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authorMartin Mares <mj@ucw.cz>2000-01-17 13:38:50 +0100
committerMartin Mares <mj@ucw.cz>2000-01-17 13:38:50 +0100
commit295ae16d4ddf4b714e716a0a1537f40c54f1119c (patch)
tree2a7abe725ca35acab9c3810796f9fc7e38db563a
parent471cc0be651a8db7068a65963ecfd4cc45f97ab1 (diff)
downloadbird-295ae16d4ddf4b714e716a0a1537f40c54f1119c.tar
bird-295ae16d4ddf4b714e716a0a1537f40c54f1119c.zip
Static protocol supports full dynamic reconfiguration.
-rw-r--r--proto/static/static.c111
1 files changed, 88 insertions, 23 deletions
diff --git a/proto/static/static.c b/proto/static/static.c
index c006daf..afd3a10 100644
--- a/proto/static/static.c
+++ b/proto/static/static.c
@@ -27,6 +27,9 @@ static_install(struct proto *p, struct static_route *r, struct iface *ifa)
rta a, *aa;
rte *e;
+ if (r->installed)
+ return;
+
DBG("Installing static route %I/%d, rtd=%d\n", r->net, r->masklen, r->dest);
bzero(&a, sizeof(a));
a.proto = p;
@@ -51,6 +54,9 @@ static_remove(struct proto *p, struct static_route *r)
{
net *n;
+ if (!r->installed)
+ return;
+
DBG("Removing static route %I/%d\n", r->net, r->masklen);
n = net_find(p->table, r->net, r->masklen);
if (n)
@@ -58,6 +64,33 @@ static_remove(struct proto *p, struct static_route *r)
r->installed = 0;
}
+static void
+static_add(struct proto *p, struct static_route *r)
+{
+ switch (r->dest)
+ {
+ case RTD_ROUTER:
+ {
+ struct neighbor *n = neigh_find(p, &r->via, NEF_STICKY);
+ if (n)
+ {
+ r->chain = n->data;
+ n->data = r;
+ r->neigh = n;
+ if (n->iface)
+ static_install(p, r, n->iface);
+ }
+ else
+ log(L_ERR "Static route destination %I is invalid. Ignoring.\n", r->via);
+ break;
+ }
+ case RTD_DEVICE:
+ break;
+ default:
+ static_install(p, r, NULL);
+ }
+}
+
static int
static_start(struct proto *p)
{
@@ -66,28 +99,7 @@ static_start(struct proto *p)
DBG("Static: take off!\n");
WALK_LIST(r, c->other_routes)
- switch (r->dest)
- {
- case RTD_ROUTER:
- {
- struct neighbor *n = neigh_find(p, &r->via, NEF_STICKY);
- if (n)
- {
- r->chain = n->data;
- n->data = r;
- r->neigh = n;
- if (n->iface)
- static_install(p, r, n->iface);
- }
- else
- log(L_ERR "Static route destination %I is invalid. Ignoring.\n", r->via);
- break;
- }
- case RTD_DEVICE:
- break;
- default:
- static_install(p, r, NULL);
- }
+ static_add(p, r);
return PS_UP;
}
@@ -176,9 +188,62 @@ static_init(struct proto_config *c)
}
static int
+static_same_route(struct static_route *x, struct static_route *y)
+{
+ return ipa_equal(x->net, y->net)
+ && x->masklen == y->masklen
+ && x->dest == y->dest
+ && (x->dest != RTD_ROUTER || ipa_equal(x->via, y->via))
+ && (x->dest != RTD_DEVICE || !strcmp(x->if_name, y->if_name))
+ ;
+}
+
+static void
+static_match(struct proto *p, struct static_route *r, struct static_config *n)
+{
+ struct static_route *t;
+
+ if (r->neigh)
+ r->neigh->data = NULL;
+ WALK_LIST(t, n->iface_routes)
+ if (static_same_route(r, t))
+ {
+ t->installed = 1;
+ return;
+ }
+ WALK_LIST(t, n->other_routes)
+ if (static_same_route(r, t))
+ {
+ t->installed = 1;
+ return;
+ }
+ static_remove(p, r);
+}
+
+static int
static_reconfigure(struct proto *p, struct proto_config *new)
{
- return 0;
+ struct static_config *o = (void *) p->cf;
+ struct static_config *n = (void *) new;
+ struct static_route *r;
+
+ /* Delete all obsolete routes and reset neighbor entries */
+ WALK_LIST(r, o->iface_routes)
+ static_match(p, r, n);
+ WALK_LIST(r, o->other_routes)
+ static_match(p, r, n);
+
+ /* Now add all new routes, those not changed will be ignored by static_install() */
+ WALK_LIST(r, n->iface_routes)
+ {
+ struct iface *ifa;
+ if (ifa = if_find_by_name(r->if_name))
+ static_install(p, r, ifa);
+ }
+ WALK_LIST(r, n->other_routes)
+ static_add(p, r);
+
+ return 1;
}
struct protocol proto_static = {