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wireshark/epan/dissectors/packet-bgp.c

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/* packet-bgp.c
* Routines for BGP packet dissection.
* Copyright 1999, Jun-ichiro itojun Hagino <itojun@itojun.org>
*
* 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.
*/
/* Supports:
* RFC1771 A Border Gateway Protocol 4 (BGP-4)
* RFC1965 Autonomous System Confederations for BGP
* RFC1997 BGP Communities Attribute
* RFC2547 BGP/MPLS VPNs
* RFC2796 BGP Route Reflection An alternative to full mesh IBGP
* RFC2842 Capabilities Advertisement with BGP-4
* RFC2858 Multiprotocol Extensions for BGP-4
* RFC2918 Route Refresh Capability for BGP-4
* RFC3107 Carrying Label Information in BGP-4
* RFC4486 Subcodes for BGP Cease Notification Message
* RFC4724 Graceful Restart Mechanism for BGP
* RFC5512 BGP Encapsulation SAFI and the BGP Tunnel Encapsulation Attribute
* RFC5575 Dissemination of flow specification rules
* RFC5640 Load-Balancing for Mesh Softwires
* RFC6368 Internal BGP as the Provider/Customer Edge Protocol for
BGP/MPLS IP Virtual Private Networks (VPNs)
* RFC6608 Subcodes for BGP Finite State Machine Error
* RFC6793 BGP Support for Four-Octet Autonomous System (AS) Number Space
* RFC5512 The BGP Encapsulation Subsequent Address Family Identifier (SAFI)
* draft-ietf-idr-dynamic-cap
* draft-ietf-idr-bgp-enhanced-route-refresh-02
* draft-ietf-idr-bgp-ext-communities-05
* draft-knoll-idr-qos-attribute-03
* draft-nalawade-kapoor-tunnel-safi-05
* draft-ietf-idr-add-paths-04 Additional-Path for BGP-4
* draft-ietf-l2vpn-evpn-05 BGP MPLS Based Ethernet VPN
* draft-ietf-idr-aigp-18 for BGP
* http://www.iana.org/assignments/bgp-parameters/ (last updated 2012-04-26)
* TODO:
* Destination Preference Attribute for BGP (work in progress)
* RFC1863 A BGP/IDRP Route Server alternative to a full mesh routing
*/
/* (c) Copyright 2015, Pratik Yeole <pyeole@ncsu.edu>
- Fixed incorrect decoding of Network Layer Reachability Information (NLRI) in BGP UPDATE message with add-path support
*/
#include "config.h"
#include <epan/packet.h>
#include <epan/exceptions.h>
#include <epan/addr_and_mask.h>
#include <epan/show_exception.h>
#include <epan/afn.h>
#include <epan/prefs.h>
#include <epan/expert.h>
#include <epan/etypes.h>
#include <epan/to_str.h>
#include <wsutil/str_util.h>
#include "packet-ip.h"
#include "packet-ldp.h"
#include "packet-bgp.h"
void proto_register_bgp(void);
void proto_reg_handoff_bgp(void);
/* #define MAX_STR_LEN 256 */
/* some handy things to know */
#define BGP_MAX_PACKET_SIZE 4096
#define BGP_MARKER_SIZE 16 /* size of BGP marker */
#define BGP_HEADER_SIZE 19 /* size of BGP header, including marker */
#define BGP_MIN_OPEN_MSG_SIZE 29
#define BGP_MIN_UPDATE_MSG_SIZE 23
#define BGP_MIN_NOTIFICATION_MSG_SIZE 21
#define BGP_MIN_KEEPALVE_MSG_SIZE BGP_HEADER_SIZE
#define BGP_TCP_PORT 179
#define BGP_ROUTE_DISTINGUISHER_SIZE 8
/* BGP message types */
#define BGP_OPEN 1
#define BGP_UPDATE 2
#define BGP_NOTIFICATION 3
#define BGP_KEEPALIVE 4
#define BGP_ROUTE_REFRESH 5
#define BGP_CAPABILITY 6
#define BGP_ROUTE_REFRESH_CISCO 0x80
#define BGP_SIZE_OF_PATH_ATTRIBUTE 2
/* attribute flags, from RFC1771 */
#define BGP_ATTR_FLAG_OPTIONAL 0x80
#define BGP_ATTR_FLAG_TRANSITIVE 0x40
#define BGP_ATTR_FLAG_PARTIAL 0x20
#define BGP_ATTR_FLAG_EXTENDED_LENGTH 0x10
/* SSA flags */
#define BGP_SSA_TRANSITIVE 0x8000
#define BGP_SSA_TYPE 0x7FFF
/* SSA Types */
#define BGP_SSA_L2TPv3 1
#define BGP_SSA_mGRE 2
#define BGP_SSA_IPSec 3
#define BGP_SSA_MPLS 4
#define BGP_SSA_L2TPv3_IN_IPSec 5
#define BGP_SSA_mGRE_IN_IPSec 6
/* BGP MPLS information */
#define BGP_MPLS_BOTTOM_L_STACK 0x000001
/* AS_PATH segment types */
#define AS_SET 1 /* RFC1771 */
#define AS_SEQUENCE 2 /* RFC1771 */
#define AS_CONFED_SET 4 /* RFC1965 has the wrong values, corrected in */
#define AS_CONFED_SEQUENCE 3 /* draft-ietf-idr-bgp-confed-rfc1965bis-01.txt */
/* OPEN message Optional Parameter types */
#define BGP_OPTION_AUTHENTICATION 1 /* RFC1771 */
#define BGP_OPTION_CAPABILITY 2 /* RFC2842 */
/* https://www.iana.org/assignments/capability-codes/ (last updated 2015-09-30) */
/* BGP capability code */
#define BGP_CAPABILITY_RESERVED 0 /* RFC2434 */
#define BGP_CAPABILITY_MULTIPROTOCOL 1 /* RFC2858 */
#define BGP_CAPABILITY_ROUTE_REFRESH 2 /* RFC2918 */
#define BGP_CAPABILITY_COOPERATIVE_ROUTE_FILTERING 3 /* RFC5291 */
#define BGP_CAPABILITY_MULTIPLE_ROUTE_DEST 4 /* RFC3107 */
#define BGP_CAPABILITY_EXTENDED_NEXT_HOP 5 /* RFC5549 */
#define BGP_CAPABILITY_EXTENDED_MESSAGE 6 /* draft-ietf-idr-bgp-extended-messages */
#define BGP_CAPABILITY_GRACEFUL_RESTART 64 /* RFC4724 */
#define BGP_CAPABILITY_4_OCTET_AS_NUMBER 65 /* RFC6793 */
#define BGP_CAPABILITY_DYNAMIC_CAPABILITY 67 /* draft-ietf-idr-dynamic-cap */
#define BGP_CAPABILITY_MULTISESSION 68 /* draft-ietf-idr-bgp-multisession */
#define BGP_CAPABILITY_ADDITIONAL_PATHS 69 /* draft-ietf-idr-add-paths */
#define BGP_CAPABILITY_ENHANCED_ROUTE_REFRESH 70 /* [RFC7313] */
#define BGP_CAPABILITY_LONG_LIVED_GRACEFUL_RESTART 71 /* draft-uttaro-idr-bgp-persistence */
#define BGP_CAPABILITY_CP_ORF 72 /* [RFC7543] */
#define BGP_CAPABILITY_FQDN 73 /* draft-walton-bgp-hostname-capability */
#define BGP_CAPABILITY_ROUTE_REFRESH_CISCO 128 /* Cisco */
#define BGP_CAPABILITY_ORF_CISCO 130 /* Cisco */
#define BGP_ORF_PREFIX_CISCO 0x80 /* Cisco */
#define BGP_ORF_COMM_CISCO 0x81 /* Cisco */
#define BGP_ORF_EXTCOMM_CISCO 0x82 /* Cisco */
#define BGP_ORF_ASPATH_CISCO 0x83 /* Cisco */
#define BGP_ORF_COMM 0x02 /* RFC5291 */
#define BGP_ORF_EXTCOMM 0x03 /* RFC5291 */
#define BGP_ORF_ASPATH 0x04 /* draft-ietf-idr-aspath-orf-02.txt */
/* RFC5291 */
#define BGP_ORF_ACTION 0xc0
#define BGP_ORF_ADD 0x00
#define BGP_ORF_REMOVE 0x01
#define BGP_ORF_REMOVEALL 0x02
#define BGP_ORF_MATCH 0x20
#define BGP_ORF_PERMIT 0x00
#define BGP_ORF_DENY 0x01
/* well-known communities, from RFC1997 */
#define BGP_COMM_NO_EXPORT 0xFFFFFF01
#define BGP_COMM_NO_ADVERTISE 0xFFFFFF02
#define BGP_COMM_NO_EXPORT_SUBCONFED 0xFFFFFF03
#define FOURHEX0 0x00000000
#define FOURHEXF 0xFFFF0000
/* attribute types */
#define BGPTYPE_ORIGIN 1 /* RFC1771 */
#define BGPTYPE_AS_PATH 2 /* RFC1771 */
#define BGPTYPE_NEXT_HOP 3 /* RFC1771 */
#define BGPTYPE_MULTI_EXIT_DISC 4 /* RFC1771 */
#define BGPTYPE_LOCAL_PREF 5 /* RFC1771 */
#define BGPTYPE_ATOMIC_AGGREGATE 6 /* RFC1771 */
#define BGPTYPE_AGGREGATOR 7 /* RFC1771 */
#define BGPTYPE_COMMUNITIES 8 /* RFC1997 */
#define BGPTYPE_ORIGINATOR_ID 9 /* RFC2796 */
#define BGPTYPE_CLUSTER_LIST 10 /* RFC2796 */
#define BGPTYPE_DPA 11 /* work in progress */
#define BGPTYPE_ADVERTISER 12 /* RFC1863 */
#define BGPTYPE_RCID_PATH 13 /* RFC1863 */
#define BGPTYPE_MP_REACH_NLRI 14 /* RFC2858 */
#define BGPTYPE_MP_UNREACH_NLRI 15 /* RFC2858 */
#define BGPTYPE_EXTENDED_COMMUNITY 16 /* Draft Ramachandra */
#define BGPTYPE_AS4_PATH 17 /* RFC 6793 */
#define BGPTYPE_AS4_AGGREGATOR 18 /* RFC 6793 */
#define BGPTYPE_SAFI_SPECIFIC_ATTR 19 /* draft-kapoor-nalawade-idr-bgp-ssa-00.txt */
#define BGPTYPE_PMSI_TUNNEL_ATTR 22 /* RFC6514 */
#define BGPTYPE_TUNNEL_ENCAPS_ATTR 23 /* RFC5512 */
#define BGPTYPE_AIGP 26 /* draft-ietf-idr-aigp-18 */
#define BGPTYPE_LINK_STATE_ATTR 29 /* draft-ietf-idr-ls-distribution */
#define BGPTYPE_ATTR_SET 128 /* RFC6368 */
/*EVPN Route Types */
#define EVPN_AD_ROUTE 1
#define EVPN_MAC_ROUTE 2
#define EVPN_INC_MCAST_TREE 3
#define EVPN_ETH_SEGMENT_ROUTE 4
#define EVPN_IP_PREFIX_ROUTE 5 /* draft-rabadan-l2vpn-evpn-prefix-advertisement */
/* NLRI type as define in BGP flow spec RFC */
#define BGPNLRI_FSPEC_DST_PFIX 1 /* RFC 5575 */
#define BGPNLRI_FSPEC_SRC_PFIX 2 /* RFC 5575 */
#define BGPNLRI_FSPEC_IP_PROTO 3 /* RFC 5575 */
#define BGPNLRI_FSPEC_PORT 4 /* RFC 5575 */
#define BGPNLRI_FSPEC_DST_PORT 5 /* RFC 5575 */
#define BGPNLRI_FSPEC_SRC_PORT 6 /* RFC 5575 */
#define BGPNLRI_FSPEC_ICMP_TP 7 /* RFC 5575 */
#define BGPNLRI_FSPEC_ICMP_CD 8 /* RFC 5575 */
#define BGPNLRI_FSPEC_TCP_FLAGS 9 /* RFC 5575 */
#define BGPNLRI_FSPEC_PCK_LEN 10 /* RFC 5575 */
#define BGPNLRI_FSPEC_DSCP 11 /* RFC 5575 */
#define BGPNLRI_FSPEC_FRAGMENT 12 /* RFC 5575 */
/* BGP flow spec NLRI operator bitmask */
#define BGPNLRI_FSPEC_END_OF_LST 0x80
#define BGPNLRI_FSPEC_AND_BIT 0x40
#define BGPNLRI_FSPEC_VAL_LEN 0x30
#define BGPNLRI_FSPEC_UNUSED_BIT4 0x08
#define BGPNLRI_FSPEC_UNUSED_BIT5 0x04
#define BGPNLRI_FSPEC_LESS_THAN 0x04
#define BGPNLRI_FSPEC_GREATER_THAN 0x02
#define BGPNLRI_FSPEC_EQUAL 0x01
#define BGPNLRI_FSPEC_TCPF_NOTBIT 0x02
#define BGPNLRI_FSPEC_TCPF_MATCHBIT 0x01
#define BGPNLRI_FSPEC_DSCP_BITMASK 0x3F
/* BGP flow spec specific filter value: TCP flags, Packet fragment ... */
#define BGPNLRI_FSPEC_TH_FIN 0x01
#define BGPNLRI_FSPEC_TH_SYN 0x02
#define BGPNLRI_FSPEC_TH_RST 0x04
#define BGPNLRI_FSPEC_TH_PUSH 0x08
#define BGPNLRI_FSPEC_TH_ACK 0x10
#define BGPNLRI_FSPEC_TH_URG 0x20
#define BGPNLRI_FSPEC_TH_ECN 0x40
#define BGPNLRI_FSPEC_TH_CWR 0x80
#define BGPNLRI_FSPEC_FG_DF 0x01
#define BGPNLRI_FSPEC_FG_ISF 0x02
#define BGPNLRI_FSPEC_FG_FF 0x04
#define BGPNLRI_FSPEC_FG_LF 0x08
/* Extended community type */
/* according to IANA's number assignment at: http://www.iana.org/assignments/bgp-extended-communities */
/* BGP trasnsitive extended community type high octet */
/* Range 0x00-0x3f First Come First Served */
/* Range 0x80-0x8f Reserved for Experimental */
/* Range 0x90-0xbf Standards Action */
#define BGP_EXT_COM_TYPE_HIGH_TR_AS2 0x00 /* Transitive Two-Octet AS-Specific Extended Community */
#define BGP_EXT_COM_TYPE_HIGH_TR_IP4 0x01 /* Transitive IPv4-Address-specific Extended Community */
#define BGP_EXT_COM_TYPE_HIGH_TR_AS4 0x02 /* Transitive Four-Octet AS-Specific Extended Community */
#define BGP_EXT_COM_TYPE_HIGH_TR_OPAQUE 0x03 /* Transitive Opaque Extended Community */
#define BGP_EXT_COM_TYPE_HIGH_TR_QOS 0x04 /* QoS Marking [Thomas_Martin_Knoll] */
#define BGP_EXT_COM_TYPE_HIGH_TR_COS 0x05 /* CoS Capability [Thomas_Martin_Knoll] */
#define BGP_EXT_COM_TYPE_HIGH_TR_EVPN 0x06 /* EVPN (Sub-Types are defined in the "EVPN Extended Community Sub-Types" registry) */
/* 0x07 Unassigned */
#define BGP_EXT_COM_TYPE_HIGH_TR_FLOW 0x08 /* Flow spec redirect/mirror to IP next-hop [draft-simpson-idr-flowspec-redirect] */
#define BGP_EXT_COM_TYPE_HIGH_TR_EXP 0x80 /* Generic Transitive Experimental Extended Community */
#define BGP_EXT_COM_TYPE_HIGH_TR_EXP_FSIP4 0x81 /* http://tools.ietf.org/html/draft-haas-idr-flowspec-redirect-rt-bis-00 */
#define BGP_EXT_COM_TYPE_HIGH_TR_EXP_FSAS4 0x82 /* http://tools.ietf.org/html/draft-haas-idr-flowspec-redirect-rt-bis-00 */
/* BGP non transitive extended community type high octet */
/* 0x40-0x7f First Come First Served */
/* 0xc0-0xcf Reserved for Experimental Use (see [RFC4360]) */
/* 0xd0-0xff Standards Action */
/* 0x45-0x7f Unassigned */
#define BGP_EXT_COM_TYPE_HIGH_NTR_AS2 0x40 /* Non-Transitive Two-Octet AS-Specific Extended Community */
#define BGP_EXT_COM_TYPE_HIGH_NTR_IP4 0x41 /* Non-Transitive IPv4-Address-specific Extended Community */
#define BGP_EXT_COM_TYPE_HIGH_NTR_AS4 0x42 /* Non-Transitive Four-Octet AS-Specific Extended Community */
#define BGP_EXT_COM_TYPE_HIGH_NTR_OPAQUE 0x43 /* Non-Transitive Opaque Extended Community */
#define BGP_EXT_COM_TYPE_HIGH_NTR_QOS 0x44 /* QoS Marking [Thomas_Martin_Knoll] */
/* EVPN Extended Community Sub-Types */
#define BGP_EXT_COM_STYPE_EPVN_MMAC 0x00 /* MAC Mobility [draft-ietf-l2vpn-pbb-evpn] */
#define BGP_EXT_COM_STYPE_EVPN_LABEL 0x01 /* ESI MPLS Label [draft-ietf-l2vpn-evpn] */
#define BGP_EXT_COM_STYPE_EVPN_IMP 0x02 /* ES Import [draft-sajassi-l2vpn-evpn-segment-route] */
/* RFC 7432 Flag single active mode */
#define BGP_EXT_COM_ESI_LABEL_FLAGS 0x01 /* bitmask: set for single active multi-homing site */
/* EPVN route AD NLRI ESI type */
#define BGP_NLRI_EVPN_ESI_VALUE 0x00 /* ESI type 0, 9 bytes interger */
#define BGP_NLRI_EVPN_ESI_LACP 0x01 /* ESI type 1, LACP 802.1AX */
#define BGP_NLRI_EVPN_ESI_MSTP 0x02 /* ESI type 2, MSTP defined ESI */
#define BGP_NLRI_EVPN_ESI_MAC 0x03 /* ESI type 3, MAC allocated value */
#define BGP_NLRI_EVPN_ESI_RID 0x04 /* ESI type 4, Router ID as ESI */
#define BGP_NLRI_EVPN_ESI_ASN 0x05 /* ESI type 5, ASN as ESI */
#define BGP_NLRI_EVPN_ESI_RES 0xFF /* ESI 0xFF reserved */
/* Transitive Two-Octet AS-Specific Extended Community Sub-Types */
/* 0x04 Unassigned */
/* 0x06-0x07 Unassigned */
/* 0x0b-0x0f Unassigned */
/* 0x11-0xff Unassigned */
#define BGP_EXT_COM_STYPE_AS2_RT 0x02 /* Route Target [RFC4360] */
#define BGP_EXT_COM_STYPE_AS2_RO 0x03 /* Route Origin [RFC4360] */
#define BGP_EXT_COM_STYPE_AS2_OSPF 0x05 /* OSPF Domain Identifier [RFC4577] */
#define BGP_EXT_COM_STYPE_AS2_DCOLL 0x08 /* BGP Data Collection [RFC4384] */
#define BGP_EXT_COM_STYPE_AS2_SRC_AS 0x09 /* Source AS [RFC6514] */
#define BGP_EXT_COM_STYPE_AS2_L2VPN 0x0a /* L2VPN Identifier [RFC6074] */
#define BGP_EXT_COM_STYPE_AS2_CVPND 0x0010 /* Cisco VPN-Distinguisher [Eric_Rosen] */
/* Non-Transitive Two-Octet AS-Specific Extended Community Sub-Types */
/* 0x00-0xbf First Come First Served */
/* 0xc0-0xff IETF Review*/
#define BGP_EXT_COM_STYPE_AS2_LBW 0x04 /* Link Bandwidth Extended Community [draft-ietf-idr-link-bandwidth-00] */
/* Transitive Four-Octet AS-Specific Extended Community Sub-Types */
/* 0x00-0xbf First Come First Served */
/* 0xc0-0xff IETF Review */
#define BGP_EXT_COM_STYPE_AS4_RT 0x02 /* Route Target [RFC5668] */
#define BGP_EXT_COM_STYPE_AS4_RO 0x03 /* Route Origin [RFC5668] */
#define BGP_EXT_COM_STYPE_AS4_GEN 0x04 /* Generic [draft-ietf-idr-as4octet-extcomm-generic-subtype] */
#define BGP_EXT_COM_STYPE_AS4_OSPF 0x05 /* OSPF Domain Identifier [RFC4577] */
#define BGP_EXT_COM_STYPE_AS4_S_AS 0x09 /* Source AS [RFC6514] */
#define BGP_EXT_COM_STYPE_AS4_CIS_V 0x10 /* Cisco VPN Identifier [Eric_Rosen] */
/* Non-Transitive Four-Octet AS-Specific Extended Community Sub-Types */
#define BGP_EXT_COM_STYPE_AS4_GEN 0x04 /* Generic [draft-ietf-idr-as4octet-extcomm-generic-subtype] */
/* Transitive IPv4-Address-Specific Extended Community Sub-Types */
#define BGP_EXT_COM_STYPE_IP4_RT 0x02 /* Route Target [RFC4360] */
#define BGP_EXT_COM_STYPE_IP4_RO 0x03 /* Route Origin [RFC4360] */
#define BGP_EXT_COM_STYPE_IP4_OSPF_D 0x05 /* OSPF Domain Identifier [RFC4577] */
#define BGP_EXT_COM_STYPE_IP4_OSPF_R 0x07 /* OSPF Route ID [RFC4577] */
#define BGP_EXT_COM_STYPE_IP4_L2VPN 0x0a /* L2VPN Identifier [RFC6074] */
#define BGP_EXT_COM_STYPE_IP4_VRF_I 0x0b /* VRF Route Import [RFC6514] */
#define BGP_EXT_COM_STYPE_IP4_CIS_D 0x10 /* Cisco VPN-Distinguisher [Eric_Rosen] */
#define BGP_EXT_COM_STYPE_IP4_SEG_NH 0x12 /* Inter-area P2MP Segmented Next-Hop [draft-ietf-mpls-seamless-mcast] */
/* Transitive Opaque Extended Community Sub-Types */
#define BGP_EXT_COM_STYPE_OPA_OSPF 0x06 /* OSPF Route Type [RFC4577] */
#define BGP_EXT_COM_STYPE_OPA_COLOR 0x0b /* Color Extended Community [RFC5512] */
#define BGP_EXT_COM_STYPE_OPA_ENCAP 0x0c /* Encapsulation Extended Community [RFC5512] */
#define BGP_EXT_COM_STYPE_OPA_DGTW 0x0d /* Default Gateway [Yakov_Rekhter] */
/* BGP Tunnel Encapsulation Attribute Tunnel Types */
#define BGP_EXT_COM_TUNNEL_RESERVED 0 /* Reserved [RFC5512] */
#define BGP_EXT_COM_TUNNEL_L2TPV3 1 /* L2TPv3 over IP [RFC5512] */
#define BGP_EXT_COM_TUNNEL_GRE 2 /* GRE [RFC5512] */
#define BGP_EXT_COM_TUNNEL_ENDP 3 /* Transmit tunnel endpoint [RFC5566] */
#define BGP_EXT_COM_TUNNEL_IPSEC 4 /* IPsec in Tunnel-mode [RFC5566] */
#define BGP_EXT_COM_TUNNEL_IPIPSEC 5 /* IP in IP tunnel with IPsec Transport Mode [RFC5566] */
#define BGP_EXT_COM_TUNNEL_MPLSIP 6 /* MPLS-in-IP tunnel with IPsec Transport Mode [RFC5566] */
#define BGP_EXT_COM_TUNNEL_IPIP 7 /* IP in IP [RFC5512] */
#define BGP_EXT_COM_TUNNEL_VXLAN 8 /* VXLAN Encapsulation [draft-sd-l2vpn-evpn-overlay] */
#define BGP_EXT_COM_TUNNEL_NVGRE 9 /* NVGRE Encapsulation [draft-sd-l2vpn-evpn-overlay] */
#define BGP_EXT_COM_TUNNEL_MPLS 10 /* MPLS Encapsulation [draft-sd-l2vpn-evpn-overlay] */
#define BGP_EXT_COM_TUNNEL_MPLSGRE 11 /* MPLS in GRE Encapsulation [draft-sd-l2vpn-evpn-overlay] */
#define BGP_EXT_COM_TUNNEL_VXLANGPE 12 /* VxLAN GPE Encapsulation [draft-sd-l2vpn-evpn-overlay] */
#define BGP_EXT_COM_TUNNEL_MPLSUDP 13 /* MPLS in UDP Encapsulation [draft-ietf-l3vpn-end-system] */
/* Non-Transitive Opaque Extended Community Sub-Types */
#define BGP_EXT_COM_STYPE_OPA_OR_VAL_ST 0x00 /* BGP Origin Validation State [draft-ietf-sidr-origin-validation-signaling] */
/* BGP Generic Transitive Experimental Use Extended Community Sub-Types */
#define BGP_EXT_COM_STYPE_EXP_F_TR 0x06 /* Flow spec traffic-rate [RFC5575] */
#define BGP_EXT_COM_STYPE_EXP_F_TA 0x07 /* Flow spec traffic-action [RFC5575] */
#define BGP_EXT_COM_STYPE_EXP_F_RED 0x08 /* Flow spec redirect [RFC5575] */
#define BGP_EXT_COM_STYPE_EXP_F_RMARK 0x09 /* Flow spec traffic-remarking [RFC5575] */
#define BGP_EXT_COM_STYPE_EXP_L2 0x0a /* Layer2 Info Extended Community [RFC4761] */
/* BGP Generic Transitive Experimental redirect RT format IPv4:2 bytes Use Extended Community Sub-Types */
#define BGP_EXT_COM_STYPE_EXP_F_RED_IP4 0x08
/* BGP Generic Transitive Experimental redirect RT format AS4:2 bytes Use Extended Community Sub-Types */
#define BGP_EXT_COM_STYPE_EXP_F_RED_AS4 0x08
/* according to IANA's number assignment at: http://www.iana.org/assignments/bgp-extended-communities */
/* draft-ietf-idr-bgp-ext-communities */
#define BGP_EXT_COM_RT_AS2 0x0002 /* Route Target,Format AS(2bytes):AN(4bytes) */
#define BGP_EXT_COM_RT_IP4 0x0102 /* Route Target,Format IP address:AN(2bytes) */
#define BGP_EXT_COM_RT_AS4 0x0202 /* Route Target,Format AS(4bytes):AN(2bytes) */
/* extended community option flow flec action bit S and T */
#define BGP_EXT_COM_FSPEC_ACT_S 0x02
#define BGP_EXT_COM_FSPEC_ACT_T 0x01
/* extended community l2vpn flags */
#define BGP_EXT_COM_L2_FLAG_D 0x80
#define BGP_EXT_COM_L2_FLAG_Z1 0x40
#define BGP_EXT_COM_L2_FLAG_F 0x20
#define BGP_EXT_COM_L2_FLAG_Z345 0x1c
#define BGP_EXT_COM_L2_FLAG_C 0x02
#define BGP_EXT_COM_L2_FLAG_S 0x01
/* Extended community QoS Marking technology type */
#define QOS_TECH_TYPE_DSCP 0x00 /* DiffServ enabled IP (DSCP encoding) */
#define QOS_TECH_TYPE_802_1q 0x01 /* Ethernet using 802.1q priority tag */
#define QOS_TECH_TYPE_E_LSP 0x02 /* MPLS using E-LSP */
#define QOS_TECH_TYPE_VC 0x03 /* Virtual Channel (VC) encoding using separate channels for */
/* QoS forwarding / one channel per class (e.g. ATM VCs, FR */
/* VCs, MPLS L-LSPs) */
#define QOS_TECH_TYPE_GMPLS_TIME 0x04 /* GMPLS - time slot encoding */
#define QOS_TECH_TYPE_GMPLS_LAMBDA 0x05 /* GMPLS - lambda encoding */
#define QOS_TECH_TYPE_GMPLS_FIBRE 0x06 /* GMPLS - fibre encoding */
/* OSPF codes for BGP_EXT_COM_OSPF_RTYPE draft-rosen-vpns-ospf-bgp-mpls */
#define BGP_OSPF_RTYPE_RTR 1 /* OSPF Router LSA */
#define BGP_OSPF_RTYPE_NET 2 /* OSPF Network LSA */
#define BGP_OSPF_RTYPE_SUM 3 /* OSPF Summary LSA */
#define BGP_OSPF_RTYPE_EXT 5 /* OSPF External LSA, note that ASBR doesn't apply to MPLS-VPN */
#define BGP_OSPF_RTYPE_NSSA 7 /* OSPF NSSA External*/
#define BGP_OSPF_RTYPE_SHAM 129 /* OSPF-MPLS-VPN Sham link */
#define BGP_OSPF_RTYPE_METRIC_TYPE 0x1 /* LSB of RTYPE Options Field */
/* Extended community & Route dinstinguisher formats */
#define FORMAT_AS2_LOC 0x00 /* Format AS(2bytes):AN(4bytes) */
#define FORMAT_IP_LOC 0x01 /* Format IP address:AN(2bytes) */
#define FORMAT_AS4_LOC 0x02 /* Format AS(4bytes):AN(2bytes) */
/* RFC 2858 subsequent address family numbers */
#define SAFNUM_UNICAST 1
#define SAFNUM_MULCAST 2
#define SAFNUM_UNIMULC 3
#define SAFNUM_MPLS_LABEL 4 /* rfc3107 */
#define SAFNUM_MCAST_VPN 5 /* draft-ietf-l3vpn-2547bis-mcast-bgp-08.txt */
#define SAFNUM_ENCAPSULATION 7 /* rfc5512 */
#define SAFNUM_TUNNEL 64 /* draft-nalawade-kapoor-tunnel-safi-02.txt */
#define SAFNUM_VPLS 65
#define SAFNUM_MDT 66 /* rfc6037 */
#define SAFNUM_EVPN 70 /* EVPN RFC */
#define SAFNUM_LINK_STATE 71 /* draft-ietf-idr-ls-distribution */
#define SAFNUM_LAB_VPNUNICAST 128 /* Draft-rosen-rfc2547bis-03 */
#define SAFNUM_LAB_VPNMULCAST 129
#define SAFNUM_LAB_VPNUNIMULC 130
#define SAFNUM_ROUTE_TARGET 132 /* RFC 4684 Constrained Route Distribution for BGP/MPLS IP VPN */
#define SAFNUM_FSPEC_RULE 133 /* RFC 5575 BGP flow spec SAFI */
#define SAFNUM_FSPEC_VPN_RULE 134 /* RFC 5575 BGP flow spec SAFI VPN */
/* BGP Additional Paths Capability */
#define BGP_ADDPATH_RECEIVE 0x01
#define BGP_ADDPATH_SEND 0x02
/* mcast-vpn route types draft-ietf-l3vpn-2547bis-mcast-bgp-08.txt */
#define MCAST_VPN_RTYPE_INTRA_AS_IPMSI_AD 1
#define MCAST_VPN_RTYPE_INTER_AS_IPMSI_AD 2
#define MCAST_VPN_RTYPE_SPMSI_AD 3
#define MCAST_VPN_RTYPE_LEAF_AD 4
#define MCAST_VPN_RTYPE_SOURCE_ACTIVE_AD 5
#define MCAST_VPN_RTYPE_SHARED_TREE_JOIN 6
#define MCAST_VPN_RTYPE_SOURCE_TREE_JOIN 7
/* RFC 5512 Tunnel Types */
#define TUNNEL_TYPE_L2TP_OVER_IP 1
#define TUNNEL_TYPE_GRE 2
#define TUNNEL_TYPE_IP_IN_IP 7
/*RFC 6514 PMSI Tunnel Types */
#define PMSI_TUNNEL_NOPRESENT 0
#define PMSI_TUNNEL_RSVPTE_P2MP 1
#define PMSI_TUNNEL_MLDP_P2MP 2
#define PMSI_TUNNEL_PIMSSM 3
#define PMSI_TUNNEL_PIMSM 4
#define PMSI_TUNNEL_BIDIR_PIM 5
#define PMSI_TUNNEL_INGRESS 6
#define PMSI_TUNNEL_MLDP_MP2MP 7
#define PMSI_MLDP_FEC_TYPE_RSVD 0
#define PMSI_MLDP_FEC_TYPE_GEN_LSP 1
#define PMSI_MLDP_FEC_TYPE_EXT_TYPE 255
#define PMSI_MLDP_FEC_ETYPE_RSVD 0
/* draft-ietf-idr-aigp-18 AIGP types */
#define AIGP_TLV_TYPE 1
/* RFC 5512/5640 Sub-TLV Types */
#define TUNNEL_SUBTLV_ENCAPSULATION 1
#define TUNNEL_SUBTLV_PROTO_TYPE 2
#define TUNNEL_SUBTLV_COLOR 4
#define TUNNEL_SUBTLV_LOAD_BALANCE 5
/* Link-State NLRI types */
#define LINK_STATE_NODE_NLRI 1
#define LINK_STATE_LINK_NLRI 2
#define LINK_STATE_IPV4_TOPOLOGY_PREFIX_NLRI 3
#define LINK_STATE_IPV6_TOPOLOGY_PREFIX_NLRI 4
/* Link-State NLRI Protocol-ID values */
#define BGP_LS_NLRI_PROTO_ID_UNKNOWN 0
#define BGP_LS_NLRI_PROTO_ID_IS_IS_LEVEL_1 1
#define BGP_LS_NLRI_PROTO_ID_IS_IS_LEVEL_2 2
#define BGP_LS_NLRI_PROTO_ID_OSPF 3
#define BGP_LS_NLRI_PROTO_ID_DIRECT 4
#define BGP_LS_NLRI_PROTO_ID_STATIC 5
/* Link-State routing universes */
#define BGP_LS_NLRI_ROUTING_UNIVERSE_LEVEL_3 0
#define BGP_LS_NLRI_ROUTING_UNIVERSE_LEVEL_1 1
#define BGP_LS_PREFIX_OSPF_ROUTE_TYPE_UNKNOWN 0
#define BGP_LS_PREFIX_OSPF_ROUTE_TYPE_INTRA_AREA 1
#define BGP_LS_PREFIX_OSPF_ROUTE_TYPE_INTER_AREA 2
#define BGP_LS_PREFIX_OSPF_ROUTE_TYPE_EXTERNAL_1 3
#define BGP_LS_PREFIX_OSPF_ROUTE_TYPE_EXTERNAL_2 4
#define BGP_LS_PREFIX_OSPF_ROUTE_TYPE_NSSA_1 5
#define BGP_LS_PREFIX_OSPF_ROUTE_TYPE_NSSA_2 6
/* draft-ietf-idr-ls-distribution-03 */
#define BGP_NLRI_TLV_LOCAL_NODE_DESCRIPTORS 256
#define BGP_NLRI_TLV_REMOTE_NODE_DESCRIPTORS 257
#define BGP_NLRI_TLV_LINK_LOCAL_REMOTE_IDENTIFIERS 258
#define BGP_NLRI_TLV_IPV4_INTERFACE_ADDRESS 259
#define BGP_NLRI_TLV_IPV4_NEIGHBOR_ADDRESS 260
#define BGP_NLRI_TLV_IPV6_INTERFACE_ADDRESS 261
#define BGP_NLRI_TLV_IPV6_NEIGHBOR_ADDRESS 262
#define BGP_NLRI_TLV_MULTI_TOPOLOGY_ID 263
#define BGP_NLRI_TLV_OSPF_ROUTE_TYPE 264
#define BGP_NLRI_TLV_IP_REACHABILITY_INFORMATION 265
#define BGP_NLRI_TLV_AUTONOMOUS_SYSTEM 512
#define BGP_NLRI_TLV_BGP_LS_IDENTIFIER 513
#define BGP_NLRI_TLV_AREA_ID 514
#define BGP_NLRI_TLV_IGP_ROUTER_ID 515
#define BGP_NLRI_TLV_NODE_FLAG_BITS 1024
#define BGP_NLRI_TLV_OPAQUE_NODE_PROPERTIES 1025
#define BGP_NLRI_TLV_NODE_NAME 1026
#define BGP_NLRI_TLV_IS_IS_AREA_IDENTIFIER 1027
#define BGP_NLRI_TLV_IPV4_ROUTER_ID_OF_LOCAL_NODE 1028
#define BGP_NLRI_TLV_IPV6_ROUTER_ID_OF_LOCAL_NODE 1029
#define BGP_NLRI_TLV_IPV4_ROUTER_ID_OF_REMOTE_NODE 1030
#define BGP_NLRI_TLV_IPV6_ROUTER_ID_OF_REMOTE_NODE 1031
#define BGP_NLRI_TLV_ADMINISTRATIVE_GROUP_COLOR 1088
#define BGP_NLRI_TLV_MAX_LINK_BANDWIDTH 1089
#define BGP_NLRI_TLV_MAX_RESERVABLE_LINK_BANDWIDTH 1090
#define BGP_NLRI_TLV_UNRESERVED_BANDWIDTH 1091
#define BGP_NLRI_TLV_TE_DEFAULT_METRIC 1092
#define BGP_NLRI_TLV_LINK_PROTECTION_TYPE 1093
#define BGP_NLRI_TLV_MPLS_PROTOCOL_MASK 1094
#define BGP_NLRI_TLV_METRIC 1095
#define BGP_NLRI_TLV_SHARED_RISK_LINK_GROUP 1096
#define BGP_NLRI_TLV_OPAQUE_LINK_ATTRIBUTE 1097
#define BGP_NLRI_TLV_LINK_NAME_ATTRIBUTE 1098
#define BGP_NLRI_TLV_IGP_FLAGS 1152
#define BGP_NLRI_TLV_ROUTE_TAG 1153
#define BGP_NLRI_TLV_EXTENDED_TAG 1154
#define BGP_NLRI_TLV_PREFIX_METRIC 1155
#define BGP_NLRI_TLV_OSPF_FORWARDING_ADDRESS 1156
#define BGP_NLRI_TLV_OPAQUE_PREFIX_ATTRIBUTE 1157
/* Link-State NLRI TLV lengths */
#define BGP_NLRI_TLV_LEN_AUTONOMOUS_SYSTEM 4
#define BGP_NLRI_TLV_LEN_BGP_LS_IDENTIFIER 4
#define BGP_NLRI_TLV_LEN_AREA_ID 4
#define BGP_NLRI_TLV_LEN_IPV4_ROUTER_ID 4
#define BGP_NLRI_TLV_LEN_IPV6_ROUTER_ID 16
#define BGP_NLRI_TLV_LEN_IPV4_ROUTER_ID_OF_LOCAL_NODE BGP_NLRI_TLV_LEN_IPV4_ROUTER_ID
#define BGP_NLRI_TLV_LEN_IPV6_ROUTER_ID_OF_LOCAL_NODE BGP_NLRI_TLV_LEN_IPV6_ROUTER_ID
#define BGP_NLRI_TLV_LEN_IPV4_ROUTER_ID_OF_REMOTE_NODE BGP_NLRI_TLV_LEN_IPV4_ROUTER_ID
#define BGP_NLRI_TLV_LEN_IPV6_ROUTER_ID_OF_REMOTE_NODE BGP_NLRI_TLV_LEN_IPV6_ROUTER_ID
#define BGP_NLRI_TLV_LEN_LINK_LOCAL_REMOTE_IDENTIFIERS 8
#define BGP_NLRI_TLV_LEN_IPV4_INTERFACE_ADDRESS 4
#define BGP_NLRI_TLV_LEN_IPV4_NEIGHBOR_ADDRESS 4
#define BGP_NLRI_TLV_LEN_IPV6_INTERFACE_ADDRESS 16
#define BGP_NLRI_TLV_LEN_IPV6_NEIGHBOR_ADDRESS 16
#define BGP_NLRI_TLV_LEN_MULTI_TOPOLOGY_ID 2
#define BGP_NLRI_TLV_LEN_ADMINISTRATIVE_GROUP_COLOR 4
#define BGP_NLRI_TLV_LEN_MAX_LINK_BANDWIDTH 4
#define BGP_NLRI_TLV_LEN_MAX_RESERVABLE_LINK_BANDWIDTH 4
#define BGP_NLRI_TLV_LEN_UNRESERVED_BANDWIDTH 32
#define BGP_NLRI_TLV_LEN_TE_DEFAULT_METRIC 3
#define BGP_NLRI_TLV_LEN_LINK_PROTECTION_TYPE 2
#define BGP_NLRI_TLV_LEN_MPLS_PROTOCOL_MASK 1
#define BGP_NLRI_TLV_LEN_METRIC 3
#define BGP_NLRI_TLV_LEN_IGP_FLAGS 1
#define BGP_NLRI_TLV_LEN_PREFIX_METRIC 4
#define BGP_NLRI_TLV_LEN_AREA_ID 4
#define BGP_NLRI_TLV_LEN_NODE_FLAG_BITS 1
static const value_string bgptypevals[] = {
{ BGP_OPEN, "OPEN Message" },
{ BGP_UPDATE, "UPDATE Message" },
{ BGP_NOTIFICATION, "NOTIFICATION Message" },
{ BGP_KEEPALIVE, "KEEPALIVE Message" },
{ BGP_ROUTE_REFRESH, "ROUTE-REFRESH Message" },
{ BGP_CAPABILITY, "CAPABILITY Message" },
{ BGP_ROUTE_REFRESH_CISCO, "Cisco ROUTE-REFRESH Message" },
{ 0, NULL }
};
static const value_string evpnrtypevals[] = {
{ EVPN_AD_ROUTE, "Ethernet AD Route" },
{ EVPN_MAC_ROUTE, "MAC Advertisement Route" },
{ EVPN_INC_MCAST_TREE, "Inclusive Multicast Route" },
{ EVPN_ETH_SEGMENT_ROUTE, "Ethernet Segment Route" },
{ EVPN_IP_PREFIX_ROUTE, "IP Prefix route"},
{ 0, NULL }
};
static const value_string evpn_nlri_esi_type[] = {
{ BGP_NLRI_EVPN_ESI_VALUE, "ESI 9 bytes value" },
{ BGP_NLRI_EVPN_ESI_LACP, "ESI LACP 802.1AX defined" },
{ BGP_NLRI_EVPN_ESI_MSTP, "ESI mSTP defined" },
{ BGP_NLRI_EVPN_ESI_MAC, "ESI MAC address defined" },
{ BGP_NLRI_EVPN_ESI_RID, "ESI Router ID" },
{ BGP_NLRI_EVPN_ESI_ASN, "ESI autonomous system" },
{ BGP_NLRI_EVPN_ESI_RES, "ESI reserved" },
{ 0, NULL }
};
#define BGP_MAJOR_ERROR_MSG_HDR 1
#define BGP_MAJOR_ERROR_OPEN_MSG 2
#define BGP_MAJOR_ERROR_UPDATE_MSG 3
#define BGP_MAJOR_ERROR_HT_EXPIRED 4
#define BGP_MAJOR_ERROR_STATE_MACHINE 5
#define BGP_MAJOR_ERROR_CEASE 6
#define BGP_MAJOR_ERROR_CAP_MSG 7
static const value_string bgpnotify_major[] = {
{ BGP_MAJOR_ERROR_MSG_HDR, "Message Header Error" },
{ BGP_MAJOR_ERROR_OPEN_MSG, "OPEN Message Error" },
{ BGP_MAJOR_ERROR_UPDATE_MSG, "UPDATE Message Error" },
{ BGP_MAJOR_ERROR_HT_EXPIRED, "Hold Timer Expired" },
{ BGP_MAJOR_ERROR_STATE_MACHINE, "Finite State Machine Error" },
{ BGP_MAJOR_ERROR_CEASE, "Cease" },
{ BGP_MAJOR_ERROR_CAP_MSG, "CAPABILITY Message Error" },
{ 0, NULL }
};
static const value_string bgpnotify_minor_msg_hdr[] = {
{ 1, "Connection Not Synchronized" },
{ 2, "Bad Message Length" },
{ 3, "Bad Message Type" },
{ 0, NULL }
};
static const value_string bgpnotify_minor_open_msg[] = {
{ 1, "Unsupported Version Number" },
{ 2, "Bad Peer AS" },
{ 3, "Bad BGP Identifier" },
{ 4, "Unsupported Optional Parameter" },
{ 5, "Authentication Failure [Deprecated]" },
{ 6, "Unacceptable Hold Time" },
{ 7, "Unsupported Capability" },
{ 0, NULL }
};
static const value_string bgpnotify_minor_update_msg[] = {
{ 1, "Malformed Attribute List" },
{ 2, "Unrecognized Well-known Attribute" },
{ 3, "Missing Well-known Attribute" },
{ 4, "Attribute Flags Error" },
{ 5, "Attribute Length Error" },
{ 6, "Invalid ORIGIN Attribute" },
{ 7, "AS Routing Loop [Deprecated]" },
{ 8, "Invalid NEXT_HOP Attribute" },
{ 9, "Optional Attribute Error" },
{ 10, "Invalid Network Field" },
{ 11, "Malformed AS_PATH" },
{ 0, NULL }
};
/* RFC6608 Subcodes for BGP Finite State Machine Error */
static const value_string bgpnotify_minor_state_machine[] = {
{ 1, "Receive Unexpected Message in OpenSent State" },
{ 2, "Receive Unexpected Message in OpenConfirm State" },
{ 3, "Receive Unexpected Message in Established State" },
{ 0, NULL }
};
/* RFC4486 Subcodes for BGP Cease Notification Message */
static const value_string bgpnotify_minor_cease[] = {
{ 1, "Maximum Number of Prefixes Reached"},
{ 2, "Administratively Shutdown"},
{ 3, "Peer De-configured"},
{ 4, "Administratively Reset"},
{ 5, "Connection Rejected"},
{ 6, "Other Configuration Change"},
{ 7, "Connection Collision Resolution"},
{ 8, "Out of Resources"},
{ 0, NULL }
};
static const value_string bgpnotify_minor_cap_msg[] = {
{ 1, "Invalid Action Value" },
{ 2, "Invalid Capability Length" },
{ 3, "Malformed Capability Value" },
{ 4, "Unsupported Capability Code" },
{ 0, NULL }
};
static const value_string bgpattr_origin[] = {
{ 0, "IGP" },
{ 1, "EGP" },
{ 2, "INCOMPLETE" },
{ 0, NULL }
};
static const value_string bgp_open_opt_vals[] = {
{ BGP_OPTION_AUTHENTICATION, "Authentication" },
{ BGP_OPTION_CAPABILITY, "Capability" },
{ 0, NULL }
};
static const value_string as_segment_type[] = {
{ 1, "AS_SET" },
{ 2, "AS_SEQUENCE" },
/* RFC1965 has the wrong values, corrected in */
/* draft-ietf-idr-bgp-confed-rfc1965bis-01.txt */
{ 4, "AS_CONFED_SET" },
{ 3, "AS_CONFED_SEQUENCE" },
{ 0, NULL }
};
static const value_string bgpattr_type[] = {
{ BGPTYPE_ORIGIN, "ORIGIN" },
{ BGPTYPE_AS_PATH, "AS_PATH" },
{ BGPTYPE_NEXT_HOP, "NEXT_HOP" },
{ BGPTYPE_MULTI_EXIT_DISC, "MULTI_EXIT_DISC" },
{ BGPTYPE_LOCAL_PREF, "LOCAL_PREF" },
{ BGPTYPE_ATOMIC_AGGREGATE, "ATOMIC_AGGREGATE" },
{ BGPTYPE_AGGREGATOR, "AGGREGATOR" },
{ BGPTYPE_COMMUNITIES, "COMMUNITIES" },
{ BGPTYPE_ORIGINATOR_ID, "ORIGINATOR_ID" },
{ BGPTYPE_CLUSTER_LIST, "CLUSTER_LIST" },
{ BGPTYPE_MP_REACH_NLRI, "MP_REACH_NLRI" },
{ BGPTYPE_MP_UNREACH_NLRI, "MP_UNREACH_NLRI" },
{ BGPTYPE_EXTENDED_COMMUNITY, "EXTENDED_COMMUNITIES" },
{ BGPTYPE_AS4_PATH, "AS4_PATH" },
{ BGPTYPE_AS4_AGGREGATOR, "AS4_AGGREGATOR" },
{ BGPTYPE_SAFI_SPECIFIC_ATTR, "SAFI_SPECIFIC_ATTRIBUTE" },
{ BGPTYPE_TUNNEL_ENCAPS_ATTR, "TUNNEL_ENCAPSULATION_ATTRIBUTE" },
{ BGPTYPE_PMSI_TUNNEL_ATTR, "PMSI_TUNNEL_ATTRIBUTE" },
{ BGPTYPE_AIGP, "AIGP"},
{ BGPTYPE_LINK_STATE_ATTR, "LINK_STATE" },
{ BGPTYPE_ATTR_SET, "ATTR_SET" },
{ 0, NULL }
};
static const value_string pmsi_tunnel_type[] = {
{ PMSI_TUNNEL_NOPRESENT, "Type is not present" },
{ PMSI_TUNNEL_RSVPTE_P2MP, "RSVP-TE P2MP LSP" },
{ PMSI_TUNNEL_MLDP_P2MP, "mLDP P2MP LSP" },
{ PMSI_TUNNEL_PIMSSM, "PIM SSM Tree" },
{ PMSI_TUNNEL_PIMSM, "PIM SM Tree" },
{ PMSI_TUNNEL_BIDIR_PIM, "BIDIR-PIM Tree" },
{ PMSI_TUNNEL_INGRESS, "Ingress Replication" },
{ PMSI_TUNNEL_MLDP_MP2MP, "mLDP MP2MP LSP" },
{ 0, NULL }
};
static const value_string aigp_tlv_type[] = {
{ AIGP_TLV_TYPE, "Type AIGP TLV" },
{ 0, NULL }
};
static const value_string pmsi_mldp_fec_opaque_value_type[] = {
{ PMSI_MLDP_FEC_TYPE_RSVD, "Reserved" },
{ PMSI_MLDP_FEC_TYPE_GEN_LSP, "Generic LSP Identifier" },
{ PMSI_MLDP_FEC_TYPE_EXT_TYPE, "Extended Type field in the following two bytes" },
{ 0, NULL}
};
static const value_string pmsi_mldp_fec_opa_extented_type[] = {
{ PMSI_MLDP_FEC_ETYPE_RSVD, "Reserved" },
{ 0, NULL}
};
static const value_string bgp_attr_tunnel_type[] = {
{ TUNNEL_TYPE_L2TP_OVER_IP, "L2TP_OVER_IP" },
{ TUNNEL_TYPE_GRE, "GRE" },
{ TUNNEL_TYPE_IP_IN_IP, "IP_IN_IP" },
{ 0, NULL }
};
static const value_string subtlv_type[] = {
{ TUNNEL_SUBTLV_ENCAPSULATION, "ENCAPSULATION" },
{ TUNNEL_SUBTLV_PROTO_TYPE, "PROTOCOL_TYPE" },
{ TUNNEL_SUBTLV_COLOR, "COLOR" },
{ TUNNEL_SUBTLV_LOAD_BALANCE, "LOAD_BALANCE" },
{ 0, NULL }
};
static const value_string bgpext_com_type_high[] = {
{ BGP_EXT_COM_TYPE_HIGH_TR_AS2, "Transitive Two-Octet AS" },
{ BGP_EXT_COM_TYPE_HIGH_TR_IP4, "Transitive IPv4-Address" },
{ BGP_EXT_COM_TYPE_HIGH_TR_AS4, "Transitive Four-Octet AS" },
{ BGP_EXT_COM_TYPE_HIGH_TR_OPAQUE, "Transitive Opaque" },
{ BGP_EXT_COM_TYPE_HIGH_TR_QOS, "Transitive QoS Marking" },
{ BGP_EXT_COM_TYPE_HIGH_TR_COS, "Transitive CoS Capability" },
{ BGP_EXT_COM_TYPE_HIGH_TR_EVPN, "Transitive EVPN" },
{ BGP_EXT_COM_TYPE_HIGH_TR_FLOW, "Transitive Flow spec redirect/mirror to IP next-hop" },
{ BGP_EXT_COM_TYPE_HIGH_TR_EXP, "Transitive Experimental"},
{ BGP_EXT_COM_TYPE_HIGH_TR_EXP_FSIP4, "Transitive Experimental Redirect IPv4"},
{ BGP_EXT_COM_TYPE_HIGH_TR_EXP_FSAS4, "Transitive Experimental Redirect AS4"},
{ BGP_EXT_COM_TYPE_HIGH_NTR_AS2, "Non-Transitive Two-Octet AS" },
{ BGP_EXT_COM_TYPE_HIGH_NTR_IP4, "Non-Transitive IPv4-Address" },
{ BGP_EXT_COM_TYPE_HIGH_NTR_AS4, "Non-Transitive Four-Octet AS" },
{ BGP_EXT_COM_TYPE_HIGH_NTR_OPAQUE, "Non-Transitive Opaque" },
{ BGP_EXT_COM_TYPE_HIGH_NTR_QOS, "Non-Transive QoS Marking" },
{ 0, NULL}
};
static const value_string bgpext_com_stype_tr_exp_fs_ip4[] = {
{ BGP_EXT_COM_STYPE_EXP_F_RED_IP4, "Route Target"},
{ 0, NULL}
};
static const value_string bgpext_com_stype_tr_exp_fs_as4[] = {
{ BGP_EXT_COM_STYPE_EXP_F_RED_AS4, "Route Target"},
{ 0, NULL}
};
static const value_string bgpext_com_stype_tr_evpn[] = {
{ BGP_EXT_COM_STYPE_EPVN_MMAC, "MAC Mobility" },
{ BGP_EXT_COM_STYPE_EVPN_LABEL, "ESI MPLS Label" },
{ BGP_EXT_COM_STYPE_EVPN_IMP, "ES Import" },
{ 0, NULL}
};
static const value_string bgpext_com_stype_tr_as2[] = {
{ BGP_EXT_COM_STYPE_AS2_RT, "Route Target" },
{ BGP_EXT_COM_STYPE_AS2_RO, "Route Origin" },
{ BGP_EXT_COM_STYPE_AS2_OSPF, "OSPF Domain Identifier" },
{ BGP_EXT_COM_STYPE_AS2_DCOLL, "BGP Data Collection" },
{ BGP_EXT_COM_STYPE_AS2_SRC_AS, "Source AS" },
{ BGP_EXT_COM_STYPE_AS2_L2VPN, "L2VPN Identifier" },
{ BGP_EXT_COM_STYPE_AS2_CVPND, "Cisco VPN-Distinguisher" },
{ 0, NULL}
};
static const value_string bgpext_com_stype_ntr_as2[] = {
{ BGP_EXT_COM_STYPE_AS2_LBW, "Link Bandwidth" },
{ 0, NULL}
};
static const value_string bgpext_com_stype_tr_as4[] = {
{ BGP_EXT_COM_STYPE_AS4_RT, "Route Target" },
{ BGP_EXT_COM_STYPE_AS4_RO, "Route Origin" },
{ BGP_EXT_COM_STYPE_AS4_GEN, "Generic" },
{ BGP_EXT_COM_STYPE_AS4_OSPF, "OSPF Domain Identifier" },
{ BGP_EXT_COM_STYPE_AS4_S_AS, "Source AS" },
{ BGP_EXT_COM_STYPE_AS4_CIS_V, "Cisco VPN Identifier" },
{ 0, NULL}
};
static const value_string bgpext_com_stype_ntr_as4[] = {
{ BGP_EXT_COM_STYPE_AS4_GEN, "Generic" },
{ 0, NULL}
};
static const value_string bgpext_com_stype_tr_IP4[] = {
{ BGP_EXT_COM_STYPE_IP4_RT, "Route Target" },
{ BGP_EXT_COM_STYPE_IP4_RO, "Route Origin" },
{ BGP_EXT_COM_STYPE_IP4_OSPF_D, "OSPF Domain Identifier" },
{ BGP_EXT_COM_STYPE_IP4_OSPF_R, "OSPF Route ID" },
{ BGP_EXT_COM_STYPE_IP4_L2VPN, "L2VPN Identifier" },
{ BGP_EXT_COM_STYPE_IP4_VRF_I, "VRF Route Import" },
{ BGP_EXT_COM_STYPE_IP4_CIS_D, "Cisco VPN-Distinguisher" },
{ BGP_EXT_COM_STYPE_IP4_SEG_NH, "Inter-area P2MP Segmented Next-Hop" },
{ 0, NULL}
};
static const value_string bgpext_com_stype_tr_opaque[] = {
{ BGP_EXT_COM_STYPE_OPA_OSPF, "OSPF Route Type" },
{ BGP_EXT_COM_STYPE_OPA_COLOR, "Color" },
{ BGP_EXT_COM_STYPE_OPA_ENCAP, "Encapsulation" },
{ BGP_EXT_COM_STYPE_OPA_DGTW, "Default Gateway" },
{ 0, NULL}
};
static const value_string bgpext_com_tunnel_type[] = {
{ BGP_EXT_COM_TUNNEL_RESERVED, "Reserved" },
{ BGP_EXT_COM_TUNNEL_L2TPV3, "L2TPv3 over IP" },
{ BGP_EXT_COM_TUNNEL_GRE, "GRE" },
{ BGP_EXT_COM_TUNNEL_ENDP, "Transmit tunnel endpoint" },
{ BGP_EXT_COM_TUNNEL_IPSEC, "IPsec in Tunnel-mode" },
{ BGP_EXT_COM_TUNNEL_IPIPSEC, "IP in IP tunnel with IPsec Transport Mode" },
{ BGP_EXT_COM_TUNNEL_MPLSIP, "MPLS-in-IP tunnel with IPsec Transport Mode" },
{ BGP_EXT_COM_TUNNEL_IPIP, "IP in IP" },
{ BGP_EXT_COM_TUNNEL_VXLAN, "VXLAN Encapsulation" },
{ BGP_EXT_COM_TUNNEL_NVGRE, "NVGRE Encapsulation" },
{ BGP_EXT_COM_TUNNEL_MPLS, "MPLS Encapsulation" },
{ BGP_EXT_COM_TUNNEL_MPLSGRE, "MPLS in GRE Encapsulation" },
{ BGP_EXT_COM_TUNNEL_VXLANGPE, "VxLAN GPE Encapsulation" },
{ BGP_EXT_COM_TUNNEL_MPLSUDP, "MPLS in UDP Encapsulation" },
{ 0, NULL}
};
static const value_string bgpext_com_stype_ntr_opaque[] = {
{ BGP_EXT_COM_STYPE_OPA_OR_VAL_ST, "BGP Origin Validation state" },
{ 0, NULL}
};
static const value_string bgpext_com_stype_tr_exp[] = {
{ BGP_EXT_COM_STYPE_EXP_F_TR, "Flow spec traffic-rate" },
{ BGP_EXT_COM_STYPE_EXP_F_TA, "Flow spec traffic-action" },
{ BGP_EXT_COM_STYPE_EXP_F_RED, "Flow spec redirect AS 2 bytes" },
{ BGP_EXT_COM_STYPE_EXP_F_RMARK, "Flow spec traffic-remarking" },
{ BGP_EXT_COM_STYPE_EXP_L2, "Layer2 Info" },
{ 0, NULL}
};
static const value_string flow_spec_op_len_val[] = {
{ 0, "1 byte: 1 <<" },
{ 1, "2 bytes: 1 <<" },
{ 2, "4 bytes: 1 <<" },
{ 3, "8 bytes: 1 <<" },
{ 0, NULL }
};
static const value_string qos_tech_type[] = {
{ QOS_TECH_TYPE_DSCP, "DiffServ enabled IP (DSCP encoding)" },
{ QOS_TECH_TYPE_802_1q, "Ethernet using 802.1q priority tag" },
{ QOS_TECH_TYPE_E_LSP, "MPLS using E-LSP" },
{ QOS_TECH_TYPE_VC, "Virtual Channel (VC) encoding" },
{ QOS_TECH_TYPE_GMPLS_TIME, "GMPLS - time slot encoding" },
{ QOS_TECH_TYPE_GMPLS_LAMBDA, "GMPLS - lambda encoding" },
{ QOS_TECH_TYPE_GMPLS_FIBRE, "GMPLS - fibre encoding" },
{ 0, NULL }
};
static const value_string bgp_ssa_type[] = {
{ BGP_SSA_L2TPv3 , "L2TPv3 Tunnel" },
{ BGP_SSA_mGRE , "mGRE Tunnel" },
{ BGP_SSA_IPSec , "IPSec Tunnel" },
{ BGP_SSA_MPLS , "MPLS Tunnel" },
{ BGP_SSA_L2TPv3_IN_IPSec , "L2TPv3 in IPSec Tunnel" },
{ BGP_SSA_mGRE_IN_IPSec , "mGRE in IPSec Tunnel" },
{ 0, NULL }
};
static const value_string bgp_l2vpn_encaps[] = {
{ 0, "Reserved"},
{ 1, "Frame Relay"},
{ 2, "ATM AAL5 SDU VCC transport"},
{ 3, "ATM transparent cell transport"},
{ 4, "Ethernet (VLAN) Tagged mode"},
{ 5, "Ethernet raw mode"},
{ 6, "Cisco-HDLC"},
{ 7, "PPP"},
{ 8, "SONET/SDH CES"},
{ 9, "ATM n-to-one VCC cell transport"},
{ 10, "ATM n-to-one VPC cell transport"},
{ 11, "IP layer 2 transport"},
{ 15, "Frame relay port mode"},
{ 17, "Structure agnostic E1 over packet"},
{ 18, "Structure agnostic T1 over packet"},
{ 19, "VPLS"},
{ 20, "Structure agnostic T3 over packet"},
{ 21, "Nx64kbit/s Basic Service using Structure-aware"},
{ 25, "Frame Relay DLCI"},
{ 40, "Structure agnostic E3 over packet"},
{ 41, "Octet-aligned playload for structure-agnostic DS1 circuits"},
{ 42, "E1 Nx64kbit/s with CAS using Structure-aware"},
{ 43, "DS1 (ESF) Nx64kbit/s with CAS using Structure-aware"},
