ifc_utils.c revision 0c613613d757c544d6ec7e5678f49a631a99d72a
1/* 2 * Copyright 2008, The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17#include <stdio.h> 18#include <stdlib.h> 19#include <unistd.h> 20#include <string.h> 21#include <errno.h> 22 23#include <sys/socket.h> 24#include <sys/select.h> 25#include <sys/types.h> 26#include <netinet/in.h> 27#include <arpa/inet.h> 28#include <net/if.h> 29 30#include <linux/if.h> 31#include <linux/if_ether.h> 32#include <linux/if_arp.h> 33#include <linux/sockios.h> 34#include <linux/route.h> 35#include <linux/ipv6_route.h> 36#include <netdb.h> 37#include <linux/wireless.h> 38 39#ifdef ANDROID 40#define LOG_TAG "NetUtils" 41#include <cutils/log.h> 42#include <cutils/properties.h> 43#else 44#include <stdio.h> 45#include <string.h> 46#define LOGD printf 47#define LOGW printf 48#endif 49 50static int ifc_ctl_sock = -1; 51static int ifc_ctl_sock6 = -1; 52void printerr(char *fmt, ...); 53 54#define DBG 0 55 56in_addr_t prefixLengthToIpv4Netmask(int prefix_length) 57{ 58 in_addr_t mask = 0; 59 60 // C99 (6.5.7): shifts of 32 bits have undefined results 61 if (prefix_length <= 0 || prefix_length > 32) { 62 return 0; 63 } 64 65 mask = ~mask << (32 - prefix_length); 66 mask = htonl(mask); 67 68 return mask; 69} 70 71int ipv4NetmaskToPrefixLength(in_addr_t mask) 72{ 73 mask = ntohl(mask); 74 int prefixLength = 0; 75 uint32_t m = (uint32_t)mask; 76 while (m & 0x80000000) { 77 prefixLength++; 78 m = m << 1; 79 } 80 return prefixLength; 81} 82 83static const char *ipaddr_to_string(in_addr_t addr) 84{ 85 struct in_addr in_addr; 86 87 in_addr.s_addr = addr; 88 return inet_ntoa(in_addr); 89} 90 91int ifc_init(void) 92{ 93 int ret; 94 if (ifc_ctl_sock == -1) { 95 ifc_ctl_sock = socket(AF_INET, SOCK_DGRAM, 0); 96 if (ifc_ctl_sock < 0) { 97 printerr("socket() failed: %s\n", strerror(errno)); 98 } 99 } 100 101 ret = ifc_ctl_sock < 0 ? -1 : 0; 102 if (DBG) printerr("ifc_init_returning %d", ret); 103 return ret; 104} 105 106int ifc_init6(void) 107{ 108 if (ifc_ctl_sock6 == -1) { 109 ifc_ctl_sock6 = socket(AF_INET6, SOCK_DGRAM, 0); 110 if (ifc_ctl_sock6 < 0) { 111 printerr("socket() failed: %s\n", strerror(errno)); 112 } 113 } 114 return ifc_ctl_sock6 < 0 ? -1 : 0; 115} 116 117void ifc_close(void) 118{ 119 if (DBG) printerr("ifc_close"); 120 if (ifc_ctl_sock != -1) { 121 (void)close(ifc_ctl_sock); 122 ifc_ctl_sock = -1; 123 } 124} 125 126void ifc_close6(void) 127{ 128 if (ifc_ctl_sock6 != -1) { 129 (void)close(ifc_ctl_sock6); 130 ifc_ctl_sock6 = -1; 131 } 132} 133 134static void ifc_init_ifr(const char *name, struct ifreq *ifr) 135{ 136 memset(ifr, 0, sizeof(struct ifreq)); 137 strncpy(ifr->ifr_name, name, IFNAMSIZ); 138 ifr->ifr_name[IFNAMSIZ - 1] = 0; 139} 140 141int ifc_get_hwaddr(const char *name, void *ptr) 142{ 143 int r; 144 struct ifreq ifr; 145 ifc_init_ifr(name, &ifr); 146 147 r = ioctl(ifc_ctl_sock, SIOCGIFHWADDR, &ifr); 148 if(r < 0) return -1; 149 150 memcpy(ptr, &ifr.ifr_hwaddr.sa_data, ETH_ALEN); 151 return 0; 152} 153 154int ifc_get_ifindex(const char *name, int *if_indexp) 155{ 156 int r; 157 struct ifreq ifr; 158 ifc_init_ifr(name, &ifr); 159 160 r = ioctl(ifc_ctl_sock, SIOCGIFINDEX, &ifr); 161 if(r < 0) return -1; 162 163 *if_indexp = ifr.ifr_ifindex; 164 return 0; 165} 166 167static int ifc_set_flags(const char *name, unsigned set, unsigned clr) 168{ 169 struct ifreq ifr; 170 ifc_init_ifr(name, &ifr); 171 172 if(ioctl(ifc_ctl_sock, SIOCGIFFLAGS, &ifr) < 0) return -1; 173 ifr.ifr_flags = (ifr.ifr_flags & (~clr)) | set; 174 return ioctl(ifc_ctl_sock, SIOCSIFFLAGS, &ifr); 175} 176 177int ifc_up(const char *name) 178{ 179 int ret = ifc_set_flags(name, IFF_UP, 0); 180 if (DBG) printerr("ifc_up(%s) = %d", name, ret); 181 return ret; 182} 183 184int ifc_down(const char *name) 185{ 186 int ret = ifc_set_flags(name, 0, IFF_UP); 187 if (DBG) printerr("ifc_down(%s) = %d", name, ret); 188 return ret; 189} 190 191static void init_sockaddr_in(struct sockaddr *sa, in_addr_t addr) 192{ 193 struct sockaddr_in *sin = (struct sockaddr_in *) sa; 194 sin->sin_family = AF_INET; 195 sin->sin_port = 0; 196 sin->sin_addr.s_addr = addr; 197} 198 199int ifc_set_addr(const char *name, in_addr_t addr) 200{ 201 struct ifreq ifr; 202 int ret; 203 204 ifc_init_ifr(name, &ifr); 205 init_sockaddr_in(&ifr.ifr_addr, addr); 206 207 ret = ioctl(ifc_ctl_sock, SIOCSIFADDR, &ifr); 208 if (DBG) printerr("ifc_set_addr(%s, xx) = %d", name, ret); 209 return ret; 210} 211 212int ifc_set_hwaddr(const char *name, const void *ptr) 213{ 214 int r; 215 struct ifreq ifr; 216 ifc_init_ifr(name, &ifr); 217 218 ifr.ifr_hwaddr.sa_family = ARPHRD_ETHER; 219 memcpy(&ifr.ifr_hwaddr.sa_data, ptr, ETH_ALEN); 220 return ioctl(ifc_ctl_sock, SIOCSIFHWADDR, &ifr); 221} 222 223int ifc_set_mask(const char *name, in_addr_t mask) 224{ 225 struct ifreq ifr; 226 int ret; 227 228 ifc_init_ifr(name, &ifr); 229 init_sockaddr_in(&ifr.ifr_addr, mask); 230 231 ret = ioctl(ifc_ctl_sock, SIOCSIFNETMASK, &ifr); 232 if (DBG) printerr("ifc_set_mask(%s, xx) = %d", name, ret); 233 return ret; 234} 235 236int ifc_set_prefixLength(const char *name, int prefixLength) 237{ 238 struct ifreq ifr; 239 // TODO - support ipv6 240 if (prefixLength > 32 || prefixLength < 0) return -1; 241 242 in_addr_t mask = prefixLengthToIpv4Netmask(prefixLength); 243 ifc_init_ifr(name, &ifr); 244 init_sockaddr_in(&ifr.ifr_addr, mask); 245 246 return ioctl(ifc_ctl_sock, SIOCSIFNETMASK, &ifr); 247} 248 249int ifc_get_addr(const char *name, in_addr_t *addr) 250{ 251 struct ifreq ifr; 252 int ret = 0; 253 254 ifc_init_ifr(name, &ifr); 255 if (addr != NULL) { 256 ret = ioctl(ifc_ctl_sock, SIOCGIFADDR, &ifr); 257 if (ret < 0) { 258 *addr = 0; 259 } else { 260 *addr = ((struct sockaddr_in*) &ifr.ifr_addr)->sin_addr.s_addr; 261 } 262 } 263 return ret; 264} 265 266int ifc_get_info(const char *name, in_addr_t *addr, int *prefixLength, unsigned *flags) 267{ 268 struct ifreq ifr; 269 ifc_init_ifr(name, &ifr); 270 271 if (addr != NULL) { 272 if(ioctl(ifc_ctl_sock, SIOCGIFADDR, &ifr) < 0) { 273 *addr = 0; 274 } else { 275 *addr = ((struct sockaddr_in*) &ifr.ifr_addr)->sin_addr.s_addr; 276 } 277 } 278 279 if (prefixLength != NULL) { 280 if(ioctl(ifc_ctl_sock, SIOCGIFNETMASK, &ifr) < 0) { 281 *prefixLength = 0; 282 } else { 283 *prefixLength = ipv4NetmaskToPrefixLength((int) 284 ((struct sockaddr_in*) &ifr.ifr_addr)->sin_addr.s_addr); 285 } 286 } 287 288 if (flags != NULL) { 289 if(ioctl(ifc_ctl_sock, SIOCGIFFLAGS, &ifr) < 0) { 290 *flags = 0; 291 } else { 292 *flags = ifr.ifr_flags; 293 } 294 } 295 296 return 0; 297} 298 299int ifc_act_on_ipv4_route(int action, const char *ifname, struct in_addr dst, int prefix_length, 300 struct in_addr gw) 301{ 302 struct rtentry rt; 303 int result; 304 in_addr_t netmask; 305 306 memset(&rt, 0, sizeof(rt)); 307 308 rt.rt_dst.sa_family = AF_INET; 309 rt.rt_dev = (void*) ifname; 310 311 netmask = prefixLengthToIpv4Netmask(prefix_length); 312 init_sockaddr_in(&rt.rt_genmask, netmask); 313 init_sockaddr_in(&rt.rt_dst, dst.s_addr); 314 rt.rt_flags = RTF_UP; 315 316 if (prefix_length == 32) { 317 rt.rt_flags |= RTF_HOST; 318 } 319 320 if (gw.s_addr != 0) { 321 rt.rt_flags |= RTF_GATEWAY; 322 init_sockaddr_in(&rt.rt_gateway, gw.s_addr); 323 } 324 325 ifc_init(); 326 327 if (ifc_ctl_sock < 0) { 328 return -errno; 329 } 330 331 result = ioctl(ifc_ctl_sock, action, &rt); 332 if (result < 0) { 333 if (errno == EEXIST) { 334 result = 0; 335 } else { 336 result = -errno; 337 } 338 } 339 ifc_close(); 340 return result; 341} 342 343/* deprecated - v4 only */ 344int ifc_create_default_route(const char *name, in_addr_t gw) 345{ 346 struct in_addr in_dst, in_gw; 347 348 in_dst.s_addr = 0; 349 in_gw.s_addr = gw; 350 351 int ret = ifc_act_on_ipv4_route(SIOCADDRT, name, in_dst, 0, in_gw); 352 if (DBG) printerr("ifc_create_default_route(%s, %d) = %d", name, gw, ret); 353 return ret; 354} 355 356/* deprecated v4-only */ 357int ifc_add_host_route(const char *name, in_addr_t dst) 358{ 359 struct in_addr in_dst, in_gw; 360 361 in_dst.s_addr = dst; 362 in_gw.s_addr = 0; 363 364 return ifc_act_on_ipv4_route(SIOCADDRT, name, in_dst, 32, in_gw); 365} 366 367int ifc_enable(const char *ifname) 368{ 369 int result; 370 371 ifc_init(); 372 result = ifc_up(ifname); 373 ifc_close(); 374 return result; 375} 376 377int ifc_disable(const char *ifname) 378{ 379 unsigned addr, count; 380 int result; 381 382 ifc_init(); 383 result = ifc_down(ifname); 384 385 ifc_set_addr(ifname, 0); 386 for (count=0, addr=1;((addr != 0) && (count < 255)); count++) { 387 if (ifc_get_addr(ifname, &addr) < 0) 388 break; 389 if (addr) 390 ifc_set_addr(ifname, 0); 391 } 392 393 ifc_close(); 394 return result; 395} 396 397#define RESET_IPV4_ADDRESSES 0x01 398#define RESET_IPV6_ADDRESSES 0x02 399#define RESET_ALL_ADDRESSES (RESET_IPV4_ADDRESSES | RESET_IPV6_ADDRESSES) 400 401int ifc_reset_connections(const char *ifname, const int reset_mask) 402{ 403#ifdef HAVE_ANDROID_OS 404 int result, success; 405 in_addr_t myaddr; 406 struct ifreq ifr; 407 struct in6_ifreq ifr6; 408 409 if (reset_mask & RESET_IPV4_ADDRESSES) { 410 /* IPv4. Clear connections on the IP address. */ 411 ifc_init(); 412 ifc_get_info(ifname, &myaddr, NULL, NULL); 413 ifc_init_ifr(ifname, &ifr); 414 init_sockaddr_in(&ifr.ifr_addr, myaddr); 415 result = ioctl(ifc_ctl_sock, SIOCKILLADDR, &ifr); 416 ifc_close(); 417 } else { 418 result = 0; 419 } 420 421 if (reset_mask & RESET_IPV6_ADDRESSES) { 422 /* 423 * IPv6. On Linux, when an interface goes down it loses all its IPv6 424 * addresses, so we don't know which connections belonged to that interface 425 * So we clear all unused IPv6 connections on the device by specifying an 426 * empty IPv6 address. 