iwlwifi: mvm: Alter passive scan fragmentation parameters in case of multi-MAC

Make passive scan fragmentation depends on the number of active
interfaces. In case of single-MAC, make passive scan less fragmented.

Signed-off-by: Haim Dreyfuss <haim.dreyfuss@intel.com>
Reviewed-by: Alexander Bondar <alexander.bondar@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>

diff --git a/drivers/net/wireless/iwlwifi/mvm/scan.c b/drivers/net/wireless/iwlwifi/mvm/scan.c
index ed229a8..348b9c4 100644 (file)
--- a/drivers/net/wireless/iwlwifi/mvm/scan.c
+++ b/drivers/net/wireless/iwlwifi/mvm/scan.c
@@ -284,11 +284,11 @@ static void iwl_mvm_scan_condition_iterator(void *data, u8 *mac,
                                            struct ieee80211_vif *vif)
 {
        struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
-       bool *global_bound = data;
+       int *global_cnt = data;
 
        if (vif->type != NL80211_IFTYPE_P2P_DEVICE && mvmvif->phy_ctxt &&
            mvmvif->phy_ctxt->id < MAX_PHYS)
-               *global_bound = true;
+               *global_cnt += 1;
 }
 
 static void iwl_mvm_scan_calc_params(struct iwl_mvm *mvm,
@@ -296,16 +296,16 @@ static void iwl_mvm_scan_calc_params(struct iwl_mvm *mvm,
                                     int n_ssids, u32 flags,
                                     struct iwl_mvm_scan_params *params)
 {
-       bool global_bound = false;
+       int global_cnt = 0;
        enum ieee80211_band band;
        u8 frag_passive_dwell = 0;
 
        ieee80211_iterate_active_interfaces_atomic(mvm->hw,
                                            IEEE80211_IFACE_ITER_NORMAL,
                                            iwl_mvm_scan_condition_iterator,
-                                           &global_bound);
+                                           &global_cnt);
 
-       if (!global_bound)
+       if (!global_cnt)
                goto not_bound;
 
        params->suspend_time = 30;
@@ -316,7 +316,11 @@ static void iwl_mvm_scan_calc_params(struct iwl_mvm *mvm,
                    IWL_UCODE_TLV_API_FRAGMENTED_SCAN) {
                        params->suspend_time = 105;
                        params->max_out_time = 70;
-                       frag_passive_dwell = 20;
+                       /*
+                        * If there is more than one active interface make
+                        * passive scan more fragmented.
+                        */
+                       frag_passive_dwell = (global_cnt < 2) ? 40 : 20;
                } else {
                        params->suspend_time = 120;
                        params->max_out_time = 120;