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