| File: | src/usr.sbin/ospf6d/rde_spf.c |
| Warning: | line 134, column 19 Access to field 'metric' results in a dereference of a null pointer (loaded from variable 'rtr_link') |
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| 1 | /* $OpenBSD: rde_spf.c,v 1.28 2020/04/05 18:19:04 denis Exp $ */ | |||
| 2 | ||||
| 3 | /* | |||
| 4 | * Copyright (c) 2005 Esben Norby <norby@openbsd.org> | |||
| 5 | * | |||
| 6 | * Permission to use, copy, modify, and distribute this software for any | |||
| 7 | * purpose with or without fee is hereby granted, provided that the above | |||
| 8 | * copyright notice and this permission notice appear in all copies. | |||
| 9 | * | |||
| 10 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES | |||
| 11 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF | |||
| 12 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR | |||
| 13 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES | |||
| 14 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | |||
| 15 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF | |||
| 16 | * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. | |||
| 17 | */ | |||
| 18 | ||||
| 19 | #include <sys/types.h> | |||
| 20 | #include <sys/socket.h> | |||
| 21 | #include <netinet/in.h> | |||
| 22 | #include <arpa/inet.h> | |||
| 23 | #include <err.h> | |||
| 24 | #include <stdlib.h> | |||
| 25 | #include <string.h> | |||
| 26 | ||||
| 27 | #include "ospf6d.h" | |||
| 28 | #include "ospf6.h" | |||
| 29 | #include "log.h" | |||
| 30 | #include "rde.h" | |||
| 31 | ||||
| 32 | extern struct ospfd_conf *rdeconf; | |||
| 33 | TAILQ_HEAD(, vertex)struct { struct vertex *tqh_first; struct vertex **tqh_last; } cand_list; | |||
| 34 | RB_HEAD(rt_tree, rt_node)struct rt_tree { struct rt_node *rbh_root; } rt; | |||
| 35 | RB_PROTOTYPE(rt_tree, rt_node, entry, rt_compare)void rt_tree_RB_INSERT_COLOR(struct rt_tree *, struct rt_node *); void rt_tree_RB_REMOVE_COLOR(struct rt_tree *, struct rt_node *, struct rt_node *); struct rt_node *rt_tree_RB_REMOVE(struct rt_tree *, struct rt_node *); struct rt_node *rt_tree_RB_INSERT (struct rt_tree *, struct rt_node *); struct rt_node *rt_tree_RB_FIND (struct rt_tree *, struct rt_node *); struct rt_node *rt_tree_RB_NFIND (struct rt_tree *, struct rt_node *); struct rt_node *rt_tree_RB_NEXT (struct rt_node *); struct rt_node *rt_tree_RB_PREV(struct rt_node *); struct rt_node *rt_tree_RB_MINMAX(struct rt_tree *, int) ; | |||
| 36 | RB_GENERATE(rt_tree, rt_node, entry, rt_compare)void rt_tree_RB_INSERT_COLOR(struct rt_tree *head, struct rt_node *elm) { struct rt_node *parent, *gparent, *tmp; while ((parent = (elm)->entry.rbe_parent) && (parent)->entry. rbe_color == 1) { gparent = (parent)->entry.rbe_parent; if (parent == (gparent)->entry.rbe_left) { tmp = (gparent)-> entry.rbe_right; if (tmp && (tmp)->entry.rbe_color == 1) { (tmp)->entry.rbe_color = 0; do { (parent)->entry .rbe_color = 0; (gparent)->entry.rbe_color = 1; } while (0 ); elm = gparent; continue; } if ((parent)->entry.rbe_right == elm) { do { (tmp) = (parent)->entry.rbe_right; if (((parent )->entry.rbe_right = (tmp)->entry.rbe_left)) { ((tmp)-> entry.rbe_left)->entry.rbe_parent = (parent); } do {} while (0); if (((tmp)->entry.rbe_parent = (parent)->entry.rbe_parent )) { if ((parent) == ((parent)->entry.rbe_parent)->entry .rbe_left) ((parent)->entry.rbe_parent)->entry.rbe_left = (tmp); else ((parent)->entry.rbe_parent)->entry.rbe_right = (tmp); } else (head)->rbh_root = (tmp); (tmp)->entry .rbe_left = (parent); (parent)->entry.rbe_parent = (tmp); do {} while (0); if (((tmp)->entry.rbe_parent)) do {} while ( 0); } while (0); tmp = parent; parent = elm; elm = tmp; } do { (parent)->entry.rbe_color = 0; (gparent)->entry.rbe_color = 1; } while (0); do { (tmp) = (gparent)->entry.rbe_left; if (((gparent)->entry.rbe_left = (tmp)->entry.rbe_right )) { ((tmp)->entry.rbe_right)->entry.rbe_parent = (gparent ); } do {} while (0); if (((tmp)->entry.rbe_parent = (gparent )->entry.rbe_parent)) { if ((gparent) == ((gparent)->entry .rbe_parent)->entry.rbe_left) ((gparent)->entry.rbe_parent )->entry.rbe_left = (tmp); else ((gparent)->entry.rbe_parent )->entry.rbe_right = (tmp); } else (head)->rbh_root = ( tmp); (tmp)->entry.rbe_right = (gparent); (gparent)->entry .rbe_parent = (tmp); do {} while (0); if (((tmp)->entry.rbe_parent )) do {} while (0); } while (0); } else { tmp = (gparent)-> entry.rbe_left; if (tmp && (tmp)->entry.rbe_color == 1) { (tmp)->entry.rbe_color = 0; do { (parent)->entry. rbe_color = 0; (gparent)->entry.rbe_color = 1; } while (0) ; elm = gparent; continue; } if ((parent)->entry.rbe_left == elm) { do { (tmp) = (parent)->entry.rbe_left; if (((parent )->entry.rbe_left = (tmp)->entry.rbe_right)) { ((tmp)-> entry.rbe_right)->entry.rbe_parent = (parent); } do {} while (0); if (((tmp)->entry.rbe_parent = (parent)->entry.rbe_parent )) { if ((parent) == ((parent)->entry.rbe_parent)->entry .rbe_left) ((parent)->entry.rbe_parent)->entry.rbe_left = (tmp); else ((parent)->entry.rbe_parent)->entry.rbe_right = (tmp); } else (head)->rbh_root = (tmp); (tmp)->entry .rbe_right = (parent); (parent)->entry.rbe_parent = (tmp); do {} while (0); if (((tmp)->entry.rbe_parent)) do {} while (0); } while (0); tmp = parent; parent = elm; elm = tmp; } do { (parent)->entry.rbe_color = 0; (gparent)->entry.rbe_color = 1; } while (0); do { (tmp) = (gparent)->entry.rbe_right ; if (((gparent)->entry.rbe_right = (tmp)->entry.rbe_left )) { ((tmp)->entry.rbe_left)->entry.rbe_parent = (gparent ); } do {} while (0); if (((tmp)->entry.rbe_parent = (gparent )->entry.rbe_parent)) { if ((gparent) == ((gparent)->entry .rbe_parent)->entry.rbe_left) ((gparent)->entry.rbe_parent )->entry.rbe_left = (tmp); else ((gparent)->entry.rbe_parent )->entry.rbe_right = (tmp); } else (head)->rbh_root = ( tmp); (tmp)->entry.rbe_left = (gparent); (gparent)->entry .rbe_parent = (tmp); do {} while (0); if (((tmp)->entry.rbe_parent )) do {} while (0); } while (0); } } (head->rbh_root)-> entry.rbe_color = 0; } void rt_tree_RB_REMOVE_COLOR(struct rt_tree *head, struct rt_node *parent, struct rt_node *elm) { struct rt_node *tmp; while ((elm == ((void*)0) || (elm)->entry.rbe_color == 0) && elm != (head)->rbh_root) { if ((parent)-> entry.rbe_left == elm) { tmp = (parent)->entry.rbe_right; if ((tmp)->entry.rbe_color == 1) { do { (tmp)->entry.rbe_color = 0; (parent)->entry.rbe_color = 1; } while (0); do { (tmp ) = (parent)->entry.rbe_right; if (((parent)->entry.rbe_right = (tmp)->entry.rbe_left)) { ((tmp)->entry.rbe_left)-> entry.rbe_parent = (parent); } do {} while (0); if (((tmp)-> entry.rbe_parent = (parent)->entry.rbe_parent)) { if ((parent ) == ((parent)->entry.rbe_parent)->entry.rbe_left) ((parent )->entry.rbe_parent)->entry.rbe_left = (tmp); else ((parent )->entry.rbe_parent)->entry.rbe_right = (tmp); } else ( head)->rbh_root = (tmp); (tmp)->entry.rbe_left = (parent ); (parent)->entry.rbe_parent = (tmp); do {} while (0); if (((tmp)->entry.rbe_parent)) do {} while (0); } while (0); tmp = (parent)->entry.rbe_right; } if (((tmp)->entry.rbe_left == ((void*)0) || ((tmp)->entry.rbe_left)->entry.rbe_color == 0) && ((tmp)->entry.rbe_right == ((void*)0) || ((tmp)->entry.rbe_right)->entry.rbe_color == 0)) { (tmp )->entry.rbe_color = 1; elm = parent; parent = (elm)->entry .rbe_parent; } else { if ((tmp)->entry.rbe_right == ((void *)0) || ((tmp)->entry.rbe_right)->entry.rbe_color == 0) { struct rt_node *oleft; if ((oleft = (tmp)->entry.rbe_left )) (oleft)->entry.rbe_color = 0; (tmp)->entry.rbe_color = 1; do { (oleft) = (tmp)->entry.rbe_left; if (((tmp)-> entry.rbe_left = (oleft)->entry.rbe_right)) { ((oleft)-> entry.rbe_right)->entry.rbe_parent = (tmp); } do {} while ( 0); if (((oleft)->entry.rbe_parent = (tmp)->entry.rbe_parent )) { if ((tmp) == ((tmp)->entry.rbe_parent)->entry.rbe_left ) ((tmp)->entry.rbe_parent)->entry.rbe_left = (oleft); else ((tmp)->entry.rbe_parent)->entry.rbe_right = (oleft); } else (head)->rbh_root = (oleft); (oleft)->entry.rbe_right = (tmp); (tmp)->entry.rbe_parent = (oleft); do {} while ( 0); if (((oleft)->entry.rbe_parent)) do {} while (0); } while (0); tmp = (parent)->entry.rbe_right; } (tmp)->entry.rbe_color = (parent)->entry.rbe_color; (parent)->entry.rbe_color = 0; if ((tmp)->entry.rbe_right) ((tmp)->entry.rbe_right )->entry.rbe_color = 0; do { (tmp) = (parent)->entry.rbe_right ; if (((parent)->entry.rbe_right = (tmp)->entry.rbe_left )) { ((tmp)->entry.rbe_left)->entry.rbe_parent = (parent ); } do {} while (0); if (((tmp)->entry.rbe_parent = (parent )->entry.rbe_parent)) { if ((parent) == ((parent)->entry .rbe_parent)->entry.rbe_left) ((parent)->entry.rbe_parent )->entry.rbe_left = (tmp); else ((parent)->entry.rbe_parent )->entry.rbe_right = (tmp); } else (head)->rbh_root = ( tmp); (tmp)->entry.rbe_left = (parent); (parent)->entry .rbe_parent = (tmp); do {} while (0); if (((tmp)->entry.rbe_parent )) do {} while (0); } while (0); elm = (head)->rbh_root; break ; } } else { tmp = (parent)->entry.rbe_left; if ((tmp)-> entry.rbe_color == 1) { do { (tmp)->entry.rbe_color = 0; ( parent)->entry.rbe_color = 1; } while (0); do { (tmp) = (parent )->entry.rbe_left; if (((parent)->entry.rbe_left = (tmp )->entry.rbe_right)) { ((tmp)->entry.rbe_right)->entry .rbe_parent = (parent); } do {} while (0); if (((tmp)->entry .rbe_parent = (parent)->entry.rbe_parent)) { if ((parent) == ((parent)->entry.rbe_parent)->entry.rbe_left) ((parent )->entry.rbe_parent)->entry.rbe_left = (tmp); else ((parent )->entry.rbe_parent)->entry.rbe_right = (tmp); } else ( head)->rbh_root = (tmp); (tmp)->entry.rbe_right = (parent ); (parent)->entry.rbe_parent = (tmp); do {} while (0); if (((tmp)->entry.rbe_parent)) do {} while (0); } while (0); tmp = (parent)->entry.rbe_left; } if (((tmp)->entry.rbe_left == ((void*)0) || ((tmp)->entry.rbe_left)->entry.rbe_color == 0) && ((tmp)->entry.rbe_right == ((void*)0) || ((tmp)->entry.rbe_right)->entry.rbe_color == 0)) { (tmp )->entry.rbe_color = 1; elm = parent; parent = (elm)->entry .rbe_parent; } else { if ((tmp)->entry.rbe_left == ((void* )0) || ((tmp)->entry.rbe_left)->entry.rbe_color == 0) { struct rt_node *oright; if ((oright = (tmp)->entry.rbe_right )) (oright)->entry.rbe_color = 0; (tmp)->entry.rbe_color = 1; do { (oright) = (tmp)->entry.rbe_right; if (((tmp)-> entry.rbe_right = (oright)->entry.rbe_left)) { ((oright)-> entry.rbe_left)->entry.rbe_parent = (tmp); } do {} while ( 0); if (((oright)->entry.rbe_parent = (tmp)->entry.rbe_parent )) { if ((tmp) == ((tmp)->entry.rbe_parent)->entry.rbe_left ) ((tmp)->entry.rbe_parent)->entry.rbe_left = (oright); else ((tmp)->entry.rbe_parent)->entry.rbe_right = (oright ); } else (head)->rbh_root = (oright); (oright)->entry. rbe_left = (tmp); (tmp)->entry.rbe_parent = (oright); do { } while (0); if (((oright)->entry.rbe_parent)) do {} while (0); } while (0); tmp = (parent)->entry.rbe_left; } (tmp) ->entry.rbe_color = (parent)->entry.rbe_color; (parent) ->entry.rbe_color = 0; if ((tmp)->entry.rbe_left) ((tmp )->entry.rbe_left)->entry.rbe_color = 0; do { (tmp) = ( parent)->entry.rbe_left; if (((parent)->entry.rbe_left = (tmp)->entry.rbe_right)) { ((tmp)->entry.rbe_right)-> entry.rbe_parent = (parent); } do {} while (0); if (((tmp)-> entry.rbe_parent = (parent)->entry.rbe_parent)) { if ((parent ) == ((parent)->entry.rbe_parent)->entry.rbe_left) ((parent )->entry.rbe_parent)->entry.rbe_left = (tmp); else ((parent )->entry.rbe_parent)->entry.rbe_right = (tmp); } else ( head)->rbh_root = (tmp); (tmp)->entry.rbe_right = (parent ); (parent)->entry.rbe_parent = (tmp); do {} while (0); if (((tmp)->entry.rbe_parent)) do {} while (0); } while (0); elm = (head)->rbh_root; break; } } } if (elm) (elm)->entry .rbe_color = 0; } struct rt_node * rt_tree_RB_REMOVE(struct rt_tree *head, struct rt_node *elm) { struct rt_node *child, *parent , *old = elm; int color; if ((elm)->entry.rbe_left == ((void *)0)) child = (elm)->entry.rbe_right; else if ((elm)->entry .rbe_right == ((void*)0)) child = (elm)->entry.rbe_left; else { struct rt_node *left; elm = (elm)->entry.rbe_right; while ((left = (elm)->entry.rbe_left)) elm = left; child = (elm )->entry.rbe_right; parent = (elm)->entry.rbe_parent; color = (elm)->entry.rbe_color; if (child) (child)->entry.rbe_parent = parent; if (parent) { if ((parent)->entry.rbe_left == elm ) (parent)->entry.rbe_left = child; else (parent)->entry .rbe_right = child; do {} while (0); } else (head)->rbh_root = child; if ((elm)->entry.rbe_parent == old) parent = elm ; (elm)->entry = (old)->entry; if ((old)->entry.rbe_parent ) { if (((old)->entry.rbe_parent)->entry.rbe_left == old ) ((old)->entry.rbe_parent)->entry.rbe_left = elm; else ((old)->entry.rbe_parent)->entry.rbe_right = elm; do { } while (0); } else (head)->rbh_root = elm; ((old)->entry .rbe_left)->entry.rbe_parent = elm; if ((old)->entry.rbe_right ) ((old)->entry.rbe_right)->entry.rbe_parent = elm; if ( parent) { left = parent; do { do {} while (0); } while ((left = (left)->entry.rbe_parent)); } goto color; } parent = (elm )->entry.rbe_parent; color = (elm)->entry.rbe_color; if (child) (child)->entry.rbe_parent = parent; if (parent) { if ((parent)->entry.rbe_left == elm) (parent)->entry.rbe_left = child; else (parent)->entry.rbe_right = child; do {} while (0); } else (head)->rbh_root = child; color: if (color == 0) rt_tree_RB_REMOVE_COLOR(head, parent, child); return (old ); } struct rt_node * rt_tree_RB_INSERT(struct rt_tree *head, struct rt_node *elm) { struct rt_node *tmp; struct rt_node * parent = ((void*)0); int comp = 0; tmp = (head)->rbh_root; while (tmp) { parent = tmp; comp = (rt_compare)(elm, parent) ; if (comp < 0) tmp = (tmp)->entry.rbe_left; else if (comp > 0) tmp = (tmp)->entry.rbe_right; else return (tmp); } do { (elm)->entry.rbe_parent = parent; (elm)->entry.rbe_left = (elm)->entry.rbe_right = ((void*)0); (elm)->entry.rbe_color = 1; } while (0); if (parent != ((void*)0)) { if (comp < 0 ) (parent)->entry.rbe_left = elm; else (parent)->entry. rbe_right = elm; do {} while (0); } else (head)->rbh_root = elm; rt_tree_RB_INSERT_COLOR(head, elm); return (((void*)0)) ; } struct rt_node * rt_tree_RB_FIND(struct rt_tree *head, struct rt_node *elm) { struct rt_node *tmp = (head)->rbh_root; int comp; while (tmp) { comp = rt_compare(elm, tmp); if (comp < 0) tmp = (tmp)->entry.rbe_left; else if (comp > 0) tmp = (tmp)->entry.rbe_right; else return (tmp); } return ((( void*)0)); } struct rt_node * rt_tree_RB_NFIND(struct rt_tree *head, struct rt_node *elm) { struct rt_node *tmp = (head)-> rbh_root; struct rt_node *res = ((void*)0); int comp; while ( tmp) { comp = rt_compare(elm, tmp); if (comp < 0) { res = tmp ; tmp = (tmp)->entry.rbe_left; } else if (comp > 0) tmp = (tmp)->entry.rbe_right; else return (tmp); } return (res ); } struct rt_node * rt_tree_RB_NEXT(struct rt_node *elm) { if ((elm)->entry.rbe_right) { elm = (elm)->entry.rbe_right ; while ((elm)->entry.rbe_left) elm = (elm)->entry.rbe_left ; } else { if ((elm)->entry.rbe_parent && (elm == ( (elm)->entry.rbe_parent)->entry.rbe_left)) elm = (elm)-> entry.rbe_parent; else { while ((elm)->entry.rbe_parent && (elm == ((elm)->entry.rbe_parent)->entry.rbe_right)) elm = (elm)->entry.rbe_parent; elm = (elm)->entry.rbe_parent ; } } return (elm); } struct rt_node * rt_tree_RB_PREV(struct rt_node *elm) { if ((elm)->entry.rbe_left) { elm = (elm)-> entry.rbe_left; while ((elm)->entry.rbe_right) elm = (elm) ->entry.rbe_right; } else { if ((elm)->entry.rbe_parent && (elm == ((elm)->entry.rbe_parent)->entry.rbe_right )) elm = (elm)->entry.rbe_parent; else { while ((elm)-> entry.rbe_parent && (elm == ((elm)->entry.rbe_parent )->entry.rbe_left)) elm = (elm)->entry.rbe_parent; elm = (elm)->entry.rbe_parent; } } return (elm); } struct rt_node * rt_tree_RB_MINMAX(struct rt_tree *head, int val) { struct rt_node *tmp = (head)->rbh_root; struct rt_node *parent = ((void* )0); while (tmp) { parent = tmp; if (val < 0) tmp = (tmp)-> entry.rbe_left; else tmp = (tmp)->entry.rbe_right; } return (parent); } | |||
| 37 | struct vertex *spf_root = NULL((void*)0); | |||
| 38 | ||||
| 39 | struct in6_addr *calc_nexthop_lladdr(struct vertex *, struct lsa_rtr_link *, | |||
| 40 | unsigned int); | |||
| 41 | void calc_nexthop_transit_nbr(struct vertex *, struct vertex *, | |||
| 42 | unsigned int); | |||
| 43 | void calc_nexthop(struct vertex *, struct vertex *, | |||
| 44 | struct area *, struct lsa_rtr_link *); | |||
| 45 | void rt_nexthop_clear(struct rt_node *); | |||
| 46 | void rt_nexthop_add(struct rt_node *, struct v_nexthead *, | |||
| 47 | u_int16_t, struct in_addr); | |||
| 48 | void rt_update(struct in6_addr *, u_int8_t, struct v_nexthead *, | |||
| 49 | u_int16_t, u_int32_t, u_int32_t, struct in_addr, | |||
| 50 | struct in_addr, enum path_type, enum dst_type, u_int8_t, | |||
| 51 | u_int32_t); | |||
| 52 | struct rt_node *rt_lookup(enum dst_type, struct in6_addr *); | |||
| 53 | void rt_invalidate(struct area *); | |||
| 54 | int linked(struct vertex *, struct vertex *); | |||
| 55 | ||||
| 56 | void | |||
| 57 | spf_calc(struct area *area) | |||
| 58 | { | |||
| 59 | struct vertex *v, *w; | |||
| 60 | struct lsa_rtr_link *rtr_link = NULL((void*)0); | |||
| 61 | struct lsa_net_link *net_link; | |||
| 62 | u_int32_t d; | |||
| 63 | unsigned int i; | |||
| 64 | ||||
| 65 | /* clear SPF tree */ | |||
| 66 | spf_tree_clr(area); | |||
| 67 | cand_list_clr(); | |||
| 68 | ||||
| 69 | /* initialize SPF tree */ | |||
| 70 | if ((v = spf_root = lsa_find_rtr(area, rde_router_id())) == NULL((void*)0)) | |||
| 71 | /* empty area because no interface is active */ | |||
| 72 | return; | |||
| 73 | ||||
| 74 | area->transit = 0; | |||
| 75 | spf_root->cost = 0; | |||
| 76 | w = NULL((void*)0); | |||
| 77 | ||||
| 78 | /* calculate SPF tree */ | |||
| 79 | do { | |||
| 80 | /* loop links */ | |||
| 81 | for (i = 0; i < lsa_num_links(v); i++) { | |||
| 82 | switch (v->type) { | |||
| 83 | case LSA_TYPE_ROUTER0x2001: | |||
| 84 | rtr_link = get_rtr_link(v, i); | |||
| 85 | switch (rtr_link->type) { | |||
| 86 | case LINK_TYPE_POINTTOPOINT1: | |||
| 87 | case LINK_TYPE_VIRTUAL4: | |||
| 88 | /* find router LSA */ | |||
| 89 | w = lsa_find_rtr(area, | |||
| 90 | rtr_link->nbr_rtr_id); | |||
| 91 | break; | |||
| 92 | case LINK_TYPE_TRANSIT_NET2: | |||
| 93 | /* find network LSA */ | |||
| 94 | w = lsa_find_tree(&area->lsa_tree, | |||
| 95 | htons(LSA_TYPE_NETWORK)(__uint16_t)(__builtin_constant_p(0x2002) ? (__uint16_t)(((__uint16_t )(0x2002) & 0xffU) << 8 | ((__uint16_t)(0x2002) & 0xff00U) >> 8) : __swap16md(0x2002)), | |||
| 96 | rtr_link->nbr_iface_id, | |||
| 97 | rtr_link->nbr_rtr_id); | |||
