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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 | |
1eb92f06 | 42 | /* default VRF name value used when VRF backend is not NETNS */ |
dd114702 | 43 | #define VRF_DEFAULT_NAME_INTERNAL "default" |
ec31f30d | 44 | |
d62a17ae | 45 | DEFINE_MTYPE_STATIC(LIB, VRF, "VRF") |
4a1ab8e4 DL |
46 | DEFINE_MTYPE_STATIC(LIB, VRF_BITMAP, "VRF bit-map") |
47 | ||
e80e7cce DL |
48 | DEFINE_QOBJ_TYPE(vrf) |
49 | ||
d62a17ae | 50 | static __inline int vrf_id_compare(const struct vrf *, const struct vrf *); |
51 | static __inline int vrf_name_compare(const struct vrf *, const struct vrf *); | |
1a1a7065 | 52 | |
d62a17ae | 53 | RB_GENERATE(vrf_id_head, vrf, id_entry, vrf_id_compare); |
54 | RB_GENERATE(vrf_name_head, vrf, name_entry, vrf_name_compare); | |
1a1a7065 | 55 | |
d62a17ae | 56 | struct vrf_id_head vrfs_by_id = RB_INITIALIZER(&vrfs_by_id); |
57 | struct vrf_name_head vrfs_by_name = RB_INITIALIZER(&vrfs_by_name); | |
1a1a7065 | 58 | |
78dd30b2 | 59 | static int vrf_backend; |
72261ecd | 60 | static int vrf_backend_configured; |
3bc34908 | 61 | static struct zebra_privs_t *vrf_daemon_privs; |
c200f5e1 | 62 | static char vrf_default_name[VRF_NAMSIZ] = VRF_DEFAULT_NAME_INTERNAL; |
78dd30b2 | 63 | |
19dc275e DS |
64 | /* |
65 | * Turn on/off debug code | |
66 | * for vrf. | |
67 | */ | |
c17faa4b | 68 | static int debug_vrf = 0; |
b72ede27 | 69 | |
b72ede27 | 70 | /* Holding VRF hooks */ |
1b3e9a21 | 71 | static struct vrf_master { |
d62a17ae | 72 | int (*vrf_new_hook)(struct vrf *); |
73 | int (*vrf_delete_hook)(struct vrf *); | |
74 | int (*vrf_enable_hook)(struct vrf *); | |
75 | int (*vrf_disable_hook)(struct vrf *); | |
ecbc5a37 | 76 | int (*vrf_update_name_hook)(struct vrf *vrf); |
d62a17ae | 77 | } vrf_master = { |
78 | 0, | |
79 | }; | |
b72ede27 | 80 | |
d62a17ae | 81 | static int vrf_is_enabled(struct vrf *vrf); |
e5bf3e1e | 82 | |
216b18ef | 83 | /* VRF list existance check by name. */ |
d62a17ae | 84 | struct vrf *vrf_lookup_by_name(const char *name) |
216b18ef | 85 | { |
d62a17ae | 86 | struct vrf vrf; |
87 | strlcpy(vrf.name, name, sizeof(vrf.name)); | |
88 | return (RB_FIND(vrf_name_head, &vrfs_by_name, &vrf)); | |
216b18ef | 89 | } |
216b18ef | 90 | |
d62a17ae | 91 | static __inline int vrf_id_compare(const struct vrf *a, const struct vrf *b) |
b72ede27 | 92 | { |
d62a17ae | 93 | return (a->vrf_id - b->vrf_id); |
216b18ef DS |
94 | } |
95 | ||
d62a17ae | 96 | static int vrf_name_compare(const struct vrf *a, const struct vrf *b) |
b72ede27 | 97 | { |
d62a17ae | 98 | return strcmp(a->name, b->name); |
b72ede27 FL |
99 | } |
100 | ||
e26aedbe PG |
101 | /* if ns_id is different and not VRF_UNKNOWN, |
102 | * then update vrf identifier, and enable VRF | |
103 | */ | |
104 | static void vrf_update_vrf_id(ns_id_t ns_id, void *opaqueptr) | |
105 | { | |
106 | ns_id_t vrf_id = (vrf_id_t)ns_id; | |
107 | vrf_id_t old_vrf_id; | |
108 | struct vrf *vrf = (struct vrf *)opaqueptr; | |
109 | ||
110 | if (!vrf) | |
111 | return; | |
112 | old_vrf_id = vrf->vrf_id; | |
113 | if (vrf_id == vrf->vrf_id) | |
114 | return; | |
115 | if (vrf->vrf_id != VRF_UNKNOWN) | |
116 | RB_REMOVE(vrf_id_head, &vrfs_by_id, vrf); | |
117 | vrf->vrf_id = vrf_id; | |
118 | RB_INSERT(vrf_id_head, &vrfs_by_id, vrf); | |
119 | if (old_vrf_id == VRF_UNKNOWN) | |
c4efd0f4 | 120 | vrf_enable(vrf); |
e26aedbe PG |
121 | } |
122 | ||
ce1be369 PG |
123 | int vrf_switch_to_netns(vrf_id_t vrf_id) |
124 | { | |
125 | char *name; | |
126 | struct vrf *vrf = vrf_lookup_by_id(vrf_id); | |
127 | ||
ce1be369 | 128 | /* VRF is default VRF. silently ignore */ |
e26aedbe | 129 | if (!vrf || vrf->vrf_id == VRF_DEFAULT) |
9dff1132 | 130 | return 1; /* 1 = default */ |
e26aedbe PG |
131 | /* VRF has no NETNS backend. silently ignore */ |
132 | if (vrf->data.l.netns_name[0] == '\0') | |
9dff1132 | 133 | return 2; /* 2 = no netns */ |
ce1be369 PG |
134 | name = ns_netns_pathname(NULL, vrf->data.l.netns_name); |
135 | if (debug_vrf) | |
136 | zlog_debug("VRF_SWITCH: %s(%u)", name, vrf->vrf_id); | |
137 | return ns_switch_to_netns(name); | |
138 | } | |
139 | ||
140 | int vrf_switchback_to_initial(void) | |
141 | { | |
142 | int ret = ns_switchback_to_initial(); | |
143 | ||
144 | if (ret == 0 && debug_vrf) | |
145 | zlog_debug("VRF_SWITCHBACK"); | |
146 | return ret; | |
147 | } | |
148 | ||
216b18ef | 149 | /* Get a VRF. If not found, create one. |
34f8e6af DS |
150 | * Arg: |
151 | * name - The name of the vrf. May be NULL if unknown. | |
152 | * vrf_id - The vrf_id of the vrf. May be VRF_UNKNOWN if unknown | |
216b18ef | 153 | * Description: Please note that this routine can be called with just the name |
34f8e6af DS |
154 | * and 0 vrf-id |
155 | */ | |
d62a17ae | 156 | struct vrf *vrf_get(vrf_id_t vrf_id, const char *name) |
157 | { | |
158 | struct vrf *vrf = NULL; | |
159 | int new = 0; | |
160 | ||
d62a17ae | 161 | /* Nothing to see, move along here */ |
162 | if (!name && vrf_id == VRF_UNKNOWN) | |
163 | return NULL; | |
164 | ||
0c2bac38 PG |
165 | /* attempt to find already available VRF |
166 | */ | |
167 | if (name) | |
168 | vrf = vrf_lookup_by_name(name); | |
dd114702 PG |
169 | if (vrf && vrf_id != VRF_UNKNOWN |
170 | && vrf->vrf_id != VRF_UNKNOWN | |
171 | && vrf->vrf_id != vrf_id) { | |
172 | zlog_debug("VRF_GET: avoid %s creation(%u), same name exists (%u)", | |
173 | name, vrf_id, vrf->vrf_id); | |
174 | return NULL; | |
175 | } | |
