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Commit 03f6715d authored by Andrei Emeltchenko's avatar Andrei Emeltchenko Committed by Gustavo Padovan
Browse files

Bluetooth: EWS: rewrite handling FINAL (F) bit 



Handle final (F) bit in L2CAP using information about control field type.

Signed-off-by: default avatarAndrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: default avatarGustavo F. Padovan <padovan@profusion.mobi>
parent 793c2f1c

include/net/bluetooth/l2cap.h

+15 −0
Original line number Diff line number Diff line
@@ -612,6 +612,21 @@ static inline __u32 __set_ctrl_super(struct l2cap_chan *chan, __u32 super) 
							L2CAP_CTRL_SUPERVISE;

}



static inline __u32 __set_ctrl_final(struct l2cap_chan *chan)

{

	if (test_bit(FLAG_EXT_CTRL, &chan->flags))

		return L2CAP_EXT_CTRL_FINAL;

	else

		return L2CAP_CTRL_FINAL;

}



static inline bool __is_ctrl_final(struct l2cap_chan *chan, __u32 ctrl)

{

	if (test_bit(FLAG_EXT_CTRL, &chan->flags))

		return ctrl & L2CAP_EXT_CTRL_FINAL;

	else

		return ctrl & L2CAP_CTRL_FINAL;

}

extern int disable_ertm;



int l2cap_init_sockets(void);

net/bluetooth/l2cap_core.c

+10 −10
Original line number Diff line number Diff line
@@ -582,7 +582,7 @@ static inline void l2cap_send_sframe(struct l2cap_chan *chan, u16 control) 
	control |= __set_sframe(chan);



	if (test_and_clear_bit(CONN_SEND_FBIT, &chan->conn_state))

		control |= L2CAP_CTRL_FINAL;

		control |= __set_ctrl_final(chan);



	if (test_and_clear_bit(CONN_SEND_PBIT, &chan->conn_state))

		control |= L2CAP_CTRL_POLL;
@@ -1315,7 +1315,7 @@ static void l2cap_retransmit_one_frame(struct l2cap_chan *chan, u16 tx_seq) 
	control &= __get_sar_mask(chan);



	if (test_and_clear_bit(CONN_SEND_FBIT, &chan->conn_state))

		control |= L2CAP_CTRL_FINAL;

		control |= __set_ctrl_final(chan);



	control |= __set_reqseq(chan, chan->buffer_seq);

	control |= __set_txseq(chan, tx_seq);
@@ -1355,7 +1355,7 @@ static int l2cap_ertm_send(struct l2cap_chan *chan) 
		control &= __get_sar_mask(chan);



		if (test_and_clear_bit(CONN_SEND_FBIT, &chan->conn_state))

			control |= L2CAP_CTRL_FINAL;

			control |= __set_ctrl_final(chan);



		control |= __set_reqseq(chan, chan->buffer_seq);

		control |= __set_txseq(chan, chan->next_tx_seq);
@@ -1428,7 +1428,7 @@ static void l2cap_send_srejtail(struct l2cap_chan *chan) 
	u16 control;



	control = __set_ctrl_super(chan, L2CAP_SUPER_SREJ);

	control |= L2CAP_CTRL_FINAL;

	control |= __set_ctrl_final(chan);



	tail = list_entry((&chan->srej_l)->prev, struct srej_list, list);

	control |= __set_reqseq(chan, tail->tx_seq);
@@ -3407,7 +3407,7 @@ static inline int l2cap_data_channel_iframe(struct l2cap_chan *chan, u16 rx_cont 
	BT_DBG("chan %p len %d tx_seq %d rx_control 0x%4.4x", chan, skb->len,

							tx_seq, rx_control);



	if (L2CAP_CTRL_FINAL & rx_control &&

	if (__is_ctrl_final(chan, rx_control) &&

			test_bit(CONN_WAIT_F, &chan->conn_state)) {

		__clear_monitor_timer(chan);

		if (chan->unacked_frames > 0)
@@ -3512,7 +3512,7 @@ expected: 
		return err;

	}



	if (rx_control & L2CAP_CTRL_FINAL) {

	if (__is_ctrl_final(chan, rx_control)) {

		if (!test_and_clear_bit(CONN_REJ_ACT, &chan->conn_state))

			l2cap_retransmit_frames(chan);

	}
@@ -3551,7 +3551,7 @@ static inline void l2cap_data_channel_rrframe(struct l2cap_chan *chan, u16 rx_co 
			l2cap_send_i_or_rr_or_rnr(chan);

		}



	} else if (rx_control & L2CAP_CTRL_FINAL) {

	} else if (__is_ctrl_final(chan, rx_control)) {

		clear_bit(CONN_REMOTE_BUSY, &chan->conn_state);



		if (!test_and_clear_bit(CONN_REJ_ACT, &chan->conn_state))
@@ -3581,7 +3581,7 @@ static inline void l2cap_data_channel_rejframe(struct l2cap_chan *chan, u16 rx_c 
	chan->expected_ack_seq = tx_seq;

	l2cap_drop_acked_frames(chan);



	if (rx_control & L2CAP_CTRL_FINAL) {

	if (__is_ctrl_final(chan, rx_control)) {

		if (!test_and_clear_bit(CONN_REJ_ACT, &chan->conn_state))

			l2cap_retransmit_frames(chan);

	} else {
@@ -3612,7 +3612,7 @@ static inline void l2cap_data_channel_srejframe(struct l2cap_chan *chan, u16 rx_ 
			chan->srej_save_reqseq = tx_seq;

			set_bit(CONN_SREJ_ACT, &chan->conn_state);

		}

	} else if (rx_control & L2CAP_CTRL_FINAL) {

	} else if (__is_ctrl_final(chan, rx_control)) {

		if (test_bit(CONN_SREJ_ACT, &chan->conn_state) &&

				chan->srej_save_reqseq == tx_seq)

			clear_bit(CONN_SREJ_ACT, &chan->conn_state);
@@ -3659,7 +3659,7 @@ static inline int l2cap_data_channel_sframe(struct l2cap_chan *chan, u16 rx_cont 
{

	BT_DBG("chan %p rx_control 0x%4.4x len %d", chan, rx_control, skb->len);



	if (L2CAP_CTRL_FINAL & rx_control &&

	if (__is_ctrl_final(chan, rx_control) &&

			test_bit(CONN_WAIT_F, &chan->conn_state)) {

		__clear_monitor_timer(chan);

		if (chan->unacked_frames > 0)