/* packet-l2tp.c * Routines for Layer Two Tunnelling Protocol (L2TP) packet disassembly * John Thomes * * Minor changes by: (2000-01-10) * Laurent Cazalet * Thomas Parvais * * Added RFC 5515 by Uli Heilmeier , 2016-02-29 * * Ericsson L2TP by Harald Welte , 2016-07-16 * * Wireshark - Network traffic analyzer * By Gerald Combs * Copyright 1998 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. */ /* * RFC 2661 for L2TPv2 * http://tools.ietf.org/html/rfc2661 * * RFC 3931 for L2TPv3 * http://tools.ietf.org/html/rfc3931 * * Layer Two Tunneling Protocol "L2TP" number assignments: * http://www.iana.org/assignments/l2tp-parameters * * Pseudowire types: * * RFC 4591 for Frame Relay * http://tools.ietf.org/html/rfc4591 * * RFC 4454 for ATM * http://tools.ietf.org/html/rfc4454 * * RFC 4719 for Ethernet * http://tools.ietf.org/html/rfc4719 * * RFC 4349 for HDLC * http://tools.ietf.org/html/rfc4349 * * XXX - what about LAPD? */ #include "config.h" #include #include #include #include #include #include #include #include #include #include #include "packet-l2tp.h" void proto_register_l2tp(void); void proto_reg_handoff_l2tp(void); static int proto_l2tp = -1; static int hf_l2tp_type = -1; static int hf_l2tp_length_bit = -1; static int hf_l2tp_seq_bit = -1; static int hf_l2tp_offset_bit = -1; static int hf_l2tp_priority = -1; static int hf_l2tp_version = -1; static int hf_l2tp_length = -1; static int hf_l2tp_tunnel = -1; static int hf_l2tp_session = -1; static int hf_l2tp_Ns = -1; static int hf_l2tp_Nr = -1; static int hf_l2tp_offset = -1; static int hf_l2tp_avp_mandatory = -1; static int hf_l2tp_avp_hidden = -1; static int hf_l2tp_avp_length = -1; static int hf_l2tp_avp_vendor_id = -1; static int hf_l2tp_avp_type = -1; static int hf_l2tp_tie_breaker = -1; static int hf_l2tp_sid = -1; static int hf_l2tp_res = -1; static int hf_l2tp_ccid = -1; static int hf_l2tp_cookie = -1; static int hf_l2tp_l2_spec_def = -1; static int hf_l2tp_l2_spec_atm = -1; static int hf_l2tp_l2_spec_docsis_dmpt = -1; static int hf_l2tp_l2_spec_v = -1; static int hf_l2tp_l2_spec_s = -1; static int hf_l2tp_l2_spec_h = -1; static int hf_l2tp_l2_spec_flow_id = -1; static int hf_l2tp_l2_spec_sequence = -1; static int hf_l2tp_l2_spec_t = -1; static int hf_l2tp_l2_spec_g = -1; static int hf_l2tp_l2_spec_c = -1; static int hf_l2tp_l2_spec_u = -1; static int hf_l2tp_cisco_avp_type = -1; static int hf_l2tp_ericsson_avp_type = -1; static int hf_l2tp_broadband_avp_type = -1; static int hf_l2tp_cablelabs_avp_type = -1; static int hf_l2tp_avp_message_type = -1; static int hf_l2tp_avp_assigned_tunnel_id = -1; static int hf_l2tp_avp_assigned_control_conn_id = -1; static int hf_l2tp_avp_assigned_session_id = -1; static int hf_l2tp_avp_remote_session_id = -1; static int hf_l2tp_avp_local_session_id = -1; static int hf_l2tp_avp_called_number = -1; static int hf_l2tp_avp_calling_number = -1; static int hf_l2tp_cisco_tie_breaker = -1; static int hf_l2tp_cablel_avp_l_bit = -1; static int hf_l2tp_cablel_avp_tsid_group_id = -1; static int hf_l2tp_cablel_avp_frequency = -1; static int hf_l2tp_cablel_avp_modulation = -1; static int hf_l2tp_cablel_avp_m = -1; static int hf_l2tp_cablel_avp_n = -1; static int hf_l2tp_broadband_agent_circuit_id = -1; static int hf_l2tp_broadband_agent_remote_id = -1; static int hf_l2tp_broadband_actual_dr_up = -1; static int hf_l2tp_broadband_actual_dr_down = -1; static int hf_l2tp_broadband_minimum_dr_up = -1; static int hf_l2tp_broadband_minimum_dr_down = -1; static int hf_l2tp_broadband_attainable_dr_up = -1; static int hf_l2tp_broadband_attainable_dr_down = -1; static int hf_l2tp_broadband_maximum_dr_up = -1; static int hf_l2tp_broadband_maximum_dr_down = -1; static int hf_l2tp_broadband_minimum_dr_up_low_power = -1; static int hf_l2tp_broadband_minimum_dr_down_low_power = -1; static int hf_l2tp_broadband_maximum_interleaving_delay_up = -1; static int hf_l2tp_broadband_actual_interleaving_delay_up = -1; static int hf_l2tp_broadband_maximum_interleaving_delay_down = -1; static int hf_l2tp_broadband_actual_interleaving_delay_down = -1; static int hf_l2tp_broadband_access_loop_encapsulation = -1; static int hf_l2tp_broadband_access_loop_encapsulation_data_link = -1; static int hf_l2tp_broadband_access_loop_encapsulation_enc1 = -1; static int hf_l2tp_broadband_access_loop_encapsulation_enc2 = -1; static int hf_l2tp_broadband_ancp_access_line_type = -1; static int hf_l2tp_broadband_iwf_session = -1; static int hf_l2tp_avp_csu = -1; static int hf_l2tp_avp_csu_res = -1; static int hf_l2tp_avp_csu_remote_session_id_v2 = -1; static int hf_l2tp_avp_csu_current_tx_speed_v2 = -1; static int hf_l2tp_avp_csu_current_rx_speed_v2 = -1; static int hf_l2tp_avp_csu_remote_session_id_v3 = -1; static int hf_l2tp_avp_csu_current_tx_speed_v3 = -1; static int hf_l2tp_avp_csu_current_rx_speed_v3 = -1; static int hf_l2tp_ericsson_msg_type = -1; static int hf_l2tp_ericsson_conn_type = -1; static int hf_l2tp_ericsson_stn_name = -1; static int hf_l2tp_ericsson_crc32_enable = -1; static int hf_l2tp_ericsson_abis_lower_mode = -1; static int hf_l2tp_ericsson_tc_overl_thresh = -1; static int hf_l2tp_ericsson_tc_num_groups = -1; static int hf_l2tp_ericsson_tcg_group_id = -1; static int hf_l2tp_ericsson_tcg_num_sapis = -1; static int hf_l2tp_ericsson_tcg_sapi = -1; static int hf_l2tp_ericsson_tcg_ip = -1; static int hf_l2tp_ericsson_tcg_dscp = -1; static int hf_l2tp_ericsson_tcg_crc32_enable = -1; static int hf_l2tp_ericsson_tcg_bundling_tout = -1; static int hf_l2tp_ericsson_tcg_bundling_max_pkt = -1; static int hf_l2tp_ericsson_tc_num_maps = -1; static int hf_l2tp_ericsson_map_tei_low = -1; static int hf_l2tp_ericsson_map_tei_high = -1; static int hf_l2tp_ericsson_map_sc = -1; static int hf_l2tp_ericsson_ver_pref = -1; static int hf_l2tp_ericsson_ver_2 = -1; static int hf_l2tp_ericsson_ver_3 = -1; /* Generated from convert_proto_tree_add_text.pl */ static int hf_l2tp_cisco_pw_type = -1; static int hf_l2tp_avp_error_code = -1; static int hf_l2tp_avp_cause_msg = -1; static int hf_l2tp_avp_host_name = -1; static int hf_l2tp_avp_maximum_bps = -1; static int hf_l2tp_avp_pseudowire_type = -1; static int hf_l2tp_avp_minimum_bps = -1; static int hf_l2tp_avp_nonce = -1; static int hf_l2tp_avp_circuit_status = -1; static int hf_l2tp_avp_receive_window_size = -1; static int hf_l2tp_avp_vendor_name = -1; static int hf_l2tp_avp_layer2_specific_sublayer = -1; static int hf_l2tp_avp_disconnect_code = -1; static int hf_l2tp_cisco_circuit_status = -1; static int hf_l2tp_cisco_remote_session_id = -1; static int hf_l2tp_avp_router_id = -1; static int hf_l2tp_avp_send_accm = -1; static int hf_l2tp_avp_last_sent_lcp_confreq = -1; static int hf_l2tp_avp_sync_framing_supported = -1; static int hf_l2tp_cisco_assigned_control_connection_id = -1; static int hf_l2tp_avp_sync_framing_type = -1; static int hf_l2tp_avp_assigned_cookie = -1; static int hf_l2tp_avp_time_out_errors = -1; static int hf_l2tp_avp_sub_address = -1; static int hf_l2tp_avp_connect_speed = -1; static int hf_l2tp_avp_analog_access_supported = -1; static int hf_l2tp_avp_private_group_id = -1; static int hf_l2tp_avp_proxy_authen_response = -1; static int hf_l2tp_avp_chap_challenge = -1; static int hf_l2tp_avp_call_serial_number = -1; static int hf_l2tp_avp_digital_access_supported = -1; static int hf_l2tp_avp_physical_channel = -1; static int hf_l2tp_avp_advisory_msg = -1; static int hf_l2tp_avp_data_sequencing = -1; static int hf_l2tp_avp_control_protocol_number = -1; static int hf_l2tp_avp_error_message = -1; static int hf_l2tp_avp_initial_received_lcp_confreq = -1; static int hf_l2tp_avp_async_framing_supported = -1; static int hf_l2tp_cisco_message_digest = -1; static int hf_l2tp_avp_circuit_type = -1; static int hf_l2tp_cisco_circuit_type = -1; static int hf_l2tp_avp_proxy_authen_challenge = -1; static int hf_l2tp_cisco_assigned_cookie = -1; static int hf_l2tp_avp_receive_accm = -1; static int hf_l2tp_stop_ccn_result_code = -1; static int hf_l2tp_avp_proxy_authen_id = -1; static int hf_l2tp_avp_digital_bearer_type = -1; static int hf_l2tp_avp_rx_connect_speed = -1; static int hf_l2tp_cisco_nonce = -1; static int hf_l2tp_avp_chap_challenge_response = -1; static int hf_l2tp_avp_cause_code = -1; static int hf_l2tp_avp_protocol_revision = -1; static int hf_l2tp_avp_alignment_errors = -1; static int hf_l2tp_avp_last_received_lcp_confreq = -1; static int hf_l2tp_avp_crc_errors = -1; static int hf_l2tp_avp_random_vector = -1; static int hf_l2tp_avp_preferred_language = -1; static int hf_l2tp_cisco_interface_mtu = -1; static int hf_l2tp_avp_async_framing_type = -1; static int hf_l2tp_avp_pw_type = -1; static int hf_l2tp_cisco_local_session_id = -1; static int hf_l2tp_avp_hardware_overruns = -1; static int hf_l2tp_avp_proxy_authen_type = -1; static int hf_l2tp_cisco_draft_avp_version = -1; static int hf_l2tp_avp_protocol_version = -1; static int hf_l2tp_result_code = -1; static int hf_l2tp_avp_buffer_overruns = -1; static int hf_l2tp_avp_remote_end_id = -1; static int hf_l2tp_cisco_pseudowire_type = -1; static int hf_l2tp_avp_message_digest = -1; static int hf_l2tp_avp_proxy_authen_name = -1; static int hf_l2tp_avp_analog_bearer_type = -1; static int hf_l2tp_avp_cause_code_direction = -1; static int hf_l2tp_avp_firmware_revision = -1; static int hf_l2tp_avp_cause_code_message = -1; static int hf_l2tp_avp_framing_errors = -1; static int hf_l2tp_cisco_remote_end_id = -1; static int hf_l2tp_avp_tx_connect_speed_v3 = -1; static int hf_l2tp_avp_rx_connect_speed_v3 = -1; static int hf_l2tp_lapd_info = -1; static int hf_l2tp_session_id = -1; static int hf_l2tp_zero_length_body_message = -1; static int hf_l2tp_offset_padding = -1; static dissector_table_t l2tp_vendor_avp_dissector_table; static dissector_table_t pw_type_table; #define UDP_PORT_L2TP 1701 #define CONTROL_BIT(msg_info) (msg_info & 0x8000) /* Type bit control = 1 data = 0 */ #define LENGTH_BIT(msg_info) (msg_info & 0x4000) /* Length bit = 1 */ #define RESERVE_BITS(msg_info) (msg_info &0x37F8) /* Reserved bit - unused */ #define SEQUENCE_BIT(msg_info) (msg_info & 0x0800) /* SEQUENCE bit = 1 Ns and Nr fields */ #define OFFSET_BIT(msg_info) (msg_info & 0x0200) /* Offset */ #define PRIORITY_BIT(msg_info) (msg_info & 0x0100) /* Priority */ #define L2TP_VERSION(msg_info) (msg_info & 0x000f) /* Version of l2tp */ #define MANDATORY_BIT(msg_info) (msg_info & 0x8000) /* Mandatory = 1 */ #define HIDDEN_BIT(msg_info) (msg_info & 0x4000) /* Hidden = 1 */ #define AVP_LENGTH(msg_info) (msg_info & 0x03ff) /* AVP Length */ #define FRAMING_SYNC(msg_info) (msg_info & 0x0001) /* SYNC Framing Type */ #define FRAMING_ASYNC(msg_info) (msg_info & 0x0002) /* ASYNC Framing Type */ #define BEARER_DIGITAL(msg_info) (msg_info & 0x0001) /* Digital Bearer Type */ #define BEARER_ANALOG(msg_info) (msg_info & 0x0002) /* Analog Bearer Type */ #define CIRCUIT_STATUS_BIT(msg_info) (msg_info & 0x0001) /* Circuit Status */ #define CIRCUIT_TYPE_BIT(msg_info) (msg_info & 0x0001) /* Circuit Condition */ /* DOCSIS DMPT Sub-Layer Header definitions */ #define FLOW_ID_MASK 0x0E static gint ett_l2tp = -1; static gint ett_l2tp_ctrl = -1; static gint ett_l2tp_avp = -1; static gint ett_l2tp_avp_sub = -1; static gint ett_l2tp_ale_sub = -1; static gint ett_l2tp_lcp = -1; static gint ett_l2tp_l2_spec = -1; static gint ett_l2tp_csu = -1; static gint ett_l2tp_ericsson_tcg = -1; static gint ett_l2tp_ericsson_map = -1; static expert_field ei_l2tp_incorrect_digest = EI_INIT; /* Generated from convert_proto_tree_add_text.pl */ static expert_field ei_l2tp_vendor_specific_avp_data = EI_INIT; static expert_field ei_l2tp_avp_length = EI_INIT; static const enum_val_t l2tpv3_cookies[] = { {"detect", "Detect", -1}, {"cookie0", "None", 0}, {"cookie4", "4 Byte Cookie", 4}, {"cookie8", "8 Byte Cookie", 8}, {NULL, NULL, 0} }; #define L2TPv3_COOKIE_DEFAULT 0 #define L2TPv3_PROTOCOL_DEFAULT L2TPv3_PROTOCOL_CHDLC #define L2TPv3_L2_SPECIFIC_NONE 0 #define L2TPv3_L2_SPECIFIC_DEFAULT 1 #define L2TPv3_L2_SPECIFIC_ATM 2 #define L2TPv3_L2_SPECIFIC_LAPD 3 #define L2TPv3_L2_SPECIFIC_DOCSIS_DMPT 4 #define L2TPv3_L2_SPECIFIC_MAX (L2TPv3_L2_SPECIFIC_DOCSIS_DMPT + 1) static const enum_val_t l2tpv3_l2_specifics[] = { {"detect", "Detect", -1}, {"none", "None", L2TPv3_L2_SPECIFIC_NONE}, {"default", "Default L2-Specific", L2TPv3_L2_SPECIFIC_DEFAULT}, {"atm", "ATM-Specific", L2TPv3_L2_SPECIFIC_ATM}, {"lapd", "LAPD-Specific", L2TPv3_L2_SPECIFIC_LAPD}, {"dmpt", "DOCSIS DMPT-Specific", L2TPv3_L2_SPECIFIC_DOCSIS_DMPT}, {NULL, NULL, 0} }; static gint l2tpv3_cookie = -1; static gint l2tpv3_l2_specific = -1; #define MESSAGE_TYPE_SCCRQ 1 #define MESSAGE_TYPE_SCCRP 2 #define MESSAGE_TYPE_SCCCN 3 #define MESSAGE_TYPE_StopCCN 4 #define MESSAGE_TYPE_Reserved_5 5 #define MESSAGE_TYPE_HELLO 6 #define MESSAGE_TYPE_OCRQ 7 #define MESSAGE_TYPE_OCRP 8 #define MESSAGE_TYPE_OCCN 9 #define MESSAGE_TYPE_ICRQ 10 #define MESSAGE_TYPE_ICRP 11 #define MESSAGE_TYPE_ICCN 12 #define MESSAGE_TYPE_Reserved_13 13 #define MESSAGE_TYPE_CDN 14 #define MESSAGE_TYPE_WEN 15 #define MESSAGE_TYPE_SLI 16 #define MESSAGE_TYPE_MDMST 17 #define MESSAGE_TYPE_SRRQ 18 #define MESSAGE_TYPE_SRRP 19 #define MESSAGE_TYPE_ACK 20 #define MESSAGE_TYPE_FSQ 21 #define MESSAGE_TYPE_FSR 22 #define MESSAGE_TYPE_MSRQ 23 #define MESSAGE_TYPE_MSRP 24 #define MESSAGE_TYPE_MSE 25 #define MESSAGE_TYPE_MSI 26 #define MESSAGE_TYPE_MSEN 27 #define MESSAGE_TYPE_CSUN 28 #define MESSAGE_TYPE_CSURQ 29 static const value_string message_type_vals[] = { { MESSAGE_TYPE_SCCRQ, "Start_Control_Request" }, { MESSAGE_TYPE_SCCRP, "Start_Control_Reply" }, { MESSAGE_TYPE_SCCCN, "Start_Control_Connected" }, { MESSAGE_TYPE_StopCCN, "Stop_Control_Notification" }, { MESSAGE_TYPE_Reserved_5, "Reserved" }, { MESSAGE_TYPE_HELLO, "Hello" }, { MESSAGE_TYPE_OCRQ, "Outgoing_Call_Request" }, { MESSAGE_TYPE_OCRP, "Outgoing_Call_Reply" }, { MESSAGE_TYPE_OCCN, "Outgoing_Call_Connected" }, { MESSAGE_TYPE_ICRQ, "Incoming_Call_Request" }, { MESSAGE_TYPE_ICRP, "Incoming_Call_Reply" }, { MESSAGE_TYPE_ICCN, "Incoming_Call_Connected" }, { MESSAGE_TYPE_Reserved_13, "Reserved" }, { MESSAGE_TYPE_CDN, "Call_Disconnect_Notification" }, { MESSAGE_TYPE_WEN, "WAN_Error_Notify" }, { MESSAGE_TYPE_SLI, "Set_Link_Info" }, { MESSAGE_TYPE_MDMST, "Modem_Status" }, { MESSAGE_TYPE_SRRQ, "Service_Relay_Request_Msg" }, { MESSAGE_TYPE_SRRP, "Service_Relay_Reply_Message" }, { MESSAGE_TYPE_ACK, "Explicit_Acknowledgement" }, /* Fail Over Extensions - RFC4951 */ { MESSAGE_TYPE_FSQ, "Failover_Session_Query_Message" }, { MESSAGE_TYPE_FSR, "Failover_Session_Response_Message" }, /* Multicast Management - RFC4045 */ { MESSAGE_TYPE_MSRQ, "Multicast-Session-Request" }, { MESSAGE_TYPE_MSRP, "Multicast-Session-Response" }, { MESSAGE_TYPE_MSE, "Multicast-Session-Establishment" }, { MESSAGE_TYPE_MSI, "Multicast-Session-Information" }, { MESSAGE_TYPE_MSEN, "Multicast-Session-End-Notify" }, { MESSAGE_TYPE_CSUN, "Connect-Speed-Update-Notification" }, { MESSAGE_TYPE_CSURQ, "Connect-Speed-Update-Request" }, { 0, NULL }, }; static value_string_ext message_type_vals_ext = VALUE_STRING_EXT_INIT(message_type_vals); static const value_string l2tp_message_type_short_str_vals[] = { { MESSAGE_TYPE_SCCRQ, "SCCRQ" }, { MESSAGE_TYPE_SCCRP, "SCCRP" }, { MESSAGE_TYPE_SCCCN, "SCCCN" }, { MESSAGE_TYPE_StopCCN, "StopCCN" }, { 5, "Reserved"}, { MESSAGE_TYPE_HELLO, "Hello" }, { MESSAGE_TYPE_OCRQ, "OCRQ" }, { MESSAGE_TYPE_OCRP, "OCRP" }, { MESSAGE_TYPE_OCCN, "OCCN" }, { MESSAGE_TYPE_ICRQ, "ICRQ" }, { MESSAGE_TYPE_ICRP, "ICRP" }, { MESSAGE_TYPE_ICCN, "ICCN" }, { 13, "Reserved"}, { MESSAGE_TYPE_CDN, "CDN" }, { MESSAGE_TYPE_WEN, "WEN" }, { MESSAGE_TYPE_SLI, "SLI" }, { MESSAGE_TYPE_MDMST, "MDMST" }, { MESSAGE_TYPE_SRRQ, "SRRQ" }, { MESSAGE_TYPE_SRRP, "SRRP" }, { MESSAGE_TYPE_ACK, "ACK" }, /* Fail Over Extensions - RFC4951 */ { MESSAGE_TYPE_FSQ, "FSQ" }, { MESSAGE_TYPE_FSR, "FSR" }, /* Multicast Management - RFC4045 */ { MESSAGE_TYPE_MSRQ, "MSRQ" }, { MESSAGE_TYPE_MSRP, "MSRP" }, { MESSAGE_TYPE_MSE, "MSE" }, { MESSAGE_TYPE_MSI, "MSI" }, { MESSAGE_TYPE_MSEN, "MSEN" }, { MESSAGE_TYPE_CSUN, "CSUN" }, { MESSAGE_TYPE_CSURQ, "CSURQ" }, { 