1 files changed, 975 insertions, 0 deletions

diff --git a/drivers/net/ethernet/intel/ice/ice_ethtool.c b/drivers/net/ethernet/intel/ice/ice_ethtool.c
new file mode 100644
index 000000000..627abef82
--- /dev/null
+++ b/drivers/net/ethernet/intel/ice/ice_ethtool.c
@@ -0,0 +1,975 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (c) 2018, Intel Corporation. */
+
+/* ethtool support for ice */
+
+#include "ice.h"
+
+struct ice_stats {
+	char stat_string[ETH_GSTRING_LEN];
+	int sizeof_stat;
+	int stat_offset;
+};
+
+#define ICE_STAT(_type, _name, _stat) { \
+	.stat_string = _name, \
+	.sizeof_stat = FIELD_SIZEOF(_type, _stat), \
+	.stat_offset = offsetof(_type, _stat) \
+}
+
+#define ICE_VSI_STAT(_name, _stat) \
+		ICE_STAT(struct ice_vsi, _name, _stat)
+#define ICE_PF_STAT(_name, _stat) \
+		ICE_STAT(struct ice_pf, _name, _stat)
+
+static int ice_q_stats_len(struct net_device *netdev)
+{
+	struct ice_netdev_priv *np = netdev_priv(netdev);
+
+	return ((np->vsi->alloc_txq + np->vsi->alloc_rxq) *
+		(sizeof(struct ice_q_stats) / sizeof(u64)));
+}
+
+#define ICE_PF_STATS_LEN	ARRAY_SIZE(ice_gstrings_pf_stats)
+#define ICE_VSI_STATS_LEN	ARRAY_SIZE(ice_gstrings_vsi_stats)
+
+#define ICE_ALL_STATS_LEN(n)	(ICE_PF_STATS_LEN + ICE_VSI_STATS_LEN + \
+				 ice_q_stats_len(n))
+
+static const struct ice_stats ice_gstrings_vsi_stats[] = {
+	ICE_VSI_STAT("tx_unicast", eth_stats.tx_unicast),
+	ICE_VSI_STAT("rx_unicast", eth_stats.rx_unicast),
+	ICE_VSI_STAT("tx_multicast", eth_stats.tx_multicast),
+	ICE_VSI_STAT("rx_multicast", eth_stats.rx_multicast),
+	ICE_VSI_STAT("tx_broadcast", eth_stats.tx_broadcast),
+	ICE_VSI_STAT("rx_broadcast", eth_stats.rx_broadcast),
+	ICE_VSI_STAT("tx_bytes", eth_stats.tx_bytes),
+	ICE_VSI_STAT("rx_bytes", eth_stats.rx_bytes),
+	ICE_VSI_STAT("rx_discards", eth_stats.rx_discards),
+	ICE_VSI_STAT("tx_errors", eth_stats.tx_errors),
+	ICE_VSI_STAT("tx_linearize", tx_linearize),
+	ICE_VSI_STAT("rx_unknown_protocol", eth_stats.rx_unknown_protocol),
+	ICE_VSI_STAT("rx_alloc_fail", rx_buf_failed),
+	ICE_VSI_STAT("rx_pg_alloc_fail", rx_page_failed),
+};
+
+/* These PF_STATs might look like duplicates of some NETDEV_STATs,
+ * but they aren't. This device is capable of supporting multiple
+ * VSIs/netdevs on a single PF. The NETDEV_STATs are for individual
+ * netdevs whereas the PF_STATs are for the physical function that's
+ * hosting these netdevs.
+ *
+ * The PF_STATs are appended to the netdev stats only when ethtool -S
+ * is queried on the base PF netdev.
+ */
+static struct ice_stats ice_gstrings_pf_stats[] = {
+	ICE_PF_STAT("tx_bytes", stats.eth.tx_bytes),
+	ICE_PF_STAT("rx_bytes", stats.eth.rx_bytes),
+	ICE_PF_STAT("tx_unicast", stats.eth.tx_unicast),
+	ICE_PF_STAT("rx_unicast", stats.eth.rx_unicast),
+	ICE_PF_STAT("tx_multicast", stats.eth.tx_multicast),
+	ICE_PF_STAT("rx_multicast", stats.eth.rx_multicast),
+	ICE_PF_STAT("tx_broadcast", stats.eth.tx_broadcast),
+	ICE_PF_STAT("rx_broadcast", stats.eth.rx_broadcast),
+	ICE_PF_STAT("tx_errors", stats.eth.tx_errors),
+	ICE_PF_STAT("tx_size_64", stats.tx_size_64),
+	ICE_PF_STAT("rx_size_64", stats.rx_size_64),
+	ICE_PF_STAT("tx_size_127", stats.tx_size_127),
+	ICE_PF_STAT("rx_size_127", stats.rx_size_127),
+	ICE_PF_STAT("tx_size_255", stats.tx_size_255),
+	ICE_PF_STAT("rx_size_255", stats.rx_size_255),
+	ICE_PF_STAT("tx_size_511", stats.tx_size_511),
+	ICE_PF_STAT("rx_size_511", stats.rx_size_511),
+	ICE_PF_STAT("tx_size_1023", stats.tx_size_1023),
+	ICE_PF_STAT("rx_size_1023", stats.rx_size_1023),
