Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next into for-davem

Conflicts:
	drivers/net/wireless/ath/ath9k/debug.c
	net/mac80211/iface.c

1 files changed, 195 insertions, 67 deletions

diff --git a/drivers/net/wireless/iwlwifi/mvm/mac80211.c b/drivers/net/wireless/iwlwifi/mvm/mac80211.c
index a5eb8c82f16a..2ed296caeb28 100644
--- a/drivers/net/wireless/iwlwifi/mvm/mac80211.c
+++ b/drivers/net/wireless/iwlwifi/mvm/mac80211.c
@@ -127,6 +127,17 @@ static const struct wiphy_wowlan_tcp_support iwl_mvm_wowlan_tcp_support = {
 };
 #endif
 
+static void iwl_mvm_reset_phy_ctxts(struct iwl_mvm *mvm)
+{
+	int i;
+
+	memset(mvm->phy_ctxts, 0, sizeof(mvm->phy_ctxts));
+	for (i = 0; i < NUM_PHY_CTX; i++) {
+		mvm->phy_ctxts[i].id = i;
+		mvm->phy_ctxts[i].ref = 0;
+	}
+}
+
 int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
 {
 	struct ieee80211_hw *hw = mvm->hw;
@@ -141,7 +152,8 @@ int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
 		    IEEE80211_HW_SUPPORTS_PS |
 		    IEEE80211_HW_SUPPORTS_DYNAMIC_PS |
 		    IEEE80211_HW_AMPDU_AGGREGATION |
-		    IEEE80211_HW_TIMING_BEACON_ONLY;
+		    IEEE80211_HW_TIMING_BEACON_ONLY |
+		    IEEE80211_HW_CONNECTION_MONITOR;
 
 	hw->queues = IWL_MVM_FIRST_AGG_QUEUE;
 	hw->offchannel_tx_hw_queue = IWL_MVM_OFFCHANNEL_QUEUE;
@@ -158,7 +170,7 @@ int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
 
 	hw->sta_data_size = sizeof(struct iwl_mvm_sta);
 	hw->vif_data_size = sizeof(struct iwl_mvm_vif);
-	hw->chanctx_data_size = sizeof(struct iwl_mvm_phy_ctxt);
+	hw->chanctx_data_size = sizeof(u16);
 
 	hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
 		BIT(NL80211_IFTYPE_P2P_CLIENT) |
@@ -193,6 +205,8 @@ int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
 		hw->wiphy->n_addresses++;
 	}
 
+	iwl_mvm_reset_phy_ctxts(mvm);
+
 	/* we create the 802.11 header and a max-length SSID element */
 	hw->wiphy->max_scan_ie_len =
 		mvm->fw->ucode_capa.max_probe_length - 24 - 34;
@@ -252,8 +266,8 @@ static void iwl_mvm_mac_tx(struct ieee80211_hw *hw,
 {
 	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 
-	if (test_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status)) {
-		IWL_DEBUG_DROP(mvm, "Dropping - RF KILL\n");
+	if (iwl_mvm_is_radio_killed(mvm)) {
+		IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n");
 		goto drop;
 	}
 
@@ -345,8 +359,7 @@ static void iwl_mvm_cleanup_iterator(void *data, u8 *mac,
 	iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data);
 	spin_unlock_bh(&mvm->time_event_lock);
 
-	if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
-		mvmvif->phy_ctxt = NULL;
+	mvmvif->phy_ctxt = NULL;
 }
 
 static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
@@ -363,6 +376,9 @@ static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
 		mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
 		iwl_mvm_cleanup_iterator, mvm);
 
+	mvm->p2p_device_vif = NULL;
+
+	iwl_mvm_reset_phy_ctxts(mvm);
 	memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
 	memset(mvm->sta_drained, 0, sizeof(mvm->sta_drained));
 
@@ -456,6 +472,20 @@ static void iwl_mvm_power_update_iterator(void *data, u8 *mac,
 	iwl_mvm_power_update_mode(mvm, vif);
 }
 