{ 44, "DS1 (SF) Nx64kbit/s with CAS using Structure-aware"},
{ 64, "IP-interworking"},
{ 0, NULL }
};
static const value_string bgpext_com_ospf_rtype[] = {
{ BGP_OSPF_RTYPE_RTR, "Router" },
{ BGP_OSPF_RTYPE_NET, "Network" },
{ BGP_OSPF_RTYPE_SUM, "Summary" },
{ BGP_OSPF_RTYPE_EXT, "External" },
{ BGP_OSPF_RTYPE_NSSA,"NSSA External" },
{ BGP_OSPF_RTYPE_SHAM,"MPLS-VPN Sham" },
{ 0, NULL }
};
/* Subsequent address family identifier, RFC2858 */
static const value_string bgpattr_nlri_safi[] = {
{ 0, "Reserved" },
{ SAFNUM_UNICAST, "Unicast" },
{ SAFNUM_MULCAST, "Multicast" },
{ SAFNUM_UNIMULC, "Unicast+Multicast" },
{ SAFNUM_MPLS_LABEL, "Labeled Unicast"},
{ SAFNUM_MCAST_VPN, "MCAST-VPN"},
{ SAFNUM_ENCAPSULATION, "Encapsulation"},
{ SAFNUM_TUNNEL, "Tunnel"},
{ SAFNUM_VPLS, "VPLS"},
{ SAFNUM_LINK_STATE, "Link State"},
{ SAFNUM_LAB_VPNUNICAST, "Labeled VPN Unicast" }, /* draft-rosen-rfc2547bis-03 */
{ SAFNUM_LAB_VPNMULCAST, "Labeled VPN Multicast" },
{ SAFNUM_LAB_VPNUNIMULC, "Labeled VPN Unicast+Multicast" },
{ SAFNUM_ROUTE_TARGET, "Route Target Filter" },
{ SAFNUM_EVPN, "EVPN" },
{ SAFNUM_FSPEC_RULE, "Flow Spec Filter" },
{ SAFNUM_FSPEC_VPN_RULE, "Flow Spec Filter VPN" },
{ 0, NULL }
};
/* ORF Type, RFC5291 */
static const value_string orf_type_vals[] = {
{ 2, "Communities ORF-Type" },
{ 3, "Extended Communities ORF-Type" },
{ 128, "Cisco PrefixList ORF-Type" },
{ 129, "Cisco CommunityList ORF-Type" },
{ 130, "Cisco Extended CommunityList ORF-Type" },
{ 131, "Cisco AsPathList ORF-Type" },
{ 0, NULL }
};
/* ORF Send/Receive, RFC5291 */
static const value_string orf_send_recv_vals[] = {
{ 1, "Receive" },
{ 2, "Send" },
{ 3, "Both" },
{ 0, NULL }
};
/* ORF Send/Receive, RFC5291 */
static const value_string orf_when_vals[] = {
{ 1, "Immediate" },
{ 2, "Defer" },
{ 0, NULL }
};
static const value_string orf_entry_action_vals[] = {
{ BGP_ORF_ADD, "Add" },
{ BGP_ORF_REMOVE, "Remove" },
{ BGP_ORF_REMOVEALL, "RemoveAll" },
{ 0, NULL }
};
static const value_string orf_entry_match_vals[] = {
{ BGP_ORF_PERMIT, "Permit" },
{ BGP_ORF_DENY, "Deny" },
{ 0, NULL }
};
static const value_string capability_vals[] = {
{ BGP_CAPABILITY_RESERVED, "Reserved capability" },
{ BGP_CAPABILITY_MULTIPROTOCOL, "Multiprotocol extensions capability" },
{ BGP_CAPABILITY_ROUTE_REFRESH, "Route refresh capability" },
{ BGP_CAPABILITY_COOPERATIVE_ROUTE_FILTERING, "Cooperative route filtering capability" },
{ BGP_CAPABILITY_MULTIPLE_ROUTE_DEST, "Multiple routes to a destination capability" },
{ BGP_CAPABILITY_EXTENDED_NEXT_HOP, "Extended Next Hop Encoding" },
{ BGP_CAPABILITY_EXTENDED_MESSAGE, "BGP-Extended Message" },
{ BGP_CAPABILITY_GRACEFUL_RESTART, "Graceful Restart capability" },
{ BGP_CAPABILITY_4_OCTET_AS_NUMBER, "Support for 4-octet AS number capability" },
{ BGP_CAPABILITY_DYNAMIC_CAPABILITY, "Support for Dynamic capability" },
{ BGP_CAPABILITY_MULTISESSION, "Multisession BGP Capability" },
{ BGP_CAPABILITY_ADDITIONAL_PATHS, "Support for Additional Paths" },
{ BGP_CAPABILITY_ENHANCED_ROUTE_REFRESH, "Enhanced route refresh capability" },
{ BGP_CAPABILITY_LONG_LIVED_GRACEFUL_RESTART, "Long-Lived Graceful Restart (LLGR) Capability" },
{ BGP_CAPABILITY_CP_ORF, "CP-ORF Capability" },
{ BGP_CAPABILITY_FQDN, "FQDN Capability" },
{ BGP_CAPABILITY_ROUTE_REFRESH_CISCO, "Route refresh capability" },
{ BGP_CAPABILITY_ORF_CISCO, "Cooperative route filtering capability" },
{ 0, NULL }
};
static const value_string community_vals[] = {
{ BGP_COMM_NO_EXPORT, "NO_EXPORT" },
{ BGP_COMM_NO_ADVERTISE, "NO_ADVERTISE" },
{ BGP_COMM_NO_EXPORT_SUBCONFED, "NO_EXPORT_SUBCONFED" },
{ 0, NULL }
};
/* Capability Message action code */
static const value_string bgpcap_action[] = {
{ 0, "advertising a capability" },
{ 1, "removing a capability" },
{ 0, NULL }
};
static const value_string mcast_vpn_route_type[] = {
{ MCAST_VPN_RTYPE_INTRA_AS_IPMSI_AD, "Intra-AS I-PMSI A-D route" },
{ MCAST_VPN_RTYPE_INTER_AS_IPMSI_AD, "Inter-AS I-PMSI A-D route" },
{ MCAST_VPN_RTYPE_SPMSI_AD , "S-PMSI A-D route" },
{ MCAST_VPN_RTYPE_LEAF_AD , "Leaf A-D route" },
{ MCAST_VPN_RTYPE_SOURCE_ACTIVE_AD , "Source Active A-D route" },
{ MCAST_VPN_RTYPE_SHARED_TREE_JOIN , "Shared Tree Join route" },
{ MCAST_VPN_RTYPE_SOURCE_TREE_JOIN , "Source Tree Join route" },
{ 0, NULL }
};
/* NLRI type value_string as defined in idr-ls */
static const value_string bgp_ls_nlri_type_vals[] = {
{ LINK_STATE_LINK_NLRI, "Link NLRI" },
{ LINK_STATE_NODE_NLRI, "Node NLRI" },
{ LINK_STATE_IPV4_TOPOLOGY_PREFIX_NLRI, "IPv4 Topology Prefix NLRI" },
{ LINK_STATE_IPV6_TOPOLOGY_PREFIX_NLRI, "IPv6 Topology Prefix NLRI" },
{0, NULL },
};
/* Link-State NLRI Protocol-ID value strings */
static const value_string link_state_nlri_protocol_id_values[] = {
{BGP_LS_NLRI_PROTO_ID_UNKNOWN, "Unknown" },
{BGP_LS_NLRI_PROTO_ID_IS_IS_LEVEL_1, "IS-IS Level 1"},
{BGP_LS_NLRI_PROTO_ID_IS_IS_LEVEL_2, "IS-IS Level 2"},
{BGP_LS_NLRI_PROTO_ID_OSPF, "OSPF"},
{BGP_LS_NLRI_PROTO_ID_DIRECT, "Direct"},
{BGP_LS_NLRI_PROTO_ID_STATIC, "Static"},
{0, NULL},
};
/* Link-State routing universes */
static const val64_string link_state_nlri_routing_universe_values[] = {
{BGP_LS_NLRI_ROUTING_UNIVERSE_LEVEL_3, "L3 packet topology" },
{BGP_LS_NLRI_ROUTING_UNIVERSE_LEVEL_1, "L1 optical topology"},
{0, NULL}
};
/* Link state prefix NLRI OSPF Route Type */
static const value_string link_state_prefix_descriptors_ospf_route_type[] = {
{BGP_LS_PREFIX_OSPF_ROUTE_TYPE_UNKNOWN, "Unknown" },
{BGP_LS_PREFIX_OSPF_ROUTE_TYPE_INTRA_AREA, "Intra-Area"},
{BGP_LS_PREFIX_OSPF_ROUTE_TYPE_INTER_AREA, "Inter Area"},
{BGP_LS_PREFIX_OSPF_ROUTE_TYPE_EXTERNAL_1, "External 1"},
{BGP_LS_PREFIX_OSPF_ROUTE_TYPE_EXTERNAL_2, "External 2"},
{BGP_LS_PREFIX_OSPF_ROUTE_TYPE_NSSA_1, "NSSA 1"},
{BGP_LS_PREFIX_OSPF_ROUTE_TYPE_NSSA_2, "NSSA 2"},
{0, NULL}
};
/* NLRI type value_string as define in BGP flow spec RFC */
static const value_string flowspec_nlri_opvaluepair_type[] = {
{ BGPNLRI_FSPEC_DST_PFIX, "Destination prefix filter" },
{ BGPNLRI_FSPEC_SRC_PFIX, "Source prefix filter" },
{ BGPNLRI_FSPEC_IP_PROTO, "Protocol / Next Header filter" },
{ BGPNLRI_FSPEC_PORT, "Port filter" },
{ BGPNLRI_FSPEC_DST_PORT, "Destination port filter" },
{ BGPNLRI_FSPEC_SRC_PORT, "Source port filter" },
{ BGPNLRI_FSPEC_ICMP_TP, "ICMP type filter" },
{ BGPNLRI_FSPEC_ICMP_CD, "ICMP code filter" },
{ BGPNLRI_FSPEC_TCP_FLAGS,"TCP flags filter" },
{ BGPNLRI_FSPEC_PCK_LEN, "Packet Length filter" },
{ BGPNLRI_FSPEC_DSCP, "DSCP marking filter" },
{ BGPNLRI_FSPEC_FRAGMENT, "IP fragment filter" },
{0, NULL },
};
#define BGPNLRI_FSPEC_FRAGMENT 12 /* RFC 5575 */
/* Subtype Route Refresh, draft-ietf-idr-bgp-enhanced-route-refresh-02 */
static const value_string route_refresh_subtype_vals[] = {
{ 0, "Normal route refresh request [RFC2918] with/without ORF [RFC5291]" },
{ 1, "Demarcation of the beginning of a route refresh" },
{ 2, "Demarcation of the ending of a route refresh" },
{ 0, NULL }
};
static const true_false_string tfs_optional_wellknown = { "Optional", "Well-known" };
static const true_false_string tfs_transitive_non_transitive = { "Transitive", "Non-transitive" };
static const true_false_string tfs_partial_complete = { "Partial", "Complete" };
static const true_false_string tfs_extended_regular_length = { "Extended length", "Regular length" };
static const true_false_string tfs_esi_label_flag = { "Single-Active redundancy", "All-Active redundancy" };
/* Maximal size of an IP address string */
#define MAX_SIZE_OF_IP_ADDR_STRING 16
static int proto_bgp = -1;
/* BGP header field initialisation */
/* global BGP header filed */
static int hf_bgp_marker = -1;
static int hf_bgp_length = -1;
static int hf_bgp_prefix_length = -1;
static int hf_bgp_rd = -1;
static int hf_bgp_continuation = -1;
static int hf_bgp_originating_as = -1;
static int hf_bgp_community_prefix = -1;
static int hf_bgp_endpoint_address = -1;
static int hf_bgp_endpoint_address_ipv6 = -1;
static int hf_bgp_label_stack = -1;
static int hf_bgp_vplsad_length = -1;
static int hf_bgp_vplsad_rd = -1;
static int hf_bgp_bgpad_pe_addr = -1;
static int hf_bgp_vplsbgp_ce_id = -1;
static int hf_bgp_vplsbgp_labelblock_offset = -1;
static int hf_bgp_vplsbgp_labelblock_size = -1;
static int hf_bgp_vplsbgp_labelblock_base = -1;
static int hf_bgp_wildcard_route_target = -1;
static int hf_bgp_type = -1;
/* BGP open message header filed */
static int hf_bgp_open_version = -1;
static int hf_bgp_open_myas = -1;
static int hf_bgp_open_holdtime = -1;
static int hf_bgp_open_identifier = -1;
static int hf_bgp_open_opt_len = -1;
static int hf_bgp_open_opt_params = -1;
static int hf_bgp_open_opt_param = -1;
static int hf_bgp_open_opt_param_type = -1;
static int hf_bgp_open_opt_param_len = -1;
static int hf_bgp_open_opt_param_auth = -1;
static int hf_bgp_open_opt_param_unknown = -1;
/* BGP notify header field */
static int hf_bgp_notify_major_error = -1;
static int hf_bgp_notify_minor_msg_hdr = -1;
static int hf_bgp_notify_minor_open_msg = -1;
static int hf_bgp_notify_minor_update_msg = -1;
static int hf_bgp_notify_minor_ht_expired = -1;
static int hf_bgp_notify_minor_state_machine = -1;
static int hf_bgp_notify_minor_cease = -1;
static int hf_bgp_notify_minor_cap_msg = -1;
static int hf_bgp_notify_minor_unknown = -1;
static int hf_bgp_notify_data = -1;
/* BGP route refresh header field */
static int hf_bgp_route_refresh_afi = -1;
static int hf_bgp_route_refresh_subtype = -1;
static int hf_bgp_route_refresh_safi = -1;
static int hf_bgp_route_refresh_orf = -1;
static int hf_bgp_route_refresh_orf_flag = -1;
static int hf_bgp_route_refresh_orf_type = -1;
static int hf_bgp_route_refresh_orf_length = -1;
static int hf_bgp_route_refresh_orf_entry_prefixlist = -1;
static int hf_bgp_route_refresh_orf_entry_action = -1;
static int hf_bgp_route_refresh_orf_entry_match = -1;
static int hf_bgp_route_refresh_orf_entry_sequence = -1;
static int hf_bgp_route_refresh_orf_entry_prefixmask_lower = -1;
static int hf_bgp_route_refresh_orf_entry_prefixmask_upper = -1;
static int hf_bgp_route_refresh_orf_entry_ip = -1;
/* BGP capabilities header field */
static int hf_bgp_cap = -1;
static int hf_bgp_cap_type = -1;
static int hf_bgp_cap_length = -1;
static int hf_bgp_cap_action = -1;
static int hf_bgp_cap_unknown = -1;
static int hf_bgp_cap_reserved = -1;
static int hf_bgp_cap_mp_afi = -1;
static int hf_bgp_cap_mp_safi = -1;
static int hf_bgp_cap_gr_timers = -1;
static int hf_bgp_cap_gr_timers_restart_flag = -1;
static int hf_bgp_cap_gr_timers_restart_time = -1;
static int hf_bgp_cap_gr_afi = -1;
static int hf_bgp_cap_gr_safi = -1;
static int hf_bgp_cap_gr_flag = -1;
static int hf_bgp_cap_gr_flag_pfs = -1;
static int hf_bgp_cap_4as = -1;
static int hf_bgp_cap_dc = -1;
static int hf_bgp_cap_ap_afi = -1;
static int hf_bgp_cap_ap_safi = -1;
static int hf_bgp_cap_ap_sendreceive = -1;
static int hf_bgp_cap_orf_afi = -1;
static int hf_bgp_cap_orf_safi = -1;
static int hf_bgp_cap_orf_number = -1;
static int hf_bgp_cap_orf_type = -1;
static int hf_bgp_cap_orf_sendreceive = -1;
static int hf_bgp_cap_fqdn_hostname_len = -1;
static int hf_bgp_cap_fqdn_hostname = -1;
static int hf_bgp_cap_fqdn_domain_name_len = -1;
static int hf_bgp_cap_fqdn_domain_name = -1;
/* BGP update global header field */
static int hf_bgp_update_withdrawn_routes_length = -1;
static int hf_bgp_update_withdrawn_routes = -1;
/* BGP update path attribute header field */
static int hf_bgp_update_total_path_attribute_length = -1;
static int hf_bgp_update_path_attributes = -1;
static int hf_bgp_update_path_attributes_unknown = -1;
static int hf_bgp_update_path_attribute_communities = -1;
static int hf_bgp_update_path_attribute_community_well_known = -1;
static int hf_bgp_update_path_attribute_community = -1;
static int hf_bgp_update_path_attribute_community_as = -1;
static int hf_bgp_update_path_attribute_community_value = -1;
static int hf_bgp_update_path_attribute = -1;
static int hf_bgp_update_path_attribute_flags = -1;
static int hf_bgp_update_path_attribute_flags_optional = -1;
static int hf_bgp_update_path_attribute_flags_transitive = -1;
static int hf_bgp_update_path_attribute_flags_partial = -1;
static int hf_bgp_update_path_attribute_flags_extended_length = -1;
static int hf_bgp_update_path_attribute_type_code = -1;
static int hf_bgp_update_path_attribute_length = -1;
static int hf_bgp_update_path_attribute_next_hop = -1;
static int hf_bgp_update_path_attribute_as_path_segment = -1;
static int hf_bgp_update_path_attribute_as_path_segment_type = -1;
static int hf_bgp_update_path_attribute_as_path_segment_length = -1;
static int hf_bgp_update_path_attribute_as_path_segment_as2 = -1;
static int hf_bgp_update_path_attribute_as_path_segment_as4 = -1;
static int hf_bgp_update_path_attribute_origin = -1;
static int hf_bgp_update_path_attribute_cluster_list = -1;
static int hf_bgp_update_path_attribute_cluster_id = -1;
static int hf_bgp_update_path_attribute_originator_id = -1;
static int hf_bgp_update_path_attribute_local_pref = -1;
static int hf_bgp_update_path_attribute_attrset_origin_as = -1;
static int hf_bgp_update_path_attribute_multi_exit_disc = -1;
static int hf_bgp_update_path_attribute_aggregator_as = -1;
static int hf_bgp_update_path_attribute_aggregator_origin = -1;
static int hf_bgp_update_path_attribute_link_state = -1;
static int hf_bgp_update_path_attribute_mp_reach_nlri_address_family = -1;
static int hf_bgp_update_path_attribute_mp_reach_nlri_safi = -1;
static int hf_bgp_update_path_attribute_mp_reach_nlri_next_hop = -1;
static int hf_bgp_update_path_attribute_mp_reach_nlri_nbr_snpa = -1;
static int hf_bgp_update_path_attribute_mp_reach_nlri_snpa_length = -1;
static int hf_bgp_update_path_attribute_mp_reach_nlri_snpa = -1;
static int hf_bgp_update_path_attribute_mp_unreach_nlri_address_family = -1;
static int hf_bgp_update_path_attribute_mp_unreach_nlri_safi = -1;
static int hf_bgp_update_path_attribute_aigp = -1;
static int hf_bgp_evpn_nlri = -1;
static int hf_bgp_evpn_nlri_rt = -1;
static int hf_bgp_evpn_nlri_len = -1;
static int hf_bgp_evpn_nlri_rd = -1;
static int hf_bgp_evpn_nlri_esi = -1;
static int hf_bgp_evpn_nlri_esi_type = -1;
static int hf_bgp_evpn_nlri_esi_lacp_mac = -1;
static int hf_bgp_evpn_nlri_esi_portk = -1;
static int hf_bgp_evpn_nlri_esi_remain = -1;
static int hf_bgp_evpn_nlri_esi_value = -1;
static int hf_bgp_evpn_nlri_esi_rb_mac = -1;
static int hf_bgp_evpn_nlri_esi_rbprio = -1;
static int hf_bgp_evpn_nlri_esi_sys_mac = -1;
static int hf_bgp_evpn_nlri_esi_mac_discr = -1;
static int hf_bgp_evpn_nlri_esi_router_id = -1;
static int hf_bgp_evpn_nlri_esi_router_discr = -1;
static int hf_bgp_evpn_nlri_esi_asn = -1;
static int hf_bgp_evpn_nlri_esi_asn_discr = -1;
static int hf_bgp_evpn_nlri_esi_reserved = -1;
static int hf_bgp_evpn_nlri_etag = -1;
static int hf_bgp_evpn_nlri_mpls_ls = -1;
static int hf_bgp_evpn_nlri_maclen = -1;
static int hf_bgp_evpn_nlri_mac_addr = -1;
static int hf_bgp_evpn_nlri_iplen = -1;
static int hf_bgp_evpn_nlri_prefix_len = -1;
static int hf_bgp_evpn_nlri_ip_addr = -1;
static int hf_bgp_evpn_nlri_ipv6_addr = -1;
static int hf_bgp_evpn_nlri_ipv4_gtw = -1;
static int hf_bgp_evpn_nlri_ipv6_gtw = -1;
/* BGP update tunnel encaps attribute RFC 5512 */
static int hf_bgp_update_encaps_tunnel_tlv_len = -1;
static int hf_bgp_update_encaps_tunnel_tlv_type = -1;
static int hf_bgp_update_encaps_tunnel_subtlv_len = -1;
static int hf_bgp_update_encaps_tunnel_subtlv_type = -1;
static int hf_bgp_update_encaps_tunnel_subtlv_session_id = -1;
static int hf_bgp_update_encaps_tunnel_subtlv_cookie = -1;
static int hf_bgp_update_encaps_tunnel_subtlv_gre_key = -1;
static int hf_bgp_update_encaps_tunnel_subtlv_color_value = -1;
static int hf_bgp_update_encaps_tunnel_subtlv_lb_block_length = -1;
/* RFC 6514 PMSI Tunnel Attribute */
static int hf_bgp_pmsi_tunnel_flags = -1;
static int hf_bgp_pmsi_tunnel_type = -1;
static int hf_bgp_pmsi_tunnel_id = -1;
static int hf_bgp_pmsi_tunnel_not_present = -1;
static int hf_bgp_pmsi_tunnel_rsvp_p2mp_id = -1; /* RFC4875 section 19 */
static int hf_bgp_pmsi_tunnel_rsvp_p2mp_tunnel_id = -1;
static int hf_bgp_pmsi_tunnel_rsvp_p2mp_ext_tunnel_idv4 = -1;
static int hf_bgp_pmsi_tunnel_mldp_fec_el_type = -1; /* RFC 6388 section 2.3 */
static int hf_bgp_pmsi_tunnel_mldp_fec_el_afi = -1;
static int hf_bgp_pmsi_tunnel_mldp_fec_el_adr_len = -1;
static int hf_bgp_pmsi_tunnel_mldp_fec_el_root_nodev4 = -1;
static int hf_bgp_pmsi_tunnel_mldp_fec_el_root_nodev6 = -1;
static int hf_bgp_pmsi_tunnel_mldp_fec_el_opa_len = -1;
static int hf_bgp_pmsi_tunnel_mldp_fec_el_opa_val_type = -1;
static int hf_bgp_pmsi_tunnel_mldp_fec_el_opa_val_len = -1;
static int hf_bgp_pmsi_tunnel_mldp_fec_el_opa_value_rn = -1;
static int hf_bgp_pmsi_tunnel_mldp_fec_el_opa_value_str = -1;
static int hf_bgp_pmsi_tunnel_mldp_fec_el_opa_val_ext_type = -1;
static int hf_bgp_pmsi_tunnel_mldp_fec_el_opa_val_ext_len = -1;
static int hf_bgp_pmsi_tunnel_pimsm_sender = -1;
static int hf_bgp_pmsi_tunnel_pimsm_pmc_group = -1;
static int hf_bgp_pmsi_tunnel_pimssm_root_node = -1;
static int hf_bgp_pmsi_tunnel_pimssm_pmc_group = -1;
static int hf_bgp_pmsi_tunnel_pimbidir_sender = -1;
static int hf_bgp_pmsi_tunnel_pimbidir_pmc_group = -1;
static int hf_bgp_pmsi_tunnel_ingress_rep_addr = -1;
/* draft-ietf-idr-aigp-18 attribute */
static int hf_bgp_aigp_type = -1;
static int hf_bgp_aigp_tlv_length = -1;
static int hf_bgp_aigp_accu_igp_metric = -1;
/* MPLS labels decoding */
static int hf_bgp_update_mpls_label = -1;
static int hf_bgp_update_mpls_label_value = -1;
static int hf_bgp_update_mpls_label_value_20bits = -1;
/* BGP update path attribute SSA SAFI Specific attribute (deprecated should we keep it ?) */
static int hf_bgp_ssa_t = -1;
static int hf_bgp_ssa_type = -1;
static int hf_bgp_ssa_len = -1;
static int hf_bgp_ssa_value = -1;
static int hf_bgp_ssa_l2tpv3_pref = -1;
static int hf_bgp_ssa_l2tpv3_s = -1;
static int hf_bgp_ssa_l2tpv3_unused = -1;
static int hf_bgp_ssa_l2tpv3_cookie_len = -1;
static int hf_bgp_ssa_l2tpv3_session_id = -1;
static int hf_bgp_ssa_l2tpv3_cookie = -1;
/* BGP NLRI head field */
static int hf_bgp_update_nlri = -1;
static int hf_bgp_mp_reach_nlri_ipv4_prefix = -1;
static int hf_bgp_mp_unreach_nlri_ipv4_prefix = -1;
static int hf_bgp_mp_reach_nlri_ipv6_prefix = -1;
static int hf_bgp_mp_unreach_nlri_ipv6_prefix = -1;
static int hf_bgp_mp_nlri_tnl_id = -1;
static int hf_bgp_withdrawn_prefix = -1;
static int hf_bgp_nlri_prefix = -1;
static int hf_bgp_nlri_path_id = -1;
/* BGP mcast IP VPN nlri header field */
static int hf_bgp_mcast_vpn_nlri_t = -1;
static int hf_bgp_mcast_vpn_nlri_route_type = -1;
static int hf_bgp_mcast_vpn_nlri_length = -1;
static int hf_bgp_mcast_vpn_nlri_rd = -1;
static int hf_bgp_mcast_vpn_nlri_origin_router_ipv4 = -1;
static int hf_bgp_mcast_vpn_nlri_origin_router_ipv6 = -1;
static int hf_bgp_mcast_vpn_nlri_source_as = -1;
static int hf_bgp_mcast_vpn_nlri_source_length = -1;
static int hf_bgp_mcast_vpn_nlri_group_length = -1;
static int hf_bgp_mcast_vpn_nlri_source_addr_ipv4 = -1;
static int hf_bgp_mcast_vpn_nlri_source_addr_ipv6 = -1;
static int hf_bgp_mcast_vpn_nlri_group_addr_ipv4 = -1;
static int hf_bgp_mcast_vpn_nlri_group_addr_ipv6 = -1;
static int hf_bgp_mcast_vpn_nlri_route_key = -1;
/* BGP-LS */
static int hf_bgp_ls_type = -1;
static int hf_bgp_ls_length = -1;
static int hf_bgp_ls_safi72_nlri = -1;
static int hf_bgp_ls_safi128_nlri = -1;
static int hf_bgp_ls_safi128_nlri_route_distinguisher = -1;
static int hf_bgp_ls_safi128_nlri_route_distinguisher_type = -1;
static int hf_bgp_ls_safi128_nlri_route_dist_admin_asnum_2 = -1;
static int hf_bgp_ls_safi128_nlri_route_dist_admin_ipv4 = -1;
static int hf_bgp_ls_safi128_nlri_route_dist_admin_asnum_4 = -1;
static int hf_bgp_ls_safi128_nlri_route_dist_asnum_2 = -1;
static int hf_bgp_ls_safi128_nlri_route_dist_asnum_4 = -1;
static int hf_bgp_ls_nlri_type = -1;
static int hf_bgp_ls_nlri_length = -1;
static int hf_bgp_ls_nlri_link_nlri_type = -1;
static int hf_bgp_ls_nlri_link_descriptors_tlv = -1;
static int hf_bgp_ls_nlri_prefix_descriptors_tlv = -1;
static int hf_bgp_ls_nlri_link_local_identifier = -1;
static int hf_bgp_ls_nlri_link_remote_identifier = -1;
static int hf_bgp_ls_nlri_ipv4_interface_address = -1;
static int hf_bgp_ls_nlri_ipv4_neighbor_address = -1;
static int hf_bgp_ls_nlri_ipv6_interface_address = -1;
static int hf_bgp_ls_nlri_ipv6_neighbor_address = -1;
static int hf_bgp_ls_nlri_multi_topology_id = -1;
static int hf_bgp_ls_nlri_ospf_route_type = -1;
static int hf_bgp_ls_nlri_ip_reachability_prefix_length = -1;
static int hf_bgp_ls_nlri_ip_reachability_prefix_ip = -1;
static int hf_bgp_ls_nlri_node_nlri_type = -1;
static int hf_bgp_ls_nlri_node_protocol_id = -1;
static int hf_bgp_ls_nlri_node_identifier = -1;
static int hf_bgp_ls_ipv4_topology_prefix_nlri_type = -1;
static int hf_bgp_ls_ipv6_topology_prefix_nlri_type = -1;
/* draft-ietf-idr-ls-distribution-03 TLVs */
static int hf_bgp_ls_tlv_local_node_descriptors = -1; /* 256 */
static int hf_bgp_ls_tlv_remote_node_descriptors = -1; /* 257 */
static int hf_bgp_ls_tlv_link_local_remote_identifiers = -1; /* 258 */
static int hf_bgp_ls_tlv_ipv4_interface_address = -1; /* 259 */
static int hf_bgp_ls_tlv_ipv4_neighbor_address = -1; /* 260 */
static int hf_bgp_ls_tlv_ipv6_interface_address = -1; /* 261 */
static int hf_bgp_ls_tlv_ipv6_neighbor_address = -1; /* 262 */
static int hf_bgp_ls_tlv_multi_topology_id = -1; /* 263 */
static int hf_bgp_ls_tlv_ospf_route_type = -1; /* 264 */
static int hf_bgp_ls_tlv_ip_reachability_information = -1; /* 265 */
static int hf_bgp_ls_tlv_autonomous_system = -1; /* 512 */
static int hf_bgp_ls_tlv_autonomous_system_id = -1;
static int hf_bgp_ls_tlv_bgp_ls_identifier = -1; /* 513 */
static int hf_bgp_ls_tlv_bgp_ls_identifier_id = -1;
static int hf_bgp_ls_tlv_area_id = -1; /* 514 */
static int hf_bgp_ls_tlv_area_id_id = -1;
static int hf_bgp_ls_tlv_igp_router = -1; /* 515 */
static int hf_bgp_ls_tlv_igp_router_id = -1;
static int hf_bgp_ls_tlv_node_flags_bits = -1; /* 1024 */
static int hf_bgp_ls_tlv_opaque_node_properties = -1; /* 1025 */
static int hf_bgp_ls_tlv_opaque_node_properties_value = -1;
static int hf_bgp_ls_tlv_node_name = -1; /* 1026 */
static int hf_bgp_ls_tlv_node_name_value = -1;
static int hf_bgp_ls_tlv_is_is_area_identifier = -1; /* 1027 */
static int hf_bgp_ls_tlv_is_is_area_identifier_value = -1;
static int hf_bgp_ls_tlv_ipv4_router_id_of_local_node = -1; /* 1028 */
static int hf_bgp_ls_tlv_ipv4_router_id_value = -1;
static int hf_bgp_ls_tlv_ipv6_router_id_value = -1;
static int hf_bgp_ls_tlv_ipv6_router_id_of_local_node = -1; /* 1029 */
static int hf_bgp_ls_tlv_ipv4_router_id_of_remote_node = -1; /* 1030 */
static int hf_bgp_ls_tlv_ipv6_router_id_of_remote_node = -1; /* 1031 */
static int hf_bgp_ls_tlv_administrative_group_color = -1; /* 1088 */
static int hf_bgp_ls_tlv_administrative_group_color_value = -1;
static int hf_bgp_ls_tlv_administrative_group = -1;
static int hf_bgp_ls_tlv_max_link_bandwidth = -1; /* 1089 */
static int hf_bgp_ls_tlv_max_reservable_link_bandwidth = -1; /* 1090 */
static int hf_bgp_ls_tlv_unreserved_bandwidth = -1; /* 1091 */
static int hf_bgp_ls_bandwidth_value = -1;
static int hf_bgp_ls_tlv_te_default_metric = -1; /* 1092 */
static int hf_bgp_ls_tlv_te_default_metric_value = -1;
static int hf_bgp_ls_tlv_link_protection_type = -1; /* 1093 */
static int hf_bgp_ls_tlv_link_protection_type_value = -1;
static int hf_bgp_ls_tlv_mpls_protocol_mask = -1; /* 1094 */
static int hf_bgp_ls_tlv_metric = -1; /* 1095 */
static int hf_bgp_ls_tlv_metric_value = -1;
static int hf_bgp_ls_tlv_shared_risk_link_group = -1; /* 1096 */
static int hf_bgp_ls_tlv_shared_risk_link_group_value = -1;
static int hf_bgp_ls_tlv_opaque_link_attribute = -1; /* 1097 */
static int hf_bgp_ls_tlv_opaque_link_attribute_value = -1;
static int hf_bgp_ls_tlv_link_name_attribute = -1; /* 1098 */
static int hf_bgp_ls_tlv_link_name_attribute_value = -1;
static int hf_bgp_ls_tlv_igp_flags = -1; /* 1152 */
static int hf_bgp_ls_tlv_route_tag = -1; /* 1153 */
static int hf_bgp_ls_tlv_route_tag_value = -1;
static int hf_bgp_ls_tlv_route_extended_tag = -1; /* 1154 */
static int hf_bgp_ls_tlv_route_extended_tag_value = -1;
static int hf_bgp_ls_tlv_prefix_metric = -1; /* 1155 */
static int hf_bgp_ls_tlv_prefix_metric_value = -1;
static int hf_bgp_ls_ospf_forwarding_address = -1; /* 1156 */
static int hf_bgp_ls_ospf_forwarding_address_ipv4_address = -1;
static int hf_bgp_ls_ospf_forwarding_address_ipv6_address = -1;
static int hf_bgp_ls_opaque_prefix_attribute = -1; /* 1157 */
static int hf_bgp_ls_opaque_prefix_attribute_value = -1;
/* Link Protection Types */
static int hf_bgp_ls_link_protection_type_extra_traffic = -1;
static int hf_bgp_ls_link_protection_type_unprotected = -1;
static int hf_bgp_ls_link_protection_type_shared = -1;
static int hf_bgp_ls_link_protection_type_dedicated_1to1 = -1;
static int hf_bgp_ls_link_protection_type_dedicated_1plus1 = -1;
static int hf_bgp_ls_link_protection_type_enhanced = -1;
/* MPLS Protocol Mask flags */
static int hf_bgp_ls_mpls_protocol_mask_flag_l = -1;
static int hf_bgp_ls_mpls_protocol_mask_flag_r = -1;
/* BGP-LS IGP Flags */
static int hf_bgp_ls_igp_flags_flag_d = -1;
/* Node Flag Bits TLV's flags */
static int hf_bgp_ls_node_flag_bits_overload = -1;
static int hf_bgp_ls_node_flag_bits_attached = -1;
static int hf_bgp_ls_node_flag_bits_external = -1;
static int hf_bgp_ls_node_flag_bits_abr = -1;
/* BGP flow spec nlri header field */
static int hf_bgp_flowspec_nlri_t = -1;
static int hf_bgp_flowspec_nlri_filter = -1;
static int hf_bgp_flowspec_nlri_filter_type = -1;
static int hf_bgp_flowspec_nlri_length = -1;
static int hf_bgp_flowspec_nlri_dst_pref_ipv4 = -1;
static int hf_bgp_flowspec_nlri_src_pref_ipv4 = -1;
static int hf_bgp_flowspec_nlri_op_flags = -1;
static int hf_bgp_flowspec_nlri_op_eol = -1;
static int hf_bgp_flowspec_nlri_op_and = -1;
static int hf_bgp_flowspec_nlri_op_val_len = -1;
static int hf_bgp_flowspec_nlri_op_un_bit4 = -1;
static int hf_bgp_flowspec_nlri_op_un_bit5 = -1;
static int hf_bgp_flowspec_nlri_op_lt = -1;
static int hf_bgp_flowspec_nlri_op_gt = -1;
static int hf_bgp_flowspec_nlri_op_eq = -1;
static int hf_bgp_flowspec_nlri_dec_val_8 = -1;
static int hf_bgp_flowspec_nlri_dec_val_16 = -1;
static int hf_bgp_flowspec_nlri_dec_val_32 = -1;
static int hf_bgp_flowspec_nlri_dec_val_64 = -1;
static int hf_bgp_flowspec_nlri_op_flg_not = -1;
static int hf_bgp_flowspec_nlri_op_flg_match = -1;
static int hf_bgp_flowspec_nlri_tcp_flags = -1;
static int hf_bgp_flowspec_nlri_tcp_flags_cwr = -1;
static int hf_bgp_flowspec_nlri_tcp_flags_ecn = -1;
static int hf_bgp_flowspec_nlri_tcp_flags_urg = -1;
static int hf_bgp_flowspec_nlri_tcp_flags_ack = -1;
static int hf_bgp_flowspec_nlri_tcp_flags_push = -1;
static int hf_bgp_flowspec_nlri_tcp_flags_reset = -1;
static int hf_bgp_flowspec_nlri_tcp_flags_syn = -1;
static int hf_bgp_flowspec_nlri_tcp_flags_fin = -1;
static int hf_bgp_flowspec_nlri_fflag = -1;
static int hf_bgp_flowspec_nlri_fflag_lf = -1;
static int hf_bgp_flowspec_nlri_fflag_ff = -1;
static int hf_bgp_flowspec_nlri_fflag_isf = -1;
static int hf_bgp_flowspec_nlri_fflag_df = -1;
static int hf_bgp_flowspec_nlri_dscp = -1;
static int hf_bgp_flowspec_nlri_src_ipv6_pref = -1;
static int hf_bgp_flowspec_nlri_dst_ipv6_pref = -1;
static int hf_bgp_flowspec_nlri_ipv6_pref_len = -1;
static int hf_bgp_flowspec_nlri_ipv6_pref_offset = -1;
/* BGP update safi ndt nlri draft-nalawade-idr-mdt-safi-03 */
static int hf_bgp_mdt_nlri_safi_rd = -1;
static int hf_bgp_mdt_nlri_safi_ipv4_addr = -1;
static int hf_bgp_mdt_nlri_safi_group_addr = -1;
/* BGP update extended community header field */
static int hf_bgp_ext_communities = -1;
static int hf_bgp_ext_community = -1;
static int hf_bgp_ext_com_type_high = -1;
static int hf_bgp_ext_com_stype_low_unknown = -1;
static int hf_bgp_ext_com_stype_tr_evpn = -1;
static int hf_bgp_ext_com_stype_tr_as2 = -1;
static int hf_bgp_ext_com_stype_ntr_as2 = -1;
static int hf_bgp_ext_com_stype_tr_as4 = -1;
static int hf_bgp_ext_com_stype_ntr_as4 = -1;
static int hf_bgp_ext_com_stype_tr_IP4 = -1;
static int hf_bgp_ext_com_stype_tr_opaque = -1;
static int hf_bgp_ext_com_stype_ntr_opaque = -1;
static int hf_bgp_ext_com_tunnel_type = -1;
static int hf_bgp_ext_com_stype_tr_exp = -1;
static int hf_bgp_ext_com_stype_tr_exp_fs_ip4 = -1;
static int hf_bgp_ext_com_stype_tr_exp_fs_as4 = -1;
static int hf_bgp_ext_com_value_as2 = -1;
static int hf_bgp_ext_com_value_as4 = -1;
static int hf_bgp_ext_com_value_IP4 = -1;
static int hf_bgp_ext_com_value_an2 = -1;
static int hf_bgp_ext_com_value_an4 = -1;
static int hf_bgp_ext_com_value_unknown16 = -1;
static int hf_bgp_ext_com_value_unknown32 = -1;
static int hf_bgp_ext_com_value_link_bw = -1;
static int hf_bgp_ext_com_value_ospf_rtype = -1;
static int hf_bgp_ext_com_value_ospf_rtype_option = -1;
static int hf_bgp_ext_com_value_fs_remark = -1;
/* BGP QoS propagation draft-knoll-idr-qos-attribute */
static int hf_bgp_ext_com_qos_flags = -1;
static int hf_bgp_ext_com_qos_flags_remarking = -1;
static int hf_bgp_ext_com_qos_flags_ignore_remarking = -1;
static int hf_bgp_ext_com_qos_flags_agg_marking = -1;
static int hf_bgp_ext_com_cos_flags = -1;
static int hf_bgp_ext_com_cos_flags_be = -1;
static int hf_bgp_ext_com_cos_flags_ef = -1;
static int hf_bgp_ext_com_cos_flags_af = -1;
static int hf_bgp_ext_com_cos_flags_le = -1;
static int hf_bgp_ext_com_qos_set_number = -1;
static int hf_bgp_ext_com_qos_tech_type = -1;
static int hf_bgp_ext_com_qos_marking_o = -1;
static int hf_bgp_ext_com_qos_marking_a = -1;
static int hf_bgp_ext_com_qos_default_to_zero = -1;
/* BGP Flow spec extended community RFC 5575 */
static int hf_bgp_ext_com_flow_rate_float = -1;
static int hf_bgp_ext_com_flow_act_allset = -1;
static int hf_bgp_ext_com_flow_act_term_act = -1;
static int hf_bgp_ext_com_flow_act_samp_act = -1;
/* BGP L2 extended community RFC 4761, RFC 6624 */
/* draft-ietf-l2vpn-vpls-multihoming */
static int hf_bgp_ext_com_l2_encaps = -1;
static int hf_bgp_ext_com_l2_c_flags = -1;
static int hf_bgp_ext_com_l2_mtu = -1;
static int hf_bgp_ext_com_l2_flag_d = -1;
static int hf_bgp_ext_com_l2_flag_z1 = -1;
static int hf_bgp_ext_com_l2_flag_f = -1;
static int hf_bgp_ext_com_l2_flag_z345 = -1;
static int hf_bgp_ext_com_l2_flag_c = -1;
static int hf_bgp_ext_com_l2_flag_s = -1;
static int hf_bgp_ext_com_l2_esi_label_flag = -1;
static gint ett_bgp = -1;
static gint ett_bgp_prefix = -1;
static gint ett_bgp_unfeas = -1;
static gint ett_bgp_attrs = -1;
static gint ett_bgp_attr = -1;
static gint ett_bgp_attr_flags = -1;
static gint ett_bgp_mp_nhna = -1;
static gint ett_bgp_mp_reach_nlri = -1;
static gint ett_bgp_mp_unreach_nlri = -1;
static gint ett_bgp_mp_snpa = -1;
static gint ett_bgp_nlri = -1;
static gint ett_bgp_open = -1;
static gint ett_bgp_update = -1;
static gint ett_bgp_notification = -1;
static gint ett_bgp_route_refresh = -1; /* ROUTE-REFRESH message tree */
static gint ett_bgp_capability = -1;
static gint ett_bgp_as_path_segment = -1;
static gint ett_bgp_as_path_segment_asn = -1;
static gint ett_bgp_communities = -1;
static gint ett_bgp_community = -1;
static gint ett_bgp_cluster_list = -1; /* cluster list tree */
static gint ett_bgp_options = -1; /* optional parameters tree */
static gint ett_bgp_option = -1; /* an optional parameter tree */
static gint ett_bgp_cap = -1; /* an cap parameter tree */
static gint ett_bgp_extended_communities = -1; /* extended communities list tree */
static gint ett_bgp_extended_community = -1; /* extended comminiy tree for each community of BGP update */
static gint ett_bgp_extended_com_fspec_redir = -1; /* extended communities BGP flow act redirect */
static gint ett_bgp_ext_com_flags = -1; /* extended communities flags tree */
static gint ett_bgp_ext_com_l2_flags = -1; /* extended commuties tree for l2 services flags */
static gint ett_bgp_ssa = -1; /* safi specific attribute */
static gint ett_bgp_ssa_subtree = -1; /* safi specific attribute Subtrees */
static gint ett_bgp_orf = -1; /* orf (outbound route filter) tree */
static gint ett_bgp_orf_entry = -1; /* orf entry tree */
static gint ett_bgp_mcast_vpn_nlri = -1;
static gint ett_bgp_flow_spec_nlri = -1;
static gint ett_bgp_flow_spec_nlri_filter = -1; /* tree decoding multiple op and value pairs */
static gint ett_bgp_flow_spec_nlri_op_flags = -1; /* tree decoding each op and val pair within the op and value set */
static gint ett_bgp_flow_spec_nlri_tcp = -1;
static gint ett_bgp_flow_spec_nlri_ff = -1;
static gint ett_bgp_tunnel_tlv = -1;
static gint ett_bgp_tunnel_tlv_subtree = -1;
static gint ett_bgp_tunnel_subtlv = -1;
static gint ett_bgp_tunnel_subtlv_subtree = -1;
static gint ett_bgp_link_state = -1;
static gint ett_bgp_evpn_nlri = -1;
static gint ett_bgp_evpn_nlri_esi = -1;
static gint ett_bgp_mpls_labels = -1;
static gint ett_bgp_pmsi_tunnel_id = -1;
static gint ett_bgp_aigp_attr = -1;
static expert_field ei_bgp_cap_len_bad = EI_INIT;
static expert_field ei_bgp_cap_gr_helper_mode_only = EI_INIT;
static expert_field ei_bgp_notify_minor_unknown = EI_INIT;
static expert_field ei_bgp_route_refresh_orf_type_unknown = EI_INIT;
static expert_field ei_bgp_length_invalid = EI_INIT;
static expert_field ei_bgp_prefix_length_invalid = EI_INIT;
static expert_field ei_bgp_afi_type_not_supported = EI_INIT;
static expert_field ei_bgp_unknown_afi = EI_INIT;
static expert_field ei_bgp_unknown_safi = EI_INIT;
static expert_field ei_bgp_unknown_label_vpn = EI_INIT;
static expert_field ei_bgp_ls_error = EI_INIT;
static expert_field ei_bgp_ext_com_len_bad = EI_INIT;
static expert_field ei_bgp_attr_pmsi_opaque_type = EI_INIT;
static expert_field ei_bgp_attr_pmsi_tunnel_type = EI_INIT;
static expert_field ei_bgp_prefix_length_err = EI_INIT;
static expert_field ei_bgp_attr_aigp_type = EI_INIT;
static expert_field ei_bgp_attr_as_path_as_len_err = EI_INIT;
static expert_field ei_bgp_evpn_nlri_rt4_no_ip = EI_INIT;
static expert_field ei_bgp_evpn_nlri_rt4_len_err = EI_INIT;
static expert_field ei_bgp_evpn_nlri_rt_type_err = EI_INIT;
static expert_field ei_bgp_evpn_nlri_esi_type_err = EI_INIT;
/* desegmentation */
static gboolean bgp_desegment = TRUE;
static gint bgp_asn_len = 0;
/*
* Detect IPv4 prefixes conform to BGP Additional Path but NOT conform to standard BGP
*
* A real BGP speaker would rely on the BGP Additional Path in the BGP Open messages.
* But it is not suitable for a packet analyse because the BGP sessions are not supposed to
* restart very often, and Open messages from both sides of the session would be needed
* to determine the result of the capability negociation.
* Code inspired from the decode_prefix4 function
*/
static int
detect_add_path_prefix4(tvbuff_t *tvb, gint offset, gint end) {
guint32 addr_len;
guint8 prefix_len;
gint o;
/* Must be compatible with BGP Additional Path */
for (o = offset + 4; o < end; o += 4) {
prefix_len = tvb_get_guint8(tvb, o);
if( prefix_len > 32) {
return 0; /* invalid prefix length - not BGP add-path */
}
addr_len = (prefix_len + 7) / 8;
o += 1 + addr_len;
if( o > end ) {
return 0; /* invalid offset - not BGP add-path */
}
if (prefix_len % 8) {
/* detect bits set after the end of the prefix */
if( tvb_get_guint8(tvb, o - 1 ) & (0xFF >> (prefix_len % 8)) ) {
return 0; /* invalid prefix content - not BGP add-path */
}
}
}
/* Must NOT be compatible with standard BGP */
for (o = offset; o < end; ) {
prefix_len = tvb_get_guint8(tvb, o);
if( prefix_len == 0) {
return 1; /* prefix length is zero (i.e. matching all IP prefixes) and remaining bytes within the NLRI is greater than or equal to 1 - may be BGP add-path */
}
if( prefix_len > 32) {
return 1; /* invalid prefix length - may be BGP add-path */
}
addr_len = (prefix_len + 7) / 8;
o += 1 + addr_len;
if( o > end ) {
return 1; /* invalid offset - may be BGP add-path */
}
if (prefix_len % 8) {
/* detect bits set after the end of the prefix */
if( tvb_get_guint8(tvb, o - 1 ) & (0xFF >> (prefix_len % 8)) ) {
return 1; /* invalid prefix content - may be BGP add-path (or a bug) */
}
}
}
return 0; /* valid - do not assume Additional Path */
}
/*
* Decode an IPv4 prefix with Path Identifier
* Code inspired from the decode_prefix4 function
*/
static int
decode_path_prefix4(proto_tree *tree, packet_info *pinfo, int hf_path_id, int hf_addr, tvbuff_t *tvb, gint offset,
const char *tag)
{
proto_tree *prefix_tree;
union {
guint8 addr_bytes[4];
guint32 addr;
} ip_addr; /* IP address */
guint8 plen; /* prefix length */
int length; /* number of octets needed for prefix */
guint32 path_identifier;
address addr;
/* snarf path identifier length and prefix */
path_identifier = tvb_get_ntohl(tvb, offset);
plen = tvb_get_guint8(tvb, offset + 4);
length = tvb_get_ipv4_addr_with_prefix_len(tvb, offset + 4 + 1, ip_addr.addr_bytes, plen);
if (length < 0) {
proto_tree_add_expert_format(tree, pinfo, &ei_bgp_length_invalid, tvb, offset + 4 , 1, "%s length %u invalid (> 32)",
tag, plen);
return -1;
}
/* put prefix into protocol tree */
set_address(&addr, AT_IPv4, 4, ip_addr.addr_bytes);
prefix_tree = proto_tree_add_subtree_format(tree, tvb, offset, 4 + 1 + length,
ett_bgp_prefix, NULL, "%s/%u PathId %u ",
address_to_str(wmem_packet_scope(), &addr), plen, path_identifier);
proto_tree_add_item(prefix_tree, hf_path_id, tvb, offset, 4, ENC_BIG_ENDIAN);
proto_tree_add_item(prefix_tree, hf_bgp_prefix_length, tvb, offset + 4, 1, ENC_BIG_ENDIAN);
proto_tree_add_ipv4(prefix_tree, hf_addr, tvb, offset + 4 + 1, length, ip_addr.addr);
return(4 + 1 + length);
}
/*
* Decode an IPv4 prefix.
*/
static int
decode_prefix4(proto_tree *tree, packet_info *pinfo, proto_item *parent_item, int hf_addr, tvbuff_t *tvb, gint offset,
guint16 tlen, const char *tag)
{
proto_tree *prefix_tree;
union {
guint8 addr_bytes[4];
guint32 addr;
} ip_addr; /* IP address */
guint8 plen; /* prefix length */
int length; /* number of octets needed for prefix */
address addr;
/* snarf length and prefix */
plen = tvb_get_guint8(tvb, offset);
length = tvb_get_ipv4_addr_with_prefix_len(tvb, offset + 1, ip_addr.addr_bytes, plen);
if (length < 0) {
proto_tree_add_expert_format(tree, pinfo, &ei_bgp_length_invalid, tvb, offset, 1, "%s length %u invalid (> 32)",
tag, plen);
return -1;
}
/* put prefix into protocol tree */
set_address(&addr, AT_IPv4, 4, ip_addr.addr_bytes);
prefix_tree = proto_tree_add_subtree_format(tree, tvb, offset,
tlen != 0 ? tlen : 1 + length, ett_bgp_prefix, NULL,
"%s/%u", address_to_str(wmem_packet_scope(), &addr), plen);
proto_item_append_text(parent_item, " (%s/%u)",
address_to_str(wmem_packet_scope(), &addr), plen);
proto_tree_add_uint_format(prefix_tree, hf_bgp_prefix_length, tvb, offset, 1, plen, "%s prefix length: %u",
tag, plen);
proto_tree_add_ipv4(prefix_tree, hf_addr, tvb, offset + 1, length,
ip_addr.addr);
return(1 + length);
}
/*
* Decode an IPv6 prefix.
