+ printf(", Default Metric: %d, %s",
+ ISIS_LSP_TLV_METRIC_VALUE(isis_metric_block->metric_default),
+ ISIS_LSP_TLV_METRIC_IE(isis_metric_block->metric_default) ? "External" : "Internal");
+ if (!ISIS_LSP_TLV_METRIC_SUPPORTED(isis_metric_block->metric_delay))
+ printf("\n\t\t Delay Metric: %d, %s",
+ ISIS_LSP_TLV_METRIC_VALUE(isis_metric_block->metric_delay),
+ ISIS_LSP_TLV_METRIC_IE(isis_metric_block->metric_delay) ? "External" : "Internal");
+ if (!ISIS_LSP_TLV_METRIC_SUPPORTED(isis_metric_block->metric_expense))
+ printf("\n\t\t Expense Metric: %d, %s",
+ ISIS_LSP_TLV_METRIC_VALUE(isis_metric_block->metric_expense),
+ ISIS_LSP_TLV_METRIC_IE(isis_metric_block->metric_expense) ? "External" : "Internal");
+ if (!ISIS_LSP_TLV_METRIC_SUPPORTED(isis_metric_block->metric_error))
+ printf("\n\t\t Error Metric: %d, %s",
+ ISIS_LSP_TLV_METRIC_VALUE(isis_metric_block->metric_error),
+ ISIS_LSP_TLV_METRIC_IE(isis_metric_block->metric_error) ? "External" : "Internal");
+
+ return(1); /* everything is ok */
+}
+
+static int
+isis_print_tlv_ip_reach (const u_int8_t *cp, const char *ident, int length)
+{
+ int prefix_len;
+ const struct isis_tlv_ip_reach *tlv_ip_reach;
+
+ tlv_ip_reach = (const struct isis_tlv_ip_reach *)cp;
+
+ while (length > 0) {
+ if ((size_t)length < sizeof(*tlv_ip_reach)) {
+ printf("short IPv4 Reachability (%d vs %lu)",
+ length,
+ (unsigned long)sizeof(*tlv_ip_reach));
+ return (0);
+ }
+
+ if (!TTEST(*tlv_ip_reach))
+ return (0);
+
+ prefix_len = mask2plen(EXTRACT_32BITS(tlv_ip_reach->mask));
+
+ if (prefix_len == -1)
+ printf("%sIPv4 prefix: %s mask %s",
+ ident,
+ ipaddr_string((tlv_ip_reach->prefix)),
+ ipaddr_string((tlv_ip_reach->mask)));
+ else
+ printf("%sIPv4 prefix: %15s/%u",
+ ident,
+ ipaddr_string((tlv_ip_reach->prefix)),
+ prefix_len);
+
+ printf(", Distribution: %s, Metric: %u, %s",
+ ISIS_LSP_TLV_METRIC_UPDOWN(tlv_ip_reach->isis_metric_block.metric_default) ? "down" : "up",
+ ISIS_LSP_TLV_METRIC_VALUE(tlv_ip_reach->isis_metric_block.metric_default),
+ ISIS_LSP_TLV_METRIC_IE(tlv_ip_reach->isis_metric_block.metric_default) ? "External" : "Internal");
+
+ if (!ISIS_LSP_TLV_METRIC_SUPPORTED(tlv_ip_reach->isis_metric_block.metric_delay))
+ printf("%s Delay Metric: %u, %s",
+ ident,
+ ISIS_LSP_TLV_METRIC_VALUE(tlv_ip_reach->isis_metric_block.metric_delay),
+ ISIS_LSP_TLV_METRIC_IE(tlv_ip_reach->isis_metric_block.metric_delay) ? "External" : "Internal");
+
+ if (!ISIS_LSP_TLV_METRIC_SUPPORTED(tlv_ip_reach->isis_metric_block.metric_expense))
+ printf("%s Expense Metric: %u, %s",
+ ident,
+ ISIS_LSP_TLV_METRIC_VALUE(tlv_ip_reach->isis_metric_block.metric_expense),
+ ISIS_LSP_TLV_METRIC_IE(tlv_ip_reach->isis_metric_block.metric_expense) ? "External" : "Internal");
+
+ if (!ISIS_LSP_TLV_METRIC_SUPPORTED(tlv_ip_reach->isis_metric_block.metric_error))
