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dd6a574e09
freebsd-src/sys/dev/ath
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Adrian Chadd dd6a574e09 Enable the use of TDMA on an 802.11n channel (with aggregation disabled, 
of course.)

There's a few things that needed to happen:

* In case someone decides to set the beacon transmission rate to be
  at an MCS rate, use the MCS-aware version of the duration calculation
  to figure out how long the received beacon frame was.

* If TxOP enforcing is available on the hardware and we're doing TDMA,
  enable it after a reset and set the TDMA guard interval to zero.
  This seems to behave fine.

TODO:

* Although I haven't yet seen packet loss, the PHY errors that would be
  triggered (specifically Transmit-Override-Receive) aren't enabled
  by the 11n HAL.  I'll have to do some work to enable these PHY errors
  for debugging.

What broke:

* My recent changes to the TX queue handling has resulted in the driver
  not keeping the hardware queue properly filled when doing non-aggregate
  traffic.  I have a patch to commit soon which fixes this situation
  (albeit by reminding me about how my ath driver locking isn't working
  out, sigh.)

  So if you want to test this without updating to the next set of patches
  that I commit, just bump the sysctl dev.ath.X.hwq_limit from 2 to 32.

Tested:

* AR5416 <-> AR5416, with ampdu disabled, HT40, 5GHz, MCS12+Short-GI.
  I saw 30mbit/sec in both directions using a bidirectional UDP test.
2013-05-21 18:02:54 +00:00
..
ath_dfs/null Add a method to explicitly disable radar reporting if required. 2013-01-02 01:36:10 +00:00
ath_hal Fix build break - the SetCapability calls return HAL_BOOL, 2013-05-21 14:28:05 +00:00
ath_rate I give up - just throw the EWMA update into the normal update_stats() 2013-02-27 04:33:06 +00:00
ah_osdep.c Fix the HAL debugging to only use one bit to mark a message as unmaskable. 2012-07-01 02:34:32 +00:00
ah_osdep.h Migrate the ath_hal_filltxdesc() API to take a list of buffer/seglen values. 2012-08-05 10:12:27 +00:00
if_ath_ahb.c Create a new TX lock specifically for queuing frames. 2013-02-07 07:50:16 +00:00
if_ath_alq.c Support sending ATH_ALQ messages with no payload. 2013-05-13 21:17:27 +00:00
if_ath_alq.h Add ALQ beacon debugging. 2013-05-13 21:18:00 +00:00
if_ath_beacon.c Be (very) careful about how to add more TX DMA work. 2013-05-18 18:27:53 +00:00
if_ath_beacon.h Overhaul the TXQ locking (again!) as part of some beacon/cabq timing 2013-03-24 00:03:12 +00:00
if_ath_debug.c TX EDMA debugging fixes: 2012-11-05 07:08:45 +00:00
if_ath_debug.h Add a debug method to dump the EDMA TX status descriptor contents out. 2012-11-03 04:53:44 +00:00
if_ath_keycache.c Don't allocate or program a key for the AR5210. 2012-11-19 23:54:05 +00:00
if_ath_keycache.h
if_ath_led.c Bring over the initial 802.11n bluetooth coexistence support code. 2012-06-26 22:16:53 +00:00
if_ath_led.h Refactor out the software LED config code into a common function, called 2011-12-26 05:46:22 +00:00
if_ath_misc.h Be (very) careful about how to add more TX DMA work. 2013-05-18 18:27:53 +00:00
if_ath_pci.c Create a new TX lock specifically for queuing frames. 2013-02-07 07:50:16 +00:00
if_ath_rx_edma.c Use a per-RX-queue deferred list, rather than a single deferred list for 2013-04-16 20:21:02 +00:00
if_ath_rx_edma.h Begin abstracting out the RX path in preparation for RX EDMA support. 2012-07-03 06:59:12 +00:00
if_ath_rx.c Implement STBC receive frame statistics. 2013-05-08 01:11:25 +00:00
if_ath_rx.h Fix the busdma logic to work with EDMA chipsets when using bounce 2013-04-04 08:21:56 +00:00
if_ath_spectral.c Fix format size. 2013-01-08 22:42:15 +00:00
if_ath_spectral.h Add a new (skeleton) spectral mode manager module. 2013-01-02 03:59:02 +00:00
if_ath_sysctl.c Implement STBC receive frame statistics. 2013-05-08 01:11:25 +00:00
if_ath_sysctl.h
if_ath_tdma.c Enable the use of TDMA on an 802.11n channel (with aggregation disabled, 2013-05-21 18:02:54 +00:00
if_ath_tdma.h Migrate the TDMA management functions out of if_ath.c into if_ath_tdma.c. 2012-05-20 02:49:42 +00:00
if_ath_tsf.h Migrate the bulk of the RX routines out from if_ath.c to if_ath_rx.[ch]. 2012-05-20 02:05:10 +00:00
if_ath_tx_edma.c Make sure the holding descriptor and link pointer are both freed during 2013-05-10 10:06:45 +00:00
if_ath_tx_edma.h Begin separating out the TX DMA setup in preparation for TX EDMA support. 2012-07-23 03:52:18 +00:00
if_ath_tx_ht.c Implement my first cut at "correct" node power-save and 2013-05-15 18:33:05 +00:00
if_ath_tx_ht.h Implement my first cut at "correct" node power-save and 2013-05-15 18:33:05 +00:00
if_ath_tx.c More non-ATH_DEBUG build fixes. 2013-05-19 01:33:17 +00:00
if_ath_tx.h Implement my first cut at "correct" node power-save and 2013-05-15 18:33:05 +00:00
if_ath.c Enable the use of TDMA on an 802.11n channel (with aggregation disabled, 2013-05-21 18:02:54 +00:00
if_athdfs.h Add a method to explicitly disable radar reporting if required. 2013-01-02 01:36:10 +00:00
if_athioctl.h Implement my first cut at "correct" node power-save and 2013-05-15 18:33:05 +00:00
if_athrate.h Update the rate series setup code to use the decisions already made in 2013-04-17 07:21:30 +00:00
if_athvar.h Enable the use of TDMA on an 802.11n channel (with aggregation disabled, 2013-05-21 18:02:54 +00:00