Annotation of src/usr.bin/netstat/mroute.c, Revision 1.20
1.20 ! deraadt 1: /* $OpenBSD: mroute.c,v 1.19 2009/07/13 19:13:41 michele 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:
1.18 chl 59: #include <err.h>
60: #include <errno.h>
1.5 millert 61: #include <limits.h>
1.1 deraadt 62: #include <stdio.h>
63: #include <stdlib.h>
64: #include "netstat.h"
65:
1.12 mcbride 66: static void print_bw_meter(struct bw_meter *bw_meter, int *banner_printed);
67:
1.11 deraadt 68: static char *
1.9 deraadt 69: pktscale(u_long n)
1.1 deraadt 70: {
71: static char buf[8];
72: char t;
73:
74: if (n < 1024)
75: t = ' ';
76: else if (n < 1024 * 1024) {
77: t = 'k';
78: n /= 1024;
79: } else {
80: t = 'm';
81: n /= 1048576;
82: }
83:
1.6 deraadt 84: snprintf(buf, sizeof buf, "%lu%c", n, t);
1.1 deraadt 85: return (buf);
86: }
87:
88: void
1.17 deraadt 89: mroutepr(u_long mfchashtbladdr, u_long mfchashaddr, u_long vifaddr)
1.1 deraadt 90: {
91: u_int mrtproto;
92: LIST_HEAD(, mfc) *mfchashtbl;
93: u_long mfchash;
1.17 deraadt 94: struct vif viftable[MAXVIFS], *v;
1.1 deraadt 95: struct mfc *mfcp, mfc;
1.7 mpech 96: vifi_t vifi;
1.17 deraadt 97: int mib[] = { CTL_NET, AF_INET, IPPROTO_IP, IPCTL_MRTPROTO };
98: size_t len = sizeof(int);
99: int i, banner_printed = 0, saved_nflag, numvifs = 0;
1.1 deraadt 100: int nmfc; /* No. of cache entries */
101:
1.17 deraadt 102: if (sysctl(mib, sizeof(mib) / sizeof(mib[0]),
103: &mrtproto, &len, NULL, 0) == -1) {
104: if (errno != ENOPROTOOPT)
105: warn("mroute");
1.1 deraadt 106: return;
107: }
108: switch (mrtproto) {
109: case 0:
110: printf("no multicast routing compiled into this system\n");
111: return;
112: case IGMP_DVMRP:
113: break;
114: default:
115: printf("multicast routing protocol %u, unknown\n", mrtproto);
116: return;
117: }
118:
119: if (mfchashtbladdr == 0) {
120: printf("mfchashtbl: symbol not in namelist\n");
121: return;
122: }
123: if (mfchashaddr == 0) {
124: printf("mfchash: symbol not in namelist\n");
125: return;
126: }
127: if (vifaddr == 0) {
128: printf("viftable: symbol not in namelist\n");
129: return;
130: }
131:
132: saved_nflag = nflag;
133: nflag = 1;
134:
1.13 jaredy 135: kread(vifaddr, &viftable, sizeof(viftable));
1.1 deraadt 136:
137: for (vifi = 0, v = viftable; vifi < MAXVIFS; ++vifi, ++v) {
138: if (v->v_lcl_addr.s_addr == 0)
139: continue;
140: numvifs = vifi;
141:
142: if (!banner_printed) {
143: printf("\nVirtual Interface Table\n %s%s",
144: "Vif Thresh Limit Local-Address ",
145: "Remote-Address Pkt_in Pkt_out\n");
146: banner_printed = 1;
147: }
148:
1.19 michele 149: printf(" %3u %3u %-15.15s",
150: vifi, v->v_threshold,
1.16 claudio 151: routename4(v->v_lcl_addr.s_addr));
1.4 millert 152: printf(" %-15.15s %6lu %7lu\n", (v->v_flags & VIFF_TUNNEL) ?
