Bluetooth: Ack L2CAP I-frames before retransmit missing packet (186ee8cf) · Commits · 戴 / test

Moving the Ack to before l2cap_retransmit_frame() we can avoid the case where txWindow is full and the packet can't be retransmited. Signed-off-by:

net/bluetooth/l2cap.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -3471,9 +3471,9 @@ static inline int l2cap_data_channel_sframe(struct sock *sk, u16 rx_control, str
		pi->conn_state &= ~L2CAP_CONN_REMOTE_BUSY;

		if (rx_control & L2CAP_CTRL_POLL) {
		l2cap_retransmit_frame(sk, tx_seq);
		pi->expected_ack_seq = tx_seq;
		l2cap_drop_acked_frames(sk);
		l2cap_retransmit_frame(sk, tx_seq);
		l2cap_ertm_send(sk);
		if (pi->conn_state & L2CAP_CONN_WAIT_F) {
		pi->srej_save_reqseq = tx_seq;