Define AMP Manager and some basic functions.
Signed-off-by: NAndrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: NGustavo Padovan <gustavo.padovan@collabora.co.uk>

Create and initialize fixed A2MP channel
Signed-off-by: NAndrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: NGustavo Padovan <gustavo.padovan@collabora.co.uk>

Signed-off-by: NAndrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: NGustavo Padovan <gustavo.padovan@collabora.co.uk>

Move this check to before the channel time creation simplifies the code
and avoid memory allocation if the channel already exist.
Signed-off-by: NGustavo Padovan <gustavo.padovan@collabora.co.uk>
Acked-by: NAndrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: NMarcel Holtmann <marcel@holtmann.org>

Remove socket specific code from l2cap_core.c
Signed-off-by: NGustavo Padovan <gustavo.padovan@collabora.co.uk>
Acked-by: NAndrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: NMarcel Holtmann <marcel@holtmann.org>

These vars are kept in sync so we can use chan->state here.
Signed-off-by: NGustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: NMarcel Holtmann <marcel@holtmann.org>

This move socket specific code to l2cap_sock.c.
Signed-off-by: NAndrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: NGustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: NMarcel Holtmann <marcel@holtmann.org>

This remove a bit more of socket code from l2cap core, this calls set the
SOCK_ZAPPED and do some clean up depending on the socket state.
Reported-by: NMat Martineau <mathewm@codeaurora.org>
Signed-off-by: NAndrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: NGustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: NMarcel Holtmann <marcel@holtmann.org>

Use chan instead of void * makes more sense here.
Signed-off-by: NGustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: NMarcel Holtmann <marcel@holtmann.org>

Commit fc50744c ("Bluetooth: Fix registering hci with duplicate name") didn't
fully fix the duplicate naming issue with devices, and duplicate device names
could still be created:

[  142.484097] device: 'hci1': device_add
[...]
[  150.545263] device: 'hci1': device_add
[  150.550128] kobject: 'hci1' (ffff880014cc4e58): kobject_add_internal: parent: 'bluetooth', set: 'devices'
[  150.558979] ------------[ cut here ]------------
[  150.561438] WARNING: at fs/sysfs/dir.c:529 sysfs_add_one+0xb0/0xd0()
[  150.572974] Hardware name: Bochs
[  150.580502] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci1'
[  150.584444] Pid: 7563, comm: trinity-child1 Tainted: G        W    3.4.0-next-20120524-sasha #296
[...]

Instead of the weird logic and the attempt at keeping the device list sorted,
just use an IDA.
Signed-off-by: NSasha Levin <levinsasha928@gmail.com>
Signed-off-by: NMarcel Holtmann <marcel@holtmann.org>

This replace code in l2cap_le_conn_ready() by a similar code in
l2cap_chan_ready().
Signed-off-by: NGustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: NMarcel Holtmann <marcel@holtmann.org>

This is already performed inside l2cap_chan_ready(), so we don't need it
here again.
Signed-off-by: NGustavo Padovan <gustavo.padovan@collabora.co.uk>
Acked-by: NAndrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: NMarcel Holtmann <marcel@holtmann.org>

Both FCS and Extended header might be or might not be present in a ERTM
channel.
Signed-off-by: NGustavo Padovan <gustavo.padovan@collabora.co.uk>
Reviewed-by: NMat Martineau <mathewm@codeaurora.org>
Signed-off-by: NMarcel Holtmann <marcel@holtmann.org>

Add HCI commands to deal with Bluetooth AMP controllers.
Those commands will be used by bluetooth and softamp code.
Signed-off-by: NAndrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: NMarcel Holtmann <marcel@holtmann.org>

Signed-off-by: NAndrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: NMarcel Holtmann <marcel@holtmann.org>

__constant_cpu_to_le16() is the right go here.
Signed-off-by: NAndrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: NGustavo Padovan <gustavo.padovan@collabora.co.uk>

Define assigned Protocol and Service Multiplexor (PSM) identifiers
and use them instead of magic numbers.
Signed-off-by: NAndrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: NGustavo Padovan <gustavo.padovan@collabora.co.uk>

Make the check more user friendly.
Signed-off-by: NGustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: NMarcel Holtmann <marcel@holtmann.org>

SD8787 SDIO function 3 (device ID 0x911B) is for Bluetooth AMP.
Signed-off-by: NBing Zhao <bzhao@marvell.com>
Signed-off-by: NGustavo Padovan <gustavo.padovan@collabora.co.uk>

Sometimes an ACL link must be raised to a higher security level after
an L2CAP connection is requested, but before a connection response is
sent.  In this case, a connection response sent by L2CAP was not
immediately followed by a configuration request.  Other code paths do
send this configuration request right away.  It was possible for the
connection to stall while L2CAP waited for the remote device (like
PTS) to trigger the configuration process.

