RDMA/hns: Add verification of QP type when post_recv

The post_recv only supports QP types of RC, GSI and UD.

Link: https://lore.kernel.org/r/1611997090-48820-13-git-send-email-liweihang@huawei.comSigned-off-by: NWenpeng Liang <liangwenpeng@huawei.com>
Signed-off-by: NWeihang Li <liweihang@huawei.com>
Signed-off-by: NJason Gunthorpe <jgg@nvidia.com>

drivers/infiniband/hw/hns/hns_roce_hw_v2.c

@@ -721,9 +721,21 @@ static int hns_roce_v2_post_send(struct ib_qp *ibqp,
 static int check_recv_valid(struct hns_roce_dev *hr_dev,
 			    struct hns_roce_qp *hr_qp)
 {
+	struct ib_device *ibdev = &hr_dev->ib_dev;
+	struct ib_qp *ibqp = &hr_qp->ibqp;
+
+	if (unlikely(ibqp->qp_type != IB_QPT_RC &&
+		     ibqp->qp_type != IB_QPT_GSI &&
+		     ibqp->qp_type != IB_QPT_UD)) {
+		ibdev_err(ibdev, "unsupported qp type, qp_type = %d.\n",
+			  ibqp->qp_type);
+		return -EOPNOTSUPP;
+	}
+
 	if (unlikely(hr_dev->state >= HNS_ROCE_DEVICE_STATE_RST_DOWN))
 		return -EIO;
-	else if (hr_qp->state == IB_QPS_RESET)
+
+	if (hr_qp->state == IB_QPS_RESET)
 		return -EINVAL;
 
 	return 0;