diff options
| author | Lang Cheng <chenglang@huawei.com> | 2021-01-30 16:57:59 +0800 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@nvidia.com> | 2021-02-08 19:37:33 -0400 |
| commit | 9dd052474a2645b2a6171d19ad17b05b180d446d (patch) | |
| tree | 420ded46006a3b9c38e46d219a7187b73fa58e19 /drivers/infiniband/hw/hns/hns_roce_hw_v2.h | |
| parent | 899aba891cab1555c9ca16a558769efb177baf44 (diff) | |
RDMA/hns: Allocate one more recv SGE for HIP08
The RQ/SRQ of HIP08 needs one special sge to stop receive reliably. So the
driver needs to allocate at least one SGE when creating RQ/SRQ and ensure
that at least one SGE is filled with the special value during post_recv.
Besides, the kernel driver should only do this for kernel ULP. For
userspace ULP, the userspace driver will allocate the reserved SGE in
buffer, and the kernel driver just needs to pin the corresponding size of
memory based on the userspace driver's requirements.
Link: https://lore.kernel.org/r/1611997090-48820-2-git-send-email-liweihang@huawei.com
Signed-off-by: Lang Cheng <chenglang@huawei.com>
Signed-off-by: Weihang Li <liweihang@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Diffstat (limited to 'drivers/infiniband/hw/hns/hns_roce_hw_v2.h')
| -rw-r--r-- | drivers/infiniband/hw/hns/hns_roce_hw_v2.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/infiniband/hw/hns/hns_roce_hw_v2.h b/drivers/infiniband/hw/hns/hns_roce_hw_v2.h index 69bc072a941d..cd9abdd12ffc 100644 --- a/drivers/infiniband/hw/hns/hns_roce_hw_v2.h +++ b/drivers/infiniband/hw/hns/hns_roce_hw_v2.h @@ -96,7 +96,8 @@ #define HNS_ROCE_V2_CQC_TIMER_ENTRY_SZ PAGE_SIZE #define HNS_ROCE_V2_PAGE_SIZE_SUPPORTED 0xFFFFF000 #define HNS_ROCE_V2_MAX_INNER_MTPT_NUM 2 -#define HNS_ROCE_INVALID_LKEY 0x100 +#define HNS_ROCE_INVALID_LKEY 0x0 +#define HNS_ROCE_INVALID_SGE_LENGTH 0x80000000 #define HNS_ROCE_CMQ_TX_TIMEOUT 30000 #define HNS_ROCE_V2_UC_RC_SGE_NUM_IN_WQE 2 #define HNS_ROCE_V2_RSV_QPS 8 |