On 11/29/2022 1:21 AM, Chaoyong He wrote:
> From: Long Wu <long...@corigine.com>
>
> If dma_len is larger than NFDK_DESC_TX_DMA_LEN_HEAD, the value of
> dma_len bitwise and NFDK_DESC_TX_DMA_LEN_HEAD maybe less than packet
> head length and the packet will be dropped. Fill maximum dma_len in
> first tx descriptor to make sure the whole head is included in the
> first descriptor. In addition, add comments to better explain the
> code flow.
>
updated patch title as:
net/nfp: fix Tx packet drop for large data length
> Fixes: c73dced48c8c ("net/nfp: add NFDk Tx")
> Cc: jin....@corigine.com
> Cc: sta...@dpdk.org
>
> Signed-off-by: Long Wu <long...@corigine.com>
> Reviewed-by: Niklas Söderlund <niklas.soderl...@corigine.com>
Applied to dpdk-next-net/main, thanks.
Below changes done while merging.
> + /*
> + * We will do our best to pass as much data as we can in
> descriptor
> + * and we need to make sure the first descriptor includes whole
> + * head since there is limitation in firmware side. Sometimes
> the
> + * value of dma_len bitwise & NFDK_DESC_TX_DMA_LEN_HEAD will
> less
> + * than packet head len.
> + */
Updated last line as:
" * value of 'dma_len & NFDK_DESC_TX_DMA_LEN_HEAD' will be less "
<...>
>
> + /*
> + * The rest of the data (if any) will be in larger dma
> descritors
s/descritors/descriptors/
s/dma/DMA/
