/*
 * Copyright (c) 2023-2025 Bjoern A. Zeeb
 * Copyright (c) 2025-2026 The FreeBSD Foundation
 *
 * Portions of this software were developed by Björn Zeeb
 * under sponsorship from the FreeBSD Foundation.
 *
 * SPDX-License-Identifier: BSD-2-Clause
 */

#ifndef _LINUXKPI_NET_PAGE_POOL_TYPES_H
#define _LINUXKPI_NET_PAGE_POOL_TYPES_H

#include <linux/types.h>
#include <linux/dma-mapping.h>
#include <net/netmem.h>

struct device;
struct napi_struct;

struct page_pool_params {
        struct device                   *dev;
        uint32_t                        flags;
        uint32_t                        order;
        uint32_t                        pool_size;
        uint32_t                        max_len;
        uint32_t                        offset;
        int                             nid;            /* NUMA */
        enum dma_data_direction         dma_dir;
        struct napi_struct              *napi;
};

struct page_pool {
        struct page_pool_params         params;
};

#define PP_FLAG_DMA_MAP         BIT(0)
#define PP_FLAG_DMA_SYNC_DEV    BIT(1)
#define PP_FLAG_PAGE_FRAG       BIT(2)
#define PP_FLAGS_ALL            (PP_FLAG_DMA_MAP | PP_FLAG_DMA_SYNC_DEV | \
    PP_FLAG_PAGE_FRAG)

struct page *linuxkpi_page_pool_alloc_frag(struct page_pool *, uint32_t *,
    size_t, gfp_t);

static inline struct page *
page_pool_alloc_frag(struct page_pool *pp, uint32_t *offset,
    size_t size, gfp_t gfp)
{
        return (linuxkpi_page_pool_alloc_frag(pp, offset, size, gfp));
}

#endif  /* _LINUXKPI_NET_PAGE_POOL_TYPES_H */