FreeBSD/Linux Kernel Cross Reference
sys/net/if_pppvar.h
1 /*
2 * if_pppvar.h - private structures and declarations for PPP.
3 */
4 /*-
5 * Copyright (c) 1994 The Australian National University.
6 * All rights reserved.
7 *
8 * Permission to use, copy, modify, and distribute this software and its
9 * documentation is hereby granted, provided that the above copyright
10 * notice appears in all copies. This software is provided without any
11 * warranty, express or implied. The Australian National University
12 * makes no representations about the suitability of this software for
13 * any purpose.
14 *
15 * IN NO EVENT SHALL THE AUSTRALIAN NATIONAL UNIVERSITY BE LIABLE TO ANY
16 * PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
17 * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF
18 * THE AUSTRALIAN NATIONAL UNIVERSITY HAVE BEEN ADVISED OF THE POSSIBILITY
19 * OF SUCH DAMAGE.
20 *
21 * THE AUSTRALIAN NATIONAL UNIVERSITY SPECIFICALLY DISCLAIMS ANY WARRANTIES,
22 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
23 * AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
24 * ON AN "AS IS" BASIS, AND THE AUSTRALIAN NATIONAL UNIVERSITY HAS NO
25 * OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS,
26 * OR MODIFICATIONS.
27 *
28 * Copyright (c) 1989 Carnegie Mellon University.
29 * All rights reserved.
30 *
31 * Redistribution and use in source and binary forms are permitted
32 * provided that the above copyright notice and this paragraph are
33 * duplicated in all such forms and that any documentation,
34 * advertising materials, and other materials related to such
35 * distribution and use acknowledge that the software was developed
36 * by Carnegie Mellon University. The name of the
37 * University may not be used to endorse or promote products derived
38 * from this software without specific prior written permission.
39 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
40 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
41 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
42 *
43 * $FreeBSD: src/sys/net/if_pppvar.h,v 1.20.8.1 2005/01/31 23:26:23 imp Exp $
44 */
45
46 /*
47 * Supported network protocols. These values are used for
48 * indexing sc_npmode.
49 */
50 #define NP_IP 0 /* Internet Protocol */
51 #define NUM_NP 1 /* Number of NPs. */
52
53 /*
54 * Structure describing each ppp unit.
55 */
56 struct ppp_softc {
57 struct ifnet sc_if; /* network-visible interface */
58 /*hi*/ u_int sc_flags; /* control/status bits; see if_ppp.h */
59 struct callout_handle sc_ch; /* Used for scheduling timeouts */
60 void *sc_devp; /* pointer to device-dep structure */
61 void (*sc_start)(struct ppp_softc *); /* start output proc */
62 void (*sc_ctlp)(struct ppp_softc *); /* rcvd control pkt */
63 void (*sc_relinq)(struct ppp_softc *); /* relinquish ifunit */
64 void (*sc_setmtu)(struct ppp_softc *); /* set mtu */
65 short sc_mru; /* max receive unit */
66 pid_t sc_xfer; /* used in transferring unit */
67 /*hi*/ struct ifqueue sc_rawq; /* received packets */
68 /*net*/ struct ifqueue sc_inq; /* queue of input packets for daemon */
69 /*net*/ struct ifqueue sc_fastq; /* interactive output packet q */
70 struct mbuf *sc_npqueue; /* output packets not to be sent yet */
71 struct mbuf **sc_npqtail; /* ptr to last next ptr in npqueue */
72 struct pppstat sc_stats; /* count of bytes/pkts sent/rcvd */
73 enum NPmode sc_npmode[NUM_NP]; /* what to do with each NP */
74 struct compressor *sc_xcomp; /* transmit compressor */
75 void *sc_xc_state; /* transmit compressor state */
76 struct compressor *sc_rcomp; /* receive decompressor */
77 void *sc_rc_state; /* receive decompressor state */
78 time_t sc_last_sent; /* time (secs) last NP pkt sent */
79 time_t sc_last_recv; /* time (secs) last NP pkt rcvd */
80 #ifdef PPP_FILTER
81 struct bpf_program sc_pass_filt; /* filter for packets to pass */
82 struct bpf_program sc_active_filt; /* filter for "non-idle" packets */
83 #endif /* PPP_FILTER */
84 #ifdef VJC
85 struct slcompress *sc_comp; /* vjc control buffer */
86 #endif
87
88 /* Device-dependent part for async lines. */
89 ext_accm sc_asyncmap; /* async control character map */
90 u_long sc_rasyncmap; /* receive async control char map */
91 struct mbuf *sc_outm; /* mbuf chain currently being output */
92 struct mbuf *sc_m; /* pointer to input mbuf chain */
93 struct mbuf *sc_mc; /* pointer to current input mbuf */
94 char *sc_mp; /* ptr to next char in input mbuf */
95 short sc_ilen; /* length of input packet so far */
96 u_short sc_fcs; /* FCS so far (input) */
97 u_short sc_outfcs; /* FCS so far for output packet */
98 u_char sc_rawin[16]; /* chars as received */
99 int sc_rawin_count; /* # in sc_rawin */
100 LIST_ENTRY(ppp_softc) sc_list;
101 };
102
103 struct ppp_softc *pppalloc(pid_t pid);
104 void pppdealloc(struct ppp_softc *sc);
105 int pppioctl(struct ppp_softc *sc, u_long cmd, caddr_t data, int flag,
106 struct thread *td);
107 int pppoutput(struct ifnet *ifp, struct mbuf *m0, struct sockaddr *dst,
108 struct rtentry *rtp);
109 void ppp_restart(struct ppp_softc *sc);
110 void ppppktin(struct ppp_softc *sc, struct mbuf *m, int lost);
111 struct mbuf *ppp_dequeue(struct ppp_softc *sc);
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