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* isis_lsp.c: Support for originating TE IS and IPv4 TLV's. No any sub
TLV handling yet.
This commit is contained in:
hasso
parent
ea3be4c122
commit
aa4376ec0c
@ -1,3 +1,8 @@
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2005-09-26 Hasso Tepper <hasso at quagga.net>
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* isis_lsp.c: Support for originating TE IS and IPv4 TLV's. No any sub
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TLV handling yet.
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2005-09-26 Hasso Tepper <hasso at quagga.net>
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* isis_tlv.[ch]: Two new functions - tlv_add_te_is_neighs() and
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138
isisd/isis_lsp.c
138
isisd/isis_lsp.c
@ -120,6 +120,8 @@ lsp_clear_data (struct isis_lsp *lsp)
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}
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if (lsp->tlv_data.is_neighs)
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list_delete (lsp->tlv_data.is_neighs);
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if (lsp->tlv_data.te_is_neighs)
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list_delete (lsp->tlv_data.te_is_neighs);
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if (lsp->tlv_data.area_addrs)
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list_delete (lsp->tlv_data.area_addrs);
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if (lsp->tlv_data.es_neighs)
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@ -130,6 +132,8 @@ lsp_clear_data (struct isis_lsp *lsp)
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list_delete (lsp->tlv_data.ipv4_int_reachs);
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if (lsp->tlv_data.ipv4_ext_reachs)
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list_delete (lsp->tlv_data.ipv4_ext_reachs);
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if (lsp->tlv_data.te_ipv4_reachs)
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list_delete (lsp->tlv_data.te_ipv4_reachs);
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#ifdef HAVE_IPV6
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if (lsp->tlv_data.ipv6_addrs)
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list_delete (lsp->tlv_data.ipv6_addrs);
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@ -922,6 +926,8 @@ lsp_print_all (struct vty *vty, dict_t * lspdb, char detail, char dynhost)
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#define FRAG_NEEDED(S,T,I) \
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(STREAM_SIZE(S)-STREAM_REMAIN(S)+(I) > FRAG_THOLD(S,T))
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/* FIXME: It shouldn't be necessary to pass tlvsize here, TLVs can have
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* variable length (TE TLVs, sub TLVs). */
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static void
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lsp_tlv_fit (struct isis_lsp *lsp, struct list **from, struct list **to,
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int tlvsize, int frag_thold,
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@ -1008,11 +1014,13 @@ static void
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lsp_build_nonpseudo (struct isis_lsp *lsp, struct isis_area *area)
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{
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struct is_neigh *is_neigh;
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struct te_is_neigh *te_is_neigh;
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struct listnode *node, *nnode, *ipnode, *ipnnode;
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int level = lsp->level;
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struct isis_circuit *circuit;
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struct prefix_ipv4 *ipv4;
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struct ipv4_reachability *ipreach;
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struct te_ipv4_reachability *te_ipreach;
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struct isis_adjacency *nei;
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#ifdef HAVE_IPV6
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struct prefix_ipv6 *ipv6, *ip6prefix;
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@ -1125,7 +1133,10 @@ lsp_build_nonpseudo (struct isis_lsp *lsp, struct isis_area *area)
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if (area->topology && level == 1)
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{
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if (tlv_data.is_neighs == NULL)
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{
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tlv_data.is_neighs = list_new ();
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tlv_data.is_neighs->del = free_tlv;
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}
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is_neigh = XMALLOC (MTYPE_ISIS_TLV, sizeof (struct is_neigh));
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memset (is_neigh, 0, sizeof (struct is_neigh));
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@ -1153,6 +1164,8 @@ lsp_build_nonpseudo (struct isis_lsp *lsp, struct isis_area *area)
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*/
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if (circuit->ip_router && circuit->ip_addrs &&
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circuit->ip_addrs->count > 0)
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{
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if (area->oldmetric)
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{
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if (tlv_data.ipv4_int_reachs == NULL)
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{
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@ -1162,14 +1175,35 @@ lsp_build_nonpseudo (struct isis_lsp *lsp, struct isis_area *area)
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for (ALL_LIST_ELEMENTS (circuit->ip_addrs, ipnode, ipnnode, ipv4))
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{
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ipreach =
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XCALLOC (MTYPE_ISIS_TLV, sizeof (struct ipv4_reachability));
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XMALLOC (MTYPE_ISIS_TLV, sizeof (struct ipv4_reachability));
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ipreach->metrics = circuit->metrics[level - 1];
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masklen2ip (ipv4->prefixlen, &ipreach->mask);
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ipreach->prefix.s_addr = ((ipreach->mask.s_addr) &
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(ipv4->prefix.s_addr));
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listnode_add (tlv_data.ipv4_int_reachs, ipreach);
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}
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tlv_data.ipv4_int_reachs->del = free_tlv;
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}
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if (area->newmetric)
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{
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if (tlv_data.te_ipv4_reachs == NULL)
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{
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tlv_data.te_ipv4_reachs = list_new ();
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tlv_data.te_ipv4_reachs->del = free_tlv;
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}
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for (ALL_LIST_ELEMENTS (circuit->ip_addrs, ipnode, ipnnode, ipv4))
