extras/multipath/main.h

   1 /*
   2  * Soft:        Description here...
   3  *
   4  * Version:     $Id: main.h,v 0.0.1 2003/09/18 15:13:38 cvaroqui Exp $
   5  *
   6  * Author:      Copyright (C) 2003 Christophe Varoqui
   7  *
   8  *              This program is distributed in the hope that it will be useful,
   9  *              but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  *              MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  11  *              See the GNU General Public License for more details.
  12  *
  13  *              This program is free software; you can redistribute it and/or
  14  *              modify it under the terms of the GNU General Public License
  15  *              as published by the Free Software Foundation; either version
  16  *              2 of the License, or (at your option) any later version.
  17  */
  18
  19 #ifndef _MAIN_H
  20 #define _MAIN_H
  21
  22 /* local includes */
  23 #include "sg_include.h"
  24
  25 /* exerpt from "sg_err.h" */
  26 #define SCSI_CHECK_CONDITION    0x2
  27 #define SCSI_COMMAND_TERMINATED 0x22
  28 #define SG_ERR_DRIVER_SENSE     0x08
  29
  30 /* exerpt from "scsi.h" */
  31 #define SCSI_IOCTL_GET_IDLUN            0x5382
  32 #define SCSI_IOCTL_GET_BUS_NUMBER       0x5386
  33
  34 /* global defs */
  35 #define WWID_SIZE       33
  36 #define SERIAL_SIZE     14
  37 #define MAX_DEVS        128
  38 #define MAX_MP          MAX_DEVS / 2
  39 #define MAX_MP_PATHS    MAX_DEVS / 4
  40 #define FILE_NAME_SIZE  256
  41 #define DEF_TIMEOUT     60000
  42 #define EBUFF_SZ        256
  43 #define TUR_CMD_LEN     6
  44 #define DM_TARGET       "multipath"
  45
  46 /* Storage controlers cpabilities */
  47 #define FAILOVER        0
  48 #define MULTIBUS        1
  49 #define GROUP_BY_SERIAL 2
  50
  51 #define PINDEX(x,y)     mp[(x)].pindex[(y)]
  52
  53 /* global types */
  54 struct scsi_idlun {
  55         int dev_id;
  56         int host_unique_id;
  57         int host_no;
  58 };
  59
  60 struct sg_id {
  61         int host_no;
  62         int channel;
  63         int scsi_id;
  64         int lun;
  65         int scsi_type;
  66         short h_cmd_per_lun;
  67         short d_queue_depth;
  68         int unused1;
  69         int unused2;
  70 };
  71
  72 struct scsi_dev {
  73         char dev[FILE_NAME_SIZE];
  74         struct scsi_idlun scsi_id;
  75         int host_no;
  76 };
  77
  78 struct path {
  79         char dev[FILE_NAME_SIZE];
  80         char sg_dev[FILE_NAME_SIZE];
  81         struct scsi_idlun scsi_id;
  82         struct sg_id sg_id;
  83         char wwid[WWID_SIZE];
  84         char vendor_id[8];
  85         char product_id[16];
  86         char rev[4];
  87         char serial[SERIAL_SIZE];
  88         int iopolicy;
  89 };
  90
  91 struct multipath {
  92         char wwid[WWID_SIZE];
  93         int npaths;
  94         long size;
  95         int pindex[MAX_MP_PATHS];
  96 };
  97
  98 struct env {
  99         int max_devs;
 100         int verbose;
 101         int quiet;
 102         int dry_run;
 103         int iopolicy;
 104         int with_sysfs;
 105         char sysfs_path[FILE_NAME_SIZE];
 106         char hotplugdev[FILE_NAME_SIZE];
 107 };
 108
 109 /* Build version */
 110 #define PROG    "multipath"
 111
 112 #define VERSION_CODE 0x000012
 113 #define DATE_CODE    0x021504
 114
 115 #define MULTIPATH_VERSION(version)      \
 116         (version >> 16) & 0xFF,         \
 117         (version >> 8) & 0xFF,          \
 118         version & 0xFF
 119
 120 #define VERSION_STRING PROG" v%d.%d.%d (%.2d/%.2d, 20%.2d)\n",  \
 121                 MULTIPATH_VERSION(VERSION_CODE),                \
 122                 MULTIPATH_VERSION(DATE_CODE)
 123
 124 #endif