| 98 | break; | |||
| 99 | default: | |||
| 100 | fatalx("spf_calc: invalid link type"); | |||
| 101 | } | |||
| 102 | break; | |||
| 103 | case LSA_TYPE_NETWORK0x2002: | |||
| 104 | net_link = get_net_link(v, i); | |||
| 105 | /* find router LSA */ | |||
| 106 | w = lsa_find_rtr(area, net_link->att_rtr); | |||
| 107 | break; | |||
| 108 | default: | |||
| 109 | fatalx("spf_calc: invalid LSA type"); | |||
| 110 | } | |||
| 111 | ||||
| 112 | if (w == NULL((void*)0)) | |||
| 113 | continue; | |||
| 114 | ||||
| 115 | if (ntohs(w->lsa->hdr.age)(__uint16_t)(__builtin_constant_p(w->lsa->hdr.age) ? (__uint16_t )(((__uint16_t)(w->lsa->hdr.age) & 0xffU) << 8 | ((__uint16_t)(w->lsa->hdr.age) & 0xff00U) >> 8) : __swap16md(w->lsa->hdr.age)) == MAX_AGE3600) | |||
| 116 | continue; | |||
| 117 | ||||
| 118 | if (lsa_num_links(w) == 0) | |||
| 119 | continue; | |||
| 120 | ||||
| 121 | if (!linked(w, v)) { | |||
| 122 | log_debug("spf_calc: w adv_rtr %s ls_id %s " | |||
| 123 | "type 0x%x numlinks %hu has no link to " | |||
| 124 | "v adv_rtr %s ls_id %s type 0x%x", | |||
| 125 | log_rtr_id(htonl(w->adv_rtr)(__uint32_t)(__builtin_constant_p(w->adv_rtr) ? (__uint32_t )(((__uint32_t)(w->adv_rtr) & 0xff) << 24 | ((__uint32_t )(w->adv_rtr) & 0xff00) << 8 | ((__uint32_t)(w-> adv_rtr) & 0xff0000) >> 8 | ((__uint32_t)(w->adv_rtr ) & 0xff000000) >> 24) : __swap32md(w->adv_rtr))), | |||
| 126 | log_rtr_id(htonl(w->ls_id)(__uint32_t)(__builtin_constant_p(w->ls_id) ? (__uint32_t) (((__uint32_t)(w->ls_id) & 0xff) << 24 | ((__uint32_t )(w->ls_id) & 0xff00) << 8 | ((__uint32_t)(w-> ls_id) & 0xff0000) >> 8 | ((__uint32_t)(w->ls_id ) & 0xff000000) >> 24) : __swap32md(w->ls_id))), w->type, | |||
| 127 | lsa_num_links(w), | |||
| 128 | log_rtr_id(htonl(v->adv_rtr)(__uint32_t)(__builtin_constant_p(v->adv_rtr) ? (__uint32_t )(((__uint32_t)(v->adv_rtr) & 0xff) << 24 | ((__uint32_t )(v->adv_rtr) & 0xff00) << 8 | ((__uint32_t)(v-> adv_rtr) & 0xff0000) >> 8 | ((__uint32_t)(v->adv_rtr ) & 0xff000000) >> 24) : __swap32md(v->adv_rtr))), | |||
| 129 | log_rtr_id(htonl(v->ls_id)(__uint32_t)(__builtin_constant_p(v->ls_id) ? (__uint32_t) (((__uint32_t)(v->ls_id) & 0xff) << 24 | ((__uint32_t )(v->ls_id) & 0xff00) << 8 | ((__uint32_t)(v-> ls_id) & 0xff0000) >> 8 | ((__uint32_t)(v->ls_id ) & 0xff000000) >> 24) : __swap32md(v->ls_id))), v->type); | |||
| 130 | continue; | |||
| 131 | } | |||
| 132 | ||||
| 133 | if (v->type
| |||
| 134 | d = v->cost + ntohs(rtr_link->metric)(__uint16_t)(__builtin_constant_p(rtr_link->metric) ? (__uint16_t )(((__uint16_t)(rtr_link->metric) & 0xffU) << 8 | ((__uint16_t)(rtr_link->metric) & 0xff00U) >> 8 ) : __swap16md(rtr_link->metric)); | |||
| ||||
| 135 | else | |||
| 136 | d = v->cost; | |||
| 137 | ||||
| 138 | if (cand_list_present(w)) { | |||
| 139 | if (d > w->cost) | |||
| 140 | continue; | |||
| 141 | if (d < w->cost) { | |||
| 142 | w->cost = d; | |||
| 143 | vertex_nexthop_clear(w); | |||
| 144 | calc_nexthop(w, v, area, rtr_link); | |||
| 145 | /* | |||
| 146 | * need to readd to candidate list | |||
| 147 | * because the list is sorted | |||
| 148 | */ | |||
| 149 | TAILQ_REMOVE(&cand_list, w, cand)do { if (((w)->cand.tqe_next) != ((void*)0)) (w)->cand. tqe_next->cand.tqe_prev = (w)->cand.tqe_prev; else (& cand_list)->tqh_last = (w)->cand.tqe_prev; *(w)->cand .tqe_prev = (w)->cand.tqe_next; ; ; } while (0); | |||
| 150 | cand_list_add(w); | |||
| 151 | } else | |||
| 152 | /* equal cost path */ | |||
| 153 | calc_nexthop(w, v, area, rtr_link); | |||
| 154 | } else if (w->cost == LS_INFINITY0xffffff && d < LS_INFINITY0xffffff) { | |||
| 155 | w->cost = d; | |||
| 156 | ||||
| 157 | vertex_nexthop_clear(w); | |||
| 158 | calc_nexthop(w, v, area, rtr_link); | |||
| 159 | cand_list_add(w); | |||
| 160 | } | |||
| 161 | } | |||
| 162 | ||||
| 163 | /* get next vertex */ | |||
| 164 | v = cand_list_pop(); | |||
| 165 | w = NULL((void*)0); | |||
| 166 | } while (v != NULL((void*)0)); | |||
| 167 | ||||
| 168 | /* spf_dump(area); */ | |||
| 169 | log_debug("spf_calc: area %s calculated", inet_ntoa(area->id)); | |||
| 170 | ||||
| 171 | /* Dump SPF tree to log */ | |||
| 172 | RB_FOREACH(v, lsa_tree, &area->lsa_tree)for ((v) = lsa_tree_RB_MINMAX(&area->lsa_tree, -1); (v ) != ((void*)0); (v) = lsa_tree_RB_NEXT(v)) { | |||
| 173 | struct v_nexthop *vn; | |||
| 174 | char hops[4096]; | |||
| 175 | struct iface *iface; | |||
| 176 | ||||
| 177 | bzero(hops, sizeof(hops)); | |||
| 178 | ||||
| 179 | if (v->type != LSA_TYPE_ROUTER0x2001 && v->type != LSA_TYPE_NETWORK0x2002) | |||
| 180 | continue; | |||
| 181 | ||||
| 182 | TAILQ_FOREACH(vn, &v->nexthop, entry)for((vn) = ((&v->nexthop)->tqh_first); (vn) != ((void *)0); (vn) = ((vn)->entry.tqe_next)) { | |||
| 183 | strlcat(hops, log_in6addr(&vn->nexthop), sizeof(hops)); | |||
| 184 | strlcat(hops, "%", sizeof(hops)); | |||
| 185 | if ((iface = if_find(vn->ifindex)) == NULL((void*)0)) | |||
| 186 | fatalx("spf_calc: lost iface"); | |||
| 187 | strlcat(hops, iface->name, sizeof(hops)); | |||
| 188 | if (vn != TAILQ_LAST(&v->nexthop, v_nexthead)(*(((struct v_nexthead *)((&v->nexthop)->tqh_last)) ->tqh_last))) | |||
| 189 | strlcat(hops, ", ", sizeof(hops)); | |||
| 190 | } | |||
| 191 | log_debug("%s(%s, 0x%x, %s) cost %u has nexthops [%s]", | |||
| 192 | v == spf_root ? "*" : " ", log_rtr_id(htonl(v->adv_rtr)(__uint32_t)(__builtin_constant_p(v->adv_rtr) ? (__uint32_t )(((__uint32_t)(v->adv_rtr) & 0xff) << 24 | ((__uint32_t )(v->adv_rtr) & 0xff00) << 8 | ((__uint32_t)(v-> adv_rtr) & 0xff0000) >> 8 | ((__uint32_t)(v->adv_rtr ) & 0xff000000) >> 24) : __swap32md(v->adv_rtr))), | |||
| 193 | v->type, log_rtr_id(htonl(v->ls_id)(__uint32_t)(__builtin_constant_p(v->ls_id) ? (__uint32_t) (((__uint32_t)(v->ls_id) & 0xff) << 24 | ((__uint32_t )(v->ls_id) & 0xff00) << 8 | ((__uint32_t)(v-> ls_id) & 0xff0000) >> 8 | ((__uint32_t)(v->ls_id ) & 0xff000000) >> 24) : __swap32md(v->ls_id))), v->cost, hops); | |||
| 194 | } | |||
| 195 | ||||
| 196 | area->num_spf_calc++; | |||
| 197 | start_spf_timer(); | |||
| 198 | } | |||
| 199 | ||||
| 200 | void | |||
| 201 | rt_calc(struct vertex *v, struct area *area, struct ospfd_conf *conf) | |||
| 202 | { | |||
| 203 | struct vertex *w; | |||
| 204 | struct lsa_intra_prefix *iap; | |||
| 205 | struct lsa_prefix *prefix; | |||
| 206 | struct in_addr adv_rtr; | |||
| 207 | struct in6_addr ia6; | |||
| 208 | u_int16_t i, off; | |||
| 209 | u_int8_t flags; | |||
| 210 | ||||
| 211 | lsa_age(v); | |||
| 212 | if (ntohs(v->lsa->hdr.age)(__uint16_t)(__builtin_constant_p(v->lsa->hdr.age) ? (__uint16_t )(((__uint16_t)(v->lsa->hdr.age) & 0xffU) << 8 | ((__uint16_t)(v->lsa->hdr.age) & 0xff00U) >> 8) : __swap16md(v->lsa->hdr.age)) == MAX_AGE3600) | |||
| 213 | return; | |||
| 214 | ||||
| 215 | switch (v->type) { | |||
| 216 | case LSA_TYPE_ROUTER0x2001: | |||
| 217 | if (v->cost >= LS_INFINITY0xffffff || TAILQ_EMPTY(&v->nexthop)(((&v->nexthop)->tqh_first) == ((void*)0))) | |||
| 218 | return; | |||
| 219 | ||||
| 220 | /* router, only add border and as-external routers */ | |||
| 221 | flags = LSA_24_GETHI(ntohl(v->lsa->data.rtr.opts))(((__uint32_t)(__builtin_constant_p(v->lsa->data.rtr.opts ) ? (__uint32_t)(((__uint32_t)(v->lsa->data.rtr.opts) & 0xff) << 24 | ((__uint32_t)(v->lsa->data.rtr.opts ) & 0xff00) << 8 | ((__uint32_t)(v->lsa->data .rtr.opts) & 0xff0000) >> 8 | ((__uint32_t)(v->lsa ->data.rtr.opts) & 0xff000000) >> 24) : __swap32md (v->lsa->data.rtr.opts))) >> 24); | |||
| 222 | if ((flags & (OSPF_RTR_B0x01 | OSPF_RTR_E0x02)) == 0) | |||
| 223 | return; | |||
| 224 | ||||
| 225 | bzero(&ia6, sizeof(ia6)); | |||
| 226 | adv_rtr.s_addr = htonl(v->adv_rtr)(__uint32_t)(__builtin_constant_p(v->adv_rtr) ? (__uint32_t )(((__uint32_t)(v->adv_rtr) & 0xff) << 24 | ((__uint32_t )(v->adv_rtr) & 0xff00) << 8 | ((__uint32_t)(v-> adv_rtr) & 0xff0000) >> 8 | ((__uint32_t)(v->adv_rtr ) & 0xff000000) >> 24) : __swap32md(v->adv_rtr)); | |||
| 227 | bcopy(&adv_rtr, &ia6.s6_addr__u6_addr.__u6_addr8[12], sizeof(adv_rtr)); | |||
| 228 | ||||
| 229 | rt_update(&ia6, 128, &v->nexthop, v->type, v->cost, 0, area->id, | |||
| 230 | adv_rtr, PT_INTER_AREA, DT_RTR, flags, 0); | |||
| 231 | break; | |||
| 232 | case LSA_TYPE_INTRA_A_PREFIX0x2009: | |||
| 233 | /* Find referenced LSA */ | |||
| 234 | iap = &v->lsa->data.pref_intra; | |||
| 235 | switch (ntohs(iap->ref_type)(__uint16_t)(__builtin_constant_p(iap->ref_type) ? (__uint16_t )(((__uint16_t)(iap->ref_type) & 0xffU) << 8 | ( (__uint16_t)(iap->ref_type) & 0xff00U) >> 8) : __swap16md (iap->ref_type))) { | |||
| 236 | case LSA_TYPE_ROUTER0x2001: | |||
| 237 | w = lsa_find_rtr(area, iap->ref_adv_rtr); | |||
| 238 | if (w == NULL((void*)0)) { | |||
| 239 | warnx("rt_calc: Intra-Area-Prefix LSA (%s, %u) " | |||
| 240 | "references non-existent router %s", | |||
| 241 | log_rtr_id(htonl(v->adv_rtr)(__uint32_t)(__builtin_constant_p(v->adv_rtr) ? (__uint32_t )(((__uint32_t)(v->adv_rtr) & 0xff) << 24 | ((__uint32_t )(v->adv_rtr) & 0xff00) << 8 | ((__uint32_t)(v-> adv_rtr) & 0xff0000) >> 8 | ((__uint32_t)(v->adv_rtr ) & 0xff000000) >> 24) : __swap32md(v->adv_rtr))), | |||
| 242 | v->ls_id, log_rtr_id(iap->ref_adv_rtr)); | |||
| 243 | return; | |||
| 244 | } | |||
