bits for all supported PHY types,
	 * but there are now more than 32, so we need to split the bitmap
	 * across two fields.
	 */
	mask = I40E_PHY_TYPES_BITMASK;
	config.phy_type = is_up ? cpu_to_le32((u32)(mask & 0xffffffff)) : 0;
	config.phy_type_ext = is_up ? (u8)((mask >> 32) & 0xff) : 0;
	/* Copy the old settings, except of phy_type */
	config.abilities = abilities.abilities;
	if (abilities.link_speed != 0)
		config.link_speed = abilities.link_speed;
	else
		config.link_speed = speed;
	config.eee_capability = abilities.eee_capability;
	config.eeer = abilities.eeer_val;
	config.low_power_ctrl = abilities.d3_lpan;
	config.fec_config = abilities.fec_cfg_curr_mod_ext_info &
			    I40E_AQ_PHY_FEC_CONFIG_MASK;
	err = i40e_aq_set_phy_config(hw, &config, NULL);

	if (err) {
		dev_err(&pf->pdev->dev,
			"set phy config ret =  %s last_status =  %s\n",
			i40e_stat_str(&pf->hw, err),
			i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
		return err;
	}

	/* Update the link info */
	err = i40e_update_link_info(hw);
	if (err) {
		/* Wait a little bit (on 40G cards it sometimes takes a really
		 * long time for link to come back from the atomic reset)
		 * and try once more
		 */
		msleep(1000);
		i40e_update_link_info(hw);
	}

	i40e_aq_set_link_restart_an(hw, true, NULL);

	return I40E_SUCCESS;
}

Project: linux
File: i40e_main.c

static void i40e_stat_update48(struct i40e_hw *hw, u32 hireg, u32 loreg,
			       bool offset_loaded, u64 *offset, u64 *stat)
{
	u64 new_data;

	if (hw->device_id == I40E_DEV_ID_QEMU) {
		new_data = rd32(hw, loreg);
		new_data |= ((u64)(rd32(hw, hireg) & 0xFFFF)) << 32;
	} else {
		new_data = rd64(hw, loreg);
	}
	if (!offset_loaded)
		*offset = new_data;
	if (likely(new_data >= *offset))
		*stat = new_data - *offset;
	else
		*stat = (new_data + BIT_ULL(48)) - *offset;
	*stat &= 0xFFFFFFFFFFFFULL;
}

Project: linux
File: i40e_main.c

void i40e_vsi_stop_rings(struct i40e_vsi *vsi)
{
	/* When port TX is suspended, don't wait */
	if (test_bit(__I40E_PORT_SUSPENDED, vsi->back->state))
		return i40e_vsi_stop_rings_no_wait(vsi);

	/* do rx first for enable and last for disable
	 * Ignore return value, we need to shutdown whatever we can
	 */
	i40e_vsi_control_tx(vsi, false);
	i40e_vsi_control_rx(vsi, false);
}

Project: linux
File: i40e_main.c

static int i40e_ndo_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
			    struct net_device *dev,
			    const unsigned char *addr, u16 vid,
			    u16 flags,
			    struct netlink_ext_ack *extack)
{
	struct i40e_netdev_priv *np = netdev_priv(dev);
	struct i40e_pf *pf = np->vsi->back;
	int err = 0;

	if (!(pf->flags & I40E_FLAG_SRIOV_ENABLED))
		return -EOPNOTSUPP;

	if (vid) {
		pr_info("%s: vlans aren't supported yet for dev_uc|mc_add()\n", dev->name);
		return -EINVAL;
	}

	/* Hardware does not support aging addresses so if a
	 * ndm_state is given only allow permanent addresses
	 */
	if (ndm->ndm_state && !(ndm->ndm_state & NUD_PERMANENT)) {
		netdev_info(dev, "FDB only supports static addresses\n");
		return -EINVAL;
	}

	if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr))
		err = dev_uc_add_excl(dev, addr);
	else if (is_multicast_ether_addr(addr))
		err = dev_mc_add_excl(dev, addr);
	else
		err = -EINVAL;

	/* Only return duplicate errors if NLM_F_EXCL is set */
	if (err == -EEXIST && !(flags & NLM_F_EXCL))
		err = 0;

	return err;
}

Project: linux
File: i40e_main.c

static void i40e_service_task(struct work_struct *work)
{
	struct i40e_pf *pf = container_of(work,
					  struct i40e_pf,
					  service_task);
	unsigned long start_time = jiffies;

	/* don't bother with service tasks if a reset is in progress */
	if (test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state) ||
	    test_bit(__I40E_SUSPENDED, pf->state))
		return;

	if (test_and_set_bit(__I40E_SERVICE_SCHED, pf->state))
		return;

	if (!test_bit(__I40E_RECOVERY_MODE, pf->state)) {
		i40e_detect_recover_hung(pf->vsi[pf->lan_vsi]);
		i40e_sync_filters_subtask(pf);
		i40e_reset_subtask(pf);
		i40e_handle_mdd_event(pf);
		i40e_vc_process_vflr_event(pf);
		i40e_watchdog_subtask(pf);
		i40e_fdir_reinit_subtask(pf);
		if (test_and_clear_bit(__I40E_CLIENT_RESET, pf->state)) {
			/* Client subtask will reopen next time through. */
			i40e_notify_client_of_netdev_close(pf->vsi[pf->lan_vsi],
							   true);
		} else {
			i40e_client_subtask(pf);
			if (test_and_clear_bit(__I40E_CLIENT_L2_CHANGE,
					       pf->state))
				i40e_notify_client_of_l2_param_changes(
								pf->vsi[pf->lan_vsi]);
		}
		i40e_sync_filters_subtask(pf);
		i40e_sync_udp_filters_subtask(pf);
	} else {
		i40e_reset_subtask(pf);
	}

	i40e_clean_adminq_subtask(pf);

	/* flush memory to make sure state is correct before next watchdog */
	smp_mb__before_atomic();
	clear_bit(__I40E_SERVICE_SCHED, pf->state);

	/* If the tasks have taken longer than one timer cycle or there
	 * is more work to be done, reschedule the service task now
	 * rather than wait for the timer to tick again.
	 */
	if (time_after(jiffies, (start_time + pf->service_timer_period)) ||
	    test_bit(__I40E_ADMINQ_EVENT_PENDING, pf->state)		 ||
	    test_bit(__I40E_MDD_EVENT_PENDING, pf->state)		 ||
	    test_bit(__I40E_VFLR_EVENT_PENDING, pf->state))
		i40e_service_event_schedule(pf);
}

Project: linux
File: i40e_main.c

static void i40e_service_timer(struct timer_list *t)
{
	struct i40e_pf *pf = from_timer(pf, t, service_timer);

	mod_timer(&pf->service_timer,
		  round_jiffies(jiffies + pf->service_timer_period));
	i40e_service_event_schedule(pf);
}

Project: linux
File: i40e_main.c

static void i40e_queue_pair_disable_irq(struct i40e_vsi *vsi, int queue_pair)
{
	struct i40e_ring *rxr = vsi->rx_rings[queue_pair];
	struct i40e_pf *pf = vsi->back;
	struct i40e_hw *hw = &pf->hw;

