1 /* 2 * Copyright (c) 1983, 1988, 1993 3 * The Regents of the University of California. 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[] = "@(#)if.c 8.3 (Berkeley) 4/28/95"; 36 #endif /* not lint */ 37 38 #include <sys/types.h> 39 #include <sys/protosw.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 #include <netipx/ipx.h> 47 #include <netipx/ipx_if.h> 48 #ifdef NS 49 #include <netns/ns.h> 50 #include <netns/ns_if.h> 51 #endif 52 #ifdef ISO 53 #include <netiso/iso.h> 54 #include <netiso/iso_var.h> 55 #endif 56 #include <arpa/inet.h> 57 58 #include <signal.h> 59 #include <stdio.h> 60 #include <string.h> 61 #include <unistd.h> 62 63 #include "netstat.h" 64 65 #define YES 1 66 #define NO 0 67 68 static void sidewaysintpr __P((u_int, u_long)); 69 static void catchalarm __P((int)); 70 71 /* 72 * Print a description of the network interfaces. 73 */ 74 void 75 intpr(interval, ifnetaddr) 76 int interval; 77 u_long ifnetaddr; 78 { 79 struct ifnet ifnet; 80 union { 81 struct ifaddr ifa; 82 struct in_ifaddr in; 83 struct ipx_ifaddr ipx; 84 #ifdef NS 85 struct ns_ifaddr ns; 86 #endif 87 #ifdef ISO 88 struct iso_ifaddr iso; 89 #endif 90 } ifaddr; 91 u_long ifaddraddr; 92 struct sockaddr *sa; 93 char name[32], tname[16]; 94 95 if (ifnetaddr == 0) { 96 printf("ifnet: symbol not defined\n"); 97 return; 98 } 99 if (interval) { 100 sidewaysintpr((unsigned)interval, ifnetaddr); 101 return; 102 } 103 if (kread(ifnetaddr, (char *)&ifnetaddr, sizeof ifnetaddr)) 104 return; 105 printf("%-5.5s %-5.5s %-13.13s %-15.15s %8.8s %5.5s", 106 "Name", "Mtu", "Network", "Address", "Ipkts", "Ierrs"); 107 if (bflag) 108 printf(" %10.10s","Ibytes"); 109 printf(" %8.8s %5.5s", "Opkts", "Oerrs"); 110 if (bflag) 111 printf(" %10.10s","Obytes"); 112 printf(" %5s", "Coll"); 113 if (tflag) 114 printf(" %s", "Time"); 115 if (dflag) 116 printf(" %s", "Drop"); 117 putchar('\n'); 118 ifaddraddr = 0; 119 while (ifnetaddr || ifaddraddr) { 120 struct sockaddr_in *sin; 121 register char *cp; 122 int n, m; 123 124 if (ifaddraddr == 0) { 125 if (kread(ifnetaddr, (char *)&ifnet, sizeof ifnet) || 126 kread((u_long)ifnet.if_name, tname, 16)) 127 return; 128 tname[15] = '\0'; 129 ifnetaddr = (u_long)ifnet.if_next; 130 snprintf(name, 32, "%s%d", tname, ifnet.if_unit); 131 if (interface != 0 && (strcmp(name, interface) != 0)) 132 continue; 133 cp = index(name, '\0'); 134 if ((ifnet.if_flags&IFF_UP) == 0) 135 *cp++ = '*'; 136 *cp = '\0'; 137 ifaddraddr = (u_long)ifnet.if_addrlist; 138 } 139 printf("%-5.5s %-5d ", name, ifnet.if_mtu); 140 if (ifaddraddr == 0) { 141 printf("%-13.13s ", "none"); 142 printf("%-15.15s ", "none"); 143 } else { 144 if (kread(ifaddraddr, (char *)&ifaddr, sizeof ifaddr)) { 145 ifaddraddr = 0; 146 continue; 147 } 148 #define CP(x) ((char *)(x)) 149 cp = (CP(ifaddr.ifa.ifa_addr) - CP(ifaddraddr)) + 150 CP(&ifaddr); sa = (struct sockaddr *)cp; 151 switch (sa->sa_family) { 152 case AF_UNSPEC: 153 printf("%-13.13s ", "none"); 154 printf("%-15.15s ", "none"); 155 break; 156 case AF_INET: 157 sin = (struct sockaddr_in *)sa; 158 #ifdef notdef 159 /* can't use inet_makeaddr because kernel 160 * keeps nets unshifted. 