netdev_rx_queue.h

 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	const struct attribute_group	**groups;
20	struct net_device		*dev;
21	netdevice_tracker		dev_tracker;
22
23	/* All fields below are "ops protected",
24	 * see comment about net_device::lock
25	 */
26#ifdef CONFIG_XDP_SOCKETS
27	struct xsk_buff_pool            *pool;
28#endif
29	struct napi_struct		*napi;
30	struct pp_memory_provider_params mp_params;
31} ____cacheline_aligned_in_smp;
32
33/*
34 * RX queue sysfs structures and functions.
35 */
36struct rx_queue_attribute {
37	struct attribute attr;
38	ssize_t (*show)(struct netdev_rx_queue *queue, char *buf);
39	ssize_t (*store)(struct netdev_rx_queue *queue,
40			 const char *buf, size_t len);
41};
42
43static inline struct netdev_rx_queue *
44__netif_get_rx_queue(struct net_device *dev, unsigned int rxq)
45{
46	return dev->_rx + rxq;
47}
48
49static inline unsigned int
50get_netdev_rx_queue_index(struct netdev_rx_queue *queue)
51{
52	struct net_device *dev = queue->dev;
53	int index = queue - dev->_rx;
54
55	BUG_ON(index >= dev->num_rx_queues);
56	return index;
57}
58
59int netdev_rx_queue_restart(struct net_device *dev, unsigned int rxq);
60
61#endif