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b72ede27 FL |
1 | /* |
2 | * VRF functions. | |
3 | * Copyright (C) 2014 6WIND S.A. | |
4 | * | |
5 | * This file is part of GNU Zebra. | |
6 | * | |
7 | * GNU Zebra is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published | |
9 | * by the Free Software Foundation; either version 2, or (at your | |
10 | * option) any 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 | |
b72ede27 FL |
20 | */ |
21 | ||
22 | #include <zebra.h> | |
23 | ||
4691b65a PG |
24 | /* for basename */ |
25 | #include <libgen.h> | |
26 | ||
6a69b354 | 27 | #include "if.h" |
b72ede27 | 28 | #include "vrf.h" |
7922fc65 | 29 | #include "vrf_int.h" |
b72ede27 FL |
30 | #include "prefix.h" |
31 | #include "table.h" | |
32 | #include "log.h" | |
33 | #include "memory.h" | |
19dc275e | 34 | #include "command.h" |
b95c1883 | 35 | #include "ns.h" |
3bc34908 | 36 | #include "privs.h" |
98cbbaea | 37 | #include "nexthop_group.h" |
b66d022e | 38 | #include "lib_errors.h" |
bc867a5d | 39 | #include "northbound.h" |
8b4cb7a6 | 40 | #include "northbound_cli.h" |
19dc275e | 41 | |
ec31f30d PG |
42 | /* default VRF ID value used when VRF backend is not NETNS */ |
43 | #define VRF_DEFAULT_INTERNAL 0 | |
dd114702 | 44 | #define VRF_DEFAULT_NAME_INTERNAL "default" |
ec31f30d | 45 | |
d62a17ae | 46 | DEFINE_MTYPE_STATIC(LIB, VRF, "VRF") |
4a1ab8e4 DL |
47 | DEFINE_MTYPE_STATIC(LIB, VRF_BITMAP, "VRF bit-map") |
48 | ||
e80e7cce DL |
49 | DEFINE_QOBJ_TYPE(vrf) |
50 | ||
d62a17ae | 51 | static __inline int vrf_id_compare(const struct vrf *, const struct vrf *); |
52 | static __inline int vrf_name_compare(const struct vrf *, const struct vrf *); | |
1a1a7065 | 53 | |
d62a17ae | 54 | RB_GENERATE(vrf_id_head, vrf, id_entry, vrf_id_compare); |
55 | RB_GENERATE(vrf_name_head, vrf, name_entry, vrf_name_compare); | |
1a1a7065 | 56 | |
d62a17ae | 57 | struct vrf_id_head vrfs_by_id = RB_INITIALIZER(&vrfs_by_id); |
58 | struct vrf_name_head vrfs_by_name = RB_INITIALIZER(&vrfs_by_name); | |
1a1a7065 | 59 | |
78dd30b2 | 60 | static int vrf_backend; |
72261ecd | 61 | static int vrf_backend_configured; |
3bc34908 | 62 | static struct zebra_privs_t *vrf_daemon_privs; |
c200f5e1 | 63 | static char vrf_default_name[VRF_NAMSIZ] = VRF_DEFAULT_NAME_INTERNAL; |
78dd30b2 | 64 | |
19dc275e DS |
65 | /* |
66 | * Turn on/off debug code | |
67 | * for vrf. | |
68 | */ | |
c17faa4b | 69 | static int debug_vrf = 0; |
b72ede27 | 70 | |
b72ede27 | 71 | /* Holding VRF hooks */ |
1b3e9a21 | 72 | static struct vrf_master { |
d62a17ae | 73 | int (*vrf_new_hook)(struct vrf *); |
74 | int (*vrf_delete_hook)(struct vrf *); | |
75 | int (*vrf_enable_hook)(struct vrf *); | |
76 | int (*vrf_disable_hook)(struct vrf *); | |
ecbc5a37 | 77 | int (*vrf_update_name_hook)(struct vrf *vrf); |
d62a17ae | 78 | } vrf_master = { |
79 | 0, | |
80 | }; | |
b72ede27 | 81 | |
d62a17ae | 82 | static int vrf_is_enabled(struct vrf *vrf); |
e5bf3e1e | 83 | |
216b18ef | 84 | /* VRF list existance check by name. */ |
d62a17ae | 85 | struct vrf *vrf_lookup_by_name(const char *name) |
216b18ef | 86 | { |
d62a17ae | 87 | struct vrf vrf; |
88 | strlcpy(vrf.name, name, sizeof(vrf.name)); | |
89 | return (RB_FIND(vrf_name_head, &vrfs_by_name, &vrf)); | |
216b18ef | 90 | } |
216b18ef | 91 | |
d62a17ae | 92 | static __inline int vrf_id_compare(const struct vrf *a, const struct vrf *b) |
b72ede27 | 93 | { |
d62a17ae | 94 | return (a->vrf_id - b->vrf_id); |
216b18ef DS |
95 | } |
96 | ||
d62a17ae | 97 | static int vrf_name_compare(const struct vrf *a, const struct vrf *b) |
b72ede27 | 98 | { |
d62a17ae | 99 | return strcmp(a->name, b->name); |
b72ede27 FL |
100 | } |
101 | ||
e26aedbe PG |
102 | /* if ns_id is different and not VRF_UNKNOWN, |
103 | * then update vrf identifier, and enable VRF | |
104 | */ | |
105 | static void vrf_update_vrf_id(ns_id_t ns_id, void *opaqueptr) | |
106 | { | |
107 | ns_id_t vrf_id = (vrf_id_t)ns_id; | |
108 | vrf_id_t old_vrf_id; | |
109 | struct vrf *vrf = (struct vrf *)opaqueptr; | |
110 | ||
111 | if (!vrf) | |
112 | return; | |
113 | old_vrf_id = vrf->vrf_id; | |
114 | if (vrf_id == vrf->vrf_id) | |
115 | return; | |
116 | if (vrf->vrf_id != VRF_UNKNOWN) | |
117 | RB_REMOVE(vrf_id_head, &vrfs_by_id, vrf); | |
118 | vrf->vrf_id = vrf_id; | |
119 | RB_INSERT(vrf_id_head, &vrfs_by_id, vrf); | |
120 | if (old_vrf_id == VRF_UNKNOWN) | |
c4efd0f4 | 121 | vrf_enable(vrf); |
e26aedbe PG |
122 | } |
123 | ||
ce1be369 PG |
124 | int vrf_switch_to_netns(vrf_id_t vrf_id) |
125 | { | |
126 | char *name; | |
127 | struct vrf *vrf = vrf_lookup_by_id(vrf_id); | |
128 | ||
ce1be369 | 129 | /* VRF is default VRF. silently ignore */ |
e26aedbe | 130 | if (!vrf || vrf->vrf_id == VRF_DEFAULT) |
9dff1132 | 131 | return 1; /* 1 = default */ |
e26aedbe PG |
132 | /* VRF has no NETNS backend. silently ignore */ |
133 | if (vrf->data.l.netns_name[0] == '\0') | |
9dff1132 | 134 | return 2; /* 2 = no netns */ |
ce1be369 PG |
135 | name = ns_netns_pathname(NULL, vrf->data.l.netns_name); |
136 | if (debug_vrf) | |
137 | zlog_debug("VRF_SWITCH: %s(%u)", name, vrf->vrf_id); | |
138 | return ns_switch_to_netns(name); | |
139 | } | |
140 | ||
141 | int vrf_switchback_to_initial(void) | |
142 | { | |
143 | int ret = ns_switchback_to_initial(); | |
144 | ||
145 | if (ret == 0 && debug_vrf) | |
146 | zlog_debug("VRF_SWITCHBACK"); | |
147 | return ret; | |
