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/* RIPng peer support
* Copyright (C) 2000 Kunihiro Ishiguro <kunihiro@zebra.org>
*
* 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.
*/
/* RIPng support added by Vincent Jardin <vincent.jardin@6wind.com>
* Copyright (C) 2002 6WIND
*/
#include <zebra.h>
#include "if.h"
#include "prefix.h"
#include "command.h"
#include "linklist.h"
#include "thread.h"
#include "memory.h"
#include "ripngd/ripngd.h"
#include "ripngd/ripng_nexthop.h"
/* Linked list of RIPng peer. */
struct list *peer_list;
static struct ripng_peer *
ripng_peer_new (void)
{
return XCALLOC (MTYPE_RIPNG_PEER, sizeof (struct ripng_peer));
}
static void
ripng_peer_free (struct ripng_peer *peer)
{
XFREE (MTYPE_RIPNG_PEER, peer);
}
struct ripng_peer *
ripng_peer_lookup (struct in6_addr *addr)
{
struct ripng_peer *peer;
struct listnode *node, *nnode;
for (ALL_LIST_ELEMENTS (peer_list, node, nnode, peer))
{
if (IPV6_ADDR_SAME (&peer->addr, addr))
return peer;
}
return NULL;
}
struct ripng_peer *
ripng_peer_lookup_next (struct in6_addr *addr)
{
struct ripng_peer *peer;
struct listnode *node, *nnode;
for (ALL_LIST_ELEMENTS (peer_list, node, nnode, peer))
{
if (addr6_cmp(&peer->addr, addr) > 0)
return peer;
}
return NULL;
}
/* RIPng peer is timeout.
* Garbage collector.
**/
static int
ripng_peer_timeout (struct thread *t)
{
struct ripng_peer *peer;
peer = THREAD_ARG (t);
listnode_delete (peer_list, peer);
ripng_peer_free (peer);
return 0;
}
/* Get RIPng peer. At the same time update timeout thread. */
static struct ripng_peer *
ripng_peer_get (struct in6_addr *addr)
{
struct ripng_peer *peer;
peer = ripng_peer_lookup (addr);
if (peer)
{
if (peer->t_timeout)
thread_cancel (peer->t_timeout);
}
else
{
peer = ripng_peer_new ();
peer->addr = *addr; /* XXX */
listnode_add_sort (peer_list, peer);
}
/* Update timeout thread. */
peer->t_timeout = thread_add_timer (master, ripng_peer_timeout, peer,
RIPNG_PEER_TIMER_DEFAULT);
/* Last update time set. */
time (&peer->uptime);
return peer;
}
void
ripng_peer_update (struct sockaddr_in6 *from, u_char version)
{
struct ripng_peer *peer;
peer = ripng_peer_get (&from->sin6_addr);
peer->version = version;
}
void
ripng_peer_bad_route (struct sockaddr_in6 *from)
{
struct ripng_peer *peer;
peer = ripng_peer_get (&from->sin6_addr);
peer->recv_badroutes++;
}
void
ripng_peer_bad_packet (struct sockaddr_in6 *from)
{
struct ripng_peer *peer;
peer = ripng_peer_get (&from->sin6_addr);
peer->recv_badpackets++;
}
/* Display peer uptime. */
static char *
ripng_peer_uptime (struct ripng_peer *peer, char *buf, size_t len)
{
time_t uptime;
struct tm *tm;
/* If there is no connection has been done before print `never'. */
if (peer->uptime == 0)
{
snprintf (buf, len, "never ");
return buf;
}
/* Get current time. */
uptime = time (NULL);
uptime -= peer->uptime;
tm = gmtime (&uptime);
/* Making formatted timer strings. */
#define ONE_DAY_SECOND 60*60*24
#define ONE_WEEK_SECOND 60*60*24*7
if (uptime < ONE_DAY_SECOND)
snprintf (buf, len, "%02d:%02d:%02d",
tm->tm_hour, tm->tm_min, tm->tm_sec);
else if (uptime < ONE_WEEK_SECOND)
snprintf (buf, len, "%dd%02dh%02dm",
tm->tm_yday, tm->tm_hour, tm->tm_min);
else
snprintf (buf, len, "%02dw%dd%02dh",
tm->tm_yday/7, tm->tm_yday - ((tm->tm_yday/7) * 7), tm->tm_hour);
return buf;
}
void
ripng_peer_display (struct vty *vty)
{
struct ripng_peer *peer;
struct listnode *node, *nnode;
#define RIPNG_UPTIME_LEN 25
char timebuf[RIPNG_UPTIME_LEN];
for (ALL_LIST_ELEMENTS (peer_list, node, nnode, peer))
{
vty_out (vty, " %s %s%14s %10d %10d %10d %s%s", inet6_ntoa (peer->addr),
VTY_NEWLINE, " ",
peer->recv_badpackets, peer->recv_badroutes,
ZEBRA_RIPNG_DISTANCE_DEFAULT,
ripng_peer_uptime (peer, timebuf, RIPNG_UPTIME_LEN),
VTY_NEWLINE);
}
}
static int
ripng_peer_list_cmp (struct ripng_peer *p1, struct ripng_peer *p2)
{
return addr6_cmp(&p1->addr, &p2->addr) > 0;
}
void
ripng_peer_init ()
{
peer_list = list_new ();
peer_list->cmp = (int (*)(void *, void *)) ripng_peer_list_cmp;
}
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