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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" |
19dc275e | 39 | |
ec31f30d PG |
40 | /* default VRF ID value used when VRF backend is not NETNS */ |
41 | #define VRF_DEFAULT_INTERNAL 0 | |
dd114702 | 42 | #define VRF_DEFAULT_NAME_INTERNAL "default" |
ec31f30d | 43 | |
d62a17ae | 44 | DEFINE_MTYPE_STATIC(LIB, VRF, "VRF") |
4a1ab8e4 DL |
45 | DEFINE_MTYPE_STATIC(LIB, VRF_BITMAP, "VRF bit-map") |
46 | ||
e80e7cce DL |
47 | DEFINE_QOBJ_TYPE(vrf) |
48 | ||
d62a17ae | 49 | static __inline int vrf_id_compare(const struct vrf *, const struct vrf *); |
50 | static __inline int vrf_name_compare(const struct vrf *, const struct vrf *); | |
1a1a7065 | 51 | |
d62a17ae | 52 | RB_GENERATE(vrf_id_head, vrf, id_entry, vrf_id_compare); |
53 | RB_GENERATE(vrf_name_head, vrf, name_entry, vrf_name_compare); | |
1a1a7065 | 54 | |
d62a17ae | 55 | struct vrf_id_head vrfs_by_id = RB_INITIALIZER(&vrfs_by_id); |
56 | struct vrf_name_head vrfs_by_name = RB_INITIALIZER(&vrfs_by_name); | |
1a1a7065 | 57 | |
78dd30b2 | 58 | static int vrf_backend; |
72261ecd | 59 | static int vrf_backend_configured; |
3bc34908 | 60 | static struct zebra_privs_t *vrf_daemon_privs; |
c200f5e1 | 61 | static char vrf_default_name[VRF_NAMSIZ] = VRF_DEFAULT_NAME_INTERNAL; |
78dd30b2 | 62 | |
19dc275e DS |
63 | /* |
64 | * Turn on/off debug code | |
65 | * for vrf. | |
66 | */ | |
c17faa4b | 67 | static int debug_vrf = 0; |
b72ede27 | 68 | |
b72ede27 | 69 | /* Holding VRF hooks */ |
1b3e9a21 | 70 | static struct vrf_master { |
d62a17ae | 71 | int (*vrf_new_hook)(struct vrf *); |
72 | int (*vrf_delete_hook)(struct vrf *); | |
73 | int (*vrf_enable_hook)(struct vrf *); | |
74 | int (*vrf_disable_hook)(struct vrf *); | |
ecbc5a37 | 75 | int (*vrf_update_name_hook)(struct vrf *vrf); |
d62a17ae | 76 | } vrf_master = { |
77 | 0, | |
78 | }; | |
b72ede27 | 79 | |
d62a17ae | 80 | static int vrf_is_enabled(struct vrf *vrf); |
e5bf3e1e | 81 | |
216b18ef | 82 | /* VRF list existance check by name. */ |
d62a17ae | 83 | struct vrf *vrf_lookup_by_name(const char *name) |
216b18ef | 84 | { |
d62a17ae | 85 | struct vrf vrf; |
86 | strlcpy(vrf.name, name, sizeof(vrf.name)); | |
87 | return (RB_FIND(vrf_name_head, &vrfs_by_name, &vrf)); | |
216b18ef | 88 | } |
216b18ef | 89 | |
d62a17ae | 90 | static __inline int vrf_id_compare(const struct vrf *a, const struct vrf *b) |
b72ede27 | 91 | { |
d62a17ae | 92 | return (a->vrf_id - b->vrf_id); |
216b18ef DS |
93 | } |
94 | ||
d62a17ae | 95 | static int vrf_name_compare(const struct vrf *a, const struct vrf *b) |
b72ede27 | 96 | { |
d62a17ae | 97 | return strcmp(a->name, b->name); |
b72ede27 FL |
98 | } |
99 | ||
e26aedbe PG |
100 | /* if ns_id is different and not VRF_UNKNOWN, |
101 | * then update vrf identifier, and enable VRF | |
102 | */ | |
103 | static void vrf_update_vrf_id(ns_id_t ns_id, void *opaqueptr) | |
104 | { | |
105 | ns_id_t vrf_id = (vrf_id_t)ns_id; | |
106 | vrf_id_t old_vrf_id; | |
107 | struct vrf *vrf = (struct vrf *)opaqueptr; | |
108 | ||
109 | if (!vrf) | |
110 | return; | |
111 | old_vrf_id = vrf->vrf_id; | |
112 | if (vrf_id == vrf->vrf_id) | |
113 | return; | |
114 | if (vrf->vrf_id != VRF_UNKNOWN) | |
115 | RB_REMOVE(vrf_id_head, &vrfs_by_id, vrf); | |
116 | vrf->vrf_id = vrf_id; | |
117 | RB_INSERT(vrf_id_head, &vrfs_by_id, vrf); | |
118 | if (old_vrf_id == VRF_UNKNOWN) | |
c4efd0f4 | 119 | vrf_enable(vrf); |
e26aedbe PG |
120 | } |
121 | ||
ce1be369 PG |
122 | int vrf_switch_to_netns(vrf_id_t vrf_id) |
123 | { | |
124 | char *name; | |
125 | struct vrf *vrf = vrf_lookup_by_id(vrf_id); | |
126 | ||
ce1be369 | 127 | /* VRF is default VRF. silently ignore */ |
e26aedbe | 128 | if (!vrf || vrf->vrf_id == VRF_DEFAULT) |
9dff1132 | 129 | return 1; /* 1 = default */ |
e26aedbe PG |
130 | /* VRF has no NETNS backend. silently ignore */ |
131 | if (vrf->data.l.netns_name[0] == '\0') | |
9dff1132 | 132 | return 2; /* 2 = no netns */ |
ce1be369 PG |
133 | name = ns_netns_pathname(NULL, vrf->data.l.netns_name); |
134 | if (debug_vrf) | |
135 | zlog_debug("VRF_SWITCH: %s(%u)", name, vrf->vrf_id); | |
136 | return ns_switch_to_netns(name); | |
137 | } | |
138 | ||
139 | int vrf_switchback_to_initial(void) | |
140 | { | |
141 | int ret = ns_switchback_to_initial(); | |
142 | ||
143 | if (ret == 0 && debug_vrf) | |
144 | zlog_debug("VRF_SWITCHBACK"); | |
145 | return ret; | |
146 | } | |
147 | ||
216b18ef | 148 | /* Get a VRF. If not found, create one. |