+	ICE_PF_STAT("tx_size_1522", stats.tx_size_1522),
+	ICE_PF_STAT("rx_size_1522", stats.rx_size_1522),
+	ICE_PF_STAT("tx_size_big", stats.tx_size_big),
+	ICE_PF_STAT("rx_size_big", stats.rx_size_big),
+	ICE_PF_STAT("link_xon_tx", stats.link_xon_tx),
+	ICE_PF_STAT("link_xon_rx", stats.link_xon_rx),
+	ICE_PF_STAT("link_xoff_tx", stats.link_xoff_tx),
+	ICE_PF_STAT("link_xoff_rx", stats.link_xoff_rx),
+	ICE_PF_STAT("tx_dropped_link_down", stats.tx_dropped_link_down),
+	ICE_PF_STAT("rx_undersize", stats.rx_undersize),
+	ICE_PF_STAT("rx_fragments", stats.rx_fragments),
+	ICE_PF_STAT("rx_oversize", stats.rx_oversize),
+	ICE_PF_STAT("rx_jabber", stats.rx_jabber),
+	ICE_PF_STAT("rx_csum_bad", hw_csum_rx_error),
+	ICE_PF_STAT("rx_length_errors", stats.rx_len_errors),
+	ICE_PF_STAT("rx_dropped", stats.eth.rx_discards),
+	ICE_PF_STAT("rx_crc_errors", stats.crc_errors),
+	ICE_PF_STAT("illegal_bytes", stats.illegal_bytes),
+	ICE_PF_STAT("mac_local_faults", stats.mac_local_faults),
+	ICE_PF_STAT("mac_remote_faults", stats.mac_remote_faults),
+};
+
+static u32 ice_regs_dump_list[] = {
+	PFGEN_STATE,
+	PRTGEN_STATUS,
+	QRX_CTRL(0),
+	QINT_TQCTL(0),
+	QINT_RQCTL(0),
+	PFINT_OICR_ENA,
+	QRX_ITR(0),
+};
+
+/**
+ * ice_nvm_version_str - format the NVM version strings
+ * @hw: ptr to the hardware info
+ */
+static char *ice_nvm_version_str(struct ice_hw *hw)
+{
+	static char buf[ICE_ETHTOOL_FWVER_LEN];
+	u8 ver, patch;
+	u32 full_ver;
+	u16 build;
+
+	full_ver = hw->nvm.oem_ver;
+	ver = (u8)((full_ver & ICE_OEM_VER_MASK) >> ICE_OEM_VER_SHIFT);
+	build = (u16)((full_ver & ICE_OEM_VER_BUILD_MASK) >>
+		      ICE_OEM_VER_BUILD_SHIFT);
+	patch = (u8)(full_ver & ICE_OEM_VER_PATCH_MASK);
+
+	snprintf(buf, sizeof(buf), "%x.%02x 0x%x %d.%d.%d",
+		 (hw->nvm.ver & ICE_NVM_VER_HI_MASK) >> ICE_NVM_VER_HI_SHIFT,
+		 (hw->nvm.ver & ICE_NVM_VER_LO_MASK) >> ICE_NVM_VER_LO_SHIFT,
+		 hw->nvm.eetrack, ver, build, patch);
+
+	return buf;
+}
+
+static void
+ice_get_drvinfo(struct net_device *netdev, struct ethtool_drvinfo *drvinfo)
+{
+	struct ice_netdev_priv *np = netdev_priv(netdev);
+	struct ice_vsi *vsi = np->vsi;
+	struct ice_pf *pf = vsi->back;
+
+	strlcpy(drvinfo->driver, KBUILD_MODNAME, sizeof(drvinfo->driver));
+	strlcpy(drvinfo->version, ice_drv_ver, sizeof(drvinfo->version));
+	strlcpy(drvinfo->fw_version, ice_nvm_version_str(&pf->hw),
+		sizeof(drvinfo->fw_version));
+	strlcpy(drvinfo->bus_info, pci_name(pf->pdev),
+		sizeof(drvinfo->bus_info));
+}
+
+static int ice_get_regs_len(struct net_device __always_unused *netdev)
+{
+	return sizeof(ice_regs_dump_list);
+}
+
+static void
+ice_get_regs(struct net_device *netdev, struct ethtool_regs *regs, void *p)
+{
+	struct ice_netdev_priv *np = netdev_priv(netdev);
+	struct ice_pf *pf = np->vsi->back;
+	struct ice_hw *hw = &pf->hw;
+	u32 *regs_buf = (u32 *)p;
+	int i;
+
+	regs->version = 1;
+
+	for (i = 0; i < ARRAY_SIZE(ice_regs_dump_list); ++i)
+		regs_buf[i] = rd32(hw, ice_regs_dump_list[i]);
+}
+
+static u32 ice_get_msglevel(struct net_device *netdev)
+{
+	struct ice_netdev_priv *np = netdev_priv(netdev);
+	struct ice_pf *pf = np->vsi->back;
+
+#ifndef CONFIG_DYNAMIC_DEBUG
+	if (pf->hw.debug_mask)
+		netdev_info(netdev, "hw debug_mask: 0x%llX\n",
+			    pf->hw.debug_mask);
+#endif /* !CONFIG_DYNAMIC_DEBUG */
+
+	return pf->msg_enable;
+}
+
+static void ice_set_msglevel(struct net_device *netdev, u32 data)
+{
+	struct ice_netdev_priv *np = netdev_priv(netdev);
+	struct ice_pf *pf = np->vsi->back;
+
+#ifndef CONFIG_DYNAMIC_DEBUG