0, NULL }, }; static value_string_ext l2tp_message_type_short_str_vals_ext = VALUE_STRING_EXT_INIT(l2tp_message_type_short_str_vals); static const char *control_msg = "Control Message"; static const char *data_msg = "Data Message"; static const value_string l2tp_type_vals[] = { { 0, "Data Message" }, { 1, "Control Message" }, { 0, NULL }, }; static const value_string cause_code_direction_vals[] = { { 0, "global error" }, { 1, "at peer" }, { 2, "at local" }, { 0, NULL }, }; static const true_false_string l2tp_length_bit_truth = { "Length field is present", "Length field is not present" }; static const true_false_string l2tp_seq_bit_truth = { "Ns and Nr fields are present", "Ns and Nr fields are not present" }; static const true_false_string l2tp_offset_bit_truth = { "Offset Size field is present", "Offset size field is not present" }; static const true_false_string l2tp_priority_truth = { "This data message has priority", "No priority" }; static const value_string authen_type_vals[] = { { 0, "Reserved" }, { 1, "Textual username/password exchange" }, { 2, "PPP CHAP" }, { 3, "PPP PAP" }, { 4, "No Authentication" }, { 5, "Microsoft CHAP Version 1" }, { 6, "Reserved" }, { 7, "EAP" }, { 0, NULL } }; static const value_string data_sequencing_vals[] = { { 0, "No incoming data packets require sequencing" }, { 1, "Only non-IP data packets require sequencing" }, { 2, "All incoming data packets require sequencing" }, { 0, NULL } }; static const value_string l2_sublayer_vals[] = { { 0, "No L2-Specific Sublayer" }, { 1, "Default L2-Specific Sublayer present" }, { 2, "ATM-Specific Sublayer present" }, { 3, "MPT-Specific Sublayer" }, { 4, "PSP-Specific Sublayer" }, { 0, NULL } }; /* Result Code values for the StopCCN message */ static const value_string result_code_stopccn_vals[] = { { 0, "Reserved", }, { 1, "General request to clear control connection", }, { 2, "General error, Error Code indicates the problem", }, { 3, "Control connection already exists", }, { 4, "Requester is not authorized to establish a control connection", }, { 5, "The protocol version of the requester is not supported", }, { 6, "Requester is being shut down", }, { 7, "Finite state machine error or timeout", }, { 8, "Control connection due to mismatching CCDS value", }, /* [RFC3308] */ { 0, NULL } }; /* Result Code values for the CDN message */ static const value_string result_code_cdn_vals[] = { { 0, "Reserved", }, { 1, "Session disconnected due to loss of carrier or circuit disconnect", }, { 2, "Session disconnected for the reason indicated in Error Code", }, { 3, "Session disconnected for administrative reasons", }, { 4, "Appropriate facilities unavailable (temporary condition)", }, { 5, "Appropriate facilities unavailable (permanent condition)", }, { 6, "Invalid destination", }, { 7, "Call failed due to no carrier detected", }, { 8, "Call failed due to detection of a busy signal", }, { 9, "Call failed due to lack of a dial tone", }, { 10, "Call was not established within time allotted by LAC", }, { 11, "Call was connected but no appropriate framing was detected", }, { 12, "Disconnecting call due to mismatching SDS value", }, { 13, "Session not established due to losing tie breaker", }, { 14, "Session not established due to unsupported PW type", }, { 15, "Session not established, sequencing required without valid L2-Specific Sublayer", }, { 16, "Finite state machine error or timeout", }, { 17, "FR PVC was deleted permanently (no longer provisioned) ", }, /* [RFC4591] */ { 18, "FR PVC has been INACTIVE for an extended period of time", }, /* [RFC4591] */ { 19, "Mismatched FR Header Length", }, /* [RFC4591] */ { 20, "HDLC Link was deleted permanently (no longer provisioned)", }, /* [RFC4349] */ { 21, "HDLC Link has been INACTIVE for an extended period of time", }, /* [RFC4349] */ { 22, "Session not established due to other LCCE can not support the OAM Cell Emulation", }, /* [RFC4454] */ { 23, "Mismatching interface MTU", }, /* [RFC4667] */ { 24, "Attempt to connect to non-existent forwarder", }, /* [RFC4667] */ { 25, "Attempt to connect to unauthorized forwarder", }, /* [RFC4667] */ { 26, "Loop Detected", }, /* [draft-ietf-l2tpext-tunnel-switching-06.txt] */ { 27, "Attachment Circuit bound to different PE", }, /* [RFC6074] */ { 28, "Attachment Circuit bound to different remote Attachment Circuit", }, /* [RFC6074] */ { 29, "Unassigned", }, { 30, "Return code to indicate connection was refused because of TDM PW parameters. The error code indicates the problem.", }, /* [RFC5611] */ { 31, "Sequencing not supported", }, /* [RFC6073] */ { 0, NULL } }; static value_string_ext result_code_cdn_vals_ext = VALUE_STRING_EXT_INIT(result_code_cdn_vals); static const value_string error_code_vals[] = { { 0, "No General Error", }, { 1, "No control connection exists yet for this pair of LCCEs", }, { 2, "Length is wrong", }, { 3, "One of the field values was out of range", }, { 4, "Insufficient resources to handle this operation now", }, { 5, "Invalid Session ID", }, { 6, "A generic vendor-specific error occurred", }, { 7, "Try another", }, { 8, "Receipt of an unknown AVP with the M bit set", }, { 9, "Try another directed", }, { 10, "Next hop unreachable", }, { 11, "Next hop busy", }, { 12, "TSA busy", }, { 0, NULL } }; #define CONTROL_MESSAGE 0 #define RESULT_ERROR_CODE 1 #define PROTOCOL_VERSION 2 #define FRAMING_CAPABILITIES 3 #define BEARER_CAPABILITIES 4 #define TIE_BREAKER 5 #define FIRMWARE_REVISION 6 #define HOST_NAME 7 #define VENDOR_NAME 8 #define ASSIGNED_TUNNEL_ID 9 #define RECEIVE_WINDOW_SIZE 10 #define CHALLENGE 11 #define CAUSE_CODE 12 #define CHALLENGE_RESPONSE 13 #define ASSIGNED_SESSION 14 #define CALL_SERIAL_NUMBER 15 #define MINIMUM_BPS 16 #define MAXIMUM_BPS 17 #define BEARER_TYPE 18 #define FRAMING_TYPE 19 #define CALLED_NUMBER 21 #define CALLING_NUMBER 22 #define SUB_ADDRESS 23 #define TX_CONNECT_SPEED 24 #define PHYSICAL_CHANNEL 25 #define INITIAL_RECEIVED_LCP_CONFREQ 26 #define LAST_SENT_LCP_CONFREQ 27 #define LAST_RECEIVED_LCP_CONFREQ 28 #define PROXY_AUTHEN_TYPE 29 #define PROXY_AUTHEN_NAME 30 #define PROXY_AUTHEN_CHALLENGE 31 #define PROXY_AUTHEN_ID 32 #define PROXY_AUTHEN_RESPONSE 33 #define CALL_STATUS_AVPS 34 #define ACCM 35 #define RANDOM_VECTOR 36 #define PRIVATE_GROUP_ID 37 #define RX_CONNECT_SPEED 38 #define SEQUENCING_REQUIRED 39 #define PPP_DISCONNECT_CAUSE_CODE 46 /* RFC 3145 */ #define EXTENDED_VENDOR_ID 58 #define MESSAGE_DIGEST 59 #define ROUTER_ID 60 #define ASSIGNED_CONTROL_CONN_ID 61 #define PW_CAPABILITY_LIST 62 #define LOCAL_SESSION_ID 63 #define REMOTE_SESSION_ID 64 #define ASSIGNED_COOKIE 65 #define REMOTE_END_ID 66 #define PW_TYPE 68 #define L2_SPECIFIC_SUBLAYER 69 #define DATA_SEQUENCING 70 #define CIRCUIT_STATUS 71 #define PREFERRED_LANGUAGE 72 #define CTL_MSG_AUTH_NONCE 73 #define TX_CONNECT_SPEED_V3 74 #define RX_CONNECT_SPEED_V3 75 #define CONNECT_SPEED_UPDATE 97 /* http://www.iana.org/assignments/l2tp-parameters/l2tp-parameters.xhtml */ #define NUM_AVP_TYPES 102 static const value_string avp_type_vals[] = { { CONTROL_MESSAGE, "Control Message" }, { RESULT_ERROR_CODE, "Result-Error Code" }, { PROTOCOL_VERSION, "Protocol Version" }, { FRAMING_CAPABILITIES, "Framing Capabilities" }, { BEARER_CAPABILITIES, "Bearer Capabilities" }, { TIE_BREAKER, "Tie Breaker" }, { FIRMWARE_REVISION, "Firmware Revision" }, { HOST_NAME, "Host Name" }, { VENDOR_NAME, "Vendor Name" }, { ASSIGNED_TUNNEL_ID, "Assigned Tunnel ID" }, { RECEIVE_WINDOW_SIZE, "Receive Window Size" }, { CHALLENGE, "Challenge" }, { CAUSE_CODE, "Cause Code" }, { CHALLENGE_RESPONSE, "Challenge Response" }, { ASSIGNED_SESSION, "Assigned Session" }, { CALL_SERIAL_NUMBER, "Call Serial Number" }, { MINIMUM_BPS, "Minimum BPS" }, { MAXIMUM_BPS, "Maximum BPS" }, { BEARER_TYPE, "Bearer Type" }, { FRAMING_TYPE, "Framing Type" }, { 20, "Reserved" }, { CALLED_NUMBER, "Called Number" }, { CALLING_NUMBER, "Calling Number" }, { SUB_ADDRESS, "Sub-Address" }, { TX_CONNECT_SPEED, "Connect Speed" }, { PHYSICAL_CHANNEL, "Physical Channel" }, { INITIAL_RECEIVED_LCP_CONFREQ, "Initial Received LCP CONFREQ" }, { LAST_SENT_LCP_CONFREQ, "Last Sent LCP CONFREQ" }, { LAST_RECEIVED_LCP_CONFREQ, "Last Received LCP CONFREQ" }, { PROXY_AUTHEN_TYPE, "Proxy Authen Type" }, { PROXY_AUTHEN_NAME, "Proxy Authen Name" }, { PROXY_AUTHEN_CHALLENGE, "Proxy Authen Challenge" }, { PROXY_AUTHEN_ID, "Proxy Authen ID" }, { PROXY_AUTHEN_RESPONSE, "Proxy Authen Response" }, { CALL_STATUS_AVPS, "Call status AVPs" }, { ACCM, "ACCM" }, { RANDOM_VECTOR, "Random Vector" }, { PRIVATE_GROUP_ID, "Private group ID" }, { RX_CONNECT_SPEED, "RxConnect Speed" }, { SEQUENCING_REQUIRED, "Sequencing Required" }, { PPP_DISCONNECT_CAUSE_CODE, "PPP Disconnect Cause Code" }, { EXTENDED_VENDOR_ID, "Extended Vendor ID" }, { MESSAGE_DIGEST, "Message Digest" }, { ROUTER_ID, "Router ID" }, { ASSIGNED_CONTROL_CONN_ID, "Assigned Control Connection ID" }, { PW_CAPABILITY_LIST, "Pseudowire Capability List" }, { LOCAL_SESSION_ID, "Local Session ID" }, { REMOTE_SESSION_ID, "Remote Session ID" }, { ASSIGNED_COOKIE, "Assigned Cookie" }, { REMOTE_END_ID, "Remote End ID" }, { PW_TYPE, "Pseudowire Type" }, { L2_SPECIFIC_SUBLAYER, "Layer2 Specific Sublayer" }, { DATA_SEQUENCING, "Data Sequencing" }, { CIRCUIT_STATUS, "Circuit Status" }, { PREFERRED_LANGUAGE, "Preferred Language" }, { CTL_MSG_AUTH_NONCE, "Control Message Authentication Nonce" }, { TX_CONNECT_SPEED_V3, "Tx Connect Speed Version 3" }, { RX_CONNECT_SPEED_V3, "Rx Connect Speed Version 3" }, { 76, "Failover Capability" }, /*[RFC4951] */ { 77, "Tunnel Recovery" }, /*[RFC4951] */ { 78, "Suggested Control Sequence" }, /*[RFC4951] */ { 79, "Failover Session State" }, /*[RFC4951] */ { 80, "Multicast Capability" }, /*[RFC4045] */ { 81, "New Outgoing Sessions" }, /*[RFC4045] */ { 82, "New Outgoing Sessions Acknowledgement" }, /*[RFC4045] */ { 83, "Withdraw Outgoing Sessions" }, /*[RFC4045] */ { 84, "Multicast Packets Priority" }, /*[RFC4045] */ { 85, "Frame-Relay Header Length" }, /*[RFC4591] */ { 86, "ATM Maximum Concatenated Cells" }, /*[RFC4454] */ { 87, "OAM Emulation Required" }, /*[RFC4454] */ { 88, "ATM Alarm Status" }, /*[RFC4454] */ /* Also, see ATM Alarm Status AVP Values below */ { 89, "Attachment Group Identifier" }, /*[RFC4667] */ { 90, "Local End Identifier" }, /*[RFC4667] */ { 91, "Interface Maximum Transmission Unit" }, /*[RFC4667] */ { 92, "FCS Retention" }, /*[RFC4720] */ { 93, "Tunnel Switching Aggregator ID" }, /*[draft-ietf-l2tpext-tunnel-switching-06.txt] */ { 94, "Maximum Receive Unit (MRU)" }, /*[RFC4623] */ { 95, "Maximum Reassembled Receive Unit (MRRU)" }, /*[RFC4623] */ { 96, "VCCV Capability" }, /*[RFC5085] */ { CONNECT_SPEED_UPDATE, "Connect Speed Update" }, /*[RFC5515] */ { 98, "Connect Speed Update Enable" }, /*[RFC5515] */ { 99, "TDM Pseudowire" }, /*[RFC5611] */ { 100, "RTP AVP" }, /*[RFC5611] */ { 101, "PW Switching Point" }, /*[RFC6073] */ { 0, NULL } }; static value_string_ext avp_type_vals_ext = VALUE_STRING_EXT_INIT(avp_type_vals); #define CISCO_ACK 0 #define CISCO_ASSIGNED_CONNECTION_ID 1 #define CISCO_PW_CAPABILITY_LIST 2 #define CISCO_LOCAL_SESSION_ID 3 #define CISCO_REMOTE_SESSION_ID 4 #define CISCO_ASSIGNED_COOKIE 5 #define CISCO_REMOTE_END_ID 6 #define CISCO_PW_TYPE 7 #define CISCO_CIRCUIT_STATUS 8 #define CISCO_SESSION_TIE_BREAKER 9 #define CISCO_DRAFT_AVP_VERSION 10 #define CISCO_MESSAGE_DIGEST 12 #define CISCO_AUTH_NONCE 13 #define CISCO_INTERFACE_MTU 14 static const value_string cisco_avp_type_vals[] = { { CISCO_ACK, "Cisco ACK" }, { CISCO_ASSIGNED_CONNECTION_ID, "Assigned Connection ID" }, { CISCO_PW_CAPABILITY_LIST, "Pseudowire Capabilities List" }, { CISCO_LOCAL_SESSION_ID, "Local Session ID" }, { CISCO_REMOTE_SESSION_ID, "Remote Session ID" }, { CISCO_ASSIGNED_COOKIE, "Assigned Cookie" }, { CISCO_REMOTE_END_ID, "Remote End ID" }, { CISCO_PW_TYPE, "Pseudowire Type" }, { CISCO_CIRCUIT_STATUS, "Circuit Status" }, { CISCO_SESSION_TIE_BREAKER, "Session Tie Breaker" }, { CISCO_DRAFT_AVP_VERSION, "Draft AVP Version" }, { CISCO_MESSAGE_DIGEST, "Message Digest" }, { CISCO_AUTH_NONCE, "Control Message Authentication Nonce" }, { CISCO_INTERFACE_MTU, "Interface MTU" }, { 0, NULL } }; #define ERICSSON_MSG_TYPE 0 #define ERICSSON_TRANSPORT_CONFIG 1 #define ERICSSON_PACKET_LOSS 2 #define ERICSSON_PROTO_VERSION 3 #define ERICSSON_CONN_TYPE 4 #define ERICSSON_CRC_ENABLED 5 #define ERICSSON_STN_NAME 6 #define ERICSSON_ABIS_LOWER_MODE 7 #define ERICSSON_TEI_TO_SC_MAP 8 #define ERICSSON_CHAN_STATUS_LIST 9 #define ERICSSON_EXT_PROTO_VERSION 10 #define ERICSSON_CHAN_STATUS_LIST2 11 static const value_string ericsson_avp_type_vals[] = { { ERICSSON_MSG_TYPE, "Message Type" }, { ERICSSON_TRANSPORT_CONFIG, "Transport Configuration" }, { ERICSSON_PACKET_LOSS, "Packet Loss" }, { ERICSSON_PROTO_VERSION, "Protocol Version" }, { ERICSSON_CONN_TYPE, "Connection Type" }, { ERICSSON_STN_NAME, "STN Name" }, { ERICSSON_CRC_ENABLED, "CRC32 Enabled" }, { ERICSSON_ABIS_LOWER_MODE, "Abis Lower Mode" }, { ERICSSON_TEI_TO_SC_MAP, "TEI to SC Map" }, { ERICSSON_CHAN_STATUS_LIST, "Channel Status List" }, { ERICSSON_EXT_PROTO_VERSION, "Extended Protoocl Version" }, { ERICSSON_CHAN_STATUS_LIST2, "Channel Status List 2" }, { 0, NULL } }; static const value_string ericsson_msg_type_vals[] = { { 0, "Transport Configuration Notification" }, { 1, "Performance Notification" }, { 2, "Transport Configuration Request" }, { 3, "Transport Configuration Response" }, { 4, "Abis Lower Transport Config Request" }, { 5, "Abis Lower Transport Config Response" }, { 6, "Local Connect Channel Status Notification" }, { 0, NULL } }; static const value_string ericsson_short_msg_type_vals[] = { { 0, "TCN" }, { 1, "PN" }, { 2, "TCRQ" }, { 3, "TCRP" }, { 4, "ALTCRQ" }, { 5, "ALTCRP" }, { 6, "LCCSN" }, { 0, NULL } }; static const value_string ericsson_conn_type_vals[] = { { 0, "Primary" }, { 1, "Secondary" }, { 0, NULL } }; static const value_string ericsson_abis_lower_mode_vals[] = { { 0, "Single Timeslot" }, { 1, "Super Channel" }, { 0, NULL } }; #define BROADBAND_AGENT_CIRCUIT_ID 1 #define BROADBAND_AGENT_REMOTE_ID 2 #define BROADBAND_ACTUAL_DR_UP 129 #define BROADBAND_ACTUAL_DR_DOWN 130 #define BROADBAND_MINIMUM_DR_UP 131 #define BROADBAND_MINIMUM_DR_DOWN 132 #define BROADBAND_ATTAINABLE_DR_UP 133 #define BROADBAND_ATTAINABLE_DR_DOWN 134 #define BROADBAND_MAXIMUM_DR_UP 135 #define BROADBAND_MAXIMUM_DR_DOWN 136 #define BROADBAND_MINIMUM_DR_UP_LOW_POWER 137 #define BROADBAND_MINIMUM_DR_DOWN_LOW_POWER 138 #define BROADBAND_MAXIMUM_INTERLEAVING_DELAY_UP 139 #define BROADBAND_ACTUAL_INTERLEAVING_DELAY_UP 140 #define BROADBAND_MAXIMUM_INTERLEAVING_DELAY_DOWN 141 #define BROADBAND_ACTUAL_INTERLEAVING_DELAY_DOWN 142 #define BROADBAND_ACCESS_LOOP_ENCAPSULATION 144 #define BROADBAND_ANCP_ACCESS_LINE_TYPE 145 #define BROADBAND_IWF_SESSION 254 static const value_string broadband_avp_type_vals[] = { { BROADBAND_AGENT_CIRCUIT_ID, "Agent-Circuit-Id" }, { BROADBAND_AGENT_REMOTE_ID, "Agent-Remote-Id" }, { BROADBAND_ACTUAL_DR_UP, "Actual-Data-Rate-Upstream" }, { BROADBAND_ACTUAL_DR_DOWN, "Actual-Data-Rate-Downstream" }, { BROADBAND_MINIMUM_DR_UP, "Minimum-Data-Rate-Upstream" }, { BROADBAND_MINIMUM_DR_DOWN, "Minimum-Data-Rate-Downstream" }, { BROADBAND_ATTAINABLE_DR_UP, "Attainable-Data-Rate-Upstream" }, { BROADBAND_ATTAINABLE_DR_DOWN, "Attainable-Data-Rate-Downstream" }, { BROADBAND_MAXIMUM_DR_UP, "Maximum-Data-Rate-Upstream" }, { BROADBAND_MAXIMUM_DR_DOWN, "Maximum-Data-Rate-Downstream" }, { BROADBAND_MINIMUM_DR_UP_LOW_POWER, "Minimum-Data-Rate-Upstream-Low-Power" }, { BROADBAND_MINIMUM_DR_DOWN_LOW_POWER, "Minimum-Data-Rate-Downstream-Low-Power" }, { BROADBAND_MAXIMUM_INTERLEAVING_DELAY_UP, "Maximum-Interleaving-Delay-Upstream" }, { BROADBAND_ACTUAL_INTERLEAVING_DELAY_UP, "Actual-Interleaving-Delay-Upstream" }, { BROADBAND_MAXIMUM_INTERLEAVING_DELAY_DOWN, "Maximum-Interleaving-Delay-Downstream" }, { BROADBAND_ACTUAL_INTERLEAVING_DELAY_DOWN, "Actual-Interleaving-Delay-Downstream" }, { BROADBAND_ACCESS_LOOP_ENCAPSULATION, "Access-Loop-Encapsulation" }, { BROADBAND_ANCP_ACCESS_LINE_TYPE, "ANCP