/* packet-dvb-s2-bb.c * Routines for DVB Dynamic Mode Adaptation dissection * refer to * https://web.archive.org/web/20170226064346/http://satlabs.org/pdf/sl_561_Mode_Adaptation_Input_and_Output_Interfaces_for_DVB-S2_Equipment_v1.3.pdf * * (http://satlabs.org/pdf/sl_561_Mode_Adaptation_Input_and_Output_Interfaces_for_DVB-S2_Equipment_v1.3.pdf * is no longer available) * * Standards: * ETSI EN 302 307 - Digital Video Broadcasting (DVB) - Framing Structure * ETSI TS 102 606-1 - Digital Video Broadcasting (DVB) - Generic Stream Encapsulation (GSE) Part 1: Protocol * ETSI TS 102 771 - Digital Video Broadcasting (DVB) - GSE implementation guidelines * SatLabs sl_561 - Mode Adaptation Interfaces for DVB-S2 equipment * ETSI EN 301 545 - Digital Video Broadcasting (DVB) - Second Generation DVB Interactive Satellite System (DVB-RCS2) * RFC 4326 - Unidirectional Lightweight Encapsulation (ULE) for Transmission of IP Datagrams over an MPEG-2 Transport Stream (TS) * IANA registries: * * Mandatory Extension Headers (or link-dependent type fields) for ULE (Range 0-255 decimal): * * https://www.iana.org/assignments/ule-next-headers/ule-next-headers.xhtml#ule-next-headers-1 * * and * * Optional Extension Headers for ULE (Range 256-511 decimal): * * https://www.iana.org/assignments/ule-next-headers/ule-next-headers.xhtml#ule-next-headers-2 * * Copyright 2012, Tobias Rutz * Copyright 2013-2020, Thales Alenia Space * Copyright 2013-2020, Viveris Technologies * * Wireshark - Network traffic analyzer * By Gerald Combs * Copyright 1998 Gerald Combs * * SPDX-License-Identifier: GPL-2.0-or-later */ #include "config.h" #include #include #include #include #include #define BIT_IS_SET(var, bit) ((var) & (1 << (bit))) #define BIT_IS_CLEAR(var, bit) !BIT_IS_SET(var, bit) #define DVB_S2_MODEADAPT_MINSIZE (DVB_S2_BB_OFFS_CRC + 1) /* Types of mode adaptation headers supported. */ #define DVB_S2_MODEADAPT_TYPE_L1 1 #define DVB_S2_MODEADAPT_TYPE_L2 2 #define DVB_S2_MODEADAPT_TYPE_L3 3 #define DVB_S2_MODEADAPT_TYPE_L4 4 #define DVB_S2_MODEADAPT_L1SIZE 0 #define DVB_S2_MODEADAPT_L2SIZE 2 #define DVB_S2_MODEADAPT_L3SIZE 4 #define DVB_S2_MODEADAPT_L4SIZE 3 /* CRC table crc-8, poly=0xD5 */ static guint8 crc8_table[256] = { 0x00, 0xD5, 0x7F, 0xAA, 0xFE, 0x2B, 0x81, 0x54, 0x29, 0xFC, 0x56, 0x83, 0xD7, 0x02, 0xA8, 0x7D, 0x52, 0x87, 0x2D, 0xF8, 0xAC, 0x79, 0xD3, 0x06, 0x7B, 0xAE, 0x04, 0xD1, 0x85, 0x50, 0xFA, 0x2F, 0xA4, 0x71, 0xDB, 0x0E, 0x5A, 0x8F, 0x25, 0xF0, 0x8D, 0x58, 0xF2, 0x27, 0x73, 0xA6, 0x0C, 0xD9, 0xF6, 0x23, 0x89, 0x5C, 0x08, 0xDD, 0x77, 0xA2, 0xDF, 0x0A, 0xA0, 0x75, 0x21, 0xF4, 0x5E, 0x8B, 0x9D, 0x48, 0xE2, 0x37, 0x63, 0xB6, 0x1C, 0xC9, 0xB4, 0x61, 0xCB, 0x1E, 0x4A, 0x9F, 0x35, 0xE0, 0xCF, 0x1A, 0xB0, 0x65, 0x31, 0xE4, 0x4E, 0x9B, 0xE6, 0x33, 0x99, 0x4C, 0x18, 0xCD, 0x67, 0xB2, 0x39, 0xEC, 0x46, 0x93, 0xC7, 0x12, 0xB8, 0x6D, 0x10, 0xC5, 0x6F, 0xBA, 0xEE, 0x3B, 0x91, 0x44, 0x6B, 0xBE, 0x14, 0xC1, 0x95, 0x40, 0xEA, 0x3F, 0x42, 0x97, 0x3D, 0xE8, 0xBC, 0x69, 0xC3, 0x16, 0xEF, 0x3A, 0x90, 0x45, 0x11, 0xC4, 0x6E, 0xBB, 0xC6, 0x13, 0xB9, 0x6C, 0x38, 0xED, 0x47, 0x92, 0xBD, 0x68, 0xC2, 0x17, 0x43, 0x96, 0x3C, 0xE9, 0x94, 0x41, 0xEB, 0x3E, 0x6A, 0xBF, 0x15, 0xC0, 0x4B, 0x9E, 0x34, 0xE1, 0xB5, 0x60, 0xCA, 0x1F, 0x62, 0xB7, 0x1D, 0xC8, 0x9C, 0x49, 0xE3, 0x36, 0x19, 0xCC, 0x66, 0xB3, 0xE7, 0x32, 0x98, 0x4D, 0x30, 0xE5, 0x4F, 0x9A, 0xCE, 0x1B, 0xB1, 0x64, 0x72, 0xA7, 0x0D, 0xD8, 0x8C, 0x59, 0xF3, 0x26, 0x5B, 0x8E, 0x24, 0xF1, 0xA5, 0x70, 0xDA, 0x0F, 0x20, 0xF5, 0x5F, 0x8A, 0xDE, 0x0B, 0xA1, 0x74, 0x09, 0xDC, 0x76, 0xA3, 0xF7, 0x22, 0x88, 0x5D, 0xD6, 0x03, 0xA9, 0x7C, 0x28, 0xFD, 0x57, 0x82, 0xFF, 0x2A, 0x80, 0x55, 0x01, 0xD4, 0x7E, 0xAB, 0x84, 0x51, 0xFB, 0x2E, 0x7A, 0xAF, 0x05, 0xD0, 0xAD, 0x78, 0xD2, 0x07, 0x53, 0x86, 0x2C, 0xF9 }; static dissector_handle_t ip_handle; static dissector_handle_t ipv6_handle; static dissector_handle_t eth_withoutfcs_handle; static dissector_handle_t dvb_s2_table_handle; static dissector_handle_t data_handle; void proto_register_dvb_s2_modeadapt(void); void proto_reg_handoff_dvb_s2_modeadapt(void); /* preferences */ #define DVB_S2_RCS_TABLE_DECODING 0 #define DVB_S2_RCS2_TABLE_DECODING 1 static gboolean dvb_s2_full_dissection = FALSE; static gboolean dvb_s2_df_dissection = FALSE; /* Initialize the protocol and registered fields */ static int proto_dvb_s2_modeadapt = -1; static int hf_dvb_s2_modeadapt_sync = -1; static int hf_dvb_s2_modeadapt_acm = -1; static int hf_dvb_s2_modeadapt_acm_fecframe = -1; static int hf_dvb_s2_modeadapt_acm_pilot = -1; static int hf_dvb_s2_modeadapt_acm_modcod = -1; static int hf_dvb_s2_modeadapt_acm_modcod_s2x = -1; static int hf_dvb_s2_modeadapt_cni = -1; static int hf_dvb_s2_modeadapt_frameno = -1; static int proto_dvb_s2_bb = -1; static int hf_dvb_s2_bb_matype1 = -1; static int hf_dvb_s2_bb_matype1_gs = -1; static int hf_dvb_s2_bb_matype1_mis = -1; static int hf_dvb_s2_bb_matype1_acm = -1; static int hf_dvb_s2_bb_matype1_issyi = -1; static int hf_dvb_s2_bb_matype1_npd = -1; static int hf_dvb_s2_bb_matype1_high_ro = -1; static int hf_dvb_s2_bb_matype1_low_ro = -1; static int hf_dvb_s2_bb_matype2 = -1; static int hf_dvb_s2_bb_upl = -1; static int hf_dvb_s2_bb_dfl = -1; static int hf_dvb_s2_bb_sync = -1; static int hf_dvb_s2_bb_syncd = -1; static int hf_dvb_s2_bb_crc = -1; static int hf_dvb_s2_bb_crc_status = -1; static int hf_dvb_s2_bb_df = -1; static int hf_dvb_s2_bb_eip_crc32 = -1; static int hf_dvb_s2_bb_packetized = -1; static int hf_dvb_s2_bb_transport = -1; static int hf_dvb_s2_bb_reserved = -1; static int proto_dvb_s2_gse = -1; static int hf_dvb_s2_gse_hdr = -1; static int hf_dvb_s2_gse_hdr_start = -1; static int hf_dvb_s2_gse_hdr_stop = -1; static int hf_dvb_s2_gse_hdr_labeltype = -1; static int hf_dvb_s2_gse_hdr_length = -1; static int hf_dvb_s2_gse_padding = -1; static int hf_dvb_s2_gse_proto_next_header = -1; static int hf_dvb_s2_gse_proto_ethertype = -1; static int hf_dvb_s2_gse_label6 = -1; static int hf_dvb_s2_gse_label3 = -1; static int hf_dvb_s2_gse_fragid = -1; static int hf_dvb_s2_gse_totlength = -1; static int hf_dvb_s2_gse_exthdr = -1; static int hf_dvb_s2_gse_ncr = -1; static int hf_dvb_s2_gse_data = -1; static int hf_dvb_s2_gse_crc32 = -1; /* Initialize the subtree pointers */ static gint ett_dvb_s2_modeadapt = -1; static gint ett_dvb_s2_modeadapt_acm = -1; static gint ett_dvb_s2_bb = -1; static gint