X-Git-Url: https://git.tcpdump.org/tcpdump/blobdiff_plain/bbc1cfa669a5f51ed26bae3784447076e3fbc80f..9974f43f2f45119ed473d9cbfc04405e38decc67:/print-ldp.c diff --git a/print-ldp.c b/print-ldp.c index 0fcd9f41..01f476d0 100644 --- a/print-ldp.c +++ b/print-ldp.c @@ -11,11 +11,12 @@ * FOR A PARTICULAR PURPOSE. * * Original code by Hannes Gredler (hannes@juniper.net) + * and Steinar Haug (sthaug@nethelp.no) */ #ifndef lint static const char rcsid[] _U_ = - "@(#) $Header: /tcpdump/master/tcpdump/print-ldp.c,v 1.6 2003-11-16 09:36:27 guy Exp $"; + "@(#) $Header: /tcpdump/master/tcpdump/print-ldp.c,v 1.8 2004-06-15 09:42:42 hannes Exp $"; #endif #ifdef HAVE_CONFIG_H @@ -29,9 +30,12 @@ static const char rcsid[] _U_ = #include #include "interface.h" +#include "decode_prefix.h" #include "extract.h" #include "addrtoname.h" +#include "l2vpn.h" + /* * ldp common header * @@ -142,6 +146,7 @@ static const struct tok ldp_msg_values[] = { #define LDP_TLV_COMMON_SESSION 0x0500 #define LDP_TLV_ATM_SESSION_PARM 0x0501 #define LDP_TLV_FR_SESSION_PARM 0x0502 +#define LDP_TLV_FT_SESSION 0x0503 #define LDP_TLV_LABEL_REQUEST_MSG_ID 0x0600 static const struct tok ldp_tlv_values[] = { @@ -163,10 +168,29 @@ static const struct tok ldp_tlv_values[] = { { LDP_TLV_COMMON_SESSION, "Common Session Parameters" }, { LDP_TLV_ATM_SESSION_PARM, "ATM Session Parameters" }, { LDP_TLV_FR_SESSION_PARM, "Frame-Relay Session Parameters" }, + { LDP_TLV_FT_SESSION, "Fault-Tolerant Session Parameters" }, { LDP_TLV_LABEL_REQUEST_MSG_ID, "Label Request Message ID" }, { 0, NULL} }; +#define LDP_FEC_WILDCARD 0x01 +#define LDP_FEC_PREFIX 0x02 +#define LDP_FEC_HOSTADDRESS 0x03 +/* From draft-martini-l2circuit-trans-mpls-13.txt */ +#define LDP_FEC_MARTINI_VC 0x80 + +static const struct tok ldp_fec_values[] = { + { LDP_FEC_WILDCARD, "Wildcard" }, + { LDP_FEC_PREFIX, "Prefix" }, + { LDP_FEC_HOSTADDRESS, "Host address" }, + { LDP_FEC_MARTINI_VC, "Martini VC" }, + { 0, NULL} +}; + +/* RFC1700 address family numbers, same definition in print-bgp.c */ +#define AFNUM_INET 1 +#define AFNUM_INET6 2 + #define FALSE 0 #define TRUE 1 @@ -198,7 +222,11 @@ ldp_tlv_print(register const u_char *tptr) { }; const struct ldp_tlv_header *ldp_tlv_header; - u_short tlv_type,tlv_len,tlv_tlen; + u_short tlv_type,tlv_len,tlv_tlen,af,ft_flags; + u_char fec_type; + u_int ui; + char buf[100]; + int i; ldp_tlv_header = (const struct ldp_tlv_header *)tptr; tlv_len=EXTRACT_16BITS(ldp_tlv_header->length); @@ -238,23 +266,121 @@ ldp_tlv_print(register const u_char *tptr) { printf("\n\t Sequence Number: %u", EXTRACT_32BITS(tptr)); break; + case LDP_TLV_ADDRESS_LIST: + af = EXTRACT_16BITS(tptr); + tptr+=2; + printf("\n\t Adress Family: "); + if (af == AFNUM_INET) { + printf("IPv4, addresses:"); + for (i=0; i<(tlv_tlen-2)/4; i++) { + printf(" %s",ipaddr_string(tptr)); + tptr+=4; + } + } +#ifdef INET6 + else if (af == AFNUM_INET6) { + printf("IPv6, addresses:"); + for (i=0; i<(tlv_tlen-2)/16; i++) { + printf(" %s",ip6addr_string(tptr)); + tptr+=16; + } + } +#endif + break; + + case LDP_TLV_COMMON_SESSION: + printf("\n\t Version: %u, Keepalive: %us, Flags: [Downstream %s, Loop Detection %s]", + EXTRACT_16BITS(tptr), EXTRACT_16BITS(tptr+2), + (EXTRACT_16BITS(tptr+6)&0x8000) ? "On Demand" : "Unsolicited", + (EXTRACT_16BITS(tptr+6)&0x4000) ? "Enabled" : "Disabled" + ); + break; + + case LDP_TLV_FEC: + fec_type = *tptr; + printf("\n\t %s FEC (0x%02x)", + tok2str(ldp_fec_values, "Unknown", fec_type), + fec_type); + + tptr+=1; + switch(fec_type) { + + case LDP_FEC_WILDCARD: + break; + case LDP_FEC_PREFIX: + af = EXTRACT_16BITS(tptr); + tptr+=2; + if (af == AFNUM_INET) { + i=decode_prefix4(tptr,buf,sizeof(buf)); + printf(": IPv4 prefix %s",buf); + } +#ifdef INET6 + else if (af == AFNUM_INET6) { + i=decode_prefix6(tptr,buf,sizeof(buf)); + printf(": IPv6 prefix %s",buf); + } +#endif + break; + case LDP_FEC_HOSTADDRESS: + break; + case LDP_FEC_MARTINI_VC: + printf(": %s, %scontrol word, VC %u", + tok2str(l2vpn_encaps_values, "Unknown", EXTRACT_16BITS(tptr)&0x7fff), + EXTRACT_16BITS(tptr)&0x8000 ? "" : "no ", + EXTRACT_32BITS(tptr+7)); + break; + } + + break; + + case LDP_TLV_GENERIC_LABEL: + printf("\n\t Label: %u", EXTRACT_32BITS(tptr) & 0xfffff); + break; + + case LDP_TLV_STATUS: + ui = EXTRACT_32BITS(tptr); + tptr+=4; + printf("\n\t Status: 0x%02x, Flags: [%s and %s forward]", + ui&0x3fffffff, + ui&0x80000000 ? "Fatal error" : "Advisory Notification", + ui&0x40000000 ? "do" : "don't"); + ui = EXTRACT_32BITS(tptr); + tptr+=4; + if (ui) + printf(", causing Message ID: 0x%08x", ui); + break; + + case LDP_TLV_FT_SESSION: + ft_flags = EXTRACT_16BITS(tptr); + printf("\n\t Flags: [%sReconnect, %sSave State, %sAll-Label Protection, %s Checkpoint, %sRe-Learn State]", + ft_flags&0x8000 ? "" : "No ", + ft_flags&0x8 ? "" : "Don't ", + ft_flags&0x4 ? "" : "No ", + ft_flags&0x2 ? "Sequence Numbered Label" : "All Labels", + ft_flags&0x1 ? "" : "Don't "); + tptr+=4; + ui = EXTRACT_32BITS(tptr); + if (ui) + printf(", Reconnect Timeout: %ums", ui); + tptr+=4; + ui = EXTRACT_32BITS(tptr); + if (ui) + printf(", Recovery Time: %ums", ui); + break; + + /* * FIXME those are the defined TLVs that lack a decoder * you are welcome to contribute code ;-) */ - case LDP_TLV_FEC: - case LDP_TLV_ADDRESS_LIST: case LDP_TLV_HOP_COUNT: case LDP_TLV_PATH_VECTOR: - case LDP_TLV_GENERIC_LABEL: case LDP_TLV_ATM_LABEL: case LDP_TLV_FR_LABEL: - case LDP_TLV_STATUS: case LDP_TLV_EXTD_STATUS: case LDP_TLV_RETURNED_PDU: case LDP_TLV_RETURNED_MSG: - case LDP_TLV_COMMON_SESSION: case LDP_TLV_ATM_SESSION_PARM: case LDP_TLV_FR_SESSION_PARM: case LDP_TLV_LABEL_REQUEST_MSG_ID: @@ -304,8 +430,8 @@ ldp_print(register const u_char *pptr, register u_int len) { /* ok they seem to want to know everything - lets fully decode it */ tlen=EXTRACT_16BITS(ldp_com_header->pdu_length); - tptr+=sizeof(const struct ldp_common_header); - tlen-=sizeof(const struct ldp_common_header); + tptr += sizeof(const struct ldp_common_header); + tlen -= sizeof(const struct ldp_common_header)-4; /* Type & Length fields not included */ while(tlen>0) { /* did we capture enough for fully decoding the msg header ? */ @@ -336,7 +462,12 @@ ldp_print(register const u_char *pptr, register u_int len) { switch(msg_type) { + case LDP_MSG_NOTIF: case LDP_MSG_HELLO: + case LDP_MSG_INIT: + case LDP_MSG_KEEPALIVE: + case LDP_MSG_ADDRESS: + case LDP_MSG_LABEL_MAPPING: while(msg_tlen >= 4) { processed = ldp_tlv_print(msg_tptr); if (processed == 0) @@ -351,12 +482,7 @@ ldp_print(register const u_char *pptr, register u_int len) { * you are welcome to contribute code ;-) */ - case LDP_MSG_NOTIF: - case LDP_MSG_INIT: - case LDP_MSG_KEEPALIVE: - case LDP_MSG_ADDRESS: case LDP_MSG_ADDRESS_WITHDRAW: - case LDP_MSG_LABEL_MAPPING: case LDP_MSG_LABEL_REQUEST: case LDP_MSG_LABEL_WITHDRAW: case LDP_MSG_LABEL_RELEASE: @@ -372,8 +498,8 @@ ldp_print(register const u_char *pptr, register u_int len) { print_unknown_data(tptr+sizeof(sizeof(struct ldp_msg_header)),"\n\t ", msg_len); - tptr+=msg_len; - tlen-=msg_len; + tptr += msg_len+4; + tlen -= msg_len+4; } return; trunc: