forked from osmocom/wireshark
952 lines
31 KiB
C
952 lines
31 KiB
C
![]() |
/* packet-ancp.c
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*
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* Dissector for ANCP - Access Node Control Protocol
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*
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* More info on the protocol can be found on IETF:
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* http://tools.ietf.org/wg/ancp/
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* http://tools.ietf.org/html/draft-ietf-ancp-protocol-09
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*
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* Copyright 2010, Aniruddha.A (anira@cisco.com)
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*
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* $Id$
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 1998 Gerald Combs
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <epan/packet.h>
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#include <epan/prefs.h>
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#include <epan/dissectors/packet-tcp.h>
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#include <epan/tap.h>
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#include <epan/stats_tree.h>
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#define ANCP_PORT 6068 /* The ANCP TCP port:draft-ietf-ancp-protocol-09.txt */
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#define ANCP_MIN_HDR 4
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#define ANCP_GSMP_ETHER_TYPE 0x880C
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#define TECH_TYPE_DSL 0x5
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#define ANCP_RESULT_MASK 0xF0
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#define ANCP_CODE_MASK 0x0FFF
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#define ANCP_I_FLAG_MASK 0x80
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#define ANCP_SUBMSG_MASK 0x7FFF
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#define ADJ_CODE_MASK 0x7F /* excluding MSB M-Flag */
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#define ANCP_MTYPE_ADJ 10
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#define ANCP_MTYPE_PORT_MGMT 32
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#define ANCP_MTYPE_PORT_UP 80
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#define ANCP_MTYPE_PORT_DN 81
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/* Topology Discovery Extensions */
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#define TLV_DSL_LINE_ATTRIBUTES 0x04
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#define TLV_DSL_LINE_STATE 0x8F
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#define TLV_DSL_TYPE 0x91
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/* Port Management Extensions */
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#define TLV_PING_PARAMS 0x07
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#define TLV_PING_OPAQUE_DATA 0x08
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#define TLV_PING_RES_STR 0x09
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#define SKIPPADDING(_ofst, _len) \
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do { \
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if ((_len) % 4) \
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_ofst += (4 - ((_len) % 4)); \
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} while(0)
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static int hf_ancp_len = -1;
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static int hf_ancp_ver = -1;
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static int hf_ancp_mtype = -1;
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static int hf_ancp_timer = -1;
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static int hf_ancp_adj_code = -1;
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static int hf_ancp_sender_name = -1;
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static int hf_ancp_receiver_name = -1;
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static int hf_ancp_sender_port = -1;
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static int hf_ancp_receiver_port = -1;
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static int hf_ancp_p_info = -1;
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static int hf_ancp_sender_instance = -1;
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static int hf_ancp_p_id = -1;
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static int hf_ancp_receiver_instance = -1;
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static int hf_ancp_tech_type = -1;
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static int hf_ancp_num_tlvs = -1;
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static int hf_ancp_tot_len = -1;
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static int hf_ancp_cap = -1;
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static int hf_ancp_result = -1;
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static int hf_ancp_code = -1;
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static int hf_ancp_trans_id = -1;
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static int hf_ancp_i_flag = -1;
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static int hf_ancp_submsg_num = -1;
