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

BugLink: https://bugs.launchpad.net/bugs/1770974
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>
(cherry picked from commit 328d405b3d4c8dd1f06bfd77f498e23281ae348c)
Signed-off-by: dann frazier <dann.frazier@canonical.com>
Acked-by: Kleber Sacilotto de Souza <kleber.souza@canonical.com>
Acked-by: Stefan Bader <stefan.bader@canonical.com>
Signed-off-by: Khalid Elmously <khalid.elmously@canonical.com>

diff --git a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
index 58228d6e2da75911a8271b573a3d39dd26e27f51..1fad8cf949075b25cbb3ed0991e906ac787efa80 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);