ett_dvb_s2_bb_matype1 = -1; static gint ett_dvb_s2_gse = -1; static gint ett_dvb_s2_gse_hdr = -1; static gint ett_dvb_s2_gse_ncr = -1; static expert_field ei_dvb_s2_bb_crc = EI_INIT; static expert_field ei_dvb_s2_bb_header_ambiguous = EI_INIT; static expert_field ei_dvb_s2_bb_issy_invalid = EI_INIT; static expert_field ei_dvb_s2_bb_npd_invalid = EI_INIT; static expert_field ei_dvb_s2_bb_upl_invalid = EI_INIT; static expert_field ei_dvb_s2_bb_reserved = EI_INIT; /* Reassembly support */ static reassembly_table dvbs2_reassembly_table; static void dvbs2_defragment_init(void) { reassembly_table_init(&dvbs2_reassembly_table, &addresses_reassembly_table_functions); } static gint ett_dvbs2_fragments = -1; static gint ett_dvbs2_fragment = -1; static int hf_dvbs2_fragments = -1; static int hf_dvbs2_fragment = -1; static int hf_dvbs2_fragment_overlap = -1; static int hf_dvbs2_fragment_overlap_conflict = -1; static int hf_dvbs2_fragment_multiple_tails = -1; static int hf_dvbs2_fragment_too_long_fragment = -1; static int hf_dvbs2_fragment_error = -1; static int hf_dvbs2_fragment_count = -1; static int hf_dvbs2_reassembled_in = -1; static int hf_dvbs2_reassembled_length = -1; static int hf_dvbs2_reassembled_data = -1; static const fragment_items dvbs2_frag_items = { &ett_dvbs2_fragment, &ett_dvbs2_fragments, &hf_dvbs2_fragments, &hf_dvbs2_fragment, &hf_dvbs2_fragment_overlap, &hf_dvbs2_fragment_overlap_conflict, &hf_dvbs2_fragment_multiple_tails, &hf_dvbs2_fragment_too_long_fragment, &hf_dvbs2_fragment_error, &hf_dvbs2_fragment_count, &hf_dvbs2_reassembled_in, &hf_dvbs2_reassembled_length, &hf_dvbs2_reassembled_data, "DVB-S2 fragments" }; static unsigned char _use_low_rolloff_value = 0; /* Offset in SYNC MARKER */ #define DVB_S2_OFFS_SYNCBYTE 0 /* *** DVB-S2 Modeadaption Header *** */ /* first byte */ #define DVB_S2_MODEADAPT_OFFS_SYNCBYTE 0 #define DVB_S2_MODEADAPT_SYNCBYTE 0xB8 /* second byte */ #define DVB_S2_MODEADAPT_OFFS_ACMBYTE 1 #define DVB_S2_MODEADAPT_MODCODS_MASK 0x1F #define DVB_S2_MODEADAPT_MODCODS_S2X_MASK 0xDF static const value_string modeadapt_modcods[] = { { 0, "DUMMY PLFRAME"}, { 1, "QPSK 1/4"}, { 2, "QPSK 1/3"}, { 3, "QPSK 2/5"}, { 4, "QPSK 1/2"}, { 5, "QPSK 3/5"}, { 6, "QPSK 2/3"}, { 7, "QPSK 3/4"}, { 8, "QPSK 4/5"}, { 9, "QPSK 5/6"}, {10, "QPSK 8/9"}, {11, "QPSK 9/10"}, {12, "8PSK 3/5"}, {13, "8PSK 2/3"}, {14, "8PSK 3/4"}, {15, "8PSK 5/6"}, {16, "8PSK 8/9"}, {17, "8PSK 9/10"}, {18, "16APSK 2/3"}, {19, "16APSK 3/4"}, {20, "16APSK 4/5"}, {21, "16APSK 5/6"}, {22, "16APSK 8/9"}, {23, "16APSK 9/10"}, {24, "32APSK 3/4"}, {25, "32APSK 4/5"}, {26, "32APSK 5/6"}, {27, "32APSK 8/9"}, {28, "32APSK 9/10"}, {29, "reserved"}, {30, "reserved"}, {31, "reserved"}, {32, "QPSK 1/3 SF48"}, {33, "QPSK 1/2 SF48"}, {34, "QPSK 1/4 SF12"}, {35, "QPSK 1/3 SF12"}, {36, "QPSK 1/2 SF12"}, {37, "QPSK 1/3 SF6"}, {38, "QPSK 1/2 SF6"}, {39, "QPSK 1/3 SF3"}, {40, "QPSK 2/5 SF3"}, {41, "QPSK 1/3 SF2"}, {42, "QPSK 2/5 SF2"}, {43, "QPSK 1/2 SF2"}, {44, "QPSK 1/3 SF1"}, {45, "QPSK 2/5 SF1"}, {46, "QPSK 1/2 SF1"}, {47, "reserved"}, {48, "reserved"}, {49, "reserved"}, {50, "reserved"}, {51, "reserved"}, {52, "reserved"}, {53, "reserved"}, {54, "reserved"}, {55, "reserved"}, {56, "reserved"}, {57, "reserved"}, {58, "reserved"}, {59, "reserved"}, {60, "reserved"}, {61, "reserved"}, {62, "reserved"}, {63, "reserved"}, {64, "reserved"}, {65, "reserved"}, {66, "reserved"}, {67, "reserved"}, {68, "reserved"}, {69, "reserved"}, {70, "reserved"}, {71, "reserved"}, {72, "reserved"}, {73, "reserved"}, {74, "reserved"}, {75, "reserved"}, {76, "reserved"}, {77, "reserved"}, {78, "reserved"}, {79, "reserved"}, {80, "reserved"}, {81, "reserved"}, {82, "reserved"}, {83, "reserved"}, {84, "reserved"}, {85, "reserved"}, {86, "reserved"}, {87, "reserved"}, {88, "reserved"}, {89, "reserved"}, {90, "reserved"}, {91, "reserved"}, {92, "reserved"}, {93, "reserved"}, {94, "reserved"}, {95, "reserved"}, {96, "reserved"}, {97, "reserved"}, {98, "reserved"}, {99, "reserved"}, {100, "reserved"}, {101, "reserved"}, {102, "reserved"}, {103, "reserved"}, {104, "reserved"}, {105, "reserved"}, {106, "reserved"}, {107, "reserved"}, {108, "reserved"}, {109, "reserved"}, {110, "reserved"}, {111, "reserved"}, {112, "reserved"}, {113, "reserved"}, {114, "reserved"}, {115, "reserved"}, {116, "reserved"}, {117, "reserved"}, {118, "reserved"}, {119, "reserved"}, {120, "reserved"}, {121, "reserved"}, {122, "reserved"}, {123, "reserved"}, {124, "reserved"}, {125, "reserved"}, {126, "reserved"}, {127, "reserved"}, {128, "reserved"}, {129, "reserved"}, {130, "reserved"}, {131, "reserved"}, {132, "QPSK 13/45"}, {133, "reserved"}, {134, "QPSK 9/20"}, {135, "reserved"}, {136, "QPSK 11/20"}, {137, "reserved"}, {138, "8PSK 5/9-L"}, {139, "reserved"}, {140, "8PSK 26/45-L"}, {141, "reserved"}, {142, "8PSK 23/36"}, {143, "reserved"}, {144, "8PSK 25/36"}, {145, "reserved"}, {146, "8PSK 13/18"}, {147, "reserved"}, {148, "16APSK 1/2-L"}, {149, "reserved"}, {150, "16APSK 8/15-L"}, {151, "reserved"}, {152, "16APSK 5/9-L"}, {153, "reserved"}, {154, "16APSK 26/45"}, {155, "reserved"}, {156, "16APSK 3/5"}, {157, "reserved"}, {158, "16APSK 3/5-L"}, {159, "reserved"}, {160, "16APSK 28/45"}, {161, "reserved"}, {162, "16APSK 23/36"}, {163, "reserved"}, {164, "16APSK 2/3-L"}, {165, "reserved"}, {166, "16APSK 25/36"}, {167, "reserved"}, {168, "16APSK 13/18"}, {169, "reserved"}, {170, "16APSK 7/9"}, {171, "reserved"}, {172, "16APSK 77/90"}, {173, "reserved"}, {174, "32APSK 2/3-L"}, {175, "reserved"}, {176, "reserved"}, {177, "reserved"}, {178, "32APSK 32/45"}, {179, "reserved"}, {180, "32APSK 11/15"}, {181, "reserved"}, {182, "32APSK 7/9"}, {183, "reserved"}, {184, "64APSK 32/45-L"}, {185, "reserved"}, {186, "64APSK 11/15"}, {187, "reserved"}, {188, "reserved"}, {189, "reserved"}, {190, "64APSK 7/9"}, {191, "reserved"}, {192, "reserved"}, {193, "reserved"}, {194, "64APSK 4/5"}, {195, "reserved"}, {196, "reserved"}, {197, "reserved"}, {198, "64APSK 5/6"}, {199, "reserved"}, {200, "128APSK 3/4"}, {201, "reserved"}, {202, "128APSK 7/9"}, {203, "reserved"}, {204, "256APSK 29/45-L"}, {205, "reserved"}, {206, "256APSK 2/3-L"}, {207, "reserved"}, {208, "256APSK 31/45-L"}, {209, "reserved"}, {210, "256APSK 32/45"}, {211, "reserved"}, {212, "256APSK 11/15-L"}, {213, "reserved"}, {214, "256APSK 3/4"}, {215, "reserved"}, {216, "QPSK 