*/
static int
decode_prefix6(proto_tree *tree, packet_info *pinfo, int hf_addr, tvbuff_t *tvb, gint offset,
guint16 tlen, const char *tag)
{
proto_tree *prefix_tree;
struct e_in6_addr addr; /* IPv6 address */
address addr_str;
int plen; /* prefix length */
int length; /* number of octets needed for prefix */
/* snarf length and prefix */
plen = tvb_get_guint8(tvb, offset);
length = tvb_get_ipv6_addr_with_prefix_len(tvb, offset + 1, &addr, plen);
if (length < 0) {
proto_tree_add_expert_format(tree, pinfo, &ei_bgp_length_invalid, tvb, offset, 1, "%s length %u invalid",
tag, plen);
return -1;
}
/* put prefix into protocol tree */
set_address(&addr_str, AT_IPv6, 16, addr.bytes);
prefix_tree = proto_tree_add_subtree_format(tree, tvb, offset,
tlen != 0 ? tlen : 1 + length, ett_bgp_prefix, NULL, "%s/%u",
address_to_str(wmem_packet_scope(), &addr_str), plen);
proto_tree_add_uint_format(prefix_tree, hf_bgp_prefix_length, tvb, offset, 1, plen, "%s prefix length: %u",
tag, plen);
proto_tree_add_ipv6(prefix_tree, hf_addr, tvb, offset + 1, length, &addr);
return(1 + length);
}
static int
decode_fspec_match_prefix6(proto_tree *tree, proto_item *parent_item, int hf_addr,
tvbuff_t *tvb, gint offset, guint16 tlen, packet_info *pinfo)
{
proto_tree *prefix_tree;
struct e_in6_addr addr; /* IPv6 address */
address addr_str;
int plen; /* prefix length */
int length; /* number of octets needed for prefix */
int poffset_place = 1;
int plength_place = 0;
/* snarf length and prefix */
plen = tvb_get_guint8(tvb, offset);
if (plen == 0) /* I should be facing a draft 04 version where the prefix offset is switched with length */
{
plen = tvb_get_guint8(tvb, offset+1);
poffset_place = 0;
plength_place = 1;
}
length = tvb_get_ipv6_addr_with_prefix_len(tvb, offset + 2, &addr, plen);
if (length < 0) {
expert_add_info_format(pinfo, parent_item, &ei_bgp_prefix_length_err, "Length is invalid %u", plen);
return -1;
}
/* put prefix into protocol tree */
set_address(&addr_str, AT_IPv6, 16, addr.bytes);
prefix_tree = proto_tree_add_subtree_format(tree, tvb, offset,
tlen != 0 ? tlen : 1 + length, ett_bgp_prefix, NULL, "%s/%u",
address_to_str(wmem_packet_scope(), &addr_str), plen);
proto_tree_add_item(prefix_tree, hf_bgp_flowspec_nlri_ipv6_pref_len, tvb, offset + plength_place, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(prefix_tree, hf_bgp_flowspec_nlri_ipv6_pref_offset, tvb, offset + poffset_place, 1, ENC_BIG_ENDIAN);
proto_tree_add_ipv6(prefix_tree, hf_addr, tvb, offset + 2, length, &addr);
if (parent_item != NULL)
proto_item_append_text(parent_item, " (%s/%u)",
address_to_str(wmem_packet_scope(), &addr_str), plen);
return(2 + length);
}
const char*
decode_bgp_rd(tvbuff_t *tvb, gint offset)
{
guint16 rd_type;
wmem_strbuf_t *strbuf;
rd_type = tvb_get_ntohs(tvb,offset);
strbuf = wmem_strbuf_new_label(wmem_packet_scope());
switch (rd_type) {
case FORMAT_AS2_LOC:
wmem_strbuf_append_printf(strbuf, "%u:%u", tvb_get_ntohs(tvb, offset + 2),
tvb_get_ntohl(tvb, offset + 4));
break;
case FORMAT_IP_LOC:
wmem_strbuf_append_printf(strbuf, "%s:%u", tvb_ip_to_str(tvb, offset + 2),
tvb_get_ntohs(tvb, offset + 6));
break ;
case FORMAT_AS4_LOC:
wmem_strbuf_append_printf(strbuf, "%u:%u", tvb_get_ntohl(tvb, offset + 2),
tvb_get_ntohs(tvb, offset + 6));
break ;
default:
wmem_strbuf_append_printf(strbuf, "Unknown (0x%04x) RD type",rd_type);
break;
} /* switch (rd_type) */
return wmem_strbuf_get_str(strbuf);
}
static int
decode_mcast_vpn_nlri_addresses(proto_tree *tree, tvbuff_t *tvb,
gint offset)
{
guint8 addr_len;
/* Multicast Source Address */
proto_tree_add_item(tree, hf_bgp_mcast_vpn_nlri_source_length, tvb, offset,
1, ENC_BIG_ENDIAN);
addr_len = tvb_get_guint8(tvb, offset);
if (addr_len != 32 && addr_len != 128)
return -1;
offset++;
if (addr_len == 32) {
proto_tree_add_item(tree, hf_bgp_mcast_vpn_nlri_source_addr_ipv4, tvb,
offset, 4, ENC_BIG_ENDIAN);
offset += 4;
} else {
proto_tree_add_item(tree, hf_bgp_mcast_vpn_nlri_source_addr_ipv6, tvb,
offset, 16, ENC_NA);
offset += 16;
}
/* Multicast Group Address */
proto_tree_add_item(tree, hf_bgp_mcast_vpn_nlri_group_length, tvb, offset,
1, ENC_BIG_ENDIAN);
addr_len = tvb_get_guint8(tvb, offset);
if (addr_len != 32 && addr_len != 128)
return -1;
offset++;
if (addr_len == 32) {
proto_tree_add_item(tree, hf_bgp_mcast_vpn_nlri_group_addr_ipv4, tvb,
offset, 4, ENC_BIG_ENDIAN);
offset += 4;
} else {
proto_tree_add_item(tree, hf_bgp_mcast_vpn_nlri_group_addr_ipv6, tvb,
offset, 16, ENC_NA);
offset += 16;
}
return offset;
}
/*
* function to decode operator in BGP flow spec NLRI when it address decimal values (TCP ports, UDP ports, ports, ...)
*/
static void
decode_bgp_flow_spec_dec_operator(proto_tree *tree, tvbuff_t *tvb, gint offset)
{
static const int * flags[] = {
&hf_bgp_flowspec_nlri_op_eol,
&hf_bgp_flowspec_nlri_op_and,
&hf_bgp_flowspec_nlri_op_val_len,
&hf_bgp_flowspec_nlri_op_un_bit4,
&hf_bgp_flowspec_nlri_op_lt,
&hf_bgp_flowspec_nlri_op_gt,
&hf_bgp_flowspec_nlri_op_eq,
NULL
};
proto_tree_add_bitmask(tree, tvb, offset, hf_bgp_flowspec_nlri_op_flags, ett_bgp_flow_spec_nlri_op_flags, flags, ENC_NA);
}
/*
* Decode an operator and decimal values of BGP flow spec NLRI
*/
static int
decode_bgp_nlri_op_dec_value(proto_tree *parent_tree, proto_item *parent_item, tvbuff_t *tvb, gint offset)
{
guint8 nlri_operator;
guint cursor_op_val=0;
guint8 value_len=0;
guint value=0;
guint8 shift_amount=0;
guint first_loop=0;
proto_item_append_text(parent_item," (");
do {
nlri_operator = tvb_get_guint8(tvb, offset+cursor_op_val);
shift_amount = nlri_operator&0x30;
shift_amount = shift_amount >> 4;
value_len = 1 << shift_amount; /* as written in RFC 5575 section 4 */
/* call to a operator decode function */
decode_bgp_flow_spec_dec_operator(parent_tree, tvb, offset+cursor_op_val);
if (first_loop == 0)
{
/* If first operator we remoe a white space and or (||) is not relevant */
/* BGP flow spec NLRI operator bitmask */
proto_item_append_text(parent_item,"%s%s%s%s",
((nlri_operator & BGPNLRI_FSPEC_AND_BIT) == 0) ? "" : "&& ",
((nlri_operator & BGPNLRI_FSPEC_GREATER_THAN) == 0) ? "" : ">",
((nlri_operator & BGPNLRI_FSPEC_LESS_THAN) == 0) ? "" : "<",
((nlri_operator & BGPNLRI_FSPEC_EQUAL) == 0) ? "" : "=");
first_loop = 1;
}
else
{
proto_item_append_text(parent_item," %s%s%s%s",
((nlri_operator & BGPNLRI_FSPEC_AND_BIT) == 0) ? "|| " : "&& ",
((nlri_operator & BGPNLRI_FSPEC_GREATER_THAN) == 0) ? "" : ">",
((nlri_operator & BGPNLRI_FSPEC_LESS_THAN) == 0) ? "" : "<",
((nlri_operator & BGPNLRI_FSPEC_EQUAL) == 0) ? "" : "=");
}
cursor_op_val++; /* we manage this operator we move to the value */
switch (value_len) {
case 1:
proto_tree_add_item(parent_tree, hf_bgp_flowspec_nlri_dec_val_8, tvb, offset+cursor_op_val, 1,ENC_BIG_ENDIAN);
value = tvb_get_guint8(tvb,offset+cursor_op_val);
break;
case 2:
proto_tree_add_item(parent_tree, hf_bgp_flowspec_nlri_dec_val_16, tvb, offset+cursor_op_val, 2,ENC_BIG_ENDIAN);
value = tvb_get_ntohs(tvb,offset+cursor_op_val);
break;
case 3:
proto_tree_add_item(parent_tree, hf_bgp_flowspec_nlri_dec_val_32, tvb, offset+cursor_op_val, 4, ENC_BIG_ENDIAN);
value = tvb_get_ntohl(tvb,offset+cursor_op_val);
break;
case 4:
proto_tree_add_item(parent_tree, hf_bgp_flowspec_nlri_dec_val_64, tvb, offset+cursor_op_val, 8, ENC_BIG_ENDIAN);
break;
default:
return -1;
}
cursor_op_val = cursor_op_val + value_len;
proto_item_append_text(parent_item,"%u", value);
} while ((nlri_operator&BGPNLRI_FSPEC_END_OF_LST) == 0);
proto_item_append_text(parent_item,")");
return (cursor_op_val);
}
/*
* function to decode operator in BGP flow spec NLRI when it address a bitmask values (TCP flags, fragmentation flags,...)
*/
static void
decode_bgp_flow_spec_bitmask_operator(proto_tree *tree, tvbuff_t *tvb, gint offset)
{
static const int * flags[] = {
&hf_bgp_flowspec_nlri_op_eol,
&hf_bgp_flowspec_nlri_op_and,
&hf_bgp_flowspec_nlri_op_val_len,
&hf_bgp_flowspec_nlri_op_un_bit4,
&hf_bgp_flowspec_nlri_op_un_bit5,
&hf_bgp_flowspec_nlri_op_flg_not,
&hf_bgp_flowspec_nlri_op_flg_match,
NULL
};
proto_tree_add_bitmask(tree, tvb, offset, hf_bgp_flowspec_nlri_op_flags, ett_bgp_flow_spec_nlri_op_flags, flags, ENC_NA);
}
/*
* Decode an operator and tcp flags bitmask of BGP flow spec NLRI
*/
static int
decode_bgp_nlri_op_tcpf_value(proto_tree *parent_tree, proto_item *parent_item, tvbuff_t *tvb, gint offset)
{
guint8 nlri_operator;
guint8 tcp_flags;
guint cursor_op_val=0;
guint8 value_len=0;
guint8 shift_amount=0;
guint first_loop=0;
static const int * nlri_tcp_flags[] = {
&hf_bgp_flowspec_nlri_tcp_flags_cwr,
&hf_bgp_flowspec_nlri_tcp_flags_ecn,
&hf_bgp_flowspec_nlri_tcp_flags_urg,
&hf_bgp_flowspec_nlri_tcp_flags_ack,
&hf_bgp_flowspec_nlri_tcp_flags_push,
&hf_bgp_flowspec_nlri_tcp_flags_reset,
&hf_bgp_flowspec_nlri_tcp_flags_syn,
&hf_bgp_flowspec_nlri_tcp_flags_fin,
NULL
};
proto_item_append_text(parent_item," (");
do {
nlri_operator = tvb_get_guint8(tvb, offset+cursor_op_val);
shift_amount = nlri_operator&0x30;
shift_amount = shift_amount >> 4;
value_len = 1 << shift_amount; /* as written in RFC 5575 section 4 */
decode_bgp_flow_spec_bitmask_operator(parent_tree, tvb, offset+cursor_op_val); /* call to a operator decode function */
if (first_loop == 0)
{
/* If first operator we remove a white space and or (||) is not relevant */
proto_item_append_text(parent_item,"%s%s%s%s",
((nlri_operator & BGPNLRI_FSPEC_AND_BIT) == 0) ? "" : "&& ",
((nlri_operator & BGPNLRI_FSPEC_GREATER_THAN) == 0) ? "" : ">",
((nlri_operator & BGPNLRI_FSPEC_LESS_THAN) == 0) ? "" : "<",
((nlri_operator & BGPNLRI_FSPEC_EQUAL) == 0) ? "" : "=");
first_loop = 1;
}
else
{
proto_item_append_text(parent_item," %s%s%s%s",
((nlri_operator & BGPNLRI_FSPEC_AND_BIT) == 0) ? "|| " : "&& ",
((nlri_operator & BGPNLRI_FSPEC_GREATER_THAN) == 0) ? "" : ">",
((nlri_operator & BGPNLRI_FSPEC_LESS_THAN) == 0) ? "" : "<",
((nlri_operator & BGPNLRI_FSPEC_EQUAL) == 0) ? "" : "=");
}
cursor_op_val++; /* we manage this operator we move to the value */
if (value_len == 2) {
cursor_op_val++; /* tcp flags are coded over 2 bytes only the second one is significant, we move to second byte */
}
proto_tree_add_bitmask(parent_tree, tvb, offset+cursor_op_val, hf_bgp_flowspec_nlri_tcp_flags, ett_bgp_flow_spec_nlri_tcp, nlri_tcp_flags, ENC_NA);
tcp_flags = tvb_get_guint8(tvb,offset+cursor_op_val);
proto_item_append_text(parent_item," %s%s%s%s%s%s",
((tcp_flags & BGPNLRI_FSPEC_TH_URG) == 0) ? "" : "U",
((tcp_flags & BGPNLRI_FSPEC_TH_ACK) == 0) ? "" : "A",
((tcp_flags & BGPNLRI_FSPEC_TH_PUSH) == 0) ? "" : "P",
((tcp_flags & BGPNLRI_FSPEC_TH_RST) == 0) ? "" : "R",
((tcp_flags & BGPNLRI_FSPEC_TH_SYN) == 0) ? "" : "S",
((tcp_flags & BGPNLRI_FSPEC_TH_FIN) == 0) ? "" : "F");
cursor_op_val = cursor_op_val + value_len;
} while ((nlri_operator&BGPNLRI_FSPEC_END_OF_LST) == 0);
proto_item_append_text(parent_item,")");
return (cursor_op_val);
}
/*
* Decode an operator and fragmentation bitmask of BGP flow spec NLRI
*/
static int
decode_bgp_nlri_op_fflag_value(proto_tree *parent_tree, proto_item *parent_item, tvbuff_t *tvb, gint offset)
{
guint8 nlri_operator;
guint8 fragment_flags;
guint cursor_op_val=0;
guint8 value_len=0;
guint8 shift_amount=0;
guint first_loop=0;
static const int * nlri_flags[] = {
&hf_bgp_flowspec_nlri_fflag_lf,
&hf_bgp_flowspec_nlri_fflag_ff,
&hf_bgp_flowspec_nlri_fflag_isf,
&hf_bgp_flowspec_nlri_fflag_df,
NULL
};
proto_item_append_text(parent_item," (");
do {
nlri_operator = tvb_get_guint8(tvb, offset+cursor_op_val);
shift_amount = nlri_operator&0x30;
shift_amount = shift_amount >> 4;
value_len = 1 << shift_amount; /* as written in RFC 5575 section 4 */
/* call a function to decode operator addressing bitmaks */
decode_bgp_flow_spec_bitmask_operator(parent_tree, tvb, offset+cursor_op_val);
if (first_loop == 0)
{
/* If first operator we remove a white space and or (||) is not relevant */
proto_item_append_text(parent_item,"%s%s%s%s",
((nlri_operator & BGPNLRI_FSPEC_AND_BIT) == 0) ? "" : "&& ",
((nlri_operator & BGPNLRI_FSPEC_GREATER_THAN) == 0) ? "" : ">",
((nlri_operator & BGPNLRI_FSPEC_LESS_THAN) == 0) ? "" : "<",
((nlri_operator & BGPNLRI_FSPEC_EQUAL) == 0) ? "" : "=");
first_loop = 1;
}
else
{
proto_item_append_text(parent_item," %s%s%s%s",
((nlri_operator & BGPNLRI_FSPEC_AND_BIT) == 0) ? "|| " : "&& ",
((nlri_operator & BGPNLRI_FSPEC_GREATER_THAN) == 0) ? "" : ">",
((nlri_operator & BGPNLRI_FSPEC_LESS_THAN) == 0) ? "" : "<",
((nlri_operator & BGPNLRI_FSPEC_EQUAL) == 0) ? "" : "=");
}
cursor_op_val++; /* we manage this operator we move to the value */
if (value_len != 1) {
return -1; /* frag flags have to be coded in 1 byte */
}
fragment_flags = tvb_get_guint8(tvb,offset+cursor_op_val);
proto_tree_add_bitmask(parent_tree, tvb, offset+cursor_op_val, hf_bgp_flowspec_nlri_fflag, ett_bgp_flow_spec_nlri_ff, nlri_flags, ENC_NA);
proto_item_append_text(parent_item," %s%s%s%s",
((fragment_flags & BGPNLRI_FSPEC_FG_DF) == 0) ? "" : "DF",
((fragment_flags & BGPNLRI_FSPEC_FG_ISF) == 0) ? "" : "IsF",
((fragment_flags & BGPNLRI_FSPEC_FG_FF) == 0) ? "" : "FF",
((fragment_flags & BGPNLRI_FSPEC_FG_LF) == 0) ? "" : "LF");
cursor_op_val = cursor_op_val + value_len;
} while ((nlri_operator&BGPNLRI_FSPEC_END_OF_LST) == 0);
proto_item_append_text(parent_item,")");
return (cursor_op_val);
}
/*
* Decode an operator and DSCP value of BGP flow spec NLRI
*/
static int
decode_bgp_nlri_op_dscp_value(proto_tree *parent_tree, proto_item *parent_item, tvbuff_t *tvb, gint offset)
{
guint8 nlri_operator;
guint8 dscp_flags;
guint cursor_op_val=0;
guint8 value_len=0;
guint8 shift_amount=0;
guint first_loop=0;
proto_item_append_text(parent_item," (");
do {
nlri_operator = tvb_get_guint8(tvb, offset+cursor_op_val);
shift_amount = nlri_operator&0x30;
shift_amount = shift_amount >> 4;
value_len = 1 << shift_amount; /* as written in RFC 5575 section 4 */
/* call a function to decode operator addressing bitmaks */
decode_bgp_flow_spec_bitmask_operator(parent_tree, tvb, offset+cursor_op_val);
if (first_loop == 0)
{
/* If first operator we remove a white space and or (||) is not relevant */
proto_item_append_text(parent_item,"%s%s%s%s",
((nlri_operator & BGPNLRI_FSPEC_AND_BIT) == 0) ? "" : "&& ",
((nlri_operator & BGPNLRI_FSPEC_GREATER_THAN) == 0) ? "" : ">",
((nlri_operator & BGPNLRI_FSPEC_LESS_THAN) == 0) ? "" : "<",
((nlri_operator & BGPNLRI_FSPEC_EQUAL) == 0) ? "" : "=");
first_loop = 1;
}
else
{
proto_item_append_text(parent_item," %s%s%s%s",
((nlri_operator & BGPNLRI_FSPEC_AND_BIT) == 0) ? "|| " : "&& ",
((nlri_operator & BGPNLRI_FSPEC_GREATER_THAN) == 0) ? "" : ">",
((nlri_operator & BGPNLRI_FSPEC_LESS_THAN) == 0) ? "" : "<",
((nlri_operator & BGPNLRI_FSPEC_EQUAL) == 0) ? "" : "=");
}
cursor_op_val++; /* we manage this operator we move to the value */
if (value_len != 1) {
return -1; /* frag flags have to be coded in 1 byte */
}
dscp_flags = tvb_get_guint8(tvb,offset+cursor_op_val);
proto_tree_add_item(parent_tree, hf_bgp_flowspec_nlri_dscp, tvb, offset+cursor_op_val, 1, ENC_BIG_ENDIAN);
proto_item_append_text(parent_item,"%s",val_to_str_ext_const(dscp_flags,&dscp_vals_ext, "Unknown DSCP"));
cursor_op_val = cursor_op_val + value_len;
} while ((nlri_operator&BGPNLRI_FSPEC_END_OF_LST) == 0);
proto_item_append_text(parent_item,")");
return (cursor_op_val);
}
/*
* Decode an FLOWSPEC nlri as define in RFC 5575
*/
static int
decode_flowspec_nlri(proto_tree *tree, tvbuff_t *tvb, gint offset, guint16 afi, packet_info *pinfo)
{
guint tot_flow_len; /* total length of the flow spec NLRI */
guint offset_len; /* offset of the flow spec NLRI itself could be 1 or 2 bytes */
guint cursor_fspec; /* cursor to move into flow spec nlri */
gint filter_len = -1;
guint16 len_16;
proto_item *item;
proto_item *filter_item;
proto_tree *nlri_tree;
proto_tree *filter_tree;
if (afi != AFNUM_INET && afi != AFNUM_INET6)
{
expert_add_info(pinfo, NULL, &ei_bgp_afi_type_not_supported);
return(-1);
}
tot_flow_len = tvb_get_guint8(tvb, offset);
/* if nlri length is greater than 240 bytes, it is encoded over 2 bytes */
/* with most significant nibble all in one. 240 is encoded 0xf0f0, 241 0xf0f1 */
/* max possible value value is 4095 Oxffff */
if (tot_flow_len >= 240)
{
len_16 = tvb_get_ntohs(tvb, offset);
tot_flow_len = len_16 >> 4; /* move 4 bits to the right to remove first f */
offset_len = 2;
} else {
offset_len = 1;
}
item = proto_tree_add_item(tree, hf_bgp_flowspec_nlri_t, tvb, offset,
tot_flow_len+offset_len, ENC_NA);
proto_item_set_text(item, "FLOW_SPEC_NLRI (%u byte%s)",
tot_flow_len+offset_len, plurality(tot_flow_len+offset_len, "", "s"));
nlri_tree = proto_item_add_subtree(item, ett_bgp_flow_spec_nlri);
proto_tree_add_uint(nlri_tree, hf_bgp_flowspec_nlri_length, tvb, offset,
offset_len, tot_flow_len);
offset = offset + offset_len;
cursor_fspec = 0;
while (cursor_fspec < tot_flow_len)
{
filter_item = proto_tree_add_item(nlri_tree, hf_bgp_flowspec_nlri_filter, tvb, offset+cursor_fspec, 1, ENC_NA);
filter_tree = proto_item_add_subtree(filter_item, ett_bgp_flow_spec_nlri_filter);
proto_tree_add_item(filter_tree, hf_bgp_flowspec_nlri_filter_type, tvb, offset+cursor_fspec, 1, ENC_BIG_ENDIAN);
proto_item_append_text(filter_item, ": %s", val_to_str(tvb_get_guint8(tvb,offset+cursor_fspec), flowspec_nlri_opvaluepair_type, "Unknown filter %d"));
switch (tvb_get_guint8(tvb,offset+cursor_fspec)) {
case BGPNLRI_FSPEC_DST_PFIX:
cursor_fspec++;
if (afi == AFNUM_INET)
filter_len = decode_prefix4(filter_tree, pinfo, filter_item, hf_bgp_flowspec_nlri_dst_pref_ipv4,
tvb, offset+cursor_fspec, 0, "Destination IP filter");
else if (afi == AFNUM_INET6)
filter_len = decode_fspec_match_prefix6(filter_tree, filter_item, hf_bgp_flowspec_nlri_dst_ipv6_pref,
tvb, offset+cursor_fspec, 0, pinfo);
else cursor_fspec = tot_flow_len;
if (filter_len == -1)
cursor_fspec= tot_flow_len;
break;
case BGPNLRI_FSPEC_SRC_PFIX:
cursor_fspec++;
if (afi == AFNUM_INET)
filter_len = decode_prefix4(filter_tree, pinfo, filter_item, hf_bgp_flowspec_nlri_src_pref_ipv4,
tvb, offset+cursor_fspec, 0, "Source IP filter");
else if (afi == AFNUM_INET6)
filter_len = decode_fspec_match_prefix6(filter_tree, filter_item, hf_bgp_flowspec_nlri_src_ipv6_pref,
tvb, offset+cursor_fspec, 0, pinfo);
else cursor_fspec = tot_flow_len;
if (filter_len == -1)
cursor_fspec= tot_flow_len;
break;
case BGPNLRI_FSPEC_IP_PROTO:
cursor_fspec++;
filter_len = decode_bgp_nlri_op_dec_value(filter_tree, filter_item, tvb, offset+cursor_fspec);
break;
case BGPNLRI_FSPEC_PORT:
cursor_fspec++;
filter_len = decode_bgp_nlri_op_dec_value(filter_tree, filter_item, tvb, offset+cursor_fspec);
break;
case BGPNLRI_FSPEC_DST_PORT:
cursor_fspec++;
filter_len = decode_bgp_nlri_op_dec_value(filter_tree, filter_item, tvb, offset+cursor_fspec);
break;
case BGPNLRI_FSPEC_SRC_PORT:
cursor_fspec++;
filter_len = decode_bgp_nlri_op_dec_value(filter_tree, filter_item, tvb, offset+cursor_fspec);
break;
case BGPNLRI_FSPEC_ICMP_TP:
cursor_fspec++;
filter_len = decode_bgp_nlri_op_dec_value(filter_tree, filter_item, tvb, offset+cursor_fspec);
break;
case BGPNLRI_FSPEC_ICMP_CD:
cursor_fspec++;
filter_len = decode_bgp_nlri_op_dec_value(filter_tree, filter_item, tvb, offset+cursor_fspec);
break;
case BGPNLRI_FSPEC_TCP_FLAGS:
cursor_fspec++;
filter_len = decode_bgp_nlri_op_tcpf_value(filter_tree, filter_item, tvb, offset+cursor_fspec);
break;
case BGPNLRI_FSPEC_PCK_LEN:
cursor_fspec++;
filter_len = decode_bgp_nlri_op_dec_value(filter_tree, filter_item, tvb, offset+cursor_fspec);
break;
case BGPNLRI_FSPEC_DSCP:
cursor_fspec++;
filter_len = decode_bgp_nlri_op_dscp_value(filter_tree, filter_item, tvb, offset+cursor_fspec);
break;
case BGPNLRI_FSPEC_FRAGMENT:
cursor_fspec++;
filter_len = decode_bgp_nlri_op_fflag_value(filter_tree, filter_item, tvb, offset+cursor_fspec);
break;
default:
return -1;
}
if (filter_len>0)
cursor_fspec += filter_len;
else
break;
proto_item_set_len(filter_item,filter_len+1);
}
return(tot_flow_len);
}
/*
* Decode an MCAST-VPN nlri as defined in draft-ietf-l3vpn-2547bis-mcast-bgp-08.txt .
*/
static int
decode_mcast_vpn_nlri(proto_tree *tree, tvbuff_t *tvb, gint offset, guint16 afi)
{
guint8 route_type, length, ip_length;
proto_item *item;
proto_tree *nlri_tree;
guint32 route_key_length;
int ret;
ip_length = (afi == AFNUM_INET) ? 4 : 16;
route_type = tvb_get_guint8(tvb, offset);
proto_tree_add_item(tree, hf_bgp_mcast_vpn_nlri_route_type, tvb,
offset, 1, ENC_BIG_ENDIAN);
offset++;
length = tvb_get_guint8(tvb, offset);
proto_tree_add_item(tree, hf_bgp_mcast_vpn_nlri_length, tvb, offset,
1, ENC_BIG_ENDIAN);
offset++;
if (length < tvb_reported_length_remaining(tvb, offset))
return -1;
item = proto_tree_add_item(tree, hf_bgp_mcast_vpn_nlri_t, tvb, offset,
length, ENC_NA);
proto_item_set_text(item, "%s (%u byte%s)",
val_to_str_const(route_type, mcast_vpn_route_type, "Unknown"),
length, plurality(length, "", "s"));
nlri_tree = proto_item_add_subtree(item, ett_bgp_mcast_vpn_nlri);
switch (route_type) {
case MCAST_VPN_RTYPE_INTRA_AS_IPMSI_AD:
item = proto_tree_add_item(nlri_tree, hf_bgp_mcast_vpn_nlri_rd, tvb,
offset, BGP_ROUTE_DISTINGUISHER_SIZE,
ENC_NA);
proto_item_set_text(item, "Route Distinguisher: %s",
decode_bgp_rd(tvb, offset));
offset += BGP_ROUTE_DISTINGUISHER_SIZE;
if (afi == AFNUM_INET)
proto_tree_add_item(nlri_tree,
hf_bgp_mcast_vpn_nlri_origin_router_ipv4,
tvb, offset, ip_length, ENC_BIG_ENDIAN);
else
proto_tree_add_item(nlri_tree,
hf_bgp_mcast_vpn_nlri_origin_router_ipv6,
tvb, offset, ip_length, ENC_NA);
break;
case MCAST_VPN_RTYPE_INTER_AS_IPMSI_AD:
item = proto_tree_add_item(nlri_tree, hf_bgp_mcast_vpn_nlri_rd, tvb,
offset, BGP_ROUTE_DISTINGUISHER_SIZE,
ENC_NA);
proto_item_set_text(item, "Route Distinguisher: %s",
decode_bgp_rd(tvb, offset));
offset += BGP_ROUTE_DISTINGUISHER_SIZE;
proto_tree_add_item(nlri_tree, hf_bgp_mcast_vpn_nlri_source_as, tvb,
offset, 4, ENC_BIG_ENDIAN);
break;
case MCAST_VPN_RTYPE_SPMSI_AD:
item = proto_tree_add_item(nlri_tree, hf_bgp_mcast_vpn_nlri_rd, tvb,
offset, BGP_ROUTE_DISTINGUISHER_SIZE,
ENC_NA);
proto_item_set_text(item, "Route Distinguisher: %s",
decode_bgp_rd(tvb, offset));
offset += BGP_ROUTE_DISTINGUISHER_SIZE;
ret = decode_mcast_vpn_nlri_addresses(nlri_tree, tvb, offset);
if (ret < 0)
return -1;
break;
case MCAST_VPN_RTYPE_LEAF_AD:
route_key_length = length - ip_length;
item = proto_tree_add_item(nlri_tree,
hf_bgp_mcast_vpn_nlri_route_key, tvb,
offset, route_key_length, ENC_NA);
proto_item_set_text(item, "Route Key (%u byte%s)", route_key_length,
plurality(route_key_length, "", "s"));
offset += route_key_length;
if (afi == AFNUM_INET)
proto_tree_add_item(nlri_tree,
hf_bgp_mcast_vpn_nlri_origin_router_ipv4,
tvb, offset, ip_length, ENC_BIG_ENDIAN);
else
proto_tree_add_item(nlri_tree,
hf_bgp_mcast_vpn_nlri_origin_router_ipv6,
tvb, offset, ip_length, ENC_NA);
break;
case MCAST_VPN_RTYPE_SOURCE_ACTIVE_AD:
item = proto_tree_add_item(nlri_tree, hf_bgp_mcast_vpn_nlri_rd, tvb,
offset, BGP_ROUTE_DISTINGUISHER_SIZE,
ENC_NA);
proto_item_set_text(item, "Route Distinguisher: %s",
decode_bgp_rd(tvb, offset));
offset += BGP_ROUTE_DISTINGUISHER_SIZE;
ret = decode_mcast_vpn_nlri_addresses(nlri_tree, tvb, offset);
if (ret < 0)
return -1;
break;
case MCAST_VPN_RTYPE_SHARED_TREE_JOIN:
case MCAST_VPN_RTYPE_SOURCE_TREE_JOIN:
item = proto_tree_add_item(nlri_tree, hf_bgp_mcast_vpn_nlri_rd, tvb,
offset, BGP_ROUTE_DISTINGUISHER_SIZE,
ENC_NA);
proto_item_set_text(item, "Route Distinguisher: %s",
decode_bgp_rd(tvb, offset));
offset += BGP_ROUTE_DISTINGUISHER_SIZE;
proto_tree_add_item(nlri_tree, hf_bgp_mcast_vpn_nlri_source_as, tvb,
offset, 4, ENC_BIG_ENDIAN);
offset += 4;
ret = decode_mcast_vpn_nlri_addresses(nlri_tree, tvb, offset);
if (ret < 0)
return -1;
break;
}
/* route type field (1 byte) + length field (1 byte) + length */
return 2 + length;
}
/*
* Decodes an MDT-SAFI message.
*/
static guint
decode_mdt_safi(proto_tree *tree, tvbuff_t *tvb, gint offset)
{
const guint ip_length = 4;
const guint mdt_safi_nlri_length_bits = 128;
guint length; /* length in bits */
gint orig_offset = offset;
proto_item *item;
length = tvb_get_guint8(tvb, offset);
if (length != mdt_safi_nlri_length_bits)
return -1;
offset++;
item = proto_tree_add_item(tree, hf_bgp_mdt_nlri_safi_rd, tvb,
offset, BGP_ROUTE_DISTINGUISHER_SIZE, ENC_NA);
proto_item_set_text(item, "Route Distinguisher: %s",
decode_bgp_rd(tvb, offset));
offset += BGP_ROUTE_DISTINGUISHER_SIZE;
proto_tree_add_item(tree, hf_bgp_mdt_nlri_safi_ipv4_addr, tvb,
offset, ip_length, ENC_BIG_ENDIAN);
offset += ip_length;
proto_tree_add_item(tree, hf_bgp_mdt_nlri_safi_group_addr, tvb,
offset, ip_length, ENC_BIG_ENDIAN);
offset += ip_length;
return offset - orig_offset;
}
/*
* Decode an MPLS label stack
* XXX - We should change *buf to **buf, use wmem_alloc() and drop the buflen
* argument.
*/
static guint
decode_MPLS_stack(tvbuff_t *tvb, gint offset, wmem_strbuf_t *stack_strbuf)
{
guint32 label_entry; /* an MPLS label entry (label + COS field + stack bit */
gint indx; /* index for the label stack */
indx = offset ;
label_entry = 0x000000 ;
wmem_strbuf_truncate(stack_strbuf, 0);
while ((label_entry & BGP_MPLS_BOTTOM_L_STACK) == 0) {
label_entry = tvb_get_ntoh24(tvb, indx) ;
/* withdrawn routes may contain 0 or 0x800000 in the first label */
if((indx == offset)&&(label_entry==0||label_entry==0x800000)) {
wmem_strbuf_append(stack_strbuf, "0 (withdrawn)");
return (1);
}
wmem_strbuf_append_printf(stack_strbuf, "%u%s", label_entry >> 4,
((label_entry & BGP_MPLS_BOTTOM_L_STACK) == 0) ? "," : " (bottom)");
indx += 3 ;
if ((label_entry & BGP_MPLS_BOTTOM_L_STACK) == 0) {
/* real MPLS multi-label stack in BGP? - maybe later; for now, it must be a bogus packet */
wmem_strbuf_append(stack_strbuf, " (BOGUS: Bottom of Stack NOT set!)");
break;
}
}
return((indx - offset) / 3);
}
static guint
decode_MPLS_stack_tree(tvbuff_t *tvb, gint offset, proto_tree *parent_tree)
{
guint32 label_entry=0; /* an MPLS label entry (label + COS field + stack bit) */
gint indx; /* index for the label stack */
proto_tree *labels_tree=NULL;
proto_item *labels_item=NULL;
proto_item *label_item=NULL;
indx = offset ;
label_entry = 0x000000 ;
labels_item = proto_tree_add_item(parent_tree, hf_bgp_update_mpls_label, tvb, offset, 3, ENC_NA);
proto_item_append_text(labels_item, ": ");
labels_tree = proto_item_add_subtree(labels_item, ett_bgp_mpls_labels);
while ((label_entry & BGP_MPLS_BOTTOM_L_STACK) == 0) {
label_entry = tvb_get_ntoh24(tvb, indx);
label_item = proto_tree_add_item(labels_tree, hf_bgp_update_mpls_label_value, tvb, indx, 3, ENC_BIG_ENDIAN);
/* withdrawn routes may contain 0 or 0x800000 in the first label */
if((indx == offset)&&(label_entry==0||label_entry==0x800000)) {
proto_item_append_text(labels_item, " (withdrawn)");
proto_item_append_text(label_item, " (withdrawn)");
return (1);
}
proto_item_append_text(labels_item, "%u%s", label_entry >> 4,
((label_entry & BGP_MPLS_BOTTOM_L_STACK) == 0) ? "," : " (bottom)");
proto_item_append_text(label_item, "%u%s", label_entry >> 4,
((label_entry & BGP_MPLS_BOTTOM_L_STACK) == 0) ? "," : " (bottom)");
indx += 3 ;
if ((label_entry & BGP_MPLS_BOTTOM_L_STACK) == 0) {
/* real MPLS multi-label stack in BGP? - maybe later; for now, it must be a bogus packet */
proto_item_append_text(labels_item, " (BOGUS: Bottom of Stack NOT set!)");
break;
}
}
proto_item_set_len(labels_item, (indx - offset));
return((indx - offset) / 3);
}
/*
* Decode a multiprotocol address
*/
static int
mp_addr_to_str (guint16 afi, guint8 safi, tvbuff_t *tvb, gint offset, wmem_strbuf_t *strbuf, gint nhlen)
{
int length; /* length of the address in byte */
guint16 rd_type; /* Route Distinguisher type */
switch (afi) {
case AFNUM_INET:
switch (safi) {
case SAFNUM_UNICAST:
case SAFNUM_MULCAST:
case SAFNUM_UNIMULC:
case SAFNUM_MPLS_LABEL:
case SAFNUM_ENCAPSULATION:
case SAFNUM_ROUTE_TARGET:
/* RTF NHop can be IPv4 or IPv6. They are differentiated by length of the field*/
length = nhlen;
if (nhlen == 4) {
wmem_strbuf_append(strbuf, tvb_ip_to_str(tvb, offset));
} else if (nhlen == 16) {
wmem_strbuf_append(strbuf, tvb_ip6_to_str(tvb, offset));
} else {
wmem_strbuf_append(strbuf, "Unknown address");
}
break;
case SAFNUM_TUNNEL:
length = 4;
wmem_strbuf_append(strbuf, tvb_ip_to_str(tvb, offset));
break;
case SAFNUM_LAB_VPNUNICAST:
case SAFNUM_LAB_VPNMULCAST:
case SAFNUM_LAB_VPNUNIMULC:
rd_type=tvb_get_ntohs(tvb,offset) ;
wmem_strbuf_truncate(strbuf, 0);
switch (rd_type) {
case FORMAT_AS2_LOC:
length = 12;
wmem_strbuf_append_printf(strbuf, "Empty Label Stack RD=%u:%u IPv4=%s",
tvb_get_ntohs(tvb, offset + 2),
tvb_get_ntohl(tvb, offset + 4),
tvb_ip_to_str(tvb, offset + 8)); /* Next Hop */
break;
case FORMAT_IP_LOC:
length = 12;
wmem_strbuf_append_printf(strbuf, "Empty Label Stack RD=%s:%u IPv4=%s",
tvb_ip_to_str(tvb, offset + 2), /* IP part of the RD */
tvb_get_ntohs(tvb, offset + 6),
tvb_ip_to_str(tvb, offset + 8)); /* Next Hop */
break ;
case FORMAT_AS4_LOC:
length = 12;
wmem_strbuf_append_printf(strbuf, "Empty Label Stack RD=%u.%u:%u IPv4=%s",
tvb_get_ntohs(tvb, offset + 2),
tvb_get_ntohs(tvb, offset + 4),
tvb_get_ntohs(tvb, offset + 6),
tvb_ip_to_str(tvb, offset + 8)); /* Next Hop */
break ;
default:
length = 0 ;
wmem_strbuf_append_printf(strbuf, "Unknown (0x%04x) labeled VPN IPv4 address format",rd_type);
break;
} /* switch (rd_type) */
break;
default:
length = 0 ;
wmem_strbuf_truncate(strbuf, 0);
wmem_strbuf_append_printf(strbuf, "Unknown SAFI (%u) for AFI %u", safi, afi);
break;
} /* switch (safi) */
break;
case AFNUM_INET6:
wmem_strbuf_truncate(strbuf, 0);
switch (safi) {
case SAFNUM_UNICAST:
case SAFNUM_MULCAST:
case SAFNUM_UNIMULC:
case SAFNUM_MPLS_LABEL:
case SAFNUM_ENCAPSULATION:
case SAFNUM_TUNNEL:
length = 16;
wmem_strbuf_append_printf(strbuf, "%s", tvb_ip6_to_str(tvb, offset));
break;
case SAFNUM_LAB_VPNUNICAST:
case SAFNUM_LAB_VPNMULCAST:
case SAFNUM_LAB_VPNUNIMULC:
rd_type=tvb_get_ntohs(tvb,offset) ;
switch (rd_type) {
case FORMAT_AS2_LOC:
length = 8 + 16;
wmem_strbuf_append_printf(strbuf, "Empty Label Stack RD=%u:%u IPv6=%s",
tvb_get_ntohs(tvb, offset + 2),
tvb_get_ntohl(tvb, offset + 4),
tvb_ip6_to_str(tvb, offset + 8)); /* Next Hop */
break;
case FORMAT_IP_LOC:
length = 8 + 16;
wmem_strbuf_append_printf(strbuf, "Empty Label Stack RD=%s:%u IPv6=%s",
tvb_ip_to_str(tvb, offset + 2), /* IP part of the RD */
tvb_get_ntohs(tvb, offset + 6),
tvb_ip6_to_str(tvb, offset + 8)); /* Next Hop */
break ;
case FORMAT_AS4_LOC:
length = 8 + 16;
wmem_strbuf_append_printf(strbuf, "Empty Label Stack RD=%u:%u IPv6=%s",
tvb_get_ntohl(tvb, offset + 2),
tvb_get_ntohs(tvb, offset + 6),
tvb_ip6_to_str(tvb, offset + 8)); /* Next Hop */
break ;
default:
length = 0 ;
wmem_strbuf_append_printf(strbuf, "Unknown (0x%04x) labeled VPN IPv6 address format",rd_type);
break;
} /* switch (rd_type) */
break;
default:
length = 0 ;
wmem_strbuf_append_printf(strbuf, "Unknown SAFI (%u) for AFI %u", safi, afi);
break;
} /* switch (safi) */
break;
case AFNUM_L2VPN:
case AFNUM_L2VPN_OLD:
wmem_strbuf_truncate(strbuf, 0);
switch (safi) {
case SAFNUM_LAB_VPNUNICAST: /* only labeles prefixes do make sense */
case SAFNUM_LAB_VPNMULCAST:
case SAFNUM_LAB_VPNUNIMULC:
case SAFNUM_VPLS:
length = 4; /* the next-hop is simply an ipv4 addr */
wmem_strbuf_append_printf(strbuf, "IPv4=%s",
tvb_ip_to_str(tvb, offset));
break;
default:
length = 0 ;
wmem_strbuf_append_printf(strbuf, "Unknown SAFI (%u) for AFI %u", safi, afi);
break;
} /* switch (safi) */
break;
case AFNUM_LINK_STATE:
length = nhlen;
if (nhlen == 4) {
wmem_strbuf_append(strbuf, tvb_ip_to_str(tvb, offset));
} else if (nhlen == 16) {
wmem_strbuf_append(strbuf, tvb_ip6_to_str(tvb, offset));
} else {
wmem_strbuf_append(strbuf, "Unknown address");
}
break;
default:
length = 0 ;
wmem_strbuf_truncate(strbuf, 0);
wmem_strbuf_append_printf(strbuf, "Unknown AFI (%u) value", afi);
break;
} /* switch (afi) */
return(length) ;
}
static int decode_bgp_link_node_descriptor(tvbuff_t *tvb, proto_tree *tree, gint offset, packet_info *pinfo, int length)
{
guint16 sub_length;
guint16 type;
guint16 diss_length;
proto_item* tlv_item;
proto_tree* tlv_tree;
diss_length = 0;
while (length > 0 ) {
if (length < 4) {
expert_add_info_format(pinfo, tree, &ei_bgp_ls_error,
"Unknown data in Link-State Link NLRI!");
diss_length += length;
break;
}
type = tvb_get_ntohs(tvb, offset);
sub_length = tvb_get_ntohs(tvb, offset + 2);
switch (type) {
case BGP_NLRI_TLV_AUTONOMOUS_SYSTEM:
tlv_item = proto_tree_add_item(tree, hf_bgp_ls_tlv_autonomous_system, tvb, offset, sub_length+4, ENC_NA);
tlv_tree = proto_item_add_subtree(tlv_item, ett_bgp_mp_reach_nlri);
proto_tree_add_item(tlv_tree, hf_bgp_ls_type, tvb, offset, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_bgp_ls_length, tvb, offset + 2, 2, ENC_BIG_ENDIAN);
if (sub_length != BGP_NLRI_TLV_LEN_AUTONOMOUS_SYSTEM) {
expert_add_info_format(pinfo, tree, &ei_bgp_ls_error,
"Autonomous system TLV length should be %u bytes! (%u)",
BGP_NLRI_TLV_LEN_AUTONOMOUS_SYSTEM, sub_length);
break;
}
proto_tree_add_item(tlv_tree, hf_bgp_ls_tlv_autonomous_system_id, tvb, offset + 4, 4, ENC_BIG_ENDIAN);
break;
case BGP_NLRI_TLV_BGP_LS_IDENTIFIER:
tlv_item = proto_tree_add_item(tree, hf_bgp_ls_tlv_bgp_ls_identifier, tvb, offset, sub_length+4, ENC_NA);
tlv_tree = proto_item_add_subtree(tlv_item, ett_bgp_mp_reach_nlri);
proto_tree_add_item(tlv_tree, hf_bgp_ls_type, tvb, offset, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_bgp_ls_length, tvb, offset + 2, 2, ENC_BIG_ENDIAN);
if (sub_length != BGP_NLRI_TLV_LEN_BGP_LS_IDENTIFIER) {
expert_add_info_format(pinfo, tree, &ei_bgp_ls_error,
"BGP-LS TLV length should be %u bytes! (%u)",
BGP_NLRI_TLV_LEN_BGP_LS_IDENTIFIER, sub_length);
break;
}
proto_tree_add_item(tlv_tree, hf_bgp_ls_tlv_bgp_ls_identifier_id, tvb, offset + 4, 4, ENC_BIG_ENDIAN);
break;
case BGP_NLRI_TLV_AREA_ID:
tlv_item = proto_tree_add_item(tree, hf_bgp_ls_tlv_area_id, tvb, offset, sub_length+4, ENC_NA);
tlv_tree = proto_item_add_subtree(tlv_item, ett_bgp_mp_reach_nlri);
proto_tree_add_item(tlv_tree, hf_bgp_ls_type, tvb, offset, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_bgp_ls_length, tvb, offset + 2, 2, ENC_BIG_ENDIAN);
if (sub_length != BGP_NLRI_TLV_LEN_AREA_ID) {
expert_add_info_format(pinfo, tree, &ei_bgp_ls_error,
"Area ID TLV length should be %u bytes! (%u)",
BGP_NLRI_TLV_LEN_AREA_ID, sub_length);
break;
}
proto_tree_add_item(tlv_tree, hf_bgp_ls_tlv_area_id_id, tvb, offset + 4, 4, ENC_BIG_ENDIAN);
break;
case BGP_NLRI_TLV_IGP_ROUTER_ID:
tlv_item = proto_tree_add_item(tree, hf_bgp_ls_tlv_igp_router, tvb, offset, sub_length+4, ENC_NA);
tlv_tree = proto_item_add_subtree(tlv_item, ett_bgp_mp_reach_nlri);
proto_tree_add_item(tlv_tree, hf_bgp_ls_type, tvb, offset, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_bgp_ls_length, tvb, offset + 2, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_bgp_ls_tlv_igp_router_id, tvb, offset + 4, sub_length, ENC_NA);
break;
default:
expert_add_info_format(pinfo, tree, &ei_bgp_ls_error, "Undefined node Descriptor Sub-TLV type (%u)!", type);
}
length -= 4 + sub_length;
offset += 4 + sub_length;
diss_length += 4 + sub_length;
}
return diss_length;
}
/*
* Decode BGP Link State Local and Remote NODE Descriptors
*/
static int decode_bgp_link_node_nlri_tlvs(tvbuff_t *tvb, proto_tree *tree, gint offset, packet_info *pinfo, guint16 expected_sub_tlv)
{
guint16 length;
guint16 type;
proto_tree* tlv_tree;
proto_item* tlv_item;
type = tvb_get_ntohs(tvb, offset);
length = tvb_get_ntohs(tvb, offset + 2);
if (expected_sub_tlv != type) {
expert_add_info_format(pinfo, tree, &ei_bgp_ls_error, "Expected/actual tlv mismatch, expected: %u, actual: %u", expected_sub_tlv, type);
}
switch(type){
/*local and remote node descriptors */
case BGP_NLRI_TLV_LOCAL_NODE_DESCRIPTORS:
tlv_item = proto_tree_add_item(tree, hf_bgp_ls_tlv_local_node_descriptors, tvb, offset, length+4, ENC_NA);
tlv_tree = proto_item_add_subtree(tlv_item, ett_bgp_mp_reach_nlri);
proto_tree_add_item(tlv_tree, hf_bgp_ls_type, tvb, offset, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_bgp_ls_length, tvb, offset + 2, 2, ENC_BIG_ENDIAN);
decode_bgp_link_node_descriptor(tvb, tlv_tree, offset + 4, pinfo, length);
break;
case BGP_NLRI_TLV_REMOTE_NODE_DESCRIPTORS:
tlv_item = proto_tree_add_item(tree, hf_bgp_ls_tlv_remote_node_descriptors, tvb, offset, length+4, ENC_NA);
tlv_tree = proto_item_add_subtree(tlv_item, ett_bgp_mp_reach_nlri);
proto_tree_add_item(tlv_tree, hf_bgp_ls_type, tvb, offset, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_bgp_ls_length, tvb, offset + 2, 2, ENC_BIG_ENDIAN);
decode_bgp_link_node_descriptor(tvb, tlv_tree, offset + 4, pinfo, length);
break;
}
return length +4 ;
}
/*
* Dissect Link and Node NLRI common fields (Protocol-ID, Identifier, Local Node Desc.)
