Initial revision
diff --git a/isisd/isis_lsp.c b/isisd/isis_lsp.c
new file mode 100644
index 0000000..6bfb0fd
--- /dev/null
+++ b/isisd/isis_lsp.c
@@ -0,0 +1,2419 @@
+/*
+ * IS-IS Rout(e)ing protocol - isis_lsp.c
+ * LSP processing
+ *
+ * Copyright (C) 2001,2002 Sampo Saaristo
+ * Tampere University of Technology
+ * Institute of Communications Engineering
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public Licenseas published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+#include <stdlib.h>
+#include <stdio.h>
+#include <zebra.h>
+#include <net/ethernet.h>
+
+#include "linklist.h"
+#include "thread.h"
+#include "vty.h"
+#include "stream.h"
+#include "memory.h"
+#include "log.h"
+#include "prefix.h"
+#include "command.h"
+#include "hash.h"
+#include "if.h"
+
+#include "isisd/dict.h"
+#include "isisd/isis_constants.h"
+#include "isisd/isis_common.h"
+#include "isisd/isis_circuit.h"
+#include "isisd/isisd.h"
+#include "isisd/isis_tlv.h"
+#include "isisd/isis_lsp.h"
+#include "isisd/isis_pdu.h"
+#include "isisd/isis_dynhn.h"
+#include "isisd/isis_misc.h"
+#include "isisd/isis_flags.h"
+#include "isisd/iso_checksum.h"
+#include "isisd/isis_csm.h"
+#include "isisd/isis_adjacency.h"
+#include "isisd/isis_spf.h"
+
+#ifdef TOPOLOGY_GENERATE
+#include "spgrid.h"
+#endif
+
+#define LSP_MEMORY_PREASSIGN
+
+extern struct isis *isis;
+extern struct thread_master *master;
+extern struct host host;
+
+int
+lsp_id_cmp (u_char *id1, u_char *id2)
+{
+ return memcmp (id1, id2, ISIS_SYS_ID_LEN + 2);
+}
+
+dict_t *
+lsp_db_init (void)
+{
+ dict_t *dict;
+
+ dict = dict_create (DICTCOUNT_T_MAX, (dict_comp_t)lsp_id_cmp);
+
+ return dict;
+}
+
+struct isis_lsp *
+lsp_search (u_char *id, dict_t *lspdb)
+{
+ dnode_t *node;
+
+#ifdef EXTREME_DEBUG
+ dnode_t *dn;
+
+ zlog_warn("searching db");
+ for (dn = dict_first(lspdb); dn; dn = dict_next(lspdb, dn)) {
+ zlog_warn("%s\t%pX", rawlspid_print((char *) dnode_getkey(dn)),
+ dnode_get(dn));
+ }
+#endif /* EXTREME DEBUG */
+
+ node = dict_lookup (lspdb, id);
+
+ if (node)
+ return (struct isis_lsp *)dnode_get (node);
+
+ return NULL;
+}
+
+void
+lsp_clear_data (struct isis_lsp *lsp)
+{
+ if (!lsp)
+ return;
+
+ if (lsp->own_lsp) {
+ if (lsp->tlv_data.nlpids)
+ XFREE (MTYPE_ISIS_TLV, lsp->tlv_data.nlpids);
+ if (lsp->tlv_data.hostname)
+ XFREE (MTYPE_ISIS_TLV, lsp->tlv_data.hostname);
+ }
+ if (lsp->tlv_data.is_neighs)
+ list_delete (lsp->tlv_data.is_neighs);
+ if (lsp->tlv_data.area_addrs)
+ list_delete (lsp->tlv_data.area_addrs);
+ if (lsp->tlv_data.es_neighs)
+ list_delete (lsp->tlv_data.es_neighs);
+ if (lsp->tlv_data.ipv4_addrs)
+ list_delete (lsp->tlv_data.ipv4_addrs);
+ if (lsp->tlv_data.ipv4_int_reachs)
+ list_delete (lsp->tlv_data.ipv4_int_reachs);
+ if (lsp->tlv_data.ipv4_ext_reachs)
+ list_delete (lsp->tlv_data.ipv4_ext_reachs);
+#ifdef HAVE_IPV6
+ if (lsp->tlv_data.ipv6_addrs)
+ list_delete (lsp->tlv_data.ipv6_addrs);
+ if (lsp->tlv_data.ipv6_reachs)
+ list_delete (lsp->tlv_data.ipv6_reachs);
+#endif /* HAVE_IPV6 */
+
+ memset (&lsp->tlv_data, 0, sizeof (struct tlvs));
+
+ return;
+}
+
+void
+lsp_destroy (struct isis_lsp *lsp)
+{
+ if (!lsp)
+ return;
+
+ lsp_clear_data (lsp);
+
+ if (LSP_FRAGMENT (lsp->lsp_header->lsp_id) == 0 && lsp->lspu.frags) {
+ list_delete (lsp->lspu.frags);
+ }
+
+ if (lsp->pdu)
+ stream_free (lsp->pdu);
+ XFREE (MTYPE_ISIS_LSP, lsp);
+}
+
+void
+lsp_db_destroy (dict_t *lspdb)
+{
+ dnode_t *dnode, *next;
+ struct isis_lsp *lsp;
+
+ dnode = dict_first (lspdb);
+ while (dnode) {
+ next = dict_next (lspdb, dnode);
+ lsp = dnode_get (dnode);
+ lsp_destroy (lsp);
+ dict_delete_free (lspdb, dnode);
+ dnode = next;
+ }
+
+ dict_free (lspdb);
+
+ return;
+}
+
+/*
+ * Remove all the frags belonging to the given lsp
+ */
+void
+lsp_remove_frags (struct list *frags, dict_t *lspdb)
+{
+ dnode_t *dnode;
+ struct listnode *lnode;
+ struct isis_lsp *lsp;
+
+ for (lnode = listhead (frags); lnode; nextnode (lnode)) {
+ lsp = getdata (lnode);
+ dnode = dict_lookup (lspdb, lsp->lsp_header->lsp_id);
+ lsp_destroy (lsp);
+ dnode_destroy (dict_delete(lspdb, dnode));
+ }
+
+ list_delete_all_node (frags);
+
+ return;
+}
+
+void
+lsp_search_and_destroy (u_char *id, dict_t *lspdb)
+{
+ dnode_t *node;
+ struct isis_lsp *lsp;
+
+ node = dict_lookup (lspdb, id);
+ if (node) {
+ node = dict_delete (lspdb, node);
+ lsp = dnode_get (node);
+ /*
+ * If this is a zero lsp, remove all the frags now
+ */
+ if (LSP_FRAGMENT(lsp->lsp_header->lsp_id) == 0) {
+ if (lsp->lspu.frags)
+ lsp_remove_frags (lsp->lspu.frags, lspdb);
+ } else {
+ /*
+ * else just remove this frag, from the zero lsps' frag list
+ */
+ if (lsp->lspu.zero_lsp && lsp->lspu.zero_lsp->lspu.frags)
+ listnode_delete (lsp->lspu.zero_lsp->lspu.frags, lsp);
+ }
+ lsp_destroy (lsp);
+ dnode_destroy (node);
+ }
+}
+
+/*
+ * Compares a LSP to given values
+ * Params are given in net order
+ */
+int
+lsp_compare (char *areatag, struct isis_lsp *lsp, u_int32_t seq_num,
+ u_int16_t checksum, u_int16_t rem_lifetime)
+{
+ /* no point in double ntohl on seqnum */
+ if (lsp->lsp_header->seq_num == seq_num &&
+ lsp->lsp_header->checksum == checksum &&
+ /*comparing with 0, no need to do ntohl */
+ ((lsp->lsp_header->rem_lifetime == 0 && rem_lifetime == 0) ||
+ (lsp->lsp_header->rem_lifetime != 0 && rem_lifetime != 0))) {
+ if (isis->debugs & DEBUG_SNP_PACKETS) {
+ zlog_info ("ISIS-Snp (%s): LSP %s seq 0x%08x, cksum 0x%04x,"
+ " lifetime %us",
+ areatag,
+ rawlspid_print (lsp->lsp_header->lsp_id),
+ ntohl(lsp->lsp_header->seq_num),
+ ntohs(lsp->lsp_header->checksum),
+ ntohs(lsp->lsp_header->rem_lifetime) );
+ zlog_info ("ISIS-Snp (%s): is equal to ours seq 0x%08x,"
+ " cksum 0x%04x, lifetime %us",
+ areatag,
+ ntohl(seq_num),
+ ntohs(checksum),
+ ntohs(rem_lifetime));
+ }
+ return LSP_EQUAL;
+ }
+
+ if (ntohl(seq_num) >= ntohl(lsp->lsp_header->seq_num)) {
+ if (isis->debugs & DEBUG_SNP_PACKETS) {
+ zlog_info ("ISIS-Snp (%s): LSP %s seq 0x%08x, cksum 0x%04x,"
+ " lifetime %us",
+ areatag,
+ rawlspid_print (lsp->lsp_header->lsp_id),
+ ntohl(seq_num),
+ ntohs(checksum),
+ ntohs(rem_lifetime ));
+ zlog_info ("ISIS-Snp (%s): is newer than ours seq 0x%08x, "
+ "cksum 0x%04x, lifetime %us",
+ areatag,
+ ntohl(lsp->lsp_header->seq_num),
+ ntohs(lsp->lsp_header->checksum),
+ ntohs(lsp->lsp_header->rem_lifetime) );
+ }
+ return LSP_NEWER;
+ }
+ if (isis->debugs & DEBUG_SNP_PACKETS) {
+ zlog_info ("ISIS-Snp (%s): LSP %s seq 0x%08x, cksum 0x%04x, lifetime %us",
+ areatag,
+ rawlspid_print (lsp->lsp_header->lsp_id),
+ ntohl(seq_num),
+ ntohs(checksum),
+ ntohs(rem_lifetime ));
+ zlog_info ("ISIS-Snp (%s): is older than ours seq 0x%08x,"
+ " cksum 0x%04x, lifetime %us",
+ areatag,
+ ntohl(lsp->lsp_header->seq_num),
+ ntohs(lsp->lsp_header->checksum),
+ ntohs(lsp->lsp_header->rem_lifetime) );
+ }
+
+ return LSP_OLDER;
+}
+
+void
+lsp_inc_seqnum (struct isis_lsp *lsp, u_int32_t seq_num)
+{
+ u_int32_t newseq;
+
+ if (seq_num == 0 || ntohl (lsp->lsp_header->seq_num) > seq_num)
+ newseq = ntohl (lsp->lsp_header->seq_num) + 1;
+ else
+ newseq = seq_num ++;
+
+ lsp->lsp_header->seq_num = htonl (newseq);
+ iso_csum_create (STREAM_DATA (lsp->pdu) + 12,
+ ntohs(lsp->lsp_header->pdu_len) - 12, 12);
+
+ return;
+}
+
+/*
+ * Genetates checksum for LSP and its frags
+ */
+void
+lsp_seqnum_update (struct isis_lsp *lsp0)
+{
+ struct isis_lsp *lsp;
+ struct listnode *node;
+
+ lsp_inc_seqnum (lsp0, 0);
+
+ if (!lsp0->lspu.frags)
+ return;
+
+ for (node = listhead (lsp0->lspu.frags); node; nextnode (node)) {
+ lsp = getdata (node);
+ lsp_inc_seqnum(lsp, 0);
+ }
+
+ return;
+}
+
+int
+isis_lsp_authinfo_check (struct stream *stream, struct isis_area *area,
+ int pdulen, struct isis_passwd *passwd)
+{
+ uint32_t expected = 0, found;
+ struct tlvs tlvs;
+ int retval = 0;
+
+ expected |= TLVFLAG_AUTH_INFO;
+ retval = parse_tlvs (area->area_tag, stream->data +
+ ISIS_FIXED_HDR_LEN + ISIS_LSP_HDR_LEN,
+ pdulen - ISIS_FIXED_HDR_LEN
+ - ISIS_LSP_HDR_LEN,
+ &expected, &found, &tlvs);
+ if (retval || !(found & TLVFLAG_AUTH_INFO))
+ return 1; /* Auth fail (parsing failed or no auth-tlv)*/
+
+ return authentication_check (passwd, &tlvs.auth_info);
+}
+
+void
+lsp_update_data (struct isis_lsp *lsp, struct stream *stream,
