History log of /net/mac80211/wme.c
Revision Date Author Comments
d98ad83ee86e523cc00cbf425f456fbd14b4fdc4 03-Sep-2014 Johannes Berg <johannes.berg@intel.com> mac80211: add Intel Mobile Communications copyright

Our legal structure changed at some point (see wikipedia), but
we forgot to immediately switch over to the new copyright
notice.

For files that we have modified in the time since the change,
add the proper copyright notice now.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
a74a8c846fb699f3277c0c21278bd4c414074b4a 22-Jul-2014 Johannes Berg <johannes.berg@intel.com> mac80211: don't duplicate station QoS capability data

We currently track the QoS capability twice: for all peer stations
in the WLAN_STA_WME flag, and for any clients associated to an AP
interface separately for drivers in the sta->sta.wme field.

Remove the WLAN_STA_WME flag and track the capability only in the
driver-visible field, getting rid of the limitation that the field
is only valid in AP mode.

Reviewed-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
1bf4bbb4024dcdab5e57634dd8ae1072d42a53ac 11-Feb-2014 Felix Fietkau <nbd@openwrt.org> mac80211: send control port protocol frames to the VO queue

Improves reliability of wifi connections with WPA, since authentication
frames are prioritized over normal traffic and also typically exempt
from aggregation.

Cc: stable@vger.kernel.org
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
32db6b54dfba38aa8fa4072b2a3fc6425139166a 17-Dec-2013 Kyeyoon Park <kyeyoonp@qca.qualcomm.com> mac80211: Add support for QoS mapping

Implement set_qos_map() handler for mac80211 to enable QoS mapping
functionality.

Signed-off-by: Kyeyoon Park <kyeyoonp@qca.qualcomm.com>
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
fa9ffc745610f31c6bc136d5a6a1782e00870e72 17-Dec-2013 Kyeyoon Park <kyeyoonp@qca.qualcomm.com> cfg80211: Add support for QoS mapping

This allows QoS mapping from external networks to be implemented as
defined in IEEE Std 802.11-2012, 10.24.9. APs can use this to advertise
DSCP ranges and exceptions for mapping frames to a specific UP over
Wi-Fi.

The payload of the QoS Map Set element (IEEE Std 802.11-2012, 8.4.2.97)
is sent to the driver through the new NL80211_ATTR_QOS_MAP attribute to
configure the local behavior either on the AP (based on local
configuration) or on a station (based on information received from the
AP).

Signed-off-by: Kyeyoon Park <kyeyoonp@qca.qualcomm.com>
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
3f52b7e328c526fa7a592af9bf5772c591ed38a4 30-Jan-2013 Marco Porsch <marco@cozybit.com> mac80211: mesh power save basics

Add routines to
- maintain a PS mode for each peer and a non-peer PS mode
- indicate own PS mode in transmitted frames
- track neighbor STAs power modes
- buffer frames when neighbors are in PS mode
- add TIM and Awake Window IE to beacons
- release frames in Mesh Peer Service Periods

Add local_pm to sta_info to represent the link-specific power
mode at this station towards the remote station. When a peer
link is established, use the default power mode stored in mesh
config. Update the PS status if the peering status of a neighbor
changes.
Maintain a mesh power mode for non-peer mesh STAs. Set the
non-peer power mode to active mode during peering. Authenticated
mesh peering is currently not working when either node is
configured to be in power save mode.

Indicate the current power mode in transmitted frames. Use QoS
Nulls to indicate mesh power mode transitions.
For performance reasons, calls to the function setting the frame
flags are placed in HWMP routing routines, as there the STA
pointer is already available.

Add peer_pm to sta_info to represent the peer's link-specific
power mode towards the local station. Add nonpeer_pm to
represent the peer's power mode towards all non-peer stations.
Track power modes based on received frames.

Add the ps_data structure to ieee80211_if_mesh (for TIM map, PS
neighbor counter and group-addressed frame buffer).

Set WLAN_STA_PS flag for STA in PS mode to use the unicast frame
buffering routines in the tx path. Update num_sta_ps to buffer
and release group-addressed frames after DTIM beacons.

Announce the awake window duration in beacons if in light or
deep sleep mode towards any peer or non-peer. Create a TIM IE
similarly to AP mode and add it to mesh beacons. Parse received
Awake Window IEs and check TIM IEs for buffered frames.

Release frames towards peers in mesh Peer Service Periods. Use
the corresponding trigger frames and monitor the MPSP status.
Append a QoS Null as trigger frame if neccessary to properly end
the MPSP. Currently, in HT channels MPSPs behave imperfectly and
show large delay spikes and frame losses.

