diff options
Diffstat (limited to 'nest/iface.c')
-rw-r--r-- | nest/iface.c | 173 |
1 files changed, 2 insertions, 171 deletions
diff --git a/nest/iface.c b/nest/iface.c index 9b4eff00..4fa2c72e 100644 --- a/nest/iface.c +++ b/nest/iface.c @@ -1,7 +1,7 @@ /* * BIRD -- Management of Interfaces and Neighbor Cache * - * (c) 1998--1999 Martin Mares <mj@ucw.cz> + * (c) 1998--2000 Martin Mares <mj@ucw.cz> * * Can be freely distributed and used under the terms of the GNU GPL. */ @@ -20,174 +20,6 @@ static pool *if_pool; static void auto_router_id(void); -/* - * Neighbor Cache - * - * FIXME: Use hashing to get some real speed. - */ - -static slab *neigh_slab; -static list neigh_list; - -static int -if_connected(ip_addr *a, struct iface *i) /* -1=error, 1=match, 0=no match */ -{ - struct ifa *b; - - if (!(i->flags & IF_UP)) - return 0; - WALK_LIST(b, i->addrs) - { - if (ipa_equal(*a, b->ip)) - return -1; - if (b->flags & IA_UNNUMBERED) - { - if (ipa_equal(*a, b->opposite)) - return 1; - } - else - { - if (ipa_in_net(*a, b->prefix, b->pxlen)) - { - if (ipa_equal(*a, b->prefix) || /* Network address */ - ipa_equal(*a, b->brd)) /* Broadcast */ - return -1; - return 1; - } - } - } - return 0; -} - -neighbor * -neigh_find(struct proto *p, ip_addr *a, unsigned flags) -{ - neighbor *n; - int class; - struct iface *i, *j; - - WALK_LIST(n, neigh_list) - if (n->proto == p && ipa_equal(*a, n->addr)) - return n; - - class = ipa_classify(*a); - if (class < 0) /* Invalid address */ - return NULL; - if ((class & IADDR_SCOPE_MASK) < SCOPE_SITE || - !(class & IADDR_HOST)) - return NULL; /* Bad scope or a somecast */ - - j = NULL; - WALK_LIST(i, iface_list) - switch (if_connected(a, i)) - { - case -1: - return NULL; - case 1: - if (!j) /* FIXME: Search for _optimal_ iface route? */ - j = i; - /* Fall-thru */ - } - if (!j && !(flags & NEF_STICKY)) - return NULL; - - n = sl_alloc(neigh_slab); - n->addr = *a; - n->iface = j; - add_tail(&neigh_list, &n->n); - if (j) - add_tail(&j->neighbors, &n->if_n); - n->proto = p; - n->data = NULL; - n->aux = 0; - n->flags = flags; - return n; -} - -void -neigh_dump(neighbor *n) -{ - debug("%p %I ", n, n->addr); - if (n->iface) - debug("%s ", n->iface->name); - else - debug("[] "); - debug("%s %p %08x", n->proto->name, n->data, n->aux); - if (n->flags & NEF_STICKY) - debug(" STICKY"); - debug("\n"); -} - -void -neigh_dump_all(void) -{ - neighbor *n; - - debug("Known neighbors:\n"); - WALK_LIST(n, neigh_list) - neigh_dump(n); - debug("\n"); -} - -static void -neigh_if_up(struct iface *i) -{ - neighbor *n; - - WALK_LIST(n, neigh_list) - if (!n->iface && - if_connected(&n->addr, i) > 0) - { - n->iface = i; - add_tail(&i->neighbors, &n->if_n); - DBG("Waking up sticky neighbor %I\n", n->addr); - if (n->proto->neigh_notify && n->proto->core_state != FS_FLUSHING) - n->proto->neigh_notify(n); - } -} - -static void -neigh_if_down(struct iface *i) -{ - node *x, *y; - - WALK_LIST_DELSAFE(x, y, i->neighbors) - { - neighbor *n = SKIP_BACK(neighbor, if_n, x); - DBG("Flushing neighbor %I on %s\n", n->addr, i->name); - rem_node(&n->if_n); - n->iface = NULL; - if (n->proto->neigh_notify && n->proto->core_state != FS_FLUSHING) - n->proto->neigh_notify(n); - if (!(n->flags & NEF_STICKY)) - { - rem_node(&n->n); - sl_free(neigh_slab, n); - } - } -} - -void -neigh_prune(void) -{ - neighbor *n; - node *m; - - DBG("Pruning neighbors\n"); - WALK_LIST_DELSAFE(n, m, neigh_list) - if (n->proto->core_state == FS_FLUSHING) - { - rem_node(&n->n); - if (n->iface) - rem_node(&n->if_n); - sl_free(neigh_slab, n); - } -} - -/* - * The Interface List - */ - list iface_list; void @@ -577,8 +409,7 @@ if_init(void) { if_pool = rp_new(&root_pool, "Interfaces"); init_list(&iface_list); - neigh_slab = sl_new(if_pool, sizeof(neighbor)); - init_list(&neigh_list); + neigh_init(if_pool); } /* |