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
29 #include <sys/socket.h>
30 #include <arpa/inet.h>
31 #include <netinet/ether.h>
32 #include <net/if_arp.h>
34 #include <linux/netlink.h>
35 #include <linux/rtnetlink.h>
41 #ifndef ARPHDR_PHONET_PIPE
42 #define ARPHDR_PHONET_PIPE (821)
45 #define print(arg...) do { } while (0)
46 //#define print(arg...) connman_info(arg)
51 connman_rtnl_link_cb_t newlink;
55 static GSList *watch_list = NULL;
56 static unsigned int watch_id = 0;
58 static GSList *update_list = NULL;
59 static guint update_interval = G_MAXUINT;
60 static guint update_timeout = 0;
62 struct interface_data {
66 enum connman_service_type service_type;
67 enum connman_device_type device_type;
70 static GHashTable *interface_list = NULL;
72 static void free_interface(gpointer data)
74 struct interface_data *interface = data;
76 __connman_technology_remove_interface(interface->service_type,
77 interface->index, interface->name, interface->ident);
79 g_free(interface->ident);
80 g_free(interface->name);
84 static connman_bool_t ether_blacklisted(const char *name)
89 /* virtual interface from VMware */
90 if (g_str_has_prefix(name, "vmnet") == TRUE)
93 /* virtual interface from VirtualBox */
94 if (g_str_has_prefix(name, "vboxnet") == TRUE)
97 /* virtual interface from Virtual Machine Manager */
98 if (g_str_has_prefix(name, "virbr") == TRUE)
104 static void read_uevent(struct interface_data *interface)
106 char *filename, line[128];
107 connman_bool_t found_devtype;
110 if (ether_blacklisted(interface->name) == TRUE) {
111 interface->service_type = CONNMAN_SERVICE_TYPE_UNKNOWN;
112 interface->device_type = CONNMAN_DEVICE_TYPE_UNKNOWN;
114 interface->service_type = CONNMAN_SERVICE_TYPE_ETHERNET;
115 interface->device_type = CONNMAN_DEVICE_TYPE_ETHERNET;
118 filename = g_strdup_printf("/sys/class/net/%s/uevent",
121 f = fopen(filename, "re");
128 found_devtype = FALSE;
129 while (fgets(line, sizeof(line), f)) {
132 pos = strchr(line, '\n');
137 if (strncmp(line, "DEVTYPE=", 8) != 0)
140 found_devtype = TRUE;
142 if (strcmp(line + 8, "wlan") == 0) {
143 interface->service_type = CONNMAN_SERVICE_TYPE_WIFI;
144 interface->device_type = CONNMAN_DEVICE_TYPE_WIFI;
145 } else if (strcmp(line + 8, "wwan") == 0) {
146 interface->service_type = CONNMAN_SERVICE_TYPE_CELLULAR;
147 interface->device_type = CONNMAN_DEVICE_TYPE_CELLULAR;
148 } else if (strcmp(line + 8, "bluetooth") == 0) {
149 interface->service_type = CONNMAN_SERVICE_TYPE_BLUETOOTH;
150 interface->device_type = CONNMAN_DEVICE_TYPE_BLUETOOTH;
151 } else if (strcmp(line + 8, "wimax") == 0) {
152 interface->service_type = CONNMAN_SERVICE_TYPE_WIMAX;
153 interface->device_type = CONNMAN_DEVICE_TYPE_WIMAX;
155 interface->service_type = CONNMAN_SERVICE_TYPE_UNKNOWN;
156 interface->device_type = CONNMAN_DEVICE_TYPE_UNKNOWN;
165 /* We haven't got a DEVTYPE, let's check if it's a wireless device */
166 filename = g_strdup_printf("/sys/class/net/%s/wireless/",
169 f = fopen(filename, "re");
174 interface->service_type = CONNMAN_SERVICE_TYPE_WIFI;
175 interface->device_type = CONNMAN_DEVICE_TYPE_WIFI;
179 enum connman_device_type __connman_rtnl_get_device_type(int index)
