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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 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with GNU Zebra; see the file COPYING. If not, write to the Free | |
18 | * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA | |
19 | * 02111-1307, USA. | |
20 | */ | |
21 | ||
22 | #include <zebra.h> | |
23 | ||
24 | #include "if.h" | |
25 | #include "prefix.h" | |
26 | #include "command.h" | |
27 | #include "linklist.h" | |
28 | #include "thread.h" | |
29 | #include "memory.h" | |
30 | ||
31 | #include "ripd/ripd.h" | |
32 | ||
33 | /* Linked list of RIP peer. */ | |
34 | struct list *peer_list; | |
35 | \f | |
dc63bfd4 | 36 | static struct rip_peer * |
37 | rip_peer_new (void) | |
718e3744 | 38 | { |
393deb9b | 39 | return XCALLOC (MTYPE_RIP_PEER, sizeof (struct rip_peer)); |
718e3744 | 40 | } |
41 | ||
dc63bfd4 | 42 | static void |
718e3744 | 43 | rip_peer_free (struct rip_peer *peer) |
44 | { | |
45 | XFREE (MTYPE_RIP_PEER, peer); | |
46 | } | |
47 | ||
48 | struct rip_peer * | |
49 | rip_peer_lookup (struct in_addr *addr) | |
50 | { | |
51 | struct rip_peer *peer; | |
1eb8ef25 | 52 | struct listnode *node, *nnode; |
718e3744 | 53 | |
1eb8ef25 | 54 | for (ALL_LIST_ELEMENTS (peer_list, node, nnode, peer)) |
718e3744 | 55 | { |
56 | if (IPV4_ADDR_SAME (&peer->addr, addr)) | |
57 | return peer; | |
58 | } | |
59 | return NULL; | |
60 | } | |
61 | ||
62 | struct rip_peer * | |
63 | rip_peer_lookup_next (struct in_addr *addr) | |
64 | { | |
65 | struct rip_peer *peer; | |
1eb8ef25 | 66 | struct listnode *node, *nnode; |
718e3744 | 67 | |
1eb8ef25 | 68 | for (ALL_LIST_ELEMENTS (peer_list, node, nnode, peer)) |
718e3744 | 69 | { |
70 | if (htonl (peer->addr.s_addr) > htonl (addr->s_addr)) | |
71 | return peer; | |
72 | } | |
73 | return NULL; | |
74 | } | |
75 | ||
76 | /* RIP peer is timeout. */ | |
dc63bfd4 | 77 | static int |
718e3744 | 78 | rip_peer_timeout (struct thread *t) |
79 | { | |
80 | struct rip_peer *peer; | |
81 | ||
82 | peer = THREAD_ARG (t); | |
83 | listnode_delete (peer_list, peer); | |
84 | rip_peer_free (peer); | |
85 | ||
86 | return 0; | |
87 | } | |
88 | ||
89 | /* Get RIP peer. At the same time update timeout thread. */ | |
dc63bfd4 | 90 | static struct rip_peer * |
718e3744 | 91 | rip_peer_get (struct in_addr *addr) |
92 | { | |
93 | struct rip_peer *peer; | |
94 | ||
95 | peer = rip_peer_lookup (addr); | |
96 | ||
97 | if (peer) | |
98 | { | |
99 | if (peer->t_timeout) | |
100 | thread_cancel (peer->t_timeout); | |
101 | } | |
102 | else | |
103 | { | |
104 | peer = rip_peer_new (); | |
105 | peer->addr = *addr; | |
106 | listnode_add_sort (peer_list, peer); | |
107 | } | |
108 | ||
109 | /* Update timeout thread. */ | |
110 | peer->t_timeout = thread_add_timer (master, rip_peer_timeout, peer, | |
111 | RIP_PEER_TIMER_DEFAULT); | |
112 | ||
113 | /* Last update time set. */ | |
114 | time (&peer->uptime); | |
