* Marcel Holtmann <marcel@xxxxxxxxxxxx> [2011-07-02 15:11:51 -0700]:
> Hi Peter,
>
> > A 0-length ACL continuation-fragment is a valid NULL packet. Remote
> > devices can use the FLOW indicator in the ACL packet header to
> > flow-control ACL packets without sending a payload.
> >
> > Track as a device stat instead of logging.
> >
> > Signed-off-by: Peter Hurley <peter@xxxxxxxxxxxxxxxxxx>
> > ---
> > include/net/bluetooth/hci.h | 1 +
> > net/bluetooth/l2cap_core.c | 8 ++++++++
> > 2 files changed, 9 insertions(+), 0 deletions(-)
> >
> > diff --git a/include/net/bluetooth/hci.h b/include/net/bluetooth/hci.h
> > index 0c20227..de7ed81 100644
> > --- a/include/net/bluetooth/hci.h
> > +++ b/include/net/bluetooth/hci.h
> > @@ -1142,6 +1142,7 @@ struct hci_ufilter {
> >
> > /* ---- HCI Ioctl requests structures ---- */
> > struct hci_dev_stats {
> > + __u32 null_rx; /* # NULL pkts recvd */
> > __u32 err_rx;
> > __u32 err_tx;
> > __u32 cmd_tx;
>
> you can not do it like this. This will break userspace API/ABI.
Actually I don't see a point to have null_rx counter, just drop the packet and
we are done.
Gustavo
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