+ struct isis_area *area)
+{
+ uint32_t expected = 0,found;
+ int retval;
+
+ /* copying only the relevant part of our stream */
+ lsp->pdu = stream_new (stream->endp);
+ lsp->pdu->putp = stream->putp;
+ lsp->pdu->getp = stream->getp;
+ lsp->pdu->endp = stream->endp;
+ memcpy (lsp->pdu->data, stream->data, stream->endp);
+
+ /* setting pointers to the correct place */
+ lsp->isis_header = (struct isis_fixed_hdr *)(STREAM_DATA(lsp->pdu));
+ lsp->lsp_header = (struct isis_link_state_hdr *)(STREAM_DATA(lsp->pdu) +
+ ISIS_FIXED_HDR_LEN);
+ lsp->age_out = ZERO_AGE_LIFETIME;
+ lsp->installed = time(NULL);
+ /*
+ * Get LSP data i.e. TLVs
+ */
+ expected |= TLVFLAG_AUTH_INFO;
+ expected |= TLVFLAG_AREA_ADDRS;
+ expected |= TLVFLAG_IS_NEIGHS;
+ if ((lsp->lsp_header->lsp_bits & 3) == 3) /* a level 2 LSP */
+ expected |= TLVFLAG_PARTITION_DESIG_LEVEL2_IS;
+ expected |= TLVFLAG_NLPID;
+ if (area->dynhostname)
+ expected |= TLVFLAG_DYN_HOSTNAME;
+ if (area->newmetric) {
+ expected |= TLVFLAG_TE_IS_NEIGHS;
+ expected |= TLVFLAG_TE_IPV4_REACHABILITY;
+ expected |= TLVFLAG_TE_ROUTER_ID;
+ }
+ expected |= TLVFLAG_IPV4_ADDR;
+ expected |= TLVFLAG_IPV4_INT_REACHABILITY;
+ expected |= TLVFLAG_IPV4_EXT_REACHABILITY;
+#ifdef HAVE_IPV6
+ expected |= TLVFLAG_IPV6_ADDR;
+ expected |= TLVFLAG_IPV6_REACHABILITY;
+#endif /* HAVE_IPV6 */
+
+ retval = parse_tlvs (area->area_tag, lsp->pdu->data +
+ ISIS_FIXED_HDR_LEN + ISIS_LSP_HDR_LEN,
+ ntohs(lsp->lsp_header->pdu_len) - ISIS_FIXED_HDR_LEN
+ - ISIS_LSP_HDR_LEN, &expected, &found, &lsp->tlv_data);
+
+ if (found & TLVFLAG_DYN_HOSTNAME) {
+ if (area->dynhostname)
+ isis_dynhn_insert (lsp->lsp_header->lsp_id, lsp->tlv_data.hostname,
+ (lsp->lsp_header->lsp_bits & LSPBIT_IST) ==
+ IS_LEVEL_1_AND_2 ? IS_LEVEL_2 :
+ (lsp->lsp_header->lsp_bits & LSPBIT_IST));
+ }
+
+}
+
+void
+lsp_update (struct isis_lsp *lsp, struct isis_link_state_hdr *lsp_hdr,
+ struct stream *stream, struct isis_area *area)
+{
+
+ /* free the old lsp data*/
+ XFREE (MTYPE_STREAM_DATA, lsp->pdu);
+ lsp_clear_data (lsp);
+
+ /* rebuild the lsp data */
+ lsp_update_data (lsp, stream, area);
+
+ /* set the new values for lsp header */
+ memcpy (lsp->lsp_header, lsp_hdr, ISIS_LSP_HDR_LEN);
+
+}
+
+
+/* creation of LSP directly from what we received */
+struct isis_lsp *
+lsp_new_from_stream_ptr (struct stream *stream,
+ u_int16_t pdu_len, struct isis_lsp *lsp0,
+ struct isis_area *area)
+{
+ struct isis_lsp *lsp;
+
+ lsp = XMALLOC (MTYPE_ISIS_LSP, sizeof (struct isis_lsp));
+ memset (lsp, 0, sizeof (struct isis_lsp));
+
+ lsp_update_data (lsp, stream, area);
+
+ if (lsp0 == NULL) {
+ /*
+ * zero lsp -> create the list for fragments
+ */
+ lsp->lspu.frags = list_new ();
+ } else {
+ /*
+ * a fragment -> set the backpointer and add this to zero lsps frag list
+ */
+ lsp->lspu.zero_lsp = lsp0;
+ listnode_add (lsp0->lspu.frags, lsp);
+ }
+
+ return lsp;
+}
+
+struct isis_lsp *
+lsp_new (u_char *lsp_id, u_int16_t rem_lifetime, u_int32_t seq_num,
+ u_int8_t lsp_bits, u_int16_t checksum, int level)
+{
+ struct isis_lsp *lsp;
+
+ lsp = XMALLOC (MTYPE_ISIS_LSP, sizeof (struct isis_lsp));
+ if (!lsp) {
+ /* FIXME: set lspdbol bit */
+ zlog_warn ("lsp_new(): out of memory");
+ return NULL;
+ }
+ memset (lsp, 0, sizeof (struct isis_lsp));
+#ifdef LSP_MEMORY_PREASSIGN
+ lsp->pdu = stream_new (1514); /*Should be minimal mtu? yup...*/
+#else
+ /* We need to do realloc on TLVs additions*/
+ lsp->pdu = malloc (ISIS_FIXED_HDR_LEN + ISIS_LSP_HDR_LEN);
+#endif /* LSP_MEMORY_PREASSIGN */
+ if (LSP_FRAGMENT (lsp_id) == 0)
+ lsp->lspu.frags = list_new ();
+ lsp->isis_header = (struct isis_fixed_hdr*)(STREAM_DATA(lsp->pdu));
+ lsp->lsp_header = (struct isis_link_state_hdr*)
+ (STREAM_DATA(lsp->pdu) + ISIS_FIXED_HDR_LEN);
+
+ /* at first we fill the FIXED HEADER */
+ (level == 1) ? fill_fixed_hdr (lsp->isis_header, L1_LINK_STATE):
+ fill_fixed_hdr (lsp->isis_header, L2_LINK_STATE);
+
+ /* now for the LSP HEADER */
+ /* Minimal LSP PDU size */
+ lsp->lsp_header->pdu_len = htons (ISIS_FIXED_HDR_LEN + ISIS_LSP_HDR_LEN);
+ memcpy (lsp->lsp_header->lsp_id, lsp_id, ISIS_SYS_ID_LEN + 2);
+ lsp->lsp_header->checksum = checksum; /* Provided in network order */
+ lsp->lsp_header->seq_num = htonl (seq_num);
+ lsp->lsp_header->rem_lifetime = htons (rem_lifetime);
+ lsp->lsp_header->lsp_bits = lsp_bits;
+ lsp->level = level;
+ lsp->age_out = ZERO_AGE_LIFETIME;
+
+ stream_set_putp (lsp->pdu, ISIS_FIXED_HDR_LEN + ISIS_LSP_HDR_LEN);
+
+ /* #ifdef EXTREME_DEBUG */
+ /* logging */
+ zlog_info ("New LSP with ID %s-%02x-%02x seqnum %08x", sysid_print (lsp_id),
+ LSP_PSEUDO_ID (lsp->lsp_header->lsp_id),
+ LSP_FRAGMENT (lsp->lsp_header->lsp_id),
+ ntohl (lsp->lsp_header->seq_num));
+ /* #endif EXTREME DEBUG */
+
+ return lsp;
+}
+
+void
+lsp_insert (struct isis_lsp *lsp, dict_t *lspdb)
+{
+ dict_alloc_insert (lspdb, lsp->lsp_header->lsp_id, lsp);
+}
+
+/*
+ * Build a list of LSPs with non-zero ht bounded by start and stop ids
+ */
+void
+lsp_build_list_nonzero_ht (u_char *start_id, u_char *stop_id,
+ struct list *list, dict_t *lspdb)
+{
+ dnode_t *first, *last, *curr;
+
+ first = dict_lower_bound (lspdb, start_id);
+ if (!first)
+ return;
+
+ last = dict_upper_bound (lspdb, stop_id);
+
+ curr = first;
+
+ if (((struct isis_lsp *)(curr->dict_data))->lsp_header->rem_lifetime)
+ listnode_add (list, first->dict_data);
+
+ while (curr) {
+ curr = dict_next (lspdb, curr);
+ if (curr &&
+ ((struct isis_lsp *)(curr->dict_data))->lsp_header->rem_lifetime)
+ listnode_add (list, curr->dict_data);
+ if (curr == last)
+ break;
+ }
+
+ return;
+}
+
+/*
+ * Build a list of all LSPs bounded by start and stop ids
+ */
+void
+lsp_build_list (u_char *start_id, u_char *stop_id,
+ struct list *list, dict_t *lspdb)
+{
+ dnode_t *first, *last, *curr;
+
+ first = dict_lower_bound (lspdb, start_id);
+ if (!first)
+ return;
+
+ last = dict_upper_bound (lspdb, stop_id);
+
+ curr = first;
+
+ listnode_add (list, first->dict_data);
+
+ while (curr) {
+ curr = dict_next (lspdb, curr);
+ if (curr)
+ listnode_add (list, curr->dict_data);
+ if (curr == last)
+ break;
+ }
+
+ return;
+}
+
+/*
+ * Build a list of LSPs with SSN flag set for the given circuit
+ */
+void
+lsp_build_list_ssn (struct isis_circuit *circuit, struct list *list,
+ dict_t *lspdb)
+{
+ dnode_t *dnode, *next;
+ struct isis_lsp *lsp;
+
+ dnode = dict_first (lspdb);
+ while (dnode != NULL) {
+ next = dict_next (lspdb, dnode);
+ lsp = dnode_get (dnode);
+ if (ISIS_CHECK_FLAG (lsp->SSNflags, circuit))
+ listnode_add (list, lsp);
+ dnode = next;
+ }
+
+ return;
+}
+
+void
+lsp_set_time (struct isis_lsp *lsp)
+{
+ assert (lsp);
+
+ if (lsp->lsp_header->rem_lifetime == 0) {
+ if (lsp->age_out != 0) lsp->age_out--;
+ return;
+ }
+
+ /* If we are turning 0 */
+ /* ISO 10589 - 7.3.16.4 first paragraph */
+
+ if (ntohs (lsp->lsp_header->rem_lifetime) == 1) {
+ /* 7.3.16.4 a) set SRM flags on all */
+ ISIS_FLAGS_SET_ALL (lsp->SRMflags);
+ /* 7.3.16.4 b) retain only the header FIXME */
+ /* 7.3.16.4 c) record the time to purge FIXME (other way to do it)*/
+ }
+
+ lsp->lsp_header->rem_lifetime =
+ htons (ntohs (lsp->lsp_header->rem_lifetime) - 1);
+}
+
+void
+lspid_print (u_char *lsp_id, u_char *trg, char dynhost, char frag)
+{
+ struct isis_dynhn *dyn = NULL;
+ u_char id [SYSID_STRLEN];
+
+ if (dynhost)
+ dyn = dynhn_find_by_id (lsp_id);
+ else
+ dyn = NULL;
+
+ if (dyn)
+ sprintf (id, "%.14s", dyn->name.name);
+ else if (!memcmp (isis->sysid, lsp_id, ISIS_SYS_ID_LEN) & dynhost)
+ sprintf (id, "%.14s", host.name);
+ else {
+ memcpy(id, sysid_print (lsp_id), 15);
+ }
+ if (frag)
+ sprintf (trg, "%s.%02x-%02x", id, LSP_PSEUDO_ID(lsp_id),
+ LSP_FRAGMENT(lsp_id));
+ else
+ sprintf (trg, "%s.%02x", id, LSP_PSEUDO_ID(lsp_id));
+}
+
+/* Convert the lsp attribute bits to attribute string */
+char *
+lsp_bits2string (u_char *lsp_bits) {
+
+ char *pos = lsp_bits_string;
+
+ if(!*lsp_bits)
+ return " none";
+
+ /* we only focus on the default metric */
+ pos += sprintf (pos, "%d/",
+ ISIS_MASK_LSP_ATT_DEFAULT_BIT(*lsp_bits) ?
+ 1 : 0);
+
+ pos += sprintf (pos, "%d/",
+ ISIS_MASK_LSP_PARTITION_BIT(*lsp_bits) ?
+ 1 : 0);
+
+ pos += sprintf (pos, "%d",
+ ISIS_MASK_LSP_OL_BIT(*lsp_bits) ?
