5 * Copyright (C) 2007-2010 Intel Corporation. All rights reserved.
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
32 #include <sys/ioctl.h>
33 #include <sys/socket.h>
34 #include <arpa/inet.h>
35 #include <net/route.h>
36 #include <net/ethernet.h>
37 #include <linux/if_arp.h>
38 #include <linux/wireless.h>
42 #define NLMSG_TAIL(nmsg) \
43 ((struct rtattr *) (((uint8_t*) (nmsg)) + \
44 NLMSG_ALIGN((nmsg)->nlmsg_len)))
46 static int add_rtattr(struct nlmsghdr *n, size_t max_length, int type,
47 const void *data, size_t data_length)
52 length = RTA_LENGTH(data_length);
54 if (NLMSG_ALIGN(n->nlmsg_len) + RTA_ALIGN(length) > max_length)
59 rta->rta_len = length;
60 memcpy(RTA_DATA(rta), data, data_length);
61 n->nlmsg_len = NLMSG_ALIGN(n->nlmsg_len) + RTA_ALIGN(length);
66 int __connman_inet_modify_address(int cmd, int flags,
67 int index, int family,
70 unsigned char prefixlen,
71 const char *broadcast)
73 uint8_t request[NLMSG_ALIGN(sizeof(struct nlmsghdr)) +
74 NLMSG_ALIGN(sizeof(struct ifaddrmsg)) +
75 RTA_LENGTH(sizeof(struct in6_addr)) +
76 RTA_LENGTH(sizeof(struct in6_addr))];
78 struct nlmsghdr *header;
79 struct sockaddr_nl nl_addr;
80 struct ifaddrmsg *ifaddrmsg;
81 struct in6_addr ipv6_addr;
82 struct in_addr ipv4_addr, ipv4_dest, ipv4_bcast;
90 if (family != AF_INET && family != AF_INET6)
93 memset(&request, 0, sizeof(request));
95 header = (struct nlmsghdr *)request;
96 header->nlmsg_len = NLMSG_LENGTH(sizeof(struct ifaddrmsg));
97 header->nlmsg_type = cmd;
98 header->nlmsg_flags = NLM_F_REQUEST | flags;
99 header->nlmsg_seq = 1;
101 ifaddrmsg = NLMSG_DATA(header);
102 ifaddrmsg->ifa_family = family;
103 ifaddrmsg->ifa_prefixlen = prefixlen;
104 ifaddrmsg->ifa_flags = IFA_F_PERMANENT;
105 ifaddrmsg->ifa_scope = RT_SCOPE_UNIVERSE;
106 ifaddrmsg->ifa_index = index;
108 if (family == AF_INET) {
109 if (inet_pton(AF_INET, address, &ipv4_addr) < 1)
112 if (broadcast != NULL)
113 inet_pton(AF_INET, broadcast, &ipv4_bcast);
115 ipv4_bcast.s_addr = ipv4_addr.s_addr |
116 htonl(0xfffffffflu >> prefixlen);
119 if (inet_pton(AF_INET, peer, &ipv4_dest) < 1)
122 if ((err = add_rtattr(header, sizeof(request),
124 &ipv4_dest, sizeof(ipv4_dest))) < 0)
128 if ((err = add_rtattr(header, sizeof(request), IFA_LOCAL,
129 &ipv4_addr, sizeof(ipv4_addr))) < 0)
132 if ((err = add_rtattr(header, sizeof(request), IFA_BROADCAST,
133 &ipv4_bcast, sizeof(ipv4_bcast))) < 0)
136 } else if (family == AF_INET6) {
137 if (inet_pton(AF_INET6, address, &ipv6_addr) < 1)
140 if ((err = add_rtattr(header, sizeof(request), IFA_LOCAL,
141 &ipv6_addr, sizeof(ipv6_addr))) < 0)
145 sk = socket(AF_NETLINK, SOCK_DGRAM, NETLINK_ROUTE);
149 memset(&nl_addr, 0, sizeof(nl_addr));
150 nl_addr.nl_family = AF_NETLINK;
152 if ((err = sendto(sk, request, header->nlmsg_len, 0,
153 (struct sockaddr *) &nl_addr, sizeof(nl_addr))) < 0)
164 int connman_inet_ifindex(const char *name)
172 sk = socket(PF_INET, SOCK_DGRAM, 0);