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static int hf_ancp_port = -1;
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static int hf_ancp_port_sess_num = -1;
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static int hf_ancp_evt_seq_num = -1;
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static int hf_ancp_label = -1;
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static int hf_ancp_reserved = -1;
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static int hf_ancp_blk_len = -1;
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static int hf_ancp_num_ext_tlvs = -1;
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static int hf_ancp_ext_tlv_type = -1;
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static int hf_ancp_dsl_line_stlv_type = -1;
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static int hf_ancp_dsl_line_stlv_value = -1;
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static int hf_ancp_ext_tlv_value_str = -1;
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static int hf_ancp_oam_opaque = -1;
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static int hf_ancp_oam_loopb_cnt = -1;
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static int hf_ancp_oam_timeout = -1;
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static gint ett_ancp_len = -1;
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static gint ett_ancp_ver = -1;
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static gint ett_ancp_mtype = -1;
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static gint ett_ancp_timer = -1;
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static gint ett_ancp_adj_code = -1;
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static gint ett_ancp_sender_name = -1;
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static gint ett_ancp_receiver_name = -1;
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static gint ett_ancp_sender_port = -1;
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static gint ett_ancp_receiver_port = -1;
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static gint ett_ancp_p_info = -1;
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static gint ett_ancp_sender_instance = -1;
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static gint ett_ancp_p_id = -1;
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static gint ett_ancp_receiver_instance = -1;
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static gint ett_ancp_tech_type = -1;
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static gint ett_ancp_num_tlvs = -1;
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static gint ett_ancp_tot_len = -1;
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static gint ett_ancp_cap = -1;
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static gint ett_ancp_result = -1;
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static gint ett_ancp_code = -1;
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static gint ett_ancp_trans_id = -1;
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static gint ett_ancp_i_flag = -1;
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static gint ett_ancp_submsg_num = -1;
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static gint ett_ancp_port = -1;
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static gint ett_ancp_port_sess_num= -1;
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static gint ett_ancp_evt_seq_num = -1;
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static gint ett_ancp_label = -1;
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static gint ett_ancp_reserved = -1;
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static gint ett_ancp_blk_len = -1;
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static gint ett_ancp_num_ext_tlvs = -1;
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static gint ett_ancp_ext_tlv_type = -1;
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static gint ett_ancp_dsl_line_stlv_type = -1;
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static gint ett_ancp_dsl_line_stlv_val = -1;
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static gint ett_ancp_ext_tlv_value_str = -1;
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static gint ett_ancp_oam_opaque = -1;
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static gint ett_ancp_oam_loopb_cnt = -1;
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static gint ett_ancp_oam_timeout = -1;
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static int proto_ancp = -1;
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/* ANCP stats - Tap interface */
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static const guint8 *st_str_packets = "Total Packets";
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static const guint8 *st_str_packet_types = "ANCP Packet Types";
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static const guint8 *st_str_adj_pack_types = "ANCP Adjacency Packet Types";
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static int st_node_packets = -1;
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static int st_node_packet_types = -1;
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static int st_node_adj_pack_types = -1;
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static int ancp_tap = -1;
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struct ancp_tap_t {
