1 files changed, 627 insertions, 0 deletions

diff --git a/drivers/net/ethernet/google/gve/gve_ethtool.c b/drivers/net/ethernet/google/gve/gve_ethtool.c
new file mode 100644
index 000000000..033f17cb9
--- /dev/null
+++ b/drivers/net/ethernet/google/gve/gve_ethtool.c
@@ -0,0 +1,627 @@
+// SPDX-License-Identifier: (GPL-2.0 OR MIT)
+/* Google virtual Ethernet (gve) driver
+ *
+ * Copyright (C) 2015-2021 Google, Inc.
+ */
+
+#include <linux/ethtool.h>
+#include <linux/rtnetlink.h>
+#include "gve.h"
+#include "gve_adminq.h"
+#include "gve_dqo.h"
+
+static void gve_get_drvinfo(struct net_device *netdev,
+			    struct ethtool_drvinfo *info)
+{
+	struct gve_priv *priv = netdev_priv(netdev);
+
+	strscpy(info->driver, "gve", sizeof(info->driver));
+	strscpy(info->version, gve_version_str, sizeof(info->version));
+	strscpy(info->bus_info, pci_name(priv->pdev), sizeof(info->bus_info));
+}
+
+static void gve_set_msglevel(struct net_device *netdev, u32 value)
+{
+	struct gve_priv *priv = netdev_priv(netdev);
+
+	priv->msg_enable = value;
+}
+
+static u32 gve_get_msglevel(struct net_device *netdev)
+{
+	struct gve_priv *priv = netdev_priv(netdev);
+
+	return priv->msg_enable;
+}
+
+static const char gve_gstrings_main_stats[][ETH_GSTRING_LEN] = {
+	"rx_packets", "tx_packets", "rx_bytes", "tx_bytes",
+	"rx_dropped", "tx_dropped", "tx_timeouts",
+	"rx_skb_alloc_fail", "rx_buf_alloc_fail", "rx_desc_err_dropped_pkt",
+	"interface_up_cnt", "interface_down_cnt", "reset_cnt",
+	"page_alloc_fail", "dma_mapping_error", "stats_report_trigger_cnt",
+};
+
+static const char gve_gstrings_rx_stats[][ETH_GSTRING_LEN] = {
+	"rx_posted_desc[%u]", "rx_completed_desc[%u]", "rx_consumed_desc[%u]", "rx_bytes[%u]",
+	"rx_cont_packet_cnt[%u]", "rx_frag_flip_cnt[%u]", "rx_frag_copy_cnt[%u]",
+	"rx_dropped_pkt[%u]", "rx_copybreak_pkt[%u]", "rx_copied_pkt[%u]",
+	"rx_queue_drop_cnt[%u]", "rx_no_buffers_posted[%u]",
+	"rx_drops_packet_over_mru[%u]", "rx_drops_invalid_checksum[%u]",
+};
+
+static const char gve_gstrings_tx_stats[][ETH_GSTRING_LEN] = {
+	"tx_posted_desc[%u]", "tx_completed_desc[%u]", "tx_consumed_desc[%u]", "tx_bytes[%u]",
+	"tx_wake[%u]", "tx_stop[%u]", "tx_event_counter[%u]",
+	"tx_dma_mapping_error[%u]",
+};
+
+static const char gve_gstrings_adminq_stats[][ETH_GSTRING_LEN] = {
+	"adminq_prod_cnt", "adminq_cmd_fail", "adminq_timeouts",
+	"adminq_describe_device_cnt", "adminq_cfg_device_resources_cnt",
+	"adminq_register_page_list_cnt", "adminq_unregister_page_list_cnt",
+	"adminq_create_tx_queue_cnt", "adminq_create_rx_queue_cnt",
+	"adminq_destroy_tx_queue_cnt", "adminq_destroy_rx_queue_cnt",
+	"adminq_dcfg_device_resources_cnt", "adminq_set_driver_parameter_cnt",
+	"adminq_report_stats_cnt", "adminq_report_link_speed_cnt"
+};
+
