If we want to shrink skb->cb then we'd have to see about
reducing struct ieee80211_tx_info, which gets embedded inside
skb->cb[].
It provides a scratch space to be used by wireless drivers.
ar5523 uses the maximum space available today (40 bytes), but it seems
we don't need this -- data->skb pointer seems to always point back to the
skb whose cb buffer the data structure resides, iow, given a pointer to the
embedded control buffer we can infer the skb address.
Tested-by: Pontus Fuchs <pontus.fuchs@gmail.com>
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Since the RTT registers need to be configured for all
valid chains irrespective of the runtime chainmask,
use the actual chainmask of the chip.
Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
When assigning the initvals for PCIE sleep/awake
registers, check the configuration that has been
assigned to pll_pwrsave during initialization. Also,
display a warning if we don't have valid arrays.
Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Cards based on AR9462/AR9565 support more PCIE
power save mechanisms, so register them correctly.
Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Use the value in ah->config.pll_pwrsave to determine
which array needs to be loaded. Also, initialize
pll_pwrsave to 1 by default.
Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
These will be used to handle chip-specific
power save configuration.
Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
For the AP, configuration may say not to bridge traffic between
wireless clients. This is conveyed from user space (ex: hostapd has
ap_isolate parameter) with NL80211_CMD_SET_BSS, to the driver's
cfg80211 ops method change_bss
Add support for this setting.
Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
This is for AP only. If Rx data frame targeted to one of associated clients,
transmit it back to the wireless media and don't deliver to the host.
For the multicast frames, deliver to both host and wireless media.
Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
It is expected that driver completes NAPI when less than
full budget is consumed.
Fulfill this requirement.
Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
These changes add support for BCM4345 SDIO chipset.
Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Reviewed-by: Arend Van Spriel <arend@broadcom.com>
Reviewed-by: Hante Meuleman <meuleman@broadcom.com>
Reviewed-by: Daniel (Deognyoun) Kim <dekim@broadcom.com>
Signed-off-by: Syed Asifful Dayyan <syedd@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Msgbuf is using a wait_event_timeout to wait for the response on
an ioctl. The wakeup routine uses waitqueue_active to see if
wait_event_timeout has been called. There is a chance that the
response arrives before wait_event_timeout is called, this
will result in situation that wait_event_timeout never gets
woken again and assumed result will be a timeout. This patch
removes that errornous situation by always setting the
ctl_completed var before checking for queue active.
Reviewed-by: Arend Van Spriel <arend@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Signed-off-by: Hante Meuleman <meuleman@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
SDIO is using a "shared" variable to handoff ctl frames to DPC
and to see when they are done. In a timeout situation this can
lead to erroneous situation where DPC started to handle the ctl
frame while the timeout expired. This patch will fix this by
adding locking around the shared variable.
Reviewed-by: Arend Van Spriel <arend@broadcom.com>
Reviewed-by: Franky (Zhenhui) Lin <frankyl@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Reviewed-by: Daniel (Deognyoun) Kim <dekim@broadcom.com>
Signed-off-by: Hante Meuleman <meuleman@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
The watchdog thread is used to put the SDIO bus to sleep when the
system is idling. This patch simplifies the way it is determined
when sleep can be entered.
Reviewed-by: Arend Van Spriel <arend@broadcom.com>
Reviewed-by: Franky (Zhenhui) Lin <frankyl@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Reviewed-by: Daniel (Deognyoun) Kim <dekim@broadcom.com>
Signed-off-by: Hante Meuleman <meuleman@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
On removal of SDIO card both functions of card will be getting
a remove call. When the first is hanging in ctrl frame xmit then
the second will cause oops. This patch fixes the xmit ctrl
handling in case of serious errors and also limits the handling
for remove to function 1 only.
Reviewed-by: Arend Van Spriel <arend@broadcom.com>
Reviewed-by: Franky (Zhenhui) Lin <frankyl@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Reviewed-by: Daniel (Deognyoun) Kim <dekim@broadcom.com>
Signed-off-by: Hante Meuleman <meuleman@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
To prepare for reset ath5k should finish all asynchronous tasks. At
first, it disables the interrupt generation, then it waits for the
interrupt handler and tasklets completion, and then proceeds to the HW
configuration update. But it does not consider that the interrupt
handler or tasklet re-enables the interrupt generation. And we fall in a
situation when ath5k assumes that interrupts are disabled, but it is
not.
This can lead to different consequences, such as reception of the frame,
when we do not expect it. Under certain circumstances, this can lead to
the following warning:
WARNING: at ath5k/base.c:589 ath5k_tasklet_rx+0x318/0x6ec [ath5k]()
invalid hw_rix: 1a
[..]
