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_type type;
448 struct connman_device *device;
449 char *devname, *ident = NULL;
450 char *addr = NULL, *name = NULL;
455 devname = connman_inet_ifname(index);
459 if (__connman_element_device_isfiltered(devname) == TRUE) {
460 connman_info("Ignoring interface %s (filtered)", devname);
464 type = __connman_rtnl_get_device_type(index);
467 case CONNMAN_DEVICE_TYPE_UNKNOWN:
468 connman_info("Ignoring interface %s (type unknown)", devname);
471 case CONNMAN_DEVICE_TYPE_ETHERNET:
472 case CONNMAN_DEVICE_TYPE_WIFI:
473 case CONNMAN_DEVICE_TYPE_WIMAX:
474 name = index2ident(index, "");
475 addr = index2addr(index);
477 case CONNMAN_DEVICE_TYPE_BLUETOOTH:
478 case CONNMAN_DEVICE_TYPE_CELLULAR:
479 case CONNMAN_DEVICE_TYPE_GPS:
480 case CONNMAN_DEVICE_TYPE_VENDOR:
481 name = strdup(devname);
485 device = connman_device_create(name, type);
490 case CONNMAN_DEVICE_TYPE_UNKNOWN:
491 case CONNMAN_DEVICE_TYPE_VENDOR:
492 case CONNMAN_DEVICE_TYPE_GPS:
494 case CONNMAN_DEVICE_TYPE_ETHERNET:
495 ident = index2ident(index, NULL);
497 case CONNMAN_DEVICE_TYPE_WIFI:
498 case CONNMAN_DEVICE_TYPE_WIMAX:
499 ident = index2ident(index, NULL);
501 case CONNMAN_DEVICE_TYPE_BLUETOOTH:
503 case CONNMAN_DEVICE_TYPE_CELLULAR:
504 ident = index2ident(index, NULL);
508 connman_device_set_index(device, index);
509 connman_device_set_interface(device, devname);
512 connman_device_set_ident(device, ident);
516 connman_device_set_string(device, "Address", addr);
527 struct in6_addr ifr6_addr;
528 __u32 ifr6_prefixlen;
529 unsigned int ifr6_ifindex;
532 int connman_inet_set_ipv6_address(int index,
533 struct connman_ipaddress *ipaddress)
535 unsigned char prefix_len;
538 if (ipaddress->local == NULL)
541 prefix_len = ipaddress->prefixlen;
542 address = ipaddress->local;
544 DBG("index %d address %s prefix_len %d", index, address, prefix_len);
546 if ((__connman_inet_modify_address(RTM_NEWADDR,
547 NLM_F_REPLACE | NLM_F_ACK, index, AF_INET6,
548 address, NULL, prefix_len, NULL)) < 0) {
549 connman_error("Set IPv6 address error");
556 int connman_inet_set_address(int index, struct connman_ipaddress *ipaddress)
558 unsigned char prefix_len;
559 const char *address, *broadcast, *peer;
561 if (ipaddress->local == NULL)
564 prefix_len = ipaddress->prefixlen;
565 address = ipaddress->local;
566 broadcast = ipaddress->broadcast;
567 peer = ipaddress->peer;
569 DBG("index %d address %s prefix_len %d", index, address, prefix_len);
571 if ((__connman_inet_modify_address(RTM_NEWADDR,
572 NLM_F_REPLACE | NLM_F_ACK, index, AF_INET,
573 address, peer, prefix_len, broadcast)) < 0) {
574 DBG("address setting failed");
581 int connman_inet_clear_ipv6_address(int index, const char *address,
584 DBG("index %d address %s prefix_len %d", index, address, prefix_len);
