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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 | ||
6a69b354 | 24 | #include "if.h" |
b72ede27 | 25 | #include "vrf.h" |
7922fc65 | 26 | #include "vrf_int.h" |
b72ede27 FL |
27 | #include "prefix.h" |
28 | #include "table.h" | |
29 | #include "log.h" | |
30 | #include "memory.h" | |
19dc275e | 31 | #include "command.h" |
b95c1883 | 32 | #include "ns.h" |
3bc34908 | 33 | #include "privs.h" |
98cbbaea | 34 | #include "nexthop_group.h" |
b66d022e | 35 | #include "lib_errors.h" |
bc867a5d | 36 | #include "northbound.h" |
8b4cb7a6 | 37 | #include "northbound_cli.h" |
19dc275e | 38 | |
1eb92f06 | 39 | /* default VRF name value used when VRF backend is not NETNS */ |
dd114702 | 40 | #define VRF_DEFAULT_NAME_INTERNAL "default" |
ec31f30d | 41 | |
bf8d3d6a DL |
42 | DEFINE_MTYPE_STATIC(LIB, VRF, "VRF"); |
43 | DEFINE_MTYPE_STATIC(LIB, VRF_BITMAP, "VRF bit-map"); | |
4a1ab8e4 | 44 | |
96244aca | 45 | DEFINE_QOBJ_TYPE(vrf); |
e80e7cce | 46 | |
d62a17ae | 47 | static __inline int vrf_id_compare(const struct vrf *, const struct vrf *); |
48 | static __inline int vrf_name_compare(const struct vrf *, const struct vrf *); | |
1a1a7065 | 49 | |
d62a17ae | 50 | RB_GENERATE(vrf_id_head, vrf, id_entry, vrf_id_compare); |
51 | RB_GENERATE(vrf_name_head, vrf, name_entry, vrf_name_compare); | |
1a1a7065 | 52 | |
d62a17ae | 53 | struct vrf_id_head vrfs_by_id = RB_INITIALIZER(&vrfs_by_id); |
54 | struct vrf_name_head vrfs_by_name = RB_INITIALIZER(&vrfs_by_name); | |
1a1a7065 | 55 | |
78dd30b2 | 56 | static int vrf_backend; |
72261ecd | 57 | static int vrf_backend_configured; |
c200f5e1 | 58 | static char vrf_default_name[VRF_NAMSIZ] = VRF_DEFAULT_NAME_INTERNAL; |
78dd30b2 | 59 | |
19dc275e DS |
60 | /* |
61 | * Turn on/off debug code | |
62 | * for vrf. | |
63 | */ | |
c17faa4b | 64 | static int debug_vrf = 0; |
b72ede27 | 65 | |
b72ede27 | 66 | /* Holding VRF hooks */ |
1b3e9a21 | 67 | static struct vrf_master { |
d62a17ae | 68 | int (*vrf_new_hook)(struct vrf *); |
69 | int (*vrf_delete_hook)(struct vrf *); | |
70 | int (*vrf_enable_hook)(struct vrf *); | |
71 | int (*vrf_disable_hook)(struct vrf *); | |
ecbc5a37 | 72 | int (*vrf_update_name_hook)(struct vrf *vrf); |
d62a17ae | 73 | } vrf_master = { |
74 | 0, | |
75 | }; | |
b72ede27 | 76 | |
d62a17ae | 77 | static int vrf_is_enabled(struct vrf *vrf); |
e5bf3e1e | 78 | |
216b18ef | 79 | /* VRF list existance check by name. */ |
d62a17ae | 80 | struct vrf *vrf_lookup_by_name(const char *name) |
216b18ef | 81 | { |
d62a17ae | 82 | struct vrf vrf; |
83 | strlcpy(vrf.name, name, sizeof(vrf.name)); | |
84 | return (RB_FIND(vrf_name_head, &vrfs_by_name, &vrf)); | |
216b18ef | 85 | } |
216b18ef | 86 | |
d62a17ae | 87 | static __inline int vrf_id_compare(const struct vrf *a, const struct vrf *b) |
b72ede27 | 88 | { |
d62a17ae | 89 | return (a->vrf_id - b->vrf_id); |
216b18ef DS |
90 | } |
91 | ||
d62a17ae | 92 | static int vrf_name_compare(const struct vrf *a, const struct vrf *b) |
b72ede27 | 93 | { |
d62a17ae | 94 | return strcmp(a->name, b->name); |
b72ede27 FL |
95 | } |
96 | ||
ce1be369 PG |
97 | int vrf_switch_to_netns(vrf_id_t vrf_id) |
98 | { | |
99 | char *name; | |
100 | struct vrf *vrf = vrf_lookup_by_id(vrf_id); | |
101 | ||
ce1be369 | 102 | /* VRF is default VRF. silently ignore */ |
e26aedbe | 103 | if (!vrf || vrf->vrf_id == VRF_DEFAULT) |
9dff1132 | 104 | return 1; /* 1 = default */ |
e26aedbe PG |
105 | /* VRF has no NETNS backend. silently ignore */ |
106 | if (vrf->data.l.netns_name[0] == '\0') | |
9dff1132 | 107 | return 2; /* 2 = no netns */ |
ce1be369 PG |
108 | name = ns_netns_pathname(NULL, vrf->data.l.netns_name); |
109 | if (debug_vrf) | |
110 | zlog_debug("VRF_SWITCH: %s(%u)", name, vrf->vrf_id); | |
111 | return ns_switch_to_netns(name); | |
112 | } | |
113 | ||
114 | int vrf_switchback_to_initial(void) | |
115 | { | |
116 | int ret = ns_switchback_to_initial(); | |
117 | ||
118 | if (ret == 0 && debug_vrf) | |
119 | zlog_debug("VRF_SWITCHBACK"); | |
120 | return ret; | |
121 | } | |
122 | ||
216b18ef | 123 | /* Get a VRF. If not found, create one. |
34f8e6af DS |
124 | * Arg: |
125 | * name - The name of the vrf. May be NULL if unknown. | |
126 | * vrf_id - The vrf_id of the vrf. May be VRF_UNKNOWN if unknown | |
216b18ef | 127 | * Description: Please note that this routine can be called with just the name |
34f8e6af DS |
128 | * and 0 vrf-id |
129 | */ | |
d62a17ae | 130 | struct vrf *vrf_get(vrf_id_t vrf_id, const char *name) |
131 | { | |
132 | struct vrf *vrf = NULL; | |
133 | int new = 0; | |
134 | ||
d62a17ae | 135 | /* Nothing to see, move along here */ |
136 | if (!name && vrf_id == VRF_UNKNOWN) | |
137 | return NULL; | |
138 | ||
0c2bac38 PG |