d62a17ae | 176 | /* Try to find VRF both by ID and name */ |
0c2bac38 | 177 | if (!vrf && vrf_id != VRF_UNKNOWN) |
d62a17ae | 178 | vrf = vrf_lookup_by_id(vrf_id); |
d62a17ae | 179 | |
180 | if (vrf == NULL) { | |
181 | vrf = XCALLOC(MTYPE_VRF, sizeof(struct vrf)); | |
182 | vrf->vrf_id = VRF_UNKNOWN; | |
d62a17ae | 183 | QOBJ_REG(vrf, vrf); |
184 | new = 1; | |
185 | ||
186 | if (debug_vrf) | |
187 | zlog_debug("VRF(%u) %s is created.", vrf_id, | |
188 | (name) ? name : "(NULL)"); | |
189 | } | |
190 | ||
191 | /* Set identifier */ | |
192 | if (vrf_id != VRF_UNKNOWN && vrf->vrf_id == VRF_UNKNOWN) { | |
193 | vrf->vrf_id = vrf_id; | |
194 | RB_INSERT(vrf_id_head, &vrfs_by_id, vrf); | |
195 | } | |
196 | ||
197 | /* Set name */ | |
198 | if (name && vrf->name[0] != '\0' && strcmp(name, vrf->name)) { | |
87272aff | 199 | /* update the vrf name */ |
d62a17ae | 200 | RB_REMOVE(vrf_name_head, &vrfs_by_name, vrf); |
87272aff PG |
201 | strlcpy(vrf->data.l.netns_name, |
202 | name, NS_NAMSIZ); | |
d62a17ae | 203 | strlcpy(vrf->name, name, sizeof(vrf->name)); |
204 | RB_INSERT(vrf_name_head, &vrfs_by_name, vrf); | |
87272aff PG |
205 | if (vrf->vrf_id == VRF_DEFAULT) |
206 | vrf_set_default_name(vrf->name, false); | |
d62a17ae | 207 | } else if (name && vrf->name[0] == '\0') { |
208 | strlcpy(vrf->name, name, sizeof(vrf->name)); | |
209 | RB_INSERT(vrf_name_head, &vrfs_by_name, vrf); | |
210 | } | |
d62a17ae | 211 | if (new &&vrf_master.vrf_new_hook) |
212 | (*vrf_master.vrf_new_hook)(vrf); | |
213 | ||
214 | return vrf; | |
b72ede27 FL |
215 | } |
216 | ||
75d26fb3 | 217 | /* Update a VRF. If not found, create one. |
218 | * Arg: | |
219 | * name - The name of the vrf. | |
220 | * vrf_id - The vrf_id of the vrf. | |
221 | * Description: This function first finds the vrf using its name. If the vrf is | |
222 | * found and the vrf-id of the existing vrf does not match the new vrf id, it | |
223 | * will disable the existing vrf and update it with new vrf-id. If the vrf is | |
224 | * not found, it will create the vrf with given name and the new vrf id. | |
225 | */ | |
226 | struct vrf *vrf_update(vrf_id_t new_vrf_id, const char *name) | |
227 | { | |
228 | struct vrf *vrf = NULL; | |
229 | ||
230 | /*Treat VRF add for existing vrf as update | |
231 | * Update VRF ID and also update in VRF ID table | |
232 | */ | |
233 | if (name) | |
234 | vrf = vrf_lookup_by_name(name); | |
235 | if (vrf && new_vrf_id != VRF_UNKNOWN && vrf->vrf_id != VRF_UNKNOWN | |
236 | && vrf->vrf_id != new_vrf_id) { | |
237 | if (debug_vrf) { | |
238 | zlog_debug( | |
239 | "Vrf Update event: %s old id: %u, new id: %u", | |
240 | name, vrf->vrf_id, new_vrf_id); | |
241 | } | |
242 | ||
243 | /*Disable the vrf to simulate implicit delete | |
244 | * so that all stale routes are deleted | |
245 | * This vrf will be enabled down the line | |
246 | */ | |
247 | vrf_disable(vrf); | |
248 | ||
249 | ||
250 | RB_REMOVE(vrf_id_head, &vrfs_by_id, vrf); | |
251 | vrf->vrf_id = new_vrf_id; | |
252 | RB_INSERT(vrf_id_head, &vrfs_by_id, vrf); | |
253 | ||
254 | } else { | |
255 | ||
256 | /* | |
257 | * vrf_get is implied creation if it does not exist | |
258 | */ | |
259 | vrf = vrf_get(new_vrf_id, name); | |
260 | } | |
261 | return vrf; | |
262 | } | |
263 | ||
84915b0a | 264 | /* Delete a VRF. This is called when the underlying VRF goes away, a |
265 | * pre-configured VRF is deleted or when shutting down (vrf_terminate()). | |
266 | */ | |
d62a17ae | 267 | void vrf_delete(struct vrf *vrf) |
b72ede27 | 268 | { |
d62a17ae | 269 | if (debug_vrf) |
c7384cf8 DS |
270 | zlog_debug("VRF %s(%u) is to be deleted.", vrf->name, |
271 | vrf->vrf_id); | |
b72ede27 | 272 | |
d62a17ae | 273 | if (vrf_is_enabled(vrf)) |
274 | vrf_disable(vrf); | |
e5bf3e1e | 275 | |
84915b0a | 276 | /* If the VRF is user configured, it'll stick around, just remove |
277 | * the ID mapping. Interfaces assigned to this VRF should've been | |
278 | * removed already as part of the VRF going down. | |
279 | */ | |
280 | if (vrf_is_user_cfged(vrf)) { | |
281 | if (vrf->vrf_id != VRF_UNKNOWN) { | |
282 | /* Delete any VRF interfaces - should be only | |
283 | * the VRF itself, other interfaces should've | |
284 | * been moved out of the VRF. | |
285 | */ | |
286 | if_terminate(vrf); | |
287 | RB_REMOVE(vrf_id_head, &vrfs_by_id, vrf); | |
288 | vrf->vrf_id = VRF_UNKNOWN; | |
289 | } | |
290 | return; | |
291 | } | |
292 | ||
d62a17ae | 293 | if (vrf_master.vrf_delete_hook) |
294 | (*vrf_master.vrf_delete_hook)(vrf); | |
216b18ef | 295 | |
d62a17ae | 296 | QOBJ_UNREG(vrf); |
f4e14fdb | 297 | if_terminate(vrf); |
b72ede27 | 298 | |
d62a17ae | 299 | if (vrf->vrf_id != VRF_UNKNOWN) |
300 | RB_REMOVE(vrf_id_head, &vrfs_by_id, vrf); | |
301 | if (vrf->name[0] != '\0') | |
302 | RB_REMOVE(vrf_name_head, &vrfs_by_name, vrf); | |
b72ede27 | 303 | |
d62a17ae | 304 | XFREE(MTYPE_VRF, vrf); |
b72ede27 FL |
305 | } |
306 | ||
307 | /* Look up a VRF by identifier. */ | |
d62a17ae | 308 | struct vrf *vrf_lookup_by_id(vrf_id_t vrf_id) |
b72ede27 | 309 | { |
d62a17ae | 310 | struct vrf vrf; |
311 | vrf.vrf_id = vrf_id; | |
312 | return (RB_FIND(vrf_id_head, &vrfs_by_id, &vrf)); | |
b72ede27 FL |
313 | } |
314 | ||
e5bf3e1e FL |
315 | /* |
316 | * Enable a VRF - that is, let the VRF be ready to use. | |
317 | * The VRF_ENABLE_HOOK callback will be called to inform | |
318 | * that they can allocate resources in this VRF. | |
319 | * | |
320 | * RETURN: 1 - enabled successfully; otherwise, 0. | |
