net.c

   1 /*
   2  * QEMU System Emulator
   3  *
   4  * Copyright (c) 2003-2008 Fabrice Bellard
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a copy
   7  * of this software and associated documentation files (the "Software"), to deal
   8  * in the Software without restriction, including without limitation the rights
   9  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  10  * copies of the Software, and to permit persons to whom the Software is
  11  * furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included in
  14  * all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  22  * THE SOFTWARE.
  23  */
  24 #include <unistd.h>
  25 #include <fcntl.h>
  26 #include <signal.h>
  27 #include <time.h>
  28 #include <errno.h>
  29 #include <sys/time.h>
  30 #include <zlib.h>
  31
  32 /* Needed early for HOST_BSD etc. */
  33 #include "config-host.h"
  34
  35 #ifndef _WIN32
  36 #include <sys/times.h>
  37 #include <sys/wait.h>
  38 #include <termios.h>
  39 #include <sys/mman.h>
  40 #include <sys/ioctl.h>
  41 #include <sys/resource.h>
  42 #include <sys/socket.h>
  43 #include <netinet/in.h>
  44 #include <net/if.h>
  45 #ifdef __NetBSD__
  46 #include <net/if_tap.h>
  47 #endif
  48 #ifdef __linux__
  49 #include <linux/if_tun.h>
  50 #endif
  51 #include <arpa/inet.h>
  52 #include <dirent.h>
  53 #include <netdb.h>
  54 #include <sys/select.h>
  55 #ifdef HOST_BSD
  56 #include <sys/stat.h>
  57 #if defined(__FreeBSD__) || defined(__DragonFly__)
  58 #include <libutil.h>
  59 #else
  60 #include <util.h>
  61 #endif
  62 #elif defined (__GLIBC__) && defined (__FreeBSD_kernel__)
  63 #include <freebsd/stdlib.h>
  64 #else
  65 #ifdef __linux__
  66 #include <pty.h>
  67 #include <malloc.h>
  68 #include <linux/rtc.h>
  69
  70 /* For the benefit of older linux systems which don't supply it,
  71    we use a local copy of hpet.h. */
  72 /* #include <linux/hpet.h> */
  73 #include "hpet.h"
  74
  75 #include <linux/ppdev.h>
  76 #include <linux/parport.h>
  77 #endif
  78 #ifdef __sun__
  79 #include <sys/stat.h>
  80 #include <sys/ethernet.h>
  81 #include <sys/sockio.h>
  82 #include <netinet/arp.h>
  83 #include <netinet/in.h>
  84 #include <netinet/in_systm.h>
  85 #include <netinet/ip.h>
  86 #include <netinet/ip_icmp.h> // must come after ip.h
  87 #include <netinet/udp.h>
  88 #include <netinet/tcp.h>
  89 #include <net/if.h>
  90 #include <syslog.h>
  91 #include <stropts.h>
  92 #endif
  93 #endif
  94 #endif
  95
  96 #if defined(__OpenBSD__)
  97 #include <util.h>
  98 #endif
  99
 100 #if defined(CONFIG_VDE)
 101 #include <libvdeplug.h>
 102 #endif
 103
 104 #ifdef _WIN32
 105 #include <windows.h>
 106 #include <malloc.h>
 107 #include <sys/timeb.h>
 108 #include <mmsystem.h>
 109 #define getopt_long_only getopt_long
 110 #define memalign(align, size) malloc(size)
 111 #endif
 112
 113 #include "qemu-common.h"
 114 #include "net.h"
 115 #include "monitor.h"
 116 #include "sysemu.h"
 117 #include "qemu-timer.h"
 118 #include "qemu-char.h"
 119 #include "audio/audio.h"
 120 #include "qemu_socket.h"
 121 #include "qemu-log.h"
 122
 123 #if defined(CONFIG_SLIRP)
 124 #include "libslirp.h"
 125 #endif
 126
 127
 128 static VLANState *first_vlan;
 129
 130 /***********************************************************/
 131 /* network device redirectors */
 132
 133 #if defined(DEBUG_NET) || defined(DEBUG_SLIRP)
 134 static void hex_dump(FILE *f, const uint8_t *buf, int size)
 135 {
 136     int len, i, j, c;
 137
 138     for(i=0;i<size;i+=16) {
 139         len = size - i;
 140         if (len > 16)
 141             len = 16;
 142         fprintf(f, "%08x ", i);
 143         for(j=0;j<16;j++) {
 144             if (j < len)
 145                 fprintf(f, " %02x", buf[i+j]);
 146             else
 147                 fprintf(f, "   ");
 148         }
 149         fprintf(f, " ");
 150         for(j=0;j<len;j++) {
 151             c = buf[i+j];
 152             if (c < ' ' || c > '~')
 153                 c = '.';
 154             fprintf(f, "%c", c);
 155         }
 156         fprintf(f, "\n");
 157     }
 158 }
 159 #endif
 160
 161 static int parse_macaddr(uint8_t *macaddr, const char *p)
 162 {
 163     int i;
 164     char *last_char;
 165     long int offset;
 166
 167     errno = 0;
 168     offset = strtol(p, &last_char, 0);
 169     if (0 == errno && '\0' == *last_char &&
 170             offset >= 0 && offset <= 0xFFFFFF) {
 171         macaddr[3] = (offset & 0xFF0000) >> 16;
 172         macaddr[4] = (offset & 0xFF00) >> 8;
 173         macaddr[5] = offset & 0xFF;
 174         return 0;
 175     } else {
 176         for(i = 0; i < 6; i++) {
 177             macaddr[i] = strtol(p, (char **)&p, 16);
 178             if (i == 5) {
 179                 if (*p != '\0')
 180                     return -1;
 181             } else {
 182                 if (*p != ':' && *p != '-')
 183                     return -1;
 184                 p++;
 185             }
 186         }
 187         return 0;
 188     }
 189
 190     return -1;
 191 }
 192
 193 static int get_str_sep(char *buf, int buf_size, const char **pp, int sep)
 194 {
 195     const char *p, *p1;
 196     int len;
 197     p = *pp;
 198     p1 = strchr(p, sep);
 199     if (!p1)
 200         return -1;
 201     len = p1 - p;
 202     p1++;
 203     if (buf_size > 0) {
 204         if (len > buf_size - 1)
 205             len = buf_size - 1;
 206         memcpy(buf, p, len);
 207         buf[len] = '\0';
 208     }
 209     *pp = p1;
 210     return 0;
 211 }
 212
 213 int parse_host_src_port(struct sockaddr_in *haddr,
 214                         struct sockaddr_in *saddr,
 215                         const char *input_str)
 216 {
 217     char *str = strdup(input_str);
 218     char *host_str = str;
 219     char *src_str;
 220     const char *src_str2;
 221     char *ptr;
 222
 223     /*
 224      * Chop off any extra arguments at the end of the string which
 225      * would start with a comma, then fill in the src port information
 226      * if it was provided else use the "any address" and "any port".
 227      */
 228     if ((ptr = strchr(str,',')))
 229         *ptr = '\0';
 230
 231     if ((src_str = strchr(input_str,'@'))) {
 232         *src_str = '\0';
 233         src_str++;
 234     }
 235
 236     if (parse_host_port(haddr, host_str) < 0)
 237         goto fail;
 238
 239     src_str2 = src_str;
 240     if (!src_str || *src_str == '\0')
 241         src_str2 = ":0";
 242
 243     if (parse_host_port(saddr, src_str2) < 0)
 244         goto fail;
 245
 246     free(str);
 247     return(0);
 248
 249 fail:
 250     free(str);
 251     return -1;
 252 }
 253
 254 int parse_host_port(struct sockaddr_in *saddr, const char *str)
 255 {
 256     char buf[512];
 257     struct hostent *he;
 258     const char *p, *r;
 259     int port;
 260
 261     p = str;
 262     if (get_str_sep(buf, sizeof(buf), &p, ':') < 0)
 263         return -1;
 264     saddr->sin_family = AF_INET;
 265     if (buf[0] == '\0') {
 266         saddr->sin_addr.s_addr = 0;
 267     } else {
 268         if (qemu_isdigit(buf[0])) {
 269             if (!inet_aton(buf, &saddr->sin_addr))
 270                 return -1;
 271         } else {
 272             if ((he = gethostbyname(buf)) == NULL)
 273                 return - 1;
 274             saddr->sin_addr = *(struct in_addr *)he->h_addr;
 275         }
 276     }
 277     port = strtol(p, (char **)&r, 0);
 278     if (r == p)
 279         return -1;
 280     saddr->sin_port = htons(port);
 281     return 0;
 282 }
 283
 284 #if !defined(_WIN32) && 0
 285 static int parse_unix_path(struct sockaddr_un *uaddr, const char *str)
 286 {
 287     const char *p;
 288     int len;
 289
 290     len = MIN(108, strlen(str));
 291     p = strchr(str, ',');
 292     if (p)
 293         len = MIN(len, p - str);
 294
 295     memset(uaddr, 0, sizeof(*uaddr));
 296
 297     uaddr->sun_family = AF_UNIX;
 298     memcpy(uaddr->sun_path, str, len);
 299
 300     return 0;
 301 }
 302 #endif
 303
 304 void qemu_format_nic_info_str(VLANClientState *vc, uint8_t macaddr[6])
 305 {
 306     snprintf(vc->info_str, sizeof(vc->info_str),
 307              "model=%s,macaddr=%02x:%02x:%02x:%02x:%02x:%02x",
 308              vc->model,
 309              macaddr[0], macaddr[1], macaddr[2],
 310              macaddr[3], macaddr[4], macaddr[5]);
 311 }
 312
 313 static char *assign_name(VLANClientState *vc1, const char *model)
 314 {
 315     VLANState *vlan;
 316     char buf[256];
 317     int id = 0;
 318
 319     for (vlan = first_vlan; vlan; vlan = vlan->next) {
 320         VLANClientState *vc;
 321
 322         for (vc = vlan->first_client; vc; vc = vc->next)
 323             if (vc != vc1 && strcmp(vc->model, model) == 0)
 324                 id++;
 325     }
 326
 327     snprintf(buf, sizeof(buf), "%s.%d", model, id);
 328
 329     return strdup(buf);
 330 }
 331
 332 VLANClientState *qemu_new_vlan_client(VLANState *vlan,
 333                                       const char *model,
 334                                       const char *name,
