3 * Copyright (C) 2014 6WIND S.A.
5 * This file is part of GNU Zebra.
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.
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.
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
37 #include "nexthop_group.h"
38 #include "lib_errors.h"
40 /* default VRF ID value used when VRF backend is not NETNS */
41 #define VRF_DEFAULT_INTERNAL 0
42 #define VRF_DEFAULT_NAME_INTERNAL "default"
44 DEFINE_MTYPE_STATIC(LIB
, VRF
, "VRF")
45 DEFINE_MTYPE_STATIC(LIB
, VRF_BITMAP
, "VRF bit-map")
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
*);
52 RB_GENERATE(vrf_id_head
, vrf
, id_entry
, vrf_id_compare
);
53 RB_GENERATE(vrf_name_head
, vrf
, name_entry
, vrf_name_compare
);
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
);
58 static int vrf_backend
;
59 static int vrf_backend_configured
;
60 static struct zebra_privs_t
*vrf_daemon_privs
;
61 static char vrf_default_name
[VRF_NAMSIZ
] = VRF_DEFAULT_NAME_INTERNAL
;
64 * Turn on/off debug code
67 static int debug_vrf
= 0;
69 /* Holding VRF hooks */
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
*);
75 int (*vrf_update_name_hook
)(struct vrf
*vrf
);
80 static int vrf_is_enabled(struct vrf
*vrf
);
82 /* VRF list existance check by name. */
83 struct vrf
*vrf_lookup_by_name(const char *name
)
86 strlcpy(vrf
.name
, name
, sizeof(vrf
.name
));
87 return (RB_FIND(vrf_name_head
, &vrfs_by_name
, &vrf
));
90 static __inline
int vrf_id_compare(const struct vrf
*a
, const struct vrf
*b
)
92 return (a
->vrf_id
- b
->vrf_id
);
95 static int vrf_name_compare(const struct vrf
*a
, const struct vrf
*b
)
97 return strcmp(a
->name
, b
->name
);
100 /* if ns_id is different and not VRF_UNKNOWN,
101 * then update vrf identifier, and enable VRF
103 static void vrf_update_vrf_id(ns_id_t ns_id
, void *opaqueptr
)
105 ns_id_t vrf_id
= (vrf_id_t
)ns_id
;
107 struct vrf
*vrf
= (struct vrf
*)opaqueptr
;
111 old_vrf_id
= vrf
->vrf_id
;
112 if (vrf_id
== vrf
->vrf_id
)
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
)
119 vrf_enable((struct vrf
*)vrf
);
122 int vrf_switch_to_netns(vrf_id_t vrf_id
)
125 struct vrf
*vrf
= vrf_lookup_by_id(vrf_id
);
127 /* VRF is default VRF. silently ignore */
128 if (!vrf
|| vrf
->vrf_id
== VRF_DEFAULT
)
129 return 1; /* 1 = default */
130 /* VRF has no NETNS backend. silently ignore */
131 if (vrf
->data
.l
.netns_name
[0] == '\0')
132 return 2; /* 2 = no netns */
133 name
= ns_netns_pathname(NULL
, vrf
->data
.l
.netns_name
);
135 zlog_debug("VRF_SWITCH: %s(%u)", name
, vrf
->vrf_id
);
136 return ns_switch_to_netns(name
);
139 int vrf_switchback_to_initial(void)
141 int ret
= ns_switchback_to_initial();
143 if (ret
== 0 && debug_vrf
)
144 zlog_debug("VRF_SWITCHBACK");
148 /* Get a VRF. If not found, create one.
