ath10k: clean up phyerr code

Make the phyerr structures more compact and easier
to understand. Also add constness.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

ath10k: deduplicate wmi service ready logic

The logic responsible for processing the event is
no different across different firmware binaries.
The difference that needs to be dealt with is the
ABI of data structures.

The intermediate structure uses __le32 to avoid
extra memory allocations to byteswap
variable-length substructures (i.e. host mem
chunks).

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

ath10k: relocate wmi attach/deatch functions

Init functions should be placed at the end of
files in most cases to avoid forward declarations
for static functions.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

ath10k: deduplicate host mem chunk code

Simplify the code by deduplicating structure
definitions and code.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

ath10k: deduplicate wmi_channel code

The structure is being set up in 2 places.
Deduplicate the code by creating a helper.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

ath10k: remove unused pdev_set_channel command

This command is not used anymore and most firmware
revisions do not seem to handle it well. Channel
switching is done via vdev restarting.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

ath10k: fix tx/rx chainmask init

Firmware reports the number of RF chains so use
that for initialization of supp_{tx,rx}_chainmask
instead of using a macro for 3x3 chips.

This should make tx/rx chainmask reports correct
for chips other than 3x3.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

ath10k: workaround fw beaconing bug

Some firmware revisions don't wait for beacon tx
completion before sending another SWBA event. This
could lead to hardware using old (freed) beacon
data in some cases, e.g. tx credit starvation
combined with missed TBTT. This is very very rare.

On non-IOMMU-enabled hosts this could be a
possible security issue because hw could beacon
some random data on the air.  On IOMMU-enabled
hosts DMAR faults would occur in most cases and
target device would crash.

Since there are no beacon tx completions (implicit
nor explicit) propagated to host the only
workaround for this is to allocate a DMA-coherent
buffer for a lifetime of a vif and use it for all
beacon tx commands. Worst case for this approach
is some beacons may become corrupted, e.g. garbled
IEs or out-of-date TIM bitmap.

Keep the original beacon-related code as-is in
case future firmware revisions solve this problem
so that the old path can be easily re-enabled with
a fw_feature flag.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

ath10k: use ether_addr_copy()

As suggeested by checkpatch:

WARNING: Prefer ether_addr_copy() over memcpy() if the Ethernet addresses are __aligned(2)

In wmi.c I had to change due to sparse warnings copying of struct wmi_mac_addr
from form &cmd->peer_macaddr.addr to cmd->peer_macaddr.addr. In
ath10k_wmi_set_ap_ps_param() I also added the missing ".addr" to the copy
command.

Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

ath10k: reformat help text in ath10k_read_simulate_fw_crash()

Makes it more readable and fixes checkpatch warnings:

drivers/net/wireless/ath/ath10k/debug.c:593: WARNING: quoted string split across lines
drivers/net/wireless/ath/ath10k/debug.c:594: WARNING: quoted string split across lines
drivers/net/wireless/ath/ath10k/debug.c:595: WARNING: quoted string split across lines
drivers/net/wireless/ath/ath10k/debug.c:596: WARNING: quoted string split across lines
drivers/net/wireless/ath/ath10k/debug.c:597: WARNING: quoted string split across lines
drivers/net/wireless/ath/ath10k/debug.c:599: WARNING: quoted string split across lines
drivers/net/wireless/ath/ath10k/debug.c:600: WARNING: quoted string split across lines

Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

ath10k: miscellaneous checkpatch fixes

Fixes checkpatch warnings:

ath10k/htc.c:49: WARNING: Possible unnecessary 'out of memory' message
ath10k/htc.c:810: WARNING: Possible unnecessary 'out of memory' message
ath10k/htt.h:1034: CHECK: Please use a blank line after function/struct/union/enum declarations
ath10k/htt_rx.c:135: CHECK: Unnecessary parentheses around htt->rx_ring.alloc_idx.vaddr
ath10k/htt_rx.c:173: CHECK: Unnecessary parentheses around htt->rx_ring.alloc_idx.vaddr
ath10k/pci.c:633: WARNING: macros should not use a trailing semicolon
ath10k/wmi.c:3594: WARNING: quoted string split across lines

Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

ath10k: else is not generally useful after a break or return

Fixes checkpatch warnings:

WARNING: else is not generally useful after a break or return

Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

ath10k: don't use return on void functions

Fixes a checkpatch warning:

WARNING: void function return statements are not generally useful

Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

ath10k: fix space after a cast style errors

Fixes checkpatch warnings:

CHECK: No space is necessary after a cast

Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

ath10k: fix missing a blank line after declarations

Fixes checkpatch warnings:

WARNING: Missing a blank line after declarations

Please note that some of the cases I fixed by moving the variable declarations
to the beginning of the function, which is the preferred style in ath10k.

Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

ath10k: fix use of multiple blank lines

Fixes checkpatch warnings:

CHECK: Please don't use multiple blank lines

Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

ath10k: fix checkpatch warnings about parenthesis alignment

CHECK: Alignment should match open parenthesis

Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

ath10k: fix parenthesis alignment warning in ath10k_htt_rx_alloc()

Fixes checkpatch warning:

ath10k/htt_rx.c:519: CHECK: Alignment should match open parenthesis

Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

ath10k: fix debugfs_create_dir() checking

The function may return an -ENODEV if debugfs is
disabled in kernel. This should originally be
guarded by ath10k's Kconfig but it still makes
sense to check for the non-NULL errno return
value.

Reported-by: Matteo Croce <matteo@openwrt.org>
Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

ath10k: support firmware crash-by-assert

10.1 firmware does not have an official way to
cause assert on purpose, but it can be done with
carefully crafted WMI command.  This is a different
kind of crash from the 'hard' crash, which is
a bad memory dereference.

Different crashes decode in different manners, so
this will help the crash-report testing as well as
offer better ways to test firmware failure and
recovery.

kvalo: move the wmi command creation to debug.c, modify
the info print

Signed-off-by: Ben Greear <greearb@candelatech.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

ath10k: add testmode

Add testmode interface for starting and using UTF firmware which is used to run
factory tests. This is implemented by adding new state ATH10K_STATE_UTF and user
space can enable this state with ATH10K_TM_CMD_UTF_START command. To go back to
normal mode user space can send ATH10K_TM_CMD_UTF_STOP.

Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

ath10k: make ath10k_wmi_cmd_send() public

We need this function to send wmi packets from testmode.c.

Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

ath10k: ATH10K_DEBUGFS depends on DEBUG_FS

ATH10K_DEBUGFS must depend on DEBUG_FS, otherwise
ath10k will generate an invalid pointer on module load.

Signed-off-by: Matteo Croce <matteo@openwrt.org>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

ath10k: use proper service bitmap size

On 32bit systems the bitmap was too small and it
was overwritten partially by the stat completion
structure. This was visible with 10.2 firmware
only due to it using a few of the last service
ids.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

ath10k: move fw_crash_dump allocation

The fw_crash_data was allocated too late. Upon
early firmware crash, before registering to
mac80211, it was possible to crash the whole
system:

