1/* SPDX-License-Identifier: GPL-2.0 */
 2#ifndef _LINUX_NETDEV_RX_QUEUE_H
 3#define _LINUX_NETDEV_RX_QUEUE_H
 4
 5#include <linux/kobject.h>
 6#include <linux/netdevice.h>
 7#include <linux/sysfs.h>
 8#include <net/xdp.h>
 9#include <net/page_pool/types.h>
10
11/* This structure contains an instance of an RX queue. */
12struct netdev_rx_queue {
13	struct xdp_rxq_info		xdp_rxq;
14#ifdef CONFIG_RPS
15	struct rps_map __rcu		*rps_map;
16	struct rps_dev_flow_table __rcu	*rps_flow_table;
17#endif
18	struct kobject			kobj;
19	struct net_device		*dev;
20	netdevice_tracker		dev_tracker;
21
22#ifdef CONFIG_XDP_SOCKETS
23	struct xsk_buff_pool            *pool;
24#endif
25	/* NAPI instance for the queue
26	 * Readers and writers must hold RTNL
27	 */
28	struct napi_struct		*napi;
29	struct pp_memory_provider_params mp_params;
30} ____cacheline_aligned_in_smp;
31
32/*
33 * RX queue sysfs structures and functions.
34 */
35struct rx_queue_attribute {
36	struct attribute attr;
37	ssize_t (*show)(struct netdev_rx_queue *queue, char *buf);
38	ssize_t (*store)(struct netdev_rx_queue *queue,
39			 const char *buf, size_t len);
40};
41
42static inline struct netdev_rx_queue *
43__netif_get_rx_queue(struct net_device *dev, unsigned int rxq)
44{
45	return dev->_rx + rxq;
46}
47
48static inline unsigned int
49get_netdev_rx_queue_index(struct netdev_rx_queue *queue)
50{
51	struct net_device *dev = queue->dev;
52	int index = queue - dev->_rx;
53
54	BUG_ON(index >= dev->num_rx_queues);
55	return index;
56}
57
58int netdev_rx_queue_restart(struct net_device *dev, unsigned int rxq);
59
60#endif