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// SPDX-License-Identifier: GPL-2.0-or-later
/* RIPng peer support
* Copyright (C) 2000 Kunihiro Ishiguro <kunihiro@zebra.org>
*/
/* 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 "frrevent.h"
#include "memory.h"
#include "frrdistance.h"
#include "ripngd/ripngd.h"
#include "ripngd/ripng_nexthop.h"
DEFINE_MTYPE_STATIC(RIPNGD, RIPNG_PEER, "RIPng peer");
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)
{
EVENT_OFF(peer->t_timeout);
XFREE(MTYPE_RIPNG_PEER, peer);
}
struct ripng_peer *ripng_peer_lookup(struct ripng *ripng, struct in6_addr *addr)
{
struct ripng_peer *peer;
struct listnode *node, *nnode;
for (ALL_LIST_ELEMENTS(ripng->peer_list, node, nnode, peer)) {
if (IPV6_ADDR_SAME(&peer->addr, addr))
return peer;
}
return NULL;
}
struct ripng_peer *ripng_peer_lookup_next(struct ripng *ripng,
struct in6_addr *addr)
{
struct ripng_peer *peer;
struct listnode *node, *nnode;
for (ALL_LIST_ELEMENTS(ripng->peer_list, node, nnode, peer)) {
if (addr6_cmp(&peer->addr, addr) > 0)
return peer;
}
return NULL;
}
/* RIPng peer is timeout.
* Garbage collector.
**/
static void ripng_peer_timeout(struct event *t)
{
struct ripng_peer *peer;
peer = EVENT_ARG(t);
listnode_delete(peer->ripng->peer_list, peer);
ripng_peer_free(peer);
}
/* Get RIPng peer. At the same time update timeout thread. */
static struct ripng_peer *ripng_peer_get(struct ripng *ripng,
struct in6_addr *addr)
{
struct ripng_peer *peer;
peer = ripng_peer_lookup(ripng, addr);
if (peer) {
EVENT_OFF(peer->t_timeout);
} else {
peer = ripng_peer_new();
peer->ripng = ripng;
peer->addr = *addr;
listnode_add_sort(ripng->peer_list, peer);
}
/* Update timeout thread. */
event_add_timer(master, ripng_peer_timeout, peer,
RIPNG_PEER_TIMER_DEFAULT, &peer->t_timeout);
/* Last update time set. */
time(&peer->uptime);
return peer;
}
void ripng_peer_update(struct ripng *ripng, struct sockaddr_in6 *from,
uint8_t version)
{
struct ripng_peer *peer;
peer = ripng_peer_get(ripng, &from->sin6_addr);
peer->version = version;
}
void ripng_peer_bad_route(struct ripng *ripng, struct sockaddr_in6 *from)
{
struct ripng_peer *peer;
peer = ripng_peer_get(ripng, &from->sin6_addr);
peer->recv_badroutes++;
}
void ripng_peer_bad_packet(struct ripng *ripng, struct sockaddr_in6 *from)
{
struct ripng_peer *peer;
peer = ripng_peer_get(ripng, &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;
/* 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;
frrtime_to_interval(uptime, buf, len);
return buf;
}
void ripng_peer_display(struct vty *vty, struct ripng *ripng)
{
struct ripng_peer *peer;
struct listnode *node, *nnode;
#define RIPNG_UPTIME_LEN 25
char timebuf[RIPNG_UPTIME_LEN];
for (ALL_LIST_ELEMENTS(ripng->peer_list, node, nnode, peer)) {
vty_out(vty, " %pI6 \n%14s %10d %10d %10d %s\n",
&peer->addr, " ", peer->recv_badpackets,
peer->recv_badroutes, ZEBRA_RIPNG_DISTANCE_DEFAULT,
ripng_peer_uptime(peer, timebuf, RIPNG_UPTIME_LEN));
}
}
int ripng_peer_list_cmp(struct ripng_peer *p1, struct ripng_peer *p2)
{
return memcmp(&p1->addr, &p2->addr, sizeof(struct in6_addr));
}
void ripng_peer_list_del(void *arg)
{
ripng_peer_free(arg);
}
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