Annotation of src/usr.bin/netstat/mroute.c, Revision 1.17
1.17 ! deraadt 1: /* $OpenBSD: mroute.c,v 1.16 2006/05/27 19:16:37 claudio Exp $ */
1.2 deraadt 2: /* $NetBSD: mroute.c,v 1.10 1996/05/11 13:51:27 mycroft Exp $ */
1.1 deraadt 3:
4: /*
5: * Copyright (c) 1989 Stephen Deering
6: * Copyright (c) 1992, 1993
7: * The Regents of the University of California. All rights reserved.
8: *
9: * This code is derived from software contributed to Berkeley by
10: * Stephen Deering of Stanford University.
11: *
12: * Redistribution and use in source and binary forms, with or without
13: * modification, are permitted provided that the following conditions
14: * are met:
15: * 1. Redistributions of source code must retain the above copyright
16: * notice, this list of conditions and the following disclaimer.
17: * 2. Redistributions in binary form must reproduce the above copyright
18: * notice, this list of conditions and the following disclaimer in the
19: * documentation and/or other materials provided with the distribution.
1.10 millert 20: * 3. Neither the name of the University nor the names of its contributors
1.1 deraadt 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: * from: @(#)mroute.c 8.1 (Berkeley) 6/6/93
37: */
38:
39: /*
1.12 mcbride 40: * Print multicast routing structures and statistics.
1.1 deraadt 41: *
42: * MROUTING 1.0
43: */
44:
45: #include <sys/param.h>
46: #include <sys/socket.h>
47: #include <sys/socketvar.h>
48: #include <sys/protosw.h>
1.17 ! deraadt 49: #include <sys/sysctl.h>
1.1 deraadt 50:
51: #include <net/if.h>
52: #include <net/route.h>
53: #include <netinet/in.h>
54: #include <netinet/igmp.h>
55: #define _KERNEL
56: #include <netinet/ip_mroute.h>
57: #undef _KERNEL
58:
1.5 millert 59: #include <limits.h>
1.1 deraadt 60: #include <stdio.h>
61: #include <stdlib.h>
1.17 ! deraadt 62: #include <errno.h>
1.1 deraadt 63: #include "netstat.h"
64:
1.12 mcbride 65: static void print_bw_meter(struct bw_meter *bw_meter, int *banner_printed);
66:
1.11 deraadt 67: static char *
1.9 deraadt 68: pktscale(u_long n)
1.1 deraadt 69: {
70: static char buf[8];
71: char t;
72:
73: if (n < 1024)
74: t = ' ';
75: else if (n < 1024 * 1024) {
76: t = 'k';
77: n /= 1024;
78: } else {
79: t = 'm';
80: n /= 1048576;
81: }
82:
1.6 deraadt 83: snprintf(buf, sizeof buf, "%lu%c", n, t);
1.1 deraadt 84: return (buf);
85: }
86:
87: void
1.17 ! deraadt 88: mroutepr(u_long mfchashtbladdr, u_long mfchashaddr, u_long vifaddr)
1.1 deraadt 89: {
90: u_int mrtproto;
91: LIST_HEAD(, mfc) *mfchashtbl;
92: u_long mfchash;
1.17 ! deraadt 93: struct vif viftable[MAXVIFS], *v;
1.1 deraadt 94: struct mfc *mfcp, mfc;
1.7 mpech 95: vifi_t vifi;
1.17 ! deraadt 96: int mib[] = { CTL_NET, AF_INET, IPPROTO_IP, IPCTL_MRTPROTO };
! 97: size_t len = sizeof(int);
! 98: int i, banner_printed = 0, saved_nflag, numvifs = 0;
1.1 deraadt 99: int nmfc; /* No. of cache entries */