181 struct interface_data *interface;
183 interface = g_hash_table_lookup(interface_list,
184 GINT_TO_POINTER(index));
185 if (interface == NULL)
186 return CONNMAN_DEVICE_TYPE_UNKNOWN;
188 return interface->device_type;
192 * connman_rtnl_add_newlink_watch:
193 * @index: network device index
194 * @callback: callback function
195 * @user_data: callback data;
197 * Add a new RTNL watch for newlink events
199 * Returns: %0 on failure and a unique id on success
201 unsigned int connman_rtnl_add_newlink_watch(int index,
202 connman_rtnl_link_cb_t callback, void *user_data)
204 struct watch_data *watch;
206 watch = g_try_new0(struct watch_data, 1);
210 watch->id = ++watch_id;
211 watch->index = index;
213 watch->newlink = callback;
214 watch->user_data = user_data;
216 watch_list = g_slist_prepend(watch_list, watch);
218 DBG("id %d", watch->id);
221 unsigned int flags = __connman_ipconfig_get_flags(index);
224 callback(flags, 0, user_data);
231 * connman_rtnl_remove_watch:
232 * @id: watch identifier
234 * Remove the RTNL watch for the identifier
236 void connman_rtnl_remove_watch(unsigned int id)
245 for (list = watch_list; list; list = list->next) {
246 struct watch_data *watch = list->data;
248 if (watch->id == id) {
249 watch_list = g_slist_remove(watch_list, watch);
256 static void trigger_rtnl(int index, void *user_data)
258 struct connman_rtnl *rtnl = user_data;
261 unsigned short type = __connman_ipconfig_get_type(index);
262 unsigned int flags = __connman_ipconfig_get_flags(index);
264 rtnl->newlink(type, index, flags, 0);
267 if (rtnl->newgateway) {
268 const char *gateway = __connman_ipconfig_get_gateway(index);
271 rtnl->newgateway(index, gateway);
275 static GSList *rtnl_list = NULL;
277 static gint compare_priority(gconstpointer a, gconstpointer b)
279 const struct connman_rtnl *rtnl1 = a;
280 const struct connman_rtnl *rtnl2 = b;
282 return rtnl2->priority - rtnl1->priority;
286 * connman_rtnl_register:
289 * Register a new RTNL module
291 * Returns: %0 on success
293 int connman_rtnl_register(struct connman_rtnl *rtnl)
295 DBG("rtnl %p name %s", rtnl, rtnl->name);
297 rtnl_list = g_slist_insert_sorted(rtnl_list, rtnl,
300 __connman_ipconfig_foreach(trigger_rtnl, rtnl);
306 * connman_rtnl_unregister:
309 * Remove a previously registered RTNL module
311 void connman_rtnl_unregister(struct connman_rtnl *rtnl)
313 DBG("rtnl %p name %s", rtnl, rtnl->name);
315 rtnl_list = g_slist_remove(rtnl_list, rtnl);
318 static const char *operstate2str(unsigned char operstate)
321 case IF_OPER_UNKNOWN:
323 case IF_OPER_NOTPRESENT:
324 return "NOT-PRESENT";
327 case IF_OPER_LOWERLAYERDOWN:
328 return "LOWER-LAYER-DOWN";
329 case IF_OPER_TESTING:
331 case IF_OPER_DORMANT:
340 static void extract_link(struct ifinfomsg *msg, int bytes,
341 struct ether_addr *address, const char **ifname,
342 unsigned int *mtu, unsigned char *operstate,
343 struct rtnl_link_stats *stats)
347 for (attr = IFLA_RTA(msg); RTA_OK(attr, bytes);
348 attr = RTA_NEXT(attr, bytes)) {
349 switch (attr->rta_type) {
352 memcpy(address, RTA_DATA(attr), ETH_ALEN);
356 *ifname = RTA_DATA(attr);
360 *mtu = *((unsigned int *) RTA_DATA(attr));
364 memcpy(stats, RTA_DATA(attr),
365 sizeof(struct rtnl_link_stats));