427 */ 428 ifc_init6(); 429 // This implicitly specifies an address of ::, i.e., kill all IPv6 sockets. 430 memset(&ifr6, 0, sizeof(ifr6)); 431 success = ioctl(ifc_ctl_sock6, SIOCKILLADDR, &ifr6); 432 if (result == 0) { 433 result = success; 434 } 435 ifc_close6(); 436 } 437 438 return result; 439#else 440 return 0; 441#endif 442} 443 444/* 445 * Remove the routes associated with the named interface. 446 */ 447int ifc_remove_host_routes(const char *name) 448{ 449 char ifname[64]; 450 in_addr_t dest, gway, mask; 451 int flags, refcnt, use, metric, mtu, win, irtt; 452 struct rtentry rt; 453 FILE *fp; 454 struct in_addr addr; 455 456 fp = fopen("/proc/net/route", "r"); 457 if (fp == NULL) 458 return -1; 459 /* Skip the header line */ 460 if (fscanf(fp, "%*[^\n]\n") < 0) { 461 fclose(fp); 462 return -1; 463 } 464 ifc_init(); 465 for (;;) { 466 int nread = fscanf(fp, "%63s%X%X%X%d%d%d%X%d%d%d\n", 467 ifname, &dest, &gway, &flags, &refcnt, &use, &metric, &mask, 468 &mtu, &win, &irtt); 469 if (nread != 11) { 470 break; 471 } 472 if ((flags & (RTF_UP|RTF_HOST)) != (RTF_UP|RTF_HOST) 473 || strcmp(ifname, name) != 0) { 474 continue; 475 } 476 memset(&rt, 0, sizeof(rt)); 477 rt.rt_dev = (void *)name; 478 init_sockaddr_in(&rt.rt_dst, dest); 479 init_sockaddr_in(&rt.rt_gateway, gway); 480 init_sockaddr_in(&rt.rt_genmask, mask); 481 addr.s_addr = dest; 482 if (ioctl(ifc_ctl_sock, SIOCDELRT, &rt) < 0) { 483 LOGD("failed to remove route for %s to %s: %s", 484 ifname, inet_ntoa(addr), strerror(errno)); 485 } 486 } 487 fclose(fp); 488 ifc_close(); 489 return 0; 490} 491 492/* 493 * Return the address of the default gateway 494 * 495 * TODO: factor out common code from this and remove_host_routes() 496 * so that we only scan /proc/net/route in one place. 497 * 498 * DEPRECATED 499 */ 500int ifc_get_default_route(const char *ifname) 501{ 502 char name[64]; 503 in_addr_t dest, gway, mask; 504 int flags, refcnt, use, metric, mtu, win, irtt; 505 int result; 506 FILE *fp; 507 508 fp = fopen("/proc/net/route", "r"); 509 if (fp == NULL) 510 return 0; 511 /* Skip the header line */ 512 if (fscanf(fp, "%*[^\n]\n") < 0) { 513 fclose(fp); 514 return 0; 515 } 516 ifc_init(); 517 result = 0; 518 for (;;) { 519 int nread = fscanf(fp, "%63s%X%X%X%d%d%d%X%d%d%d\n", 520 name, &dest, &gway, &flags, &refcnt, &use, &metric, &mask, 521 &mtu, &win, &irtt); 522 if (nread != 11) { 523 break; 524 } 525 if ((flags & (RTF_UP|RTF_GATEWAY)) == (RTF_UP|RTF_GATEWAY) 526 && dest == 0 527 && strcmp(ifname, name) == 0) { 528 result = gway; 529 break; 530 } 531 } 532 fclose(fp); 533 ifc_close(); 534 return result; 535} 536 537/* 538 * Sets the specified gateway as the default route for the named interface. 