EnetDma_CbStats Struct Reference

Detailed Description

Stats for packets submitted/retrieved in the DMA event callbacks functions.

Data Fields
uint64_t	dataNotifyCnt
uint64_t	zeroNotifyCnt
uint64_t	totalPktCnt
uint64_t	totalCycleCnt
uint64_t	pktsPerNotifyMax
uint64_t	pktsPerNotify [ENET_DMA_STATS_HISTORY_CNT]
uint64_t	cycleCntPerNotifyMax
uint64_t	cycleCntPerNotify [ENET_DMA_STATS_HISTORY_CNT]
uint64_t	cycleCntPerPktMax
uint64_t	cycleCntPerPkt [ENET_DMA_STATS_HISTORY_CNT]
uint64_t	readyDmaDescQCnt [ENET_DMA_STATS_HISTORY_CNT]

Field Documentation

dataNotifyCnt

uint64_t EnetDma_CbStats::dataNotifyCnt

Total number of times the packets were submitted or retrieved from DMA

zeroNotifyCnt

uint64_t EnetDma_CbStats::zeroNotifyCnt

Counts when DMA retrievePkts is called but no packets was retrieved. This count can help in determining optimal pacing interval

totalPktCnt

uint64_t EnetDma_CbStats::totalPktCnt

Total number of packets submitted or retrieved from DMA

totalCycleCnt

uint64_t EnetDma_CbStats::totalCycleCnt

Total cycles consumed to submit or retrieve totalPktCnt packets from DMA

pktsPerNotifyMax

uint64_t EnetDma_CbStats::pktsPerNotifyMax

Maximum packets retrieved in single submit or retrieve call. This count can help in determining optimal number of DMA descriptors and packet counts to be allocated

pktsPerNotify

uint64_t EnetDma_CbStats::pktsPerNotify[ENET_DMA_STATS_HISTORY_CNT]

Packets retrieved per call to single submit or retrieve call. Maintained for last ENET_DMA_STATS_HISTORY_CNT packets

cycleCntPerNotifyMax

uint64_t EnetDma_CbStats::cycleCntPerNotifyMax

Maximum of cycles consumed of all submit or retrieve call.

cycleCntPerNotify

uint64_t EnetDma_CbStats::cycleCntPerNotify[ENET_DMA_STATS_HISTORY_CNT]

Cycles consumed per call to single submit or retrieve call. Maintained for last ENET_DMA_STATS_HISTORY_CNT packets

cycleCntPerPktMax

uint64_t EnetDma_CbStats::cycleCntPerPktMax

Maximum cycles for single packet in submit or retrieve call

cycleCntPerPkt

uint64_t EnetDma_CbStats::cycleCntPerPkt[ENET_DMA_STATS_HISTORY_CNT]

Cycles per packet in submit or retrieve call. Maintained for last ENET_DMA_STATS_HISTORY_CNT packets

readyDmaDescQCnt

uint64_t EnetDma_CbStats::readyDmaDescQCnt[ENET_DMA_STATS_HISTORY_CNT]

Number of free DMA descriptors in the RX channels or TX channels DMA descriptor queue. Maintained for last ENET_DMA_STATS_HISTORY_CNT packets. This can be useful to detect and handle drops in packet bursts