+ printf("%s Error Metric: %u, %s",
+ ident,
+ ISIS_LSP_TLV_METRIC_VALUE(tlv_ip_reach->isis_metric_block.metric_error),
+ ISIS_LSP_TLV_METRIC_IE(tlv_ip_reach->isis_metric_block.metric_error) ? "External" : "Internal");
+
+ length -= sizeof(struct isis_tlv_ip_reach);
+ tlv_ip_reach++;
+ }
+ return (1);
+}
+
+/*
+ * this is the common IP-REACH subTLV decoder it is called
+ * from various EXTD-IP REACH TLVs (135,235,236,237)
+ */
+
+static int
+isis_print_ip_reach_subtlv (const u_int8_t *tptr,int subt,int subl,const char *ident) {
+
+ /* first lets see if we know the subTLVs name*/
+ printf("%s%s subTLV #%u, length: %u",
+ ident,
+ tok2str(isis_ext_ip_reach_subtlv_values,
+ "unknown",
+ subt),
+ subt,
+ subl);
+
+ if (!TTEST2(*tptr,subl))
+ goto trunctlv;
+
+ switch(subt) {
+ case SUBTLV_IP_REACH_ADMIN_TAG32:
+ while (subl >= 4) {
+ printf(", 0x%08x (=%u)",
+ EXTRACT_32BITS(tptr),
+ EXTRACT_32BITS(tptr));
+ tptr+=4;
+ subl-=4;
+ }
+ break;
+ case SUBTLV_IP_REACH_ADMIN_TAG64:
+ while (subl >= 8) {
+ printf(", 0x%08x%08x",
+ EXTRACT_32BITS(tptr),
+ EXTRACT_32BITS(tptr+4));
+ tptr+=8;
+ subl-=8;
+ }
+ break;
+ default:
+ if(!print_unknown_data(tptr,"\n\t\t ",
+ subl))
+ return(0);
+ break;
+ }
+ return(1);
+
+trunctlv:
+ printf("%spacket exceeded snapshot",ident);
+ return(0);
+}
+
+/*
+ * this is the common IS-REACH subTLV decoder it is called
+ * from isis_print_ext_is_reach()
+ */
+
+static int
+isis_print_is_reach_subtlv (const u_int8_t *tptr,int subt,int subl,const char *ident) {
+
+ int priority_level;
+ union { /* int to float conversion buffer for several subTLVs */
+ float f;
+ u_int32_t i;
+ } bw;
+
+ /* first lets see if we know the subTLVs name*/
+ printf("%s%s subTLV #%u, length: %u",
+ ident,
+ tok2str(isis_ext_is_reach_subtlv_values,
+ "unknown",
+ subt),
+ subt,
+ subl);
+
+ if (!TTEST2(*tptr,subl))
+ goto trunctlv;
+
+ switch(subt) {
+ case SUBTLV_EXT_IS_REACH_ADMIN_GROUP:
+ case SUBTLV_EXT_IS_REACH_LINK_LOCAL_REMOTE_ID:
+ case SUBTLV_EXT_IS_REACH_LINK_REMOTE_ID:
+ printf(", 0x%08x", EXTRACT_32BITS(tptr));
+ if (subl == 8) /* draft-ietf-isis-gmpls-extensions */
+ printf(", 0x%08x", EXTRACT_32BITS(tptr+4));
+ break;
+ case SUBTLV_EXT_IS_REACH_IPV4_INTF_ADDR:
+ case SUBTLV_EXT_IS_REACH_IPV4_NEIGHBOR_ADDR:
+ printf(", %s", ipaddr_string(tptr));
+ break;
+ case SUBTLV_EXT_IS_REACH_MAX_LINK_BW :
+ case SUBTLV_EXT_IS_REACH_RESERVABLE_BW:
+ bw.i = EXTRACT_32BITS(tptr);
+ printf(", %.3f Mbps", bw.f*8/1000000 );
+ break;
+ case SUBTLV_EXT_IS_REACH_UNRESERVED_BW :
+ for (priority_level = 0; priority_level < 8; priority_level++) {
+ bw.i = EXTRACT_32BITS(tptr);
+ printf("%s priority level %d: %.3f Mbps",
+ ident,
+ priority_level,
+ bw.f*8/1000000 );
+ tptr+=4;
+ }
+ break;
+ case SUBTLV_EXT_IS_REACH_TE_METRIC:
+ printf(", %u", EXTRACT_24BITS(tptr));
