Bluetooth: EWS: rewrite handling POLL (P) bit

Handle POLL (P) bit in L2CAP ERTM using information about control field type.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>

diff --git a/include/net/bluetooth/l2cap.h b/include/net/bluetooth/l2cap.h
index 3110c43..67a2fdb 100644 (file)
--- a/include/net/bluetooth/l2cap.h
+++ b/include/net/bluetooth/l2cap.h
@@ -627,6 +627,22 @@ static inline bool __is_ctrl_final(struct l2cap_chan *chan, __u32 ctrl)
        else
                return ctrl & L2CAP_CTRL_FINAL;
 }
+
+static inline __u32 __set_ctrl_poll(struct l2cap_chan *chan)
+{
+       if (test_bit(FLAG_EXT_CTRL, &chan->flags))
+               return L2CAP_EXT_CTRL_POLL;
+       else
+               return L2CAP_CTRL_POLL;
+}
+
+static inline bool __is_ctrl_poll(struct l2cap_chan *chan, __u32 ctrl)
+{
+       if (test_bit(FLAG_EXT_CTRL, &chan->flags))
+               return ctrl & L2CAP_EXT_CTRL_POLL;
+       else
+               return ctrl & L2CAP_CTRL_POLL;
+}
 extern int disable_ertm;
 
 int l2cap_init_sockets(void);

diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c
index c500d1c..97aa545 100644 (file)
--- a/net/bluetooth/l2cap_core.c
+++ b/net/bluetooth/l2cap_core.c
@@ -585,7 +585,7 @@ static inline void l2cap_send_sframe(struct l2cap_chan *chan, u16 control)
                control |= __set_ctrl_final(chan);
 
        if (test_and_clear_bit(CONN_SEND_PBIT, &chan->conn_state))
-               control |= L2CAP_CTRL_POLL;
+               control |= __set_ctrl_poll(chan);
 
        skb = bt_skb_alloc(count, GFP_ATOMIC);
        if (!skb)
@@ -3304,7 +3304,7 @@ static void l2cap_ertm_exit_local_busy(struct l2cap_chan *chan)
                goto done;
 
        control = __set_reqseq(chan, chan->buffer_seq);
-       control |= L2CAP_CTRL_POLL;
+       control |= __set_ctrl_poll(chan);
        control |= __set_ctrl_super(chan, L2CAP_SUPER_RR);
        l2cap_send_sframe(chan, control);
        chan->retry_count = 1;
@@ -3538,7 +3538,7 @@ static inline void l2cap_data_channel_rrframe(struct l2cap_chan *chan, u16 rx_co
        chan->expected_ack_seq = __get_reqseq(chan, rx_control);
        l2cap_drop_acked_frames(chan);
 
-       if (rx_control & L2CAP_CTRL_POLL) {
+       if (__is_ctrl_poll(chan, rx_control)) {
                set_bit(CONN_SEND_FBIT, &chan->conn_state);
                if (test_bit(CONN_SREJ_SENT, &chan->conn_state)) {
                        if (test_bit(CONN_REMOTE_BUSY, &chan->conn_state) &&
@@ -3599,7 +3599,7 @@ static inline void l2cap_data_channel_srejframe(struct l2cap_chan *chan, u16 rx_
 
        clear_bit(CONN_REMOTE_BUSY, &chan->conn_state);
 
-       if (rx_control & L2CAP_CTRL_POLL) {
+       if (__is_ctrl_poll(chan, rx_control)) {
                chan->expected_ack_seq = tx_seq;
                l2cap_drop_acked_frames(chan);
 
@@ -3637,17 +3637,17 @@ static inline void l2cap_data_channel_rnrframe(struct l2cap_chan *chan, u16 rx_c
        chan->expected_ack_seq = tx_seq;
        l2cap_drop_acked_frames(chan);
 
-       if (rx_control & L2CAP_CTRL_POLL)
+       if (__is_ctrl_poll(chan, rx_control))
                set_bit(CONN_SEND_FBIT, &chan->conn_state);
 
        if (!test_bit(CONN_SREJ_SENT, &chan->conn_state)) {
                __clear_retrans_timer(chan);
-               if (rx_control & L2CAP_CTRL_POLL)
+               if (__is_ctrl_poll(chan, rx_control))
                        l2cap_send_rr_or_rnr(chan, L2CAP_CTRL_FINAL);
                return;
        }
 
-       if (rx_control & L2CAP_CTRL_POLL) {
+       if (__is_ctrl_poll(chan, rx_control)) {
                l2cap_send_srejtail(chan);
        } else {
                rx_control = __set_ctrl_super(chan, L2CAP_SUPER_RR);