As a debug tool, we dump the SRAM from the device when an
error occurs. The main users of this want it in a different
format, so change the format to suit their needs.
Also - add a short delay between the prints to make sure
that the user space logger can catch up.
This happens only when the firmware asserts, and only when
fw_restart is set to 0 which is typically a testing
configuration.
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Based on the Bluetooth activity grading, we can stop using
the shared antenna and ask the stations to honor the new
SMPS state.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
If a vif is in low latency mode, it should be in primary
channel.
Also tell BT Coex about the change when a vif enters or
exits low latency mode.
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Limit the scheduling duration of bindings without a low-latency
interface in the firmware, this prevents those bindings from
occupying the medium for a period of time longer than what we
want for the other interfaces in low-latency mode.
As older firmware doesn't do anything with the max_duration field
and ignores it completely, there's no need for a firmware flag.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
If there is/are interface(s) in low-latency mode, reserve a
percentage (currently 64%) of the quota for that binding to
improve the quality of service for those interfaces. However,
if there's more than one binding that has low-latency, then
give up and don't reserve, we can't allocate more than 100%.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
While an interface is in low-latency mode, for now powersave
should be disabled for it, so take low-latency into account
in the powersave code and force powersave recalculation when
low-latency mode changes.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
For various traffic use cases, we want to be able to treat multi-
channel scenarios differently. Introduce a low-latency framework
that currently only has a debugfs file to enable low-latency mode,
but can later be extended.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Notify scan completed if fw_restart flow isn't going to be run.
Otherwise, the scan will stay stack forever and mac80211 will
not be able to remove the interface.
Signed-off-by: David Spinadel <david.spinadel@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Don't stop scheduled scan before reporting HW restart;
mac80211 was changed to reschedule it after reconfigure.
Signed-off-by: David Spinadel <david.spinadel@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Since we use IWL_MVM_STATION_COUNT all over the driver, we
need to make sure that it is the right constant to look at.
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
We somtimes need to fetch the iwl_mvm_sta structure from a
station index - provide a helper to do that.
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
APMG HW block was removed in this NIC, hence, no need to
configure it.
Signed-off-by: Eran Harary <eran.harary@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
The identification of the hardware section in the NVM
of new devices has been changed, hence the need to add it
to iwl_cfg and adapt the code that uses this value
accordingly.
Signed-off-by: Eran Harary <eran.harary@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Newer firmware will support uAPSD clients in AP/GO mode, so complete
the driver support for it. The way it works is described in comments
in the code, but basically the driver just has to pass down all the
mac80211 requests and do accounting on agg/non-agg queues properly.
For older firmware, this doesn't change anything as it ignores the
fields used by the new firmware, and we only advertise uAPSD support
when the firmware does.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Not doing so will let BT kill our probe requests leading to
failures in scan.
Cc: <stable@vger.kernel.org> [3.10+]
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
We had a bug that prevented us from removing a station
after we entered the drain flow:
We assign sta to be NULL if it was an error value.
Then we tested it against -EBUSY, but forget to retrieve
the value again from mvm->fw_id_to_mac_id[sta_id].
Due to this bug, we ended up never removing the STA from
the firmware. This led to an firmware assert when we remove
the GO vif.
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Configure scheduled scan to notify match found on every beacon
or probe response if the scan request doesn't contain valid ssid
list for filtering.
Without this configuration the FW passes all beacons to the host
but doesn't notify the stack that the scan results are ready for
processing.
Signed-off-by: David Spinadel <david.spinadel@intel.com>
Reviewed-by: Alexander Bondar <alexander.bondar@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
This can be useful to be able to spot the firmware version
from the error reports without needing to fetch it from
another place.
Cc: <stable@vger.kernel.org> [3.10+]
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
The iwlwifi scheduled scan implementation doesn't adhere to the
userspace API correctly - the API assumes that any new incoming
'incompatible' request (like scan or remain-on-channel for this
driver) will just cancel the scheduled scan. Instead our driver
relies on userspace cancelling it, thus breaking existing wpa_s
versions.
Cc: stable@vger.kernel.org [3.13]
Fixes: 35a000b7c1 ("iwlwifi: mvm: support sched scan if supported by the fw")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
The address pointer used in the function shouldn't be static
since it's local data only. Having it static causes races if
a single machine has two devices, as the pointer would be
shared between instances.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
If we try to write NVM that do not exist, the function will return
uninitialized value. fixed.
Signed-off-by: Eytan Lifshitz <eytan.lifshitz@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Add an inline helper function for getting an RX packet's
length or payload length and use it throughout the code
(most of which I did using an spatch.)
While at it, adjust some code, and remove a bogus comment
from the dvm calibration code.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Reviewed-by: Eran Harary <eran.harary@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
The request of SMPS issued by the Thermal Throttling code
was not reset when we disassociated - fix that.
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
It's a bit strange to treat an array as a pointer, so use proper
array indexing instead.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
If the length isn't set it means we want all the SRAM.
Also - this is perfectly valid to partially dump starting
at offset 0.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Discovered by klocwork
Array 'iwl_rate_mcs' of size 15 may use index value(s) -1
* rs.c:2562: index = iwl_hwrate_to_plcp_idx(rate)
* rs.c:2562: Result of function call 'iwl_hwrate_to_plcp_idx(rate)' is '[-1,14]'
* rs.c:2565: Array 'iwl_rate_mcs' size is 15.
