| /* |
| * Copyright (c) 2013-2015, Mellanox Technologies. All rights reserved. |
| * |
| * This software is available to you under a choice of one of two |
| * licenses. You may choose to be licensed under the terms of the GNU |
| * General Public License (GPL) Version 2, available from the file |
| * COPYING in the main directory of this source tree, or the |
| * OpenIB.org BSD license below: |
| * |
| * Redistribution and use in source and binary forms, with or |
| * without modification, are permitted provided that the following |
| * conditions are met: |
| * |
| * - Redistributions of source code must retain the above |
| * copyright notice, this list of conditions and the following |
| * disclaimer. |
| * |
| * - Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following |
| * disclaimer in the documentation and/or other materials |
| * provided with the distribution. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
| * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS |
| * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN |
| * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
| * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| * SOFTWARE. |
| */ |
| |
| #include <linux/mlx5/cmd.h> |
| #include <rdma/ib_mad.h> |
| #include <rdma/ib_smi.h> |
| #include "mlx5_ib.h" |
| |
| enum { |
| MLX5_IB_VENDOR_CLASS1 = 0x9, |
| MLX5_IB_VENDOR_CLASS2 = 0xa |
| }; |
| |
| int mlx5_MAD_IFC(struct mlx5_ib_dev *dev, int ignore_mkey, int ignore_bkey, |
| u8 port, struct ib_wc *in_wc, struct ib_grh *in_grh, |
| void *in_mad, void *response_mad) |
| { |
| u8 op_modifier = 0; |
| |
| /* Key check traps can't be generated unless we have in_wc to |
| * tell us where to send the trap. |
| */ |
| if (ignore_mkey || !in_wc) |
| op_modifier |= 0x1; |
| if (ignore_bkey || !in_wc) |
| op_modifier |= 0x2; |
| |
| return mlx5_core_mad_ifc(dev->mdev, in_mad, response_mad, op_modifier, port); |
| } |
| |
| int mlx5_ib_process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num, |
| struct ib_wc *in_wc, struct ib_grh *in_grh, |
| struct ib_mad *in_mad, struct ib_mad *out_mad) |
| { |
| u16 slid; |
| int err; |
| |
| slid = in_wc ? in_wc->slid : be16_to_cpu(IB_LID_PERMISSIVE); |
| |
| if (in_mad->mad_hdr.method == IB_MGMT_METHOD_TRAP && slid == 0) |
| return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED; |
| |
| if (in_mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_SUBN_LID_ROUTED || |
| in_mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE) { |
| if (in_mad->mad_hdr.method != IB_MGMT_METHOD_GET && |
| in_mad->mad_hdr.method != IB_MGMT_METHOD_SET && |
| in_mad->mad_hdr.method != IB_MGMT_METHOD_TRAP_REPRESS) |
| return IB_MAD_RESULT_SUCCESS; |
| |
| /* Don't process SMInfo queries -- the SMA can't handle them. |
| */ |
| if (in_mad->mad_hdr.attr_id == IB_SMP_ATTR_SM_INFO) |
| return IB_MAD_RESULT_SUCCESS; |
| } else if (in_mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_PERF_MGMT || |
| in_mad->mad_hdr.mgmt_class == MLX5_IB_VENDOR_CLASS1 || |
| in_mad->mad_hdr.mgmt_class == MLX5_IB_VENDOR_CLASS2 || |
| in_mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_CONG_MGMT) { |
| if (in_mad->mad_hdr.method != IB_MGMT_METHOD_GET && |
| in_mad->mad_hdr.method != IB_MGMT_METHOD_SET) |
| return IB_MAD_RESULT_SUCCESS; |
| } else { |
| return IB_MAD_RESULT_SUCCESS; |
| } |
| |
| err = mlx5_MAD_IFC(to_mdev(ibdev), |
| mad_flags & IB_MAD_IGNORE_MKEY, |
| mad_flags & IB_MAD_IGNORE_BKEY, |
| port_num, in_wc, in_grh, in_mad, out_mad); |
| if (err) |
| return IB_MAD_RESULT_FAILURE; |
| |
| /* set return bit in status of directed route responses */ |
| if (in_mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE) |
| out_mad->mad_hdr.status |= cpu_to_be16(1 << 15); |
| |
| if (in_mad->mad_hdr.method == IB_MGMT_METHOD_TRAP_REPRESS) |
| /* no response for trap repress */ |
| return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED; |
| |
| return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY; |
| } |
| |
| int mlx5_query_ext_port_caps(struct mlx5_ib_dev *dev, u8 port) |
| { |
| struct ib_smp *in_mad = NULL; |
| struct ib_smp *out_mad = NULL; |
| int err = -ENOMEM; |
| u16 packet_error; |
| |
| in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL); |
| out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL); |
| if (!in_mad || !out_mad) |
| goto out; |
| |
| init_query_mad(in_mad); |
| in_mad->attr_id = MLX5_ATTR_EXTENDED_PORT_INFO; |
| in_mad->attr_mod = cpu_to_be32(port); |
| |
| err = mlx5_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad); |
| |
| packet_error = be16_to_cpu(out_mad->status); |
| |
| dev->mdev->caps.gen.ext_port_cap[port - 1] = (!err && !packet_error) ? |
| MLX_EXT_PORT_CAP_FLAG_EXTENDED_PORT_INFO : 0; |
| |
| out: |
| kfree(in_mad); |
| kfree(out_mad); |
| return err; |
| } |