| 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 |