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[] = "from: @(#)if.c 8.2 (Berkeley) 2/21/94";*/ 36 static char *rcsid = "$Id: if.c,v 1.9 1994/09/17 00:14:20 mycroft Exp $"; 37 #endif /* not lint */ 38 39 #include <sys/types.h> 40 #include <sys/protosw.h> 41 #include <sys/socket.h> 42 43 #include <net/if.h> 44 #include <net/if_dl.h> 45 #include <netinet/in.h> 46 #include <netinet/in_var.h> 47 #include <netns/ns.h> 48 #include <netns/ns_if.h> 49 #include <netiso/iso.h> 50 #include <netiso/iso_var.h> 51 #include <arpa/inet.h> 52 53 #include <signal.h> 54 #include <stdio.h> 55 #include <string.h> 56 #include <unistd.h> 57 58 #include "netstat.h" 59 60 #define YES 1 61 #define NO 0 62 63 static void sidewaysintpr __P((u_int, u_long)); 64 static void catchalarm __P((int)); 65 66 /* 67 * Print a description of the network interfaces. 68 */ 69 void 70 intpr(interval, ifnetaddr) 71 int interval; 72 u_long ifnetaddr; 73 { 74 struct ifnet ifnet; 75 union { 76 struct ifaddr ifa; 77 struct in_ifaddr in; 78 struct ns_ifaddr ns; 79 struct iso_ifaddr iso; 80 } ifaddr; 81 u_long ifaddraddr; 82 struct sockaddr *sa; 83 char name[16]; 84 85 if (ifnetaddr == 0) { 86 printf("ifnet: symbol not defined\n"); 87 return; 88 } 89 if (interval) { 90 sidewaysintpr((unsigned)interval, ifnetaddr); 91 return; 92 } 93 if (kread(ifnetaddr, (char *)&ifnetaddr, sizeof ifnetaddr)) 94 return; 95 printf("%-5.5s %-5.5s %-11.11s %-15.15s %8.8s %5.5s %8.8s %5.5s", 96 "Name", "Mtu", "Network", "Address", "Ipkts", "Ierrs", 97 "Opkts", "Oerrs"); 98 printf(" %5s", "Coll"); 99 if (tflag) 100 printf(" %s", "Time"); 101 if (dflag) 102 printf(" %s", "Drop"); 103 putchar('\n'); 104 ifaddraddr = 0; 105 while (ifnetaddr || ifaddraddr) { 106 struct sockaddr_in *sin; 107 register char *cp; 108 int n, m; 109 110 if (ifaddraddr == 0) { 111 if (kread(ifnetaddr, (char *)&ifnet, sizeof ifnet) || 112 kread((u_long)ifnet.if_name, name, 16)) 113 return; 114 name[15] = '\0'; 115 ifnetaddr = (u_long)ifnet.if_next; 116 if (interface != 0 && (strcmp(name, interface) != 0 || 117 unit != ifnet.if_unit)) 118 continue; 119 cp = index(name, '\0'); 120 cp += sprintf(cp, "%d", ifnet.if_unit); 121 if ((ifnet.if_flags&IFF_UP) == 0) 122 *cp++ = '*'; 123 *cp = '\0'; 124 ifaddraddr = (u_long)ifnet.if_addrlist; 125 } 126 printf("%-5.5s %-5d ", name, ifnet.if_mtu); 127 if (ifaddraddr == 0) { 128 printf("%-11.11s ", "none"); 129 printf("%-15.15s ", "none"); 130 } else { 131 if (kread(ifaddraddr, (char *)&ifaddr, sizeof ifaddr)) { 132 ifaddraddr = 0; 133 continue; 134 } 135 #define CP(x) ((char *)(x)) 136 cp = (CP(ifaddr.ifa.ifa_addr) - CP(ifaddraddr)) + 137 CP(&ifaddr); sa = (struct sockaddr *)cp; 138 switch (sa->sa_family) { 139 case AF_UNSPEC: 140 printf("%-11.11s ", "none"); 141 printf("%-15.15s ", "none"); 142 break; 143 case AF_INET: 144 sin = (struct sockaddr_in *)sa; 145 #ifdef notdef 146 /* can't use inet_makeaddr because kernel 147 * keeps nets unshifted. 148 */ 149 in = inet_makeaddr(ifaddr.in.ia_subnet, 150 INADDR_ANY); 151 printf("%-11.11s ", netname(in.s_addr, 152 ifaddr.in.ia_subnetmask)); 153 #else 154 printf("%-11.11s ", 155 netname(htonl(ifaddr.in.ia_subnet), 156 ifaddr.in.ia_subnetmask)); 157 #endif 158 printf("%-15.15s ", 159 routename(sin->sin_addr.s_addr)); 160 break; 161 case AF_NS: 162 { 163 struct sockaddr_ns *sns = 164 (struct sockaddr_ns *)sa; 165 u_long net; 166 char netnum[8]; 167 168 *(union ns_net *) &net = sns->sns_addr.x_net; 169 sprintf(netnum, "%lxH", ntohl(net)); 170 upHex(netnum); 171 printf("ns:%-8s ", netnum); 172 printf("%-15s ", 173 ns_phost((struct sockaddr *)sns)); 174 } 175 break; 176 case AF_LINK: 177 { 178 struct sockaddr_dl *sdl = 179 (struct sockaddr_dl *)sa; 180 cp = (char *)LLADDR(sdl); 181 n = sdl->sdl_alen; 182 } 183 m = printf("%-11.11s ", "<Link>"); 184 goto hexprint; 