Initial import from FreeBSD RELENG_4:
[dragonfly.git] / usr.sbin / slstat / slstat.c
CommitLineData
984263bc
MD
1/*
2 * print serial line IP statistics:
3 * slstat [-i interval] [-v] [interface]
4 *
5 * Copyright (c) 1989, 1990, 1991, 1992 Regents of the University of
6 * California. All rights reserved.
7 *
8 * Redistribution and use in source and binary forms are permitted
9 * provided that the above copyright notice and this paragraph are
10 * duplicated in all such forms and that any documentation,
11 * advertising materials, and other materials related to such
12 * distribution and use acknowledge that the software was developed
13 * by the University of California, Berkeley. The name of the
14 * University may not be used to endorse or promote products derived
15 * from this software without specific prior written permission.
16 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
18 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
19 *
20 * Van Jacobson (van@ee.lbl.gov), Dec 31, 1989:
21 * - Initial distribution.
22 */
23
24#ifndef lint
25static const char rcsid[] =
26 "$FreeBSD: src/usr.sbin/slstat/slstat.c,v 1.14 1999/08/28 01:20:00 peter Exp $";
27#endif
28
29#include <sys/param.h>
30#include <sys/mbuf.h>
31#include <sys/socket.h>
32#include <sys/sysctl.h>
33#include <sys/time.h>
34
35#include <ctype.h>
36#include <err.h>
37#include <errno.h>
38#include <signal.h>
39#include <stdio.h>
40#include <stdlib.h>
41#include <string.h>
42#include <unistd.h>
43
44#include <net/if.h>
45#include <net/if_var.h>
46#include <net/if_mib.h>
47#include <net/if_types.h>
48#include <netinet/in.h>
49#include <netinet/in_systm.h>
50#include <netinet/ip.h>
51#include <net/slcompress.h>
52#include <net/if_slvar.h>
53
54static void usage __P((void));
55static void intpr __P((void));
56static void catchalarm __P((int));
57
58#define INTERFACE_PREFIX "sl%d"
59char interface[IFNAMSIZ];
60
61int rflag;
62int vflag;
63unsigned interval = 5;
64int unit;
65int name[6];
66
67int
68main(argc, argv)
69 int argc;
70 char *argv[];
71{
72 int c, i;
73 size_t len;
74 int maxifno;
75 int indx;
76 struct ifmibdata ifmd;
77
78 while ((c = getopt(argc, argv, "vri:")) != -1) {
79 switch(c) {
80 case 'v':
81 ++vflag;
82 break;
83 case 'r':
84 ++rflag;
85 break;
86 case 'i':
87 interval = atoi(optarg);
88 if (interval <= 0)
89 usage();
90 break;
91 default:
92 usage();
93 }
94 }
95 if (optind >= argc)
96 sprintf(interface, INTERFACE_PREFIX, unit);
97 else if (isdigit(argv[optind][0])) {
98 unit = atoi(argv[optind]);
99 if (unit < 0)
100 usage();
101 sprintf(interface, INTERFACE_PREFIX, unit);
102 } else if (strncmp(argv[optind], "sl", 2) == 0
103 && isdigit(argv[optind][2])
104 && sscanf(argv[optind], "sl%d", &unit) == 1) {
105 strncpy(interface, argv[optind], IFNAMSIZ);
106 } else
107 usage();
108
109 name[0] = CTL_NET;
110 name[1] = PF_LINK;
111 name[2] = NETLINK_GENERIC;
112 name[3] = IFMIB_SYSTEM;
113 name[4] = IFMIB_IFCOUNT;
114 len = sizeof maxifno;
115 if (sysctl(name, 5, &maxifno, &len, 0, 0) < 0)
116 err(1, "sysctl net.link.generic.system.ifcount");
117
118 name[3] = IFMIB_IFDATA;
119 name[5] = IFDATA_GENERAL;
120 len = sizeof ifmd;
121 for (i = 1; ; i++) {
122 name[4] = i;
123
124 if (sysctl(name, 6, &ifmd, &len, 0, 0) < 0)
125 err(1, "sysctl");
126 if (strncmp(interface, ifmd.ifmd_name, IFNAMSIZ) == 0
127 && ifmd.ifmd_data.ifi_type == IFT_SLIP) {
128 indx = i;
129 break;
130 }
131 if (i >= maxifno)
132 errx(1, "interface %s does not exist", interface);
133 }
134
135 name[4] = indx;
136 name[5] = IFDATA_LINKSPECIFIC;
137 intpr();
138 exit(0);
139}
140
141#define V(offset) ((line % 20)? ((sc->offset - osc->offset) / \
142 (rflag ? interval : 1)) : sc->offset)
143#define AMT (sizeof(*sc) - 2 * sizeof(sc->sc_comp.tstate))
144
145static void
146usage()
147{
148 fprintf(stderr, "usage: slstat [-i interval] [-vr] [unit]\n");
149 exit(1);
150}
151
152u_char signalled; /* set if alarm goes off "early" */
153
154/*
155 * Print a running summary of interface statistics.
