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zebra: add way to determine VRF/AFI/SAFI of table

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Add some code that allows us to determine which VRF and AFI/SAFI a
given RIB table corresponds to.

  * zebra/rib.h

    Add rib_table_info_t structure, which contains information about
    the VRF, AFI and SAFI that a table is for.

  * zebra/zebra_rib.c

    - Add the vrf_table_create() function, which creates a table and
      sets its 'info' pointer to a newly created rib_table_info_t.
      The 'info' pointer allows us to go from a route_node or a table
      to the associated vrf.

    - vrf_alloc(): Use vrf_create_table() to create tables.

  * lib/memtypes.c

    Add memory type for rib_table_info_t.

Signed-off-by: Avneesh Sachdev <avneesh@opensourcerouting.org>
Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
This commit is contained in:
Avneesh Sachdev 2012-11-13 22:48:54 +00:00 committed by David Lamparter
parent 9fd92e3c4b
commit 1b5ed1b054
3 changed files with 62 additions and 4 deletions
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1
lib/memtypes.c
View File

@ -83,6 +83,7 @@ struct memory_list memory_list_zebra[] =
{ MTYPE_STATIC_IPV4, "Static IPv4 route" },
{ MTYPE_STATIC_IPV6, "Static IPv6 route" },
{ MTYPE_RIB_DEST, "RIB destination" },
{ MTYPE_RIB_TABLE_INFO, "RIB table info" },
{ -1, NULL },
};

36
zebra/rib.h
View File

@ -268,6 +268,24 @@ struct vrf
struct route_table *stable[AFI_MAX][SAFI_MAX];
};
/*
* rib_table_info_t
*
* Structure that is hung off of a route_table that holds information about
* the table.
*/
typedef struct rib_table_info_t_
{
/*
* Back pointer to vrf.
*/
struct vrf *vrf;
afi_t afi;
safi_t safi;
} rib_table_info_t;
extern struct nexthop *nexthop_ifindex_add (struct rib *, unsigned int);
extern struct nexthop *nexthop_ifname_add (struct rib *, char *);
extern struct nexthop *nexthop_blackhole_add (struct rib *);
@ -361,6 +379,15 @@ extern int rib_gc_dest (struct route_node *rn);
* Inline functions.
*/
/*
* rib_table_info
*/
static inline rib_table_info_t *
rib_table_info (struct route_table *table)
{
return (rib_table_info_t *) table->info;
}
/*
* rib_dest_from_rnode
*/
@ -417,4 +444,13 @@ rib_dest_table (rib_dest_t *dest)
return dest->rnode->table;
}
/*
* rib_dest_vrf
*/
static inline struct vrf *
rib_dest_vrf (rib_dest_t *dest)
{
return rib_table_info (rib_dest_table (dest))->vrf;
}
#endif /*_ZEBRA_RIB_H */

29
zebra/zebra_rib.c
View File

@ -74,6 +74,27 @@ static const struct
/* Vector for routing table. */
static vector vrf_vector;
/*
* vrf_table_create
*/
static void
vrf_table_create (struct vrf *vrf, afi_t afi, safi_t safi)
{
rib_table_info_t *info;
struct route_table *table;
assert (!vrf->table[afi][safi]);
table = route_table_init ();
vrf->table[afi][safi] = table;
info = XCALLOC (MTYPE_RIB_TABLE_INFO, sizeof (*info));
info->vrf = vrf;
info->afi = afi;
info->safi = safi;
table->info = info;
}
/* Allocate new VRF. */
static struct vrf *
vrf_alloc (const char *name)
@ -87,12 +108,12 @@ vrf_alloc (const char *name)
vrf->name = XSTRDUP (MTYPE_VRF_NAME, name);
/* Allocate routing table and static table. */
vrf->table[AFI_IP][SAFI_UNICAST] = route_table_init ();
vrf->table[AFI_IP6][SAFI_UNICAST] = route_table_init ();
vrf_table_create (vrf, AFI_IP, SAFI_UNICAST);
vrf_table_create (vrf, AFI_IP6, SAFI_UNICAST);
vrf->stable[AFI_IP][SAFI_UNICAST] = route_table_init ();
vrf->stable[AFI_IP6][SAFI_UNICAST] = route_table_init ();
vrf->table[AFI_IP][SAFI_MULTICAST] = route_table_init ();
vrf->table[AFI_IP6][SAFI_MULTICAST] = route_table_init ();
vrf_table_create (vrf, AFI_IP, SAFI_MULTICAST);
vrf_table_create (vrf, AFI_IP6, SAFI_MULTICAST);
vrf->stable[AFI_IP][SAFI_MULTICAST] = route_table_init ();
vrf->stable[AFI_IP6][SAFI_MULTICAST] = route_table_init ();