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acddc0ed | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
718e3744 | 2 | /* RIP peer support |
3 | * Copyright (C) 2000 Kunihiro Ishiguro <kunihiro@zebra.org> | |
718e3744 | 4 | */ |
5 | ||
6 | #include <zebra.h> | |
7 | ||
8 | #include "if.h" | |
9 | #include "prefix.h" | |
10 | #include "command.h" | |
11 | #include "linklist.h" | |
12 | #include "thread.h" | |
13 | #include "memory.h" | |
14 | ||
15 | #include "ripd/ripd.h" | |
16 | ||
bf8d3d6a | 17 | DEFINE_MTYPE_STATIC(RIPD, RIP_PEER, "RIP peer"); |
814a2585 | 18 | |
d62a17ae | 19 | static struct rip_peer *rip_peer_new(void) |
718e3744 | 20 | { |
d62a17ae | 21 | return XCALLOC(MTYPE_RIP_PEER, sizeof(struct rip_peer)); |
718e3744 | 22 | } |
23 | ||
d62a17ae | 24 | static void rip_peer_free(struct rip_peer *peer) |
718e3744 | 25 | { |
580e37a3 | 26 | THREAD_OFF(peer->t_timeout); |
d62a17ae | 27 | XFREE(MTYPE_RIP_PEER, peer); |
718e3744 | 28 | } |
29 | ||
045c5389 | 30 | struct rip_peer *rip_peer_lookup(struct rip *rip, struct in_addr *addr) |
718e3744 | 31 | { |
d62a17ae | 32 | struct rip_peer *peer; |
33 | struct listnode *node, *nnode; | |
34 | ||
29e897ad | 35 | for (ALL_LIST_ELEMENTS(rip->peer_list, node, nnode, peer)) { |
d62a17ae | 36 | if (IPV4_ADDR_SAME(&peer->addr, addr)) |
37 | return peer; | |
38 | } | |
39 | return NULL; | |
718e3744 | 40 | } |
41 | ||
045c5389 | 42 | struct rip_peer *rip_peer_lookup_next(struct rip *rip, struct in_addr *addr) |
718e3744 | 43 | { |
d62a17ae | 44 | struct rip_peer *peer; |
45 | struct listnode *node, *nnode; | |
46 | ||
29e897ad | 47 | for (ALL_LIST_ELEMENTS(rip->peer_list, node, nnode, peer)) { |
d62a17ae | 48 | if (htonl(peer->addr.s_addr) > htonl(addr->s_addr)) |
49 | return peer; | |
50 | } | |
51 | return NULL; | |
718e3744 | 52 | } |
53 | ||
54 | /* RIP peer is timeout. */ | |
cc9f21da | 55 | static void rip_peer_timeout(struct thread *t) |
718e3744 | 56 | { |
d62a17ae | 57 | struct rip_peer *peer; |
718e3744 | 58 | |
d62a17ae | 59 | peer = THREAD_ARG(t); |
045c5389 | 60 | listnode_delete(peer->rip->peer_list, peer); |
d62a17ae | 61 | rip_peer_free(peer); |
718e3744 | 62 | } |
63 | ||
64 | /* Get RIP peer. At the same time update timeout thread. */ | |
045c5389 | 65 | static struct rip_peer *rip_peer_get(struct rip *rip, struct in_addr *addr) |
718e3744 | 66 | { |
d62a17ae | 67 | struct rip_peer *peer; |
68 | ||
045c5389 | 69 | peer = rip_peer_lookup(rip, addr); |
d62a17ae | 70 | |
71 | if (peer) { | |
f6499a76 | 72 | THREAD_OFF(peer->t_timeout); |
d62a17ae | 73 | } else { |
74 | peer = rip_peer_new(); | |
045c5389 | 75 | peer->rip = rip; |
d62a17ae | 76 | peer->addr = *addr; |
29e897ad | 77 | listnode_add_sort(rip->peer_list, peer); |
d62a17ae | 78 | } |
79 | ||
80 | /* Update timeout thread. */ | |