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
152 * Description: Please note that this routine can be called with just the name
155 struct vrf
*vrf_get(vrf_id_t vrf_id
, const char *name
)
157 struct vrf
*vrf
= NULL
;
161 zlog_debug("VRF_GET: %s(%u)", name
== NULL
? "(NULL)" : name
,
164 /* Nothing to see, move along here */
165 if (!name
&& vrf_id
== VRF_UNKNOWN
)
168 /* attempt to find already available VRF
171 vrf
= vrf_lookup_by_name(name
);
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
);
179 /* Try to find VRF both by ID and name */
180 if (!vrf
&& vrf_id
!= VRF_UNKNOWN
)
181 vrf
= vrf_lookup_by_id(vrf_id
);
184 vrf
= XCALLOC(MTYPE_VRF
, sizeof(struct vrf
));
185 vrf
->vrf_id
= VRF_UNKNOWN
;
190 zlog_debug("VRF(%u) %s is created.", vrf_id
,
191 (name
) ? name
: "(NULL)");
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
);
201 if (name
&& vrf
->name
[0] != '\0' && strcmp(name
, vrf
->name
)) {
202 RB_REMOVE(vrf_name_head
, &vrfs_by_name
, vrf
);
203 strlcpy(vrf
->name
, name
, sizeof(vrf
->name
));
204 RB_INSERT(vrf_name_head
, &vrfs_by_name
, vrf
);
205 } else if (name
&& vrf
->name
[0] == '\0') {
206 strlcpy(vrf
->name
, name
, sizeof(vrf
->name
));
207 RB_INSERT(vrf_name_head
, &vrfs_by_name
, vrf
);
209 if (new &&vrf_master
.vrf_new_hook
)
210 (*vrf_master
.vrf_new_hook
)(vrf
);
215 /* Delete a VRF. This is called when the underlying VRF goes away, a
216 * pre-configured VRF is deleted or when shutting down (vrf_terminate()).
218 void vrf_delete(struct vrf
*vrf
)
221 zlog_debug("VRF %u is to be deleted.", vrf
->vrf_id
);
223 if (vrf_is_enabled(vrf
))
226 /* If the VRF is user configured, it'll stick around, just remove
227 * the ID mapping. Interfaces assigned to this VRF should've been
228 * removed already as part of the VRF going down.
230 if (vrf_is_user_cfged(vrf
)) {
231 if (vrf
->vrf_id
!= VRF_UNKNOWN
) {
232 /* Delete any VRF interfaces - should be only
233 * the VRF itself, other interfaces should've
234 * been moved out of the VRF.
237 RB_REMOVE(vrf_id_head
, &vrfs_by_id
, vrf
);
238 vrf
->vrf_id
= VRF_UNKNOWN
;
243 if (vrf_master
.vrf_delete_hook
)
244 (*vrf_master
.vrf_delete_hook
)(vrf
);
249 if (vrf
->vrf_id
!= VRF_UNKNOWN
)
250 RB_REMOVE(vrf_id_head
, &vrfs_by_id
, vrf
);
251 if (vrf
->name
[0] != '\0')
252 RB_REMOVE(vrf_name_head
, &vrfs_by_name
, vrf
);
254 XFREE(MTYPE_VRF
, vrf
);
257 /* Look up a VRF by identifier. */
258 struct vrf
*vrf_lookup_by_id(vrf_id_t vrf_id
)
262 return (RB_FIND(vrf_id_head
, &vrfs_by_id
, &vrf
));
266 * Enable a VRF - that is, let the VRF be ready to use.
267 * The VRF_ENABLE_HOOK callback will be called to inform
268 * that they can allocate resources in this VRF.
270 * RETURN: 1 - enabled successfully; otherwise, 0.
272 int vrf_enable(struct vrf
*vrf
)
274 if (vrf_is_enabled(vrf
))
278 zlog_debug("VRF %u is enabled.", vrf
->vrf_id
);
280 SET_FLAG(vrf
->status
, VRF_ACTIVE
);
282 if (vrf_master
.vrf_enable_hook
)
283 (*vrf_master
.vrf_enable_hook
)(vrf
);
286 * If we have any nexthop group entries that
287 * are awaiting vrf initialization then
288 * let's let people know about it
290 nexthop_group_enable_vrf(vrf
);
296 * Disable a VRF - that is, let the VRF be unusable.
297 * The VRF_DELETE_HOOK callback will be called to inform
298 * that they must release the resources in the VRF.
300 void vrf_disable(struct vrf
*vrf
)
302 if (!vrf_is_enabled(vrf
))
305 UNSET_FLAG(vrf
->status
, VRF_ACTIVE
);
308 zlog_debug("VRF %u is to be disabled.", vrf
->vrf_id
);
310 /* Till now, nothing to be done for the default VRF. */
311 // Pending: see why this statement.