Here is an abbreviated hcidump of the failure case with PTS:

1337806446.051982 > ACL data: handle 43 flags 0x02 dlen 10
    L2CAP(s): Info req: type 2
1337806446.052050 < ACL data: handle 43 flags 0x00 dlen 16
    L2CAP(s): Info rsp: type 2 result 0
      Extended feature mask 0x000000b8
1337806446.595320 > ACL data: handle 43 flags 0x02 dlen 12
    L2CAP(s): Connect req: psm 4097 scid 0x0041
1337806446.595673 < ACL data: handle 43 flags 0x00 dlen 16
    L2CAP(s): Connect rsp: dcid 0x0040 scid 0x0041 result 1 status 0
1337806446.595679 < ACL data: handle 43 flags 0x00 dlen 10
    L2CAP(s): Info req: type 2
1337806446.669835 > ACL data: handle 43 flags 0x02 dlen 16
    L2CAP(s): Info rsp: type 2 result 0
      Extended feature mask 0x00000028
1337806446.669899 < HCI Command: Authentication Requested (0x01|0x0011) plen 2
1337806446.669906 < ACL data: handle 43 flags 0x00 dlen 16
    L2CAP(s): Connect rsp: dcid 0x0040 scid 0x0041 result 1 status 1
<security setup here>
1337806446.769888 < ACL data: handle 43 flags 0x00 dlen 16
    L2CAP(s): Connect rsp: dcid 0x0040 scid 0x0041 result 0 status 0

At this point, the connection stalls and no further messages are sent
on the L2CAP signaling channel.  No data is received either.

If we immediately send a configuration request after a successful connect
response, the connection completes:

1337724090.041162 > ACL data: handle 43 flags 0x02 dlen 10
    L2CAP(s): Info req: type 2
1337724090.041236 < ACL data: handle 43 flags 0x00 dlen 16
    L2CAP(s): Info rsp: type 2 result 0
      Extended feature mask 0x000000b8
1337724090.597128 > ACL data: handle 43 flags 0x02 dlen 12
    L2CAP(s): Connect req: psm 4097 scid 0x0041
1337724090.597236 < ACL data: handle 43 flags 0x00 dlen 16
    L2CAP(s): Connect rsp: dcid 0x0040 scid 0x0041 result 1 status 0
1337724090.597244 < ACL data: handle 43 flags 0x00 dlen 10
    L2CAP(s): Info req: type 2
1337724090.660842 > ACL data: handle 43 flags 0x02 dlen 16
    L2CAP(s): Info rsp: type 2 result 0
      Extended feature mask 0x00000028
1337724090.660926 < HCI Command: Authentication Requested (0x01|0x0011) plen 2
1337724090.660934 < ACL data: handle 43 flags 0x00 dlen 16
    L2CAP(s): Connect rsp: dcid 0x0040 scid 0x0041 result 1 status 1
<security setup here>
1337724090.755162 < ACL data: handle 43 flags 0x00 dlen 16
    L2CAP(s): Connect rsp: dcid 0x0040 scid 0x0041 result 0 status 0
1337724090.755171 < ACL data: handle 43 flags 0x00 dlen 23
    L2CAP(s): Config req: dcid 0x0041 flags 0x00 clen 11
1337724091.361847 > ACL data: handle 43 flags 0x02 dlen 29
    L2CAP(s): Config rsp: scid 0x0040 flags 0x00 result 0 clen 15
1337724091.863808 > ACL data: handle 43 flags 0x02 dlen 23
    L2CAP(s): Config req: dcid 0x0040 flags 0x00 clen 11
1337724091.863882 < ACL data: handle 43 flags 0x00 dlen 29
    L2CAP(s): Config rsp: scid 0x0041 flags 0x00 result 0 clen 15
1337724092.683745 > ACL data: handle 43 flags 0x02 dlen 12
    L2CAP(d): cid 0x0040 len 8 [psm 4097]
      0000: 00 00 11 22 33 44 34 2f                           ..."3D4/
Signed-off-by: NMat Martineau <mathewm@codeaurora.org>
Signed-off-by: NMarcel Holtmann <marcel@holtmann.org>

Define Continuation flag which the only flag used from Flags field
in L2CAP Configuration Request and Response.
Signed-off-by: NAndrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: NMarcel Holtmann <marcel@holtmann.org>

After l2cap, sco and bluetooth modules merge some symbols doesn't need to
be exported anymore.
Signed-off-by: NGustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: NMarcel Holtmann <marcel@holtmann.org>

