rtnl: Use filtered devices to determine blacklisted devices
[framework/connectivity/connman.git] / src / rtnl.c
index 785a1de..a6ff84b 100644 (file)
@@ -2,7 +2,7 @@
  *
  *  Connection Manager
  *
- *  Copyright (C) 2007-2009  Intel Corporation. All rights reserved.
+ *  Copyright (C) 2007-2012  Intel Corporation. All rights reserved.
  *
  *  This program is free software; you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License version 2 as
 #include <config.h>
 #endif
 
+#include <errno.h>
+#include <stdio.h>
 #include <unistd.h>
 #include <string.h>
 #include <sys/socket.h>
+#include <sys/ioctl.h>
 #include <arpa/inet.h>
-
+#include <netinet/ether.h>
+#include <netinet/icmp6.h>
+#include <net/if_arp.h>
 #include <linux/if.h>
-#include <linux/if_arp.h>
 #include <linux/netlink.h>
 #include <linux/rtnetlink.h>
+#include <linux/wireless.h>
 
 #include <glib.h>
 
 #include "connman.h"
 
-#define print(arg...) do { } while (0)
+#ifndef ARPHDR_PHONET_PIPE
+#define ARPHDR_PHONET_PIPE (821)
+#endif
+
+#define print(arg...) do { if (0) connman_info(arg); } while (0)
 //#define print(arg...) connman_info(arg)
 
 struct watch_data {
@@ -50,26 +59,150 @@ struct watch_data {
 static GSList *watch_list = NULL;
 static unsigned int watch_id = 0;
 
-static GHashTable *ipconfig_hash = NULL;
-static GSList *ipconfig_list = NULL;
+static GSList *update_list = NULL;
+static guint update_interval = G_MAXUINT;
+static guint update_timeout = 0;
+
+struct interface_data {
+       int index;
+       char *name;
+       char *ident;
+       enum connman_service_type service_type;
+       enum connman_device_type device_type;
+};
+
+static GHashTable *interface_list = NULL;
 
-static void register_ipconfig(struct connman_ipconfig *ipconfig)
+static void free_interface(gpointer data)
 {
-       ipconfig_list = g_slist_append(ipconfig_list, ipconfig);
+       struct interface_data *interface = data;
+
+       __connman_technology_remove_interface(interface->service_type,
+                       interface->index, interface->name, interface->ident);
+
+       g_free(interface->ident);
+       g_free(interface->name);
+       g_free(interface);
 }
 
-static void unregister_ipconfig(struct connman_ipconfig *ipconfig)
+static connman_bool_t ether_blacklisted(const char *name)
 {
-       ipconfig_list = g_slist_remove(ipconfig_list, ipconfig);
+       if (name == NULL)
+               return TRUE;
+
+       if (__connman_device_isfiltered(name) == TRUE)
+               return TRUE;
+
+       return FALSE;
 }
 
-static void free_ipconfig(gpointer data)
+static connman_bool_t wext_interface(char *ifname)
 {
-       struct connman_ipconfig *ipconfig = data;
+       struct iwreq wrq;
+       int fd, err;
+
+       fd = socket(PF_INET, SOCK_DGRAM | SOCK_CLOEXEC, 0);
+       if (fd < 0)
+               return FALSE;
+
+       memset(&wrq, 0, sizeof(wrq));
+       strncpy(wrq.ifr_name, ifname, IFNAMSIZ);
+
+       err = ioctl(fd, SIOCGIWNAME, &wrq);
 
-       unregister_ipconfig(ipconfig);
+       close(fd);
 
-       connman_ipconfig_unref(ipconfig);
+       if (err < 0)
+               return FALSE;
+
+       return TRUE;
+}
+
+static void read_uevent(struct interface_data *interface)
+{
+       char *filename, line[128];
+       connman_bool_t found_devtype;
+       FILE *f;
+
+       if (ether_blacklisted(interface->name) == TRUE) {
+               interface->service_type = CONNMAN_SERVICE_TYPE_UNKNOWN;
+               interface->device_type = CONNMAN_DEVICE_TYPE_UNKNOWN;
+       } else {
+               interface->service_type = CONNMAN_SERVICE_TYPE_ETHERNET;
+               interface->device_type = CONNMAN_DEVICE_TYPE_ETHERNET;
+       }
+
+       filename = g_strdup_printf("/sys/class/net/%s/uevent",
+                                               interface->name);
+
+       f = fopen(filename, "re");
+
+       g_free(filename);
+
+       if (f == NULL)
+               return;
+
+       found_devtype = FALSE;
+       while (fgets(line, sizeof(line), f)) {
+               char *pos;
+
+               pos = strchr(line, '\n');
+               if (pos == NULL)
+                       continue;
+               pos[0] = '\0';
+
+               if (strncmp(line, "DEVTYPE=", 8) != 0)
+                       continue;
+
+               found_devtype = TRUE;
+
+               if (strcmp(line + 8, "wlan") == 0) {
+                       interface->service_type = CONNMAN_SERVICE_TYPE_WIFI;
+                       interface->device_type = CONNMAN_DEVICE_TYPE_WIFI;
+               } else if (strcmp(line + 8, "wwan") == 0) {
+                       interface->service_type = CONNMAN_SERVICE_TYPE_CELLULAR;
+                       interface->device_type = CONNMAN_DEVICE_TYPE_CELLULAR;
+               } else if (strcmp(line + 8, "bluetooth") == 0) {
+                       interface->service_type = CONNMAN_SERVICE_TYPE_BLUETOOTH;
+                       interface->device_type = CONNMAN_DEVICE_TYPE_BLUETOOTH;
+               } else if (strcmp(line + 8, "wimax") == 0) {
+                       interface->service_type = CONNMAN_SERVICE_TYPE_WIMAX;
+                       interface->device_type = CONNMAN_DEVICE_TYPE_WIMAX;
+               } else if (strcmp(line + 8, "gadget") == 0) {
+                       interface->service_type = CONNMAN_SERVICE_TYPE_GADGET;
+                       interface->device_type = CONNMAN_DEVICE_TYPE_GADGET;
+
+               } else {
+                       interface->service_type = CONNMAN_SERVICE_TYPE_UNKNOWN;
+                       interface->device_type = CONNMAN_DEVICE_TYPE_UNKNOWN;
+               }
+       }
+
+       fclose(f);
+
+       if (found_devtype)
+               return;
+
+       /* We haven't got a DEVTYPE, let's check if it's a wireless device */
+       if (wext_interface(interface->name)) {
+               interface->service_type = CONNMAN_SERVICE_TYPE_WIFI;
+               interface->device_type = CONNMAN_DEVICE_TYPE_WIFI;
+
+               connman_error("%s runs an unsupported 802.11 driver",
+                               interface->name);
+       }
+}
+
+enum connman_device_type __connman_rtnl_get_device_type(int index)
+{
+       struct interface_data *interface;
+
+       interface = g_hash_table_lookup(interface_list,
+                                       GINT_TO_POINTER(index));
+       if (interface == NULL)
+               return CONNMAN_DEVICE_TYPE_UNKNOWN;
+
+       return interface->device_type;
 }
 
