| /* |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that: (1) source code |
| * distributions retain the above copyright notice and this paragraph |
| * in its entirety, and (2) distributions including binary code include |
| * the above copyright notice and this paragraph in its entirety in |
| * the documentation or other materials provided with the distribution. |
| * THIS SOFTWARE IS PROVIDED ``AS IS'' AND |
| * WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT |
| * LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
| * FOR A PARTICULAR PURPOSE. |
| * |
| * Original code by Hannes Gredler (hannes@gredler.at) |
| */ |
| |
| /* \summary: MPLS LSP PING printer */ |
| |
| /* specification: RFC 4379 */ |
| |
| #ifdef HAVE_CONFIG_H |
| #include <config.h> |
| #endif |
| |
| #include "netdissect-stdinc.h" |
| |
| #define ND_LONGJMP_FROM_TCHECK |
| #include "netdissect.h" |
| #include "extract.h" |
| #include "addrtoname.h" |
| #include "ntp.h" |
| |
| #include "l2vpn.h" |
| #include "oui.h" |
| |
| |
| /* |
| * LSPPING common header |
| * |
| * 0 1 2 3 |
| * 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 |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | Version Number | Must Be Zero | |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | Message Type | Reply mode | Return Code | Return Subcode| |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | Sender's Handle | |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | Sequence Number | |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | TimeStamp Sent (seconds) | |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | TimeStamp Sent (microseconds) | |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | TimeStamp Received (seconds) | |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | TimeStamp Received (microseconds) | |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | TLVs ... | |
| * . . |
| * . . |
| * . . |
| */ |
| |
| struct lspping_common_header { |
| nd_uint16_t version; |
| nd_uint16_t global_flags; |
| nd_uint8_t msg_type; |
| nd_uint8_t reply_mode; |
| nd_uint8_t return_code; |
| nd_uint8_t return_subcode; |
| nd_uint32_t sender_handle; |
| nd_uint32_t seq_number; |
| struct l_fixedpt ts_sent; |
| struct l_fixedpt ts_rcvd; |
| }; |
| |
| #define LSPPING_VERSION 1 |
| |
| static const struct tok lspping_msg_type_values[] = { |
| { 1, "MPLS Echo Request"}, |
| { 2, "MPLS Echo Reply"}, |
| { 0, NULL} |
| }; |
| |
| static const struct tok lspping_reply_mode_values[] = { |
| { 1, "Do not reply"}, |
| { 2, "Reply via an IPv4/IPv6 UDP packet"}, |
| { 3, "Reply via an IPv4/IPv6 UDP packet with Router Alert"}, |
| { 4, "Reply via application level control channel"}, |
| { 0, NULL} |
| }; |
| |
| static const struct tok lspping_return_code_values[] = { |
| { 0, "No return code or return code contained in the Error Code TLV"}, |
| { 1, "Malformed echo request received"}, |
| { 2, "One or more of the TLVs was not understood"}, |
| { 3, "Replying router is an egress for the FEC at stack depth"}, |
| { 4, "Replying router has no mapping for the FEC at stack depth"}, |
| { 5, "Reserved"}, |
| { 6, "Reserved"}, |
| { 7, "Reserved"}, |
| { 8, "Label switched at stack-depth"}, |
| { 9, "Label switched but no MPLS forwarding at stack-depth"}, |
| { 10, "Mapping for this FEC is not the given label at stack depth"}, |
| { 11, "No label entry at stack-depth"}, |
| { 12, "Protocol not associated with interface at FEC stack depth"}, |
| { 13, "Premature termination of ping due to label stack shrinking to a single label"}, |
| { 0, NULL}, |
| }; |
| |
| |
| /* |
| * LSPPING TLV header |
| * 0 1 2 3 |
| * 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 |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | Type | Length | |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | Value | |
| * . . |
| * . . |
| * . . |
| * | | |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| */ |
| |
| struct lspping_tlv_header { |
| nd_uint16_t type; |
| nd_uint16_t length; |
| }; |
| |
| #define LSPPING_TLV_TARGET_FEC_STACK 1 |
| #define LSPPING_TLV_DOWNSTREAM_MAPPING 2 |
| #define LSPPING_TLV_PAD 3 |
| /* not assigned 4 */ |
| #define LSPPING_TLV_VENDOR_ENTERPRISE 5 |
| #define LSPPING_TLV_VENDOR_ENTERPRISE_LEN 4 |
| /* not assigned 6 */ |
| #define LSPPING_TLV_INTERFACE_LABEL_STACK 7 |
| /* not assigned 8 */ |
| #define LSPPING_TLV_ERROR_CODE 9 |
| #define LSPPING_TLV_REPLY_TOS_BYTE 10 |
| #define LSPPING_TLV_BFD_DISCRIMINATOR 15 /* draft-ietf-bfd-mpls-02 */ |
| #define LSPPING_TLV_BFD_DISCRIMINATOR_LEN 4 |
