static dissector_handle_t dissector_mpls_psc;
static dissector_handle_t dissector_mplstp_lock;
static dissector_handle_t dissector_mplstp_fm;
+static dissector_handle_t dissector_pw_oam;
static dissector_handle_t dissector_pw_eth_heuristic;
static dissector_handle_t dissector_pw_fr;
static dissector_handle_t dissector_pw_hdlc_nocw_fr;
{ 0x0024, "Protection State Coordination Protocol (PSC)"},
{ 0x0025, "On-Demand CV"},
{ 0x0026, "LI"},
+ { 0x0027, "Pseudo-Wire OAM"},
{ 0x0057, "IPv6 packet" },
{ 0x0058, "Fault OAM"},
{ 0x7FF8, "Reserved for Experimental Use"},
call_dissector(dissector_mplstp_lock, next_tvb, pinfo, tree);
break;
+ case 0x0027: /* KM: MPLSTP PW-OAM, RFC 6478 */
+ call_dissector(dissector_pw_oam, next_tvb, pinfo, tree);
+ break;
+
case 0x0058: /* KM: MPLSTP FM, RFC 6427 */
call_dissector(dissector_mplstp_fm, next_tvb, pinfo, tree);
break;
dissector_mpls_psc = find_dissector("mpls_psc");
dissector_mplstp_lock = find_dissector("mplstp_lock");
dissector_mplstp_fm = find_dissector("mplstp_fm");
+ dissector_pw_oam = find_dissector("pw_oam");
dissector_pw_eth_heuristic = find_dissector("pw_eth_heuristic");
dissector_pw_fr = find_dissector("pw_fr");
dissector_pw_hdlc_nocw_fr = find_dissector("pw_hdlc_nocw_fr");
--- /dev/null
+/* packet-pw-oam.c
+*
+* Routines for Pseudowire Status for static pseudowires : RFC 6478
+*
+* (c) Copyright 2012, Krishnamurthy Mayya <krishnamurthymayya@gmail.com>
+* Nikitha Malgi <nikitha01@gmail.com>
+*
+* Wireshark - Network traffic analyzer
+* By Gerald Combs <gerald@wireshark.org>
+* Copyright 1998 Gerald Combs
+*
+* This program is free software; you can redistribute it and/or
+* modify it under the terms of the GNU General Public License
+* as published by the Free Software Foundation; either version 2
+* of the License, or (at your option) any later version.
+*
+* This program is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+* GNU General Public License for more details.
+*
+* You should have received a copy of the GNU General Public License
+* along with this program; if not, write to the Free Software
+* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+*/
+
+#include "config.h"
+#include <glib.h>
+#include <epan/packet.h>
+#include <packet-ip.h>
+
+/* MPLS-TP FM protocol specific variables */
+static gint proto_pw_oam = -1;
+static gint ett_pw_oam = -1;
+static gint ett_pw_oam_flags = -1;
+static gint ett_pw_oam_tlv_tree = -1;
+
+static int hf_pw_oam_tlv_reserved = -1;
+static int hf_pw_oam_tlv_type = -1;
+static int hf_pw_oam_total_tlv_len = -1;
+static int hf_pw_oam_code = -1;
+static int hf_pw_oam_flags = -1;
+static int hf_pw_oam_flags_a = -1;
+static int hf_pw_oam_refresh_timer = -1;
+static int hf_pw_oam_tlv_len = -1;
+
+static const value_string pw_oam_code[] = {
+ {0x00000002, "Local Attachment Circuit(ingress) Receive Fault"},
+ {0x00000004, "Local Attachment Circuit(egress) Transmit Fault"},
+ {0x00000020, "PW Forwarding Standby"},
+ {0x00000040, "Request Switchover to this PW"},
+ {0, NULL}
+};
+
+/* PW-Status TLV dissector */
+void
+dissect_pw_status_tlv (tvbuff_t *tvb, proto_tree *tree, gint offset)
+{
+ proto_item *ti = NULL;
+ proto_tree *pw_oam_tlv_tree = NULL;
+
+ guint reserved = 0;
+
+ ti = proto_tree_add_protocol_format (tree, proto_pw_oam, tvb, offset, 8,
+ "Pseudo-Wire Status TLV");
+
+ reserved = (tvb_get_guint8 (tvb, offset) >> 6);
+
+ if (!tree)
+ return;
+
+ pw_oam_tlv_tree = proto_item_add_subtree (ti, ett_pw_oam_tlv_tree);
+
+ proto_tree_add_uint (pw_oam_tlv_tree, hf_pw_oam_tlv_reserved, tvb, offset,
+ 1, reserved);
