LXR linux/drivers/infiniband/ulp/srpt/ib_dm

   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
  41enum {
  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
  63struct 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 */
  78struct 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 */
  89struct 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 */
 100struct 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
 126struct 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 */
 135struct ib_dm_svc_entries {
 136        struct ib_dm_svc_entry service_entries[4];
 137};
 138
 139#endif
 140