Adding upstream version 6.1.76.upstream/6.1.76

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 1686 insertions, 0 deletions

diff --git a/drivers/net/ethernet/aquantia/atlantic/aq_nic.c b/drivers/net/ethernet/aquantia/atlantic/aq_nic.c
new file mode 100644
index 000000000..06508eebb
--- /dev/null
+++ b/drivers/net/ethernet/aquantia/atlantic/aq_nic.c
@@ -0,0 +1,1686 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/* Atlantic Network Driver
+ *
+ * Copyright (C) 2014-2019 aQuantia Corporation
+ * Copyright (C) 2019-2020 Marvell International Ltd.
+ */
+
+/* File aq_nic.c: Definition of common code for NIC. */
+
+#include "aq_nic.h"
+#include "aq_ring.h"
+#include "aq_vec.h"
+#include "aq_hw.h"
+#include "aq_pci_func.h"
+#include "aq_macsec.h"
+#include "aq_main.h"
+#include "aq_phy.h"
+#include "aq_ptp.h"
+#include "aq_filters.h"
+
+#include <linux/moduleparam.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/timer.h>
+#include <linux/cpu.h>
+#include <linux/ip.h>
+#include <linux/tcp.h>
+#include <net/ip.h>
+#include <net/pkt_cls.h>
+
+static unsigned int aq_itr = AQ_CFG_INTERRUPT_MODERATION_AUTO;
+module_param_named(aq_itr, aq_itr, uint, 0644);
+MODULE_PARM_DESC(aq_itr, "Interrupt throttling mode");
+
+static unsigned int aq_itr_tx;
+module_param_named(aq_itr_tx, aq_itr_tx, uint, 0644);
+MODULE_PARM_DESC(aq_itr_tx, "TX interrupt throttle rate");
+
+static unsigned int aq_itr_rx;
+module_param_named(aq_itr_rx, aq_itr_rx, uint, 0644);
+MODULE_PARM_DESC(aq_itr_rx, "RX interrupt throttle rate");
+
+static void aq_nic_update_ndev_stats(struct aq_nic_s *self);
+
+static void aq_nic_rss_init(struct aq_nic_s *self, unsigned int num_rss_queues)
+{
+	static u8 rss_key[AQ_CFG_RSS_HASHKEY_SIZE] = {
+		0x1e, 0xad, 0x71, 0x87, 0x65, 0xfc, 0x26, 0x7d,
+		0x0d, 0x45, 0x67, 0x74, 0xcd, 0x06, 0x1a, 0x18,
+		0xb6, 0xc1, 0xf0, 0xc7, 0xbb, 0x18, 0xbe, 0xf8,
+		0x19, 0x13, 0x4b, 0xa9, 0xd0, 0x3e, 0xfe, 0x70,
+		0x25, 0x03, 0xab, 0x50, 0x6a, 0x8b, 0x82, 0x0c
+	};
+	struct aq_nic_cfg_s *cfg = &self->aq_nic_cfg;
+	struct aq_rss_parameters *rss_params;
+	int i = 0;
+
+	rss_params = &cfg->aq_rss;
+
+	rss_params->hash_secret_key_size = sizeof(rss_key);
+	memcpy(rss_params->hash_secret_key, rss_key, sizeof(rss_key));
+	rss_params->indirection_table_size = AQ_CFG_RSS_INDIRECTION_TABLE_MAX;
+
+	for (i = rss_params->indirection_table_size; i--;)
+		rss_params->indirection_table[i] = i & (num_rss_queues - 1);
+}
+
+/* Recalculate the number of vectors */
+static void aq_nic_cfg_update_num_vecs(struct aq_nic_s *self)
+{
+	struct aq_nic_cfg_s *cfg = &self->aq_nic_cfg;
+
+	cfg->vecs = min(cfg->aq_hw_caps->vecs, AQ_CFG_VECS_DEF);
+	cfg->vecs = min(cfg->vecs, num_online_cpus());
+	if (self->irqvecs > AQ_HW_SERVICE_IRQS)
+		cfg->vecs = min(cfg->vecs, self->irqvecs - AQ_HW_SERVICE_IRQS);
+	/* cfg->vecs should be power of 2 for RSS */
+	cfg->vecs = rounddown_pow_of_two(cfg->vecs);
+
+	if (ATL_HW_IS_CHIP_FEATURE(self->aq_hw, ANTIGUA)) {
+		if (cfg->tcs > 2)
+			cfg->vecs = min(cfg->vecs, 4U);
+	}
+
+	if (cfg->vecs <= 4)
+		cfg->tc_mode = AQ_TC_MODE_8TCS;
+	else
+		cfg->tc_mode = AQ_TC_MODE_4TCS;
+
+	/*rss rings */
+	cfg->num_rss_queues = min(cfg->vecs, AQ_CFG_NUM_RSS_QUEUES_DEF);
+	aq_nic_rss_init(self, cfg->num_rss_queues);
+}
+
+/* Checks hw_caps and 'corrects' aq_nic_cfg in runtime */
+void aq_nic_cfg_start(struct aq_nic_s *self)
+{
+	struct aq_nic_cfg_s *cfg = &self->aq_nic_cfg;
+	int i;
+
+	cfg->tcs = AQ_CFG_TCS_DEF;
+
+	cfg->is_polling = AQ_CFG_IS_POLLING_DEF;
+
+	cfg->itr = aq_itr;
+	cfg->tx_itr = aq_itr_tx;
+	cfg->rx_itr = aq_itr_rx;
+
+	cfg->rxpageorder = AQ_CFG_RX_PAGEORDER;
+	cfg->is_rss = AQ_CFG_IS_RSS_DEF;
+	cfg->aq_rss.base_cpu_number = AQ_CFG_RSS_BASE_CPU_NUM_DEF;
+	cfg->fc.req = AQ_CFG_FC_MODE;
+	cfg->wol = AQ_CFG_WOL_MODES;
+
+	cfg->mtu = AQ_CFG_MTU_DEF;
+	cfg->link_speed_msk = AQ_CFG_SPEED_MSK;
+	cfg->is_autoneg = AQ_CFG_IS_AUTONEG_DEF;
+
+	cfg->is_lro = AQ_CFG_IS_LRO_DEF;
+	cfg->is_ptp = true;
+
+	/*descriptors */
+	cfg->rxds = min(cfg->aq_hw_caps->rxds_max, AQ_CFG_RXDS_DEF);
+	cfg->txds = min(cfg->aq_hw_caps->txds_max, AQ_CFG_TXDS_DEF);
+
+	aq_nic_cfg_update_num_vecs(self);
+
+	cfg->irq_type = aq_pci_func_get_irq_type(self);
+
+	if ((cfg->irq_type == AQ_HW_IRQ_LEGACY) ||
+	    (cfg->aq_hw_caps->vecs == 1U) ||
+	    (cfg->vecs == 1U)) {
+		cfg->is_rss = 0U;
+		cfg->vecs = 1U;
+	}
+
+	/* Check if we have enough vectors allocated for
+	 * link status IRQ. If no - we'll know link state from
+	 * slower service task.
+	 */
+	if (AQ_HW_SERVICE_IRQS > 0 && cfg->vecs + 1 <= self->irqvecs)
+		cfg->link_irq_vec = cfg->vecs;
+	else
+		cfg->link_irq_vec = 0;
+
+	cfg->link_speed_msk &= cfg->aq_hw_caps->link_speed_msk;
+	cfg->features = cfg->aq_hw_caps->hw_features;
+	cfg->is_vlan_rx_strip = !!(cfg->features & NETIF_F_HW_VLAN_CTAG_RX);
+	cfg->is_vlan_tx_insert = !!(cfg->features & NETIF_F_HW_VLAN_CTAG_TX);
+	cfg->is_vlan_force_promisc = true;
+
+	for (i = 0; i < sizeof(cfg->prio_tc_map); i++)
+		cfg->prio_tc_map[i] = cfg->tcs * i / 8;
+}
+
+static int aq_nic_update_link_status(struct aq_nic_s *self)
+{
+	int err = self->aq_fw_ops->update_link_status(self->aq_hw);
+	u32 fc = 0;
+
+	if (err)
+		return err;
+
+	if (self->aq_fw_ops->get_flow_control)
+		self->aq_fw_ops->get_flow_control(self->aq_hw, &fc);
+	self->aq_nic_cfg.fc.cur = fc;
+
+	if (self->link_status.mbps != self->aq_hw->aq_link_status.mbps) {
+		netdev_info(self->ndev, "%s: link change old %d new %d\n",
+			    AQ_CFG_DRV_NAME, self->link_status.mbps,
+			    self->aq_hw->aq_link_status.mbps);
+		aq_nic_update_interrupt_moderation_settings(self);
+
+		if (self->aq_ptp) {
+			aq_ptp_clock_init(self);
+			aq_ptp_tm_offset_set(self,
+					     self->aq_hw->aq_link_status.mbps);
+			aq_ptp_link_change(self);
+		}
+
+		/* Driver has to update flow control settings on RX block
+		 * on any link event.
