1 files changed, 597 insertions, 118 deletions

diff --git a/drivers/net/ethernet/google/gve/gve_adminq.c b/drivers/net/ethernet/google/gve/gve_adminq.c
index 12fbd723ecc6..3e8fc33cc11f 100644
--- a/drivers/net/ethernet/google/gve/gve_adminq.c
+++ b/drivers/net/ethernet/google/gve/gve_adminq.c
@@ -32,6 +32,8 @@ struct gve_device_option *gve_get_next_option(struct gve_device_descriptor *desc
 	return option_end > descriptor_end ? NULL : (struct gve_device_option *)option_end;
 }
 
+#define GVE_DEVICE_OPTION_NO_MIN_RING_SIZE	8
+
 static
 void gve_parse_device_option(struct gve_priv *priv,
 			     struct gve_device_descriptor *device_descriptor,
@@ -40,7 +42,11 @@ void gve_parse_device_option(struct gve_priv *priv,
 			     struct gve_device_option_gqi_qpl **dev_op_gqi_qpl,
 			     struct gve_device_option_dqo_rda **dev_op_dqo_rda,
 			     struct gve_device_option_jumbo_frames **dev_op_jumbo_frames,
-			     struct gve_device_option_dqo_qpl **dev_op_dqo_qpl)
+			     struct gve_device_option_dqo_qpl **dev_op_dqo_qpl,
+			     struct gve_device_option_buffer_sizes **dev_op_buffer_sizes,
+			     struct gve_device_option_flow_steering **dev_op_flow_steering,
+			     struct gve_device_option_rss_config **dev_op_rss_config,
+			     struct gve_device_option_modify_ring **dev_op_modify_ring)
 {
 	u32 req_feat_mask = be32_to_cpu(option->required_features_mask);
 	u16 option_length = be16_to_cpu(option->option_length);
@@ -147,6 +153,78 @@ void gve_parse_device_option(struct gve_priv *priv,
 		}
 		*dev_op_jumbo_frames = (void *)(option + 1);
 		break;
+	case GVE_DEV_OPT_ID_BUFFER_SIZES:
+		if (option_length < sizeof(**dev_op_buffer_sizes) ||
+		    req_feat_mask != GVE_DEV_OPT_REQ_FEAT_MASK_BUFFER_SIZES) {
+			dev_warn(&priv->pdev->dev, GVE_DEVICE_OPTION_ERROR_FMT,
+				 "Buffer Sizes",
+				 (int)sizeof(**dev_op_buffer_sizes),
+				 GVE_DEV_OPT_REQ_FEAT_MASK_BUFFER_SIZES,
+				 option_length, req_feat_mask);
+			break;
+		}
+
+		if (option_length > sizeof(**dev_op_buffer_sizes))
+			dev_warn(&priv->pdev->dev,
+				 GVE_DEVICE_OPTION_TOO_BIG_FMT,
+				 "Buffer Sizes");
+		*dev_op_buffer_sizes = (void *)(option + 1);
+		break;
+	case GVE_DEV_OPT_ID_MODIFY_RING:
+		if (option_length < GVE_DEVICE_OPTION_NO_MIN_RING_SIZE ||
+		    req_feat_mask != GVE_DEV_OPT_REQ_FEAT_MASK_MODIFY_RING) {
+			dev_warn(&priv->pdev->dev, GVE_DEVICE_OPTION_ERROR_FMT,
+				 "Modify Ring", (int)sizeof(**dev_op_modify_ring),
+				 GVE_DEV_OPT_REQ_FEAT_MASK_MODIFY_RING,
+				 option_length, req_feat_mask);
+			break;
+		}
+
+		if (option_length > sizeof(**dev_op_modify_ring)) {
+			dev_warn(&priv->pdev->dev,
+				 GVE_DEVICE_OPTION_TOO_BIG_FMT, "Modify Ring");
+		}
+
+		*dev_op_modify_ring = (void *)(option + 1);
+
+		/* device has not provided min ring size */
+		if (option_length == GVE_DEVICE_OPTION_NO_MIN_RING_SIZE)
+			priv->default_min_ring_size = true;
+		break;
+	case GVE_DEV_OPT_ID_FLOW_STEERING:
+		if (option_length < sizeof(**dev_op_flow_steering) ||
+		    req_feat_mask != GVE_DEV_OPT_REQ_FEAT_MASK_FLOW_STEERING) {
+			dev_warn(&priv->pdev->dev, GVE_DEVICE_OPTION_ERROR_FMT,
+				 "Flow Steering",
+				 (int)sizeof(**dev_op_flow_steering),
+				 GVE_DEV_OPT_REQ_FEAT_MASK_FLOW_STEERING,
+				 option_length, req_feat_mask);
+			break;
+		}
+
+		if (option_length > sizeof(**dev_op_flow_steering))
+			dev_warn(&priv->pdev->dev,
+				 GVE_DEVICE_OPTION_TOO_BIG_FMT,
+				 "Flow Steering");
+		*dev_op_flow_steering = (void *)(option + 1);
+		break;
+	case GVE_DEV_OPT_ID_RSS_CONFIG:
+		if (option_length < sizeof(**dev_op_rss_config) ||
+		    req_feat_mask != GVE_DEV_OPT_REQ_FEAT_MASK_RSS_CONFIG) {
+			dev_warn(&priv->pdev->dev, GVE_DEVICE_OPTION_ERROR_FMT,
+				 "RSS config",
+				 (int)sizeof(**dev_op_rss_config),
+				 GVE_DEV_OPT_REQ_FEAT_MASK_RSS_CONFIG,
+				 option_length, req_feat_mask);
+			break;
+		}
+
+		if (option_length > sizeof(**dev_op_rss_config))
+			dev_warn(&priv->pdev->dev,
+				 GVE_DEVICE_OPTION_TOO_BIG_FMT,
+				 "RSS config");
+		*dev_op_rss_config = (void *)(option + 1);
+		break;
 	default:
 		/* If we don't recognize the option just continue
 		 * without doing anything.
@@ -164,7 +242,11 @@ gve_process_device_options(struct gve_priv *priv,
 			   struct gve_device_option_gqi_qpl **dev_op_gqi_qpl,
 			   struct gve_device_option_dqo_rda **dev_op_dqo_rda,
 			   struct gve_device_option_jumbo_frames **dev_op_jumbo_frames,
-			   struct gve_device_option_dqo_qpl **dev_op_dqo_qpl)
+			   struct gve_device_option_dqo_qpl **dev_op_dqo_qpl,
+			   struct gve_device_option_buffer_sizes **dev_op_buffer_sizes,
+			   struct gve_device_option_flow_steering **dev_op_flow_steering,
+			   struct gve_device_option_rss_config **dev_op_rss_config,
+			   struct gve_device_option_modify_ring **dev_op_modify_ring)
 {
 	const int num_options = be16_to_cpu(descriptor->num_device_options);
 	struct gve_device_option *dev_opt;
@@ -185,7 +267,9 @@ gve_process_device_options(struct gve_priv *priv,
 		gve_parse_device_option(priv, descriptor, dev_opt,
 					dev_op_gqi_rda, dev_op_gqi_qpl,
 					dev_op_dqo_rda, dev_op_jumbo_frames,
-					dev_op_dqo_qpl);
+					dev_op_dqo_qpl, dev_op_buffer_sizes,
+					dev_op_flow_steering, dev_op_rss_config,
+					dev_op_modify_ring);
 		dev_opt = next_opt;
 	}
 
