static void
check_addrconf_complete (NMIP6Device *device)
{
CallbackInfo *info;
if (!device->addrconf_complete) {
/* Managed mode (ie DHCP only) short-circuits automatic addrconf, so
* we don't bother waiting for the device's target state to be reached
* when the RA requests managed mode.
*/
if ( (device->state >= device->target_state)
|| (device->dhcp_opts == IP6_DHCP_OPT_MANAGED)) {
/* device->finish_addrconf_id may currently be a timeout
* rather than an idle, so we remove the existing source.
*/
if (device->finish_addrconf_id)
g_source_remove (device->finish_addrconf_id);
nm_log_dbg (LOGD_IP6, "(%s): reached target state or Managed-mode requested (state '%s') (dhcp opts 0x%X)",
device->iface, state_to_string (device->state),
device->dhcp_opts);
info = callback_info_new (device, TRUE);
device->finish_addrconf_id = g_idle_add_full (G_PRIORITY_DEFAULT_IDLE,
finish_addrconf,
info,
(GDestroyNotify) g_free);
}
} else {
if (!device->config_changed_id) {
gboolean success = TRUE;
/* If for some reason an RA-provided address disappeared, we need
* to make sure we fail the connection as it's no longer valid.
*/
if ( (device->state == NM_IP6_DEVICE_GOT_ADDRESS)
&& (device->target_state == NM_IP6_DEVICE_GOT_ADDRESS)
&& !device->has_nonlinklocal) {
nm_log_dbg (LOGD_IP6, "(%s): RA-provided address no longer found",
device->iface);
success = FALSE;
}
info = callback_info_new (device, success);
device->config_changed_id = g_idle_add_full (G_PRIORITY_DEFAULT_IDLE,
emit_config_changed,
info,
(GDestroyNotify) g_free);
}
}
nm_log_dbg (LOGD_IP6, "(%s): dhcp_opts checked (state %s)",
device->iface, state_to_string (device->state));
}
void
nm_ip6_manager_begin_addrconf (NMIP6Manager *manager, int ifindex)
{
NMIP6ManagerPrivate *priv;
NMIP6Device *device;
CallbackInfo *info;
g_return_if_fail (NM_IS_IP6_MANAGER (manager));
g_return_if_fail (ifindex > 0);
priv = NM_IP6_MANAGER_GET_PRIVATE (manager);
device = (NMIP6Device *) g_hash_table_lookup (priv->devices, GINT_TO_POINTER (ifindex));
g_return_if_fail (device != NULL);
nm_log_info (LOGD_IP6, "Activation (%s) Beginning IP6 addrconf.", device->iface);
device->addrconf_complete = FALSE;
device->ra_flags = 0;
/* Set up a timeout on the transaction to kill it after the timeout */
info = callback_info_new (device, FALSE);
device->finish_addrconf_id = g_timeout_add_seconds_full (G_PRIORITY_DEFAULT,
NM_IP6_TIMEOUT,
finish_addrconf,
info,
(GDestroyNotify) g_free);
/* Bounce IPv6 on the interface to ensure the kernel will start looking for
* new RAs; there doesn't seem to be a better way to do this right now.
*/
if (device->target_state >= NM_IP6_DEVICE_GOT_ADDRESS) {
nm_utils_do_sysctl (device->disable_ip6_path, "1");
/* Wait until all existing IPv6 addresses have been removed from the link,
* to ensure they don't confuse our IPv6 addressing state machine.
*/
wait_for_no_addresses (manager, device);
nm_utils_do_sysctl (device->disable_ip6_path, "0");
}
device->ip6flags_poll_id = g_timeout_add_seconds (1, poll_ip6_flags, priv->monitor);
/* Kick off the initial IPv6 flags request */
nm_netlink_monitor_request_ip6_info (priv->monitor, NULL);
/* Sync flags, etc, from netlink; this will also notice if the
* device is already fully configured and schedule the
* ADDRCONF_COMPLETE signal in that case.
