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. */ 12 struct 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 struct net_device *dev; 20 netdevice_tracker dev_tracker; 21 22 #ifdef CONFIG_XDP_SOCKETS 23 struct xsk_buff_pool *pool; 24 #endif 25 /* NAPI instance for the queue 26 * Readers and writers must hold RTNL 27 */ 28 struct napi_struct *napi; 29 struct pp_memory_provider_params mp_params; 30 } ____cacheline_aligned_in_smp; 31 32 /* 33 * RX queue sysfs structures and functions. 34 */ 35 struct rx_queue_attribute { 36 struct attribute attr; 37 ssize_t (*show)(struct netdev_rx_queue *queue, char *buf); 38 ssize_t (*store)(struct netdev_rx_queue *queue, 39 const char *buf, size_t len); 40 }; 41 42 static inline struct netdev_rx_queue * __netif_get_rx_queue(struct net_device * dev,unsigned int rxq)43__netif_get_rx_queue(struct net_device *dev, unsigned int rxq) 44 { 45 return dev->_rx + rxq; 46 } 47 48 static inline unsigned int get_netdev_rx_queue_index(struct netdev_rx_queue * queue)49get_netdev_rx_queue_index(struct netdev_rx_queue *queue) 50 { 51 struct net_device *dev = queue->dev; 52 int index = queue - dev->_rx; 53 54 BUG_ON(index >= dev->num_rx_queues); 55 return index; 56 } 57 58 int netdev_rx_queue_restart(struct net_device *dev, unsigned int rxq); 59 60 #endif 61