]>
Commit | Line | Data |
---|---|---|
718e3744 | 1 | /* |
2 | * RIPngd and zebra interface. | |
3 | * Copyright (C) 1998, 1999 Kunihiro Ishiguro | |
4 | * | |
5 | * This file is part of GNU Zebra. | |
6 | * | |
7 | * GNU Zebra is free software; you can redistribute it and/or modify it | |
8 | * under the terms of the GNU General Public License as published by the | |
9 | * Free Software Foundation; either version 2, or (at your option) any | |
10 | * later version. | |
11 | * | |
12 | * GNU Zebra is distributed in the hope that it will be useful, but | |
13 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | * General Public License for more details. | |
16 | * | |
896014f4 DL |
17 | * You should have received a copy of the GNU General Public License along |
18 | * with this program; see the file COPYING; if not, write to the Free Software | |
19 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
718e3744 | 20 | */ |
21 | ||
22 | #include <zebra.h> | |
23 | ||
24 | #include "command.h" | |
25 | #include "prefix.h" | |
fe08ba7e | 26 | #include "agg_table.h" |
718e3744 | 27 | #include "stream.h" |
c880b636 | 28 | #include "memory.h" |
718e3744 | 29 | #include "routemap.h" |
30 | #include "zclient.h" | |
31 | #include "log.h" | |
32 | ||
33 | #include "ripngd/ripngd.h" | |
c880b636 | 34 | #include "ripngd/ripng_debug.h" |
718e3744 | 35 | |
36 | /* All information about zebra. */ | |
37 | struct zclient *zclient = NULL; | |
38 | ||
c880b636 | 39 | /* Send ECMP routes to zebra. */ |
fe08ba7e | 40 | static void ripng_zebra_ipv6_send(struct agg_node *rp, 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 ripng_info *rinfo = NULL; | |
47 | int count = 0; | |
48 | ||
c9fb3e23 | 49 | memset(&api, 0, sizeof(api)); |
d00061ea RW |
50 | api.vrf_id = VRF_DEFAULT; |
51 | api.type = ZEBRA_ROUTE_RIPNG; | |
d00061ea | 52 | api.safi = SAFI_UNICAST; |
c9fb3e23 | 53 | api.prefix = rp->p; |
d62a17ae | 54 | |
d00061ea | 55 | SET_FLAG(api.message, ZAPI_MESSAGE_NEXTHOP); |
d00061ea | 56 | for (ALL_LIST_ELEMENTS_RO(list, listnode, rinfo)) { |
a74e593b RW |
57 | if (count >= MULTIPATH_NUM) |
58 | break; | |
c9fb3e23 | 59 | api_nh = &api.nexthops[count]; |
4a7371e9 | 60 | api_nh->vrf_id = VRF_DEFAULT; |
c9fb3e23 RW |
61 | api_nh->gate.ipv6 = rinfo->nexthop; |
62 | api_nh->ifindex = rinfo->ifindex; | |
63 | api_nh->type = NEXTHOP_TYPE_IPV6_IFINDEX; | |
d00061ea | 64 | count++; |
c9fb3e23 | 65 | if (cmd == ZEBRA_ROUTE_ADD) |
d00061ea RW |
66 | SET_FLAG(rinfo->flags, RIPNG_RTF_FIB); |
67 | else | |
68 | UNSET_FLAG(rinfo->flags, RIPNG_RTF_FIB); | |
69 | } | |
d62a17ae | 70 | |
d00061ea | 71 | api.nexthop_num = count; |
d62a17ae | 72 | |
d00061ea | 73 | rinfo = listgetdata(listhead(list)); |
d62a17ae | 74 | |
d00061ea RW |
75 | SET_FLAG(api.message, ZAPI_MESSAGE_METRIC); |
76 | api.metric = rinfo->metric; | |
d62a17ae | 77 | |
d00061ea RW |
78 | if (rinfo->tag) { |
