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 #include "tcpdump.h" 33 34 /* Needed early for HOST_BSD etc. */ 35 #include "config-host.h" 36 37 #ifndef _WIN32 38 #include <sys/times.h> 39 #include <sys/wait.h> 40 #include <termios.h> 41 #include <sys/mman.h> 42 #include <sys/ioctl.h> 43 #include <sys/resource.h> 44 #include <sys/socket.h> 45 #include <netinet/in.h> 46 #include <net/if.h> 47 #ifdef __NetBSD__ 48 #include <net/if_tap.h> 49 #endif 50 #ifdef __linux__ 51 #include <linux/if_tun.h> 52 #endif 53 #include <arpa/inet.h> 54 #include <dirent.h> 55 #include <netdb.h> 56 #include <sys/select.h> 57 #ifdef CONFIG_BSD 58 #include <sys/stat.h> 59 #if defined(__FreeBSD__) || defined(__DragonFly__) 60 #include <libutil.h> 61 #else 62 #include <util.h> 63 #endif 64 #elif defined (__GLIBC__) && defined (__FreeBSD_kernel__) 65 #include <freebsd/stdlib.h> 66 #else 67 #ifdef __linux__ 68 #include <pty.h> 69 #include <malloc.h> 70 #include <linux/rtc.h> 71 72 /* For the benefit of older linux systems which don't supply it, 73 we use a local copy of hpet.h. */ 74 /* #include <linux/hpet.h> */ 75 #include "hpet.h" 76 77 #include <linux/ppdev.h> 78 #include <linux/parport.h> 79 #endif 80 #ifdef __sun__ 81 #include <sys/stat.h> 82 #include <sys/ethernet.h> 83 #include <sys/sockio.h> 84 #include <netinet/arp.h> 85 #include <netinet/in.h> 86 #include <netinet/in_systm.h> 87 #include <netinet/ip.h> 88 #include <netinet/ip_icmp.h> // must come after ip.h 89 #include <netinet/udp.h> 90 #include <netinet/tcp.h> 91 #include <net/if.h> 92 #include <syslog.h> 93 #include <stropts.h> 94 #endif 95 #endif 96 #endif 97 98 #if defined(__OpenBSD__) 99 #include <util.h> 100 #endif 101 102 #if defined(CONFIG_VDE) 103 #include <libvdeplug.h> 104 #endif 105 106 #ifdef _WIN32 107 #include <windows.h> 108 #include <malloc.h> 109 #include <sys/timeb.h> 110 #include <mmsystem.h> 111 #define getopt_long_only getopt_long 112 #define memalign(align, size) malloc(size) 113 #endif 114 115 #include "qemu-common.h" 116 #include "net.h" 117 #include "monitor.h" 118 #include "sysemu.h" 119 #include "qemu-timer.h" 120 #include "qemu-char.h" 121 #include "audio/audio.h" 122 #include "qemu_socket.h" 123 #include "qemu-log.h" 124 125 #if defined(CONFIG_SLIRP) 126 #include "libslirp.h" 127 #endif 128 129 #if defined(CONFIG_SHAPER) 130 #include "shaper.h" 131 #endif 132 133 #include "android/android.h" 134 #include "telephony/modem_driver.h" 135 136 static VLANState *first_vlan; 137 138 /* see http://en.wikipedia.org/wiki/List_of_device_bandwidths or a complete list */ 139 const NetworkSpeed android_netspeeds[] = { 140 { "gsm", "GSM/CSD", 14400, 14400 }, 141 { "hscsd", "HSCSD", 14400, 43200 }, 142 { "gprs", "GPRS", 40000, 80000 }, 143 { "edge", "EDGE/EGPRS", 118400, 236800 }, 144 { "umts", "UMTS/3G", 128000, 1920000 }, 145 { "hsdpa", "HSDPA", 348000, 14400000 }, 146 { "full", "no limit", 0, 0 }, 147 { NULL, NULL, 0, 0 } 148 }; 149 150 const NetworkLatency android_netdelays[] = { 151 /* FIXME: these numbers are totally imaginary */ 152 { "gprs", "GPRS", 150, 550 }, 153 { "edge", "EDGE/EGPRS", 80, 400 }, 154 { "umts", "UMTS/3G", 35, 200 }, 155 { "none", "no latency", 0, 0 }, 156 { NULL, NULL, 0, 0 } 157 }; 158 159 /***********************************************************/ 160 /* network device redirectors */ 161 162 #if defined(DEBUG_NET) || defined(DEBUG_SLIRP) 163 static void hex_dump(FILE *f, const uint8_t *buf, int size) 164 { 165 int len, i, j, c; 166 167 for(i=0;i<size;i+=16) { 168 len = size - i; 169 if (len > 16) 170 len = 16; 171 fprintf(f, "%08x ", i); 172 for(j=0;j<16;j++) { 173 if (j < len) 174 fprintf(f, " %02x", buf[i+j]); 175 else 176 fprintf(f, " "); 177 } 178 fprintf(f, " "); 179 for(j=0;j<len;j++) { 180 c = buf[i+j]; 181 if (c < ' ' || c > '~') 182 c = '.'; 183 fprintf(f, "%c", c); 184 } 185 fprintf(f, "\n"); 186 } 187 } 188 #endif 189 190 static int parse_macaddr(uint8_t *macaddr, const char *p) 191 { 192 int i; 193 char *last_char; 194 long int offset; 195 196 errno = 0; 197 offset = strtol(p, &last_char, 0); 198 if (0 == errno && '\0' == *last_char && 199 offset >= 0 && offset <= 0xFFFFFF) { 200 macaddr[3] = (offset & 0xFF0000) >> 16; 201 macaddr[4] = (offset & 0xFF00) >> 8; 202 macaddr[5] = offset & 0xFF; 203 return 0; 204 } else { 205 for(i = 0; i < 6; i++) { 206 macaddr[i] = strtol(p, (char **)&p, 16); 207 if (i == 5) { 208 if (*p != '\0') 209 return -1; 210 } else { 211 if (*p != ':' && *p != '-') 212 return -1; 213 p++; 214 } 215 } 216 return 0; 217 } 218 219 return -1; 220 } 221 222 static int get_str_sep(char *buf, int buf_size, const char **pp, int sep) 223 { 224 const char *p, *p1; 225 int len; 226 p = *pp; 227 p1 = strchr(p, sep); 228 if (!p1) 229 return -1; 230 len = p1 - p; 231 p1++; 232 if (buf_size > 0) { 233 if (len > buf_size - 1) 234 len = buf_size - 1; 235 memcpy(buf, p, len); 236 buf[len] = '\0'; 237 } 238 *pp = p1; 239 return 0; 240 } 241 242 int parse_host_src_port(SockAddress *haddr, 243 SockAddress *saddr, 244 const char *input_str) 245 { 246 char *str = strdup(input_str); 247 char *host_str = str; 248 char *src_str; 249 const char *src_str2; 250 char *ptr; 251 252 /* 253 * Chop off any extra arguments at the end of the string which 254 * would start with a comma, then fill in the src port information 255 * if it was provided else use the "any address" and "any port". 256 */ 257 if ((ptr = strchr(str,','))) 258 *ptr = '\0'; 259 260 if ((src_str = strchr(input_str,'@'))) { 261 *src_str = '\0'; 262 src_str++; 263 } 264 265 if (parse_host_port(haddr, host_str) < 0) 266 goto fail; 267 268 src_str2 = src_str; 269 if (!src_str || *src_str == '\0') 270 src_str2 = ":0"; 271 272 if (parse_host_port(saddr, src_str2) < 0) 273 goto fail; 274 275 free(str); 276 return(0); 277 278 fail: 279 free(str); 280 return -1; 281 } 282 283 int parse_host_port(SockAddress *saddr, const char *str) 284 { 285 char buf[512]; 286 const char *p, *r; 287 uint32_t ip; 288 int port; 289 290 p = str; 291 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) 292 return -1; 293 294 if (buf[0] == '\0') { 295 ip = 0; 296 } else { 297 if (qemu_isdigit(buf[0])) { 298 if (inet_strtoip(buf, &ip) < 0) 299 return -1; 300 } else { 301 if (sock_address_init_resolve(saddr, buf, 0, 0) < 0) 302 return - 1; 303 ip = sock_address_get_ip(saddr); 304 } 305 } 306 port = strtol(p, (char **)&r, 0); 307 if (r == p) 308 return -1; 309 sock_address_init_inet(saddr, ip, port); 310 return 0; 311 } 312 313 #if !defined(_WIN32) && 0 314 static int parse_unix_path(struct sockaddr_un *uaddr, const char *str) 315 { 316 const char *p; 317 int len; 318 319 len = MIN(108, strlen(str)); 320 p = strchr(str, ','); 321 if (p) 322 len = MIN(len, p - str); 323 324 memset(uaddr, 0, sizeof(*uaddr)); 325 326 uaddr->sun_family = AF_UNIX; 327 memcpy(uaddr->sun_path, str, len); 328 329 return 0; 330 } 331 #endif 332 333 void qemu_format_nic_info_str(VLANClientState *vc, uint8_t macaddr[6]) 334 { 335 snprintf(vc->info_str, sizeof(vc->info_str), 336 "model=%s,macaddr=%02x:%02x:%02x:%02x:%02x:%02x", 337 vc->model, 338 macaddr[0], macaddr[1], macaddr[2], 339 macaddr[3], macaddr[4], macaddr[5]); 340 } 341 342 static char *assign_name(VLANClientState *vc1, const char *model) 343 { 344 VLANState *vlan; 345 char buf[256]; 346 int id = 0; 347 348 for (vlan = first_vlan; vlan; vlan = vlan->next) { 349 VLANClientState *vc; 350 351 for (vc = vlan->first_client; vc; vc = vc->next) 352 if (vc != vc1 && strcmp(vc->model, model) == 0) 353 id++; 354 } 355 356 snprintf(buf, sizeof(buf), "%s.