l2cap_ertm_seq_in_queue
skb = l2cap_ertm_seq_in_queue(&chan->tx_q, seq);
if (!l2cap_ertm_seq_in_queue(&chan->srej_q, seq)) {
acked_skb = l2cap_ertm_seq_in_queue(&chan->tx_q, ackseq);
skb = l2cap_ertm_seq_in_queue(&chan->srej_q, chan->buffer_seq);
skb = l2cap_ertm_seq_in_queue(&chan->tx_q, control->reqseq);
skb = l2cap_ertm_seq_in_queue(&chan->tx_q, control->reqseq);
if (l2cap_ertm_seq_in_queue(&chan->srej_q, txseq)) {