Call Trace:
[<802656a8>] show_stack+0x48/0x70
[<802dd92c>] warn_slowpath_common+0x88/0xbc
[<802dd98c>] warn_slowpath_fmt+0x2c/0x38
[<81b51be8>] ath5k_tasklet_rx+0x318/0x6ec [ath5k]
[<8028ac64>] tasklet_action+0x8c/0xf0
[<80075804>] __do_softirq+0x180/0x32c
[<80196ce8>] irq_exit+0x54/0x70
[<80041848>] ret_from_irq+0x0/0x4
[<80182fdc>] ioread32+0x4/0xc
[<81b4c42c>] ath5k_hw_set_sleep_clock+0x2ec/0x474 [ath5k]
[<81b4cf28>] ath5k_hw_reset+0x50/0xeb8 [ath5k]
[<81b50900>] ath5k_reset+0xd4/0x310 [ath5k]
[<81b557e8>] ath5k_config+0x4c/0x104 [ath5k]
[<80d01770>] ieee80211_hw_config+0x2f4/0x35c [mac80211]
[<80d09aa8>] ieee80211_scan_work+0x2e4/0x414 [mac80211]
[<8022c3f4>] process_one_work+0x28c/0x400
[<802df8f8>] worker_thread+0x258/0x3c0
[<801b5710>] kthread+0xe0/0xec
[<800418a8>] ret_from_kernel_thread+0x14/0x1c
Fix this issue by adding a new status flag, which forbids to re-enable
the interrupt generation until the HW configuration is completed.
Note: previous patch, which reorders the Rx disable code helps to avoid
the above warning, but not fixes the root cause of unexpected frame
receiving.
CC: Jiri Slaby <jirislaby@gmail.com>
CC: Nick Kossifidis <mickflemm@gmail.com>
CC: Luis R. Rodriguez <mcgrof@do-not-panic.com>
Reported-by: Christophe Prevotaux <cprevotaux@nltinc.com>
Tested-by: Christophe Prevotaux <cprevotaux@nltinc.com>
Tested-by: Eric Bree <ebree@nltinc.com>
Signed-off-by: Sergey Ryazanov <ryazanov.s.a@gmail.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
ath5k updates the channel pointer and after that it stops the Rx logic
and apply channel to HW. In case of channel switch, such sequence
creates a small window when a frame, which is received on the old
channel is considered as a frame received on the new one.
The most notable consequence of this situation occurs during the switch
from 2 GHz band (CCK+OFDM) to the 5GHz band (OFDM-only). Frame received
with CCK rate, e.g. beacon received at the 1mbps, causes the following
warning:
WARNING: at ath5k/base.c:589 ath5k_tasklet_rx+0x318/0x6ec [ath5k]()
invalid hw_rix: 1a
[..]
Call Trace:
[<802656a8>] show_stack+0x48/0x70
[<802dd92c>] warn_slowpath_common+0x88/0xbc
[<802dd98c>] warn_slowpath_fmt+0x2c/0x38
[<81b51be8>] ath5k_tasklet_rx+0x318/0x6ec [ath5k]
[<8028ac64>] tasklet_action+0x8c/0xf0
[<80075804>] __do_softirq+0x180/0x32c
[<80196ce8>] irq_exit+0x54/0x70
[<80041848>] ret_from_irq+0x0/0x4
[<80182fdc>] ioread32+0x4/0xc
[<81b4c42c>] ath5k_hw_set_sleep_clock+0x2ec/0x474 [ath5k]
[<81b4cf28>] ath5k_hw_reset+0x50/0xeb8 [ath5k]
[<81b50900>] ath5k_reset+0xd4/0x310 [ath5k]
[<81b557e8>] ath5k_config+0x4c/0x104 [ath5k]
[<80d01770>] ieee80211_hw_config+0x2f4/0x35c [mac80211]
[<80d09aa8>] ieee80211_scan_work+0x2e4/0x414 [mac80211]
[<8022c3f4>] process_one_work+0x28c/0x400
[<802df8f8>] worker_thread+0x258/0x3c0
[<801b5710>] kthread+0xe0/0xec
[<800418a8>] ret_from_kernel_thread+0x14/0x1c
The easiest way to reproduce this warning is to run scan with dualband
NIC in noisy environments, when the channel 11 runs multiple APs. In my
tests if the APs num >= 12, the warning appears in the first few
seconds of scanning.