313 if (vrf_master
.vrf_disable_hook
)
314 (*vrf_master
.vrf_disable_hook
)(vrf
);
317 const char *vrf_id_to_name(vrf_id_t vrf_id
)
321 vrf
= vrf_lookup_by_id(vrf_id
);
328 vrf_id_t
vrf_name_to_id(const char *name
)
331 vrf_id_t vrf_id
= VRF_DEFAULT
; // Pending: need a way to return invalid
332 // id/ routine not used.
336 vrf
= vrf_lookup_by_name(name
);
338 vrf_id
= vrf
->vrf_id
;
343 /* Get the data pointer of the specified VRF. If not found, create one. */
344 void *vrf_info_get(vrf_id_t vrf_id
)
346 struct vrf
*vrf
= vrf_get(vrf_id
, NULL
);
350 /* Look up the data pointer of the specified VRF. */
351 void *vrf_info_lookup(vrf_id_t vrf_id
)
353 struct vrf
*vrf
= vrf_lookup_by_id(vrf_id
);
354 return vrf
? vrf
->info
: NULL
;
358 * VRF hash for storing set or not.
365 static unsigned int vrf_hash_bitmap_key(const void *data
)
367 const struct vrf_bit_set
*bit
= data
;
372 static bool vrf_hash_bitmap_cmp(const void *a
, const void *b
)
374 const struct vrf_bit_set
*bit1
= a
;
375 const struct vrf_bit_set
*bit2
= b
;
377 return bit1
->vrf_id
== bit2
->vrf_id
;
380 static void *vrf_hash_bitmap_alloc(void *data
)
382 struct vrf_bit_set
*copy
= data
;
383 struct vrf_bit_set
*bit
;
385 bit
= XMALLOC(MTYPE_VRF_BITMAP
, sizeof(*bit
));
386 bit
->vrf_id
= copy
->vrf_id
;
391 static void vrf_hash_bitmap_free(void *data
)
393 struct vrf_bit_set
*bit
= data
;
395 XFREE(MTYPE_VRF_BITMAP
, bit
);
398 vrf_bitmap_t
vrf_bitmap_init(void)
400 return hash_create_size(32, vrf_hash_bitmap_key
, vrf_hash_bitmap_cmp
,
404 void vrf_bitmap_free(vrf_bitmap_t bmap
)
406 struct hash
*vrf_hash
= bmap
;
408 if (vrf_hash
== NULL
)
411 hash_clean(vrf_hash
, vrf_hash_bitmap_free
);
415 void vrf_bitmap_set(vrf_bitmap_t bmap
, vrf_id_t vrf_id
)
417 struct vrf_bit_set lookup
= { .vrf_id
= vrf_id
};
418 struct hash
*vrf_hash
= bmap
;
419 struct vrf_bit_set
*bit
;
421 if (vrf_hash
== NULL
|| vrf_id
== VRF_UNKNOWN
)
424 bit
= hash_get(vrf_hash
, &lookup
, vrf_hash_bitmap_alloc
);
428 void vrf_bitmap_unset(vrf_bitmap_t bmap
, vrf_id_t vrf_id
)
430 struct vrf_bit_set lookup
= { .vrf_id
= vrf_id
};
431 struct hash
*vrf_hash
= bmap
;
432 struct vrf_bit_set
*bit
;
434 if (vrf_hash
== NULL
|| vrf_id
== VRF_UNKNOWN
)
437 bit
= hash_get(vrf_hash
, &lookup
, vrf_hash_bitmap_alloc
);
441 int vrf_bitmap_check(vrf_bitmap_t bmap
, vrf_id_t vrf_id
)
443 struct vrf_bit_set lookup
= { .vrf_id
= vrf_id
};
444 struct hash
*vrf_hash
= bmap
;
445 struct vrf_bit_set
*bit
;
447 if (vrf_hash
== NULL
|| vrf_id
== VRF_UNKNOWN
)
450 bit
= hash_lookup(vrf_hash
, &lookup
);
457 static void vrf_autocomplete(vector comps
, struct cmd_token
*token
)
459 struct vrf
*vrf
= NULL
;
461 RB_FOREACH (vrf
, vrf_name_head
, &vrfs_by_name
)
462 vector_set(comps
, XSTRDUP(MTYPE_COMPLETION
, vrf
