usr.bin/netstat/ns.c

   1 /*
   2  * Copyright (c) 1983, 1988, 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  * @(#)ns.c     8.1 (Berkeley) 6/6/93
  34  * $FreeBSD: src/usr.bin/netstat/ns.c,v 1.1.1.1.14.1 2001/08/10 09:07:09 ru Exp $
  35  * $DragonFly: src/usr.bin/netstat/ns.c,v 1.5 2007/05/17 08:19:02 swildner Exp $
  36  */
  37
  38 #include <sys/param.h>
  39 #include <sys/socket.h>
  40 #include <sys/socketvar.h>
  41 #include <sys/mbuf.h>
  42 #include <sys/protosw.h>
  43
  44 #include <net/route.h>
  45 #include <net/if.h>
  46
  47 #include <netinet/tcp_fsm.h>
  48
  49 #include <netns/ns.h>
  50 #include <netns/ns_pcb.h>
  51 #include <netns/idp.h>
  52 #include <netns/idp_var.h>
  53 #include <netns/ns_error.h>
  54 #include <netns/sp.h>
  55 #include <netns/spidp.h>
  56 #include <netns/spp_timer.h>
  57 #include <netns/spp_var.h>
  58 #define SANAMES
  59 #include <netns/spp_debug.h>
  60
  61 #include <nlist.h>
  62 #include <errno.h>
  63 #include <stdio.h>
  64 #include <string.h>
  65 #include "netstat.h"
  66
  67 struct  nspcb nspcb;
  68 struct  sppcb sppcb;
  69 struct  socket sockb;
  70
  71 static char *ns_prpr (struct ns_addr *);
  72 static void ns_erputil (int, int);
  73
  74 static  int first = 1;
  75
  76 /*
  77  * Print a summary of connections related to a Network Systems
  78  * protocol.  For SPP, also give state of connection.
  79  * Listening processes (aflag) are suppressed unless the
  80  * -a (all) flag is specified.
  81  */
  82
  83 void
  84 nsprotopr(u_long off, char *name, int af __unused)
  85 {
  86         struct nspcb cb;
  87         struct nspcb *prev, *next;
  88         int isspp;
  89
  90         if (off == 0)
  91                 return;
  92         isspp = strcmp(name, "spp") == 0;
  93         kread(off, (char *)&cb, sizeof (struct nspcb));
  94         nspcb = cb;
  95         prev = (struct nspcb *)off;
  96         if (nspcb.nsp_next == (struct nspcb *)off)
  97                 return;
  98         for (;nspcb.nsp_next != (struct nspcb *)off; prev = next) {
  99                 u_long ppcb;
 100
 101                 next = nspcb.nsp_next;
 102                 kread((u_long)next, (char *)&nspcb, sizeof (nspcb));
 103                 if (nspcb.nsp_prev != prev) {
 104                         printf("???\n");
 105                         break;
 106                 }
 107                 if (!aflag && ns_nullhost(nspcb.nsp_faddr) ) {
 108                         continue;
 109                 }
 110                 kread((u_long)nspcb.nsp_socket,
 111                                 (char *)&sockb, sizeof (sockb));
 112                 ppcb = (u_long) nspcb.nsp_pcb;
 113                 if (ppcb) {
 114                         if (isspp) {
 115                                 kread(ppcb, (char *)&sppcb, sizeof (sppcb));
 116                         } else continue;
 117                 } else
 118                         if (isspp) continue;
 119                 if (first) {
 120                         printf("Active NS connections");
 121                         if (aflag)
 122                                 printf(" (including servers)");
 123                         putchar('\n');
 124                         if (Aflag)
 125                                 printf("%-8.8s ", "PCB");
 126                         printf(Aflag ?
 127                                 "%-5.5s %-6.6s %-6.6s  %-18.18s %-18.18s %s\n" :
 128                                 "%-5.5s %-6.6s %-6.6s  %-22.22s %-22.22s %s\n",
 129                                 "Proto", "Recv-Q", "Send-Q",
 130                                 "Local Address", "Foreign Address", "(state)");
 131                         first = 0;
 132                 }
 133                 if (Aflag)
 134                         printf("%8x ", ppcb);
 135                 printf("%-5.5s %6d %6d ", name, sockb.so_rcv.ssb_cc,
 136                         sockb.so_snd.ssb_cc);
 137                 printf("  %-22.22s", ns_prpr(&nspcb.nsp_laddr));
 138                 printf(" %-22.22s", ns_prpr(&nspcb.nsp_faddr));
 139                 if (isspp) {
 140                         extern char *tcpstates[];
 141                         if (sppcb.s_state >= TCP_NSTATES)
 142                                 printf(" %d", sppcb.s_state);
 143                         else
 144                                 printf(" %s", tcpstates[sppcb.s_state]);
 145                 }
 146                 putchar('\n');
 147                 prev = next;
 148         }
 149 }
 150 #define ANY(x,y,z) \
 151         ((x) ? printf("\t%d %s%s%s -- %s\n",x,y,plural(x),z,"x") : 0)
 152
 153 /*
 154  * Dump SPP statistics structure.
