diff mbox series

[RESEND,v4,for-next] RDMA/hns: Check if depth of qp is 0 before configure

Message ID 1584006624-11846-1-git-send-email-liweihang@huawei.com (mailing list archive)
State Mainlined
Commit 026ded373483c07983a6a30b70034ad0f3667a44
Delegated to: Jason Gunthorpe
Headers show
Series [RESEND,v4,for-next] RDMA/hns: Check if depth of qp is 0 before configure | expand

Commit Message

Weihang Li March 12, 2020, 9:50 a.m. UTC 
From: Lang Cheng <chenglang@huawei.com>

Depth of qp shouldn't be allowed to be set to zero, after ensuring that,
subsequent process can be simplified. And when qp is changed from reset to
reset, the capability of minimum qp depth was used to identify hardware of
hip06, it should be changed into a more readable form.

Signed-off-by: Lang Cheng <chenglang@huawei.com>
Signed-off-by: Weihang Li <liweihang@huawei.com>
---
This patch is named "RDMA/hns: Support to set mininum depth of qp to 0"
before v3, and previous discussions can be found at:
https://patchwork.kernel.org/patch/11415067/

Changes since v3:
- Remove a "Reviewed-by" tag that hasn't been authorized.

Changes since v2:
- Update this patch's name and description according to the modification of
  code.

Changes since v1:
- Fix comments from Leon about calculation of max_cnt, check for qp's depth
  and modification of the prints.
- Optimize logic of codes to make them more readable.
- Replace dev_err() with ibdev_err().

 drivers/infiniband/hw/hns/hns_roce_qp.c | 77 ++++++++++++++-------------------
 1 file changed, 33 insertions(+), 44 deletions(-)

Comments

Jason Gunthorpe March 18, 2020, 10:42 p.m. UTC | #1 
On Thu, Mar 12, 2020 at 05:50:24PM +0800, Weihang Li wrote:
> From: Lang Cheng <chenglang@huawei.com>
> 
> Depth of qp shouldn't be allowed to be set to zero, after ensuring that,
> subsequent process can be simplified. And when qp is changed from reset to
> reset, the capability of minimum qp depth was used to identify hardware of
> hip06, it should be changed into a more readable form.
> 
> Signed-off-by: Lang Cheng <chenglang@huawei.com>
> Signed-off-by: Weihang Li <liweihang@huawei.com>
> ---
> This patch is named "RDMA/hns: Support to set mininum depth of qp to 0"
> before v3, and previous discussions can be found at:
> https://patchwork.kernel.org/patch/11415067/
> 
> Changes since v3:
> - Remove a "Reviewed-by" tag that hasn't been authorized.
> 
> Changes since v2:
> - Update this patch's name and description according to the modification of
>   code.
> 
> Changes since v1:
> - Fix comments from Leon about calculation of max_cnt, check for qp's depth
>   and modification of the prints.
> - Optimize logic of codes to make them more readable.
> - Replace dev_err() with ibdev_err().
> 
>  drivers/infiniband/hw/hns/hns_roce_qp.c | 77 ++++++++++++++-------------------
>  1 file changed, 33 insertions(+), 44 deletions(-)

Applied to for-next, thanks

Jason
diff mbox series

Patch

diff --git a/drivers/infiniband/hw/hns/hns_roce_qp.c b/drivers/infiniband/hw/hns/hns_roce_qp.c
index 5a28d62..22d438b 100644
--- a/drivers/infiniband/hw/hns/hns_roce_qp.c
+++ b/drivers/infiniband/hw/hns/hns_roce_qp.c
@@ -359,52 +359,44 @@  static int set_rq_size(struct hns_roce_dev *hr_dev,
 				struct ib_qp_cap *cap, bool is_user, int has_rq,
 				struct hns_roce_qp *hr_qp)
 {
-	struct ib_device *ibdev = &hr_dev->ib_dev;
 	u32 max_cnt;
 
-	/* Check the validity of QP support capacity */
-	if (cap->max_recv_wr > hr_dev->caps.max_wqes ||
-	    cap->max_recv_sge > hr_dev->caps.max_rq_sg) {
-		ibdev_err(ibdev, "Failed to check max recv WR %d and SGE %d\n",
-			  cap->max_recv_wr, cap->max_recv_sge);
-		return -EINVAL;
-	}
-
 	/* If srq exist, set zero for relative number of rq */
 	if (!has_rq) {
 		hr_qp->rq.wqe_cnt = 0;
 		hr_qp->rq.max_gs = 0;
 		cap->max_recv_wr = 0;
 		cap->max_recv_sge = 0;
-	} else {
-		if (is_user && (!cap->max_recv_wr || !cap->max_recv_sge)) {
-			ibdev_err(ibdev, "Failed to check user max recv WR and SGE\n");
-			return -EINVAL;
-		}
 
-		if (hr_dev->caps.min_wqes)
-			max_cnt = max(cap->max_recv_wr, hr_dev->caps.min_wqes);
-		else
-			max_cnt = cap->max_recv_wr;
+		return 0;
+	}
 