100:
1.17 ! deraadt 101: if (sysctl(mib, sizeof(mib) / sizeof(mib[0]),
! 102: &mrtproto, &len, NULL, 0) == -1) {
! 103: if (errno != ENOPROTOOPT)
! 104: warn("mroute");
1.1 deraadt 105: return;
106: }
107: switch (mrtproto) {
108: case 0:
109: printf("no multicast routing compiled into this system\n");
110: return;
111: case IGMP_DVMRP:
112: break;
113: default:
114: printf("multicast routing protocol %u, unknown\n", mrtproto);
115: return;
116: }
117:
118: if (mfchashtbladdr == 0) {
119: printf("mfchashtbl: symbol not in namelist\n");
120: return;
121: }
122: if (mfchashaddr == 0) {
123: printf("mfchash: symbol not in namelist\n");
124: return;
125: }
126: if (vifaddr == 0) {
127: printf("viftable: symbol not in namelist\n");
128: return;
129: }
130:
131: saved_nflag = nflag;
132: nflag = 1;
133:
1.13 jaredy 134: kread(vifaddr, &viftable, sizeof(viftable));
1.1 deraadt 135:
136: for (vifi = 0, v = viftable; vifi < MAXVIFS; ++vifi, ++v) {
137: if (v->v_lcl_addr.s_addr == 0)
138: continue;
139: numvifs = vifi;
140:
141: if (!banner_printed) {
142: printf("\nVirtual Interface Table\n %s%s",
143: "Vif Thresh Limit Local-Address ",
144: "Remote-Address Pkt_in Pkt_out\n");
145: banner_printed = 1;
146: }
147:
148: printf(" %3u %3u %5u %-15.15s",
149: vifi, v->v_threshold, v->v_rate_limit,
1.16 claudio 150: routename4(v->v_lcl_addr.s_addr));
1.4 millert 151: printf(" %-15.15s %6lu %7lu\n", (v->v_flags & VIFF_TUNNEL) ?
1.16 claudio 152: routename4(v->v_rmt_addr.s_addr) : "",
1.1 deraadt 153: v->v_pkt_in, v->v_pkt_out);
154: }
155: if (!banner_printed)
1.17 ! deraadt 156: printf("Virtual Interface Table is empty\n");
1.1 deraadt 157:
1.13 jaredy 158: kread(mfchashtbladdr, &mfchashtbl, sizeof(mfchashtbl));
159: kread(mfchashaddr, &mfchash, sizeof(mfchash));
1.1 deraadt 160: banner_printed = 0;
161: nmfc = 0;
162:
1.2 deraadt 163: if (mfchashtbl != 0)
164: for (i = 0; i <= mfchash; ++i) {
1.13 jaredy 165: kread((u_long)&mfchashtbl[i], &mfcp, sizeof(mfcp));
1.2 deraadt 166:
1.15 otto 167: for (; mfcp != 0; mfcp = LIST_NEXT(&mfc, mfc_hash)) {
1.2 deraadt 168: if (!banner_printed) {
169: printf("\nMulticast Forwarding Cache\n %s%s",
170: "Hash Origin Mcastgroup ",
171: "Traffic In-Vif Out-Vifs/Forw-ttl\n");
172: banner_printed = 1;
173: }
174:
1.13 jaredy 175: kread((u_long)mfcp, &mfc, sizeof(mfc));
1.2 deraadt 176: printf(" %3u %-15.15s",
1.16 claudio 177: i, routename4(mfc.mfc_origin.s_addr));
1.2 deraadt 178: printf(" %-15.15s %7s %3u ",
1.16 claudio 179: routename4(mfc.mfc_mcastgrp.s_addr),
1.2 deraadt 180: pktscale(mfc.mfc_pkt_cnt), mfc.mfc_parent);
181: for (vifi = 0; vifi <= numvifs; ++vifi)
182: if (mfc.mfc_ttls[vifi])
183: printf(" %u/%u", vifi,
184: mfc.mfc_ttls[vifi]);
1.1 deraadt 185:
1.2 deraadt 186: printf("\n");
1.12 mcbride 187:
188: /* Print the bw meter information */
189: {
190: struct bw_meter bw_meter, *bwm;
191: int banner_printed2 = 0;
