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1.10 ! millert 1: /* $OpenBSD: if.c,v 1.9 1996/08/16 09:38:56 mickey 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
1.10 ! millert 41: static char *rcsid = "$OpenBSD: if.c,v 1.9 1996/08/16 09:38:56 mickey 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>
54: #include <netns/ns.h>
55: #include <netns/ns_if.h>
1.8 mickey 56: #include <netipx/ipx.h>
57: #include <netipx/ipx_if.h>
1.1 deraadt 58: #include <netiso/iso.h>
59: #include <netiso/iso_var.h>
60: #include <arpa/inet.h>
61:
62: #include <signal.h>
63: #include <stdio.h>
64: #include <string.h>
65: #include <unistd.h>
66:
67: #include "netstat.h"
68:
69: #define YES 1
70: #define NO 0
71:
72: static void sidewaysintpr __P((u_int, u_long));
73: static void catchalarm __P((int));
74:
75: /*
76: * Print a description of the network interfaces.
1.3 deraadt 77: * NOTE: ifnetaddr is the location of the kernel global "ifnet",
78: * which is a TAILQ_HEAD.
1.1 deraadt 79: */
80: void
81: intpr(interval, ifnetaddr)
82: int interval;
83: u_long ifnetaddr;
84: {
85: struct ifnet ifnet;
86: union {
87: struct ifaddr ifa;
88: struct in_ifaddr in;
89: struct ns_ifaddr ns;
1.8 mickey 90: struct ipx_ifaddr ipx;
1.1 deraadt 91: struct iso_ifaddr iso;
92: } ifaddr;
93: u_long ifaddraddr;
94: struct sockaddr *sa;
1.3 deraadt 95: struct ifnet_head ifhead; /* TAILQ_HEAD */
96: char name[IFNAMSIZ];
1.1 deraadt 97:
98: if (ifnetaddr == 0) {
99: printf("ifnet: symbol not defined\n");
100: return;
101: }
102: if (interval) {
103: sidewaysintpr((unsigned)interval, ifnetaddr);
104: return;
105: }
1.3 deraadt 106:
107: /*
108: * Find the pointer to the first ifnet structure. Replace
109: * the pointer to the TAILQ_HEAD with the actual pointer
110: * to the first list element.
111: */
112: if (kread(ifnetaddr, (char *)&ifhead, sizeof ifhead))
1.1 deraadt 113: return;
1.3 deraadt 114: ifnetaddr = (u_long)ifhead.tqh_first;
115:
1.2 deraadt 116: printf("%-5.5s %-5.5s %-11.11s %-17.17s %8.8s %5.5s %8.8s %5.5s",
1.1 deraadt 117: "Name", "Mtu", "Network", "Address", "Ipkts", "Ierrs",
118: "Opkts", "Oerrs");
119: printf(" %5s", "Coll");
120: if (tflag)
121: printf(" %s", "Time");
122: if (dflag)
123: printf(" %s", "Drop");
124: putchar('\n');
125: ifaddraddr = 0;
126: while (ifnetaddr || ifaddraddr) {
127: struct sockaddr_in *sin;
128: register char *cp;
129: int n, m;
130:
131: if (ifaddraddr == 0) {
1.3 deraadt 132: if (kread(ifnetaddr, (char *)&ifnet, sizeof ifnet))
1.1 deraadt 133: return;
1.3 deraadt 134: bcopy(ifnet.if_xname, name, IFNAMSIZ);
135: name[IFNAMSIZ - 1] = '\0'; /* sanity */
1.1 deraadt 136: ifnetaddr = (u_long)ifnet.if_list.tqe_next;
1.3 deraadt 137: if (interface != 0 && strcmp(name, interface) != 0)
1.1 deraadt 138: continue;
1.10 ! millert 139: cp = strchr(name, '\0');
1.1 deraadt 140: if ((ifnet.if_flags & IFF_UP) == 0)
141: *cp++ = '*';
142: *cp = '\0';
143: ifaddraddr = (u_long)ifnet.if_addrlist.tqh_first;
144: }
145: printf("%-5.5s %-5d ", name, ifnet.if_mtu);
146: if (ifaddraddr == 0) {
147: printf("%-11.11s ", "none");
148: printf("%-15.15s ", "none");
149: } else {
150: if (kread(ifaddraddr, (char *)&ifaddr, sizeof ifaddr)) {
151: ifaddraddr = 0;
152: continue;
153: }
154: #define CP(x) ((char *)(x))
155: cp = (CP(ifaddr.ifa.ifa_addr) - CP(ifaddraddr)) +
156: CP(&ifaddr); sa = (struct sockaddr *)cp;
157: switch (sa->sa_family) {
158: case AF_UNSPEC:
159: printf("%-11.11s ", "none");
160: printf("%-17.17s ", "none");
161: break;
162: case AF_INET:
163: sin = (struct sockaddr_in *)sa;
164: #ifdef notdef
165: /* can't use inet_makeaddr because kernel
166: * keeps nets unshifted.
