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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-10 20:34:10 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-10 20:34:10 +0000
commite4ba6dbc3f1e76890b22773807ea37fe8fa2b1bc (patch)
tree68cb5ef9081156392f1dd62a00c6ccc1451b93df /epan/dissectors/packet-l2tp.c
parentInitial commit. (diff)
downloadwireshark-e4ba6dbc3f1e76890b22773807ea37fe8fa2b1bc.tar.xz
wireshark-e4ba6dbc3f1e76890b22773807ea37fe8fa2b1bc.zip
Adding upstream version 4.2.2.upstream/4.2.2
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'epan/dissectors/packet-l2tp.c')
-rw-r--r--epan/dissectors/packet-l2tp.c3797
1 files changed, 3797 insertions, 0 deletions
diff --git a/epan/dissectors/packet-l2tp.c b/epan/dissectors/packet-l2tp.c
new file mode 100644
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+++ b/epan/dissectors/packet-l2tp.c
@@ -0,0 +1,3797 @@
+/* packet-l2tp.c
+ * Routines for Layer Two Tunnelling Protocol (L2TP) packet disassembly
+ * John Thomes <john@ensemblecom.com>
+ *
+ * Minor changes by: (2000-01-10)
+ * Laurent Cazalet <laurent.cazalet@mailclub.net>
+ * Thomas Parvais <thomas.parvais@advalvas.be>
+ *
+ * Added RFC 5515 by Uli Heilmeier <uh@heilmeier.eu>, 2016-02-29
+ *
+ * Ericsson L2TP by Harald Welte <laforge@gnumonks.org>, 2016-07-16
+ *
+ * Wireshark - Network traffic analyzer
+ * By Gerald Combs <gerald@wireshark.org>
+ * Copyright 1998 Gerald Combs
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+/*
+ * RFC 2661 for L2TPv2
+ * https://tools.ietf.org/html/rfc2661
+ *
+ * RFC 3931 for L2TPv3
+ * https://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
+ * https://tools.ietf.org/html/rfc4591
+ *
+ * RFC 4454 for ATM
+ * https://tools.ietf.org/html/rfc4454
+ *
+ * RFC 4719 for Ethernet
+ * https://tools.ietf.org/html/rfc4719
+ *
+ * RFC 4349 for HDLC
+ * https://tools.ietf.org/html/rfc4349
+ *
+ * XXX - what about LAPD?
+ */
+
+#include "config.h"
+
+#include <epan/packet.h>
+#include <epan/ipproto.h>
+#include <epan/sminmpec.h>
+#include <epan/addr_resolv.h>
+#include <epan/prefs.h>
+#include <epan/conversation.h>
+#include <epan/expert.h>
+#include <epan/decode_as.h>
+#include <epan/proto_data.h>
+
+#include <wsutil/wsgcrypt.h>
+
+#include "packet-l2tp.h"
+
+void proto_register_l2tp(void);
+void proto_reg_handoff_l2tp(void);
+
+static int proto_l2tp = -1;
+static int hf_l2tp_flags = -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_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_flags = -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_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 Protocol 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[] = {
+ { L2TPv3_PW_FR, "Frame Relay DLCI" },
+ { L2TPv3_PW_AAL5, "ATM AAL5 SDU VCC transport" },
+ { L2TPv3_PW_ATM_PORT, "ATM Cell transparent Port Mode" },
+ { L2TPv3_PW_ETH_VLAN, "Ethernet VLAN" },
+ { L2TPv3_PW_ETH, "Ethernet" },
+ { L2TPv3_PW_CHDLC, "HDLC" },
+ { L2TPv3_PW_PPP, "PPP" }, /* Currently unassigned */
+ { L2TPv3_PW_ATM_VCC, "ATM Cell transport VCC Mode" },
+ { L2TPv3_PW_ATM_VPC, "ATM Cell transport VPC Mode" },
+ { L2TPv3_PW_IP, "IP Transport" }, /* Currently unassigned */
+ { L2TPv3_PW_DOCSIS_DMPT, "MPEG-TS Payload Type (MPTPW)" },
+ { L2TPv3_PW_DOCSIS_PSP, "Packet Streaming Protocol (PSPPW)" },
+ /* 0x000E-0x0010 Unassigned */
+ { L2TPv3_PW_E1, "Structure-agnostic E1 circuit" }, /* [RFC5611] */