->name
));
465 static const struct cmd_variable_handler vrf_var_handlers
[] = {
468 .completions
= vrf_autocomplete
,
470 {.completions
= NULL
},
473 /* Initialize VRF module. */
474 void vrf_init(int (*create
)(struct vrf
*), int (*enable
)(struct vrf
*),
475 int (*disable
)(struct vrf
*), int (*destroy
)(struct vrf
*),
476 int ((*update
)(struct vrf
*)))
478 struct vrf
*default_vrf
;
480 /* initialise NS, in case VRF backend if NETNS */
483 zlog_debug("%s: Initializing VRF subsystem",
484 __PRETTY_FUNCTION__
);
486 vrf_master
.vrf_new_hook
= create
;
487 vrf_master
.vrf_enable_hook
= enable
;
488 vrf_master
.vrf_disable_hook
= disable
;
489 vrf_master
.vrf_delete_hook
= destroy
;
490 vrf_master
.vrf_update_name_hook
= update
;
492 /* The default VRF always exists. */
493 default_vrf
= vrf_get(VRF_DEFAULT
, VRF_DEFAULT_NAME
);
495 flog_err(EC_LIB_VRF_START
,
496 "vrf_init: failed to create the default VRF!");
499 if (vrf_is_backend_netns()) {
502 strlcpy(default_vrf
->data
.l
.netns_name
,
503 VRF_DEFAULT_NAME
, NS_NAMSIZ
);
504 ns
= ns_lookup(ns_get_default_id());
505 ns
->vrf_ctxt
= default_vrf
;
506 default_vrf
->ns_ctxt
= ns
;
509 /* Enable the default VRF. */
510 if (!vrf_enable(default_vrf
)) {
511 flog_err(EC_LIB_VRF_START
,
512 "vrf_init: failed to enable the default VRF!");
516 cmd_variable_handler_register(vrf_var_handlers
);
519 /* Terminate VRF module. */
520 void vrf_terminate(void)
525 zlog_debug("%s: Shutting down vrf subsystem",
526 __PRETTY_FUNCTION__
);
528 while (!RB_EMPTY(vrf_id_head
, &vrfs_by_id
)) {
529 vrf
= RB_ROOT(vrf_id_head
, &vrfs_by_id
);
531 /* Clear configured flag and invoke delete. */
532 UNSET_FLAG(vrf
->status
, VRF_CONFIGURED
);
536 while (!RB_EMPTY(vrf_name_head
, &vrfs_by_name
)) {
537 vrf
= RB_ROOT(vrf_name_head
, &vrfs_by_name
);
539 /* Clear configured flag and invoke delete. */
540 UNSET_FLAG(vrf
->status
, VRF_CONFIGURED
);
545 /* Create a socket for the VRF. */
546 int vrf_socket(int domain
, int type
, int protocol
, vrf_id_t vrf_id
,
547 const char *interfacename
)
549 int ret
, save_errno
, ret2
;
551 ret
= vrf_switch_to_netns(vrf_id
);
553 flog_err_sys(EC_LIB_SOCKET
, "%s: Can't switch to VRF %u (%s)",
554 __func__
, vrf_id
, safe_strerror(errno
));
556 ret
= socket(domain
, type
, protocol
);
558 ret2
= vrf_switchback_to_initial();
560 flog_err_sys(EC_LIB_SOCKET
,
561 "%s: Can't switchback from VRF %u (%s)", __func__
,
562 vrf_id
, safe_strerror(errno
));
566 ret2
= vrf_bind(vrf_id
, ret
, interfacename
);
574 int vrf_is_backend_netns(void)
576 return (vrf_backend
== VRF_BACKEND_NETNS
);
579 int vrf_get_backend(void)
581 if (!vrf_backend_configured
)
582 return VRF_BACKEND_UNKNOWN
;
586 void vrf_configure_backend(int vrf_backend_netns
)
588 vrf_backend
= vrf_backend_netns
;