148 | } | |
149 | ||
216b18ef | 150 | /* Get a VRF. If not found, create one. |
34f8e6af DS |
151 | * Arg: |
152 | * name - The name of the vrf. May be NULL if unknown. | |
153 | * vrf_id - The vrf_id of the vrf. May be VRF_UNKNOWN if unknown | |
216b18ef | 154 | * Description: Please note that this routine can be called with just the name |
34f8e6af DS |
155 | * and 0 vrf-id |
156 | */ | |
d62a17ae | 157 | struct vrf *vrf_get(vrf_id_t vrf_id, const char *name) |
158 | { | |
159 | struct vrf *vrf = NULL; | |
160 | int new = 0; | |
161 | ||
162 | if (debug_vrf) | |
996c9314 LB |
163 | zlog_debug("VRF_GET: %s(%u)", name == NULL ? "(NULL)" : name, |
164 | vrf_id); | |
d62a17ae | 165 | |
166 | /* Nothing to see, move along here */ | |
167 | if (!name && vrf_id == VRF_UNKNOWN) | |
168 | return NULL; | |
169 | ||
0c2bac38 PG |
170 | /* attempt to find already available VRF |
171 | */ | |
172 | if (name) | |
173 | vrf = vrf_lookup_by_name(name); | |
dd114702 PG |
174 | if (vrf && vrf_id != VRF_UNKNOWN |
175 | && vrf->vrf_id != VRF_UNKNOWN | |
176 | && vrf->vrf_id != vrf_id) { | |
177 | zlog_debug("VRF_GET: avoid %s creation(%u), same name exists (%u)", | |
178 | name, vrf_id, vrf->vrf_id); | |
179 | return NULL; | |
180 | } | |
d62a17ae | 181 | /* Try to find VRF both by ID and name */ |
0c2bac38 | 182 | if (!vrf && vrf_id != VRF_UNKNOWN) |
d62a17ae | 183 | vrf = vrf_lookup_by_id(vrf_id); |
d62a17ae | 184 | |
185 | if (vrf == NULL) { | |
186 | vrf = XCALLOC(MTYPE_VRF, sizeof(struct vrf)); | |
187 | vrf->vrf_id = VRF_UNKNOWN; | |
d62a17ae | 188 | QOBJ_REG(vrf, vrf); |
189 | new = 1; | |
190 | ||
191 | if (debug_vrf) | |
192 | zlog_debug("VRF(%u) %s is created.", vrf_id, | |
193 | (name) ? name : "(NULL)"); | |
194 | } | |
195 | ||
196 | /* Set identifier */ | |
197 | if (vrf_id != VRF_UNKNOWN && vrf->vrf_id == VRF_UNKNOWN) { | |
198 | vrf->vrf_id = vrf_id; | |
199 | RB_INSERT(vrf_id_head, &vrfs_by_id, vrf); | |
200 | } | |
201 | ||
202 | /* Set name */ | |
203 | if (name && vrf->name[0] != '\0' && strcmp(name, vrf->name)) { | |
87272aff | 204 | /* update the vrf name */ |
d62a17ae | 205 | RB_REMOVE(vrf_name_head, &vrfs_by_name, vrf); |
87272aff PG |
206 | strlcpy(vrf->data.l.netns_name, |
207 | name, NS_NAMSIZ); | |
d62a17ae | 208 | strlcpy(vrf->name, name, sizeof(vrf->name)); |
209 | RB_INSERT(vrf_name_head, &vrfs_by_name, vrf); | |
87272aff PG |
210 | if (vrf->vrf_id == VRF_DEFAULT) |
211 | vrf_set_default_name(vrf->name, false); | |
d62a17ae | 212 | } else if (name && vrf->name[0] == '\0') { |
213 | strlcpy(vrf->name, name, sizeof(vrf->name)); | |
214 | RB_INSERT(vrf_name_head, &vrfs_by_name, vrf); | |
215 | } | |
d62a17ae | 216 | if (new &&vrf_master.vrf_new_hook) |
217 | (*vrf_master.vrf_new_hook)(vrf); | |
218 | ||
219 | return vrf; | |
b72ede27 FL |
220 | } |
221 | ||
84915b0a | 222 | /* Delete a VRF. This is called when the underlying VRF goes away, a |
223 | * pre-configured VRF is deleted or when shutting down (vrf_terminate()). | |
224 | */ | |
d62a17ae | 225 | void vrf_delete(struct vrf *vrf) |
b72ede27 | 226 | { |
d62a17ae | 227 | if (debug_vrf) |
228 | zlog_debug("VRF %u is to be deleted.", vrf->vrf_id); | |
b72ede27 | 229 | |
d62a17ae | 230 | if (vrf_is_enabled(vrf)) |
231 | vrf_disable(vrf); | |
e5bf3e1e | 232 | |
84915b0a | 233 | /* If the VRF is user configured, it'll stick around, just remove |
234 | * the ID mapping. Interfaces assigned to this VRF should've been | |
235 | * removed already as part of the VRF going down. | |
236 | */ | |
237 | if (vrf_is_user_cfged(vrf)) { | |
238 | if (vrf->vrf_id != VRF_UNKNOWN) { | |
239 | /* Delete any VRF interfaces - should be only | |
240 | * the VRF itself, other interfaces should've | |
241 | * been moved out of the VRF. | |
242 | */ | |
243 | if_terminate(vrf); | |
244 | RB_REMOVE(vrf_id_head, &vrfs_by_id, vrf); | |
245 | vrf->vrf_id = VRF_UNKNOWN; | |
246 | } | |
247 | return; | |
248 | } | |
249 | ||
d62a17ae | 250 | if (vrf_master.vrf_delete_hook) |
251 | (*vrf_master.vrf_delete_hook)(vrf); | |
216b18ef | 252 | |
d62a17ae | 253 | QOBJ_UNREG(vrf); |
f4e14fdb | 254 | if_terminate(vrf); |
b72ede27 | 255 | |
d62a17ae | 256 | if (vrf->vrf_id != VRF_UNKNOWN) |
257 | RB_REMOVE(vrf_id_head, &vrfs_by_id, vrf); | |
258 | if (vrf->name[0] != '\0') | |
259 | RB_REMOVE(vrf_name_head, &vrfs_by_name, vrf); | |
b72ede27 | 260 | |
d62a17ae | 261 | XFREE(MTYPE_VRF, vrf); |
b72ede27 FL |
262 | } |
263 | ||
264 | /* Look up a VRF by identifier. */ | |
d62a17ae | 265 | struct vrf *vrf_lookup_by_id(vrf_id_t vrf_id) |
b72ede27 | 266 | { |
d62a17ae | 267 | struct vrf vrf; |
268 | vrf.vrf_id = vrf_id; | |
269 | return (RB_FIND(vrf_id_head, &vrfs_by_id, &vrf)); | |
b72ede27 FL |
270 | } |
271 | ||
e5bf3e1e FL |
272 | /* |
273 | * Enable a VRF - that is, let the VRF be ready to use. | |
274 | * The VRF_ENABLE_HOOK callback will be called to inform | |
275 | * that they can allocate resources in this VRF. | |
276 | * | |
277 | * RETURN: 1 - enabled successfully; otherwise, 0. | |
278 | */ | |
d62a17ae | 279 | int vrf_enable(struct vrf *vrf) |
e5bf3e1e | 280 | { |
d62a17ae | 281 | if (vrf_is_enabled(vrf)) |
282 | return 1; | |
05e8e11e | 283 | |
d62a17ae | 284 | if (debug_vrf) |
285 | zlog_debug("VRF %u is enabled.", vrf->vrf_id); | |
e5bf3e1e | 286 | |
d62a17ae | 287 | SET_FLAG(vrf->status, VRF_ACTIVE); |
e5bf3e1e | 288 | |
d62a17ae | 289 | if (vrf_master.vrf_enable_hook) |
