net-android.c revision a7fb77d6eca56e61e94f62e7deb4120b60b1e919
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 133static VLANState *first_vlan; 134 135/***********************************************************/ 136/* network device redirectors */ 137 138#if defined(DEBUG_NET) || defined(DEBUG_SLIRP) 139static 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 166static 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 198static 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 218int 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 254fail: 255 free(str); 256 return -1; 257} 258 259int 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 290static 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 309void 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 318static 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 337VLANClientState *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 368void 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 386VLANClientState *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 399int 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 417static int 418qemu_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 447void 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 470static 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 485ssize_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 516void qemu_send_packet(VLANClientState *vc, const uint8_t *buf, int size) 517{ 518 qemu_send_packet_async(vc, buf, size, NULL); 519} 520 521static 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 539static 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 549static 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 583static 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 611ssize_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 636ssize_t 637qemu_sendv_packet(VLANClientState *vc, const struct iovec *iov, int iovcnt) 638{ 639 return qemu_sendv_packet_async(vc, iov, iovcnt, NULL); 640} 641 642static 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 661struct slirp_config_str { 662 struct slirp_config_str *next; 663 const char *str; 664}; 665 666static int slirp_inited; 667static struct slirp_config_str *slirp_redirs; 668#ifndef _WIN32 669static const char *slirp_smb_export; 670#endif 671static VLANClientState *slirp_vc; 672 673#ifndef _WIN32 674static void slirp_smb(const char *exported_dir); 675#endif 676static void slirp_redirection(Monitor *mon, const char *redir_str); 677 678double qemu_net_upload_speed = 0.; 679double qemu_net_download_speed = 0.; 680int qemu_net_min_latency = 0; 681int qemu_net_max_latency = 0; 682int qemu_net_disable = 0; 683 684int 685ip_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 707NetShaper slirp_shaper_in; 708NetShaper slirp_shaper_out; 709NetDelay slirp_delay_in; 710 711static void 712slirp_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 720static void 721slirp_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 728static void 729slirp_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 736void 737slirp_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 751int slirp_can_output(void) 752{ 753 return !slirp_vc || qemu_can_send_packet(slirp_vc); 754} 755 756void 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 770int slirp_is_inited(void) 771{ 772 return slirp_inited; 773} 774 775static 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 788static int slirp_in_use; 789 790static void net_slirp_cleanup(VLANClientState *vc) 791{ 792 slirp_in_use = 0; 793} 794 795static 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 828static 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 857static 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 867static 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 903static 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 955void 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 986static char smb_dir[1024]; 987 988static 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 */ 1014static void smb_exit(void) 1015{ 1016 erase_dir(smb_dir); 1017} 1018 1019static 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 */ 1069void 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 1083void do_info_slirp(Monitor *mon) 1084{ 1085 //slirp_stats(); 1086} 1087 1088struct VMChannel { 1089 CharDriverState *hd; 1090 int port; 1091}; 1092 1093static 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 1099static 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 1109typedef 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 1117static int launch_script(const char *setup_script, const char *ifname, int fd); 1118 1119static 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 1132static 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 1144static 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__ 1152static 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 1163static ssize_t tap_read_packet(int tapfd, uint8_t *buf, int maxlen) 1164{ 1165 return read(tapfd, buf, maxlen); 1166} 1167#endif 1168 1169static void tap_send(void *opaque); 1170 1171static 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 1178static 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 1196static 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 1210static 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 (CONFIG_BSD) || defined (__FreeBSD_kernel__) 1227static 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 */ 1252static 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 1369static 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) 1382static int tap_open(char *ifname, int ifname_size) 1383{ 1384 fprintf (stderr, "no tap on AIX\n"); 1385 return -1; 1386} 1387#else 1388static 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 1416static 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 1460static 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) 1496typedef struct VDEState { 1497 VLANClientState *vc; 1498 VDECONN *vde; 1499} VDEState; 1500 1501static 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 1513static 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 1525static 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 1533static 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 */ 1563typedef 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 1573typedef 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 */ 1581static 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 1591static ssize_t net_socket_receive_dgram(VLANClientState *vc, const uint8_t *buf, size_t size) 1592{ 1593 NetSocketState *s = vc->opaque; 1594 1595 return socket_sendto(s->fd, buf, size, &s->dgram_dst); 1596} 1597 1598static void net_socket_send(void *opaque) 1599{ 1600 NetSocketState *s = opaque; 1601 int size, err; 1602 unsigned l; 1603 uint8_t buf1[4096]; 1604 const uint8_t *buf; 1605 1606 size = recv(s->fd, (void *)buf1, sizeof(buf1), 0); 1607 if (size < 0) { 1608 err = socket_error(); 1609 if (err != EWOULDBLOCK && err != EAGAIN) 1610 goto eoc; 1611 } else if (size == 0) { 1612 /* end of connection */ 1613 eoc: 1614 qemu_set_fd_handler(s->fd, NULL, NULL, NULL); 1615 closesocket(s->fd); 1616 return; 1617 } 1618 buf = buf1; 1619 while (size > 0) { 1620 /* reassemble a packet from the network */ 1621 switch(s->state) { 1622 case 0: 1623 l = 4 - s->index; 1624 if (l > size) 1625 l = size; 1626 memcpy(s->buf + s->index, buf, l); 1627 buf += l; 1628 size -= l; 1629 s->index += l; 1630 if (s->index == 4) { 1631 /* got length */ 1632 s->packet_len = ntohl(*(uint32_t *)s->buf); 1633 s->index = 0; 1634 s->state = 1; 1635 } 1636 break; 1637 case 1: 1638 l = s->packet_len - s->index; 1639 if (l > size) 1640 l = size; 1641 if (s->index + l <= sizeof(s->buf)) { 1642 memcpy(s->buf + s->index, buf, l); 1643 } else { 1644 fprintf(stderr, "serious error: oversized packet received," 1645 "connection terminated.