Warning: This file is not a C or C++ file. It does not have highlighting.
| 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
|---|---|
| 2 | #ifndef _NET_PAGE_POOL_MEMORY_PROVIDER_H |
| 3 | #define _NET_PAGE_POOL_MEMORY_PROVIDER_H |
| 4 | |
| 5 | #include <net/netmem.h> |
| 6 | #include <net/page_pool/types.h> |
| 7 | |
| 8 | struct netdev_rx_queue; |
| 9 | struct netlink_ext_ack; |
| 10 | struct sk_buff; |
| 11 | |
| 12 | struct memory_provider_ops { |
| 13 | netmem_ref (*alloc_netmems)(struct page_pool *pool, gfp_t gfp); |
| 14 | bool (*release_netmem)(struct page_pool *pool, netmem_ref netmem); |
| 15 | int (*init)(struct page_pool *pool); |
| 16 | void (*destroy)(struct page_pool *pool); |
| 17 | int (*nl_fill)(void *mp_priv, struct sk_buff *rsp, |
| 18 | struct netdev_rx_queue *rxq); |
| 19 | void (*uninstall)(void *mp_priv, struct netdev_rx_queue *rxq); |
| 20 | }; |
| 21 | |
| 22 | bool net_mp_niov_set_dma_addr(struct net_iov *niov, dma_addr_t addr); |
| 23 | void net_mp_niov_set_page_pool(struct page_pool *pool, struct net_iov *niov); |
| 24 | void net_mp_niov_clear_page_pool(struct net_iov *niov); |
| 25 | |
| 26 | int net_mp_open_rxq(struct net_device *dev, unsigned ifq_idx, |
| 27 | struct pp_memory_provider_params *p); |
| 28 | int __net_mp_open_rxq(struct net_device *dev, unsigned int rxq_idx, |
| 29 | const struct pp_memory_provider_params *p, |
| 30 | struct netlink_ext_ack *extack); |
| 31 | void net_mp_close_rxq(struct net_device *dev, unsigned ifq_idx, |
| 32 | struct pp_memory_provider_params *old_p); |
| 33 | void __net_mp_close_rxq(struct net_device *dev, unsigned int rxq_idx, |
| 34 | const struct pp_memory_provider_params *old_p); |
| 35 | |
| 36 | /** |
| 37 | * net_mp_netmem_place_in_cache() - give a netmem to a page pool |
| 38 | * @pool: the page pool to place the netmem into |
| 39 | * @netmem: netmem to give |
| 40 | * |
| 41 | * Push an accounted netmem into the page pool's allocation cache. The caller |
| 42 | * must ensure that there is space in the cache. It should only be called off |
| 43 | * the mp_ops->alloc_netmems() path. |
| 44 | */ |
| 45 | static inline void net_mp_netmem_place_in_cache(struct page_pool *pool, |
| 46 | netmem_ref netmem) |
| 47 | { |
| 48 | pool->alloc.cache[pool->alloc.count++] = netmem; |
| 49 | } |
| 50 | |
| 51 | #endif |
| 52 |
Warning: This file is not a C or C++ file. It does not have highlighting.