586 if ((__connman_inet_modify_address(RTM_DELADDR, 0, index, AF_INET6,
587 address, NULL, prefix_len, NULL)) < 0) {
588 connman_error("Clear IPv6 address error");
595 int connman_inet_clear_address(int index, struct connman_ipaddress *ipaddress)
597 unsigned char prefix_len;
598 const char *address, *broadcast, *peer;
600 prefix_len = ipaddress->prefixlen;
601 address = ipaddress->local;
602 broadcast = ipaddress->broadcast;
603 peer = ipaddress->peer;
605 DBG("index %d address %s prefix_len %d", index, address, prefix_len);
607 if ((__connman_inet_modify_address(RTM_DELADDR, 0, index, AF_INET,
608 address, peer, prefix_len, broadcast)) < 0) {
609 DBG("address removal failed");
616 int connman_inet_add_host_route(int index, const char *host, const char *gateway)
620 struct sockaddr_in addr;
623 sk = socket(PF_INET, SOCK_DGRAM, 0);
627 memset(&ifr, 0, sizeof(ifr));
628 ifr.ifr_ifindex = index;
630 if (ioctl(sk, SIOCGIFNAME, &ifr) < 0) {
635 DBG("ifname %s", ifr.ifr_name);
637 memset(&rt, 0, sizeof(rt));
638 rt.rt_flags = RTF_UP | RTF_HOST;
640 rt.rt_flags |= RTF_GATEWAY;
642 memset(&addr, 0, sizeof(addr));
643 addr.sin_family = AF_INET;
644 addr.sin_addr.s_addr = inet_addr(host);
645 memcpy(&rt.rt_dst, &addr, sizeof(rt.rt_dst));
647 memset(&addr, 0, sizeof(addr));
648 addr.sin_family = AF_INET;
650 addr.sin_addr.s_addr = inet_addr(gateway);
652 addr.sin_addr.s_addr = INADDR_ANY;
653 memcpy(&rt.rt_gateway, &addr, sizeof(rt.rt_gateway));
655 memset(&addr, 0, sizeof(addr));
656 addr.sin_family = AF_INET;
657 addr.sin_addr.s_addr = INADDR_ANY;
658 memcpy(&rt.rt_genmask, &addr, sizeof(rt.rt_genmask));
660 rt.rt_dev = ifr.ifr_name;
662 err = ioctl(sk, SIOCADDRT, &rt);
664 connman_error("Adding host route failed (%s)",
672 int connman_inet_del_host_route(int index, const char *host)
676 struct sockaddr_in addr;
679 sk = socket(PF_INET, SOCK_DGRAM, 0);
683 memset(&ifr, 0, sizeof(ifr));
684 ifr.ifr_ifindex = index;
686 if (ioctl(sk, SIOCGIFNAME, &ifr) < 0) {
691 DBG("ifname %s", ifr.ifr_name);
693 memset(&rt, 0, sizeof(rt));
694 rt.rt_flags = RTF_UP | RTF_HOST;
696 memset(&addr, 0, sizeof(addr));
697 addr.sin_family = AF_INET;
698 addr.sin_addr.s_addr = inet_addr(host);
699 memcpy(&rt.rt_dst, &addr, sizeof(rt.rt_dst));
701 rt.rt_dev = ifr.ifr_name;
703 err = ioctl(sk, SIOCDELRT, &rt);
705 connman_error("Deleting host route failed (%s)",
713 int connman_inet_del_ipv6_host_route(int index, const char *host)
718 DBG("index %d host %s", index, host);
723 memset(&rt, 0, sizeof(rt));
725 rt.rtmsg_dst_len = 128;
727 err = inet_pton(AF_INET6, host, &rt.rtmsg_dst);
731 rt.rtmsg_flags = RTF_UP | RTF_HOST;
734 rt.rtmsg_ifindex = index;
736 sk = socket(AF_INET6, SOCK_DGRAM, 0);
742 err = ioctl(sk, SIOCDELRT, &rt);
746 connman_error("Del IPv6 host route error");
