iwlwifi: mvm: Configure fragmented scan for scheduled scan

Configure the FW to use fragmented scan when the traffic load is high
or low latency traffic is on. This is useful for scans that are
managed by the FW (e.g. scheduled scan).

Signed-off-by: Avraham Stern <avraham.stern@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>

diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h b/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h
index 4bde2d0..419afa4 100644 (file)
--- a/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h
@@ -643,6 +643,7 @@ struct iwl_mvm {
        unsigned int scan_status;
        void *scan_cmd;
        struct iwl_mcast_filter_cmd *mcast_filter_cmd;
+       bool scan_fragmented;
 
        /* max number of simultaneous scans the FW supports */
        unsigned int max_scans;

diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/scan.c b/drivers/net/wireless/intel/iwlwifi/mvm/scan.c
index d6e0c1b..6b9b190 100644 (file)
--- a/drivers/net/wireless/intel/iwlwifi/mvm/scan.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/scan.c
@@ -920,6 +920,8 @@ int iwl_mvm_config_scan(struct iwl_mvm *mvm)
        if (!scan_config)
                return -ENOMEM;
 
+       mvm->scan_fragmented = iwl_mvm_low_latency(mvm);
+
        scan_config->flags = cpu_to_le32(SCAN_CONFIG_FLAG_ACTIVATE |
                                         SCAN_CONFIG_FLAG_ALLOW_CHUB_REQS |
                                         SCAN_CONFIG_FLAG_SET_TX_CHAINS |
@@ -928,7 +930,10 @@ int iwl_mvm_config_scan(struct iwl_mvm *mvm)
                                         SCAN_CONFIG_FLAG_SET_LEGACY_RATES |
                                         SCAN_CONFIG_FLAG_SET_MAC_ADDR |
                                         SCAN_CONFIG_FLAG_SET_CHANNEL_FLAGS|
-                                        SCAN_CONFIG_N_CHANNELS(num_channels));
+                                        SCAN_CONFIG_N_CHANNELS(num_channels) |
+                                        (mvm->scan_fragmented ?
+                                         SCAN_CONFIG_FLAG_SET_FRAGMENTED :
+                                         SCAN_CONFIG_FLAG_CLEAR_FRAGMENTED));
        scan_config->tx_chains = cpu_to_le32(iwl_mvm_get_valid_tx_ant(mvm));
        scan_config->rx_chains = cpu_to_le32(iwl_mvm_scan_rx_ant(mvm));
        scan_config->legacy_rates = iwl_mvm_scan_config_rates(mvm);