+	if (ICE_DBG_USER & data)
+		pf->hw.debug_mask = data;
+	else
+		pf->msg_enable = data;
+#else
+	pf->msg_enable = data;
+#endif /* !CONFIG_DYNAMIC_DEBUG */
+}
+
+static void ice_get_strings(struct net_device *netdev, u32 stringset, u8 *data)
+{
+	struct ice_netdev_priv *np = netdev_priv(netdev);
+	struct ice_vsi *vsi = np->vsi;
+	char *p = (char *)data;
+	unsigned int i;
+
+	switch (stringset) {
+	case ETH_SS_STATS:
+		for (i = 0; i < ICE_VSI_STATS_LEN; i++) {
+			snprintf(p, ETH_GSTRING_LEN, "%s",
+				 ice_gstrings_vsi_stats[i].stat_string);
+			p += ETH_GSTRING_LEN;
+		}
+
+		ice_for_each_alloc_txq(vsi, i) {
+			snprintf(p, ETH_GSTRING_LEN,
+				 "tx-queue-%u.tx_packets", i);
+			p += ETH_GSTRING_LEN;
+			snprintf(p, ETH_GSTRING_LEN, "tx-queue-%u.tx_bytes", i);
+			p += ETH_GSTRING_LEN;
+		}
+
+		ice_for_each_alloc_rxq(vsi, i) {
+			snprintf(p, ETH_GSTRING_LEN,
+				 "rx-queue-%u.rx_packets", i);
+			p += ETH_GSTRING_LEN;
+			snprintf(p, ETH_GSTRING_LEN, "rx-queue-%u.rx_bytes", i);
+			p += ETH_GSTRING_LEN;
+		}
+
+		if (vsi->type != ICE_VSI_PF)
+			return;
+
+		for (i = 0; i < ICE_PF_STATS_LEN; i++) {
+			snprintf(p, ETH_GSTRING_LEN, "port.%s",
+				 ice_gstrings_pf_stats[i].stat_string);
+			p += ETH_GSTRING_LEN;
+		}
+
+		break;
+	default:
+		break;
+	}
+}
+
+static int ice_get_sset_count(struct net_device *netdev, int sset)
+{
+	switch (sset) {
+	case ETH_SS_STATS:
+		/* The number (and order) of strings reported *must* remain
+		 * constant for a given netdevice. This function must not
+		 * report a different number based on run time parameters
+		 * (such as the number of queues in use, or the setting of
+		 * a private ethtool flag). This is due to the nature of the
+		 * ethtool stats API.
+		 *
+		 * User space programs such as ethtool must make 3 separate
+		 * ioctl requests, one for size, one for the strings, and
+		 * finally one for the stats. Since these cross into
+		 * user space, changes to the number or size could result in
+		 * undefined memory access or incorrect string<->value
+		 * correlations for statistics.
+		 *
+		 * Even if it appears to be safe, changes to the size or
+		 * order of strings will suffer from race conditions and are
+		 * not safe.
+		 */
+		return ICE_ALL_STATS_LEN(netdev);
+	default:
+		return -EOPNOTSUPP;
+	}
+}
+
+static void
+ice_get_ethtool_stats(struct net_device *netdev,
+		      struct ethtool_stats __always_unused *stats, u64 *data)
+{
+	struct ice_netdev_priv *np = netdev_priv(netdev);
+	struct ice_vsi *vsi = np->vsi;
+	struct ice_pf *pf = vsi->back;
+	struct ice_ring *ring;
+	unsigned int j = 0;
+	int i = 0;
+	char *p;
+
+	for (j = 0; j < ICE_VSI_STATS_LEN; j++) {
+		p = (char *)vsi + ice_gstrings_vsi_stats[j].stat_offset;
+		data[i++] = (ice_gstrings_vsi_stats[j].sizeof_stat ==
+			    sizeof(u64)) ? *(u64 *)p : *(u32 *)p;
+	}
+
+	/* populate per queue stats */
+	rcu_read_lock();
+
+	ice_for_each_alloc_txq(vsi, j) {
+		ring = READ_ONCE(vsi->tx_rings[j]);
+		if (ring) {
+			data[i++] = ring->stats.pkts;
+			data[i++] = ring->stats.bytes;
+		} else {
+			data[i++] = 0;
+			data[i++] = 0;
+		}
+	}
+
+	ice_for_each_alloc_rxq(vsi, j) {
+		ring = READ_ONCE(vsi->rx_rings[j]);
+		if (ring) {
+			data[i++] = ring->stats.pkts;
+			data[i++] = ring->stats.bytes;
+		} else {
+			data[i++] = 0;
+			data[i++] = 0;
+		}
+	}
+
+	rcu_read_unlock();
+
+	if (vsi->type != ICE_VSI_PF)
+		return;
+
+	for (j = 0; j < ICE_PF_STATS_LEN; j++) {
+		p = (char *)pf + ice_gstrings_pf_stats[j].stat_offset;
