slirp/debug.c

   1 /*
   2  * Copyright (c) 1995 Danny Gasparovski.
   3  * Portions copyright (c) 2000 Kelly Price.
   4  *
   5  * Please read the file COPYRIGHT for the
   6  * terms and conditions of the copyright.
   7  */
   8
   9 #include <slirp.h>
  10
  11 FILE *dfd = NULL;
  12 #ifdef DEBUG
  13 int dostats = 1;
  14 #else
  15 int dostats = 0;
  16 #endif
  17 int slirp_debug = 0;
  18
  19 extern char *strerror _P((int));
  20
  21 /* Carry over one item from main.c so that the tty's restored.
  22  * Only done when the tty being used is /dev/tty --RedWolf */
  23 #ifndef CONFIG_QEMU
  24 extern struct termios slirp_tty_settings;
  25 extern int slirp_tty_restore;
  26
  27
  28 void
  29 debug_init(file, dbg)
  30         char *file;
  31         int dbg;
  32 {
  33         /* Close the old debugging file */
  34         if (dfd)
  35            fclose(dfd);
  36
  37         dfd = fopen(file,"w");
  38         if (dfd != NULL) {
  39 #if 0
  40                 fprintf(dfd,"Slirp %s - Debugging Started.\n", SLIRP_VERSION);
  41 #endif
  42                 fprintf(dfd,"Debugging Started level %i.\r\n",dbg);
  43                 fflush(dfd);
  44                 slirp_debug = dbg;
  45         } else {
  46                 lprint("Error: Debugging file \"%s\" could not be opened: %s\r\n",
  47                         file, strerror(errno));
  48         }
  49 }
  50
  51 /*
  52  * Dump a packet in the same format as tcpdump -x
  53  */
  54 #ifdef DEBUG
  55 void
  56 dump_packet(dat, n)
  57         void *dat;
  58         int n;
  59 {
  60         u_char *pptr = (u_char *)dat;
  61         int j,k;
  62
  63         n /= 16;
  64         n++;
  65         DEBUG_MISC((dfd, "PACKET DUMPED: \n"));
  66         for(j = 0; j < n; j++) {
  67                 for(k = 0; k < 6; k++)
  68                         DEBUG_MISC((dfd, "%02x ", *pptr++));
  69                 DEBUG_MISC((dfd, "\n"));
  70                 fflush(dfd);
  71         }
  72 }
  73 #endif
  74 #endif
  75
  76 #ifdef LOG_ENABLED
  77 #if 0
  78 /*
  79  * Statistic routines
  80  *
  81  * These will print statistics to the screen, the debug file (dfd), or
  82  * a buffer, depending on "type", so that the stats can be sent over
  83  * the link as well.
  84  */
  85
  86 static void
  87 ttystats(ttyp)
  88         struct ttys *ttyp;
  89 {
  90         struct slirp_ifstats *is = &ttyp->ifstats;
  91         char buff[512];
  92
  93         lprint(" \r\n");
  94
  95         if (if_comp & IF_COMPRESS)
  96            strcpy(buff, "on");
  97         else if (if_comp & IF_NOCOMPRESS)
  98            strcpy(buff, "off");
  99         else
 100            strcpy(buff, "off (for now)");
 101         lprint("Unit %d:\r\n", ttyp->unit);
 102         lprint("  using %s encapsulation (VJ compression is %s)\r\n", (
 103 #ifdef USE_PPP
 104                ttyp->proto==PROTO_PPP?"PPP":
 105 #endif
 106                "SLIP"), buff);
 107         lprint("  %d baudrate\r\n", ttyp->baud);
 108         lprint("  interface is %s\r\n", ttyp->up?"up":"down");
 109         lprint("  using fd %d, guardian pid is %d\r\n", ttyp->fd, ttyp->pid);
 110 #ifndef FULL_BOLT
 111         lprint("  towrite is %d bytes\r\n", ttyp->towrite);
 112 #endif
 113         if (ttyp->zeros)
 114            lprint("  %d zeros have been typed\r\n", ttyp->zeros);
 115         else if (ttyp->ones)
 116            lprint("  %d ones have been typed\r\n", ttyp->ones);
 117         lprint("Interface stats:\r\n");
 118         lprint("  %6d output packets sent (%d bytes)\r\n", is->out_pkts, is->out_bytes);
 119         lprint("  %6d output packets dropped (%d bytes)\r\n", is->out_errpkts, is->out_errbytes);
 120         lprint("  %6d input packets received (%d bytes)\r\n", is->in_pkts, is->in_bytes);
 121         lprint("  %6d input packets dropped (%d bytes)\r\n", is->in_errpkts, is->in_errbytes);
 122         lprint("  %6d bad input packets\r\n", is->in_mbad);
 123 }
 124
 125 static void
 126 allttystats(void)
 127 {