%d", model, id); 357 358 return strdup(buf); 359 } 360 361 VLANClientState *qemu_new_vlan_client(VLANState *vlan, 362 const char *model, 363 const char *name, 364 NetCanReceive *can_receive, 365 NetReceive *receive, 366 NetReceiveIOV *receive_iov, 367 NetCleanup *cleanup, 368 void *opaque) 369 { 370 VLANClientState *vc, **pvc; 371 vc = qemu_mallocz(sizeof(VLANClientState)); 372 vc->model = strdup(model); 373 if (name) 374 vc->name = strdup(name); 375 else 376 vc->name = assign_name(vc, model); 377 vc->can_receive = can_receive; 378 vc->receive = receive; 379 vc->receive_iov = receive_iov; 380 vc->cleanup = cleanup; 381 vc->opaque = opaque; 382 vc->vlan = vlan; 383 384 vc->next = NULL; 385 pvc = &vlan->first_client; 386 while (*pvc != NULL) 387 pvc = &(*pvc)->next; 388 *pvc = vc; 389 return vc; 390 } 391 392 void qemu_del_vlan_client(VLANClientState *vc) 393 { 394 VLANClientState **pvc = &vc->vlan->first_client; 395 396 while (*pvc != NULL) 397 if (*pvc == vc) { 398 *pvc = vc->next; 399 if (vc->cleanup) { 400 vc->cleanup(vc); 401 } 402 free(vc->name); 403 free(vc->model); 404 qemu_free(vc); 405 break; 406 } else 407 pvc = &(*pvc)->next; 408 } 409 410 VLANClientState *qemu_find_vlan_client(VLANState *vlan, void *opaque) 411 { 412 VLANClientState **pvc = &vlan->first_client; 413 414 while (*pvc != NULL) 415 if ((*pvc)->opaque == opaque) 416 return *pvc; 417 else 418 pvc = &(*pvc)->next; 419 420 return NULL; 421 } 422 423 int qemu_can_send_packet(VLANClientState *sender) 424 { 425 VLANState *vlan = sender->vlan; 426 VLANClientState *vc; 427 428 for (vc = vlan->first_client; vc != NULL; vc = vc->next) { 429 if (vc == sender) { 430 continue; 431 } 432 433 /* no can_receive() handler, they can always receive */ 434 if (!vc->can_receive || vc->can_receive(vc)) { 435 return 1; 436 } 437 } 438 return 0; 439 } 440 441 static int 442 qemu_deliver_packet(VLANClientState *sender, const uint8_t *buf, int size) 443 { 444 VLANClientState *vc; 445 int ret = -1; 446 447 sender->vlan->delivering = 1; 448 449 for (vc = sender->vlan->first_client; vc != NULL; vc = vc->next) { 450 ssize_t len; 451 452 if (vc == sender) { 453 continue; 454 } 455 456 if (vc->link_down) { 457 ret = size; 458 continue; 459 } 460 461 len = vc->receive(vc, buf, size); 462 463 ret = (ret >= 0) ? ret : len; 464 } 465 466 sender->vlan->delivering = 0; 467 468 return ret; 469 } 470 471 void qemu_flush_queued_packets(VLANClientState *vc) 472 { 473 VLANPacket *packet; 474 475 while ((packet = vc->vlan->send_queue) != NULL) { 476 int ret; 477 478 vc->vlan->send_queue = packet->next; 479 480 ret = qemu_deliver_packet(packet->sender, packet->data, packet->size); 481 if (ret == 0 && packet->sent_cb != NULL) { 482 packet->next = vc->vlan->send_queue; 483 vc->vlan->send_queue = packet; 484 break; 485 } 486 487 if (packet->sent_cb) 488 packet->sent_cb(packet->sender); 489 490 qemu_free(packet); 491 } 492 } 493 494 static void qemu_enqueue_packet(VLANClientState *sender, 495 const uint8_t *buf, int size, 496 NetPacketSent *sent_cb) 497 { 498 VLANPacket *packet; 499 500 packet = qemu_malloc(sizeof(VLANPacket) + size); 501 packet->next = sender->vlan->send_queue; 502 packet->sender = sender; 503 packet->size = size; 504 packet->sent_cb = sent_cb; 505 memcpy(packet->data, buf, size); 506 sender->vlan->send_queue = packet; 507 } 508 509 ssize_t qemu_send_packet_async(VLANClientState *sender, 510 const uint8_t *buf, int size, 511 NetPacketSent *sent_cb) 512 { 513 int ret; 514 515 if (sender->link_down) { 516 return size; 517 } 518 519 #ifdef DEBUG_NET 520 printf("vlan %d send:\n", sender->vlan->id); 521 hex_dump(stdout, buf, size); 522 #endif 523 524 if (sender->vlan->delivering) { 525 qemu_enqueue_packet(sender, buf, size, NULL); 526 return size; 527 } 528 529 ret = qemu_deliver_packet(sender, buf, size); 530 if (ret == 0 && sent_cb != NULL) { 531 qemu_enqueue_packet(sender, buf, size, sent_cb); 532 return 0; 533 } 534 535 qemu_flush_queued_packets(sender); 536 537 return ret; 538 } 539 540 void qemu_send_packet(VLANClientState *vc, const uint8_t *buf, int size) 541 { 542 qemu_send_packet_async(vc, buf, size, NULL); 543 } 544 545 static ssize_t vc_sendv_compat(VLANClientState *vc, const struct iovec *iov, 546 int iovcnt) 547 { 548 uint8_t buffer[4096]; 549 size_t offset = 0; 550 int i; 551 552 for (i = 0; i < iovcnt; i++) { 553 size_t len; 554 555 len = MIN(sizeof(buffer) - offset, iov[i].iov_len); 556 memcpy(buffer + offset, iov[i].iov_base, len); 557 offset += len; 558 } 559 560 return vc->receive(vc, buffer, offset); 561 } 562 563 static ssize_t calc_iov_length(const struct iovec *iov, int iovcnt) 564 { 565 size_t offset = 0; 566 int i; 567 568 for (i = 0; i < iovcnt; i++) 569 offset += iov[i].iov_len; 570 return offset; 571 } 572 573 static int qemu_deliver_packet_iov(VLANClientState *sender, 574 const struct iovec *iov, int iovcnt) 575 { 576 VLANClientState *vc; 577 int ret = -1; 578 579 sender->vlan->delivering = 1; 580 581 for (vc = sender->vlan->first_client; vc != NULL; vc = vc->next) { 582 ssize_t len; 583 584 if (vc == sender) { 585 continue; 586 } 587 588 if (vc->link_down) { 589 ret = calc_iov_length(iov, iovcnt); 590 continue; 591 } 592 593 if (vc->receive_iov) { 594 len = vc->receive_iov(vc, iov, iovcnt); 595 } else { 596 len = vc_sendv_compat(vc, iov, iovcnt); 597 } 598 599 ret = (ret >= 0) ? ret : len; 600 } 601 602 sender->vlan->delivering = 0; 603 604 return ret; 605 } 606 607 static ssize_t qemu_enqueue_packet_iov(VLANClientState *sender, 608 const struct iovec *iov, int iovcnt, 609 NetPacketSent *sent_cb) 610 { 611 VLANPacket *packet; 612 size_t max_len = 0; 613 int i; 614 615 max_len = calc_iov_length(iov, iovcnt); 616 617 packet = qemu_malloc(sizeof(VLANPacket) + max_len); 618 packet->next = sender->vlan->send_queue; 619 packet->sender = sender; 620 packet->sent_cb = sent_cb; 621 packet->size = 0; 622 623 for (i = 0; i < iovcnt; i++) { 624 size_t len = iov[i].iov_len; 625 626 memcpy(packet->data + packet->size, iov[i].iov_base, len); 627 packet->size += len; 628 } 629 630 sender->vlan->send_queue = packet; 631 632 return packet->size; 633 } 634 635 ssize_t qemu_sendv_packet_async(VLANClientState *sender, 636 const struct iovec *iov, int iovcnt, 637 NetPacketSent *sent_cb) 638 { 639 int ret; 640 641 if (sender->link_down) { 642 return calc_iov_length(iov, iovcnt); 643 } 644 645 if (sender->vlan->delivering) { 646 return qemu_enqueue_packet_iov(sender, iov, iovcnt, NULL); 647 } 648 649 ret = qemu_deliver_packet_iov(sender, iov, iovcnt); 650 if (ret == 0 && sent_cb != NULL) { 651 qemu_enqueue_packet_iov(sender, iov, iovcnt, sent_cb); 652 return 0; 653 } 654 655 qemu_flush_queued_packets(sender); 656 657 return ret; 658 } 659 660 ssize_t 661 qemu_sendv_packet(VLANClientState *vc, const struct iovec *iov, int iovcnt) 662 { 663 return qemu_sendv_packet_async(vc, iov, iovcnt, NULL); 664 } 665 666 static void config_error(Monitor *mon, const char *fmt, ...) 667 { 668 va_list ap; 669 670 va_start(ap, fmt); 671 if (mon) { 672 monitor_vprintf(mon, fmt, ap); 673 } else { 674 fprintf(stderr, "qemu: "); 675 vfprintf(stderr, fmt, ap); 676 exit(1); 677 } 678 va_end(ap); 679 } 680 681 #if defined(CONFIG_SLIRP) 682 683 /* slirp network adapter */ 684 685 struct slirp_config_str { 686 struct slirp_config_str *next; 687 const char *str; 688 }; 689 690 static int slirp_inited; 691 static struct slirp_config_str *slirp_redirs; 692 #ifndef _WIN32 693 static const char *slirp_smb_export; 694 #endif 695 static VLANClientState *slirp_vc; 696 697 #ifndef _WIN32 698 static void slirp_smb(const char *exported_dir); 699 #endif 700 static void slirp_redirection(Monitor *mon, const char *redir_str); 701 702 double qemu_net_upload_speed = 0.; 703 double qemu_net_download_speed = 0.; 704 int qemu_net_min_latency = 0; 705 int qemu_net_max_latency = 0; 706 int qemu_net_disable = 0; 707 708 int 709 ip_packet_is_internal( const uint8_t* data, size_t size ) 710 { 711 const uint8_t* end = data + size; 712 713 /* must have room for Mac + IP header */ 714 if (data + 40 > end) 715 return 0; 716 717 if (data[12] != 0x08 || data[13] != 0x00 ) 718 return 0; 719 720 /* must have valid IP header */ 721 data += 14; 722 if ((data[0] >> 4) != 4 || (data[0] & 15) < 5) 723 return 0; 724 725 /* internal if both source and dest addresses are in 10.x.x.x */ 726 return ( data[12] == 10 && data[16] == 10); 727 } 728 729 #ifdef CONFIG_SHAPER 730 731 NetShaper slirp_shaper_in; 732 NetShaper slirp_shaper_out; 733 NetDelay slirp_delay_in; 734 735 static void 736 slirp_delay_in_cb( void* data, 737 size_t size, 738 void* opaque ) 739 { 740 slirp_input( (const uint8_t*)data, (int)size ); 741 opaque = opaque; 742 } 743 744 static void 745 slirp_shaper_in_cb( void* data, 746 size_t size, 747 void* opaque ) 748 { 749 netdelay_send_aux( slirp_delay_in, data, size, opaque ); 750 } 751 752 static void 753 slirp_shaper_out_cb( void* data, 754 size_t size, 755 void* opaque ) 756 { 757 qemu_send_packet( slirp_vc, (const uint8_t*)data, (int)size ); 758 } 759 760 void 761 slirp_init_shapers( void ) 762 { 763 slirp_delay_in = netdelay_create( slirp_delay_in_cb ); 764 slirp_shaper_in = netshaper_create( 1, slirp_shaper_in_cb ); 765 slirp_shaper_out = netshaper_create( 1, slirp_shaper_out_cb ); 766 767 netdelay_set_latency( slirp_delay_in, qemu_net_min_latency, qemu_net_max_latency ); 768 netshaper_set_rate( slirp_shaper_out, qemu_net_download_speed ); 769 netshaper_set_rate( slirp_shaper_in, qemu_net_upload_speed ); 770 } 771 772 #endif /* CONFIG_SHAPER */ 773 774 775 int slirp_can_output(void) 776 { 777 #ifdef CONFIG_SHAPER 778 return !slirp_vc || 779 ( netshaper_can_send(slirp_shaper_out) && 780 qemu_can_send_packet(slirp_vc) ); 781 #else 782 return !slirp_vc || qemu_can_send_packet(slirp_vc); 783 #endif 784 } 785 786 void slirp_output(const uint8_t *pkt, int pkt_len) 787 { 788 #ifdef DEBUG_SLIRP 789 printf("slirp output:\n"); 790 hex_dump(stdout, pkt, pkt_len); 791 #endif 792 if (qemu_tcpdump_active) 793 qemu_tcpdump_packet(pkt, pkt_len); 794 795 if (!slirp_vc) 796 return; 797 798 #ifdef CONFIG_SHAPER 799 netshaper_send(slirp_shaper_out, (void*)pkt, pkt_len); 800 #else 801 qemu_send_packet(slirp_vc, pkt, pkt_len); 802 #endif 803 } 804 805 int slirp_is_inited(void) 806 { 807 return slirp_inited; 808 } 809 810 static ssize_t slirp_receive(VLANClientState *vc, const uint8_t *buf, size_t size) 811 { 812 #ifdef DEBUG_SLIRP 813 printf("slirp input:\n"); 814 hex_dump(stdout, buf, size); 815 #endif 816 if (qemu_tcpdump_active) 817 qemu_tcpdump_packet(buf, size); 818 819 #ifdef CONFIG_SHAPER 820 netshaper_send(slirp_shaper_in, (char*)buf, size); 821 #else 822 slirp_input(buf, size); 823 #endif 824 return size; 825 } 826 827 static int slirp_in_use; 828 829 static void net_slirp_cleanup(VLANClientState *vc) 830 { 831 slirp_in_use = 0; 832 } 833 834 static int net_slirp_init(VLANState *vlan, const char *model, const char *name, 835 int restricted, const char *ip) 836 { 837 if (slirp_in_use) { 838 /* slirp only supports a single instance so far */ 839 return -1; 840 } 841 if (!slirp_inited) { 842 slirp_inited = 1; 843 slirp_init(restricted, ip); 844 845 while (slirp_redirs) { 846 struct slirp_config_str *config = slirp_redirs; 847 848 slirp_redirection(NULL, config->str); 849 slirp_redirs = config->next; 850 qemu_free(config); 851 } 852 #ifndef _WIN32 853 if (slirp_smb_export) { 854 slirp_smb(slirp_smb_export); 855 } 856 #endif 857 slirp_init_shapers(); 858 } 859 860 slirp_vc = qemu_new_vlan_client(vlan, model, name, NULL, slirp_receive, 861 NULL, net_slirp_cleanup, NULL); 862 slirp_vc->info_str[0] = '\0'; 863 slirp_in_use = 1; 864 return 0; 865 } 866 867 static void net_slirp_redir_print(void *opaque, int is_udp, 868 const SockAddress *laddr, 869 const SockAddress *faddr) 870 { 871 Monitor *mon = (Monitor *)opaque; 872 uint32_t h_addr; 873 uint32_t g_addr; 874 char buf[16]; 875 876 h_addr = sock_address_get_ip(faddr); 877 g_addr = sock_address_get_ip(laddr); 878 879 monitor_printf(mon, " %s |", is_udp ? "udp" : "tcp" ); 880 snprintf(buf, 15, "%d.%d.%d.%d", (h_addr >> 24) & 0xff, 881 (h_addr >> 16) & 0xff, 882 (h_addr >> 8) & 0xff, 883 (h_addr) & 0xff); 884 monitor_printf(mon, " %15s |", buf); 885 monitor_printf(mon, " %5d |", sock_address_get_port(faddr)); 886 887 snprintf(buf, 15, "%d.%d.%d.%d", (g_addr >> 24) & 0xff, 888 (g_addr >> 16) & 0xff, 889 (g_addr >> 8) & 0xff, 890 (g_addr) & 0xff); 891 monitor_printf(mon, " %15s |", buf); 892 monitor_printf(mon, " %5d\n", sock_address_get_port(laddr)); 893 894 } 895 896 static void net_slirp_redir_list(Monitor *mon) 897 { 898 if (!mon) 899 return; 900 901 monitor_printf(mon, " Prot | Host Addr | HPort | Guest Addr | GPort\n"); 902 monitor_printf(mon, " | | | | \n"); 903 slirp_redir_loop(net_slirp_redir_print, mon); 904 } 905 906 static void net_slirp_redir_rm(Monitor *mon, const char *port_str) 907 { 908 int host_port; 909 char buf[256] = ""; 910 const char *p = port_str; 911 int is_udp = 0; 912 int n; 913 914 if (!mon) 915 return; 916 917 if (!port_str || !port_str[0]) 918 goto fail_syntax; 919 920 get_str_sep(buf, sizeof(buf), &p, ':'); 921 922 if (!strcmp(buf, "tcp") || buf[0] == '\0') { 923 is_udp = 0; 924 } else if (!strcmp(buf, "udp")) { 925 is_udp = 1; 926 } else { 927 goto fail_syntax; 928 } 929 930 host_port = atoi(p); 931 932 n = slirp_redir_rm(is_udp, host_port); 933 934 monitor_printf(mon, "removed %d redirections to %s port %d\n", n, 935 is_udp ? "udp" : "tcp", host_port); 936 return; 937 938 fail_syntax: 939 monitor_printf(mon, "invalid format\n"); 940 } 941 942 static void slirp_redirection(Monitor *mon, const char *redir_str) 943 { 944 uint32_t guest_addr; 945 int host_port, guest_port; 946 const char *p; 947 char buf[256], *r; 948 int is_udp; 949 950 p = redir_str; 951 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) { 952 goto fail_syntax; 953 } 954 if (!strcmp(buf, "tcp") || buf[0] == '\0') { 955 is_udp = 0; 956 } else if (!strcmp(buf, "udp")) { 957 is_udp = 1; 958 } else { 959 goto fail_syntax; 960 } 961 962 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) { 963 goto fail_syntax; 964 } 965 host_port = strtol(buf, &r, 0); 966 if (r == buf) { 967 goto fail_syntax; 968 } 969 970 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) { 971 goto fail_syntax; 972 } 973 if (buf[0] == '\0') { 974 pstrcpy(buf, sizeof(buf), "10.0.2.15"); 975 } 976 if (inet_strtoip(buf, &guest_addr) < 0) { 977 goto fail_syntax; 978 } 979 980 guest_port = strtol(p, &r, 0); 981 if (r == p) { 982 goto fail_syntax; 983 } 984 985 if (slirp_redir(is_udp, host_port, guest_addr, guest_port) < 0) { 986 config_error(mon, "could not set up redirection '%s'\n", redir_str); 987 } 988 return; 989 990 fail_syntax: 991 config_error(mon, "invalid redirection format '%s'\n", redir_str); 992 } 993 994 void net_slirp_redir(Monitor *mon, const char *redir_str, const char *redir_opt2) 995 { 996 struct slirp_config_str *config; 997 998 if (!slirp_inited) { 999 if (mon) { 1000 monitor_printf(mon, "user mode network stack not in use\n"); 1001 } else { 1002 config = qemu_malloc(sizeof(*config)); 1003 config->str = redir_str; 1004 config->next = slirp_redirs; 1005 slirp_redirs = config; 1006 } 1007 return; 1008 } 1009 1010 if (!strcmp(redir_str, "remove")) { 1011 net_slirp_redir_rm(mon, redir_opt2); 1012 return; 1013 } 1014 1015 if (!strcmp(redir_str, "list")) { 1016 net_slirp_redir_list(mon); 1017 return; 1018 } 1019 1020 slirp_redirection(mon, redir_str); 1021 } 1022 1023 #ifndef _WIN32 1024 1025 static char smb_dir[1024]; 1026 1027 static void erase_dir(char *dir_name) 1028 { 1029 DIR *d; 1030 struct dirent *de; 1031 char filename[1024]; 1032 1033 /* erase all the files in the directory */ 1034 if ((d = opendir(dir_name)) != NULL) { 1035 for(;;) { 1036 de = readdir(d); 1037 if (!de) 1038 break; 1039 if (strcmp(de->d_name, ".") != 0 && 1040 strcmp(de->d_name, "..") != 0) { 1041 snprintf(filename, sizeof(filename), "%s/%s", 1042 smb_dir, de->d_name); 1043 if (unlink(filename) != 0) /* is it a directory? */ 1044 erase_dir(filename); 1045 } 1046 } 1047 closedir(d); 1048 rmdir(dir_name); 1049 } 1050 } 1051 1052 /* automatic user mode samba server configuration */ 1053 static void smb_exit(void) 1054 { 1055 erase_dir(smb_dir); 1056 } 1057 1058 static void slirp_smb(const char *exported_dir) 1059 { 1060 char smb_conf[1024]; 1061 char smb_cmdline[1024]; 1062 FILE *f; 1063 1064 /* XXX: better tmp dir construction */ 1065 snprintf(smb_dir, sizeof(smb_dir), "/tmp/qemu-smb.%ld", (long)getpid()); 1066 if (mkdir(smb_dir, 0700) < 0) { 1067 fprintf(stderr, "qemu: could not create samba server dir '%s'\n", smb_dir); 1068 exit(1); 1069 } 1070 snprintf(smb_conf, sizeof(smb_conf), "%s/%s", smb_dir, "smb.conf"); 1071 1072 f = fopen(smb_conf, "w"); 1073 if (!f) { 1074 fprintf(stderr, "qemu: could not create samba server configuration file '%s'\n", smb_conf); 1075 exit(1); 1076 } 1077 fprintf(f, 1078 "[global]\n" 1079 "private dir=%s\n" 1080 "smb ports=0\n" 1081 "socket address=127.0.0.1\n" 1082 "pid directory=%s\n" 1083 "lock directory=%s\n" 1084 "log file=%s/log.smbd\n" 1085 "smb passwd file=%s/smbpasswd\n" 1086 "security = share\n" 1087 "[qemu]\n" 1088 "path=%s\n" 1089 "read only=no\n" 1090 "guest ok=yes\n", 1091 smb_dir, 1092 smb_dir, 1093 smb_dir, 1094 smb_dir, 1095 smb_dir, 1096 exported_dir 1097 ); 1098 fclose(f); 1099 atexit(smb_exit); 1100 1101 snprintf(smb_cmdline, sizeof(smb_cmdline), "%s -s %s", 1102 SMBD_COMMAND, smb_conf); 1103 1104 slirp_add_exec(0, smb_cmdline, 4, 139); 1105 } 1106 1107 /* automatic user mode samba server configuration */ 1108 void net_slirp_smb(const char *exported_dir) 1109 { 1110 if (slirp_smb_export) { 1111 fprintf(stderr, "-smb given twice\n"); 1112 exit(1); 1113 } 1114 slirp_smb_export = exported_dir; 1115 if (slirp_inited) { 1116 slirp_smb(exported_dir); 1117 } 1118 } 1119 1120 #endif /* !defined(_WIN32) */ 1121 1122 void do_info_slirp(Monitor *mon) 1123 { 1124 //slirp_stats(); 1125 } 1126 1127 struct VMChannel { 1128 