@@ -223,6 +307,10 @@ int gve_adminq_alloc(struct device *dev, struct gve_priv *priv)
 	priv->adminq_report_stats_cnt = 0;
 	priv->adminq_report_link_speed_cnt = 0;
 	priv->adminq_get_ptype_map_cnt = 0;
+	priv->adminq_query_flow_rules_cnt = 0;
+	priv->adminq_cfg_flow_rule_cnt = 0;
+	priv->adminq_cfg_rss_cnt = 0;
+	priv->adminq_query_rss_cnt = 0;
 
 	/* Setup Admin queue with the device */
 	if (priv->pdev->revision < 0x1) {
@@ -239,6 +327,7 @@ int gve_adminq_alloc(struct device *dev, struct gve_priv *priv)
 			    &priv->reg_bar0->adminq_base_address_lo);
 		iowrite32be(GVE_DRIVER_STATUS_RUN_MASK, &priv->reg_bar0->driver_status);
 	}
+	mutex_init(&priv->adminq_lock);
 	gve_set_admin_queue_ok(priv);
 	return 0;
 }
@@ -415,6 +504,8 @@ static int gve_adminq_issue_cmd(struct gve_priv *priv,
 
 	memcpy(cmd, cmd_orig, sizeof(*cmd_orig));
 	opcode = be32_to_cpu(READ_ONCE(cmd->opcode));
+	if (opcode == GVE_ADMINQ_EXTENDED_COMMAND)
+		opcode = be32_to_cpu(cmd->extended_command.inner_opcode);
 
 	switch (opcode) {
 	case GVE_ADMINQ_DESCRIBE_DEVICE:
@@ -459,6 +550,18 @@ static int gve_adminq_issue_cmd(struct gve_priv *priv,
 	case GVE_ADMINQ_VERIFY_DRIVER_COMPATIBILITY:
 		priv->adminq_verify_driver_compatibility_cnt++;
 		break;
+	case GVE_ADMINQ_QUERY_FLOW_RULES:
+		priv->adminq_query_flow_rules_cnt++;
+		break;
+	case GVE_ADMINQ_CONFIGURE_FLOW_RULE:
+		priv->adminq_cfg_flow_rule_cnt++;
+		break;
+	case GVE_ADMINQ_CONFIGURE_RSS:
+		priv->adminq_cfg_rss_cnt++;
+		break;
+	case GVE_ADMINQ_QUERY_RSS:
+		priv->adminq_query_rss_cnt++;
+		break;
 	default:
 		dev_err(&priv->pdev->dev, "unknown AQ command opcode %d\n", opcode);
 	}
@@ -466,28 +569,58 @@ static int gve_adminq_issue_cmd(struct gve_priv *priv,
 	return 0;
 }
 
-/* This function is not threadsafe - the caller is responsible for any
- * necessary locks.
- * The caller is also responsible for making sure there are no commands
- * waiting to be executed.
- */
 static int gve_adminq_execute_cmd(struct gve_priv *priv,
 				  union gve_adminq_command *cmd_orig)
 {
 	u32 tail, head;
 	int err;
 
+	mutex_lock(&priv->adminq_lock);
 	tail = ioread32be(&priv->reg_bar0->adminq_event_counter);
 	head = priv->adminq_prod_cnt;
-	if (tail != head)
-		// This is not a valid path
-		return -EINVAL;
+	if (tail != head) {
+		err = -EINVAL;
+		goto out;
+	}
 
 	err = gve_adminq_issue_cmd(priv, cmd_orig);
 	if (err)
-		return err;
+		goto out;
 
