usr.bin/systat/ip.c

   1 /*      $NetBSD: ip.c,v 1.16 2008/04/10 17:14:25 thorpej Exp $  */
   2
   3 /*
   4  * Copyright (c) 1999, 2000 Andrew Doran <ad@NetBSD.org>
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  26  * SUCH DAMAGE.
  27  *
  28  */
  29
  30 #include <sys/cdefs.h>
  31 #ifndef lint
  32 __RCSID("$NetBSD: ip.c,v 1.16 2008/04/10 17:14:25 thorpej Exp $");
  33 #endif /* not lint */
  34
  35 #include <sys/param.h>
  36 #include <sys/sysctl.h>
  37
  38 #include <netinet/in.h>
  39 #include <netinet/in_systm.h>
  40 #include <netinet/ip.h>
  41 #include <netinet/ip_var.h>
  42 #include <netinet/udp.h>
  43 #include <netinet/udp_var.h>
  44
  45 #include <string.h>
  46
  47 #include "systat.h"
  48 #include "extern.h"
  49
  50 #define LHD(row, str)           mvwprintw(wnd, row, 10, str)
  51 #define RHD(row, str)           mvwprintw(wnd, row, 45, str);
  52 #define SHOW(stat, row, col) \
  53     mvwprintw(wnd, row, col, "%9llu", (unsigned long long)curstat.stat)
  54
  55 struct mystat {
  56         uint64_t i[IP_NSTATS];
  57         uint64_t u[UDP_NSTATS];
  58 };
  59
  60 enum update {
  61         UPDATE_TIME,
  62         UPDATE_BOOT,
  63         UPDATE_RUN,
  64 };
  65
  66 static enum update update = UPDATE_TIME;
  67 static struct mystat curstat;
  68 static struct mystat oldstat;
  69 static struct mystat newstat;
  70
  71 static struct nlist namelist[] = {
  72         { .n_name = "_ipstat" },
  73         { .n_name = "_udpstat" },
  74         { .n_name = NULL }
  75 };
  76
  77 WINDOW *
  78 openip(void)
  79 {
  80
  81         return (subwin(stdscr, -1, 0, 5, 0));
  82 }
  83
  84 void
  85 closeip(WINDOW *w)
  86 {
  87
  88         if (w != NULL) {
  89                 wclear(w);
  90                 wrefresh(w);
  91                 delwin(w);
  92         }
  93 }
  94
  95 void
  96 labelip(void)
  97 {
  98
  99         wmove(wnd, 0, 0); wclrtoeol(wnd);
 100
 101         LHD(0,  "total packets received");
 102         LHD(1,  "  passed to upper layers");
 103         LHD(2,  "  with bad checksums");
 104         LHD(3,  "  too short for header");
 105         LHD(4,  "  too short for data");
 106         LHD(5,  "  with invalid hlen");
 107         LHD(6,  "  with invalid length");
 108         LHD(7,  "  with invalid version");
 109         LHD(8,  "  too large");
 110         LHD(9,  "  option errors");
 111         LHD(10, "  fragments received");
 112         LHD(11, "  fragments dropped");
 113         LHD(12, "  fragments timed out");
 114         LHD(13, "  packets reassembled ok");
 115
 116         LHD(15, "packets forwarded");
 117         LHD(16, "  fast forwarded");
 118         LHD(17, "  unreachable dests");
 119         LHD(18, "  redirects generated");
 120
 121         RHD(0,  "total packets sent");
 122         RHD(1,  "  generated locally");
 123         RHD(2,  "  output drops");
 124         RHD(3,  "  output fragments generated");
 125         RHD(4,  "  fragmentation failed");
 126         RHD(5,  "  destinations unreachable");
 127         RHD(6,  "  packets output via raw IP");
 128         RHD(7,  "  total UDP packets sent");
 129
 130         RHD(9, "total UDP packets received");
 131         RHD(10, "  too short for header");
 132         RHD(11, "  invalid checksum");
