EnetUdma_DmaDesc Struct Reference

Detailed Description

CPPI DMA descriptor.

The format of a single DMA descriptor to be transmitted via the Enet UDMA interface.

Data Structures
struct	EnetUdma_HBDDesc_s

Data Fields
EnetUdma_CpswHpdDesc	hpdDesc
struct EnetUdma_DmaDesc::EnetUdma_HBDDesc_s	hostBufDesc [ENET_UDMA_CPSW_MAX_HOSTBUFDESC_COUNT]
struct EnetUdma_DmaDesc_s *	pNextDesc
EnetDma_Pkt *	dmaPkt

Field Documentation

hpdDesc

EnetUdma_CpswHpdDesc EnetUdma_DmaDesc::hpdDesc

CPPI HPD descriptor. Note: This MUST be first member as it is typecasted to EnetUdma_CpswHpdDesc

hostBufDesc

struct EnetUdma_DmaDesc::EnetUdma_HBDDesc_s EnetUdma_DmaDesc::hostBufDesc[ENET_UDMA_CPSW_MAX_HOSTBUFDESC_COUNT]

pNextDesc

struct EnetUdma_DmaDesc_s* EnetUdma_DmaDesc::pNextDesc

Pointer to next DMA desc in the queue

dmaPkt

EnetDma_Pkt* EnetUdma_DmaDesc::dmaPkt

Application packet details - this is used by application to store original packet info. This is to avoid asking buffer address from driver descriptor