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