FreeBSD/Linux Kernel Cross Reference
sys/net/if_pppvar.h
1 /*
2 * if_pppvar.h - private structures and declarations for PPP.
3 *
4 * Copyright (c) 1994 The Australian National University.
5 * All rights reserved.
6 *
7 * Permission to use, copy, modify, and distribute this software and its
8 * documentation is hereby granted, provided that the above copyright
9 * notice appears in all copies. This software is provided without any
10 * warranty, express or implied. The Australian National University
11 * makes no representations about the suitability of this software for
12 * any purpose.
13 *
14 * IN NO EVENT SHALL THE AUSTRALIAN NATIONAL UNIVERSITY BE LIABLE TO ANY
15 * PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
16 * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF
17 * THE AUSTRALIAN NATIONAL UNIVERSITY HAVE BEEN ADVISED OF THE POSSIBILITY
18 * OF SUCH DAMAGE.
19 *
20 * THE AUSTRALIAN NATIONAL UNIVERSITY SPECIFICALLY DISCLAIMS ANY WARRANTIES,
21 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
22 * AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
23 * ON AN "AS IS" BASIS, AND THE AUSTRALIAN NATIONAL UNIVERSITY HAS NO
24 * OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS,
25 * OR MODIFICATIONS.
26 *
27 * Copyright (c) 1989 Carnegie Mellon University.
28 * All rights reserved.
29 *
30 * Redistribution and use in source and binary forms are permitted
31 * provided that the above copyright notice and this paragraph are
32 * duplicated in all such forms and that any documentation,
33 * advertising materials, and other materials related to such
34 * distribution and use acknowledge that the software was developed
35 * by Carnegie Mellon University. The name of the
36 * University may not be used to endorse or promote products derived
37 * from this software without specific prior written permission.
38 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
39 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
40 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
41 *
42 * $FreeBSD: src/sys/net/if_pppvar.h,v 1.5.2.2 1999/09/05 08:17:45 peter Exp $
43 */
44
45 /*
46 * Supported network protocols. These values are used for
47 * indexing sc_npmode.
48 */
49 #define NP_IP 0 /* Internet Protocol */
50 #define NUM_NP 1 /* Number of NPs. */
51
52 /*
53 * Structure describing each ppp unit.
54 */
55 struct ppp_softc {
56 struct ifnet sc_if; /* network-visible interface */
57 /*hi*/ 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 void (*sc_setmtu) __P((struct ppp_softc *)); /* set mtu */
63 short sc_mru; /* max receive unit */
64 pid_t sc_xfer; /* used in transferring unit */
65 /*hi*/ struct ifqueue sc_rawq; /* received packets */
66 /*net*/ struct ifqueue sc_inq; /* queue of input packets for daemon */
67 /*net*/ struct ifqueue sc_fastq; /* interactive output packet q */
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 enum NPmode sc_npmode[NUM_NP]; /* what to do with each NP */
72 struct compressor *sc_xcomp; /* transmit compressor */
73 void *sc_xc_state; /* transmit compressor state */
74 struct compressor *sc_rcomp; /* receive decompressor */
75 void *sc_rc_state; /* receive decompressor state */
76 time_t sc_last_sent; /* time (secs) last NP pkt sent */
77 time_t sc_last_recv; /* time (secs) last NP pkt rcvd */
78 #ifdef PPP_FILTER
79 struct bpf_program sc_pass_filt; /* filter for packets to pass */
80 struct bpf_program sc_active_filt; /* filter for "non-idle" packets */
81 #endif /* PPP_FILTER */
82 #ifdef VJC
83 struct slcompress *sc_comp; /* vjc control buffer */
84 #endif
85
86 /* Device-dependent part for async lines. */
87 ext_accm sc_asyncmap; /* async control character map */
88 u_long sc_rasyncmap; /* receive async control char map */
89 struct mbuf *sc_outm; /* mbuf chain currently being output */
90 struct mbuf *sc_m; /* pointer to input mbuf chain */
91 struct mbuf *sc_mc; /* pointer to current input mbuf */
92 char *sc_mp; /* ptr to next char in input mbuf */
93 short sc_ilen; /* length of input packet so far */
94 u_short sc_fcs; /* FCS so far (input) */
95 u_short sc_outfcs; /* FCS so far for output packet */
96 u_char sc_rawin[16]; /* chars as received */
97 int sc_rawin_count; /* # in sc_rawin */
98 };
99
100 extern struct ppp_softc ppp_softc[NPPP];
101
102 struct ppp_softc *pppalloc __P((pid_t pid));
103 void pppdealloc __P((struct ppp_softc *sc));
104 int pppioctl __P((struct ppp_softc *sc, u_long cmd, caddr_t data,
105 int flag, struct proc *p));
106 int pppoutput __P((struct ifnet *ifp, struct mbuf *m0,
107 struct sockaddr *dst, struct rtentry *rtp));
108 void ppp_restart __P((struct ppp_softc *sc));
109 void ppppktin __P((struct ppp_softc *sc, struct mbuf *m, int lost));
110 struct mbuf *ppp_dequeue __P((struct ppp_softc *sc));
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