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1.12 ! millert 1: /* $OpenBSD: if.c,v 1.11 1997/06/29 20:17:58 millert Exp $ */
1.6 deraadt 2: /* $NetBSD: if.c,v 1.16.4.2 1996/06/07 21:46:46 thorpej Exp $ */
1.1 deraadt 3:
4: /*
5: * Copyright (c) 1983, 1988, 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. All advertising materials mentioning features or use of this software
17: * must display the following acknowledgement:
18: * This product includes software developed by the University of
19: * California, Berkeley and its contributors.
20: * 4. Neither the name of the University nor the names of its contributors
21: * may be used to endorse or promote products derived from this software
22: * without specific prior written permission.
23: *
24: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34: * SUCH DAMAGE.
35: */
36:
37: #ifndef lint
38: #if 0
39: static char sccsid[] = "from: @(#)if.c 8.2 (Berkeley) 2/21/94";
40: #else
1.12 ! millert 41: static char *rcsid = "$OpenBSD: if.c,v 1.11 1997/06/29 20:17:58 millert Exp $";
1.1 deraadt 42: #endif
43: #endif /* not lint */
44:
45: #include <sys/types.h>
46: #include <sys/protosw.h>
47: #include <sys/socket.h>
48:
49: #include <net/if.h>
50: #include <net/if_dl.h>
1.5 deraadt 51: #include <net/if_types.h>
1.1 deraadt 52: #include <netinet/in.h>
53: #include <netinet/in_var.h>
1.11 millert 54: #include <netinet/if_ether.h>
1.1 deraadt 55: #include <netns/ns.h>
56: #include <netns/ns_if.h>
1.8 mickey 57: #include <netipx/ipx.h>
58: #include <netipx/ipx_if.h>
1.1 deraadt 59: #include <netiso/iso.h>
60: #include <netiso/iso_var.h>
61: #include <arpa/inet.h>
62:
63: #include <signal.h>
64: #include <stdio.h>
65: #include <string.h>
66: #include <unistd.h>
67:
68: #include "netstat.h"
69:
70: #define YES 1
71: #define NO 0
72:
73: static void sidewaysintpr __P((u_int, u_long));
74: static void catchalarm __P((int));
75:
76: /*
77: * Print a description of the network interfaces.
1.3 deraadt 78: * NOTE: ifnetaddr is the location of the kernel global "ifnet",
79: * which is a TAILQ_HEAD.
1.1 deraadt 80: */
81: void
82: intpr(interval, ifnetaddr)
83: int interval;
84: u_long ifnetaddr;
85: {
86: struct ifnet ifnet;
87: union {
88: struct ifaddr ifa;
89: struct in_ifaddr in;
90: struct ns_ifaddr ns;
1.8 mickey 91: struct ipx_ifaddr ipx;
1.1 deraadt 92: struct iso_ifaddr iso;
93: } ifaddr;
94: u_long ifaddraddr;
95: struct sockaddr *sa;
1.3 deraadt 96: struct ifnet_head ifhead; /* TAILQ_HEAD */
97: char name[IFNAMSIZ];
1.1 deraadt 98:
99: if (ifnetaddr == 0) {
100: printf("ifnet: symbol not defined\n");
101: return;
102: }
103: if (interval) {
104: sidewaysintpr((unsigned)interval, ifnetaddr);
105: return;
106: }
1.3 deraadt 107:
108: /*
109: * Find the pointer to the first ifnet structure. Replace
110: * the pointer to the TAILQ_HEAD with the actual pointer
111: * to the first list element.