139 | /* attempt to find already available VRF |
140 | */ | |
141 | if (name) | |
142 | vrf = vrf_lookup_by_name(name); | |
dd114702 PG |
143 | if (vrf && vrf_id != VRF_UNKNOWN |
144 | && vrf->vrf_id != VRF_UNKNOWN | |
145 | && vrf->vrf_id != vrf_id) { | |
146 | zlog_debug("VRF_GET: avoid %s creation(%u), same name exists (%u)", | |
147 | name, vrf_id, vrf->vrf_id); | |
148 | return NULL; | |
149 | } | |
d62a17ae | 150 | /* Try to find VRF both by ID and name */ |
0c2bac38 | 151 | if (!vrf && vrf_id != VRF_UNKNOWN) |
d62a17ae | 152 | vrf = vrf_lookup_by_id(vrf_id); |
d62a17ae | 153 | |
154 | if (vrf == NULL) { | |
155 | vrf = XCALLOC(MTYPE_VRF, sizeof(struct vrf)); | |
156 | vrf->vrf_id = VRF_UNKNOWN; | |
d62a17ae | 157 | QOBJ_REG(vrf, vrf); |
158 | new = 1; | |
159 | ||
160 | if (debug_vrf) | |
161 | zlog_debug("VRF(%u) %s is created.", vrf_id, | |
162 | (name) ? name : "(NULL)"); | |
163 | } | |
164 | ||
165 | /* Set identifier */ | |
166 | if (vrf_id != VRF_UNKNOWN && vrf->vrf_id == VRF_UNKNOWN) { | |
167 | vrf->vrf_id = vrf_id; | |
168 | RB_INSERT(vrf_id_head, &vrfs_by_id, vrf); | |
169 | } | |
170 | ||
171 | /* Set name */ | |
172 | if (name && vrf->name[0] != '\0' && strcmp(name, vrf->name)) { | |
87272aff | 173 | /* update the vrf name */ |
d62a17ae | 174 | RB_REMOVE(vrf_name_head, &vrfs_by_name, vrf); |
87272aff PG |
175 | strlcpy(vrf->data.l.netns_name, |
176 | name, NS_NAMSIZ); | |
d62a17ae | 177 | strlcpy(vrf->name, name, sizeof(vrf->name)); |
178 | RB_INSERT(vrf_name_head, &vrfs_by_name, vrf); | |
87272aff PG |
179 | if (vrf->vrf_id == VRF_DEFAULT) |
180 | vrf_set_default_name(vrf->name, false); | |
d62a17ae | 181 | } else if (name && vrf->name[0] == '\0') { |
182 | strlcpy(vrf->name, name, sizeof(vrf->name)); | |
183 | RB_INSERT(vrf_name_head, &vrfs_by_name, vrf); | |
184 | } | |
d62a17ae | 185 | if (new &&vrf_master.vrf_new_hook) |
186 | (*vrf_master.vrf_new_hook)(vrf); | |
187 | ||
188 | return vrf; | |
b72ede27 FL |
189 | } |
190 | ||
75d26fb3 | 191 | /* Update a VRF. If not found, create one. |
192 | * Arg: | |
193 | * name - The name of the vrf. | |
194 | * vrf_id - The vrf_id of the vrf. | |
195 | * Description: This function first finds the vrf using its name. If the vrf is | |
196 | * found and the vrf-id of the existing vrf does not match the new vrf id, it | |
197 | * will disable the existing vrf and update it with new vrf-id. If the vrf is | |
198 | * not found, it will create the vrf with given name and the new vrf id. | |
199 | */ | |
200 | struct vrf *vrf_update(vrf_id_t new_vrf_id, const char *name) | |
201 | { | |
202 | struct vrf *vrf = NULL; | |
203 | ||
204 | /*Treat VRF add for existing vrf as update | |
205 | * Update VRF ID and also update in VRF ID table | |
206 | */ | |
207 | if (name) | |
208 | vrf = vrf_lookup_by_name(name); | |
209 | if (vrf && new_vrf_id != VRF_UNKNOWN && vrf->vrf_id != VRF_UNKNOWN | |
210 | && vrf->vrf_id != new_vrf_id) { | |
211 | if (debug_vrf) { | |
212 | zlog_debug( | |
213 | "Vrf Update event: %s old id: %u, new id: %u", | |
214 | name, vrf->vrf_id, new_vrf_id); | |
215 | } | |
216 | ||
217 | /*Disable the vrf to simulate implicit delete | |
218 | * so that all stale routes are deleted | |
219 | * This vrf will be enabled down the line | |
220 | */ | |
221 | vrf_disable(vrf); | |
222 | ||
223 | ||
224 | RB_REMOVE(vrf_id_head, &vrfs_by_id, vrf); | |
225 | vrf->vrf_id = new_vrf_id; | |
226 | RB_INSERT(vrf_id_head, &vrfs_by_id, vrf); | |
227 | ||
228 | } else { | |
229 | ||
230 | /* | |
231 | * vrf_get is implied creation if it does not exist | |
232 | */ | |
233 | vrf = vrf_get(new_vrf_id, name); | |
234 | } | |
235 | return vrf; | |
236 | } | |
237 | ||
84915b0a | 238 | /* Delete a VRF. This is called when the underlying VRF goes away, a |
239 | * pre-configured VRF is deleted or when shutting down (vrf_terminate()). | |
240 | */ | |
d62a17ae | 241 | void vrf_delete(struct vrf *vrf) |
b72ede27 | 242 | { |
d62a17ae | 243 | if (debug_vrf) |
c7384cf8 DS |
244 | zlog_debug("VRF %s(%u) is to be deleted.", vrf->name, |
245 | vrf->vrf_id); | |
b72ede27 | 246 | |
d62a17ae | 247 | if (vrf_is_enabled(vrf)) |
248 | vrf_disable(vrf); | |
e5bf3e1e | 249 | |
f60a1188 IR |
250 | if (vrf->vrf_id != VRF_UNKNOWN) { |
251 | RB_REMOVE(vrf_id_head, &vrfs_by_id, vrf); | |
252 | vrf->vrf_id = VRF_UNKNOWN; | |
253 | } | |
254 | ||
84915b0a | 255 | /* If the VRF is user configured, it'll stick around, just remove |
256 | * the ID mapping. Interfaces assigned to this VRF should've been | |
257 | * removed already as part of the VRF going down. | |
258 | */ | |
9acc98c8 | 259 | if (vrf_is_user_cfged(vrf)) |
84915b0a | 260 | return; |
84915b0a | 261 | |
f60a1188 IR |
262 | /* Do not delete the VRF if it has interfaces configured in it. */ |
