[mirror_frr.git] / zebra / zebra_vrf.c

/*
 * Copyright (C) 2016 CumulusNetworks
 *                    Donald Sharp
 *
 * This file is part of Quagga
 *
 * Quagga 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.
 *
 * Quagga 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 GNU Zebra; see the file COPYING.  If not, write to the Free
 * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
 * 02111-1307, USA.
 */
#include <zebra.h>

#include "log.h"
#include "linklist.h"
#include "memory.h"

#include "zebra/debug.h"
#include "zebra/zserv.h"
#include "zebra/rib.h"
#include "zebra/zebra_vrf.h"
#include "zebra/router-id.h"
#include "zebra/zebra_memory.h"
#include "zebra/zebra_static.h"

extern struct zebra_t zebrad;
struct list *zvrf_list;

/* VRF information update. */
static void
zebra_vrf_add_update (struct zebra_vrf *zvrf)
{
  struct listnode *node, *nnode;
  struct zserv *client;

  if (IS_ZEBRA_DEBUG_EVENT)
    zlog_debug ("MESSAGE: ZEBRA_VRF_ADD %s", zvrf->name);

  for (ALL_LIST_ELEMENTS (zebrad.client_list, node, nnode, client))
    zsend_vrf_add (client, zvrf);
}

static void
zebra_vrf_delete_update (struct zebra_vrf *zvrf)
{
  struct listnode *node, *nnode;
  struct zserv *client;

  if (IS_ZEBRA_DEBUG_EVENT)
    zlog_debug ("MESSAGE: ZEBRA_VRF_DELETE %s", zvrf->name);

  for (ALL_LIST_ELEMENTS (zebrad.client_list, node, nnode, client))
    zsend_vrf_delete (client, zvrf);
}

void
zebra_vrf_update_all (struct zserv *client)
{
  struct vrf *vrf;
  vrf_iter_t iter;

  for (iter = vrf_first (); iter != VRF_ITER_INVALID; iter = vrf_next (iter))
    {
      if ((vrf = vrf_iter2vrf (iter)) && vrf->vrf_id)
        zsend_vrf_add (client, vrf_info_lookup (vrf->vrf_id));
    }
}

/* Callback upon creating a new VRF. */
static int
zebra_vrf_new (vrf_id_t vrf_id, const char *name, void **info)
{
  struct zebra_vrf *zvrf = *info;

  if (IS_ZEBRA_DEBUG_EVENT)
    zlog_info ("ZVRF %s with id %u", name, vrf_id);

  if (! zvrf)
    {
      zvrf = zebra_vrf_list_lookup_by_name (name);
      if (!zvrf)
	{
	  zvrf = zebra_vrf_alloc (vrf_id, name);
	  zvrf->zns = zebra_ns_lookup (NS_DEFAULT); /* Point to the global (single) NS */
	  *info = (void *)zvrf;
	  router_id_init (zvrf);
	  listnode_add_sort (zvrf_list, zvrf);
	}
      else
        {
          *info = (void *)zvrf;
	  router_id_init (zvrf);
        }
    }

  if (zvrf->vrf_id == VRF_UNKNOWN)
    zvrf->vrf_id = vrf_id;

  return 0;
}

/*
 * Moving an interface amongst different vrf's
 * causes the interface to get a new ifindex
 * so we need to find static routes with
 * the old ifindex and replace with new
 * ifindex to insert back into the table
 */
void
zebra_vrf_static_route_interface_fixup (struct interface *ifp)
{
  afi_t afi;
  safi_t safi;
  struct zebra_vrf *zvrf = zebra_vrf_lookup (ifp->vrf_id);
  struct route_table *stable = NULL;
  struct route_node *rn = NULL;
  struct static_route *si = NULL;

  if (!zvrf)
    return;

  for (afi = AFI_IP; afi < AFI_MAX; afi++)
    {
      for (safi = SAFI_UNICAST ; safi < SAFI_MAX ; safi++)
        {
          stable = zvrf->stable[afi][safi];
          if (stable)
	    for (rn = route_top (stable); rn; rn = route_next (rn))
	      {
		if (rn->info)
		  {
		    si = rn->info;
		    if ((strcmp (si->ifname, ifp->name) == 0) &&
			(si->ifindex != ifp->ifindex))
		      {
			si->ifindex = ifp->ifindex;
			static_install_route (afi, safi, &rn->p, si);
		      }	  
		  }
	      }
	}
    }
  