161 */ 162 in = inet_makeaddr(ifaddr.in.ia_subnet, 163 INADDR_ANY); 164 printf("%-13.13s ", netname(in.s_addr, 165 ifaddr.in.ia_subnetmask)); 166 #else 167 printf("%-13.13s ", 168 netname(htonl(ifaddr.in.ia_subnet), 169 ifaddr.in.ia_subnetmask)); 170 #endif 171 printf("%-15.15s ", 172 routename(sin->sin_addr.s_addr)); 173 break; 174 case AF_IPX: 175 { 176 struct sockaddr_ipx *sipx = 177 (struct sockaddr_ipx *)sa; 178 u_long net; 179 char netnum[10]; 180 181 *(union ipx_net *) &net = sipx->sipx_addr.x_net; 182 sprintf(netnum, "%lx", ntohl(net)); 183 printf("ipx:%-8s ", netnum); 184 /* printf("ipx:%-8s ", netname(net, 0L)); */ 185 printf("%-15s ", 186 ipx_phost((struct sockaddr *)sipx)); 187 } 188 break; 189 #ifdef NS 190 case AF_NS: 191 { 192 struct sockaddr_ns *sns = 193 (struct sockaddr_ns *)sa; 194 u_long net; 195 char netnum[10]; 196 197 *(union ns_net *) &net = sns->sns_addr.x_net; 198 sprintf(netnum, "%lxH", ntohl(net)); 199 upHex(netnum); 200 printf("ns:%-8s ", netnum); 201 printf("%-15s ", 202 ns_phost((struct sockaddr *)sns)); 203 } 204 break; 205 #endif 206 case AF_LINK: 207 { 208 struct sockaddr_dl *sdl = 209 (struct sockaddr_dl *)sa; 210 cp = (char *)LLADDR(sdl); 211 n = sdl->sdl_alen; 212 } 213 m = printf("%-11.11s ", "<Link>"); 214 goto hexprint; 215 default: 216 m = printf("(%d)", sa->sa_family); 217 for (cp = sa->sa_len + (char *)sa; 218 --cp > sa->sa_data && (*cp == 0);) {} 219 n = cp - sa->sa_data + 1; 220 cp = sa->sa_data; 221 hexprint: 222 while (--n >= 0) 223 m += printf("%02x%c", *cp++ & 0xff, 224 n > 0 ? '.' : ' '); 225 m = 30 - m; 226 while (m-- > 0) 227 putchar(' '); 228 break; 229 } 230 ifaddraddr = (u_long)ifaddr.ifa.ifa_next; 231 } 232 printf("%8d %5d ", 233 ifnet.if_ipackets, ifnet.if_ierrors); 234 if (bflag) 235 printf("%10d ", ifnet.if_ibytes); 236 printf("%8d %5d ", 237 ifnet.if_opackets, ifnet.if_oerrors); 238 if (bflag) 239 printf("%10d ", ifnet.if_obytes); 240 printf("%5d", ifnet.if_collisions); 241 if (tflag) 242 printf(" %3d", ifnet.if_timer); 243 if (dflag) 244 printf(" %3d", ifnet.if_snd.ifq_drops); 245 putchar('\n'); 246 } 247 } 248 249 #define MAXIF 10 250 struct iftot { 251 char ift_name[16]; /* interface name */ 252 u_int ift_ip; /* input packets */ 253 u_int ift_ie; /* input errors */ 254 u_int ift_op; /* output packets */ 255 u_int ift_oe; /* output errors */ 256 u_int ift_co; /* collisions */ 257 u_int ift_dr; /* drops */ 258 u_int ift_ib; /* input bytes */ 259 u_int ift_ob; /* output bytes */ 260 } iftot[MAXIF]; 261 262 u_char signalled; /* set if alarm goes off "early" */ 263 264 /* 265 * Print a running summary of interface statistics. 266 * Repeat display every interval seconds, showing statistics 267 * collected over that interval. Assumes that interval is non-zero. 268 * First line printed at top of screen is always cumulative. 269 */ 270 static void 271 sidewaysintpr(interval, off) 272 unsigned interval; 273 u_long off; 274 { 275 struct ifnet ifnet; 276 u_long firstifnet; 277 register struct iftot *ip, *total; 278 register int line; 279 struct iftot *lastif, *sum, *interesting; 280 int oldmask; 281 282 if (kread(off, (char *)&firstifnet, sizeof (u_long))) 283 return; 284 lastif = iftot; 285 sum = iftot + MAXIF - 1; 286 total = sum - 1; 287 interesting = iftot; 288 for (off = firstifnet, ip = iftot; off;) { 289 char *cp; 290 char name[16], tname[16]; 291 292 if (kread(off, (char *)&ifnet, sizeof ifnet)) 293 break; 294 if (kread((u_long)ifnet.if_name, tname, 16)) 295 break; 296 tname[15] = '\0'; 297 snprintf(name, 16, "%s%d", tname, ifnet.if_unit); 298 if (interface && strcmp(name, interface) == 0) 299 interesting = ip; 300 snprintf(ip->ift_name, 16, "(%s)", name);; 301 ip++; 302 if (ip >= iftot + MAXIF - 2) 303 break; 304 off = (u_long) ifnet.if_next; 305 } 306 lastif = ip; 307 308 (void)signal(SIGALRM, catchalarm); 309 signalled = NO; 310 (void)alarm(interval); 