321 | */ | |
d62a17ae | 322 | int vrf_enable(struct vrf *vrf) |
e5bf3e1e | 323 | { |
d62a17ae | 324 | if (vrf_is_enabled(vrf)) |
325 | return 1; | |
05e8e11e | 326 | |
d62a17ae | 327 | if (debug_vrf) |
c7384cf8 | 328 | zlog_debug("VRF %s(%u) is enabled.", vrf->name, vrf->vrf_id); |
e5bf3e1e | 329 | |
d62a17ae | 330 | SET_FLAG(vrf->status, VRF_ACTIVE); |
e5bf3e1e | 331 | |
d62a17ae | 332 | if (vrf_master.vrf_enable_hook) |
333 | (*vrf_master.vrf_enable_hook)(vrf); | |
e5bf3e1e | 334 | |
98cbbaea DS |
335 | /* |
336 | * If we have any nexthop group entries that | |
337 | * are awaiting vrf initialization then | |
338 | * let's let people know about it | |
339 | */ | |
340 | nexthop_group_enable_vrf(vrf); | |
341 | ||
d62a17ae | 342 | return 1; |
e5bf3e1e FL |
343 | } |
344 | ||
345 | /* | |
346 | * Disable a VRF - that is, let the VRF be unusable. | |
347 | * The VRF_DELETE_HOOK callback will be called to inform | |
348 | * that they must release the resources in the VRF. | |
349 | */ | |
697d3ec7 | 350 | void vrf_disable(struct vrf *vrf) |
e5bf3e1e | 351 | { |
d62a17ae | 352 | if (!vrf_is_enabled(vrf)) |
353 | return; | |
a647bfa8 | 354 | |
d62a17ae | 355 | UNSET_FLAG(vrf->status, VRF_ACTIVE); |
e5bf3e1e | 356 | |
d62a17ae | 357 | if (debug_vrf) |
c7384cf8 DS |
358 | zlog_debug("VRF %s(%u) is to be disabled.", vrf->name, |
359 | vrf->vrf_id); | |
e5bf3e1e | 360 | |
d62a17ae | 361 | /* Till now, nothing to be done for the default VRF. */ |
362 | // Pending: see why this statement. | |
e74f14fc | 363 | |
0cbee799 DS |
364 | |
365 | /* | |
366 | * When the vrf is disabled let's | |
367 | * handle all nexthop-groups associated | |
368 | * with this vrf | |
369 | */ | |
370 | nexthop_group_disable_vrf(vrf); | |
371 | ||
d62a17ae | 372 | if (vrf_master.vrf_disable_hook) |
373 | (*vrf_master.vrf_disable_hook)(vrf); | |
e5bf3e1e FL |
374 | } |
375 | ||
b7cfce93 MK |
376 | const char *vrf_id_to_name(vrf_id_t vrf_id) |
377 | { | |
378 | struct vrf *vrf; | |
379 | ||
7c1119cb CG |
380 | if (vrf_id == VRF_DEFAULT) |
381 | return VRF_DEFAULT_NAME; | |
382 | ||
b7cfce93 | 383 | vrf = vrf_lookup_by_id(vrf_id); |
bd47f3a3 | 384 | return VRF_LOGNAME(vrf); |
b7cfce93 MK |
385 | } |
386 | ||
d62a17ae | 387 | vrf_id_t vrf_name_to_id(const char *name) |
216b18ef | 388 | { |
d62a17ae | 389 | struct vrf *vrf; |
390 | vrf_id_t vrf_id = VRF_DEFAULT; // Pending: need a way to return invalid | |
391 | // id/ routine not used. | |
216b18ef | 392 | |
2569910b PG |
393 | if (!name) |
394 | return vrf_id; | |
d62a17ae | 395 | vrf = vrf_lookup_by_name(name); |
396 | if (vrf) | |
397 | vrf_id = vrf->vrf_id; | |
216b18ef | 398 | |
d62a17ae | 399 | return vrf_id; |
216b18ef DS |
400 | } |
401 | ||
b72ede27 | 402 | /* Get the data pointer of the specified VRF. If not found, create one. */ |
d62a17ae | 403 | void *vrf_info_get(vrf_id_t vrf_id) |
b72ede27 | 404 | { |
d62a17ae | 405 | struct vrf *vrf = vrf_get(vrf_id, NULL); |
406 | return vrf->info; | |
b72ede27 FL |
407 | } |
408 | ||
409 | /* Look up the data pointer of the specified VRF. */ | |
d62a17ae | 410 | void *vrf_info_lookup(vrf_id_t vrf_id) |
b72ede27 | 411 | { |
d62a17ae | 412 | struct vrf *vrf = vrf_lookup_by_id(vrf_id); |
413 | return vrf ? vrf->info : NULL; | |
b72ede27 FL |
414 | } |
415 | ||
7076bb2f | 416 | /* |
4a8bf858 | 417 | * VRF hash for storing set or not. |
7076bb2f | 418 | */ |
4a8bf858 DS |
419 | struct vrf_bit_set { |
420 | vrf_id_t vrf_id; | |
421 | bool set; | |
422 | }; | |
7076bb2f | 423 | |
d8b87afe | 424 | static unsigned int vrf_hash_bitmap_key(const void *data) |
4a8bf858 | 425 | { |
d8b87afe | 426 | const struct vrf_bit_set *bit = data; |
d62a17ae | 427 | |
4a8bf858 DS |
428 | return bit->vrf_id; |
429 | } | |
d62a17ae | 430 | |
74df8d6d | 431 | static bool vrf_hash_bitmap_cmp(const void *a, const void *b) |
4a8bf858 DS |
432 | { |
433 | const struct vrf_bit_set *bit1 = a; | |
434 | const struct vrf_bit_set *bit2 = b; | |
d62a17ae | 435 | |
4a8bf858 DS |
436 | return bit1->vrf_id == bit2->vrf_id; |
437 | } | |
438 | ||
439 | static void *vrf_hash_bitmap_alloc(void *data) | |
440 | { | |
441 | struct vrf_bit_set *copy = data; | |
442 | struct vrf_bit_set *bit; | |
443 | ||
444 | bit = XMALLOC(MTYPE_VRF_BITMAP, sizeof(*bit)); | |
445 | bit->vrf_id = copy->vrf_id; | |
446 | ||
447 | return bit; | |
448 | } | |
449 | ||
450 | static void vrf_hash_bitmap_free(void *data) | |
451 | { | |
452 | struct vrf_bit_set *bit = data; | |
453 | ||
454 | XFREE(MTYPE_VRF_BITMAP, bit); | |
455 | } | |
7076bb2f | 456 | |
d62a17ae | 457 | vrf_bitmap_t vrf_bitmap_init(void) |
7076bb2f | 458 | { |
4a8bf858 DS |
459 | return hash_create_size(32, vrf_hash_bitmap_key, vrf_hash_bitmap_cmp, |
460 | "VRF BIT HASH"); | |
7076bb2f FL |
461 | } |
462 | ||
d62a17ae | 463 | void vrf_bitmap_free(vrf_bitmap_t bmap) |
7076bb2f | 464 | { |
4a8bf858 | 465 | struct hash *vrf_hash = bmap; |
7076bb2f | 466 | |
4a8bf858 | 467 | if (vrf_hash == NULL) |
d62a17ae | 468 | return; |
7076bb2f | 469 | |
4a8bf858 DS |
470 | hash_clean(vrf_hash, vrf_hash_bitmap_free); |
471 | hash_free(vrf_hash); | |
7076bb2f FL |
472 | } |
473 | ||
d62a17ae | 474 | void vrf_bitmap_set(vrf_bitmap_t bmap, vrf_id_t vrf_id) |
7076bb2f | 475 | { |
4a8bf858 DS |
476 | struct vrf_bit_set lookup = { .vrf_id = vrf_id }; |
477 | struct hash *vrf_hash = bmap; | |
478 | struct vrf_bit_set *bit; | |
7076bb2f | 479 | |
4a8bf858 | 480 | if (vrf_hash == NULL || vrf_id == VRF_UNKNOWN) |