34f8e6af DS |
149 | * Arg: |
150 | * name - The name of the vrf. May be NULL if unknown. | |
151 | * vrf_id - The vrf_id of the vrf. May be VRF_UNKNOWN if unknown | |
216b18ef | 152 | * Description: Please note that this routine can be called with just the name |
34f8e6af DS |
153 | * and 0 vrf-id |
154 | */ | |
d62a17ae | 155 | struct vrf *vrf_get(vrf_id_t vrf_id, const char *name) |
156 | { | |
157 | struct vrf *vrf = NULL; | |
158 | int new = 0; | |
159 | ||
160 | if (debug_vrf) | |
996c9314 LB |
161 | zlog_debug("VRF_GET: %s(%u)", name == NULL ? "(NULL)" : name, |
162 | vrf_id); | |
d62a17ae | 163 | |
164 | /* Nothing to see, move along here */ | |
165 | if (!name && vrf_id == VRF_UNKNOWN) | |
166 | return NULL; | |
167 | ||
0c2bac38 PG |
168 | /* attempt to find already available VRF |
169 | */ | |
170 | if (name) | |
171 | vrf = vrf_lookup_by_name(name); | |
dd114702 PG |
172 | if (vrf && vrf_id != VRF_UNKNOWN |
173 | && vrf->vrf_id != VRF_UNKNOWN | |
174 | && vrf->vrf_id != vrf_id) { | |
175 | zlog_debug("VRF_GET: avoid %s creation(%u), same name exists (%u)", | |
176 | name, vrf_id, vrf->vrf_id); | |
177 | return NULL; | |
178 | } | |
d62a17ae | 179 | /* Try to find VRF both by ID and name */ |
0c2bac38 | 180 | if (!vrf && vrf_id != VRF_UNKNOWN) |
d62a17ae | 181 | vrf = vrf_lookup_by_id(vrf_id); |
d62a17ae | 182 | |
183 | if (vrf == NULL) { | |
184 | vrf = XCALLOC(MTYPE_VRF, sizeof(struct vrf)); | |
185 | vrf->vrf_id = VRF_UNKNOWN; | |
d62a17ae | 186 | QOBJ_REG(vrf, vrf); |
187 | new = 1; | |
188 | ||
189 | if (debug_vrf) | |
190 | zlog_debug("VRF(%u) %s is created.", vrf_id, | |
191 | (name) ? name : "(NULL)"); | |
192 | } | |
193 | ||
194 | /* Set identifier */ | |
195 | if (vrf_id != VRF_UNKNOWN && vrf->vrf_id == VRF_UNKNOWN) { | |
196 | vrf->vrf_id = vrf_id; | |
197 | RB_INSERT(vrf_id_head, &vrfs_by_id, vrf); | |
198 | } | |
199 | ||
200 | /* Set name */ | |
201 | if (name && vrf->name[0] != '\0' && strcmp(name, vrf->name)) { | |
87272aff | 202 | /* update the vrf name */ |
d62a17ae | 203 | RB_REMOVE(vrf_name_head, &vrfs_by_name, vrf); |
87272aff PG |
204 | strlcpy(vrf->data.l.netns_name, |
205 | name, NS_NAMSIZ); | |
d62a17ae | 206 | strlcpy(vrf->name, name, sizeof(vrf->name)); |
207 | RB_INSERT(vrf_name_head, &vrfs_by_name, vrf); | |
87272aff PG |
208 | if (vrf->vrf_id == VRF_DEFAULT) |
209 | vrf_set_default_name(vrf->name, false); | |
d62a17ae | 210 | } else if (name && vrf->name[0] == '\0') { |
211 | strlcpy(vrf->name, name, sizeof(vrf->name)); | |
212 | RB_INSERT(vrf_name_head, &vrfs_by_name, vrf); | |
213 | } | |
d62a17ae | 214 | if (new &&vrf_master.vrf_new_hook) |
215 | (*vrf_master.vrf_new_hook)(vrf); | |
216 | ||
217 | return vrf; | |
b72ede27 FL |
218 | } |
219 | ||
84915b0a | 220 | /* Delete a VRF. This is called when the underlying VRF goes away, a |
221 | * pre-configured VRF is deleted or when shutting down (vrf_terminate()). | |
222 | */ | |
d62a17ae | 223 | void vrf_delete(struct vrf *vrf) |
b72ede27 | 224 | { |
d62a17ae | 225 | if (debug_vrf) |
226 | zlog_debug("VRF %u is to be deleted.", vrf->vrf_id); | |
b72ede27 | 227 | |
d62a17ae | 228 | if (vrf_is_enabled(vrf)) |
229 | vrf_disable(vrf); | |
e5bf3e1e | 230 | |
84915b0a | 231 | /* If the VRF is user configured, it'll stick around, just remove |
232 | * the ID mapping. Interfaces assigned to this VRF should've been | |
233 | * removed already as part of the VRF going down. | |
234 | */ | |
235 | if (vrf_is_user_cfged(vrf)) { | |
236 | if (vrf->vrf_id != VRF_UNKNOWN) { | |
237 | /* Delete any VRF interfaces - should be only | |
238 | * the VRF itself, other interfaces should've | |
239 | * been moved out of the VRF. | |
240 | */ | |
241 | if_terminate(vrf); | |
242 | RB_REMOVE(vrf_id_head, &vrfs_by_id, vrf); | |
243 | vrf->vrf_id = VRF_UNKNOWN; | |
244 | } | |
245 | return; | |
246 | } | |
247 | ||
d62a17ae | 248 | if (vrf_master.vrf_delete_hook) |
249 | (*vrf_master.vrf_delete_hook)(vrf); | |
216b18ef | 250 | |
d62a17ae | 251 | QOBJ_UNREG(vrf); |
f4e14fdb | 252 | if_terminate(vrf); |
b72ede27 | 253 | |
d62a17ae | 254 | if (vrf->vrf_id != VRF_UNKNOWN) |
255 | RB_REMOVE(vrf_id_head, &vrfs_by_id, vrf); | |
256 | if (vrf->name[0] != '\0') | |
257 | RB_REMOVE(vrf_name_head, &vrfs_by_name, vrf); | |
b72ede27 | 258 | |
d62a17ae | 259 | XFREE(MTYPE_VRF, vrf); |
b72ede27 FL |
260 | } |
261 | ||
262 | /* Look up a VRF by identifier. */ | |
d62a17ae | 263 | struct vrf *vrf_lookup_by_id(vrf_id_t vrf_id) |
b72ede27 | 264 | { |
