usr.bin/systat/ip.c

   1 /*-
   2  * Copyright (c) 1980, 1992, 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 #include <sys/cdefs.h>
  35
  36 __FBSDID("$FreeBSD$");
  37
  38 #ifdef lint
  39 static const char sccsid[] = "@(#)mbufs.c       8.1 (Berkeley) 6/6/93";
  40 #endif
  41
  42 /* From:
  43         "Id: mbufs.c,v 1.5 1997/02/24 20:59:03 wollman Exp"
  44 */
  45
  46 #include <sys/param.h>
  47 #include <sys/types.h>
  48 #include <sys/socket.h>
  49 #include <sys/sysctl.h>
  50
  51 #include <netinet/in.h>
  52 #include <netinet/in_systm.h>
  53 #include <netinet/ip.h>
  54 #include <netinet/ip_var.h>
  55 #include <netinet/udp.h>
  56 #include <netinet/udp_var.h>
  57
  58 #include <stdlib.h>
  59 #include <string.h>
  60 #include <paths.h>
  61
  62 #include "systat.h"
  63 #include "extern.h"
  64 #include "mode.h"
  65
  66 struct stat {
  67         struct ipstat i;
  68         struct udpstat u;
  69 };
  70
  71 static struct stat curstat, initstat, oldstat;
  72
  73 /*-
  74 --0         1         2         3         4         5         6         7
  75 --0123456789012345678901234567890123456789012345678901234567890123456789012345
  76 00          IP Input                           IP Output
  77 01999999999 total packets received   999999999 total packets sent
  78 02999999999 - with bad checksums     999999999 - generated locally
  79 03999999999 - too short for header   999999999 - output drops
  80 04999999999 - too short for data     999999999 output fragments generated
  81 05999999999 - with invalid hlen      999999999 - fragmentation failed
  82 06999999999 - with invalid length    999999999 destinations unreachable
  83 07999999999 - with invalid version   999999999 packets output via raw IP
  84 08999999999 - jumbograms
  85 09999999999 total fragments received           UDP Statistics
  86 10999999999 - fragments dropped      999999999 total input packets
  87 11999999999 - fragments timed out    999999999 - too short for header
  88 12999999999 - packets reassembled ok 999999999 - invalid checksum
  89 13999999999 packets forwarded        999999999 - no checksum
  90 14999999999 - unreachable dests      999999999 - invalid length
  91 15999999999 - redirects generated    999999999 - no socket for dest port
  92 16999999999 option errors            999999999 - no socket for broadcast
  93 17999999999 unwanted multicasts      999999999 - socket buffer full
  94 18999999999 delivered to upper layer 999999999 total output packets
  95 --0123456789012345678901234567890123456789012345678901234567890123456789012345
  96 --0         1         2         3         4         5         6         7
  97 */
  98
  99 WINDOW *
 100 openip(void)
 101 {
 102         return (subwin(stdscr, LINES-3-1, 0, MAINWIN_ROW, 0));
 103 }
 104
 105 void
 106 closeip(WINDOW *w)
 107 {
 108         if (w == NULL)
 109                 return;
 110         wclear(w);
 111         wrefresh(w);
 112         delwin(w);
 113 }
 114
 115 void
 116 labelip(void)
 117 {
 118         wmove(wnd, 0, 0); wclrtoeol(wnd);
 119 #define L(row, str) mvwprintw(wnd, row, 10, str)
 120 #define R(row, str) mvwprintw(wnd, row, 45, str);
 121         L(0, "IP Input");               R(0, "IP Output");
 122         L(1, "total packets received"); R(1, "total packets sent");
 123         L(2, "- with bad checksums");   R(2, "- generated locally");
 124         L(3, "- too short for header"); R(3, "- output drops");
 125         L(4, "- too short for data");   R(4, "output fragments generated");
 126         L(5, "- with invalid hlen");    R(5, "- fragmentation failed");