+static const char gve_gstrings_priv_flags[][ETH_GSTRING_LEN] = {
+	"report-stats",
+};
+
+#define GVE_MAIN_STATS_LEN  ARRAY_SIZE(gve_gstrings_main_stats)
+#define GVE_ADMINQ_STATS_LEN  ARRAY_SIZE(gve_gstrings_adminq_stats)
+#define NUM_GVE_TX_CNTS	ARRAY_SIZE(gve_gstrings_tx_stats)
+#define NUM_GVE_RX_CNTS	ARRAY_SIZE(gve_gstrings_rx_stats)
+#define GVE_PRIV_FLAGS_STR_LEN ARRAY_SIZE(gve_gstrings_priv_flags)
+
+static void gve_get_strings(struct net_device *netdev, u32 stringset, u8 *data)
+{
+	struct gve_priv *priv = netdev_priv(netdev);
+	char *s = (char *)data;
+	int i, j;
+
+	switch (stringset) {
+	case ETH_SS_STATS:
+		memcpy(s, *gve_gstrings_main_stats,
+		       sizeof(gve_gstrings_main_stats));
+		s += sizeof(gve_gstrings_main_stats);
+
+		for (i = 0; i < priv->rx_cfg.num_queues; i++) {
+			for (j = 0; j < NUM_GVE_RX_CNTS; j++) {
+				snprintf(s, ETH_GSTRING_LEN,
+					 gve_gstrings_rx_stats[j], i);
+				s += ETH_GSTRING_LEN;
+			}
+		}
+
+		for (i = 0; i < priv->tx_cfg.num_queues; i++) {
+			for (j = 0; j < NUM_GVE_TX_CNTS; j++) {
+				snprintf(s, ETH_GSTRING_LEN,
+					 gve_gstrings_tx_stats[j], i);
+				s += ETH_GSTRING_LEN;
+			}
+		}
+
+		memcpy(s, *gve_gstrings_adminq_stats,
+		       sizeof(gve_gstrings_adminq_stats));
+		s += sizeof(gve_gstrings_adminq_stats);
+		break;
+
+	case ETH_SS_PRIV_FLAGS:
+		memcpy(s, *gve_gstrings_priv_flags,
+		       sizeof(gve_gstrings_priv_flags));
+		s += sizeof(gve_gstrings_priv_flags);
+		break;
+
+	default:
+		break;
+	}
+}
+
+static int gve_get_sset_count(struct net_device *netdev, int sset)
+{
+	struct gve_priv *priv = netdev_priv(netdev);
+
+	switch (sset) {
+	case ETH_SS_STATS:
+		return GVE_MAIN_STATS_LEN + GVE_ADMINQ_STATS_LEN +
+		       (priv->rx_cfg.num_queues * NUM_GVE_RX_CNTS) +
+		       (priv->tx_cfg.num_queues * NUM_GVE_TX_CNTS);
+	case ETH_SS_PRIV_FLAGS:
+		return GVE_PRIV_FLAGS_STR_LEN;
+	default:
+		return -EOPNOTSUPP;
+	}
+}
+
+static void
+gve_get_ethtool_stats(struct net_device *netdev,
+		      struct ethtool_stats *stats, u64 *data)
+{
+	u64 tmp_rx_pkts, tmp_rx_bytes, tmp_rx_skb_alloc_fail,
+		tmp_rx_buf_alloc_fail, tmp_rx_desc_err_dropped_pkt,
+		tmp_tx_pkts, tmp_tx_bytes;
+	u64 rx_buf_alloc_fail, rx_desc_err_dropped_pkt, rx_pkts,
+		rx_skb_alloc_fail, rx_bytes, tx_pkts, tx_bytes, tx_dropped;
+	int stats_idx, base_stats_idx, max_stats_idx;
+	struct stats *report_stats;
+	int *rx_qid_to_stats_idx;
+	int *tx_qid_to_stats_idx;
+	struct gve_priv *priv;
+	bool skip_nic_stats;
+	unsigned int start;
+	int ring;
+	int i, j;
+
+	ASSERT_RTNL();
+
+	priv = netdev_priv(netdev);
+	report_stats = priv->stats_report->stats;
+	rx_qid_to_stats_idx = kmalloc_array(priv->rx_cfg.num_queues,
+					    sizeof(int), GFP_KERNEL);
+	if (!rx_qid_to_stats_idx)
+		return;
+	tx_qid_to_stats_idx = kmalloc_array(priv->tx_cfg.num_queues,