CharDriverState *hd; 1129 int port; 1130 }; 1131 1132 static int vmchannel_can_read(void *opaque) 1133 { 1134 struct VMChannel *vmc = (struct VMChannel*)opaque; 1135 return slirp_socket_can_recv(4, vmc->port); 1136 } 1137 1138 static void vmchannel_read(void *opaque, const uint8_t *buf, int size) 1139 { 1140 struct VMChannel *vmc = (struct VMChannel*)opaque; 1141 slirp_socket_recv(4, vmc->port, buf, size); 1142 } 1143 1144 #endif /* CONFIG_SLIRP */ 1145 1146 #if !defined(_WIN32) 1147 1148 typedef struct TAPState { 1149 VLANClientState *vc; 1150 int fd; 1151 char down_script[1024]; 1152 char down_script_arg[128]; 1153 uint8_t buf[4096]; 1154 } TAPState; 1155 1156 static int launch_script(const char *setup_script, const char *ifname, int fd); 1157 1158 static ssize_t tap_receive_iov(VLANClientState *vc, const struct iovec *iov, 1159 int iovcnt) 1160 { 1161 TAPState *s = vc->opaque; 1162 ssize_t len; 1163 1164 do { 1165 len = writev(s->fd, iov, iovcnt); 1166 } while (len == -1 && (errno == EINTR || errno == EAGAIN)); 1167 1168 return len; 1169 } 1170 1171 static ssize_t tap_receive(VLANClientState *vc, const uint8_t *buf, size_t size) 1172 { 1173 TAPState *s = vc->opaque; 1174 ssize_t len; 1175 1176 do { 1177 len = write(s->fd, buf, size); 1178 } while (len == -1 && (errno == EINTR || errno == EAGAIN)); 1179 1180 return len; 1181 } 1182 1183 static int tap_can_send(void *opaque) 1184 { 1185 TAPState *s = opaque; 1186 1187 return qemu_can_send_packet(s->vc); 1188 } 1189 1190 #ifdef __sun__ 1191 static ssize_t tap_read_packet(int tapfd, uint8_t *buf, int maxlen) 1192 { 1193 struct strbuf sbuf; 1194 int f = 0; 1195 1196 sbuf.maxlen = maxlen; 1197 sbuf.buf = (char *)buf; 1198 1199 return getmsg(tapfd, NULL, &sbuf, &f) >= 0 ? sbuf.len : -1; 1200 } 1201 #else 1202 static ssize_t tap_read_packet(int tapfd, uint8_t *buf, int maxlen) 1203 { 1204 return read(tapfd, buf, maxlen); 1205 } 1206 #endif 1207 1208 static void tap_send(void *opaque); 1209 1210 static void tap_send_completed(VLANClientState *vc) 1211 { 1212 TAPState *s = vc->opaque; 1213 1214 qemu_set_fd_handler2(s->fd, tap_can_send, tap_send, NULL, s); 1215 } 1216 1217 static void tap_send(void *opaque) 1218 { 1219 TAPState *s = opaque; 1220 int size; 1221 1222 do { 1223 size = tap_read_packet(s->fd, s->buf, sizeof(s->buf)); 1224 if (size <= 0) { 1225 break; 1226 } 1227 1228 size = qemu_send_packet_async(s->vc, s->buf, size, tap_send_completed); 1229 if (size == 0) { 1230 qemu_set_fd_handler2(s->fd, NULL, NULL, NULL, NULL); 1231 } 1232 } while (size > 0); 1233 } 1234 1235 static void tap_cleanup(VLANClientState *vc) 1236 { 1237 TAPState *s = vc->opaque; 1238 1239 if (s->down_script[0]) 1240 launch_script(s->down_script, s->down_script_arg, s->fd); 1241 1242 qemu_set_fd_handler(s->fd, NULL, NULL, NULL); 1243 close(s->fd); 1244 qemu_free(s); 1245 } 1246 1247 /* fd support */ 1248 1249 static TAPState *net_tap_fd_init(VLANState *vlan, 1250 const char *model, 1251 const char *name, 1252 int fd) 1253 { 1254 TAPState *s; 1255 1256 s = qemu_mallocz(sizeof(TAPState)); 1257 s->fd = fd; 1258 s->vc = qemu_new_vlan_client(vlan, model, name, NULL, tap_receive, 1259 tap_receive_iov, tap_cleanup, s); 1260 qemu_set_fd_handler2(s->fd, tap_can_send, tap_send, NULL, s); 1261 snprintf(s->vc->info_str, sizeof(s->vc->info_str), "fd=%d", fd); 1262 return s; 1263 } 1264 1265 #if defined (CONFIG_BSD) || defined (__FreeBSD_kernel__) 1266 static int tap_open(char *ifname, int ifname_size) 1267 { 1268 int fd; 1269 char *dev; 1270 struct stat s; 1271 1272 TFR(fd = open("/dev/tap", O_RDWR)); 1273 if (fd < 0) { 1274 fprintf(stderr, "warning: could not open /dev/tap: no virtual network emulation\n"); 1275 return -1; 1276 } 1277 1278 fstat(fd, &s); 1279 dev = devname(s.st_rdev, S_IFCHR); 1280 pstrcpy(ifname, ifname_size, dev); 1281 1282 fcntl(fd, F_SETFL, O_NONBLOCK); 1283 return fd; 1284 } 1285 #elif defined(__sun__) 1286 #define TUNNEWPPA (('T'<<16) | 0x0001) 1287 /* 1288 * Allocate TAP device, returns opened fd. 1289 * Stores dev name in the first arg(must be large enough). 1290 */ 1291 static int tap_alloc(char *dev, size_t dev_size) 1292 { 1293 int tap_fd, if_fd, ppa = -1; 1294 static int ip_fd = 0; 1295 char *ptr; 1296 1297 static int arp_fd = 0; 1298 int ip_muxid, arp_muxid; 1299 struct strioctl strioc_if, strioc_ppa; 1300 int link_type = I_PLINK;; 1301 struct lifreq ifr; 1302 char actual_name[32] = ""; 1303 1304 memset(&ifr, 0x0, sizeof(ifr)); 1305 1306 if( *dev ){ 1307 ptr = dev; 1308 while( *ptr && !qemu_isdigit((int)*ptr) ) ptr++; 1309 ppa = atoi(ptr); 1310 } 1311 1312 /* Check if IP device was opened */ 1313 if( ip_fd ) 1314 close(ip_fd); 1315 1316 TFR(ip_fd = open("/dev/udp", O_RDWR, 0)); 1317 if (ip_fd < 0) { 1318 syslog(LOG_ERR, "Can't open /dev/ip (actually /dev/udp)"); 1319 return -1; 1320 } 1321 1322 TFR(tap_fd = open("/dev/tap", O_RDWR, 0)); 1323 if (tap_fd < 0) { 1324 syslog(LOG_ERR, "Can't open /dev/tap"); 1325 return -1; 1326 } 1327 1328 /* Assign a new PPA and get its unit number. */ 1329 strioc_ppa.ic_cmd = TUNNEWPPA; 1330 strioc_ppa.ic_timout = 0; 1331 strioc_ppa.ic_len = sizeof(ppa); 1332 strioc_ppa.ic_dp = (char *)&ppa; 1333 if ((ppa = ioctl (tap_fd, I_STR, &strioc_ppa)) < 0) 1334 syslog (LOG_ERR, "Can't assign new interface"); 1335 1336 TFR(if_fd = open("/dev/tap", O_RDWR, 0)); 1337 if (if_fd < 0) { 1338 syslog(LOG_ERR, "Can't open /dev/tap (2)"); 1339 return -1; 1340 } 1341 if(ioctl(if_fd, I_PUSH, "ip") < 0){ 1342 syslog(LOG_ERR, "Can't push IP module"); 1343 return -1; 1344 } 1345 1346 if (ioctl(if_fd, SIOCGLIFFLAGS, &ifr) < 0) 1347 syslog(LOG_ERR, "Can't get flags\n"); 1348 1349 snprintf (actual_name, 32, "tap%d", ppa); 1350 pstrcpy(ifr.lifr_name, sizeof(ifr.lifr_name), actual_name); 1351 1352 ifr.lifr_ppa = ppa; 1353 /* Assign ppa according to the unit number returned by tun device */ 1354 1355 if (ioctl (if_fd, SIOCSLIFNAME, &ifr) < 0) 1356 syslog (LOG_ERR, "Can't set PPA %d", ppa); 1357 if (ioctl(if_fd, SIOCGLIFFLAGS, &ifr) <0) 1358 syslog (LOG_ERR, "Can't get flags\n"); 1359 /* Push arp module to if_fd */ 1360 if (ioctl (if_fd, I_PUSH, "arp") < 0) 1361 syslog (LOG_ERR, "Can't push ARP module (2)"); 1362 1363 /* Push arp module to ip_fd */ 1364 if (ioctl (ip_fd, I_POP, NULL) < 0) 1365 syslog (LOG_ERR, "I_POP failed\n"); 1366 if (ioctl (ip_fd, I_PUSH, "arp") < 0) 1367 syslog (LOG_ERR, "Can't push ARP module (3)\n"); 1368 /* Open arp_fd */ 1369 TFR(arp_fd = open ("/dev/tap", O_RDWR, 0)); 1370 if (arp_fd < 0) 1371 syslog (LOG_ERR, "Can't open %s\n", "/dev/tap"); 1372 1373 /* Set ifname to arp */ 1374 strioc_if.ic_cmd = SIOCSLIFNAME; 1375 strioc_if.ic_timout = 0; 1376 strioc_if.ic_len = sizeof(ifr); 1377 strioc_if.ic_dp = (char *)𝔦 1378 if (ioctl(arp_fd, I_STR, &strioc_if) < 0){ 1379 syslog (LOG_ERR, "Can't set ifname to arp\n"); 1380 } 1381 1382 if((ip_muxid = ioctl(ip_fd, I_LINK, if_fd)) < 0){ 1383 syslog(LOG_ERR, "Can't link TAP device to IP"); 1384 return -1; 1385 } 1386 1387 if ((arp_muxid = ioctl (ip_fd, link_type, arp_fd)) < 0) 1388 syslog (LOG_ERR, "Can't link TAP device to ARP"); 1389 1390 close (if_fd); 1391 1392 memset(&ifr, 0x0, sizeof(ifr)); 1393 pstrcpy(ifr.lifr_name, sizeof(ifr.lifr_name), actual_name); 1394 ifr.lifr_ip_muxid = ip_muxid; 1395 ifr.lifr_arp_muxid = arp_muxid; 1396 1397 if (ioctl (ip_fd, SIOCSLIFMUXID, &ifr) < 0) 1398 { 1399 ioctl (ip_fd, I_PUNLINK , arp_muxid); 1400 ioctl (ip_fd, I_PUNLINK, ip_muxid); 1401 syslog (LOG_ERR, "Can't set multiplexor id"); 1402 } 1403 1404 snprintf(dev, dev_size, "tap%d", ppa); 1405 return tap_fd; 1406 } 1407 1408 static int tap_open(char *ifname, int ifname_size) 1409 { 1410 char dev[10]=""; 1411 int fd; 1412 if( (fd = tap_alloc(dev, sizeof(dev))) < 0 ){ 1413 fprintf(stderr, "Cannot allocate TAP device\n"); 1414 return -1; 1415 } 1416 pstrcpy(ifname, ifname_size, dev); 1417 fcntl(fd, F_SETFL, O_NONBLOCK); 1418 return fd; 1419 } 1420 #elif defined (_AIX) 1421 static int tap_open(char *ifname, int ifname_size) 1422 { 1423 fprintf (stderr, "no tap on AIX\n"); 1424 return -1; 1425 } 1426 #else 1427 static int tap_open(char *ifname, int ifname_size) 1428 { 1429 struct ifreq ifr; 1430 int fd, ret; 1431 1432 TFR(fd = open("/dev/net/tun", O_RDWR)); 1433 if (fd < 0) { 1434 fprintf(stderr, "warning: could not open /dev/net/tun: no virtual network emulation\n"); 1435 return -1; 1436 } 1437 memset(&ifr, 0, sizeof(ifr)); 1438 ifr.ifr_flags = IFF_TAP | IFF_NO_PI; 1439 if (ifname[0] != '\0') 1440 pstrcpy(ifr.ifr_name, IFNAMSIZ, ifname); 1441 else 1442 