 ath10k_pci 0000:00:05.0: device has crashed during init
 BUG: unable to handle kernel NULL pointer dereference at           (null)
 IP: [<ffffffffa0058005>] ath10k_debug_get_new_fw_crash_data+0x15/0x30 [ath10k_core]
 PGD 0
 Oops: 0002 [#1] SMP
 Modules linked in: ath10k_pci(O) ath10k_core(O) ath [last unloaded: ath]
 CPU: 3 PID: 29 Comm: kworker/u8:1 Tainted: G           O   3.17.0-rc2-wl-ath+ #447
 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011
 Workqueue: ath10k_wq ath10k_core_register_work [ath10k_core]
 task: ffff88001eb01ad0 ti: ffff88001eb60000 task.ti: ffff88001eb60000
 RIP: 0010:[<ffffffffa0058005>]  [<ffffffffa0058005>] ath10k_debug_get_new_fw_crash_data+0x15/0x30 [ath10k_core]
 RSP: 0018:ffff88001eb63ce8  EFLAGS: 00010246
 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
 RDX: 0000000000000000 RSI: ffffc90001a09030 RDI: 0000000000000001
 RBP: ffff88001eb63cf0 R08: 0000000000000000 R09: ffff8800000bb200
 R10: 00000000000001e2 R11: ffff88001eb638de R12: ffff88001d7459a0
 R13: ffff88001d746ab0 R14: 00000000fffe14d4 R15: ffff88001d747c60
 FS:  0000000000000000(0000) GS:ffff88001fd80000(0000) knlGS:0000000000000000
 CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
 CR2: 0000000000000000 CR3: 000000001df34000 CR4: 00000000000006e0
 Stack:
  ffff88001d7459a0 ffff88001eb63d58 ffffffffa0083bbe ffff880000000010
  ffff88001eb63d68 ffff88001eb63d18 0000000000000002 0000000000059010
  ffffffffa0086fef 00000000deadbeef ffff88001d747a28 ffff88001d7459a0
 Call Trace:
  [<ffffffffa0083bbe>] ath10k_pci_fw_crashed_dump+0x2e/0xd0 [ath10k_pci]
  [<ffffffffa0085410>] __ath10k_pci_hif_power_up+0x5f0/0x700 [ath10k_pci]
  [<ffffffffa0085550>] ath10k_pci_hif_power_up+0x30/0xe0 [ath10k_pci]
  [<ffffffffa005bc7b>] ath10k_core_register_work+0x2b/0x520 [ath10k_core]
  [<ffffffff810689cc>] process_one_work+0x18c/0x3f0
  [<ffffffff81069011>] worker_thread+0x121/0x4a0
  [<ffffffff81068ef0>] ? rescuer_thread+0x2c0/0x2c0
  [<ffffffff8106daf2>] kthread+0xd2/0xf0
  [<ffffffff8106da20>] ? kthread_create_on_node+0x170/0x170
  [<ffffffff81857cfc>] ret_from_fork+0x7c/0xb0
  [<ffffffff8106da20>] ? kthread_create_on_node+0x170/0x170
 Code: 8b 40 38 48 c7 80 00 01 00 00 00 00 00 00 5b 5d c3 0f 1f 44 00 00 0f 1f 44 00 00 55 48 89 e5 53 48 8b 9f 90 1d 00 00 48 8d 7b 01 <c6> 03 01 e8 e3 ec 2b e1 48 8d 7b 18 e8 6a 4f 05 e1 48 89 d8 5b
 RIP  [<ffffffffa0058005>] ath10k_debug_get_new_fw_crash_data+0x15/0x30 [ath10k_core]
  RSP <ffff88001eb63ce8>
 CR2: 0000000000000000
 ---[ end trace 5d0ed15b050bcc1f ]---
 Kernel panic - not syncing: Fatal exception in interrupt
 Kernel Offset: 0x0 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffff9fffffff)
 ---[ end Kernel panic - not syncing: Fatal exception in interrupt

To prevent that split debug functions and allocate
fw_crash_data earlier.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

ath10k: don't access tx_info while overwriting it

Nothing important was being overwritten so it
didn't yield any bugs yet.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

ath10k: add device/driver strings to tracepoints

This makes it easier to log and debug via tracing
with more than 1 ath10k device on a system.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

ath10k: remove diag_*_access functions

Remove the ugly _access functions. Being explicit
is a good thing.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

ath10k: stop monitor vdev for sta assoc

This prevents some fw revisions from crashing in
many cases when user is trying to run a
promiscuous station interface (e.g. sniffing,
4addr bridge).

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

ath10k: fix monitor start/stop sequences

Fix some cases where monitor start failure left
the driver in a confused state.

