5 * Copyright (C) 2007-2012 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
30 #include <sys/socket.h>
31 #include <sys/ioctl.h>
32 #include <arpa/inet.h>
33 #include <netinet/ether.h>
34 #include <netinet/icmp6.h>
35 #include <net/if_arp.h>
37 #include <linux/netlink.h>
38 #include <linux/rtnetlink.h>
39 #include <linux/wireless.h>
45 #ifndef ARPHDR_PHONET_PIPE
46 #define ARPHDR_PHONET_PIPE (821)
49 #define print(arg...) do { if (0) connman_info(arg); } while (0)
50 //#define print(arg...) connman_info(arg)
55 connman_rtnl_link_cb_t newlink;
59 static GSList *watch_list = NULL;
60 static unsigned int watch_id = 0;
62 static GSList *update_list = NULL;
63 static guint update_interval = G_MAXUINT;
64 static guint update_timeout = 0;
66 struct interface_data {
70 enum connman_service_type service_type;
71 enum connman_device_type device_type;
74 static GHashTable *interface_list = NULL;
76 static void free_interface(gpointer data)
78 struct interface_data *interface = data;
80 __connman_technology_remove_interface(interface->service_type,
81 interface->index, interface->name, interface->ident);
83 g_free(interface->ident);
84 g_free(interface->name);
88 static connman_bool_t ether_blacklisted(const char *name)
93 /* virtual interface from VMware */
94 if (g_str_has_prefix(name, "vmnet") == TRUE)
97 /* virtual interface from VirtualBox */
98 if (g_str_has_prefix(name, "vboxnet") == TRUE)
101 /* virtual interface from Virtual Machine Manager */
102 if (g_str_has_prefix(name, "virbr") == TRUE)
108 static connman_bool_t wext_interface(char *ifname)
113 fd = socket(PF_INET, SOCK_DGRAM | SOCK_CLOEXEC, 0);
117 memset(&wrq, 0, sizeof(wrq));
118 strncpy(wrq.ifr_name, ifname, IFNAMSIZ);
120 err = ioctl(fd, SIOCGIWNAME, &wrq);
130 static void read_uevent(struct interface_data *interface)
132 char *filename, line[128];
133 connman_bool_t found_devtype;
136 if (ether_blacklisted(interface->name) == TRUE) {
137 interface->service_type = CONNMAN_SERVICE_TYPE_UNKNOWN;
138 interface->device_type = CONNMAN_DEVICE_TYPE_UNKNOWN;
140 interface->service_type = CONNMAN_SERVICE_TYPE_ETHERNET;
141 interface->device_type = CONNMAN_DEVICE_TYPE_ETHERNET;
144 filename = g_strdup_printf("/sys/class/net/%s/uevent",
147 f = fopen(filename, "re");
154 found_devtype = FALSE;
155 while (fgets(line, sizeof(line), f)) {
158 pos = strchr(line, '\n');
163 if (strncmp(line, "DEVTYPE=", 8) != 0)
166 found_devtype = TRUE;
168 if (strcmp(line + 8, "wlan") == 0) {
169 interface->service_type = CONNMAN_SERVICE_TYPE_WIFI;
170 interface->device_type = CONNMAN_DEVICE_TYPE_WIFI;
171 } else if (strcmp(line + 8, "wwan") == 0) {
172 interface->service_type = CONNMAN_SERVICE_TYPE_CELLULAR;
173 interface->device_type = CONNMAN_DEVICE_TYPE_CELLULAR;
174 } else if (strcmp(line + 8, "bluetooth") == 0) {
175 interface->service_type = CONNMAN_SERVICE_TYPE_BLUETOOTH;
176 interface->device_type = CONNMAN_DEVICE_TYPE_BLUETOOTH;
177 } else if (strcmp(line + 8, "wimax") == 0) {
178 interface->service_type = CONNMAN_SERVICE_TYPE_WIMAX;
179 interface->device_type = CONNMAN_DEVICE_TYPE_WIMAX;
180 } else if (strcmp(line + 8, "gadget") == 0) {
181 interface->service_type = CONNMAN_SERVICE_TYPE_GADGET;
182 interface->device_type = CONNMAN_DEVICE_TYPE_GADGET;
185 interface->service_type = CONNMAN_SERVICE_TYPE_UNKNOWN;
186 interface->device_type = CONNMAN_DEVICE_TYPE_UNKNOWN;
195 /* We haven't got a DEVTYPE, let's check if it's a wireless device */
196 if (wext_interface(interface->name)) {
197 interface->service_type = CONNMAN_SERVICE_TYPE_WIFI;
198 interface->device_type = CONNMAN_DEVICE_TYPE_WIFI;
200 connman_error("%s runs an unsupported 802.11 driver",
205 enum connman_device_type __connman_rtnl_get_device_type(int index)
207 struct interface_data *interface;
209 interface = g_hash_table_lookup(interface_list,
210 GINT_TO_POINTER(index));
211 if (interface == NULL)
212 return CONNMAN_DEVICE_TYPE_UNKNOWN;
214 return interface->device_type;
218 * connman_rtnl_add_newlink_watch:
