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 #include <net/netdev_queues.h> 11 12 /* This structure contains an instance of an RX queue. */ 13 struct netdev_rx_queue { 14 struct xdp_rxq_info xdp_rxq; 15 #ifdef CONFIG_RPS 16 struct rps_map __rcu *rps_map; 17 struct rps_dev_flow_table __rcu *rps_flow_table; 18 #endif 19 struct kobject kobj; 20 const struct attribute_group **groups; 21 struct net_device *dev; 22 netdevice_tracker dev_tracker; 23 24 /* All fields below are "ops protected", 25 * see comment about net_device::lock 26 */ 27 #ifdef CONFIG_XDP_SOCKETS 28 struct xsk_buff_pool *pool; 29 #endif 30 struct napi_struct *napi; 31 struct netdev_queue_config qcfg; 32 struct pp_memory_provider_params mp_params; 33 } ____cacheline_aligned_in_smp; 34 35 /* 36 * RX queue sysfs structures and functions. 37 */ 38 struct rx_queue_attribute { 39 struct attribute attr; 40 ssize_t (*show)(struct netdev_rx_queue *queue, char *buf); 41 ssize_t (*store)(struct netdev_rx_queue *queue, 42 const char *buf, size_t len); 43 }; 44 45 static inline struct netdev_rx_queue * 46 __netif_get_rx_queue(struct net_device *dev, unsigned int rxq) 47 { 48 return dev->_rx + rxq; 49 } 50 51 static inline unsigned int 52 get_netdev_rx_queue_index(struct netdev_rx_queue *queue) 53 { 54 struct net_device *dev = queue->dev; 55 int index = queue - dev->_rx; 56 57 BUG_ON(index >= dev->num_rx_queues); 58 return index; 59 } 60 61 int netdev_rx_queue_restart(struct net_device *dev, unsigned int rxq); 62 63 #endif 64