The maximum number of clients which ath6kl can support in AP mode
is 10. The limitation of 8 connections is only for older chipsets
which ath6kl does not support.
Signed-off-by: NVasanthakumar Thiagarajan <vthiagar@qca.qualcomm.com>
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>

It was only initialised but not used anywhere. Also remove two defines
which ended up unused after this change.
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>

ath6kl assumed cfg80211 passed to us power in dBm but it is in mBm.

Cc: Kalle Valo <kvalo@qca.qualcomm.com>
Signed-off-by: NLuis R. Rodriguez <mcgrof@qca.qualcomm.com>
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>

The return value of snprintf() is the number of bytes which would
have been copied if there was enough space, but we want the number of
bytes actually copied.  The scnprintf() function does this.

Also in theory, a %u can take take 10 digits so we may as well make
the buffer larger as well.
Signed-off-by: NDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>

Firmware crashes while starting Soft AP in 32 bit x86 platform.
The reason is that the single dma buffer (ar_sdio->dma_buffer)
is used in ath6kl_sdio_read_write_sync() for unaligned buffer
handling and this function is called in the multiple context
at the same time. So, finally hits dma buffer corruption and
firmware crash.

Mutex is used to protect dma buffer to avoid data corruption.
Spin lock can not used to fix this issue since mmc stack
read/write calls may for sleep.

Observed this issue with recently commited patch
"ath6kl: Claim sdio function only at appropriate places"
861dd058

kvalo: change name of mutex to more descriptive and add a comment
about what it protects
Signed-off-by: NRaja Mani <rmani@qca.qualcomm.com>
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>

There is an unlock missing on this error path.
Signed-off-by: NDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>

The maximum number of supported virtual interfaces are 3.
Signed-off-by: NVasanthakumar Thiagarajan <vthiagar@qca.qualcomm.com>
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>

Currently the max number of vifs which can be used for non-p2p
mode is determined in ath6kl_core_alloc(). But the maximum
supported vifs are parsed from firmware IE in ath6kl_fetch_fw_api2()
which would happen after ath6kl_core_alloc().
Signed-off-by: NVasanthakumar Thiagarajan <vthiagar@qca.qualcomm.com>
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>

This modparam was introduced to enable non-p2p mode operation
on two virtual interfaces. It does not seem to be necessary to
have a separate module parameter to do that. Instead, this option
can be enabled when any one of the interfaces is not going to be
used for p2p (ath6kl_p2p).
Signed-off-by: NVasanthakumar Thiagarajan <vthiagar@qca.qualcomm.com>
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>

The ath6kl responds to probe-requests in HW while operating as an AP. It
supports offloading exclusions to support the WPS, WPS2, P2P and
802.11u protocols.
Signed-off-by: NArik Nemtsov <arik@wizery.com>
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>

When operating AP interface is brough down the mode is reset to
STA. This STA will be reconfigured into AP mode when the interface
is brought up again. This sequence will be successful only when
change_virtual_intf() returns with no error, but there is a
check in this callback which does the type change only when
that interface is active. This callback does nothing more
than saving the new interface type to vif and wdev, so the
sanity check for interface state and wmi state is not necessary.
This makes the AP interface functional again after interface down/up.
Signed-off-by: NVasanthakumar Thiagarajan <vthiagar@qca.qualcomm.com>
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>

Connect control flag CONNECT_WPS_FLAG has to be cleared
by default even if the driver receives zero length IE
from cfg80211.

Otherwise this flag would be always set after WPS exchange
which would lead wpa_supplicant to fail to connect with
the received WPS credentials. This issue is observed only
in OPEN security.

kvalo: use cfg80211 instead of CFG in the commit log
Signed-off-by: NRaja Mani <rmani@qca.qualcomm.com>
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>

Not all firmwares support multiple vifs and we need to read the limit from
the firmware image.
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>

Needed when detecting how many vifs firmware supports.
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>

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

When adding ar6004 SDIO support I forgot to add corresponding
MODULE_FIRMWARE() definitions to sdio.c.
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>

Part of ath6kl uses "REV3" style of naming hardware versions and elsewhere
"hw 2.1.1" is used instead for the same version. This is confusing, use
the latter term everywhere.
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>

To make it easier to print name for each hardware type. Also move the hw
info print to ath6kl_init_hw_start() which is more logical place for it.
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>

Board data address can change between firmwares so we need to read that
from the firmware image.

Also fix debug log for the patch address to print the address in hex.
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>

This is to make it configurable by firmware IEs. Also determine if we need
to write or read the board address to the chip by checking if board address
is set or not.
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>

It's easier to handle the values when they are defined in a struct.
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>

Having separate defines, in a different file, makes it difficult to read
the actual values. As we are just setting named fields in a struct
the defines don't make any sense anymore.

