This small patchset introduces the support of hardware statistics. Statistics counters can not be put in CQEs due to limited CQE size. To address this, we provide an extra dma buffer to hardware when posting statistics query request, and then hardware writes back the response to this dma buffer. Based on this, we add the hardware statistics support of erdma. - #1 introduces dma pool used for hardware responses of CMDQ requests. - #2 adds hardware statistics support. Cheng Xu (2): RDMA/erdma: Introduce dma pool for hardware responses of CMDQ requests RDMA/erdma: Add hardware statistics support drivers/infiniband/hw/erdma/erdma.h | 2 + drivers/infiniband/hw/erdma/erdma_hw.h | 40 +++++++++ drivers/infiniband/hw/erdma/erdma_main.c | 40 ++++++++- drivers/infiniband/hw/erdma/erdma_verbs.c | 100 +++++++++++++++++++++- drivers/infiniband/hw/erdma/erdma_verbs.h | 4 + 5 files changed, 180 insertions(+), 6 deletions(-) -- 2.31.1