Access Line Type" }, { BROADBAND_IWF_SESSION, "IWF-Session" }, { 0, NULL } }; static const value_string cablelabs_avp_type_vals[] = { /* 7.5.2 DEPI Specific AVPs */ { 0, "Reserved" }, { 1, "DEPI Result Code" }, { 2, "DEPI Resource Allocation Request" }, { 3, "DEPI Resource Allocation Reply" }, { 4, "DEPI Local MTU" }, { 5, "DOCSIS SYNC Control" }, { 6, "EQAM Capability Bits" }, { 7, "DEPI Remote MTU" }, { 8, "DEPI Local UDP Port" }, { 9, "DPR Session Type" }, { 10, "DPR Session Status" }, /* 7.5.3 QAM Channel PHY AVPs */ { 100, "Downstream QAM Channel TSID Group" }, { 101, "Downstream QAM Channel Frequency" }, { 102, "Downstream QAM Channel Power" }, { 103, "Downstream QAM Channel Modulation" }, { 104, "Downstream QAM Channel J.83 Annex" }, { 105, "Downstream QAM Channel Symbol Rate" }, { 106, "Downstream QAM Channel Interleave Depth" }, { 107, "Downstream QAM Channel RF Block Muting53" }, /* 7.5.4 DEPI Redundancy Capabilities AVPs */ { 200, "DEPI Redundancy Capabilities" }, { 0, NULL } }; static const value_string l2tp_cablel_modulation_vals[] = { { 0, "64-QAM" }, { 1, "128-QAM" }, { 0, NULL } }; static const value_string pw_types_vals[] = { { 0x0001, "Frame Relay DLCI" }, { 0x0002, "ATM AAL5 SDU VCC transport" }, { 0x0003, "ATM Cell transparent Port Mode" }, { 0x0004, "Ethernet VLAN" }, { 0x0005, "Ethernet" }, { 0x0006, "HDLC" }, { 0x0007, "PPP" }, { 0x0009, "ATM Cell transport VCC Mode" }, { 0x000A, "ATM Cell transport VPC Mode" }, { 0x000B, "IP Transport" }, { 0x000C, "MPEG-TS Payload Type (MPTPW)" }, { 0x000D, "Packet Streaming Protocol (PSPPW)" }, /* 0x000E-0x0010 Unassigned */ { 0x0011, "Structure-agnostic E1 circuit" }, /* [RFC5611] */ { 0x0012, "Structure-agnostic T1 (DS1) circuit" }, /* [RFC5611] */ { 0x0013, "Structure-agnostic E3 circuit" }, /* [RFC5611] */ { 0x0014, "Structure-agnostic T3 (DS3) circuit" }, /* [RFC5611] */ { 0x0015, "CESoPSN basic mode" }, /* [RFC5611] */ { 0x0016, "Unassigned" }, { 0x0017, "CESoPSN TDM with CAS" }, /* [RFC5611] */ { 0, NULL }, }; static const value_string ale_datalink_types_vals[] = { { 0x00, "ATM AAL5" }, { 0x01, "Ethernet" }, { 0, NULL }, }; static const value_string ale_enc1_types_vals[] = { { 0x00, "NA - Not Available" }, { 0x01, "Untagged Ethernet" }, { 0x02, "Single-Tagged Ethernet" }, { 0, NULL }, }; static const value_string ale_enc2_types_vals[] = { { 0x00, "NA - Not Available" }, { 0x01, "PPPoA LLC" }, { 0x02, "PPPoA Null" }, { 0x03, "IP over ATM (IPoA) LLC" }, { 0x04, "IPoA Null" }, { 0x05, "Ethernet over AAL5 LLC with Frame Check Sequence (FCS)" }, { 0x06, "Ethernet over AAL5 LLC without FCS" }, { 0x07, "Ethernet over AAL5 Null with FCS" }, { 0x08, "Ethernet over AAL5 Null without FCS" }, { 0, NULL }, }; static const value_string ancp_types_vals[] = { { 0x01, "ADSL1" }, { 0x02, "ADSL2" }, { 0x03, "ADSL2+" }, { 0x04, "VDSL1" }, { 0x05, "VDSL2" }, { 0x06, "SDSL" }, { 0x07, "UNKNOWN" }, { 0, NULL }, }; static const value_string iwf_types_vals[] = { { 0x00, "IWF not performed" }, { 0x01, "IWF performed" }, { 0, NULL }, }; static const val64_string unique_indeterminable_or_no_link[] = { { 0, "indeterminable or no physical p2p link" }, { 0, NULL }, }; static const true_false_string tfs_new_existing = { "New", "Existing" }; static dissector_handle_t ppp_hdlc_handle; static dissector_handle_t ppp_lcp_options_handle; static dissector_handle_t atm_oam_handle; static dissector_handle_t llc_handle; static dissector_handle_t l2tp_udp_handle; static dissector_handle_t l2tp_ip_handle; #define L2TP_HMAC_MD5 0 #define L2TP_HMAC_SHA1 1 typedef struct l2tpv3_conversation { address lcce1; guint16 lcce1_port; address lcce2; guint16 lcce2_port; port_type pt; struct l2tpv3_tunnel *tunnel; } l2tpv3_conversation_t; typedef struct l2tpv3_tunnel { l2tpv3_conversation_t *conv; address lcce1; guint32 lcce1_id; guint8 *lcce1_nonce; gint lcce1_nonce_len; address lcce2; guint32 lcce2_id; guint8 *lcce2_nonce; gint lcce2_nonce_len; gchar *shared_key_secret; guint8 shared_key[HASH_MD5_LENGTH]; GSList *sessions; } l2tpv3_tunnel_t; typedef struct lcce_settings { guint32 id; gint cookie_len; gint l2_specific; } lcce_settings_t; typedef struct l2tpv3_session { lcce_settings_t lcce1; lcce_settings_t lcce2; gint pw_type; } l2tpv3_session_t; static const gchar* shared_secret = ""; static GSList *list_heads = NULL; static void update_shared_key(l2tpv3_tunnel_t *tunnel) { const gchar *secret = ""; /* There is at least one nonce in the packet, so we can do authentication, otherwise it's just a plain digest without nonces. */ if (tunnel->lcce1_nonce != NULL || tunnel->lcce2_nonce != NULL) { secret = shared_secret; } /* If there's no shared key in the conversation context, or the secret has been changed */ if (tunnel->shared_key_secret == NULL || strcmp(secret, tunnel->shared_key_secret) != 0) { /* For secret specification, see RFC 3931 pg 37 */ guint8 data = 2; if (ws_hmac_buffer(GCRY_MD_MD5, tunnel->shared_key, &data, 1, secret, strlen(secret))) { return; } tunnel->shared_key_secret = wmem_strdup(wmem_file_scope(), secret); } } static void md5_hmac_digest(l2tpv3_tunnel_t *tunnel, tvbuff_t *tvb, int length, int idx, int avp_len, int msg_type, packet_info *pinfo, guint8 digest[20]) { guint8 zero[HASH_MD5_LENGTH] = { 0 }; gcry_md_hd_t hmac_handle; int remainder; int offset = 0; if (tunnel->conv->pt == PT_NONE) /* IP encapsulated L2TPv3 */ offset = 4; if (gcry_md_open(&hmac_handle, GCRY_MD_MD5, GCRY_MD_FLAG_HMAC)) { return; } if (gcry_md_setkey(hmac_handle, tunnel->shared_key, HASH_MD5_LENGTH)) { gcry_md_close(hmac_handle); return; } if (msg_type != MESSAGE_TYPE_SCCRQ) { if (tunnel->lcce1_nonce != NULL && tunnel->lcce2_nonce != NULL) { if (addresses_equal(&tunnel->lcce1, &pinfo->src)) { gcry_md_write(hmac_handle, tunnel->lcce1_nonce, tunnel->lcce1_nonce_len); gcry_md_write(hmac_handle, tunnel->lcce2_nonce, tunnel->lcce2_nonce_len); } else { gcry_md_write(hmac_handle, tunnel->lcce2_nonce, tunnel->lcce2_nonce_len); gcry_md_write(hmac_handle, tunnel->lcce1_nonce, tunnel->lcce1_nonce_len); } } } gcry_md_write(hmac_handle, tvb_get_ptr(tvb, offset, idx + 1 - offset), idx + 1 - offset); /* Message digest is calculated with an empty message digest field */ gcry_md_write(hmac_handle, zero, avp_len - 1); remainder = length - (idx + avp_len); gcry_md_write(hmac_handle, tvb_get_ptr(tvb, idx + avp_len, remainder), remainder); memcpy(digest, gcry_md_read(hmac_handle, 0), HASH_MD5_LENGTH); gcry_md_close(hmac_handle); } static void sha1_hmac_digest(l2tpv3_tunnel_t *tunnel, tvbuff_t *tvb, int length, int idx, int avp_len, int msg_type, packet_info *pinfo, guint8 digest[20]) { guint8 zero[HASH_SHA1_LENGTH] = { 0 }; gcry_md_hd_t hmac_handle; int remainder; int offset = 0; if (tunnel->conv->pt == PT_NONE) /* IP encapsulated L2TPv3 */ offset = 4; if (gcry_md_open(&hmac_handle, GCRY_MD_SHA1, GCRY_MD_FLAG_HMAC)) { return; } if (gcry_md_setkey(hmac_handle, tunnel->shared_key, HASH_MD5_LENGTH)) { gcry_md_close(hmac_handle); return; } if (msg_type != MESSAGE_TYPE_SCCRQ) { if (tunnel->lcce1_nonce != NULL && tunnel->lcce2_nonce != NULL) { if (addresses_equal(&tunnel->lcce1, &pinfo->src)) { gcry_md_write(hmac_handle, tunnel->lcce1_nonce, tunnel->lcce1_nonce_len); gcry_md_write(hmac_handle, tunnel->lcce2_nonce, tunnel->lcce2_nonce_len); } else { gcry_md_write(hmac_handle, tunnel->lcce2_nonce, tunnel->lcce2_nonce_len); gcry_md_write(hmac_handle, tunnel->lcce1_nonce, tunnel->lcce1_nonce_len); } } } gcry_md_write(hmac_handle, tvb_get_ptr(tvb, offset, idx + 1 - offset), idx + 1 - offset); /* Message digest is calculated with an empty message digest field */ gcry_md_write(hmac_handle, zero, avp_len - 1); remainder = length - (idx + avp_len); gcry_md_write(hmac_handle, tvb_get_ptr(tvb, idx + avp_len, remainder), remainder); memcpy(digest, gcry_md_read(hmac_handle, 0), HASH_SHA1_LENGTH); gcry_md_close(hmac_handle); } static int check_control_digest(l2tpv3_tunnel_t *tunnel, tvbuff_t *tvb, int length, int idx, int avp_len, int msg_type, packet_info *pinfo) { guint8 digest[HASH_SHA1_LENGTH]; if (!tunnel) return 1; update_shared_key(tunnel); switch (tvb_get_guint8(tvb, idx)) { case L2TP_HMAC_MD5: if ((avp_len - 1) != HASH_MD5_LENGTH) return -1; md5_hmac_digest(tunnel, tvb, length, idx, avp_len, msg_type, pinfo, digest); break; case L2TP_HMAC_SHA1: if ((avp_len - 1) != HASH_SHA1_LENGTH) return -1; sha1_hmac_digest(tunnel, tvb, length, idx, avp_len, msg_type, pinfo, digest); break; default: return 1; break; } return tvb_memeql(tvb, idx + 1, digest, avp_len - 1); } static void store_cma_nonce(l2tpv3_tunnel_t *tunnel, tvbuff_t *tvb, int offset, int length, int msg_type) { guint8 *nonce = NULL; if (!tunnel) return; switch (msg_type) { case MESSAGE_TYPE_SCCRQ: if (!tunnel->lcce1_nonce) { tunnel->lcce1_nonce = (guint8 *)wmem_alloc(wmem_file_scope(), length); tunnel->lcce1_nonce_len = length; nonce = tunnel->lcce1_nonce; } break; case MESSAGE_TYPE_SCCRP: if (!tunnel->lcce2_nonce) { tunnel->lcce2_nonce = (guint8 *)wmem_alloc(wmem_file_scope(), length); tunnel->lcce2_nonce_len = length; nonce = tunnel->lcce2_nonce; } break; default: break; } if (nonce) tvb_memcpy(tvb, (void *)nonce, offset, length); return; } static void store_ccid(l2tpv3_tunnel_t *tunnel, tvbuff_t *tvb, int offset, int msg_type) { if (!tunnel) return; switch (msg_type) { case MESSAGE_TYPE_SCCRQ: tunnel->lcce1_id = tvb_get_ntohl(tvb, offset); break; case MESSAGE_TYPE_SCCRP: tunnel->lcce2_id = tvb_get_ntohl(tvb, offset); break; default: break; } return; } static l2tpv3_session_t *find_session(l2tpv3_tunnel_t *tunnel, guint32 lcce1_id, guint32 lcce2_id) { l2tpv3_session_t *session = NULL; GSList *iterator; iterator = tunnel->sessions; while (iterator) { session = (l2tpv3_session_t *)iterator->data; if ((session->lcce1.id == lcce1_id) || (session->lcce2.id == lcce2_id)) { return session; } iterator = g_slist_next(iterator); } return NULL; } static void init_session(l2tpv3_session_t *session) { session->lcce1.cookie_len = session->lcce2.cookie_len = -1; session->lcce1.l2_specific = session->lcce2.l2_specific = -1; session->pw_type = -1; } static l2tpv3_session_t *alloc_session(void) { l2tpv3_session_t *session = wmem_new0(wmem_packet_scope(), l2tpv3_session_t); init_session(session); return session; } static l2tpv3_session_t *store_lsession_id(l2tpv3_session_t *_session, tvbuff_t *tvb, int offset, int msg_type) { l2tpv3_session_t *session = _session; switch (msg_type) { case MESSAGE_TYPE_ICRQ: case MESSAGE_TYPE_OCRQ: case MESSAGE_TYPE_ICRP: case MESSAGE_TYPE_OCRP: break; default: return session; } if (session == NULL) session = alloc_session(); switch (msg_type) { case MESSAGE_TYPE_ICRQ: case MESSAGE_TYPE_OCRQ: session->lcce1.id = tvb_get_ntohl(tvb, offset); break; case MESSAGE_TYPE_ICRP: case MESSAGE_TYPE_OCRP: session->lcce2.id = tvb_get_ntohl(tvb, offset); break; } return session; } static l2tpv3_session_t *store_rsession_id(l2tpv3_session_t *_session, tvbuff_t *tvb, int offset, int msg_type) { l2tpv3_session_t *session = _session; switch (msg_type) { case MESSAGE_TYPE_ICRP: case MESSAGE_TYPE_OCRP: break; default: return session; } if (session == NULL) session = alloc_session(); session->lcce1.id = tvb_get_ntohl(tvb, offset); return session; } static l2tpv3_session_t *store_cookie_len(l2tpv3_session_t *_session, int len, int msg_type) { l2tpv3_session_t *session = _session; switch (msg_type) { case MESSAGE_TYPE_ICRQ: case MESSAGE_TYPE_OCRQ: case MESSAGE_TYPE_ICRP: case MESSAGE_TYPE_OCRP: break; default: return session; } if (session == NULL) session = alloc_session(); switch (msg_type) { case MESSAGE_TYPE_ICRQ: case MESSAGE_TYPE_OCRQ: session->lcce1.cookie_len = len; break; case MESSAGE_TYPE_ICRP: case MESSAGE_TYPE_OCRP: session->lcce2.cookie_len = len; break; } return session; } static l2tpv3_session_t *store_pw_type(l2tpv3_session_t *_session, tvbuff_t *tvb, int offset, int msg_type) { l2tpv3_session_t *session = _session; gint result = -1; guint16 pw_type; switch (msg_type) { case MESSAGE_TYPE_ICRQ: case MESSAGE_TYPE_OCRQ: break; default: return session; } if (session == NULL) session = alloc_session(); pw_type = tvb_get_ntohs(tvb, offset); switch (pw_type) { case 0x0007: result = L2TPv3_PROTOCOL_PPP; break; case 0x0005: result = L2TPv3_PROTOCOL_ETH; break; case 0x0006: result = L2TPv3_PROTOCOL_CHDLC; break; case 0x0002: result = L2TPv3_PROTOCOL_AAL5; break; case 0x0001: result = L2TPv3_PROTOCOL_FR; break; default: break; } session->pw_type = result; return session; } static l2tpv3_session_t *store_l2_sublayer(l2tpv3_session_t *_session, tvbuff_t *tvb, int offset, int msg_type) { l2tpv3_session_t *session = _session; gint result = l2tpv3_l2_specific; guint16 l2_sublayer; switch (msg_type) { case MESSAGE_TYPE_ICRQ: case MESSAGE_TYPE_OCRQ: case MESSAGE_TYPE_ICCN: case MESSAGE_TYPE_OCCN: case MESSAGE_TYPE_ICRP: case MESSAGE_TYPE_OCRP: break; default: return session; } if (session == NULL) session = alloc_session(); l2_sublayer = tvb_get_ntohs(tvb, offset); switch (l2_sublayer) { case 0x0000: result = L2TPv3_L2_SPECIFIC_NONE; break; case 0x0001: result = L2TPv3_L2_SPECIFIC_DEFAULT; break; case 0x0002: result = L2TPv3_L2_SPECIFIC_ATM; break; case 0x0003: result = L2TPv3_L2_SPECIFIC_DOCSIS_DMPT; break; default: break; } switch (msg_type) { case MESSAGE_TYPE_ICRQ: case MESSAGE_TYPE_OCRQ: case MESSAGE_TYPE_ICCN: case MESSAGE_TYPE_OCCN: session->lcce1.l2_specific = result; /* FALL THROUGH */ case MESSAGE_TYPE_ICRP: case MESSAGE_TYPE_OCRP: session->lcce2.l2_specific = result; break; } return session; } static void update_session(l2tpv3_tunnel_t *tunnel, l2tpv3_session_t *session) { l2tpv3_session_t *existing = NULL; if (tunnel == NULL || session == NULL) return; if (session->lcce1.id == 0 && session->lcce2.id == 0) return; existing = find_session(tunnel, session->lcce1.id, session->lcce2.id); if (!existing) { existing = wmem_new0(wmem_file_scope(), l2tpv3_session_t); init_session(existing); } if (session->lcce1.id != 0) existing->lcce1.id = session->lcce1.id; if (session->lcce2.id != 0) existing->lcce2.id = session->lcce2.id; if (session->lcce1.cookie_len != -1) existing->lcce1.cookie_len = session->lcce1.cookie_len; if (session->lcce2.cookie_len != -1) existing->lcce2.cookie_len = session->lcce2.cookie_len; if (session->lcce1.l2_specific != -1) existing->lcce1.l2_specific = session->lcce1.l2_specific; if (session->lcce2.l2_specific != -1) existing->lcce2.l2_specific = session->lcce2.l2_specific; if (session->pw_type != -1) existing->pw_type = session->pw_type; if (tunnel->sessions == NULL) { tunnel->sessions = g_slist_append(tunnel->sessions, existing); list_heads = g_slist_append(list_heads, tunnel->sessions); } else { tunnel->sessions = g_slist_append(tunnel->sessions, existing); } } static void l2tp_prompt(packet_info *pinfo _U_, gchar* result) { g_snprintf(result, MAX_DECODE_AS_PROMPT_LEN, "Decode L2TPv3 packet type 0x%04x as", GPOINTER_TO_UINT(p_get_proto_data(pinfo->pool, pinfo, proto_l2tp, 0))); } static gpointer l2tp_value(packet_info *pinfo _U_) { return p_get_proto_data(pinfo->pool, pinfo, proto_l2tp, 0); } /* * Dissect CISCO AVP:s */ static int dissect_l2tp_cisco_avps(tvbuff_t *tvb, packet_info *pinfo _U_, proto_tree *tree, guint32 ccid) { int offset = 0; int avp_type; guint32 avp_vendor_id; guint16 avp_len; guint16 ver_len_hidden; proto_tree *l2tp_avp_tree, *l2tp_avp_tree_sub; ver_len_hidden = tvb_get_ntohs(tvb, offset); avp_len = AVP_LENGTH(ver_len_hidden); avp_vendor_id = tvb_get_ntohs(tvb, offset + 2); avp_type = tvb_get_ntohs(tvb, offset + 4); l2tp_avp_tree = proto_tree_add_subtree_format(tree, tvb, offset, avp_len, ett_l2tp_avp, NULL, "Vendor %s (%u): %s AVP", enterprises_lookup(avp_vendor_id, "Unknown"), avp_vendor_id, val_to_str(avp_type, cisco_avp_type_vals, "Unknown (%u)")); proto_tree_add_item(l2tp_avp_tree, hf_l2tp_avp_mandatory, tvb, offset, 2, ENC_BIG_ENDIAN); proto_tree_add_item(l2tp_avp_tree, hf_l2tp_avp_hidden, tvb, offset, 