diff options
Diffstat (limited to 'ripd/rip_peer.c')
| -rw-r--r-- | ripd/rip_peer.c | 172 |
1 files changed, 172 insertions, 0 deletions
diff --git a/ripd/rip_peer.c b/ripd/rip_peer.c new file mode 100644 index 0000000..a52914b --- /dev/null +++ b/ripd/rip_peer.c @@ -0,0 +1,172 @@ +/* RIP 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 this program; see the file COPYING; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <zebra.h> + +#include "if.h" +#include "prefix.h" +#include "command.h" +#include "linklist.h" +#include "thread.h" +#include "memory.h" + +#include "ripd/ripd.h" + +DEFINE_MTYPE_STATIC(RIPD, RIP_PEER, "RIP peer"); + +static struct rip_peer *rip_peer_new(void) +{ + return XCALLOC(MTYPE_RIP_PEER, sizeof(struct rip_peer)); +} + +static void rip_peer_free(struct rip_peer *peer) +{ + THREAD_OFF(peer->t_timeout); + XFREE(MTYPE_RIP_PEER, peer); +} + +struct rip_peer *rip_peer_lookup(struct rip *rip, struct in_addr *addr) +{ + struct rip_peer *peer; + struct listnode *node, *nnode; + + for (ALL_LIST_ELEMENTS(rip->peer_list, node, nnode, peer)) { + if (IPV4_ADDR_SAME(&peer->addr, addr)) + return peer; + } + return NULL; +} + +struct rip_peer *rip_peer_lookup_next(struct rip *rip, struct in_addr *addr) +{ + struct rip_peer *peer; + struct listnode *node, *nnode; + + for (ALL_LIST_ELEMENTS(rip->peer_list, node, nnode, peer)) { + if (htonl(peer->addr.s_addr) > htonl(addr->s_addr)) + return peer; + } + return NULL; +} + +/* RIP peer is timeout. */ +static void rip_peer_timeout(struct thread *t) +{ + struct rip_peer *peer; + + peer = THREAD_ARG(t); + listnode_delete(peer->rip->peer_list, peer); + rip_peer_free(peer); +} + +/* Get RIP peer. At the same time update timeout thread. */ +static struct rip_peer *rip_peer_get(struct rip *rip, struct in_addr *addr) +{ + struct rip_peer *peer; + + peer = rip_peer_lookup(rip, addr); + + if (peer) { + THREAD_OFF(peer->t_timeout); + } else { + peer = rip_peer_new(); + peer->rip = rip; + peer->addr = *addr; + listnode_add_sort(rip->peer_list, peer); + } + + /* Update timeout thread. */ + thread_add_timer(master, rip_peer_timeout, peer, RIP_PEER_TIMER_DEFAULT, + &peer->t_timeout); + + /* Last update time set. */ + time(&peer->uptime); + + return peer; +} + +void rip_peer_update(struct rip *rip, struct sockaddr_in *from, uint8_t version) +{ + struct rip_peer *peer; + peer = rip_peer_get(rip, &from->sin_addr); + peer->version = version; +} + +void rip_peer_bad_route(struct rip *rip, struct sockaddr_in *from) +{ + struct rip_peer *peer; + peer = rip_peer_get(rip, &from->sin_addr); + peer->recv_badroutes++; +} + +void rip_peer_bad_packet(struct rip *rip, struct sockaddr_in *from) +{ + struct rip_peer *peer; + peer = rip_peer_get(rip, &from->sin_addr); + peer->recv_badpackets++; +} + +/* Display peer uptime. */ +static char *rip_peer_uptime(struct rip_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 rip_peer_display(struct vty *vty, struct rip *rip) +{ + struct rip_peer *peer; + struct listnode *node, *nnode; +#define RIP_UPTIME_LEN 25 + char timebuf[RIP_UPTIME_LEN]; + + for (ALL_LIST_ELEMENTS(rip->peer_list, node, nnode, peer)) { + vty_out(vty, " %-16pI4 %9d %9d %9d %s\n", + &peer->addr, peer->recv_badpackets, + peer->recv_badroutes, ZEBRA_RIP_DISTANCE_DEFAULT, + rip_peer_uptime(peer, timebuf, RIP_UPTIME_LEN)); + } +} + +int rip_peer_list_cmp(struct rip_peer *p1, struct rip_peer *p2) +{ + if (p2->addr.s_addr == p1->addr.s_addr) + return 0; + + return (htonl(p1->addr.s_addr) < htonl(p2->addr.s_addr)) ? -1 : 1; +} + +void rip_peer_list_del(void *arg) +{ + rip_peer_free(arg); +} |