bird/nest/rt-dev.c
Martin Mares 9a158361da I rewrote the interface handling code, so that it supports multiple
addresses per interface (needed for example for IPv6 support).

Visible changes:

o  struct iface now contains a list of all interface addresses (represented
   by struct ifa), iface->addr points to the primary address (if any).
o  Interface has IF_UP set iff it's up and it has a primary address.
o  IF_UP is now independent on IF_IGNORED (i.e., you need to test IF_IGNORED
   in the protocols; I've added this, but please check).
o  The if_notify_change hook has been simplified (only one interface pointer
   etc.).
o  Introduced a ifa_notify_change hook. (For now, only the Direct protocol
   does use it -- it's wise to just listen to device routes in all other
   protocols.)
o  Removed IF_CHANGE_FLAGS notifier flag (it was meaningless anyway).
o  Updated all the code except netlink (I'll look at it tomorrow) to match
   the new semantics (please look at your code to ensure I did it right).

Things to fix:

o  Netlink.
o  Make krt-iface interpret "eth0:1"-type aliases as secondary addresses.
1999-05-06 21:38:11 +00:00

81 lines
1.7 KiB
C

/*
* BIRD -- Direct Device Routes
*
* (c) 1998--1999 Martin Mares <mj@ucw.cz>
*
* Can be freely distributed and used under the terms of the GNU GPL.
*/
#define LOCAL_DEBUG
#include <string.h>
#include "nest/bird.h"
#include "nest/iface.h"
#include "nest/protocol.h"
#include "nest/route.h"
#include "nest/rt-dev.h"
#include "conf/conf.h"
#include "lib/resource.h"
static void
dev_ifa_notify(struct proto *p, unsigned c, struct ifa *ad)
{
struct rt_dev_config *P = (void *) p->cf;
if (!iface_patt_match(&P->iface_list, ad->iface))
return;
if (c & IF_CHANGE_DOWN)
{
net *n;
DBG("dev_if_notify: %s:%I going down\n", ad->iface->name, ad->ip);
n = net_find(p->table, ad->prefix, ad->pxlen);
if (!n)
{
debug("dev_if_notify: device shutdown: prefix not found\n");
return;
}
rte_update(n, p, NULL);
}
else if (c & IF_CHANGE_UP)
{
rta *a, A;
net *n;
rte *e;
debug("dev_if_notify: %s:%I going up\n", ad->iface->name, ad->ip);
bzero(&A, sizeof(A));
A.proto = p;
A.source = RTS_DEVICE;
A.scope = ad->scope;
A.cast = RTC_UNICAST;
A.dest = RTD_DEVICE;
A.iface = ad->iface;
A.attrs = NULL;
a = rta_lookup(&A);
if (ad->flags & IF_UNNUMBERED)
n = net_get(p->table, ad->opposite, ad->pxlen);
else
n = net_get(p->table, ad->prefix, ad->pxlen);
e = rte_get_temp(a);
e->net = n;
e->pflags = 0;
rte_update(n, p, e);
}
}
static struct proto *
dev_init(struct proto_config *c)
{
struct proto *p = proto_new(c, sizeof(struct proto));
p->ifa_notify = dev_ifa_notify;
return p;
}
struct protocol proto_device = {
name: "Direct",
priority: 90,
init: dev_init,
};