263 | if (!RB_EMPTY(if_name_head, &vrf->ifaces_by_name)) | |
264 | return; | |
265 | ||
d62a17ae | 266 | if (vrf_master.vrf_delete_hook) |
267 | (*vrf_master.vrf_delete_hook)(vrf); | |
216b18ef | 268 | |
d62a17ae | 269 | QOBJ_UNREG(vrf); |
b72ede27 | 270 | |
d62a17ae | 271 | if (vrf->name[0] != '\0') |
272 | RB_REMOVE(vrf_name_head, &vrfs_by_name, vrf); | |
b72ede27 | 273 | |
d62a17ae | 274 | XFREE(MTYPE_VRF, vrf); |
b72ede27 FL |
275 | } |
276 | ||
277 | /* Look up a VRF by identifier. */ | |
d62a17ae | 278 | struct vrf *vrf_lookup_by_id(vrf_id_t vrf_id) |
b72ede27 | 279 | { |
d62a17ae | 280 | struct vrf vrf; |
281 | vrf.vrf_id = vrf_id; | |
282 | return (RB_FIND(vrf_id_head, &vrfs_by_id, &vrf)); | |
b72ede27 FL |
283 | } |
284 | ||
e5bf3e1e FL |
285 | /* |
286 | * Enable a VRF - that is, let the VRF be ready to use. | |
287 | * The VRF_ENABLE_HOOK callback will be called to inform | |
288 | * that they can allocate resources in this VRF. | |
289 | * | |
290 | * RETURN: 1 - enabled successfully; otherwise, 0. | |
291 | */ | |
d62a17ae | 292 | int vrf_enable(struct vrf *vrf) |
e5bf3e1e | 293 | { |
d62a17ae | 294 | if (vrf_is_enabled(vrf)) |
295 | return 1; | |
05e8e11e | 296 | |
d62a17ae | 297 | if (debug_vrf) |
c7384cf8 | 298 | zlog_debug("VRF %s(%u) is enabled.", vrf->name, vrf->vrf_id); |
e5bf3e1e | 299 | |
d62a17ae | 300 | SET_FLAG(vrf->status, VRF_ACTIVE); |
e5bf3e1e | 301 | |
d62a17ae | 302 | if (vrf_master.vrf_enable_hook) |
303 | (*vrf_master.vrf_enable_hook)(vrf); | |
e5bf3e1e | 304 | |
98cbbaea DS |
305 | /* |
306 | * If we have any nexthop group entries that | |
307 | * are awaiting vrf initialization then | |
308 | * let's let people know about it | |
309 | */ | |
310 | nexthop_group_enable_vrf(vrf); | |
311 | ||
d62a17ae | 312 | return 1; |
e5bf3e1e FL |
313 | } |
314 | ||
315 | /* | |
316 | * Disable a VRF - that is, let the VRF be unusable. | |
317 | * The VRF_DELETE_HOOK callback will be called to inform | |
318 | * that they must release the resources in the VRF. | |
319 | */ | |
697d3ec7 | 320 | void vrf_disable(struct vrf *vrf) |
e5bf3e1e | 321 | { |
d62a17ae | 322 | if (!vrf_is_enabled(vrf)) |
323 | return; | |
a647bfa8 | 324 | |
d62a17ae | 325 | UNSET_FLAG(vrf->status, VRF_ACTIVE); |
e5bf3e1e | 326 | |
d62a17ae | 327 | if (debug_vrf) |
c7384cf8 DS |
328 | zlog_debug("VRF %s(%u) is to be disabled.", vrf->name, |
329 | vrf->vrf_id); | |
e5bf3e1e | 330 | |
d62a17ae | 331 | /* Till now, nothing to be done for the default VRF. */ |
332 | // Pending: see why this statement. | |
e74f14fc | 333 | |
0cbee799 DS |
334 | |
335 | /* | |
336 | * When the vrf is disabled let's | |
337 | * handle all nexthop-groups associated | |
338 | * with this vrf | |
339 | */ | |
340 | nexthop_group_disable_vrf(vrf); | |
341 | ||
d62a17ae | 342 | if (vrf_master.vrf_disable_hook) |
343 | (*vrf_master.vrf_disable_hook)(vrf); | |
e5bf3e1e FL |
344 | } |
345 | ||
b7cfce93 MK |
346 | const char *vrf_id_to_name(vrf_id_t vrf_id) |
347 | { | |
348 | struct vrf *vrf; | |
349 | ||
7c1119cb CG |
350 | if (vrf_id == VRF_DEFAULT) |
351 | return VRF_DEFAULT_NAME; | |
352 | ||
b7cfce93 | 353 | vrf = vrf_lookup_by_id(vrf_id); |
bd47f3a3 | 354 | return VRF_LOGNAME(vrf); |
b7cfce93 MK |
355 | } |
356 | ||
b72ede27 | 357 | /* Look up the data pointer of the specified VRF. */ |
d62a17ae | 358 | void *vrf_info_lookup(vrf_id_t vrf_id) |
b72ede27 | 359 | { |
d62a17ae | 360 | struct vrf *vrf = vrf_lookup_by_id(vrf_id); |
361 | return vrf ? vrf->info : NULL; | |
b72ede27 FL |
362 | } |
363 | ||
7076bb2f | 364 | /* |
4a8bf858 | 365 | * VRF hash for storing set or not. |
7076bb2f | 366 | */ |
4a8bf858 DS |
367 | struct vrf_bit_set { |
368 | vrf_id_t vrf_id; | |
369 | bool set; | |
370 | }; | |
7076bb2f | 371 | |
d8b87afe | 372 | static unsigned int vrf_hash_bitmap_key(const void *data) |
4a8bf858 | 373 | { |
d8b87afe | 374 | const struct vrf_bit_set *bit = data; |
d62a17ae | 375 | |
4a8bf858 DS |
376 | return bit->vrf_id; |
377 | } | |
d62a17ae | 378 | |
74df8d6d | 379 | static bool vrf_hash_bitmap_cmp(const void *a, const void *b) |
4a8bf858 DS |
380 | { |
381 | const struct vrf_bit_set *bit1 = a; | |
382 | const struct vrf_bit_set *bit2 = b; | |
d62a17ae | 383 | |
4a8bf858 DS |
384 | return bit1->vrf_id == bit2->vrf_id; |
385 | } | |
386 | ||
387 | static void *vrf_hash_bitmap_alloc(void *data) | |
388 | { | |
389 | struct vrf_bit_set *copy = data; | |
390 | struct vrf_bit_set *bit; | |
391 | ||
392 | bit = XMALLOC(MTYPE_VRF_BITMAP, sizeof(*bit)); | |
393 | bit->vrf_id = copy->vrf_id; | |
394 | ||
395 | return bit; | |
396 | } | |
397 | ||
398 | static void vrf_hash_bitmap_free(void *data) | |
399 | { | |
400 | struct vrf_bit_set *bit = data; | |
401 | ||
402 | XFREE(MTYPE_VRF_BITMAP, bit); | |
403 | } | |
7076bb2f | 404 | |