+ 1 : 0);
+
+ *(pos) = '\0';
+
+ return lsp_bits_string;
+
+}
+
+/* this function prints the lsp on show isis database */
+void
+lsp_print (dnode_t *node, struct vty *vty, char dynhost)
+{
+ struct isis_lsp *lsp = dnode_get(node);
+ u_char LSPid[255];
+
+ lspid_print (lsp->lsp_header->lsp_id, LSPid, dynhost, 1);
+ vty_out (vty, "%-21s%c ", LSPid,lsp->own_lsp?'*':' ');
+ vty_out (vty, "0x%08x ", ntohl(lsp->lsp_header->seq_num));
+ vty_out (vty, "0x%04x ", ntohs(lsp->lsp_header->checksum));
+
+ if (ntohs(lsp->lsp_header->rem_lifetime) == 0)
+ vty_out (vty, " (%2u)",lsp->age_out);
+ else
+ vty_out (vty, "%5u", ntohs(lsp->lsp_header->rem_lifetime));
+
+ vty_out (vty, " %s%s",
+ lsp_bits2string(&lsp->lsp_header->lsp_bits),
+ VTY_NEWLINE);
+}
+
+void
+lsp_print_detail (dnode_t *node, struct vty *vty, char dynhost)
+{
+ struct isis_lsp *lsp = dnode_get (node);
+ struct area_addr *area_addr;
+ char nlpidstr[2];
+ int i;
+ struct listnode *lnode;
+ struct is_neigh *is_neigh;
+ struct te_is_neigh *te_is_neigh;
+ struct ipv4_reachability *ipv4_reach;
+ struct in_addr *ipv4_addr;
+ struct te_ipv4_reachability *te_ipv4_reach;
+#ifdef HAVE_IPV6
+ struct ipv6_reachability *ipv6_reach;
+ struct in6_addr in6;
+#endif
+ u_char LSPid[255];
+ u_char hostname[255];
+ u_char buff[BUFSIZ];
+ u_int32_t now,helper;
+ u_char ipv4_reach_prefix[20];
+ u_char ipv4_reach_mask[20];
+ u_char ipv4_address[20];
+
+ lspid_print (lsp->lsp_header->lsp_id, LSPid, dynhost, 1);
+ lsp_print(node, vty, dynhost);
+
+ /* for all area address */
+ if (lsp->tlv_data.area_addrs) {
+ LIST_LOOP (lsp->tlv_data.area_addrs, area_addr, lnode) {
+ vty_out (vty, " Area Address: %s%s",
+ isonet_print (area_addr->area_addr, area_addr->addr_len),
+ VTY_NEWLINE);
+ }
+ }
+
+ /* for the nlpid tlv */
+ if (lsp->tlv_data.nlpids) {
+ for (i = 0; i < lsp->tlv_data.nlpids->count; i++) {
+ switch (lsp->tlv_data.nlpids->nlpids[i]) {
+ case NLPID_IP:
+ case NLPID_IPV6:
+ vty_out (vty, " NLPID: 0x%X%s",
+ lsp->tlv_data.nlpids->nlpids[i],
+ VTY_NEWLINE);
+ break;
+ default:
+ vty_out (vty, " NLPID: %s%s",
+ "unknown",
+ VTY_NEWLINE);
+ break;
+ }
+ }
+ }
+
+ /* for the hostname tlv */
+ if (lsp->tlv_data.hostname) {
+ bzero (hostname, sizeof (hostname));
+ memcpy (hostname, lsp->tlv_data.hostname->name,
+ lsp->tlv_data.hostname->namelen);
+ vty_out (vty, " Hostname: %s%s", hostname, VTY_NEWLINE);
+ }
+
+ if (lsp->tlv_data.ipv4_addrs) {
+ LIST_LOOP(lsp->tlv_data.ipv4_addrs, ipv4_addr, lnode) {
+ memcpy (ipv4_address, inet_ntoa (*ipv4_addr), sizeof (ipv4_addr));
+ vty_out (vty, " IP: %s%s",
+ ipv4_address,
+ VTY_NEWLINE);
+ }
+ }
+
+ /* for the internal reachable tlv */
+ if (lsp->tlv_data.ipv4_int_reachs)
+ LIST_LOOP(lsp->tlv_data.ipv4_int_reachs, ipv4_reach, lnode) {
+ memcpy (ipv4_reach_prefix, inet_ntoa (ipv4_reach->prefix), sizeof (ipv4_reach_prefix));
+ memcpy (ipv4_reach_mask, inet_ntoa (ipv4_reach->mask), sizeof (ipv4_reach_mask));
+ vty_out (vty, " Matric: %d IP %s %s%s",
+ ipv4_reach->metrics.metric_default,
+ ipv4_reach_prefix,
+ ipv4_reach_mask,
+ VTY_NEWLINE);
+ }
+
+ /* for the IS neighbor tlv */
+ if (lsp->tlv_data.is_neighs) {
+ LIST_LOOP(lsp->tlv_data.is_neighs,is_neigh,lnode) {
+ lspid_print (is_neigh->neigh_id, LSPid, dynhost, 0);
+ vty_out (vty, " Metric: %d IS %s%s",
+ is_neigh->metrics.metric_default,
+ LSPid,
+ VTY_NEWLINE);
+ }
+ }
+
+/* FIXME: Other tlvs such as te or external tlv will be added later */
+#if 0
+ vty_out (vty, "%s %s %c%s",
+ VTY_NEWLINE,
+ LSPid,
+ lsp->own_lsp ? '*' : ' ',
+ VTY_NEWLINE);
+
+ vty_out (vty, " Sequence: 0x%08x Checksum: 0x%04x Lifetime: ",
+ ntohl (lsp->lsp_header->seq_num),
+ ntohs (lsp->lsp_header->checksum));
+
+ if (ntohs (lsp->lsp_header->rem_lifetime) == 0)
+ vty_out (vty, " (%2u) ", lsp->age_out);
+ else
+ vty_out (vty, "%5u ", ntohs (lsp->lsp_header->rem_lifetime));
+
+ vty_out (vty, "%s Attributes:%s",
+ VTY_NEWLINE,
+ lsp_bits2string (&lsp->lsp_header->lsp_bits));
+
+ /* if this is a self originated LSP then print
+ * the generation time plus when we sent it last
+ * if it is a non self-originated LSP then print the
+ * time when the LSP has been installed
+ */
+
+ if (lsp->own_lsp) {
+
+ now = time (NULL);
+ helper = now - lsp->last_generated;
+ if (!lsp->last_generated)
+ helper = 0;
+
+ vty_out (vty, ", Generated: %s ago",
+ time2string (helper));
+
+ now = time (NULL);
+ helper = now - lsp->last_sent;
+ if (!lsp->last_sent)
+ helper = 0;
+
+ vty_out (vty, ", Last sent: %s ago",
+ time2string (helper));
+ } else {
+ now = time (NULL);
+ helper = now - lsp->installed;
+ if (!lsp->installed)
+ helper = 0;
+
+ vty_out (vty, ", Installed: %s ago",
+ time2string (helper));
+
+ }
+
+ vty_out (vty, "%s", VTY_NEWLINE);
+
+ if (lsp->tlv_data.nlpids) {
+ vty_out (vty, " Speaks: %s%s", nlpid2string (lsp->tlv_data.nlpids),
+ VTY_NEWLINE);
+ }
+
+ if (lsp->tlv_data.router_id) {
+ vty_out (vty, " Router ID: %s%s",
+ inet_ntoa (lsp->tlv_data.router_id->id), VTY_NEWLINE);
+ }
+
+ if (lsp->tlv_data.is_neighs)
+ LIST_LOOP(lsp->tlv_data.is_neighs,is_neigh,lnode) {
+ lspid_print (is_neigh->neigh_id, LSPid, dynhost, 0);
+ vty_out (vty, " IS %s, Metric: %d%s",
+ LSPid,
+ is_neigh->metrics.metric_default,
+ VTY_NEWLINE);
+ }
+
+ if (lsp->tlv_data.te_is_neighs)
+ LIST_LOOP(lsp->tlv_data.te_is_neighs,te_is_neigh,lnode) {
+ /* FIXME: metric display is wrong */
+ lspid_print (te_is_neigh->neigh_id, LSPid, dynhost, 0);
+ vty_out (vty, " extd-IS %s, Metric: %d%s",
+ LSPid,
+ te_is_neigh->te_metric[0],
+ VTY_NEWLINE);
+ }
+
+ if (lsp->tlv_data.ipv4_int_reachs)
+ LIST_LOOP(lsp->tlv_data.ipv4_int_reachs, ipv4_reach, lnode) {
+ vty_out (vty, " int-IP %s/%d, Metric: %d%s",
+ inet_ntoa (ipv4_reach->prefix),
+ ip_masklen (ipv4_reach->mask),
+ ipv4_reach->metrics.metric_default,
+ VTY_NEWLINE);
+ }
+
+ if (lsp->tlv_data.ipv4_ext_reachs)
+ LIST_LOOP(lsp->tlv_data.ipv4_ext_reachs,ipv4_reach,lnode) {
+ vty_out (vty, " ext-IP %s/%d, Metric: %d%s",
+ inet_ntoa(ipv4_reach->prefix),
+ ip_masklen(ipv4_reach->mask),
+ ipv4_reach->metrics.metric_default,
+ VTY_NEWLINE);
+ }
+
+ if (lsp->tlv_data.te_ipv4_reachs)
+ LIST_LOOP(lsp->tlv_data.te_ipv4_reachs,te_ipv4_reach,lnode) {
+ vty_out (vty, " extd-IP %s/%d, Metric: %d%s",
+ inet_ntoa ( newprefix2inaddr (&te_ipv4_reach->prefix_start,
+ te_ipv4_reach->control)),
+ te_ipv4_reach->control & 0x3F,
+ ntohl (te_ipv4_reach->te_metric),
+ VTY_NEWLINE);
+ }
+
+#ifdef HAVE_IPV6
+ if (lsp->tlv_data.ipv6_reachs)
+ LIST_LOOP(lsp->tlv_data.ipv6_reachs, ipv6_reach, lnode) {
+ memcpy (in6.s6_addr, ipv6_reach->prefix, 16);
+ inet_ntop (AF_INET6, &in6, buff, BUFSIZ);
+ if ((ipv6_reach->control_info &&
+ CTRL_INFO_DISTRIBUTION) == DISTRIBUTION_INTERNAL)
+ vty_out (vty, " int-IPv6 %s/%d, Metric: %d%s",
+ buff,
+ ipv6_reach->prefix_len,
+ ntohl (ipv6_reach->metric),
+ VTY_NEWLINE);
+ else
+ vty_out (vty, " ext-IPv6 %s/%d, Metric: %d%s",
+ buff,
+ ipv6_reach->prefix_len,
+ ntohl (ipv6_reach->metric),
+ VTY_NEWLINE);
+
+ }
+#endif
+ if (lsp->tlv_data.hostname) {
+ memset (hostname, 0, sizeof (hostname));
+ memcpy (hostname, lsp->tlv_data.hostname->name,
+ lsp->tlv_data.hostname->namelen);
+ vty_out (vty, " Hostname: %s%s", hostname, VTY_NEWLINE);
+ }
+#endif
+ return;
+}
+
+/* print all the lsps info in the local lspdb */
+int
+lsp_print_all (struct vty *vty, dict_t *lspdb, char detail, char dynhost)
+{
+
+ dnode_t *node = dict_first(lspdb), *next;
+ int lsp_count = 0;
+
+ /* print the title, for both modes */
+ vty_out (vty, "LSP ID LSP Seq Num LSP Checksum "
+ "LSP Holdtime ATT/P/OL%s", VTY_NEWLINE);
+
+ if (detail == ISIS_UI_LEVEL_BRIEF) {
+ while (node != NULL) {
+ /* dict_contains (lspdb, node); */ /* I think it is unnecessary, so I comment it out */
+ next = dict_next (lspdb, node);
+ lsp_print (node, vty, dynhost);
+ node = next;
+ lsp_count++;
+ }
+ } else if (detail == ISIS_UI_LEVEL_DETAIL) {
+ while (node != NULL) {
+ next = dict_next (lspdb, node);
+ lsp_print_detail (node, vty, dynhost);
+ node = next;
+ lsp_count++;
+ }
+ }
+
+ return lsp_count;
+}
+
+/* this function reallocate memory to an lsp pdu, with an additional
+ * size of memory, it scans the lsp and moves all pointers the
+ * way they should */
+u_char *
+lsppdu_realloc (struct isis_lsp *lsp, int memorytype, int size)
+{
+ u_char *retval;
+
+ retval = STREAM_DATA(lsp->pdu) + ntohs(lsp->lsp_header->pdu_len);
+#ifdef LSP_MEMORY_PREASSIGN
+ lsp->lsp_header->pdu_len = htons(ntohs(lsp->lsp_header->pdu_len) + size);
+ return retval;
+#else /* otherwise we have to move all pointers */
+ u_char *newpdu;
+ newpdu = stream_new (ntohs (lsp->lsp_header->pdu_len) + size);
+ memcpy (STREAM_DATA (newpdu), STREAM_DATA(lsp->pdu),
+ ntohs (lsp->lsp_header->pdu_len));
+ XFREE (memorytype, lsp->pdu);
+ lsp->pdu = newpdu;
+ lsp->isis_header = (struct isis_fixed_hdr*)STREAM_DATA(lsp->pdu);
+ lsp->lsp_header = (struct isis_link_state_hdr*)
+ (STREAM_DATA(lsp->pdu) + ISIS_FIXED_HDR_LEN);
+ htons (ntohs (lsp->lsp_header->pdu_len) += size);
+ return STREAM_DATA(lsp->pdu) + (lsp->lsp_header->pdu_len - size);
+#endif /* LSP_MEMORY_PREASSIGN */
