Maximum PDU size is defined by new BT Spec as 1492 octets.
Signed-off-by: NAndrei Emeltchenko <andrei.emeltchenko@intel.com>
Reviewed-by: NMat Martineau <mathewm@codeaurora.org>
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>

Add direction parameter to phylink_add since it is anyway set later.
Signed-off-by: NAndrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: NGustavo Padovan <gustavo.padovan@collabora.co.uk>

Add ctrl_id parameter to amp_ctrl_add since we always set it
after function ctrl is created.
Signed-off-by: NAndrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: NGustavo Padovan <gustavo.padovan@collabora.co.uk>

Move code dereferencing possible NULL pointer to the check branch.
Signed-off-by: NAndrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: NGustavo Padovan <gustavo.padovan@collabora.co.uk>

Check that link key exist before accessing.
Signed-off-by: NAndrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: NGustavo Padovan <gustavo.padovan@collabora.co.uk>

This patch removes core_data member from hci_dev struct as it is unused.
Signed-off-by: NRami Rosen <ramirose@gmail.com>
Acked-by: NMarcel Holtmann <marcel@holtmann.org>
Signed-off-by: NGustavo Padovan <gustavo.padovan@collabora.co.uk>

Return INVALID_CTRL_ID for unknown AMP controller and for BR/EDR
controller and fixes dereference possible NULL pointer.
Signed-off-by: NAndrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: NGustavo Padovan <gustavo.padovan@collabora.co.uk>

Add extra check to avoid skb buffer overflow. Fixes crash below:

 [  101.030427] ------------[ cut here ]------------
 [  101.030459] kernel BUG at net/core/skbuff.c:127!
 [  101.030486] invalid opcode: 0000 [#1] SMP
...
 [  101.030806] Pid: 2010, comm: btmrvl_main_ser Not tainted 3.5.0+ #80 Laptop
 [  101.030859] EIP: 0060:[<c14f2ba9>] EFLAGS: 00010282 CPU: 0
 [  101.030894] EIP is at skb_put+0x99/0xa0
 [  101.030919] EAX: 00000080 EBX: f129380b ECX: ef923540 EDX: 00000001
 [  101.030956] ESI: f00a4000 EDI: 00001003 EBP: ed4a5efc ESP: ed4a5ecc
 [  101.030992]  DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
 [  101.031024] CR0: 8005003b CR2: 08fca014 CR3: 30960000 CR4: 000407f0
 [  101.031062] DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000
 [  101.031100] DR6: ffff0ff0 DR7: 00000400
 [  101.031125] Process btmrvl_main_ser (pid: 2010, ti=ed4a4000 task=ef923540 task.ti=ed4a4000)
 [  101.031174] Stack:
 [  101.031188]  c18126f8 c1651938 f853f8d2 00001003 00001003 f1292800 f1292808 f129380b
 [  101.031250]  f1292940 f00a4000 eddb1280 efc0f9c0 ed4a5f44 f853f8d2 00000040 00000000
 [  101.031312]  ef923540 c15ee096 ef923540 eddb12d4 00000004 f00a4000 00000040 00000000
 [  101.031376] Call Trace:
 [  101.031396]  [<f853f8d2>] ? btmrvl_sdio_process_int_status+0x272/0x3d0 [btmrvl_sdio]
 [  101.031444]  [<f853f8d2>] btmrvl_sdio_process_int_status+0x272/0x3d0 [btmrvl_sdio]
 [  101.031488]  [<c15ee096>] ? _raw_spin_unlock_irqrestore+0x36/0x70
 [  101.031526]  [<f85a46e4>] btmrvl_service_main_thread+0x244/0x300 [btmrvl]
 [  101.031568]  [<f853fb50>] ? btmrvl_sdio_poll_card_status.isra.6.constprop.7+0x90/0x90 [btmrvl_sdio]
 [  101.031619]  [<c107eda0>] ? try_to_wake_up+0x270/0x270
 [  101.031648]  [<f85a44a0>] ? btmrvl_process_event+0x3b0/0x3b0 [btmrvl]
 [  101.031686]  [<c106d19d>] kthread+0x7d/0x90
 [  101.031713]  [<c106d120>] ? flush_kthread_work+0x150/0x150
 [  101.031745]  [<c15f5a82>] kernel_thread_helper+0x6/0x10
...
 [  101.032008] EIP: [<c14f2ba9>] skb_put+0x99/0xa0 SS:ESP 0068:ed4a5ecc
 [  101.056125] ---[ end trace a0bd01d1a9a796c8 ]---
Signed-off-by: NAndrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: NGustavo Padovan <gustavo.padovan@collabora.co.uk>

