From: Lijun Ou <oulijun@huawei.com>
Date: Fri, 29 Sep 2017 23:10:10 +0800
Subject: RDMA/hns: Only assign dest_qp if IB_QP_DEST_QPN bit is set
Patch-mainline: v4.15-rc1
Git-commit: 512f4f1653e63b6efbdccb296b812fa809b7c95c
References: bsc#1104427 FATE#326416
Only when the IB_QP_DEST_QPN flag of attr_mask is set is it valid to
assign the dest_qp_num into the dest_qp field of qp context.
Signed-off-by: Lijun Ou <oulijun@huawei.com>
Signed-off-by: Wei Hu (Xavier) <xavier.huwei@huawei.com>
Signed-off-by: Shaobo Xu <xushaobo2@huawei.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
drivers/infiniband/hw/hns/hns_roce_hw_v1.c | 9 +++++----
1 file changed, 5 insertions(+), 4 deletions(-)
--- a/drivers/infiniband/hw/hns/hns_roce_hw_v1.c
+++ b/drivers/infiniband/hw/hns/hns_roce_hw_v1.c
@@ -2888,10 +2888,11 @@ static int hns_roce_v1_m_qp(struct ib_qp
QP_CONTEXT_QPC_BYTES_32_RESPONDER_RESOURCES_S,
ilog2((unsigned int)attr->max_dest_rd_atomic));
- roce_set_field(context->qpc_bytes_36,
- QP_CONTEXT_QPC_BYTES_36_DEST_QP_M,
- QP_CONTEXT_QPC_BYTES_36_DEST_QP_S,
- attr->dest_qp_num);
+ if (attr_mask & IB_QP_DEST_QPN)
+ roce_set_field(context->qpc_bytes_36,
+ QP_CONTEXT_QPC_BYTES_36_DEST_QP_M,
+ QP_CONTEXT_QPC_BYTES_36_DEST_QP_S,
+ attr->dest_qp_num);
/* Configure GID index */
port_num = rdma_ah_get_port_num(&attr->ah_attr);