]>
Commit | Line | Data |
---|---|---|
718e3744 | 1 | /* RIPd and zebra interface. |
2 | * Copyright (C) 1997, 1999 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 "command.h" | |
24 | #include "prefix.h" | |
bce8e868 | 25 | #include "table.h" |
718e3744 | 26 | #include "stream.h" |
bce8e868 | 27 | #include "memory.h" |
718e3744 | 28 | #include "zclient.h" |
29 | #include "log.h" | |
7076bb2f | 30 | #include "vrf.h" |
718e3744 | 31 | #include "ripd/ripd.h" |
32 | #include "ripd/rip_debug.h" | |
dc63bfd4 | 33 | #include "ripd/rip_interface.h" |
718e3744 | 34 | |
35 | /* All information about zebra. */ | |
36 | struct zclient *zclient = NULL; | |
6b0655a2 | 37 | |
bce8e868 | 38 | /* Send ECMP routes to zebra. */ |
045c5389 RW |
39 | static void rip_zebra_ipv4_send(struct rip *rip, struct route_node *rp, |
40 | uint8_t cmd) | |
718e3744 | 41 | { |
d62a17ae | 42 | struct list *list = (struct list *)rp->info; |
c9fb3e23 RW |
43 | struct zapi_route api; |
44 | struct zapi_nexthop *api_nh; | |
d62a17ae | 45 | struct listnode *listnode = NULL; |
46 | struct rip_info *rinfo = NULL; | |
47 | int count = 0; | |
48 | ||
c9fb3e23 | 49 | memset(&api, 0, sizeof(api)); |
ae7b826a | 50 | api.vrf_id = rip->vrf->vrf_id; |
d00061ea | 51 | api.type = ZEBRA_ROUTE_RIP; |
d00061ea RW |
52 | api.safi = SAFI_UNICAST; |
53 | ||
d00061ea RW |
54 | SET_FLAG(api.message, ZAPI_MESSAGE_NEXTHOP); |
55 | for (ALL_LIST_ELEMENTS_RO(list, listnode, rinfo)) { | |
a74e593b RW |
56 | if (count >= MULTIPATH_NUM) |
57 | break; | |
c9fb3e23 | 58 | api_nh = &api.nexthops[count]; |
ae7b826a | 59 | api_nh->vrf_id = rip->vrf->vrf_id; |
dd127197 | 60 | api_nh->gate = rinfo->nh.gate; |
c9fb3e23 RW |
61 | api_nh->type = NEXTHOP_TYPE_IPV4; |
62 | if (cmd == ZEBRA_ROUTE_ADD) | |
d00061ea RW |
63 | SET_FLAG(rinfo->flags, RIP_RTF_FIB); |
64 | else | |
65 | UNSET_FLAG(rinfo->flags, RIP_RTF_FIB); | |
c9fb3e23 | 66 | count++; |
d00061ea | 67 | } |
d62a17ae | 68 | |
c9fb3e23 | 69 | api.prefix = rp->p; |
d00061ea | 70 | api.nexthop_num = count; |
d62a17ae | 71 | |
d00061ea | 72 | rinfo = listgetdata(listhead(list)); |
d62a17ae | 73 | |
d00061ea RW |
74 | SET_FLAG(api.message, ZAPI_MESSAGE_METRIC); |
75 | api.metric = rinfo->metric; | |
d62a17ae | 76 | |
d00061ea RW |
77 | if (rinfo->distance && rinfo->distance != ZEBRA_RIP_DISTANCE_DEFAULT) { |
78 | SET_FLAG(api.message, ZAPI_MESSAGE_DISTANCE); | |
79 | api.distance = rinfo->distance; | |
80 | } | |
d62a17ae | 81 | |
d00061ea RW |
82 | if (rinfo->tag) { |
83 | SET_FLAG(api.message, ZAPI_MESSAGE_TAG); | |
84 | api.tag = rinfo->tag; | |
85 | } | |
d62a17ae | 86 | |
c9fb3e23 | 87 | zclient_route_send(cmd, zclient, &api); |
d00061ea RW |
88 | |
89 | if (IS_RIP_DEBUG_ZEBRA) { | |
90 | if (rip->ecmp) | |
91 | zlog_debug("%s: %s/%d nexthops %d", | |
c9fb3e23 | 92 | (cmd == ZEBRA_ROUTE_ADD) |
d00061ea RW |
93 | ? "Install into zebra" |
94 | : "Delete from zebra", | |
95 | inet_ntoa(rp->p.u.prefix4), rp->p.prefixlen, | |
96 | count); | |
97 | else | |
98 | zlog_debug("%s: %s/%d", | |
c9fb3e23 | 99 | (cmd == ZEBRA_ROUTE_ADD) |
d00061ea RW |
100 | ? "Install into zebra" |