589 vrf_backend_configured
= 1;
592 int vrf_handler_create(struct vty
*vty
, const char *vrfname
,
597 if (strlen(vrfname
) > VRF_NAMSIZ
) {
600 "%% VRF name %s invalid: length exceeds %d bytes\n",
601 vrfname
, VRF_NAMSIZ
);
605 "%% VRF name %s invalid: length exceeds %d bytes\n",
606 vrfname
, VRF_NAMSIZ
);
607 return CMD_WARNING_CONFIG_FAILED
;
610 vrfp
= vrf_get(VRF_UNKNOWN
, vrfname
);
613 VTY_PUSH_CONTEXT(VRF_NODE
, vrfp
);
620 int vrf_netns_handler_create(struct vty
*vty
, struct vrf
*vrf
, char *pathname
,
621 ns_id_t ns_id
, ns_id_t internal_ns_id
)
623 struct ns
*ns
= NULL
;
626 return CMD_WARNING_CONFIG_FAILED
;
627 if (vrf
->vrf_id
!= VRF_UNKNOWN
&& vrf
->ns_ctxt
== NULL
) {
630 "VRF %u is already configured with VRF %s\n",
631 vrf
->vrf_id
, vrf
->name
);
633 zlog_info("VRF %u is already configured with VRF %s",
634 vrf
->vrf_id
, vrf
->name
);
635 return CMD_WARNING_CONFIG_FAILED
;
637 if (vrf
->ns_ctxt
!= NULL
) {
638 ns
= (struct ns
*)vrf
->ns_ctxt
;
639 if (!strcmp(ns
->name
, pathname
)) {
642 "VRF %u already configured with NETNS %s\n",
643 vrf
->vrf_id
, ns
->name
);
646 "VRF %u already configured with NETNS %s",
647 vrf
->vrf_id
, ns
->name
);
648 return CMD_WARNING_CONFIG_FAILED
;
651 ns
= ns_lookup_name(pathname
);
652 if (ns
&& ns
->vrf_ctxt
) {
653 struct vrf
*vrf2
= (struct vrf
*)ns
->vrf_ctxt
;
659 "NS %s is already configured"
660 " with VRF %u(%s)\n",
661 ns
->name
, vrf2
->vrf_id
, vrf2
->name
);
663 zlog_info("NS %s is already configured with VRF %u(%s)",
664 ns
->name
, vrf2
->vrf_id
, vrf2
->name
);
665 return CMD_WARNING_CONFIG_FAILED
;
667 ns
= ns_get_created(ns
, pathname
, ns_id
);
668 ns
->internal_ns_id
= internal_ns_id
;
669 ns
->vrf_ctxt
= (void *)vrf
;
670 vrf
->ns_ctxt
= (void *)ns
;
671 /* update VRF netns NAME */
672 strlcpy(vrf
->data
.l
.netns_name
, basename(pathname
), NS_NAMSIZ
);
674 if (!ns_enable(ns
, vrf_update_vrf_id
)) {
676 vty_out(vty
, "Can not associate NS %u with NETNS %s\n",
677 ns
->ns_id
, ns
->name
);
679 zlog_info("Can not associate NS %u with NETNS %s",
680 ns
->ns_id
, ns
->name
);
681 return CMD_WARNING_CONFIG_FAILED
;
687 /* vrf CLI commands */
691 "Exit current mode and down to previous mode\n")
693 /* We have to set vrf context to default vrf */
694 VTY_PUSH_CONTEXT(VRF_NODE
, vrf_get(VRF_DEFAULT
, VRF_DEFAULT_NAME
));
695 vty
->node
= CONFIG_NODE
;
702 "Select a VRF to configure\n"
706 const char *vrfname
= argv
[idx_name
]->arg
;
708 return vrf_handler_create(vty
, vrfname
, NULL
);
715 "Delete a pseudo VRF's configuration\n"
718 const char *vrfname
= argv
[2]->arg
;
722 vrfp
= vrf_lookup_by_name(vrfname
);
725 vty_out(vty
, "%% VRF %s does not exist\n", vrfname
);
726 return CMD_WARNING_CONFIG_FAILED
;
729 if (CHECK_FLAG(vrfp
->status
, VRF_ACTIVE
)) {
