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