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

Chengchang Tang tangchengchang at huawei.com
Wed Jul 22 08:38:07 CEST 2020


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



More information about the dev mailing list