![Bill Meier](/assets/img/avatar_default.png)
Change-Id: Id57d264299f2026d703c5b08bace4b24b32f184c Reviewed-on: https://code.wireshark.org/review/4371 Reviewed-by: Bill Meier <wmeier@newsguy.com>
305 lines
10 KiB
C
305 lines
10 KiB
C
/* packet-sdh.c
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* Routines for SDH/SONET encapsulation dissection
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 1998 - 2012 Gerald Combs
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "config.h"
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#include <glib.h>
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#include <epan/packet.h>
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#include <epan/prefs.h>
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#include <wiretap/wtap.h>
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#include "packet-erf.h"
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#define COLUMNS 270
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#define EXT_HDR_TYPE_RAW_LINK 5
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void proto_register_sdh(void);
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void proto_reg_handoff_sdh(void);
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static int proto_sdh = -1;
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static gint ett_sdh = -1;
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static int hf_sdh_a1 = -1;
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static int hf_sdh_a2 = -1;
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static int hf_sdh_j0 = -1;
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static int hf_sdh_b1 = -1;
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static int hf_sdh_e1 = -1;
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static int hf_sdh_f1 = -1;
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static int hf_sdh_d1 = -1;
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static int hf_sdh_d2 = -1;
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static int hf_sdh_d3 = -1;
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static int hf_sdh_au = -1;
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static int hf_sdh_b2 = -1;
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static int hf_sdh_k1 = -1;
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static int hf_sdh_k2 = -1;
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static int hf_sdh_d4 = -1;
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static int hf_sdh_d5 = -1;
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static int hf_sdh_d6 = -1;
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static int hf_sdh_d7 = -1;
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static int hf_sdh_d8 = -1;
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static int hf_sdh_d9 = -1;
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static int hf_sdh_d10 = -1;
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static int hf_sdh_d11 = -1;
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static int hf_sdh_d12 = -1;
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static int hf_sdh_s1 = -1;
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static int hf_sdh_m1 = -1;
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static int hf_sdh_e2 = -1;
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static int hf_sdh_h1 = -1;
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static int hf_sdh_h2 = -1;
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static int hf_sdh_j1 = -1;
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static gint sdh_data_rate = 1;
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static const enum_val_t data_rates[] = {
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{"Attempt to guess", "Attempt to guess", -1},
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{"OC-3", "OC-3", 1},
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{"OC-12", "OC-12", 4},
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{"OC-24", "OC-24", 8},
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{"OC-48", "OC-48", 16},
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{NULL, NULL, -1}
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};
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const value_string sdh_s1_vals[] = {
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{ 0, "Quality unknown" },
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{ 1, "Reserved" },
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{ 2, "Rec G.811" },
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{ 3, "Reserved" },
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{ 4, "SSU-A" },
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{ 5, "Reserved" },
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{ 6, "Reserved" },
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{ 7, "Reserved" },
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{ 8, "SSU-B" },
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{ 9, "Reserved" },
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{ 10, "Reserved" },
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{ 11, "SDH Equipment Source" },
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{ 12, "Reserved" },
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{ 13, "Reserved" },
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{ 14, "Reserved" },
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{ 15, "do not use for sync" },
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{ 0, NULL }
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};
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static int
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get_sdh_level(tvbuff_t *tvb, packet_info *pinfo)
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{
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guint64 *hdr = NULL;
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/*data rate has been set in the SDH options*/
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if(sdh_data_rate != -1) return sdh_data_rate;
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/*ERF specifies data rate*/
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hdr = erf_get_ehdr(pinfo, EXT_HDR_TYPE_RAW_LINK, NULL);
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if (hdr != NULL){
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switch((*hdr & 0xff00) >> 8){
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case 1: /*OC-3*/
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return 1;
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case 2: /*OC-12*/
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return 4;
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case 3: /*OC-48*/
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return 16;
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default: /*drop through and try the next method*/
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;
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}
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}
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/*returns the multiplier for each data level*/
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switch(tvb_reported_length(tvb)){
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case 2430: /*OC-3*/
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return 1;
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case 9720: /*OC-12*/