	/* For simplicity, instead of removing the qp interrupt causes
	 * from the interrupt linked list, we simply disable the interrupt, and
	 * leave the list intact.
	 *
	 * All rings in a qp belong to the same qvector.
	 */
	if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
		u32 intpf = vsi->base_vector + rxr->q_vector->v_idx;

		wr32(hw, I40E_PFINT_DYN_CTLN(intpf - 1), 0);
		i40e_flush(hw);
		synchronize_irq(pf->msix_entries[intpf].vector);
	} else {
		/* Legacy and MSI mode - this stops all interrupt handling */
		wr32(hw, I40E_PFINT_ICR0_ENA, 0);
		wr32(hw, I40E_PFINT_DYN_CTL0, 0);
		i40e_flush(hw);
		synchronize_irq(pf->pdev->irq);
	}
}

Project: linux
File: i40e_main.c

static int i40e_vsi_control_tx(struct i40e_vsi *vsi, bool enable)
{
	struct i40e_pf *pf = vsi->back;
	int i, pf_q, ret = 0;

	pf_q = vsi->base_queue;
	for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
		ret = i40e_control_wait_tx_q(vsi->seid, pf,
					     pf_q,
					     false /*is xdp*/, enable);
		if (ret)
			break;

		if (!i40e_enabled_xdp_vsi(vsi))
			continue;

		ret = i40e_control_wait_tx_q(vsi->seid, pf,
					     pf_q + vsi->alloc_queue_pairs,
					     true /*is xdp*/, enable);
		if (ret)
			break;
	}
	return ret;
}

Project: linux
File: i40e_main.c

int i40e_up(struct i40e_vsi *vsi)
{
	int err;

	err = i40e_vsi_configure(vsi);
	if (!err)
		err = i40e_up_complete(vsi);

	return err;
}

Project: linux
File: i40e_main.c

static void i40e_vsi_free_tx_resources(struct i40e_vsi *vsi)
{
	int i;

	if (vsi->tx_rings) {
		for (i = 0; i < vsi->num_queue_pairs; i++)
			if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc)
				i40e_free_tx_resources(vsi->tx_rings[i]);
	}

	if (vsi->xdp_rings) {
		for (i = 0; i < vsi->num_queue_pairs; i++)
			if (vsi->xdp_rings[i] && vsi->xdp_rings[i]->desc)
				i40e_free_tx_resources(vsi->xdp_rings[i]);
	}
}

Project: linux
File: i40e_main.c

static void i40e_enable_misc_int_causes(struct i40e_pf *pf)
{
	struct i40e_hw *hw = &pf->hw;
	u32 val;

	/* clear things first */
	wr32(hw, I40E_PFINT_ICR0_ENA, 0);  /* disable all */
	rd32(hw, I40E_PFINT_ICR0);         /* read to clear */

	val = I40E_PFINT_ICR0_ENA_ECC_ERR_MASK       |
	      I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK    |
	      I40E_PFINT_ICR0_ENA_GRST_MASK          |
	      I40E_PFINT_ICR0_ENA_PCI_EXCEPTION_MASK |
	      I40E_PFINT_ICR0_ENA_GPIO_MASK          |
	      I40E_PFINT_ICR0_ENA_HMC_ERR_MASK       |
	      I40E_PFINT_ICR0_ENA_VFLR_MASK          |
	      I40E_PFINT_ICR0_ENA_ADMINQ_MASK;

	if (pf->flags & I40E_FLAG_IWARP_ENABLED)
		val |= I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;

	if (pf->flags & I40E_FLAG_PTP)
		val |= I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;

	wr32(hw, I40E_PFINT_ICR0_ENA, val);

	/* SW_ITR_IDX = 0, but don't change INTENA */
	wr32(hw, I40E_PFINT_DYN_CTL0, I40E_PFINT_DYN_CTL0_SW_ITR_INDX_MASK |
					I40E_PFINT_DYN_CTL0_INTENA_MSK_MASK);

	/* OTHER_ITR_IDX = 0 */
	wr32(hw, I40E_PFINT_STAT_CTL0, 0);
}

Project: linux
File: i40e_main.c

static void i40e_queue_pair_enable_irq(struct i40e_vsi *vsi, int queue_pair)
{
	struct i40e_ring *rxr = vsi->rx_rings[queue_pair];
	struct i40e_pf *pf = vsi->back;
	struct i40e_hw *hw = &pf->hw;

	/* All rings in a qp belong to the same qvector. */
	if (pf->flags & I40E_FLAG_MSIX_ENABLED)
		i40e_irq_dynamic_enable(vsi, rxr->q_vector->v_idx);
	else
		i40e_irq_dynamic_enable_icr0(pf);

	i40e_flush(hw);
}

Project: linux
File: i40e_main.c

static void i40e_udp_tunnel_add(struct net_device *netdev,
				struct udp_tunnel_info *ti)
{
	struct i40e_netdev_priv *np = netdev_priv(netdev);
	struct i40e_vsi *vsi = np->vsi;
	struct i40e_pf *pf = vsi->back;
	u16 port = ntohs(ti->port);
	u8 next_idx;
	u8 idx;

	idx = i40e_get_udp_port_idx(pf, port);

	/* Check if port already exists */
	if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
		netdev_info(netdev, "port %d already offloaded\n", port);
		return;
	}

	/* Now check if there is space to add the new port */
	next_idx = i40e_get_udp_port_idx(pf, 0);

	if (next_idx == I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
		netdev_info(netdev, "maximum number of offloaded UDP ports reached, not adding port %d\n",
			    port);
		return;
	}

	switch (ti->type) {
	case UDP_TUNNEL_TYPE_VXLAN:
		pf->udp_ports[next_idx].type = I40E_AQC_TUNNEL_TYPE_VXLAN;
		break;
	case UDP_TUNNEL_TYPE_GENEVE:
		if (!(pf->hw_features & I40E_HW_GENEVE_OFFLOAD_CAPABLE))
			return;
		pf->udp_ports[next_idx].type = I40E_AQC_TUNNEL_TYPE_NGE;
		break;
	default:
		return;
	}

	/* New port: add it and mark its index in the bitmap */
	pf->udp_ports[next_idx].port = port;
	pf->udp_ports[next_idx].filter_index = I40E_UDP_PORT_INDEX_UNUSED;
	pf->pending_udp_bitmap |= BIT_ULL(next_idx);
	set_bit(__I40E_UDP_FILTER_SYNC_PENDING, pf->state);
}

Project: linux
File: i40e_main.c

void i40e_do_reset(struct i40e_pf *pf, u32 reset_flags, bool lock_acquired)
{
	u32 val;

	WARN_ON(in_interrupt());


	/* do the biggest reset indicated */
	if (reset_flags & BIT_ULL(__I40E_GLOBAL_RESET_REQUESTED)) {

		/* Request a Global Reset
		 *
		 * This will start the chip's countdown to the actual full
		 * chip reset event, and a warning interrupt to be sent
		 * to all PFs, including the requestor.  Our handler
		 * for the warning interrupt will deal with the shutdown
		 * and recovery of the switch setup.
		 */
		dev_dbg(&pf->pdev->dev, "GlobalR requested\n");
		val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
		val |= I40E_GLGEN_RTRIG_GLOBR_MASK;
		wr32(&pf->hw, I40E_GLGEN_RTRIG, val);

	} else if (reset_flags & BIT_ULL(__I40E_CORE_RESET_REQUESTED)) {

		/* Request a Core Reset
		 *
		 * Same as Global Reset, except does *not* include the MAC/PHY
		 */
		dev_dbg(&pf->pdev->dev, "CoreR requested\n");
		val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
		val |= I40E_GLGEN_RTRIG_CORER_MASK;
		wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
		i40e_flush(&pf->hw);