219 * @index: network device index
220 * @callback: callback function
221 * @user_data: callback data;
223 * Add a new RTNL watch for newlink events
225 * Returns: %0 on failure and a unique id on success
227 unsigned int connman_rtnl_add_newlink_watch(int index,
228 connman_rtnl_link_cb_t callback, void *user_data)
230 struct watch_data *watch;
232 watch = g_try_new0(struct watch_data, 1);
236 watch->id = ++watch_id;
237 watch->index = index;
239 watch->newlink = callback;
240 watch->user_data = user_data;
242 watch_list = g_slist_prepend(watch_list, watch);
244 DBG("id %d", watch->id);
247 unsigned int flags = __connman_ipconfig_get_flags_from_index(index);
250 callback(flags, 0, user_data);
257 * connman_rtnl_remove_watch:
258 * @id: watch identifier
260 * Remove the RTNL watch for the identifier
262 void connman_rtnl_remove_watch(unsigned int id)
271 for (list = watch_list; list; list = list->next) {
272 struct watch_data *watch = list->data;
274 if (watch->id == id) {
275 watch_list = g_slist_remove(watch_list, watch);
282 static void trigger_rtnl(int index, void *user_data)
284 struct connman_rtnl *rtnl = user_data;
287 unsigned short type = __connman_ipconfig_get_type_from_index(index);
288 unsigned int flags = __connman_ipconfig_get_flags_from_index(index);
290 rtnl->newlink(type, index, flags, 0);
293 if (rtnl->newgateway) {
294 const char *gateway =
295 __connman_ipconfig_get_gateway_from_index(index,
296 CONNMAN_IPCONFIG_TYPE_ALL);
299 rtnl->newgateway(index, gateway);
303 static GSList *rtnl_list = NULL;
305 static gint compare_priority(gconstpointer a, gconstpointer b)
307 const struct connman_rtnl *rtnl1 = a;
308 const struct connman_rtnl *rtnl2 = b;
310 return rtnl2->priority - rtnl1->priority;
314 * connman_rtnl_register:
317 * Register a new RTNL module
319 * Returns: %0 on success
321 int connman_rtnl_register(struct connman_rtnl *rtnl)
323 DBG("rtnl %p name %s", rtnl, rtnl->name);
325 rtnl_list = g_slist_insert_sorted(rtnl_list, rtnl,
328 __connman_ipconfig_foreach(trigger_rtnl, rtnl);
334 * connman_rtnl_unregister:
337 * Remove a previously registered RTNL module
339 void connman_rtnl_unregister(struct connman_rtnl *rtnl)
341 DBG("rtnl %p name %s", rtnl, rtnl->name);
343 rtnl_list = g_slist_remove(rtnl_list, rtnl);
346 static const char *operstate2str(unsigned char operstate)
349 case IF_OPER_UNKNOWN:
351 case IF_OPER_NOTPRESENT:
352 return "NOT-PRESENT";
355 case IF_OPER_LOWERLAYERDOWN:
356 return "LOWER-LAYER-DOWN";
357 case IF_OPER_TESTING:
359 case IF_OPER_DORMANT:
368 static void extract_link(struct ifinfomsg *msg, int bytes,
369 struct ether_addr *address, const char **ifname,
370 unsigned int *mtu, unsigned char *operstate,
371 struct rtnl_link_stats *stats)
375 for (attr = IFLA_RTA(msg); RTA_OK(attr, bytes);
376 attr = RTA_NEXT(attr, bytes)) {
377 switch (attr->rta_type) {
380 memcpy(address, RTA_DATA(attr), ETH_ALEN);
384 *ifname = RTA_DATA(attr);
388 *mtu = *((unsigned int *) RTA_DATA(attr));
392 memcpy(stats, RTA_DATA(attr),
393 sizeof(struct rtnl_link_stats));
396 if (operstate != NULL)
397 *operstate = *((unsigned char *) RTA_DATA(attr));
405 static void process_newlink(unsigned short type, int index, unsigned flags,
406 unsigned change, struct ifinfomsg *msg, int bytes)
408 struct ether_addr address = {{ 0, 0, 0, 0, 0, 0 }};
409 struct ether_addr compare = {{ 0, 0, 0, 0, 0, 0 }};
410 struct rtnl_link_stats stats;
411 unsigned char operstate = 0xff;
412 struct interface_data *interface;
413 const char *ifname = NULL;
414 unsigned int mtu = 0;
415 char ident[13], str[18];
418 memset(&stats, 0, sizeof(stats));
419 extract_link(msg, bytes, &address, &ifname, &mtu, &operstate, &stats);
421 snprintf(ident, 13, "%02x%02x%02x%02x%02x%02x",
422 address.ether_addr_octet[0],
423 address.ether_addr_octet[1],
424 address.ether_addr_octet[2],
425 address.ether_addr_octet[3],
426 address.ether_addr_octet[4],
427 address.ether_addr_octet[5]);
429 snprintf(str, 18, "%02X:%02X:%02X:%02X:%02X:%02X",