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return 4;
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case 19440: /*OC-24*/
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return 8;
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case 38880: /*OC-48*/
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return 16;
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}
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return 1;
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}
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static void
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dissect_sdh(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
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{
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col_set_str(pinfo->cinfo, COL_PROTOCOL, "SDH");
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col_clear(pinfo->cinfo,COL_INFO);
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if (tree) {
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proto_tree *sdh_tree;
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proto_item *sdh_item;
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int level = get_sdh_level(tvb, pinfo);
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guint8 h1;
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guint8 h2;
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guint16 au;
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int auoffset;
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sdh_item = proto_tree_add_protocol_format(tree, proto_sdh, tvb, 0, -1, "SDH");
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sdh_tree = proto_item_add_subtree(sdh_item, ett_sdh);
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h1 = tvb_get_guint8(tvb, 0*level+(3*level*COLUMNS));
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h2 = tvb_get_guint8(tvb, 3*level+(3*level*COLUMNS));
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au = (h2 | ((0x03 & h1) << 8));
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proto_tree_add_item(sdh_tree, hf_sdh_a1, tvb, 0*level, 3*level, ENC_NA);
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proto_tree_add_item(sdh_tree, hf_sdh_a2, tvb, 3*level, 3*level, ENC_NA);
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proto_tree_add_item(sdh_tree, hf_sdh_j0, tvb, 6*level, 1, ENC_BIG_ENDIAN);
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proto_tree_add_item(sdh_tree, hf_sdh_b1, tvb, 0*level+(1*level*COLUMNS), 1, ENC_BIG_ENDIAN);
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proto_tree_add_item(sdh_tree, hf_sdh_e1, tvb, 3*level+(1*level*COLUMNS), 1, ENC_BIG_ENDIAN);
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proto_tree_add_item(sdh_tree, hf_sdh_f1, tvb, 6*level+(1*level*COLUMNS), 1, ENC_BIG_ENDIAN);
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proto_tree_add_item(sdh_tree, hf_sdh_d1, tvb, 0*level+(2*level*COLUMNS), 1, ENC_BIG_ENDIAN);
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proto_tree_add_item(sdh_tree, hf_sdh_d2, tvb, 3*level+(2*level*COLUMNS), 1, ENC_BIG_ENDIAN);
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proto_tree_add_item(sdh_tree, hf_sdh_d3, tvb, 6*level+(2*level*COLUMNS), 1, ENC_BIG_ENDIAN);
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proto_tree_add_item(sdh_tree, hf_sdh_h1, tvb, 0*level+(3*level*COLUMNS), 1, ENC_BIG_ENDIAN);
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proto_tree_add_item(sdh_tree, hf_sdh_h2, tvb, 3*level+(3*level*COLUMNS), 1, ENC_BIG_ENDIAN);
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proto_tree_add_uint(sdh_tree, hf_sdh_au, tvb, 0*level+(3*level*COLUMNS), 3*level+1, au);
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proto_tree_add_item(sdh_tree, hf_sdh_b2, tvb, 0*level+(4*level*COLUMNS), 3*level, ENC_NA);
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proto_tree_add_item(sdh_tree, hf_sdh_k1, tvb, 3*level+(4*level*COLUMNS), 1, ENC_BIG_ENDIAN);
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proto_tree_add_item(sdh_tree, hf_sdh_k2, tvb, 6*level+(4*level*COLUMNS), 1, ENC_BIG_ENDIAN);
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proto_tree_add_item(sdh_tree, hf_sdh_d4, tvb, 0*level+(5*level*COLUMNS), 1, ENC_BIG_ENDIAN);
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proto_tree_add_item(sdh_tree, hf_sdh_d5, tvb, 3*level+(5*level*COLUMNS), 1, ENC_BIG_ENDIAN);
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proto_tree_add_item(sdh_tree, hf_sdh_d6, tvb, 6*level+(5*level*COLUMNS), 1, ENC_BIG_ENDIAN);
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proto_tree_add_item(sdh_tree, hf_sdh_d7, tvb, 0*level+(6*level*COLUMNS), 1, ENC_BIG_ENDIAN);
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proto_tree_add_item(sdh_tree, hf_sdh_d8, tvb, 3*level+(6*level*COLUMNS), 1, ENC_BIG_ENDIAN);
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proto_tree_add_item(sdh_tree, hf_sdh_d9, tvb, 6*level+(6*level*COLUMNS), 1, ENC_BIG_ENDIAN);
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proto_tree_add_item(sdh_tree, hf_sdh_d10, tvb, 0*level+(7*level*COLUMNS), 1, ENC_BIG_ENDIAN);
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proto_tree_add_item(sdh_tree, hf_sdh_d11, tvb, 3*level+(7*level*COLUMNS), 1, ENC_BIG_ENDIAN);
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proto_tree_add_item(sdh_tree, hf_sdh_d12, tvb, 6*level+(7*level*COLUMNS), 1, ENC_BIG_ENDIAN);
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proto_tree_add_item(sdh_tree, hf_sdh_s1, tvb, 0*level+(8*level*COLUMNS), 1, ENC_BIG_ENDIAN);
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proto_tree_add_item(sdh_tree, hf_sdh_m1, tvb, 3*level+2+(8*level*COLUMNS), 1, ENC_BIG_ENDIAN);
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proto_tree_add_item(sdh_tree, hf_sdh_e2, tvb, 6*level+(8*level*COLUMNS), 1, ENC_BIG_ENDIAN);
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/*XXX: POH that au points to may not be in the same frame. Also wrong on pointer justification*/
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/*calculate start of SPE by wrapping AU pointer*/
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auoffset = (((9 + 3*COLUMNS) /*start after H3*/ + au*3 + 9*(au/87) /*add extra SOH rows to offset*/) * level) % (COLUMNS*9*level);
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proto_tree_add_item(sdh_tree, hf_sdh_j1, tvb, auoffset, 1, ENC_BIG_ENDIAN);
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}
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}
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void
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proto_register_sdh(void)
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{
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static hf_register_info hf[] = {
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{ &hf_sdh_a1,
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{ "A1", "sdh.a1", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }},
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{ &hf_sdh_a2,
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{ "A2", "sdh.a2", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }},
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{ &hf_sdh_j0,
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{ "J0", "sdh.j0", FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL }},
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{ &hf_sdh_b1,
