History log of /drivers/net/wireless/rt2x00/rt2x00queue.h
Revision Date Author Comments (<<< Hide modified files) (Show modified files >>>)
ead2bb64a38c471ad0a769f61921f330f062dd50 08-Sep-2011 Helmut Schaa <helmut.schaa@googlemail.com> rt2x00: Add WCID to HT TX descriptor

When sending an unencrypted frame to a STA the driver might want to pass
a suitable WCID since we don't have a key index to allow tx status
reports to get properly assigned to the correct STA.

Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com>
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
/drivers/net/wireless/rt2x00/rt2x00queue.h
5dada06cf156b1b70dcb76de5a63349aa33b135c 07-Sep-2011 Helmut Schaa <helmut.schaa@googlemail.com> rt2x00: Update some TX descriptor

Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com>
Acked-by: Gertjan van Wingerde <gwingerde@gmail.com>
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
/drivers/net/wireless/rt2x00/rt2x00queue.h
77a861c405da75d81e9e6e32c50eb7f9777777e8 06-Jul-2011 Gertjan van Wingerde <gwingerde@gmail.com> rt2x00: Serialize TX operations on a queue.

The rt2x00 driver gets frequent occurrences of the following error message
when operating under load:
phy0 -> rt2x00queue_write_tx_frame: Error - Arrived at non-free entry in the
non-full queue 2.

This is caused by simultaneous attempts from mac80211 to send a frame via
rt2x00, which are not properly serialized inside rt2x00queue_write_tx_frame,
causing the second frame to fail sending with the above mentioned error
message.

Fix this by introducing a per-queue spinlock to serialize the TX operations
on that queue.

Reported-by: Andreas Hartmann <andihartmann@01019freenet.de>
Signed-off-by: Gertjan van Wingerde <gwingerde@gmail.com>
Acked-by: Helmut Schaa <helmut.schaa@googlemail.com>
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
/drivers/net/wireless/rt2x00/rt2x00queue.h
1d616b14cf3266684af46db614b7de03c7a8a538 24-Jun-2011 Joe Perches <joe@perches.com> rt2x00: Fix unspeficied typo

Signed-off-by: Joe Perches <joe@perches.com>
Acked-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
/drivers/net/wireless/rt2x00/rt2x00queue.h
cfef6047c4027a8448ec8dafeaf2bb362cc882e4 25-Apr-2011 John W. Linville <linville@tuxdriver.com> Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6 into for-davem

Conflicts:
drivers/net/wireless/iwlwifi/iwl-core.c
drivers/net/wireless/rt2x00/rt2x00queue.c
drivers/net/wireless/rt2x00/rt2x00queue.h
75256f0348d38f414b7ac50ac78d4a4532bb6762 18-Apr-2011 Johannes Stezenbach <js@sig21.net> rt2x00: fix queue timeout checks

Add a timestamp to each queue entry which is updated whenever
the status of the entry changes, and remove the per-queue
timestamps. The previous check was incorrect and caused both
false positives and false negatives.

With the corrected check it comes apparent that the TX status
usually times out on rt2800usb unless there is sufficient traffic
(i.e. the next TX will complete the previous TX status).

Signed-off-by: Johannes Stezenbach <js@sig21.net>
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
/drivers/net/wireless/rt2x00/rt2x00queue.h
10e11568ca8b8a15f7478f6a4ceebabcbdba1018 18-Apr-2011 Helmut Schaa <helmut.schaa@googlemail.com> rt2x00: Make rt2x00_queue_entry_for_each more flexible

Allow passing a void pointer to rt2x00_queue_entry_for_each which in
turn in provided to the callback function.

Furthermore, allow the callback function to stop processing by returning
true. And also notify the caller of rt2x00_queue_entry_for_each if the
loop was canceled by the callback.

No functional changes, just preparation for an upcoming patch.

Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com>
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Acked-by: Gertjan van Wingerde <gwingerde@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
/drivers/net/wireless/rt2x00/rt2x00queue.h
252f4bf400df1712408fe83ba199a66a1b57ab1d 12-Apr-2011 John W. Linville <linville@tuxdriver.com> Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6 into for-davem

Conflicts:
drivers/net/wireless/ath/ar9170/main.c
drivers/net/wireless/ath/ar9170/phy.c
drivers/net/wireless/zd1211rw/zd_rf_rf2959.c
f16d2db704b873d34cec54f992637f3579e10e08 28-Mar-2011 Helmut Schaa <helmut.schaa@googlemail.com> rt2x00: Fix tx aggregation problems with some clients

Some clients seem to rely upon the reception of BlockAckReqs to flush
their rx reorder buffer. In order to fix aggregation for these clients
rt2x00 should send a BlockAckReq if the transmission of an AMPDU
subframe fails.

Introduce a new flag TXDONE_AMPDU to indicate that this is an AMPDU
subframe and pass IEEE80211_TX_STAT_AMPDU_NO_BACK to mac80211 if an
AMPDU subframe failed during transmission.

This fixes aggregation problems with Intel 5100 Windows STAs (and maybe
others as well).

Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com>
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
/drivers/net/wireless/rt2x00/rt2x00queue.h
25985edcedea6396277003854657b5f3cb31a628 31-Mar-2011 Lucas De Marchi <lucas.demarchi@profusion.mobi> Fix common misspellings

Fixes generated by 'codespell' and manually reviewed.

Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
/drivers/net/wireless/rt2x00/rt2x00queue.h
4df10c8c1353e5db781a9a781cc585698b24f30d 03-Mar-2011 Helmut Schaa <helmut.schaa@googlemail.com> rt2x00: Use an enum instead of u16 for the rate_mode TX descriptor field

This makes the code less error-prone.