Signed-off-by: Marco Porsch <marco@cozybit.com>
Signed-off-by: Ivan Bezyazychnyy <ivan.bezyazychnyy@gmail.com>
Signed-off-by: Mike Krinkin <krinkin.m.u@gmail.com>
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
40aefedc8b494d6a7006ceb9d051fbc58268c86e 22-Nov-2012 Marco Porsch <marco.porsch@etit.tu-chemnitz.de> mac80211: refactor ieee80211_set_qos_hdr

Return early if not a QoS Data frame.
Give proper documentation.

Signed-off-by: Marco Porsch <marco.porsch@etit.tu-chemnitz.de>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
00e96decfd0b927f975c98340a5982c5039eeaae 20-Jun-2012 Yoni Divinsky <yoni.divinsky@ti.com> mac80211: save wmm_acm per sdata

Save and configure the wmm_acm per sdata, rather than
per hardware.

If wmm_acm is saved per hardware when running two
interfaces simultaneously on the same hardware one
interface's wmm policy will be affected by the other
interface.

Signed-off-by: Yoni Divinsky <yoni.divinsky@ti.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
32c5057b22a60b23353dda93c57e475856ca286c 28-Mar-2012 Johannes Berg <johannes.berg@intel.com> mac80211: use IEEE80211_NUM_ACS

When comparing hw->queues to determine if the
device is QoS capable, use IEEE80211_NUM_ACS
instead of just 4.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
ded81f6ba934e792e441f20178683608cbc0b5cb 28-Mar-2012 Johannes Berg <johannes.berg@intel.com> mac80211: decouple # of netdev queues from HW queues

When we get more hardware queues, we'll still want
to only have netdev queues per AC, so set it up in
that way. If the hardware doesn't support QoS (by
not supporting at least 4 queues) the netdevs get
a single queue only (this is no change in behavior
as there are no drivers with 2 or 3 queues today.)

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
4670cf7a84dfbc3c5a9b50a12afdee0003a40ed8 27-Mar-2012 Johannes Berg <johannes.berg@intel.com> mac80211: make ieee80211_downgrade_queue static

There's no reason for it to not be static.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
d3c1597b8d1ba0447ce858c7c385eabcf69f2c8f 25-Nov-2011 Thomas Pedersen <thomas@cozybit.com> mac80211: fix forwarded mesh frame queue mapping

We can't rely on ieee80211_select_queue() to do its job at this point
since the skb->protocol is not yet known. Instead, factor out and reuse
the queue mapping logic for injected frames.

Also, to mitigate congestion, forwarded frames should be dropped if the
outgoing queue was stopped. This was not correctly implemented as we
were not checking the right queue. Furthermore, we were dropping frames
that had arrived to their destination if that queue was stopped.

Signed-off-by: Thomas Pedersen <thomas@cozybit.com>
Signed-off-by: Javier Cardona <javier@cozybit.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
b53be7920bd9bb1bb99fecc2ff537bc79d24082f 18-Nov-2011 Simon Wunderlich <simon.wunderlich@s2003.tu-chemnitz.de> mac80211: Add NoAck per tid support

This patch contains the processing changes in mac80211.

Signed-off-by: Simon Wunderlich <siwu@hrz.tu-chemnitz.de>
Signed-off-by: Mathias Kretschmer <mathias.kretschmer@fokus.fraunhofer.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
6fd67e937ece538e0ab766df96a9895e6fd622df 18-Nov-2011 Simon Wunderlich <simon.wunderlich@s2003.tu-chemnitz.de> mac80211: remove debugfs noack test

This feature has been superseded by the NoAck per Queue feature.

Signed-off-by: Simon Wunderlich <siwu@hrz.tu-chemnitz.de>
Signed-off-by: Mathias Kretschmer <mathias.kretschmer@fokus.fraunhofer.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
d0ce1855eab098c6257f1321b02b70f916064aaa 04-Nov-2011 Javier Cardona <javier@cozybit.com> mac80211: simplify mesh frame queue mapping and QoS

We only need to set the skb queue twice:

1. by the netdev, on local TX.
2. when forwarding a mesh frame.

We only need to set the qos header twice:

1. by mac80211, on local TX.
2. when putting a frame on the mpath->frame_queue

We also don't need the RA in order to set the proper queue mapping since
all mesh STAs are QoS, indicate this and do it once when the frame is
received. Also fixes an issue where the QoS header and queue mapping was not
set for unicast forwarded frames.