751 int connman_inet_add_ipv6_host_route(int index, const char *host,
757 DBG("index %d host %s gateway %s", index, host, gateway);
762 memset(&rt, 0, sizeof(rt));
764 rt.rtmsg_dst_len = 128;
766 err = inet_pton(AF_INET6, host, &rt.rtmsg_dst);
770 rt.rtmsg_flags = RTF_UP | RTF_HOST;
772 if (gateway != NULL) {
773 rt.rtmsg_flags |= RTF_GATEWAY;
774 inet_pton(AF_INET6, gateway, &rt.rtmsg_gateway);
778 rt.rtmsg_ifindex = index;
780 sk = socket(AF_INET6, SOCK_DGRAM, 0);
786 err = ioctl(sk, SIOCADDRT, &rt);
790 connman_error("Set IPv6 host route error");
795 int connman_inet_set_ipv6_gateway_address(int index, const char *gateway)
800 DBG("index %d, gateway %s", index, gateway);
805 memset(&rt, 0, sizeof(rt));
807 err = inet_pton(AF_INET6, gateway, &rt.rtmsg_gateway);
811 rt.rtmsg_flags = RTF_UP | RTF_GATEWAY;
813 rt.rtmsg_dst_len = 0;
814 rt.rtmsg_ifindex = index;
816 sk = socket(AF_INET6, SOCK_DGRAM, 0);
822 err = ioctl(sk, SIOCADDRT, &rt);
826 connman_error("Set default IPv6 gateway error");
831 int connman_inet_clear_ipv6_gateway_address(int index, const char *gateway)
836 DBG("index %d, gateway %s", index, gateway);
841 memset(&rt, 0, sizeof(rt));
843 err = inet_pton(AF_INET6, gateway, &rt.rtmsg_gateway);
847 rt.rtmsg_flags = RTF_UP | RTF_GATEWAY;
849 rt.rtmsg_dst_len = 0;
850 rt.rtmsg_ifindex = index;
852 sk = socket(AF_INET6, SOCK_DGRAM, 0);
858 err = ioctl(sk, SIOCDELRT, &rt);
862 connman_error("Clear default IPv6 gateway error");
867 int connman_inet_set_gateway_address(int index, const char *gateway)
871 struct sockaddr_in addr;
874 sk = socket(PF_INET, SOCK_DGRAM, 0);
878 memset(&ifr, 0, sizeof(ifr));
879 ifr.ifr_ifindex = index;
881 if (ioctl(sk, SIOCGIFNAME, &ifr) < 0) {
886 DBG("ifname %s", ifr.ifr_name);
888 memset(&rt, 0, sizeof(rt));
889 rt.rt_flags = RTF_UP | RTF_GATEWAY;
891 memset(&addr, 0, sizeof(addr));
892 addr.sin_family = AF_INET;
893 addr.sin_addr.s_addr = INADDR_ANY;
894 memcpy(&rt.rt_dst, &addr, sizeof(rt.rt_dst));
896 memset(&addr, 0, sizeof(addr));
897 addr.sin_family = AF_INET;
898 addr.sin_addr.s_addr = inet_addr(gateway);
899 memcpy(&rt.rt_gateway, &addr, sizeof(rt.rt_gateway));
901 memset(&addr, 0, sizeof(addr));
902 addr.sin_family = AF_INET;
903 addr.sin_addr.s_addr = INADDR_ANY;
904 memcpy(&rt.rt_genmask, &addr, sizeof(rt.rt_genmask));
906 err = ioctl(sk, SIOCADDRT, &rt);
908 connman_error("Setting default gateway route failed (%s)",
916 int connman_inet_set_gateway_interface(int index)
920 struct sockaddr_in addr;
925 sk = socket(PF_INET, SOCK_DGRAM, 0);
929 memset(&ifr, 0, sizeof(ifr));
930 ifr.ifr_ifindex = index;
932 if (ioctl(sk, SIOCGIFNAME, &ifr) < 0) {
937 DBG("ifname %s", ifr.ifr_name);
939 memset(&rt, 0, sizeof(rt));
940 rt.rt_flags = RTF_UP;
942 memset(&addr, 0, sizeof(addr));
943 addr.sin_family = AF_INET;
944 addr.sin_addr.s_addr = INADDR_ANY;