d62a17ae | 405 | vrf_bitmap_t vrf_bitmap_init(void) |
7076bb2f | 406 | { |
4a8bf858 DS |
407 | return hash_create_size(32, vrf_hash_bitmap_key, vrf_hash_bitmap_cmp, |
408 | "VRF BIT HASH"); | |
7076bb2f FL |
409 | } |
410 | ||
d62a17ae | 411 | void vrf_bitmap_free(vrf_bitmap_t bmap) |
7076bb2f | 412 | { |
4a8bf858 | 413 | struct hash *vrf_hash = bmap; |
7076bb2f | 414 | |
4a8bf858 | 415 | if (vrf_hash == NULL) |
d62a17ae | 416 | return; |
7076bb2f | 417 | |
4a8bf858 DS |
418 | hash_clean(vrf_hash, vrf_hash_bitmap_free); |
419 | hash_free(vrf_hash); | |
7076bb2f FL |
420 | } |
421 | ||
d62a17ae | 422 | void vrf_bitmap_set(vrf_bitmap_t bmap, vrf_id_t vrf_id) |
7076bb2f | 423 | { |
4a8bf858 DS |
424 | struct vrf_bit_set lookup = { .vrf_id = vrf_id }; |
425 | struct hash *vrf_hash = bmap; | |
426 | struct vrf_bit_set *bit; | |
7076bb2f | 427 | |
4a8bf858 | 428 | if (vrf_hash == NULL || vrf_id == VRF_UNKNOWN) |
d62a17ae | 429 | return; |
7076bb2f | 430 | |
4a8bf858 DS |
431 | bit = hash_get(vrf_hash, &lookup, vrf_hash_bitmap_alloc); |
432 | bit->set = true; | |
7076bb2f FL |
433 | } |
434 | ||
d62a17ae | 435 | void vrf_bitmap_unset(vrf_bitmap_t bmap, vrf_id_t vrf_id) |
7076bb2f | 436 | { |
4a8bf858 DS |
437 | struct vrf_bit_set lookup = { .vrf_id = vrf_id }; |
438 | struct hash *vrf_hash = bmap; | |
439 | struct vrf_bit_set *bit; | |
7076bb2f | 440 | |
4a8bf858 | 441 | if (vrf_hash == NULL || vrf_id == VRF_UNKNOWN) |
d62a17ae | 442 | return; |
7076bb2f | 443 | |
4a8bf858 DS |
444 | bit = hash_get(vrf_hash, &lookup, vrf_hash_bitmap_alloc); |
445 | bit->set = false; | |
7076bb2f FL |
446 | } |
447 | ||
d62a17ae | 448 | int vrf_bitmap_check(vrf_bitmap_t bmap, vrf_id_t vrf_id) |
7076bb2f | 449 | { |
4a8bf858 DS |
450 | struct vrf_bit_set lookup = { .vrf_id = vrf_id }; |
451 | struct hash *vrf_hash = bmap; | |
452 | struct vrf_bit_set *bit; | |
7076bb2f | 453 | |
4a8bf858 | 454 | if (vrf_hash == NULL || vrf_id == VRF_UNKNOWN) |
d62a17ae | 455 | return 0; |
7076bb2f | 456 | |
4a8bf858 DS |
457 | bit = hash_lookup(vrf_hash, &lookup); |
458 | if (bit) | |
459 | return bit->set; | |
460 | ||
461 | return 0; | |
7076bb2f FL |
462 | } |
463 | ||
d62a17ae | 464 | static void vrf_autocomplete(vector comps, struct cmd_token *token) |
d617d5fe | 465 | { |
d62a17ae | 466 | struct vrf *vrf = NULL; |
d617d5fe | 467 | |
723001fc PG |
468 | RB_FOREACH (vrf, vrf_name_head, &vrfs_by_name) |
469 | vector_set(comps, XSTRDUP(MTYPE_COMPLETION, vrf->name)); | |
d617d5fe DS |
470 | } |
471 | ||
472 | static const struct cmd_variable_handler vrf_var_handlers[] = { | |
d62a17ae | 473 | { |
474 | .varname = "vrf", | |
475 | .completions = vrf_autocomplete, | |
476 | }, | |
e429a2a0 IR |
477 | { |
478 | .varname = "vrf_name", | |
479 | .completions = vrf_autocomplete, | |
480 | }, | |
481 | { | |
482 | .varname = "nexthop_vrf", | |
483 | .completions = vrf_autocomplete, | |
484 | }, | |
d62a17ae | 485 | {.completions = NULL}, |
d617d5fe DS |
486 | }; |
487 | ||
b72ede27 | 488 | /* Initialize VRF module. */ |
d62a17ae | 489 | void vrf_init(int (*create)(struct vrf *), int (*enable)(struct vrf *), |
d01b92fd | 490 | int (*disable)(struct vrf *), int (*destroy)(struct vrf *), |
ecbc5a37 | 491 | int ((*update)(struct vrf *))) |
d62a17ae | 492 | { |
493 | struct vrf *default_vrf; | |
494 | ||
e26aedbe PG |
495 | /* initialise NS, in case VRF backend if NETNS */ |
496 | ns_init(); | |
d62a17ae | 497 | if (debug_vrf) |
15569c58 | 498 | zlog_debug("%s: Initializing VRF subsystem", __func__); |
d62a17ae | 499 | |
500 | vrf_master.vrf_new_hook = create; | |
501 | vrf_master.vrf_enable_hook = enable; | |
502 | vrf_master.vrf_disable_hook = disable; | |
d01b92fd | 503 | vrf_master.vrf_delete_hook = destroy; |
ecbc5a37 | 504 | vrf_master.vrf_update_name_hook = update; |
d62a17ae | 505 | |
506 | /* The default VRF always exists. */ | |
eb6934d5 | 507 | default_vrf = vrf_get(VRF_DEFAULT, VRF_DEFAULT_NAME); |
d62a17ae | 508 | if (!default_vrf) { |
450971aa | 509 | flog_err(EC_LIB_VRF_START, |
1c50c1c0 | 510 | "vrf_init: failed to create the default VRF!"); |
d62a17ae | 511 | exit(1); |
512 | } | |
20c87e98 TC |
513 | if (vrf_is_backend_netns()) { |
514 | struct ns *ns; | |
515 | ||
fdafe17e | 516 | strlcpy(default_vrf->data.l.netns_name, |
eb6934d5 | 517 | VRF_DEFAULT_NAME, NS_NAMSIZ); |
1eb92f06 | 518 | ns = ns_lookup(NS_DEFAULT); |
c3568c4d TC |
519 | ns->vrf_ctxt = default_vrf; |
520 | default_vrf->ns_ctxt = ns; | |
20c87e98 | 521 | } |
d62a17ae | 522 | |
523 | /* Enable the default VRF. */ | |
524 | if (!vrf_enable(default_vrf)) { | |
450971aa | 525 | flog_err(EC_LIB_VRF_START, |
1c50c1c0 | 526 | "vrf_init: failed to enable the default VRF!"); |
d62a17ae | 527 | exit(1); |
528 | } | |
529 | ||
530 | cmd_variable_handler_register(vrf_var_handlers); | |
