1078 lines
51 KiB
C
1078 lines
51 KiB
C
/*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that: (1) source code
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* distributions retain the above copyright notice and this paragraph
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* in its entirety, and (2) distributions including binary code include
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* the above copyright notice and this paragraph in its entirety in
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* the documentation or other materials provided with the distribution.
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND
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* WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT
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* LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE.
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*
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* Original code by Hannes Gredler (hannes@gredler.at)
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*/
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/* \summary: MPLS LSP PING printer */
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/* specification: RFC 4379 */
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include "netdissect-stdinc.h"
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#define ND_LONGJMP_FROM_TCHECK
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#include "netdissect.h"
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#include "extract.h"
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#include "addrtoname.h"
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#include "ntp.h"
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#include "l2vpn.h"
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#include "oui.h"
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/*
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* LSPPING common header
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*
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* 0 1 2 3
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* 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Version Number | Must Be Zero |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Message Type | Reply mode | Return Code | Return Subcode|
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Sender's Handle |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Sequence Number |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | TimeStamp Sent (seconds) |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | TimeStamp Sent (microseconds) |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | TimeStamp Received (seconds) |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | TimeStamp Received (microseconds) |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | TLVs ... |
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* . .
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* . .
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* . .
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*/
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struct lspping_common_header {
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nd_uint16_t version;
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nd_uint16_t global_flags;
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nd_uint8_t msg_type;
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nd_uint8_t reply_mode;
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nd_uint8_t return_code;
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nd_uint8_t return_subcode;
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nd_uint32_t sender_handle;
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nd_uint32_t seq_number;
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struct l_fixedpt ts_sent;
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struct l_fixedpt ts_rcvd;
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};
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#define LSPPING_VERSION 1
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static const struct tok lspping_msg_type_values[] = {
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{ 1, "MPLS Echo Request"},
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{ 2, "MPLS Echo Reply"},
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{ 0, NULL}
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};
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static const struct tok lspping_reply_mode_values[] = {
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{ 1, "Do not reply"},
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{ 2, "Reply via an IPv4/IPv6 UDP packet"},
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{ 3, "Reply via an IPv4/IPv6 UDP packet with Router Alert"},
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{ 4, "Reply via application level control channel"},
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{ 0, NULL}
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};
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static const struct tok lspping_return_code_values[] = {
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{ 0, "No return code or return code contained in the Error Code TLV"},
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{ 1, "Malformed echo request received"},
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{ 2, "One or more of the TLVs was not understood"},
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{ 3, "Replying router is an egress for the FEC at stack depth"},
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{ 4, "Replying router has no mapping for the FEC at stack depth"},
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{ 5, "Reserved"},
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{ 6, "Reserved"},
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{ 7, "Reserved"},
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{ 8, "Label switched at stack-depth"},
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{ 9, "Label switched but no MPLS forwarding at stack-depth"},
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{ 10, "Mapping for this FEC is not the given label at stack depth"},
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{ 11, "No label entry at stack-depth"},
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{ 12, "Protocol not associated with interface at FEC stack depth"},
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{ 13, "Premature termination of ping due to label stack shrinking to a single label"},
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{ 0, NULL},
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};
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/*
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* LSPPING TLV header
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* 0 1 2 3
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* 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Type | Length |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Value |
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* . .
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* . .
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* . .
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* | |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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*/
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struct lspping_tlv_header {
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nd_uint16_t type;
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nd_uint16_t length;
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};
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#define LSPPING_TLV_TARGET_FEC_STACK 1
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#define LSPPING_TLV_DOWNSTREAM_MAPPING 2
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#define LSPPING_TLV_PAD 3
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/* not assigned 4 */
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#define LSPPING_TLV_VENDOR_ENTERPRISE 5
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#define LSPPING_TLV_VENDOR_ENTERPRISE_LEN 4
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/* not assigned 6 */
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#define LSPPING_TLV_INTERFACE_LABEL_STACK 7
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/* not assigned 8 */
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#define LSPPING_TLV_ERROR_CODE 9
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#define LSPPING_TLV_REPLY_TOS_BYTE 10
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#define LSPPING_TLV_BFD_DISCRIMINATOR 15 /* draft-ietf-bfd-mpls-02 */
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#define LSPPING_TLV_BFD_DISCRIMINATOR_LEN 4
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#define LSPPING_TLV_VENDOR_PRIVATE 0xfc00
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static const struct tok lspping_tlv_values[] = {
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{ LSPPING_TLV_TARGET_FEC_STACK, "Target FEC Stack" },
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{ LSPPING_TLV_DOWNSTREAM_MAPPING, "Downstream Mapping" },
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{ LSPPING_TLV_PAD, "Pad" },
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{ LSPPING_TLV_ERROR_CODE, "Error Code" },
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{ LSPPING_TLV_VENDOR_ENTERPRISE, "Vendor Enterprise Code" },
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{ LSPPING_TLV_INTERFACE_LABEL_STACK, "Interface Label Stack" },
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{ LSPPING_TLV_REPLY_TOS_BYTE, "Reply TOS Byte" },
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{ LSPPING_TLV_BFD_DISCRIMINATOR, "BFD Discriminator" },
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{ LSPPING_TLV_VENDOR_PRIVATE, "Vendor Private Code" },
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{ 0, NULL}
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};
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#define LSPPING_TLV_TARGETFEC_SUBTLV_LDP_IPV4 1
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#define LSPPING_TLV_TARGETFEC_SUBTLV_LDP_IPV6 2
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#define LSPPING_TLV_TARGETFEC_SUBTLV_RSVP_IPV4 3
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#define LSPPING_TLV_TARGETFEC_SUBTLV_RSVP_IPV6 4
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/* not assigned 5 */
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#define LSPPING_TLV_TARGETFEC_SUBTLV_L3VPN_IPV4 6
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#define LSPPING_TLV_TARGETFEC_SUBTLV_L3VPN_IPV6 7
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#define LSPPING_TLV_TARGETFEC_SUBTLV_L2VPN_ENDPT 8
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#define LSPPING_TLV_TARGETFEC_SUBTLV_FEC_128_PW_OLD 9
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#define LSPPING_TLV_TARGETFEC_SUBTLV_FEC_128_PW 10
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#define LSPPING_TLV_TARGETFEC_SUBTLV_FEC_129_PW 11
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#define LSPPING_TLV_TARGETFEC_SUBTLV_BGP_IPV4 12
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#define LSPPING_TLV_TARGETFEC_SUBTLV_BGP_IPV6 13
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#define LSPPING_TLV_TARGETFEC_SUBTLV_GENERIC_IPV4 14
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#define LSPPING_TLV_TARGETFEC_SUBTLV_GENERIC_IPV6 15
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#define LSPPING_TLV_TARGETFEC_SUBTLV_NIL_FEC 16
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static const struct tok lspping_tlvtargetfec_subtlv_values[] = {
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{ LSPPING_TLV_TARGETFEC_SUBTLV_LDP_IPV4, "LDP IPv4 prefix"},
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{ LSPPING_TLV_TARGETFEC_SUBTLV_LDP_IPV6, "LDP IPv6 prefix"},
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{ LSPPING_TLV_TARGETFEC_SUBTLV_RSVP_IPV4, "RSVP IPv4 Session Query"},
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{ LSPPING_TLV_TARGETFEC_SUBTLV_RSVP_IPV6, "RSVP IPv6 Session Query"},
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{ 5, "Reserved"},
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{ LSPPING_TLV_TARGETFEC_SUBTLV_L3VPN_IPV4, "VPN IPv4 prefix"},
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{ LSPPING_TLV_TARGETFEC_SUBTLV_L3VPN_IPV6, "VPN IPv6 prefix"},