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{ "B1", "sdh.b1", FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL }},
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{ &hf_sdh_e1,
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{ "E1", "sdh.e1", FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL }},
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{ &hf_sdh_f1,
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{ "F1", "sdh.f1", FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL }},
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{ &hf_sdh_d1,
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{ "D1", "sdh.d1", FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL }},
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{ &hf_sdh_d2,
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{ "D2", "sdh.d2", FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL }},
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{ &hf_sdh_d3,
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{ "D3", "sdh.d3", FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL }},
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{ &hf_sdh_au,
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{ "AU", "sdh.au", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }},
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{ &hf_sdh_b2,
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{ "B2", "sdh.b2", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }},
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{ &hf_sdh_k1,
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{ "K1", "sdh.k1", FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL }},
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{ &hf_sdh_k2,
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{ "K2", "sdh.k2", FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL }},
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{ &hf_sdh_d4,
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{ "D4", "sdh.d4", FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL }},
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{ &hf_sdh_d5,
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{ "D5", "sdh.d5", FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL }},
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{ &hf_sdh_d6,
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{ "D6", "sdh.d6", FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL }},
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{ &hf_sdh_d7,
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{ "D7", "sdh.d7", FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL }},
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{ &hf_sdh_d8,
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{ "D8", "sdh.d8", FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL }},
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{ &hf_sdh_d9,
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{ "D9", "sdh.d9", FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL }},
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{ &hf_sdh_d10,
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{ "D10", "sdh.d10", FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL }},
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{ &hf_sdh_d11,
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{ "D11", "sdh.d11", FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL }},
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{ &hf_sdh_d12,
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{ "D12", "sdh.d12", FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL }},
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{ &hf_sdh_s1,
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{ "S1", "sdh.s1", FT_UINT8, BASE_HEX, VALS(sdh_s1_vals), 0x0, NULL, HFILL }},
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{ &hf_sdh_m1,
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{ "M1", "sdh.m1", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }},
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{ &hf_sdh_e2,
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{ "E2", "sdh.e2", FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL }},
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{ &hf_sdh_j1,
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{ "J1", "sdh.j1", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }},
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{ &hf_sdh_h1,
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{ "H1", "sdh.h1", FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL }},
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{ &hf_sdh_h2,
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{ "H2", "sdh.h2", FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL }},
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};
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static gint *ett[] = {
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&ett_sdh,
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};
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module_t *sdh_module;
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proto_sdh = proto_register_protocol("SDH/SONET Protocol", "SDH", "sdh");
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proto_register_field_array(proto_sdh, hf, array_length(hf));
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proto_register_subtree_array(ett, array_length(ett));
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sdh_module = prefs_register_protocol(proto_sdh, NULL);
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prefs_register_enum_preference(sdh_module, "data.rate",
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"Data rate",
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"Data rate",
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&sdh_data_rate, data_rates, ENC_BIG_ENDIAN);
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register_dissector("sdh", dissect_sdh, proto_sdh);
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}
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void
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proto_reg_handoff_sdh(void)
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{
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dissector_handle_t sdh_handle;
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sdh_handle = find_dissector("sdh");
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dissector_add_uint("wtap_encap", WTAP_ENCAP_SDH, sdh_handle);
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}
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/*
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* Editor modelines - http://www.wireshark.org/tools/modelines.html
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*
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* Local Variables:
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* c-basic-offset: 2
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* tab-width: 8
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* indent-tabs-mode: nil
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* End:
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*
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* ex: set shiftwidth=2 tabstop=8 expandtab:
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* :indentSize=2:tabSize=8:noTabs=true:
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*/
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