1 /* $Id: if_pppvar.h,v 1.3 1996/07/01 01:04:37 paulus Exp $ */
4 * if_pppvar.h - private structures and declarations for PPP.
6 * Copyright (c) 1994 The Australian National University.
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29 * Copyright (c) 1989 Carnegie Mellon University.
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46 * Supported network protocols. These values are used for
49 #define NP_IP 0 /* Internet Protocol */
50 #define NUM_NP 1 /* Number of NPs. */
53 * Structure describing each ppp unit.
56 struct ifnet sc_if; /* network-visible interface */
57 u_int sc_flags; /* control/status bits; see if_ppp.h */
58 void *sc_devp; /* pointer to device-dep structure */
59 void (*sc_start) __P((struct ppp_softc *)); /* start output proc */
60 void (*sc_ctlp) __P((struct ppp_softc *)); /* rcvd control pkt */
61 void (*sc_relinq) __P((struct ppp_softc *)); /* relinquish ifunit */
62 u_int16_t sc_mru; /* max receive unit */
63 pid_t sc_xfer; /* used in transferring unit */
64 struct ifqueue sc_rawq; /* received packets */
65 struct ifqueue sc_inq; /* queue of input packets for daemon */
66 struct ifqueue sc_fastq; /* interactive output packet q */
67 struct mbuf *sc_togo; /* output packet ready to go */
68 struct mbuf *sc_npqueue; /* output packets not to be sent yet */
69 struct mbuf **sc_npqtail; /* ptr to last next ptr in npqueue */
70 struct pppstat sc_stats; /* count of bytes/pkts sent/rcvd */
71 caddr_t sc_bpf; /* hook for BPF */
72 enum NPmode sc_npmode[NUM_NP]; /* what to do with each NP */
73 struct compressor *sc_xcomp; /* transmit compressor */
74 void *sc_xc_state; /* transmit compressor state */
75 struct compressor *sc_rcomp; /* receive decompressor */
76 void *sc_rc_state; /* receive decompressor state */
77 time_t sc_last_sent; /* time (secs) last NP pkt sent */
78 time_t sc_last_recv; /* time (secs) last NP pkt rcvd */
80 struct slcompress *sc_comp; /* vjc control buffer */
83 /* Device-dependent part for async lines. */
84 ext_accm sc_asyncmap; /* async control character map */
85 u_int32_t 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 u_int16_t sc_ilen; /* length of input packet so far */
91 u_int16_t sc_fcs; /* FCS so far (input) */
92 u_int16_t 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, u_long cmd, caddr_t data,
102 int flag, struct proc *p));
103 void ppp_restart __P((struct ppp_softc *sc));
104 void ppppktin __P((struct ppp_softc *sc, struct mbuf *m, int lost));
105 struct mbuf *ppp_dequeue __P((struct ppp_softc *sc));