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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 */