ip.c revision 330897
1/*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 1980, 1992, 1993 5 * The Regents of the University of California. 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 * 4. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32#include <sys/cdefs.h> 33 34__FBSDID("$FreeBSD: stable/11/usr.bin/systat/ip.c 330897 2018-03-14 03:19:51Z eadler $"); 35 36#ifdef lint 37static const char sccsid[] = "@(#)mbufs.c 8.1 (Berkeley) 6/6/93"; 38#endif 39 40/* From: 41 "Id: mbufs.c,v 1.5 1997/02/24 20:59:03 wollman Exp" 42*/ 43 44#include <sys/param.h> 45#include <sys/types.h> 46#include <sys/socket.h> 47#include <sys/sysctl.h> 48 49#include <netinet/in.h> 50#include <netinet/in_systm.h> 51#include <netinet/ip.h> 52#include <netinet/ip_var.h> 53#include <netinet/udp.h> 54#include <netinet/udp_var.h> 55 56#include <stdlib.h> 57#include <string.h> 58#include <paths.h> 59 60#include "systat.h" 61#include "extern.h" 62#include "mode.h" 63 64struct stat { 65 struct ipstat i; 66 struct udpstat u; 67}; 68 69static struct stat curstat, initstat, oldstat; 70 71/*- 72--0 1 2 3 4 5 6 7 73--0123456789012345678901234567890123456789012345678901234567890123456789012345 7400 IP Input IP Output 7501999999999 total packets received 999999999 total packets sent 7602999999999 - with bad checksums 999999999 - generated locally 7703999999999 - too short for header 999999999 - output drops 7804999999999 - too short for data 999999999 output fragments generated 7905999999999 - with invalid hlen 999999999 - fragmentation failed 8006999999999 - with invalid length 999999999 destinations unreachable 8107999999999 - with invalid version 999999999 packets output via raw IP 8208999999999 - jumbograms 8309999999999 total fragments received UDP Statistics 8410999999999 - fragments dropped 999999999 total input packets 8511999999999 - fragments timed out 999999999 - too short for header 8612999999999 - packets reassembled ok 999999999 - invalid checksum 8713999999999 packets forwarded 999999999 - no checksum 8814999999999 - unreachable dests 999999999 - invalid length 8915999999999 - redirects generated 999999999 - no socket for dest port 9016999999999 option errors 999999999 - no socket for broadcast 9117999999999 unwanted multicasts 999999999 - socket buffer full 9218999999999 delivered to upper layer 999999999 total output packets 93--0123456789012345678901234567890123456789012345678901234567890123456789012345 94--0 1 2 3 4 5 6 7 95*/ 96 97WINDOW * 98openip(void) 99{ 100 return (subwin(stdscr, LINES-3-1, 0, MAINWIN_ROW, 0)); 101} 102 103void 104closeip(WINDOW *w) 105{ 106 if (w == NULL) 107 return; 108 wclear(w); 109 wrefresh(w); 110 delwin(w); 111} 112 113void 114labelip(void) 115{ 116 wmove(wnd, 0, 0); wclrtoeol(wnd); 117#define L(row, str) mvwprintw(wnd, row, 10, str) 118#define R(row, str) mvwprintw(wnd, row, 45, str); 119 L(0, "IP Input"); R(0, "IP Output"); 120 L(1, "total