}

/* Callback upon enabling a VRF. */
static int
zebra_vrf_enable (vrf_id_t vrf_id, const char *name, void **info)
{
  struct zebra_vrf *zvrf = (struct zebra_vrf *) (*info);
  struct route_table *stable = NULL;
  struct route_node *rn = NULL;
  struct static_route *si = NULL;
  struct interface *ifp = NULL;
  afi_t afi;
  safi_t safi;

  assert (zvrf);

  zebra_vrf_add_update (zvrf);

  for (afi = AFI_IP; afi < AFI_MAX; afi++)
    {
      for (safi = SAFI_UNICAST ; safi < SAFI_MAX ; safi++)
	{
	  stable = zvrf->stable[afi][safi];
	  if (stable)
	    {
	      for (rn = route_top (stable); rn; rn = route_next (rn))
		{
		  if (rn->info)
		    {
		      si = rn->info;
		      si->vrf_id = vrf_id;
		      if (si->ifindex)
		        {
                          ifp = if_lookup_by_name_vrf (si->ifname, si->vrf_id);
			  if (ifp)
                            si->ifindex = ifp->ifindex;
                          else
			    continue;
                        }
		      static_install_route (afi, safi, &rn->p, si);
		    }
		}
	    }
	}
    }
  return 0;
}

/* Callback upon disabling a VRF. */
static int
zebra_vrf_disable (vrf_id_t vrf_id, const char *name, void **info)
{
  struct zebra_vrf *zvrf = (struct zebra_vrf *)(*info);
  struct route_table *stable = NULL;
  struct route_node *rn = NULL;
  afi_t afi;
  safi_t safi;

  if (IS_ZEBRA_DEBUG_KERNEL)
    zlog_debug ("VRF %s id %u is now disabled.",
                zvrf->name, zvrf->vrf_id);

  for (afi = AFI_IP; afi < AFI_MAX; afi++)
    {
      for (safi = SAFI_UNICAST ; safi < SAFI_MAX ; safi++)
	{
	  stable = zvrf->stable[afi][safi];
	  if (stable)
	    {
	      for (rn = route_top (stable); rn; rn = route_next (rn))
		{
                  if (rn->info)
		    static_uninstall_route(afi, safi, &rn->p, rn->info);
		}
	    }
	}
    }
  return 0;
}

static int
zebra_vrf_delete (vrf_id_t vrf_id, const char *name, void **info)
{
  struct zebra_vrf *zvrf = (struct zebra_vrf *) (*info);

  assert (zvrf);

  zebra_vrf_delete_update (zvrf);

  rib_close_table (zvrf->table[AFI_IP][SAFI_UNICAST]);
  rib_close_table (zvrf->table[AFI_IP6][SAFI_UNICAST]);

  list_delete_all_node (zvrf->rid_all_sorted_list);
  list_delete_all_node (zvrf->rid_lo_sorted_list);

  zvrf->vrf_id = VRF_UNKNOWN;

  *info = NULL;
  return 0;
}

/* Lookup the routing table in a VRF based on both VRF-Id and table-id.
 * NOTE: Table-id is relevant only in the Default VRF.
 */
struct route_table *
zebra_vrf_table_with_table_id (afi_t afi, safi_t safi,
                               vrf_id_t vrf_id, u_int32_t table_id)
{
  struct route_table *table = NULL;

  if (afi >= AFI_MAX || safi >= SAFI_MAX)
    return NULL;

  if (vrf_id == VRF_DEFAULT)
    {
      if (table_id == RT_TABLE_MAIN ||
          table_id == zebrad.rtm_table_default)
        table = zebra_vrf_table (afi, safi, vrf_id);
      else
        table = zebra_vrf_other_route_table (afi, table_id, vrf_id);
    }
  else
      table = zebra_vrf_table (afi, safi, vrf_id);

  return table;
}

/*
 * Create a routing table for the specific AFI/SAFI in the given VRF.
 */
static void
zebra_vrf_table_create (struct zebra_vrf *zvrf, afi_t afi, safi_t safi)
{
  rib_table_info_t *info;
  struct route_table *table;

  assert (!zvrf->table[afi][safi]);

  table = route_table_init ();
  zvrf->table[afi][safi] = table;

  info = XCALLOC (MTYPE_RIB_TABLE_INFO, sizeof (*info));
  info->zvrf = zvrf;
  info->afi = afi;
  info->safi = safi;
  table->info = info;
}