In order to fix this, the Rx disable code moved to a higher level and
placed before the channel pointer update. This is also makes the code a
bit more symmetrical, since we disable and enable the Rx in the same
function.
In fact, at the pointer update time new frames should not appear,
because interrupt generation at this point should already be disabled.
The next patch should address this issue.
CC: Jiri Slaby <jirislaby@gmail.com>
CC: Nick Kossifidis <mickflemm@gmail.com>
CC: Luis R. Rodriguez <mcgrof@do-not-panic.com>
Reported-by: Christophe Prevotaux <cprevotaux@nltinc.com>
Tested-by: Christophe Prevotaux <cprevotaux@nltinc.com>
Tested-by: Eric Bree <ebree@nltinc.com>
Signed-off-by: Sergey Ryazanov <ryazanov.s.a@gmail.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
* 8000 device family work
* Update to the BT Coex firmware API
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Merge tag 'iwlwifi-next-for-kalle-2015-03-12' of https://git.kernel.org/pub/scm/linux/kernel/git/iwlwifi/iwlwifi-next
* Location Aware Regulatory was added by Arik
* 8000 device family work
* Update to the BT Coex firmware API
In the case of AF_INET s_addr was set to INADDR_ANY (0) which which both
symmetric with the AF_INET6 case, where s_addr is not set, and unnecessary
as udp_conf is zeroed out earlier in the same function.
I suspect this change does not have any run-time effect due to compiler
optimisations. But it does make the code a little easier on the/my eyes.
Cc: Tom Herbert <therbert@google.com>
Signed-off-by: Simon Horman <simon.horman@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The PHY state machine (in drivers/net/phy/phy.c) will unconditionally
call phydev->adjust_link (macb_handle_link_change) when polling in the
PHY_CHANGELINK state. As currently written, macb always ends up
requesting a new tx_clk frequency in macb_handle_link_change. It is a
waste of time to request a new tx_clk frequency if the link state hasn't
changed, as the tx_clk will already be configured properly.
Let's only request a new tx_clk clock frequency when necessary.
Signed-off-by: Jaeden Amero <jaeden.amero@ni.com>
Cc: Josh Cartwright <joshc@ni.com>
Cc: Soren Brinkmann <soren.brinkmann@xilinx.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
We don't delete napi from hash list during module exit. This will
cause the following panic when doing module load and unload:
BUG: unable to handle kernel paging request at 0000004e00000075
IP: [<ffffffff816bd01b>] napi_hash_add+0x6b/0xf0
PGD 3c5d5067 PUD 0
Oops: 0000 [#1] SMP
...
Call Trace:
[<ffffffffa0a5bfb7>] init_vqs+0x107/0x490 [virtio_net]
[<ffffffffa0a5c9f2>] virtnet_probe+0x562/0x791815639d880be [virtio_net]
[<ffffffff8139e667>] virtio_dev_probe+0x137/0x200
[<ffffffff814c7f2a>] driver_probe_device+0x7a/0x250
[<ffffffff814c81d3>] __driver_attach+0x93/0xa0
[<ffffffff814c8140>] ? __device_attach+0x40/0x40
[<ffffffff814c6053>] bus_for_each_dev+0x63/0xa0
[<ffffffff814c7a79>] driver_attach+0x19/0x20
[<ffffffff814c76f0>] bus_add_driver+0x170/0x220
[<ffffffffa0a60000>] ? 0xffffffffa0a60000
[<ffffffff814c894f>] driver_register+0x5f/0xf0
[<ffffffff8139e41b>] register_virtio_driver+0x1b/0x30
[<ffffffffa0a60010>] virtio_net_driver_init+0x10/0x12 [virtio_net]
This patch fixes this by doing this in virtnet_free_queues(). And also
don't delete napi in virtnet_freeze() since it will call
virtnet_free_queues() which has already did this.
Fixes 91815639d8 ("virtio-net: rx busy polling support")
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The return value in iwl_mvm_get_wakeup_status() is a bit unclear in
that it's not obvious that we don't leak fw_status in some cases.
Use fw_status directly with ERR_PTR() and return only it, that way
the compiler has a chance of proving that it's uninitialized (if it
ever is due to new changes.)
Additionally, this removes a smatch warning since smatch couldn't
figure out that fw_status can't, in fact, leak here.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
When IWLWIFI_DEBUGFS is not set, we should not unlock the mutex after
calling iwl_mvm_query_wakeup_reasons(), because this function unlocks
it already. Move the goto out_iterate outside the #ifdef.