This also makes the monitor code simpler.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

ath10k: kill tasklets after free_irq

Commit 5c771e7454d148af35e8b4297d00f880de79ea49
introduced a regression. On some systems spurious
interrupts could schedule a tasklet while tearing
down leading to, e.g.:

 BUG: unable to handle kernel paging request at fe589030
 IP: [<c1316fb0>] ioread32+0x30/0x40
 ...
 Call Trace:
  [<fe576c1b>] ath10k_pci_tasklet+0x1b/0x60 [ath10k_pci]
  [<c1053fbe>] tasklet_action+0x9e/0xb0
  [<c10534f1>] __do_softirq+0xf1/0x3f0
  [<c1053400>] ? ftrace_raw_event_irq_handler_entry+0xa0/0xa0
  [<c1004999>] do_softirq_own_stack+0x29/0x40
  <IRQ>
  [<c1053a76>] irq_exit+0x86/0xb0
 ...
  [<c132d522>] do_pci_disable_device+0x52/0x60
  [<c132d57f>] pci_disable_device+0x4f/0xb0
  [<c132a961>] ? __pci_set_master+0x51/0x80
  [<fe5740b3>] ath10k_pci_release+0x33/0x40 [ath10k_pci]
  [<fe575d4b>] ath10k_pci_remove+0x7b/0x90 [ath10k_pci]

Reported-by: Kalle Valo <kvalo@qca.qualcomm.com>
Tested-by: Kalle Valo <kvalo@qca.qualcomm.com>
Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

ath10k: fix num_legacy_stations tracking

If a station was reassociated, i.e. due to change
of supported rates update via sta_rc_update() the
num_legacy_stations would be (incorrectly) bumped
up leading to unbalanced usage of the var. This in
turn could lock rtscts protection up as enabled.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

ath10k: re-enable interrupts properly in hw recovery

Recent changes done to start/restart sequences
broke hw recovery in some hw configurations. The
pci transport was stopped twice however due to a
workaround in the pci disabling code the
disable/enable for first msi interrupt was not
balanced. This ended up with irqs not being
properly re-enabled and the following print out
during recovery:

 ath10k: failed to receive control response completion, polling..
 ath10k: Service connect timeout: -110
 ath10k: Could not init core: -110

Legacy interrupt mode was unaffected while msi
ranged mode would be partially crippled (it would
miss fw indication interrupts but otherwise it
worked fine).

This fixes completely broken fw recovery for a
single msi interrupt mode and fixes subsequent fw
crash reports for msi range interrupt mode.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

carl9170: tx: Replace rcu_assign_pointer() with RCU_INIT_POINTER()

According to RCU_INIT_POINTER()'s block comment 3.a, it can be used if
"3.   The referenced data structure has already been exposed to readers either
at compile time or via rcu_assign_pointer() -and-
 a.   You have not made -any- reader-visible changes to this structure since
then".

This case fulfills the conditions above because between the rcu_dereference()
call (cvif = rcu_dereference(ar->beacon_iter);) and the rcu_assign_pointer()
call there is no update of the "cvif" variable.
Therefore, this patch makes the replacement.

The following Coccinelle semantic patch was used:
@@
identifier v;
@@

v = rcu_dereference(...);
... when != rcu_dereference(...);
    when != v = ...;
    when != (<+...v...+>)++;
    when != \(memcpy\|memset\)(...);
(
- rcu_assign_pointer
+ RCU_INIT_POINTER
  (..., v);
|
 if(...) {
... when != v = ...;
- rcu_assign_pointer
+ RCU_INIT_POINTER
  (..., v);
... when any
 }
)

Because there are cases where between a “rcu_dereference()” call and a
“rcu_assign_pointer()” call might be updates of the value that interests us,
the Coccinelle semantic patch ignores them and replaces with
"RCU_INIT_POINTER()" only when the update is not happening.

Signed-off-by: Andreea-Cristina Bernat <bernat.ada@gmail.com>
Acked-by: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: Fix channel context timer

Setup the channel context correctly. Not doing this was
causing beacon loss in a P2P-GO/STA concurrent setup.

