1 /* $Id: if_pppvar.h,v 1.7 2002/12/06 09:49:16 paulus Exp $ */
3 * if_pppvar.h - private structures and declarations for PPP.
5 * Copyright (c) 1994 Paul Mackerras. All rights reserved.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in
16 * the documentation and/or other materials provided with the
19 * 3. The name(s) of the authors of this software must not be used to
20 * endorse or promote products derived from this software without
21 * prior written permission.
23 * 4. Redistributions of any form whatsoever must retain the following
25 * "This product includes software developed by Paul Mackerras
26 * <paulus@samba.org>".
28 * THE AUTHORS OF THIS SOFTWARE DISCLAIM ALL WARRANTIES WITH REGARD TO
29 * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
30 * AND FITNESS, IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY
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32 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
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34 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
36 * Copyright (c) 1989 Carnegie Mellon University.
37 * All rights reserved.
39 * Redistribution and use in source and binary forms are permitted
40 * provided that the above copyright notice and this paragraph are
41 * duplicated in all such forms and that any documentation,
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43 * distribution and use acknowledge that the software was developed
44 * by Carnegie Mellon University. The name of the
45 * University may not be used to endorse or promote products derived
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47 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
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49 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
53 * Supported network protocols. These values are used for
56 #define NP_IP 0 /* Internet Protocol */
57 #define NUM_NP 1 /* Number of NPs. */
60 * Structure describing each ppp unit.
63 struct ifnet sc_if; /* network-visible interface */
64 u_int sc_flags; /* control/status bits; see if_ppp.h */
65 void *sc_devp; /* pointer to device-dep structure */
66 void (*sc_start) __P((struct ppp_softc *)); /* start output proc */
67 void (*sc_ctlp) __P((struct ppp_softc *)); /* rcvd control pkt */
68 void (*sc_relinq) __P((struct ppp_softc *)); /* relinquish ifunit */
69 short sc_mru; /* max receive unit */
70 pid_t sc_xfer; /* used in transferring unit */
71 struct ifqueue sc_rawq; /* received packets */
72 struct ifqueue sc_inq; /* queue of input packets for daemon */
73 struct ifqueue sc_fastq; /* interactive output packet q */
74 struct mbuf *sc_togo; /* output packet ready to go */
75 struct mbuf *sc_npqueue; /* output packets not to be sent yet */
76 struct mbuf **sc_npqtail; /* ptr to last next ptr in npqueue */
77 struct pppstat sc_stats; /* count of bytes/pkts sent/rcvd */
78 caddr_t sc_bpf; /* hook for BPF */
79 enum NPmode sc_npmode[NUM_NP]; /* what to do with each NP */
80 struct compressor *sc_xcomp; /* transmit compressor */
81 void *sc_xc_state; /* transmit compressor state */
82 struct compressor *sc_rcomp; /* receive decompressor */
83 void *sc_rc_state; /* receive decompressor state */
84 time_t sc_last_sent; /* time (secs) last NP pkt sent */
85 time_t sc_last_recv; /* time (secs) last NP pkt rcvd */
87 struct slcompress *sc_comp; /* vjc control buffer */
90 /* Device-dependent part for async lines. */
91 ext_accm sc_asyncmap; /* async control character map */
92 u_long sc_rasyncmap; /* receive async control char map */
93 struct mbuf *sc_outm; /* mbuf chain currently being output */
94 struct mbuf *sc_m; /* pointer to input mbuf chain */
95 struct mbuf *sc_mc; /* pointer to current input mbuf */
96 char *sc_mp; /* ptr to next char in input mbuf */
97 short sc_ilen; /* length of input packet so far */
98 u_short sc_fcs; /* FCS so far (input) */
99 u_short sc_outfcs; /* FCS so far for output packet */
100 u_char sc_rawin[16]; /* chars as received */
101 int sc_rawin_count; /* # in sc_rawin */
104 struct ppp_softc ppp_softc[NPPP];
106 struct ppp_softc *pppalloc(pid_t pid);
107 void pppdealloc(struct ppp_softc *sc);
108 int pppoutput(struct ifnet *, struct mbuf *, struct sockaddr *);
109 int pppioctl(struct ppp_softc *sc, int cmd, caddr_t data, int flag);
110 void ppp_restart(struct ppp_softc *sc);
111 void ppppktin(struct ppp_softc *sc, struct mbuf *m, int lost);
112 struct mbuf *ppp_dequeue(struct ppp_softc *sc);