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 MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
19 *
20 * Van Jacobson (van@ee.lbl.gov), Dec 31, 1989:
21 * - Initial distribution.
22 *
23 * $FreeBSD: src/usr.sbin/slstat/slstat.c,v 1.14 1999/08/28 01:20:00 peter Exp $
24 */
25
26 #define _KERNEL_STRUCTURES
27 #include <sys/param.h>
28 #include <sys/mbuf.h>
29 #include <sys/socket.h>
30 #include <sys/sysctl.h>
31 #include <sys/time.h>
32
33 #include <ctype.h>
34 #include <err.h>
35 #include <errno.h>
36 #include <signal.h>
37 #include <stdio.h>
38 #include <stdlib.h>
39 #include <string.h>
40 #include <unistd.h>
41
42 #include <net/if.h>
43 #include <net/if_var.h>
44 #include <net/if_mib.h>
45 #include <net/if_types.h>
46 #include <netinet/in.h>
47 #include <netinet/in_systm.h>
48 #include <netinet/ip.h>
49 #include <net/slcompress.h>
50 #include <net/sl/if_slvar.h>
51
52 static void usage(void);
53 static void intpr(void);
54 static void catchalarm(int);
55
56 #define INTERFACE_PREFIX "sl%d"
57
58 char interface[IFNAMSIZ];
59
60 int rflag;
61 int vflag;
62 unsigned interval = 5;
63 int unit;
64 int name[6];
65
66 int
main(int argc,char ** argv)67 main(int argc, char **argv)
68 {
69 int c, i;
70 size_t len;
71 int maxifno;
72 int indx;
73 struct ifmibdata ifmd;
74
75 while ((c = getopt(argc, argv, "vri:")) != -1) {
76 switch(c) {
77 case 'v':
78 ++vflag;
79 break;
80 case 'r':
81 ++rflag;
82 break;
83 case 'i':
84 interval = atoi(optarg);
85 if (interval <= 0)
86 usage();
87 break;
88 default:
89 usage();
90 }
91 }
92 if (optind >= argc)
93 sprintf(interface, INTERFACE_PREFIX, unit);
94 else if (isdigit(argv[optind][0])) {
95 unit = atoi(argv[optind]);
96 if (unit < 0)
97 usage();
98 sprintf(interface, INTERFACE_PREFIX, unit);
99 } else if (strncmp(argv[optind], "sl", 2) == 0
100 && isdigit(argv[optind][2])
101 && sscanf(argv[optind], "sl%d", &unit) == 1) {
102 strncpy(interface, argv[optind], IFNAMSIZ);
103 } else
104 usage();
105
106 name[0] = CTL_NET;
107 name[1] = PF_LINK;
108 name[2] = NETLINK_GENERIC;
109 name[3] = IFMIB_SYSTEM;
110 name[4] = IFMIB_IFCOUNT;
111 len = sizeof maxifno;
112 if (sysctl(name, 5, &maxifno, &len, 0, 0) < 0)
113 err(1, "sysctl net.link.generic.system.ifcount");
114
115 name[3] = IFMIB_IFDATA;
116 name[5] = IFDATA_GENERAL;
117 len = sizeof ifmd;
118 for (i = 1; ; i++) {
119 name[4] = i;
120
121 if (sysctl(name, 6, &ifmd, &len, 0, 0) < 0)
122 err(1, "sysctl");
123 if (strncmp(interface, ifmd.ifmd_name, IFNAMSIZ) == 0
124 && ifmd.ifmd_data.ifi_type == IFT_SLIP) {
125 indx = i;
126 break;
127 }
128 if (i >= maxifno)
129 errx(1, "interface %s does not exist", interface);
130 }
131
132 name[4] = indx;
133 name[5] = IFDATA_LINKSPECIFIC;
134 intpr();
135 exit(0);
136 }
137
138 #define V(offset) ((line % 20)? ((sc->offset - osc->offset) / \
139 (rflag ? interval : 1)) : sc->offset)
140 #define AMT (sizeof(*sc) - 2 * sizeof(sc->sc_comp.tstate))
141
142 static void
usage(void)143 usage(void)
144 {
145 fprintf(stderr, "usage: slstat [-i interval] [-vr] [unit]\n");
146 exit(1);
147 }
148
149 u_char signalled; /* set if alarm goes off "early" */
150
151 /*
152 * Print a running summary of interface statistics.