Acked-by: Gertjan van Wingerde <gwingerde@gmail.com>
Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com>
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
/drivers/net/wireless/rt2x00/rt2x00queue.h
2517794b702cf62bb049e57c0825fc4573f8a6a3 03-Mar-2011 Helmut Schaa <helmut.schaa@googlemail.com> rt2x00: Move TX descriptor field "ifs" into plcp substruct

"ifs" is only used by no-HT devices. Move it into the plcp substruct and
fill in the value only for no-HT devices.

Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com>
Acked-by: Gertjan van Wingerde <gwingerde@gmail.com>
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
/drivers/net/wireless/rt2x00/rt2x00queue.h
fe107a5234de1f1576df466b2ea8d01868f6ee77 03-Mar-2011 Ivo van Doorn <ivdoorn@gmail.com> rt2x00: Optimize TX descriptor memory layout

Some fields only need to be u8 and for ifs and txop we can use the
already available enums.

Acked-by: Gertjan van Wingerde <gwingerde@gmail.com>
Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com>
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
/drivers/net/wireless/rt2x00/rt2x00queue.h
26a1d07f4176099a7b6f45009dad054e6ad5b7e4 03-Mar-2011 Helmut Schaa <helmut.schaa@googlemail.com> rt2x00: Optimize TX descriptor handling

HT and no-HT rt2x00 devices use a partly different TX descriptor.
Optimize the tx desciptor memory layout by putting the PLCP and HT
substructs into a union and introduce a new driver flag to decide which
TX desciptor format is used by the device.

This saves us the expensive PLCP calculation fOr HT devices and the HT
descriptor setup on no-HT devices.

Acked-by: Gertjan van Wingerde <gwingerde@gmail.com>
Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com>
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
/drivers/net/wireless/rt2x00/rt2x00queue.h
f615e9a38a8e6239d35891a05f2ac1159088780a 13-Dec-2010 Ivo van Doorn <ivdoorn@gmail.com> rt2x00: Fix WMM Queue naming

The Queue names were incorrectly copied from the legacy drivers,
as a result the queue names were inversed to what was expected.

This renames the queues using this mapping:
QID_AC_BK -> QID_AC_VO (priority 0)
QID_AC_BE -> QID_AC_VI (priority 1)
QID_AC_VI -> QID_AC_BE (priority 2)
QID_AC_VO -> QID_AC_BK (priority 3)

Note that this was a naming problem only, which didn't affect
the assignment of frames to their respective queues.

Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
/drivers/net/wireless/rt2x00/rt2x00queue.h
dba5dc1ae9764902f46d5225c9ff40e4f7b614c7 13-Dec-2010 Ivo van Doorn <ivdoorn@gmail.com> rt2x00: Introduce extra queue entry sanity flag

Add a queue entry flag ENTRY_DATA_STATUS_PENDING,
which can be used to indicate a queue entry has
returned from the hardware and is waiting for
status processing. Using this flag we can add
some extra sanity checks to prevent queue corruption.

Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Acked-by: Helmut Schaa <helmut.schaa@googlemail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
/drivers/net/wireless/rt2x00/rt2x00queue.h
0b7fde54f94979edc67bbf86b5adba702ebfefe8 13-Dec-2010 Ivo van Doorn <ivdoorn@gmail.com> rt2x00: Protect queue control with mutex

Add wrapper functions in rt2x00queue.c to
start & stop queues. This control must be protected
using a mutex.

Queues can also be paused which will halt the flow
of packets between the driver and mac80211. This doesn't
require a mutex protection.

Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
/drivers/net/wireless/rt2x00/rt2x00queue.h
813f0339dd739c48607f12dac79ec26c61874226 06-Nov-2010 Ivo van Doorn <IvDoorn@gmail.com> rt2x00: Rename queue->lock to queue->index_lock

The queue->lock is only used to protect the index
numbers. Rename the lock accordingly.

Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Acked-by: Gertjan van Wingerde <gwingerde@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
/drivers/net/wireless/rt2x00/rt2x00queue.h
7225ce1ea93d24c0914eea0410dcfc426281f996 04-Nov-2010 Ivo van Doorn <ivdoorn@gmail.com> rt2x00: Rename rt2x00queue_timeout

Rename rt2x00queue_timeout to rt2x00queue_status_timeout to
better describe what is actually timing out (note that
we already have a rt2x00queue_dma_timeout).

Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Acked-by: Helmut Schaa <helmut.schaa@googlemail.com>
Acked-by: Gertjan van Wingerde <gwingerde@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
/drivers/net/wireless/rt2x00/rt2x00queue.h
2b23cdaa3b0e9567597563e5a7a5103ecda447f0 04-Nov-2010 Helmut Schaa <helmut.schaa@googlemail.com> rt2x00: Reduce tx descriptor size

The tx descriptor values qid, cw_min, cw_max and aifs are directly
accessible through the tx entry struct. So there's no need to copy
them into the tx descriptor and passing them to the indiviual drivers.
Instead we can just get the correct value from the tx entry.

Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com>
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
/drivers/net/wireless/rt2x00/rt2x00queue.h
efd2f271e44c7ea011cdb0363d38f40338ab80d2 04-Nov-2010 Helmut Schaa <helmut.schaa@googlemail.com> rt2x00: Sync Tx and RX ring sizes with legacy drivers

All rt2x00 devices used the same Tx and Rx ring size (24 entries) till
now. Newer devices (like rt2800) can however make use of a larger TX and
RX ring due to 11n capabilities (AMPDUs of size 64 for example).

