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[] = "@(#)if.c 5.15 (Berkeley) 3/1/91"; 36 #endif /* not lint */ 37 38 #include <sys/types.h> 39 #include <sys/socket.h> 40 41 #include <net/if.h> 42 #include <net/if_dl.h> 43 #include <netinet/in.h> 44 #include <netinet/in_var.h> 45 46 #ifdef NS 47 #include <netns/ns.h> 48 #include <netns/ns_if.h> 49 #endif /* NS */ 50 51 #ifdef ISO 52 #include <netiso/iso.h> 53 #include <netiso/iso_var.h> 54 #endif /* ISO */ 55 56 #include <stdio.h> 57 #include <signal.h> 58 59 #define YES 1 60 #define NO 0 61 62 extern int tflag; 63 extern int dflag; 64 extern int nflag; 65 extern char *interface; 66 extern int unit; 67 extern char *routename(), *netname(), *ns_phost(); 68 char *index(); 69 70 /* 71 * Print a description of the network interfaces. 72 */ 73 intpr(interval, ifnetaddr) 74 int interval; 75 off_t ifnetaddr; 76 { 77 struct ifnet ifnet; 78 union { 79 struct ifaddr ifa; 80 struct in_ifaddr in; 81 #ifdef NS 82 struct ns_ifaddr ns; 83 #endif 84 #ifdef ISO 85 struct iso_ifaddr iso; 86 #endif 87 } ifaddr; 88 off_t ifaddraddr; 89 struct sockaddr *sa; 90 char name[16]; 91 92 if (ifnetaddr == 0) { 93 printf("ifnet: symbol not defined\n"); 94 return; 95 } 96 if (interval) { 97 sidewaysintpr((unsigned)interval, ifnetaddr); 98 return; 99 } 100 kvm_read(ifnetaddr, (char *)&ifnetaddr, sizeof ifnetaddr); 101 printf("%-5.5s %-5.5s %-11.11s %-15.15s %8.8s %5.5s %8.8s %5.5s", 102 "Name", "Mtu", "Network", "Address", "Ipkts", "Ierrs", 103 "Opkts", "Oerrs"); 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 struct in_addr inet_makeaddr(); 116 117 if (ifaddraddr == 0) { 118 kvm_read(ifnetaddr, (char *)&ifnet, sizeof ifnet); 119 kvm_read((off_t)ifnet.if_name, name, 16); 120 name[15] = '\0'; 121 ifnetaddr = (off_t) ifnet.if_next; 122 if (interface != 0 && 123 (strcmp(name, interface) != 0 || unit != ifnet.if_unit)) 124 continue; 125 cp = index(name, '\0'); 126 *cp++ = ifnet.if_unit + '0'; 127 if ((ifnet.if_flags&IFF_UP) == 0) 128 *cp++ = '*'; 129 *cp = '\0'; 130 ifaddraddr = (off_t)ifnet.if_addrlist; 131 } 132 printf("%-5.5s %-5d ", name, ifnet.if_mtu); 133 if (ifaddraddr == 0) { 134 printf("%-11.11s ", "none"); 135 printf("%-15.15s ", "none"); 136 } else { 137 kvm_read(ifaddraddr, (char *)&ifaddr, sizeof ifaddr); 138 #define CP(x) ((char *)(x)) 139 cp = (CP(ifaddr.ifa.ifa_addr) - CP(ifaddraddr)) + 140 CP(&ifaddr); sa = (struct sockaddr *)cp; 141 switch (sa->sa_family) { 142 case AF_UNSPEC: 143 printf("%-11.11s ", "none"); 144 printf("%-15.15s ", "none"); 145 break; 146 case AF_INET: 147 sin = (struct sockaddr_in *)sa; 148 #ifdef notdef 149 /* can't use inet_makeaddr because kernel 150 * keeps nets unshifted. 