153 * Repeat display every interval seconds, showing statistics
154 * collected over that interval. Assumes that interval is non-zero.
155 * First line printed at top of screen is always cumulative.
156 */
157 static void
intpr(void)158 intpr(void)
159 {
160 int line = 0;
161 int oldmask;
162 struct sl_softc *sc, *osc;
163 size_t len;
164
165 sc = (struct sl_softc *)malloc(AMT);
166 osc = (struct sl_softc *)malloc(AMT);
167 bzero((char *)osc, AMT);
168 len = AMT;
169
170 while (1) {
171 if (sysctl(name, 6, sc, &len, 0, 0) < 0 &&
172 (errno != ENOMEM || len != AMT))
173 err(1, "sysctl linkspecific");
174
175 signal(SIGALRM, catchalarm);
176 signalled = 0;
177 alarm(interval);
178
179 if ((line % 20) == 0) {
180 printf("%8.8s %6.6s %6.6s %6.6s %6.6s",
181 "in", "pack", "comp", "uncomp", "unknwn");
182 if (vflag)
183 printf(" %6.6s %6.6s %6.6s",
184 "toss", "other", "err");
185 printf(" | %8.8s %6.6s %6.6s %6.6s %6.6s",
186 "out", "pack", "comp", "uncomp", "other");
187 if (vflag)
188 printf(" %6.6s %6.6s %6.6s %6.6s",
189 "search", "miss", "err", "coll");
190 putchar('\n');
191 }
192 printf("%8lu %6ld %6u %6u %6u",
193 V(sc_if.if_ibytes),
194 V(sc_if.if_ipackets),
195 V(sc_comp.sls_compressedin),
196 V(sc_comp.sls_uncompressedin),
197 V(sc_comp.sls_errorin));
198 if (vflag)
199 printf(" %6u %6lu %6lu",
200 V(sc_comp.sls_tossed),
201 V(sc_if.if_ipackets) -
202 V(sc_comp.sls_compressedin) -
203 V(sc_comp.sls_uncompressedin) -
204 V(sc_comp.sls_errorin),
205 V(sc_if.if_ierrors));
206 printf(" | %8lu %6ld %6u %6u %6lu",
207 V(sc_if.if_obytes) / (rflag ? interval : 1),
208 V(sc_if.if_opackets),
209 V(sc_comp.sls_compressed),
210 V(sc_comp.sls_packets) - V(sc_comp.sls_compressed),
211 V(sc_if.if_opackets) - V(sc_comp.sls_packets));
212 if (vflag)
213 printf(" %6u %6u %6lu %6lu",
214 V(sc_comp.sls_searches),
215 V(sc_comp.sls_misses),
216 V(sc_if.if_oerrors),
217 V(sc_if.if_collisions));
218 putchar('\n');
219 fflush(stdout);
220 line++;
221 oldmask = sigblock(sigmask(SIGALRM));
222 if (! signalled) {
223 sigpause(0);
224 }
225 sigsetmask(oldmask);
226 signalled = 0;
227 alarm(interval);
228 bcopy((char *)sc, (char *)osc, AMT);
229 }
230 }
231
232 /*
233 * Called if an interval expires before sidewaysintpr has completed a loop.
234 * Sets a flag to not wait for the alarm.
235 */
236 static void
catchalarm(int sig)237 catchalarm(int sig)
238 {
239 signalled = 1;
240 }
241