368 if (operstate != NULL)
369 *operstate = *((unsigned char *) RTA_DATA(attr));
377 static void process_newlink(unsigned short type, int index, unsigned flags,
378 unsigned change, struct ifinfomsg *msg, int bytes)
380 struct ether_addr address = {{ 0, 0, 0, 0, 0, 0 }};
381 struct ether_addr compare = {{ 0, 0, 0, 0, 0, 0 }};
382 struct rtnl_link_stats stats;
383 unsigned char operstate = 0xff;
384 const char *ifname = NULL;
385 unsigned int mtu = 0;
386 char ident[13], str[18];
389 memset(&stats, 0, sizeof(stats));
390 extract_link(msg, bytes, &address, &ifname, &mtu, &operstate, &stats);
392 snprintf(ident, 13, "%02x%02x%02x%02x%02x%02x",
393 address.ether_addr_octet[0],
394 address.ether_addr_octet[1],
395 address.ether_addr_octet[2],
396 address.ether_addr_octet[3],
397 address.ether_addr_octet[4],
398 address.ether_addr_octet[5]);
400 snprintf(str, 18, "%02X:%02X:%02X:%02X:%02X:%02X",
401 address.ether_addr_octet[0],
402 address.ether_addr_octet[1],
403 address.ether_addr_octet[2],
404 address.ether_addr_octet[3],
405 address.ether_addr_octet[4],
406 address.ether_addr_octet[5]);
410 case ARPHRD_LOOPBACK:
411 case ARPHDR_PHONET_PIPE:
413 __connman_ipconfig_newlink(index, type, flags,
418 if (memcmp(&address, &compare, ETH_ALEN) != 0)
419 connman_info("%s {newlink} index %d address %s mtu %u",
420 ifname, index, str, mtu);
422 if (operstate != 0xff)
423 connman_info("%s {newlink} index %d operstate %u <%s>",
424 ifname, index, operstate,
425 operstate2str(operstate));
427 if (g_hash_table_lookup(interface_list,
428 GINT_TO_POINTER(index)) == NULL) {
429 struct interface_data *interface;
431 interface = g_new0(struct interface_data, 1);
432 interface->index = index;
433 interface->name = g_strdup(ifname);
434 interface->ident = g_strdup(ident);
436 g_hash_table_insert(interface_list,
437 GINT_TO_POINTER(index), interface);
439 if (type == ARPHRD_ETHER)
440 read_uevent(interface);
442 __connman_technology_add_interface(interface->service_type,
443 interface->index, interface->name, interface->ident);
446 for (list = rtnl_list; list; list = list->next) {
447 struct connman_rtnl *rtnl = list->data;
450 rtnl->newlink(type, index, flags, change);
453 for (list = watch_list; list; list = list->next) {
454 struct watch_data *watch = list->data;
456 if (watch->index != index)
460 watch->newlink(flags, change, watch->user_data);
464 static void process_dellink(unsigned short type, int index, unsigned flags,
465 unsigned change, struct ifinfomsg *msg, int bytes)
467 struct rtnl_link_stats stats;
468 unsigned char operstate = 0xff;
469 const char *ifname = NULL;
472 memset(&stats, 0, sizeof(stats));
473 extract_link(msg, bytes, NULL, &ifname, NULL, &operstate, &stats);
475 if (operstate != 0xff)
476 connman_info("%s {dellink} index %d operstate %u <%s>",
477 ifname, index, operstate,
478 operstate2str(operstate));
480 for (list = rtnl_list; list; list = list->next) {
481 struct connman_rtnl *rtnl = list->data;
484 rtnl->dellink(type, index, flags, change);
489 case ARPHRD_LOOPBACK:
491 __connman_ipconfig_dellink(index, &stats);
495 g_hash_table_remove(interface_list, GINT_TO_POINTER(index));
498 static void extract_ipv4_addr(struct ifaddrmsg *msg, int bytes,