151 */ 152 in = inet_makeaddr(ifaddr.in.ia_subnet, 153 INADDR_ANY); 154 printf("%-11.11s ", netname(in)); 155 #else 156 printf("%-11.11s ", 157 netname(htonl(ifaddr.in.ia_subnet), 158 ifaddr.in.ia_subnetmask)); 159 #endif 160 printf("%-15.15s ", routename(sin->sin_addr)); 161 break; 162 #ifdef NS 163 case AF_NS: 164 { 165 struct sockaddr_ns *sns = 166 (struct sockaddr_ns *)sa; 167 u_long net; 168 char netnum[8]; 169 char *ns_phost(); 170 171 *(union ns_net *) &net = sns->sns_addr.x_net; 172 sprintf(netnum, "%lxH", ntohl(net)); 173 upHex(netnum); 174 printf("ns:%-8s ", netnum); 175 printf("%-15s ", ns_phost(sns)); 176 } 177 break; 178 #endif 179 case AF_LINK: 180 { 181 struct sockaddr_dl *sdl = 182 (struct sockaddr_dl *)sa; 183 cp = (char *)LLADDR(sdl); 184 n = sdl->sdl_alen; 185 } 186 m = printf("<Link>"); 187 goto hexprint; 188 default: 189 m = printf("(%d)", sa->sa_family); 190 for (cp = sa->sa_len + (char *)sa; 191 --cp > sa->sa_data && (*cp == 0);) {} 192 n = cp - sa->sa_data + 1; 193 cp = sa->sa_data; 194 hexprint: 195 while (--n >= 0) 196 m += printf("%x%c", *cp++ & 0xff, 197 n > 0 ? '.' : ' '); 198 m = 28 - m; 199 while (m-- > 0) 200 putchar(' '); 201 break; 202 } 203 ifaddraddr = (off_t)ifaddr.ifa.ifa_next; 204 } 205 printf("%8d %5d %8d %5d %5d", 206 ifnet.if_ipackets, ifnet.if_ierrors, 207 ifnet.if_opackets, ifnet.if_oerrors, 208 ifnet.if_collisions); 209 if (tflag) 210 printf(" %3d", ifnet.if_timer); 211 if (dflag) 212 printf(" %3d", ifnet.if_snd.ifq_drops); 213 putchar('\n'); 214 } 215 } 216 217 #define MAXIF 10 218 struct iftot { 219 char ift_name[16]; /* interface name */ 220 int ift_ip; /* input packets */ 221 int ift_ie; /* input errors */ 222 int ift_op; /* output packets */ 223 int ift_oe; /* output errors */ 224 int ift_co; /* collisions */ 225 int ift_dr; /* drops */ 226 } iftot[MAXIF]; 227 228 u_char signalled; /* set if alarm goes off "early" */ 229 230 /* 231 * Print a running summary of interface statistics. 232 * Repeat display every interval seconds, showing statistics 233 * collected over that interval. Assumes that interval is non-zero. 234 * First line printed at top of screen is always cumulative. 235 */ 236 sidewaysintpr(interval, off) 237 unsigned interval; 238 off_t off; 239 { 240 struct ifnet ifnet; 241 off_t firstifnet; 242 register struct iftot *ip, *total; 243 register int line; 244 struct iftot *lastif, *sum, *interesting; 245 int oldmask; 246 void catchalarm(); 247 248 kvm_read(off, (char *)&firstifnet, sizeof (off_t)); 249 lastif = iftot; 250 sum = iftot + MAXIF - 1; 251 total = sum - 1; 252 interesting = iftot; 253 for (off = firstifnet, ip = iftot; off;) { 254 char *cp; 255 256 kvm_read(off, (char *)&ifnet, sizeof ifnet); 257 ip->ift_name[0] = '('; 258 kvm_read((off_t)ifnet.if_name, ip->ift_name + 1, 15); 259 if (interface && strcmp(ip->ift_name + 1, interface) == 0 && 260 unit == ifnet.if_unit) 261 interesting = ip; 262 ip->ift_name[15] = '\0'; 263 cp = index(ip->ift_name, '\0'); 