176 memset(&ifr, 0, sizeof(ifr));
177 strncpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
179 err = ioctl(sk, SIOCGIFINDEX, &ifr);
186 return ifr.ifr_ifindex;
189 char *connman_inet_ifname(int index)
197 sk = socket(PF_INET, SOCK_DGRAM, 0);
201 memset(&ifr, 0, sizeof(ifr));
202 ifr.ifr_ifindex = index;
204 err = ioctl(sk, SIOCGIFNAME, &ifr);
211 return strdup(ifr.ifr_name);
214 short int connman_inet_ifflags(int index)
219 sk = socket(PF_INET, SOCK_DGRAM, 0);
223 memset(&ifr, 0, sizeof(ifr));
224 ifr.ifr_ifindex = index;
226 if (ioctl(sk, SIOCGIFNAME, &ifr) < 0) {
231 if (ioctl(sk, SIOCGIFFLAGS, &ifr) < 0) {
244 int connman_inet_ifup(int index)
249 sk = socket(PF_INET, SOCK_DGRAM, 0);
253 memset(&ifr, 0, sizeof(ifr));
254 ifr.ifr_ifindex = index;
256 if (ioctl(sk, SIOCGIFNAME, &ifr) < 0) {
261 if (ioctl(sk, SIOCGIFFLAGS, &ifr) < 0) {
266 if (ifr.ifr_flags & IFF_UP) {
271 ifr.ifr_flags |= IFF_UP;
273 if (ioctl(sk, SIOCSIFFLAGS, &ifr) < 0) {
286 int connman_inet_ifdown(int index)
291 sk = socket(PF_INET, SOCK_DGRAM, 0);
295 memset(&ifr, 0, sizeof(ifr));
296 ifr.ifr_ifindex = index;
298 if (ioctl(sk, SIOCGIFNAME, &ifr) < 0) {
303 if (ioctl(sk, SIOCGIFFLAGS, &ifr) < 0) {
308 if (!(ifr.ifr_flags & IFF_UP)) {
313 ifr.ifr_flags &= ~IFF_UP;
315 if (ioctl(sk, SIOCSIFFLAGS, &ifr) < 0)
326 static char *index2addr(int index)
329 struct ether_addr eth;
336 sk = socket(PF_INET, SOCK_DGRAM, 0);
340 memset(&ifr, 0, sizeof(ifr));
341 ifr.ifr_ifindex = index;
343 err = ioctl(sk, SIOCGIFNAME, &ifr);
346 err = ioctl(sk, SIOCGIFHWADDR, &ifr);
357 memcpy(ð, &ifr.ifr_hwaddr.sa_data, sizeof(eth));
358 snprintf(str, 18, "%02X:%02X:%02X:%02X:%02X:%02X",
359 eth.ether_addr_octet[0],
360 eth.ether_addr_octet[1],
361 eth.ether_addr_octet[2],
362 eth.ether_addr_octet[3],
363 eth.ether_addr_octet[4],
364 eth.ether_addr_octet[5]);
369 static char *index2ident(int index, const char *prefix)
372 struct ether_addr eth;
379 sk = socket(PF_INET, SOCK_DGRAM, 0);
383 memset(&ifr, 0, sizeof(ifr));
384 ifr.ifr_ifindex = index;
386 err = ioctl(sk, SIOCGIFNAME, &ifr);
389 err = ioctl(sk, SIOCGIFHWADDR, &ifr);
396 len = prefix ? strlen(prefix) + 18 : 18;
402 memcpy(ð, &ifr.ifr_hwaddr.sa_data, sizeof(eth));
403 snprintf(str, len, "%s%02x%02x%02x%02x%02x%02x",
404 prefix ? prefix : "",
405 eth.ether_addr_octet[0],
406 eth.ether_addr_octet[1],
407 eth.ether_addr_octet[2],
408 eth.ether_addr_octet[3],
409 eth.ether_addr_octet[4],
410 eth.ether_addr_octet[5]);
415 connman_bool_t connman_inet_is_cfg80211(int index)
417 connman_bool_t result = FALSE;
418 char phy80211_path[PATH_MAX];
423 sk = socket(PF_INET, SOCK_DGRAM, 0);
427 memset(&ifr, 0, sizeof(ifr));
428 ifr.ifr_ifindex = index;
430 if (ioctl(sk, SIOCGIFNAME, &ifr) < 0)
433 snprintf(phy80211_path, PATH_MAX,
434 "/sys/class/net/%s/phy80211", ifr.ifr_name);
436 if (stat(phy80211_path, &st) == 0 && (st.st_mode & S_IFDIR))