packets received"); R(1, "total packets sent"); 121 L(2, "- with bad checksums"); R(2, "- generated locally"); 122 L(3, "- too short for header"); R(3, "- output drops"); 123 L(4, "- too short for data"); R(4, "output fragments generated"); 124 L(5, "- with invalid hlen"); R(5, "- fragmentation failed"); 125 L(6, "- with invalid length"); R(6, "destinations unreachable"); 126 L(7, "- with invalid version"); R(7, "packets output via raw IP"); 127 L(8, "- jumbograms"); 128 L(9, "total fragments received"); R(9, "UDP Statistics"); 129 L(10, "- fragments dropped"); R(10, "total input packets"); 130 L(11, "- fragments timed out"); R(11, "- too short for header"); 131 L(12, "- packets reassembled ok"); R(12, "- invalid checksum"); 132 L(13, "packets forwarded"); R(13, "- no checksum"); 133 L(14, "- unreachable dests"); R(14, "- invalid length"); 134 L(15, "- redirects generated"); R(15, "- no socket for dest port"); 135 L(16, "option errors"); R(16, "- no socket for broadcast"); 136 L(17, "unwanted multicasts"); R(17, "- socket buffer full"); 137 L(18, "delivered to upper layer"); R(18, "total output packets"); 138#undef L 139#undef R 140} 141 142static void 143domode(struct stat *ret) 144{ 145 const struct stat *sub; 146 int divisor = 1; 147 148 switch(currentmode) { 149 case display_RATE: 150 sub = &oldstat; 151 divisor = (delay > 1000000) ? delay / 1000000 : 1; 152 break; 153 case display_DELTA: 154 sub = &oldstat; 155 break; 156 case display_SINCE: 157 sub = &initstat; 158 break; 159 default: 160 *ret = curstat; 161 return; 162 } 163#define DO(stat) ret->stat = (curstat.stat - sub->stat) / divisor 164 DO(i.ips_total); 165 DO(i.ips_badsum); 166 DO(i.ips_tooshort); 167 DO(i.ips_toosmall); 168 DO(i.ips_badhlen); 169 DO(i.ips_badlen); 170 DO(i.ips_fragments); 171 DO(i.ips_fragdropped); 172 DO(i.ips_fragtimeout); 173 DO(i.ips_forward); 174 DO(i.ips_cantforward); 175 DO(i.ips_redirectsent); 176 DO(i.ips_noproto); 177 DO(i.ips_delivered); 178 DO(i.ips_localout); 179 DO(i.ips_odropped); 180 DO(i.ips_reassembled); 181 DO(i.ips_fragmented); 182 DO(i.ips_ofragments); 183 DO(i.ips_cantfrag); 184 DO(i.ips_badoptions); 185 DO(i.ips_noroute); 186 DO(i.ips_badvers); 187 DO(i.ips_rawout); 188 DO(i.ips_toolong); 189 DO(i.ips_notmember); 190 DO(u.udps_ipackets); 191 DO(u.udps_hdrops); 192 DO(u.udps_badsum); 193 DO(u.udps_nosum); 194 DO(u.udps_badlen); 195 DO(u.udps_noport); 196 DO(u.udps_noportbcast); 197 DO(u.udps_fullsock); 198 DO(u.udps_opackets); 199#undef DO 200} 201 202void 203showip(void) 204{ 205 struct stat stats; 206 u_long totalout; 207 208 domode(&stats); 209 totalout = stats.i.ips_forward + stats.i.ips_localout; 210 211#define DO(stat, row, col) \ 212 mvwprintw(wnd, row, col, "%9lu", stats.stat) 213 214 DO(i.ips_total, 1, 0); 215 mvwprintw(wnd, 1, 35, "%9lu", totalout); 216 DO(i.ips_badsum, 2, 0); 217 DO(i.ips_localout, 2, 35); 218 DO(i.ips_tooshort, 3, 0); 219 