 127         L(6, "- with invalid length");  R(6, "destinations unreachable");
 128         L(7, "- with invalid version"); R(7, "packets output via raw IP");
 129         L(8, "- jumbograms");
 130         L(9, "total fragments received");       R(9, "UDP Statistics");
 131         L(10, "- fragments dropped");   R(10, "total input packets");
 132         L(11, "- fragments timed out"); R(11, "- too short for header");
 133         L(12, "- packets reassembled ok");      R(12, "- invalid checksum");
 134         L(13, "packets forwarded");     R(13, "- no checksum");
 135         L(14, "- unreachable dests");   R(14, "- invalid length");
 136         L(15, "- redirects generated"); R(15, "- no socket for dest port");
 137         L(16, "option errors");         R(16, "- no socket for broadcast");
 138         L(17, "unwanted multicasts");   R(17, "- socket buffer full");
 139         L(18, "delivered to upper layer");      R(18, "total output packets");
 140 #undef L
 141 #undef R
 142 }
 143
 144 static void
 145 domode(struct stat *ret)
 146 {
 147         const struct stat *sub;
 148         int divisor = 1;
 149
 150         switch(currentmode) {
 151         case display_RATE:
 152                 sub = &oldstat;
 153                 divisor = naptime;
 154                 break;
 155         case display_DELTA:
 156                 sub = &oldstat;
 157                 break;
 158         case display_SINCE:
 159                 sub = &initstat;
 160                 break;
 161         default:
 162                 *ret = curstat;
 163                 return;
 164         }
 165 #define DO(stat) ret->stat = (curstat.stat - sub->stat) / divisor
 166         DO(i.ips_total);
 167         DO(i.ips_badsum);
 168         DO(i.ips_tooshort);
 169         DO(i.ips_toosmall);
 170         DO(i.ips_badhlen);
 171         DO(i.ips_badlen);
 172         DO(i.ips_fragments);
 173         DO(i.ips_fragdropped);
 174         DO(i.ips_fragtimeout);
 175         DO(i.ips_forward);
 176         DO(i.ips_cantforward);
 177         DO(i.ips_redirectsent);
 178         DO(i.ips_noproto);
 179         DO(i.ips_delivered);
 180         DO(i.ips_localout);
 181         DO(i.ips_odropped);
 182         DO(i.ips_reassembled);
 183         DO(i.ips_fragmented);
 184         DO(i.ips_ofragments);
 185         DO(i.ips_cantfrag);
 186         DO(i.ips_badoptions);
 187         DO(i.ips_noroute);
 188         DO(i.ips_badvers);
 189         DO(i.ips_rawout);
 190         DO(i.ips_toolong);
 191         DO(i.ips_notmember);
 192         DO(u.udps_ipackets);
 193         DO(u.udps_hdrops);
 194         DO(u.udps_badsum);
 195         DO(u.udps_nosum);
 196         DO(u.udps_badlen);
 197         DO(u.udps_noport);
 198         DO(u.udps_noportbcast);
 199         DO(u.udps_fullsock);
 200         DO(u.udps_opackets);
 201 #undef DO
 202 }
 203
 204 void
 205 showip(void)
 206 {
 207         struct stat stats;
 208         u_long totalout;
 209
 210         domode(&stats);
 211         totalout = stats.i.ips_forward + stats.i.ips_localout;
 212
 213 #define DO(stat, row, col) \
 214         mvwprintw(wnd, row, col, "%9lu", stats.stat)
 215
 216         DO(i.ips_total, 1, 0);
 217         mvwprintw(wnd, 1, 35, "%9lu", totalout);
 218         DO(i.ips_badsum, 2, 0);
 219         DO(i.ips_localout, 2, 35);
 220         DO(i.ips_tooshort, 3, 0);
 221         DO(i.ips_odropped, 3, 35);
 222         DO(i.ips_toosmall, 4, 0);
 223         DO(i.ips_ofragments, 4, 35);
 224         DO(i.ips_badhlen, 5, 0);
 225         DO(i.ips_cantfrag, 5, 35);
 226         DO(i.ips_badlen, 6, 0);
 227         DO(i.ips_noroute, 6, 35);
 228         DO(i.ips_badvers, 7, 0);