+ { L2TPv3_PW_T1, "Structure-agnostic T1 (DS1) circuit" }, /* [RFC5611] */
+ { L2TPv3_PW_E3, "Structure-agnostic E3 circuit" }, /* [RFC5611] */
+ { L2TPv3_PW_T3, "Structure-agnostic T3 (DS3) circuit" }, /* [RFC5611] */
+ { L2TPv3_PW_CESOPSN, "CESoPSN basic mode" }, /* [RFC5611] */
+ { 0x0016, "Unassigned" },
+ { L2TPv3_PW_CESOPSN_CAS, "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;
+static dissector_handle_t atm_oam_llc_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;
+
+ guint 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 = L2TPv3_PW_DEFAULT;
+}
+
+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;
+
+ switch (msg_type) {
+ case MESSAGE_TYPE_ICRQ:
+ case MESSAGE_TYPE_OCRQ:
+ break;
+ default:
+ return session;
+ }
+
+ if (session == NULL)
+ session = alloc_session();
+
+ session->pw_type = tvb_get_ntohs(tvb, offset);
+
+ 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 != L2TPv3_PW_DEFAULT)
+ 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)
+{
+ snprintf(result, MAX_DECODE_AS_PROMPT_LEN, "Decode L2TPv3 pseudowire 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, l2tp_cntrl_data_t *l2tp_cntrl_data, l2tpv3_session_t **session) {
+
+ 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 (ccid=%u)", control_msg, l2tp_cntrl_data->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);
+ *session = store_lsession_id(*session, tvb, offset, l2tp_cntrl_data->msg_type);
+ 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);
+ *session = store_rsession_id(*session, tvb, offset, l2tp_cntrl_data->msg_type);
+ break;
+ case CISCO_ASSIGNED_COOKIE:
+ proto_tree_add_item(l2tp_avp_tree, hf_l2tp_cisco_assigned_cookie, tvb, offset, avp_len, ENC_NA);
+ *session = store_cookie_len(*session, avp_len, l2tp_cntrl_data->msg_type);
+ 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);
+ *session = store_pw_type(*session, tvb, offset, l2tp_cntrl_data->msg_type);
+ 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);
+ 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);
+ 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 _U_)
+{
+ 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;
+
+ 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);
+ 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, l2tp_cntrl_data, &session);
+ 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);
+ 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);
+ 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);
+ 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;
+ guint pw_type = L2TPv3_PW_DEFAULT;
+
+ 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 == L2TPv3_PW_DEFAULT)
+ pw_type = session->pw_type;
+ }
+
+ if (l2_spec == -1)
+ l2_spec = L2TPv3_L2_SPECIFIC_NONE;
+
+ if (cookie_len == -1)
+ cookie_len = L2TPv3_COOKIE_DEFAULT;
+
+ col_append_fstr(pinfo->cinfo, COL_INFO, "D[S:0x%08X]", sid);
+ col_set_fence(pinfo->cinfo, COL_INFO);
+
+ proto_tree_add_item(l2tp_tree, hf_l2tp_sid, tvb, idx-4, 4, ENC_BIG_ENDIAN);
+ ti = proto_tree_add_uint(l2tp_tree, hf_l2tp_avp_pseudowire_type, tvb, 0, 0, pw_type);
+ proto_item_set_generated(ti);
+ 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);
+ idx += cookie_len;
+ proto_item_set_len(l2tp_item, idx);
+ }
+
+ switch(l2_spec){
+ case L2TPv3_L2_SPECIFIC_DEFAULT:
+ if (tree) {
+ ti = proto_tree_add_item(l2tp_tree, hf_l2tp_l2_spec_def,
+ tvb, idx, 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,
+ 1, ENC_BIG_ENDIAN);
