| 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) %G%"; |
| 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 | } |