946 memcpy(&rt.rt_genmask, &addr, sizeof(rt.rt_genmask));
947 memcpy(&rt.rt_dst, &addr, sizeof(rt.rt_dst));
948 memcpy(&rt.rt_gateway, &addr, sizeof(rt.rt_gateway));
950 rt.rt_dev = ifr.ifr_name;
952 err = ioctl(sk, SIOCADDRT, &rt);
954 connman_error("Setting default interface route failed (%s)",
961 int connman_inet_clear_gateway_address(int index, const char *gateway)
965 struct sockaddr_in addr;
970 sk = socket(PF_INET, SOCK_DGRAM, 0);
974 memset(&ifr, 0, sizeof(ifr));
975 ifr.ifr_ifindex = index;
977 if (ioctl(sk, SIOCGIFNAME, &ifr) < 0) {
982 DBG("ifname %s", ifr.ifr_name);
984 memset(&rt, 0, sizeof(rt));
985 rt.rt_flags = RTF_UP | RTF_GATEWAY;
987 memset(&addr, 0, sizeof(addr));
988 addr.sin_family = AF_INET;
989 addr.sin_addr.s_addr = INADDR_ANY;
990 memcpy(&rt.rt_dst, &addr, sizeof(rt.rt_dst));
992 memset(&addr, 0, sizeof(addr));
993 addr.sin_family = AF_INET;
994 addr.sin_addr.s_addr = inet_addr(gateway);
995 memcpy(&rt.rt_gateway, &addr, sizeof(rt.rt_gateway));
997 memset(&addr, 0, sizeof(addr));
998 addr.sin_family = AF_INET;
999 addr.sin_addr.s_addr = INADDR_ANY;
1000 memcpy(&rt.rt_genmask, &addr, sizeof(rt.rt_genmask));
1002 err = ioctl(sk, SIOCDELRT, &rt);
1004 connman_error("Removing default gateway route failed (%s)",
1012 int connman_inet_clear_gateway_interface(int index)
1016 struct sockaddr_in addr;
1021 sk = socket(PF_INET, SOCK_DGRAM, 0);
1025 memset(&ifr, 0, sizeof(ifr));
1026 ifr.ifr_ifindex = index;
1028 if (ioctl(sk, SIOCGIFNAME, &ifr) < 0) {
1033 DBG("ifname %s", ifr.ifr_name);
1035 memset(&rt, 0, sizeof(rt));
1036 rt.rt_flags = RTF_UP;
1038 memset(&addr, 0, sizeof(addr));
1039 addr.sin_family = AF_INET;
1040 addr.sin_addr.s_addr = INADDR_ANY;
1042 memcpy(&rt.rt_genmask, &addr, sizeof(rt.rt_genmask));
1043 memcpy(&rt.rt_dst, &addr, sizeof(rt.rt_dst));
1044 memcpy(&rt.rt_gateway, &addr, sizeof(rt.rt_gateway));
1046 rt.rt_dev = ifr.ifr_name;
1048 err = ioctl(sk, SIOCDELRT, &rt);
1050 connman_error("Removing default interface route failed (%s)",
1057 connman_bool_t connman_inet_compare_subnet(int index, const char *host)
1060 struct in_addr _host_addr;
1061 in_addr_t host_addr, netmask_addr, if_addr;
1062 struct sockaddr_in *netmask, *addr;
1065 DBG("host %s", host);
1070 if (inet_aton(host, &_host_addr) == 0)
1072 host_addr = _host_addr.s_addr;
1074 sk = socket(PF_INET, SOCK_DGRAM, 0);
1078 memset(&ifr, 0, sizeof(ifr));
1079 ifr.ifr_ifindex = index;
1081 if (ioctl(sk, SIOCGIFNAME, &ifr) < 0) {
1086 if (ioctl(sk, SIOCGIFNETMASK, &ifr) < 0) {
1091 netmask = (struct sockaddr_in *)&ifr.ifr_netmask;
1092 netmask_addr = netmask->sin_addr.s_addr;
1094 if (ioctl(sk, SIOCGIFADDR, &ifr) < 0) {
1098 addr = (struct sockaddr_in *)&ifr.ifr_addr;
1099 if_addr = addr->sin_addr.s_addr;
1101 return ((if_addr & netmask_addr) == (host_addr & netmask_addr));