d62a17ae | 481 | return; |
7076bb2f | 482 | |
4a8bf858 DS |
483 | bit = hash_get(vrf_hash, &lookup, vrf_hash_bitmap_alloc); |
484 | bit->set = true; | |
7076bb2f FL |
485 | } |
486 | ||
d62a17ae | 487 | void vrf_bitmap_unset(vrf_bitmap_t bmap, vrf_id_t vrf_id) |
7076bb2f | 488 | { |
4a8bf858 DS |
489 | struct vrf_bit_set lookup = { .vrf_id = vrf_id }; |
490 | struct hash *vrf_hash = bmap; | |
491 | struct vrf_bit_set *bit; | |
7076bb2f | 492 | |
4a8bf858 | 493 | if (vrf_hash == NULL || vrf_id == VRF_UNKNOWN) |
d62a17ae | 494 | return; |
7076bb2f | 495 | |
4a8bf858 DS |
496 | bit = hash_get(vrf_hash, &lookup, vrf_hash_bitmap_alloc); |
497 | bit->set = false; | |
7076bb2f FL |
498 | } |
499 | ||
d62a17ae | 500 | int vrf_bitmap_check(vrf_bitmap_t bmap, vrf_id_t vrf_id) |
7076bb2f | 501 | { |
4a8bf858 DS |
502 | struct vrf_bit_set lookup = { .vrf_id = vrf_id }; |
503 | struct hash *vrf_hash = bmap; | |
504 | struct vrf_bit_set *bit; | |
7076bb2f | 505 | |
4a8bf858 | 506 | if (vrf_hash == NULL || vrf_id == VRF_UNKNOWN) |
d62a17ae | 507 | return 0; |
7076bb2f | 508 | |
4a8bf858 DS |
509 | bit = hash_lookup(vrf_hash, &lookup); |
510 | if (bit) | |
511 | return bit->set; | |
512 | ||
513 | return 0; | |
7076bb2f FL |
514 | } |
515 | ||
d62a17ae | 516 | static void vrf_autocomplete(vector comps, struct cmd_token *token) |
d617d5fe | 517 | { |
d62a17ae | 518 | struct vrf *vrf = NULL; |
d617d5fe | 519 | |
723001fc PG |
520 | RB_FOREACH (vrf, vrf_name_head, &vrfs_by_name) |
521 | vector_set(comps, XSTRDUP(MTYPE_COMPLETION, vrf->name)); | |
d617d5fe DS |
522 | } |
523 | ||
524 | static const struct cmd_variable_handler vrf_var_handlers[] = { | |
d62a17ae | 525 | { |
526 | .varname = "vrf", | |
527 | .completions = vrf_autocomplete, | |
528 | }, | |
e429a2a0 IR |
529 | { |
530 | .varname = "vrf_name", | |
531 | .completions = vrf_autocomplete, | |
532 | }, | |
533 | { | |
534 | .varname = "nexthop_vrf", | |
535 | .completions = vrf_autocomplete, | |
536 | }, | |
d62a17ae | 537 | {.completions = NULL}, |
d617d5fe DS |
538 | }; |
539 | ||
b72ede27 | 540 | /* Initialize VRF module. */ |
d62a17ae | 541 | void vrf_init(int (*create)(struct vrf *), int (*enable)(struct vrf *), |
d01b92fd | 542 | int (*disable)(struct vrf *), int (*destroy)(struct vrf *), |
ecbc5a37 | 543 | int ((*update)(struct vrf *))) |
d62a17ae | 544 | { |
545 | struct vrf *default_vrf; | |
546 | ||
e26aedbe PG |
547 | /* initialise NS, in case VRF backend if NETNS */ |
548 | ns_init(); | |
d62a17ae | 549 | if (debug_vrf) |
15569c58 | 550 | zlog_debug("%s: Initializing VRF subsystem", __func__); |
d62a17ae | 551 | |
552 | vrf_master.vrf_new_hook = create; | |
553 | vrf_master.vrf_enable_hook = enable; | |
554 | vrf_master.vrf_disable_hook = disable; | |
d01b92fd | 555 | vrf_master.vrf_delete_hook = destroy; |
ecbc5a37 | 556 | vrf_master.vrf_update_name_hook = update; |
d62a17ae | 557 | |
558 | /* The default VRF always exists. */ | |
eb6934d5 | 559 | default_vrf = vrf_get(VRF_DEFAULT, VRF_DEFAULT_NAME); |
d62a17ae | 560 | if (!default_vrf) { |
450971aa | 561 | flog_err(EC_LIB_VRF_START, |
1c50c1c0 | 562 | "vrf_init: failed to create the default VRF!"); |
d62a17ae | 563 | exit(1); |
564 | } | |
20c87e98 TC |
565 | if (vrf_is_backend_netns()) { |
566 | struct ns *ns; | |
567 | ||
fdafe17e | 568 | strlcpy(default_vrf->data.l.netns_name, |
eb6934d5 | 569 | VRF_DEFAULT_NAME, NS_NAMSIZ); |
1eb92f06 | 570 | ns = ns_lookup(NS_DEFAULT); |
c3568c4d TC |
571 | ns->vrf_ctxt = default_vrf; |
572 | default_vrf->ns_ctxt = ns; | |
20c87e98 | 573 | } |
d62a17ae | 574 | |
575 | /* Enable the default VRF. */ | |
576 | if (!vrf_enable(default_vrf)) { | |
450971aa | 577 | flog_err(EC_LIB_VRF_START, |
1c50c1c0 | 578 | "vrf_init: failed to enable the default VRF!"); |
d62a17ae | 579 | exit(1); |
580 | } | |
581 | ||
582 | cmd_variable_handler_register(vrf_var_handlers); | |
b72ede27 FL |
583 | } |
584 | ||
585 | /* Terminate VRF module. */ | |
d62a17ae | 586 | void vrf_terminate(void) |
b72ede27 | 587 | { |
d62a17ae | 588 | struct vrf *vrf; |
b72ede27 | 589 | |
d62a17ae | 590 | if (debug_vrf) |
15569c58 | 591 | zlog_debug("%s: Shutting down vrf subsystem", __func__); |
19dc275e | 592 | |
55cd0f61 DS |
593 | while (!RB_EMPTY(vrf_id_head, &vrfs_by_id)) { |
594 | vrf = RB_ROOT(vrf_id_head, &vrfs_by_id); | |
595 | ||
65c3a7c4 | 596 | /* Clear configured flag and invoke delete. */ |
597 | UNSET_FLAG(vrf->status, VRF_CONFIGURED); | |
d62a17ae | 598 | vrf_delete(vrf); |
65c3a7c4 | 599 | } |
55cd0f61 DS |
600 | |
601 | while (!RB_EMPTY(vrf_name_head, &vrfs_by_name)) { | |
602 | vrf = RB_ROOT(vrf_name_head, &vrfs_by_name); | |
603 | ||
65c3a7c4 | 604 | /* Clear configured flag and invoke delete. */ |
605 | UNSET_FLAG(vrf->status, VRF_CONFIGURED); | |
d62a17ae | 606 | vrf_delete(vrf); |
65c3a7c4 | 607 | } |
b72ede27 FL |
608 | } |
609 | ||
0f4977c6 | 610 | int vrf_socket(int domain, int type, int protocol, vrf_id_t vrf_id, |
02fe07c7 | 611 | const char *interfacename) |
e5bf3e1e | 612 | { |
2e0d2b3d | 613 | int ret, save_errno, ret2; |
e5bf3e1e | 614 | |
2e0d2b3d PG |
615 | ret = vrf_switch_to_netns(vrf_id); |
616 | if (ret < 0) | |
450971aa | 617 | flog_err_sys(EC_LIB_SOCKET, "%s: Can't switch to VRF %u (%s)", |
09c866e3 | 618 | __func__, vrf_id, safe_strerror(errno)); |
b66d022e | 619 | |
d62a17ae | 620 | ret = socket(domain, type, protocol); |
2e0d2b3d PG |
621 | save_errno = errno; |
622 | ret2 = vrf_switchback_to_initial(); | |