/* Allocate new zebra VRF. */
struct zebra_vrf *
zebra_vrf_alloc (vrf_id_t vrf_id, const char *name)
{
  struct zebra_vrf *zvrf;

  zvrf = XCALLOC (MTYPE_ZEBRA_VRF, sizeof (struct zebra_vrf));

  /* Allocate routing table and static table.  */
  zebra_vrf_table_create (zvrf, AFI_IP, SAFI_UNICAST);
  zebra_vrf_table_create (zvrf, AFI_IP6, SAFI_UNICAST);
  zvrf->stable[AFI_IP][SAFI_UNICAST] = route_table_init ();
  zvrf->stable[AFI_IP6][SAFI_UNICAST] = route_table_init ();
  zebra_vrf_table_create (zvrf, AFI_IP, SAFI_MULTICAST);
  zebra_vrf_table_create (zvrf, AFI_IP6, SAFI_MULTICAST);
  zvrf->stable[AFI_IP][SAFI_MULTICAST] = route_table_init ();
  zvrf->stable[AFI_IP6][SAFI_MULTICAST] = route_table_init ();

  zvrf->rnh_table[AFI_IP] = route_table_init();
  zvrf->rnh_table[AFI_IP6] = route_table_init();

  zvrf->import_check_table[AFI_IP] = route_table_init();
  zvrf->import_check_table[AFI_IP6] = route_table_init();

  /* Set VRF ID */
  zvrf->vrf_id = vrf_id;

  if (name)
    {
      strncpy (zvrf->name, name, strlen(name));
      zvrf->name[strlen(name)] = '\0';
    }

  return zvrf;
}

/* Lookup VRF by identifier.  */
struct zebra_vrf *
zebra_vrf_lookup (vrf_id_t vrf_id)
{
  return vrf_info_lookup (vrf_id);
}

/* Lookup the zvrf in the zvrf_list. */
struct zebra_vrf *
zebra_vrf_list_lookup_by_name (const char *name)
{
  struct listnode *node;
  struct zebra_vrf *zvrf;

  if (!name)
    name = VRF_DEFAULT_NAME;

  for (ALL_LIST_ELEMENTS_RO (zvrf_list, node, zvrf))
    {
      if (strcmp(name, zvrf->name) == 0)
        return zvrf;
    }
  return NULL;
}

/* Lookup the routing table in an enabled VRF. */
struct route_table *
zebra_vrf_table (afi_t afi, safi_t safi, vrf_id_t vrf_id)
{
  struct zebra_vrf *zvrf = vrf_info_lookup (vrf_id);

  if (!zvrf)
    return NULL;

  if (afi >= AFI_MAX || safi >= SAFI_MAX)
    return NULL;

  return zvrf->table[afi][safi];
}

/* Lookup the static routing table in a VRF. */
struct route_table *
zebra_vrf_static_table (afi_t afi, safi_t safi, struct zebra_vrf *zvrf)
{
  if (!zvrf)
    return NULL;

  if (afi >= AFI_MAX || safi >= SAFI_MAX)
    return NULL;

  return zvrf->stable[afi][safi];
}

struct route_table *
zebra_vrf_other_route_table (afi_t afi, u_int32_t table_id, vrf_id_t vrf_id)
{
  struct zebra_vrf *zvrf;
  rib_table_info_t *info;
  struct route_table *table;

  zvrf = vrf_info_lookup (vrf_id);
  if (! zvrf)
    return NULL;

  if(afi >= AFI_MAX)
    return NULL;

  if (table_id >= ZEBRA_KERNEL_TABLE_MAX)
    return NULL;

  if ((vrf_id == VRF_DEFAULT) && (table_id != RT_TABLE_MAIN) && (table_id != zebrad.rtm_table_default))
    {
      if (zvrf->other_table[afi][table_id] == NULL)
        {
          table = route_table_init();
          info = XCALLOC (MTYPE_RIB_TABLE_INFO, sizeof (*info));
          info->zvrf = zvrf;
          info->afi = afi;
          info->safi = SAFI_UNICAST;
          table->info = info;
          zvrf->other_table[afi][table_id] = table;
        }

