drivers/infiniband/ulp/srpt/ib_dm_mad.h

   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