-	return gve_adminq_kick_and_wait(priv);
+	err = gve_adminq_kick_and_wait(priv);
+
+out:
+	mutex_unlock(&priv->adminq_lock);
+	return err;
+}
+
+static int gve_adminq_execute_extended_cmd(struct gve_priv *priv, u32 opcode,
+					   size_t cmd_size, void *cmd_orig)
+{
+	union gve_adminq_command cmd;
+	dma_addr_t inner_cmd_bus;
+	void *inner_cmd;
+	int err;
+
+	inner_cmd = dma_alloc_coherent(&priv->pdev->dev, cmd_size,
+				       &inner_cmd_bus, GFP_KERNEL);
+	if (!inner_cmd)
+		return -ENOMEM;
+
+	memcpy(inner_cmd, cmd_orig, cmd_size);
+
+	memset(&cmd, 0, sizeof(cmd));
+	cmd.opcode = cpu_to_be32(GVE_ADMINQ_EXTENDED_COMMAND);
+	cmd.extended_command = (struct gve_adminq_extended_command) {
+		.inner_opcode = cpu_to_be32(opcode),
+		.inner_length = cpu_to_be32(cmd_size),
+		.inner_command_addr = cpu_to_be64(inner_cmd_bus),
+	};
+
+	err = gve_adminq_execute_cmd(priv, &cmd);
+
+	dma_free_coherent(&priv->pdev->dev, cmd_size, inner_cmd, inner_cmd_bus);
+	return err;
 }
 
 /* The device specifies that the management vector can either be the first irq
@@ -546,6 +679,7 @@ static int gve_adminq_create_tx_queue(struct gve_priv *priv, u32 queue_index)
 			cpu_to_be64(tx->q_resources_bus),
 		.tx_ring_addr = cpu_to_be64(tx->bus),
 		.ntfy_id = cpu_to_be32(tx->ntfy_id),
+		.tx_ring_size = cpu_to_be16(priv->tx_desc_cnt),
 	};
 
 	if (gve_is_gqi(priv)) {
@@ -554,24 +688,17 @@ static int gve_adminq_create_tx_queue(struct gve_priv *priv, u32 queue_index)
 
 		cmd.create_tx_queue.queue_page_list_id = cpu_to_be32(qpl_id);
 	} else {
-		u16 comp_ring_size;
 		u32 qpl_id = 0;
 
-		if (priv->queue_format == GVE_DQO_RDA_FORMAT) {
+		if (priv->queue_format == GVE_DQO_RDA_FORMAT)
 			qpl_id = GVE_RAW_ADDRESSING_QPL_ID;
-			comp_ring_size =
-				priv->options_dqo_rda.tx_comp_ring_entries;
-		} else {
+		else
 			qpl_id = tx->dqo.qpl->id;
-			comp_ring_size = priv->tx_desc_cnt;
-		}
 		cmd.create_tx_queue.queue_page_list_id = cpu_to_be32(qpl_id);
-		cmd.create_tx_queue.tx_ring_size =
-			cpu_to_be16(priv->tx_desc_cnt);
 		cmd.create_tx_queue.tx_comp_ring_addr =
 			cpu_to_be64(tx->complq_bus_dqo);
 		cmd.create_tx_queue.tx_comp_ring_size =
-			cpu_to_be16(comp_ring_size);
+			cpu_to_be16(priv->tx_desc_cnt);
 	}
 
 	return gve_adminq_issue_cmd(priv, &cmd);
@@ -591,60 +718,71 @@ int gve_adminq_create_tx_queues(struct gve_priv *priv, u32 start_id, u32 num_que
 	return gve_adminq_kick_and_wait(priv);
 }
 
-static int gve_adminq_create_rx_queue(struct gve_priv *priv, u32 queue_index)
+static void gve_adminq_get_create_rx_queue_cmd(struct gve_priv *priv,
+					       union gve_adminq_command *cmd,
+					       u32 queue_index)
 {
 	struct gve_rx_ring *rx = &priv->rx[queue_index];
-	union gve_adminq_command cmd;
 
-	memset(&cmd, 0, sizeof(cmd));
-	cmd.opcode = cpu_to_be32(GVE_ADMINQ_CREATE_RX_QUEUE);
-	cmd.create_rx_queue = (struct gve_adminq_create_rx_queue) {
+	memset(cmd, 0, sizeof(*cmd));
+	cmd->opcode = cpu_to_be32(GVE_ADMINQ_CREATE_RX_QUEUE);
+	cmd->create_rx_queue = (struct gve_adminq_create_rx_queue) {
 		.queue_id = cpu_to_be32(queue_index),
 		.ntfy_id = cpu_to_be32(rx->ntfy_id),
 		.queue_resources_addr = cpu_to_be64(rx->q_resources_bus),
+		.rx_ring_size = cpu_to_be16(priv->rx_desc_cnt),
+		.packet_buffer_size = cpu_to_be16(rx->packet_buffer_size),
 	};
 
 	if (gve_is_gqi(priv)) {
 		u32 qpl_id = priv->queue_format == GVE_GQI_RDA_FORMAT ?
 			GVE_RAW_ADDRESSING_QPL_ID : rx->data.qpl->id;
 
-		cmd.create_rx_queue.rx_desc_ring_addr =
-			cpu_to_be64(rx->desc.bus),
-		cmd.create_rx_queue.rx_data_ring_addr =
-			cpu_to_be64(rx->data.data_bus),
-		cmd.create_rx_queue.index = cpu_to_be32(queue_index);
-		cmd.create_rx_queue.queue_page_list_id = cpu_to_be32(qpl_id);
-		cmd.create_rx_queue.packet_buffer_size = cpu_to_be16(rx->packet_buffer_size);
+		cmd->create_rx_queue.rx_desc_ring_addr =
+			cpu_to_be64(rx->desc.bus);
+		cmd->create_rx_queue.rx_data_ring_addr =
+			cpu_to_be64(rx->data.data_bus);
+		cmd->create_rx_queue.index = cpu_to_be32(queue_index);
+		cmd->create_rx_queue.queue_page_list_id = cpu_to_be32(qpl_id);
 	} else {
-		u16 rx_buff_ring_entries;
 		u32 qpl_id = 0;
 
