linux-toradex.git/net/bluetooth/a2mp.c, branch v4.11

locking/atomic, kref: Add kref_read()

2017-01-14T10:37:18+00:00

Since we need to change the implementation, stop exposing internals.

Provide kref_read() to read the current reference count; typically
used for debug messages.

Kills two anti-patterns:

	atomic_read(&kref->refcount)
	kref->refcount.counter

Signed-off-by: Peter Zijlstra (Intel) 
Cc: Andrew Morton 
Cc: Greg Kroah-Hartman 
Cc: Linus Torvalds 
Cc: Paul E. McKenney 
Cc: Peter Zijlstra 
Cc: Thomas Gleixner 
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar

Bluetooth: Move get info completed callback to a2mp.c

2015-07-30T11:37:22+00:00

To avoid a2mp module hooks from hci_event.c and send
getinfo response operation only required by a2mp module,
we can move this callback to a2mp.c

Signed-off-by: Arron Wang 
Signed-off-by: Marcel Holtmann

Bluetooth: Make __next_ident function static.

2015-02-15T08:14:54+00:00

The __next_ident function is a local function and so do not export it
and make it static.

Signed-off-by: Marcel Holtmann 
Signed-off-by: Johan Hedberg

Bluetooth: Make a2mp_send function static

2015-02-15T08:14:52+00:00

The a2mp_send function is a local function and so do not export it
and make it static.

Signed-off-by: Marcel Holtmann 
Signed-off-by: Johan Hedberg

Bluetooth: Make amp_mgr_lookup_by_state function static

2015-02-15T08:14:51+00:00

The amp_mgr_lookup_by_state function does not need to be exported. So
just move it to a different location and make it static.

Signed-off-by: Marcel Holtmann 
Signed-off-by: Johan Hedberg

Bluetooth: Make amp_mgr_list and amp_mgr_list_lock static

2015-02-15T08:14:49+00:00

There is no reason to have amp_mgr_list and amp_mgr_list_lock exported
from a2mp.c and thus make both of them static.

Signed-off-by: Marcel Holtmann 
Signed-off-by: Johan Hedberg

Bluetooth: Move A2MP_FEAT_EXT declaration into A2MP source

2015-02-15T08:14:48+00:00

The A2MP_FEAT_EXT declaration has a single user in a2mp.c and thus
just move it there.

Signed-off-by: Marcel Holtmann 
Signed-off-by: Johan Hedberg

first fruits - kill l2cap ->memcpy_fromiovec()

2014-12-09T21:29:10+00:00

Just use copy_from_iter().  That's what this method is trying to do
in all cases, in a very convoluted fashion.

Signed-off-by: Al Viro

put iov_iter into msghdr

2014-12-09T21:29:03+00:00

Note that the code _using_ ->msg_iter at that point will be very
unhappy with anything other than unshifted iovec-backed iov_iter.
We still need to convert users to proper primitives.

Signed-off-by: Al Viro

Bluetooth: Provide L2CAP ops callback for memcpy_fromiovec

2014-07-03T15:42:43+00:00

The highly optimized TX path for L2CAP channels and its fragmentation
within the HCI ACL packets requires to copy data from user provided
IO vectors and also kernel provided memory buffers.

This patch allows channel clients to provide a memcpy_fromiovec callback
to keep this optimized behavior, but adapt it to kernel vs user memory
for the TX path. For all kernel internal L2CAP channels, a default
implementation is provided that can be referenced.

In case of A2MP, this fixes a long-standing issue with wrongly accessing
kernel memory as user memory.

This patch originally by Marcel Holtmann.

Signed-off-by: Jukka Rissanen 
Signed-off-by: Marcel Holtmann