| #define LSPPING_TLV_VENDOR_PRIVATE 0xfc00 |
| |
| static const struct tok lspping_tlv_values[] = { |
| { LSPPING_TLV_TARGET_FEC_STACK, "Target FEC Stack" }, |
| { LSPPING_TLV_DOWNSTREAM_MAPPING, "Downstream Mapping" }, |
| { LSPPING_TLV_PAD, "Pad" }, |
| { LSPPING_TLV_ERROR_CODE, "Error Code" }, |
| { LSPPING_TLV_VENDOR_ENTERPRISE, "Vendor Enterprise Code" }, |
| { LSPPING_TLV_INTERFACE_LABEL_STACK, "Interface Label Stack" }, |
| { LSPPING_TLV_REPLY_TOS_BYTE, "Reply TOS Byte" }, |
| { LSPPING_TLV_BFD_DISCRIMINATOR, "BFD Discriminator" }, |
| { LSPPING_TLV_VENDOR_PRIVATE, "Vendor Private Code" }, |
| { 0, NULL} |
| }; |
| |
| #define LSPPING_TLV_TARGETFEC_SUBTLV_LDP_IPV4 1 |
| #define LSPPING_TLV_TARGETFEC_SUBTLV_LDP_IPV6 2 |
| #define LSPPING_TLV_TARGETFEC_SUBTLV_RSVP_IPV4 3 |
| #define LSPPING_TLV_TARGETFEC_SUBTLV_RSVP_IPV6 4 |
| /* not assigned 5 */ |
| #define LSPPING_TLV_TARGETFEC_SUBTLV_L3VPN_IPV4 6 |
| #define LSPPING_TLV_TARGETFEC_SUBTLV_L3VPN_IPV6 7 |
| #define LSPPING_TLV_TARGETFEC_SUBTLV_L2VPN_ENDPT 8 |
| #define LSPPING_TLV_TARGETFEC_SUBTLV_FEC_128_PW_OLD 9 |
| #define LSPPING_TLV_TARGETFEC_SUBTLV_FEC_128_PW 10 |
| #define LSPPING_TLV_TARGETFEC_SUBTLV_FEC_129_PW 11 |
| #define LSPPING_TLV_TARGETFEC_SUBTLV_BGP_IPV4 12 |
| #define LSPPING_TLV_TARGETFEC_SUBTLV_BGP_IPV6 13 |
| #define LSPPING_TLV_TARGETFEC_SUBTLV_GENERIC_IPV4 14 |
| #define LSPPING_TLV_TARGETFEC_SUBTLV_GENERIC_IPV6 15 |
| #define LSPPING_TLV_TARGETFEC_SUBTLV_NIL_FEC 16 |
| |
| static const struct tok lspping_tlvtargetfec_subtlv_values[] = { |
| { LSPPING_TLV_TARGETFEC_SUBTLV_LDP_IPV4, "LDP IPv4 prefix"}, |
| { LSPPING_TLV_TARGETFEC_SUBTLV_LDP_IPV6, "LDP IPv6 prefix"}, |
| { LSPPING_TLV_TARGETFEC_SUBTLV_RSVP_IPV4, "RSVP IPv4 Session Query"}, |
| { LSPPING_TLV_TARGETFEC_SUBTLV_RSVP_IPV6, "RSVP IPv6 Session Query"}, |
| { 5, "Reserved"}, |
| { LSPPING_TLV_TARGETFEC_SUBTLV_L3VPN_IPV4, "VPN IPv4 prefix"}, |
| { LSPPING_TLV_TARGETFEC_SUBTLV_L3VPN_IPV6, "VPN IPv6 prefix"}, |
| { LSPPING_TLV_TARGETFEC_SUBTLV_L2VPN_ENDPT, "L2 VPN endpoint"}, |
| { LSPPING_TLV_TARGETFEC_SUBTLV_FEC_128_PW_OLD, "FEC 128 pseudowire (old)"}, |
| { LSPPING_TLV_TARGETFEC_SUBTLV_FEC_128_PW, "FEC 128 pseudowire"}, |
| { LSPPING_TLV_TARGETFEC_SUBTLV_BGP_IPV4, "BGP labeled IPv4 prefix"}, |
| { LSPPING_TLV_TARGETFEC_SUBTLV_BGP_IPV6, "BGP labeled IPv6 prefix"}, |
| { 0, NULL} |
| }; |
| |
| /* |
| * 0 1 2 3 |
| * 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 |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | IPv4 prefix | |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | Prefix Length | Must Be Zero | |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| */ |
| struct lspping_tlv_targetfec_subtlv_ldp_ipv4_t { |
| nd_ipv4 prefix; |
| nd_uint8_t prefix_len; |
| }; |
| |
| /* |
| * 0 1 2 3 |
| * 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 |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | IPv6 prefix | |
| * | (16 octets) | |
| * | | |
| * | | |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | Prefix Length | Must Be Zero | |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| */ |
| struct lspping_tlv_targetfec_subtlv_ldp_ipv6_t { |
| nd_ipv6 prefix; |
| nd_uint8_t prefix_len; |
| }; |
| |
| /* |
| * 0 1 2 3 |
| * 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 |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | IPv4 tunnel end point address | |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | Must Be Zero | Tunnel ID | |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | Extended Tunnel ID | |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | IPv4 tunnel sender address | |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | Must Be Zero | LSP ID | |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| */ |
| struct lspping_tlv_targetfec_subtlv_rsvp_ipv4_t { |
| nd_ipv4 tunnel_endpoint; |
| nd_byte res[2]; |
| nd_uint16_t tunnel_id; |
| nd_ipv4 extended_tunnel_id; |
| nd_ipv4 tunnel_sender; |
| nd_byte res2[2]; |
| nd_uint16_t lsp_id; |
| }; |
| |
| /* |
| * 0 1 2 3 |
| * 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 |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | IPv6 tunnel end point address | |
| * | | |
| * | | |
| * | | |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | Must Be Zero | Tunnel ID | |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | Extended Tunnel ID | |
| * | | |
| * | | |
| * | | |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | IPv6 tunnel sender address | |
| * | | |
| * | | |