	} else if (reset_flags & I40E_PF_RESET_FLAG) {

		/* Request a PF Reset
		 *
		 * Resets only the PF-specific registers
		 *
		 * This goes directly to the tear-down and rebuild of
		 * the switch, since we need to do all the recovery as
		 * for the Core Reset.
		 */
		dev_dbg(&pf->pdev->dev, "PFR requested\n");
		i40e_handle_reset_warning(pf, lock_acquired);

		dev_info(&pf->pdev->dev,
			 pf->flags & I40E_FLAG_DISABLE_FW_LLDP ?
			 "FW LLDP is disabled\n" :
			 "FW LLDP is enabled\n");

	} else if (reset_flags & BIT_ULL(__I40E_REINIT_REQUESTED)) {
		int v;

		/* Find the VSI(s) that requested a re-init */
		dev_info(&pf->pdev->dev,
			 "VSI reinit requested\n");
		for (v = 0; v < pf->num_alloc_vsi; v++) {
			struct i40e_vsi *vsi = pf->vsi[v];

			if (vsi != NULL &&
			    test_and_clear_bit(__I40E_VSI_REINIT_REQUESTED,
					       vsi->state))
				i40e_vsi_reinit_locked(pf->vsi[v]);
		}
	} else if (reset_flags & BIT_ULL(__I40E_DOWN_REQUESTED)) {
		int v;

		/* Find the VSI(s) that needs to be brought down */
		dev_info(&pf->pdev->dev, "VSI down requested\n");
		for (v = 0; v < pf->num_alloc_vsi; v++) {
			struct i40e_vsi *vsi = pf->vsi[v];

			if (vsi != NULL &&
			    test_and_clear_bit(__I40E_VSI_DOWN_REQUESTED,
					       vsi->state)) {
				set_bit(__I40E_VSI_DOWN, vsi->state);
				i40e_down(vsi);
			}
		}
	} else {
		dev_info(&pf->pdev->dev,
			 "bad reset request 0x%08x\n", reset_flags);
	}
}

Project: linux
File: i40e_main.c

static int i40e_correct_mac_vlan_filters(struct i40e_vsi *vsi,
					 struct hlist_head *tmp_add_list,
					 struct hlist_head *tmp_del_list,
					 int vlan_filters)
{
	s16 pvid = le16_to_cpu(vsi->info.pvid);
	struct i40e_mac_filter *f, *add_head;
	struct i40e_new_mac_filter *new;
	struct hlist_node *h;
	int bkt, new_vlan;

	/* To determine if a particular filter needs to be replaced we
	 * have the three following conditions:
	 *
	 * a) if we have a PVID assigned, then all filters which are
	 *    not marked as VLAN=PVID must be replaced with filters that
	 *    are.
	 * b) otherwise, if we have any active VLANS, all filters
	 *    which are marked as VLAN=-1 must be replaced with
	 *    filters marked as VLAN=0
	 * c) finally, if we do not have any active VLANS, all filters
	 *    which are marked as VLAN=0 must be replaced with filters
	 *    marked as VLAN=-1
	 */

	/* Update the filters about to be added in place */
	hlist_for_each_entry(new, tmp_add_list, hlist) {
		if (pvid && new->f->vlan != pvid)
			new->f->vlan = pvid;
		else if (vlan_filters && new->f->vlan == I40E_VLAN_ANY)
			new->f->vlan = 0;
		else if (!vlan_filters && new->f->vlan == 0)
			new->f->vlan = I40E_VLAN_ANY;
	}

	/* Update the remaining active filters */
	hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist) {
		/* Combine the checks for whether a filter needs to be changed
		 * and then determine the new VLAN inside the if block, in
		 * order to avoid duplicating code for adding the new filter
		 * then deleting the old filter.
		 */
		if ((pvid && f->vlan != pvid) ||
		    (vlan_filters && f->vlan == I40E_VLAN_ANY) ||
		    (!vlan_filters && f->vlan == 0)) {
			/* Determine the new vlan we will be adding */
			if (pvid)
				new_vlan = pvid;
			else if (vlan_filters)
				new_vlan = 0;
			else
				new_vlan = I40E_VLAN_ANY;

			/* Create the new filter */
			add_head = i40e_add_filter(vsi, f->macaddr, new_vlan);
			if (!add_head)
				return -ENOMEM;

			/* Create a temporary i40e_new_mac_filter */
			new = kzalloc(sizeof(*new), GFP_ATOMIC);
			if (!new)
				return -ENOMEM;

			new->f = add_head;
			new->state = add_head->state;

			/* Add the new filter to the tmp list */
			hlist_add_head(&new->hlist, tmp_add_list);

			/* Put the original filter into the delete list */
			f->state = I40E_FILTER_REMOVE;
			hash_del(&f->hlist);
			hlist_add_head(&f->hlist, tmp_del_list);
		}
	}

	vsi->has_vlan_filter = !!vlan_filters;

	return 0;
}

Project: linux
File: i40e_main.c

static int i40e_get_rss_reg(struct i40e_vsi *vsi, u8 *seed,
			    u8 *lut, u16 lut_size)
{
	struct i40e_pf *pf = vsi->back;
	struct i40e_hw *hw = &pf->hw;
	u16 i;

	if (seed) {
		u32 *seed_dw = (u32 *)seed;

		for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
			seed_dw[i] = i40e_read_rx_ctl(hw, I40E_PFQF_HKEY(i));
	}
	if (lut) {
		u32 *lut_dw = (u32 *)lut;

		if (lut_size != I40E_HLUT_ARRAY_SIZE)
			return -EINVAL;
		for (i = 0; i <= I40E_PFQF_HLUT_MAX_INDEX; i++)
			lut_dw[i] = rd32(hw, I40E_PFQF_HLUT(i));
	}

	return 0;
}

Project: linux
File: i40e_main.c

int i40e_create_queue_channel(struct i40e_vsi *vsi,
			      struct i40e_channel *ch)
{
	struct i40e_pf *pf = vsi->back;
	bool reconfig_rss;
	int err;

	if (!ch)
		return -EINVAL;

	if (!ch->num_queue_pairs) {
		dev_err(&pf->pdev->dev, "Invalid num_queues requested: %d\n",
			ch->num_queue_pairs);
		return -EINVAL;
	}

	/* validate user requested num_queues for channel */
	err = i40e_validate_num_queues(pf, ch->num_queue_pairs, vsi,
				       &reconfig_rss);
	if (err) {
		dev_info(&pf->pdev->dev, "Failed to validate num_queues (%d)\n",
			 ch->num_queue_pairs);
		return -EINVAL;
	}

	/* By default we are in VEPA mode, if this is the first VF/VMDq
	 * VSI to be added switch to VEB mode.
	 */
	if ((!(pf->flags & I40E_FLAG_VEB_MODE_ENABLED)) ||
	    (!i40e_is_any_channel(vsi))) {
		if (!is_power_of_2(vsi->tc_config.tc_info[0].qcount)) {
			dev_dbg(&pf->pdev->dev,
				"Failed to create channel. Override queues (%u) not power of 2\n",
				vsi->tc_config.tc_info[0].qcount);
			return -EINVAL;
		}

		if (!(pf->flags & I40E_FLAG_VEB_MODE_ENABLED)) {
			pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;

			if (vsi->type == I40E_VSI_MAIN) {
				if (pf->flags & I40E_FLAG_TC_MQPRIO)
					i40e_do_reset(pf, I40E_PF_RESET_FLAG,
						      true);
				else
					i40e_do_reset_safe(pf,
							   I40E_PF_RESET_FLAG);
			}
		}
		/* now onwards for main VSI, number of queues will be value
		 * of TC0's queue count
		 */
	}