 229         DO(i.ips_rawout, 7, 35);
 230         DO(i.ips_toolong, 8, 0);
 231         DO(i.ips_fragments, 9, 0);
 232         DO(i.ips_fragdropped, 10, 0);
 233         DO(u.udps_ipackets, 10, 35);
 234         DO(i.ips_fragtimeout, 11, 0);
 235         DO(u.udps_hdrops, 11, 35);
 236         DO(i.ips_reassembled, 12, 0);
 237         DO(u.udps_badsum, 12, 35);
 238         DO(i.ips_forward, 13, 0);
 239         DO(u.udps_nosum, 13, 35);
 240         DO(i.ips_cantforward, 14, 0);
 241         DO(u.udps_badlen, 14, 35);
 242         DO(i.ips_redirectsent, 15, 0);
 243         DO(u.udps_noport, 15, 35);
 244         DO(i.ips_badoptions, 16, 0);
 245         DO(u.udps_noportbcast, 16, 35);
 246         DO(i.ips_notmember, 17, 0);
 247         DO(u.udps_fullsock, 17, 35);
 248         DO(i.ips_delivered, 18, 0);
 249         DO(u.udps_opackets, 18, 35);
 250 #undef DO
 251 }
 252
 253 int
 254 initip(void)
 255 {
 256         size_t len;
 257         int name[4];
 258
 259         name[0] = CTL_NET;
 260         name[1] = PF_INET;
 261         name[2] = IPPROTO_IP;
 262         name[3] = IPCTL_STATS;
 263
 264         len = 0;
 265         if (sysctl(name, 4, 0, &len, 0, 0) < 0) {
 266                 error("sysctl getting ipstat size failed");
 267                 return 0;
 268         }
 269         if (len > sizeof curstat.i) {
 270                 error("ipstat structure has grown--recompile systat!");
 271                 return 0;
 272         }
 273         if (sysctl(name, 4, &initstat.i, &len, 0, 0) < 0) {
 274                 error("sysctl getting ipstat failed");
 275                 return 0;
 276         }
 277         name[2] = IPPROTO_UDP;
 278         name[3] = UDPCTL_STATS;
 279
 280         len = 0;
 281         if (sysctl(name, 4, 0, &len, 0, 0) < 0) {
 282                 error("sysctl getting udpstat size failed");
 283                 return 0;
 284         }
 285         if (len > sizeof curstat.u) {
 286                 error("ipstat structure has grown--recompile systat!");
 287                 return 0;
 288         }
 289         if (sysctl(name, 4, &initstat.u, &len, 0, 0) < 0) {
 290                 error("sysctl getting udpstat failed");
 291                 return 0;
 292         }
 293         oldstat = initstat;
 294         return 1;
 295 }
 296
 297 void
 298 resetip(void)
 299 {
 300         size_t len;
 301         int name[4];
 302
 303         name[0] = CTL_NET;
 304         name[1] = PF_INET;
 305         name[2] = IPPROTO_IP;
 306         name[3] = IPCTL_STATS;
 307
 308         len = sizeof initstat.i;
 309         if (sysctl(name, 4, &initstat.i, &len, 0, 0) < 0) {
 310                 error("sysctl getting ipstat failed");
 311         }
 312         name[2] = IPPROTO_UDP;
 313         name[3] = UDPCTL_STATS;
 314
 315         len = sizeof initstat.u;
 316         if (sysctl(name, 4, &initstat.u, &len, 0, 0) < 0) {
 317                 error("sysctl getting udpstat failed");
 318         }
 319         oldstat = initstat;
 320 }
 321
 322 void
 323 fetchip(void)
 324 {
 325         int name[4];
 326         size_t len;
 327
 328         oldstat = curstat;
 329         name[0] = CTL_NET;
 330         name[1] = PF_INET;
 331         name[2] = IPPROTO_IP;
 332         name[3] = IPCTL_STATS;
 333         len = sizeof curstat.i;
 334
 335         if (sysctl(name, 4, &curstat.i, &len, 0, 0) < 0)
 336                 return;
 337         name[2] = IPPROTO_UDP;
 338         name[3] = UDPCTL_STATS;
 339         len = sizeof curstat.u;
 340
 341         if (sysctl(name, 4, &curstat.u, &len, 0, 0) < 0)
 342                 return;
 343 }
 344