d62a17ae | 265 | struct vrf vrf; |
266 | vrf.vrf_id = vrf_id; | |
267 | return (RB_FIND(vrf_id_head, &vrfs_by_id, &vrf)); | |
b72ede27 FL |
268 | } |
269 | ||
e5bf3e1e FL |
270 | /* |
271 | * Enable a VRF - that is, let the VRF be ready to use. | |
272 | * The VRF_ENABLE_HOOK callback will be called to inform | |
273 | * that they can allocate resources in this VRF. | |
274 | * | |
275 | * RETURN: 1 - enabled successfully; otherwise, 0. | |
276 | */ | |
d62a17ae | 277 | int vrf_enable(struct vrf *vrf) |
e5bf3e1e | 278 | { |
d62a17ae | 279 | if (vrf_is_enabled(vrf)) |
280 | return 1; | |
05e8e11e | 281 | |
d62a17ae | 282 | if (debug_vrf) |
283 | zlog_debug("VRF %u is enabled.", vrf->vrf_id); | |
e5bf3e1e | 284 | |
d62a17ae | 285 | SET_FLAG(vrf->status, VRF_ACTIVE); |
e5bf3e1e | 286 | |
d62a17ae | 287 | if (vrf_master.vrf_enable_hook) |
288 | (*vrf_master.vrf_enable_hook)(vrf); | |
e5bf3e1e | 289 | |
98cbbaea DS |
290 | /* |
291 | * If we have any nexthop group entries that | |
292 | * are awaiting vrf initialization then | |
293 | * let's let people know about it | |
294 | */ | |
295 | nexthop_group_enable_vrf(vrf); | |
296 | ||
d62a17ae | 297 | return 1; |
e5bf3e1e FL |
298 | } |
299 | ||
300 | /* | |
301 | * Disable a VRF - that is, let the VRF be unusable. | |
302 | * The VRF_DELETE_HOOK callback will be called to inform | |
303 | * that they must release the resources in the VRF. | |
304 | */ | |
697d3ec7 | 305 | void vrf_disable(struct vrf *vrf) |
e5bf3e1e | 306 | { |
d62a17ae | 307 | if (!vrf_is_enabled(vrf)) |
308 | return; | |
a647bfa8 | 309 | |
d62a17ae | 310 | UNSET_FLAG(vrf->status, VRF_ACTIVE); |
e5bf3e1e | 311 | |
d62a17ae | 312 | if (debug_vrf) |
313 | zlog_debug("VRF %u is to be disabled.", vrf->vrf_id); | |
e5bf3e1e | 314 | |
d62a17ae | 315 | /* Till now, nothing to be done for the default VRF. */ |
316 | // Pending: see why this statement. | |
e74f14fc | 317 | |
d62a17ae | 318 | if (vrf_master.vrf_disable_hook) |
319 | (*vrf_master.vrf_disable_hook)(vrf); | |
e5bf3e1e FL |
320 | } |
321 | ||
b7cfce93 MK |
322 | const char *vrf_id_to_name(vrf_id_t vrf_id) |
323 | { | |
324 | struct vrf *vrf; | |
325 | ||
326 | vrf = vrf_lookup_by_id(vrf_id); | |
327 | if (vrf) | |
328 | return vrf->name; | |
329 | ||
181c08c6 | 330 | return "n/a"; |
b7cfce93 MK |
331 | } |
332 | ||
d62a17ae | 333 | vrf_id_t vrf_name_to_id(const char *name) |
216b18ef | 334 | { |
d62a17ae | 335 | struct vrf *vrf; |
336 | vrf_id_t vrf_id = VRF_DEFAULT; // Pending: need a way to return invalid | |
337 | // id/ routine not used. | |
216b18ef | 338 | |
2569910b PG |
339 | if (!name) |
340 | return vrf_id; | |
d62a17ae | 341 | vrf = vrf_lookup_by_name(name); |
342 | if (vrf) | |
343 | vrf_id = vrf->vrf_id; | |
216b18ef | 344 | |
d62a17ae | 345 | return vrf_id; |
216b18ef DS |
346 | } |
347 | ||
b72ede27 | 348 | /* Get the data pointer of the specified VRF. If not found, create one. */ |
d62a17ae | 349 | void *vrf_info_get(vrf_id_t vrf_id) |
b72ede27 | 350 | { |
d62a17ae | 351 | struct vrf *vrf = vrf_get(vrf_id, NULL); |
352 | return vrf->info; | |
b72ede27 FL |
353 | } |
354 | ||
355 | /* Look up the data pointer of the specified VRF. */ | |
d62a17ae | 356 | void *vrf_info_lookup(vrf_id_t vrf_id) |
b72ede27 | 357 | { |
d62a17ae | 358 | struct vrf *vrf = vrf_lookup_by_id(vrf_id); |
359 | return vrf ? vrf->info : NULL; | |
b72ede27 FL |
360 | } |
361 | ||
7076bb2f | 362 | /* |
4a8bf858 | 363 | * VRF hash for storing set or not. |
7076bb2f | 364 | */ |
4a8bf858 DS |
365 | struct vrf_bit_set { |
366 | vrf_id_t vrf_id; | |
367 | bool set; | |
368 | }; | |
7076bb2f | 369 | |
d8b87afe | 370 | static unsigned int vrf_hash_bitmap_key(const void *data) |
4a8bf858 | 371 | { |
d8b87afe | 372 | const struct vrf_bit_set *bit = data; |
d62a17ae | 373 | |
4a8bf858 DS |
374 | return bit->vrf_id; |
375 | } | |
d62a17ae | 376 | |
74df8d6d | 377 | static bool vrf_hash_bitmap_cmp(const void *a, const void *b) |
4a8bf858 DS |
378 | { |
379 | const struct vrf_bit_set *bit1 = a; | |
380 | const struct vrf_bit_set *bit2 = b; | |
d62a17ae | 381 | |
4a8bf858 DS |
382 | return bit1->vrf_id == bit2->vrf_id; |
383 | } | |
384 | ||
385 | static void *vrf_hash_bitmap_alloc(void *data) | |
386 | { | |
387 | struct vrf_bit_set *copy = data; | |
388 | struct vrf_bit_set *bit; | |
389 | ||
390 | bit = XMALLOC(MTYPE_VRF_BITMAP, sizeof(*bit)); | |
391 | bit->vrf_id = copy->vrf_id; | |
392 | ||
393 | return bit; | |
394 | } | |
395 | ||
396 | static void vrf_hash_bitmap_free(void *data) | |
