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Learn static device routes from the kernel (temporary until we can make

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such things configurable).
This commit is contained in:
Martin Mares 1998-10-20 16:39:04 +00:00
parent feb6abe009
commit 756b86dea3
1 changed files with 41 additions and 5 deletions
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46
sysdep/linux/krt-scan.c
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@ -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();
}