Signed-off-by: Javier Cardona <javier@cozybit.com>
Signed-off-by: Thomas Pedersen <thomas@cozybit.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
6cc00d545a21ed26696f3bda865ebf11eccbf2b5 04-Nov-2011 Thomas Pedersen <thomas@cozybit.com> mac80211: QoS multicast frames have No Ack policy

Previously QoS multicast frames had the Normal Acknowledgment QoS
control bits set. This would cause broadcast frames to be discarded by
peers with which we have a BA session, since their sequence number would
fall outside the allowed range. Set No Ack QoS control bits on multicast
QoS frames and filter these in de-aggregation code.

Signed-off-by: Thomas Pedersen <thomas@cozybit.com>

v2: Use proper QoS Ack Policy ctl field mask (Christian)

v3: Clean up conditional (Johannes)
Signed-off-by: John W. Linville <linville@tuxdriver.com>
68629c6133304f286a1f0c12d9aa8071a639f076 03-Nov-2011 Johannes Berg <johannes.berg@intel.com> mac80211: preserve EOSP in QoS header

Janusz reported that the EOSP bit in mac80211 was
getting cleared all the time. I had not found this
since I tested uAPSD with a device that always set
the bit itself. Preserve the bit when building the
QoS header.

Reported-by: Janusz Dziedzic <janusz.dziedzic@gmail.com>
Tested-by: Janusz Dziedzic <janusz.dziedzic@gmail.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
c2c98fdeb5c897499644eb247285c8e3dacc6450 29-Sep-2011 Johannes Berg <johannes.berg@intel.com> mac80211: optimise station flags

The flaglock in struct sta_info has long been
something that I wanted to get rid of, this
finally does the conversion to atomic bitops.

The conversion itself is straight-forward in
most places, a few things needed to change a
bit since we can no longer use multiple bits
at the same time.

On x86-64, this is a fairly significant code
size reduction:
text data bss dec hex
427861 23648 1008 452517 6e7a5 before
425383 23648 976 450007 6ddd7 after

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2154c81c32fa44364f83218a10d8dbec4e76d4f5 08-Sep-2011 Javier Cardona <javier@cozybit.com> mac80211: Mesh data frames must have the QoS header

Per sec 7.1.3.5 of draft 12.0 of 802.11s, mesh frames indicate the
presence of the mesh control header in their QoS header.

Signed-off-by: Javier Cardona <javier@cozybit.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
4777be41638cfab56c78b2a764a5f83beb6cfdd2 08-Sep-2011 Javier Cardona <javier@cozybit.com> mac80211: Start implementing QoS support for mesh interfaces

In order to support QoS in mesh, we need to assign queue mapping only
after the next hop has been resolved, both for forwarded and locally
originated frames. Also, now that this is fixed, remove the XXX comment
in ieee80211_select_queue().

Also, V-Shy Ho reported that the queue mapping was not being applied to
the forwarded frame (fwd_skb instead of skb). Fixed that as well.

Signed-off-by: Javier Cardona <javier@cozybit.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
04b7dcf979d71e870683c804802e44287a802760 22-Jun-2011 Johannes Berg <johannes.berg@intel.com> wireless: unify QoS control field definitions

Move all that mac80211 has into the generic
ieee80211.h header file and use them. At the
same time move them from mask+shift to just
bits and rename them for consistent names.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
172128468f61e16e1427238278b9ad775584aa89 22-Dec-2010 Johannes Berg <johannes.berg@intel.com> mac80211: cleanup select_queue

There's a redundant rcu_read_lock/unlock pair, a
redundant variable, and a few redundant accesses
to the 1d_to_ac array. Fix this to make the code
neater and easier to follow.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
4bce22b9b84032c77c7e038b07b24fcc706dfc10 16-Nov-2010 Johannes Berg <johannes.berg@intel.com> mac80211: defines for AC numbers

In many places we've just hardcoded the
AC numbers -- which is a relic from the
original mac80211 (d80211). Add constants
for them so we know what we're talking
about.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
debde9ea24d5512400456b1b64df361e422f078d 06-Jan-2010 John W. Linville <linville@tuxdriver.com> mac80211: fix-up build breakage in 2.6.33

"mac80211: fix skb buffering issue" is based on what will become 2.6.34,
so it includes an incompatible usage of sta_info_get. This patch will
need to be effectively reverted when merging for 2.6.34.

Signed-off-by: John W. Linville <linville@tuxdriver.com>
cf0277e714a0db302a8f80e1b85fd61c32cf00b3 05-Jan-2010 Johannes Berg <johannes@sipsolutions.net> mac80211: fix skb buffering issue

Since I removed the master netdev, we've been
keeping internal queues only, and even before
that we never told the networking stack above
the virtual interfaces about congestion. This
means that packets are queued in mac80211 and
the upper layers never know, possibly leading
to memory exhaustion and other problems.

