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STM32 - fix bug where sockets stop receiving data #4536

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Merged
merged 1 commit into from
Jun 13, 2017
Merged

STM32 - fix bug where sockets stop receiving data #4536

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22 changes: 11 additions & 11 deletions features/FEATURE_LWIP/lwip-interface/lwip-eth/arch/TARGET_STM/stm32xx_emac.c
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Original file line number Diff line number Diff line change
Expand Up @@ -305,20 +305,20 @@ static struct pbuf * _eth_arch_low_level_input(struct netif *netif)
memcpy((uint8_t*)((uint8_t*)q->payload + payloadoffset), (uint8_t*)((uint8_t*)buffer + bufferoffset), byteslefttocopy);
bufferoffset = bufferoffset + byteslefttocopy;
}
}

/* Release descriptors to DMA */
/* Point to first descriptor */
dmarxdesc = EthHandle.RxFrameInfos.FSRxDesc;
/* Set Own bit in Rx descriptors: gives the buffers back to DMA */
for (i = 0; i < EthHandle.RxFrameInfos.SegCount; i++) {
dmarxdesc->Status |= ETH_DMARXDESC_OWN;
dmarxdesc = (ETH_DMADescTypeDef*)(dmarxdesc->Buffer2NextDescAddr);
}

/* Clear Segment_Count */
EthHandle.RxFrameInfos.SegCount = 0;
/* Release descriptors to DMA */
/* Point to first descriptor */
dmarxdesc = EthHandle.RxFrameInfos.FSRxDesc;
/* Set Own bit in Rx descriptors: gives the buffers back to DMA */
for (i = 0; i < EthHandle.RxFrameInfos.SegCount; i++) {
dmarxdesc->Status |= ETH_DMARXDESC_OWN;
dmarxdesc = (ETH_DMADescTypeDef*)(dmarxdesc->Buffer2NextDescAddr);
}

/* Clear Segment_Count */
EthHandle.RxFrameInfos.SegCount = 0;

/* When Rx Buffer unavailable flag is set: clear it and resume reception */
if ((EthHandle.Instance->DMASR & ETH_DMASR_RBUS) != (uint32_t)RESET) {
/* Clear RBUS ETHERNET DMA flag */
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