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 <linux/android_kabi.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 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 * Readers and writers must hold RTNL 28 */ 29 struct napi_struct *napi; 30 struct pp_memory_provider_params mp_params; 31 ANDROID_KABI_RESERVE(1); 32 ANDROID_KABI_RESERVE(2); 33 ANDROID_KABI_RESERVE(3); 34 ANDROID_KABI_RESERVE(4); 35 } ____cacheline_aligned_in_smp; 36 37 /* 38 * RX queue sysfs structures and functions. 39 */ 40 struct rx_queue_attribute { 41 struct attribute attr; 42 ssize_t (*show)(struct netdev_rx_queue *queue, char *buf); 43 ssize_t (*store)(struct netdev_rx_queue *queue, 44 const char *buf, size_t len); 45 }; 46 47 static inline struct netdev_rx_queue * __netif_get_rx_queue(struct net_device * dev,unsigned int rxq)48__netif_get_rx_queue(struct net_device *dev, unsigned int rxq) 49 { 50 return dev->_rx + rxq; 51 } 52 53 static inline unsigned int get_netdev_rx_queue_index(struct netdev_rx_queue * queue)54get_netdev_rx_queue_index(struct netdev_rx_queue *queue) 55 { 56 struct net_device *dev = queue->dev; 57 int index = queue - dev->_rx; 58 59 BUG_ON(index >= dev->num_rx_queues); 60 return index; 61 } 62 63 int netdev_rx_queue_restart(struct net_device *dev, unsigned int rxq); 64 65 #endif 66