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