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Commit 7e743090 authored by Gustavo Padovan's avatar Gustavo Padovan Committed by Marcel Holtmann
Browse files

Bluetooth: Add support for L2CAP 'Send RRorRNR' action 



When called, 'Send RRorRNR' should send a RNR frame if local device is
busy or a RR frame otherwise.

Signed-off-by: default avatarGustavo F. Padovan <gustavo@las.ic.unicamp.br>
Signed-off-by: default avatarMarcel Holtmann <marcel@holtmann.org>
parent 2246b2f1

net/bluetooth/l2cap.c

+14 −6
Original line number Diff line number Diff line
@@ -366,6 +366,16 @@ static inline int l2cap_send_sframe(struct l2cap_pinfo *pi, u16 control) 
	return hci_send_acl(pi->conn->hcon, skb, 0);

}



static inline int l2cap_send_rr_or_rnr(struct l2cap_pinfo *pi, u16 control)

{

	if (pi->conn_state & L2CAP_CONN_LOCAL_BUSY)

		control |= L2CAP_SUPER_RCV_NOT_READY;

	else

		control |= L2CAP_SUPER_RCV_READY;



	return l2cap_send_sframe(pi, control);

}



static void l2cap_do_start(struct sock *sk)

{

	struct l2cap_conn *conn = l2cap_pi(sk)->conn;
@@ -1202,8 +1212,7 @@ static void l2cap_monitor_timeout(unsigned long arg) 
	__mod_monitor_timer();



	control = L2CAP_CTRL_POLL;

	control |= L2CAP_SUPER_RCV_READY;

	l2cap_send_sframe(l2cap_pi(sk), control);

	l2cap_send_rr_or_rnr(l2cap_pi(sk), control);

	bh_unlock_sock(sk);

}
@@ -1219,8 +1228,7 @@ static void l2cap_retrans_timeout(unsigned long arg) 
	l2cap_pi(sk)->conn_state |= L2CAP_CONN_WAIT_F;



	control = L2CAP_CTRL_POLL;

	control |= L2CAP_SUPER_RCV_READY;

	l2cap_send_sframe(l2cap_pi(sk), control);

	l2cap_send_rr_or_rnr(l2cap_pi(sk), control);

	bh_unlock_sock(sk);

}
@@ -3428,8 +3436,8 @@ static inline int l2cap_data_channel_sframe(struct sock *sk, u16 rx_control, str 


		del_timer(&l2cap_pi(sk)->retrans_timer);

		if (rx_control & L2CAP_CTRL_POLL) {

			u16 control = L2CAP_CTRL_FINAL | L2CAP_SUPER_RCV_READY;

			l2cap_send_sframe(l2cap_pi(sk), control);

			u16 control = L2CAP_CTRL_FINAL;

			l2cap_send_rr_or_rnr(l2cap_pi(sk), control);

		}

		break;

	}