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: Add more debug statements for channel context

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: Disable fastcc for channel context mode

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

rt2x00: support Ralink 5362.

Signed-off-by: Canek Peláez Valdés <canek@ciencias.unam.mx>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: Fix channel context creation

If a new context is being added in addition to the current one,
then send the ASSIGN event to abort a running scan since
the addition of a context is usually followed by VIF
assignment and further operations.

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: Fix interface limits

There is no reason why managed/p2p interfaces have to
be limited to one. IBSS is the only type that needs
a restriction.

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: Print the event/state in ath_chanctx_event

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: Add new chanctx events

This will be useful in handling addition/change of new
channel contexts.

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: Fix ath_chanctx_get()

Move it inside a CONFIG_ATH9K_CHANNEL_CONTEXT ifdef
since it is not needed otherwise.

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: Move ath9k_beacon_add_noa to channel.c

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: Remove redundant ifdef

This was introduced in an earlier patch to handle
a compilation warning, but since the channel context
code has been mostly isolated, this is not required now.

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: Fix channel context variables in ath_softc

chanctx_work and next_chan are required only when
CONFIG_ATH9K_CHANNEL_CONTEXT is enabled.

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: Fix 'offchannel' in ath_softc

Finally move the 'offchannel' instance in ath_softc
inside a CONFIG_ATH9K_CHANNEL_CONTEXT cage. The offchannel
usage in ath9k_calculate_iter_data() is closed off with
an ifdef for now, since the state/opmode calculation is
common for both the channel context mode and the normal mode.

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: Fix function argument type

ath9k_vif_iter() was earlier used as an iterator
routine when calling a mac80211 utility. This is no
longer the case and hence we can mention the argument
type explicitly.

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: Use ath_chanctx_check_active properly

ath_chanctx_check_active() is required only when channel contexts
are used. Make sure that it is not called in normal usage.

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: Add ath9k_offchannel_init

This patch adds a routine to setup the offchannel
instance in ath_softc.

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: Add ath9k_chanctx_wake_queues

Introduce a function that handles queues in channel
context mode.

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: Add wrappers for beacon events

Using these wrappers allows us to move the 'sched'
variable in ath_softc inside CONFIG_ATH9K_CHANNEL_CONTEXT.

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: Fix function declarations

These routines are required only when
CONFIG_ATH9K_CHANNEL_CONTEXT is enabled.

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: Fix channel context events

Check if channel context usage is enabled before
calling ath_chanctx_event() from various parts of the
driver. Also, make sure that ath_chanctx_event() is
compiled only when CONFIG_ATH9K_CHANNEL_CONTEXT is
enabled.

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: Make ath_chanctx_switch static

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: Make ath_chanctx_get_oper_chan static

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: Make ath_chanctx_offchan_switch static

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: Conditionally compile more functions

Use CONFIG_ATH9K_CHANNEL_CONTEXT to exclude:

ath_scan_complete()
ath_roc_complete()
ath_offchannel_next()
ath_scan_next_channel()
ath_scan_channel_duration()

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: Exclude more functions

Use CONFIG_ATH9K_CHANNEL_CONTEXT to exclude more functions:

ath_offchannel_channel_change()
ath_scan_channel_start()
ath_scan_send_probe()

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: Conditionally compile a few functions

Exclude these functions when CONFIG_ATH9K_CHANNEL_CONTEXT is not
enabled:

ath_chanctx_send_vif_ps_frame()
ath_chanctx_send_ps_frame()
ath_chanctx_defer_switch()
ath_chanctx_set_next()

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: Cleanup mgd_prepare_tx callback

Rename the callback from ath9k_chanctx_force_active()
to ath9k_mgd_prepare_tx(). Also, move it to main.c and
group it with the other callbacks.

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: Make ath_chanctx_work static

Also compile it conditionally based on
CONFIG_ATH9K_CHANNEL_CONTEXT.

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: Add a routine to tear down channel contexts

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: Add a routine for initializing channel contexts

Setup the offchannel/sched timers and the chanctx work
inside the new function.