*/
static int decode_bgp_link_node_nlri_common_fields(tvbuff_t *tvb,
proto_tree *tree, gint offset, packet_info *pinfo, int length) {
int dissected_length;
int tmp_length;
/* dissect Link NLRI header */
if (length < 12) {
expert_add_info_format(pinfo, tree, &ei_bgp_ls_error,
"Link State NLRI length is lower than 12 bytes! (%d)", length);
return length;
}
proto_tree_add_item(tree, hf_bgp_ls_nlri_node_protocol_id, tvb, offset, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(tree, hf_bgp_ls_nlri_node_identifier, tvb, offset + 1, 8, ENC_BIG_ENDIAN);
dissected_length = 9;
offset += dissected_length;
length -= dissected_length;
/* dissect Local Node Descriptors TLV */
if (length > 0 && length < 4) {
expert_add_info_format(pinfo, tree, &ei_bgp_ls_error,
"Unknown data in Link-State Link NLRI! length = %d bytes", length);
return dissected_length;
}
if (length < 1)
return dissected_length;
tmp_length = decode_bgp_link_node_nlri_tlvs(tvb, tree, offset, pinfo,
BGP_NLRI_TLV_LOCAL_NODE_DESCRIPTORS);
if (tmp_length < 0) {
return -1;
}
dissected_length += tmp_length;
return dissected_length;
}
/*
* Decode Link Descriptors
*/
static int decode_bgp_link_nlri_link_descriptors(tvbuff_t *tvb,
proto_tree *tree, gint offset, packet_info *pinfo, int length) {
guint16 sub_length;
guint16 type;
guint16 diss_length;
guint16 tmp16;
proto_item* tlv_item;
proto_tree* tlv_tree;
proto_item* tlv_sub_item;
proto_tree* tlv_sub_tree;
tlv_item = proto_tree_add_item(tree, hf_bgp_ls_nlri_link_descriptors_tlv, tvb, offset, length + 4, ENC_NA);
tlv_tree = proto_item_add_subtree(tlv_item, ett_bgp_mp_reach_nlri);
diss_length = 0;
while (length > 0) {
if (length < 4) {
expert_add_info_format(pinfo, tree, &ei_bgp_ls_error,
"Unknown data in Link-State Link NLRI!");
diss_length += length;
break;
}
type = tvb_get_ntohs(tvb, offset);
sub_length = tvb_get_ntohs(tvb, offset + 2);
switch (type) {
case BGP_NLRI_TLV_LINK_LOCAL_REMOTE_IDENTIFIERS:
if(sub_length != BGP_NLRI_TLV_LEN_LINK_LOCAL_REMOTE_IDENTIFIERS){
expert_add_info_format(pinfo, tlv_tree, &ei_bgp_ls_error,
"Unexpected Link Local/Remote Identifiers TLV's length (%u), it must be %u bytes!",
sub_length, BGP_NLRI_TLV_LEN_LINK_LOCAL_REMOTE_IDENTIFIERS);
return -1;
}
tlv_sub_item = proto_tree_add_item(tlv_tree,
hf_bgp_ls_tlv_link_local_remote_identifiers, tvb, offset,
sub_length + 4, ENC_NA);
tlv_sub_tree = proto_item_add_subtree(tlv_sub_item, ett_bgp_mp_reach_nlri);
break;
case BGP_NLRI_TLV_IPV4_INTERFACE_ADDRESS:
if(sub_length != BGP_NLRI_TLV_LEN_IPV4_INTERFACE_ADDRESS){
expert_add_info_format(pinfo, tlv_tree, &ei_bgp_ls_error,
"Unexpected IPv4 Interface Address TLV's length (%u), it must be %u bytes!",
sub_length, BGP_NLRI_TLV_LEN_IPV4_INTERFACE_ADDRESS);
return -1;
}
tlv_sub_item = proto_tree_add_item(tlv_tree,
hf_bgp_ls_tlv_ipv4_interface_address, tvb, offset,
sub_length + 4, ENC_NA);
tlv_sub_tree = proto_item_add_subtree(tlv_sub_item, ett_bgp_mp_reach_nlri);
break;
case BGP_NLRI_TLV_IPV4_NEIGHBOR_ADDRESS:
if(sub_length != BGP_NLRI_TLV_LEN_IPV4_NEIGHBOR_ADDRESS){
expert_add_info_format(pinfo, tlv_tree, &ei_bgp_ls_error,
"Unexpected IPv4 Neighbor Address TLV's length (%u), it must be %u bytes!",
sub_length, BGP_NLRI_TLV_LEN_IPV4_NEIGHBOR_ADDRESS);
return -1;
}
tlv_sub_item = proto_tree_add_item(tlv_tree,
hf_bgp_ls_tlv_ipv4_neighbor_address, tvb, offset,
sub_length + 4, ENC_NA);
tlv_sub_tree = proto_item_add_subtree(tlv_sub_item, ett_bgp_mp_reach_nlri);
break;
case BGP_NLRI_TLV_IPV6_INTERFACE_ADDRESS:
if(sub_length != BGP_NLRI_TLV_LEN_IPV6_INTERFACE_ADDRESS){
expert_add_info_format(pinfo, tlv_tree, &ei_bgp_ls_error,
"Unexpected IPv6 Interface Address TLV's length (%u), it must be %u bytes!",
sub_length, BGP_NLRI_TLV_LEN_IPV6_INTERFACE_ADDRESS);
return -1;
}
tlv_sub_item = proto_tree_add_item(tlv_tree,
hf_bgp_ls_tlv_ipv6_interface_address, tvb, offset,
sub_length + 4, ENC_NA);
tlv_sub_tree = proto_item_add_subtree(tlv_sub_item, ett_bgp_mp_reach_nlri);
break;
case BGP_NLRI_TLV_IPV6_NEIGHBOR_ADDRESS:
if(sub_length != BGP_NLRI_TLV_IPV6_NEIGHBOR_ADDRESS){
expert_add_info_format(pinfo, tlv_tree, &ei_bgp_ls_error,
"Unexpected IPv6 Neighbor Address TLV's length (%u), it must be %u bytes!",
sub_length, BGP_NLRI_TLV_IPV6_NEIGHBOR_ADDRESS);
return -1;
}
tlv_sub_item = proto_tree_add_item(tlv_tree,
hf_bgp_ls_tlv_ipv6_neighbor_address, tvb, offset,
sub_length + 4, ENC_NA);
tlv_sub_tree = proto_item_add_subtree(tlv_sub_item, ett_bgp_mp_reach_nlri);
break;
case BGP_NLRI_TLV_MULTI_TOPOLOGY_ID:
if(sub_length != BGP_NLRI_TLV_LEN_MULTI_TOPOLOGY_ID){
expert_add_info_format(pinfo, tlv_tree, &ei_bgp_ls_error,
"Unexpected Multi Topology ID TLV's length (%u), it must be %u bytes!",
sub_length, BGP_NLRI_TLV_LEN_MULTI_TOPOLOGY_ID);
return -1;
}
tlv_sub_item = proto_tree_add_item(tlv_tree,
hf_bgp_ls_tlv_multi_topology_id, tvb, offset, sub_length + 4,
ENC_NA);
tlv_sub_tree = proto_item_add_subtree(tlv_sub_item, ett_bgp_mp_reach_nlri);
break;
default:
expert_add_info_format(pinfo, tlv_tree, &ei_bgp_ls_error,
"Unknown Link Descriptor TLV Code (%u)!", type);
return -1;
}
proto_tree_add_item(tlv_sub_tree, hf_bgp_ls_type, tvb, offset, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_sub_tree, hf_bgp_ls_length, tvb, offset + 2, 2, ENC_BIG_ENDIAN);
switch (type) {
case BGP_NLRI_TLV_LINK_LOCAL_REMOTE_IDENTIFIERS:
proto_tree_add_item(tlv_sub_tree, hf_bgp_ls_nlri_link_local_identifier, tvb, offset + 4, 4, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_sub_tree, hf_bgp_ls_nlri_link_remote_identifier, tvb, offset + 8, 4, ENC_BIG_ENDIAN);
break;
case BGP_NLRI_TLV_IPV4_INTERFACE_ADDRESS:
proto_tree_add_item(tlv_sub_tree, hf_bgp_ls_nlri_ipv4_interface_address, tvb, offset + 4,
BGP_NLRI_TLV_LEN_IPV4_INTERFACE_ADDRESS, ENC_BIG_ENDIAN);
break;
case BGP_NLRI_TLV_IPV4_NEIGHBOR_ADDRESS:
proto_tree_add_item(tlv_sub_tree, hf_bgp_ls_nlri_ipv4_neighbor_address, tvb, offset + 4,
BGP_NLRI_TLV_LEN_IPV4_INTERFACE_ADDRESS, ENC_BIG_ENDIAN);
break;
case BGP_NLRI_TLV_IPV6_INTERFACE_ADDRESS:
proto_tree_add_item(tlv_sub_tree, hf_bgp_ls_nlri_ipv6_interface_address, tvb, offset + 4,
BGP_NLRI_TLV_LEN_IPV6_INTERFACE_ADDRESS, ENC_NA);
break;
case BGP_NLRI_TLV_IPV6_NEIGHBOR_ADDRESS:
proto_tree_add_item(tlv_sub_tree, hf_bgp_ls_nlri_ipv6_neighbor_address, tvb, offset + 4,
BGP_NLRI_TLV_LEN_IPV6_INTERFACE_ADDRESS, ENC_NA);
break;
case BGP_NLRI_TLV_MULTI_TOPOLOGY_ID:
tmp16 = tvb_get_ntohs(tvb, offset + 4);
tmp16 >>= 12;
if(tmp16){
expert_add_info_format(pinfo, tlv_sub_tree, &ei_bgp_ls_error, "Reserved bits of Multi Topology ID must be set to zero! (%u)", tmp16);
}
proto_tree_add_item(tlv_sub_tree, hf_bgp_ls_nlri_multi_topology_id, tvb, offset + 4,
BGP_NLRI_TLV_LEN_MULTI_TOPOLOGY_ID, ENC_BIG_ENDIAN);
break;
}
length -= 4 + sub_length;
offset += 4 + sub_length;
diss_length += 4 + sub_length;
}
return diss_length;
}
/*
* Decode Prefix Descriptors
*/
static int decode_bgp_link_nlri_prefix_descriptors(tvbuff_t *tvb,
proto_tree *tree, gint offset, packet_info *pinfo, int length) {
guint16 sub_length;
guint16 type;
guint16 diss_length;
guint8 tmp8;
guint16 tmp16;
proto_item* tlv_item;
proto_tree* tlv_tree;
proto_item* tlv_sub_item;
proto_tree* tlv_sub_tree;
tlv_item = proto_tree_add_item(tree, hf_bgp_ls_nlri_prefix_descriptors_tlv, tvb, offset, length + 4, ENC_NA);
tlv_tree = proto_item_add_subtree(tlv_item, ett_bgp_mp_reach_nlri);
diss_length = 0;
while (length > 0) {
if (length < 4) {
expert_add_info_format(pinfo, tree, &ei_bgp_ls_error,
"Unknown data in Link-State Link NLRI!");
diss_length += length;
break;
}
type = tvb_get_ntohs(tvb, offset);
sub_length = tvb_get_ntohs(tvb, offset + 2);
switch (type) {
case BGP_NLRI_TLV_MULTI_TOPOLOGY_ID:
if(sub_length != BGP_NLRI_TLV_LEN_MULTI_TOPOLOGY_ID){
expert_add_info_format(pinfo, tlv_tree, &ei_bgp_ls_error,
"Unexpected Multi Topology ID TLV's length (%u), it must be %u bytes!",
sub_length, BGP_NLRI_TLV_LEN_MULTI_TOPOLOGY_ID);
return -1;
}
tlv_sub_item = proto_tree_add_item(tlv_tree,
hf_bgp_ls_tlv_multi_topology_id, tvb, offset, sub_length + 4,
ENC_NA);
tlv_sub_tree = proto_item_add_subtree(tlv_sub_item, ett_bgp_mp_reach_nlri);
break;
case BGP_NLRI_TLV_OSPF_ROUTE_TYPE:
tlv_sub_item = proto_tree_add_item(tlv_tree,
hf_bgp_ls_tlv_ospf_route_type, tvb, offset, sub_length + 4,
ENC_NA);
tlv_sub_tree = proto_item_add_subtree(tlv_sub_item, ett_bgp_mp_reach_nlri);
break;
case BGP_NLRI_TLV_IP_REACHABILITY_INFORMATION:
tlv_sub_item = proto_tree_add_item(tlv_tree,
hf_bgp_ls_tlv_ip_reachability_information, tvb, offset, sub_length + 4,
ENC_NA);
tlv_sub_tree = proto_item_add_subtree(tlv_sub_item, ett_bgp_mp_reach_nlri);
break;
default:
expert_add_info_format(pinfo, tlv_tree, &ei_bgp_ls_error,
"Unknown Prefix Descriptor TLV Code (%u)!", type);
return -1;
}
proto_tree_add_item(tlv_sub_tree, hf_bgp_ls_type, tvb, offset, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_sub_tree, hf_bgp_ls_length, tvb, offset + 2, 2, ENC_BIG_ENDIAN);
switch (type) {
case BGP_NLRI_TLV_MULTI_TOPOLOGY_ID:
tmp16 = tvb_get_ntohs(tvb, offset + 4);
tmp16 >>= 12;
if(tmp16){
expert_add_info_format(pinfo, tlv_sub_tree, &ei_bgp_ls_error, "Reserved bits of Multi Topology ID must be set to zero! (%u)", tmp16);
}
proto_tree_add_item(tlv_sub_tree, hf_bgp_ls_nlri_multi_topology_id, tvb, offset + 4,
BGP_NLRI_TLV_LEN_MULTI_TOPOLOGY_ID, ENC_BIG_ENDIAN);
break;
case BGP_NLRI_TLV_OSPF_ROUTE_TYPE:
if (sub_length != 1) {
expert_add_info_format(pinfo, tlv_sub_tree, &ei_bgp_ls_error, "OSPF Route Type length must be \"1\"");
break;
}
proto_tree_add_item(tlv_sub_tree, hf_bgp_ls_nlri_ospf_route_type, tvb, offset + 4, 1, ENC_BIG_ENDIAN);
break;
case BGP_NLRI_TLV_IP_REACHABILITY_INFORMATION:
tmp8 = tvb_get_guint8(tvb, offset + 4);
proto_tree_add_item(tlv_sub_tree, hf_bgp_ls_nlri_ip_reachability_prefix_length, tvb, offset + 4, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_sub_tree, hf_bgp_ls_nlri_ip_reachability_prefix_ip, tvb, offset + 5, (tmp8 / 8), ENC_NA);
break;
}
length -= 4 + sub_length;
offset += 4 + sub_length;
diss_length += 4 + sub_length;
}
return diss_length;
}
/*
* Decode a multiprotocol prefix
*/
static int
decode_link_state_attribute_tlv(proto_tree *tree, tvbuff_t *tvb, gint offset, packet_info *pinfo)
{
guint16 type;
guint16 length;
guint8 tmp8;
guint16 tmp16;
guint32 tmp32;
gfloat tmp_float;
guint32 mask;
int n;
proto_item* tlv_item;
proto_tree* tlv_tree;
proto_item* tlv_sub_item;
proto_tree* tlv_sub_tree;
type = tvb_get_ntohs(tvb, offset);
length = tvb_get_ntohs(tvb, offset + 2);
switch (type) {
/* NODE ATTRIBUTE TLVs */
case BGP_NLRI_TLV_MULTI_TOPOLOGY_ID:
tlv_item = proto_tree_add_item(tree, hf_bgp_ls_tlv_multi_topology_id, tvb, offset, length + 4, ENC_NA);
tlv_tree = proto_item_add_subtree(tlv_item, ett_bgp_link_state);
for (n = 0; n < (length / BGP_NLRI_TLV_LEN_MULTI_TOPOLOGY_ID); n++) {
tmp16 = tvb_get_ntohs(tvb, offset + 4 + (n * BGP_NLRI_TLV_LEN_MULTI_TOPOLOGY_ID));
tmp16 >>= 12;
if(tmp16){
expert_add_info_format(pinfo, tlv_tree, &ei_bgp_ls_error, "Reserved bits of Multi Topology ID must be set to zero! (%u)", tmp16);
}
proto_tree_add_item(tlv_tree, hf_bgp_ls_nlri_multi_topology_id, tvb, offset + 4 + (n * BGP_NLRI_TLV_LEN_MULTI_TOPOLOGY_ID),
BGP_NLRI_TLV_LEN_MULTI_TOPOLOGY_ID, ENC_BIG_ENDIAN);
}
break;
case BGP_NLRI_TLV_NODE_FLAG_BITS:
{
static const int * flags[] = {
&hf_bgp_ls_node_flag_bits_overload,
&hf_bgp_ls_node_flag_bits_attached,
&hf_bgp_ls_node_flag_bits_external,
&hf_bgp_ls_node_flag_bits_abr,
NULL
};
tlv_item = proto_tree_add_item(tree, hf_bgp_ls_tlv_node_flags_bits, tvb, offset, length+4, ENC_NA);
tlv_tree = proto_item_add_subtree(tlv_item, ett_bgp_link_state);
if(length != BGP_NLRI_TLV_LEN_NODE_FLAG_BITS){
expert_add_info_format(pinfo, tlv_tree, &ei_bgp_ls_error, "Unexpected Node Flags Bits TLV's length (%u), it must be %u bytes!",
length, BGP_NLRI_TLV_LEN_NODE_FLAG_BITS);
break;
}
proto_tree_add_item(tlv_tree, hf_bgp_ls_type, tvb, offset, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_bgp_ls_length, tvb, offset + 2, 2, ENC_BIG_ENDIAN);
proto_tree_add_bitmask_list(tlv_tree, tvb, offset+4, 1, flags, ENC_NA);
tmp8 = tvb_get_guint8(tvb, offset+4) & 0x0f;
if(tmp8){
expert_add_info_format(pinfo, tlv_tree, &ei_bgp_ls_error, "Reserved flag bits are not set to zero (%u).", tmp8);
}
}
break;
case BGP_NLRI_TLV_OPAQUE_NODE_PROPERTIES:
tlv_item = proto_tree_add_item(tree, hf_bgp_ls_tlv_opaque_node_properties, tvb, offset, length+4, ENC_NA);
tlv_tree = proto_item_add_subtree(tlv_item, ett_bgp_link_state);
proto_tree_add_item(tlv_tree, hf_bgp_ls_type, tvb, offset, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_bgp_ls_length, tvb, offset + 2, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_bgp_ls_tlv_opaque_node_properties_value, tvb, offset + 4, length, ENC_NA);
break;
case BGP_NLRI_TLV_NODE_NAME:
tlv_item = proto_tree_add_item(tree, hf_bgp_ls_tlv_node_name, tvb, offset, length+4, ENC_NA);
tlv_tree = proto_item_add_subtree(tlv_item, ett_bgp_link_state);
proto_tree_add_item(tlv_tree, hf_bgp_ls_type, tvb, offset, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_bgp_ls_length, tvb, offset + 2, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_bgp_ls_tlv_node_name_value, tvb, offset + 4, length, ENC_ASCII|ENC_NA);
break;
case BGP_NLRI_TLV_IS_IS_AREA_IDENTIFIER:
tlv_item = proto_tree_add_item(tree, hf_bgp_ls_tlv_is_is_area_identifier, tvb, offset, length+4, ENC_NA);
tlv_tree = proto_item_add_subtree(tlv_item, ett_bgp_link_state);
proto_tree_add_item(tlv_tree, hf_bgp_ls_type, tvb, offset, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_bgp_ls_length, tvb, offset + 2, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_bgp_ls_tlv_is_is_area_identifier_value, tvb, offset + 4, length, ENC_NA);
break;
/* NODE & LINK ATTRIBUTE TLVs */
case BGP_NLRI_TLV_IPV4_ROUTER_ID_OF_LOCAL_NODE:
tlv_item = proto_tree_add_item(tree, hf_bgp_ls_tlv_ipv4_router_id_of_local_node, tvb, offset, length+4, ENC_NA);
tlv_tree = proto_item_add_subtree(tlv_item, ett_bgp_link_state);
proto_tree_add_item(tlv_tree, hf_bgp_ls_type, tvb, offset, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_bgp_ls_length, tvb, offset + 2, 2, ENC_BIG_ENDIAN);
if(length != BGP_NLRI_TLV_LEN_IPV4_ROUTER_ID_OF_LOCAL_NODE){
expert_add_info_format(pinfo, tlv_tree, &ei_bgp_ls_error, "Unexpected IPv4 Router-ID TLV's length (%u), it must be %u bytes!",
length, BGP_NLRI_TLV_LEN_IPV4_ROUTER_ID_OF_LOCAL_NODE);
break;
}
proto_tree_add_item(tlv_tree, hf_bgp_ls_tlv_ipv4_router_id_value, tvb, offset + 4, 4, ENC_BIG_ENDIAN);
break;
case BGP_NLRI_TLV_IPV6_ROUTER_ID_OF_LOCAL_NODE:
tlv_item = proto_tree_add_item(tree, hf_bgp_ls_tlv_ipv6_router_id_of_local_node, tvb, offset, length+4, ENC_NA);
tlv_tree = proto_item_add_subtree(tlv_item, ett_bgp_link_state);
proto_tree_add_item(tlv_tree, hf_bgp_ls_type, tvb, offset, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_bgp_ls_length, tvb, offset + 2, 2, ENC_BIG_ENDIAN);
if(length != BGP_NLRI_TLV_LEN_IPV6_ROUTER_ID_OF_LOCAL_NODE){
expert_add_info_format(pinfo, tlv_tree, &ei_bgp_ls_error, "Unexpected IPv6 Router-ID TLV's length (%u), it must be %u bytes!",
length, BGP_NLRI_TLV_LEN_IPV6_ROUTER_ID_OF_LOCAL_NODE);
break;
}
proto_tree_add_item(tlv_tree, hf_bgp_ls_tlv_ipv6_router_id_value, tvb, offset + 4, BGP_NLRI_TLV_LEN_IPV6_ROUTER_ID_OF_LOCAL_NODE, ENC_NA);
break;
/* Link Attribute TLVs */
case BGP_NLRI_TLV_IPV4_ROUTER_ID_OF_REMOTE_NODE:
tlv_item = proto_tree_add_item(tree, hf_bgp_ls_tlv_ipv4_router_id_of_remote_node, tvb, offset, length+4, ENC_NA);
tlv_tree = proto_item_add_subtree(tlv_item, ett_bgp_link_state);
proto_tree_add_item(tlv_tree, hf_bgp_ls_type, tvb, offset, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_bgp_ls_length, tvb, offset + 2, 2, ENC_BIG_ENDIAN);
if(length != BGP_NLRI_TLV_LEN_IPV4_ROUTER_ID_OF_REMOTE_NODE){
expert_add_info_format(pinfo, tlv_tree, &ei_bgp_ls_error, "Unexpected IPv4 Router-ID TLV's length (%u), it must be %u bytes!",
length, BGP_NLRI_TLV_LEN_IPV4_ROUTER_ID_OF_REMOTE_NODE);
break;
}
proto_tree_add_item(tlv_tree, hf_bgp_ls_tlv_ipv4_router_id_value, tvb, offset + 4, 4, ENC_BIG_ENDIAN);
break;
case BGP_NLRI_TLV_IPV6_ROUTER_ID_OF_REMOTE_NODE:
tlv_item = proto_tree_add_item(tree, hf_bgp_ls_tlv_ipv6_router_id_of_remote_node, tvb, offset, length+4, ENC_NA);
tlv_tree = proto_item_add_subtree(tlv_item, ett_bgp_link_state);
proto_tree_add_item(tlv_tree, hf_bgp_ls_type, tvb, offset, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_bgp_ls_length, tvb, offset + 2, 2, ENC_BIG_ENDIAN);
if(length != BGP_NLRI_TLV_LEN_IPV6_ROUTER_ID_OF_REMOTE_NODE){
expert_add_info_format(pinfo, tlv_tree, &ei_bgp_ls_error, "Unexpected IPv6 Router-ID TLV's length (%u), it must be %u bytes!",
length, BGP_NLRI_TLV_LEN_IPV6_ROUTER_ID_OF_REMOTE_NODE);
break;
}
proto_tree_add_item(tlv_tree, hf_bgp_ls_tlv_ipv6_router_id_value, tvb, offset + 4, BGP_NLRI_TLV_LEN_IPV6_ROUTER_ID_OF_REMOTE_NODE, ENC_NA);
break;
case BGP_NLRI_TLV_ADMINISTRATIVE_GROUP_COLOR:
tlv_item = proto_tree_add_item(tree, hf_bgp_ls_tlv_administrative_group_color, tvb, offset, length+4, ENC_NA);
tlv_tree = proto_item_add_subtree(tlv_item, ett_bgp_link_state);
if(length != BGP_NLRI_TLV_LEN_ADMINISTRATIVE_GROUP_COLOR){
expert_add_info_format(pinfo, tlv_tree, &ei_bgp_ls_error, "Unexpected Administrative group (color) TLV's length (%u), it must be %u bytes!",
length, BGP_NLRI_TLV_LEN_ADMINISTRATIVE_GROUP_COLOR);
break;
}
proto_tree_add_item(tlv_tree, hf_bgp_ls_type, tvb, offset, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_bgp_ls_length, tvb, offset + 2, 2, ENC_BIG_ENDIAN);
tmp32 = tvb_get_ntohl(tvb, offset + 4);
tlv_sub_item = proto_tree_add_item(tlv_tree, hf_bgp_ls_tlv_administrative_group_color_value, tvb, offset + 4, 4, ENC_BIG_ENDIAN);
tlv_sub_tree = proto_item_add_subtree(tlv_sub_item, ett_bgp_prefix);
mask = 1;
for(n = 0; n<32; n++){
if( tmp32 & mask ) proto_tree_add_uint(tlv_sub_tree, hf_bgp_ls_tlv_administrative_group, tvb, offset + 4, 4, n);
mask <<= 1;
}
break;
case BGP_NLRI_TLV_MAX_LINK_BANDWIDTH:
tlv_item = proto_tree_add_item(tree, hf_bgp_ls_tlv_max_link_bandwidth, tvb, offset, length+4, ENC_NA);
tlv_tree = proto_item_add_subtree(tlv_item, ett_bgp_link_state);
if(length != BGP_NLRI_TLV_LEN_MAX_LINK_BANDWIDTH){
expert_add_info_format(pinfo, tlv_tree, &ei_bgp_ls_error, "Unexpected Maximum link bandwidth TLV's length (%u), it must be %u bytes!",
length, BGP_NLRI_TLV_LEN_MAX_LINK_BANDWIDTH);
break;
}
proto_tree_add_item(tlv_tree, hf_bgp_ls_type, tvb, offset, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_bgp_ls_length, tvb, offset + 2, 2, ENC_BIG_ENDIAN);
tmp_float = tvb_get_ntohieee_float(tvb, offset + 4)*8/1000000;
proto_tree_add_float_format(tlv_tree, hf_bgp_ls_bandwidth_value, tvb, offset + 4, 4, tmp_float, "Maximum link bandwidth: %.2f Mbps", tmp_float);
break;
case BGP_NLRI_TLV_MAX_RESERVABLE_LINK_BANDWIDTH:
tlv_item = proto_tree_add_item(tree, hf_bgp_ls_tlv_max_reservable_link_bandwidth, tvb, offset, length+4, ENC_NA);
tlv_tree = proto_item_add_subtree(tlv_item, ett_bgp_link_state);
if(length != BGP_NLRI_TLV_LEN_MAX_RESERVABLE_LINK_BANDWIDTH){
expert_add_info_format(pinfo, tlv_tree, &ei_bgp_ls_error, "Unexpected Maximum reservable link bandwidth TLV's length (%u), it must be %u bytes!",
length, BGP_NLRI_TLV_LEN_MAX_RESERVABLE_LINK_BANDWIDTH);
break;
}
proto_tree_add_item(tlv_tree, hf_bgp_ls_type, tvb, offset, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_bgp_ls_length, tvb, offset + 2, 2, ENC_BIG_ENDIAN);
tmp_float = tvb_get_ntohieee_float(tvb, offset + 4)*8/1000000;
proto_tree_add_float_format(tlv_tree, hf_bgp_ls_bandwidth_value, tvb, offset + 4, 4, tmp_float, "Maximum reservable link bandwidth: %.2f Mbps", tmp_float);
break;
case BGP_NLRI_TLV_UNRESERVED_BANDWIDTH:
tlv_item = proto_tree_add_item(tree, hf_bgp_ls_tlv_unreserved_bandwidth, tvb, offset, length+4, ENC_NA);
tlv_tree = proto_item_add_subtree(tlv_item, ett_bgp_link_state);
if(length != BGP_NLRI_TLV_LEN_UNRESERVED_BANDWIDTH){
expert_add_info_format(pinfo, tlv_tree, &ei_bgp_ls_error, "Unexpected Unreserved bandwidth TLV's length (%u), it must be %u bytes!",
length, BGP_NLRI_TLV_LEN_UNRESERVED_BANDWIDTH);
break;
}
proto_tree_add_item(tlv_tree, hf_bgp_ls_type, tvb, offset, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_bgp_ls_length, tvb, offset + 2, 2, ENC_BIG_ENDIAN);
for(n = 0; n<8; n++){
tmp_float = tvb_get_ntohieee_float(tvb, offset + 4 + (4 * n))*8/1000000;
tlv_sub_item = proto_tree_add_float_format(tlv_tree, hf_bgp_ls_bandwidth_value, tvb, offset + 4 + (4 * n), 4, tmp_float, "Unreserved Bandwidth: %.2f Mbps", tmp_float);
proto_item_prepend_text(tlv_sub_item, "Priority %u, ", n);
}
break;
case BGP_NLRI_TLV_TE_DEFAULT_METRIC:
tlv_item = proto_tree_add_item(tree, hf_bgp_ls_tlv_te_default_metric, tvb, offset, length+4, ENC_NA);
tlv_tree = proto_item_add_subtree(tlv_item, ett_bgp_link_state);
if(length != BGP_NLRI_TLV_LEN_TE_DEFAULT_METRIC){
expert_add_info_format(pinfo, tlv_tree, &ei_bgp_ls_error, "Unexpected Metric TLV's length (%u), it must be %u bytes!",
length, BGP_NLRI_TLV_LEN_METRIC);
break;
}
proto_tree_add_item(tlv_tree, hf_bgp_ls_type, tvb, offset, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_bgp_ls_length, tvb, offset + 2, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_bgp_ls_tlv_te_default_metric_value, tvb, offset + 4, 3, ENC_BIG_ENDIAN);
break;
case BGP_NLRI_TLV_LINK_PROTECTION_TYPE:
tlv_item = proto_tree_add_item(tree, hf_bgp_ls_tlv_link_protection_type, tvb, offset, length+4, ENC_NA);
tlv_tree = proto_item_add_subtree(tlv_item, ett_bgp_link_state);
if(length != BGP_NLRI_TLV_LEN_LINK_PROTECTION_TYPE){
expert_add_info_format(pinfo, tlv_tree, &ei_bgp_ls_error, "Unexpected Link Protection Type TLV's length (%u), it must be %u bytes!",
length, BGP_NLRI_TLV_LEN_LINK_PROTECTION_TYPE);
break;
}
else {
static const int * nlri_flags[] = {
&hf_bgp_ls_link_protection_type_extra_traffic,
&hf_bgp_ls_link_protection_type_unprotected,
&hf_bgp_ls_link_protection_type_shared,
&hf_bgp_ls_link_protection_type_dedicated_1to1,
&hf_bgp_ls_link_protection_type_dedicated_1plus1,
&hf_bgp_ls_link_protection_type_enhanced,
NULL
};
proto_tree_add_item(tlv_tree, hf_bgp_ls_type, tvb, offset, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_bgp_ls_length, tvb, offset + 2, 2, ENC_BIG_ENDIAN);
tmp8 = tvb_get_guint8(tvb, offset + 4);
tlv_sub_item = proto_tree_add_bitmask(tlv_tree, tvb, offset + 4, hf_bgp_ls_tlv_link_protection_type_value, ett_bgp_mp_reach_nlri, nlri_flags, ENC_NA);
tmp8 >>= 6;
if(tmp8){
expert_add_info_format(pinfo, tlv_sub_item, &ei_bgp_ls_error, "Reserved Protection Capabilities bits are not set to zero (%u).", tmp8);
}
tmp8 = tvb_get_guint8(tvb, offset + 4 + 1);
if(tmp8){
expert_add_info_format(pinfo, tlv_tree, &ei_bgp_ls_error, "Reserved field is not set to zero. (%u)", tmp8);
}
}
break;
case BGP_NLRI_TLV_MPLS_PROTOCOL_MASK:
{
static const int * flags[] = {
&hf_bgp_ls_mpls_protocol_mask_flag_l,
&hf_bgp_ls_mpls_protocol_mask_flag_r,
NULL
};
tlv_item = proto_tree_add_item(tree, hf_bgp_ls_tlv_mpls_protocol_mask, tvb, offset, length+4, ENC_NA);
tlv_tree = proto_item_add_subtree(tlv_item, ett_bgp_link_state);
if(length != BGP_NLRI_TLV_LEN_MPLS_PROTOCOL_MASK){
expert_add_info_format(pinfo, tlv_tree, &ei_bgp_ls_error, "Unexpected MPLS Protocol Mask TLV's length (%u), it must be %u bytes!",
length, BGP_NLRI_TLV_LEN_MPLS_PROTOCOL_MASK);
break;
}
proto_tree_add_item(tlv_tree, hf_bgp_ls_type, tvb, offset, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_bgp_ls_length, tvb, offset + 2, 2, ENC_BIG_ENDIAN);
proto_tree_add_bitmask_list(tlv_tree, tvb, offset+4, 1, flags, ENC_NA);
tmp8 = tvb_get_guint8(tvb, offset + 4) & 0x3f;
if(tmp8){
proto_tree_add_expert_format(tlv_tree, pinfo, &ei_bgp_ls_error, tvb, offset + 4, 1,
"Reserved flags are not set to zero (%u).", tmp8);
}
}
break;
case BGP_NLRI_TLV_METRIC:
tlv_item = proto_tree_add_item(tree, hf_bgp_ls_tlv_metric, tvb, offset, length+4, ENC_NA);
tlv_tree = proto_item_add_subtree(tlv_item, ett_bgp_link_state);
if(length != BGP_NLRI_TLV_LEN_METRIC){
expert_add_info_format(pinfo, tlv_tree, &ei_bgp_ls_error, "Unexpected Metric TLV's length (%u), it must be %u bytes!",
length, BGP_NLRI_TLV_LEN_METRIC);
break;
}
proto_tree_add_item(tlv_tree, hf_bgp_ls_type, tvb, offset, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_bgp_ls_length, tvb, offset + 2, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_bgp_ls_tlv_metric_value, tvb, offset + 4, 3, ENC_BIG_ENDIAN);
break;
case BGP_NLRI_TLV_SHARED_RISK_LINK_GROUP:
tlv_item = proto_tree_add_item(tree, hf_bgp_ls_tlv_shared_risk_link_group, tvb, offset, length+4, ENC_NA);
tlv_tree = proto_item_add_subtree(tlv_item, ett_bgp_link_state);
proto_tree_add_item(tlv_tree, hf_bgp_ls_type, tvb, offset, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_bgp_ls_length, tvb, offset + 2, 2, ENC_BIG_ENDIAN);
tmp16 = length;
n = 0;
while(tmp16 > 0){
if(tmp16 < 4) {
proto_tree_add_expert_format(tlv_tree, pinfo, &ei_bgp_ls_error,
tvb, offset + 4 + (n * 4), tmp16,
"Shared Risk Link Group Value must be 4 bytes long (%u).", tmp16);
break;
}
proto_tree_add_item(tlv_tree, hf_bgp_ls_tlv_shared_risk_link_group_value, tvb, offset + 4 + (n * 4), 4, ENC_BIG_ENDIAN);
tmp16 -= 4;
n++;
}
break;
case BGP_NLRI_TLV_OPAQUE_LINK_ATTRIBUTE:
tlv_item = proto_tree_add_item(tree, hf_bgp_ls_tlv_opaque_link_attribute, tvb, offset, length+4, ENC_NA);
tlv_tree = proto_item_add_subtree(tlv_item, ett_bgp_link_state);
proto_tree_add_item(tlv_tree, hf_bgp_ls_type, tvb, offset, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_bgp_ls_length, tvb, offset + 2, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_bgp_ls_tlv_opaque_link_attribute_value, tvb, offset + 4, length, ENC_NA);
break;
case BGP_NLRI_TLV_LINK_NAME_ATTRIBUTE:
tlv_item = proto_tree_add_item(tree, hf_bgp_ls_tlv_link_name_attribute, tvb, offset, length+4, ENC_NA);
tlv_tree = proto_item_add_subtree(tlv_item, ett_bgp_link_state);
proto_tree_add_item(tlv_tree, hf_bgp_ls_type, tvb, offset, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_bgp_ls_length, tvb, offset + 2, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_bgp_ls_tlv_link_name_attribute_value, tvb, offset + 4, length, ENC_ASCII|ENC_NA);
break;
case BGP_NLRI_TLV_IGP_FLAGS:
tlv_item = proto_tree_add_item(tree, hf_bgp_ls_tlv_igp_flags, tvb, offset, length+4, ENC_NA);
tlv_tree = proto_item_add_subtree(tlv_item, ett_bgp_link_state);
if(length != BGP_NLRI_TLV_LEN_IGP_FLAGS){
expert_add_info_format(pinfo, tlv_tree, &ei_bgp_ls_error, "Unexpected IGP Flags TLV's length (%u), it must be %u bytes!",
length, BGP_NLRI_TLV_IGP_FLAGS);
break;
}
proto_tree_add_item(tlv_tree, hf_bgp_ls_type, tvb, offset, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_bgp_ls_length, tvb, offset + 2, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_bgp_ls_igp_flags_flag_d, tvb, offset + 4, 1, ENC_NA);
tmp8 = tvb_get_guint8(tvb, offset + 4) & 0x7F;
if(tmp8){
expert_add_info_format(pinfo, tlv_tree, &ei_bgp_ls_error, "Reserved flags are not set to zero (%u).", tmp8);
}
break;
case BGP_NLRI_TLV_ROUTE_TAG:
tlv_item = proto_tree_add_item(tree, hf_bgp_ls_tlv_route_tag, tvb, offset, length+4, ENC_NA);
tlv_tree = proto_item_add_subtree(tlv_item, ett_bgp_link_state);
if(length % 4 != 0) {
expert_add_info_format(pinfo, tlv_tree, &ei_bgp_ls_error, "Unexpected Route Tag TLV's length (%u mod 4 != 0) ",
length);
break;
}
proto_tree_add_item(tlv_tree, hf_bgp_ls_type, tvb, offset, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_bgp_ls_length, tvb, offset + 2, 2, ENC_BIG_ENDIAN);
tmp16 = length;
n = 0;
while(tmp16){
if(tmp16 < 4) {
expert_add_info_format(pinfo, tlv_tree, &ei_bgp_ls_error, "Route Tag must be 4 bytes long (%u).", tmp16);
break;
}
proto_tree_add_item(tlv_tree, hf_bgp_ls_tlv_route_tag_value, tvb, offset + 4 + (n * 4), 4, ENC_BIG_ENDIAN);
tmp16 -= 4;
n++;
}
break;
case BGP_NLRI_TLV_EXTENDED_TAG:
tlv_item = proto_tree_add_item(tree, hf_bgp_ls_tlv_route_extended_tag, tvb, offset, length+4, ENC_NA);
tlv_tree = proto_item_add_subtree(tlv_item, ett_bgp_link_state);
if(length % 8 != 0) {
expert_add_info_format(pinfo, tlv_tree, &ei_bgp_ls_error, "Unexpected Route Extended Tag TLV's length (%u mod 8 != 0) ",
length);
break;
}
proto_tree_add_item(tlv_tree, hf_bgp_ls_type, tvb, offset, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_bgp_ls_length, tvb, offset + 2, 2, ENC_BIG_ENDIAN);
tmp16 = length;
n = 0;
while(tmp16){
if(tmp16 < 8) {
expert_add_info_format(pinfo, tlv_tree, &ei_bgp_ls_error, "Route Extended Tag must be 8 bytes long (%u).", tmp16);
break;
}
proto_tree_add_item(tlv_tree, hf_bgp_ls_tlv_route_extended_tag_value, tvb, offset + 4 + (n * 8), 8, ENC_BIG_ENDIAN);
tmp16 -= 8;
n++;
}
break;
case BGP_NLRI_TLV_PREFIX_METRIC:
tlv_item = proto_tree_add_item(tree, hf_bgp_ls_tlv_prefix_metric, tvb, offset, length+4, ENC_NA);
tlv_tree = proto_item_add_subtree(tlv_item, ett_bgp_link_state);
if(length != BGP_NLRI_TLV_LEN_PREFIX_METRIC){
expert_add_info_format(pinfo, tlv_tree, &ei_bgp_ls_error, "Unexpected Prefix Metric TLV's length (%u), it must be %u bytes!",
length, BGP_NLRI_TLV_LEN_PREFIX_METRIC);
break;
}
proto_tree_add_item(tlv_tree, hf_bgp_ls_type, tvb, offset, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_bgp_ls_length, tvb, offset + 2, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_bgp_ls_tlv_prefix_metric_value, tvb, offset + 4, 4, ENC_BIG_ENDIAN);
break;
case BGP_NLRI_TLV_OSPF_FORWARDING_ADDRESS:
tlv_item = proto_tree_add_item(tree, hf_bgp_ls_ospf_forwarding_address, tvb, offset, length+4, ENC_NA);
tlv_tree = proto_item_add_subtree(tlv_item, ett_bgp_link_state);
proto_tree_add_item(tlv_tree, hf_bgp_ls_type, tvb, offset, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_bgp_ls_length, tvb, offset + 2, 2, ENC_BIG_ENDIAN);
if (length == 4) {
proto_tree_add_item(tlv_tree, hf_bgp_ls_ospf_forwarding_address_ipv4_address, tvb, offset + 4, length, ENC_BIG_ENDIAN);
}
else if (length == 16) {
proto_tree_add_item(tlv_tree, hf_bgp_ls_ospf_forwarding_address_ipv6_address, tvb, offset + 4, length, ENC_NA);
}
else {
expert_add_info_format(pinfo, tlv_tree, &ei_bgp_ls_error, "Unexpected Prefix Metric TLV's length (%u), it must be 4 or 16 bytes!", length);
break;
}
break;
case BGP_NLRI_TLV_OPAQUE_PREFIX_ATTRIBUTE:
tlv_item = proto_tree_add_item(tree, hf_bgp_ls_opaque_prefix_attribute, tvb, offset, length+4, ENC_NA);
tlv_tree = proto_item_add_subtree(tlv_item, ett_bgp_link_state);
proto_tree_add_item(tlv_tree, hf_bgp_ls_type, tvb, offset, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_bgp_ls_length, tvb, offset + 2, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_bgp_ls_opaque_prefix_attribute_value, tvb, offset + 4, length, ENC_NA);
break;
default:
expert_add_info_format(pinfo, tree, &ei_bgp_ls_error,
"Unknown Prefix Descriptor TLV Code (%u)!", type);
break;
}
return length + 4;
}
static int decode_evpn_nlri_esi(proto_tree *tree, tvbuff_t *tvb, gint offset, packet_info *pinfo) {
guint8 esi_type = 0;
proto_tree *esi_tree;
proto_item *ti;
wmem_allocator_t *buffer_value_string = NULL;
ti = proto_tree_add_item(tree, hf_bgp_evpn_nlri_esi, tvb, offset, 10, ENC_NA);
esi_tree = proto_item_add_subtree(ti, ett_bgp_evpn_nlri_esi);
proto_tree_add_item(esi_tree, hf_bgp_evpn_nlri_esi_type, tvb, offset, 1, ENC_BIG_ENDIAN);
esi_type = tvb_get_guint8(tvb, offset);
switch (esi_type) {
case BGP_NLRI_EVPN_ESI_VALUE :
proto_tree_add_item(esi_tree, hf_bgp_evpn_nlri_esi_value, tvb,
offset+1, 9, ENC_NA);
proto_item_append_text(ti, ": %s",
tvb_bytes_to_str_punct(buffer_value_string, tvb, offset + 1, 9, ' '));
break;
case BGP_NLRI_EVPN_ESI_LACP :
proto_tree_add_item(esi_tree, hf_bgp_evpn_nlri_esi_lacp_mac, tvb,
offset+1, 6, ENC_NA);
proto_tree_add_item(esi_tree, hf_bgp_evpn_nlri_esi_portk, tvb,
offset+7, 2, ENC_NA);
proto_tree_add_item(esi_tree, hf_bgp_evpn_nlri_esi_remain, tvb,
offset+9, 1, ENC_NA);
proto_item_append_text(ti, ": %s, Key: %s",
tvb_ether_to_str(tvb,offset+1),
tvb_bytes_to_str_punct(buffer_value_string, tvb, offset + 7, 2, ' '));
break;
case BGP_NLRI_EVPN_ESI_MSTP :
proto_tree_add_item(esi_tree, hf_bgp_evpn_nlri_esi_rb_mac, tvb,
offset+1, 6, ENC_NA);
proto_tree_add_item(esi_tree, hf_bgp_evpn_nlri_esi_rbprio, tvb,
offset+7, 2, ENC_NA);
proto_tree_add_item(esi_tree, hf_bgp_evpn_nlri_esi_remain, tvb,
offset+9, 1, ENC_NA);
proto_item_append_text(ti, ": %s, Priority: %s",
tvb_ether_to_str(tvb,offset+1),
tvb_bytes_to_str_punct(buffer_value_string, tvb, offset + 7, 2, ' '));
break;
case BGP_NLRI_EVPN_ESI_MAC :
proto_tree_add_item(esi_tree, hf_bgp_evpn_nlri_esi_sys_mac, tvb,
offset+1, 6, ENC_NA);
proto_tree_add_item(esi_tree, hf_bgp_evpn_nlri_esi_mac_discr, tvb,
offset+7, 2, ENC_NA);
proto_tree_add_item(esi_tree, hf_bgp_evpn_nlri_esi_remain, tvb,
offset+9, 1, ENC_NA);
proto_item_append_text(ti, ": %s, Discriminator: %s",
tvb_ether_to_str(tvb,offset+1),
tvb_bytes_to_str_punct(buffer_value_string, tvb, offset + 7, 2, ' '));
break;
case BGP_NLRI_EVPN_ESI_RID :
proto_tree_add_item(esi_tree, hf_bgp_evpn_nlri_esi_router_id, tvb,
offset+1, 4, ENC_BIG_ENDIAN);
proto_tree_add_item(esi_tree, hf_bgp_evpn_nlri_esi_router_discr, tvb,
offset+5, 4, ENC_NA);
proto_tree_add_item(esi_tree, hf_bgp_evpn_nlri_esi_remain, tvb,
offset+9, 1, ENC_NA);
proto_item_append_text(ti, ": %s, Discriminator: %s",
tvb_ip_to_str(tvb,offset+1),
tvb_bytes_to_str_punct(buffer_value_string, tvb, offset + 5, 4, ' '));
break;
case BGP_NLRI_EVPN_ESI_ASN :
proto_tree_add_item(esi_tree, hf_bgp_evpn_nlri_esi_asn, tvb,
offset+1, 4, ENC_BIG_ENDIAN);
proto_tree_add_item(esi_tree, hf_bgp_evpn_nlri_esi_asn_discr, tvb,
offset+5, 4, ENC_NA);
proto_tree_add_item(esi_tree, hf_bgp_evpn_nlri_esi_remain, tvb,
offset+9, 1, ENC_NA);
proto_item_append_text(ti, ": %u, Discriminator: %s",
tvb_get_ntohl(tvb,offset+1),
tvb_bytes_to_str_punct(buffer_value_string, tvb, offset + 5, 4, ' '));
break;
case BGP_NLRI_EVPN_ESI_RES :
proto_tree_add_item(esi_tree, hf_bgp_evpn_nlri_esi_reserved, tvb,
offset+1, 9, ENC_NA);
break;
default :
expert_add_info_format(pinfo, tree, &ei_bgp_evpn_nlri_esi_type_err,
"Invalid EVPN ESI (%u)!", esi_type);
return (-1);
}
return(0);
}
/*
* * Decode EVPN NLRI, http://tools.ietf.org/html/draft-ietf-l2vpn-evpn-05#section-7.1
* */
static int decode_evpn_nlri(proto_tree *tree, tvbuff_t *tvb, gint offset, packet_info *pinfo) {
int start_offset = offset;
proto_tree *prefix_tree;
proto_item *ti;
guint8 route_type;
guint labnum;
guint8 nlri_len;
guint8 ip_len;
guint32 total_length = 0;
proto_item *item;
wmem_strbuf_t *stack_strbuf; /* label stack */
route_type = tvb_get_guint8(tvb, offset);
if (route_type == 0 || route_type > 5) {
expert_add_info_format(pinfo, tree, &ei_bgp_evpn_nlri_rt_type_err,
"Invalid EVPN Route Type (%u)!", route_type);
return -1;
}
nlri_len = tvb_get_guint8(tvb, offset + 1);
ti = proto_tree_add_item(tree, hf_bgp_evpn_nlri, tvb, start_offset,
nlri_len+2, ENC_NA);
prefix_tree = proto_item_add_subtree(ti, ett_bgp_evpn_nlri);
proto_tree_add_item(prefix_tree, hf_bgp_evpn_nlri_rt, tvb, start_offset,
1, ENC_BIG_ENDIAN);
proto_item_append_text(ti, ": %s", val_to_str(tvb_get_guint8(tvb, offset), evpnrtypevals, "Unknown capability %d"));
proto_tree_add_item(prefix_tree, hf_bgp_evpn_nlri_len, tvb, start_offset+1,
1, ENC_BIG_ENDIAN);
if (route_type == EVPN_ETH_SEGMENT_ROUTE && nlri_len < 21) {
expert_add_info_format(pinfo, prefix_tree, &ei_bgp_evpn_nlri_rt4_len_err,
"Invalid length (%u) of EVPN NLRI Route Type 4 (Ethernet Segment Route)!", nlri_len);
return -1;
}
item = proto_tree_add_item(prefix_tree, hf_bgp_evpn_nlri_rd, tvb, start_offset+2,
8, ENC_NA);
proto_item_append_text(item, " (%s)", decode_bgp_rd(tvb, offset + 2));
switch (route_type) {
case EVPN_AD_ROUTE:
/*
+---------------------------------------+
| RD (8 octets) |
+---------------------------------------+
|Ethernet Segment Identifier (10 octets)|
+---------------------------------------+
| Ethernet Tag ID (4 octets) |
+---------------------------------------+
| MPLS Label (3 octets) |
+---------------------------------------+
*/
decode_evpn_nlri_esi(prefix_tree, tvb, start_offset+10, pinfo);
proto_tree_add_item(prefix_tree, hf_bgp_evpn_nlri_etag, tvb, start_offset+20,
4, ENC_BIG_ENDIAN);
stack_strbuf = wmem_strbuf_new_label(wmem_packet_scope());
labnum = decode_MPLS_stack(tvb, offset + 24,
stack_strbuf);
proto_tree_add_string(prefix_tree, hf_bgp_evpn_nlri_mpls_ls, tvb, start_offset+24,
labnum*3, wmem_strbuf_get_str(stack_strbuf));
/*Add 2 for Route Type and Length fields*/
total_length = 25 + 2;
break;
case EVPN_MAC_ROUTE:
/*
+---------------------------------------+
| RD (8 octets) |
+---------------------------------------+
|Ethernet Segment Identifier (10 octets)|
+---------------------------------------+
| Ethernet Tag ID (4 octets) |
+---------------------------------------+
| MAC Address Length (1 octet) |
+---------------------------------------+
| MAC Address (6 octets) |
+---------------------------------------+
| IP Address Length (1 octet) |
+---------------------------------------+
| IP Address (0 or 4 or 16 octets) |
+---------------------------------------+
| MPLS Label1 (3 octets) |
+---------------------------------------+
| MPLS Label2 (0 or 3 octets) |
+---------------------------------------+
*/
decode_evpn_nlri_esi(prefix_tree, tvb, start_offset+10, pinfo);
proto_tree_add_item(prefix_tree, hf_bgp_evpn_nlri_etag, tvb, start_offset+20,
4, ENC_BIG_ENDIAN);
proto_tree_add_item(prefix_tree, hf_bgp_evpn_nlri_maclen, tvb, start_offset+24,
1, ENC_BIG_ENDIAN);
proto_tree_add_item(prefix_tree, hf_bgp_evpn_nlri_mac_addr, tvb, start_offset+25,
6, ENC_NA);
ip_len = tvb_get_guint8(tvb, offset + 31) / 8;
proto_tree_add_item(prefix_tree, hf_bgp_evpn_nlri_iplen, tvb, start_offset+31,
1, ENC_BIG_ENDIAN);
total_length = 31;
if (ip_len == 4) {
/*IPv4 address*/
proto_tree_add_item(prefix_tree, hf_bgp_evpn_nlri_ip_addr, tvb, start_offset+32,
4, ENC_NA);
total_length += 4;
} else if (ip_len == 16) {
/*IPv6 address*/
proto_tree_add_item(prefix_tree, hf_bgp_evpn_nlri_ipv6_addr, tvb, start_offset+32,
16, ENC_NA);
total_length += 16;
} else if (ip_len == 0) {
/*IP not included*/
proto_tree_add_expert(prefix_tree, pinfo, &ei_bgp_evpn_nlri_rt4_no_ip, tvb, start_offset+32, 1);
} else {
return -1;
}
stack_strbuf = wmem_strbuf_new_label(wmem_packet_scope());
labnum = decode_MPLS_stack(tvb, offset + total_length + 1,
stack_strbuf);
proto_tree_add_string(prefix_tree, hf_bgp_evpn_nlri_mpls_ls, tvb, start_offset+total_length+1,
labnum*3, wmem_strbuf_get_str(stack_strbuf));
total_length = total_length + 4;
break;
case EVPN_INC_MCAST_TREE:
/*
+---------------------------------------+
| RD (8 octets) |
+---------------------------------------+
| Ethernet Tag ID (4 octets) |
+---------------------------------------+
| IP Address Length (1 octet) |
+---------------------------------------+
| Originating Router's IP Addr |
| (4 or 16 octets) |
+---------------------------------------+
*/
proto_tree_add_item(prefix_tree, hf_bgp_evpn_nlri_etag, tvb, start_offset+10,
4, ENC_BIG_ENDIAN);
ip_len = tvb_get_guint8(tvb, offset + 14) / 8;
proto_tree_add_item(prefix_tree, hf_bgp_evpn_nlri_iplen, tvb, start_offset+14,
1, ENC_BIG_ENDIAN);
total_length = 15;
if (ip_len == 4) {
/*IPv4 address*/
proto_tree_add_item(prefix_tree, hf_bgp_evpn_nlri_ip_addr, tvb, start_offset+15,
4, ENC_NA);
total_length += 4;
} else if (ip_len == 16) {
/*IPv6 address*/
proto_tree_add_item(prefix_tree, hf_bgp_evpn_nlri_ipv6_addr, tvb, start_offset+15,
16, ENC_NA);
total_length += 16;
} else if (ip_len == 0) {
/*IP not included*/
proto_tree_add_expert(prefix_tree, pinfo, &ei_bgp_evpn_nlri_rt4_no_ip, tvb, start_offset, 1);
} else {
expert_add_info_format(pinfo, prefix_tree, &ei_bgp_evpn_nlri_rt4_len_err,
"Invalid length of IP Address (%u) in EVPN NLRI Route Type 3 (Iclusive Multicast Tree Route)!", ip_len);
return -1;
}
break;
case EVPN_ETH_SEGMENT_ROUTE:
/*
+---------------------------------------+
| RD (8 octets) |
+---------------------------------------+
|Ethernet Segment Identifier (10 octets)|
+---------------------------------------+
| IP Address Length (1 octet) |
+---------------------------------------+
| Originating Router's IP Addr |
| (4 or 16 octets) |
+---------------------------------------+
*/
decode_evpn_nlri_esi(prefix_tree, tvb, start_offset+10, pinfo);
ip_len = tvb_get_guint8(tvb, offset + 20) / 8;
proto_tree_add_item(prefix_tree, hf_bgp_evpn_nlri_iplen, tvb, start_offset+20,
1, ENC_BIG_ENDIAN);
total_length = 21;
if (ip_len == 4) {
/*IPv4 address*/
proto_tree_add_item(prefix_tree, hf_bgp_evpn_nlri_ip_addr, tvb, start_offset+21,
4, ENC_NA);
total_length += 4;
} else if (ip_len == 16) {
/*IPv6 address*/
proto_tree_add_item(prefix_tree, hf_bgp_evpn_nlri_ipv6_addr, tvb, start_offset+21,
16, ENC_NA);
total_length += 16;
} else if (ip_len == 0) {
/*IP not included*/
proto_tree_add_expert(prefix_tree, pinfo, &ei_bgp_evpn_nlri_rt4_no_ip, tvb, start_offset, 1);
} else {
expert_add_info_format(pinfo, prefix_tree, &ei_bgp_evpn_nlri_rt4_len_err,
"Invalid length of IP Address (%u) in EVPN NLRI Route Type 4 (Ethernet Segment Route)!", ip_len);
return -1;
}
break;
case EVPN_IP_PREFIX_ROUTE:
/*
+---------------------------------------+
| RD (8 octets) |
+---------------------------------------+
|Ethernet Segment Identifier (10 octets)|
+---------------------------------------+
| Ethernet Tag ID (4 octets) |
+---------------------------------------+
| IP Prefix Length (1 octet) |
+---------------------------------------+
| IP Prefix (4 or 16 octets) |
+---------------------------------------+
| GW IP Address (4 or 16 octets) |
+---------------------------------------+
| MPLS Label (3 octets) |
+---------------------------------------+
*/
decode_evpn_nlri_esi(prefix_tree, tvb, start_offset+10, pinfo);
proto_tree_add_item(prefix_tree, hf_bgp_evpn_nlri_etag, tvb, start_offset+20,
4, ENC_BIG_ENDIAN);
proto_tree_add_item(prefix_tree, hf_bgp_evpn_nlri_prefix_len, tvb, start_offset+24,
1, ENC_BIG_ENDIAN);
switch (nlri_len) {
case 34 :
/* IPv4 address */
proto_tree_add_item(prefix_tree, hf_bgp_evpn_nlri_ip_addr, tvb, start_offset+25,
4, ENC_NA);
proto_tree_add_item(prefix_tree, hf_bgp_evpn_nlri_ipv4_gtw, tvb, start_offset+29,
4, ENC_NA);
decode_MPLS_stack_tree(tvb, start_offset+33, prefix_tree);
total_length = 36;
break;
case 58 :
/* IPv6 address */
proto_tree_add_item(prefix_tree, hf_bgp_evpn_nlri_ipv6_addr, tvb, start_offset+25,
16, ENC_NA);
proto_tree_add_item(prefix_tree, hf_bgp_evpn_nlri_ipv6_gtw, tvb, start_offset+41,
16, ENC_NA);
decode_MPLS_stack_tree(tvb, start_offset+57, prefix_tree);
total_length = 60;
break;
default :
expert_add_info_format(pinfo, prefix_tree, &ei_bgp_evpn_nlri_rt4_len_err,
"Invalid total nlri length (%u) in EVPN NLRI Route Type 5 (IP prefix Route)!", nlri_len);
return -1;
}
break;
default:
return -1;
}
return total_length;
}
/*
* Decode a multiprotocol prefix
*/
static int
decode_prefix_MP(proto_tree *tree, int hf_addr4, int hf_addr6,