+		data[i++] = (ice_gstrings_pf_stats[j].sizeof_stat ==
+			     sizeof(u64)) ? *(u64 *)p : *(u32 *)p;
+	}
+}
+
+static int
+ice_get_link_ksettings(struct net_device *netdev,
+		       struct ethtool_link_ksettings *ks)
+{
+	struct ice_netdev_priv *np = netdev_priv(netdev);
+	struct ice_link_status *hw_link_info;
+	struct ice_vsi *vsi = np->vsi;
+	bool link_up;
+
+	hw_link_info = &vsi->port_info->phy.link_info;
+	link_up = hw_link_info->link_info & ICE_AQ_LINK_UP;
+
+	ethtool_link_ksettings_add_link_mode(ks, supported,
+					     10000baseT_Full);
+	ethtool_link_ksettings_add_link_mode(ks, advertising,
+					     10000baseT_Full);
+
+	/* set speed and duplex */
+	if (link_up) {
+		switch (hw_link_info->link_speed) {
+		case ICE_AQ_LINK_SPEED_100MB:
+			ks->base.speed = SPEED_100;
+			break;
+		case ICE_AQ_LINK_SPEED_2500MB:
+			ks->base.speed = SPEED_2500;
+			break;
+		case ICE_AQ_LINK_SPEED_5GB:
+			ks->base.speed = SPEED_5000;
+			break;
+		case ICE_AQ_LINK_SPEED_10GB:
+			ks->base.speed = SPEED_10000;
+			break;
+		case ICE_AQ_LINK_SPEED_25GB:
+			ks->base.speed = SPEED_25000;
+			break;
+		case ICE_AQ_LINK_SPEED_40GB:
+			ks->base.speed = SPEED_40000;
+			break;
+		default:
+			ks->base.speed = SPEED_UNKNOWN;
+			break;
+		}
+
+		ks->base.duplex = DUPLEX_FULL;
+	} else {
+		ks->base.speed = SPEED_UNKNOWN;
+		ks->base.duplex = DUPLEX_UNKNOWN;
+	}
+
+	/* set autoneg settings */
+	ks->base.autoneg = ((hw_link_info->an_info & ICE_AQ_AN_COMPLETED) ?
+			    AUTONEG_ENABLE : AUTONEG_DISABLE);
+
+	/* set media type settings */
+	switch (vsi->port_info->phy.media_type) {
+	case ICE_MEDIA_FIBER:
+		ethtool_link_ksettings_add_link_mode(ks, supported, FIBRE);
+		ks->base.port = PORT_FIBRE;
+		break;
+	case ICE_MEDIA_BASET:
+		ethtool_link_ksettings_add_link_mode(ks, supported, TP);
+		ethtool_link_ksettings_add_link_mode(ks, advertising, TP);
+		ks->base.port = PORT_TP;
+		break;
+	case ICE_MEDIA_BACKPLANE:
+		ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg);
+		ethtool_link_ksettings_add_link_mode(ks, supported, Backplane);
+		ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg);
+		ethtool_link_ksettings_add_link_mode(ks, advertising,
+						     Backplane);
+		ks->base.port = PORT_NONE;
+		break;
+	case ICE_MEDIA_DA:
+		ethtool_link_ksettings_add_link_mode(ks, supported, FIBRE);
+		ethtool_link_ksettings_add_link_mode(ks, advertising, FIBRE);
+		ks->base.port = PORT_DA;
+		break;
+	default:
+		ks->base.port = PORT_OTHER;
+		break;
+	}
+
+	/* flow control is symmetric and always supported */
+	ethtool_link_ksettings_add_link_mode(ks, supported, Pause);
+
+	switch (vsi->port_info->fc.req_mode) {
+	case ICE_FC_FULL:
+		ethtool_link_ksettings_add_link_mode(ks, advertising, Pause);
+		break;
+	case ICE_FC_TX_PAUSE:
+		ethtool_link_ksettings_add_link_mode(ks, advertising,
+						     Asym_Pause);
+		break;
+	case ICE_FC_RX_PAUSE:
+		ethtool_link_ksettings_add_link_mode(ks, advertising, Pause);
+		ethtool_link_ksettings_add_link_mode(ks, advertising,
+						     Asym_Pause);
+		break;
+	case ICE_FC_PFC:
+	default:
+		ethtool_link_ksettings_del_link_mode(ks, advertising, Pause);
+		ethtool_link_ksettings_del_link_mode(ks, advertising,
+						     Asym_Pause);
+		break;
+	}
+
+	return 0;
+}
+
+/**
+ * ice_get_rxnfc - command to get RX flow classification rules
+ * @netdev: network interface device structure
+ * @cmd: ethtool rxnfc command
+ * @rule_locs: buffer to rturn Rx flow classification rules
+ *
+ * Returns Success if the command is supported.