156 * Repeat display every interval seconds, showing statistics
157 * collected over that interval. Assumes that interval is non-zero.
158 * First line printed at top of screen is always cumulative.
159 */
160static void
161intpr()
162{
163 register int line = 0;
164 int oldmask;
165 struct sl_softc *sc, *osc;
166 size_t len;
167
168 sc = (struct sl_softc *)malloc(AMT);
169 osc = (struct sl_softc *)malloc(AMT);
170 bzero((char *)osc, AMT);
171 len = AMT;
172
173 while (1) {
174 if (sysctl(name, 6, sc, &len, 0, 0) < 0 &&
175 (errno != ENOMEM || len != AMT))
176 err(1, "sysctl linkspecific");
177
178 (void)signal(SIGALRM, catchalarm);
179 signalled = 0;
180 (void)alarm(interval);
181
182 if ((line % 20) == 0) {
183 printf("%8.8s %6.6s %6.6s %6.6s %6.6s",
184 "in", "pack", "comp", "uncomp", "unknwn");
185 if (vflag)
186 printf(" %6.6s %6.6s %6.6s",
187 "toss", "other", "err");
188 printf(" | %8.8s %6.6s %6.6s %6.6s %6.6s",
189 "out", "pack", "comp", "uncomp", "other");
190 if (vflag)
191 printf(" %6.6s %6.6s %6.6s %6.6s",
192 "search", "miss", "err", "coll");
193 putchar('\n');
194 }
195 printf("%8lu %6ld %6u %6u %6u",
196 V(sc_if.if_ibytes),
197 V(sc_if.if_ipackets),
198 V(sc_comp.sls_compressedin),
199 V(sc_comp.sls_uncompressedin),
200 V(sc_comp.sls_errorin));
201 if (vflag)
202 printf(" %6u %6lu %6lu",
203 V(sc_comp.sls_tossed),
204 V(sc_if.if_ipackets) -
205 V(sc_comp.sls_compressedin) -
206 V(sc_comp.sls_uncompressedin) -
207 V(sc_comp.sls_errorin),
208 V(sc_if.if_ierrors));
209 printf(" | %8lu %6ld %6u %6u %6lu",
210 V(sc_if.if_obytes) / (rflag ? interval : 1),
211 V(sc_if.if_opackets),
212 V(sc_comp.sls_compressed),
213 V(sc_comp.sls_packets) - V(sc_comp.sls_compressed),
214 V(sc_if.if_opackets) - V(sc_comp.sls_packets));
215 if (vflag)
216 printf(" %6u %6u %6lu %6lu",
217 V(sc_comp.sls_searches),
218 V(sc_comp.sls_misses),
219 V(sc_if.if_oerrors),
220 V(sc_if.if_collisions));
221 putchar('\n');
222 fflush(stdout);
223 line++;
224 oldmask = sigblock(sigmask(SIGALRM));
225 if (! signalled) {
226 sigpause(0);
227 }
228 sigsetmask(oldmask);
229 signalled = 0;
230 (void)alarm(interval);
231 bcopy((char *)sc, (char *)osc, AMT);
232 }
233}
234
235/*
236 * Called if an interval expires before sidewaysintpr has completed a loop.
237 * Sets a flag to not wait for the alarm.
238 */
239static void
240catchalarm(sig)
241 int sig;
242{
243 signalled = 1;
244}