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fe18ee2d DS |
1 | /* zebra NS Routines |
2 | * Copyright (C) 2016 Cumulus Networks, Inc. | |
3 | * Donald Sharp | |
b95c1883 | 4 | * Copyright (C) 2017/2018 6WIND |
fe18ee2d DS |
5 | * |
6 | * This file is part of Quagga. | |
7 | * | |
8 | * Quagga is free software; you can redistribute it and/or modify it | |
9 | * under the terms of the GNU General Public License as published by the | |
10 | * Free Software Foundation; either version 2, or (at your option) any | |
11 | * later version. | |
12 | * | |
13 | * Quagga is distributed in the hope that it will be useful, but | |
14 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | * General Public License for more details. | |
17 | * | |
896014f4 DL |
18 | * You should have received a copy of the GNU General Public License along |
19 | * with this program; see the file COPYING; if not, write to the Free Software | |
20 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
fe18ee2d DS |
21 | */ |
22 | #include "zebra.h" | |
23 | ||
13460c44 | 24 | #include "lib/ns.h" |
fe18ee2d DS |
25 | #include "lib/vrf.h" |
26 | #include "lib/prefix.h" | |
27 | #include "lib/memory.h" | |
28 | ||
fe18ee2d | 29 | #include "zebra_ns.h" |
7c551956 | 30 | #include "zebra_vrf.h" |
05f7f5db | 31 | #include "rt.h" |
b7cfce93 | 32 | #include "zebra_vxlan.h" |
3347430b | 33 | #include "debug.h" |
e27dec3c | 34 | #include "zebra_netns_notify.h" |
ec31f30d | 35 | #include "zebra_netns_id.h" |
43fe6a2a | 36 | #include "zebra_pbr.h" |
c317d3f2 | 37 | #include "zebra_tc.h" |
47a08aa9 | 38 | #include "rib.h" |
8288a24f | 39 | #include "table_manager.h" |
257b245c | 40 | #include "zebra_errors.h" |
ec31f30d PG |
41 | |
42 | extern struct zebra_privs_t zserv_privs; | |
4a1ab8e4 | 43 | |
224ccf29 | 44 | DEFINE_MTYPE_STATIC(ZEBRA, ZEBRA_NS, "Zebra Name Space"); |
fe18ee2d | 45 | |
337960dd | 46 | static struct zebra_ns *dzns; |
fe18ee2d | 47 | |
62b8bb7a | 48 | static int zebra_ns_disable_internal(struct zebra_ns *zns, bool complete); |
736d41ad | 49 | |
d62a17ae | 50 | struct zebra_ns *zebra_ns_lookup(ns_id_t ns_id) |
fe18ee2d | 51 | { |
ff705b15 PG |
52 | if (ns_id == NS_DEFAULT) |
53 | return dzns; | |
54 | struct zebra_ns *info = (struct zebra_ns *)ns_info_lookup(ns_id); | |
55 | ||
56 | return (info == NULL) ? dzns : info; | |
fe18ee2d DS |
57 | } |
58 | ||
3347430b PG |
59 | static struct zebra_ns *zebra_ns_alloc(void) |
60 | { | |
61 | return XCALLOC(MTYPE_ZEBRA_NS, sizeof(struct zebra_ns)); | |
62 | } | |
63 | ||
64 | static int zebra_ns_new(struct ns *ns) | |
65 | { | |
66 | struct zebra_ns *zns; | |
67 | ||
257b245c SW |
68 | if (!ns) |
69 | return -1; | |
70 | ||
3347430b PG |
71 | if (IS_ZEBRA_DEBUG_EVENT) |
72 | zlog_info("ZNS %s with id %u (created)", ns->name, ns->ns_id); | |
73 | ||
74 | zns = zebra_ns_alloc(); | |
75 | ns->info = zns; | |
76 | zns->ns = ns; | |