-		if (priv->queue_format == GVE_DQO_RDA_FORMAT) {
+		if (priv->queue_format == GVE_DQO_RDA_FORMAT)
 			qpl_id = GVE_RAW_ADDRESSING_QPL_ID;
-			rx_buff_ring_entries =
-				priv->options_dqo_rda.rx_buff_ring_entries;
-		} else {
+		else
 			qpl_id = rx->dqo.qpl->id;
-			rx_buff_ring_entries = priv->rx_desc_cnt;
-		}
-		cmd.create_rx_queue.queue_page_list_id = cpu_to_be32(qpl_id);
-		cmd.create_rx_queue.rx_ring_size =
-			cpu_to_be16(priv->rx_desc_cnt);
-		cmd.create_rx_queue.rx_desc_ring_addr =
+		cmd->create_rx_queue.queue_page_list_id = cpu_to_be32(qpl_id);
+		cmd->create_rx_queue.rx_desc_ring_addr =
 			cpu_to_be64(rx->dqo.complq.bus);
-		cmd.create_rx_queue.rx_data_ring_addr =
+		cmd->create_rx_queue.rx_data_ring_addr =
 			cpu_to_be64(rx->dqo.bufq.bus);
-		cmd.create_rx_queue.packet_buffer_size =
-			cpu_to_be16(priv->data_buffer_size_dqo);
-		cmd.create_rx_queue.rx_buff_ring_size =
-			cpu_to_be16(rx_buff_ring_entries);
-		cmd.create_rx_queue.enable_rsc =
+		cmd->create_rx_queue.rx_buff_ring_size =
+			cpu_to_be16(priv->rx_desc_cnt);
+		cmd->create_rx_queue.enable_rsc =
 			!!(priv->dev->features & NETIF_F_LRO);
+		if (priv->header_split_enabled)
+			cmd->create_rx_queue.header_buffer_size =
+				cpu_to_be16(priv->header_buf_size);
 	}
+}
 
+static int gve_adminq_create_rx_queue(struct gve_priv *priv, u32 queue_index)
+{
+	union gve_adminq_command cmd;
+
+	gve_adminq_get_create_rx_queue_cmd(priv, &cmd, queue_index);
 	return gve_adminq_issue_cmd(priv, &cmd);
 }
 
+/* Unlike gve_adminq_create_rx_queue, this actually rings the doorbell */
+int gve_adminq_create_single_rx_queue(struct gve_priv *priv, u32 queue_index)
+{
+	union gve_adminq_command cmd;
+
+	gve_adminq_get_create_rx_queue_cmd(priv, &cmd, queue_index);
+	return gve_adminq_execute_cmd(priv, &cmd);
+}
+
 int gve_adminq_create_rx_queues(struct gve_priv *priv, u32 num_queues)
 {
 	int err;
@@ -691,22 +829,31 @@ int gve_adminq_destroy_tx_queues(struct gve_priv *priv, u32 start_id, u32 num_qu
 	return gve_adminq_kick_and_wait(priv);
 }
 
+static void gve_adminq_make_destroy_rx_queue_cmd(union gve_adminq_command *cmd,
+						 u32 queue_index)
+{
+	memset(cmd, 0, sizeof(*cmd));
+	cmd->opcode = cpu_to_be32(GVE_ADMINQ_DESTROY_RX_QUEUE);
+	cmd->destroy_rx_queue = (struct gve_adminq_destroy_rx_queue) {
+		.queue_id = cpu_to_be32(queue_index),
+	};
+}
+
 static int gve_adminq_destroy_rx_queue(struct gve_priv *priv, u32 queue_index)
 {
 	union gve_adminq_command cmd;
-	int err;
 
-	memset(&cmd, 0, sizeof(cmd));
-	cmd.opcode = cpu_to_be32(GVE_ADMINQ_DESTROY_RX_QUEUE);
-	cmd.destroy_rx_queue = (struct gve_adminq_destroy_rx_queue) {
-		.queue_id = cpu_to_be32(queue_index),
-	};
+	gve_adminq_make_destroy_rx_queue_cmd(&cmd, queue_index);
+	return gve_adminq_issue_cmd(priv, &cmd);
+}
 
-	err = gve_adminq_issue_cmd(priv, &cmd);
-	if (err)
-		return err;
+/* Unlike gve_adminq_destroy_rx_queue, this actually rings the doorbell */
+int gve_adminq_destroy_single_rx_queue(struct gve_priv *priv, u32 queue_index)
+{
+	union gve_adminq_command cmd;
 
-	return 0;
+	gve_adminq_make_destroy_rx_queue_cmd(&cmd, queue_index);
+	return gve_adminq_execute_cmd(priv, &cmd);
 }
 
 int gve_adminq_destroy_rx_queues(struct gve_priv *priv, u32 num_queues)
@@ -723,31 +870,26 @@ int gve_adminq_destroy_rx_queues(struct gve_priv *priv, u32 num_queues)
 	return gve_adminq_kick_and_wait(priv);
 }
 
-static int gve_set_desc_cnt(struct gve_priv *priv,
-			    struct gve_device_descriptor *descriptor)
+static void gve_set_default_desc_cnt(struct gve_priv *priv,
+			const struct gve_device_descriptor *descriptor)
 {
 	priv->tx_desc_cnt = be16_to_cpu(descriptor->tx_queue_entries);
 	priv->rx_desc_cnt = be16_to_cpu(descriptor->rx_queue_entries);
-	return 0;
+
+	/* set default ranges */
+	priv->max_tx_desc_cnt = priv->tx_desc_cnt;
+	priv->max_rx_desc_cnt = priv->rx_desc_cnt;
+	priv->min_tx_desc_cnt = priv->tx_desc_cnt;
+	priv->min_rx_desc_cnt = priv->rx_desc_cnt;
 }
 