+ break;
+ case SUBTLV_EXT_IS_REACH_LINK_PROTECTION_TYPE:
+ printf(", %s, Priority %u",
+ bittok2str(gmpls_link_prot_values, "none", *tptr),
+ *(tptr+1));
+ break;
+ case SUBTLV_EXT_IS_REACH_INTF_SW_CAP_DESCR:
+ printf("%s Interface Switching Capability:%s",
+ ident,
+ tok2str(gmpls_switch_cap_values, "Unknown", *(tptr)));
+ printf(", LSP Encoding: %s",
+ tok2str(gmpls_encoding_values, "Unknown", *(tptr+1)));
+ tptr+=4;
+ printf("%s Max LSP Bandwidth:",ident);
+ for (priority_level = 0; priority_level < 8; priority_level++) {
+ bw.i = EXTRACT_32BITS(tptr);
+ printf("%s priority level %d: %.3f Mbps",
+ ident,
+ priority_level,
+ bw.f*8/1000000 );
+ tptr+=4;
+ }
+ subl-=36;
+ /* there is some optional stuff left to decode but this is as of yet
+ not specified so just lets hexdump what is left */
+ if(subl>0){
+ if(!print_unknown_data(tptr,"\n\t\t ",
+ subl-36))
+ return(0);
+ }
+ break;
+ default:
+ if(!print_unknown_data(tptr,"\n\t\t ",
+ subl))
+ return(0);
+ break;
+ }
+ return(1);
+
+trunctlv:
+ printf("%spacket exceeded snapshot",ident);
+ return(0);
+}
+
+
+/*
+ * this is the common IS-REACH decoder it is called
+ * from various EXTD-IS REACH style TLVs (22,24,222)
+ */
+
+static int
+isis_print_ext_is_reach (const u_int8_t *tptr,const char *ident, int tlv) {
+
+ char ident_buffer[20];
+ int subt,subl,tslen;
+ int proc_bytes = 0; /* how many bytes did we process ? */
+
+ if (!TTEST2(*tptr, NODE_ID_LEN))
+ return(0);
+
+ printf("%sIS Neighbor: %s", ident, isis_print_id(tptr, NODE_ID_LEN));
+ tptr+=(NODE_ID_LEN);
+
+ if (tlv != TLV_IS_ALIAS_ID) {
+ if (!TTEST2(*tptr, 3))
+ return(0);
+ printf(", Metric: %d",EXTRACT_24BITS(tptr));
+ tptr+=3;
+ }
+
+ if (!TTEST2(*tptr, 1))
+ return(0);
+ tslen=*(tptr++); /* read out subTLV length */
+ proc_bytes=NODE_ID_LEN+3+1;
+ printf(", %ssub-TLVs present",tslen ? "" : "no ");
+ if (tslen) {
+ printf(" (%u)",tslen);
+ while (tslen>0) {
+ if (!TTEST2(*tptr,2))
+ return(0);
+ subt=*(tptr++);
+ subl=*(tptr++);
+ /* prepend the ident string */
+ snprintf(ident_buffer, sizeof(ident_buffer), "%s ",ident);
+ if(!isis_print_is_reach_subtlv(tptr,subt,subl,ident_buffer))
+ return(0);
+ tptr+=subl;
+ tslen-=(subl+2);
+ proc_bytes+=(subl+2);
+ }
+ }
+ return(proc_bytes);
+}
+
+/*
+ * this is the common Multi Topology ID decoder
+ * it is called from various MT-TLVs (222,229,235,237)
+ */
+
+static int
+isis_print_mtid (const u_int8_t *tptr,const char *ident) {
+
+ if (!TTEST2(*tptr, 2))
+ return(0);
+
+ printf("%s%s",
+ ident,
+ tok2str(isis_mt_values,
+ "Reserved for IETF Consensus",
+ ISIS_MASK_MTID(EXTRACT_16BITS(tptr))));
+
+ printf(" Topology (0x%03x), Flags: [%s]",
+ ISIS_MASK_MTID(EXTRACT_16BITS(tptr)),
+ bittok2str(isis_mt_flag_values, "none",ISIS_MASK_MTFLAGS(EXTRACT_16BITS(tptr))));
+
+ return(2);
+}
+
+/*