397 | { | |
398 | struct vrf_bit_set *bit = data; | |
399 | ||
400 | XFREE(MTYPE_VRF_BITMAP, bit); | |
401 | } | |
7076bb2f | 402 | |
d62a17ae | 403 | vrf_bitmap_t vrf_bitmap_init(void) |
7076bb2f | 404 | { |
4a8bf858 DS |
405 | return hash_create_size(32, vrf_hash_bitmap_key, vrf_hash_bitmap_cmp, |
406 | "VRF BIT HASH"); | |
7076bb2f FL |
407 | } |
408 | ||
d62a17ae | 409 | void vrf_bitmap_free(vrf_bitmap_t bmap) |
7076bb2f | 410 | { |
4a8bf858 | 411 | struct hash *vrf_hash = bmap; |
7076bb2f | 412 | |
4a8bf858 | 413 | if (vrf_hash == NULL) |
d62a17ae | 414 | return; |
7076bb2f | 415 | |
4a8bf858 DS |
416 | hash_clean(vrf_hash, vrf_hash_bitmap_free); |
417 | hash_free(vrf_hash); | |
7076bb2f FL |
418 | } |
419 | ||
d62a17ae | 420 | void vrf_bitmap_set(vrf_bitmap_t bmap, vrf_id_t vrf_id) |
7076bb2f | 421 | { |
4a8bf858 DS |
422 | struct vrf_bit_set lookup = { .vrf_id = vrf_id }; |
423 | struct hash *vrf_hash = bmap; | |
424 | struct vrf_bit_set *bit; | |
7076bb2f | 425 | |
4a8bf858 | 426 | if (vrf_hash == NULL || vrf_id == VRF_UNKNOWN) |
d62a17ae | 427 | return; |
7076bb2f | 428 | |
4a8bf858 DS |
429 | bit = hash_get(vrf_hash, &lookup, vrf_hash_bitmap_alloc); |
430 | bit->set = true; | |
7076bb2f FL |
431 | } |
432 | ||
d62a17ae | 433 | void vrf_bitmap_unset(vrf_bitmap_t bmap, vrf_id_t vrf_id) |
7076bb2f | 434 | { |
4a8bf858 DS |
435 | struct vrf_bit_set lookup = { .vrf_id = vrf_id }; |
436 | struct hash *vrf_hash = bmap; | |
437 | struct vrf_bit_set *bit; | |
7076bb2f | 438 | |
4a8bf858 | 439 | if (vrf_hash == NULL || vrf_id == VRF_UNKNOWN) |
d62a17ae | 440 | return; |
7076bb2f | 441 | |
4a8bf858 DS |
442 | bit = hash_get(vrf_hash, &lookup, vrf_hash_bitmap_alloc); |
443 | bit->set = false; | |
7076bb2f FL |
444 | } |
445 | ||
d62a17ae | 446 | int vrf_bitmap_check(vrf_bitmap_t bmap, vrf_id_t vrf_id) |
7076bb2f | 447 | { |
4a8bf858 DS |
448 | struct vrf_bit_set lookup = { .vrf_id = vrf_id }; |
449 | struct hash *vrf_hash = bmap; | |
450 | struct vrf_bit_set *bit; | |
7076bb2f | 451 | |
4a8bf858 | 452 | if (vrf_hash == NULL || vrf_id == VRF_UNKNOWN) |
d62a17ae | 453 | return 0; |
7076bb2f | 454 | |
4a8bf858 DS |
455 | bit = hash_lookup(vrf_hash, &lookup); |
456 | if (bit) | |
457 | return bit->set; | |
458 | ||
459 | return 0; | |
7076bb2f FL |
460 | } |
461 | ||
d62a17ae | 462 | static void vrf_autocomplete(vector comps, struct cmd_token *token) |
d617d5fe | 463 | { |
d62a17ae | 464 | struct vrf *vrf = NULL; |
d617d5fe | 465 | |
723001fc PG |
466 | RB_FOREACH (vrf, vrf_name_head, &vrfs_by_name) |
467 | vector_set(comps, XSTRDUP(MTYPE_COMPLETION, vrf->name)); | |
d617d5fe DS |
468 | } |
469 | ||
470 | static const struct cmd_variable_handler vrf_var_handlers[] = { | |
d62a17ae | 471 | { |
472 | .varname = "vrf", | |
473 | .completions = vrf_autocomplete, | |
474 | }, | |
e429a2a0 IR |
475 | { |
476 | .varname = "vrf_name", | |
477 | .completions = vrf_autocomplete, | |
478 | }, | |
479 | { | |
480 | .varname = "nexthop_vrf", | |
481 | .completions = vrf_autocomplete, | |
482 | }, | |
d62a17ae | 483 | {.completions = NULL}, |
d617d5fe DS |
484 | }; |
485 | ||
b72ede27 | 486 | /* Initialize VRF module. */ |
d62a17ae | 487 | void vrf_init(int (*create)(struct vrf *), int (*enable)(struct vrf *), |
d01b92fd | 488 | int (*disable)(struct vrf *), int (*destroy)(struct vrf *), |
ecbc5a37 | 489 | int ((*update)(struct vrf *))) |
d62a17ae | 490 | { |
491 | struct vrf *default_vrf; | |
492 | ||
e26aedbe PG |
493 | /* initialise NS, in case VRF backend if NETNS */ |
494 | ns_init(); | |
d62a17ae | 495 | if (debug_vrf) |
15569c58 | 496 | zlog_debug("%s: Initializing VRF subsystem", __func__); |
d62a17ae | 497 | |
498 | vrf_master.vrf_new_hook = create; | |
499 | vrf_master.vrf_enable_hook = enable; | |
500 | vrf_master.vrf_disable_hook = disable; | |
d01b92fd | 501 | vrf_master.vrf_delete_hook = destroy; |
ecbc5a37 | 502 | vrf_master.vrf_update_name_hook = update; |
d62a17ae | 503 | |
504 | /* The default VRF always exists. */ | |
eb6934d5 | 505 | default_vrf = vrf_get(VRF_DEFAULT, VRF_DEFAULT_NAME); |
d62a17ae | 506 | if (!default_vrf) { |
450971aa | 507 | flog_err(EC_LIB_VRF_START, |
1c50c1c0 | 508 | "vrf_init: failed to create the default VRF!"); |
d62a17ae | 509 | exit(1); |
510 | } | |
20c87e98 TC |
511 | if (vrf_is_backend_netns()) { |
512 | struct ns *ns; | |
513 | ||
fdafe17e | 514 | strlcpy(default_vrf->data.l.netns_name, |
eb6934d5 | 515 | VRF_DEFAULT_NAME, NS_NAMSIZ); |