 335                                       NetCanReceive *can_receive,
 336                                       NetReceive *receive,
 337                                       NetReceiveIOV *receive_iov,
 338                                       NetCleanup *cleanup,
 339                                       void *opaque)
 340 {
 341     VLANClientState *vc, **pvc;
 342     vc = qemu_mallocz(sizeof(VLANClientState));
 343     vc->model = strdup(model);
 344     if (name)
 345         vc->name = strdup(name);
 346     else
 347         vc->name = assign_name(vc, model);
 348     vc->can_receive = can_receive;
 349     vc->receive = receive;
 350     vc->receive_iov = receive_iov;
 351     vc->cleanup = cleanup;
 352     vc->opaque = opaque;
 353     vc->vlan = vlan;
 354
 355     vc->next = NULL;
 356     pvc = &vlan->first_client;
 357     while (*pvc != NULL)
 358         pvc = &(*pvc)->next;
 359     *pvc = vc;
 360     return vc;
 361 }
 362
 363 void qemu_del_vlan_client(VLANClientState *vc)
 364 {
 365     VLANClientState **pvc = &vc->vlan->first_client;
 366
 367     while (*pvc != NULL)
 368         if (*pvc == vc) {
 369             *pvc = vc->next;
 370             if (vc->cleanup) {
 371                 vc->cleanup(vc);
 372             }
 373             free(vc->name);
 374             free(vc->model);
 375             qemu_free(vc);
 376             break;
 377         } else
 378             pvc = &(*pvc)->next;
 379 }
 380
 381 VLANClientState *qemu_find_vlan_client(VLANState *vlan, void *opaque)
 382 {
 383     VLANClientState **pvc = &vlan->first_client;
 384
 385     while (*pvc != NULL)
 386         if ((*pvc)->opaque == opaque)
 387             return *pvc;
 388         else
 389             pvc = &(*pvc)->next;
 390
 391     return NULL;
 392 }
 393
 394 int qemu_can_send_packet(VLANClientState *sender)
 395 {
 396     VLANState *vlan = sender->vlan;
 397     VLANClientState *vc;
 398
 399     for (vc = vlan->first_client; vc != NULL; vc = vc->next) {
 400         if (vc == sender) {
 401             continue;
 402         }
 403
 404         /* no can_receive() handler, they can always receive */
 405         if (!vc->can_receive || vc->can_receive(vc)) {
 406             return 1;
 407         }
 408     }
 409     return 0;
 410 }
 411
 412 static int
 413 qemu_deliver_packet(VLANClientState *sender, const uint8_t *buf, int size)
 414 {
 415     VLANClientState *vc;
 416     int ret = -1;
 417
 418     sender->vlan->delivering = 1;
 419
 420     for (vc = sender->vlan->first_client; vc != NULL; vc = vc->next) {
 421         ssize_t len;
 422
 423         if (vc == sender) {
 424             continue;
 425         }
 426
 427         if (vc->link_down) {
 428             ret = size;
 429             continue;
 430         }
 431
 432         len = vc->receive(vc, buf, size);
 433
 434         ret = (ret >= 0) ? ret : len;
 435     }
 436
 437     sender->vlan->delivering = 0;
 438
 439     return ret;
 440 }
 441
 442 void qemu_purge_queued_packets(VLANClientState *vc)
 443 {
 444     VLANPacket **pp = &vc->vlan->send_queue;
 445
 446     while (*pp != NULL) {
 447         VLANPacket *packet = *pp;
 448
 449         if (packet->sender == vc) {
 450             *pp = packet->next;
 451             qemu_free(packet);
 452         } else {
 453             pp = &packet->next;
 454         }
 455     }
 456 }
 457
 458 void qemu_flush_queued_packets(VLANClientState *vc)
 459 {
 460     VLANPacket *packet;
 461
 462     while ((packet = vc->vlan->send_queue) != NULL) {
 463         int ret;
 464
 465         vc->vlan->send_queue = packet->next;
 466
 467         ret = qemu_deliver_packet(packet->sender, packet->data, packet->size);
 468         if (ret == 0 && packet->sent_cb != NULL) {
 469             packet->next = vc->vlan->send_queue;
 470             vc->vlan->send_queue = packet;
 471             break;
 472         }
 473
 474         if (packet->sent_cb)
 475             packet->sent_cb(packet->sender, ret);
 476
 477         qemu_free(packet);
 478     }
 479 }
 480
 481 static void qemu_enqueue_packet(VLANClientState *sender,
 482                                 const uint8_t *buf, int size,
 483                                 NetPacketSent *sent_cb)
 484 {
 485     VLANPacket *packet;
 486
 487     packet = qemu_malloc(sizeof(VLANPacket) + size);
 488     packet->next = sender->vlan->send_queue;
 489     packet->sender = sender;
 490     packet->size = size;
 491     packet->sent_cb = sent_cb;
 492     memcpy(packet->data, buf, size);
 493     sender->vlan->send_queue = packet;
 494 }
 495
 496 ssize_t qemu_send_packet_async(VLANClientState *sender,
 497                                const uint8_t *buf, int size,
 498                                NetPacketSent *sent_cb)
 499 {
 500     int ret;
 501
 502     if (sender->link_down) {
 503         return size;
 504     }
 505
 506 #ifdef DEBUG_NET
 507     printf("vlan %d send:\n", sender->vlan->id);
 508     hex_dump(stdout, buf, size);
 509 #endif
 510
 511     if (sender->vlan->delivering) {
 512         qemu_enqueue_packet(sender, buf, size, NULL);
 513         return size;
 514     }
 515
 516     ret = qemu_deliver_packet(sender, buf, size);
 517     if (ret == 0 && sent_cb != NULL) {
 518         qemu_enqueue_packet(sender, buf, size, sent_cb);
 519         return 0;
 520     }
 521
 522     qemu_flush_queued_packets(sender);
 523
 524     return ret;
 525 }
 526
 527 void qemu_send_packet(VLANClientState *vc, const uint8_t *buf, int size)
 528 {
 529     qemu_send_packet_async(vc, buf, size, NULL);
 530 }
 531
 532 static ssize_t vc_sendv_compat(VLANClientState *vc, const struct iovec *iov,
 533                                int iovcnt)
 534 {
 535     uint8_t buffer[4096];
 536     size_t offset = 0;
 537     int i;
 538
 539     for (i = 0; i < iovcnt; i++) {
 540         size_t len;
 541
 542         len = MIN(sizeof(buffer) - offset, iov[i].iov_len);
 543         memcpy(buffer + offset, iov[i].iov_base, len);
 544         offset += len;
 545     }
 546
 547     return vc->receive(vc, buffer, offset);
 548 }
 549
 550 static ssize_t calc_iov_length(const struct iovec *iov, int iovcnt)
 551 {
 552     size_t offset = 0;
 553     int i;
 554
 555     for (i = 0; i < iovcnt; i++)
 556         offset += iov[i].iov_len;
 557     return offset;
 558 }
 559
 560 static int qemu_deliver_packet_iov(VLANClientState *sender,
 561                                    const struct iovec *iov, int iovcnt)
 562 {
 563     VLANClientState *vc;
 564     int ret = -1;
 565
 566     sender->vlan->delivering = 1;
 567
 568     for (vc = sender->vlan->first_client; vc != NULL; vc = vc->next) {
 569         ssize_t len;
 570
 571         if (vc == sender) {
 572             continue;
 573         }
 574
 575         if (vc->link_down) {
 576             ret = calc_iov_length(iov, iovcnt);
 577             continue;
 578         }
 579
 580         if (vc->receive_iov) {
 581             len = vc->receive_iov(vc, iov, iovcnt);
 582         } else {
 583             len = vc_sendv_compat(vc, iov, iovcnt);
 584         }
 585
 586         ret = (ret >= 0) ? ret : len;
 587     }
 588
 589     sender->vlan->delivering = 0;
 590
 591     return ret;
 592 }
 593
 594 static ssize_t qemu_enqueue_packet_iov(VLANClientState *sender,
 595                                        const struct iovec *iov, int iovcnt,
 596                                        NetPacketSent *sent_cb)
 597 {
 598     VLANPacket *packet;
 599     size_t max_len = 0;
 600     int i;
 601
 602     max_len = calc_iov_length(iov, iovcnt);
 603
 604     packet = qemu_malloc(sizeof(VLANPacket) + max_len);
 605     packet->next = sender->vlan->send_queue;
 606     packet->sender = sender;
 607     packet->sent_cb = sent_cb;
 608     packet->size = 0;
 609
 610     for (i = 0; i < iovcnt; i++) {
 611         size_t len = iov[i].iov_len;
 612
 613         memcpy(packet->data + packet->size, iov[i].iov_base, len);
 614         packet->size += len;
 615     }
 616
 617     sender->vlan->send_queue = packet;
 618
 619     return packet->size;
 620 }
 621
 622 ssize_t qemu_sendv_packet_async(VLANClientState *sender,
 623                                 const struct iovec *iov, int iovcnt,
 624                                 NetPacketSent *sent_cb)
 625 {
 626     int ret;
 627
 628     if (sender->link_down) {
 629         return calc_iov_length(iov, iovcnt);
 630     }
 631
 632     if (sender->vlan->delivering) {
 633         return qemu_enqueue_packet_iov(sender, iov, iovcnt, NULL);
 634     }
 635
 636     ret = qemu_deliver_packet_iov(sender, iov, iovcnt);
 637     if (ret == 0 && sent_cb != NULL) {
 638         qemu_enqueue_packet_iov(sender, iov, iovcnt, sent_cb);
 639         return 0;
 640     }
 641
 642     qemu_flush_queued_packets(sender);
 643
 644     return ret;
 645 }
 646
 647 ssize_t
 648 qemu_sendv_packet(VLANClientState *vc, const struct iovec *iov, int iovcnt)
 649 {
 650     return qemu_sendv_packet_async(vc, iov, iovcnt, NULL);
 651 }
 652
 653 static void config_error(Monitor *mon, const char *fmt, ...)