pstrcpy(ifr.ifr_name, IFNAMSIZ, "tap%d"); 1443 ret = ioctl(fd, TUNSETIFF, (void *) &ifr); 1444 if (ret != 0) { 1445 fprintf(stderr, "warning: could not configure /dev/net/tun: no virtual network emulation\n"); 1446 close(fd); 1447 return -1; 1448 } 1449 pstrcpy(ifname, ifname_size, ifr.ifr_name); 1450 fcntl(fd, F_SETFL, O_NONBLOCK); 1451 return fd; 1452 } 1453 #endif 1454 1455 static int launch_script(const char *setup_script, const char *ifname, int fd) 1456 { 1457 sigset_t oldmask, mask; 1458 int pid, status; 1459 char *args[3]; 1460 char **parg; 1461 1462 sigemptyset(&mask); 1463 sigaddset(&mask, SIGCHLD); 1464 sigprocmask(SIG_BLOCK, &mask, &oldmask); 1465 1466 /* try to launch network script */ 1467 pid = fork(); 1468 if (pid == 0) { 1469 int open_max = sysconf(_SC_OPEN_MAX), i; 1470 1471 for (i = 0; i < open_max; i++) { 1472 if (i != STDIN_FILENO && 1473 i != STDOUT_FILENO && 1474 i != STDERR_FILENO && 1475 i != fd) { 1476 close(i); 1477 } 1478 } 1479 parg = args; 1480 *parg++ = (char *)setup_script; 1481 *parg++ = (char *)ifname; 1482 *parg++ = NULL; 1483 execv(setup_script, args); 1484 _exit(1); 1485 } else if (pid > 0) { 1486 while (waitpid(pid, &status, 0) != pid) { 1487 /* loop */ 1488 } 1489 sigprocmask(SIG_SETMASK, &oldmask, NULL); 1490 1491 if (WIFEXITED(status) && WEXITSTATUS(status) == 0) { 1492 return 0; 1493 } 1494 } 1495 fprintf(stderr, "%s: could not launch network script\n", setup_script); 1496 return -1; 1497 } 1498 1499 static int net_tap_init(VLANState *vlan, const char *model, 1500 const char *name, const char *ifname1, 1501 const char *setup_script, const char *down_script) 1502 { 1503 TAPState *s; 1504 int fd; 1505 char ifname[128]; 1506 1507 if (ifname1 != NULL) 1508 pstrcpy(ifname, sizeof(ifname), ifname1); 1509 else 1510 ifname[0] = '\0'; 1511 TFR(fd = tap_open(ifname, sizeof(ifname))); 1512 if (fd < 0) 1513 return -1; 1514 1515 if (!setup_script || !strcmp(setup_script, "no")) 1516 setup_script = ""; 1517 if (setup_script[0] != '\0') { 1518 if (launch_script(setup_script, ifname, fd)) 1519 return -1; 1520 } 1521 s = net_tap_fd_init(vlan, model, name, fd); 1522 snprintf(s->vc->info_str, sizeof(s->vc->info_str), 1523 "ifname=%s,script=%s,downscript=%s", 1524 ifname, setup_script, down_script); 1525 if (down_script && strcmp(down_script, "no")) { 1526 snprintf(s->down_script, sizeof(s->down_script), "%s", down_script); 1527 snprintf(s->down_script_arg, sizeof(s->down_script_arg), "%s", ifname); 1528 } 1529 return 0; 1530 } 1531 1532 #endif /* !_WIN32 */ 1533 1534 #if defined(CONFIG_VDE) 1535 typedef struct VDEState { 1536 VLANClientState *vc; 1537 VDECONN *vde; 1538 } VDEState; 1539 1540 static void vde_to_qemu(void *opaque) 1541 { 1542 VDEState *s = opaque; 1543 uint8_t buf[4096]; 1544 int size; 1545 1546 size = vde_recv(s->vde, (char *)buf, sizeof(buf), 0); 1547 if (size > 0) { 1548 qemu_send_packet(s->vc, buf, size); 1549 } 1550 } 1551 1552 static ssize_t vde_receive(VLANClientState *vc, const uint8_t *buf, size_t size) 1553 { 1554 VDEState *s = vc->opaque; 1555 ssize_t ret; 1556 1557 do { 1558 ret = vde_send(s->vde, (const char *)buf, size, 0); 1559 } while (ret < 0 && errno == EINTR); 1560 1561 return ret; 1562 } 1563 1564 static void vde_cleanup(VLANClientState *vc) 1565 { 1566 VDEState *s = vc->opaque; 1567 qemu_set_fd_handler(vde_datafd(s->vde), NULL, NULL, NULL); 1568 vde_close(s->vde); 1569 qemu_free(s); 1570 } 1571 1572 static int net_vde_init(VLANState *vlan, const char *model, 1573 const char *name, const char *sock, 1574 int port, const char *group, int mode) 1575 { 1576 VDEState *s; 1577 char *init_group = strlen(group) ? (char *)group : NULL; 1578 char *init_sock = strlen(sock) ? (char *)sock : NULL; 1579 1580 struct vde_open_args args = { 1581 .port = port, 1582 .group = init_group, 1583 .mode = mode, 1584 }; 1585 1586 s = qemu_mallocz(sizeof(VDEState)); 1587 s->vde = vde_open(init_sock, (char *)"QEMU", &args); 1588 if (!s->vde){ 1589 free(s); 1590 return -1; 1591 } 1592 s->vc = qemu_new_vlan_client(vlan, model, name, NULL, vde_receive, 1593 NULL, vde_cleanup, s); 1594 qemu_set_fd_handler(vde_datafd(s->vde), vde_to_qemu, NULL, s); 1595 snprintf(s->vc->info_str, sizeof(s->vc->info_str), "sock=%s,fd=%d", 1596 sock, vde_datafd(s->vde)); 1597 return 0; 1598 } 1599 #endif 1600 1601 /* network connection */ 1602 typedef struct NetSocketState { 1603 VLANClientState *vc; 1604 int fd; 1605 int state; /* 0 = getting length, 1 = getting data */ 1606 unsigned int index; 1607 unsigned int packet_len; 1608 uint8_t buf[4096]; 1609 SockAddress dgram_dst; /* contains inet host and port destination iff connectionless (SOCK_DGRAM) */ 1610 } NetSocketState; 1611 1612 typedef struct NetSocketListenState { 1613 VLANState *vlan; 1614 char *model; 1615 char *name; 1616 int fd; 1617 } NetSocketListenState; 1618 1619 /* XXX: we consider we can send the whole packet without blocking */ 1620 static ssize_t net_socket_receive(VLANClientState *vc, const uint8_t *buf, size_t size) 1621 { 1622 NetSocketState *s = vc->opaque; 1623 uint32_t len; 1624 len = htonl(size); 1625 1626 socket_send(s->fd, (const uint8_t *)&len, sizeof(len)); 1627 return socket_send(s->fd, buf, size); 1628 } 1629 1630 static ssize_t net_socket_receive_dgram(VLANClientState *vc, const uint8_t *buf, size_t size) 1631 { 1632 NetSocketState *s = vc->opaque; 1633 1634 return socket_sendto(s->fd, buf, size, &s->dgram_dst); 1635 } 1636 1637 static void net_socket_send(void *opaque) 1638 { 1639 NetSocketState *s = opaque; 1640 int size, err; 1641 unsigned l; 1642 uint8_t buf1[4096]; 1643 const uint8_t *buf; 1644 1645 size = recv(s->fd, (void *)buf1, sizeof(buf1), 0); 1646 if (size < 0) { 1647 err = socket_error(); 1648 if (err != EWOULDBLOCK && err != EAGAIN) 1649 goto eoc; 1650 } else if (size == 0) { 1651 /* end of connection */ 1652 eoc: 1653 qemu_set_fd_handler(s->fd, NULL, NULL, NULL); 1654 closesocket(s->fd); 1655 return; 1656 } 1657 buf = buf1; 1658 while (size > 0) { 1659 /* reassemble a packet from the network */ 1660 switch(s->state) { 1661 case 0: 1662 l = 4 - s->index; 1663 if (l > size) 1664 l = size; 1665 memcpy(s->buf + s->index, buf, l); 1666 buf += l; 1667 size -= l; 1668 s->index += l; 1669 if (s->index == 4) { 1670 /* got length */ 1671 s->packet_len = ntohl(*(uint32_t *)s->buf); 1672 s->index = 0; 1673 s->state = 1; 1674 } 1675 break; 1676 case 1: 1677 l = s->packet_len - s->index; 1678 if (l > size) 1679 l = size; 1680 if (s->index + l <= sizeof(s->buf)) { 1681 memcpy(s->buf + s->index, buf, l); 1682 } else { 1683 fprintf(stderr, "serious error: oversized packet received," 1684 "connection terminated.\n"); 1685 s->state = 0; 1686 goto eoc; 1687 } 1688 1689 s->index += l; 1690 buf += l; 1691 size -= l; 1692 if (s->index >= s->packet_len) { 1693 qemu_send_packet(s->vc, s->buf, s->packet_len); 1694 s->index = 0; 1695 s->state = 0; 1696 } 1697 break; 1698 } 1699 } 1700 } 1701 1702 static void net_socket_send_dgram(void *opaque) 1703 { 1704 NetSocketState *s = opaque; 1705 int size; 1706 1707 size = recv(s->fd, (void *)s->buf, sizeof(s->buf), 0); 1708 if (size < 0) 1709 return; 1710 if (size == 0) { 1711 /* end of connection */ 1712 qemu_set_fd_handler(s->fd, NULL, NULL, NULL); 1713 return; 1714 } 1715 qemu_send_packet(s->vc, s->buf, size); 1716 } 1717 1718 static int net_socket_mcast_create(SockAddress *mcastaddr) 1719 { 1720 int fd; 1721 int ret; 1722 if (!IN_MULTICAST(sock_address_get_ip(mcastaddr))) { 1723 fprintf(stderr, "qemu: error: specified mcastaddr \"%s\" (0x%08x) does not contain a multicast address\n", 1724 sock_address_to_string(mcastaddr), 1725 sock_address_get_ip(mcastaddr)); 1726 return -1; 1727 1728 } 1729 fd = socket_create_inet(SOCKET_DGRAM); 1730 if (fd < 0) { 1731 perror("socket(PF_INET, SOCK_DGRAM)"); 1732 return -1; 1733 } 1734 1735 ret = socket_set_xreuseaddr(fd); 1736 if (ret < 0) { 1737 perror("setsockopt(SOL_SOCKET, SO_REUSEADDR)"); 1738 goto fail; 1739 } 1740 1741 ret = socket_bind(fd, mcastaddr); 1742 if (ret < 0) { 1743 perror("bind"); 1744 goto fail; 1745 } 1746 1747 /* Add host to multicast group */ 1748 ret = socket_mcast_inet_add_membership(fd, sock_address_get_ip(mcastaddr)); 1749 if (ret < 0) { 1750 perror("setsockopt(IP_ADD_MEMBERSHIP)"); 1751 goto fail; 1752 } 1753 1754 /* Force mcast msgs to loopback (eg. several QEMUs in same host */ 1755 ret = socket_mcast_inet_set_loop(fd, 1); 1756 if (ret < 0) { 1757 perror("setsockopt(SOL_IP, IP_MULTICAST_LOOP)"); 1758 goto fail; 1759 } 1760 1761 socket_set_nonblock(fd); 1762 return