Commit 67a8695a authored Jan 17, 2022 by Junxian Huang Committed by Zheng Zengkai Jan 17, 2022

RDMA/hns: Bugfix for the missing assignment for dip_idx

mainline inclusion
from mainline-v5.15-rc1
commit 074f315f
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I4QOTS
CVE: NA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma.git/commit/?id=074f315fc54a9ce45559a44ca36d9fa1ee1ea2cd

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When the dgid-dip_idx mapping relationship exists, dip should be assigned.

Fixes: f91696f2 ("RDMA/hns: Support congestion control type selection according to the FW")
Link: https://lore.kernel.org/r/1629884592-23424-3-git-send-email-liangwenpeng@huawei.com


Signed-off-by: Junxian Huang <huangjunxian4@hisilicon.com>
Signed-off-by: Wenpeng Liang <liangwenpeng@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
sigend-off-by: Guofeng Yue <yueguofeng@hisilicon.com>

Reviewed-by: Yangyang Li <liyangyang20@huawei.com>
Acked-by: Xie XiuQi <xiexiuqi@huawei.com>
Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com>

parent 5fee4bf3

drivers/infiniband/hw/hns/hns_roce_hw_v2.c

+3 −1

Original line number	Diff line number	Diff line
		@@ -4500,9 +4500,11 @@ static int get_dip_ctx_idx(struct ib_qp ibqp, const struct ib_qp_attr attr,
		spin_lock_irqsave(&hr_dev->dip_list_lock, flags);

		list_for_each_entry(hr_dip, &hr_dev->dip_list, node) {
		if (!memcmp(grh->dgid.raw, hr_dip->dgid, 16))
		if (!memcmp(grh->dgid.raw, hr_dip->dgid, 16)) {
		*dip_idx = hr_dip->dip_idx;
		goto out;
		}
		}

		/* If no dgid is found, a new dip and a mapping between dgid and
		* dip_idx will be created.