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. */
11 struct 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 /* NAPI instance for the queue
25 * Readers and writers must hold RTNL
26 */
27 struct napi_struct *napi;
28 } ____cacheline_aligned_in_smp;
29
30 /*
31 * RX queue sysfs structures and functions.
32 */
33 struct rx_queue_attribute {
34 struct attribute attr;
35 ssize_t (*show)(struct netdev_rx_queue *queue, char *buf);
36 ssize_t (*store)(struct netdev_rx_queue *queue,
37 const char *buf, size_t len);
38 };
39
40 static inline struct netdev_rx_queue *
41 __netif_get_rx_queue(struct net_device *dev, unsigned int rxq)
42 {
43 return dev->_rx + rxq;
44 }
45
46 #ifdef CONFIG_SYSFS
47 static inline unsigned int
48 get_netdev_rx_queue_index(struct netdev_rx_queue *queue)
49 {
50 struct net_device *dev = queue->dev;
51 int index = queue - dev->_rx;
52
53 BUG_ON(index >= dev->num_rx_queues);
54 return index;
55 }
56 #endif
57 #endif
58
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