	/* By this time, vsi->cnt_q_avail shall be set to non-zero and
	 * it should be more than num_queues
	 */
	if (!vsi->cnt_q_avail || vsi->cnt_q_avail < ch->num_queue_pairs) {
		dev_dbg(&pf->pdev->dev,
			"Error: cnt_q_avail (%u) less than num_queues %d\n",
			vsi->cnt_q_avail, ch->num_queue_pairs);
		return -EINVAL;
	}

	/* reconfig_rss only if vsi type is MAIN_VSI */
	if (reconfig_rss && (vsi->type == I40E_VSI_MAIN)) {
		err = i40e_vsi_reconfig_rss(vsi, ch->num_queue_pairs);
		if (err) {
			dev_info(&pf->pdev->dev,
				 "Error: unable to reconfig rss for num_queues (%u)\n",
				 ch->num_queue_pairs);
			return -EINVAL;
		}
	}

	if (!i40e_setup_channel(pf, vsi, ch)) {
		dev_info(&pf->pdev->dev, "Failed to setup channel\n");
		return -EINVAL;
	}

	dev_info(&pf->pdev->dev,
		 "Setup channel (id:%u) utilizing num_queues %d\n",
		 ch->seid, ch->num_queue_pairs);

	/* configure VSI for BW limit */
	if (ch->max_tx_rate) {
		u64 credits = ch->max_tx_rate;

		if (i40e_set_bw_limit(vsi, ch->seid, ch->max_tx_rate))
			return -EINVAL;

		do_div(credits, I40E_BW_CREDIT_DIVISOR);
		dev_dbg(&pf->pdev->dev,
			"Set tx rate of %llu Mbps (count of 50Mbps %llu) for vsi->seid %u\n",
			ch->max_tx_rate,
			credits,
			ch->seid);
	}

	/* in case of VF, this will be main SRIOV VSI */
	ch->parent_vsi = vsi;

	/* and update main_vsi's count for queue_available to use */
	vsi->cnt_q_avail -= ch->num_queue_pairs;

	return 0;
}

Project: linux
File: i40e_main.c

static void i40e_map_vector_to_qp(struct i40e_vsi *vsi, int v_idx, int qp_idx)
{
	struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
	struct i40e_ring *tx_ring = vsi->tx_rings[qp_idx];
	struct i40e_ring *rx_ring = vsi->rx_rings[qp_idx];

	tx_ring->q_vector = q_vector;
	tx_ring->next = q_vector->tx.ring;
	q_vector->tx.ring = tx_ring;
	q_vector->tx.count++;

	/* Place XDP Tx ring in the same q_vector ring list as regular Tx */
	if (i40e_enabled_xdp_vsi(vsi)) {
		struct i40e_ring *xdp_ring = vsi->xdp_rings[qp_idx];

		xdp_ring->q_vector = q_vector;
		xdp_ring->next = q_vector->tx.ring;
		q_vector->tx.ring = xdp_ring;
		q_vector->tx.count++;
	}

	rx_ring->q_vector = q_vector;
	rx_ring->next = q_vector->rx.ring;
	q_vector->rx.ring = rx_ring;
	q_vector->rx.count++;
}

Project: linux
File: i40e_main.c

static void i40e_control_tx_q(struct i40e_pf *pf, int pf_q, bool enable)
{
	struct i40e_hw *hw = &pf->hw;
	u32 tx_reg;
	int i;

	/* warn the TX unit of coming changes */
	i40e_pre_tx_queue_cfg(&pf->hw, pf_q, enable);
	if (!enable)
		usleep_range(10, 20);

	for (i = 0; i < I40E_QTX_ENA_WAIT_COUNT; i++) {
		tx_reg = rd32(hw, I40E_QTX_ENA(pf_q));
		if (((tx_reg >> I40E_QTX_ENA_QENA_REQ_SHIFT) & 1) ==
		    ((tx_reg >> I40E_QTX_ENA_QENA_STAT_SHIFT) & 1))
			break;
		usleep_range(1000, 2000);
	}

	/* Skip if the queue is already in the requested state */
	if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
		return;

	/* turn on/off the queue */
	if (enable) {
		wr32(hw, I40E_QTX_HEAD(pf_q), 0);
		tx_reg |= I40E_QTX_ENA_QENA_REQ_MASK;
	} else {
		tx_reg &= ~I40E_QTX_ENA_QENA_REQ_MASK;
	}

	wr32(hw, I40E_QTX_ENA(pf_q), tx_reg);
}

Project: linux
File: i40e_main.c

static struct i40e_cloud_filter *i40e_find_cloud_filter(struct i40e_vsi *vsi,
							unsigned long *cookie)
{
	struct i40e_cloud_filter *filter = NULL;
	struct hlist_node *node2;

	hlist_for_each_entry_safe(filter, node2,
				  &vsi->back->cloud_filter_list, cloud_node)
		if (!memcmp(cookie, &filter->cookie, sizeof(filter->cookie)))
			return filter;
	return NULL;
}

Project: linux
File: i40e_main.c

static void i40e_handle_link_event(struct i40e_pf *pf,
				   struct i40e_arq_event_info *e)
{
	struct i40e_aqc_get_link_status *status =
		(struct i40e_aqc_get_link_status *)&e->desc.params.raw;

	/* Do a new status request to re-enable LSE reporting
	 * and load new status information into the hw struct
	 * This completely ignores any state information
	 * in the ARQ event info, instead choosing to always
	 * issue the AQ update link status command.
	 */
	i40e_link_event(pf);

	/* Check if module meets thermal requirements */
	if (status->phy_type == I40E_PHY_TYPE_NOT_SUPPORTED_HIGH_TEMP) {
		dev_err(&pf->pdev->dev,
			"Rx/Tx is disabled on this device because the module does not meet thermal requirements.\n");
		dev_err(&pf->pdev->dev,
			"Refer to the Intel(R) Ethernet Adapters and Devices User Guide for a list of supported modules.\n");
	} else {
		/* check for unqualified module, if link is down, suppress
		 * the message if link was forced to be down.
		 */
		if ((status->link_info & I40E_AQ_MEDIA_AVAILABLE) &&
		    (!(status->an_info & I40E_AQ_QUALIFIED_MODULE)) &&
		    (!(status->link_info & I40E_AQ_LINK_UP)) &&
		    (!(pf->flags & I40E_FLAG_LINK_DOWN_ON_CLOSE_ENABLED))) {
			dev_err(&pf->pdev->dev,
				"Rx/Tx is disabled on this device because an unsupported SFP module type was detected.\n");
			dev_err(&pf->pdev->dev,
				"Refer to the Intel(R) Ethernet Adapters and Devices User Guide for a list of supported modules.\n");
		}
	}
}

Project: linux
File: i40e_main.c

static void i40e_cloud_filter_exit(struct i40e_pf *pf)
{
	struct i40e_cloud_filter *cfilter;
	struct hlist_node *node;

	hlist_for_each_entry_safe(cfilter, node,
				  &pf->cloud_filter_list, cloud_node) {
		hlist_del(&cfilter->cloud_node);
		kfree(cfilter);
	}
	pf->num_cloud_filters = 0;

	if ((pf->flags & I40E_FLAG_FD_SB_TO_CLOUD_FILTER) &&
	    !(pf->flags & I40E_FLAG_FD_SB_INACTIVE)) {
		pf->flags |= I40E_FLAG_FD_SB_ENABLED;
		pf->flags &= ~I40E_FLAG_FD_SB_TO_CLOUD_FILTER;
		pf->flags &= ~I40E_FLAG_FD_SB_INACTIVE;
	}
}

