2 * if_pppvar.h - private structures and declarations for PPP.
5 * Copyright (c) 1994 The Australian National University.
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28 * Copyright (c) 1989 Carnegie Mellon University.
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47 * Supported network protocols. These values are used for
50 #define NP_IP 0 /* Internet Protocol */
51 #define NP_IPV6 1 /* Internet Protocol version 6 */
52 #define NUM_NP 2 /* Number of NPs. */
55 * Structure describing each ppp unit.
58 struct ifnet *sc_ifp; /* network-visible interface */
59 /*hi*/ u_int sc_flags; /* control/status bits; see if_ppp.h */
60 struct callout sc_timo_ch; /* Used for scheduling timeouts */
61 void *sc_devp; /* pointer to device-dep structure */
62 void (*sc_start)(struct ppp_softc *); /* start output proc */
63 void (*sc_ctlp)(struct ppp_softc *); /* rcvd control pkt */
64 void (*sc_relinq)(struct ppp_softc *); /* relinquish ifunit */
65 void (*sc_setmtu)(struct ppp_softc *); /* set mtu */
66 short sc_mru; /* max receive unit */
67 pid_t sc_xfer; /* used in transferring unit */
68 /*hi*/ struct ifqueue sc_rawq; /* received packets */
69 /*net*/ struct ifqueue sc_inq; /* queue of input packets for daemon */
70 /*net*/ struct ifqueue sc_fastq; /* interactive output packet q */
71 struct mbuf *sc_npqueue; /* output packets not to be sent yet */
72 struct mbuf **sc_npqtail; /* ptr to last next ptr in npqueue */
73 struct pppstat sc_stats; /* count of bytes/pkts sent/rcvd */
74 enum NPmode sc_npmode[NUM_NP]; /* what to do with each NP */
75 struct compressor *sc_xcomp; /* transmit compressor */
76 void *sc_xc_state; /* transmit compressor state */
77 struct compressor *sc_rcomp; /* receive decompressor */
78 void *sc_rc_state; /* receive decompressor state */
79 time_t sc_last_sent; /* time (secs) last NP pkt sent */
80 time_t sc_last_recv; /* time (secs) last NP pkt rcvd */
82 struct bpf_program sc_pass_filt; /* filter for packets to pass */
83 struct bpf_program sc_active_filt; /* filter for "non-idle" packets */
84 #endif /* PPP_FILTER */
86 struct slcompress *sc_comp; /* vjc control buffer */
89 /* Device-dependent part for async lines. */
90 ext_accm sc_asyncmap; /* async control character map */
91 u_long sc_rasyncmap; /* receive async control char map */
92 struct mbuf *sc_outm; /* mbuf chain currently being output */
93 struct mbuf *sc_m; /* pointer to input mbuf chain */
94 struct mbuf *sc_mc; /* pointer to current input mbuf */
95 char *sc_mp; /* ptr to next char in input mbuf */
96 short sc_ilen; /* length of input packet so far */
97 u_short sc_fcs; /* FCS so far (input) */
98 u_short sc_outfcs; /* FCS so far for output packet */
99 u_char sc_rawin[16]; /* chars as received */
100 int sc_rawin_count; /* # in sc_rawin */
101 LIST_ENTRY(ppp_softc) sc_list;
103 #define PPP2IFP(sc) ((sc)->sc_ifp)
105 struct ppp_softc *pppalloc(pid_t pid);
106 void pppdealloc(struct ppp_softc *sc);
107 int pppioctl(struct ppp_softc *sc, u_long cmd, caddr_t data, int flag,
109 int pppoutput(struct ifnet *ifp, struct mbuf *m0, struct sockaddr *dst,
110 struct rtentry *rtp);
111 void ppp_restart(struct ppp_softc *sc);
112 void ppppktin(struct ppp_softc *sc, struct mbuf *m, int lost);
113 struct mbuf *ppp_dequeue(struct ppp_softc *sc);