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

carl9170: Remove redundant protection check

The carl9170_op_ampdu_action() function is used only by the mac80211
framework.
Since the mac80211 already takes care of checks and properly serializing
calls to the driver's function there is no need for the driver to do the same
thing.

Signed-off-by: Andreea-Cristina Bernat <bernat.ada@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: Isolate ath9k_use_chanctx module parameter

This patch ensures that the module parameter "use_chanctx" is
visible only when CONFIG_ATH9K_CHANNEL_CONTEXT is selected.
Also register the channel context callbacks with mac80211 only
when it is explicitly enabled and compile them out of the driver
when CONFIG_ATH9K_CHANNEL_CONTEXT is not selected.

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: Isolate P2P powersave routines

Use CONFIG_ATH9K_CHANNEL_CONTEXT to conditionally
compile P2P-PS code.

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: Move P2P functions to channel.c

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: Add a config option for channel context

Channel contexts are supported only for P2P right now,
so make sure that the 'normal' path remains unaffected
by using a config option. This will also reduce the size
of the driver.

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: Add debug information

Add a few statements to debug channel context operation.

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: Move channel operations to channel.c

This reduces clutter in main.c

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: Handle failure to allocate HW timer

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: Add a debug level for channel context

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath5k: remove redundant null check before kfree()

kfree() null-checks its argument.
Found by smatch.

Signed-off-by: Bob Copeland <me@bobcopeland.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath5k: ensure led name is null terminated

Add the missing null termination after strncpy().

This isn't actually a buffer overflow in this case since we use
snprintf() appropriately to fill the buffer passed by the caller,
but in the interest of not turning this into a bug down the road,
go ahead and force termination here.

Found by Coverity.

Signed-off-by: Bob Copeland <me@bobcopeland.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath5k: drop useless comparison

rxs->rate_idx is unsigned, so it will always be >= 0.
Found by Coverity.

Signed-off-by: Bob Copeland <me@bobcopeland.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ray_cs: Add include guards

The files ray_cs.h and rayctl.h both contain two thirds of what
appears to be an include guard using the macro name RAYLINK_H (both
lack the #define). Since RAYLINK_H is not defined anywhere, the
#ifndefs are confusing no-ops. Add proper include guards using
different macro names.

Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

bcma: only map wrapper if its address is available

The Chipcommon B core does not have a wrap address and it would fail here.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

mwifiex: use firmware API revision from GET_HW_SPEC response

Newer firmware returns API revision in GET_HW_SPEC command
response. We will make use of it instead of parsing this
information from FW release number.

Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Avinash Patil <patila@marvell.com>
Signed-off-by: Cathy Luo <cluo@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

mwifiex: rename macro and variables related to API revision

We will remove 'fw' prefix from these variable and macro
names and make them generic.

Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Avinash Patil <patila@marvell.com>
Signed-off-by: Cathy Luo <cluo@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

mwifiex: fix left_len calculation issue

While updating 'left_len' in each iteration, we should subtract
last TLV length not the accumulated length of TLVs parsed till
now.
This bug in parsing logic is exposed by newer firmware which adds
two TLVs in GET_HW_SPEC command response. Earlier firmwares used to
add only one TLV.

Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Avinash Patil <patila@marvell.com>
Signed-off-by: Cathy Luo <cluo@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k_htc: advertise support for TDLS

Based on a quick test with AR9271, TDLS seems to be working fine.

Tests were done with 2 Atheros AR9271 based devices with firmware
1.3 (sha1 8d49f928aa40ac53c729189bff1333cd373a7fb5), associated
with a WAP54G access point. TDLS worked fine both in WPA2 mode and
without encryption. Stations maintained ping flood traffic between
each other and towards the AP without significant losses.

Not tested with AR7010.

TDLS was enabled in earlier patches the same way for other
Atheros drivers:
ath9k (fd6562344dea2b8b2a5d644cf971f4e56004500a),
and carl9170 (d1f3de71a584a82ee4e84505fce9acccf40215ff).