11/45"}, {217, "reserved"}, {218, "QPSK 4/15"}, {219, "reserved"}, {220, "QPSK 14/45"}, {221, "reserved"}, {222, "QPSK 7/15"}, {223, "reserved"}, {224, "QPSK 8/15"}, {225, "reserved"}, {226, "QPSK 32/45"}, {227, "reserved"}, {228, "8PSK 7/15"}, {229, "reserved"}, {230, "8PSK 8/15"}, {231, "reserved"}, {232, "8PSK 26/45"}, {233, "reserved"}, {234, "8PSK 32/45"}, {235, "reserved"}, {236, "16APSK 7/15"}, {237, "reserved"}, {238, "16APSK 8/15"}, {239, "reserved"}, {240, "16APSK 26/45"}, {241, "reserved"}, {242, "16APSK 3/5"}, {243, "reserved"}, {244, "16APSK 32/45"}, {245, "reserved"}, {246, "32APSK 2/3"}, {247, "reserved"}, {248, "32APSK 32/45"}, {249, "reserved"}, {250, "reserved"}, {251, "reserved"}, {252, "reserved"}, {253, "reserved"}, {254, "reserved"}, {255, "reserved"}, { 0, NULL} }; static value_string_ext modeadapt_modcods_ext = VALUE_STRING_EXT_INIT(modeadapt_modcods); #define DVB_S2_MODEADAPT_PILOTS_MASK 0x20 static const true_false_string tfs_modeadapt_pilots = { "pilots on", "pilots off" }; #define DVB_S2_MODEADAPT_FECFRAME_MASK 0x40 static const true_false_string tfs_modeadapt_fecframe = { "short", "normal" }; /* third byte */ #define DVB_S2_MODEADAPT_OFFS_CNI 2 static const value_string modeadapt_esno[] = { { 0, "modem unlocked, SNR not available"}, { 1, "-1.000"}, { 2, "-0.875"}, { 3, "-0.750"}, { 4, "-0.625"}, { 5, "-0.500"}, { 6, "-0.375"}, { 7, "-0.250"}, { 8, "-0.125"}, { 9, "0.000"}, { 10, "0.125"}, { 11, "0.250"}, { 12, "0.375"}, { 13, "0.500"}, { 14, "0.625"}, { 15, "0.750"}, { 16, "0.875"}, { 17, "1.000"}, { 18, "1.125"}, { 19, "1.250"}, { 20, "1.375"}, { 21, "1.500"}, { 22, "1.625"}, { 23, "1.750"}, { 24, "1.875"}, { 25, "2.000"}, { 26, "2.125"}, { 27, "2.250"}, { 28, "2.375"}, { 29, "2.500"}, { 30, "2.625"}, { 31, "2.750"}, { 32, "2.875"}, { 33, "3.000"}, { 34, "3.125"}, { 35, "3.250"}, { 36, "3.375"}, { 37, "3.500"}, { 38, "3.625"}, { 39, "3.750"}, { 40, "3.875"}, { 41, "4.000"}, { 42, "4.125"}, { 43, "4.250"}, { 44, "4.375"}, { 45, "4.500"}, { 46, "4.625"}, { 47, "4.750"}, { 48, "4.875"}, { 49, "5.000"}, { 50, "5.125"}, { 51, "5.250"}, { 52, "5.375"}, { 53, "5.500"}, { 54, "5.625"}, { 55, "5.750"}, { 56, "5.875"}, { 57, "6.000"}, { 58, "6.125"}, { 59, "6.250"}, { 60, "6.375"}, { 61, "6.500"}, { 62, "6.625"}, { 63, "6.750"}, { 64, "6.875"}, { 65, "7.000"}, { 66, "7.125"}, { 67, "7.250"}, { 68, "7.375"}, { 69, "7.500"}, { 70, "7.625"}, { 71, "7.750"}, { 72, "7.875"}, { 73, "8.000"}, { 74, "8.125"}, { 75, "8.250"}, { 76, "8.375"}, { 77, "8.500"}, { 78, "8.625"}, { 79, "8.750"}, { 80, "8.875"}, { 81, "9.000"}, { 82, "9.125"}, { 83, "9.250"}, { 84, "9.375"}, { 85, "9.500"}, { 86, "9.625"}, { 87, "9.750"}, { 88, "9.875"}, { 89, "10.000"}, { 90, "10.125"}, { 91, "10.250"}, { 92, "10.375"}, { 93, "10.500"}, { 94, "10.625"}, { 95, "10.750"}, { 96, "10.875"}, { 97, "11.000"}, { 98, "11.125"}, { 99, "11.250"}, {100, "11.375"}, {101, "11.500"}, {102, "11.625"}, {103, "11.750"}, {104, "11.875"}, {105, "12.000"}, {106, "12.125"}, {107, "12.250"}, {108, "12.375"}, {109, "12.500"}, {110, "12.625"}, {111, "12.750"}, {112, "12.875"}, {113, "13.000"}, {114, "13.125"}, {115, "13.250"}, {116, "13.375"}, {117, "13.500"}, {118, "13.625"}, {119, "13.750"}, {120, "13.875"}, {121, "14.000"}, {122, "14.125"}, {123, "14.250"}, {124, "14.375"}, {125, "14.500"}, {126, "14.625"}, {127, "14.750"}, {128, "14.875"}, {129, "15.000"}, {130, "15.125"}, {131, "15.250"}, {132, "15.375"}, {133, "15.500"}, {134, "15.625"}, {135, "15.750"}, {136, "15.875"}, {137, "16.000"}, {138, "16.125"}, {139, "16.250"}, {140, "16.375"}, {141, "16.500"}, {142, "16.625"}, {143, "16.750"}, {144, "16.875"}, {145, "17.000"}, {146, "17.125"}, {147, "17.250"}, {148, "17.375"}, {149, "17.500"}, {150, "17.625"}, {151, "17.750"}, {152, "17.875"}, {153, "18.000"}, {154, "18.125"}, {155, "18.250"}, {156, "18.375"}, {157, "18.500"}, {158, "18.625"}, {159, "18.750"}, {160, "18.875"}, {161, "19.000"}, {162, "19.125"}, {163, "19.250"}, {164, "19.375"}, {165, "19.500"}, {166, "19.625"}, {167, "19.750"}, {168, "19.875"}, {169, "20.000"}, {170, "20.125"}, {171, "20.250"}, {172, "20.375"}, {173, "20.500"}, {174, "20.625"}, {175, "20.750"}, {176, "20.875"}, {177, "21.000"}, {178, "21.125"}, {179, "21.250"}, {180, "21.375"}, {181, "21.500"}, {182, "21.625"}, {183, "21.750"}, {184, "21.875"}, {185, "22.000"}, {186, "22.125"}, {187, "22.250"}, {188, "22.375"}, {189, "22.500"}, {190, "22.625"}, {191, "22.750"}, {192, "22.875"}, {193, "23.000"}, {194, "23.125"}, {195, "23.250"}, {196, "23.375"}, {197, "23.500"}, {198, "23.625"}, {199, "23.750"}, {200, "23.875"}, {201, "24.000"}, {202, "24.125"}, {203, "24.250"}, {204, "24.375"}, {205, "24.500"}, {206, "24.625"}, {207, "24.750"}, {208, "24.875"}, {209, "25.000"}, {210, "25.125"}, {211, "25.250"}, {212, "25.375"}, {213, "25.500"}, {214, "25.625"}, {215, "25.750"}, {216, "25.875"}, {217, "26.000"}, {218, "26.125"}, {219, "26.250"}, {220, "26.375"}, {221, "26.500"}, {222, "26.625"}, {223, "26.750"}, {224, "26.875"}, {225, "27.000"}, {226, "27.125"}, {227, "27.250"}, {228, "27.375"}, {229, "27.500"}, {230, "27.625"}, {231, "27.750"}, {232, "27.875"}, {233, "28.000"}, {234, "28.125"}, {235, "28.250"}, {236, "28.375"}, {237, "28.500"}, {238, "28.625"}, {239, "28.750"}, {240, "28.875"}, {241, "29.000"}, {242, "29.125"}, {243, "29.250"}, {244, "29.375"}, {245, "29.500"}, {246, "29.625"}, {247, "29.750"}, {248, "29.875"}, {249, "30.000"}, {250, "30.125"}, {251, "30.250"}, {252, "30.375"}, {253, "30.500"}, {254, "30.625"}, {255, ">30.750"}, { 0, NULL} }; static value_string_ext modeadapt_esno_ext = VALUE_STRING_EXT_INIT(modeadapt_esno); /* fourth byte */ #define DVB_S2_MODEADAPT_OFFS_FNO 3 /* *** DVB-S2 Base-Band Frame *** */ #define DVB_S2_BB_HEADER_LEN 10 #define DVB_S2_BB_OFFS_MATYPE1 0 #define DVB_S2_BB_TSGS_MASK 0xC0 #define DVB_S2_BB_TSGS_GENERIC_PACKETIZED 0x00 #define DVB_S2_BB_TSGS_GENERIC_CONTINUOUS 0x40 #define DVB_S2_BB_TSGS_TRANSPORT_STREAM 0xC0 #define DVB_S2_BB_TSGS_RESERVED 0x80 static const value_string bb_tsgs[] = { {0, "Generic Packetized (not GSE)"}, {1, "Generic Continuous (GSE)"}, {2, "reserved"}, {3, "Transport (TS)"}, {0, NULL} }; #define DVB_S2_BB_MIS_POS 5 #define DVB_S2_BB_MIS_MASK 0x20 static const true_false_string tfs_bb_mis = { "single (SIS)", "multiple (MIS)" }; #define DVB_S2_BB_ACM_MASK 0x10 static const true_false_string tfs_bb_acm = { "constant (CCM)", "adaptive (ACM)" }; #define DVB_S2_BB_ISSYI_POS 3 #define DVB_S2_BB_ISSYI_MASK 0x08 static const true_false_string tfs_bb_issyi = { "active", "not-active" }; #define DVB_S2_BB_NPD_POS 2 #define DVB_S2_BB_NPD_MASK 0x04 static const true_false_string tfs_bb_npd = { "active", "not-active" }; #define DVB_S2_BB_RO_MASK 0x03 static const value_string bb_high_ro[] = { {0, "0,35"}, {1, "0,25"}, {2, "0,20"}, {3, "Low rolloff flag"}, {0, NULL} }; static const value_string bb_low_ro[] = { {0, "0,15"}, {1, "0,10"}, {2, "0,05"}, {3, "Low rolloff flag"}, {0, NULL} }; #define DVB_S2_BB_OFFS_MATYPE2 1 #define DVB_S2_BB_OFFS_UPL 2 #define DVB_S2_BB_OFFS_DFL 4 #define DVB_S2_BB_OFFS_SYNC 6 #define DVB_S2_BB_OFFS_SYNCD 7 #define DVB_S2_BB_OFFS_CRC 9 #define DVB_S2_BB_EIP_CRC32_LEN 4 #define DVB_S2_BB_SYNC_EIP_CRC32 1 /* *** DVB-S2 GSE Frame *** */ #define DVB_S2_GSE_MINSIZE 2 #define DVB_S2_GSE_OFFS_HDR 0 #define DVB_S2_GSE_HDR_START_MASK 0x8000 #define DVB_S2_GSE_HDR_START_POS 15 #define DVB_S2_GSE_HDR_STOP_MASK 0x4000 #define DVB_S2_GSE_HDR_STOP_POS 14 static const true_false_string tfs_gse_ss = { "enabled", "disabled" }; #define DVB_S2_GSE_HDR_LABELTYPE_MASK 0x3000 #define DVB_S2_GSE_HDR_LABELTYPE_POS1 13 #define DVB_S2_GSE_HDR_LABELTYPE_POS2 12 static const value_string gse_labeltype[] = { {0, "6 byte"}, {1, "3 byte"}, {2, "0 byte (Broadcast)"}, {3, "re-use last label"}, {0, NULL} }; #define DVB_S2_GSE_HDR_LENGTH_MASK 0x0FFF #define DVB_RCS2_NCR 0x0081 #define DVB_RCS2_SIGNAL_TABLE 0x0082 static const value_string gse_proto_next_header_str[] = { /* Mandatory Extension Headers (or link-dependent type fields) for ULE (Range 0-255 decimal) */ {0x0000, "Test SNDU" }, {0x0001, "Bridged Frame" }, {0x0002, "TS-Concat" }, {0x0003, "PDU-Concat" }, {DVB_RCS2_NCR, "NCR" }, {DVB_RCS2_SIGNAL_TABLE, "Signaling Table" }, {131, "LL_RCS_DCP" }, {132, "LL_RCS_1" }, {133, "LL_RCS_TRANSEC_SYS" }, {134, "LL_RCS_TRANSEC_PAY" }, {135, "DVB-GSE_LLC" }, /* Unassigned, private, unassigned ranges */ {200, "LL_RCS_FEC_EDT" }, /* Unassigned */ /* Optional Extension Headers for ULE (Range 256-511 decimal) */ {256, "Extension-Padding" }, {257, "Timestamp" }, /* Unassigned */ {450, "LL_RCS_FEC_ADT" }, {451, "LL_CRC32" }, /* Unassigned */ {0, NULL} }; #define DVB_S2_GSE_CRC32_LEN 4 /* *** helper functions *** */ static guint8 compute_crc8(tvbuff_t *p, guint8 len, guint8 offset) { int i; guint8 crc = 0, tmp; for (i = 0; i < len; i++) { tmp = tvb_get_guint8(p, offset++); crc = crc8_table[crc ^ tmp]; } return crc; } /* *** Code to actually dissect the packets *** */ static int dissect_dvb_s2_gse(tvbuff_t *tvb, int cur_off, proto_tree *tree, packet_info *pinfo, int bytes_available) { int new_off = 0; int frag_len; guint16 gse_hdr, data_len, padding_len, gse_proto = 0; proto_item *ti; proto_item *ttf; proto_tree *dvb_s2_gse_tree, *dvb_s2_gse_ncr_tree; tvbuff_t *next_tvb, *data_tvb; gboolean dissected = FALSE; gboolean update_col_info = TRUE; static int * const gse_header_bitfields[] = { &hf_dvb_s2_gse_hdr_start, &hf_dvb_s2_gse_hdr_stop, &hf_dvb_s2_gse_hdr_labeltype, &hf_dvb_s2_gse_hdr_length, NULL }; col_append_str(pinfo->cinfo, COL_INFO, " GSE"); /* get the GSE header */ gse_hdr = tvb_get_ntohs(tvb, cur_off + DVB_S2_GSE_OFFS_HDR); /* check if this is just padding, which takes up the rest of the frame */ if (BIT_IS_CLEAR(gse_hdr, DVB_S2_GSE_HDR_START_POS) && BIT_IS_CLEAR(gse_hdr, DVB_S2_GSE_HDR_STOP_POS) && BIT_IS_CLEAR(gse_hdr, DVB_S2_GSE_HDR_LABELTYPE_POS1) && BIT_IS_CLEAR(gse_hdr, DVB_S2_GSE_HDR_LABELTYPE_POS2)) { padding_len = bytes_available; proto_tree_add_uint_format(tree, hf_dvb_s2_gse_padding, tvb, cur_off + new_off, padding_len, padding_len, "DVB-S2 GSE Padding, Length: %d", padding_len); col_append_str(pinfo->cinfo, COL_INFO, " pad"); new_off += padding_len; return new_off; } else { /* Not padding, parse as a GSE Header */ new_off += 2; frag_len = (gse_hdr & DVB_S2_GSE_HDR_LENGTH_MASK)+2; ti = proto_tree_add_item(tree, proto_dvb_s2_gse, tvb, cur_off, frag_len, ENC_NA); dvb_s2_gse_tree = proto_item_add_subtree(ti, ett_dvb_s2_gse); proto_tree_add_bitmask_with_flags(dvb_s2_gse_tree, tvb, cur_off + DVB_S2_GSE_OFFS_HDR, hf_dvb_s2_gse_hdr, ett_dvb_s2_gse_hdr, gse_header_bitfields, ENC_BIG_ENDIAN, BMT_NO_TFS); /* Get the fragment ID for reassembly */ guint8 fragid = tvb_get_guint8(tvb, cur_off + new_off); if (BIT_IS_CLEAR(gse_hdr, DVB_S2_GSE_HDR_START_POS) || BIT_IS_CLEAR(gse_hdr, DVB_S2_GSE_HDR_STOP_POS)) { /* Not a start or end packet, add only the fragid */ proto_tree_add_item(dvb_s2_gse_tree, hf_dvb_s2_gse_fragid, tvb, cur_off + new_off, 1, ENC_BIG_ENDIAN); new_off += 1; } if (BIT_IS_SET(gse_hdr, DVB_S2_GSE_HDR_START_POS) && BIT_IS_CLEAR(gse_hdr, DVB_S2_GSE_HDR_STOP_POS)) { /* Start packet, add the fragment size */ proto_tree_add_item(dvb_s2_gse_tree, hf_dvb_s2_gse_totlength, tvb, cur_off + new_off, 2, ENC_BIG_ENDIAN); col_append_str(pinfo->cinfo, COL_INFO, "(frag) "); new_off += 2; } if (BIT_IS_SET(gse_hdr, DVB_S2_GSE_HDR_START_POS)) { /* Start packet, decode the header */ gse_proto = tvb_get_ntohs(tvb, cur_off + new_off); /* Protocol Type */ if (gse_proto <= 1535) { /* Type 1 (Next-Header Type field) */ proto_tree_add_item(dvb_s2_gse_tree, hf_dvb_s2_gse_proto_next_header, tvb, cur_off + new_off, 2, ENC_BIG_ENDIAN); } else { /* Type 2 (EtherType compatible Type Fields) */ proto_tree_add_item(dvb_s2_gse_tree, hf_dvb_s2_gse_proto_ethertype, tvb, cur_off + new_off, 2, ENC_BIG_ENDIAN); } new_off += 2; if (BIT_IS_CLEAR(gse_hdr, DVB_S2_GSE_HDR_LABELTYPE_POS1) && BIT_IS_CLEAR(gse_hdr, DVB_S2_GSE_HDR_LABELTYPE_POS2)) { /* 6 byte label */ if (BIT_IS_SET(gse_hdr, DVB_S2_GSE_HDR_STOP_POS)) col_append_str(pinfo->cinfo, COL_INFO, "6 "); proto_tree_add_item(dvb_s2_gse_tree, hf_dvb_s2_gse_label6, tvb, cur_off + new_off, 6, ENC_NA); new_off += 6; } else if (BIT_IS_CLEAR(gse_hdr, DVB_S2_GSE_HDR_LABELTYPE_POS1) && BIT_IS_SET(gse_hdr, DVB_S2_GSE_HDR_LABELTYPE_POS2)) { /* 3 byte label */ if (BIT_IS_SET(gse_hdr, DVB_S2_GSE_HDR_STOP_POS)) col_append_str(pinfo->cinfo, COL_INFO, "3 "); proto_tree_add_item(dvb_s2_gse_tree, hf_dvb_s2_gse_label3, tvb, cur_off + new_off, 3, ENC_BIG_ENDIAN); new_off += 3; } else { /* 0 byte label */ if (BIT_IS_SET(gse_hdr, DVB_S2_GSE_HDR_STOP_POS)) col_append_str(pinfo->cinfo, COL_INFO, "0 "); } if (gse_proto < 0x0600 && gse_proto >= 0x100) { /* Only display