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1.1 root 1: /*
2: * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
3: *
4: * @APPLE_LICENSE_HEADER_START@
5: *
6: * The contents of this file constitute Original Code as defined in and
7: * are subject to the Apple Public Source License Version 1.1 (the
8: * "License"). You may not use this file except in compliance with the
9: * License. Please obtain a copy of the License at
10: * http://www.apple.com/publicsource and read it before using this file.
11: *
12: * This Original Code and all software distributed under the License are
13: * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
14: * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
15: * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
16: * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
17: * License for the specific language governing rights and limitations
18: * under the License.
19: *
20: * @APPLE_LICENSE_HEADER_END@
21: */
22: /*
23: * if_pppvar.h - private structures and declarations for PPP.
24: *
25: * Copyright (c) 1994 The Australian National University.
26: * All rights reserved.
27: *
28: * Permission to use, copy, modify, and distribute this software and its
29: * documentation is hereby granted, provided that the above copyright
30: * notice appears in all copies. This software is provided without any
31: * warranty, express or implied. The Australian National University
32: * makes no representations about the suitability of this software for
33: * any purpose.
34: *
35: * IN NO EVENT SHALL THE AUSTRALIAN NATIONAL UNIVERSITY BE LIABLE TO ANY
36: * PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
37: * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF
38: * THE AUSTRALIAN NATIONAL UNIVERSITY HAVE BEEN ADVISED OF THE POSSIBILITY
39: * OF SUCH DAMAGE.
40: *
41: * THE AUSTRALIAN NATIONAL UNIVERSITY SPECIFICALLY DISCLAIMS ANY WARRANTIES,
42: * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
43: * AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
44: * ON AN "AS IS" BASIS, AND THE AUSTRALIAN NATIONAL UNIVERSITY HAS NO
45: * OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS,
46: * OR MODIFICATIONS.
47: *
48: * Copyright (c) 1989 Carnegie Mellon University.
49: * All rights reserved.
50: *
51: * Redistribution and use in source and binary forms are permitted
52: * provided that the above copyright notice and this paragraph are
53: * duplicated in all such forms and that any documentation,
54: * advertising materials, and other materials related to such
55: * distribution and use acknowledge that the software was developed
56: * by Carnegie Mellon University. The name of the
57: * University may not be used to endorse or promote products derived
58: * from this software without specific prior written permission.
59: * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
60: * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
61: * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
62: *
63: */
64:
65: /*
66: * Supported network protocols. These values are used for
67: * indexing sc_npmode.
68: */
69: #define NP_IP 0 /* Internet Protocol */
70: #define NUM_NP 1 /* Number of NPs. */
71:
72: /*
73: * Structure describing each ppp unit.
74: */
75: struct ppp_softc {
76: struct ifnet sc_if; /* network-visible interface */
77: /*hi*/ u_int sc_flags; /* control/status bits; see if_ppp.h */
78: struct callout_handle sc_ch; /* Used for scheduling timeouts */
79: void *sc_devp; /* pointer to device-dep structure */
80: void (*sc_start) __P((struct ppp_softc *)); /* start output proc */
81: void (*sc_ctlp) __P((struct ppp_softc *)); /* rcvd control pkt */
82: void (*sc_relinq) __P((struct ppp_softc *)); /* relinquish ifunit */
83: void (*sc_setmtu) __P((struct ppp_softc *)); /* set mtu */
84: short sc_mru; /* max receive unit */
85: pid_t sc_xfer; /* used in transferring unit */
86: /*hi*/ struct ifqueue sc_rawq; /* received packets */
87: /*net*/ struct ifqueue sc_inq; /* queue of input packets for daemon */
88: /*net*/ struct ifqueue sc_fastq; /* interactive output packet q */
89: struct mbuf *sc_npqueue; /* output packets not to be sent yet */
90: struct mbuf **sc_npqtail; /* ptr to last next ptr in npqueue */
91: struct pppstat sc_stats; /* count of bytes/pkts sent/rcvd */
92: enum NPmode sc_npmode[NUM_NP]; /* what to do with each NP */
93: struct compressor *sc_xcomp; /* transmit compressor */
94: void *sc_xc_state; /* transmit compressor state */
95: struct compressor *sc_rcomp; /* receive decompressor */
96: void *sc_rc_state; /* receive decompressor state */
97: time_t sc_last_sent; /* time (secs) last NP pkt sent */
98: time_t sc_last_recv; /* time (secs) last NP pkt rcvd */
99: #if PPP_FILTER
100: struct bpf_program sc_pass_filt; /* filter for packets to pass */
101: struct bpf_program sc_active_filt; /* filter for "non-idle" packets */
102: #endif /* PPP_FILTER */
103: #if VJC
104: struct slcompress *sc_comp; /* vjc control buffer */
105: #endif
106:
107: /* Device-dependent part for async lines. */
108: ext_accm sc_asyncmap; /* async control character map */
109: u_long sc_rasyncmap; /* receive async control char map */
110: struct mbuf *sc_outm; /* mbuf chain currently being output */
111: struct mbuf *sc_m; /* pointer to input mbuf chain */
112: struct mbuf *sc_mc; /* pointer to current input mbuf */
113: char *sc_mp; /* ptr to next char in input mbuf */
114: short sc_ilen; /* length of input packet so far */
115: u_short sc_fcs; /* FCS so far (input) */
116: u_short sc_outfcs; /* FCS so far for output packet */
117: u_char sc_rawin[16]; /* chars as received */
118: int sc_rawin_count; /* # in sc_rawin */
119: };
120:
121: extern struct ppp_softc ppp_softc[NPPP];
122:
123: struct ppp_softc *pppalloc __P((pid_t pid));
124: void pppdealloc __P((struct ppp_softc *sc));
125: int pppioctl __P((struct ppp_softc *sc, u_long cmd, caddr_t data,
126: int flag, struct proc *p));
127: int pppoutput __P((struct ifnet *ifp, struct mbuf *m0,
128: struct sockaddr *dst, struct rtentry *rtp));
129: void ppp_restart __P((struct ppp_softc *sc));
130: void ppppktin __P((struct ppp_softc *sc, struct mbuf *m, int lost));
131: struct mbuf *ppp_dequeue __P((struct ppp_softc *sc));
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