+ */
+static int ice_get_rxnfc(struct net_device *netdev, struct ethtool_rxnfc *cmd,
+			 u32 __always_unused *rule_locs)
+{
+	struct ice_netdev_priv *np = netdev_priv(netdev);
+	struct ice_vsi *vsi = np->vsi;
+	int ret = -EOPNOTSUPP;
+
+	switch (cmd->cmd) {
+	case ETHTOOL_GRXRINGS:
+		cmd->data = vsi->rss_size;
+		ret = 0;
+		break;
+	default:
+		break;
+	}
+
+	return ret;
+}
+
+static void
+ice_get_ringparam(struct net_device *netdev, struct ethtool_ringparam *ring)
+{
+	struct ice_netdev_priv *np = netdev_priv(netdev);
+	struct ice_vsi *vsi = np->vsi;
+
+	ring->rx_max_pending = ICE_MAX_NUM_DESC;
+	ring->tx_max_pending = ICE_MAX_NUM_DESC;
+	ring->rx_pending = vsi->rx_rings[0]->count;
+	ring->tx_pending = vsi->tx_rings[0]->count;
+
+	/* Rx mini and jumbo rings are not supported */
+	ring->rx_mini_max_pending = 0;
+	ring->rx_jumbo_max_pending = 0;
+	ring->rx_mini_pending = 0;
+	ring->rx_jumbo_pending = 0;
+}
+
+static int
+ice_set_ringparam(struct net_device *netdev, struct ethtool_ringparam *ring)
+{
+	struct ice_ring *tx_rings = NULL, *rx_rings = NULL;
+	struct ice_netdev_priv *np = netdev_priv(netdev);
+	struct ice_vsi *vsi = np->vsi;
+	struct ice_pf *pf = vsi->back;
+	int i, timeout = 50, err = 0;
+	u32 new_rx_cnt, new_tx_cnt;
+
+	if (ring->tx_pending > ICE_MAX_NUM_DESC ||
+	    ring->tx_pending < ICE_MIN_NUM_DESC ||
+	    ring->rx_pending > ICE_MAX_NUM_DESC ||
+	    ring->rx_pending < ICE_MIN_NUM_DESC) {
+		netdev_err(netdev, "Descriptors requested (Tx: %d / Rx: %d) out of range [%d-%d] (increment %d)\n",
+			   ring->tx_pending, ring->rx_pending,
+			   ICE_MIN_NUM_DESC, ICE_MAX_NUM_DESC,
+			   ICE_REQ_DESC_MULTIPLE);
+		return -EINVAL;
+	}
+
+	new_tx_cnt = ALIGN(ring->tx_pending, ICE_REQ_DESC_MULTIPLE);
+	if (new_tx_cnt != ring->tx_pending)
+		netdev_info(netdev,
+			    "Requested Tx descriptor count rounded up to %d\n",
+			    new_tx_cnt);
+	new_rx_cnt = ALIGN(ring->rx_pending, ICE_REQ_DESC_MULTIPLE);
+	if (new_rx_cnt != ring->rx_pending)
+		netdev_info(netdev,
+			    "Requested Rx descriptor count rounded up to %d\n",
+			    new_rx_cnt);
+
+	/* if nothing to do return success */
+	if (new_tx_cnt == vsi->tx_rings[0]->count &&
+	    new_rx_cnt == vsi->rx_rings[0]->count) {
+		netdev_dbg(netdev, "Nothing to change, descriptor count is same as requested\n");
+		return 0;
+	}
+
+	while (test_and_set_bit(__ICE_CFG_BUSY, pf->state)) {
+		timeout--;
+		if (!timeout)
+			return -EBUSY;
+		usleep_range(1000, 2000);
+	}
+
+	/* set for the next time the netdev is started */
+	if (!netif_running(vsi->netdev)) {
+		for (i = 0; i < vsi->alloc_txq; i++)
+			vsi->tx_rings[i]->count = new_tx_cnt;
+		for (i = 0; i < vsi->alloc_rxq; i++)
+			vsi->rx_rings[i]->count = new_rx_cnt;
+		netdev_dbg(netdev, "Link is down, descriptor count change happens when link is brought up\n");
+		goto done;
+	}
+
+	if (new_tx_cnt == vsi->tx_rings[0]->count)
+		goto process_rx;
+
+	/* alloc updated Tx resources */
+	netdev_info(netdev, "Changing Tx descriptor count from %d to %d\n",
+		    vsi->tx_rings[0]->count, new_tx_cnt);
+
+	tx_rings = devm_kcalloc(&pf->pdev->dev, vsi->alloc_txq,
+				sizeof(struct ice_ring), GFP_KERNEL);
+	if (!tx_rings) {
+		err = -ENOMEM;
+		goto done;
+	}
+
+	for (i = 0; i < vsi->alloc_txq; i++) {
+		/* clone ring and setup updated count */
+		tx_rings[i] = *vsi->tx_rings[i];
+		tx_rings[i].count = new_tx_cnt;
+		tx_rings[i].desc = NULL;
+		tx_rings[i].tx_buf = NULL;
+		err = ice_setup_tx_ring(&tx_rings[i]);
+		if (err) {
+			while (i) {
+				i--;
+				ice_clean_tx_ring(&tx_rings[i]);
+			}
+			devm_kfree(&pf->pdev->dev, tx_rings);