+ * this is the common extended IP reach decoder
+ * it is called from TLVs (135,235,236,237)
+ * we process the TLV and optional subTLVs and return
+ * the amount of processed bytes
+ */
+
+static int
+isis_print_extd_ip_reach (const u_int8_t *tptr, const char *ident, u_int16_t afi) {
+
+ char ident_buffer[20];
+ u_int8_t prefix[16]; /* shared copy buffer for IPv4 and IPv6 prefixes */
+ u_int metric, status_byte, bit_length, byte_length, sublen, processed, subtlvtype, subtlvlen;
+
+ if (!TTEST2(*tptr, 4))
+ return (0);
+ metric = EXTRACT_32BITS(tptr);
+ processed=4;
+ tptr+=4;
+
+ if (afi == IPV4) {
+ if (!TTEST2(*tptr, 1)) /* fetch status byte */
+ return (0);
+ status_byte=*(tptr++);
+ bit_length = status_byte&0x3f;
+ processed++;
+#ifdef INET6
+ } else if (afi == IPV6) {
+ if (!TTEST2(*tptr, 1)) /* fetch status & prefix_len byte */
+ return (0);
+ status_byte=*(tptr++);
+ bit_length=*(tptr++);
+ processed+=2;
+#endif
+ } else
+ return (0); /* somebody is fooling us */
+
+ byte_length = (bit_length + 7) / 8; /* prefix has variable length encoding */
+
+ if (!TTEST2(*tptr, byte_length))
+ return (0);
+ memset(prefix, 0, 16); /* clear the copy buffer */
+ memcpy(prefix,tptr,byte_length); /* copy as much as is stored in the TLV */
+ tptr+=byte_length;
+ processed+=byte_length;
+
+ if (afi == IPV4)
+ printf("%sIPv4 prefix: %15s/%u",
+ ident,
+ ipaddr_string(prefix),
+ bit_length);
+#ifdef INET6
+ if (afi == IPV6)
+ printf("%sIPv6 prefix: %s/%u",
+ ident,
+ ip6addr_string(prefix),
+ bit_length);
+#endif
+
+ printf(", Distribution: %s, Metric: %u",
+ ISIS_MASK_TLV_EXT_IP_UPDOWN(status_byte) ? "down" : "up",
+ metric);
+
+ if (afi == IPV4 && ISIS_MASK_TLV_EXT_IP_SUBTLV(status_byte))
+ printf(", sub-TLVs present");
+#ifdef INET6
+ if (afi == IPV6)
+ printf(", %s%s",
+ ISIS_MASK_TLV_EXT_IP6_IE(status_byte) ? "External" : "Internal",
+ ISIS_MASK_TLV_EXT_IP6_SUBTLV(status_byte) ? ", sub-TLVs present" : "");
+#endif
+
+ if ((ISIS_MASK_TLV_EXT_IP_SUBTLV(status_byte) && afi == IPV4) ||
+ (ISIS_MASK_TLV_EXT_IP6_SUBTLV(status_byte) && afi == IPV6)) {
+ /* assume that one prefix can hold more
+ than one subTLV - therefore the first byte must reflect
+ the aggregate bytecount of the subTLVs for this prefix
+ */
+ if (!TTEST2(*tptr, 1))
+ return (0);
+ sublen=*(tptr++);
+ processed+=sublen+1;
+ printf(" (%u)",sublen); /* print out subTLV length */
+
+ while (sublen>0) {
+ if (!TTEST2(*tptr,2))
+ return (0);
+ subtlvtype=*(tptr++);
+ subtlvlen=*(tptr++);
+ /* prepend the ident string */
+ snprintf(ident_buffer, sizeof(ident_buffer), "%s ",ident);
+ if(!isis_print_ip_reach_subtlv(tptr,subtlvtype,subtlvlen,ident_buffer))
+ return(0);
+ tptr+=subtlvlen;
+ sublen-=(subtlvlen+2);
+ }
+ }
+ return (processed);
+}
+
+/*
+ * isis_print
+ * Decode IS-IS packets. Return 0 on error.