+					    sizeof(int), GFP_KERNEL);
+	if (!tx_qid_to_stats_idx) {
+		kfree(rx_qid_to_stats_idx);
+		return;
+	}
+	for (rx_pkts = 0, rx_bytes = 0, rx_skb_alloc_fail = 0,
+	     rx_buf_alloc_fail = 0, rx_desc_err_dropped_pkt = 0, ring = 0;
+	     ring < priv->rx_cfg.num_queues; ring++) {
+		if (priv->rx) {
+			do {
+				struct gve_rx_ring *rx = &priv->rx[ring];
+
+				start =
+				  u64_stats_fetch_begin_irq(&priv->rx[ring].statss);
+				tmp_rx_pkts = rx->rpackets;
+				tmp_rx_bytes = rx->rbytes;
+				tmp_rx_skb_alloc_fail = rx->rx_skb_alloc_fail;
+				tmp_rx_buf_alloc_fail = rx->rx_buf_alloc_fail;
+				tmp_rx_desc_err_dropped_pkt =
+					rx->rx_desc_err_dropped_pkt;
+			} while (u64_stats_fetch_retry_irq(&priv->rx[ring].statss,
+						       start));
+			rx_pkts += tmp_rx_pkts;
+			rx_bytes += tmp_rx_bytes;
+			rx_skb_alloc_fail += tmp_rx_skb_alloc_fail;
+			rx_buf_alloc_fail += tmp_rx_buf_alloc_fail;
+			rx_desc_err_dropped_pkt += tmp_rx_desc_err_dropped_pkt;
+		}
+	}
+	for (tx_pkts = 0, tx_bytes = 0, tx_dropped = 0, ring = 0;
+	     ring < priv->tx_cfg.num_queues; ring++) {
+		if (priv->tx) {
+			do {
+				start =
+				  u64_stats_fetch_begin_irq(&priv->tx[ring].statss);
+				tmp_tx_pkts = priv->tx[ring].pkt_done;
+				tmp_tx_bytes = priv->tx[ring].bytes_done;
+			} while (u64_stats_fetch_retry_irq(&priv->tx[ring].statss,
+						       start));
+			tx_pkts += tmp_tx_pkts;
+			tx_bytes += tmp_tx_bytes;
+			tx_dropped += priv->tx[ring].dropped_pkt;
+		}
+	}
+
+	i = 0;
+	data[i++] = rx_pkts;
+	data[i++] = tx_pkts;
+	data[i++] = rx_bytes;
+	data[i++] = tx_bytes;
+	/* total rx dropped packets */
+	data[i++] = rx_skb_alloc_fail + rx_buf_alloc_fail +
+		    rx_desc_err_dropped_pkt;
+	data[i++] = tx_dropped;
+	data[i++] = priv->tx_timeo_cnt;
+	data[i++] = rx_skb_alloc_fail;
+	data[i++] = rx_buf_alloc_fail;
+	data[i++] = rx_desc_err_dropped_pkt;
+	data[i++] = priv->interface_up_cnt;
+	data[i++] = priv->interface_down_cnt;
+	data[i++] = priv->reset_cnt;
+	data[i++] = priv->page_alloc_fail;
+	data[i++] = priv->dma_mapping_error;
+	data[i++] = priv->stats_report_trigger_cnt;
+	i = GVE_MAIN_STATS_LEN;
+
+	/* For rx cross-reporting stats, start from nic rx stats in report */
+	base_stats_idx = GVE_TX_STATS_REPORT_NUM * priv->tx_cfg.num_queues +
+		GVE_RX_STATS_REPORT_NUM * priv->rx_cfg.num_queues;
+	max_stats_idx = NIC_RX_STATS_REPORT_NUM * priv->rx_cfg.num_queues +
+		base_stats_idx;
+	/* Preprocess the stats report for rx, map queue id to start index */
+	skip_nic_stats = false;
+	for (stats_idx = base_stats_idx; stats_idx < max_stats_idx;
+		stats_idx += NIC_RX_STATS_REPORT_NUM) {
+		u32 stat_name = be32_to_cpu(report_stats[stats_idx].stat_name);
+		u32 queue_id = be32_to_cpu(report_stats[stats_idx].queue_id);
+
+		if (stat_name == 0) {
+			/* no stats written by NIC yet */
+			skip_nic_stats = true;
+			break;
+		}
+		rx_qid_to_stats_idx[queue_id] = stats_idx;
+	}
+	/* walk RX rings */
+	if (priv->rx) {
+		for (ring = 0; ring < priv->rx_cfg.num_queues; ring++) {
+			struct gve_rx_ring *rx = &priv->rx[ring];
+
+			data[i++] = rx->fill_cnt;
+			data[i++] = rx->cnt;
+			data[i++] = rx->fill_cnt - rx->cnt;
+			do {
+				start =
+				  u64_stats_fetch_begin_irq(&priv->rx[ring].statss);
+				tmp_rx_bytes = rx->rbytes;
+				tmp_rx_skb_alloc_fail = rx->rx_skb_alloc_fail;
+				tmp_rx_buf_alloc_fail = rx->rx_buf_alloc_fail;
+				tmp_rx_desc_err_dropped_pkt =
+					rx->rx_desc_err_dropped_pkt;
+			} while (u64_stats_fetch_retry_irq(&priv->rx[ring].statss,
+						       start));
+			data[i++] = tmp_rx_bytes;
+			data[i++] = rx->rx_cont_packet_cnt;
+			data[i++] = rx->rx_frag_flip_cnt;
+			data[i++] = rx->rx_frag_copy_cnt;
+			/* rx dropped packets */
+			data[i++] = tmp_rx_skb_alloc_fail +
+				tmp_rx_buf_alloc_fail +
+				tmp_rx_desc_err_dropped_pkt;
+			data[i++] = rx->rx_copybreak_pkt;
+			data[i++] = rx->rx_copied_pkt;
+			/* stats from NIC */
+			if (skip_nic_stats) {
+				/* skip NIC rx stats */
+				i += NIC_RX_STATS_REPORT_NUM;
+				continue;
+			}
+			for (j = 0; j < NIC_RX_STATS_REPORT_NUM; j++) {
+				u64 value =
+				be64_to_cpu(report_stats[rx_qid_to_stats_idx[ring] + j].value);
+
+				data[i++] = value;
+			}
+		}
+	} else {
+		i += priv->rx_cfg.num_queues * NUM_GVE_RX_CNTS;
+	}
+
+	/* For tx cross-reporting stats, start from nic tx stats in report */
+	base_stats_idx = max_stats_idx;
+	max_stats_idx = NIC_TX_STATS_REPORT_NUM * priv->tx_cfg.num_queues +
+		max_stats_idx;
+	/* Preprocess the stats report for tx, map queue id to start index */
+	skip_nic_stats = false;
+	for (stats_idx = base_stats_idx; stats_idx < max_stats_idx;
+		stats_idx += NIC_TX_STATS_REPORT_NUM) {
+		u32 stat_name = be32_to_cpu(report_stats[stats_idx].stat_name);
+		u32 queue_id = be32_to_cpu(report_stats[stats_idx].queue_id);
+
+		if (stat_name == 0) {
+			/* no stats written by NIC yet */
+			skip_nic_stats = true;
+			break;
+		}
+		tx_qid_to_stats_idx[queue_id] = stats_idx;
+	}
+	/* walk TX rings */
+	if (priv->tx) {
+		for (ring = 0; ring < priv->tx_cfg.num_queues; ring++) {
+			struct gve_tx_ring *tx = &priv->tx[ring];
+
+			if (gve_is_gqi(priv)) {
+				data[i++] = tx->req;
+				data[i++] = tx->done;
+				data[i++] = tx->req - tx->done;
+			} else {
+				/* DQO doesn't currently support
+				 * posted/completed descriptor counts;
+				 */
+				data[i++] = 0;
+				data[i++] = 0;
+				data[i++] = tx->dqo_tx.tail - tx->dqo_tx.head;
+			}
+			do {
+				start =
+				  u64_stats_fetch_begin_irq(&priv->tx[ring].statss);
+				tmp_tx_bytes = tx->bytes_done;