-static int
-gve_set_desc_cnt_dqo(struct gve_priv *priv,
-		     const struct gve_device_descriptor *descriptor,
-		     const struct gve_device_option_dqo_rda *dev_op_dqo_rda)
+static void gve_set_default_rss_sizes(struct gve_priv *priv)
 {
-	priv->tx_desc_cnt = be16_to_cpu(descriptor->tx_queue_entries);
-	priv->rx_desc_cnt = be16_to_cpu(descriptor->rx_queue_entries);
-
-	if (priv->queue_format == GVE_DQO_QPL_FORMAT)
-		return 0;
-
-	priv->options_dqo_rda.tx_comp_ring_entries =
-		be16_to_cpu(dev_op_dqo_rda->tx_comp_ring_entries);
-	priv->options_dqo_rda.rx_buff_ring_entries =
-		be16_to_cpu(dev_op_dqo_rda->rx_buff_ring_entries);
-
-	return 0;
+	if (!gve_is_gqi(priv)) {
+		priv->rss_key_size = GVE_RSS_KEY_SIZE;
+		priv->rss_lut_size = GVE_RSS_INDIR_SIZE;
+		priv->cache_rss_config = true;
+	}
 }
 
 static void gve_enable_supported_features(struct gve_priv *priv,
@@ -755,7 +897,15 @@ static void gve_enable_supported_features(struct gve_priv *priv,
 					  const struct gve_device_option_jumbo_frames
 					  *dev_op_jumbo_frames,
 					  const struct gve_device_option_dqo_qpl
-					  *dev_op_dqo_qpl)
+					  *dev_op_dqo_qpl,
+					  const struct gve_device_option_buffer_sizes
+					  *dev_op_buffer_sizes,
+					  const struct gve_device_option_flow_steering
+					  *dev_op_flow_steering,
+					  const struct gve_device_option_rss_config
+					  *dev_op_rss_config,
+					  const struct gve_device_option_modify_ring
+					  *dev_op_modify_ring)
 {
 	/* Before control reaches this point, the page-size-capped max MTU from
 	 * the gve_device_descriptor field has already been stored in
@@ -772,18 +922,73 @@ static void gve_enable_supported_features(struct gve_priv *priv,
 	if (dev_op_dqo_qpl) {
 		priv->tx_pages_per_qpl =
 			be16_to_cpu(dev_op_dqo_qpl->tx_pages_per_qpl);
-		priv->rx_pages_per_qpl =
-			be16_to_cpu(dev_op_dqo_qpl->rx_pages_per_qpl);
 		if (priv->tx_pages_per_qpl == 0)
 			priv->tx_pages_per_qpl = DQO_QPL_DEFAULT_TX_PAGES;
-		if (priv->rx_pages_per_qpl == 0)
-			priv->rx_pages_per_qpl = DQO_QPL_DEFAULT_RX_PAGES;
+	}
+
+	if (dev_op_buffer_sizes &&
+	    (supported_features_mask & GVE_SUP_BUFFER_SIZES_MASK)) {
+		priv->max_rx_buffer_size =
+			be16_to_cpu(dev_op_buffer_sizes->packet_buffer_size);
+		priv->header_buf_size =
+			be16_to_cpu(dev_op_buffer_sizes->header_buffer_size);
+		dev_info(&priv->pdev->dev,
+			 "BUFFER SIZES device option enabled with max_rx_buffer_size of %u, header_buf_size of %u.\n",
+			 priv->max_rx_buffer_size, priv->header_buf_size);
+	}
+
+	/* Read and store ring size ranges given by device */
+	if (dev_op_modify_ring &&
+	    (supported_features_mask & GVE_SUP_MODIFY_RING_MASK)) {
+		priv->modify_ring_size_enabled = true;
+
+		/* max ring size for DQO QPL should not be overwritten because of device limit */
+		if (priv->queue_format != GVE_DQO_QPL_FORMAT) {
+			priv->max_rx_desc_cnt = be16_to_cpu(dev_op_modify_ring->max_rx_ring_size);
+			priv->max_tx_desc_cnt = be16_to_cpu(dev_op_modify_ring->max_tx_ring_size);
+		}
+		if (priv->default_min_ring_size) {
+			/* If device hasn't provided minimums, use default minimums */
+			priv->min_tx_desc_cnt = GVE_DEFAULT_MIN_TX_RING_SIZE;
+			priv->min_rx_desc_cnt = GVE_DEFAULT_MIN_RX_RING_SIZE;
+		} else {
+			priv->min_rx_desc_cnt = be16_to_cpu(dev_op_modify_ring->min_rx_ring_size);
+			priv->min_tx_desc_cnt = be16_to_cpu(dev_op_modify_ring->min_tx_ring_size);
+		}
+	}
+
+	if (dev_op_flow_steering &&
+	    (supported_features_mask & GVE_SUP_FLOW_STEERING_MASK)) {
+		if (dev_op_flow_steering->max_flow_rules) {
+			priv->max_flow_rules =
+				be32_to_cpu(dev_op_flow_steering->max_flow_rules);
+			priv->dev->hw_features |= NETIF_F_NTUPLE;
+			dev_info(&priv->pdev->dev,
+				 "FLOW STEERING device option enabled with max rule limit of %u.\n",
+				 priv->max_flow_rules);
+		}
+	}
+
+	if (dev_op_rss_config &&
+	    (supported_features_mask & GVE_SUP_RSS_CONFIG_MASK)) {
+		priv->rss_key_size =
+			be16_to_cpu(dev_op_rss_config->hash_key_size);
+		priv->rss_lut_size =
+			be16_to_cpu(dev_op_rss_config->hash_lut_size);
+		priv->cache_rss_config = false;
+		dev_dbg(&priv->pdev->dev,
+			"RSS device option enabled with key size of %u, lut size of %u.\n",
+			priv->rss_key_size, priv->rss_lut_size);
 	}
 }
 