185 default: 186 m = printf("(%d)", sa->sa_family); 187 for (cp = sa->sa_len + (char *)sa; 188 --cp > sa->sa_data && (*cp == 0);) {} 189 n = cp - sa->sa_data + 1; 190 cp = sa->sa_data; 191 hexprint: 192 while (--n >= 0) 193 m += printf("%x%c", *cp++ & 0xff, 194 n > 0 ? '.' : ' '); 195 m = 28 - m; 196 while (m-- > 0) 197 putchar(' '); 198 break; 199 } 200 ifaddraddr = (u_long)ifaddr.ifa.ifa_next; 201 } 202 printf("%8d %5d %8d %5d %5d", 203 ifnet.if_ipackets, ifnet.if_ierrors, 204 ifnet.if_opackets, ifnet.if_oerrors, 205 ifnet.if_collisions); 206 if (tflag) 207 printf(" %3d", ifnet.if_timer); 208 if (dflag) 209 printf(" %3d", ifnet.if_snd.ifq_drops); 210 putchar('\n'); 211 } 212 } 213 214 #define MAXIF 10 215 struct iftot { 216 char ift_name[16]; /* interface name */ 217 int ift_ip; /* input packets */ 218 int ift_ie; /* input errors */ 219 int ift_op; /* output packets */ 220 int ift_oe; /* output errors */ 221 int ift_co; /* collisions */ 222 int ift_dr; /* drops */ 223 } iftot[MAXIF]; 224 225 u_char signalled; /* set if alarm goes off "early" */ 226 227 /* 228 * Print a running summary of interface statistics. 229 * Repeat display every interval seconds, showing statistics 230 * collected over that interval. Assumes that interval is non-zero. 231 * First line printed at top of screen is always cumulative. 232 */ 233 static void 234 sidewaysintpr(interval, off) 235 unsigned interval; 236 u_long off; 237 { 238 struct ifnet ifnet; 239 u_long firstifnet; 240 register struct iftot *ip, *total; 241 register int line; 242 struct iftot *lastif, *sum, *interesting; 243 int oldmask; 244 245 if (kread(off, (char *)&firstifnet, sizeof (u_long))) 246 return; 247 lastif = iftot; 248 sum = iftot + MAXIF - 1; 249 total = sum - 1; 250 interesting = iftot; 251 for (off = firstifnet, ip = iftot; off;) { 252 char *cp; 253 254 if (kread(off, (char *)&ifnet, sizeof ifnet)) 255 break; 256 ip->ift_name[0] = '('; 257 if (kread((u_long)ifnet.if_name, ip->ift_name + 1, 15)) 258 break; 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 = (u_long) 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 if (kread(off, (char *)&ifnet, sizeof ifnet)) { 312 off = 0; 313 continue; 314 } 315 if (ip == interesting) { 316 printf("%8d %5d %8d %5d %5d", 317 ifnet.if_ipackets - ip->ift_ip, 318 ifnet.if_ierrors - ip->ift_ie, 319 ifnet.if_opackets - ip->ift_op, 320 ifnet.if_oerrors - ip->ift_oe, 321 ifnet.if_collisions - ip->ift_co); 322 if (dflag) 323 printf(" %5d", 324 ifnet.if_snd.ifq_drops - ip->ift_dr); 325 } 326 ip->ift_ip = ifnet.if_ipackets; 327 ip->ift_ie = ifnet.if_ierrors; 328 ip->ift_op = ifnet.if_opackets; 329 ip->ift_oe = ifnet.if_oerrors; 330 ip->ift_co = ifnet.if_collisions; 331 ip->ift_dr = ifnet.if_snd.ifq_drops; 332 sum->ift_ip += ip->ift_ip; 333 sum->ift_ie += ip->ift_ie; 334 sum->ift_op += ip->ift_op; 335 sum->ift_oe += ip->ift_oe; 336 sum->ift_co += ip->ift_co; 337 sum->ift_dr += ip->ift_dr; 338 off = (u_long) ifnet.if_next; 339 } 340 if (lastif - iftot > 0) { 341 printf(" %8d %5d %8d %5d %5d", 342 sum->ift_ip - total->ift_ip, 343 sum->ift_ie - total->ift_ie, 344 sum->ift_op - total->ift_op, 345 sum->ift_oe - total->ift_oe, 346 sum->ift_co - total->ift_co); 347 if (dflag) 348 printf(" %5d", sum->ift_dr - total->ift_dr); 349 } 350 *total = *sum; 351 putchar('\n'); 352 fflush(stdout); 353 line++; 354 oldmask = sigblock(sigmask(SIGALRM)); 355 if (! signalled) { 356 sigpause(0); 357 } 358 sigsetmask(oldmask); 359 signalled = NO; 360 (void)alarm(interval); 361 if (line == 21) 362 goto banner; 363 goto loop; 364 /*NOTREACHED*/ 365 } 366 367 /* 368 * Called if an interval expires before sidewaysintpr has completed a loop. 369 * Sets a flag to not wait for the alarm. 370 */ 371 static void 372 catchalarm(signo) 373 int signo; 374 { 375 signalled = YES; 376 } 377