192:
193: bwm = mfc.mfc_bw_meter;
194: while (bwm) {
195: kread((u_long)bwm,
1.14 deraadt 196: &bw_meter,
197: sizeof bw_meter);
1.12 mcbride 198: print_bw_meter(&bw_meter,
1.14 deraadt 199: &banner_printed2);
1.12 mcbride 200: bwm = bw_meter.bm_mfc_next;
201: }
202: #if 0 /* Don't ever print it? */
203: if (! banner_printed2)
204: printf("\n No Bandwidth Meters\n");
205: #endif
206: }
207:
1.2 deraadt 208: nmfc++;
1.1 deraadt 209: }
210: }
211: if (!banner_printed)
1.17 ! deraadt 212: printf("Multicast Forwarding Cache is empty\n");
1.1 deraadt 213: else
214: printf("\nTotal no. of entries in cache: %d\n", nmfc);
215:
216: printf("\n");
217: nflag = saved_nflag;
218: }
219:
1.12 mcbride 220: static void
221: print_bw_meter(struct bw_meter *bw_meter, int *banner_printed)
222: {
223: char s0[256], s1[256], s2[256], s3[256];
224: struct timeval now, end, delta;
225:
226: gettimeofday(&now, NULL);
227:
228: if (! *banner_printed) {
229: printf(" Bandwidth Meters\n");
230: printf(" %-30s", "Measured(Start|Packets|Bytes)");
231: printf(" %s", "Type");
232: printf(" %-30s", "Thresh(Interval|Packets|Bytes)");
233: printf(" Remain");
234: printf("\n");
235: *banner_printed = 1;
236: }
237:
238: /* The measured values */
239: if (bw_meter->bm_flags & BW_METER_UNIT_PACKETS)
240: snprintf(s1, sizeof s1, "%llu",
241: bw_meter->bm_measured.b_packets);
242: else
243: snprintf(s1, sizeof s1, "?");
244: if (bw_meter->bm_flags & BW_METER_UNIT_BYTES)
245: snprintf(s2, sizeof s2, "%llu", bw_meter->bm_measured.b_bytes);
246: else
247: snprintf(s2, sizeof s2, "?");
248: snprintf(s0, sizeof s0, "%lu.%lu|%s|%s",
249: bw_meter->bm_start_time.tv_sec,
250: bw_meter->bm_start_time.tv_usec,
251: s1, s2);
252: printf(" %-30s", s0);
253:
254: /* The type of entry */
255: snprintf(s0, sizeof s0, "%s", "?");
256: if (bw_meter->bm_flags & BW_METER_GEQ)
257: snprintf(s0, sizeof s0, "%s", ">=");
258: else if (bw_meter->bm_flags & BW_METER_LEQ)
259: snprintf(s0, sizeof s0, "%s", "<=");
260: printf(" %-3s", s0);
261:
262: /* The threshold values */
263: if (bw_meter->bm_flags & BW_METER_UNIT_PACKETS)
264: snprintf(s1, sizeof s1, "%llu",
265: bw_meter->bm_threshold.b_packets);
266: else
267: snprintf(s1, sizeof s1, "?");
268: if (bw_meter->bm_flags & BW_METER_UNIT_BYTES)
269: snprintf(s2, sizeof s2, "%llu",
270: bw_meter->bm_threshold.b_bytes);
271: else
272: snprintf(s2, sizeof s2, "?");
273: snprintf(s0, sizeof s0, "%lu.%lu|%s|%s",
274: bw_meter->bm_threshold.b_time.tv_sec,
275: bw_meter->bm_threshold.b_time.tv_usec,
276: s1, s2);
277: printf(" %-30s", s0);
278:
279: /* Remaining time */
280: timeradd(&bw_meter->bm_start_time,
281: &bw_meter->bm_threshold.b_time, &end);
282: if (timercmp(&now, &end, <=)) {
283: timersub(&end, &now, &delta);
284: snprintf(s3, sizeof s3, "%lu.%lu",
285: delta.tv_sec, delta.tv_usec);
286: } else {
287: /* Negative time */
288: timersub(&now, &end, &delta);
