1 /* 2 * Copyright (c) 1983, 1988, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * %sccs.include.redist.c% 6 */ 7 8 #ifndef lint 9 static char sccsid[] = "@(#)if.c 8.1 (Berkeley) 06/06/93"; 10 #endif /* not lint */ 11 12 #include <sys/types.h> 13 #include <sys/protosw.h> 14 #include <sys/socket.h> 15 #include <net/if.h> 16 #include <net/if_dl.h> 17 #include <netinet/in.h> 18 #include <netinet/in_var.h> 19 #include <netns/ns.h> 20 #include <netns/ns_if.h> 21 #include <netiso/iso.h> 22 #include <netiso/iso_var.h> 23 24 #include <arpa/inet.h> 25 #include <stdio.h> 26 #include <string.h> 27 #include <signal.h> 28 #include <unistd.h> 29 #include "netstat.h" 30 31 #define YES 1 32 #define NO 0 33 34 static void sidewaysintpr __P((unsigned, u_long)); 35 static void catchalarm __P(()); 36 37 /* 38 * Print a description of the network interfaces. 39 */ 40 void 41 intpr(interval, ifnetaddr) 42 int interval; 43 u_long ifnetaddr; 44 { 45 struct ifnet ifnet; 46 union { 47 struct ifaddr ifa; 48 struct in_ifaddr in; 49 struct ns_ifaddr ns; 50 struct iso_ifaddr iso; 51 } ifaddr; 52 u_long ifaddraddr; 53 struct sockaddr *sa; 54 char name[16]; 55 56 if (ifnetaddr == 0) { 57 printf("ifnet: symbol not defined\n"); 58 return; 59 } 60 if (interval) { 61 sidewaysintpr((unsigned)interval, ifnetaddr); 62 return; 63 } 64 if (kread(ifnetaddr, (char *)&ifnetaddr, sizeof ifnetaddr)) 65 return; 66 printf("%-5.5s %-5.5s %-11.11s %-15.15s %8.8s %5.5s %8.8s %5.5s", 67 "Name", "Mtu", "Network", "Address", "Ipkts", "Ierrs", 68 "Opkts", "Oerrs"); 69 printf(" %5s", "Coll"); 70 if (tflag) 71 printf(" %s", "Time"); 72 if (dflag) 73 printf(" %s", "Drop"); 74 putchar('\n'); 75 ifaddraddr = 0; 76 while (ifnetaddr || ifaddraddr) { 77 struct sockaddr_in *sin; 78 register char *cp; 79 int n, m; 80 81 if (ifaddraddr == 0) { 82 if (kread(ifnetaddr, (char *)&ifnet, sizeof ifnet) || 83 kread((u_long)ifnet.if_name, name, 16)) 84 return; 85 name[15] = '\0'; 86 ifnetaddr = (u_long) ifnet.if_next; 87 if (interface != 0 && 88 (strcmp(name, interface) != 0 || unit != ifnet.if_unit)) 89 continue; 90 cp = index(name, '\0'); 91 *cp++ = ifnet.if_unit + '0'; 92 if ((ifnet.if_flags&IFF_UP) == 0) 93 *cp++ = '*'; 94 *cp = '\0'; 95 ifaddraddr = (u_long)ifnet.if_addrlist; 96 } 97 printf("%-5.5s %-5d ", name, ifnet.if_mtu); 98 if (ifaddraddr == 0) { 99 printf("%-11.11s ", "none"); 100 printf("%-15.15s ", "none"); 101 } else { 102 if (kread(ifaddraddr, (char *)&ifaddr, sizeof ifaddr)) { 103 ifaddraddr = 0; 104 continue; 105 } 106 #define CP(x) ((char *)(x)) 107 cp = (CP(ifaddr.ifa.ifa_addr) - CP(ifaddraddr)) + 108 CP(&ifaddr); sa = (struct sockaddr *)cp; 109 switch (sa->sa_family) { 110 case AF_UNSPEC: 111 printf("%-11.11s ", "none"); 112 printf("%-15.15s ", "none"); 113 break; 114 case AF_INET: 115 sin = (struct sockaddr_in *)sa; 116 #ifdef notdef 117 /* can't use inet_makeaddr because kernel 118 * keeps nets unshifted. 