264 sprintf(cp, "%d)", ifnet.if_unit); 265 ip++; 266 if (ip >= iftot + MAXIF - 2) 267 break; 268 off = (off_t) ifnet.if_next; 269 } 270 lastif = ip; 271 272 (void)signal(SIGALRM, catchalarm); 273 signalled = NO; 274 (void)alarm(interval); 275 banner: 276 printf(" input %-6.6s output ", interesting->ift_name); 277 if (lastif - iftot > 0) { 278 if (dflag) 279 printf(" "); 280 printf(" input (Total) output"); 281 } 282 for (ip = iftot; ip < iftot + MAXIF; ip++) { 283 ip->ift_ip = 0; 284 ip->ift_ie = 0; 285 ip->ift_op = 0; 286 ip->ift_oe = 0; 287 ip->ift_co = 0; 288 ip->ift_dr = 0; 289 } 290 putchar('\n'); 291 printf("%8.8s %5.5s %8.8s %5.5s %5.5s ", 292 "packets", "errs", "packets", "errs", "colls"); 293 if (dflag) 294 printf("%5.5s ", "drops"); 295 if (lastif - iftot > 0) 296 printf(" %8.8s %5.5s %8.8s %5.5s %5.5s", 297 "packets", "errs", "packets", "errs", "colls"); 298 if (dflag) 299 printf(" %5.5s", "drops"); 300 putchar('\n'); 301 fflush(stdout); 302 line = 0; 303 loop: 304 sum->ift_ip = 0; 305 sum->ift_ie = 0; 306 sum->ift_op = 0; 307 sum->ift_oe = 0; 308 sum->ift_co = 0; 309 sum->ift_dr = 0; 310 for (off = firstifnet, ip = iftot; off && ip < lastif; ip++) { 311 kvm_read(off, (char *)&ifnet, sizeof ifnet); 312 if (ip == interesting) { 313 printf("%8d %5d %8d %5d %5d", 314 ifnet.if_ipackets - ip->ift_ip, 315 ifnet.if_ierrors - ip->ift_ie, 316 ifnet.if_opackets - ip->ift_op, 317 ifnet.if_oerrors - ip->ift_oe, 318 ifnet.if_collisions - ip->ift_co); 319 if (dflag) 320 printf(" %5d", 321 ifnet.if_snd.ifq_drops - ip->ift_dr); 322 } 323 ip->ift_ip = ifnet.if_ipackets; 324 ip->ift_ie = ifnet.if_ierrors; 325 ip->ift_op = ifnet.if_opackets; 326 ip->ift_oe = ifnet.if_oerrors; 327 ip->ift_co = ifnet.if_collisions; 328 ip->ift_dr = ifnet.if_snd.ifq_drops; 329 sum->ift_ip += ip->ift_ip; 330 sum->ift_ie += ip->ift_ie; 331 sum->ift_op += ip->ift_op; 332 sum->ift_oe += ip->ift_oe; 333 sum->ift_co += ip->ift_co; 334 sum->ift_dr += ip->ift_dr; 335 off = (off_t) ifnet.if_next; 336 } 337 if (lastif - iftot > 0) { 338 printf(" %8d %5d %8d %5d %5d", 339 sum->ift_ip - total->ift_ip, 340 sum->ift_ie - total->ift_ie, 341 sum->ift_op - total->ift_op, 342 sum->ift_oe - total->ift_oe, 343 sum->ift_co - total->ift_co); 344 if (dflag) 345 printf(" %5d", sum->ift_dr - total->ift_dr); 346 } 347 *total = *sum; 348 putchar('\n'); 349 fflush(stdout); 350 line++; 351 oldmask = sigblock(sigmask(SIGALRM)); 352 if (! signalled) { 353 sigpause(0); 354 } 355 sigsetmask(oldmask); 356 signalled = NO; 357 (void)alarm(interval); 358 if (line == 21) 359 goto banner; 360 goto loop; 361 /*NOTREACHED*/ 362 } 363 364 /* 365 * Called if an interval expires before sidewaysintpr has completed a loop. 366 * Sets a flag to not wait for the alarm. 367 */ 368 void 369 catchalarm() 370 { 371 signalled = YES; 372 } 373