This patch makes all interfaces multiqueue and
uses ndo_select_queue to put the packets into
queues per AC. Additionally, when the driver
stops a queue, we now stop all corresponding
queues for the virtual interfaces as well.

The injection case will use VO by default for
non-data frames, and BE for data frames, but
downgrade any data frames according to ACM. It
needs to be fleshed out in the future to allow
chosing the queue/AC in radiotap.

Reported-by: Lennert Buytenhek <buytenh@marvell.com>
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Cc: stable@kernel.org [2.6.32]
Signed-off-by: John W. Linville <linville@tuxdriver.com>
3b8d81e020f77c9da8b85b0685c8cd2ca7c7b150 17-Jun-2009 Johannes Berg <johannes@sipsolutions.net> mac80211: remove master netdev

With the internal 'pending' queue system in place, we can simply
put packets there instead of pushing them off to the master dev,
getting rid of the master interface completely.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
8f77f3849cc3ae2d6df9301785a3d316ea7d7ee1 07-Jun-2009 Johannes Berg <johannes@sipsolutions.net> mac80211: do not pass PS frames out of mac80211 again

In order to handle powersave frames properly we had needed
to pass these out to the device queues again, and introduce
the skb->requeue bit. This, however, also has unnecessary
overhead by needing to 'clean up' already tried frames, and
this clean-up code is also buggy when software encryption
is used.

Instead of sending the frames via the master netdev queue
again, simply put them into the pending queue. This also
fixes a problem where frames for that particular station
could be reordered when some were still on the software
queues and older ones are re-injected into the software
queue after them.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
e31a16d6f64ef0e324c6f54d5112703c3f13a9c4 21-May-2009 Zhu Yi <yi.zhu@intel.com> wireless: move some utility functions from mac80211 to cfg80211

The patch moves some utility functions from mac80211 to cfg80211.
Because these functions are doing generic 802.11 operations so they
are not mac80211 specific. The moving allows some fullmac drivers
to be also benefit from these utility functions.

Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: Samuel Ortiz <samuel.ortiz@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
d3707d9918d47c0997a6b1e4ae24e7ab55e43796 12-May-2009 Johannes Berg <johannes@sipsolutions.net> mac80211: make noack test available

There's this internal wifi_wme_noack_test variable that
we use to set the QoS control if set. For one, it is
unlikely that it is set. Secondly, if set it needs to
influence the IEEE80211_TX_CTL_NO_ACK TX control flag,
and finally we should also be able to set it at all, so
make it available in debugfs.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
0eeb59fe2cd84b62f374874a59e62402e13f48b3 05-Mar-2009 Jouni Malinen <jouni.malinen@atheros.com> mac80211: Fix WMM ACM parsing and AC downgrade operation

Incorrect local->wmm_acm bits were set for AC_BK and AC_BE. Fix this
and add some comments to make it easier to understand the AC-to-UP(pair)
mapping. Set the wmm_acm bits (and show WMM debug) even if the driver
does not implement conf_tx() handler.

In addition, fix the ACM-based AC downgrade code to not use the
highest priority in error cases. We need to break the loop to get the
correct AC_BK value (3) instead of returning 0 (which would indicate
AC_VO). The comment here was not really very useful either, so let's
provide somewhat more helpful description of the situation.

Since it is very unlikely that the ACM flag would be set for AC_BK and
AC_BE, these bugs are not likely to be seen in real life networks.
Anyway, better do these things correctly should someone really use
silly AP configuration (and to pass some functionality tests, too).

Remove the TODO comment about handling ACM. Downgrading AC is
perfectly valid mechanism for ACM. Eventually, we may add support for
WMM-AC and send a request for a TS, but anyway, that functionality
won't be here at the location of this TODO comment.

Signed-off-by: Jouni Malinen <jouni.malinen@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
96f5e66e8a79810e2982cdcfa28e554f3d97da21 12-Feb-2009 Johannes Berg <johannes@sipsolutions.net> mac80211: fix aggregation for hardware with ampdu queues

Hardware with AMPDU queues currently has broken aggregation.

This patch fixes it by making all A-MPDUs go over the regular AC queues,
but keeping track of the hardware queues in mac80211. As a first rough
version, it actually stops the AC queue for extended periods of time,
which can be removed by adding buffering internal to mac80211, but is
currently not a huge problem because people rarely use multiple TIDs
that are in the same AC (and iwlwifi currently doesn't operate as AP).