730 vty_out(vty
, "%% Only inactive VRFs can be deleted\n");
731 return CMD_WARNING_CONFIG_FAILED
;
734 /* Clear configured flag and invoke delete. */
735 UNSET_FLAG(vrfp
->status
, VRF_CONFIGURED
);
742 struct cmd_node vrf_node
= {VRF_NODE
, "%s(config-vrf)# ", 1};
744 DEFUN_NOSH (vrf_netns
,
747 "Attach VRF to a Namespace\n"
748 "The file name in " NS_RUN_DIR
", or a full pathname\n")
750 int idx_name
= 1, ret
;
751 char *pathname
= ns_netns_pathname(vty
, argv
[idx_name
]->arg
);
753 VTY_DECLVAR_CONTEXT(vrf
, vrf
);
756 return CMD_WARNING_CONFIG_FAILED
;
758 frr_with_privs(vrf_daemon_privs
) {
759 ret
= vrf_netns_handler_create(vty
, vrf
, pathname
,
760 NS_UNKNOWN
, NS_UNKNOWN
);
765 DEFUN_NOSH (no_vrf_netns
,
769 "Detach VRF from a Namespace\n"
770 "The file name in " NS_RUN_DIR
", or a full pathname\n")
772 struct ns
*ns
= NULL
;
774 VTY_DECLVAR_CONTEXT(vrf
, vrf
);
776 if (!vrf_is_backend_netns()) {
777 vty_out(vty
, "VRF backend is not Netns. Aborting\n");
778 return CMD_WARNING_CONFIG_FAILED
;
781 vty_out(vty
, "VRF %s(%u) is not configured with NetNS\n",
782 vrf
->name
, vrf
->vrf_id
);
783 return CMD_WARNING_CONFIG_FAILED
;
786 ns
= (struct ns
*)vrf
->ns_ctxt
;
790 /* vrf ID from VRF is necessary for Zebra
791 * so that propagate to other clients is done
799 * Debug CLI for vrf's
824 static int vrf_write_host(struct vty
*vty
)
827 vty_out(vty
, "debug vrf\n");
832 static struct cmd_node vrf_debug_node
= {VRF_DEBUG_NODE
, "", 1};
834 void vrf_install_commands(void)
836 install_node(&vrf_debug_node
, vrf_write_host
);
838 install_element(CONFIG_NODE
, &vrf_debug_cmd
);
839 install_element(ENABLE_NODE
, &vrf_debug_cmd
);
840 install_element(CONFIG_NODE
, &no_vrf_debug_cmd
);
841 install_element(ENABLE_NODE
, &no_vrf_debug_cmd
);
844 void vrf_cmd_init(int (*writefunc
)(struct vty
*vty
),
845 struct zebra_privs_t
*daemon_privs
)
847 install_element(CONFIG_NODE
, &vrf_cmd
);
848 install_element(CONFIG_NODE
, &no_vrf_cmd
);
849 install_node(&vrf_node
, writefunc
);
850 install_default(VRF_NODE
);
851 install_element(VRF_NODE
, &vrf_exit_cmd
);
852 if (vrf_is_backend_netns() && ns_have_netns()) {
853 /* Install NS commands. */
854 vrf_daemon_privs
= daemon_privs
;
855 install_element(VRF_NODE
, &vrf_netns_cmd
);
856 install_element(VRF_NODE
, &no_vrf_netns_cmd
);
860 void vrf_set_default_name(const char *default_name
, bool force
)
863 static bool def_vrf_forced
;
865 def_vrf
= vrf_lookup_by_id(VRF_DEFAULT
);
866 assert(default_name
);
867 if (def_vrf
&& !force
&& def_vrf_forced
) {
868 zlog_debug("VRF: %s, avoid changing name to %s, previously forced (%u)",
869 def_vrf
->name
, default_name
,
874 snprintf(vrf_default_name
, VRF_NAMSIZ
, "%s", default_name
);
877 def_vrf_forced
= true;
878 RB_REMOVE(vrf_name_head
