1/* SPDX-License-Identifier: GPL-2.0-or-later */
 2/*
 3 * Dmabuf device memory provider.
 4 *
 5 * Authors:	Mina Almasry <almasrymina@google.com>
 6 *
 7 */
 8#ifndef _NET_MP_DMABUF_DEVMEM_H
 9#define _NET_MP_DMABUF_DEVMEM_H
10
11#include <net/netmem.h>
12
13#if defined(CONFIG_NET_DEVMEM)
14int mp_dmabuf_devmem_init(struct page_pool *pool);
15
16netmem_ref mp_dmabuf_devmem_alloc_netmems(struct page_pool *pool, gfp_t gfp);
17
18void mp_dmabuf_devmem_destroy(struct page_pool *pool);
19
20bool mp_dmabuf_devmem_release_page(struct page_pool *pool, netmem_ref netmem);
21#else
22static inline int mp_dmabuf_devmem_init(struct page_pool *pool)
23{
24	return -EOPNOTSUPP;
25}
26
27static inline netmem_ref
28mp_dmabuf_devmem_alloc_netmems(struct page_pool *pool, gfp_t gfp)
29{
30	return 0;
31}
32
33static inline void mp_dmabuf_devmem_destroy(struct page_pool *pool)
34{
35}
36
37static inline bool
38mp_dmabuf_devmem_release_page(struct page_pool *pool, netmem_ref netmem)
39{
40	return false;
41}
42#endif
43
44#endif /* _NET_MP_DMABUF_DEVMEM_H */