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718e3744 | 1 | /* RIP peer support |
2 | * Copyright (C) 2000 Kunihiro Ishiguro <kunihiro@zebra.org> | |
3 | * | |
4 | * This file is part of GNU Zebra. | |
5 | * | |
6 | * GNU Zebra is free software; you can redistribute it and/or modify it | |
7 | * under the terms of the GNU General Public License as published by the | |
8 | * Free Software Foundation; either version 2, or (at your option) any | |
9 | * later version. | |
10 | * | |
11 | * GNU Zebra is distributed in the hope that it will be useful, but | |
12 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | * General Public License for more details. | |
15 | * | |
896014f4 DL |
16 | * You should have received a copy of the GNU General Public License along |
17 | * with this program; see the file COPYING; if not, write to the Free Software | |
18 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
718e3744 | 19 | */ |
20 | ||
21 | #include <zebra.h> | |
22 | ||
23 | #include "if.h" | |
24 | #include "prefix.h" | |
25 | #include "command.h" | |
26 | #include "linklist.h" | |
27 | #include "thread.h" | |
28 | #include "memory.h" | |
29 | ||
30 | #include "ripd/ripd.h" | |
31 | ||
bf8d3d6a | 32 | DEFINE_MTYPE_STATIC(RIPD, RIP_PEER, "RIP peer"); |
814a2585 | 33 | |
d62a17ae | 34 | static struct rip_peer *rip_peer_new(void) |
718e3744 | 35 | { |
d62a17ae | 36 | return XCALLOC(MTYPE_RIP_PEER, sizeof(struct rip_peer)); |
718e3744 | 37 | } |
38 | ||
d62a17ae | 39 | static void rip_peer_free(struct rip_peer *peer) |
718e3744 | 40 | { |
711915d2 | 41 | RIP_TIMER_OFF(peer->t_timeout); |
d62a17ae | 42 | XFREE(MTYPE_RIP_PEER, peer); |
718e3744 | 43 | } |
44 | ||
045c5389 | 45 | struct rip_peer *rip_peer_lookup(struct rip *rip, struct in_addr *addr) |
718e3744 | 46 | { |
d62a17ae | 47 | struct rip_peer *peer; |
48 | struct listnode *node, *nnode; | |
49 | ||
29e897ad | 50 | for (ALL_LIST_ELEMENTS(rip->peer_list, node, nnode, peer)) { |
d62a17ae | 51 | if (IPV4_ADDR_SAME(&peer->addr, addr)) |
52 | return peer; | |
53 | } | |
54 | return NULL; | |
718e3744 | 55 | } |
56 | ||
045c5389 | 57 | struct rip_peer *rip_peer_lookup_next(struct rip *rip, struct in_addr *addr) |
718e3744 | 58 | { |
d62a17ae | 59 | struct rip_peer *peer; |
60 | struct listnode *node, *nnode; | |
61 | ||
29e897ad | 62 | for (ALL_LIST_ELEMENTS(rip->peer_list, node, nnode, peer)) { |
d62a17ae | 63 | if (htonl(peer->addr.s_addr) > htonl(addr->s_addr)) |
64 | return peer; | |
65 | } | |
66 | return NULL; | |
718e3744 | 67 | } |
68 | ||
69 | /* RIP peer is timeout. */ | |
d62a17ae | 70 | static int rip_peer_timeout(struct thread *t) |
718e3744 | 71 | { |
d62a17ae | 72 | struct rip_peer *peer; |
718e3744 | 73 | |
d62a17ae | 74 | peer = THREAD_ARG(t); |
045c5389 | 75 | listnode_delete(peer->rip->peer_list, peer); |
d62a17ae | 76 | rip_peer_free(peer); |
718e3744 | 77 | |
d62a17ae | 78 | return 0; |
718e3744 | 79 | } |
80 | ||
81 | /* Get RIP peer. At the same time update timeout thread. */ | |
045c5389 | 82 | static struct rip_peer *rip_peer_get(struct rip *rip, struct in_addr *addr) |
718e3744 | 83 | { |
d62a17ae | 84 | struct rip_peer *peer; |
85 | ||
045c5389 | 86 | peer = rip_peer_lookup(rip, addr); |