+			} while (u64_stats_fetch_retry_irq(&priv->tx[ring].statss,
+						       start));
+			data[i++] = tmp_tx_bytes;
+			data[i++] = tx->wake_queue;
+			data[i++] = tx->stop_queue;
+			data[i++] = gve_tx_load_event_counter(priv, tx);
+			data[i++] = tx->dma_mapping_error;
+			/* stats from NIC */
+			if (skip_nic_stats) {
+				/* skip NIC tx stats */
+				i += NIC_TX_STATS_REPORT_NUM;
+				continue;
+			}
+			for (j = 0; j < NIC_TX_STATS_REPORT_NUM; j++) {
+				u64 value =
+				be64_to_cpu(report_stats[tx_qid_to_stats_idx[ring] + j].value);
+				data[i++] = value;
+			}
+		}
+	} else {
+		i += priv->tx_cfg.num_queues * NUM_GVE_TX_CNTS;
+	}
+
+	kfree(rx_qid_to_stats_idx);
+	kfree(tx_qid_to_stats_idx);
+	/* AQ Stats */
+	data[i++] = priv->adminq_prod_cnt;
+	data[i++] = priv->adminq_cmd_fail;
+	data[i++] = priv->adminq_timeouts;
+	data[i++] = priv->adminq_describe_device_cnt;
+	data[i++] = priv->adminq_cfg_device_resources_cnt;
+	data[i++] = priv->adminq_register_page_list_cnt;
+	data[i++] = priv->adminq_unregister_page_list_cnt;
+	data[i++] = priv->adminq_create_tx_queue_cnt;
+	data[i++] = priv->adminq_create_rx_queue_cnt;
+	data[i++] = priv->adminq_destroy_tx_queue_cnt;
+	data[i++] = priv->adminq_destroy_rx_queue_cnt;
+	data[i++] = priv->adminq_dcfg_device_resources_cnt;
+	data[i++] = priv->adminq_set_driver_parameter_cnt;
+	data[i++] = priv->adminq_report_stats_cnt;
+	data[i++] = priv->adminq_report_link_speed_cnt;
+}
+
+static void gve_get_channels(struct net_device *netdev,
+			     struct ethtool_channels *cmd)
+{
+	struct gve_priv *priv = netdev_priv(netdev);
+
+	cmd->max_rx = priv->rx_cfg.max_queues;
+	cmd->max_tx = priv->tx_cfg.max_queues;
+	cmd->max_other = 0;
+	cmd->max_combined = 0;
+	cmd->rx_count = priv->rx_cfg.num_queues;
+	cmd->tx_count = priv->tx_cfg.num_queues;
+	cmd->other_count = 0;
+	cmd->combined_count = 0;
+}
+
+static int gve_set_channels(struct net_device *netdev,
+			    struct ethtool_channels *cmd)
+{
+	struct gve_priv *priv = netdev_priv(netdev);
+	struct gve_queue_config new_tx_cfg = priv->tx_cfg;
+	struct gve_queue_config new_rx_cfg = priv->rx_cfg;
+	struct ethtool_channels old_settings;
+	int new_tx = cmd->tx_count;
+	int new_rx = cmd->rx_count;
+
+	gve_get_channels(netdev, &old_settings);
+
+	/* Changing combined is not allowed */
+	if (cmd->combined_count != old_settings.combined_count)
+		return -EINVAL;
+
+	if (!new_rx || !new_tx)
+		return -EINVAL;
+
+	if (!netif_carrier_ok(netdev)) {
+		priv->tx_cfg.num_queues = new_tx;
+		priv->rx_cfg.num_queues = new_rx;
+		return 0;
+	}
+
+	new_tx_cfg.num_queues = new_tx;
+	new_rx_cfg.num_queues = new_rx;
+
+	return gve_adjust_queues(priv, new_rx_cfg, new_tx_cfg);
+}
+
+static void gve_get_ringparam(struct net_device *netdev,
+			      struct ethtool_ringparam *cmd,