 /**
@@ -85,7 +218,6 @@ static void free_ipconfig(gpointer data)
 unsigned int connman_rtnl_add_newlink_watch(int index,
                        connman_rtnl_link_cb_t callback, void *user_data)
 {
-       struct connman_ipconfig *ipconfig;
        struct watch_data *watch;
 
        watch = g_try_new0(struct watch_data, 1);
@@ -102,11 +234,10 @@ unsigned int connman_rtnl_add_newlink_watch(int index,
 
        DBG("id %d", watch->id);
 
-       ipconfig = g_hash_table_lookup(ipconfig_hash, GINT_TO_POINTER(index));
-       if (ipconfig != NULL) {
-               unsigned int flags = __connman_ipconfig_get_flags(ipconfig);
+       if (callback) {
+               unsigned int flags = __connman_ipconfig_get_flags_from_index(index);
 
-               if (callback)
+               if (flags > 0)
                        callback(flags, 0, user_data);
        }
 
@@ -139,21 +270,25 @@ void connman_rtnl_remove_watch(unsigned int id)
        }
 }
 
-static void trigger_newlink(gpointer key, gpointer value, gpointer user_data)
+static void trigger_rtnl(int index, void *user_data)
 {
        struct connman_rtnl *rtnl = user_data;
-       struct connman_ipconfig *ipconfig = value;
-       int index = GPOINTER_TO_INT(key);
-
-       if (index < 0 || ipconfig == NULL)
-               return;
 
        if (rtnl->newlink) {
-               unsigned short type = __connman_ipconfig_get_type(ipconfig);
-               unsigned int flags = __connman_ipconfig_get_flags(ipconfig);
+               unsigned short type = __connman_ipconfig_get_type_from_index(index);
+               unsigned int flags = __connman_ipconfig_get_flags_from_index(index);
 
                rtnl->newlink(type, index, flags, 0);
        }
+
+       if (rtnl->newgateway) {
+               const char *gateway =
+                       __connman_ipconfig_get_gateway_from_index(index,
+                                       CONNMAN_IPCONFIG_TYPE_ALL);
+
+               if (gateway != NULL)
+                       rtnl->newgateway(index, gateway);
+       }
 }
 
 static GSList *rtnl_list = NULL;
@@ -181,7 +316,7 @@ int connman_rtnl_register(struct connman_rtnl *rtnl)
        rtnl_list = g_slist_insert_sorted(rtnl_list, rtnl,
                                                        compare_priority);
 
-       g_hash_table_foreach(ipconfig_hash, trigger_newlink, rtnl);
+       __connman_ipconfig_foreach(trigger_rtnl, rtnl);
 
        return 0;
 }
@@ -199,34 +334,133 @@ void connman_rtnl_unregister(struct connman_rtnl *rtnl)
        rtnl_list = g_slist_remove(rtnl_list, rtnl);
 }
 
-static void process_newlink(unsigned short type, int index,
-                                       unsigned flags, unsigned change)
+static const char *operstate2str(unsigned char operstate)
+{
+       switch (operstate) {
+       case IF_OPER_UNKNOWN:
+               return "UNKNOWN";
+       case IF_OPER_NOTPRESENT:
+               return "NOT-PRESENT";
+       case IF_OPER_DOWN:
+               return "DOWN";
+       case IF_OPER_LOWERLAYERDOWN:
+               return "LOWER-LAYER-DOWN";
+       case IF_OPER_TESTING:
+               return "TESTING";
+       case IF_OPER_DORMANT:
+               return "DORMANT";
+       case IF_OPER_UP:
+               return "UP";
+       }
+
+       return "";
+}
+
+static void extract_link(struct ifinfomsg *msg, int bytes,
+                               struct ether_addr *address, const char **ifname,
+                               unsigned int *mtu, unsigned char *operstate,
+                                               struct rtnl_link_stats *stats)
+{
+       struct rtattr *attr;
+
+       for (attr = IFLA_RTA(msg); RTA_OK(attr, bytes);
+                                       attr = RTA_NEXT(attr, bytes)) {
+               switch (attr->rta_type) {
+               case IFLA_ADDRESS:
+                       if (address != NULL)
+                               memcpy(address, RTA_DATA(attr), ETH_ALEN);
+                       break;
+               case IFLA_IFNAME:
+                       if (ifname != NULL)
+                               *ifname = RTA_DATA(attr);
+                       break;
+               case IFLA_MTU:
+                       if (mtu != NULL)
+                               *mtu = *((unsigned int *) RTA_DATA(attr));
+                       break;
+               case IFLA_STATS:
+                       if (stats != NULL)
+                               memcpy(stats, RTA_DATA(attr),
+                                       sizeof(struct rtnl_link_stats));
+                       break;
+               case IFLA_OPERSTATE:
+                       if (operstate != NULL)
+                               *operstate = *((unsigned char *) RTA_DATA(attr));
+                       break;
+               case IFLA_LINKMODE:
+                       break;
+               }
+       }
+}
+
+static void process_newlink(unsigned short type, int index, unsigned flags,
+                       unsigned change, struct ifinfomsg *msg, int bytes)
 {
-       struct connman_ipconfig *ipconfig;
+       struct ether_addr address = {{ 0, 0, 0, 0, 0, 0 }};
+       struct ether_addr compare = {{ 0, 0, 0, 0, 0, 0 }};
+       struct rtnl_link_stats stats;
+       unsigned char operstate = 0xff;
+       struct interface_data *interface;
+       const char *ifname = NULL;
+       unsigned int mtu = 0;
+       char ident[13], str[18];
        GSList *list;
 