+ */
+
+static int isis_print (const u_int8_t *p, u_int length)
+{
+ const struct isis_common_header *header;
+
+ const struct isis_iih_lan_header *header_iih_lan;
+ const struct isis_iih_ptp_header *header_iih_ptp;
+ const struct isis_lsp_header *header_lsp;
+ const struct isis_csnp_header *header_csnp;
+ const struct isis_psnp_header *header_psnp;
+
+ const struct isis_tlv_lsp *tlv_lsp;
+ const struct isis_tlv_ptp_adj *tlv_ptp_adj;
+ const struct isis_tlv_is_reach *tlv_is_reach;
+ const struct isis_tlv_es_reach *tlv_es_reach;
+
+ u_int8_t pdu_type, max_area, id_length, tlv_type, tlv_len, tmp, alen, lan_alen, prefix_len;
+ u_int8_t ext_is_len, ext_ip_len, mt_len;
+ const u_int8_t *optr, *pptr, *tptr;
+ u_short packet_len,pdu_len;
+ u_int i;
+
+ packet_len=length;
+ optr = p; /* initialize the _o_riginal pointer to the packet start -
+ need it for parsing the checksum TLV */
+ header = (const struct isis_common_header *)p;
+ TCHECK(*header);
+ pptr = p+(ISIS_COMMON_HEADER_SIZE);
+ header_iih_lan = (const struct isis_iih_lan_header *)pptr;
+ header_iih_ptp = (const struct isis_iih_ptp_header *)pptr;
+ header_lsp = (const struct isis_lsp_header *)pptr;
+ header_csnp = (const struct isis_csnp_header *)pptr;
+ header_psnp = (const struct isis_psnp_header *)pptr;
+
+ /*
+ * Sanity checking of the header.
+ */
+
+ if (header->version != ISIS_VERSION) {
+ printf(", version %d packet not supported", header->version);
+ return (0);
+ }
+
+ if ((header->id_length != SYSTEM_ID_LEN) && (header->id_length != 0)) {
+ printf(", system ID length of %d is not supported",
+ header->id_length);
+ return (0);
+ }
+
+ if (header->pdu_version != ISIS_VERSION) {
+ printf(", version %d packet not supported", header->pdu_version);
+ return (0);
+ }
+
+ max_area = header->max_area;
+ switch(max_area) {
+ case 0:
+ max_area = 3; /* silly shit */
+ break;
+ case 255:
+ printf(", bad packet -- 255 areas");
+ return (0);
+ default:
+ break;
+ }
+
+ id_length = header->id_length;
+ switch(id_length) {
+ case 0:
+ id_length = 6; /* silly shit again */
+ break;
+ case 1: /* 1-8 are valid sys-ID lenghts */
+ case 2:
+ case 3:
+ case 4:
+ case 5:
+ case 6:
+ case 7:
+ case 8:
+ break;
+ case 255:
+ id_length = 0; /* entirely useless */
+ break;
+ default:
+ break;
+ }
+
+ /* toss any non 6-byte sys-ID len PDUs */
+ if (id_length != 6 ) {
+ printf(", bad packet -- illegal sys-ID length (%u)", id_length);
+ return (0);
+ }
+
+ pdu_type=header->pdu_type;
+
+ /* in non-verbose mode print the basic PDU Type plus PDU specific brief information*/
+ if (vflag < 1) {
+ printf(", IS-IS, %s",
+ tok2str(isis_pdu_values,"unknown PDU-Type %u",pdu_type));
+
+ switch (pdu_type) {
+
+ case L1_LAN_IIH:
+ case L2_LAN_IIH:
+ printf(", source-id %s",
+ isis_print_id(header_iih_lan->source_id,SYSTEM_ID_LEN));
+ printf(", DIS lan-id %s",