1.16 claudio 153: routename4(v->v_rmt_addr.s_addr) : "",
1.1 deraadt 154: v->v_pkt_in, v->v_pkt_out);
155: }
156: if (!banner_printed)
1.17 deraadt 157: printf("Virtual Interface Table is empty\n");
1.1 deraadt 158:
1.13 jaredy 159: kread(mfchashtbladdr, &mfchashtbl, sizeof(mfchashtbl));
160: kread(mfchashaddr, &mfchash, sizeof(mfchash));
1.1 deraadt 161: banner_printed = 0;
162: nmfc = 0;
163:
1.2 deraadt 164: if (mfchashtbl != 0)
165: for (i = 0; i <= mfchash; ++i) {
1.13 jaredy 166: kread((u_long)&mfchashtbl[i], &mfcp, sizeof(mfcp));
1.2 deraadt 167:
1.15 otto 168: for (; mfcp != 0; mfcp = LIST_NEXT(&mfc, mfc_hash)) {
1.2 deraadt 169: if (!banner_printed) {
170: printf("\nMulticast Forwarding Cache\n %s%s",
171: "Hash Origin Mcastgroup ",
172: "Traffic In-Vif Out-Vifs/Forw-ttl\n");
173: banner_printed = 1;
174: }
175:
1.13 jaredy 176: kread((u_long)mfcp, &mfc, sizeof(mfc));
1.2 deraadt 177: printf(" %3u %-15.15s",
1.16 claudio 178: i, routename4(mfc.mfc_origin.s_addr));
1.2 deraadt 179: printf(" %-15.15s %7s %3u ",
1.16 claudio 180: routename4(mfc.mfc_mcastgrp.s_addr),
1.2 deraadt 181: pktscale(mfc.mfc_pkt_cnt), mfc.mfc_parent);
182: for (vifi = 0; vifi <= numvifs; ++vifi)
183: if (mfc.mfc_ttls[vifi])
184: printf(" %u/%u", vifi,
185: mfc.mfc_ttls[vifi]);
1.1 deraadt 186:
1.2 deraadt 187: printf("\n");
1.12 mcbride 188:
189: /* Print the bw meter information */
190: {
191: struct bw_meter bw_meter, *bwm;
192: int banner_printed2 = 0;
193:
194: bwm = mfc.mfc_bw_meter;
195: while (bwm) {
196: kread((u_long)bwm,
1.14 deraadt 197: &bw_meter,
198: sizeof bw_meter);
1.12 mcbride 199: print_bw_meter(&bw_meter,
1.14 deraadt 200: &banner_printed2);
1.12 mcbride 201: bwm = bw_meter.bm_mfc_next;
202: }
203: #if 0 /* Don't ever print it? */
204: if (! banner_printed2)
205: printf("\n No Bandwidth Meters\n");
206: #endif
207: }
208:
1.2 deraadt 209: nmfc++;
1.1 deraadt 210: }
211: }
212: if (!banner_printed)
1.17 deraadt 213: printf("Multicast Forwarding Cache is empty\n");
1.1 deraadt 214: else
215: printf("\nTotal no. of entries in cache: %d\n", nmfc);
216:
217: printf("\n");
218: nflag = saved_nflag;
219: }
220:
1.12 mcbride 221: static void
222: print_bw_meter(struct bw_meter *bw_meter, int *banner_printed)
223: {
224: char s0[256], s1[256], s2[256], s3[256];
225: struct timeval now, end, delta;
226:
227: gettimeofday(&now, NULL);
228:
229: if (! *banner_printed) {
230: printf(" Bandwidth Meters\n");
231: printf(" %-30s", "Measured(Start|Packets|Bytes)");
232: printf(" %s", "Type");
233: printf(" %-30s", "Thresh(Interval|Packets|Bytes)");
234: printf(" Remain");
235: printf("\n");
236: *banner_printed = 1;
237: }
238:
239: /* The measured values */
240: if (bw_meter->bm_flags & BW_METER_UNIT_PACKETS)
241: snprintf(s1, sizeof s1, "%llu",
242: bw_meter->bm_measured.b_packets);
243: else
244: snprintf(s1, sizeof s1, "?");
245: if (bw_meter->bm_flags & BW_METER_UNIT_BYTES)
246: snprintf(s2, sizeof s2, "%llu", bw_meter->bm_measured.b_bytes);
247: else
248: snprintf(s2, sizeof s2, "?");
1.20 ! deraadt 249: snprintf(s0, sizeof s0, "%lld.%ld|%s|%s",
! 250: (long long)bw_meter->bm_start_time.tv_sec,
1.12 mcbride 251: bw_meter->bm_start_time.tv_usec,
252: s1, s2);
253: printf(" %-30s", s0);
254:
255: /* The type of entry */
256: snprintf(s0, sizeof s0, "%s", "?");
257: if (bw_meter->bm_flags & BW_METER_GEQ)
258: snprintf(s0, sizeof s0, "%s", ">=");
259: else if (bw_meter->bm_flags & BW_METER_LEQ)
260: snprintf(s0, sizeof s0, "%s", "<=");
261: printf(" %-3s", s0);
262:
263: /* The threshold values */
264: if (bw_meter->bm_flags & BW_METER_UNIT_PACKETS)
265: snprintf(s1, sizeof s1, "%llu",
266: bw_meter->bm_threshold.b_packets);
267: else