\n"); 1646 s->state = 0; 1647 goto eoc; 1648 } 1649 1650 s->index += l; 1651 buf += l; 1652 size -= l; 1653 if (s->index >= s->packet_len) { 1654 qemu_send_packet(s->vc, s->buf, s->packet_len); 1655 s->index = 0; 1656 s->state = 0; 1657 } 1658 break; 1659 } 1660 } 1661} 1662 1663static void net_socket_send_dgram(void *opaque) 1664{ 1665 NetSocketState *s = opaque; 1666 int size; 1667 1668 size = recv(s->fd, (void *)s->buf, sizeof(s->buf), 0); 1669 if (size < 0) 1670 return; 1671 if (size == 0) { 1672 /* end of connection */ 1673 qemu_set_fd_handler(s->fd, NULL, NULL, NULL); 1674 return; 1675 } 1676 qemu_send_packet(s->vc, s->buf, size); 1677} 1678 1679static int net_socket_mcast_create(SockAddress *mcastaddr) 1680{ 1681 int fd; 1682 int ret; 1683 if (!IN_MULTICAST(sock_address_get_ip(mcastaddr))) { 1684 fprintf(stderr, "qemu: error: specified mcastaddr \"%s\" (0x%08x) does not contain a multicast address\n", 1685 sock_address_to_string(mcastaddr), 1686 sock_address_get_ip(mcastaddr)); 1687 return -1; 1688 1689 } 1690 fd = socket_create_inet(SOCKET_DGRAM); 1691 if (fd < 0) { 1692 perror("socket(PF_INET, SOCK_DGRAM)"); 1693 return -1; 1694 } 1695 1696 ret = socket_set_xreuseaddr(fd); 1697 if (ret < 0) { 1698 perror("setsockopt(SOL_SOCKET, SO_REUSEADDR)"); 1699 goto fail; 1700 } 1701 1702 ret = socket_bind(fd, mcastaddr); 1703 if (ret < 0) { 1704 perror("bind"); 1705 goto fail; 1706 } 1707 1708 /* Add host to multicast group */ 1709 ret = socket_mcast_inet_add_membership(fd, sock_address_get_ip(mcastaddr)); 1710 if (ret < 0) { 1711 perror("setsockopt(IP_ADD_MEMBERSHIP)"); 1712 goto fail; 1713 } 1714 1715 /* Force mcast msgs to loopback (eg. several QEMUs in same host */ 1716 ret = socket_mcast_inet_set_loop(fd, 1); 1717 if (ret < 0) { 1718 perror("setsockopt(SOL_IP, IP_MULTICAST_LOOP)"); 1719 goto fail; 1720 } 1721 1722 socket_set_nonblock(fd); 1723 return fd; 1724fail: 1725 if (fd >= 0) 1726 socket_close(fd); 1727 return -1; 1728} 1729 1730static void net_socket_cleanup(VLANClientState *vc) 1731{ 1732 NetSocketState *s = vc->opaque; 1733 qemu_set_fd_handler(s->fd, NULL, NULL, NULL); 1734 socket_close(s->fd); 1735 qemu_free(s); 1736} 1737 1738static NetSocketState *net_socket_fd_init_dgram(VLANState *vlan, 1739 const char *model, 1740 const char *name, 1741 int fd, int is_connected) 1742{ 1743 SockAddress saddr; 1744 int newfd; 1745 NetSocketState *s; 1746 1747 /* fd passed: multicast: "learn" dgram_dst address from bound address and save it 1748 * Because this may be "shared" socket from a "master" process, datagrams would be recv() 1749 * by ONLY ONE process: we must "clone" this dgram socket --jjo 1750 */ 1751 1752 if (is_connected) { 1753 if (socket_get_address(fd, &saddr) == 0) { 1754 /* must be bound */ 1755 if (sock_address_get_ip(&saddr) == 0) { 1756 fprintf(stderr, "qemu: error: init_dgram: fd=%d unbound, cannot setup multicast dst addr\n", 1757 fd); 1758 return NULL; 1759 } 1760 /* clone dgram socket */ 1761 newfd = net_socket_mcast_create(&saddr); 1762 if (newfd < 0) { 1763 /* error already reported by net_socket_mcast_create() */ 1764 socket_close(fd); 1765 return NULL; 1766 } 1767 /* clone newfd to fd, close newfd */ 1768 dup2(newfd, fd); 1769 socket_close(newfd); 1770 1771 } else { 1772 fprintf(stderr, "qemu: error: init_dgram: fd=%d failed getsockname(): %s\n", 1773 fd, strerror(errno)); 1774 return NULL; 1775 } 1776 } 1777 1778 s = qemu_mallocz(sizeof(NetSocketState)); 1779 s->fd = fd; 1780 1781 s->vc = qemu_new_vlan_client(vlan, model, name, NULL, net_socket_receive_dgram, 1782 NULL, net_socket_cleanup, s); 1783 qemu_set_fd_handler(s->fd, net_socket_send_dgram, NULL, s); 1784 1785 /* mcast: save bound address as dst */ 1786 if (is_connected) s->dgram_dst=saddr; 1787 1788 snprintf(s->vc->info_str, sizeof(s->vc->info_str), 1789 "socket: fd=%d (%s mcast=%s)", 1790 fd, is_connected? "cloned" : "", 1791 sock_address_to_string(&saddr)); 1792 return s; 1793} 1794 1795static void net_socket_connect(void *opaque) 1796{ 1797 NetSocketState *s = opaque; 1798 qemu_set_fd_handler(s->fd, net_socket_send, NULL, s); 1799} 1800 1801static NetSocketState *net_socket_fd_init_stream(VLANState *vlan, 1802 const char *model, 1803 const char *name, 1804 int fd, int is_connected) 1805{ 1806 NetSocketState *s; 1807 s = qemu_mallocz(sizeof(NetSocketState)); 1808 s->fd = fd; 1809 s->vc = qemu_new_vlan_client(vlan, model, name, NULL, net_socket_receive, 1810 NULL, net_socket_cleanup, s); 1811 snprintf(s->vc->info_str, sizeof(s->vc->info_str), 1812 "socket: fd=%d", fd); 1813 if (is_connected) { 1814 net_socket_connect(s); 