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/*
* Copyright 2013 Google Inc.
*
* This program 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
* of the License, or (at your option) any later version.
*
* This program 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; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*/
/*
* Author: ncardwell@google.com (Neal Cardwell)
*
* Interface for module for formatting MPLS packets.
*/
#ifndef __MPLS_PACKET_H__
#define __MPLS_PACKET_H__
#include "types.h"
#include "mpls.h"
#include "packet.h"
/* Fill in the given MPLS label stack entry with the given field
* values, validating that actual parameter value fits inside the
* width of the field on the wire. On success, return STATUS_OK; on
* error return STATUS_ERR and fill in a malloc-allocated error
* message in *error.
*/
extern int new_mpls_stack_entry(s64 label, s64 traffic_class,
bool is_stack_bottom, s64 ttl,
struct mpls *mpls, char **error);
/* Append an MPLS header to the end of the given packet. On success,
* return STATUS_OK; on error return STATUS_ERR and fill in a
* malloc-allocated error message in *error.
*/
extern int mpls_header_append(struct packet *packet,
struct mpls_stack *mpls_stack,
char **error);
/* Finalize the MPLS header by filling in all necessary fields that
* were not filled in at parse time.
*/
extern int mpls_header_finish(struct packet *packet,
struct header *header, struct header *next_inner);
#endif /* __MPLS_PACKET_H__ */
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