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/*
* Address linked list routine.
* Copyright (C) 1997, 98 Kunihiro Ishiguro
*
* This file is part of GNU Zebra.
*
* GNU Zebra is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2, or (at your option) any
* later version.
*
* GNU Zebra is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNU Zebra; see the file COPYING. If not, write to the Free
* Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*/
#include <zebra.h>
#include "prefix.h"
#include "linklist.h"
#include "if.h"
#include "table.h"
#include "rib.h"
#include "table.h"
#include "log.h"
#include "zebra/zserv.h"
#include "zebra/redistribute.h"
#include "zebra/interface.h"
/* If same interface address is already exist... */
struct connected *
connected_check_ipv4 (struct interface *ifp, struct prefix *p)
{
struct connected *ifc;
struct listnode *node;
for (node = listhead (ifp->connected); node; node = nextnode (node))
{
ifc = getdata (node);
if (prefix_same (ifc->address, p))
return ifc;
}
return NULL;
}
/* Called from if_up(). */
void
connected_up_ipv4 (struct interface *ifp, struct connected *ifc)
{
struct prefix_ipv4 p;
struct prefix_ipv4 *addr;
struct prefix_ipv4 *dest;
if (! CHECK_FLAG (ifc->conf, ZEBRA_IFC_REAL))
return;
addr = (struct prefix_ipv4 *) ifc->address;
dest = (struct prefix_ipv4 *) ifc->destination;
memset (&p, 0, sizeof (struct prefix_ipv4));
p.family = AF_INET;
p.prefixlen = addr->prefixlen;
/* Point-to-point check. */
if (if_is_pointopoint (ifp) && dest)
p.prefix = dest->prefix;
else
p.prefix = addr->prefix;
/* Apply mask to the network. */
apply_mask_ipv4 (&p);
/* In case of connected address is 0.0.0.0/0 we treat it tunnel
address. */
if (prefix_ipv4_any (&p))
return;
rib_add_ipv4 (ZEBRA_ROUTE_CONNECT, 0, &p, NULL, ifp->ifindex, 0, 0, 0);
rib_update ();
}
/* Add connected IPv4 route to the interface. */
void
connected_add_ipv4 (struct interface *ifp, int flags, struct in_addr *addr,
int prefixlen, struct in_addr *broad, char *label)
{
struct prefix_ipv4 *p;
struct connected *ifc;
struct connected *current;
/* Make connected structure. */
ifc = connected_new ();
ifc->ifp = ifp;
ifc->flags = flags;
/* Allocate new connected address. */
p = prefix_ipv4_new ();
p->family = AF_INET;
p->prefix = *addr;
p->prefixlen = prefixlen;
ifc->address = (struct prefix *) p;
/* If there is broadcast or pointopoint address. */
if (broad)
{
p = prefix_ipv4_new ();
p->family = AF_INET;
p->prefix = *broad;
ifc->destination = (struct prefix *) p;
}
/* Label of this address. */
if (label)
ifc->label = strdup (label);
/* Check same connected route. */
current = connected_check_ipv4 (ifp, (struct prefix *) ifc->address);
if (current)
{
connected_free (ifc);
ifc = current;
}
else
{
listnode_add (ifp->connected, ifc);
}
/* Update interface address information to protocol daemon. */
if (! CHECK_FLAG (ifc->conf, ZEBRA_IFC_REAL))
{
if_subnet_add (ifp, ifc);
SET_FLAG (ifc->conf, ZEBRA_IFC_REAL);
zebra_interface_address_add_update (ifp, ifc);
if (if_is_up(ifp))
connected_up_ipv4 (ifp, ifc);
}
}
void
connected_down_ipv4 (struct interface *ifp, struct connected *ifc)
{
struct prefix_ipv4 p;
struct prefix_ipv4 *addr;
struct prefix_ipv4 *dest;
if (! CHECK_FLAG (ifc->conf, ZEBRA_IFC_REAL))
return;
addr = (struct prefix_ipv4 *)ifc->address;
dest = (struct prefix_ipv4 *)ifc->destination;
memset (&p, 0, sizeof (struct prefix_ipv4));
p.family = AF_INET;
p.prefixlen = addr->prefixlen;
/* Point-to-point check. */
if (dest && if_is_pointopoint (ifp))
p.prefix = dest->prefix;
else
p.prefix = addr->prefix;
/* Apply mask to the network. */
apply_mask_ipv4 (&p);
/* In case of connected address is 0.0.0.0/0 we treat it tunnel
address. */
if (prefix_ipv4_any (&p))
return;
rib_delete_ipv4 (ZEBRA_ROUTE_CONNECT, 0, &p, NULL, ifp->ifindex, 0);
rib_update ();
}
/* Delete connected IPv4 route to the interface. */
void
connected_delete_ipv4 (struct interface *ifp, int flags, struct in_addr *addr,
int prefixlen, struct in_addr *broad, char *label)
{
struct prefix_ipv4 p;
struct connected *ifc;
memset (&p, 0, sizeof (struct prefix_ipv4));
p.family = AF_INET;
p.prefix = *addr;
p.prefixlen = prefixlen;