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gint ancp_mtype;
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gint ancp_adjcode; /* valid for ancp adjacency message only */
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};
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/* Value Strings */
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static const value_string mtype_names[] = {
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{ 10, "Adjacency" },
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{ 32, "Port-Management" },
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{ 80, "Port-Up" },
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{ 81, "Port-Down" },
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{ 0, NULL }
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};
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static const value_string adj_code_names[] = {
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{ 1, "Syn" },
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{ 2, "SynAck" },
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{ 3, "Ack" },
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{ 4, "Rstack" },
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{ 0, NULL }
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};
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static const value_string captype_names[] = {
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{ 1, "Dynamic-Topology-Discovery" },
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{ 2, "Line-Configuration" },
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{ 3, "Transactional-Multicast" },
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{ 4, "OAM" },
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{ 0, NULL }
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};
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static const value_string resulttype_names[] = {
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{ 0, "Ignore" },
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{ 1, "NAck" },
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{ 2, "AckAll" },
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{ 3, "Success" },
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{ 4, "Failure" },
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{ 0, NULL }
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};
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static const value_string codetype_names[] = { /* For now, these are OAM codes*/
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{ 0x500, "Access-line-doesn't-exist" },
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{ 0x501, "Loopback-Test-Timeout" },
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{ 0x502, "Reserved" },
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{ 0x503, "DSL-line-status-showtime" },
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{ 0x504, "DSL-line-status-idle" },
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{ 0x505, "DSL-line-status-silent" },
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{ 0x506, "DSL-line-status-training" },
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{ 0x507, "DSL-line-integrity-error" },
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{ 0x508, "DSLAM resource-unavailable" },
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{ 0x509, "Invalid Test Parameter" },
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{ 0, NULL }
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};
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static const value_string techtype_str[] = {
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{ 0x01, "PON" },
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{ 0x05, "DSL" },
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{ 0, NULL }
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};
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static const value_string dsl_line_attrs[] = {
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{ 0x91, "DSL-Type" },
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{ 0x81, "Actual-Net-Data-Upstream" },
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{ 0x82, "Actual-Net-Data-Rate-Downstream" },
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{ 0x83, "Minimum-Net-Data-Rate-Upstream" },
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{ 0x84, "Minimum-Net-Data-Rate-Downstream" },
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{ 0x85, "Attainable-Net-Data-Rate-Upstream" },
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{ 0x86, "Attainable-Net-Data-Rate-Downstream" },
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{ 0x87, "Maximum-Net-Data-Rate-Upstream" },
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{ 0x88, "Maximum-Net-Data-Rate-Downstream" },
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{ 0x89, "Minimum-Net-Low-Power-Data-Rate-Upstream" },
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{ 0x8A, "Minimum-Net-Low-Power-Data-Rate-Downstream" },
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{ 0x8B, "Maximum-Interleaving-Delay-Upstream" },
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{ 0x8C, "Actual-Interleaving-Delay-Upstream" },
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{ 0x8D, "Maximum-Interleaving-Delay-Downstream" },