500 struct in_addr *local,
501 struct in_addr *address,
502 struct in_addr *broadcast)
506 for (attr = IFA_RTA(msg); RTA_OK(attr, bytes);
507 attr = RTA_NEXT(attr, bytes)) {
508 switch (attr->rta_type) {
511 *address = *((struct in_addr *) RTA_DATA(attr));
515 *local = *((struct in_addr *) RTA_DATA(attr));
518 if (broadcast != NULL)
519 *broadcast = *((struct in_addr *) RTA_DATA(attr));
523 *label = RTA_DATA(attr);
529 static void extract_ipv6_addr(struct ifaddrmsg *msg, int bytes,
530 struct in6_addr *addr,
531 struct in6_addr *local)
535 for (attr = IFA_RTA(msg); RTA_OK(attr, bytes);
536 attr = RTA_NEXT(attr, bytes)) {
537 switch (attr->rta_type) {
540 *addr = *((struct in6_addr *) RTA_DATA(attr));
544 *local = *((struct in6_addr *) RTA_DATA(attr));
550 static void process_newaddr(unsigned char family, unsigned char prefixlen,
551 int index, struct ifaddrmsg *msg, int bytes)
553 const char *label = NULL;
555 char ip_string[INET6_ADDRSTRLEN];
557 if (family != AF_INET && family != AF_INET6)
560 if (family == AF_INET) {
561 struct in_addr ipv4_addr = { INADDR_ANY };
563 extract_ipv4_addr(msg, bytes, &label, &ipv4_addr, NULL, NULL);
565 } else if (family == AF_INET6) {
566 struct in6_addr ipv6_address, ipv6_local;
568 extract_ipv6_addr(msg, bytes, &ipv6_address, &ipv6_local);
569 if (IN6_IS_ADDR_LINKLOCAL(&ipv6_address))
575 if (inet_ntop(family, src, ip_string, INET6_ADDRSTRLEN) == NULL)
578 __connman_ipconfig_newaddr(index, family, label,
579 prefixlen, ip_string);
582 static void process_deladdr(unsigned char family, unsigned char prefixlen,
583 int index, struct ifaddrmsg *msg, int bytes)
585 const char *label = NULL;
587 char ip_string[INET6_ADDRSTRLEN];
589 if (family != AF_INET && family != AF_INET6)
592 if (family == AF_INET) {
593 struct in_addr ipv4_addr = { INADDR_ANY };
595 extract_ipv4_addr(msg, bytes, &label, &ipv4_addr, NULL, NULL);
597 } else if (family == AF_INET6) {
598 struct in6_addr ipv6_address, ipv6_local;
600 extract_ipv6_addr(msg, bytes, &ipv6_address, &ipv6_local);
601 if (IN6_IS_ADDR_LINKLOCAL(&ipv6_address))
607 if (inet_ntop(family, src, ip_string, INET6_ADDRSTRLEN) == NULL)
610 __connman_ipconfig_deladdr(index, family, label,
611 prefixlen, ip_string);
614 static void extract_route(struct rtmsg *msg, int bytes, int *index,
616 struct in_addr *gateway)
620 for (attr = RTM_RTA(msg); RTA_OK(attr, bytes);
621 attr = RTA_NEXT(attr, bytes)) {
622 switch (attr->rta_type) {
625 *dst = *((struct in_addr *) RTA_DATA(attr));
629 *gateway = *((struct in_addr *) RTA_DATA(attr));
633 *index = *((int *) RTA_DATA(attr));
639 static void process_newroute(unsigned char family, unsigned char scope,
640 struct rtmsg *msg, int bytes)
643 struct in_addr dst = { INADDR_ANY }, gateway = { INADDR_ANY };
644 char dststr[16], gatewaystr[16];
647 if (family != AF_INET)
650 extract_route(msg, bytes, &index, &dst, &gateway);
652 inet_ntop(family, &dst, dststr, sizeof(dststr));
653 inet_ntop(family, &gateway, gatewaystr, sizeof(gatewaystr));
655 __connman_ipconfig_newroute(index, family, scope, dststr, gatewaystr);
657 /* skip host specific routes */
658 if (scope != RT_SCOPE_UNIVERSE &&