1815 } else { 1816 qemu_set_fd_handler(s->fd, NULL, net_socket_connect, s); 1817 } 1818 return s; 1819} 1820 1821static NetSocketState *net_socket_fd_init(VLANState *vlan, 1822 const char *model, const char *name, 1823 int fd, int is_connected) 1824{ 1825 SocketType so_type = socket_get_type(fd); 1826 1827 switch(so_type) { 1828 case SOCKET_DGRAM: 1829 return net_socket_fd_init_dgram(vlan, model, name, fd, is_connected); 1830 case SOCKET_STREAM: 1831 return net_socket_fd_init_stream(vlan, model, name, fd, is_connected); 1832 default: 1833 /* who knows ... this could be a eg. a pty, do warn and continue as stream */ 1834 fprintf(stderr, "qemu: warning: socket type=%d for fd=%d is not SOCK_DGRAM or SOCK_STREAM\n", so_type, fd); 1835 return net_socket_fd_init_stream(vlan, model, name, fd, is_connected); 1836 } 1837 return NULL; 1838} 1839 1840static void net_socket_accept(void *opaque) 1841{ 1842 NetSocketListenState *s = opaque; 1843 NetSocketState *s1; 1844 SockAddress saddr; 1845 int fd; 1846 1847 for(;;) { 1848 fd = socket_accept(s->fd, &saddr); 1849 if (fd < 0) { 1850 return; 1851 } else if (fd >= 0) { 1852 break; 1853 } 1854 } 1855 s1 = net_socket_fd_init(s->vlan, s->model, s->name, fd, 1); 1856 if (!s1) { 1857 socket_close(fd); 1858 } else { 1859 snprintf(s1->vc->info_str, sizeof(s1->vc->info_str), 1860 "socket: connection from %s", sock_address_to_string(&saddr)); 1861 } 1862} 1863 1864static int net_socket_listen_init(VLANState *vlan, 1865 const char *model, 1866 const char *name, 1867 const char *host_str) 1868{ 1869 NetSocketListenState *s; 1870 int fd, ret; 1871 SockAddress saddr; 1872 1873 if (parse_host_port(&saddr, host_str) < 0) 1874 return -1; 1875 1876 s = qemu_mallocz(sizeof(NetSocketListenState)); 1877 1878 fd = socket_create_inet(SOCKET_STREAM); 1879 if (fd < 0) { 1880 perror("socket"); 1881 return -1; 1882 } 1883 socket_set_nonblock(fd); 1884 1885 /* allow fast reuse */ 1886 socket_set_xreuseaddr(fd); 1887 1888 ret = socket_bind(fd, &saddr); 1889 if (ret < 0) { 1890 perror("bind"); 1891 return -1; 1892 } 1893 ret = socket_listen(fd, 0); 1894 if (ret < 0) { 1895 perror("listen"); 1896 return -1; 1897 } 1898 s->vlan = vlan; 1899 s->model = strdup(model); 1900 s->name = name ? strdup(name) : NULL; 1901 s->fd = fd; 1902 qemu_set_fd_handler(fd, net_socket_accept, NULL, s); 1903 return 0; 1904} 1905 1906static int net_socket_connect_init(VLANState *vlan, 1907 const char *model, 1908 const char *name, 1909 const char *host_str) 1910{ 1911 NetSocketState *s; 1912 int fd, connected, ret, err; 1913 SockAddress saddr; 1914 1915 if (parse_host_port(&saddr, host_str) < 0) 1916 return -1; 1917 1918 fd = socket_create_inet(SOCKET_STREAM); 1919 if (fd < 0) { 1920 perror("socket"); 1921 return -1; 1922 } 1923 socket_set_nonblock(fd); 1924 1925 connected = 0; 1926 for(;;) { 1927 ret = socket_connect(fd, &saddr); 1928 if (ret < 0) { 1929 err = socket_error(); 1930 if (err == EWOULDBLOCK || err == EAGAIN) { 1931 } else if (err == EINPROGRESS || err == EALREADY) { 1932 break; 1933 } else { 1934 perror("connect"); 1935 socket_close(fd); 1936 return -1; 1937 } 1938 } else { 1939 connected = 1; 1940 break; 1941 } 1942 } 1943 s = net_socket_fd_init(vlan, model, name, fd, connected); 1944 if (!s) 1945 return -1; 1946 snprintf(s->vc->info_str, sizeof(s->vc->info_str), 1947 "socket: connect to %s", 1948 sock_address_to_string(&saddr)); 1949 return 0; 1950} 1951 1952static int net_socket_mcast_init(VLANState *vlan, 1953 const char *model, 1954 const char *name, 1955 const char *host_str) 1956{ 1957 NetSocketState *s; 1958 int fd; 1959 SockAddress saddr; 1960 1961 if (parse_host_port(&saddr, host_str) < 0) 1962 return -1; 1963 1964 1965 fd = net_socket_mcast_create(&saddr); 1966 if (fd < 0) 1967 return -1; 1968 1969 s = net_socket_fd_init(vlan, model, name, fd, 0); 1970 if (!s) 1971 return -1; 1972 1973 s->dgram_dst = saddr; 1974 1975 snprintf(s->vc->info_str, sizeof(s->vc->info_str), 1976 "socket: mcast=%s", 1977 sock_address_to_string(&saddr)); 1978 return 0; 1979 1980} 1981 1982typedef struct DumpState { 1983 VLANClientState *pcap_vc; 1984 int fd; 1985 int pcap_caplen; 1986} DumpState; 1987 1988#define PCAP_MAGIC 