539 * DEPRECATED 540 */ 541int ifc_set_default_route(const char *ifname, in_addr_t gateway) 542{ 543 struct in_addr addr; 544 int result; 545 546 ifc_init(); 547 addr.s_addr = gateway; 548 if ((result = ifc_create_default_route(ifname, gateway)) < 0) { 549 LOGD("failed to add %s as default route for %s: %s", 550 inet_ntoa(addr), ifname, strerror(errno)); 551 } 552 ifc_close(); 553 return result; 554} 555 556/* 557 * Removes the default route for the named interface. 558 */ 559int ifc_remove_default_route(const char *ifname) 560{ 561 struct rtentry rt; 562 int result; 563 564 ifc_init(); 565 memset(&rt, 0, sizeof(rt)); 566 rt.rt_dev = (void *)ifname; 567 rt.rt_flags = RTF_UP|RTF_GATEWAY; 568 init_sockaddr_in(&rt.rt_dst, 0); 569 if ((result = ioctl(ifc_ctl_sock, SIOCDELRT, &rt)) < 0) { 570 LOGD("failed to remove default route for %s: %s", ifname, strerror(errno)); 571 } 572 ifc_close(); 573 return result; 574} 575 576int 577ifc_configure(const char *ifname, 578 in_addr_t address, 579 uint32_t prefixLength, 580 in_addr_t gateway, 581 in_addr_t dns1, 582 in_addr_t dns2) { 583 584 char dns_prop_name[PROPERTY_KEY_MAX]; 585 586 ifc_init(); 587 588 if (ifc_up(ifname)) { 589 printerr("failed to turn on interface %s: %s\n", ifname, strerror(errno)); 590 ifc_close(); 591 return -1; 592 } 593 if (ifc_set_addr(ifname, address)) { 594 printerr("failed to set ipaddr %s: %s\n", ipaddr_to_string(address), strerror(errno)); 595 ifc_close(); 596 return -1; 597 } 598 if (ifc_set_prefixLength(ifname, prefixLength)) { 599 printerr("failed to set prefixLength %d: %s\n", prefixLength, strerror(errno)); 600 ifc_close(); 601 return -1; 602 } 603 if (ifc_create_default_route(ifname, gateway)) { 604 printerr("failed to set default route %s: %s\n", ipaddr_to_string(gateway), strerror(errno)); 605 ifc_close(); 606 return -1; 607 } 608 609 ifc_close(); 610 611 snprintf(dns_prop_name, sizeof(dns_prop_name), "net.%s.dns1", ifname); 612 property_set(dns_prop_name, dns1 ? ipaddr_to_string(dns1) : ""); 613 snprintf(dns_prop_name, sizeof(dns_prop_name), "net.%s.dns2", ifname); 614 property_set(dns_prop_name, dns2 ? ipaddr_to_string(dns2) : ""); 615 616 return 0; 617} 618 619int ifc_act_on_ipv6_route(int action, const char *ifname, struct in6_addr dst, int prefix_length, 620 struct in6_addr gw) 621{ 622 struct in6_rtmsg rtmsg; 623 int result; 624 int ifindex; 625 626 memset(&rtmsg, 0, sizeof(rtmsg)); 627 628 ifindex = if_nametoindex(ifname); 629 if (ifindex == 0) { 630 printerr("if_nametoindex() failed: interface %s\n", ifname); 631 return -ENXIO; 632 } 633 634 rtmsg.rtmsg_ifindex = ifindex; 635 rtmsg.rtmsg_dst = dst; 636 rtmsg.rtmsg_dst_len = prefix_length; 637 rtmsg.rtmsg_flags = RTF_UP; 638 639 if (prefix_length == 128) { 640 rtmsg.rtmsg_flags |= RTF_HOST; 641 } 642 643 if (memcmp(&gw, &in6addr_any, sizeof(in6addr_any))) { 644 rtmsg.rtmsg_flags |= RTF_GATEWAY; 645 rtmsg.rtmsg_gateway = gw; 646 } 647 648 ifc_init6(); 649 650 if (ifc_ctl_sock6 < 0) { 651 return -errno; 652 } 653 654 result = ioctl(ifc_ctl_sock6, action, &rtmsg); 655 if (result < 0) { 656 if (errno == EEXIST) { 657 result = 0; 658 } else { 659 result = -errno; 660 } 661 } 662 ifc_close6(); 663 return result; 664} 665 666int ifc_act_on_route(int action, const char *ifname, const char *dst, int prefix_length, 667 const char *gw) 668{ 669 int ret = 0; 670 struct