 155  */
 156 void
 157 spp_stats(u_long off, char *name, int af __unused)
 158 {
 159         struct spp_istat spp_istat;
 160 #define sppstat spp_istat.newstats
 161
 162         if (off == 0)
 163                 return;
 164         kread(off, (char *)&spp_istat, sizeof (spp_istat));
 165         printf("%s:\n", name);
 166         ANY(spp_istat.nonucn, "connection", " dropped due to no new sockets ");
 167         ANY(spp_istat.gonawy, "connection", " terminated due to our end dying");
 168         ANY(spp_istat.nonucn, "connection",
 169             " dropped due to inability to connect");
 170         ANY(spp_istat.noconn, "connection",
 171             " dropped due to inability to connect");
 172         ANY(spp_istat.notme, "connection",
 173             " incompleted due to mismatched id's");
 174         ANY(spp_istat.wrncon, "connection", " dropped due to mismatched id's");
 175         ANY(spp_istat.bdreas, "packet", " dropped out of sequence");
 176         ANY(spp_istat.lstdup, "packet", " duplicating the highest packet");
 177         ANY(spp_istat.notyet, "packet", " refused as exceeding allocation");
 178         ANY(sppstat.spps_connattempt, "connection", " initiated");
 179         ANY(sppstat.spps_accepts, "connection", " accepted");
 180         ANY(sppstat.spps_connects, "connection", " established");
 181         ANY(sppstat.spps_drops, "connection", " dropped");
 182         ANY(sppstat.spps_conndrops, "embryonic connection", " dropped");
 183         ANY(sppstat.spps_closed, "connection", " closed (includes drops)");
 184         ANY(sppstat.spps_segstimed, "packet", " where we tried to get rtt");
 185         ANY(sppstat.spps_rttupdated, "time", " we got rtt");
 186         ANY(sppstat.spps_delack, "delayed ack", " sent");
 187         ANY(sppstat.spps_timeoutdrop, "connection", " dropped in rxmt timeout");
 188         ANY(sppstat.spps_rexmttimeo, "retransmit timeout", "");
 189         ANY(sppstat.spps_persisttimeo, "persist timeout", "");
 190         ANY(sppstat.spps_keeptimeo, "keepalive timeout", "");
 191         ANY(sppstat.spps_keepprobe, "keepalive probe", " sent");
 192         ANY(sppstat.spps_keepdrops, "connection", " dropped in keepalive");
 193         ANY(sppstat.spps_sndtotal, "total packet", " sent");
 194         ANY(sppstat.spps_sndpack, "data packet", " sent");
 195         ANY(sppstat.spps_sndbyte, "data byte", " sent");
 196         ANY(sppstat.spps_sndrexmitpack, "data packet", " retransmitted");
 197         ANY(sppstat.spps_sndrexmitbyte, "data byte", " retransmitted");
 198         ANY(sppstat.spps_sndacks, "ack-only packet", " sent");
 199         ANY(sppstat.spps_sndprobe, "window probe", " sent");
 200         ANY(sppstat.spps_sndurg, "packet", " sent with URG only");
 201         ANY(sppstat.spps_sndwinup, "window update-only packet", " sent");
 202         ANY(sppstat.spps_sndctrl, "control (SYN|FIN|RST) packet", " sent");
 203         ANY(sppstat.spps_sndvoid, "request", " to send a non-existent packet");
 204         ANY(sppstat.spps_rcvtotal, "total packet", " received");
 205         ANY(sppstat.spps_rcvpack, "packet", " received in sequence");
 206         ANY(sppstat.spps_rcvbyte, "byte", " received in sequence");
 207         ANY(sppstat.spps_rcvbadsum, "packet", " received with ccksum errs");
 208         ANY(sppstat.spps_rcvbadoff, "packet", " received with bad offset");
 209         ANY(sppstat.spps_rcvshort, "packet", " received too short");
 210         ANY(sppstat.spps_rcvduppack, "duplicate-only packet", " received");
 211         ANY(sppstat.spps_rcvdupbyte, "duplicate-only byte", " received");
 212         ANY(sppstat.spps_rcvpartduppack, "packet", " with some duplicate data");
 213         ANY(sppstat.spps_rcvpartdupbyte, "dup. byte", " in part-dup. packet");
 214         ANY(sppstat.spps_rcvoopack, "out-of-order packet", " received");
 215         ANY(sppstat.spps_rcvoobyte, "out-of-order byte", " received");
 216         ANY(sppstat.spps_rcvpackafterwin, "packet", " with data after window");
 217         ANY(sppstat.spps_rcvbyteafterwin, "byte", " rcvd after window");
 218         ANY(sppstat.spps_rcvafterclose, "packet", " rcvd after 'close'");
 219         ANY(sppstat.spps_rcvwinprobe, "rcvd window probe packet", "");
 220         ANY(sppstat.spps_rcvdupack, "rcvd duplicate ack", "");
 221         ANY(sppstat.spps_rcvacktoomuch, "rcvd ack", " for unsent data");
 222         ANY(sppstat.spps_rcvackpack, "rcvd ack packet", "");
 223         ANY(sppstat.spps_rcvackbyte, "byte", " acked by rcvd acks");
 224         ANY(sppstat.spps_rcvwinupd, "rcvd window update packet", "");
 225 }
 226 #undef ANY
 227 #define ANY(x,y,z)  ((x) ? printf("\t%d %s%s%s\n",x,y,plural(x),z) : 0)
 228
 229 /*
 230  * Dump IDP statistics structure.