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{
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/* FIXME All this assumes that we have no sub TLVs. */
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te_ipreach = XCALLOC (MTYPE_ISIS_TLV,
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sizeof (struct te_ipv4_reachability) +
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((ipv4->prefixlen + 7)/8) - 1);
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te_ipreach->te_metric = htonl (*circuit->te_metric);
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te_ipreach->control = (ipv4->prefixlen & 0x3F);
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memcpy (&te_ipreach->prefix_start, &ipv4->prefix.s_addr,
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(ipv4->prefixlen + 7)/8);
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listnode_add (tlv_data.te_ipv4_reachs, te_ipreach);
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}
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}
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}
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#ifdef HAVE_IPV6
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/*
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@ -1206,6 +1240,8 @@ lsp_build_nonpseudo (struct isis_lsp *lsp, struct isis_area *area)
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{
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case CIRCUIT_T_BROADCAST:
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if (level & circuit->circuit_is_type)
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{
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if (area->oldmetric)
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{
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if (tlv_data.is_neighs == NULL)
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{
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@ -1221,11 +1257,36 @@ lsp_build_nonpseudo (struct isis_lsp *lsp, struct isis_area *area)
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circuit->u.bc.l2_desig_is, ISIS_SYS_ID_LEN + 1);
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is_neigh->metrics = circuit->metrics[level - 1];
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listnode_add (tlv_data.is_neighs, is_neigh);
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tlv_data.is_neighs->del = free_tlv;
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}
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if (area->newmetric)
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{
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uint32_t metric;
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if (tlv_data.te_is_neighs == NULL)
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{
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tlv_data.te_is_neighs = list_new ();
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tlv_data.te_is_neighs->del = free_tlv;
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}
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te_is_neigh = XCALLOC (MTYPE_ISIS_TLV,
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sizeof (struct te_is_neigh));
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if (level == 1)
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memcpy (te_is_neigh->neigh_id,
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circuit->u.bc.l1_desig_is, ISIS_SYS_ID_LEN + 1);
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else
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memcpy (te_is_neigh->neigh_id,
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circuit->u.bc.l2_desig_is, ISIS_SYS_ID_LEN + 1);
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metric = ((htonl(*circuit->te_metric) >> 8) & 0xffffff);
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memcpy (te_is_neigh->te_metric, &metric, 3);
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listnode_add (tlv_data.te_is_neighs, te_is_neigh);
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}
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}
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break;
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case CIRCUIT_T_P2P:
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nei = circuit->u.p2p.neighbor;
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if (nei && (level & nei->circuit_t))
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{
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if (area->oldmetric)
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{
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if (tlv_data.is_neighs == NULL)
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{
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@ -1237,6 +1298,23 @@ lsp_build_nonpseudo (struct isis_lsp *lsp, struct isis_area *area)
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is_neigh->metrics = circuit->metrics[level - 1];
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listnode_add (tlv_data.is_neighs, is_neigh);
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}
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if (area->newmetric)
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{
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uint32_t metric;
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if (tlv_data.te_is_neighs == NULL)
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{
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tlv_data.te_is_neighs = list_new ();
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tlv_data.te_is_neighs->del = free_tlv;
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}
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te_is_neigh = XCALLOC (MTYPE_ISIS_TLV,
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sizeof (struct te_is_neigh));
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memcpy (te_is_neigh->neigh_id, nei->sysid, ISIS_SYS_ID_LEN);
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metric = ((htonl(*circuit->te_metric) >> 8) & 0xffffff);
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memcpy (te_is_neigh->te_metric, &metric, 3);
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listnode_add (tlv_data.te_is_neighs, te_is_neigh);
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}
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}
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break;
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case CIRCUIT_T_STATIC_IN:
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zlog_warn ("lsp_area_create: unsupported circuit type");
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@ -1264,6 +1342,20 @@ lsp_build_nonpseudo (struct isis_lsp *lsp, struct isis_area *area)
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lsp = lsp_next_frag (LSP_FRAGMENT (lsp->lsp_header->lsp_id) + 1,
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lsp0, area, level);
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}
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/* FIXME: We pass maximum te_ipv4_reachability length to the lsp_tlv_fit()
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* for now. lsp_tlv_fit() needs to be fixed to deal with variable length
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* TLVs (sub TLVs!). */
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while (tlv_data.te_ipv4_reachs && listcount (tlv_data.te_ipv4_reachs))
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{
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if (lsp->tlv_data.te_ipv4_reachs == NULL)
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lsp->tlv_data.te_ipv4_reachs = list_new ();
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lsp_tlv_fit (lsp, &tlv_data.te_ipv4_reachs,
