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
10/* This structure contains an instance of an RX queue. */
11struct netdev_rx_queue {
12	struct xdp_rxq_info		xdp_rxq;
13#ifdef CONFIG_RPS
14	struct rps_map __rcu		*rps_map;
15	struct rps_dev_flow_table __rcu	*rps_flow_table;
16#endif
17	struct kobject			kobj;
18	struct net_device		*dev;
19	netdevice_tracker		dev_tracker;
20
21#ifdef CONFIG_XDP_SOCKETS
22	struct xsk_buff_pool            *pool;
23#endif
24} ____cacheline_aligned_in_smp;
25
26/*
27 * RX queue sysfs structures and functions.
28 */
29struct rx_queue_attribute {
30	struct attribute attr;
31	ssize_t (*show)(struct netdev_rx_queue *queue, char *buf);
32	ssize_t (*store)(struct netdev_rx_queue *queue,
33			 const char *buf, size_t len);
34};
35
36static inline struct netdev_rx_queue *
37__netif_get_rx_queue(struct net_device *dev, unsigned int rxq)
38{
39	return dev->_rx + rxq;
40}
41
42#ifdef CONFIG_SYSFS
43static inline unsigned int
44get_netdev_rx_queue_index(struct netdev_rx_queue *queue)
45{
46	struct net_device *dev = queue->dev;
47	int index = queue - dev->_rx;
48
49	BUG_ON(index >= dev->num_rx_queues);
50	return index;
51}
52#endif
53#endif
54