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/*
* Zebra MPLS Data structures and definitions
* Copyright (C) 2015 Cumulus Networks, Inc.
*
* 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 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.
*/
#ifndef _ZEBRA_MPLS_H
#define _ZEBRA_MPLS_H
#include "prefix.h"
#include "table.h"
#include "queue.h"
#include "hash.h"
#include "jhash.h"
#include "nexthop.h"
#include "vty.h"
#include "memory.h"
#include "mpls.h"
#include "zebra/zserv.h"
/* Definitions and macros. */
#define NHLFE_FAMILY(nhlfe) \
(((nhlfe)->nexthop->type == NEXTHOP_TYPE_IPV6 || \
(nhlfe)->nexthop->type == NEXTHOP_TYPE_IPV6_IFINDEX) ? AF_INET6 : AF_INET)
/* Typedefs */
typedef struct zebra_ile_t_ zebra_ile_t;
typedef struct zebra_snhlfe_t_ zebra_snhlfe_t;
typedef struct zebra_slsp_t_ zebra_slsp_t;
typedef struct zebra_nhlfe_t_ zebra_nhlfe_t;
typedef struct zebra_lsp_t_ zebra_lsp_t;
/* LSP types. */
enum lsp_types_t
{
ZEBRA_LSP_INVALID = 0, /* Invalid. */
ZEBRA_LSP_STATIC = 1, /* Static LSP. */
};
/*
* (Outgoing) nexthop label forwarding entry configuration
*/
struct zebra_snhlfe_t_
{
/* Nexthop information */
enum nexthop_types_t gtype;
union g_addr gate;
char *ifname;
ifindex_t ifindex;
/* Out label. */
mpls_label_t out_label;
/* Backpointer to base entry. */
zebra_slsp_t *slsp;
/* Pointers to more outgoing information for same in-label */
zebra_snhlfe_t *next;
zebra_snhlfe_t *prev;
};
/*
* (Outgoing) nexthop label forwarding entry
*/
struct zebra_nhlfe_t_
{
/* Type of entry - static etc. */
enum lsp_types_t type;
/* Nexthop information (with outgoing label) */
struct nexthop *nexthop;
/* Backpointer to base entry. */
zebra_lsp_t *lsp;
/* Runtime info - flags, pointers etc. */
u_int32_t flags;
#define NHLFE_FLAG_CHANGED (1 << 0)
#define NHLFE_FLAG_SELECTED (1 << 1)
#define NHLFE_FLAG_MULTIPATH (1 << 2)
#define NHLFE_FLAG_DELETED (1 << 3)
#define NHLFE_FLAG_INSTALLED (1 << 4)
zebra_nhlfe_t *next;
zebra_nhlfe_t *prev;
u_char distance;
};
/*
* Incoming label entry
*/
struct zebra_ile_t_
{
mpls_label_t in_label;
};
/*
* Label swap entry static configuration.
*/
struct zebra_slsp_t_
{
/* Incoming label */
zebra_ile_t ile;
/* List of outgoing nexthop static configuration */
zebra_snhlfe_t *snhlfe_list;
};
/*
* Label swap entry (ile -> list of nhlfes)
*/
struct zebra_lsp_t_
{
/* Incoming label */
zebra_ile_t ile;
/* List of NHLFE, pointer to best and num equal-cost. */
zebra_nhlfe_t *nhlfe_list;
zebra_nhlfe_t *best_nhlfe;
u_int32_t num_ecmp;
/* Flags */
u_int32_t flags;
#define LSP_FLAG_SCHEDULED (1 << 0)
#define LSP_FLAG_INSTALLED (1 << 1)
#define LSP_FLAG_CHANGED (1 << 2)
/* Address-family of NHLFE - saved here for delete. All NHLFEs */
/* have to be of the same AF */
u_char addr_family;
};
#endif /*_ZEBRA_MPLS_H */
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