iwlwifi: mvm: add reorder buffer per queue
authorSara Sharon <sara.sharon@intel.com>
Wed, 23 Mar 2016 14:32:02 +0000 (16:32 +0200)
committerLuca Coelho <luciano.coelho@intel.com>
Tue, 10 May 2016 19:14:42 +0000 (22:14 +0300)
commitb915c10174fb7df533b7928046129c8f626cca42
tree49aac88d328859f845f1826a1ef0938071d56999
parent2dd493434db68f89c690a665e3ac3dad11b69134
iwlwifi: mvm: add reorder buffer per queue

Next hardware will direct packets to core based on the TCP/UDP
streams.
This logic can create holes in reorder buffer since packets that
belong to other stream were directed to a different core.
However, those are valid holes and the packets can be indicated
in L3 order.

The hardware will utilize a mechanism of informing the driver of
the normalized ssn and the driver shall release all packets that
SN is lower than the nssn.
This enables managing the reorder across the queues without sharing
any data between them.

The reorder buffer is allocated and released directly in the RX path
in order to avoid various races between control path and rx path.
The code utilizes the internal messaging to notify rx queues of when
to delete the reorder buffer.

Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c
drivers/net/wireless/intel/iwlwifi/mvm/mvm.h
drivers/net/wireless/intel/iwlwifi/mvm/rxmq.c
drivers/net/wireless/intel/iwlwifi/mvm/sta.c
drivers/net/wireless/intel/iwlwifi/mvm/sta.h