| 245 | flags = LSA_24_GETHI(ntohl(w->lsa->data.rtr.opts))(((__uint32_t)(__builtin_constant_p(w->lsa->data.rtr.opts ) ? (__uint32_t)(((__uint32_t)(w->lsa->data.rtr.opts) & 0xff) << 24 | ((__uint32_t)(w->lsa->data.rtr.opts ) & 0xff00) << 8 | ((__uint32_t)(w->lsa->data .rtr.opts) & 0xff0000) >> 8 | ((__uint32_t)(w->lsa ->data.rtr.opts) & 0xff000000) >> 24) : __swap32md (w->lsa->data.rtr.opts))) >> 24); | |||
| 246 | break; | |||
| 247 | case LSA_TYPE_NETWORK0x2002: | |||
| 248 | w = lsa_find_tree(&area->lsa_tree, iap->ref_type, | |||
| 249 | iap->ref_ls_id, iap->ref_adv_rtr); | |||
| 250 | if (w == NULL((void*)0)) { | |||
| 251 | warnx("rt_calc: Intra-Area-Prefix LSA (%s, %u) " | |||
| 252 | "references non-existent Network LSA (%s, " | |||
| 253 | "%u)", log_rtr_id(htonl(v->adv_rtr)(__uint32_t)(__builtin_constant_p(v->adv_rtr) ? (__uint32_t )(((__uint32_t)(v->adv_rtr) & 0xff) << 24 | ((__uint32_t )(v->adv_rtr) & 0xff00) << 8 | ((__uint32_t)(v-> adv_rtr) & 0xff0000) >> 8 | ((__uint32_t)(v->adv_rtr ) & 0xff000000) >> 24) : __swap32md(v->adv_rtr))), | |||
| 254 | v->ls_id, log_rtr_id(iap->ref_adv_rtr), | |||
| 255 | ntohl(iap->ref_ls_id)(__uint32_t)(__builtin_constant_p(iap->ref_ls_id) ? (__uint32_t )(((__uint32_t)(iap->ref_ls_id) & 0xff) << 24 | ( (__uint32_t)(iap->ref_ls_id) & 0xff00) << 8 | (( __uint32_t)(iap->ref_ls_id) & 0xff0000) >> 8 | ( (__uint32_t)(iap->ref_ls_id) & 0xff000000) >> 24 ) : __swap32md(iap->ref_ls_id))); | |||
| 256 | return; | |||
| 257 | } | |||
| 258 | flags = 0; | |||
| 259 | break; | |||
| 260 | default: | |||
| 261 | warnx("rt_calc: Intra-Area-Prefix LSA (%s, %u) has " | |||
| 262 | "invalid ref_type 0x%hx", log_rtr_id(v->adv_rtr), | |||
| 263 | v->ls_id, ntohs(iap->ref_type)(__uint16_t)(__builtin_constant_p(iap->ref_type) ? (__uint16_t )(((__uint16_t)(iap->ref_type) & 0xffU) << 8 | ( (__uint16_t)(iap->ref_type) & 0xff00U) >> 8) : __swap16md (iap->ref_type))); | |||
| 264 | return; | |||
| 265 | } | |||
| 266 | ||||
| 267 | if (w->cost >= LS_INFINITY0xffffff || TAILQ_EMPTY(&w->nexthop)(((&w->nexthop)->tqh_first) == ((void*)0))) | |||
| 268 | return; | |||
| 269 | ||||
| 270 | /* Add prefixes listed in Intra-Area-Prefix LSA to routing | |||
| 271 | * table, using w as destination. */ | |||
| 272 | off = sizeof(v->lsa->hdr) + sizeof(struct lsa_intra_prefix); | |||
| 273 | for (i = 0; i < ntohs(v->lsa->data.pref_intra.numprefix)(__uint16_t)(__builtin_constant_p(v->lsa->data.pref_intra .numprefix) ? (__uint16_t)(((__uint16_t)(v->lsa->data.pref_intra .numprefix) & 0xffU) << 8 | ((__uint16_t)(v->lsa ->data.pref_intra.numprefix) & 0xff00U) >> 8) : __swap16md (v->lsa->data.pref_intra.numprefix)); i++) { | |||
| 274 | prefix = (struct lsa_prefix *)((char *)(v->lsa) + off); | |||
| 275 | if (!(prefix->options & OSPF_PREFIX_NU0x01)) { | |||
| 276 | bzero(&ia6, sizeof(ia6)); | |||
| 277 | bcopy(prefix + 1, &ia6, | |||
| 278 | LSA_PREFIXSIZE(prefix->prefixlen)(((prefix->prefixlen) + 31)/32 * 4)); | |||
| 279 | ||||
| 280 | adv_rtr.s_addr = htonl(w->adv_rtr)(__uint32_t)(__builtin_constant_p(w->adv_rtr) ? (__uint32_t )(((__uint32_t)(w->adv_rtr) & 0xff) << 24 | ((__uint32_t )(w->adv_rtr) & 0xff00) << 8 | ((__uint32_t)(w-> adv_rtr) & 0xff0000) >> 8 | ((__uint32_t)(w->adv_rtr ) & 0xff000000) >> 24) : __swap32md(w->adv_rtr)); | |||
| 281 | ||||
| 282 | rt_update(&ia6, prefix->prefixlen, &w->nexthop, | |||
| 283 | v->type, w->cost + ntohs(prefix->metric)(__uint16_t)(__builtin_constant_p(prefix->metric) ? (__uint16_t )(((__uint16_t)(prefix->metric) & 0xffU) << 8 | ( (__uint16_t)(prefix->metric) & 0xff00U) >> 8) : __swap16md (prefix->metric)), 0, | |||
| 284 | area->id, adv_rtr, PT_INTRA_AREA, DT_NET, | |||
| 285 | flags, 0); | |||
| 286 | } | |||
| 287 | off += sizeof(struct lsa_prefix) | |||
| 288 | + LSA_PREFIXSIZE(prefix->prefixlen)(((prefix->prefixlen) + 31)/32 * 4); | |||
| 289 | } | |||
| 290 | break; | |||
| 291 | case LSA_TYPE_INTER_A_PREFIX0x2003: | |||
| 292 | /* XXX if ABR only look at area 0.0.0.0 LSA */ | |||
| 293 | /* ignore self-originated stuff */ | |||
| 294 | if (v->self) | |||
| 295 | return; | |||
| 296 | ||||
| 297 | adv_rtr.s_addr = htonl(v->adv_rtr)(__uint32_t)(__builtin_constant_p(v->adv_rtr) ? (__uint32_t )(((__uint32_t)(v->adv_rtr) & 0xff) << 24 | ((__uint32_t )(v->adv_rtr) & 0xff00) << 8 | ((__uint32_t)(v-> adv_rtr) & 0xff0000) >> 8 | ((__uint32_t)(v->adv_rtr ) & 0xff000000) >> 24) : __swap32md(v->adv_rtr)); | |||
| 298 | w = lsa_find_rtr(area, adv_rtr.s_addr); | |||
| 299 | if (w == NULL((void*)0)) { | |||
| 300 | warnx("rt_calc: Inter-Area-Router LSA (%s, %u) " | |||
| 301 | "originated from non-existent router", | |||
| 302 | log_rtr_id(htonl(v->adv_rtr)(__uint32_t)(__builtin_constant_p(v->adv_rtr) ? (__uint32_t )(((__uint32_t)(v->adv_rtr) & 0xff) << 24 | ((__uint32_t )(v->adv_rtr) & 0xff00) << 8 | ((__uint32_t)(v-> adv_rtr) & 0xff0000) >> 8 | ((__uint32_t)(v->adv_rtr ) & 0xff000000) >> 24) : __swap32md(v->adv_rtr))), | |||
| 303 | v->ls_id); | |||
| 304 | return; | |||
| 305 | } | |||
| 306 | if (w->cost >= LS_INFINITY0xffffff || TAILQ_EMPTY(&w->nexthop)(((&w->nexthop)->tqh_first) == ((void*)0))) | |||
| 307 | return; | |||
| 308 | ||||
| 309 | /* Add prefix listed in Inter-Area-Prefix LSA to routing | |||
| 310 | * table, using w as destination. */ | |||
| 311 | off = sizeof(v->lsa->hdr) + sizeof(struct lsa_prefix_sum); | |||
| 312 | prefix = (struct lsa_prefix *)((char *)(v->lsa) + off); | |||
| 313 | if (prefix->options & OSPF_PREFIX_NU0x01) | |||
| 314 | return; | |||
| 315 | ||||
| 316 | bzero(&ia6, sizeof(ia6)); | |||
| 317 | bcopy(prefix + 1, &ia6, LSA_PREFIXSIZE(prefix->prefixlen)(((prefix->prefixlen) + 31)/32 * 4)); | |||
| 318 | ||||
| 319 | rt_update(&ia6, prefix->prefixlen, &w->nexthop, v->type, | |||
| 320 | w->cost + (ntohs(v->lsa->data.rtr_sum.metric)(__uint16_t)(__builtin_constant_p(v->lsa->data.rtr_sum. metric) ? (__uint16_t)(((__uint16_t)(v->lsa->data.rtr_sum .metric) & 0xffU) << 8 | ((__uint16_t)(v->lsa-> data.rtr_sum.metric) & 0xff00U) >> 8) : __swap16md( v->lsa->data.rtr_sum.metric)) & | |||
| 321 | LSA_METRIC_MASK0x00ffffff), 0, area->id, adv_rtr, PT_INTER_AREA, | |||
| 322 | DT_NET, 0, 0); | |||
| 323 | break; | |||
| 324 | case LSA_TYPE_INTER_A_ROUTER0x2004: | |||
| 325 | /* XXX if ABR only look at area 0.0.0.0 LSA */ | |||
| 326 | /* ignore self-originated stuff */ | |||
| 327 | if (v->self) | |||
| 328 | return; | |||
| 329 | ||||
| 330 | adv_rtr.s_addr = htonl(v->adv_rtr)(__uint32_t)(__builtin_constant_p(v->adv_rtr) ? (__uint32_t )(((__uint32_t)(v->adv_rtr) & 0xff) << 24 | ((__uint32_t )(v->adv_rtr) & 0xff00) << 8 | ((__uint32_t)(v-> adv_rtr) & 0xff0000) >> 8 | ((__uint32_t)(v->adv_rtr ) & 0xff000000) >> 24) : __swap32md(v->adv_rtr)); | |||
| 331 | w = lsa_find_rtr(area, adv_rtr.s_addr); | |||
| 332 | if (w == NULL((void*)0)) { | |||
| 333 | warnx("rt_calc: Inter-Area-Router LSA (%s, %u) " | |||
| 334 | "originated from non-existent router", | |||
| 335 | log_rtr_id(htonl(v->adv_rtr)(__uint32_t)(__builtin_constant_p(v->adv_rtr) ? (__uint32_t )(((__uint32_t)(v->adv_rtr) & 0xff) << 24 | ((__uint32_t )(v->adv_rtr) & 0xff00) << 8 | ((__uint32_t)(v-> adv_rtr) & 0xff0000) >> 8 | ((__uint32_t)(v->adv_rtr ) & 0xff000000) >> 24) : __swap32md(v->adv_rtr))), | |||
| 336 | v->ls_id); | |||
| 337 | return; | |||
| 338 | } | |||
| 339 | if (w->cost >= LS_INFINITY0xffffff || TAILQ_EMPTY(&w->nexthop)(((&w->nexthop)->tqh_first) == ((void*)0))) | |||
| 340 | return; | |||
| 341 | ||||
| 342 | /* Add router listed in Inter-Area-Router LSA to routing | |||
| 343 | * table, using w as destination. */ | |||
| 344 | bzero(&ia6, sizeof(ia6)); | |||
| 345 | bcopy(&v->lsa->data.rtr_sum.dest_rtr_id, &ia6.s6_addr__u6_addr.__u6_addr8[12], | |||
| 346 | 4); | |||
| 347 | ||||
| 348 | rt_update(&ia6, 128, &w->nexthop, v->type, w->cost + | |||
| 349 | (ntohs(v->lsa->data.rtr_sum.metric)(__uint16_t)(__builtin_constant_p(v->lsa->data.rtr_sum. metric) ? (__uint16_t)(((__uint16_t)(v->lsa->data.rtr_sum .metric) & 0xffU) << 8 | ((__uint16_t)(v->lsa-> data.rtr_sum.metric) & 0xff00U) >> 8) : __swap16md( v->lsa->data.rtr_sum.metric)) & LSA_METRIC_MASK0x00ffffff), 0, | |||
| 350 | area->id, adv_rtr, PT_INTER_AREA, DT_RTR, 0, 0); | |||
| 351 | break; | |||
| 352 | default: | |||
| 353 | break; | |||
| 354 | } | |||
| 355 | } | |||
| 356 | ||||
| 357 | void | |||
| 358 | asext_calc(struct vertex *v) | |||
| 359 | { | |||
| 360 | struct in6_addr addr, fw_addr; | |||
| 361 | struct rt_node *r; | |||
| 362 | struct rt_nexthop *rn; | |||
| 363 | struct lsa_prefix *prefix; | |||
| 364 | struct in_addr adv_rtr, area; | |||
| 365 | char *p; | |||
| 366 | u_int32_t metric, cost2, ext_tag = 0; | |||
| 367 | enum path_type type; | |||
| 368 | ||||
| 369 | lsa_age(v); | |||
| 370 | if (ntohs(v->lsa->hdr.age)(__uint16_t)(__builtin_constant_p(v->lsa->hdr.age) ? (__uint16_t )(((__uint16_t)(v->lsa->hdr.age) & 0xffU) << 8 | ((__uint16_t)(v->lsa->hdr.age) & 0xff00U) >> 8) : __swap16md(v->lsa->hdr.age)) == MAX_AGE3600 || | |||
| 371 | (ntohl(v->lsa->data.asext.metric)(__uint32_t)(__builtin_constant_p(v->lsa->data.asext.metric ) ? (__uint32_t)(((__uint32_t)(v->lsa->data.asext.metric ) & 0xff) << 24 | ((__uint32_t)(v->lsa->data. asext.metric) & 0xff00) << 8 | ((__uint32_t)(v-> lsa->data.asext.metric) & 0xff0000) >> 8 | ((__uint32_t )(v->lsa->data.asext.metric) & 0xff000000) >> 24) : __swap32md(v->lsa->data.asext.metric)) & LSA_METRIC_MASK0x00ffffff) >= | |||