+			goto done;
+		}
+	}
+
+process_rx:
+	if (new_rx_cnt == vsi->rx_rings[0]->count)
+		goto process_link;
+
+	/* alloc updated Rx resources */
+	netdev_info(netdev, "Changing Rx descriptor count from %d to %d\n",
+		    vsi->rx_rings[0]->count, new_rx_cnt);
+
+	rx_rings = devm_kcalloc(&pf->pdev->dev, vsi->alloc_rxq,
+				sizeof(struct ice_ring), GFP_KERNEL);
+	if (!rx_rings) {
+		err = -ENOMEM;
+		goto done;
+	}
+
+	for (i = 0; i < vsi->alloc_rxq; i++) {
+		/* clone ring and setup updated count */
+		rx_rings[i] = *vsi->rx_rings[i];
+		rx_rings[i].count = new_rx_cnt;
+		rx_rings[i].desc = NULL;
+		rx_rings[i].rx_buf = NULL;
+		/* this is to allow wr32 to have something to write to
+		 * during early allocation of Rx buffers
+		 */
+		rx_rings[i].tail = vsi->back->hw.hw_addr + PRTGEN_STATUS;
+
+		err = ice_setup_rx_ring(&rx_rings[i]);
+		if (err)
+			goto rx_unwind;
+
+		/* allocate Rx buffers */
+		err = ice_alloc_rx_bufs(&rx_rings[i],
+					ICE_DESC_UNUSED(&rx_rings[i]));
+rx_unwind:
+		if (err) {
+			while (i) {
+				i--;
+				ice_free_rx_ring(&rx_rings[i]);
+			}
+			devm_kfree(&pf->pdev->dev, rx_rings);
+			err = -ENOMEM;
+			goto free_tx;
+		}
+	}
+
+process_link:
+	/* Bring interface down, copy in the new ring info, then restore the
+	 * interface. if VSI is up, bring it down and then back up
+	 */
+	if (!test_and_set_bit(__ICE_DOWN, vsi->state)) {
+		ice_down(vsi);
+
+		if (tx_rings) {
+			for (i = 0; i < vsi->alloc_txq; i++) {
+				ice_free_tx_ring(vsi->tx_rings[i]);
+				*vsi->tx_rings[i] = tx_rings[i];
+			}
+			devm_kfree(&pf->pdev->dev, tx_rings);
+		}
+
+		if (rx_rings) {
+			for (i = 0; i < vsi->alloc_rxq; i++) {
+				ice_free_rx_ring(vsi->rx_rings[i]);
+				/* copy the real tail offset */
+				rx_rings[i].tail = vsi->rx_rings[i]->tail;
+				/* this is to fake out the allocation routine
+				 * into thinking it has to realloc everything
+				 * but the recycling logic will let us re-use
+				 * the buffers allocated above
+				 */
+				rx_rings[i].next_to_use = 0;
+				rx_rings[i].next_to_clean = 0;
+				rx_rings[i].next_to_alloc = 0;
+				*vsi->rx_rings[i] = rx_rings[i];
+			}
+			devm_kfree(&pf->pdev->dev, rx_rings);
+		}
+
+		ice_up(vsi);
+	}
+	goto done;
+
+free_tx:
+	/* error cleanup if the Rx allocations failed after getting Tx */
+	if (tx_rings) {
+		for (i = 0; i < vsi->alloc_txq; i++)
+			ice_free_tx_ring(&tx_rings[i]);
+		devm_kfree(&pf->pdev->dev, tx_rings);
+	}
+
+done:
+	clear_bit(__ICE_CFG_BUSY, pf->state);
+	return err;
+}
+
+static int ice_nway_reset(struct net_device *netdev)
+{
+	/* restart autonegotiation */
+	struct ice_netdev_priv *np = netdev_priv(netdev);
+	struct ice_link_status *hw_link_info;
+	struct ice_vsi *vsi = np->vsi;
+	struct ice_port_info *pi;
+	enum ice_status status;
+	bool link_up;
+
+	pi = vsi->port_info;
+	hw_link_info = &pi->phy.link_info;
+	link_up = hw_link_info->link_info & ICE_AQ_LINK_UP;
+
+	status = ice_aq_set_link_restart_an(pi, link_up, NULL);
+	if (status) {
+		netdev_info(netdev, "link restart failed, err %d aq_err %d\n",
+			    status, pi->hw->adminq.sq_last_status);
+		return -EIO;
+	}
+
+	return 0;
+}
+
+/**
+ * ice_get_pauseparam - Get Flow Control status
+ * @netdev: network interface device structure
+ * @pause: ethernet pause (flow control) parameters
+ */
+static void
+ice_get_pauseparam(struct net_device *netdev, struct ethtool_pauseparam *pause)
+{
+	struct ice_netdev_priv *np = netdev_priv(netdev);
+	struct ice_port_info *pi;
+
+	pi = np->vsi->port_info;
+	pause->autoneg =
+		((pi->phy.link_info.an_info & ICE_AQ_AN_COMPLETED) ?