Signed-off-by: Csaba Kiraly <csaba.kiraly@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

MAINTAINTERS: The NFC list is subscribers-only

It's not moderated, it's subscribers-only.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

Merge branch 'for-linville' of git://github.com/kvalo/ath

ath10k: make target endianess more explicit

Some copy engine structures are target specific
and are uploaded to the device during
init/configuration.

This also cleans up a bit diag_mem_read/write
implicit byteswap mess leaving only
diag_access_read/write with an implicit endianess
byteswap.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

ath10k: dont duplicate service-pipe mapping

The mapping is already defined in a structure. It
makes little sense to duplicate information stored
in it within a function.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

ath10k: move pci init structures

It doesn't make much sense to have copy engine
configuration structures spread across the whole
source file.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

ath10k: fix fw crash dumping

Recent crash dump patches introduced a regression.
If debugfs was disabled upon crash user could only
see the following:

 [  793.880000] ath10k: firmware crashed! (uuid n/a)
 [  793.890000] ath10k: qca988x hw2.0 (0x4100016c, 0x043202ff) fw 10.1.467.2-1 api 2 htt 2.1
 [  793.890000] ath10k: debug 0 debugfs 0 tracing 0 dfs 1

The report was missing register dump. Fix it by
printing registers regardless if crash_data is
present or not.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

ath10k: improve logging to include dev id

This makes it a lot easier to log and debug
messages if there's more than 1 ath10k device on a
system.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

orinoco_usb: use USB API functions rather than constants

This patch introduces the use of the functions
usb_endpoint_is_bulk_in(epd) and usb_endpoint_is_bulk_out(epd).

The semantic patch that makes these changes is as follows:

@@ struct usb_endpoint_descriptor *epd; @@

- ((epd->bmAttributes & \(USB_ENDPOINT_XFERTYPE_MASK\|3\)) ==
- \(USB_ENDPOINT_XFER_BULK\|2\))
+ usb_endpoint_xfer_bulk(epd)

@@ struct usb_endpoint_descriptor *epd; @@

- ((epd->bEndpointAddress & \(USB_ENDPOINT_DIR_MASK\|0x80\)) ==
-  \(USB_DIR_IN\|0x80\))
+ usb_endpoint_dir_in(epd)

@@ struct usb_endpoint_descriptor *epd; @@

- ((epd->bEndpointAddress & \(USB_ENDPOINT_DIR_MASK\|0x80\)) ==
-  \(USB_DIR_OUT\|0\))
+ usb_endpoint_dir_out(epd)

@@ struct usb_endpoint_descriptor *epd; @@

- (usb_endpoint_xfer_bulk(epd) && usb_endpoint_dir_in(epd))
+ usb_endpoint_is_bulk_in(epd)

@@ struct usb_endpoint_descriptor *epd; @@

- (usb_endpoint_xfer_bulk(epd) && usb_endpoint_dir_out(epd))
+ usb_endpoint_is_bulk_out(epd)

Signed-off-by: Himangi Saraogi <himangi774@gmail.com>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

atmel_cs: Remove typedef local_info_t

The Linux kernel coding style guidelines suggest not using typedefs
for structure types. This patch gets rid of the typedef for
local_info_t. Also, the name of the struct is changed to drop the _t,
to make the name look less typedef-like.

The following Coccinelle semantic patch detects the case:

@tn@
identifier i;
type td;
@@

-typedef
 struct i { ... }
-td
 ;

@@
type tn.td;
identifier tn.i;
@@

-td
+ struct i

Signed-off-by: Himangi Saraogi <himangi774@gmail.com>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

wireless: core: Reorder wiphy_register() notifications relevantly

Currently it can send regulatory domain change notification before any
NEW_WIPHY notification. Moreover, if rfill_register() fails, calling
wiphy_unregister() will send a DEL_WIPHY though no NEW_WIPHY had been
sent previously.