 int gve_adminq_describe_device(struct gve_priv *priv)
 {
+	struct gve_device_option_flow_steering *dev_op_flow_steering = NULL;
+	struct gve_device_option_buffer_sizes *dev_op_buffer_sizes = NULL;
 	struct gve_device_option_jumbo_frames *dev_op_jumbo_frames = NULL;
+	struct gve_device_option_modify_ring *dev_op_modify_ring = NULL;
+	struct gve_device_option_rss_config *dev_op_rss_config = NULL;
 	struct gve_device_option_gqi_rda *dev_op_gqi_rda = NULL;
 	struct gve_device_option_gqi_qpl *dev_op_gqi_qpl = NULL;
 	struct gve_device_option_dqo_rda *dev_op_dqo_rda = NULL;
@@ -815,8 +1020,11 @@ int gve_adminq_describe_device(struct gve_priv *priv)
 
 	err = gve_process_device_options(priv, descriptor, &dev_op_gqi_rda,
 					 &dev_op_gqi_qpl, &dev_op_dqo_rda,
-					 &dev_op_jumbo_frames,
-					 &dev_op_dqo_qpl);
+					 &dev_op_jumbo_frames, &dev_op_dqo_qpl,
+					 &dev_op_buffer_sizes,
+					 &dev_op_flow_steering,
+					 &dev_op_rss_config,
+					 &dev_op_modify_ring);
 	if (err)
 		goto free_device_descriptor;
 
@@ -851,15 +1059,15 @@ int gve_adminq_describe_device(struct gve_priv *priv)
 		dev_info(&priv->pdev->dev,
 			 "Driver is running with GQI QPL queue format.\n");
 	}
-	if (gve_is_gqi(priv)) {
-		err = gve_set_desc_cnt(priv, descriptor);
-	} else {
-		/* DQO supports LRO. */
+
+	/* set default descriptor counts */
+	gve_set_default_desc_cnt(priv, descriptor);
+
+	gve_set_default_rss_sizes(priv);
+
+	/* DQO supports LRO. */
+	if (!gve_is_gqi(priv))
 		priv->dev->hw_features |= NETIF_F_LRO;
-		err = gve_set_desc_cnt_dqo(priv, descriptor, dev_op_dqo_rda);
-	}
-	if (err)
-		goto free_device_descriptor;
 
 	priv->max_registered_pages =
 				be64_to_cpu(descriptor->max_registered_pages);
@@ -875,17 +1083,12 @@ int gve_adminq_describe_device(struct gve_priv *priv)
 	mac = descriptor->mac;
 	dev_info(&priv->pdev->dev, "MAC addr: %pM\n", mac);
 	priv->tx_pages_per_qpl = be16_to_cpu(descriptor->tx_pages_per_qpl);
-	priv->rx_data_slot_cnt = be16_to_cpu(descriptor->rx_pages_per_qpl);
-
-	if (gve_is_gqi(priv) && priv->rx_data_slot_cnt < priv->rx_desc_cnt) {
-		dev_err(&priv->pdev->dev, "rx_data_slot_cnt cannot be smaller than rx_desc_cnt, setting rx_desc_cnt down to %d.\n",
-			priv->rx_data_slot_cnt);
-		priv->rx_desc_cnt = priv->rx_data_slot_cnt;
-	}
 	priv->default_num_queues = be16_to_cpu(descriptor->default_num_queues);
 
 	gve_enable_supported_features(priv, supported_features_mask,
-				      dev_op_jumbo_frames, dev_op_dqo_qpl);
+				      dev_op_jumbo_frames, dev_op_dqo_qpl,
+				      dev_op_buffer_sizes, dev_op_flow_steering,
+				      dev_op_rss_config, dev_op_modify_ring);
 
 free_device_descriptor:
 	dma_pool_free(priv->adminq_pool, descriptor, descriptor_bus);
@@ -938,20 +1141,6 @@ int gve_adminq_unregister_page_list(struct gve_priv *priv, u32 page_list_id)
 	return gve_adminq_execute_cmd(priv, &cmd);
 }
 
