Re: [dpdk-dev] [RFC v2 0/3] add rx buffer size for rte_eth_rxq_info

[Chengchang Tang <tangchengchang@huawei.com>]

Friendly ping

On 2020/7/22 14:38, Chengchang Tang wrote:
> In common practice, PMD configure the rx buffer size which indicate the
> buffer length could be used for hw in receiving packts according to the
> data room size of the object in mempool. But in fact the final value is
> related to the specifications of hw, and its values will affect the number
> of fragments in recieving pkts when scatter is enabled. By the way, some
> PMDs may force to enable scatter when the MTU is bigger than the hw rx
> buffer size.
> 
> At present, we seem to have no way to expose relevant information to upper
> layer users.
> 
> So, add a field named rx_buf_size in rte_eth_rxq_info to indicate the
> buffer size used in recieving pkts for hw. And this patchset also add hns3
> PMD implementation and update the testpmd to clarify intention.
> 
> v2:
> Add hns3 implementation and update testpmd.
> 
> Chengchang Tang (2):
>   ethdev: add a field for rte_eth_rxq_info
>   app/testpmd: Add RX buffer size dispaly in queue info querry
> 
> Huisong Li (1):
>   net/hns3: add support for query of rx/tx queue info
> 
>  app/test-pmd/config.c             |  1 +
>  drivers/net/hns3/hns3_ethdev.c    |  2 ++
>  drivers/net/hns3/hns3_ethdev_vf.c |  2 ++
>  drivers/net/hns3/hns3_rxtx.c      | 48 +++++++++++++++++++++++++++++++++++++++
>  drivers/net/hns3/hns3_rxtx.h      |  4 ++++
>  lib/librte_ethdev/rte_ethdev.h    |  2 ++
>  6 files changed, 59 insertions(+)
> 
> --
> 2.7.4
> 
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