+		 * We should query FW whether it negotiated FC.
+		 */
+		if (self->aq_hw_ops->hw_set_fc)
+			self->aq_hw_ops->hw_set_fc(self->aq_hw, fc, 0);
+	}
+
+	self->link_status = self->aq_hw->aq_link_status;
+	if (!netif_carrier_ok(self->ndev) && self->link_status.mbps) {
+		aq_utils_obj_set(&self->flags,
+				 AQ_NIC_FLAG_STARTED);
+		aq_utils_obj_clear(&self->flags,
+				   AQ_NIC_LINK_DOWN);
+		netif_carrier_on(self->ndev);
+#if IS_ENABLED(CONFIG_MACSEC)
+		aq_macsec_enable(self);
+#endif
+		if (self->aq_hw_ops->hw_tc_rate_limit_set)
+			self->aq_hw_ops->hw_tc_rate_limit_set(self->aq_hw);
+
+		netif_tx_wake_all_queues(self->ndev);
+	}
+	if (netif_carrier_ok(self->ndev) && !self->link_status.mbps) {
+		netif_carrier_off(self->ndev);
+		netif_tx_disable(self->ndev);
+		aq_utils_obj_set(&self->flags, AQ_NIC_LINK_DOWN);
+	}
+
+	return 0;
+}
+
+static irqreturn_t aq_linkstate_threaded_isr(int irq, void *private)
+{
+	struct aq_nic_s *self = private;
+
+	if (!self)
+		return IRQ_NONE;
+
+	aq_nic_update_link_status(self);
+
+	self->aq_hw_ops->hw_irq_enable(self->aq_hw,
+				       BIT(self->aq_nic_cfg.link_irq_vec));
+
+	return IRQ_HANDLED;
+}
+
+static void aq_nic_service_task(struct work_struct *work)
+{
+	struct aq_nic_s *self = container_of(work, struct aq_nic_s,
+					     service_task);
+	int err;
+
+	aq_ptp_service_task(self);
+
+	if (aq_utils_obj_test(&self->flags, AQ_NIC_FLAGS_IS_NOT_READY))
+		return;
+
+	err = aq_nic_update_link_status(self);
+	if (err)
+		return;
+
+#if IS_ENABLED(CONFIG_MACSEC)
+	aq_macsec_work(self);
+#endif
+
+	mutex_lock(&self->fwreq_mutex);
+	if (self->aq_fw_ops->update_stats)
+		self->aq_fw_ops->update_stats(self->aq_hw);
+	mutex_unlock(&self->fwreq_mutex);
+
+	aq_nic_update_ndev_stats(self);
+}
+
+static void aq_nic_service_timer_cb(struct timer_list *t)
+{
+	struct aq_nic_s *self = from_timer(self, t, service_timer);
+
+	mod_timer(&self->service_timer,
+		  jiffies + AQ_CFG_SERVICE_TIMER_INTERVAL);
+
+	aq_ndev_schedule_work(&self->service_task);
+}
+
+static void aq_nic_polling_timer_cb(struct timer_list *t)
+{
+	struct aq_nic_s *self = from_timer(self, t, polling_timer);
+	unsigned int i = 0U;
+
+	for (i = 0U; self->aq_vecs > i; ++i)
+		aq_vec_isr(i, (void *)self->aq_vec[i]);
+
+	mod_timer(&self->polling_timer, jiffies +
+		  AQ_CFG_POLLING_TIMER_INTERVAL);
+}
+
+static int aq_nic_hw_prepare(struct aq_nic_s *self)
+{
+	int err = 0;
+
+	err = self->aq_hw_ops->hw_soft_reset(self->aq_hw);
+	if (err)
+		goto exit;
+
+	err = self->aq_hw_ops->hw_prepare(self->aq_hw, &self->aq_fw_ops);
+
+exit:
+	return err;
+}
+
+static bool aq_nic_is_valid_ether_addr(const u8 *addr)
+{
+	/* Some engineering samples of Aquantia NICs are provisioned with a
+	 * partially populated MAC, which is still invalid.
+	 */
+	return !(addr[0] == 0 && addr[1] == 0 && addr[2] == 0);
+}
+
+int aq_nic_ndev_register(struct aq_nic_s *self)
+{
+	u8 addr[ETH_ALEN];
+	int err = 0;
+
+	if (!self->ndev) {
+		err = -EINVAL;
+		goto err_exit;
+	}
+
+	err = aq_nic_hw_prepare(self);
+	if (err)
+		goto err_exit;
+
+#if IS_ENABLED(CONFIG_MACSEC)
+	aq_macsec_init(self);
+#endif
+
+	if (platform_get_ethdev_address(&self->pdev->dev, self->ndev) != 0) {
+		// If DT has none or an invalid one, ask device for MAC address
+		mutex_lock(&self->fwreq_mutex);
+		err = self->aq_fw_ops->get_mac_permanent(self->aq_hw, addr);
+		mutex_unlock(&self->fwreq_mutex);
+
+		if (err)
+			goto err_exit;
+
+		if (is_valid_ether_addr(addr) &&
+		    aq_nic_is_valid_ether_addr(addr)) {
+			eth_hw_addr_set(self->ndev, addr);
+		} else {
+			netdev_warn(self->ndev, "MAC is invalid, will use random.");
+			eth_hw_addr_random(self->ndev);
+		}
+	}
+
+#if defined(AQ_CFG_MAC_ADDR_PERMANENT)
+	{
+		static u8 mac_addr_permanent[] = AQ_CFG_MAC_ADDR_PERMANENT;
+
+		eth_hw_addr_set(self->ndev, mac_addr_permanent);
+	}
+#endif
+
+	for (self->aq_vecs = 0; self->aq_vecs < aq_nic_get_cfg(self)->vecs;
+	     self->aq_vecs++) {
+		self->aq_vec[self->aq_vecs] =
+		    aq_vec_alloc(self, self->aq_vecs, aq_nic_get_cfg(self));
+		if (!self->aq_vec[self->aq_vecs]) {
+			err = -ENOMEM;
+			goto err_exit;
+		}
+	}
+
+	netif_carrier_off(self->ndev);
+
+	netif_tx_disable(self->ndev);
+
+	err = register_netdev(self->ndev);
+	if (err)
+		goto err_exit;
+
+err_exit:
+#if IS_ENABLED(CONFIG_MACSEC)
+	if (err)
+		aq_macsec_free(self);
+#endif
+	return err;
+}
+
+void aq_nic_ndev_init(struct aq_nic_s *self)
+{
+	const struct aq_hw_caps_s *aq_hw_caps = self->aq_nic_cfg.aq_hw_caps;
+	struct aq_nic_cfg_s *aq_nic_cfg = &self->aq_nic_cfg;
+
+	self->ndev->hw_features |= aq_hw_caps->hw_features;
+	self->ndev->features = aq_hw_caps->hw_features;
+	self->ndev->vlan_features |= NETIF_F_HW_CSUM | NETIF_F_RXCSUM |
+				     NETIF_F_RXHASH | NETIF_F_SG |
+				     NETIF_F_LRO | NETIF_F_TSO | NETIF_F_TSO6;
+	self->ndev->gso_partial_features = NETIF_F_GSO_UDP_L4;
+	self->ndev->priv_flags = aq_hw_caps->hw_priv_flags;
+	self->ndev->priv_flags |= IFF_LIVE_ADDR_CHANGE;
+
+	self->msg_enable = NETIF_MSG_DRV | NETIF_MSG_LINK;
+	self->ndev->mtu = aq_nic_cfg->mtu - ETH_HLEN;
+	self->ndev->max_mtu = aq_hw_caps->mtu - ETH_FCS_LEN - ETH_HLEN;
+
+}
+
+void aq_nic_set_tx_ring(struct aq_nic_s *self, unsigned int idx,
+			struct aq_ring_s *ring)
+{
+	self->aq_ring_tx[idx] = ring;
+}
+
+struct net_device *aq_nic_get_ndev(struct aq_nic_s *self)
+{
+	return self->ndev;
+}
+
+int aq_nic_init(struct aq_nic_s *self)
+{
+	struct aq_vec_s *aq_vec = NULL;
+	unsigned int i = 0U;
+	int err = 0;
+
+	self->power_state = AQ_HW_POWER_STATE_D0;
+	mutex_lock(&self->fwreq_mutex);
+	err = self->aq_hw_ops->hw_reset(self->aq_hw);
+	mutex_unlock(&self->fwreq_mutex);
+	if (err < 0)
+		goto err_exit;
+	/* Restore default settings */
+	aq_nic_set_downshift(self, self->aq_nic_cfg.downshift_counter);
+	aq_nic_set_media_detect(self, self->aq_nic_cfg.is_media_detect ?