| 372 | LS_INFINITY0xffffff) | |||
| 373 | return; | |||
| 374 | ||||
| 375 | switch (v->type) { | |||
| 376 | case LSA_TYPE_EXTERNAL0x4005: | |||
| 377 | /* ignore self-originated stuff */ | |||
| 378 | if (v->self) | |||
| 379 | return; | |||
| 380 | ||||
| 381 | adv_rtr.s_addr = htonl(v->adv_rtr)(__uint32_t)(__builtin_constant_p(v->adv_rtr) ? (__uint32_t )(((__uint32_t)(v->adv_rtr) & 0xff) << 24 | ((__uint32_t )(v->adv_rtr) & 0xff00) << 8 | ((__uint32_t)(v-> adv_rtr) & 0xff0000) >> 8 | ((__uint32_t)(v->adv_rtr ) & 0xff000000) >> 24) : __swap32md(v->adv_rtr)); | |||
| 382 | bzero(&addr, sizeof(addr)); | |||
| 383 | bcopy(&adv_rtr, &addr.s6_addr__u6_addr.__u6_addr8[12], sizeof(adv_rtr)); | |||
| 384 | if ((r = rt_lookup(DT_RTR, &addr)) == NULL((void*)0)) | |||
| 385 | return; | |||
| 386 | ||||
| 387 | prefix = &v->lsa->data.asext.prefix; | |||
| 388 | if (prefix->options & OSPF_PREFIX_NU0x01) | |||
| 389 | break; | |||
| 390 | bzero(&addr, sizeof(addr)); | |||
| 391 | bcopy(prefix + 1, &addr, | |||
| 392 | LSA_PREFIXSIZE(prefix->prefixlen)(((prefix->prefixlen) + 31)/32 * 4)); | |||
| 393 | ||||
| 394 | p = (char *)(prefix + 1) + LSA_PREFIXSIZE(prefix->prefixlen)(((prefix->prefixlen) + 31)/32 * 4); | |||
| 395 | metric = ntohl(v->lsa->data.asext.metric)(__uint32_t)(__builtin_constant_p(v->lsa->data.asext.metric ) ? (__uint32_t)(((__uint32_t)(v->lsa->data.asext.metric ) & 0xff) << 24 | ((__uint32_t)(v->lsa->data. asext.metric) & 0xff00) << 8 | ((__uint32_t)(v-> lsa->data.asext.metric) & 0xff0000) >> 8 | ((__uint32_t )(v->lsa->data.asext.metric) & 0xff000000) >> 24) : __swap32md(v->lsa->data.asext.metric)); | |||
| 396 | ||||
| 397 | if (metric & LSA_ASEXT_F_FLAG0x02000000) { | |||
| 398 | bcopy(p, &fw_addr, sizeof(fw_addr)); | |||
| 399 | p += sizeof(fw_addr); | |||
| 400 | ||||
| 401 | /* lookup forwarding address */ | |||
| 402 | if ((r = rt_lookup(DT_NET, &fw_addr)) == NULL((void*)0) || | |||
| 403 | (r->p_type != PT_INTRA_AREA && | |||
| 404 | r->p_type != PT_INTER_AREA)) | |||
| 405 | return; | |||
| 406 | } | |||
| 407 | if (metric & LSA_ASEXT_T_FLAG0x01000000) { | |||
| 408 | bcopy(p, &ext_tag, sizeof(ext_tag)); | |||
| 409 | p += sizeof(ext_tag); | |||
| 410 | } | |||
| 411 | if (metric & LSA_ASEXT_E_FLAG0x04000000) { | |||
| 412 | v->cost = r->cost; | |||
| 413 | cost2 = metric & LSA_METRIC_MASK0x00ffffff; | |||
| 414 | type = PT_TYPE2_EXT; | |||
| 415 | } else { | |||
| 416 | v->cost = r->cost + (metric & LSA_METRIC_MASK0x00ffffff); | |||
| 417 | cost2 = 0; | |||
| 418 | type = PT_TYPE1_EXT; | |||
| 419 | } | |||
| 420 | ||||
| 421 | area.s_addr = 0; | |||
| 422 | vertex_nexthop_clear(v); | |||
| 423 | TAILQ_FOREACH(rn, &r->nexthop, entry)for((rn) = ((&r->nexthop)->tqh_first); (rn) != ((void *)0); (rn) = ((rn)->entry.tqe_next)) { | |||
| 424 | if (rn->invalid) | |||
| 425 | continue; | |||
| 426 | ||||
| 427 | if (rn->connected && r->d_type == DT_NET) { | |||
| 428 | if (metric & LSA_ASEXT_F_FLAG0x02000000) | |||
| 429 | vertex_nexthop_add(v, NULL((void*)0), &fw_addr, | |||
| 430 | rn->ifindex); | |||
| 431 | else | |||
| 432 | fatalx("asext_calc: I'm sorry Dave, " | |||
| 433 | "I'm afraid I can't do that."); | |||
| 434 | } else | |||
| 435 | vertex_nexthop_add(v, NULL((void*)0), &rn->nexthop, | |||
| 436 | rn->ifindex); | |||
| 437 | } | |||
| 438 | ||||
| 439 | rt_update(&addr, prefix->prefixlen, &v->nexthop, v->type, | |||
| 440 | v->cost, cost2, area, adv_rtr, type, DT_NET, 0, ext_tag); | |||
| 441 | break; | |||
| 442 | default: | |||
| 443 | fatalx("asext_calc: invalid LSA type"); | |||
| 444 | } | |||
| 445 | } | |||
| 446 | ||||
| 447 | void | |||
| 448 | spf_tree_clr(struct area *area) | |||
| 449 | { | |||
| 450 | struct lsa_tree *tree = &area->lsa_tree; | |||
| 451 | struct vertex *v; | |||
| 452 | ||||
| 453 | RB_FOREACH(v, lsa_tree, tree)for ((v) = lsa_tree_RB_MINMAX(tree, -1); (v) != ((void*)0); ( v) = lsa_tree_RB_NEXT(v)) { | |||
| 454 | v->cost = LS_INFINITY0xffffff; | |||
| 455 | vertex_nexthop_clear(v); | |||
| 456 | } | |||
| 457 | } | |||
| 458 | ||||
| 459 | struct in6_addr * | |||
| 460 | calc_nexthop_lladdr(struct vertex *dst, struct lsa_rtr_link *rtr_link, | |||
| 461 | unsigned int ifindex) | |||
| 462 | { | |||
| 463 | struct iface *iface; | |||
| 464 | struct vertex *link; | |||
| 465 | struct rde_nbr *nbr; | |||
| 466 | ||||
| 467 | /* Find outgoing interface, we need its LSA tree */ | |||
| 468 | LIST_FOREACH(iface, &dst->area->iface_list, entry)for((iface) = ((&dst->area->iface_list)->lh_first ); (iface)!= ((void*)0); (iface) = ((iface)->entry.le_next )) { | |||
| 469 | if (ifindex == iface->ifindex) | |||
| 470 | break; | |||
| 471 | } | |||
| 472 | if (!iface) { | |||
| 473 | log_warnx("calc_nexthop_lladdr: no interface found for " | |||
| 474 | "ifindex %d", ntohl(rtr_link->iface_id)(__uint32_t)(__builtin_constant_p(rtr_link->iface_id) ? (__uint32_t )(((__uint32_t)(rtr_link->iface_id) & 0xff) << 24 | ((__uint32_t)(rtr_link->iface_id) & 0xff00) << 8 | ((__uint32_t)(rtr_link->iface_id) & 0xff0000) >> 8 | ((__uint32_t)(rtr_link->iface_id) & 0xff000000) >> 24) : __swap32md(rtr_link->iface_id))); | |||
| 475 | return (NULL((void*)0)); | |||
| 476 | } | |||
| 477 | ||||
| 478 | /* Determine neighbor's link-local address. | |||
| 479 | * Try to get it from link LSA first. */ | |||
| 480 | link = lsa_find_tree(&iface->lsa_tree, | |||
| 481 | htons(LSA_TYPE_LINK)(__uint16_t)(__builtin_constant_p(0x0008) ? (__uint16_t)(((__uint16_t )(0x0008) & 0xffU) << 8 | ((__uint16_t)(0x0008) & 0xff00U) >> 8) : __swap16md(0x0008)), rtr_link->iface_id, | |||
| 482 | htonl(dst->adv_rtr)(__uint32_t)(__builtin_constant_p(dst->adv_rtr) ? (__uint32_t )(((__uint32_t)(dst->adv_rtr) & 0xff) << 24 | (( __uint32_t)(dst->adv_rtr) & 0xff00) << 8 | ((__uint32_t )(dst->adv_rtr) & 0xff0000) >> 8 | ((__uint32_t) (dst->adv_rtr) & 0xff000000) >> 24) : __swap32md (dst->adv_rtr))); | |||
| 483 | if (link) | |||
| 484 | return &link->lsa->data.link.lladdr; | |||
| 485 | ||||
| 486 | /* Not found, so fall back to source address | |||
| 487 | * advertised in hello packet. */ | |||
| 488 | if ((nbr = rde_nbr_find(dst->peerid)) == NULL((void*)0)) | |||
| 489 | fatalx("next hop is not a neighbor"); | |||
| 490 | return &nbr->addr; | |||
| 491 | } | |||
| 492 | ||||
| 493 | void | |||
| 494 | calc_nexthop_transit_nbr(struct vertex *dst, struct vertex *parent, | |||
| 495 | unsigned int ifindex) | |||
| 496 | { | |||
| 497 | struct lsa_rtr_link *rtr_link; | |||
| 498 | unsigned int i; | |||
| 499 | struct in6_addr *lladdr; | |||
| 500 | ||||
| 501 | if (dst->type != LSA_TYPE_ROUTER0x2001) | |||
| 502 | fatalx("calc_nexthop_transit_nbr: dst is not a router"); | |||
| 503 | if (parent->type != LSA_TYPE_NETWORK0x2002) | |||
| 504 | fatalx("calc_nexthop_transit_nbr: parent is not a network"); | |||
| 505 | ||||
| 506 | /* dst is a neighbor on a directly attached transit network. | |||
| 507 | * Figure out dst's link local address and add it as nexthop. */ | |||
| 508 | for (i = 0; i < lsa_num_links(dst); i++) { | |||
| 509 | rtr_link = get_rtr_link(dst, i); | |||
| 510 | if (rtr_link->type == LINK_TYPE_TRANSIT_NET2 && | |||
| 511 | rtr_link->nbr_rtr_id == parent->lsa->hdr.adv_rtr && | |||
| 512 | rtr_link->nbr_iface_id == parent->lsa->hdr.ls_id) { | |||
| 513 | lladdr = calc_nexthop_lladdr(dst, rtr_link, ifindex); | |||
| 514 | vertex_nexthop_add(dst, parent, lladdr, ifindex); | |||
| 515 | } | |||
| 516 | } | |||
| 517 | } | |||
| 518 | ||||
| 519 | void | |||
| 520 | calc_nexthop(struct vertex *dst, struct vertex *parent, | |||
| 521 | struct area *area, struct lsa_rtr_link *rtr_link) | |||
| 522 | { | |||
| 523 | struct v_nexthop *vn; | |||
| 524 | struct in6_addr *nexthop; | |||
| 525 | ||||
| 526 | /* case 1 */ | |||
| 527 | if (parent == spf_root) { | |||
| 528 | switch (dst->type) { | |||
| 529 | case LSA_TYPE_ROUTER0x2001: | |||
| 530 | if (rtr_link->type != LINK_TYPE_POINTTOPOINT1) | |||
| 531 | fatalx("inconsistent SPF tree"); | |||
| 532 | nexthop = calc_nexthop_lladdr(dst, rtr_link, | |||
| 533 | ntohl(rtr_link->iface_id)(__uint32_t)(__builtin_constant_p(rtr_link->iface_id) ? (__uint32_t )(((__uint32_t)(rtr_link->iface_id) & 0xff) << 24 | ((__uint32_t)(rtr_link->iface_id) & 0xff00) << 8 | ((__uint32_t)(rtr_link->iface_id) & 0xff0000) >> 8 | ((__uint32_t)(rtr_link->iface_id) & 0xff000000) >> 24) : __swap32md(rtr_link->iface_id))); | |||
| 534 | break; | |||
| 535 | case LSA_TYPE_NETWORK0x2002: | |||
| 536 | if (rtr_link->type != LINK_TYPE_TRANSIT_NET2) | |||
| 537 | fatalx("inconsistent SPF tree"); | |||
| 538 | ||||
| 539 | /* Next hop address cannot be determined yet, | |||
| 540 | * we only know the outgoing interface. */ | |||
| 541 | nexthop = NULL((void*)0); | |||
| 542 | break; | |||
| 543 | default: | |||
| 544 | fatalx("calc_nexthop: invalid dst type"); | |||
| 545 | } | |||
| 546 | ||||
| 547 | vertex_nexthop_add(dst, parent, nexthop, | |||
| 548 | ntohl(rtr_link->iface_id)(__uint32_t)(__builtin_constant_p(rtr_link->iface_id) ? (__uint32_t )(((__uint32_t)(rtr_link->iface_id) & 0xff) << 24 | ((__uint32_t)(rtr_link->iface_id) & 0xff00) << 8 | ((__uint32_t)(rtr_link->iface_id) & 0xff0000) >> 8 | ((__uint32_t)(rtr_link->iface_id) & 0xff000000) >> 24) : __swap32md(rtr_link->iface_id))); | |||