 654 {
 655     va_list ap;
 656
 657     va_start(ap, fmt);
 658     if (mon) {
 659         monitor_vprintf(mon, fmt, ap);
 660     } else {
 661         fprintf(stderr, "qemu: ");
 662         vfprintf(stderr, fmt, ap);
 663         exit(1);
 664     }
 665     va_end(ap);
 666 }
 667
 668 #if defined(CONFIG_SLIRP)
 669
 670 /* slirp network adapter */
 671
 672 struct slirp_config_str {
 673     struct slirp_config_str *next;
 674     const char *str;
 675 };
 676
 677 static int slirp_inited;
 678 static struct slirp_config_str *slirp_redirs;
 679 #ifndef _WIN32
 680 static const char *slirp_smb_export;
 681 #endif
 682 static VLANClientState *slirp_vc;
 683
 684 #ifndef _WIN32
 685 static void slirp_smb(const char *exported_dir);
 686 #endif
 687 static void slirp_redirection(Monitor *mon, const char *redir_str);
 688
 689 int slirp_can_output(void)
 690 {
 691     return !slirp_vc || qemu_can_send_packet(slirp_vc);
 692 }
 693
 694 void slirp_output(const uint8_t *pkt, int pkt_len)
 695 {
 696 #ifdef DEBUG_SLIRP
 697     printf("slirp output:\n");
 698     hex_dump(stdout, pkt, pkt_len);
 699 #endif
 700     if (!slirp_vc)
 701         return;
 702     qemu_send_packet(slirp_vc, pkt, pkt_len);
 703 }
 704
 705 int slirp_is_inited(void)
 706 {
 707     return slirp_inited;
 708 }
 709
 710 static ssize_t slirp_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
 711 {
 712 #ifdef DEBUG_SLIRP
 713     printf("slirp input:\n");
 714     hex_dump(stdout, buf, size);
 715 #endif
 716     slirp_input(buf, size);
 717     return size;
 718 }
 719
 720 static int slirp_in_use;
 721
 722 static void net_slirp_cleanup(VLANClientState *vc)
 723 {
 724     slirp_in_use = 0;
 725 }
 726
 727 static int net_slirp_init(VLANState *vlan, const char *model, const char *name,
 728                           int restricted, const char *ip)
 729 {
 730     if (slirp_in_use) {
 731         /* slirp only supports a single instance so far */
 732         return -1;
 733     }
 734     if (!slirp_inited) {
 735         slirp_inited = 1;
 736         slirp_init(restricted, ip);
 737
 738         while (slirp_redirs) {
 739             struct slirp_config_str *config = slirp_redirs;
 740
 741             slirp_redirection(NULL, config->str);
 742             slirp_redirs = config->next;
 743             qemu_free(config);
 744         }
 745 #ifndef _WIN32
 746         if (slirp_smb_export) {
 747             slirp_smb(slirp_smb_export);
 748         }
 749 #endif
 750     }
 751
 752     slirp_vc = qemu_new_vlan_client(vlan, model, name, NULL, slirp_receive,
 753                                     NULL, net_slirp_cleanup, NULL);
 754     slirp_vc->info_str[0] = '\0';
 755     slirp_in_use = 1;
 756     return 0;
 757 }
 758
 759 static void net_slirp_redir_rm(Monitor *mon, const char *port_str)
 760 {
 761     int host_port;
 762     char buf[256] = "";
 763     const char *p = port_str;
 764     int is_udp = 0;
 765     int n;
 766
 767     if (!mon)
 768         return;
 769
 770     if (!port_str || !port_str[0])
 771         goto fail_syntax;
 772
 773     get_str_sep(buf, sizeof(buf), &p, ':');
 774
 775     if (!strcmp(buf, "tcp") || buf[0] == '\0') {
 776         is_udp = 0;
 777     } else if (!strcmp(buf, "udp")) {
 778         is_udp = 1;
 779     } else {
 780         goto fail_syntax;
 781     }
 782
 783     host_port = atoi(p);
 784
 785     n = slirp_redir_rm(is_udp, host_port);
 786
 787     monitor_printf(mon, "removed %d redirections to %s port %d\n", n,
 788                         is_udp ? "udp" : "tcp", host_port);
 789     return;
 790
 791  fail_syntax:
 792     monitor_printf(mon, "invalid format\n");
 793 }
 794
 795 static void slirp_redirection(Monitor *mon, const char *redir_str)
 796 {
 797     struct in_addr guest_addr;
 798     int host_port, guest_port;
 799     const char *p;
 800     char buf[256], *r;
 801     int is_udp;
 802
 803     p = redir_str;
 804     if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
 805         goto fail_syntax;
 806     }
 807     if (!strcmp(buf, "tcp") || buf[0] == '\0') {
 808         is_udp = 0;
 809     } else if (!strcmp(buf, "udp")) {
 810         is_udp = 1;
 811     } else {
 812         goto fail_syntax;
 813     }
 814
 815     if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
 816         goto fail_syntax;
 817     }
 818     host_port = strtol(buf, &r, 0);
 819     if (r == buf) {
 820         goto fail_syntax;
 821     }
 822
 823     if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
 824         goto fail_syntax;
 825     }
 826     if (buf[0] == '\0') {
 827         pstrcpy(buf, sizeof(buf), "10.0.2.15");
 828     }
 829     if (!inet_aton(buf, &guest_addr)) {
 830         goto fail_syntax;
 831     }
 832
 833     guest_port = strtol(p, &r, 0);
 834     if (r == p) {
 835         goto fail_syntax;
 836     }
 837
 838     if (slirp_redir(is_udp, host_port, guest_addr, guest_port) < 0) {
 839         config_error(mon, "could not set up redirection '%s'\n", redir_str);
 840     }
 841     return;
 842
 843  fail_syntax:
 844     config_error(mon, "invalid redirection format '%s'\n", redir_str);
 845 }
 846
 847 void net_slirp_redir(Monitor *mon, const char *redir_str, const char *redir_opt2)
 848 {
 849     struct slirp_config_str *config;
 850
 851     if (!slirp_inited) {
 852         if (mon) {
 853             monitor_printf(mon, "user mode network stack not in use\n");
 854         } else {
 855             config = qemu_malloc(sizeof(*config));
 856             config->str = redir_str;
 857             config->next = slirp_redirs;
 858             slirp_redirs = config;
 859         }
 860         return;
 861     }
 862
 863     if (!strcmp(redir_str, "remove")) {
 864         net_slirp_redir_rm(mon, redir_opt2);
 865         return;
 866     }
 867
 868     slirp_redirection(mon, redir_str);
 869 }
 870
 871 #ifndef _WIN32
 872
 873 static char smb_dir[1024];
 874
 875 static void erase_dir(char *dir_name)
 876 {
 877     DIR *d;
 878     struct dirent *de;
 879     char filename[1024];
 880
 881     /* erase all the files in the directory */
 882     if ((d = opendir(dir_name)) != NULL) {
 883         for(;;) {
 884             de = readdir(d);
 885             if (!de)
 886                 break;
 887             if (strcmp(de->d_name, ".") != 0 &&
 888                 strcmp(de->d_name, "..") != 0) {
 889                 snprintf(filename, sizeof(filename), "%s/%s",
 890                          smb_dir, de->d_name);
 891                 if (unlink(filename) != 0)  /* is it a directory? */
 892                     erase_dir(filename);
 893             }
 894         }
 895         closedir(d);
 896         rmdir(dir_name);
 897     }
 898 }
 899
 900 /* automatic user mode samba server configuration */
 901 static void smb_exit(void)
 902 {
 903     erase_dir(smb_dir);
 904 }
 905
 906 static void slirp_smb(const char *exported_dir)
 907 {
 908     char smb_conf[1024];
 909     char smb_cmdline[1024];
 910     FILE *f;
 911
 912     /* XXX: better tmp dir construction */
 913     snprintf(smb_dir, sizeof(smb_dir), "/tmp/qemu-smb.%ld", (long)getpid());
 914     if (mkdir(smb_dir, 0700) < 0) {
 915         fprintf(stderr, "qemu: could not create samba server dir '%s'\n", smb_dir);
 916         exit(1);
 917     }
 918     snprintf(smb_conf, sizeof(smb_conf), "%s/%s", smb_dir, "smb.conf");
 919
 920     f = fopen(smb_conf, "w");
 921     if (!f) {
 922         fprintf(stderr, "qemu: could not create samba server configuration file '%s'\n", smb_conf);
 923         exit(1);
 924     }
 925     fprintf(f,
 926             "[global]\n"
 927             "private dir=%s\n"
 928             "smb ports=0\n"
 929             "socket address=127.0.0.1\n"
 930             "pid directory=%s\n"
 931             "lock directory=%s\n"
 932             "log file=%s/log.smbd\n"
 933             "smb passwd file=%s/smbpasswd\n"
 934             "security = share\n"
 935             "[qemu]\n"
 936             "path=%s\n"
 937             "read only=no\n"
 938             "guest ok=yes\n",
 939             smb_dir,
 940             smb_dir,
 941             smb_dir,
 942             smb_dir,
 943             smb_dir,
 944             exported_dir
 945             );
 946     fclose(f);
 947     atexit(smb_exit);
 948
 949     snprintf(smb_cmdline, sizeof(smb_cmdline), "%s -s %s",
 950              SMBD_COMMAND, smb_conf);
 951
 952     slirp_add_exec(0, smb_cmdline, 4, 139);
 953 }
 954
 955 /* automatic user mode samba server configuration */
 956 void net_slirp_smb(const char *exported_dir)
 957 {
 958     if (slirp_smb_export) {
 959         fprintf(stderr, "-smb given twice\n");
 960         exit(1);
 961     }
 962     slirp_smb_export = exported_dir;
 963     if (slirp_inited) {
 964         slirp_smb(exported_dir);
 965     }
 966 }
 967
 968 #endif /* !defined(_WIN32) */
 969
 970 void do_info_slirp(Monitor *mon)
 971 {
 972     slirp_stats();
 973 }
 974
 975 struct VMChannel {
 976     CharDriverState *hd;
 977     int port;
 978 };
 979
 980 static int vmchannel_can_read(void *opaque)
 981 {
 982     struct VMChannel *vmc = (struct VMChannel*)opaque;
 983     return slirp_socket_can_recv(4, vmc->port);
 984 }
 985
 986 static void vmchannel_read(void *opaque, const uint8_t *buf, int size)
 987 {
 988     struct VMChannel *vmc = (struct VMChannel*)opaque;
 989     slirp_socket_recv(4, vmc->port, buf, size);
 990 }
 991
 992 #endif /* CONFIG_SLIRP */
 993
 994 #if !defined(_WIN32)
 995
 996 typedef struct TAPState {
 997     VLANClientState *vc;
 998     int fd;
 999     char down_script[1024];
1000     char down_script_arg[128];
1001     uint8_t buf[4096];
1002     unsigned int read_poll : 1;
1003     unsigned int write_poll : 1;
1004 } TAPState;
1005
1006 static int launch_script(const char *setup_script, const char *ifname, int fd);
1007
1008 static int tap_can_send(void *opaque);
1009 static void tap_send(void *opaque);
1010 static void tap_writable(void *opaque);
1011
1012 static void tap_update_fd_handler(TAPState *s)
1013 {
1014     qemu_set_fd_handler2(s->fd,
1015                          s->read_poll  ? tap_can_send : NULL,
1016                          s->read_poll  ? tap_send     : NULL,
1017                          s->write_poll ? tap_writable : NULL,
1018                          s);
1019 }
1020
1021 static void tap_read_poll(TAPState *s, int enable)
1022 {
1023     s->read_poll = !!enable;
1024     tap_update_fd_handler(s);