623 | if (ret2 < 0) | |
450971aa | 624 | flog_err_sys(EC_LIB_SOCKET, |
09c866e3 QY |
625 | "%s: Can't switchback from VRF %u (%s)", __func__, |
626 | vrf_id, safe_strerror(errno)); | |
2e0d2b3d | 627 | errno = save_errno; |
0f4977c6 PG |
628 | if (ret <= 0) |
629 | return ret; | |
630 | ret2 = vrf_bind(vrf_id, ret, interfacename); | |
631 | if (ret2 < 0) { | |
632 | close(ret); | |
633 | ret = ret2; | |
634 | } | |
d62a17ae | 635 | return ret; |
e5bf3e1e FL |
636 | } |
637 | ||
78dd30b2 PG |
638 | int vrf_is_backend_netns(void) |
639 | { | |
640 | return (vrf_backend == VRF_BACKEND_NETNS); | |
641 | } | |
642 | ||
643 | int vrf_get_backend(void) | |
644 | { | |
72261ecd PG |
645 | if (!vrf_backend_configured) |
646 | return VRF_BACKEND_UNKNOWN; | |
78dd30b2 PG |
647 | return vrf_backend; |
648 | } | |
649 | ||
7239d3d9 | 650 | int vrf_configure_backend(enum vrf_backend_type backend) |
78dd30b2 | 651 | { |
f7d45925 QY |
652 | /* Work around issue in old gcc */ |
653 | switch (backend) { | |
654 | case VRF_BACKEND_UNKNOWN: | |
655 | case VRF_BACKEND_NETNS: | |
656 | case VRF_BACKEND_VRF_LITE: | |
657 | break; | |
658 | default: | |
7239d3d9 | 659 | return -1; |
f7d45925 | 660 | } |
7239d3d9 QY |
661 | |
662 | vrf_backend = backend; | |
72261ecd | 663 | vrf_backend_configured = 1; |
7239d3d9 QY |
664 | |
665 | return 0; | |
78dd30b2 PG |
666 | } |
667 | ||
03aff2d8 PG |
668 | int vrf_handler_create(struct vty *vty, const char *vrfname, |
669 | struct vrf **vrf) | |
f30c50b9 | 670 | { |
d62a17ae | 671 | struct vrf *vrfp; |
8b4cb7a6 CS |
672 | char xpath_list[XPATH_MAXLEN]; |
673 | int ret; | |
f30c50b9 | 674 | |
d62a17ae | 675 | if (strlen(vrfname) > VRF_NAMSIZ) { |
697d3ec7 PG |
676 | if (vty) |
677 | vty_out(vty, | |
1d5453d6 | 678 | "%% VRF name %s invalid: length exceeds %d bytes", |
996c9314 | 679 | vrfname, VRF_NAMSIZ); |
697d3ec7 | 680 | else |
0351a28f | 681 | flog_warn( |
450971aa | 682 | EC_LIB_VRF_LENGTH, |
1d5453d6 | 683 | "%% VRF name %s invalid: length exceeds %d bytes", |
996c9314 | 684 | vrfname, VRF_NAMSIZ); |
d62a17ae | 685 | return CMD_WARNING_CONFIG_FAILED; |
686 | } | |
f30c50b9 | 687 | |
8b4cb7a6 CS |
688 | if (vty) { |
689 | snprintf(xpath_list, sizeof(xpath_list), | |
690 | "/frr-vrf:lib/vrf[name='%s']", vrfname); | |
691 | ||
692 | nb_cli_enqueue_change(vty, xpath_list, NB_OP_CREATE, NULL); | |
693 | ret = nb_cli_apply_changes(vty, xpath_list); | |
694 | if (ret == CMD_SUCCESS) { | |
695 | VTY_PUSH_XPATH(VRF_NODE, xpath_list); | |
b855e95f | 696 | nb_cli_pending_commit_check(vty); |
8b4cb7a6 CS |
697 | vrfp = vrf_lookup_by_name(vrfname); |
698 | if (vrfp) | |
699 | VTY_PUSH_CONTEXT(VRF_NODE, vrfp); | |
700 | } | |
701 | } else { | |
702 | vrfp = vrf_get(VRF_UNKNOWN, vrfname); | |
f30c50b9 | 703 | |
8b4cb7a6 CS |
704 | if (vrf) |
705 | *vrf = vrfp; | |
706 | } | |
d62a17ae | 707 | return CMD_SUCCESS; |
f30c50b9 RW |
708 | } |
709 | ||
996c9314 | 710 | int vrf_netns_handler_create(struct vty *vty, struct vrf *vrf, char *pathname, |
20f4b2b0 PG |
711 | ns_id_t ns_id, ns_id_t internal_ns_id, |
712 | ns_id_t rel_def_ns_id) | |
e26aedbe PG |
713 | { |
714 | struct ns *ns = NULL; | |
715 | ||
716 | if (!vrf) | |
717 | return CMD_WARNING_CONFIG_FAILED; | |
718 | if (vrf->vrf_id != VRF_UNKNOWN && vrf->ns_ctxt == NULL) { | |
719 | if (vty) | |
720 | vty_out(vty, | |
721 | "VRF %u is already configured with VRF %s\n", | |
722 | vrf->vrf_id, vrf->name); | |
723 | else | |
9165c5f5 | 724 | zlog_info("VRF %u is already configured with VRF %s", |
e26aedbe PG |
725 | vrf->vrf_id, vrf->name); |
726 | return CMD_WARNING_CONFIG_FAILED; | |
727 | } | |
728 | if (vrf->ns_ctxt != NULL) { | |
996c9314 | 729 | ns = (struct ns *)vrf->ns_ctxt; |
2e1cc436 | 730 | if (!strcmp(ns->name, pathname)) { |
e26aedbe PG |
731 | if (vty) |
732 | vty_out(vty, | |
996c9314 LB |
733 | "VRF %u already configured with NETNS %s\n", |
734 | vrf->vrf_id, ns->name); | |
e26aedbe | 735 | else |
0351a28f | 736 | zlog_info( |
ade6974d QY |
737 | "VRF %u already configured with NETNS %s", |
738 | vrf->vrf_id, ns->name); | |
e26aedbe PG |
739 | return CMD_WARNING_CONFIG_FAILED; |
740 | } | |
741 | } | |
742 | ns = ns_lookup_name(pathname); | |
743 | if (ns && ns->vrf_ctxt) { | |
744 | struct vrf *vrf2 = (struct vrf *)ns->vrf_ctxt; | |
745 | ||
746 | if (vrf2 == vrf) | |
747 | return CMD_SUCCESS; | |
748 | if (vty) | |
996c9314 | 749 | vty_out(vty, |
3efd0893 | 750 | "NS %s is already configured with VRF %u(%s)\n", |
996c9314 | 751 | ns->name, vrf2->vrf_id, vrf2->name); |
e26aedbe | 752 | else |
0351a28f | 753 | zlog_info("NS %s is already configured with VRF %u(%s)", |
e26aedbe PG |
754 | ns->name, vrf2->vrf_id, vrf2->name); |
755 | return CMD_WARNING_CONFIG_FAILED; | |
756 | } | |
757 | ns = ns_get_created(ns, pathname, ns_id); | |
03aff2d8 | 758 | ns->internal_ns_id = internal_ns_id; |
20f4b2b0 | 759 | ns->relative_default_ns = rel_def_ns_id; |
e26aedbe PG |
760 | ns->vrf_ctxt = (void *)vrf; |
761 | vrf->ns_ctxt = (void *)ns; | |
762 | /* update VRF netns NAME */ | |
2e1cc436 | 763 | strlcpy(vrf->data.l.netns_name, basename(pathname), NS_NAMSIZ); |
e26aedbe PG |
764 | |
765 | if (!ns_enable(ns, vrf_update_vrf_id)) { | |
766 | if (vty) | |
767 | vty_out(vty, "Can not associate NS %u with NETNS %s\n", | |
996c9314 | 768 | ns->ns_id, ns->name); |
e26aedbe | 769 | else |
0351a28f | 770 | zlog_info("Can not associate NS %u with NETNS %s", |
e26aedbe PG |
771 | ns->ns_id, ns->name); |