+				AQ_HW_MEDIA_DETECT_CNT : 0);
+
+	err = self->aq_hw_ops->hw_init(self->aq_hw,
+				       aq_nic_get_ndev(self)->dev_addr);
+	if (err < 0)
+		goto err_exit;
+
+	if (ATL_HW_IS_CHIP_FEATURE(self->aq_hw, ATLANTIC) &&
+	    self->aq_nic_cfg.aq_hw_caps->media_type == AQ_HW_MEDIA_TYPE_TP) {
+		self->aq_hw->phy_id = HW_ATL_PHY_ID_MAX;
+		err = aq_phy_init(self->aq_hw);
+
+		/* Disable the PTP on NICs where it's known to cause datapath
+		 * problems.
+		 * Ideally this should have been done by PHY provisioning, but
+		 * many units have been shipped with enabled PTP block already.
+		 */
+		if (self->aq_nic_cfg.aq_hw_caps->quirks & AQ_NIC_QUIRK_BAD_PTP)
+			if (self->aq_hw->phy_id != HW_ATL_PHY_ID_MAX)
+				aq_phy_disable_ptp(self->aq_hw);
+	}
+
+	for (i = 0U; i < self->aq_vecs; i++) {
+		aq_vec = self->aq_vec[i];
+		err = aq_vec_ring_alloc(aq_vec, self, i,
+					aq_nic_get_cfg(self));
+		if (err)
+			goto err_exit;
+
+		aq_vec_init(aq_vec, self->aq_hw_ops, self->aq_hw);
+	}
+
+	if (aq_nic_get_cfg(self)->is_ptp) {
+		err = aq_ptp_init(self, self->irqvecs - 1);
+		if (err < 0)
+			goto err_exit;
+
+		err = aq_ptp_ring_alloc(self);
+		if (err < 0)
+			goto err_exit;
+
+		err = aq_ptp_ring_init(self);
+		if (err < 0)
+			goto err_exit;
+	}
+
+	netif_carrier_off(self->ndev);
+
+err_exit:
+	return err;
+}
+
+int aq_nic_start(struct aq_nic_s *self)
+{
+	struct aq_vec_s *aq_vec = NULL;
+	struct aq_nic_cfg_s *cfg;
+	unsigned int i = 0U;
+	int err = 0;
+
+	cfg = aq_nic_get_cfg(self);
+
+	err = self->aq_hw_ops->hw_multicast_list_set(self->aq_hw,
+						     self->mc_list.ar,
+						     self->mc_list.count);
+	if (err < 0)
+		goto err_exit;
+
+	err = self->aq_hw_ops->hw_packet_filter_set(self->aq_hw,
+						    self->packet_filter);
+	if (err < 0)
+		goto err_exit;
+
+	for (i = 0U; self->aq_vecs > i; ++i) {
+		aq_vec = self->aq_vec[i];
+		err = aq_vec_start(aq_vec);
+		if (err < 0)
+			goto err_exit;
+	}
+
+	err = aq_ptp_ring_start(self);
+	if (err < 0)
+		goto err_exit;
+
+	aq_nic_set_loopback(self);
+
+	err = self->aq_hw_ops->hw_start(self->aq_hw);
+	if (err < 0)
+		goto err_exit;
+
+	err = aq_nic_update_interrupt_moderation_settings(self);
+	if (err)
+		goto err_exit;
+
+	INIT_WORK(&self->service_task, aq_nic_service_task);
+
+	timer_setup(&self->service_timer, aq_nic_service_timer_cb, 0);
+	aq_nic_service_timer_cb(&self->service_timer);
+
+	if (cfg->is_polling) {
+		timer_setup(&self->polling_timer, aq_nic_polling_timer_cb, 0);
+		mod_timer(&self->polling_timer, jiffies +
+			  AQ_CFG_POLLING_TIMER_INTERVAL);
+	} else {
+		for (i = 0U; self->aq_vecs > i; ++i) {
+			aq_vec = self->aq_vec[i];
+			err = aq_pci_func_alloc_irq(self, i, self->ndev->name,
+						    aq_vec_isr, aq_vec,
+						    aq_vec_get_affinity_mask(aq_vec));
+			if (err < 0)
+				goto err_exit;
+		}
+
+		err = aq_ptp_irq_alloc(self);
+		if (err < 0)
+			goto err_exit;
+
+		if (cfg->link_irq_vec) {
+			int irqvec = pci_irq_vector(self->pdev,
+						    cfg->link_irq_vec);
+			err = request_threaded_irq(irqvec, NULL,
+						   aq_linkstate_threaded_isr,
+						   IRQF_SHARED | IRQF_ONESHOT,
+						   self->ndev->name, self);
+			if (err < 0)
+				goto err_exit;
+			self->msix_entry_mask |= (1 << cfg->link_irq_vec);
+		}
+
+		err = self->aq_hw_ops->hw_irq_enable(self->aq_hw,
+						     AQ_CFG_IRQ_MASK);
+		if (err < 0)
+			goto err_exit;
+	}
+
+	err = netif_set_real_num_tx_queues(self->ndev,
+					   self->aq_vecs * cfg->tcs);
+	if (err < 0)
+		goto err_exit;
+
+	err = netif_set_real_num_rx_queues(self->ndev,
+					   self->aq_vecs * cfg->tcs);
+	if (err < 0)
+		goto err_exit;
+
+	for (i = 0; i < cfg->tcs; i++) {
+		u16 offset = self->aq_vecs * i;
+
+		netdev_set_tc_queue(self->ndev, i, self->aq_vecs, offset);
+	}
+	netif_tx_start_all_queues(self->ndev);
+
+err_exit:
+	return err;
+}
+
+static unsigned int aq_nic_map_xdp(struct aq_nic_s *self,
+				   struct xdp_frame *xdpf,
+				   struct aq_ring_s *ring)
+{
+	struct device *dev = aq_nic_get_dev(self);
+	struct aq_ring_buff_s *first = NULL;
+	unsigned int dx = ring->sw_tail;
+	struct aq_ring_buff_s *dx_buff;
+	struct skb_shared_info *sinfo;
+	unsigned int frag_count = 0U;
+	unsigned int nr_frags = 0U;
+	unsigned int ret = 0U;
+	u16 total_len;
+
+	dx_buff = &ring->buff_ring[dx];
+	dx_buff->flags = 0U;
+
+	sinfo = xdp_get_shared_info_from_frame(xdpf);
+	total_len = xdpf->len;
+	dx_buff->len = total_len;
+	if (xdp_frame_has_frags(xdpf)) {
+		nr_frags = sinfo->nr_frags;
+		total_len += sinfo->xdp_frags_size;
+	}
+	dx_buff->pa = dma_map_single(dev, xdpf->data, dx_buff->len,
+				     DMA_TO_DEVICE);
+
+	if (unlikely(dma_mapping_error(dev, dx_buff->pa)))
+		goto exit;
+
+	first = dx_buff;
+	dx_buff->len_pkt = total_len;
+	dx_buff->is_sop = 1U;
+	dx_buff->is_mapped = 1U;
+	++ret;
+
+	for (; nr_frags--; ++frag_count) {
+		skb_frag_t *frag = &sinfo->frags[frag_count];
+		unsigned int frag_len = skb_frag_size(frag);
+		unsigned int buff_offset = 0U;
+		unsigned int buff_size = 0U;
+		dma_addr_t frag_pa;
+
+		while (frag_len) {
+			if (frag_len > AQ_CFG_TX_FRAME_MAX)
+				buff_size = AQ_CFG_TX_FRAME_MAX;
+			else
+				buff_size = frag_len;
+
+			frag_pa = skb_frag_dma_map(dev, frag, buff_offset,
+						   buff_size, DMA_TO_DEVICE);
+
+			if (unlikely(dma_mapping_error(dev, frag_pa)))
+				goto mapping_error;
+
+			dx = aq_ring_next_dx(ring, dx);
+			dx_buff = &ring->buff_ring[dx];
+
+			dx_buff->flags = 0U;
+			dx_buff->len = buff_size;
+			dx_buff->pa = frag_pa;
+			dx_buff->is_mapped = 1U;
+			dx_buff->eop_index = 0xffffU;
+
+			frag_len -= buff_size;
+			buff_offset += buff_size;
+
+			++ret;
+		}
+	}
+
+	first->eop_index = dx;
+	dx_buff->is_eop = 1U;
+	dx_buff->skb = NULL;