20c87e98 | 516 | ns = ns_lookup(ns_get_default_id()); |
c3568c4d TC |
517 | ns->vrf_ctxt = default_vrf; |
518 | default_vrf->ns_ctxt = ns; | |
20c87e98 | 519 | } |
d62a17ae | 520 | |
521 | /* Enable the default VRF. */ | |
522 | if (!vrf_enable(default_vrf)) { | |
450971aa | 523 | flog_err(EC_LIB_VRF_START, |
1c50c1c0 | 524 | "vrf_init: failed to enable the default VRF!"); |
d62a17ae | 525 | exit(1); |
526 | } | |
527 | ||
528 | cmd_variable_handler_register(vrf_var_handlers); | |
b72ede27 FL |
529 | } |
530 | ||
531 | /* Terminate VRF module. */ | |
d62a17ae | 532 | void vrf_terminate(void) |
b72ede27 | 533 | { |
d62a17ae | 534 | struct vrf *vrf; |
b72ede27 | 535 | |
d62a17ae | 536 | if (debug_vrf) |
15569c58 | 537 | zlog_debug("%s: Shutting down vrf subsystem", __func__); |
19dc275e | 538 | |
55cd0f61 DS |
539 | while (!RB_EMPTY(vrf_id_head, &vrfs_by_id)) { |
540 | vrf = RB_ROOT(vrf_id_head, &vrfs_by_id); | |
541 | ||
65c3a7c4 | 542 | /* Clear configured flag and invoke delete. */ |
543 | UNSET_FLAG(vrf->status, VRF_CONFIGURED); | |
d62a17ae | 544 | vrf_delete(vrf); |
65c3a7c4 | 545 | } |
55cd0f61 DS |
546 | |
547 | while (!RB_EMPTY(vrf_name_head, &vrfs_by_name)) { | |
548 | vrf = RB_ROOT(vrf_name_head, &vrfs_by_name); | |
549 | ||
65c3a7c4 | 550 | /* Clear configured flag and invoke delete. */ |
551 | UNSET_FLAG(vrf->status, VRF_CONFIGURED); | |
d62a17ae | 552 | vrf_delete(vrf); |
65c3a7c4 | 553 | } |
b72ede27 FL |
554 | } |
555 | ||
0f4977c6 | 556 | int vrf_socket(int domain, int type, int protocol, vrf_id_t vrf_id, |
02fe07c7 | 557 | const char *interfacename) |
e5bf3e1e | 558 | { |
2e0d2b3d | 559 | int ret, save_errno, ret2; |
e5bf3e1e | 560 | |
2e0d2b3d PG |
561 | ret = vrf_switch_to_netns(vrf_id); |
562 | if (ret < 0) | |
450971aa | 563 | flog_err_sys(EC_LIB_SOCKET, "%s: Can't switch to VRF %u (%s)", |
09c866e3 | 564 | __func__, vrf_id, safe_strerror(errno)); |
b66d022e | 565 | |
d62a17ae | 566 | ret = socket(domain, type, protocol); |
2e0d2b3d PG |
567 | save_errno = errno; |
568 | ret2 = vrf_switchback_to_initial(); | |
569 | if (ret2 < 0) | |
450971aa | 570 | flog_err_sys(EC_LIB_SOCKET, |
09c866e3 QY |
571 | "%s: Can't switchback from VRF %u (%s)", __func__, |
572 | vrf_id, safe_strerror(errno)); | |
2e0d2b3d | 573 | errno = save_errno; |
0f4977c6 PG |
574 | if (ret <= 0) |
575 | return ret; | |
576 | ret2 = vrf_bind(vrf_id, ret, interfacename); | |
577 | if (ret2 < 0) { | |
578 | close(ret); | |
579 | ret = ret2; | |
580 | } | |
d62a17ae | 581 | return ret; |
e5bf3e1e FL |
582 | } |
583 | ||
78dd30b2 PG |
584 | int vrf_is_backend_netns(void) |
585 | { | |
586 | return (vrf_backend == VRF_BACKEND_NETNS); | |
587 | } | |
588 | ||
589 | int vrf_get_backend(void) | |
590 | { | |
72261ecd PG |
591 | if (!vrf_backend_configured) |
592 | return VRF_BACKEND_UNKNOWN; | |
78dd30b2 PG |
593 | return vrf_backend; |
594 | } | |
595 | ||
596 | void vrf_configure_backend(int vrf_backend_netns) | |
597 | { | |
598 | vrf_backend = vrf_backend_netns; | |
72261ecd | 599 | vrf_backend_configured = 1; |
78dd30b2 PG |
600 | } |
601 | ||
03aff2d8 PG |
602 | int vrf_handler_create(struct vty *vty, const char *vrfname, |
603 | struct vrf **vrf) | |
f30c50b9 | 604 | { |
d62a17ae | 605 | struct vrf *vrfp; |
f30c50b9 | 606 | |
d62a17ae | 607 | if (strlen(vrfname) > VRF_NAMSIZ) { |
697d3ec7 PG |
608 | if (vty) |
609 | vty_out(vty, | |
996c9314 LB |
610 | "%% VRF name %s invalid: length exceeds %d bytes\n", |
611 | vrfname, VRF_NAMSIZ); | |
697d3ec7 | 612 | else |
0351a28f | 613 | flog_warn( |
450971aa | 614 | EC_LIB_VRF_LENGTH, |
996c9314 LB |
615 | "%% VRF name %s invalid: length exceeds %d bytes\n", |
616 | vrfname, VRF_NAMSIZ); | |
d62a17ae | 617 | return CMD_WARNING_CONFIG_FAILED; |
618 | } | |
f30c50b9 | 619 | |
d62a17ae | 620 | vrfp = vrf_get(VRF_UNKNOWN, vrfname); |
f30c50b9 | 621 | |
697d3ec7 PG |
622 | if (vty) |
623 | VTY_PUSH_CONTEXT(VRF_NODE, vrfp); | |
f30c50b9 | 624 | |
697d3ec7 PG |
625 | if (vrf) |
626 | *vrf = vrfp; | |
d62a17ae | 627 | return CMD_SUCCESS; |
f30c50b9 RW |
628 | } |
629 | ||
996c9314 | 630 | int vrf_netns_handler_create(struct vty *vty, struct vrf *vrf, char *pathname, |
03aff2d8 | 631 | ns_id_t ns_id, ns_id_t internal_ns_id) |
e26aedbe PG |
632 | { |
633 | struct ns *ns = NULL; | |
634 | ||
635 | if (!vrf) | |
636 | return CMD_WARNING_CONFIG_FAILED; | |
637 | if (vrf->vrf_id != VRF_UNKNOWN && vrf->ns_ctxt == NULL) { | |
638 | if (vty) | |
639 | vty_out(vty, | |
640 | "VRF %u is already configured with VRF %s\n", | |
