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  1. 02 6月, 2011 2 次提交
    • F
      ath9k: unify edma and non-edma tx code, improve tx fifo handling · fce041be
      由 Felix Fietkau 提交于 
      EDMA based chips (AR9380+) have 8 Tx FIFO slots, which are used to fix the
tx queue start/stop race conditions which have to be worked around for
earlier chips by keeping the last descriptor in the queue. The current code
stores all frames that do not fit onto the 8 FIFO slots in a separate
list. Whenever a FIFO slot is freed up, the next frame (or A-MPDU) from the
pending queue gets moved to that slot.

This process is not only inefficient, but also unnecessary. The code can
be improved visibly by keeping the pending queue fully linked, and moving
the contents of the entire queue to a FIFO slot as it becomes available.

This patch makes the necessary changes for that and also merges some code
that was duplicated for EDMA vs non-EDMA. It changes txq->axq_link to point
to the last descriptor instead of the link pointer, so that
ath9k_hw_set_desc_link can be used, which works on all chips.

With this patch, a small performance increase for non-aggregated traffic
was observed on AR9380 based embedded hardware.
Signed-off-by: NFelix Fietkau <nbd@openwrt.org>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
      fce041be
    • M
      ath9k: remove redundant if check · e62ddec9
      由 Mohammed Shafi Shajakhan 提交于 
      Signed-off-by: NMohammed Shafi Shajakhan <mshajakhan@atheros.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
      e62ddec9
  3. 27 5月, 2011 1 次提交
  5. 20 5月, 2011 2 次提交
  7. 17 5月, 2011 1 次提交
  9. 12 5月, 2011 2 次提交
  11. 11 5月, 2011 4 次提交
  13. 06 5月, 2011 2 次提交
  15. 27 4月, 2011 1 次提交
  17. 26 4月, 2011 3 次提交
  19. 20 4月, 2011 2 次提交
    • F
      ath9k: assign keycache slots to unencrypted stations · 93ae2dd2
      由 Felix Fietkau 提交于 
      Frame filtering relies on having a valid destination index (keycache slot),
to keep track of the destination. Assigning a keycache slot (configured
to unencrypted, with no key data attached) improves powersave handling in
AP mode with no encryption.
The dummy keycache entry for a station is cleared, when a real key gets
added.
Signed-off-by: NFelix Fietkau <nbd@openwrt.org>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
      93ae2dd2
    • F
      ath9k: fix powersave frame filtering/buffering in AP mode · 5519541d
      由 Felix Fietkau 提交于 
      This patch fixes a long standing issue of pending packets in the queue being
sent (and retransmitted many times) to sleeping stations.
This was made worse by aggregation through driver-internal retransmitting
of A-MDPU subframes.
Previously the hardware tx filter was cleared unconditionally for every
single packet - with this patch it uses the IEEE80211_TX_CTL_CLEAR_PS_FILT
for unaggregated frames.
A sta_notify driver op is added to stop aggregation for stations when they
enter powersave mode. Subframes stay buffered inside the driver, to ensure
that the BlockAck window keeps a sane state.
Since the driver uses software aggregation, the clearing of the tx filter
needs to be handled by the driver instead of mac80211 for aggregated frames.
Signed-off-by: NFelix Fietkau <nbd@openwrt.org>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
      5519541d
  21. 13 4月, 2011 2 次提交
  23. 09 4月, 2011 1 次提交
  25. 08 4月, 2011 4 次提交
  27. 31 3月, 2011 1 次提交
  29. 29 3月, 2011 1 次提交
  31. 24 3月, 2011 1 次提交
  33. 15 3月, 2011 1 次提交
  35. 01 3月, 2011 1 次提交
  37. 26 2月, 2011 3 次提交
  39. 22 2月, 2011 1 次提交
  41. 16 2月, 2011 1 次提交
  43. 15 2月, 2011 1 次提交
  45. 10 2月, 2011 2 次提交