| * | | |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | Must Be Zero | LSP ID | |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| */ |
| struct lspping_tlv_targetfec_subtlv_rsvp_ipv6_t { |
| nd_ipv6 tunnel_endpoint; |
| nd_byte res[2]; |
| nd_uint16_t tunnel_id; |
| nd_ipv6 extended_tunnel_id; |
| nd_ipv6 tunnel_sender; |
| nd_byte res2[2]; |
| nd_uint16_t lsp_id; |
| }; |
| |
| /* |
| * 0 1 2 3 |
| * 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 |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | Route Distinguisher | |
| * | (8 octets) | |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | IPv4 prefix | |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | Prefix Length | Must Be Zero | |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| */ |
| struct lspping_tlv_targetfec_subtlv_l3vpn_ipv4_t { |
| nd_byte rd[8]; |
| nd_ipv4 prefix; |
| nd_uint8_t prefix_len; |
| }; |
| |
| /* |
| * 0 1 2 3 |
| * 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 |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | Route Distinguisher | |
| * | (8 octets) | |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | IPv6 prefix | |
| * | (16 octets) | |
| * | | |
| * | | |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | Prefix Length | Must Be Zero | |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| */ |
| struct lspping_tlv_targetfec_subtlv_l3vpn_ipv6_t { |
| nd_byte rd[8]; |
| nd_ipv6 prefix; |
| nd_uint8_t prefix_len; |
| }; |
| |
| /* |
| * 0 1 2 3 |
| * 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 |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | Route Distinguisher | |
| * | (8 octets) | |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | Sender's VE ID | Receiver's VE ID | |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | Encapsulation Type | Must Be Zero | |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * 0 1 2 3 |
| */ |
| struct lspping_tlv_targetfec_subtlv_l2vpn_endpt_t { |
| nd_byte rd[8]; |
| nd_uint16_t sender_ve_id; |
| nd_uint16_t receiver_ve_id; |
| nd_uint16_t encapsulation; |
| }; |
| |
| /* |
| * 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 |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | Remote PE Address | |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | PW ID | |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | PW Type | Must Be Zero | |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| */ |
| struct lspping_tlv_targetfec_subtlv_fec_128_pw_old { |
| nd_ipv4 remote_pe_address; |
| nd_uint32_t pw_id; |
| nd_uint16_t pw_type; |
| }; |
| |
| /* |
| * 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 |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | Sender's PE Address | |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | Remote PE Address | |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | PW ID | |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | PW Type | Must Be Zero | |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| */ |
| struct lspping_tlv_targetfec_subtlv_fec_128_pw { |
| nd_ipv4 sender_pe_address; |
| nd_ipv4 remote_pe_address; |
| nd_uint32_t pw_id; |
| nd_uint16_t pw_type; |
| }; |
| |
| /* |
| * 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 |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | IPv4 prefix | |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | Prefix Length | Must Be Zero | |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| */ |
| struct lspping_tlv_targetfec_subtlv_bgp_ipv4_t { |
| nd_ipv4 prefix; |
| nd_uint8_t prefix_len; |
| }; |
| |
| /* |
| * 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 |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | IPv6 prefix | |
| * | (16 octets) | |
| * | | |
| * | | |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | Prefix Length | Must Be Zero | |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| */ |
| struct lspping_tlv_targetfec_subtlv_bgp_ipv6_t { |
| nd_ipv6 prefix; |
| nd_uint8_t prefix_len; |
| }; |
| |
| /* |
| * 0 1 2 3 |
| * 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 |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | MTU | Address Type | Resvd (SBZ) | |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | Downstream IP Address (4 or 16 octets) | |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | Downstream Interface Address (4 or 16 octets) | |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | Multipath Type| Depth Limit | Multipath Length | |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * . . |
| * . (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"); |
| } |
