include/net/netdev_queues.h

1 /* SPDX-License-Identifier: GPL-2.0 */
8  * struct netdev_config - queue-related configuration for a netdev
61  * struct netdev_stat_ops - netdev ops for fine grained stats
67  * on entry (specifically they are *not* zero-initialized). Drivers should
72  * queues are queried by the per-queue callbacks. This means that per-queue
73  * statistics will not generally add up to the total number of events for
79  * is issued to collect the delta, and then a series of per-queue callbacks.
89  * the @get_base_stats and subsequent per-queue calls are performed
92  * Device drivers are encouraged to reset the per-queue statistics when
94  * per-queue statistics is currently to detect traffic imbalance.
113  * struct netdev_queue_mgmt_ops - netdev ops for queue management
148  * DOC: Lockless queue stopping / waking helpers.
152  * and waking netdev queues without full lock protection.
155  * wake attempts. The try-stop should happen from the xmit handler,
156  * while wake up should be triggered from NAPI poll context.
159  * The try-stop side is expected to run from the xmit handler and therefore
163  * The waking side does not have similar context restrictions.
191 			_res = -1;					\
197  * netif_txq_maybe_stop() - locklessly stop a Tx queue, if needed
202  * @start_thrs:	minimal number of descriptors to re-enable the queue, can be
203  *		equal to @stop_thrs or higher to avoid frequent waking
207  * return up-to-date information when evaluated!
213  *	-1 if the queue was re-enabled (raced with waking)
239  * __netif_txq_completed_wake() - locklessly wake a Tx queue, if needed
244  * @start_thrs:	minimal number of descriptors to re-enable the queue
246  *		not be woken up even if descriptors are available
250  * return up-to-date information when evaluated!
254  *	 0 if the queue was woken up
256  *	-1 if the queue was left unchanged (@start_thrs not reached)
270 		_res = -1;						\