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{ LSPPING_TLV_TARGETFEC_SUBTLV_L2VPN_ENDPT, "L2 VPN endpoint"},
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{ LSPPING_TLV_TARGETFEC_SUBTLV_FEC_128_PW_OLD, "FEC 128 pseudowire (old)"},
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{ LSPPING_TLV_TARGETFEC_SUBTLV_FEC_128_PW, "FEC 128 pseudowire"},
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{ LSPPING_TLV_TARGETFEC_SUBTLV_BGP_IPV4, "BGP labeled IPv4 prefix"},
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{ LSPPING_TLV_TARGETFEC_SUBTLV_BGP_IPV6, "BGP labeled IPv6 prefix"},
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{ 0, NULL}
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};
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/*
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* 0 1 2 3
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* 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | IPv4 prefix |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Prefix Length | Must Be Zero |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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*/
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struct lspping_tlv_targetfec_subtlv_ldp_ipv4_t {
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nd_ipv4 prefix;
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nd_uint8_t prefix_len;
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};
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/*
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* 0 1 2 3
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* 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | IPv6 prefix |
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* | (16 octets) |
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* | |
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* | |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Prefix Length | Must Be Zero |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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*/
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struct lspping_tlv_targetfec_subtlv_ldp_ipv6_t {
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nd_ipv6 prefix;
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nd_uint8_t prefix_len;
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};
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/*
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* 0 1 2 3
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* 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | IPv4 tunnel end point address |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Must Be Zero | Tunnel ID |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Extended Tunnel ID |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | IPv4 tunnel sender address |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Must Be Zero | LSP ID |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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*/
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struct lspping_tlv_targetfec_subtlv_rsvp_ipv4_t {
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nd_ipv4 tunnel_endpoint;
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nd_byte res[2];
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nd_uint16_t tunnel_id;
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nd_ipv4 extended_tunnel_id;
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nd_ipv4 tunnel_sender;
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nd_byte res2[2];
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nd_uint16_t lsp_id;
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};
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/*
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* 0 1 2 3
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* 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | IPv6 tunnel end point address |
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* | |
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* | |
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* | |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Must Be Zero | Tunnel ID |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Extended Tunnel ID |
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* | |
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* | |
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* | |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | IPv6 tunnel sender address |
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* | |
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* | |
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* | |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Must Be Zero | LSP ID |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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*/
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struct lspping_tlv_targetfec_subtlv_rsvp_ipv6_t {
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nd_ipv6 tunnel_endpoint;
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nd_byte res[2];
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nd_uint16_t tunnel_id;
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nd_ipv6 extended_tunnel_id;
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nd_ipv6 tunnel_sender;
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nd_byte res2[2];
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nd_uint16_t lsp_id;
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};
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/*
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* 0 1 2 3
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* 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Route Distinguisher |
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* | (8 octets) |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | IPv4 prefix |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Prefix Length | Must Be Zero |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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*/
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struct lspping_tlv_targetfec_subtlv_l3vpn_ipv4_t {
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nd_byte rd[8];
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nd_ipv4 prefix;
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nd_uint8_t prefix_len;
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};
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/*
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* 0 1 2 3
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* 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Route Distinguisher |
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* | (8 octets) |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | IPv6 prefix |
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* | (16 octets) |
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* | |
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* | |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Prefix Length | Must Be Zero |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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*/
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struct lspping_tlv_targetfec_subtlv_l3vpn_ipv6_t {
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nd_byte rd[8];
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nd_ipv6 prefix;
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nd_uint8_t prefix_len;
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};
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/*
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* 0 1 2 3
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* 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Route Distinguisher |
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* | (8 octets) |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Sender's VE ID | Receiver's VE ID |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Encapsulation Type | Must Be Zero |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* 0 1 2 3
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*/
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struct lspping_tlv_targetfec_subtlv_l2vpn_endpt_t {
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nd_byte rd[8];
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nd_uint16_t sender_ve_id;
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nd_uint16_t receiver_ve_id;
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nd_uint16_t encapsulation;
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};
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/*
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* 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Remote PE Address |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | PW ID |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | PW Type | Must Be Zero |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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*/
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struct lspping_tlv_targetfec_subtlv_fec_128_pw_old {
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nd_ipv4 remote_pe_address;
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nd_uint32_t pw_id;
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nd_uint16_t pw_type;
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};
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/*
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* 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Sender's PE Address |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Remote PE Address |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | PW ID |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | PW Type | Must Be Zero |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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*/
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struct lspping_tlv_targetfec_subtlv_fec_128_pw {
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nd_ipv4 sender_pe_address;
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nd_ipv4 remote_pe_address;
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nd_uint32_t pw_id;
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nd_uint16_t pw_type;
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};
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/*
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* 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | IPv4 prefix |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Prefix Length | Must Be Zero |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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*/
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struct lspping_tlv_targetfec_subtlv_bgp_ipv4_t {
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nd_ipv4 prefix;
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nd_uint8_t prefix_len;
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};
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/*
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* 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | IPv6 prefix |
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* | (16 octets) |
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* | |
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* | |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Prefix Length | Must Be Zero |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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*/
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struct lspping_tlv_targetfec_subtlv_bgp_ipv6_t {
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nd_ipv6 prefix;
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nd_uint8_t prefix_len;
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};
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|
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/*
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* 0 1 2 3
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* 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | MTU | Address Type | Resvd (SBZ) |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Downstream IP Address (4 or 16 octets) |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Downstream Interface Address (4 or 16 octets) |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Multipath Type| Depth Limit | Multipath Length |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* . .
