1 /* $Id: if_pppvar.h,v 1.5 2002/12/06 09:49:16 paulus Exp $ */
4 * if_pppvar.h - private structures and declarations for PPP.
6 * Copyright (c) 1994 Paul Mackerras. All rights reserved.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in
17 * the documentation and/or other materials provided with the
20 * 3. The name(s) of the authors of this software must not be used to
21 * endorse or promote products derived from this software without
22 * prior written permission.
24 * 4. Redistributions of any form whatsoever must retain the following
26 * "This product includes software developed by Paul Mackerras
27 * <paulus@samba.org>".
29 * THE AUTHORS OF THIS SOFTWARE DISCLAIM ALL WARRANTIES WITH REGARD TO
30 * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
31 * AND FITNESS, IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY
32 * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
33 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
34 * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
35 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
37 * Copyright (c) 1989 Carnegie Mellon University.
38 * All rights reserved.
40 * Redistribution and use in source and binary forms are permitted
41 * provided that the above copyright notice and this paragraph are
42 * duplicated in all such forms and that any documentation,
43 * advertising materials, and other materials related to such
44 * distribution and use acknowledge that the software was developed
45 * by Carnegie Mellon University. The name of the
46 * University may not be used to endorse or promote products derived
47 * from this software without specific prior written permission.
48 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
49 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
50 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
54 * Supported network protocols. These values are used for
57 #define NP_IP 0 /* Internet Protocol */
58 #define NUM_NP 1 /* Number of NPs. */
61 * Structure describing each ppp unit.
64 struct ifnet sc_if; /* network-visible interface */
65 u_int sc_flags; /* control/status bits; see if_ppp.h */
66 void *sc_devp; /* pointer to device-dep structure */
67 void (*sc_start) __P((struct ppp_softc *)); /* start output proc */
68 void (*sc_ctlp) __P((struct ppp_softc *)); /* rcvd control pkt */
69 void (*sc_relinq) __P((struct ppp_softc *)); /* relinquish ifunit */
70 u_int16_t sc_mru; /* max receive unit */
71 pid_t sc_xfer; /* used in transferring unit */
72 struct ifqueue sc_rawq; /* received packets */
73 struct ifqueue sc_inq; /* queue of input packets for daemon */
74 struct ifqueue sc_fastq; /* interactive output packet q */
75 struct mbuf *sc_togo; /* output packet ready to go */
76 struct mbuf *sc_npqueue; /* output packets not to be sent yet */
77 struct mbuf **sc_npqtail; /* ptr to last next ptr in npqueue */
78 struct pppstat sc_stats; /* count of bytes/pkts sent/rcvd */
79 caddr_t sc_bpf; /* hook for BPF */
80 enum NPmode sc_npmode[NUM_NP]; /* what to do with each NP */
81 struct compressor *sc_xcomp; /* transmit compressor */
82 void *sc_xc_state; /* transmit compressor state */
83 struct compressor *sc_rcomp; /* receive decompressor */
84 void *sc_rc_state; /* receive decompressor state */
85 time_t sc_last_sent; /* time (secs) last NP pkt sent */
86 time_t sc_last_recv; /* time (secs) last NP pkt rcvd */
88 struct bpf_program sc_pass_filt; /* filter for packets to pass */
89 struct bpf_program sc_active_filt; /* filter for "non-idle" packets */
90 #endif /* PPP_FILTER */
92 struct slcompress *sc_comp; /* vjc control buffer */
95 /* Device-dependent part for async lines. */
96 ext_accm sc_asyncmap; /* async control character map */
97 u_int32_t sc_rasyncmap; /* receive async control char map */
98 struct mbuf *sc_outm; /* mbuf chain currently being output */
99 struct mbuf *sc_m; /* pointer to input mbuf chain */
100 struct mbuf *sc_mc; /* pointer to current input mbuf */
101 char *sc_mp; /* ptr to next char in input mbuf */
102 u_int16_t sc_ilen; /* length of input packet so far */
103 u_int16_t sc_fcs; /* FCS so far (input) */
104 u_int16_t sc_outfcs; /* FCS so far for output packet */
105 u_char sc_rawin[16]; /* chars as received */
106 int sc_rawin_count; /* # in sc_rawin */
110 struct ppp_softc ppp_softc[NPPP];
112 struct ppp_softc *pppalloc __P((pid_t pid));
113 void pppdealloc __P((struct ppp_softc *sc));
114 int pppioctl __P((struct ppp_softc *sc, u_long cmd, caddr_t data,
115 int flag, struct proc *p));
116 void ppp_restart __P((struct ppp_softc *sc));
117 void ppppktin __P((struct ppp_softc *sc, struct mbuf *m, int lost));
118 struct mbuf *ppp_dequeue __P((struct ppp_softc *sc));
119 int pppoutput __P((struct ifnet *, struct mbuf *,
120 struct sockaddr *, struct rtentry *));