b72ede27 FL |
531 | } |
532 | ||
ea0d70b1 SW |
533 | static void vrf_terminate_single(struct vrf *vrf) |
534 | { | |
535 | /* Clear configured flag and invoke delete. */ | |
536 | UNSET_FLAG(vrf->status, VRF_CONFIGURED); | |
f60a1188 | 537 | if_terminate(vrf); |
ce27a13e | 538 | vrf_delete(vrf); |
ea0d70b1 SW |
539 | } |
540 | ||
b72ede27 | 541 | /* Terminate VRF module. */ |
d62a17ae | 542 | void vrf_terminate(void) |
b72ede27 | 543 | { |
ea0d70b1 | 544 | struct vrf *vrf, *tmp; |
b72ede27 | 545 | |
d62a17ae | 546 | if (debug_vrf) |
15569c58 | 547 | zlog_debug("%s: Shutting down vrf subsystem", __func__); |
19dc275e | 548 | |
ea0d70b1 SW |
549 | RB_FOREACH_SAFE (vrf, vrf_id_head, &vrfs_by_id, tmp) { |
550 | if (vrf->vrf_id == VRF_DEFAULT) | |
551 | continue; | |
55cd0f61 | 552 | |
ea0d70b1 | 553 | vrf_terminate_single(vrf); |
65c3a7c4 | 554 | } |
55cd0f61 | 555 | |
ea0d70b1 SW |
556 | RB_FOREACH_SAFE (vrf, vrf_name_head, &vrfs_by_name, tmp) { |
557 | if (vrf->vrf_id == VRF_DEFAULT) | |
558 | continue; | |
55cd0f61 | 559 | |
ea0d70b1 | 560 | vrf_terminate_single(vrf); |
65c3a7c4 | 561 | } |
ea0d70b1 SW |
562 | |
563 | /* Finally terminate default VRF */ | |
564 | vrf = vrf_lookup_by_id(VRF_DEFAULT); | |
565 | vrf_terminate_single(vrf); | |
b72ede27 FL |
566 | } |
567 | ||
0f4977c6 | 568 | int vrf_socket(int domain, int type, int protocol, vrf_id_t vrf_id, |
02fe07c7 | 569 | const char *interfacename) |
e5bf3e1e | 570 | { |
2e0d2b3d | 571 | int ret, save_errno, ret2; |
e5bf3e1e | 572 | |
2e0d2b3d PG |
573 | ret = vrf_switch_to_netns(vrf_id); |
574 | if (ret < 0) | |
450971aa | 575 | flog_err_sys(EC_LIB_SOCKET, "%s: Can't switch to VRF %u (%s)", |
09c866e3 | 576 | __func__, vrf_id, safe_strerror(errno)); |
b66d022e | 577 | |
d62a17ae | 578 | ret = socket(domain, type, protocol); |
2e0d2b3d PG |
579 | save_errno = errno; |
580 | ret2 = vrf_switchback_to_initial(); | |
581 | if (ret2 < 0) | |
450971aa | 582 | flog_err_sys(EC_LIB_SOCKET, |
09c866e3 QY |
583 | "%s: Can't switchback from VRF %u (%s)", __func__, |
584 | vrf_id, safe_strerror(errno)); | |
2e0d2b3d | 585 | errno = save_errno; |
0f4977c6 PG |
586 | if (ret <= 0) |
587 | return ret; | |
588 | ret2 = vrf_bind(vrf_id, ret, interfacename); | |
589 | if (ret2 < 0) { | |
590 | close(ret); | |
591 | ret = ret2; | |
592 | } | |
d62a17ae | 593 | return ret; |
e5bf3e1e FL |
594 | } |
595 | ||
78dd30b2 PG |
596 | int vrf_is_backend_netns(void) |
597 | { | |
598 | return (vrf_backend == VRF_BACKEND_NETNS); | |
599 | } | |
600 | ||
601 | int vrf_get_backend(void) | |
602 | { | |
72261ecd PG |
603 | if (!vrf_backend_configured) |
604 | return VRF_BACKEND_UNKNOWN; | |
78dd30b2 PG |
605 | return vrf_backend; |
606 | } | |
607 | ||
7239d3d9 | 608 | int vrf_configure_backend(enum vrf_backend_type backend) |
78dd30b2 | 609 | { |
f7d45925 QY |
610 | /* Work around issue in old gcc */ |
611 | switch (backend) { | |
612 | case VRF_BACKEND_UNKNOWN: | |
613 | case VRF_BACKEND_NETNS: | |
614 | case VRF_BACKEND_VRF_LITE: | |
615 | break; | |
616 | default: | |
7239d3d9 | 617 | return -1; |
f7d45925 | 618 | } |
7239d3d9 QY |
619 | |
620 | vrf_backend = backend; | |
72261ecd | 621 | vrf_backend_configured = 1; |
7239d3d9 QY |
622 | |
623 | return 0; | |
78dd30b2 PG |
624 | } |
625 | ||
697d3ec7 | 626 | /* vrf CLI commands */ |
16d6ea59 QY |
627 | DEFUN_NOSH(vrf_exit, |
628 | vrf_exit_cmd, | |
629 | "exit-vrf", | |
630 | "Exit current mode and down to previous mode\n") | |
631 | { | |
799a81df | 632 | cmd_exit(vty); |
16d6ea59 QY |
633 | return CMD_SUCCESS; |
634 | } | |
635 | ||
ca77b518 | 636 | DEFUN_YANG_NOSH (vrf, |
697d3ec7 PG |
637 | vrf_cmd, |
638 | "vrf NAME", | |
639 | "Select a VRF to configure\n" | |
640 | "VRF's name\n") | |
641 | { | |
642 | int idx_name = 1; | |
643 | const char *vrfname = argv[idx_name]->arg; | |
62d89c64 IR |
644 | char xpath_list[XPATH_MAXLEN]; |
645 | struct vrf *vrf; | |
646 | int ret; | |
697d3ec7 | 647 | |
62d89c64 IR |
648 | if (strlen(vrfname) > VRF_NAMSIZ) { |
649 | vty_out(vty, | |
650 | "%% VRF name %s invalid: length exceeds %d bytes\n", | |
651 | vrfname, VRF_NAMSIZ); | |
652 | return CMD_WARNING_CONFIG_FAILED; | |
653 | } | |
654 | ||
655 | snprintf(xpath_list, sizeof(xpath_list), FRR_VRF_KEY_XPATH, vrfname); | |
656 | ||
657 | nb_cli_enqueue_change(vty, xpath_list, NB_OP_CREATE, NULL); | |
658 | ret = nb_cli_apply_changes_clear_pending(vty, xpath_list); | |
659 | if (ret == CMD_SUCCESS) { | |
660 | VTY_PUSH_XPATH(VRF_NODE, xpath_list); | |
661 | vrf = vrf_lookup_by_name(vrfname); | |
662 | if (vrf) | |
663 | VTY_PUSH_CONTEXT(VRF_NODE, vrf); | |
664 | } | |
665 | ||
666 | return ret; | |
697d3ec7 PG |
667 | } |
668 | ||
ca77b518 | 669 | DEFUN_YANG (no_vrf, |
34c46274 RW |
670 | no_vrf_cmd, |
