summaryrefslogtreecommitdiffstats
path: root/nest
diff options
context:
space:
mode:
Diffstat (limited to 'nest')
-rw-r--r--nest/iface.h1
-rw-r--r--nest/neighbor.c23
-rw-r--r--nest/proto.c1
-rw-r--r--nest/protocol.h1
-rw-r--r--nest/rt-dev.c7
-rw-r--r--nest/rt-table.c52
6 files changed, 35 insertions, 50 deletions
diff --git a/nest/iface.h b/nest/iface.h
index a982c17..02129ac 100644
--- a/nest/iface.h
+++ b/nest/iface.h
@@ -97,6 +97,7 @@ typedef struct neighbor {
} neighbor;
#define NEF_STICKY 1
+#define NEF_ONLINK 2
neighbor *neigh_find(struct proto *, ip_addr *, unsigned flags);
neighbor *neigh_find2(struct proto *p, ip_addr *a, struct iface *ifa, unsigned flags);
diff --git a/nest/neighbor.c b/nest/neighbor.c
index a44667f..25b98db 100644
--- a/nest/neighbor.c
+++ b/nest/neighbor.c
@@ -112,12 +112,12 @@ neighbor *
neigh_find2(struct proto *p, ip_addr *a, struct iface *ifa, unsigned flags)
{
neighbor *n;
- int class, scope = SCOPE_HOST;
+ int class, scope = -1; ;
unsigned int h = neigh_hash(p, a);
struct iface *i;
WALK_LIST(n, neigh_hash_table[h]) /* Search the cache */
- if (n->proto == p && ipa_equal(*a, n->addr))
+ if (n->proto == p && ipa_equal(*a, n->addr) && (!ifa || (ifa == n->iface)))
return n;
class = ipa_classify(*a);
@@ -129,7 +129,12 @@ neigh_find2(struct proto *p, ip_addr *a, struct iface *ifa, unsigned flags)
return NULL; /* Bad scope or a somecast */
if (ifa)
- scope = if_connected(a, ifa);
+ {
+ scope = if_connected(a, ifa);
+
+ if ((scope < 0) && (flags & NEF_ONLINK))
+ scope = class & IADDR_SCOPE_MASK;
+ }
else
WALK_LIST(i, iface_list)
if ((scope = if_connected(a, i)) >= 0)
@@ -138,22 +143,28 @@ neigh_find2(struct proto *p, ip_addr *a, struct iface *ifa, unsigned flags)
break;
}
- if (!ifa && !(flags & NEF_STICKY))
+ /* scope < 0 means i don't know neighbor */
+ /* scope >= 0 implies ifa != NULL */
+
+ if ((scope < 0) && !(flags & NEF_STICKY))
return NULL;
n = sl_alloc(neigh_slab);
n->addr = *a;
- n->iface = ifa;
- if (ifa)
+ if (scope >= 0)
{
add_tail(&neigh_hash_table[h], &n->n);
add_tail(&ifa->neighbors, &n->if_n);
}
else
{
+ /* sticky flag does not work for link-local neighbors;
+ fortunately, we don't use this combination */
add_tail(&sticky_neigh_list, &n->n);
+ ifa = NULL;
scope = 0;
}
+ n->iface = ifa;
n->proto = p;
n->data = NULL;
n->aux = 0;
diff --git a/nest/proto.c b/nest/proto.c
index 4883705..db6bf9b 100644
--- a/nest/proto.c
+++ b/nest/proto.c
@@ -113,7 +113,6 @@ 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;
p->hash_key = random_u32();
c->proto = p;
return p;
diff --git a/nest/protocol.h b/nest/protocol.h
index 99356a3..d94873e 100644
--- a/nest/protocol.h
+++ b/nest/protocol.h
@@ -130,7 +130,6 @@ struct proto {
u32 debug; /* Debugging flags */
u32 mrtdump; /* MRTDump flags */
unsigned preference; /* Default route preference */
- int min_scope; /* Minimal route scope accepted */
unsigned accept_ra_types; /* Which types of route announcements are accepted (RA_OPTIMAL or RA_ANY) */
unsigned disabled; /* Manually disabled */
unsigned proto_state; /* Protocol state machine (see below) */
diff --git a/nest/rt-dev.c b/nest/rt-dev.c
index b86015d..bb8eb8e 100644
--- a/nest/rt-dev.c
+++ b/nest/rt-dev.c
@@ -33,6 +33,10 @@ dev_ifa_notify(struct proto *p, unsigned c, struct ifa *ad)
!iface_patt_find(&P->iface_list, ad->iface))
/* Empty list is automagically treated as "*" */
return;
+
+ if (ad->scope <= SCOPE_LINK)
+ return;
+
if (c & IF_CHANGE_DOWN)
{
net *n;
@@ -56,7 +60,7 @@ dev_ifa_notify(struct proto *p, unsigned c, struct ifa *ad)
bzero(&A, sizeof(A));
A.proto = p;
A.source = RTS_DEVICE;
- A.scope = ad->scope;
+ A.scope = SCOPE_UNIVERSE;
A.cast = RTC_UNICAST;
A.dest = RTD_DEVICE;