445 struct connman_device *connman_inet_create_device(int index)
447 enum connman_device_mode mode = CONNMAN_DEVICE_MODE_UNKNOWN;
448 enum connman_device_type type;
449 struct connman_device *device;
450 char *devname, *ident = NULL;
451 char *addr = NULL, *name = NULL, *node = NULL;
456 devname = connman_inet_ifname(index);
460 if (__connman_element_device_isfiltered(devname) == TRUE) {
461 connman_info("Ignoring interface %s (filtered)", devname);
465 type = __connman_rtnl_get_device_type(index);
468 case CONNMAN_DEVICE_TYPE_UNKNOWN:
469 connman_info("Ignoring interface %s (type unknown)", devname);
472 case CONNMAN_DEVICE_TYPE_ETHERNET:
473 case CONNMAN_DEVICE_TYPE_WIFI:
474 case CONNMAN_DEVICE_TYPE_WIMAX:
475 name = index2ident(index, "");
476 addr = index2addr(index);
478 case CONNMAN_DEVICE_TYPE_BLUETOOTH:
479 case CONNMAN_DEVICE_TYPE_CELLULAR:
480 case CONNMAN_DEVICE_TYPE_GPS:
481 case CONNMAN_DEVICE_TYPE_VENDOR:
482 name = strdup(devname);
486 device = connman_device_create(name, type);
491 case CONNMAN_DEVICE_TYPE_UNKNOWN:
492 case CONNMAN_DEVICE_TYPE_VENDOR:
493 case CONNMAN_DEVICE_TYPE_GPS:
494 mode = CONNMAN_DEVICE_MODE_UNKNOWN;
496 case CONNMAN_DEVICE_TYPE_ETHERNET:
497 mode = CONNMAN_DEVICE_MODE_NETWORK_SINGLE;
498 ident = index2ident(index, NULL);
500 case CONNMAN_DEVICE_TYPE_WIFI:
501 case CONNMAN_DEVICE_TYPE_WIMAX:
502 mode = CONNMAN_DEVICE_MODE_NETWORK_SINGLE;
503 ident = index2ident(index, NULL);
505 case CONNMAN_DEVICE_TYPE_BLUETOOTH:
506 mode = CONNMAN_DEVICE_MODE_NETWORK_MULTIPLE;
508 case CONNMAN_DEVICE_TYPE_CELLULAR:
509 mode = CONNMAN_DEVICE_MODE_NETWORK_SINGLE;
510 ident = index2ident(index, NULL);
514 connman_device_set_mode(device, mode);
516 connman_device_set_index(device, index);
517 connman_device_set_interface(device, devname, node);
520 connman_device_set_ident(device, ident);
524 connman_device_set_string(device, "Address", addr);
536 struct in6_addr ifr6_addr;
537 __u32 ifr6_prefixlen;
538 unsigned int ifr6_ifindex;
541 int connman_inet_set_ipv6_address(int index,
542 struct connman_ipaddress *ipaddress)
544 unsigned char prefix_len;
547 if (ipaddress->local == NULL)
550 prefix_len = ipaddress->prefixlen;
551 address = ipaddress->local;
553 DBG("index %d address %s prefix_len %d", index, address, prefix_len);
555 if ((__connman_inet_modify_address(RTM_NEWADDR,
556 NLM_F_REPLACE | NLM_F_ACK, index, AF_INET6,
557 address, NULL, prefix_len, NULL)) < 0) {
558 connman_error("Set IPv6 address error");
565 int connman_inet_set_address(int index, struct connman_ipaddress *ipaddress)
567 unsigned char prefix_len;
568 const char *address, *broadcast, *peer;
570 if (ipaddress->local == NULL)
573 prefix_len = ipaddress->prefixlen;
574 address = ipaddress->local;
575 broadcast = ipaddress->broadcast;
576 peer = ipaddress->peer;
578 DBG("index %d address %s prefix_len %d", index, address, prefix_len);
580 if ((__connman_inet_modify_address(RTM_NEWADDR,
