In some rare cases, the firmware can put the device to
sleep after the driver requested the access. This is
because the access request can take a short time to be
propagated to the firmware.
If that happens, the driver may think that it has access
since the firmware hasn't put the device to sleep yet, but
right after the driver's check, the firmware might put the
device to sleep.
Warn when this happens by allowing the firmware to finish
the "put the device sleep" flow so that the driver will
not get access to the device. This will make the issue
visible.
This still doesn't fix the race, but at least it makes
it more visible.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Currently, the firmware only sends temperature notificaitions inside
RX statistics notifications, which are tied to beacon filtering. This
is a problem because beacon filtering is not used with vifs that don't
receive beacons (e.g. P2P GO and AP), so the driver doesn't receive
temperature notifications in those cases. To solve that, the firmware
will be changed so that it sends DTS_MEASUREMENT_NOTIFICATIONs,
independently from the beacon filtering flows.
To support that, the driver needs to also handle unsolicited
DTS_MEASUREMENT_NOTIFICATIONs, that are not triggered by
DTS_TRIGGER_CMD_FLAGS_TEMP requests.
This change is backwards compatible and will simply not be used with
firmware versions that do not send the notifications.
Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Refactor the temperature handling code so that it is easier to reuse
it with other notification flows.
Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
The code to capture firmware errors works during the reconfiguration
phase after an error. As the D3->D0 transition uses the same flow to
get the D0 image reconfigured, this triggered and caused a firmware
coredump to be collected. This in turn, if it isn't picked up by
userspace, can cause module unloading to fail, which is how the bug
was detected.
To fix this issue, introduce a new status flag (D3_RECONFIG) and use
it to detect that during reconfiguration no coredump should be taken
and reported.
Reported-by: Avi Kraif <avix.kraif@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
When we need only one antenna, we should refrain from using
the antenna that is shared with BT if BT load is high.
Fix this.
Reviewed-by: Eyal Shapira <eyal@wizery.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
When Tx STBC is being used and RS switches to a search column
using the alternate antenna from the current one there is a
problem with using rs_rate_match to figure out which table
is the active and which one is the search one. The root cause
is because in STBC the antenna mask in the ucode rate is set
to ANT_AB and in this specific scenario it matches both the
active and search table (e.g. SISO_ANT_A and SISO_ANT_B).
This leads to tx stats being updated in the wrong table and later
on to getting stuck in a test window and not moving on to other
columns. If this happens during the initial search cycle we
never end it and therefore never enable aggregation which leads
naturally to severe througput degradation.
Fix it by deducing which table is which by knowing whether we're
in a search or not like it's being done in rs_rate_scale_perform
Signed-off-by: Eyal Shapira <eyalx.shapira@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Other contexts might call iwl_mvm_ref_sync() right before
we set IWL_MVM_STATUS_IN_D0I3, and then assume the fw/bus
is not in d0i3 state.
However, since we currently don't check for held references
in the d0i3_enter flow, we might enter d0i3 although there
is an active reference.
Solve it by aborting the d0i3 enter flow if there is an
active reference. Since users are assumed to use
iwl_mvm_ref_sync, which takes a ref before checking the
flag, we don't need further locking.
Signed-off-by: Eliad Peller <eliadx.peller@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
This was taken care of in case we're doing STBC with HT
but not when working with VHT.
Signed-off-by: Eyal Shapira <eyalx.shapira@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Even if running the driver with param init_dbg=1 - on INIT
image error - iwl_trans_stop_device() was still called. This
patch fixes that and calls iwl_trans_stop_device() on INIT
image failure only if init_dbg=0.
Signed-off-by: Liad Kaufman <liad.kaufman@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
When kfree() is all that's needed to free an object protected by RCU
there's a kfree_rcu() convenience function that can be used. This patch
updates the 6lowpan code to use this, thereby eliminating the need for
the separate peer_free() function.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This patch fixes a regression that was introduced by commit
cb77c3ec07. In addition to BT_CONFIG,
BT_CONNECTED is also a state in which we may get a remote name and need
to indicate over mgmt the connection status. This scenario is
particularly likely to happen for incoming connections that do not need
authentication since there the hci_conn state will reach BT_CONNECTED
before the remote name is received.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
The length counting previously done had an error in it, causing
the length down the data dumping function to be shorter than it
should be, causing the end of the data to get truncated off and
lost.