119 */ 120 in = inet_makeaddr(ifaddr.in.ia_subnet, 121 INADDR_ANY); 122 printf("%-11.11s ", netname(in.s_addr, 123 ifaddr.in.ia_subnetmask)); 124 #else 125 printf("%-11.11s ", 126 netname(htonl(ifaddr.in.ia_subnet), 127 ifaddr.in.ia_subnetmask)); 128 #endif 129 printf("%-15.15s ", 130 routename(sin->sin_addr.s_addr)); 131 break; 132 case AF_NS: 133 { 134 struct sockaddr_ns *sns = 135 (struct sockaddr_ns *)sa; 136 u_long net; 137 char netnum[8]; 138 139 *(union ns_net *) &net = sns->sns_addr.x_net; 140 sprintf(netnum, "%lxH", ntohl(net)); 141 upHex(netnum); 142 printf("ns:%-8s ", netnum); 143 printf("%-15s ", 144 ns_phost((struct sockaddr *)sns)); 145 } 146 break; 147 case AF_LINK: 148 { 149 struct sockaddr_dl *sdl = 150 (struct sockaddr_dl *)sa; 151 cp = (char *)LLADDR(sdl); 152 n = sdl->sdl_alen; 153 } 154 m = printf("<Link>"); 155 goto hexprint; 156 default: 157 m = printf("(%d)", sa->sa_family); 158 for (cp = sa->sa_len + (char *)sa; 159 --cp > sa->sa_data && (*cp == 0);) {} 160 n = cp - sa->sa_data + 1; 161 cp = sa->sa_data; 162 hexprint: 163 while (--n >= 0) 164 m += printf("%x%c", *cp++ & 0xff, 165 n > 0 ? '.' : ' '); 166 m = 28 - m; 167 while (m-- > 0) 168 putchar(' '); 169 break; 170 } 171 ifaddraddr = (u_long)ifaddr.ifa.ifa_next; 172 } 173 printf("%8d %5d %8d %5d %5d", 174 ifnet.if_ipackets, ifnet.if_ierrors, 175 ifnet.if_opackets, ifnet.if_oerrors, 176 ifnet.if_collisions); 177 if (tflag) 178 printf(" %3d", ifnet.if_timer); 179 if (dflag) 180 printf(" %3d", ifnet.if_snd.ifq_drops); 181 putchar('\n'); 182 } 183 } 184 185 #define MAXIF 10 186 struct iftot { 187 char ift_name[16]; /* interface name */ 188 int ift_ip; /* input packets */ 189 int ift_ie; /* input errors */ 190 int ift_op; /* output packets */ 191 int ift_oe; /* output errors */ 192 int ift_co; /* collisions */ 193 int ift_dr; /* drops */ 194 } iftot[MAXIF]; 195 196 u_char signalled; /* set if alarm goes off "early" */ 197 198 /* 199 * Print a running summary of interface statistics. 200 * Repeat display every interval seconds, showing statistics 201 * collected over that interval. Assumes that interval is non-zero. 202 * First line printed at top of screen is always cumulative. 203 */ 204 static void 205 sidewaysintpr(interval, off) 206 unsigned interval; 207 u_long off; 208 { 209 struct ifnet ifnet; 210 u_long firstifnet; 211 register struct iftot *ip, *total; 212 register int line; 213 struct iftot *lastif, *sum, *interesting; 214 int oldmask; 215 216 if (kread(off, (char *)&firstifnet, sizeof (u_long))) 217 return; 218 lastif = iftot; 219 sum = iftot + MAXIF - 1; 220 total = sum - 1; 221 interesting = iftot; 222 for (off = firstifnet, ip = iftot; off;) { 223 char *cp; 224 225 if (kread(off, (char *)&ifnet, sizeof ifnet)) 226 break; 227 ip->ift_name[0] = '('; 228 if (kread((u_long)ifnet.if_name, ip->ift_name + 1, 15)) 229 break; 230 if (interface && strcmp(ip->ift_name + 1, interface) == 0 && 231 unit == ifnet.if_unit) 232 