167: */
168: in = inet_makeaddr(ifaddr.in.ia_subnet,
169: INADDR_ANY);
170: printf("%-11.11s ", netname(in.s_addr,
171: ifaddr.in.ia_subnetmask));
172: #else
173: printf("%-11.11s ",
174: netname(ifaddr.in.ia_subnet,
175: ifaddr.in.ia_subnetmask));
176: #endif
177: printf("%-17.17s ",
178: routename(sin->sin_addr.s_addr));
179:
180: if (aflag) {
181: u_long multiaddr;
182: struct in_multi inm;
183:
184: multiaddr = (u_long)ifaddr.in.ia_multiaddrs.lh_first;
185: while (multiaddr != 0) {
186: kread(multiaddr, (char *)&inm,
187: sizeof inm);
188: printf("\n%23s %-15.15s ", "",
189: routename(inm.inm_addr.s_addr));
190: multiaddr = (u_long)inm.inm_list.le_next;
191: }
1.8 mickey 192: }
193: break;
194: case AF_IPX:
195: {
196: struct sockaddr_ipx *sipx =
197: (struct sockaddr_ipx *)sa;
198: u_long net;
199: char netnum[8];
200:
201: *(union ipx_net *) &net = sipx->sipx_addr.ipx_net;
1.9 mickey 202: sprintf(netnum, "%xH", ntohl(net));
1.8 mickey 203: upHex(netnum);
204: printf("ipx:%-8s", netnum);
205: printf("%-17s ",
206: ipx_phost((struct sockaddr *)sipx));
1.1 deraadt 207: }
208: break;
209: case AF_NS:
210: {
211: struct sockaddr_ns *sns =
212: (struct sockaddr_ns *)sa;
213: u_long net;
214: char netnum[8];
215:
216: *(union ns_net *) &net = sns->sns_addr.x_net;
1.9 mickey 217: sprintf(netnum, "%xH", ntohl(net));
1.1 deraadt 218: upHex(netnum);
219: printf("ns:%-8s ", netnum);
220: printf("%-17s ",
221: ns_phost((struct sockaddr *)sns));
222: }
223: break;
224: case AF_LINK:
225: {
226: struct sockaddr_dl *sdl =
227: (struct sockaddr_dl *)sa;
1.5 deraadt 228: m = printf("%-11.11s ", "<Link>");
229: if (sdl->sdl_type == IFT_ETHER ||
230: sdl->sdl_type == IFT_FDDI)
231: printf("%-17.17s ",
232: ether_ntoa(LLADDR(sdl)));
233: else {
234: cp = (char *)LLADDR(sdl);
235: n = sdl->sdl_alen;
236: goto hexprint;
237: }
1.1 deraadt 238: }
1.5 deraadt 239: break;
1.1 deraadt 240: default:
241: m = printf("(%d)", sa->sa_family);
242: for (cp = sa->sa_len + (char *)sa;
243: --cp > sa->sa_data && (*cp == 0);) {}
244: n = cp - sa->sa_data + 1;
245: cp = sa->sa_data;
246: hexprint:
247: while (--n >= 0)
248: m += printf("%x%c", *cp++ & 0xff,
249: n > 0 ? '.' : ' ');
250: m = 30 - m;
251: while (m-- > 0)
252: putchar(' ');
253: break;
254: }
255: ifaddraddr = (u_long)ifaddr.ifa.ifa_list.tqe_next;
256: }
257: printf("%8d %5d %8d %5d %5d",
258: ifnet.if_ipackets, ifnet.if_ierrors,
259: ifnet.if_opackets, ifnet.if_oerrors,
260: ifnet.if_collisions);
261: if (tflag)
262: printf(" %3d", ifnet.if_timer);
263: if (dflag)