      return (zvrf->other_table[afi][table_id]);
    }

  return zvrf->table[afi][SAFI_UNICAST];
}

/* Zebra VRF initialization. */
void
zebra_vrf_init (void)
{
  vrf_add_hook (VRF_NEW_HOOK, zebra_vrf_new);
  vrf_add_hook (VRF_ENABLE_HOOK, zebra_vrf_enable);
  vrf_add_hook (VRF_DISABLE_HOOK, zebra_vrf_disable);
  vrf_add_hook (VRF_DELETE_HOOK, zebra_vrf_delete);

  zvrf_list = list_new ();

  vrf_init ();
}
Commit	Line	Data
7c551956 DS	1	/*
	2	* Copyright (C) 2016 CumulusNetworks
	3	* Donald Sharp
	4	*
	5	* This file is part of Quagga
	6	*
	7	* Quagga is free software; you can redistribute it and/or modify it
	8	* under the terms of the GNU General Public License as published by the
	9	* Free Software Foundation; either version 2, or (at your option) any
	10	* later version.
	11	*
	12	* Quagga 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	*
	17	* You should have received a copy of the GNU General Public License
	18	* along with GNU Zebra; see the file COPYING. If not, write to the Free
	19	* Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
	20	* 02111-1307, USA.
	21	*/
	22	#include <zebra.h>
	23
	24	#include "log.h"
	25	#include "linklist.h"
4a1ab8e4	26	#include "memory.h"
7c551956 DS	27
	28	#include "zebra/debug.h"
	29	#include "zebra/zserv.h"
	30	#include "zebra/rib.h"
	31	#include "zebra/zebra_vrf.h"
	32	#include "zebra/router-id.h"
4a1ab8e4	33	#include "zebra/zebra_memory.h"
28f6dde8	34	#include "zebra/zebra_static.h"
7c551956 DS	35
7c551956 DS	36	extern struct zebra_t zebrad;
871d39b3	37	struct list *zvrf_list;
7c551956 DS	38
	39	/* VRF information update. */
	40	static void
	41	zebra_vrf_add_update (struct zebra_vrf *zvrf)
	42	{
	43	struct listnode node, nnode;
	44	struct zserv *client;
	45
	46	if (IS_ZEBRA_DEBUG_EVENT)
	47	zlog_debug ("MESSAGE: ZEBRA_VRF_ADD %s", zvrf->name);
	48
	49	for (ALL_LIST_ELEMENTS (zebrad.client_list, node, nnode, client))
	50	zsend_vrf_add (client, zvrf);
	51	}
	52
	53	static void
	54	zebra_vrf_delete_update (struct zebra_vrf *zvrf)
	55	{
	56	struct listnode node, nnode;
	57	struct zserv *client;
	58
	59	if (IS_ZEBRA_DEBUG_EVENT)
	60	zlog_debug ("MESSAGE: ZEBRA_VRF_DELETE %s", zvrf->name);
	61
	62	for (ALL_LIST_ELEMENTS (zebrad.client_list, node, nnode, client))
	63	zsend_vrf_delete (client, zvrf);
	64	}
	65
	66	void
	67	zebra_vrf_update_all (struct zserv *client)
	68	{
	69	struct vrf *vrf;
	70	vrf_iter_t iter;
	71
	72	for (iter = vrf_first (); iter != VRF_ITER_INVALID; iter = vrf_next (iter))
	73	{
	74	if ((vrf = vrf_iter2vrf (iter)) && vrf->vrf_id)
	75	zsend_vrf_add (client, vrf_info_lookup (vrf->vrf_id));
	76	}
	77	}
	78
	79	/* Callback upon creating a new VRF. */
	80	static int
	81	zebra_vrf_new (vrf_id_t vrf_id, const char name, void *info)
	82	{
	83	struct zebra_vrf zvrf = info;
	84
3f6d6a5d DS	85	if (IS_ZEBRA_DEBUG_EVENT)
3f6d6a5d DS	86	zlog_info ("ZVRF %s with id %u", name, vrf_id);
7c551956 DS	87
	88	if (! zvrf)
	89	{
871d39b3 DS	90	zvrf = zebra_vrf_list_lookup_by_name (name);
	91	if (!zvrf)
	92	{
	93	zvrf = zebra_vrf_alloc (vrf_id, name);
