CMD_SYNC is really 0 which is confusing:
if (cmd.flags & CMD_SYNC) is always false.
Fix this by simply removing its definition.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
rcu_assign_pointer() ensures that the initialization of a structure is
carried out before storing a pointer to that structure. However, in the
case that NULL is assigned there's no structure to initialize so using
RCU_INIT_POINTER instead is safe and more efficient.
Signed-off-by: Monam Agarwal <monamagarwal123@gmail.com>
[rewrite commit log]
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Now that mac80211 calls pre_rcu_remove and we set the
fw_id_to_mac_id pointer to -ENOENT before the station is
removed, we don't need to set fw_id_to_mac_id to -EINVAL
when the station is really removed.
Leave fw_id_to_mac_id to be -ENOENT which will let the
drain worker (iwl_mvm_sta_drained_wk) know that this station
is not to be drained.
We don't need to drain this station since it is our AP in
managed mode and we flush all its frames synchronously
anyway.
Setting the AP station to -EINVAL could lead to confusion
since internal stations are also reserved with -EINVAL,
this confusion showed up in the logs as:
Drained sta 0, but it is internal?
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
In order to restore the qos seq number on d0i3 exit,
we need to read it from the wowlan status.
However, in order to make sure we use correct seq num
for tx frames, we need to defer any outgoing frames,
and re-enqueue them only after the seq num is configured
correctly.
Sync new Tx aggregations with D0i3 so that the correct
seq num is used for them. Wait synchronously for D0i3
exit before starting a new Tx agg.
Signed-off-by: Eliad Peller <eliadx.peller@intel.com>
Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
We can now define the priority against BT per AC. This is
possible with a newer firmware that allows to define the
priority with 2 bits.
Note that this change is compatible with older firmware
since older firmware will simply ignore the new bit (11),
and we still set the old bit (12) in the same cases as
before.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
The d3/d0i3 fw code requires the sta_id to be 0
(this is used to determine the rates and keys
to use in arp offloading).
Reserve sta_id 0 to station interface in order
to comply with this requirement.
Change some functions prototypes in order to
make the allocation function know about
the interface type.
Signed-off-by: Eliad Peller <eliadx.peller@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Schedule work to query the wakeup reasons, and
disconnect in some cases (e.g. beacon loss).
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>
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>
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>
RTS protection was turned on once aggregation was enabled but it
was never turned off. Remove turning on RTS protection in the LQ command
completely as TX_CMD_FLG_PROT_REQUIRE gets set in iwl_mvm_set_tx_cmd
for every Tx which is part of an aggregation. This would already cause
RTS protection to be used during aggregations.
Signed-off-by: Eyal Shapira <eyal@wizery.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
This patch adds a cipher scheme support to extend a set of
the supported ciphers. The driver reads a cipher scheme list TLV
from FW image and passes it to mac80211 on hw registration.
After the cipher schemes are registered the driver handles key
installation and Tx/Rx calls related to the new ciphers.
Signed-off-by: Max Stepanov <Max.Stepanov@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
iwlmvm relies on the current mac80211 behaviour of allowing
station pointers to be valid for an RCU grace period after
returning from the sta_state() callback. To optimise these
cases, this behaviour is going away, so make the driver use
the new sta_pre_rcu_remove() method to clear the pointer in
the fw_id_to_mac_id[] array.
Since this may happen while the station is still present in
the firmware, don't set the pointer to NULL but to -ENOENT
to mark this particular case. In client mode, the station
is kept even longer (until marking the MAC as unassociated)
so the drain flow must take this new behavior into account.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This is just a helper function to go from the mac80211
station struct to our internal one, to later allow us
to avoid temporary 'mvmsta' variables.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Remove the flags parameter which should be set to sync or async
according to whether this is called during sta init or not.
Signed-off-by: Eyal Shapira <eyal@wizery.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
At the firmware level, IBSS support has similar programming
requirements as AP/GO support, so use the same functions with
just small differences.
With IBSS only a single virtual interface can be used, so no
changes in the advertised interface combinations are needed.
For now, don't use hardware crypto for the GTKs in IBSS mode,
the firmware should support it though.
Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Until now, after WoWLAN, we weren't able to keep the
connection to the AP because the firmware didn't give
us the right information. Since the firmware API has
been changed to include all the information we need,
change the driver to work with the new API (if it is
available) and program all the relevant information
in mac80211 to keep the connection.
Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Some NICs embedded in platforms that have only 16 Tx queues,
this affect the mapping of the Tx queues.
Signed-off-by: Eytan Lifshitz <eytan.lifshitz@intel.com>
Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Reviewed-by: Gregory Greenman <gregory.greenman@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Add support for new station management firmware API. The old
ADD_MODIFY_STA command has been replaced with two: a modified
ADD_MODIFY_STA and a new ADD_MODIFY_STA_KEY command.
Signed-off-by: Max Stepanov <Max.Stepanov@intel.com>
Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
When a not fully started aggregation session is destroyed
and flushed, we get a warning, e.g.
WARNING: at drivers/net/wireless/iwlwifi/pcie/tx.c:1142 iwl_trans_pcie_txq_disable+0x11c/0x160
queue 16 not used
Modules linked in: [...]
Pid: 5135, comm: hostapd Tainted: G W O 3.5.0 #10
Call Trace:
wlan0: driver sets block=0 for sta 00:03:7f:10:44:d3
[<ffffffff81036492>] warn_slowpath_common+0x72/0xa0
[<ffffffff81036577>] warn_slowpath_fmt+0x47/0x50
[<ffffffffa0368d6c>] iwl_trans_pcie_txq_disable+0x11c/0x160 [iwlwifi]
[<ffffffffa03a2099>] iwl_mvm_sta_tx_agg_flush+0xe9/0x150 [iwlmvm]
[<ffffffffa0396c43>] iwl_mvm_mac_ampdu_action+0xf3/0x1e0 [iwlmvm]
[<ffffffffa0293ad3>] ___ieee80211_stop_tx_ba_session+0x193/0x920 [mac80211]
[<ffffffffa0294ed8>] __ieee80211_stop_tx_ba_session+0x48/0x70 [mac80211]
[<ffffffffa029159f>] ieee80211_sta_tear_down_BA_sessions+0x4f/0x80 [mac80211]
[<ffffffffa028a686>] __sta_info_destroy+0x66/0x370 [mac80211]
[<ffffffffa028abb4>] sta_info_destroy_addr_bss+0x44/0x70 [mac80211]
[<ffffffffa02a3e26>] ieee80211_del_station+0x26/0x50 [mac80211]
[<ffffffffa01e6395>] nl80211_del_station+0x85/0x200 [cfg80211]
when a station deauthenticated from us without fully setting
up the aggregation session.
Fix this by checking the aggregation state before removing
the hardware queue.
Cc: stable@vger.kernel.org
Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
The firmware / HW can't support more than 16 Rx BA sessions.
Deny any attemps to open more sessions than that.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
We didn't release the Rx AMPDU ressources properly.
This bug led to firmware assert after 16 BA sessions.
Cc: <stable@vger.kernel.org> [3.9+]
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
The LQ command argument isn't needed, it's always taken from the
station struct that's already passed, remove the argument.
Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
The MCAST queue should be enabled after DTIM only.
According to fw API, the MCAST must not be attached to any
station, but should appear in the mcast_qid of the AP's
mac context only.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
The firmware API wasn't being used correctly, fix that.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
In order to avoid NIC destruction due to high temperature,
CT kill will power down the NIC.
To avoid this, thermal throttling will decrease throughput
to prevent the NIC from reaching the temperature at which
CT kill is performed.
Signed-off-by: Eytan Lifshitz <eytan.lifshitz@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Move the counter for non-AMPDU frames to mvm. It is needed
for the drain flow which happens once the ieee80211_sta has
been freed, so keeping it in iwl_mvm_sta which is embed into
ieee80211_sta is not a good idea.
Also, since its purpose it to remove the STA in the fw only
after all the frames for this station have exited the shared
Tx queues, we need to decrement it in the reclaim flow. This
flow can happen after ieee80211_sta has been removed, which
means that we have no iwl_mvm_sta there. So we can't know
what is the vif type. Hence, we know audit these frames for
all the vif types.
In order to avoid spawning sta_drained_wk all the time, we
now check that we are in a flow in which draining might
happen - only when mvmsta is NULL. This is better than
previous code that would spawn sta_drained_wk all the time
in AP mode.