d62a17ae | 87 | |
88 | if (peer) { | |
b3d6bc6e | 89 | thread_cancel(&peer->t_timeout); |
d62a17ae | 90 | } else { |
91 | peer = rip_peer_new(); | |
045c5389 | 92 | peer->rip = rip; |
d62a17ae | 93 | peer->addr = *addr; |
29e897ad | 94 | listnode_add_sort(rip->peer_list, peer); |
d62a17ae | 95 | } |
96 | ||
97 | /* Update timeout thread. */ | |
d62a17ae | 98 | thread_add_timer(master, rip_peer_timeout, peer, RIP_PEER_TIMER_DEFAULT, |
99 | &peer->t_timeout); | |
100 | ||
101 | /* Last update time set. */ | |
102 | time(&peer->uptime); | |
103 | ||
104 | return peer; | |
718e3744 | 105 | } |
106 | ||
045c5389 | 107 | void rip_peer_update(struct rip *rip, struct sockaddr_in *from, uint8_t version) |
718e3744 | 108 | { |
d62a17ae | 109 | struct rip_peer *peer; |
045c5389 | 110 | peer = rip_peer_get(rip, &from->sin_addr); |
d62a17ae | 111 | peer->version = version; |
718e3744 | 112 | } |
113 | ||
045c5389 | 114 | void rip_peer_bad_route(struct rip *rip, struct sockaddr_in *from) |
718e3744 | 115 | { |
d62a17ae | 116 | struct rip_peer *peer; |
045c5389 | 117 | peer = rip_peer_get(rip, &from->sin_addr); |
d62a17ae | 118 | peer->recv_badroutes++; |
718e3744 | 119 | } |
120 | ||
045c5389 | 121 | void rip_peer_bad_packet(struct rip *rip, struct sockaddr_in *from) |
718e3744 | 122 | { |
d62a17ae | 123 | struct rip_peer *peer; |
045c5389 | 124 | peer = rip_peer_get(rip, &from->sin_addr); |
d62a17ae | 125 | peer->recv_badpackets++; |
718e3744 | 126 | } |
127 | ||
128 | /* Display peer uptime. */ | |
d62a17ae | 129 | static char *rip_peer_uptime(struct rip_peer *peer, char *buf, size_t len) |
718e3744 | 130 | { |
d62a17ae | 131 | time_t uptime; |
d62a17ae | 132 | |
133 | /* If there is no connection has been done before print `never'. */ | |
134 | if (peer->uptime == 0) { | |
135 | snprintf(buf, len, "never "); | |
136 | return buf; | |
137 | } | |
138 | ||
139 | /* Get current time. */ | |
140 | uptime = time(NULL); | |
141 | uptime -= peer->uptime; | |
d0636ead MS |
142 | |
143 | frrtime_to_interval(uptime, buf, len); | |
144 | ||
d62a17ae | 145 | return buf; |
718e3744 | 146 | } |
147 | ||
045c5389 | 148 | void rip_peer_display(struct vty *vty, struct rip *rip) |
718e3744 | 149 | { |
d62a17ae | 150 | struct rip_peer *peer; |
151 | struct listnode *node, *nnode; | |
718e3744 | 152 | #define RIP_UPTIME_LEN 25 |
d62a17ae | 153 | char timebuf[RIP_UPTIME_LEN]; |
154 | ||
29e897ad | 155 | for (ALL_LIST_ELEMENTS(rip->peer_list, node, nnode, peer)) { |
53bb7f9b MS |
156 | vty_out(vty, " %-16pI4 %9d %9d %9d %s\n", |
157 | &peer->addr, peer->recv_badpackets, | |
d62a17ae | 158 | peer->recv_badroutes, ZEBRA_RIP_DISTANCE_DEFAULT, |
159 | rip_peer_uptime(peer, timebuf, RIP_UPTIME_LEN)); | |
160 | } | |
718e3744 | 161 | } |
162 | ||
29e897ad | 163 | int rip_peer_list_cmp(struct rip_peer *p1, struct rip_peer *p2) |
718e3744 | 164 | { |
27fa3398 DS |
165 | if (p2->addr.s_addr == p1->addr.s_addr) |
166 | return 0; | |
167 | ||
d17743d3 | 168 | return (htonl(p1->addr.s_addr) < htonl(p2->addr.s_addr)) ? -1 : 1; |
718e3744 | 169 | } |
711915d2 RW |
170 | |
171 | void rip_peer_list_del(void *arg) | |
172 | { | |
173 | rip_peer_free(arg); | |
174 | } |