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,
69 unsigned char prefixlen,
70 const char *broadcast)
72 uint8_t request[NLMSG_ALIGN(sizeof(struct nlmsghdr)) +
73 NLMSG_ALIGN(sizeof(struct ifaddrmsg)) +
74 RTA_LENGTH(sizeof(struct in6_addr))];
76 struct nlmsghdr *header;
77 struct sockaddr_nl nl_addr;
78 struct ifaddrmsg *ifaddrmsg;
79 struct in6_addr ipv6_addr;
80 struct in_addr ipv4_addr, ipv4_bcast;
88 if (family != AF_INET && family != AF_INET6)
91 memset(&request, 0, sizeof(request));
93 header = (struct nlmsghdr *)request;
94 header->nlmsg_len = NLMSG_LENGTH(sizeof(struct ifaddrmsg));
95 header->nlmsg_type = cmd;
96 header->nlmsg_flags = NLM_F_REQUEST | flags;
97 header->nlmsg_seq = 1;
99 ifaddrmsg = NLMSG_DATA(header);
100 ifaddrmsg->ifa_family = family;
101 ifaddrmsg->ifa_prefixlen = prefixlen;
102 ifaddrmsg->ifa_flags = IFA_F_PERMANENT;
103 ifaddrmsg->ifa_scope = RT_SCOPE_UNIVERSE;
104 ifaddrmsg->ifa_index = index;
106 if (family == AF_INET) {
107 if (inet_pton(AF_INET, address, &ipv4_addr) < 1)
110 if (broadcast != NULL)
111 inet_pton(AF_INET, broadcast, &ipv4_bcast);
113 ipv4_bcast.s_addr = ipv4_addr.s_addr |
114 htonl(0xfffffffflu >> prefixlen);
116 if ((err = add_rtattr(header, sizeof(request), IFA_LOCAL,
117 &ipv4_addr, sizeof(ipv4_addr))) < 0)
120 if ((err = add_rtattr(header, sizeof(request), IFA_BROADCAST,
121 &ipv4_bcast, sizeof(ipv4_bcast))) < 0)
124 } else if (family == AF_INET6) {
125 if (inet_pton(AF_INET6, address, &ipv6_addr) < 1)
128 if ((err = add_rtattr(header, sizeof(request), IFA_LOCAL,
129 &ipv6_addr, sizeof(ipv6_addr))) < 0)
133 sk = socket(AF_NETLINK, SOCK_DGRAM, NETLINK_ROUTE);
137 memset(&nl_addr, 0, sizeof(nl_addr));
138 nl_addr.nl_family = AF_NETLINK;
140 if ((err = sendto(sk, request, header->nlmsg_len, 0,
141 (struct sockaddr *) &nl_addr, sizeof(nl_addr))) < 0)
152 int connman_inet_ifindex(const char *name)
160 sk = socket(PF_INET, SOCK_DGRAM, 0);
164 memset(&ifr, 0, sizeof(ifr));
165 strncpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
167 err = ioctl(sk, SIOCGIFINDEX, &ifr);
174 return ifr.ifr_ifindex;
177 char *connman_inet_ifname(int index)
185 sk = socket(PF_INET, SOCK_DGRAM, 0);
189 memset(&ifr, 0, sizeof(ifr));
190 ifr.ifr_ifindex = index;
192 err = ioctl(sk, SIOCGIFNAME, &ifr);
199 return strdup(ifr.ifr_name);
202 short int connman_inet_ifflags(int index)
207 sk = socket(PF_INET, SOCK_DGRAM, 0);
211 memset(&ifr, 0, sizeof(ifr));
212 ifr.ifr_ifindex = index;
214 if (ioctl(sk, SIOCGIFNAME, &ifr) < 0) {
219 if (ioctl(sk, SIOCGIFFLAGS, &ifr) < 0) {
232 int connman_inet_ifup(int index)
237 sk = socket(PF_INET, SOCK_DGRAM, 0);
241 memset(&ifr, 0, sizeof(ifr));
242 ifr.ifr_ifindex = index;
244 if (ioctl(sk, SIOCGIFNAME, &ifr) < 0) {