641 | vrf->vrf_id, vrf->name); | |
642 | else | |
9165c5f5 | 643 | zlog_info("VRF %u is already configured with VRF %s", |
e26aedbe PG |
644 | vrf->vrf_id, vrf->name); |
645 | return CMD_WARNING_CONFIG_FAILED; | |
646 | } | |
647 | if (vrf->ns_ctxt != NULL) { | |
996c9314 | 648 | ns = (struct ns *)vrf->ns_ctxt; |
2e1cc436 | 649 | if (!strcmp(ns->name, pathname)) { |
e26aedbe PG |
650 | if (vty) |
651 | vty_out(vty, | |
996c9314 LB |
652 | "VRF %u already configured with NETNS %s\n", |
653 | vrf->vrf_id, ns->name); | |
e26aedbe | 654 | else |
0351a28f | 655 | zlog_info( |
ade6974d QY |
656 | "VRF %u already configured with NETNS %s", |
657 | vrf->vrf_id, ns->name); | |
e26aedbe PG |
658 | return CMD_WARNING_CONFIG_FAILED; |
659 | } | |
660 | } | |
661 | ns = ns_lookup_name(pathname); | |
662 | if (ns && ns->vrf_ctxt) { | |
663 | struct vrf *vrf2 = (struct vrf *)ns->vrf_ctxt; | |
664 | ||
665 | if (vrf2 == vrf) | |
666 | return CMD_SUCCESS; | |
667 | if (vty) | |
996c9314 LB |
668 | vty_out(vty, |
669 | "NS %s is already configured" | |
e26aedbe | 670 | " with VRF %u(%s)\n", |
996c9314 | 671 | ns->name, vrf2->vrf_id, vrf2->name); |
e26aedbe | 672 | else |
0351a28f | 673 | zlog_info("NS %s is already configured with VRF %u(%s)", |
e26aedbe PG |
674 | ns->name, vrf2->vrf_id, vrf2->name); |
675 | return CMD_WARNING_CONFIG_FAILED; | |
676 | } | |
677 | ns = ns_get_created(ns, pathname, ns_id); | |
03aff2d8 | 678 | ns->internal_ns_id = internal_ns_id; |
e26aedbe PG |
679 | ns->vrf_ctxt = (void *)vrf; |
680 | vrf->ns_ctxt = (void *)ns; | |
681 | /* update VRF netns NAME */ | |
2e1cc436 | 682 | strlcpy(vrf->data.l.netns_name, basename(pathname), NS_NAMSIZ); |
e26aedbe PG |
683 | |
684 | if (!ns_enable(ns, vrf_update_vrf_id)) { | |
685 | if (vty) | |
686 | vty_out(vty, "Can not associate NS %u with NETNS %s\n", | |
996c9314 | 687 | ns->ns_id, ns->name); |
e26aedbe | 688 | else |
0351a28f | 689 | zlog_info("Can not associate NS %u with NETNS %s", |
e26aedbe PG |
690 | ns->ns_id, ns->name); |
691 | return CMD_WARNING_CONFIG_FAILED; | |
692 | } | |
693 | ||
694 | return CMD_SUCCESS; | |
695 | } | |
696 | ||
697d3ec7 | 697 | /* vrf CLI commands */ |
16d6ea59 QY |
698 | DEFUN_NOSH(vrf_exit, |
699 | vrf_exit_cmd, | |
700 | "exit-vrf", | |
701 | "Exit current mode and down to previous mode\n") | |
702 | { | |
703 | /* We have to set vrf context to default vrf */ | |
704 | VTY_PUSH_CONTEXT(VRF_NODE, vrf_get(VRF_DEFAULT, VRF_DEFAULT_NAME)); | |
705 | vty->node = CONFIG_NODE; | |
706 | return CMD_SUCCESS; | |
707 | } | |
708 | ||
697d3ec7 PG |
709 | DEFUN_NOSH (vrf, |
710 | vrf_cmd, | |
711 | "vrf NAME", | |
712 | "Select a VRF to configure\n" | |
713 | "VRF's name\n") | |
714 | { | |
715 | int idx_name = 1; | |
716 | const char *vrfname = argv[idx_name]->arg; | |
717 | ||
718 | return vrf_handler_create(vty, vrfname, NULL); | |
719 | } | |
720 | ||
34c46274 RW |
721 | DEFUN (no_vrf, |
722 | no_vrf_cmd, | |
723 | "no vrf NAME", | |
724 | NO_STR | |
725 | "Delete a pseudo VRF's configuration\n" | |
726 | "VRF's name\n") | |
f30c50b9 | 727 | { |
d62a17ae | 728 | const char *vrfname = argv[2]->arg; |
53dc2b05 | 729 | |
d62a17ae | 730 | struct vrf *vrfp; |
f30c50b9 | 731 | |
d62a17ae | 732 | vrfp = vrf_lookup_by_name(vrfname); |
f30c50b9 | 733 | |
d62a17ae | 734 | if (vrfp == NULL) { |
735 | vty_out(vty, "%% VRF %s does not exist\n", vrfname); | |
736 | return CMD_WARNING_CONFIG_FAILED; | |
737 | } | |
f30c50b9 | 738 | |
d62a17ae | 739 | if (CHECK_FLAG(vrfp->status, VRF_ACTIVE)) { |
740 | vty_out(vty, "%% Only inactive VRFs can be deleted\n"); | |
741 | return CMD_WARNING_CONFIG_FAILED; | |
742 | } | |
f30c50b9 | 743 | |
84915b0a | 744 | /* Clear configured flag and invoke delete. */ |
745 | UNSET_FLAG(vrfp->status, VRF_CONFIGURED); | |
d62a17ae | 746 | vrf_delete(vrfp); |
f30c50b9 | 747 | |
d62a17ae | 748 | return CMD_SUCCESS; |
f30c50b9 RW |
749 | } |
750 | ||
53dc2b05 | 751 | |
1b3e9a21 | 752 | static struct cmd_node vrf_node = {VRF_NODE, "%s(config-vrf)# ", 1}; |
7ddcfca4 | 753 | |
34c46274 | 754 | DEFUN_NOSH (vrf_netns, |
4a541e8c PG |
755 | vrf_netns_cmd, |
756 | "netns NAME", | |
757 | "Attach VRF to a Namespace\n" | |
758 | "The file name in " NS_RUN_DIR ", or a full pathname\n") | |
e26aedbe | 759 | { |
3bc34908 | 760 | int idx_name = 1, ret; |
e26aedbe PG |
761 | char *pathname = ns_netns_pathname(vty, argv[idx_name]->arg); |
762 | ||
763 | VTY_DECLVAR_CONTEXT(vrf, vrf); | |
764 | ||