290 | (*vrf_master.vrf_enable_hook)(vrf); | |
e5bf3e1e | 291 | |
98cbbaea DS |
292 | /* |
293 | * If we have any nexthop group entries that | |
294 | * are awaiting vrf initialization then | |
295 | * let's let people know about it | |
296 | */ | |
297 | nexthop_group_enable_vrf(vrf); | |
298 | ||
d62a17ae | 299 | return 1; |
e5bf3e1e FL |
300 | } |
301 | ||
302 | /* | |
303 | * Disable a VRF - that is, let the VRF be unusable. | |
304 | * The VRF_DELETE_HOOK callback will be called to inform | |
305 | * that they must release the resources in the VRF. | |
306 | */ | |
697d3ec7 | 307 | void vrf_disable(struct vrf *vrf) |
e5bf3e1e | 308 | { |
d62a17ae | 309 | if (!vrf_is_enabled(vrf)) |
310 | return; | |
a647bfa8 | 311 | |
d62a17ae | 312 | UNSET_FLAG(vrf->status, VRF_ACTIVE); |
e5bf3e1e | 313 | |
d62a17ae | 314 | if (debug_vrf) |
315 | zlog_debug("VRF %u is to be disabled.", vrf->vrf_id); | |
e5bf3e1e | 316 | |
d62a17ae | 317 | /* Till now, nothing to be done for the default VRF. */ |
318 | // Pending: see why this statement. | |
e74f14fc | 319 | |
0cbee799 DS |
320 | |
321 | /* | |
322 | * When the vrf is disabled let's | |
323 | * handle all nexthop-groups associated | |
324 | * with this vrf | |
325 | */ | |
326 | nexthop_group_disable_vrf(vrf); | |
327 | ||
d62a17ae | 328 | if (vrf_master.vrf_disable_hook) |
329 | (*vrf_master.vrf_disable_hook)(vrf); | |
e5bf3e1e FL |
330 | } |
331 | ||
b7cfce93 MK |
332 | const char *vrf_id_to_name(vrf_id_t vrf_id) |
333 | { | |
334 | struct vrf *vrf; | |
335 | ||
336 | vrf = vrf_lookup_by_id(vrf_id); | |
bd47f3a3 | 337 | return VRF_LOGNAME(vrf); |
b7cfce93 MK |
338 | } |
339 | ||
d62a17ae | 340 | vrf_id_t vrf_name_to_id(const char *name) |
216b18ef | 341 | { |
d62a17ae | 342 | struct vrf *vrf; |
343 | vrf_id_t vrf_id = VRF_DEFAULT; // Pending: need a way to return invalid | |
344 | // id/ routine not used. | |
216b18ef | 345 | |
2569910b PG |
346 | if (!name) |
347 | return vrf_id; | |
d62a17ae | 348 | vrf = vrf_lookup_by_name(name); |
349 | if (vrf) | |
350 | vrf_id = vrf->vrf_id; | |
216b18ef | 351 | |
d62a17ae | 352 | return vrf_id; |
216b18ef DS |
353 | } |
354 | ||
b72ede27 | 355 | /* Get the data pointer of the specified VRF. If not found, create one. */ |
d62a17ae | 356 | void *vrf_info_get(vrf_id_t vrf_id) |
b72ede27 | 357 | { |
d62a17ae | 358 | struct vrf *vrf = vrf_get(vrf_id, NULL); |
359 | return vrf->info; | |
b72ede27 FL |
360 | } |
361 | ||
362 | /* Look up the data pointer of the specified VRF. */ | |
d62a17ae | 363 | void *vrf_info_lookup(vrf_id_t vrf_id) |
b72ede27 | 364 | { |
d62a17ae | 365 | struct vrf *vrf = vrf_lookup_by_id(vrf_id); |
366 | return vrf ? vrf->info : NULL; | |
b72ede27 FL |
367 | } |
368 | ||
7076bb2f | 369 | /* |
4a8bf858 | 370 | * VRF hash for storing set or not. |
7076bb2f | 371 | */ |
4a8bf858 DS |
372 | struct vrf_bit_set { |
373 | vrf_id_t vrf_id; | |
374 | bool set; | |
375 | }; | |
7076bb2f | 376 | |
d8b87afe | 377 | static unsigned int vrf_hash_bitmap_key(const void *data) |
4a8bf858 | 378 | { |
d8b87afe | 379 | const struct vrf_bit_set *bit = data; |
d62a17ae | 380 | |
4a8bf858 DS |
381 | return bit->vrf_id; |
382 | } | |
d62a17ae | 383 | |
74df8d6d | 384 | static bool vrf_hash_bitmap_cmp(const void *a, const void *b) |
4a8bf858 DS |
385 | { |
386 | const struct vrf_bit_set *bit1 = a; | |
387 | const struct vrf_bit_set *bit2 = b; | |
d62a17ae | 388 | |
4a8bf858 DS |
389 | return bit1->vrf_id == bit2->vrf_id; |
390 | } | |
391 | ||
392 | static void *vrf_hash_bitmap_alloc(void *data) | |
393 | { | |
394 | struct vrf_bit_set *copy = data; | |
395 | struct vrf_bit_set *bit; | |
396 | ||
397 | bit = XMALLOC(MTYPE_VRF_BITMAP, sizeof(*bit)); | |
398 | bit->vrf_id = copy->vrf_id; | |
399 | ||
400 | return bit; | |
401 | } | |
402 | ||
403 | static void vrf_hash_bitmap_free(void *data) | |
404 | { | |
405 | struct vrf_bit_set *bit = data; | |
406 | ||
407 | XFREE(MTYPE_VRF_BITMAP, bit); | |
408 | } | |
7076bb2f | 409 | |
d62a17ae | 410 | vrf_bitmap_t vrf_bitmap_init(void) |
7076bb2f | 411 | { |
4a8bf858 DS |
412 | return hash_create_size(32, vrf_hash_bitmap_key, vrf_hash_bitmap_cmp, |
413 | "VRF BIT HASH"); | |
7076bb2f FL |
414 | } |
415 | ||
d62a17ae | 416 | void vrf_bitmap_free(vrf_bitmap_t bmap) |
7076bb2f | 417 | { |
4a8bf858 | 418 | struct hash *vrf_hash = bmap; |
7076bb2f | 419 | |
4a8bf858 | 420 | if (vrf_hash == NULL) |
d62a17ae | 421 | return; |
7076bb2f | 422 | |
4a8bf858 DS |
423 | hash_clean(vrf_hash, vrf_hash_bitmap_free); |
424 | hash_free(vrf_hash); | |
7076bb2f FL |
425 | } |
426 | ||
d62a17ae | 427 | void vrf_bitmap_set(vrf_bitmap_t bmap, vrf_id_t vrf_id) |
7076bb2f | 428 | { |
4a8bf858 DS |
429 | struct vrf_bit_set lookup = { .vrf_id = vrf_id }; |
430 | struct hash *vrf_hash = bmap; | |
431 | struct vrf_bit_set *bit; | |
7076bb2f | 432 | |
4a8bf858 | 433 | if (vrf_hash == NULL || vrf_id == VRF_UNKNOWN) |
d62a17ae | 434 | return; |
7076bb2f | 435 | |
4a8bf858 DS |
436 | bit = hash_get(vrf_hash, &lookup, vrf_hash_bitmap_alloc); |
437 | bit->set = true; | |
7076bb2f FL |
438 | } |
439 | ||
d62a17ae | 440 | void vrf_bitmap_unset(vrf_bitmap_t bmap, vrf_id_t vrf_id) |
7076bb2f | 441 | { |
4a8bf858 DS |
442 | struct vrf_bit_set lookup = { .vrf_id = vrf_id }; |
443 | struct hash *vrf_hash = bmap; | |
444 | struct vrf_bit_set *bit; | |
7076bb2f | 445 | |
4a8bf858 | 446 | if (vrf_hash == NULL || vrf_id == VRF_UNKNOWN) |
