diff options
-rw-r--r-- | AUTHORS | 2 | ||||
-rw-r--r-- | epan/CMakeLists.txt | 1 | ||||
-rw-r--r-- | epan/dissectors/Makefile.common | 1 | ||||
-rw-r--r-- | epan/dissectors/packet-mpls.c | 7 | ||||
-rw-r--r-- | epan/dissectors/packet-pw-oam.c | 218 |
5 files changed, 229 insertions, 0 deletions
@@ -3682,6 +3682,8 @@ Pontus Fuchs <pontus.fuchs[AT]gmail.com> Bill Parker <wp02855[AT]gmail.com> Tomofumi Hayashi <s1061123[AT]gmail.com> Tim Hentenaar <tim.hentenaar[AT]gmail.com> +Krishnamurthy Mayya <krishnamurthymayya[AT]gmail.com> +Nikitha Malgi <nikitha01[AT]gmail.com> Dan Lasley <dlasley[AT]promus.com> gave permission for his dumpit() hex-dump routine to be used. diff --git a/epan/CMakeLists.txt b/epan/CMakeLists.txt index da5b123fda..b76f9b031b 100644 --- a/epan/CMakeLists.txt +++ b/epan/CMakeLists.txt @@ -1009,6 +1009,7 @@ set(DISSECTOR_SRC dissectors/packet-pw-eth.c dissectors/packet-pw-fr.c dissectors/packet-pw-hdlc.c + dissectors/packet-pw-oam.c dissectors/packet-pw-satop.c dissectors/packet-q2931.c dissectors/packet-q708.c diff --git a/epan/dissectors/Makefile.common b/epan/dissectors/Makefile.common index ae34870f47..0b8aff550d 100644 --- a/epan/dissectors/Makefile.common +++ b/epan/dissectors/Makefile.common @@ -929,6 +929,7 @@ DISSECTOR_SRC = \ packet-pw-eth.c \ packet-pw-fr.c \ packet-pw-hdlc.c \ + packet-pw-oam.c \ packet-pw-satop.c \ packet-q2931.c \ packet-q708.c \ diff --git a/epan/dissectors/packet-mpls.c b/epan/dissectors/packet-mpls.c index b2069a8c7b..2a852aa107 100644 --- a/epan/dissectors/packet-mpls.c +++ b/epan/dissectors/packet-mpls.c @@ -102,6 +102,7 @@ static dissector_handle_t dissector_mpls_pm_ilm_dm; 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; @@ -298,6 +299,7 @@ static const value_string mpls_pwac_types[] = { { 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"}, @@ -435,6 +437,10 @@ dissect_pw_ach(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree) 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; @@ -811,6 +817,7 @@ proto_reg_handoff_mpls(void) 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"); diff --git a/epan/dissectors/packet-pw-oam.c b/epan/dissectors/packet-pw-oam.c new file mode 100644 index 0000000000..4c4f521261 --- /dev/null +++ b/epan/dissectors/packet-pw-oam.c @@ -0,0 +1,218 @@ +/* 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: + */ |