Project: linux
File: i40e_main.c

static int i40e_configure_rx_ring(struct i40e_ring *ring)
{
	struct i40e_vsi *vsi = ring->vsi;
	u32 chain_len = vsi->back->hw.func_caps.rx_buf_chain_len;
	u16 pf_q = vsi->base_queue + ring->queue_index;
	struct i40e_hw *hw = &vsi->back->hw;
	struct i40e_hmc_obj_rxq rx_ctx;
	i40e_status err = 0;
	bool ok;
	int ret;

	bitmap_zero(ring->state, __I40E_RING_STATE_NBITS);

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

	if (ring->vsi->type == I40E_VSI_MAIN)
		xdp_rxq_info_unreg_mem_model(&ring->xdp_rxq);

	ring->xsk_umem = i40e_xsk_umem(ring);
	if (ring->xsk_umem) {
		ring->rx_buf_len = ring->xsk_umem->chunk_size_nohr -
				   XDP_PACKET_HEADROOM;
		/* For AF_XDP ZC, we disallow packets to span on
		 * multiple buffers, thus letting us skip that
		 * handling in the fast-path.
		 */
		chain_len = 1;
		ring->zca.free = i40e_zca_free;
		ret = xdp_rxq_info_reg_mem_model(&ring->xdp_rxq,
						 MEM_TYPE_ZERO_COPY,
						 &ring->zca);
		if (ret)
			return ret;
		dev_info(&vsi->back->pdev->dev,
			 "Registered XDP mem model MEM_TYPE_ZERO_COPY on Rx ring %d\n",
			 ring->queue_index);

	} else {
		ring->rx_buf_len = vsi->rx_buf_len;
		if (ring->vsi->type == I40E_VSI_MAIN) {
			ret = xdp_rxq_info_reg_mem_model(&ring->xdp_rxq,
							 MEM_TYPE_PAGE_SHARED,
							 NULL);
			if (ret)
				return ret;
		}
	}

	rx_ctx.dbuff = DIV_ROUND_UP(ring->rx_buf_len,
				    BIT_ULL(I40E_RXQ_CTX_DBUFF_SHIFT));

	rx_ctx.base = (ring->dma / 128);
	rx_ctx.qlen = ring->count;

	/* use 32 byte descriptors */
	rx_ctx.dsize = 1;

	/* descriptor type is always zero
	 * rx_ctx.dtype = 0;
	 */
	rx_ctx.hsplit_0 = 0;

	rx_ctx.rxmax = min_t(u16, vsi->max_frame, chain_len * ring->rx_buf_len);
	if (hw->revision_id == 0)
		rx_ctx.lrxqthresh = 0;
	else
		rx_ctx.lrxqthresh = 1;
	rx_ctx.crcstrip = 1;
	rx_ctx.l2tsel = 1;
	/* this controls whether VLAN is stripped from inner headers */
	rx_ctx.showiv = 0;
	/* set the prefena field to 1 because the manual says to */
	rx_ctx.prefena = 1;

	/* clear the context in the HMC */
	err = i40e_clear_lan_rx_queue_context(hw, pf_q);
	if (err) {
		dev_info(&vsi->back->pdev->dev,
			 "Failed to clear LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
			 ring->queue_index, pf_q, err);
		return -ENOMEM;
	}

	/* set the context in the HMC */
	err = i40e_set_lan_rx_queue_context(hw, pf_q, &rx_ctx);
	if (err) {
		dev_info(&vsi->back->pdev->dev,
			 "Failed to set LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
			 ring->queue_index, pf_q, err);
		return -ENOMEM;
	}

	/* configure Rx buffer alignment */
	if (!vsi->netdev || (vsi->back->flags & I40E_FLAG_LEGACY_RX))
		clear_ring_build_skb_enabled(ring);
	else
		set_ring_build_skb_enabled(ring);

	/* cache tail for quicker writes, and clear the reg before use */
	ring->tail = hw->hw_addr + I40E_QRX_TAIL(pf_q);
	writel(0, ring->tail);

	ok = ring->xsk_umem ?
	     i40e_alloc_rx_buffers_zc(ring, I40E_DESC_UNUSED(ring)) :
	     !i40e_alloc_rx_buffers(ring, I40E_DESC_UNUSED(ring));
	if (!ok) {
		/* Log this in case the user has forgotten to give the kernel
		 * any buffers, even later in the application.
		 */
		dev_info(&vsi->back->pdev->dev,
			 "Failed to allocate some buffers on %sRx ring %d (pf_q %d)\n",
			 ring->xsk_umem ? "UMEM enabled " : "",
			 ring->queue_index, pf_q);
	}

	return 0;
}

Project: linux
File: i40e_main.c

static irqreturn_t i40e_msix_clean_rings(int irq, void *data)
{
	struct i40e_q_vector *q_vector = data;

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

	napi_schedule_irqoff(&q_vector->napi);

	return IRQ_HANDLED;
}

Project: linux
File: i40e_main.c

void i40e_aqc_add_filters(struct i40e_vsi *vsi, const char *vsi_name,
			  struct i40e_aqc_add_macvlan_element_data *list,
			  struct i40e_new_mac_filter *add_head,
			  int num_add)
{
	struct i40e_hw *hw = &vsi->back->hw;
	int aq_err, fcnt;

	i40e_aq_add_macvlan(hw, vsi->seid, list, num_add, NULL);
	aq_err = hw->aq.asq_last_status;
	fcnt = i40e_update_filter_state(num_add, list, add_head);

	if (fcnt != num_add) {
		if (vsi->type == I40E_VSI_MAIN) {
			set_bit(__I40E_VSI_OVERFLOW_PROMISC, vsi->state);
			dev_warn(&vsi->back->pdev->dev,
				 "Error %s adding RX filters on %s, promiscuous mode forced on\n",
				 i40e_aq_str(hw, aq_err), vsi_name);
		} else if (vsi->type == I40E_VSI_SRIOV ||
			   vsi->type == I40E_VSI_VMDQ1 ||
			   vsi->type == I40E_VSI_VMDQ2) {
			dev_warn(&vsi->back->pdev->dev,
				 "Error %s adding RX filters on %s, please set promiscuous on manually for %s\n",
				 i40e_aq_str(hw, aq_err), vsi_name, vsi_name);
		} else {
			dev_warn(&vsi->back->pdev->dev,
				 "Error %s adding RX filters on %s, incorrect VSI type: %i.\n",
				 i40e_aq_str(hw, aq_err), vsi_name, vsi->type);
		}
	}
}

Project: linux
File: i40e_main.c

static void i40e_netpoll(struct net_device *netdev)
{
	struct i40e_netdev_priv *np = netdev_priv(netdev);
	struct i40e_vsi *vsi = np->vsi;
	struct i40e_pf *pf = vsi->back;
	int i;

	/* if interface is down do nothing */
	if (test_bit(__I40E_VSI_DOWN, vsi->state))
		return;

	if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
		for (i = 0; i < vsi->num_q_vectors; i++)
			i40e_msix_clean_rings(0, vsi->q_vectors[i]);
	} else {
		i40e_intr(pf->pdev->irq, netdev);
	}
}

Project: linux
File: i40e_main.c

int i40e_sync_vsi_filters(struct i40e_vsi *vsi)
{
	struct hlist_head tmp_add_list, tmp_del_list;
	struct i40e_mac_filter *f;
	struct i40e_new_mac_filter *new, *add_head = NULL;
	struct i40e_hw *hw = &vsi->back->hw;
	bool old_overflow, new_overflow;
	unsigned int failed_filters = 0;
	unsigned int vlan_filters = 0;
	char vsi_name[16] = "PF";
	int filter_list_len = 0;
	i40e_status aq_ret = 0;
	u32 changed_flags = 0;
	struct hlist_node *h;
	struct i40e_pf *pf;
	int num_add = 0;
	int num_del = 0;
	int retval = 0;
	u16 cmd_flags;
	int list_size;
	int bkt;