Most of the include were unnecessary or already included by some other
header.
Replace module.h by export.h where possible.
Signed-off-by: NGustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: NMarcel Holtmann <marcel@holtmann.org>

This is some leftover from the last patches that fixed style. It is mostly
line over 80 characters fixes reported by checkpatch.pl.
checkpatch.pl is clean for these files now.
Signed-off-by: NGustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: NMarcel Holtmann <marcel@holtmann.org>

Fix all warning and errors reported by checkpatch but license trailing
whitespace and bdaddr_t definition.
Signed-off-by: NGustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: NMarcel Holtmann <marcel@holtmann.org>

Let the compiler chooses what is best.
Signed-off-by: NGustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: NMarcel Holtmann <marcel@holtmann.org>

Only obvious cases were left as inline, mostly oneline functions.
Signed-off-by: NGustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: NMarcel Holtmann <marcel@holtmann.org>

Signed-off-by: NAndrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: NMarcel Holtmann <marcel@holtmann.org>

Previous callers of l2cap_build_conf_rsp in l2cap_config_req use
flags instead of continuation flag hardcoded value. It does not change
logic and preserve future possible flags.
Signed-off-by: NAndrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: NMarcel Holtmann <marcel@holtmann.org>

Remove magic number with defined link key size.
Signed-off-by: NAndrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: NMarcel Holtmann <marcel@holtmann.org>

HCI_QUIRK_NO_RESET name is misleading - purpose of this quirk is to
reset device on close instead of init, not to not reset at all.
Rename it to HCI_QUIRK_RESET_ON_CLOSE to avoid confusion.
Signed-off-by: NSzymon Janc <szymon.janc@tieto.com>
Signed-off-by: NMarcel Holtmann <marcel@holtmann.org>

As reported by checkpatch.pl
Signed-off-by: NGustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: NMarcel Holtmann <marcel@holtmann.org>

These functions were returning always 0, we just make then void.
Signed-off-by: NGustavo Padovan <gustavo.padovan@collabora.co.uk>
Reviewed-by: NMat Martineau <mathewm@codeaurora.org>
Signed-off-by: NMarcel Holtmann <marcel@holtmann.org>

The same check is done just before call l2cap_streaming_send()
Signed-off-by: NGustavo Padovan <gustavo.padovan@collabora.co.uk>
Reviewed-by: NMat Martineau <mathewm@codeaurora.org>
Signed-off-by: NMarcel Holtmann <marcel@holtmann.org>

Silence warnings below:

net/bluetooth/l2cap_core.c:1662:24: warning: Using plain integer
as NULL pointer
net/bluetooth/l2cap_core.c:1662:27: warning: Using plain integer
as NULL pointer
net/bluetooth/l2cap_core.c:1683:24: warning: Using plain integer
as NULL pointer
net/bluetooth/l2cap_core.c:1683:27: warning: Using plain integer
as NULL pointer
net/bluetooth/l2cap_core.c:2260:46: warning: Using plain integer
as NULL pointer
net/bluetooth/l2cap_core.c:2574:33: warning: Using plain integer
as NULL pointer
net/bluetooth/l2cap_core.c:2581:33: warning: Using plain integer
as NULL pointer
net/bluetooth/l2cap_core.c:4556:24: warning: Using plain integer
as NULL pointer
net/bluetooth/l2cap_core.c:4556:27: warning: Using plain integer
as NULL pointer
Signed-off-by: NAndrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: NGustavo Padovan <gustavo.padovan@collabora.co.uk>

chan->tx_q is only initialized if we use ERTM or Streaming mode.
Signed-off-by: NGustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: NMarcel Holtmann <marcel@holtmann.org>

This enables the new receive and transmit state machines.
Signed-off-by: NMat Martineau <mathewm@codeaurora.org>
Signed-off-by: NGustavo Padovan <gustavo.padovan@collabora.co.uk>

Now that l2cap_ctrl is used to set up control fields, these macros are
not needed.
Signed-off-by: NMat Martineau <mathewm@codeaurora.org>
Signed-off-by: NGustavo Padovan <gustavo.padovan@collabora.co.uk>

The transmit window values must be configured for streaming mode, even
though streaming mode does not have a window.  This enables use of
extended headers when the transmit window socket option is set to 64
or larger.
Signed-off-by: NMat Martineau <mathewm@codeaurora.org>
Signed-off-by: NGustavo Padovan <gustavo.padovan@collabora.co.uk>

Let the compiler decide if inlining is appropriate.
Signed-off-by: NMat Martineau <mathewm@codeaurora.org>
Signed-off-by: NGustavo Padovan <gustavo.padovan@collabora.co.uk>