249 if (ioctl(sk, SIOCGIFFLAGS, &ifr) < 0) {
254 if (ifr.ifr_flags & IFF_UP) {
259 ifr.ifr_flags |= IFF_UP;
261 if (ioctl(sk, SIOCSIFFLAGS, &ifr) < 0) {
274 int connman_inet_ifdown(int index)
279 sk = socket(PF_INET, SOCK_DGRAM, 0);
283 memset(&ifr, 0, sizeof(ifr));
284 ifr.ifr_ifindex = index;
286 if (ioctl(sk, SIOCGIFNAME, &ifr) < 0) {
291 if (ioctl(sk, SIOCGIFFLAGS, &ifr) < 0) {
296 if (!(ifr.ifr_flags & IFF_UP)) {
301 ifr.ifr_flags &= ~IFF_UP;
303 if (ioctl(sk, SIOCSIFFLAGS, &ifr) < 0)
314 static char *index2addr(int index)
317 struct ether_addr eth;
324 sk = socket(PF_INET, SOCK_DGRAM, 0);
328 memset(&ifr, 0, sizeof(ifr));
329 ifr.ifr_ifindex = index;
331 err = ioctl(sk, SIOCGIFNAME, &ifr);
334 err = ioctl(sk, SIOCGIFHWADDR, &ifr);
345 memcpy(ð, &ifr.ifr_hwaddr.sa_data, sizeof(eth));
346 snprintf(str, 18, "%02X:%02X:%02X:%02X:%02X:%02X",
347 eth.ether_addr_octet[0],
348 eth.ether_addr_octet[1],
349 eth.ether_addr_octet[2],
350 eth.ether_addr_octet[3],
351 eth.ether_addr_octet[4],
352 eth.ether_addr_octet[5]);
357 static char *index2ident(int index, const char *prefix)
360 struct ether_addr eth;
367 sk = socket(PF_INET, SOCK_DGRAM, 0);
371 memset(&ifr, 0, sizeof(ifr));
372 ifr.ifr_ifindex = index;
374 err = ioctl(sk, SIOCGIFNAME, &ifr);
377 err = ioctl(sk, SIOCGIFHWADDR, &ifr);
384 len = prefix ? strlen(prefix) + 18 : 18;
390 memcpy(ð, &ifr.ifr_hwaddr.sa_data, sizeof(eth));
391 snprintf(str, len, "%s%02x%02x%02x%02x%02x%02x",
392 prefix ? prefix : "",
393 eth.ether_addr_octet[0],
394 eth.ether_addr_octet[1],
395 eth.ether_addr_octet[2],
396 eth.ether_addr_octet[3],
397 eth.ether_addr_octet[4],
398 eth.ether_addr_octet[5]);
403 connman_bool_t connman_inet_is_cfg80211(int index)
405 connman_bool_t result = FALSE;
406 char phy80211_path[PATH_MAX];
411 sk = socket(PF_INET, SOCK_DGRAM, 0);
415 memset(&ifr, 0, sizeof(ifr));
416 ifr.ifr_ifindex = index;
418 if (ioctl(sk, SIOCGIFNAME, &ifr) < 0)
421 snprintf(phy80211_path, PATH_MAX,
422 "/sys/class/net/%s/phy80211", ifr.ifr_name);
424 if (stat(phy80211_path, &st) == 0 && (st.st_mode & S_IFDIR))
433 struct connman_device *connman_inet_create_device(int index)
435 enum connman_device_mode mode = CONNMAN_DEVICE_MODE_UNKNOWN;
436 enum connman_device_type type;
437 struct connman_device *device;
438 char *devname, *ident = NULL;
439 char *addr = NULL, *name = NULL, *node = NULL;
444 devname = connman_inet_ifname(index);
448 if (__connman_element_device_isfiltered(devname) == TRUE) {
449 connman_info("Ignoring interface %s (filtered)", devname);
453 type = __connman_rtnl_get_device_type(index);
456 case CONNMAN_DEVICE_TYPE_UNKNOWN:
457 connman_info("Ignoring interface %s (type unknown)", devname);
460 case CONNMAN_DEVICE_TYPE_ETHERNET:
