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