This is a short-term fix, my current medium-term plan, which I hope to
execute soon as well, but am not sure can finish before .30, looks like
this:
1) rework the internal queuing layer in mac80211 that we use for
fragments if the driver stopped queue in the middle of a fragmented
frame to be able to queue more frames at once (rather than just a
single frame with its fragments)
2) instead of stopping the entire AC queue, queue up the frames in a
per-station/per-TID queue during aggregation session initiation,
when the session has come up take all those frames and put them
onto the queue from 1)
3) push the ampdu queue layer abstraction this patch introduces in
mac80211 into the driver, and remove the virtual queue stuff from
mac80211 again

This plan will probably also affect ath9k in that mac80211 queues the
frames instead of passing them down, even when there are no ampdu queues.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
8b30b1fe368ab03049435884c11c5c50e4c4ef0b 24-Oct-2008 Sujith <Sujith.Manoharan@atheros.com> mac80211: Re-enable aggregation

Wireless HW without any dedicated queues for aggregation
do not need the ampdu_queues mechanism present right now
in mac80211. Since mac80211 is still incomplete wrt TX MQ
changes, do not allow aggregation sessions for drivers that
set ampdu_queues.

This is only an interim hack until Intel fixes the requeue issue.

Signed-off-by: Sujith <Sujith.Manoharan@atheros.com>
Signed-off-by: Luis Rodriguez <Luis.Rodriguez@Atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
0c68ae2605dbcf67414d8d1f19af93be44b355fb 27-Oct-2008 Johannes Berg <johannes@sipsolutions.net> mac80211: convert to %pM away from print_mac

Also remove a few stray DECLARE_MAC_BUF that were no longer
used at all.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
b4a4bf5d77c7d32098a7080f34a8857dd7fa466d 26-Sep-2008 Johannes Berg <johannes@sipsolutions.net> mac80211: fixups for "make master iface not wireless"

In "mac80211: make master iface not wireless" I accidentally
forgot to include these changes ... leading to the expected
BUG_ON errors.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
6067804047b64dde89f4f133fc7eba48ee44107d 21-Sep-2008 Arnaldo Carvalho de Melo <acme@redhat.com> net: Use hton[sl]() instead of __constant_hton[sl]() where applicable

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
17741cdc264e4d768167766a252210e201c1519a 11-Sep-2008 Johannes Berg <johannes@sipsolutions.net> mac80211: share STA information with driver

This patch changes mac80211 to share some more data about
stations with drivers. Should help iwlwifi and ath9k when
they get around to updating, and might also help with
implementing rate control algorithms without internals.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Cc: Sujith Manoharan <Sujith.Manoharan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2f58bbf27fe5321a7a208be9071efc54e8a8a3bd 19-Aug-2008 Daniel Wagner <wagi@monom.org> mac80211: Use only precedence level of DSCP field for frame classification

Bit 4-5 of DSCP should not be considered by classify_d1. The
802.11 QoS Priority field is only depending on the precedence level.

Signed-off-by: Daniel Wagner <wagi@monom.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
35ed4e75989c4e84a44b25569bbf09b98f923880 03-Aug-2008 David S. Miller <davem@davemloft.net> mac80211: Use queue_lock() in ieee80211_ht_agg_queue_remove().

qdisc_root_lock() is only %100 safe to use when the RTNL
semaphore is held.

Signed-off-by: David S. Miller <davem@davemloft.net>
d0f09804144fd9471a13cf4d80e66842c7fa114f 29-Jul-2008 Johannes Berg <johannes@sipsolutions.net> mac80211: partially fix skb->cb use

This patch fixes mac80211 to not use the skb->cb over the queue step
from virtual interfaces to the master. The patch also, for now,
disables aggregation because that would still require requeuing,
will fix that in a separate patch. There are two other places (software
requeue and powersaving stations) where requeue can happen, but that is
not currently used by any drivers/not possible to use respectively.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
5f86173bdf15981ca49d0434f638b68f70a35644 20-Jul-2008 Jussi Kivilinna <jussi.kivilinna@mbnet.fi> net_sched: Add qdisc_enqueue wrapper

Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Signed-off-by: David S. Miller <davem@davemloft.net>
83874000929ed63aef30b44083a9f713135ff040 17-Jul-2008 David S. Miller <davem@davemloft.net> pkt_sched: Kill netdev_queue lock.

We can simply use the qdisc->q.lock for all of the
qdisc tree synchronization.

