Annotation of sys/net/if_slvar.h, Revision 1.1.1.1
1.1 nbrk 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_ */
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