115 | ||
116 | return peer; | |
117 | } | |
118 | ||
119 | void | |
120 | rip_peer_update (struct sockaddr_in *from, u_char version) | |
121 | { | |
122 | struct rip_peer *peer; | |
123 | peer = rip_peer_get (&from->sin_addr); | |
124 | peer->version = version; | |
125 | } | |
126 | ||
127 | void | |
128 | rip_peer_bad_route (struct sockaddr_in *from) | |
129 | { | |
130 | struct rip_peer *peer; | |
131 | peer = rip_peer_get (&from->sin_addr); | |
132 | peer->recv_badroutes++; | |
133 | } | |
134 | ||
135 | void | |
136 | rip_peer_bad_packet (struct sockaddr_in *from) | |
137 | { | |
138 | struct rip_peer *peer; | |
139 | peer = rip_peer_get (&from->sin_addr); | |
140 | peer->recv_badpackets++; | |
141 | } | |
142 | ||
143 | /* Display peer uptime. */ | |
dc63bfd4 | 144 | static char * |
718e3744 | 145 | rip_peer_uptime (struct rip_peer *peer, char *buf, size_t len) |
146 | { | |
147 | time_t uptime; | |
148 | struct tm *tm; | |
149 | ||
150 | /* If there is no connection has been done before print `never'. */ | |
151 | if (peer->uptime == 0) | |
152 | { | |
153 | snprintf (buf, len, "never "); | |
154 | return buf; | |
155 | } | |
156 | ||
157 | /* Get current time. */ | |
158 | uptime = time (NULL); | |
159 | uptime -= peer->uptime; | |
160 | tm = gmtime (&uptime); | |
161 | ||
162 | /* Making formatted timer strings. */ | |
163 | #define ONE_DAY_SECOND 60*60*24 | |
164 | #define ONE_WEEK_SECOND 60*60*24*7 | |
165 | ||
166 | if (uptime < ONE_DAY_SECOND) | |
167 | snprintf (buf, len, "%02d:%02d:%02d", | |
168 | tm->tm_hour, tm->tm_min, tm->tm_sec); | |
169 | else if (uptime < ONE_WEEK_SECOND) | |
170 | snprintf (buf, len, "%dd%02dh%02dm", | |
171 | tm->tm_yday, tm->tm_hour, tm->tm_min); | |
172 | else | |
173 | snprintf (buf, len, "%02dw%dd%02dh", | |
174 | tm->tm_yday/7, tm->tm_yday - ((tm->tm_yday/7) * 7), tm->tm_hour); | |
175 | return buf; | |
176 | } | |
177 | ||
178 | void | |
179 | rip_peer_display (struct vty *vty) | |
180 | { | |
181 | struct rip_peer *peer; | |
1eb8ef25 | 182 | struct listnode *node, *nnode; |
718e3744 | 183 | #define RIP_UPTIME_LEN 25 |
184 | char timebuf[RIP_UPTIME_LEN]; | |
185 | ||
1eb8ef25 | 186 | for (ALL_LIST_ELEMENTS (peer_list, node, nnode, peer)) |
718e3744 | 187 | { |
188 | vty_out (vty, " %-16s %9d %9d %9d %s%s", inet_ntoa (peer->addr), | |
189 | peer->recv_badpackets, peer->recv_badroutes, | |
190 | ZEBRA_RIP_DISTANCE_DEFAULT, | |
191 | rip_peer_uptime (peer, timebuf, RIP_UPTIME_LEN), | |
192 | VTY_NEWLINE); | |
193 | } | |
194 | } | |
195 | ||
dc63bfd4 | 196 | static int |
718e3744 | 197 | rip_peer_list_cmp (struct rip_peer *p1, struct rip_peer *p2) |
198 | { | |
199 | return htonl (p1->addr.s_addr) > htonl (p2->addr.s_addr); | |
200 | } | |
201 | ||
202 | void | |
dc63bfd4 | 203 | rip_peer_init (void) |
718e3744 | 204 | { |
205 | peer_list = list_new (); | |
206 | peer_list->cmp = (int (*)(void *, void *)) rip_peer_list_cmp; | |
207 | } |