| 549 | return; | |||
| 550 | } | |||
| 551 | ||||
| 552 | /* case 2 */ | |||
| 553 | if (parent->type == LSA_TYPE_NETWORK0x2002 && dst->type == LSA_TYPE_ROUTER0x2001) { | |||
| 554 | TAILQ_FOREACH(vn, &parent->nexthop, entry)for((vn) = ((&parent->nexthop)->tqh_first); (vn) != ((void*)0); (vn) = ((vn)->entry.tqe_next)) { | |||
| 555 | if (vn->prev == spf_root) | |||
| 556 | calc_nexthop_transit_nbr(dst, parent, | |||
| 557 | vn->ifindex); | |||
| 558 | else | |||
| 559 | /* dst is more than one transit net away */ | |||
| 560 | vertex_nexthop_add(dst, parent, &vn->nexthop, | |||
| 561 | vn->ifindex); | |||
| 562 | } | |||
| 563 | return; | |||
| 564 | } | |||
| 565 | ||||
| 566 | /* case 3 */ | |||
| 567 | TAILQ_FOREACH(vn, &parent->nexthop, entry)for((vn) = ((&parent->nexthop)->tqh_first); (vn) != ((void*)0); (vn) = ((vn)->entry.tqe_next)) | |||
| 568 | vertex_nexthop_add(dst, parent, &vn->nexthop, vn->ifindex); | |||
| 569 | } | |||
| 570 | ||||
| 571 | /* candidate list */ | |||
| 572 | void | |||
| 573 | cand_list_init(void) | |||
| 574 | { | |||
| 575 | TAILQ_INIT(&cand_list)do { (&cand_list)->tqh_first = ((void*)0); (&cand_list )->tqh_last = &(&cand_list)->tqh_first; } while (0); | |||
| 576 | } | |||
| 577 | ||||
| 578 | void | |||
| 579 | cand_list_add(struct vertex *v) | |||
| 580 | { | |||
| 581 | struct vertex *c = NULL((void*)0); | |||
| 582 | ||||
| 583 | TAILQ_FOREACH(c, &cand_list, cand)for((c) = ((&cand_list)->tqh_first); (c) != ((void*)0) ; (c) = ((c)->cand.tqe_next)) { | |||
| 584 | if (c->cost > v->cost) { | |||
| 585 | TAILQ_INSERT_BEFORE(c, v, cand)do { (v)->cand.tqe_prev = (c)->cand.tqe_prev; (v)->cand .tqe_next = (c); *(c)->cand.tqe_prev = (v); (c)->cand.tqe_prev = &(v)->cand.tqe_next; } while (0); | |||
| 586 | return; | |||
| 587 | } else if (c->cost == v->cost && c->type == LSA_TYPE_ROUTER0x2001 && | |||
| 588 | v->type == LSA_TYPE_NETWORK0x2002) { | |||
| 589 | TAILQ_INSERT_BEFORE(c, v, cand)do { (v)->cand.tqe_prev = (c)->cand.tqe_prev; (v)->cand .tqe_next = (c); *(c)->cand.tqe_prev = (v); (c)->cand.tqe_prev = &(v)->cand.tqe_next; } while (0); | |||
| 590 | return; | |||
| 591 | } | |||
| 592 | } | |||
| 593 | TAILQ_INSERT_TAIL(&cand_list, v, cand)do { (v)->cand.tqe_next = ((void*)0); (v)->cand.tqe_prev = (&cand_list)->tqh_last; *(&cand_list)->tqh_last = (v); (&cand_list)->tqh_last = &(v)->cand.tqe_next ; } while (0); | |||
| 594 | } | |||
| 595 | ||||
| 596 | struct vertex * | |||
| 597 | cand_list_pop(void) | |||
| 598 | { | |||
| 599 | struct vertex *c; | |||
| 600 | ||||
| 601 | if ((c = TAILQ_FIRST(&cand_list)((&cand_list)->tqh_first)) != NULL((void*)0)) { | |||
| 602 | TAILQ_REMOVE(&cand_list, c, cand)do { if (((c)->cand.tqe_next) != ((void*)0)) (c)->cand. tqe_next->cand.tqe_prev = (c)->cand.tqe_prev; else (& cand_list)->tqh_last = (c)->cand.tqe_prev; *(c)->cand .tqe_prev = (c)->cand.tqe_next; ; ; } while (0); | |||
| 603 | } | |||
| 604 | ||||
| 605 | return (c); | |||
| 606 | } | |||
| 607 | ||||
| 608 | int | |||
| 609 | cand_list_present(struct vertex *v) | |||
| 610 | { | |||
| 611 | struct vertex *c; | |||
| 612 | ||||
| 613 | TAILQ_FOREACH(c, &cand_list, cand)for((c) = ((&cand_list)->tqh_first); (c) != ((void*)0) ; (c) = ((c)->cand.tqe_next)) { | |||
| 614 | if (c == v) | |||
| 615 | return (1); | |||
| 616 | } | |||
| 617 | ||||
| 618 | return (0); | |||
| 619 | } | |||
| 620 | ||||
| 621 | void | |||
| 622 | cand_list_clr(void) | |||
| 623 | { | |||
| 624 | struct vertex *c; | |||
| 625 | ||||
| 626 | while ((c = TAILQ_FIRST(&cand_list)((&cand_list)->tqh_first)) != NULL((void*)0)) { | |||
| 627 | TAILQ_REMOVE(&cand_list, c, cand)do { if (((c)->cand.tqe_next) != ((void*)0)) (c)->cand. tqe_next->cand.tqe_prev = (c)->cand.tqe_prev; else (& cand_list)->tqh_last = (c)->cand.tqe_prev; *(c)->cand .tqe_prev = (c)->cand.tqe_next; ; ; } while (0); | |||
| 628 | } | |||
| 629 | } | |||
| 630 | ||||
| 631 | /* timers */ | |||
| 632 | /* ARGSUSED */ | |||
| 633 | void | |||
| 634 | spf_timer(int fd, short event, void *arg) | |||
| 635 | { | |||
| 636 | struct vertex *v; | |||
| 637 | struct ospfd_conf *conf = arg; | |||
| 638 | struct area *area; | |||
| 639 | struct rt_node *r; | |||
| 640 | ||||
| 641 | switch (conf->spf_state) { | |||
| ||||
| 642 | case SPF_IDLE: | |||
| 643 | fatalx("spf_timer: invalid state IDLE"); | |||
| 644 | case SPF_HOLDQUEUE: | |||
| 645 | conf->spf_state = SPF_DELAY; | |||
| 646 | /* FALLTHROUGH */ | |||
| 647 | case SPF_DELAY: | |||
| 648 | LIST_FOREACH(area, &conf->area_list, entry)for((area) = ((&conf->area_list)->lh_first); (area) != ((void*)0); (area) = ((area)->entry.le_next)) { | |||
| 649 | if (area->dirty) { | |||
| 650 | /* invalidate RIB entries of this area */ | |||
| 651 | rt_invalidate(area); | |||
| 652 | ||||
| 653 | /* calculate SPF tree */ | |||
| 654 | spf_calc(area); | |||
| 655 | ||||
| 656 | /* calculate route table */ | |||
| 657 | RB_FOREACH(v, lsa_tree, &area->lsa_tree)for ((v) = lsa_tree_RB_MINMAX(&area->lsa_tree, -1); (v ) != ((void*)0); (v) = lsa_tree_RB_NEXT(v)) { | |||
| 658 | rt_calc(v, area, conf); | |||
| 659 | } | |||
| 660 | ||||
| 661 | area->dirty = 0; | |||
| 662 | } | |||
| 663 | } | |||
| 664 | ||||
| 665 | /* calculate as-external routes, first invalidate them */ | |||
| 666 | rt_invalidate(NULL((void*)0)); | |||
| 667 | RB_FOREACH(v, lsa_tree, &asext_tree)for ((v) = lsa_tree_RB_MINMAX(&asext_tree, -1); (v) != (( void*)0); (v) = lsa_tree_RB_NEXT(v)) { | |||
| 668 | asext_calc(v); | |||
| 669 | } | |||
| 670 | ||||
| 671 | RB_FOREACH(r, rt_tree, &rt)for ((r) = rt_tree_RB_MINMAX(&rt, -1); (r) != ((void*)0); (r) = rt_tree_RB_NEXT(r)) { | |||
| 672 | LIST_FOREACH(area, &conf->area_list, entry)for((area) = ((&conf->area_list)->lh_first); (area) != ((void*)0); (area) = ((area)->entry.le_next)) | |||
| 673 | rde_summary_update(r, area); | |||
| 674 | ||||
| 675 | if (r->d_type != DT_NET) | |||
| 676 | continue; | |||
| 677 | ||||
| 678 | if (r->invalid) | |||
| 679 | rde_send_delete_kroute(r); | |||
| 680 | else | |||
| 681 | rde_send_change_kroute(r); | |||
| 682 | } | |||
| 683 | ||||
| 684 | LIST_FOREACH(area, &conf->area_list, entry)for((area) = ((&conf->area_list)->lh_first); (area) != ((void*)0); (area) = ((area)->entry.le_next)) | |||
| 685 | lsa_remove_invalid_sums(area); | |||
| 686 | ||||
| 687 | start_spf_holdtimer(conf); | |||
| 688 | break; | |||
| 689 | case SPF_HOLD: | |||
| 690 | conf->spf_state = SPF_IDLE; | |||
| 691 | break; | |||
| 692 | default: | |||
| 693 | fatalx("spf_timer: unknown state"); | |||
| 694 | } | |||
| 695 | } | |||
| 696 | ||||
| 697 | void | |||
| 698 | start_spf_timer(void) | |||
| 699 | { | |||
| 700 | struct timeval tv; | |||
| 701 | ||||
| 702 | switch (rdeconf->spf_state) { | |||
| 703 | case SPF_IDLE: | |||
| 704 | timerclear(&tv)(&tv)->tv_sec = (&tv)->tv_usec = 0; | |||
| 705 | tv.tv_sec = rdeconf->spf_delay; | |||
| 706 | rdeconf->spf_state = SPF_DELAY; | |||
| 707 | if (evtimer_add(&rdeconf->ev, &tv)event_add(&rdeconf->ev, &tv) == -1) | |||
| 708 | fatal("start_spf_timer"); | |||
| 709 | break; | |||
| 710 | case SPF_DELAY: | |||
| 711 | /* ignore */ | |||
| 712 | break; | |||
| 713 | case SPF_HOLD: | |||
| 714 | rdeconf->spf_state = SPF_HOLDQUEUE; | |||
| 715 | break; | |||
| 716 | case SPF_HOLDQUEUE: | |||
| 717 | /* ignore */ | |||
| 718 | break; | |||
| 719 | default: | |||
| 720 | fatalx("start_spf_timer: invalid spf_state"); | |||
| 721 | } | |||
| 722 | } | |||
| 723 | ||||
| 724 | void | |||
| 725 | stop_spf_timer(struct ospfd_conf *conf) | |||
| 726 | { | |||
| 727 | if (evtimer_del(&conf->ev)event_del(&conf->ev) == -1) | |||
| 728 | fatal("stop_spf_timer"); | |||
| 729 | } | |||
| 730 | ||||
| 731 | void | |||
| 732 | start_spf_holdtimer(struct ospfd_conf *conf) | |||
| 733 | { | |||
| 734 | struct timeval tv; | |||
| 735 | ||||
| 736 | switch (conf->spf_state) { | |||
| 737 | case SPF_DELAY: | |||
| 738 | timerclear(&tv)(&tv)->tv_sec = (&tv)->tv_usec = 0; | |||
| 739 | tv.tv_sec = conf->spf_hold_time; | |||
| 740 | conf->spf_state = SPF_HOLD; | |||
| 741 | if (evtimer_add(&conf->ev, &tv)event_add(&conf->ev, &tv) == -1) | |||
| 742 | fatal("start_spf_holdtimer"); | |||
| 743 | break; | |||
| 744 | case SPF_IDLE: | |||
| 745 | case SPF_HOLD: | |||
| 746 | case SPF_HOLDQUEUE: | |||
| 747 | fatalx("start_spf_holdtimer: invalid state"); | |||
| 748 | default: | |||
| 749 | fatalx("start_spf_holdtimer: unknown state"); | |||
| 750 | } | |||
| 751 | } | |||
| 752 | ||||
| 753 | /* route table */ | |||
| 754 | void | |||
| 755 | rt_init(void) | |||
| 756 | { | |||
| 757 | RB_INIT(&rt)do { (&rt)->rbh_root = ((void*)0); } while (0); | |||
| 758 | } | |||
| 759 | ||||
| 760 | int | |||
| 761 | rt_compare(struct rt_node *a, struct rt_node *b) | |||
| 762 | { | |||
| 763 | int i; | |||
| 764 | ||||
| 765 | /* XXX maybe a & b need to be switched */ | |||
| 766 | i = memcmp(&a->prefix, &b->prefix, sizeof(a->prefix)); | |||
| 767 | if (i) | |||
| 768 | return (i); | |||
| 769 | if (a->prefixlen < b->prefixlen) | |||
| 770 | return (-1); | |||
| 771 | if (a->prefixlen > b->prefixlen) | |||
| 772 | return (1); | |||
| 773 | if (a->d_type > b->d_type) | |||
| 774 | return (-1); | |||
| 775 | if (a->d_type < b->d_type) | |||
| 776 | return (1); | |||