101 | : "Delete from zebra", | |
102 | inet_ntoa(rp->p.u.prefix4), rp->p.prefixlen); | |
d62a17ae | 103 | } |
d00061ea | 104 | |
c08a2107 | 105 | rip->counters.route_changes++; |
718e3744 | 106 | } |
107 | ||
bce8e868 | 108 | /* Add/update ECMP routes to zebra. */ |
045c5389 | 109 | void rip_zebra_ipv4_add(struct rip *rip, struct route_node *rp) |
718e3744 | 110 | { |
045c5389 | 111 | rip_zebra_ipv4_send(rip, rp, ZEBRA_ROUTE_ADD); |
bce8e868 | 112 | } |
718e3744 | 113 | |
bce8e868 | 114 | /* Delete ECMP routes from zebra. */ |
045c5389 | 115 | void rip_zebra_ipv4_delete(struct rip *rip, struct route_node *rp) |
bce8e868 | 116 | { |
045c5389 | 117 | rip_zebra_ipv4_send(rip, rp, ZEBRA_ROUTE_DELETE); |
718e3744 | 118 | } |
119 | ||
120 | /* Zebra route add and delete treatment. */ | |
121f9dee | 121 | static int rip_zebra_read_route(ZAPI_CALLBACK_ARGS) |
718e3744 | 122 | { |
045c5389 | 123 | struct rip *rip; |
74489921 | 124 | struct zapi_route api; |
3f5682c8 | 125 | struct nexthop nh; |
d62a17ae | 126 | |
045c5389 | 127 | rip = rip_lookup_by_vrf_id(vrf_id); |
d62a17ae | 128 | if (!rip) |
129 | return 0; | |
130 | ||
74489921 RW |
131 | if (zapi_route_decode(zclient->ibuf, &api) < 0) |
132 | return -1; | |
133 | ||
3f5682c8 DS |
134 | memset(&nh, 0, sizeof(nh)); |
135 | nh.type = api.nexthops[0].type; | |
136 | nh.gate.ipv4 = api.nexthops[0].gate.ipv4; | |
137 | nh.ifindex = api.nexthops[0].ifindex; | |
d62a17ae | 138 | |
139 | /* Then fetch IPv4 prefixes. */ | |
121f9dee | 140 | if (cmd == ZEBRA_REDISTRIBUTE_ROUTE_ADD) |
045c5389 | 141 | rip_redistribute_add(rip, api.type, RIP_ROUTE_REDISTRIBUTE, |
3f5682c8 | 142 | (struct prefix_ipv4 *)&api.prefix, &nh, |
996c9314 | 143 | api.metric, api.distance, api.tag); |
121f9dee | 144 | else if (cmd == ZEBRA_REDISTRIBUTE_ROUTE_DEL) |
045c5389 | 145 | rip_redistribute_delete(rip, api.type, RIP_ROUTE_REDISTRIBUTE, |
74489921 | 146 | (struct prefix_ipv4 *)&api.prefix, |
3f5682c8 | 147 | nh.ifindex); |
d62a17ae | 148 | |
149 | return 0; | |
718e3744 | 150 | } |
151 | ||
045c5389 | 152 | void rip_redistribute_conf_update(struct rip *rip, int type) |
718e3744 | 153 | { |
908f0020 | 154 | zclient_redistribute(ZEBRA_REDISTRIBUTE_ADD, zclient, AFI_IP, type, |
ae7b826a | 155 | 0, rip->vrf->vrf_id); |
718e3744 | 156 | } |
6b0655a2 | 157 | |
045c5389 | 158 | void rip_redistribute_conf_delete(struct rip *rip, int type) |
718e3744 | 159 | { |
d62a17ae | 160 | if (zclient->sock > 0) |
161 | zebra_redistribute_send(ZEBRA_REDISTRIBUTE_DELETE, zclient, | |
ae7b826a | 162 | AFI_IP, type, 0, rip->vrf->vrf_id); |
718e3744 | 163 | |
d62a17ae | 164 | /* Remove the routes from RIP table. */ |
045c5389 | 165 | rip_redistribute_withdraw(rip, type); |
718e3744 | 166 | } |
167 | ||
045c5389 | 168 | int rip_redistribute_check(struct rip *rip, int type) |
718e3744 | 169 | { |
f9120f71 | 170 | return rip->redist[type].enabled; |
718e3744 | 171 | } |
172 | ||
f9120f71 | 173 | void rip_redistribute_enable(struct rip *rip) |
718e3744 | 174 | { |
908f0020 | 175 | for (int i = 0; i < ZEBRA_ROUTE_MAX; i++) { |
f9120f71 | 176 | if (!rip_redistribute_check(rip, i)) |