guint16 afi, guint8 safi, tvbuff_t *tvb, gint offset,
const char *tag, packet_info *pinfo)
{
int start_offset = offset;
proto_item *ti;
proto_tree *prefix_tree;
proto_item *nlri_ti;
proto_tree *nlri_tree;
proto_item *disting_item;
proto_tree *disting_tree;
int total_length; /* length of the entire item */
int length; /* length of the prefix address, in bytes */
int tmp_length;
guint plen; /* length of the prefix address, in bits */
guint labnum; /* number of labels */
guint16 tnl_id; /* Tunnel Identifier */
union {
guint8 addr_bytes[4];
guint32 addr;
} ip4addr; /* IPv4 address */
address addr;
struct e_in6_addr ip6addr; /* IPv6 address */
guint16 rd_type; /* Route Distinguisher type */
guint16 nlri_type; /* NLRI Type */
guint16 tmp16;
wmem_strbuf_t *stack_strbuf; /* label stack */
wmem_strbuf_t *comm_strbuf;
switch (afi) {
case AFNUM_INET:
switch (safi) {
case SAFNUM_UNICAST:
case SAFNUM_MULCAST:
case SAFNUM_UNIMULC:
total_length = decode_prefix4(tree, pinfo, NULL,hf_addr4, tvb, offset, 0, tag);
if (total_length < 0)
return -1;
break;
case SAFNUM_MPLS_LABEL:
plen = tvb_get_guint8(tvb, offset);
stack_strbuf = wmem_strbuf_new_label(wmem_packet_scope());
labnum = decode_MPLS_stack(tvb, offset + 1, stack_strbuf);
offset += (1 + labnum * 3);
if (plen <= (labnum * 3*8)) {
proto_tree_add_expert_format(tree, pinfo, &ei_bgp_prefix_length_invalid, tvb, start_offset, 1,
"%s Labeled IPv4 prefix length %u invalid",
tag, plen);
return -1;
}
plen -= (labnum * 3*8);
length = tvb_get_ipv4_addr_with_prefix_len(tvb, offset, ip4addr.addr_bytes, plen);
if (length < 0) {
proto_tree_add_expert_format(tree, pinfo, &ei_bgp_prefix_length_invalid, tvb, start_offset, 1,
"%s Labeled IPv4 prefix length %u invalid",
tag, plen + (labnum * 3*8));
return -1;
}
set_address(&addr, AT_IPv4, 4, ip4addr.addr_bytes);
prefix_tree = proto_tree_add_subtree_format(tree, tvb, start_offset,
(offset + length) - start_offset,
ett_bgp_prefix, NULL,
"Label Stack=%s IPv4=%s/%u",
wmem_strbuf_get_str(stack_strbuf),
address_to_str(wmem_packet_scope(), &addr), plen);
proto_tree_add_uint_format(prefix_tree, hf_bgp_prefix_length, tvb, start_offset, 1, plen + labnum * 3 * 8,
"%s Prefix length: %u", tag, plen + labnum * 3 * 8);
proto_tree_add_string_format(prefix_tree, hf_bgp_label_stack, tvb, start_offset + 1, 3 * labnum, wmem_strbuf_get_str(stack_strbuf),
"%s Label Stack: %s", tag, wmem_strbuf_get_str(stack_strbuf));
proto_tree_add_ipv4(prefix_tree, hf_addr4, tvb, offset,
length, ip4addr.addr);
total_length = (1 + labnum*3) + length;
break;
case SAFNUM_MCAST_VPN:
total_length = decode_mcast_vpn_nlri(tree, tvb, offset, afi);
if (total_length < 0)
return -1;
break;
case SAFNUM_MDT:
total_length = decode_mdt_safi(tree, tvb, offset);
if (total_length < 0)
return -1;
break;
case SAFNUM_ROUTE_TARGET:
plen = tvb_get_guint8(tvb, offset);
if (plen == 0) {
proto_tree_add_string(tree, hf_bgp_wildcard_route_target, tvb, offset, 1, tag);
total_length = 1;
break;
}
if ((plen < 32) || (plen > 96)) {
proto_tree_add_expert_format(tree, pinfo, &ei_bgp_length_invalid, tvb, offset, 1,
"%s Route target length %u invalid",
tag, plen);
return -1;
}
length = (plen + 7)/8;
comm_strbuf = wmem_strbuf_new_label(wmem_packet_scope());
switch (tvb_get_ntohs(tvb, offset + 1 + 4)) {
case BGP_EXT_COM_RT_AS2:
wmem_strbuf_append_printf(comm_strbuf, "%u:%u",
tvb_get_ntohs(tvb, offset + 1 + 6),
tvb_get_ntohl(tvb, offset + 1 + 8));
break;
case BGP_EXT_COM_RT_IP4:
wmem_strbuf_append_printf(comm_strbuf, "%s:%u",
tvb_ip_to_str(tvb, offset + 1 + 6),
tvb_get_ntohs(tvb, offset + 1 + 10));
break;
case BGP_EXT_COM_RT_AS4:
wmem_strbuf_append_printf(comm_strbuf, "%u:%u",
tvb_get_ntohl(tvb, 6),
tvb_get_ntohs(tvb, offset + 1 + 10));
break;
default:
wmem_strbuf_append_printf(comm_strbuf, "Invalid RT type");
break;
}
prefix_tree = proto_tree_add_subtree_format(tree, tvb, offset + 1, length,
ett_bgp_prefix, NULL, "%s %u:%s/%u",
tag, tvb_get_ntohl(tvb, offset + 1 + 0),
wmem_strbuf_get_str(comm_strbuf),
plen);
proto_tree_add_item(prefix_tree, hf_bgp_prefix_length, tvb, offset, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(prefix_tree, hf_bgp_originating_as, tvb, offset + 1, 4, ENC_BIG_ENDIAN);
proto_tree_add_string(prefix_tree, hf_bgp_community_prefix, tvb, offset + 1 + 4, length - 4, wmem_strbuf_get_str(comm_strbuf));
total_length = 1 + length;
break;
case SAFNUM_ENCAPSULATION:
plen = tvb_get_guint8(tvb, offset);
if (plen != 32){
proto_tree_add_expert_format(tree, pinfo, &ei_bgp_length_invalid, tvb, offset, 1,
"%s IPv4 address length %u invalid",
tag, plen);
return -1;
}
offset += 1;
proto_tree_add_item(tree, hf_bgp_endpoint_address, tvb, offset, 4, ENC_NA);
total_length = 5; /* length(1 octet) + address(4 octets) */
break;
case SAFNUM_TUNNEL:
plen = tvb_get_guint8(tvb, offset);
if (plen <= 16){
proto_tree_add_expert_format(tree, pinfo, &ei_bgp_prefix_length_invalid, tvb, start_offset, 1,
"%s Tunnel IPv4 prefix length %u invalid",
tag, plen);
return -1;
}
tnl_id = tvb_get_ntohs(tvb, offset + 1);
offset += 3; /* Length + Tunnel Id */
plen -= 16; /* 2-octet Identifier */
length = tvb_get_ipv4_addr_with_prefix_len(tvb, offset, ip4addr.addr_bytes, plen);
if (length < 0) {
proto_tree_add_expert_format(tree, pinfo, &ei_bgp_prefix_length_invalid, tvb, start_offset, 1,
"%s Tunnel IPv4 prefix length %u invalid",
tag, plen + 16);
return -1;
}
set_address(&addr, AT_IPv4, 4, ip4addr.addr_bytes);
prefix_tree = proto_tree_add_subtree_format(tree, tvb, start_offset,
(offset + length) - start_offset,
ett_bgp_prefix, NULL,
"Tunnel Identifier=0x%x IPv4=%s/%u",
tnl_id, address_to_str(wmem_packet_scope(), &addr), plen);
proto_tree_add_item(prefix_tree, hf_bgp_prefix_length, tvb, start_offset, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(prefix_tree, hf_bgp_mp_nlri_tnl_id, tvb,
start_offset + 1, 2, ENC_BIG_ENDIAN);
proto_tree_add_ipv4(prefix_tree, hf_addr4, tvb, offset,
length, ip4addr.addr);
total_length = 1 + 2 + length; /* length field + Tunnel Id + IPv4 len */
break;
case SAFNUM_LAB_VPNUNICAST:
case SAFNUM_LAB_VPNMULCAST:
case SAFNUM_LAB_VPNUNIMULC:
plen = tvb_get_guint8(tvb, offset);
stack_strbuf = wmem_strbuf_new_label(wmem_packet_scope());
labnum = decode_MPLS_stack(tvb, offset + 1, stack_strbuf);
offset += (1 + labnum * 3);
if (plen <= (labnum * 3*8)) {
proto_tree_add_expert_format(tree, pinfo, &ei_bgp_prefix_length_invalid, tvb, start_offset, 1,
"%s Labeled VPN IPv4 prefix length %u invalid",
tag, plen);
return -1;
}
plen -= (labnum * 3*8);
if (plen < 8*8) {
proto_tree_add_expert_format(tree, pinfo, &ei_bgp_prefix_length_invalid, tvb, start_offset, 1,
"%s Labeled VPN IPv4 prefix length %u invalid",
tag, plen + (labnum * 3*8));
return -1;
}
plen -= 8*8;
length = tvb_get_ipv4_addr_with_prefix_len(tvb, offset + 8, ip4addr.addr_bytes, plen);
if (length < 0) {
proto_tree_add_expert_format(tree, pinfo, &ei_bgp_prefix_length_invalid, tvb, start_offset, 1,
"%s Labeled VPN IPv4 prefix length %u invalid",
tag, plen + (labnum * 3*8) + 8*8);
return -1;
}
set_address(&addr, AT_IPv4, 4, ip4addr.addr_bytes);
prefix_tree = proto_tree_add_subtree_format(tree, tvb, start_offset,
(offset + 8 + length) - start_offset,
ett_bgp_prefix, NULL, "BGP Prefix");
proto_tree_add_item(prefix_tree, hf_bgp_prefix_length, tvb, start_offset, 1, ENC_NA);
proto_tree_add_string(prefix_tree, hf_bgp_label_stack, tvb, start_offset + 1, 3 * labnum, wmem_strbuf_get_str(stack_strbuf));
proto_tree_add_string(prefix_tree, hf_bgp_rd, tvb, start_offset + 1 + 3 * labnum, 8, decode_bgp_rd(tvb, offset));
proto_tree_add_ipv4(prefix_tree, hf_addr4, tvb, offset + 8, length, ip4addr.addr);
total_length = (1 + labnum * 3 + 8) + length;
break;
case SAFNUM_FSPEC_RULE:
case SAFNUM_FSPEC_VPN_RULE:
total_length = decode_flowspec_nlri(tree, tvb, offset, afi, pinfo);
if(total_length < 0)
return(-1);
total_length++;
break;
default:
proto_tree_add_expert_format(tree, pinfo, &ei_bgp_unknown_safi, tvb, start_offset, 0,
"Unknown SAFI (%u) for AFI %u", safi, afi);
return -1;
} /* switch (safi) */
break;
case AFNUM_INET6:
switch (safi) {
case SAFNUM_UNICAST:
case SAFNUM_MULCAST:
case SAFNUM_UNIMULC:
total_length = decode_prefix6(tree, pinfo, hf_addr6, tvb, offset, 0, tag);
if (total_length < 0)
return -1;
break;
case SAFNUM_MPLS_LABEL:
plen = tvb_get_guint8(tvb, offset);
stack_strbuf = wmem_strbuf_new_label(wmem_packet_scope());
labnum = decode_MPLS_stack(tvb, offset + 1, stack_strbuf);
offset += (1 + labnum * 3);
if (plen <= (labnum * 3*8)) {
proto_tree_add_expert_format(tree, pinfo, &ei_bgp_prefix_length_invalid, tvb, start_offset, 1,
"%s Labeled IPv6 prefix length %u invalid", tag, plen);
return -1;
}
plen -= (labnum * 3*8);
length = tvb_get_ipv6_addr_with_prefix_len(tvb, offset, &ip6addr, plen);
if (length < 0) {
proto_tree_add_expert_format(tree, pinfo, &ei_bgp_prefix_length_invalid, tvb, start_offset, 1,
"%s Labeled IPv6 prefix length %u invalid",
tag, plen + (labnum * 3*8));
return -1;
}
/* XXX - break off IPv6 into its own field */
set_address(&addr, AT_IPv6, 16, ip6addr.bytes);
proto_tree_add_string_format(tree, hf_bgp_label_stack, tvb, start_offset,
(offset + length) - start_offset,
wmem_strbuf_get_str(stack_strbuf), "Label Stack=%s, IPv6=%s/%u",
wmem_strbuf_get_str(stack_strbuf),
address_to_str(wmem_packet_scope(), &addr), plen);
total_length = (1 + labnum * 3) + length;
break;
case SAFNUM_ENCAPSULATION:
plen = tvb_get_guint8(tvb, offset);
if (plen != 128){
proto_tree_add_expert_format(tree, pinfo, &ei_bgp_length_invalid, tvb, offset, 1,
"%s IPv6 address length %u invalid",
tag, plen);
return -1;
}
offset += 1;
proto_tree_add_item(tree, hf_bgp_endpoint_address_ipv6, tvb, offset, 16, ENC_NA);
total_length = 17; /* length(1 octet) + address(16 octets) */
break;
case SAFNUM_TUNNEL:
plen = tvb_get_guint8(tvb, offset);
if (plen <= 16){
proto_tree_add_expert_format(tree, pinfo, &ei_bgp_prefix_length_invalid, tvb, start_offset, 1,
"%s Tunnel IPv6 prefix length %u invalid",
tag, plen);
return -1;
}
tnl_id = tvb_get_ntohs(tvb, offset + 1);
offset += 3; /* Length + Tunnel Id */
plen -= 16; /* 2-octet Identifier */
length = tvb_get_ipv6_addr_with_prefix_len(tvb, offset, &ip6addr, plen);
if (length < 0) {
proto_tree_add_expert_format(tree, pinfo, &ei_bgp_prefix_length_invalid, tvb, start_offset, 1,
"%s Tunnel IPv6 prefix length %u invalid",
tag, plen + 16);
return -1;
}
set_address(&addr, AT_IPv6, 16, ip6addr.bytes);
prefix_tree = proto_tree_add_subtree_format(tree, tvb, start_offset,
(offset + length) - start_offset,
ett_bgp_prefix, NULL,
"Tunnel Identifier=0x%x IPv6=%s/%u",
tnl_id, address_to_str(wmem_packet_scope(), &addr), plen);
proto_tree_add_item(prefix_tree, hf_bgp_prefix_length, tvb, start_offset, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(prefix_tree, hf_bgp_mp_nlri_tnl_id, tvb,
start_offset + 1, 2, ENC_BIG_ENDIAN);
proto_tree_add_ipv6(prefix_tree, hf_addr6, tvb, offset, length, &ip6addr);
total_length = (1 + 2) + length; /* length field + Tunnel Id + IPv4 len */
break;
case SAFNUM_LAB_VPNUNICAST:
case SAFNUM_LAB_VPNMULCAST:
case SAFNUM_LAB_VPNUNIMULC:
plen = tvb_get_guint8(tvb, offset);
stack_strbuf = wmem_strbuf_new_label(wmem_packet_scope());
labnum = decode_MPLS_stack(tvb, offset + 1, stack_strbuf);
offset += (1 + labnum * 3);
if (plen <= (labnum * 3*8)) {
proto_tree_add_expert_format(tree, pinfo, &ei_bgp_prefix_length_invalid, tvb, start_offset, 1,
"%s Labeled VPN IPv6 prefix length %u invalid", tag, plen);
return -1;
}
plen -= (labnum * 3*8);
rd_type = tvb_get_ntohs(tvb,offset);
if (plen < 8*8) {
proto_tree_add_expert_format(tree, pinfo, &ei_bgp_prefix_length_invalid, tvb, start_offset, 1,
"%s Labeled VPN IPv6 prefix length %u invalid",
tag, plen + (labnum * 3*8));
return -1;
}
plen -= 8*8;
switch (rd_type) {
case FORMAT_AS2_LOC:
length = tvb_get_ipv6_addr_with_prefix_len(tvb, offset + 8, &ip6addr, plen);
if (length < 0) {
proto_tree_add_expert_format(tree, pinfo, &ei_bgp_prefix_length_invalid, tvb, start_offset, 1,
"%s Labeled VPN IPv6 prefix length %u invalid",
tag, plen + (labnum * 3*8) + 8*8);
return -1;
}
/* XXX - break up into multiple fields */
set_address(&addr, AT_IPv6, 16, ip6addr.bytes);
proto_tree_add_string_format(tree, hf_bgp_label_stack, tvb, start_offset,
(offset + 8 + length) - start_offset,
wmem_strbuf_get_str(stack_strbuf), "Label Stack=%s RD=%u:%u, IPv6=%s/%u",
wmem_strbuf_get_str(stack_strbuf),
tvb_get_ntohs(tvb, offset + 2),
tvb_get_ntohl(tvb, offset + 4),
address_to_str(wmem_packet_scope(), &addr), plen);
total_length = (1 + labnum * 3 + 8) + length;
break;
case FORMAT_IP_LOC:
length = tvb_get_ipv6_addr_with_prefix_len(tvb, offset + 8, &ip6addr, plen);
if (length < 0) {
proto_tree_add_expert_format(tree, pinfo, &ei_bgp_prefix_length_invalid, tvb, start_offset, 1,
"%s Labeled VPN IPv6 prefix length %u invalid",
tag, plen + (labnum * 3*8) + 8*8);
return -1;
}
/* XXX - break up into multiple fields */
set_address(&addr, AT_IPv6, 16, &ip6addr);
proto_tree_add_string_format(tree, hf_bgp_label_stack, tvb, start_offset,
(offset + 8 + length) - start_offset,
wmem_strbuf_get_str(stack_strbuf), "Label Stack=%s RD=%s:%u, IPv6=%s/%u",
wmem_strbuf_get_str(stack_strbuf),
tvb_ip_to_str(tvb, offset + 2),
tvb_get_ntohs(tvb, offset + 6),
address_to_str(wmem_packet_scope(), &addr), plen);
total_length = (1 + labnum * 3 + 8) + length;
break;
case FORMAT_AS4_LOC:
length = tvb_get_ipv6_addr_with_prefix_len(tvb, offset + 8, &ip6addr, plen);
if (length < 0) {
proto_tree_add_expert_format(tree, pinfo, &ei_bgp_prefix_length_invalid, tvb, start_offset, 1,
"%s Labeled VPN IPv6 prefix length %u invalid",
tag, plen + (labnum * 3*8) + 8*8);
return -1;
}
/* XXX - break up into multiple fields */
set_address(&addr, AT_IPv6, 16, ip6addr.bytes);
proto_tree_add_string_format(tree, hf_bgp_label_stack, tvb, start_offset,
(offset + 8 + length) - start_offset,
"Label Stack=%s RD=%u.%u:%u, IPv6=%s/%u",
wmem_strbuf_get_str(stack_strbuf),
tvb_get_ntohs(tvb, offset + 2),
tvb_get_ntohs(tvb, offset + 4),
tvb_get_ntohs(tvb, offset + 6),
address_to_str(wmem_packet_scope(), &addr), plen);
total_length = (1 + labnum * 3 + 8) + length;
break;
default:
proto_tree_add_expert_format(tree, pinfo, &ei_bgp_unknown_label_vpn, tvb, start_offset, 0,
"Unknown labeled VPN IPv6 address format %u", rd_type);
return -1;
} /* switch (rd_type) */
break;
case SAFNUM_FSPEC_RULE:
case SAFNUM_FSPEC_VPN_RULE:
total_length = decode_flowspec_nlri(tree, tvb, offset, afi, pinfo);
if(total_length < 0)
return(-1);
total_length++;
break;
default:
proto_tree_add_expert_format(tree, pinfo, &ei_bgp_unknown_safi, tvb, start_offset, 0,
"Unknown SAFI (%u) for AFI %u", safi, afi);
return -1;
} /* switch (safi) */
break;
case AFNUM_L2VPN:
case AFNUM_L2VPN_OLD:
switch (safi) {
case SAFNUM_LAB_VPNUNICAST:
case SAFNUM_LAB_VPNMULCAST:
case SAFNUM_LAB_VPNUNIMULC:
case SAFNUM_VPLS:
plen = tvb_get_ntohs(tvb,offset);
proto_tree_add_item(tree, hf_bgp_vplsad_length, tvb, offset, 2, ENC_BIG_ENDIAN);
proto_tree_add_string(tree, hf_bgp_vplsad_rd, tvb, offset+2, 8, decode_bgp_rd(tvb, offset+2));
/* RFC6074 Section 7 BGP-AD and VPLS-BGP Interoperability
Both BGP-AD and VPLS-BGP [RFC4761] use the same AFI/SAFI. In order
for both BGP-AD and VPLS-BGP to co-exist, the NLRI length must be
used as a demultiplexer.
The BGP-AD NLRI has an NLRI length of 12 bytes, containing only an
8-byte RD and a 4-byte VSI-ID. VPLS-BGP [RFC4761] uses a 17-byte
NLRI length. Therefore, implementations of BGP-AD must ignore NLRI
that are greater than 12 bytes.
*/
if(plen == 12) /* BGP-AD */
{
proto_tree_add_item(tree, hf_bgp_bgpad_pe_addr, tvb, offset+10, 4, ENC_NA);
}else{ /* VPLS-BGP */
proto_tree_add_item(tree, hf_bgp_vplsbgp_ce_id, tvb, offset+10, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tree, hf_bgp_vplsbgp_labelblock_offset, tvb, offset+12, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tree, hf_bgp_vplsbgp_labelblock_size, tvb, offset+14, 2, ENC_BIG_ENDIAN);
stack_strbuf = wmem_strbuf_new_label(wmem_packet_scope());
decode_MPLS_stack(tvb, offset + 16, stack_strbuf);
proto_tree_add_string(tree, hf_bgp_vplsbgp_labelblock_base, tvb, offset+16, plen-14, wmem_strbuf_get_str(stack_strbuf));
}
/* FIXME there are subTLVs left to decode ... for now lets omit them */
total_length = plen+2;
break;
case SAFNUM_EVPN:
total_length = decode_evpn_nlri(tree, tvb, offset, pinfo);
break;
default:
proto_tree_add_expert_format(tree, pinfo, &ei_bgp_unknown_safi, tvb, start_offset, 0,
"Unknown SAFI (%u) for AFI %u", safi, afi);
return -1;
} /* switch (safi) */
break;
case AFNUM_LINK_STATE:
nlri_type = tvb_get_ntohs(tvb, offset);
total_length = tvb_get_ntohs(tvb, offset + 2);
length = total_length;
total_length += 4;
if (safi == SAFNUM_LINK_STATE) {
ti = proto_tree_add_item(tree, hf_bgp_ls_safi72_nlri, tvb, offset, total_length , ENC_NA);
} else if (safi == SAFNUM_LAB_VPNUNICAST) {
ti = proto_tree_add_item(tree, hf_bgp_ls_safi128_nlri, tvb, offset, total_length , ENC_NA);
} else
return -1;
prefix_tree = proto_item_add_subtree(ti, ett_bgp_mp_reach_nlri);
proto_tree_add_item(prefix_tree, hf_bgp_ls_nlri_type, tvb, offset, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(prefix_tree, hf_bgp_ls_nlri_length, tvb, offset + 2, 2, ENC_BIG_ENDIAN);
offset += 4;
/* when SAFI 128, then write route distinguisher */
if (safi == SAFNUM_LAB_VPNUNICAST) {
if (length < BGP_ROUTE_DISTINGUISHER_SIZE) {
if (length == 0) {
expert_add_info_format(pinfo, prefix_tree, &ei_bgp_ls_error,
"Unexpected end of SAFI 128 NLRI, Route Distinguisher field is required!");
}
if (length > 0) {
expert_add_info_format(pinfo, prefix_tree, &ei_bgp_ls_error,
"Unexpected Route Distinguisher length (%u)!",
length);
}
break;
}
disting_item = proto_tree_add_item(prefix_tree, hf_bgp_ls_safi128_nlri_route_distinguisher,
tvb, offset, BGP_ROUTE_DISTINGUISHER_SIZE, ENC_NA);
disting_tree = proto_item_add_subtree(disting_item, ett_bgp_mp_reach_nlri);
tmp16 = tvb_get_ntohs(tvb, offset);
proto_tree_add_item(disting_tree, hf_bgp_ls_safi128_nlri_route_distinguisher_type,
tvb, offset, 2, ENC_BIG_ENDIAN);
/* Route Distinguisher Type */
switch (tmp16) {
case 0:
proto_tree_add_item(disting_tree, hf_bgp_ls_safi128_nlri_route_dist_admin_asnum_2,
tvb, offset + 2, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(disting_tree, hf_bgp_ls_safi128_nlri_route_dist_asnum_4,
tvb, offset + 4, 4, ENC_BIG_ENDIAN);
break;
case 1:
proto_tree_add_item(disting_tree, hf_bgp_ls_safi128_nlri_route_dist_admin_ipv4,
tvb, offset + 2, 4, ENC_BIG_ENDIAN);
proto_tree_add_item(disting_tree, hf_bgp_ls_safi128_nlri_route_dist_asnum_2,
tvb, offset + 6, 2, ENC_BIG_ENDIAN);
break;
case 2:
proto_tree_add_item(disting_tree, hf_bgp_ls_safi128_nlri_route_dist_admin_asnum_4,
tvb, offset + 2, 4, ENC_BIG_ENDIAN);
proto_tree_add_item(disting_tree, hf_bgp_ls_safi128_nlri_route_dist_asnum_2,
tvb, offset + 6, 2, ENC_BIG_ENDIAN);
break;
default:
expert_add_info_format(pinfo, disting_tree, &ei_bgp_ls_error,
"Unknown Route Distinguisher type (%u)", tmp16);
}
offset += BGP_ROUTE_DISTINGUISHER_SIZE;
length -= BGP_ROUTE_DISTINGUISHER_SIZE;
}
switch (nlri_type) {
case LINK_STATE_LINK_NLRI:
nlri_ti = proto_tree_add_item(prefix_tree,
hf_bgp_ls_nlri_link_nlri_type, tvb, offset, length,
ENC_NA);
nlri_tree = proto_item_add_subtree(nlri_ti, ett_bgp_mp_reach_nlri);
tmp_length = decode_bgp_link_node_nlri_common_fields(tvb, nlri_tree,
offset, pinfo, length);
if (tmp_length < 1)
return -1;
offset += tmp_length;
length -= tmp_length;
/* dissect Remote Node descriptors TLV */
if (length > 0 && length < 4) {
expert_add_info_format(pinfo, nlri_tree, &ei_bgp_ls_error,
"Unknown data in Link-State Link NLRI!");
break;
}
if (length < 1)
break;
tmp_length = decode_bgp_link_node_nlri_tlvs(tvb, nlri_tree, offset,
pinfo, BGP_NLRI_TLV_REMOTE_NODE_DESCRIPTORS);
if (tmp_length < 1)
return -1;
offset += tmp_length;
length -= tmp_length;
/* dissect Link Descriptor NLRI */
if (length > 0 && length < 4) {
expert_add_info_format(pinfo, nlri_tree, &ei_bgp_ls_error,
"Unknown data in Link-State Link NLRI, length = %d bytes.", length);
break;
}
if (length < 1)
break;
tmp_length = decode_bgp_link_nlri_link_descriptors(tvb, nlri_tree,
offset, pinfo, length);
if (tmp_length < 1)
return -1;
break;
case LINK_STATE_NODE_NLRI:
nlri_ti = proto_tree_add_item(prefix_tree,
hf_bgp_ls_nlri_node_nlri_type, tvb, offset, length,
ENC_NA);
nlri_tree = proto_item_add_subtree(nlri_ti, ett_bgp_mp_reach_nlri);
tmp_length = decode_bgp_link_node_nlri_common_fields(tvb, nlri_tree,
offset, pinfo, length);
if (tmp_length < 1)
return -1;
break;
case LINK_STATE_IPV4_TOPOLOGY_PREFIX_NLRI:
nlri_ti = proto_tree_add_item(prefix_tree,
hf_bgp_ls_ipv4_topology_prefix_nlri_type, tvb, offset, length,
ENC_NA);
nlri_tree = proto_item_add_subtree(nlri_ti, ett_bgp_mp_reach_nlri);
tmp_length = decode_bgp_link_node_nlri_common_fields(tvb, nlri_tree,
offset, pinfo, length);
if (tmp_length < 1)
return -1;
offset += tmp_length;
length -= tmp_length;
/* dissect Prefix Descriptors NLRI */
if (length > 0 && length < 4) {
expert_add_info_format(pinfo, nlri_tree, &ei_bgp_ls_error,
"Unknown data in Link-State Link NLRI, length = %d bytes.", length);
break;
}
if (length < 1)
break;
tmp_length = decode_bgp_link_nlri_prefix_descriptors(tvb, nlri_tree,
offset, pinfo, length);
if (tmp_length < 1)
return -1;
break;
case LINK_STATE_IPV6_TOPOLOGY_PREFIX_NLRI:
nlri_ti = proto_tree_add_item(prefix_tree,
hf_bgp_ls_ipv6_topology_prefix_nlri_type, tvb, offset, length,
ENC_NA);
nlri_tree = proto_item_add_subtree(nlri_ti, ett_bgp_mp_reach_nlri);
tmp_length = decode_bgp_link_node_nlri_common_fields(tvb, nlri_tree,
offset, pinfo, length);
if (tmp_length < 1)
return -1;
offset += tmp_length;
length -= tmp_length;
/* dissect Prefix Descriptors NLRI */
if (length > 0 && length < 4) {
expert_add_info_format(pinfo, nlri_tree, &ei_bgp_ls_error,
"Unknown data in Link-State Link NLRI!");
break;
}
if (length < 1)
break;
tmp_length = decode_bgp_link_nlri_prefix_descriptors(tvb, nlri_tree,
offset, pinfo, length);
if (tmp_length < 1)
return -1;
break;
default:
proto_tree_add_expert_format(tree, pinfo, &ei_bgp_ls_error, tvb, start_offset, 0,
"Unknown Link-State NLRI type (%u)", afi);
}
break;
default:
proto_tree_add_expert_format(tree, pinfo, &ei_bgp_unknown_afi, tvb, start_offset, 0,
"Unknown AFI (%u) value", afi);
return -1;
} /* switch (afi) */
return(total_length);
}
/*
* Dissect a BGP capability.
*/
static int
dissect_bgp_capability_item(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo, int offset, gboolean action)
{
proto_tree *cap_tree;
proto_item *ti;
proto_item *ti_len;
guint8 ctype;
guint8 clen;
ti = proto_tree_add_item(tree, hf_bgp_cap, tvb, offset, -1, ENC_NA);
cap_tree = proto_item_add_subtree(ti, ett_bgp_cap);
proto_tree_add_item(cap_tree, hf_bgp_cap_type, tvb, offset, 1, ENC_BIG_ENDIAN);
ctype = tvb_get_guint8(tvb, offset);
proto_item_append_text(ti, ": %s", val_to_str(ctype, capability_vals, "Unknown capability %d"));
offset += 1;
ti_len = proto_tree_add_item(cap_tree, hf_bgp_cap_length, tvb, offset, 1, ENC_BIG_ENDIAN);
clen = tvb_get_guint8(tvb, offset);
proto_item_set_len(ti, clen+2);
offset += 1;
if(action){
proto_tree_add_item(cap_tree, hf_bgp_cap_action, tvb, offset, 1, ENC_BIG_ENDIAN);
proto_item_set_len(ti, clen+3);
offset += 1;
}
/* check the capability type */
switch (ctype) {
case BGP_CAPABILITY_RESERVED:
if (clen != 0) {
expert_add_info_format(pinfo, ti_len, &ei_bgp_cap_len_bad, "Capability length %u wrong, must be = 0", clen);
proto_tree_add_item(cap_tree, hf_bgp_cap_unknown, tvb, offset, clen, ENC_NA);
}
offset += clen;
break;
case BGP_CAPABILITY_MULTIPROTOCOL:
if (clen != 4) {
expert_add_info_format(pinfo, ti_len, &ei_bgp_cap_len_bad, "Capability length %u is wrong, must be = 4", clen);
proto_tree_add_item(cap_tree, hf_bgp_cap_unknown, tvb, offset, clen, ENC_NA);
offset += clen;
}
else {
/* AFI */
proto_tree_add_item(cap_tree, hf_bgp_cap_mp_afi, tvb, offset, 2, ENC_BIG_ENDIAN);
offset += 2;
/* Reserved */
proto_tree_add_item(cap_tree, hf_bgp_cap_reserved, tvb, offset, 1, ENC_NA);
offset += 1;
/* SAFI */
proto_tree_add_item(cap_tree, hf_bgp_cap_mp_safi, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
}
break;
case BGP_CAPABILITY_GRACEFUL_RESTART:
if ((clen < 6) && (clen != 2)) {
expert_add_info_format(pinfo, ti_len, &ei_bgp_cap_len_bad, "Capability length %u too short, must be greater than 6", clen);
proto_tree_add_item(cap_tree, hf_bgp_cap_unknown, tvb, offset, clen, ENC_NA);
offset += clen;
}
else {
int eclen = offset + clen;
static const int * timer_flags[] = {
&hf_bgp_cap_gr_timers_restart_flag,
&hf_bgp_cap_gr_timers_restart_time,
NULL
};
if (clen == 2){
expert_add_info(pinfo, ti_len, &ei_bgp_cap_gr_helper_mode_only);
}
/* Timers */
proto_tree_add_bitmask(cap_tree, tvb, offset, hf_bgp_cap_gr_timers, ett_bgp_cap, timer_flags, ENC_BIG_ENDIAN);
offset += 2;
/*
* what follows is alist of AFI/SAFI/flag triplets
* read it until the TLV ends
*/
while (offset < eclen) {
static const int * flags[] = {
&hf_bgp_cap_gr_flag_pfs,
NULL
};
/* AFI */
proto_tree_add_item(cap_tree, hf_bgp_cap_gr_afi, tvb, offset, 2, ENC_BIG_ENDIAN);
offset += 2;
/* SAFI */
proto_tree_add_item(cap_tree, hf_bgp_cap_gr_safi, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
/* Flags */
proto_tree_add_bitmask(cap_tree, tvb, offset, hf_bgp_cap_gr_flag, ett_bgp_cap, flags, ENC_BIG_ENDIAN);
offset += 1;
}
}
break;
case BGP_CAPABILITY_4_OCTET_AS_NUMBER:
if (clen != 4) {
expert_add_info_format(pinfo, ti_len, &ei_bgp_cap_len_bad, "Capability length %u is wrong, must be = 4", clen);
proto_tree_add_item(cap_tree, hf_bgp_cap_unknown, tvb, offset, clen, ENC_NA);
offset += clen;
}
else {
proto_tree_add_item(cap_tree, hf_bgp_cap_4as, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
}
break;
case BGP_CAPABILITY_DYNAMIC_CAPABILITY:
if (clen > 0) {
int eclen = offset + clen;
while (offset < eclen) {
proto_tree_add_item(cap_tree, hf_bgp_cap_dc, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
}
}
break;
case BGP_CAPABILITY_ADDITIONAL_PATHS:
if (clen != 4) {
expert_add_info_format(pinfo, ti_len, &ei_bgp_cap_len_bad, "Capability length %u is wrong, must be = 4", clen);
proto_tree_add_item(cap_tree, hf_bgp_cap_unknown, tvb, offset, clen, ENC_NA);
offset += clen;
}
else { /* AFI SAFI Send-receive*/
/* AFI */
proto_tree_add_item(cap_tree, hf_bgp_cap_ap_afi, tvb, offset, 2, ENC_BIG_ENDIAN);
offset += 2;
/* SAFI */
proto_tree_add_item(cap_tree, hf_bgp_cap_ap_safi, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
/* Send-Receive */
proto_tree_add_item(cap_tree, hf_bgp_cap_ap_sendreceive, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
}
break;
case BGP_CAPABILITY_FQDN:{
guint8 hostname_len, domain_name_len;
proto_tree_add_item(cap_tree, hf_bgp_cap_fqdn_hostname_len, tvb, offset, 1, ENC_NA);
hostname_len = tvb_get_guint8(tvb, offset);
offset += 1;
proto_tree_add_item(cap_tree, hf_bgp_cap_fqdn_hostname, tvb, offset, hostname_len, ENC_ASCII|ENC_NA);
offset += hostname_len;
proto_tree_add_item(cap_tree, hf_bgp_cap_fqdn_domain_name_len, tvb, offset, 1, ENC_NA);
domain_name_len = tvb_get_guint8(tvb, offset);
offset += 1;
proto_tree_add_item(cap_tree, hf_bgp_cap_fqdn_domain_name, tvb, offset, domain_name_len, ENC_ASCII|ENC_NA);
offset += domain_name_len;
}
break;
case BGP_CAPABILITY_ENHANCED_ROUTE_REFRESH:
case BGP_CAPABILITY_ROUTE_REFRESH_CISCO:
case BGP_CAPABILITY_ROUTE_REFRESH:
case BGP_CAPABILITY_CP_ORF:
if (clen != 0) {
expert_add_info_format(pinfo, ti_len, &ei_bgp_cap_len_bad, "Capability length %u wrong, must be = 0", clen);
proto_tree_add_item(cap_tree, hf_bgp_cap_unknown, tvb, offset, clen, ENC_NA);
}
offset += clen;
break;
case BGP_CAPABILITY_ORF_CISCO:
case BGP_CAPABILITY_COOPERATIVE_ROUTE_FILTERING:
if (clen < 6) {
expert_add_info_format(pinfo, ti_len, &ei_bgp_cap_len_bad, "Capability length %u too short, must be greater than 6", clen);
proto_tree_add_item(cap_tree, hf_bgp_cap_unknown, tvb, offset, clen, ENC_NA);
offset += clen;
}
else {
guint8 orfnum; /* number of ORFs */
int i;
/* AFI */
proto_tree_add_item(cap_tree, hf_bgp_cap_orf_afi, tvb, offset, 2, ENC_BIG_ENDIAN);
offset += 2;
/* Reserved */
proto_tree_add_item(cap_tree, hf_bgp_cap_reserved, tvb, offset, 1, ENC_NA);
offset += 1;
/* SAFI */
proto_tree_add_item(cap_tree, hf_bgp_cap_orf_safi, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
/* Number of ORFs */
orfnum = tvb_get_guint8(tvb, offset);
proto_tree_add_item(cap_tree, hf_bgp_cap_orf_number, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
for (i=0; i<orfnum; i++) {
/* ORF Type */
proto_tree_add_item(cap_tree, hf_bgp_cap_orf_type, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
/* Send/Receive */
proto_tree_add_item(cap_tree, hf_bgp_cap_orf_sendreceive, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
}
}
break;
/* unknown capability */
default:
if (clen != 0) {
proto_tree_add_item(cap_tree, hf_bgp_cap_unknown, tvb, offset, clen, ENC_NA);
}
offset += clen;
break;
} /* switch (ctype) */
return offset;
}
/*
* Dissect a BGP OPEN message.
*/
static void
dissect_bgp_open(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo)
{
guint8 optlen; /* Option Length */
int ptype; /* parameter type */
int plen; /* parameter length */
int cend; /* capabilities end */
int oend; /* options end */
int offset; /* tvb offset counter */
proto_item *ti; /* tree item */
proto_tree *opt_tree; /* subtree for options */
proto_tree *par_tree; /* subtree for par options */
offset = BGP_MARKER_SIZE + 2 + 1;
proto_tree_add_item(tree, hf_bgp_open_version, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
proto_tree_add_item(tree, hf_bgp_open_myas, tvb, offset, 2, ENC_BIG_ENDIAN);
offset += 2;
proto_tree_add_item(tree, hf_bgp_open_holdtime, tvb, offset, 2, ENC_BIG_ENDIAN);
offset += 2;
proto_tree_add_item(tree, hf_bgp_open_identifier, tvb, offset, 4, ENC_NA);
offset += 4;
proto_tree_add_item(tree, hf_bgp_open_opt_len, tvb, offset, 1, ENC_BIG_ENDIAN);
optlen = tvb_get_guint8(tvb, offset);
offset += 1;
/* optional parameters */
if (optlen > 0) {
oend = offset + optlen;
/* add a subtree */
ti = proto_tree_add_item(tree, hf_bgp_open_opt_params, tvb, offset, optlen, ENC_NA);
opt_tree = proto_item_add_subtree(ti, ett_bgp_options);
/* step through all of the optional parameters */
while (offset < oend) {
/* add a subtree */
ti = proto_tree_add_item(opt_tree, hf_bgp_open_opt_param, tvb, offset, -1, ENC_NA);
par_tree = proto_item_add_subtree(ti, ett_bgp_options);
/* display and grab the type ... */
proto_tree_add_item(par_tree, hf_bgp_open_opt_param_type, tvb, offset, 1, ENC_BIG_ENDIAN);
ptype = tvb_get_guint8(tvb, offset);
proto_item_append_text(ti, ": %s", val_to_str(ptype, bgp_open_opt_vals, "Unknown Parameter %d"));
offset += 1;
/* ... and length */
proto_tree_add_item(par_tree, hf_bgp_open_opt_param_len, tvb, offset, 1, ENC_BIG_ENDIAN);
plen = tvb_get_guint8(tvb, offset);
proto_item_set_len(ti, plen+2);
offset += 1;
/* check the type */
switch (ptype) {
case BGP_OPTION_AUTHENTICATION:
proto_tree_add_item(par_tree, hf_bgp_open_opt_param_auth, tvb, offset, plen, ENC_NA);
offset += plen;
break;
case BGP_OPTION_CAPABILITY:
/* grab the capability code */
cend = offset + plen;
/* step through all of the capabilities */
while (offset < cend) {
offset = dissect_bgp_capability_item(tvb, par_tree, pinfo, offset, FALSE);
}
break;
default:
proto_tree_add_item(opt_tree, hf_bgp_open_opt_param_unknown, tvb, offset, plen, ENC_NA);
break;
} /* switch (ptype) */
}
}
}
/*
* Heuristic for auto-detection of ASN length 2 or 4 bytes
*/
static guint8
heuristic_as2_or_4_from_as_path(tvbuff_t *tvb, gint as_path_offset, gint end_attr_offset, guint8 bgpa_type, gint *number_as_segment)
{
gint counter_as_segment=0;
gint offset_check=0;
guint8 assumed_as_len=0;
gint asn_is_null=0;
gint j=0;
gint k=0;
gint k_save=0;
guint8 next_type=0;
guint8 length=0;
/* Heuristic is done in two phases
* First we try to identify the as length (2 or 4 bytes)
* then we do check that our assumption is ok
* recalculating the offset and checking we end up with the right result
* k is used to navigate into the AS_PATH */
k = as_path_offset;
/* case of AS_PATH type being explicitly 4 bytes ASN */
if (bgpa_type == BGPTYPE_AS4_PATH) {
/* We calculate numbers of segments and return the as length */
assumed_as_len = 4;
while (k < end_attr_offset)
{
/* we skip segment type and point to length */
k++;
length = tvb_get_guint8(tvb, k);
/* length read let's move to first ASN */
k++;
/* we move to the next segment */
k = k + (length*assumed_as_len);
counter_as_segment++;
}
*number_as_segment = counter_as_segment;
return(4);
}
/* case of user specified ASN length */
if (bgp_asn_len != 0) {
/* We calculate numbers of segments and return the as length */
assumed_as_len = bgp_asn_len;
while (k < end_attr_offset)
{
/* we skip segment type and point to length */
k++;
length = tvb_get_guint8(tvb, k);
/* length read let's move to first ASN */
k++;
/* we move to the next segment */
k = k + (length*assumed_as_len);
/* if I am not facing the last segment k need to point to next length */
counter_as_segment++;
}
*number_as_segment = counter_as_segment;
return(bgp_asn_len);
}
/* case of a empty path attribute */
if (as_path_offset == end_attr_offset)
{
*number_as_segment = 0;
return(bgp_asn_len);
}
/* case of we run the heuristic to find the as length */
k_save = k;
/* we do run the heuristic on first segment and look at next segment if it exists */
k++;
length = tvb_get_guint8(tvb, k++);
/* let's do some checking with an as length 2 bytes */
offset_check = k + 2*length;
next_type = tvb_get_guint8(tvb, offset_check);
/* we do have one segment made of 2 bytes ASN we do reach the end of the attribute taking
* 2 bytes ASN for our calculation */
if (offset_check == end_attr_offset)
assumed_as_len = 2;
/* else we do check if we see a valid AS segment type after (length * AS 2 bytes) */
else if (next_type == AS_SET ||
next_type == AS_SEQUENCE ||
next_type == AS_CONFED_SEQUENCE ||
next_type == AS_CONFED_SET) {
/* that's a good sign to assume ASN 2 bytes let's check that 2 first bytes of each ASN doesn't eq 0 to confirm */
for (j=0; j < length && !asn_is_null; j++) {
if(tvb_get_ntohs(tvb, k+(2*j)) == 0) {
asn_is_null = 1;
}
}
if (asn_is_null == 0)
assumed_as_len = 2;
else
assumed_as_len = 4;
}
else
/* we didn't find a valid AS segment type in the next coming segment assuming 2 bytes ASN */
assumed_as_len = 4;
/* now that we have our assumed as length let's check we can calculate the attribute length properly */
k = k_save;
while (k < end_attr_offset)
{
/* we skip the AS type */
k++;
/* we get the length of the AS segment */
length = tvb_get_guint8(tvb, k);
/* let's point to the fist byte of the AS segment */
k++;
/* we move to the next segment */
k = k + (length*assumed_as_len);
counter_as_segment++;
}
if (k == end_attr_offset) {
/* success */
*number_as_segment = counter_as_segment;
return(assumed_as_len);
} else
/* we are in trouble */
return(-1);
}
/*
* Dissect BGP update extended communities
*/
static int
dissect_bgp_update_ext_com(proto_tree *parent_tree, tvbuff_t *tvb, guint16 tlen, guint tvb_off)
{
int offset=0;
int end=0;
int i=0;
guint8 com_type_high_byte;
guint8 com_stype_low_byte;
guint8 dscp_flags;
guint8 esi_label_flag;
proto_tree *communities_tree;
proto_tree *community_tree;
proto_item *communities_item=NULL;
proto_item *community_item=NULL;
gfloat linkband; /* Link bandwidth */
guint16 as_num;
guint16 tunnel_type=0;
offset = tvb_off ;
end = tvb_off + tlen ;
communities_item = proto_tree_add_item(parent_tree, hf_bgp_ext_communities, tvb, offset, tlen, ENC_NA);
communities_tree = proto_item_add_subtree(communities_item, ett_bgp_extended_communities);
proto_item_append_text(communities_item, ": (%u communit%s)", tlen/8, plurality(tlen/8, "y", "ies"));
while (offset < end) {
com_type_high_byte = tvb_get_guint8(tvb,offset); /* high community type octet */
com_stype_low_byte = tvb_get_guint8(tvb,offset+1); /* sur type low community type octet */
community_item = proto_tree_add_item(communities_tree, hf_bgp_ext_community, tvb, offset, 8, ENC_NA);
community_tree = proto_item_add_subtree(community_item,ett_bgp_extended_community);
switch (com_type_high_byte) {
case BGP_EXT_COM_TYPE_HIGH_TR_AS2: /* Transitive Two-Octet AS-Specific Extended Community */
proto_tree_add_item(community_tree, hf_bgp_ext_com_type_high, tvb, offset, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(community_tree, hf_bgp_ext_com_stype_tr_as2, tvb, offset+1, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(community_tree, hf_bgp_ext_com_value_as2, tvb, offset+2, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(community_tree, hf_bgp_ext_com_value_an4, tvb, offset+4, 4, ENC_BIG_ENDIAN);
proto_item_append_text(community_item, " %s %s: %u%s%d",
val_to_str_const(com_type_high_byte, bgpext_com_type_high, "Unknown"),
val_to_str_const(com_stype_low_byte, bgpext_com_stype_tr_as2, "Unknown"),
tvb_get_ntohs(tvb,offset+2),":",tvb_get_ntohl(tvb,offset+4));
break;
case BGP_EXT_COM_TYPE_HIGH_NTR_AS2: /* Non-Transitive Two-Octet AS-Specific Extended Community */
proto_tree_add_item(community_tree, hf_bgp_ext_com_type_high, tvb, offset, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(community_tree, hf_bgp_ext_com_stype_ntr_as2, tvb, offset+1, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(community_tree, hf_bgp_ext_com_value_as2, tvb, offset+2, 2, ENC_BIG_ENDIAN);
if (com_stype_low_byte == BGP_EXT_COM_STYPE_AS2_LBW) {
proto_tree_add_item(community_tree, hf_bgp_ext_com_value_link_bw, tvb, offset+4, 4, ENC_BIG_ENDIAN);
linkband = tvb_get_ntohieee_float(tvb,offset+4);
as_num = tvb_get_ntohs(tvb,offset+2);
proto_item_append_text(community_item, ": ASN %u, %.3f Mbps", as_num,linkband*8/1000000);
} else {
proto_tree_add_item(community_tree, hf_bgp_ext_com_value_an4, tvb, offset+4, 4, ENC_BIG_ENDIAN);
proto_item_append_text(community_item, " %s %s: %u%s%d",
val_to_str_const(com_type_high_byte, bgpext_com_type_high, "Unknown"),
val_to_str_const(com_stype_low_byte, bgpext_com_stype_ntr_as2, "Unknown"),
tvb_get_ntohs(tvb,offset+2),":",tvb_get_ntohl(tvb,offset+4));
}
break;
case BGP_EXT_COM_TYPE_HIGH_TR_IP4: /* Transitive IPv4-Address-specific Extended Community */
proto_tree_add_item(community_tree, hf_bgp_ext_com_type_high, tvb, offset, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(community_tree, hf_bgp_ext_com_stype_tr_IP4, tvb, offset+1, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(community_tree, hf_bgp_ext_com_value_IP4, tvb, offset+2, 4, ENC_BIG_ENDIAN);
proto_tree_add_item(community_tree, hf_bgp_ext_com_value_an2, tvb, offset+6, 2, ENC_BIG_ENDIAN);
proto_item_append_text(community_item, " %s %s: %s%s%u",
val_to_str_const(com_type_high_byte, bgpext_com_type_high, "Unknown"),
val_to_str_const(com_stype_low_byte, bgpext_com_stype_tr_IP4, "Unknown"),
tvb_ip_to_str(tvb, offset+2),":",tvb_get_ntohs(tvb,offset+6));
break;
case BGP_EXT_COM_TYPE_HIGH_NTR_IP4: /* Non-Transitive IPv4-Address-specific Extended Community */
proto_tree_add_item(community_tree, hf_bgp_ext_com_type_high, tvb, offset, 1, ENC_BIG_ENDIAN);
/* no subtype defined in IANA */
proto_tree_add_item(community_tree, hf_bgp_ext_com_value_IP4, tvb, offset+2, 4, ENC_BIG_ENDIAN);
proto_tree_add_item(community_tree, hf_bgp_ext_com_value_an2, tvb, offset+6, 2, ENC_BIG_ENDIAN);
proto_item_append_text(community_item, " %s: %s%s%u",
val_to_str_const(com_type_high_byte, bgpext_com_type_high, "Unknown"),
tvb_ip_to_str(tvb, offset+2),":",tvb_get_ntohs(tvb,offset+6));
break;
case BGP_EXT_COM_TYPE_HIGH_TR_AS4: /* Transitive Four-Octet AS-Specific Extended Community */
proto_tree_add_item(community_tree, hf_bgp_ext_com_type_high, tvb, offset, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(community_tree, hf_bgp_ext_com_stype_tr_as4, tvb, offset+1, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(community_tree, hf_bgp_ext_com_value_as4, tvb, offset+2, 4, ENC_BIG_ENDIAN);
proto_tree_add_item(community_tree, hf_bgp_ext_com_value_an2, tvb, offset+6, 2, ENC_BIG_ENDIAN);
proto_item_append_text(community_item, " %s %s: %u.%u(%u):%u",
val_to_str_const(com_type_high_byte, bgpext_com_type_high, "Unknown"),
val_to_str_const(com_stype_low_byte, bgpext_com_stype_tr_as4, "Unknown"),
tvb_get_ntohs(tvb,offset+2),tvb_get_ntohs(tvb,offset+4) ,tvb_get_ntohl(tvb,offset+2),
tvb_get_ntohs(tvb,offset+6));
break;
case BGP_EXT_COM_TYPE_HIGH_NTR_AS4: /* Non-Transitive Four-Octet AS-Specific Extended Community */
proto_tree_add_item(community_tree, hf_bgp_ext_com_type_high, tvb, offset, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(community_tree, hf_bgp_ext_com_stype_ntr_as4, tvb, offset+1, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(community_tree, hf_bgp_ext_com_value_as4, tvb, offset+2, 4, ENC_BIG_ENDIAN);
proto_tree_add_item(community_tree, hf_bgp_ext_com_value_an2, tvb, offset+6, 2, ENC_BIG_ENDIAN);
proto_item_append_text(community_item, " %s %s: %u.%u:%u",
val_to_str_const(com_type_high_byte, bgpext_com_type_high, "Unknown"),
val_to_str_const(com_stype_low_byte, bgpext_com_stype_ntr_as4, "Unknown"),
tvb_get_ntohs(tvb,offset+2),tvb_get_ntohs(tvb,offset+4), tvb_get_ntohs(tvb,offset+6));
break;
case BGP_EXT_COM_TYPE_HIGH_TR_OPAQUE: /* Transitive Opaque Extended Community */
proto_tree_add_item(community_tree, hf_bgp_ext_com_type_high, tvb, offset, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(community_tree, hf_bgp_ext_com_stype_tr_opaque, tvb, offset+1, 1, ENC_BIG_ENDIAN);
switch (com_stype_low_byte) {
case BGP_EXT_COM_STYPE_OPA_OSPF:
proto_tree_add_item(community_tree, hf_bgp_ext_com_value_IP4, tvb, offset+2, 4, ENC_BIG_ENDIAN);
proto_tree_add_item(community_tree, hf_bgp_ext_com_value_ospf_rtype, tvb, offset+6, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(community_tree, hf_bgp_ext_com_value_ospf_rtype_option, tvb, offset+7, 1, ENC_BIG_ENDIAN);
proto_item_append_text(community_item, " Area: %s, Type: %s", tvb_ip_to_str(tvb,offset+2),
val_to_str_const(tvb_get_guint8(tvb,offset+6),
bgpext_com_ospf_rtype, "Unknown"));
break;
case BGP_EXT_COM_STYPE_OPA_ENCAP:
tunnel_type = tvb_get_ntohs(tvb,offset+6);
proto_tree_add_item(community_tree, hf_bgp_ext_com_value_unknown32, tvb, offset+2, 4, ENC_BIG_ENDIAN);
proto_tree_add_item(community_tree, hf_bgp_ext_com_tunnel_type, tvb, offset+6, 2, ENC_BIG_ENDIAN);
proto_item_append_text(community_item, " %s %s: %s",
val_to_str_const(com_type_high_byte, bgpext_com_type_high, "Unknown"),
val_to_str_const(com_stype_low_byte, bgpext_com_stype_tr_opaque, "Unknown"),
val_to_str_const(tunnel_type, bgpext_com_tunnel_type, "Unknown"));
break;
case BGP_EXT_COM_STYPE_OPA_COLOR:
case BGP_EXT_COM_STYPE_OPA_DGTW:
default:
proto_tree_add_item(community_tree, hf_bgp_ext_com_value_unknown16, tvb, offset+2, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(community_tree, hf_bgp_ext_com_value_unknown32, tvb, offset+4, 4, ENC_BIG_ENDIAN);
