In common practice, PMD configure the Rx buffer size which indicate the buffer length could be used for HW in receiving packets 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 receiving packets 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 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 receiving packets for HW. And this field is optional, so there is no need to forcibly update all PMDs. This patchset also update testpmd, proc-info tools and add hns3 PMD implementation. v4: - remove deprecation notice once changes applied Chengchang Tang (5): ethdev: add a field for rxq info structure app/testpmd: add Rx buffer size display in queue info query app/procinfo: add Rx buffer size to --show-port net/hns3: add Rx buffer size to Rx qinfo query doc: remove rxq info structure deprecation notice app/proc-info/main.c | 2 ++ app/test-pmd/config.c | 1 + doc/guides/rel_notes/deprecation.rst | 5 ----- drivers/net/hns3/hns3_rxtx.c | 2 ++ lib/librte_ethdev/rte_ethdev.h | 2 ++ 5 files changed, 7 insertions(+), 5 deletions(-) -- 2.7.4
