bool __connman_connection_update_gateway(void)
{
struct gateway_data *default_gateway;
bool updated = false;
GHashTableIter iter;
gpointer value, key;
if (!gateway_hash)
return updated;
update_order();
default_gateway = find_default_gateway();
__connman_service_update_ordering();
DBG("default %p", default_gateway);
/*
* There can be multiple active gateways so we need to
* check them all.
*/
g_hash_table_iter_init(&iter, gateway_hash);
while (g_hash_table_iter_next(&iter, &key, &value)) {
struct gateway_data *active_gateway = value;
if (active_gateway == default_gateway)
continue;
if (active_gateway->ipv4_gateway &&
active_gateway->ipv4_gateway->active) {
unset_default_gateway(active_gateway,
CONNMAN_IPCONFIG_TYPE_IPV4);
updated = true;
}
if (active_gateway->ipv6_gateway &&
active_gateway->ipv6_gateway->active) {
unset_default_gateway(active_gateway,
CONNMAN_IPCONFIG_TYPE_IPV6);
updated = true;
}
}
if (updated && default_gateway) {
if (default_gateway->ipv4_gateway)
set_default_gateway(default_gateway,
CONNMAN_IPCONFIG_TYPE_IPV4);
if (default_gateway->ipv6_gateway)
set_default_gateway(default_gateway,
CONNMAN_IPCONFIG_TYPE_IPV6);
}
return updated;
}
static bool choose_default_gateway(struct gateway_data *data,
struct gateway_data *candidate)
{
bool downgraded = false;
/*
* If the current default is not active, then we mark
* this one as default. If the other one is already active
* we mark this one as non default.
*/
if (data->ipv4_gateway) {
if (candidate->ipv4_gateway &&
!candidate->ipv4_gateway->active) {
DBG("ipv4 downgrading %p", candidate);
unset_default_gateway(candidate,
CONNMAN_IPCONFIG_TYPE_IPV4);
}
if (candidate->ipv4_gateway &&
candidate->ipv4_gateway->active &&
candidate->order > data->order) {
DBG("ipv4 downgrading this %p", data);
unset_default_gateway(data,
CONNMAN_IPCONFIG_TYPE_IPV4);
downgraded = true;
}
}
if (data->ipv6_gateway) {
if (candidate->ipv6_gateway &&
!candidate->ipv6_gateway->active) {
DBG("ipv6 downgrading %p", candidate);
unset_default_gateway(candidate,
CONNMAN_IPCONFIG_TYPE_IPV6);
}
if (candidate->ipv6_gateway &&
candidate->ipv6_gateway->active &&
candidate->order > data->order) {
DBG("ipv6 downgrading this %p", data);
unset_default_gateway(data,
CONNMAN_IPCONFIG_TYPE_IPV6);
downgraded = true;
}
}
return downgraded;
}
static gboolean choose_default_gateway(struct gateway_data *data,
struct gateway_data *candidate)
{
gboolean downgraded = FALSE;
/*
* If the current default is not active, then we mark
* this one as default. If the other one is already active
* we mark this one as non default.
*/
if (data->ipv4_gateway != NULL) {
if (candidate->ipv4_gateway != NULL &&
candidate->ipv4_gateway->active == FALSE) {
DBG("ipv4 downgrading %p", candidate);
unset_default_gateway(candidate,
CONNMAN_IPCONFIG_TYPE_IPV4);
}
if (candidate->ipv4_gateway != NULL &&
candidate->ipv4_gateway->active == TRUE &&
candidate->order > data->order) {
DBG("ipv4 downgrading this %p", data);
unset_default_gateway(data,
CONNMAN_IPCONFIG_TYPE_IPV4);
downgraded = TRUE;
}
}
if (data->ipv6_gateway != NULL) {
if (candidate->ipv6_gateway != NULL &&
candidate->ipv6_gateway->active == FALSE) {
DBG("ipv6 downgrading %p", candidate);
unset_default_gateway(candidate,
CONNMAN_IPCONFIG_TYPE_IPV6);
}
if (candidate->ipv6_gateway != NULL &&
candidate->ipv6_gateway->active == TRUE &&
candidate->order > data->order) {
DBG("ipv6 downgrading this %p", data);
unset_default_gateway(data,
CONNMAN_IPCONFIG_TYPE_IPV6);
downgraded = TRUE;
}
}
return downgraded;
}