581 NLM_F_REPLACE | NLM_F_ACK, index, AF_INET,
582 address, peer, prefix_len, broadcast)) < 0) {
583 DBG("address setting failed");
590 int connman_inet_clear_ipv6_address(int index, const char *address,
593 DBG("index %d address %s prefix_len %d", index, address, prefix_len);
595 if ((__connman_inet_modify_address(RTM_DELADDR, 0, index, AF_INET6,
596 address, NULL, prefix_len, NULL)) < 0) {
597 connman_error("Clear IPv6 address error");
604 int connman_inet_clear_address(int index, struct connman_ipaddress *ipaddress)
606 unsigned char prefix_len;
607 const char *address, *broadcast, *peer;
609 prefix_len = ipaddress->prefixlen;
610 address = ipaddress->local;
611 broadcast = ipaddress->broadcast;
612 peer = ipaddress->peer;
614 DBG("index %d address %s prefix_len %d", index, address, prefix_len);
616 if ((__connman_inet_modify_address(RTM_DELADDR, 0, index, AF_INET,
617 address, peer, prefix_len, broadcast)) < 0) {
618 DBG("address removal failed");
625 int connman_inet_add_host_route(int index, const char *host, const char *gateway)
629 struct sockaddr_in addr;
632 sk = socket(PF_INET, SOCK_DGRAM, 0);
636 memset(&ifr, 0, sizeof(ifr));
637 ifr.ifr_ifindex = index;
639 if (ioctl(sk, SIOCGIFNAME, &ifr) < 0) {
644 DBG("ifname %s", ifr.ifr_name);
646 memset(&rt, 0, sizeof(rt));
647 rt.rt_flags = RTF_UP | RTF_HOST;
649 rt.rt_flags |= RTF_GATEWAY;
651 memset(&addr, 0, sizeof(addr));
652 addr.sin_family = AF_INET;
653 addr.sin_addr.s_addr = inet_addr(host);
654 memcpy(&rt.rt_dst, &addr, sizeof(rt.rt_dst));
656 memset(&addr, 0, sizeof(addr));
657 addr.sin_family = AF_INET;
659 addr.sin_addr.s_addr = inet_addr(gateway);
661 addr.sin_addr.s_addr = INADDR_ANY;
662 memcpy(&rt.rt_gateway, &addr, sizeof(rt.rt_gateway));
664 memset(&addr, 0, sizeof(addr));
665 addr.sin_family = AF_INET;
666 addr.sin_addr.s_addr = INADDR_ANY;
667 memcpy(&rt.rt_genmask, &addr, sizeof(rt.rt_genmask));
669 rt.rt_dev = ifr.ifr_name;
671 err = ioctl(sk, SIOCADDRT, &rt);
673 connman_error("Adding host route failed (%s)",
681 int connman_inet_del_host_route(int index, const char *host)
685 struct sockaddr_in addr;
688 sk = socket(PF_INET, SOCK_DGRAM, 0);
692 memset(&ifr, 0, sizeof(ifr));
693 ifr.ifr_ifindex = index;
695 if (ioctl(sk, SIOCGIFNAME, &ifr) < 0) {
700 DBG("ifname %s", ifr.ifr_name);
702 memset(&rt, 0, sizeof(rt));
703 rt.rt_flags = RTF_UP | RTF_HOST;
705 memset(&addr, 0, sizeof(addr));
706 addr.sin_family = AF_INET;
707 addr.sin_addr.s_addr = inet_addr(host);
708 memcpy(&rt.rt_dst, &addr, sizeof(rt.rt_dst));
710 rt.rt_dev = ifr.ifr_name;
712 err = ioctl(sk, SIOCDELRT, &rt);
714 connman_error("Deleting host route failed (%s)",
722 int connman_inet_del_ipv6_host_route(int index, const char *host)
727 DBG("index %d host %s", index, host);
732 memset(&rt, 0, sizeof(rt));
734 rt.rtmsg_dst_len = 128;
736 err = inet_pton(AF_INET6, host, &rt.rtmsg_dst);
740 rt.rtmsg_flags = RTF_UP | RTF_HOST;