d62a17ae | 447 | return; |
7076bb2f | 448 | |
4a8bf858 DS |
449 | bit = hash_get(vrf_hash, &lookup, vrf_hash_bitmap_alloc); |
450 | bit->set = false; | |
7076bb2f FL |
451 | } |
452 | ||
d62a17ae | 453 | int vrf_bitmap_check(vrf_bitmap_t bmap, vrf_id_t vrf_id) |
7076bb2f | 454 | { |
4a8bf858 DS |
455 | struct vrf_bit_set lookup = { .vrf_id = vrf_id }; |
456 | struct hash *vrf_hash = bmap; | |
457 | struct vrf_bit_set *bit; | |
7076bb2f | 458 | |
4a8bf858 | 459 | if (vrf_hash == NULL || vrf_id == VRF_UNKNOWN) |
d62a17ae | 460 | return 0; |
7076bb2f | 461 | |
4a8bf858 DS |
462 | bit = hash_lookup(vrf_hash, &lookup); |
463 | if (bit) | |
464 | return bit->set; | |
465 | ||
466 | return 0; | |
7076bb2f FL |
467 | } |
468 | ||
d62a17ae | 469 | static void vrf_autocomplete(vector comps, struct cmd_token *token) |
d617d5fe | 470 | { |
d62a17ae | 471 | struct vrf *vrf = NULL; |
d617d5fe | 472 | |
723001fc PG |
473 | RB_FOREACH (vrf, vrf_name_head, &vrfs_by_name) |
474 | vector_set(comps, XSTRDUP(MTYPE_COMPLETION, vrf->name)); | |
d617d5fe DS |
475 | } |
476 | ||
477 | static const struct cmd_variable_handler vrf_var_handlers[] = { | |
d62a17ae | 478 | { |
479 | .varname = "vrf", | |
480 | .completions = vrf_autocomplete, | |
481 | }, | |
e429a2a0 IR |
482 | { |
483 | .varname = "vrf_name", | |
484 | .completions = vrf_autocomplete, | |
485 | }, | |
486 | { | |
487 | .varname = "nexthop_vrf", | |
488 | .completions = vrf_autocomplete, | |
489 | }, | |
d62a17ae | 490 | {.completions = NULL}, |
d617d5fe DS |
491 | }; |
492 | ||
b72ede27 | 493 | /* Initialize VRF module. */ |
d62a17ae | 494 | void vrf_init(int (*create)(struct vrf *), int (*enable)(struct vrf *), |
d01b92fd | 495 | int (*disable)(struct vrf *), int (*destroy)(struct vrf *), |
ecbc5a37 | 496 | int ((*update)(struct vrf *))) |
d62a17ae | 497 | { |
498 | struct vrf *default_vrf; | |
499 | ||
e26aedbe PG |
500 | /* initialise NS, in case VRF backend if NETNS */ |
501 | ns_init(); | |
d62a17ae | 502 | if (debug_vrf) |
15569c58 | 503 | zlog_debug("%s: Initializing VRF subsystem", __func__); |
d62a17ae | 504 | |
505 | vrf_master.vrf_new_hook = create; | |
506 | vrf_master.vrf_enable_hook = enable; | |
507 | vrf_master.vrf_disable_hook = disable; | |
d01b92fd | 508 | vrf_master.vrf_delete_hook = destroy; |
ecbc5a37 | 509 | vrf_master.vrf_update_name_hook = update; |
d62a17ae | 510 | |
511 | /* The default VRF always exists. */ | |
eb6934d5 | 512 | default_vrf = vrf_get(VRF_DEFAULT, VRF_DEFAULT_NAME); |
d62a17ae | 513 | if (!default_vrf) { |
450971aa | 514 | flog_err(EC_LIB_VRF_START, |
1c50c1c0 | 515 | "vrf_init: failed to create the default VRF!"); |
d62a17ae | 516 | exit(1); |
517 | } | |
20c87e98 TC |
518 | if (vrf_is_backend_netns()) { |
519 | struct ns *ns; | |
520 | ||
fdafe17e | 521 | strlcpy(default_vrf->data.l.netns_name, |
eb6934d5 | 522 | VRF_DEFAULT_NAME, NS_NAMSIZ); |
20c87e98 | 523 | ns = ns_lookup(ns_get_default_id()); |
c3568c4d TC |
524 | ns->vrf_ctxt = default_vrf; |
525 | default_vrf->ns_ctxt = ns; | |
20c87e98 | 526 | } |
d62a17ae | 527 | |
528 | /* Enable the default VRF. */ | |
529 | if (!vrf_enable(default_vrf)) { | |
450971aa | 530 | flog_err(EC_LIB_VRF_START, |
1c50c1c0 | 531 | "vrf_init: failed to enable the default VRF!"); |
d62a17ae | 532 | exit(1); |
533 | } | |
534 | ||
535 | cmd_variable_handler_register(vrf_var_handlers); | |
b72ede27 FL |
536 | } |
537 | ||
538 | /* Terminate VRF module. */ | |
d62a17ae | 539 | void vrf_terminate(void) |
b72ede27 | 540 | { |
d62a17ae | 541 | struct vrf *vrf; |
b72ede27 | 542 | |
d62a17ae | 543 | if (debug_vrf) |
15569c58 | 544 | zlog_debug("%s: Shutting down vrf subsystem", __func__); |
19dc275e | 545 | |
55cd0f61 DS |
546 | while (!RB_EMPTY(vrf_id_head, &vrfs_by_id)) { |
547 | vrf = RB_ROOT(vrf_id_head, &vrfs_by_id); | |
548 | ||
65c3a7c4 | 549 | /* Clear configured flag and invoke delete. */ |
550 | UNSET_FLAG(vrf->status, VRF_CONFIGURED); | |
d62a17ae | 551 | vrf_delete(vrf); |
65c3a7c4 | 552 | } |
55cd0f61 DS |
553 | |
554 | while (!RB_EMPTY(vrf_name_head, &vrfs_by_name)) { | |
555 | vrf = RB_ROOT(vrf_name_head, &vrfs_by_name); | |
556 | ||
65c3a7c4 | 557 | /* Clear configured flag and invoke delete. */ |
558 | UNSET_FLAG(vrf->status, VRF_CONFIGURED); | |
d62a17ae | 559 | vrf_delete(vrf); |
65c3a7c4 | 560 | } |
b72ede27 FL |
561 | } |
562 | ||
0f4977c6 | 563 | int vrf_socket(int domain, int type, int protocol, vrf_id_t vrf_id, |
02fe07c7 | 564 | const char *interfacename) |
e5bf3e1e | 565 | { |
2e0d2b3d | 566 | int ret, save_errno, ret2; |
e5bf3e1e | 567 | |
2e0d2b3d PG |
568 | ret = vrf_switch_to_netns(vrf_id); |
569 | if (ret < 0) | |
450971aa | 570 | flog_err_sys(EC_LIB_SOCKET, "%s: Can't switch to VRF %u (%s)", |
09c866e3 | 571 | __func__, vrf_id, safe_strerror(errno)); |
b66d022e | 572 | |
d62a17ae | 573 | ret = socket(domain, type, protocol); |
2e0d2b3d PG |
574 | save_errno = errno; |
575 | ret2 = vrf_switchback_to_initial(); | |
576 | if (ret2 < 0) | |
450971aa | 577 | flog_err_sys(EC_LIB_SOCKET, |
09c866e3 QY |
578 | "%s: Can't switchback from VRF %u (%s)", __func__, |
579 | vrf_id, safe_strerror(errno)); | |
2e0d2b3d | 580 | errno = save_errno; |
0f4977c6 PG |
581 | if (ret <= 0) |
582 | return ret; | |
583 | ret2 = vrf_bind(vrf_id, ret, interfacename); | |
584 | if (ret2 < 0) { | |
585 | close(ret); | |
586 | ret = ret2; | |
587 | } | |