659 !(scope == RT_SCOPE_LINK && dst.s_addr == INADDR_ANY))
662 if (dst.s_addr != INADDR_ANY)
665 for (list = rtnl_list; list; list = list->next) {
666 struct connman_rtnl *rtnl = list->data;
668 if (rtnl->newgateway)
669 rtnl->newgateway(index, gatewaystr);
673 static void process_delroute(unsigned char family, unsigned char scope,
674 struct rtmsg *msg, int bytes)
677 struct in_addr dst = { INADDR_ANY }, gateway = { INADDR_ANY };
678 char dststr[16], gatewaystr[16];
681 if (family != AF_INET)
684 extract_route(msg, bytes, &index, &dst, &gateway);
686 inet_ntop(family, &dst, dststr, sizeof(dststr));
687 inet_ntop(family, &gateway, gatewaystr, sizeof(gatewaystr));
689 __connman_ipconfig_delroute(index, family, scope, dststr, gatewaystr);
691 /* skip host specific routes */
692 if (scope != RT_SCOPE_UNIVERSE &&
693 !(scope == RT_SCOPE_LINK && dst.s_addr == INADDR_ANY))
696 if (dst.s_addr != INADDR_ANY)
699 for (list = rtnl_list; list; list = list->next) {
700 struct connman_rtnl *rtnl = list->data;
702 if (rtnl->delgateway)
703 rtnl->delgateway(index, gatewaystr);
707 static inline void print_ether(struct rtattr *attr, const char *name)
709 int len = (int) RTA_PAYLOAD(attr);
711 if (len == ETH_ALEN) {
712 struct ether_addr eth;
713 memcpy(ð, RTA_DATA(attr), ETH_ALEN);
714 print(" attr %s (len %d) %s\n", name, len, ether_ntoa(ð));
716 print(" attr %s (len %d)\n", name, len);
719 static inline void print_inet(struct rtattr *attr, const char *name,
720 unsigned char family)
722 int len = (int) RTA_PAYLOAD(attr);
724 if (family == AF_INET && len == sizeof(struct in_addr)) {
726 addr = *((struct in_addr *) RTA_DATA(attr));
727 print(" attr %s (len %d) %s\n", name, len, inet_ntoa(addr));
729 print(" attr %s (len %d)\n", name, len);
732 static inline void print_string(struct rtattr *attr, const char *name)
734 print(" attr %s (len %d) %s\n", name, (int) RTA_PAYLOAD(attr),
735 (char *) RTA_DATA(attr));
738 static inline void print_byte(struct rtattr *attr, const char *name)
740 print(" attr %s (len %d) 0x%02x\n", name, (int) RTA_PAYLOAD(attr),
741 *((unsigned char *) RTA_DATA(attr)));
744 static inline void print_integer(struct rtattr *attr, const char *name)
746 print(" attr %s (len %d) %d\n", name, (int) RTA_PAYLOAD(attr),
747 *((int *) RTA_DATA(attr)));
750 static inline void print_attr(struct rtattr *attr, const char *name)
752 int len = (int) RTA_PAYLOAD(attr);
755 print(" attr %s (len %d)\n", name, len);
757 print(" attr %d (len %d)\n", attr->rta_type, len);
760 static void rtnl_link(struct nlmsghdr *hdr)
762 struct ifinfomsg *msg;
766 msg = (struct ifinfomsg *) NLMSG_DATA(hdr);
767 bytes = IFLA_PAYLOAD(hdr);
769 print("ifi_index %d ifi_flags 0x%04x", msg->ifi_index, msg->ifi_flags);
771 for (attr = IFLA_RTA(msg); RTA_OK(attr, bytes);
772 attr = RTA_NEXT(attr, bytes)) {
773 switch (attr->rta_type) {
775 print_ether(attr, "address");
778 print_ether(attr, "broadcast");
781 print_string(attr, "ifname");
784 print_integer(attr, "mtu");
787 print_attr(attr, "link");
790 print_attr(attr, "qdisc");
793 print_attr(attr, "stats");
796 print_attr(attr, "cost");
799 print_attr(attr, "priority");
802 print_attr(attr, "master");
805 print_attr(attr, "wireless");
808 print_attr(attr, "protinfo");