671 | "no vrf NAME", | |
672 | NO_STR | |
673 | "Delete a pseudo VRF's configuration\n" | |
674 | "VRF's name\n") | |
f30c50b9 | 675 | { |
d62a17ae | 676 | const char *vrfname = argv[2]->arg; |
8b4cb7a6 | 677 | char xpath_list[XPATH_MAXLEN]; |
53dc2b05 | 678 | |
d62a17ae | 679 | struct vrf *vrfp; |
f30c50b9 | 680 | |
d62a17ae | 681 | vrfp = vrf_lookup_by_name(vrfname); |
f30c50b9 | 682 | |
cd980d03 IR |
683 | if (vrfp == NULL) |
684 | return CMD_SUCCESS; | |
f30c50b9 | 685 | |
d62a17ae | 686 | if (CHECK_FLAG(vrfp->status, VRF_ACTIVE)) { |
687 | vty_out(vty, "%% Only inactive VRFs can be deleted\n"); | |
688 | return CMD_WARNING_CONFIG_FAILED; | |
689 | } | |
f30c50b9 | 690 | |
f5eef2d5 IR |
691 | if (vrf_get_backend() == VRF_BACKEND_VRF_LITE) { |
692 | /* | |
693 | * Remove the VRF interface config. Currently, we allow to | |
694 | * remove only inactive VRFs, so we use VRF_DEFAULT_NAME here, | |
695 | * because when the VRF is removed from kernel, the interface | |
696 | * is moved to the default VRF. If we ever allow removing | |
697 | * active VRFs, this code have to be updated accordingly. | |
698 | */ | |
699 | snprintf(xpath_list, sizeof(xpath_list), | |
700 | "/frr-interface:lib/interface[name='%s'][vrf='%s']", | |
701 | vrfname, VRF_DEFAULT_NAME); | |
702 | nb_cli_enqueue_change(vty, xpath_list, NB_OP_DESTROY, NULL); | |
703 | } | |
704 | ||
09b150ef | 705 | snprintf(xpath_list, sizeof(xpath_list), FRR_VRF_KEY_XPATH, vrfname); |
f30c50b9 | 706 | |
8b4cb7a6 | 707 | nb_cli_enqueue_change(vty, xpath_list, NB_OP_DESTROY, NULL); |
f5eef2d5 | 708 | return nb_cli_apply_changes(vty, NULL); |
f30c50b9 RW |
709 | } |
710 | ||
53dc2b05 | 711 | |
62b346ee | 712 | static struct cmd_node vrf_node = { |
f4b8291f | 713 | .name = "vrf", |
62b346ee | 714 | .node = VRF_NODE, |
24389580 | 715 | .parent_node = CONFIG_NODE, |
62b346ee | 716 | .prompt = "%s(config-vrf)# ", |
62b346ee | 717 | }; |
7ddcfca4 | 718 | |
19dc275e DS |
719 | /* |
720 | * Debug CLI for vrf's | |
721 | */ | |
722 | DEFUN (vrf_debug, | |
723 | vrf_debug_cmd, | |
724 | "debug vrf", | |
725 | DEBUG_STR | |
726 | "VRF Debugging\n") | |
727 | { | |
d62a17ae | 728 | debug_vrf = 1; |
19dc275e | 729 | |
d62a17ae | 730 | return CMD_SUCCESS; |
19dc275e DS |
731 | } |
732 | ||
733 | DEFUN (no_vrf_debug, | |
734 | no_vrf_debug_cmd, | |
735 | "no debug vrf", | |
736 | NO_STR | |
737 | DEBUG_STR | |
738 | "VRF Debugging\n") | |
739 | { | |
d62a17ae | 740 | debug_vrf = 0; |
19dc275e | 741 | |
d62a17ae | 742 | return CMD_SUCCESS; |
19dc275e DS |
743 | } |
744 | ||
d62a17ae | 745 | static int vrf_write_host(struct vty *vty) |
19dc275e | 746 | { |
d62a17ae | 747 | if (debug_vrf) |
748 | vty_out(vty, "debug vrf\n"); | |
19dc275e | 749 | |
d62a17ae | 750 | return 1; |
19dc275e DS |
751 | } |
752 | ||
612c2c15 | 753 | static int vrf_write_host(struct vty *vty); |
62b346ee | 754 | static struct cmd_node vrf_debug_node = { |
f4b8291f | 755 | .name = "vrf debug", |
62b346ee DL |
756 | .node = VRF_DEBUG_NODE, |
757 | .prompt = "", | |
612c2c15 | 758 | .config_write = vrf_write_host, |
62b346ee | 759 | }; |
19dc275e | 760 | |
d62a17ae | 761 | void vrf_install_commands(void) |
19dc275e | 762 | { |
612c2c15 | 763 | install_node(&vrf_debug_node); |
19dc275e | 764 | |
d62a17ae | 765 | install_element(CONFIG_NODE, &vrf_debug_cmd); |
766 | install_element(ENABLE_NODE, &vrf_debug_cmd); | |
767 | install_element(CONFIG_NODE, &no_vrf_debug_cmd); | |
768 | install_element(ENABLE_NODE, &no_vrf_debug_cmd); | |
19dc275e | 769 | } |
53dc2b05 | 770 | |
cfc369c4 | 771 | void vrf_cmd_init(int (*writefunc)(struct vty *vty)) |
7ddcfca4 | 772 | { |
d62a17ae | 773 | install_element(CONFIG_NODE, &vrf_cmd); |
774 | install_element(CONFIG_NODE, &no_vrf_cmd); | |
612c2c15 DL |
775 | vrf_node.config_write = writefunc; |
776 | install_node(&vrf_node); | |
d62a17ae | 777 | install_default(VRF_NODE); |
16d6ea59 | 778 | install_element(VRF_NODE, &vrf_exit_cmd); |
19dc275e | 779 | } |
ec31f30d | 780 | |
4fe52e76 | 781 | void vrf_set_default_name(const char *default_name, bool force) |
ec31f30d | 782 | { |
c200f5e1 | 783 | struct vrf *def_vrf; |
4fe52e76 | 784 | static bool def_vrf_forced; |
ec31f30d | 785 | |
c200f5e1 PG |
786 | def_vrf = vrf_lookup_by_id(VRF_DEFAULT); |
787 | assert(default_name); | |
4fe52e76 PG |
788 | if (def_vrf && !force && def_vrf_forced) { |
789 | zlog_debug("VRF: %s, avoid changing name to %s, previously forced (%u)", | |
790 | def_vrf->name, default_name, | |
791 | def_vrf->vrf_id); | |
792 | return; | |
793 | } | |
87272aff PG |
794 | if (strmatch(vrf_default_name, default_name)) |
795 | return; | |
c200f5e1 PG |
796 | snprintf(vrf_default_name, VRF_NAMSIZ, "%s", default_name); |
797 | if (def_vrf) { | |
4fe52e76 PG |
798 | if (force) |