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{ 0x8E, "Actual-Interleaving-Delay-Downstream" },
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{ 0x8F, "DSL line state" },
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{ 0x90, "Access Loop Encapsulation" },
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{ 0, NULL }
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};
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static const value_string dsl_line_attr_units[] = {
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{ 0x91, "" },
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{ 0x81, "Kb/sec" },
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{ 0x82, "Kb/sec" },
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{ 0x83, "Kb/sec" },
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{ 0x84, "Kb/sec" },
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{ 0x85, "Kb/sec" },
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{ 0x86, "Kb/sec" },
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{ 0x87, "Kb/sec" },
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{ 0x88, "Kb/sec" },
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{ 0x89, "Kb/sec" },
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{ 0x8A, "Kb/sec" },
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{ 0x8B, "msec" },
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{ 0x8C, "msec" },
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{ 0x8D, "msec" },
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{ 0x8E, "msec" },
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{ 0x8F, "" },
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{ 0x90, "" },
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{ 0, NULL }
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};
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static const value_string dsl_line_type_names[] = {
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{ 1, "ADSL1" },
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{ 2, "ADSL2" },
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{ 3, "ADSL2+" },
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{ 4, "VDSL1" },
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{ 5, "VDSL2" },
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{ 6, "SDSL" },
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{ 0, NULL }
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};
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static const value_string dsl_line_state_names[] = {
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{ 1, "Showtime" },
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{ 2, "Idle" },
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{ 3, "Silent" },
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{ 0, NULL }
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};
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static const value_string ext_tlv_types[] = {
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{ 0x01, "Access-Loop-Circuit-ID" },
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{ 0x02, "Access-Loop-Remote-ID" },
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{ 0x03, "Access-Aggregation-Circuit-ID-ASCII" },
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{ 0x04, "DSL Line Attributes" },
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{ 0x06, "Access-Aggregation-Circuit-ID-Binary" },
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{ 0x07, "OAM-Loopback-Test-Parameters" },
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{ 0x08, "Opaque-Data" },
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{ 0x09, "OAM-Loopback-Test-Response-String" },
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{ 0, NULL }
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};
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static void
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dissect_ancp_port_up_dn_mgmt(tvbuff_t *tvb, proto_tree *ancp_tree, gint offset)
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{
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proto_item *sti = NULL;
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proto_tree *tlv_tree = NULL, *dsl_tree = NULL;
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guint8 tech_type;
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guint16 blk_len, tlen, ttype, stlvtype, stlvlen;
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gint16 num_tlvs, num_stlvs;
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gint val;
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sti = proto_tree_add_item(ancp_tree, hf_ancp_port, tvb, offset, 4,
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FALSE);
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offset += 4;
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sti = proto_tree_add_item(ancp_tree, hf_ancp_port_sess_num, tvb, offset, 4,
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FALSE);
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offset += 4;
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sti = proto_tree_add_item(ancp_tree, hf_ancp_evt_seq_num, tvb, offset, 4,
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FALSE);
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offset += 4;