Signed-off-by: David S. Miller <davem@davemloft.net>
51cb6db0f5654f08a4a6bfa3888dc36a51c2df3e 15-Jul-2008 David S. Miller <davem@davemloft.net> mac80211: Reimplement WME using ->select_queue().

The only behavior change is that we do not drop packets under any
circumstances. If that is absolutely needed, we could easily add it
back.

With cleanups and help from Johannes Berg.

Signed-off-by: David S. Miller <davem@davemloft.net>
e8a0464cc950972824e2e128028ae3db666ec1ed 17-Jul-2008 David S. Miller <davem@davemloft.net> netdev: Allocate multiple queues for TX.

alloc_netdev_mq() now allocates an array of netdev_queue
structures for TX, based upon the queue_count argument.

Furthermore, all accesses to the TX queues are now vectored
through the netdev_get_tx_queue() and netdev_for_each_tx_queue()
interfaces. This makes it easy to grep the tree for all
things that want to get to a TX queue of a net device.

Problem spots which are not really multiqueue aware yet, and
only work with one queue, can easily be spotted by grepping
for all netdev_get_tx_queue() calls that pass in a zero index.

Signed-off-by: David S. Miller <davem@davemloft.net>
b0e1e6462df3c5944010b3328a546d8fe5d932cd 09-Jul-2008 David S. Miller <davem@davemloft.net> netdev: Move rest of qdisc state into struct netdev_queue

Now qdisc, qdisc_sleeping, and qdisc_list also live there.

Signed-off-by: David S. Miller <davem@davemloft.net>
dc2b48475a0a36f8b3bbb2da60d3a006dc5c2c84 09-Jul-2008 David S. Miller <davem@davemloft.net> netdev: Move queue_lock into struct netdev_queue.

The lock is now an attribute of the device queue.

One thing to notice is that "suspicious" places
emerge which will need specific training about
multiple queue handling. They are so marked with
explicit "netdev->rx_queue" and "netdev->tx_queue"
references.

Signed-off-by: David S. Miller <davem@davemloft.net>
5ce2d488fe039ddd86a638496cf704df86c74eeb 09-Jul-2008 David S. Miller <davem@davemloft.net> pkt_sched: Remove 'dev' member of struct Qdisc.

It can be obtained via the netdev_queue. So create a helper routine,
qdisc_dev(), to make the transformations nicer looking.

Now, qdisc_alloc() now no longer needs a net_device pointer argument.

Signed-off-by: David S. Miller <davem@davemloft.net>
bb949fbd1878973c3539d9aecff52f284482a937 09-Jul-2008 David S. Miller <davem@davemloft.net> netdev: Create netdev_queue abstraction.

A netdev_queue is an entity managed by a qdisc.

Currently there is one RX and one TX queue, and a netdev_queue merely
contains a backpointer to the net_device.

The Qdisc struct is augmented with a netdev_queue pointer as well.

Eventually the 'dev' Qdisc member will go away and we will have the
resulting hierarchy:

net_device --> netdev_queue --> Qdisc

Also, qdisc_alloc() and qdisc_create_dflt() now take a netdev_queue
pointer argument.

Signed-off-by: David S. Miller <davem@davemloft.net>
238f74a227fd7de8ea1bc66dcbbd36cf9920d1cb 02-Jul-2008 Harvey Harrison <harvey.harrison@gmail.com> mac80211: move QOS control helpers into ieee80211.h

Also remove the WLAN_IS_QOS_DATA inline after removing the last
two users. This starts moving away from using rx->fc to using
the header frame_control directly.

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
d96a7bc0499d0332cecb0a1d7d7d0d44f9c8cc28 01-Jul-2008 Tomas Winkler <tomas.winkler@intel.com> mac80211: remove useless tid assignment for management and control frames

This patch removes useless tid assignment for management and control frames

Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Acked-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
f4ea83dd743d3e1bec8fdf954ac911c6b12ae87a 30-Jun-2008 Johannes Berg <johannes@sipsolutions.net> mac80211: rework debug settings and make debugging safer

This patch reworks the mac80211 debug settings making them more focused
and adding help text for those that didn't have one. It also removes a
number of printks that can be triggered remotely and add no value, e.g.
"too short deauthentication frame received - ignoring".