2, ENC_BIG_ENDIAN); proto_tree_add_item(l2tp_avp_tree, hf_l2tp_avp_length, tvb, offset, 2, ENC_BIG_ENDIAN); if (HIDDEN_BIT(ver_len_hidden)) { /* don't try do display hidden */ offset += avp_len; return offset; } offset += 2; avp_len -= 2; proto_tree_add_item(l2tp_avp_tree, hf_l2tp_avp_vendor_id, tvb, offset, 2, ENC_BIG_ENDIAN); offset += 2; avp_len -= 2; proto_tree_add_uint(l2tp_avp_tree, hf_l2tp_cisco_avp_type, tvb, offset, 2, avp_type); offset += 2; avp_len -= 2; switch (avp_type) { case CISCO_ACK: /* process_l2tpv3_control does not set COL_INFO for vendor messages */ col_add_fstr(pinfo->cinfo, COL_INFO, "%s - Cisco ACK (tunnel id=%u)", control_msg, ccid); break; case CISCO_ASSIGNED_CONNECTION_ID: proto_tree_add_item(l2tp_avp_tree, hf_l2tp_cisco_assigned_control_connection_id, tvb, offset, 4, ENC_BIG_ENDIAN); break; case CISCO_PW_CAPABILITY_LIST: l2tp_avp_tree_sub = proto_tree_add_subtree(l2tp_avp_tree, tvb, offset, avp_len, ett_l2tp_avp_sub, NULL, "Pseudowire Capabilities List"); while (avp_len >= 2) { proto_tree_add_item(l2tp_avp_tree_sub, hf_l2tp_cisco_pw_type, tvb, offset, 2, ENC_BIG_ENDIAN); offset += 2; avp_len -= 2; } break; case CISCO_LOCAL_SESSION_ID: proto_tree_add_item(l2tp_avp_tree, hf_l2tp_cisco_local_session_id, tvb, offset, 4, ENC_BIG_ENDIAN); break; case CISCO_REMOTE_SESSION_ID: proto_tree_add_item(l2tp_avp_tree, hf_l2tp_cisco_remote_session_id, tvb, offset, 4, ENC_BIG_ENDIAN); break; case CISCO_ASSIGNED_COOKIE: proto_tree_add_item(l2tp_avp_tree, hf_l2tp_cisco_assigned_cookie, tvb, offset, avp_len, ENC_NA); break; case CISCO_REMOTE_END_ID: proto_tree_add_item(l2tp_avp_tree, hf_l2tp_cisco_remote_end_id, tvb, offset, avp_len, ENC_NA|ENC_ASCII); break; case CISCO_PW_TYPE: proto_tree_add_item(l2tp_avp_tree, hf_l2tp_cisco_pseudowire_type, tvb, offset, 2, ENC_BIG_ENDIAN); break; case CISCO_CIRCUIT_STATUS: proto_tree_add_item(l2tp_avp_tree, hf_l2tp_cisco_circuit_status, tvb, offset, 2, ENC_BIG_ENDIAN); proto_tree_add_item(l2tp_avp_tree, hf_l2tp_cisco_circuit_type, tvb, offset, 2, ENC_BIG_ENDIAN); break; case CISCO_SESSION_TIE_BREAKER: proto_tree_add_item(l2tp_avp_tree, hf_l2tp_cisco_tie_breaker, tvb, offset, 8, ENC_BIG_ENDIAN); break; case CISCO_DRAFT_AVP_VERSION: proto_tree_add_item(l2tp_avp_tree, hf_l2tp_cisco_draft_avp_version, tvb, offset, 2, ENC_BIG_ENDIAN); break; case CISCO_MESSAGE_DIGEST: proto_tree_add_item(l2tp_avp_tree, hf_l2tp_cisco_message_digest, tvb, offset, avp_len, ENC_NA); break; case CISCO_AUTH_NONCE: proto_tree_add_item(l2tp_avp_tree, hf_l2tp_cisco_nonce, tvb, offset, avp_len, ENC_NA); break; case CISCO_INTERFACE_MTU: proto_tree_add_item(l2tp_avp_tree, hf_l2tp_cisco_interface_mtu, tvb, offset, avp_len, ENC_BIG_ENDIAN); break; default: proto_tree_add_expert(l2tp_avp_tree, pinfo, &ei_l2tp_vendor_specific_avp_data, tvb, offset, avp_len); break; } offset += avp_len; return offset; } /* * Dissect Broadband Forums AVP:s */ static int dissect_l2tp_broadband_avps(tvbuff_t *tvb, packet_info *pinfo _U_, proto_tree *tree) { int offset = 0; int avp_type; guint32 avp_vendor_id; guint16 avp_len; guint16 ver_len_hidden; proto_tree *l2tp_avp_tree, *l2tp_avp_ale_tree; proto_item *ta; ver_len_hidden = tvb_get_ntohs(tvb, offset); avp_len = AVP_LENGTH(ver_len_hidden); avp_vendor_id = tvb_get_ntohs(tvb, offset + 2); avp_type = tvb_get_ntohs(tvb, offset + 4); l2tp_avp_tree = proto_tree_add_subtree_format(tree, tvb, offset, avp_len, ett_l2tp_avp, NULL, "Vendor %s (%u): %s AVP", enterprises_lookup(avp_vendor_id, "Unknown"), avp_vendor_id, val_to_str(avp_type, broadband_avp_type_vals, "Unknown (%u)")); proto_tree_add_item(l2tp_avp_tree, hf_l2tp_avp_mandatory, tvb, offset, 2, ENC_BIG_ENDIAN); proto_tree_add_item(l2tp_avp_tree, hf_l2tp_avp_hidden, tvb, offset, 2, ENC_BIG_ENDIAN); proto_tree_add_item(l2tp_avp_tree, hf_l2tp_avp_length, tvb, offset, 2, ENC_BIG_ENDIAN); if (HIDDEN_BIT(ver_len_hidden)) { /* don't try do display hidden */ offset += avp_len; return offset; } offset += 2; avp_len -= 2; proto_tree_add_item(l2tp_avp_tree, hf_l2tp_avp_vendor_id, tvb, offset, 2, ENC_BIG_ENDIAN); offset += 2; avp_len -= 2; proto_tree_add_uint(l2tp_avp_tree, hf_l2tp_broadband_avp_type, tvb, offset, 2, avp_type); offset += 2; avp_len -= 2; switch (avp_type) { case BROADBAND_AGENT_CIRCUIT_ID: proto_tree_add_item(l2tp_avp_tree, hf_l2tp_broadband_agent_circuit_id, tvb, offset, avp_len, ENC_UTF_8|ENC_NA); break; case BROADBAND_AGENT_REMOTE_ID: proto_tree_add_item(l2tp_avp_tree, hf_l2tp_broadband_agent_remote_id, tvb, offset, avp_len, ENC_UTF_8|ENC_NA); break; case BROADBAND_ACTUAL_DR_UP: proto_tree_add_item(l2tp_avp_tree, hf_l2tp_broadband_actual_dr_up, tvb, offset, 8, ENC_BIG_ENDIAN); break; case BROADBAND_ACTUAL_DR_DOWN: proto_tree_add_item(l2tp_avp_tree, hf_l2tp_broadband_actual_dr_down, tvb, offset, 8, ENC_BIG_ENDIAN); break; case BROADBAND_MINIMUM_DR_UP: proto_tree_add_item(l2tp_avp_tree, hf_l2tp_broadband_minimum_dr_up, tvb, offset, 8, ENC_BIG_ENDIAN); break; case BROADBAND_MINIMUM_DR_DOWN: proto_tree_add_item(l2tp_avp_tree, hf_l2tp_broadband_minimum_dr_down, tvb, offset, 8, ENC_BIG_ENDIAN); break; case BROADBAND_ATTAINABLE_DR_UP: proto_tree_add_item(l2tp_avp_tree, hf_l2tp_broadband_attainable_dr_up, tvb, offset, 8, ENC_BIG_ENDIAN); break; case BROADBAND_ATTAINABLE_DR_DOWN: proto_tree_add_item(l2tp_avp_tree, hf_l2tp_broadband_attainable_dr_down, tvb, offset, 8, ENC_BIG_ENDIAN); break; case BROADBAND_MAXIMUM_DR_UP: proto_tree_add_item(l2tp_avp_tree, hf_l2tp_broadband_maximum_dr_up, tvb, offset, 8, ENC_BIG_ENDIAN); break; case BROADBAND_MAXIMUM_DR_DOWN: proto_tree_add_item(l2tp_avp_tree, hf_l2tp_broadband_maximum_dr_down, tvb, offset, 8, ENC_BIG_ENDIAN); break; case BROADBAND_MINIMUM_DR_UP_LOW_POWER: proto_tree_add_item(l2tp_avp_tree, hf_l2tp_broadband_minimum_dr_up_low_power, tvb, offset, 8, ENC_BIG_ENDIAN); break; case BROADBAND_MINIMUM_DR_DOWN_LOW_POWER: proto_tree_add_item(l2tp_avp_tree, hf_l2tp_broadband_minimum_dr_down_low_power, tvb, offset, 8, ENC_BIG_ENDIAN); break; case BROADBAND_MAXIMUM_INTERLEAVING_DELAY_UP: proto_tree_add_item(l2tp_avp_tree, hf_l2tp_broadband_maximum_interleaving_delay_up, tvb, offset, 4, ENC_BIG_ENDIAN); break; case BROADBAND_ACTUAL_INTERLEAVING_DELAY_UP: proto_tree_add_item(l2tp_avp_tree, hf_l2tp_broadband_actual_interleaving_delay_up, tvb, offset, 4, ENC_BIG_ENDIAN); break; case BROADBAND_MAXIMUM_INTERLEAVING_DELAY_DOWN: proto_tree_add_item(l2tp_avp_tree, hf_l2tp_broadband_maximum_interleaving_delay_down, tvb, offset, 4, ENC_BIG_ENDIAN); break; case BROADBAND_ACTUAL_INTERLEAVING_DELAY_DOWN: proto_tree_add_item(l2tp_avp_tree, hf_l2tp_broadband_actual_interleaving_delay_down, tvb, offset, 4, ENC_BIG_ENDIAN); break; case BROADBAND_ACCESS_LOOP_ENCAPSULATION: { ta = proto_tree_add_item(l2tp_avp_tree, hf_l2tp_broadband_access_loop_encapsulation, tvb, offset, avp_len, ENC_NA); l2tp_avp_ale_tree = proto_item_add_subtree(ta, ett_l2tp_ale_sub); proto_tree_add_item(l2tp_avp_ale_tree, hf_l2tp_broadband_access_loop_encapsulation_data_link, tvb, offset, 1, ENC_BIG_ENDIAN); proto_tree_add_item(l2tp_avp_ale_tree, hf_l2tp_broadband_access_loop_encapsulation_enc1, tvb, offset+1, 1, ENC_BIG_ENDIAN); proto_tree_add_item(l2tp_avp_ale_tree, hf_l2tp_broadband_access_loop_encapsulation_enc2, tvb, offset+2, 1, ENC_BIG_ENDIAN); } break; case BROADBAND_ANCP_ACCESS_LINE_TYPE: proto_tree_add_item(l2tp_avp_tree, hf_l2tp_broadband_ancp_access_line_type, tvb, offset, avp_len, ENC_BIG_ENDIAN); break; case BROADBAND_IWF_SESSION: proto_tree_add_item(l2tp_avp_tree, hf_l2tp_broadband_iwf_session, tvb, offset, avp_len, ENC_BIG_ENDIAN); break; default: proto_tree_add_expert(l2tp_avp_tree, pinfo, &ei_l2tp_vendor_specific_avp_data, tvb, offset, avp_len); break; } offset += avp_len; return offset; } /* * Dissect Ericsson AVP:s */ /* Dissect a single variable-length Ericsson Transport Configuration Group */ static int dissect_l2tp_ericsson_transp_cfg(tvbuff_t *tvb, proto_tree *parent_tree) { int offset = 0; guint32 i, num_sapis; proto_tree *tree; while (tvb_reported_length_remaining(tvb, offset) >= 8) { tree = proto_tree_add_subtree_format(parent_tree, tvb, 0, -1, ett_l2tp_ericsson_tcg, NULL, "Transport Config Bundling Group"); proto_tree_add_item(tree, hf_l2tp_ericsson_tcg_group_id, tvb, offset++, 1, ENC_NA); proto_tree_add_item_ret_uint(tree, hf_l2tp_ericsson_tcg_num_sapis, tvb, offset++, 1, ENC_NA, &num_sapis); for (i = 0; i < num_sapis; i++) { proto_tree_add_item(tree, hf_l2tp_ericsson_tcg_sapi, tvb, offset++, 1, ENC_NA); } proto_tree_add_item(tree, hf_l2tp_ericsson_tcg_ip, tvb, offset, 4, ENC_NA); offset += 4; proto_tree_add_item(tree, hf_l2tp_ericsson_tcg_dscp, tvb, offset++, 1, ENC_NA); proto_tree_add_item(tree, hf_l2tp_ericsson_tcg_crc32_enable, tvb, offset++, 1, ENC_NA); proto_tree_add_item(tree, hf_l2tp_ericsson_tcg_bundling_tout, tvb, offset++, 1, ENC_NA); proto_tree_add_item(tree, hf_l2tp_ericsson_tcg_bundling_max_pkt, tvb, offset, 2, ENC_BIG_ENDIAN); offset += 2; } return offset; } /* Dissect a single 3-byte Ericsson TEI-to-SC Map */ static int dissect_l2tp_ericsson_tei_sc_map(tvbuff_t *tvb, proto_tree *parent_tree) { int i = 0, offset = 0; proto_tree *tree; while (tvb_reported_length_remaining(tvb, offset) >= 3) { tree = proto_tree_add_subtree_format(parent_tree, tvb, offset, 3, ett_l2tp_ericsson_map, NULL, "Transport Config Bundling Group %u", i); proto_tree_add_item(tree, hf_l2tp_ericsson_map_tei_low, tvb, offset++, 1, ENC_NA); proto_tree_add_item(tree, hf_l2tp_ericsson_map_tei_high, tvb, offset++, 1, ENC_NA); proto_tree_add_item(tree, hf_l2tp_ericsson_map_sc, tvb, offset++, 1, ENC_NA); i++; } return offset; } static int dissect_l2tp_ericsson_avps(tvbuff_t *tvb, packet_info *pinfo _U_, proto_tree *tree, guint32 ccid) { int offset = 0; int avp_type; guint32 avp_vendor_id; guint16 avp_len; guint16 ver_len_hidden; guint32 msg_type; proto_tree *l2tp_avp_tree; tvbuff_t *tcg_tvb; ver_len_hidden = tvb_get_ntohs(tvb, offset); avp_len = AVP_LENGTH(ver_len_hidden); avp_vendor_id = tvb_get_ntohs(tvb, offset + 2); avp_type = tvb_get_ntohs(tvb, offset + 4); l2tp_avp_tree = proto_tree_add_subtree_format(tree, tvb, offset, avp_len, ett_l2tp_avp, NULL, "Vendor %s (%u): %s AVP", enterprises_lookup(avp_vendor_id, "Unknown"), avp_vendor_id, val_to_str(avp_type, ericsson_avp_type_vals, "Unknown (%u)")); proto_tree_add_item(l2tp_avp_tree, hf_l2tp_avp_mandatory, tvb, offset, 2, ENC_BIG_ENDIAN); proto_tree_add_item(l2tp_avp_tree, hf_l2tp_avp_hidden, tvb, offset, 2, ENC_BIG_ENDIAN); proto_tree_add_item(l2tp_avp_tree, hf_l2tp_avp_length, tvb, offset, 2, ENC_BIG_ENDIAN); if (HIDDEN_BIT(ver_len_hidden)) { /* don't try do display hidden */ offset += avp_len; return offset; } offset += 2; avp_len -= 2; proto_tree_add_item(l2tp_avp_tree, hf_l2tp_avp_vendor_id, tvb, offset, 2, ENC_BIG_ENDIAN); offset += 2; avp_len -= 2; proto_tree_add_uint(l2tp_avp_tree, hf_l2tp_ericsson_avp_type, tvb, offset, 2, avp_type); offset += 2; avp_len -= 2; ccid++; switch (avp_type) { case ERICSSON_MSG_TYPE: proto_tree_add_item_ret_uint(l2tp_avp_tree, hf_l2tp_ericsson_msg_type, tvb, offset, 2, ENC_BIG_ENDIAN, &msg_type); col_add_fstr(pinfo->cinfo, COL_INFO, "%s - %s", control_msg, val_to_str(msg_type, ericsson_short_msg_type_vals, "Unknown (0x%x)")); break; case ERICSSON_PROTO_VERSION: proto_tree_add_item(l2tp_avp_tree, hf_l2tp_ericsson_ver_pref, tvb, offset, 4, ENC_BIG_ENDIAN); proto_tree_add_item(l2tp_avp_tree, hf_l2tp_ericsson_ver_2, tvb, offset+4, 4, ENC_BIG_ENDIAN); proto_tree_add_item(l2tp_avp_tree, hf_l2tp_ericsson_ver_3, tvb, offset+8, 4, ENC_BIG_ENDIAN); break; case ERICSSON_CONN_TYPE: proto_tree_add_item(l2tp_avp_tree, hf_l2tp_ericsson_conn_type, tvb, offset, 1, ENC_NA); break; case ERICSSON_STN_NAME: proto_tree_add_item(l2tp_avp_tree, hf_l2tp_ericsson_stn_name, tvb, offset, avp_len, ENC_ASCII|ENC_NA); break; case ERICSSON_CRC_ENABLED: proto_tree_add_item(l2tp_avp_tree, hf_l2tp_ericsson_crc32_enable, tvb, offset, avp_len, ENC_NA); break; case ERICSSON_ABIS_LOWER_MODE: proto_tree_add_item(l2tp_avp_tree, hf_l2tp_ericsson_abis_lower_mode, tvb, offset, 1, ENC_NA); break; case ERICSSON_TRANSPORT_CONFIG: proto_tree_add_item(l2tp_avp_tree, hf_l2tp_ericsson_tc_overl_thresh, tvb, offset, 2, ENC_BIG_ENDIAN); proto_tree_add_item(l2tp_avp_tree, hf_l2tp_ericsson_tc_num_groups, tvb, offset+2, 1, ENC_NA); /* FIXME: iterate over multiple groups */ tcg_tvb = tvb_new_subset_length(tvb, offset+3, avp_len-3); dissect_l2tp_ericsson_transp_cfg(tcg_tvb, l2tp_avp_tree); break; case ERICSSON_TEI_TO_SC_MAP: proto_tree_add_item(l2tp_avp_tree, hf_l2tp_ericsson_tc_num_maps, tvb, offset++, 1, ENC_NA); tcg_tvb = tvb_new_subset_length(tvb, offset, avp_len); offset += dissect_l2tp_ericsson_tei_sc_map(tcg_tvb, l2tp_avp_tree); break; default: proto_tree_add_expert(l2tp_avp_tree, pinfo, &ei_l2tp_vendor_specific_avp_data, tvb, offset, avp_len); break; } offset += avp_len; return offset; } /* * Ref: http://www.cablelabs.com/specifications/CM-SP-DEPI-I08-100611.pdf */ static int dissect_l2tp_vnd_cablelabs_avps(tvbuff_t *tvb, packet_info *pinfo _U_, proto_tree *tree, void *data _U_) { int offset = 0; int avp_type; guint32 avp_vendor_id; guint32 avp_len; guint16 ver_len_hidden; proto_tree *l2tp_avp_tree; ver_len_hidden = tvb_get_ntohs(tvb, offset); avp_len = AVP_LENGTH(ver_len_hidden); avp_vendor_id = tvb_get_ntohs(tvb, offset + 2); avp_type = tvb_get_ntohs(tvb, offset + 4); l2tp_avp_tree = proto_tree_add_subtree_format(tree, tvb, offset, avp_len, ett_l2tp_avp, NULL, "Vendor %s (%u): %s AVP", enterprises_lookup(avp_vendor_id, "Unknown"), avp_vendor_id, val_to_str(avp_type, cablelabs_avp_type_vals, "Unknown (%u)")); proto_tree_add_item(l2tp_avp_tree, hf_l2tp_avp_mandatory, tvb, offset, 2, ENC_BIG_ENDIAN); proto_tree_add_item(l2tp_avp_tree, hf_l2tp_avp_hidden, tvb, offset, 2, ENC_BIG_ENDIAN); proto_tree_add_item(l2tp_avp_tree, hf_l2tp_avp_length, tvb, offset, 2, ENC_BIG_ENDIAN); if (HIDDEN_BIT(ver_len_hidden)) { /* don't try do display hidden */ offset += avp_len; return offset; } offset += 2; avp_len -= 2; proto_tree_add_item(l2tp_avp_tree, hf_l2tp_avp_vendor_id, tvb, offset, 2, ENC_BIG_ENDIAN); offset += 2; avp_len -= 2; proto_tree_add_uint(l2tp_avp_tree, hf_l2tp_cablelabs_avp_type, tvb, offset, 2, avp_type); offset += 2; avp_len -= 2; switch (avp_type) { case 101: proto_tree_add_item(l2tp_avp_tree, hf_l2tp_cablel_avp_l_bit, tvb, offset, 2, ENC_BIG_ENDIAN); proto_tree_add_item(l2tp_avp_tree, hf_l2tp_cablel_avp_tsid_group_id, tvb, offset, 2, ENC_BIG_ENDIAN); offset+=2; avp_len-=2; proto_tree_add_item(l2tp_avp_tree, hf_l2tp_cablel_avp_frequency, tvb, offset, 4, ENC_BIG_ENDIAN); avp_len -= 4; offset+=4; break; case 103: proto_tree_add_item(l2tp_avp_tree, hf_l2tp_cablel_avp_l_bit, tvb, offset, 2, ENC_BIG_ENDIAN); proto_tree_add_item(l2tp_avp_tree, hf_l2tp_cablel_avp_tsid_group_id, tvb, offset, 2, ENC_BIG_ENDIAN); proto_tree_add_item(l2tp_avp_tree, hf_l2tp_cablel_avp_modulation, tvb, offset, 2, ENC_BIG_ENDIAN); offset+=2; avp_len-=2; break; case 105: proto_tree_add_item(l2tp_avp_tree, hf_l2tp_cablel_avp_l_bit, tvb, offset, 2, ENC_BIG_ENDIAN); proto_tree_add_item(l2tp_avp_tree, hf_l2tp_cablel_avp_tsid_group_id, tvb, offset, 2, ENC_BIG_ENDIAN); offset+=2; avp_len-=2; while(avp_len > 0){ proto_tree_add_item(l2tp_avp_tree, hf_l2tp_cablel_avp_m, tvb, offset, 2, ENC_BIG_ENDIAN); offset+=2; avp_len-=2; proto_tree_add_item(l2tp_avp_tree, hf_l2tp_cablel_avp_n, tvb, offset, 2, ENC_BIG_ENDIAN); offset+=2; avp_len-=2; } break; default: proto_tree_add_expert(l2tp_avp_tree, pinfo, &ei_l2tp_vendor_specific_avp_data, tvb, offset, avp_len); break; } offset += avp_len; return offset; } /* * Processes AVPs for Control Messages all versions and transports */ static void process_control_avps(tvbuff_t *tvb, packet_info *pinfo, proto_tree *l2tp_tree, int idx, int length, guint32 ccid, l2tpv3_tunnel_t *tunnel) { proto_tree *l2tp_lcp_avp_tree, *l2tp_avp_tree = NULL, *l2tp_avp_tree_sub, *l2tp_avp_csu_tree; proto_item *te, *tc; int msg_type = 0; gboolean isStopCcn = FALSE; int avp_type; guint32 avp_vendor_id; guint16 avp_len; guint16 ver_len_hidden; tvbuff_t *next_tvb, *avp_tvb; int