+			      struct kernel_ethtool_ringparam *kernel_cmd,
+			      struct netlink_ext_ack *extack)
+{
+	struct gve_priv *priv = netdev_priv(netdev);
+
+	cmd->rx_max_pending = priv->rx_desc_cnt;
+	cmd->tx_max_pending = priv->tx_desc_cnt;
+	cmd->rx_pending = priv->rx_desc_cnt;
+	cmd->tx_pending = priv->tx_desc_cnt;
+}
+
+static int gve_user_reset(struct net_device *netdev, u32 *flags)
+{
+	struct gve_priv *priv = netdev_priv(netdev);
+
+	if (*flags == ETH_RESET_ALL) {
+		*flags = 0;
+		return gve_reset(priv, true);
+	}
+
+	return -EOPNOTSUPP;
+}
+
+static int gve_get_tunable(struct net_device *netdev,
+			   const struct ethtool_tunable *etuna, void *value)
+{
+	struct gve_priv *priv = netdev_priv(netdev);
+
+	switch (etuna->id) {
+	case ETHTOOL_RX_COPYBREAK:
+		*(u32 *)value = priv->rx_copybreak;
+		return 0;
+	default:
+		return -EOPNOTSUPP;
+	}
+}
+
+static int gve_set_tunable(struct net_device *netdev,
+			   const struct ethtool_tunable *etuna,
+			   const void *value)
+{
+	struct gve_priv *priv = netdev_priv(netdev);
+	u32 len;
+
+	switch (etuna->id) {
+	case ETHTOOL_RX_COPYBREAK:
+	{
+		u32 max_copybreak = gve_is_gqi(priv) ?
+			(PAGE_SIZE / 2) : priv->data_buffer_size_dqo;
+
+		len = *(u32 *)value;
+		if (len > max_copybreak)
+			return -EINVAL;
+		priv->rx_copybreak = len;
+		return 0;
+	}
+	default:
+		return -EOPNOTSUPP;
+	}
+}
+
+static u32 gve_get_priv_flags(struct net_device *netdev)
+{
+	struct gve_priv *priv = netdev_priv(netdev);
+	u32 ret_flags = 0;
+
+	/* Only 1 flag exists currently: report-stats (BIT(O)), so set that flag. */
+	if (priv->ethtool_flags & BIT(0))
+		ret_flags |= BIT(0);
+	return ret_flags;
+}
+
+static int gve_set_priv_flags(struct net_device *netdev, u32 flags)
+{
+	struct gve_priv *priv = netdev_priv(netdev);
+	u64 ori_flags, new_flags;
+
+	ori_flags = READ_ONCE(priv->ethtool_flags);
+	new_flags = ori_flags;
+
+	/* Only one priv flag exists: report-stats (BIT(0))*/
+	if (flags & BIT(0))
+		new_flags |= BIT(0);
+	else
+		new_flags &= ~(BIT(0));
+	priv->ethtool_flags = new_flags;
+	/* start report-stats timer when user turns report stats on. */
+	if (flags & BIT(0)) {
+		mod_timer(&priv->stats_report_timer,
+			  round_jiffies(jiffies +
+					msecs_to_jiffies(priv->stats_report_timer_period)));
+	}
+	/* Zero off gve stats when report-stats turned off and */
+	/* delete report stats timer. */
+	if (!(flags & BIT(0)) && (ori_flags & BIT(0))) {
+		int tx_stats_num = GVE_TX_STATS_REPORT_NUM *
+			priv->tx_cfg.num_queues;
+		int rx_stats_num = GVE_RX_STATS_REPORT_NUM *
+			priv->rx_cfg.num_queues;
+
+		memset(priv->stats_report->stats, 0, (tx_stats_num + rx_stats_num) *
+				   sizeof(struct stats));
+		del_timer_sync(&priv->stats_report_timer);
+	}
+	return 0;
+}
+
+static int gve_get_link_ksettings(struct net_device *netdev,