+	dx_buff->xdpf = xdpf;
+	goto exit;
+
+mapping_error:
+	for (dx = ring->sw_tail;
+	     ret > 0;
+	     --ret, dx = aq_ring_next_dx(ring, dx)) {
+		dx_buff = &ring->buff_ring[dx];
+
+		if (!dx_buff->pa)
+			continue;
+		if (unlikely(dx_buff->is_sop))
+			dma_unmap_single(dev, dx_buff->pa, dx_buff->len,
+					 DMA_TO_DEVICE);
+		else
+			dma_unmap_page(dev, dx_buff->pa, dx_buff->len,
+				       DMA_TO_DEVICE);
+	}
+
+exit:
+	return ret;
+}
+
+unsigned int aq_nic_map_skb(struct aq_nic_s *self, struct sk_buff *skb,
+			    struct aq_ring_s *ring)
+{
+	unsigned int nr_frags = skb_shinfo(skb)->nr_frags;
+	struct aq_nic_cfg_s *cfg = aq_nic_get_cfg(self);
+	struct device *dev = aq_nic_get_dev(self);
+	struct aq_ring_buff_s *first = NULL;
+	u8 ipver = ip_hdr(skb)->version;
+	struct aq_ring_buff_s *dx_buff;
+	bool need_context_tag = false;
+	unsigned int frag_count = 0U;
+	unsigned int ret = 0U;
+	unsigned int dx;
+	u8 l4proto = 0;
+
+	if (ipver == 4)
+		l4proto = ip_hdr(skb)->protocol;
+	else if (ipver == 6)
+		l4proto = ipv6_hdr(skb)->nexthdr;
+
+	dx = ring->sw_tail;
+	dx_buff = &ring->buff_ring[dx];
+	dx_buff->flags = 0U;
+
+	if (unlikely(skb_is_gso(skb))) {
+		dx_buff->mss = skb_shinfo(skb)->gso_size;
+		if (l4proto == IPPROTO_TCP) {
+			dx_buff->is_gso_tcp = 1U;
+			dx_buff->len_l4 = tcp_hdrlen(skb);
+		} else if (l4proto == IPPROTO_UDP) {
+			dx_buff->is_gso_udp = 1U;
+			dx_buff->len_l4 = sizeof(struct udphdr);
+			/* UDP GSO Hardware does not replace packet length. */
+			udp_hdr(skb)->len = htons(dx_buff->mss +
+						  dx_buff->len_l4);
+		} else {
+			WARN_ONCE(true, "Bad GSO mode");
+			goto exit;
+		}
+		dx_buff->len_pkt = skb->len;
+		dx_buff->len_l2 = ETH_HLEN;
+		dx_buff->len_l3 = skb_network_header_len(skb);
+		dx_buff->eop_index = 0xffffU;
+		dx_buff->is_ipv6 = (ipver == 6);
+		need_context_tag = true;
+	}
+
+	if (cfg->is_vlan_tx_insert && skb_vlan_tag_present(skb)) {
+		dx_buff->vlan_tx_tag = skb_vlan_tag_get(skb);
+		dx_buff->len_pkt = skb->len;
+		dx_buff->is_vlan = 1U;
+		need_context_tag = true;
+	}
+
+	if (need_context_tag) {
+		dx = aq_ring_next_dx(ring, dx);
+		dx_buff = &ring->buff_ring[dx];
+		dx_buff->flags = 0U;
+		++ret;
+	}
+
+	dx_buff->len = skb_headlen(skb);
+	dx_buff->pa = dma_map_single(dev,
+				     skb->data,
+				     dx_buff->len,
+				     DMA_TO_DEVICE);
+
+	if (unlikely(dma_mapping_error(dev, dx_buff->pa))) {
+		ret = 0;
+		goto exit;
+	}
+
+	first = dx_buff;
+	dx_buff->len_pkt = skb->len;
+	dx_buff->is_sop = 1U;
+	dx_buff->is_mapped = 1U;
+	++ret;
+
+	if (skb->ip_summed == CHECKSUM_PARTIAL) {
+		dx_buff->is_ip_cso = (htons(ETH_P_IP) == skb->protocol);
+		dx_buff->is_tcp_cso = (l4proto == IPPROTO_TCP);
+		dx_buff->is_udp_cso = (l4proto == IPPROTO_UDP);
+	}
+
+	for (; nr_frags--; ++frag_count) {
+		unsigned int frag_len = 0U;
+		unsigned int buff_offset = 0U;
+		unsigned int buff_size = 0U;
+		dma_addr_t frag_pa;
+		skb_frag_t *frag = &skb_shinfo(skb)->frags[frag_count];
+
+		frag_len = skb_frag_size(frag);
+
+		while (frag_len) {
+			if (frag_len > AQ_CFG_TX_FRAME_MAX)
+				buff_size = AQ_CFG_TX_FRAME_MAX;
+			else
+				buff_size = frag_len;
+
+			frag_pa = skb_frag_dma_map(dev,
+						   frag,
+						   buff_offset,
+						   buff_size,
+						   DMA_TO_DEVICE);
+
+			if (unlikely(dma_mapping_error(dev,
+						       frag_pa)))
+				goto mapping_error;
+
+			dx = aq_ring_next_dx(ring, dx);
+			dx_buff = &ring->buff_ring[dx];
+
+			dx_buff->flags = 0U;
+			dx_buff->len = buff_size;
+			dx_buff->pa = frag_pa;
+			dx_buff->is_mapped = 1U;
+			dx_buff->eop_index = 0xffffU;
+
+			frag_len -= buff_size;
+			buff_offset += buff_size;
+
+			++ret;
+		}
+	}
+
+	first->eop_index = dx;
+	dx_buff->is_eop = 1U;
+	dx_buff->skb = skb;
+	dx_buff->xdpf = NULL;
+	goto exit;
+
+mapping_error:
+	for (dx = ring->sw_tail;
+	     ret > 0;
+	     --ret, dx = aq_ring_next_dx(ring, dx)) {
+		dx_buff = &ring->buff_ring[dx];
+
+		if (!(dx_buff->is_gso_tcp || dx_buff->is_gso_udp) &&
+		    !dx_buff->is_vlan && dx_buff->pa) {
+			if (unlikely(dx_buff->is_sop)) {
+				dma_unmap_single(dev,
+						 dx_buff->pa,
+						 dx_buff->len,
+						 DMA_TO_DEVICE);
+			} else {
+				dma_unmap_page(dev,
+					       dx_buff->pa,
+					       dx_buff->len,
+					       DMA_TO_DEVICE);
+			}
+		}
+	}
+
+exit:
+	return ret;
+}
+
+int aq_nic_xmit_xdpf(struct aq_nic_s *aq_nic, struct aq_ring_s *tx_ring,
+		     struct xdp_frame *xdpf)
+{
+	u16 queue_index = AQ_NIC_RING2QMAP(aq_nic, tx_ring->idx);
+	struct net_device *ndev = aq_nic_get_ndev(aq_nic);
+	struct skb_shared_info *sinfo;
+	int cpu = smp_processor_id();
+	int err = NETDEV_TX_BUSY;
+	struct netdev_queue *nq;
+	unsigned int frags = 1;
+
+	if (xdp_frame_has_frags(xdpf)) {
+		sinfo = xdp_get_shared_info_from_frame(xdpf);
+		frags += sinfo->nr_frags;
+	}
+
+	if (frags > AQ_CFG_SKB_FRAGS_MAX)
+		return err;
+
+	nq = netdev_get_tx_queue(ndev, tx_ring->idx);
+	__netif_tx_lock(nq, cpu);
+
+	aq_ring_update_queue_state(tx_ring);
+
+	/* Above status update may stop the queue. Check this. */
+	if (__netif_subqueue_stopped(aq_nic_get_ndev(aq_nic), queue_index))
+		goto out;
+
+	frags = aq_nic_map_xdp(aq_nic, xdpf, tx_ring);
+	if (likely(frags))
+		err = aq_nic->aq_hw_ops->hw_ring_tx_xmit(aq_nic->aq_hw, tx_ring,
+							 frags);
+out:
+	__netif_tx_unlock(nq);
+
+	return err;
+}
+
+int aq_nic_xmit(struct aq_nic_s *self, struct sk_buff *skb)
+{
+	struct aq_nic_cfg_s *cfg = aq_nic_get_cfg(self);
+	unsigned int vec = skb->queue_mapping % cfg->vecs;
+	unsigned int tc = skb->queue_mapping / cfg->vecs;
+	struct aq_ring_s *ring = NULL;
+	unsigned int frags = 0U;
+	int err = NETDEV_TX_OK;
+
+	frags = skb_shinfo(skb)->nr_frags + 1;
+