772 | return CMD_WARNING_CONFIG_FAILED; | |
773 | } | |
774 | ||
775 | return CMD_SUCCESS; | |
776 | } | |
777 | ||
697d3ec7 | 778 | /* vrf CLI commands */ |
16d6ea59 QY |
779 | DEFUN_NOSH(vrf_exit, |
780 | vrf_exit_cmd, | |
781 | "exit-vrf", | |
782 | "Exit current mode and down to previous mode\n") | |
783 | { | |
784 | /* We have to set vrf context to default vrf */ | |
785 | VTY_PUSH_CONTEXT(VRF_NODE, vrf_get(VRF_DEFAULT, VRF_DEFAULT_NAME)); | |
799a81df | 786 | cmd_exit(vty); |
16d6ea59 QY |
787 | return CMD_SUCCESS; |
788 | } | |
789 | ||
ca77b518 | 790 | DEFUN_YANG_NOSH (vrf, |
697d3ec7 PG |
791 | vrf_cmd, |
792 | "vrf NAME", | |
793 | "Select a VRF to configure\n" | |
794 | "VRF's name\n") | |
795 | { | |
796 | int idx_name = 1; | |
797 | const char *vrfname = argv[idx_name]->arg; | |
798 | ||
799 | return vrf_handler_create(vty, vrfname, NULL); | |
800 | } | |
801 | ||
ca77b518 | 802 | DEFUN_YANG (no_vrf, |
34c46274 RW |
803 | no_vrf_cmd, |
804 | "no vrf NAME", | |
805 | NO_STR | |
806 | "Delete a pseudo VRF's configuration\n" | |
807 | "VRF's name\n") | |
f30c50b9 | 808 | { |
d62a17ae | 809 | const char *vrfname = argv[2]->arg; |
8b4cb7a6 | 810 | char xpath_list[XPATH_MAXLEN]; |
53dc2b05 | 811 | |
d62a17ae | 812 | struct vrf *vrfp; |
f30c50b9 | 813 | |
d62a17ae | 814 | vrfp = vrf_lookup_by_name(vrfname); |
f30c50b9 | 815 | |
cd980d03 IR |
816 | if (vrfp == NULL) |
817 | return CMD_SUCCESS; | |
f30c50b9 | 818 | |
d62a17ae | 819 | if (CHECK_FLAG(vrfp->status, VRF_ACTIVE)) { |
820 | vty_out(vty, "%% Only inactive VRFs can be deleted\n"); | |
821 | return CMD_WARNING_CONFIG_FAILED; | |
822 | } | |
f30c50b9 | 823 | |
8b4cb7a6 CS |
824 | snprintf(xpath_list, sizeof(xpath_list), "/frr-vrf:lib/vrf[name='%s']", |
825 | vrfname); | |
f30c50b9 | 826 | |
8b4cb7a6 CS |
827 | nb_cli_enqueue_change(vty, xpath_list, NB_OP_DESTROY, NULL); |
828 | return nb_cli_apply_changes(vty, xpath_list); | |
f30c50b9 RW |
829 | } |
830 | ||
53dc2b05 | 831 | |
62b346ee | 832 | static struct cmd_node vrf_node = { |
f4b8291f | 833 | .name = "vrf", |
62b346ee | 834 | .node = VRF_NODE, |
24389580 | 835 | .parent_node = CONFIG_NODE, |
62b346ee | 836 | .prompt = "%s(config-vrf)# ", |
62b346ee | 837 | }; |
7ddcfca4 | 838 | |
34c46274 | 839 | DEFUN_NOSH (vrf_netns, |
4a541e8c PG |
840 | vrf_netns_cmd, |
841 | "netns NAME", | |
842 | "Attach VRF to a Namespace\n" | |
843 | "The file name in " NS_RUN_DIR ", or a full pathname\n") | |
e26aedbe | 844 | { |
3bc34908 | 845 | int idx_name = 1, ret; |
e26aedbe PG |
846 | char *pathname = ns_netns_pathname(vty, argv[idx_name]->arg); |
847 | ||
848 | VTY_DECLVAR_CONTEXT(vrf, vrf); | |
849 | ||
850 | if (!pathname) | |
851 | return CMD_WARNING_CONFIG_FAILED; | |
3bc34908 | 852 | |
0cf6db21 | 853 | frr_with_privs(vrf_daemon_privs) { |
6bb30c2c | 854 | ret = vrf_netns_handler_create(vty, vrf, pathname, |
20f4b2b0 PG |
855 | NS_UNKNOWN, |
856 | NS_UNKNOWN, | |
857 | NS_UNKNOWN); | |
6bb30c2c | 858 | } |
3bc34908 | 859 | return ret; |
e26aedbe PG |
860 | } |
861 | ||
34c46274 | 862 | DEFUN_NOSH (no_vrf_netns, |
e26aedbe PG |
863 | no_vrf_netns_cmd, |
864 | "no netns [NAME]", | |
865 | NO_STR | |
866 | "Detach VRF from a Namespace\n" | |
867 | "The file name in " NS_RUN_DIR ", or a full pathname\n") | |
868 | { | |
869 | struct ns *ns = NULL; | |
870 | ||
871 | VTY_DECLVAR_CONTEXT(vrf, vrf); | |
872 | ||
873 | if (!vrf_is_backend_netns()) { | |
874 | vty_out(vty, "VRF backend is not Netns. Aborting\n"); | |
875 | return CMD_WARNING_CONFIG_FAILED; | |
876 | } | |
877 | if (!vrf->ns_ctxt) { | |
878 | vty_out(vty, "VRF %s(%u) is not configured with NetNS\n", | |
879 | vrf->name, vrf->vrf_id); | |
880 | return CMD_WARNING_CONFIG_FAILED; | |
881 | } | |
882 | ||
883 | ns = (struct ns *)vrf->ns_ctxt; | |
884 | ||
885 | ns->vrf_ctxt = NULL; | |
886 | vrf_disable(vrf); | |
887 | /* vrf ID from VRF is necessary for Zebra | |
888 | * so that propagate to other clients is done | |
889 | */ | |
890 | ns_delete(ns); | |
891 | vrf->ns_ctxt = NULL; | |
892 | return CMD_SUCCESS; | |
893 | } | |
894 | ||
19dc275e DS |
895 | /* |
896 | * Debug CLI for vrf's | |
897 | */ | |
898 | DEFUN (vrf_debug, | |
899 | vrf_debug_cmd, | |
900 | "debug vrf", | |
901 | DEBUG_STR | |
902 | "VRF Debugging\n") | |
903 | { | |
d62a17ae | 904 | debug_vrf = 1; |
19dc275e | 905 | |
d62a17ae | 906 | return CMD_SUCCESS; |
19dc275e DS |
907 | } |
908 | ||
909 | DEFUN (no_vrf_debug, | |
910 | no_vrf_debug_cmd, | |
911 | "no debug vrf", | |
912 | NO_STR | |
913 | DEBUG_STR | |
914 | "VRF Debugging\n") | |
915 | { | |
d62a17ae | 916 | debug_vrf = 0; |
19dc275e | 917 | |
d62a17ae | 918 | return CMD_SUCCESS; |
19dc275e DS |
919 | } |
920 | ||
d62a17ae | 921 | static int vrf_write_host(struct vty *vty) |
19dc275e | 922 | { |
d62a17ae | 923 | if (debug_vrf) |
924 | vty_out(vty, "debug vrf\n"); | |
19dc275e | 925 | |
d62a17ae | 926 | return 1; |
19dc275e DS |
927 | } |
928 | ||
612c2c15 | 929 | static int vrf_write_host(struct vty *vty); |
62b346ee | 930 | static struct cmd_node vrf_debug_node = { |
f4b8291f | 931 | .name = "vrf debug", |
62b346ee DL |
932 | .node = VRF_DEBUG_NODE, |
933 | .prompt = "", | |
612c2c15 | 934 | .config_write = vrf_write_host, |
62b346ee | 935 | }; |
19dc275e | 936 | |
d62a17ae | 937 | void vrf_install_commands(void) |
19dc275e | 938 | { |
612c2c15 | 939 | install_node(&vrf_debug_node); |
19dc275e | 940 | |
d62a17ae | 941 | install_element(CONFIG_NODE, &vrf_debug_cmd); |