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proto_tree_add_item(ancp_tree, hf_ancp_label, tvb, offset, 8, FALSE);
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offset += 8;
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/* Start of the Extension Block */
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proto_tree_add_item(ancp_tree, hf_ancp_reserved, tvb, offset, 1, FALSE);
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offset += 1;
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/*
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* We have already displayed the message type in the common header dissect
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* need not display this again here - skip it
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*/
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offset += 1; /* Message type in Ext Blk */
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proto_tree_add_item(ancp_tree, hf_ancp_tech_type, tvb, offset, 1, FALSE);
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tech_type = tvb_get_guint8(tvb, offset);
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offset += 1;
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proto_tree_add_item(ancp_tree, hf_ancp_blk_len, tvb, offset, 1, FALSE);
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offset += 1;
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if (tech_type == TECH_TYPE_DSL) {
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proto_tree_add_item(ancp_tree, hf_ancp_num_ext_tlvs, tvb,
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offset, 2, FALSE);
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num_tlvs = tvb_get_ntohs(tvb, offset);
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offset += 2;
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sti = proto_tree_add_item(ancp_tree, hf_ancp_len, tvb,
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offset, 2, FALSE);
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blk_len = tvb_get_ntohs(tvb, offset);
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proto_item_append_text(sti, " (Extension Block)");
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offset += 2;
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/* Create a TLV sub tree */
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tlv_tree = proto_item_add_subtree(sti, ett_ancp_len);
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for( ;num_tlvs; num_tlvs--) {
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sti = proto_tree_add_item(tlv_tree, hf_ancp_ext_tlv_type, tvb,
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offset, 2, FALSE);
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ttype = tvb_get_ntohs(tvb, offset);
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offset += 2;
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sti = proto_tree_add_item(tlv_tree, hf_ancp_len, tvb,
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offset, 2, FALSE);
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tlen = tvb_get_ntohs(tvb, offset);
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offset += 2;
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/*
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* Extension Block is common for event message and port
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* management message, but the TLVs that can appear
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* are different
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*/
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switch (ttype) {
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case TLV_DSL_LINE_ATTRIBUTES:
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/* Create a DSL Attribute SubTree */
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dsl_tree = proto_item_add_subtree(sti,
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ett_ancp_ext_tlv_type);
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num_stlvs = tlen / 8; /* TODO - better way? */
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for ( ;num_stlvs; num_stlvs--) {
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sti = proto_tree_add_item(dsl_tree,
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hf_ancp_dsl_line_stlv_type, tvb, offset,
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2, FALSE);
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|
stlvtype = tvb_get_ntohs(tvb, offset);
|
||
|
offset += 2;
|
||
|
/* Skip sub-tlv-len display for now */
|
||
|
stlvlen = tvb_get_ntohs(tvb, offset);
|
||
|
offset += 2; /* Sub TLV Length */
|
||
|
|
||
|
sti = proto_tree_add_item(dsl_tree,
|
||
|
hf_ancp_dsl_line_stlv_value, tvb, offset,
|
||
|
stlvlen, FALSE);
|
||
|
val = tvb_get_ntohl(tvb, offset);
|
||
|
offset += stlvlen; /* Except loop-encap, rest are 4B */
|
||
|
|
||
|
switch (stlvtype) {
|
||
|
case TLV_DSL_LINE_STATE:
|
||
|
proto_item_append_text(sti, " (%s)",
|
||
|
val_to_str(val, dsl_line_state_names,
|
||
|
"Unknown (0x%02x)"));
|
||
|
break;
|
||
|
case TLV_DSL_TYPE:
|
||
|
proto_item_append_text(sti, " (%s)",
|
||
|
val_to_str(val, dsl_line_type_names,
|
||
|
"Unknown (0x%02x)"));
|
||
|
break;
|
||
|
|
||
|
default:
|
||
|
/* Add Unit */
|
||
|
proto_item_append_text(sti, " %s",
|
||
|
val_to_str(stlvtype,
|
||
|
dsl_line_attr_units,
|
||
|
"Unknown (0x%02x)"));
|
||
|
break;
|
||
|
}
|
||
|