461 case CONNMAN_DEVICE_TYPE_WIFI:
462 case CONNMAN_DEVICE_TYPE_WIMAX:
463 name = index2ident(index, "");
464 addr = index2addr(index);
466 case CONNMAN_DEVICE_TYPE_BLUETOOTH:
467 case CONNMAN_DEVICE_TYPE_CELLULAR:
468 case CONNMAN_DEVICE_TYPE_GPS:
469 case CONNMAN_DEVICE_TYPE_VENDOR:
470 name = strdup(devname);
474 device = connman_device_create(name, type);
479 case CONNMAN_DEVICE_TYPE_UNKNOWN:
480 case CONNMAN_DEVICE_TYPE_VENDOR:
481 case CONNMAN_DEVICE_TYPE_GPS:
482 mode = CONNMAN_DEVICE_MODE_UNKNOWN;
484 case CONNMAN_DEVICE_TYPE_ETHERNET:
485 mode = CONNMAN_DEVICE_MODE_NETWORK_SINGLE;
486 ident = index2ident(index, NULL);
488 case CONNMAN_DEVICE_TYPE_WIFI:
489 case CONNMAN_DEVICE_TYPE_WIMAX:
490 mode = CONNMAN_DEVICE_MODE_NETWORK_SINGLE;
491 ident = index2ident(index, NULL);
493 case CONNMAN_DEVICE_TYPE_BLUETOOTH:
494 mode = CONNMAN_DEVICE_MODE_NETWORK_MULTIPLE;
496 case CONNMAN_DEVICE_TYPE_CELLULAR:
497 mode = CONNMAN_DEVICE_MODE_NETWORK_SINGLE;
498 ident = index2ident(index, NULL);
502 connman_device_set_mode(device, mode);
504 connman_device_set_index(device, index);
505 connman_device_set_interface(device, devname, node);
508 connman_device_set_ident(device, ident);
512 connman_device_set_string(device, "Address", addr);
524 struct in6_addr ifr6_addr;
525 __u32 ifr6_prefixlen;
526 unsigned int ifr6_ifindex;
529 int connman_inet_set_ipv6_address(int index,
530 struct connman_ipaddress *ipaddress)
532 unsigned char prefix_len;
535 if (ipaddress->local == NULL)
538 prefix_len = ipaddress->prefixlen;
539 address = ipaddress->local;
541 DBG("index %d address %s prefix_len %d", index, address, prefix_len);
543 if ((__connman_inet_modify_address(RTM_NEWADDR,
544 NLM_F_REPLACE | NLM_F_ACK, index, AF_INET6,
545 address, prefix_len, NULL)) < 0) {
546 connman_error("Set IPv6 address error");
553 int connman_inet_set_address(int index, struct connman_ipaddress *ipaddress)
555 unsigned char prefix_len;
556 const char *address, *broadcast;
558 if (ipaddress->local == NULL)
561 prefix_len = ipaddress->prefixlen;
562 address = ipaddress->local;
563 broadcast = ipaddress->broadcast;
565 DBG("index %d address %s prefix_len %d", index, address, prefix_len);
567 if ((__connman_inet_modify_address(RTM_NEWADDR,
568 NLM_F_REPLACE | NLM_F_ACK, index, AF_INET,
569 address, prefix_len, broadcast)) < 0) {
570 DBG("address setting failed");
577 int connman_inet_clear_ipv6_address(int index, const char *address,
580 DBG("index %d address %s prefix_len %d", index, address, prefix_len);
582 if ((__connman_inet_modify_address(RTM_DELADDR, 0, index, AF_INET6,
583 address, prefix_len, NULL)) < 0) {
584 connman_error("Clear IPv6 address error");
591 int connman_inet_clear_address(int index, struct connman_ipaddress *ipaddress)