	/* empty array typed pointers, kcalloc later */
	struct i40e_aqc_add_macvlan_element_data *add_list;
	struct i40e_aqc_remove_macvlan_element_data *del_list;

	while (test_and_set_bit(__I40E_VSI_SYNCING_FILTERS, vsi->state))
		usleep_range(1000, 2000);
	pf = vsi->back;

	old_overflow = test_bit(__I40E_VSI_OVERFLOW_PROMISC, vsi->state);

	if (vsi->netdev) {
		changed_flags = vsi->current_netdev_flags ^ vsi->netdev->flags;
		vsi->current_netdev_flags = vsi->netdev->flags;
	}

	INIT_HLIST_HEAD(&tmp_add_list);
	INIT_HLIST_HEAD(&tmp_del_list);

	if (vsi->type == I40E_VSI_SRIOV)
		snprintf(vsi_name, sizeof(vsi_name) - 1, "VF %d", vsi->vf_id);
	else if (vsi->type != I40E_VSI_MAIN)
		snprintf(vsi_name, sizeof(vsi_name) - 1, "vsi %d", vsi->seid);

	if (vsi->flags & I40E_VSI_FLAG_FILTER_CHANGED) {
		vsi->flags &= ~I40E_VSI_FLAG_FILTER_CHANGED;

		spin_lock_bh(&vsi->mac_filter_hash_lock);
		/* Create a list of filters to delete. */
		hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist) {
			if (f->state == I40E_FILTER_REMOVE) {
				/* Move the element into temporary del_list */
				hash_del(&f->hlist);
				hlist_add_head(&f->hlist, &tmp_del_list);

				/* Avoid counting removed filters */
				continue;
			}
			if (f->state == I40E_FILTER_NEW) {
				/* Create a temporary i40e_new_mac_filter */
				new = kzalloc(sizeof(*new), GFP_ATOMIC);
				if (!new)
					goto err_no_memory_locked;

				/* Store pointer to the real filter */
				new->f = f;
				new->state = f->state;

				/* Add it to the hash list */
				hlist_add_head(&new->hlist, &tmp_add_list);
			}

			/* Count the number of active (current and new) VLAN
			 * filters we have now. Does not count filters which
			 * are marked for deletion.
			 */
			if (f->vlan > 0)
				vlan_filters++;
		}

		retval = i40e_correct_mac_vlan_filters(vsi,
						       &tmp_add_list,
						       &tmp_del_list,
						       vlan_filters);
		if (retval)
			goto err_no_memory_locked;

		spin_unlock_bh(&vsi->mac_filter_hash_lock);
	}

	/* Now process 'del_list' outside the lock */
	if (!hlist_empty(&tmp_del_list)) {
		filter_list_len = hw->aq.asq_buf_size /
			    sizeof(struct i40e_aqc_remove_macvlan_element_data);
		list_size = filter_list_len *
			    sizeof(struct i40e_aqc_remove_macvlan_element_data);
		del_list = kzalloc(list_size, GFP_ATOMIC);
		if (!del_list)
			goto err_no_memory;

		hlist_for_each_entry_safe(f, h, &tmp_del_list, hlist) {
			cmd_flags = 0;

			/* handle broadcast filters by updating the broadcast
			 * promiscuous flag and release filter list.
			 */
			if (is_broadcast_ether_addr(f->macaddr)) {
				i40e_aqc_broadcast_filter(vsi, vsi_name, f);

				hlist_del(&f->hlist);
				kfree(f);
				continue;
			}

			/* add to delete list */
			ether_addr_copy(del_list[num_del].mac_addr, f->macaddr);
			if (f->vlan == I40E_VLAN_ANY) {
				del_list[num_del].vlan_tag = 0;
				cmd_flags |= I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
			} else {
				del_list[num_del].vlan_tag =
					cpu_to_le16((u16)(f->vlan));
			}

			cmd_flags |= I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
			del_list[num_del].flags = cmd_flags;
			num_del++;

			/* flush a full buffer */
			if (num_del == filter_list_len) {
				i40e_aqc_del_filters(vsi, vsi_name, del_list,
						     num_del, &retval);
				memset(del_list, 0, list_size);
				num_del = 0;
			}
			/* Release memory for MAC filter entries which were
			 * synced up with HW.
			 */
			hlist_del(&f->hlist);
			kfree(f);
		}

		if (num_del) {
			i40e_aqc_del_filters(vsi, vsi_name, del_list,
					     num_del, &retval);
		}

		kfree(del_list);
		del_list = NULL;
	}

	if (!hlist_empty(&tmp_add_list)) {
		/* Do all the adds now. */
		filter_list_len = hw->aq.asq_buf_size /
			       sizeof(struct i40e_aqc_add_macvlan_element_data);
		list_size = filter_list_len *
			       sizeof(struct i40e_aqc_add_macvlan_element_data);
		add_list = kzalloc(list_size, GFP_ATOMIC);
		if (!add_list)
			goto err_no_memory;

		num_add = 0;
		hlist_for_each_entry_safe(new, h, &tmp_add_list, hlist) {
			/* handle broadcast filters by updating the broadcast
			 * promiscuous flag instead of adding a MAC filter.
			 */
			if (is_broadcast_ether_addr(new->f->macaddr)) {
				if (i40e_aqc_broadcast_filter(vsi, vsi_name,
							      new->f))
					new->state = I40E_FILTER_FAILED;
				else
					new->state = I40E_FILTER_ACTIVE;
				continue;
			}

			/* add to add array */
			if (num_add == 0)
				add_head = new;
			cmd_flags = 0;
			ether_addr_copy(add_list[num_add].mac_addr,
					new->f->macaddr);
			if (new->f->vlan == I40E_VLAN_ANY) {
				add_list[num_add].vlan_tag = 0;
				cmd_flags |= I40E_AQC_MACVLAN_ADD_IGNORE_VLAN;
			} else {
				add_list[num_add].vlan_tag =
					cpu_to_le16((u16)(new->f->vlan));
			}
			add_list[num_add].queue_number = 0;
			/* set invalid match method for later detection */
			add_list[num_add].match_method = I40E_AQC_MM_ERR_NO_RES;
			cmd_flags |= I40E_AQC_MACVLAN_ADD_PERFECT_MATCH;
			add_list[num_add].flags = cpu_to_le16(cmd_flags);
			num_add++;

			/* flush a full buffer */
			if (num_add == filter_list_len) {
				i40e_aqc_add_filters(vsi, vsi_name, add_list,
						     add_head, num_add);
				memset(add_list, 0, list_size);
				num_add = 0;
			}
		}
		if (num_add) {
			i40e_aqc_add_filters(vsi, vsi_name, add_list, add_head,
					     num_add);
		}
		/* Now move all of the filters from the temp add list back to
		 * the VSI's list.
		 */
		spin_lock_bh(&vsi->mac_filter_hash_lock);
		hlist_for_each_entry_safe(new, h, &tmp_add_list, hlist) {
			/* Only update the state if we're still NEW */
			if (new->f->state == I40E_FILTER_NEW)
				new->f->state = new->state;
			hlist_del(&new->hlist);
			kfree(new);
		}
		spin_unlock_bh(&vsi->mac_filter_hash_lock);
		kfree(add_list);
		add_list = NULL;
	}