Cc: <stable@vger.kernel.org> [3.17+]
Fixes: 67c65f2cf7 ("iwlwifi: dump periphery registers to fw-error-dump")
Signed-off-by: Liad Kaufman <liad.kaufman@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
The variable 'tid' is already defined in this function, so use
just 't' for the new one. As we return from the function just
overwriting 'tid' would be acceptable, but less obvious to the
reader.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Mostly functions related to building Tx-commands for sending to FW.
Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
The status variable should be unsigned as the function call
requires a u32 not int pointer, fix that.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Correct the comments in this driver. Set the CRTSCTS flag means
automatic flow control is enabled.
Signed-off-by: Fugang Duan <B38611@freescale.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This fixes the following sparse warning:
net/bluetooth/amp.c:152:53: warning: Variable length array is used.
The warning itself is probably harmless since this kind of usage of
shash_desc is present also in other places in the kernel (there's even a
convenience macro SHASH_DESC_ON_STACK available for defining such stack
variables). However, dynamically allocated versions are also used in
several places of the kernel (e.g. kernel/kexec.c and lib/digsig.c)
which have the benefit of not exhibiting the sparse warning.
Since there are no more sparse warnings in the Bluetooth subsystem after
fixing this one it is now easier to spot whenever new ones might get
introduced by future patches.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
phy_read and phy_write are not set for every phy any more sine this:
commit d342b95dd7
Author: Rafał Miłecki <zajec5@gmail.com>
Date: Thu Jul 31 21:59:43 2014 +0200
b43: don't duplicate common PHY read/write ops
b43_phy_copy() accesses phy_read and phy_write directly and will fail
with some phys. This patch fixes the regression by using the
b43_phy_read() and b43_phy_write() functions which should be used for
read and write access.
This should fix this bug report:
https://bugzilla.kernel.org/show_bug.cgi?id=87731
Reported-by: Volker Kempter <v.kempter@pe.tu-clausthal.de>
Tested-by: Volker Kempter <v.kempter@pe.tu-clausthal.de>
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Changes in the vendor driver were added to rtlwifi, but some updates
to rtl8192se were missed, and the driver could neither scan nor connect.
There are other changes that will enhance performance, but this minimal
set fix the basic functionality.
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
There are typos in the handling of the descriptor pointers where the wrong
descriptor is referenced. There is also an error in which the pointer is
incremented twice.
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Device RTL8192EE uses a new form of trx flow. This fix sets up the descriptors
correctly.
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
that can cause a kernel crash. I'm not sure it's remotely
exploitable, but it's an important fix nonetheless.
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Merge tag 'mac80211-for-john-2014-11-10' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211
Johannes Berg <johannes@sipsolutions.net> says:
"This has just one fix, for an issue with the CCMP decryption
that can cause a kernel crash. I'm not sure it's remotely
exploitable, but it's an important fix nonetheless."
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Allow setting bandwidth related regulatory flags. These flags are mapped
to the corresponding channel flags in the specified range.
Make sure the new flags are consulted when calculating the maximum
bandwidth allowed by a regulatory-rule.
Also allow propagating the GO_CONCURRENT modifier from a reg-rule to a
channel.
Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com>
Reviewed-by: Luis R. Rodriguez <mcgrof@suse.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Radiotap vendor namespace data might still be useful, but we
reverted it because it used too much space in the RX status.
Put it back, but address the space problem by using a single
bit only and putting everything else into the skb->data.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
For multi-vif channel switches, we want to send
NL80211_CMD_CH_SWITCH_NOTIFY to the userspace to let it decide whether
other interfaces need to be moved as well. This is needed when we
want a P2P GO interface to follow the channel of a station, for
example.
Modify the code so that all interfaces can send CSA notifications.
Additionally, send notifications for STA CSA as well.
Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Send a channel switch notification to userspace when a channel switch
is requested or when we react to a remote CSA.
Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Add a new NL80211_CH_SWITCH_STARTED_NOTIFY message that can be sent to
the userspace when a channel switch process has started. This allows
userspace to take action, for instance, by requesting other interfaces
to switch channel as necessary.
This patch introduces a function that allows the drivers to send this
notification. It should be used when the driver starts processing a
channel switch initiated by a remote device (eg. when a STA receives a
CSA from the AP) and when it successfully starts a userspace-triggered
channel switch (eg. when hostapd triggers a channel swith in the AP).
Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
The device_timestamp value was left out of the event trace for
drv_pre_channel_switch by mistake. Add it.
Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
There was a mistake when merging commit 6d027bcc (mac80211: add
pre_channel_switch driver operation) for upstream. The assignment of
the values in the ch_switch structure came below the call to
drv_pre_channel_switch. Fix the order.
Fixes: 6d027bcc (mac80211: add pre_channel_switch driver operation)
Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This patch adds a netif_running check while trying to change the address
attributes via ioctl. While netif_running is true these attributes
should be only readable.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This patch adds a hacked solution for an interface dump with a running
lowpan interface. This will crash because lowpan and wpan interface use
the same arphdr. To change the arphdr will change the UAPI, this patch
checks on mtu which should on lowpan interface always different than
IEEE802154_MTU.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This patch adds rtnl lock hold mechanism while accessing wpan_dev
attributes. Furthermore these attributes should be protected by rtnl
lock and netif_running only.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This patch removes the setting of dev_addr on a monitor device. This
address should be zero. A monitor should only sniff and send raw frames
out. The address should be never used by upper layers and receiving
frame parsing.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This patch adds support for wpan_dev dump via nl802154 framework.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This patch adds support for dumping wpan_phy attributes via nl802154.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This patch adds a basic nl802154 framework. Most of this code was
grabbed from nl80211 framework.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This patch adds the new userspace header for nl802154. We don't place
this header in include/uapi now. This header could be modified in the
next time.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This patch adds new sysfs entries for wpan_phy index and name. This
needed for the new 802.15.4 userspace tool.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This patch adds a wpan_dev_list list into cfg802154_registered_device
struct. Also adding new wpan_dev into this list while
cfg802154_netdev_notifier_call. This behaviour is mostly grab from
wireless core.c implementation and is needed for preparing nl802154
framework.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This patch adds an iftype argument to the wpan_dev. This is needed to
get the interface type from netdev ieee802154_ptr. The subif data struct
can only accessible in mac802154 branch.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This patch adds a new cfg802154_rdev_list to remember all registered
cfg802154_registered_device structs. This is needed to prepare the
upcomming nl802154 framework.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This patch renames the wpan_phy_alloc function to wpan_phy_new. This
naming convention is like wireless and "wiphy_new" function.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This patch removes the mac_params from subif data struct. Instead we
manipulate the wpan attributes directly.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This patch moves all mac pib attributes into the wpan_dev struct.
Furthermore we can easier access these attributes over the netdev
802154_ptr pointer. Currently this is only possible over a complicated
callback structure in mac802154 because subif data structure is
accessable inside mac802154 only.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This patch reverts commit:
a7807d73 ("Bluetooth: 6lowpan: Avoid memory leak if memory allocation
fails")
which was wrong suggested by Alexander Aring. The function skb_unshare
run also kfree_skb on failure.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Cc: stable@vger.kernel.org # 3.18.x
Currently we ensure that the skb is freed on every error path in IPHC
decompression which makes it easy to introduce skb leaks. By centralising
the skb_free into the receive function it makes future decompression routines
easier to maintain. It does come at the expense of ensuring that the skb
passed into the decompression routine must not be copied.
Signed-off-by: Martin Townsend <mtownsend1973@gmail.com>
Acked-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Acked-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Opcodes in switch/case in hci_cmd_status_evt are not sorted
by value. This patch restores proper ordering.
Signed-off-by: Kuba Pawlak <kubax.t.pawlak@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Emmanuel Grumbach