+}
+
+
+#if 0 /* Saving the old one just in case :) */
+/*
+ * Builds the lsp->tlv_data
+ * and writes the tlvs into lsp->pdu
+ */
+void
+lsp_build_nonpseudo (struct isis_lsp *lsp, struct isis_area *area)
+{
+ struct is_neigh *is_neigh;
+ struct listnode *node, *ipnode;
+ int level = lsp->level;
+ struct isis_circuit *circuit;
+ struct prefix_ipv4 *ipv4;
+ struct ipv4_reachability *ipreach;
+ struct isis_adjacency *nei;
+#ifdef HAVE_IPV6
+ struct prefix_ipv6 *ipv6;
+ struct ipv6_reachability *ip6reach;
+#endif /* HAVE_IPV6 */
+
+ /*
+ * First add the tlvs related to area
+ */
+
+ /* Area addresses */
+ if (lsp->tlv_data.area_addrs == NULL)
+ lsp->tlv_data.area_addrs = list_new ();
+ list_add_list (lsp->tlv_data.area_addrs, area->area_addrs);
+ /* Protocols Supported */
+ if (area->ip_circuits > 0
+#ifdef HAVE_IPV6
+ || area->ipv6_circuits > 0
+#endif /* HAVE_IPV6 */
+ )
+ {
+ lsp->tlv_data.nlpids = XMALLOC (MTYPE_ISIS_TLV, sizeof (struct nlpids));
+ lsp->tlv_data.nlpids->count = 0;
+ if (area->ip_circuits > 0) {
+ lsp->tlv_data.nlpids->count++;
+ lsp->tlv_data.nlpids->nlpids[0] = NLPID_IP;
+ }
+#ifdef HAVE_IPV6
+ if (area->ipv6_circuits > 0) {
+ lsp->tlv_data.nlpids->count++;
+ lsp->tlv_data.nlpids->nlpids[lsp->tlv_data.nlpids->count - 1] =
+ NLPID_IPV6;
+ }
+#endif /* HAVE_IPV6 */
+ }
+ /* Dynamic Hostname */
+ if (area->dynhostname) {
+ lsp->tlv_data.hostname = XMALLOC (MTYPE_ISIS_TLV,
+ sizeof (struct hostname));
+ memcpy (&lsp->tlv_data.hostname->name, host.name, strlen(host.name));
+ lsp->tlv_data.hostname->namelen = strlen (host.name);
+ }
+#ifdef TOPOLOGY_GENERATE
+ /*
+ * If we have a topology in this area, we need to connect this lsp to
+ * the first topology lsp
+ */
+ if ((area->topology) && (level == 1)) {
+ if (lsp->tlv_data.is_neighs == NULL)
+ lsp->tlv_data.is_neighs = list_new ();
+ is_neigh = XMALLOC (MTYPE_ISIS_TLV, sizeof (struct is_neigh));
+ memset (is_neigh, 0, sizeof (struct is_neigh));
+ memcpy (&is_neigh->neigh_id, area->topology_baseis, ISIS_SYS_ID_LEN);
+ /* connected to the first */
+ is_neigh->neigh_id[ISIS_SYS_ID_LEN-1] = (0x01);
+ /* this is actually the same system, why mess the SPT */
+ is_neigh->metrics.metric_default = 0;
+ is_neigh->metrics.metric_delay = METRICS_UNSUPPORTED;
+ is_neigh->metrics.metric_expense = METRICS_UNSUPPORTED;
+ is_neigh->metrics.metric_error = METRICS_UNSUPPORTED;
+ listnode_add (lsp->tlv_data.is_neighs, is_neigh);
+
+ }
+#endif
+
+ /*
+ * Then add tlvs related to circuits
+ */
+ for (node = listhead (area->circuit_list); node; nextnode (node)) {
+ circuit = getdata (node);
+ if (circuit->state != C_STATE_UP)
+ continue;
+
+ /*
+ * Add IPv4 internal reachability of this circuit
+ */
+ if (circuit->ip_router && circuit->ip_addrs &&
+ circuit->ip_addrs->count > 0) {
+ if (lsp->tlv_data.ipv4_int_reachs == NULL) {
+ lsp->tlv_data.ipv4_int_reachs = list_new ();
+ lsp->tlv_data.ipv4_int_reachs->del = free_tlv;
+ }
+ for (ipnode = listhead (circuit->ip_addrs); ipnode; nextnode (ipnode)) {
+ ipv4 = getdata (ipnode);
+ ipreach = XMALLOC (MTYPE_ISIS_TLV, sizeof (struct ipv4_reachability));
+ ipreach->metrics = circuit->metrics[level - 1];
+ ipreach->prefix = ipv4->prefix;
+ masklen2ip (ipv4->prefixlen, &ipreach->mask);
+ listnode_add (lsp->tlv_data.ipv4_int_reachs, ipreach);
+ }
+ }
+#ifdef HAVE_IPV6
+ /*
+ * Add IPv6 reachability of this circuit
+ */
+ if (circuit->ipv6_router && circuit->ipv6_non_link &&
+ circuit->ipv6_non_link->count > 0) {
+ if (lsp->tlv_data.ipv6_reachs == NULL) {
+ lsp->tlv_data.ipv6_reachs = list_new ();
+ lsp->tlv_data.ipv6_reachs->del = free_tlv;
+ }
+ for (ipnode = listhead (circuit->ipv6_non_link); ipnode;
+ nextnode (ipnode)) {
+ ipv6 = getdata (ipnode);
+ ip6reach = XMALLOC (MTYPE_ISIS_TLV, sizeof (struct ipv6_reachability));
+ memset (ip6reach, 0, sizeof (struct ipv6_reachability));
+ ip6reach->metric = htonl(circuit->metrics[level - 1].metric_default);
+ ip6reach->control_info = 0;
+ ip6reach->prefix_len = ipv6->prefixlen;
+ memcpy (&ip6reach->prefix, ipv6->prefix.s6_addr,
+ (ipv6->prefixlen + 7) / 8);
+ listnode_add (lsp->tlv_data.ipv6_reachs, ip6reach);
+ }
+ }
+#endif /* HAVE_IPV6 */
+
+ switch (circuit->circ_type) {
+ case CIRCUIT_T_BROADCAST:
+ if (level & circuit->circuit_is_type) {
+ if (lsp->tlv_data.is_neighs == NULL) {
+ lsp->tlv_data.is_neighs = list_new ();
+ lsp->tlv_data.is_neighs->del = free_tlv;
+ }
+ is_neigh = XMALLOC (MTYPE_ISIS_TLV, sizeof (struct is_neigh));
+ memset (is_neigh, 0, sizeof (struct is_neigh));
+ if (level == 1)
+ memcpy (&is_neigh->neigh_id,
+ circuit->u.bc.l1_desig_is, ISIS_SYS_ID_LEN + 1);
+ else
+ memcpy (&is_neigh->neigh_id,
+ circuit->u.bc.l2_desig_is, ISIS_SYS_ID_LEN + 1);
+ is_neigh->metrics = circuit->metrics[level - 1];
+ listnode_add (lsp->tlv_data.is_neighs, is_neigh);
+ }
+ break;
+ case CIRCUIT_T_P2P:
+ nei = circuit->u.p2p.neighbor;
+ if (nei && (level & nei->circuit_t)) {
+ if (lsp->tlv_data.is_neighs == NULL) {
+ lsp->tlv_data.is_neighs = list_new ();
+ lsp->tlv_data.is_neighs->del = free_tlv;
+ }
+ is_neigh = XMALLOC (MTYPE_ISIS_TLV, sizeof (struct is_neigh));
+ memset (is_neigh, 0, sizeof (struct is_neigh));
+ memcpy (&is_neigh->neigh_id, nei->sysid, ISIS_SYS_ID_LEN);
+ is_neigh->metrics = circuit->metrics[level - 1];
+ listnode_add (lsp->tlv_data.is_neighs, is_neigh);
+ }
+ break;
+ case CIRCUIT_T_STATIC_IN:
+ zlog_warn ("lsp_area_create: unsupported circuit type");
+ break;
+ case CIRCUIT_T_STATIC_OUT:
+ zlog_warn ("lsp_area_create: unsupported circuit type");
+ break;
+ case CIRCUIT_T_DA:
+ zlog_warn ("lsp_area_create: unsupported circuit type");
+ break;
+ default:
+ zlog_warn ("lsp_area_create: unknown circuit type");
+ }
+ }
+
+ stream_set_putp (lsp->pdu, ISIS_FIXED_HDR_LEN + ISIS_LSP_HDR_LEN);
+
+ if (lsp->tlv_data.nlpids)
+ tlv_add_nlpid (lsp->tlv_data.nlpids, lsp->pdu);
+ if (lsp->tlv_data.hostname)
+ tlv_add_dynamic_hostname (lsp->tlv_data.hostname, lsp->pdu);
+ if (lsp->tlv_data.area_addrs && listcount (lsp->tlv_data.area_addrs) > 0 )
+ tlv_add_area_addrs (lsp->tlv_data.area_addrs, lsp->pdu);
+ if (lsp->tlv_data.is_neighs && listcount (lsp->tlv_data.is_neighs) > 0)
+ tlv_add_is_neighs (lsp->tlv_data.is_neighs, lsp->pdu);
+ if (lsp->tlv_data.ipv4_int_reachs &&
+ listcount (lsp->tlv_data.ipv4_int_reachs) > 0)
+ tlv_add_ipv4_reachs (lsp->tlv_data.ipv4_int_reachs, lsp->pdu);
+#ifdef HAVE_IPV6
+ if (lsp->tlv_data.ipv6_reachs &&
+ listcount (lsp->tlv_data.ipv6_reachs) > 0)
+ tlv_add_ipv6_reachs (lsp->tlv_data.ipv6_reachs, lsp->pdu);
+#endif /* HAVE_IPV6 */
+
+ lsp->lsp_header->pdu_len = htons (stream_get_putp (lsp->pdu));
+
+ return;
+}
+#endif
+
+#define FRAG_THOLD(S,T) \
+((STREAM_SIZE(S)*T)/100)
+
+/* stream*, area->lsp_frag_threshold, increment */
+#define FRAG_NEEDED(S,T,I) \
+ (STREAM_SIZE(S)-STREAM_REMAIN(S)+(I) > FRAG_THOLD(S,T))
+
+void
+lsp_tlv_fit (struct isis_lsp *lsp, struct list **from, struct list **to,
+ int tlvsize, int frag_thold,
+ int tlv_build_func(struct list *, struct stream *))
+{
+ int count, i;
+
+ /* can we fit all ? */
+ if (!FRAG_NEEDED(lsp->pdu, frag_thold,
+ listcount(*from) * tlvsize + 2)) {
+ tlv_build_func (*from, lsp->pdu);
+ *to = *from;
+ *from = NULL;
+ } else if (!FRAG_NEEDED(lsp->pdu, frag_thold, tlvsize + 2)) {
+ /* fit all we can */
+ count = FRAG_THOLD(lsp->pdu,frag_thold) - 2 -
+ (STREAM_SIZE(lsp->pdu) - STREAM_REMAIN(lsp->pdu));
+ if (count)
+ count = count / tlvsize;
+ for (i = 0; i < count; i++) {
+ listnode_add (*to, getdata(listhead(*from)));
+ listnode_delete(*from, getdata(listhead(*from)));
+ }
+ tlv_build_func (*to, lsp->pdu);
+ }
+ lsp->lsp_header->pdu_len = htons (stream_get_putp (lsp->pdu));
+ return;
+}
+
+struct isis_lsp *
+lsp_next_frag (u_char frag_num, struct isis_lsp *lsp0, struct isis_area *area,
+ int level )
+{
+ struct isis_lsp *lsp;
+ u_char frag_id[ISIS_SYS_ID_LEN + 2];
+
+ memcpy (frag_id, lsp0->lsp_header->lsp_id, ISIS_SYS_ID_LEN + 1);
+ LSP_FRAGMENT (frag_id) = frag_num;
+ lsp = lsp_search (frag_id, area->lspdb[level - 1]);
+ if (lsp) {
+ /*
+ * Clear the TLVs, but inherit the authinfo
+ */
+ lsp_clear_data (lsp);
+ if (lsp0->tlv_data.auth_info.type) {
+ memcpy (&lsp->tlv_data.auth_info, &lsp->tlv_data.auth_info,
+ sizeof (struct isis_passwd));
+ tlv_add_authinfo (lsp->tlv_data.auth_info.type,
+ lsp->tlv_data.auth_info.len,
+ lsp->tlv_data.auth_info.passwd, lsp->pdu);
+ }
+ return lsp;
+ }
+ lsp = lsp_new (frag_id, area->max_lsp_lifetime[level - 1], 0, area->is_type,
+ 0, level);
+ lsp->own_lsp = 1;
+ lsp_insert (lsp, area->lspdb[level-1]);
+ listnode_add (lsp0->lspu.frags, lsp);
+ lsp->lspu.zero_lsp = lsp0;
+ /*
+ * Copy the authinfo from zero LSP
+ */
+ if (lsp0->tlv_data.auth_info.type) {
+ memcpy (&lsp->tlv_data.auth_info, &lsp->tlv_data.auth_info,
+ sizeof (struct isis_passwd));
+ tlv_add_authinfo (lsp->tlv_data.auth_info.type,
+ lsp->tlv_data.auth_info.len,
+ lsp->tlv_data.auth_info.passwd, lsp->pdu);
+ }
+ return lsp;
+}
+
+/*
+ * Builds the LSP data part. This func creates a new frag whenever
+ * area->lsp_frag_threshold is exceeded.