430 address.ether_addr_octet[0],
431 address.ether_addr_octet[1],
432 address.ether_addr_octet[2],
433 address.ether_addr_octet[3],
434 address.ether_addr_octet[4],
435 address.ether_addr_octet[5]);
439 case ARPHRD_LOOPBACK:
440 case ARPHDR_PHONET_PIPE:
442 __connman_ipconfig_newlink(index, type, flags,
447 if (memcmp(&address, &compare, ETH_ALEN) != 0)
448 connman_info("%s {newlink} index %d address %s mtu %u",
449 ifname, index, str, mtu);
451 if (operstate != 0xff)
452 connman_info("%s {newlink} index %d operstate %u <%s>",
453 ifname, index, operstate,
454 operstate2str(operstate));
456 interface = g_hash_table_lookup(interface_list, GINT_TO_POINTER(index));
457 if (interface == NULL) {
458 interface = g_new0(struct interface_data, 1);
459 interface->index = index;
460 interface->name = g_strdup(ifname);
461 interface->ident = g_strdup(ident);
463 g_hash_table_insert(interface_list,
464 GINT_TO_POINTER(index), interface);
466 if (type == ARPHRD_ETHER)
467 read_uevent(interface);
469 __connman_technology_add_interface(interface->service_type,
470 interface->index, interface->name, interface->ident);
473 for (list = rtnl_list; list; list = list->next) {
474 struct connman_rtnl *rtnl = list->data;
477 rtnl->newlink(type, index, flags, change);
480 for (list = watch_list; list; list = list->next) {
481 struct watch_data *watch = list->data;
483 if (watch->index != index)
487 watch->newlink(flags, change, watch->user_data);
491 static void process_dellink(unsigned short type, int index, unsigned flags,
492 unsigned change, struct ifinfomsg *msg, int bytes)
494 struct rtnl_link_stats stats;
495 unsigned char operstate = 0xff;
496 const char *ifname = NULL;
499 memset(&stats, 0, sizeof(stats));
500 extract_link(msg, bytes, NULL, &ifname, NULL, &operstate, &stats);
502 if (operstate != 0xff)
503 connman_info("%s {dellink} index %d operstate %u <%s>",
504 ifname, index, operstate,
505 operstate2str(operstate));
507 for (list = rtnl_list; list; list = list->next) {
508 struct connman_rtnl *rtnl = list->data;
511 rtnl->dellink(type, index, flags, change);
516 case ARPHRD_LOOPBACK:
518 __connman_ipconfig_dellink(index, &stats);
522 g_hash_table_remove(interface_list, GINT_TO_POINTER(index));
525 static void extract_ipv4_addr(struct ifaddrmsg *msg, int bytes,
527 struct in_addr *local,
528 struct in_addr *address,
529 struct in_addr *broadcast)
533 for (attr = IFA_RTA(msg); RTA_OK(attr, bytes);
534 attr = RTA_NEXT(attr, bytes)) {
535 switch (attr->rta_type) {
538 *address = *((struct in_addr *) RTA_DATA(attr));
542 *local = *((struct in_addr *) RTA_DATA(attr));
545 if (broadcast != NULL)
546 *broadcast = *((struct in_addr *) RTA_DATA(attr));
550 *label = RTA_DATA(attr);
556 static void extract_ipv6_addr(struct ifaddrmsg *msg, int bytes,
557 struct in6_addr *addr,
558 struct in6_addr *local)
562 for (attr = IFA_RTA(msg); RTA_OK(attr, bytes);
563 attr = RTA_NEXT(attr, bytes)) {
564 switch (attr->rta_type) {
567 *addr = *((struct in6_addr *) RTA_DATA(attr));
571 *local = *((struct in6_addr *) RTA_DATA(attr));
577 static void process_newaddr(unsigned char family, unsigned char prefixlen,
578 int index, struct ifaddrmsg *msg, int bytes)
580 const char *label = NULL;
582 char ip_string[INET6_ADDRSTRLEN];
584 if (family == AF_INET) {
585 struct in_addr ipv4_addr = { INADDR_ANY };
587 extract_ipv4_addr(msg, bytes, &label, &ipv4_addr, NULL, NULL);
589 } else if (family == AF_INET6) {
590 struct in6_addr ipv6_address, ipv6_local;
592 extract_ipv6_addr(msg, bytes, &ipv6_address, &ipv6_local);
593 if (IN6_IS_ADDR_LINKLOCAL(&ipv6_address))
601 if (inet_ntop(family, src, ip_string, INET6_ADDRSTRLEN) == NULL)
604 __connman_ipconfig_newaddr(index, family, label,
605 prefixlen, ip_string);
607 if (family == AF_INET6) {
609 * Re-create RDNSS configured servers if there are any
610 * for this interface. This is done because we might
611 * have now properly configured interface with proper
612 * autoconfigured address.