289: snprintf(s3, sizeof s3, "-%lu.%lu",
290: delta.tv_sec, delta.tv_usec);
291: }
292: printf(" %s", s3);
293:
294: printf("\n");
295: }
1.1 deraadt 296:
297: void
1.17 ! deraadt 298: mrt_stats(void)
1.1 deraadt 299: {
300: u_int mrtproto;
301: struct mrtstat mrtstat;
1.17 ! deraadt 302: int mib[] = { CTL_NET, AF_INET, IPPROTO_IP, IPCTL_MRTPROTO };
! 303: int mib2[] = { CTL_NET, AF_INET, IPPROTO_IP, IPCTL_MRTSTATS };
! 304: size_t len = sizeof(int);
! 305:
! 306: if (sysctl(mib, sizeof(mib) / sizeof(mib[0]),
! 307: &mrtproto, &len, NULL, 0) == -1) {
! 308: if (errno != ENOPROTOOPT)
! 309: warn("mroute");
1.1 deraadt 310: return;
311: }
312: switch (mrtproto) {
313: case 0:
314: printf("no multicast routing compiled into this system\n");
315: return;
316:
317: case IGMP_DVMRP:
318: break;
319:
320: default:
321: printf("multicast routing protocol %u, unknown\n", mrtproto);
322: return;
323: }
324:
1.17 ! deraadt 325: len = sizeof(mrtstat);
! 326: if (sysctl(mib2, sizeof(mib2) / sizeof(mib2[0]),
! 327: &mrtstat, &len, NULL, 0) == -1) {
! 328: if (errno != ENOPROTOOPT)
! 329: warn("mroute");
1.1 deraadt 330: return;
331: }
332:
333: printf("multicast routing:\n");
1.8 itojun 334: printf("\t%lu datagram%s with no route for origin\n",
1.1 deraadt 335: mrtstat.mrts_no_route, plural(mrtstat.mrts_no_route));
1.8 itojun 336: printf("\t%lu upcall%s made to mrouted\n",
1.1 deraadt 337: mrtstat.mrts_upcalls, plural(mrtstat.mrts_upcalls));
1.8 itojun 338: printf("\t%lu datagram%s with malformed tunnel options\n",
1.1 deraadt 339: mrtstat.mrts_bad_tunnel, plural(mrtstat.mrts_bad_tunnel));
1.8 itojun 340: printf("\t%lu datagram%s with no room for tunnel options\n",
1.1 deraadt 341: mrtstat.mrts_cant_tunnel, plural(mrtstat.mrts_cant_tunnel));
1.8 itojun 342: printf("\t%lu datagram%s arrived on wrong interface\n",
1.1 deraadt 343: mrtstat.mrts_wrong_if, plural(mrtstat.mrts_wrong_if));
1.8 itojun 344: printf("\t%lu datagram%s dropped due to upcall Q overflow\n",
1.1 deraadt 345: mrtstat.mrts_upq_ovflw, plural(mrtstat.mrts_upq_ovflw));
1.8 itojun 346: printf("\t%lu datagram%s dropped due to upcall socket overflow\n",
1.1 deraadt 347: mrtstat.mrts_upq_sockfull, plural(mrtstat.mrts_upq_sockfull));
1.8 itojun 348: printf("\t%lu datagram%s cleaned up by the cache\n",
1.1 deraadt 349: mrtstat.mrts_cache_cleanups, plural(mrtstat.mrts_cache_cleanups));
1.8 itojun 350: printf("\t%lu datagram%s dropped selectively by ratelimiter\n",
1.1 deraadt 351: mrtstat.mrts_drop_sel, plural(mrtstat.mrts_drop_sel));
1.8 itojun 352: printf("\t%lu datagram%s dropped - bucket Q overflow\n",
1.1 deraadt 353: mrtstat.mrts_q_overflow, plural(mrtstat.mrts_q_overflow));
1.8 itojun 354: printf("\t%lu datagram%s dropped - larger than bkt size\n",
1.1 deraadt 355: mrtstat.mrts_pkt2large, plural(mrtstat.mrts_pkt2large));
356: }
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