+	ring = self->aq_ring_tx[AQ_NIC_CFG_TCVEC2RING(cfg, tc, vec)];
+
+	if (frags > AQ_CFG_SKB_FRAGS_MAX) {
+		dev_kfree_skb_any(skb);
+		goto err_exit;
+	}
+
+	aq_ring_update_queue_state(ring);
+
+	if (cfg->priv_flags & BIT(AQ_HW_LOOPBACK_DMA_NET)) {
+		err = NETDEV_TX_BUSY;
+		goto err_exit;
+	}
+
+	/* Above status update may stop the queue. Check this. */
+	if (__netif_subqueue_stopped(self->ndev,
+				     AQ_NIC_RING2QMAP(self, ring->idx))) {
+		err = NETDEV_TX_BUSY;
+		goto err_exit;
+	}
+
+	frags = aq_nic_map_skb(self, skb, ring);
+
+	if (likely(frags)) {
+		err = self->aq_hw_ops->hw_ring_tx_xmit(self->aq_hw,
+						       ring, frags);
+	} else {
+		err = NETDEV_TX_BUSY;
+	}
+
+err_exit:
+	return err;
+}
+
+int aq_nic_update_interrupt_moderation_settings(struct aq_nic_s *self)
+{
+	return self->aq_hw_ops->hw_interrupt_moderation_set(self->aq_hw);
+}
+
+int aq_nic_set_packet_filter(struct aq_nic_s *self, unsigned int flags)
+{
+	int err = 0;
+
+	err = self->aq_hw_ops->hw_packet_filter_set(self->aq_hw, flags);
+	if (err < 0)
+		goto err_exit;
+
+	self->packet_filter = flags;
+
+err_exit:
+	return err;
+}
+
+int aq_nic_set_multicast_list(struct aq_nic_s *self, struct net_device *ndev)
+{
+	const struct aq_hw_ops *hw_ops = self->aq_hw_ops;
+	struct aq_nic_cfg_s *cfg = &self->aq_nic_cfg;
+	unsigned int packet_filter = ndev->flags;
+	struct netdev_hw_addr *ha = NULL;
+	unsigned int i = 0U;
+	int err = 0;
+
+	self->mc_list.count = 0;
+	if (netdev_uc_count(ndev) > AQ_HW_MULTICAST_ADDRESS_MAX) {
+		packet_filter |= IFF_PROMISC;
+	} else {
+		netdev_for_each_uc_addr(ha, ndev) {
+			ether_addr_copy(self->mc_list.ar[i++], ha->addr);
+		}
+	}
+
+	cfg->is_mc_list_enabled = !!(packet_filter & IFF_MULTICAST);
+	if (cfg->is_mc_list_enabled) {
+		if (i + netdev_mc_count(ndev) > AQ_HW_MULTICAST_ADDRESS_MAX) {
+			packet_filter |= IFF_ALLMULTI;
+		} else {
+			netdev_for_each_mc_addr(ha, ndev) {
+				ether_addr_copy(self->mc_list.ar[i++],
+						ha->addr);
+			}
+		}
+	}
+
+	if (i > 0 && i <= AQ_HW_MULTICAST_ADDRESS_MAX) {
+		self->mc_list.count = i;
+		err = hw_ops->hw_multicast_list_set(self->aq_hw,
+						    self->mc_list.ar,
+						    self->mc_list.count);
+		if (err < 0)
+			return err;
+	}
+
+	return aq_nic_set_packet_filter(self, packet_filter);
+}
+
+int aq_nic_set_mtu(struct aq_nic_s *self, int new_mtu)
+{
+	self->aq_nic_cfg.mtu = new_mtu;
+
+	return 0;
+}
+
+int aq_nic_set_mac(struct aq_nic_s *self, struct net_device *ndev)
+{
+	return self->aq_hw_ops->hw_set_mac_address(self->aq_hw, ndev->dev_addr);
+}
+
+unsigned int aq_nic_get_link_speed(struct aq_nic_s *self)
+{
+	return self->link_status.mbps;
+}
+
+int aq_nic_get_regs(struct aq_nic_s *self, struct ethtool_regs *regs, void *p)
+{
+	u32 *regs_buff = p;
+	int err = 0;
+
+	if (unlikely(!self->aq_hw_ops->hw_get_regs))
+		return -EOPNOTSUPP;
+
+	regs->version = 1;
+
+	err = self->aq_hw_ops->hw_get_regs(self->aq_hw,
+					   self->aq_nic_cfg.aq_hw_caps,
+					   regs_buff);
+	if (err < 0)
+		goto err_exit;
+
+err_exit:
+	return err;
+}
+
+int aq_nic_get_regs_count(struct aq_nic_s *self)
+{
+	if (unlikely(!self->aq_hw_ops->hw_get_regs))
+		return 0;
+
+	return self->aq_nic_cfg.aq_hw_caps->mac_regs_count;
+}
+
+u64 *aq_nic_get_stats(struct aq_nic_s *self, u64 *data)
+{
+	struct aq_stats_s *stats;
+	unsigned int count = 0U;
+	unsigned int i = 0U;
+	unsigned int tc;
+
+	if (self->aq_fw_ops->update_stats) {
+		mutex_lock(&self->fwreq_mutex);
+		self->aq_fw_ops->update_stats(self->aq_hw);
+		mutex_unlock(&self->fwreq_mutex);
+	}
+	stats = self->aq_hw_ops->hw_get_hw_stats(self->aq_hw);
+
+	if (!stats)
+		goto err_exit;
+
+	data[i] = stats->uprc + stats->mprc + stats->bprc;
+	data[++i] = stats->uprc;
+	data[++i] = stats->mprc;
+	data[++i] = stats->bprc;
+	data[++i] = stats->erpt;
+	data[++i] = stats->uptc + stats->mptc + stats->bptc;
+	data[++i] = stats->uptc;
+	data[++i] = stats->mptc;
+	data[++i] = stats->bptc;
+	data[++i] = stats->ubrc;
+	data[++i] = stats->ubtc;
+	data[++i] = stats->mbrc;
+	data[++i] = stats->mbtc;
+	data[++i] = stats->bbrc;
+	data[++i] = stats->bbtc;
+	if (stats->brc)
+		data[++i] = stats->brc;
+	else
+		data[++i] = stats->ubrc + stats->mbrc + stats->bbrc;
+	if (stats->btc)
+		data[++i] = stats->btc;
+	else
+		data[++i] = stats->ubtc + stats->mbtc + stats->bbtc;
+	data[++i] = stats->dma_pkt_rc;
+	data[++i] = stats->dma_pkt_tc;
+	data[++i] = stats->dma_oct_rc;
+	data[++i] = stats->dma_oct_tc;
+	data[++i] = stats->dpc;
+
+	i++;
+
+	data += i;
+
+	for (tc = 0U; tc < self->aq_nic_cfg.tcs; tc++) {
+		for (i = 0U; self->aq_vecs > i; ++i) {
+			if (!self->aq_vec[i])
+				break;
+			data += count;
+			count = aq_vec_get_sw_stats(self->aq_vec[i], tc, data);
+		}
+	}
+
+	data += count;
+
+err_exit:
+	return data;
+}
+
+static void aq_nic_update_ndev_stats(struct aq_nic_s *self)
+{
+	struct aq_stats_s *stats = self->aq_hw_ops->hw_get_hw_stats(self->aq_hw);
+	struct net_device *ndev = self->ndev;
+
+	ndev->stats.rx_packets = stats->dma_pkt_rc;
+	ndev->stats.rx_bytes = stats->dma_oct_rc;
+	ndev->stats.rx_errors = stats->erpr;
+	ndev->stats.rx_dropped = stats->dpc;
+	ndev->stats.tx_packets = stats->dma_pkt_tc;
+	ndev->stats.tx_bytes = stats->dma_oct_tc;
+	ndev->stats.tx_errors = stats->erpt;
+	ndev->stats.multicast = stats->mprc;
+}
+
+void aq_nic_get_link_ksettings(struct aq_nic_s *self,
+			       struct ethtool_link_ksettings *cmd)
+{
+	u32 lp_link_speed_msk;
+
+	if (self->aq_nic_cfg.aq_hw_caps->media_type == AQ_HW_MEDIA_TYPE_FIBRE)
+		cmd->base.port = PORT_FIBRE;
+	else
+		cmd->base.port = PORT_TP;
+
+	cmd->base.duplex = DUPLEX_UNKNOWN;
+	if (self->link_status.mbps)
+		cmd->base.duplex = self->link_status.full_duplex ?