+ */
+#if 1
+void
+lsp_build_nonpseudo (struct isis_lsp *lsp, struct isis_area *area)
+{
+ struct is_neigh *is_neigh;
+ struct listnode *node, *ipnode;
+ int level = lsp->level;
+ struct isis_circuit *circuit;
+ struct prefix_ipv4 *ipv4;
+ struct ipv4_reachability *ipreach;
+ struct isis_adjacency *nei;
+#ifdef HAVE_IPV6
+ struct prefix_ipv6 *ipv6;
+ struct ipv6_reachability *ip6reach;
+#endif /* HAVE_IPV6 */
+ struct tlvs tlv_data;
+ struct isis_lsp *lsp0 = lsp;
+ struct isis_passwd *passwd;
+
+ /*
+ * First add the tlvs related to area
+ */
+
+ /* Area addresses */
+ if (lsp->tlv_data.area_addrs == NULL)
+ lsp->tlv_data.area_addrs = list_new ();
+ list_add_list (lsp->tlv_data.area_addrs, area->area_addrs);
+ /* Protocols Supported */
+ if (area->ip_circuits > 0
+#ifdef HAVE_IPV6
+ || area->ipv6_circuits > 0
+#endif /* HAVE_IPV6 */
+ )
+ {
+ lsp->tlv_data.nlpids = XMALLOC (MTYPE_ISIS_TLV, sizeof (struct nlpids));
+ lsp->tlv_data.nlpids->count = 0;
+ if (area->ip_circuits > 0) {
+ lsp->tlv_data.nlpids->count++;
+ lsp->tlv_data.nlpids->nlpids[0] = NLPID_IP;
+ }
+#ifdef HAVE_IPV6
+ if (area->ipv6_circuits > 0) {
+ lsp->tlv_data.nlpids->count++;
+ lsp->tlv_data.nlpids->nlpids[lsp->tlv_data.nlpids->count - 1] =
+ NLPID_IPV6;
+ }
+#endif /* HAVE_IPV6 */
+ }
+ /* Dynamic Hostname */
+ if (area->dynhostname) {
+ lsp->tlv_data.hostname = XMALLOC (MTYPE_ISIS_TLV,
+ sizeof (struct hostname));
+ memcpy (lsp->tlv_data.hostname->name, host.name, strlen (host.name));
+ lsp->tlv_data.hostname->namelen = strlen (host.name);
+ }
+
+ /*
+ * Building the zero lsp
+ */
+ stream_set_putp (lsp->pdu, ISIS_FIXED_HDR_LEN + ISIS_LSP_HDR_LEN);
+ /*
+ * Add the authentication info if its present
+ */
+ (level == 1) ? (passwd = &area->area_passwd) :
+ (passwd = &area->domain_passwd);
+ if (passwd->type) {
+ memcpy (&lsp->tlv_data.auth_info, passwd, sizeof (struct isis_passwd));
+ tlv_add_authinfo (passwd->type, passwd->len,
+ passwd->passwd, lsp->pdu);
+ }
+ if (lsp->tlv_data.nlpids)
+ tlv_add_nlpid (lsp->tlv_data.nlpids, lsp->pdu);
+ if (lsp->tlv_data.hostname)
+ tlv_add_dynamic_hostname (lsp->tlv_data.hostname, lsp->pdu);
+ if (lsp->tlv_data.area_addrs && listcount (lsp->tlv_data.area_addrs) > 0 )
+ tlv_add_area_addrs (lsp->tlv_data.area_addrs, lsp->pdu);
+
+ memset (&tlv_data, 0, sizeof (struct tlvs));
+ /*
+ * Then build lists of tlvs related to circuits
+ */
+ for (node = listhead (area->circuit_list); node; nextnode (node)) {
+ circuit = getdata (node);
+ if (circuit->state != C_STATE_UP)
+ continue;
+
+ /*
+ * Add IPv4 internal reachability of this circuit
+ */
+ if (circuit->ip_router && circuit->ip_addrs &&
+ circuit->ip_addrs->count > 0) {
+ if (tlv_data.ipv4_int_reachs == NULL) {
+ tlv_data.ipv4_int_reachs = list_new ();
+ }
+ for (ipnode = listhead (circuit->ip_addrs); ipnode; nextnode (ipnode)) {
+ ipv4 = getdata (ipnode);
+ ipreach = XMALLOC (MTYPE_ISIS_TLV, sizeof (struct ipv4_reachability));
+ ipreach->metrics = circuit->metrics[level - 1];
+ ipreach->prefix = ipv4->prefix;
+ masklen2ip (ipv4->prefixlen, &ipreach->mask);
+ listnode_add (tlv_data.ipv4_int_reachs, ipreach);
+ }
+
+ }
+#ifdef HAVE_IPV6
+ /*
+ * Add IPv6 reachability of this circuit
+ */
+ if (circuit->ipv6_router && circuit->ipv6_non_link &&
+ circuit->ipv6_non_link->count > 0) {
+
+ if (tlv_data.ipv6_reachs == NULL) {
+ tlv_data.ipv6_reachs = list_new ();
+ }
+ for (ipnode = listhead (circuit->ipv6_non_link); ipnode;
+ nextnode (ipnode)) {
+ ipv6 = getdata (ipnode);
+ ip6reach = XMALLOC (MTYPE_ISIS_TLV, sizeof (struct ipv6_reachability));
+ memset (ip6reach, 0, sizeof (struct ipv6_reachability));
+ ip6reach->metric = htonl(circuit->metrics[level - 1].metric_default);
+ ip6reach->control_info = 0;
+ ip6reach->prefix_len = ipv6->prefixlen;
+ memcpy (ip6reach->prefix, ipv6->prefix.s6_addr,
+ (ipv6->prefixlen + 7) / 8);
+ listnode_add (tlv_data.ipv6_reachs, ip6reach);
+ }
+ }
+#endif /* HAVE_IPV6 */
+
+ switch (circuit->circ_type) {
+ case CIRCUIT_T_BROADCAST:
+ if (level & circuit->circuit_is_type) {
+ if (tlv_data.is_neighs == NULL) {
+ tlv_data.is_neighs = list_new ();
+ }
+ is_neigh = XMALLOC (MTYPE_ISIS_TLV, sizeof (struct is_neigh));
+ memset (is_neigh, 0, sizeof (struct is_neigh));
+ if (level == 1)
+ memcpy (is_neigh->neigh_id,
+ circuit->u.bc.l1_desig_is, ISIS_SYS_ID_LEN + 1);
+ else
+ memcpy (is_neigh->neigh_id,
+ circuit->u.bc.l2_desig_is, ISIS_SYS_ID_LEN + 1);
+ is_neigh->metrics = circuit->metrics[level - 1];
+ listnode_add (tlv_data.is_neighs, is_neigh);
+ }
+ break;
+ case CIRCUIT_T_P2P:
+ nei = circuit->u.p2p.neighbor;
+ if (nei && (level & nei->circuit_t)) {
+ if (tlv_data.is_neighs == NULL) {
+ tlv_data.is_neighs = list_new ();
+ tlv_data.is_neighs->del = free_tlv;
+ }
+ is_neigh = XMALLOC (MTYPE_ISIS_TLV, sizeof (struct is_neigh));
+ memset (is_neigh, 0, sizeof (struct is_neigh));
+ memcpy (is_neigh->neigh_id, nei->sysid, ISIS_SYS_ID_LEN);
+ is_neigh->metrics = circuit->metrics[level - 1];
+ listnode_add (tlv_data.is_neighs, is_neigh);
+ }
+ break;
+ case CIRCUIT_T_STATIC_IN:
+ zlog_warn ("lsp_area_create: unsupported circuit type");
+ break;
+ case CIRCUIT_T_STATIC_OUT:
+ zlog_warn ("lsp_area_create: unsupported circuit type");
+ break;
+ case CIRCUIT_T_DA:
+ zlog_warn ("lsp_area_create: unsupported circuit type");
+ break;
+ default:
+ zlog_warn ("lsp_area_create: unknown circuit type");
+ }
+ }
+
+ while (tlv_data.ipv4_int_reachs && listcount(tlv_data.ipv4_int_reachs)) {
+ if (lsp->tlv_data.ipv4_int_reachs == NULL)
+ lsp->tlv_data.ipv4_int_reachs = list_new ();
+ lsp_tlv_fit (lsp, &tlv_data.ipv4_int_reachs,
+ &lsp->tlv_data.ipv4_int_reachs,
+ IPV4_REACH_LEN, area->lsp_frag_threshold,
+ tlv_add_ipv4_reachs);
+ if (tlv_data.ipv4_int_reachs && listcount(tlv_data.ipv4_int_reachs))
+ lsp = lsp_next_frag (LSP_FRAGMENT(lsp->lsp_header->lsp_id) + 1,
+ lsp0, area, level);
+ }
+
+#ifdef HAVE_IPV6
+ while (tlv_data.ipv6_reachs && listcount(tlv_data.ipv6_reachs)) {
+ if (lsp->tlv_data.ipv6_reachs == NULL)
+ lsp->tlv_data.ipv6_reachs = list_new ();
+ lsp_tlv_fit (lsp, &tlv_data.ipv6_reachs,
+ &lsp->tlv_data.ipv6_reachs,
+ IPV6_REACH_LEN, area->lsp_frag_threshold,
+ tlv_add_ipv6_reachs);
+ if (tlv_data.ipv6_reachs && listcount(tlv_data.ipv6_reachs))
+ lsp = lsp_next_frag (LSP_FRAGMENT(lsp->lsp_header->lsp_id) + 1,
+ lsp0, area, level);
+ }
+#endif /* HAVE_IPV6 */
+
+ while (tlv_data.is_neighs && listcount(tlv_data.is_neighs)) {
+ if (lsp->tlv_data.is_neighs == NULL)
+ lsp->tlv_data.is_neighs = list_new ();
+ lsp_tlv_fit (lsp, &tlv_data.is_neighs,
+ &lsp->tlv_data.is_neighs,
+ IS_NEIGHBOURS_LEN, area->lsp_frag_threshold,
+ tlv_add_is_neighs);
+ if (tlv_data.is_neighs && listcount(tlv_data.is_neighs))
+ lsp = lsp_next_frag (LSP_FRAGMENT(lsp->lsp_header->lsp_id) + 1,
+ lsp0, area, level);
+ }
+
+
+ return;
+}
+#endif
+
+void
+build_lsp_data (struct isis_lsp *lsp, struct isis_area *area)
+{
+ struct list *circuit_list = area->circuit_list;
+ struct isis_circuit *circuit;
+ u_char *tlv_ptr;
+ struct is_neigh *is_neigh;
+
+
+ /* add our nlpids */
+ /* the 2 is for the TL plus 1 for the nlpid*/
+ tlv_ptr = lsppdu_realloc (lsp,MTYPE_ISIS_TLV, 3);
+ *tlv_ptr = PROTOCOLS_SUPPORTED; /* Type */
+ *(tlv_ptr+1) = 1; /* one protocol */
+#ifdef HAVE_IPV6 /*dunno if its right*/
+ *(tlv_ptr+2) = NLPID_IPV6;
+#else
+ *(tlv_ptr+2) = NLPID_IP;
+#endif /* HAVE_IPV6 */
+
+ /* we should add our areas here
+ * FIXME: we need to figure out which should be added? Adj? All? First? */
+
+ /* first, lets add ourselves to the IS neighbours info */
+ /* the 2 is for the TL plus 1 for the virtual field*/
+ tlv_ptr = lsppdu_realloc(lsp,MTYPE_ISIS_TLV, 3);
+ *tlv_ptr = IS_NEIGHBOURS; /* Type */
+ *(tlv_ptr+2) = 0; /* virtual is zero */
+ lsp->tlv_data.is_neighs = list_new (); /* new list of is_neighbours */
+ /* assign space for the is_neigh at the pdu end */
+ is_neigh = (struct is_neigh*) lsppdu_realloc(lsp,MTYPE_ISIS_TLV,
+ sizeof(struct is_neigh));
+ /* add this node to our list */
+ listnode_add (lsp->tlv_data.is_neighs, is_neigh);
+ /* FIXME: Do we need our designated address here? */
+ memcpy (&is_neigh->neigh_id, isis->sysid, ISIS_SYS_ID_LEN + 1);
+ /* FIXME: Where should we really get our own LSPs metrics from? */
+ circuit = (struct isis_circuit*)listhead(circuit_list);