digest_idx = 0; guint16 digest_avp_len = 0; proto_item *digest_item = NULL; l2tp_cntrl_data_t *l2tp_cntrl_data = wmem_new0(wmem_packet_scope(), l2tp_cntrl_data_t); l2tpv3_session_t *session = NULL; l2tp_cntrl_data->ccid = ccid; while (idx < length) { /* Process AVP's */ ver_len_hidden = tvb_get_ntohs(tvb, idx); avp_len = AVP_LENGTH(ver_len_hidden); avp_vendor_id = tvb_get_ntohs(tvb, idx + 2); avp_type = tvb_get_ntohs(tvb, idx + 4); if (avp_len < 6) { proto_tree_add_expert_format(l2tp_avp_tree ? l2tp_avp_tree : l2tp_tree, pinfo, &ei_l2tp_avp_length, tvb, idx, 2, "AVP length must be >= 6, got %u", avp_len); return; } if (avp_vendor_id != VENDOR_IETF) { avp_tvb = tvb_new_subset_length(tvb, idx, avp_len); if (avp_vendor_id == VENDOR_CISCO) { /* Vendor-Specific AVP */ dissect_l2tp_cisco_avps(avp_tvb, pinfo, l2tp_tree, ccid); idx += avp_len; continue; } else if (avp_vendor_id == VENDOR_BROADBAND_FORUM) { /* Vendor-Specific AVP */ dissect_l2tp_broadband_avps(avp_tvb, pinfo, l2tp_tree); idx += avp_len; continue; } else if (avp_vendor_id == VENDOR_ERICSSON) { /* Vendor-Specific AVP */ dissect_l2tp_ericsson_avps(avp_tvb, pinfo, l2tp_tree, ccid); idx += avp_len; continue; } else { /* Vendor-Specific AVP */ if (!dissector_try_uint_new(l2tp_vendor_avp_dissector_table, avp_vendor_id, avp_tvb, pinfo, l2tp_tree, FALSE, l2tp_cntrl_data)){ l2tp_avp_tree = proto_tree_add_subtree_format(l2tp_tree, tvb, idx, avp_len, ett_l2tp_avp, NULL, "Vendor %s (%u) AVP Type %u", enterprises_lookup(avp_vendor_id, "Unknown"), avp_vendor_id, avp_type); proto_tree_add_item(l2tp_avp_tree, hf_l2tp_avp_mandatory, tvb, idx, 2, ENC_BIG_ENDIAN); proto_tree_add_item(l2tp_avp_tree, hf_l2tp_avp_hidden, tvb, idx, 2, ENC_BIG_ENDIAN); proto_tree_add_item(l2tp_avp_tree, hf_l2tp_avp_length, tvb, idx, 2, ENC_BIG_ENDIAN); if (HIDDEN_BIT(ver_len_hidden)) { /* don't try do display hidden */ idx += avp_len; continue; } idx += 2; proto_tree_add_item(l2tp_avp_tree, hf_l2tp_avp_vendor_id, tvb, idx, 2, ENC_BIG_ENDIAN); idx += 2; proto_tree_add_uint(l2tp_avp_tree, hf_l2tp_avp_type, tvb, idx, 2, avp_type); idx += 2; proto_tree_add_expert(l2tp_avp_tree, pinfo, &ei_l2tp_vendor_specific_avp_data, tvb, idx, avp_len-6); avp_len-=6; } idx += avp_len; continue; } } /* IETF AVP:s */ l2tp_avp_tree = proto_tree_add_subtree_format(l2tp_tree, tvb, idx, avp_len, ett_l2tp_avp, NULL, "%s AVP", val_to_str_ext(avp_type, &avp_type_vals_ext, "Unknown (%u)")); proto_tree_add_item(l2tp_avp_tree, hf_l2tp_avp_mandatory, tvb, idx, 2, ENC_BIG_ENDIAN); proto_tree_add_item(l2tp_avp_tree, hf_l2tp_avp_hidden, tvb, idx, 2, ENC_BIG_ENDIAN); proto_tree_add_item(l2tp_avp_tree, hf_l2tp_avp_length, tvb, idx, 2, ENC_BIG_ENDIAN); if (HIDDEN_BIT(ver_len_hidden)) { /* don't try do display hidden */ idx += avp_len; continue; } idx += 2; avp_len -= 2; /* Special Case for handling Extended Vendor Id */ if (avp_type == EXTENDED_VENDOR_ID) { idx += 2; proto_tree_add_item(l2tp_avp_tree, hf_l2tp_avp_vendor_id, tvb, idx, 4, ENC_BIG_ENDIAN); idx += 4; continue; } else { proto_tree_add_item(l2tp_avp_tree, hf_l2tp_avp_vendor_id, tvb, idx, 2, ENC_BIG_ENDIAN); idx += 2; avp_len -= 2; } proto_tree_add_uint(l2tp_avp_tree, hf_l2tp_avp_type, tvb, idx, 2, avp_type); idx += 2; avp_len -= 2; switch (avp_type) { case CONTROL_MESSAGE: msg_type = tvb_get_ntohs(tvb, idx); l2tp_cntrl_data->msg_type = msg_type; proto_tree_add_item(l2tp_avp_tree, hf_l2tp_avp_message_type, tvb, idx, 2, ENC_BIG_ENDIAN); if (msg_type == MESSAGE_TYPE_StopCCN) { isStopCcn = TRUE; } break; case RESULT_ERROR_CODE: if (avp_len < 2) break; if (isStopCcn) { proto_tree_add_item(l2tp_avp_tree, hf_l2tp_stop_ccn_result_code, tvb, idx, 2, ENC_BIG_ENDIAN); } else { proto_tree_add_item(l2tp_avp_tree, hf_l2tp_result_code, tvb, idx, 2, ENC_BIG_ENDIAN); } idx += 2; avp_len -= 2; if (avp_len < 2) break; proto_tree_add_item(l2tp_avp_tree, hf_l2tp_avp_error_code, tvb, idx, 2, ENC_BIG_ENDIAN); idx += 2; avp_len -= 2; if (avp_len == 0) break; proto_tree_add_item(l2tp_avp_tree, hf_l2tp_avp_error_message, tvb, idx, avp_len, ENC_ASCII|ENC_NA); break; case PROTOCOL_VERSION: if (avp_len < 1) break; proto_tree_add_item(l2tp_avp_tree, hf_l2tp_avp_protocol_version, tvb, idx, 1, ENC_BIG_ENDIAN); idx += 1; avp_len -= 1; proto_tree_add_item(l2tp_avp_tree, hf_l2tp_avp_protocol_revision, tvb, idx, 1, ENC_BIG_ENDIAN); break; case FRAMING_CAPABILITIES: proto_tree_add_item(l2tp_avp_tree, hf_l2tp_avp_async_framing_supported, tvb, idx, 4, ENC_BIG_ENDIAN); proto_tree_add_item(l2tp_avp_tree, hf_l2tp_avp_sync_framing_supported, tvb, idx, 4, ENC_BIG_ENDIAN); break; case BEARER_CAPABILITIES: proto_tree_add_item(l2tp_avp_tree, hf_l2tp_avp_analog_access_supported, tvb, idx, 4, ENC_BIG_ENDIAN); proto_tree_add_item(l2tp_avp_tree, hf_l2tp_avp_digital_access_supported, tvb, idx, 4, ENC_BIG_ENDIAN); break; case TIE_BREAKER: proto_tree_add_item(l2tp_avp_tree, hf_l2tp_tie_breaker, tvb, idx, 8, ENC_BIG_ENDIAN); break; case FIRMWARE_REVISION: proto_tree_add_item(l2tp_avp_tree, hf_l2tp_avp_firmware_revision, tvb, idx, 2, ENC_BIG_ENDIAN); break; case HOST_NAME: proto_tree_add_item(l2tp_avp_tree, hf_l2tp_avp_host_name, tvb, idx, avp_len, ENC_NA|ENC_ASCII); break; case VENDOR_NAME: proto_tree_add_item(l2tp_avp_tree, hf_l2tp_avp_vendor_name, tvb, idx, avp_len, ENC_NA|ENC_ASCII); break; case ASSIGNED_TUNNEL_ID: proto_tree_add_item(l2tp_avp_tree, hf_l2tp_avp_assigned_tunnel_id, tvb, idx, 2, ENC_BIG_ENDIAN); break; case RECEIVE_WINDOW_SIZE: proto_tree_add_item(l2tp_avp_tree, hf_l2tp_avp_receive_window_size, tvb, idx, 2, ENC_BIG_ENDIAN); break; case CHALLENGE: proto_tree_add_item(l2tp_avp_tree, hf_l2tp_avp_chap_challenge, tvb, idx, avp_len, ENC_NA); break; case CAUSE_CODE: /* * XXX - export stuff from the Q.931 dissector * to dissect the cause code and cause message, * and use it. */ if (avp_len < 2) break; proto_tree_add_item(l2tp_avp_tree, hf_l2tp_avp_cause_code, tvb, idx, 2, ENC_BIG_ENDIAN); idx += 2; avp_len -= 2; if (avp_len < 1) break; proto_tree_add_item(l2tp_avp_tree, hf_l2tp_avp_cause_msg, tvb, idx, 1, ENC_BIG_ENDIAN); idx += 1; avp_len -= 1; if (avp_len == 0) break; proto_tree_add_item(l2tp_avp_tree, hf_l2tp_avp_advisory_msg, tvb, idx, avp_len, ENC_NA|ENC_ASCII); break; case CHALLENGE_RESPONSE: proto_tree_add_item(l2tp_avp_tree, hf_l2tp_avp_chap_challenge_response, tvb, idx, 16, ENC_NA); break; case ASSIGNED_SESSION: proto_tree_add_item(l2tp_avp_tree, hf_l2tp_avp_assigned_session_id, tvb, idx, 2, ENC_BIG_ENDIAN); break; case CALL_SERIAL_NUMBER: proto_tree_add_item(l2tp_avp_tree, hf_l2tp_avp_call_serial_number, tvb, idx, 4, ENC_BIG_ENDIAN); break; case MINIMUM_BPS: proto_tree_add_item(l2tp_avp_tree, hf_l2tp_avp_minimum_bps, tvb, idx, 4, ENC_BIG_ENDIAN); break; case MAXIMUM_BPS: proto_tree_add_item(l2tp_avp_tree, hf_l2tp_avp_maximum_bps, tvb, idx, 4, ENC_BIG_ENDIAN); break; case BEARER_TYPE: proto_tree_add_item(l2tp_avp_tree, hf_l2tp_avp_analog_bearer_type, tvb, idx, 4, ENC_BIG_ENDIAN); proto_tree_add_item(l2tp_avp_tree, hf_l2tp_avp_digital_bearer_type, tvb, idx, 4, ENC_BIG_ENDIAN); break; case FRAMING_TYPE: proto_tree_add_item(l2tp_avp_tree, hf_l2tp_avp_async_framing_type, tvb, idx, 4, ENC_BIG_ENDIAN); proto_tree_add_item(l2tp_avp_tree, hf_l2tp_avp_sync_framing_type, tvb, idx, 4, ENC_BIG_ENDIAN); break; case CALLED_NUMBER: if (avp_len == 0) break; proto_tree_add_item(l2tp_avp_tree, hf_l2tp_avp_called_number, tvb, idx, avp_len, ENC_ASCII|ENC_NA); break; case CALLING_NUMBER: if (avp_len == 0) break; proto_tree_add_item(l2tp_avp_tree, hf_l2tp_avp_calling_number, tvb, idx, avp_len, ENC_ASCII|ENC_NA); break; case SUB_ADDRESS: if (avp_len == 0) break; proto_tree_add_item(l2tp_avp_tree, hf_l2tp_avp_sub_address, tvb, idx, avp_len, ENC_NA|ENC_ASCII); break; case TX_CONNECT_SPEED: proto_tree_add_item(l2tp_avp_tree, hf_l2tp_avp_connect_speed, tvb, idx, 4, ENC_BIG_ENDIAN); break; case PHYSICAL_CHANNEL: proto_tree_add_item(l2tp_avp_tree, hf_l2tp_avp_physical_channel, tvb, idx, 4, ENC_BIG_ENDIAN); break; case INITIAL_RECEIVED_LCP_CONFREQ: te = proto_tree_add_item(l2tp_avp_tree, hf_l2tp_avp_initial_received_lcp_confreq, tvb, idx, avp_len, ENC_NA); l2tp_lcp_avp_tree = proto_item_add_subtree(te, ett_l2tp_lcp); next_tvb = tvb_new_subset_length(tvb, idx, avp_len); call_dissector(ppp_lcp_options_handle, next_tvb, pinfo, l2tp_lcp_avp_tree ); break; case LAST_SENT_LCP_CONFREQ: te = proto_tree_add_item(l2tp_avp_tree, hf_l2tp_avp_last_sent_lcp_confreq, tvb, idx, avp_len, ENC_NA); l2tp_lcp_avp_tree = proto_item_add_subtree(te, ett_l2tp_lcp); next_tvb = tvb_new_subset_length(tvb, idx, avp_len); call_dissector(ppp_lcp_options_handle, next_tvb, pinfo, l2tp_lcp_avp_tree ); break; case LAST_RECEIVED_LCP_CONFREQ: te = proto_tree_add_item(l2tp_avp_tree, hf_l2tp_avp_last_received_lcp_confreq, tvb, idx, avp_len, ENC_NA); l2tp_lcp_avp_tree = proto_item_add_subtree(te, ett_l2tp_lcp); next_tvb = tvb_new_subset_length(tvb, idx, avp_len); call_dissector(ppp_lcp_options_handle, next_tvb, pinfo, l2tp_lcp_avp_tree ); break; case PROXY_AUTHEN_TYPE: msg_type = tvb_get_ntohs(tvb, idx); proto_tree_add_item(l2tp_avp_tree, hf_l2tp_avp_proxy_authen_type, tvb, idx, 2, ENC_BIG_ENDIAN); break; case PROXY_AUTHEN_NAME: if (avp_len == 0) break; proto_tree_add_item(l2tp_avp_tree, hf_l2tp_avp_proxy_authen_name, tvb, idx, avp_len, ENC_NA|ENC_ASCII); break; case PROXY_AUTHEN_CHALLENGE: proto_tree_add_item(l2tp_avp_tree, hf_l2tp_avp_proxy_authen_challenge, tvb, idx, avp_len, ENC_NA); break; case PROXY_AUTHEN_ID: proto_tree_add_item(l2tp_avp_tree, hf_l2tp_avp_proxy_authen_id, tvb, idx + 1, 1, ENC_BIG_ENDIAN); break; case PROXY_AUTHEN_RESPONSE: proto_tree_add_item(l2tp_avp_tree, hf_l2tp_avp_proxy_authen_response, tvb, idx, avp_len, ENC_NA); break; case CALL_STATUS_AVPS: if (avp_len < 2) break; idx += 2; avp_len -= 2; if (avp_len < 4) break; proto_tree_add_item(l2tp_avp_tree, hf_l2tp_avp_crc_errors, tvb, idx, 4, ENC_BIG_ENDIAN); idx += 4; avp_len -= 4; if (avp_len < 4) break; proto_tree_add_item(l2tp_avp_tree, hf_l2tp_avp_framing_errors, tvb, idx, 4, ENC_BIG_ENDIAN); idx += 4; avp_len -= 4; if (avp_len < 4) break; proto_tree_add_item(l2tp_avp_tree, hf_l2tp_avp_hardware_overruns, tvb, idx, 4, ENC_BIG_ENDIAN); idx += 4; avp_len -= 4; if (avp_len < 4) break; proto_tree_add_item(l2tp_avp_tree, hf_l2tp_avp_buffer_overruns, tvb, idx, 4, ENC_BIG_ENDIAN); idx += 4; avp_len -= 4; if (avp_len < 4) break; proto_tree_add_item(l2tp_avp_tree, hf_l2tp_avp_time_out_errors, tvb, idx, 4, ENC_BIG_ENDIAN); idx += 4; avp_len -= 4; if (avp_len < 4) break; proto_tree_add_item(l2tp_avp_tree, hf_l2tp_avp_alignment_errors, tvb, idx, 4, ENC_BIG_ENDIAN); idx += 4; avp_len -= 4; break; case ACCM: if (avp_len < 2) break; idx += 2; avp_len -= 2; if (avp_len < 4) break; proto_tree_add_item(l2tp_avp_tree, hf_l2tp_avp_send_accm, tvb, idx, 4, ENC_BIG_ENDIAN); idx += 4; avp_len -= 4; if (avp_len < 4) break; proto_tree_add_item(l2tp_avp_tree, hf_l2tp_avp_receive_accm, tvb, idx, 4, ENC_BIG_ENDIAN); idx += 4; avp_len -= 4; break; case RANDOM_VECTOR: proto_tree_add_item(l2tp_avp_tree, hf_l2tp_avp_random_vector, tvb, idx, avp_len, ENC_NA); break; case PRIVATE_GROUP_ID: proto_tree_add_item(l2tp_avp_tree, hf_l2tp_avp_private_group_id, tvb, idx, avp_len, ENC_NA); break; case RX_CONNECT_SPEED: proto_tree_add_item(l2tp_avp_tree, hf_l2tp_avp_rx_connect_speed, tvb, idx, 4, ENC_BIG_ENDIAN); break; case PPP_DISCONNECT_CAUSE_CODE: if (avp_len < 2) break; proto_tree_add_item(l2tp_avp_tree, hf_l2tp_avp_disconnect_code, tvb, idx, 2, ENC_BIG_ENDIAN); idx += 2; avp_len -= 2; if (avp_len < 2) break; proto_tree_add_item(l2tp_avp_tree, hf_l2tp_avp_control_protocol_number, tvb, idx, 2, ENC_BIG_ENDIAN); idx += 2; avp_len -= 2; if (avp_len < 1) break; proto_tree_add_item(l2tp_avp_tree, hf_l2tp_avp_cause_code_direction, tvb, idx, 1, ENC_BIG_ENDIAN); idx += 1; avp_len -= 1; if (avp_len == 0) break; proto_tree_add_item(l2tp_avp_tree, hf_l2tp_avp_cause_code_message, tvb, idx, avp_len, ENC_NA|ENC_ASCII); break; case MESSAGE_DIGEST: { digest_idx = idx; digest_avp_len = avp_len; digest_item = proto_tree_add_item(l2tp_avp_tree, hf_l2tp_avp_message_digest, tvb, idx, avp_len, ENC_NA); break; } case ROUTER_ID: proto_tree_add_item(l2tp_avp_tree, hf_l2tp_avp_router_id, tvb, idx, 4, ENC_BIG_ENDIAN); break; case ASSIGNED_CONTROL_CONN_ID: proto_tree_add_item(l2tp_avp_tree, hf_l2tp_avp_assigned_control_conn_id, tvb, idx, 4, ENC_BIG_ENDIAN); store_ccid(tunnel, tvb, idx, msg_type); break; case PW_CAPABILITY_LIST: l2tp_avp_tree_sub = proto_tree_add_subtree(l2tp_avp_tree, tvb, idx, avp_len, ett_l2tp_avp_sub, NULL, "Pseudowire Capabilities List"); while (avp_len >= 2) { proto_tree_add_item(l2tp_avp_tree_sub, hf_l2tp_avp_pw_type, tvb, idx, 2, ENC_BIG_ENDIAN); idx += 2; avp_len -= 2; } break; case LOCAL_SESSION_ID: proto_tree_add_item(l2tp_avp_tree, hf_l2tp_avp_local_session_id, tvb, idx, 4, ENC_BIG_ENDIAN); col_append_fstr(pinfo->cinfo,COL_INFO, ", LSID: %2u", tvb_get_ntohl(tvb, idx)); session = store_lsession_id(session, tvb, idx, msg_type); break; case REMOTE_SESSION_ID: proto_tree_add_item(l2tp_avp_tree, hf_l2tp_avp_remote_session_id, tvb, idx, 4, ENC_BIG_ENDIAN); col_append_fstr(pinfo->cinfo,COL_INFO, ", RSID: %2u", tvb_get_ntohl(tvb, idx)); session = store_rsession_id(session, tvb, idx, msg_type); break; case ASSIGNED_COOKIE: proto_tree_add_item(l2tp_avp_tree, hf_l2tp_avp_assigned_cookie, tvb, idx, avp_len, ENC_NA); session = store_cookie_len(session, avp_len, msg_type); break; case REMOTE_END_ID: proto_tree_add_item(l2tp_avp_tree, hf_l2tp_avp_remote_end_id, tvb, idx, avp_len, ENC_NA|ENC_ASCII); break; case PW_TYPE: proto_tree_add_item(l2tp_avp_tree, hf_l2tp_avp_pseudowire_type, tvb, idx, 2, ENC_BIG_ENDIAN); session = store_pw_type(session, tvb, idx, msg_type); break; case L2_SPECIFIC_SUBLAYER: proto_tree_add_item(l2tp_avp_tree, hf_l2tp_avp_layer2_specific_sublayer, tvb, idx, 2, ENC_BIG_ENDIAN); session = store_l2_sublayer(session, tvb, idx, msg_type); break; case DATA_SEQUENCING: proto_tree_add_item(l2tp_avp_tree, hf_l2tp_avp_data_sequencing, tvb, idx, 2, ENC_BIG_ENDIAN); break; case CIRCUIT_STATUS: proto_tree_add_item(l2tp_avp_tree, hf_l2tp_avp_circuit_status, tvb, idx, 2, ENC_BIG_ENDIAN); proto_tree_add_item(l2tp_avp_tree, hf_l2tp_avp_circuit_type, tvb, idx, 2, ENC_BIG_ENDIAN); break; case PREFERRED_LANGUAGE: proto_tree_add_item(l2tp_avp_tree, hf_l2tp_avp_preferred_language, tvb, idx, avp_len, ENC_NA|ENC_ASCII); break; case CTL_MSG_AUTH_NONCE: proto_tree_add_item(l2tp_avp_tree, hf_l2tp_avp_nonce, tvb, idx, avp_len, ENC_NA); store_cma_nonce(tunnel, tvb, idx, avp_len, msg_type); break; case TX_CONNECT_SPEED_V3: if (avp_len < 8) break; proto_tree_add_item(l2tp_avp_tree, hf_l2tp_avp_tx_connect_speed_v3, tvb, idx, 8, ENC_BIG_ENDIAN); break; case RX_CONNECT_SPEED_V3: if (avp_len < 8) break; proto_tree_add_item(l2tp_avp_tree, hf_l2tp_avp_rx_connect_speed_v3, tvb, idx, 8, ENC_BIG_ENDIAN); break; case CONNECT_SPEED_UPDATE: { tc = proto_tree_add_item(l2tp_avp_tree, hf_l2tp_avp_csu, tvb, idx, avp_len, ENC_NA); l2tp_avp_csu_tree = proto_item_add_subtree(tc, ett_l2tp_csu); if (avp_len == 12) { /* L2TPv2 */ proto_tree_add_item(l2tp_avp_csu_tree, hf_l2tp_avp_csu_res, tvb, idx, 2, ENC_BIG_ENDIAN); proto_tree_add_item(l2tp_avp_csu_tree, hf_l2tp_avp_csu_remote_session_id_v2, tvb, idx+2, 2, ENC_BIG_ENDIAN); proto_tree_add_item(l2tp_avp_csu_tree, hf_l2tp_avp_csu_current_tx_speed_v2, tvb, idx+4, 4, ENC_BIG_ENDIAN); proto_tree_add_item(l2tp_avp_csu_tree, hf_l2tp_avp_csu_current_rx_speed_v2, tvb, idx+8, 4, ENC_BIG_ENDIAN); } else if (avp_len == 20) { /* L2TPv3 */ proto_tree_add_item(l2tp_avp_csu_tree, hf_l2tp_avp_csu_remote_session_id_v3, tvb, idx, 4, ENC_BIG_ENDIAN); proto_tree_add_item(l2tp_avp_csu_tree, hf_l2tp_avp_csu_current_tx_speed_v3, tvb, idx+4, 8, ENC_BIG_ENDIAN); proto_tree_add_item(l2tp_avp_csu_tree, hf_l2tp_avp_csu_current_rx_speed_v3, tvb, idx+12, 8, ENC_BIG_ENDIAN); } break; } default: if(avp_len>0) proto_tree_add_expert(l2tp_avp_tree, pinfo, &ei_l2tp_vendor_specific_avp_data, tvb, idx, avp_len); break; } idx += avp_len; } /* SCCRQ digest can only be calculated once we know whether nonces are being used */ if (digest_avp_len) { if (check_control_digest(tunnel, tvb, length, digest_idx, digest_avp_len, msg_type, pinfo) < 0) expert_add_info(pinfo, digest_item, &ei_l2tp_incorrect_digest); } update_session(tunnel, session); } /* * Processes Data Messages for v3 IP and UDP, starting from the Session ID * (common to IP and UDP). Dissects the L2TPv3 Session header, the (optional) * L2-Specific sublayer and calls the appropriate dissector for the payload. */ static void process_l2tpv3_data(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, proto_tree *l2tp_tree, proto_item *l2tp_item, int *pIdx, l2tpv3_tunnel_t *tunnel) { int idx = *pIdx; int sid; guint32 oam_cell = 0; proto_tree *l2_specific = NULL; proto_item *ti = NULL; tvbuff_t *next_tvb; gint cookie_len = l2tpv3_cookie; gint l2_spec = l2tpv3_l2_specific; gint pw_type = -1; lcce_settings_t *lcce = NULL; l2tpv3_session_t *session = NULL; /* Get Session ID */ sid = tvb_get_ntohl(tvb, idx); idx += 4; if (tunnel) { if (addresses_equal(&tunnel->lcce1, &pinfo->dst)) { session = find_session(tunnel, sid, 0); if (session) lcce = &session->lcce1; } else { session = find_session(tunnel, 0, sid); if (session) lcce = &session->lcce2; } } if (lcce) { if (l2_spec == -1) l2_spec = lcce->l2_specific; if (cookie_len == -1) cookie_len = lcce->cookie_len; if (pw_type == -1) pw_type = session->pw_type; } if (l2_spec == -1) l2_spec = L2TPv3_L2_SPECIFIC_NONE; if (pw_type == -1) pw_type = L2TPv3_PROTOCOL_DEFAULT; if (cookie_len == -1) cookie_len = L2TPv3_COOKIE_DEFAULT; col_add_fstr(pinfo->cinfo,COL_INFO, "%s (session id=%u)", data_msg, sid); if (tree) { proto_tree_add_item(l2tp_tree, hf_l2tp_sid, tvb, idx-4, 4, ENC_BIG_ENDIAN); proto_item_set_len(l2tp_item, idx); if (!