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* . (Multipath Information) .
|
|
* . .
|
|
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
* | Downstream Label | Protocol |
|
|
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
* . .
|
|
* . .
|
|
* . .
|
|
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
* | Downstream Label | Protocol |
|
|
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
*/
|
|
/* Enough to get the address type */
|
|
struct lspping_tlv_downstream_map_t {
|
|
nd_uint16_t mtu;
|
|
nd_uint8_t address_type;
|
|
nd_uint8_t ds_flags;
|
|
};
|
|
|
|
struct lspping_tlv_downstream_map_ipv4_t {
|
|
nd_uint16_t mtu;
|
|
nd_uint8_t address_type;
|
|
nd_uint8_t ds_flags;
|
|
nd_ipv4 downstream_ip;
|
|
nd_ipv4 downstream_interface;
|
|
};
|
|
|
|
struct lspping_tlv_downstream_map_ipv4_unmb_t {
|
|
nd_uint16_t mtu;
|
|
nd_uint8_t address_type;
|
|
nd_uint8_t ds_flags;
|
|
nd_ipv4 downstream_ip;
|
|
nd_uint32_t downstream_interface;
|
|
};
|
|
|
|
struct lspping_tlv_downstream_map_ipv6_t {
|
|
nd_uint16_t mtu;
|
|
nd_uint8_t address_type;
|
|
nd_uint8_t ds_flags;
|
|
nd_ipv6 downstream_ip;
|
|
nd_ipv6 downstream_interface;
|
|
};
|
|
|
|
struct lspping_tlv_downstream_map_ipv6_unmb_t {
|
|
nd_uint16_t mtu;
|
|
nd_uint8_t address_type;
|
|
nd_uint8_t ds_flags;
|
|
nd_ipv6 downstream_ip;
|
|
nd_uint32_t downstream_interface;
|
|
};
|
|
|
|
struct lspping_tlv_downstream_map_info_t {
|
|
nd_uint8_t multipath_type;
|
|
nd_uint8_t depth_limit;
|
|
nd_uint16_t multipath_length;
|
|
};
|
|
|
|
#define LSPPING_AFI_IPV4 1
|
|
#define LSPPING_AFI_IPV4_UNMB 2
|
|
#define LSPPING_AFI_IPV6 3
|
|
#define LSPPING_AFI_IPV6_UNMB 4
|
|
|
|
static const struct tok lspping_tlv_downstream_addr_values[] = {
|
|
{ LSPPING_AFI_IPV4, "IPv4"},
|
|
{ LSPPING_AFI_IPV4_UNMB, "Unnumbered IPv4"},
|
|
{ LSPPING_AFI_IPV6, "IPv6"},
|
|
{ LSPPING_AFI_IPV6_UNMB, "IPv6"},
|
|
{ 0, NULL}
|
|
};
|
|
|
|
void
|
|
lspping_print(netdissect_options *ndo,
|
|
const u_char *pptr, u_int len)
|
|
{
|
|
const struct lspping_common_header *lspping_com_header;
|
|
const struct lspping_tlv_header *lspping_tlv_header;
|
|
const struct lspping_tlv_header *lspping_subtlv_header;
|
|
const u_char *tptr,*tlv_tptr,*subtlv_tptr;
|
|
u_int return_code, return_subcode;
|
|
u_int tlen,lspping_tlv_len,lspping_tlv_type,tlv_tlen;
|
|
int tlv_hexdump,subtlv_hexdump;
|
|
u_int lspping_subtlv_len,lspping_subtlv_type;
|
|
uint32_t int_part, fraction;
|
|
u_int address_type;
|
|
|
|
union {
|
|
const struct lspping_tlv_downstream_map_t *lspping_tlv_downstream_map;
|
|
const struct lspping_tlv_downstream_map_ipv4_t *lspping_tlv_downstream_map_ipv4;
|
|
const struct lspping_tlv_downstream_map_ipv4_unmb_t *lspping_tlv_downstream_map_ipv4_unmb;
|
|
const struct lspping_tlv_downstream_map_ipv6_t *lspping_tlv_downstream_map_ipv6;
|
|
const struct lspping_tlv_downstream_map_ipv6_unmb_t *lspping_tlv_downstream_map_ipv6_unmb;
|
|
const struct lspping_tlv_downstream_map_info_t *lspping_tlv_downstream_map_info;
|
|
} tlv_ptr;
|
|
|
|
union {
|
|
const struct lspping_tlv_targetfec_subtlv_ldp_ipv4_t *lspping_tlv_targetfec_subtlv_ldp_ipv4;
|
|
const struct lspping_tlv_targetfec_subtlv_ldp_ipv6_t *lspping_tlv_targetfec_subtlv_ldp_ipv6;
|
|
const struct lspping_tlv_targetfec_subtlv_rsvp_ipv4_t *lspping_tlv_targetfec_subtlv_rsvp_ipv4;
|
|
const struct lspping_tlv_targetfec_subtlv_rsvp_ipv6_t *lspping_tlv_targetfec_subtlv_rsvp_ipv6;
|
|
const struct lspping_tlv_targetfec_subtlv_l3vpn_ipv4_t *lspping_tlv_targetfec_subtlv_l3vpn_ipv4;
|
|
const struct lspping_tlv_targetfec_subtlv_l3vpn_ipv6_t *lspping_tlv_targetfec_subtlv_l3vpn_ipv6;
|
|
const struct lspping_tlv_targetfec_subtlv_l2vpn_endpt_t *lspping_tlv_targetfec_subtlv_l2vpn_endpt;
|
|
const struct lspping_tlv_targetfec_subtlv_fec_128_pw_old *lspping_tlv_targetfec_subtlv_l2vpn_vcid_old;
|
|
const struct lspping_tlv_targetfec_subtlv_fec_128_pw *lspping_tlv_targetfec_subtlv_l2vpn_vcid;
|
|
const struct lspping_tlv_targetfec_subtlv_bgp_ipv4_t *lspping_tlv_targetfec_subtlv_bgp_ipv4;
|
|
const struct lspping_tlv_targetfec_subtlv_bgp_ipv6_t *lspping_tlv_targetfec_subtlv_bgp_ipv6;
|
|
} subtlv_ptr;
|
|
|
|
ndo->ndo_protocol = "lspping";
|
|
tptr=pptr;
|
|
lspping_com_header = (const struct lspping_common_header *)pptr;
|
|
if (len < sizeof(struct lspping_common_header))
|
|
goto tooshort;
|
|
ND_TCHECK_SIZE(lspping_com_header);
|
|
|
|
/*
|
|
* Sanity checking of the header.
