tree fdb12efd4445db8f27e90411ff182b30e33981ff
parent 716c74b00717ad9caedb4a46059fb64a3da99808
author Wey-Yi Guy <wey-yi.w.guy@intel.com> 1277410715 -0700
committer Wey-Yi Guy <wey-yi.w.guy@intel.com> 1278094245 -0700

iwlwifi: add support for device tx flush request

"Flush" request can come from two different sources, it can either from
mac80211, or from device when the operation is needed. Here
adding the support for device issue "flush" request.

When receive tx complete with status is TX_STATUS_FAIL_RFKILL_FLUSH,
issue REPLY_TXFIFO_FLUSH command to uCode to flush out all the tx frames
in queues.

In this condition, since mac80211 has no knowledge of "flush" operation,
driver need to stop all the tx queues and wait for the operation
completed before wake up the queues for frames transmission.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>