DO(i.ips_odropped, 3, 35); 220 DO(i.ips_toosmall, 4, 0); 221 DO(i.ips_ofragments, 4, 35); 222 DO(i.ips_badhlen, 5, 0); 223 DO(i.ips_cantfrag, 5, 35); 224 DO(i.ips_badlen, 6, 0); 225 DO(i.ips_noroute, 6, 35); 226 DO(i.ips_badvers, 7, 0); 227 DO(i.ips_rawout, 7, 35); 228 DO(i.ips_toolong, 8, 0); 229 DO(i.ips_fragments, 9, 0); 230 DO(i.ips_fragdropped, 10, 0); 231 DO(u.udps_ipackets, 10, 35); 232 DO(i.ips_fragtimeout, 11, 0); 233 DO(u.udps_hdrops, 11, 35); 234 DO(i.ips_reassembled, 12, 0); 235 DO(u.udps_badsum, 12, 35); 236 DO(i.ips_forward, 13, 0); 237 DO(u.udps_nosum, 13, 35); 238 DO(i.ips_cantforward, 14, 0); 239 DO(u.udps_badlen, 14, 35); 240 DO(i.ips_redirectsent, 15, 0); 241 DO(u.udps_noport, 15, 35); 242 DO(i.ips_badoptions, 16, 0); 243 DO(u.udps_noportbcast, 16, 35); 244 DO(i.ips_notmember, 17, 0); 245 DO(u.udps_fullsock, 17, 35); 246 DO(i.ips_delivered, 18, 0); 247 DO(u.udps_opackets, 18, 35); 248#undef DO 249} 250 251int 252initip(void) 253{ 254 size_t len; 255 int name[4]; 256 257 name[0] = CTL_NET; 258 name[1] = PF_INET; 259 name[2] = IPPROTO_IP; 260 name[3] = IPCTL_STATS; 261 262 len = 0; 263 if (sysctl(name, 4, 0, &len, 0, 0) < 0) { 264 error("sysctl getting ipstat size failed"); 265 return 0; 266 } 267 if (len > sizeof curstat.i) { 268 error("ipstat structure has grown--recompile systat!"); 269 return 0; 270 } 271 if (sysctl(name, 4, &initstat.i, &len, 0, 0) < 0) { 272 error("sysctl getting ipstat failed"); 273 return 0; 274 } 275 name[2] = IPPROTO_UDP; 276 name[3] = UDPCTL_STATS; 277 278 len = 0; 279 if (sysctl(name, 4, 0, &len, 0, 0) < 0) { 280 error("sysctl getting udpstat size failed"); 281 return 0; 282 } 283 if (len > sizeof curstat.u) { 284 error("ipstat structure has grown--recompile systat!"); 285 return 0; 286 } 287 if (sysctl(name, 4, &initstat.u, &len, 0, 0) < 0) { 288 error("sysctl getting udpstat failed"); 289 return 0; 290 } 291 oldstat = initstat; 292 return 1; 293} 294 295void 296resetip(void) 297{ 298 size_t len; 299 int name[4]; 300 301 name[0] = CTL_NET; 302 name[1] = PF_INET; 303 name[2] = IPPROTO_IP; 304 name[3] = IPCTL_STATS; 305 306 len = sizeof initstat.i; 307 if (sysctl(name, 4, &initstat.i, &len, 0, 0) < 0) { 308 error("sysctl getting ipstat failed"); 309 } 310 name[2] = IPPROTO_UDP; 311 name[3] = UDPCTL_STATS; 312 313 len = sizeof initstat.u; 314 if (sysctl(name, 4, &initstat.u, &len, 0, 0) < 0) { 315 error("sysctl getting udpstat failed"); 316 } 317 oldstat = initstat; 318} 319 320void 321fetchip(void) 322{ 323 int name[4]; 324 size_t len; 325 326 oldstat = curstat; 327 name[0] = CTL_NET; 328 name[1] = PF_INET; 329 name[2] = IPPROTO_IP; 330 name[3] = IPCTL_STATS; 331 len = sizeof curstat.i; 332 333 if (sysctl(name, 4, &curstat.i, &len, 0, 0) < 0) 334 return; 335 name[2] = IPPROTO_UDP; 336 name[3] = UDPCTL_STATS; 337 len = sizeof curstat.u; 338 339 if (sysctl(name, 4, &curstat.u, &len, 0, 0) < 0) 340 return; 341} 342