diff options
| author | Wenpeng Liang <liangwenpeng@huawei.com> | 2021-01-30 11:58:03 +0300 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@nvidia.com> | 2021-02-09 02:37:34 +0300 |
| commit | 6ee00fbf733d7e17ca935e5636adfce605b10659 (patch) | |
| tree | c5b22c262b1182d232af8f4600c679aa88db736f /drivers/infiniband | |
| parent | bb74fe7e81c8b2b65c6a351a247fdb9a969cbaec (diff) | |
| download | linux-6ee00fbf733d7e17ca935e5636adfce605b10659.tar.xz | |
RDMA/hns: Remove the reserved WQE of SRQ
Each SRQs contain an reserved WQE, it is inappropriate and should be
removed.
Fixes: c7bcb13442e1 ("RDMA/hns: Add SRQ support for hip08 kernel mode")
Link: https://lore.kernel.org/r/1611997090-48820-6-git-send-email-liweihang@huawei.com
Signed-off-by: Wenpeng Liang <liangwenpeng@huawei.com>
Signed-off-by: Weihang Li <liweihang@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Diffstat (limited to 'drivers/infiniband')
| -rw-r--r-- | drivers/infiniband/hw/hns/hns_roce_device.h | 1 | ||||
| -rw-r--r-- | drivers/infiniband/hw/hns/hns_roce_hw_v2.c | 6 | ||||
| -rw-r--r-- | drivers/infiniband/hw/hns/hns_roce_srq.c | 6 |
3 files changed, 8 insertions, 5 deletions
diff --git a/drivers/infiniband/hw/hns/hns_roce_device.h b/drivers/infiniband/hw/hns/hns_roce_device.h index 916e031f1e75..d6a846b47820 100644 --- a/drivers/infiniband/hw/hns/hns_roce_device.h +++ b/drivers/infiniband/hw/hns/hns_roce_device.h @@ -54,6 +54,7 @@ /* Hardware specification only for v1 engine */ #define HNS_ROCE_MIN_CQE_NUM 0x40 #define HNS_ROCE_MIN_WQE_NUM 0x20 +#define HNS_ROCE_MIN_SRQ_WQE_NUM 1 /* Hardware specification only for v1 engine */ #define HNS_ROCE_MAX_INNER_MTPT_NUM 0x7 diff --git a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c index b13775a4c512..49a845603b02 100644 --- a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c +++ b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c @@ -860,7 +860,7 @@ int hns_roce_srqwq_overflow(struct hns_roce_srq *srq, int nreq) unsigned int cur; cur = idx_que->head - idx_que->tail; - return cur + nreq >= srq->wqe_cnt - 1; + return cur + nreq >= srq->wqe_cnt; } static int find_empty_entry(struct hns_roce_idx_que *idx_que, @@ -5338,7 +5338,7 @@ static int hns_roce_v2_modify_srq(struct ib_srq *ibsrq, return -EINVAL; if (srq_attr_mask & IB_SRQ_LIMIT) { - if (srq_attr->srq_limit >= srq->wqe_cnt) + if (srq_attr->srq_limit > srq->wqe_cnt) return -EINVAL; mailbox = hns_roce_alloc_cmd_mailbox(hr_dev); @@ -5401,7 +5401,7 @@ static int hns_roce_v2_query_srq(struct ib_srq *ibsrq, struct ib_srq_attr *attr) SRQC_BYTE_8_SRQ_LIMIT_WL_S); attr->srq_limit = limit_wl; - attr->max_wr = srq->wqe_cnt - 1; + attr->max_wr = srq->wqe_cnt; attr->max_sge = srq->max_gs - srq->rsv_sge; out: diff --git a/drivers/infiniband/hw/hns/hns_roce_srq.c b/drivers/infiniband/hw/hns/hns_roce_srq.c index 47e66fe74d19..5d20b30f8004 100644 --- a/drivers/infiniband/hw/hns/hns_roce_srq.c +++ b/drivers/infiniband/hw/hns/hns_roce_srq.c @@ -320,7 +320,7 @@ int hns_roce_create_srq(struct ib_srq *ib_srq, max_sge = proc_srq_sge(hr_dev, srq, !!udata); - if (init_attr->attr.max_wr >= hr_dev->caps.max_srq_wrs || + if (init_attr->attr.max_wr > hr_dev->caps.max_srq_wrs || init_attr->attr.max_sge > max_sge) { ibdev_err(&hr_dev->ib_dev, "SRQ config error, depth = %u, sge = %d\n", @@ -331,7 +331,9 @@ int hns_roce_create_srq(struct ib_srq *ib_srq, mutex_init(&srq->mutex); spin_lock_init(&srq->lock); - srq->wqe_cnt = roundup_pow_of_two(init_attr->attr.max_wr + 1); + init_attr->attr.max_wr = max_t(u32, init_attr->attr.max_wr, + HNS_ROCE_MIN_SRQ_WQE_NUM); + srq->wqe_cnt = roundup_pow_of_two(init_attr->attr.max_wr); srq->max_gs = roundup_pow_of_two(init_attr->attr.max_sge + srq->rsv_sge); init_attr->attr.max_wr = srq->wqe_cnt; |