+ proto_tree_add_item (pw_oam_tlv_tree, hf_pw_oam_tlv_type, tvb, offset,
+ 2, ENC_BIG_ENDIAN);
+ offset = offset + 2;
+
+ proto_tree_add_item (pw_oam_tlv_tree, hf_pw_oam_tlv_len, tvb, offset,
+ 2, ENC_BIG_ENDIAN);
+ offset = offset + 2;
+ proto_tree_add_item (pw_oam_tlv_tree, hf_pw_oam_code, tvb, offset,
+ 4, ENC_BIG_ENDIAN);
+ offset = offset + 4;
+
+ return ;
+}
+
+/* Dissector for PW OAM protocol: RFC 6478 */
+static void
+dissect_pw_oam(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
+{
+ proto_item *ti = NULL, *ti_flags = NULL;
+ proto_tree *pw_oam_tree = NULL, *pw_oam_flags = NULL;
+
+ guint8 offset = 0;
+ guint16 pw_tlv_type = 0;
+
+ col_set_str(pinfo->cinfo, COL_PROTOCOL, "PW OAM");
+ col_clear(pinfo->cinfo, COL_INFO);
+
+ if (!tree)
+ return;
+
+ ti = proto_tree_add_item(tree, proto_pw_oam, tvb, 0, -1, ENC_NA);
+
+ pw_oam_tree = proto_item_add_subtree (ti, ett_pw_oam);
+
+ /* Refresh-Timer field */
+ proto_tree_add_item (pw_oam_tree, hf_pw_oam_refresh_timer, tvb, offset,
+ 2, ENC_BIG_ENDIAN);
+ offset = offset + 2;
+
+ /* Total-TLV length */
+ proto_tree_add_item (pw_oam_tree, hf_pw_oam_total_tlv_len, tvb, offset,
+ 1, ENC_BIG_ENDIAN);
+ offset = offset + 1;
+
+ /* Flags field */
+ ti_flags = proto_tree_add_item (pw_oam_tree, hf_pw_oam_flags, tvb,
+ offset, 1, ENC_BIG_ENDIAN);
+ pw_oam_flags = proto_item_add_subtree(ti_flags, ett_pw_oam_flags);
+ proto_tree_add_item (pw_oam_flags, hf_pw_oam_flags_a, tvb, offset, 1, FALSE);
+
+ offset = offset + 1;
+ pw_tlv_type = tvb_get_ntohs (tvb, offset);
+
+ /* TLVs */
+ switch (pw_tlv_type)
+ {
+ /* The switch cases below have to be based on the LDP-name space.
+ http://www.iana.org/assignments/ldp-namespaces/ldp-namespaces.xml */
+
+ case 0x096A: /* PW-Status TLV */
+ dissect_pw_status_tlv (tvb, tree, offset);
+ break;
+
+ default:
+ break;
+ }
+
+ return;
+}
+
+void
+proto_register_pw_oam(void)
+{
+ static hf_register_info hf[] = {
+
+ {&hf_pw_oam_refresh_timer,
+ {"Refresh-Timer", "pw_oam.refresh-timer", FT_UINT16,
+ BASE_HEX, NULL, 0x0, NULL, HFILL }},
+
+ {&hf_pw_oam_total_tlv_len,
+ {"TLV Length", "pw_oam.total-tlv-len", FT_UINT8,
+ BASE_HEX, NULL, 0x0, NULL, HFILL }},
+
+ {&hf_pw_oam_flags,
+ {"Flags", "pw_oam.flags", FT_UINT8,
+ BASE_HEX, NULL, 0x0000, "Flags", HFILL }},
+
+ {&hf_pw_oam_flags_a,
+ {"Acknowledgement", "pw_oam.flags_a",
+ FT_BOOLEAN, 8, NULL, 0x0080, "ACK bit", HFILL}
+ },
+
+ {&hf_pw_oam_tlv_reserved,
+ {"Reserved", "pw_oam.tlv-reserved",
+ FT_UINT8, BASE_HEX, NULL, 0x0000, NULL, HFILL}
+ },
+
+ {&hf_pw_oam_tlv_type,
+ {"TLV Type", "pw_oam.tlv-type",
+ FT_UINT16, BASE_HEX, NULL, 0x00, NULL, HFILL}
+ },
+
+ {&hf_pw_oam_tlv_len,
+ {"TLV Length ", "pw_oam.tlv-len",
+ FT_UINT16, BASE_HEX, NULL, 0x00, NULL, HFILL}
+ },
+
+ {&hf_pw_oam_code,
+ {"Status code", "pw_oam.code", FT_UINT16,
+ BASE_HEX, VALS(pw_oam_code), 0x0, "PW Status Code", HFILL }
+ },
+
+ };
+
+ static gint *ett[] = {
+ &ett_pw_oam,
+ &ett_pw_oam_tlv_tree,
+ &ett_pw_oam_flags,
+ };
+
+ proto_pw_oam =
+ proto_register_protocol("Pseudo-Wire OAM", "PW-OAM "
+ "Pseudo-Wire OAM Protocol",
+ "pw_oam");
+
+ proto_register_field_array (proto_pw_oam, hf, array_length(hf));
+ proto_register_subtree_array (ett, array_length(ett));
+
+ register_dissector("pw_oam", dissect_pw_oam, proto_pw_oam);
+}
+
+/*
+ * Editor modelines - http://www.wireshark.org/tools/modelines.html
+ *
+ * Local variables:
+ * c-basic-offset: 2
+ * tab-width: 8
+ * indent-tabs-mode: nil
+ * End:
+ *
+ * vi: set shiftwidth=2 tabstop=8 expandtab:
+ * :indentSize=2:tabSize=8:noTabs=true:
+ */
git.samba.org / metze / wireshark / wip.git / commitdiff