diff options
Diffstat (limited to 'isisd/isis_tlv.c')
| -rw-r--r-- | isisd/isis_tlv.c | 1565 |
1 files changed, 823 insertions, 742 deletions
diff --git a/isisd/isis_tlv.c b/isisd/isis_tlv.c index d7bbb914..a35b6878 100644 --- a/isisd/isis_tlv.c +++ b/isisd/isis_tlv.c @@ -48,58 +48,71 @@ extern struct isis *isis; void free_tlv (void *val) { - XFREE (MTYPE_ISIS_TLV, val); - - return; + XFREE (MTYPE_ISIS_TLV, val); + + return; } /* * Called after parsing of a PDU. There shouldn't be any tlv's left, so this * is only a caution to avoid memory leaks */ -void +void free_tlvs (struct tlvs *tlvs) { - if (tlvs->area_addrs) { - list_delete (tlvs->area_addrs); - } - if (tlvs->is_neighs) { - list_delete (tlvs->is_neighs); - } - if (tlvs->te_is_neighs) { - list_delete (tlvs->te_is_neighs); - } - if (tlvs->es_neighs) { - list_delete (tlvs->es_neighs); - } - if (tlvs->lsp_entries) { - list_delete (tlvs->lsp_entries); - } - if (tlvs->lan_neighs) { - list_delete (tlvs->lan_neighs); - } - if (tlvs->prefix_neighs) { - list_delete (tlvs->prefix_neighs); - } - if (tlvs->ipv4_addrs) { - list_delete (tlvs->ipv4_addrs); - } - if (tlvs->ipv4_int_reachs) { - list_delete (tlvs->ipv4_int_reachs); - } - if (tlvs->ipv4_ext_reachs) { - list_delete (tlvs->ipv4_ext_reachs); - } - if (tlvs->te_ipv4_reachs) { - list_delete (tlvs->te_ipv4_reachs); - } + if (tlvs->area_addrs) + { + list_delete (tlvs->area_addrs); + } + if (tlvs->is_neighs) + { + list_delete (tlvs->is_neighs); + } + if (tlvs->te_is_neighs) + { + list_delete (tlvs->te_is_neighs); + } + if (tlvs->es_neighs) + { + list_delete (tlvs->es_neighs); + } + if (tlvs->lsp_entries) + { + list_delete (tlvs->lsp_entries); + } + if (tlvs->lan_neighs) + { + list_delete (tlvs->lan_neighs); + } + if (tlvs->prefix_neighs) + { + list_delete (tlvs->prefix_neighs); + } + if (tlvs->ipv4_addrs) + { + list_delete (tlvs->ipv4_addrs); + } + if (tlvs->ipv4_int_reachs) + { + list_delete (tlvs->ipv4_int_reachs); + } + if (tlvs->ipv4_ext_reachs) + { + list_delete (tlvs->ipv4_ext_reachs); + } + if (tlvs->te_ipv4_reachs) + { + list_delete (tlvs->te_ipv4_reachs); + } #ifdef HAVE_IPV6 - if (tlvs->ipv6_addrs) { - list_delete (tlvs->ipv6_addrs); - } - if (tlvs->ipv6_reachs) { - list_delete (tlvs->ipv6_reachs); - } + if (tlvs->ipv6_addrs) + { + list_delete (tlvs->ipv6_addrs); + } + if (tlvs->ipv6_reachs) + { + list_delete (tlvs->ipv6_reachs); + } #endif /* HAVE_IPV6 */ return; } @@ -108,534 +121,584 @@ free_tlvs (struct tlvs *tlvs) * Parses the tlvs found in the variant length part of the PDU. * Caller tells with flags in "expected" which TLV's it is interested in. */ -int -parse_tlvs (char *areatag, u_char *stream, int size, u_int32_t *expected, - u_int32_t *found, struct tlvs *tlvs) +int +parse_tlvs (char *areatag, u_char * stream, int size, u_int32_t * expected, + u_int32_t * found, struct tlvs *tlvs) { - u_char type, length; - struct lan_neigh *lan_nei; - struct area_addr *area_addr; - struct is_neigh *is_nei; - struct te_is_neigh *te_is_nei; - struct es_neigh *es_nei; - struct lsp_entry *lsp_entry; - struct in_addr *ipv4_addr; - struct ipv4_reachability *ipv4_reach; - struct te_ipv4_reachability *te_ipv4_reach; + u_char type, length; + struct lan_neigh *lan_nei; + struct area_addr *area_addr; + struct is_neigh *is_nei; + struct te_is_neigh *te_is_nei; + struct es_neigh *es_nei; + struct lsp_entry *lsp_entry; + struct in_addr *ipv4_addr; + struct ipv4_reachability *ipv4_reach; + struct te_ipv4_reachability *te_ipv4_reach; #ifdef HAVE_IPV6 - struct in6_addr *ipv6_addr; - struct ipv6_reachability *ipv6_reach; - int prefix_octets; + struct in6_addr *ipv6_addr; + struct ipv6_reachability *ipv6_reach; + int prefix_octets; #endif /* HAVE_IPV6 */ - u_char virtual; - int value_len, retval = ISIS_OK; - u_char *pnt = stream; + u_char virtual; + int value_len, retval = ISIS_OK; + u_char *pnt = stream; *found = 0; memset (tlvs, 0, sizeof (struct tlvs)); - - while (pnt < stream + size - 2) { - type = *pnt; - length = *(pnt+1); - pnt += 2; - value_len = 0; - if ( pnt + length > stream + size ) { - zlog_warn ("ISIS-TLV (%s): TLV (type %d, length %d) exceeds packet " - "boundaries", areatag, type, length); - retval = ISIS_WARNING; - break; - } - switch (type) { - case AREA_ADDRESSES: - /* +-------+-------+-------+-------+-------+-------+-------+-------+ - * | Address Length | - * +-------+-------+-------+-------+-------+-------+-------+-------+ - * | Area Address | - * +-------+-------+-------+-------+-------+-------+-------+-------+ - * : : - */ - *found |= TLVFLAG_AREA_ADDRS; + + while (pnt < stream + size - 2) + { + type = *pnt; + length = *(pnt + 1); + pnt += 2; + value_len = 0; + if (pnt + length > stream + size) + { + zlog_warn ("ISIS-TLV (%s): TLV (type %d, length %d) exceeds packet " + "boundaries", areatag, type, length); + retval = ISIS_WARNING; + break; + } + switch (type) + { + case AREA_ADDRESSES: + /* +-------+-------+-------+-------+-------+-------+-------+-------+ + * | Address Length | + * +-------+-------+-------+-------+-------+-------+-------+-------+ + * | Area Address | + * +-------+-------+-------+-------+-------+-------+-------+-------+ + * : : + */ + *found |= TLVFLAG_AREA_ADDRS; #ifdef EXTREME_TLV_DEBUG - zlog_info ("TLV Area Adresses len %d", length); + zlog_info ("TLV Area Adresses len %d", length); #endif /* EXTREME_TLV_DEBUG */ - if (*expected & TLVFLAG_AREA_ADDRS) { - while (length > value_len) { - area_addr = (struct area_addr*)pnt; - value_len += area_addr->addr_len + 1; - pnt += area_addr->addr_len + 1; - if (!tlvs->area_addrs) tlvs->area_addrs = list_new (); - listnode_add (tlvs->area_addrs, area_addr); - } - } else { - pnt += length; - } - break; - - case IS_NEIGHBOURS: - *found |= TLVFLAG_IS_NEIGHS; + if (*expected & TLVFLAG_AREA_ADDRS) + { + while (length > value_len) + { + area_addr = (struct area_addr *) pnt; + value_len += area_addr->addr_len + 1; + pnt += area_addr->addr_len + 1; + if (!tlvs->area_addrs) + tlvs->area_addrs = list_new (); + listnode_add (tlvs->area_addrs, area_addr); + } + } + else + { + pnt += length; + } + break; + + case IS_NEIGHBOURS: + *found |= TLVFLAG_IS_NEIGHS; #ifdef