-int gve_adminq_set_mtu(struct gve_priv *priv, u64 mtu)
-{
-	union gve_adminq_command cmd;
-
-	memset(&cmd, 0, sizeof(cmd));
-	cmd.opcode = cpu_to_be32(GVE_ADMINQ_SET_DRIVER_PARAMETER);
-	cmd.set_driver_param = (struct gve_adminq_set_driver_parameter) {
-		.parameter_type = cpu_to_be32(GVE_SET_PARAM_MTU),
-		.parameter_value = cpu_to_be64(mtu),
-	};
-
-	return gve_adminq_execute_cmd(priv, &cmd);
-}
-
 int gve_adminq_report_stats(struct gve_priv *priv, u64 stats_report_len,
 			    dma_addr_t stats_report_addr, u64 interval)
 {
@@ -1048,3 +1237,293 @@ err:
 			  ptype_map_bus);
 	return err;
 }
+
+static int
+gve_adminq_configure_flow_rule(struct gve_priv *priv,
+			       struct gve_adminq_configure_flow_rule *flow_rule_cmd)
+{
+	int err = gve_adminq_execute_extended_cmd(priv,
+			GVE_ADMINQ_CONFIGURE_FLOW_RULE,
+			sizeof(struct gve_adminq_configure_flow_rule),
+			flow_rule_cmd);
+
+	if (err == -ETIME) {
+		dev_err(&priv->pdev->dev, "Timeout to configure the flow rule, trigger reset");
+		gve_reset(priv, true);
+	} else if (!err) {
+		priv->flow_rules_cache.rules_cache_synced = false;
+	}
+
+	return err;
+}
+
+int gve_adminq_add_flow_rule(struct gve_priv *priv, struct gve_adminq_flow_rule *rule, u32 loc)
+{
+	struct gve_adminq_configure_flow_rule flow_rule_cmd = {
+		.opcode = cpu_to_be16(GVE_FLOW_RULE_CFG_ADD),
+		.location = cpu_to_be32(loc),
+		.rule = *rule,
+	};
+
+	return gve_adminq_configure_flow_rule(priv, &flow_rule_cmd);
+}
+
+int gve_adminq_del_flow_rule(struct gve_priv *priv, u32 loc)
+{
+	struct gve_adminq_configure_flow_rule flow_rule_cmd = {
+		.opcode = cpu_to_be16(GVE_FLOW_RULE_CFG_DEL),
+		.location = cpu_to_be32(loc),
+	};
+
+	return gve_adminq_configure_flow_rule(priv, &flow_rule_cmd);
+}
+
+int gve_adminq_reset_flow_rules(struct gve_priv *priv)
+{
+	struct gve_adminq_configure_flow_rule flow_rule_cmd = {
+		.opcode = cpu_to_be16(GVE_FLOW_RULE_CFG_RESET),
+	};
+
+	return gve_adminq_configure_flow_rule(priv, &flow_rule_cmd);
+}
+
+int gve_adminq_configure_rss(struct gve_priv *priv, struct ethtool_rxfh_param *rxfh)
+{
+	const u32 *hash_lut_to_config = NULL;
+	const u8 *hash_key_to_config = NULL;
+	dma_addr_t lut_bus = 0, key_bus = 0;
+	union gve_adminq_command cmd;
+	__be32 *lut = NULL;
+	u8 hash_alg = 0;
+	u8 *key = NULL;
+	int err = 0;
+	u16 i;
+
+	switch (rxfh->hfunc) {
+	case ETH_RSS_HASH_NO_CHANGE:
+		fallthrough;
+	case ETH_RSS_HASH_TOP:
+		hash_alg = ETH_RSS_HASH_TOP;
+		break;
+	default:
+		return -EOPNOTSUPP;
+	}
+
+	if (rxfh->indir) {
+		if (rxfh->indir_size != priv->rss_lut_size)
+			return -EINVAL;
+
+		hash_lut_to_config = rxfh->indir;
+	} else if (priv->cache_rss_config) {
+		hash_lut_to_config = priv->rss_config.hash_lut;
+	}
+
+	if (hash_lut_to_config) {
+		lut = dma_alloc_coherent(&priv->pdev->dev,
+					 priv->rss_lut_size * sizeof(*lut),
+					 &lut_bus, GFP_KERNEL);
+		if (!lut)
+			return -ENOMEM;
+
+		for (i = 0; i < priv->rss_lut_size; i++)
+			lut[i] = cpu_to_be32(hash_lut_to_config[i]);
+	}
+
+	if (rxfh->key) {
+		if (rxfh->key_size != priv->rss_key_size) {
+			err = -EINVAL;
+			goto out;
+		}
+
+		hash_key_to_config = rxfh->key;
+	} else if (priv->cache_rss_config) {
+		hash_key_to_config = priv->rss_config.hash_key;
+	}
+
+	if (hash_key_to_config) {
+		key = dma_alloc_coherent(&priv->pdev->dev,
+					 priv->rss_key_size,
+					 &key_bus, GFP_KERNEL);
+		if (!key) {
+			err = -ENOMEM;
+			goto out;
+		}
+
+		memcpy(key, hash_key_to_config, priv->rss_key_size);
+	}
+
+	/* Zero-valued fields in the cmd.configure_rss instruct the device to
+	 * not update those fields.
+	 */
+	memset(&cmd, 0, sizeof(cmd));
+	cmd.opcode = cpu_to_be32(GVE_ADMINQ_CONFIGURE_RSS);
+	cmd.configure_rss = (struct gve_adminq_configure_rss) {
+		.hash_types = cpu_to_be16(BIT(GVE_RSS_HASH_TCPV4) |
+					  BIT(GVE_RSS_HASH_UDPV4) |
+					  BIT(GVE_RSS_HASH_TCPV6) |
+					  BIT(GVE_RSS_HASH_UDPV6)),
+		.hash_alg = hash_alg,
+		.hash_key_size =
+			cpu_to_be16((key_bus) ? priv->rss_key_size : 0),
+		.hash_lut_size =
+			cpu_to_be16((lut_bus) ? priv->rss_lut_size : 0),
+		.hash_key_addr = cpu_to_be64(key_bus),
+		.hash_lut_addr = cpu_to_be64(lut_bus),
+	};
+
+	err = gve_adminq_execute_cmd(priv, &cmd);
+
+out:
+	if (lut)
+		dma_free_coherent(&priv->pdev->dev,
+				  priv->rss_lut_size * sizeof(*lut),
+				  lut, lut_bus);
+	if (key)
+		dma_free_coherent(&priv->pdev->dev,
+				  priv->rss_key_size, key, key_bus);
+	return err;
+}
+
+/* In the dma memory that the driver allocated for the device to query the flow rules, the device
+ * will first write it with a struct of gve_query_flow_rules_descriptor. Next to it, the device