A.iface = ad->iface;
@@ -76,7 +80,6 @@ dev_init(struct proto_config *c)
struct proto *p = proto_new(c, sizeof(struct proto));
p->ifa_notify = dev_ifa_notify;
- p->min_scope = SCOPE_HOST;
return p;
}
diff --git a/nest/rt-table.c b/nest/rt-table.c
index 41ecf64..1860b1a 100644
--- a/nest/rt-table.c
+++ b/nest/rt-table.c
@@ -158,7 +158,7 @@ rte_trace_out(unsigned int flag, struct proto *p, rte *e, char *msg)
}
static inline void
-do_rte_announce(struct announce_hook *a, int type UNUSED, net *net, rte *new, rte *old, ea_list *tmpa, int class, int refeed)
+do_rte_announce(struct announce_hook *a, int type UNUSED, net *net, rte *new, rte *old, ea_list *tmpa, int refeed)
{
struct proto *p = a->proto;
struct filter *filter = p->out_filter;
@@ -183,13 +183,7 @@ do_rte_announce(struct announce_hook *a, int type UNUSED, net *net, rte *new, rt
stats->exp_updates_received++;
char *drop_reason = NULL;
- if ((class & IADDR_SCOPE_MASK) < p->min_scope)
- {
- stats->exp_updates_rejected++;
- drop_reason = "out of scope";
- fast_exit_hack = 1;
- }
- else if ((ok = p->import_control ? p->import_control(p, &new, &tmpa, rte_update_pool) : 0) < 0)
+ if ((ok = p->import_control ? p->import_control(p, &new, &tmpa, rte_update_pool) : 0) < 0)
{
stats->exp_updates_rejected++;
drop_reason = "rejected by protocol";
@@ -332,7 +326,6 @@ static void
rte_announce(rtable *tab, unsigned type, net *net, rte *new, rte *old, ea_list *tmpa)
{
struct announce_hook *a;
- int class = ipa_classify(net->n.prefix);
if (type == RA_OPTIMAL)
{
@@ -346,7 +339,7 @@ rte_announce(rtable *tab, unsigned type, net *net, rte *new, rte *old, ea_list *
{
ASSERT(a->proto->core_state == FS_HAPPY || a->proto->core_state == FS_FEEDING);
if (a->proto->accept_ra_types == type)
- do_rte_announce(a, type, net, new, old, tmpa, class, 0);
+ do_rte_announce(a, type, net, new, old, tmpa, 0);
}
}
@@ -362,33 +355,15 @@ rte_validate(rte *e)
n->n.prefix, n->n.pxlen, e->sender->name);
return 0;
}
- if (n->n.pxlen)
+
+ c = ipa_classify_net(n->n.prefix);
+ if ((c < 0) || !(c & IADDR_HOST) || ((c & IADDR_SCOPE_MASK) <= SCOPE_LINK))
{
- c = ipa_classify(n->n.prefix);
- if (c < 0 || !(c & IADDR_HOST))
- {
- if (!ipa_nonzero(n->n.prefix))
- {
- /* Various default routes */
-#ifdef IPV6
- if (n->n.pxlen == 96)
-#else
- if (n->n.pxlen <= 1)
-#endif
- return 1;
- }
- log(L_WARN "Ignoring bogus route %I/%d received via %s",
- n->n.prefix, n->n.pxlen, e->sender->name);
- return 0;
- }
- if ((c & IADDR_SCOPE_MASK) < e->sender->min_scope)
- {
- 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->sender->name);
- return 0;
- }
+ log(L_WARN "Ignoring bogus route %I/%d received via %s",
+ n->n.prefix, n->n.pxlen, e->sender->name);
+ return 0;
}
+
return 1;
}
@@ -1018,7 +993,7 @@ do_feed_baby(struct proto *p, int type, struct announce_hook *h, net *n, rte *e)
rte_update_lock();
tmpa = q->make_tmp_attrs ? q->make_tmp_attrs(e, rte_update_pool) : NULL;
- do_rte_announce(h, type, n, e, p->refeeding ? e : NULL, tmpa, ipa_classify(n->n.prefix), p->refeeding);
+ do_rte_announce(h, type, n, e, p->refeeding ? e : NULL, tmpa, p->refeeding);
rte_update_unlock();
}
@@ -1190,11 +1165,8 @@ rt_show_net(struct cli *c, net *n, struct rt_show_data *d)
if (p2 && p2 != p0) ok = 0;
if (ok && d->export_mode)
{
- int class = ipa_classify(n->n.prefix);
int ic;
- if ((class & IADDR_SCOPE_MASK) < p1->min_scope)
- ok = 0;
- else if ((ic = p1->import_control ? p1->import_control(p1, &e, &tmpa, rte_update_pool) : 0) < 0)
+ if ((ic = p1->import_control ? p1->import_control(p1, &e, &tmpa, rte_update_pool) : 0) < 0)
ok = 0;
else if (!ic && d->export_mode > 1)
{
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-22 18:35:54 +0100