EXTREME_TLV_DEBUG - zlog_info ("ISIS-TLV (%s): IS Neighbours length %d", - areatag, - length); + zlog_info ("ISIS-TLV (%s): IS Neighbours length %d", + areatag, length); #endif /* EXTREME_TLV_DEBUG */ - if (TLVFLAG_IS_NEIGHS & *expected) { - /* +-------+-------+-------+-------+-------+-------+-------+-------+ - * | Virtual Flag | - * +-------+-------+-------+-------+-------+-------+-------+-------+ - */ - virtual = *pnt; /* FIXME: what is the use for this? */ - pnt++; - value_len ++; - /* +-------+-------+-------+-------+-------+-------+-------+-------+ - * | 0 | I/E | Default Metric | - * +-------+-------+-------+-------+-------+-------+-------+-------+ - * | S | I/E | Delay Metric | - * +-------+-------+-------+-------+-------+-------+-------+-------+ - * | S | I/E | Expense Metric | - * +-------+-------+-------+-------+-------+-------+-------+-------+ - * | S | I/E | Error Metric | - * +-------+-------+-------+-------+-------+-------+-------+-------+ - * | Neighbour ID | - * +---------------------------------------------------------------+ - * : : - */ - while (length > value_len) { - is_nei = (struct is_neigh*)pnt; - value_len += 4 + ISIS_SYS_ID_LEN + 1; - pnt += 4 + ISIS_SYS_ID_LEN + 1; - if (!tlvs->is_neighs) tlvs->is_neighs = list_new (); - listnode_add (tlvs->is_neighs, is_nei); - } - } else { - pnt += length; - } - break; - - case TE_IS_NEIGHBOURS: - /* +-------+-------+-------+-------+-------+-------+-------+-------+ - * | Neighbour ID | 7 - * +---------------------------------------------------------------+ - * | TE Metric | 3 - * +---------------------------------------------------------------+ - * | SubTLVs Length | 1 - * +---------------------------------------------------------------+ - * : : - */ - *found |= TLVFLAG_TE_IS_NEIGHS; + if (TLVFLAG_IS_NEIGHS & *expected) + { + /* +-------+-------+-------+-------+-------+-------+-------+-------+ + * | Virtual Flag | + * +-------+-------+-------+-------+-------+-------+-------+-------+ + */ + virtual = *pnt; /* FIXME: what is the use for this? */ + pnt++; + value_len++; + /* +-------+-------+-------+-------+-------+-------+-------+-------+ + * | 0 | I/E | Default Metric | + * +-------+-------+-------+-------+-------+-------+-------+-------+ + * | S | I/E | Delay Metric | + * +-------+-------+-------+-------+-------+-------+-------+-------+ + * | S | I/E | Expense Metric | + * +-------+-------+-------+-------+-------+-------+-------+-------+ + * | S | I/E | Error Metric | + * +-------+-------+-------+-------+-------+-------+-------+-------+ + * | Neighbour ID | + * +---------------------------------------------------------------+ + * : : + */ + while (length > value_len) + { + is_nei = (struct is_neigh *) pnt; + value_len += 4 + ISIS_SYS_ID_LEN + 1; + pnt += 4 + ISIS_SYS_ID_LEN + 1; + if (!tlvs->is_neighs) + tlvs->is_neighs = list_new (); + listnode_add (tlvs->is_neighs, is_nei); + } + } + else + { + pnt += length; + } + break; + + case TE_IS_NEIGHBOURS: + /* +-------+-------+-------+-------+-------+-------+-------+-------+ + * | Neighbour ID | 7 + * +---------------------------------------------------------------+ + * | TE Metric | 3 + * +---------------------------------------------------------------+ + * | SubTLVs Length | 1 + * +---------------------------------------------------------------+ + * : : + */ + *found |= TLVFLAG_TE_IS_NEIGHS; #ifdef EXTREME_TLV_DEBUG - zlog_info ("ISIS-TLV (%s): Extended IS Neighbours length %d", - areatag, - length); + zlog_info ("ISIS-TLV (%s): Extended IS Neighbours length %d", + areatag, length); #endif /* EXTREME_TLV_DEBUG */ - if (TLVFLAG_TE_IS_NEIGHS & *expected) { - while (length > value_len) { - te_is_nei = (struct te_is_neigh*)pnt; - value_len += 11; - pnt += 11; - /* FIXME - subtlvs are handled here, for now we skip */ - value_len += te_is_nei->sub_tlvs_length; - pnt += te_is_nei->sub_tlvs_length; - - - if (!tlvs->te_is_neighs) tlvs->te_is_neighs = list_new (); - listnode_add (tlvs->te_is_neighs, te_is_nei); - } - } else { - pnt += length; - } - break; - - case ES_NEIGHBOURS: - /* +-------+-------+-------+-------+-------+-------+-------+-------+ - * | 0 | I/E | Default Metric | - * +-------+-------+-------+-------+-------+-------+-------+-------+ - * | S | I/E | Delay Metric | - * +-------+-------+-------+-------+-------+-------+-------+-------+ - * | S | I/E | Expense Metric | - * +-------+-------+-------+-------+-------+-------+-------+-------+ - * | S | I/E | Error Metric | - * +-------+-------+-------+-------+-------+-------+-------+-------+ - * | Neighbour ID | - * +---------------------------------------------------------------+ - * | Neighbour ID | - * +---------------------------------------------------------------+ - * : : - */ + if (TLVFLAG_TE_IS_NEIGHS & *expected) + { + while (length > value_len) + { + te_is_nei = (struct te_is_neigh *) pnt; + value_len += 11; + pnt += 11; + /* FIXME - subtlvs are handled here, for now we skip */ + value_len += te_is_nei->sub_tlvs_length; + pnt += te_is_nei->sub_tlvs_length; + + if (!tlvs->te_is_neighs) + tlvs->te_is_neighs = list_new (); + listnode_add (tlvs->te_is_neighs, te_is_nei); + } + } + else + { + pnt += length; + } + break; + + case ES_NEIGHBOURS: + /* +-------+-------+-------+-------+-------+-------+-------+-------+ + * | 0 | I/E | Default Metric | + * +-------+-------+-------+-------+-------+-------+-------+-------+ + * | S | I/E | Delay Metric | + * +-------+-------+-------+-------+-------+-------+-------+-------+ + * | S | I/E | Expense Metric | + * +-------+-------+-------+-------+-------+-------+-------+-------+ + * | S | I/E | Error Metric | + * +-------+-------+-------+-------+-------+-------+-------+-------+ + * | Neighbour ID | + * +---------------------------------------------------------------+ + * | Neighbour ID | + * +---------------------------------------------------------------+ + * : : + */ #ifdef EXTREME_TLV_DEBUG - zlog_info ("ISIS-TLV (%s): ES Neighbours length %d", - areatag, - length); + zlog_info ("ISIS-TLV (%s): ES Neighbours length %d", + areatag, length); #endif /* EXTREME_TLV_DEBUG */ - *found |= TLVFLAG_ES_NEIGHS; - if (*expected & TLVFLAG_ES_NEIGHS) { - es_nei = (struct es_neigh*)pnt; - value_len += 4; - pnt += 4; - while (length > value_len) { - /* FIXME FIXME FIXME - add to the list */ - /* sys_id->id = pnt;*/ - value_len += ISIS_SYS_ID_LEN; - pnt += ISIS_SYS_ID_LEN; - /* if (!es_nei->neigh_ids) es_nei->neigh_ids = sysid;*/ - } - if (!tlvs->es_neighs) tlvs->es_neighs = list_new (); - listnode_add (tlvs->es_neighs, es_nei); - } else { - pnt += length; - } - break; - - case LAN_NEIGHBOURS: - /* +-------+-------+-------+-------+-------+-------+-------+-------+ - * | LAN Address | - * +-------+-------+-------+-------+-------+-------+-------+-------+ - * : : - */ - *found |= TLVFLAG_LAN_NEIGHS; - #ifdef EXTREME_TLV_DEBUG - zlog_info ("ISIS-TLV (%s): LAN Neigbours length %d", - areatag, - length); - #endif /* EXTREME_TLV_DEBUG */ - if (TLVFLAG_LAN_NEIGHS & *expected) { - while (length > value_len) { - lan_nei = (struct lan_neigh*)pnt; - if (!tlvs->lan_neighs) tlvs->lan_neighs = list_new (); - listnode_add (tlvs->lan_neighs, lan_nei); - value_len += ETH_ALEN; - pnt += ETH_ALEN; - } - } else { - pnt += length; - } - break; - - case PADDING: + *found |= TLVFLAG_ES_NEIGHS; + if (*expected & TLVFLAG_ES_NEIGHS) + { + es_nei = (struct es_neigh *) pnt; + value_len += 4; + pnt += 4; + while (length > value_len) + { + /* FIXME FIXME FIXME - add to the list */ + /* sys_id->id = pnt; */ + value_len += ISIS_SYS_ID_LEN; + pnt += ISIS_SYS_ID_LEN; + /* if (!es_nei->neigh_ids) es_nei->neigh_ids = sysid; */ + } + if (!tlvs->es_neighs) + tlvs->es_neighs = list_new (); + listnode_add (tlvs->es_neighs, es_nei); + } + else + { + pnt += length; + } + break; + + case LAN_NEIGHBOURS: + /* +-------+-------+-------+-------+-------+-------+-------+-------+ + * | LAN Address | + * +-------+-------+-------+-------+-------+-------+-------+-------+ + * : : + */ + *found |= TLVFLAG_LAN_NEIGHS; #ifdef EXTREME_TLV_DEBUG - zlog_info ("TLV padding %d", length); + zlog_info ("ISIS-TLV (%s): LAN Neigbours length %d", + areatag, length); #endif /* EXTREME_TLV_DEBUG */ - pnt += length; - break; - - case LSP_ENTRIES: - /* +-------+-------+-------+-------+-------+-------+-------+-------+ - * | Remaining Lifetime | 2 - * +-------+-------+-------+-------+-------+-------+-------+-------+ - * | LSP ID | id+2 - * +-------+-------+-------+-------+-------+-------+-------+-------+ - * | LSP Sequence Number | 4 - * +-------+-------+-------+-------+-------+-------+-------+-------+ - * | Checksum | 2 - * +-------+-------+-------+-------+-------+-------+-------+-------+ - */ + if (TLVFLAG_LAN_NEIGHS & *expected) + { + while (length > value_len) + { + lan_nei = (struct lan_neigh *) pnt; + if (!tlvs->lan_neighs) + tlvs->lan_neighs = list_new (); + listnode_add (tlvs->lan_neighs, lan_nei); + value_len += ETH_ALEN; + pnt += ETH_ALEN; + } + } + else + { + pnt += length; + } + break; + + case PADDING: #ifdef EXTREME_TLV_DEBUG - zlog_info ("LSP Entries length %d", - areatag, - length); + zlog_info ("TLV padding %d", length); #endif /* EXTREME_TLV_DEBUG */ - *found |= TLVFLAG_LSP_ENTRIES; - if (TLVFLAG_LSP_ENTRIES & *expected) { - while (length > value_len) { - lsp_entry = (struct lsp_entry*)pnt; - value_len += 10 + ISIS_SYS_ID_LEN; - pnt += 10 + ISIS_SYS_ID_LEN; - if (!tlvs->lsp_entries) tlvs->lsp_entries = list_new (); - listnode_add (tlvs->lsp_entries, lsp_entry); - } - } else { - pnt += length; - } - break; - - case CHECKSUM: - /* +-------+-------+-------+-------+-------+-------+-------+-------+ - * | 16 bit fletcher CHECKSUM | - * +-------+-------+-------+-------+-------+-------+-------+-------+ - * : : - */ - *found |= TLVFLAG_CHECKSUM; + pnt += length; + break; + + case LSP_ENTRIES: + /* +-------+-------+-------+-------+-------+-------+-------+-------+ + * | Remaining Lifetime | 2 + * +-------+-------+-------+-------+-------+-------+-------+-------+ + * | LSP ID | id+2 + * +-------+-------+-------+-------+-------+-------+-------+-------+ + * | LSP Sequence Number | 4 + * +-------+-------+-------+-------+-------+-------+-------+-------+ + * | Checksum | 2 + * +-------+-------+-------+-------+-------+-------+-------+-------+ + */ #ifdef EXTREME_TLV_DEBUG - zlog_info ("ISIS-TLV (%s): Checksum length %d", - areatag, - length); + zlog_info ("LSP Entries length %d", areatag, length); #endif /* EXTREME_TLV_DEBUG */ - if (*expected & TLVFLAG_CHECKSUM) { - tlvs->checksum = (struct checksum*)pnt; - } - pnt += length; - break; - - case PROTOCOLS_SUPPORTED: - /* +-------+-------+-------+-------+-------+-------+-------+-------+ - * | NLPID | - * +-------+-------+-------+-------+-------+-------+-------+-------+ - * : : - */ - *found |= TLVFLAG_NLPID; + *found |= TLVFLAG_LSP_ENTRIES; + if (TLVFLAG_LSP_ENTRIES & *expected) + { + while (length > value_len) + { + lsp_entry = (struct lsp_entry *) pnt; + value_len += 10 + ISIS_SYS_ID_LEN; + pnt += 10 + ISIS_SYS_ID_LEN; + if (!tlvs->lsp_entries) + tlvs->lsp_entries = list_new (); + listnode_add (tlvs->lsp_entries, lsp_entry); + } + } + else + { + pnt += length; + } + break; + + case CHECKSUM: + /* +-------+-------+-------+-------+-------+-------+-------+-------+ + * | 16 bit fletcher CHECKSUM | + * +-------+-------+-------+-------+-------+-------+-------+-------+ + * : : + */ + *found |= TLVFLAG_CHECKSUM; #ifdef EXTREME_TLV_DEBUG - zlog_info ("ISIS-TLV (%s): Protocols Supported length %d", - areatag, - length); + zlog_info ("ISIS-TLV (%s): Checksum length %d", areatag, length); #endif /* EXTREME_TLV_DEBUG */ - if (*expected & TLVFLAG_NLPID) { - tlvs->nlpids = (struct nlpids*)(pnt-1); - } - pnt += length; - break; - - case IPV4_ADDR: - /* +-------+-------+-------+-------+-------+-------+-------+-------+ - * + IP version 4 address + 4 - * +-------+-------+-------+-------+-------+-------+-------+-------+ - * : : - */ - *found |= TLVFLAG_IPV4_ADDR; + if (*expected & TLVFLAG_CHECKSUM) + { + tlvs->checksum = (struct checksum *) pnt; + } + pnt += length; + break; + + case PROTOCOLS_SUPPORTED: + /* +-------+-------+-------+-------+-------+-------+-------+-------+ + * | NLPID | + * +-------+-------+-------+-------+-------+-------+-------+-------+ + * : : + */ + *found |= TLVFLAG_NLPID; #ifdef