SKIPPADDING(offset, stlvlen);
|
||
|
}
|
||
|
break;
|
||
|
case TLV_PING_OPAQUE_DATA:
|
||
|
/* 2 32b values*/
|
||
|
proto_tree_add_item(tlv_tree, hf_ancp_oam_opaque,
|
||
|
tvb, offset, 4, FALSE);
|
||
|
offset += 4;
|
||
|
proto_tree_add_item(tlv_tree, hf_ancp_oam_opaque,
|
||
|
tvb, offset, 4, FALSE);
|
||
|
offset += 4;
|
||
|
break;
|
||
|
case TLV_PING_PARAMS:
|
||
|
/* Count (1B) Timeout (1B), 2B empty */
|
||
|
proto_tree_add_item(tlv_tree,
|
||
|
hf_ancp_oam_loopb_cnt, tvb, offset, 1, FALSE);
|
||
|
offset += 1;
|
||
|
proto_tree_add_item(tlv_tree,
|
||
|
hf_ancp_oam_timeout, tvb, offset, 1, FALSE);
|
||
|
offset += 1;
|
||
|
/* Lets not bother about 2B until IETF WG figures out */
|
||
|
break;
|
||
|
default:
|
||
|
/* Assume TLV value is string - covers ALCID, OAM resp */
|
||
|
proto_tree_add_item(tlv_tree, hf_ancp_ext_tlv_value_str,
|
||
|
tvb, offset, tlen, FALSE);
|
||
|
offset += tlen;
|
||
|
SKIPPADDING(offset, tlen);
|
||
|
break;
|
||
|
} /* end switch {ttype} */
|
||
|
} /* end for {numtlvs} */
|
||
|
} /* end if {DSL} */
|
||
|
}
|
||
|
|
||
|
static void
|
||
|
dissect_ancp_adj_msg(tvbuff_t *tvb, packet_info *pinfo, proto_tree *ancp_tree,
|
||
|
gint offset, struct ancp_tap_t *ancp_info
|
||
|
)
|
||
|
{
|
||
|
proto_item *sti = NULL;
|
||
|
proto_tree *ancp_cap_tree = NULL;
|
||
|
guint8 byte, numcaps, adjcode;
|
||
|
guint16 tlv_len;
|
||
|
|
||
|
sti = proto_tree_add_item(ancp_tree, hf_ancp_timer, tvb, offset, 1,
|
||
|
FALSE);
|
||
|
offset += 1;
|
||
|
proto_item_append_text(sti, " msec");
|
||
|
|
||
|
sti = proto_tree_add_item(ancp_tree, hf_ancp_adj_code, tvb, offset, 1,
|
||
|
FALSE);
|
||
|
byte = tvb_get_guint8(tvb, offset);
|
||
|
offset += 1;
|
||
|
adjcode = byte & ADJ_CODE_MASK;
|
||
|
ancp_info->ancp_adjcode = adjcode; /* stats */
|
||
|
proto_item_append_text(sti, " (%s, M Flag %s)",
|
||
|
val_to_str(adjcode, adj_code_names, "Unknown (0x%02x)"),
|
||
|
byte >> 7 ? "Set" : "Unset");
|
||
|
col_append_fstr(pinfo->cinfo, COL_INFO, " (%s)",
|
||
|
val_to_str(adjcode, adj_code_names, "Unknown (0x%02x)"));
|
||
|
|
||
|
proto_tree_add_item(ancp_tree, hf_ancp_sender_name, tvb, offset, 6, FALSE);
|
||
|
offset += 6;
|
||
|
|
||
|
proto_tree_add_item(ancp_tree, hf_ancp_receiver_name, tvb,offset, 6, FALSE);
|
||
|
offset += 6;
|
||
|
|
||
|
proto_tree_add_item(ancp_tree, hf_ancp_sender_port, tvb, offset, 4, FALSE);
|
||
|
offset += 4;
|
||
|
|
||
|
proto_tree_add_item(ancp_tree, hf_ancp_receiver_port, tvb,offset, 4, FALSE);
|
||
|
offset += 4;
|
||
|
|
||
|
sti = proto_tree_add_item(ancp_tree, hf_ancp_p_info, tvb,
|
||
|
offset, 1, FALSE);
|
||
|
byte = tvb_get_guint8(tvb, offset);
|
||
|
offset += 1;
|
||
|
proto_item_append_text(sti, " (Type = %d, Flag = %d)",
|
||
|
byte >> 4, byte & 0x0F);
|
||
|
|
||
|
proto_tree_add_item(ancp_tree, hf_ancp_sender_instance, tvb, offset, 3,
|
||
|
FALSE);
|
||
|
offset += 3;
|
||
|
|
||
|
proto_tree_add_item(ancp_tree, hf_ancp_p_id, tvb, offset, 1, FALSE);
|
||
|
offset += 1;
|
||
|
|
||
|
proto_tree_add_item(ancp_tree, hf_ancp_receiver_instance, tvb, offset, 3,
|
||
|
FALSE);
|
||
|
offset += 3;
|
||
|
|
||
|
proto_tree_add_item(ancp_tree, hf_ancp_tech_type, tvb,
|
||
|
offset, 1, FALSE);
|
||
|
offset += 1;
|
||
|
|
||
|
sti = proto_tree_add_item(ancp_tree, hf_ancp_num_tlvs, tvb, offset, 1,
|
||
|
FALSE);
|
||
|
numcaps = tvb_get_guint8(tvb, offset);
|
||
|
offset += 1;
|
||
|
|
||
|
/* Start the capability subtree */
|
||
|
ancp_cap_tree = proto_item_add_subtree(sti, ett_ancp_tot_len);
|
||
|
|
||
|
sti = proto_tree_add_item(ancp_cap_tree, hf_ancp_tot_len, tvb,
|
||
|
offset, 2, FALSE);
|
||
|
tlv_len = tvb_get_ntohs(tvb, offset);
|
||
|
offset += 2;
|
||
|
|
||
|
for ( ;numcaps; numcaps--) {
|
||
|
sti = proto_tree_add_item(ancp_cap_tree, hf_ancp_cap, tvb,
|
||
|
offset, 2, FALSE);
|
||
|
offset += 2;
|
||
|
|
||
|
tlv_len = tvb_get_ntohs(tvb, offset);
|
||
|
offset += 2;
|
||
|
proto_item_append_text(sti, " (%d bytes)", tlv_len);
|
||
|
/* TODO - if there are non boolean caps, validate before use */
|
||
|
}
|
||
|
}
|
||
|
|
||
|
static void
|
||
|
ancp_stats_tree_init(stats_tree *st)
|
||
|
{
|
||
|
st_node_packets = stats_tree_create_node(st, st_str_packets, 0, TRUE);
|
||
|
st_node_packet_types = stats_tree_create_pivot(st, st_str_packet_types,
|
||
|
st_node_packets);
|
||
|
st_node_adj_pack_types = stats_tree_create_node(st, st_str_adj_pack_types,
|
||
|
st_node_packets, TRUE);
|
||
|
}
|
||
|
|
||
|
static int
|
||
|
ancp_stats_tree_packet(stats_tree* st, packet_info* pinfo _U_,
|
||
|
epan_dissect_t* edt _U_ , const void* p)
|
||
|
{
|
||
|
struct ancp_tap_t *pi = (struct ancp_tap_t *) p;
|
||
|
|
||
|
tick_stat_node(st, st_str_packets, 0, FALSE);
|
||
|
stats_tree_tick_pivot(st, st_node_packet_types,
|
||
|
val_to_str(pi->ancp_mtype, mtype_names,
|
||
|
"Unknown packet type (%d)"));
|
||
|
if (pi->ancp_mtype == ANCP_MTYPE_ADJ)
|
||
|
stats_tree_tick_pivot(st, st_node_adj_pack_types,
|
||
|
val_to_str(pi->ancp_adjcode, adj_code_names,
|
||
|
"Unknown Adjacency packet (%d)"));
|
||
|
return 1;
|
||
|
}
|
||
|
|
||
|
static void
|
||
|
dissect_ancp_message(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
|
||
|
{
|
||
|
gint offset;
|
||
|
guint8 mtype;
|
||
|
struct ancp_tap_t *ancp_info;
|
||
|
|
||
|
offset = 0;
|
||
|
if (tvb_get_ntohs(tvb, offset) != ANCP_GSMP_ETHER_TYPE)
|
||
|
return;
|
||
|
|
||
|
col_set_str(pinfo->cinfo, COL_PROTOCOL, "ANCP");
|
||
|
|
||