 128         struct ttys *ttyp;
 129
 130         for (ttyp = ttys; ttyp; ttyp = ttyp->next)
 131            ttystats(ttyp);
 132 }
 133 #endif
 134
 135 static void
 136 ipstats(void)
 137 {
 138         lprint(" \r\n");
 139
 140         lprint("IP stats:\r\n");
 141         lprint("  %6d total packets received (%d were unaligned)\r\n",
 142                         ipstat.ips_total, ipstat.ips_unaligned);
 143         lprint("  %6d with incorrect version\r\n", ipstat.ips_badvers);
 144         lprint("  %6d with bad header checksum\r\n", ipstat.ips_badsum);
 145         lprint("  %6d with length too short (len < sizeof(iphdr))\r\n", ipstat.ips_tooshort);
 146         lprint("  %6d with length too small (len < ip->len)\r\n", ipstat.ips_toosmall);
 147         lprint("  %6d with bad header length\r\n", ipstat.ips_badhlen);
 148         lprint("  %6d with bad packet length\r\n", ipstat.ips_badlen);
 149         lprint("  %6d fragments received\r\n", ipstat.ips_fragments);
 150         lprint("  %6d fragments dropped\r\n", ipstat.ips_fragdropped);
 151         lprint("  %6d fragments timed out\r\n", ipstat.ips_fragtimeout);
 152         lprint("  %6d packets reassembled ok\r\n", ipstat.ips_reassembled);
 153         lprint("  %6d outgoing packets fragmented\r\n", ipstat.ips_fragmented);
 154         lprint("  %6d total outgoing fragments\r\n", ipstat.ips_ofragments);
 155         lprint("  %6d with bad protocol field\r\n", ipstat.ips_noproto);
 156         lprint("  %6d total packets delivered\r\n", ipstat.ips_delivered);
 157 }
 158
 159 #ifndef CONFIG_QEMU
 160 static void
 161 vjstats(void)
 162 {
 163         lprint(" \r\n");
 164
 165         lprint("VJ compression stats:\r\n");
 166
 167         lprint("  %6d outbound packets (%d compressed)\r\n",
 168                comp_s.sls_packets, comp_s.sls_compressed);
 169         lprint("  %6d searches for connection stats (%d misses)\r\n",
 170                comp_s.sls_searches, comp_s.sls_misses);
 171         lprint("  %6d inbound uncompressed packets\r\n", comp_s.sls_uncompressedin);
 172         lprint("  %6d inbound compressed packets\r\n", comp_s.sls_compressedin);
 173         lprint("  %6d inbound unknown type packets\r\n", comp_s.sls_errorin);
 174         lprint("  %6d inbound packets tossed due to error\r\n", comp_s.sls_tossed);
 175 }
 176 #endif
 177
 178 static void
 179 tcpstats(void)
 180 {
 181         lprint(" \r\n");
 182
 183         lprint("TCP stats:\r\n");
 184
 185         lprint("  %6d packets sent\r\n", tcpstat.tcps_sndtotal);
 186         lprint("          %6d data packets (%d bytes)\r\n",
 187                         tcpstat.tcps_sndpack, tcpstat.tcps_sndbyte);
 188         lprint("          %6d data packets retransmitted (%d bytes)\r\n",
 189                         tcpstat.tcps_sndrexmitpack, tcpstat.tcps_sndrexmitbyte);
 190         lprint("          %6d ack-only packets (%d delayed)\r\n",
 191                         tcpstat.tcps_sndacks, tcpstat.tcps_delack);
 192         lprint("          %6d URG only packets\r\n", tcpstat.tcps_sndurg);
 193         lprint("          %6d window probe packets\r\n", tcpstat.tcps_sndprobe);
 194         lprint("          %6d window update packets\r\n", tcpstat.tcps_sndwinup);
 195         lprint("          %6d control (SYN/FIN/RST) packets\r\n", tcpstat.tcps_sndctrl);
 196         lprint("          %6d times tcp_output did nothing\r\n", tcpstat.tcps_didnuttin);
 197
 198         lprint("  %6d packets received\r\n", tcpstat.tcps_rcvtotal);
 199         lprint("          %6d acks (for %d bytes)\r\n",
 200                         tcpstat.tcps_rcvackpack, tcpstat.tcps_rcvackbyte);
 201         lprint("          %6d duplicate acks\r\n", tcpstat.tcps_rcvdupack);
 202         lprint("          %6d acks for unsent data\r\n", tcpstat.tcps_rcvacktoomuch);
 203         lprint("          %6d packets received in sequence (%d bytes)\r\n",
 204                         tcpstat.tcps_rcvpack, tcpstat.tcps_rcvbyte);
 205         lprint("          %6d completely duplicate packets (%d bytes)\r\n",
