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 const struct attribute_group **groups; 20 struct net_device *dev; 21 netdevice_tracker dev_tracker; 22 23 #ifdef CONFIG_XDP_SOCKETS 24 struct xsk_buff_pool *pool; 25 #endif 26 /* NAPI instance for the queue 27 * "ops protected", see comment about net_device::lock 28 */ 29 struct napi_struct *napi; 30 struct pp_memory_provider_params mp_params; 31 } ____cacheline_aligned_in_smp; 32 33 /* 34 * RX queue sysfs structures and functions. 35 */ 36 struct rx_queue_attribute { 37 struct attribute attr; 38 ssize_t (*show)(struct netdev_rx_queue *queue, char *buf); 39 ssize_t (*store)(struct netdev_rx_queue *queue, 40 const char *buf, size_t len); 41 }; 42 43 static inline struct netdev_rx_queue * __netif_get_rx_queue(struct net_device * dev,unsigned int rxq)44__netif_get_rx_queue(struct net_device *dev, unsigned int rxq) 45 { 46 return dev->_rx + rxq; 47 } 48 49 static inline unsigned int get_netdev_rx_queue_index(struct netdev_rx_queue * queue)50get_netdev_rx_queue_index(struct netdev_rx_queue *queue) 51 { 52 struct net_device *dev = queue->dev; 53 int index = queue - dev->_rx; 54 55 BUG_ON(index >= dev->num_rx_queues); 56 return index; 57 } 58 59 int netdev_rx_queue_restart(struct net_device *dev, unsigned int rxq); 60 61 #endif 62