112: */
113: if (kread(ifnetaddr, (char *)&ifhead, sizeof ifhead))
1.1 deraadt 114: return;
1.3 deraadt 115: ifnetaddr = (u_long)ifhead.tqh_first;
116:
1.2 deraadt 117: printf("%-5.5s %-5.5s %-11.11s %-17.17s %8.8s %5.5s %8.8s %5.5s",
1.1 deraadt 118: "Name", "Mtu", "Network", "Address", "Ipkts", "Ierrs",
119: "Opkts", "Oerrs");
120: printf(" %5s", "Coll");
121: if (tflag)
122: printf(" %s", "Time");
123: if (dflag)
124: printf(" %s", "Drop");
125: putchar('\n');
126: ifaddraddr = 0;
127: while (ifnetaddr || ifaddraddr) {
128: struct sockaddr_in *sin;
129: register char *cp;
130: int n, m;
131:
132: if (ifaddraddr == 0) {
1.3 deraadt 133: if (kread(ifnetaddr, (char *)&ifnet, sizeof ifnet))
1.1 deraadt 134: return;
1.3 deraadt 135: bcopy(ifnet.if_xname, name, IFNAMSIZ);
136: name[IFNAMSIZ - 1] = '\0'; /* sanity */
1.1 deraadt 137: ifnetaddr = (u_long)ifnet.if_list.tqe_next;
1.3 deraadt 138: if (interface != 0 && strcmp(name, interface) != 0)
1.1 deraadt 139: continue;
1.10 millert 140: cp = strchr(name, '\0');
1.1 deraadt 141: if ((ifnet.if_flags & IFF_UP) == 0)
142: *cp++ = '*';
143: *cp = '\0';
144: ifaddraddr = (u_long)ifnet.if_addrlist.tqh_first;
145: }
1.11 millert 146: printf("%-5.5s %-5ld ", name, ifnet.if_mtu);
1.1 deraadt 147: if (ifaddraddr == 0) {
148: printf("%-11.11s ", "none");
149: printf("%-15.15s ", "none");
150: } else {
151: if (kread(ifaddraddr, (char *)&ifaddr, sizeof ifaddr)) {
152: ifaddraddr = 0;
153: continue;
154: }
155: #define CP(x) ((char *)(x))
156: cp = (CP(ifaddr.ifa.ifa_addr) - CP(ifaddraddr)) +
157: CP(&ifaddr); sa = (struct sockaddr *)cp;
158: switch (sa->sa_family) {
159: case AF_UNSPEC:
160: printf("%-11.11s ", "none");
161: printf("%-17.17s ", "none");
162: break;
163: case AF_INET:
164: sin = (struct sockaddr_in *)sa;
165: #ifdef notdef
166: /* can't use inet_makeaddr because kernel
167: * keeps nets unshifted.
168: */
169: in = inet_makeaddr(ifaddr.in.ia_subnet,
170: INADDR_ANY);
171: printf("%-11.11s ", netname(in.s_addr,
172: ifaddr.in.ia_subnetmask));
173: #else
174: printf("%-11.11s ",
175: netname(ifaddr.in.ia_subnet,
176: ifaddr.in.ia_subnetmask));
177: #endif
178: printf("%-17.17s ",
179: routename(sin->sin_addr.s_addr));
180:
181: if (aflag) {
182: u_long multiaddr;
183: struct in_multi inm;
184:
185: multiaddr = (u_long)ifaddr.in.ia_multiaddrs.lh_first;
186: while (multiaddr != 0) {
187: kread(multiaddr, (char *)&inm,
188: sizeof inm);
189: printf("\n%23s %-15.15s ", "",
190: routename(inm.inm_addr.s_addr));
191: multiaddr = (u_long)inm.inm_list.le_next;
192: }
1.8 mickey 193: }
194: break;
195: case AF_IPX:
196: {
197: struct sockaddr_ipx *sipx =
198: (struct sockaddr_ipx *)sa;
199: u_long net;
200: char netnum[8];
201:
202: *(union ipx_net *) &net = sipx->sipx_addr.ipx_net;
1.12 ! millert 203: sprintf(netnum, "%xH", ntohl(net));
1.8 mickey 204: upHex(netnum);
205: printf("ipx:%-8s", netnum);
206: printf("%-17s ",