Hence, bring rt2x00 in sync with the legacy drivers and use the same TX
and RX ring sizes. Also remove the global defines RX_ENTRIES, TX_ENTRIES,
BEACON_ENTRIES and ATIM_ENTRIES and use per driver values.

That is 24 entries for rt2400pci, 32 entries for rt2500pci, rt2500usb,
rt61pci and rt73usb and 128 (RX) and 64 (TX) for rt2800pci and rt2800usb.

Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com>
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
/drivers/net/wireless/rt2x00/rt2x00queue.h
652a9dd2a0c07251e328519cc23f1316ab13ed51 30-Aug-2010 Ivo van Doorn <ivdoorn@gmail.com> rt2x00: Split watchdog check into a DMA and STATUS timeout

The watchdog for rt2800usb triggers frequently causing all URB's
to be canceled often enough to interrupt the normal TX flow.
More research indicated that not the URB upload to the USB host
were hanging, but instead the TX status reports.

To correctly detect what is going on, we introduce Q_INDEX_DMA_DONE
which is an index counter between Q_INDEX_DONE and Q_INDEX and indicates
if the frame has been transfered to the device.

This also requires the rt2x00queue timeout functions to be updated
to differentiate between a DMA timeout (time between Q_INDEX and
Q_INDEX_DMA_DONE timeout) and a STATUS timeout (time between
Q_INDEX_DMA_DONE and Q_INDEX_DONE timeout)

All Q_INDEX_DMA_DONE code was taken from the RFC from
Helmut Schaa <helmut.schaa@googlemail.com> for the implementation
for watchdog for rt2800pci.

Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Acked-by: Gertjan van Wingerde <gwingerde@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
/drivers/net/wireless/rt2x00/rt2x00queue.h
a908a743822d2eed2d8394bb607bb9db5934dcfc 30-Aug-2010 Helmut Schaa <helmut.schaa@googlemail.com> rt2x00: Rename txentry_desc.queue -> txentry_desc.qid

Variables containing queue ids are called qid everywhere else, hence
rename the queue field in txentry_desc to qid as well.

Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com>
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
/drivers/net/wireless/rt2x00/rt2x00queue.h
54e34fbb6fae67b3dba4c2600d3c65aca81635ae 23-Aug-2010 Ivo van Doorn <ivdoorn@gmail.com> rt2x00: Remove Q_INDEX_CRYPTO and ENTRY_OWNER_DEVICE_CRYPTO

Q_INDEX_CRYPTO and ENTRY_OWNER_DEVICE_CRYPTO where initially
added with the plan to implement hardware encryption for rt2500pci.
However there are no plans to do so anymore as the crypto
mechanism in rt2500pci is very different then any other Ralink
device.

So we can now safely remove the definitions, and don't think
about this feature anymore. :)

Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Acked-by: Helmut Schaa <helmut.schaa@googlemail.com>
Acked-by: Gertjan van Wingerde <gwingerde@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
/drivers/net/wireless/rt2x00/rt2x00queue.h
5eb7efe8a4807d98a277280e1317e5094eedfb6b 23-Aug-2010 Ivo van Doorn <ivdoorn@gmail.com> rt2x00: Move direct access to queue->entries to rt2x00queue.c

All access to queue->entries through the Q_INDEX/Q_INDEX_DONE
variables must be done using spinlock protection. It is best
to manage this completely from rt2x00queue.c.

For safely looping through all entries in the queue, the function
rt2x00queue_for_each_entry is added which will walk from from a index
range in a safe manner.

This also fixes rt2x00usb which walked the entries list from
0 to length to kill each entry (killing entries must be done
from Q_INDEX_DONE to Q_INDEX to enforce TX status reporting to
occur in the correct order.

Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Acked-by: Gertjan van Wingerde <gwingerde@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
/drivers/net/wireless/rt2x00/rt2x00queue.h
84804cdca043e2315bf5eae60807ac105929073f 06-Aug-2010 Ivo van Doorn <ivdoorn@gmail.com> rt2x00: Set MIMO PS flag in tx descriptor for STAs in dynamic SMPS mode

Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com>
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
/drivers/net/wireless/rt2x00/rt2x00queue.h
7e613e1666d59b5364f7918b3427bf328ac5f9ca 06-Aug-2010 Ivo van Doorn <ivdoorn@gmail.com> rt2x00: Move USB tx/rx done handling to workqueue

Move all TX and RX completion handling into a work structure,
which is handeled on the mac80211 workqueue. This simplifies
the code in rt2x00lib since it no longer needs to check if the
device is USB or PCI to decide which mac80211 function should be used.

In the watchdog some changes are needed since it can no longer rely
on the TX completion function to be run while looping through the
entries. (Both functions now work on the same workqueue, so this
would deadlock). So the watchdog now waits for the URB to return,
and handle the TX status report directly.

As a side-effect, the debugfs entry for the RX queue now correctly
displays the positions of the INDEX and INDEX_DONE counters. This
also implies that it is not possible to perform checks like queue_empty()
and queue_full() on the RX queue.

Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
/drivers/net/wireless/rt2x00/rt2x00queue.h
c965c74bbc650e5466d2f3e32bd28112ebcdd00c 11-Jul-2010 Ivo van Doorn <ivdoorn@gmail.com> rt2x00: Implement watchdog monitoring

Implement watchdog monitoring for USB devices (PCI support can
be added later). This will determine if URBs being uploaded to
the hardware are actually returning. Both rt2500usb and rt2800usb
have shown that URBs being uploaded can remain hanging without
being released by the hardware.
By using this watchdog, a queue can be reset when this occurs.
For rt2800usb it has been tested that the connection is preserved
even though this interruption.

Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
/drivers/net/wireless/rt2x00/rt2x00queue.h
46678b197a4a61f9c3701fb346b93acbf2ea9c61 14-Jun-2010 Helmut Schaa <helmut.schaa@googlemail.com> rt2x00: clarify meaning of txdone flags

Update the documentation of the available txdone flags to better express
how they should be used.

Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com>
Acked-by: Gertjan van Wingerde <gwingerde@gmail.com>
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
/drivers/net/wireless/rt2x00/rt2x00queue.h
fd76f148ebc67d662f71f00128c8ddb0538168c0 11-May-2010 Gertjan van Wingerde <gwingerde@gmail.com> rt2x00: In debugfs frame dumping allow the TX descriptor to be part of the skb.

Preparation for futher cleanups in the area of properly maintaining the skb
data without fiddling with the skb->data pointer.

Signed-off-by: Gertjan van Wingerde <gwingerde@gmail.com>
Acked-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
/drivers/net/wireless/rt2x00/rt2x00queue.h
1affa091975e47d50ce6a88e9b1abfe717c2fe27 07-May-2010 Helmut Schaa <helmut.schaa@googlemail.com> rt2x00: rt2800: use correct txop value in tx descriptor

rt2800 devices use a different enumeration to specify what IFS values should
be used on frame transmission compared to the other rt2x00 devices. Hence,
create a new enum called txop that contains the valid values.

Furthermore use the appropriate txop values as found in the ralink drivers:
- TXOP_BACKOFF for management frames
- TXOP_SIFS for subsequent fragments in a burst
- TXOP_HTTXOP for all data frames

Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com>
Acked-by: Ivo van Doorn <IvDoorn@gmail.com>
Acked-by: Gertjan van Wingerde <gwingerde@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
/drivers/net/wireless/rt2x00/rt2x00queue.h
df624ca5413d84b3082246de384823fbe8fed6e4 03-May-2010 Gertjan van Wingerde <gwingerde@gmail.com> rt2x00: Register frame length in TX entry descriptor instead of L2PAD.

And use it consistently in the chipset drivers.
Preparation for further clean ups.

Signed-off-by: Gertjan van Wingerde <gwingerde@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
/drivers/net/wireless/rt2x00/rt2x00queue.h
91639c76bfd9d27ac54a3c521a2559d02f409ebe 28-Apr-2010 John W. Linville <linville@tuxdriver.com> rt2x00: remove now unused noise field from struct rxdone_entry_desc

Signed-off-by: John W. Linville <linville@tuxdriver.com>
Acked-by: Gertjan van Wingerde <gwingerde@gmail.com>
/drivers/net/wireless/rt2x00/rt2x00queue.h
354e39dbb19f29ef28a9c2db9e55ff2a7435b35a 04-Dec-2009 Gertjan van Wingerde <gwingerde@gmail.com> rt2x00: Remove SKBDESC_L2_PADDED flag.

With the improved L2 padding code, this flag is no longer necessary, as the
rt2x00queue_remove_l2pad is capable of detecting by itself if L2 padding is
applied.
For received frames the RX descriptor flag is still being checked.

Signed-off-by: Gertjan van Wingerde <gwingerde@gmail.com>
Acked-by: Ivo van Doorn <ivdoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
/drivers/net/wireless/rt2x00/rt2x00queue.h
7351c6bd482712e5e3ec9dffc547de0e0863efb0 19-Nov-2009 Johannes Berg <johannes@sipsolutions.net> mac80211: request TX status where needed

Right now all frames mac80211 hands to the driver
have the IEEE80211_TX_CTL_REQ_TX_STATUS flag set to
request TX status. This isn't really necessary, only
the injected frames need TX status (the latter for
hostapd) so move setting this flag.

The rate control algorithms also need TX status, but
they don't require it.

Also, rt2x00 uses that bit for its own purposes and
seems to require it being set for all frames, but
that can be fixed in rt2x00.

This doesn't really change anything for any drivers
but in the future drivers using hw-rate control may
opt to not report TX status for frames that don't
have the IEEE80211_TX_CTL_REQ_TX_STATUS flag set.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Acked-by: Ivo van Doorn <IvDoorn@gmail.com> [rt2x00 bits]
Signed-off-by: John W. Linville <linville@tuxdriver.com>
/drivers/net/wireless/rt2x00/rt2x00queue.h
9c9a0d145fee73b5e821bb460732ac2a66c680b3 08-Nov-2009 Gertjan van Wingerde <gwingerde@gmail.com> rt2x00: Update copyright statements.

As mentioned on the linux-wireless mailing list, the current copyright
statements in the rt2x00 are meaningless, as the rt2x00 project is
not even a formal legal entity. Therefore it is better to replace
the existing copyright statements with copyright statements for the
people that actually wrote the code.

Note: Updated to the best of my knowledge with respect to who
contributed considerable amounts of code.

Signed-off-by: Gertjan van Wingerde <gwingerde@gmail.com>
Acked-by: Ivo van Doorn <IvDoorn@gmail.com>
CC: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
/drivers/net/wireless/rt2x00/rt2x00queue.h
92ed48e5230e8f5906dda0cc31715b3b7e3fe303 17-Aug-2009 Benoit PAPILLAULT <benoit.papillault@free.fr> rt2x00: Add support for retry rates

rt2800pci can handle different retry rates,
it will always step 1 rate down after a failed
transmission so creating the retry rate list
for mac80211 is quite simple.