+       memset(&stats, 0, sizeof(stats));
+       extract_link(msg, bytes, &address, &ifname, &mtu, &operstate, &stats);
+
+       snprintf(ident, 13, "%02x%02x%02x%02x%02x%02x",
+                                               address.ether_addr_octet[0],
+                                               address.ether_addr_octet[1],
+                                               address.ether_addr_octet[2],
+                                               address.ether_addr_octet[3],
+                                               address.ether_addr_octet[4],
+                                               address.ether_addr_octet[5]);
+
+       snprintf(str, 18, "%02X:%02X:%02X:%02X:%02X:%02X",
+                                               address.ether_addr_octet[0],
+                                               address.ether_addr_octet[1],
+                                               address.ether_addr_octet[2],
+                                               address.ether_addr_octet[3],
+                                               address.ether_addr_octet[4],
+                                               address.ether_addr_octet[5]);
+
        switch (type) {
        case ARPHRD_ETHER:
        case ARPHRD_LOOPBACK:
+       case ARPHDR_PHONET_PIPE:
        case ARPHRD_NONE:
-               ipconfig = g_hash_table_lookup(ipconfig_hash,
-                                               GINT_TO_POINTER(index));
-               if (ipconfig == NULL) {
-                       ipconfig = connman_ipconfig_create(index);
-                       if (ipconfig != NULL) {
-                               g_hash_table_insert(ipconfig_hash,
-                                       GINT_TO_POINTER(index), ipconfig);
-
-                               register_ipconfig(ipconfig);
-                       }
-               }
-
-               if (ipconfig != NULL)
-                       __connman_ipconfig_update_link(ipconfig,
-                                                       flags, change);
+               __connman_ipconfig_newlink(index, type, flags,
+                                                       str, mtu, &stats);
                break;
        }
 
+       if (memcmp(&address, &compare, ETH_ALEN) != 0)
+               connman_info("%s {newlink} index %d address %s mtu %u",
+                                               ifname, index, str, mtu);
+
+       if (operstate != 0xff)
+               connman_info("%s {newlink} index %d operstate %u <%s>",
+                                               ifname, index, operstate,
+                                               operstate2str(operstate));
+
+       interface = g_hash_table_lookup(interface_list, GINT_TO_POINTER(index));
+       if (interface == NULL) {
+               interface = g_new0(struct interface_data, 1);
+               interface->index = index;
+               interface->name = g_strdup(ifname);
+               interface->ident = g_strdup(ident);
+
+               g_hash_table_insert(interface_list,
+                                       GINT_TO_POINTER(index), interface);
+
+               if (type == ARPHRD_ETHER)
+                       read_uevent(interface);
+
+               __connman_technology_add_interface(interface->service_type,
+                       interface->index, interface->name, interface->ident);
+       }
+
        for (list = rtnl_list; list; list = list->next) {
                struct connman_rtnl *rtnl = list->data;
 
@@ -245,11 +479,22 @@ static void process_newlink(unsigned short type, int index,
        }
 }
 
-static void process_dellink(unsigned short type, int index,
-                                       unsigned flags, unsigned change)
+static void process_dellink(unsigned short type, int index, unsigned flags,
+                       unsigned change, struct ifinfomsg *msg, int bytes)
 {
+       struct rtnl_link_stats stats;
+       unsigned char operstate = 0xff;
+       const char *ifname = NULL;
        GSList *list;
 
+       memset(&stats, 0, sizeof(stats));
+       extract_link(msg, bytes, NULL, &ifname, NULL, &operstate, &stats);
+
+       if (operstate != 0xff)
+               connman_info("%s {dellink} index %d operstate %u <%s>",
+                                               ifname, index, operstate,
+                                               operstate2str(operstate));
+
        for (list = rtnl_list; list; list = list->next) {
                struct connman_rtnl *rtnl = list->data;
 
@@ -261,12 +506,14 @@ static void process_dellink(unsigned short type, int index,
        case ARPHRD_ETHER:
        case ARPHRD_LOOPBACK:
        case ARPHRD_NONE:
-               g_hash_table_remove(ipconfig_hash, GINT_TO_POINTER(index));
+               __connman_ipconfig_dellink(index, &stats);
                break;
        }
+
+       g_hash_table_remove(interface_list, GINT_TO_POINTER(index));
 }
 
-static void extract_addr(struct ifaddrmsg *msg, int bytes,
+static void extract_ipv4_addr(struct ifaddrmsg *msg, int bytes,
                                                const char **label,
                                                struct in_addr *local,
                                                struct in_addr *address,
@@ -297,53 +544,104 @@ static void extract_addr(struct ifaddrmsg *msg, int bytes,
        }
 }
 
+static void extract_ipv6_addr(struct ifaddrmsg *msg, int bytes,
+                                               struct in6_addr *addr,
+                                               struct in6_addr *local)
+{
+       struct rtattr *attr;
+
+       for (attr = IFA_RTA(msg); RTA_OK(attr, bytes);
+                                       attr = RTA_NEXT(attr, bytes)) {
+               switch (attr->rta_type) {
+               case IFA_ADDRESS:
+                       if (addr != NULL)
+                               *addr = *((struct in6_addr *) RTA_DATA(attr));
+                       break;
+               case IFA_LOCAL:
+                       if (local != NULL)
+                               *local = *((struct in6_addr *) RTA_DATA(attr));
+                       break;
+               }
+       }
+}
+
 static void process_newaddr(unsigned char family, unsigned char prefixlen,
                                int index, struct ifaddrmsg *msg, int bytes)
 {
-       GSList *list;
-       const char *label;
-       struct in_addr address = { INADDR_ANY };
+       const char *label = NULL;
+       void *src;
+       char ip_string[INET6_ADDRSTRLEN];
+
+       if (family == AF_INET) {
+               struct in_addr ipv4_addr = { INADDR_ANY };
+
+               extract_ipv4_addr(msg, bytes, &label, &ipv4_addr, NULL, NULL);
+               src = &ipv4_addr;
+       } else if (family == AF_INET6) {
+               struct in6_addr ipv6_address, ipv6_local;
 