79 | SET_FLAG(api.message, ZAPI_MESSAGE_TAG); | |
80 | api.tag = rinfo->tag; | |
81 | } | |
d62a17ae | 82 | |
c9fb3e23 | 83 | zclient_route_send(cmd, zclient, &api); |
d00061ea RW |
84 | |
85 | if (IS_RIPNG_DEBUG_ZEBRA) { | |
86 | if (ripng->ecmp) | |
87 | zlog_debug("%s: %s/%d nexthops %d", | |
c9fb3e23 | 88 | (cmd == ZEBRA_ROUTE_ADD) |
d00061ea RW |
89 | ? "Install into zebra" |
90 | : "Delete from zebra", | |
91 | inet6_ntoa(rp->p.u.prefix6), rp->p.prefixlen, | |
92 | count); | |
93 | else | |
c9fb3e23 RW |
94 | zlog_debug( |
95 | "%s: %s/%d", | |
96 | (cmd == ZEBRA_ROUTE_ADD) ? "Install into zebra" | |
97 | : "Delete from zebra", | |
98 | inet6_ntoa(rp->p.u.prefix6), rp->p.prefixlen); | |
d62a17ae | 99 | } |
718e3744 | 100 | } |
101 | ||
c880b636 | 102 | /* Add/update ECMP routes to zebra. */ |
fe08ba7e | 103 | void ripng_zebra_ipv6_add(struct agg_node *rp) |
718e3744 | 104 | { |
c9fb3e23 | 105 | ripng_zebra_ipv6_send(rp, ZEBRA_ROUTE_ADD); |
c880b636 | 106 | } |
718e3744 | 107 | |
c880b636 | 108 | /* Delete ECMP routes from zebra. */ |
fe08ba7e | 109 | void ripng_zebra_ipv6_delete(struct agg_node *rp) |
c880b636 | 110 | { |
c9fb3e23 | 111 | ripng_zebra_ipv6_send(rp, ZEBRA_ROUTE_DELETE); |
718e3744 | 112 | } |
113 | ||
114 | /* Zebra route add and delete treatment. */ | |
74489921 RW |
115 | static int ripng_zebra_read_route(int command, struct zclient *zclient, |
116 | zebra_size_t length, vrf_id_t vrf_id) | |
718e3744 | 117 | { |
74489921 | 118 | struct zapi_route api; |
d62a17ae | 119 | struct in6_addr nexthop; |
74489921 | 120 | unsigned long ifindex; |
d62a17ae | 121 | |
74489921 RW |
122 | if (zapi_route_decode(zclient->ibuf, &api) < 0) |
123 | return -1; | |
d62a17ae | 124 | |
74489921 RW |
125 | /* we completely ignore srcdest routes for now. */ |
126 | if (CHECK_FLAG(api.message, ZAPI_MESSAGE_SRCPFX)) | |
127 | return 0; | |
d62a17ae | 128 | |
74489921 RW |
129 | nexthop = api.nexthops[0].gate.ipv6; |
130 | ifindex = api.nexthops[0].ifindex; | |
d62a17ae | 131 | |
74489921 RW |
132 | if (command == ZEBRA_REDISTRIBUTE_ROUTE_ADD) |
133 | ripng_redistribute_add(api.type, RIPNG_ROUTE_REDISTRIBUTE, | |
134 | (struct prefix_ipv6 *)&api.prefix, | |
d62a17ae | 135 | ifindex, &nexthop, api.tag); |
136 | else | |
137 | ripng_redistribute_delete(api.type, RIPNG_ROUTE_REDISTRIBUTE, | |
74489921 RW |
138 | (struct prefix_ipv6 *)&api.prefix, |
139 | ifindex); | |
d62a17ae | 140 | |
141 | return 0; | |
718e3744 | 142 | } |
143 | ||
db2038c7 | 144 | void ripng_redistribute_conf_update(int type) |
718e3744 | 145 | { |
db2038c7 RW |
146 | zclient_redistribute(ZEBRA_REDISTRIBUTE_ADD, zclient, AFI_IP6, type, 0, |
147 | VRF_DEFAULT); | |
148 | } | |
7076bb2f | 149 | |
db2038c7 RW |
150 | void ripng_redistribute_conf_delete(int type) |
151 | { | |
d62a17ae | 152 | if (zclient->sock > 0) |
153 | zebra_redistribute_send(ZEBRA_REDISTRIBUTE_DELETE, zclient, | |