|
|
*/
|
|
if (GET_BE_U_2(lspping_com_header->version) != LSPPING_VERSION) {
|
|
ND_PRINT("LSP-PING version %u packet not supported",
|
|
GET_BE_U_2(lspping_com_header->version));
|
|
return;
|
|
}
|
|
|
|
/* in non-verbose mode just lets print the basic Message Type*/
|
|
if (ndo->ndo_vflag < 1) {
|
|
ND_PRINT("LSP-PINGv%u, %s, seq %u, length: %u",
|
|
GET_BE_U_2(lspping_com_header->version),
|
|
tok2str(lspping_msg_type_values, "unknown (%u)",GET_U_1(lspping_com_header->msg_type)),
|
|
GET_BE_U_4(lspping_com_header->seq_number),
|
|
len);
|
|
return;
|
|
}
|
|
|
|
/* ok they seem to want to know everything - lets fully decode it */
|
|
|
|
tlen=len;
|
|
|
|
ND_PRINT("\n\tLSP-PINGv%u, msg-type: %s (%u), length: %u\n\t reply-mode: %s (%u)",
|
|
GET_BE_U_2(lspping_com_header->version),
|
|
tok2str(lspping_msg_type_values, "unknown",GET_U_1(lspping_com_header->msg_type)),
|
|
GET_U_1(lspping_com_header->msg_type),
|
|
len,
|
|
tok2str(lspping_reply_mode_values, "unknown",GET_U_1(lspping_com_header->reply_mode)),
|
|
GET_U_1(lspping_com_header->reply_mode));
|
|
|
|
/*
|
|
* the following return codes require that the subcode is attached
|
|
* at the end of the translated token output
|
|
*/
|
|
return_code = GET_U_1(lspping_com_header->return_code);
|
|
return_subcode = GET_U_1(lspping_com_header->return_subcode);
|
|
if (return_code == 3 ||
|
|
return_code == 4 ||
|
|
return_code == 8 ||
|
|
return_code == 10 ||
|
|
return_code == 11 ||
|
|
return_code == 12 )
|
|
ND_PRINT("\n\t Return Code: %s %u (%u)\n\t Return Subcode: (%u)",
|
|
tok2str(lspping_return_code_values, "unknown",return_code),
|
|
return_subcode,
|
|
return_code,
|
|
return_subcode);
|
|
else
|
|
ND_PRINT("\n\t Return Code: %s (%u)\n\t Return Subcode: (%u)",
|
|
tok2str(lspping_return_code_values, "unknown",return_code),
|
|
return_code,
|
|
return_subcode);
|
|
|
|
ND_PRINT("\n\t Sender Handle: 0x%08x, Sequence: %u",
|
|
GET_BE_U_4(lspping_com_header->sender_handle),
|
|
GET_BE_U_4(lspping_com_header->seq_number));
|
|
|
|
ND_PRINT("\n\t Sender Timestamp: ");
|
|
p_ntp_time(ndo, &lspping_com_header->ts_sent);
|
|
ND_PRINT(" ");
|
|
|
|
int_part=GET_BE_U_4(lspping_com_header->ts_rcvd.int_part);
|
|
fraction=GET_BE_U_4(lspping_com_header->ts_rcvd.fraction);
|
|
ND_PRINT("Receiver Timestamp: ");
|
|
if (! (int_part == 0 && fraction == 0))
|
|
p_ntp_time(ndo, &lspping_com_header->ts_rcvd);
|
|
else
|
|
ND_PRINT("no timestamp");
|
|
|
|
tptr+=sizeof(struct lspping_common_header);
|
|
tlen-=sizeof(struct lspping_common_header);
|
|
|
|
while (tlen != 0) {
|
|
/* Does the TLV go past the end of the packet? */
|
|
if (tlen < sizeof(struct lspping_tlv_header))
|
|
goto tooshort;
|
|
|
|
lspping_tlv_header = (const struct lspping_tlv_header *)tptr;
|
|
lspping_tlv_type=GET_BE_U_2(lspping_tlv_header->type);
|
|
lspping_tlv_len=GET_BE_U_2(lspping_tlv_header->length);
|
|
|
|
ND_PRINT("\n\t %s TLV (%u), length: %u",
|
|
tok2str(lspping_tlv_values,
|
|
"Unknown",
|
|
lspping_tlv_type),
|
|
lspping_tlv_type,
|
|
lspping_tlv_len);
|
|
|
|
/* some little sanity checking */
|
|
if (lspping_tlv_len == 0) {
|
|
tptr+=sizeof(struct lspping_tlv_header);
|
|
tlen-=sizeof(struct lspping_tlv_header);
|
|
continue; /* no value to dissect */
|
|
}
|
|
|
|
tlv_tptr=tptr+sizeof(struct lspping_tlv_header);
|
|
tlv_tlen=lspping_tlv_len; /* header not included -> no adjustment */
|
|
|
|
/* Does the TLV go past the end of the packet? */
|
|
if (tlen < lspping_tlv_len+sizeof(struct lspping_tlv_header))
|
|
goto tooshort;
|
|
/* did we capture enough for fully decoding the tlv ? */
|
|
ND_TCHECK_LEN(tlv_tptr, lspping_tlv_len);
|
|
tlv_hexdump=FALSE;
|
|
|
|
switch(lspping_tlv_type) {
|
|
case LSPPING_TLV_TARGET_FEC_STACK:
|
|
while (tlv_tlen != 0) {
|
|
/* Does the subTLV header go past the end of the TLV? */
|
|
if (tlv_tlen < sizeof(struct lspping_tlv_header)) {
|
|
ND_PRINT("\n\t TLV is too short");
|
|
tlv_hexdump = TRUE;
|
|
goto tlv_tooshort;
|
|
}
|
|
subtlv_hexdump=FALSE;
|
|
|
|
lspping_subtlv_header = (const struct lspping_tlv_header *)tlv_tptr;
|
|
lspping_subtlv_type=GET_BE_U_2(lspping_subtlv_header->type);
|
|
lspping_subtlv_len=GET_BE_U_2(lspping_subtlv_header->length);
|
|
subtlv_tptr=tlv_tptr+sizeof(struct lspping_tlv_header);
|
|
|
|
/* Does the subTLV go past the end of the TLV? */
|
|