268: snprintf(s1, sizeof s1, "?");
269: if (bw_meter->bm_flags & BW_METER_UNIT_BYTES)
270: snprintf(s2, sizeof s2, "%llu",
271: bw_meter->bm_threshold.b_bytes);
272: else
273: snprintf(s2, sizeof s2, "?");
1.20 ! deraadt 274: snprintf(s0, sizeof s0, "%lld.%ld|%s|%s",
! 275: (long long)bw_meter->bm_threshold.b_time.tv_sec,
1.12 mcbride 276: bw_meter->bm_threshold.b_time.tv_usec,
277: s1, s2);
278: printf(" %-30s", s0);
279:
280: /* Remaining time */
281: timeradd(&bw_meter->bm_start_time,
282: &bw_meter->bm_threshold.b_time, &end);
283: if (timercmp(&now, &end, <=)) {
284: timersub(&end, &now, &delta);
1.20 ! deraadt 285: snprintf(s3, sizeof s3, "%lld.%ld",
! 286: (long long)delta.tv_sec, delta.tv_usec);
1.12 mcbride 287: } else {
288: /* Negative time */
289: timersub(&now, &end, &delta);
1.20 ! deraadt 290: snprintf(s3, sizeof s3, "-%lld.%ld",
! 291: (long long)delta.tv_sec, delta.tv_usec);
1.12 mcbride 292: }
293: printf(" %s", s3);
294:
295: printf("\n");
296: }
1.1 deraadt 297:
298: void
1.17 deraadt 299: mrt_stats(void)
1.1 deraadt 300: {
301: u_int mrtproto;
302: struct mrtstat mrtstat;
1.17 deraadt 303: int mib[] = { CTL_NET, AF_INET, IPPROTO_IP, IPCTL_MRTPROTO };
304: int mib2[] = { CTL_NET, AF_INET, IPPROTO_IP, IPCTL_MRTSTATS };
305: size_t len = sizeof(int);
306:
307: if (sysctl(mib, sizeof(mib) / sizeof(mib[0]),
308: &mrtproto, &len, NULL, 0) == -1) {
309: if (errno != ENOPROTOOPT)
310: warn("mroute");
1.1 deraadt 311: return;
312: }
313: switch (mrtproto) {
314: case 0:
315: printf("no multicast routing compiled into this system\n");
316: return;
317:
318: case IGMP_DVMRP:
319: break;
320:
321: default:
322: printf("multicast routing protocol %u, unknown\n", mrtproto);
323: return;
324: }
325:
1.17 deraadt 326: len = sizeof(mrtstat);
327: if (sysctl(mib2, sizeof(mib2) / sizeof(mib2[0]),
328: &mrtstat, &len, NULL, 0) == -1) {
329: if (errno != ENOPROTOOPT)
330: warn("mroute");
1.1 deraadt 331: return;
332: }
333:
334: printf("multicast routing:\n");
1.8 itojun 335: printf("\t%lu datagram%s with no route for origin\n",
1.1 deraadt 336: mrtstat.mrts_no_route, plural(mrtstat.mrts_no_route));
1.8 itojun 337: printf("\t%lu upcall%s made to mrouted\n",
1.1 deraadt 338: mrtstat.mrts_upcalls, plural(mrtstat.mrts_upcalls));
1.8 itojun 339: printf("\t%lu datagram%s with malformed tunnel options\n",
1.1 deraadt 340: mrtstat.mrts_bad_tunnel, plural(mrtstat.mrts_bad_tunnel));
1.8 itojun 341: printf("\t%lu datagram%s with no room for tunnel options\n",
1.1 deraadt 342: mrtstat.mrts_cant_tunnel, plural(mrtstat.mrts_cant_tunnel));
1.8 itojun 343: printf("\t%lu datagram%s arrived on wrong interface\n",
1.1 deraadt 344: mrtstat.mrts_wrong_if, plural(mrtstat.mrts_wrong_if));
1.8 itojun 345: printf("\t%lu datagram%s dropped due to upcall Q overflow\n",
1.1 deraadt 346: mrtstat.mrts_upq_ovflw, plural(mrtstat.mrts_upq_ovflw));
1.8 itojun 347: printf("\t%lu datagram%s dropped due to upcall socket overflow\n",
1.1 deraadt 348: mrtstat.mrts_upq_sockfull, plural(mrtstat.mrts_upq_sockfull));
1.8 itojun 349: printf("\t%lu datagram%s cleaned up by the cache\n",
1.1 deraadt 350: mrtstat.mrts_cache_cleanups, plural(mrtstat.mrts_cache_cleanups));
1.8 itojun 351: printf("\t%lu datagram%s dropped selectively by ratelimiter\n",
1.1 deraadt 352: mrtstat.mrts_drop_sel, plural(mrtstat.mrts_drop_sel));
1.8 itojun 353: printf("\t%lu datagram%s dropped - bucket Q overflow\n",
1.1 deraadt 354: mrtstat.mrts_q_overflow, plural(mrtstat.mrts_q_overflow));
1.8 itojun 355: printf("\t%lu datagram%s dropped - larger than bkt size\n",
1.1 deraadt 356: mrtstat.mrts_pkt2large, plural(mrtstat.mrts_pkt2large));
357: }
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