linux.git/drivers/net/wireless/rt2x00/rt2x00queue.c, branch v2.6.29

rt2x00: Fix TX rate short preamble detection

2009-01-22T18:55:01+00:00

Mac80211 provides 2 structures to handle bitrates, namely
ieee80211_rate and ieee80211_tx_rate. To determine the short preamble
mode for an outgoing frame, the flag IEEE80211_TX_RC_USE_SHORT_PREAMBLE
must be checked on ieee80211_tx_rate and not ieee80211_rate (which rt2x00 did).

This fixes a regression which was triggered in 2.6.29-rcX as reported by Chris Clayton.

Signed-off-by: Ivo van Doorn 
Tested-By: Chris Clayton 
Signed-off-by: John W. Linville

rt2x00: Fix TX short preamble detection

2009-01-12T19:24:50+00:00

The short preamble mode was not correctly detected during TX,
rt2x00 used the rate->hw_value_short field but mac80211 is not
using this field that way.
Instead the flag IEEE80211_TX_RC_USE_SHORT_PREAMBLE should be
used to determine if the frame should be send out using
short preamble or not.

Signed-off-by: Ivo van Doorn 
Signed-off-by: John W. Linville

rt2x00: Move crypto TX descriptor handling to rt2x00crypto.c

2008-12-05T14:35:57+00:00

Move all code which determines the right TX descriptor
fields specific to crypto support into rt2x00crypto.c.
This makes the code in rt2x00queue more simpler and
better concentrates all crypto code into a single location.

With this we can also remove some ifdefs in rt2x00queue.c
since the code inside the ifdef is either very small, or
only calling empty functions (see empty function definitions
in rt2x00lib.h).

Signed-off-by: Ivo van Doorn 
Signed-off-by: John W. Linville

rt2x00: Implement HW encryption (rt2500usb)

2008-12-05T14:35:51+00:00

rt2500usb supports hardware encryption.
rt2500usb supports up to 4 shared and pairwise keys.

Signed-off-by: Ivo van Doorn 
Signed-off-by: John W. Linville

rt2x00: Store retry limit values

2008-12-05T14:35:50+00:00

Store retry limit values in the rt2x00dev structure.
This allows the removal of the FIXME where we assumed
the long retry is only used when working with RTS frames.

Instead we should check the current retry limit values
and decide if the required retry count for this frame
is a long or short retry.

Signed-off-by: Ivo van Doorn 
Signed-off-by: John W. Linville

rt2x00: Fix TX failure path

2008-11-25T21:32:54+00:00

The callback function write_tx_data() can only fail
when our ENTRY_OWNER_DEVICE_DATA flag on a queue entry
failed to determine the entry was not available and
it is in fact still owned by the hardware.
This means that if that function fails the queue
must be stopped in mac80211.

When rt2x00queue_get_queue() returns NULL in the TX
path, it means mac80211 has passed us an invalid queue,
although this should be impossible, it shouldn't hurt
if we send mac80211 a signal to stop the queue either.

Both issues can simply be resolved by removing their
manual failure handler and making them use the failure path
provided in rt2x00mac_tx().

Signed-off-by: Ivo van Doorn 
Signed-off-by: John W. Linville

rt2x00: Optimize get_duration / get_duration_res

2008-11-21T16:08:16+00:00

We can optimize get_duration and get_duration_res
by making them a macro. They are really simple
calculation handlers so this doesn't matter much.

Often (especially in rt2400pci and rt2500pci,
the arguments are hardcoded, and the result value
is passed into other hardcoded values.

By making the functions a macro GCC can
optimize the entire thing much better.

Signed-off-by: Ivo van Doorn 
Signed-off-by: John W. Linville

rt2x00: Cleanup TX/RX entry handling

2008-11-21T16:08:16+00:00

Merge the callback functions init_txentry() and
init_rxentry(). This makes life in rt2x00lib a
lot simpler and we can cleanup several functions.

rt2x00pci contained "fake" FIELD definitions for
descriptor words. This is not flexible since it
assumes the driver will always have the same field
to indicate if a driver is available or not.
This should be dependent on the driver, and we
should add a callback function for this.

Signed-off-by: Ivo van Doorn 
Signed-off-by: John W. Linville

rt2x00: reduce checkpatch.pl errors

2008-10-31T23:00:40+00:00

A few changes to reduce checkpatch.pl errors in the rt2x00 driver.  For
the most part, I only fixed cosmetic things, and left the actual 'code
flow' untouched (hopefully)!

Diff is against wireless-testing HEAD.

Signed-off-by: John Daiker 
Signed-off-by: Ivo van Doorn 
Signed-off-by: John W. Linville

mac80211/drivers: rewrite the rate control API

2008-10-31T23:00:23+00:00

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 
Signed-off-by: Johannes Berg 
Signed-off-by: John W. Linville