-		hr_qp->rq.wqe_cnt = roundup_pow_of_two(max_cnt);
+	/* Check the validity of QP support capacity */
+	if (!cap->max_recv_wr || cap->max_recv_wr > hr_dev->caps.max_wqes ||
+	    cap->max_recv_sge > hr_dev->caps.max_rq_sg) {
+		ibdev_err(&hr_dev->ib_dev, "RQ config error, depth=%u, sge=%d\n",
+			  cap->max_recv_wr, cap->max_recv_sge);
+		return -EINVAL;
+	}
 
-		if ((u32)hr_qp->rq.wqe_cnt > hr_dev->caps.max_wqes) {
-			ibdev_err(ibdev, "Failed to check RQ WQE count limit\n");
-			return -EINVAL;
-		}
+	max_cnt = max(cap->max_recv_wr, hr_dev->caps.min_wqes);
 
-		max_cnt = max(1U, cap->max_recv_sge);
-		hr_qp->rq.max_gs = roundup_pow_of_two(max_cnt);
-		if (hr_dev->caps.max_rq_sg <= HNS_ROCE_SGE_IN_WQE)
-			hr_qp->rq.wqe_shift =
-					ilog2(hr_dev->caps.max_rq_desc_sz);
-		else
-			hr_qp->rq.wqe_shift =
-					ilog2(hr_dev->caps.max_rq_desc_sz
-					      * hr_qp->rq.max_gs);
+	hr_qp->rq.wqe_cnt = roundup_pow_of_two(max_cnt);
+	if ((u32)hr_qp->rq.wqe_cnt > hr_dev->caps.max_wqes) {
+		ibdev_err(&hr_dev->ib_dev, "rq depth %u too large\n",
+			  cap->max_recv_wr);
+		return -EINVAL;
 	}
 
+	max_cnt = max(1U, cap->max_recv_sge);
+	hr_qp->rq.max_gs = roundup_pow_of_two(max_cnt);
+
+	if (hr_dev->caps.max_rq_sg <= HNS_ROCE_SGE_IN_WQE)
+		hr_qp->rq.wqe_shift = ilog2(hr_dev->caps.max_rq_desc_sz);
+	else
+		hr_qp->rq.wqe_shift = ilog2(hr_dev->caps.max_rq_desc_sz *
+					    hr_qp->rq.max_gs);
+
 	cap->max_recv_wr = hr_qp->rq.wqe_cnt;
 	cap->max_recv_sge = hr_qp->rq.max_gs;
 
@@ -637,29 +629,27 @@  static int set_extend_sge_param(struct hns_roce_dev *hr_dev,
 static int set_kernel_sq_size(struct hns_roce_dev *hr_dev,
 			      struct ib_qp_cap *cap, struct hns_roce_qp *hr_qp)
 {
-	struct device *dev = hr_dev->dev;
 	u32 page_size;
 	u32 max_cnt;
 	int size;
 	int ret;
 
-	if (cap->max_send_wr  > hr_dev->caps.max_wqes  ||
+	if (!cap->max_send_wr || cap->max_send_wr > hr_dev->caps.max_wqes ||
 	    cap->max_send_sge > hr_dev->caps.max_sq_sg ||
 	    cap->max_inline_data > hr_dev->caps.max_sq_inline) {
-		dev_err(dev, "SQ WR or sge or inline data error!\n");
+		ibdev_err(&hr_dev->ib_dev,
+			  "SQ WR or sge or inline data error!\n");
 		return -EINVAL;
 	}
 
 	hr_qp->sq.wqe_shift = ilog2(hr_dev->caps.max_sq_desc_sz);
 
-	if (hr_dev->caps.min_wqes)
-		max_cnt = max(cap->max_send_wr, hr_dev->caps.min_wqes);
-	else
-		max_cnt = cap->max_send_wr;
+	max_cnt = max(cap->max_send_wr, hr_dev->caps.min_wqes);
 
 	hr_qp->sq.wqe_cnt = roundup_pow_of_two(max_cnt);
 	if ((u32)hr_qp->sq.wqe_cnt > hr_dev->caps.max_wqes) {
-		dev_err(dev, "while setting kernel sq size, sq.wqe_cnt too large\n");
+		ibdev_err(&hr_dev->ib_dev,
+			  "while setting kernel sq size, sq.wqe_cnt too large\n");
 		return -EINVAL;
 	}
 
@@ -672,7 +662,7 @@  static int set_kernel_sq_size(struct hns_roce_dev *hr_dev,
 
 	ret = set_extend_sge_param(hr_dev, hr_qp);
 	if (ret) {
-		dev_err(dev, "set extend sge parameters fail\n");
+		ibdev_err(&hr_dev->ib_dev, "set extend sge parameters fail\n");
 		return ret;
 	}
 
@@ -1394,11 +1384,10 @@  int hns_roce_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
 		goto out;
 
 	if (cur_state == new_state && cur_state == IB_QPS_RESET) {
-		if (hr_dev->caps.min_wqes) {
+		if (hr_dev->hw_rev == HNS_ROCE_HW_VER1) {
 			ret = -EPERM;
 			ibdev_err(&hr_dev->ib_dev,
-				"cur_state=%d new_state=%d\n", cur_state,
-				new_state);
+				  "RST2RST state is not supported\n");
 		} else {
 			ret = 0;
 		}