 133         RHD(12, "  invalid length");
 134         RHD(13, "  no socket for dest port");
 135         RHD(14, "  no socket for broadcast");
 136         RHD(15, "  socket buffer full");
 137 }
 138
 139 void
 140 showip(void)
 141 {
 142         u_quad_t totalout;
 143
 144         totalout = curstat.i[IP_STAT_FORWARD] + curstat.i[IP_STAT_LOCALOUT];
 145
 146         SHOW(i[IP_STAT_TOTAL], 0, 0);
 147         mvwprintw(wnd, 0, 35, "%9llu", (unsigned long long)totalout);
 148         SHOW(i[IP_STAT_DELIVERED], 1, 0);
 149         SHOW(i[IP_STAT_BADSUM], 2, 0);
 150         SHOW(i[IP_STAT_TOOSHORT], 3, 0);
 151         SHOW(i[IP_STAT_TOOSMALL], 4, 0);
 152         SHOW(i[IP_STAT_BADHLEN], 5, 0);
 153         SHOW(i[IP_STAT_BADLEN], 6, 0);
 154         SHOW(i[IP_STAT_BADVERS], 7, 0);
 155         SHOW(i[IP_STAT_TOOLONG], 8, 0);
 156         SHOW(i[IP_STAT_BADOPTIONS], 9, 0);
 157
 158         SHOW(i[IP_STAT_LOCALOUT], 1, 35);
 159         SHOW(i[IP_STAT_ODROPPED], 2, 35);
 160         SHOW(i[IP_STAT_OFRAGMENTS], 3, 35);
 161         SHOW(i[IP_STAT_CANTFRAG], 4, 35);
 162         SHOW(i[IP_STAT_NOROUTE], 5, 35);
 163         SHOW(i[IP_STAT_RAWOUT], 6, 35);
 164         SHOW(u[UDP_STAT_OPACKETS], 7, 35);
 165
 166         SHOW(i[IP_STAT_FRAGMENTS], 10, 0);
 167         SHOW(i[IP_STAT_FRAGDROPPED], 11, 0);
 168         SHOW(i[IP_STAT_FRAGTIMEOUT], 12, 0);
 169         SHOW(i[IP_STAT_REASSEMBLED], 13, 0);
 170
 171         SHOW(i[IP_STAT_FORWARD], 15, 0);
 172         SHOW(i[IP_STAT_FASTFORWARD], 16, 0);
 173         SHOW(i[IP_STAT_CANTFORWARD], 17, 0);
 174         SHOW(i[IP_STAT_REDIRECTSENT], 18, 0);
 175
 176         SHOW(u[UDP_STAT_IPACKETS], 9, 35);
 177         SHOW(u[UDP_STAT_HDROPS], 10, 35);
 178         SHOW(u[UDP_STAT_BADSUM], 11, 35);
 179         SHOW(u[UDP_STAT_BADLEN], 12, 35);
 180         SHOW(u[UDP_STAT_NOPORT], 13, 35);
 181         SHOW(u[UDP_STAT_NOPORTBCAST], 14, 35);
 182         SHOW(u[UDP_STAT_FULLSOCK], 15, 35);
 183 }
 184
 185 int
 186 initip(void)
 187 {
 188
 189         if (! use_sysctl) {
 190                 if (namelist[0].n_type == 0) {
 191                         if (kvm_nlist(kd, namelist)) {
 192                                 nlisterr(namelist);
 193                                 return(0);
 194                         }
 195                         if ((namelist[0].n_type | namelist[1].n_type) == 0) {
 196                                 error("No namelist");
 197                                 return(0);
 198                         }
 199                 }
 200         }
 201         return 1;
 202 }
 203
 204 void
 205 fetchip(void)
 206 {
 207
 208         if (use_sysctl) {
 209                 size_t size;
 210
 211                 size = sizeof(newstat.i);
 212                 if (sysctlbyname("net.inet.ip.stats", newstat.i, &size,
 213                                  NULL, 0) == -1)
 214                         return;
 215                 size = sizeof(newstat.u);
 216                 if (sysctlbyname("net.inet.udp.stats", newstat.u, &size,
 217                                  NULL, 0) == -1)
 218                         return;
 219         } else {
 220                 KREAD((void *)namelist[0].n_value, newstat.i,
 221                     sizeof(newstat.i));
 222                 KREAD((void *)namelist[1].n_value, newstat.u,