765 | if (!pathname) | |
766 | return CMD_WARNING_CONFIG_FAILED; | |
3bc34908 | 767 | |
0cf6db21 | 768 | frr_with_privs(vrf_daemon_privs) { |
6bb30c2c DL |
769 | ret = vrf_netns_handler_create(vty, vrf, pathname, |
770 | NS_UNKNOWN, NS_UNKNOWN); | |
771 | } | |
3bc34908 | 772 | return ret; |
e26aedbe PG |
773 | } |
774 | ||
34c46274 | 775 | DEFUN_NOSH (no_vrf_netns, |
e26aedbe PG |
776 | no_vrf_netns_cmd, |
777 | "no netns [NAME]", | |
778 | NO_STR | |
779 | "Detach VRF from a Namespace\n" | |
780 | "The file name in " NS_RUN_DIR ", or a full pathname\n") | |
781 | { | |
782 | struct ns *ns = NULL; | |
783 | ||
784 | VTY_DECLVAR_CONTEXT(vrf, vrf); | |
785 | ||
786 | if (!vrf_is_backend_netns()) { | |
787 | vty_out(vty, "VRF backend is not Netns. Aborting\n"); | |
788 | return CMD_WARNING_CONFIG_FAILED; | |
789 | } | |
790 | if (!vrf->ns_ctxt) { | |
791 | vty_out(vty, "VRF %s(%u) is not configured with NetNS\n", | |
792 | vrf->name, vrf->vrf_id); | |
793 | return CMD_WARNING_CONFIG_FAILED; | |
794 | } | |
795 | ||
796 | ns = (struct ns *)vrf->ns_ctxt; | |
797 | ||
798 | ns->vrf_ctxt = NULL; | |
799 | vrf_disable(vrf); | |
800 | /* vrf ID from VRF is necessary for Zebra | |
801 | * so that propagate to other clients is done | |
802 | */ | |
803 | ns_delete(ns); | |
804 | vrf->ns_ctxt = NULL; | |
805 | return CMD_SUCCESS; | |
806 | } | |
807 | ||
19dc275e DS |
808 | /* |
809 | * Debug CLI for vrf's | |
810 | */ | |
811 | DEFUN (vrf_debug, | |
812 | vrf_debug_cmd, | |
813 | "debug vrf", | |
814 | DEBUG_STR | |
815 | "VRF Debugging\n") | |
816 | { | |
d62a17ae | 817 | debug_vrf = 1; |
19dc275e | 818 | |
d62a17ae | 819 | return CMD_SUCCESS; |
19dc275e DS |
820 | } |
821 | ||
822 | DEFUN (no_vrf_debug, | |
823 | no_vrf_debug_cmd, | |
824 | "no debug vrf", | |
825 | NO_STR | |
826 | DEBUG_STR | |
827 | "VRF Debugging\n") | |
828 | { | |
d62a17ae | 829 | debug_vrf = 0; |
19dc275e | 830 | |
d62a17ae | 831 | return CMD_SUCCESS; |
19dc275e DS |
832 | } |
833 | ||
d62a17ae | 834 | static int vrf_write_host(struct vty *vty) |
19dc275e | 835 | { |
d62a17ae | 836 | if (debug_vrf) |
837 | vty_out(vty, "debug vrf\n"); | |
19dc275e | 838 | |
d62a17ae | 839 | return 1; |
19dc275e DS |
840 | } |
841 | ||
d62a17ae | 842 | static struct cmd_node vrf_debug_node = {VRF_DEBUG_NODE, "", 1}; |
19dc275e | 843 | |
d62a17ae | 844 | void vrf_install_commands(void) |
19dc275e | 845 | { |
d62a17ae | 846 | install_node(&vrf_debug_node, vrf_write_host); |
19dc275e | 847 | |
d62a17ae | 848 | install_element(CONFIG_NODE, &vrf_debug_cmd); |
849 | install_element(ENABLE_NODE, &vrf_debug_cmd); | |
850 | install_element(CONFIG_NODE, &no_vrf_debug_cmd); | |
851 | install_element(ENABLE_NODE, &no_vrf_debug_cmd); | |
19dc275e | 852 | } |
53dc2b05 | 853 | |
3bc34908 PG |
854 | void vrf_cmd_init(int (*writefunc)(struct vty *vty), |
855 | struct zebra_privs_t *daemon_privs) | |
7ddcfca4 | 856 | { |
d62a17ae | 857 | install_element(CONFIG_NODE, &vrf_cmd); |
858 | install_element(CONFIG_NODE, &no_vrf_cmd); | |
859 | install_node(&vrf_node, writefunc); | |
860 | install_default(VRF_NODE); | |
16d6ea59 | 861 | install_element(VRF_NODE, &vrf_exit_cmd); |
e26aedbe PG |
862 | if (vrf_is_backend_netns() && ns_have_netns()) { |
863 | /* Install NS commands. */ | |
3bc34908 | 864 | vrf_daemon_privs = daemon_privs; |
e26aedbe PG |
865 | install_element(VRF_NODE, &vrf_netns_cmd); |
866 | install_element(VRF_NODE, &no_vrf_netns_cmd); | |
867 | } | |
19dc275e | 868 | } |
ec31f30d | 869 | |
4fe52e76 | 870 | void vrf_set_default_name(const char *default_name, bool force) |
ec31f30d | 871 | { |
c200f5e1 | 872 | struct vrf *def_vrf; |
4fe52e76 | 873 | static bool def_vrf_forced; |
ec31f30d | 874 | |
c200f5e1 PG |
875 | def_vrf = vrf_lookup_by_id(VRF_DEFAULT); |
876 | assert(default_name); | |
4fe52e76 PG |
877 | if (def_vrf && !force && def_vrf_forced) { |
878 | zlog_debug("VRF: %s, avoid changing name to %s, previously forced (%u)", | |
879 | def_vrf->name, default_name, | |
880 | def_vrf->vrf_id); | |
881 | return; | |
882 | } | |
87272aff PG |
883 | if (strmatch(vrf_default_name, default_name)) |
884 | return; | |
c200f5e1 PG |
885 | snprintf(vrf_default_name, VRF_NAMSIZ, "%s", default_name); |
886 | if (def_vrf) { | |
4fe52e76 PG |
887 | if (force) |
888 | def_vrf_forced = true; | |
c200f5e1 PG |
889 | RB_REMOVE(vrf_name_head, &vrfs_by_name, def_vrf); |
890 | strlcpy(def_vrf->data.l.netns_name, | |
891 | vrf_default_name, NS_NAMSIZ); | |
