iwlwifi: mvm: don't update quota in firmware too often

When updating quota in the firmware, it has to reset quite a bit
of internal state, which apparently can have an adverse impact on
its operation.

Avoid that by only updating the quota command when there are any
signification changes, i.e. added/removed bindings or changes in
quota that are bigger than 8 TU within a binding.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/net/wireless/iwlwifi/mvm/fw.c b/drivers/net/wireless/iwlwifi/mvm/fw.c
index 21d606028ca6..23fd711a67e4 100644
--- a/drivers/net/wireless/iwlwifi/mvm/fw.c
+++ b/drivers/net/wireless/iwlwifi/mvm/fw.c
@@ -454,6 +454,9 @@ int iwl_mvm_up(struct iwl_mvm *mvm)
         for (i = 0; i < IWL_MVM_STATION_COUNT; i++)
                 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[i], NULL);
 
+        /* reset quota debouncing buffer - 0xff will yield invalid data */
+        memset(&mvm->last_quota_cmd, 0xff, sizeof(mvm->last_quota_cmd));
+
         /* Add auxiliary station for scanning */
         ret = iwl_mvm_add_aux_sta(mvm);
         if (ret)