+ isis_print_id(header_iih_lan->lan_id,NODE_ID_LEN));
+ break;
+ case PTP_IIH:
+ printf(", source-id %s", isis_print_id(header_iih_ptp->source_id,SYSTEM_ID_LEN));
+ break;
+ case L1_LSP:
+ case L2_LSP:
+ printf(", lsp-id %s, seq 0x%08x, lifetime %5us",
+ isis_print_id(header_lsp->lsp_id, LSP_ID_LEN),
+ EXTRACT_32BITS(header_lsp->sequence_number),
+ EXTRACT_16BITS(header_lsp->remaining_lifetime));
+ break;
+ case L1_CSNP:
+ case L2_CSNP:
+ printf(", source-id %s", isis_print_id(header_csnp->source_id,SYSTEM_ID_LEN));
+ break;
+ case L1_PSNP:
+ case L2_PSNP:
+ printf(", source-id %s", isis_print_id(header_psnp->source_id,SYSTEM_ID_LEN));
+ break;
+
+ }
+ printf(", length %u", length);
+
+ return(1);
+ }
+
+ /* ok they seem to want to know everything - lets fully decode it */
+ printf(", IS-IS, length: %u",length);
+
+ printf("\n\t%s, hlen: %u, v: %u, pdu-v: %u, sys-id-len: %u (%u), max-area: %u (%u)",
+ tok2str(isis_pdu_values,
+ "unknown, type %u",
+ pdu_type),
+ header->fixed_len,
+ header->version,
+ header->pdu_version,
+ id_length,
+ header->id_length,
+ max_area,
+ header->max_area);
+
+ if (vflag > 1) {
+ if(!print_unknown_data(optr,"\n\t",8)) /* provide the _o_riginal pointer */
+ return(0); /* for optionally debugging the common header */
+ }
+
+ switch (pdu_type) {
+
+ case L1_LAN_IIH:
+ case L2_LAN_IIH:
+ if (header->fixed_len != (ISIS_COMMON_HEADER_SIZE+ISIS_IIH_LAN_HEADER_SIZE)) {
+ printf(", bogus fixed header length %u should be %lu",
+ header->fixed_len, (unsigned long)ISIS_IIH_LAN_HEADER_SIZE);
+ return (0);
+ }
+
+ pdu_len=EXTRACT_16BITS(header_iih_lan->pdu_len);
+ if (packet_len>pdu_len) {
+ packet_len=pdu_len; /* do TLV decoding as long as it makes sense */
+ length=pdu_len;
+ }
+
+ TCHECK(*header_iih_lan);
+ printf("\n\t source-id: %s, holding time: %us, Flags: [%s]",
+ isis_print_id(header_iih_lan->source_id,SYSTEM_ID_LEN),
+ EXTRACT_16BITS(header_iih_lan->holding_time),
+ tok2str(isis_iih_circuit_type_values,
+ "unknown circuit type 0x%02x",
+ header_iih_lan->circuit_type));
+
+ printf("\n\t DIS lan-id: %s, Priority: %u, PDU length: %u",
+ isis_print_id(header_iih_lan->lan_id, NODE_ID_LEN),
+ (header_iih_lan->priority) & PRIORITY_MASK,
+ pdu_len);
+
+ if (vflag > 1) {
+ if(!print_unknown_data(pptr,"\n\t ",ISIS_IIH_LAN_HEADER_SIZE))
+ return(0);
+ }
+
+ packet_len -= (ISIS_COMMON_HEADER_SIZE+ISIS_IIH_LAN_HEADER_SIZE);
+ pptr = p + (ISIS_COMMON_HEADER_SIZE+ISIS_IIH_LAN_HEADER_SIZE);
+ break;
+
+ case PTP_IIH:
+ if (header->fixed_len != (ISIS_COMMON_HEADER_SIZE+ISIS_IIH_PTP_HEADER_SIZE)) {
+ printf(", bogus fixed header length %u should be %lu",
+ header->fixed_len, (unsigned long)ISIS_IIH_PTP_HEADER_SIZE);
+ return (0);
+ }
+
+ pdu_len=EXTRACT_16BITS(header_iih_ptp->pdu_len);
+ if (packet_len>pdu_len) {
+ packet_len=pdu_len; /* do TLV decoding as long as it makes sense */