+ proto_tree_add_item(l2_specific, hf_l2tp_l2_spec_sequence, tvb,
+ idx + 1, 3, ENC_BIG_ENDIAN);
+ }
+ idx += 4;
+ break;
+ case L2TPv3_L2_SPECIFIC_DOCSIS_DMPT:
+ if (tree) {
+ ti = proto_tree_add_item(l2tp_tree, hf_l2tp_l2_spec_docsis_dmpt,
+ tvb, idx, 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, 1, ENC_BIG_ENDIAN);
+
+ proto_tree_add_item(l2_specific, hf_l2tp_l2_spec_s, tvb,
+ idx, 1, ENC_BIG_ENDIAN);
+
+ proto_tree_add_item(l2_specific, hf_l2tp_l2_spec_h, tvb,
+ idx, 1, ENC_BIG_ENDIAN);
+
+ proto_tree_add_item(l2_specific, hf_l2tp_l2_spec_flow_id, tvb,
+ idx, 1, ENC_BIG_ENDIAN);
+
+ proto_tree_add_item(l2_specific, hf_l2tp_l2_spec_sequence, tvb,
+ idx + 2, 2, ENC_BIG_ENDIAN);
+ }
+ idx += 4;
+ break;
+ case L2TPv3_L2_SPECIFIC_ATM:
+ if (tree) {
+ ti = proto_tree_add_item(l2tp_tree, hf_l2tp_l2_spec_atm,
+ tvb, idx, 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,
+ 1, ENC_BIG_ENDIAN);
+ proto_tree_add_item(l2_specific, hf_l2tp_l2_spec_t, tvb, idx,
+ 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) & 0x08;
+ proto_tree_add_item(l2_specific, hf_l2tp_l2_spec_g, tvb, idx,
+ 1, ENC_BIG_ENDIAN);
+ proto_tree_add_item(l2_specific, hf_l2tp_l2_spec_c, tvb, idx,
+ 1, ENC_BIG_ENDIAN);
+ proto_tree_add_item(l2_specific, hf_l2tp_l2_spec_u, tvb, idx,
+ 1, ENC_BIG_ENDIAN);
+ proto_tree_add_item(l2_specific, hf_l2tp_l2_spec_sequence, tvb,
+ idx + 1, 3, ENC_BIG_ENDIAN);
+ }
+ idx += 4;
+ break;
+ case L2TPv3_L2_SPECIFIC_LAPD:
+ if (tree)
+ proto_tree_add_item(l2tp_tree, hf_l2tp_lapd_info, tvb, idx + 4, 3, ENC_NA);
+ idx += 4 + 3;
+ break;
+ case L2TPv3_L2_SPECIFIC_NONE:
+ default:
+ break;
+ }
+
+ next_tvb = tvb_new_subset_remaining(tvb, idx);
+ proto_item_set_len(l2tp_item, idx);
+ p_add_proto_data(pinfo->pool, pinfo, proto_l2tp, 0, GUINT_TO_POINTER(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 int * const 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;
+ proto_item *l2tp_item;
+ int idx = 4; /* skip to sid */
+
+ l2tp_item = proto_tree_add_item(tree, proto_l2tp, tvb, 0, 8, ENC_NA);
+ l2tp_tree = proto_item_add_subtree(l2tp_item, ett_l2tp);
+
+ if (tree) {
+ proto_item_append_text(l2tp_item, " version 3");
+
+ proto_tree_add_bitmask(l2tp_tree, tvb, 0, hf_l2tp_flags, ett_l2tp_flags, 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;
+
+ l2tp_item = proto_tree_add_item(tree, proto_l2tp, tvb, 0, 4, ENC_NA);
+ l2tp_tree = proto_item_add_subtree(l2tp_item, ett_l2tp);
+ proto_item_append_text(l2tp_item, " version 3");
+
+ /* 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;
+ 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 (ccid=0x%08X)",
+ 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 (ccid=0x%08X)",
+ 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 (ccid=0x%08X)",
+ 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);
+ }
+ proto_tree_add_bitmask(l2tp_tree, tvb, baseIdx, hf_l2tp_flags, ett_l2tp_flags, 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 ((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;
+ 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;
+ }
+
+ /* RFCs 2661 and 3931 say that L2TPv2 and v3 use a TFTP-like method
+ * of each side choosing their own port and only using the L2TP port
+ * to establish the connection. In common practice, both parties use
+ * the assigned L2TP port the entire time, due to NAT, firewalls, etc.
+ * We support both methods by using conversations with no second port.