sockaddr_in ipv4_dst, ipv4_gw; 671 struct sockaddr_in6 ipv6_dst, ipv6_gw; 672 struct addrinfo hints, *addr_ai, *gw_ai; 673 674 memset(&hints, 0, sizeof(hints)); 675 hints.ai_family = AF_UNSPEC; /* Allow IPv4 or IPv6 */ 676 hints.ai_flags = AI_NUMERICHOST; 677 678 ret = getaddrinfo(dst, NULL, &hints, &addr_ai); 679 680 if (ret != 0) { 681 printerr("getaddrinfo failed: invalid address %s\n", dst); 682 return -EINVAL; 683 } 684 685 if (gw == NULL || (strlen(gw) == 0)) { 686 if (addr_ai->ai_family == AF_INET6) { 687 gw = "::"; 688 } else if (addr_ai->ai_family == AF_INET) { 689 gw = "0.0.0.0"; 690 } 691 } 692 693 if (((addr_ai->ai_family == AF_INET6) && (prefix_length < 0 || prefix_length > 128)) || 694 ((addr_ai->ai_family == AF_INET) && (prefix_length < 0 || prefix_length > 32))) { 695 printerr("ifc_add_route: invalid prefix length"); 696 freeaddrinfo(addr_ai); 697 return -EINVAL; 698 } 699 700 ret = getaddrinfo(gw, NULL, &hints, &gw_ai); 701 if (ret != 0) { 702 printerr("getaddrinfo failed: invalid gateway %s\n", gw); 703 freeaddrinfo(addr_ai); 704 return -EINVAL; 705 } 706 707 if (addr_ai->ai_family != gw_ai->ai_family) { 708 printerr("ifc_add_route: different address families: %s and %s\n", dst, gw); 709 freeaddrinfo(addr_ai); 710 freeaddrinfo(gw_ai); 711 return -EINVAL; 712 } 713 714 if (addr_ai->ai_family == AF_INET6) { 715 memcpy(&ipv6_dst, addr_ai->ai_addr, sizeof(struct sockaddr_in6)); 716 memcpy(&ipv6_gw, gw_ai->ai_addr, sizeof(struct sockaddr_in6)); 717 ret = ifc_act_on_ipv6_route(action, ifname, ipv6_dst.sin6_addr, 718 prefix_length, ipv6_gw.sin6_addr); 719 } else if (addr_ai->ai_family == AF_INET) { 720 memcpy(&ipv4_dst, addr_ai->ai_addr, sizeof(struct sockaddr_in)); 721 memcpy(&ipv4_gw, gw_ai->ai_addr, sizeof(struct sockaddr_in)); 722 ret = ifc_act_on_ipv4_route(action, ifname, ipv4_dst.sin_addr, 723 prefix_length, ipv4_gw.sin_addr); 724 } else { 725 printerr("ifc_add_route: getaddrinfo returned un supported address family %d\n", 726 addr_ai->ai_family); 727 ret = -EAFNOSUPPORT; 728 } 729 730 freeaddrinfo(addr_ai); 731 freeaddrinfo(gw_ai); 732 return ret; 733} 734 735/* 736 * DEPRECATED 737 */ 738int ifc_add_ipv4_route(const char *ifname, struct in_addr dst, int prefix_length, 739 struct in_addr gw) 740{ 741 int i =ifc_act_on_ipv4_route(SIOCADDRT, ifname, dst, prefix_length, gw); 742 if (DBG) printerr("ifc_add_ipv4_route(%s, xx, %d, xx) = %d", ifname, prefix_length, i); 743 return i; 744} 745 746/* 747 * DEPRECATED 748 */ 749int ifc_add_ipv6_route(const char *ifname, struct in6_addr dst, int prefix_length, 750 struct in6_addr gw) 751{ 752 return ifc_act_on_ipv6_route(SIOCADDRT, ifname, dst, prefix_length, gw); 753} 754 755int ifc_add_route(const char *ifname, const char *dst, int prefix_length, const char *gw) 756{ 757 int i = ifc_act_on_route(SIOCADDRT, ifname, dst, prefix_length, gw); 758 if (DBG) printerr("ifc_add_route(%s, %s, %d, %s) = %d", ifname, dst, prefix_length, gw, i); 759 return i; 760} 761 762int ifc_remove_route(const char *ifname, const char*dst, int prefix_length, const char *gw) 763{ 764 return ifc_act_on_route(SIOCDELRT, ifname, dst, prefix_length, gw); 765} 766