The kernel.h macro DIV_ROUND_UP performs the computation
(((n) + (d) - 1) / (d))
Signed-off-by: NAndrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: NGustavo Padovan <gustavo.padovan@collabora.co.uk>

Make code readable by correcting name from buf_block_len to num_blocks
since it represent number of blocks; NOT a length of a block buffer.
Signed-off-by: NAndrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: NGustavo Padovan <gustavo.padovan@collabora.co.uk>

Correct assoc_len and fix warning for x86-64 by using %zu specifier.
Reported-by: NFengguang Wu <fengguang.wu@intel.com>
Signed-off-by: NAndrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: NGustavo Padovan <gustavo.padovan@collabora.co.uk>

Correct warnings
Reported-by: NFengguang Wu <fengguang.wu@intel.com>
Signed-off-by: NAndrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: NGustavo Padovan <gustavo.padovan@collabora.co.uk>

Use function to factor out similar code. For BR/EDR send EFS
Configuration Response immediately, for HS response will be sent
after receiving HCI Logical Link Complete event in the following
patches.
Signed-off-by: NAndrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: NGustavo Padovan <gustavo.padovan@collabora.co.uk>

Use hci_chan as parameter instead of hci_conn as we need logical
handle from hci_chan for AMP link.
Signed-off-by: NAndrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: NGustavo Padovan <gustavo.padovan@collabora.co.uk>

batostr is not needed anymore since for printing Bluetooth
addresses we use %pMR specifier.
Signed-off-by: NAndrei Emeltchenko <andrei.emeltchenko@intel.com>
Acked-by: NMarcel Holtmann <marcel@holtmann.org>
Signed-off-by: NGustavo Padovan <gustavo.padovan@collabora.co.uk>

Use new bluetooth address print specifier %pMR for printing
bluetooth addresses instead of dedicated variable and baswap.
Signed-off-by: NAndrei Emeltchenko <andrei.emeltchenko@intel.com>
Acked-by: NMarcel Holtmann <marcel@holtmann.org>
Signed-off-by: NGustavo Padovan <gustavo.padovan@collabora.co.uk>

Instead of old unsafe batostr function use %pMR print specifier
for printing Bluetooth addresses in sprintf and seq_printf
statements.
Signed-off-by: NAndrei Emeltchenko <andrei.emeltchenko@intel.com>
Acked-by: NMarcel Holtmann <marcel@holtmann.org>
Signed-off-by: NGustavo Padovan <gustavo.padovan@collabora.co.uk>

Instead of old unsafe batostr function use %pMR print specifier
for printing Bluetooth addresses in debug and error statements.
Signed-off-by: NAndrei Emeltchenko <andrei.emeltchenko@intel.com>
Acked-by: NMarcel Holtmann <marcel@holtmann.org>
Signed-off-by: NGustavo Padovan <gustavo.padovan@collabora.co.uk>

The unpair process tries to disconnect any connection pending with
remote. If there are some connection in connecting state, disconnect
command will fail and unpair mgmt command will stay pending.

That pending mgmt command can cause strange behavior like automatic
unpair after a lost connection.
Signed-off-by: NJefferson Delfes <jefferson.delfes@openbossa.org>
Acked-by: NJohan Hedberg <johan.hedberg@intel.com>
Signed-off-by: NGustavo Padovan <gustavo.padovan@collabora.co.uk>

We just need to use the right modifiers
Signed-off-by: NGustavo Padovan <gustavo.padovan@collabora.co.uk>

When receiving HCI Command Status event for Accept Physical Link
execute HCI Write Remote AMP Assoc with data saved from A2MP Create
Physical Link Request.
Signed-off-by: NAndrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: NGustavo Padovan <gustavo.padovan@collabora.co.uk>

