1 /* 2 * Copyright (c) 1983, 1988 Regents of the University of California. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 #ifndef lint 35 /*static char sccsid[] = "from: @(#)if.c 5.15 (Berkeley) 3/1/91";*/ 36 static char rcsid[] = "$Id: if.c,v 1.3 1993/08/01 18:10:53 mycroft Exp $"; 37 #endif /* not lint */ 38 39 #include <sys/types.h> 40 #include <sys/socket.h> 41 42 #include <net/if.h> 43 #include <net/if_dl.h> 44 #include <netinet/in.h> 45 #include <netinet/in_var.h> 46 47 #ifdef NS 48 #include <netns/ns.h> 49 #include <netns/ns_if.h> 50 #endif /* NS */ 51 52 #ifdef ISO 53 #include <netiso/iso.h> 54 #include <netiso/iso_var.h> 55 #endif /* ISO */ 56 57 #include <stdio.h> 58 #include <signal.h> 59 60 #define YES 1 61 #define NO 0 62 63 extern int tflag; 64 extern int dflag; 65 extern int nflag; 66 extern char *interface; 67 extern int unit; 68 extern char *routename(), *netname(), *ns_phost(); 69 char *index(); 70 71 /* 72 * Print a description of the network interfaces. 73 */ 74 intpr(interval, ifnetaddr) 75 int interval; 76 off_t ifnetaddr; 77 { 78 struct ifnet ifnet; 79 union { 80 struct ifaddr ifa; 81 struct in_ifaddr in; 82 #ifdef NS 83 struct ns_ifaddr ns; 84 #endif 85 #ifdef ISO 86 struct iso_ifaddr iso; 87 #endif 88 } ifaddr; 89 off_t ifaddraddr; 90 struct sockaddr *sa; 91 char name[16]; 92 93 if (ifnetaddr == 0) { 94 printf("ifnet: symbol not defined\n"); 95 return; 96 } 97 if (interval) { 98 sidewaysintpr((unsigned)interval, ifnetaddr); 99 return; 100 } 101 kvm_read(ifnetaddr, (char *)&ifnetaddr, sizeof ifnetaddr); 102 printf("%-5.5s %-5.5s %-11.11s %-15.15s %8.8s %5.5s %8.8s %5.5s", 103 "Name", "Mtu", "Network", "Address", "Ipkts", "Ierrs", 104 "Opkts", "Oerrs"); 105 printf(" %5s", "Coll"); 106 if (tflag) 107 printf(" %s", "Time"); 108 if (dflag) 109 printf(" %s", "Drop"); 110 putchar('\n'); 111 ifaddraddr = 0; 112 while (ifnetaddr || ifaddraddr) { 113 struct sockaddr_in *sin; 114 #ifdef ISO 115 struct sockaddr_iso *siso; 116 #endif 117 register char *cp; 118 int n, m; 119 struct in_addr inet_makeaddr(); 120 121 if (ifaddraddr == 0) { 122 kvm_read(ifnetaddr, (char *)&ifnet, sizeof ifnet); 123 kvm_read((off_t)ifnet.if_name, name, 16); 124 name[15] = '\0'; 125 ifnetaddr = (off_t) ifnet.if_next; 126 if (interface != 0 && 127 (strcmp(name, interface) != 0 || unit != ifnet.if_unit)) 128 continue; 129 cp = index(name, '\0'); 130 *cp++ = ifnet.if_unit + '0'; 131 if ((ifnet.if_flags&IFF_UP) == 0) 132 *cp++ = '*'; 133 *cp = '\0'; 134 ifaddraddr = (off_t)ifnet.if_addrlist; 135 } 136 printf("%-5.5s %-5d ", name, ifnet.if_mtu); 137 if (ifaddraddr == 0) { 138 printf("%-11.11s ", "none"); 139 printf("%-15.15s ", "none"); 140 } else { 141 kvm_read(ifaddraddr, (char *)&ifaddr, sizeof ifaddr); 142 #define CP(x) ((char *)(x)) 143 cp = (CP(ifaddr.ifa.ifa_addr) - CP(ifaddraddr)) + 144 CP(&ifaddr); sa = (struct sockaddr *)cp; 145 switch (sa->sa_family) { 146 case AF_UNSPEC: 147 printf("%-11.11s ", "none"); 148 printf("%-15.15s ", "none"); 149 break; 150 case AF_INET: 151 sin = (struct sockaddr_in *)sa; 152 #ifdef notdef 153 /* can't use inet_makeaddr because kernel 154 * keeps nets unshifted. 