Signed-off-by: Benoit PAPILLAULT <benoit.papillault@free.fr>
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
/drivers/net/wireless/rt2x00/rt2x00queue.h
4951348109c334f2b839816bd161522d089cb782 17-Jul-2009 Luis Correia <luis.f.correia@gmail.com> rt2x00: Comment spellchecking

Fix a bunch of spelling errors in the rt2x00 drivers

Signed-off-by: Luis Correia <luis.f.correia@gmail.com>
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
/drivers/net/wireless/rt2x00/rt2x00queue.h
35f00cfcc06bb85e0659f9847400518008d78145 26-Apr-2009 Ivo van Doorn <ivdoorn@gmail.com> rt2x00: Implement support for 802.11n

Extend rt2x00lib capabilities to support 802.11n,
it still lacks aggregation support, but that can
be added in the future.

Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
/drivers/net/wireless/rt2x00/rt2x00queue.h
9f1661718c7fcf82e25c6aed20b729ee372d9d65 26-Apr-2009 Ivo van Doorn <ivdoorn@gmail.com> rt2x00: Add support for L2 padding during TX/RX

Some hardware require L2 padding between header and payload
because both must be aligned to a 4-byte boundary. This hardware
also is easier during the RX path since we no longer need to
move the entire payload but rather only the header to remove
the padding (mac80211 only wants the payload to be 4-byte aligned).

Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
/drivers/net/wireless/rt2x00/rt2x00queue.h
9eb4e21e289beba9cfe34f24920eee83c144e62f 26-Apr-2009 Ivo van Doorn <ivdoorn@gmail.com> rt2x00: Move iv_len into tx descriptor data

By placing the iv_len into the tx descriptor data and
by passing this data to the crypto IV handlers we can
save multiple calls to ieee80211_get_hdrlen_from_skb()
and some if-statements when copying/removing the IV data
from the outgoing frame.

Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
/drivers/net/wireless/rt2x00/rt2x00queue.h
4e54c711b42c3cc8da8a3fdcde3407b86d67ebcc 17-Jan-2009 Ivo van Doorn <ivdoorn@gmail.com> rt2x00: Update copyright year to 2009

Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
/drivers/net/wireless/rt2x00/rt2x00queue.h
b30dd5c043eda4b3d23659ef550c16ce4f6ecb47 20-Dec-2008 Ivo van Doorn <ivdoorn@gmail.com> rt2x00: Introduce RXDONE_SIGNAL_MASK mask

Improve error message reporting when a frame was received
with unknown rate. Instead of using the boolean check if
the frame is supposed to be a PLCP value or not, we should
add a new mask (RXDONE_SIGNAL_MASK) which returns the type
identification for a signal value (i.e. PLCP). At the moment
we only have 2 different types, but more will arrive when
support for 11n is added.

Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
/drivers/net/wireless/rt2x00/rt2x00queue.h
2bdb35c7ffb61f4b9d963dd447a2c54add5f02c5 20-Dec-2008 Ivo van Doorn <ivdoorn@gmail.com> rt2x00: Allow drivers to pass the noise value during rxdone

Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
/drivers/net/wireless/rt2x00/rt2x00queue.h
076f9582a6b82e54339ee815130315744b730787 20-Dec-2008 Ivo van Doorn <ivdoorn@gmail.com> rt2x00: Remove ENTRY_TXD_OFDM_RATE

The flag ENTRY_TXD_OFDM_RATE isn't flexible enough
to indicate which rate modulation should be used for
a frame. This will become a problem when 11n support
is added.

Remove the flag and replace it with an enum value which
can better indicate the exact rate modulation.

Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
/drivers/net/wireless/rt2x00/rt2x00queue.h
74415edb042ef9f3b1291f978763687f35aadbb3 02-Dec-2008 Ivo van Doorn <ivdoorn@gmail.com> rt2x00: Add RXDONE_CRYPTO_IV/ICV flags

Drivers should notify rt2x00lib when they provide
the IV/ICV data. This adds some flexibility to drivers
which can't provide all information.
* rt2500usb provides ICV inside the frame
* rt2800pci doesn't provide IV/ICV
* rt2800usb doesn't provide IV/ICV

Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
/drivers/net/wireless/rt2x00/rt2x00queue.h
1ce9cdac482f0dfbbd22ba4b3e5c016a05543a42 02-Dec-2008 Ivo van Doorn <ivdoorn@gmail.com> rt2x00: Optimize IV/EIV handling

IV and EIV belong to eachother and don't require
2 seperate fields. Instead they can logically be
merged into a single array with size 2.

With this approach we can simplify the code in
rt2x00crypto.c by using a single memcpy() when
copying the iv/eiv data. Additionally we can
move some code out of if-statements because the
if-statement would always be true.

Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
/drivers/net/wireless/rt2x00/rt2x00queue.h
f1ca2167d89d991eed519c789d3902f9682c06b8 13-Nov-2008 Ivo van Doorn <ivdoorn@gmail.com> rt2x00: Detect USB BULK in/out endpoints

Instead of hardcoding the used in/out endpoints
we should detect them by walking through all
available endpoints.

rt2800usb will gain the most out of this, because
the legacy drivers indicate that there are multiple
endpoints available.
However this code might benefit at least rt73usb as
well for the MIMO queues, and if we are really lucky
rt2500usb will benefit because for the TX and PRIO
queues.

Even if rt2500usb and rt73usb do not get better performance
after this patch, the endpoint detection still belongs to
rt2x00usb, and it shouldn't hurt to always try to detect
the available endpoints.

Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
/drivers/net/wireless/rt2x00/rt2x00queue.h
e6a9854b05c1a6af1308fe2b8c68f35abf28a3ee 21-Oct-2008 Johannes Berg <johannes@sipsolutions.net> mac80211/drivers: rewrite the rate control API

So after the previous changes we were still unhappy with how
convoluted the API is and decided to make things simpler for
everybody. This completely changes the rate control API, now
taking into account 802.11n with MCS rates and more control,
most drivers don't support that though.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
/drivers/net/wireless/rt2x00/rt2x00queue.h
6c6aa3c004e702532cb0f549a96eb2f75636bd3b 29-Aug-2008 Ivo van Doorn <ivdoorn@gmail.com> rt2x00: Add Signal type flag

Instead of using the PLCP flag to indicate if the
signal value is plcp or the bitrate we should add
a new flag to mark the bitrate type explicitely.
This is usefull when new types are added later for
rt2800.

Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
/drivers/net/wireless/rt2x00/rt2x00queue.h
2af0a570b45ec315f364ea2c8a6d072cfcaa9d32 29-Aug-2008 Ivo van Doorn <ivdoorn@gmail.com> rt2x00: Initialize txop during conf_tx() callback

The txop parameter is supported by rt61pci and rt73usb,
and thus should be written to the register instead
of using the fixed value set during initialization.

Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
/drivers/net/wireless/rt2x00/rt2x00queue.h
2bb057d07a0bc17475a7bf897fc41667ab08b73f 04-Aug-2008 Ivo van Doorn <ivdoorn@gmail.com> rt2x00: Implement HW encryption

Various rt2x00 devices support hardware encryption.

Most of them require the IV/EIV to be generated by mac80211,
but require it to be provided seperately instead of within
the frame itself. This means that rt2x00lib should extract
the data from the frame and place it in the frame descriptor.
During RX the IV/EIV is provided in the descriptor by the
hardware which means that it should be inserted into the
frame by rt2x00lib.

Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
/drivers/net/wireless/rt2x00/rt2x00queue.h
f126cba427170eac9e37311b2ab7afc0e2261906 15-Aug-2008 Jochen Friedrich <jochen@scram.de> rt2x00: Fix txdone_entry_desc_flags

txdone_entry_desc_flags is used with __set_bit and test_bit which
bit-shift the values, so don't bit-shift the flags in the enum.
Also make sure flags are initialized before being used.

Signed-off-by: Jochen Friedrich <jochen@scram.de>
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
/drivers/net/wireless/rt2x00/rt2x00queue.h
5adf6d63c1697ce1835daf2b5393488a71ee0dca 20-Jul-2008 Ivo van Doorn <ivdoorn@gmail.com> rt2x00: Fix QOS sequence counting

When IEEE80211_TX_CTL_ASSIGN_SEQ is not set,
the driver should disable hardware sequence counting
to make sure the mac80211 provided counter is used.
This fixes QOS sequence counting, since that is one
of the cases where mac80211 provides a seperate
sequence counter.

By moving the sequence counting code to rt2x00queue
we make sure that _all_ frames get the sequence counter,
including RTS/CTS and Beacon frames.

Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
/drivers/net/wireless/rt2x00/rt2x00queue.h
ae73e58ea64f121b26437a10937330e77ff48f33 04-Jul-2008 Ivo van Doorn <ivdoorn@gmail.com> rt2x00: Report RX end time for rt2400pci

rt2400 is the only currently available rt2x00 driver which
supports reporting of the RX end time for frames.
Since mac80211 uses this information for IBSS syncing, it
is important that it is being reported.

v2: Complement 32 bits of RX timestamp with upper 32bits from TSF

Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
/drivers/net/wireless/rt2x00/rt2x00queue.h
f529932ce27e809e8c9bab5d744df5aef8a89157 16-Jun-2008 Ivo van Doorn <ivdoorn@gmail.com> rt2x00: Increase queue size

Without the preallocated DMA we can now safely increase
the queue size withotu negative impact on the memory
requirements of rt2x00.

Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
/drivers/net/wireless/rt2x00/rt2x00queue.h
d74f5ba473b915e5d4ea1ed391984bb62d9de8b1 16-Jun-2008 Ivo van Doorn <ivdoorn@gmail.com> rt2x00: Cleanup symbol exports

With a bit of code moving to rt2x00lib within the
TX and RX paths we can now remove a lot of EXPORT_SYMBOL_GPL()
statements. This cleans up the interface between rt2x00lib
and the drivers and has the additional benefit that rt2x00pci
and rt2x00usb are trimmed down in size as well since they
have less to do.

Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
/drivers/net/wireless/rt2x00/rt2x00queue.h
c4da004857056e6ee034c4110ccdcba659077b7e 16-Jun-2008 Gertjan van Wingerde <gwingerde@kpnplanet.nl> rt2x00: Replace statically allocated DMA buffers with mapped skb's.

The current PCI drivers require a lot of pre-allocated DMA buffers. Reduce this
by using dynamically mapped skb's (using pci_map_single) instead of the pre-
allocated DMA buffers that are allocated at device start-up time.

At the same time move common RX path code into rt2x00lib from rt2x00pci and
rt2x00usb, as the RX paths now are now almost the same.

Signed-off-by: Gertjan van Wingerde <gwingerde@kpnplanet.nl>
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
/drivers/net/wireless/rt2x00/rt2x00queue.h
d56d453a1dd85aff08fe6965f395049725fdb04e 06-Jun-2008 Gertjan van Wingerde <gwingerde@wingerd.gvw.nl> rt2x00: Cleanup struct skb_frame_desc.

The data and data_len fields aren't really necessary in struct
skb_frame_desc, as they can be deduced from the skb itself.

Signed-off-by: Gertjan van Wingerde <gwingerde@kpnplanet.nl>
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
/drivers/net/wireless/rt2x00/rt2x00queue.h
b869767b6f5049f1d1ede2bb3e48832e0722ca5a 06-Jun-2008 Ivo van Doorn <IvDoorn@gmail.com> rt2x00: Don't kick TX queue after each frame

TX queues shouldn't be kicked after each frame that is put into the
queue. This could cause problems during RTS and CTS-to-self as well
as with fragmentation. In all those cases you want all frames to be
send out in a single burst. Off course we shouldn't let the queue fill
up entirely, thus we introduce a 10% threshold which, when reached,
will force the frames to be send out regardless of the frame.

