return 0;
}
-static int set_extend_sge_param(struct hns_roce_dev *hr_dev, u32 sq_wqe_cnt,
- struct hns_roce_qp *hr_qp,
- struct ib_qp_cap *cap)
+static u32 get_wqe_ext_sge_cnt(struct hns_roce_qp *qp)
{
- u32 cnt;
+ /* GSI/UD QP only has extended sge */
+ if (qp->ibqp.qp_type == IB_QPT_GSI || qp->ibqp.qp_type == IB_QPT_UD)
+ return qp->sq.max_gs;
- cnt = max(1U, cap->max_send_sge);
- if (hr_dev->hw_rev == HNS_ROCE_HW_VER1) {
- hr_qp->sq.max_gs = roundup_pow_of_two(cnt);
- hr_qp->sge.sge_cnt = 0;
+ if (qp->sq.max_gs > HNS_ROCE_SGE_IN_WQE)
+ return qp->sq.max_gs - HNS_ROCE_SGE_IN_WQE;
- return 0;
- }
+ return 0;
+}
- hr_qp->sq.max_gs = cnt;
+static void set_ext_sge_param(struct hns_roce_dev *hr_dev, u32 sq_wqe_cnt,
+ struct hns_roce_qp *hr_qp, struct ib_qp_cap *cap)
+{
+ u32 total_sge_cnt;
+ u32 wqe_sge_cnt;
- /* UD sqwqe's sge use extend sge */
- if (hr_qp->ibqp.qp_type == IB_QPT_GSI ||
- hr_qp->ibqp.qp_type == IB_QPT_UD) {
- cnt = roundup_pow_of_two(sq_wqe_cnt * hr_qp->sq.max_gs);
- } else if (hr_qp->sq.max_gs > HNS_ROCE_SGE_IN_WQE) {
- cnt = roundup_pow_of_two(sq_wqe_cnt *
- (hr_qp->sq.max_gs - HNS_ROCE_SGE_IN_WQE));
- } else {
- cnt = 0;
+ hr_qp->sge.sge_shift = HNS_ROCE_SGE_SHIFT;
+
+ if (hr_dev->hw_rev == HNS_ROCE_HW_VER1) {
+ hr_qp->sq.max_gs = HNS_ROCE_SGE_IN_WQE;
+ return;
}
- hr_qp->sge.sge_shift = HNS_ROCE_SGE_SHIFT;
+ hr_qp->sq.max_gs = max(1U, cap->max_send_sge);
+
+ wqe_sge_cnt = get_wqe_ext_sge_cnt(hr_qp);
/* If the number of extended sge is not zero, they MUST use the
* space of HNS_HW_PAGE_SIZE at least.
*/
- hr_qp->sge.sge_cnt = cnt ?
- max(cnt, (u32)HNS_HW_PAGE_SIZE / HNS_ROCE_SGE_SIZE) : 0;
-
- return 0;
+ if (wqe_sge_cnt) {
+ total_sge_cnt = roundup_pow_of_two(sq_wqe_cnt * wqe_sge_cnt);
+ hr_qp->sge.sge_cnt = max(total_sge_cnt,
+ (u32)HNS_HW_PAGE_SIZE / HNS_ROCE_SGE_SIZE);
+ }
}
static int check_sq_size_with_integrity(struct hns_roce_dev *hr_dev,
return ret;
}
- ret = set_extend_sge_param(hr_dev, cnt, hr_qp, cap);
- if (ret)
- return ret;
+ set_ext_sge_param(hr_dev, cnt, hr_qp, cap);
hr_qp->sq.wqe_shift = ucmd->log_sq_stride;
hr_qp->sq.wqe_cnt = cnt;
{
struct ib_device *ibdev = &hr_dev->ib_dev;
u32 cnt;
- int ret;
if (!cap->max_send_wr || cap->max_send_wr > hr_dev->caps.max_wqes ||
cap->max_send_sge > hr_dev->caps.max_sq_sg) {
hr_qp->sq.wqe_shift = ilog2(hr_dev->caps.max_sq_desc_sz);
hr_qp->sq.wqe_cnt = cnt;
- ret = set_extend_sge_param(hr_dev, cnt, hr_qp, cap);
- if (ret)
- return ret;
+ set_ext_sge_param(hr_dev, cnt, hr_qp, cap);
/* sync the parameters of kernel QP to user's configuration */
cap->max_send_wr = cnt;