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-rw-r--r--nest/iface.c173
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);
}
/*