Thus reordering so it properly notifies NEW_WIPHY before any other.

Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

net: wireless: ipw2x00: ipw2200.c: Cleaning up missing null-terminate in conjunction with strncpy

Replacing strncpy with strlcpy to avoid strings that lacks null terminate.

Signed-off-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

wireless: wlcore: Use devm_kzalloc

This patch introduces the use of devm_kzalloc and does away with the
kfrees in the probe and remove functions. Also, a couple of labels and
the initial assignment of the ret variable in the probe function are
removed.

Signed-off-by: Himangi Saraogi <himangi774@gmail.com>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

wil6210: fix access after free in wil_pcie_remove()

'wil'  released in wil_if_free(); save iomapped address aside to
properly unmap it.

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

wil6210: cfg80211_rx_mgmt to use GFP_ATOMIC

Internally, cfg80211_rx_mgmt() takes lock:
spin_lock_bh(&wdev->mgmt_registrations_lock);

and therefore one can't use it with GFP_KERNEL allocation flags.
When called with GFP_KERNEL, "sleep while atomic" warning triggered:

<3>[242645.446224] BUG: sleeping function called from invalid context at kernel/mm/slub.c:926
<3>[242645.455516] in_atomic(): 1, irqs_disabled(): 0, pid: 18881, name: kworker/u16:0
<6>[242645.462868] CPU: 0 PID: 18881 Comm: kworker/u16:0 Tainted: G           O 3.10.40-g619a884-00001-g357fa9c #2
<6>[242645.463044] Workqueue: wil6210_wmi wmi_event_worker [wil6210]
<6>[242645.463087] Call trace:
<6>[242645.463157] [<ffffffc000087390>] dump_backtrace+0x0/0x144
<6>[242645.463205] [<ffffffc0000874e4>] show_stack+0x10/0x1c
<6>[242645.463259] [<ffffffc0009abc04>] dump_stack+0x1c/0x28
<6>[242645.463313] [<ffffffc0000c10c0>] __might_sleep+0xe0/0xf0
<6>[242645.463365] [<ffffffc00015a514>] kmem_cache_alloc+0x48/0x1e4
<6>[242645.463414] [<ffffffc00080d468>] __alloc_skb+0x48/0x164
<6>[242645.463466] [<ffffffc00097f2c4>] nl80211_send_mgmt+0x4c/0x1dc
<6>[242645.463511] [<ffffffc000980268>] cfg80211_rx_mgmt+0x1bc/0x25c
<6>[242645.463647] [<ffffffbffc005d64>] wmi_evt_rx_mgmt+0x21c/0x23c [wil6210]
<6>[242645.463783] [<ffffffbffc0073b8>] wmi_event_worker+0x230/0x2f8 [wil6210]
<6>[242645.463838] [<ffffffc0000afffc>] process_one_work+0x258/0x3d0
<6>[242645.463887] [<ffffffc0000b0fe0>] worker_thread+0x1f0/0x310
<6>[242645.463946] [<ffffffc0000b642c>] kthread+0xac/0xb8

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

wil6210: fix free'd memory access in wil_if_free()

In the wil_priv_deinit(), wdev->netdev is accessed, so free_netdev()
should not be called before mentioned call.

Set wdev->netdev to NULL Make sure no more attempts to use it.
It is used for debug printk if not NULL.

This fix kernel panic on module unload and in case error on probe;
if memory allocation debugging enabled.

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

wil6210: Limit max number of associated stations

Add a module parameter to support setting the maximum
number of stations that can be associated to an AP.

Signed-off-by: Dedy Lansky <qca_dlansky@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

wil6210: fix false "scan timeout"

When sending scan request, if hardware is not ready, scan timer was started
and scan timeout mis-reported.

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

wil6210: fix beamforming data reporting

When reading 'bf' file on debugfs, query beam forming status from firmware.
Ignore CID's that return error or return all zeros.

Remove obsolete code that used to maintain statistics on per-device basis,
as now it is reported be per-CID and current.

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>