799 | def_vrf_forced = true; | |
c200f5e1 PG |
800 | RB_REMOVE(vrf_name_head, &vrfs_by_name, def_vrf); |
801 | strlcpy(def_vrf->data.l.netns_name, | |
802 | vrf_default_name, NS_NAMSIZ); | |
803 | strlcpy(def_vrf->name, vrf_default_name, sizeof(def_vrf->name)); | |
804 | RB_INSERT(vrf_name_head, &vrfs_by_name, def_vrf); | |
ecbc5a37 PG |
805 | if (vrf_master.vrf_update_name_hook) |
806 | (*vrf_master.vrf_update_name_hook)(def_vrf); | |
c200f5e1 PG |
807 | } |
808 | } | |
809 | ||
810 | const char *vrf_get_default_name(void) | |
811 | { | |
812 | return vrf_default_name; | |
813 | } | |
814 | ||
36eef858 | 815 | int vrf_bind(vrf_id_t vrf_id, int fd, const char *ifname) |
0f4977c6 PG |
816 | { |
817 | int ret = 0; | |
91f854f6 | 818 | struct interface *ifp; |
36eef858 IR |
819 | struct vrf *vrf; |
820 | ||
821 | if (fd < 0) | |
822 | return -1; | |
823 | ||
824 | if (vrf_id == VRF_UNKNOWN) | |
825 | return -1; | |
826 | ||
827 | /* can't bind to a VRF that doesn't exist */ | |
828 | vrf = vrf_lookup_by_id(vrf_id); | |
829 | if (!vrf_is_enabled(vrf)) | |
830 | return -1; | |
831 | ||
832 | if (ifname && strcmp(ifname, vrf->name)) { | |
833 | /* binding to a regular interface */ | |
834 | ||
835 | /* can't bind to an interface that doesn't exist */ | |
836 | ifp = if_lookup_by_name(ifname, vrf_id); | |
837 | if (!ifp) | |
838 | return -1; | |
839 | } else { | |
840 | /* binding to a VRF device */ | |
841 | ||
842 | /* nothing to do for netns */ | |
843 | if (vrf_is_backend_netns()) | |
844 | return 0; | |
845 | ||
846 | /* nothing to do for default vrf */ | |
847 | if (vrf_id == VRF_DEFAULT) | |
848 | return 0; | |
849 | ||
850 | ifname = vrf->name; | |
851 | } | |
0f4977c6 | 852 | |
0f4977c6 | 853 | #ifdef SO_BINDTODEVICE |
36eef858 IR |
854 | ret = setsockopt(fd, SOL_SOCKET, SO_BINDTODEVICE, ifname, |
855 | strlen(ifname) + 1); | |
0f4977c6 | 856 | if (ret < 0) |
36eef858 IR |
857 | zlog_err("bind to interface %s failed, errno=%d", ifname, |
858 | errno); | |
0f4977c6 PG |
859 | #endif /* SO_BINDTODEVICE */ |
860 | return ret; | |
861 | } | |
2e0d2b3d | 862 | int vrf_getaddrinfo(const char *node, const char *service, |
996c9314 LB |
863 | const struct addrinfo *hints, struct addrinfo **res, |
864 | vrf_id_t vrf_id) | |
2e0d2b3d PG |
865 | { |
866 | int ret, ret2, save_errno; | |
867 | ||
868 | ret = vrf_switch_to_netns(vrf_id); | |
869 | if (ret < 0) | |
450971aa | 870 | flog_err_sys(EC_LIB_SOCKET, "%s: Can't switch to VRF %u (%s)", |
09c866e3 | 871 | __func__, vrf_id, safe_strerror(errno)); |
2e0d2b3d PG |
872 | ret = getaddrinfo(node, service, hints, res); |
873 | save_errno = errno; | |
874 | ret2 = vrf_switchback_to_initial(); | |
875 | if (ret2 < 0) | |
450971aa | 876 | flog_err_sys(EC_LIB_SOCKET, |
09c866e3 QY |
877 | "%s: Can't switchback from VRF %u (%s)", __func__, |
878 | vrf_id, safe_strerror(errno)); | |
2e0d2b3d PG |
879 | errno = save_errno; |
880 | return ret; | |
881 | } | |
882 | ||
516d7591 PG |
883 | int vrf_ioctl(vrf_id_t vrf_id, int d, unsigned long request, char *params) |
884 | { | |
885 | int ret, saved_errno, rc; | |
886 | ||
887 | ret = vrf_switch_to_netns(vrf_id); | |
888 | if (ret < 0) { | |
450971aa | 889 | flog_err_sys(EC_LIB_SOCKET, "%s: Can't switch to VRF %u (%s)", |
09c866e3 | 890 | __func__, vrf_id, safe_strerror(errno)); |
516d7591 PG |
891 | return 0; |
892 | } | |
893 | rc = ioctl(d, request, params); | |
894 | saved_errno = errno; | |
895 | ret = vrf_switchback_to_initial(); | |
896 | if (ret < 0) | |
450971aa | 897 | flog_err_sys(EC_LIB_SOCKET, |
09c866e3 QY |
898 | "%s: Can't switchback from VRF %u (%s)", __func__, |
899 | vrf_id, safe_strerror(errno)); | |
516d7591 PG |
900 | errno = saved_errno; |
901 | return rc; | |
902 | } | |
903 | ||
0f4977c6 | 904 | int vrf_sockunion_socket(const union sockunion *su, vrf_id_t vrf_id, |
02fe07c7 | 905 | const char *interfacename) |
2e0d2b3d PG |
906 | { |
907 | int ret, save_errno, ret2; | |
908 | ||
909 | ret = vrf_switch_to_netns(vrf_id); | |
910 | if (ret < 0) | |
450971aa | 911 | flog_err_sys(EC_LIB_SOCKET, "%s: Can't switch to VRF %u (%s)", |
09c866e3 | 912 | __func__, vrf_id, safe_strerror(errno)); |
2e0d2b3d PG |
913 | ret = sockunion_socket(su); |
914 | save_errno = errno; | |
915 | ret2 = vrf_switchback_to_initial(); | |
916 | if (ret2 < 0) | |
450971aa | 917 | flog_err_sys(EC_LIB_SOCKET, |
09c866e3 QY |
918 | "%s: Can't switchback from VRF %u (%s)", __func__, |
919 | vrf_id, safe_strerror(errno)); | |
2e0d2b3d | 920 | errno = save_errno; |
0f4977c6 PG |
921 | |
922 | if (ret <= 0) | |
923 | return ret; | |
924 | ret2 = vrf_bind(vrf_id, ret, interfacename); | |
925 | if (ret2 < 0) { | |
926 | close(ret); | |
927 | ret = ret2; | |
928 | } | |
2e0d2b3d PG |
929 | return ret; |
930 | } | |
0b014ea6 | 931 | |
