1 /* $OpenBSD: if_slvar.h,v 1.12 2003/12/07 15:41:27 markus Exp $ */
2 /* $NetBSD: if_slvar.h,v 1.16 1996/05/07 02:40:46 thorpej Exp $ */
3
4 /*-
5 * Copyright (c) 1991, 1993
6 * The Regents of the University of California. All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. Neither the name of the University nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 *
32 * @(#)if_slvar.h 8.3 (Berkeley) 2/1/94
33 */
34
35 #ifndef _NET_IF_SLVAR_H_
36 #define _NET_IF_SLVAR_H_
37
38 /*
39 * Definitions for SLIP interface data structures
40 *
41 * (This exists so programs like slstats can get at the definition
42 * of sl_softc.)
43 */
44 struct sl_softc {
45 struct ifnet sc_if; /* network-visible interface */
46 int sc_unit; /* XXX unit number */
47 struct ifqueue sc_fastq; /* interactive output queue */
48 struct tty *sc_ttyp; /* pointer to tty structure */
49 u_char *sc_mp; /* pointer to next available buf char */
50 u_char *sc_ep; /* pointer to last available buf char */
51 u_char *sc_pktstart; /* pointer to beginning of packet */
52 struct mbuf *sc_mbuf; /* input buffer */
53 u_int sc_flags; /* see below */
54 u_int sc_escape; /* =1 if last char input was FRAME_ESCAPE */
55 long sc_lasttime; /* last time a char arrived */
56 long sc_abortcount; /* number of abort esacpe chars */
57 long sc_starttime; /* time of first abort in window */
58 long sc_oqlen; /* previous output queue size */
59 long sc_otimeout; /* number of times output's stalled */
60 #if defined(__NetBSD__) || defined(__OpenBSD__)
61 int sc_oldbufsize; /* previous output buffer size */
62 int sc_oldbufquot; /* previous output buffer quoting */
63 #endif
64 #ifdef INET /* XXX */
65 struct slcompress sc_comp; /* tcp compression data */
66 #endif
67 caddr_t sc_bpf; /* BPF data */
68 struct timeval sc_lastpacket; /* for watchdog */
69 LIST_ENTRY(sl_softc) sc_list; /* all slip interfaces */
70 };
71
72 /*
73 * Statistics.
74 */
75 struct slstat {
76 u_int sl_ibytes; /* bytes received */
77 u_int sl_ipackets; /* packets received */
78 u_int sl_obytes; /* bytes sent */
79 u_int sl_opackets; /* packets sent */
80 };
81
82 struct vjstat {
83 u_int vjs_packets; /* outbound packets */
84 u_int vjs_compressed; /* outbound compressed packets */
85 u_int vjs_searches; /* searches for connection state */
86 u_int vjs_misses; /* times couldn't find conn. state */
87 u_int vjs_uncompressedin; /* inbound uncompressed packets */
88 u_int vjs_compressedin; /* inbound compressed packets */
89 u_int vjs_errorin; /* inbound unknown type packets */
90 u_int vjs_tossed; /* inbound packets tossed because of error */
91 };
92
93 struct sl_stats {
94 struct slstat sl; /* basic PPP statistics */
95 struct vjstat vj; /* VJ header compression statistics */
96 };
97
98 struct ifslstatsreq {
99 char ifr_name[IFNAMSIZ];
100 struct sl_stats stats;
101 };
102
103 /* internal flags */
104 #define SC_ERROR 0x0001 /* had an input error */
105
106 /* visible flags */
107 #define SC_COMPRESS IFF_LINK0 /* compress TCP traffic */
108 #define SC_NOICMP IFF_LINK1 /* supress ICMP traffic */
109 #define SC_AUTOCOMP IFF_LINK2 /* auto-enable TCP compression */
110
111 /*
112 * These two are interface ioctls so that pppstats can do them on
113 * a socket without having to open the serial device.
114 */
115 #define SIOCGSLSTATS _IOWR('i', 123, struct ifslstatsreq)
116
117 #ifdef _KERNEL
118 void slattach(int);
119 void slclose(struct tty *);
120 void slinput(int, struct tty *);
121 int slioctl(struct ifnet *, u_long, caddr_t);
122 int slopen(dev_t, struct tty *);
123 int sloutput(struct ifnet *,
124 struct mbuf *, struct sockaddr *, struct rtentry *);
125 void slstart(struct tty *);
126 int sltioctl(struct tty *, u_long, caddr_t, int);
127 #endif /* _KERNEL */
128 #endif /* _NET_IF_SLVAR_H_ */