207: ipx_phost((struct sockaddr *)sipx));
1.1 deraadt 208: }
209: break;
210: case AF_NS:
211: {
212: struct sockaddr_ns *sns =
213: (struct sockaddr_ns *)sa;
214: u_long net;
215: char netnum[8];
216:
217: *(union ns_net *) &net = sns->sns_addr.x_net;
1.12 ! millert 218: sprintf(netnum, "%xH", ntohl(net));
1.1 deraadt 219: upHex(netnum);
220: printf("ns:%-8s ", netnum);
221: printf("%-17s ",
222: ns_phost((struct sockaddr *)sns));
223: }
224: break;
225: case AF_LINK:
226: {
227: struct sockaddr_dl *sdl =
228: (struct sockaddr_dl *)sa;
1.5 deraadt 229: m = printf("%-11.11s ", "<Link>");
230: if (sdl->sdl_type == IFT_ETHER ||
231: sdl->sdl_type == IFT_FDDI)
232: printf("%-17.17s ",
1.11 millert 233: ether_ntoa((struct ether_addr *)LLADDR(sdl)));
1.5 deraadt 234: else {
235: cp = (char *)LLADDR(sdl);
236: n = sdl->sdl_alen;
237: goto hexprint;
238: }
1.1 deraadt 239: }
1.5 deraadt 240: break;
1.1 deraadt 241: default:
242: m = printf("(%d)", sa->sa_family);
243: for (cp = sa->sa_len + (char *)sa;
244: --cp > sa->sa_data && (*cp == 0);) {}
245: n = cp - sa->sa_data + 1;
246: cp = sa->sa_data;
247: hexprint:
248: while (--n >= 0)
249: m += printf("%x%c", *cp++ & 0xff,
250: n > 0 ? '.' : ' ');
251: m = 30 - m;
252: while (m-- > 0)
253: putchar(' ');
254: break;
255: }
256: ifaddraddr = (u_long)ifaddr.ifa.ifa_list.tqe_next;
257: }
1.11 millert 258: printf("%8ld %5ld %8ld %5ld %5ld",
1.1 deraadt 259: ifnet.if_ipackets, ifnet.if_ierrors,
260: ifnet.if_opackets, ifnet.if_oerrors,
261: ifnet.if_collisions);
262: if (tflag)
263: printf(" %3d", ifnet.if_timer);
264: if (dflag)
265: printf(" %3d", ifnet.if_snd.ifq_drops);
266: putchar('\n');
267: }
268: }
269:
1.4 deraadt 270: #define MAXIF 100
1.1 deraadt 271: struct iftot {
1.3 deraadt 272: char ift_name[IFNAMSIZ]; /* interface name */
1.1 deraadt 273: int ift_ip; /* input packets */
274: int ift_ie; /* input errors */
275: int ift_op; /* output packets */
276: int ift_oe; /* output errors */
277: int ift_co; /* collisions */
278: int ift_dr; /* drops */
279: } iftot[MAXIF];
280:
281: u_char signalled; /* set if alarm goes off "early" */
282:
283: /*
284: * Print a running summary of interface statistics.
285: * Repeat display every interval seconds, showing statistics
286: * collected over that interval. Assumes that interval is non-zero.
287: * First line printed at top of screen is always cumulative.
288: */
289: static void
290: sidewaysintpr(interval, off)
291: unsigned interval;
292: u_long off;
293: {
294: struct ifnet ifnet;
295: u_long firstifnet;
296: register struct iftot *ip, *total;
297: register int line;
298: struct iftot *lastif, *sum, *interesting;
1.3 deraadt 299: struct ifnet_head ifhead; /* TAILQ_HEAD */
1.1 deraadt 300: int oldmask;
301:
1.3 deraadt 302: /*
303: * Find the pointer to the first ifnet structure. Replace
304: * the pointer to the TAILQ_HEAD with the actual pointer
305: * to the first list element.