fd; 1763 fail: 1764 if (fd >= 0) 1765 socket_close(fd); 1766 return -1; 1767 } 1768 1769 static void net_socket_cleanup(VLANClientState *vc) 1770 { 1771 NetSocketState *s = vc->opaque; 1772 qemu_set_fd_handler(s->fd, NULL, NULL, NULL); 1773 socket_close(s->fd); 1774 qemu_free(s); 1775 } 1776 1777 static NetSocketState *net_socket_fd_init_dgram(VLANState *vlan, 1778 const char *model, 1779 const char *name, 1780 int fd, int is_connected) 1781 { 1782 SockAddress saddr; 1783 int newfd; 1784 NetSocketState *s; 1785 1786 /* fd passed: multicast: "learn" dgram_dst address from bound address and save it 1787 * Because this may be "shared" socket from a "master" process, datagrams would be recv() 1788 * by ONLY ONE process: we must "clone" this dgram socket --jjo 1789 */ 1790 1791 if (is_connected) { 1792 if (socket_get_address(fd, &saddr) == 0) { 1793 /* must be bound */ 1794 if (sock_address_get_ip(&saddr) == 0) { 1795 fprintf(stderr, "qemu: error: init_dgram: fd=%d unbound, cannot setup multicast dst addr\n", 1796 fd); 1797 return NULL; 1798 } 1799 /* clone dgram socket */ 1800 newfd = net_socket_mcast_create(&saddr); 1801 if (newfd < 0) { 1802 /* error already reported by net_socket_mcast_create() */ 1803 socket_close(fd); 1804 return NULL; 1805 } 1806 /* clone newfd to fd, close newfd */ 1807 dup2(newfd, fd); 1808 socket_close(newfd); 1809 1810 } else { 1811 fprintf(stderr, "qemu: error: init_dgram: fd=%d failed getsockname(): %s\n", 1812 fd, strerror(errno)); 1813 return NULL; 1814 } 1815 } 1816 1817 s = qemu_mallocz(sizeof(NetSocketState)); 1818 s->fd = fd; 1819 1820 s->vc = qemu_new_vlan_client(vlan, model, name, NULL, net_socket_receive_dgram, 1821 NULL, net_socket_cleanup, s); 1822 qemu_set_fd_handler(s->fd, net_socket_send_dgram, NULL, s); 1823 1824 /* mcast: save bound address as dst */ 1825 if (is_connected) s->dgram_dst=saddr; 1826 1827 snprintf(s->vc->info_str, sizeof(s->vc->info_str), 1828 "socket: fd=%d (%s mcast=%s)", 1829 fd, is_connected? "cloned" : "", 1830 sock_address_to_string(&saddr)); 1831 return s; 1832 } 1833 1834 static void net_socket_connect(void *opaque) 1835 { 1836 NetSocketState *s = opaque; 1837 qemu_set_fd_handler(s->fd, net_socket_send, NULL, s); 1838 } 1839 1840 static NetSocketState *net_socket_fd_init_stream(VLANState *vlan, 1841 const char *model, 1842 const char *name, 1843 int fd, int is_connected) 1844 { 1845 NetSocketState *s; 1846 s = qemu_mallocz(sizeof(NetSocketState)); 1847 s->fd = fd; 1848 s->vc = qemu_new_vlan_client(vlan, model, name, NULL, net_socket_receive, 1849 NULL, net_socket_cleanup, s); 1850 snprintf(s->vc->info_str, sizeof(s->vc->info_str), 1851 "socket: fd=%d", fd); 1852 if (is_connected) { 1853 net_socket_connect(s); 1854 } else { 1855 qemu_set_fd_handler(s->fd, NULL, net_socket_connect, s); 1856 } 1857 return s; 1858 } 1859 1860 static NetSocketState *net_socket_fd_init(VLANState *vlan, 1861 const char *model, const char *name, 1862 int fd, int is_connected) 1863 { 1864 SocketType so_type = socket_get_type(fd); 1865 1866 switch(so_type) { 1867 case SOCKET_DGRAM: 1868 return net_socket_fd_init_dgram(vlan, model, name, fd, is_connected); 1869 case SOCKET_STREAM: 1870 return net_socket_fd_init_stream(vlan, model, name, fd, is_connected); 1871 default: 1872 /* who knows ... this could be a eg. a pty, do warn and continue as stream */ 1873 fprintf(stderr, "qemu: warning: socket type=%d for fd=%d is not SOCK_DGRAM or SOCK_STREAM\n", so_type, fd); 1874 return net_socket_fd_init_stream(vlan, model, name, fd, is_connected); 1875 } 1876 return NULL; 1877 } 1878 1879 static void net_socket_accept(void *opaque) 1880 { 1881 NetSocketListenState *s = opaque; 1882 NetSocketState *s1; 1883 SockAddress saddr; 1884 int fd; 1885 1886 for(;;) { 1887 fd = socket_accept(s->fd, &saddr); 1888 if (fd < 0) { 1889 return; 1890 } else if (fd >= 0) { 1891 break; 1892 } 1893 } 1894 s1 = net_socket_fd_init(s->vlan, s->model, s->name, fd, 1); 1895 if (!s1) { 1896 socket_close(fd); 1897 } else { 1898 snprintf(s1->vc->info_str, sizeof(s1->vc->info_str), 1899 "socket: connection from %s", sock_address_to_string(&saddr)); 1900 } 1901 } 1902 1903 static int net_socket_listen_init(VLANState *vlan, 1904 const char *model, 1905 const char *name, 1906 const char *host_str) 1907 { 1908 NetSocketListenState *s; 1909 int fd, ret; 1910 SockAddress saddr; 1911 1912 if (parse_host_port(&saddr, host_str) < 0) 1913 return -1; 1914 1915 s = qemu_mallocz(sizeof(NetSocketListenState)); 1916 1917 fd = socket_create_inet(SOCKET_STREAM); 1918 if (fd < 0) { 1919 perror("socket"); 1920 return -1; 1921 } 1922 socket_set_nonblock(fd); 1923 1924 /* allow fast reuse */ 1925 socket_set_xreuseaddr(fd); 1926 1927 ret = socket_bind(fd, &saddr); 1928 if (ret < 0) { 1929 perror("bind"); 1930 return -1; 1931 } 1932 ret = socket_listen(fd, 0); 1933 if (ret < 0) { 1934 perror("listen"); 1935 return -1; 1936 } 1937 s->vlan = vlan; 1938 s->model = strdup(model); 1939 s->name = name ? strdup(name) : NULL; 1940 s->fd = fd; 1941 qemu_set_fd_handler(fd, net_socket_accept, NULL, s); 1942 return 0; 1943 } 1944 1945 static int net_socket_connect_init(VLANState *vlan, 1946 const char *model, 1947 const char *name, 1948 const char *host_str) 1949 { 1950 NetSocketState *s; 1951 int fd, connected, ret, err; 1952 SockAddress saddr; 1953 1954 if (parse_host_port(&saddr, host_str) < 0) 1955 return -1; 1956 1957 fd = socket_create_inet(SOCKET_STREAM); 1958 if (fd < 0) { 1959 perror("socket"); 1960 return -1; 1961 } 1962 socket_set_nonblock(fd); 1963 1964 connected = 0; 1965 for(;;) { 1966 ret = socket_connect(fd, &saddr); 1967 if (ret < 0) { 1968 err = socket_error(); 1969 if (err == EWOULDBLOCK || err == EAGAIN) { 1970 } else if (err == EINPROGRESS || err == EALREADY) { 1971 break; 1972 } else { 1973 perror("connect"); 1974 socket_close(fd); 1975 return -1; 1976 } 1977 } else { 1978 connected = 1; 1979 break; 1980 } 1981 } 1982 s = net_socket_fd_init(vlan, model, name, fd, connected); 1983 if (!s) 1984 return -1; 1985 snprintf(s->vc->info_str, sizeof(s->vc->info_str), 1986 "socket: connect to %s", 1987 sock_address_to_string(&saddr)); 1988 return 0; 1989 } 1990 1991 static int net_socket_mcast_init(VLANState *vlan, 1992 const char *model, 1993 const char *name, 1994 const char *host_str) 1995 { 1996 NetSocketState *s; 1997 int fd; 1998 SockAddress saddr; 1999 2000 if (parse_host_port(&saddr, host_str) < 0) 2001 return -1; 2002 2003 2004 fd = net_socket_mcast_create(&saddr); 2005 if (fd < 0) 2006 return -1; 2007 2008 s = net_socket_fd_init(vlan, model, name, fd, 0); 2009 if (!s) 2010 return -1; 2011 2012 s->dgram_dst = saddr; 2013 2014 snprintf(s->vc->info_str, sizeof(s->vc->info_str), 2015 "socket: mcast=%s", 2016 sock_address_to_string(&saddr)); 2017 return 0; 2018 2019 } 2020 2021 typedef struct DumpState { 2022 VLANClientState *pcap_vc; 2023 int fd; 2024 int pcap_caplen; 2025 } DumpState; 2026 2027 #define PCAP_MAGIC 0xa1b2c3d4 2028 2029 struct pcap_file_hdr { 2030 uint32_t magic; 2031 uint16_t version_major; 2032 uint16_t version_minor; 2033 int32_t thiszone; 2034 uint32_t sigfigs; 2035 uint32_t snaplen; 2036 uint32_t linktype; 2037 }; 2038 2039 struct pcap_sf_pkthdr { 2040 struct { 2041 int32_t tv_sec; 2042 int32_t tv_usec; 2043 } ts; 2044 uint32_t caplen; 2045 uint32_t len; 2046 }; 2047 2048 static ssize_t dump_receive(VLANClientState *vc, const uint8_t *buf, size_t size) 2049 { 2050 DumpState *s = vc->opaque; 2051 struct pcap_sf_pkthdr hdr; 2052 int64_t ts; 2053 int caplen; 2054 2055 /* Early return in case of previous error. */ 2056 if (s->fd < 0) { 2057 return size; 2058 } 2059 2060 ts = muldiv64(qemu_get_clock(vm_clock), 1000000, get_ticks_per_sec()); 2061 caplen = size > s->pcap_caplen ? s->pcap_caplen : size; 2062 2063 hdr.ts.tv_sec = ts / 1000000; 2064 hdr.ts.tv_usec = ts % 1000000; 2065 hdr.caplen = caplen; 2066 hdr.len = size; 2067 if (write(s->fd, &hdr, sizeof(hdr)) != sizeof(hdr) || 2068 write(s->fd, buf, caplen) != caplen) { 2069 qemu_log("-net dump write error - stop dump\n"); 2070 close(s->fd); 2071 s->fd = -1; 2072 } 2073 2074 return size; 2075 } 2076 2077 static void net_dump_cleanup(VLANClientState *vc) 2078 { 2079 DumpState *s = vc->opaque; 2080 2081 close(s->fd); 2082 qemu_free(s); 2083 } 2084 2085 static int net_dump_init(Monitor *mon, VLANState *vlan, const char *device, 2086 const char *name, const char *filename, int len) 2087 { 2088 struct pcap_file_hdr hdr; 2089 DumpState *s; 2090 2091 s = qemu_malloc(sizeof(DumpState)); 2092 2093 s->fd = open(filename, O_CREAT | O_WRONLY, 0644); 2094 if (s->fd < 0) { 2095 config_error(mon, "-net dump: can't open %s\n", filename); 2096 return -1; 2097 } 2098 2099 s->pcap_caplen = len; 2100 2101 hdr.magic = PCAP_MAGIC; 2102 hdr.version_major = 2; 2103 hdr.version_minor = 4; 2104 hdr.thiszone = 0; 2105 hdr.sigfigs = 0; 2106 hdr.snaplen = s->pcap_caplen; 2107 hdr.linktype = 1; 2108 2109 if (write(s->fd, &hdr, sizeof(hdr)) < sizeof(hdr)) { 2110 config_error(mon, "-net dump write error: %s\n", strerror(errno)); 2111 close(s->fd); 2112 qemu_free(s); 2113 return -1; 2114 } 2115 2116 s->pcap_vc = qemu_new_vlan_client(vlan, device, name, NULL, dump_receive, NULL, 2117 net_dump_cleanup, s); 2118 snprintf(s->pcap_vc->info_str, sizeof(s->pcap_vc->info_str), 2119 "dump to %s (len=%d)", filename, len); 2120 return 0; 2121 } 2122 2123 /* find or alloc a new VLAN */ 2124 VLANState *qemu_find_vlan(int id) 2125 { 2126 VLANState **pvlan, *vlan; 2127 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) { 2128 if (vlan->id == id) 2129 return vlan; 2130 } 2131 vlan = qemu_mallocz(sizeof(VLANState)); 2132 vlan->id = id; 2133 vlan->next = NULL; 2134 pvlan = &first_vlan; 2135 while (*pvlan != NULL) 2136 pvlan = &(*pvlan)->next; 2137 *pvlan = vlan; 2138 return vlan; 2139 } 2140 2141 static int nic_get_free_idx(void) 2142 { 2143 int index; 2144 2145 for (index = 0; index < MAX_NICS; index++) 2146 if (!nd_table[index].used) 2147 return index; 2148 return -1; 2149 } 2150 2151 void qemu_check_nic_model(NICInfo *nd, const char *model) 2152 { 2153 const char *models[2]; 2154 2155 models[0] = model; 2156 models[1] = NULL; 2157 2158 qemu_check_nic_model_list(nd, models, model); 2159 } 2160 2161 void qemu_check_nic_model_list(NICInfo *nd, const char * const *models, 2162 const char *default_model) 2163 { 2164 int i, exit_status = 0; 2165 2166 if (!nd->model) 2167 nd->model = strdup(default_model); 2168 2169 if (strcmp(nd->model, "?") != 0) { 2170 for (i = 0 ; models[i]; i++) 2171 if (strcmp(nd->model, models[i]) == 0) 2172 return; 2173 2174 fprintf(stderr, "qemu: Unsupported NIC model: %s\n", nd->model); 2175 exit_status = 1; 2176 } 2177 2178 fprintf(stderr, "qemu: Supported NIC models: "); 2179 for (i = 0 ; models[i]; i++) 2180 fprintf(stderr, "%s%c", models[i], models[i+1] ? ',' : '\n'); 2181 2182 exit(exit_status); 2183 } 2184 2185 int net_client_init(Monitor *mon, const char *device, const char *p) 2186 { 2187 static const char * const fd_params[] = { 2188 "vlan", "name", "fd", NULL 2189 }; 2190 char buf[1024]; 2191 int vlan_id, ret; 2192 VLANState *vlan; 2193 char *name = NULL; 2194 2195 vlan_id = 0; 2196 if (get_param_value(buf, sizeof(buf), "vlan", p)) { 2197 vlan_id = strtol(buf, NULL, 0); 2198 } 2199 vlan = qemu_find_vlan(vlan_id); 2200 2201 if (get_param_value(buf, sizeof(buf), "name", p)) { 2202 name = qemu_strdup(buf); 2203 } 2204 if (!strcmp(device, "nic")) { 2205 static const char * const nic_params[] = { 2206 "vlan", "name", "macaddr", "model", NULL 2207 }; 2208 NICInfo *nd; 2209 uint8_t *macaddr; 2210 int idx = nic_get_free_idx(); 2211 2212 if (check_params(buf, sizeof(buf), nic_params, p) < 0) { 2213 config_error(mon, "invalid parameter '%s' in '%s'\n", buf, p); 2214 ret = -1; 2215 goto out; 2216 } 2217 if (idx == -1 || nb_nics >= MAX_NICS) { 2218 config_error(mon, "Too Many NICs\n"); 2219 ret = -1; 2220 goto out; 2221 } 2222 nd = &nd_table[idx]; 2223 macaddr = nd->macaddr; 2224 macaddr[0] = 0x52; 2225 macaddr[1] = 0x54; 2226 macaddr[2] = 0x00; 2227 macaddr[3] = 0x12; 2228 macaddr[4] = 0x34; 2229 macaddr[5] = 0x56 + idx; 2230 2231 if (get_param_value(buf, sizeof(buf), "macaddr", p)) { 2232 if (parse_macaddr(macaddr, buf) < 0) { 2233 config_error(mon, "invalid syntax for ethernet address\n"); 2234 ret = -1; 2235 goto out; 2236 } 2237 } 2238 if (get_param_value(buf, sizeof(buf), "model", p)) { 2239 nd->model = strdup(buf); 2240 } 2241 nd->vlan = vlan; 2242 nd->name = name; 2243 nd->used = 1; 2244 name = NULL; 2245 nb_nics++; 2246 vlan->nb_guest_devs++; 2247 ret = idx; 2248 } else 2249 if (!strcmp(device, "none")) { 2250 if (*p != '\0') { 2251 config_error(mon, "'none' takes no parameters\n"); 2252 ret = -1; 2253 goto out; 2254 } 2255 /* does nothing. It is needed to signal that no network cards 2256 are wanted */ 2257 ret = 0; 2258 } else 2259 #ifdef CONFIG_SLIRP 2260 if (!strcmp(device, "user")) { 2261 static const char * const slirp_params[] = { 2262 "vlan", "name", "hostname", "restrict", "ip", NULL 2263 }; 2264 int restricted = 0; 2265 char *ip = NULL; 2266 2267 if (check_params(buf, sizeof(buf), slirp_params, p) < 0) { 2268 config_error(mon, "invalid parameter '%s' in '%s'\n", buf, p); 2269 ret = -1; 2270 goto out; 2271 } 2272 if (get_param_value(buf, sizeof(buf), "hostname", p)) { 2273 pstrcpy(slirp_hostname, sizeof(slirp_hostname), buf); 2274 } 2275 if (get_param_value(buf, sizeof(buf), "restrict", p)) { 2276 restricted = (buf[0] == 'y') ? 1 : 0; 2277 } 2278 if (get_param_value(buf, sizeof(buf), "ip", p)) { 2279 ip = qemu_strdup(buf); 2280 } 2281 vlan->nb_host_devs++; 2282 ret = net_slirp_init(vlan, device, name, restricted, ip); 2283 qemu_free(ip); 2284 } else if (!strcmp(device, "channel")) { 2285 long port; 2286 char name[20], *devname; 2287 struct VMChannel *vmc; 2288 2289 port = strtol(p, &devname, 10); 2290 devname++; 2291 if (port < 1 || port > 65535) { 2292 config_error(mon, "vmchannel wrong port number\n"); 2293 ret = -1; 2294 goto out; 2295 } 2296 vmc = malloc(sizeof(struct VMChannel)); 2297 snprintf(name, 20, "vmchannel%ld", port); 2298 vmc->hd = qemu_chr_open(name, devname, NULL); 2299 if (!vmc->hd) { 2300 config_error(mon, "could not open vmchannel device '%s'\n", 2301 devname); 2302 ret = -1; 2303 goto out; 2304 } 2305 vmc->port = port; 2306 slirp_add_exec(3, vmc->hd, 4, port); 2307 qemu_chr_add_handlers(vmc->hd, vmchannel_can_read, vmchannel_read, 2308 NULL, vmc); 2309 ret = 0; 2310 } else 2311 #endif 2312 #ifdef _WIN32 2313 if (!strcmp(device, "tap")) { 2314 static const char * const tap_params[] = { 2315 "vlan", "name", "ifname", NULL 2316 }; 2317 char ifname[64]; 2318 2319 if (check_params(buf, sizeof(buf), tap_params, p) < 0) { 2320 config_error(mon, "invalid parameter '%s' in '%s'\n", buf, p); 2321 ret = -1; 2322 goto out; 2323 } 2324 if (get_param_value(ifname, sizeof(ifname), "ifname", p) <= 0) { 2325 config_error(mon, "tap: no interface name\n"); 2326 ret = -1; 2327 goto out; 2328 } 2329 vlan->nb_host_devs++; 2330 ret = tap_win32_init(vlan, device, name, ifname); 2331 } else 2332 #elif defined (_AIX) 2333 #else 2334 if (!strcmp(device, "tap")) { 2335 char ifname[64], chkbuf[64]; 2336 char setup_script[1024], down_script[1024]; 2337 int fd; 2338 vlan->nb_host_devs++; 2339 if (get_param_value(buf, sizeof(buf), "fd", p) > 0) { 2340 if (check_params(chkbuf, sizeof(chkbuf), fd_params, p) < 0) { 2341 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p); 2342 ret = -1; 2343 goto out; 2344 } 2345 fd = strtol(buf, NULL, 0); 2346 fcntl(fd, F_SETFL, O_NONBLOCK); 2347 net_tap_fd_init(vlan, device, name, fd); 2348 ret = 0; 2349 } else { 2350 static const char * const tap_params[] = { 2351 "vlan", "name", "ifname", "script", "downscript", NULL 2352 }; 2353 if (check_params(chkbuf, sizeof(chkbuf), tap_params, p) < 0) { 2354 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p); 2355 ret = -1; 2356 goto out; 2357 } 2358 if (get_param_value(ifname, sizeof(ifname), "ifname", p) <= 0) { 2359 ifname[0] = '\0'; 2360 } 2361 if (get_param_value(setup_script, sizeof(setup_script), "script", p) == 0) { 2362 pstrcpy(setup_script, sizeof(setup_script), DEFAULT_NETWORK_SCRIPT); 2363 } 2364 if (get_param_value(down_script, sizeof(down_script), "downscript", p) == 0) { 2365 pstrcpy(down_script, sizeof(down_script), DEFAULT_NETWORK_DOWN_SCRIPT); 2366 } 2367 ret = net_tap_init(vlan, device, name, ifname, setup_script, down_script); 2368 } 2369 } else 2370 #endif 2371 if (!strcmp(device, "socket")) { 2372 char chkbuf[64]; 2373 if (get_param_value(buf, sizeof(buf), "fd", p) > 0) { 2374 int fd; 2375 if (check_params(chkbuf, sizeof(chkbuf), fd_params, p) < 0) { 2376 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p); 2377 ret = -1; 2378 goto out; 2379 } 2380 fd = strtol(buf, NULL, 0); 2381 ret = -1; 2382 if (net_socket_fd_init(vlan, device, name, fd, 1)) 2383 ret = 0; 2384 } else if (get_param_value(buf, sizeof(buf), "listen", p) > 0) { 2385 static const char * const listen_params[] = { 2386 "vlan", "name", "listen", NULL 2387 }; 2388 if (check_params(chkbuf, sizeof(chkbuf), listen_params, p) < 0) { 2389 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p); 2390 ret = -1; 2391 goto out; 2392 } 2393 ret = net_socket_listen_init(vlan, device, name, buf); 2394 } else if (get_param_value(buf, sizeof(buf), "connect", p) > 0) { 2395 static const char * const connect_params[] = { 2396 "vlan", "name", "connect", NULL 2397 }; 2398 if (check_params(chkbuf, sizeof(chkbuf), connect_params, p) < 0) { 2399 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p); 2400 ret = -1; 2401 goto out; 2402 } 2403 ret = net_socket_connect_init(vlan, device, name, buf); 2404 } else if (get_param_value(buf, sizeof(buf), "mcast", p) > 0) { 2405 static const char * const mcast_params[] = { 2406 "vlan", "name", "mcast", NULL 2407 }; 2408 if (check_params(chkbuf, sizeof(chkbuf), mcast_params, p) < 0) { 2409 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p); 2410 ret = -1; 2411 goto out; 2412 } 2413 ret = net_socket_mcast_init(vlan, device, name, buf); 2414 } else { 2415 config_error(mon, "Unknown socket options: %s\n", p); 2416 ret = -1; 2417 goto out; 2418 } 2419 vlan->nb_host_devs++; 2420 } else 2421 #ifdef CONFIG_VDE 2422 if (!strcmp(device, "vde")) { 2423 static const char * const vde_params[] = { 2424 "vlan", "name", "sock", "port", "group", "mode", NULL 2425 }; 2426 char vde_sock[1024], vde_group[512]; 2427 int vde_port, vde_mode; 2428 2429 if (check_params(buf, sizeof(buf), vde_params, p) < 0) { 2430 config_error(mon, "invalid parameter '%s' in '%s'\n", buf, p); 2431 ret = -1; 2432 goto out; 2433 } 2434 vlan->nb_host_devs++; 2435 if (get_param_value(vde_sock, sizeof(vde_sock), "sock", p) <= 0) { 2436 vde_sock[0] = '\0'; 2437 } 2438 if (get_param_value(buf, sizeof(buf), "port", p) > 0) { 2439 vde_port = strtol(buf, NULL, 10); 2440 } else { 2441 vde_port = 0; 2442 } 2443 if (get_param_value(vde_group, sizeof(vde_group), "group", p) <= 0) { 2444 vde_group[0] = '\0'; 2445 } 2446 if (get_param_value(buf, sizeof(buf), "mode", p) > 0) { 2447 vde_mode = strtol(buf, NULL, 8); 2448 } else { 2449 vde_mode = 0700; 2450 } 2451 ret = net_vde_init(vlan, device, name, vde_sock, vde_port, vde_group, vde_mode); 2452 } else 2453 #endif 2454 if (!strcmp(device, "dump")) { 2455 int len = 65536; 2456 2457 if (get_param_value(buf, sizeof(buf), "len", p) > 0) { 2458 len = strtol(buf, NULL, 0); 2459 } 2460 if (!get_param_value(buf, sizeof(buf), "file", p)) { 2461 snprintf(buf, sizeof(buf), "qemu-vlan%d.pcap", vlan_id); 2462 } 2463 ret = net_dump_init(mon, vlan, device, name, buf, len); 2464 } else { 2465 config_error(mon, "Unknown network device: %s\n", device); 2466 ret = -1; 2467 goto out; 2468 } 2469 if (ret < 0) { 2470 config_error(mon, "Could not initialize device '%s'\n", device); 2471 } 2472 out: 2473 qemu_free(name); 2474 return ret; 2475 } 2476 2477 void net_client_uninit(NICInfo *nd) 2478 { 2479 nd->vlan->nb_guest_devs--; 2480 nb_nics--; 2481 nd->used = 0; 2482 free((void *)nd->model); 2483 } 2484 2485 static int net_host_check_device(const char *device) 2486 { 2487 int i; 2488 const char *valid_param_list[] = { "tap", "socket", "dump" 2489 #ifdef CONFIG_SLIRP 2490 ,"user" 2491 #endif 2492 #ifdef CONFIG_VDE 2493 ,"vde" 2494 #endif 2495 }; 2496 for (i = 0; i < sizeof(valid_param_list) / sizeof(char *); i++) { 2497 if (!strncmp(valid_param_list[i], device, 2498 strlen(valid_param_list[i]))) 2499 return 1; 2500 } 2501 2502 return 0; 2503 } 2504 2505 void net_host_device_add(Monitor *mon, const char *device, const char *opts) 2506 { 2507 if (!net_host_check_device(device)) { 2508 monitor_printf(mon, "invalid host network device %s\n", device); 2509 return; 2510 } 2511 if (net_client_init(mon, device, opts ? opts : "") < 0) { 2512 monitor_printf(mon, "adding host network device %s failed\n", device); 2513 } 2514 } 2515 2516 void net_host_device_remove(Monitor *mon, int vlan_id, const char *device) 2517 { 2518 VLANState *vlan; 2519 VLANClientState *vc; 2520 2521 vlan = qemu_find_vlan(vlan_id); 2522 2523 for (vc = vlan->first_client; vc != NULL; vc = vc->next) { 2524 if (!strcmp(vc->name, device)) { 2525 break; 2526 } 2527 } 2528 2529 if (!vc) { 2530 monitor_printf(mon, "can't find device %s\n", device); 2531 return; 2532 } 2533 if (!net_host_check_device(vc->model)) { 2534 monitor_printf(mon, "invalid host network device %s\n", device); 2535 return; 2536 } 2537 qemu_del_vlan_client(vc); 2538 } 2539 2540 int net_client_parse(const char *str) 2541 { 2542 const char *p; 2543 char *q; 2544 char device[64]; 2545 2546 p = str; 2547 q = device; 2548 while (*p != '\0' && *p != ',') { 2549 if ((q - device) < sizeof(device) - 1) 2550 *q++ = *p; 2551 p++; 2552 } 2553 *q = '\0'; 2554 if (*p == ',') 2555 p++; 2556 2557 return net_client_init(NULL, device, p); 2558 } 2559 2560 void do_info_network(Monitor *mon) 2561 { 2562 VLANState *vlan; 2563 VLANClientState *vc; 2564 2565 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) { 2566 monitor_printf(mon, "VLAN %d devices:\n", vlan->id); 2567 for(vc = vlan->first_client; vc != NULL; vc = vc->next) 2568 monitor_printf(mon, " %s: %s\n", vc->name, vc->info_str); 2569 } 2570 } 2571 2572 int do_set_link(Monitor *mon, const char *name, const char *up_or_down) 2573 { 2574 VLANState *vlan; 2575 VLANClientState *vc = NULL; 2576 2577 for (vlan = first_vlan; vlan != NULL; vlan = vlan->next) 2578 for (vc = vlan->first_client; vc != NULL; vc = vc->next) 2579 if (strcmp(vc->name, name) == 0) 2580 goto done; 2581 done: 2582 2583 if (!vc) { 2584 monitor_printf(mon, "could not find network device '%s'", name); 2585 return 0; 2586 } 2587 2588 if (strcmp(up_or_down, "up") == 0) 2589 vc->link_down = 0; 2590 else if (strcmp(up_or_down, "down") == 0) 2591 vc->link_down = 1; 2592 else 2593 monitor_printf(mon, "invalid link status '%s'; only 'up' or 'down' " 2594 "valid\n", up_or_down); 2595 2596 if (vc->link_status_changed) 2597 vc->link_status_changed(vc); 2598 2599 return 1; 2600 } 2601 2602 void net_cleanup(void) 2603 { 2604 VLANState *vlan; 2605 2606 /* close network clients */ 2607 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) { 2608 VLANClientState *vc = vlan->first_client; 2609 2610 while (vc) { 2611 VLANClientState *next = vc->next; 2612 2613 qemu_del_vlan_client(vc); 2614 2615 vc = next; 2616 } 2617 } 2618 } 2619 2620 void net_client_check(void) 2621 { 2622 VLANState *vlan; 2623 2624 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) { 2625 if (vlan->nb_guest_devs == 0 && vlan->nb_host_devs == 0) 2626 continue; 2627 if (vlan->nb_guest_devs == 0) 2628 fprintf(stderr, "Warning: vlan %d with no nics\n", vlan->id); 2629 if (vlan->nb_host_devs == 0) 2630 fprintf(stderr, 2631 "Warning: vlan %d is not connected to host network\n", 2632 vlan->id); 2633 } 2634 } 2635 2636 int 2637 android_parse_network_speed(const char* speed) 2638 { 2639 int n; 2640 char* end; 2641 double sp; 2642 2643 if (speed == NULL || speed[0] == 0) { 2644 speed = DEFAULT_NETSPEED; 2645 } 2646 2647 for (n = 0; android_netspeeds[n].name != NULL; n++) { 2648 if (!strcmp(android_netspeeds[n].name, speed)) { 2649 qemu_net_download_speed = android_netspeeds[n].download; 2650 qemu_net_upload_speed = android_netspeeds[n].upload; 2651 return 0; 2652 } 2653 } 2654 2655 /* is this a number ? */ 2656 sp = strtod(speed, &end); 2657 if (end == speed) { 2658 return -1; 2659 } 2660 2661 qemu_net_download_speed = qemu_net_upload_speed = sp*1000.; 2662 if (*end == ':') { 2663 speed = end+1; 2664 sp = strtod(speed, &end); 2665 if (end > speed) { 2666 qemu_net_download_speed = sp*1000.; 2667 } 2668 } 2669 2670 if (android_modem) 2671 amodem_set_data_network_type( android_modem, 2672 android_parse_network_type(speed) ); 2673 return 0; 2674 } 2675 2676 2677 int 2678 android_parse_network_latency(const char* delay) 2679 { 2680 int n; 2681 char* end; 2682 double sp; 2683 2684 if (delay == NULL || delay[0] == 0) 2685 delay = DEFAULT_NETDELAY; 2686 2687 for (n = 0; android_netdelays[n].name != NULL; n++) { 2688 if ( !strcmp( android_netdelays[n].name, delay ) ) { 2689 qemu_net_min_latency = android_netdelays[n].min_ms; 2690 qemu_net_max_latency = android_netdelays[n].max_ms; 2691 return 0; 2692 } 2693 } 2694 2695 /* is this a number ? */ 2696 sp = strtod(delay, &end); 2697 if (end == delay) { 2698 return -1; 2699 } 2700 2701 qemu_net_min_latency = qemu_net_max_latency = (int)sp; 2702 if (*end == ':') { 2703 delay = (const char*)end+1; 2704 sp = strtod(delay, &end); 2705 if (end > delay) { 2706 qemu_net_max_latency = (int)sp; 2707 } 2708 } 2709 return 0; 2710 } 2711