(tvb_offset_exists(tvb, idx))) return; if (cookie_len != 0) proto_tree_add_item(l2tp_tree, hf_l2tp_cookie, tvb, idx, cookie_len, ENC_NA); } switch(l2_spec){ case L2TPv3_L2_SPECIFIC_DEFAULT: if (tree) { ti = proto_tree_add_item(tree, hf_l2tp_l2_spec_def, tvb, idx + cookie_len, 4, ENC_NA); l2_specific = proto_item_add_subtree(ti, ett_l2tp_l2_spec); proto_tree_add_item(l2_specific, hf_l2tp_l2_spec_s, tvb, idx + cookie_len, 1, ENC_BIG_ENDIAN); proto_tree_add_item(l2_specific, hf_l2tp_l2_spec_sequence, tvb, idx + cookie_len + 1, 3, ENC_BIG_ENDIAN); } next_tvb = tvb_new_subset_remaining(tvb, idx + cookie_len + 4); break; case L2TPv3_L2_SPECIFIC_DOCSIS_DMPT: if (tree) { ti = proto_tree_add_item(tree, hf_l2tp_l2_spec_docsis_dmpt, tvb, idx + cookie_len, 4, ENC_NA); l2_specific = proto_item_add_subtree(ti, ett_l2tp_l2_spec); proto_tree_add_item(l2_specific, hf_l2tp_l2_spec_v, tvb, idx + cookie_len,1, ENC_BIG_ENDIAN); proto_tree_add_item(l2_specific, hf_l2tp_l2_spec_s, tvb, idx + cookie_len,1, ENC_BIG_ENDIAN); proto_tree_add_item(l2_specific, hf_l2tp_l2_spec_h, tvb, idx + cookie_len,1, ENC_BIG_ENDIAN); proto_tree_add_item(l2_specific, hf_l2tp_l2_spec_flow_id, tvb, idx + cookie_len,1, ENC_BIG_ENDIAN); proto_tree_add_item(l2_specific, hf_l2tp_l2_spec_sequence, tvb, idx + cookie_len + 2,2, ENC_BIG_ENDIAN); } next_tvb = tvb_new_subset_remaining(tvb, idx + cookie_len + 4); break; case L2TPv3_L2_SPECIFIC_ATM: if (tree) { ti = proto_tree_add_item(tree, hf_l2tp_l2_spec_atm, tvb, idx + cookie_len, 4, ENC_NA); l2_specific = proto_item_add_subtree(ti, ett_l2tp_l2_spec); proto_tree_add_item(l2_specific, hf_l2tp_l2_spec_s, tvb, idx + cookie_len, 1, ENC_BIG_ENDIAN); proto_tree_add_item(l2_specific, hf_l2tp_l2_spec_t, tvb, idx + cookie_len, 1, ENC_BIG_ENDIAN); /* * As per RFC 4454, the T bit specifies whether * we're transporting an OAM cell or an AAL5 frame. */ oam_cell = tvb_get_guint8(tvb, idx + cookie_len) & 0x08; proto_tree_add_item(l2_specific, hf_l2tp_l2_spec_g, tvb, idx + cookie_len, 1, ENC_BIG_ENDIAN); proto_tree_add_item(l2_specific, hf_l2tp_l2_spec_c, tvb, idx + cookie_len, 1, ENC_BIG_ENDIAN); proto_tree_add_item(l2_specific, hf_l2tp_l2_spec_u, tvb, idx + cookie_len, 1, ENC_BIG_ENDIAN); proto_tree_add_item(l2_specific, hf_l2tp_l2_spec_sequence, tvb, idx + cookie_len + 1, 3, ENC_BIG_ENDIAN); } next_tvb = tvb_new_subset_remaining(tvb, idx + cookie_len + 4); break; case L2TPv3_L2_SPECIFIC_LAPD: if (tree) proto_tree_add_item(tree, hf_l2tp_lapd_info, tvb, idx + cookie_len + 4, 3, ENC_NA); next_tvb = tvb_new_subset_remaining(tvb, idx + cookie_len+4+3); break; case L2TPv3_L2_SPECIFIC_NONE: default: next_tvb = tvb_new_subset_remaining(tvb, idx + cookie_len); break; } p_add_proto_data(pinfo->pool, pinfo, proto_l2tp, 0, GUINT_TO_POINTER((guint)pw_type)); if (!dissector_try_uint_new(pw_type_table, pw_type, next_tvb, pinfo, tree, FALSE, GUINT_TO_POINTER(oam_cell))) { call_data_dissector(next_tvb, pinfo, tree); } } static const int * l2tp_control_fields[] = { &hf_l2tp_type, &hf_l2tp_length_bit, &hf_l2tp_seq_bit, &hf_l2tp_version, NULL }; /* * Processes v3 data message over UDP, to then call process_l2tpv3_data * from the common part (Session ID) */ static void process_l2tpv3_data_udp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, l2tpv3_conversation_t *l2tp_conv) { proto_tree *l2tp_tree, *ctrl_tree; proto_item *l2tp_item; int idx = 4; /* skip to sid */ int sid; sid = tvb_get_ntohl(tvb, idx); l2tp_item = proto_tree_add_item(tree, proto_l2tp, tvb, 0, -1, ENC_NA); l2tp_tree = proto_item_add_subtree(l2tp_item, ett_l2tp); if (tree) { proto_item_append_text(l2tp_item, " version 3"); ctrl_tree = proto_tree_add_subtree_format(l2tp_tree, tvb, 0, 2, ett_l2tp_ctrl, NULL, "Packet Type: %s Session Id=%u", data_msg, sid); proto_tree_add_bitmask_list(ctrl_tree, tvb, 0, 2, l2tp_control_fields, ENC_BIG_ENDIAN); /* Data in v3 over UDP has this reserved */ proto_tree_add_item(l2tp_tree, hf_l2tp_res, tvb, 2, 2, ENC_BIG_ENDIAN); } /* Call process_l2tpv3_data from Session ID (offset in idx of 4) */ process_l2tpv3_data(tvb, pinfo, tree, l2tp_tree, l2tp_item, &idx, l2tp_conv->tunnel); } /* * Processes v3 data message over IP, to then call process_l2tpv3_data * from the common part (Session ID) */ static void process_l2tpv3_data_ip(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, l2tpv3_conversation_t *l2tp_conv) { proto_tree *l2tp_tree; proto_item *l2tp_item; int idx = 0; int sid; sid = tvb_get_ntohl(tvb, idx); l2tp_item = proto_tree_add_item(tree, proto_l2tp, tvb, 0, -1, ENC_NA); l2tp_tree = proto_item_add_subtree(l2tp_item, ett_l2tp); proto_item_append_text(l2tp_item, " version 3"); proto_tree_add_uint_format(l2tp_tree, hf_l2tp_session_id, tvb, 0, 4, sid, "Packet Type: %s Session Id=%u", data_msg, sid); /* Call process_l2tpv3_data from Session ID (offset in idx of 0) */ process_l2tpv3_data(tvb, pinfo, tree, l2tp_tree, l2tp_item, &idx, l2tp_conv->tunnel); } /* * Processes v3 Control Message over IP, that carries NULL Session ID * to then call process_control_avps after dissecting the control. */ static void process_l2tpv3_control(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, int baseIdx, l2tpv3_conversation_t *l2tp_conv) { proto_tree *l2tp_tree = NULL, *ctrl_tree; proto_item *l2tp_item = NULL; int idx = baseIdx; int tmp_idx; guint16 length = 0; /* Length field */ guint32 ccid = 0; /* Control Connection ID */ guint16 vendor_id = 0; guint16 avp_type; guint16 msg_type; guint16 control = 0; l2tpv3_tunnel_t *tunnel = NULL; l2tpv3_tunnel_t tmp_tunnel; control = tvb_get_ntohs(tvb, idx); idx += 2; /* skip ahead */ if (LENGTH_BIT(control)) { /* length field included ? */ length = tvb_get_ntohs(tvb, idx); idx += 2; } /* Get Control Channel ID */ ccid = tvb_get_ntohl(tvb, idx); idx += 4; tmp_idx = idx; if ((LENGTH_BIT(control))&&(length==12)) /* ZLB Message */ col_add_fstr(pinfo->cinfo, COL_INFO, "%s - ZLB (tunnel id=%u)", control_msg , ccid); else { if (SEQUENCE_BIT(control)) { tmp_idx += 4; } tmp_idx+=2; vendor_id = tvb_get_ntohs(tvb, tmp_idx); tmp_idx+=2; avp_type = tvb_get_ntohs(tvb, tmp_idx); tmp_idx += 2; /* If it's a vendor AVP let the vendor AVP dissector fill in the info column */ if ( vendor_id == VENDOR_IETF ) { if (avp_type == CONTROL_MESSAGE) { /* We print message type */ msg_type = tvb_get_ntohs(tvb, tmp_idx); col_add_fstr(pinfo->cinfo, COL_INFO, "%s - %s (tunnel id=%u)", control_msg , val_to_str_ext(msg_type, &l2tp_message_type_short_str_vals_ext, "Unknown (%u)"), ccid); } else { /* * This is not a control message. * We never pass here except in case of bad l2tp packet! */ col_add_fstr(pinfo->cinfo, COL_INFO, "%s (tunnel id=%u)", control_msg, ccid); } } } if (LENGTH_BIT(control)) { /* * Set the length of this tvbuff to be no longer than the length * in the header. * * XXX - complain if that length is longer than the length of * the tvbuff? Have "set_actual_length()" return a Boolean * and have its callers check the result? */ set_actual_length(tvb, length+baseIdx); } if (tree) { l2tp_item = proto_tree_add_item(tree, proto_l2tp, tvb, 0, -1, ENC_NA); l2tp_tree = proto_item_add_subtree(l2tp_item, ett_l2tp); proto_item_append_text(l2tp_item, " version 3"); if (baseIdx) { proto_tree_add_item(l2tp_tree, hf_l2tp_sid, tvb, 0, 4, ENC_BIG_ENDIAN); } ctrl_tree = proto_tree_add_subtree_format(l2tp_tree, tvb, baseIdx, 2, ett_l2tp_ctrl, NULL, "Packet Type: %s Control Connection Id=%u", (CONTROL_BIT(control) ? control_msg : data_msg), ccid); proto_tree_add_bitmask_list(ctrl_tree, tvb, baseIdx, 2, l2tp_control_fields, ENC_BIG_ENDIAN); } idx = baseIdx + 2; if (LENGTH_BIT(control)) { proto_tree_add_item(l2tp_tree, hf_l2tp_length, tvb, idx, 2, ENC_BIG_ENDIAN); idx += 2; } proto_tree_add_item(l2tp_tree, hf_l2tp_ccid, tvb, idx, 4, ENC_BIG_ENDIAN); idx += 4; if (SEQUENCE_BIT(control)) { proto_tree_add_item(l2tp_tree, hf_l2tp_Ns, tvb, idx, 2, ENC_BIG_ENDIAN); idx += 2; proto_tree_add_item(l2tp_tree, hf_l2tp_Nr, tvb, idx, 2, ENC_BIG_ENDIAN); idx += 2; } if (tree && (LENGTH_BIT(control))&&(length==12)) { proto_tree_add_item(l2tp_tree, hf_l2tp_zero_length_body_message, tvb, 0, 0, ENC_NA); } else { avp_type = tvb_get_ntohs(tvb, idx + 4); if (avp_type == CONTROL_MESSAGE) { msg_type = tvb_get_ntohs(tvb, idx + 6); if (msg_type == MESSAGE_TYPE_SCCRQ) { tunnel = &tmp_tunnel; memset(tunnel, 0, sizeof(l2tpv3_tunnel_t)); tunnel->conv = l2tp_conv; copy_address_wmem(wmem_file_scope(), &tunnel->lcce1, &pinfo->src); copy_address_wmem(wmem_file_scope(), &tunnel->lcce2, &pinfo->dst); } } } if (!LENGTH_BIT(control)) { return; } if (tunnel == NULL) { tunnel = l2tp_conv->tunnel; } process_control_avps(tvb, pinfo, l2tp_tree, idx, length+baseIdx, ccid, tunnel); if (tunnel == &tmp_tunnel && l2tp_conv->tunnel == NULL) { l2tp_conv->tunnel = wmem_new0(wmem_file_scope(), l2tpv3_tunnel_t); memcpy(l2tp_conv->tunnel, &tmp_tunnel, sizeof(l2tpv3_tunnel_t)); } } /* * Dissector for L2TP over UDP. For v2, calls process_control_avps for * control messages, or the ppp dissector based on the control bit. * For v3, calls either process_l2tpv3_control or process_l2tpv3_data_udp * based on the control bit. */ static int dissect_l2tp_udp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_) { proto_tree *l2tp_tree, *ctrl_tree; proto_item *l2tp_item; int idx = 0; int tmp_idx; guint16 length = 0; /* Length field */ guint16 tid; /* Tunnel ID */ guint16 cid; /* Call ID */ guint16 offset_size; /* Offset size */ guint16 avp_type; guint16 msg_type; guint16 control; tvbuff_t *next_tvb; conversation_t *conv = NULL; l2tpv3_conversation_t *l2tp_conv = NULL; /* * Don't accept packets that aren't for an L2TP version we know, * as they might not be L2TP packets even though they happen * to be coming from or going to the L2TP port. */ if (tvb_captured_length(tvb) < 2) return 0; /* not enough information to check */ control = tvb_get_ntohs(tvb, 0); switch (L2TP_VERSION(control)) { case 2: case 3: break; default: return 0; } conv = find_conversation(pinfo->num, &pinfo->src, &pinfo->dst, PT_UDP, pinfo->srcport, pinfo->destport, NO_PORT_B); if (conv == NULL) { conv = find_conversation(pinfo->num, &pinfo->src, &pinfo->dst, PT_UDP, pinfo->srcport, pinfo->destport, 0); } if ((conv == NULL) || (conversation_get_dissector(conv, pinfo->num) != l2tp_udp_handle)) { conv = conversation_new(pinfo->num, &pinfo->src, &pinfo->dst, PT_UDP, pinfo->srcport, 0, NO_PORT2); conversation_set_dissector(conv, l2tp_udp_handle); } col_set_str(pinfo->cinfo, COL_PROTOCOL, "L2TP"); col_clear(pinfo->cinfo, COL_INFO); switch (L2TP_VERSION(control)) { case 2: break; case 3: l2tp_conv = (l2tpv3_conversation_t *)conversation_get_proto_data(conv, proto_l2tp); if (!l2tp_conv) { l2tp_conv = wmem_new0(wmem_file_scope(), l2tpv3_conversation_t); l2tp_conv->pt = PT_UDP; conversation_add_proto_data(conv, proto_l2tp, (void *)l2tp_conv); } col_set_str(pinfo->cinfo, COL_PROTOCOL, "L2TPv3"); if (CONTROL_BIT(control)) { /* Call to process l2tp v3 control message */ process_l2tpv3_control(tvb, pinfo, tree, 0, l2tp_conv); } else { /* Call to process l2tp v3 data message */ process_l2tpv3_data_udp(tvb, pinfo, tree, l2tp_conv); } return tvb_reported_length(tvb); } if (LENGTH_BIT(control)) { /* length field included ? */ idx += 2; /* skip ahead */ length = tvb_get_ntohs(tvb, idx); } /* collect the tunnel id & call id */ idx += 2; tid = tvb_get_ntohs(tvb, idx); idx += 2; cid = tvb_get_ntohs(tvb, idx); if (CONTROL_BIT(control)) { /* CONTROL MESSAGE */ tmp_idx = idx; if ((LENGTH_BIT(control))&&(length==12)) /* ZLB Message */ col_add_fstr(pinfo->cinfo, COL_INFO, "%s - ZLB (tunnel id=%d, session id=%u)", control_msg, tid, cid); else { if (SEQUENCE_BIT(control)) { tmp_idx += 4; } tmp_idx+=4; avp_type = tvb_get_ntohs(tvb, (tmp_idx+=2)); if (avp_type == CONTROL_MESSAGE) { /* We print message type */ msg_type = tvb_get_ntohs(tvb, tmp_idx+2); col_add_fstr(pinfo->cinfo, COL_INFO, "%s - %s (tunnel id=%u, session id=%u)", control_msg, val_to_str_ext(msg_type, &l2tp_message_type_short_str_vals_ext, "Unknown (%u)"), tid, cid); } else { /* * This is not a control message. * We never pass here except in case of bad l2tp packet! */ col_add_fstr(pinfo->cinfo, COL_INFO, "%s (tunnel id=%u, session id=%u)", control_msg, tid, cid); } } } else { /* DATA Message */ col_add_fstr(pinfo->cinfo, COL_INFO, "%s (tunnel id=%u, session id=%u)", data_msg, tid, cid); } if (LENGTH_BIT(control)) { /* * Set the length of this tvbuff to be no longer than the length * in the header. * * XXX - complain if that length is longer than the length of * the tvbuff? Have "set_actual_length()" return a Boolean * and have its callers check the result? */ set_actual_length(tvb, length); } l2tp_item = proto_tree_add_item(tree,proto_l2tp, tvb, 0, -1, ENC_NA); l2tp_tree = proto_item_add_subtree(l2tp_item, ett_l2tp); if (tree) { static const int * control_fields[] = { &hf_l2tp_type, &hf_l2tp_length_bit, &hf_l2tp_seq_bit, &hf_l2tp_offset_bit, &hf_l2tp_priority, &hf_l2tp_version, NULL }; ctrl_tree = proto_tree_add_subtree_format(l2tp_tree, tvb, 0, 2, ett_l2tp_ctrl, NULL, "Packet Type: %s Tunnel Id=%d Session Id=%d", (CONTROL_BIT(control) ? control_msg : data_msg), tid, cid); proto_tree_add_bitmask_list(ctrl_tree, tvb, 0, 2, control_fields, ENC_BIG_ENDIAN); } idx = 2; if (LENGTH_BIT(control)) { if (tree) { proto_tree_add_item(l2tp_tree, hf_l2tp_length, tvb, idx, 2, ENC_BIG_ENDIAN); } idx += 2; } if (tree) { proto_tree_add_item(l2tp_tree, hf_l2tp_tunnel, tvb, idx, 2, ENC_BIG_ENDIAN); } idx += 2; if (tree) { proto_tree_add_item(l2tp_tree, hf_l2tp_session, tvb, idx, 2, ENC_BIG_ENDIAN); } idx += 2; if (SEQUENCE_BIT(control)) { if (tree) { proto_tree_add_item(l2tp_tree, hf_l2tp_Ns, tvb, idx, 2, ENC_BIG_ENDIAN); } idx += 2; if (tree) { proto_tree_add_item(l2tp_tree, hf_l2tp_Nr, tvb, idx, 2, ENC_BIG_ENDIAN); } idx += 2; } if (OFFSET_BIT(control)) { offset_size = tvb_get_ntohs(tvb, idx); if (tree) { proto_tree_add_uint(l2tp_tree, hf_l2tp_offset, tvb, idx, 2, offset_size); } idx += 2; if (offset_size != 0) { if (tree) { proto_tree_add_item(l2tp_tree, hf_l2tp_offset_padding, tvb, idx, offset_size, ENC_NA); } idx += offset_size; } } if (tree && (LENGTH_BIT(control))&&(length==12)) { proto_tree_add_item(l2tp_tree, hf_l2tp_zero_length_body_message, tvb, 0, 0, ENC_NA); } if (!CONTROL_BIT(control)) { /* Data Messages