mirror of
https://github.com/freebsd/freebsd-src
synced 2024-11-05 18:22:52 +00:00
32ef6b86b5
protocol packets. This queue is the only one being enabled until network phase has been reached.
116 lines
4 KiB
C
116 lines
4 KiB
C
/*
|
|
* Defines for synchronous PPP/Cisco link level subroutines.
|
|
*
|
|
* Copyright (C) 1994 Cronyx Ltd.
|
|
* Author: Serge Vakulenko, <vak@cronyx.ru>
|
|
*
|
|
* Heavily revamped to conform to RFC 1661.
|
|
* Copyright (C) 1997, Joerg Wunsch.
|
|
*
|
|
* This software is distributed with NO WARRANTIES, not even the implied
|
|
* warranties for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
|
|
*
|
|
* Authors grant any other persons or organizations permission to use
|
|
* or modify this software as long as this message is kept with the software,
|
|
* all derivative works or modified versions.
|
|
*
|
|
* From: Version 1.7, Wed Jun 7 22:12:02 MSD 1995
|
|
*
|
|
* $Id: if_sppp.h,v 1.5 1997/05/19 22:03:08 joerg Exp $
|
|
*/
|
|
|
|
#ifndef _NET_IF_HDLC_H_
|
|
#define _NET_IF_HDLC_H_ 1
|
|
|
|
#define IDX_LCP 0 /* idx into state table */
|
|
|
|
struct slcp {
|
|
u_long opts; /* LCP options to send (bitfield) */
|
|
u_long magic; /* local magic number */
|
|
u_long mru; /* our max receive unit */
|
|
u_long their_mru; /* their max receive unit */
|
|
u_long protos; /* bitmask of protos that are started */
|
|
u_char echoid; /* id of last keepalive echo request */
|
|
/* restart max values, see RFC 1661 */
|
|
int timeout;
|
|
int max_terminate;
|
|
int max_configure;
|
|
int max_failure;
|
|
};
|
|
|
|
#define IDX_IPCP 1 /* idx into state table */
|
|
|
|
struct sipcp {
|
|
u_long opts; /* IPCP options to send (bitfield) */
|
|
u_int flags;
|
|
#define IPCP_HISADDR_SEEN 1 /* have seen his address already */
|
|
#define IPCP_MYADDR_DYN 2 /* my address is dynamically assigned */
|
|
};
|
|
|
|
#define IDX_COUNT (IDX_IPCP + 1) /* bump this when adding cp's! */
|
|
|
|
/*
|
|
* Don't change the order of this. Ordering the phases this way allows
|
|
* for a comparision of ``pp_phase >= PHASE_AUTHENTICATE'' in order to
|
|
* know whether LCP is up.
|
|
*/
|
|
enum ppp_phase {
|
|
PHASE_DEAD, PHASE_ESTABLISH, PHASE_TERMINATE,
|
|
PHASE_AUTHENTICATE, PHASE_NETWORK
|
|
};
|
|
|
|
struct sppp {
|
|
/* NB: pp_if _must_ be first */
|
|
struct ifnet pp_if; /* network interface data */
|
|
struct ifqueue pp_fastq; /* fast output queue */
|
|
struct ifqueue pp_cpq; /* PPP control protocol queue */
|
|
struct sppp *pp_next; /* next interface in keepalive list */
|
|
u_int pp_flags; /* use Cisco protocol instead of PPP */
|
|
u_short pp_alivecnt; /* keepalive packets counter */
|
|
u_short pp_loopcnt; /* loopback detection counter */
|
|
u_long pp_seq; /* local sequence number */
|
|
u_long pp_rseq; /* remote sequence number */
|
|
enum ppp_phase pp_phase; /* phase we're currently in */
|
|
int state[IDX_COUNT]; /* state machine */
|
|
u_char confid[IDX_COUNT]; /* id of last configuration request */
|
|
int rst_counter[IDX_COUNT]; /* restart counter */
|
|
int fail_counter[IDX_COUNT]; /* negotiation failure counter */
|
|
struct slcp lcp; /* LCP params */
|
|
struct sipcp ipcp; /* IPCP params */
|
|
/*
|
|
* These functions are filled in by sppp_attach(), and are
|
|
* expected to be used by the lower layer (hardware) drivers
|
|
* in order to communicate the (un)availability of the
|
|
* communication link. Lower layer drivers that are always
|
|
* ready to communicate (like hardware HDLC) can shortcut
|
|
* pp_up from pp_tls, and pp_down from pp_tlf.
|
|
*/
|
|
void (*pp_up)(struct sppp *sp);
|
|
void (*pp_down)(struct sppp *sp);
|
|
/*
|
|
* These functions need to be filled in by the lower layer
|
|
* (hardware) drivers if they request notification from the
|
|
* PPP layer whether the link is actually required. They
|
|
* correspond to the tls and tlf actions.
|
|
*/
|
|
void (*pp_tls)(struct sppp *sp);
|
|
void (*pp_tlf)(struct sppp *sp);
|
|
};
|
|
|
|
#define PP_KEEPALIVE 0x01 /* use keepalive protocol */
|
|
#define PP_CISCO 0x02 /* use Cisco protocol instead of PPP */
|
|
|
|
#define PP_MTU 1500 /* default/minimal MRU */
|
|
#define PP_MAX_MRU 2048 /* maximal MRU we want to negotiate */
|
|
|
|
#ifdef KERNEL
|
|
void sppp_attach (struct ifnet *ifp);
|
|
void sppp_detach (struct ifnet *ifp);
|
|
void sppp_input (struct ifnet *ifp, struct mbuf *m);
|
|
int sppp_ioctl (struct ifnet *ifp, int cmd, void *data);
|
|
struct mbuf *sppp_dequeue (struct ifnet *ifp);
|
|
int sppp_isempty (struct ifnet *ifp);
|
|
void sppp_flush (struct ifnet *ifp);
|
|
#endif
|
|
|
|
#endif /* _NET_IF_HDLC_H_ */
|