if_sppp.h revision 4911 
1/*
2 * Defines for synchronous PPP/Cisco link level subroutines.
3 *
4 * Copyright (C) 1994 Cronyx Ltd.
5 * Author: Serge Vakulenko, <vak@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 organisations 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 1.1, Thu Oct 27 21:15:02 MSK 1994
15 */
16
17#ifndef _NET_IF_HDLC_H_
18#define _NET_IF_HDLC_H_ 1
19
20struct slcp {
21	u_short state;          /* state machine */
22	u_long  magic;          /* local magic number */
23	u_long  rmagic;         /* remote magic number */
24	u_char  lastid;         /* id of last keepalive echo request */
25};
26
27struct sipcp {
28	u_short state;          /* state machine */
29};
30
31struct sppp {
32	struct  ifnet pp_if;    /* network interface data */
33	struct  ifqueue pp_fastq; /* fast output queue */
34	struct  sppp *pp_next;  /* next interface in keepalive list */
35	u_int   pp_flags;       /* use Cisco protocol instead of PPP */
36	u_short pp_alivecnt;    /* keepalive packets counter */
37	u_short pp_loopcnt;     /* loopback detection counter */
38	u_long  pp_seq;         /* local sequence number */
39	u_long  pp_rseq;        /* remote sequence number */
40	struct slcp lcp;        /* LCP params */
41	struct sipcp ipcp;      /* IPCP params */
42};
43
44#define PP_KEEPALIVE    0x01    /* use keepalive protocol */
45#define PP_CISCO        0x02    /* use Cisco protocol instead of PPP */
46
47#define PP_MTU          1500    /* max. transmit unit */
48
49#define LCP_STATE_CLOSED        0       /* LCP state: closed (conf-req sent) */
50#define LCP_STATE_ACK_RCVD      1       /* LCP state: conf-ack received */
51#define LCP_STATE_ACK_SENT      2       /* LCP state: conf-ack sent */
52#define LCP_STATE_OPENED        3       /* LCP state: opened */
53
54#define IPCP_STATE_CLOSED       0       /* IPCP state: closed (conf-req sent) */
55#define IPCP_STATE_ACK_RCVD     1       /* IPCP state: conf-ack received */
56#define IPCP_STATE_ACK_SENT     2       /* IPCP state: conf-ack sent */
57#define IPCP_STATE_OPENED       3       /* IPCP state: opened */
58
59#ifdef KERNEL
60void sppp_attach (struct ifnet *ifp);
61void sppp_detach (struct ifnet *ifp);
62void sppp_input (struct ifnet *ifp, struct mbuf *m);
63int sppp_output (struct ifnet *ifp, struct mbuf *m, struct sockaddr *dst,
64	struct rtentry *rt);
65int sppp_ioctl (struct ifnet *ifp, int cmd, caddr_t data);
66struct mbuf *sppp_dequeue (struct ifnet *ifp);
67void sppp_flush (struct ifnet *ifp);
68#endif
69
70#endif /* _NET_IF_HDLC_H_ */
71