| 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 | /* All fields below are "ops protected", |
| 24 | * see comment about net_device::lock |
| 25 | */ |
| 26 | #ifdef CONFIG_XDP_SOCKETS |
| 27 | struct xsk_buff_pool *pool; |
| 28 | #endif |
| 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 * |
| 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 |
| 50 | get_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 |