ifc = connected_check_ipv4 (ifp, (struct prefix *) &p);
if (! ifc)
return;
/* Update interface address information to protocol daemon. */
if (CHECK_FLAG (ifc->conf, ZEBRA_IFC_REAL))
{
zebra_interface_address_delete_update (ifp, ifc);
if_subnet_delete (ifp, ifc);
connected_down_ipv4 (ifp, ifc);
UNSET_FLAG (ifc->conf, ZEBRA_IFC_REAL);
}
listnode_delete (ifp->connected, ifc);
connected_free (ifc);
}
#ifdef HAVE_IPV6
/* If same interface address is already exist... */
struct connected *
connected_check_ipv6 (struct interface *ifp, struct prefix *p)
{
struct connected *ifc;
struct listnode *node;
for (node = listhead (ifp->connected); node; node = nextnode (node))
{
ifc = getdata (node);
if (prefix_same (ifc->address, p))
return ifc;
}
return 0;
}
void
connected_up_ipv6 (struct interface *ifp, struct connected *ifc)
{
struct prefix_ipv6 p;
struct prefix_ipv6 *addr;
struct prefix_ipv6 *dest;
if (! CHECK_FLAG (ifc->conf, ZEBRA_IFC_REAL))
return;
addr = (struct prefix_ipv6 *) ifc->address;
dest = (struct prefix_ipv6 *) ifc->destination;
memset (&p, 0, sizeof (struct prefix_ipv6));
p.family = AF_INET6;
p.prefixlen = addr->prefixlen;
if (if_is_pointopoint (ifp) && dest)
{
if (IN6_IS_ADDR_UNSPECIFIED (&dest->prefix))
p.prefix = addr->prefix;
else
p.prefix = dest->prefix;
}
else
p.prefix = addr->prefix;
/* Apply mask to the network. */
apply_mask_ipv6 (&p);
#if ! defined (MUSICA) && ! defined (LINUX)
/* XXX: It is already done by rib_bogus_ipv6 within rib_add_ipv6 */
if (IN6_IS_ADDR_UNSPECIFIED (&p.prefix))
return;
#endif
rib_add_ipv6 (ZEBRA_ROUTE_CONNECT, 0, &p, NULL, ifp->ifindex, 0);
rib_update ();
}
/* Add connected IPv6 route to the interface. */
void
connected_add_ipv6 (struct interface *ifp, struct in6_addr *addr,
int prefixlen, struct in6_addr *broad)
{
struct prefix_ipv6 *p;
struct connected *ifc;
struct connected *current;
/* Make connected structure. */
ifc = connected_new ();
ifc->ifp = ifp;
/* Allocate new connected address. */
p = prefix_ipv6_new ();
p->family = AF_INET6;
IPV6_ADDR_COPY (&p->prefix, addr);
p->prefixlen = prefixlen;
ifc->address = (struct prefix *) p;
/* If there is broadcast or pointopoint address. */
if (broad)
{
p = prefix_ipv6_new ();
p->family = AF_INET6;
IPV6_ADDR_COPY (&p->prefix, broad);
ifc->destination = (struct prefix *) p;
}
current = connected_check_ipv6 (ifp, (struct prefix *) ifc->address);
if (current)
{
connected_free (ifc);
ifc = current;
}
else
{
listnode_add (ifp->connected, ifc);
}
/* Update interface address information to protocol daemon. */
if (! CHECK_FLAG (ifc->conf, ZEBRA_IFC_REAL))
{
SET_FLAG (ifc->conf, ZEBRA_IFC_REAL);
zebra_interface_address_add_update (ifp, ifc);
if (if_is_up(ifp))
connected_up_ipv6 (ifp, ifc);
}
}
void
connected_down_ipv6 (struct interface *ifp, struct connected *ifc)
{
struct prefix_ipv6 p;
struct prefix_ipv6 *addr;
struct prefix_ipv6 *dest;
if (! CHECK_FLAG (ifc->conf, ZEBRA_IFC_REAL))
return;
addr = (struct prefix_ipv6 *) ifc->address;
dest = (struct prefix_ipv6 *) ifc->destination;
memset (&p, 0, sizeof (struct prefix_ipv6));
p.family = AF_INET6;
p.prefixlen = addr->prefixlen;
if (if_is_pointopoint (ifp) && dest)
{
if (IN6_IS_ADDR_UNSPECIFIED (&dest->prefix))
p.prefix = addr->prefix;
else
p.prefix = dest->prefix;
}
else
p.prefix = addr->prefix;
apply_mask_ipv6 (&p);
if (IN6_IS_ADDR_UNSPECIFIED (&p.prefix))
return;
rib_delete_ipv6 (ZEBRA_ROUTE_CONNECT, 0, &p, NULL, ifp->ifindex, 0);
rib_update ();
}
void
connected_delete_ipv6 (struct interface *ifp, struct in6_addr *address,
int prefixlen, struct in6_addr *broad)
{
struct prefix_ipv6 p;
struct connected *ifc;
memset (&p, 0, sizeof (struct prefix_ipv6));
p.family = AF_INET6;
memcpy (&p.prefix, address, sizeof (struct in6_addr));
p.prefixlen = prefixlen;
ifc = connected_check_ipv6 (ifp, (struct prefix *) &p);
if (! ifc)
return;
/* Update interface address information to protocol daemon. */
if (CHECK_FLAG (ifc->conf, ZEBRA_IFC_REAL))
{
zebra_interface_address_delete_update (ifp, ifc);
connected_down_ipv6 (ifp, ifc);
UNSET_FLAG (ifc->conf, ZEBRA_IFC_REAL);
}
listnode_delete (ifp->connected, ifc);
connected_free (ifc);
}
#endif /* HAVE_IPV6 */
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