155 */ 156 in = inet_makeaddr(ifaddr.in.ia_subnet, 157 INADDR_ANY); 158 printf("%-11.11s ", netname(in)); 159 #else 160 printf("%-11.11s ", 161 netname(htonl(ifaddr.in.ia_subnet), 162 ifaddr.in.ia_subnetmask)); 163 #endif 164 printf("%-15.15s ", routename(sin->sin_addr)); 165 break; 166 #ifdef NS 167 case AF_NS: 168 { 169 struct sockaddr_ns *sns = 170 (struct sockaddr_ns *)sa; 171 u_long net; 172 char netnum[8]; 173 char *ns_phost(); 174 175 *(union ns_net *) &net = sns->sns_addr.x_net; 176 sprintf(netnum, "%lxH", ntohl(net)); 177 upHex(netnum); 178 printf("ns:%-8s ", netnum); 179 printf("%-15s ", ns_phost(sns)); 180 } 181 break; 182 #endif 183 case AF_LINK: 184 { 185 struct sockaddr_dl *sdl = 186 (struct sockaddr_dl *)sa; 187 cp = (char *)LLADDR(sdl); 188 n = sdl->sdl_alen; 189 } 190 m = printf("%-11.11s ","<Link>"); 191 goto hexprint; 192 #ifdef ISO 193 case AF_ISO: 194 siso = (struct sockaddr_iso *)sa; 195 if(nflag) { 196 printf("%27s ", 197 iso_ntoa(&siso->siso_addr)); 198 } else { 199 /* This will probably truncate the */ 200 /* NSAP prefix */ 201 printf("%-11.11s ", 202 iso_ntoa(&siso->siso_addr)); 203 printf("%-15.15s ", 204 iso_idtoa(&siso->siso_addr)); 205 } 206 break; 207 #endif 208 default: 209 m = printf("(%d)", sa->sa_family); 210 for (cp = sa->sa_len + (char *)sa; 211 --cp > sa->sa_data && (*cp == 0);) {} 212 n = cp - sa->sa_data + 1; 213 cp = sa->sa_data; 214 hexprint: 215 while (--n >= 0) 216 m += printf("%x%c", *cp++ & 0xff, 217 n > 0 ? '.' : ' '); 218 m = 28 - m; 219 while (m-- > 0) 220 putchar(' '); 221 break; 222 } 223 ifaddraddr = (off_t)ifaddr.ifa.ifa_next; 224 } 225 printf("%8d %5d %8d %5d %5d", 226 ifnet.if_ipackets, ifnet.if_ierrors, 227 ifnet.if_opackets, ifnet.if_oerrors, 228 ifnet.if_collisions); 229 if (tflag) 230 printf(" %3d", ifnet.if_timer); 231 if (dflag) 232 printf(" %3d", ifnet.if_snd.ifq_drops); 233 putchar('\n'); 234 } 235 } 236 237 #define MAXIF 10 238 struct iftot { 239 char ift_name[16]; /* interface name */ 240 int ift_ip; /* input packets */ 241 int ift_ie; /* input errors */ 242 int ift_op; /* output packets */ 243 int ift_oe; /* output errors */ 244 int ift_co; /* collisions */ 245 int ift_dr; /* drops */ 246 } iftot[MAXIF]; 247 248 u_char signalled; /* set if alarm goes off "early" */ 249 250 /* 251 * Print a running summary of interface statistics. 252 * Repeat display every interval seconds, showing statistics 253 * collected over that interval. Assumes that interval is non-zero. 254 * First line printed at top of screen is always cumulative. 255 */ 256 sidewaysintpr(interval, off) 257 unsigned interval; 258 off_t off; 259 { 260 struct ifnet ifnet; 261 off_t firstifnet; 262 register struct iftot *ip, *total; 263 register int line; 264 struct iftot *lastif, *sum, *interesting; 265 int oldmask; 266 void catchalarm(); 267 268 kvm_read(off, (char *)&firstifnet, sizeof (off_t)); 269 lastif = iftot; 270 sum = iftot + MAXIF - 1; 271 total = sum - 1; 272 interesting = iftot; 273 for (off = firstifnet, ip = iftot; off;) { 274 char *cp; 275 276 kvm_read(off, (char *)&ifnet, sizeof ifnet); 277 ip->ift_name[0] = '('; 278 kvm_read((off_t)ifnet.if_name, ip->ift_name + 1, 15); 279 if (interface && strcmp(ip->ift_name + 1, interface) == 0 && 280 unit == ifnet.if_unit) 281 interesting = ip; 282 ip->ift_name[15] = '\0'; 283 cp = index(ip->ift_name, '\0'); 284 sprintf(cp, "%d)", ifnet.if_unit); 285 ip++; 286 if (ip >= iftot + MAXIF - 2) 287 break; 288 off = (off_t) ifnet.if_next; 289 } 290 lastif = ip; 291 292 (void)signal(SIGALRM, catchalarm); 293 signalled = NO; 294 (void)alarm(interval); 295 banner: 296 printf(" input %-6.6s output ", interesting->ift_name); 297 if (lastif - iftot > 0) { 298 if (dflag) 299 printf(" "); 300 printf(" input (Total) output"); 301 } 302 for (ip = iftot; ip < iftot + MAXIF; ip++) { 303 ip->ift_ip = 0; 304 ip->ift_ie = 0; 305 ip->ift_op = 0; 306 ip->ift_oe = 0; 307 ip->ift_co = 0; 308 ip->ift_dr = 0; 309 } 310 putchar('\n'); 311 printf("%8.8s %5.5s %8.8s %5.5s %5.5s ", 312 "packets", "errs", "packets", "errs", "colls"); 313 if (dflag) 314 printf("%5.5s ", "drops"); 315 if (lastif - iftot > 0) 316 printf(" %8.8s %5.5s %8.8s %5.5s %5.5s", 317 "packets", "errs", "packets", "errs", "colls"); 318 if (dflag) 319 printf(" %5.5s", "drops"); 320 putchar('\n'); 321 fflush(stdout); 322 line = 0; 323 loop: 324 sum->ift_ip = 0; 325 sum->ift_ie = 0; 326 sum->ift_op = 0; 327 sum->ift_oe = 0; 328 sum->ift_co = 0; 329 sum->ift_dr = 0; 330 for (off = firstifnet, ip = iftot; off && ip < lastif; ip++) { 331 kvm_read(off, (char *)&ifnet, sizeof ifnet); 332 if (ip == interesting) { 333 printf("%8d %5d %8d %5d %5d", 334 ifnet.if_ipackets - ip->ift_ip, 335 ifnet.if_ierrors - ip->ift_ie, 336 ifnet.if_opackets - ip->ift_op, 337 ifnet.if_oerrors - ip->ift_oe, 338 ifnet.if_collisions - ip->ift_co); 339 if (dflag) 340 printf(" %5d", 341 ifnet.if_snd.ifq_drops - ip->ift_dr); 342 } 343 ip->ift_ip = ifnet.if_ipackets; 344 ip->ift_ie = ifnet.if_ierrors; 345 ip->ift_op = ifnet.if_opackets; 346 ip->ift_oe = ifnet.if_oerrors; 347 ip->ift_co = ifnet.if_collisions; 348 ip->ift_dr = ifnet.if_snd.ifq_drops; 349 sum->ift_ip += ip->ift_ip; 350 sum->ift_ie += ip->ift_ie; 351 sum->ift_op += ip->ift_op; 352 sum->ift_oe += ip->ift_oe; 353 sum->ift_co += ip->ift_co; 354 sum->ift_dr += ip->ift_dr; 355 off = (off_t) ifnet.if_next; 356 } 357 if (lastif - iftot > 0) { 358 printf(" %8d %5d %8d %5d %5d", 359 sum->ift_ip - total->ift_ip, 360 sum->ift_ie - total->ift_ie, 361 sum->ift_op - total->ift_op, 362 sum->ift_oe - total->ift_oe, 363 sum->ift_co - total->ift_co); 364 if (dflag) 365 printf(" %5d", sum->ift_dr - total->ift_dr); 366 } 367 *total = *sum; 368 putchar('\n'); 369 fflush(stdout); 370 line++; 371 oldmask = sigblock(sigmask(SIGALRM)); 372 if (! signalled) { 373 sigpause(0); 374 } 375 sigsetmask(oldmask); 376 signalled = NO; 377 (void)alarm(interval); 378 if (line == 21) 379 goto banner; 380 goto loop; 381 /*NOTREACHED*/ 382 } 383 384 /* 385 * Called if an interval expires before sidewaysintpr has completed a loop. 386 * Sets a flag to not wait for the alarm. 387 */ 388 void 389 catchalarm() 390 { 391 signalled = YES; 392 } 393