bc867a5d CS |
932 | /* ------- Northbound callbacks ------- */ |
933 | ||
934 | /* | |
935 | * XPath: /frr-vrf:lib/vrf | |
936 | */ | |
60ee8be1 | 937 | static int lib_vrf_create(struct nb_cb_create_args *args) |
bc867a5d CS |
938 | { |
939 | const char *vrfname; | |
940 | struct vrf *vrfp; | |
941 | ||
60ee8be1 | 942 | vrfname = yang_dnode_get_string(args->dnode, "./name"); |
bc867a5d | 943 | |
60ee8be1 | 944 | if (args->event != NB_EV_APPLY) |
bc867a5d CS |
945 | return NB_OK; |
946 | ||
947 | vrfp = vrf_get(VRF_UNKNOWN, vrfname); | |
948 | ||
b9b794db | 949 | SET_FLAG(vrfp->status, VRF_CONFIGURED); |
60ee8be1 | 950 | nb_running_set_entry(args->dnode, vrfp); |
bc867a5d CS |
951 | |
952 | return NB_OK; | |
953 | } | |
954 | ||
60ee8be1 | 955 | static int lib_vrf_destroy(struct nb_cb_destroy_args *args) |
bc867a5d CS |
956 | { |
957 | struct vrf *vrfp; | |
958 | ||
60ee8be1 | 959 | switch (args->event) { |
bc867a5d | 960 | case NB_EV_VALIDATE: |
60ee8be1 | 961 | vrfp = nb_running_get_entry(args->dnode, NULL, true); |
bc867a5d | 962 | if (CHECK_FLAG(vrfp->status, VRF_ACTIVE)) { |
10bdc68f RW |
963 | snprintf(args->errmsg, args->errmsg_len, |
964 | "Only inactive VRFs can be deleted"); | |
bc867a5d CS |
965 | return NB_ERR_VALIDATION; |
966 | } | |
967 | break; | |
968 | case NB_EV_PREPARE: | |
969 | case NB_EV_ABORT: | |
970 | break; | |
971 | case NB_EV_APPLY: | |
60ee8be1 | 972 | vrfp = nb_running_unset_entry(args->dnode); |
8b4cb7a6 | 973 | |
bc867a5d | 974 | /* Clear configured flag and invoke delete. */ |
b9b794db | 975 | UNSET_FLAG(vrfp->status, VRF_CONFIGURED); |
bc867a5d CS |
976 | vrf_delete(vrfp); |
977 | break; | |
978 | } | |
979 | ||
980 | return NB_OK; | |
981 | } | |
982 | ||
60ee8be1 | 983 | static const void *lib_vrf_get_next(struct nb_cb_get_next_args *args) |
bc867a5d | 984 | { |
60ee8be1 | 985 | struct vrf *vrfp = (struct vrf *)args->list_entry; |
bc867a5d | 986 | |
60ee8be1 | 987 | if (args->list_entry == NULL) { |
bc867a5d CS |
988 | vrfp = RB_MIN(vrf_name_head, &vrfs_by_name); |
989 | } else { | |
990 | vrfp = RB_NEXT(vrf_name_head, vrfp); | |
991 | } | |
992 | ||
993 | return vrfp; | |
994 | } | |
995 | ||
60ee8be1 | 996 | static int lib_vrf_get_keys(struct nb_cb_get_keys_args *args) |
bc867a5d | 997 | { |
60ee8be1 | 998 | struct vrf *vrfp = (struct vrf *)args->list_entry; |
bc867a5d | 999 | |
60ee8be1 RW |
1000 | args->keys->num = 1; |
1001 | strlcpy(args->keys->key[0], vrfp->name, sizeof(args->keys->key[0])); | |
bc867a5d CS |
1002 | |
1003 | return NB_OK; | |
1004 | } | |
1005 | ||
60ee8be1 | 1006 | static const void *lib_vrf_lookup_entry(struct nb_cb_lookup_entry_args *args) |
bc867a5d | 1007 | { |
60ee8be1 | 1008 | const char *vrfname = args->keys->key[0]; |
bc867a5d CS |
1009 | |
1010 | struct vrf *vrf = vrf_lookup_by_name(vrfname); | |
1011 | ||
1012 | return vrf; | |
1013 | } | |
1014 | ||
1015 | /* | |
1016 | * XPath: /frr-vrf:lib/vrf/id | |
1017 | */ | |
60ee8be1 RW |
1018 | static struct yang_data * |
1019 | lib_vrf_state_id_get_elem(struct nb_cb_get_elem_args *args) | |
bc867a5d | 1020 | { |
60ee8be1 | 1021 | struct vrf *vrfp = (struct vrf *)args->list_entry; |
bc867a5d | 1022 | |
60ee8be1 | 1023 | return yang_data_new_uint32(args->xpath, vrfp->vrf_id); |
bc867a5d CS |
1024 | } |
1025 | ||
1026 | /* | |
1027 | * XPath: /frr-vrf:lib/vrf/active | |
1028 | */ | |
60ee8be1 RW |
1029 | static struct yang_data * |
1030 | lib_vrf_state_active_get_elem(struct nb_cb_get_elem_args *args) | |
bc867a5d | 1031 | { |
60ee8be1 | 1032 | struct vrf *vrfp = (struct vrf *)args->list_entry; |
bc867a5d CS |
1033 | |
1034 | if (vrfp->status == VRF_ACTIVE) | |
1035 | return yang_data_new_bool( | |
60ee8be1 | 1036 | args->xpath, vrfp->status == VRF_ACTIVE ? true : false); |
bc867a5d CS |
1037 | |
1038 | return NULL; | |
1039 | } | |
1040 | ||
1041 | /* clang-format off */ | |
1042 | const struct frr_yang_module_info frr_vrf_info = { | |
1043 | .name = "frr-vrf", | |
1044 | .nodes = { | |
1045 | { | |
1046 | .xpath = "/frr-vrf:lib/vrf", | |
1047 | .cbs = { | |
1048 | .create = lib_vrf_create, | |
1049 | .destroy = lib_vrf_destroy, | |
1050 | .get_next = lib_vrf_get_next, | |
1051 | .get_keys = lib_vrf_get_keys, | |
1052 | .lookup_entry = lib_vrf_lookup_entry, | |
3bb513c3 CH |
1053 | }, |
1054 | .priority = NB_DFLT_PRIORITY - 2, | |
bc867a5d CS |
1055 | }, |
1056 | { | |
1057 | .xpath = "/frr-vrf:lib/vrf/state/id", | |
1058 | .cbs = { | |
1059 | .get_elem = lib_vrf_state_id_get_elem, | |
1060 | } | |
1061 | }, | |
1062 | { | |
1063 | .xpath = "/frr-vrf:lib/vrf/state/active", | |
1064 | .cbs = { | |
1065 | .get_elem = lib_vrf_state_active_get_elem, | |
1066 | } | |
1067 | }, | |
1068 | { | |
1069 | .xpath = NULL, | |
1070 | }, | |
1071 | } | |
1072 | }; | |
1073 |