	/* Determine the number of active and failed filters. */
	spin_lock_bh(&vsi->mac_filter_hash_lock);
	vsi->active_filters = 0;
	hash_for_each(vsi->mac_filter_hash, bkt, f, hlist) {
		if (f->state == I40E_FILTER_ACTIVE)
			vsi->active_filters++;
		else if (f->state == I40E_FILTER_FAILED)
			failed_filters++;
	}
	spin_unlock_bh(&vsi->mac_filter_hash_lock);

	/* Check if we are able to exit overflow promiscuous mode. We can
	 * safely exit if we didn't just enter, we no longer have any failed
	 * filters, and we have reduced filters below the threshold value.
	 */
	if (old_overflow && !failed_filters &&
	    vsi->active_filters < vsi->promisc_threshold) {
		dev_info(&pf->pdev->dev,
			 "filter logjam cleared on %s, leaving overflow promiscuous mode\n",
			 vsi_name);
		clear_bit(__I40E_VSI_OVERFLOW_PROMISC, vsi->state);
		vsi->promisc_threshold = 0;
	}

	/* if the VF is not trusted do not do promisc */
	if ((vsi->type == I40E_VSI_SRIOV) && !pf->vf[vsi->vf_id].trusted) {
		clear_bit(__I40E_VSI_OVERFLOW_PROMISC, vsi->state);
		goto out;
	}

	new_overflow = test_bit(__I40E_VSI_OVERFLOW_PROMISC, vsi->state);

	/* If we are entering overflow promiscuous, we need to calculate a new
	 * threshold for when we are safe to exit
	 */
	if (!old_overflow && new_overflow)
		vsi->promisc_threshold = (vsi->active_filters * 3) / 4;

	/* check for changes in promiscuous modes */
	if (changed_flags & IFF_ALLMULTI) {
		bool cur_multipromisc;

		cur_multipromisc = !!(vsi->current_netdev_flags & IFF_ALLMULTI);
		aq_ret = i40e_aq_set_vsi_multicast_promiscuous(&vsi->back->hw,
							       vsi->seid,
							       cur_multipromisc,
							       NULL);
		if (aq_ret) {
			retval = i40e_aq_rc_to_posix(aq_ret,
						     hw->aq.asq_last_status);
			dev_info(&pf->pdev->dev,
				 "set multi promisc failed on %s, err %s aq_err %s\n",
				 vsi_name,
				 i40e_stat_str(hw, aq_ret),
				 i40e_aq_str(hw, hw->aq.asq_last_status));
		} else {
			dev_info(&pf->pdev->dev, "%s is %s allmulti mode.\n",
				 vsi->netdev->name,
				 cur_multipromisc ? "entering" : "leaving");
		}
	}

	if ((changed_flags & IFF_PROMISC) || old_overflow != new_overflow) {
		bool cur_promisc;

		cur_promisc = (!!(vsi->current_netdev_flags & IFF_PROMISC) ||
			       new_overflow);
		aq_ret = i40e_set_promiscuous(pf, cur_promisc);
		if (aq_ret) {
			retval = i40e_aq_rc_to_posix(aq_ret,
						     hw->aq.asq_last_status);
			dev_info(&pf->pdev->dev,
				 "Setting promiscuous %s failed on %s, err %s aq_err %s\n",
				 cur_promisc ? "on" : "off",
				 vsi_name,
				 i40e_stat_str(hw, aq_ret),
				 i40e_aq_str(hw, hw->aq.asq_last_status));
		}
	}
out:
	/* if something went wrong then set the changed flag so we try again */
	if (retval)
		vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;

	clear_bit(__I40E_VSI_SYNCING_FILTERS, vsi->state);
	return retval;

err_no_memory:
	/* Restore elements on the temporary add and delete lists */
	spin_lock_bh(&vsi->mac_filter_hash_lock);
err_no_memory_locked:
	i40e_undo_del_filter_entries(vsi, &tmp_del_list);
	i40e_undo_add_filter_entries(vsi, &tmp_add_list);
	spin_unlock_bh(&vsi->mac_filter_hash_lock);

	vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
	clear_bit(__I40E_VSI_SYNCING_FILTERS, vsi->state);
	return -ENOMEM;
}

Project: linux
File: i40e_main.c

static void i40e_remove(struct pci_dev *pdev)
{
	struct i40e_pf *pf = pci_get_drvdata(pdev);
	struct i40e_hw *hw = &pf->hw;
	i40e_status ret_code;
	int i;

	i40e_dbg_pf_exit(pf);

	i40e_ptp_stop(pf);

	/* Disable RSS in hw */
	i40e_write_rx_ctl(hw, I40E_PFQF_HENA(0), 0);
	i40e_write_rx_ctl(hw, I40E_PFQF_HENA(1), 0);

	/* no more scheduling of any task */
	set_bit(__I40E_SUSPENDED, pf->state);
	set_bit(__I40E_DOWN, pf->state);
	if (pf->service_timer.function)
		del_timer_sync(&pf->service_timer);
	if (pf->service_task.func)
		cancel_work_sync(&pf->service_task);

	if (test_bit(__I40E_RECOVERY_MODE, pf->state)) {
		struct i40e_vsi *vsi = pf->vsi[0];

		/* We know that we have allocated only one vsi for this PF,
		 * it was just for registering netdevice, so the interface
		 * could be visible in the 'ifconfig' output
		 */
		unregister_netdev(vsi->netdev);
		free_netdev(vsi->netdev);

		goto unmap;
	}

	/* Client close must be called explicitly here because the timer
	 * has been stopped.
	 */
	i40e_notify_client_of_netdev_close(pf->vsi[pf->lan_vsi], false);

	if (pf->flags & I40E_FLAG_SRIOV_ENABLED) {
		i40e_free_vfs(pf);
		pf->flags &= ~I40E_FLAG_SRIOV_ENABLED;
	}

	i40e_fdir_teardown(pf);

	/* If there is a switch structure or any orphans, remove them.
	 * This will leave only the PF's VSI remaining.
	 */
	for (i = 0; i < I40E_MAX_VEB; i++) {
		if (!pf->veb[i])
			continue;

		if (pf->veb[i]->uplink_seid == pf->mac_seid ||
		    pf->veb[i]->uplink_seid == 0)
			i40e_switch_branch_release(pf->veb[i]);
	}

	/* Now we can shutdown the PF's VSI, just before we kill
	 * adminq and hmc.
	 */
	if (pf->vsi[pf->lan_vsi])
		i40e_vsi_release(pf->vsi[pf->lan_vsi]);

	i40e_cloud_filter_exit(pf);

	/* remove attached clients */
	if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
		ret_code = i40e_lan_del_device(pf);
		if (ret_code)
			dev_warn(&pdev->dev, "Failed to delete client device: %d\n",
				 ret_code);
	}

	/* shutdown and destroy the HMC */
	if (hw->hmc.hmc_obj) {
		ret_code = i40e_shutdown_lan_hmc(hw);
		if (ret_code)
			dev_warn(&pdev->dev,
				 "Failed to destroy the HMC resources: %d\n",
				 ret_code);
	}

unmap:
	/* Free MSI/legacy interrupt 0 when in recovery mode. */
	if (test_bit(__I40E_RECOVERY_MODE, pf->state) &&
	    !(pf->flags & I40E_FLAG_MSIX_ENABLED))
		free_irq(pf->pdev->irq, pf);

	/* shutdown the adminq */
	i40e_shutdown_adminq(hw);