-       if (family != AF_INET)
+               extract_ipv6_addr(msg, bytes, &ipv6_address, &ipv6_local);
+               if (IN6_IS_ADDR_LINKLOCAL(&ipv6_address))
+                       return;
+
+               src = &ipv6_address;
+       } else {
                return;
+       }
 
-       extract_addr(msg, bytes, &label, &address, NULL, NULL);
+       if (inet_ntop(family, src, ip_string, INET6_ADDRSTRLEN) == NULL)
+               return;
 
-       for (list = ipconfig_list; list; list = list->next) {
-               struct connman_ipconfig *ipconfig = list->data;
+       __connman_ipconfig_newaddr(index, family, label,
+                                       prefixlen, ip_string);
 
-               if (__connman_ipconfig_get_index(ipconfig) != index)
-                       continue;
+       if (family == AF_INET6) {
+               /*
+                * Re-create RDNSS configured servers if there are any
+                * for this interface. This is done because we might
+                * have now properly configured interface with proper
+                * autoconfigured address.
+                */
+               char *interface = connman_inet_ifname(index);
 
-               __connman_ipconfig_add_address(ipconfig, label, prefixlen,
-                                               inet_ntoa(address), NULL);
+               __connman_resolver_redo_servers(interface);
+
+               g_free(interface);
        }
 }
 
 static void process_deladdr(unsigned char family, unsigned char prefixlen,
                                int index, struct ifaddrmsg *msg, int bytes)
 {
-       GSList *list;
-       const char *label;
-       struct in_addr address = { INADDR_ANY };
+       const char *label = NULL;
+       void *src;
+       char ip_string[INET6_ADDRSTRLEN];
 
-       if (family != AF_INET)
-               return;
-
-       extract_addr(msg, bytes, &label, &address, NULL, NULL);
+       if (family == AF_INET) {
+               struct in_addr ipv4_addr = { INADDR_ANY };
 
-       for (list = ipconfig_list; list; list = list->next) {
-               struct connman_ipconfig *ipconfig = list->data;
+               extract_ipv4_addr(msg, bytes, &label, &ipv4_addr, NULL, NULL);
+               src = &ipv4_addr;
+       } else if (family == AF_INET6) {
+               struct in6_addr ipv6_address, ipv6_local;
 
-               if (__connman_ipconfig_get_index(ipconfig) != index)
-                       continue;
+               extract_ipv6_addr(msg, bytes, &ipv6_address, &ipv6_local);
+               if (IN6_IS_ADDR_LINKLOCAL(&ipv6_address))
+                       return;
 
-               __connman_ipconfig_del_address(ipconfig, label, prefixlen,
-                                               inet_ntoa(address), NULL);
+               src = &ipv6_address;
+       } else {
+               return;
        }
+
+       if (inet_ntop(family, src, ip_string, INET6_ADDRSTRLEN) == NULL)
+               return;
+
+       __connman_ipconfig_deladdr(index, family, label,
+                                       prefixlen, ip_string);
 }
 
-static void extract_route(struct rtmsg *msg, int bytes, int *index,
+static void extract_ipv4_route(struct rtmsg *msg, int bytes, int *index,
                                                struct in_addr *dst,
                                                struct in_addr *gateway)
 {
@@ -368,108 +666,169 @@ static void extract_route(struct rtmsg *msg, int bytes, int *index,
        }
 }
 
-static void process_newroute(unsigned char family, unsigned char scope,
-                                               struct rtmsg *msg, int bytes)
+static void extract_ipv6_route(struct rtmsg *msg, int bytes, int *index,
+                                               struct in6_addr *dst,
+                                               struct in6_addr *gateway)
 {
-       GSList *list;
-       struct in_addr dst = { INADDR_ANY }, gateway = { INADDR_ANY };
-       char dststr[16], gatewaystr[16];
-       int index = -1;
-
-       if (family != AF_INET)
-               return;
-
-       extract_route(msg, bytes, &index, &dst, &gateway);
-
-       inet_ntop(family, &dst, dststr, sizeof(dststr));
-       inet_ntop(family, &gateway, gatewaystr, sizeof(gatewaystr));
-
-       for (list = ipconfig_list; list; list = list->next) {
-               struct connman_ipconfig *ipconfig = list->data;
-
-               if (__connman_ipconfig_get_index(ipconfig) != index)
-                       continue;
+       struct rtattr *attr;
 
-               __connman_ipconfig_add_route(ipconfig, scope,
-                                                       dststr, gatewaystr);
+       for (attr = RTM_RTA(msg); RTA_OK(attr, bytes);
+                                       attr = RTA_NEXT(attr, bytes)) {
+               switch (attr->rta_type) {
+               case RTA_DST:
+                       if (dst != NULL)
+                               *dst = *((struct in6_addr *) RTA_DATA(attr));
+                       break;
+               case RTA_GATEWAY:
+                       if (gateway != NULL)
+                               *gateway =
+                                       *((struct in6_addr *) RTA_DATA(attr));
+                       break;
+               case RTA_OIF:
+                       if (index != NULL)
+                               *index = *((int *) RTA_DATA(attr));
+                       break;
+               }
        }
 }
 
-static void process_delroute(unsigned char family, unsigned char scope,
+static void process_newroute(unsigned char family, unsigned char scope,
                                                struct rtmsg *msg, int bytes)
 {
        GSList *list;
-       struct in_addr dst = { INADDR_ANY }, gateway = { INADDR_ANY };
-       char dststr[16], gatewaystr[16];
+       char dststr[INET6_ADDRSTRLEN], gatewaystr[INET6_ADDRSTRLEN];
        int index = -1;
 
-       if (family != AF_INET)
-               return;
+       if (family == AF_INET) {
+               struct in_addr dst = { INADDR_ANY }, gateway = { INADDR_ANY };
 
