
/*
 * Copyright (c) 2001-2002 Packet Design, LLC.
 * All rights reserved.
 * 
 * Subject to the following obligations and disclaimer of warranty,
 * use and redistribution of this software, in source or object code
 * forms, with or without modifications are expressly permitted by
 * Packet Design; provided, however, that:
 * 
 *    (i)  Any and all reproductions of the source or object code
 *         must include the copyright notice above and the following
 *         disclaimer of warranties; and
 *    (ii) No rights are granted, in any manner or form, to use
 *         Packet Design trademarks, including the mark "PACKET DESIGN"
 *         on advertising, endorsements, or otherwise except as such
 *         appears in the above copyright notice or in the software.
 * 
 * THIS SOFTWARE IS BEING PROVIDED BY PACKET DESIGN "AS IS", AND
 * TO THE MAXIMUM EXTENT PERMITTED BY LAW, PACKET DESIGN MAKES NO
 * REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, REGARDING
 * THIS SOFTWARE, INCLUDING WITHOUT LIMITATION, ANY AND ALL IMPLIED
 * WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE,
 * OR NON-INFRINGEMENT.  PACKET DESIGN DOES NOT WARRANT, GUARANTEE,
 * OR MAKE ANY REPRESENTATIONS REGARDING THE USE OF, OR THE RESULTS
 * OF THE USE OF THIS SOFTWARE IN TERMS OF ITS CORRECTNESS, ACCURACY,
 * RELIABILITY OR OTHERWISE.  IN NO EVENT SHALL PACKET DESIGN BE
 * LIABLE FOR ANY DAMAGES RESULTING FROM OR ARISING OUT OF ANY USE
 * OF THIS SOFTWARE, INCLUDING WITHOUT LIMITATION, ANY DIRECT,
 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, PUNITIVE, OR CONSEQUENTIAL
 * DAMAGES, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, LOSS OF
 * USE, DATA OR PROFITS, HOWEVER CAUSED AND UNDER ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
 * THE USE OF THIS SOFTWARE, EVEN IF PACKET DESIGN IS ADVISED OF
 * THE POSSIBILITY OF SUCH DAMAGE.
 *
 * Author: Archie Cobbs <archie@freebsd.org>
 */

#ifndef _PDEL_PPP_PPP_LCP_H_
#define _PDEL_PPP_PPP_LCP_H_

struct ppp_fsm;
struct ppp_node;

/*
 * LCP constants
 *
 * For now fudge LCP MRU down to 1400 to avoid fragmentation bugs
 * somewhere (guarentee an PPP frame plus L2TP/IPSec overhead fits in
 * an ethernet datagram) - ML PPP is different, 1600 works, but 1614 doesnt
 * determined by Win2k versus XP experimentation.
 */
#define LCP_MIN_MRU		64
#define LCP_MAX_MRU		1400		/* was 8192 */
#define LCP_DEFAULT_MRU		1400		/* was 1500 */

#define LCP_MIN_MRRU		1000		/* was 1500 */
#define LCP_MAX_MRRU		1600		/* was 8192 */
#define LCP_DEFAULT_MRRU	1600		/* was 1600 */

/*
 * Configuration for an LCP FSM
 */
struct ppp_lcp_config {

	u_int16_t	min_mru[2];
	u_int16_t	max_mru[2];
	u_int16_t	min_mrru[2];
	u_int16_t	max_mrru[2];

	u_int32_t	accm;

	u_char		auth[2][PPP_AUTH_MAX];

	u_char		multilink[2];	/* request, both, or neither */
	u_char		shortseq[2];
	u_char		pfcomp[2];
	u_char		acfcomp[2];

	struct ppp_eid	eid;
};

/*
 * LCP request state
 */
struct ppp_lcp_req {
	u_int16_t		mru[2];
	u_int32_t		accm[2];
	u_char			acfcomp[2];
	u_char			pfcomp[2];
	u_int32_t		magic[2];
	enum ppp_auth_index	auth[2];
	u_char			auth_rej[PPP_AUTH_MAX];
	u_char			multilink[2];
	u_int16_t		mrru[2];
	u_char			shortseq[2];
	struct ppp_eid		eid[2];
};

__BEGIN_DECLS

/* FSM types for LCP (normal) and MP LCP (multilink-bundle) */
extern const	struct ppp_fsm_type ppp_fsm_lcp;
extern const	struct ppp_fsm_type ppp_fsm_mp_lcp;

/* LCP option descriptors */
extern const	struct ppp_fsm_optdesc lcp_opt_desc[];

/* Functions */
extern struct	ppp_fsm_instance *ppp_lcp_create(struct ppp_lcp_config *conf);
extern void	ppp_lcp_get_req(struct ppp_fsm *lcp, struct ppp_lcp_req *req);

__END_DECLS

#endif	/* _PDEL_PPP_PPP_LCP_H_ */
