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/*
* VRF related header.
* Copyright (C) 2014 6WIND S.A.
*
* This file is part of GNU Zebra.
*
* GNU Zebra is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published
* by the Free Software Foundation; either version 2, or (at your
* option) any later version.
*
* GNU Zebra is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; see the file COPYING; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef _ZEBRA_VRF_H
#define _ZEBRA_VRF_H
#include "openbsd-tree.h"
#include "linklist.h"
#include "qobj.h"
#include "vty.h"
/* The default NS ID */
#define NS_DEFAULT 0
/* The default VRF ID */
#define VRF_DEFAULT 0
#define VRF_UNKNOWN UINT16_MAX
#define VRF_ALL UINT16_MAX - 1
/* Pending: May need to refine this. */
#ifndef IFLA_VRF_MAX
enum { IFLA_VRF_UNSPEC, IFLA_VRF_TABLE, __IFLA_VRF_MAX };
#define IFLA_VRF_MAX (__IFLA_VRF_MAX - 1)
#endif
#define VRF_NAMSIZ 36
#define VRF_DEFAULT_NAME "Default-IP-Routing-Table"
/*
* The command strings
*/
#define VRF_CMD_HELP_STR "Specify the VRF\nThe VRF name\n"
#define VRF_ALL_CMD_HELP_STR "Specify the VRF\nAll VRFs\n"
/*
* Pass some OS specific data up through
* to the daemons
*/
struct vrf_data {
union {
struct {
uint32_t table_id;
} l;
};
};
struct vrf {
RB_ENTRY(vrf) id_entry, name_entry;
/* Identifier, same as the vector index */
vrf_id_t vrf_id;
/* Name */
char name[VRF_NAMSIZ + 1];
/* Zebra internal VRF status */
u_char status;
#define VRF_ACTIVE (1 << 0)
/* Master list of interfaces belonging to this VRF */
struct list *iflist;
/* User data */
void *info;
/* The table_id from the kernel */
struct vrf_data data;
QOBJ_FIELDS
};
RB_HEAD(vrf_id_head, vrf);
RB_PROTOTYPE(vrf_id_head, vrf, id_entry, vrf_id_compare)
RB_HEAD(vrf_name_head, vrf);
RB_PROTOTYPE(vrf_name_head, vrf, name_entry, vrf_name_compare)
DECLARE_QOBJ_TYPE(vrf)
extern struct vrf_id_head vrfs_by_id;
extern struct vrf_name_head vrfs_by_name;
extern struct vrf *vrf_lookup_by_id(vrf_id_t);
extern struct vrf *vrf_lookup_by_name(const char *);
extern struct vrf *vrf_get(vrf_id_t, const char *);
extern vrf_id_t vrf_name_to_id(const char *);
#define VRF_GET_ID(V, NAME) \
do { \
struct vrf *vrf; \
if (!(vrf = vrf_lookup_by_name(NAME))) { \
vty_out(vty, "%% VRF %s not found\n", NAME); \
return CMD_WARNING; \
} \
if (vrf->vrf_id == VRF_UNKNOWN) { \
vty_out(vty, "%% VRF %s not active\n", NAME); \
return CMD_WARNING; \
} \
(V) = vrf->vrf_id; \
} while (0)
/*
* Utilities to obtain the user data
*/
/* Get the data pointer of the specified VRF. If not found, create one. */
extern void *vrf_info_get(vrf_id_t);
/* Look up the data pointer of the specified VRF. */
extern void *vrf_info_lookup(vrf_id_t);
/*
* Utilities to obtain the interface list
*/
/* Look up the interface list of the specified VRF. */
extern struct list *vrf_iflist(vrf_id_t);
/* Get the interface list of the specified VRF. Create one if not find. */
extern struct list *vrf_iflist_get(vrf_id_t);
/*
* VRF bit-map: maintaining flags, one bit per VRF ID
*/
typedef void *vrf_bitmap_t;
#define VRF_BITMAP_NULL NULL
extern vrf_bitmap_t vrf_bitmap_init(void);
extern void vrf_bitmap_free(vrf_bitmap_t);
extern void vrf_bitmap_set(vrf_bitmap_t, vrf_id_t);
extern void vrf_bitmap_unset(vrf_bitmap_t, vrf_id_t);
extern int vrf_bitmap_check(vrf_bitmap_t, vrf_id_t);
/*
* VRF initializer/destructor
*
* create -> Called back when a new VRF is created. This
* can be either through these 3 options:
* 1) CLI mentions a vrf before OS knows about it
* 2) OS calls zebra and we create the vrf from OS
* callback
* 3) zebra calls individual protocols to notify
* about the new vrf
*
* enable -> Called back when a VRF is actually usable from
* an OS perspective ( 2 and 3 above )
*
* disable -> Called back when a VRF is being deleted from
* the system ( 2 and 3 ) above
*
* delete -> Called back when a vrf is being deleted from
* the system ( 2 and 3 ) above.
*/
extern void vrf_init(int (*create)(struct vrf *), int (*enable)(struct vrf *),
int (*disable)(struct vrf *), int (*delete)(struct vrf *));
/*
* Call vrf_terminate when the protocol is being shutdown
*/
extern void vrf_terminate(void);
extern void vrf_cmd_init(int (*writefunc)(struct vty *vty));
/*
* VRF utilities
*/
/* Create a socket serving for the given VRF */
extern int vrf_socket(int, int, int, vrf_id_t);
/*
* VRF Debugging
*/
extern void vrf_install_commands(void);
#endif /*_ZEBRA_VRF_H*/
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