593 unsigned char prefix_len;
594 const char *address, *broadcast;
596 prefix_len = ipaddress->prefixlen;
597 address = ipaddress->local;
598 broadcast = ipaddress->broadcast;
600 DBG("index %d address %s prefix_len %d", index, address, prefix_len);
602 if ((__connman_inet_modify_address(RTM_DELADDR, 0, index, AF_INET,
603 address, prefix_len, broadcast)) < 0) {
604 DBG("address removal failed");
611 int connman_inet_add_host_route(int index, const char *host, const char *gateway)
615 struct sockaddr_in addr;
618 sk = socket(PF_INET, SOCK_DGRAM, 0);
622 memset(&ifr, 0, sizeof(ifr));
623 ifr.ifr_ifindex = index;
625 if (ioctl(sk, SIOCGIFNAME, &ifr) < 0) {
630 DBG("ifname %s", ifr.ifr_name);
632 memset(&rt, 0, sizeof(rt));
633 rt.rt_flags = RTF_UP | RTF_HOST;
635 rt.rt_flags |= RTF_GATEWAY;
637 memset(&addr, 0, sizeof(addr));
638 addr.sin_family = AF_INET;
639 addr.sin_addr.s_addr = inet_addr(host);
640 memcpy(&rt.rt_dst, &addr, sizeof(rt.rt_dst));
642 memset(&addr, 0, sizeof(addr));
643 addr.sin_family = AF_INET;
645 addr.sin_addr.s_addr = inet_addr(gateway);
647 addr.sin_addr.s_addr = INADDR_ANY;
648 memcpy(&rt.rt_gateway, &addr, sizeof(rt.rt_gateway));
650 memset(&addr, 0, sizeof(addr));
651 addr.sin_family = AF_INET;
652 addr.sin_addr.s_addr = INADDR_ANY;
653 memcpy(&rt.rt_genmask, &addr, sizeof(rt.rt_genmask));
655 rt.rt_dev = ifr.ifr_name;
657 err = ioctl(sk, SIOCADDRT, &rt);
659 connman_error("Adding host route failed (%s)",
667 int connman_inet_del_host_route(int index, const char *host)
671 struct sockaddr_in addr;
674 sk = socket(PF_INET, SOCK_DGRAM, 0);
678 memset(&ifr, 0, sizeof(ifr));
679 ifr.ifr_ifindex = index;
681 if (ioctl(sk, SIOCGIFNAME, &ifr) < 0) {
686 DBG("ifname %s", ifr.ifr_name);
688 memset(&rt, 0, sizeof(rt));
689 rt.rt_flags = RTF_UP | RTF_HOST;
691 memset(&addr, 0, sizeof(addr));
692 addr.sin_family = AF_INET;
693 addr.sin_addr.s_addr = inet_addr(host);
694 memcpy(&rt.rt_dst, &addr, sizeof(rt.rt_dst));
696 rt.rt_dev = ifr.ifr_name;
698 err = ioctl(sk, SIOCDELRT, &rt);
700 connman_error("Deleting host route failed (%s)",
708 int connman_inet_del_ipv6_host_route(int index, const char *host)
713 DBG("index %d host %s", index, host);
718 memset(&rt, 0, sizeof(rt));
720 rt.rtmsg_dst_len = 128;
722 err = inet_pton(AF_INET6, host, &rt.rtmsg_dst);
726 rt.rtmsg_flags = RTF_UP | RTF_HOST;
729 rt.rtmsg_ifindex = index;
731 sk = socket(AF_INET6, SOCK_DGRAM, 0);
737 err = ioctl(sk, SIOCDELRT, &rt);
741 connman_error("Del IPv6 host route error");
746 int connman_inet_add_ipv6_host_route(int index, const char *host,
752 DBG("index %d host %s gateway %s", index, host, gateway);
757 memset(&rt, 0, sizeof(rt));
759 rt.rtmsg_dst_len = 128;