so we are done */ if (tree) proto_item_set_len(l2tp_item, idx); /* If we have data, signified by having a length bit, dissect it */ if (tvb_offset_exists(tvb, idx)) { next_tvb = tvb_new_subset_remaining(tvb, idx); call_dissector(ppp_hdlc_handle, next_tvb, pinfo, tree); } return tvb_reported_length(tvb); } if (LENGTH_BIT(control)) process_control_avps(tvb, pinfo, l2tp_tree, idx, length, -1, NULL); return tvb_reported_length(tvb); } /* * Only L2TPv3 runs directly over IP, and dissect_l2tp_ip starts dissecting * those packets to call either process_l2tpv3_control for Control Messages * or process_l2tpv3_data_ip for Data Messages over IP, based on the * Session ID */ static int dissect_l2tp_ip(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_) { int idx = 0; guint32 sid; /* Session ID */ conversation_t *conv = NULL; l2tpv3_conversation_t *l2tp_conv = NULL; conv = find_or_create_conversation(pinfo); l2tp_conv = (l2tpv3_conversation_t *)conversation_get_proto_data(conv, proto_l2tp); if (!l2tp_conv) { l2tp_conv = wmem_new0(wmem_file_scope(), l2tpv3_conversation_t); l2tp_conv->pt = PT_NONE; conversation_add_proto_data(conv, proto_l2tp, (void *)l2tp_conv); } /* Only L2TPv3 runs directly over IP */ col_set_str(pinfo->cinfo, COL_PROTOCOL, "L2TPv3"); col_clear(pinfo->cinfo, COL_INFO); sid = tvb_get_ntohl(tvb, idx); if (sid == 0) { /* This is control message */ /* Call to process l2tp v3 control message */ process_l2tpv3_control(tvb, pinfo, tree, 4, l2tp_conv); } else { /* Call to process l2tp v3 data message */ process_l2tpv3_data_ip(tvb, pinfo, tree, l2tp_conv); } return tvb_captured_length(tvb); } static int dissect_atm_oam_llc(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data) { guint32 oam_cell = GPOINTER_TO_UINT(data); if (oam_cell) { call_dissector(atm_oam_handle, tvb, pinfo, tree); } else { call_dissector(llc_handle, tvb, pinfo, tree); } return tvb_captured_length(tvb); } static void l2tp_cleanup(void) { GSList *iterator = list_heads; while (iterator) { if (iterator->data != NULL) g_slist_free((GSList *)iterator->data); iterator = g_slist_next(iterator); } if (list_heads != NULL) { g_slist_free(list_heads); list_heads = NULL; } } /* registration with the filtering engine */ void proto_register_l2tp(void) { static hf_register_info hf[] = { { &hf_l2tp_type, { "Type", "l2tp.type", FT_UINT16, BASE_DEC, VALS(l2tp_type_vals), 0x8000, "Type bit", HFILL }}, { &hf_l2tp_length_bit, { "Length Bit", "l2tp.length_bit", FT_BOOLEAN, 16, TFS(&l2tp_length_bit_truth), 0x4000, NULL, HFILL }}, { &hf_l2tp_seq_bit, { "Sequence Bit", "l2tp.seq_bit", FT_BOOLEAN, 16, TFS(&l2tp_seq_bit_truth), 0x0800, NULL, HFILL }}, { &hf_l2tp_offset_bit, { "Offset bit", "l2tp.offset_bit", FT_BOOLEAN, 16, TFS(&l2tp_offset_bit_truth), 0x0200, NULL, HFILL }}, { &hf_l2tp_priority, { "Priority", "l2tp.priority", FT_BOOLEAN, 16, TFS(&l2tp_priority_truth), 0x0100, "Priority bit", HFILL }}, { &hf_l2tp_version, { "Version", "l2tp.version", FT_UINT16, BASE_DEC, NULL, 0x000f, NULL, HFILL }}, { &hf_l2tp_length, { "Length","l2tp.length", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_l2tp_tunnel, { "Tunnel ID","l2tp.tunnel", FT_UINT16, BASE_DEC, NULL, 0x0, /* Probably should be FT_BYTES */ NULL, HFILL }}, { &hf_l2tp_session, { "Session ID","l2tp.session", FT_UINT16, BASE_DEC, NULL, 0x0, /* Probably should be FT_BYTES */ NULL, HFILL }}, { &hf_l2tp_Ns, { "Ns","l2tp.Ns", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_l2tp_Nr, { "Nr","l2tp.Nr", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_l2tp_offset, { "Offset","l2tp.offset", FT_UINT16, BASE_DEC, NULL, 0x0, "Number of octets past the L2TP header at which the payload data starts.", HFILL }}, { &hf_l2tp_avp_mandatory, { "Mandatory", "l2tp.avp.mandatory", FT_BOOLEAN, 16, NULL, 0x8000, NULL, HFILL }}, { &hf_l2tp_avp_hidden, { "Hidden", "l2tp.avp.hidden", FT_BOOLEAN, 16, NULL, 0x4000, NULL, HFILL }}, { &hf_l2tp_avp_length, { "Length", "l2tp.avp.length", FT_UINT16, BASE_DEC, NULL, 0x03ff, NULL, HFILL }}, { &hf_l2tp_avp_vendor_id, { "Vendor ID", "l2tp.avp.vendor_id", FT_UINT16, BASE_ENTERPRISES, STRINGS_ENTERPRISES, 0, "AVP Vendor ID", HFILL }}, { &hf_l2tp_avp_type, { "AVP Type", "l2tp.avp.type", FT_UINT16, BASE_DEC|BASE_EXT_STRING, &avp_type_vals_ext, 0, NULL, HFILL }}, { &hf_l2tp_tie_breaker, { "Tie Breaker", "l2tp.tie_breaker", FT_UINT64, BASE_HEX, NULL, 0, NULL, HFILL }}, { &hf_l2tp_sid, { "Session ID","l2tp.sid", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_l2tp_ccid, { "Control Connection ID","l2tp.ccid", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_l2tp_res, { "Reserved","l2tp.res", FT_UINT16, BASE_HEX, NULL, 0x0, NULL, HFILL }}, { &hf_l2tp_cookie, { "Cookie","l2tp.cookie", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_l2tp_l2_spec_def, { "Default L2-Specific Sublayer","l2tp.l2_spec_def", FT_NONE, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_l2tp_l2_spec_atm, { "ATM-Specific Sublayer","l2tp.l2_spec_atm", FT_NONE, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_l2tp_l2_spec_docsis_dmpt, { "DOCSIS DMPT - Specific Sublayer","l2tp.l2_spec_docsis_dmpt", FT_NONE, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_l2tp_l2_spec_v, { "V-bit","l2tp.l2_spec_v", FT_BOOLEAN, 8, NULL, 0x80, "VCCV Bit", HFILL }}, { &hf_l2tp_l2_spec_s, { "S-bit","l2tp.l2_spec_s", FT_BOOLEAN, 8, NULL, 0x40, "Sequence Bit", HFILL }}, { &hf_l2tp_l2_spec_h, { "H-bits","l2tp.l2_spec_h", FT_UINT8, BASE_HEX, NULL, 0x30, "Extended Header Bits", HFILL }}, { &hf_l2tp_l2_spec_t, { "T-bit","l2tp.l2_spec_t", FT_BOOLEAN, 8, NULL, 0x08, "Transport Type Bit", HFILL }}, { &hf_l2tp_l2_spec_g, { "G-bit","l2tp.l2_spec_g", FT_BOOLEAN, 8, NULL, 0x04, "EFCI Bit", HFILL }}, { &hf_l2tp_l2_spec_c, { "C-bit","l2tp.l2_spec_c", FT_BOOLEAN, 8, NULL, 0x02, "CLP Bit", HFILL }}, { &hf_l2tp_l2_spec_u, { "U-bit","l2tp.l2_spec_u", FT_BOOLEAN, 8, NULL, 0x01, "C/R Bit", HFILL }}, { &hf_l2tp_l2_spec_flow_id, { "Flow ID","l2tp.l2_spec_flow_id", FT_UINT8, BASE_HEX, NULL, FLOW_ID_MASK, NULL, HFILL }}, { &hf_l2tp_l2_spec_sequence, { "Sequence Number","l2tp.l2_spec_sequence", FT_UINT24, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_l2tp_cisco_avp_type, { "Type", "l2tp.avp.ciscotype", FT_UINT16, BASE_DEC, VALS(cisco_avp_type_vals), 0, "AVP Type", HFILL }}, { &hf_l2tp_ericsson_avp_type, { "Type", "l2tp.avp.ericssontype", FT_UINT16, BASE_DEC, VALS(ericsson_avp_type_vals), 0, "AVP Type", HFILL }}, { &hf_l2tp_broadband_avp_type, { "Type", "l2tp.avp.broadbandtype", FT_UINT16, BASE_DEC, VALS(broadband_avp_type_vals), 0, "AVP Type", HFILL }}, { &hf_l2tp_cablelabs_avp_type, { "Type", "l2tp.avp.cablelabstype", FT_UINT16, BASE_DEC, VALS(cablelabs_avp_type_vals), 0, "AVP Type", HFILL }}, { &hf_l2tp_avp_message_type, { "Message Type", "l2tp.avp.message_type", FT_UINT16, BASE_DEC|BASE_EXT_STRING, &message_type_vals_ext, 0, NULL, HFILL }}, { &hf_l2tp_avp_assigned_tunnel_id, { "Assigned Tunnel ID", "l2tp.avp.assigned_tunnel_id", FT_UINT16, BASE_DEC, NULL, 0, NULL, HFILL }}, { &hf_l2tp_avp_assigned_control_conn_id, { "Assigned Control Connection ID", "l2tp.avp.assigned_control_conn_id", FT_UINT32, BASE_DEC, NULL, 0, NULL, HFILL }}, { &hf_l2tp_avp_assigned_session_id, { "Assigned Session ID", "l2tp.avp.assigned_session_id", FT_UINT16, BASE_DEC, NULL, 0, NULL, HFILL }}, { &hf_l2tp_avp_remote_session_id, { "Remote Session ID", "l2tp.avp.remote_session_id", FT_UINT32, BASE_DEC, NULL, 0, NULL, HFILL }}, { &hf_l2tp_avp_local_session_id, { "Local Session ID", "l2tp.avp.local_session_id", FT_UINT32, BASE_DEC, NULL, 0, NULL, HFILL }}, { &hf_l2tp_avp_called_number, { "Called Number", "l2tp.avp.called_number", FT_STRING, BASE_NONE, NULL, 0, NULL, HFILL }}, { &hf_l2tp_avp_calling_number, { "Calling Number", "l2tp.avp.calling_number", FT_STRING, BASE_NONE, NULL, 0, NULL, HFILL }}, { &hf_l2tp_cisco_tie_breaker, { "Tie Breaker", "l2tp.cisco.tie_breaker", FT_UINT64, BASE_HEX, NULL, 0, NULL, HFILL }}, { &hf_l2tp_cablel_avp_l_bit, { "L(lock bit)", "l2tp.cablel.l_bit", FT_BOOLEAN, 16, NULL, 0x8000, NULL, HFILL }}, { &hf_l2tp_cablel_avp_tsid_group_id, { "TSID Group ID", "l2tp.cablel.tsid_group_id", FT_UINT16, BASE_DEC, NULL, 0x7f00, NULL, HFILL }}, { &hf_l2tp_cablel_avp_frequency, { "Frequency", "l2tp.cablel.frequency", FT_UINT32, BASE_DEC, NULL, 0, NULL, HFILL }}, { &hf_l2tp_cablel_avp_modulation, { "Modulation", "l2tp.cablel.modulation", FT_UINT16, BASE_DEC, VALS(l2tp_cablel_modulation_vals), 0x000f, NULL, HFILL }}, { &hf_l2tp_cablel_avp_m, { "M", "l2tp.cablel.m", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_l2tp_cablel_avp_n, { "N", "l2tp.cablel.n", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_l2tp_broadband_agent_circuit_id, { "Agent Circuit ID", "l2tp.broadband.agent_circuit_id", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_l2tp_broadband_agent_remote_id, { "Agent Remote ID", "l2tp.broadband.agent_remote_id", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_l2tp_broadband_actual_dr_up, { "Actual Data Rate Upstream", "l2tp.broadband.actual_dr_up", FT_UINT64, BASE_DEC, NULL, 0x0, "Actual Data Rate Upstream in bits per seconds", HFILL }}, { &hf_l2tp_broadband_actual_dr_down, { "Actual Data Rate Downstream", "l2tp.broadband.actual_dr_down", FT_UINT64, BASE_DEC, NULL, 0x0, "Actual Data Rate Downstream in bits per seconds", HFILL }}, { &hf_l2tp_broadband_minimum_dr_up, { "Minimum Data Rate Upstream", "l2tp.broadband.minimum_dr_up", FT_UINT64, BASE_DEC, NULL, 0x0, "Minimum Data Rate Upstream in bits per seconds", HFILL }}, { &hf_l2tp_broadband_minimum_dr_down, { "Minimum Data Rate Downstream", "l2tp.broadband.minimum_dr_down", FT_UINT64, BASE_DEC, NULL, 0x0, "Minimum Data Rate Downstream in bits per seconds", HFILL }}, { &hf_l2tp_broadband_attainable_dr_up, { "Attainable Data Rate Upstream", "l2tp.broadband.attainable_dr_up", FT_UINT64, BASE_DEC, NULL, 0x0, "Attainable Data Rate Upstream in bits per seconds", HFILL }}, { &hf_l2tp_broadband_attainable_dr_down, { "Attainable Data Rate Downstream", "l2tp.broadband.attainable_dr_down", FT_UINT64, BASE_DEC, NULL, 0x0, "Attainable Data Rate Downstream in bits per seconds", HFILL }}, { &hf_l2tp_broadband_maximum_dr_up, { "Maximum Data Rate Upstream", "l2tp.broadband.maximum_dr_up", FT_UINT64, BASE_DEC, NULL, 0x0, "Maximum Data Rate Upstream in bits per seconds", HFILL }}, { &hf_l2tp_broadband_maximum_dr_down, { "Maximum Data Rate Downstream", "l2tp.broadband.maximum_dr_down", FT_UINT64, BASE_DEC, NULL, 0x0, "Maximum Data Rate Downstream in bits per seconds", HFILL }}, { &hf_l2tp_broadband_minimum_dr_up_low_power, { "Minimum Data Rate Upstream Low-Power", "l2tp.broadband.minimum_dr_up_low_power", FT_UINT64, BASE_DEC, NULL, 0x0, "Minimum Data Rate Upstream Low-Power in bits per seconds", HFILL }}, { &hf_l2tp_broadband_minimum_dr_down_low_power, { "Minimum Data Rate Downstream Low-Power", "l2tp.broadband.minimum_dr_down_low_power", FT_UINT64, BASE_DEC, NULL, 0x0, "Minimum Data Rate Downstream Low-Power in bits per seconds", HFILL }}, { &hf_l2tp_broadband_maximum_interleaving_delay_up, { "Maximum Interleaving Dalay Upstream", "l2tp.broadband.maximum_interleaving_delay_up", FT_UINT32, BASE_DEC, NULL, 0x0, "Maximum Interleaving Dalay Upstream in ms", HFILL }}, { &hf_l2tp_broadband_actual_interleaving_delay_up, { "Actual Interleaving Dalay Upstream", "l2tp.broadband.actual_interleaving_delay_up", FT_UINT32, BASE_DEC, NULL, 0x0, "Actual Interleaving Dalay Upstream in ms", HFILL }}, { &hf_l2tp_broadband_maximum_interleaving_delay_down, { "Maximum Interleaving Dalay Downstream", "l2tp.broadband.maximum_interleaving_delay_down", FT_UINT32, BASE_DEC, NULL, 0x0, "Maximum Interleaving Dalay Downstream in ms", HFILL }}, { &hf_l2tp_broadband_actual_interleaving_delay_down, { "Actual Interleaving Dalay Downstream", "l2tp.broadband.actual_interleaving_delay_down", FT_UINT32, BASE_DEC, NULL, 0x0, "Actual Interleaving Dalay Downstream in ms", HFILL }}, { &hf_l2tp_broadband_access_loop_encapsulation, { "Access Loop Encapsulation", "l2tp.broadband.access_loop_encapsulation", FT_NONE, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_l2tp_broadband_access_loop_encapsulation_data_link, { "Data Link", "l2tp.broadband.access_loop_encapsulation.data_link", FT_UINT8, BASE_HEX, VALS(ale_datalink_types_vals), 0x0, NULL, HFILL }}, { &hf_l2tp_broadband_access_loop_encapsulation_enc1, { "Encaps 1", "l2tp.broadband.access_loop_encapsulation.enc1", FT_UINT8, BASE_HEX, VALS(ale_enc1_types_vals), 0x0, NULL, HFILL }}, { &hf_l2tp_broadband_access_loop_encapsulation_enc2, { "Encaps 2", "l2tp.broadband.access_loop_encapsulation.enc2", FT_UINT8, BASE_HEX, VALS(ale_enc2_types_vals), 0x0, NULL, HFILL }}, { &hf_l2tp_broadband_ancp_access_line_type, { "ANCP Access Line Type", "l2tp.broadband.ancp_access_line_type", FT_UINT32, BASE_HEX, VALS(ancp_types_vals), 0x0, NULL, HFILL }}, { &hf_l2tp_broadband_iwf_session, { "IWF Session", "l2tp.broadband.iwf_session", FT_UINT32, BASE_HEX, VALS(iwf_types_vals), 0x0, NULL, HFILL }}, { &hf_l2tp_avp_csu, { "Connect Speed Update","l2tp.avp.csu", FT_NONE, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_l2tp_avp_csu_res, { "Reserved", "l2tp.avp.csu.res", FT_UINT16, BASE_HEX, NULL, 0x0, NULL, HFILL }}, { &hf_l2tp_avp_csu_remote_session_id_v2, { "Remote Session ID", "l2tp.avp.csu.res", FT_UINT16, BASE_DEC_HEX, NULL, 0x0, NULL, HFILL }}, { &hf_l2tp_avp_csu_current_tx_speed_v2, { "Current TX Connect Speed", "l2tp.avp.csu.current_tx_speed", FT_UINT32, BASE_DEC, NULL, 0x0, "Current TX Connect Speed in bps", HFILL }}, { &hf_l2tp_avp_csu_current_rx_speed_v2, { "Current RX Connect Speed", "l2tp.avp.csu.current_rx_speed", FT_UINT32, BASE_DEC, NULL, 0x0, "Current RX Connect Speed in bps", HFILL }}, { &hf_l2tp_avp_csu_remote_session_id_v3, { "Remote Session ID", "l2tp.avp.csu.res", FT_UINT32, BASE_DEC_HEX, NULL, 0x0, NULL, HFILL }}, { &hf_l2tp_avp_csu_current_tx_speed_v3, { "Current TX Connect Speed", "l2tp.avp.csu.current_tx_speed64", FT_UINT64, BASE_DEC, NULL, 0x0, "Current TX Connect Speed in bps", HFILL }}, { &hf_l2tp_avp_csu_current_rx_speed_v3, { "Current RX Connect Speed", "l2tp.avp.csu.current_rx_speed64", FT_UINT64, BASE_DEC, NULL, 0x0, "Current RX Connect Speed in bps", HFILL }}, { &hf_l2tp_ericsson_msg_type, { "Ericsson Message Type", "l2tp.ericsson.msg_type", FT_UINT16, BASE_DEC, VALS(ericsson_msg_type_vals), 0x0, NULL, HFILL }}, { &hf_l2tp_ericsson_conn_type, { "Connection Type", "l2tp.ericsson.conn_type", FT_UINT8, BASE_DEC, VALS(ericsson_conn_type_vals), 0x0, NULL, HFILL }}, { &hf_l2tp_ericsson_stn_name, { "STN Name", "l2tp.ericsson.stn_name", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_l2tp_ericsson_crc32_enable, { "CRC32 Enabled", "l2tp.ericsson.crc32_enable", FT_BOOLEAN, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_l2tp_ericsson_abis_lower_mode, { "Abis Lower Type", "l2tp.ericsson.abis_lower_mode", FT_UINT8, BASE_DEC, VALS(ericsson_abis_lower_mode_vals), 0x0, NULL, HFILL }}, { &hf_l2tp_ericsson_tc_overl_thresh, { "Overload Threshold in 0.1%", "l2tp.ericsson.overload_thresh", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_l2tp_ericsson_tc_num_groups, { "Number of Transport Config Groups", "l2tp.ericsson.tc_num_groups", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_l2tp_ericsson_tcg_group_id, { "Transport Config Group ID", "l2tp.ericsson.tc_group_id", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_l2tp_ericsson_tcg_num_sapis, { "Number of SAPIs in Transport Group", "l2tp.ericsson.tc_num_sapi", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_l2tp_ericsson_tcg_sapi, { "TCG SAPI", "l2tp.ericsson.tcg_sapi", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_l2tp_ericsson_tcg_ip, { "TCG IP Address", "l2tp.ericsson.tcg_ip", FT_IPv4, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_l2tp_ericsson_tcg_dscp, { "TCG DSCP", "l2tp.ericsson.tcg_dscp", FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL }}, { &hf_l2tp_ericsson_tcg_crc32_enable, { "CRC32 Enabled", "l2tp.ericsson.crc32_en", FT_BOOLEAN, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_l2tp_ericsson_tcg_bundling_tout, { "TCG