-       extract_route(msg, bytes, &index, &dst, &gateway);
+               extract_ipv4_route(msg, bytes, &index, &dst, &gateway);
 
-       inet_ntop(family, &dst, dststr, sizeof(dststr));
-       inet_ntop(family, &gateway, gatewaystr, sizeof(gatewaystr));
+               inet_ntop(family, &dst, dststr, sizeof(dststr));
+               inet_ntop(family, &gateway, gatewaystr, sizeof(gatewaystr));
 
-       for (list = ipconfig_list; list; list = list->next) {
-               struct connman_ipconfig *ipconfig = list->data;
+               __connman_ipconfig_newroute(index, family, scope, dststr,
+                                                               gatewaystr);
 
-               if (__connman_ipconfig_get_index(ipconfig) != index)
-                       continue;
+               /* skip host specific routes */
+               if (scope != RT_SCOPE_UNIVERSE &&
+                       !(scope == RT_SCOPE_LINK && dst.s_addr == INADDR_ANY))
+                       return;
 
-               __connman_ipconfig_del_route(ipconfig, scope,
-                                                       dststr, gatewaystr);
-       }
-}
+               if (dst.s_addr != INADDR_ANY)
+                       return;
 
-static void process_newgateway(struct rtmsg *msg, int bytes)
-{
-       GSList *list;
-       struct in_addr dst = { INADDR_ANY }, gateway = { INADDR_ANY };
-       int index = -1;
+       } else if (family == AF_INET6) {
+               struct in6_addr dst = IN6ADDR_ANY_INIT,
+                               gateway = IN6ADDR_ANY_INIT;
+
+               extract_ipv6_route(msg, bytes, &index, &dst, &gateway);
+
+               inet_ntop(family, &dst, dststr, sizeof(dststr));
+               inet_ntop(family, &gateway, gatewaystr, sizeof(gatewaystr));
 
-       extract_route(msg, bytes, &index, &dst, &gateway);
+               __connman_ipconfig_newroute(index, family, scope, dststr,
+                                                               gatewaystr);
 
-       if (dst.s_addr != INADDR_ANY)
+               /* skip host specific routes */
+               if (scope != RT_SCOPE_UNIVERSE &&
+                       !(scope == RT_SCOPE_LINK &&
+                               IN6_IS_ADDR_UNSPECIFIED(&dst)))
+                       return;
+
+               if (!IN6_IS_ADDR_UNSPECIFIED(&dst))
+                       return;
+       } else
                return;
 
        for (list = rtnl_list; list; list = list->next) {
                struct connman_rtnl *rtnl = list->data;
 
                if (rtnl->newgateway)
-                       rtnl->newgateway(index, inet_ntoa(gateway));
+                       rtnl->newgateway(index, gatewaystr);
        }
 }
 
-static void process_delgateway(struct rtmsg *msg, int bytes)
+static void process_delroute(unsigned char family, unsigned char scope,
+                                               struct rtmsg *msg, int bytes)
 {
        GSList *list;
-       struct in_addr dst = { INADDR_ANY }, gateway = { INADDR_ANY };
+       char dststr[INET6_ADDRSTRLEN], gatewaystr[INET6_ADDRSTRLEN];
        int index = -1;
 
-       extract_route(msg, bytes, &index, &dst, &gateway);
+       if (family == AF_INET) {
+               struct in_addr dst = { INADDR_ANY }, gateway = { INADDR_ANY };
+
+               extract_ipv4_route(msg, bytes, &index, &dst, &gateway);
+
+               inet_ntop(family, &dst, dststr, sizeof(dststr));
+               inet_ntop(family, &gateway, gatewaystr, sizeof(gatewaystr));
+
+               __connman_ipconfig_delroute(index, family, scope, dststr,
+                                                               gatewaystr);
 
-       if (dst.s_addr != INADDR_ANY)
+               /* skip host specific routes */
+               if (scope != RT_SCOPE_UNIVERSE &&
+                       !(scope == RT_SCOPE_LINK && dst.s_addr == INADDR_ANY))
+                       return;
+
+               if (dst.s_addr != INADDR_ANY)
+                       return;
+
+       }  else if (family == AF_INET6) {
+               struct in6_addr dst = IN6ADDR_ANY_INIT,
+                               gateway = IN6ADDR_ANY_INIT;
+
+               extract_ipv6_route(msg, bytes, &index, &dst, &gateway);
+
+               inet_ntop(family, &dst, dststr, sizeof(dststr));
+               inet_ntop(family, &gateway, gatewaystr, sizeof(gatewaystr));
+
+               __connman_ipconfig_delroute(index, family, scope, dststr,
+                                               gatewaystr);
+
+               /* skip host specific routes */
+               if (scope != RT_SCOPE_UNIVERSE &&
+                       !(scope == RT_SCOPE_LINK &&
+                               IN6_IS_ADDR_UNSPECIFIED(&dst)))
+                       return;
+
+               if (!IN6_IS_ADDR_UNSPECIFIED(&dst))
+                       return;
+       } else
                return;
 
        for (list = rtnl_list; list; list = list->next) {
                struct connman_rtnl *rtnl = list->data;
 
                if (rtnl->delgateway)
-                       rtnl->delgateway(index, inet_ntoa(gateway));
+                       rtnl->delgateway(index, gatewaystr);
        }
 }
 
