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