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if_sppp.h revision 1.1 
      1 /*
      2  * Defines for synchronous PPP/Cisco link level subroutines.
      3  *
      4  * Copyright (C) 1994 Cronyx Ltd.
      5  * Author: Serge Vakulenko, <vak (at) zebub.msk.su>
      6  *
      7  * This software is distributed with NO WARRANTIES, not even the implied
      8  * warranties for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
      9  *
     10  * Authors grant any other persons or organizations permission to use
     11  * or modify this software as long as this message is kept with the software,
     12  * all derivative works or modified versions.
     13  *
     14  * Version 1.7, Wed Jun  7 22:12:02 MSD 1995
     15  */
     16 
     17 #ifndef _NET_IF_HDLC_H_
     18 #define _NET_IF_HDLC_H_ 1
     19 
     20 struct slcp {
     21 	u_int16_t state;          /* state machine */
     22 	u_int32_t magic;          /* local magic number */
     23 	u_int8_t  echoid;         /* id of last keepalive echo request */
     24 	u_int8_t  confid;         /* id of last configuration request */
     25 };
     26 
     27 struct sipcp {
     28 	u_int16_t state;          /* state machine */
     29 	u_int8_t  confid;         /* id of last configuration request */
     30 };
     31 
     32 struct sppp {
     33 	struct ifnet	pp_if;		/* network interface data */
     34 	struct ifqueue	pp_fastq;	/* fast output queue */
     35 	struct sppp    *pp_next;	/* next interface in keepalive list */
     36 	u_int		pp_flags;	/* use Cisco protocol instead of PPP */
     37 	u_int16_t	pp_alivecnt;	/* keepalive packets counter */
     38 	u_int16_t	pp_loopcnt;	/* loopback detection counter */
     39 	u_int32_t	pp_seq;		/* local sequence number */
     40 	u_int32_t	pp_rseq;	/* remote sequence number */
     41 	struct slcp	lcp;		/* LCP params */
     42 	struct sipcp	ipcp;		/* IPCP params */
     43 };
     44 
     45 #define PP_KEEPALIVE    0x01    /* use keepalive protocol */
     46 #define PP_CISCO        0x02    /* use Cisco protocol instead of PPP */
     47 #define PP_TIMO         0x04    /* cp_timeout routine active */
     48 
     49 #define PP_MTU          1500    /* max. transmit unit */
     50 
     51 #define LCP_STATE_CLOSED        0       /* LCP state: closed (conf-req sent) */
     52 #define LCP_STATE_ACK_RCVD      1       /* LCP state: conf-ack received */
     53 #define LCP_STATE_ACK_SENT      2       /* LCP state: conf-ack sent */
     54 #define LCP_STATE_OPENED        3       /* LCP state: opened */
     55 
     56 #define IPCP_STATE_CLOSED       0       /* IPCP state: closed (conf-req sent) */
     57 #define IPCP_STATE_ACK_RCVD     1       /* IPCP state: conf-ack received */
     58 #define IPCP_STATE_ACK_SENT     2       /* IPCP state: conf-ack sent */
     59 #define IPCP_STATE_OPENED       3       /* IPCP state: opened */
     60 
     61 #ifdef _KERNEL
     62 void spppattach(void);
     63 void sppp_attach (struct ifnet *ifp);
     64 void sppp_detach (struct ifnet *ifp);
     65 void sppp_input (struct ifnet *ifp, struct mbuf *m);
     66 int sppp_ioctl (struct ifnet *ifp, int cmd, void *data);
     67 struct mbuf *sppp_dequeue (struct ifnet *ifp);
     68 int sppp_isempty (struct ifnet *ifp);
     69 void sppp_flush (struct ifnet *ifp);
     70 #endif
     71 
     72 #endif /* _NET_IF_HDLC_H_ */
     73