+static inline void print_ether(struct rtattr *attr, const char *name)
+{
+       int len = (int) RTA_PAYLOAD(attr);
+
+       if (len == ETH_ALEN) {
+               struct ether_addr eth;
+               memcpy(&eth, RTA_DATA(attr), ETH_ALEN);
+               print("  attr %s (len %d) %s\n", name, len, ether_ntoa(&eth));
+       } else
+               print("  attr %s (len %d)\n", name, len);
+}
+
 static inline void print_inet(struct rtattr *attr, const char *name,
                                                        unsigned char family)
 {
-       if (family == AF_INET) {
+       int len = (int) RTA_PAYLOAD(attr);
+
+       if (family == AF_INET && len == sizeof(struct in_addr)) {
                struct in_addr addr;
                addr = *((struct in_addr *) RTA_DATA(attr));
-               print("  attr %s (len %d) %s\n", name,
-                               (int) RTA_PAYLOAD(attr), inet_ntoa(addr));
+               print("  attr %s (len %d) %s\n", name, len, inet_ntoa(addr));
        } else
-               print("  attr %s (len %d)\n", name, (int) RTA_PAYLOAD(attr));
+               print("  attr %s (len %d)\n", name, len);
 }
 
 static inline void print_string(struct rtattr *attr, const char *name)
@@ -492,11 +851,12 @@ static inline void print_integer(struct rtattr *attr, const char *name)
 
 static inline void print_attr(struct rtattr *attr, const char *name)
 {
-       if (name)
-               print("  attr %s (len %d)\n", name, (int) RTA_PAYLOAD(attr));
+       int len = (int) RTA_PAYLOAD(attr);
+
+       if (name && len > 0)
+               print("  attr %s (len %d)\n", name, len);
        else
-               print("  attr %d (len %d)\n",
-                               attr->rta_type, (int) RTA_PAYLOAD(attr));
+               print("  attr %d (len %d)\n", attr->rta_type, len);
 }
 
 static void rtnl_link(struct nlmsghdr *hdr)
@@ -514,10 +874,10 @@ static void rtnl_link(struct nlmsghdr *hdr)
                                        attr = RTA_NEXT(attr, bytes)) {
                switch (attr->rta_type) {
                case IFLA_ADDRESS:
-                       print_attr(attr, "address");
+                       print_ether(attr, "address");
                        break;
                case IFLA_BROADCAST:
-                       print_attr(attr, "broadcast");
+                       print_ether(attr, "broadcast");
                        break;
                case IFLA_IFNAME:
                        print_string(attr, "ifname");
@@ -550,7 +910,7 @@ static void rtnl_link(struct nlmsghdr *hdr)
                        print_attr(attr, "protinfo");
                        break;
                case IFLA_TXQLEN:
-                       print_attr(attr, "txqlen");
+                       print_integer(attr, "txqlen");
                        break;
                case IFLA_MAP:
                        print_attr(attr, "map");
@@ -577,8 +937,8 @@ static void rtnl_newlink(struct nlmsghdr *hdr)
 
        rtnl_link(hdr);
 
-       process_newlink(msg->ifi_type, msg->ifi_index,
-                                       msg->ifi_flags, msg->ifi_change);
+       process_newlink(msg->ifi_type, msg->ifi_index, msg->ifi_flags,
+                               msg->ifi_change, msg, IFA_PAYLOAD(hdr));
 }
 
 static void rtnl_dellink(struct nlmsghdr *hdr)
@@ -587,8 +947,8 @@ static void rtnl_dellink(struct nlmsghdr *hdr)
 
        rtnl_link(hdr);
 
-       process_dellink(msg->ifi_type, msg->ifi_index,
-                                       msg->ifi_flags, msg->ifi_change);
+       process_dellink(msg->ifi_type, msg->ifi_index, msg->ifi_flags,
+                               msg->ifi_change, msg, IFA_PAYLOAD(hdr));
 }
 
 static void rtnl_addr(struct nlmsghdr *hdr)
@@ -704,22 +1064,31 @@ static void rtnl_route(struct nlmsghdr *hdr)
        }
 }
 
+static connman_bool_t is_route_rtmsg(struct rtmsg *msg)
+{
+
+       if (msg->rtm_table != RT_TABLE_MAIN)
+               return FALSE;
+
+       if (msg->rtm_protocol != RTPROT_BOOT &&
+                       msg->rtm_protocol != RTPROT_KERNEL)
+               return FALSE;
+
+       if (msg->rtm_type != RTN_UNICAST)
+               return FALSE;
+
+       return TRUE;
+}
+
 static void rtnl_newroute(struct nlmsghdr *hdr)
 {
        struct rtmsg *msg = (struct rtmsg *) NLMSG_DATA(hdr);
 
        rtnl_route(hdr);
 
-       if (msg->rtm_table == RT_TABLE_MAIN &&
-                               msg->rtm_protocol == RTPROT_BOOT &&
-                                       msg->rtm_type == RTN_UNICAST) {
-
+       if (is_route_rtmsg(msg))
                process_newroute(msg->rtm_family, msg->rtm_scope,
                                                msg, RTM_PAYLOAD(hdr));
-
-               if (msg->rtm_scope == RT_SCOPE_UNIVERSE)
-                       process_newgateway(msg, RTM_PAYLOAD(hdr));
-       }
 }
 
 static void rtnl_delroute(struct nlmsghdr *hdr)
@@ -728,16 +1097,145 @@ static void rtnl_delroute(struct nlmsghdr *hdr)
 
        rtnl_route(hdr);
 
-       if (msg->rtm_table == RT_TABLE_MAIN &&
-                               msg->rtm_protocol == RTPROT_BOOT &&
-                                       msg->rtm_type == RTN_UNICAST) {
-
+       if (is_route_rtmsg(msg))
                process_delroute(msg->rtm_family, msg->rtm_scope,
                                                msg, RTM_PAYLOAD(hdr));
+}
+
+static void *rtnl_nd_opt_rdnss(struct nd_opt_hdr *opt, guint32 *lifetime,
+                              int *nr_servers)
+{
+       guint32 *optint = (void *)opt;
+
+       if (opt->nd_opt_len < 3)
+               return NULL;
+
+       if (*lifetime > ntohl(optint[1]))
+               *lifetime = ntohl(optint[1]);
+
+       /* nd_opt_len is in units of 8 bytes. The header is 1 unit (8 bytes)
+          and each address is another 2 units (16 bytes).
+          So the number of addresses (given rounding) is nd_opt_len/2 */
+       *nr_servers = opt->nd_opt_len / 2;
+
+       /* And they start 8 bytes into the packet, or two guint32s in. */
+       return optint + 2;
+}
+
+static const char **rtnl_nd_opt_dnssl(struct nd_opt_hdr *opt, guint32 *lifetime)
+{
+       const char **domains = NULL;
+       guint32 *optint = (void *)opt;
+       unsigned char *optc = (void *)&optint[2];
+       int data_len = (opt->nd_opt_len * 8) - 8;
+       int nr_domains = 0;
+       int i, tmp;
+
+       if (*lifetime > ntohl(optint[1]))
+               *lifetime = ntohl(optint[1]);
+
+       /* Turn it into normal strings by converting the length bytes into '.',
+          and count how many search domains there are while we're at it. */
+       i = 0;
+       while (i < data_len) {
+               if (optc[i] > 0x3f) {
+                       DBG("DNSSL contains compressed elements in violation of RFC6106");
+                       return NULL;
+               }
 