|
col_clear(pinfo->cinfo, COL_INFO);
|
||
|
|
||
|
ancp_info = ep_alloc(sizeof(struct ancp_tap_t));
|
||
|
ancp_info->ancp_mtype = 0;
|
||
|
ancp_info->ancp_adjcode = 0;
|
||
|
|
||
|
if (tree || have_tap_listener(ancp_tap)) { /* we are being asked for details */
|
||
|
proto_item *ti = NULL;
|
||
|
proto_item *sti = NULL;
|
||
|
proto_tree *ancp_tree = NULL;
|
||
|
guint8 byte;
|
||
|
guint16 len;
|
||
|
|
||
|
ti = proto_tree_add_item(tree, proto_ancp, tvb, 0, -1, FALSE);
|
||
|
|
||
|
ancp_tree = proto_item_add_subtree(ti, ett_ancp_len);
|
||
|
|
||
|
offset = 2; /* skip ether type */
|
||
|
|
||
|
sti = proto_tree_add_item(ancp_tree, hf_ancp_len, tvb, offset, 2,
|
||
|
FALSE);
|
||
|
len = tvb_get_ntohs(tvb, offset);
|
||
|
offset += 2;
|
||
|
|
||
|
sti = proto_tree_add_item(ancp_tree, hf_ancp_ver, tvb, offset, 1,
|
||
|
FALSE);
|
||
|
byte = tvb_get_guint8(tvb, offset);
|
||
|
offset += 1;
|
||
|
proto_item_append_text(sti, " (%d.%d)", byte >> 4, byte & 0x0F);
|
||
|
|
||
|
sti = proto_tree_add_item(ancp_tree, hf_ancp_mtype, tvb, offset, 1,
|
||
|
FALSE);
|
||
|
mtype = tvb_get_guint8(tvb, offset); /* ANCP message type */
|
||
|
ancp_info->ancp_mtype = mtype; /* stats */
|
||
|
offset += 1;
|
||
|
|
||
|
col_add_fstr(pinfo->cinfo, COL_INFO, "%s Message",
|
||
|
val_to_str(mtype, mtype_names, "Unknown (0x%02x)"));
|
||
|
|
||
|
if (mtype != ANCP_MTYPE_ADJ) {
|
||
|
/* Dissect common header */
|
||
|
proto_tree_add_item(ancp_tree, hf_ancp_result, tvb, offset, 1,
|
||
|
FALSE); /* treat as 1B, but dont change offset */
|
||
|
|
||
|
proto_tree_add_item(ancp_tree, hf_ancp_code, tvb, offset, 2,
|
||
|
FALSE);
|
||
|
offset += 2;
|
||
|
|
||
|
proto_tree_add_item(ancp_tree, hf_ancp_p_id, tvb, offset,
|
||
|
1, FALSE);
|
||
|
offset += 1;
|
||
|
|
||
|
proto_tree_add_item(ancp_tree, hf_ancp_trans_id, tvb,
|
||
|
offset, 3, FALSE);
|
||
|
offset += 3;
|
||
|
|
||
|
proto_tree_add_item(ancp_tree, hf_ancp_i_flag, tvb, offset, 1,
|
||
|
FALSE); /* treat as 1B, but dont change offset */
|
||
|
|
||
|
sti = proto_tree_add_item(ancp_tree, hf_ancp_submsg_num, tvb,
|
||
|
offset, 2, FALSE);
|
||
|
offset += 2;
|
||
|
|
||
|
/*
|
||
|
* Lets not display the 'Length' field now, it is anyway same
|
||
|
* as GSMP Length
|
||
|
* which we have already displayed at the start of the dissect
|
||
|
*/
|
||
|
offset += 2; /* Length */
|
||
|
}
|
||
|
|
||
|
switch(mtype) {
|
||
|
case ANCP_MTYPE_ADJ:
|
||
|
dissect_ancp_adj_msg(tvb, pinfo, ancp_tree, offset, ancp_info);
|
||
|
break;
|
||
|
case ANCP_MTYPE_PORT_DN:
|
||
|
/* FALL THRU */
|
||
|
case ANCP_MTYPE_PORT_MGMT:
|
||
|
/* FALL THRU */
|
||
|
case ANCP_MTYPE_PORT_UP:
|
||
|
dissect_ancp_port_up_dn_mgmt(tvb, ancp_tree, offset);
|
||
|
break;
|
||
|
default:
|
||
|
proto_item_append_text(sti, " (Unknown Message %d)", mtype);
|
||
|
break;
|
||
|
}
|
||
|
}
|
||
|
tap_queue_packet(ancp_tap, pinfo, ancp_info);
|
||
|
}
|
||
|
|
||
|
static guint
|
||
|
get_ancp_msg_len(packet_info *pinfo _U_, tvbuff_t *tvb, int offset)
|
||
|
{
|
||
|
return (guint)tvb_get_ntohs(tvb, offset + 2) + 4; /* 2B len + 4B hdr */
|
||
|
}
|
||
|
|
||
|
static void
|
||
|
dissect_ancp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
|
||
|
{
|
||
|
tcp_dissect_pdus(tvb, pinfo, tree, TRUE, ANCP_MIN_HDR,
|
||
|
get_ancp_msg_len, dissect_ancp_message);
|
||
|
}
|
||
|
|
||
|
void
|
||
|
proto_register_ancp(void)
|
||
|
{
|
||
|
static hf_register_info hf[] = {
|
||
|
{ &hf_ancp_len,
|
||
|
{ "Length", "ancp.len",
|
||
|
FT_UINT16, BASE_DEC,
|
||
|
NULL, 0x0,
|
||
|
NULL, HFILL }
|
||
|
},
|
||
|
{ &hf_ancp_ver,
|
||
|
{ "Version", "ancp.ver",
|
||
|
FT_UINT8, BASE_HEX,
|
||
|
NULL, 0x0,
|
||
|
NULL, HFILL }
|
||
|
},
|
||
|
{ &hf_ancp_mtype,
|
||
|
{ "Message Type", "ancp.mtype",
|
||
|
FT_UINT8, BASE_DEC,
|
||
|
VALS(mtype_names), 0x0,
|
||
|
NULL, HFILL }
|
||
|
},
|
||
|
{ &hf_ancp_timer,
|
||
|
{ "Timer", "ancp.timer",
|
||
|
FT_UINT8, BASE_DEC,
|
||
|
NULL, 0x0,
|
||
|
NULL, HFILL }
|
||
|
},
|
||
|
{ &hf_ancp_adj_code,
|
||
|
{ "Code", "ancp.adjcode", /* this is diff from code */
|
||
|
FT_UINT8, BASE_DEC, /* for Adjacency msg only */
|
||
|
NULL, ADJ_CODE_MASK,
|
||
|
NULL, HFILL }
|
||
|
},
|
||
|
{ &hf_ancp_sender_name,
|
||
|
{ "Sender Name", "ancp.sender_name",
|
||
|
FT_ETHER, BASE_NONE,
|
||
|
NULL, 0x0,
|
||
|
NULL, HFILL }
|
||
|
},
|
||
|
{ &hf_ancp_receiver_name,
|
||
|
{ "Receiver Name", "ancp.receiver_name",
|
||
|
FT_ETHER, BASE_NONE,
|
||
|
NULL, 0x0,
|
||
|
NULL, HFILL }
|
||
|
},
|
||
|
{ &hf_ancp_sender_port,
|
||
|
{ "Sender Port", "ancp.sender_port",
|
||
|
FT_UINT64, BASE_DEC,
|
||
|
NULL, 0x0,
|
||
|
NULL, HFILL }
|
||
|
},
|
||
|
{ &hf_ancp_receiver_port,
|
||
|
{ "Receiver Port", "ancp.receiver_port",
|
||
|
FT_UINT64, BASE_DEC,
|
||
|
NULL, 0x0,
|
||
|
NULL, HFILL }
|
||
|
},
|
||
|
{ &hf_ancp_p_info,
|
||
|
{ "Partition Info", "ancp.partition_info",
|
||
|
FT_UINT8, BASE_HEX,
|
||
|
NULL, 0x0,
|
||
|
NULL, HFILL }
|
||
|
},
|
||
|
{ &hf_ancp_sender_instance,
|
||
|
{ "Sender Instance", "ancp.sender_instance",
|
||
|
FT_UINT24, BASE_DEC,
|
||
|
NULL, 0x0,
|
||
|
NULL, HFILL }
|
||
|
},
|
||
|
{ &hf_ancp_p_id,
|
||
|
{ "Partition ID", "ancp.partition_id",
|
||
|
FT_UINT8, BASE_DEC,
|
||
|
NULL, 0x0,
|
||
|
NULL, HFILL }
|
||
|
},
|
||
|
{ &hf_ancp_receiver_instance,
|
||
|
{ "Receiver Instance", "ancp.receiver_instance",
|
||
|
FT_UINT24, BASE_DEC,
|
||
|
NULL, 0x0,
|
||
|
NULL, HFILL }
|
||
|
},
|
