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eth_dma_rx_descriptor_t struct
Ethernet DMA RX Descriptor
Syntax
typedef struct
{
volatile union {
struct {
uint32_t ExtendStatusAvailable : 1;
uint32_t CRCErr : 1;
uint32_t DribbleBitErr : 1;
uint32_t ReceiveErr : 1;
uint32_t ReceiveWatchdogTimeout : 1;
uint32_t FrameType : 1;
uint32_t LateCollision : 1;
uint32_t TSAvailIPChecksumErrGiantFrame : 1;
uint32_t LastDescriptor : 1;
uint32_t FirstDescriptor : 1;
uint32_t VLANTag : 1;
uint32_t OverflowErr : 1;
uint32_t LengthErr : 1;
uint32_t SourceAddrFilterFail : 1;
uint32_t DescriptorErr : 1;
uint32_t ErrSummary : 1;
uint32_t FrameLength : 14;
uint32_t DestinationAddrFilterFail : 1;
uint32_t Own : 1;
};
uint32_t Value;
} RDES0;
union {
struct {
uint32_t ReceiveBuffer1Size : 13;
uint32_t Reserved1 : 1;
uint32_t SecondAddressChained : 1;
uint32_t ReceiveEndOfRing : 1;
uint32_t ReceiveBuffer2Size : 13;
uint32_t Reserved : 2;
uint32_t DisableInterruptOnComplete : 1;
};
uint32_t Value;
} RDES1;
uint32_t Buffer1Addr;
uint32_t Buffer2NextDescAddr;
volatile union {
struct {
uint32_t IPPayloadType : 3;
uint32_t IPHeadErr : 1;
uint32_t IPPayloadErr : 1;
uint32_t IPChecksumBypass : 1;
uint32_t IPv4PacketReceived : 1;
uint32_t IPv6PacketReceived : 1;
uint32_t MessageType : 4;
uint32_t PTPFrameType : 1;
uint32_t PTPVersion : 1;
uint32_t TimestampDropped : 1;
uint32_t Reserved1 : 1;
uint32_t AVPacketReceived : 1;
uint32_t AVTaggedPacketReceived : 1;
uint32_t VLANTagPrioVal : 3;
uint32_t Reserved2 : 3;
uint32_t Layer3FilterMatch : 1;
uint32_t Layer4FilterMatch : 1;
uint32_t Layer3Layer4FilterNumberMatch : 2;
uint32_t Reserved3 : 4;
};
uint32_t Value;
} ExtendedStatus;
uint32_t Reserved;
uint32_t TimeStampLow;
uint32_t TimeStampHigh;
#if SOC_CACHE_INTERNAL_MEM_VIA_L1CACHE
uint8_t CacheAlign[EMAC_HAL_DMA_DESC_SIZE - 32];
#endif
} eth_dma_rx_descriptor_t;
Fields
Field
Declared as
Description
volatile union {
struct {
uint32_t ExtendStatusAvailable : 1;
uint32_t CRCErr : 1;
uint32_t DribbleBitErr : 1;
uint32_t ReceiveErr : 1;
uint32_t ReceiveWatchdogTimeout : 1;
uint32_t FrameType : 1;
uint32_t LateCollision : 1;
uint32_t TSAvailIPChecksumErrGiantFrame : 1;
uint32_t LastDescriptor : 1;
uint32_t FirstDescriptor : 1;
uint32_t VLANTag : 1;
uint32_t OverflowErr : 1;
uint32_t LengthErr : 1;
uint32_t SourceAddrFilterFail : 1;
uint32_t DescriptorErr : 1;
uint32_t ErrSummary : 1;
uint32_t FrameLength : 14;
uint32_t DestinationAddrFilterFail : 1;
uint32_t Own : 1;
};
uint32_t Value;
}
union {
struct {
uint32_t ReceiveBuffer1Size : 13;
uint32_t Reserved1 : 1;
uint32_t SecondAddressChained : 1;
uint32_t ReceiveEndOfRing : 1;
uint32_t ReceiveBuffer2Size : 13;
uint32_t Reserved : 2;
uint32_t DisableInterruptOnComplete : 1;
};
uint32_t Value;
}
volatile union {
struct {
uint32_t IPPayloadType : 3;
uint32_t IPHeadErr : 1;
uint32_t IPPayloadErr : 1;
uint32_t IPChecksumBypass : 1;
uint32_t IPv4PacketReceived : 1;
uint32_t IPv6PacketReceived : 1;
uint32_t MessageType : 4;
uint32_t PTPFrameType : 1;
uint32_t PTPVersion : 1;
uint32_t TimestampDropped : 1;
uint32_t Reserved1 : 1;
uint32_t AVPacketReceived : 1;
uint32_t AVTaggedPacketReceived : 1;
uint32_t VLANTagPrioVal : 3;
uint32_t Reserved2 : 3;
uint32_t Layer3FilterMatch : 1;
uint32_t Layer4FilterMatch : 1;
uint32_t Layer3Layer4FilterNumberMatch : 2;
uint32_t Reserved3 : 4;
};
uint32_t Value;
}