	94	zvrf->zns = zebra_ns_lookup (NS_DEFAULT); /* Point to the global (single) NS */
	95	info = (void )zvrf;
	96	router_id_init (zvrf);
	97	listnode_add_sort (zvrf_list, zvrf);
	98	}
	99	else
	100	{
	101	info = (void )zvrf;
	102	router_id_init (zvrf);
	103	}
7c551956 DS	104	}
7c551956 DS	105
34f8e6af DS	106	if (zvrf->vrf_id == VRF_UNKNOWN)
	107	zvrf->vrf_id = vrf_id;
	108
7c551956 DS	109	return 0;
	110	}
	111
fb148af4 DS	112	/*
	113	* Moving an interface amongst different vrf's
	114	* causes the interface to get a new ifindex
	115	* so we need to find static routes with
	116	* the old ifindex and replace with new
	117	* ifindex to insert back into the table
	118	*/
	119	void
	120	zebra_vrf_static_route_interface_fixup (struct interface *ifp)
	121	{
	122	afi_t afi;
	123	safi_t safi;
	124	struct zebra_vrf *zvrf = zebra_vrf_lookup (ifp->vrf_id);
	125	struct route_table *stable = NULL;
	126	struct route_node *rn = NULL;
	127	struct static_route *si = NULL;
	128
	129	if (!zvrf)
	130	return;
	131
	132	for (afi = AFI_IP; afi < AFI_MAX; afi++)
	133	{
	134	for (safi = SAFI_UNICAST ; safi < SAFI_MAX ; safi++)
	135	{
	136	stable = zvrf->stable[afi][safi];
	137	if (stable)
	138	for (rn = route_top (stable); rn; rn = route_next (rn))
	139	{
	140	if (rn->info)
	141	{
	142	si = rn->info;
	143	if ((strcmp (si->ifname, ifp->name) == 0) &&
	144	(si->ifindex != ifp->ifindex))
	145	{
	146	si->ifindex = ifp->ifindex;
	147	static_install_route (afi, safi, &rn->p, si);
	148	}
	149	}
	150	}
	151	}
	152	}
	153
	154	}
	155
7c551956 DS	156	/* Callback upon enabling a VRF. */
	157	static int
	158	zebra_vrf_enable (vrf_id_t vrf_id, const char name, void *info)
	159	{
	160	struct zebra_vrf zvrf = (struct zebra_vrf ) (*info);
fb148af4 DS	161	struct route_table *stable = NULL;
	162	struct route_node *rn = NULL;
	163	struct static_route *si = NULL;
	164	struct interface *ifp = NULL;
	165	afi_t afi;
	166	safi_t safi;
7c551956 DS	167
	168	assert (zvrf);
	169
	170	zebra_vrf_add_update (zvrf);
	171
fb148af4 DS	172	for (afi = AFI_IP; afi < AFI_MAX; afi++)
	173	{
	174	for (safi = SAFI_UNICAST ; safi < SAFI_MAX ; safi++)
	175	{
	176	stable = zvrf->stable[afi][safi];
	177	if (stable)
	178	{
	179	for (rn = route_top (stable); rn; rn = route_next (rn))
	180	{
	181	if (rn->info)
	182	{
	183	si = rn->info;
	184	si->vrf_id = vrf_id;
	185	if (si->ifindex)
	186	{
	187	ifp = if_lookup_by_name_vrf (si->ifname, si->vrf_id);
	188	if (ifp)
	189	si->ifindex = ifp->ifindex;
	190	else
	191	continue;
	192	}
	193	static_install_route (afi, safi, &rn->p, si);
	194	}
	195	}
	196	}
	197	}
	198	}
7c551956 DS	199	return 0;
	200	}
	201
	202	/* Callback upon disabling a VRF. */
	203	static int
	204	zebra_vrf_disable (vrf_id_t vrf_id, const char name, void *info)
	205	{
	206	struct zebra_vrf zvrf = (struct zebra_vrf )(*info);
fb148af4 DS	207	struct route_table *stable = NULL;
	208	struct route_node *rn = NULL;
	209	afi_t afi;
	210	safi_t safi;
7c551956 DS	211
	212	if (IS_ZEBRA_DEBUG_KERNEL)
	213	zlog_debug ("VRF %s id %u is now disabled.",
	214	zvrf->name, zvrf->vrf_id);
	215