+ length=pdu_len;
+ }
+
+ TCHECK(*header_iih_ptp);
+ printf("\n\t source-id: %s, holding time: %us, Flags: [%s]",
+ isis_print_id(header_iih_ptp->source_id,SYSTEM_ID_LEN),
+ EXTRACT_16BITS(header_iih_ptp->holding_time),
+ tok2str(isis_iih_circuit_type_values,
+ "unknown circuit type 0x%02x",
+ header_iih_ptp->circuit_type));
+
+ printf("\n\t circuit-id: 0x%02x, PDU length: %u",
+ header_iih_ptp->circuit_id,
+ pdu_len);
+
+ if (vflag > 1) {
+ if(!print_unknown_data(pptr,"\n\t ",ISIS_IIH_PTP_HEADER_SIZE))
+ return(0);
+ }
+
+ packet_len -= (ISIS_COMMON_HEADER_SIZE+ISIS_IIH_PTP_HEADER_SIZE);
+ pptr = p + (ISIS_COMMON_HEADER_SIZE+ISIS_IIH_PTP_HEADER_SIZE);
+ break;
+
+ case L1_LSP:
+ case L2_LSP:
+ if (header->fixed_len != (ISIS_COMMON_HEADER_SIZE+ISIS_LSP_HEADER_SIZE)) {
+ printf(", bogus fixed header length %u should be %lu",
+ header->fixed_len, (unsigned long)ISIS_LSP_HEADER_SIZE);
+ return (0);
+ }
+
+ pdu_len=EXTRACT_16BITS(header_lsp->pdu_len);
+ if (packet_len>pdu_len) {
+ packet_len=pdu_len; /* do TLV decoding as long as it makes sense */
+ length=pdu_len;
+ }
+
+ TCHECK(*header_lsp);
+ printf("\n\t lsp-id: %s, seq: 0x%08x, lifetime: %5us",
+ isis_print_id(header_lsp->lsp_id, LSP_ID_LEN),
+ EXTRACT_32BITS(header_lsp->sequence_number),
+ EXTRACT_16BITS(header_lsp->remaining_lifetime));
+ /* verify the checksum -
+ * checking starts at the lsp-id field
+ * which is 12 bytes after the packet start*/
+ printf("\n\t chksum: 0x%04x (%s), PDU length: %u",
+ EXTRACT_16BITS(header_lsp->checksum),
+ (osi_cksum(optr+12, length-12)) ? "incorrect" : "correct",
+ pdu_len);
+
+ printf(", %s", ISIS_MASK_LSP_OL_BIT(header_lsp->typeblock) ? "Overload bit set, " : "");
+
+ if (ISIS_MASK_LSP_ATT_BITS(header_lsp->typeblock)) {
+ printf("%s", ISIS_MASK_LSP_ATT_DEFAULT_BIT(header_lsp->typeblock) ? "default " : "");
+ printf("%s", ISIS_MASK_LSP_ATT_DELAY_BIT(header_lsp->typeblock) ? "delay " : "");
+ printf("%s", ISIS_MASK_LSP_ATT_EXPENSE_BIT(header_lsp->typeblock) ? "expense " : "");
+ printf("%s", ISIS_MASK_LSP_ATT_ERROR_BIT(header_lsp->typeblock) ? "error " : "");
+ printf("ATT bit set, ");
+ }
+ printf("%s", ISIS_MASK_LSP_PARTITION_BIT(header_lsp->typeblock) ? "P bit set, " : "");
+ printf("%s", tok2str(isis_lsp_istype_values,"Unknown(0x%x)",ISIS_MASK_LSP_ISTYPE_BITS(header_lsp->typeblock)));
+
+ if (vflag > 1) {
+ if(!print_unknown_data(pptr,"\n\t ",ISIS_LSP_HEADER_SIZE))
+ return(0);
+ }
+
+ packet_len -= (ISIS_COMMON_HEADER_SIZE+ISIS_LSP_HEADER_SIZE);
+ pptr = p + (ISIS_COMMON_HEADER_SIZE+ISIS_LSP_HEADER_SIZE);
+ break;
+
+ case L1_CSNP:
+ case L2_CSNP:
+ if (header->fixed_len != (ISIS_COMMON_HEADER_SIZE+ISIS_CSNP_HEADER_SIZE)) {
+ printf(", bogus fixed header length %u should be %lu",
+ header->fixed_len, (unsigned long)ISIS_CSNP_HEADER_SIZE);
+ return (0);
+ }
projects / tcpdump / blobdiff