There are no functional changes, only moving of constants.
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>

OPEN_AUTH is passed as dot11_auth_mode by default, this would
affect the AP mode when configured with shared authentication
type. Assign appropriate auth type to fix this from driver.
A patch in wpa_supplicant (wpa_supplicant: Set configured auth_algs)
is also needed to fix this.
Signed-off-by: NVasanthakumar Thiagarajan <vthiagar@qca.qualcomm.com>
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>

vif->def_txkey_index is set to key_index in ath6kl_cfg80211_add_key().
If the interface is configured with multiple static wep keys,
vif->def_txkey_index would be holding the index of the last key configured,
not the default tx key index. Remove this unnecessary default key index setting
in ath6kl_cfg80211_add_key() to configure the right key index in WEP thereby
make it work when multiple wep keys are configured.
Signed-off-by: NVasanthakumar Thiagarajan <vthiagar@qca.qualcomm.com>
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>

Now two modules are built, ath6kl_sdio.ko and ath6kl_usb.ko. But the USB
module isn't fully functional yet as HTC layer is missing support and
that's why it's marked as experimental for now.
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>

As HTC layer doesn't support USB devices return an error if that happens.
USB support will be added to HTC in the future, this is just a temporary
solution.
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>

Add USB support for ar6004. Currently only firmware can be booted,
no commands can be sent to firmware yet as HTC layer doesn't work
with USB yet.

Based on patches by Kevin Fang.
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>

In some rare cases core code needs to know what hif type is used. Add
a field to struct ath6kl to denote that. Hopefully this is just a
temporary solution.
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>

Add support for AR6004 SDIO. Tested scan, association (open mode) and
ping.

kvalo: change commit log a bit, drop board address changes
Signed-off-by: NNaveen Gangadharan <ngangadh@qca.qualcomm.com>
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>

These have changed a bit since last time ar6004 code was commited.
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>

Add also hw 1.1.
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>

This is preparation for USB support which will have different diag
commands.

Based on code by Kevin Fang.
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>

SDIO and USB have different maximum sizes for BMI commands so make that
configurable.
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>

In preparation for USB support which has it's own method for bmi.

Based on code by Kevin Fang.
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>

The firmware expects the minimum length of
WMI_SEND_PROBE_RESPONSE_CMDID to be 13. However, when the device is a
P2P GO and it needs to send a probe response to a non-P2P client,
there are no P2P IEs to be added, and therefore the length of the WMI
command is 12. This command gets rejected by the firmware. To fix
this, add an extra byte to satisfy the minimum length requirement.
Signed-off-by: NAarthi Thiruvengadam <athiruve@qca.qualcomm.com>
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>

When the connect event is received from the target in IBSS mode,
cfg80211_ibss_joined() is called without informing BSS info to
cfg80211 layer which internally hits the below WARN_ON message.

WARNING: at net/wireless/ibss.c:33 __cfg80211_ibss_joined+0x153/0x180 [cfg80211]()
[..]
[ 4916.845878] Call Trace:
[ 4916.845889]  [<c10427d2>] warn_slowpath_common+0x72/0xa0
[ 4916.845905]  [<f8bccc63>] ? __cfg80211_ibss_joined+0x153/0x180 [cfg80211]
[ 4916.845918]  [<f8bccc63>] ? __cfg80211_ibss_joined+0x153/0x180 [cfg80211]
[ 4916.845923]  [<c1042822>] warn_slowpath_null+0x22/0x30
[ 4916.845934]  [<f8bccc63>] __cfg80211_ibss_joined+0x153/0x180 [cfg80211]
[ 4916.845941]  [<c1025108>] ? default_spin_lock_flags+0x8/0x10
[ 4916.845952]  [<f8bb7fcd>] cfg80211_process_rdev_events+0x19d/0x220 [cfg80211]
[ 4916.845962]  [<f8bb669b>] cfg80211_event_work+0x2b/0x50 [cfg80211]
[ 4916.845968]  [<c105aae6>] process_one_work+0x116/0x3c0
[ 4916.845977]  [<f8bb6670>] ? cfg80211_get_dev_from_info+0x40/0x40 [cfg80211]
[ 4916.845982]  [<c105cdf0>] worker_thread+0x140/0x3b0
[ 4916.845986]  [<c105ccb0>] ? manage_workers+0x1f0/0x1f0
[ 4916.845991]  [<c1060c64>] kthread+0x74/0x80
[ 4916.845995]  [<c1060bf0>] ? kthread_worker_fn+0x160/0x160
[ 4916.846001]  [<c14e7bbe>] kernel_thread_helper+0x6/0x10
[ 4916.846005] ---[ end trace 769254924e409367 ]---

This patch make sures that BSS info is delivered via cfg80211_inform_bss()
to cfg80211 in advance before intimating IBSS status to cfg80211.

