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
25 #include "openbsd-tree.h"
31 /* The default VRF ID */
32 #define VRF_UNKNOWN UINT32_MAX
34 /* Pending: May need to refine this. */
36 enum { IFLA_VRF_UNSPEC
, IFLA_VRF_TABLE
, __IFLA_VRF_MAX
};
38 #define IFLA_VRF_MAX (__IFLA_VRF_MAX - 1)
44 #define VRF_DEFAULT_NAME "Default-IP-Routing-Table"
49 #define VRF_CMD_HELP_STR "Specify the VRF\nThe VRF name\n"
50 #define VRF_ALL_CMD_HELP_STR "Specify the VRF\nAll VRFs\n"
51 #define VRF_FULL_CMD_HELP_STR "Specify the VRF\nThe VRF name\nAll VRFs\n"
54 * Pass some OS specific data up through
61 char netns_name
[NS_NAMSIZ
];
67 RB_ENTRY(vrf
) id_entry
, name_entry
;
69 /* Identifier, same as the vector index */
73 char name
[VRF_NAMSIZ
+ 1];
75 /* Zebra internal VRF status */
77 #define VRF_ACTIVE (1 << 0) /* VRF is up in kernel */
78 #define VRF_CONFIGURED (1 << 1) /* VRF has some FRR configuration */
80 /* Interfaces belonging to this VRF */
81 struct if_name_head ifaces_by_name
;
82 struct if_index_head ifaces_by_index
;
87 /* The table_id from the kernel */
90 /* Back pointer to namespace context */
95 RB_HEAD(vrf_id_head
, vrf
);
96 RB_PROTOTYPE(vrf_id_head
, vrf
, id_entry
, vrf_id_compare
)
97 RB_HEAD(vrf_name_head
, vrf
);
98 RB_PROTOTYPE(vrf_name_head
, vrf
, name_entry
, vrf_name_compare
)
99 DECLARE_QOBJ_TYPE(vrf
)
101 /* Allow VRF with netns as backend */
102 #define VRF_BACKEND_VRF_LITE 0
103 #define VRF_BACKEND_NETNS 1
105 extern struct vrf_id_head vrfs_by_id
;
106 extern struct vrf_name_head vrfs_by_name
;
108 extern struct vrf
*vrf_lookup_by_id(vrf_id_t
);
109 extern struct vrf
*vrf_lookup_by_name(const char *);
110 extern struct vrf
*vrf_get(vrf_id_t
, const char *);
111 extern const char *vrf_id_to_name(vrf_id_t vrf_id
);
112 extern vrf_id_t
vrf_name_to_id(const char *);
114 #define VRF_GET_ID(V, NAME) \
117 if (!(vrf = vrf_lookup_by_name(NAME))) { \
118 vty_out(vty, "%% VRF %s not found\n", NAME); \
119 return CMD_WARNING; \
121 if (vrf->vrf_id == VRF_UNKNOWN) { \
122 vty_out(vty, "%% VRF %s not active\n", NAME); \
123 return CMD_WARNING; \
129 * Check whether the VRF is enabled.
