epan/dissectors/packet-isis-lsp.h

   1 /* packet-isis-lsp.h
   2  * Defines and such for LSP and their CLV decodes
   3  *
   4  * $Id$
   5  * Stuart Stanley <stuarts@mxmail.net>
   6  *
   7  * Wireshark - Network traffic analyzer
   8  * By Gerald Combs <gerald@wireshark.org>
   9  * Copyright 1998 Gerald Combs
  10  *
  11  * This program is free software; you can redistribute it and/or
  12  * modify it under the terms of the GNU General Public License
  13  * as published by the Free Software Foundation; either version 2
  14  * of the License, or (at your option) any later version.
  15  *
  16  * This program is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19  * GNU General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU General Public License
  22  * along with this program; if not, write to the Free Software
  23  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  24  */
  25
  26 #ifndef _PACKET_ISIS_LSP_H
  27 #define _PACKET_ISIS_LSP_H
  28
  29 /*
  30  * Declarations for L1/L2 LSP base header.
  31  */
  32
  33 /* P | ATT | HIPPITY | DS FIELD description */
  34 #define ISIS_LSP_PARTITION_MASK     0x80
  35 #define ISIS_LSP_PARTITION_SHIFT    7
  36 #define ISIS_LSP_PARTITION(info)    (((info) & ISIS_LSP_PARTITION_MASK) >> ISIS_LSP_PARTITION_SHIFT)
  37
  38 #define ISIS_LSP_ATT_MASK     0x78
  39 #define ISIS_LSP_ATT_SHIFT    3
  40 #define ISIS_LSP_ATT(info)    (((info) & ISIS_LSP_ATT_MASK) >> ISIS_LSP_ATT_SHIFT)
  41
  42 #define ISIS_LSP_ATT_ERROR(info)   ((info) >> 3)
  43 #define ISIS_LSP_ATT_EXPENSE(info) (((info) >> 2) & 1)
  44 #define ISIS_LSP_ATT_DELAY(info)   (((info) >> 1) & 1)
  45 #define ISIS_LSP_ATT_DEFAULT(info) ((info) & 1)
  46
  47 #define ISIS_LSP_HIPPITY_MASK     0x04
  48 #define ISIS_LSP_HIPPITY_SHIFT    2
  49 #define ISIS_LSP_HIPPITY(info)    (((info) & ISIS_LSP_HIPPITY_MASK) >> ISIS_LSP_HIPPITY_SHIFT)
  50
  51 #define ISIS_LSP_IS_TYPE_MASK     0x03
  52 #define ISIS_LSP_IS_TYPE(info)    ((info) & ISIS_LSP_IS_TYPE_MASK)
  53
  54 #define ISIS_LSP_MT_MSHIP_RES_MASK    4
  55 #define ISIS_LSP_MT_MSHIP_RES_SHIFT   12
  56 #define ISIS_LSP_MT_MSHIP_RES(info)  (((info) >> ISIS_LSP_MT_MSHIP_RES_SHIFT) & ISIS_LSP_MT_MSHIP_RES_MASK)
  57
  58 #define ISIS_LSP_MT_MSHIP_ID_MASK   0x0FFF
  59 #define ISIS_LSP_MT_MSHIP_ID(info)  ((info) & ISIS_LSP_MT_MSHIP_ID_MASK)
  60
  61
  62 #define ISIS_LSP_TYPE_UNUSED0           0
  63 #define ISIS_LSP_TYPE_LEVEL_1           1
  64 #define ISIS_LSP_TYPE_UNUSED2           2
  65 #define ISIS_LSP_TYPE_LEVEL_2           3
  66
  67 #define ISIS_LSP_ATTACHED_NONE    0
  68 #define ISIS_LSP_ATTACHED_DEFAULT 1
  69 #define ISIS_LSP_ATTACHED_DELAY   2
  70 #define ISIS_LSP_ATTACHED_EXPENSE 4
  71 #define ISIS_LSP_ATTACHED_ERROR   8
  72
  73
  74 #define ISIS_LSP_CLV_METRIC_SUPPORTED(x)        ((x)&0x80)
  75 #define ISIS_LSP_CLV_METRIC_IE(x)               ((x)&0x40)
  76 #define ISIS_LSP_CLV_METRIC_RESERVED(x)         ((x)&0x40)
  77 #define ISIS_LSP_CLV_METRIC_UPDOWN(x)           ((x)&0x80)
  78 #define ISIS_LSP_CLV_METRIC_VALUE(x)            ((x)&0x3f)
  79
  80 /*
  81  * Published API functions.  NOTE, this are "local" API functions and
  82  * are only valid from with isis decodes.
  83  */
  84 extern void isis_dissect_isis_lsp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree,
  85         int offset, int hello_type, int header_length, int id_length);
  86 extern void isis_register_lsp(int proto_isis);
  87
  88 #endif /* _PACKET_ISIS_LSP_H */