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(I'm so sorry!) Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel os linux
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148// 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"
int netdev_alloc_config(struct net_device *dev){ struct netdev_config *cfg;
cfg = kzalloc_obj(*dev->cfg, GFP_KERNEL_ACCOUNT); if (!cfg) return -ENOMEM;
dev->cfg = cfg; dev->cfg_pending = cfg; return 0;}
void __netdev_free_config(struct netdev_config *cfg){ kfree(cfg);}
void netdev_free_config(struct net_device *dev){ WARN_ON(dev->cfg != dev->cfg_pending); __netdev_free_config(dev->cfg);}
int netdev_reconfig_start(struct net_device *dev){ struct netdev_config *cfg;
WARN_ON(dev->cfg != dev->cfg_pending); cfg = kmemdup(dev->cfg, sizeof(*dev->cfg), GFP_KERNEL_ACCOUNT); if (!cfg) return -ENOMEM;
dev->cfg_pending = cfg; return 0;}
static int netdev_nop_validate_qcfg(struct net_device *dev, struct netdev_queue_config *qcfg, struct netlink_ext_ack *extack){ return 0;}
static void netdev_qcfg_apply_dev(struct netdev_queue_config *qcfg, const struct netdev_config *cfg){ /* Device config overrides callback-provided fallbacks. */ qcfg->rx_ring_size = cfg->rings.rx_pending; qcfg->rx_mini_ring_size = cfg->rings.rx_mini_pending; qcfg->rx_jumbo_ring_size = cfg->rings.rx_jumbo_pending;}
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); netdev_qcfg_apply_dev(qcfg, dev->cfg_pending); 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. During a configuration * transaction this includes the proposed device-wide values in * @dev->cfg_pending; otherwise @dev->cfg_pending points to the accepted * configuration. 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);}
int netdev_queue_config_revalidate(struct net_device *dev, struct netlink_ext_ack *extack){ const struct netdev_queue_mgmt_ops *qops = dev->queue_mgmt_ops; struct netdev_queue_config qcfg; unsigned int i; int err;
if (!qops || !qops->ndo_validate_qcfg) return 0;
for (i = 0; i < dev->real_num_rx_queues; i++) { err = netdev_queue_config_validate(dev, i, &qcfg, extack); if (err) return err; }
return 0;}