skb_frag_dma_map — maps a paged fragment via the DMA API
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); |
struct device * devthe device to map the fragment to
const skb_frag_t * fragthe paged fragment to map
size_t offsetthe offset within the fragment (starting at the fragment's own offset)
size_t sizethe number of bytes to map
enum dma_data_direction dir
the direction of the mapping (PCI_DMA_*)