Change-Id: I13d86402aecf0eeec44b1abbe2b244fbc706a5eb
Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
The code here is a little confusing, the iwl_mvm_te_check_disconnect()
will check that the interface is a station, but going into it after
already having processed the time even end for P2P seems strange at
first look.
Put a switch statement there to distinguish the interface types and
make this more readable.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
We previously enabled the smart FIFO (SF) in BSS only after
association.
This cause interrupt latency on P2P on certain devices.
Change the working model to enable the SF all the time and
play with the timeout values based on the association state.
This change was not tested on older firwmares, so make it
happen only on -13.ucode and up.
Signed-off-by: Eran Harary <eran.harary@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
More sub system IDs were introduced for the 8260 series.
Add the new sub system IDs so the cards can be recognized.
Signed-off-by: Oren Givon <oren.givon@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
The firmware was not using the new API, so we don't need to
differentiate between the different stages of this new API.
The main difference here is that most of the hard coded
values are not sent through the command anymore.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
The newer devices will enable a new register for this
(DEVICE_SET_NMI_8000B_REG), but the interrupt handler
isn't wired yet.
Keep the old register for now.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
When a station goes to sleep, we can't transmit any frame
to it. This means that until that station will wake up, a
queue that is dedicated to this station won't progress at
all. Take this into account when monitoring stuck queues
and don't account for the time the station was asleep.
This allows to mask false positives where the queues are
stuck not because of a bug, but because of the station
being asleep.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
This allows the op_mode to let the transport know that a
queue is currently frozen and that its timer should be
stopped.
When the queue is unfrozen, its timer should be set to
expire after the remainder of the timeout has elapsed.
This can be used when stations go to sleep. When a station
goes to sleep, the op_mode can freeze the timer so that the
queue will never be considered as stuck. When the station
wakes up, the queue will be unfrozen.
This is meant to avoid false positives that would happen if
a buggy station goes to sleep for a very long time. In case
we have a dedicated queue for this station (BA agreement)
and it goes to sleep for a very long time, the queue would
rightfully be stopped during all that time. In this case,
the stuck queue timer could fire and that would be a false
positive.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
The Tx statistics weren't updated when using fixed rate for
debugging. Fix this as Tx statistics are useful in this use case.
Signed-off-by: Eyal Shapira <eyalx.shapira@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
RTNL is not taken during CT-kill so regulatory APIs cannot be invoked.
That's fine, since the HW is only brought up to check the temperature
during CT-kill. We don't expect Tx or scanning.
Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com>
Reviewed-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
When using IBSS, it's easily possible to exhaust the number
of available stations in the driver, so don't warn on it.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
When we load the firmware for the 8000 B step device, it'll
verify its signature. In the current version of the
hardware, there can be a race between the WiFi firmware
being loaded and the Bluetooth firmware being loaded.
Check that WiFi is authenticated, if not, take ownership
on the authentication machine to make sure that the WiFi
firmware will be authenticated.
Signed-off-by: Eran Harary <eran.harary@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
New sub system IDs were introduced for the 8260 series.
This patch adds them so new 8260 cards can be recognized.
Signed-off-by: Oren Givon <oren.givon@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Make the print a bit more readable.
Reported-by: Joe Perches <joe@perches.com>
Signed-off-by: Eyal Shapira <eyalx.shapira@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
If the FW returns an invalid channels count in response to an MCC request,
make sure we don't reference invalid indices in the channels array.
Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
When entering D0i3, the MVM mutex cannot be grabbed. This interferes
with the calculation of the number of connected TDLS stations during
the setup of the power cmd.
The goal is to disable power saving for all vifs while any TDLS station
is connected. For this purpose it is enough to keep the pm_enabled
member of all mvmvifs as false. An update of the power state already
occurs when a TDLS station is added/removed, so the values are correctly
updated.
Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
New NVM versions in LnP platforms have the lar_enable bits in a different
offset.
Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
We don't need to acquire MAC access for each access, it
makes much more sense to keep the MAC access. This speeds
up the Tx DMA stop flow significantly.
Moreover, if one channel can't be stopped, stop the others
but don't poll for them to avoid being stuck there for a
long time.
This solves a situation in which we were stuck in that flow
for way too long with a spinlock held which led to a kernel
panic.
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
In-order to recognize newer step of the device, the driver
must read the chip_version_id from the AUX bus MISC address
space. This will determine what firmware file will be
loaded.
Signed-off-by: Eran Harary <eran.harary@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
When we associate we always need to update the quotas. This
fixes a bug for cases in which quotas weren't udapted after
association.
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