+		 AUTONEG_ENABLE : AUTONEG_DISABLE);
+
+	if (pi->fc.current_mode == ICE_FC_RX_PAUSE) {
+		pause->rx_pause = 1;
+	} else if (pi->fc.current_mode == ICE_FC_TX_PAUSE) {
+		pause->tx_pause = 1;
+	} else if (pi->fc.current_mode == ICE_FC_FULL) {
+		pause->rx_pause = 1;
+		pause->tx_pause = 1;
+	}
+}
+
+/**
+ * ice_set_pauseparam - Set Flow Control parameter
+ * @netdev: network interface device structure
+ * @pause: return tx/rx flow control status
+ */
+static int
+ice_set_pauseparam(struct net_device *netdev, struct ethtool_pauseparam *pause)
+{
+	struct ice_netdev_priv *np = netdev_priv(netdev);
+	struct ice_link_status *hw_link_info;
+	struct ice_pf *pf = np->vsi->back;
+	struct ice_vsi *vsi = np->vsi;
+	struct ice_hw *hw = &pf->hw;
+	struct ice_port_info *pi;
+	enum ice_status status;
+	u8 aq_failures;
+	bool link_up;
+	int err = 0;
+
+	pi = vsi->port_info;
+	hw_link_info = &pi->phy.link_info;
+	link_up = hw_link_info->link_info & ICE_AQ_LINK_UP;
+
+	/* Changing the port's flow control is not supported if this isn't the
+	 * PF VSI
+	 */
+	if (vsi->type != ICE_VSI_PF) {
+		netdev_info(netdev, "Changing flow control parameters only supported for PF VSI\n");
+		return -EOPNOTSUPP;
+	}
+
+	if (pause->autoneg != (hw_link_info->an_info & ICE_AQ_AN_COMPLETED)) {
+		netdev_info(netdev, "To change autoneg please use: ethtool -s <dev> autoneg <on|off>\n");
+		return -EOPNOTSUPP;
+	}
+
+	/* If we have link and don't have autoneg */
+	if (!test_bit(__ICE_DOWN, pf->state) &&
+	    !(hw_link_info->an_info & ICE_AQ_AN_COMPLETED)) {
+		/* Send message that it might not necessarily work*/
+		netdev_info(netdev, "Autoneg did not complete so changing settings may not result in an actual change.\n");
+	}
+
+	if (pause->rx_pause && pause->tx_pause)
+		pi->fc.req_mode = ICE_FC_FULL;
+	else if (pause->rx_pause && !pause->tx_pause)
+		pi->fc.req_mode = ICE_FC_RX_PAUSE;
+	else if (!pause->rx_pause && pause->tx_pause)
+		pi->fc.req_mode = ICE_FC_TX_PAUSE;
+	else if (!pause->rx_pause && !pause->tx_pause)
+		pi->fc.req_mode = ICE_FC_NONE;
+	else
+		return -EINVAL;
+
+	/* Set the FC mode and only restart AN if link is up */
+	status = ice_set_fc(pi, &aq_failures, link_up);
+
+	if (aq_failures & ICE_SET_FC_AQ_FAIL_GET) {
+		netdev_info(netdev, "Set fc failed on the get_phy_capabilities call with err %d aq_err %d\n",
+			    status, hw->adminq.sq_last_status);
+		err = -EAGAIN;
+	} else if (aq_failures & ICE_SET_FC_AQ_FAIL_SET) {
+		netdev_info(netdev, "Set fc failed on the set_phy_config call with err %d aq_err %d\n",
+			    status, hw->adminq.sq_last_status);
+		err = -EAGAIN;
+	} else if (aq_failures & ICE_SET_FC_AQ_FAIL_UPDATE) {
+		netdev_info(netdev, "Set fc failed on the get_link_info call with err %d aq_err %d\n",
+			    status, hw->adminq.sq_last_status);
+		err = -EAGAIN;
+	}
+
+	if (!test_bit(__ICE_DOWN, pf->state)) {
+		/* Give it a little more time to try to come back. If still
+		 * down, restart autoneg link or reinitialize the interface.
+		 */
+		msleep(75);
+		if (!test_bit(__ICE_DOWN, pf->state))
+			return ice_nway_reset(netdev);
+
+		ice_down(vsi);
+		ice_up(vsi);
+	}
+
+	return err;
+}
+
+/**
+ * ice_get_rxfh_key_size - get the RSS hash key size
+ * @netdev: network interface device structure
+ *
+ * Returns the table size.
+ */
+static u32 ice_get_rxfh_key_size(struct net_device __always_unused *netdev)
+{
+	return ICE_VSIQF_HKEY_ARRAY_SIZE;
+}
+
+/**
+ * ice_get_rxfh_indir_size - get the rx flow hash indirection table size
+ * @netdev: network interface device structure
+ *
+ * Returns the table size.
+ */
+static u32 ice_get_rxfh_indir_size(struct net_device *netdev)
+{
+	struct ice_netdev_priv *np = netdev_priv(netdev);
+
+	return np->vsi->rss_table_size;
+}
+
+/**
+ * ice_get_rxfh - get the rx flow hash indirection table
+ * @netdev: network interface device structure
+ * @indir: indirection table
+ * @key: hash key
+ * @hfunc: hash function
+ *
+ * Reads the indirection table directly from the hardware.