d62a17ae | 588 | return ret; |
e5bf3e1e FL |
589 | } |
590 | ||
78dd30b2 PG |
591 | int vrf_is_backend_netns(void) |
592 | { | |
593 | return (vrf_backend == VRF_BACKEND_NETNS); | |
594 | } | |
595 | ||
596 | int vrf_get_backend(void) | |
597 | { | |
72261ecd PG |
598 | if (!vrf_backend_configured) |
599 | return VRF_BACKEND_UNKNOWN; | |
78dd30b2 PG |
600 | return vrf_backend; |
601 | } | |
602 | ||
7239d3d9 | 603 | int vrf_configure_backend(enum vrf_backend_type backend) |
78dd30b2 | 604 | { |
f7d45925 QY |
605 | /* Work around issue in old gcc */ |
606 | switch (backend) { | |
607 | case VRF_BACKEND_UNKNOWN: | |
608 | case VRF_BACKEND_NETNS: | |
609 | case VRF_BACKEND_VRF_LITE: | |
610 | break; | |
611 | default: | |
7239d3d9 | 612 | return -1; |
f7d45925 | 613 | } |
7239d3d9 QY |
614 | |
615 | vrf_backend = backend; | |
72261ecd | 616 | vrf_backend_configured = 1; |
7239d3d9 QY |
617 | |
618 | return 0; | |
78dd30b2 PG |
619 | } |
620 | ||
03aff2d8 PG |
621 | int vrf_handler_create(struct vty *vty, const char *vrfname, |
622 | struct vrf **vrf) | |
f30c50b9 | 623 | { |
d62a17ae | 624 | struct vrf *vrfp; |
8b4cb7a6 CS |
625 | char xpath_list[XPATH_MAXLEN]; |
626 | int ret; | |
f30c50b9 | 627 | |
d62a17ae | 628 | if (strlen(vrfname) > VRF_NAMSIZ) { |
697d3ec7 PG |
629 | if (vty) |
630 | vty_out(vty, | |
996c9314 LB |
631 | "%% VRF name %s invalid: length exceeds %d bytes\n", |
632 | vrfname, VRF_NAMSIZ); | |
697d3ec7 | 633 | else |
0351a28f | 634 | flog_warn( |
450971aa | 635 | EC_LIB_VRF_LENGTH, |
996c9314 LB |
636 | "%% VRF name %s invalid: length exceeds %d bytes\n", |
637 | vrfname, VRF_NAMSIZ); | |
d62a17ae | 638 | return CMD_WARNING_CONFIG_FAILED; |
639 | } | |
f30c50b9 | 640 | |
8b4cb7a6 CS |
641 | if (vty) { |
642 | snprintf(xpath_list, sizeof(xpath_list), | |
643 | "/frr-vrf:lib/vrf[name='%s']", vrfname); | |
644 | ||
645 | nb_cli_enqueue_change(vty, xpath_list, NB_OP_CREATE, NULL); | |
646 | ret = nb_cli_apply_changes(vty, xpath_list); | |
647 | if (ret == CMD_SUCCESS) { | |
648 | VTY_PUSH_XPATH(VRF_NODE, xpath_list); | |
b855e95f | 649 | nb_cli_pending_commit_check(vty); |
8b4cb7a6 CS |
650 | vrfp = vrf_lookup_by_name(vrfname); |
651 | if (vrfp) | |
652 | VTY_PUSH_CONTEXT(VRF_NODE, vrfp); | |
653 | } | |
654 | } else { | |
655 | vrfp = vrf_get(VRF_UNKNOWN, vrfname); | |
f30c50b9 | 656 | |
8b4cb7a6 CS |
657 | if (vrf) |
658 | *vrf = vrfp; | |
659 | } | |
d62a17ae | 660 | return CMD_SUCCESS; |
f30c50b9 RW |
661 | } |
662 | ||
996c9314 | 663 | int vrf_netns_handler_create(struct vty *vty, struct vrf *vrf, char *pathname, |
bd23c840 | 664 | ns_id_t ns_id, ns_id_t internal_ns_id) |
e26aedbe PG |
665 | { |
666 | struct ns *ns = NULL; | |
667 | ||
668 | if (!vrf) | |
669 | return CMD_WARNING_CONFIG_FAILED; | |
670 | if (vrf->vrf_id != VRF_UNKNOWN && vrf->ns_ctxt == NULL) { | |
671 | if (vty) | |
672 | vty_out(vty, | |
673 | "VRF %u is already configured with VRF %s\n", | |
674 | vrf->vrf_id, vrf->name); | |
675 | else | |
9165c5f5 | 676 | zlog_info("VRF %u is already configured with VRF %s", |
e26aedbe PG |
677 | vrf->vrf_id, vrf->name); |
678 | return CMD_WARNING_CONFIG_FAILED; | |
679 | } | |
680 | if (vrf->ns_ctxt != NULL) { | |
996c9314 | 681 | ns = (struct ns *)vrf->ns_ctxt; |
2e1cc436 | 682 | if (!strcmp(ns->name, pathname)) { |
e26aedbe PG |
683 | if (vty) |
684 | vty_out(vty, | |
996c9314 LB |
685 | "VRF %u already configured with NETNS %s\n", |
686 | vrf->vrf_id, ns->name); | |
e26aedbe | 687 | else |
0351a28f | 688 | zlog_info( |
ade6974d QY |
689 | "VRF %u already configured with NETNS %s", |
690 | vrf->vrf_id, ns->name); | |
e26aedbe PG |
691 | return CMD_WARNING_CONFIG_FAILED; |
692 | } | |
693 | } | |
694 | ns = ns_lookup_name(pathname); | |
695 | if (ns && ns->vrf_ctxt) { | |
696 | struct vrf *vrf2 = (struct vrf *)ns->vrf_ctxt; | |
697 | ||
698 | if (vrf2 == vrf) | |
699 | return CMD_SUCCESS; | |
700 | if (vty) | |
996c9314 | 701 | vty_out(vty, |
3efd0893 | 702 | "NS %s is already configured with VRF %u(%s)\n", |
996c9314 | 703 | ns->name, vrf2->vrf_id, vrf2->name); |
e26aedbe | 704 | else |
0351a28f | 705 | zlog_info("NS %s is already configured with VRF %u(%s)", |
e26aedbe PG |
706 | ns->name, vrf2->vrf_id, vrf2->name); |
707 | return CMD_WARNING_CONFIG_FAILED; | |
708 | } | |
709 | ns = ns_get_created(ns, pathname, ns_id); | |
03aff2d8 | 710 | ns->internal_ns_id = internal_ns_id; |
e26aedbe PG |
711 | ns->vrf_ctxt = (void *)vrf; |
712 | vrf->ns_ctxt = (void *)ns; | |
713 | /* update VRF netns NAME */ | |
2e1cc436 | 714 | strlcpy(vrf->data.l.netns_name, basename(pathname), NS_NAMSIZ); |
e26aedbe PG |
715 | |
716 | if (!ns_enable(ns, vrf_update_vrf_id)) { | |
717 | if (vty) | |
718 | vty_out(vty, "Can not associate NS %u with NETNS %s\n", | |
996c9314 | 719 | ns->ns_id, ns->name); |
e26aedbe | 720 | else |
0351a28f | 721 | zlog_info("Can not associate NS %u with NETNS %s", |
e26aedbe PG |
722 | ns->ns_id, ns->name); |
723 | return CMD_WARNING_CONFIG_FAILED; | |
724 | } | |
725 | ||
726 | return CMD_SUCCESS; | |
727 | } | |
728 | ||
697d3ec7 | 729 | /* vrf CLI commands */ |
16d6ea59 QY |
730 | DEFUN_NOSH(vrf_exit, |
731 | vrf_exit_cmd, | |
732 | "exit-vrf", | |
733 | "Exit current mode and down to previous mode\n") | |
734 | { | |
735 | /* We have to set vrf context to default vrf */ | |
736 | VTY_PUSH_CONTEXT(VRF_NODE, vrf_get(VRF_DEFAULT, VRF_DEFAULT_NAME)); | |
