diff options
| author | Yixing Liu <liuyixing1@huawei.com> | 2022-03-10 07:28:35 +0300 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@nvidia.com> | 2022-03-16 02:19:00 +0300 |
| commit | 70f92521584f1d1e8268311ee84413307b0fdea8 (patch) | |
| tree | ef4a4f389071941724da40035decef3293fc0315 /drivers/infiniband/hw/hns/hns_roce_hw_v2.h | |
| parent | 51cad2872435f79c63b81503d8d1c9f143172489 (diff) | |
| download | linux-70f92521584f1d1e8268311ee84413307b0fdea8.tar.xz | |
RDMA/hns: Use the reserved loopback QPs to free MR before destroying MPT
Before destroying MPT, the reserved loopback QPs send loopback IOs (one
write operation per SL). Completing these loopback IOs represents that
there isn't any outstanding request in MPT, then it's safe to destroy MPT.
Link: https://lore.kernel.org/r/20220310042835.38634-1-liangwenpeng@huawei.com
Signed-off-by: Yixing Liu <liuyixing1@huawei.com>
Signed-off-by: Wenpeng Liang <liangwenpeng@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 | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/hns/hns_roce_hw_v2.h b/drivers/infiniband/hw/hns/hns_roce_hw_v2.h index 12be85f0986e..0d87b627601e 100644 --- a/drivers/infiniband/hw/hns/hns_roce_hw_v2.h +++ b/drivers/infiniband/hw/hns/hns_roce_hw_v2.h @@ -139,6 +139,18 @@ enum { #define CMD_CSQ_DESC_NUM 1024 #define CMD_CRQ_DESC_NUM 1024 +/* Free mr used parameters */ +#define HNS_ROCE_FREE_MR_USED_CQE_NUM 128 +#define HNS_ROCE_FREE_MR_USED_QP_NUM 0x8 +#define HNS_ROCE_FREE_MR_USED_PSN 0x0808 +#define HNS_ROCE_FREE_MR_USED_QP_RETRY_CNT 0x7 +#define HNS_ROCE_FREE_MR_USED_QP_TIMEOUT 0x12 +#define HNS_ROCE_FREE_MR_USED_SQWQE_NUM 128 +#define HNS_ROCE_FREE_MR_USED_SQSGE_NUM 0x2 +#define HNS_ROCE_FREE_MR_USED_RQWQE_NUM 128 +#define HNS_ROCE_FREE_MR_USED_RQSGE_NUM 0x2 +#define HNS_ROCE_V2_FREE_MR_TIMEOUT 4500 + enum { NO_ARMED = 0x0, REG_NXT_CEQE = 0x2, @@ -1418,10 +1430,18 @@ struct hns_roce_link_table { #define HNS_ROCE_EXT_LLM_ENTRY(addr, id) (((id) << (64 - 12)) | ((addr) >> 12)) #define HNS_ROCE_EXT_LLM_MIN_PAGES(que_num) ((que_num) * 4 + 2) +struct hns_roce_v2_free_mr { + struct ib_qp *rsv_qp[HNS_ROCE_FREE_MR_USED_QP_NUM]; + struct ib_cq *rsv_cq; + struct ib_pd *rsv_pd; + struct mutex mutex; +}; + struct hns_roce_v2_priv { struct hnae3_handle *handle; struct hns_roce_v2_cmq cmq; struct hns_roce_link_table ext_llm; + struct hns_roce_v2_free_mr free_mr; }; struct hns_roce_dip { |