1025 }
1026
1027 static void tap_write_poll(TAPState *s, int enable)
1028 {
1029     s->write_poll = !!enable;
1030     tap_update_fd_handler(s);
1031 }
1032
1033 static void tap_writable(void *opaque)
1034 {
1035     TAPState *s = opaque;
1036
1037     tap_write_poll(s, 0);
1038
1039     qemu_flush_queued_packets(s->vc);
1040 }
1041
1042 static ssize_t tap_receive_iov(VLANClientState *vc, const struct iovec *iov,
1043                                int iovcnt)
1044 {
1045     TAPState *s = vc->opaque;
1046     ssize_t len;
1047
1048     do {
1049         len = writev(s->fd, iov, iovcnt);
1050     } while (len == -1 && errno == EINTR);
1051
1052     if (len == -1 && errno == EAGAIN) {
1053         tap_write_poll(s, 1);
1054         return 0;
1055     }
1056
1057     return len;
1058 }
1059
1060 static ssize_t tap_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
1061 {
1062     TAPState *s = vc->opaque;
1063     ssize_t len;
1064
1065     do {
1066         len = write(s->fd, buf, size);
1067     } while (len == -1 && (errno == EINTR || errno == EAGAIN));
1068
1069     return len;
1070 }
1071
1072 static int tap_can_send(void *opaque)
1073 {
1074     TAPState *s = opaque;
1075
1076     return qemu_can_send_packet(s->vc);
1077 }
1078
1079 #ifdef __sun__
1080 static ssize_t tap_read_packet(int tapfd, uint8_t *buf, int maxlen)
1081 {
1082     struct strbuf sbuf;
1083     int f = 0;
1084
1085     sbuf.maxlen = maxlen;
1086     sbuf.buf = (char *)buf;
1087
1088     return getmsg(tapfd, NULL, &sbuf, &f) >= 0 ? sbuf.len : -1;
1089 }
1090 #else
1091 static ssize_t tap_read_packet(int tapfd, uint8_t *buf, int maxlen)
1092 {
1093     return read(tapfd, buf, maxlen);
1094 }
1095 #endif
1096
1097 static void tap_send_completed(VLANClientState *vc, ssize_t len)
1098 {
1099     TAPState *s = vc->opaque;
1100     tap_read_poll(s, 1);
1101 }
1102
1103 static void tap_send(void *opaque)
1104 {
1105     TAPState *s = opaque;
1106     int size;
1107
1108     do {
1109         size = tap_read_packet(s->fd, s->buf, sizeof(s->buf));
1110         if (size <= 0) {
1111             break;
1112         }
1113
1114         size = qemu_send_packet_async(s->vc, s->buf, size, tap_send_completed);
1115         if (size == 0) {
1116             tap_read_poll(s, 0);
1117         }
1118     } while (size > 0);
1119 }
1120
1121 static void tap_set_sndbuf(TAPState *s, int sndbuf, Monitor *mon)
1122 {
1123 #ifdef TUNSETSNDBUF
1124     if (ioctl(s->fd, TUNSETSNDBUF, &sndbuf) == -1) {
1125         config_error(mon, "TUNSETSNDBUF ioctl failed: %s\n",
1126                      strerror(errno));
1127     }
1128 #else
1129     config_error(mon, "No '-net tap,sndbuf=<nbytes>' support available\n");
1130 #endif
1131 }
1132
1133 static void tap_cleanup(VLANClientState *vc)
1134 {
1135     TAPState *s = vc->opaque;
1136
1137     qemu_purge_queued_packets(vc);
1138
1139     if (s->down_script[0])
1140         launch_script(s->down_script, s->down_script_arg, s->fd);
1141
1142     tap_read_poll(s, 0);
1143     tap_write_poll(s, 0);
1144     close(s->fd);
1145     qemu_free(s);
1146 }
1147
1148 /* fd support */
1149
1150 static TAPState *net_tap_fd_init(VLANState *vlan,
1151                                  const char *model,
1152                                  const char *name,
1153                                  int fd)
1154 {
1155     TAPState *s;
1156
1157     s = qemu_mallocz(sizeof(TAPState));
1158     s->fd = fd;
1159     s->vc = qemu_new_vlan_client(vlan, model, name, NULL, tap_receive,
1160                                  tap_receive_iov, tap_cleanup, s);
1161     tap_read_poll(s, 1);
1162     snprintf(s->vc->info_str, sizeof(s->vc->info_str), "fd=%d", fd);
1163     return s;
1164 }
1165
1166 #if defined (HOST_BSD) || defined (__FreeBSD_kernel__)
1167 static int tap_open(char *ifname, int ifname_size)
1168 {
1169     int fd;
1170     char *dev;
1171     struct stat s;
1172
1173     TFR(fd = open("/dev/tap", O_RDWR));
1174     if (fd < 0) {
1175         fprintf(stderr, "warning: could not open /dev/tap: no virtual network emulation\n");
1176         return -1;
1177     }
1178
1179     fstat(fd, &s);
1180     dev = devname(s.st_rdev, S_IFCHR);
1181     pstrcpy(ifname, ifname_size, dev);
1182
1183     fcntl(fd, F_SETFL, O_NONBLOCK);
1184     return fd;
1185 }
1186 #elif defined(__sun__)
1187 #define TUNNEWPPA       (('T'<<16) | 0x0001)
1188 /*
1189  * Allocate TAP device, returns opened fd.
1190  * Stores dev name in the first arg(must be large enough).
1191  */
1192 static int tap_alloc(char *dev, size_t dev_size)
1193 {
1194     int tap_fd, if_fd, ppa = -1;
1195     static int ip_fd = 0;
1196     char *ptr;
1197
1198     static int arp_fd = 0;
1199     int ip_muxid, arp_muxid;
1200     struct strioctl  strioc_if, strioc_ppa;
1201     int link_type = I_PLINK;;
1202     struct lifreq ifr;
1203     char actual_name[32] = "";
1204
1205     memset(&ifr, 0x0, sizeof(ifr));
1206
1207     if( *dev ){
1208        ptr = dev;
1209        while( *ptr && !qemu_isdigit((int)*ptr) ) ptr++;
1210        ppa = atoi(ptr);
1211     }
1212
1213     /* Check if IP device was opened */
1214     if( ip_fd )
1215        close(ip_fd);
1216
1217     TFR(ip_fd = open("/dev/udp", O_RDWR, 0));
1218     if (ip_fd < 0) {
1219        syslog(LOG_ERR, "Can't open /dev/ip (actually /dev/udp)");
1220        return -1;
1221     }
1222
1223     TFR(tap_fd = open("/dev/tap", O_RDWR, 0));
1224     if (tap_fd < 0) {
1225        syslog(LOG_ERR, "Can't open /dev/tap");
1226        return -1;
1227     }
1228
1229     /* Assign a new PPA and get its unit number. */
1230     strioc_ppa.ic_cmd = TUNNEWPPA;
1231     strioc_ppa.ic_timout = 0;
1232     strioc_ppa.ic_len = sizeof(ppa);
1233     strioc_ppa.ic_dp = (char *)&ppa;
1234     if ((ppa = ioctl (tap_fd, I_STR, &strioc_ppa)) < 0)
1235        syslog (LOG_ERR, "Can't assign new interface");
1236
1237     TFR(if_fd = open("/dev/tap", O_RDWR, 0));
1238     if (if_fd < 0) {
1239        syslog(LOG_ERR, "Can't open /dev/tap (2)");
1240        return -1;
1241     }
1242     if(ioctl(if_fd, I_PUSH, "ip") < 0){
1243        syslog(LOG_ERR, "Can't push IP module");
1244        return -1;
1245     }
1246
1247     if (ioctl(if_fd, SIOCGLIFFLAGS, &ifr) < 0)
1248         syslog(LOG_ERR, "Can't get flags\n");
1249
1250     snprintf (actual_name, 32, "tap%d", ppa);
1251     pstrcpy(ifr.lifr_name, sizeof(ifr.lifr_name), actual_name);
1252
1253     ifr.lifr_ppa = ppa;
1254     /* Assign ppa according to the unit number returned by tun device */
1255
1256     if (ioctl (if_fd, SIOCSLIFNAME, &ifr) < 0)
1257         syslog (LOG_ERR, "Can't set PPA %d", ppa);
1258     if (ioctl(if_fd, SIOCGLIFFLAGS, &ifr) <0)
1259         syslog (LOG_ERR, "Can't get flags\n");
1260     /* Push arp module to if_fd */
1261     if (ioctl (if_fd, I_PUSH, "arp") < 0)
1262         syslog (LOG_ERR, "Can't push ARP module (2)");
1263
1264     /* Push arp module to ip_fd */
1265     if (ioctl (ip_fd, I_POP, NULL) < 0)
1266         syslog (LOG_ERR, "I_POP failed\n");
1267     if (ioctl (ip_fd, I_PUSH, "arp") < 0)
1268         syslog (LOG_ERR, "Can't push ARP module (3)\n");
1269     /* Open arp_fd */
1270     TFR(arp_fd = open ("/dev/tap", O_RDWR, 0));
1271     if (arp_fd < 0)
1272        syslog (LOG_ERR, "Can't open %s\n", "/dev/tap");
1273
1274     /* Set ifname to arp */
1275     strioc_if.ic_cmd = SIOCSLIFNAME;
1276     strioc_if.ic_timout = 0;
1277     strioc_if.ic_len = sizeof(ifr);
1278     strioc_if.ic_dp = (char *)&ifr;
1279     if (ioctl(arp_fd, I_STR, &strioc_if) < 0){
1280         syslog (LOG_ERR, "Can't set ifname to arp\n");
1281     }
1282
1283     if((ip_muxid = ioctl(ip_fd, I_LINK, if_fd)) < 0){
1284        syslog(LOG_ERR, "Can't link TAP device to IP");
1285        return -1;
1286     }
1287
1288     if ((arp_muxid = ioctl (ip_fd, link_type, arp_fd)) < 0)
1289         syslog (LOG_ERR, "Can't link TAP device to ARP");
1290
1291     close (if_fd);
1292
1293     memset(&ifr, 0x0, sizeof(ifr));
1294     pstrcpy(ifr.lifr_name, sizeof(ifr.lifr_name), actual_name);
1295     ifr.lifr_ip_muxid  = ip_muxid;
1296     ifr.lifr_arp_muxid = arp_muxid;
1297
1298     if (ioctl (ip_fd, SIOCSLIFMUXID, &ifr) < 0)
1299     {
1300       ioctl (ip_fd, I_PUNLINK , arp_muxid);
1301       ioctl (ip_fd, I_PUNLINK, ip_muxid);
1302       syslog (LOG_ERR, "Can't set multiplexor id");
1303     }
1304
1305     snprintf(dev, dev_size, "tap%d", ppa);
1306     return tap_fd;
1307 }
1308
1309 static int tap_open(char *ifname, int ifname_size)
1310 {
1311     char  dev[10]="";
1312     int fd;
1313     if( (fd = tap_alloc(dev, sizeof(dev))) < 0 ){
1314        fprintf(stderr, "Cannot allocate TAP device\n");
1315        return -1;
1316     }
1317     pstrcpy(ifname, ifname_size, dev);
1318     fcntl(fd, F_SETFL, O_NONBLOCK);
1319     return fd;
1320 }
1321 #elif defined (_AIX)
1322 static int tap_open(char *ifname, int ifname_size)
1323 {
1324     fprintf (stderr, "no tap on AIX\n");
1325     return -1;
1326 }
1327 #else
1328 static int tap_open(char *ifname, int ifname_size)
1329 {
1330     struct ifreq ifr;
1331     int fd, ret;
1332
1333     TFR(fd = open("/dev/net/tun", O_RDWR));
1334     if (fd < 0) {
1335         fprintf(stderr, "warning: could not open /dev/net/tun: no virtual network emulation\n");
1336         return -1;
1337     }
1338     memset(&ifr, 0, sizeof(ifr));
1339     ifr.ifr_flags = IFF_TAP | IFF_NO_PI;
1340     if (ifname[0] != '\0')
1341         pstrcpy(ifr.ifr_name, IFNAMSIZ, ifname);
1342     else
1343         pstrcpy(ifr.ifr_name, IFNAMSIZ, "tap%d");
1344     ret = ioctl(fd, TUNSETIFF, (void *) &ifr);
1345     if (ret != 0) {
1346         fprintf(stderr, "warning: could not configure /dev/net/tun: no virtual network emulation\n");
1347         close(fd);
1348         return -1;
1349     }
1350     pstrcpy(ifname, ifname_size, ifr.ifr_name);
1351     fcntl(fd, F_SETFL, O_NONBLOCK);
1352     return fd;
1353 }
1354 #endif
1355
1356 static int launch_script(const char *setup_script, const char *ifname, int fd)
1357 {
1358     sigset_t oldmask, mask;
1359     int pid, status;
1360     char *args[3];
1361     char **parg;
1362
1363     sigemptyset(&mask);
1364     sigaddset(&mask, SIGCHLD);
1365     sigprocmask(SIG_BLOCK, &mask, &oldmask);
1366
1367     /* try to launch network script */
1368     pid = fork();
1369     if (pid == 0) {
1370         int open_max = sysconf(_SC_OPEN_MAX), i;
1371
1372         for (i = 0; i < open_max; i++) {
1373             if (i != STDIN_FILENO &&