Bundling Timeout (ms)", "l2tp.ericsson.gcg.bundle_tout", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_l2tp_ericsson_tcg_bundling_max_pkt, { "TCG Bundling Max Packet Size", "l2tp.ericsson.tcg.bundle_max_pkt", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_l2tp_ericsson_tc_num_maps, { "Number of TEI-SC Maps", "l2tp.ericsson.num_maps", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_l2tp_ericsson_map_tei_low, { "TEI Range Lowest Value", "l2tp.ericsson.map_tei_low", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_l2tp_ericsson_map_tei_high, { "TEI Range Highest Value", "l2tp.ericsson.map_tei_high", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_l2tp_ericsson_map_sc, { "Super Channel", "l2tp.ericsson.map_ssc", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_l2tp_ericsson_ver_pref, { "Preferred/Chosen Version", "l2tp.ericsson.ver_pref", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_l2tp_ericsson_ver_2, { "Version (2)", "l2tp.ericsson.ver_2", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_l2tp_ericsson_ver_3, { "Version (3)", "l2tp.ericsson.ver_3", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }}, /* Generated from convert_proto_tree_add_text.pl */ { &hf_l2tp_cisco_assigned_control_connection_id, { "Assigned Control Connection ID", "l2tp.cisco.assigned_control_connection_id", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_l2tp_cisco_pw_type, { "PW Type", "l2tp.cisco.pw_type", FT_UINT16, BASE_DEC, VALS(pw_types_vals), 0x0, NULL, HFILL }}, { &hf_l2tp_cisco_local_session_id, { "Local Session ID", "l2tp.cisco.local_session_id", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_l2tp_cisco_remote_session_id, { "Remote Session ID", "l2tp.cisco.remote_session_id", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_l2tp_cisco_assigned_cookie, { "Assigned Cookie", "l2tp.cisco.assigned_cookie", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_l2tp_cisco_remote_end_id, { "Remote End ID", "l2tp.cisco.remote_end_id", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_l2tp_cisco_pseudowire_type, { "Pseudowire Type", "l2tp.cisco.pseudowire_type", FT_UINT16, BASE_DEC, VALS(pw_types_vals), 0x0, NULL, HFILL }}, { &hf_l2tp_cisco_circuit_status, { "Circuit Status", "l2tp.cisco.circuit_status", FT_BOOLEAN, 16, TFS(&tfs_up_down), 0x0001, NULL, HFILL }}, { &hf_l2tp_cisco_circuit_type, { "Circuit Type", "l2tp.cisco.circuit_type", FT_BOOLEAN, 16, TFS(&tfs_new_existing), 0x0001, NULL, HFILL }}, { &hf_l2tp_cisco_draft_avp_version, { "Draft AVP Version", "l2tp.cisco.draft_avp_version", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_l2tp_cisco_message_digest, { "Message Digest", "l2tp.cisco.message_digest", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_l2tp_cisco_nonce, { "Nonce", "l2tp.cisco.nonce", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_l2tp_cisco_interface_mtu, { "Interface MTU", "l2tp.cisco.interface_mtu", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_l2tp_stop_ccn_result_code, { "Result code", "l2tp.result_code", FT_UINT16, BASE_DEC, VALS(result_code_stopccn_vals), 0x0, NULL, HFILL }}, { &hf_l2tp_result_code, { "Result code", "l2tp.result_code", FT_UINT16, BASE_DEC|BASE_EXT_STRING, &result_code_cdn_vals_ext, 0x0, NULL, HFILL }}, { &hf_l2tp_avp_error_code, { "Error code", "l2tp.avp.error_code", FT_UINT16, BASE_DEC, VALS(error_code_vals), 0x0, NULL, HFILL }}, { &hf_l2tp_avp_error_message, { "Error Message", "l2tp.avp.error_message", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_l2tp_avp_protocol_version, { "Version", "l2tp.avp.protocol_version", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_l2tp_avp_protocol_revision, { "Revision", "l2tp.avp.protocol_revision", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_l2tp_avp_async_framing_supported, { "Async Framing Supported", "l2tp.avp.async_framing_supported", FT_BOOLEAN, 32, TFS(&tfs_true_false), 0x0002, NULL, HFILL }}, { &hf_l2tp_avp_sync_framing_supported, { "Sync Framing Supported", "l2tp.avp.sync_framing_supported", FT_BOOLEAN, 32, TFS(&tfs_true_false), 0x0001, NULL, HFILL }}, { &hf_l2tp_avp_analog_access_supported, { "Analog Access Supported", "l2tp.avp.analog_access_supported", FT_BOOLEAN, 32, TFS(&tfs_true_false), 0x0002, NULL, HFILL }}, { &hf_l2tp_avp_digital_access_supported, { "Digital Access Supported", "l2tp.avp.digital_access_supported", FT_BOOLEAN, 32, TFS(&tfs_true_false), 0x0001, NULL, HFILL }}, { &hf_l2tp_avp_firmware_revision, { "Firmware Revision", "l2tp.avp.firmware_revision", FT_UINT16, BASE_DEC_HEX, NULL, 0x0, NULL, HFILL }}, { &hf_l2tp_avp_host_name, { "Host Name", "l2tp.avp.host_name", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_l2tp_avp_vendor_name, { "Vendor Name", "l2tp.avp.vendor_name", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_l2tp_avp_receive_window_size, { "Receive Window Size", "l2tp.avp.receive_window_size", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_l2tp_avp_chap_challenge, { "CHAP Challenge", "l2tp.avp.chap_challenge", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_l2tp_avp_cause_code, { "Cause Code", "l2tp.avp.cause_code", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_l2tp_avp_cause_msg, { "Cause Msg", "l2tp.avp.cause_msg", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_l2tp_avp_advisory_msg, { "Advisory Msg", "l2tp.avp.advisory_msg", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_l2tp_avp_chap_challenge_response, { "CHAP Challenge Response", "l2tp.avp.chap_challenge_response", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_l2tp_avp_call_serial_number, { "Call Serial Number", "l2tp.avp.call_serial_number", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_l2tp_avp_minimum_bps, { "Minimum BPS", "l2tp.avp.minimum_bps", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_l2tp_avp_maximum_bps, { "Maximum BPS", "l2tp.avp.maximum_bps", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_l2tp_avp_analog_bearer_type, { "Analog Bearer Type", "l2tp.avp.analog_bearer_type", FT_BOOLEAN, 32, TFS(&tfs_true_false), 0x0002, NULL, HFILL }}, { &hf_l2tp_avp_digital_bearer_type, { "Digital Bearer Type", "l2tp.avp.digital_bearer_type", FT_BOOLEAN, 32, TFS(&tfs_true_false), 0x0001, NULL, HFILL }}, { &hf_l2tp_avp_async_framing_type, { "Async Framing Type", "l2tp.avp.async_framing_type", FT_BOOLEAN, 32, TFS(&tfs_true_false), 0x0002, NULL, HFILL }}, { &hf_l2tp_avp_sync_framing_type, { "Sync Framing Type", "l2tp.avp.sync_framing_type", FT_BOOLEAN, 32, TFS(&tfs_true_false), 0x0001, NULL, HFILL }}, { &hf_l2tp_avp_sub_address, { "Sub-Address", "l2tp.avp.sub_address", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_l2tp_avp_connect_speed, { "Connect Speed", "l2tp.avp.connect_speed", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_l2tp_avp_physical_channel, { "Physical Channel", "l2tp.avp.physical_channel", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_l2tp_avp_initial_received_lcp_confreq, { "Initial Received LCP CONFREQ", "l2tp.avp.initial_received_lcp_confreq", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_l2tp_avp_last_sent_lcp_confreq, { "Last Sent LCP CONFREQ", "l2tp.avp.last_sent_lcp_confreq", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_l2tp_avp_last_received_lcp_confreq, { "Last Received LCP CONFREQ", "l2tp.avp.last_received_lcp_confreq", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_l2tp_avp_proxy_authen_type, { "Proxy Authen Type", "l2tp.avp.proxy_authen_type", FT_UINT16, BASE_DEC, VALS(authen_type_vals), 0x0, NULL, HFILL }}, { &hf_l2tp_avp_proxy_authen_name, { "Proxy Authen Name", "l2tp.avp.proxy_authen_name", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_l2tp_avp_proxy_authen_challenge, { "Proxy Authen Challenge", "l2tp.avp.proxy_authen_challenge", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_l2tp_avp_proxy_authen_id, { "Proxy Authen ID", "l2tp.avp.proxy_authen_id", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_l2tp_avp_proxy_authen_response, { "Proxy Authen Response", "l2tp.avp.proxy_authen_response", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_l2tp_avp_crc_errors, { "CRC Errors", "l2tp.avp.crc_errors", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_l2tp_avp_framing_errors, { "Framing Errors", "l2tp.avp.framing_errors", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_l2tp_avp_hardware_overruns, { "Hardware Overruns", "l2tp.avp.hardware_overruns", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_l2tp_avp_buffer_overruns, { "Buffer Overruns", "l2tp.avp.buffer_overruns", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_l2tp_avp_time_out_errors, { "Time-out Errors", "l2tp.avp.time_out_errors", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_l2tp_avp_alignment_errors, { "Alignment Errors", "l2tp.avp.alignment_errors", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_l2tp_avp_send_accm, { "Send ACCM", "l2tp.avp.send_accm", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_l2tp_avp_receive_accm, { "Receive ACCM", "l2tp.avp.receive_accm", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_l2tp_avp_random_vector, { "Random Vector", "l2tp.avp.random_vector", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_l2tp_avp_private_group_id, { "Private Group ID", "l2tp.avp.private_group_id", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_l2tp_avp_rx_connect_speed, { "Rx Connect Speed", "l2tp.avp.rx_connect_speed", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_l2tp_avp_disconnect_code, { "Disconnect Code", "l2tp.avp.disconnect_code", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_l2tp_avp_control_protocol_number, { "Control Protocol Number", "l2tp.avp.control_protocol_number", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_l2tp_avp_cause_code_direction, { "Direction", "l2tp.avp.cause_code_direction", FT_UINT8, BASE_DEC, VALS(cause_code_direction_vals), 0x0, NULL, HFILL }}, { &hf_l2tp_avp_cause_code_message, { "Message", "l2tp.avp.cause_code_message", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_l2tp_avp_message_digest, { "Message Digest", "l2tp.avp.message_digest", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_l2tp_avp_router_id, { "Router ID", "l2tp.avp.router_id", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_l2tp_avp_pw_type, { "PW Type", "l2tp.avp.pw_type", FT_UINT16, BASE_DEC, VALS(pw_types_vals), 0x0, NULL, HFILL }}, { &hf_l2tp_avp_assigned_cookie, { "Assigned Cookie", "l2tp.avp.assigned_cookie", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_l2tp_avp_remote_end_id, { "Remote End ID", "l2tp.avp.remote_end_id", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_l2tp_avp_pseudowire_type, { "Pseudowire Type", "l2tp.avp.pseudowire_type", FT_UINT16, BASE_DEC, VALS(pw_types_vals), 0x0, NULL, HFILL }}, { &hf_l2tp_avp_layer2_specific_sublayer, { "Layer2 Specific Sublayer", "l2tp.avp.layer2_specific_sublayer", FT_UINT16, BASE_DEC, VALS(l2_sublayer_vals), 0x0, NULL, HFILL }}, { &hf_l2tp_avp_data_sequencing, { "Data Sequencing", "l2tp.avp.data_sequencing", FT_UINT16, BASE_DEC, VALS(data_sequencing_vals), 0x0, NULL, HFILL }}, { &hf_l2tp_avp_circuit_status, { "Circuit Status", "l2tp.avp.circuit_status", FT_BOOLEAN, 16, TFS(&tfs_up_down), 0x0001, NULL, HFILL }}, { &hf_l2tp_avp_circuit_type, { "Circuit Type", "l2tp.avp.circuit_type", FT_BOOLEAN, 16, TFS(&tfs_new_existing), 0x0002, NULL, HFILL }}, { &hf_l2tp_avp_preferred_language, { "Preferred Language", "l2tp.avp.preferred_language", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_l2tp_avp_nonce, { "Nonce", "l2tp.avp.nonce", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_l2tp_avp_tx_connect_speed_v3, { "Tx Connect Speed v3", "l2tp.avp.tx_connect_speed_v3", FT_UINT64, BASE_HEX|BASE_VAL64_STRING|BASE_SPECIAL_VALS, VALS64(unique_indeterminable_or_no_link), 0x0, NULL, HFILL }}, { &hf_l2tp_avp_rx_connect_speed_v3, { "Rx Connect Speed v3", "l2tp.avp.rx_connect_speed_v3", FT_UINT64, BASE_HEX|BASE_VAL64_STRING|BASE_SPECIAL_VALS, VALS64(unique_indeterminable_or_no_link), 0x0, NULL, HFILL }}, { &hf_l2tp_lapd_info, { "LAPD info", "l2tp.lapd_info", FT_NONE, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_l2tp_session_id, { "Packet Type", "l2tp.session_id", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_l2tp_zero_length_body_message, { "Zero Length Body message", "l2tp.zero_length_body_message", FT_NONE, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_l2tp_offset_padding, { "Offset Padding", "l2tp.offset_padding", FT_NONE, BASE_NONE, NULL, 0x0, NULL, HFILL }}, }; static gint *ett[] = { &ett_l2tp, &ett_l2tp_ctrl, &ett_l2tp_avp, &ett_l2tp_avp_sub, &ett_l2tp_ale_sub, &ett_l2tp_l2_spec, &ett_l2tp_lcp, &ett_l2tp_csu, &ett_l2tp_ericsson_tcg, &ett_l2tp_ericsson_map, }; static ei_register_info ei[] = { { &ei_l2tp_incorrect_digest, { "l2tp.incorrect_digest", PI_CHECKSUM, PI_WARN, "Incorrect Digest", EXPFILL }}, /* Generated from convert_proto_tree_add_text.pl */ { &ei_l2tp_vendor_specific_avp_data, { "l2tp.vendor_specific_avp_data", PI_UNDECODED, PI_WARN, "Vendor-Specific AVP data", EXPFILL }}, { &ei_l2tp_avp_length, { "l2tp.avp_length.bad", PI_MALFORMED, PI_ERROR, "Bad AVP length", EXPFILL }}, }; module_t *l2tp_module; expert_module_t* expert_l2tp; /* Decode As handling */ static build_valid_func l2tp_da_build_value[1] = {l2tp_value}; static decode_as_value_t l2tp_da_values = {l2tp_prompt, 1, l2tp_da_build_value}; static decode_as_t l2tp_da = {"l2tp", "L2TPv3 payload", "l2tp.pw_type", 1, 0, &l2tp_da_values, NULL, NULL, decode_as_default_populate_list, decode_as_default_reset, decode_as_default_change, NULL}; proto_l2tp = proto_register_protocol( "Layer 2 Tunneling Protocol", "L2TP", "l2tp"); proto_register_field_array(proto_l2tp, hf, array_length(hf)); proto_register_subtree_array(ett, array_length(ett)); expert_l2tp = expert_register_protocol(proto_l2tp); expert_register_field_array(expert_l2tp, ei, array_length(ei)); l2tp_vendor_avp_dissector_table = register_dissector_table("l2tp.vendor_avp", "L2TP vendor AVP dissector table", proto_l2tp, FT_UINT32, BASE_DEC); pw_type_table = register_dissector_table("l2tp.pw_type", "L2TPv3 payload type", proto_l2tp, FT_UINT32, BASE_DEC); l2tp_module = prefs_register_protocol(proto_l2tp, NULL); prefs_register_enum_preference(l2tp_module, "cookie_size", "L2TPv3 Cookie Size", "L2TPv3 Cookie Size", &l2tpv3_cookie, l2tpv3_cookies, FALSE); prefs_register_enum_preference(l2tp_module, "l2_specific", "L2TPv3 L2-Specific Sublayer", "L2TPv3 L2-Specific Sublayer", &l2tpv3_l2_specific, l2tpv3_l2_specifics, FALSE); prefs_register_obsolete_preference(l2tp_module, "protocol"); prefs_register_string_preference(l2tp_module,"shared_secret","Shared Secret", "Shared secret used for control message digest authentication", &shared_secret); register_cleanup_routine(l2tp_cleanup); register_decode_as(&l2tp_da); } void proto_reg_handoff_l2tp(void) { dissector_handle_t atm_oam_llc_handle; l2tp_udp_handle = create_dissector_handle(dissect_l2tp_udp, proto_l2tp); dissector_add_uint_with_preference("udp.port", UDP_PORT_L2TP, l2tp_udp_handle); l2tp_ip_handle = create_dissector_handle(dissect_l2tp_ip, proto_l2tp); dissector_add_uint("ip.proto", IP_PROTO_L2TP, l2tp_ip_handle); /* * Get a handle for the PPP-in-HDLC-like-framing dissector. */ ppp_hdlc_handle = find_dissector_add_dependency("ppp_hdlc", proto_l2tp); ppp_lcp_options_handle = find_dissector_add_dependency("ppp_lcp_options", proto_l2tp); /* Register vendor AVP dissector(s)*/ dissector_add_uint("l2tp.vendor_avp", VENDOR_CABLELABS, create_dissector_handle(dissect_l2tp_vnd_cablelabs_avps, proto_l2tp)); /* * Get a handle for the dissectors used in v3. */ atm_oam_handle = find_dissector_add_dependency("atm_oam_cell", proto_l2tp); llc_handle = find_dissector_add_dependency("llc", proto_l2tp); atm_oam_llc_handle = create_dissector_handle( dissect_atm_oam_llc, proto_l2tp ); dissector_add_uint("l2tp.pw_type", L2TPv3_PROTOCOL_AAL5, atm_oam_llc_handle); } /* * Editor modelines - http://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: */