RDMA/erdma: Notify the latest PI to FW for reflushing when necessary

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Firmware is responsible for flushing WRs in HW, and it's a little
difficult for firmware to get the latest PI of QPs, especially for RQs
after QP state being changed to ERROR. So we introduce a new CMDQ command,
by which driver can notify to latest PI to FW, and then FW can flush all
posted WRs.

Link: https://lore.kernel.org/r/20221116023107.82835-4-chengyou@linux.alibaba.com
Signed-off-by: Cheng Xu <chengyou@linux.alibaba.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>

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Cheng Xu 2022-11-16 10:31:07 +08:00 • committed by Jason Gunthorpe

parent 54d8fffc2a

commit 0edf42cbcc

2 changed files with 26 additions and 9 deletions

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30

drivers/infiniband/hw/erdma/erdma_qp.c

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5

drivers/infiniband/hw/erdma/erdma_verbs.h

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