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