EXTREME_TLV_DEBUG - zlog_info ("ISIS-TLV (%s): IPv4 Address length %d", - areatag, - length); + zlog_info ("ISIS-TLV (%s): Protocols Supported length %d", + areatag, length); #endif /* EXTREME_TLV_DEBUG */ - if (*expected & TLVFLAG_IPV4_ADDR) { - while (length > value_len) { - ipv4_addr = (struct in_addr*)pnt; - zlog_info ("ISIS-TLV (%s) : IP ADDR %s, pnt %p", areatag, - inet_ntoa (*ipv4_addr), pnt); - if (!tlvs->ipv4_addrs) tlvs->ipv4_addrs = list_new(); - listnode_add (tlvs->ipv4_addrs, ipv4_addr); - value_len += 4; - pnt += 4; - } - } else { - pnt += length; - } - break; - - case AUTH_INFO: - *found |= TLVFLAG_AUTH_INFO; + if (*expected & TLVFLAG_NLPID) + { + tlvs->nlpids = (struct nlpids *) (pnt - 1); + } + pnt += length; + break; + + case IPV4_ADDR: + /* +-------+-------+-------+-------+-------+-------+-------+-------+ + * + IP version 4 address + 4 + * +-------+-------+-------+-------+-------+-------+-------+-------+ + * : : + */ + *found |= TLVFLAG_IPV4_ADDR; #ifdef EXTREME_TLV_DEBUG - zlog_info ("ISIS-TLV (%s): IS-IS Authentication Information", - areatag); + zlog_info ("ISIS-TLV (%s): IPv4 Address length %d", + areatag, length); +#endif /* EXTREME_TLV_DEBUG */ + if (*expected & TLVFLAG_IPV4_ADDR) + { + while (length > value_len) + { + ipv4_addr = (struct in_addr *) pnt; + zlog_info ("ISIS-TLV (%s) : IP ADDR %s, pnt %p", areatag, + inet_ntoa (*ipv4_addr), pnt); + if (!tlvs->ipv4_addrs) + tlvs->ipv4_addrs = list_new (); + listnode_add (tlvs->ipv4_addrs, ipv4_addr); + value_len += 4; + pnt += 4; + } + } + else + { + pnt += length; + } + break; + + case AUTH_INFO: + *found |= TLVFLAG_AUTH_INFO; +#ifdef EXTREME_TLV_DEBUG + zlog_info ("ISIS-TLV (%s): IS-IS Authentication Information", + areatag); #endif - if (*expected & TLVFLAG_AUTH_INFO) { - tlvs->auth_info.type = *pnt; - pnt++; - memcpy (tlvs->auth_info.passwd, pnt, length - 1); - pnt += length - 1; - } - else { - pnt += length; - } - break; - - case DYNAMIC_HOSTNAME: - *found |= TLVFLAG_DYN_HOSTNAME; + if (*expected & TLVFLAG_AUTH_INFO) + { + tlvs->auth_info.type = *pnt; + pnt++; + memcpy (tlvs->auth_info.passwd, pnt, length - 1); + pnt += length - 1; + } + else + { + pnt += length; + } + break; + + case DYNAMIC_HOSTNAME: + *found |= TLVFLAG_DYN_HOSTNAME; #ifdef EXTREME_TLV_DEBUG - zlog_info ("ISIS-TLV (%s): Dynamic Hostname length %d", - areatag, - length); + zlog_info ("ISIS-TLV (%s): Dynamic Hostname length %d", + areatag, length); #endif /* EXTREME_TLV_DEBUG */ - if (*expected & TLVFLAG_DYN_HOSTNAME) { - /* the length is also included in the pointed struct */ - tlvs->hostname = (struct hostname*)(pnt - 1); - } - pnt += length; - break; - - case TE_ROUTER_ID: - /* +---------------------------------------------------------------+ - * + Router ID + 4 - * +---------------------------------------------------------------+ - */ - *found |= TLVFLAG_TE_ROUTER_ID; + if (*expected & TLVFLAG_DYN_HOSTNAME) + { + /* the length is also included in the pointed struct */ + tlvs->hostname = (struct hostname *) (pnt - 1); + } + pnt += length; + break; + + case TE_ROUTER_ID: + /* +---------------------------------------------------------------+ + * + Router ID + 4 + * +---------------------------------------------------------------+ + */ + *found |= TLVFLAG_TE_ROUTER_ID; #ifdef EXTREME_TLV_DEBUG - zlog_info ("ISIS-TLV (%s): TE Router ID %d", - areatag, - length); + zlog_info ("ISIS-TLV (%s): TE Router ID %d", areatag, length); #endif /* EXTREME_TLV_DEBUG */ - if (*expected & TLVFLAG_TE_ROUTER_ID) { - tlvs->router_id = (struct te_router_id*)(pnt); - } - pnt += length; - break; - - case IPV4_INT_REACHABILITY: - /* +-------+-------+-------+-------+-------+-------+-------+-------+ - * | 0 | I/E | Default Metric | 1 - * +-------+-------+-------+-------+-------+-------+-------+-------+ - * | S | I/E | Delay Metric | 1 - * +-------+-------+-------+-------+-------+-------+-------+-------+ - * | S | I/E | Expense Metric | 1 - * +-------+-------+-------+-------+-------+-------+-------+-------+ - * | S | I/E | Error Metric | 1 - * +-------+-------+-------+-------+-------+-------+-------+-------+ - * | ip address | 4 - * +---------------------------------------------------------------+ - * | address mask | 4 - * +---------------------------------------------------------------+ - * : : - */ - *found |= TLVFLAG_IPV4_INT_REACHABILITY; + if (*expected & TLVFLAG_TE_ROUTER_ID) + { + tlvs->router_id = (struct te_router_id *) (pnt); + } + pnt += length; + break; + + case IPV4_INT_REACHABILITY: + /* +-------+-------+-------+-------+-------+-------+-------+-------+ + * | 0 | I/E | Default Metric | 1 + * +-------+-------+-------+-------+-------+-------+-------+-------+ + * | S | I/E | Delay Metric | 1 + * +-------+-------+-------+-------+-------+-------+-------+-------+ + * | S | I/E | Expense Metric | 1 + * +-------+-------+-------+-------+-------+-------+-------+-------+ + * | S | I/E | Error Metric | 1 + * +-------+-------+-------+-------+-------+-------+-------+-------+ + * | ip address | 4 + * +---------------------------------------------------------------+ + * | address mask | 4 + * +---------------------------------------------------------------+ + * : : + */ + *found |= TLVFLAG_IPV4_INT_REACHABILITY; #ifdef EXTREME_TLV_DEBUG - zlog_info ("ISIS-TLV (%s): IPv4 internal Reachability length %d", - areatag, - length); + zlog_info ("ISIS-TLV (%s): IPv4 internal Reachability length %d", + areatag, length); #endif /* EXTREME_TLV_DEBUG */ - if (*expected & TLVFLAG_IPV4_INT_REACHABILITY) { - while (length > value_len) { - ipv4_reach = (struct ipv4_reachability*)pnt; - if (!tlvs->ipv4_int_reachs) tlvs->ipv4_int_reachs = list_new(); - listnode_add (tlvs->ipv4_int_reachs, ipv4_reach); - value_len += 12; - pnt += 12; - } - } - else { - pnt += length; - } - break; - - case IPV4_EXT_REACHABILITY: - /* +-------+-------+-------+-------+-------+-------+-------+-------+ - * | 0 | I/E | Default Metric | 1 - * +-------+-------+-------+-------+-------+-------+-------+-------+ - * | S | I/E | Delay Metric | 1 - * +-------+-------+-------+-------+-------+-------+-------+-------+ - * | S | I/E | Expense Metric | 1 - * +-------+-------+-------+-------+-------+-------+-------+-------+ - * | S | I/E | Error Metric | 1 - * +-------+-------+-------+-------+-------+-------+-------+-------+ - * | ip address | 4 - * +---------------------------------------------------------------+ - * | address mask | 4 - * +---------------------------------------------------------------+ - * : : - */ - *found |= TLVFLAG_IPV4_EXT_REACHABILITY; + if (*expected & TLVFLAG_IPV4_INT_REACHABILITY) + { + while (length > value_len) + { + ipv4_reach = (struct ipv4_reachability *) pnt; + if (!tlvs->ipv4_int_reachs) + tlvs->ipv4_int_reachs = list_new (); + listnode_add (tlvs->ipv4_int_reachs, ipv4_reach); + value_len += 12; + pnt += 12; + } + } + else + { + pnt += length; + } + break; + + case IPV4_EXT_REACHABILITY: + /* +-------+-------+-------+-------+-------+-------+-------+-------+ + * | 0 | I/E | Default Metric | 1 + * +-------+-------+-------+-------+-------+-------+-------+-------+ + * | S | I/E | Delay Metric | 1 + * +-------+-------+-------+-------+-------+-------+-------+-------+ + * | S | I/E | Expense Metric | 1 + * +-------+-------+-------+-------+-------+-------+-------+-------+ + * | S | I/E | Error Metric | 1 + * +-------+-------+-------+-------+-------+-------+-------+-------+ + * | ip address | 4 + * +---------------------------------------------------------------+ + * | address mask | 4 + * +---------------------------------------------------------------+ + * : : + */ + *found |= TLVFLAG_IPV4_EXT_REACHABILITY; #ifdef EXTREME_TLV_DEBUG - zlog_info ("ISIS-TLV (%s): IPv4 external Reachability length %d", - areatag, - length); + zlog_info ("ISIS-TLV (%s): IPv4 external Reachability length %d", + areatag, length); #endif /* EXTREME_TLV_DEBUG */ - if (*expected & TLVFLAG_IPV4_EXT_REACHABILITY) { - while (length > value_len) { - ipv4_reach = (struct ipv4_reachability*)pnt; - if (!tlvs->ipv4_ext_reachs) - tlvs->ipv4_ext_reachs = list_new(); - listnode_add (tlvs->ipv4_ext_reachs, ipv4_reach); - value_len += 12; - pnt += 12; - } - } - else { - pnt += length; - } - break; - - case TE_IPV4_REACHABILITY: - /* +-------+-------+-------+-------+-------+-------+-------+-------+ - * | TE Metric | 4 - * +-------+-------+-------+-------+-------+-------+-------+-------+ - * | U/D | sTLV? | Prefix Mask Len | 1 - * +-------+-------+-------+-------+-------+-------+-------+-------+ - * | Prefix | 0-4 - * +---------------------------------------------------------------+ - * | sub tlvs | - * +---------------------------------------------------------------+ - * : : - */ - *found |= TLVFLAG_TE_IPV4_REACHABILITY; + if (*expected & TLVFLAG_IPV4_EXT_REACHABILITY) + { + while (length > value_len) + { + ipv4_reach = (struct ipv4_reachability *) pnt; + if (!tlvs->ipv4_ext_reachs) + tlvs->ipv4_ext_reachs = list_new (); + listnode_add (tlvs->ipv4_ext_reachs, ipv4_reach); + value_len += 12; + pnt += 12; + } + } + else + { + pnt += length; + } + break; + + case TE_IPV4_REACHABILITY: + /* +-------+-------+-------+-------+-------+-------+-------+-------+ + * | TE Metric | 4 + * +-------+-------+-------+-------+-------+-------+-------+-------+ + * | U/D | sTLV? | Prefix Mask Len | 1 + * +-------+-------+-------+-------+-------+-------+-------+-------+ + * | Prefix | 0-4 + * +---------------------------------------------------------------+ + * | sub tlvs | + * +---------------------------------------------------------------+ + * : : + */ + *found |= TLVFLAG_TE_IPV4_REACHABILITY; #ifdef EXTREME_TLV_DEBUG - zlog_info ("ISIS-TLV (%s): IPv4 extended Reachability length %d", - areatag, - length); + zlog_info ("ISIS-TLV (%s): IPv4 extended Reachability length %d", + areatag, length); #endif /* EXTREME_TLV_DEBUG */ - if (*expected & TLVFLAG_TE_IPV4_REACHABILITY) { - while (length > value_len) { - te_ipv4_reach = (struct te_ipv4_reachability*)pnt; - if (!tlvs->te_ipv4_reachs) tlvs->te_ipv4_reachs = list_new(); - listnode_add (tlvs->te_ipv4_reachs, te_ipv4_reach); - /* this trickery is permitable since no subtlvs are defined */ - value_len += 5 + ((te_ipv4_reach->control & 0x3F) ? - ((((te_ipv4_reach->control & 0x3F)-1)>>3)+1) : 0); - pnt += 5 + ((te_ipv4_reach->control & 0x3F) ? - ((((te_ipv4_reach->control & 0x3F)-1)>>3)+1) : 0); - } - } - else { - pnt += length; - } - break; + if (*expected & TLVFLAG_TE_IPV4_REACHABILITY) + { + while (length > value_len) + { + te_ipv4_reach = (struct te_ipv4_reachability *) pnt; + if (!tlvs->te_ipv4_reachs) + tlvs->te_ipv4_reachs = list_new (); + listnode_add (tlvs->te_ipv4_reachs, te_ipv4_reach); + /* this trickery is permitable since no subtlvs are defined */ + value_len += 5 + ((te_ipv4_reach->control & 0x3F) ? + ((((te_ipv4_reach->control & 0x3F) - + 1) >> 3) + 1) : 0); + pnt += 5 + ((te_ipv4_reach->control & 0x3F) ? + ((((te_ipv4_reach->control & 0x3F) - 1) >> 3) + 1) : 0); + } + } + else + { + pnt += length; + } + break; #ifdef HAVE_IPV6 - case IPV6_ADDR: - /* +-------+-------+-------+-------+-------+-------+-------+-------+ - * + IP version 6 address + 16 - * +-------+-------+-------+-------+-------+-------+-------+-------+ - * : : - */ - *found |= TLVFLAG_IPV6_ADDR; + case IPV6_ADDR: + /* +-------+-------+-------+-------+-------+-------+-------+-------+ + * + IP version 6 address + 16 + * +-------+-------+-------+-------+-------+-------+-------+-------+ + * : : + */ + *found |= TLVFLAG_IPV6_ADDR; #ifdef EXTREME_TLV_DEBUG - zlog_info ("ISIS-TLV (%s): IPv6 Address length %d", - areatag, - length); + zlog_info ("ISIS-TLV (%s): IPv6 Address length %d", + areatag, length); #endif /* EXTREME_TLV_DEBUG */ - if (*expected & TLVFLAG_IPV6_ADDR) { - while (length > value_len) { - ipv6_addr = (struct in6_addr*)pnt; - if (!tlvs->ipv6_addrs) tlvs->ipv6_addrs = list_new(); - listnode_add (tlvs->ipv6_addrs, ipv6_addr); - value_len += 16; - pnt += 16; - } - } else { - pnt += length; - } - break; - - case IPV6_REACHABILITY: - /* +-------+-------+-------+-------+-------+-------+-------+-------+ - * | Default Metric | 4 - * +-------+-------+-------+-------+-------+-------+-------+-------+ - * | Control Informantion | - * +---------------------------------------------------------------+ - * | IPv6 Prefix Length |--+ - * +---------------------------------------------------------------+ | - * | IPv6 Prefix |<-+ - * +---------------------------------------------------------------+ - */ - *found |= TLVFLAG_IPV6_REACHABILITY; - if (*expected & TLVFLAG_IPV6_REACHABILITY) { - while (length > value_len) { - ipv6_reach = (struct ipv6_reachability*)pnt; - prefix_octets = ((ipv6_reach->prefix_len + 7) / 8); - value_len += prefix_octets + 6; - pnt += prefix_octets + 6; - /* FIXME: sub-tlvs */ - if (!tlvs->ipv6_reachs) tlvs->ipv6_reachs = list_new(); - listnode_add (tlvs->ipv6_reachs, ipv6_reach); - } - } else { - pnt += length; - } - break; + if (*expected & TLVFLAG_IPV6_ADDR) + { + while (length > value_len) + { + ipv6_addr = (struct in6_addr *) pnt; + if (!tlvs->ipv6_addrs) + tlvs->ipv6_addrs = list_new (); + listnode_add (tlvs->ipv6_addrs, ipv6_addr); + value_len += 16; + pnt += 16; + } + } + else + { + pnt += length; + } + break; + + case IPV6_REACHABILITY: + /* +-------+-------+-------+-------+-------+-------+-------+-------+ + * | Default Metric | 4 + * +-------+-------+-------+-------+-------+-------+-------+-------+ + * | Control Informantion | + * +---------------------------------------------------------------+ + * | IPv6 Prefix Length |--+ + * +---------------------------------------------------------------+ | + * | IPv6 Prefix |<-+ + * +---------------------------------------------------------------+ + */ + *found |= TLVFLAG_IPV6_REACHABILITY; + if (*expected & TLVFLAG_IPV6_REACHABILITY) + { + while (length > value_len) + { + ipv6_reach = (struct ipv6_reachability *) pnt; + prefix_octets = ((ipv6_reach->prefix_len + 7) / 8); + value_len += prefix_octets + 6; + pnt += prefix_octets + 6; + /* FIXME: sub-tlvs */ + if (!tlvs->ipv6_reachs) + tlvs->ipv6_reachs = list_new (); + listnode_add (tlvs->ipv6_reachs, ipv6_reach); + } + } + else + { + pnt += length; + } + break; #endif /* HAVE_IPV6 */ - case WAY3_HELLO: - /* +---------------------------------------------------------------+ - * | Adjacency state | 1 - * +---------------------------------------------------------------+ - * | Extended Local Circuit ID | 4 - * +---------------------------------------------------------------+ - * | Neighbor System ID (If known) | 0-8 - * (probably 6) - * +---------------------------------------------------------------+ - * | Neighbor Local Circuit ID (If known) | 4 - * +---------------------------------------------------------------+ - */ - *found |= TLVFLAG_3WAY_HELLO; - if (*expected & TLVFLAG_3WAY_HELLO) { - while (length > value_len) { - /* FIXME: make this work */ + case WAY3_HELLO: + /* +---------------------------------------------------------------+ + * | Adjacency state | 1 + * +---------------------------------------------------------------+ + * | Extended Local Circuit ID | 4 + * +---------------------------------------------------------------+ + * | Neighbor System ID (If known) | 0-8 + * (probably 6) + * +---------------------------------------------------------------+ + * | Neighbor Local Circuit ID (If known) | 4 + * +---------------------------------------------------------------+ + */ + *found |= TLVFLAG_3WAY_HELLO; + if (*expected & TLVFLAG_3WAY_HELLO) + { + while (length > value_len) + { + /* FIXME: make this work */ /* Adjacency State (one octet): 0 = Up 1 = Initializing @@ -644,56 +707,58 @@ parse_tlvs (char *areatag, u_char *stream, int size, u_int32_t *expected, Neighbor System ID if known (zero to eight octets) Neighbor Extended Local Circuit ID (four octets, if Neighbor System ID is present) */ - pnt += length; - } - } else { - pnt += length; - } - - break; - case GRACEFUL_RESTART: - /* +-------+-------+-------+-------+-------+-------+-------+-------+ - * | Reserved | SA | RA | RR | 1 - * +-------+-------+-------+-------+-------+-------+-------+-------+ - * | Remaining Time | 2 - * +---------------------------------------------------------------+ - * | Restarting Neighbor ID (If known) | 0-8 - * +---------------------------------------------------------------+ - */ - *found |= TLVFLAG_GRACEFUL_RESTART; - if (*expected & TLVFLAG_GRACEFUL_RESTART) { - /* FIXME: make this work */ - } - pnt += length; - break; - - default: - zlog_warn ("ISIS-TLV (%s): unsupported TLV type %d, length %d", - areatag, - type, - length); - - retval = ISIS_WARNING; - pnt += length; - break; + pnt += length; + } + } + else + { + pnt += length; + } + + break; + case GRACEFUL_RESTART: + /* +-------+-------+-------+-------+-------+-------+-------+-------+ + * | Reserved | SA | RA | RR | 1 + * +-------+-------+-------+-------+-------+-------+-------+-------+ + * | Remaining Time | 2 + * +---------------------------------------------------------------+ + * | Restarting Neighbor ID (If known) | 0-8 + * +---------------------------------------------------------------+ + */ + *found |= TLVFLAG_GRACEFUL_RESTART; + if (*expected & TLVFLAG_GRACEFUL_RESTART) + { + /* FIXME: make this work */ + } + pnt += length; + break; + + default: + zlog_warn ("ISIS-TLV (%s): unsupported TLV type %d, length %d", + areatag, type, length); + + retval = ISIS_WARNING; + pnt += length; + break; + } } - } - + return retval; } int -add_tlv (u_char tag, u_char len, u_char *value, struct stream *stream) +add_tlv (u_char tag, u_char len, u_char * value, struct stream *stream) { - if (STREAM_SIZE (stream) - stream_get_putp (stream) < len + 2) { - zlog_warn ("No room for TLV of type %d", tag); - return ISIS_WARNING; - } + if (STREAM_SIZE (stream) - stream_get_putp (stream) < len + 2) + { + zlog_warn ("No room for TLV of type %d", tag); + return ISIS_WARNING; + } - stream_putc (stream, tag); /* TAG */ - stream_putc (stream, len); /* LENGTH */ - stream_put (stream, value, (int)len); /* VALUE */ + stream_putc (stream, tag); /* TAG */ + stream_putc (stream, len); /* LENGTH */ + stream_put (stream, value, (int) len); /* VALUE */ #ifdef EXTREME_DEBUG zlog_info ("Added TLV %d len %d", tag, len); @@ -701,93 +766,96 @@ add_tlv (u_char tag, u_char len, u_char *value, struct stream *stream) return ISIS_OK; } - int -tlv_add_area_addrs (struct list *area_addrs, struct stream *stream) +tlv_add_area_addrs (struct list *area_addrs, struct stream *stream) { struct listnode *node; struct area_addr *area_addr; - u_char value [255]; + u_char value[255]; u_char *pos = value; - - for (node = listhead (area_addrs); node; nextnode (node)) { - area_addr = getdata (node); - if (pos - value + area_addr->addr_len > 255) - goto err; - *pos = area_addr->addr_len; - pos ++; - memcpy (pos, area_addr->area_addr, (int)area_addr->addr_len); - pos += area_addr->addr_len; - } - + + for (node = listhead (area_addrs); node; nextnode (node)) + { + area_addr = getdata (node); + if (pos - value + area_addr->addr_len > 255) + goto err; + *pos = area_addr->addr_len; + pos++; + memcpy (pos, area_addr->area_addr, (int) area_addr->addr_len); + pos += area_addr->addr_len; + } + return add_tlv (AREA_ADDRESSES, pos - value, value, stream); - err: +err: zlog_warn ("tlv_add_area_addrs(): TLV longer than 255"); return ISIS_WARNING; } -int tlv_add_is_neighs (struct list *is_neighs, struct stream *stream) +int +tlv_add_is_neighs (struct list *is_neighs, struct stream *stream) { struct listnode *node; struct is_neigh *is_neigh; - u_char value [255]; + u_char value[255]; u_char *pos = value; int retval; - *pos = 0; /*is_neigh->virtual; */ - pos ++; + *pos = 0; /*is_neigh->virtual; */ + pos++; - for (node = listhead (is_neighs); node; nextnode (node)) { - is_neigh = getdata (node); - if (pos - value + IS_NEIGHBOURS_LEN > 255) { - retval = add_tlv (IS_NEIGHBOURS, pos - value, value, stream); - if (retval != ISIS_OK) - return retval; - pos = value; + for (node = listhead (is_neighs); node; nextnode (node)) + { + is_neigh = getdata (node); + if (pos - value + IS_NEIGHBOURS_LEN > 255) + { + retval = add_tlv (IS_NEIGHBOURS, pos - value, value, stream); + if (retval != ISIS_OK) + return retval; + pos = value; + } + *pos = is_neigh->metrics.metric_default; + pos++; + *pos = is_neigh->metrics.metric_delay; + pos++; + *pos = is_neigh->metrics.metric_expense; + pos++; + *pos = is_neigh->metrics.metric_error; + pos++; + memcpy (pos, is_neigh->neigh_id, ISIS_SYS_ID_LEN + 1); + pos += ISIS_SYS_ID_LEN + 1; } - *pos = is_neigh->metrics.metric_default; - pos ++; - *pos = is_neigh->metrics.metric_delay; - pos ++; - *pos = is_neigh->metrics.metric_expense; - pos ++; - *pos = is_neigh->metrics.metric_error; - pos ++; - memcpy (pos, is_neigh->neigh_id, ISIS_SYS_ID_LEN + 1); - pos += ISIS_SYS_ID_LEN + 1; - } return add_tlv (IS_NEIGHBOURS, pos - value, value, stream); } - int tlv_add_lan_neighs (struct list *lan_neighs, struct stream *stream) { struct listnode *node; u_char *snpa; - u_char value [255]; + u_char value[255]; u_char *pos = value; int retval; - for (node = listhead (lan_neighs); node; nextnode (node)) { - snpa = getdata (node); - if (pos - value + ETH_ALEN > 255) { - retval = add_tlv (LAN_NEIGHBOURS, pos - value, value, stream); - if (retval != ISIS_OK) - return retval; - pos = value; + for (node = listhead (lan_neighs); node; nextnode (node)) + { + snpa = getdata (node); + if (pos - value + ETH_ALEN > 255) + { + retval = add_tlv (LAN_NEIGHBOURS, pos - value, value, stream); + if (retval != ISIS_OK) + return retval; + pos = value; + } + memcpy (pos, snpa, ETH_ALEN); + pos += ETH_ALEN; } - memcpy (pos, snpa, ETH_ALEN); - pos += ETH_ALEN; - } return add_tlv (LAN_NEIGHBOURS, pos - value, value, stream); } - /* u_char value[255]; u_char *pos = value; @@ -805,13 +873,13 @@ tlv_add_lan_neighs (struct list *lan_neighs, struct stream *stream) int tlv_add_nlpid (struct nlpids *nlpids, struct stream *stream) { - - return add_tlv (PROTOCOLS_SUPPORTED, nlpids->count, - nlpids->nlpids, stream); + + return add_tlv (PROTOCOLS_SUPPORTED, nlpids->count, nlpids->nlpids, stream); } -int tlv_add_authinfo (char auth_type, char auth_len, char *auth_value, - struct stream *stream) +int +tlv_add_authinfo (char auth_type, char auth_len, char *auth_value, + struct stream *stream) { u_char value[255]; u_char *pos = value; @@ -825,9 +893,8 @@ int tlv_add_checksum (struct checksum *checksum, struct stream *stream) { u_char value[255]; - u_char *pos = value; - return add_tlv (CHECKSUM, pos - value, - value, stream); + u_char *pos = value; + return add_tlv (CHECKSUM, pos - value, value, stream); } int @@ -839,93 +906,101 @@ tlv_add_ip_addrs (struct list *ip_addrs, struct stream *stream) u_char *pos = value; int retval; - for (node = listhead (ip_addrs); node; nextnode (node)) { - ipv4 = getdata (node); - if (pos - value + IPV4_MAX_BYTELEN > 255) { - retval = add_tlv (IPV4_ADDR, pos - value, value, stream); - if (retval != ISIS_OK) - return retval; - pos = value; + for (node = listhead (ip_addrs); node; nextnode (node)) + { + ipv4 = getdata (node); + if (pos - value + IPV4_MAX_BYTELEN > 255) + { + retval = add_tlv (IPV4_ADDR, pos - value, value, stream); + if (retval != ISIS_OK) + return retval; + pos = value; + } + *(u_int32_t *) pos = ipv4->prefix.s_addr; + pos += IPV4_MAX_BYTELEN; } - *(u_int32_t*)pos = ipv4->prefix.s_addr; - pos += IPV4_MAX_BYTELEN; - } - + return add_tlv (IPV4_ADDR, pos - value, value, stream); } int tlv_add_dynamic_hostname (struct hostname *hostname, struct stream *stream) { - return add_tlv (DYNAMIC_HOSTNAME, hostname->namelen, hostname->name, stream); + return add_tlv (DYNAMIC_HOSTNAME, hostname->namelen, hostname->name, + stream); } -int +int tlv_add_lsp_entries (struct list *lsps, struct stream *stream) { struct listnode *node; struct isis_lsp *lsp; - u_char value [255]; + u_char value[255]; u_char *pos = value; int retval; - for (node = listhead (lsps); node; nextnode (node)) { - lsp = getdata (node); - if (pos - value + LSP_ENTRIES_LEN > 255) { - retval = add_tlv (LSP_ENTRIES, pos - value, value, stream); - if (retval != ISIS_OK) - return retval; - pos = value; + for (node = listhead (lsps); node; nextnode (node)) + { + lsp = getdata (node); + if (pos - value + LSP_ENTRIES_LEN > 255) + { + retval = add_tlv (LSP_ENTRIES, pos - value, value, stream); + if (retval != ISIS_OK) + return retval; + pos = value; + } + *((u_int16_t *) pos) = lsp->lsp_header->rem_lifetime; + pos += 2; + memcpy (pos, lsp->lsp_header->lsp_id, ISIS_SYS_ID_LEN + 2); + pos += ISIS_SYS_ID_LEN + 2; + *((u_int32_t *) pos) = lsp->lsp_header->seq_num; + pos += 4; + *((u_int16_t *) pos) = lsp->lsp_header->checksum; + pos += 2; } - *((u_int16_t*)pos) = lsp->lsp_header->rem_lifetime; - pos += 2; - memcpy (pos, lsp->lsp_header->lsp_id, ISIS_SYS_ID_LEN + 2); - pos += ISIS_SYS_ID_LEN + 2; - *((u_int32_t*)pos) = lsp->lsp_header->seq_num; - pos += 4; - *((u_int16_t*)pos) = lsp->lsp_header->checksum; - pos += 2; - } - + return add_tlv (LSP_ENTRIES, pos - value, value, stream); } -int +int tlv_add_ipv4_reachs (struct list *ipv4_reachs, struct stream *stream) { struct listnode *node; struct ipv4_reachability *reach; - u_char value [255]; + u_char value[255]; u_char *pos = value; int retval; - for (node = listhead (ipv4_reachs); node; nextnode (node)) { - reach = getdata (node); - if (pos - value + IPV4_REACH_LEN > 255) { - retval = add_tlv (IPV4_INT_REACHABILITY, pos - value, value, stream); - if (retval != ISIS_OK) - return retval; - pos = value; + for (node = listhead (ipv4_reachs); node; nextnode (node)) + { + reach = getdata (node); + if (pos - value + IPV4_REACH_LEN > 255) + { + retval = + add_tlv (IPV4_INT_REACHABILITY, pos - value, value, stream); + if (retval != ISIS_OK) + return retval; + pos = value; + } + *pos = reach->metrics.metric_default; + pos++; + *pos = reach->metrics.metric_delay; + pos++; + *pos = reach->metrics.metric_expense; + pos++; + *pos = reach->metrics.metric_error; + pos++; + *(u_int32_t *) pos = reach->prefix.s_addr; + pos += IPV4_MAX_BYTELEN; + *(u_int32_t *) pos = reach->mask.s_addr; + pos += IPV4_MAX_BYTELEN; } - *pos = reach->metrics.metric_default; - pos ++; - *pos = reach->metrics.metric_delay; - pos ++; - *pos = reach->metrics.metric_expense; - pos ++; - *pos = reach->metrics.metric_error; - pos ++; - *(u_int32_t*)pos = reach->prefix.s_addr; - pos += IPV4_MAX_BYTELEN; - *(u_int32_t*)pos = reach->mask.s_addr; - pos += IPV4_MAX_BYTELEN; - } - - + + return add_tlv (IPV4_INT_REACHABILITY, pos - value, value, stream); } -#ifdef HAVE_IPV6 +#ifdef HAVE_IPV6 int tlv_add_ipv6_addrs (struct list *ipv6_addrs, struct stream *stream) { @@ -934,19 +1009,21 @@ tlv_add_ipv6_addrs (struct list *ipv6_addrs, struct stream *stream) u_char value[255]; u_char *pos = value; int retval; - - for (node = listhead (ipv6_addrs); node; nextnode (node)) { - ipv6 = getdata (node); - if (pos - value + IPV6_MAX_BYTELEN > 255) { - retval = add_tlv (IPV6_ADDR, pos - value, value, stream); - if (retval != ISIS_OK) - return retval; - pos = value; + + for (node = listhead (ipv6_addrs); node; nextnode (node)) + { + ipv6 = getdata (node); + if (pos - value + IPV6_MAX_BYTELEN > 255) + { + retval = add_tlv (IPV6_ADDR, pos - value, value, stream); + if (retval != ISIS_OK) + return retval; + pos = value; + } + memcpy (pos, ipv6->prefix.s6_addr, IPV6_MAX_BYTELEN); + pos += IPV6_MAX_BYTELEN; } - memcpy (pos, ipv6->prefix.s6_addr, IPV6_MAX_BYTELEN); - pos += IPV6_MAX_BYTELEN; - } - + return add_tlv (IPV6_ADDR, pos - value, value, stream); } @@ -958,26 +1035,28 @@ tlv_add_ipv6_reachs (struct list *ipv6_reachs, struct stream *stream) u_char value[255]; u_char *pos = value; int retval, prefix_octets; - - for (node = listhead (ipv6_reachs); node; nextnode (node)) { - ip6reach = getdata (node); - if (pos - value + IPV6_MAX_BYTELEN + 6 > 255) { - retval = add_tlv (IPV6_REACHABILITY, pos - value, value, stream); - if (retval != ISIS_OK) - return retval; - pos = value; + + for (node = listhead (ipv6_reachs); node; nextnode (node)) + { + ip6reach = getdata (node); + if (pos - value + IPV6_MAX_BYTELEN + 6 > 255) + { + retval = add_tlv (IPV6_REACHABILITY, pos - value, value, stream); + if (retval != ISIS_OK) + return retval; + pos = value; + } + *(uint32_t *) pos = ip6reach->metric; + pos += 4; + *pos = ip6reach->control_info; + pos++; + prefix_octets = ((ip6reach->prefix_len + 7) / 8); + *pos = ip6reach->prefix_len; + pos++; + memcpy (pos, ip6reach->prefix, prefix_octets); + pos += prefix_octets; } - *(uint32_t*)pos = ip6reach->metric; - pos += 4; - *pos = ip6reach->control_info; - pos++; - prefix_octets = ((ip6reach->prefix_len + 7) / 8); - *pos = ip6reach->prefix_len; - pos++; - memcpy (pos, ip6reach->prefix, prefix_octets); - pos += prefix_octets; - } - + return add_tlv (IPV6_REACHABILITY, pos - value, value, stream); } #endif /* HAVE_IPV6 */ @@ -986,36 +1065,38 @@ int tlv_add_padding (struct stream *stream) { unsigned long putp, endp; - int fullpads, i, left; - + int fullpads, i, left; + /* * How many times can we add full padding ? */ - fullpads = (STREAM_SIZE(stream) - stream_get_endp (stream)) / 257; - for (i = 0; i < fullpads; i ++) { - if (!stream_putc (stream, (u_char)PADDING)) /* TAG */ - goto err; - if (!stream_putc (stream, (u_char)255)) /* LENGHT */ - goto err; - endp = stream_get_endp (stream); - putp = stream_get_putp (stream); - if (putp != endp) - zlog_warn ("tvl_add_padding endp %ld while putp %ld", endp, putp); - stream_set_putp (stream, putp + 255); /* VALUE */ - stream->endp = stream->putp; - } - - left = STREAM_SIZE(stream) - stream_get_putp (stream); - + fullpads = (STREAM_SIZE (stream) - stream_get_endp (stream)) / 257; + for (i = 0; i < fullpads; i++) + { + if (!stream_putc (stream, (u_char) PADDING)) /* TAG */ + goto err; + if (!stream_putc (stream, (u_char) 255)) /* LENGHT */ + goto err; + endp = stream_get_endp (stream); + putp = stream_get_putp (stream); + if (putp != endp) + zlog_warn ("tvl_add_padding endp %ld while putp %ld", endp, putp); + stream_set_putp (stream, putp + 255); /* VALUE */ + stream->endp = stream->putp; + } + + left = STREAM_SIZE (stream) - stream_get_putp (stream); + if (left < 2) return ISIS_OK; - - if (left == 2) { - stream_putc (stream, PADDING); - stream_putc (stream, 0); - return ISIS_OK; - } - + + if (left == 2) + { + stream_putc (stream, PADDING); + stream_putc (stream, 0); + return ISIS_OK; + } + stream_putc (stream, PADDING); stream_putc (stream, left - 2); stream_set_putp (stream, stream_get_putp (stream) + left - 2); @@ -1023,7 +1104,7 @@ tlv_add_padding (struct stream *stream) return ISIS_OK; - err: +err: zlog_warn ("tlv_add_padding(): no room for tlv"); return ISIS_WARNING; } |