RDMA/hns: Fix 0-length sge calculation error

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One RC SQ WQE can store 2 sges but UD can't, so ignore 2 valid sges of
wr.sglist for RC which have been filled in WQE before setting extended
sge.  Either of RC and UD can not contain 0-length sges, so these 0-length
sges should be skipped.

Fixes: 54d6638765 ("RDMA/hns: Optimize WQE buffer size calculating process")
Link: https://lore.kernel.org/r/1606558959-48510-2-git-send-email-liweihang@huawei.com
Signed-off-by: Lang Cheng <chenglang@huawei.com>
Signed-off-by: Weihang Li <liweihang@huawei.com>
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>

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Lang Cheng 2020-11-28 18:22:37 +08:00 • committed by Jason Gunthorpe

parent 1d11d26cf0

commit 0fd0175e30

1 changed files with 10 additions and 14 deletions

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drivers/infiniband/hw/hns/hns_roce_hw_v2.c

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