+ */
+static int
+ice_get_rxfh(struct net_device *netdev, u32 *indir, u8 *key, u8 *hfunc)
+{
+	struct ice_netdev_priv *np = netdev_priv(netdev);
+	struct ice_vsi *vsi = np->vsi;
+	struct ice_pf *pf = vsi->back;
+	int ret = 0, i;
+	u8 *lut;
+
+	if (hfunc)
+		*hfunc = ETH_RSS_HASH_TOP;
+
+	if (!indir)
+		return 0;
+
+	if (!test_bit(ICE_FLAG_RSS_ENA, pf->flags)) {
+		/* RSS not supported return error here */
+		netdev_warn(netdev, "RSS is not configured on this VSI!\n");
+		return -EIO;
+	}
+
+	lut = devm_kzalloc(&pf->pdev->dev, vsi->rss_table_size, GFP_KERNEL);
+	if (!lut)
+		return -ENOMEM;
+
+	if (ice_get_rss(vsi, key, lut, vsi->rss_table_size)) {
+		ret = -EIO;
+		goto out;
+	}
+
+	for (i = 0; i < vsi->rss_table_size; i++)
+		indir[i] = (u32)(lut[i]);
+
+out:
+	devm_kfree(&pf->pdev->dev, lut);
+	return ret;
+}
+
+/**
+ * ice_set_rxfh - set the rx flow hash indirection table
+ * @netdev: network interface device structure
+ * @indir: indirection table
+ * @key: hash key
+ * @hfunc: hash function
+ *
+ * Returns -EINVAL if the table specifies an invalid queue id, otherwise
+ * returns 0 after programming the table.
+ */
+static int ice_set_rxfh(struct net_device *netdev, const u32 *indir,
+			const u8 *key, const u8 hfunc)
+{
+	struct ice_netdev_priv *np = netdev_priv(netdev);
+	struct ice_vsi *vsi = np->vsi;
+	struct ice_pf *pf = vsi->back;
+	u8 *seed = NULL;
+
+	if (hfunc != ETH_RSS_HASH_NO_CHANGE && hfunc != ETH_RSS_HASH_TOP)
+		return -EOPNOTSUPP;
+
+	if (!test_bit(ICE_FLAG_RSS_ENA, pf->flags)) {
+		/* RSS not supported return error here */
+		netdev_warn(netdev, "RSS is not configured on this VSI!\n");
+		return -EIO;
+	}
+
+	if (key) {
+		if (!vsi->rss_hkey_user) {
+			vsi->rss_hkey_user =
+				devm_kzalloc(&pf->pdev->dev,
+					     ICE_VSIQF_HKEY_ARRAY_SIZE,
+					     GFP_KERNEL);
+			if (!vsi->rss_hkey_user)
+				return -ENOMEM;
+		}
+		memcpy(vsi->rss_hkey_user, key, ICE_VSIQF_HKEY_ARRAY_SIZE);
+		seed = vsi->rss_hkey_user;
+	}
+
+	if (!vsi->rss_lut_user) {
+		vsi->rss_lut_user = devm_kzalloc(&pf->pdev->dev,
+						 vsi->rss_table_size,
+						 GFP_KERNEL);
+		if (!vsi->rss_lut_user)
+			return -ENOMEM;
+	}
+
+	/* Each 32 bits pointed by 'indir' is stored with a lut entry */
+	if (indir) {
+		int i;
+
+		for (i = 0; i < vsi->rss_table_size; i++)
+			vsi->rss_lut_user[i] = (u8)(indir[i]);
+	} else {
+		ice_fill_rss_lut(vsi->rss_lut_user, vsi->rss_table_size,
+				 vsi->rss_size);
+	}
+
+	if (ice_set_rss(vsi, seed, vsi->rss_lut_user, vsi->rss_table_size))
+		return -EIO;
+
+	return 0;
+}
+
+static const struct ethtool_ops ice_ethtool_ops = {
+	.get_link_ksettings	= ice_get_link_ksettings,
+	.get_drvinfo            = ice_get_drvinfo,
+	.get_regs_len           = ice_get_regs_len,
+	.get_regs               = ice_get_regs,
+	.get_msglevel           = ice_get_msglevel,
+	.set_msglevel           = ice_set_msglevel,
+	.get_link		= ethtool_op_get_link,
+	.get_strings		= ice_get_strings,
+	.get_ethtool_stats      = ice_get_ethtool_stats,
+	.get_sset_count		= ice_get_sset_count,
+	.get_rxnfc		= ice_get_rxnfc,
+	.get_ringparam		= ice_get_ringparam,
+	.set_ringparam		= ice_set_ringparam,
+	.nway_reset		= ice_nway_reset,
+	.get_pauseparam		= ice_get_pauseparam,
+	.set_pauseparam		= ice_set_pauseparam,
+	.get_rxfh_key_size	= ice_get_rxfh_key_size,
+	.get_rxfh_indir_size	= ice_get_rxfh_indir_size,
+	.get_rxfh		= ice_get_rxfh,
+	.set_rxfh		= ice_set_rxfh,
+};
+
+/**
+ * ice_set_ethtool_ops - setup netdev ethtool ops
+ * @netdev: network interface device structure
+ *
+ * setup netdev ethtool ops with ice specific ops
+ */
+void ice_set_ethtool_ops(struct net_device *netdev)
+{
+	netdev->ethtool_ops = &ice_ethtool_ops;
+}