 206                         tcpstat.tcps_rcvduppack, tcpstat.tcps_rcvdupbyte);
 207
 208         lprint("          %6d packets with some duplicate data (%d bytes duped)\r\n",
 209                         tcpstat.tcps_rcvpartduppack, tcpstat.tcps_rcvpartdupbyte);
 210         lprint("          %6d out-of-order packets (%d bytes)\r\n",
 211                         tcpstat.tcps_rcvoopack, tcpstat.tcps_rcvoobyte);
 212         lprint("          %6d packets of data after window (%d bytes)\r\n",
 213                         tcpstat.tcps_rcvpackafterwin, tcpstat.tcps_rcvbyteafterwin);
 214         lprint("          %6d window probes\r\n", tcpstat.tcps_rcvwinprobe);
 215         lprint("          %6d window update packets\r\n", tcpstat.tcps_rcvwinupd);
 216         lprint("          %6d packets received after close\r\n", tcpstat.tcps_rcvafterclose);
 217         lprint("          %6d discarded for bad checksums\r\n", tcpstat.tcps_rcvbadsum);
 218         lprint("          %6d discarded for bad header offset fields\r\n",
 219                         tcpstat.tcps_rcvbadoff);
 220
 221         lprint("  %6d connection requests\r\n", tcpstat.tcps_connattempt);
 222         lprint("  %6d connection accepts\r\n", tcpstat.tcps_accepts);
 223         lprint("  %6d connections established (including accepts)\r\n", tcpstat.tcps_connects);
 224         lprint("  %6d connections closed (including %d drop)\r\n",
 225                         tcpstat.tcps_closed, tcpstat.tcps_drops);
 226         lprint("  %6d embryonic connections dropped\r\n", tcpstat.tcps_conndrops);
 227         lprint("  %6d segments we tried to get rtt (%d succeeded)\r\n",
 228                         tcpstat.tcps_segstimed, tcpstat.tcps_rttupdated);
 229         lprint("  %6d retransmit timeouts\r\n", tcpstat.tcps_rexmttimeo);
 230         lprint("          %6d connections dropped by rxmt timeout\r\n",
 231                         tcpstat.tcps_timeoutdrop);
 232         lprint("  %6d persist timeouts\r\n", tcpstat.tcps_persisttimeo);
 233         lprint("  %6d keepalive timeouts\r\n", tcpstat.tcps_keeptimeo);
 234         lprint("          %6d keepalive probes sent\r\n", tcpstat.tcps_keepprobe);
 235         lprint("          %6d connections dropped by keepalive\r\n", tcpstat.tcps_keepdrops);
 236         lprint("  %6d correct ACK header predictions\r\n", tcpstat.tcps_predack);
 237         lprint("  %6d correct data packet header predictions\n", tcpstat.tcps_preddat);
 238         lprint("  %6d TCP cache misses\r\n", tcpstat.tcps_socachemiss);
 239
 240
 241 /*      lprint("    Packets received too short:         %d\r\n", tcpstat.tcps_rcvshort); */
 242 /*      lprint("    Segments dropped due to PAWS:       %d\r\n", tcpstat.tcps_pawsdrop); */
 243
 244 }
 245
 246 static void
 247 udpstats(void)
 248 {
 249         lprint(" \r\n");
 250
 251         lprint("UDP stats:\r\n");
 252         lprint("  %6d datagrams received\r\n", udpstat.udps_ipackets);
 253         lprint("  %6d with packets shorter than header\r\n", udpstat.udps_hdrops);
 254         lprint("  %6d with bad checksums\r\n", udpstat.udps_badsum);
 255         lprint("  %6d with data length larger than packet\r\n", udpstat.udps_badlen);
 256         lprint("  %6d UDP socket cache misses\r\n", udpstat.udpps_pcbcachemiss);
 257         lprint("  %6d datagrams sent\r\n", udpstat.udps_opackets);
 258 }
 259
 260 static void
 261 icmpstats(void)
 262 {
 263         lprint(" \r\n");
 264         lprint("ICMP stats:\r\n");
 265         lprint("  %6d ICMP packets received\r\n", icmpstat.icps_received);
 266         lprint("  %6d were too short\r\n", icmpstat.icps_tooshort);
 267         lprint("  %6d with bad checksums\r\n", icmpstat.icps_checksum);
 268         lprint("  %6d with type not supported\r\n", icmpstat.icps_notsupp);
 269         lprint("  %6d with bad type feilds\r\n", icmpstat.icps_badtype);
 270         lprint("  %6d ICMP packets sent in reply\r\n", icmpstat.icps_reflect);
 271 }
 272
 273 static void
 274 mbufstats(void)