1374                 i != STDOUT_FILENO &&
1375                 i != STDERR_FILENO &&
1376                 i != fd) {
1377                 close(i);
1378             }
1379         }
1380         parg = args;
1381         *parg++ = (char *)setup_script;
1382         *parg++ = (char *)ifname;
1383         *parg++ = NULL;
1384         execv(setup_script, args);
1385         _exit(1);
1386     } else if (pid > 0) {
1387         while (waitpid(pid, &status, 0) != pid) {
1388             /* loop */
1389         }
1390         sigprocmask(SIG_SETMASK, &oldmask, NULL);
1391
1392         if (WIFEXITED(status) && WEXITSTATUS(status) == 0) {
1393             return 0;
1394         }
1395     }
1396     fprintf(stderr, "%s: could not launch network script\n", setup_script);
1397     return -1;
1398 }
1399
1400 static TAPState *net_tap_init(VLANState *vlan, const char *model,
1401                               const char *name, const char *ifname1,
1402                               const char *setup_script, const char *down_script)
1403 {
1404     TAPState *s;
1405     int fd;
1406     char ifname[128];
1407
1408     if (ifname1 != NULL)
1409         pstrcpy(ifname, sizeof(ifname), ifname1);
1410     else
1411         ifname[0] = '\0';
1412     TFR(fd = tap_open(ifname, sizeof(ifname)));
1413     if (fd < 0)
1414         return NULL;
1415
1416     if (!setup_script || !strcmp(setup_script, "no"))
1417         setup_script = "";
1418     if (setup_script[0] != '\0' &&
1419         launch_script(setup_script, ifname, fd)) {
1420         return NULL;
1421     }
1422     s = net_tap_fd_init(vlan, model, name, fd);
1423     snprintf(s->vc->info_str, sizeof(s->vc->info_str),
1424              "ifname=%s,script=%s,downscript=%s",
1425              ifname, setup_script, down_script);
1426     if (down_script && strcmp(down_script, "no")) {
1427         snprintf(s->down_script, sizeof(s->down_script), "%s", down_script);
1428         snprintf(s->down_script_arg, sizeof(s->down_script_arg), "%s", ifname);
1429     }
1430     return s;
1431 }
1432
1433 #endif /* !_WIN32 */
1434
1435 #if defined(CONFIG_VDE)
1436 typedef struct VDEState {
1437     VLANClientState *vc;
1438     VDECONN *vde;
1439 } VDEState;
1440
1441 static void vde_to_qemu(void *opaque)
1442 {
1443     VDEState *s = opaque;
1444     uint8_t buf[4096];
1445     int size;
1446
1447     size = vde_recv(s->vde, (char *)buf, sizeof(buf), 0);
1448     if (size > 0) {
1449         qemu_send_packet(s->vc, buf, size);
1450     }
1451 }
1452
1453 static ssize_t vde_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
1454 {
1455     VDEState *s = vc->opaque;
1456     ssize_t ret;
1457
1458     do {
1459       ret = vde_send(s->vde, (const char *)buf, size, 0);
1460     } while (ret < 0 && errno == EINTR);
1461
1462     return ret;
1463 }
1464
1465 static void vde_cleanup(VLANClientState *vc)
1466 {
1467     VDEState *s = vc->opaque;
1468     qemu_set_fd_handler(vde_datafd(s->vde), NULL, NULL, NULL);
1469     vde_close(s->vde);
1470     qemu_free(s);
1471 }
1472
1473 static int net_vde_init(VLANState *vlan, const char *model,
1474                         const char *name, const char *sock,
1475                         int port, const char *group, int mode)
1476 {
1477     VDEState *s;
1478     char *init_group = strlen(group) ? (char *)group : NULL;
1479     char *init_sock = strlen(sock) ? (char *)sock : NULL;
1480
1481     struct vde_open_args args = {
1482         .port = port,
1483         .group = init_group,
1484         .mode = mode,
1485     };
1486
1487     s = qemu_mallocz(sizeof(VDEState));
1488     s->vde = vde_open(init_sock, (char *)"QEMU", &args);
1489     if (!s->vde){
1490         free(s);
1491         return -1;
1492     }
1493     s->vc = qemu_new_vlan_client(vlan, model, name, NULL, vde_receive,
1494                                  NULL, vde_cleanup, s);
1495     qemu_set_fd_handler(vde_datafd(s->vde), vde_to_qemu, NULL, s);
1496     snprintf(s->vc->info_str, sizeof(s->vc->info_str), "sock=%s,fd=%d",
1497              sock, vde_datafd(s->vde));
1498     return 0;
1499 }
1500 #endif
1501
1502 /* network connection */
1503 typedef struct NetSocketState {
1504     VLANClientState *vc;
1505     int fd;
1506     int state; /* 0 = getting length, 1 = getting data */
1507     unsigned int index;
1508     unsigned int packet_len;
1509     uint8_t buf[4096];
1510     struct sockaddr_in dgram_dst; /* contains inet host and port destination iff connectionless (SOCK_DGRAM) */
1511 } NetSocketState;
1512
1513 typedef struct NetSocketListenState {
1514     VLANState *vlan;
1515     char *model;
1516     char *name;
1517     int fd;
1518 } NetSocketListenState;
1519
1520 /* XXX: we consider we can send the whole packet without blocking */
1521 static ssize_t net_socket_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
1522 {
1523     NetSocketState *s = vc->opaque;
1524     uint32_t len;
1525     len = htonl(size);
1526
1527     send_all(s->fd, (const uint8_t *)&len, sizeof(len));
1528     return send_all(s->fd, buf, size);
1529 }
1530
1531 static ssize_t net_socket_receive_dgram(VLANClientState *vc, const uint8_t *buf, size_t size)
1532 {
1533     NetSocketState *s = vc->opaque;
1534
1535     return sendto(s->fd, (const void *)buf, size, 0,
1536                   (struct sockaddr *)&s->dgram_dst, sizeof(s->dgram_dst));
1537 }
1538
1539 static void net_socket_send(void *opaque)
1540 {
1541     NetSocketState *s = opaque;
1542     int size, err;
1543     unsigned l;
1544     uint8_t buf1[4096];
1545     const uint8_t *buf;
1546
1547     size = recv(s->fd, (void *)buf1, sizeof(buf1), 0);
1548     if (size < 0) {
1549         err = socket_error();
1550         if (err != EWOULDBLOCK)
1551             goto eoc;
1552     } else if (size == 0) {
1553         /* end of connection */
1554     eoc:
1555         qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1556         closesocket(s->fd);
1557         return;
1558     }
1559     buf = buf1;
1560     while (size > 0) {
1561         /* reassemble a packet from the network */
1562         switch(s->state) {
1563         case 0:
1564             l = 4 - s->index;
1565             if (l > size)
1566                 l = size;
1567             memcpy(s->buf + s->index, buf, l);
1568             buf += l;
1569             size -= l;
1570             s->index += l;
1571             if (s->index == 4) {
1572                 /* got length */
1573                 s->packet_len = ntohl(*(uint32_t *)s->buf);
1574                 s->index = 0;
1575                 s->state = 1;
1576             }
1577             break;
1578         case 1:
1579             l = s->packet_len - s->index;
1580             if (l > size)
1581                 l = size;
1582             if (s->index + l <= sizeof(s->buf)) {
1583                 memcpy(s->buf + s->index, buf, l);
1584             } else {
1585                 fprintf(stderr, "serious error: oversized packet received,"
1586                     "connection terminated.\n");
1587                 s->state = 0;
1588                 goto eoc;
1589             }
1590
1591             s->index += l;
1592             buf += l;
1593             size -= l;
1594             if (s->index >= s->packet_len) {
1595                 qemu_send_packet(s->vc, s->buf, s->packet_len);
1596                 s->index = 0;
1597                 s->state = 0;
1598             }
1599             break;
1600         }
1601     }
1602 }
1603
1604 static void net_socket_send_dgram(void *opaque)
1605 {
1606     NetSocketState *s = opaque;
1607     int size;
1608
1609     size = recv(s->fd, (void *)s->buf, sizeof(s->buf), 0);
1610     if (size < 0)
1611         return;
1612     if (size == 0) {
1613         /* end of connection */
1614         qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1615         return;
1616     }
1617     qemu_send_packet(s->vc, s->buf, size);
1618 }
1619
1620 static int net_socket_mcast_create(struct sockaddr_in *mcastaddr)
1621 {
1622     struct ip_mreq imr;
1623     int fd;
1624     int val, ret;
1625     if (!IN_MULTICAST(ntohl(mcastaddr->sin_addr.s_addr))) {
1626         fprintf(stderr, "qemu: error: specified mcastaddr \"%s\" (0x%08x) does not contain a multicast address\n",
1627                 inet_ntoa(mcastaddr->sin_addr),
1628                 (int)ntohl(mcastaddr->sin_addr.s_addr));
1629         return -1;
1630
1631     }
1632     fd = socket(PF_INET, SOCK_DGRAM, 0);
1633     if (fd < 0) {
1634         perror("socket(PF_INET, SOCK_DGRAM)");
1635         return -1;
1636     }
1637
1638     val = 1;
1639     ret=setsockopt(fd, SOL_SOCKET, SO_REUSEADDR,
1640                    (const char *)&val, sizeof(val));
1641     if (ret < 0) {
1642         perror("setsockopt(SOL_SOCKET, SO_REUSEADDR)");
1643         goto fail;
1644     }
1645
1646     ret = bind(fd, (struct sockaddr *)mcastaddr, sizeof(*mcastaddr));
1647     if (ret < 0) {
1648         perror("bind");
1649         goto fail;
1650     }
1651
1652     /* Add host to multicast group */
1653     imr.imr_multiaddr = mcastaddr->sin_addr;
1654     imr.imr_interface.s_addr = htonl(INADDR_ANY);
1655
1656     ret = setsockopt(fd, IPPROTO_IP, IP_ADD_MEMBERSHIP,
1657                      (const char *)&imr, sizeof(struct ip_mreq));
1658     if (ret < 0) {
1659         perror("setsockopt(IP_ADD_MEMBERSHIP)");
1660         goto fail;
1661     }
1662
1663     /* Force mcast msgs to loopback (eg. several QEMUs in same host */
1664     val = 1;
1665     ret=setsockopt(fd, IPPROTO_IP, IP_MULTICAST_LOOP,
1666                    (const char *)&val, sizeof(val));
1667     if (ret < 0) {
1668         perror("setsockopt(SOL_IP, IP_MULTICAST_LOOP)");
1669         goto fail;
1670     }
1671
1672     socket_set_nonblock(fd);
1673     return fd;
1674 fail:
1675     if (fd >= 0)
1676         closesocket(fd);
1677     return -1;
1678 }
1679
1680 static void net_socket_cleanup(VLANClientState *vc)
1681 {
1682     NetSocketState *s = vc->opaque;
1683     qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1684     close(s->fd);
1685     qemu_free(s);
1686 }
1687
1688 static NetSocketState *net_socket_fd_init_dgram(VLANState *vlan,
1689                                                 const char *model,
1690                                                 const char *name,
1691                                                 int fd, int is_connected)
1692 {
1693     struct sockaddr_in saddr;
1694     int newfd;
1695     socklen_t saddr_len;
