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| SKB_FRAG_DMA_MAP(9) | Linux Networking | SKB_FRAG_DMA_MAP(9) |
NAME¶
skb_frag_dma_map - maps a paged fragment via the DMA API
SYNOPSIS¶
dma_addr_t skb_frag_dma_map(struct device * dev, const skb_frag_t * frag, size_t offset, size_t size, enum dma_data_direction dir);
ARGUMENTS¶
struct device * dev
the device to map the fragment to
const skb_frag_t * frag
the paged fragment to map
size_t offset
the offset within the fragment (starting at the
fragment's own offset)
size_t size
the number of bytes to map
enum dma_data_direction dir
the direction of the mapping (PCI_DMA_*)
DESCRIPTION¶
Maps the page associated with frag to device.
COPYRIGHT¶
| September 2017 | Kernel Hackers Manual 4.12 |