799a81df | 737 | cmd_exit(vty); |
16d6ea59 QY |
738 | return CMD_SUCCESS; |
739 | } | |
740 | ||
ca77b518 | 741 | DEFUN_YANG_NOSH (vrf, |
697d3ec7 PG |
742 | vrf_cmd, |
743 | "vrf NAME", | |
744 | "Select a VRF to configure\n" | |
745 | "VRF's name\n") | |
746 | { | |
747 | int idx_name = 1; | |
748 | const char *vrfname = argv[idx_name]->arg; | |
749 | ||
750 | return vrf_handler_create(vty, vrfname, NULL); | |
751 | } | |
752 | ||
ca77b518 | 753 | DEFUN_YANG (no_vrf, |
34c46274 RW |
754 | no_vrf_cmd, |
755 | "no vrf NAME", | |
756 | NO_STR | |
757 | "Delete a pseudo VRF's configuration\n" | |
758 | "VRF's name\n") | |
f30c50b9 | 759 | { |
d62a17ae | 760 | const char *vrfname = argv[2]->arg; |
8b4cb7a6 | 761 | char xpath_list[XPATH_MAXLEN]; |
53dc2b05 | 762 | |
d62a17ae | 763 | struct vrf *vrfp; |
f30c50b9 | 764 | |
d62a17ae | 765 | vrfp = vrf_lookup_by_name(vrfname); |
f30c50b9 | 766 | |
cd980d03 IR |
767 | if (vrfp == NULL) |
768 | return CMD_SUCCESS; | |
f30c50b9 | 769 | |
d62a17ae | 770 | if (CHECK_FLAG(vrfp->status, VRF_ACTIVE)) { |
771 | vty_out(vty, "%% Only inactive VRFs can be deleted\n"); | |
772 | return CMD_WARNING_CONFIG_FAILED; | |
773 | } | |
f30c50b9 | 774 | |
8b4cb7a6 CS |
775 | snprintf(xpath_list, sizeof(xpath_list), "/frr-vrf:lib/vrf[name='%s']", |
776 | vrfname); | |
f30c50b9 | 777 | |
8b4cb7a6 CS |
778 | nb_cli_enqueue_change(vty, xpath_list, NB_OP_DESTROY, NULL); |
779 | return nb_cli_apply_changes(vty, xpath_list); | |
f30c50b9 RW |
780 | } |
781 | ||
53dc2b05 | 782 | |
62b346ee | 783 | static struct cmd_node vrf_node = { |
f4b8291f | 784 | .name = "vrf", |
62b346ee | 785 | .node = VRF_NODE, |
24389580 | 786 | .parent_node = CONFIG_NODE, |
62b346ee | 787 | .prompt = "%s(config-vrf)# ", |
62b346ee | 788 | }; |
7ddcfca4 | 789 | |
34c46274 | 790 | DEFUN_NOSH (vrf_netns, |
4a541e8c PG |
791 | vrf_netns_cmd, |
792 | "netns NAME", | |
793 | "Attach VRF to a Namespace\n" | |
794 | "The file name in " NS_RUN_DIR ", or a full pathname\n") | |
e26aedbe | 795 | { |
3bc34908 | 796 | int idx_name = 1, ret; |
e26aedbe PG |
797 | char *pathname = ns_netns_pathname(vty, argv[idx_name]->arg); |
798 | ||
799 | VTY_DECLVAR_CONTEXT(vrf, vrf); | |
800 | ||
801 | if (!pathname) | |
802 | return CMD_WARNING_CONFIG_FAILED; | |
3bc34908 | 803 | |
0cf6db21 | 804 | frr_with_privs(vrf_daemon_privs) { |
6bb30c2c | 805 | ret = vrf_netns_handler_create(vty, vrf, pathname, |
bd23c840 | 806 | NS_UNKNOWN, NS_UNKNOWN); |
6bb30c2c | 807 | } |
3bc34908 | 808 | return ret; |
e26aedbe PG |
809 | } |
810 | ||
34c46274 | 811 | DEFUN_NOSH (no_vrf_netns, |
e26aedbe PG |
812 | no_vrf_netns_cmd, |
813 | "no netns [NAME]", | |
814 | NO_STR | |
815 | "Detach VRF from a Namespace\n" | |
816 | "The file name in " NS_RUN_DIR ", or a full pathname\n") | |
817 | { | |
818 | struct ns *ns = NULL; | |
819 | ||
820 | VTY_DECLVAR_CONTEXT(vrf, vrf); | |
821 | ||
822 | if (!vrf_is_backend_netns()) { | |
823 | vty_out(vty, "VRF backend is not Netns. Aborting\n"); | |
824 | return CMD_WARNING_CONFIG_FAILED; | |
825 | } | |
826 | if (!vrf->ns_ctxt) { | |
827 | vty_out(vty, "VRF %s(%u) is not configured with NetNS\n", | |
828 | vrf->name, vrf->vrf_id); | |
829 | return CMD_WARNING_CONFIG_FAILED; | |
830 | } | |
831 | ||
832 | ns = (struct ns *)vrf->ns_ctxt; | |
833 | ||
834 | ns->vrf_ctxt = NULL; | |
835 | vrf_disable(vrf); | |
836 | /* vrf ID from VRF is necessary for Zebra | |
837 | * so that propagate to other clients is done | |
838 | */ | |
839 | ns_delete(ns); | |
840 | vrf->ns_ctxt = NULL; | |
841 | return CMD_SUCCESS; | |
842 | } | |
843 | ||
19dc275e DS |
844 | /* |
845 | * Debug CLI for vrf's | |
846 | */ | |
847 | DEFUN (vrf_debug, | |
848 | vrf_debug_cmd, | |
849 | "debug vrf", | |
850 | DEBUG_STR | |
851 | "VRF Debugging\n") | |
852 | { | |
d62a17ae | 853 | debug_vrf = 1; |
19dc275e | 854 | |
d62a17ae | 855 | return CMD_SUCCESS; |
19dc275e DS |
856 | } |
857 | ||
858 | DEFUN (no_vrf_debug, | |
859 | no_vrf_debug_cmd, | |
860 | "no debug vrf", | |
861 | NO_STR | |
862 | DEBUG_STR | |
863 | "VRF Debugging\n") | |
864 | { | |
d62a17ae | 865 | debug_vrf = 0; |
19dc275e | 866 | |
d62a17ae | 867 | return CMD_SUCCESS; |
19dc275e DS |
868 | } |
869 | ||
d62a17ae | 870 | static int vrf_write_host(struct vty *vty) |
19dc275e | 871 | { |
d62a17ae | 872 | if (debug_vrf) |
873 | vty_out(vty, "debug vrf\n"); | |
19dc275e | 874 | |
d62a17ae | 875 | return 1; |
19dc275e DS |
876 | } |
877 | ||
612c2c15 | 878 | static int vrf_write_host(struct vty *vty); |
62b346ee | 879 | static struct cmd_node vrf_debug_node = { |
f4b8291f | 880 | .name = "vrf debug", |
62b346ee DL |
881 | .node = VRF_DEBUG_NODE, |
882 | .prompt = "", | |
612c2c15 | 883 | .config_write = vrf_write_host, |
62b346ee | 884 | }; |
19dc275e | 885 | |
d62a17ae | 886 | void vrf_install_commands(void) |
19dc275e | 887 | { |
612c2c15 | 888 | install_node(&vrf_debug_node); |
19dc275e | 889 | |
d62a17ae | 890 | install_element(CONFIG_NODE, &vrf_debug_cmd); |
891 | install_element(ENABLE_NODE, &vrf_debug_cmd); | |
892 | install_element(CONFIG_NODE, &no_vrf_debug_cmd); | |
893 | install_element(ENABLE_NODE, &no_vrf_debug_cmd); | |
19dc275e | 894 | } |
53dc2b05 | 895 | |
3bc34908 PG |
896 | void vrf_cmd_init(int (*writefunc)(struct vty *vty), |
897 | struct zebra_privs_t *daemon_privs) | |
7ddcfca4 | 898 | { |
d62a17ae | 899 | install_element(CONFIG_NODE, &vrf_cmd); |