if (tlv_tlen < lspping_subtlv_len+sizeof(struct lspping_tlv_header)) {
|
|
ND_PRINT("\n\t TLV is too short");
|
|
tlv_hexdump = TRUE;
|
|
goto tlv_tooshort;
|
|
}
|
|
|
|
/* Did we capture enough for fully decoding the subTLV? */
|
|
ND_TCHECK_LEN(subtlv_tptr, lspping_subtlv_len);
|
|
|
|
ND_PRINT("\n\t %s subTLV (%u), length: %u",
|
|
tok2str(lspping_tlvtargetfec_subtlv_values,
|
|
"Unknown",
|
|
lspping_subtlv_type),
|
|
lspping_subtlv_type,
|
|
lspping_subtlv_len);
|
|
|
|
switch(lspping_subtlv_type) {
|
|
|
|
case LSPPING_TLV_TARGETFEC_SUBTLV_LDP_IPV4:
|
|
/* Is the subTLV length correct? */
|
|
if (lspping_subtlv_len != 5) {
|
|
ND_PRINT("\n\t invalid subTLV length, should be 5");
|
|
subtlv_hexdump=TRUE; /* unknown subTLV just hexdump it */
|
|
} else {
|
|
subtlv_ptr.lspping_tlv_targetfec_subtlv_ldp_ipv4 =
|
|
(const struct lspping_tlv_targetfec_subtlv_ldp_ipv4_t *)subtlv_tptr;
|
|
ND_PRINT("\n\t %s/%u",
|
|
GET_IPADDR_STRING(subtlv_ptr.lspping_tlv_targetfec_subtlv_ldp_ipv4->prefix),
|
|
GET_U_1(subtlv_ptr.lspping_tlv_targetfec_subtlv_ldp_ipv4->prefix_len));
|
|
}
|
|
break;
|
|
|
|
case LSPPING_TLV_TARGETFEC_SUBTLV_LDP_IPV6:
|
|
/* Is the subTLV length correct? */
|
|
if (lspping_subtlv_len != 17) {
|
|
ND_PRINT("\n\t invalid subTLV length, should be 17");
|
|
subtlv_hexdump=TRUE; /* unknown subTLV just hexdump it */
|
|
} else {
|
|
subtlv_ptr.lspping_tlv_targetfec_subtlv_ldp_ipv6 =
|
|
(const struct lspping_tlv_targetfec_subtlv_ldp_ipv6_t *)subtlv_tptr;
|
|
ND_PRINT("\n\t %s/%u",
|
|
GET_IP6ADDR_STRING(subtlv_ptr.lspping_tlv_targetfec_subtlv_ldp_ipv6->prefix),
|
|
GET_U_1(subtlv_ptr.lspping_tlv_targetfec_subtlv_ldp_ipv6->prefix_len));
|
|
}
|
|
break;
|
|
|
|
case LSPPING_TLV_TARGETFEC_SUBTLV_BGP_IPV4:
|
|
/* Is the subTLV length correct? */
|
|
if (lspping_subtlv_len != 5) {
|
|
ND_PRINT("\n\t invalid subTLV length, should be 5");
|
|
subtlv_hexdump=TRUE; /* unknown subTLV just hexdump it */
|
|
} else {
|
|
subtlv_ptr.lspping_tlv_targetfec_subtlv_bgp_ipv4 =
|
|
(const struct lspping_tlv_targetfec_subtlv_bgp_ipv4_t *)subtlv_tptr;
|
|
ND_PRINT("\n\t %s/%u",
|
|
GET_IPADDR_STRING(subtlv_ptr.lspping_tlv_targetfec_subtlv_bgp_ipv4->prefix),
|
|
GET_U_1(subtlv_ptr.lspping_tlv_targetfec_subtlv_bgp_ipv4->prefix_len));
|
|
}
|
|
break;
|
|
|
|
case LSPPING_TLV_TARGETFEC_SUBTLV_BGP_IPV6:
|
|
/* Is the subTLV length correct? */
|
|
if (lspping_subtlv_len != 17) {
|
|
ND_PRINT("\n\t invalid subTLV length, should be 17");
|
|
subtlv_hexdump=TRUE; /* unknown subTLV just hexdump it */
|
|
} else {
|
|
subtlv_ptr.lspping_tlv_targetfec_subtlv_bgp_ipv6 =
|
|
(const struct lspping_tlv_targetfec_subtlv_bgp_ipv6_t *)subtlv_tptr;
|
|
ND_PRINT("\n\t %s/%u",
|
|
GET_IP6ADDR_STRING(subtlv_ptr.lspping_tlv_targetfec_subtlv_bgp_ipv6->prefix),
|
|
GET_U_1(subtlv_ptr.lspping_tlv_targetfec_subtlv_bgp_ipv6->prefix_len));
|
|
}
|
|
break;
|
|
|
|
case LSPPING_TLV_TARGETFEC_SUBTLV_RSVP_IPV4:
|
|
/* Is the subTLV length correct? */
|
|
if (lspping_subtlv_len != 20) {
|
|
ND_PRINT("\n\t invalid subTLV length, should be 20");
|
|
subtlv_hexdump=TRUE; /* unknown subTLV just hexdump it */
|
|
} else {
|
|
subtlv_ptr.lspping_tlv_targetfec_subtlv_rsvp_ipv4 =
|
|
(const struct lspping_tlv_targetfec_subtlv_rsvp_ipv4_t *)subtlv_tptr;
|
|
ND_PRINT("\n\t tunnel end-point %s, tunnel sender %s, lsp-id 0x%04x"
|
|
"\n\t tunnel-id 0x%04x, extended tunnel-id %s",
|
|
GET_IPADDR_STRING(subtlv_ptr.lspping_tlv_targetfec_subtlv_rsvp_ipv4->tunnel_endpoint),
|
|
GET_IPADDR_STRING(subtlv_ptr.lspping_tlv_targetfec_subtlv_rsvp_ipv4->tunnel_sender),
|
|
GET_BE_U_2(subtlv_ptr.lspping_tlv_targetfec_subtlv_rsvp_ipv4->lsp_id),
|
|
GET_BE_U_2(subtlv_ptr.lspping_tlv_targetfec_subtlv_rsvp_ipv4->tunnel_id),
|
|
GET_IPADDR_STRING(subtlv_ptr.lspping_tlv_targetfec_subtlv_rsvp_ipv4->extended_tunnel_id));
|
|
}
|
|
break;
|
|
|
|
case LSPPING_TLV_TARGETFEC_SUBTLV_RSVP_IPV6:
|
|
/* Is the subTLV length correct? */
|
|
if (lspping_subtlv_len != 56) {
|
|
ND_PRINT("\n\t invalid subTLV length, should be 56");
|
|
subtlv_hexdump=TRUE; /* unknown subTLV just hexdump it */
|
|
} else {
|
|
subtlv_ptr.lspping_tlv_targetfec_subtlv_rsvp_ipv6 =
|
|
(const struct lspping_tlv_targetfec_subtlv_rsvp_ipv6_t *)subtlv_tptr;
|
|
ND_PRINT("\n\t tunnel end-point %s, tunnel sender %s, lsp-id 0x%04x"
|
|
"\n\t tunnel-id 0x%04x, extended tunnel-id %s",