761 err = inet_pton(AF_INET6, host, &rt.rtmsg_dst);
765 rt.rtmsg_flags = RTF_UP | RTF_HOST;
767 if (gateway != NULL) {
768 rt.rtmsg_flags |= RTF_GATEWAY;
769 inet_pton(AF_INET6, gateway, &rt.rtmsg_gateway);
773 rt.rtmsg_ifindex = index;
775 sk = socket(AF_INET6, SOCK_DGRAM, 0);
781 err = ioctl(sk, SIOCADDRT, &rt);
785 connman_error("Set IPv6 host route error");
790 int connman_inet_set_ipv6_gateway_address(int index, const char *gateway)
795 DBG("index %d, gateway %s", index, gateway);
800 memset(&rt, 0, sizeof(rt));
802 err = inet_pton(AF_INET6, gateway, &rt.rtmsg_gateway);
806 rt.rtmsg_flags = RTF_UP | RTF_GATEWAY;
808 rt.rtmsg_dst_len = 0;
809 rt.rtmsg_ifindex = index;
811 sk = socket(AF_INET6, SOCK_DGRAM, 0);
817 err = ioctl(sk, SIOCADDRT, &rt);
821 connman_error("Set default IPv6 gateway error");
826 int connman_inet_clear_ipv6_gateway_address(int index, const char *gateway)
831 DBG("index %d, gateway %s", index, gateway);
836 memset(&rt, 0, sizeof(rt));
838 err = inet_pton(AF_INET6, gateway, &rt.rtmsg_gateway);
842 rt.rtmsg_flags = RTF_UP | RTF_GATEWAY;
844 rt.rtmsg_dst_len = 0;
845 rt.rtmsg_ifindex = index;
847 sk = socket(AF_INET6, SOCK_DGRAM, 0);
853 err = ioctl(sk, SIOCDELRT, &rt);
857 connman_error("Clear default IPv6 gateway error");
862 int connman_inet_set_gateway_address(int index, const char *gateway)
866 struct sockaddr_in addr;
869 sk = socket(PF_INET, SOCK_DGRAM, 0);
873 memset(&ifr, 0, sizeof(ifr));
874 ifr.ifr_ifindex = index;
876 if (ioctl(sk, SIOCGIFNAME, &ifr) < 0) {
881 DBG("ifname %s", ifr.ifr_name);
883 memset(&rt, 0, sizeof(rt));
884 rt.rt_flags = RTF_UP | RTF_GATEWAY;
886 memset(&addr, 0, sizeof(addr));
887 addr.sin_family = AF_INET;
888 addr.sin_addr.s_addr = INADDR_ANY;
889 memcpy(&rt.rt_dst, &addr, sizeof(rt.rt_dst));
891 memset(&addr, 0, sizeof(addr));
892 addr.sin_family = AF_INET;
893 addr.sin_addr.s_addr = inet_addr(gateway);
894 memcpy(&rt.rt_gateway, &addr, sizeof(rt.rt_gateway));
896 memset(&addr, 0, sizeof(addr));
897 addr.sin_family = AF_INET;
898 addr.sin_addr.s_addr = INADDR_ANY;
899 memcpy(&rt.rt_genmask, &addr, sizeof(rt.rt_genmask));
901 err = ioctl(sk, SIOCADDRT, &rt);
903 connman_error("Setting default gateway route failed (%s)",
911 int connman_inet_set_gateway_interface(int index)
915 struct sockaddr_in addr;
920 sk = socket(PF_INET, SOCK_DGRAM, 0);
924 memset(&ifr, 0, sizeof(ifr));
925 ifr.ifr_ifindex = index;
927 if (ioctl(sk, SIOCGIFNAME, &ifr) < 0) {
932 DBG("ifname %s", ifr.ifr_name);
934 memset(&rt, 0, sizeof(rt));
935 rt.rt_flags = RTF_UP;
937 memset(&addr, 0, sizeof(addr));
938 addr.sin_family = AF_INET;
939 addr.sin_addr.s_addr = INADDR_ANY;
941 memcpy(&rt.rt_genmask, &addr, sizeof(rt.rt_genmask));