d62a17ae | 81 | thread_add_timer(master, rip_peer_timeout, peer, RIP_PEER_TIMER_DEFAULT, |
82 | &peer->t_timeout); | |
83 | ||
84 | /* Last update time set. */ | |
85 | time(&peer->uptime); | |
86 | ||
87 | return peer; | |
718e3744 | 88 | } |
89 | ||
045c5389 | 90 | void rip_peer_update(struct rip *rip, struct sockaddr_in *from, uint8_t version) |
718e3744 | 91 | { |
d62a17ae | 92 | struct rip_peer *peer; |
045c5389 | 93 | peer = rip_peer_get(rip, &from->sin_addr); |
d62a17ae | 94 | peer->version = version; |
718e3744 | 95 | } |
96 | ||
045c5389 | 97 | void rip_peer_bad_route(struct rip *rip, struct sockaddr_in *from) |
718e3744 | 98 | { |
d62a17ae | 99 | struct rip_peer *peer; |
045c5389 | 100 | peer = rip_peer_get(rip, &from->sin_addr); |
d62a17ae | 101 | peer->recv_badroutes++; |
718e3744 | 102 | } |
103 | ||
045c5389 | 104 | void rip_peer_bad_packet(struct rip *rip, struct sockaddr_in *from) |
718e3744 | 105 | { |
d62a17ae | 106 | struct rip_peer *peer; |
045c5389 | 107 | peer = rip_peer_get(rip, &from->sin_addr); |
d62a17ae | 108 | peer->recv_badpackets++; |
718e3744 | 109 | } |
110 | ||
111 | /* Display peer uptime. */ | |
d62a17ae | 112 | static char *rip_peer_uptime(struct rip_peer *peer, char *buf, size_t len) |
718e3744 | 113 | { |
d62a17ae | 114 | time_t uptime; |
d62a17ae | 115 | |
116 | /* If there is no connection has been done before print `never'. */ | |
117 | if (peer->uptime == 0) { | |
118 | snprintf(buf, len, "never "); | |
119 | return buf; | |
120 | } | |
121 | ||
122 | /* Get current time. */ | |
123 | uptime = time(NULL); | |
124 | uptime -= peer->uptime; | |
d0636ead MS |
125 | |
126 | frrtime_to_interval(uptime, buf, len); | |
127 | ||
d62a17ae | 128 | return buf; |
718e3744 | 129 | } |
130 | ||
045c5389 | 131 | void rip_peer_display(struct vty *vty, struct rip *rip) |
718e3744 | 132 | { |
d62a17ae | 133 | struct rip_peer *peer; |
134 | struct listnode *node, *nnode; | |
718e3744 | 135 | #define RIP_UPTIME_LEN 25 |
d62a17ae | 136 | char timebuf[RIP_UPTIME_LEN]; |
137 | ||
29e897ad | 138 | for (ALL_LIST_ELEMENTS(rip->peer_list, node, nnode, peer)) { |
53bb7f9b MS |
139 | vty_out(vty, " %-16pI4 %9d %9d %9d %s\n", |
140 | &peer->addr, peer->recv_badpackets, | |
d62a17ae | 141 | peer->recv_badroutes, ZEBRA_RIP_DISTANCE_DEFAULT, |
142 | rip_peer_uptime(peer, timebuf, RIP_UPTIME_LEN)); | |
143 | } | |
718e3744 | 144 | } |
145 | ||
29e897ad | 146 | int rip_peer_list_cmp(struct rip_peer *p1, struct rip_peer *p2) |
718e3744 | 147 | { |
27fa3398 DS |
148 | if (p2->addr.s_addr == p1->addr.s_addr) |
149 | return 0; | |
150 | ||
d17743d3 | 151 | return (htonl(p1->addr.s_addr) < htonl(p2->addr.s_addr)) ? -1 : 1; |
718e3744 | 152 | } |
711915d2 RW |
153 | |
154 | void rip_peer_list_del(void *arg) | |
155 | { | |
156 | rip_peer_free(arg); | |
157 | } |