iwlwifi: mvm: don't delay the association until after beacon

If we haven't heard a beacon before we associate we can
still start the association process and set the MAC in
the firmware to associated only after having received a
beacon with DTIM period by reacting to the new change
flag (BSS_CHANGED_DTIM_PERIOD) from mac80211.

This reduces the association time in these cases.

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

diff --git a/drivers/net/wireless/iwlwifi/mvm/mac-ctxt.c b/drivers/net/wireless/iwlwifi/mvm/mac-ctxt.c
index c08a17a..0854dc3 100644 (file)
--- a/drivers/net/wireless/iwlwifi/mvm/mac-ctxt.c
+++ b/drivers/net/wireless/iwlwifi/mvm/mac-ctxt.c
@@ -584,7 +584,11 @@ static void iwl_mvm_mac_ctxt_cmd_fill_sta(struct iwl_mvm *mvm,
                                          struct ieee80211_vif *vif,
                                          struct iwl_mac_data_sta *ctxt_sta)
 {
-       ctxt_sta->is_assoc = cpu_to_le32(vif->bss_conf.assoc ? 1 : 0);
+       /* We need the dtim_period to set the MAC as associated */
+       if (vif->bss_conf.assoc && vif->bss_conf.dtim_period)
+               ctxt_sta->is_assoc = cpu_to_le32(1);
+       else
+               ctxt_sta->is_assoc = cpu_to_le32(0);
 
        ctxt_sta->bi = cpu_to_le32(vif->bss_conf.beacon_int);
        ctxt_sta->bi_reciprocal =

diff --git a/drivers/net/wireless/iwlwifi/mvm/mac80211.c b/drivers/net/wireless/iwlwifi/mvm/mac80211.c
index e0d79e3..6bfcb3b 100644 (file)
--- a/drivers/net/wireless/iwlwifi/mvm/mac80211.c
+++ b/drivers/net/wireless/iwlwifi/mvm/mac80211.c
@@ -114,7 +114,6 @@ int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
                    IEEE80211_HW_QUEUE_CONTROL |
                    IEEE80211_HW_WANT_MONITOR_VIF |
                    IEEE80211_HW_SCAN_WHILE_IDLE |
-                   IEEE80211_HW_NEED_DTIM_BEFORE_ASSOC |
                    IEEE80211_HW_SUPPORTS_PS |
                    IEEE80211_HW_SUPPORTS_DYNAMIC_PS |
                    IEEE80211_HW_AMPDU_AGGREGATION;
@@ -671,8 +670,6 @@ static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
                                IWL_ERR(mvm, "failed to update quotas\n");
                                return;
                        }
-                       iwl_mvm_remove_time_event(mvm, mvmvif,
-                                                 &mvmvif->time_event_data);
                } else if (mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) {
                        /* remove AP station now that the MAC is unassoc */
                        ret = iwl_mvm_rm_sta_id(mvm, vif, mvmvif->ap_sta_id);
@@ -684,6 +681,13 @@ static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
                        if (ret)
                                IWL_ERR(mvm, "failed to update quotas\n");
                }
+       } else if (changes & BSS_CHANGED_DTIM_PERIOD) {
+               /*
+                * We received a beacon _after_ association so
+                * remove the session protection.
+                */
+               iwl_mvm_remove_time_event(mvm, mvmvif,
+                                         &mvmvif->time_event_data);
        } else if (changes & BSS_CHANGED_PS) {
                /*
                 * TODO: remove this temporary code.

diff --git a/drivers/net/wireless/iwlwifi/mvm/time-event.c b/drivers/net/wireless/iwlwifi/mvm/time-event.c
index 4d62a5d..194bfb7 100644 (file)
--- a/drivers/net/wireless/iwlwifi/mvm/time-event.c
+++ b/drivers/net/wireless/iwlwifi/mvm/time-event.c
@@ -184,9 +184,11 @@ static void iwl_mvm_te_handle_notif(struct iwl_mvm *mvm,
                 */
                if (te_data->vif->type == NL80211_IFTYPE_STATION &&
                    (!te_data->vif->bss_conf.assoc ||
-                    !te_data->vif->bss_conf.dtim_period))
+                    !te_data->vif->bss_conf.dtim_period)) {
                        IWL_ERR(mvm,
                                "No assocation and the time event is over already...\n");
+                       ieee80211_connection_loss(te_data->vif);
+               }
 
                iwl_mvm_te_clear_data(mvm, te_data);
        } else if (le32_to_cpu(notif->action) == TE_NOTIF_HOST_START) {