proto_item_append_text(community_item, " %s %s: 0x%02x 0x%04x",
val_to_str_const(com_type_high_byte, bgpext_com_type_high, "Unknown"),
val_to_str_const(com_stype_low_byte, bgpext_com_stype_tr_opaque, "Unknown"),
tvb_get_ntohs(tvb,offset+2) ,tvb_get_ntohl(tvb,offset+4));
break;
}
break;
case BGP_EXT_COM_TYPE_HIGH_NTR_OPAQUE: /* Non-Transitive Opaque Extended Community */
proto_tree_add_item(community_tree, hf_bgp_ext_com_type_high, tvb, offset, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(community_tree, hf_bgp_ext_com_stype_ntr_opaque, tvb, offset+1, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(community_tree, hf_bgp_ext_com_value_unknown16, tvb, offset+2, 4, ENC_BIG_ENDIAN);
proto_tree_add_item(community_tree, hf_bgp_ext_com_value_unknown32, tvb, offset+6, 2, ENC_BIG_ENDIAN);
proto_item_append_text(community_item, " %s %s: 0x%02x 0x%04x",
val_to_str_const(com_type_high_byte, bgpext_com_type_high, "Unknown"),
val_to_str_const(com_stype_low_byte, bgpext_com_stype_ntr_opaque, "Unknown"),
tvb_get_ntohs(tvb,offset+2) ,tvb_get_ntohl(tvb,offset+4));
break;
case BGP_EXT_COM_TYPE_HIGH_TR_QOS: /* QoS Marking [Thomas_Martin_Knoll] */
case BGP_EXT_COM_TYPE_HIGH_NTR_QOS: /* QoS Marking [Thomas_Martin_Knoll] */
{
static const int * qos_flags[] = {
&hf_bgp_ext_com_qos_flags_remarking,
&hf_bgp_ext_com_qos_flags_ignore_remarking,
&hf_bgp_ext_com_qos_flags_agg_marking,
NULL
};
proto_tree_add_item(community_tree, hf_bgp_ext_com_type_high, tvb, offset, 1, ENC_BIG_ENDIAN);
proto_item_append_text(community_item, " %s: 0x%02x",val_to_str(com_type_high_byte, bgpext_com_type_high,
"Unknown type: 0x%02x"),com_type_high_byte);
proto_tree_add_bitmask(community_tree, tvb, offset, hf_bgp_ext_com_qos_flags, ett_bgp_ext_com_flags, qos_flags, ENC_BIG_ENDIAN);
proto_tree_add_item(community_tree, hf_bgp_ext_com_qos_set_number, tvb, offset+2, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(community_tree, hf_bgp_ext_com_qos_tech_type, tvb, offset+3, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(community_tree, hf_bgp_ext_com_qos_marking_o, tvb, offset+4, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(community_tree, hf_bgp_ext_com_qos_marking_a, tvb, offset+6, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(community_tree, hf_bgp_ext_com_qos_default_to_zero, tvb, offset+7, 1, ENC_BIG_ENDIAN);
}
break;
case BGP_EXT_COM_TYPE_HIGH_TR_COS: /* CoS Capability [Thomas_Martin_Knoll] */
proto_tree_add_item(community_tree, hf_bgp_ext_com_type_high, tvb, offset, 1, ENC_BIG_ENDIAN);
proto_item_append_text(community_item, " %s: 0x%02x",val_to_str(com_type_high_byte, bgpext_com_type_high,
"Unknown type: 0x%02x"),com_type_high_byte);
for (i=1; i < 8; i++) {
static const int * cos_flags[] = {
&hf_bgp_ext_com_cos_flags_be,
&hf_bgp_ext_com_cos_flags_ef,
&hf_bgp_ext_com_cos_flags_af,
&hf_bgp_ext_com_cos_flags_le,
NULL
};
proto_tree_add_bitmask(community_tree, tvb, offset+i, hf_bgp_ext_com_cos_flags, ett_bgp_ext_com_flags, cos_flags, ENC_BIG_ENDIAN);
}
break;
case BGP_EXT_COM_TYPE_HIGH_TR_EVPN: /* EVPN (Sub-Types are defined in the "EVPN Extended Community Sub-Types" registry) */
proto_tree_add_item(community_tree, hf_bgp_ext_com_type_high, tvb, offset, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(community_tree, hf_bgp_ext_com_stype_tr_evpn, tvb, offset+1, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(community_tree, hf_bgp_ext_com_l2_esi_label_flag, tvb, offset+2, 1, ENC_BIG_ENDIAN);
esi_label_flag = tvb_get_guint8(tvb, offset+2);
proto_tree_add_item(community_tree, hf_bgp_ext_com_value_unknown16, tvb, offset+3, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(community_tree, hf_bgp_update_mpls_label_value, tvb, offset+5, 3, ENC_BIG_ENDIAN);
proto_item_append_text(community_item, " %s %s: %s Label: %u",
val_to_str_const(com_type_high_byte, bgpext_com_type_high, "Unknown"),
val_to_str_const(com_stype_low_byte, bgpext_com_stype_tr_evpn, "Unknown"),
((esi_label_flag & BGP_EXT_COM_ESI_LABEL_FLAGS) == 0) ? "All active redundancy" : "Single Active redundancy",
tvb_get_ntoh24(tvb,offset+5));
break;
case BGP_EXT_COM_TYPE_HIGH_TR_EXP: /* Generic Transitive Experimental Extended Community */
proto_tree_add_item(community_tree, hf_bgp_ext_com_type_high, tvb, offset, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(community_tree, hf_bgp_ext_com_stype_tr_exp, tvb, offset+1, 1, ENC_BIG_ENDIAN);
proto_item_append_text(community_item, " %s %s",
val_to_str_const(com_type_high_byte, bgpext_com_type_high, "Unknown"),
val_to_str_const(com_stype_low_byte, bgpext_com_stype_tr_exp, "Unknown"));
switch (com_stype_low_byte) {
case BGP_EXT_COM_STYPE_EXP_F_TR: /* Flow spec traffic-rate [RFC5575] */
proto_tree_add_item(community_tree, hf_bgp_update_path_attribute_community_as,
tvb, offset+2, 2, ENC_BIG_ENDIAN);
/* remaining 4 bytes gives traffic rate in IEEE floating point */
proto_tree_add_item(community_tree, hf_bgp_ext_com_flow_rate_float, tvb, offset+4, 4, ENC_BIG_ENDIAN);
break;
case BGP_EXT_COM_STYPE_EXP_F_TA: /* Flow spec traffic-action [RFC5575] */
proto_tree_add_item(community_tree, hf_bgp_ext_com_flow_act_allset, tvb, offset+2, 5, ENC_NA);
proto_tree_add_item(community_tree, hf_bgp_ext_com_flow_act_samp_act, tvb, offset+7, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(community_tree, hf_bgp_ext_com_flow_act_term_act, tvb, offset+7, 1, ENC_BIG_ENDIAN);
break;
case BGP_EXT_COM_STYPE_EXP_F_RED: /* Flow spec redirect [RFC5575] */
proto_tree_add_item(community_tree, hf_bgp_ext_com_value_as2, tvb, offset+2, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(community_tree, hf_bgp_ext_com_value_an4, tvb, offset+4, 4, ENC_BIG_ENDIAN);
proto_item_append_text(community_item, " RT %u:%u", tvb_get_ntohs(tvb,offset+2), tvb_get_ntohl(tvb,offset+4));
break;
case BGP_EXT_COM_STYPE_EXP_F_RMARK: /* Flow spec traffic-remarking [RFC5575] */
proto_tree_add_item(community_tree, hf_bgp_ext_com_value_fs_remark, tvb, offset+7, 1, ENC_BIG_ENDIAN);
dscp_flags = tvb_get_guint8(tvb,offset+7);
proto_item_append_text(community_item, "%s", val_to_str_ext_const(dscp_flags,&dscp_vals_ext, "Unknown DSCP"));
break;
case BGP_EXT_COM_STYPE_EXP_L2:
{
static const int * com_l2_flags[] = {
&hf_bgp_ext_com_l2_flag_d,
&hf_bgp_ext_com_l2_flag_z1,
&hf_bgp_ext_com_l2_flag_f,
&hf_bgp_ext_com_l2_flag_z345,
&hf_bgp_ext_com_l2_flag_c,
&hf_bgp_ext_com_l2_flag_s,
NULL
};
proto_tree_add_item(community_tree, hf_bgp_ext_com_l2_encaps,tvb,offset+2, 1, ENC_BIG_ENDIAN);
proto_tree_add_bitmask(community_tree, tvb, offset+3, hf_bgp_ext_com_l2_c_flags, ett_bgp_ext_com_l2_flags, com_l2_flags, ENC_BIG_ENDIAN);
proto_tree_add_item(community_tree, hf_bgp_ext_com_l2_mtu, tvb, offset+4, 2, ENC_BIG_ENDIAN);
}
break;
}
break;
case BGP_EXT_COM_TYPE_HIGH_TR_EXP_FSIP4:
proto_tree_add_item(community_tree, hf_bgp_ext_com_type_high, tvb, offset, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(community_tree, hf_bgp_ext_com_stype_tr_exp_fs_ip4, tvb, offset+1, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(community_tree, hf_bgp_ext_com_value_IP4, tvb, offset+2, 4, ENC_NA);
proto_tree_add_item(community_tree, hf_bgp_ext_com_value_an2, tvb, offset+6, 2, ENC_BIG_ENDIAN);
proto_item_append_text(community_item, " %s %s: %s%s%u",
val_to_str_const(com_type_high_byte, bgpext_com_type_high, "Unknown"),
val_to_str_const(com_stype_low_byte, bgpext_com_stype_tr_exp_fs_ip4, "Unknown"),
tvb_ip_to_str(tvb, offset+2),":",tvb_get_ntohs(tvb,offset+6));
break;
case BGP_EXT_COM_TYPE_HIGH_TR_EXP_FSAS4:
proto_tree_add_item(community_tree, hf_bgp_ext_com_type_high, tvb, offset, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(community_tree, hf_bgp_ext_com_stype_tr_exp_fs_as4, tvb, offset+1, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(community_tree, hf_bgp_ext_com_value_as4, tvb, offset+2, 4, ENC_BIG_ENDIAN);
proto_tree_add_item(community_tree, hf_bgp_ext_com_value_an2, tvb, offset+6, 2, ENC_BIG_ENDIAN);
proto_item_append_text(community_item, " %s %s: %u.%u(%u):%u",
val_to_str_const(com_type_high_byte, bgpext_com_type_high, "Unknown"),
val_to_str_const(com_stype_low_byte, bgpext_com_stype_tr_exp_fs_as4, "Unknown"),
tvb_get_ntohs(tvb,offset+2),tvb_get_ntohs(tvb,offset+4) ,tvb_get_ntohl(tvb,offset+2),
tvb_get_ntohs(tvb,offset+6));
break;
case BGP_EXT_COM_TYPE_HIGH_TR_FLOW: /* Flow spec redirect/mirror to IP next-hop [draft-simpson-idr-flowspec-redirect] */
default:
proto_tree_add_item(community_tree, hf_bgp_ext_com_type_high, tvb, offset, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(community_tree, hf_bgp_ext_com_stype_low_unknown, tvb, offset+1, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(community_tree, hf_bgp_ext_com_value_unknown16, tvb, offset+2, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(community_tree, hf_bgp_ext_com_value_unknown32, tvb, offset+4, 4, ENC_BIG_ENDIAN);
proto_item_append_text(community_item, " %s : 0x%02x 0x%04x",
val_to_str_const(com_type_high_byte, bgpext_com_type_high, "Unknown"),
tvb_get_ntohs(tvb,offset+2) ,tvb_get_ntohl(tvb,offset+4));
break;
}
offset = offset + 8;
}
return(0);
}
static int
dissect_bgp_update_pmsi_attr(packet_info *pinfo, proto_tree *parent_tree, tvbuff_t *tvb, guint16 tlen, guint tvb_off)
{
int offset=0;
guint8 tunnel_type=0;
guint8 opaque_value_type=0;
guint8 rn_addr_length=0;
guint16 tunnel_id_len=0;
guint16 opaque_value_length=0;
proto_item *tunnel_id_item=NULL;
proto_item *opaque_value_type_item=NULL;
proto_item *pmsi_tunnel_type_item=NULL;
proto_tree *tunnel_id_tree=NULL;
offset = tvb_off ;
tunnel_id_len = tlen - 5;
proto_tree_add_item(parent_tree, hf_bgp_pmsi_tunnel_flags, tvb, offset,
1, ENC_BIG_ENDIAN);
pmsi_tunnel_type_item = proto_tree_add_item(parent_tree, hf_bgp_pmsi_tunnel_type, tvb, offset+1,
1, ENC_BIG_ENDIAN);
proto_tree_add_item(parent_tree, hf_bgp_update_mpls_label_value_20bits, tvb, offset+2, 3, ENC_BIG_ENDIAN);
tunnel_id_item = proto_tree_add_item(parent_tree, hf_bgp_pmsi_tunnel_id, tvb, offset+5,
tunnel_id_len, ENC_NA);
tunnel_id_tree = proto_item_add_subtree(tunnel_id_item, ett_bgp_pmsi_tunnel_id);
tunnel_type = tvb_get_guint8(tvb, offset+1);
switch(tunnel_type) {
case PMSI_TUNNEL_NOPRESENT:
proto_tree_add_item(tunnel_id_tree, hf_bgp_pmsi_tunnel_not_present, tvb, offset+1, 1, ENC_NA);
break;
case PMSI_TUNNEL_RSVPTE_P2MP:
proto_tree_add_item(tunnel_id_tree, hf_bgp_pmsi_tunnel_rsvp_p2mp_id, tvb, offset+5, 4, ENC_NA);
proto_tree_add_item(tunnel_id_tree, hf_bgp_pmsi_tunnel_rsvp_p2mp_tunnel_id, tvb, offset+11, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tunnel_id_tree, hf_bgp_pmsi_tunnel_rsvp_p2mp_ext_tunnel_idv4, tvb, offset+13, 4, ENC_NA);
proto_item_append_text(tunnel_id_item, ": Id %u, Ext Id %s",
tvb_get_ntohs(tvb, offset+11), tvb_ip_to_str(tvb, offset+13));
break;
case PMSI_TUNNEL_MLDP_P2MP:
case PMSI_TUNNEL_MLDP_MP2MP:
proto_tree_add_item(tunnel_id_tree, hf_bgp_pmsi_tunnel_mldp_fec_el_type, tvb, offset+5, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(tunnel_id_tree, hf_bgp_pmsi_tunnel_mldp_fec_el_afi, tvb, offset+6, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tunnel_id_tree, hf_bgp_pmsi_tunnel_mldp_fec_el_adr_len, tvb, offset+8, 1, ENC_BIG_ENDIAN);
rn_addr_length = tvb_get_guint8(tvb, offset+8);
if( rn_addr_length ==4)
proto_tree_add_item(tunnel_id_tree, hf_bgp_pmsi_tunnel_mldp_fec_el_root_nodev4, tvb, offset+9, 4, ENC_NA);
else
proto_tree_add_item(tunnel_id_tree, hf_bgp_pmsi_tunnel_mldp_fec_el_root_nodev6, tvb, offset+9, 4, ENC_NA);
proto_tree_add_item(tunnel_id_tree, hf_bgp_pmsi_tunnel_mldp_fec_el_opa_len, tvb, offset+9+rn_addr_length, 2, ENC_BIG_ENDIAN);
opaque_value_type_item = proto_tree_add_item(tunnel_id_tree, hf_bgp_pmsi_tunnel_mldp_fec_el_opa_val_type,
tvb, offset+11+rn_addr_length, 1, ENC_BIG_ENDIAN);
opaque_value_type = tvb_get_guint8(tvb, offset+11+rn_addr_length);
if(opaque_value_type == PMSI_MLDP_FEC_TYPE_GEN_LSP) {
proto_tree_add_item(tunnel_id_tree, hf_bgp_pmsi_tunnel_mldp_fec_el_opa_val_len, tvb, offset+12+rn_addr_length, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tunnel_id_tree, hf_bgp_pmsi_tunnel_mldp_fec_el_opa_value_rn, tvb, offset+14+rn_addr_length, 4, ENC_BIG_ENDIAN);
proto_item_append_text(tunnel_id_item, ": Type: %s root node: %s Id: %u",
val_to_str_const(tvb_get_guint8(tvb, offset+5), fec_types_vals, "Unknown"),
tvb_ip_to_str(tvb, offset+9),
tvb_get_ntohl(tvb, offset+14+rn_addr_length));
} else if (opaque_value_type == PMSI_MLDP_FEC_TYPE_EXT_TYPE) {
proto_tree_add_item(tunnel_id_tree, hf_bgp_pmsi_tunnel_mldp_fec_el_opa_val_ext_type, tvb, offset+12+rn_addr_length, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tunnel_id_tree, hf_bgp_pmsi_tunnel_mldp_fec_el_opa_val_ext_len, tvb, offset+14+rn_addr_length, 2, ENC_BIG_ENDIAN);
opaque_value_length = tvb_get_ntohs(tvb, offset+14+rn_addr_length);
proto_tree_add_item(tunnel_id_tree, hf_bgp_pmsi_tunnel_mldp_fec_el_opa_value_str, tvb, offset+16+rn_addr_length,
opaque_value_length, ENC_ASCII|ENC_NA);
}
else {
/* This covers situation when opaque id is 0 (reserved) or any other value */
expert_add_info_format(pinfo, opaque_value_type_item, &ei_bgp_attr_pmsi_opaque_type,
"Opaque Value type %u wrong, must be modulo 1 or 255", opaque_value_type);
}
break;
case PMSI_TUNNEL_PIMSSM:
proto_tree_add_item(tunnel_id_tree, hf_bgp_pmsi_tunnel_pimssm_root_node, tvb, offset+5, 4, ENC_BIG_ENDIAN);
proto_tree_add_item(tunnel_id_tree, hf_bgp_pmsi_tunnel_pimssm_pmc_group, tvb, offset+9, 4, ENC_BIG_ENDIAN);
proto_item_append_text(tunnel_id_item, ": < %s, %s >",
tvb_ip_to_str(tvb, offset+5),
tvb_ip_to_str(tvb, offset+9));
break;
case PMSI_TUNNEL_PIMSM:
proto_tree_add_item(tunnel_id_tree, hf_bgp_pmsi_tunnel_pimsm_sender, tvb, offset+5, 4, ENC_BIG_ENDIAN);
proto_tree_add_item(tunnel_id_tree, hf_bgp_pmsi_tunnel_pimsm_pmc_group, tvb, offset+9, 4, ENC_BIG_ENDIAN);
proto_item_append_text(tunnel_id_item, ": < %s, %s >",
tvb_ip_to_str(tvb, offset+5),
tvb_ip_to_str(tvb, offset+9));
break;
case PMSI_TUNNEL_BIDIR_PIM:
proto_tree_add_item(tunnel_id_tree, hf_bgp_pmsi_tunnel_pimbidir_sender, tvb, offset+5, 4, ENC_BIG_ENDIAN);
proto_tree_add_item(tunnel_id_tree, hf_bgp_pmsi_tunnel_pimbidir_pmc_group, tvb, offset+9, 4, ENC_BIG_ENDIAN);
proto_item_append_text(tunnel_id_item, ": < %s, %s >",
tvb_ip_to_str(tvb, offset+5),
tvb_ip_to_str(tvb, offset+9));
break;
case PMSI_TUNNEL_INGRESS:
proto_tree_add_item(tunnel_id_tree, hf_bgp_pmsi_tunnel_ingress_rep_addr, tvb, offset+5, 4, ENC_BIG_ENDIAN);
proto_item_append_text(tunnel_id_item, ": tunnel end point -> %s",
tvb_ip_to_str(tvb, offset+5));
break;
default:
expert_add_info_format(pinfo, pmsi_tunnel_type_item, &ei_bgp_attr_pmsi_tunnel_type,
"Tunnel type %u wrong", tunnel_type);
break;
}
return(0);
}
/*
* Dissect BGP path attributes
*
*/
static void
dissect_bgp_path_attr(proto_tree *subtree, tvbuff_t *tvb, guint16 path_attr_len, guint tvb_off, packet_info *pinfo)
{
guint8 bgpa_flags; /* path attributes */
guint8 bgpa_type;
gint o; /* packet offset */
gint q=0; /* tmp */
gint end=0; /* message end */
int advance; /* tmp */
proto_item *ti; /* tree item */
proto_item *ti_communities; /* tree communities */
proto_item *ti_community; /* tree for each community */
proto_item *attr_len_item;
proto_item *aigp_type_item;
proto_tree *subtree2; /* path attribute subtree */
proto_tree *subtree3; /* subtree for attributes */
proto_tree *subtree4; /* subtree for attributes */
proto_tree *subtree5; /* subtree for attributes */
proto_tree *subtree6; /* subtree for attributes */
proto_tree *attr_set_subtree; /* subtree for attr_set */
proto_tree *as_path_segment_tree; /* subtree for AS_PATH segments */
gint number_as_segment=0; /* Number As segment */
proto_tree *communities_tree; /* subtree for COMMUNITIES */
proto_tree *community_tree; /* subtree for a community */
proto_tree *cluster_list_tree; /* subtree for CLUSTER_LIST */
int i=0, j, k; /* tmp */
guint8 type=0; /* AS_PATH segment type */
guint8 length=0; /* AS_PATH segment length */
wmem_strbuf_t *junk_emstr; /* tmp */
guint32 aggregator_as;
guint16 ssa_type; /* SSA T + Type */
guint16 ssa_len; /* SSA TLV Length */
guint8 ssa_v3_len; /* SSA L2TPv3 Cookie Length */
guint16 encaps_tunnel_type; /* Encapsulation Tunnel Type */
guint16 encaps_tunnel_len; /* Encapsulation TLV Length */
guint8 encaps_tunnel_subtype; /* Encapsulation Tunnel Sub-TLV Type */
guint8 encaps_tunnel_sublen; /* Encapsulation TLV Sub-TLV Length */
guint8 aigp_type; /* AIGP TLV type from AIGP attribute */
o = tvb_off;
junk_emstr = wmem_strbuf_new_label(wmem_packet_scope());
while (i < path_attr_len) {
proto_item *ti_pa, *ti_flags;
int off;
guint16 alen, aoff, tlen, aoff_save;
guint16 af;
guint8 saf, snpa;
guint8 nexthop_len;
guint8 asn_len = 0;
static const int * path_flags[] = {
&hf_bgp_update_path_attribute_flags_optional,
&hf_bgp_update_path_attribute_flags_transitive,
&hf_bgp_update_path_attribute_flags_partial,
&hf_bgp_update_path_attribute_flags_extended_length,
NULL
};
bgpa_flags = tvb_get_guint8(tvb, o + i);
bgpa_type = tvb_get_guint8(tvb, o + i+1);
/* check for the Extended Length bit */
if (bgpa_flags & BGP_ATTR_FLAG_EXTENDED_LENGTH) {
alen = tvb_get_ntohs(tvb, o + i + BGP_SIZE_OF_PATH_ATTRIBUTE);
aoff = BGP_SIZE_OF_PATH_ATTRIBUTE+2;
} else {
alen = tvb_get_guint8(tvb, o + i + BGP_SIZE_OF_PATH_ATTRIBUTE);
aoff = BGP_SIZE_OF_PATH_ATTRIBUTE+1;
}
tlen = alen;
ti_pa = proto_tree_add_item(subtree, hf_bgp_update_path_attribute, tvb, o + i, tlen + aoff, ENC_NA);
proto_item_append_text(ti_pa, " - %s", val_to_str(bgpa_type, bgpattr_type, "Unknown (%u)"));
subtree2 = proto_item_add_subtree(ti_pa, ett_bgp_attr);
ti_flags = proto_tree_add_bitmask(subtree2, tvb, o + i, hf_bgp_update_path_attribute_flags, ett_bgp_attr_flags, path_flags, ENC_NA);
proto_item_append_text(ti_flags,"%s%s%s%s",
((bgpa_flags & BGP_ATTR_FLAG_OPTIONAL) == 0) ? ": Well-known" : ": Optional",
((bgpa_flags & BGP_ATTR_FLAG_TRANSITIVE) == 0) ? ", Non-transitive" : ", Transitive",
((bgpa_flags & BGP_ATTR_FLAG_PARTIAL) == 0) ? ", Complete" : ", Partial",
((bgpa_flags & BGP_ATTR_FLAG_EXTENDED_LENGTH) == 0) ? "" : ", Extended Length");
proto_tree_add_item(subtree2, hf_bgp_update_path_attribute_type_code, tvb, o + i + 1, 1, ENC_BIG_ENDIAN);
attr_len_item = proto_tree_add_item(subtree2, hf_bgp_update_path_attribute_length, tvb, o + i + BGP_SIZE_OF_PATH_ATTRIBUTE,
aoff - BGP_SIZE_OF_PATH_ATTRIBUTE, ENC_BIG_ENDIAN);
/* Path Attribute Type */
switch (bgpa_type) {
case BGPTYPE_ORIGIN:
if (tlen != 1) {
proto_tree_add_expert_format(subtree2, pinfo, &ei_bgp_length_invalid, tvb, o + i + aoff, tlen,
"Origin (invalid): %u byte%s", tlen,
plurality(tlen, "", "s"));
} else {
proto_tree_add_item(subtree2, hf_bgp_update_path_attribute_origin, tvb,
o + i + aoff, 1, ENC_BIG_ENDIAN);
proto_item_append_text(ti_pa, ": %s", val_to_str_const(tvb_get_guint8(tvb, o + i + aoff), bgpattr_origin, "Unknown"));
}
break;
case BGPTYPE_AS_PATH:
case BGPTYPE_AS4_PATH:
/* Apply heuristic to guess if we are facing 2 or 4 bytes ASN
(o + i + aoff) =
(o + current attribute + aoff bytes to first tuple)
heuristic also tell us how many AS segments we have */
asn_len = heuristic_as2_or_4_from_as_path(tvb, o+i+aoff, o+i+aoff+tlen,
bgpa_type, &number_as_segment);
if (asn_len == 255)
{
expert_add_info_format(pinfo, ti_pa, &ei_bgp_attr_as_path_as_len_err,
"ASN length uncalculated by heuristic : %u", asn_len);
break;
}
proto_item_append_text(ti_pa,": ");
if(tlen == 0) {
proto_item_append_text(ti_pa,"empty");
}
q = o + i + aoff;
for (k=0; k < number_as_segment; k++)
{
type = tvb_get_guint8(tvb, q);
length = tvb_get_guint8(tvb, q+1);
ti = proto_tree_add_item(subtree2, hf_bgp_update_path_attribute_as_path_segment, tvb,
q, length * asn_len + 2, ENC_NA);
proto_item_append_text(ti,": ");
as_path_segment_tree = proto_item_add_subtree(ti, ett_bgp_as_path_segment);
proto_tree_add_item(as_path_segment_tree, hf_bgp_update_path_attribute_as_path_segment_type, tvb,
q, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(as_path_segment_tree, hf_bgp_update_path_attribute_as_path_segment_length, tvb,
q+1, 1, ENC_BIG_ENDIAN);
switch(type)
{
case AS_SET:
proto_item_append_text(ti_pa, "{");
proto_item_append_text(ti, "{");
break;
case AS_CONFED_SET:
proto_item_append_text(ti_pa, "[");
proto_item_append_text(ti, "[");
break;
case AS_CONFED_SEQUENCE:
proto_item_append_text(ti_pa, "(");
proto_item_append_text(ti, "(");
break;
}
q = q + 2;
for (j = 0; j < length; j++)
{
if(asn_len == 2) {
proto_tree_add_item(as_path_segment_tree,
hf_bgp_update_path_attribute_as_path_segment_as2,
tvb, q, 2, ENC_BIG_ENDIAN);
proto_item_append_text(ti_pa, "%u",
tvb_get_ntohs(tvb, q));
proto_item_append_text(ti, "%u",
tvb_get_ntohs(tvb, q));
}
else if (asn_len == 4) {
proto_tree_add_item(as_path_segment_tree,
hf_bgp_update_path_attribute_as_path_segment_as4,
tvb, q, 4, ENC_BIG_ENDIAN);
proto_item_append_text(ti_pa, "%u",
tvb_get_ntohl(tvb, q));
proto_item_append_text(ti, "%u",
tvb_get_ntohl(tvb, q));
}
if (j != length-1)
{
proto_item_append_text(ti_pa, "%s",
(type == AS_SET || type == AS_CONFED_SET) ?
", " : " ");
proto_item_append_text(ti, "%s",
(type == AS_SET || type == AS_CONFED_SET) ?
", " : " ");
}
q += asn_len;
}
switch(type)
{
case AS_SET:
proto_item_append_text(ti_pa, "} ");
proto_item_append_text(ti, "}");
break;
case AS_CONFED_SET:
proto_item_append_text(ti_pa, "] ");
proto_item_append_text(ti, "]");
break;
case AS_CONFED_SEQUENCE:
proto_item_append_text(ti_pa, ") ");
proto_item_append_text(ti, ")");
break;
default:
proto_item_append_text(ti_pa, " ");
break;
}
}
break;
case BGPTYPE_NEXT_HOP:
if (tlen != 4) {
proto_tree_add_expert_format(subtree2, pinfo, &ei_bgp_length_invalid, tvb, o + i + aoff, tlen,
"Next hop (invalid): %u byte%s", tlen,
plurality(tlen, "", "s"));
} else {
proto_tree_add_item(subtree2, hf_bgp_update_path_attribute_next_hop, tvb,
o + i + aoff, 4, ENC_BIG_ENDIAN);
proto_item_append_text(ti_pa, ": %s ", tvb_ip_to_str(tvb, o + i + aoff));
}
break;
case BGPTYPE_MULTI_EXIT_DISC:
if (tlen != 4) {
proto_tree_add_expert_format(subtree2, pinfo, &ei_bgp_length_invalid, tvb, o + i + aoff, tlen,
"Multiple exit discriminator (invalid): %u byte%s",
tlen, plurality(tlen, "", "s"));
} else {
proto_tree_add_item(subtree2, hf_bgp_update_path_attribute_multi_exit_disc, tvb,
o + i + aoff, tlen, ENC_BIG_ENDIAN);
proto_item_append_text(ti_pa,": %u", tvb_get_ntohl(tvb, o + i + aoff));
}
break;
case BGPTYPE_LOCAL_PREF:
if (tlen != 4) {
proto_tree_add_expert_format(subtree2, pinfo, &ei_bgp_length_invalid, tvb, o + i + aoff, tlen,
"Local preference (invalid): %u byte%s", tlen,
plurality(tlen, "", "s"));
} else {
proto_tree_add_item(subtree2, hf_bgp_update_path_attribute_local_pref, tvb,
o + i + aoff, tlen, ENC_BIG_ENDIAN);
proto_item_append_text(ti_pa, ": %u", tvb_get_ntohl(tvb, o + i + aoff));
}
break;
case BGPTYPE_ATOMIC_AGGREGATE:
if (tlen != 0) {
proto_tree_add_expert_format(subtree2, pinfo, &ei_bgp_length_invalid, tvb, o + i + aoff, tlen,
"Atomic aggregate (invalid): %u byte%s", tlen,
plurality(tlen, "", "s"));
}
break;
case BGPTYPE_AGGREGATOR:
if (tlen != 6 && tlen != 8) {
proto_tree_add_expert_format(subtree2, pinfo, &ei_bgp_length_invalid, tvb, o + i + aoff, tlen,
"Aggregator (invalid): %u byte%s", tlen,
plurality(tlen, "", "s"));
break;
}
case BGPTYPE_AS4_AGGREGATOR:
if (bgpa_type == BGPTYPE_AS4_AGGREGATOR && tlen != 8)
proto_tree_add_expert_format(subtree2, pinfo, &ei_bgp_length_invalid, tvb, o + i + aoff, tlen,
"Aggregator (invalid): %u byte%s", tlen,
plurality(tlen, "", "s"));
else {
asn_len = tlen - 4;
aggregator_as = (asn_len == 2) ?
tvb_get_ntohs(tvb, o + i + aoff) :
tvb_get_ntohl(tvb, o + i + aoff);
proto_tree_add_uint(subtree2, hf_bgp_update_path_attribute_aggregator_as, tvb,
o + i + aoff, asn_len, aggregator_as);
proto_tree_add_item(subtree2, hf_bgp_update_path_attribute_aggregator_origin, tvb,
o + i + aoff + asn_len, 4, ENC_BIG_ENDIAN);
proto_item_append_text(ti_pa, ": AS: %u origin: %s", aggregator_as,
tvb_ip_to_str(tvb, o + i + aoff + asn_len));
}
break;
case BGPTYPE_COMMUNITIES:
if (tlen % 4 != 0) {
proto_tree_add_expert_format(subtree2, pinfo, &ei_bgp_length_invalid, tvb, o + i + aoff, tlen,
"Communities (invalid): %u byte%s", tlen,
plurality(tlen, "", "s"));
break;
}
proto_item_append_text(ti_pa, ": ");
ti_communities = proto_tree_add_item(subtree2, hf_bgp_update_path_attribute_communities,
tvb, o + i + aoff, tlen, ENC_NA);
communities_tree = proto_item_add_subtree(ti_communities,
ett_bgp_communities);
proto_item_append_text(ti_communities, ": ");
/* (o + i + aoff) =
(o + current attribute + aoff bytes to first tuple) */
q = o + i + aoff;
end = q + tlen;
/* snarf each community */
while (q < end) {
/* check for reserved values */
guint32 community = tvb_get_ntohl(tvb, q);
if ((community & 0xFFFF0000) == FOURHEX0 ||
(community & 0xFFFF0000) == FOURHEXF) {
proto_tree_add_item(communities_tree, hf_bgp_update_path_attribute_community_well_known,
tvb, q - 3 + aoff, 4, ENC_BIG_ENDIAN);
proto_item_append_text(ti_pa, "%s ", val_to_str_const(community, community_vals, "Reserved"));
proto_item_append_text(ti_communities, "%s ", val_to_str_const(community, community_vals, "Reserved"));
}
else {
ti_community = proto_tree_add_item(communities_tree, hf_bgp_update_path_attribute_community, tvb,
q - 3 + aoff, 4, ENC_NA);
community_tree = proto_item_add_subtree(ti_community,
ett_bgp_community);
proto_tree_add_item(community_tree, hf_bgp_update_path_attribute_community_as,
tvb, q - 3 + aoff, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(community_tree, hf_bgp_update_path_attribute_community_value,
tvb, q - 1 + aoff, 2, ENC_BIG_ENDIAN);
proto_item_append_text(ti_pa, "%u:%u ",tvb_get_ntohs(tvb, q - 3 + aoff),
tvb_get_ntohs(tvb, q -1 + aoff));
proto_item_append_text(ti_communities, "%u:%u ",tvb_get_ntohs(tvb, q - 3 + aoff),
tvb_get_ntohs(tvb, q -1 + aoff));
proto_item_append_text(ti_community, ": %u:%u ",tvb_get_ntohs(tvb, q - 3 + aoff),
tvb_get_ntohs(tvb, q -1 + aoff));
}
q += 4;
}
break;
case BGPTYPE_ORIGINATOR_ID:
if (tlen != 4) {
proto_tree_add_expert_format(subtree2, pinfo, &ei_bgp_length_invalid, tvb, o + i + aoff, tlen,
"Originator identifier (invalid): %u byte%s", tlen,
plurality(tlen, "", "s"));
} else {
proto_tree_add_item(subtree2, hf_bgp_update_path_attribute_originator_id, tvb,
o + i + aoff, tlen, ENC_BIG_ENDIAN);
proto_item_append_text(ti_pa, ": %s ", tvb_ip_to_str(tvb, o + i + aoff));
}
break;
case BGPTYPE_MP_REACH_NLRI:
/*
* RFC 2545 specifies that there may be more than one
* address in the MP_REACH_NLRI attribute in section
* 3, "Constructing the Next Hop field".
*
* Yes, RFC 2858 says you can't do that, and, yes, RFC
* 2858 obsoletes RFC 2283, which says you can do that,
* but that doesn't mean we shouldn't dissect packets
* that conform to RFC 2283 but not RFC 2858, as some
* device on the network might implement the 2283-style
* BGP extensions rather than RFC 2858-style extensions.
*/
af = tvb_get_ntohs(tvb, o + i + aoff);
proto_tree_add_item(subtree2, hf_bgp_update_path_attribute_mp_reach_nlri_address_family, tvb,
o + i + aoff, 2, ENC_BIG_ENDIAN);
saf = tvb_get_guint8(tvb, o + i + aoff + 2) ;
proto_tree_add_item(subtree2, hf_bgp_update_path_attribute_mp_reach_nlri_safi, tvb,
o + i + aoff+2, 1, ENC_BIG_ENDIAN);
nexthop_len = tvb_get_guint8(tvb, o + i + aoff + 3);
subtree3 = proto_tree_add_subtree_format(subtree2, tvb, o + i + aoff + 3,
nexthop_len + 1, ett_bgp_mp_nhna, NULL,
"Next hop network address (%d byte%s)",
nexthop_len, plurality(nexthop_len, "", "s"));
/*
* The addresses don't contain lengths, so if we
* don't understand the address family type, we
* cannot parse the subsequent addresses as we
* don't know how long they are.
*/
switch (af) {
default:
proto_tree_add_expert(subtree3, pinfo, &ei_bgp_unknown_afi, tvb, o + i + aoff + 4, nexthop_len);
break;
case AFNUM_INET:
case AFNUM_INET6:
case AFNUM_L2VPN:
case AFNUM_L2VPN_OLD:
case AFNUM_LINK_STATE:
j = 0;
while (j < nexthop_len) {
advance = mp_addr_to_str(af, saf, tvb, o + i + aoff + 4 + j,
junk_emstr, nexthop_len) ;
if (advance == 0) /* catch if this is a unknown AFI type*/
break;
if (j + advance > nexthop_len)
break;
proto_tree_add_string(subtree3, hf_bgp_update_path_attribute_mp_reach_nlri_next_hop, tvb,
o + i + aoff + 4 + j, advance, wmem_strbuf_get_str(junk_emstr));
j += advance;
}
break;
} /* switch (af) */
aoff_save = aoff;
tlen -= nexthop_len + 4;
aoff += nexthop_len + 4 ;
off = 0;
snpa = tvb_get_guint8(tvb, o + i + aoff);
ti = proto_tree_add_item(subtree2, hf_bgp_update_path_attribute_mp_reach_nlri_nbr_snpa, tvb,
o + i + aoff, 1, ENC_BIG_ENDIAN);
off++;
if (snpa) {
subtree3 = proto_item_add_subtree(ti, ett_bgp_mp_snpa);
for (/*nothing*/; snpa > 0; snpa--) {
guint8 snpa_length = tvb_get_guint8(tvb, o + i + aoff + off);
proto_tree_add_item(subtree3, hf_bgp_update_path_attribute_mp_reach_nlri_snpa_length, tvb,
o + i + aoff + off, 1, ENC_BIG_ENDIAN);
off++;
proto_tree_add_item(subtree3, hf_bgp_update_path_attribute_mp_reach_nlri_snpa, tvb,
o + i + aoff + off, snpa_length, ENC_NA);
off += snpa_length;
}
}
tlen -= off;
aoff += off;
subtree3 = proto_tree_add_subtree_format(subtree2, tvb, o + i + aoff, tlen,
ett_bgp_mp_reach_nlri, NULL, "Network layer reachability information (%u byte%s)",
tlen, plurality(tlen, "", "s"));
if (tlen) {
if (af != AFNUM_INET && af != AFNUM_INET6 && af != AFNUM_L2VPN && af != AFNUM_LINK_STATE) {
proto_tree_add_expert(subtree3, pinfo, &ei_bgp_unknown_afi, tvb, o + i + aoff, tlen);
} else {
while (tlen > 0) {
advance = decode_prefix_MP(subtree3,
hf_bgp_mp_reach_nlri_ipv4_prefix,
hf_bgp_mp_reach_nlri_ipv6_prefix,
af, saf,
tvb, o + i + aoff, "MP Reach NLRI", pinfo);
if (advance < 0)
break;
tlen -= advance;
aoff += advance;
}
}
}
aoff = aoff_save;
break;
case BGPTYPE_MP_UNREACH_NLRI:
af = tvb_get_ntohs(tvb, o + i + aoff);
proto_tree_add_item(subtree2, hf_bgp_update_path_attribute_mp_unreach_nlri_address_family, tvb,
o + i + aoff, 2, ENC_BIG_ENDIAN);
saf = tvb_get_guint8(tvb, o + i + aoff + 2) ;
proto_tree_add_item(subtree2, hf_bgp_update_path_attribute_mp_unreach_nlri_safi, tvb,
o + i + aoff+2, 1, ENC_BIG_ENDIAN);
subtree3 = proto_tree_add_subtree_format(subtree2, tvb, o + i + aoff + 3,
tlen - 3, ett_bgp_mp_unreach_nlri, NULL, "Withdrawn routes (%u byte%s)", tlen - 3,
plurality(tlen - 3, "", "s"));
aoff_save = aoff;
tlen -= 3;
aoff += 3;
if (tlen > 0) {
while (tlen > 0) {
advance = decode_prefix_MP(subtree3,
hf_bgp_mp_unreach_nlri_ipv4_prefix,
hf_bgp_mp_unreach_nlri_ipv6_prefix,
af, saf,
tvb, o + i + aoff, "MP Unreach NLRI", pinfo);
if (advance < 0)
break;
tlen -= advance;
aoff += advance;
}
}
aoff = aoff_save;
break;
case BGPTYPE_CLUSTER_LIST:
if (tlen % 4 != 0) {
proto_tree_add_expert_format(subtree2, pinfo, &ei_bgp_length_invalid, tvb, o + i + aoff, tlen,
"Cluster list (invalid): %u byte%s", tlen,
plurality(tlen, "", "s"));
break;
}
ti = proto_tree_add_item(subtree2, hf_bgp_update_path_attribute_cluster_list,
tvb, o + i + aoff, tlen, ENC_NA);
cluster_list_tree = proto_item_add_subtree(ti,
ett_bgp_cluster_list);
/* (o + i + aoff) =
(o + current attribute + aoff bytes to first tuple) */
q = o + i + aoff;
end = q + tlen;
proto_item_append_text(ti, ":");
proto_item_append_text(ti_pa, ":");
/* snarf each cluster identifier */
while (q < end) {
proto_tree_add_item(cluster_list_tree, hf_bgp_update_path_attribute_cluster_id,
tvb, q - 3 + aoff, 4, ENC_NA);
proto_item_append_text(ti, " %s", tvb_ip_to_str(tvb, q-3+aoff));
proto_item_append_text(ti_pa, " %s", tvb_ip_to_str(tvb, q-3+aoff));
q += 4;
}
break;
case BGPTYPE_EXTENDED_COMMUNITY:
if (tlen %8 != 0) {
expert_add_info_format(pinfo, attr_len_item, &ei_bgp_ext_com_len_bad,
"Community length %u wrong, must be modulo 8", tlen);
} else {
dissect_bgp_update_ext_com(subtree2, tvb, tlen, o+i+aoff);
}
break;
case BGPTYPE_SAFI_SPECIFIC_ATTR:
q = o + i + aoff;
end = o + i + aoff + tlen ;
while(q < end) {
ssa_type = tvb_get_ntohs(tvb, q) & BGP_SSA_TYPE;
ssa_len = tvb_get_ntohs(tvb, q + 2);
subtree3 = proto_tree_add_subtree_format(subtree2, tvb, q, MIN(ssa_len + 4, end - q),
ett_bgp_ssa, NULL, "%s Information",
val_to_str_const(ssa_type, bgp_ssa_type, "Unknown SSA"));
proto_tree_add_item(subtree3, hf_bgp_ssa_t, tvb,
q, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(subtree3, hf_bgp_ssa_type, tvb, q, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(subtree3, hf_bgp_ssa_len, tvb, q + 2, 2, ENC_BIG_ENDIAN);
if ((ssa_len == 0) || (q + ssa_len > end)) {
proto_tree_add_expert_format(subtree3, pinfo, &ei_bgp_length_invalid, tvb, q + 2,
end - q - 2, "Invalid Length of %u", ssa_len);
break;
}
switch (ssa_type) {
case BGP_SSA_L2TPv3:
proto_tree_add_item(subtree3, hf_bgp_ssa_l2tpv3_pref, tvb,
q + 4, 2, ENC_BIG_ENDIAN);
subtree4 = proto_tree_add_subtree(subtree3, tvb, q + 6, 1, ett_bgp_ssa_subtree, NULL, "Flags");
proto_tree_add_item(subtree4, hf_bgp_ssa_l2tpv3_s, tvb,
q + 6, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(subtree4, hf_bgp_ssa_l2tpv3_unused, tvb,
q + 6, 1, ENC_BIG_ENDIAN);
ssa_v3_len = tvb_get_guint8(tvb, q + 7);
if (ssa_v3_len + 8 == ssa_len){
proto_tree_add_item(subtree3, hf_bgp_ssa_l2tpv3_cookie_len, tvb,
q + 7, 1, ENC_BIG_ENDIAN);
} else {
proto_tree_add_expert_format(subtree3, pinfo, &ei_bgp_length_invalid, tvb, q + 7, 1,
"Invalid Cookie Length of %u", ssa_v3_len);
q += ssa_len + 4; /* 4 from type and length */
break;
}
proto_tree_add_item(subtree3, hf_bgp_ssa_l2tpv3_session_id, tvb,
q + 8, 4, ENC_BIG_ENDIAN);
if (ssa_v3_len)
proto_tree_add_item(subtree3, hf_bgp_ssa_l2tpv3_cookie, tvb,
q + 12, ssa_v3_len, ENC_NA);
q += ssa_len + 4; /* 4 from type and length */
break;
case BGP_SSA_mGRE:
case BGP_SSA_IPSec:
case BGP_SSA_MPLS:
default:
proto_tree_add_item(subtree3, hf_bgp_ssa_value, tvb,
q + 4, ssa_len, ENC_NA);
q += ssa_len + 4; /* 4 from type and length */
break;
case BGP_SSA_L2TPv3_IN_IPSec:
case BGP_SSA_mGRE_IN_IPSec:
/* These contain BGP_SSA_IPSec and BGP_SSA_L2TPv3/BGP_SSA_mGRE */
q += 4; /* 4 from type and length */
break;
} /* switch (bgpa.bgpa_type) */
}
break;
case BGPTYPE_TUNNEL_ENCAPS_ATTR:
q = o + i + aoff;
end = o + i + aoff + tlen;
subtree3 = proto_tree_add_subtree(subtree2, tvb, q, tlen, ett_bgp_tunnel_tlv, NULL, "TLV Encodings");
while (q < end) {
encaps_tunnel_type = tvb_get_ntohs(tvb, q);
encaps_tunnel_len = tvb_get_ntohs(tvb, q + 2);
subtree4 = proto_tree_add_subtree_format(subtree3, tvb, q, encaps_tunnel_len + 4,
ett_bgp_tunnel_tlv_subtree, NULL, "%s (%u bytes)",
val_to_str_const(encaps_tunnel_type, bgp_attr_tunnel_type, "Unknown"), encaps_tunnel_len + 4);
proto_tree_add_item(subtree4, hf_bgp_update_encaps_tunnel_tlv_type, tvb, q, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(subtree4, hf_bgp_update_encaps_tunnel_tlv_len, tvb, q + 2, 2, ENC_BIG_ENDIAN);
subtree5 = proto_tree_add_subtree(subtree4, tvb, q + 4, encaps_tunnel_len, ett_bgp_tunnel_subtlv, NULL, "Sub-TLV Encodings");
q += 4;
j = q + encaps_tunnel_len;
while ( q < j ) {
encaps_tunnel_subtype = tvb_get_guint8(tvb, q);
encaps_tunnel_sublen = tvb_get_guint8(tvb, q + 1);
subtree6 = proto_tree_add_subtree_format(subtree5, tvb, q, encaps_tunnel_sublen + 2, ett_bgp_tunnel_tlv_subtree, NULL, "%s (%u bytes)", val_to_str_const(encaps_tunnel_subtype, subtlv_type, "Unknown"), encaps_tunnel_sublen + 2);
proto_tree_add_item(subtree6, hf_bgp_update_encaps_tunnel_subtlv_type, tvb, q, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(subtree6, hf_bgp_update_encaps_tunnel_subtlv_len, tvb, q + 1, 1, ENC_BIG_ENDIAN);
switch (encaps_tunnel_subtype) {
case TUNNEL_SUBTLV_ENCAPSULATION:
if (encaps_tunnel_type == TUNNEL_TYPE_L2TP_OVER_IP) {
proto_tree_add_item(subtree6, hf_bgp_update_encaps_tunnel_subtlv_session_id, tvb, q + 2, 4, ENC_BIG_ENDIAN);
proto_tree_add_item(subtree6, hf_bgp_update_encaps_tunnel_subtlv_cookie, tvb, q + 6, encaps_tunnel_sublen - 4, ENC_NA);
} else if (encaps_tunnel_type == TUNNEL_TYPE_GRE) {
proto_tree_add_item(subtree6, hf_bgp_update_encaps_tunnel_subtlv_gre_key, tvb, q + 2, 4, ENC_BIG_ENDIAN);
}
break;
case TUNNEL_SUBTLV_PROTO_TYPE:
proto_tree_add_item(subtree6, hf_bgp_update_encaps_tunnel_subtlv_gre_key, tvb, q + 2, 2, ENC_BIG_ENDIAN);
break;
case TUNNEL_SUBTLV_COLOR:
proto_tree_add_item(subtree6, hf_bgp_update_encaps_tunnel_subtlv_color_value, tvb, q + 6, 4, ENC_BIG_ENDIAN);
break;
case TUNNEL_SUBTLV_LOAD_BALANCE:
if (encaps_tunnel_type == TUNNEL_TYPE_L2TP_OVER_IP || encaps_tunnel_type == TUNNEL_TYPE_GRE) {
proto_tree_add_item(subtree6, hf_bgp_update_encaps_tunnel_subtlv_lb_block_length, tvb, q + 2, 4, ENC_BIG_ENDIAN);
}
break;
default:
break;
} /* switch (encaps_tunnel_subtype) */
q += 2 + encaps_tunnel_sublen; /* type and length + length of value */
}
}
break;
case BGPTYPE_AIGP:
q = o + i + aoff;
ti = proto_tree_add_item(subtree2, hf_bgp_update_path_attribute_aigp, tvb, q, tlen, ENC_NA);
subtree3 = proto_item_add_subtree(ti, ett_bgp_aigp_attr);
aigp_type_item = proto_tree_add_item(subtree3, hf_bgp_aigp_type, tvb, q, 1, ENC_BIG_ENDIAN);
aigp_type = tvb_get_guint8(tvb,q);
switch (aigp_type) {
case AIGP_TLV_TYPE :
proto_tree_add_item(subtree3, hf_bgp_aigp_tlv_length, tvb, q+1, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(subtree3, hf_bgp_aigp_accu_igp_metric, tvb, q+3, 8, ENC_BIG_ENDIAN);
proto_item_append_text(ti, ": %" G_GINT64_MODIFIER "u", tvb_get_ntoh64(tvb, q+3));
proto_item_append_text(ti_pa, ": %" G_GINT64_MODIFIER "u", tvb_get_ntoh64(tvb, q+3));
break;
default :
expert_add_info_format(pinfo, aigp_type_item, &ei_bgp_attr_aigp_type,
"AIGP type %u unknown", aigp_type);
}
break;
case BGPTYPE_LINK_STATE_ATTR:
q = o + i + aoff;
end = o + i + aoff + tlen;
ti = proto_tree_add_item(subtree2, hf_bgp_update_path_attribute_link_state, tvb, q, tlen, ENC_NA);
subtree3 = proto_item_add_subtree(ti, ett_bgp_link_state);
while (q < end) {
advance = decode_link_state_attribute_tlv(subtree3, tvb, q, pinfo);
if (advance < 0)
break;
q += advance;
}
break;
case BGPTYPE_PMSI_TUNNEL_ATTR:
dissect_bgp_update_pmsi_attr(pinfo, subtree2, tvb, tlen, o+i+aoff);
break;
case BGPTYPE_ATTR_SET:
if (alen >= 4) {
proto_tree_add_item(subtree2, hf_bgp_update_path_attribute_attrset_origin_as, tvb,
o + i + aoff, 4, ENC_BIG_ENDIAN);
if (alen > 4) {
ti = proto_tree_add_item(subtree2, hf_bgp_update_path_attributes, tvb, o+i+aoff+4, alen-4, ENC_NA);
attr_set_subtree = proto_item_add_subtree(ti, ett_bgp_attrs);
dissect_bgp_path_attr(attr_set_subtree, tvb, alen-4, o+i+aoff+4, pinfo);
}
} else {
proto_tree_add_expert_format(subtree2, pinfo, &ei_bgp_length_invalid, tvb, o + i + aoff, alen,
"Attribute set (invalid): %u bytes%s",
alen, plurality(alen, "", "s"));
}
break;
default:
proto_tree_add_item(subtree2, hf_bgp_update_path_attributes_unknown, tvb, o + i + aoff, tlen, ENC_NA);
break;
} /* switch (bgpa.bgpa_type) */ /* end of second switch */
i += alen + aoff;
}
}
/*
* Dissect a BGP UPDATE message.
*/
static void
dissect_bgp_update(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo)
{
guint16 hlen; /* message length */
gint o; /* packet offset */
gint end=0; /* message end */
guint16 len; /* tmp */
proto_item *ti; /* tree item */
proto_tree *subtree; /* subtree for attributes */
int i; /* tmp */
hlen = tvb_get_ntohs(tvb, BGP_MARKER_SIZE);
o = BGP_HEADER_SIZE;
/* check for withdrawals */
len = tvb_get_ntohs(tvb, o);
proto_tree_add_item(tree, hf_bgp_update_withdrawn_routes_length, tvb, o, 2, ENC_BIG_ENDIAN);
o += 2;
/* parse unfeasible prefixes */
if (len > 0) {
ti = proto_tree_add_item(tree, hf_bgp_update_withdrawn_routes, tvb, o, len, ENC_NA);
subtree = proto_item_add_subtree(ti, ett_bgp_unfeas);
/* parse each prefix */
end = o + len;
/* Heuristic to detect if IPv4 prefix are using Path Identifiers */
if( detect_add_path_prefix4(tvb, o, end) ) {
/* IPv4 prefixes with Path Id */
while (o < end) {
i = decode_path_prefix4(subtree, pinfo, hf_bgp_nlri_path_id, hf_bgp_withdrawn_prefix, tvb, o,
"Withdrawn route");
if (i < 0)
return;
o += i;
}
} else {
while (o < end) {
i = decode_prefix4(subtree, pinfo, NULL, hf_bgp_withdrawn_prefix, tvb, o, len,
"Withdrawn route");
if (i < 0)
return;
o += i;
}
}
}
/* check for advertisements */
len = tvb_get_ntohs(tvb, o);
proto_tree_add_item(tree, hf_bgp_update_total_path_attribute_length, tvb, o, 2, ENC_BIG_ENDIAN);
/* path attributes */
if (len > 0) {
ti = proto_tree_add_item(tree, hf_bgp_update_path_attributes, tvb, o+2, len, ENC_NA);
subtree = proto_item_add_subtree(ti, ett_bgp_attrs);
dissect_bgp_path_attr(subtree, tvb, len-4, o+2, pinfo);
o += 2 + len;
/* NLRI */
len = hlen - o;
/* parse prefixes */
if (len > 0) {
ti = proto_tree_add_item(tree, hf_bgp_update_nlri, tvb, o, len, ENC_NA);
subtree = proto_item_add_subtree(ti, ett_bgp_nlri);
end = o + len;
/* Heuristic to detect if IPv4 prefix are using Path Identifiers */
if( detect_add_path_prefix4(tvb, o, end) ) {
/* IPv4 prefixes with Path Id */
while (o < end) {
i = decode_path_prefix4(subtree, pinfo, hf_bgp_nlri_path_id, hf_bgp_nlri_prefix, tvb, o,
"NLRI");
if (i < 0)
return;
o += i;
}
} else {
/* Standard prefixes */
while (o < end) {
i = decode_prefix4(subtree, pinfo, NULL, hf_bgp_nlri_prefix, tvb, o, 0,
"NLRI");
if (i < 0)
return;
o += i;
}
}
}
}
}
/*
* Dissect a BGP NOTIFICATION message.
*/
static void
dissect_bgp_notification(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo)
{
int hlen; /* message length */
int offset;
guint major_error;
proto_item *ti;
hlen = tvb_get_ntohs(tvb, BGP_MARKER_SIZE);
offset = BGP_MARKER_SIZE + 2 + 1;
/* print error code */
proto_tree_add_item(tree, hf_bgp_notify_major_error, tvb, offset, 1, ENC_BIG_ENDIAN);
major_error = tvb_get_guint8(tvb, offset);
offset += 1;
switch(major_error){
case BGP_MAJOR_ERROR_MSG_HDR:
proto_tree_add_item(tree, hf_bgp_notify_minor_msg_hdr, tvb, offset, 1, ENC_BIG_ENDIAN);
break;
case BGP_MAJOR_ERROR_OPEN_MSG:
proto_tree_add_item(tree, hf_bgp_notify_minor_open_msg, tvb, offset, 1, ENC_BIG_ENDIAN);
break;
case BGP_MAJOR_ERROR_UPDATE_MSG:
proto_tree_add_item(tree,hf_bgp_notify_minor_update_msg, tvb, offset, 1, ENC_BIG_ENDIAN);
break;
case BGP_MAJOR_ERROR_HT_EXPIRED:
proto_tree_add_item(tree, hf_bgp_notify_minor_ht_expired, tvb, offset, 1, ENC_BIG_ENDIAN);
break;
case BGP_MAJOR_ERROR_STATE_MACHINE:
proto_tree_add_item(tree, hf_bgp_notify_minor_state_machine, tvb, offset, 1, ENC_BIG_ENDIAN);
break;
case BGP_MAJOR_ERROR_CEASE:
proto_tree_add_item(tree, hf_bgp_notify_minor_cease, tvb, offset, 1, ENC_BIG_ENDIAN);
break;
case BGP_MAJOR_ERROR_CAP_MSG:
proto_tree_add_item(tree, hf_bgp_notify_minor_cap_msg, tvb, offset, 1, ENC_BIG_ENDIAN);
break;
default:
ti = proto_tree_add_item(tree, hf_bgp_notify_minor_unknown, tvb, offset, 1, ENC_BIG_ENDIAN);
expert_add_info_format(pinfo, ti, &ei_bgp_notify_minor_unknown, "Unknown notification error (%d)",major_error);
break;
}
offset += 1;
/* only print if there is optional data */
if (hlen > BGP_MIN_NOTIFICATION_MSG_SIZE) {
proto_tree_add_item(tree, hf_bgp_notify_data, tvb, offset, hlen - BGP_MIN_NOTIFICATION_MSG_SIZE, ENC_NA);
}
}
/*
* Dissect a BGP ROUTE-REFRESH message.