614 char *interface = connman_inet_ifname(index);
616 __connman_resolver_redo_servers(interface);
622 static void process_deladdr(unsigned char family, unsigned char prefixlen,
623 int index, struct ifaddrmsg *msg, int bytes)
625 const char *label = NULL;
627 char ip_string[INET6_ADDRSTRLEN];
629 if (family == AF_INET) {
630 struct in_addr ipv4_addr = { INADDR_ANY };
632 extract_ipv4_addr(msg, bytes, &label, &ipv4_addr, NULL, NULL);
634 } else if (family == AF_INET6) {
635 struct in6_addr ipv6_address, ipv6_local;
637 extract_ipv6_addr(msg, bytes, &ipv6_address, &ipv6_local);
638 if (IN6_IS_ADDR_LINKLOCAL(&ipv6_address))
646 if (inet_ntop(family, src, ip_string, INET6_ADDRSTRLEN) == NULL)
649 __connman_ipconfig_deladdr(index, family, label,
650 prefixlen, ip_string);
653 static void extract_ipv4_route(struct rtmsg *msg, int bytes, int *index,
655 struct in_addr *gateway)
659 for (attr = RTM_RTA(msg); RTA_OK(attr, bytes);
660 attr = RTA_NEXT(attr, bytes)) {
661 switch (attr->rta_type) {
664 *dst = *((struct in_addr *) RTA_DATA(attr));
668 *gateway = *((struct in_addr *) RTA_DATA(attr));
672 *index = *((int *) RTA_DATA(attr));
678 static void extract_ipv6_route(struct rtmsg *msg, int bytes, int *index,
679 struct in6_addr *dst,
680 struct in6_addr *gateway)
684 for (attr = RTM_RTA(msg); RTA_OK(attr, bytes);
685 attr = RTA_NEXT(attr, bytes)) {
686 switch (attr->rta_type) {
689 *dst = *((struct in6_addr *) RTA_DATA(attr));
694 *((struct in6_addr *) RTA_DATA(attr));
698 *index = *((int *) RTA_DATA(attr));
704 static void process_newroute(unsigned char family, unsigned char scope,
705 struct rtmsg *msg, int bytes)
708 char dststr[INET6_ADDRSTRLEN], gatewaystr[INET6_ADDRSTRLEN];
711 if (family == AF_INET) {
712 struct in_addr dst = { INADDR_ANY }, gateway = { INADDR_ANY };
714 extract_ipv4_route(msg, bytes, &index, &dst, &gateway);
716 inet_ntop(family, &dst, dststr, sizeof(dststr));
717 inet_ntop(family, &gateway, gatewaystr, sizeof(gatewaystr));
719 __connman_ipconfig_newroute(index, family, scope, dststr,
722 /* skip host specific routes */
723 if (scope != RT_SCOPE_UNIVERSE &&
724 !(scope == RT_SCOPE_LINK && dst.s_addr == INADDR_ANY))
727 if (dst.s_addr != INADDR_ANY)
730 } else if (family == AF_INET6) {
731 struct in6_addr dst = IN6ADDR_ANY_INIT,
732 gateway = IN6ADDR_ANY_INIT;
734 extract_ipv6_route(msg, bytes, &index, &dst, &gateway);
736 inet_ntop(family, &dst, dststr, sizeof(dststr));
737 inet_ntop(family, &gateway, gatewaystr, sizeof(gatewaystr));
739 __connman_ipconfig_newroute(index, family, scope, dststr,
742 /* skip host specific routes */
743 if (scope != RT_SCOPE_UNIVERSE &&
744 !(scope == RT_SCOPE_LINK &&
745 IN6_IS_ADDR_UNSPECIFIED(&dst)))
748 if (!IN6_IS_ADDR_UNSPECIFIED(&dst))
753 for (list = rtnl_list; list; list = list->next) {
754 struct connman_rtnl *rtnl = list->data;
756 if (rtnl->newgateway)
757 rtnl->newgateway(index, gatewaystr);
761 static void process_delroute(unsigned char family, unsigned char scope,
762 struct rtmsg *msg, int bytes)
765 char dststr[INET6_ADDRSTRLEN], gatewaystr[INET6_ADDRSTRLEN];
768 if (family == AF_INET) {
769 struct in_addr dst = { INADDR_ANY }, gateway = { INADDR_ANY };
771 extract_ipv4_route(msg, bytes, &index, &dst, &gateway);
773 inet_ntop(family, &dst, dststr, sizeof(dststr));
774 inet_ntop(family, &gateway, gatewaystr, sizeof(gatewaystr));
776 __connman_ipconfig_delroute(index, family, scope, dststr,
779 /* skip host specific routes */
780 if (scope != RT_SCOPE_UNIVERSE &&
781 !(scope == RT_SCOPE_LINK && dst.s_addr == INADDR_ANY))
784 if (dst.s_addr != INADDR_ANY)
787 } else if (family == AF_INET6) {
788 struct in6_addr dst = IN6ADDR_ANY_INIT,
789 gateway = IN6ADDR_ANY_INIT;
791 extract_ipv6_route(msg, bytes, &index, &dst, &gateway);
793 inet_ntop(family, &dst, dststr, sizeof(dststr));
794 inet_ntop(family, &gateway, gatewaystr, sizeof(gatewaystr));
796 __connman_ipconfig_delroute(index, family, scope, dststr,