-               if (msg->rtm_scope == RT_SCOPE_UNIVERSE)
-                       process_delgateway(msg, RTM_PAYLOAD(hdr));
+               if (optc[i] == 0) {
+                       nr_domains++;
+                       i++;
+                       /* Check for double zero */
+                       if (i < data_len && optc[i] == 0)
+                               break;
+                       continue;
+               }
+
+               tmp = i;
+               i += optc[i] + 1;
+
+               if (i >= data_len) {
+                       DBG("DNSSL data overflows option length");
+                       return NULL;
+               }
+
+               optc[tmp] = '.';
        }
+
+       domains = g_try_new0(const char *, nr_domains + 1);
+       if (!domains)
+               return NULL;
+
+       /* Now point to the normal strings, missing out the leading '.' that
+          each of them will have now. */
+       for (i = 0; i < nr_domains; i++) {
+               domains[i] = (char *)optc + 1;
+               optc += strlen((char *)optc) + 1;
+       }
+
+       return domains;
+}
+
+static void rtnl_newnduseropt(struct nlmsghdr *hdr)
+{
+       struct nduseroptmsg *msg = (struct nduseroptmsg *) NLMSG_DATA(hdr);
+       struct nd_opt_hdr *opt;
+       guint32 lifetime = -1;
+       const char **domains = NULL;
+       struct in6_addr *servers = NULL;
+       int i, nr_servers = 0;
+       int msglen = msg->nduseropt_opts_len;
+       char *interface;
+
+       DBG("family %d index %d len %d type %d code %d",
+               msg->nduseropt_family, msg->nduseropt_ifindex,
+               msg->nduseropt_opts_len, msg->nduseropt_icmp_type,
+               msg->nduseropt_icmp_code);
+
+       if (msg->nduseropt_family != AF_INET6 ||
+                       msg->nduseropt_icmp_type != ND_ROUTER_ADVERT ||
+                       msg->nduseropt_icmp_code != 0)
+               return;
+
+       interface = connman_inet_ifname(msg->nduseropt_ifindex);
+       if (!interface)
+               return;
+
+       for (opt = (void *)&msg[1];
+                       msglen > 0;
+                       msglen -= opt->nd_opt_len * 8,
+                       opt = ((void *)opt) + opt->nd_opt_len*8) {
+
+               DBG("remaining %d nd opt type %d len %d\n",
+                       msglen, opt->nd_opt_type, opt->nd_opt_len);
+
+               if (opt->nd_opt_type == 25) { /* ND_OPT_RDNSS */
+                       char buf[40];
+
+                       servers = rtnl_nd_opt_rdnss(opt, &lifetime,
+                                                               &nr_servers);
+                       for (i = 0; i < nr_servers; i++) {
+                               if (!inet_ntop(AF_INET6, servers + i, buf,
+                                                               sizeof(buf)))
+                                       continue;
+
+                               connman_resolver_append_lifetime(interface,
+                                                       NULL, buf, lifetime);
+                       }
+
+               } else if (opt->nd_opt_type == 31) { /* ND_OPT_DNSSL */
+                       g_free(domains);
+
+                       domains = rtnl_nd_opt_dnssl(opt, &lifetime);
+                       for (i = 0; domains != NULL && domains[i] != NULL; i++)
+                               connman_resolver_append_lifetime(interface,
+                                               domains[i], NULL, lifetime);
+               }
+       }
+
+       g_free(domains);
+       g_free(interface);
 }
 
 static const char *type2string(uint16_t type)
@@ -767,6 +1265,8 @@ static const char *type2string(uint16_t type)
                return "NEWROUTE";
        case RTM_DELROUTE:
                return "DELROUTE";
+       case RTM_NEWNDUSEROPT:
+               return "NEWNDUSEROPT";
        default:
                return "UNKNOWN";
        }
@@ -856,10 +1356,11 @@ static void rtnl_message(void *buf, size_t len)
                if (!NLMSG_OK(hdr, len))
                        break;
 
-               DBG("%s len %d type %d flags 0x%04x seq %d",
+               DBG("%s len %d type %d flags 0x%04x seq %d pid %d",
                                        type2string(hdr->nlmsg_type),
                                        hdr->nlmsg_len, hdr->nlmsg_type,
-                                       hdr->nlmsg_flags, hdr->nlmsg_seq);
+                                       hdr->nlmsg_flags, hdr->nlmsg_seq,
+                                       hdr->nlmsg_pid);
 
                switch (hdr->nlmsg_type) {
                case NLMSG_NOOP:
@@ -891,6 +1392,9 @@ static void rtnl_message(void *buf, size_t len)
                case RTM_DELROUTE:
                        rtnl_delroute(hdr);
                        break;
+               case RTM_NEWNDUSEROPT:
+                       rtnl_newnduseropt(hdr);
+                       break;
                }
 
                len -= hdr->nlmsg_len;
@@ -902,22 +1406,37 @@ static gboolean netlink_event(GIOChannel *chan,
                                GIOCondition cond, gpointer data)
 {
        unsigned char buf[4096];
-       gsize len;
-       GIOError err;
+       struct sockaddr_nl nladdr;
+       socklen_t addr_len = sizeof(nladdr);
+       ssize_t status;
+       int fd;
 
        if (cond & (G_IO_NVAL | G_IO_HUP | G_IO_ERR))
                return FALSE;
 
        memset(buf, 0, sizeof(buf));
+       memset(&nladdr, 0, sizeof(nladdr));
+
+       fd = g_io_channel_unix_get_fd(chan);
 