+ */
+ conv = find_conversation(pinfo->num, &pinfo->src, &pinfo->dst, CONVERSATION_UDP,
+ pinfo->srcport, pinfo->destport, NO_PORT_B);
+
+ if (conv == NULL || (conversation_get_dissector(conv, pinfo->num) != l2tp_udp_handle)) {
+ conv = find_conversation(pinfo->num, &pinfo->dst, &pinfo->src, CONVERSATION_UDP,
+ pinfo->destport, pinfo->srcport, NO_PORT_B);
+ }
+
+ if ((conv == NULL) || (conversation_get_dissector(conv, pinfo->num) != l2tp_udp_handle)) {
+ conv = conversation_new(pinfo->num, &pinfo->src, &pinfo->dst, CONVERSATION_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 int * const control_fields[] = {
+ &hf_l2tp_type,
+ &hf_l2tp_length_bit,
+ &hf_l2tp_seq_bit,
+ &hf_l2tp_offset_bit,
+ &hf_l2tp_priority,
+ &hf_l2tp_version,
+ NULL
+ };
+
+ proto_tree_add_bitmask(l2tp_tree, tvb, 0, hf_l2tp_flags, ett_l2tp_flags, 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) {
+ 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_flags,
+ { "Flags", "l2tp.flags", FT_UINT16, BASE_HEX, NULL, 0,
+ NULL, HFILL }},
+
+ { &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_UINT32, 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_HEX, NULL, 0x0,
+ NULL, HFILL }},
+
+ { &hf_l2tp_ccid,
+ { "Control Connection ID","l2tp.ccid", FT_UINT32, BASE_HEX, 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 Delay Upstream", "l2tp.broadband.maximum_interleaving_delay_up", FT_UINT32, BASE_DEC, NULL, 0x0,
+ "Maximum Interleaving Delay Upstream in ms", HFILL }},
+
+ { &hf_l2tp_broadband_actual_interleaving_delay_up,
+ { "Actual Interleaving Delay Upstream", "l2tp.broadband.actual_interleaving_delay_up", FT_UINT32, BASE_DEC, NULL, 0x0,
+ "Actual Interleaving Delay Upstream in ms", HFILL }},
+
+ { &hf_l2tp_broadband_maximum_interleaving_delay_down,
+ { "Maximum Interleaving Delay Downstream", "l2tp.broadband.maximum_interleaving_delay_down", FT_UINT32, BASE_DEC, NULL, 0x0,
+ "Maximum Interleaving Delay Downstream in ms", HFILL }},
+
+ { &hf_l2tp_broadband_actual_interleaving_delay_down,
+ { "Actual Interleaving Delay Downstream", "l2tp.broadband.actual_interleaving_delay_down", FT_UINT32, BASE_DEC, NULL, 0x0,
+ "Actual Interleaving Delay 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.remote_session_id", 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, NULL, 0x00000002, NULL, HFILL }},
+ { &hf_l2tp_avp_sync_framing_supported, { "Sync Framing Supported", "l2tp.avp.sync_framing_supported", FT_BOOLEAN, 32, NULL, 0x00000001, NULL, HFILL }},
+ { &hf_l2tp_avp_analog_access_supported, { "Analog Access Supported", "l2tp.avp.analog_access_supported", FT_BOOLEAN, 32, NULL, 0x00000002, NULL, HFILL }},
+ { &hf_l2tp_avp_digital_access_supported, { "Digital Access Supported", "l2tp.avp.digital_access_supported", FT_BOOLEAN, 32, NULL, 0x00000001, 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, NULL, 0x00000002, NULL, HFILL }},
+ { &hf_l2tp_avp_digital_bearer_type, { "Digital Bearer Type", "l2tp.avp.digital_bearer_type", FT_BOOLEAN, 32, NULL, 0x00000001, NULL, HFILL }},
+ { &hf_l2tp_avp_async_framing_type, { "Async Framing Type", "l2tp.avp.async_framing_type", FT_BOOLEAN, 32, NULL, 0x00000002, NULL, HFILL }},
+ { &hf_l2tp_avp_sync_framing_type, { "Sync Framing Type", "l2tp.avp.sync_framing_type", FT_BOOLEAN, 32, NULL, 0x00000001, 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_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_flags,
+ &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", "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");
+ l2tp_udp_handle = register_dissector("lt2p_udp", dissect_l2tp_udp, proto_l2tp);
+ l2tp_ip_handle = register_dissector("l2tp_ip", dissect_l2tp_ip, proto_l2tp);
+ atm_oam_llc_handle = register_dissector("atm_oam_llc", dissect_atm_oam_llc, proto_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 pseudowire 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_static_text_preference(l2tp_module, "protocol",
+ "Dissection of pseudowire types is configured through \"Decode As\". "
+ "Type 0 is used for sessions with unknown pseudowire type.",
+ "Pseudowire Type \"Decode As\" instructions");
+
+ 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_add_uint_with_preference("udp.port", UDP_PORT_L2TP, l2tp_udp_handle);
+ 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);
+
+ dissector_add_uint("l2tp.pw_type", L2TPv3_PW_AAL5, atm_oam_llc_handle);
+
+ /*
+ * XXX: Should we register something (Ethernet?) to L2TPv3_PW_DEFAULT?
+ * The user could always change it with Decode As.
+ */
+}
+
+/*
+ * Editor modelines - https://www.wireshark.org/tools/modelines.html
+ *
+ * Local variables:
+ * c-basic-offset: 4
+ * tab-width: 8
+ * indent-tabs-mode: nil
+ * End:
+ *
+ * vi: set shiftwidth=4 tabstop=8 expandtab:
+ * :indentSize=4:tabSize=8:noTabs=true:
+ */
generated by cgit v1.2.3 (git 2.39.1) at 2024-10-16 21:22:54 +0000