// SPDX-License-Identifier: GPL-2.0-only #include <linux/netdevice.h>#include <net/netdev_queues.h>#include <net/netdev_rx_queue.h> #include "dev.h" static int netdev_nop_validate_qcfg(struct net_device *dev,				    struct netdev_queue_config *qcfg,				    struct netlink_ext_ack *extack){	return 0;} static int __netdev_queue_config(struct net_device *dev, int rxq_idx,				 struct netdev_queue_config *qcfg,				 struct netlink_ext_ack *extack,				 bool validate){	int (*validate_cb)(struct net_device *dev,			   struct netdev_queue_config *qcfg,			   struct netlink_ext_ack *extack);	struct pp_memory_provider_params *mpp;	int err; 	validate_cb = netdev_nop_validate_qcfg;	if (validate && dev->queue_mgmt_ops->ndo_validate_qcfg)		validate_cb = dev->queue_mgmt_ops->ndo_validate_qcfg; 	memset(qcfg, 0, sizeof(*qcfg)); 	/* Get defaults from the driver, in case user config not set */	if (dev->queue_mgmt_ops->ndo_default_qcfg)		dev->queue_mgmt_ops->ndo_default_qcfg(dev, qcfg);	err = validate_cb(dev, qcfg, extack);	if (err)		return err; 	/* Apply MP overrides */	mpp = &__netif_get_rx_queue(dev, rxq_idx)->mp_params;	if (mpp->rx_page_size)		qcfg->rx_page_size = mpp->rx_page_size;	err = validate_cb(dev, qcfg, extack);	if (err)		return err; 	return 0;} /** * netdev_queue_config() - get configuration for a given queue * @dev:      net_device instance * @rxq_idx:  index of the queue of interest * @qcfg: queue configuration struct (output) * * Render the configuration for a given queue. This helper should be used * by drivers which support queue configuration to retrieve config for * a particular queue. * * @qcfg is an output parameter and is always fully initialized by this * function. Some values may not be set by the user, drivers may either * deal with the "unset" values in @qcfg, or provide the callback * to populate defaults in queue_management_ops. */void netdev_queue_config(struct net_device *dev, int rxq_idx,			 struct netdev_queue_config *qcfg){	__netdev_queue_config(dev, rxq_idx, qcfg, NULL, false);}EXPORT_SYMBOL(netdev_queue_config); int netdev_queue_config_validate(struct net_device *dev, int rxq_idx,				 struct netdev_queue_config *qcfg,				 struct netlink_ext_ack *extack){	return __netdev_queue_config(dev, rxq_idx, qcfg, extack, true);}