diff options
Diffstat (limited to 'include/net/xsk_buff_pool.h')
-rw-r--r-- | include/net/xsk_buff_pool.h | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/include/net/xsk_buff_pool.h b/include/net/xsk_buff_pool.h new file mode 100644 index 000000000000..9f221b36e405 --- /dev/null +++ b/include/net/xsk_buff_pool.h @@ -0,0 +1,56 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* Copyright(c) 2020 Intel Corporation. */ + +#ifndef XSK_BUFF_POOL_H_ +#define XSK_BUFF_POOL_H_ + +#include <linux/types.h> +#include <linux/dma-mapping.h> +#include <net/xdp.h> + +struct xsk_buff_pool; +struct xdp_rxq_info; +struct xsk_queue; +struct xdp_desc; +struct device; +struct page; + +struct xdp_buff_xsk { + struct xdp_buff xdp; + dma_addr_t dma; + dma_addr_t frame_dma; + struct xsk_buff_pool *pool; + bool unaligned; + u64 orig_addr; + struct list_head free_list_node; +}; + +/* AF_XDP core. */ +struct xsk_buff_pool *xp_create(struct page **pages, u32 nr_pages, u32 chunks, + u32 chunk_size, u32 headroom, u64 size, + bool unaligned); +void xp_set_fq(struct xsk_buff_pool *pool, struct xsk_queue *fq); +void xp_destroy(struct xsk_buff_pool *pool); +void xp_release(struct xdp_buff_xsk *xskb); +u64 xp_get_handle(struct xdp_buff_xsk *xskb); +bool xp_validate_desc(struct xsk_buff_pool *pool, struct xdp_desc *desc); + +/* AF_XDP, and XDP core. */ +void xp_free(struct xdp_buff_xsk *xskb); + +/* AF_XDP ZC drivers, via xdp_sock_buff.h */ +void xp_set_rxq_info(struct xsk_buff_pool *pool, struct xdp_rxq_info *rxq); +int xp_dma_map(struct xsk_buff_pool *pool, struct device *dev, + unsigned long attrs, struct page **pages, u32 nr_pages); +void xp_dma_unmap(struct xsk_buff_pool *pool, unsigned long attrs); +struct xdp_buff *xp_alloc(struct xsk_buff_pool *pool); +bool xp_can_alloc(struct xsk_buff_pool *pool, u32 count); +void *xp_raw_get_data(struct xsk_buff_pool *pool, u64 addr); +dma_addr_t xp_raw_get_dma(struct xsk_buff_pool *pool, u64 addr); +dma_addr_t xp_get_dma(struct xdp_buff_xsk *xskb); +dma_addr_t xp_get_frame_dma(struct xdp_buff_xsk *xskb); +void xp_dma_sync_for_cpu(struct xdp_buff_xsk *xskb); +void xp_dma_sync_for_device(struct xsk_buff_pool *pool, dma_addr_t dma, + size_t size); + +#endif /* XSK_BUFF_POOL_H_ */ |