1  /*
2   * Copyright (c) 2006 - 2009 Mellanox Technology Inc.  All rights reserved.
3   *
4   * This software is available to you under a choice of one of two
5   * licenses.  You may choose to be licensed under the terms of the GNU
6   * General Public License (GPL) Version 2, available from the file
7   * COPYING in the main directory of this source tree, or the
8   * OpenIB.org BSD license below:
9   *
10   *     Redistribution and use in source and binary forms, with or
11   *     without modification, are permitted provided that the following
12   *     conditions are met:
13   *
14   *      - Redistributions of source code must retain the above
15   *        copyright notice, this list of conditions and the following
16   *        disclaimer.
17   *
18   *      - Redistributions in binary form must reproduce the above
19   *        copyright notice, this list of conditions and the following
20   *        disclaimer in the documentation and/or other materials
21   *        provided with the distribution.
22   *
23   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24   * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25   * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26   * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
27   * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
28   * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
29   * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
30   * SOFTWARE.
31   *
32   */
33  
34  #ifndef IB_DM_MAD_H
35  #define IB_DM_MAD_H
36  
37  #include <linux/types.h>
38  
39  #include <rdma/ib_mad.h>
40  
41  enum {
42  	/*
43  	 * See also section 13.4.7 Status Field, table 115 MAD Common Status
44  	 * Field Bit Values and also section 16.3.1.1 Status Field in the
45  	 * InfiniBand Architecture Specification.
46  	 */
47  	DM_MAD_STATUS_UNSUP_METHOD = 0x0008,
48  	DM_MAD_STATUS_UNSUP_METHOD_ATTR = 0x000c,
49  	DM_MAD_STATUS_INVALID_FIELD = 0x001c,
50  	DM_MAD_STATUS_NO_IOC = 0x0100,
51  
52  	/*
53  	 * See also the Device Management chapter, section 16.3.3 Attributes,
54  	 * table 279 Device Management Attributes in the InfiniBand
55  	 * Architecture Specification.
56  	 */
57  	DM_ATTR_CLASS_PORT_INFO = 0x01,
58  	DM_ATTR_IOU_INFO = 0x10,
59  	DM_ATTR_IOC_PROFILE = 0x11,
60  	DM_ATTR_SVC_ENTRIES = 0x12
61  };
62  
63  struct ib_dm_hdr {
64  	u8 reserved[28];
65  };
66  
67  /*
68   * Structure of management datagram sent by the SRP target implementation.
69   * Contains a management datagram header, reliable multi-packet transaction
70   * protocol (RMPP) header and ib_dm_hdr. Notes:
71   * - The SRP target implementation does not use RMPP or ib_dm_hdr when sending
72   *   management datagrams.
73   * - The header size must be exactly 64 bytes (IB_MGMT_DEVICE_HDR), since this
74   *   is the header size that is passed to ib_create_send_mad() in ib_srpt.c.
75   * - The maximum supported size for a management datagram when not using RMPP
76   *   is 256 bytes -- 64 bytes header and 192 (IB_MGMT_DEVICE_DATA) bytes data.
77   */
78  struct ib_dm_mad {
79  	struct ib_mad_hdr mad_hdr;
80  	struct ib_rmpp_hdr rmpp_hdr;
81  	struct ib_dm_hdr dm_hdr;
82  	u8 data[IB_MGMT_DEVICE_DATA];
83  };
84  
85  /*
86   * IOUnitInfo as defined in section 16.3.3.3 IOUnitInfo of the InfiniBand
87   * Architecture Specification.
88   */
89  struct ib_dm_iou_info {
90  	__be16 change_id;
91  	u8 max_controllers;
92  	u8 op_rom;
93  	u8 controller_list[128];
94  };
95  
96  /*
97   * IOControllerprofile as defined in section 16.3.3.4 IOControllerProfile of
98   * the InfiniBand Architecture Specification.
99   */
100  struct ib_dm_ioc_profile {
101  	__be64 guid;
102  	__be32 vendor_id;
103  	__be32 device_id;
104  	__be16 device_version;
105  	__be16 reserved1;
106  	__be32 subsys_vendor_id;
107  	__be32 subsys_device_id;
108  	__be16 io_class;
109  	__be16 io_subclass;
110  	__be16 protocol;
111  	__be16 protocol_version;
112  	__be16 service_conn;
113  	__be16 initiators_supported;
114  	__be16 send_queue_depth;
115  	u8 reserved2;
116  	u8 rdma_read_depth;
117  	__be32 send_size;
118  	__be32 rdma_size;
119  	u8 op_cap_mask;
120  	u8 svc_cap_mask;
121  	u8 num_svc_entries;
122  	u8 reserved3[9];
123  	u8 id_string[64];
124  };
125  
126  struct ib_dm_svc_entry {
127  	u8 name[40];
128  	__be64 id;
129  };
130  
131  /*
132   * See also section 16.3.3.5 ServiceEntries in the InfiniBand Architecture
133   * Specification. See also section B.7, table B.8 in the T10 SRP r16a document.
134   */
135  struct ib_dm_svc_entries {
136  	struct ib_dm_svc_entry service_entries[4];
137  };
138  
139  #endif
140