IB/hns: Fix the bug when free cq

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If the resources of cq are freed while executing the user case, hardware
can not been notified in hip06 SoC. Then hardware will hold on when it
writes the cq buffer which has been released.

In order to slove this problem, RoCE driver checks the CQE counter, and
ensure that the outstanding CQE have been written. Then the cq buffer
can be released.

Signed-off-by: Shaobo Xu <xushaobo2@huawei.com>
Reviewed-by: Wei Hu (Xavier) <xavier.huwei@huawei.com>
Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>

...

This commit is contained in:

Shaobo Xu 2016-11-29 23:10:29 +00:00 • committed by Doug Ledford

parent 19a408efa0

commit afb6b092d6

4 changed files with 79 additions and 11 deletions

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2

drivers/infiniband/hw/hns/hns_roce_common.h

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27

drivers/infiniband/hw/hns/hns_roce_cq.c

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8

drivers/infiniband/hw/hns/hns_roce_device.h

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53

drivers/infiniband/hw/hns/hns_roce_hw_v1.c

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