3f6e9ae5 | 77 | zns->ns_id = ns->ns_id; |
ff705b15 PG |
78 | |
79 | /* Do any needed per-NS data structure allocation. */ | |
80 | zns->if_table = route_table_init(); | |
ff705b15 | 81 | |
3347430b PG |
82 | return 0; |
83 | } | |
84 | ||
85 | static int zebra_ns_delete(struct ns *ns) | |
86 | { | |
996c9314 | 87 | struct zebra_ns *zns = (struct zebra_ns *)ns->info; |
3347430b PG |
88 | |
89 | if (IS_ZEBRA_DEBUG_EVENT) | |
90 | zlog_info("ZNS %s with id %u (deleted)", ns->name, ns->ns_id); | |
91 | if (!zns) | |
92 | return 0; | |
fd4c24f5 | 93 | XFREE(MTYPE_ZEBRA_NS, ns->info); |
3347430b PG |
94 | return 0; |
95 | } | |
96 | ||
97 | static int zebra_ns_enabled(struct ns *ns) | |
98 | { | |
99 | struct zebra_ns *zns = ns->info; | |
100 | ||
101 | if (IS_ZEBRA_DEBUG_EVENT) | |
102 | zlog_info("ZNS %s with id %u (enabled)", ns->name, ns->ns_id); | |
103 | if (!zns) | |
104 | return 0; | |
105 | return zebra_ns_enable(ns->ns_id, (void **)&zns); | |
106 | } | |
107 | ||
ff705b15 | 108 | int zebra_ns_disabled(struct ns *ns) |
3347430b PG |
109 | { |
110 | struct zebra_ns *zns = ns->info; | |
111 | ||
112 | if (IS_ZEBRA_DEBUG_EVENT) | |
113 | zlog_info("ZNS %s with id %u (disabled)", ns->name, ns->ns_id); | |
114 | if (!zns) | |
115 | return 0; | |
62b8bb7a | 116 | return zebra_ns_disable_internal(zns, true); |
3347430b PG |
117 | } |
118 | ||
84915b0a | 119 | /* Do global enable actions - open sockets, read kernel config etc. */ |
d62a17ae | 120 | int zebra_ns_enable(ns_id_t ns_id, void **info) |
fe18ee2d | 121 | { |
d62a17ae | 122 | struct zebra_ns *zns = (struct zebra_ns *)(*info); |
fe18ee2d | 123 | |
ff705b15 PG |
124 | zns->ns_id = ns_id; |
125 | ||
d62a17ae | 126 | kernel_init(zns); |
d166308b | 127 | zebra_dplane_ns_enable(zns, true); |
d62a17ae | 128 | interface_list(zns); |
129 | route_read(zns); | |
ab35be75 | 130 | kernel_read_pbr_rules(zns); |
c317d3f2 | 131 | kernel_read_tc_qdisc(zns); |
fe18ee2d | 132 | |
d62a17ae | 133 | return 0; |
fe18ee2d DS |
134 | } |
135 | ||
62b8bb7a MS |
136 | /* Common handler for ns disable - this can be called during ns config, |
137 | * or during zebra shutdown. | |
138 | */ | |
139 | static int zebra_ns_disable_internal(struct zebra_ns *zns, bool complete) | |
fe18ee2d | 140 | { |
c2270bf1 DS |
141 | if (zns->if_table) |
142 | route_table_finish(zns->if_table); | |
143 | zns->if_table = NULL; | |
fe18ee2d | 144 | |
d166308b MS |
145 | zebra_dplane_ns_enable(zns, false /*Disable*/); |
146 | ||
62b8bb7a | 147 | kernel_terminate(zns, complete); |
fe18ee2d | 148 | |
ff705b15 PG |
149 | zns->ns_id = NS_DEFAULT; |
150 | ||
d62a17ae | 151 | return 0; |
fe18ee2d DS |
152 | } |
153 | ||
62b8bb7a MS |
154 | /* During zebra shutdown, do partial cleanup while the async dataplane |
155 | * is still running. | |
156 | */ | |
2961d060 PG |
157 | int zebra_ns_early_shutdown(struct ns *ns, |