+				   DUPLEX_FULL : DUPLEX_HALF;
+	cmd->base.autoneg = self->aq_nic_cfg.is_autoneg;
+
+	ethtool_link_ksettings_zero_link_mode(cmd, supported);
+
+	if (self->aq_nic_cfg.aq_hw_caps->link_speed_msk & AQ_NIC_RATE_10G)
+		ethtool_link_ksettings_add_link_mode(cmd, supported,
+						     10000baseT_Full);
+
+	if (self->aq_nic_cfg.aq_hw_caps->link_speed_msk & AQ_NIC_RATE_5G)
+		ethtool_link_ksettings_add_link_mode(cmd, supported,
+						     5000baseT_Full);
+
+	if (self->aq_nic_cfg.aq_hw_caps->link_speed_msk & AQ_NIC_RATE_2G5)
+		ethtool_link_ksettings_add_link_mode(cmd, supported,
+						     2500baseT_Full);
+
+	if (self->aq_nic_cfg.aq_hw_caps->link_speed_msk & AQ_NIC_RATE_1G)
+		ethtool_link_ksettings_add_link_mode(cmd, supported,
+						     1000baseT_Full);
+
+	if (self->aq_nic_cfg.aq_hw_caps->link_speed_msk & AQ_NIC_RATE_1G_HALF)
+		ethtool_link_ksettings_add_link_mode(cmd, supported,
+						     1000baseT_Half);
+
+	if (self->aq_nic_cfg.aq_hw_caps->link_speed_msk & AQ_NIC_RATE_100M)
+		ethtool_link_ksettings_add_link_mode(cmd, supported,
+						     100baseT_Full);
+
+	if (self->aq_nic_cfg.aq_hw_caps->link_speed_msk & AQ_NIC_RATE_100M_HALF)
+		ethtool_link_ksettings_add_link_mode(cmd, supported,
+						     100baseT_Half);
+
+	if (self->aq_nic_cfg.aq_hw_caps->link_speed_msk & AQ_NIC_RATE_10M)
+		ethtool_link_ksettings_add_link_mode(cmd, supported,
+						     10baseT_Full);
+
+	if (self->aq_nic_cfg.aq_hw_caps->link_speed_msk & AQ_NIC_RATE_10M_HALF)
+		ethtool_link_ksettings_add_link_mode(cmd, supported,
+						     10baseT_Half);
+
+	if (self->aq_nic_cfg.aq_hw_caps->flow_control) {
+		ethtool_link_ksettings_add_link_mode(cmd, supported,
+						     Pause);
+		ethtool_link_ksettings_add_link_mode(cmd, supported,
+						     Asym_Pause);
+	}
+
+	ethtool_link_ksettings_add_link_mode(cmd, supported, Autoneg);
+
+	if (self->aq_nic_cfg.aq_hw_caps->media_type == AQ_HW_MEDIA_TYPE_FIBRE)
+		ethtool_link_ksettings_add_link_mode(cmd, supported, FIBRE);
+	else
+		ethtool_link_ksettings_add_link_mode(cmd, supported, TP);
+
+	ethtool_link_ksettings_zero_link_mode(cmd, advertising);
+
+	if (self->aq_nic_cfg.is_autoneg)
+		ethtool_link_ksettings_add_link_mode(cmd, advertising, Autoneg);
+
+	if (self->aq_nic_cfg.link_speed_msk & AQ_NIC_RATE_10G)
+		ethtool_link_ksettings_add_link_mode(cmd, advertising,
+						     10000baseT_Full);
+
+	if (self->aq_nic_cfg.link_speed_msk & AQ_NIC_RATE_5G)
+		ethtool_link_ksettings_add_link_mode(cmd, advertising,
+						     5000baseT_Full);
+
+	if (self->aq_nic_cfg.link_speed_msk & AQ_NIC_RATE_2G5)
+		ethtool_link_ksettings_add_link_mode(cmd, advertising,
+						     2500baseT_Full);
+
+	if (self->aq_nic_cfg.link_speed_msk & AQ_NIC_RATE_1G)
+		ethtool_link_ksettings_add_link_mode(cmd, advertising,
+						     1000baseT_Full);
+
+	if (self->aq_nic_cfg.link_speed_msk & AQ_NIC_RATE_1G_HALF)
+		ethtool_link_ksettings_add_link_mode(cmd, advertising,
+						     1000baseT_Half);
+
+	if (self->aq_nic_cfg.link_speed_msk & AQ_NIC_RATE_100M)
+		ethtool_link_ksettings_add_link_mode(cmd, advertising,
+						     100baseT_Full);
+
+	if (self->aq_nic_cfg.link_speed_msk & AQ_NIC_RATE_100M_HALF)
+		ethtool_link_ksettings_add_link_mode(cmd, advertising,
+						     100baseT_Half);
+
+	if (self->aq_nic_cfg.link_speed_msk & AQ_NIC_RATE_10M)
+		ethtool_link_ksettings_add_link_mode(cmd, advertising,
+						     10baseT_Full);
+
+	if (self->aq_nic_cfg.link_speed_msk & AQ_NIC_RATE_10M_HALF)
+		ethtool_link_ksettings_add_link_mode(cmd, advertising,
+						     10baseT_Half);
+
+	if (self->aq_nic_cfg.fc.cur & AQ_NIC_FC_RX)
+		ethtool_link_ksettings_add_link_mode(cmd, advertising,
+						     Pause);
+
+	/* Asym is when either RX or TX, but not both */
+	if (!!(self->aq_nic_cfg.fc.cur & AQ_NIC_FC_TX) ^
+	    !!(self->aq_nic_cfg.fc.cur & AQ_NIC_FC_RX))
+		ethtool_link_ksettings_add_link_mode(cmd, advertising,
+						     Asym_Pause);
+
+	if (self->aq_nic_cfg.aq_hw_caps->media_type == AQ_HW_MEDIA_TYPE_FIBRE)
+		ethtool_link_ksettings_add_link_mode(cmd, advertising, FIBRE);
+	else
+		ethtool_link_ksettings_add_link_mode(cmd, advertising, TP);
+
+	ethtool_link_ksettings_zero_link_mode(cmd, lp_advertising);
+	lp_link_speed_msk = self->aq_hw->aq_link_status.lp_link_speed_msk;
+
+	if (lp_link_speed_msk & AQ_NIC_RATE_10G)
+		ethtool_link_ksettings_add_link_mode(cmd, lp_advertising,
+						     10000baseT_Full);
+
+	if (lp_link_speed_msk & AQ_NIC_RATE_5G)
+		ethtool_link_ksettings_add_link_mode(cmd, lp_advertising,
+						     5000baseT_Full);
+
+	if (lp_link_speed_msk & AQ_NIC_RATE_2G5)
+		ethtool_link_ksettings_add_link_mode(cmd, lp_advertising,
+						     2500baseT_Full);
+
+	if (lp_link_speed_msk & AQ_NIC_RATE_1G)
+		ethtool_link_ksettings_add_link_mode(cmd, lp_advertising,
+						     1000baseT_Full);
+
+	if (lp_link_speed_msk & AQ_NIC_RATE_1G_HALF)
+		ethtool_link_ksettings_add_link_mode(cmd, lp_advertising,
+						     1000baseT_Half);
+
+	if (lp_link_speed_msk & AQ_NIC_RATE_100M)
+		ethtool_link_ksettings_add_link_mode(cmd, lp_advertising,
+						     100baseT_Full);
+
+	if (lp_link_speed_msk & AQ_NIC_RATE_100M_HALF)
+		ethtool_link_ksettings_add_link_mode(cmd, lp_advertising,
+						     100baseT_Half);