1696     NetSocketState *s;
1697
1698     /* fd passed: multicast: "learn" dgram_dst address from bound address and save it
1699      * Because this may be "shared" socket from a "master" process, datagrams would be recv()
1700      * by ONLY ONE process: we must "clone" this dgram socket --jjo
1701      */
1702
1703     if (is_connected) {
1704         if (getsockname(fd, (struct sockaddr *) &saddr, &saddr_len) == 0) {
1705             /* must be bound */
1706             if (saddr.sin_addr.s_addr==0) {
1707                 fprintf(stderr, "qemu: error: init_dgram: fd=%d unbound, cannot setup multicast dst addr\n",
1708                         fd);
1709                 return NULL;
1710             }
1711             /* clone dgram socket */
1712             newfd = net_socket_mcast_create(&saddr);
1713             if (newfd < 0) {
1714                 /* error already reported by net_socket_mcast_create() */
1715                 close(fd);
1716                 return NULL;
1717             }
1718             /* clone newfd to fd, close newfd */
1719             dup2(newfd, fd);
1720             close(newfd);
1721
1722         } else {
1723             fprintf(stderr, "qemu: error: init_dgram: fd=%d failed getsockname(): %s\n",
1724                     fd, strerror(errno));
1725             return NULL;
1726         }
1727     }
1728
1729     s = qemu_mallocz(sizeof(NetSocketState));
1730     s->fd = fd;
1731
1732     s->vc = qemu_new_vlan_client(vlan, model, name, NULL, net_socket_receive_dgram,
1733                                  NULL, net_socket_cleanup, s);
1734     qemu_set_fd_handler(s->fd, net_socket_send_dgram, NULL, s);
1735
1736     /* mcast: save bound address as dst */
1737     if (is_connected) s->dgram_dst=saddr;
1738
1739     snprintf(s->vc->info_str, sizeof(s->vc->info_str),
1740             "socket: fd=%d (%s mcast=%s:%d)",
1741             fd, is_connected? "cloned" : "",
1742             inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
1743     return s;
1744 }
1745
1746 static void net_socket_connect(void *opaque)
1747 {
1748     NetSocketState *s = opaque;
1749     qemu_set_fd_handler(s->fd, net_socket_send, NULL, s);
1750 }
1751
1752 static NetSocketState *net_socket_fd_init_stream(VLANState *vlan,
1753                                                  const char *model,
1754                                                  const char *name,
1755                                                  int fd, int is_connected)
1756 {
1757     NetSocketState *s;
1758     s = qemu_mallocz(sizeof(NetSocketState));
1759     s->fd = fd;
1760     s->vc = qemu_new_vlan_client(vlan, model, name, NULL, net_socket_receive,
1761                                  NULL, net_socket_cleanup, s);
1762     snprintf(s->vc->info_str, sizeof(s->vc->info_str),
1763              "socket: fd=%d", fd);
1764     if (is_connected) {
1765         net_socket_connect(s);
1766     } else {
1767         qemu_set_fd_handler(s->fd, NULL, net_socket_connect, s);
1768     }
1769     return s;
1770 }
1771
1772 static NetSocketState *net_socket_fd_init(VLANState *vlan,
1773                                           const char *model, const char *name,
1774                                           int fd, int is_connected)
1775 {
1776     int so_type=-1, optlen=sizeof(so_type);
1777
1778     if(getsockopt(fd, SOL_SOCKET, SO_TYPE, (char *)&so_type,
1779         (socklen_t *)&optlen)< 0) {
1780         fprintf(stderr, "qemu: error: getsockopt(SO_TYPE) for fd=%d failed\n", fd);
1781         return NULL;
1782     }
1783     switch(so_type) {
1784     case SOCK_DGRAM:
1785         return net_socket_fd_init_dgram(vlan, model, name, fd, is_connected);
1786     case SOCK_STREAM:
1787         return net_socket_fd_init_stream(vlan, model, name, fd, is_connected);
1788     default:
1789         /* who knows ... this could be a eg. a pty, do warn and continue as stream */
1790         fprintf(stderr, "qemu: warning: socket type=%d for fd=%d is not SOCK_DGRAM or SOCK_STREAM\n", so_type, fd);
1791         return net_socket_fd_init_stream(vlan, model, name, fd, is_connected);
1792     }
1793     return NULL;
1794 }
1795
1796 static void net_socket_accept(void *opaque)
1797 {
1798     NetSocketListenState *s = opaque;
1799     NetSocketState *s1;
1800     struct sockaddr_in saddr;
1801     socklen_t len;
1802     int fd;
1803
1804     for(;;) {
1805         len = sizeof(saddr);
1806         fd = accept(s->fd, (struct sockaddr *)&saddr, &len);
1807         if (fd < 0 && errno != EINTR) {
1808             return;
1809         } else if (fd >= 0) {
1810             break;
1811         }
1812     }
1813     s1 = net_socket_fd_init(s->vlan, s->model, s->name, fd, 1);
1814     if (!s1) {
1815         closesocket(fd);
1816     } else {
1817         snprintf(s1->vc->info_str, sizeof(s1->vc->info_str),
1818                  "socket: connection from %s:%d",
1819                  inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
1820     }
1821 }
1822
1823 static int net_socket_listen_init(VLANState *vlan,
1824                                   const char *model,
1825                                   const char *name,
1826                                   const char *host_str)
1827 {
1828     NetSocketListenState *s;
1829     int fd, val, ret;
1830     struct sockaddr_in saddr;
1831
1832     if (parse_host_port(&saddr, host_str) < 0)
1833         return -1;
1834
1835     s = qemu_mallocz(sizeof(NetSocketListenState));
1836
1837     fd = socket(PF_INET, SOCK_STREAM, 0);
1838     if (fd < 0) {
1839         perror("socket");
1840         return -1;
1841     }
1842     socket_set_nonblock(fd);
1843
1844     /* allow fast reuse */
1845     val = 1;
1846     setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (const char *)&val, sizeof(val));
1847
1848     ret = bind(fd, (struct sockaddr *)&saddr, sizeof(saddr));
1849     if (ret < 0) {
1850         perror("bind");
1851         return -1;
1852     }
1853     ret = listen(fd, 0);
1854     if (ret < 0) {
1855         perror("listen");
1856         return -1;
1857     }
1858     s->vlan = vlan;
1859     s->model = strdup(model);
1860     s->name = name ? strdup(name) : NULL;
1861     s->fd = fd;
1862     qemu_set_fd_handler(fd, net_socket_accept, NULL, s);
1863     return 0;
1864 }
1865
1866 static int net_socket_connect_init(VLANState *vlan,
1867                                    const char *model,
1868                                    const char *name,
1869                                    const char *host_str)
1870 {
1871     NetSocketState *s;
1872     int fd, connected, ret, err;
1873     struct sockaddr_in saddr;
1874
1875     if (parse_host_port(&saddr, host_str) < 0)
1876         return -1;
1877
1878     fd = socket(PF_INET, SOCK_STREAM, 0);
1879     if (fd < 0) {
1880         perror("socket");
1881         return -1;
1882     }
1883     socket_set_nonblock(fd);
1884
1885     connected = 0;
1886     for(;;) {
1887         ret = connect(fd, (struct sockaddr *)&saddr, sizeof(saddr));
1888         if (ret < 0) {
1889             err = socket_error();
1890             if (err == EINTR || err == EWOULDBLOCK) {
1891             } else if (err == EINPROGRESS) {
1892                 break;
1893 #ifdef _WIN32
1894             } else if (err == WSAEALREADY) {
1895                 break;
1896 #endif
1897             } else {
1898                 perror("connect");
1899                 closesocket(fd);
1900                 return -1;
1901             }
1902         } else {
1903             connected = 1;
1904             break;
1905         }
1906     }
1907     s = net_socket_fd_init(vlan, model, name, fd, connected);
1908     if (!s)
1909         return -1;
1910     snprintf(s->vc->info_str, sizeof(s->vc->info_str),
1911              "socket: connect to %s:%d",
1912              inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
1913     return 0;
1914 }
1915
1916 static int net_socket_mcast_init(VLANState *vlan,
1917                                  const char *model,
1918                                  const char *name,
1919                                  const char *host_str)
1920 {
1921     NetSocketState *s;
1922     int fd;
1923     struct sockaddr_in saddr;
1924
1925     if (parse_host_port(&saddr, host_str) < 0)
1926         return -1;
1927
1928
1929     fd = net_socket_mcast_create(&saddr);
1930     if (fd < 0)
1931         return -1;
1932
1933     s = net_socket_fd_init(vlan, model, name, fd, 0);
1934     if (!s)
1935         return -1;
1936
1937     s->dgram_dst = saddr;
1938
1939     snprintf(s->vc->info_str, sizeof(s->vc->info_str),
1940              "socket: mcast=%s:%d",
1941              inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
1942     return 0;
1943
1944 }
1945
1946 typedef struct DumpState {
1947     VLANClientState *pcap_vc;
1948     int fd;
1949     int pcap_caplen;
1950 } DumpState;
1951
1952 #define PCAP_MAGIC 0xa1b2c3d4
1953
1954 struct pcap_file_hdr {
1955     uint32_t magic;
1956     uint16_t version_major;
1957     uint16_t version_minor;
1958     int32_t thiszone;
1959     uint32_t sigfigs;
1960     uint32_t snaplen;
1961     uint32_t linktype;
1962 };
1963
1964 struct pcap_sf_pkthdr {
1965     struct {
1966         int32_t tv_sec;
1967         int32_t tv_usec;
1968     } ts;
1969     uint32_t caplen;
1970     uint32_t len;
1971 };
1972
1973 static ssize_t dump_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
1974 {
1975     DumpState *s = vc->opaque;
1976     struct pcap_sf_pkthdr hdr;
1977     int64_t ts;
1978     int caplen;
1979
1980     /* Early return in case of previous error. */
1981     if (s->fd < 0) {
1982         return size;
1983     }
1984
1985     ts = muldiv64(qemu_get_clock(vm_clock), 1000000, ticks_per_sec);
1986     caplen = size > s->pcap_caplen ? s->pcap_caplen : size;
1987
1988     hdr.ts.tv_sec = ts / 1000000;
1989     hdr.ts.tv_usec = ts % 1000000;
1990     hdr.caplen = caplen;
1991     hdr.len = size;
1992     if (write(s->fd, &hdr, sizeof(hdr)) != sizeof(hdr) ||
1993         write(s->fd, buf, caplen) != caplen) {
1994         qemu_log("-net dump write error - stop dump\n");
1995         close(s->fd);
1996         s->fd = -1;
1997     }
1998
1999     return size;
2000 }
2001
2002 static void net_dump_cleanup(VLANClientState *vc)
2003 {
2004     DumpState *s = vc->opaque;
2005
2006     close(s->fd);
2007     qemu_free(s);
2008 }
2009
2010 static int net_dump_init(Monitor *mon, VLANState *vlan, const char *device,
