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authorMartin Mares <mj@ucw.cz>1999-12-08 15:16:13 +0100
committerMartin Mares <mj@ucw.cz>1999-12-08 15:16:13 +0100
commit0da472d7e867e31c49fccc4ee45df3ef47c29c9b (patch)
treec78cc2aa5acb075038e0c23eecc95d035260dda5
parentdff1f5791794102e4e6880516545145c5036873f (diff)
downloadbird-0da472d7e867e31c49fccc4ee45df3ef47c29c9b.tar
bird-0da472d7e867e31c49fccc4ee45df3ef47c29c9b.zip
Except for special protocols (nowadays only the kernel syncer), don't
export host and link scope routes.
-rw-r--r--nest/proto.c1
-rw-r--r--nest/protocol.h1
-rw-r--r--nest/rt-table.c25
-rw-r--r--sysdep/unix/krt.c1
4 files changed, 15 insertions, 13 deletions
diff --git a/nest/proto.c b/nest/proto.c
index ab7de0f..a58c3f7 100644
--- a/nest/proto.c
+++ b/nest/proto.c
@@ -91,6 +91,7 @@ proto_new(struct proto_config *c, unsigned size)
p->table = c->table->table;
p->in_filter = c->in_filter;
p->out_filter = c->out_filter;
+ p->min_scope = SCOPE_SITE;
c->proto = p;
return p;
}
diff --git a/nest/protocol.h b/nest/protocol.h
index 3e53c86..39d1cf5 100644
--- a/nest/protocol.h
+++ b/nest/protocol.h
@@ -98,6 +98,7 @@ struct proto {
char *name; /* Name of this instance (== cf->name) */
unsigned debug; /* Debugging flags */
unsigned preference; /* Default route preference */
+ int min_scope; /* Minimal route scope accepted */
unsigned disabled; /* Manually disabled */
unsigned proto_state; /* Protocol state machine (see below) */
unsigned core_state; /* Core state machine (see below) */
diff --git a/nest/rt-table.c b/nest/rt-table.c
index edbf154..dc13ea7 100644
--- a/nest/rt-table.c
+++ b/nest/rt-table.c
@@ -102,7 +102,7 @@ rte_better(rte *new, rte *old)
}
static inline void
-do_rte_announce(struct announce_hook *a, net *net, rte *new, rte *old, ea_list *tmpa)
+do_rte_announce(struct announce_hook *a, net *net, rte *new, rte *old, ea_list *tmpa, int class)
{
struct proto *p = a->proto;
rte *new0 = new;
@@ -110,8 +110,9 @@ do_rte_announce(struct announce_hook *a, net *net, rte *new, rte *old, ea_list *
if (new)
{
- int ok = p->import_control ? p->import_control(p, &new, &tmpa, rte_update_pool) : 0;
- if (ok < 0 ||
+ int ok;
+ if ((class & IADDR_SCOPE_MASK) < p->min_scope ||
+ (ok = p->import_control ? p->import_control(p, &new, &tmpa, rte_update_pool) : 0) < 0 ||
(!ok && (p->out_filter == FILTER_REJECT ||
p->out_filter && f_run(p->out_filter, &new, &tmpa, rte_update_pool) > F_MODIFY)
)
@@ -142,11 +143,12 @@ static void
rte_announce(rtable *tab, net *net, rte *new, rte *old, ea_list *tmpa)
{
struct announce_hook *a;
+ int class = ipa_classify(net->n.prefix);
WALK_LIST(a, tab->hooks)
{
ASSERT(a->proto->core_state == FS_HAPPY || a->proto->core_state == FS_FEEDING);
- do_rte_announce(a, net, new, old, tmpa);
+ do_rte_announce(a, net, new, old, tmpa, class);
}
}
@@ -169,7 +171,7 @@ rt_feed_baby(struct proto *p)
{
struct proto *q = e->attrs->proto;
ea_list *tmpa = q->make_tmp_attrs ? q->make_tmp_attrs(e, rte_update_pool) : NULL;
- do_rte_announce(h, n, e, NULL, tmpa);
+ do_rte_announce(h, n, e, NULL, tmpa, ipa_classify(n->n.prefix));
lp_flush(rte_update_pool);
}
}
@@ -195,15 +197,12 @@ rte_validate(rte *e)
n->n.prefix, n->n.pxlen, e->attrs->from, e->attrs->proto->name);
return 0;
}
- if ((c & IADDR_SCOPE_MASK) == SCOPE_HOST)
+ if ((c & IADDR_SCOPE_MASK) < e->attrs->proto->min_scope)
{
- int s = e->attrs->source;
- if (s != RTS_STATIC && s != RTS_DEVICE && s != RTS_STATIC_DEVICE)
- {
- log(L_WARN "Ignoring host scope route %I/%d received from %I via %s",
- n->n.prefix, n->n.pxlen, e->attrs->from, e->attrs->proto->name);
- return 0;
- }
+ log(L_WARN "Ignoring %s scope route %I/%d received from %I via %s",
+ ip_scope_text(c & IADDR_SCOPE_MASK),
+ n->n.prefix, n->n.pxlen, e->attrs->from, e->attrs->proto->name);
+ return 0;
}
}
return 1;
diff --git a/sysdep/unix/krt.c b/sysdep/unix/krt.c
index 090c50b..aa9a9c4 100644
--- a/sysdep/unix/krt.c
+++ b/sysdep/unix/krt.c
@@ -753,6 +753,7 @@ krt_init(struct proto_config *c)
struct krt_proto *p = proto_new(c, sizeof(struct krt_proto));
p->p.rt_notify = krt_notify;
+ p->p.min_scope = SCOPE_HOST;
return &p->p;
}