*/
static void
dissect_bgp_route_refresh(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo)
{
int p; /* tvb offset counter */
int pend; /* end of list of entries for one orf type */
guint16 hlen; /* tvb RR msg length */
proto_item *ti; /* tree item */
proto_item *ti1; /* tree item */
proto_tree *subtree; /* tree for orf */
proto_tree *subtree1; /* tree for orf entry */
guint8 orftype; /* ORF Type */
guint16 orflen; /* ORF len */
guint8 entryflag; /* ORF Entry flag: action(add,del,delall) match(permit,deny) */
int entrylen; /* ORF Entry length */
int advance; /* tmp */
/*
example 1
00 1c 05 hlen=28
00 01 00 01 afi,safi= ipv4-unicast
02 80 00 01 defer, prefix-orf, len=1
80 removeall
example 2
00 25 05 hlen=37
00 01 00 01 afi,saif= ipv4-unicast
01 80 00 0a immediate, prefix-orf, len=10
00 add
00 00 00 05 seqno = 5
12 ge = 18
18 le = 24
10 07 02 prefix = 7.2.0.0/16
*/
if (!tree)
return;
hlen = tvb_get_ntohs(tvb, BGP_MARKER_SIZE);
p = BGP_HEADER_SIZE;
/* AFI */
proto_tree_add_item(tree, hf_bgp_route_refresh_afi, tvb, p, 2, ENC_BIG_ENDIAN);
p += 2;
/* Subtype in draft-ietf-idr-bgp-enhanced-route-refresh-02 (for Enhanced Route Refresh Capability) before Reserved*/
proto_tree_add_item(tree, hf_bgp_route_refresh_subtype, tvb, p, 1, ENC_BIG_ENDIAN);
p++;
/* SAFI */
proto_tree_add_item(tree, hf_bgp_route_refresh_safi, tvb, p, 1, ENC_BIG_ENDIAN);
p++;
if ( hlen == BGP_HEADER_SIZE + 4 )
return;
while (p < hlen) {
/* ORF type */
ti = proto_tree_add_item(tree, hf_bgp_route_refresh_orf, tvb, p, 4, ENC_NA);
subtree = proto_item_add_subtree(ti, ett_bgp_orf);
proto_tree_add_item(subtree, hf_bgp_route_refresh_orf_flag, tvb, p, 1, ENC_BIG_ENDIAN);
p += 1;
ti1 = proto_tree_add_item(subtree, hf_bgp_route_refresh_orf_type, tvb, p , 1, ENC_BIG_ENDIAN);
orftype = tvb_get_guint8(tvb, p);
p += 1;
proto_tree_add_item(subtree, hf_bgp_route_refresh_orf_length, tvb, p , 2, ENC_BIG_ENDIAN);
orflen = tvb_get_ntohs(tvb, p);
proto_item_set_len(ti, orflen + 4);
p += 2;
if (orftype != BGP_ORF_PREFIX_CISCO) {
expert_add_info_format(pinfo, ti1, &ei_bgp_route_refresh_orf_type_unknown, "ORFEntry-Unknown (type %u)", orftype);
p += orflen;
continue;
}
pend = p + orflen;
while (p < pend) {
ti1 = proto_tree_add_item(subtree, hf_bgp_route_refresh_orf_entry_prefixlist, tvb, p, 1, ENC_NA);
subtree1 = proto_item_add_subtree(ti1, ett_bgp_orf_entry);
proto_tree_add_item(subtree1, hf_bgp_route_refresh_orf_entry_action, tvb, p, 1, ENC_BIG_ENDIAN);
entryflag = tvb_get_guint8(tvb, p);
if (((entryflag & BGP_ORF_ACTION) >> 6) == BGP_ORF_REMOVEALL) {
p++;
continue;
}
proto_tree_add_item(subtree1, hf_bgp_route_refresh_orf_entry_match, tvb, p, 1, ENC_BIG_ENDIAN);
p++;
proto_tree_add_item(subtree1, hf_bgp_route_refresh_orf_entry_sequence, tvb, p, 4, ENC_BIG_ENDIAN);
p +=4;
proto_tree_add_item(subtree1, hf_bgp_route_refresh_orf_entry_prefixmask_lower, tvb, p, 1, ENC_BIG_ENDIAN);
p++;
proto_tree_add_item(subtree1, hf_bgp_route_refresh_orf_entry_prefixmask_upper, tvb, p, 1, ENC_BIG_ENDIAN);
p++;
advance = decode_prefix4(subtree1, pinfo, NULL, hf_bgp_route_refresh_orf_entry_ip, tvb, p, 0, "ORF");
if (advance < 0)
break;
entrylen = 7 + 1 + advance;
proto_item_set_len(ti1, entrylen);
p += advance;
}
}
}
/*
* Dissect a BGP CAPABILITY message.
*/
static void
dissect_bgp_capability(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo)
{
int offset = 0;
int mend;
mend = offset + tvb_get_ntohs(tvb, offset + BGP_MARKER_SIZE);
offset += BGP_HEADER_SIZE;
/* step through all of the capabilities */
while (offset < mend) {
offset = dissect_bgp_capability_item(tvb, tree, pinfo, offset, TRUE);
}
}
static void
dissect_bgp_pdu(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree,
gboolean first)
{
guint16 bgp_len; /* Message length */
guint8 bgp_type; /* Message type */
const char *typ; /* Message type (string) */
proto_item *ti_len = NULL; /* length item */
proto_tree *bgp_tree = NULL; /* BGP packet tree */
bgp_len = tvb_get_ntohs(tvb, BGP_MARKER_SIZE);
bgp_type = tvb_get_guint8(tvb, BGP_MARKER_SIZE + 2);
typ = val_to_str(bgp_type, bgptypevals, "Unknown message type (0x%02x)");
if (first)
col_add_str(pinfo->cinfo, COL_INFO, typ);
else
col_append_fstr(pinfo->cinfo, COL_INFO, ", %s", typ);
if (tree) {
proto_item *ti;
ti = proto_tree_add_item(tree, proto_bgp, tvb, 0, -1, ENC_NA);
proto_item_append_text(ti, " - %s", typ);
/* add a different tree for each message type */
switch (bgp_type) {
case BGP_OPEN:
bgp_tree = proto_item_add_subtree(ti, ett_bgp_open);
break;
case BGP_UPDATE:
bgp_tree = proto_item_add_subtree(ti, ett_bgp_update);
break;
case BGP_NOTIFICATION:
bgp_tree = proto_item_add_subtree(ti, ett_bgp_notification);
break;
case BGP_KEEPALIVE:
bgp_tree = proto_item_add_subtree(ti, ett_bgp);
break;
case BGP_ROUTE_REFRESH_CISCO:
case BGP_ROUTE_REFRESH:
bgp_tree = proto_item_add_subtree(ti, ett_bgp_route_refresh);
break;
case BGP_CAPABILITY:
bgp_tree = proto_item_add_subtree(ti, ett_bgp_capability);
break;
default:
bgp_tree = proto_item_add_subtree(ti, ett_bgp);
break;
}
proto_tree_add_item(bgp_tree, hf_bgp_marker, tvb, 0, 16, ENC_NA);
ti_len = proto_tree_add_item(bgp_tree, hf_bgp_length, tvb, 16, 2, ENC_BIG_ENDIAN);
}
if (bgp_len < BGP_HEADER_SIZE || bgp_len > BGP_MAX_PACKET_SIZE) {
expert_add_info_format(pinfo, ti_len, &ei_bgp_length_invalid, "Length is invalid %u", bgp_len);
return;
}
proto_tree_add_item(bgp_tree, hf_bgp_type, tvb, 16 + 2, 1, ENC_BIG_ENDIAN);
switch (bgp_type) {
case BGP_OPEN:
dissect_bgp_open(tvb, bgp_tree, pinfo);
break;
case BGP_UPDATE:
dissect_bgp_update(tvb, bgp_tree, pinfo);
break;
case BGP_NOTIFICATION:
dissect_bgp_notification(tvb, bgp_tree, pinfo);
break;
case BGP_KEEPALIVE:
/* no data in KEEPALIVE messages */
break;
case BGP_ROUTE_REFRESH_CISCO:
case BGP_ROUTE_REFRESH:
dissect_bgp_route_refresh(tvb, bgp_tree, pinfo);
break;
case BGP_CAPABILITY:
dissect_bgp_capability(tvb, bgp_tree, pinfo);
break;
default:
break;
}
}
/*
* Dissect a BGP packet.
*/
static int
dissect_bgp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
{
volatile int offset = 0; /* offset into the tvbuff */
gint reported_length_remaining;
guint8 bgp_marker[BGP_MARKER_SIZE]; /* Marker (should be all ones */
static guchar marker[] = { /* BGP message marker */
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
};
proto_item *ti; /* tree item */
proto_tree *bgp_tree; /* BGP packet tree */
guint16 bgp_len; /* Message length */
int offset_before;
guint length_remaining;
guint length;
volatile gboolean first = TRUE; /* TRUE for the first BGP message in packet */
tvbuff_t *volatile next_tvb;
col_set_str(pinfo->cinfo, COL_PROTOCOL, "BGP");
col_clear(pinfo->cinfo, COL_INFO);
/*
* Scan through the TCP payload looking for a BGP marker.
*/
while ((reported_length_remaining = tvb_reported_length_remaining(tvb, offset))
> 0) {
/*
* "reported_length_remaining" is the number of bytes of TCP payload
* remaining. If it's more than the length of a BGP marker,
* we check only the number of bytes in a BGP marker.
*/
if (reported_length_remaining > BGP_MARKER_SIZE)
reported_length_remaining = BGP_MARKER_SIZE;
/*
* OK, is there a BGP marker starting at the specified offset -
* or, at least, the beginning of a BGP marker running to the end
* of the TCP payload?
*
* This will throw an exception if the frame is short; that's what
* we want.
*/
tvb_memcpy(tvb, bgp_marker, offset, reported_length_remaining);
if (memcmp(bgp_marker, marker, reported_length_remaining) == 0) {
/*
* Yes - stop scanning and start processing BGP packets.
*/
break;
}
/*
* No - keep scanning through the tvbuff to try to find a marker.
*/
offset++;
}
/*
* If we skipped any bytes, mark it as a BGP continuation.
*/
if (offset > 0) {
ti = proto_tree_add_item(tree, proto_bgp, tvb, 0, -1, ENC_NA);
bgp_tree = proto_item_add_subtree(ti, ett_bgp);
proto_tree_add_item(bgp_tree, hf_bgp_continuation, tvb, 0, offset, ENC_NA);
}
/*
* Now process the BGP packets in the TCP payload.
*
* XXX - perhaps "tcp_dissect_pdus()" should take a starting
* offset, in which case we can replace the loop below with
* a call to "tcp_dissect_pdus()".
*/
while (tvb_reported_length_remaining(tvb, offset) > 0) {
/*
* This will throw an exception if we don't have any data left.
* That's what we want. (See "tcp_dissect_pdus()", which is
* similar.)
*/
length_remaining = tvb_ensure_captured_length_remaining(tvb, offset);
/*
* Can we do reassembly?
*/
if (bgp_desegment && pinfo->can_desegment) {
/*
* Yes - would a BGP header starting at this offset be split
* across segment boundaries?
*/
if (length_remaining < BGP_HEADER_SIZE) {
/*
* Yes. Tell the TCP dissector where the data for this message
* starts in the data it handed us and that we need "some more
* data." Don't tell it exactly how many bytes we need because
* if/when we ask for even more (after the header) that will
* break reassembly.
*/
pinfo->desegment_offset = offset;
pinfo->desegment_len = DESEGMENT_ONE_MORE_SEGMENT;
return tvb_captured_length(tvb);
}
}
/*
* Get the length and type from the BGP header.
*/
bgp_len = tvb_get_ntohs(tvb, offset + BGP_MARKER_SIZE);
if (bgp_len < BGP_HEADER_SIZE) {
/*
* The BGP length doesn't include the BGP header; report that
* as an error.
*/
show_reported_bounds_error(tvb, pinfo, tree);
return tvb_captured_length(tvb);
}
/*
* Can we do reassembly?
*/
if (bgp_desegment && pinfo->can_desegment) {
/*
* Yes - is the PDU split across segment boundaries?
*/
if (length_remaining < bgp_len) {
/*
* Yes. Tell the TCP dissector where the data for this
* message starts in the data it handed us, and how many
* more bytes we need, and return.
*/
pinfo->desegment_offset = offset;
pinfo->desegment_len = bgp_len - length_remaining;
return tvb_captured_length(tvb);
}
}
/*
* Construct a tvbuff containing the amount of the payload we have
* available. Make its reported length the amount of data in the PDU.
*
* XXX - if reassembly isn't enabled. the subdissector will throw a
* BoundsError exception, rather than a ReportedBoundsError exception.
* We really want a tvbuff where the length is "length", the reported
* length is "plen", and the "if the snapshot length were infinite"
* length is the minimum of the reported length of the tvbuff handed
* to us and "plen", with a new type of exception thrown if the offset
* is within the reported length but beyond that third length, with
* that exception getting the "Unreassembled Packet" error.
*/
length = length_remaining;
if (length > bgp_len)
length = bgp_len;
next_tvb = tvb_new_subset(tvb, offset, length, bgp_len);
/*
* Dissect the PDU.
*
* If it gets an error that means there's no point in
* dissecting any more PDUs, rethrow the exception in
* question.
*
* If it gets any other error, report it and continue, as that
* means that PDU got an error, but that doesn't mean we should
* stop dissecting PDUs within this frame or chunk of reassembled
* data.
*/
TRY {
dissect_bgp_pdu(next_tvb, pinfo, tree, first);
}
CATCH_NONFATAL_ERRORS {
show_exception(tvb, pinfo, tree, EXCEPT_CODE, GET_MESSAGE);
}
ENDTRY;
first = FALSE;
/*
* Step to the next PDU.
* Make sure we don't overflow.
*/
offset_before = offset;
offset += bgp_len;
if (offset <= offset_before)
break;
}
return tvb_captured_length(tvb);
}
/*
* Register ourselves.
*/
void
proto_register_bgp(void)
{
static hf_register_info hf[] = {
/* BGP Header */
{ &hf_bgp_marker,
{ "Marker", "bgp.marker", FT_BYTES, BASE_NONE,
NULL, 0x0, "Must be set to all ones (16 Bytes)", HFILL }},
{ &hf_bgp_length,
{ "Length", "bgp.length", FT_UINT16, BASE_DEC,
NULL, 0x0, "The total length of the message, including the header in octets", HFILL }},
{ &hf_bgp_prefix_length,
{ "Prefix Length", "bgp.prefix_length", FT_UINT8, BASE_DEC,
NULL, 0x0, NULL, HFILL }},
{ &hf_bgp_rd,
{ "Route Distinguisher", "bgp.rd", FT_STRING, BASE_NONE,
NULL, 0x0, NULL, HFILL }},
{ &hf_bgp_continuation,
{ "Continuation", "bgp.continuation", FT_NONE, BASE_NONE,
NULL, 0x0, NULL, HFILL }},
{ &hf_bgp_originating_as,
{ "Originating AS", "bgp.originating_as", FT_UINT32, BASE_DEC,
NULL, 0x0, NULL, HFILL }},
{ &hf_bgp_community_prefix,
{ "Community Prefix", "bgp.community_prefix", FT_STRING, BASE_NONE,
NULL, 0x0, NULL, HFILL }},
{ &hf_bgp_endpoint_address,
{ "Endpoint Address", "bgp.endpoint_address", FT_IPv4, BASE_NONE,
NULL, 0x0, NULL, HFILL }},
{ &hf_bgp_endpoint_address_ipv6,
{ "Endpoint Address", "bgp.endpoint_address_ipv6", FT_IPv6, BASE_NONE,
NULL, 0x0, NULL, HFILL }},
{ &hf_bgp_label_stack,
{ "Label Stack", "bgp.label_stack", FT_STRING, BASE_NONE,
NULL, 0x0, NULL, HFILL }},
{ &hf_bgp_vplsad_length,
{ "Length", "bgp.vplsad.length", FT_UINT16, BASE_DEC,
NULL, 0x0, NULL, HFILL }},
{ &hf_bgp_vplsad_rd,
{ "RD", "bgp.vplsad.rd", FT_STRING, BASE_NONE,
NULL, 0x0, NULL, HFILL }},
{ &hf_bgp_bgpad_pe_addr,
{ "PE Addr", "bgp.ad.pe_addr", FT_IPv4, BASE_NONE,
NULL, 0x0, NULL, HFILL }},
{ &hf_bgp_vplsbgp_ce_id,
{ "CE-ID", "bgp.vplsbgp.ce_id", FT_UINT16, BASE_DEC,
NULL, 0x0, NULL, HFILL }},
{ &hf_bgp_vplsbgp_labelblock_offset,
{ "Label Block Offset", "bgp.vplsbgp.labelblock.offset", FT_UINT16, BASE_DEC,
NULL, 0x0, NULL, HFILL }},
{ &hf_bgp_vplsbgp_labelblock_size,
{ "Label Block Size", "bgp.vplsbgp.labelblock.size", FT_UINT16, BASE_DEC,
NULL, 0x0, NULL, HFILL }},
{ &hf_bgp_vplsbgp_labelblock_base,
{ "Label Block Base", "bgp.vplsbgp.labelblock.base", FT_STRING, BASE_NONE,
NULL, 0x0, NULL, HFILL }},
{ &hf_bgp_wildcard_route_target,
{ "Wildcard route target", "bgp.wildcard_route_target", FT_STRING, BASE_NONE,
NULL, 0x0, NULL, HFILL }},
{ &hf_bgp_type,
{ "Type", "bgp.type", FT_UINT8, BASE_DEC,
VALS(bgptypevals), 0x0, "BGP message type", HFILL }},
/* Open Message */
{ &hf_bgp_open_version,
{ "Version", "bgp.open.version", FT_UINT8, BASE_DEC,
NULL, 0x0, "The protocol version number", HFILL }},
{ &hf_bgp_open_myas,
{ "My AS", "bgp.open.myas", FT_UINT16, BASE_DEC,
NULL, 0x0, "The Autonomous System number of the sender", HFILL }},
{ &hf_bgp_open_holdtime,
{ "Hold Time", "bgp.open.holdtime", FT_UINT16, BASE_DEC,
NULL, 0x0, "The number of seconds the sender proposes for Hold Time", HFILL }},
{ &hf_bgp_open_identifier,
{ "BGP Identifier", "bgp.open.identifier", FT_IPv4, BASE_NONE,
NULL, 0x0, "The BGP Identifier of the sender", HFILL }},
{ &hf_bgp_open_opt_len,
{ "Optional Parameters Length", "bgp.open.opt.len", FT_UINT8, BASE_DEC,
NULL, 0x0, "The total length of the Optional Parameters field in octets", HFILL }},
{ &hf_bgp_open_opt_params,
{ "Optional Parameters", "bgp.open.opt", FT_NONE, BASE_NONE,
NULL, 0x0, "List of optional parameters", HFILL }},
{ &hf_bgp_open_opt_param,
{ "Optional Parameter", "bgp.open.opt.param", FT_NONE, BASE_NONE,
NULL, 0x0, NULL, HFILL }},
{ &hf_bgp_open_opt_param_type,
{ "Parameter Type", "bgp.open.opt.param.type", FT_UINT8, BASE_DEC,
VALS(bgp_open_opt_vals), 0x0, "Unambiguously identifies individual parameters", HFILL }},
{ &hf_bgp_open_opt_param_len,
{ "Parameter Length", "bgp.open.opt.param.len", FT_UINT8, BASE_DEC,
NULL, 0x0, "Length of the Parameter Value", HFILL }},
{ &hf_bgp_open_opt_param_auth,
{ "Authentication Data", "bgp.open.opt.param.auth", FT_BYTES, BASE_NONE,
NULL, 0x0, "Deprecated", HFILL }},
{ &hf_bgp_open_opt_param_unknown,
{ "Unknown", "bgp.open.opt.param.unknown", FT_BYTES, BASE_NONE,
NULL, 0x0, "Unknown Parameter", HFILL }},
/* Notification error */
{ &hf_bgp_notify_major_error,
{ "Major error Code", "bgp.notify.major_error", FT_UINT8, BASE_DEC,
VALS(bgpnotify_major), 0x0, NULL, HFILL }},
{ &hf_bgp_notify_minor_msg_hdr,
{ "Minor error Code (Message Header)", "bgp.notify.minor_error", FT_UINT8, BASE_DEC,
VALS(bgpnotify_minor_msg_hdr), 0x0, NULL, HFILL }},
{ &hf_bgp_notify_minor_open_msg,
{ "Minor error Code (Open Message)", "bgp.notify.minor_error_open", FT_UINT8, BASE_DEC,
VALS(bgpnotify_minor_open_msg), 0x0, NULL, HFILL }},
{ &hf_bgp_notify_minor_update_msg,
{ "Minor error Code (Update Message)", "bgp.notify.minor_error_update", FT_UINT8, BASE_DEC,
VALS(bgpnotify_minor_update_msg), 0x0, NULL, HFILL }},
{ &hf_bgp_notify_minor_ht_expired,
{ "Minor error Code (Hold Timer Expired)", "bgp.notify.minor_error_expired", FT_UINT8, BASE_DEC,
NULL, 0x0, NULL, HFILL }},
{ &hf_bgp_notify_minor_state_machine,
{ "Minor error Code (State Machine)", "bgp.notify.minor_error_state", FT_UINT8, BASE_DEC,
VALS(bgpnotify_minor_state_machine), 0x0, NULL, HFILL }},
{ &hf_bgp_notify_minor_cease,
{ "Minor error Code (Cease)", "bgp.notify.minor_error_cease", FT_UINT8, BASE_DEC,
VALS(bgpnotify_minor_cease), 0x0, NULL, HFILL }},
{ &hf_bgp_notify_minor_cap_msg,
{ "Minor error Code (Capability Message)", "bgp.notify.minor_error_capability", FT_UINT8, BASE_DEC,
VALS(bgpnotify_minor_cap_msg), 0x0, NULL, HFILL }},
{ &hf_bgp_notify_minor_unknown,
{ "Minor error Code (Unknown)", "bgp.notify.minor_error_unknown", FT_UINT8, BASE_DEC,
NULL, 0x0, NULL, HFILL }},
{ &hf_bgp_notify_data,
{ "Data", "bgp.notify.minor_data", FT_BYTES, BASE_NONE,
NULL, 0x0, NULL, HFILL }},
/* Route Refresh */
{ &hf_bgp_route_refresh_afi,
{ "Address family identifier (AFI)", "bgp.route_refresh.afi", FT_UINT16, BASE_DEC,
VALS(afn_vals), 0x0, NULL, HFILL }},
{ &hf_bgp_route_refresh_subtype,
{ "Subtype", "bgp.route_refresh.subtype", FT_UINT8, BASE_DEC,
VALS(route_refresh_subtype_vals), 0x0, NULL, HFILL }},
{ &hf_bgp_route_refresh_safi,
{ "Subsequent address family identifier (SAFI)", "bgp.route_refresh.safi", FT_UINT8, BASE_DEC,
VALS(bgpattr_nlri_safi), 0x0, NULL, HFILL }},
{ &hf_bgp_route_refresh_orf,
{ "ORF information", "bgp.route_refresh.orf", FT_NONE, BASE_NONE,
NULL, 0x0, NULL, HFILL }},
{ &hf_bgp_route_refresh_orf_flag,
{ "ORF flag", "bgp.route_refresh.orf.flag", FT_UINT8, BASE_DEC,
VALS(orf_when_vals), 0x0, NULL, HFILL }},
{ &hf_bgp_route_refresh_orf_type,
{ "ORF type", "bgp.route_refresh.orf.type", FT_UINT8, BASE_DEC,
VALS(orf_type_vals), 0x0, NULL, HFILL }},
{ &hf_bgp_route_refresh_orf_length,
{ "ORF length", "bgp.route_refresh.orf.length", FT_UINT8, BASE_DEC,
NULL, 0x0, NULL, HFILL }},
{ &hf_bgp_route_refresh_orf_entry_prefixlist,
{ "ORFEntry PrefixList", "bgp.route_refresh.orf.entry", FT_NONE, BASE_NONE,
NULL, 0x0, NULL, HFILL }},
{ &hf_bgp_route_refresh_orf_entry_action,
{ "ORFEntry Action", "bgp.route_refresh.orf.entry.action", FT_UINT8, BASE_DEC,
VALS(orf_entry_action_vals), BGP_ORF_ACTION, NULL, HFILL }},
{ &hf_bgp_route_refresh_orf_entry_match,
{ "ORFEntry Match", "bgp.route_refresh.orf.entry.match", FT_UINT8, BASE_DEC,
VALS(orf_entry_match_vals), BGP_ORF_MATCH, NULL, HFILL }},
{ &hf_bgp_route_refresh_orf_entry_sequence,
{ "ORFEntry Sequence", "bgp.route_refresh.orf.entry.sequence", FT_UINT8, BASE_DEC,
NULL, 0x0, NULL, HFILL }},
{ &hf_bgp_route_refresh_orf_entry_prefixmask_lower,
{ "ORFEntry PrefixMask length lower bound", "bgp.route_refresh.orf.entry.prefixmask_lower", FT_UINT8, BASE_DEC,
NULL, 0x0, NULL, HFILL }},
{ &hf_bgp_route_refresh_orf_entry_prefixmask_upper,
{ "ORFEntry PrefixMask length upper bound", "bgp.route_refresh.orf.entry.prefixmask_upper", FT_UINT8, BASE_DEC,
NULL, 0x0, NULL, HFILL }},
{ &hf_bgp_route_refresh_orf_entry_ip,
{ "ORFEntry IP address", "bgp.route_refresh.orf.entry.ip", FT_IPv4, BASE_NONE,
NULL, 0x0, NULL, HFILL }},
/* Capability */
{ &hf_bgp_cap,
{ "Capability", "bgp.cap", FT_NONE, BASE_NONE,
NULL, 0x0, NULL, HFILL }},
{ &hf_bgp_cap_type,
{ "Type", "bgp.cap.type", FT_UINT8, BASE_DEC,
VALS(capability_vals), 0x0, NULL, HFILL }},
{ &hf_bgp_cap_length,
{ "Length", "bgp.cap.length", FT_UINT8, BASE_DEC,
NULL, 0x0, NULL, HFILL }},
{ &hf_bgp_cap_action,
{ "Action", "bgp.cap.action", FT_UINT8, BASE_DEC,
VALS(bgpcap_action), 0x0, NULL, HFILL }},
{ &hf_bgp_cap_unknown,
{ "Unknown", "bgp.cap.unknown", FT_BYTES, BASE_NONE,
NULL, 0x0, NULL, HFILL }},
{ &hf_bgp_cap_reserved,
{ "Reserved", "bgp.cap.reserved", FT_BYTES, BASE_NONE,
NULL, 0x0, "Must be Zero", HFILL }},
{ &hf_bgp_cap_mp_afi,
{ "AFI", "bgp.cap.mp.afi", FT_UINT16, BASE_DEC,
VALS(afn_vals), 0x0, NULL, HFILL }},
{ &hf_bgp_cap_mp_safi,
{ "SAFI", "bgp.cap.mp.safi", FT_UINT8, BASE_DEC,
VALS(bgpattr_nlri_safi), 0x0, NULL, HFILL }},
{ &hf_bgp_cap_gr_timers,
{ "Restart Timers", "bgp.cap.gr.timers", FT_UINT16, BASE_HEX,
NULL, 0x0, NULL, HFILL }},
{ &hf_bgp_cap_gr_timers_restart_flag,
{ "Restart", "bgp.cap.gr.timers.restart_flag", FT_BOOLEAN, 16,
TFS(&tfs_yes_no), 0x8000, NULL, HFILL }},
{ &hf_bgp_cap_gr_timers_restart_time,
{ "Time", "bgp.cap.gr.timers.restart_time", FT_UINT16, BASE_DEC,
NULL, 0x0FFF, "in us", HFILL }},
{ &hf_bgp_cap_gr_afi,
{ "AFI", "bgp.cap.gr.afi", FT_UINT16, BASE_DEC,
VALS(afn_vals), 0x0, NULL, HFILL }},
{ &hf_bgp_cap_gr_safi,
{ "SAFI", "bgp.cap.gr.safi", FT_UINT8, BASE_DEC,
VALS(bgpattr_nlri_safi), 0x0, NULL, HFILL }},
{ &hf_bgp_cap_gr_flag,
{ "Flag", "bgp.cap.gr.flag", FT_UINT8, BASE_HEX,
NULL, 0x0, NULL, HFILL }},
{ &hf_bgp_cap_gr_flag_pfs,
{ "Preserve forwarding state", "bgp.cap.gr.flag.pfs", FT_BOOLEAN, 8,
TFS(&tfs_yes_no), 0x80, NULL, HFILL }},
{ &hf_bgp_cap_4as,
{ "AS Number", "bgp.cap.4as", FT_UINT32, BASE_DEC,
NULL, 0x0, NULL, HFILL }},
{ &hf_bgp_cap_dc,
{ "Capability Dynamic", "bgp.cap.dc", FT_UINT8, BASE_DEC,
VALS(capability_vals), 0x0, NULL, HFILL }},
{ &hf_bgp_cap_ap_afi,
{ "AFI", "bgp.cap.ap.afi", FT_UINT16, BASE_DEC,
VALS(afn_vals), 0x0, NULL, HFILL }},
{ &hf_bgp_cap_ap_safi,
{ "SAFI", "bgp.cap.ap.safi", FT_UINT8, BASE_DEC,
VALS(bgpattr_nlri_safi), 0x0, NULL, HFILL }},
{ &hf_bgp_cap_ap_sendreceive,
{ "Send/Receive", "bgp.cap.ap.sendreceive", FT_UINT8, BASE_DEC,
VALS(orf_send_recv_vals), 0x0, NULL, HFILL }},
{ &hf_bgp_cap_orf_afi,
{ "AFI", "bgp.cap.orf.afi", FT_UINT16, BASE_DEC,
VALS(afn_vals), 0x0, NULL, HFILL }},
{ &hf_bgp_cap_orf_safi,
{ "SAFI", "bgp.cap.orf.safi", FT_UINT8, BASE_DEC,
VALS(bgpattr_nlri_safi), 0x0, NULL, HFILL }},
{ &hf_bgp_cap_orf_number,
{ "Number", "bgp.cap.orf.number", FT_UINT8, BASE_DEC,
NULL, 0x0, NULL, HFILL }},
{ &hf_bgp_cap_orf_type,
{ "Type", "bgp.cap.orf.type", FT_UINT8, BASE_DEC,
VALS(orf_type_vals), 0x0, NULL, HFILL }},
{ &hf_bgp_cap_orf_sendreceive,
{ "Send Receive", "bgp.cap.orf.sendreceive", FT_UINT8, BASE_DEC,
VALS(orf_send_recv_vals), 0x0, NULL, HFILL }},
{ &hf_bgp_cap_fqdn_hostname_len,
{ "Hostname Length", "bgp.cap.orf.fqdn.hostname.len", FT_UINT8, BASE_DEC,
NULL, 0x0, NULL, HFILL }},
{ &hf_bgp_cap_fqdn_hostname,
{ "Hostname", "bgp.cap.orf.fqdn.hostname", FT_STRING, BASE_NONE,
NULL, 0x0, NULL, HFILL }},
{ &hf_bgp_cap_fqdn_domain_name_len,
{ "Domain Name Length", "bgp.cap.orf.fqdn.domain_name.len", FT_UINT8, BASE_DEC,
NULL, 0x0, NULL, HFILL }},
{ &hf_bgp_cap_fqdn_domain_name,
{ "Domain Name", "bgp.cap.orf.fqdn.domain_name", FT_STRING, BASE_NONE,
NULL, 0x0, NULL, HFILL }},
/* BGP update */
{ &hf_bgp_update_withdrawn_routes_length,
{ "Withdrawn Routes Length", "bgp.update.withdrawn_routes.length", FT_UINT16, BASE_DEC,
NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_update_withdrawn_routes,
{ "Withdrawn Routes", "bgp.update.withdrawn_routes", FT_NONE, BASE_NONE,
NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_update_path_attribute_aggregator_as,
{ "Aggregator AS", "bgp.update.path_attribute.aggregator_as", FT_UINT16, BASE_DEC,
NULL, 0x0, NULL, HFILL}},
/* BGP update path attributes */
{ &hf_bgp_update_path_attributes,
{ "Path attributes", "bgp.update.path_attributes", FT_NONE, BASE_NONE,
NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_update_path_attributes_unknown,
{ "Unknown Path attributes", "bgp.update.path_attributes.unknown", FT_NONE, BASE_NONE,
NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_update_total_path_attribute_length,
{ "Total Path Attribute Length", "bgp.update.path_attributes.length", FT_UINT16, BASE_DEC,
NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_update_path_attribute_aggregator_origin,
{ "Aggregator origin", "bgp.update.path_attribute.aggregator_origin", FT_IPv4, BASE_NONE,
NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_update_path_attribute_as_path_segment,
{ "AS Path segment", "bgp.update.path_attribute.as_path_segment", FT_NONE, BASE_NONE,
NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_update_path_attribute_as_path_segment_type,
{ "Segment type", "bgp.update.path_attribute.as_path_segment.type", FT_UINT8, BASE_DEC,
VALS(as_segment_type), 0x0, NULL, HFILL}},
{ &hf_bgp_update_path_attribute_as_path_segment_length,
{ "Segment length (number of ASN)", "bgp.update.path_attribute.as_path_segment.length", FT_UINT8, BASE_DEC,
NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_update_path_attribute_as_path_segment_as2,
{ "AS2", "bgp.update.path_attribute.as_path_segment.as2", FT_UINT16, BASE_DEC,
NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_update_path_attribute_as_path_segment_as4,
{ "AS4", "bgp.update.path_attribute.as_path_segment.as4", FT_UINT32, BASE_DEC,
NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_update_path_attribute_communities,
{ "Communities", "bgp.update.path_attribute.communities", FT_NONE, BASE_NONE,
NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_update_path_attribute_community,
{ "Community", "bgp.update.path_attribute.community", FT_NONE, BASE_NONE,
NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_update_path_attribute_community_well_known,
{ "Community Well-known", "bgp.update.path_attribute.community_wellknown", FT_UINT32, BASE_HEX,
VALS(community_vals), 0x0, "Reserved", HFILL}},
{ &hf_bgp_update_path_attribute_community_as,
{ "Community AS", "bgp.update.path_attribute.community_as", FT_UINT16, BASE_DEC,
NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_update_path_attribute_community_value,
{ "Community value", "bgp.update.path_attribute.community_value", FT_UINT16, BASE_DEC,
NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_update_path_attribute_local_pref,
{ "Local preference", "bgp.update.path_attribute.local_pref", FT_UINT32, BASE_DEC,
NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_update_path_attribute_attrset_origin_as,
{ "Origin AS", "bgp.update.path_attribute.attr_set.origin_as", FT_UINT32, BASE_DEC,
NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_update_path_attribute_multi_exit_disc,
{ "Multiple exit discriminator", "bgp.update.path_attribute.multi_exit_disc", FT_UINT32, BASE_DEC,
NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_update_path_attribute_next_hop,
{ "Next hop", "bgp.update.path_attribute.next_hop", FT_IPv4, BASE_NONE,
NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_update_path_attribute_origin,
{ "Origin", "bgp.update.path_attribute.origin", FT_UINT8, BASE_DEC,
VALS(bgpattr_origin), 0x0, NULL, HFILL}},
{ &hf_bgp_update_path_attribute,
{ "Path Attribute", "bgp.update.path_attribute", FT_NONE, BASE_NONE,
NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_update_path_attribute_flags,
{ "Flags", "bgp.update.path_attribute.flags", FT_UINT8, BASE_HEX,
NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_update_path_attribute_flags_optional,
{ "Optional", "bgp.update.path_attribute.flags.optional", FT_BOOLEAN, 8,
TFS(&tfs_optional_wellknown), BGP_ATTR_FLAG_OPTIONAL, NULL, HFILL}},
{ &hf_bgp_update_path_attribute_flags_transitive,
{ "Transitive", "bgp.update.path_attribute.flags.transitive", FT_BOOLEAN, 8,
TFS(&tfs_transitive_non_transitive), BGP_ATTR_FLAG_TRANSITIVE, NULL, HFILL}},
{ &hf_bgp_update_path_attribute_flags_partial,
{ "Partial", "bgp.update.path_attribute.flags.partial", FT_BOOLEAN, 8,
TFS(&tfs_partial_complete), BGP_ATTR_FLAG_PARTIAL, NULL, HFILL}},
{ &hf_bgp_update_path_attribute_flags_extended_length,
{ "Length", "bgp.update.path_attribute.flags.extended_length", FT_BOOLEAN, 8,
TFS(&tfs_extended_regular_length), BGP_ATTR_FLAG_EXTENDED_LENGTH, NULL, HFILL}},
{ &hf_bgp_update_path_attribute_type_code,
{ "Type Code", "bgp.update.path_attribute.type_code", FT_UINT8, BASE_DEC,
VALS(bgpattr_type), 0x0, NULL, HFILL}},
{ &hf_bgp_update_path_attribute_length,
{ "Length", "bgp.update.path_attribute.length", FT_UINT16, BASE_DEC,
NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_update_path_attribute_link_state,
{ "Link State", "bgp.update.path_attribute.link_state", FT_NONE, BASE_NONE,
NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_update_path_attribute_mp_reach_nlri_address_family,
{ "Address family identifier (AFI)", "bgp.update.path_attribute.mp_reach_nlri.afi", FT_UINT16, BASE_DEC,
VALS(afn_vals), 0x0, NULL, HFILL }},
{ &hf_bgp_update_path_attribute_mp_reach_nlri_safi,
{ "Subsequent address family identifier (SAFI)", "bgp.update.path_attribute.mp_reach_nlri.afi", FT_UINT8, BASE_DEC,
VALS(bgpattr_nlri_safi), 0x0, NULL, HFILL }},
{ &hf_bgp_update_path_attribute_mp_reach_nlri_next_hop,
{ "Next Hop", "bgp.update.path_attribute.mp_reach_nlri.next_hop", FT_STRING, BASE_NONE,
NULL, 0x0, NULL, HFILL }},
{ &hf_bgp_update_path_attribute_mp_reach_nlri_nbr_snpa,
{ "Number of Subnetwork points of attachment (SNPA)", "bgp.update.path_attribute.mp_reach_nlri.nbr_snpa", FT_UINT8, BASE_DEC,
NULL, 0x0, NULL, HFILL }},
{ &hf_bgp_update_path_attribute_mp_reach_nlri_snpa_length,
{ "SNPA Length", "bgp.update.path_attribute.mp_reach_nlri.snpa_length", FT_UINT8, BASE_DEC,
NULL, 0x0, NULL, HFILL }},
{ &hf_bgp_update_path_attribute_mp_reach_nlri_snpa,
{ "SNPA", "bgp.update.path_attribute.mp_reach_nlri.snpa", FT_BYTES, BASE_NONE,
NULL, 0x0, NULL, HFILL }},
{ &hf_bgp_update_path_attribute_mp_unreach_nlri_address_family,
{ "Address family identifier (AFI)", "bgp.update.path_attribute.mp_unreach_nlri.afi", FT_UINT16, BASE_DEC,
VALS(afn_vals), 0x0, NULL, HFILL }},
{ &hf_bgp_update_path_attribute_mp_unreach_nlri_safi,
{ "Subsequent address family identifier (SAFI)", "bgp.update.path_attribute.mp_unreach_nlri.afi", FT_UINT8, BASE_DEC,
VALS(bgpattr_nlri_safi), 0x0, NULL, HFILL }},
{ &hf_bgp_pmsi_tunnel_flags,
{ "Flags", "bgp.update.path_attribute.pmsi.tunnel.flags", FT_UINT8, BASE_DEC,
NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_pmsi_tunnel_type,
{ "Tunnel Type", "bgp.update.path_attribute.pmsi.tunnel.type", FT_UINT8, BASE_DEC,
VALS(pmsi_tunnel_type), 0x0, NULL, HFILL}},
{ &hf_bgp_pmsi_tunnel_id,
{ "Tunnel ID", "bgp.update.path_attribute.pmsi.tunnel.id", FT_NONE, BASE_NONE,
NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_pmsi_tunnel_not_present,
{ "Tunnel ID not present", "bgp.update.path_attribute.pmsi.tunnel_id.not_present", FT_NONE, BASE_NONE,
NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_update_mpls_label,
{ "MPLS Label Stack", "bgp.update.path_attribute.mpls_label", FT_NONE,
BASE_NONE, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_update_mpls_label_value_20bits,
{ "MPLS Label", "bgp.update.path_attribute.mpls_label_value_20bits", FT_UINT24,
BASE_DEC, NULL, 0xFFFFF0, NULL, HFILL}},
{ &hf_bgp_update_mpls_label_value,
{ "MPLS Label", "bgp.update.path_attribute.mpls_label_value", FT_UINT24,
BASE_DEC, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_pmsi_tunnel_rsvp_p2mp_id, /* RFC4875 section 19 */
{ "RSVP P2MP id", "bgp.update.path_attribute.pmsi.rsvp.id", FT_IPv4, BASE_NONE,
NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_pmsi_tunnel_rsvp_p2mp_tunnel_id,
{ "RSVP P2MP tunnel id", "bgp.update.path_attribute.pmsi.rsvp.tunnel_id", FT_UINT16, BASE_DEC,
NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_pmsi_tunnel_rsvp_p2mp_ext_tunnel_idv4,
{ "RSVP P2MP extended tunnel id", "bgp.update.path_attribute.pmsi.rsvp.ext_tunnel_idv4", FT_IPv4, BASE_NONE,
NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_pmsi_tunnel_mldp_fec_el_type,
{ "mLDP P2MP FEC element type", "bgp.update.path_attribute.pmsi.mldp.fec.type", FT_UINT8, BASE_DEC,
VALS(fec_types_vals), 0x0, NULL, HFILL}},
{ &hf_bgp_pmsi_tunnel_mldp_fec_el_afi,
{"mLDP P2MP FEC element address family", "bgp.update.path_attribute.pmsi.mldp.fec.address_family", FT_UINT16, BASE_DEC,
VALS(afn_vals), 0x0, NULL, HFILL}},
{ &hf_bgp_pmsi_tunnel_mldp_fec_el_adr_len,
{"mLDP P2MP FEC element address length", "bgp.update.path_attribute.pmsi.mldp.fec.address_length", FT_UINT8, BASE_DEC,
NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_pmsi_tunnel_mldp_fec_el_root_nodev4,
{"mLDP P2MP FEC element root node address", "bgp.update.path_attribute.pmsi.mldp.fec.root_nodev4", FT_IPv4, BASE_NONE,
NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_pmsi_tunnel_mldp_fec_el_root_nodev6,
{"mLDP P2MP FEC element root node address", "bgp.update.path_attribute.pmsi.mldp.fec.root_nodev6", FT_IPv6, BASE_NONE,
NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_pmsi_tunnel_mldp_fec_el_opa_len,
{"mLDP P2MP FEC element opaque length", "bgp.update.path_attribute.pmsi.mldp.fec.opaque_length", FT_UINT16, BASE_DEC,
NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_pmsi_tunnel_mldp_fec_el_opa_val_type,
{"mLDP P2MP FEC element opaque value type", "bgp.update.path_attribute.pmsi.mldp.fec.opaque_value_type", FT_UINT8, BASE_DEC,
VALS(pmsi_mldp_fec_opaque_value_type), 0x0, NULL, HFILL}},
{ &hf_bgp_pmsi_tunnel_mldp_fec_el_opa_val_len,
{"mLDP P2MP FEC element opaque value length", "bgp.update.path_attribute.pmsi.mldp.fec.opaque_value_length", FT_UINT16, BASE_DEC,
NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_pmsi_tunnel_mldp_fec_el_opa_value_rn,
{"mLDP P2MP FEC element opaque value unique Id", "bgp.update.path_attribute.pmsi.mldp.fec.opaque_value_unique_id_rn", FT_UINT32, BASE_DEC,
NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_pmsi_tunnel_mldp_fec_el_opa_value_str,
{"mLDP P2MP FEC element opaque value unique Id", "bgp.update.path_attribute.pmsi.mldp.fec.opaque_value_unique_id_str", FT_STRING, BASE_NONE,
NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_pmsi_tunnel_mldp_fec_el_opa_val_ext_type,
{"mLDP P2MP FEC element opaque extended value type", "bgp.update.path_attribute.pmsi.mldp.fec.opaque_ext_value_type", FT_UINT16, BASE_DEC,
VALS(pmsi_mldp_fec_opa_extented_type), 0x0, NULL, HFILL}},
{ &hf_bgp_pmsi_tunnel_mldp_fec_el_opa_val_ext_len,
{"mLDP P2MP FEC element opaque extended length", "bgp.update.path_attribute.pmsi.mldp.fec.opaque_ext_length", FT_UINT16, BASE_DEC,
NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_pmsi_tunnel_pimsm_sender,
{"PIM-SM Tree tunnel sender address", "bgp.update.path_attribute.pmsi.pimsm.sender_address", FT_IPv4, BASE_NONE,
NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_pmsi_tunnel_pimsm_pmc_group,
{"PIM-SM Tree tunnel P-multicast group", "bgp.update.path_attribute.pmsi.pimsm.pmulticast_group", FT_IPv4, BASE_NONE,
NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_pmsi_tunnel_pimssm_root_node,
{"PIM-SSM Tree tunnel Root Node", "bgp.update.path_attribute.pmsi.pimssm.root_node", FT_IPv4, BASE_NONE,
NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_pmsi_tunnel_pimssm_pmc_group,
{"PIM-SSM Tree tunnel P-multicast group", "bgp.update.path_attribute.pmsi.pimssm.pmulticast_group", FT_IPv4, BASE_NONE,
NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_pmsi_tunnel_pimbidir_sender,
{"BIDIR-PIM Tree Tunnel sender address", "bgp.update.path_attribute.pmsi.bidir_pim_tree.sender", FT_IPv4, BASE_NONE,
NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_pmsi_tunnel_pimbidir_pmc_group,
{"BIDIR-PIM Tree Tunnel P-multicast group", "bgp.update.path_attribute.pmsi.bidir_pim_tree.pmulticast_group", FT_IPv4, BASE_NONE,
NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_pmsi_tunnel_ingress_rep_addr,
{"Tunnel type ingress replication IP end point", "bgp.update.path_attribute.pmsi.ingress_rep_ip", FT_IPv4, BASE_NONE,
NULL, 0x0, NULL, HFILL}},
/* draft-ietf-idr-aigp-18 */
{ &hf_bgp_update_path_attribute_aigp,
{ "AIGP Attribute", "bgp.update.path_attribute.aigp", FT_NONE, BASE_NONE,
NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_aigp_type,
{"AIGP attribute type", "bgp.update.attribute.aigp.type", FT_UINT8, BASE_DEC,
VALS(aigp_tlv_type), 0x0, NULL, HFILL }},
{ &hf_bgp_aigp_tlv_length,
{"AIGP TLV length", "bgp.update.attribute.aigp.length", FT_UINT16, BASE_DEC,
NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_aigp_accu_igp_metric,
{"AIGP Accumulated IGP Metric", "bgp.update.attribute.aigp.accu_igp_metric", FT_UINT64, BASE_DEC,
NULL, 0x0, NULL, HFILL}},
/* RFC4456 */
{ &hf_bgp_update_path_attribute_originator_id,
{ "Originator identifier", "bgp.update.path_attribute.originator_id", FT_IPv4, BASE_NONE,
NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_update_path_attribute_cluster_list,
{ "Cluster List", "bgp.path_attribute.cluster_list", FT_NONE, BASE_NONE,
NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_update_path_attribute_cluster_id,
{ "Cluster ID", "bgp.path_attribute.cluster_id", FT_IPv4, BASE_NONE,
NULL, 0x0, NULL, HFILL}},
/* RFC5512 : BGP Encapsulation SAFI and the BGP Tunnel Encapsulation Attribute */
{ &hf_bgp_update_encaps_tunnel_tlv_len,
{ "length", "bgp.update.encaps_tunnel_tlv_len", FT_UINT16,
BASE_DEC, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_update_encaps_tunnel_tlv_type,
{ "Type code", "bgp.update.encaps_tunnel_tlv_type", FT_UINT16, BASE_DEC,
VALS(bgp_attr_tunnel_type), 0x0, NULL, HFILL}},
{ &hf_bgp_update_encaps_tunnel_subtlv_len,
{ "length", "bgp.update.encaps_tunnel_tlv_sublen", FT_UINT8,
BASE_DEC, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_update_encaps_tunnel_subtlv_type,
{ "Type code", "bgp.update.encaps_tunnel_subtlv_type", FT_UINT8, BASE_DEC,
VALS(subtlv_type), 0x0, NULL, HFILL}},
{ &hf_bgp_update_encaps_tunnel_subtlv_session_id,
{ "Session ID", "bgp.update.encaps_tunnel_tlv_subtlv_session_id", FT_UINT32,
BASE_DEC, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_update_encaps_tunnel_subtlv_cookie,
{ "Cookie", "bgp.update.encaps_tunnel_tlv_subtlv_cookie", FT_BYTES,
BASE_NONE, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_update_encaps_tunnel_subtlv_gre_key,
{ "GRE Key", "bgp.update.encaps_tunnel_tlv_subtlv_gre_key", FT_UINT16,
BASE_DEC, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_update_encaps_tunnel_subtlv_color_value,
{ "Color Value", "bgp.update.encaps_tunnel_tlv_subtlv_color_value", FT_UINT32,
BASE_DEC, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_update_encaps_tunnel_subtlv_lb_block_length,
{ "Load-balancing block length", "bgp.update.encaps_tunnel_tlv_subtlv_lb_block_length", FT_UINT16,
BASE_DEC, NULL, 0x0, NULL, HFILL}},
/* BGP update path attribut SSA SAFI (deprecated IETF draft) */
{ &hf_bgp_ssa_t,
{ "Transitive bit", "bgp.ssa_t", FT_BOOLEAN, 8,
NULL, 0x80, "SSA Transitive bit", HFILL}},
{ &hf_bgp_ssa_type,
{ "SSA Type", "bgp.ssa_type", FT_UINT16, BASE_DEC,
VALS(bgp_ssa_type), 0x7FFF, NULL, HFILL}},
{ &hf_bgp_ssa_len,
{ "Length", "bgp.ssa_len", FT_UINT16, BASE_DEC,
NULL, 0x0, "SSA Length", HFILL}},
{ &hf_bgp_ssa_value,
{ "Value", "bgp.ssa_value", FT_BYTES, BASE_NONE,
NULL, 0x0, "SSA Value", HFILL}},
{ &hf_bgp_ssa_l2tpv3_pref,
{ "Preference", "bgp.ssa_l2tpv3_pref", FT_UINT16, BASE_DEC,
NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_ssa_l2tpv3_s,
{ "Sequencing bit", "bgp.ssa_l2tpv3_s", FT_BOOLEAN, 8,
NULL, 0x80, "Sequencing S-bit", HFILL}},
{ &hf_bgp_ssa_l2tpv3_unused,
{ "Unused", "bgp.ssa_l2tpv3_Unused", FT_BOOLEAN, 8,
NULL, 0x7F, "Unused Flags", HFILL}},
{ &hf_bgp_ssa_l2tpv3_cookie_len,
{ "Cookie Length", "bgp.ssa_l2tpv3_cookie_len", FT_UINT8, BASE_DEC,
NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_ssa_l2tpv3_session_id,
{ "Session ID", "bgp.ssa_l2tpv3_session_id", FT_UINT32, BASE_DEC,
NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_ssa_l2tpv3_cookie,
{ "Cookie", "bgp.ssa_l2tpv3_cookie", FT_BYTES, BASE_NONE,
NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_withdrawn_prefix,
{ "Withdrawn prefix", "bgp.withdrawn_prefix", FT_IPv4, BASE_NONE,
NULL, 0x0, NULL, HFILL}},
/* NLRI header description */
{ &hf_bgp_update_nlri,
{ "Network Layer Reachability Information (NLRI)", "bgp.update.nlri", FT_NONE, BASE_NONE,
NULL, 0x0, NULL, HFILL}},
/* Global NLRI description */
{ &hf_bgp_mp_reach_nlri_ipv4_prefix,
{ "MP Reach NLRI IPv4 prefix", "bgp.mp_reach_nlri_ipv4_prefix", FT_IPv4, BASE_NONE,
NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_mp_unreach_nlri_ipv4_prefix,
{ "MP Unreach NLRI IPv4 prefix", "bgp.mp_unreach_nlri_ipv4_prefix", FT_IPv4, BASE_NONE,
NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_mp_reach_nlri_ipv6_prefix,
{ "MP Reach NLRI IPv6 prefix", "bgp.mp_reach_nlri_ipv6_prefix", FT_IPv6, BASE_NONE,
NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_mp_unreach_nlri_ipv6_prefix,
{ "MP Unreach NLRI IPv6 prefix", "bgp.mp_unreach_nlri_ipv6_prefix", FT_IPv6, BASE_NONE,
NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_mp_nlri_tnl_id,
{ "MP Reach NLRI Tunnel Identifier", "bgp.mp_nlri_tnl_id", FT_UINT16, BASE_HEX,
NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_nlri_prefix,
{ "NLRI prefix", "bgp.nlri_prefix", FT_IPv4, BASE_NONE,
NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_nlri_path_id,
{ "NLRI path id", "bgp.nlri_path_id", FT_UINT32, BASE_DEC,
NULL, 0x0, NULL, HFILL}},
/* mcast vpn nlri and capability */
{ &hf_bgp_mcast_vpn_nlri_t,
{ "MCAST-VPN nlri", "bgp.mcast_vpn_nlri", FT_BYTES, BASE_NONE,
NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_mcast_vpn_nlri_route_type,
{ "Route Type", "bgp.mcast_vpn_nlri_route_type", FT_UINT8,
BASE_DEC, VALS(mcast_vpn_route_type), 0x0, NULL, HFILL}},
{ &hf_bgp_mcast_vpn_nlri_length,
{ "Length", "bgp.mcast_vpn_nlri_length", FT_UINT8,
BASE_DEC, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_mcast_vpn_nlri_rd,
{ "Route Distinguisher", "bgp.mcast_vpn_nlri_rd", FT_BYTES,
BASE_NONE, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_mcast_vpn_nlri_origin_router_ipv4,
{ "Originating Router", "bgp.mcast_vpn_nlri_origin_router_ipv4", FT_IPv4,
BASE_NONE, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_mcast_vpn_nlri_origin_router_ipv6,
{ "Originating Router", "bgp.mcast_vpn_nlri_origin_router_ipv6", FT_IPv6,
BASE_NONE, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_mcast_vpn_nlri_source_as,
{ "Source AS", "bgp.mcast_vpn_nlri_source_as", FT_UINT16,
BASE_DEC, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_mcast_vpn_nlri_source_length,
{ "Multicast Source Length", "bgp.mcast_vpn_nlri_source_length", FT_UINT8,
BASE_DEC, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_mcast_vpn_nlri_group_length,
{ "Multicast Group Length", "bgp.mcast_vpn_nlri_group_length", FT_UINT8,
BASE_DEC, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_mcast_vpn_nlri_source_addr_ipv4,
{ "Multicast Source Address", "bgp.mcast_vpn_nlri_source_addr_ipv4", FT_IPv4,
BASE_NONE, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_mcast_vpn_nlri_source_addr_ipv6,
{ "Multicast Source Address", "bgp.mcast_vpn_nlri_source_addr_ipv6", FT_IPv6,
BASE_NONE, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_mcast_vpn_nlri_group_addr_ipv4,
{ "Multicast Group Address", "bgp.mcast_vpn_nlri_group_addr_ipv4", FT_IPv4,
BASE_NONE, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_mcast_vpn_nlri_group_addr_ipv6,