0xa1b2c3d4 1989 1990struct pcap_file_hdr { 1991 uint32_t magic; 1992 uint16_t version_major; 1993 uint16_t version_minor; 1994 int32_t thiszone; 1995 uint32_t sigfigs; 1996 uint32_t snaplen; 1997 uint32_t linktype; 1998}; 1999 2000struct pcap_sf_pkthdr { 2001 struct { 2002 int32_t tv_sec; 2003 int32_t tv_usec; 2004 } ts; 2005 uint32_t caplen; 2006 uint32_t len; 2007}; 2008 2009static ssize_t dump_receive(VLANClientState *vc, const uint8_t *buf, size_t size) 2010{ 2011 DumpState *s = vc->opaque; 2012 struct pcap_sf_pkthdr hdr; 2013 int64_t ts; 2014 int caplen; 2015 2016 /* Early return in case of previous error. */ 2017 if (s->fd < 0) { 2018 return size; 2019 } 2020 2021 ts = muldiv64(qemu_get_clock(vm_clock), 1000000, get_ticks_per_sec()); 2022 caplen = size > s->pcap_caplen ? s->pcap_caplen : size; 2023 2024 hdr.ts.tv_sec = ts / 1000000; 2025 hdr.ts.tv_usec = ts % 1000000; 2026 hdr.caplen = caplen; 2027 hdr.len = size; 2028 if (write(s->fd, &hdr, sizeof(hdr)) != sizeof(hdr) || 2029 write(s->fd, buf, caplen) != caplen) { 2030 qemu_log("-net dump write error - stop dump\n"); 2031 close(s->fd); 2032 s->fd = -1; 2033 } 2034 2035 return size; 2036} 2037 2038static void net_dump_cleanup(VLANClientState *vc) 2039{ 2040 DumpState *s = vc->opaque; 2041 2042 close(s->fd); 2043 qemu_free(s); 2044} 2045 2046static int net_dump_init(Monitor *mon, VLANState *vlan, const char *device, 2047 const char *name, const char *filename, int len) 2048{ 2049 struct pcap_file_hdr hdr; 2050 DumpState *s; 2051 2052 s = qemu_malloc(sizeof(DumpState)); 2053 2054 s->fd = open(filename, O_CREAT | O_WRONLY, 0644); 2055 if (s->fd < 0) { 2056 config_error(mon, "-net dump: can't open %s\n", filename); 2057 return -1; 2058 } 2059 2060 s->pcap_caplen = len; 2061 2062 hdr.magic = PCAP_MAGIC; 2063 hdr.version_major = 2; 2064 hdr.version_minor = 4; 2065 hdr.thiszone = 0; 2066 hdr.sigfigs = 0; 2067 hdr.snaplen = s->pcap_caplen; 2068 hdr.linktype = 1; 2069 2070 if (write(s->fd, &hdr, sizeof(hdr)) < sizeof(hdr)) { 2071 config_error(mon, "-net dump write error: %s\n", strerror(errno)); 2072 close(s->fd); 2073 qemu_free(s); 2074 return -1; 2075 } 2076 2077 s->pcap_vc = qemu_new_vlan_client(vlan, device, name, NULL, dump_receive, NULL, 2078 net_dump_cleanup, s); 2079 snprintf(s->pcap_vc->info_str, sizeof(s->pcap_vc->info_str), 2080 "dump to %s (len=%d)", filename, len); 2081 return 0; 2082} 2083 2084/* find or alloc a new VLAN */ 2085VLANState *qemu_find_vlan(int id) 2086{ 2087 VLANState **pvlan, *vlan; 2088 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) { 2089 if (vlan->id == id) 2090 return vlan; 2091 } 2092 vlan = qemu_mallocz(sizeof(VLANState)); 2093 vlan->id = id; 2094 vlan->next = NULL; 2095 pvlan = &first_vlan; 2096 while (*pvlan != NULL) 2097 pvlan = &(*pvlan)->next; 2098 *pvlan = vlan; 2099 return vlan; 2100} 2101 2102static int nic_get_free_idx(void) 2103{ 2104 int index; 2105 2106 for (index = 0; index < MAX_NICS; index++) 2107 if (!nd_table[index].used) 2108 return index; 2109 return -1; 2110} 2111 2112void qemu_check_nic_model(NICInfo *nd, const char *model) 2113{ 2114 const char *models[2]; 2115 2116 models[0] = model; 2117 models[1] = NULL; 2118 2119 qemu_check_nic_model_list(nd, models, model); 2120} 2121 2122void qemu_check_nic_model_list(NICInfo *nd, const char * const *models, 2123 const char *default_model) 2124{ 2125 int i, exit_status = 0; 2126 2127 if (!nd->model) 2128 nd->model = strdup(default_model); 2129 2130 if (strcmp(nd->model, "?") != 0) { 2131 for (i = 0 ; models[i]; i++) 2132 if (strcmp(nd->model, models[i]) == 0) 2133 return; 2134 2135 fprintf(stderr, "qemu: Unsupported NIC model: %s\n", nd->model); 2136 exit_status = 1; 2137 } 2138 2139 fprintf(stderr, "qemu: Supported NIC models: "); 2140 for (i = 0 ; models[i]; i++) 2141 fprintf(stderr, "%s%c", models[i], models[i+1] ? ',' : '\n'); 2142 2143 exit(exit_status); 2144} 2145 2146int net_client_init(Monitor *mon, const char *device, const char *p) 2147{ 2148 static const char * const fd_params[] = { 2149 "vlan", "name", "fd", NULL 2150 }; 2151 char buf[1024]; 2152 int vlan_id, ret; 2153 VLANState *vlan; 2154 char *name = NULL; 2155 2156 vlan_id = 0; 2157 if (get_param_value(buf, sizeof(buf), "vlan", p)) { 2158 vlan_id = strtol(buf, NULL, 0); 2159 } 2160 vlan = qemu_find_vlan(vlan_id); 2161 2162 if (get_param_value(buf, sizeof(buf), "name", p)) { 2163 name = qemu_strdup(buf); 2164 } 2165 if (!strcmp(device, "nic")) { 2166 static const char * const nic_params[] = { 2167 "vlan", "name", "macaddr", "model", NULL 2168 }; 2169 NICInfo *nd; 2170 uint8_t *macaddr; 2171 int idx = nic_get_free_idx(); 2172 2173 if (check_params(buf, sizeof(buf), nic_params, p) < 0) { 2174 config_error(mon, "invalid parameter '%s' in '%s'\n", buf, p); 2175 ret = -1; 2176 goto out; 2177 } 2178 if (idx == -1 || nb_nics >= MAX_NICS) { 2179 config_error(mon, "Too Many NICs\n"); 2180 ret = -1; 2181 goto out; 2182 } 2183 nd = &nd_table[idx]; 2184 macaddr = nd->macaddr; 2185 macaddr[0] = 0x52; 2186 macaddr[1] = 0x54; 2187 macaddr[2] = 0x00; 2188 macaddr[3] = 0x12; 2189 macaddr[4] = 0x34; 2190 macaddr[5] = 0x56 + idx; 2191 2192 if (get_param_value(buf, sizeof(buf), "macaddr", p)) { 2193 if (parse_macaddr(macaddr, buf) < 0) { 2194 config_error(mon, "invalid syntax for ethernet address\n"); 2195 ret = -1; 2196 goto out; 2197 } 2198 } 2199 if (get_param_value(buf, sizeof(buf), "model", p)) { 2200 nd->model = strdup(buf); 2201 } 2202 nd->vlan = vlan; 2203 nd->name = name; 2204 nd->used = 1; 2205 name = NULL; 2206 nb_nics++; 2207 vlan->nb_guest_devs++; 2208 ret = idx; 2209 } else 2210 if (!strcmp(device, "none")) { 2211 if (*p != '\0') { 2212 config_error(mon, "'none' takes no parameters\n"); 2213 ret = -1; 2214 goto out; 2215 } 2216 /* does nothing. It is needed to signal that no network cards 2217 are wanted */ 2218 ret = 0; 2219 } else 2220#ifdef CONFIG_SLIRP 2221 if (!strcmp(device, "user")) { 2222 static const char * const slirp_params[] = { 2223 "vlan", "name", "hostname", "restrict", "ip", NULL 2224 }; 2225 int restricted = 0; 2226 char *ip = NULL; 2227 2228 if (check_params(buf, sizeof(buf), slirp_params, p) < 0) { 2229 config_error(mon, "invalid parameter '%s' in '%s'\n", buf, p); 2230 ret = -1; 2231 goto out; 2232 } 2233 if (get_param_value(buf, sizeof(buf), "hostname", p)) { 2234 pstrcpy(slirp_hostname, sizeof(slirp_hostname), buf); 2235 } 2236 if (get_param_value(buf, sizeof(buf), "restrict", p)) { 2237 restricted = (buf[0] == 'y') ? 1 : 0; 2238 } 2239 if (get_param_value(buf, sizeof(buf), "ip", p)) { 2240 ip = qemu_strdup(buf); 2241 } 2242 vlan->nb_host_devs++; 2243 ret = net_slirp_init(vlan, device, name, restricted, ip); 2244 qemu_free(ip); 2245 } else if (!strcmp(device, "channel")) { 2246 long port; 2247 char name[20], *devname; 2248 struct VMChannel *vmc; 2249 2250 port = strtol(p, &devname, 10); 2251 devname++; 2252 if (port < 1 || port > 65535) { 2253 config_error(mon, "vmchannel wrong port number\n"); 2254 ret = -1; 2255 goto out; 2256 } 2257 vmc = malloc(sizeof(struct VMChannel)); 2258 snprintf(name, 20, "vmchannel%ld", port); 2259 vmc->hd = qemu_chr_open(name, devname, NULL); 2260 if (!vmc->hd) { 2261 config_error(mon, "could not open vmchannel device '%s'\n", 2262 devname); 2263 ret = -1; 2264 goto out; 2265 } 2266 vmc->port = port; 2267 slirp_add_exec(3, vmc->hd, 4, port); 2268 qemu_chr_add_handlers(vmc->hd, vmchannel_can_read, vmchannel_read, 2269 NULL, vmc); 2270 ret = 0; 2271 } else 2272#endif 2273#ifdef _WIN32 2274 if (!strcmp(device, "tap")) { 2275 static const char * const tap_params[] = { 2276 "vlan", "name", "ifname", NULL 2277 }; 2278 char ifname[64]; 2279 2280 if (check_params(buf, sizeof(buf), tap_params, p) < 0) { 2281 config_error(mon, "invalid parameter '%s' in '%s'\n", buf, p); 2282 ret = -1; 2283 goto out; 2284 } 2285 if (get_param_value(ifname, sizeof(ifname), "ifname", p) <= 0) { 2286 config_error(mon, "tap: no interface name\n"); 2287 ret = -1; 2288 goto out; 2289 } 2290 vlan->nb_host_devs++; 2291 ret = tap_win32_init(vlan, device, name, ifname); 2292 } else 2293#elif defined (_AIX) 2294#else 2295 if (!strcmp(device, "tap")) { 2296 char ifname[64], chkbuf[64]; 2297 char setup_script[1024], down_script[1024]; 2298 int fd; 2299 vlan->nb_host_devs++; 2300 if (get_param_value(buf, sizeof(buf), "fd", p) > 0) { 2301 if (check_params(chkbuf, sizeof(chkbuf), fd_params, p) < 0) { 