*/
nm_ip6_device_sync_from_netlink (device);
}
static void
nm_ip6_device_sync_from_netlink (NMIP6Device *device, gboolean config_changed)
{
NMIP6Manager *manager = device->manager;
NMIP6ManagerPrivate *priv = NM_IP6_MANAGER_GET_PRIVATE (manager);
struct rtnl_addr *rtnladdr;
struct nl_addr *nladdr;
struct in6_addr *addr;
CallbackInfo *info;
guint dhcp_opts = IP6_DHCP_OPT_NONE;
gboolean found_linklocal = FALSE, found_other = FALSE;
nm_log_dbg (LOGD_IP6, "(%s): syncing with netlink (ra_flags 0x%X) (state/target '%s'/'%s')",
device->iface, device->ra_flags,
state_to_string (device->state),
state_to_string (device->target_state));
/* Look for any IPv6 addresses the kernel may have set for the device */
for (rtnladdr = (struct rtnl_addr *) nl_cache_get_first (priv->addr_cache);
rtnladdr;
rtnladdr = (struct rtnl_addr *) nl_cache_get_next ((struct nl_object *) rtnladdr)) {
char buf[INET6_ADDRSTRLEN];
if (rtnl_addr_get_ifindex (rtnladdr) != device->ifindex)
continue;
nladdr = rtnl_addr_get_local (rtnladdr);
if (!nladdr || nl_addr_get_family (nladdr) != AF_INET6)
continue;
addr = nl_addr_get_binary_addr (nladdr);
if (inet_ntop (AF_INET6, addr, buf, INET6_ADDRSTRLEN) > 0) {
nm_log_dbg (LOGD_IP6, "(%s): netlink address: %s",
device->iface, buf);
}
if (IN6_IS_ADDR_LINKLOCAL (addr)) {
if (device->state == NM_IP6_DEVICE_UNCONFIGURED)
device->state = NM_IP6_DEVICE_GOT_LINK_LOCAL;
found_linklocal = TRUE;
} else {
if (device->state < NM_IP6_DEVICE_GOT_ADDRESS)
device->state = NM_IP6_DEVICE_GOT_ADDRESS;
found_other = TRUE;
}
}
/* There might be a LL address hanging around on the interface from
* before in the initial run, but if it goes away later, make sure we
* regress from GOT_LINK_LOCAL back to UNCONFIGURED.
*/
if ((device->state == NM_IP6_DEVICE_GOT_LINK_LOCAL) && !found_linklocal)
device->state = NM_IP6_DEVICE_UNCONFIGURED;
nm_log_dbg (LOGD_IP6, "(%s): addresses synced (state %s)",
device->iface, state_to_string (device->state));
/* We only care about router advertisements if we want a real IPv6 address */
if ( (device->target_state == NM_IP6_DEVICE_GOT_ADDRESS)
&& (device->ra_flags & IF_RA_RCVD)) {
if (device->state < NM_IP6_DEVICE_GOT_ROUTER_ADVERTISEMENT)
device->state = NM_IP6_DEVICE_GOT_ROUTER_ADVERTISEMENT;
if (device->ra_flags & IF_RA_MANAGED) {
dhcp_opts = IP6_DHCP_OPT_MANAGED;
nm_log_dbg (LOGD_IP6, "router advertisement deferred to DHCPv6");
} else if (device->ra_flags & IF_RA_OTHERCONF) {
dhcp_opts = IP6_DHCP_OPT_OTHERCONF;
nm_log_dbg (LOGD_IP6, "router advertisement requests parallel DHCPv6");
}
}
if (!device->addrconf_complete) {
/* Managed mode (ie DHCP only) short-circuits automatic addrconf, so
* we don't bother waiting for the device's target state to be reached
* when the RA requests managed mode.
*/
if ( (device->state >= device->target_state)
|| (dhcp_opts == IP6_DHCP_OPT_MANAGED)) {
/* device->finish_addrconf_id may currently be a timeout
* rather than an idle, so we remove the existing source.
*/
if (device->finish_addrconf_id)
g_source_remove (device->finish_addrconf_id);
nm_log_dbg (LOGD_IP6, "(%s): reached target state or Managed-mode requested (state '%s') (dhcp opts 0x%X)",
device->iface, state_to_string (device->state),
dhcp_opts);
info = callback_info_new (device, dhcp_opts, TRUE);
device->finish_addrconf_id = g_idle_add_full (G_PRIORITY_DEFAULT_IDLE,
finish_addrconf,
info,
(GDestroyNotify) g_free);
}
} else if (config_changed) {
if (!device->config_changed_id) {
gboolean success = TRUE;
/* If for some reason an RA-provided address disappeared, we need
* to make sure we fail the connection as it's no longer valid.
*/
if ( (device->state == NM_IP6_DEVICE_GOT_ADDRESS)
&& (device->target_state == NM_IP6_DEVICE_GOT_ADDRESS)
&& !found_other) {
nm_log_dbg (LOGD_IP6, "(%s): RA-provided address no longer valid",
device->iface);
success = FALSE;
}
info = callback_info_new (device, dhcp_opts, success);
device->config_changed_id = g_idle_add_full (G_PRIORITY_DEFAULT_IDLE,
emit_config_changed,
info,
(GDestroyNotify) g_free);
}
}
}