900 | install_element(CONFIG_NODE, &no_vrf_cmd); | |
612c2c15 DL |
901 | vrf_node.config_write = writefunc; |
902 | install_node(&vrf_node); | |
d62a17ae | 903 | install_default(VRF_NODE); |
16d6ea59 | 904 | install_element(VRF_NODE, &vrf_exit_cmd); |
e26aedbe PG |
905 | if (vrf_is_backend_netns() && ns_have_netns()) { |
906 | /* Install NS commands. */ | |
3bc34908 | 907 | vrf_daemon_privs = daemon_privs; |
e26aedbe PG |
908 | install_element(VRF_NODE, &vrf_netns_cmd); |
909 | install_element(VRF_NODE, &no_vrf_netns_cmd); | |
910 | } | |
19dc275e | 911 | } |
ec31f30d | 912 | |
4fe52e76 | 913 | void vrf_set_default_name(const char *default_name, bool force) |
ec31f30d | 914 | { |
c200f5e1 | 915 | struct vrf *def_vrf; |
4fe52e76 | 916 | static bool def_vrf_forced; |
ec31f30d | 917 | |
c200f5e1 PG |
918 | def_vrf = vrf_lookup_by_id(VRF_DEFAULT); |
919 | assert(default_name); | |
4fe52e76 PG |
920 | if (def_vrf && !force && def_vrf_forced) { |
921 | zlog_debug("VRF: %s, avoid changing name to %s, previously forced (%u)", | |
922 | def_vrf->name, default_name, | |
923 | def_vrf->vrf_id); | |
924 | return; | |
925 | } | |
87272aff PG |
926 | if (strmatch(vrf_default_name, default_name)) |
927 | return; | |
c200f5e1 PG |
928 | snprintf(vrf_default_name, VRF_NAMSIZ, "%s", default_name); |
929 | if (def_vrf) { | |
4fe52e76 PG |
930 | if (force) |
931 | def_vrf_forced = true; | |
c200f5e1 PG |
932 | RB_REMOVE(vrf_name_head, &vrfs_by_name, def_vrf); |
933 | strlcpy(def_vrf->data.l.netns_name, | |
934 | vrf_default_name, NS_NAMSIZ); | |
935 | strlcpy(def_vrf->name, vrf_default_name, sizeof(def_vrf->name)); | |
936 | RB_INSERT(vrf_name_head, &vrfs_by_name, def_vrf); | |
ecbc5a37 PG |
937 | if (vrf_master.vrf_update_name_hook) |
938 | (*vrf_master.vrf_update_name_hook)(def_vrf); | |
c200f5e1 PG |
939 | } |
940 | } | |
941 | ||
942 | const char *vrf_get_default_name(void) | |
943 | { | |
944 | return vrf_default_name; | |
945 | } | |
946 | ||
947 | vrf_id_t vrf_get_default_id(void) | |
948 | { | |
03aff2d8 PG |
949 | /* backend netns is only known by zebra |
950 | * for other daemons, we return VRF_DEFAULT_INTERNAL | |
951 | */ | |
ec31f30d PG |
952 | if (vrf_is_backend_netns()) |
953 | return ns_get_default_id(); | |
954 | else | |
955 | return VRF_DEFAULT_INTERNAL; | |
956 | } | |
2e0d2b3d | 957 | |
02fe07c7 | 958 | int vrf_bind(vrf_id_t vrf_id, int fd, const char *name) |
0f4977c6 PG |
959 | { |
960 | int ret = 0; | |
91f854f6 | 961 | struct interface *ifp; |
0f4977c6 | 962 | |
a36898e7 | 963 | if (fd < 0 || name == NULL) |
0f4977c6 | 964 | return fd; |
91f854f6 PG |
965 | /* the device should exist |
966 | * otherwise we should return | |
967 | * case ifname = vrf in netns mode => return | |
968 | */ | |
a36898e7 | 969 | ifp = if_lookup_by_name(name, vrf_id); |
91f854f6 | 970 | if (!ifp) |
0f4977c6 PG |
971 | return fd; |
972 | #ifdef SO_BINDTODEVICE | |
c9c70dd1 | 973 | ret = setsockopt(fd, SOL_SOCKET, SO_BINDTODEVICE, name, strlen(name)+1); |
0f4977c6 | 974 | if (ret < 0) |
996c9314 LB |
975 | zlog_debug("bind to interface %s failed, errno=%d", name, |
976 | errno); | |
0f4977c6 PG |
977 | #endif /* SO_BINDTODEVICE */ |
978 | return ret; | |
979 | } | |
2e0d2b3d | 980 | int vrf_getaddrinfo(const char *node, const char *service, |
996c9314 LB |
981 | const struct addrinfo *hints, struct addrinfo **res, |
982 | vrf_id_t vrf_id) | |
2e0d2b3d PG |
983 | { |
984 | int ret, ret2, save_errno; | |
985 | ||
986 | ret = vrf_switch_to_netns(vrf_id); | |
987 | if (ret < 0) | |
450971aa | 988 | flog_err_sys(EC_LIB_SOCKET, "%s: Can't switch to VRF %u (%s)", |
09c866e3 | 989 | __func__, vrf_id, safe_strerror(errno)); |
2e0d2b3d PG |
990 | ret = getaddrinfo(node, service, hints, res); |
991 | save_errno = errno; | |
992 | ret2 = vrf_switchback_to_initial(); | |
993 | if (ret2 < 0) | |
450971aa | 994 | flog_err_sys(EC_LIB_SOCKET, |
09c866e3 QY |
995 | "%s: Can't switchback from VRF %u (%s)", __func__, |
996 | vrf_id, safe_strerror(errno)); | |
2e0d2b3d PG |
997 | errno = save_errno; |
998 | return ret; | |
999 | } | |
1000 | ||
516d7591 PG |
1001 | int vrf_ioctl(vrf_id_t vrf_id, int d, unsigned long request, char *params) |
1002 | { | |
1003 | int ret, saved_errno, rc; | |
1004 | ||
1005 | ret = vrf_switch_to_netns(vrf_id); | |
1006 | if (ret < 0) { | |
450971aa | 1007 | flog_err_sys(EC_LIB_SOCKET, "%s: Can't switch to VRF %u (%s)", |
09c866e3 | 1008 | __func__, vrf_id, safe_strerror(errno)); |
516d7591 PG |
1009 | return 0; |
1010 | } | |
1011 | rc = ioctl(d, request, params); | |
1012 | saved_errno = errno; | |
1013 | ret = vrf_switchback_to_initial(); | |
1014 | if (ret < 0) | |
450971aa | 1015 | flog_err_sys(EC_LIB_SOCKET, |
09c866e3 QY |
1016 | "%s: Can't switchback from VRF %u (%s)", __func__, |
1017 | vrf_id, safe_strerror(errno)); | |
516d7591 PG |
1018 | errno = saved_errno; |
1019 | return rc; | |
1020 | } | |
1021 | ||
0f4977c6 | 1022 | int vrf_sockunion_socket(const union sockunion *su, vrf_id_t vrf_id, |
02fe07c7 | 1023 | const char *interfacename) |
2e0d2b3d PG |
1024 | { |
1025 | int ret, save_errno, ret2; | |
1026 | ||
1027 | ret = vrf_switch_to_netns(vrf_id); | |
1028 | if (ret < 0) | |
450971aa | 1029 | flog_err_sys(EC_LIB_SOCKET, "%s: Can't switch to VRF %u (%s)", |
09c866e3 | 1030 | __func__, vrf_id, safe_strerror(errno)); |
2e0d2b3d PG |
1031 | ret = sockunion_socket(su); |
1032 | save_errno = errno; | |
