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