In addition to this, one debug message is also added to know
ad-hoc mode status (creator/joiner).

kvalo: change subject
Signed-off-by: NRaja Mani <rmani@qca.qualcomm.com>
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>

"ath6kl: Maintain virtual interface in a list" mistakenly stops the
netq only when the mode is ibss. This causes packet drops in sta mode
when the available cookies (buffer abstraction in ath6kl and also used
for tx throttling) runs out for the highest priority traffic. This patch
just fixes this regression though the original code may still need fixes
which can be addressed in separate patches.
Reported-by: NKalle Valo <kvalo@qca.qualcomm.com>
Signed-off-by: NVasanthakumar Thiagarajan <vthiagar@qca.qualcomm.com>
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>

When buffer alignmnet is applied, the data pointer of skb taken from
cookie will no longer point to the first byte of the actual data.
But the skb->data pointer is used in ath6kl_tx_complete() to get
the index of the virtual interface which will not give the correct
interface index and sometimes may give the following WARN_ON() message.
Use packet->buf instead of skb->data to fix this.

WARNING: at drivers/net/wireless/ath/ath6kl/wmi.c:88 ath6kl_get_vif_by_index+0x5b/0x60 [ath6kl]()
Hardware name: 2842K3U
Modules linked in: ath6kl mmc_block cfg80211 binfmt_misc ppdev nfs nfsd lockd nfs_acl auth_rpcgss sunrpc exportfs snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_intel
+snd_hda_codec snd_hwdep snd_pcm_oss snd_mixer_oss snd_pcm snd_seq_dummy thinkpad_acpi snd_seq_oss snd_seq_midi snd_rawmidi joydev fbcon tileblit font bitblit softcursor
+snd_seq_midi_event snd_seq snd_timer snd_seq_device i915 uvcvideo drm_kms_helper drm psmouse serio_raw snd i2c_algo_bit sdhci_pci videodev intel_agp soundcore intel_gtt jmb38x_ms
+memstick sdhci snd_page_alloc nvram lp parport agpgart video ahci r8169 mii libahci [last unloaded: ath6kl]
Pid: 15482, comm: kworker/u:1 Tainted: G        W   3.1.0-rc10-wl+ #2
Call Trace:
 [<c0144d72>] warn_slowpath_common+0x72/0xa0
 [<fb7c94fb>] ? ath6kl_get_vif_by_index+0x5b/0x60 [ath6kl]
 [<fb7c94fb>] ? ath6kl_get_vif_by_index+0x5b/0x60 [ath6kl]
 [<c0144dc2>] warn_slowpath_null+0x22/0x30
 [<fb7c94fb>] ath6kl_get_vif_by_index+0x5b/0x60 [ath6kl]
 [<fb7c7028>] ath6kl_tx_complete+0x128/0x4d0 [ath6kl]
 [<c04df920>] ? mmc_request_done+0x80/0x80
 [<fb7b9e2e>] htc_tx_complete+0x5e/0x70 [ath6kl]
 [<c05e4cf6>] ? _raw_spin_unlock_bh+0x16/0x20
 [<fb7ce588>] ? ath6kl_sdio_scatter_req_add+0x48/0x60 [ath6kl]
 [<fb7b9f42>] htc_async_tx_scat_complete+0xb2/0x120 [ath6kl]
 [<fb7ce9e7>] ath6kl_sdio_scat_rw+0x87/0x370 [ath6kl]
 [<c0101e12>] ? __switch_to+0xd2/0x190
 [<c01397b5>] ? finish_task_switch+0x45/0xd0
 [<c05e272e>] ? __schedule+0x3ae/0x8b0
 [<fb7cf00a>] ath6kl_sdio_write_async_work+0x4a/0xf0 [ath6kl]
 [<c015d266>] process_one_work+0x116/0x3c0
 [<fb7cefc0>] ? ath6kl_sdio_read_write_sync+0xb0/0xb0 [ath6kl]
 [<c015f5b0>] worker_thread+0x140/0x3b0
 [<c015f470>] ? manage_workers+0x1f0/0x1f0
 [<c0163424>] kthread+0x74/0x80
 [<c01633b0>] ? kthread_worker_fn+0x160/0x160
 [<c05ebdc6>] kernel_thread_helper+0x6/0x10
Reported-by: NAarthi Thiruvengadam <athiruve@qca.qualcomm.com>
Signed-off-by: NVasanthakumar Thiagarajan <vthiagar@qca.qualcomm.com>
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>

This is needed to know whether the STA requests WAPI to be used and if
so, with what AKM and cipher.
Signed-off-by: NDai Shuibing <shuibing@qca.qualcomm.com>
Signed-off-by: NJouni Malinen <jouni@qca.qualcomm.com>
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>

Signed-off-by: NDai Shuibing <shuibing@qca.qualcomm.com>
Signed-off-by: NJouni Malinen <jouni@qca.qualcomm.com>
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>