799 /* skip host specific routes */
800 if (scope != RT_SCOPE_UNIVERSE &&
801 !(scope == RT_SCOPE_LINK &&
802 IN6_IS_ADDR_UNSPECIFIED(&dst)))
805 if (!IN6_IS_ADDR_UNSPECIFIED(&dst))
810 for (list = rtnl_list; list; list = list->next) {
811 struct connman_rtnl *rtnl = list->data;
813 if (rtnl->delgateway)
814 rtnl->delgateway(index, gatewaystr);
818 static inline void print_ether(struct rtattr *attr, const char *name)
820 int len = (int) RTA_PAYLOAD(attr);
822 if (len == ETH_ALEN) {
823 struct ether_addr eth;
824 memcpy(ð, RTA_DATA(attr), ETH_ALEN);
825 print(" attr %s (len %d) %s\n", name, len, ether_ntoa(ð));
827 print(" attr %s (len %d)\n", name, len);
830 static inline void print_inet(struct rtattr *attr, const char *name,
831 unsigned char family)
833 int len = (int) RTA_PAYLOAD(attr);
835 if (family == AF_INET && len == sizeof(struct in_addr)) {
837 addr = *((struct in_addr *) RTA_DATA(attr));
838 print(" attr %s (len %d) %s\n", name, len, inet_ntoa(addr));
840 print(" attr %s (len %d)\n", name, len);
843 static inline void print_string(struct rtattr *attr, const char *name)
845 print(" attr %s (len %d) %s\n", name, (int) RTA_PAYLOAD(attr),
846 (char *) RTA_DATA(attr));
849 static inline void print_byte(struct rtattr *attr, const char *name)
851 print(" attr %s (len %d) 0x%02x\n", name, (int) RTA_PAYLOAD(attr),
852 *((unsigned char *) RTA_DATA(attr)));
855 static inline void print_integer(struct rtattr *attr, const char *name)
857 print(" attr %s (len %d) %d\n", name, (int) RTA_PAYLOAD(attr),
858 *((int *) RTA_DATA(attr)));
861 static inline void print_attr(struct rtattr *attr, const char *name)
863 int len = (int) RTA_PAYLOAD(attr);
866 print(" attr %s (len %d)\n", name, len);
868 print(" attr %d (len %d)\n", attr->rta_type, len);
871 static void rtnl_link(struct nlmsghdr *hdr)
873 struct ifinfomsg *msg;
877 msg = (struct ifinfomsg *) NLMSG_DATA(hdr);
878 bytes = IFLA_PAYLOAD(hdr);
880 print("ifi_index %d ifi_flags 0x%04x", msg->ifi_index, msg->ifi_flags);
882 for (attr = IFLA_RTA(msg); RTA_OK(attr, bytes);
883 attr = RTA_NEXT(attr, bytes)) {
884 switch (attr->rta_type) {
886 print_ether(attr, "address");
889 print_ether(attr, "broadcast");
892 print_string(attr, "ifname");
895 print_integer(attr, "mtu");
898 print_attr(attr, "link");
901 print_attr(attr, "qdisc");
904 print_attr(attr, "stats");
907 print_attr(attr, "cost");
910 print_attr(attr, "priority");
913 print_attr(attr, "master");
916 print_attr(attr, "wireless");
919 print_attr(attr, "protinfo");
922 print_integer(attr, "txqlen");
925 print_attr(attr, "map");
928 print_attr(attr, "weight");
931 print_byte(attr, "operstate");
934 print_byte(attr, "linkmode");
937 print_attr(attr, NULL);
943 static void rtnl_newlink(struct nlmsghdr *hdr)
945 struct ifinfomsg *msg = (struct ifinfomsg *) NLMSG_DATA(hdr);
949 process_newlink(msg->ifi_type, msg->ifi_index, msg->ifi_flags,
950 msg->ifi_change, msg, IFA_PAYLOAD(hdr));
953 static void rtnl_dellink(struct nlmsghdr *hdr)
955 struct ifinfomsg *msg = (struct ifinfomsg *) NLMSG_DATA(hdr);
959 process_dellink(msg->ifi_type, msg->ifi_index, msg->ifi_flags,
960 msg->ifi_change, msg, IFA_PAYLOAD(hdr));
963 static void rtnl_addr(struct nlmsghdr *hdr)
965 struct ifaddrmsg *msg;
969 msg = (struct ifaddrmsg *) NLMSG_DATA(hdr);
970 bytes = IFA_PAYLOAD(hdr);
972 print("ifa_family %d ifa_index %d", msg->ifa_family, msg->ifa_index);
974 for (attr = IFA_RTA(msg); RTA_OK(attr, bytes);
975 attr = RTA_NEXT(attr, bytes)) {
976 switch (attr->rta_type) {
978 print_inet(attr, "address", msg->ifa_family);
981 print_inet(attr, "local", msg->ifa_family);
984 print_string(attr, "label");
987 print_inet(attr, "broadcast", msg->ifa_family);
990 print_attr(attr, "anycast");
993 print_attr(attr, "cacheinfo");
996 print_attr(attr, "multicast");
999 print_attr(attr, NULL);
1005 static void rtnl_newaddr(struct nlmsghdr *hdr)
1007 struct ifaddrmsg *msg = (struct ifaddrmsg *) NLMSG_DATA(hdr);