* rs.c:2565: Possible attempt to access element -1 of array 'iwl_rate_mcs'.
While at it stop using index = -1 and always use IWL_RATE_INVALID
Signed-off-by: Eyal Shapira <eyalx.shapira@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Some NIC comes with more than the 4 NVM (non volative
memory) sections described in the nvm_to_read array.
These NICs usually get their NVM from an external file
fetched from userland during init.
We already parsed the file, but sent to the NIC only 4 NVM
sections whereas there could be more sections in the file.
Fix this.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Since seq_number is incremented right after using
it, so printed seq_ctrl was actually the next
one to be used.
Fix it by incrementing the seq_number only later,
before saving it.
Additionally, use the IEEE80211_SEQ_TO_SN macro
in order to print the actual sequence number.
Signed-off-by: Eliad Peller <eliadx.peller@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
When we disassociate in managed mode, we flush the queues
after mac80211 has already removed the station.
During that time, the pointer to ieee80211_sta to the
fw_id_to_mac_id map is -EINVAL. In that case we should not
set the station as being drained when the last Tx of this
station has exited the shared Tx queue since we are
flushing all the queues anyway.
The draining logic is meant to be used in GO / AP mode only.
In GO / AP mode, we set -EBUSY in the fw_id_to_mac_id map.
This is why testing the ieee80211_sta pointer in the
fw_id_to_mac_id map with IS_ERR isn't enough to set the
station as draining, we need to check that it is -EBUSY.
The only impact of the bug was a print:
Drained sta 1, but it is internal?
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
If we can't switch to a column because no rates are supported
in that column this led to a state where the search cycle
got stuck and never ended. This in turn also led to aggregation
not being turned on. Fix this by marking a column as
visited if we can't switch to it.
Reported-and-tested-by: Karl Beldan <karl.beldan@gmail.com>
Signed-off-by: Eyal Shapira <eyal@wizery.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Cleanup of iwl_mvm_leds was missing in case of error,
resulting in the following warning:
WARNING: at lib/kobject.c:196 kobject_add_internal+0x1f4/0x210()
kobject_add_internal failed for phy0-led with -EEXIST, don't try to register things with the same name in the same directory.
which prevents further reloads of the driver.
Cc: stable@vger.kernel.org [3.10+]
Signed-off-by: Eliad Peller <eliadx.peller@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
The power settings need to be updated after a binding flow is done
and before quota calculations. This was missing in the start_ap_ibss()
flow. Fix it.
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
The state variable was not set to false in case of a failure to
complete the start_ap_ibss() flow.
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
None of these files are actually using any __init type directives
and hence don't need to include <linux/init.h>. Most are just a
left over from __devinit and __cpuinit removal, or simply due to
code getting copied from one driver to the next.
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Acked-by: Larry Finger <Larry.Finger@lwfinger.net>
Acked-by: Christian Lamparter <chunkeey@googlemail.com>
Acked-by: Gertjan van Wingerde <gwingerde@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Found by klocwork analysis.
mvm could be NULL which may cause a NULL dereference
in a theoretical call flow
rs_fill_lq_cmd(mvm = NULL, ...)
rs_build_rates_table
rs_fill_rates_for_column
ucode_rate_from_rs_rate
IWL_ERR(mvm,...)
No real reason for passing NULL to rs_fill_lq_cmd so fix that.
Reported-by: Eytan Lifshitz <eytan.lifshitz@intel.com>
Signed-off-by: Eyal Shapira <eyal@wizery.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Currently, the MAC context tsf_id assignment and the master/slave
relations are determined only when a new vif is added, as part
of the MAC context resource allocation. However, at this stage, the
beacon interval is not known, and thus could not be taken into account
in the master-slave algorithm.
To fix this, recalculate the MAC context tsf_id assignment,
just before the MAC context is activated, i.e., just before
a station VMAC is configured to associated and before an AP
VMAC is started.
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Change the parameters for calculating an AP TBTT to 64/36 instead of
80/20, to increase the interval between a station vif and an AP
vif TBTT events.
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Instead of always calling ieee80211_beacon_loss() on every missed
beacons notification, call this function only if the number of
consecutive missed beacons from last rx is higher than a predefined
threshold.
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
If the channel min-width changes, we can update the PHY ctx, even if
it has multiple references.
Signed-off-by: Arik Nemtsov <arik@wizery.com>
Reviewed-by: Eliad Peller <eliad@wizery.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
This allows to format it at will using external tools.
Since different teams want it in different formats, dump
the raw data and everyone can play with the data the way
they want.
While at it - make this code slightly more robust by making
the required verification on the offsets / length in the
write handler.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Don't check if mvm->fw->cs is NULL since it can't be.
cs is an array member of iwl_fw, it can't be NULL.
Use memset(ptr, 0, sizeof(*ptr)); instead of
memset(ptr, 0, sizeof(struct ptr_type));
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
The firmware needs to be stopped quickly (100ms) after the
RFKILL interrupt fired. Failing to do so would allow the
firmware to access the radio registers which would lead to
a hardware error.
Before this change, we would kill the firmware only when
mac80211 stops the device which can take a fair amount of
time. Take a shortcut by stopping the device right away
in the interrupt.
This is not relevant if the current firmware is INIT
firmware since that firmware can run while in RFKILL.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
In case of invalid section_id, the function returns after
it aleready allocated memory. Fixed by change the order of actions.
Signed-off-by: Eytan Lifshitz <eytan.lifshitz@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