131 static inline int vrf_is_enabled(struct vrf
*vrf
)
133 return vrf
&& CHECK_FLAG(vrf
->status
, VRF_ACTIVE
);
136 /* check if the vrf is user configured */
137 static inline int vrf_is_user_cfged(struct vrf
*vrf
)
139 return vrf
&& CHECK_FLAG(vrf
->status
, VRF_CONFIGURED
);
142 /* Mark that VRF has user configuration */
143 static inline void vrf_set_user_cfged(struct vrf
*vrf
)
145 SET_FLAG(vrf
->status
, VRF_CONFIGURED
);
148 /* Mark that VRF no longer has any user configuration */
149 static inline void vrf_reset_user_cfged(struct vrf
*vrf
)
151 UNSET_FLAG(vrf
->status
, VRF_CONFIGURED
);
155 * Utilities to obtain the user data
158 /* Get the data pointer of the specified VRF. If not found, create one. */
159 extern void *vrf_info_get(vrf_id_t
);
160 /* Look up the data pointer of the specified VRF. */
161 extern void *vrf_info_lookup(vrf_id_t
);
164 * VRF bit-map: maintaining flags, one bit per VRF ID
167 typedef void *vrf_bitmap_t
;
168 #define VRF_BITMAP_NULL NULL
170 extern vrf_bitmap_t
vrf_bitmap_init(void);
171 extern void vrf_bitmap_free(vrf_bitmap_t
);
172 extern void vrf_bitmap_set(vrf_bitmap_t
, vrf_id_t
);
173 extern void vrf_bitmap_unset(vrf_bitmap_t
, vrf_id_t
);
174 extern int vrf_bitmap_check(vrf_bitmap_t
, vrf_id_t
);
177 * VRF initializer/destructor
179 * create -> Called back when a new VRF is created. This
180 * can be either through these 3 options:
181 * 1) CLI mentions a vrf before OS knows about it
182 * 2) OS calls zebra and we create the vrf from OS
184 * 3) zebra calls individual protocols to notify
187 * enable -> Called back when a VRF is actually usable from
188 * an OS perspective ( 2 and 3 above )
190 * disable -> Called back when a VRF is being deleted from
191 * the system ( 2 and 3 ) above
193 * delete -> Called back when a vrf is being deleted from
194 * the system ( 2 and 3 ) above.
196 extern void vrf_init(int (*create
)(struct vrf
*), int (*enable
)(struct vrf
*),
197 int (*disable
)(struct vrf
*), int (*delete)(struct vrf
*));
199 * Call vrf_terminate when the protocol is being shutdown
201 extern void vrf_terminate(void);
204 * Utilities to create networks objects,
205 * or call network operations
208 /* Create a socket serving for the given VRF */
209 extern int vrf_socket(int domain
, int type
, int protocol
, vrf_id_t vrf_id
,
212 extern int vrf_sockunion_socket(const union sockunion
*su
, vrf_id_t vrf_id
,
215 extern int vrf_bind(vrf_id_t vrf_id
, int fd
, char *name
);
217 /* VRF ioctl operations */
218 extern int vrf_getaddrinfo(const char *node
, const char *service
,
219 const struct addrinfo
*hints
, struct addrinfo
**res
,
222 extern int vrf_ioctl(vrf_id_t vrf_id
, int d
, unsigned long request
, char *args
);
224 /* function called by macro VRF_DEFAULT
225 * to get the default VRF_ID
227 extern vrf_id_t
vrf_get_default_id(void);
228 /* The default VRF ID */
229 #define VRF_DEFAULT vrf_get_default_id()
231 /* VRF is mapped on netns or not ? */
232 int vrf_is_mapped_on_netns(vrf_id_t vrf_id
);
234 /* VRF switch from NETNS */
235 extern int vrf_switch_to_netns(vrf_id_t vrf_id
);
236 extern int vrf_switchback_to_initial(void);
239 * VRF backend routines
240 * should be called from zebra only
243 /* VRF vty command initialisation
245 extern void vrf_cmd_init(int (*writefunc
)(struct vty
*vty
),
246 struct zebra_privs_t
*daemon_priv
);
250 extern void vrf_install_commands(void);
256 /* API for configuring VRF backend
257 * should be called from zebra only
259 extern void vrf_configure_backend(int vrf_backend_netns
);
260 extern int vrf_get_backend(void);
261 extern int vrf_is_backend_netns(void);
264 /* API to create a VRF. either from vty
265 * or through discovery
267 extern int vrf_handler_create(struct vty
*vty
, const char *name
,
270 /* API to associate a VRF with a NETNS.
271 * called either from vty or through discovery
272 * should be called from zebra only
274 extern int vrf_netns_handler_create(struct vty
*vty
, struct vrf
*vrf
,
275 char *pathname
, ns_id_t ns_id
);
277 /* used internally to enable or disable VRF.
278 * Notify a change in the VRF ID of the VRF
280 extern void vrf_disable(struct vrf
*vrf
);
281 extern int vrf_enable(struct vrf
*vrf
);
283 #endif /*_ZEBRA_VRF_H*/