1011 process_newaddr(msg->ifa_family, msg->ifa_prefixlen, msg->ifa_index,
1012 msg, IFA_PAYLOAD(hdr));
1015 static void rtnl_deladdr(struct nlmsghdr *hdr)
1017 struct ifaddrmsg *msg = (struct ifaddrmsg *) NLMSG_DATA(hdr);
1021 process_deladdr(msg->ifa_family, msg->ifa_prefixlen, msg->ifa_index,
1022 msg, IFA_PAYLOAD(hdr));
1025 static void rtnl_route(struct nlmsghdr *hdr)
1028 struct rtattr *attr;
1031 msg = (struct rtmsg *) NLMSG_DATA(hdr);
1032 bytes = RTM_PAYLOAD(hdr);
1034 print("rtm_family %d rtm_table %d rtm_protocol %d",
1035 msg->rtm_family, msg->rtm_table, msg->rtm_protocol);
1036 print("rtm_scope %d rtm_type %d rtm_flags 0x%04x",
1037 msg->rtm_scope, msg->rtm_type, msg->rtm_flags);
1039 for (attr = RTM_RTA(msg); RTA_OK(attr, bytes);
1040 attr = RTA_NEXT(attr, bytes)) {
1041 switch (attr->rta_type) {
1043 print_inet(attr, "dst", msg->rtm_family);
1046 print_inet(attr, "src", msg->rtm_family);
1049 print_string(attr, "iif");
1052 print_integer(attr, "oif");
1055 print_inet(attr, "gateway", msg->rtm_family);
1058 print_attr(attr, "priority");
1061 print_inet(attr, "prefsrc", msg->rtm_family);
1064 print_attr(attr, "metrics");
1067 print_integer(attr, "table");
1070 print_attr(attr, NULL);
1076 static connman_bool_t is_route_rtmsg(struct rtmsg *msg)
1079 if (msg->rtm_table != RT_TABLE_MAIN)
1082 if (msg->rtm_protocol != RTPROT_BOOT &&
1083 msg->rtm_protocol != RTPROT_KERNEL)
1086 if (msg->rtm_type != RTN_UNICAST)
1092 static void rtnl_newroute(struct nlmsghdr *hdr)
1094 struct rtmsg *msg = (struct rtmsg *) NLMSG_DATA(hdr);
1098 if (is_route_rtmsg(msg))
1099 process_newroute(msg->rtm_family, msg->rtm_scope,
1100 msg, RTM_PAYLOAD(hdr));
1103 static void rtnl_delroute(struct nlmsghdr *hdr)
1105 struct rtmsg *msg = (struct rtmsg *) NLMSG_DATA(hdr);
1109 if (is_route_rtmsg(msg))
1110 process_delroute(msg->rtm_family, msg->rtm_scope,
1111 msg, RTM_PAYLOAD(hdr));
1114 static void *rtnl_nd_opt_rdnss(struct nd_opt_hdr *opt, guint32 *lifetime,
1117 guint32 *optint = (void *)opt;
1119 if (opt->nd_opt_len < 3)
1122 if (*lifetime > ntohl(optint[1]))
1123 *lifetime = ntohl(optint[1]);
1125 /* nd_opt_len is in units of 8 bytes. The header is 1 unit (8 bytes)
1126 and each address is another 2 units (16 bytes).
1127 So the number of addresses (given rounding) is nd_opt_len/2 */
1128 *nr_servers = opt->nd_opt_len / 2;
1130 /* And they start 8 bytes into the packet, or two guint32s in. */
1134 static const char **rtnl_nd_opt_dnssl(struct nd_opt_hdr *opt, guint32 *lifetime)
1136 const char **domains = NULL;
1137 guint32 *optint = (void *)opt;
1138 unsigned char *optc = (void *)&optint[2];
1139 int data_len = (opt->nd_opt_len * 8) - 8;
1143 if (*lifetime > ntohl(optint[1]))
1144 *lifetime = ntohl(optint[1]);
1146 /* Turn it into normal strings by converting the length bytes into '.',
1147 and count how many search domains there are while we're at it. */
1149 while (i < data_len) {
1150 if (optc[i] > 0x3f) {
1151 DBG("DNSSL contains compressed elements in violation of RFC6106");
1158 /* Check for double zero */
1159 if (i < data_len && optc[i] == 0)
1167 if (i >= data_len) {
1168 DBG("DNSSL data overflows option length");
1175 domains = g_try_new0(const char *, nr_domains + 1);
1179 /* Now point to the normal strings, missing out the leading '.' that
1180 each of them will have now. */
1181 for (i = 0; i < nr_domains; i++) {
1182 domains[i] = (char *)optc + 1;
1183 optc += strlen((char *)optc) + 1;
1189 static void rtnl_newnduseropt(struct nlmsghdr *hdr)
1191 struct nduseroptmsg *msg = (struct nduseroptmsg *) NLMSG_DATA(hdr);
1192 struct nd_opt_hdr *opt;
1193 guint32 lifetime = -1;
1194 const char **domains = NULL;
1195 struct in6_addr *servers = NULL;
1196 int i, nr_servers = 0;
1197 int msglen = msg->nduseropt_opts_len;
1200 DBG("family %d index %d len %d type %d code %d",
1201 msg->nduseropt_family, msg->nduseropt_ifindex,
1202 msg->nduseropt_opts_len, msg->nduseropt_icmp_type,
