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| author | Andrei Otcheretianski | 2014-05-04 10:48:12 +0200 |
|---|---|---|
| committer | Emmanuel Grumbach | 2014-07-07 20:41:20 +0200 |
| commit | 7f0a7c671cdc0396f99b60b77bd02e2dee7c4838 (patch) | |
| tree | d7271d4347e6f758cc4b98fe19d5c6babbc20881 /drivers/net/wireless/iwlwifi/mvm/mvm.h | |
| parent | iwlwifi: mvm: Protect mvm->csa_vif with RCU (diff) | |
| download | kernel-qcow2-linux-7f0a7c671cdc0396f99b60b77bd02e2dee7c4838.tar.gz kernel-qcow2-linux-7f0a7c671cdc0396f99b60b77bd02e2dee7c4838.tar.xz kernel-qcow2-linux-7f0a7c671cdc0396f99b60b77bd02e2dee7c4838.zip | |
iwlwifi: mvm: Reflect GO channel switch in NoA
According to the spec, GO/AP should perform the channel switch just
before "beacon 0". However, since the exact timing isn't defined,
it may result in a sudden GO disappearance from the channel.
Prevent potential packet loss when performing the CS by scheduling
NoA time event and executing the channel switch flow when a notification
from fw is received.
Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Diffstat (limited to 'drivers/net/wireless/iwlwifi/mvm/mvm.h')
| -rw-r--r-- | drivers/net/wireless/iwlwifi/mvm/mvm.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/net/wireless/iwlwifi/mvm/mvm.h b/drivers/net/wireless/iwlwifi/mvm/mvm.h index 5bb42af8886b..db496c5c73fc 100644 --- a/drivers/net/wireless/iwlwifi/mvm/mvm.h +++ b/drivers/net/wireless/iwlwifi/mvm/mvm.h @@ -83,6 +83,18 @@ #define IWL_RSSI_OFFSET 50 #define IWL_MVM_MISSED_BEACONS_THRESHOLD 8 +/* + * The CSA NoA is scheduled IWL_MVM_CHANNEL_SWITCH_TIME TUs before "beacon 0" + * TBTT. This value should be big enough to ensure that we switch in time. + */ +#define IWL_MVM_CHANNEL_SWITCH_TIME 40 + +/* + * This value (in TUs) is used to fine tune the CSA NoA end time which should + * be just before "beacon 0" TBTT. + */ +#define IWL_MVM_CHANNEL_SWITCH_MARGIN 4 + enum iwl_mvm_tx_fifo { IWL_MVM_TX_FIFO_BK = 0, IWL_MVM_TX_FIFO_BE, |