1/* $NetBSD: if_pppvar.h,v 1.28 2016/04/28 00:16:56 ozaki-r Exp $ */
2/* Id: if_pppvar.h,v 1.3 1996/07/01 01:04:37 paulus Exp */
3
4/*
5 * if_pppvar.h - private structures and declarations for PPP.
6 *
7 * Copyright (c) 1989-2002 Paul Mackerras. All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 *
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 *
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in
18 * the documentation and/or other materials provided with the
19 * distribution.
20 *
21 * 3. The name(s) of the authors of this software must not be used to
22 * endorse or promote products derived from this software without
23 * prior written permission.
24 *
25 * 4. Redistributions of any form whatsoever must retain the following
26 * acknowledgment:
27 * "This product includes software developed by Paul Mackerras
28 * <paulus@samba.org>".
29 *
30 * THE AUTHORS OF THIS SOFTWARE DISCLAIM ALL WARRANTIES WITH REGARD TO
31 * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
32 * AND FITNESS, IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY
33 * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
34 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
35 * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
36 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
37 *
38 * Copyright (c) 1984-2000 Carnegie Mellon University. All rights reserved.
39 *
40 * Redistribution and use in source and binary forms, with or without
41 * modification, are permitted provided that the following conditions
42 * are met:
43 *
44 * 1. Redistributions of source code must retain the above copyright
45 * notice, this list of conditions and the following disclaimer.
46 *
47 * 2. Redistributions in binary form must reproduce the above copyright
48 * notice, this list of conditions and the following disclaimer in
49 * the documentation and/or other materials provided with the
50 * distribution.
51 *
52 * 3. The name "Carnegie Mellon University" must not be used to
53 * endorse or promote products derived from this software without
54 * prior written permission. For permission or any legal
55 * details, please contact
56 * Office of Technology Transfer
57 * Carnegie Mellon University
58 * 5000 Forbes Avenue
59 * Pittsburgh, PA 15213-3890
60 * (412) 268-4387, fax: (412) 268-7395
61 * tech-transfer@andrew.cmu.edu
62 *
63 * 4. Redistributions of any form whatsoever must retain the following
64 * acknowledgment:
65 * "This product includes software developed by Computing Services
66 * at Carnegie Mellon University (http://www.cmu.edu/computing/)."
67 *
68 * CARNEGIE MELLON UNIVERSITY DISCLAIMS ALL WARRANTIES WITH REGARD TO
69 * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
70 * AND FITNESS, IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY BE LIABLE
71 * FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
72 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
73 * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
74 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
75 */
76
77#ifndef _NET_IF_PPPVAR_H_
78#define _NET_IF_PPPVAR_H_
79
80#include <sys/callout.h>
81
82/*
83 * Supported network protocols. These values are used for
84 * indexing sc_npmode.
85 */
86#define NP_IP 0 /* Internet Protocol */
87#define NP_IPV6 1 /* Internet Protocol version 6 */
88#define NUM_NP 2 /* Number of NPs. */
89
90/*
91 * Structure describing each ppp unit.
92 */
93struct ppp_softc {
94 struct ifnet sc_if; /* network-visible interface */
95 int sc_unit; /* XXX unit number */
96 u_int sc_flags; /* control/status bits; see if_ppp.h */
97 void *sc_devp; /* pointer to device-dep structure */
98 void (*sc_start)(struct ppp_softc *); /* start output proc */
99 void (*sc_ctlp)(struct ppp_softc *); /* rcvd control pkt */
100 void (*sc_relinq)(struct ppp_softc *); /* relinquish ifunit */
101 struct callout sc_timo_ch; /* timeout callout */
102 uint16_t sc_mru; /* max receive unit */
103 pid_t sc_xfer; /* used in transferring unit */
104 struct ifqueue sc_rawq; /* received packets */
105 struct ifqueue sc_inq; /* queue of input packets for daemon */
106 struct ifqueue sc_fastq; /* interactive output packet q */
107 struct mbuf *sc_togo; /* output packet ready to go */
108 struct mbuf *sc_npqueue; /* output packets not to be sent yet */
109 struct mbuf **sc_npqtail; /* ptr to last next ptr in npqueue */
110 struct pppstat sc_stats; /* count of bytes/pkts sent/rcvd */
111 enum NPmode sc_npmode[NUM_NP]; /* what to do with each NP */
112 struct compressor *sc_xcomp; /* transmit compressor */
113 void *sc_xc_state; /* transmit compressor state */
114 struct compressor *sc_rcomp; /* receive decompressor */
115 void *sc_rc_state; /* receive decompressor state */
116 time_t sc_last_sent; /* time (secs) last NP pkt sent */
117 time_t sc_last_recv; /* time (secs) last NP pkt rcvd */
118 void *sc_si; /* software interrupt handle */
119#ifdef PPP_FILTER
120 /* Filter for packets to pass. */
121 struct bpf_program sc_pass_filt_in;
122 struct bpf_program sc_pass_filt_out;
123
124 /* Filter for "non-idle" packets. */
125 struct bpf_program sc_active_filt_in;
126 struct bpf_program sc_active_filt_out;
127#endif /* PPP_FILTER */
128#ifdef VJC
129 struct slcompress *sc_comp; /* vjc control buffer */
130#endif
131
132 /* Device-dependent part for async lines. */
133 ext_accm sc_asyncmap; /* async control character map */
134 uint32_t sc_rasyncmap; /* receive async control char map */
135 struct mbuf *sc_outm; /* mbuf chain currently being output */
136 struct mbuf *sc_m; /* pointer to input mbuf chain */
137 struct mbuf *sc_mc; /* pointer to current input mbuf */
138 char *sc_mp; /* ptr to next char in input mbuf */
139 uint16_t sc_ilen; /* length of input packet so far */
140 uint16_t sc_fcs; /* FCS so far (input) */
141 uint16_t sc_outfcs; /* FCS so far for output packet */
142 uint16_t sc_maxfastq; /* Maximum number of packets that
143 * can be received back-to-back in
144 * the high priority queue */
145 uint8_t sc_nfastq; /* Number of packets received
146 * back-to-back in the high priority
147 * queue */
148 u_char sc_rawin_start; /* current char start */
149 struct ppp_rawin sc_rawin; /* chars as received */
150 LIST_ENTRY(ppp_softc) sc_iflist;
151};
152
153#ifdef _KERNEL
154
155struct ppp_softc *pppalloc(pid_t);
156void pppdealloc(struct ppp_softc *);
157int pppioctl(struct ppp_softc *, u_long, void *, int, struct lwp *);
158void ppp_restart(struct ppp_softc *);
159void ppppktin(struct ppp_softc *, struct mbuf *, int);
160struct mbuf *ppp_dequeue(struct ppp_softc *);
161int pppoutput(struct ifnet *, struct mbuf *, const struct sockaddr *,
162 const struct rtentry *);
163#endif /* _KERNEL */
164
165#endif /* !_NET_IF_PPPVAR_H_ */
166