1203 msg->nduseropt_icmp_code);
1205 if (msg->nduseropt_family != AF_INET6 ||
1206 msg->nduseropt_icmp_type != ND_ROUTER_ADVERT ||
1207 msg->nduseropt_icmp_code != 0)
1210 interface = connman_inet_ifname(msg->nduseropt_ifindex);
1214 for (opt = (void *)&msg[1];
1216 msglen -= opt->nd_opt_len * 8,
1217 opt = ((void *)opt) + opt->nd_opt_len*8) {
1219 DBG("remaining %d nd opt type %d len %d\n",
1220 msglen, opt->nd_opt_type, opt->nd_opt_len);
1222 if (opt->nd_opt_type == 25) { /* ND_OPT_RDNSS */
1225 servers = rtnl_nd_opt_rdnss(opt, &lifetime,
1227 for (i = 0; i < nr_servers; i++) {
1228 if (!inet_ntop(AF_INET6, servers + i, buf,
1232 connman_resolver_append_lifetime(interface,
1233 NULL, buf, lifetime);
1236 } else if (opt->nd_opt_type == 31) { /* ND_OPT_DNSSL */
1239 domains = rtnl_nd_opt_dnssl(opt, &lifetime);
1240 for (i = 0; domains != NULL && domains[i] != NULL; i++)
1241 connman_resolver_append_lifetime(interface,
1242 domains[i], NULL, lifetime);
1250 static const char *type2string(uint16_t type)
1277 case RTM_NEWNDUSEROPT:
1278 return "NEWNDUSEROPT";
1284 static GIOChannel *channel = NULL;
1286 struct rtnl_request {
1287 struct nlmsghdr hdr;
1288 struct rtgenmsg msg;
1290 #define RTNL_REQUEST_SIZE (sizeof(struct nlmsghdr) + sizeof(struct rtgenmsg))
1292 static GSList *request_list = NULL;
1293 static guint32 request_seq = 0;
1295 static struct rtnl_request *find_request(guint32 seq)
1299 for (list = request_list; list; list = list->next) {
1300 struct rtnl_request *req = list->data;
1302 if (req->hdr.nlmsg_seq == seq)
1309 static int send_request(struct rtnl_request *req)
1311 struct sockaddr_nl addr;
1314 DBG("%s len %d type %d flags 0x%04x seq %d",
1315 type2string(req->hdr.nlmsg_type),
1316 req->hdr.nlmsg_len, req->hdr.nlmsg_type,
1317 req->hdr.nlmsg_flags, req->hdr.nlmsg_seq);
1319 sk = g_io_channel_unix_get_fd(channel);
1321 memset(&addr, 0, sizeof(addr));
1322 addr.nl_family = AF_NETLINK;
1324 return sendto(sk, req, req->hdr.nlmsg_len, 0,
1325 (struct sockaddr *) &addr, sizeof(addr));
1328 static int queue_request(struct rtnl_request *req)
1330 request_list = g_slist_append(request_list, req);
1332 if (g_slist_length(request_list) > 1)
1335 return send_request(req);
1338 static int process_response(guint32 seq)
1340 struct rtnl_request *req;
1344 req = find_request(seq);
1346 request_list = g_slist_remove(request_list, req);
1350 req = g_slist_nth_data(request_list, 0);
1354 return send_request(req);
1357 static void rtnl_message(void *buf, size_t len)
1359 DBG("buf %p len %zd", buf, len);
1362 struct nlmsghdr *hdr = buf;
1363 struct nlmsgerr *err;
1365 if (!NLMSG_OK(hdr, len))
1368 DBG("%s len %d type %d flags 0x%04x seq %d pid %d",
1369 type2string(hdr->nlmsg_type),
1370 hdr->nlmsg_len, hdr->nlmsg_type,
1371 hdr->nlmsg_flags, hdr->nlmsg_seq,
1374 switch (hdr->nlmsg_type) {
1379 process_response(hdr->nlmsg_seq);
1382 err = NLMSG_DATA(hdr);
1383 DBG("error %d (%s)", -err->error,
1384 strerror(-err->error));
1404 case RTM_NEWNDUSEROPT:
1405 rtnl_newnduseropt(hdr);
1409 len -= hdr->nlmsg_len;
1410 buf += hdr->nlmsg_len;
1414 static gboolean netlink_event(GIOChannel *chan,
1415 GIOCondition cond, gpointer data)
1417 unsigned char buf[4096];
1418 struct sockaddr_nl nladdr;
1419 socklen_t addr_len = sizeof(nladdr);
1423 if (cond & (G_IO_NVAL | G_IO_HUP | G_IO_ERR))
1426 memset(buf, 0, sizeof(buf));
1427 memset(&nladdr, 0, sizeof(nladdr));
1429 fd = g_io_channel_unix_get_fd(chan);
1431 status = recvfrom(fd, buf, sizeof(buf), 0,
1432 (struct sockaddr *) &nladdr, &addr_len);
1434 if (errno == EINTR || errno == EAGAIN)
1443 if (nladdr.nl_pid != 0) { /* not sent by kernel, ignore */
1444 DBG("Received msg from %u, ignoring it", nladdr.nl_pid);
1448 rtnl_message(buf, status);
1453 static int send_getlink(void)
1455 struct rtnl_request *req;
1459 req = g_try_malloc0(RTNL_REQUEST_SIZE);
1463 req->hdr.nlmsg_len = RTNL_REQUEST_SIZE;
1464 req->hdr.nlmsg_type = RTM_GETLINK;