+ /* is_neigh->metrics = circuit->metrics[lsp->level -1];*/
+ /* Length */
+ *(tlv_ptr+1)=(lsp->tlv_data.is_neighs->count * sizeof(struct is_neigh) +1);
+
+ /* FIXME: scan for adjencecies and add them */
+
+ /* FIXME: add reachability info */
+
+ /* adding dynamic hostname if needed*/
+ if (area->dynhostname) {
+ tlv_ptr = lsppdu_realloc (lsp,MTYPE_ISIS_TLV, 2); /* the 2 is for the TL */
+ *tlv_ptr = DYNAMIC_HOSTNAME; /* Type */
+ *(tlv_ptr+1) = strlen (host.name); /* Length */
+ lsp->tlv_data.hostname = (struct hostname *)
+ (lsppdu_realloc(lsp,
+ MTYPE_ISIS_TLV,
+ /* the -1 is to fit the length in the struct */
+ strlen (host.name)) - 1);
+ memcpy (lsp->tlv_data.hostname->name, host.name, strlen(host.name));
+ }
+
+}
+
+/*
+ * 7.3.7 Generation on non-pseudonode LSPs
+ */
+int
+lsp_generate_non_pseudo (struct isis_area *area, int level) {
+
+ struct isis_lsp *oldlsp, *newlsp;
+ u_int32_t seq_num = 0;
+ u_char lspid[ISIS_SYS_ID_LEN + 2];
+
+ memset (&lspid, 0, ISIS_SYS_ID_LEN + 2);
+ memcpy (&lspid, isis->sysid, ISIS_SYS_ID_LEN);
+
+ /* only builds the lsp if the area shares the level */
+ if ((area->is_type & level) == level) {
+ oldlsp = lsp_search (lspid, area->lspdb[level-1]);
+ if (oldlsp) {
+ seq_num = ntohl (oldlsp->lsp_header->seq_num);
+ lsp_search_and_destroy (oldlsp->lsp_header->lsp_id,
+ area->lspdb[level-1]);
+ /* FIXME: we should actually initiate a purge */
+ }
+ newlsp = lsp_new (lspid, area->max_lsp_lifetime[level-1], seq_num,
+ area->is_type, 0, level);
+ newlsp->own_lsp = 1;
+
+ lsp_insert (newlsp, area->lspdb[level-1]);
+ /* build_lsp_data (newlsp, area); */
+ lsp_build_nonpseudo (newlsp, area);
+ /* time to calculate our checksum */
+ lsp_seqnum_update (newlsp);
+ }
+
+
+ /* DEBUG_ADJ_PACKETS */
+ if (isis->debugs & DEBUG_ADJ_PACKETS) {
+ /* FIXME: is this place right? fix missing info */
+ zlog_info ("ISIS-Upd (%s): Building L%d LSP",
+ area->area_tag, level);
+ }
+
+ return ISIS_OK;
+}
+
+/*
+ * 7.3.9 Generation of level 1 LSPs (non-pseudonode)
+ */
+int
+lsp_l1_generate (struct isis_area *area)
+{
+
+ area->t_lsp_refresh[0] = thread_add_timer (master, lsp_refresh_l1, area,
+ MAX_LSP_GEN_INTERVAL);
+
+ return lsp_generate_non_pseudo (area, 1);
+}
+
+
+/*
+ * 7.3.9 Generation of level 2 LSPs (non-pseudonode)
+ */
+int
+lsp_l2_generate (struct isis_area *area)
+{
+
+ area->t_lsp_refresh[1] = thread_add_timer (master, lsp_refresh_l2, area,
+ MAX_LSP_GEN_INTERVAL);
+
+ return lsp_generate_non_pseudo (area, 2);
+}
+
+int
+lsp_non_pseudo_regenerate (struct isis_area *area, int level)
+{
+ dict_t *lspdb = area->lspdb[level - 1];
+ struct isis_lsp *lsp, *frag;
+ struct listnode *node;
+ u_char lspid[ISIS_SYS_ID_LEN + 2];
+
+ memset (lspid, 0, ISIS_SYS_ID_LEN + 2);
+ memcpy (lspid, isis->sysid, ISIS_SYS_ID_LEN);
+
+ lsp = lsp_search (lspid, lspdb);
+
+ if (!lsp) {
+ zlog_err ("ISIS-Upd (%s): lsp_non_pseudo_regenerate(): no L%d LSP found!",
+ area->area_tag,
+ level);
+
+ return ISIS_ERROR;
+ }
+
+ lsp_clear_data (lsp);
+ lsp_build_nonpseudo (lsp, area);
+ lsp->lsp_header->rem_lifetime = htons (isis_jitter
+ (area->max_lsp_lifetime[level-1],
+ MAX_AGE_JITTER));
+ lsp_seqnum_update (lsp);
+
+ if (isis->debugs & DEBUG_UPDATE_PACKETS) {
+ zlog_info ("ISIS-Upd (%s): refreshing our L%d LSP %s, "
+ "seq 0x%08x, cksum 0x%04x lifetime %us",
+ area->area_tag,
+ level,
+ rawlspid_print (lsp->lsp_header->lsp_id),
+ ntohl(lsp->lsp_header->seq_num),
+ ntohs(lsp->lsp_header->checksum),
+ ntohs(lsp->lsp_header->rem_lifetime));
+ }
+
+ lsp->last_generated = time (NULL);
+ area->lsp_regenerate_pending[level - 1] = 0;
+ ISIS_FLAGS_SET_ALL (lsp->SRMflags);
+ for (node = listhead (lsp->lspu.frags); node; nextnode(node)) {
+ frag = getdata (node);
+ frag->lsp_header->rem_lifetime = htons (isis_jitter
+ (area->max_lsp_lifetime[level-1],
+ MAX_AGE_JITTER));
+ ISIS_FLAGS_SET_ALL (frag->SRMflags);
+ }
+
+ if (area->ip_circuits)
+ isis_spf_schedule (area, level);
+#ifdef HAVE_IPV6
+ if (area->ipv6_circuits)
+ isis_spf_schedule6 (area, level);
+#endif
+ return ISIS_OK;
+}
+
+
+/*
+ * Done at least every MAX_LSP_GEN_INTERVAL. Search own LSPs, update holding
+ * time and set SRM
+ */
+int
+lsp_refresh_l1 (struct thread *thread)
+{
+ struct isis_area *area;
+ unsigned long ref_time;
+
+ area = THREAD_ARG (thread);
+ assert (area);
+
+ area->t_lsp_refresh[0] = NULL;
+ if (area->is_type & IS_LEVEL_1)
+ lsp_non_pseudo_regenerate (area, 1);
+
+ ref_time = area->lsp_refresh[0] > MAX_LSP_GEN_INTERVAL ?
+ MAX_LSP_GEN_INTERVAL : area->lsp_refresh[0];
+
+ area->t_lsp_refresh[0] = thread_add_timer (master, lsp_refresh_l1, area,
+ isis_jitter (ref_time,
+ MAX_AGE_JITTER));
+ return ISIS_OK;
+}
+
+int
+lsp_refresh_l2 (struct thread *thread)
+{
+ struct isis_area *area;
+ unsigned long ref_time;
+
+ area = THREAD_ARG (thread);
+ assert (area);
+
+ area->t_lsp_refresh[1] = NULL;
+ if (area->is_type & IS_LEVEL_2)
+ lsp_non_pseudo_regenerate (area, 2);
+
+ ref_time = area->lsp_refresh[1] > MAX_LSP_GEN_INTERVAL ?
+ MAX_LSP_GEN_INTERVAL : area->lsp_refresh[1];
+
+
+ area->t_lsp_refresh[1] = thread_add_timer (master, lsp_refresh_l2, area,
+ isis_jitter (ref_time,
+ MAX_AGE_JITTER));
+ return ISIS_OK;
+}
+
+
+/*
+ * Something has changed -> regenerate LSP
+ */
+
+int
+lsp_l1_regenerate (struct thread *thread)
+{
+ struct isis_area *area;
+
+ area = THREAD_ARG (thread);
+ area->lsp_regenerate_pending[0] = 0;
+
+ return lsp_non_pseudo_regenerate (area, 1);
+}
+
+int
+lsp_l2_regenerate (struct thread *thread)
+{
+ struct isis_area *area;
+
+ area = THREAD_ARG (thread);
+ area->lsp_regenerate_pending[1] = 0;
+
+ return lsp_non_pseudo_regenerate (area, 2);
+}
+
+int
+lsp_regenerate_schedule (struct isis_area *area)
+{
+ struct isis_lsp *lsp;
+ u_char id[ISIS_SYS_ID_LEN + 2];
+ time_t now, diff;
+ memcpy(id, isis->sysid, ISIS_SYS_ID_LEN);
+ LSP_PSEUDO_ID(id) = LSP_FRAGMENT(id) = 0;
+ now = time (NULL);
+ /*
+ * First level 1
+ */
+ if (area->is_type & IS_LEVEL_1) {
+ lsp = lsp_search (id, area->lspdb[0]);
+ if (!lsp || area->lsp_regenerate_pending[0])
+ goto L2;
+ /*
+ * Throttle avoidance
+ */
+ diff = now - lsp->last_generated;
+ if (diff < MIN_LSP_GEN_INTERVAL) {
+ area->lsp_regenerate_pending[0] = 1;
+ thread_add_timer (master, lsp_l1_regenerate, area,
+ MIN_LSP_GEN_INTERVAL - diff);
+ return ISIS_OK;
+ } else
+ lsp_non_pseudo_regenerate (area, 1);
+ }
+ /*
+ * then 2
+ */
+ L2:
+ if (area->is_type & IS_LEVEL_2) {
+ lsp = lsp_search (id, area->lspdb[1]);
+ if (!lsp || area->lsp_regenerate_pending[1])
+ return ISIS_OK;
+ /*
+ * Throttle avoidance
+ */
+ diff = now - lsp->last_generated;
+ if (diff < MIN_LSP_GEN_INTERVAL) {
+ area->lsp_regenerate_pending[1] = 1;
+ thread_add_timer (master, lsp_l2_regenerate, area,
+ MIN_LSP_GEN_INTERVAL - diff);
+ return ISIS_OK;
+ } else
+ lsp_non_pseudo_regenerate (area, 2);
+ }
+
+ return ISIS_OK;
+}
+
+/*
+ * Funcs for pseudonode LSPs
+ */
+
+/*
+ * 7.3.8 and 7.3.10 Generation of level 1 and 2 pseudonode LSPs
+ */
+void
+lsp_build_pseudo (struct isis_lsp *lsp, struct isis_circuit *circuit,
+ int level)
+{
+ struct isis_adjacency *adj;
+ struct is_neigh *is_neigh;
+ struct es_neigh *es_neigh;
+ struct list *adj_list;
+ struct listnode *node;
+ struct isis_passwd *passwd;
+
+ assert (circuit);
+ assert (circuit->circ_type == CIRCUIT_T_BROADCAST);
+
+ if (!circuit->u.bc.is_dr[level - 1])
+ return; /* we are not DIS on this circuit */
+
+ lsp->level = level;
+ if (level == 1)
+ lsp->lsp_header->lsp_bits |= IS_LEVEL_1;
+ else
+ lsp->lsp_header->lsp_bits |= IS_LEVEL_2;
+
+ /*
+ * add self to IS neighbours
+ */
+ if (lsp->tlv_data.is_neighs == NULL) {
+ lsp->tlv_data.is_neighs = list_new ();
+ lsp->tlv_data.is_neighs->del = free_tlv;
+ }
+ is_neigh = XMALLOC (MTYPE_ISIS_TLV, sizeof (struct is_neigh));
+ memset (is_neigh, 0, sizeof (struct is_neigh));
+ memcpy (&is_neigh->neigh_id, isis->sysid, ISIS_SYS_ID_LEN);
+ listnode_add (lsp->tlv_data.is_neighs, is_neigh);
+
+ adj_list = list_new();
+ isis_adj_build_up_list (circuit->u.bc.adjdb[level-1], adj_list);
+
+ for (node = listhead (adj_list); node; nextnode (node)){
+ adj = getdata (node);
+ if (adj->circuit_t & level) {
+ if ((level == 1 && adj->sys_type == ISIS_SYSTYPE_L1_IS) ||
+ (level == 1 && adj->sys_type == ISIS_SYSTYPE_L2_IS &&
+ adj->adj_usage == ISIS_ADJ_LEVEL1AND2) ||