||
|
{ &hf_ancp_tech_type,
|
||
|
{ "Tech Type", "ancp.tech_type",
|
||
|
FT_UINT8, BASE_DEC,
|
||
|
VALS(techtype_str), 0x0,
|
||
|
NULL, HFILL }
|
||
|
},
|
||
|
{ &hf_ancp_num_tlvs,
|
||
|
{ "Num TLVs", "ancp.num_tlvs",
|
||
|
FT_UINT8, BASE_DEC,
|
||
|
NULL, 0x0,
|
||
|
NULL, HFILL }
|
||
|
},
|
||
|
{ &hf_ancp_tot_len,
|
||
|
{ "Length", "ancp.tot_len", /* name just Len to reuse*/
|
||
|
FT_UINT16, BASE_DEC,
|
||
|
NULL, 0x0,
|
||
|
NULL, HFILL }
|
||
|
},
|
||
|
{ &hf_ancp_cap,
|
||
|
{ "Capability", "ancp.capability",
|
||
|
FT_UINT16, BASE_DEC,
|
||
|
VALS(captype_names), 0x0,
|
||
|
NULL, HFILL }
|
||
|
},
|
||
|
{ &hf_ancp_result,
|
||
|
{ "Result", "ancp.result",
|
||
|
FT_UINT8, BASE_DEC,
|
||
|
VALS(resulttype_names), ANCP_RESULT_MASK,
|
||
|
NULL, HFILL }
|
||
|
},
|
||
|
{ &hf_ancp_code,
|
||
|
{ "Code", "ancp.code",
|
||
|
FT_UINT16, BASE_HEX,
|
||
|
VALS(codetype_names), ANCP_CODE_MASK,
|
||
|
NULL, HFILL }
|
||
|
},
|
||
|
{ &hf_ancp_trans_id,
|
||
|
{ "Transaction ID", "ancp.transaction_id",
|
||
|
FT_UINT24, BASE_DEC,
|
||
|
NULL, 0x0,
|
||
|
NULL, HFILL }
|
||
|
},
|
||
|
{ &hf_ancp_i_flag,
|
||
|
{ "I Flag", "ancp.i_flag",
|
||
|
FT_BOOLEAN, 8,
|
||
|
TFS(&tfs_set_notset), ANCP_I_FLAG_MASK,
|
||
|
NULL, HFILL }
|
||
|
},
|
||
|
{ &hf_ancp_submsg_num,
|
||
|
{ "SubMessage Number", "ancp.submessage_number",
|
||
|
FT_UINT16, BASE_DEC,
|
||
|
NULL, ANCP_SUBMSG_MASK,
|
||
|
NULL, HFILL }
|
||
|
},
|
||
|
{ &hf_ancp_port,
|
||
|
{ "Port", "ancp.port",
|
||
|
FT_UINT32, BASE_DEC,
|
||
|
NULL, 0x0,
|
||
|
NULL, HFILL }
|
||
|
},
|
||
|
{ &hf_ancp_port_sess_num,
|
||
|
{ "Port Session Number", "ancp.port_sess_num",
|
||
|
FT_UINT32, BASE_DEC,
|
||
|
NULL, 0x0,
|
||
|
NULL, HFILL }
|
||
|
},
|
||
|
{ &hf_ancp_evt_seq_num,
|
||
|
{ "Event Sequence Number", "ancp.evt_seq_num",
|
||
|
FT_UINT32, BASE_DEC,
|
||
|
NULL, 0x0,
|
||
|
NULL, HFILL }
|
||
|
},
|
||
|
{ &hf_ancp_label,
|
||
|
{ "Label", "ancp.label", /* Not used in proto */
|
||
|
FT_UINT64, BASE_HEX,
|
||
|
NULL, 0x0,
|
||
|
NULL, HFILL }
|
||
|
},
|
||
|
{ &hf_ancp_reserved,
|
||
|
{ "Reserved", "ancp.reserved",
|
||
|
FT_UINT8, BASE_DEC,
|
||
|
NULL, 0x0,
|
||
|
NULL, HFILL }
|
||
|
},
|
||
|
{ &hf_ancp_blk_len,
|
||
|
{ "Block Length", "ancp.blk_len",
|
||
|
FT_UINT8, BASE_DEC,
|
||
|
NULL, 0x0,
|
||
|
NULL, HFILL }
|
||
|
},
|
||
|
{ &hf_ancp_num_ext_tlvs,
|
||
|
{ "Num TLVs", "ancp.ext_tlvs.count",
|
||
|
FT_UINT16, BASE_DEC,
|
||
|
NULL, 0x0,
|
||
|
NULL, HFILL }
|
||
|
},
|
||
|
{ &hf_ancp_ext_tlv_type,
|
||
|
{ "TLV", "ancp.ext_tlv.type",
|
||
|
FT_UINT16, BASE_DEC,
|
||
|
VALS(ext_tlv_types), 0x0,
|
||
|
NULL, HFILL }
|
||
|
},
|
||
|
{ &hf_ancp_dsl_line_stlv_type,
|
||
|
{ "Sub-TLV", "ancp.sub_tlv_type",
|
||
|
FT_UINT16, BASE_HEX,
|
||
|
VALS(dsl_line_attrs), 0x0,
|
||
|
NULL, HFILL }
|
||
|
},
|
||
|
{ &hf_ancp_dsl_line_stlv_value,
|
||
|
{ "Value", "ancp.dsl_line_param",
|
||
|
FT_UINT32, BASE_DEC,
|
||
|
NULL, 0x0,
|
||
|
NULL, HFILL }
|
||
|
},
|
||
|
{ &hf_ancp_ext_tlv_value_str,
|
||
|
{ "Value", "ancp.ext_tlv.value",
|
||
|
FT_STRING, BASE_NONE,
|
||
|
NULL, 0x0,
|
||
|
NULL, HFILL }
|
||
|
},
|
||
|
{ &hf_ancp_oam_opaque,
|
||
|
{ "Opaque", "ancp.oam.opaque", /* There will be 2 such 32b vals */
|
||
|
FT_UINT32, BASE_DEC,
|
||
|
NULL, 0x0,
|
||
|
NULL, HFILL }
|
||
|
},
|
||
|
{ &hf_ancp_oam_loopb_cnt,
|
||
|
{ "OAM Loopback Count", "ancp.oam.loopback_count",
|
||
|
FT_UINT8, BASE_DEC,
|
||
|
NULL, 0x0,
|
||
|
NULL, HFILL }
|
||
|
},
|
||
|
{ &hf_ancp_oam_timeout,
|
||
|
{ "OAM Timeout", "ancp.oam.timeout",
|
||
|
FT_UINT8, BASE_DEC,
|
||
|
NULL, 0x0,
|
||
|
NULL, HFILL }
|
||
|
},
|
||
|
};
|
||
|
|
||
|
/* Setup protocol subtree array */
|
||
|
static gint *ett[] = {
|
||
|
&ett_ancp_len,
|
||
|
&ett_ancp_ver,
|
||
|
&ett_ancp_mtype,
|
||
|
&ett_ancp_timer,
|
||
|
&ett_ancp_adj_code,
|
||
|
&ett_ancp_sender_name,
|
||
|
&ett_ancp_receiver_name,
|
||
|
&ett_ancp_sender_port,
|
||
|
&ett_ancp_receiver_port,
|
||
|
&ett_ancp_p_info,
|
||
|
&ett_ancp_sender_instance,
|
||
|
&ett_ancp_p_id,
|
||
|
&ett_ancp_receiver_instance,
|
||
|
&ett_ancp_tech_type,
|
||
|
&ett_ancp_num_tlvs,
|
||
|
&ett_ancp_tot_len,
|
||
|
&ett_ancp_cap,
|
||
|
&ett_ancp_result,
|
||
|
&ett_ancp_code,
|
||
|
&ett_ancp_trans_id,
|
||
|
&ett_ancp_i_flag,
|
||
|
&ett_ancp_submsg_num,
|
||
|
&ett_ancp_port,
|
||
|
&ett_ancp_port_sess_num,
|
||
|
&ett_ancp_evt_seq_num,
|
||
|
&ett_ancp_label,
|
||
|
&ett_ancp_reserved,
|
||
|
&ett_ancp_blk_len,
|
||
|
&ett_ancp_num_ext_tlvs,
|
||
|
&ett_ancp_ext_tlv_type,
|
||
|
&ett_ancp_dsl_line_stlv_type,
|
||
|
&ett_ancp_dsl_line_stlv_val,
|
||
|
&ett_ancp_ext_tlv_value_str,
|
||
|
&ett_ancp_oam_opaque,
|
||
|
&ett_ancp_oam_loopb_cnt,
|
||
|
&ett_ancp_oam_timeout,
|
||
|
};
|
||
|
|
||
|
proto_ancp = proto_register_protocol (
|
||
|
"Access Node Control Protocol",
|
||
|
"ANCP",
|
||
|
"ancp"
|
||
|
);
|
||
|
|
||
|
proto_register_field_array(proto_ancp, hf, array_length(hf));
|
||
|
proto_register_subtree_array(ett, array_length(ett));
|
||
|
ancp_tap = register_tap("ancp");
|
||
|
}
|
||
|
|
||
|
void
|
||
|
proto_reg_handoff_ancp(void)
|
||
|
{
|
||
|
dissector_handle_t ancp_handle;
|
||
|
|
||
|
ancp_handle = create_dissector_handle(dissect_ancp, proto_ancp);
|
||
|
dissector_add("tcp.port", ANCP_PORT, ancp_handle);
|
||
|
stats_tree_register("ancp", "ancp", "ANCP", 0,
|
||
|
ancp_stats_tree_packet, ancp_stats_tree_init, NULL);
|
||
|
}
|
||
|
|