1465 req->hdr.nlmsg_flags = NLM_F_REQUEST | NLM_F_DUMP;
1466 req->hdr.nlmsg_pid = 0;
1467 req->hdr.nlmsg_seq = request_seq++;
1468 req->msg.rtgen_family = AF_INET;
1470 return queue_request(req);
1473 static int send_getaddr(void)
1475 struct rtnl_request *req;
1479 req = g_try_malloc0(RTNL_REQUEST_SIZE);
1483 req->hdr.nlmsg_len = RTNL_REQUEST_SIZE;
1484 req->hdr.nlmsg_type = RTM_GETADDR;
1485 req->hdr.nlmsg_flags = NLM_F_REQUEST | NLM_F_DUMP;
1486 req->hdr.nlmsg_pid = 0;
1487 req->hdr.nlmsg_seq = request_seq++;
1488 req->msg.rtgen_family = AF_INET;
1490 return queue_request(req);
1493 static int send_getroute(void)
1495 struct rtnl_request *req;
1499 req = g_try_malloc0(RTNL_REQUEST_SIZE);
1503 req->hdr.nlmsg_len = RTNL_REQUEST_SIZE;
1504 req->hdr.nlmsg_type = RTM_GETROUTE;
1505 req->hdr.nlmsg_flags = NLM_F_REQUEST | NLM_F_DUMP;
1506 req->hdr.nlmsg_pid = 0;
1507 req->hdr.nlmsg_seq = request_seq++;
1508 req->msg.rtgen_family = AF_INET;
1510 return queue_request(req);
1513 static gboolean update_timeout_cb(gpointer user_data)
1515 __connman_rtnl_request_update();
1520 static void update_interval_callback(guint min)
1522 if (update_timeout > 0)
1523 g_source_remove(update_timeout);
1525 if (min < G_MAXUINT) {
1526 update_interval = min;
1527 update_timeout = g_timeout_add_seconds(update_interval,
1528 update_timeout_cb, NULL);
1531 update_interval = G_MAXUINT;
1535 static gint compare_interval(gconstpointer a, gconstpointer b)
1537 guint val_a = GPOINTER_TO_UINT(a);
1538 guint val_b = GPOINTER_TO_UINT(b);
1540 return val_a - val_b;
1543 unsigned int __connman_rtnl_update_interval_add(unsigned int interval)
1550 update_list = g_slist_insert_sorted(update_list,
1551 GUINT_TO_POINTER(interval), compare_interval);
1553 min = GPOINTER_TO_UINT(g_slist_nth_data(update_list, 0));
1554 if (min < update_interval) {
1555 update_interval_callback(min);
1556 __connman_rtnl_request_update();
1559 return update_interval;
1562 unsigned int __connman_rtnl_update_interval_remove(unsigned int interval)
1564 guint min = G_MAXUINT;
1569 update_list = g_slist_remove(update_list, GINT_TO_POINTER(interval));
1571 if (update_list != NULL)
1572 min = GPOINTER_TO_UINT(g_slist_nth_data(update_list, 0));
1574 if (min > update_interval)
1575 update_interval_callback(min);
1580 int __connman_rtnl_request_update(void)
1582 return send_getlink();
1585 int __connman_rtnl_init(void)
1587 struct sockaddr_nl addr;
1592 interface_list = g_hash_table_new_full(g_direct_hash, g_direct_equal,
1593 NULL, free_interface);
1595 sk = socket(PF_NETLINK, SOCK_DGRAM | SOCK_CLOEXEC, NETLINK_ROUTE);
1599 memset(&addr, 0, sizeof(addr));
1600 addr.nl_family = AF_NETLINK;
1601 addr.nl_groups = RTMGRP_LINK | RTMGRP_IPV4_IFADDR | RTMGRP_IPV4_ROUTE |
1602 RTMGRP_IPV6_IFADDR | RTMGRP_IPV6_ROUTE |
1603 (1<<(RTNLGRP_ND_USEROPT-1));
1605 if (bind(sk, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
1610 channel = g_io_channel_unix_new(sk);
1611 g_io_channel_set_close_on_unref(channel, TRUE);
1613 g_io_channel_set_encoding(channel, NULL, NULL);
1614 g_io_channel_set_buffered(channel, FALSE);
1616 g_io_add_watch(channel, G_IO_IN | G_IO_NVAL | G_IO_HUP | G_IO_ERR,
1617 netlink_event, NULL);
1622 void __connman_rtnl_start(void)
1631 void __connman_rtnl_cleanup(void)
1637 for (list = watch_list; list; list = list->next) {
1638 struct watch_data *watch = list->data;
1640 DBG("removing watch %d", watch->id);
1646 g_slist_free(watch_list);
1649 g_slist_free(update_list);
1652 for (list = request_list; list; list = list->next) {
1653 struct rtnl_request *req = list->data;
1655 DBG("%s len %d type %d flags 0x%04x seq %d",
1656 type2string(req->hdr.nlmsg_type),
1657 req->hdr.nlmsg_len, req->hdr.nlmsg_type,
1658 req->hdr.nlmsg_flags, req->hdr.nlmsg_seq);
1664 g_slist_free(request_list);
1665 request_list = NULL;
1667 g_io_channel_shutdown(channel, TRUE, NULL);
1668 g_io_channel_unref(channel);
1672 g_hash_table_destroy(interface_list);