If somebody really needs to debug that they should just add a monitor
interface and look at the frames in wireshark.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
ff31ab56c0e900235f653e375fc3b01ba2d8d6a3 02-Jul-2008 Patrick McHardy <kaber@trash.net> net-sched: change tcf_destroy_chain() to clear start of filter list

Pass double tcf_proto pointers to tcf_destroy_chain() to make it
clear the start of the filter list for more consistency.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
002aaf4ea6be3247c246d274979359c3bc93c82a 11-Jun-2008 Harvey Harrison <harvey.harrison@gmail.com> mac80211: wme.c use new helpers

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
995ad6c5a415c9389d094d246ca1b305c1e31813 12-Jun-2008 Tomas Winkler <tomas.winkler@intel.com> mac80211: add missing new line in debug print HT_DEBUG

This patch adds '\n' in debug printk (wme.c HT DEBUG)

Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
e2530083609148a7835b54c431f6b8956407c1f6 17-May-2008 Johannes Berg <johannes@sipsolutions.net> mac80211: use multi-queue master netdevice

This patch updates mac80211 and drivers to be multi-queue aware and
use that instead of the internal queue mapping. Also does a number
of cleanups in various pieces of the code that fall out and reduces
internal mac80211 state size.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
e039fa4a4195ac4ee895e6f3d1334beed63256fe 15-May-2008 Johannes Berg <johannes@sipsolutions.net> mac80211: move TX info into skb->cb

This patch converts mac80211 and all drivers to have transmit
information and status in skb->cb rather than allocating extra
memory for it and copying all the data around. To make it fit,
a union is used where only data that is necessary for all steps
is kept outside of the union.

A number of fixes were done by Ivo, as well as the rt2x00 part
of this patch.

Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
a4278e18e7e497b76781492d010035c3c36f7403 12-May-2008 Pavel Roskin <proski@gnu.org> mac80211: add missing newlines in printk()

Signed-off-by: Pavel Roskin <proski@gnu.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
5c5e12898af0978a780991950be12d0d73c02f04 03-May-2008 Johannes Berg <johannes@sipsolutions.net> mac80211: fix wme code

In commit e100bb64bf7cdeae7f742a65ee1985649a7fd1b4 (mac80211:
QoS related cleanups) I accidentally changed a variable from
int to u16 causing a warning that a comparison for < 0 was always
false. John thought this was a missing deletion of code and removed
the warning by deleting the never executed branch of code in commit
3df5ee60f1ee559b1417397461891f8b483e8089 (wireless: fix warning
introduced by "mac80211: QoS related cleanups") but the problem really
was my mistake of using a u16 variable for the queue variable when
that variable can also contain an error code. This patch restores
the original code and variable type.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
3df5ee60f1ee559b1417397461891f8b483e8089 01-May-2008 John W. Linville <linville@tuxdriver.com> wireless: fix warning introduced by "mac80211: QoS related cleanups"

net/mac80211/wme.c: In function ‘wme_qdiscop_enqueue’:
net/mac80211/wme.c:219: warning: comparison is always false due to limited range of data type

drivers/net/wireless/p54/p54common.c: In function ‘p54_conf_tx’:
drivers/net/wireless/p54/p54common.c:947: warning: comparison is always false due to limited range of data type

Signed-off-by: John W. Linville <linville@tuxdriver.com>
e100bb64bf7cdeae7f742a65ee1985649a7fd1b4 30-Apr-2008 Johannes Berg <johannes@sipsolutions.net> mac80211: QoS related cleanups

This
* makes the queue number passed to drivers a u16
(as it will be with skb_get_queue_mapping)
* removes the useless queue number defines
* splits hw->queues into hw->queues/ampdu_queues
* removes the debugfs files for per-queue counters
* removes some dead QoS code
* removes the beacon queue configuration for IBSS
so that the drivers now never get a queue number
bigger than (hw->queues + hw->ampdu_queues - 1)
for tx and only in the range 0..hw->queues-1 for
conf_tx.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
0da926f05748d273e7b2b673b0de21629ae9acdd 23-Apr-2008 Ron Rindjunsky <ron.rindjunsky@intel.com> mac80211: fix use before check of Qdisc length

This patch fixes use of Qdisc length in requeue function, before we checked
the reference is valid. (Adrian Bunk's catch)

Signed-off-by: Ron Rindjunsky <ron.rindjunsky@intel.com>
Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
d0709a65181beb787ef3f58cfe45536a2bb254c8 25-Feb-2008 Johannes Berg <johannes@sipsolutions.net> mac80211: RCU-ify STA info structure access

This makes access to the STA hash table/list use RCU to protect
against freeing of items. However, it's not a true RCU, the
copy step is missing: whenever somebody changes a STA item it
is simply updated. This is an existing race condition that is
now somewhat understandable.