+
+	if (lp_link_speed_msk & AQ_NIC_RATE_10M)
+		ethtool_link_ksettings_add_link_mode(cmd, lp_advertising,
+						     10baseT_Full);
+
+	if (lp_link_speed_msk & AQ_NIC_RATE_10M_HALF)
+		ethtool_link_ksettings_add_link_mode(cmd, lp_advertising,
+						     10baseT_Half);
+
+	if (self->aq_hw->aq_link_status.lp_flow_control & AQ_NIC_FC_RX)
+		ethtool_link_ksettings_add_link_mode(cmd, lp_advertising,
+						     Pause);
+	if (!!(self->aq_hw->aq_link_status.lp_flow_control & AQ_NIC_FC_TX) ^
+	    !!(self->aq_hw->aq_link_status.lp_flow_control & AQ_NIC_FC_RX))
+		ethtool_link_ksettings_add_link_mode(cmd, lp_advertising,
+						     Asym_Pause);
+}
+
+int aq_nic_set_link_ksettings(struct aq_nic_s *self,
+			      const struct ethtool_link_ksettings *cmd)
+{
+	int fduplex = (cmd->base.duplex == DUPLEX_FULL);
+	u32 speed = cmd->base.speed;
+	u32 rate = 0U;
+	int err = 0;
+
+	if (!fduplex && speed > SPEED_1000) {
+		err = -EINVAL;
+		goto err_exit;
+	}
+
+	if (cmd->base.autoneg == AUTONEG_ENABLE) {
+		rate = self->aq_nic_cfg.aq_hw_caps->link_speed_msk;
+		self->aq_nic_cfg.is_autoneg = true;
+	} else {
+		switch (speed) {
+		case SPEED_10:
+			rate = fduplex ? AQ_NIC_RATE_10M : AQ_NIC_RATE_10M_HALF;
+			break;
+
+		case SPEED_100:
+			rate = fduplex ? AQ_NIC_RATE_100M
+				       : AQ_NIC_RATE_100M_HALF;
+			break;
+
+		case SPEED_1000:
+			rate = fduplex ? AQ_NIC_RATE_1G : AQ_NIC_RATE_1G_HALF;
+			break;
+
+		case SPEED_2500:
+			rate = AQ_NIC_RATE_2G5;
+			break;
+
+		case SPEED_5000:
+			rate = AQ_NIC_RATE_5G;
+			break;
+
+		case SPEED_10000:
+			rate = AQ_NIC_RATE_10G;
+			break;
+
+		default:
+			err = -1;
+			goto err_exit;
+		}
+		if (!(self->aq_nic_cfg.aq_hw_caps->link_speed_msk & rate)) {
+			err = -1;
+			goto err_exit;
+		}
+
+		self->aq_nic_cfg.is_autoneg = false;
+	}
+
+	mutex_lock(&self->fwreq_mutex);
+	err = self->aq_fw_ops->set_link_speed(self->aq_hw, rate);
+	mutex_unlock(&self->fwreq_mutex);
+	if (err < 0)
+		goto err_exit;
+
+	self->aq_nic_cfg.link_speed_msk = rate;
+
+err_exit:
+	return err;
+}
+
+struct aq_nic_cfg_s *aq_nic_get_cfg(struct aq_nic_s *self)
+{
+	return &self->aq_nic_cfg;
+}
+
+u32 aq_nic_get_fw_version(struct aq_nic_s *self)
+{
+	return self->aq_hw_ops->hw_get_fw_version(self->aq_hw);
+}
+
+int aq_nic_set_loopback(struct aq_nic_s *self)
+{
+	struct aq_nic_cfg_s *cfg = &self->aq_nic_cfg;
+
+	if (!self->aq_hw_ops->hw_set_loopback ||
+	    !self->aq_fw_ops->set_phyloopback)
+		return -EOPNOTSUPP;
+
+	mutex_lock(&self->fwreq_mutex);
+	self->aq_hw_ops->hw_set_loopback(self->aq_hw,
+					 AQ_HW_LOOPBACK_DMA_SYS,
+					 !!(cfg->priv_flags &
+					    BIT(AQ_HW_LOOPBACK_DMA_SYS)));
+
+	self->aq_hw_ops->hw_set_loopback(self->aq_hw,
+					 AQ_HW_LOOPBACK_PKT_SYS,
+					 !!(cfg->priv_flags &
+					    BIT(AQ_HW_LOOPBACK_PKT_SYS)));
+
+	self->aq_hw_ops->hw_set_loopback(self->aq_hw,
+					 AQ_HW_LOOPBACK_DMA_NET,
+					 !!(cfg->priv_flags &
+					    BIT(AQ_HW_LOOPBACK_DMA_NET)));
+
+	self->aq_fw_ops->set_phyloopback(self->aq_hw,
+					 AQ_HW_LOOPBACK_PHYINT_SYS,
+					 !!(cfg->priv_flags &
+					    BIT(AQ_HW_LOOPBACK_PHYINT_SYS)));
+
+	self->aq_fw_ops->set_phyloopback(self->aq_hw,
+					 AQ_HW_LOOPBACK_PHYEXT_SYS,
+					 !!(cfg->priv_flags &
+					    BIT(AQ_HW_LOOPBACK_PHYEXT_SYS)));
+	mutex_unlock(&self->fwreq_mutex);
+
+	return 0;
+}
+
+int aq_nic_stop(struct aq_nic_s *self)
+{
+	unsigned int i = 0U;
+
+	netif_tx_disable(self->ndev);
+	netif_carrier_off(self->ndev);
+
+	del_timer_sync(&self->service_timer);
+	cancel_work_sync(&self->service_task);
+
+	self->aq_hw_ops->hw_irq_disable(self->aq_hw, AQ_CFG_IRQ_MASK);
+
+	if (self->aq_nic_cfg.is_polling)
+		del_timer_sync(&self->polling_timer);
+	else
+		aq_pci_func_free_irqs(self);
+
+	aq_ptp_irq_free(self);
+
+	for (i = 0U; self->aq_vecs > i; ++i)
+		aq_vec_stop(self->aq_vec[i]);
+
+	aq_ptp_ring_stop(self);
+
+	return self->aq_hw_ops->hw_stop(self->aq_hw);
+}
+
+void aq_nic_set_power(struct aq_nic_s *self)
+{
+	if (self->power_state != AQ_HW_POWER_STATE_D0 ||
+	    self->aq_hw->aq_nic_cfg->wol)
+		if (likely(self->aq_fw_ops->set_power)) {
+			mutex_lock(&self->fwreq_mutex);
+			self->aq_fw_ops->set_power(self->aq_hw,
+						   self->power_state,
+						   self->ndev->dev_addr);
+			mutex_unlock(&self->fwreq_mutex);
+		}
+}
+
+void aq_nic_deinit(struct aq_nic_s *self, bool link_down)
+{
+	struct aq_vec_s *aq_vec = NULL;
+	unsigned int i = 0U;
+
+	if (!self)
+		goto err_exit;
+
+	for (i = 0U; i < self->aq_vecs; i++) {
+		aq_vec = self->aq_vec[i];
+		aq_vec_deinit(aq_vec);
+		aq_vec_ring_free(aq_vec);
+	}
+
+	aq_ptp_unregister(self);
+	aq_ptp_ring_deinit(self);
+	aq_ptp_ring_free(self);
+	aq_ptp_free(self);
+
+	if (likely(self->aq_fw_ops->deinit) && link_down) {
+		mutex_lock(&self->fwreq_mutex);
+		self->aq_fw_ops->deinit(self->aq_hw);
+		mutex_unlock(&self->fwreq_mutex);
+	}
+
+err_exit:;
+}
+
+void aq_nic_free_vectors(struct aq_nic_s *self)
+{
+	unsigned int i = 0U;
+
+	if (!self)
+		goto err_exit;
+
+	for (i = ARRAY_SIZE(self->aq_vec); i--;) {
+		if (self->aq_vec[i]) {
+			aq_vec_free(self->aq_vec[i]);
+			self->aq_vec[i] = NULL;
+		}
+	}
+
+err_exit:;
+}
+
+int aq_nic_realloc_vectors(struct aq_nic_s *self)
+{