811 print_integer(attr, "txqlen");
814 print_attr(attr, "map");
817 print_attr(attr, "weight");
820 print_byte(attr, "operstate");
823 print_byte(attr, "linkmode");
826 print_attr(attr, NULL);
832 static void rtnl_newlink(struct nlmsghdr *hdr)
834 struct ifinfomsg *msg = (struct ifinfomsg *) NLMSG_DATA(hdr);
838 process_newlink(msg->ifi_type, msg->ifi_index, msg->ifi_flags,
839 msg->ifi_change, msg, IFA_PAYLOAD(hdr));
842 static void rtnl_dellink(struct nlmsghdr *hdr)
844 struct ifinfomsg *msg = (struct ifinfomsg *) NLMSG_DATA(hdr);
848 process_dellink(msg->ifi_type, msg->ifi_index, msg->ifi_flags,
849 msg->ifi_change, msg, IFA_PAYLOAD(hdr));
852 static void rtnl_addr(struct nlmsghdr *hdr)
854 struct ifaddrmsg *msg;
858 msg = (struct ifaddrmsg *) NLMSG_DATA(hdr);
859 bytes = IFA_PAYLOAD(hdr);
861 print("ifa_family %d ifa_index %d", msg->ifa_family, msg->ifa_index);
863 for (attr = IFA_RTA(msg); RTA_OK(attr, bytes);
864 attr = RTA_NEXT(attr, bytes)) {
865 switch (attr->rta_type) {
867 print_inet(attr, "address", msg->ifa_family);
870 print_inet(attr, "local", msg->ifa_family);
873 print_string(attr, "label");
876 print_inet(attr, "broadcast", msg->ifa_family);
879 print_attr(attr, "anycast");
882 print_attr(attr, "cacheinfo");
885 print_attr(attr, "multicast");
888 print_attr(attr, NULL);
894 static void rtnl_newaddr(struct nlmsghdr *hdr)
896 struct ifaddrmsg *msg = (struct ifaddrmsg *) NLMSG_DATA(hdr);
900 process_newaddr(msg->ifa_family, msg->ifa_prefixlen, msg->ifa_index,
901 msg, IFA_PAYLOAD(hdr));
904 static void rtnl_deladdr(struct nlmsghdr *hdr)
906 struct ifaddrmsg *msg = (struct ifaddrmsg *) NLMSG_DATA(hdr);
910 process_deladdr(msg->ifa_family, msg->ifa_prefixlen, msg->ifa_index,
911 msg, IFA_PAYLOAD(hdr));
914 static void rtnl_route(struct nlmsghdr *hdr)
920 msg = (struct rtmsg *) NLMSG_DATA(hdr);
921 bytes = RTM_PAYLOAD(hdr);
923 print("rtm_family %d rtm_table %d rtm_protocol %d",
924 msg->rtm_family, msg->rtm_table, msg->rtm_protocol);
925 print("rtm_scope %d rtm_type %d rtm_flags 0x%04x",
926 msg->rtm_scope, msg->rtm_type, msg->rtm_flags);
928 for (attr = RTM_RTA(msg); RTA_OK(attr, bytes);
929 attr = RTA_NEXT(attr, bytes)) {
930 switch (attr->rta_type) {
932 print_inet(attr, "dst", msg->rtm_family);
935 print_inet(attr, "src", msg->rtm_family);
938 print_string(attr, "iif");
941 print_integer(attr, "oif");
944 print_inet(attr, "gateway", msg->rtm_family);
947 print_attr(attr, "priority");
950 print_inet(attr, "prefsrc", msg->rtm_family);
953 print_attr(attr, "metrics");
956 print_integer(attr, "table");
959 print_attr(attr, NULL);
965 static connman_bool_t is_route_rtmsg(struct rtmsg *msg)
968 if (msg->rtm_table != RT_TABLE_MAIN)
971 if (msg->rtm_protocol != RTPROT_BOOT &&
972 msg->rtm_protocol != RTPROT_KERNEL)
975 if (msg->rtm_type != RTN_UNICAST)
981 static void rtnl_newroute(struct nlmsghdr *hdr)
983 struct rtmsg *msg = (struct rtmsg *) NLMSG_DATA(hdr);
987 if (is_route_rtmsg(msg))
988 process_newroute(msg->rtm_family, msg->rtm_scope,
989 msg, RTM_PAYLOAD(hdr));
992 static void rtnl_delroute(struct nlmsghdr *hdr)
994 struct rtmsg *msg = (struct rtmsg *) NLMSG_DATA(hdr);
998 if (is_route_rtmsg(msg))