fb148af4 DS	216	for (afi = AFI_IP; afi < AFI_MAX; afi++)
	217	{
	218	for (safi = SAFI_UNICAST ; safi < SAFI_MAX ; safi++)
	219	{
	220	stable = zvrf->stable[afi][safi];
	221	if (stable)
	222	{
	223	for (rn = route_top (stable); rn; rn = route_next (rn))
	224	{
	225	if (rn->info)
	226	static_uninstall_route(afi, safi, &rn->p, rn->info);
	227	}
	228	}
	229	}
	230	}
7c551956 DS	231	return 0;
	232	}
	233
	234	static int
	235	zebra_vrf_delete (vrf_id_t vrf_id, const char name, void *info)
	236	{
	237	struct zebra_vrf zvrf = (struct zebra_vrf ) (*info);
	238
	239	assert (zvrf);
	240
	241	zebra_vrf_delete_update (zvrf);
	242
	243	rib_close_table (zvrf->table[AFI_IP][SAFI_UNICAST]);
	244	rib_close_table (zvrf->table[AFI_IP6][SAFI_UNICAST]);
	245
	246	list_delete_all_node (zvrf->rid_all_sorted_list);
	247	list_delete_all_node (zvrf->rid_lo_sorted_list);
	248
871d39b3	249	zvrf->vrf_id = VRF_UNKNOWN;
7c551956	250
871d39b3	251	*info = NULL;
7c551956 DS	252	return 0;
	253	}
	254
	255	/* Lookup the routing table in a VRF based on both VRF-Id and table-id.
	256	* NOTE: Table-id is relevant only in the Default VRF.
	257	*/
	258	struct route_table *
	259	zebra_vrf_table_with_table_id (afi_t afi, safi_t safi,
	260	vrf_id_t vrf_id, u_int32_t table_id)
	261	{
	262	struct route_table *table = NULL;
	263
	264	if (afi >= AFI_MAX \|\| safi >= SAFI_MAX)
	265	return NULL;
	266
	267	if (vrf_id == VRF_DEFAULT)
	268	{
	269	if (table_id == RT_TABLE_MAIN \|\|
	270	table_id == zebrad.rtm_table_default)
	271	table = zebra_vrf_table (afi, safi, vrf_id);
	272	else
	273	table = zebra_vrf_other_route_table (afi, table_id, vrf_id);
	274	}
	275	else
	276	table = zebra_vrf_table (afi, safi, vrf_id);
	277
	278	return table;
	279	}
	280
	281	/*
	282	* Create a routing table for the specific AFI/SAFI in the given VRF.
	283	*/
	284	static void
	285	zebra_vrf_table_create (struct zebra_vrf *zvrf, afi_t afi, safi_t safi)
	286	{
	287	rib_table_info_t *info;
	288	struct route_table *table;
	289
	290	assert (!zvrf->table[afi][safi]);
	291
	292	table = route_table_init ();
	293	zvrf->table[afi][safi] = table;
	294
	295	info = XCALLOC (MTYPE_RIB_TABLE_INFO, sizeof (*info));
	296	info->zvrf = zvrf;
	297	info->afi = afi;
	298	info->safi = safi;
	299	table->info = info;
	300	}
	301
	302	/* Allocate new zebra VRF. */
	303	struct zebra_vrf *
	304	zebra_vrf_alloc (vrf_id_t vrf_id, const char *name)
	305	{
	306	struct zebra_vrf *zvrf;
	307
	308	zvrf = XCALLOC (MTYPE_ZEBRA_VRF, sizeof (struct zebra_vrf));
	309
	310	/* Allocate routing table and static table. */
	311	zebra_vrf_table_create (zvrf, AFI_IP, SAFI_UNICAST);
	312	zebra_vrf_table_create (zvrf, AFI_IP6, SAFI_UNICAST);
	313	zvrf->stable[AFI_IP][SAFI_UNICAST] = route_table_init ();
	314	zvrf->stable[AFI_IP6][SAFI_UNICAST] = route_table_init ();
	315	zebra_vrf_table_create (zvrf, AFI_IP, SAFI_MULTICAST);
316	zebra_vrf_table_create (zvrf, AFI_IP6, SAFI_MULTICAST);
317	zvrf->stable[AFI_IP][SAFI_MULTICAST] = route_table_init ();
318	zvrf->stable[AFI_IP6][SAFI_MULTICAST] = route_table_init ();
319
