1 /* $Id: if_pppvar.h,v 1.3 1994/12/13 03:26:08 paulus Exp $ */
3 * if_pppvar.h - private structures and declarations for PPP.
5 * Copyright (c) 1994 The Australian National University.
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9 * documentation is hereby granted, provided that the above copyright
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28 * Copyright (c) 1989 Carnegie Mellon University.
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32 * provided that the above copyright notice and this paragraph are
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45 * Supported network protocols. These values are used for
48 #define NP_IP 0 /* Internet Protocol */
49 #define NUM_NP 1 /* Number of NPs. */
52 * Structure describing each ppp unit.
55 struct ifnet sc_if; /* network-visible interface */
56 u_int sc_flags; /* control/status bits; see if_ppp.h */
57 void *sc_devp; /* pointer to device-dep structure */
58 void (*sc_start) __P((struct ppp_softc *)); /* start output proc */
59 void (*sc_ctlp) __P((struct ppp_softc *)); /* rcvd control pkt */
60 void (*sc_relinq) __P((struct ppp_softc *)); /* relinquish ifunit */
61 short sc_mru; /* max receive unit */
62 pid_t sc_xfer; /* used in transferring unit */
63 struct ifqueue sc_rawq; /* received packets */
64 struct ifqueue sc_inq; /* queue of input packets for daemon */
65 struct ifqueue sc_fastq; /* interactive output packet q */
66 struct mbuf *sc_togo; /* output packet ready to go */
67 struct mbuf *sc_npqueue; /* output packets not to be sent yet */
68 struct mbuf **sc_npqtail; /* ptr to last next ptr in npqueue */
70 struct slcompress sc_comp; /* vjc control buffer */
72 u_int sc_bytessent; /* count of octets sent */
73 u_int sc_bytesrcvd; /* count of octets received */
74 caddr_t sc_bpf; /* hook for BPF */
75 enum NPmode sc_npmode[NUM_NP]; /* what to do with each NP */
76 struct compressor *sc_xcomp; /* transmit compressor */
77 void *sc_xc_state; /* transmit compressor state */
78 struct compressor *sc_rcomp; /* receive decompressor */
79 void *sc_rc_state; /* receive decompressor state */
80 int sc_last_sent; /* time (secs) last NP pkt sent */
81 int sc_last_recv; /* time (secs) last NP pkt rcvd */
83 /* Device-dependent part for async lines. */
84 ext_accm sc_asyncmap; /* async control character map */
85 u_long sc_rasyncmap; /* receive async control char map */
86 struct mbuf *sc_outm; /* mbuf chain currently being output */
87 struct mbuf *sc_m; /* pointer to input mbuf chain */
88 struct mbuf *sc_mc; /* pointer to current input mbuf */
89 char *sc_mp; /* ptr to next char in input mbuf */
90 short sc_ilen; /* length of input packet so far */
91 u_short sc_fcs; /* FCS so far (input) */
92 u_short sc_outfcs; /* FCS so far for output packet */
93 u_char sc_rawin[16]; /* chars as received */
94 int sc_rawin_count; /* # in sc_rawin */
97 struct ppp_softc ppp_softc[NPPP];
99 struct ppp_softc *pppalloc __P((pid_t pid));
100 void pppdealloc __P((struct ppp_softc *sc));
101 int pppioctl __P((struct ppp_softc *sc, int cmd, caddr_t data,
102 int flag, struct proc *p));
103 void ppppktin __P((struct ppp_softc *sc, struct mbuf *m, int lost));
104 struct mbuf *ppp_dequeue __P((struct ppp_softc *sc));