942 | install_element(ENABLE_NODE, &vrf_debug_cmd); | |
943 | install_element(CONFIG_NODE, &no_vrf_debug_cmd); | |
944 | install_element(ENABLE_NODE, &no_vrf_debug_cmd); | |
19dc275e | 945 | } |
53dc2b05 | 946 | |
3bc34908 PG |
947 | void vrf_cmd_init(int (*writefunc)(struct vty *vty), |
948 | struct zebra_privs_t *daemon_privs) | |
7ddcfca4 | 949 | { |
d62a17ae | 950 | install_element(CONFIG_NODE, &vrf_cmd); |
951 | install_element(CONFIG_NODE, &no_vrf_cmd); | |
612c2c15 DL |
952 | vrf_node.config_write = writefunc; |
953 | install_node(&vrf_node); | |
d62a17ae | 954 | install_default(VRF_NODE); |
16d6ea59 | 955 | install_element(VRF_NODE, &vrf_exit_cmd); |
e26aedbe PG |
956 | if (vrf_is_backend_netns() && ns_have_netns()) { |
957 | /* Install NS commands. */ | |
3bc34908 | 958 | vrf_daemon_privs = daemon_privs; |
e26aedbe PG |
959 | install_element(VRF_NODE, &vrf_netns_cmd); |
960 | install_element(VRF_NODE, &no_vrf_netns_cmd); | |
961 | } | |
19dc275e | 962 | } |
ec31f30d | 963 | |
4fe52e76 | 964 | void vrf_set_default_name(const char *default_name, bool force) |
ec31f30d | 965 | { |
c200f5e1 | 966 | struct vrf *def_vrf; |
4fe52e76 | 967 | static bool def_vrf_forced; |
ec31f30d | 968 | |
c200f5e1 PG |
969 | def_vrf = vrf_lookup_by_id(VRF_DEFAULT); |
970 | assert(default_name); | |
4fe52e76 PG |
971 | if (def_vrf && !force && def_vrf_forced) { |
972 | zlog_debug("VRF: %s, avoid changing name to %s, previously forced (%u)", | |
973 | def_vrf->name, default_name, | |
974 | def_vrf->vrf_id); | |
975 | return; | |
976 | } | |
87272aff PG |
977 | if (strmatch(vrf_default_name, default_name)) |
978 | return; | |
c200f5e1 PG |
979 | snprintf(vrf_default_name, VRF_NAMSIZ, "%s", default_name); |
980 | if (def_vrf) { | |
4fe52e76 PG |
981 | if (force) |
982 | def_vrf_forced = true; | |
c200f5e1 PG |
983 | RB_REMOVE(vrf_name_head, &vrfs_by_name, def_vrf); |
984 | strlcpy(def_vrf->data.l.netns_name, | |
985 | vrf_default_name, NS_NAMSIZ); | |
986 | strlcpy(def_vrf->name, vrf_default_name, sizeof(def_vrf->name)); | |
987 | RB_INSERT(vrf_name_head, &vrfs_by_name, def_vrf); | |
ecbc5a37 PG |
988 | if (vrf_master.vrf_update_name_hook) |
989 | (*vrf_master.vrf_update_name_hook)(def_vrf); | |
c200f5e1 PG |
990 | } |
991 | } | |
992 | ||
993 | const char *vrf_get_default_name(void) | |
994 | { | |
995 | return vrf_default_name; | |
996 | } | |
997 | ||
02fe07c7 | 998 | int vrf_bind(vrf_id_t vrf_id, int fd, const char *name) |
0f4977c6 PG |
999 | { |
1000 | int ret = 0; | |
91f854f6 | 1001 | struct interface *ifp; |
0f4977c6 | 1002 | |
a36898e7 | 1003 | if (fd < 0 || name == NULL) |
0f4977c6 | 1004 | return fd; |
91f854f6 PG |
1005 | /* the device should exist |
1006 | * otherwise we should return | |
1007 | * case ifname = vrf in netns mode => return | |
1008 | */ | |
a36898e7 | 1009 | ifp = if_lookup_by_name(name, vrf_id); |
91f854f6 | 1010 | if (!ifp) |
0f4977c6 PG |
1011 | return fd; |
1012 | #ifdef SO_BINDTODEVICE | |
c9c70dd1 | 1013 | ret = setsockopt(fd, SOL_SOCKET, SO_BINDTODEVICE, name, strlen(name)+1); |
0f4977c6 | 1014 | if (ret < 0) |
996c9314 LB |
1015 | zlog_debug("bind to interface %s failed, errno=%d", name, |
1016 | errno); | |
0f4977c6 PG |
1017 | #endif /* SO_BINDTODEVICE */ |
1018 | return ret; | |
1019 | } | |
2e0d2b3d | 1020 | int vrf_getaddrinfo(const char *node, const char *service, |
996c9314 LB |
1021 | const struct addrinfo *hints, struct addrinfo **res, |
1022 | vrf_id_t vrf_id) | |
2e0d2b3d PG |
1023 | { |
1024 | int ret, ret2, save_errno; | |
1025 | ||
1026 | ret = vrf_switch_to_netns(vrf_id); | |
1027 | if (ret < 0) | |
450971aa | 1028 | flog_err_sys(EC_LIB_SOCKET, "%s: Can't switch to VRF %u (%s)", |
09c866e3 | 1029 | __func__, vrf_id, safe_strerror(errno)); |
2e0d2b3d PG |
1030 | ret = getaddrinfo(node, service, hints, res); |
1031 | save_errno = errno; | |
1032 | ret2 = vrf_switchback_to_initial(); | |
1033 | if (ret2 < 0) | |
450971aa | 1034 | flog_err_sys(EC_LIB_SOCKET, |
09c866e3 QY |
1035 | "%s: Can't switchback from VRF %u (%s)", __func__, |
1036 | vrf_id, safe_strerror(errno)); | |
2e0d2b3d PG |
1037 | errno = save_errno; |
1038 | return ret; | |
1039 | } | |
1040 | ||
516d7591 PG |
1041 | int vrf_ioctl(vrf_id_t vrf_id, int d, unsigned long request, char *params) |
1042 | { | |
1043 | int ret, saved_errno, rc; | |
1044 | ||
1045 | ret = vrf_switch_to_netns(vrf_id); | |
1046 | if (ret < 0) { | |
450971aa | 1047 | flog_err_sys(EC_LIB_SOCKET, "%s: Can't switch to VRF %u (%s)", |
09c866e3 | 1048 | __func__, vrf_id, safe_strerror(errno)); |
516d7591 PG |
1049 | return 0; |
1050 | } | |
1051 | rc = ioctl(d, request, params); | |
1052 | saved_errno = errno; | |
1053 | ret = vrf_switchback_to_initial(); | |
1054 | if (ret < 0) | |
450971aa | 1055 | flog_err_sys(EC_LIB_SOCKET, |
09c866e3 QY |
1056 | "%s: Can't switchback from VRF %u (%s)", __func__, |
1057 | vrf_id, safe_strerror(errno)); | |
516d7591 PG |
1058 | errno = saved_errno; |
1059 | return rc; | |
1060 | } | |
1061 | ||
0f4977c6 | 1062 | int vrf_sockunion_socket(const union sockunion *su, vrf_id_t vrf_id, |
02fe07c7 | 1063 | const char *interfacename) |
2e0d2b3d PG |
1064 | { |
1065 | int ret, save_errno, ret2; | |
1066 | ||
1067 | ret = vrf_switch_to_netns(vrf_id); | |
1068 | if (ret < 0) | |
450971aa | 1069 | flog_err_sys(EC_LIB_SOCKET, "%s: Can't switch to VRF %u (%s)", |
09c866e3 | 1070 | __func__, vrf_id, safe_strerror(errno)); |
2e0d2b3d PG |
1071 | ret = sockunion_socket(su); |
1072 | save_errno = errno; | |