When receiving A2MP Create Physical Link message execute HCI
Accept Physical Link command to AMP controller.
Signed-off-by: NAndrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: NGustavo Padovan <gustavo.padovan@collabora.co.uk>

Channel Selected event indicates that link information data is available.
Read it with Read Local AMP Assoc command. The data shall be sent in the
A2MP Create Physical Link Request.
Signed-off-by: NAndrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: NGustavo Padovan <gustavo.padovan@collabora.co.uk>

When there is no remote AMP controller found fallback to normal
L2CAP sequence.
Signed-off-by: NAndrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: NGustavo Padovan <gustavo.padovan@collabora.co.uk>

When receiving HCI Command Status after HCI Create Physical Link
execute HCI Write Remote AMP Assoc command to AMP controller.
Signed-off-by: NAndrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: NGustavo Padovan <gustavo.padovan@collabora.co.uk>

When receiving A2MP Get AMP Assoc Response execute HCI Create Physical
Link to AMP controller. Define function which will run when receiving
HCI Command Status.
Signed-off-by: NAndrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: NGustavo Padovan <gustavo.padovan@collabora.co.uk>

Function calculates AMP keys using hmac_sha256 helper. Calculated keys
are Generic AMP Link Key (gamp) and Dedicated AMP Link Key with
keyID "802b" for 802.11 PAL.
Signed-off-by: NAndrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: NGustavo Padovan <gustavo.padovan@collabora.co.uk>

hmac(sha256) will be used for AMP key generation.
Signed-off-by: NDmitry Kasatkin <dmitry.kasatkin@intel.com>
Signed-off-by: NAndrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: NGustavo Padovan <gustavo.padovan@collabora.co.uk>

Choose which L2CAP connection to establish by checking support
for HS and remote side supported features.
Signed-off-by: NAndrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: NGustavo Padovan <gustavo.padovan@collabora.co.uk>

When receiving A2MP Get AMP Assoc Response save assoc data to remote
AMP controller list and prepare for creating physical link.
Signed-off-by: NAndrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: NGustavo Padovan <gustavo.padovan@collabora.co.uk>

Process A2MP Getinfo Response, send Get AMP Assoc Req.
Signed-off-by: NAndrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: NGustavo Padovan <gustavo.padovan@collabora.co.uk>

Use hci_conn structure to keep track about AMP physical connections.
Signed-off-by: NAndrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: NGustavo Padovan <gustavo.padovan@collabora.co.uk>

Create remote AMP controllers structure. It is used to keep information
about discovered remote AMP controllers by A2MP protocol.
Signed-off-by: NAndrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: NGustavo Padovan <gustavo.padovan@collabora.co.uk>

Define physical link structures. Physical links are represented by
hci_conn structure. For BR/EDR we use type ACL_LINK and for AMP
we use AMP_LINK.
Signed-off-by: NAndrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: NGustavo Padovan <gustavo.padovan@collabora.co.uk>

When receiving A2MP Discover Response send A2MP Get Info Request
for each AMP controller in the discovery list.
Signed-off-by: NAndrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: NGustavo Padovan <gustavo.padovan@collabora.co.uk>

When receiving A2MP Get AMP Assoc Request execute Read Local AMP Assoc
HCI command to AMP controller. If the AMP Assoc data is larger than it
can fit to HCI event only fragment is read. When all fragments are read
send A2MP Get AMP Assoc Response.
Signed-off-by: NAndrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: NGustavo Padovan <gustavo.padovan@collabora.co.uk>

When receiving A2MP Get Info Request execute Read Local AMP Info HCI
command to AMP controller with function to be executed upon receiving
command complete event. Function will handle A2MP Get Info Response.
Signed-off-by: NAndrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: NGustavo Padovan <gustavo.padovan@collabora.co.uk>

Create amp_mgr_list global list which will be used by different
hci devices to find amp_mgr.
Signed-off-by: NAndrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: NGustavo Padovan <gustavo.padovan@collabora.co.uk>

Add a few definitions to hci.h
Signed-off-by: NAndrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: NGustavo Padovan <gustavo.padovan@collabora.co.uk>