158 | void *param_in __attribute__((unused)), | |
159 | void **param_out __attribute__((unused))) | |
62b8bb7a MS |
160 | { |
161 | struct zebra_ns *zns = ns->info; | |
162 | ||
163 | if (zns == NULL) | |
164 | return 0; | |
165 | ||
2961d060 PG |
166 | zebra_ns_disable_internal(zns, false); |
167 | return NS_WALK_CONTINUE; | |
62b8bb7a MS |
168 | } |
169 | ||
170 | /* During zebra shutdown, do final cleanup | |
171 | * after all dataplane work is complete. | |
172 | */ | |
2961d060 PG |
173 | int zebra_ns_final_shutdown(struct ns *ns, |
174 | void *param_in __attribute__((unused)), | |
175 | void **param_out __attribute__((unused))) | |
62b8bb7a MS |
176 | { |
177 | struct zebra_ns *zns = ns->info; | |
178 | ||
179 | if (zns == NULL) | |
180 | return 0; | |
181 | ||
182 | kernel_terminate(zns, true); | |
183 | ||
2961d060 | 184 | return NS_WALK_CONTINUE; |
62b8bb7a | 185 | } |
5335613b | 186 | |
ac2cb9bf | 187 | int zebra_ns_init(void) |
fe18ee2d | 188 | { |
257b245c | 189 | struct ns *default_ns; |
ec31f30d | 190 | ns_id_t ns_id; |
03aff2d8 | 191 | ns_id_t ns_id_external; |
20f4b2b0 | 192 | struct ns *ns; |
ec31f30d | 193 | |
0cf6db21 | 194 | frr_with_privs(&zserv_privs) { |
01b9e3fd DL |
195 | ns_id = zebra_ns_id_get_default(); |
196 | } | |
03aff2d8 PG |
197 | ns_id_external = ns_map_nsid_with_external(ns_id, true); |
198 | ns_init_management(ns_id_external, ns_id); | |
20f4b2b0 PG |
199 | ns = ns_get_default(); |
200 | if (ns) | |
201 | ns->relative_default_ns = ns_id; | |
736d41ad | 202 | |
1eb92f06 | 203 | default_ns = ns_lookup(NS_DEFAULT); |
257b245c SW |
204 | if (!default_ns) { |
205 | flog_err(EC_ZEBRA_NS_NO_DEFAULT, | |
206 | "%s: failed to find default ns", __func__); | |
207 | exit(EXIT_FAILURE); /* This is non-recoverable */ | |
208 | } | |
209 | ||
84915b0a | 210 | /* Do any needed per-NS data structure allocation. */ |
257b245c SW |
211 | zebra_ns_new(default_ns); |
212 | dzns = default_ns->info; | |
84915b0a | 213 | |
214 | /* Register zebra VRF callbacks, create and activate default VRF. */ | |
d62a17ae | 215 | zebra_vrf_init(); |
fe18ee2d | 216 | |
84915b0a | 217 | /* Default NS is activated */ |
03aff2d8 | 218 | zebra_ns_enable(ns_id_external, (void **)&dzns); |
fe18ee2d | 219 | |
3347430b PG |
220 | if (vrf_is_backend_netns()) { |
221 | ns_add_hook(NS_NEW_HOOK, zebra_ns_new); | |
222 | ns_add_hook(NS_ENABLE_HOOK, zebra_ns_enabled); | |
223 | ns_add_hook(NS_DISABLE_HOOK, zebra_ns_disabled); | |
224 | ns_add_hook(NS_DELETE_HOOK, zebra_ns_delete); | |
e27dec3c PG |
225 | zebra_ns_notify_parse(); |
226 | zebra_ns_notify_init(); | |
3347430b | 227 | } |
7f0ea8a4 | 228 | |
d62a17ae | 229 | return 0; |
fe18ee2d | 230 | } |
b95c1883 PG |
231 | |
232 | int zebra_ns_config_write(struct vty *vty, struct ns *ns) | |
233 | { | |
234 | if (ns && ns->name != NULL) | |
235 | vty_out(vty, " netns %s\n", ns->name); | |
236 | return 0; | |
237 | } |