|
|
GET_IP6ADDR_STRING(subtlv_ptr.lspping_tlv_targetfec_subtlv_rsvp_ipv6->tunnel_endpoint),
|
|
GET_IP6ADDR_STRING(subtlv_ptr.lspping_tlv_targetfec_subtlv_rsvp_ipv6->tunnel_sender),
|
|
GET_BE_U_2(subtlv_ptr.lspping_tlv_targetfec_subtlv_rsvp_ipv6->lsp_id),
|
|
GET_BE_U_2(subtlv_ptr.lspping_tlv_targetfec_subtlv_rsvp_ipv6->tunnel_id),
|
|
GET_IP6ADDR_STRING(subtlv_ptr.lspping_tlv_targetfec_subtlv_rsvp_ipv6->extended_tunnel_id));
|
|
}
|
|
break;
|
|
|
|
case LSPPING_TLV_TARGETFEC_SUBTLV_L3VPN_IPV4:
|
|
/* Is the subTLV length correct? */
|
|
if (lspping_subtlv_len != 13) {
|
|
ND_PRINT("\n\t invalid subTLV length, should be 13");
|
|
subtlv_hexdump=TRUE; /* unknown subTLV just hexdump it */
|
|
} else {
|
|
subtlv_ptr.lspping_tlv_targetfec_subtlv_l3vpn_ipv4 =
|
|
(const struct lspping_tlv_targetfec_subtlv_l3vpn_ipv4_t *)subtlv_tptr;
|
|
ND_PRINT("\n\t RD: %s, %s/%u",
|
|
bgp_vpn_rd_print(ndo, subtlv_ptr.lspping_tlv_targetfec_subtlv_l3vpn_ipv4->rd),
|
|
GET_IPADDR_STRING(subtlv_ptr.lspping_tlv_targetfec_subtlv_l3vpn_ipv4->prefix),
|
|
GET_U_1(subtlv_ptr.lspping_tlv_targetfec_subtlv_l3vpn_ipv4->prefix_len));
|
|
}
|
|
break;
|
|
|
|
case LSPPING_TLV_TARGETFEC_SUBTLV_L3VPN_IPV6:
|
|
/* Is the subTLV length correct? */
|
|
if (lspping_subtlv_len != 25) {
|
|
ND_PRINT("\n\t invalid subTLV length, should be 25");
|
|
subtlv_hexdump=TRUE; /* unknown subTLV just hexdump it */
|
|
} else {
|
|
subtlv_ptr.lspping_tlv_targetfec_subtlv_l3vpn_ipv6 =
|
|
(const struct lspping_tlv_targetfec_subtlv_l3vpn_ipv6_t *)subtlv_tptr;
|
|
ND_PRINT("\n\t RD: %s, %s/%u",
|
|
bgp_vpn_rd_print(ndo, subtlv_ptr.lspping_tlv_targetfec_subtlv_l3vpn_ipv6->rd),
|
|
GET_IP6ADDR_STRING(subtlv_ptr.lspping_tlv_targetfec_subtlv_l3vpn_ipv6->prefix),
|
|
GET_U_1(subtlv_ptr.lspping_tlv_targetfec_subtlv_l3vpn_ipv6->prefix_len));
|
|
}
|
|
break;
|
|
|
|
case LSPPING_TLV_TARGETFEC_SUBTLV_L2VPN_ENDPT:
|
|
/* Is the subTLV length correct? */
|
|
if (lspping_subtlv_len != 14) {
|
|
ND_PRINT("\n\t invalid subTLV length, should be 14");
|
|
subtlv_hexdump=TRUE; /* unknown subTLV just hexdump it */
|
|
} else {
|
|
subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_endpt =
|
|
(const struct lspping_tlv_targetfec_subtlv_l2vpn_endpt_t *)subtlv_tptr;
|
|
ND_PRINT("\n\t RD: %s, Sender VE ID: %u, Receiver VE ID: %u"
|
|
"\n\t Encapsulation Type: %s (%u)",
|
|
bgp_vpn_rd_print(ndo, subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_endpt->rd),
|
|
GET_BE_U_2(subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_endpt->sender_ve_id),
|
|
GET_BE_U_2(subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_endpt->receiver_ve_id),
|
|
tok2str(mpls_pw_types_values,
|
|
"unknown",
|
|
GET_BE_U_2(subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_endpt->encapsulation)),
|
|
GET_BE_U_2(subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_endpt->encapsulation));
|
|
}
|
|
break;
|
|
|
|
/* the old L2VPN VCID subTLV does not have support for the sender field */
|
|
case LSPPING_TLV_TARGETFEC_SUBTLV_FEC_128_PW_OLD:
|
|
/* Is the subTLV length correct? */
|
|
if (lspping_subtlv_len != 10) {
|
|
ND_PRINT("\n\t invalid subTLV length, should be 10");
|
|
subtlv_hexdump=TRUE; /* unknown subTLV just hexdump it */
|
|
} else {
|
|
subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_vcid_old =
|
|
(const struct lspping_tlv_targetfec_subtlv_fec_128_pw_old *)subtlv_tptr;
|
|
ND_PRINT("\n\t Remote PE: %s"
|
|
"\n\t PW ID: 0x%08x, PW Type: %s (%u)",
|
|
GET_IPADDR_STRING(subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_vcid_old->remote_pe_address),
|
|
GET_BE_U_4(subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_vcid_old->pw_id),
|
|
tok2str(mpls_pw_types_values,
|
|
"unknown",
|
|
GET_BE_U_2(subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_vcid_old->pw_type)),
|
|
GET_BE_U_2(subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_vcid_old->pw_type));
|
|
}
|
|
break;
|
|
|
|
case LSPPING_TLV_TARGETFEC_SUBTLV_FEC_128_PW:
|
|
/* Is the subTLV length correct? */
|
|
if (lspping_subtlv_len != 14) {
|
|
ND_PRINT("\n\t invalid subTLV length, should be 14");
|
|
subtlv_hexdump=TRUE; /* unknown subTLV just hexdump it */
|
|
} else {
|
|
subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_vcid =
|
|
(const struct lspping_tlv_targetfec_subtlv_fec_128_pw *)subtlv_tptr;
