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RDMA/hns: Fix querying wrong SCC context for DIP algorithm

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When using DIP algorithm, all QPs establishing connections with
the same destination IP share the same SCC, which is indexed by
dip_idx, but dip_idx isn't necessarily equal to qpn. Therefore,
dip_idx should be used to query SCC context instead of qpn.

Fixes: 124a9fbe43 ("RDMA/hns: Append SCC context to the raw dump of QPC")
Signed-off-by: wenglianfa <wenglianfa@huawei.com>
Signed-off-by: Junxian Huang <huangjunxian6@hisilicon.com>
Link: https://patch.msgid.link/20250726075345.846957-1-huangjunxian6@hisilicon.com
Reviewed-by: Zhu Yanjun <yanjun.zhu@linux.dev>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
This commit is contained in:
wenglianfa 2025-07-26 15:53:45 +08:00 committed by Leon Romanovsky
parent d4ac86b475
commit 085a1b42e5
2 changed files with 10 additions and 3 deletions
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4
drivers/infiniband/hw/hns/hns_roce_hw_v2.c
View File

@ -5476,7 +5476,7 @@ out:
return ret;
}
static int hns_roce_v2_query_sccc(struct hns_roce_dev *hr_dev, u32 qpn,
static int hns_roce_v2_query_sccc(struct hns_roce_dev *hr_dev, u32 sccn,
void *buffer)
{
struct hns_roce_v2_scc_context *context;
@ -5488,7 +5488,7 @@ static int hns_roce_v2_query_sccc(struct hns_roce_dev *hr_dev, u32 qpn,
return PTR_ERR(mailbox);
ret = hns_roce_cmd_mbox(hr_dev, 0, mailbox->dma, HNS_ROCE_CMD_QUERY_SCCC,
qpn);
sccn);
if (ret)
goto out;

9
drivers/infiniband/hw/hns/hns_roce_restrack.c
View File

@ -100,6 +100,7 @@ int hns_roce_fill_res_qp_entry_raw(struct sk_buff *msg, struct ib_qp *ib_qp)
struct hns_roce_v2_qp_context qpc;
struct hns_roce_v2_scc_context sccc;
} context = {};
u32 sccn = hr_qp->qpn;
int ret;
if (!hr_dev->hw->query_qpc)
@ -116,7 +117,13 @@ int hns_roce_fill_res_qp_entry_raw(struct sk_buff *msg, struct ib_qp *ib_qp)
!hr_dev->hw->query_sccc)
goto out;
ret = hr_dev->hw->query_sccc(hr_dev, hr_qp->qpn, &context.sccc);
if (hr_qp->cong_type == CONG_TYPE_DIP) {
if (!hr_qp->dip)
goto out;
sccn = hr_qp->dip->dip_idx;
}
ret = hr_dev->hw->query_sccc(hr_dev, sccn, &context.sccc);
if (ret)
ibdev_warn_ratelimited(&hr_dev->ib_dev,
"failed to query SCCC, ret = %d.\n",