999 process_delroute(msg->rtm_family, msg->rtm_scope,
1000 msg, RTM_PAYLOAD(hdr));
1003 static const char *type2string(uint16_t type)
1035 static GIOChannel *channel = NULL;
1037 struct rtnl_request {
1038 struct nlmsghdr hdr;
1039 struct rtgenmsg msg;
1041 #define RTNL_REQUEST_SIZE (sizeof(struct nlmsghdr) + sizeof(struct rtgenmsg))
1043 static GSList *request_list = NULL;
1044 static guint32 request_seq = 0;
1046 static struct rtnl_request *find_request(guint32 seq)
1050 for (list = request_list; list; list = list->next) {
1051 struct rtnl_request *req = list->data;
1053 if (req->hdr.nlmsg_seq == seq)
1060 static int send_request(struct rtnl_request *req)
1062 struct sockaddr_nl addr;
1065 DBG("%s len %d type %d flags 0x%04x seq %d",
1066 type2string(req->hdr.nlmsg_type),
1067 req->hdr.nlmsg_len, req->hdr.nlmsg_type,
1068 req->hdr.nlmsg_flags, req->hdr.nlmsg_seq);
1070 sk = g_io_channel_unix_get_fd(channel);
1072 memset(&addr, 0, sizeof(addr));
1073 addr.nl_family = AF_NETLINK;
1075 return sendto(sk, req, req->hdr.nlmsg_len, 0,
1076 (struct sockaddr *) &addr, sizeof(addr));
1079 static int queue_request(struct rtnl_request *req)
1081 request_list = g_slist_append(request_list, req);
1083 if (g_slist_length(request_list) > 1)
1086 return send_request(req);
1089 static int process_response(guint32 seq)
1091 struct rtnl_request *req;
1095 req = find_request(seq);
1097 request_list = g_slist_remove(request_list, req);
1101 req = g_slist_nth_data(request_list, 0);
1105 return send_request(req);
1108 static void rtnl_message(void *buf, size_t len)
1110 DBG("buf %p len %zd", buf, len);
1113 struct nlmsghdr *hdr = buf;
1114 struct nlmsgerr *err;
1116 if (!NLMSG_OK(hdr, len))
1119 DBG("%s len %d type %d flags 0x%04x seq %d",
1120 type2string(hdr->nlmsg_type),
1121 hdr->nlmsg_len, hdr->nlmsg_type,
1122 hdr->nlmsg_flags, hdr->nlmsg_seq);
1124 switch (hdr->nlmsg_type) {
1129 process_response(hdr->nlmsg_seq);
1132 err = NLMSG_DATA(hdr);
1133 DBG("error %d (%s)", -err->error,
1134 strerror(-err->error));
1156 len -= hdr->nlmsg_len;
1157 buf += hdr->nlmsg_len;
1161 static gboolean netlink_event(GIOChannel *chan,
1162 GIOCondition cond, gpointer data)
1164 unsigned char buf[4096];
1168 if (cond & (G_IO_NVAL | G_IO_HUP | G_IO_ERR))
1171 memset(buf, 0, sizeof(buf));
1173 err = g_io_channel_read(chan, (gchar *) buf, sizeof(buf), &len);
1175 if (err == G_IO_ERROR_AGAIN)
1180 rtnl_message(buf, len);
1185 static int send_getlink(void)
1187 struct rtnl_request *req;
1191 req = g_try_malloc0(RTNL_REQUEST_SIZE);
1195 req->hdr.nlmsg_len = RTNL_REQUEST_SIZE;
1196 req->hdr.nlmsg_type = RTM_GETLINK;
1197 req->hdr.nlmsg_flags = NLM_F_REQUEST | NLM_F_DUMP;
1198 req->hdr.nlmsg_pid = 0;
1199 req->hdr.nlmsg_seq = request_seq++;
1200 req->msg.rtgen_family = AF_INET;
1202 return queue_request(req);
1205 static int send_getaddr(void)
1207 struct rtnl_request *req;
1211 req = g_try_malloc0(RTNL_REQUEST_SIZE);
1215 req->hdr.nlmsg_len = RTNL_REQUEST_SIZE;
1216 req->hdr.nlmsg_type = RTM_GETADDR;
1217 req->hdr.nlmsg_flags = NLM_F_REQUEST | NLM_F_DUMP;
1218 req->hdr.nlmsg_pid = 0;
1219 req->hdr.nlmsg_seq = request_seq++;
1220 req->msg.rtgen_family = AF_INET;
1222 return queue_request(req);