+	struct aq_nic_cfg_s *cfg = aq_nic_get_cfg(self);
+
+	aq_nic_free_vectors(self);
+
+	for (self->aq_vecs = 0; self->aq_vecs < cfg->vecs; self->aq_vecs++) {
+		self->aq_vec[self->aq_vecs] = aq_vec_alloc(self, self->aq_vecs,
+							   cfg);
+		if (unlikely(!self->aq_vec[self->aq_vecs]))
+			return -ENOMEM;
+	}
+
+	return 0;
+}
+
+void aq_nic_shutdown(struct aq_nic_s *self)
+{
+	int err = 0;
+
+	if (!self->ndev)
+		return;
+
+	rtnl_lock();
+
+	netif_device_detach(self->ndev);
+
+	if (netif_running(self->ndev)) {
+		err = aq_nic_stop(self);
+		if (err < 0)
+			goto err_exit;
+	}
+	aq_nic_deinit(self, !self->aq_hw->aq_nic_cfg->wol);
+	aq_nic_set_power(self);
+
+err_exit:
+	rtnl_unlock();
+}
+
+u8 aq_nic_reserve_filter(struct aq_nic_s *self, enum aq_rx_filter_type type)
+{
+	u8 location = 0xFF;
+	u32 fltr_cnt;
+	u32 n_bit;
+
+	switch (type) {
+	case aq_rx_filter_ethertype:
+		location = AQ_RX_LAST_LOC_FETHERT - AQ_RX_FIRST_LOC_FETHERT -
+			   self->aq_hw_rx_fltrs.fet_reserved_count;
+		self->aq_hw_rx_fltrs.fet_reserved_count++;
+		break;
+	case aq_rx_filter_l3l4:
+		fltr_cnt = AQ_RX_LAST_LOC_FL3L4 - AQ_RX_FIRST_LOC_FL3L4;
+		n_bit = fltr_cnt - self->aq_hw_rx_fltrs.fl3l4.reserved_count;
+
+		self->aq_hw_rx_fltrs.fl3l4.active_ipv4 |= BIT(n_bit);
+		self->aq_hw_rx_fltrs.fl3l4.reserved_count++;
+		location = n_bit;
+		break;
+	default:
+		break;
+	}
+
+	return location;
+}
+
+void aq_nic_release_filter(struct aq_nic_s *self, enum aq_rx_filter_type type,
+			   u32 location)
+{
+	switch (type) {
+	case aq_rx_filter_ethertype:
+		self->aq_hw_rx_fltrs.fet_reserved_count--;
+		break;
+	case aq_rx_filter_l3l4:
+		self->aq_hw_rx_fltrs.fl3l4.reserved_count--;
+		self->aq_hw_rx_fltrs.fl3l4.active_ipv4 &= ~BIT(location);
+		break;
+	default:
+		break;
+	}
+}
+
+int aq_nic_set_downshift(struct aq_nic_s *self, int val)
+{
+	int err = 0;
+	struct aq_nic_cfg_s *cfg = &self->aq_nic_cfg;
+
+	if (!self->aq_fw_ops->set_downshift)
+		return -EOPNOTSUPP;
+
+	if (val > 15) {
+		netdev_err(self->ndev, "downshift counter should be <= 15\n");
+		return -EINVAL;
+	}
+	cfg->downshift_counter = val;
+
+	mutex_lock(&self->fwreq_mutex);
+	err = self->aq_fw_ops->set_downshift(self->aq_hw, cfg->downshift_counter);
+	mutex_unlock(&self->fwreq_mutex);
+
+	return err;
+}
+
+int aq_nic_set_media_detect(struct aq_nic_s *self, int val)
+{
+	struct aq_nic_cfg_s *cfg = &self->aq_nic_cfg;
+	int err = 0;
+
+	if (!self->aq_fw_ops->set_media_detect)
+		return -EOPNOTSUPP;
+
+	if (val > 0 && val != AQ_HW_MEDIA_DETECT_CNT) {
+		netdev_err(self->ndev, "EDPD on this device could have only fixed value of %d\n",
+			   AQ_HW_MEDIA_DETECT_CNT);
+		return -EINVAL;
+	}
+
+	mutex_lock(&self->fwreq_mutex);
+	err = self->aq_fw_ops->set_media_detect(self->aq_hw, !!val);
+	mutex_unlock(&self->fwreq_mutex);
+
+	/* msecs plays no role - configuration is always fixed in PHY */
+	if (!err)
+		cfg->is_media_detect = !!val;
+
+	return err;
+}
+
+int aq_nic_setup_tc_mqprio(struct aq_nic_s *self, u32 tcs, u8 *prio_tc_map)
+{
+	struct aq_nic_cfg_s *cfg = &self->aq_nic_cfg;
+	const unsigned int prev_vecs = cfg->vecs;
+	bool ndev_running;
+	int err = 0;
+	int i;
+
+	/* if already the same configuration or
+	 * disable request (tcs is 0) and we already is disabled
+	 */
+	if (tcs == cfg->tcs || (tcs == 0 && !cfg->is_qos))
+		return 0;
+
+	ndev_running = netif_running(self->ndev);
+	if (ndev_running)
+		dev_close(self->ndev);
+
+	cfg->tcs = tcs;
+	if (cfg->tcs == 0)
+		cfg->tcs = 1;
+	if (prio_tc_map)
+		memcpy(cfg->prio_tc_map, prio_tc_map, sizeof(cfg->prio_tc_map));
+	else
+		for (i = 0; i < sizeof(cfg->prio_tc_map); i++)
+			cfg->prio_tc_map[i] = cfg->tcs * i / 8;
+
+	cfg->is_qos = !!tcs;
+	cfg->is_ptp = (cfg->tcs <= AQ_HW_PTP_TC);
+	if (!cfg->is_ptp)
+		netdev_warn(self->ndev, "%s\n",
+			    "PTP is auto disabled due to requested TC count.");
+
+	netdev_set_num_tc(self->ndev, cfg->tcs);
+
+	/* Changing the number of TCs might change the number of vectors */
+	aq_nic_cfg_update_num_vecs(self);
+	if (prev_vecs != cfg->vecs) {
+		err = aq_nic_realloc_vectors(self);
+		if (err)
+			goto err_exit;
+	}
+
+	if (ndev_running)
+		err = dev_open(self->ndev, NULL);
+
+err_exit:
+	return err;
+}
+
+int aq_nic_setup_tc_max_rate(struct aq_nic_s *self, const unsigned int tc,
+			     const u32 max_rate)
+{
+	struct aq_nic_cfg_s *cfg = &self->aq_nic_cfg;
+
+	if (tc >= AQ_CFG_TCS_MAX)
+		return -EINVAL;
+
+	if (max_rate && max_rate < 10) {
+		netdev_warn(self->ndev,
+			"Setting %s to the minimum usable value of %dMbps.\n",
+			"max rate", 10);
+		cfg->tc_max_rate[tc] = 10;
+	} else {
+		cfg->tc_max_rate[tc] = max_rate;
+	}
+
+	return 0;
+}
+
+int aq_nic_setup_tc_min_rate(struct aq_nic_s *self, const unsigned int tc,
+			     const u32 min_rate)
+{
+	struct aq_nic_cfg_s *cfg = &self->aq_nic_cfg;
+
+	if (tc >= AQ_CFG_TCS_MAX)
+		return -EINVAL;
+
+	if (min_rate)
+		set_bit(tc, &cfg->tc_min_rate_msk);
+	else
+		clear_bit(tc, &cfg->tc_min_rate_msk);
+
+	if (min_rate && min_rate < 20) {
+		netdev_warn(self->ndev,
+			"Setting %s to the minimum usable value of %dMbps.\n",
+			"min rate", 20);
+		cfg->tc_min_rate[tc] = 20;
+	} else {
+		cfg->tc_min_rate[tc] = min_rate;
+	}
+
+	return 0;
+}