743 rt.rtmsg_ifindex = index;
745 sk = socket(AF_INET6, SOCK_DGRAM, 0);
751 err = ioctl(sk, SIOCDELRT, &rt);
755 connman_error("Del IPv6 host route error");
760 int connman_inet_add_ipv6_host_route(int index, const char *host,
766 DBG("index %d host %s gateway %s", index, host, gateway);
771 memset(&rt, 0, sizeof(rt));
773 rt.rtmsg_dst_len = 128;
775 err = inet_pton(AF_INET6, host, &rt.rtmsg_dst);
779 rt.rtmsg_flags = RTF_UP | RTF_HOST;
781 if (gateway != NULL) {
782 rt.rtmsg_flags |= RTF_GATEWAY;
783 inet_pton(AF_INET6, gateway, &rt.rtmsg_gateway);
787 rt.rtmsg_ifindex = index;
789 sk = socket(AF_INET6, SOCK_DGRAM, 0);
795 err = ioctl(sk, SIOCADDRT, &rt);
799 connman_error("Set IPv6 host route error");
804 int connman_inet_set_ipv6_gateway_address(int index, const char *gateway)
809 DBG("index %d, gateway %s", index, gateway);
814 memset(&rt, 0, sizeof(rt));
816 err = inet_pton(AF_INET6, gateway, &rt.rtmsg_gateway);
820 rt.rtmsg_flags = RTF_UP | RTF_GATEWAY;
822 rt.rtmsg_dst_len = 0;
823 rt.rtmsg_ifindex = index;
825 sk = socket(AF_INET6, SOCK_DGRAM, 0);
831 err = ioctl(sk, SIOCADDRT, &rt);
835 connman_error("Set default IPv6 gateway error");
840 int connman_inet_clear_ipv6_gateway_address(int index, const char *gateway)
845 DBG("index %d, gateway %s", index, gateway);
850 memset(&rt, 0, sizeof(rt));
852 err = inet_pton(AF_INET6, gateway, &rt.rtmsg_gateway);
856 rt.rtmsg_flags = RTF_UP | RTF_GATEWAY;
858 rt.rtmsg_dst_len = 0;
859 rt.rtmsg_ifindex = index;
861 sk = socket(AF_INET6, SOCK_DGRAM, 0);
867 err = ioctl(sk, SIOCDELRT, &rt);
871 connman_error("Clear default IPv6 gateway error");
876 int connman_inet_set_gateway_address(int index, const char *gateway)
880 struct sockaddr_in addr;
883 sk = socket(PF_INET, SOCK_DGRAM, 0);
887 memset(&ifr, 0, sizeof(ifr));
888 ifr.ifr_ifindex = index;
890 if (ioctl(sk, SIOCGIFNAME, &ifr) < 0) {
895 DBG("ifname %s", ifr.ifr_name);
897 memset(&rt, 0, sizeof(rt));
898 rt.rt_flags = RTF_UP | RTF_GATEWAY;
900 memset(&addr, 0, sizeof(addr));
901 addr.sin_family = AF_INET;
902 addr.sin_addr.s_addr = INADDR_ANY;
903 memcpy(&rt.rt_dst, &addr, sizeof(rt.rt_dst));
905 memset(&addr, 0, sizeof(addr));
906 addr.sin_family = AF_INET;
907 addr.sin_addr.s_addr = inet_addr(gateway);
908 memcpy(&rt.rt_gateway, &addr, sizeof(rt.rt_gateway));
910 memset(&addr, 0, sizeof(addr));
911 addr.sin_family = AF_INET;
912 addr.sin_addr.s_addr = INADDR_ANY;
913 memcpy(&rt.rt_genmask, &addr, sizeof(rt.rt_genmask));
915 err = ioctl(sk, SIOCADDRT, &rt);
917 connman_error("Setting default gateway route failed (%s)",
925 int connman_inet_set_gateway_interface(int index)
929 struct sockaddr_in addr;
934 sk = socket(PF_INET, SOCK_DGRAM, 0);
938 memset(&ifr, 0, sizeof(ifr));
939 ifr.ifr_ifindex = index;
941 if (ioctl(sk, SIOCGIFNAME, &ifr) < 0) {
946 DBG("ifname %s", ifr.ifr_name);
948 memset(&rt, 0, sizeof(rt));
949 rt.rt_flags = RTF_UP;
