4.16-stable review patch. If anyone has any objections, please let me know.
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From: oulijun oulijun@huawei.com
[ 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 --- drivers/infiniband/hw/hns/hns_roce_hw_v2.c | 5 +++++ 1 file changed, 5 insertions(+)
--- 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_q 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);