interesting = ip; 233 ip->ift_name[15] = '\0'; 234 cp = index(ip->ift_name, '\0'); 235 sprintf(cp, "%d)", ifnet.if_unit); 236 ip++; 237 if (ip >= iftot + MAXIF - 2) 238 break; 239 off = (u_long) ifnet.if_next; 240 } 241 lastif = ip; 242 243 (void)signal(SIGALRM, catchalarm); 244 signalled = NO; 245 (void)alarm(interval); 246 banner: 247 printf(" input %-6.6s output ", interesting->ift_name); 248 if (lastif - iftot > 0) { 249 if (dflag) 250 printf(" "); 251 printf(" input (Total) output"); 252 } 253 for (ip = iftot; ip < iftot + MAXIF; ip++) { 254 ip->ift_ip = 0; 255 ip->ift_ie = 0; 256 ip->ift_op = 0; 257 ip->ift_oe = 0; 258 ip->ift_co = 0; 259 ip->ift_dr = 0; 260 } 261 putchar('\n'); 262 printf("%8.8s %5.5s %8.8s %5.5s %5.5s ", 263 "packets", "errs", "packets", "errs", "colls"); 264 if (dflag) 265 printf("%5.5s ", "drops"); 266 if (lastif - iftot > 0) 267 printf(" %8.8s %5.5s %8.8s %5.5s %5.5s", 268 "packets", "errs", "packets", "errs", "colls"); 269 if (dflag) 270 printf(" %5.5s", "drops"); 271 putchar('\n'); 272 fflush(stdout); 273 line = 0; 274 loop: 275 sum->ift_ip = 0; 276 sum->ift_ie = 0; 277 sum->ift_op = 0; 278 sum->ift_oe = 0; 279 sum->ift_co = 0; 280 sum->ift_dr = 0; 281 for (off = firstifnet, ip = iftot; off && ip < lastif; ip++) { 282 if (kread(off, (char *)&ifnet, sizeof ifnet)) { 283 off = 0; 284 continue; 285 } 286 if (ip == interesting) { 287 printf("%8d %5d %8d %5d %5d", 288 ifnet.if_ipackets - ip->ift_ip, 289 ifnet.if_ierrors - ip->ift_ie, 290 ifnet.if_opackets - ip->ift_op, 291 ifnet.if_oerrors - ip->ift_oe, 292 ifnet.if_collisions - ip->ift_co); 293 if (dflag) 294 printf(" %5d", 295 ifnet.if_snd.ifq_drops - ip->ift_dr); 296 } 297 ip->ift_ip = ifnet.if_ipackets; 298 ip->ift_ie = ifnet.if_ierrors; 299 ip->ift_op = ifnet.if_opackets; 300 ip->ift_oe = ifnet.if_oerrors; 301 ip->ift_co = ifnet.if_collisions; 302 ip->ift_dr = ifnet.if_snd.ifq_drops; 303 sum->ift_ip += ip->ift_ip; 304 sum->ift_ie += ip->ift_ie; 305 sum->ift_op += ip->ift_op; 306 sum->ift_oe += ip->ift_oe; 307 sum->ift_co += ip->ift_co; 308 sum->ift_dr += ip->ift_dr; 309 off = (u_long) ifnet.if_next; 310 } 311 if (lastif - iftot > 0) { 312 printf(" %8d %5d %8d %5d %5d", 313 sum->ift_ip - total->ift_ip, 314 sum->ift_ie - total->ift_ie, 315 sum->ift_op - total->ift_op, 316 sum->ift_oe - total->ift_oe, 317 sum->ift_co - total->ift_co); 318 if (dflag) 319 printf(" %5d", sum->ift_dr - total->ift_dr); 320 } 321 *total = *sum; 322 putchar('\n'); 323 fflush(stdout); 324 line++; 325 oldmask = sigblock(sigmask(SIGALRM)); 326 if (! signalled) { 327 sigpause(0); 328 } 329 sigsetmask(oldmask); 330 signalled = NO; 331 (void)alarm(interval); 332 if (line == 21) 333 goto banner; 334 goto loop; 335 /*NOTREACHED*/ 336 } 337 338 /* 339 * Called if an interval expires before sidewaysintpr has completed a loop. 340 * Sets a flag to not wait for the alarm. 341 */ 342 static void 343 catchalarm() 344 { 345 signalled = YES; 346 } 347