1073 | ret2 = vrf_switchback_to_initial(); | |
1074 | if (ret2 < 0) | |
450971aa | 1075 | flog_err_sys(EC_LIB_SOCKET, |
09c866e3 QY |
1076 | "%s: Can't switchback from VRF %u (%s)", __func__, |
1077 | vrf_id, safe_strerror(errno)); | |
2e0d2b3d | 1078 | errno = save_errno; |
0f4977c6 PG |
1079 | |
1080 | if (ret <= 0) | |
1081 | return ret; | |
1082 | ret2 = vrf_bind(vrf_id, ret, interfacename); | |
1083 | if (ret2 < 0) { | |
1084 | close(ret); | |
1085 | ret = ret2; | |
1086 | } | |
2e0d2b3d PG |
1087 | return ret; |
1088 | } | |
0b014ea6 PG |
1089 | |
1090 | vrf_id_t vrf_generate_id(void) | |
1091 | { | |
1092 | static int vrf_id_local; | |
1093 | ||
1094 | return ++vrf_id_local; | |
1095 | } | |
bc867a5d CS |
1096 | |
1097 | /* ------- Northbound callbacks ------- */ | |
1098 | ||
1099 | /* | |
1100 | * XPath: /frr-vrf:lib/vrf | |
1101 | */ | |
60ee8be1 | 1102 | static int lib_vrf_create(struct nb_cb_create_args *args) |
bc867a5d CS |
1103 | { |
1104 | const char *vrfname; | |
1105 | struct vrf *vrfp; | |
1106 | ||
60ee8be1 | 1107 | vrfname = yang_dnode_get_string(args->dnode, "./name"); |
bc867a5d | 1108 | |
60ee8be1 | 1109 | if (args->event != NB_EV_APPLY) |
bc867a5d CS |
1110 | return NB_OK; |
1111 | ||
1112 | vrfp = vrf_get(VRF_UNKNOWN, vrfname); | |
1113 | ||
18e196f6 | 1114 | vrf_set_user_cfged(vrfp); |
60ee8be1 | 1115 | nb_running_set_entry(args->dnode, vrfp); |
bc867a5d CS |
1116 | |
1117 | return NB_OK; | |
1118 | } | |
1119 | ||
60ee8be1 | 1120 | static int lib_vrf_destroy(struct nb_cb_destroy_args *args) |
bc867a5d CS |
1121 | { |
1122 | struct vrf *vrfp; | |
1123 | ||
60ee8be1 | 1124 | switch (args->event) { |
bc867a5d | 1125 | case NB_EV_VALIDATE: |
60ee8be1 | 1126 | vrfp = nb_running_get_entry(args->dnode, NULL, true); |
bc867a5d | 1127 | if (CHECK_FLAG(vrfp->status, VRF_ACTIVE)) { |
10bdc68f RW |
1128 | snprintf(args->errmsg, args->errmsg_len, |
1129 | "Only inactive VRFs can be deleted"); | |
bc867a5d CS |
1130 | return NB_ERR_VALIDATION; |
1131 | } | |
1132 | break; | |
1133 | case NB_EV_PREPARE: | |
1134 | case NB_EV_ABORT: | |
1135 | break; | |
1136 | case NB_EV_APPLY: | |
60ee8be1 | 1137 | vrfp = nb_running_unset_entry(args->dnode); |
8b4cb7a6 | 1138 | |
bc867a5d | 1139 | /* Clear configured flag and invoke delete. */ |
18e196f6 | 1140 | vrf_reset_user_cfged(vrfp); |
bc867a5d CS |
1141 | vrf_delete(vrfp); |
1142 | break; | |
1143 | } | |
1144 | ||
1145 | return NB_OK; | |
1146 | } | |
1147 | ||
60ee8be1 | 1148 | static const void *lib_vrf_get_next(struct nb_cb_get_next_args *args) |
bc867a5d | 1149 | { |
60ee8be1 | 1150 | struct vrf *vrfp = (struct vrf *)args->list_entry; |
bc867a5d | 1151 | |
60ee8be1 | 1152 | if (args->list_entry == NULL) { |
bc867a5d CS |
1153 | vrfp = RB_MIN(vrf_name_head, &vrfs_by_name); |
1154 | } else { | |
1155 | vrfp = RB_NEXT(vrf_name_head, vrfp); | |
1156 | } | |
1157 | ||
1158 | return vrfp; | |
1159 | } | |
1160 | ||
60ee8be1 | 1161 | static int lib_vrf_get_keys(struct nb_cb_get_keys_args *args) |
bc867a5d | 1162 | { |
60ee8be1 | 1163 | struct vrf *vrfp = (struct vrf *)args->list_entry; |
bc867a5d | 1164 | |
60ee8be1 RW |
1165 | args->keys->num = 1; |
1166 | strlcpy(args->keys->key[0], vrfp->name, sizeof(args->keys->key[0])); | |
bc867a5d CS |
1167 | |
1168 | return NB_OK; | |
1169 | } | |
1170 | ||
60ee8be1 | 1171 | static const void *lib_vrf_lookup_entry(struct nb_cb_lookup_entry_args *args) |
bc867a5d | 1172 | { |
60ee8be1 | 1173 | const char *vrfname = args->keys->key[0]; |
bc867a5d CS |
1174 | |
1175 | struct vrf *vrf = vrf_lookup_by_name(vrfname); | |
1176 | ||
1177 | return vrf; | |
1178 | } | |
1179 | ||
1180 | /* | |
1181 | * XPath: /frr-vrf:lib/vrf/id | |
1182 | */ | |
60ee8be1 RW |
1183 | static struct yang_data * |
1184 | lib_vrf_state_id_get_elem(struct nb_cb_get_elem_args *args) | |
bc867a5d | 1185 | { |
60ee8be1 | 1186 | struct vrf *vrfp = (struct vrf *)args->list_entry; |
bc867a5d | 1187 | |
60ee8be1 | 1188 | return yang_data_new_uint32(args->xpath, vrfp->vrf_id); |
bc867a5d CS |
1189 | } |
1190 | ||
1191 | /* | |
1192 | * XPath: /frr-vrf:lib/vrf/active | |
1193 | */ | |
60ee8be1 RW |
1194 | static struct yang_data * |
1195 | lib_vrf_state_active_get_elem(struct nb_cb_get_elem_args *args) | |
bc867a5d | 1196 | { |
60ee8be1 | 1197 | struct vrf *vrfp = (struct vrf *)args->list_entry; |
bc867a5d CS |
1198 | |
1199 | if (vrfp->status == VRF_ACTIVE) | |
1200 | return yang_data_new_bool( | |
60ee8be1 | 1201 | args->xpath, vrfp->status == VRF_ACTIVE ? true : false); |
bc867a5d CS |
1202 | |
1203 | return NULL; | |
1204 | } | |
1205 | ||
1206 | /* clang-format off */ | |
1207 | const struct frr_yang_module_info frr_vrf_info = { | |
1208 | .name = "frr-vrf", | |
1209 | .nodes = { | |
1210 | { | |
1211 | .xpath = "/frr-vrf:lib/vrf", | |
1212 | .cbs = { | |
1213 | .create = lib_vrf_create, | |
1214 | .destroy = lib_vrf_destroy, | |
1215 | .get_next = lib_vrf_get_next, | |
1216 | .get_keys = lib_vrf_get_keys, | |
1217 | .lookup_entry = lib_vrf_lookup_entry, | |
1218 | } | |
1219 | }, | |
1220 | { | |
1221 | .xpath = "/frr-vrf:lib/vrf/state/id", | |
1222 | .cbs = { | |
1223 | .get_elem = lib_vrf_state_id_get_elem, | |
1224 | } | |
1225 | }, | |
1226 | { | |
1227 | .xpath = "/frr-vrf:lib/vrf/state/active", | |
1228 | .cbs = { | |
1229 | .get_elem = lib_vrf_state_active_get_elem, | |
1230 | } | |
1231 | }, | |
1232 | { | |
1233 | .xpath = NULL, | |
1234 | }, | |
1235 | } | |
1236 | }; | |
1237 |