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&lsp->tlv_data.te_ipv4_reachs,
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9, area->lsp_frag_threshold, tlv_add_te_ipv4_reachs);
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if (tlv_data.te_ipv4_reachs && listcount (tlv_data.te_ipv4_reachs))
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lsp = lsp_next_frag (LSP_FRAGMENT (lsp->lsp_header->lsp_id) + 1,
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lsp0, area, level);
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}
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#ifdef HAVE_IPV6
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while (tlv_data.ipv6_reachs && listcount (tlv_data.ipv6_reachs))
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@ -1293,6 +1385,19 @@ lsp_build_nonpseudo (struct isis_lsp *lsp, struct isis_area *area)
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lsp0, area, level);
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}
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while (tlv_data.te_is_neighs && listcount (tlv_data.te_is_neighs))
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{
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if (lsp->tlv_data.te_is_neighs == NULL)
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lsp->tlv_data.te_is_neighs = list_new ();
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lsp_tlv_fit (lsp, &tlv_data.te_is_neighs, &lsp->tlv_data.te_is_neighs,
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IS_NEIGHBOURS_LEN, area->lsp_frag_threshold,
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tlv_add_te_is_neighs);
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if (tlv_data.te_is_neighs && listcount (tlv_data.te_is_neighs))
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lsp = lsp_next_frag (LSP_FRAGMENT (lsp->lsp_header->lsp_id) + 1,
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lsp0, area, level);
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}
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free_tlvs (&tlv_data);
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return;
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}
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@ -1572,6 +1677,7 @@ lsp_build_pseudo (struct isis_lsp *lsp, struct isis_circuit *circuit,
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{
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struct isis_adjacency *adj;
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struct is_neigh *is_neigh;
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struct te_is_neigh *te_is_neigh;
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struct es_neigh *es_neigh;
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struct list *adj_list;
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struct listnode *node, *nnode;
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@ -1592,6 +1698,8 @@ lsp_build_pseudo (struct isis_lsp *lsp, struct isis_circuit *circuit,
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/*
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* add self to IS neighbours
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*/
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if (circuit->area->oldmetric)
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{
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if (lsp->tlv_data.is_neighs == NULL)
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{
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lsp->tlv_data.is_neighs = list_new ();
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@ -1601,6 +1709,19 @@ lsp_build_pseudo (struct isis_lsp *lsp, struct isis_circuit *circuit,
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memcpy (&is_neigh->neigh_id, isis->sysid, ISIS_SYS_ID_LEN);
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listnode_add (lsp->tlv_data.is_neighs, is_neigh);
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}
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if (circuit->area->newmetric)
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{
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if (lsp->tlv_data.te_is_neighs == NULL)
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{
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lsp->tlv_data.te_is_neighs = list_new ();
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lsp->tlv_data.te_is_neighs->del = free_tlv;
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}
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te_is_neigh = XCALLOC (MTYPE_ISIS_TLV, sizeof (struct te_is_neigh));
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memcpy (&te_is_neigh->neigh_id, isis->sysid, ISIS_SYS_ID_LEN);
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listnode_add (lsp->tlv_data.te_is_neighs, te_is_neigh);
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}
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adj_list = list_new ();
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isis_adj_build_up_list (circuit->u.bc.adjdb[level - 1], adj_list);
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@ -1615,11 +1736,21 @@ lsp_build_pseudo (struct isis_lsp *lsp, struct isis_circuit *circuit,
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(level == 2 && adj->sys_type == ISIS_SYSTYPE_L2_IS))
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{
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/* an IS neighbour -> add it */
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if (circuit->area->oldmetric)
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{
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is_neigh = XCALLOC (MTYPE_ISIS_TLV, sizeof (struct is_neigh));
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memcpy (&is_neigh->neigh_id, adj->sysid, ISIS_SYS_ID_LEN);
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listnode_add (lsp->tlv_data.is_neighs, is_neigh);
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}
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if (circuit->area->newmetric)
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{
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te_is_neigh = XCALLOC (MTYPE_ISIS_TLV,
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sizeof (struct te_is_neigh));
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memcpy (&te_is_neigh->neigh_id, adj->sysid, ISIS_SYS_ID_LEN);
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listnode_add (lsp->tlv_data.te_is_neighs, te_is_neigh);
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}
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}
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else if (level == 1 && adj->sys_type == ISIS_SYSTYPE_ES)
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{
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/* an ES neigbour add it, if we are building level 1 LSP */
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@ -1655,6 +1786,9 @@ lsp_build_pseudo (struct isis_lsp *lsp, struct isis_circuit *circuit,
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if (lsp->tlv_data.is_neighs && listcount (lsp->tlv_data.is_neighs) > 0)
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tlv_add_is_neighs (lsp->tlv_data.is_neighs, lsp->pdu);
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if (lsp->tlv_data.te_is_neighs && listcount (lsp->tlv_data.te_is_neighs) > 0)
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tlv_add_te_is_neighs (lsp->tlv_data.te_is_neighs, lsp->pdu);
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if (lsp->tlv_data.es_neighs && listcount (lsp->tlv_data.es_neighs) > 0)
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tlv_add_is_neighs (lsp->tlv_data.es_neighs, lsp->pdu);
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