+ (level == 2 && adj->sys_type == ISIS_SYSTYPE_L2_IS)) {
+ /* an IS neighbour -> add it */
+ is_neigh = XMALLOC (MTYPE_ISIS_TLV, sizeof (struct is_neigh));
+ memset (is_neigh, 0, sizeof (struct is_neigh));
+ memcpy (&is_neigh->neigh_id, adj->sysid, ISIS_SYS_ID_LEN);
+ listnode_add (lsp->tlv_data.is_neighs, is_neigh);
+ } else if (level == 1 && adj->sys_type == ISIS_SYSTYPE_ES) {
+ /* an ES neigbour add it, if we are building level 1 LSP */
+ /* FIXME: the tlv-format is hard to use here */
+ if (lsp->tlv_data.es_neighs == NULL) {
+ lsp->tlv_data.es_neighs = list_new ();
+ lsp->tlv_data.es_neighs->del = free_tlv;
+ }
+ es_neigh = XMALLOC (MTYPE_ISIS_TLV, sizeof (struct es_neigh));
+ memset (es_neigh, 0, sizeof (struct es_neigh));
+ memcpy (&es_neigh->first_es_neigh, adj->sysid, ISIS_SYS_ID_LEN);
+ listnode_add (lsp->tlv_data.es_neighs, is_neigh);
+ }
+ }
+ }
+
+ stream_set_putp (lsp->pdu, ISIS_FIXED_HDR_LEN + ISIS_LSP_HDR_LEN);
+ /*
+ * Add the authentication info if it's present
+ */
+ (level == 1) ? (passwd = &circuit->area->area_passwd) :
+ (passwd = &circuit->area->domain_passwd);
+ if (passwd->type) {
+ memcpy (&lsp->tlv_data.auth_info, passwd, sizeof (struct isis_passwd));
+ tlv_add_authinfo (passwd->type, passwd->len,
+ passwd->passwd, lsp->pdu);
+ }
+
+ if (lsp->tlv_data.is_neighs && listcount (lsp->tlv_data.is_neighs) > 0)
+ tlv_add_is_neighs (lsp->tlv_data.is_neighs, lsp->pdu);
+
+ if (lsp->tlv_data.es_neighs && listcount (lsp->tlv_data.es_neighs) > 0)
+ tlv_add_is_neighs (lsp->tlv_data.es_neighs, lsp->pdu);
+
+ lsp->lsp_header->pdu_len = htons (stream_get_putp (lsp->pdu));
+ iso_csum_create (STREAM_DATA (lsp->pdu) + 12,
+ ntohs(lsp->lsp_header->pdu_len) - 12, 12);
+
+ list_delete (adj_list);
+
+ return;
+}
+
+int
+lsp_pseudo_regenerate (struct isis_circuit *circuit, int level)
+{
+ dict_t *lspdb = circuit->area->lspdb[level - 1];
+ struct isis_lsp *lsp;
+ u_char lsp_id[ISIS_SYS_ID_LEN + 2];
+
+ memcpy (lsp_id, isis->sysid, ISIS_SYS_ID_LEN);
+ LSP_PSEUDO_ID(lsp_id) = circuit->circuit_id;
+ LSP_FRAGMENT(lsp_id) = 0;
+
+ lsp = lsp_search (lsp_id, lspdb);
+
+ if (!lsp) {
+ zlog_err ("lsp_pseudo_regenerate(): no l%d LSP %s found!", level,
+ rawlspid_print(lsp_id));
+ return ISIS_ERROR;
+ }
+ lsp_clear_data (lsp);
+
+ lsp_build_pseudo (lsp, circuit, level);
+
+ lsp->lsp_header->rem_lifetime =
+ htons (isis_jitter (circuit->area->max_lsp_lifetime[level - 1],
+ MAX_AGE_JITTER));
+
+ lsp_inc_seqnum (lsp, 0);
+
+ if (isis->debugs & DEBUG_UPDATE_PACKETS) {
+ zlog_info ("ISIS-Upd (%s): refreshing pseudo LSP L%d %s",
+ circuit->area->area_tag, level,
+ rawlspid_print (lsp->lsp_header->lsp_id));
+ }
+
+ lsp->last_generated = time (NULL);
+ ISIS_FLAGS_SET_ALL (lsp->SRMflags);
+
+ return ISIS_OK;
+}
+
+
+int
+lsp_l1_refresh_pseudo (struct thread *thread)
+{
+ struct isis_circuit *circuit;
+ int retval;
+ unsigned long ref_time;
+
+ circuit = THREAD_ARG(thread);
+
+ if (!circuit->u.bc.is_dr[0])
+ return ISIS_ERROR; /* FIXME: purge and such */
+
+ retval = lsp_pseudo_regenerate (circuit, 1);
+
+ ref_time = circuit->area->lsp_refresh[0] > MAX_LSP_GEN_INTERVAL ?
+ MAX_LSP_GEN_INTERVAL : circuit->area->lsp_refresh[0];
+
+ circuit->u.bc.t_refresh_pseudo_lsp[0] =
+ thread_add_timer (master, lsp_l1_refresh_pseudo, circuit,
+ isis_jitter (ref_time,
+ MAX_AGE_JITTER));
+ return retval;
+}
+
+int
+lsp_l1_pseudo_generate (struct isis_circuit *circuit)
+{
+ struct isis_lsp *lsp;
+ u_char id[ISIS_SYS_ID_LEN + 2];
+ unsigned long ref_time;
+
+ memcpy(id, isis->sysid, ISIS_SYS_ID_LEN);
+ LSP_FRAGMENT(id) = 0;
+ LSP_PSEUDO_ID(id) = circuit->circuit_id;
+
+ /*
+ * If for some reason have a pseudo LSP in the db already -> regenerate
+ */
+ if (lsp_search (id, circuit->area->lspdb[0]))
+ return lsp_pseudo_regenerate (circuit, 1);
+ lsp = lsp_new (id, circuit->area->max_lsp_lifetime[0],
+ 1, circuit->area->is_type, 0, 1);
+
+ lsp_build_pseudo (lsp, circuit, 1);
+
+ lsp->own_lsp = 1;
+ lsp_insert (lsp, circuit->area->lspdb[0]);
+ ISIS_FLAGS_SET_ALL (lsp->SRMflags);
+
+ ref_time = circuit->area->lsp_refresh[0] > MAX_LSP_GEN_INTERVAL ?
+ MAX_LSP_GEN_INTERVAL : circuit->area->lsp_refresh[0];
+
+
+ circuit->u.bc.t_refresh_pseudo_lsp[0] =
+ thread_add_timer (master, lsp_l1_refresh_pseudo, circuit,
+ isis_jitter (ref_time,
+ MAX_AGE_JITTER));
+
+ return lsp_regenerate_schedule (circuit->area);
+}
+
+int
+lsp_l2_refresh_pseudo (struct thread *thread)
+{
+ struct isis_circuit *circuit;
+ int retval;
+ unsigned long ref_time;
+ circuit = THREAD_ARG(thread);
+
+ if (!circuit->u.bc.is_dr[1])
+ return ISIS_ERROR; /* FIXME: purge and such */
+
+ retval = lsp_pseudo_regenerate (circuit, 2);
+
+ ref_time = circuit->area->lsp_refresh[1] > MAX_LSP_GEN_INTERVAL ?
+ MAX_LSP_GEN_INTERVAL : circuit->area->lsp_refresh[1];
+
+
+ circuit->u.bc.t_refresh_pseudo_lsp[1] =
+ thread_add_timer (master, lsp_l2_refresh_pseudo, circuit,
+ isis_jitter (ref_time,
+ MAX_AGE_JITTER));
+ return retval;
+}
+
+
+int
+lsp_l2_pseudo_generate (struct isis_circuit *circuit)
+{
+ struct isis_lsp *lsp;
+ u_char id[ISIS_SYS_ID_LEN + 2];
+ unsigned long ref_time;
+
+ memcpy(id, isis->sysid, ISIS_SYS_ID_LEN);
+ LSP_FRAGMENT(id) = 0;
+ LSP_PSEUDO_ID(id) = circuit->circuit_id;
+
+ if (lsp_search (id, circuit->area->lspdb[1]))
+ return lsp_pseudo_regenerate (circuit, 2);
+
+ lsp = lsp_new (id, circuit->area->max_lsp_lifetime[1],
+ 1, circuit->area->is_type, 0, 2);
+
+ lsp_build_pseudo (lsp, circuit, 2);
+
+ ref_time = circuit->area->lsp_refresh[1] > MAX_LSP_GEN_INTERVAL ?
+ MAX_LSP_GEN_INTERVAL : circuit->area->lsp_refresh[1];
+
+
+ lsp->own_lsp = 1;
+ lsp_insert (lsp, circuit->area->lspdb[1]);
+ ISIS_FLAGS_SET_ALL (lsp->SRMflags);
+
+ circuit->u.bc.t_refresh_pseudo_lsp[1] =
+ thread_add_timer (master, lsp_l2_refresh_pseudo, circuit,
+ isis_jitter (ref_time,
+ MAX_AGE_JITTER));
+
+ return lsp_regenerate_schedule (circuit->area);
+}
+
+
+
+/*
+ * Walk through LSPs for an area
+ * - set remaining lifetime
+ * - set LSPs with SRMflag set for sending
+ */
+int
+lsp_tick (struct thread *thread)
+{
+ struct isis_area *area;
+ struct isis_circuit *circuit;
+ struct isis_lsp *lsp;
+ struct list *lsp_list;
+ struct listnode *lspnode, *cnode;
+ dnode_t *dnode, *dnode_next;
+ int level;
+
+ lsp_list = list_new ();
+
+ area = THREAD_ARG (thread);
+ assert (area);
+ area->t_tick = thread_add_timer (master, lsp_tick, area, 1);
+
+ /*
+ * Build a list of LSPs with (any) SRMflag set
+ * and removed the ones that have aged out
+ */
+ for (level = 0; level < ISIS_LEVELS; level++) {
+ if (area->lspdb[level] && dict_count (area->lspdb[level]) > 0) {
+ dnode = dict_first (area->lspdb[level]);
+ while (dnode != NULL) {
+ dnode_next = dict_next (area->lspdb[level], dnode);
+ lsp = dnode_get (dnode);
+ lsp_set_time (lsp);
+ if (lsp->age_out == 0) {
+
+ zlog_info ("ISIS-Upd (%s): L%u LSP %s seq 0x%08x aged out",
+ area->area_tag,
+ lsp->level,
+ rawlspid_print (lsp->lsp_header->lsp_id),
+ ntohl(lsp->lsp_header->seq_num));
+
+ lsp_destroy (lsp);
+ dict_delete (area->lspdb[level], dnode);
+ } else if (flags_any_set (lsp->SRMflags))
+ listnode_add (lsp_list, lsp);
+ dnode = dnode_next;
+ }
+
+ /*
+ * Send LSPs on circuits indicated by the SRMflags
+ */
+ if (listcount (lsp_list) > 0) {
+ for (cnode = listhead (area->circuit_list); cnode; nextnode (cnode)) {
+ circuit = getdata (cnode);
+ for (lspnode = listhead (lsp_list); lspnode; nextnode (lspnode)) {
+ lsp = getdata (lspnode);
+ if (ISIS_CHECK_FLAG (lsp->SRMflags, circuit)) {
+ /* FIXME: if same or elder lsp is already in lsp queue */
+ listnode_add (circuit->lsp_queue, lsp);
+ thread_add_event (master, send_lsp, circuit, 0);
+ }
+ }
+ }
+ }
+ list_delete_all_node (lsp_list);
+ }
+ }
+
+ list_delete (lsp_list);
+
+ return ISIS_OK;
+}
+
+
+void
+lsp_purge_dr (u_char *id, struct isis_circuit *circuit, int level)
+{
+ struct isis_lsp *lsp;
+
+ lsp = lsp_search (id, circuit->area->lspdb[level - 1]);
+
+ if (lsp && lsp->purged == 0) {
+ lsp->lsp_header->rem_lifetime = htons (0);
+ lsp->lsp_header->pdu_len = htons (ISIS_FIXED_HDR_LEN + ISIS_LSP_HDR_LEN);
+ lsp->purged = 0;
+ iso_csum_create (STREAM_DATA (lsp->pdu) + 12,
+ ntohs(lsp->lsp_header->pdu_len) - 12, 12);
+ ISIS_FLAGS_SET_ALL(lsp->SRMflags);
+ }
+
+
+ return;
+}
+
+/*
+ * Purge own LSP that is received and we don't have.