+ * will write an array of rules or rule ids with the count that specified in the descriptor.
+ * For GVE_FLOW_RULE_QUERY_STATS, the device will only write the descriptor.
+ */
+static int gve_adminq_process_flow_rules_query(struct gve_priv *priv, u16 query_opcode,
+					       struct gve_query_flow_rules_descriptor *descriptor)
+{
+	struct gve_flow_rules_cache *flow_rules_cache = &priv->flow_rules_cache;
+	u32 num_queried_rules, total_memory_len, rule_info_len;
+	void *rule_info;
+
+	total_memory_len = be32_to_cpu(descriptor->total_length);
+	num_queried_rules = be32_to_cpu(descriptor->num_queried_rules);
+	rule_info = (void *)(descriptor + 1);
+
+	switch (query_opcode) {
+	case GVE_FLOW_RULE_QUERY_RULES:
+		rule_info_len = num_queried_rules * sizeof(*flow_rules_cache->rules_cache);
+		if (sizeof(*descriptor) + rule_info_len != total_memory_len) {
+			dev_err(&priv->dev->dev, "flow rules query is out of memory.\n");
+			return -ENOMEM;
+		}
+
+		memcpy(flow_rules_cache->rules_cache, rule_info, rule_info_len);
+		flow_rules_cache->rules_cache_num = num_queried_rules;
+		break;
+	case GVE_FLOW_RULE_QUERY_IDS:
+		rule_info_len = num_queried_rules * sizeof(*flow_rules_cache->rule_ids_cache);
+		if (sizeof(*descriptor) + rule_info_len != total_memory_len) {
+			dev_err(&priv->dev->dev, "flow rule ids query is out of memory.\n");
+			return -ENOMEM;
+		}
+
+		memcpy(flow_rules_cache->rule_ids_cache, rule_info, rule_info_len);
+		flow_rules_cache->rule_ids_cache_num = num_queried_rules;
+		break;
+	case GVE_FLOW_RULE_QUERY_STATS:
+		priv->num_flow_rules = be32_to_cpu(descriptor->num_flow_rules);
+		priv->max_flow_rules = be32_to_cpu(descriptor->max_flow_rules);
+		return 0;
+	default:
+		return -EINVAL;
+	}
+
+	return  0;
+}
+
+int gve_adminq_query_flow_rules(struct gve_priv *priv, u16 query_opcode, u32 starting_loc)
+{
+	struct gve_query_flow_rules_descriptor *descriptor;
+	union gve_adminq_command cmd;
+	dma_addr_t descriptor_bus;
+	int err = 0;
+
+	memset(&cmd, 0, sizeof(cmd));
+	descriptor = dma_pool_alloc(priv->adminq_pool, GFP_KERNEL, &descriptor_bus);
+	if (!descriptor)
+		return -ENOMEM;
+
+	cmd.opcode = cpu_to_be32(GVE_ADMINQ_QUERY_FLOW_RULES);
+	cmd.query_flow_rules = (struct gve_adminq_query_flow_rules) {
+		.opcode = cpu_to_be16(query_opcode),
+		.starting_rule_id = cpu_to_be32(starting_loc),
+		.available_length = cpu_to_be64(GVE_ADMINQ_BUFFER_SIZE),
+		.rule_descriptor_addr = cpu_to_be64(descriptor_bus),
+	};
+	err = gve_adminq_execute_cmd(priv, &cmd);
+	if (err)
+		goto out;
+
+	err = gve_adminq_process_flow_rules_query(priv, query_opcode, descriptor);
+
+out:
+	dma_pool_free(priv->adminq_pool, descriptor, descriptor_bus);
+	return err;
+}
+
+static int gve_adminq_process_rss_query(struct gve_priv *priv,
+					struct gve_query_rss_descriptor *descriptor,
+					struct ethtool_rxfh_param *rxfh)
+{
+	u32 total_memory_length;
+	u16 hash_lut_length;
+	void *rss_info_addr;
+	__be32 *lut;
+	u16 i;
+
+	total_memory_length = be32_to_cpu(descriptor->total_length);
+	hash_lut_length = priv->rss_lut_size * sizeof(*rxfh->indir);
+
+	if (sizeof(*descriptor) + priv->rss_key_size + hash_lut_length != total_memory_length) {
+		dev_err(&priv->dev->dev,
+			"rss query desc from device has invalid length parameter.\n");
+		return -EINVAL;
+	}
+
+	rxfh->hfunc = descriptor->hash_alg;
+
+	rss_info_addr = (void *)(descriptor + 1);
+	if (rxfh->key) {
+		rxfh->key_size = priv->rss_key_size;
+		memcpy(rxfh->key, rss_info_addr, priv->rss_key_size);
+	}
+
+	rss_info_addr += priv->rss_key_size;
+	lut = (__be32 *)rss_info_addr;
+	if (rxfh->indir) {
+		rxfh->indir_size = priv->rss_lut_size;
+		for (i = 0; i < priv->rss_lut_size; i++)
+			rxfh->indir[i] = be32_to_cpu(lut[i]);
+	}
+
+	return 0;
+}
+
+int gve_adminq_query_rss_config(struct gve_priv *priv, struct ethtool_rxfh_param *rxfh)
+{
+	struct gve_query_rss_descriptor *descriptor;
+	union gve_adminq_command cmd;
+	dma_addr_t descriptor_bus;
+	int err = 0;
+
+	descriptor = dma_pool_alloc(priv->adminq_pool, GFP_KERNEL, &descriptor_bus);
+	if (!descriptor)
+		return -ENOMEM;
+
+	memset(&cmd, 0, sizeof(cmd));
+	cmd.opcode = cpu_to_be32(GVE_ADMINQ_QUERY_RSS);
+	cmd.query_rss = (struct gve_adminq_query_rss) {
+		.available_length = cpu_to_be64(GVE_ADMINQ_BUFFER_SIZE),
+		.rss_descriptor_addr = cpu_to_be64(descriptor_bus),
+	};
+	err = gve_adminq_execute_cmd(priv, &cmd);
+	if (err)
+		goto out;
+
+	err = gve_adminq_process_rss_query(priv, descriptor, rxfh);
+
+out:
+	dma_pool_free(priv->adminq_pool, descriptor, descriptor_bus);
+	return err;
+}