drivers/infiniband/include/ib_user_mad.h

   1 /*
   2  * Copyright (c) 2004 Topspin Communications.  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  * $Id: ib_user_mad.h 1389 2004-12-27 22:56:47Z roland $
  33  */
  34
  35 #ifndef IB_USER_MAD_H
  36 #define IB_USER_MAD_H
  37
  38 #include <linux/types.h>
  39 #include <linux/ioctl.h>
  40
  41 /*
  42  * Increment this value if any changes that break userspace ABI
  43  * compatibility are made.
  44  */
  45 #define IB_USER_MAD_ABI_VERSION 2
  46
  47 /*
  48  * Make sure that all structs defined in this file remain laid out so
  49  * that they pack the same way on 32-bit and 64-bit architectures (to
  50  * avoid incompatibility between 32-bit userspace and 64-bit kernels).
  51  */
  52
  53 /**
  54  * ib_user_mad - MAD packet
  55  * @data - Contents of MAD
  56  * @id - ID of agent MAD received with/to be sent with
  57  * @status - 0 on successful receive, ETIMEDOUT if no response
  58  *   received (transaction ID in data[] will be set to TID of original
  59  *   request) (ignored on send)
  60  * @timeout_ms - Milliseconds to wait for response (unset on receive)
  61  * @qpn - Remote QP number received from/to be sent to
  62  * @qkey - Remote Q_Key to be sent with (unset on receive)
  63  * @lid - Remote lid received from/to be sent to
  64  * @sl - Service level received with/to be sent with
  65  * @path_bits - Local path bits received with/to be sent with
  66  * @grh_present - If set, GRH was received/should be sent
  67  * @gid_index - Local GID index to send with (unset on receive)
  68  * @hop_limit - Hop limit in GRH
  69  * @traffic_class - Traffic class in GRH
  70  * @gid - Remote GID in GRH
  71  * @flow_label - Flow label in GRH
  72  *
  73  * All multi-byte quantities are stored in network (big endian) byte order.
  74  */
  75 struct ib_user_mad {
  76         __u8    data[256];
  77         __u32   id;
  78         __u32   status;
  79         __u32   timeout_ms;
  80         __u32   qpn;
  81         __u32   qkey;
  82         __u16   lid;
  83         __u8    sl;
  84         __u8    path_bits;
  85         __u8    grh_present;
  86         __u8    gid_index;
  87         __u8    hop_limit;
  88         __u8    traffic_class;
  89         __u8    gid[16];
  90         __u32   flow_label;
  91 };
  92
  93 /**
  94  * ib_user_mad_reg_req - MAD registration request
  95  * @id - Set by the kernel; used to identify agent in future requests.
  96  * @qpn - Queue pair number; must be 0 or 1.
  97  * @method_mask - The caller will receive unsolicited MADs for any method
  98  *   where @method_mask = 1.
  99  * @mgmt_class - Indicates which management class of MADs should be receive
 100  *   by the caller.  This field is only required if the user wishes to
 101  *   receive unsolicited MADs, otherwise it should be 0.
 102  * @mgmt_class_version - Indicates which version of MADs for the given
 103  *   management class to receive.
 104  * @oui: Indicates IEEE OUI when mgmt_class is a vendor class
 105  *   in the range from 0x30 to 0x4f. Otherwise not used.
 106  */
 107 struct ib_user_mad_reg_req {
 108         __u32   id;
 109         __u32   method_mask[4];
 110         __u8    qpn;
 111         __u8    mgmt_class;
 112         __u8    mgmt_class_version;
 113         __u8    oui[3];
 114 };
 115
 116 #define IB_IOCTL_MAGIC          0x1b
 117
 118 #define IB_USER_MAD_REGISTER_AGENT      _IOWR(IB_IOCTL_MAGIC, 1, \
 119                                               struct ib_user_mad_reg_req)
 120
 121 #define IB_USER_MAD_UNREGISTER_AGENT    _IOW(IB_IOCTL_MAGIC, 2, __u32)
 122
 123 #endif /* IB_USER_MAD_H */