|
|
ND_PRINT("\n\t Sender PE: %s, Remote PE: %s"
|
|
"\n\t PW ID: 0x%08x, PW Type: %s (%u)",
|
|
GET_IPADDR_STRING(subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_vcid->sender_pe_address),
|
|
GET_IPADDR_STRING(subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_vcid->remote_pe_address),
|
|
GET_BE_U_4(subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_vcid->pw_id),
|
|
tok2str(mpls_pw_types_values,
|
|
"unknown",
|
|
GET_BE_U_2(subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_vcid->pw_type)),
|
|
GET_BE_U_2(subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_vcid->pw_type));
|
|
}
|
|
break;
|
|
|
|
default:
|
|
subtlv_hexdump=TRUE; /* unknown subTLV just hexdump it */
|
|
break;
|
|
}
|
|
/* do we want to see an additionally subtlv hexdump ? */
|
|
if (ndo->ndo_vflag > 1 || subtlv_hexdump==TRUE)
|
|
print_unknown_data(ndo, tlv_tptr+sizeof(struct lspping_tlv_header),
|
|
"\n\t ",
|
|
lspping_subtlv_len);
|
|
|
|
/* All subTLVs are aligned to four octet boundary */
|
|
if (lspping_subtlv_len % 4) {
|
|
lspping_subtlv_len += 4 - (lspping_subtlv_len % 4);
|
|
/* Does the subTLV, including padding, go past the end of the TLV? */
|
|
if (tlv_tlen < lspping_subtlv_len+sizeof(struct lspping_tlv_header)) {
|
|
ND_PRINT("\n\t\t TLV is too short");
|
|
return;
|
|
}
|
|
}
|
|
tlv_tptr+=lspping_subtlv_len;
|
|
tlv_tlen-=lspping_subtlv_len+sizeof(struct lspping_tlv_header);
|
|
}
|
|
break;
|
|
|
|
case LSPPING_TLV_DOWNSTREAM_MAPPING:
|
|
/* Does the header go past the end of the TLV? */
|
|
if (tlv_tlen < sizeof(struct lspping_tlv_downstream_map_t)) {
|
|
ND_PRINT("\n\t TLV is too short");
|
|
tlv_hexdump = TRUE;
|
|
goto tlv_tooshort;
|
|
}
|
|
/* Did we capture enough to get the address family? */
|
|
ND_TCHECK_LEN(tlv_tptr,
|
|
sizeof(struct lspping_tlv_downstream_map_t));
|
|
|
|
tlv_ptr.lspping_tlv_downstream_map=
|
|
(const struct lspping_tlv_downstream_map_t *)tlv_tptr;
|
|
|
|
/* that strange thing with the downstream map TLV is that until now
|
|
* we do not know if its IPv4 or IPv6 or is unnumbered; after
|
|
* we find the address-type, we recast the tlv_tptr and move on. */
|
|
|
|
address_type = GET_U_1(tlv_ptr.lspping_tlv_downstream_map->address_type);
|
|
ND_PRINT("\n\t MTU: %u, Address-Type: %s (%u)",
|
|
GET_BE_U_2(tlv_ptr.lspping_tlv_downstream_map->mtu),
|
|
tok2str(lspping_tlv_downstream_addr_values,
|
|
"unknown",
|
|
address_type),
|
|
address_type);
|
|
|
|
switch(address_type) {
|
|
|
|
case LSPPING_AFI_IPV4:
|
|
/* Does the data go past the end of the TLV? */
|
|
if (tlv_tlen < sizeof(struct lspping_tlv_downstream_map_ipv4_t)) {
|
|
ND_PRINT("\n\t TLV is too short");
|
|
tlv_hexdump = TRUE;
|
|
goto tlv_tooshort;
|
|
}
|
|
/* Did we capture enough for this part of the TLV? */
|
|
ND_TCHECK_LEN(tlv_tptr,
|
|
sizeof(struct lspping_tlv_downstream_map_ipv4_t));
|
|
|
|
tlv_ptr.lspping_tlv_downstream_map_ipv4=
|
|
(const struct lspping_tlv_downstream_map_ipv4_t *)tlv_tptr;
|
|
ND_PRINT("\n\t Downstream IP: %s"
|
|
"\n\t Downstream Interface IP: %s",
|
|
GET_IPADDR_STRING(tlv_ptr.lspping_tlv_downstream_map_ipv4->downstream_ip),
|
|
GET_IPADDR_STRING(tlv_ptr.lspping_tlv_downstream_map_ipv4->downstream_interface));
|
|
tlv_tptr+=sizeof(struct lspping_tlv_downstream_map_ipv4_t);
|
|
tlv_tlen-=sizeof(struct lspping_tlv_downstream_map_ipv4_t);
|
|
break;
|
|
case LSPPING_AFI_IPV4_UNMB:
|
|
/* Does the data go past the end of the TLV? */
|
|
if (tlv_tlen < sizeof(struct lspping_tlv_downstream_map_ipv4_unmb_t)) {
|
|
ND_PRINT("\n\t TLV is too short");
|
|
tlv_hexdump = TRUE;
|
|
goto tlv_tooshort;
|
|
}
|
|
/* Did we capture enough for this part of the TLV? */
|
|
ND_TCHECK_LEN(tlv_tptr,
|
|
sizeof(struct lspping_tlv_downstream_map_ipv4_unmb_t));
|
|
|
|
tlv_ptr.lspping_tlv_downstream_map_ipv4_unmb=
|
|
(const struct lspping_tlv_downstream_map_ipv4_unmb_t *)tlv_tptr;
|
|
ND_PRINT("\n\t Downstream IP: %s"
|
|
"\n\t Downstream Interface Index: 0x%08x",
|
|
GET_IPADDR_STRING(tlv_ptr.lspping_tlv_downstream_map_ipv4_unmb->downstream_ip),
|
|
GET_BE_U_4(tlv_ptr.lspping_tlv_downstream_map_ipv4_unmb->downstream_interface));
|
|
tlv_tptr+=sizeof(struct lspping_tlv_downstream_map_ipv4_unmb_t);
|
|
tlv_tlen-=sizeof(struct lspping_tlv_downstream_map_ipv4_unmb_t);
|
|
break;
|
|
case LSPPING_AFI_IPV6:
|
|