-       err = g_io_channel_read(chan, (gchar *) buf, sizeof(buf), &len);
-       if (err) {
-               if (err == G_IO_ERROR_AGAIN)
+       status = recvfrom(fd, buf, sizeof(buf), 0,
+                       (struct sockaddr *) &nladdr, &addr_len);
+       if (status < 0) {
+               if (errno == EINTR || errno == EAGAIN)
                        return TRUE;
+
                return FALSE;
        }
 
-       rtnl_message(buf, len);
+       if (status == 0)
+               return FALSE;
+
+       if (nladdr.nl_pid != 0) { /* not sent by kernel, ignore */
+               DBG("Received msg from %u, ignoring it", nladdr.nl_pid);
+               return TRUE;
+       }
+
+       rtnl_message(buf, status);
 
        return TRUE;
 }
@@ -962,7 +1481,7 @@ static int send_getaddr(void)
        return queue_request(req);
 }
 
-int connman_rtnl_send_getroute(void)
+static int send_getroute(void)
 {
        struct rtnl_request *req;
 
@@ -982,6 +1501,78 @@ int connman_rtnl_send_getroute(void)
        return queue_request(req);
 }
 
+static gboolean update_timeout_cb(gpointer user_data)
+{
+       __connman_rtnl_request_update();
+
+       return TRUE;
+}
+
+static void update_interval_callback(guint min)
+{
+       if (update_timeout > 0)
+               g_source_remove(update_timeout);
+
+       if (min < G_MAXUINT) {
+               update_interval = min;
+               update_timeout = g_timeout_add_seconds(update_interval,
+                                               update_timeout_cb, NULL);
+       } else {
+               update_timeout = 0;
+               update_interval = G_MAXUINT;
+       }
+}
+
+static gint compare_interval(gconstpointer a, gconstpointer b)
+{
+       guint val_a = GPOINTER_TO_UINT(a);
+       guint val_b = GPOINTER_TO_UINT(b);
+
+       return val_a - val_b;
+}
+
+unsigned int __connman_rtnl_update_interval_add(unsigned int interval)
+{
+       guint min;
+
+       if (interval == 0)
+               return 0;
+
+       update_list = g_slist_insert_sorted(update_list,
+                       GUINT_TO_POINTER(interval), compare_interval);
+
+       min = GPOINTER_TO_UINT(g_slist_nth_data(update_list, 0));
+       if (min < update_interval) {
+               update_interval_callback(min);
+               __connman_rtnl_request_update();
+       }
+
+       return update_interval;
+}
+
+unsigned int __connman_rtnl_update_interval_remove(unsigned int interval)
+{
+       guint min = G_MAXUINT;
+
+       if (interval == 0)
+               return 0;
+
+       update_list = g_slist_remove(update_list, GINT_TO_POINTER(interval));
+
+       if (update_list != NULL)
+               min = GPOINTER_TO_UINT(g_slist_nth_data(update_list, 0));
+
+       if (min > update_interval)
+               update_interval_callback(min);
+
+       return min;
+}
+
+int __connman_rtnl_request_update(void)
+{
+       return send_getlink();
+}
+
 int __connman_rtnl_init(void)
 {
        struct sockaddr_nl addr;
@@ -989,16 +1580,18 @@ int __connman_rtnl_init(void)
 
        DBG("");
 
-       ipconfig_hash = g_hash_table_new_full(g_direct_hash, g_direct_equal,
-                                                       NULL, free_ipconfig);
+       interface_list = g_hash_table_new_full(g_direct_hash, g_direct_equal,
+                                                       NULL, free_interface);
 
-       sk = socket(PF_NETLINK, SOCK_DGRAM, NETLINK_ROUTE);
+       sk = socket(PF_NETLINK, SOCK_DGRAM | SOCK_CLOEXEC, NETLINK_ROUTE);
        if (sk < 0)
                return -1;
 
        memset(&addr, 0, sizeof(addr));
        addr.nl_family = AF_NETLINK;
-       addr.nl_groups = RTMGRP_LINK | RTMGRP_IPV4_IFADDR | RTMGRP_IPV4_ROUTE;
+       addr.nl_groups = RTMGRP_LINK | RTMGRP_IPV4_IFADDR | RTMGRP_IPV4_ROUTE |
+                               RTMGRP_IPV6_IFADDR | RTMGRP_IPV6_ROUTE |
+                               (1<<(RTNLGRP_ND_USEROPT-1));
 
        if (bind(sk, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
                close(sk);
@@ -1008,6 +1601,9 @@ int __connman_rtnl_init(void)
        channel = g_io_channel_unix_new(sk);
        g_io_channel_set_close_on_unref(channel, TRUE);
 
+       g_io_channel_set_encoding(channel, NULL, NULL);
+       g_io_channel_set_buffered(channel, FALSE);
+
        g_io_add_watch(channel, G_IO_IN | G_IO_NVAL | G_IO_HUP | G_IO_ERR,
                                                        netlink_event, NULL);
 
@@ -1020,7 +1616,7 @@ void __connman_rtnl_start(void)
 
        send_getlink();
        send_getaddr();
-       connman_rtnl_send_getroute();
+       send_getroute();
 }
 
 void __connman_rtnl_cleanup(void)
@@ -1029,12 +1625,6 @@ void __connman_rtnl_cleanup(void)
 
        DBG("");
 
-       g_slist_free(ipconfig_list);
-       ipconfig_list = NULL;
-
-       g_hash_table_destroy(ipconfig_hash);
-       ipconfig_hash = NULL;
-
        for (list = watch_list; list; list = list->next) {
                struct watch_data *watch = list->data;
 
@@ -1047,6 +1637,9 @@ void __connman_rtnl_cleanup(void)
        g_slist_free(watch_list);
        watch_list = NULL;
 
+       g_slist_free(update_list);
+       update_list = NULL;
+
        for (list = request_list; list; list = list->next) {
                struct rtnl_request *req = list->data;
 
@@ -1066,4 +1659,6 @@ void __connman_rtnl_cleanup(void)
        g_io_channel_unref(channel);
 
        channel = NULL;
+
+       g_hash_table_destroy(interface_list);
 }