320	zvrf->rnh_table[AFI_IP] = route_table_init();
321	zvrf->rnh_table[AFI_IP6] = route_table_init();
322
323	zvrf->import_check_table[AFI_IP] = route_table_init();
324	zvrf->import_check_table[AFI_IP6] = route_table_init();
325
326	/* Set VRF ID */
327	zvrf->vrf_id = vrf_id;
328
329	if (name)
330	{
331	strncpy (zvrf->name, name, strlen(name));
332	zvrf->name[strlen(name)] = '\0';
333	}
334
335	return zvrf;
336	}
337
338	/* Lookup VRF by identifier. */
339	struct zebra_vrf *
340	zebra_vrf_lookup (vrf_id_t vrf_id)
341	{
342	return vrf_info_lookup (vrf_id);
343	}
344
871d39b3 DS	345	/* Lookup the zvrf in the zvrf_list. */
	346	struct zebra_vrf *
	347	zebra_vrf_list_lookup_by_name (const char *name)
	348	{
	349	struct listnode *node;
	350	struct zebra_vrf *zvrf;
	351
a3d21ef3 DS	352	if (!name)
	353	name = VRF_DEFAULT_NAME;
	354
	355	for (ALL_LIST_ELEMENTS_RO (zvrf_list, node, zvrf))
	356	{
	357	if (strcmp(name, zvrf->name) == 0)
	358	return zvrf;
	359	}
871d39b3 DS	360	return NULL;
	361	}
	362
7c551956 DS	363	/* Lookup the routing table in an enabled VRF. */
	364	struct route_table *
	365	zebra_vrf_table (afi_t afi, safi_t safi, vrf_id_t vrf_id)
	366	{
	367	struct zebra_vrf *zvrf = vrf_info_lookup (vrf_id);
	368
	369	if (!zvrf)
	370	return NULL;
	371
	372	if (afi >= AFI_MAX \|\| safi >= SAFI_MAX)
	373	return NULL;
	374
	375	return zvrf->table[afi][safi];
	376	}
	377
	378	/* Lookup the static routing table in a VRF. */
	379	struct route_table *
01bb6d57	380	zebra_vrf_static_table (afi_t afi, safi_t safi, struct zebra_vrf *zvrf)
7c551956	381	{
7c551956 DS	382	if (!zvrf)
	383	return NULL;
	384
	385	if (afi >= AFI_MAX \|\| safi >= SAFI_MAX)
	386	return NULL;
	387
	388	return zvrf->stable[afi][safi];
	389	}
	390
	391	struct route_table *
	392	zebra_vrf_other_route_table (afi_t afi, u_int32_t table_id, vrf_id_t vrf_id)
	393	{
	394	struct zebra_vrf *zvrf;
	395	rib_table_info_t *info;
	396	struct route_table *table;
	397
	398	zvrf = vrf_info_lookup (vrf_id);
	399	if (! zvrf)
	400	return NULL;
	401
	402	if(afi >= AFI_MAX)
	403	return NULL;
	404
	405	if (table_id >= ZEBRA_KERNEL_TABLE_MAX)
	406	return NULL;
	407
	408	if ((vrf_id == VRF_DEFAULT) && (table_id != RT_TABLE_MAIN) && (table_id != zebrad.rtm_table_default))
	409	{
	410	if (zvrf->other_table[afi][table_id] == NULL)
	411	{
	412	table = route_table_init();
	413	info = XCALLOC (MTYPE_RIB_TABLE_INFO, sizeof (*info));
	414	info->zvrf = zvrf;
	415	info->afi = afi;
	416	info->safi = SAFI_UNICAST;
	417	table->info = info;
	418	zvrf->other_table[afi][table_id] = table;
	419	}
	420
	421	return (zvrf->other_table[afi][table_id]);
	422	}
	423
	424	return zvrf->table[afi][SAFI_UNICAST];
	425	}
	426
	427	/* Zebra VRF initialization. */
	428	void
	429	zebra_vrf_init (void)
	430	{
	431	vrf_add_hook (VRF_NEW_HOOK, zebra_vrf_new);
	432	vrf_add_hook (VRF_ENABLE_HOOK, zebra_vrf_enable);
	433	vrf_add_hook (VRF_DISABLE_HOOK, zebra_vrf_disable);
	434	vrf_add_hook (VRF_DELETE_HOOK, zebra_vrf_delete);
	435
871d39b3 DS	436	zvrf_list = list_new ();
871d39b3 DS	437
7c551956 DS	438	vrf_init ();
7c551956 DS	439	}