RDMA/hns: Add vendor_err info to error WC
ULP can get more error information of CQ through verbs instead of prints. Link: https://lore.kernel.org/r/1624362836-11631-1-git-send-email-liweihang@huawei.comSigned-off-by: NLang Cheng <chenglang@huawei.com> Signed-off-by: NWeihang Li <liweihang@huawei.com> Signed-off-by: NJason Gunthorpe <jgg@nvidia.com>
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