{ "Group Address", "bgp.mcast_vpn_nlri_group_addr_ipv6", FT_IPv6,
BASE_NONE, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_mcast_vpn_nlri_route_key,
{ "Route Key", "bgp.mcast_vpn_nlri_route_key", FT_BYTES,
BASE_NONE, NULL, 0x0, NULL, HFILL}},
/* Bgp flow spec nlri and capability */
{ &hf_bgp_flowspec_nlri_t,
{ "FLOW-SPEC nlri", "bgp.flowspec_nlri", FT_BYTES, BASE_NONE,
NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_flowspec_nlri_filter,
{ "Filter", "bgp.flowspec_nlri.filter", FT_NONE, BASE_NONE,
NULL, 0x0, NULL, HFILL }},
{ &hf_bgp_flowspec_nlri_filter_type,
{ "Filter type", "bgp.flowspec_nlri.filter_type", FT_UINT8, BASE_DEC,
VALS(flowspec_nlri_opvaluepair_type), 0x0, NULL, HFILL }},
{ &hf_bgp_flowspec_nlri_length,
{ "NRLI length", "bgp.flowspec_nlri.length", FT_UINT32, BASE_DEC,
NULL, 0x0, NULL, HFILL }},
{ &hf_bgp_flowspec_nlri_op_flags,
{ "Operator flags", "bgp.flowspec_nlri.opflags", FT_UINT8, BASE_HEX,
NULL, 0x0, NULL, HFILL }},
{ &hf_bgp_flowspec_nlri_dst_pref_ipv4,
{ "Destination IP filter", "bgp.flowspec_nlri.dst_prefix_filter", FT_IPv4,
BASE_NONE, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_flowspec_nlri_src_pref_ipv4,
{ "Source IP filter", "bgp.flowspec_nlri.src_prefix_filter", FT_IPv4,
BASE_NONE, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_flowspec_nlri_op_eol,
{ "end-of-list", "bgp.flowspec_nlri.op.eol", FT_BOOLEAN, 8,
TFS(&tfs_set_notset), BGPNLRI_FSPEC_END_OF_LST, NULL, HFILL }},
{ &hf_bgp_flowspec_nlri_op_and,
{ "and", "bgp.flowspec_nlri.op.and", FT_BOOLEAN, 8,
TFS(&tfs_set_notset), BGPNLRI_FSPEC_AND_BIT, NULL, HFILL }},
{ &hf_bgp_flowspec_nlri_op_val_len,
{ "Value length", "bgp.flowspec_nlri.op.val_len", FT_UINT8, BASE_DEC,
VALS(flow_spec_op_len_val), BGPNLRI_FSPEC_VAL_LEN, NULL, HFILL }},
{ &hf_bgp_flowspec_nlri_op_un_bit4,
{ "Reserved", "bgp.flowspec_nlri.op.un_bit4", FT_BOOLEAN, 8,
TFS(&tfs_set_notset), BGPNLRI_FSPEC_UNUSED_BIT4, "Unused (must be zero)",HFILL}},
{ &hf_bgp_flowspec_nlri_op_un_bit5,
{ "Reserved", "bgp.flowspec_nlri.op.un_bit5", FT_BOOLEAN, 8,
TFS(&tfs_set_notset), BGPNLRI_FSPEC_UNUSED_BIT5, "Unused (must be zero)", HFILL}},
{ &hf_bgp_flowspec_nlri_dec_val_8,
{ "Decimal value", "bgp.flowspec_nlri.dec_val_8", FT_UINT8, BASE_DEC,
NULL, 0X0, NULL, HFILL }},
{ &hf_bgp_flowspec_nlri_dec_val_16,
{ "Decimal value", "bgp.flowspec_nlri.dec_val_16", FT_UINT16, BASE_DEC,
NULL, 0X0, NULL, HFILL }},
{ &hf_bgp_flowspec_nlri_dec_val_32,
{ "Decimal value", "bgp.flowspec_nlri.dec_val_32", FT_UINT32, BASE_DEC,
NULL, 0X0, NULL, HFILL }},
{ &hf_bgp_flowspec_nlri_dec_val_64,
{ "Decimal value", "bgp.flowspec_nlri.dec_val_64", FT_UINT64, BASE_DEC,
NULL, 0X0, NULL, HFILL }},
{ &hf_bgp_flowspec_nlri_op_lt,
{ "less than", "bgp.flowspec_nlri.op.lt", FT_BOOLEAN, 8,
TFS(&tfs_set_notset), BGPNLRI_FSPEC_LESS_THAN, NULL, HFILL }},
{ &hf_bgp_flowspec_nlri_op_gt,
{ "greater than", "bgp.flowspec_nlri.op.gt", FT_BOOLEAN, 8,
TFS(&tfs_set_notset), BGPNLRI_FSPEC_GREATER_THAN, NULL, HFILL }},
{ &hf_bgp_flowspec_nlri_op_eq,
{ "equal", "bgp.flowspec_nlri.op.equal", FT_BOOLEAN, 8,
TFS(&tfs_set_notset), BGPNLRI_FSPEC_EQUAL, NULL, HFILL }},
{ &hf_bgp_flowspec_nlri_op_flg_not,
{ "logical negation", "bgp.flowspec_nlri.op.flg_not", FT_BOOLEAN, 8,
TFS(&tfs_set_notset), BGPNLRI_FSPEC_TCPF_NOTBIT, NULL, HFILL }},
{ &hf_bgp_flowspec_nlri_op_flg_match,
{ "Match bit", "bgp.flowspec_nlri.op.flg_match", FT_BOOLEAN, 8,
TFS(&tfs_set_notset), BGPNLRI_FSPEC_TCPF_MATCHBIT, NULL, HFILL }},
{ &hf_bgp_flowspec_nlri_tcp_flags,
{ "TCP flags", "bgp.flowspec_nlri.val_tcp.flags", FT_UINT8, BASE_HEX,
NULL, 0x0, NULL, HFILL }},
{ &hf_bgp_flowspec_nlri_tcp_flags_cwr,
{ "Congestion Window Reduced (CWR)", "bgp.flowspec_nlri.val_tcp.flags.cwr", FT_BOOLEAN, 8,
TFS(&tfs_set_notset), BGPNLRI_FSPEC_TH_CWR, NULL, HFILL }},
{ &hf_bgp_flowspec_nlri_tcp_flags_ecn,
{ "ECN-Echo", "bgp.flowspec_nlri.val_tcp.flags.ecn", FT_BOOLEAN, 8,
TFS(&tfs_set_notset), BGPNLRI_FSPEC_TH_ECN, NULL, HFILL }},
{ &hf_bgp_flowspec_nlri_tcp_flags_urg,
{ "Urgent", "bgp.flowspec_nlri.val_tcp.flags.urg", FT_BOOLEAN, 8,
TFS(&tfs_set_notset), BGPNLRI_FSPEC_TH_URG, NULL, HFILL }},
{ &hf_bgp_flowspec_nlri_tcp_flags_ack,
{ "Acknowledgment", "bgp.flowspec_nlri.val_tcp.flags.ack", FT_BOOLEAN, 8,
TFS(&tfs_set_notset), BGPNLRI_FSPEC_TH_ACK, NULL, HFILL }},
{ &hf_bgp_flowspec_nlri_tcp_flags_push,
{ "Push", "bgp.flowspec_nlri.val_tcp.flags.push", FT_BOOLEAN, 8,
TFS(&tfs_set_notset), BGPNLRI_FSPEC_TH_PUSH, NULL, HFILL }},
{ &hf_bgp_flowspec_nlri_tcp_flags_reset,
{ "Reset", "bgp.flowspec_nlri.val_tcp.flags.reset", FT_BOOLEAN, 8,
TFS(&tfs_set_notset), BGPNLRI_FSPEC_TH_RST, NULL, HFILL }},
{ &hf_bgp_flowspec_nlri_tcp_flags_syn,
{ "Syn", "bgp.flowspec_nlri.val_tcp.flags.syn", FT_BOOLEAN, 8,
TFS(&tfs_set_notset), BGPNLRI_FSPEC_TH_SYN, NULL, HFILL }},
{ &hf_bgp_flowspec_nlri_tcp_flags_fin,
{ "Fin", "bgp.flowspec_nlri.val_tcp.flags.fin", FT_BOOLEAN, 8,
TFS(&tfs_set_notset), BGPNLRI_FSPEC_TH_FIN, NULL, HFILL }},
{ &hf_bgp_flowspec_nlri_fflag,
{ "Fragment Flag", "bgp.flowspec_nlri.val_frag", FT_UINT8, BASE_HEX,
NULL, 0x0, NULL, HFILL }},
{ &hf_bgp_flowspec_nlri_fflag_lf,
{ "Last fragment", "bgp.flowspec_nlri.val_frag_lf", FT_BOOLEAN, 8,
TFS(&tfs_set_notset), BGPNLRI_FSPEC_FG_LF, NULL, HFILL }},
{ &hf_bgp_flowspec_nlri_fflag_ff,
{ "First fragment", "bgp.flowspec_nlri.val_frag_ff", FT_BOOLEAN, 8,
TFS(&tfs_set_notset), BGPNLRI_FSPEC_FG_FF, NULL, HFILL }},
{ &hf_bgp_flowspec_nlri_fflag_isf,
{ "Is a fragment", "bgp.flowspec_nlri.val_frag_isf", FT_BOOLEAN, 8,
TFS(&tfs_set_notset), BGPNLRI_FSPEC_FG_ISF, NULL, HFILL }},
{ &hf_bgp_flowspec_nlri_fflag_df,
{ "Don't fragment", "bgp.flowspec_nlri.val_frag_df", FT_BOOLEAN, 8,
TFS(&tfs_set_notset), BGPNLRI_FSPEC_FG_DF, NULL, HFILL }},
{ &hf_bgp_flowspec_nlri_dscp,
{ "Differentiated Services Codepoint", "bgp.flowspec_nlri.val_dsfield", FT_UINT8, BASE_HEX | BASE_EXT_STRING,
&dscp_vals_ext, BGPNLRI_FSPEC_DSCP_BITMASK, NULL, HFILL }},
{ &hf_bgp_flowspec_nlri_src_ipv6_pref,
{ "Source IPv6 prefix", "bgp.flowspec_nlri.src_ipv6_pref", FT_IPv6, BASE_NONE,
NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_flowspec_nlri_dst_ipv6_pref,
{ "Destination IPv6 prefix", "bgp.flowspec_nlri.dst_ipv6_pref", FT_IPv6, BASE_NONE,
NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_flowspec_nlri_ipv6_pref_len,
{ "IPv6 prefix length", "bgp.flowspec_nlri.ipv6_pref_length", FT_UINT8, BASE_DEC,
NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_flowspec_nlri_ipv6_pref_offset,
{ "IPv6 prefix offset", "bgp.flowspec_nlri.ipv6_pref_offset", FT_UINT8, BASE_DEC,
NULL, 0x0, NULL, HFILL}},
/* end of bgp flow spec */
/* BGP update safi ndt nlri draft-nalawade-idr-mdt-safi-03 */
{ &hf_bgp_mdt_nlri_safi_rd,
{ "Route Distinguisher", "bgp.mdt_safi_rd", FT_BYTES,
BASE_NONE, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_mdt_nlri_safi_ipv4_addr,
{ "IPv4 Address", "bgp.mdt_safi_ipv4_addr", FT_IPv4,
BASE_NONE, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_mdt_nlri_safi_group_addr,
{ "Group Address", "bgp.mdt_safi_group_addr", FT_IPv4,
BASE_NONE, NULL, 0x0, NULL, HFILL}},
/* BGP update extended community header field */
{ &hf_bgp_ext_communities,
{ "Carried extended communities", "bgp.ext_communities", FT_NONE, BASE_NONE,
NULL, 0x0, NULL, HFILL }},
{ &hf_bgp_ext_community,
{ "Community", "bgp.ext_community", FT_NONE, BASE_NONE,
NULL, 0x0, NULL, HFILL }},
{ &hf_bgp_ext_com_type_high,
{ "Community type high", "bgp.ext_com.type_high", FT_UINT8, BASE_HEX,
VALS(bgpext_com_type_high), 0x0, "Type high unknown", HFILL }},
{ &hf_bgp_ext_com_stype_low_unknown,
{ "Community subtype low: unknown", "bgp.ext_com.type_low", FT_UINT8, BASE_HEX,
NULL, 0x0, NULL, HFILL }},
{ &hf_bgp_ext_com_stype_tr_evpn,
{ "Subtype evpn", "bgp.ext_com.stype_tr_evpn", FT_UINT8, BASE_HEX,
VALS(bgpext_com_stype_tr_evpn), 0x0, "Subtype unknown", HFILL}},
{ &hf_bgp_ext_com_stype_tr_as2,
{ "Subtype as2", "bgp.ext_com.stype_tr_as2", FT_UINT8, BASE_HEX,
VALS(bgpext_com_stype_tr_as2), 0x0, "Subtype unknown", HFILL}},
{ &hf_bgp_ext_com_stype_ntr_as2,
{ "Subtype non-transitive as2", "bgp.ext_com.stype_ntr_as2", FT_UINT8, BASE_HEX,
VALS(bgpext_com_stype_ntr_as2), 0x0, "Subtype unknown", HFILL}},
{ &hf_bgp_ext_com_stype_tr_as4,
{ "Subtype as4", "bgp.ext_com.stype_tr_as4", FT_UINT8, BASE_HEX,
VALS(bgpext_com_stype_tr_as4), 0x0, "Subtype unknown", HFILL}},
{ &hf_bgp_ext_com_stype_ntr_as4,
{ "Subtype non-transitive as4", "bgp.ext_com.stype_ntr_as4", FT_UINT8, BASE_HEX,
VALS(bgpext_com_stype_ntr_as4), 0x0, "Subtype unknown", HFILL}},
{ &hf_bgp_ext_com_stype_tr_IP4,
{ "Subtype IPv4", "bgp.ext_com.stype_tr_IP4", FT_UINT8, BASE_HEX,
VALS(bgpext_com_stype_tr_IP4), 0x0, "Subtype unknown", HFILL}},
{ &hf_bgp_ext_com_stype_tr_opaque,
{ "Subtype opaque", "bgp.ext_com.stype_tr_opaque", FT_UINT8, BASE_HEX,
VALS(bgpext_com_stype_tr_opaque), 0x0, "Subtype unknown", HFILL}},
{ &hf_bgp_ext_com_stype_ntr_opaque,
{ "Subtype opaque", "bgp.ext_com.stype_ntr_opaque", FT_UINT8, BASE_HEX,
VALS(bgpext_com_stype_ntr_opaque), 0x0, "Subtype unknown", HFILL}},
{ &hf_bgp_ext_com_tunnel_type,
{ "Tunnel types", "bgp.ext_com.tunnel_type", FT_UINT16, BASE_DEC,
VALS(bgpext_com_tunnel_type), 0x0, "Type unknown", HFILL}},
{ &hf_bgp_ext_com_stype_tr_exp,
{ "Subtype Experimental", "bgp.ext_com.stype_tr_exp", FT_UINT8, BASE_HEX,
VALS(bgpext_com_stype_tr_exp), 0x0, "Subtype unknown", HFILL}},
{ &hf_bgp_ext_com_stype_tr_exp_fs_ip4,
{ "Subtype Experimental Flow spec", "bgp.ext_com.stype_tr_exp_fs_ip4", FT_UINT8, BASE_HEX,
VALS(bgpext_com_stype_tr_exp_fs_ip4), 0x0, "Subtype unknown", HFILL}},
{ &hf_bgp_ext_com_stype_tr_exp_fs_as4,
{ "Subtype Experimental Flow spec", "bgp.ext_com.stype_tr_exp_fs_as4", FT_UINT8, BASE_HEX,
VALS(bgpext_com_stype_tr_exp_fs_as4), 0x0, "Subtype unknown", HFILL}},
{ &hf_bgp_ext_com_value_as2,
{ "Two octets AS specific", "bgp.ext_com.value_as2", FT_UINT16, BASE_DEC,
NULL, 0x0, NULL, HFILL }},
{ &hf_bgp_ext_com_value_as4,
{ "Four octets AS specific", "bgp.ext_com.value_as4", FT_UINT32, BASE_DEC,
NULL, 0x0, NULL, HFILL }},
{ &hf_bgp_ext_com_value_IP4,
{ "IPv4 address specific", "bgp.ext_com.value_IP4", FT_IPv4, BASE_NONE,
NULL, 0x0, NULL, HFILL }},
{ &hf_bgp_ext_com_value_an2,
{ "Two octets AN specific", "bgp.ext_com.value_an2", FT_UINT16, BASE_DEC,
NULL, 0x0, NULL, HFILL }},
{ &hf_bgp_ext_com_value_an4,
{ "Four octets AN specific", "bgp.ext_com.value_an4", FT_UINT32, BASE_DEC,
NULL, 0x0, NULL, HFILL }},
{ &hf_bgp_ext_com_value_link_bw,
{ "Link bandwidth", "bgp.ext_com.value_link_bw", FT_FLOAT, BASE_NONE,
NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_ext_com_value_ospf_rtype,
{ "OSPF route type", "bgp.ext_com.value_ospf_rtype", FT_UINT8, BASE_DEC,
VALS(bgpext_com_ospf_rtype), 0x0, "OSPF route type unknown", HFILL}},
{ &hf_bgp_ext_com_value_ospf_rtype_option,
{ "OSPF route option", "bgp.ext_com.value_ospf_rtype_option", FT_BOOLEAN, 8,
TFS(&tfs_set_notset), BGP_OSPF_RTYPE_METRIC_TYPE, NULL, HFILL }},
{ &hf_bgp_ext_com_value_fs_remark,
{ "Remarking value", "bgp.ext_com.value_fs_dscp", FT_UINT8, BASE_HEX | BASE_EXT_STRING,
&dscp_vals_ext, BGPNLRI_FSPEC_DSCP_BITMASK, NULL, HFILL }},
{ &hf_bgp_ext_com_value_unknown16,
{ "Two octets Value specific", "bgp.ext_com.value_2octets", FT_UINT16, BASE_HEX,
NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_ext_com_value_unknown32,
{ "Four octets Value specific", "bgp.ext_com.value_4octets", FT_UINT32, BASE_HEX,
NULL, 0x0, NULL, HFILL}},
/* BGP update extended community flow spec RFC 5575 */
{ &hf_bgp_ext_com_flow_act_samp_act,
{ "Sample", "bgp.ext_com_flow.sample", FT_BOOLEAN, 8,
TFS(&tfs_set_notset), BGP_EXT_COM_FSPEC_ACT_S, NULL, HFILL }},
{ &hf_bgp_ext_com_flow_act_term_act,
{ "Terminal action", "bgp.ext_com_flow.traff_act", FT_BOOLEAN, 8,
TFS(&tfs_set_notset),BGP_EXT_COM_FSPEC_ACT_T,NULL, HFILL}},
{ &hf_bgp_ext_com_flow_rate_float,
{ "Rate shaper", "bgp.ext_com_flow.rate_limit", FT_FLOAT, BASE_NONE,
NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_ext_com_flow_act_allset,
{ "5 Bytes", "bgp.flowspec_ext_com.emptybytes", FT_BYTES, BASE_NONE,
NULL, 0x0, "Must be set to all 0", HFILL }},
/* BGP QoS propagation draft-knoll-idr-qos-attribute */
{ &hf_bgp_ext_com_qos_flags,
{ "Flags", "bgp.ext_com_qos.flags", FT_UINT8, BASE_HEX,
NULL, 0, NULL, HFILL}},
{ &hf_bgp_ext_com_qos_flags_remarking,
{ "Remarking", "bgp.ext_com_qos.flags.remarking", FT_BOOLEAN, 8,
TFS(&tfs_yes_no), 0x10, NULL, HFILL}},
{ &hf_bgp_ext_com_qos_flags_ignore_remarking,
{ "Ignore remarking", "bgp.ext_com_qos.flags.ignore_remarking", FT_BOOLEAN, 8,
TFS(&tfs_yes_no), 0x08, NULL, HFILL}},
{ &hf_bgp_ext_com_qos_flags_agg_marking,
{ "Aggegation of markins", "bgp.ext_com_qos.flags.agg_marking", FT_BOOLEAN, 8,
TFS(&tfs_yes_no), 0x04, NULL, HFILL}},
{ &hf_bgp_ext_com_cos_flags,
{ "Flags byte", "bgp.ext_com_cos.flags", FT_UINT8, BASE_HEX,
NULL, 0, NULL, HFILL}},
{ &hf_bgp_ext_com_cos_flags_be,
{ "BE class", "bgp.ext_com_cos.flags.be", FT_BOOLEAN, 8,
TFS(&tfs_supported_not_supported), 0x80, NULL, HFILL}},
{ &hf_bgp_ext_com_cos_flags_ef,
{ "EF class", "bgp.ext_com_cos.flags.ef", FT_BOOLEAN, 8,
TFS(&tfs_supported_not_supported), 0x40, NULL, HFILL}},
{ &hf_bgp_ext_com_cos_flags_af,
{ "AF class", "bgp.ext_com_cos.flags.af", FT_BOOLEAN, 8,
TFS(&tfs_supported_not_supported), 0x20, NULL, HFILL}},
{ &hf_bgp_ext_com_cos_flags_le,
{ "LE class", "bgp.ext_com_cos.flags.le", FT_BOOLEAN, 8,
TFS(&tfs_supported_not_supported), 0x10, NULL, HFILL}},
{ &hf_bgp_ext_com_qos_set_number,
{ "QoS Set Number", "bgp.ext_com_qos.set_number", FT_UINT8, BASE_HEX,
NULL, 0, NULL, HFILL}},
{ &hf_bgp_ext_com_qos_tech_type,
{ "Technology Type", "bgp.ext_com_qos.tech_type", FT_UINT8, BASE_HEX,
VALS(qos_tech_type), 0, NULL, HFILL}},
{ &hf_bgp_ext_com_qos_marking_o,
{ "QoS Marking O", "bgp.ext_com_qos.marking_o", FT_UINT16, BASE_HEX,
NULL, 0, NULL, HFILL}},
{ &hf_bgp_ext_com_qos_marking_a,
{ "QoS Marking A", "bgp.ext_com_qos.marking_a", FT_UINT8, BASE_HEX_DEC,
NULL, 0, NULL, HFILL}},
{ &hf_bgp_ext_com_qos_default_to_zero,
{ "Defaults to zero", "bgp.ext_com_qos.default_to_zero", FT_UINT8, BASE_HEX,
NULL, 0, NULL, HFILL}},
/* BGP L2 extended community RFC 4761, RFC 6624 */
/* draft-ietf-l2vpn-vpls-multihoming */
{ &hf_bgp_ext_com_l2_encaps,
{ "Encaps Type", "bgp.ext_com_l2.encaps_type", FT_UINT8, BASE_DEC,
VALS(bgp_l2vpn_encaps), 0, NULL, HFILL}},
{ &hf_bgp_ext_com_l2_c_flags,
{ "Control Flags", "bgp.ext_com_l2.c_flags", FT_UINT8, BASE_HEX,
NULL, 0x0, NULL, HFILL }},
{ &hf_bgp_ext_com_l2_flag_d,
{ "Down flag", "bgp.ext_com_l2.flag_d",FT_BOOLEAN, 8,
TFS(&tfs_set_notset), BGP_EXT_COM_L2_FLAG_D, NULL, HFILL }},
{ &hf_bgp_ext_com_l2_flag_z1,
{ "Unassigned", "bgp.ext_com_l2.flag_z1",FT_UINT8, BASE_DEC,
NULL, BGP_EXT_COM_L2_FLAG_Z1, "Must be Zero", HFILL }},
{ &hf_bgp_ext_com_l2_flag_f,
{ "Flush flag", "bgp.ext_com_l2.flag_f",FT_BOOLEAN, 8,
TFS(&tfs_set_notset), BGP_EXT_COM_L2_FLAG_F, NULL, HFILL }},
{ &hf_bgp_ext_com_l2_flag_z345,
{ "Unassigned", "bgp.ext_com_l2.flag_z345",FT_UINT8, BASE_DEC,
NULL, BGP_EXT_COM_L2_FLAG_Z345, "Must be Zero", HFILL }},
{ &hf_bgp_ext_com_l2_flag_c,
{ "C flag", "bgp.ext_com_l2.flag_c",FT_BOOLEAN, 8,
TFS(&tfs_set_notset), BGP_EXT_COM_L2_FLAG_C, NULL, HFILL }},
{ &hf_bgp_ext_com_l2_flag_s,
{ "S flag", "bgp.ext_com_l2.flag_s",FT_BOOLEAN, 8,
TFS(&tfs_set_notset), BGP_EXT_COM_L2_FLAG_S, NULL, HFILL }},
{ &hf_bgp_ext_com_l2_mtu,
{ "Layer-2 MTU", "bgp.ext_com_l2.l2_mtu", FT_UINT16, BASE_DEC,
NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_ext_com_l2_esi_label_flag,
{ "Single active bit", "bgp.ext_com_l2.esi_label_flag",FT_BOOLEAN, 8,
TFS(&tfs_esi_label_flag), BGP_EXT_COM_ESI_LABEL_FLAGS, NULL, HFILL }},
/* idr-ls-03 */
{ &hf_bgp_ls_type,
{ "Type", "bgp.ls.type", FT_UINT16, BASE_DEC,
NULL, 0x0, "BGP-LS message type", HFILL }},
{ &hf_bgp_ls_length,
{ "Length", "bgp.ls.length", FT_UINT16, BASE_DEC,
NULL, 0x0, "The total length of the message payload in octets", HFILL }},
{ &hf_bgp_ls_safi72_nlri,
{ "Link State SAFI 72 NLRI", "bgp.ls.nlri_safi72", FT_NONE,
BASE_NONE, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_ls_safi128_nlri,
{ "Link State SAFI 128 NLRI", "bgp.ls.nlri_safi128", FT_NONE,
BASE_NONE, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_ls_safi128_nlri_route_distinguisher,
{ "Route Distinguisher", "bgp.ls.nlri_safi128_route_distinguisher", FT_NONE,
BASE_NONE, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_ls_safi128_nlri_route_distinguisher_type,
{ "Route Distinguisher Type", "bgp.ls.nlri_safi128_route_distinguisher_type", FT_UINT16,
BASE_DEC, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_ls_safi128_nlri_route_dist_admin_asnum_2,
{ "Administrator Subfield", "bgp.ls.nlri_safi128_route_distinguisher_admin_as_num_2", FT_UINT16,
BASE_DEC, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_ls_safi128_nlri_route_dist_admin_ipv4,
{ "Administrator Subfield", "bgp.ls.nlri_safi128_route_distinguisher_admin_ipv4", FT_IPv4,
BASE_NONE, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_ls_safi128_nlri_route_dist_admin_asnum_4,
{ "Administrator Subfield", "bgp.ls.nlri_safi128_route_distinguisher_admin_as_num_4", FT_UINT32,
BASE_HEX_DEC, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_ls_safi128_nlri_route_dist_asnum_2,
{ "Assigned Number Subfield", "bgp.ls.nlri_safi128_route_distinguisher_asnum_2", FT_UINT16,
BASE_DEC, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_ls_safi128_nlri_route_dist_asnum_4,
{ "Assigned Number Subfield", "bgp.ls.nlri_safi128_route_distinguisher_asnum_4", FT_UINT32,
BASE_HEX_DEC, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_ls_nlri_type,
{ "NLRI Type", "bgp.ls.nlri_type", FT_UINT16,
BASE_DEC, VALS(bgp_ls_nlri_type_vals), 0x0, NULL, HFILL}},
{ &hf_bgp_ls_nlri_length,
{ "NLRI Length", "bgp.ls.nlri_length", FT_UINT16,
BASE_DEC, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_ls_nlri_link_nlri_type,
{ "Link-State NLRI Link NLRI", "bgp.ls.nlri_link", FT_NONE,
BASE_NONE, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_ls_nlri_link_descriptors_tlv,
{ "Link Descriptors TLV", "bgp.ls.nlri_link_descriptors_tlv", FT_NONE,
BASE_NONE, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_ls_nlri_prefix_descriptors_tlv,
{ "Prefix Descriptors TLV", "bgp.ls.nlri_prefix_descriptors_tlv", FT_NONE,
BASE_NONE, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_ls_nlri_link_local_identifier,
{ "Link Local Identifier", "bgp.ls.nlri_link_local_identifier", FT_UINT32,
BASE_HEX_DEC, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_ls_nlri_link_remote_identifier,
{ "Link Remote Identifier", "bgp.ls.nlri_link_remote_identifier", FT_UINT32,
BASE_HEX_DEC, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_ls_nlri_ipv4_interface_address,
{ "IPv4 Interface Address", "bgp.ls.nlri_ipv4_interface_address", FT_IPv4,
BASE_NONE, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_ls_nlri_ipv4_neighbor_address,
{ "IPv4 Neighbor Address", "bgp.ls.nlri_ipv4_neighbor_address", FT_IPv4,
BASE_NONE, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_ls_nlri_ipv6_interface_address,
{ "IPv6 Interface Address", "bgp.ls.nlri_ipv6_interface_address", FT_IPv6,
BASE_NONE, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_ls_nlri_ipv6_neighbor_address,
{ "IPv6 Neighbor Address", "bgp.ls.nlri_ipv6_neighbor_address", FT_IPv6,
BASE_NONE, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_ls_nlri_multi_topology_id,
{ "Multi Topology ID", "bgp.ls.nlri_multi_topology_id", FT_UINT16,
BASE_DEC_HEX, NULL, 0xfff, NULL, HFILL}},
{ &hf_bgp_ls_nlri_ospf_route_type,
{ "OSPF Route Type", "bgp.ls.nlri_ospf_route_type", FT_UINT8,
BASE_DEC, VALS(link_state_prefix_descriptors_ospf_route_type), 0x0, NULL, HFILL}},
{ &hf_bgp_ls_nlri_ip_reachability_prefix_length,
{ "Prefix Length in bits", "bgp.ls.nlri_ip_reachability_prefix_length", FT_UINT8,
BASE_DEC, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_ls_nlri_ip_reachability_prefix_ip,
{ "Prefix IP", "bgp.ls.nlri_ip_reachability_prefix_ip", FT_BYTES,
BASE_NONE, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_ls_nlri_node_nlri_type,
{ "Link-State NLRI Node NLRI", "bgp.ls.nlri_node", FT_NONE,
BASE_NONE, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_ls_nlri_node_protocol_id,
{ "Protocol ID", "bgp.ls.nlri_node.protocol_id", FT_UINT8,
BASE_DEC, VALS(link_state_nlri_protocol_id_values), 0x0, NULL, HFILL }},
{ &hf_bgp_ls_nlri_node_identifier,
{ "Identifier", "bgp.ls.nlri_node.identifier", FT_UINT64,
BASE_DEC | BASE_VAL64_STRING, VALS64(link_state_nlri_routing_universe_values), 0x0, NULL, HFILL }},
{ &hf_bgp_ls_ipv4_topology_prefix_nlri_type,
{ "Link-State NLRI IPv4 Topology Prefix", "bgp.ls.ipv4_topology_prefix", FT_NONE,
BASE_NONE, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_ls_ipv6_topology_prefix_nlri_type,
{ "Link-State NLRI IPv6 Topology Prefix", "bgp.ls.ipv6_topology_prefix", FT_NONE,
BASE_NONE, NULL, 0x0, NULL, HFILL}},
/* NLRI TLVs */
{ &hf_bgp_ls_tlv_local_node_descriptors,
{ "Local Node Descriptors TLV", "bgp.ls.tlv.local_node_descriptors", FT_NONE,
BASE_NONE, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_ls_tlv_remote_node_descriptors,
{ "Remote Node Descriptors TLV", "bgp.ls.tlv.remote_node_descriptors", FT_NONE,
BASE_NONE, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_ls_tlv_autonomous_system,
{ "Autonomous System TLV", "bgp.ls.tlv.autonomous_system", FT_NONE,
BASE_NONE, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_ls_tlv_autonomous_system_id,
{ "AS ID", "bgp.ls.tlv.autonomous_system.id", FT_UINT32,
BASE_DEC_HEX, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_ls_tlv_bgp_ls_identifier,
{ "BGP-LS Identifier TLV", "bgp.ls.tlv.bgp_ls_identifier", FT_NONE,
BASE_NONE, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_ls_tlv_bgp_ls_identifier_id,
{ "BGP-LS ID", "bgp.ls.tlv.bgp_ls_identifier_id", FT_UINT32,
BASE_DEC_HEX, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_ls_tlv_area_id,
{ "Area ID TLV", "bgp.ls.tlv.area_id", FT_NONE,
BASE_NONE, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_ls_tlv_area_id_id,
{ "Area ID", "bgp.ls.tlv.area_id.id", FT_UINT32,
BASE_DEC_HEX, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_ls_tlv_ipv4_router_id_of_local_node,
{ "IPv4 Router-ID of Local Node TLV", "bgp.ls.tlv.ipv4_router_id_of_local_node", FT_NONE,
BASE_NONE, NULL, 0x0, NULL, HFILL }},
{ &hf_bgp_ls_tlv_ipv4_router_id_value,
{ "IPv4 Router-ID", "bgp.ls.tlv.ipv4_router_id_value", FT_IPv4,
BASE_NONE, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_ls_tlv_ipv6_router_id_of_local_node,
{ "IPv6 Router-ID of Local Node TLV", "bgp.ls.tlv.ipv6_router_id_of_local_node", FT_NONE,
BASE_NONE, NULL, 0x0, NULL, HFILL }},
{ &hf_bgp_ls_tlv_ipv6_router_id_value,
{ "IPv6 Router-ID", "bgp.ls.tlv.ipv6_router_id_of_local_node_value", FT_IPv6,
BASE_NONE, NULL, 0x0, NULL, HFILL }},
{ &hf_bgp_ls_tlv_ipv4_router_id_of_remote_node,
{ "IPv4 Router-ID of Remote Node TLV", "bgp.ls.tlv.ipv4_router_id_of_remote_node", FT_NONE,
BASE_NONE, NULL, 0x0, NULL, HFILL }},
{ &hf_bgp_ls_tlv_ipv6_router_id_of_remote_node,
{ "IPv6 Router-ID of Remote Node TLV", "bgp.ls.tlv.ipv6_router_id_of_remote_node", FT_NONE,
BASE_NONE, NULL, 0x0, NULL, HFILL }},
{ &hf_bgp_ls_tlv_link_local_remote_identifiers,
{ "Link Local/Remote Identifiers TLV", "bgp.ls.tlv.link_local_remote_identifiers", FT_NONE,
BASE_NONE, NULL, 0x0, NULL, HFILL }},
{ &hf_bgp_ls_tlv_ipv4_interface_address,
{ "IPv4 interface address TLV", "bgp.ls.tlv.ipv4_interface_address", FT_NONE,
BASE_NONE, NULL, 0x0, NULL, HFILL }},
{ &hf_bgp_ls_tlv_ipv4_neighbor_address,
{ "IPv4 neighbor address TLV", "bgp.ls.tlv.ipv4_neighbor_address", FT_NONE,
BASE_NONE, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_ls_tlv_ipv6_interface_address,
{ "IPv6 interface address TLV", "bgp.ls.tlv.ipv6_interface_address", FT_NONE,
BASE_NONE, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_ls_tlv_ipv6_neighbor_address,
{ "IPv6 neighbor address TLV", "bgp.ls.tlv.ipv6_neighbor_address", FT_NONE,
BASE_NONE, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_ls_tlv_multi_topology_id,
{ "Multi Topology ID TLV", "bgp.ls.tlv.multi_topology_id", FT_NONE,
BASE_NONE, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_ls_tlv_ospf_route_type,
{ "OSPF Route Type TLV", "bgp.ls.tlv.ospf_route_type", FT_NONE,
BASE_NONE, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_ls_tlv_ip_reachability_information,
{ "IP Reachability Information TLV", "bgp.ls.tlv.ip_reachability_information", FT_NONE,
BASE_NONE, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_ls_tlv_administrative_group_color,
{ "Administrative group (color) TLV", "bgp.ls.tlv.administrative_group_color", FT_NONE,
BASE_NONE, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_ls_tlv_administrative_group_color_value,
{ "Group Mask", "bgp.ls.tlv.administrative_group_color_value", FT_UINT32,
BASE_DEC, NULL, 0xffff, NULL, HFILL}},
{ &hf_bgp_ls_tlv_administrative_group,
{ "Group", "bgp.ls.tlv.administrative_group", FT_UINT32,
BASE_DEC, NULL, 0xffff, NULL, HFILL}},
{ &hf_bgp_ls_tlv_max_link_bandwidth,
{ "Maximum link bandwidth TLV", "bgp.ls.tlv.maximum_link_bandwidth", FT_NONE,
BASE_NONE, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_ls_tlv_max_reservable_link_bandwidth,
{ "Maximum reservable link bandwidth TLV", "bgp.ls.tlv.maximum_reservable_link_bandwidth", FT_NONE,
BASE_NONE, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_ls_tlv_unreserved_bandwidth,
{ "Unreserved bandwidth TLV", "bgp.ls.tlv.unreserved_bandwidth", FT_NONE,
BASE_NONE, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_ls_bandwidth_value,
{"Bandwidth", "bgp.ls.bandwidth_value", FT_FLOAT,
BASE_NONE, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_ls_tlv_te_default_metric,
{ "TE Default Metric TLV", "bgp.ls.tlv.te_default_metric", FT_NONE,
BASE_NONE, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_ls_tlv_te_default_metric_value,
{ "TE Default Metric", "bgp.ls.tlv.te_default_metric_value", FT_UINT24,
BASE_HEX_DEC, NULL, 0x0, NULL, HFILL }},
{ &hf_bgp_ls_tlv_link_protection_type,
{ "Link Protection Type TLV", "bgp.ls.tlv.link_protection_type", FT_NONE,
BASE_NONE, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_ls_tlv_link_protection_type_value,
{ "Protection Capabilities", "bgp.ls.tlv.link_protection_type_value", FT_NONE,
BASE_NONE, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_ls_tlv_mpls_protocol_mask,
{ "MPLS Protocol Mask TLV", "bgp.ls.tlv.mpls_protocol_mask", FT_NONE,
BASE_NONE, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_ls_tlv_metric,
{ "Metric TLV", "bgp.ls.tlv.metric", FT_NONE,
BASE_NONE, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_ls_tlv_metric_value,
{ "IGP Metric", "bgp.ls.tlv.metric_value", FT_UINT24,
BASE_HEX_DEC, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_ls_tlv_shared_risk_link_group,
{ "Shared Risk Link Group TLV", "bgp.ls.tlv.shared_risk_link_group", FT_NONE,
BASE_NONE, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_ls_tlv_shared_risk_link_group_value,
{ "Shared Risk Link Group Value", "bgp.ls.tlv.shared_risk_link_group_value", FT_UINT32,
BASE_HEX_DEC, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_ls_tlv_opaque_link_attribute,
{ "Opaque Link Attribute TLV", "bgp.ls.tlv.opaque_link_attribute", FT_NONE,
BASE_NONE, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_ls_tlv_opaque_link_attribute_value,
{ "Opaque link attributes", "bgp.ls.tlv.opaque_link_attribute_value", FT_NONE,
BASE_NONE, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_ls_tlv_link_name_attribute,
{ "Opaque Link Attribute TLV", "bgp.ls.tlv.link_name_attribute", FT_NONE,
BASE_NONE, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_ls_tlv_link_name_attribute_value,
{"Link Name", "bgp.ls.tlv.link_name_attribute_value", FT_STRING,
STR_ASCII, NULL, 0, NULL, HFILL }},
{ &hf_bgp_ls_tlv_igp_flags,
{ "IGP Flags TLV", "bgp.ls.tlv.igp_flags", FT_NONE,
BASE_NONE, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_ls_tlv_route_tag,
{ "Route Tag TLV", "bgp.ls.tlv.route_tag", FT_NONE,
BASE_NONE, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_ls_tlv_route_tag_value,
{ "Route Tag Value", "bgp.ls.tlv.route_tag_value", FT_UINT32,
BASE_HEX_DEC, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_ls_tlv_route_extended_tag,
{ "Extended Route Tag TLV", "bgp.ls.tlv.route_extended_tag", FT_NONE,
BASE_NONE, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_ls_tlv_route_extended_tag_value,
{"Extended Route Tag", "bgp.ls.tlv.extended_route_tag_value", FT_UINT64,
BASE_HEX_DEC, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_ls_tlv_prefix_metric,
{ "Prefix Metric TLV", "bgp.ls.tlv.prefix_metric", FT_NONE,
BASE_NONE, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_ls_tlv_prefix_metric_value,
{ "Prefix Metric", "bgp.ls.tlv.prefix_metric_value", FT_UINT32,
BASE_HEX_DEC, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_ls_ospf_forwarding_address,
{ "OSPF Forwarding Address TLV", "bgp.ls.tlv.ospf_forwarding_address", FT_NONE,
BASE_NONE, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_ls_ospf_forwarding_address_ipv4_address,
{ "OSPF forwarding IPv4 address", "bgp.ls.tlv.ospf_forwarding_address_ipv4", FT_IPv4,
BASE_NONE, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_ls_ospf_forwarding_address_ipv6_address,
{ "OSPF forwarding IPv6 address", "bgp.ls.tlv.ospf_forwarding_address_ipv6", FT_IPv6,
BASE_NONE, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_ls_opaque_prefix_attribute,
{ "Opaque Prefix Attribute TLV", "bgp.ls.tlv.opaque_prefix_attribute", FT_NONE,
BASE_NONE, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_ls_opaque_prefix_attribute_value,
{ "Opaque prefix attributes", "bgp.ls.tlv.opaque_prefix_attribute_value", FT_NONE,
BASE_NONE, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_ls_tlv_igp_router,
{ "IGP Router-ID", "bgp.ls.tlv.igp_router", FT_NONE,
BASE_NONE, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_ls_tlv_igp_router_id,
{ "IGP ID", "bgp.ls.tlv.igp_router_id", FT_BYTES,
BASE_NONE, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_ls_tlv_node_flags_bits,
{ "Node Flags Bits TLV", "bgp.ls.tlv.node_flags_bits", FT_NONE,
BASE_NONE, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_ls_tlv_opaque_node_properties,
{ "Opaque Node Properties TLV", "bgp.ls.tlv.opaque_node_properties", FT_NONE,
BASE_NONE, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_ls_tlv_opaque_node_properties_value,
{ "Opaque Node Properties", "bgp.ls.tlv.opaque_node_properties_value", FT_NONE,
BASE_NONE, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_ls_tlv_node_name,
{ "Node Name TLV", "bgp.ls.tlv.node_name", FT_NONE,
BASE_NONE, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_ls_tlv_node_name_value,
{"Node name", "bgp.ls.tlv.node_name_value", FT_STRING,
STR_ASCII, NULL, 0, NULL, HFILL }},
{ &hf_bgp_ls_tlv_is_is_area_identifier,
{ "IS-IS Area Identifier TLV", "bgp.ls.tlv.is_is_area_identifier", FT_NONE,
BASE_NONE, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_ls_tlv_is_is_area_identifier_value,
{ "IS-IS Area Identifier", "bgp.ls.tlv.is_is_area_identifier_value", FT_BYTES,
BASE_NONE, NULL, 0x0, NULL, HFILL}},
/* Link Protection Types */
{ &hf_bgp_ls_link_protection_type_enhanced,
{ "Enhanced", "bgp.ls.link_protection_type.enhanced", FT_BOOLEAN, 8,
TFS(&tfs_capable_not_capable), 0x20, NULL, HFILL }},
{ &hf_bgp_ls_link_protection_type_dedicated_1plus1,
{ "Dedicated 1+1", "bgp.ls.link_protection_type.dedicated_1plus1", FT_BOOLEAN, 8,
TFS(&tfs_capable_not_capable), 0x10, NULL, HFILL }},
{ &hf_bgp_ls_link_protection_type_dedicated_1to1,
{ "Dedicated 1:1", "bgp.ls.link_protection_type.dedicated_1colon1", FT_BOOLEAN, 8,
TFS(&tfs_capable_not_capable), 0x08, NULL, HFILL }},
{ &hf_bgp_ls_link_protection_type_shared,
{ "Shared", "bgp.ls.link_protection_type.shared", FT_BOOLEAN, 8,
TFS(&tfs_capable_not_capable), 0x04, NULL, HFILL }},
{ &hf_bgp_ls_link_protection_type_unprotected,
{ "Unprotected", "bgp.ls.link_protection_type.unprotected", FT_BOOLEAN, 8,
TFS(&tfs_capable_not_capable), 0x02, NULL, HFILL }},
{ &hf_bgp_ls_link_protection_type_extra_traffic,
{ "Extra Traffic", "bgp.ls.link_protection_type.extra_traffic", FT_BOOLEAN, 8,
TFS(&tfs_capable_not_capable), 0x01, NULL, HFILL }},
/* MPLS Protocol Mask flags */
{ &hf_bgp_ls_mpls_protocol_mask_flag_l,
{ "Label Distribution Protocol (LDP)", "bgp.ls.protocol_mask_tlv.mpls_protocol.l", FT_BOOLEAN, 8,
TFS(&tfs_set_notset), 0x80, NULL, HFILL}},
{ &hf_bgp_ls_mpls_protocol_mask_flag_r,
{ "Extension to RSVP for LSP Tunnels (RSVP-TE)", "bgp.ls.protocol_mask_tlv.mpls_protocol.r", FT_BOOLEAN, 8,
TFS(&tfs_set_notset), 0x40, NULL, HFILL}},
/* IGP Flags TLV */
{ &hf_bgp_ls_igp_flags_flag_d,
{ "IS-IS Up/Down Bit", "bgp.ls.protocol_mask_tlv.igp_flags_flag_d.d", FT_BOOLEAN, 8,
TFS(&tfs_set_notset), 0x80, NULL, HFILL}},
/* Node Flag Bits TLV flags */
{ &hf_bgp_ls_node_flag_bits_overload,
{ "Overload Bit", "bgp.ls.node_flag_bits.overload", FT_BOOLEAN, 8,
TFS(&tfs_set_notset), 0x80, NULL, HFILL}},
{ &hf_bgp_ls_node_flag_bits_attached,
{ "Attached Bit", "bgp.ls.node_flag_bits.attached", FT_BOOLEAN, 8,
TFS(&tfs_set_notset), 0x40, NULL, HFILL}},
{ &hf_bgp_ls_node_flag_bits_external,
{ "External Bit", "bgp.ls.node_flag_bits.external", FT_BOOLEAN, 8,
TFS(&tfs_set_notset), 0x20, NULL, HFILL}},
{ &hf_bgp_ls_node_flag_bits_abr,
{ "ABR Bit", "bgp.ls.node_flag_bits.abr", FT_BOOLEAN, 8,
TFS(&tfs_set_notset), 0x10, NULL, HFILL}},
{ &hf_bgp_evpn_nlri,
{ "EVPN NLRI", "bgp.evpn.nlri", FT_NONE,
BASE_NONE, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_evpn_nlri_rt,
{ "AFI", "bgp.evpn.nlri.rt", FT_UINT8, BASE_DEC,
VALS(evpnrtypevals), 0x0, "EVPN Route Type", HFILL }},
{ &hf_bgp_evpn_nlri_len,
{ "Length", "bgp.evpn.nlri.len", FT_UINT8,
BASE_DEC, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_evpn_nlri_rd,
{ "Route Distinguisher", "bgp.evpn.nlri.rd", FT_BYTES,
BASE_NONE, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_evpn_nlri_esi,
{ "ESI", "bgp.evpn.nlri.esi", FT_NONE,
BASE_NONE, NULL, 0x0, NULL, HFILL }},
{ &hf_bgp_evpn_nlri_esi_type,
{ "ESI Type", "bgp.evpn.nlri.esi.type", FT_UINT8,
BASE_DEC, VALS(evpn_nlri_esi_type), 0x0, "EVPN ESI type", HFILL }},
{ &hf_bgp_evpn_nlri_esi_lacp_mac,
{ "CE LACP system MAC", "bgp.evpn.nlri.esi.lacp_mac", FT_ETHER,
BASE_NONE, NULL, 0x0, NULL, HFILL }},
{ &hf_bgp_evpn_nlri_esi_portk,
{ "LACP port key", "bgp.evpn.nlri.esi.lacp_portkey", FT_BYTES,
SEP_SPACE, NULL, 0x0, NULL, HFILL }},
{ &hf_bgp_evpn_nlri_esi_remain,
{ "Remaining bytes", "bgp.evpn.nlri.esi.remaining", FT_BYTES,
BASE_NONE, NULL, 0x0, NULL, HFILL }},
{ &hf_bgp_evpn_nlri_esi_reserved,
{ "Reserved value all 0xff", "bgp.evpn.nlri.esi.reserved", FT_BYTES,
BASE_NONE, NULL, 0x0, NULL, HFILL }},
{ &hf_bgp_evpn_nlri_esi_value,
{ "ESI 9 bytes value", "bgp.evpn.nlri.esi.arbitrary_bytes", FT_BYTES,
SEP_SPACE, NULL, 0x0, NULL, HFILL }},
{ &hf_bgp_evpn_nlri_esi_rb_mac,
{ "ESI root bridge MAC", "bgp.evpn.nlri.esi.root_brige", FT_ETHER,
BASE_NONE, NULL, 0x0, NULL, HFILL }},
{ &hf_bgp_evpn_nlri_esi_rbprio,
{ "ESI root bridge priority", "bgp.evpn.nlri.esi.rb_prio", FT_BYTES,
SEP_SPACE, NULL, 0x0, NULL, HFILL }},
{ &hf_bgp_evpn_nlri_esi_sys_mac,
{ "ESI system MAC", "bgp.evpn.nlri.esi.system_mac", FT_ETHER,
BASE_NONE, NULL, 0x0, NULL, HFILL }},
{ &hf_bgp_evpn_nlri_esi_mac_discr,
{ "ESI system mac discriminator", "bgp.evpn.nlri.esi.system_mac_discr", FT_BYTES,
SEP_SPACE, NULL, 0x0, NULL, HFILL }},
{ &hf_bgp_evpn_nlri_esi_router_id,
{ "ESI router ID", "bgp.evpn.nlri.esi.router_id", FT_IPv4,
BASE_NONE, NULL, 0x0, NULL, HFILL }},
{ &hf_bgp_evpn_nlri_esi_router_discr,
{ "ESI router discriminator", "bgp.evpn.nlri.esi.router_discr", FT_BYTES,
SEP_SPACE, NULL, 0x0, NULL, HFILL }},
{ &hf_bgp_evpn_nlri_esi_asn,
{ "ESI ASN", "bgp.evpn.nlri.esi.asn", FT_UINT32,
BASE_DEC, NULL, 0x0, NULL, HFILL }},
{ &hf_bgp_evpn_nlri_esi_asn_discr,
{ "ESI ASN discriminator", "bgp.evpn.nlri.esi.asn_discr", FT_BYTES,
SEP_SPACE, NULL, 0x0, NULL, HFILL }},
{ &hf_bgp_evpn_nlri_etag,
{ "Ethernet Tag ID", "bgp.evpn.nlri.etag", FT_UINT32,
BASE_DEC, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_evpn_nlri_mpls_ls,
{ "MPLS Label Stack", "bgp.evpn.nlri.mpls_ls", FT_STRING,
BASE_NONE, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_evpn_nlri_maclen,
{ "MAC Address Length", "bgp.evpn.nlri.maclen", FT_UINT8,
BASE_DEC, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_evpn_nlri_mac_addr,
{ "MAC Address", "bgp.evpn.nlri.mac_addr", FT_ETHER,
BASE_NONE, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_evpn_nlri_iplen,
{ "IP Address Length", "bgp.evpn.nlri.iplen", FT_UINT8,
BASE_DEC, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_evpn_nlri_prefix_len,
{ "IP prefix length", "bgp.evpn.nlri.prefix_len", FT_UINT8,
BASE_DEC, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_evpn_nlri_ip_addr,
{ "IPv4 address", "bgp.evpn.nlri.ip.addr", FT_IPv4,
BASE_NONE, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_evpn_nlri_ipv6_addr,
{ "IPv6 address", "bgp.evpn.nlri.ipv6.addr", FT_IPv6,
BASE_NONE, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_evpn_nlri_ipv4_gtw,
{ "IPv4 Gateway address", "bgp.evpn.nlri.ipv4.gtw_addr", FT_IPv4,
BASE_NONE, NULL, 0x0, NULL, HFILL}},
{ &hf_bgp_evpn_nlri_ipv6_gtw,
{ "IPv6 Gateway address", "bgp.evpn.nlri.ipv6.gtw_addr", FT_IPv6,
BASE_NONE, NULL, 0x0, NULL, HFILL}}
};
static gint *ett[] = {
&ett_bgp,
&ett_bgp_prefix,
&ett_bgp_unfeas,
&ett_bgp_attrs,
&ett_bgp_attr,
&ett_bgp_attr_flags,
&ett_bgp_mp_nhna,
&ett_bgp_mp_reach_nlri,
&ett_bgp_mp_unreach_nlri,
&ett_bgp_mp_snpa,
&ett_bgp_nlri,
&ett_bgp_open,
&ett_bgp_update,
&ett_bgp_notification,
&ett_bgp_route_refresh,
&ett_bgp_capability,
&ett_bgp_as_path_segment,
&ett_bgp_as_path_segment_asn,
&ett_bgp_communities,
&ett_bgp_community,
&ett_bgp_cluster_list,
&ett_bgp_options,
&ett_bgp_option,
&ett_bgp_cap,
&ett_bgp_extended_communities,
&ett_bgp_extended_community,
&ett_bgp_extended_com_fspec_redir,
&ett_bgp_ext_com_flags,
&ett_bgp_ext_com_l2_flags,
&ett_bgp_ssa,
&ett_bgp_ssa_subtree,
&ett_bgp_orf,
&ett_bgp_orf_entry,
&ett_bgp_mcast_vpn_nlri,
&ett_bgp_flow_spec_nlri,
&ett_bgp_flow_spec_nlri_filter,
&ett_bgp_flow_spec_nlri_op_flags,
&ett_bgp_flow_spec_nlri_tcp,
&ett_bgp_flow_spec_nlri_ff,
&ett_bgp_tunnel_tlv,
&ett_bgp_tunnel_tlv_subtree,
&ett_bgp_tunnel_subtlv,
&ett_bgp_tunnel_subtlv_subtree,
&ett_bgp_link_state,
&ett_bgp_evpn_nlri,
&ett_bgp_evpn_nlri_esi,
&ett_bgp_mpls_labels,
&ett_bgp_pmsi_tunnel_id,
&ett_bgp_aigp_attr,
};
static ei_register_info ei[] = {
{ &ei_bgp_cap_len_bad, { "bgp.cap.length.bad", PI_MALFORMED, PI_ERROR, "Capability length is wrong", EXPFILL }},
{ &ei_bgp_cap_gr_helper_mode_only, { "bgp.cap.gr.helper_mode_only", PI_REQUEST_CODE, PI_CHAT, "Graceful Restart Capability supported in Helper mode only", EXPFILL }},
{ &ei_bgp_notify_minor_unknown, { "bgp.notify.minor_error.unknown", PI_UNDECODED, PI_NOTE, "Unknown notification error", EXPFILL }},
{ &ei_bgp_route_refresh_orf_type_unknown, { "bgp.route_refresh.orf.type.unknown", PI_CHAT, PI_ERROR, "ORFEntry-Unknown", EXPFILL }},
{ &ei_bgp_length_invalid, { "bgp.length.invalid", PI_MALFORMED, PI_ERROR, "Length is invalid", EXPFILL }},
{ &ei_bgp_prefix_length_invalid, { "bgp.prefix_length.invalid", PI_MALFORMED, PI_ERROR, "Prefix length is invalid", EXPFILL }},
{ &ei_bgp_afi_type_not_supported, { "bgp.afi_type_not_supported", PI_PROTOCOL, PI_ERROR, "AFI Type not supported", EXPFILL }},
{ &ei_bgp_unknown_afi, { "bgp.unknown_afi", PI_PROTOCOL, PI_ERROR, "Unknown Address Family", EXPFILL }},
{ &ei_bgp_unknown_safi, { "bgp.unknown_safi", PI_PROTOCOL, PI_ERROR, "Unknown SAFI", EXPFILL }},
{ &ei_bgp_unknown_label_vpn, { "bgp.unknown_label", PI_PROTOCOL, PI_ERROR, "Unknown Label VPN", EXPFILL }},
{ &ei_bgp_ls_error, { "bgp.ls.error", PI_PROTOCOL, PI_ERROR, "Link State error", EXPFILL }},
{ &ei_bgp_ext_com_len_bad, { "bgp.ext_com.length.bad", PI_PROTOCOL, PI_ERROR, "Extended community length is wrong", EXPFILL }},
{ &ei_bgp_evpn_nlri_rt4_len_err, { "bgp.evpn.len", PI_MALFORMED, PI_ERROR, "Length is invalid", EXPFILL }},
{ &ei_bgp_evpn_nlri_rt_type_err, { "bgp.evpn.type", PI_MALFORMED, PI_ERROR, "EVPN Route Type is invalid", EXPFILL }},
{ &ei_bgp_evpn_nlri_esi_type_err, { "bgp.evpn.esi_type", PI_MALFORMED, PI_ERROR, "EVPN ESI Type is invalid", EXPFILL }},
{ &ei_bgp_evpn_nlri_rt4_no_ip, { "bgp.evpn.no_ip", PI_PROTOCOL, PI_NOTE, "IP Address: NOT INCLUDED", EXPFILL }},
{ &ei_bgp_attr_pmsi_tunnel_type, { "bgp.attr.pmsi.tunnel_type", PI_PROTOCOL, PI_ERROR, "Unknown Tunnel type", EXPFILL }},
{ &ei_bgp_attr_pmsi_opaque_type, { "bgp.attr.pmsi.opaque_type", PI_PROTOCOL, PI_ERROR, "Unvalid pmsi opaque type", EXPFILL }},
{ &ei_bgp_attr_aigp_type, {"bgp.attr.aigp.type", PI_MALFORMED, PI_NOTE, "Unknown AIGP attribute type", EXPFILL}},
{ &ei_bgp_prefix_length_err, { "bgp.prefix.length", PI_MALFORMED, PI_ERROR, "Unvalid IPv6 prefix length", EXPFILL}},
{ &ei_bgp_attr_as_path_as_len_err, {"bgp.attr.as_path.as_len", PI_UNDECODED, PI_ERROR, "unable to determine 4 or 2 bytes ASN", EXPFILL}}
};
module_t *bgp_module;
expert_module_t* expert_bgp;
static const enum_val_t asn_len[] = {
{"auto-detect", "Auto-detect", 0},
{"2", "2 octet", 2},
{"4", "4 octet", 4},
{NULL, NULL, -1}
};
proto_bgp = proto_register_protocol("Border Gateway Protocol",
"BGP", "bgp");
proto_register_field_array(proto_bgp, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
expert_bgp = expert_register_protocol(proto_bgp);
expert_register_field_array(expert_bgp, ei, array_length(ei));
bgp_module = prefs_register_protocol(proto_bgp, NULL);
prefs_register_bool_preference(bgp_module, "desegment",
"Reassemble BGP messages spanning multiple TCP segments",
"Whether the BGP dissector should reassemble messages spanning multiple TCP segments."
" To use this option, you must also enable \"Allow subdissectors to reassemble TCP streams\" in the TCP protocol settings.",
&bgp_desegment);
prefs_register_enum_preference(bgp_module, "asn_len",
"Length of the AS number",
"BGP dissector detect the length of the AS number in AS_PATH attributes automatically or manually (NOTE: Automatic detection is not 100% accurate)",
&bgp_asn_len, asn_len, FALSE);
register_dissector("bgp", dissect_bgp, proto_bgp);
}
void
proto_reg_handoff_bgp(void)
{
dissector_handle_t bgp_handle;
bgp_handle = create_dissector_handle(dissect_bgp, proto_bgp);
dissector_add_uint("tcp.port", BGP_TCP_PORT, bgp_handle);
}
/*
* Editor modelines - http://www.wireshark.org/tools/modelines.html
*
* Local variables:
* c-basic-offset: 4
* tab-width: 8
* indent-tabs-mode: nil
* End:
*
* ex: set shiftwidth=4 tabstop=8 expandtab:
* :indentSize=4:tabSize=8:noTabs=true:
*/
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