264: printf(" %3d", ifnet.if_snd.ifq_drops);
265: putchar('\n');
266: }
267: }
268:
1.4 deraadt 269: #define MAXIF 100
1.1 deraadt 270: struct iftot {
1.3 deraadt 271: char ift_name[IFNAMSIZ]; /* interface name */
1.1 deraadt 272: int ift_ip; /* input packets */
273: int ift_ie; /* input errors */
274: int ift_op; /* output packets */
275: int ift_oe; /* output errors */
276: int ift_co; /* collisions */
277: int ift_dr; /* drops */
278: } iftot[MAXIF];
279:
280: u_char signalled; /* set if alarm goes off "early" */
281:
282: /*
283: * Print a running summary of interface statistics.
284: * Repeat display every interval seconds, showing statistics
285: * collected over that interval. Assumes that interval is non-zero.
286: * First line printed at top of screen is always cumulative.
287: */
288: static void
289: sidewaysintpr(interval, off)
290: unsigned interval;
291: u_long off;
292: {
293: struct ifnet ifnet;
294: u_long firstifnet;
295: register struct iftot *ip, *total;
296: register int line;
297: struct iftot *lastif, *sum, *interesting;
1.3 deraadt 298: struct ifnet_head ifhead; /* TAILQ_HEAD */
1.1 deraadt 299: int oldmask;
300:
1.3 deraadt 301: /*
302: * Find the pointer to the first ifnet structure. Replace
303: * the pointer to the TAILQ_HEAD with the actual pointer
304: * to the first list element.
305: */
306: if (kread(off, (char *)&ifhead, sizeof ifhead))
1.1 deraadt 307: return;
1.3 deraadt 308: firstifnet = (u_long)ifhead.tqh_first;
309:
1.1 deraadt 310: lastif = iftot;
311: sum = iftot + MAXIF - 1;
312: total = sum - 1;
1.4 deraadt 313: interesting = (interface == NULL) ? iftot : NULL;
1.1 deraadt 314: for (off = firstifnet, ip = iftot; off;) {
315: if (kread(off, (char *)&ifnet, sizeof ifnet))
316: break;
1.6 deraadt 317: bzero(ip->ift_name, sizeof(ip->ift_name));
318: snprintf(ip->ift_name, IFNAMSIZ, "(%s)", ifnet.if_xname);
319: if (interface && strcmp(ifnet.if_xname, interface) == 0)
1.1 deraadt 320: interesting = ip;
321: ip++;
322: if (ip >= iftot + MAXIF - 2)
323: break;
324: off = (u_long)ifnet.if_list.tqe_next;
1.4 deraadt 325: }
326: if (interesting == NULL) {
327: fprintf(stderr, "%s: %s: unknown interface\n",
328: __progname, interface);
329: exit(1);
1.1 deraadt 330: }
331: lastif = ip;
332:
333: (void)signal(SIGALRM, catchalarm);
334: signalled = NO;
335: (void)alarm(interval);
336: banner:
337: printf(" input %-6.6s output ", interesting->ift_name);
338: if (lastif - iftot > 0) {
339: if (dflag)
340: printf(" ");
341: printf(" input (Total) output");
342: }