2011                          const char *name, const char *filename, int len)
2012 {
2013     struct pcap_file_hdr hdr;
2014     DumpState *s;
2015
2016     s = qemu_malloc(sizeof(DumpState));
2017
2018     s->fd = open(filename, O_CREAT | O_WRONLY | O_BINARY, 0644);
2019     if (s->fd < 0) {
2020         config_error(mon, "-net dump: can't open %s\n", filename);
2021         return -1;
2022     }
2023
2024     s->pcap_caplen = len;
2025
2026     hdr.magic = PCAP_MAGIC;
2027     hdr.version_major = 2;
2028     hdr.version_minor = 4;
2029     hdr.thiszone = 0;
2030     hdr.sigfigs = 0;
2031     hdr.snaplen = s->pcap_caplen;
2032     hdr.linktype = 1;
2033
2034     if (write(s->fd, &hdr, sizeof(hdr)) < sizeof(hdr)) {
2035         config_error(mon, "-net dump write error: %s\n", strerror(errno));
2036         close(s->fd);
2037         qemu_free(s);
2038         return -1;
2039     }
2040
2041     s->pcap_vc = qemu_new_vlan_client(vlan, device, name, NULL, dump_receive, NULL,
2042                                       net_dump_cleanup, s);
2043     snprintf(s->pcap_vc->info_str, sizeof(s->pcap_vc->info_str),
2044              "dump to %s (len=%d)", filename, len);
2045     return 0;
2046 }
2047
2048 /* find or alloc a new VLAN */
2049 VLANState *qemu_find_vlan(int id)
2050 {
2051     VLANState **pvlan, *vlan;
2052     for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
2053         if (vlan->id == id)
2054             return vlan;
2055     }
2056     vlan = qemu_mallocz(sizeof(VLANState));
2057     vlan->id = id;
2058     vlan->next = NULL;
2059     pvlan = &first_vlan;
2060     while (*pvlan != NULL)
2061         pvlan = &(*pvlan)->next;
2062     *pvlan = vlan;
2063     return vlan;
2064 }
2065
2066 static int nic_get_free_idx(void)
2067 {
2068     int index;
2069
2070     for (index = 0; index < MAX_NICS; index++)
2071         if (!nd_table[index].used)
2072             return index;
2073     return -1;
2074 }
2075
2076 void qemu_check_nic_model(NICInfo *nd, const char *model)
2077 {
2078     const char *models[2];
2079
2080     models[0] = model;
2081     models[1] = NULL;
2082
2083     qemu_check_nic_model_list(nd, models, model);
2084 }
2085
2086 void qemu_check_nic_model_list(NICInfo *nd, const char * const *models,
2087                                const char *default_model)
2088 {
2089     int i, exit_status = 0;
2090
2091     if (!nd->model)
2092         nd->model = strdup(default_model);
2093
2094     if (strcmp(nd->model, "?") != 0) {
2095         for (i = 0 ; models[i]; i++)
2096             if (strcmp(nd->model, models[i]) == 0)
2097                 return;
2098
2099         fprintf(stderr, "qemu: Unsupported NIC model: %s\n", nd->model);
2100         exit_status = 1;
2101     }
2102
2103     fprintf(stderr, "qemu: Supported NIC models: ");
2104     for (i = 0 ; models[i]; i++)
2105         fprintf(stderr, "%s%c", models[i], models[i+1] ? ',' : '\n');
2106
2107     exit(exit_status);
2108 }
2109
2110 int net_client_init(Monitor *mon, const char *device, const char *p)
2111 {
2112     char buf[1024];
2113     int vlan_id, ret;
2114     VLANState *vlan;
2115     char *name = NULL;
2116
2117     vlan_id = 0;
2118     if (get_param_value(buf, sizeof(buf), "vlan", p)) {
2119         vlan_id = strtol(buf, NULL, 0);
2120     }
2121     vlan = qemu_find_vlan(vlan_id);
2122
2123     if (get_param_value(buf, sizeof(buf), "name", p)) {
2124         name = qemu_strdup(buf);
2125     }
2126     if (!strcmp(device, "nic")) {
2127         static const char * const nic_params[] = {
2128             "vlan", "name", "macaddr", "model", "addr", "vectors", NULL
2129         };
2130         NICInfo *nd;
2131         uint8_t *macaddr;
2132         int idx = nic_get_free_idx();
2133
2134         if (check_params(buf, sizeof(buf), nic_params, p) < 0) {
2135             config_error(mon, "invalid parameter '%s' in '%s'\n", buf, p);
2136             ret = -1;
2137             goto out;
2138         }
2139         if (idx == -1 || nb_nics >= MAX_NICS) {
2140             config_error(mon, "Too Many NICs\n");
2141             ret = -1;
2142             goto out;
2143         }
2144         nd = &nd_table[idx];
2145         macaddr = nd->macaddr;
2146         macaddr[0] = 0x52;
2147         macaddr[1] = 0x54;
2148         macaddr[2] = 0x00;
2149         macaddr[3] = 0x12;
2150         macaddr[4] = 0x34;
2151         macaddr[5] = 0x56 + idx;
2152
2153         if (get_param_value(buf, sizeof(buf), "macaddr", p)) {
2154             if (parse_macaddr(macaddr, buf) < 0) {
2155                 config_error(mon, "invalid syntax for ethernet address\n");
2156                 ret = -1;
2157                 goto out;
2158             }
2159         }
2160         if (get_param_value(buf, sizeof(buf), "model", p)) {
2161             nd->model = strdup(buf);
2162         }
2163         if (get_param_value(buf, sizeof(buf), "addr", p)) {
2164             nd->devaddr = strdup(buf);
2165         }
2166         nd->nvectors = NIC_NVECTORS_UNSPECIFIED;
2167         if (get_param_value(buf, sizeof(buf), "vectors", p)) {
2168             char *endptr;
2169             long vectors = strtol(buf, &endptr, 0);
2170             if (*endptr) {
2171                 config_error(mon, "invalid syntax for # of vectors\n");
2172                 ret = -1;
2173                 goto out;
2174             }
2175             if (vectors < 0 || vectors > 0x7ffffff) {
2176                 config_error(mon, "invalid # of vectors\n");
2177                 ret = -1;
2178                 goto out;
2179             }
2180             nd->nvectors = vectors;
2181         }
2182         nd->vlan = vlan;
2183         nd->name = name;
2184         nd->used = 1;
2185         name = NULL;
2186         nb_nics++;
2187         vlan->nb_guest_devs++;
2188         ret = idx;
2189     } else
2190     if (!strcmp(device, "none")) {
2191         if (*p != '\0') {
2192             config_error(mon, "'none' takes no parameters\n");
2193             ret = -1;
2194             goto out;
2195         }
2196         /* does nothing. It is needed to signal that no network cards
2197            are wanted */
2198         ret = 0;
2199     } else
2200 #ifdef CONFIG_SLIRP
2201     if (!strcmp(device, "user")) {
2202         static const char * const slirp_params[] = {
2203             "vlan", "name", "hostname", "restrict", "ip", NULL
2204         };
2205         int restricted = 0;
2206         char *ip = NULL;
2207
2208         if (check_params(buf, sizeof(buf), slirp_params, p) < 0) {
2209             config_error(mon, "invalid parameter '%s' in '%s'\n", buf, p);
2210             ret = -1;
2211             goto out;
2212         }
2213         if (get_param_value(buf, sizeof(buf), "hostname", p)) {
2214             pstrcpy(slirp_hostname, sizeof(slirp_hostname), buf);
2215         }
2216         if (get_param_value(buf, sizeof(buf), "restrict", p)) {
2217             restricted = (buf[0] == 'y') ? 1 : 0;
2218         }
2219         if (get_param_value(buf, sizeof(buf), "ip", p)) {
2220             ip = qemu_strdup(buf);
2221         }
2222         vlan->nb_host_devs++;
2223         ret = net_slirp_init(vlan, device, name, restricted, ip);
2224         qemu_free(ip);
2225     } else if (!strcmp(device, "channel")) {
2226         long port;
2227         char name[20], *devname;
2228         struct VMChannel *vmc;
2229
2230         port = strtol(p, &devname, 10);
2231         devname++;
2232         if (port < 1 || port > 65535) {
2233             config_error(mon, "vmchannel wrong port number\n");
2234             ret = -1;
2235             goto out;
2236         }
2237         vmc = malloc(sizeof(struct VMChannel));
2238         snprintf(name, 20, "vmchannel%ld", port);
2239         vmc->hd = qemu_chr_open(name, devname, NULL);
2240         if (!vmc->hd) {
2241             config_error(mon, "could not open vmchannel device '%s'\n",
2242                          devname);
2243             ret = -1;
2244             goto out;
2245         }
2246         vmc->port = port;
2247         slirp_add_exec(3, vmc->hd, 4, port);
2248         qemu_chr_add_handlers(vmc->hd, vmchannel_can_read, vmchannel_read,
2249                 NULL, vmc);
2250         ret = 0;
2251     } else
2252 #endif
2253 #ifdef _WIN32
2254     if (!strcmp(device, "tap")) {
2255         static const char * const tap_params[] = {
2256             "vlan", "name", "ifname", NULL
2257         };
2258         char ifname[64];
2259
2260         if (check_params(buf, sizeof(buf), tap_params, p) < 0) {
2261             config_error(mon, "invalid parameter '%s' in '%s'\n", buf, p);
2262             ret = -1;
2263             goto out;
2264         }
2265         if (get_param_value(ifname, sizeof(ifname), "ifname", p) <= 0) {
2266             config_error(mon, "tap: no interface name\n");
2267             ret = -1;
2268             goto out;
2269         }
2270         vlan->nb_host_devs++;
2271         ret = tap_win32_init(vlan, device, name, ifname);
2272     } else
2273 #elif defined (_AIX)
2274 #else
2275     if (!strcmp(device, "tap")) {
2276         char ifname[64], chkbuf[64];
2277         char setup_script[1024], down_script[1024];
2278         TAPState *s;
2279         int fd;
2280         vlan->nb_host_devs++;
2281         if (get_param_value(buf, sizeof(buf), "fd", p) > 0) {
2282             static const char * const fd_params[] = {
2283                 "vlan", "name", "fd", "sndbuf", NULL
2284             };
2285             if (check_params(chkbuf, sizeof(chkbuf), fd_params, p) < 0) {
2286                 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
2287                 ret = -1;
2288                 goto out;
2289             }
2290             fd = strtol(buf, NULL, 0);
2291             fcntl(fd, F_SETFL, O_NONBLOCK);
2292             s = net_tap_fd_init(vlan, device, name, fd);
2293         } else {
2294             static const char * const tap_params[] = {
2295                 "vlan", "name", "ifname", "script", "downscript", "sndbuf", NULL
2296             };
2297             if (check_params(chkbuf, sizeof(chkbuf), tap_params, p) < 0) {
2298                 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
2299                 ret = -1;
2300                 goto out;
2301             }
2302             if (get_param_value(ifname, sizeof(ifname), "ifname", p) <= 0) {
2303                 ifname[0] = '\0';
2304             }
2305             if (get_param_value(setup_script, sizeof(setup_script), "script", p) == 0) {