1225 static int send_getroute(void)
1227 struct rtnl_request *req;
1231 req = g_try_malloc0(RTNL_REQUEST_SIZE);
1235 req->hdr.nlmsg_len = RTNL_REQUEST_SIZE;
1236 req->hdr.nlmsg_type = RTM_GETROUTE;
1237 req->hdr.nlmsg_flags = NLM_F_REQUEST | NLM_F_DUMP;
1238 req->hdr.nlmsg_pid = 0;
1239 req->hdr.nlmsg_seq = request_seq++;
1240 req->msg.rtgen_family = AF_INET;
1242 return queue_request(req);
1245 static gboolean update_timeout_cb(gpointer user_data)
1247 __connman_rtnl_request_update();
1252 static void update_interval_callback(guint min)
1254 if (update_timeout > 0)
1255 g_source_remove(update_timeout);
1257 if (min < G_MAXUINT) {
1258 update_interval = min;
1259 update_timeout = g_timeout_add_seconds(update_interval,
1260 update_timeout_cb, NULL);
1263 update_interval = G_MAXUINT;
1267 static gint compare_interval(gconstpointer a, gconstpointer b)
1269 guint val_a = GPOINTER_TO_UINT(a);
1270 guint val_b = GPOINTER_TO_UINT(b);
1272 return val_a - val_b;
1275 unsigned int __connman_rtnl_update_interval_add(unsigned int interval)
1282 update_list = g_slist_insert_sorted(update_list,
1283 GUINT_TO_POINTER(interval), compare_interval);
1285 min = GPOINTER_TO_UINT(g_slist_nth_data(update_list, 0));
1286 if (min < update_interval) {
1287 update_interval_callback(min);
1288 __connman_rtnl_request_update();
1291 return update_interval;
1294 unsigned int __connman_rtnl_update_interval_remove(unsigned int interval)
1296 guint min = G_MAXUINT;
1301 update_list = g_slist_remove(update_list, GINT_TO_POINTER(interval));
1303 if (update_list != NULL)
1304 min = GPOINTER_TO_UINT(g_slist_nth_data(update_list, 0));
1306 if (min > update_interval)
1307 update_interval_callback(min);
1312 int __connman_rtnl_request_update(void)
1314 return send_getlink();
1317 int __connman_rtnl_init(void)
1319 struct sockaddr_nl addr;
1324 interface_list = g_hash_table_new_full(g_direct_hash, g_direct_equal,
1325 NULL, free_interface);
1327 sk = socket(PF_NETLINK, SOCK_DGRAM, NETLINK_ROUTE);
1331 memset(&addr, 0, sizeof(addr));
1332 addr.nl_family = AF_NETLINK;
1333 addr.nl_groups = RTMGRP_LINK | RTMGRP_IPV4_IFADDR | RTMGRP_IPV4_ROUTE |
1334 RTMGRP_IPV6_IFADDR | RTMGRP_IPV6_ROUTE;
1336 if (bind(sk, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
1341 channel = g_io_channel_unix_new(sk);
1342 g_io_channel_set_close_on_unref(channel, TRUE);
1344 g_io_add_watch(channel, G_IO_IN | G_IO_NVAL | G_IO_HUP | G_IO_ERR,
1345 netlink_event, NULL);
1350 void __connman_rtnl_start(void)
1359 void __connman_rtnl_cleanup(void)
1365 for (list = watch_list; list; list = list->next) {
1366 struct watch_data *watch = list->data;
1368 DBG("removing watch %d", watch->id);
1374 g_slist_free(watch_list);
1377 g_slist_free(update_list);
1380 for (list = request_list; list; list = list->next) {
1381 struct rtnl_request *req = list->data;
1383 DBG("%s len %d type %d flags 0x%04x seq %d",
1384 type2string(req->hdr.nlmsg_type),
1385 req->hdr.nlmsg_len, req->hdr.nlmsg_type,
1386 req->hdr.nlmsg_flags, req->hdr.nlmsg_seq);
1392 g_slist_free(request_list);
1393 request_list = NULL;
1395 g_io_channel_shutdown(channel, TRUE, NULL);
1396 g_io_channel_unref(channel);
1400 g_hash_table_destroy(interface_list);