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-rw-r--r--sysdep/linux/krt-scan.c46
1 files changed, 41 insertions, 5 deletions
diff --git a/sysdep/linux/krt-scan.c b/sysdep/linux/krt-scan.c
index 1b00636..6fdb3bf 100644
--- a/sysdep/linux/krt-scan.c
+++ b/sysdep/linux/krt-scan.c
@@ -29,7 +29,37 @@ static int krt_scan_fd = -1;
/* FIXME: Filtering */
static void
-krt_parse_entry(byte *e)
+krt_magic_route(struct krt_proto *p, net *net, ip_addr gw)
+{
+ neighbor *ng;
+ rta a, *t;
+ rte *e;
+
+ ng = neigh_find(&p->p, &gw, 0);
+ if (!ng)
+ {
+ log(L_ERR "Kernel told us to use non-neighbor %I for %I/%d\n", gw, net->n.prefix, net->n.pxlen);
+ return;
+ }
+ a.proto = &p->p;
+ a.source = RTS_INHERIT;
+ a.scope = SCOPE_UNIVERSE;
+ a.cast = RTC_UNICAST;
+ a.dest = RTD_ROUTER;
+ a.tos = 0;
+ a.flags = 0;
+ a.gw = gw;
+ a.from = IPA_NONE;
+ a.iface = ng->iface;
+ a.attrs = NULL;
+ t = rta_lookup(&a);
+ e = rte_get_temp(t);
+ e->net = net;
+ rte_update(net, &p->p, e);
+}
+
+static void
+krt_parse_entry(byte *e, struct krt_proto *p)
{
u32 dest0, gw0, mask0;
ip_addr dest, gw, mask;
@@ -101,13 +131,17 @@ krt_parse_entry(byte *e)
return;
#endif
DBG("krt_parse_entry: kernel reporting unknown route %I/%d\n", dest, masklen);
- /* FIXME: should be able to learn kernel routes */
+#if 1
+ /* FIXME: should be configurable */
+ if (flags & RTF_GATEWAY)
+ krt_magic_route(p, net, gw);
+#endif
net->n.flags |= KRF_UPDATE;
}
}
static int
-krt_scan_proc(void)
+krt_scan_proc(struct krt_proto *p)
{
byte buf[32768];
int l, seen_hdr;
@@ -136,7 +170,7 @@ krt_scan_proc(void)
while (l >= 128)
{
if (seen_hdr++)
- krt_parse_entry(z);
+ krt_parse_entry(z, p);
z += 128;
l -= 128;
}
@@ -190,7 +224,9 @@ krt_prune(void)
static void
krt_scan_fire(timer *t)
{
- if (krt_scan_proc())
+ struct krt_proto *p = t->data;
+
+ if (krt_scan_proc(p))
krt_prune();
}