| 777 | return (0); | |||
| 778 | } | |||
| 779 | ||||
| 780 | struct rt_node * | |||
| 781 | rt_find(struct in6_addr *prefix, u_int8_t prefixlen, enum dst_type d_type) | |||
| 782 | { | |||
| 783 | struct rt_node s; | |||
| 784 | ||||
| 785 | s.prefix = *prefix; | |||
| 786 | s.prefixlen = prefixlen; | |||
| 787 | s.d_type = d_type; | |||
| 788 | ||||
| 789 | return (RB_FIND(rt_tree, &rt, &s)rt_tree_RB_FIND(&rt, &s)); | |||
| 790 | } | |||
| 791 | ||||
| 792 | int | |||
| 793 | rt_insert(struct rt_node *r) | |||
| 794 | { | |||
| 795 | if (RB_INSERT(rt_tree, &rt, r)rt_tree_RB_INSERT(&rt, r) != NULL((void*)0)) { | |||
| 796 | log_warnx("rt_insert failed for %s/%u", | |||
| 797 | log_in6addr(&r->prefix), r->prefixlen); | |||
| 798 | free(r); | |||
| 799 | return (-1); | |||
| 800 | } | |||
| 801 | ||||
| 802 | return (0); | |||
| 803 | } | |||
| 804 | ||||
| 805 | int | |||
| 806 | rt_remove(struct rt_node *r) | |||
| 807 | { | |||
| 808 | if (RB_REMOVE(rt_tree, &rt, r)rt_tree_RB_REMOVE(&rt, r) == NULL((void*)0)) { | |||
| 809 | log_warnx("rt_remove failed for %s/%u", | |||
| 810 | log_in6addr(&r->prefix), r->prefixlen); | |||
| 811 | return (-1); | |||
| 812 | } | |||
| 813 | ||||
| 814 | rt_nexthop_clear(r); | |||
| 815 | free(r); | |||
| 816 | return (0); | |||
| 817 | } | |||
| 818 | ||||
| 819 | void | |||
| 820 | rt_invalidate(struct area *area) | |||
| 821 | { | |||
| 822 | struct rt_node *r, *nr; | |||
| 823 | struct rt_nexthop *rn, *nrn; | |||
| 824 | ||||
| 825 | for (r = RB_MIN(rt_tree, &rt)rt_tree_RB_MINMAX(&rt, -1); r != NULL((void*)0); r = nr) { | |||
| 826 | nr = RB_NEXT(rt_tree, &rt, r)rt_tree_RB_NEXT(r); | |||
| 827 | if (area == NULL((void*)0)) { | |||
| 828 | /* look only at as_ext routes */ | |||
| 829 | if (r->p_type != PT_TYPE1_EXT && | |||
| 830 | r->p_type != PT_TYPE2_EXT) | |||
| 831 | continue; | |||
| 832 | } else { | |||
| 833 | /* ignore all as_ext routes */ | |||
| 834 | if (r->p_type == PT_TYPE1_EXT || | |||
| 835 | r->p_type == PT_TYPE2_EXT) | |||
| 836 | continue; | |||
| 837 | ||||
| 838 | /* look only at routes matching the area */ | |||
| 839 | if (r->area.s_addr != area->id.s_addr) | |||
| 840 | continue; | |||
| 841 | } | |||
| 842 | r->invalid = 1; | |||
| 843 | for (rn = TAILQ_FIRST(&r->nexthop)((&r->nexthop)->tqh_first); rn != NULL((void*)0); rn = nrn) { | |||
| 844 | nrn = TAILQ_NEXT(rn, entry)((rn)->entry.tqe_next); | |||
| 845 | if (rn->invalid) { | |||
| 846 | TAILQ_REMOVE(&r->nexthop, rn, entry)do { if (((rn)->entry.tqe_next) != ((void*)0)) (rn)->entry .tqe_next->entry.tqe_prev = (rn)->entry.tqe_prev; else ( &r->nexthop)->tqh_last = (rn)->entry.tqe_prev; * (rn)->entry.tqe_prev = (rn)->entry.tqe_next; ; ; } while (0); | |||
| 847 | free(rn); | |||
| 848 | } else | |||
| 849 | rn->invalid = 1; | |||
| 850 | } | |||
| 851 | if (TAILQ_EMPTY(&r->nexthop)(((&r->nexthop)->tqh_first) == ((void*)0))) | |||
| 852 | rt_remove(r); | |||
| 853 | } | |||
| 854 | } | |||
| 855 | ||||
| 856 | void | |||
| 857 | rt_nexthop_clear(struct rt_node *r) | |||
| 858 | { | |||
| 859 | struct rt_nexthop *rn; | |||
| 860 | ||||
| 861 | while ((rn = TAILQ_FIRST(&r->nexthop)((&r->nexthop)->tqh_first)) != NULL((void*)0)) { | |||
| 862 | TAILQ_REMOVE(&r->nexthop, rn, entry)do { if (((rn)->entry.tqe_next) != ((void*)0)) (rn)->entry .tqe_next->entry.tqe_prev = (rn)->entry.tqe_prev; else ( &r->nexthop)->tqh_last = (rn)->entry.tqe_prev; * (rn)->entry.tqe_prev = (rn)->entry.tqe_next; ; ; } while (0); | |||
| 863 | free(rn); | |||
| 864 | } | |||
| 865 | } | |||
| 866 | ||||
| 867 | void | |||
| 868 | rt_nexthop_add(struct rt_node *r, struct v_nexthead *vnh, u_int16_t type, | |||
| 869 | struct in_addr adv_rtr) | |||
| 870 | { | |||
| 871 | struct v_nexthop *vn; | |||
| 872 | struct rt_nexthop *rn; | |||
| 873 | struct timespec now; | |||
| 874 | ||||
| 875 | TAILQ_FOREACH(vn, vnh, entry)for((vn) = ((vnh)->tqh_first); (vn) != ((void*)0); (vn) = ( (vn)->entry.tqe_next)) { | |||
| 876 | TAILQ_FOREACH(rn, &r->nexthop, entry)for((rn) = ((&r->nexthop)->tqh_first); (rn) != ((void *)0); (rn) = ((rn)->entry.tqe_next)) { | |||
| 877 | if (!IN6_ARE_ADDR_EQUAL(&rn->nexthop, &vn->nexthop)(memcmp(&(&rn->nexthop)->__u6_addr.__u6_addr8[0 ], &(&vn->nexthop)->__u6_addr.__u6_addr8[0], sizeof (struct in6_addr)) == 0)) | |||
| 878 | continue; | |||
| 879 | ||||
| 880 | rn->adv_rtr.s_addr = adv_rtr.s_addr; | |||
| 881 | rn->connected = (type == LSA_TYPE_NETWORK0x2002 && | |||
| 882 | vn->prev == spf_root) || | |||
| 883 | (IN6_IS_ADDR_UNSPECIFIED(&vn->nexthop)((*(const u_int32_t *)(const void *)(&(&vn->nexthop )->__u6_addr.__u6_addr8[0]) == 0) && (*(const u_int32_t *)(const void *)(&(&vn->nexthop)->__u6_addr.__u6_addr8 [4]) == 0) && (*(const u_int32_t *)(const void *)(& (&vn->nexthop)->__u6_addr.__u6_addr8[8]) == 0) && (*(const u_int32_t *)(const void *)(&(&vn->nexthop )->__u6_addr.__u6_addr8[12]) == 0))); | |||
| 884 | rn->invalid = 0; | |||
| 885 | ||||
| 886 | r->invalid = 0; | |||
| 887 | break; | |||
| 888 | } | |||
| 889 | if (rn) | |||
| 890 | continue; | |||
| 891 | ||||
| 892 | if ((rn = calloc(1, sizeof(struct rt_nexthop))) == NULL((void*)0)) | |||
| 893 | fatal("rt_nexthop_add"); | |||
| 894 | ||||
| 895 | clock_gettime(CLOCK_MONOTONIC3, &now); | |||
| 896 | rn->nexthop = vn->nexthop; | |||
| 897 | rn->ifindex = vn->ifindex; | |||
| 898 | rn->adv_rtr.s_addr = adv_rtr.s_addr; | |||
| 899 | rn->uptime = now.tv_sec; | |||
| 900 | rn->connected = (type == LSA_TYPE_NETWORK0x2002 && | |||
| 901 | vn->prev == spf_root) || | |||
| 902 | (IN6_IS_ADDR_UNSPECIFIED(&vn->nexthop)((*(const u_int32_t *)(const void *)(&(&vn->nexthop )->__u6_addr.__u6_addr8[0]) == 0) && (*(const u_int32_t *)(const void *)(&(&vn->nexthop)->__u6_addr.__u6_addr8 [4]) == 0) && (*(const u_int32_t *)(const void *)(& (&vn->nexthop)->__u6_addr.__u6_addr8[8]) == 0) && (*(const u_int32_t *)(const void *)(&(&vn->nexthop )->__u6_addr.__u6_addr8[12]) == 0))); | |||
| 903 | rn->invalid = 0; | |||
| 904 | ||||
| 905 | r->invalid = 0; | |||
| 906 | TAILQ_INSERT_TAIL(&r->nexthop, rn, entry)do { (rn)->entry.tqe_next = ((void*)0); (rn)->entry.tqe_prev = (&r->nexthop)->tqh_last; *(&r->nexthop)-> tqh_last = (rn); (&r->nexthop)->tqh_last = &(rn )->entry.tqe_next; } while (0); | |||
| 907 | } | |||
| 908 | } | |||
| 909 | ||||
| 910 | void | |||
| 911 | rt_clear(void) | |||
| 912 | { | |||
| 913 | struct rt_node *r; | |||
| 914 | ||||
| 915 | while ((r = RB_MIN(rt_tree, &rt)rt_tree_RB_MINMAX(&rt, -1)) != NULL((void*)0)) | |||
| 916 | rt_remove(r); | |||
| 917 | } | |||
| 918 | ||||
| 919 | void | |||
| 920 | rt_dump(struct in_addr area, pid_t pid, u_int8_t r_type) | |||
| 921 | { | |||
| 922 | static struct ctl_rt rtctl; | |||
| 923 | struct timespec now; | |||
| 924 | struct rt_node *r; | |||
| 925 | struct rt_nexthop *rn; | |||
| 926 | ||||
| 927 | clock_gettime(CLOCK_MONOTONIC3, &now); | |||
| 928 | ||||
| 929 | RB_FOREACH(r, rt_tree, &rt)for ((r) = rt_tree_RB_MINMAX(&rt, -1); (r) != ((void*)0); (r) = rt_tree_RB_NEXT(r)) { | |||
| 930 | if (r->invalid) | |||
| 931 | continue; | |||
| 932 | ||||
| 933 | if (r->area.s_addr != area.s_addr) | |||
| 934 | continue; | |||
| 935 | ||||
| 936 | switch (r_type) { | |||
| 937 | case RIB_RTR: | |||
| 938 | if (r->d_type != DT_RTR) | |||
| 939 | continue; | |||
| 940 | break; | |||
| 941 | case RIB_NET: | |||
| 942 | if (r->d_type != DT_NET) | |||
| 943 | continue; | |||
| 944 | if (r->p_type == PT_TYPE1_EXT || | |||
| 945 | r->p_type == PT_TYPE2_EXT) | |||
| 946 | continue; | |||
| 947 | break; | |||
| 948 | case RIB_EXT: | |||
| 949 | if (r->p_type != PT_TYPE1_EXT && | |||
| 950 | r->p_type != PT_TYPE2_EXT) | |||
| 951 | continue; | |||
| 952 | break; | |||
| 953 | default: | |||
| 954 | fatalx("rt_dump: invalid RIB type"); | |||
| 955 | } | |||
| 956 | ||||
| 957 | memset(&rtctl, 0, sizeof(rtctl)); | |||
| 958 | rtctl.prefix = r->prefix; | |||
| 959 | rtctl.area.s_addr = r->area.s_addr; | |||
| 960 | rtctl.cost = r->cost; | |||
| 961 | rtctl.cost2 = r->cost2; | |||
| 962 | rtctl.p_type = r->p_type; | |||
| 963 | rtctl.d_type = r->d_type; | |||
| 964 | rtctl.flags = r->flags; | |||
| 965 | rtctl.prefixlen = r->prefixlen; | |||
| 966 | ||||
| 967 | TAILQ_FOREACH(rn, &r->nexthop, entry)for((rn) = ((&r->nexthop)->tqh_first); (rn) != ((void *)0); (rn) = ((rn)->entry.tqe_next)) { | |||
| 968 | if (rn->invalid) | |||
| 969 | continue; | |||
| 970 | ||||
| 971 | rtctl.connected = rn->connected; | |||
| 972 | rtctl.nexthop = rn->nexthop; | |||
| 973 | rtctl.ifindex = rn->ifindex; | |||
| 974 | rtctl.adv_rtr.s_addr = rn->adv_rtr.s_addr; | |||
| 975 | rtctl.uptime = now.tv_sec - rn->uptime; | |||
| 976 | ||||
| 977 | rde_imsg_compose_ospfe(IMSG_CTL_SHOW_RIB, 0, pid, | |||
| 978 | &rtctl, sizeof(rtctl)); | |||
| 979 | } | |||
| 980 | } | |||
| 981 | } | |||
| 982 | ||||
| 983 | void | |||
| 984 | rt_update(struct in6_addr *prefix, u_int8_t prefixlen, struct v_nexthead *vnh, | |||
| 985 | u_int16_t v_type, u_int32_t cost, u_int32_t cost2, struct in_addr area, | |||
| 986 | struct in_addr adv_rtr, enum path_type p_type, enum dst_type d_type, | |||
| 987 | u_int8_t flags, u_int32_t tag) | |||
| 988 | { | |||
| 989 | struct rt_node *rte; | |||
| 990 | struct rt_nexthop *rn; | |||
| 991 | int better = 0, equal = 0; | |||
| 992 | ||||