optional extension headers */ /* TODO: needs to be tested */ /* TODO: implementation needs to be checked (len of ext-header??) */ proto_tree_add_item(dvb_s2_gse_tree, hf_dvb_s2_gse_exthdr, tvb, cur_off + new_off, 1, ENC_BIG_ENDIAN); new_off += 1; } } else { /* correct cinfo */ col_append_str(pinfo->cinfo, COL_INFO, "(frag) "); } next_tvb = tvb_new_subset_remaining(tvb, cur_off + new_off); if (BIT_IS_CLEAR(gse_hdr, DVB_S2_GSE_HDR_START_POS) && BIT_IS_SET(gse_hdr, DVB_S2_GSE_HDR_STOP_POS)) { data_len = (gse_hdr & DVB_S2_GSE_HDR_LENGTH_MASK) - (new_off - DVB_S2_GSE_MINSIZE) - DVB_S2_GSE_CRC32_LEN; } else { data_len = (gse_hdr & DVB_S2_GSE_HDR_LENGTH_MASK) - (new_off - DVB_S2_GSE_MINSIZE); } data_tvb = NULL; if (BIT_IS_CLEAR(gse_hdr, DVB_S2_GSE_HDR_START_POS) || BIT_IS_CLEAR(gse_hdr, DVB_S2_GSE_HDR_STOP_POS)) { fragment_head *dvbs2_frag_head = NULL; int offset = cur_off + new_off; if (BIT_IS_SET(gse_hdr, DVB_S2_GSE_HDR_START_POS)) { offset -= 2; /* re-include GSE type in reassembled data */ data_len += 2; } dvbs2_frag_head = fragment_add_seq_next(&dvbs2_reassembly_table, tvb, offset, pinfo, fragid, NULL, data_len, BIT_IS_CLEAR(gse_hdr, DVB_S2_GSE_HDR_STOP_POS)); if (BIT_IS_SET(gse_hdr, DVB_S2_GSE_HDR_STOP_POS)) dvbs2_frag_head = fragment_end_seq_next(&dvbs2_reassembly_table, pinfo, fragid, NULL); data_tvb = process_reassembled_data(tvb, cur_off + new_off, pinfo, "Reassembled DVB-S2", dvbs2_frag_head, &dvbs2_frag_items, &update_col_info, tree); } if (data_tvb != NULL) { /* We have a reassembled packet. Extract the gse_proto from it. */ gse_proto = tvb_get_ntohs(data_tvb, 0); /* And then remove it from the reassembled data */ data_tvb = tvb_new_subset_remaining(data_tvb, 2); } else { data_tvb = tvb_new_subset_length(tvb, cur_off + new_off, data_len); } switch (gse_proto) { case ETHERTYPE_IP: if (dvb_s2_full_dissection) { new_off += call_dissector(ip_handle, next_tvb, pinfo, tree); dissected = TRUE; } break; case ETHERTYPE_IPv6: if (dvb_s2_full_dissection) { new_off += call_dissector(ipv6_handle, next_tvb, pinfo, tree); dissected = TRUE; } break; case ETHERTYPE_VLAN: if (dvb_s2_full_dissection) { new_off += call_dissector(eth_withoutfcs_handle, next_tvb, pinfo, tree); dissected = TRUE; } break; case DVB_RCS2_SIGNAL_TABLE: call_dissector(dvb_s2_table_handle, data_tvb, pinfo, tree); new_off += data_len; dissected = TRUE; break; case DVB_RCS2_NCR: ttf = proto_tree_add_item(dvb_s2_gse_tree, hf_dvb_s2_gse_ncr, tvb, cur_off + new_off, data_len, ENC_NA); dvb_s2_gse_ncr_tree = proto_item_add_subtree(ttf, ett_dvb_s2_gse_ncr); proto_tree_add_item(dvb_s2_gse_ncr_tree, hf_dvb_s2_gse_data, tvb, cur_off + new_off, data_len, ENC_NA); new_off += data_len; dissected = TRUE; break; default: /* Not handled! TODO: expert info? */ break; } if (!dissected) { proto_tree_add_item(dvb_s2_gse_tree, hf_dvb_s2_gse_data, tvb, cur_off + new_off, data_len, ENC_NA); new_off += data_len; } /* add crc32 if last fragment */ if (BIT_IS_CLEAR(gse_hdr, DVB_S2_GSE_HDR_START_POS) && BIT_IS_SET(gse_hdr, DVB_S2_GSE_HDR_STOP_POS)) { proto_tree_add_item(dvb_s2_gse_tree, hf_dvb_s2_gse_crc32, tvb, cur_off + new_off, DVB_S2_GSE_CRC32_LEN, ENC_BIG_ENDIAN); new_off += DVB_S2_GSE_CRC32_LEN; } } return new_off; } static gboolean test_dvb_s2_crc(tvbuff_t *tvb, guint offset) { guint8 input8; /* only check BB Header and return */ if (tvb_captured_length(tvb) < (offset + DVB_S2_BB_HEADER_LEN)) return FALSE; input8 = tvb_get_guint8(tvb, offset + DVB_S2_BB_OFFS_CRC); if (compute_crc8(tvb, DVB_S2_BB_HEADER_LEN - 1, offset) != input8) return FALSE; else return TRUE; } static int dissect_dvb_s2_bb(tvbuff_t *tvb, int cur_off, proto_tree *tree, packet_info *pinfo) { proto_item *ti; proto_tree *dvb_s2_bb_tree; guint8 input8, matype1; guint8 sync_flag = 0; guint16 input16, bb_data_len = 0, user_packet_length; int sub_dissected = 0, flag_is_ms = 0, new_off = 0; static int * const bb_header_bitfields[] = { &hf_dvb_s2_bb_matype1_gs, &hf_dvb_s2_bb_matype1_mis, &hf_dvb_s2_bb_matype1_acm, &hf_dvb_s2_bb_matype1_issyi, &hf_dvb_s2_bb_matype1_npd, &hf_dvb_s2_bb_matype1_low_ro, NULL }; col_append_str(pinfo->cinfo, COL_PROTOCOL, "BB "); col_append_str(pinfo->cinfo, COL_INFO, "Baseband "); /* create display subtree for the protocol */ ti = proto_tree_add_item(tree, proto_dvb_s2_bb, tvb, cur_off, DVB_S2_BB_HEADER_LEN, ENC_NA); dvb_s2_bb_tree = proto_item_add_subtree(ti, ett_dvb_s2_bb); matype1 = tvb_get_guint8(tvb, cur_off + DVB_S2_BB_OFFS_MATYPE1); new_off += 1; if (BIT_IS_CLEAR(matype1, DVB_S2_BB_MIS_POS)) flag_is_ms = 1; proto_tree_add_bitmask_with_flags(dvb_s2_bb_tree, tvb, cur_off + DVB_S2_BB_OFFS_MATYPE1, hf_dvb_s2_bb_matype1, ett_dvb_s2_bb_matype1, bb_header_bitfields, ENC_BIG_ENDIAN, BMT_NO_FLAGS); input8 = tvb_get_guint8(tvb, cur_off + DVB_S2_BB_OFFS_MATYPE1); if ((pinfo->fd->num == 1) && (_use_low_rolloff_value != 0)) { _use_low_rolloff_value = 0; } if (((input8 & 0x03) == 3) && !_use_low_rolloff_value) { _use_low_rolloff_value = 1; } if (_use_low_rolloff_value) { proto_tree_add_item(dvb_s2_bb_tree, hf_dvb_s2_bb_matype1_low_ro, tvb, cur_off + DVB_S2_BB_OFFS_MATYPE1, 1, ENC_BIG_ENDIAN); } else { proto_tree_add_item(dvb_s2_bb_tree, hf_dvb_s2_bb_matype1_high_ro, tvb, cur_off + DVB_S2_BB_OFFS_MATYPE1, 1, ENC_BIG_ENDIAN); } input8 = tvb_get_guint8(tvb, cur_off + DVB_S2_BB_OFFS_MATYPE2); new_off += 1; if (flag_is_ms) { proto_tree_add_uint_format_value(dvb_s2_bb_tree, hf_dvb_s2_bb_matype2, tvb, cur_off + DVB_S2_BB_OFFS_MATYPE2, 1, input8, "Input Stream Identifier (ISI): %d", input8); } else { proto_tree_add_uint_format_value(dvb_s2_bb_tree, hf_dvb_s2_bb_matype2, tvb, cur_off + DVB_S2_BB_OFFS_MATYPE2, 1, input8, "reserved"); } user_packet_length = input16 = tvb_get_ntohs(tvb, cur_off + DVB_S2_BB_OFFS_UPL); new_off += 2; proto_tree_add_uint_format(dvb_s2_bb_tree, hf_dvb_s2_bb_upl, tvb, cur_off + DVB_S2_BB_OFFS_UPL, 2, input16, "User Packet Length: %d bits (%d bytes)", (guint16) input16, (guint16) input16 / 8); bb_data_len = input16 = tvb_get_ntohs(tvb, cur_off + DVB_S2_BB_OFFS_DFL); bb_data_len /= 8; new_off += 2; proto_tree_add_uint_format_value(dvb_s2_bb_tree, hf_dvb_s2_bb_dfl, tvb, cur_off + DVB_S2_BB_OFFS_DFL, 2, input16, "%d bits (%d bytes)", input16, input16 / 8); new_off += 1; sync_flag = tvb_get_guint8(tvb, cur_off + DVB_S2_BB_OFFS_SYNC); proto_tree_add_item(dvb_s2_bb_tree, hf_dvb_s2_bb_sync, tvb, cur_off + DVB_S2_BB_OFFS_SYNC, 1, ENC_BIG_ENDIAN); new_off += 2; proto_tree_add_item(dvb_s2_bb_tree, hf_dvb_s2_bb_syncd, tvb, cur_off + DVB_S2_BB_OFFS_SYNCD, 2, ENC_BIG_ENDIAN); new_off += 1; proto_tree_add_checksum(dvb_s2_bb_tree, tvb, cur_off + DVB_S2_BB_OFFS_CRC, hf_dvb_s2_bb_crc, hf_dvb_s2_bb_crc_status, &ei_dvb_s2_bb_crc, pinfo, compute_crc8(tvb, DVB_S2_BB_HEADER_LEN - 1, cur_off), ENC_NA, PROTO_CHECKSUM_VERIFY); switch (matype1 & DVB_S2_BB_TSGS_MASK) { case DVB_S2_BB_TSGS_GENERIC_CONTINUOUS: /* Check GSE constraints on the BB header per 9.2.1 of ETSI TS 102 771 */ if (BIT_IS_SET(matype1, DVB_S2_BB_ISSYI_POS)) { expert_add_info(pinfo, ti, &ei_dvb_s2_bb_issy_invalid); } if (BIT_IS_SET(matype1, DVB_S2_BB_NPD_POS)) { expert_add_info(pinfo, ti, &ei_dvb_s2_bb_npd_invalid); } if (user_packet_length != 0x0000) { expert_add_info_format(pinfo, ti, &ei_dvb_s2_bb_upl_invalid, "UPL is 0x%04x. It must be 0x0000 for GSE packets.", user_packet_length); } if (dvb_s2_df_dissection) { while (bb_data_len) { if (sync_flag == DVB_S2_BB_SYNC_EIP_CRC32 && bb_data_len == DVB_S2_BB_EIP_CRC32_LEN) { proto_tree_add_item(dvb_s2_bb_tree, hf_dvb_s2_bb_eip_crc32, tvb, cur_off + new_off, bb_data_len, ENC_NA); bb_data_len = 0; new_off += DVB_S2_BB_EIP_CRC32_LEN; } else { /* start DVB-GSE dissector */ sub_dissected = dissect_dvb_s2_gse(tvb, cur_off + new_off, tree, pinfo, bb_data_len); new_off += sub_dissected; if ((sub_dissected <= bb_data_len) && (sub_dissected >= DVB_S2_GSE_MINSIZE)) { bb_data_len -= sub_dissected; if (bb_data_len < DVB_S2_GSE_MINSIZE) bb_data_len = 0; } } } } else { proto_tree_add_item(dvb_s2_bb_tree, hf_dvb_s2_bb_df, tvb, cur_off + new_off, bb_data_len, ENC_NA); new_off += bb_data_len; } break; case DVB_S2_BB_TSGS_GENERIC_PACKETIZED: proto_tree_add_item(tree, hf_dvb_s2_bb_packetized, tvb, cur_off + new_off, bb_data_len, ENC_NA); new_off += bb_data_len; break; case DVB_S2_BB_TSGS_TRANSPORT_STREAM: proto_tree_add_item(tree, hf_dvb_s2_bb_transport, tvb, cur_off + new_off, bb_data_len, ENC_NA); new_off += bb_data_len; break; default: proto_tree_add_item(tree, hf_dvb_s2_bb_reserved, tvb, cur_off + new_off,bb_data_len, ENC_NA); new_off += bb_data_len; expert_add_info(pinfo, ti, &ei_dvb_s2_bb_reserved); break; } return new_off; } static int dissect_dvb_s2_modeadapt(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_) { int cur_off = 0, modeadapt_len, modeadapt_type, matched_headers = 0; proto_item *ti, *tf; proto_tree *dvb_s2_modeadapt_tree; proto_tree *dvb_s2_modeadapt_acm_tree; unsigned int modcod, mc; static int * const modeadapt_acm_bitfields[] = { &hf_dvb_s2_modeadapt_acm_fecframe, &hf_dvb_s2_modeadapt_acm_pilot, &hf_dvb_s2_modeadapt_acm_modcod, NULL }; /* Check that there's enough data */ if (tvb_captured_length(tvb) < DVB_S2_MODEADAPT_MINSIZE) return 0; /* There are four different mode adaptation formats, with different length headers. Two of them have a sync byte at the beginning, but the other two do not. In every case, the mode adaptation header is followed by the baseband header, which is protected by a CRC-8. The CRC-8 is weak protection, so it can match by accident, leading to an ambiguity in identifying which format is in use. We will check for ambiguity and report it. */ /* Try L.1 format: no header. */ if (test_dvb_s2_crc(tvb, DVB_S2_MODEADAPT_L1SIZE)) { matched_headers++; modeadapt_type = DVB_S2_MODEADAPT_TYPE_L1; modeadapt_len = DVB_S2_MODEADAPT_L1SIZE; } /* Try L.2 format: header includes sync byte */ if ((tvb_get_guint8(tvb, DVB_S2_MODEADAPT_OFFS_SYNCBYTE) == DVB_S2_MODEADAPT_SYNCBYTE) && test_dvb_s2_crc(tvb, DVB_S2_MODEADAPT_L2SIZE)) { matched_headers++; modeadapt_type = DVB_S2_MODEADAPT_TYPE_L2; modeadapt_len = DVB_S2_MODEADAPT_L2SIZE; } /* Try L.3 format: header includes sync byte */ if ((tvb_get_guint8(tvb, DVB_S2_MODEADAPT_OFFS_SYNCBYTE) == DVB_S2_MODEADAPT_SYNCBYTE) && test_dvb_s2_crc(tvb, DVB_S2_MODEADAPT_L3SIZE)) { matched_headers++; modeadapt_type = DVB_S2_MODEADAPT_TYPE_L3; modeadapt_len = DVB_S2_MODEADAPT_L3SIZE; } /* Try L.4 format: header does not include sync byte */ if (test_dvb_s2_crc(tvb, DVB_S2_MODEADAPT_L4SIZE)) { matched_headers++; modeadapt_type = DVB_S2_MODEADAPT_TYPE_L4; modeadapt_len = DVB_S2_MODEADAPT_L4SIZE; } if (matched_headers == 0) { /* This does not look like a DVB-S2-BB frame at all. We are a heuristic dissector, so we should just punt and let another dissector have a try at this one. */ return 0; } col_set_str(pinfo->cinfo, COL_PROTOCOL, "DVB-S2 "); col_set_str(pinfo->cinfo, COL_INFO, "DVB-S2 "); /* If there's a mode adaptation header, create display subtree for it */ if (modeadapt_len > 0) { /* ti = proto_tree_add_item(tree, proto_dvb_s2_modeadapt, tvb, 0, modeadapt_len, ENC_NA); */ ti = proto_tree_add_protocol_format(tree, proto_dvb_s2_modeadapt, tvb, 0, modeadapt_len, "DVB-S2 Mode Adaptation Header L.%d", modeadapt_type); dvb_s2_modeadapt_tree = proto_item_add_subtree(ti, ett_dvb_s2_modeadapt); if (matched_headers > 1) { expert_add_info_format(pinfo, ti, &ei_dvb_s2_bb_header_ambiguous, "Mode adaptation header format is ambiguous. Assuming L.%d", modeadapt_type); } /* SYNC byte if used in this header format; value has already been checked */ if (modeadapt_type == DVB_S2_MODEADAPT_TYPE_L2 || modeadapt_type == DVB_S2_MODEADAPT_TYPE_L3) { proto_tree_add_item(dvb_s2_modeadapt_tree, hf_dvb_s2_modeadapt_sync, tvb, cur_off, 1, ENC_BIG_ENDIAN); cur_off++; } /* ACM byte and subfields if used in this header format */ if (modeadapt_type == DVB_S2_MODEADAPT_TYPE_L2 || modeadapt_type == DVB_S2_MODEADAPT_TYPE_L3 || modeadapt_type == DVB_S2_MODEADAPT_TYPE_L4) { mc = tvb_get_guint8(tvb, 1); //mc = tvb_get_letohs(tvb, 0); if (mc & 0x80) { modcod = 0x80; modcod |= ((mc & 0x1F) << 2); modcod |= ((mc & 0x40) >> 5); tf = proto_tree_add_item(dvb_s2_modeadapt_tree, hf_dvb_s2_modeadapt_acm, tvb, DVB_S2_MODEADAPT_OFFS_ACMBYTE, 1, ENC_BIG_ENDIAN); dvb_s2_modeadapt_acm_tree = proto_item_add_subtree(tf, ett_dvb_s2_modeadapt_acm); proto_tree_add_item(dvb_s2_modeadapt_acm_tree, hf_dvb_s2_modeadapt_acm_pilot, tvb, DVB_S2_MODEADAPT_OFFS_ACMBYTE, 1, ENC_BIG_ENDIAN); proto_tree_add_uint_format_value(dvb_s2_modeadapt_acm_tree, hf_dvb_s2_modeadapt_acm_modcod_s2x, tvb, DVB_S2_MODEADAPT_OFFS_ACMBYTE, 1, mc, "DVBS2X %s(%d)", modeadapt_modcods[modcod].strptr, modcod); } else { proto_tree_add_bitmask_with_flags(dvb_s2_modeadapt_tree, tvb, DVB_S2_MODEADAPT_OFFS_ACMBYTE, hf_dvb_s2_modeadapt_acm, ett_dvb_s2_modeadapt_acm, modeadapt_acm_bitfields, ENC_BIG_ENDIAN, BMT_NO_FLAGS); } cur_off++; } /* CNI and Frame No if used in this header format */ if (modeadapt_type == DVB_S2_MODEADAPT_TYPE_L3 || modeadapt_type == DVB_S2_MODEADAPT_TYPE_L4) { proto_tree_add_item(dvb_s2_modeadapt_tree, hf_dvb_s2_modeadapt_cni, tvb, cur_off, 1, ENC_BIG_ENDIAN); cur_off++; proto_tree_add_item(dvb_s2_modeadapt_tree, hf_dvb_s2_modeadapt_frameno, tvb, cur_off, 1, ENC_BIG_ENDIAN); cur_off++; } } /* start DVB-BB dissector */ cur_off = dissect_dvb_s2_bb(tvb, cur_off, tree, pinfo); return cur_off; } /* Register the protocol with Wireshark */ void proto_register_dvb_s2_modeadapt(void) { module_t *dvb_s2_modeadapt_module; static hf_register_info hf_modeadapt[] = { {&hf_dvb_s2_modeadapt_sync, { "Sync Byte", "dvb-s2_modeadapt.sync", FT_UINT8, BASE_HEX, NULL, 0x0, "Das Sync Byte", HFILL} }, {&hf_dvb_s2_modeadapt_acm, { "ACM command", "dvb-s2_modeadapt.acmcmd", FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL} }, {&hf_dvb_s2_modeadapt_acm_fecframe, { "FEC frame size", "dvb-s2_modeadapt.acmcmd.fecframe", FT_BOOLEAN, 8, TFS(&tfs_modeadapt_fecframe), DVB_S2_MODEADAPT_FECFRAME_MASK, "FEC", HFILL} }, {&hf_dvb_s2_modeadapt_acm_pilot, { "Pilots configuration", "dvb-s2_modeadapt.acmcmd.pilots", FT_BOOLEAN, 8, TFS(&tfs_modeadapt_pilots), DVB_S2_MODEADAPT_PILOTS_MASK, "Pilots", HFILL} }, {&hf_dvb_s2_modeadapt_acm_modcod, { "Modcod indicator", "dvb-s2_modeadapt.acmcmd.modcod", FT_UINT8, BASE_DEC|BASE_EXT_STRING, &modeadapt_modcods_ext, DVB_S2_MODEADAPT_MODCODS_MASK, "Modcod", HFILL} }, {&hf_dvb_s2_modeadapt_acm_modcod_s2x, { "Modcod indicator", "dvb-s2_modeadapt.acmcmd.modcod", FT_UINT8, BASE_DEC|BASE_EXT_STRING, &modeadapt_modcods_ext, DVB_S2_MODEADAPT_MODCODS_S2X_MASK, "Modcod S2X", HFILL} }, {&hf_dvb_s2_modeadapt_cni, { "Carrier to Noise [dB]", "dvb-s2_modeadapt.cni", FT_UINT8, BASE_DEC|BASE_EXT_STRING, &modeadapt_esno_ext, 0x0, "CNI", HFILL} }, {&hf_dvb_s2_modeadapt_frameno, { "Frame number", "dvb-s2_modeadapt.frameno", FT_UINT8, BASE_DEC, NULL, 0x0, "fno", HFILL} } }; /* Setup protocol subtree array */ static gint *ett_modeadapt[] = { &ett_dvb_s2_modeadapt, &ett_dvb_s2_modeadapt_acm }; static hf_register_info hf_bb[] = { {&hf_dvb_s2_bb_matype1, { "MATYPE1", "dvb-s2_bb.matype1", FT_UINT8, BASE_HEX, NULL, 0x0, "MATYPE1 Header Field", HFILL} }, {&hf_dvb_s2_bb_matype1_gs, { "TS/GS Stream Input", "dvb-s2_bb.matype1.tsgs", FT_UINT8, BASE_DEC, VALS(bb_tsgs), DVB_S2_BB_TSGS_MASK, "Transport Stream Input or Generic Stream Input", HFILL} }, {&hf_dvb_s2_bb_matype1_mis, { "Input Stream", "dvb-s2_bb.matype1.mis", FT_BOOLEAN, 8, TFS(&tfs_bb_mis), DVB_S2_BB_MIS_MASK, "Single Input Stream or Multiple Input Stream", HFILL} }, {&hf_dvb_s2_bb_matype1_acm, { "Coding and Modulation", "dvb-s2_bb.matype1.acm", FT_BOOLEAN, 8, TFS(&tfs_bb_acm), DVB_S2_BB_ACM_MASK, "Constant Coding and Modulation or Adaptive Coding and Modulation", HFILL} }, {&hf_dvb_s2_bb_matype1_issyi, { "ISSYI", "dvb-s2_bb.matype1.issyi", FT_BOOLEAN, 8, TFS(&tfs_bb_issyi), DVB_S2_BB_ISSYI_MASK, "Input Stream Synchronization Indicator", HFILL} }, {&hf_dvb_s2_bb_matype1_npd, { "NPD", "dvb-s2_bb.matype1.npd", FT_BOOLEAN, 8, TFS(&tfs_bb_npd), DVB_S2_BB_NPD_MASK, "Null-packet deletion enabled", HFILL} }, {&hf_dvb_s2_bb_matype1_high_ro, { "RO", "dvb-s2_bb.matype1.ro", FT_UINT8, BASE_DEC, VALS(bb_high_ro), DVB_S2_BB_RO_MASK, "Transmission Roll-off factor", HFILL} }, {&hf_dvb_s2_bb_matype1_low_ro, { "RO", "dvb-s2_bb.matype1.ro", FT_UINT8, BASE_DEC, VALS(bb_low_ro), DVB_S2_BB_RO_MASK, "Transmission Roll-off factor", HFILL} }, {&hf_dvb_s2_bb_matype2, { "MATYPE2", "dvb-s2_bb.matype2", FT_UINT8, BASE_HEX, NULL, 0x0, "MATYPE2 Header Field", HFILL} }, {&hf_dvb_s2_bb_upl, { "UPL", "dvb-s2_bb.upl", FT_UINT16, BASE_HEX, NULL, 0x0, "User Packet Length", HFILL} }, {&hf_dvb_s2_bb_dfl, { "DFL", "dvb-s2_bb.dfl", FT_UINT16, BASE_HEX, NULL, 0x0, "Data Field Length", HFILL} }, {&hf_dvb_s2_bb_sync, { "SYNC", "dvb-s2_bb.sync", FT_UINT8, BASE_HEX, NULL, 0x0, "Copy of the User Packet Sync-byte", HFILL} }, {&hf_dvb_s2_bb_syncd, { "SYNCD", "dvb-s2_bb.syncd", FT_UINT16, BASE_HEX, NULL, 0x0, "Distance to first user packet", HFILL} }, {&hf_dvb_s2_bb_crc, { "Checksum", "dvb-s2_bb.crc", FT_UINT8, BASE_HEX, NULL, 0x0, "BB Header CRC-8", HFILL} }, {&hf_dvb_s2_bb_crc_status, { "Checksum Status", "dvb-s2_bb.crc.status", FT_UINT8, BASE_NONE, VALS(proto_checksum_vals), 0x0, NULL, HFILL} }, {&hf_dvb_s2_bb_packetized, { "Packetized Generic Stream Data", "dvb-s2_bb.packetized", FT_BYTES, BASE_NONE, NULL, 0x0, "Packetized Generic Stream (non-TS) Data", HFILL} }, {&hf_dvb_s2_bb_transport, { "Transport Stream Data", "dvb-s2_bb.transport", FT_BYTES, BASE_NONE, NULL, 0x0, "Transport Stream (TS) Data", HFILL} }, {&hf_dvb_s2_bb_reserved, { "Reserved Stream Type Data", "dvb-s2_bb.reserved", FT_BYTES, BASE_NONE, NULL, 0x0, "Stream of an unknown reserved type", HFILL} }, {&hf_dvb_s2_bb_df, { "BBFrame user data", "dvb-s2_bb.df", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL} }, {&hf_dvb_s2_bb_eip_crc32, { "EIP CRC32", "dvb-s2_bb.eip_crc32", FT_UINT32, BASE_HEX, NULL, 0x0, "Explicit Integrity Protection CRC32", HFILL} } }; static gint *ett_bb[] = { &ett_dvb_s2_bb, &ett_dvb_s2_bb_matype1 }; /* DVB-S2 GSE Frame */ static hf_register_info hf_gse[] = { {&hf_dvb_s2_gse_hdr, { "GSE header", "dvb-s2_gse.hdr", FT_UINT16, BASE_HEX, NULL, 0x0, "GSE Header (start/stop/length)", HFILL} }, {&hf_dvb_s2_gse_hdr_start, { "Start", "dvb-s2_gse.hdr.start", FT_BOOLEAN, 16, TFS(&tfs_gse_ss), DVB_S2_GSE_HDR_START_MASK, "Start Indicator", HFILL} }, {&hf_dvb_s2_gse_hdr_stop, { "Stop", "dvb-s2_gse.hdr.stop", FT_BOOLEAN, 16, TFS(&tfs_gse_ss), DVB_S2_GSE_HDR_STOP_MASK, "Stop Indicator", HFILL} }, {&hf_dvb_s2_gse_hdr_labeltype, { "Label Type", "dvb-s2_gse.hdr.labeltype", FT_UINT16, BASE_HEX, VALS(gse_labeltype), DVB_S2_GSE_HDR_LABELTYPE_MASK, "Label Type Indicator", HFILL} }, {&hf_dvb_s2_gse_hdr_length, { "Length", "dvb-s2_gse.hdr.length", FT_UINT16, BASE_DEC, NULL, DVB_S2_GSE_HDR_LENGTH_MASK, "GSE Length", HFILL} }, {&hf_dvb_s2_gse_padding, { "GSE Padding", "dvb-s2_gse.padding", FT_UINT16, BASE_DEC, NULL, 0x0, "GSE Padding Bytes", HFILL} }, {&hf_dvb_s2_gse_proto_next_header, { "Protocol", "dvb-s2_gse.proto", FT_UINT16, BASE_HEX, VALS(gse_proto_next_header_str), 