diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/net/page_pool.h | 24 |
1 files changed, 18 insertions, 6 deletions
diff --git a/include/net/page_pool.h b/include/net/page_pool.h index e2e1b7b1e8ba..cfbed00ba7ee 100644 --- a/include/net/page_pool.h +++ b/include/net/page_pool.h @@ -34,8 +34,18 @@ #include <linux/ptr_ring.h> #include <linux/dma-direction.h> -#define PP_FLAG_DMA_MAP 1 /* Should page_pool do the DMA map/unmap */ -#define PP_FLAG_ALL PP_FLAG_DMA_MAP +#define PP_FLAG_DMA_MAP BIT(0) /* Should page_pool do the DMA + * map/unmap + */ +#define PP_FLAG_DMA_SYNC_DEV BIT(1) /* If set all pages that the driver gets + * from page_pool will be + * DMA-synced-for-device according to + * the length provided by the device + * driver. + * Please note DMA-sync-for-CPU is still + * device driver responsibility + */ +#define PP_FLAG_ALL (PP_FLAG_DMA_MAP | PP_FLAG_DMA_SYNC_DEV) /* * Fast allocation side cache array/stack @@ -65,6 +75,8 @@ struct page_pool_params { int nid; /* Numa node id to allocate from pages from */ struct device *dev; /* device, for DMA pre-mapping purposes */ enum dma_data_direction dma_dir; /* DMA mapping direction */ + unsigned int max_len; /* max DMA sync memory size */ + unsigned int offset; /* DMA addr offset */ }; struct page_pool { @@ -151,8 +163,8 @@ static inline void page_pool_use_xdp_mem(struct page_pool *pool, #endif /* Never call this directly, use helpers below */ -void __page_pool_put_page(struct page_pool *pool, - struct page *page, bool allow_direct); +void __page_pool_put_page(struct page_pool *pool, struct page *page, + unsigned int dma_sync_size, bool allow_direct); static inline void page_pool_put_page(struct page_pool *pool, struct page *page, bool allow_direct) @@ -161,14 +173,14 @@ static inline void page_pool_put_page(struct page_pool *pool, * allow registering MEM_TYPE_PAGE_POOL, but shield linker. */ #ifdef CONFIG_PAGE_POOL - __page_pool_put_page(pool, page, allow_direct); + __page_pool_put_page(pool, page, -1, allow_direct); #endif } /* Very limited use-cases allow recycle direct */ static inline void page_pool_recycle_direct(struct page_pool *pool, struct page *page) { - __page_pool_put_page(pool, page, true); + __page_pool_put_page(pool, page, -1, true); } /* Disconnects a page (from a page_pool). API users can have a need |