| 993 | if (vnh == NULL((void*)0) || TAILQ_EMPTY(vnh)(((vnh)->tqh_first) == ((void*)0))) /* XXX remove */ | |||
| 994 | fatalx("rt_update: invalid nexthop"); | |||
| 995 | ||||
| 996 | if ((rte = rt_find(prefix, prefixlen, d_type)) == NULL((void*)0)) { | |||
| 997 | if ((rte = calloc(1, sizeof(struct rt_node))) == NULL((void*)0)) | |||
| 998 | fatal("rt_update"); | |||
| 999 | ||||
| 1000 | TAILQ_INIT(&rte->nexthop)do { (&rte->nexthop)->tqh_first = ((void*)0); (& rte->nexthop)->tqh_last = &(&rte->nexthop)-> tqh_first; } while (0); | |||
| 1001 | rte->prefix = *prefix; | |||
| 1002 | rte->prefixlen = prefixlen; | |||
| 1003 | rte->cost = cost; | |||
| 1004 | rte->cost2 = cost2; | |||
| 1005 | rte->area = area; | |||
| 1006 | rte->p_type = p_type; | |||
| 1007 | rte->d_type = d_type; | |||
| 1008 | rte->flags = flags; | |||
| 1009 | rte->ext_tag = tag; | |||
| 1010 | ||||
| 1011 | rt_nexthop_add(rte, vnh, v_type, adv_rtr); | |||
| 1012 | ||||
| 1013 | rt_insert(rte); | |||
| 1014 | } else { | |||
| 1015 | /* order: | |||
| 1016 | * 1. intra-area | |||
| 1017 | * 2. inter-area | |||
| 1018 | * 3. type 1 as ext | |||
| 1019 | * 4. type 2 as ext | |||
| 1020 | */ | |||
| 1021 | if (rte->invalid) /* everything is better than invalid */ | |||
| 1022 | better = 1; | |||
| 1023 | else if (p_type < rte->p_type) | |||
| 1024 | better = 1; | |||
| 1025 | else if (p_type == rte->p_type) | |||
| 1026 | switch (p_type) { | |||
| 1027 | case PT_INTRA_AREA: | |||
| 1028 | case PT_INTER_AREA: | |||
| 1029 | if (cost < rte->cost) | |||
| 1030 | better = 1; | |||
| 1031 | else if (cost == rte->cost && | |||
| 1032 | rte->area.s_addr == area.s_addr) | |||
| 1033 | equal = 1; | |||
| 1034 | break; | |||
| 1035 | case PT_TYPE1_EXT: | |||
| 1036 | if (cost < rte->cost) | |||
| 1037 | better = 1; | |||
| 1038 | else if (cost == rte->cost) | |||
| 1039 | equal = 1; | |||
| 1040 | break; | |||
| 1041 | case PT_TYPE2_EXT: | |||
| 1042 | if (cost2 < rte->cost2) | |||
| 1043 | better = 1; | |||
| 1044 | else if (cost2 == rte->cost2 && | |||
| 1045 | cost < rte->cost) | |||
| 1046 | better = 1; | |||
| 1047 | else if (cost2 == rte->cost2 && | |||
| 1048 | cost == rte->cost) | |||
| 1049 | equal = 1; | |||
| 1050 | break; | |||
| 1051 | } | |||
| 1052 | ||||
| 1053 | if (better) { | |||
| 1054 | TAILQ_FOREACH(rn, &rte->nexthop, entry)for((rn) = ((&rte->nexthop)->tqh_first); (rn) != (( void*)0); (rn) = ((rn)->entry.tqe_next)) | |||
| 1055 | rn->invalid = 1; | |||
| 1056 | ||||
| 1057 | rte->area = area; | |||
| 1058 | rte->cost = cost; | |||
| 1059 | rte->cost2 = cost2; | |||
| 1060 | rte->p_type = p_type; | |||
| 1061 | rte->flags = flags; | |||
| 1062 | rte->ext_tag = tag; | |||
| 1063 | } | |||
| 1064 | ||||
| 1065 | if (equal || better) | |||
| 1066 | rt_nexthop_add(rte, vnh, v_type, adv_rtr); | |||
| 1067 | } | |||
| 1068 | } | |||
| 1069 | ||||
| 1070 | struct rt_node * | |||
| 1071 | rt_lookup(enum dst_type type, struct in6_addr *addr) | |||
| 1072 | { | |||
| 1073 | struct rt_node *rn; | |||
| 1074 | struct in6_addr ina; | |||
| 1075 | u_int8_t i = 128; | |||
| 1076 | ||||
| 1077 | if (type == DT_RTR) { | |||
| 1078 | rn = rt_find(addr, 128, type); | |||
| 1079 | if (rn && rn->invalid == 0) | |||
| 1080 | return (rn); | |||
| 1081 | return (NULL((void*)0)); | |||
| 1082 | } | |||
| 1083 | ||||
| 1084 | /* type == DT_NET */ | |||
| 1085 | do { | |||
| 1086 | inet6applymask(&ina, addr, i); | |||
| 1087 | if ((rn = rt_find(&ina, i, type)) && rn->invalid == 0) | |||
| 1088 | return (rn); | |||
| 1089 | } while (i-- != 0); | |||
| 1090 | ||||
| 1091 | return (NULL((void*)0)); | |||
| 1092 | } | |||
| 1093 | ||||
| 1094 | /* router LSA links */ | |||
| 1095 | struct lsa_rtr_link * | |||
| 1096 | get_rtr_link(struct vertex *v, unsigned int idx) | |||
| 1097 | { | |||
| 1098 | struct lsa_rtr_link *rtr_link = NULL((void*)0); | |||
| 1099 | unsigned int frag = 1; | |||
| 1100 | unsigned int frag_nlinks; | |||
| 1101 | unsigned int nlinks = 0; | |||
| 1102 | unsigned int i; | |||
| 1103 | ||||
| 1104 | if (v->type != LSA_TYPE_ROUTER0x2001) | |||
| 1105 | fatalx("get_rtr_link: invalid LSA type"); | |||
| 1106 | ||||
| 1107 | /* Treat multiple Router-LSAs originated by the same router | |||
| 1108 | * as an aggregate. */ | |||
| 1109 | do { | |||
| 1110 | /* number of links validated earlier by lsa_check() */ | |||
| 1111 | rtr_link = (struct lsa_rtr_link *)((char *)v->lsa + | |||
| 1112 | sizeof(v->lsa->hdr) + sizeof(struct lsa_rtr)); | |||
| 1113 | frag_nlinks = ((ntohs(v->lsa->hdr.len)(__uint16_t)(__builtin_constant_p(v->lsa->hdr.len) ? (__uint16_t )(((__uint16_t)(v->lsa->hdr.len) & 0xffU) << 8 | ((__uint16_t)(v->lsa->hdr.len) & 0xff00U) >> 8) : __swap16md(v->lsa->hdr.len)) - | |||
| 1114 | sizeof(struct lsa_hdr) - sizeof(struct lsa_rtr)) / | |||
| 1115 | sizeof(struct lsa_rtr_link)); | |||
| 1116 | if (nlinks + frag_nlinks > idx) { | |||
| 1117 | for (i = 0; i < frag_nlinks; i++) { | |||
| 1118 | if (i + nlinks == idx) | |||
| 1119 | return (rtr_link); | |||
| 1120 | rtr_link++; | |||
| 1121 | } | |||
| 1122 | } | |||
| 1123 | nlinks += frag_nlinks; | |||
| 1124 | v = lsa_find_rtr_frag(v->area, htonl(v->adv_rtr)(__uint32_t)(__builtin_constant_p(v->adv_rtr) ? (__uint32_t )(((__uint32_t)(v->adv_rtr) & 0xff) << 24 | ((__uint32_t )(v->adv_rtr) & 0xff00) << 8 | ((__uint32_t)(v-> adv_rtr) & 0xff0000) >> 8 | ((__uint32_t)(v->adv_rtr ) & 0xff000000) >> 24) : __swap32md(v->adv_rtr)), frag++); | |||
| 1125 | } while (v); | |||
| 1126 | ||||
| 1127 | fatalx("get_rtr_link: index not found"); | |||
| 1128 | } | |||
| 1129 | ||||
| 1130 | /* network LSA links */ | |||
| 1131 | struct lsa_net_link * | |||
| 1132 | get_net_link(struct vertex *v, unsigned int idx) | |||
| 1133 | { | |||
| 1134 | struct lsa_net_link *net_link = NULL((void*)0); | |||
| 1135 | char *buf = (char *)v->lsa; | |||
| 1136 | unsigned int i, nlinks; | |||
| 1137 | ||||
| 1138 | if (v->type != LSA_TYPE_NETWORK0x2002) | |||
| 1139 | fatalx("get_net_link: invalid LSA type"); | |||
| 1140 | ||||
| 1141 | net_link = (struct lsa_net_link *)(buf + sizeof(v->lsa->hdr) + | |||
| 1142 | sizeof(struct lsa_net)); | |||
| 1143 | ||||
| 1144 | /* number of links validated earlier by lsa_check() */ | |||
| 1145 | nlinks = lsa_num_links(v); | |||
| 1146 | for (i = 0; i < nlinks; i++) { | |||
| 1147 | if (i == idx) | |||
| 1148 | return (net_link); | |||
| 1149 | net_link++; | |||
| 1150 | } | |||
| 1151 | ||||
| 1152 | fatalx("get_net_link: index not found"); | |||
| 1153 | } | |||
| 1154 | ||||
| 1155 | /* misc */ | |||
| 1156 | int | |||
| 1157 | linked(struct vertex *w, struct vertex *v) | |||
| 1158 | { | |||
| 1159 | struct lsa_rtr_link *rtr_link = NULL((void*)0); | |||
| 1160 | struct lsa_net_link *net_link = NULL((void*)0); | |||
| 1161 | unsigned int i; | |||
| 1162 | ||||
| 1163 | switch (w->type) { | |||
| 1164 | case LSA_TYPE_ROUTER0x2001: | |||
| 1165 | for (i = 0; i < lsa_num_links(w); i++) { | |||
| 1166 | rtr_link = get_rtr_link(w, i); | |||
| 1167 | switch (v->type) { | |||
| 1168 | case LSA_TYPE_ROUTER0x2001: | |||
| 1169 | if (rtr_link->type == LINK_TYPE_POINTTOPOINT1 && | |||
| 1170 | rtr_link->nbr_rtr_id == htonl(v->adv_rtr)(__uint32_t)(__builtin_constant_p(v->adv_rtr) ? (__uint32_t )(((__uint32_t)(v->adv_rtr) & 0xff) << 24 | ((__uint32_t )(v->adv_rtr) & 0xff00) << 8 | ((__uint32_t)(v-> adv_rtr) & 0xff0000) >> 8 | ((__uint32_t)(v->adv_rtr ) & 0xff000000) >> 24) : __swap32md(v->adv_rtr))) | |||
| 1171 | return (1); | |||
| 1172 | break; | |||
| 1173 | case LSA_TYPE_NETWORK0x2002: | |||
| 1174 | if (rtr_link->type == LINK_TYPE_TRANSIT_NET2 && | |||
| 1175 | rtr_link->nbr_rtr_id == htonl(v->adv_rtr)(__uint32_t)(__builtin_constant_p(v->adv_rtr) ? (__uint32_t )(((__uint32_t)(v->adv_rtr) & 0xff) << 24 | ((__uint32_t )(v->adv_rtr) & 0xff00) << 8 | ((__uint32_t)(v-> adv_rtr) & 0xff0000) >> 8 | ((__uint32_t)(v->adv_rtr ) & 0xff000000) >> 24) : __swap32md(v->adv_rtr)) && | |||
| 1176 | rtr_link->nbr_iface_id == htonl(v->ls_id)(__uint32_t)(__builtin_constant_p(v->ls_id) ? (__uint32_t) (((__uint32_t)(v->ls_id) & 0xff) << 24 | ((__uint32_t )(v->ls_id) & 0xff00) << 8 | ((__uint32_t)(v-> ls_id) & 0xff0000) >> 8 | ((__uint32_t)(v->ls_id ) & 0xff000000) >> 24) : __swap32md(v->ls_id))) | |||
| 1177 | return (1); | |||
| 1178 | break; | |||
| 1179 | default: | |||
| 1180 | fatalx("linked: invalid type"); | |||
| 1181 | } | |||
| 1182 | } | |||
| 1183 | return (0); | |||
| 1184 | case LSA_TYPE_NETWORK0x2002: | |||
| 1185 | for (i = 0; i < lsa_num_links(w); i++) { | |||
| 1186 | net_link = get_net_link(w, i); | |||
| 1187 | switch (v->type) { | |||
| 1188 | case LSA_TYPE_ROUTER0x2001: | |||
| 1189 | if (net_link->att_rtr == htonl(v->adv_rtr)(__uint32_t)(__builtin_constant_p(v->adv_rtr) ? (__uint32_t )(((__uint32_t)(v->adv_rtr) & 0xff) << 24 | ((__uint32_t )(v->adv_rtr) & 0xff00) << 8 | ((__uint32_t)(v-> adv_rtr) & 0xff0000) >> 8 | ((__uint32_t)(v->adv_rtr ) & 0xff000000) >> 24) : __swap32md(v->adv_rtr))) | |||
| 1190 | return (1); | |||
| 1191 | break; | |||
| 1192 | default: | |||
| 1193 | fatalx("linked: invalid type"); | |||
| 1194 | } | |||
| 1195 | } | |||
| 1196 | return (0); | |||
| 1197 | default: | |||
| 1198 | fatalx("linked: invalid LSA type"); | |||
| 1199 | } | |||
| 1200 | ||||
| 1201 | return (0); | |||
| 1202 | } |