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