2306                 pstrcpy(setup_script, sizeof(setup_script), DEFAULT_NETWORK_SCRIPT);
2307             }
2308             if (get_param_value(down_script, sizeof(down_script), "downscript", p) == 0) {
2309                 pstrcpy(down_script, sizeof(down_script), DEFAULT_NETWORK_DOWN_SCRIPT);
2310             }
2311             s = net_tap_init(vlan, device, name, ifname, setup_script, down_script);
2312         }
2313         if (s != NULL) {
2314             if (get_param_value(buf, sizeof(buf), "sndbuf", p)) {
2315                 tap_set_sndbuf(s, atoi(buf), mon);
2316             }
2317             ret = 0;
2318         } else {
2319             ret = -1;
2320         }
2321     } else
2322 #endif
2323     if (!strcmp(device, "socket")) {
2324         char chkbuf[64];
2325         if (get_param_value(buf, sizeof(buf), "fd", p) > 0) {
2326             static const char * const fd_params[] = {
2327                 "vlan", "name", "fd", NULL
2328             };
2329             int fd;
2330             if (check_params(chkbuf, sizeof(chkbuf), fd_params, p) < 0) {
2331                 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
2332                 ret = -1;
2333                 goto out;
2334             }
2335             fd = strtol(buf, NULL, 0);
2336             ret = -1;
2337             if (net_socket_fd_init(vlan, device, name, fd, 1))
2338                 ret = 0;
2339         } else if (get_param_value(buf, sizeof(buf), "listen", p) > 0) {
2340             static const char * const listen_params[] = {
2341                 "vlan", "name", "listen", NULL
2342             };
2343             if (check_params(chkbuf, sizeof(chkbuf), listen_params, p) < 0) {
2344                 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
2345                 ret = -1;
2346                 goto out;
2347             }
2348             ret = net_socket_listen_init(vlan, device, name, buf);
2349         } else if (get_param_value(buf, sizeof(buf), "connect", p) > 0) {
2350             static const char * const connect_params[] = {
2351                 "vlan", "name", "connect", NULL
2352             };
2353             if (check_params(chkbuf, sizeof(chkbuf), connect_params, p) < 0) {
2354                 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
2355                 ret = -1;
2356                 goto out;
2357             }
2358             ret = net_socket_connect_init(vlan, device, name, buf);
2359         } else if (get_param_value(buf, sizeof(buf), "mcast", p) > 0) {
2360             static const char * const mcast_params[] = {
2361                 "vlan", "name", "mcast", NULL
2362             };
2363             if (check_params(chkbuf, sizeof(chkbuf), mcast_params, p) < 0) {
2364                 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
2365                 ret = -1;
2366                 goto out;
2367             }
2368             ret = net_socket_mcast_init(vlan, device, name, buf);
2369         } else {
2370             config_error(mon, "Unknown socket options: %s\n", p);
2371             ret = -1;
2372             goto out;
2373         }
2374         vlan->nb_host_devs++;
2375     } else
2376 #ifdef CONFIG_VDE
2377     if (!strcmp(device, "vde")) {
2378         static const char * const vde_params[] = {
2379             "vlan", "name", "sock", "port", "group", "mode", NULL
2380         };
2381         char vde_sock[1024], vde_group[512];
2382         int vde_port, vde_mode;
2383
2384         if (check_params(buf, sizeof(buf), vde_params, p) < 0) {
2385             config_error(mon, "invalid parameter '%s' in '%s'\n", buf, p);
2386             ret = -1;
2387             goto out;
2388         }
2389         vlan->nb_host_devs++;
2390         if (get_param_value(vde_sock, sizeof(vde_sock), "sock", p) <= 0) {
2391             vde_sock[0] = '\0';
2392         }
2393         if (get_param_value(buf, sizeof(buf), "port", p) > 0) {
2394             vde_port = strtol(buf, NULL, 10);
2395         } else {
2396             vde_port = 0;
2397         }
2398         if (get_param_value(vde_group, sizeof(vde_group), "group", p) <= 0) {
2399             vde_group[0] = '\0';
2400         }
2401         if (get_param_value(buf, sizeof(buf), "mode", p) > 0) {
2402             vde_mode = strtol(buf, NULL, 8);
2403         } else {
2404             vde_mode = 0700;
2405         }
2406         ret = net_vde_init(vlan, device, name, vde_sock, vde_port, vde_group, vde_mode);
2407     } else
2408 #endif
2409     if (!strcmp(device, "dump")) {
2410         int len = 65536;
2411
2412         if (get_param_value(buf, sizeof(buf), "len", p) > 0) {
2413             len = strtol(buf, NULL, 0);
2414         }
2415         if (!get_param_value(buf, sizeof(buf), "file", p)) {
2416             snprintf(buf, sizeof(buf), "qemu-vlan%d.pcap", vlan_id);
2417         }
2418         ret = net_dump_init(mon, vlan, device, name, buf, len);
2419     } else {
2420         config_error(mon, "Unknown network device: %s\n", device);
2421         ret = -1;
2422         goto out;
2423     }
2424     if (ret < 0) {
2425         config_error(mon, "Could not initialize device '%s'\n", device);
2426     }
2427 out:
2428     qemu_free(name);
2429     return ret;
2430 }
2431
2432 void net_client_uninit(NICInfo *nd)
2433 {
2434     nd->vlan->nb_guest_devs--;
2435     nb_nics--;
2436     nd->used = 0;
2437     free((void *)nd->model);
2438 }
2439
2440 static int net_host_check_device(const char *device)
2441 {
2442     int i;
2443     const char *valid_param_list[] = { "tap", "socket", "dump"
2444 #ifdef CONFIG_SLIRP
2445                                        ,"user"
2446 #endif
2447 #ifdef CONFIG_VDE
2448                                        ,"vde"
2449 #endif
2450     };
2451     for (i = 0; i < sizeof(valid_param_list) / sizeof(char *); i++) {
2452         if (!strncmp(valid_param_list[i], device,
2453                      strlen(valid_param_list[i])))
2454             return 1;
2455     }
2456
2457     return 0;
2458 }
2459
2460 void net_host_device_add(Monitor *mon, const char *device, const char *opts)
2461 {
2462     if (!net_host_check_device(device)) {
2463         monitor_printf(mon, "invalid host network device %s\n", device);
2464         return;
2465     }
2466     if (net_client_init(mon, device, opts ? opts : "") < 0) {
2467         monitor_printf(mon, "adding host network device %s failed\n", device);
2468     }
2469 }
2470
2471 void net_host_device_remove(Monitor *mon, int vlan_id, const char *device)
2472 {
2473     VLANState *vlan;
2474     VLANClientState *vc;
2475
2476     vlan = qemu_find_vlan(vlan_id);
2477
2478     for (vc = vlan->first_client; vc != NULL; vc = vc->next) {
2479         if (!strcmp(vc->name, device)) {
2480             break;
2481         }
2482     }
2483
2484     if (!vc) {
2485         monitor_printf(mon, "can't find device %s\n", device);
2486         return;
2487     }
2488     if (!net_host_check_device(vc->model)) {
2489         monitor_printf(mon, "invalid host network device %s\n", device);
2490         return;
2491     }
2492     qemu_del_vlan_client(vc);
2493 }
2494
2495 int net_client_parse(const char *str)
2496 {
2497     const char *p;
2498     char *q;
2499     char device[64];
2500
2501     p = str;
2502     q = device;
2503     while (*p != '\0' && *p != ',') {
2504         if ((q - device) < sizeof(device) - 1)
2505             *q++ = *p;
2506         p++;
2507     }
2508     *q = '\0';
2509     if (*p == ',')
2510         p++;
2511
2512     return net_client_init(NULL, device, p);
2513 }
2514
2515 void net_set_boot_mask(int net_boot_mask)
2516 {
2517     int i;
2518
2519     /* Only the first four NICs may be bootable */
2520     net_boot_mask = net_boot_mask & 0xF;
2521
2522     for (i = 0; i < nb_nics; i++) {
2523         if (net_boot_mask & (1 << i)) {
2524             nd_table[i].bootable = 1;
2525             net_boot_mask &= ~(1 << i);
2526         }
2527     }
2528
2529     if (net_boot_mask) {
2530         fprintf(stderr, "Cannot boot from non-existent NIC\n");
2531         exit(1);
2532     }
2533 }
2534
2535 void do_info_network(Monitor *mon)
2536 {
2537     VLANState *vlan;
2538     VLANClientState *vc;
2539
2540     for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
2541         monitor_printf(mon, "VLAN %d devices:\n", vlan->id);
2542         for(vc = vlan->first_client; vc != NULL; vc = vc->next)
2543             monitor_printf(mon, "  %s: %s\n", vc->name, vc->info_str);
2544     }
2545 }
2546
2547 int do_set_link(Monitor *mon, const char *name, const char *up_or_down)
2548 {
2549     VLANState *vlan;
2550     VLANClientState *vc = NULL;
2551
2552     for (vlan = first_vlan; vlan != NULL; vlan = vlan->next)
2553         for (vc = vlan->first_client; vc != NULL; vc = vc->next)
2554             if (strcmp(vc->name, name) == 0)
2555                 goto done;
2556 done:
2557
2558     if (!vc) {
2559         monitor_printf(mon, "could not find network device '%s'", name);
2560         return 0;
2561     }
2562
2563     if (strcmp(up_or_down, "up") == 0)
2564         vc->link_down = 0;
2565     else if (strcmp(up_or_down, "down") == 0)
2566         vc->link_down = 1;
2567     else
2568         monitor_printf(mon, "invalid link status '%s'; only 'up' or 'down' "
2569                        "valid\n", up_or_down);
2570
2571     if (vc->link_status_changed)
2572         vc->link_status_changed(vc);
2573
2574     return 1;
2575 }
2576
2577 void net_cleanup(void)
2578 {
2579     VLANState *vlan;
2580
2581     /* close network clients */
2582     for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
2583         VLANClientState *vc = vlan->first_client;
2584
2585         while (vc) {
2586             VLANClientState *next = vc->next;
2587
2588             qemu_del_vlan_client(vc);
2589
2590             vc = next;
2591         }
2592     }
2593 }
2594
2595 void net_client_check(void)
2596 {
2597     VLANState *vlan;
2598
2599     for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
2600         if (vlan->nb_guest_devs == 0 && vlan->nb_host_devs == 0)
2601             continue;
2602         if (vlan->nb_guest_devs == 0)
2603             fprintf(stderr, "Warning: vlan %d with no nics\n", vlan->id);
2604         if (vlan->nb_host_devs == 0)
2605             fprintf(stderr,
2606                     "Warning: vlan %d is not connected to host network\n",
2607                     vlan->id);
2608     }
2609 }