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