 231  */
 232 void
 233 idp_stats(u_long off, char *name, int af __unused)
 234 {
 235         struct idpstat idpstat;
 236
 237         if (off == 0)
 238                 return;
 239         kread(off, (char *)&idpstat, sizeof (idpstat));
 240         printf("%s:\n", name);
 241         ANY(idpstat.idps_toosmall, "packet", " smaller than a header");
 242         ANY(idpstat.idps_tooshort, "packet", " smaller than advertised");
 243         ANY(idpstat.idps_badsum, "packet", " with bad checksums");
 244 }
 245
 246 static  struct {
 247         u_short code;
 248         char *name;
 249         char *where;
 250 } ns_errnames[] = {
 251         {0, "Unspecified Error", " at Destination"},
 252         {1, "Bad Checksum", " at Destination"},
 253         {2, "No Listener", " at Socket"},
 254         {3, "Packet", " Refused due to lack of space at Destination"},
 255         {01000, "Unspecified Error", " while gatewayed"},
 256         {01001, "Bad Checksum", " while gatewayed"},
 257         {01002, "Packet", " forwarded too many times"},
 258         {01003, "Packet", " too large to be forwarded"},
 259         {-1, 0, 0},
 260 };
 261
 262 /*
 263  * Dump NS Error statistics structure.
 264  */
 265 /*ARGSUSED*/
 266 void
 267 nserr_stats(u_long off, char *name, int af __unused)
 268 {
 269         struct ns_errstat ns_errstat;
 270         int j;
 271         int histoprint = 1;
 272         int z;
 273
 274         if (off == 0)
 275                 return;
 276         kread(off, (char *)&ns_errstat, sizeof (ns_errstat));
 277         printf("NS error statistics:\n");
 278         ANY(ns_errstat.ns_es_error, "call", " to ns_error");
 279         ANY(ns_errstat.ns_es_oldshort, "error",
 280                 " ignored due to insufficient addressing");
 281         ANY(ns_errstat.ns_es_oldns_err, "error request",
 282                 " in response to error packets");
 283         ANY(ns_errstat.ns_es_tooshort, "error packet",
 284                 " received incomplete");
 285         ANY(ns_errstat.ns_es_badcode, "error packet",
 286                 " received of unknown type");
 287         for(j = 0; j < NS_ERR_MAX; j ++) {
 288                 z = ns_errstat.ns_es_outhist[j];
 289                 if (z && histoprint) {
 290                         printf("Output Error Histogram:\n");
 291                         histoprint = 0;
 292                 }
 293                 ns_erputil(z, ns_errstat.ns_es_codes[j]);
 294
 295         }
 296         histoprint = 1;
 297         for(j = 0; j < NS_ERR_MAX; j ++) {
 298                 z = ns_errstat.ns_es_inhist[j];
 299                 if (z && histoprint) {
 300                         printf("Input Error Histogram:\n");
 301                         histoprint = 0;
 302                 }
 303                 ns_erputil(z, ns_errstat.ns_es_codes[j]);
 304         }
 305 }
 306
 307 static void
 308 ns_erputil(int z, int c)
 309 {
 310         int j;
 311         char codebuf[30];
 312         char *name, *where;
 313
 314         for(j = 0;; j ++) {
 315                 if ((name = ns_errnames[j].name) == 0)
 316                         break;
 317                 if (ns_errnames[j].code == c)
 318                         break;
 319         }
 320         if (name == 0)  {
 321                 if (c > 01000)
 322                         where = "in transit";
 323                 else
 324                         where = "at destination";
 325                 sprintf(codebuf, "Unknown XNS error code 0%o", c);
 326                 name = codebuf;
 327         } else
 328                 where =  ns_errnames[j].where;
 329         ANY(z, name, where);
 330 }
 331
 332 static struct sockaddr_ns ssns = {AF_NS};
 333
 334 static
 335 char *ns_prpr(struct ns_addr *x)
 336 {
 337         struct sockaddr_ns *sns = &ssns;
 338
 339         sns->sns_addr = *x;
 340         return(ns_print((struct sockaddr *)sns));
 341 }