+ * -> Do as in 7.3.16.4
+ */
+void
+lsp_purge_non_exist (struct isis_link_state_hdr *lsp_hdr,
+ struct isis_area *area)
+{
+ struct isis_lsp *lsp;
+
+ /*
+ * We need to create the LSP to be purged
+ */
+ zlog_info ("LSP PURGE NON EXIST");
+ lsp = XMALLOC (MTYPE_ISIS_LSP, sizeof (struct isis_lsp));
+ memset (lsp, 0, sizeof (struct isis_lsp));
+ /*FIXME: BUG BUG BUG! the lsp doesn't exist here!*/
+ /*did smt here, maybe good probably not*/
+ lsp->level = ((lsp_hdr->lsp_bits & LSPBIT_IST) == IS_LEVEL_1) ? 1 : 2;
+ lsp->pdu = stream_new (ISIS_FIXED_HDR_LEN + ISIS_LSP_HDR_LEN);
+ lsp->isis_header = (struct isis_fixed_hdr*)STREAM_DATA(lsp->pdu);
+ fill_fixed_hdr (lsp->isis_header, (lsp->level == 1) ? L1_LINK_STATE
+ : L2_LINK_STATE);
+ lsp->lsp_header = (struct isis_link_state_hdr*)(STREAM_DATA(lsp->pdu) +
+ ISIS_FIXED_HDR_LEN);
+ memcpy (lsp->lsp_header, lsp_hdr, ISIS_LSP_HDR_LEN);
+
+ /*
+ * Retain only LSP header
+ */
+ lsp->lsp_header->pdu_len = htons (ISIS_FIXED_HDR_LEN + ISIS_LSP_HDR_LEN);
+ /*
+ * Set the remaining lifetime to 0
+ */
+ lsp->lsp_header->rem_lifetime = 0;
+ /*
+ * Put the lsp into LSPdb
+ */
+ lsp_insert (lsp, area->lspdb[lsp->level-1]);
+
+ /*
+ * Send in to whole area
+ */
+ ISIS_FLAGS_SET_ALL (lsp->SRMflags);
+
+ return;
+}
+
+#ifdef TOPOLOGY_GENERATE
+int
+top_lsp_refresh (struct thread *thread)
+{
+ struct isis_lsp *lsp;
+
+ lsp = THREAD_ARG (thread);
+ assert (lsp);
+
+ lsp->t_lsp_top_ref = NULL;
+
+ lsp->lsp_header->rem_lifetime = htons (isis_jitter(MAX_AGE,MAX_AGE_JITTER));
+ lsp->lsp_header->seq_num = htonl(ntohl(lsp->lsp_header->seq_num) +1);
+
+ ISIS_FLAGS_SET_ALL (lsp->SRMflags);
+ if (isis->debugs & DEBUG_UPDATE_PACKETS) {
+ zlog_info ("ISIS-Upd (): refreshing Topology L1 %s",
+ rawlspid_print (lsp->lsp_header->lsp_id));
+ }
+
+ /* time to calculate our checksum */
+ iso_csum_create (STREAM_DATA (lsp->pdu) + 12,
+ ntohs(lsp->lsp_header->pdu_len) - 12, 12);
+
+ lsp->t_lsp_top_ref = thread_add_timer (master, top_lsp_refresh, lsp,
+ isis_jitter (MAX_LSP_GEN_INTERVAL,
+ MAX_LSP_GEN_JITTER));
+
+ return ISIS_OK;
+}
+
+void
+generate_topology_lsps (struct isis_area *area)
+{
+ struct listnode *node;
+ int i, max = 0;
+ struct arc *arc;
+ u_char lspid[ISIS_SYS_ID_LEN + 2];
+ struct isis_lsp *lsp;
+
+ /* first we find the maximal node */
+ LIST_LOOP (area->topology, arc, node) {
+ if (arc->from_node > max) max = arc->from_node;
+ if (arc->to_node > max) max = arc->to_node;
+ }
+
+
+ for (i = 1; i < (max+1); i++) {
+ memcpy (lspid,area->topology_baseis,ISIS_SYS_ID_LEN);
+ LSP_PSEUDO_ID (lspid) = 0x00;
+ LSP_FRAGMENT (lspid) = 0x00;
+ lspid[ISIS_SYS_ID_LEN-1] = (i & 0xFF);
+ lspid[ISIS_SYS_ID_LEN-2] = ((i >> 8) & 0xFF);
+
+ lsp = lsp_new (lspid, isis_jitter (area->max_lsp_lifetime[0],
+ MAX_AGE_JITTER), 1, IS_LEVEL_1, 0, 1);
+ lsp->from_topology = 1;
+ /* creating data based on topology */
+ build_topology_lsp_data (lsp,area,i);
+ /* time to calculate our checksum */
+ iso_csum_create (STREAM_DATA (lsp->pdu) + 12,
+ ntohs(lsp->lsp_header->pdu_len) - 12, 12);
+ lsp->t_lsp_top_ref = thread_add_timer (master, top_lsp_refresh, lsp,
+ isis_jitter(MAX_LSP_GEN_INTERVAL,
+ MAX_LSP_GEN_JITTER));
+
+ ISIS_FLAGS_SET_ALL(lsp->SRMflags);
+ lsp_insert (lsp,area->lspdb[0]);
+
+ }
+}
+
+void
+remove_topology_lsps (struct isis_area *area)
+{
+ struct isis_lsp *lsp;
+ dnode_t *dnode, *dnode_next;
+
+ dnode = dict_first (area->lspdb[0]);
+ while (dnode != NULL) {
+ dnode_next = dict_next (area->lspdb[0], dnode);
+ lsp = dnode_get (dnode);
+ if (lsp->from_topology) {
+ thread_cancel(lsp->t_lsp_top_ref);
+ lsp_destroy (lsp);
+ dict_delete (area->lspdb[0], dnode);
+ }
+ dnode = dnode_next;
+ }
+}
+
+void
+build_topology_lsp_data (struct isis_lsp *lsp, struct isis_area *area,
+ int lsp_top_num)
+{
+ struct listnode *node;
+ struct arc *arc;
+ u_char *tlv_ptr;
+ struct is_neigh *is_neigh;
+ int to_lsp = 0;
+ char buff[200];
+
+ /* add our nlpids */
+ /* the 2 is for the TL plus 1 for the nlpid*/
+ tlv_ptr = lsppdu_realloc (lsp,MTYPE_ISIS_TLV, 3);
+ *tlv_ptr = PROTOCOLS_SUPPORTED; /* Type */
+ *(tlv_ptr+1) = 1; /* one protocol */
+ *(tlv_ptr+2) = NLPID_IP;
+ lsp->tlv_data.nlpids = (struct nlpids*)(tlv_ptr+1);
+
+ /* first, lets add the tops */
+ /* the 2 is for the TL plus 1 for the virtual field*/
+ tlv_ptr = lsppdu_realloc (lsp ,MTYPE_ISIS_TLV, 3);
+ *tlv_ptr = IS_NEIGHBOURS; /* Type */
+ *(tlv_ptr+1) = 1; /* this is the virtual char len*/
+ *(tlv_ptr+2) = 0; /* virtual is zero */
+ lsp->tlv_data.is_neighs = list_new (); /* new list of is_neighbours */
+
+ /* add reachability for this IS for simulated 1 */
+ if (lsp_top_num == 1) {
+ /* assign space for the is_neigh at the pdu end */
+ is_neigh = (struct is_neigh*) lsppdu_realloc(lsp, MTYPE_ISIS_TLV,
+ sizeof(struct is_neigh));
+ /* add this node to our list */
+ listnode_add (lsp->tlv_data.is_neighs, is_neigh);
+ memcpy (&is_neigh->neigh_id, isis->sysid, ISIS_SYS_ID_LEN);
+ LSP_PSEUDO_ID (is_neigh->neigh_id) = 0x00;
+ is_neigh->metrics.metric_default = 0x00; /* no special reason */
+ is_neigh->metrics.metric_delay = METRICS_UNSUPPORTED;
+ is_neigh->metrics.metric_expense = METRICS_UNSUPPORTED;
+ is_neigh->metrics.metric_error = METRICS_UNSUPPORTED;
+ /* don't forget the length */
+ *(tlv_ptr+1) += IS_NEIGHBOURS_LEN; /* the -1 is the virtual */
+ /* no need to check for fragging here, it is a lonely is_reach */
+ }
+
+ /* addding is reachabilities */
+ LIST_LOOP (area->topology, arc, node) {
+ if ((arc->from_node == lsp_top_num) ||
+ (arc->to_node == lsp_top_num)) {
+ if (arc->to_node == lsp_top_num) to_lsp = arc->from_node;
+ if (arc->from_node == lsp_top_num) to_lsp = arc->to_node;
+
+ /* if the length here is about to cross the FF limit, we reTLV */
+ if (*(tlv_ptr+1) >= (0xFF - IS_NEIGHBOURS_LEN)) {
+ /* retlv */
+ /* the 2 is for the TL plus 1 for the virtual field*/
+ tlv_ptr = lsppdu_realloc(lsp,MTYPE_ISIS_TLV, 3);
+ *tlv_ptr = IS_NEIGHBOURS; /* Type */
+ *(tlv_ptr+1) = 1; /* this is the virtual char len*/
+ *(tlv_ptr+2) = 0; /* virtual is zero */
+ }
+ /* doing this here assures us that we won't add an "empty" tlv */
+ /* assign space for the is_neigh at the pdu end */
+ is_neigh = (struct is_neigh*) lsppdu_realloc (lsp, MTYPE_ISIS_TLV,
+ sizeof(struct is_neigh));
+ /* add this node to our list */
+ listnode_add (lsp->tlv_data.is_neighs, is_neigh);
+ memcpy (&is_neigh->neigh_id, area->topology_baseis, ISIS_SYS_ID_LEN);
+ LSP_PSEUDO_ID (is_neigh->neigh_id) = 0x00;
+ is_neigh->neigh_id[ISIS_SYS_ID_LEN-1] = (to_lsp & 0xFF);
+ is_neigh->neigh_id[ISIS_SYS_ID_LEN-2] = ((to_lsp >> 8) & 0xFF);
+ is_neigh->metrics.metric_default = arc->distance;
+ is_neigh->metrics.metric_delay = METRICS_UNSUPPORTED;
+ is_neigh->metrics.metric_expense = METRICS_UNSUPPORTED;
+ is_neigh->metrics.metric_error = METRICS_UNSUPPORTED;
+ /* don't forget the length */
+ *(tlv_ptr+1) += IS_NEIGHBOURS_LEN; /* the -1 is the virtual */
+ }
+ }
+
+ /* adding dynamic hostname if needed*/
+ if (area->dynhostname) {
+ memset (buff,0x00,200);
+ sprintf (buff,"feedme%d",lsp_top_num);
+ tlv_ptr = lsppdu_realloc (lsp,MTYPE_ISIS_TLV, 2); /* the 2 is for the TL */
+ *tlv_ptr = DYNAMIC_HOSTNAME; /* Type */
+ *(tlv_ptr+1) = strlen (buff); /* Length */
+ /* the -1 is to fit the length in the struct */
+ lsp->tlv_data.hostname = (struct hostname *)
+ (lsppdu_realloc (lsp, MTYPE_ISIS_TLV, strlen(buff)) - 1);
+ memcpy (lsp->tlv_data.hostname->name, buff, strlen(buff));
+ }
+
+ /* thanks to hannes, another bug bites the dust */
+ lsp->pdu->putp = ntohs(lsp->lsp_header->pdu_len);
+ lsp->pdu->endp = ntohs(lsp->lsp_header->pdu_len);
+}
+#endif /* TOPOLOGY_GENERATE */