BRCMF_MGMT_TX_ACK
clear_bit(BRCMF_MGMT_TX_ACK, &vif->mgmt_tx_status);
if (test_bit(BRCMF_MGMT_TX_ACK, &vif->mgmt_tx_status)) {
set_bit(BRCMF_MGMT_TX_ACK, &vif->mgmt_tx_status);