+				  struct ethtool_link_ksettings *cmd)
+{
+	struct gve_priv *priv = netdev_priv(netdev);
+	int err = 0;
+
+	if (priv->link_speed == 0)
+		err = gve_adminq_report_link_speed(priv);
+
+	cmd->base.speed = priv->link_speed;
+
+	cmd->base.duplex = DUPLEX_FULL;
+
+	return err;
+}
+
+static int gve_get_coalesce(struct net_device *netdev,
+			    struct ethtool_coalesce *ec,
+			    struct kernel_ethtool_coalesce *kernel_ec,
+			    struct netlink_ext_ack *extack)
+{
+	struct gve_priv *priv = netdev_priv(netdev);
+
+	if (gve_is_gqi(priv))
+		return -EOPNOTSUPP;
+	ec->tx_coalesce_usecs = priv->tx_coalesce_usecs;
+	ec->rx_coalesce_usecs = priv->rx_coalesce_usecs;
+
+	return 0;
+}
+
+static int gve_set_coalesce(struct net_device *netdev,
+			    struct ethtool_coalesce *ec,
+			    struct kernel_ethtool_coalesce *kernel_ec,
+			    struct netlink_ext_ack *extack)
+{
+	struct gve_priv *priv = netdev_priv(netdev);
+	u32 tx_usecs_orig = priv->tx_coalesce_usecs;
+	u32 rx_usecs_orig = priv->rx_coalesce_usecs;
+	int idx;
+
+	if (gve_is_gqi(priv))
+		return -EOPNOTSUPP;
+
+	if (ec->tx_coalesce_usecs > GVE_MAX_ITR_INTERVAL_DQO ||
+	    ec->rx_coalesce_usecs > GVE_MAX_ITR_INTERVAL_DQO)
+		return -EINVAL;
+	priv->tx_coalesce_usecs = ec->tx_coalesce_usecs;
+	priv->rx_coalesce_usecs = ec->rx_coalesce_usecs;
+
+	if (tx_usecs_orig != priv->tx_coalesce_usecs) {
+		for (idx = 0; idx < priv->tx_cfg.num_queues; idx++) {
+			int ntfy_idx = gve_tx_idx_to_ntfy(priv, idx);
+			struct gve_notify_block *block = &priv->ntfy_blocks[ntfy_idx];
+
+			gve_set_itr_coalesce_usecs_dqo(priv, block,
+						       priv->tx_coalesce_usecs);
+		}
+	}
+
+	if (rx_usecs_orig != priv->rx_coalesce_usecs) {
+		for (idx = 0; idx < priv->rx_cfg.num_queues; idx++) {
+			int ntfy_idx = gve_rx_idx_to_ntfy(priv, idx);
+			struct gve_notify_block *block = &priv->ntfy_blocks[ntfy_idx];
+
+			gve_set_itr_coalesce_usecs_dqo(priv, block,
+						       priv->rx_coalesce_usecs);
+		}
+	}
+
+	return 0;
+}
+
+const struct ethtool_ops gve_ethtool_ops = {
+	.supported_coalesce_params = ETHTOOL_COALESCE_USECS,
+	.get_drvinfo = gve_get_drvinfo,
+	.get_strings = gve_get_strings,
+	.get_sset_count = gve_get_sset_count,
+	.get_ethtool_stats = gve_get_ethtool_stats,
+	.set_msglevel = gve_set_msglevel,
+	.get_msglevel = gve_get_msglevel,
+	.set_channels = gve_set_channels,
+	.get_channels = gve_get_channels,
+	.get_link = ethtool_op_get_link,
+	.get_coalesce = gve_get_coalesce,
+	.set_coalesce = gve_set_coalesce,
+	.get_ringparam = gve_get_ringparam,
+	.reset = gve_user_reset,
+	.get_tunable = gve_get_tunable,
+	.set_tunable = gve_set_tunable,
+	.get_priv_flags = gve_get_priv_flags,
+	.set_priv_flags = gve_set_priv_flags,
+	.get_link_ksettings = gve_get_link_ksettings
+};