static void ieee80211_auth_challenge(struct ieee80211_sub_if_data *sdata,
				     struct ieee80211_mgmt *mgmt, size_t len)
{
	struct ieee80211_local *local = sdata->local;
	struct ieee80211_mgd_auth_data *auth_data = sdata->u.mgd.auth_data;
	u8 *pos;
	struct ieee802_11_elems elems;
	u32 tx_flags = 0;

	pos = mgmt->u.auth.variable;
	ieee802_11_parse_elems(pos, len - (pos - (u8 *)mgmt), false, &elems,
			       mgmt->bssid, auth_data->bss->bssid);
	if (!elems.challenge)
		return;
	auth_data->expected_transaction = 4;
	drv_mgd_prepare_tx(sdata->local, sdata, 0);
	if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS))
		tx_flags = IEEE80211_TX_CTL_REQ_TX_STATUS |
			   IEEE80211_TX_INTFL_MLME_CONN_TX;
	ieee80211_send_auth(sdata, 3, auth_data->algorithm, 0,
			    elems.challenge - 2, elems.challenge_len + 2,
			    auth_data->bss->bssid, auth_data->bss->bssid,
			    auth_data->key, auth_data->key_len,
			    auth_data->key_idx, tx_flags);
}
static void ieee80211_auth_challenge(struct ieee80211_sub_if_data *sdata,
				     struct ieee80211_mgmt *mgmt, size_t len)
{
	struct ieee80211_local *local = sdata->local;
	struct ieee80211_mgd_auth_data *auth_data = sdata->u.mgd.auth_data;
	u8 *pos;
	struct ieee802_11_elems elems;
	u32 tx_flags = 0;

	pos = mgmt->u.auth.variable;
	ieee802_11_parse_elems(pos, len - (pos - (u8 *)mgmt), false, &elems,
			       mgmt->bssid, auth_data->bss->bssid);
	if (!elems.challenge)
		return;
	auth_data->expected_transaction = 4;
	drv_mgd_prepare_tx(sdata->local, sdata, 0);
	if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS))
		tx_flags = IEEE80211_TX_CTL_REQ_TX_STATUS |
			   IEEE80211_TX_INTFL_MLME_CONN_TX;
	ieee80211_send_auth(sdata, 3, auth_data->algorithm, 0,
			    elems.challenge - 2, elems.challenge_len + 2,
			    auth_data->bss->bssid, auth_data->bss->bssid,
			    auth_data->key, auth_data->key_len,
			    auth_data->key_idx, tx_flags);
}