, &vrfs_by_name
, def_vrf
);
879 strlcpy(def_vrf
->data
.l
.netns_name
,
880 vrf_default_name
, NS_NAMSIZ
);
881 strlcpy(def_vrf
->name
, vrf_default_name
, sizeof(def_vrf
->name
));
882 RB_INSERT(vrf_name_head
, &vrfs_by_name
, def_vrf
);
883 if (vrf_master
.vrf_update_name_hook
)
884 (*vrf_master
.vrf_update_name_hook
)(def_vrf
);
888 const char *vrf_get_default_name(void)
890 return vrf_default_name
;
893 vrf_id_t
vrf_get_default_id(void)
895 /* backend netns is only known by zebra
896 * for other daemons, we return VRF_DEFAULT_INTERNAL
898 if (vrf_is_backend_netns())
899 return ns_get_default_id();
901 return VRF_DEFAULT_INTERNAL
;
904 int vrf_bind(vrf_id_t vrf_id
, int fd
, const char *name
)
907 struct interface
*ifp
;
909 if (fd
< 0 || name
== NULL
)
911 /* the device should exist
912 * otherwise we should return
913 * case ifname = vrf in netns mode => return
915 ifp
= if_lookup_by_name(name
, vrf_id
);
918 #ifdef SO_BINDTODEVICE
919 ret
= setsockopt(fd
, SOL_SOCKET
, SO_BINDTODEVICE
, name
, strlen(name
)+1);
921 zlog_debug("bind to interface %s failed, errno=%d", name
,
923 #endif /* SO_BINDTODEVICE */
926 int vrf_getaddrinfo(const char *node
, const char *service
,
927 const struct addrinfo
*hints
, struct addrinfo
**res
,
930 int ret
, ret2
, save_errno
;
932 ret
= vrf_switch_to_netns(vrf_id
);
934 flog_err_sys(EC_LIB_SOCKET
, "%s: Can't switch to VRF %u (%s)",
935 __func__
, vrf_id
, safe_strerror(errno
));
936 ret
= getaddrinfo(node
, service
, hints
, res
);
938 ret2
= vrf_switchback_to_initial();
940 flog_err_sys(EC_LIB_SOCKET
,
941 "%s: Can't switchback from VRF %u (%s)", __func__
,
942 vrf_id
, safe_strerror(errno
));
947 int vrf_ioctl(vrf_id_t vrf_id
, int d
, unsigned long request
, char *params
)
949 int ret
, saved_errno
, rc
;
951 ret
= vrf_switch_to_netns(vrf_id
);
953 flog_err_sys(EC_LIB_SOCKET
, "%s: Can't switch to VRF %u (%s)",
954 __func__
, vrf_id
, safe_strerror(errno
));
957 rc
= ioctl(d
, request
, params
);
959 ret
= vrf_switchback_to_initial();
961 flog_err_sys(EC_LIB_SOCKET
,
962 "%s: Can't switchback from VRF %u (%s)", __func__
,
963 vrf_id
, safe_strerror(errno
));
968 int vrf_sockunion_socket(const union sockunion
*su
, vrf_id_t vrf_id
,
969 const char *interfacename
)
971 int ret
, save_errno
, ret2
;
973 ret
= vrf_switch_to_netns(vrf_id
);
975 flog_err_sys(EC_LIB_SOCKET
, "%s: Can't switch to VRF %u (%s)",
976 __func__
, vrf_id
, safe_strerror(errno
));
977 ret
= sockunion_socket(su
);
979 ret2
= vrf_switchback_to_initial();
981 flog_err_sys(EC_LIB_SOCKET
,
982 "%s: Can't switchback from VRF %u (%s)", __func__
,
983 vrf_id
, safe_strerror(errno
));
988 ret2
= vrf_bind(vrf_id
, ret
, interfacename
);
996 vrf_id_t
vrf_generate_id(void)
998 static int vrf_id_local
;
1000 return ++vrf_id_local
;