306: */
307: if (kread(off, (char *)&ifhead, sizeof ifhead))
1.1 deraadt 308: return;
1.3 deraadt 309: firstifnet = (u_long)ifhead.tqh_first;
310:
1.1 deraadt 311: lastif = iftot;
312: sum = iftot + MAXIF - 1;
313: total = sum - 1;
1.4 deraadt 314: interesting = (interface == NULL) ? iftot : NULL;
1.1 deraadt 315: for (off = firstifnet, ip = iftot; off;) {
316: if (kread(off, (char *)&ifnet, sizeof ifnet))
317: break;
1.6 deraadt 318: bzero(ip->ift_name, sizeof(ip->ift_name));
319: snprintf(ip->ift_name, IFNAMSIZ, "(%s)", ifnet.if_xname);
320: if (interface && strcmp(ifnet.if_xname, interface) == 0)
1.1 deraadt 321: interesting = ip;
322: ip++;
323: if (ip >= iftot + MAXIF - 2)
324: break;
325: off = (u_long)ifnet.if_list.tqe_next;
1.4 deraadt 326: }
327: if (interesting == NULL) {
328: fprintf(stderr, "%s: %s: unknown interface\n",
329: __progname, interface);
330: exit(1);
1.1 deraadt 331: }
332: lastif = ip;
333:
334: (void)signal(SIGALRM, catchalarm);
335: signalled = NO;
336: (void)alarm(interval);
337: banner:
338: printf(" input %-6.6s output ", interesting->ift_name);
339: if (lastif - iftot > 0) {
340: if (dflag)
341: printf(" ");
342: printf(" input (Total) output");
343: }
344: for (ip = iftot; ip < iftot + MAXIF; ip++) {
345: ip->ift_ip = 0;
346: ip->ift_ie = 0;
347: ip->ift_op = 0;
348: ip->ift_oe = 0;
349: ip->ift_co = 0;
350: ip->ift_dr = 0;
351: }
352: putchar('\n');
353: printf("%8.8s %5.5s %8.8s %5.5s %5.5s ",
354: "packets", "errs", "packets", "errs", "colls");
355: if (dflag)
356: printf("%5.5s ", "drops");
357: if (lastif - iftot > 0)
358: printf(" %8.8s %5.5s %8.8s %5.5s %5.5s",
359: "packets", "errs", "packets", "errs", "colls");
360: if (dflag)
361: printf(" %5.5s", "drops");
362: putchar('\n');
363: fflush(stdout);
364: line = 0;
365: loop:
366: sum->ift_ip = 0;
367: sum->ift_ie = 0;
368: sum->ift_op = 0;
369: sum->ift_oe = 0;
370: sum->ift_co = 0;
371: sum->ift_dr = 0;
372: for (off = firstifnet, ip = iftot; off && ip < lastif; ip++) {
373: if (kread(off, (char *)&ifnet, sizeof ifnet)) {
374: off = 0;
375: continue;
376: }
377: if (ip == interesting) {
1.11 millert 378: printf("%8ld %5ld %8ld %5ld %5ld",
1.1 deraadt 379: ifnet.if_ipackets - ip->ift_ip,
380: ifnet.if_ierrors - ip->ift_ie,
381: ifnet.if_opackets - ip->ift_op,
382: ifnet.if_oerrors - ip->ift_oe,
383: ifnet.if_collisions - ip->ift_co);
384: if (dflag)
385: printf(" %5d",
386: ifnet.if_snd.ifq_drops - ip->ift_dr);
387: }
388: ip->ift_ip = ifnet.if_ipackets;
389: ip->ift_ie = ifnet.if_ierrors;
390: ip->ift_op = ifnet.if_opackets;
391: ip->ift_oe = ifnet.if_oerrors;
392: ip->ift_co = ifnet.if_collisions;
393: ip->ift_dr = ifnet.if_snd.ifq_drops;
394: sum->ift_ip += ip->ift_ip;
395: sum->ift_ie += ip->ift_ie;
396: sum->ift_op += ip->ift_op;
397: sum->ift_oe += ip->ift_oe;
398: sum->ift_co += ip->ift_co;
399: sum->ift_dr += ip->ift_dr;
400: off = (u_long)ifnet.if_list.tqe_next;
401: }
402: if (lastif - iftot > 0) {
403: printf(" %8d %5d %8d %5d %5d",
404: sum->ift_ip - total->ift_ip,
405: sum->ift_ie - total->ift_ie,
406: sum->ift_op - total->ift_op,
407: sum->ift_oe - total->ift_oe,
408: sum->ift_co - total->ift_co);
409: if (dflag)
410: printf(" %5d", sum->ift_dr - total->ift_dr);
411: }
412: *total = *sum;
413: putchar('\n');
414: fflush(stdout);
415: line++;
416: oldmask = sigblock(sigmask(SIGALRM));
417: if (! signalled) {
418: sigpause(0);
419: }
420: sigsetmask(oldmask);
421: signalled = NO;
422: (void)alarm(interval);
423: if (line == 21)
424: goto banner;
425: goto loop;
426: /*NOTREACHED*/
427: }
428:
429: /*
430: * Called if an interval expires before sidewaysintpr has completed a loop.
431: * Sets a flag to not wait for the alarm.
432: */
433: static void
434: catchalarm(signo)
435: int signo;
436: {
437: signalled = YES;
438: }