942 memcpy(&rt.rt_dst, &addr, sizeof(rt.rt_dst));
943 memcpy(&rt.rt_gateway, &addr, sizeof(rt.rt_gateway));
945 rt.rt_dev = ifr.ifr_name;
947 err = ioctl(sk, SIOCADDRT, &rt);
949 connman_error("Setting default interface route failed (%s)",
956 int connman_inet_clear_gateway_address(int index, const char *gateway)
960 struct sockaddr_in addr;
965 sk = socket(PF_INET, SOCK_DGRAM, 0);
969 memset(&ifr, 0, sizeof(ifr));
970 ifr.ifr_ifindex = index;
972 if (ioctl(sk, SIOCGIFNAME, &ifr) < 0) {
977 DBG("ifname %s", ifr.ifr_name);
979 memset(&rt, 0, sizeof(rt));
980 rt.rt_flags = RTF_UP | RTF_GATEWAY;
982 memset(&addr, 0, sizeof(addr));
983 addr.sin_family = AF_INET;
984 addr.sin_addr.s_addr = INADDR_ANY;
985 memcpy(&rt.rt_dst, &addr, sizeof(rt.rt_dst));
987 memset(&addr, 0, sizeof(addr));
988 addr.sin_family = AF_INET;
989 addr.sin_addr.s_addr = inet_addr(gateway);
990 memcpy(&rt.rt_gateway, &addr, sizeof(rt.rt_gateway));
992 memset(&addr, 0, sizeof(addr));
993 addr.sin_family = AF_INET;
994 addr.sin_addr.s_addr = INADDR_ANY;
995 memcpy(&rt.rt_genmask, &addr, sizeof(rt.rt_genmask));
997 err = ioctl(sk, SIOCDELRT, &rt);
999 connman_error("Removing default gateway route failed (%s)",
1007 int connman_inet_clear_gateway_interface(int index)
1011 struct sockaddr_in addr;
1016 sk = socket(PF_INET, SOCK_DGRAM, 0);
1020 memset(&ifr, 0, sizeof(ifr));
1021 ifr.ifr_ifindex = index;
1023 if (ioctl(sk, SIOCGIFNAME, &ifr) < 0) {
1028 DBG("ifname %s", ifr.ifr_name);
1030 memset(&rt, 0, sizeof(rt));
1031 rt.rt_flags = RTF_UP;
1033 memset(&addr, 0, sizeof(addr));
1034 addr.sin_family = AF_INET;
1035 addr.sin_addr.s_addr = INADDR_ANY;
1037 memcpy(&rt.rt_genmask, &addr, sizeof(rt.rt_genmask));
1038 memcpy(&rt.rt_dst, &addr, sizeof(rt.rt_dst));
1039 memcpy(&rt.rt_gateway, &addr, sizeof(rt.rt_gateway));
1041 rt.rt_dev = ifr.ifr_name;
1043 err = ioctl(sk, SIOCDELRT, &rt);
1045 connman_error("Removing default interface route failed (%s)",
1052 connman_bool_t connman_inet_compare_subnet(int index, const char *host)
1055 struct in_addr _host_addr;
1056 in_addr_t host_addr, netmask_addr, if_addr;
1057 struct sockaddr_in *netmask, *addr;
1060 DBG("host %s", host);
1065 if (inet_aton(host, &_host_addr) == 0)
1067 host_addr = _host_addr.s_addr;
1069 sk = socket(PF_INET, SOCK_DGRAM, 0);
1073 memset(&ifr, 0, sizeof(ifr));
1074 ifr.ifr_ifindex = index;
1076 if (ioctl(sk, SIOCGIFNAME, &ifr) < 0) {
1081 if (ioctl(sk, SIOCGIFNETMASK, &ifr) < 0) {
1086 netmask = (struct sockaddr_in *)&ifr.ifr_netmask;
1087 netmask_addr = netmask->sin_addr.s_addr;
1089 if (ioctl(sk, SIOCGIFADDR, &ifr) < 0) {
1093 addr = (struct sockaddr_in *)&ifr.ifr_addr;
1094 if_addr = addr->sin_addr.s_addr;
1096 return ((if_addr & netmask_addr) == (host_addr & netmask_addr));