BNAD_TXQ_FREE_SENT
if (test_and_set_bit(BNAD_TXQ_FREE_SENT, &tcb->flags)) {
clear_bit(BNAD_TXQ_FREE_SENT, &tcb->flags);
if (test_and_set_bit(BNAD_TXQ_FREE_SENT, &tcb->flags))
clear_bit(BNAD_TXQ_FREE_SENT, &tcb->flags);
!test_and_set_bit(BNAD_TXQ_FREE_SENT, &tcb->flags)) {
clear_bit(BNAD_TXQ_FREE_SENT, &tcb->flags);