 223                     sizeof(newstat.u));
 224         }
 225
 226         ADJINETCTR(curstat, oldstat, newstat, i[IP_STAT_TOTAL]);
 227         ADJINETCTR(curstat, oldstat, newstat, i[IP_STAT_DELIVERED]);
 228         ADJINETCTR(curstat, oldstat, newstat, i[IP_STAT_BADSUM]);
 229         ADJINETCTR(curstat, oldstat, newstat, i[IP_STAT_TOOSHORT]);
 230         ADJINETCTR(curstat, oldstat, newstat, i[IP_STAT_TOOSMALL]);
 231         ADJINETCTR(curstat, oldstat, newstat, i[IP_STAT_BADHLEN]);
 232         ADJINETCTR(curstat, oldstat, newstat, i[IP_STAT_BADLEN]);
 233         ADJINETCTR(curstat, oldstat, newstat, i[IP_STAT_BADVERS]);
 234         ADJINETCTR(curstat, oldstat, newstat, i[IP_STAT_TOOLONG]);
 235         ADJINETCTR(curstat, oldstat, newstat, i[IP_STAT_BADOPTIONS]);
 236         ADJINETCTR(curstat, oldstat, newstat, i[IP_STAT_LOCALOUT]);
 237         ADJINETCTR(curstat, oldstat, newstat, i[IP_STAT_ODROPPED]);
 238         ADJINETCTR(curstat, oldstat, newstat, i[IP_STAT_OFRAGMENTS]);
 239         ADJINETCTR(curstat, oldstat, newstat, i[IP_STAT_CANTFRAG]);
 240         ADJINETCTR(curstat, oldstat, newstat, i[IP_STAT_NOROUTE]);
 241         ADJINETCTR(curstat, oldstat, newstat, i[IP_STAT_RAWOUT]);
 242         ADJINETCTR(curstat, oldstat, newstat, i[IP_STAT_FRAGMENTS]);
 243         ADJINETCTR(curstat, oldstat, newstat, i[IP_STAT_FRAGDROPPED]);
 244         ADJINETCTR(curstat, oldstat, newstat, i[IP_STAT_FRAGTIMEOUT]);
 245         ADJINETCTR(curstat, oldstat, newstat, i[IP_STAT_REASSEMBLED]);
 246         ADJINETCTR(curstat, oldstat, newstat, i[IP_STAT_FORWARD]);
 247         ADJINETCTR(curstat, oldstat, newstat, i[IP_STAT_FASTFORWARD]);
 248         ADJINETCTR(curstat, oldstat, newstat, i[IP_STAT_CANTFORWARD]);
 249         ADJINETCTR(curstat, oldstat, newstat, i[IP_STAT_REDIRECTSENT]);
 250         ADJINETCTR(curstat, oldstat, newstat, u[UDP_STAT_OPACKETS]);
 251         ADJINETCTR(curstat, oldstat, newstat, u[UDP_STAT_IPACKETS]);
 252         ADJINETCTR(curstat, oldstat, newstat, u[UDP_STAT_HDROPS]);
 253         ADJINETCTR(curstat, oldstat, newstat, u[UDP_STAT_BADSUM]);
 254         ADJINETCTR(curstat, oldstat, newstat, u[UDP_STAT_BADLEN]);
 255         ADJINETCTR(curstat, oldstat, newstat, u[UDP_STAT_NOPORT]);
 256         ADJINETCTR(curstat, oldstat, newstat, u[UDP_STAT_NOPORTBCAST]);
 257         ADJINETCTR(curstat, oldstat, newstat, u[UDP_STAT_FULLSOCK]);
 258
 259         if (update == UPDATE_TIME)
 260                 memcpy(&oldstat, &newstat, sizeof(oldstat));
 261 }
 262
 263 void
 264 ip_boot(char *args)
 265 {
 266
 267         memset(&oldstat, 0, sizeof(oldstat));
 268         update = UPDATE_BOOT;
 269 }
 270
 271 void
 272 ip_run(char *args)
 273 {
 274
 275         if (update != UPDATE_RUN) {
 276                 memcpy(&oldstat, &newstat, sizeof(oldstat));
 277                 update = UPDATE_RUN;
 278         }
 279 }
 280
 281 void
 282 ip_time(char *args)
 283 {
 284
 285         if (update != UPDATE_TIME) {
 286                 memcpy(&oldstat, &newstat, sizeof(oldstat));
 287                 update = UPDATE_TIME;
 288         }
 289 }
 290
 291 void
 292 ip_zero(char *args)
 293 {
 294
 295         if (update == UPDATE_RUN)
 296                 memcpy(&oldstat, &newstat, sizeof(oldstat));
 297 }