static struct gas_dialog_info *
gas_dialog_create(struct hostapd_data *hapd, const u8 *addr, u8 dialog_token)
{
struct sta_info *sta;
struct gas_dialog_info *dia = NULL;
int i, j;
sta = ap_get_sta(hapd, addr);
if (!sta) {
/*
* We need a STA entry to be able to maintain state for
* the GAS query.
*/
wpa_printf(MSG_DEBUG, "ANQP: Add a temporary STA entry for "
"GAS query");
sta = ap_sta_add(hapd, addr);
if (!sta) {
wpa_printf(MSG_DEBUG, "Failed to add STA " MACSTR
" for GAS query", MAC2STR(addr));
return NULL;
}
sta->flags |= WLAN_STA_GAS;
/*
* The default inactivity is 300 seconds. We don't need
* it to be that long.
*/
ap_sta_session_timeout(hapd, sta, 5);
} else {
ap_sta_replenish_timeout(hapd, sta, 5);
}
if (sta->gas_dialog == NULL) {
sta->gas_dialog = os_zalloc(GAS_DIALOG_MAX *
sizeof(struct gas_dialog_info));
if (sta->gas_dialog == NULL)
return NULL;
}
for (i = sta->gas_dialog_next, j = 0; j < GAS_DIALOG_MAX; i++, j++) {
if (i == GAS_DIALOG_MAX)
i = 0;
if (sta->gas_dialog[i].valid)
continue;
dia = &sta->gas_dialog[i];
dia->valid = 1;
dia->index = i;
dia->dialog_token = dialog_token;
sta->gas_dialog_next = (++i == GAS_DIALOG_MAX) ? 0 : i;
return dia;
}
wpa_msg(hapd->msg_ctx, MSG_ERROR, "ANQP: Could not create dialog for "
MACSTR " dialog_token %u. Consider increasing "
"GAS_DIALOG_MAX.", MAC2STR(addr), dialog_token);
return NULL;
}
struct gas_dialog_info *
gas_serv_dialog_find(struct hostapd_data *hapd, const u8 *addr,
u8 dialog_token)
{
struct sta_info *sta;
int i;
sta = ap_get_sta(hapd, addr);
if (!sta) {
wpa_printf(MSG_DEBUG, "ANQP: could not find STA " MACSTR,
MAC2STR(addr));
return NULL;
}
for (i = 0; sta->gas_dialog && i < GAS_DIALOG_MAX; i++) {
if (sta->gas_dialog[i].dialog_token != dialog_token ||
!sta->gas_dialog[i].valid)
continue;
ap_sta_replenish_timeout(hapd, sta, 5);
return &sta->gas_dialog[i];
}
wpa_printf(MSG_DEBUG, "ANQP: Could not find dialog for "
MACSTR " dialog_token %u", MAC2STR(addr), dialog_token);
return NULL;
}