154 | AFI_IP6, type, 0, VRF_DEFAULT); | |
718e3744 | 155 | |
d62a17ae | 156 | ripng_redistribute_withdraw(type); |
718e3744 | 157 | } |
158 | ||
d62a17ae | 159 | int ripng_redistribute_check(int type) |
a94434b6 | 160 | { |
d62a17ae | 161 | return vrf_bitmap_check(zclient->redist[AFI_IP6][type], VRF_DEFAULT); |
a94434b6 | 162 | } |
163 | ||
d62a17ae | 164 | void ripng_redistribute_clean() |
a94434b6 | 165 | { |
db2038c7 RW |
166 | for (int i = 0; i < ZEBRA_ROUTE_MAX; i++) { |
167 | if (!vrf_bitmap_check(zclient->redist[AFI_IP6][i], VRF_DEFAULT)) | |
168 | continue; | |
d62a17ae | 169 | |
db2038c7 RW |
170 | if (zclient->sock > 0) |
171 | zebra_redistribute_send(ZEBRA_REDISTRIBUTE_DELETE, | |
172 | zclient, AFI_IP6, i, 0, | |
173 | VRF_DEFAULT); | |
d62a17ae | 174 | |
db2038c7 | 175 | vrf_bitmap_unset(zclient->redist[AFI_IP6][i], VRF_DEFAULT); |
718e3744 | 176 | |
db2038c7 RW |
177 | /* Remove the routes from RIP table. */ |
178 | ripng_redistribute_withdraw(i); | |
d62a17ae | 179 | } |
718e3744 | 180 | } |
181 | ||
db2038c7 | 182 | void ripng_redistribute_write(struct vty *vty) |
718e3744 | 183 | { |
d62a17ae | 184 | int i; |
185 | ||
d00061ea RW |
186 | for (i = 0; i < ZEBRA_ROUTE_MAX; i++) { |
187 | if (i == zclient->redist_default | |
188 | || !vrf_bitmap_check(zclient->redist[AFI_IP6][i], | |
189 | VRF_DEFAULT)) | |
190 | continue; | |
191 | ||
db2038c7 | 192 | vty_out(vty, " %s", zebra_route_string(i)); |
d00061ea | 193 | } |
718e3744 | 194 | } |
195 | ||
d62a17ae | 196 | static void ripng_zebra_connected(struct zclient *zclient) |
7076bb2f | 197 | { |
d62a17ae | 198 | zclient_send_reg_requests(zclient, VRF_DEFAULT); |
7076bb2f FL |
199 | } |
200 | ||
718e3744 | 201 | /* Initialize zebra structure and it's commands. */ |
d62a17ae | 202 | void zebra_init(struct thread_master *master) |
718e3744 | 203 | { |
d62a17ae | 204 | /* Allocate zebra structure. */ |
26f63a1e | 205 | zclient = zclient_new(master, &zclient_options_default); |
342213ea | 206 | zclient_init(zclient, ZEBRA_ROUTE_RIPNG, 0, &ripngd_privs); |
d62a17ae | 207 | |
208 | zclient->zebra_connected = ripng_zebra_connected; | |
209 | zclient->interface_up = ripng_interface_up; | |
210 | zclient->interface_down = ripng_interface_down; | |
211 | zclient->interface_add = ripng_interface_add; | |
212 | zclient->interface_delete = ripng_interface_delete; | |
213 | zclient->interface_address_add = ripng_interface_address_add; | |
214 | zclient->interface_address_delete = ripng_interface_address_delete; | |
74489921 RW |
215 | zclient->redistribute_route_add = ripng_zebra_read_route; |
216 | zclient->redistribute_route_del = ripng_zebra_read_route; | |
718e3744 | 217 | } |
7feb9237 | 218 | |
d62a17ae | 219 | void ripng_zebra_stop(void) |
7feb9237 | 220 | { |
d62a17ae | 221 | zclient_stop(zclient); |
222 | zclient_free(zclient); | |
7feb9237 | 223 | } |