	/* destroy the locks only once, here */
	mutex_destroy(&hw->aq.arq_mutex);
	mutex_destroy(&hw->aq.asq_mutex);

	/* Clear all dynamic memory lists of rings, q_vectors, and VSIs */
	rtnl_lock();
	i40e_clear_interrupt_scheme(pf);
	for (i = 0; i < pf->num_alloc_vsi; i++) {
		if (pf->vsi[i]) {
			if (!test_bit(__I40E_RECOVERY_MODE, pf->state))
				i40e_vsi_clear_rings(pf->vsi[i]);
			i40e_vsi_clear(pf->vsi[i]);
			pf->vsi[i] = NULL;
		}
	}
	rtnl_unlock();

	for (i = 0; i < I40E_MAX_VEB; i++) {
		kfree(pf->veb[i]);
		pf->veb[i] = NULL;
	}

	kfree(pf->qp_pile);
	kfree(pf->vsi);

	iounmap(hw->hw_addr);
	kfree(pf);
	pci_release_mem_regions(pdev);

	pci_disable_pcie_error_reporting(pdev);
	pci_disable_device(pdev);
}

Project: linux
File: i40e_main.c

static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi)
{
	struct i40e_pf *pf = veb->pf;
	bool enable_stats = !!(pf->flags & I40E_FLAG_VEB_STATS_ENABLED);
	int ret;

	ret = i40e_aq_add_veb(&pf->hw, veb->uplink_seid, vsi->seid,
			      veb->enabled_tc, false,
			      &veb->seid, enable_stats, NULL);

	/* get a VEB from the hardware */
	if (ret) {
		dev_info(&pf->pdev->dev,
			 "couldn't add VEB, err %s aq_err %s\n",
			 i40e_stat_str(&pf->hw, ret),
			 i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
		return -EPERM;
	}

	/* get statistics counter */
	ret = i40e_aq_get_veb_parameters(&pf->hw, veb->seid, NULL, NULL,
					 &veb->stats_idx, NULL, NULL, NULL);
	if (ret) {
		dev_info(&pf->pdev->dev,
			 "couldn't get VEB statistics idx, err %s aq_err %s\n",
			 i40e_stat_str(&pf->hw, ret),
			 i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
		return -EPERM;
	}
	ret = i40e_veb_get_bw_info(veb);
	if (ret) {
		dev_info(&pf->pdev->dev,
			 "couldn't get VEB bw info, err %s aq_err %s\n",
			 i40e_stat_str(&pf->hw, ret),
			 i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
		i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
		return -ENOENT;
	}

	vsi->uplink_seid = veb->seid;
	vsi->veb_idx = veb->idx;
	vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;

	return 0;
}

Project: linux
File: i40e_main.c

static void i40e_set_vsi_rx_mode(struct i40e_vsi *vsi)
{
	if (vsi->netdev)
		i40e_set_rx_mode(vsi->netdev);
}

Project: linux
File: i40e_main.c

static void i40e_update_vsi_stats(struct i40e_vsi *vsi)
{
	struct i40e_pf *pf = vsi->back;
	struct rtnl_link_stats64 *ons;
	struct rtnl_link_stats64 *ns;   /* netdev stats */
	struct i40e_eth_stats *oes;
	struct i40e_eth_stats *es;     /* device's eth stats */
	u32 tx_restart, tx_busy;
	struct i40e_ring *p;
	u32 rx_page, rx_buf;
	u64 bytes, packets;
	unsigned int start;
	u64 tx_linearize;
	u64 tx_force_wb;
	u64 rx_p, rx_b;
	u64 tx_p, tx_b;
	u16 q;

	if (test_bit(__I40E_VSI_DOWN, vsi->state) ||
	    test_bit(__I40E_CONFIG_BUSY, pf->state))
		return;

	ns = i40e_get_vsi_stats_struct(vsi);
	ons = &vsi->net_stats_offsets;
	es = &vsi->eth_stats;
	oes = &vsi->eth_stats_offsets;

	/* Gather up the netdev and vsi stats that the driver collects
	 * on the fly during packet processing
	 */
	rx_b = rx_p = 0;
	tx_b = tx_p = 0;
	tx_restart = tx_busy = tx_linearize = tx_force_wb = 0;
	rx_page = 0;
	rx_buf = 0;
	rcu_read_lock();
	for (q = 0; q < vsi->num_queue_pairs; q++) {
		/* locate Tx ring */
		p = READ_ONCE(vsi->tx_rings[q]);

		do {
			start = u64_stats_fetch_begin_irq(&p->syncp);
			packets = p->stats.packets;
			bytes = p->stats.bytes;
		} while (u64_stats_fetch_retry_irq(&p->syncp, start));
		tx_b += bytes;
		tx_p += packets;
		tx_restart += p->tx_stats.restart_queue;
		tx_busy += p->tx_stats.tx_busy;
		tx_linearize += p->tx_stats.tx_linearize;
		tx_force_wb += p->tx_stats.tx_force_wb;

		/* Rx queue is part of the same block as Tx queue */
		p = &p[1];
		do {
			start = u64_stats_fetch_begin_irq(&p->syncp);
			packets = p->stats.packets;
			bytes = p->stats.bytes;
		} while (u64_stats_fetch_retry_irq(&p->syncp, start));
		rx_b += bytes;
		rx_p += packets;
		rx_buf += p->rx_stats.alloc_buff_failed;
		rx_page += p->rx_stats.alloc_page_failed;
	}
	rcu_read_unlock();
	vsi->tx_restart = tx_restart;
	vsi->tx_busy = tx_busy;
	vsi->tx_linearize = tx_linearize;
	vsi->tx_force_wb = tx_force_wb;
	vsi->rx_page_failed = rx_page;
	vsi->rx_buf_failed = rx_buf;

	ns->rx_packets = rx_p;
	ns->rx_bytes = rx_b;
	ns->tx_packets = tx_p;
	ns->tx_bytes = tx_b;

	/* update netdev stats from eth stats */
	i40e_update_eth_stats(vsi);
	ons->tx_errors = oes->tx_errors;
	ns->tx_errors = es->tx_errors;
	ons->multicast = oes->rx_multicast;
	ns->multicast = es->rx_multicast;
	ons->rx_dropped = oes->rx_discards;
	ns->rx_dropped = es->rx_discards;
	ons->tx_dropped = oes->tx_discards;
	ns->tx_dropped = es->tx_discards;

	/* pull in a couple PF stats if this is the main vsi */
	if (vsi == pf->vsi[pf->lan_vsi]) {
		ns->rx_crc_errors = pf->stats.crc_errors;
		ns->rx_errors = pf->stats.crc_errors + pf->stats.illegal_bytes;
		ns->rx_length_errors = pf->stats.rx_length_errors;
	}
}

Project: linux
File: i40e_main.c

int i40e_allocate_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem,
			     u32 size)
{
	mem->size = size;
	mem->va = kzalloc(size, GFP_KERNEL);

	if (!mem->va)
		return -ENOMEM;

	return 0;
}

Project: linux
File: i40e_main.c

static int i40e_reset(struct i40e_pf *pf)
{
	struct i40e_hw *hw = &pf->hw;
	i40e_status ret;

	ret = i40e_pf_reset(hw);
	if (ret) {
		dev_info(&pf->pdev->dev, "PF reset failed, %d\n", ret);
		set_bit(__I40E_RESET_FAILED, pf->state);
		clear_bit(__I40E_RESET_RECOVERY_PENDING, pf->state);
	} else {
		pf->pfr_count++;
	}
	return ret;
}