This patch also fixes the race key freeing vs. STA destruction
by making sure that sta_info_destroy() is always called under
RTNL and frees the key.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
a9af2013ca791b40e38a33f94724b87826f17460 29-Jan-2008 Ron Rindjunsky <ron.rindjunsky@intel.com> mac80211: adjustable number of bits for qdisc pool

This fix allows to control the number of bits that qdiscs book keeping
can be done for with respect to the qdisc pool

Signed-off-by: Ron Rindjunsky <ron.rindjunsky@intel.com>
Acked-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
9e7234923789897858e1a475c579b5e2e6ad5b74 28-Jan-2008 Ron Rindjunsky <ron.rindjunsky@intel.com> mac80211: A-MPDU Tx adding qdisc support

This patch allows qdisc support in A-MPDU Tx. a method to
handle QoS <-> TID switches is present in this patch.

Signed-off-by: Ron Rindjunsky <ron.rindjunsky@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
1e90474c377e92db7262a8968a45c1dd980ca9e5 23-Jan-2008 Patrick McHardy <kaber@trash.net> [NET_SCHED]: Convert packet schedulers from rtnetlink to new netlink API

Convert packet schedulers to use the netlink API. Unfortunately a gradual
conversion is not possible without breaking compilation in the middle or
adding lots of casts, so this patch converts them all in one step. The
patch has been mostly generated automatically with some minor edits to
at least allow seperate conversion of classifiers and actions.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
a8bdf29c6cd117644d27677962fe832b33036c77 09-Jan-2008 Guy Cohen <guy.cohen@intel.com> mac80211: Assign correct TID for local bridged packets

This patch assigns correct TID to frames transmitted between
two stations in the same BSS in AP mode.
The problem is that skb->protocol is not set to ETH_P_IP and it is wrong
to use that field at this stage.
The fix compares the LLC/Protocol headers explicitly to check if the
encapsulated frame is IP frame

Signed-off-by: Guy Cohen <guy.cohen@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
f831e90971dc942a9f2fcc918a5739eb6d4ef4c5 11-Dec-2007 YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> [MAC80211]: Use htons() where appropriate.

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
20fea08b5fb639c4c175b5c74a2bb346c5c5bc2e 14-Nov-2007 Eric Dumazet <dada1@cosmosbay.com> [NET]: Move Qdisc_class_ops and Qdisc_ops in appropriate sections.

Qdisc_class_ops are const, and Qdisc_ops are mostly read.

Using "const" and "__read_mostly" qualifiers helps to reduce false
sharing.

Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
f9d540ee5f7e480339911df8d7389ef4c435ab54 28-Sep-2007 Johannes Berg <johannes@sipsolutions.net> [MAC80211]: remove management interface

Removes the management interface since it is only required
for hostapd/userspace MLME, will not be in the final tree
at least in this form and hostapd/userspace MLME currently
do not work against this tree anyway.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3c3b00caf98e5fdaa0184026a68f0008a5bf393e 28-Aug-2007 Johannes Berg <johannes@sipsolutions.net> [MAC80211]: clean up whitespace

This cleans up some whitespace to make the mac80211
version in mainline diverge less from wireless-dev.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Acked-by: Michael Wu <flamingice@sourmilk.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
e8bf96495cd67090b4900ddaf8e8672a17ec39fa 28-Aug-2007 Jiri Slaby <jirislaby@gmail.com> [MAC80211]: Remove bitfields from struct ieee80211_tx_packet_data

remove bitfields from struct ieee80211_tx_packet_data

[Johannes: completely clear flags in ieee80211_remove_tx_extra]

Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Acked-by: Michael Wu <flamingice@sourmilk.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6e0d114d52833449a4e40f6dc8582e88d0742be4 27-Jul-2007 Johannes Berg <johannes@sipsolutions.net> [MAC80211]: move QoS rx handlers into rx.c

This patch moves the QoS handlers into rx.c making it possible
to compile wme.c only when NET_SCHED is defined.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Jiri Benc <jbenc@suse.cz>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
136e83d6b8999f4ef680ff9cf2a67e1e1ccbd94e 10-Sep-2007 Johannes Berg <johannes@sipsolutions.net> [PATCH] net/mac80211/wme.c: fix sparse warning

wme.c triggers a sparse warning; it wasn't noticed before because until
recently ARRAY_SIZE triggered a sparse error.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
f0706e828e96d0fa4e80c0d25aa98523f6d589a0 05-May-2007 Jiri Benc <jbenc@suse.cz> [MAC80211]: Add mac80211 wireless stack.

Add mac80211, the IEEE 802.11 software MAC layer.

Signed-off-by: Jiri Benc <jbenc@suse.cz>
Signed-off-by: John W. Linville <linville@tuxdriver.com>