311 banner: 312 printf(" input %s%-6.6s %soutput ", bflag ? " " : "", 313 interesting->ift_name, bflag ? " " : ""); 314 if (lastif - iftot > 0) { 315 if (dflag) 316 printf(" "); 317 printf(" input %s(Total) %soutput", bflag ? " " : "", 318 bflag ? " " : ""); 319 } 320 for (ip = iftot; ip < iftot + MAXIF; ip++) { 321 ip->ift_ip = 0; 322 ip->ift_ie = 0; 323 ip->ift_op = 0; 324 ip->ift_oe = 0; 325 ip->ift_co = 0; 326 ip->ift_dr = 0; 327 ip->ift_ib = 0; 328 ip->ift_ob = 0; 329 } 330 putchar('\n'); 331 printf("%8.8s %5.5s ", "packets", "errs"); 332 if (bflag) 333 printf("%10.10s ","bytes"); 334 printf("%8.8s %5.5s ", "packets", "errs"); 335 if (bflag) 336 printf("%10.10s ","bytes"); 337 printf("%5.5s ", "colls"); 338 if (dflag) 339 printf("%5.5s ", "drops"); 340 if (lastif - iftot > 0) { 341 printf(" %8.8s %5.5s", "packets", "errs"); 342 if (bflag) 343 printf(" %10.10s", "bytes"); 344 printf(" %8.8s %5.5s", "packets", "errs"); 345 if (bflag) 346 printf(" %10.10s", "bytes"); 347 printf(" %5.5s", "colls"); 348 if (dflag) 349 printf(" %5.5s", "drops"); 350 } 351 putchar('\n'); 352 fflush(stdout); 353 line = 0; 354 loop: 355 sum->ift_ip = 0; 356 sum->ift_ie = 0; 357 sum->ift_op = 0; 358 sum->ift_oe = 0; 359 sum->ift_co = 0; 360 sum->ift_dr = 0; 361 sum->ift_ib = 0; 362 sum->ift_ob = 0; 363 for (off = firstifnet, ip = iftot; off && ip < lastif; ip++) { 364 if (kread(off, (char *)&ifnet, sizeof ifnet)) { 365 off = 0; 366 continue; 367 } 368 if (ip == interesting) { 369 printf("%8u %5u ", 370 ifnet.if_ipackets - ip->ift_ip, 371 ifnet.if_ierrors - ip->ift_ie); 372 if (bflag) 373 printf("%10u ", ifnet.if_ibytes - ip->ift_ib); 374 printf("%8u %5u ", 375 ifnet.if_opackets - ip->ift_op, 376 ifnet.if_oerrors - ip->ift_oe); 377 if (bflag) 378 printf("%10u ", ifnet.if_obytes - ip->ift_ob); 379 printf("%5u", ifnet.if_collisions - ip->ift_co); 380 if (dflag) 381 printf(" %5u", 382 ifnet.if_snd.ifq_drops - ip->ift_dr); 383 } 384 ip->ift_ip = ifnet.if_ipackets; 385 ip->ift_ie = ifnet.if_ierrors; 386 ip->ift_op = ifnet.if_opackets; 387 ip->ift_oe = ifnet.if_oerrors; 388 ip->ift_co = ifnet.if_collisions; 389 ip->ift_dr = ifnet.if_snd.ifq_drops; 390 ip->ift_ib = ifnet.if_ibytes; 391 ip->ift_ob = ifnet.if_obytes; 392 sum->ift_ip += ip->ift_ip; 393 sum->ift_ie += ip->ift_ie; 394 sum->ift_op += ip->ift_op; 395 sum->ift_oe += ip->ift_oe; 396 sum->ift_co += ip->ift_co; 397 sum->ift_dr += ip->ift_dr; 398 sum->ift_ib += ip->ift_ib; 399 sum->ift_ob += ip->ift_ob; 400 off = (u_long) ifnet.if_next; 401 } 402 if (lastif - iftot > 0) { 403 printf(" %8u %5u", 404 sum->ift_ip - total->ift_ip, 405 sum->ift_ie - total->ift_ie); 406 if (bflag) 407 printf(" %10u", sum->ift_ib - total->ift_ib); 408 printf(" %8u %5u", 409 sum->ift_op - total->ift_op, 410 sum->ift_oe - total->ift_oe); 411 if (bflag) 412 printf(" %10u", sum->ift_ob - total->ift_ob); 413 printf(" %5u", sum->ift_co - total->ift_co); 414 if (dflag) 415 printf(" %5u", sum->ift_dr - total->ift_dr); 416 } 417 *total = *sum; 418 putchar('\n'); 419 fflush(stdout); 420 line++; 421 oldmask = sigblock(sigmask(SIGALRM)); 422 if (! signalled) { 423 sigpause(0); 424 } 425 sigsetmask(oldmask); 426 signalled = NO; 427 (void)alarm(interval); 428 if (line == 21) 429 goto banner; 430 goto loop; 431 /*NOTREACHED*/ 432 } 433 434 /* 435 * Called if an interval expires before sidewaysintpr has completed a loop. 436 * Sets a flag to not wait for the alarm. 437 */ 438 static void 439 catchalarm(signo) 440 int signo; 441 { 442 signalled = YES; 443 } 444