892 | strlcpy(def_vrf->name, vrf_default_name, sizeof(def_vrf->name)); | |
893 | RB_INSERT(vrf_name_head, &vrfs_by_name, def_vrf); | |
ecbc5a37 PG |
894 | if (vrf_master.vrf_update_name_hook) |
895 | (*vrf_master.vrf_update_name_hook)(def_vrf); | |
c200f5e1 PG |
896 | } |
897 | } | |
898 | ||
899 | const char *vrf_get_default_name(void) | |
900 | { | |
901 | return vrf_default_name; | |
902 | } | |
903 | ||
904 | vrf_id_t vrf_get_default_id(void) | |
905 | { | |
03aff2d8 PG |
906 | /* backend netns is only known by zebra |
907 | * for other daemons, we return VRF_DEFAULT_INTERNAL | |
908 | */ | |
ec31f30d PG |
909 | if (vrf_is_backend_netns()) |
910 | return ns_get_default_id(); | |
911 | else | |
912 | return VRF_DEFAULT_INTERNAL; | |
913 | } | |
2e0d2b3d | 914 | |
02fe07c7 | 915 | int vrf_bind(vrf_id_t vrf_id, int fd, const char *name) |
0f4977c6 PG |
916 | { |
917 | int ret = 0; | |
91f854f6 | 918 | struct interface *ifp; |
0f4977c6 | 919 | |
a36898e7 | 920 | if (fd < 0 || name == NULL) |
0f4977c6 | 921 | return fd; |
91f854f6 PG |
922 | /* the device should exist |
923 | * otherwise we should return | |
924 | * case ifname = vrf in netns mode => return | |
925 | */ | |
a36898e7 | 926 | ifp = if_lookup_by_name(name, vrf_id); |
91f854f6 | 927 | if (!ifp) |
0f4977c6 PG |
928 | return fd; |
929 | #ifdef SO_BINDTODEVICE | |
c9c70dd1 | 930 | ret = setsockopt(fd, SOL_SOCKET, SO_BINDTODEVICE, name, strlen(name)+1); |
0f4977c6 | 931 | if (ret < 0) |
996c9314 LB |
932 | zlog_debug("bind to interface %s failed, errno=%d", name, |
933 | errno); | |
0f4977c6 PG |
934 | #endif /* SO_BINDTODEVICE */ |
935 | return ret; | |
936 | } | |
2e0d2b3d | 937 | int vrf_getaddrinfo(const char *node, const char *service, |
996c9314 LB |
938 | const struct addrinfo *hints, struct addrinfo **res, |
939 | vrf_id_t vrf_id) | |
2e0d2b3d PG |
940 | { |
941 | int ret, ret2, save_errno; | |
942 | ||
943 | ret = vrf_switch_to_netns(vrf_id); | |
944 | if (ret < 0) | |
450971aa | 945 | flog_err_sys(EC_LIB_SOCKET, "%s: Can't switch to VRF %u (%s)", |
09c866e3 | 946 | __func__, vrf_id, safe_strerror(errno)); |
2e0d2b3d PG |
947 | ret = getaddrinfo(node, service, hints, res); |
948 | save_errno = errno; | |
949 | ret2 = vrf_switchback_to_initial(); | |
950 | if (ret2 < 0) | |
450971aa | 951 | flog_err_sys(EC_LIB_SOCKET, |
09c866e3 QY |
952 | "%s: Can't switchback from VRF %u (%s)", __func__, |
953 | vrf_id, safe_strerror(errno)); | |
2e0d2b3d PG |
954 | errno = save_errno; |
955 | return ret; | |
956 | } | |
957 | ||
516d7591 PG |
958 | int vrf_ioctl(vrf_id_t vrf_id, int d, unsigned long request, char *params) |
959 | { | |
960 | int ret, saved_errno, rc; | |
961 | ||
962 | ret = vrf_switch_to_netns(vrf_id); | |
963 | if (ret < 0) { | |
450971aa | 964 | flog_err_sys(EC_LIB_SOCKET, "%s: Can't switch to VRF %u (%s)", |
09c866e3 | 965 | __func__, vrf_id, safe_strerror(errno)); |
516d7591 PG |
966 | return 0; |
967 | } | |
968 | rc = ioctl(d, request, params); | |
969 | saved_errno = errno; | |
970 | ret = vrf_switchback_to_initial(); | |
971 | if (ret < 0) | |
450971aa | 972 | flog_err_sys(EC_LIB_SOCKET, |
09c866e3 QY |
973 | "%s: Can't switchback from VRF %u (%s)", __func__, |
974 | vrf_id, safe_strerror(errno)); | |
516d7591 PG |
975 | errno = saved_errno; |
976 | return rc; | |
977 | } | |
978 | ||
0f4977c6 | 979 | int vrf_sockunion_socket(const union sockunion *su, vrf_id_t vrf_id, |
02fe07c7 | 980 | const char *interfacename) |
2e0d2b3d PG |
981 | { |
982 | int ret, save_errno, ret2; | |
983 | ||
984 | ret = vrf_switch_to_netns(vrf_id); | |
985 | if (ret < 0) | |
450971aa | 986 | flog_err_sys(EC_LIB_SOCKET, "%s: Can't switch to VRF %u (%s)", |
09c866e3 | 987 | __func__, vrf_id, safe_strerror(errno)); |
2e0d2b3d PG |
988 | ret = sockunion_socket(su); |
989 | save_errno = errno; | |
990 | ret2 = vrf_switchback_to_initial(); | |
991 | if (ret2 < 0) | |
450971aa | 992 | flog_err_sys(EC_LIB_SOCKET, |
09c866e3 QY |
993 | "%s: Can't switchback from VRF %u (%s)", __func__, |
994 | vrf_id, safe_strerror(errno)); | |
2e0d2b3d | 995 | errno = save_errno; |
0f4977c6 PG |
996 | |
997 | if (ret <= 0) | |
998 | return ret; | |
999 | ret2 = vrf_bind(vrf_id, ret, interfacename); | |
1000 | if (ret2 < 0) { | |
1001 | close(ret); | |
1002 | ret = ret2; | |
1003 | } | |
2e0d2b3d PG |
1004 | return ret; |
1005 | } | |
0b014ea6 PG |
1006 | |
1007 | vrf_id_t vrf_generate_id(void) | |
1008 | { | |
1009 | static int vrf_id_local; | |
1010 | ||
1011 | return ++vrf_id_local; | |
1012 | } |