951 memset(&addr, 0, sizeof(addr));
952 addr.sin_family = AF_INET;
953 addr.sin_addr.s_addr = INADDR_ANY;
955 memcpy(&rt.rt_genmask, &addr, sizeof(rt.rt_genmask));
956 memcpy(&rt.rt_dst, &addr, sizeof(rt.rt_dst));
957 memcpy(&rt.rt_gateway, &addr, sizeof(rt.rt_gateway));
959 rt.rt_dev = ifr.ifr_name;
961 err = ioctl(sk, SIOCADDRT, &rt);
963 connman_error("Setting default interface route failed (%s)",
970 int connman_inet_clear_gateway_address(int index, const char *gateway)
974 struct sockaddr_in addr;
979 sk = socket(PF_INET, SOCK_DGRAM, 0);
983 memset(&ifr, 0, sizeof(ifr));
984 ifr.ifr_ifindex = index;
986 if (ioctl(sk, SIOCGIFNAME, &ifr) < 0) {
991 DBG("ifname %s", ifr.ifr_name);
993 memset(&rt, 0, sizeof(rt));
994 rt.rt_flags = RTF_UP | RTF_GATEWAY;
996 memset(&addr, 0, sizeof(addr));
997 addr.sin_family = AF_INET;
998 addr.sin_addr.s_addr = INADDR_ANY;
999 memcpy(&rt.rt_dst, &addr, sizeof(rt.rt_dst));
1001 memset(&addr, 0, sizeof(addr));
1002 addr.sin_family = AF_INET;
1003 addr.sin_addr.s_addr = inet_addr(gateway);
1004 memcpy(&rt.rt_gateway, &addr, sizeof(rt.rt_gateway));
1006 memset(&addr, 0, sizeof(addr));
1007 addr.sin_family = AF_INET;
1008 addr.sin_addr.s_addr = INADDR_ANY;
1009 memcpy(&rt.rt_genmask, &addr, sizeof(rt.rt_genmask));
1011 err = ioctl(sk, SIOCDELRT, &rt);
1013 connman_error("Removing default gateway route failed (%s)",
1021 int connman_inet_clear_gateway_interface(int index)
1025 struct sockaddr_in addr;
1030 sk = socket(PF_INET, SOCK_DGRAM, 0);
1034 memset(&ifr, 0, sizeof(ifr));
1035 ifr.ifr_ifindex = index;
1037 if (ioctl(sk, SIOCGIFNAME, &ifr) < 0) {
1042 DBG("ifname %s", ifr.ifr_name);
1044 memset(&rt, 0, sizeof(rt));
1045 rt.rt_flags = RTF_UP;
1047 memset(&addr, 0, sizeof(addr));
1048 addr.sin_family = AF_INET;
1049 addr.sin_addr.s_addr = INADDR_ANY;
1051 memcpy(&rt.rt_genmask, &addr, sizeof(rt.rt_genmask));
1052 memcpy(&rt.rt_dst, &addr, sizeof(rt.rt_dst));
1053 memcpy(&rt.rt_gateway, &addr, sizeof(rt.rt_gateway));
1055 rt.rt_dev = ifr.ifr_name;
1057 err = ioctl(sk, SIOCDELRT, &rt);
1059 connman_error("Removing default interface route failed (%s)",
1066 connman_bool_t connman_inet_compare_subnet(int index, const char *host)
1069 struct in_addr _host_addr;
1070 in_addr_t host_addr, netmask_addr, if_addr;
1071 struct sockaddr_in *netmask, *addr;
1074 DBG("host %s", host);
1079 if (inet_aton(host, &_host_addr) == 0)
1081 host_addr = _host_addr.s_addr;
1083 sk = socket(PF_INET, SOCK_DGRAM, 0);
1087 memset(&ifr, 0, sizeof(ifr));
1088 ifr.ifr_ifindex = index;
1090 if (ioctl(sk, SIOCGIFNAME, &ifr) < 0) {
1095 if (ioctl(sk, SIOCGIFNETMASK, &ifr) < 0) {
1100 netmask = (struct sockaddr_in *)&ifr.ifr_netmask;
1101 netmask_addr = netmask->sin_addr.s_addr;
1103 if (ioctl(sk, SIOCGIFADDR, &ifr) < 0) {
1107 addr = (struct sockaddr_in *)&ifr.ifr_addr;
1108 if_addr = addr->sin_addr.s_addr;
1110 return ((if_addr & netmask_addr) == (host_addr & netmask_addr));