 275 {
 276         struct mbuf *m;
 277         int i;
 278
 279         lprint(" \r\n");
 280
 281         lprint("Mbuf stats:\r\n");
 282
 283         lprint("  %6d mbufs allocated (%d max)\r\n", mbuf_alloced, mbuf_max);
 284
 285         i = 0;
 286         for (m = m_freelist.m_next; m != &m_freelist; m = m->m_next)
 287                 i++;
 288         lprint("  %6d mbufs on free list\r\n",  i);
 289
 290         i = 0;
 291         for (m = m_usedlist.m_next; m != &m_usedlist; m = m->m_next)
 292                 i++;
 293         lprint("  %6d mbufs on used list\r\n",  i);
 294         lprint("  %6d mbufs queued as packets\r\n\r\n", if_queued);
 295 }
 296
 297 static void
 298 sockstats(void)
 299 {
 300         char buff[256];
 301         int n;
 302         struct socket *so;
 303
 304         lprint(" \r\n");
 305
 306         lprint(
 307            "Proto[state]     Sock     Local Address, Port  Remote Address, Port RecvQ SendQ\r\n");
 308
 309         for (so = tcb.so_next; so != &tcb; so = so->so_next) {
 310
 311                 n = sprintf(buff, "tcp[%s]", so->so_tcpcb?tcpstates[so->so_tcpcb->t_state]:"NONE");
 312                 while (n < 17)
 313                    buff[n++] = ' ';
 314                 buff[17] = 0;
 315                 lprint("%s %3d   %15s %5d ",
 316                                 buff, so->s,
 317                                 inet_ntoa(so->so_laddr), ntohs(so->so_lport));
 318                 lprint("%15s %5d %5d %5d\r\n",
 319                                 inet_ntoa(so->so_faddr), ntohs(so->so_fport),
 320                                 so->so_rcv.sb_cc, so->so_snd.sb_cc);
 321         }
 322
 323         for (so = udb.so_next; so != &udb; so = so->so_next) {
 324
 325                 n = sprintf(buff, "udp[%d sec]", (so->so_expire - curtime) / 1000);
 326                 while (n < 17)
 327                    buff[n++] = ' ';
 328                 buff[17] = 0;
 329                 lprint("%s %3d  %15s %5d  ",
 330                                 buff, so->s,
 331                                 inet_ntoa(so->so_laddr), ntohs(so->so_lport));
 332                 lprint("%15s %5d %5d %5d\r\n",
 333                                 inet_ntoa(so->so_faddr), ntohs(so->so_fport),
 334                                 so->so_rcv.sb_cc, so->so_snd.sb_cc);
 335         }
 336 }
 337 #endif
 338
 339 #ifndef CONFIG_QEMU
 340 void
 341 slirp_exit(exit_status)
 342         int exit_status;
 343 {
 344         struct ttys *ttyp;
 345
 346         DEBUG_CALL("slirp_exit");
 347         DEBUG_ARG("exit_status = %d", exit_status);
 348
 349         if (dostats) {
 350                 lprint_print = (int (*) _P((void *, const char *, va_list)))vfprintf;
 351                 if (!dfd)
 352                    debug_init("slirp_stats", 0xf);
 353                 lprint_arg = (char **)&dfd;
 354
 355                 ipstats();
 356                 tcpstats();
 357                 udpstats();
 358                 icmpstats();
 359                 mbufstats();
 360                 sockstats();
 361                 allttystats();
 362                 vjstats();
 363         }
 364
 365         for (ttyp = ttys; ttyp; ttyp = ttyp->next)
 366            tty_detached(ttyp, 1);
 367
 368         if (slirp_forked) {
 369                 /* Menendez time */
 370                 if (kill(getppid(), SIGQUIT) < 0)
 371                         lprint("Couldn't kill parent process %ld!\n",
 372                             (long) getppid());
 373         }
 374
 375         /* Restore the terminal if we gotta */
 376         if(slirp_tty_restore)
 377           tcsetattr(0,TCSANOW, &slirp_tty_settings);  /* NOW DAMMIT! */
 378         exit(exit_status);
 379 }
 380 #endif
 381
 382 void
 383 slirp_stats(void)
 384 {
 385 #ifdef LOG_ENABLED
 386     ipstats();
 387     tcpstats();
 388     udpstats();
 389     icmpstats();
 390     mbufstats();
 391     sockstats();
 392 #else
 393     lprint("SLIRP statistics code not compiled.\n");
 394 #endif
 395 }