/* Does the data go past the end of the TLV? */
|
|
if (tlv_tlen < sizeof(struct lspping_tlv_downstream_map_ipv6_t)) {
|
|
ND_PRINT("\n\t TLV is too short");
|
|
tlv_hexdump = TRUE;
|
|
goto tlv_tooshort;
|
|
}
|
|
/* Did we capture enough for this part of the TLV? */
|
|
ND_TCHECK_LEN(tlv_tptr,
|
|
sizeof(struct lspping_tlv_downstream_map_ipv6_t));
|
|
|
|
tlv_ptr.lspping_tlv_downstream_map_ipv6=
|
|
(const struct lspping_tlv_downstream_map_ipv6_t *)tlv_tptr;
|
|
ND_PRINT("\n\t Downstream IP: %s"
|
|
"\n\t Downstream Interface IP: %s",
|
|
GET_IP6ADDR_STRING(tlv_ptr.lspping_tlv_downstream_map_ipv6->downstream_ip),
|
|
GET_IP6ADDR_STRING(tlv_ptr.lspping_tlv_downstream_map_ipv6->downstream_interface));
|
|
tlv_tptr+=sizeof(struct lspping_tlv_downstream_map_ipv6_t);
|
|
tlv_tlen-=sizeof(struct lspping_tlv_downstream_map_ipv6_t);
|
|
break;
|
|
case LSPPING_AFI_IPV6_UNMB:
|
|
/* Does the data go past the end of the TLV? */
|
|
if (tlv_tlen < sizeof(struct lspping_tlv_downstream_map_ipv6_unmb_t)) {
|
|
ND_PRINT("\n\t TLV is too short");
|
|
tlv_hexdump = TRUE;
|
|
goto tlv_tooshort;
|
|
}
|
|
/* Did we capture enough for this part of the TLV? */
|
|
ND_TCHECK_LEN(tlv_tptr,
|
|
sizeof(struct lspping_tlv_downstream_map_ipv6_unmb_t));
|
|
|
|
tlv_ptr.lspping_tlv_downstream_map_ipv6_unmb=
|
|
(const struct lspping_tlv_downstream_map_ipv6_unmb_t *)tlv_tptr;
|
|
ND_PRINT("\n\t Downstream IP: %s"
|
|
"\n\t Downstream Interface Index: 0x%08x",
|
|
GET_IP6ADDR_STRING(tlv_ptr.lspping_tlv_downstream_map_ipv6_unmb->downstream_ip),
|
|
GET_BE_U_4(tlv_ptr.lspping_tlv_downstream_map_ipv6_unmb->downstream_interface));
|
|
tlv_tptr+=sizeof(struct lspping_tlv_downstream_map_ipv6_unmb_t);
|
|
tlv_tlen-=sizeof(struct lspping_tlv_downstream_map_ipv6_unmb_t);
|
|
break;
|
|
|
|
default:
|
|
/* should not happen ! - no error message - tok2str() has barked already */
|
|
break;
|
|
}
|
|
|
|
/* Does the data go past the end of the TLV? */
|
|
if (tlv_tlen < sizeof(struct lspping_tlv_downstream_map_info_t)) {
|
|
ND_PRINT("\n\t TLV is too short");
|
|
tlv_hexdump = TRUE;
|
|
goto tlv_tooshort;
|
|
}
|
|
/* Did we capture enough for this part of the TLV? */
|
|
ND_TCHECK_LEN(tlv_tptr,
|
|
sizeof(struct lspping_tlv_downstream_map_info_t));
|
|
|
|
tlv_ptr.lspping_tlv_downstream_map_info=
|
|
(const struct lspping_tlv_downstream_map_info_t *)tlv_tptr;
|
|
|
|
/* FIXME add hash-key type, depth limit, multipath processing */
|
|
|
|
/* FIXME print downstream labels */
|
|
|
|
tlv_hexdump=TRUE; /* dump the TLV until code complete */
|
|
|
|
break;
|
|
|
|
case LSPPING_TLV_BFD_DISCRIMINATOR:
|
|
if (tlv_tlen < LSPPING_TLV_BFD_DISCRIMINATOR_LEN) {
|
|
ND_PRINT("\n\t TLV is too short");
|
|
tlv_hexdump = TRUE;
|
|
goto tlv_tooshort;
|
|
} else {
|
|
ND_PRINT("\n\t BFD Discriminator 0x%08x", GET_BE_U_4(tlv_tptr));
|
|
}
|
|
break;
|
|
|
|
case LSPPING_TLV_VENDOR_ENTERPRISE:
|
|
{
|
|
uint32_t vendor_id;
|
|
|
|
if (tlv_tlen < LSPPING_TLV_VENDOR_ENTERPRISE_LEN) {
|
|
ND_PRINT("\n\t TLV is too short");
|
|
tlv_hexdump = TRUE;
|
|
goto tlv_tooshort;
|
|
} else {
|
|
vendor_id = GET_BE_U_4(tlv_tptr);
|
|
ND_PRINT("\n\t Vendor: %s (0x%04x)",
|
|
tok2str(smi_values, "Unknown", vendor_id),
|
|
vendor_id);
|
|
}
|
|
}
|
|
break;
|
|
|
|
/*
|
|
* FIXME those are the defined TLVs that lack a decoder
|
|
* you are welcome to contribute code ;-)
|
|
*/
|
|
case LSPPING_TLV_PAD:
|
|
case LSPPING_TLV_ERROR_CODE:
|
|
case LSPPING_TLV_VENDOR_PRIVATE:
|
|
|
|
default:
|
|
if (ndo->ndo_vflag <= 1)
|
|
print_unknown_data(ndo, tlv_tptr, "\n\t ", tlv_tlen);
|
|
break;
|
|
}
|
|
/* do we want to see an additionally tlv hexdump ? */
|
|
tlv_tooshort:
|
|
if (ndo->ndo_vflag > 1 || tlv_hexdump==TRUE)
|
|
print_unknown_data(ndo, tptr+sizeof(struct lspping_tlv_header), "\n\t ",
|
|
lspping_tlv_len);
|
|
|
|
|
|
/* All TLVs are aligned to four octet boundary */
|
|
if (lspping_tlv_len % 4) {
|
|
lspping_tlv_len += (4 - lspping_tlv_len % 4);
|
|
/* Does the TLV, including padding, go past the end of the packet? */
|
|
if (tlen < lspping_tlv_len+sizeof(struct lspping_tlv_header))
|
|
goto tooshort;
|
|
}
|
|
|
|
tptr+=lspping_tlv_len+sizeof(struct lspping_tlv_header);
|
|
tlen-=lspping_tlv_len+sizeof(struct lspping_tlv_header);
|
|
}
|
|
return;
|
|
tooshort:
|
|
ND_PRINT("\n\t\t packet is too short");
|
|
}
|