On Wed, Feb 08, 2012 at 03:47:35PM +0200, Luiz Augusto von Dentz wrote:
> From: Luiz Augusto von Dentz <luiz.von.dentz@xxxxxxxxx>
>
> l2cap_tx_window_full is not checking the window limit properly, first it
> computes based on sequence numbers which doesn't take into account the
> ReqSeq and always assume 64 not the real window size.
>
> To fix this now it just checks if the number of unacked frames is >= of
> tx window which is much simpler.
So what is the status with this patch?
Best regards
Andrei Emeltchenko
>
> Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@xxxxxxxxx>
> ---
> Add debug
>
> include/net/bluetooth/l2cap.h | 10 +++-------
> 1 files changed, 3 insertions(+), 7 deletions(-)
>
> diff --git a/include/net/bluetooth/l2cap.h b/include/net/bluetooth/l2cap.h
> index 42fdbb8..bcfddb2 100644
> --- a/include/net/bluetooth/l2cap.h
> +++ b/include/net/bluetooth/l2cap.h
> @@ -661,14 +661,10 @@ static inline __u16 __next_seq(struct l2cap_chan *chan, __u16 seq)
>
> static inline int l2cap_tx_window_full(struct l2cap_chan *ch)
> {
> - int sub;
> + BT_DBG("chan %p unacked %d tx_win %d", ch, ch->unacked_frames,
> + ch->remote_tx_win);
>
> - sub = (ch->next_tx_seq - ch->expected_ack_seq) % 64;
> -
> - if (sub < 0)
> - sub += 64;
> -
> - return sub == ch->remote_tx_win;
> + return ch->unacked_frames >= ch->remote_tx_win;
> }
>
> static inline __u16 __get_reqseq(struct l2cap_chan *chan, __u32 ctrl)
> --
> 1.7.7.6
>
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