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 #include <net/rps-types.h> 12 13 /* This structure contains an instance of an RX queue. */ 14 struct netdev_rx_queue { 15 struct xdp_rxq_info xdp_rxq; 16 #ifdef CONFIG_RPS 17 struct rps_map __rcu *rps_map; 18 rps_tag_ptr rps_flow_table; 19 #endif 20 struct kobject kobj; 21 const struct attribute_group **groups; 22 struct net_device *dev; 23 netdevice_tracker dev_tracker; 24 25 /* All fields below are "ops protected", 26 * see comment about net_device::lock 27 */ 28 #ifdef CONFIG_XDP_SOCKETS 29 struct xsk_buff_pool *pool; 30 #endif 31 struct napi_struct *napi; 32 struct netdev_queue_config qcfg; 33 struct pp_memory_provider_params mp_params; 34 } ____cacheline_aligned_in_smp; 35 36 /* 37 * RX queue sysfs structures and functions. 38 */ 39 struct rx_queue_attribute { 40 struct attribute attr; 41 ssize_t (*show)(struct netdev_rx_queue *queue, char *buf); 42 ssize_t (*store)(struct netdev_rx_queue *queue, 43 const char *buf, size_t len); 44 }; 45 46 static inline struct netdev_rx_queue * 47 __netif_get_rx_queue(struct net_device *dev, unsigned int rxq) 48 { 49 return dev->_rx + rxq; 50 } 51 52 static inline unsigned int 53 get_netdev_rx_queue_index(struct netdev_rx_queue *queue) 54 { 55 struct net_device *dev = queue->dev; 56 int index = queue - dev->_rx; 57 58 BUG_ON(index >= dev->num_rx_queues); 59 return index; 60 } 61 62 int netdev_rx_queue_restart(struct net_device *dev, unsigned int rxq); 63 64 #endif 65