RDMA/hns: Intercept illegal RDMA operation when use inline data

[ Upstream commit 328d405b3d4c8dd1f06bfd77f498e23281ae348c ]

RDMA read operation is not supported inline data. If user cofigures
issue a RDMA read and use inline data, it will happen a hardware
error.

Signed-off-by: Lijun Ou <oulijun@huawei.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
index ec638778661ccd7aadecb857bfdb9b8e59929524..3d5141fad708078dee1918f98b97dce61f0a418c 100644 (file)
--- a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
+++ b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
@@ -71,6 +71,11 @@ static int set_rwqe_data_seg(struct ib_qp *ibqp, struct ib_send_wr *wr,
                        return -EINVAL;
                }
 
+               if (wr->opcode == IB_WR_RDMA_READ) {
+                       dev_err(hr_dev->dev, "Not support inline data!\n");
+                       return -EINVAL;
+               }
+
                for (i = 0; i < wr->num_sge; i++) {
                        memcpy(wqe, ((void *)wr->sg_list[i].addr),
                               wr->sg_list[i].length);