0x0, "Protocol Type", HFILL} }, {&hf_dvb_s2_gse_proto_ethertype, { "Protocol", "dvb-s2_gse.proto", FT_UINT16, BASE_HEX, VALS(etype_vals), 0x0, "Protocol Type", HFILL} }, {&hf_dvb_s2_gse_label6, { "Label", "dvb-s2_gse.label_ether", FT_ETHER, BASE_NONE, NULL, 0x0, "Label Field", HFILL} }, {&hf_dvb_s2_gse_label3, { "Label", "dvb-s2_gse.label", FT_UINT24, BASE_HEX, NULL, 0x0, "Label Field", HFILL} }, {&hf_dvb_s2_gse_fragid, { "Frag ID", "dvb-s2_gse.fragid", FT_UINT8, BASE_HEX, NULL, 0x0, "Fragment ID", HFILL} }, {&hf_dvb_s2_gse_totlength, { "Total Length", "dvb-s2_gse.totlength", FT_UINT16, BASE_DEC, NULL, 0x0, "GSE Total Frame Length", HFILL} }, {&hf_dvb_s2_gse_exthdr, { "Extension Header", "dvb-s2_gse.exthdr", FT_UINT8, BASE_HEX, NULL, 0x0, "optional Extension Header", HFILL} }, {&hf_dvb_s2_gse_ncr, { "NCR Packet", "dvb-s2_gse.ncr", FT_BYTES, BASE_NONE, NULL, 0x0, "GSE NCR PAcket", HFILL} }, {&hf_dvb_s2_gse_data, { "PDU Data", "dvb-s2_gse.data", FT_BYTES, BASE_NONE, NULL, 0x0, "GSE Frame User Data", HFILL} }, {&hf_dvb_s2_gse_crc32, { "CRC", "dvb-s2_gse.crc", FT_UINT32, BASE_HEX, NULL, 0x0, "CRC-32", HFILL} }, { &hf_dvbs2_fragment_overlap, { "Fragment overlap", "dvb-s2_gse.fragment.overlap", FT_BOOLEAN, BASE_NONE, NULL, 0x0, "Fragment overlaps with other fragments", HFILL }}, { &hf_dvbs2_fragment_overlap_conflict, { "Conflicting data in fragment overlap", "dvb-s2_gse.fragment.overlap.conflict", FT_BOOLEAN, BASE_NONE, NULL, 0x0, "Overlapping fragments contained conflicting data", HFILL }}, { &hf_dvbs2_fragment_multiple_tails, { "Multiple tail fragments found", "dvb-s2_gse.fragment.multipletails", FT_BOOLEAN, BASE_NONE, NULL, 0x0, "Several tails were found when defragmenting the packet", HFILL }}, { &hf_dvbs2_fragment_too_long_fragment, { "Fragment too long", "dvb-s2_gse.fragment.toolongfragment", FT_BOOLEAN, BASE_NONE, NULL, 0x0, "Fragment contained data past end of packet", HFILL }}, { &hf_dvbs2_fragment_error, { "Defragmentation error", "dvb-s2_gse.fragment.error", FT_FRAMENUM, BASE_NONE, NULL, 0x0, "Defragmentation error due to illegal fragments", HFILL }}, { &hf_dvbs2_fragment_count, { "Fragment count", "dvb-s2_gse.fragment.count", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_dvbs2_fragment, { "DVB-S2 GSE Fragment", "dvb-s2_gse.fragment", FT_FRAMENUM, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_dvbs2_fragments, { "DVB-S2 GSE Fragments", "dvb-s2_gse.fragments", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_dvbs2_reassembled_in, { "Reassembled DVB-S2 GSE in frame", "dvb-s2_gse.reassembled_in", FT_FRAMENUM, BASE_NONE, NULL, 0x0, "This GSE packet is reassembled in this frame", HFILL }}, { &hf_dvbs2_reassembled_length, { "Reassembled DVB-S2 GSE length", "dvb-s2_gse.reassembled.length", FT_UINT32, BASE_DEC, NULL, 0x0, "The total length of the reassembled payload", HFILL }}, { &hf_dvbs2_reassembled_data, { "Reassembled DVB-S2 GSE data", "dvb-s2_gse.reassembled.data", FT_BYTES, BASE_NONE, NULL, 0x0, "The reassembled payload", HFILL }} }; static gint *ett_gse[] = { &ett_dvb_s2_gse, &ett_dvb_s2_gse_hdr, &ett_dvb_s2_gse_ncr, &ett_dvbs2_fragments, &ett_dvbs2_fragment, }; static ei_register_info ei[] = { { &ei_dvb_s2_bb_crc, { "dvb-s2_bb.bad_checksum", PI_CHECKSUM, PI_ERROR, "Bad checksum", EXPFILL }}, { &ei_dvb_s2_bb_issy_invalid, {"dvb-s2_bb.issy_invalid", PI_PROTOCOL, PI_WARN, "ISSY is active, which is not allowed for GSE packets", EXPFILL }}, { &ei_dvb_s2_bb_npd_invalid, {"dvb-s2_bb.npd_invalid", PI_PROTOCOL, PI_WARN, "NPD is active, which is not allowed for GSE packets", EXPFILL }}, { &ei_dvb_s2_bb_upl_invalid, {"dvb-s2_bb.upl_invalid", PI_PROTOCOL, PI_WARN, "User Packet Length non-zero, which is not allowed for GSE packets", EXPFILL }}, { &ei_dvb_s2_bb_reserved, {"dvb-s2_bb.reserved_frame_format", PI_PROTOCOL, PI_WARN, "Reserved frame format in TS/GS is not defined", EXPFILL }}, { &ei_dvb_s2_bb_header_ambiguous, { "dvb-s2_bb.header_ambiguous", PI_ASSUMPTION, PI_WARN, "Mode Adaptation header ambiguous", EXPFILL }}, }; expert_module_t* expert_dvb_s2_bb; proto_dvb_s2_modeadapt = proto_register_protocol("DVB-S2 Mode Adaptation Header", "DVB-S2", "dvb-s2_modeadapt"); proto_dvb_s2_bb = proto_register_protocol("DVB-S2 Baseband Frame", "DVB-S2-BB", "dvb-s2_bb"); proto_dvb_s2_gse = proto_register_protocol("DVB-S2 GSE Packet", "DVB-S2-GSE", "dvb-s2_gse"); proto_register_field_array(proto_dvb_s2_modeadapt, hf_modeadapt, array_length(hf_modeadapt)); proto_register_subtree_array(ett_modeadapt, array_length(ett_modeadapt)); proto_register_field_array(proto_dvb_s2_bb, hf_bb, array_length(hf_bb)); proto_register_subtree_array(ett_bb, array_length(ett_bb)); expert_dvb_s2_bb = expert_register_protocol(proto_dvb_s2_bb); expert_register_field_array(expert_dvb_s2_bb, ei, array_length(ei)); proto_register_field_array(proto_dvb_s2_gse, hf_gse, array_length(hf_gse)); proto_register_subtree_array(ett_gse, array_length(ett_gse)); dvb_s2_modeadapt_module = prefs_register_protocol(proto_dvb_s2_modeadapt, proto_reg_handoff_dvb_s2_modeadapt); prefs_register_obsolete_preference(dvb_s2_modeadapt_module, "enable"); prefs_register_bool_preference(dvb_s2_modeadapt_module, "decode_df", "Enable dissection of DATA FIELD", "Check this to enable full protocol dissection of data above BBHeader", &dvb_s2_df_dissection); prefs_register_bool_preference(dvb_s2_modeadapt_module, "full_decode", "Enable dissection of GSE data", "Check this to enable full protocol dissection of data above GSE Layer", &dvb_s2_full_dissection); register_init_routine(dvbs2_defragment_init); } void proto_reg_handoff_dvb_s2_modeadapt(void) { static gboolean prefs_initialized = FALSE; if (!prefs_initialized) { heur_dissector_add("udp", dissect_dvb_s2_modeadapt, "DVB-S2 over UDP", "dvb_s2_udp", proto_dvb_s2_modeadapt, HEURISTIC_DISABLE); ip_handle = find_dissector_add_dependency("ip", proto_dvb_s2_bb); ipv6_handle = find_dissector_add_dependency("ipv6", proto_dvb_s2_bb); dvb_s2_table_handle = find_dissector("dvb-s2_table"); eth_withoutfcs_handle = find_dissector("eth_withoutfcs"); data_handle = find_dissector("data"); prefs_initialized = TRUE; } } /* * Editor modelines - https://www.wireshark.org/tools/modelines.html * * Local variables: * c-basic-offset: 4 * tab-width: 8 * indent-tabs-mode: nil * End: * * vi: set shiftwidth=4 tabstop=8 expandtab: * :indentSize=4:tabSize=8:noTabs=true: */