343: for (ip = iftot; ip < iftot + MAXIF; ip++) {
344: ip->ift_ip = 0;
345: ip->ift_ie = 0;
346: ip->ift_op = 0;
347: ip->ift_oe = 0;
348: ip->ift_co = 0;
349: ip->ift_dr = 0;
350: }
351: putchar('\n');
352: printf("%8.8s %5.5s %8.8s %5.5s %5.5s ",
353: "packets", "errs", "packets", "errs", "colls");
354: if (dflag)
355: printf("%5.5s ", "drops");
356: if (lastif - iftot > 0)
357: printf(" %8.8s %5.5s %8.8s %5.5s %5.5s",
358: "packets", "errs", "packets", "errs", "colls");
359: if (dflag)
360: printf(" %5.5s", "drops");
361: putchar('\n');
362: fflush(stdout);
363: line = 0;
364: loop:
365: sum->ift_ip = 0;
366: sum->ift_ie = 0;
367: sum->ift_op = 0;
368: sum->ift_oe = 0;
369: sum->ift_co = 0;
370: sum->ift_dr = 0;
371: for (off = firstifnet, ip = iftot; off && ip < lastif; ip++) {
372: if (kread(off, (char *)&ifnet, sizeof ifnet)) {
373: off = 0;
374: continue;
375: }
376: if (ip == interesting) {
377: printf("%8d %5d %8d %5d %5d",
378: ifnet.if_ipackets - ip->ift_ip,
379: ifnet.if_ierrors - ip->ift_ie,
380: ifnet.if_opackets - ip->ift_op,
381: ifnet.if_oerrors - ip->ift_oe,
382: ifnet.if_collisions - ip->ift_co);
383: if (dflag)
384: printf(" %5d",
385: ifnet.if_snd.ifq_drops - ip->ift_dr);
386: }
387: ip->ift_ip = ifnet.if_ipackets;
388: ip->ift_ie = ifnet.if_ierrors;
389: ip->ift_op = ifnet.if_opackets;
390: ip->ift_oe = ifnet.if_oerrors;
391: ip->ift_co = ifnet.if_collisions;
392: ip->ift_dr = ifnet.if_snd.ifq_drops;
393: sum->ift_ip += ip->ift_ip;
394: sum->ift_ie += ip->ift_ie;
395: sum->ift_op += ip->ift_op;
396: sum->ift_oe += ip->ift_oe;
397: sum->ift_co += ip->ift_co;
398: sum->ift_dr += ip->ift_dr;
399: off = (u_long)ifnet.if_list.tqe_next;
400: }
401: if (lastif - iftot > 0) {
402: printf(" %8d %5d %8d %5d %5d",
403: sum->ift_ip - total->ift_ip,
404: sum->ift_ie - total->ift_ie,
405: sum->ift_op - total->ift_op,
406: sum->ift_oe - total->ift_oe,
407: sum->ift_co - total->ift_co);
408: if (dflag)
409: printf(" %5d", sum->ift_dr - total->ift_dr);
410: }
411: *total = *sum;
412: putchar('\n');
413: fflush(stdout);
414: line++;
415: oldmask = sigblock(sigmask(SIGALRM));
416: if (! signalled) {
417: sigpause(0);
418: }
419: sigsetmask(oldmask);
420: signalled = NO;
421: (void)alarm(interval);
422: if (line == 21)
423: goto banner;
424: goto loop;
425: /*NOTREACHED*/
426: }
427:
428: /*
429: * Called if an interval expires before sidewaysintpr has completed a loop.
430: * Sets a flag to not wait for the alarm.
431: */
432: static void
433: catchalarm(signo)
434: int signo;
435: {
436: signalled = YES;
437: }