In addition we should prevent queues to become full in such a way
that the tx() handler can fail. Instead of stopping the queue when
it is full, we should stop it when it is below the threshold.

Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
/drivers/net/wireless/rt2x00/rt2x00queue.h
f019d51410a9b61278eeff811a1ca11d2a905241 06-Jun-2008 Ivo van Doorn <IvDoorn@gmail.com> rt2x00: Implement rt2x00usb_kick_tx_queue()

rt2x00usb_kick_tx_queue() will loop over all entries
within the INDEX_DONE->INDEX range and kick each entry
which is pending to be kicked. This makes the kick_tx_queue
approach work the same as with the PCI drivers which
will allow for more code generalisation into rt2x00lib.

Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
/drivers/net/wireless/rt2x00/rt2x00queue.h
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>
/drivers/net/wireless/rt2x00/rt2x00queue.h
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>
/drivers/net/wireless/rt2x00/rt2x00queue.h
7050ec821c52826b63835dde54ee3d71c7db4262 10-May-2008 Ivo van Doorn <ivdoorn@gmail.com> rt2x00: Split rt2x00lib_write_tx_desc()

Split rt2x00lib_write_tx_desc() up into a TX descriptor initializor
and TX descriptor writer.

This split is required to properly allow mac80211 to move its
tx_control structure into the skb->cb array.
The rt2x00queue_create_tx_descriptor() function will read all tx control
information and convert it into a rt2x00 TX descriptor information structure.
After that function is complete, we have all information we needed from the
tx control structure and are free to start writing into the skb->cb array
for our own purposes.
rt2x00queue_write_tx_descriptor() will be in charge of really sending
the TX descriptor to the hardware and kicking the TX queue.

Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
/drivers/net/wireless/rt2x00/rt2x00queue.h
61448f88078e813bbaaa58eb775d650c85e7d407 10-May-2008 Gertjan van Wingerde <gwingerde@kpnplanet.nl> rt2x00: Fix queue related oops in case of deselected mac80211 multi-queue feature.

With the integration of the mac80211 multiqueue patches it has become possible that the
mac80211 layer modifies the number of TX queues that is stored inside the ieee80211_hw
structure, especially when multi-queue is not selected.

The rt2x00 drivers are not well suited to handle that situation, as they allocate the
queue structures before mac80211 has modified the number of queues it is going to use,
and also expect the number of allocated queues to match the hardware implementation.

Hence, ensure that rt2x00 maintains by itself the number of queues that the hardware
supports, and, at the same time, making is not dependent on the preservation of contents
inside a mac80211 structure.

Signed-off-by: Gertjan van Wingerde <gwingerde@kpnplanet.nl>
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
/drivers/net/wireless/rt2x00/rt2x00queue.h
61486e0f68d1f8966c09b734566a187d42d65c54 10-May-2008 Ivo van Doorn <ivdoorn@gmail.com> rt2x00: Remove ieee80211_tx_control argument from write_tx_desc()

Move the last remaining information details read from ieee80211_tx_control
in the drivers to the txentry_desc structure. After this we can
remove ieee80211_tx_control from the argument list for the callback function,
which makes it easier when the control information is moved into skb->cb

Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
/drivers/net/wireless/rt2x00/rt2x00queue.h
fb55f4d1fa252ba1e479284b79da1049d658c371 10-May-2008 Ivo van Doorn <ivdoorn@gmail.com> rt2x00: Fix TX status reporting

The tx_status enumeration was broken since the introduction
of rt61pci. That driver uses different values to report the
status of the tx action.
This would lead to frames that were reported as success but
actually failed to be send out, or frames that were neither
successfull or failure which were reported as failure.

Fix this by change the TX status reporting and more explicitely
check for failure or success. Note that a third possibility is
added "unknown". Not all hardware (USB) can report the actual
TX status, for rt61pci some frames will receive this status
because the TXdone handler is never called for those frames.
This unknown will now be handled as neither success or failure,
so we no longer increment the failure counter while this conclusion
could not be determined from the real status of the frame.

Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
/drivers/net/wireless/rt2x00/rt2x00queue.h
5a6e59991b82580c3ca00115603b85762ec76104 10-May-2008 Ivo van Doorn <ivdoorn@gmail.com> rt2x00: trim skb_frame_desc to 32 bytes

Remove frame_type from skb_frame_desc and pass it
as argument to rt2x00debug_dump_frame().

Change data_len and desc_len to unsigned short
to save another 4 bytes in skb_frame_desc. Note that
this was the only location where the data_len and
desc_len was not yet treated as unsigned short.

This trim is required to help mac80211 with adding
the TX control and TX status informtation into the
skb->cb structure. When that happens, drivers will
have approximately 40 bytes left to use freely.

Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
/drivers/net/wireless/rt2x00/rt2x00queue.h
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>
/drivers/net/wireless/rt2x00/rt2x00queue.h
e58c6aca99357d7f85f18e0b661d8c5a87f926a9 21-Apr-2008 Ivo van Doorn <ivdoorn@gmail.com> rt2x00: Use rt2x00 queue numbering

Use the rt2x00 queue enumeration as much as possible,
removing the usage of the mac80211 queue numbering
wherever it is possible.

This makes it easier for mac80211 to change it queue
identification scheme without having to deal with
big changes in the rt2x00 code.

Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
/drivers/net/wireless/rt2x00/rt2x00queue.h
19d30e02998ef1eb9f82a7d3ce9b4a97dba5aa13 15-Mar-2008 Ivo van Doorn <ivdoorn@gmail.com> rt2x00: Add dev_flags to rx descriptor

The rxdone_entry_desc structure contains 3 fields
which are always 1 or 0. We can safe 8 bytes by
replacing them with a single dev_flags fields which
contain the flags for those settings.

Additionally we can remove the OFDM flag since it
is no longer used since the introduction of the
SIGNAL_PLCP flag.

Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
/drivers/net/wireless/rt2x00/rt2x00queue.h
89993890aeb8fe58b2d49b2661965524802ab73c 09-Mar-2008 Ivo van Doorn <ivdoorn@gmail.com> rt2x00: Fix rt2400pci signal

After sampling hundreds of RX frame descriptors,
the results were conclusive:
- The Ralink documentation regarding the SIGNAL and RSSI are wrong.

It turns out that of the 5 BBR registers, we should not use BBR0 and BBR1
for SIGNAL and RSSI respectively, but actually BBR1 and BBR2.
BBR0 does show values, but the exact meaning remains unclear,
but they cannot be translated into a SIGNAL or RSSI field.
BBR3, BBR4 and BBR5 are always 0, so their meaning is unknown.

As it turns out, the reported SIGNAL is the PLCP value, this
in contradiction to what was expected looking at rt2500pci which
only reported the PLCP values for OFDM rates and bitrate values
for CCK rates.

This means we should let the driver raise the flag about the contents
of the SIGNAL field so rt2x00lib can always do the right thing based
on what the driver reports.

Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
/drivers/net/wireless/rt2x00/rt2x00queue.h
baf26a7eae3b05d25dd967b92eb2e09406ed9cf4 17-Feb-2008 Ivo van Doorn <ivdoorn@gmail.com> rt2x00: Don't report driver generated frames to tx_status()

This adds a new flag for the skb_frame_desc structure which is used to tag
rts/cts frames that are generated by the driver. Through the tag we can
recognize frames we have generated ourselves, so we don't report their tx
status to mac80211.

This patch is based on the original patch by
Mattias Nissler <mattias.nissler@gmx.de>.

Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
/drivers/net/wireless/rt2x00/rt2x00queue.h
5957da4c6e67a5447e75c2ad65252fdd5e22f9d0 03-Feb-2008 Ivo van Doorn <ivdoorn@gmail.com> rt2x00: Move beacon and atim queue defines into rt2x00

As Johannes Berg indicated the BEACON and AFTER_BEACON
queue indeces in mac80211 should be removed because they
are too hardware specific. This patch adds the queue index
defines into rt2x00queue.h and removes the dependency of
the defines inside mac80211.h.

Also move rt2x00pci_beacon_update() into rt2400pci and
rt2500pci individually since it is no longer a generic
function since rt61 and rt2800 no longer use that.

Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
/drivers/net/wireless/rt2x00/rt2x00queue.h
6bb40dd13b458beb55f5c60dba1cb28e814bd640 03-Feb-2008 Ivo van Doorn <ivdoorn@gmail.com> rt2x00: Add per-interface structure

Rework the interface handling. Delete the interface structure
and replace it with a per-interface structure. This changes the
way rt2x00 handles the active interface drastically.

Copy ieee80211_bss_conf to the this rt2x00_intf structure during
the bss_info_changed() callback function. This will allow us to
reference it later, and removes the requirement for the device flag
SHORT_PREAMBLE flag which is interface specific.

Drivers receive the option to give the maximum number of virtual
interfaces the device can handle. Virtual interface support:
rt2400pci: 1 sta or 1 ap, * monitor interfaces
rt2500pci: 1 sta or 1 ap, * monitor interfaces
rt2500usb: 1 sta or 1 ap, * monitor interfaces
rt61pci: 1 sta or 4 ap, * monitor interfaces
rt73usb: 1 sta or 4 ap, * monitor interfaces

At the moment none of the drivers support AP and STA interfaces
simultaneously, this is a hardware limitation so future support
will be very unlikely.

Each interface structure receives its dedicated beacon entry,
with this we can easily work with beaconing while multiple master
mode interfaces are currently active.

The configuration handlers for the MAC, BSSID and type are
often called together since they all belong to the interface
configuration. Merge the 3 configuration calls and cleanup
the API between rt2x00lib and the drivers. While we are cleaning
up the interface configuration anyway, we might as well clean up
the configuration handler as well.

Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
/drivers/net/wireless/rt2x00/rt2x00queue.h
181d6902b6bad978d157e69479c95cc0ff213a76 05-Feb-2008 Ivo van Doorn <IvDoorn@gmail.com> rt2x00: Queue handling overhaul

This introduces a big queue handling overhaul, this also
renames "ring" to "queues".

Move queue handling into rt2x00queue.c and the matching header,
use Kerneldoc to improve rt2x00 library documentation.

Access to the queues is now protected under a spinlock, this
to prevent race conditions which could corrupt the indexing
system of the queue.

Each queue entry allocates x bytes for driver/device specific data,
this cleans up the queue structure significantly and improves
code readability.

rt2500usb no longer needs 2 entries in the beacon queue to correctly
send out the guardian byte. This is now handled in the entry specific
structure.

rt61 and rt73 now use the correct descriptor size for beacon frames,
since this data is written into the registers not the entire TXD
descriptor was used but instead of a subset of it named TXINFO.

Finally this also fixes numerous other bugs related to incorrect
beacon handling or beacon related code.

Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
/drivers/net/wireless/rt2x00/rt2x00queue.h