1033 | ret2 = vrf_switchback_to_initial(); | |
1034 | if (ret2 < 0) | |
450971aa | 1035 | flog_err_sys(EC_LIB_SOCKET, |
09c866e3 QY |
1036 | "%s: Can't switchback from VRF %u (%s)", __func__, |
1037 | vrf_id, safe_strerror(errno)); | |
2e0d2b3d | 1038 | errno = save_errno; |
0f4977c6 PG |
1039 | |
1040 | if (ret <= 0) | |
1041 | return ret; | |
1042 | ret2 = vrf_bind(vrf_id, ret, interfacename); | |
1043 | if (ret2 < 0) { | |
1044 | close(ret); | |
1045 | ret = ret2; | |
1046 | } | |
2e0d2b3d PG |
1047 | return ret; |
1048 | } | |
0b014ea6 PG |
1049 | |
1050 | vrf_id_t vrf_generate_id(void) | |
1051 | { | |
1052 | static int vrf_id_local; | |
1053 | ||
1054 | return ++vrf_id_local; | |
1055 | } | |
bc867a5d CS |
1056 | |
1057 | /* ------- Northbound callbacks ------- */ | |
1058 | ||
1059 | /* | |
1060 | * XPath: /frr-vrf:lib/vrf | |
1061 | */ | |
60ee8be1 | 1062 | static int lib_vrf_create(struct nb_cb_create_args *args) |
bc867a5d CS |
1063 | { |
1064 | const char *vrfname; | |
1065 | struct vrf *vrfp; | |
1066 | ||
60ee8be1 | 1067 | vrfname = yang_dnode_get_string(args->dnode, "./name"); |
bc867a5d | 1068 | |
60ee8be1 | 1069 | if (args->event != NB_EV_APPLY) |
bc867a5d CS |
1070 | return NB_OK; |
1071 | ||
1072 | vrfp = vrf_get(VRF_UNKNOWN, vrfname); | |
1073 | ||
60ee8be1 | 1074 | nb_running_set_entry(args->dnode, vrfp); |
bc867a5d CS |
1075 | |
1076 | return NB_OK; | |
1077 | } | |
1078 | ||
60ee8be1 | 1079 | static int lib_vrf_destroy(struct nb_cb_destroy_args *args) |
bc867a5d CS |
1080 | { |
1081 | struct vrf *vrfp; | |
1082 | ||
60ee8be1 | 1083 | switch (args->event) { |
bc867a5d | 1084 | case NB_EV_VALIDATE: |
60ee8be1 | 1085 | vrfp = nb_running_get_entry(args->dnode, NULL, true); |
bc867a5d | 1086 | if (CHECK_FLAG(vrfp->status, VRF_ACTIVE)) { |
10bdc68f RW |
1087 | snprintf(args->errmsg, args->errmsg_len, |
1088 | "Only inactive VRFs can be deleted"); | |
bc867a5d CS |
1089 | return NB_ERR_VALIDATION; |
1090 | } | |
1091 | break; | |
1092 | case NB_EV_PREPARE: | |
1093 | case NB_EV_ABORT: | |
1094 | break; | |
1095 | case NB_EV_APPLY: | |
60ee8be1 | 1096 | vrfp = nb_running_unset_entry(args->dnode); |
8b4cb7a6 | 1097 | |
bc867a5d CS |
1098 | /* Clear configured flag and invoke delete. */ |
1099 | UNSET_FLAG(vrfp->status, VRF_CONFIGURED); | |
1100 | vrf_delete(vrfp); | |
1101 | break; | |
1102 | } | |
1103 | ||
1104 | return NB_OK; | |
1105 | } | |
1106 | ||
60ee8be1 | 1107 | static const void *lib_vrf_get_next(struct nb_cb_get_next_args *args) |
bc867a5d | 1108 | { |
60ee8be1 | 1109 | struct vrf *vrfp = (struct vrf *)args->list_entry; |
bc867a5d | 1110 | |
60ee8be1 | 1111 | if (args->list_entry == NULL) { |
bc867a5d CS |
1112 | vrfp = RB_MIN(vrf_name_head, &vrfs_by_name); |
1113 | } else { | |
1114 | vrfp = RB_NEXT(vrf_name_head, vrfp); | |
1115 | } | |
1116 | ||
1117 | return vrfp; | |
1118 | } | |
1119 | ||
60ee8be1 | 1120 | static int lib_vrf_get_keys(struct nb_cb_get_keys_args *args) |
bc867a5d | 1121 | { |
60ee8be1 | 1122 | struct vrf *vrfp = (struct vrf *)args->list_entry; |
bc867a5d | 1123 | |
60ee8be1 RW |
1124 | args->keys->num = 1; |
1125 | strlcpy(args->keys->key[0], vrfp->name, sizeof(args->keys->key[0])); | |
bc867a5d CS |
1126 | |
1127 | return NB_OK; | |
1128 | } | |
1129 | ||
60ee8be1 | 1130 | static const void *lib_vrf_lookup_entry(struct nb_cb_lookup_entry_args *args) |
bc867a5d | 1131 | { |
60ee8be1 | 1132 | const char *vrfname = args->keys->key[0]; |
bc867a5d CS |
1133 | |
1134 | struct vrf *vrf = vrf_lookup_by_name(vrfname); | |
1135 | ||
1136 | return vrf; | |
1137 | } | |
1138 | ||
1139 | /* | |
1140 | * XPath: /frr-vrf:lib/vrf/id | |
1141 | */ | |
60ee8be1 RW |
1142 | static struct yang_data * |
1143 | lib_vrf_state_id_get_elem(struct nb_cb_get_elem_args *args) | |
bc867a5d | 1144 | { |
60ee8be1 | 1145 | struct vrf *vrfp = (struct vrf *)args->list_entry; |
bc867a5d | 1146 | |
60ee8be1 | 1147 | return yang_data_new_uint32(args->xpath, vrfp->vrf_id); |
bc867a5d CS |
1148 | } |
1149 | ||
1150 | /* | |
1151 | * XPath: /frr-vrf:lib/vrf/active | |
1152 | */ | |
60ee8be1 RW |
1153 | static struct yang_data * |
1154 | lib_vrf_state_active_get_elem(struct nb_cb_get_elem_args *args) | |
bc867a5d | 1155 | { |
60ee8be1 | 1156 | struct vrf *vrfp = (struct vrf *)args->list_entry; |
bc867a5d CS |
1157 | |
1158 | if (vrfp->status == VRF_ACTIVE) | |
1159 | return yang_data_new_bool( | |
60ee8be1 | 1160 | args->xpath, vrfp->status == VRF_ACTIVE ? true : false); |
bc867a5d CS |
1161 | |
1162 | return NULL; | |
1163 | } | |
1164 | ||
1165 | /* clang-format off */ | |
1166 | const struct frr_yang_module_info frr_vrf_info = { | |
1167 | .name = "frr-vrf", | |
1168 | .nodes = { | |
1169 | { | |
1170 | .xpath = "/frr-vrf:lib/vrf", | |
1171 | .cbs = { | |
1172 | .create = lib_vrf_create, | |
1173 | .destroy = lib_vrf_destroy, | |
1174 | .get_next = lib_vrf_get_next, | |
1175 | .get_keys = lib_vrf_get_keys, | |
1176 | .lookup_entry = lib_vrf_lookup_entry, | |
1177 | } | |
1178 | }, | |
1179 | { | |
1180 | .xpath = "/frr-vrf:lib/vrf/state/id", | |
1181 | .cbs = { | |
1182 | .get_elem = lib_vrf_state_id_get_elem, | |
1183 | } | |
1184 | }, | |
1185 | { | |
1186 | .xpath = "/frr-vrf:lib/vrf/state/active", | |
1187 | .cbs = { | |
1188 | .get_elem = lib_vrf_state_active_get_elem, | |
1189 | } | |
1190 | }, | |
1191 | { | |
1192 | .xpath = NULL, | |
1193 | }, | |
1194 | } | |
1195 | }; | |
1196 |