Cc: stable@vger.kernel.org [3.9]
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Reviewed-by: Ilan Peer <ilan.peer@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Using IWL_MVM_STATION_COUNT and IWL_INVALID_STATION together
isn't a good idea as they have different values. Always use
IWL_MVM_STATION_COUNT for an invalid station in MVM and move
the definition of the IWL_INVALID_STATION constant into the
DVM driver to avoid making such mistakes again. The one use
in the transport code can be hard-coded to -1 instead as the
station ID is passed as an integer there.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
When a station is added, we need to tell the firmware what
the SMPS settings and number of streams are. After having
the initial data, the firmware will track future changes
by itself.
Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
mac80211 tells us when we need to dump the frames from the
AGG queue instead of releasing them as single MPDUs.
Being able to differentiate between the different cases
(IEEE80211_AMPDU_TX_STOP_*) allows us to handle races better.
When the station is removed, mac80211 asks to flush and
removes the station right away.
This allows to avoid a case where we still have frames in
AGG queues, but the station has been remove already.
Note that we can have frames on the shared queues, but this
is not a problem: the station in the fw will be kept until
all the frames on the shared queues have been drained.
AGG queues are a special case since they are dynamically
allocated.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
When we stop an AGG session, we need to look at the sequence
numbers in in the private area of the ieee80211_sta struct.
This allows us to know is the queue is empty. To get access
to this private area, we use fw_id_to_mac_id that maps
sta_id (index of the STA in fw table) to ieee80211_sta.
When the STA exists in fw, but not in mac80211, we set
an ERR ptr in fw_id_to_mac_id.
But if we first set an ERR ptr to fw_id_to_mac_id, and only
then flush the queues, then we won't be able to access the
sequence numbers in ieee80211_sta from the reclaim flow.
This means that we will never be able to release an AGG
queue when a station is deleted.
So first, flush the queue. That will let the reclaim flow
call iwl_mvm_check_ratid_empty which will disable the AGG
queue as needed, and only then, remove the mapping in
fw_id_to_mac_id.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
7000.c was released as GPL only by mistake: it should be
dual licensed - GPL / BSD.
The file that contains the license in the kernel is COPYING
and not LICENSE.GPL.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Move the sequence number arithmetic code from mac80211 to
ieee80211.h so others can use it. Also rename the functions
from _seq to _sn, they operate on the sequence number, not
the sequence_control field.
Also move macros to convert the sequence control to/from
the sequence number value from various drivers.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Since the device is being restarted, all the Rx / Tx Block
Ack sessions are been wiped out by the driver. So ignore
the requests from mac80211 that stops Tx agg while
reconfiguring the device.
Note that stopping a non-existing Rx BA session is harmless,
so just honor mac80211's request.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
All station commands must include a valid MAC ID,
the ID 0 is randomly valid in some cases, but we
must set the ID properly. Do that by passing the
right station and using its mac_id_n_color.
Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
In managed mode, the HT/VHT capabilities aren't set when
the station is initially added, so update the station
when it is marked associated. In AP/GO mode, the station
will typically be added with full capabilities today,
but an upcoming change in hostapd may mean a similar
scenario as for managed mode, therefore do the update
unconditionally.
Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
When a TKIP key is updated with a station pointer that is NULL it is
a GTK, so it should use the AP's station ID. Fix the code to do that.
Signed-off-by: Beni Lev <beni.lev@intel.com>
Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Fixes an issue that smatch pointed out:
1118
1119 key_flags = cpu_to_le16(keyconf->keyidx & STA_KEY_FLG_KEYID_MSK);
^^^^^^^^^^^^^^^
This is s8.
^^^^^^^^^^^^^^^^^^^^^
STA_KEY_FLG_KEYID_MSK is 0x300.
The result after the bitwise AND is always zero because 0xff & 0x300.
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Newer firmware revisions have a completely new
firmware API. This is the new driver for this
new API.
I've listed the people who directly contributed
code, but many others from various teams have
contributed in other ways.
Cc: Alexander Bondar <alexander.bondar@intel.com>
Cc: Amit Beka <amit.beka@intel.com>
Cc: Amnon Paz <amnonx.paz@intel.com>
Cc: Assaf Krauss <assaf.krauss@intel.com>
Cc: David Spinadel <david.spinadel@intel.com>
Cc: Dor Shaish <dor.shaish@intel.com>
Cc: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Cc: Eytan Lifshitz <eytan.lifshitz@intel.com>
Cc: Ilan Peer <ilan.peer@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Emmanuel Grumbach