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 10/* This structure contains an instance of an RX queue. */ 11struct netdev_rx_queue { 12 struct xdp_rxq_info xdp_rxq; 13#ifdef CONFIG_RPS 14 struct rps_map __rcu *rps_map; 15 struct rps_dev_flow_table __rcu *rps_flow_table; 16#endif 17 struct kobject kobj; 18 struct net_device *dev; 19 netdevice_tracker dev_tracker; 20 21#ifdef CONFIG_XDP_SOCKETS 22 struct xsk_buff_pool *pool; 23#endif 24 /* NAPI instance for the queue 25 * Readers and writers must hold RTNL 26 */ 27 struct napi_struct *napi; 28} ____cacheline_aligned_in_smp; 29 30/* 31 * RX queue sysfs structures and functions. 32 */ 33struct rx_queue_attribute { 34 struct attribute attr; 35 ssize_t (*show)(struct netdev_rx_queue *queue, char *buf); 36 ssize_t (*store)(struct netdev_rx_queue *queue, 37 const char *buf, size_t len); 38}; 39 40static inline struct netdev_rx_queue * 41__netif_get_rx_queue(struct net_device *dev, unsigned int rxq) 42{ 43 return dev->_rx + rxq; 44} 45 46#ifdef CONFIG_SYSFS 47static inline unsigned int 48get_netdev_rx_queue_index(struct netdev_rx_queue *queue) 49{ 50 struct net_device *dev = queue->dev; 51 int index = queue - dev->_rx; 52 53 BUG_ON(index >= dev->num_rx_queues); 54 return index; 55} 56#endif 57#endif 58