908f0020 | 177 | continue; |
d62a17ae | 178 | |
f9120f71 RW |
179 | zebra_redistribute_send(ZEBRA_REDISTRIBUTE_ADD, zclient, AFI_IP, |
180 | i, 0, rip->vrf->vrf_id); | |
181 | } | |
182 | } | |
d62a17ae | 183 | |
f9120f71 RW |
184 | void rip_redistribute_disable(struct rip *rip) |
185 | { | |
186 | for (int i = 0; i < ZEBRA_ROUTE_MAX; i++) { | |
187 | if (!rip_redistribute_check(rip, i)) | |
188 | continue; | |
189 | ||
190 | zebra_redistribute_send(ZEBRA_REDISTRIBUTE_DELETE, zclient, | |
191 | AFI_IP, i, 0, rip->vrf->vrf_id); | |
d62a17ae | 192 | } |
16705130 | 193 | } |
194 | ||
045c5389 | 195 | void rip_show_redistribute_config(struct vty *vty, struct rip *rip) |
718e3744 | 196 | { |
908f0020 | 197 | for (int i = 0; i < ZEBRA_ROUTE_MAX; i++) { |
d00061ea | 198 | if (i == zclient->redist_default |
f9120f71 | 199 | || !rip_redistribute_check(rip, i)) |
d00061ea RW |
200 | continue; |
201 | ||
908f0020 | 202 | vty_out(vty, " %s", zebra_route_string(i)); |
d00061ea | 203 | } |
718e3744 | 204 | } |
205 | ||
ae7b826a RW |
206 | void rip_zebra_vrf_register(struct vrf *vrf) |
207 | { | |
208 | if (vrf->vrf_id == VRF_DEFAULT) | |
209 | return; | |
210 | ||
211 | if (IS_RIP_DEBUG_EVENT) | |
212 | zlog_debug("%s: register VRF %s(%u) to zebra", __func__, | |
213 | vrf->name, vrf->vrf_id); | |
214 | ||
215 | zclient_send_reg_requests(zclient, vrf->vrf_id); | |
216 | } | |
217 | ||
218 | void rip_zebra_vrf_deregister(struct vrf *vrf) | |
219 | { | |
220 | if (vrf->vrf_id == VRF_DEFAULT) | |
221 | return; | |
222 | ||
223 | if (IS_RIP_DEBUG_EVENT) | |
224 | zlog_debug("%s: deregister VRF %s(%u) from zebra.", __func__, | |
225 | vrf->name, vrf->vrf_id); | |
226 | ||
227 | zclient_send_dereg_requests(zclient, vrf->vrf_id); | |
228 | } | |
229 | ||
d62a17ae | 230 | static void rip_zebra_connected(struct zclient *zclient) |
7076bb2f | 231 | { |
d62a17ae | 232 | zclient_send_reg_requests(zclient, VRF_DEFAULT); |
7076bb2f FL |
233 | } |
234 | ||
d62a17ae | 235 | void rip_zclient_init(struct thread_master *master) |
718e3744 | 236 | { |
d62a17ae | 237 | /* Set default value to the zebra client structure. */ |
26f63a1e | 238 | zclient = zclient_new(master, &zclient_options_default); |
342213ea | 239 | zclient_init(zclient, ZEBRA_ROUTE_RIP, 0, &ripd_privs); |
d62a17ae | 240 | zclient->zebra_connected = rip_zebra_connected; |
241 | zclient->interface_add = rip_interface_add; | |
242 | zclient->interface_delete = rip_interface_delete; | |
243 | zclient->interface_address_add = rip_interface_address_add; | |
244 | zclient->interface_address_delete = rip_interface_address_delete; | |
245 | zclient->interface_up = rip_interface_up; | |
246 | zclient->interface_down = rip_interface_down; | |
ae7b826a | 247 | zclient->interface_vrf_update = rip_interface_vrf_update; |
74489921 RW |
248 | zclient->redistribute_route_add = rip_zebra_read_route; |
249 | zclient->redistribute_route_del = rip_zebra_read_route; | |
718e3744 | 250 | } |
a2f9eb82 | 251 | |
d62a17ae | 252 | void rip_zclient_stop(void) |
a2f9eb82 | 253 | { |
d62a17ae | 254 | zclient_stop(zclient); |
255 | zclient_free(zclient); | |
a2f9eb82 | 256 | } |