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 } ____cacheline_aligned_in_smp; 25 26 /* 27 * RX queue sysfs structures and functions. 28 */ 29 struct 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 36 static 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 43 static inline unsigned int 44 get_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