2302 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p); 2303 ret = -1; 2304 goto out; 2305 } 2306 fd = strtol(buf, NULL, 0); 2307 fcntl(fd, F_SETFL, O_NONBLOCK); 2308 net_tap_fd_init(vlan, device, name, fd); 2309 ret = 0; 2310 } else { 2311 static const char * const tap_params[] = { 2312 "vlan", "name", "ifname", "script", "downscript", NULL 2313 }; 2314 if (check_params(chkbuf, sizeof(chkbuf), tap_params, p) < 0) { 2315 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p); 2316 ret = -1; 2317 goto out; 2318 } 2319 if (get_param_value(ifname, sizeof(ifname), "ifname", p) <= 0) { 2320 ifname[0] = '\0'; 2321 } 2322 if (get_param_value(setup_script, sizeof(setup_script), "script", p) == 0) { 2323 pstrcpy(setup_script, sizeof(setup_script), DEFAULT_NETWORK_SCRIPT); 2324 } 2325 if (get_param_value(down_script, sizeof(down_script), "downscript", p) == 0) { 2326 pstrcpy(down_script, sizeof(down_script), DEFAULT_NETWORK_DOWN_SCRIPT); 2327 } 2328 ret = net_tap_init(vlan, device, name, ifname, setup_script, down_script); 2329 } 2330 } else 2331#endif 2332 if (!strcmp(device, "socket")) { 2333 char chkbuf[64]; 2334 if (get_param_value(buf, sizeof(buf), "fd", p) > 0) { 2335 int fd; 2336 if (check_params(chkbuf, sizeof(chkbuf), fd_params, p) < 0) { 2337 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p); 2338 ret = -1; 2339 goto out; 2340 } 2341 fd = strtol(buf, NULL, 0); 2342 ret = -1; 2343 if (net_socket_fd_init(vlan, device, name, fd, 1)) 2344 ret = 0; 2345 } else if (get_param_value(buf, sizeof(buf), "listen", p) > 0) { 2346 static const char * const listen_params[] = { 2347 "vlan", "name", "listen", NULL 2348 }; 2349 if (check_params(chkbuf, sizeof(chkbuf), listen_params, p) < 0) { 2350 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p); 2351 ret = -1; 2352 goto out; 2353 } 2354 ret = net_socket_listen_init(vlan, device, name, buf); 2355 } else if (get_param_value(buf, sizeof(buf), "connect", p) > 0) { 2356 static const char * const connect_params[] = { 2357 "vlan", "name", "connect", NULL 2358 }; 2359 if (check_params(chkbuf, sizeof(chkbuf), connect_params, p) < 0) { 2360 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p); 2361 ret = -1; 2362 goto out; 2363 } 2364 ret = net_socket_connect_init(vlan, device, name, buf); 2365 } else if (get_param_value(buf, sizeof(buf), "mcast", p) > 0) { 2366 static const char * const mcast_params[] = { 2367 "vlan", "name", "mcast", NULL 2368 }; 2369 if (check_params(chkbuf, sizeof(chkbuf), mcast_params, p) < 0) { 2370 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p); 2371 ret = -1; 2372 goto out; 2373 } 2374 ret = net_socket_mcast_init(vlan, device, name, buf); 2375 } else { 2376 config_error(mon, "Unknown socket options: %s\n", p); 2377 ret = -1; 2378 goto out; 2379 } 2380 vlan->nb_host_devs++; 2381 } else 2382#ifdef CONFIG_VDE 2383 if (!strcmp(device, "vde")) { 2384 static const char * const vde_params[] = { 2385 "vlan", "name", "sock", "port", "group", "mode", NULL 2386 }; 2387 char vde_sock[1024], vde_group[512]; 2388 int vde_port, vde_mode; 2389 2390 if (check_params(buf, sizeof(buf), vde_params, p) < 0) { 2391 config_error(mon, "invalid parameter '%s' in '%s'\n", buf, p); 2392 ret = -1; 2393 goto out; 2394 } 2395 vlan->nb_host_devs++; 2396 if (get_param_value(vde_sock, sizeof(vde_sock), "sock", p) <= 0) { 2397 vde_sock[0] = '\0'; 2398 } 2399 if (get_param_value(buf, sizeof(buf), "port", p) > 0) { 2400 vde_port = strtol(buf, NULL, 10); 2401 } else { 2402 vde_port = 0; 2403 } 2404 if (get_param_value(vde_group, sizeof(vde_group), "group", p) <= 0) { 2405 vde_group[0] = '\0'; 2406 } 2407 if (get_param_value(buf, sizeof(buf), "mode", p) > 0) { 2408 vde_mode = strtol(buf, NULL, 8); 2409 } else { 2410 vde_mode = 0700; 2411 } 2412 ret = net_vde_init(vlan, device, name, vde_sock, vde_port, vde_group, vde_mode); 2413 } else 2414#endif 2415 if (!strcmp(device, "dump")) { 2416 int len = 65536; 2417 2418 if (get_param_value(buf, sizeof(buf), "len", p) > 0) { 2419 len = strtol(buf, NULL, 0); 2420 } 2421 if (!get_param_value(buf, sizeof(buf), "file", p)) { 2422 snprintf(buf, sizeof(buf), "qemu-vlan%d.pcap", vlan_id); 2423 } 2424 ret = net_dump_init(mon, vlan, device, name, buf, len); 2425 } else { 2426 config_error(mon, "Unknown network device: %s\n", device); 2427 ret = -1; 2428 goto out; 2429 } 2430 if (ret < 0) { 2431 config_error(mon, "Could not initialize device '%s'\n", device); 2432 } 2433out: 2434 qemu_free(name); 2435 return ret; 2436} 2437 2438void net_client_uninit(NICInfo *nd) 2439{ 2440 nd->vlan->nb_guest_devs--; 2441 nb_nics--; 2442 nd->used = 0; 2443 free((void *)nd->model); 2444} 2445 2446static int net_host_check_device(const char *device) 2447{ 2448 int i; 2449 const char *valid_param_list[] = { "tap", "socket", "dump" 2450#ifdef CONFIG_SLIRP 2451 ,"user" 2452#endif 2453#ifdef CONFIG_VDE 2454 ,"vde" 2455#endif 2456 }; 2457 for (i = 0; i < sizeof(valid_param_list) / sizeof(char *); i++) { 2458 if (!strncmp(valid_param_list[i], device, 2459 strlen(valid_param_list[i]))) 2460 return 1; 2461 } 2462 2463 return 0; 2464} 2465 2466void net_host_device_add(Monitor *mon, const char *device, const char *opts) 2467{ 2468 if (!net_host_check_device(device)) { 2469 monitor_printf(mon, "invalid host network device %s\n", device); 2470 return; 2471 } 2472 if (net_client_init(mon, device, opts ? opts : "") < 0) { 2473 monitor_printf(mon, "adding host network device %s failed\n", device); 2474 } 2475} 2476 2477void net_host_device_remove(Monitor *mon, int vlan_id, const char *device) 2478{ 2479 VLANState *vlan; 2480 VLANClientState *vc; 2481 2482 vlan = qemu_find_vlan(vlan_id); 2483 2484 for (vc = vlan->first_client; vc != NULL; vc = vc->next) { 2485 if (!strcmp(vc->name, device)) { 2486 break; 2487 } 2488 } 2489 2490 if (!vc) { 2491 monitor_printf(mon, "can't find device %s\n", device); 2492 return; 2493 } 2494 if (!net_host_check_device(vc->model)) { 2495 monitor_printf(mon, "invalid host network device %s\n", device); 2496 return; 2497 } 2498 qemu_del_vlan_client(vc); 2499} 2500 2501int net_client_parse(const char *str) 2502{ 2503 const char *p; 2504 char *q; 2505 char device[64]; 2506 2507 p = str; 2508 q = device; 2509 while (*p != '\0' && *p != ',') { 2510 if ((q - device) < sizeof(device) - 1) 2511 *q++ = *p; 2512 p++; 2513 } 2514 *q = '\0'; 2515 if (*p == ',') 2516 p++; 2517 2518 return net_client_init(NULL, device, p); 2519} 2520 2521void do_info_network(Monitor *mon) 2522{ 2523 VLANState *vlan; 2524 VLANClientState *vc; 2525 2526 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) { 2527 monitor_printf(mon, "VLAN %d devices:\n", vlan->id); 2528 for(vc = vlan->first_client; vc != NULL; vc = vc->next) 2529 monitor_printf(mon, " %s: %s\n", vc->name, vc->info_str); 2530 } 2531} 2532 2533int do_set_link(Monitor *mon, const char *name, const char *up_or_down) 2534{ 2535 VLANState *vlan; 2536 VLANClientState *vc = NULL; 2537 2538 for (vlan = first_vlan; vlan != NULL; vlan = vlan->next) 2539 for (vc = vlan->first_client; vc != NULL; vc = vc->next) 2540 if (strcmp(vc->name, name) == 0) 2541 goto done; 2542done: 2543 2544 if (!vc) { 2545 monitor_printf(mon, "could not find network device '%s'", name); 2546 return 0; 2547 } 2548 2549 if (strcmp(up_or_down, "up") == 0) 2550 vc->link_down = 0; 2551 else if (strcmp(up_or_down, "down") == 0) 2552 vc->link_down = 1; 2553 else 2554 monitor_printf(mon, "invalid link status '%s'; only 'up' or 'down' " 2555 "valid\n", up_or_down); 2556 2557 if (vc->link_status_changed) 2558 vc->link_status_changed(vc); 2559 2560 return 1; 2561} 2562 2563void net_cleanup(void) 2564{ 2565 VLANState *vlan; 2566 2567 /* close network clients */ 2568 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) { 2569 VLANClientState *vc = vlan->first_client; 2570 2571 while (vc) { 2572 VLANClientState *next = vc->next; 2573 2574 qemu_del_vlan_client(vc); 2575 2576 vc = next; 2577 } 2578 } 2579} 2580 2581void net_client_check(void) 2582{ 2583 VLANState *vlan; 2584 2585 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) { 2586 if (vlan->nb_guest_devs == 0 && vlan->nb_host_devs == 0) 2587 continue; 2588 if (vlan->nb_guest_devs == 0) 2589 fprintf(stderr, "Warning: vlan %d with no nics\n", vlan->id); 2590 if (vlan->nb_host_devs == 0) 2591 fprintf(stderr, 2592 "Warning: vlan %d is not connected to host network\n", 2593 vlan->id); 2594 } 2595} 2596