+static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm)
+{
+	u16 i;
+
+	lockdep_assert_held(&mvm->mutex);
+
+	for (i = 0; i < NUM_PHY_CTX; i++)
+		if (!mvm->phy_ctxts[i].ref)
+			return &mvm->phy_ctxts[i];
+
+	IWL_ERR(mvm, "No available PHY context\n");
+	return NULL;
+}
+
 static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
 				     struct ieee80211_vif *vif)
 {
@@ -530,32 +560,34 @@ static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
 	 */
 	iwl_mvm_power_update_mode(mvm, vif);
 
+	/* beacon filtering */
+	if (!mvm->bf_allowed_vif &&
+	    vif->type == NL80211_IFTYPE_STATION && !vif->p2p){
+		mvm->bf_allowed_vif = mvmvif;
+		vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER;
+	}
+
+	ret = iwl_mvm_disable_beacon_filter(mvm, vif);
+	if (ret)
+		goto out_release;
+
 	/*
 	 * P2P_DEVICE interface does not have a channel context assigned to it,
 	 * so a dedicated PHY context is allocated to it and the corresponding
 	 * MAC context is bound to it at this stage.
 	 */
 	if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
-		struct ieee80211_channel *chan;
-		struct cfg80211_chan_def chandef;
 
-		mvmvif->phy_ctxt = &mvm->phy_ctxt_roc;
-
-		/*
-		 * The channel used here isn't relevant as it's
-		 * going to be overwritten as part of the ROC flow.
-		 * For now use the first channel we have.
-		 */
-		chan = &mvm->hw->wiphy->bands[IEEE80211_BAND_2GHZ]->channels[0];
-		cfg80211_chandef_create(&chandef, chan, NL80211_CHAN_NO_HT);
-		ret = iwl_mvm_phy_ctxt_add(mvm, mvmvif->phy_ctxt,
-					   &chandef, 1, 1);
-		if (ret)
+		mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
+		if (!mvmvif->phy_ctxt) {
+			ret = -ENOSPC;
 			goto out_remove_mac;
+		}
 
+		iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
 		ret = iwl_mvm_binding_add_vif(mvm, vif);
 		if (ret)
-			goto out_remove_phy;
+			goto out_unref_phy;
 
 		ret = iwl_mvm_add_bcast_sta(mvm, vif, &mvmvif->bcast_sta);
 		if (ret)
@@ -571,27 +603,17 @@ static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
 
  out_unbind:
 	iwl_mvm_binding_remove_vif(mvm, vif);
- out_remove_phy:
-	iwl_mvm_phy_ctxt_remove(mvm, mvmvif->phy_ctxt);
+ out_unref_phy:
+	iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
  out_remove_mac:
 	mvmvif->phy_ctxt = NULL;
 	iwl_mvm_mac_ctxt_remove(mvm, vif);
  out_release:
-	/*
-	 * TODO: remove this temporary code.
-	 * Currently MVM FW supports power management only on single MAC.
-	 * Check if only one additional interface remains after releasing
-	 * current one. Update power mode on the remaining interface.
-	 */
 	if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
 		mvm->vif_count--;
-	IWL_DEBUG_MAC80211(mvm, "Currently %d interfaces active\n",
-			   mvm->vif_count);
-	if (mvm->vif_count == 1) {
-		ieee80211_iterate_active_interfaces(
-					mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
-					iwl_mvm_power_update_iterator, mvm);
-	}
+	ieee80211_iterate_active_interfaces(
+		mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
+		iwl_mvm_power_update_iterator, mvm);
 	iwl_mvm_mac_ctxt_release(mvm, vif);
  out_unlock:
 	mutex_unlock(&mvm->mutex);
@@ -646,6 +668,11 @@ static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
 
 	mutex_lock(&mvm->mutex);
 
+	if (mvm->bf_allowed_vif == mvmvif) {
+		mvm->bf_allowed_vif = NULL;
+		vif->driver_flags &= ~IEEE80211_VIF_BEACON_FILTER;
+	}
+
 	iwl_mvm_vif_dbgfs_clean(mvm, vif);
 
 	/*
@@ -661,7 +688,7 @@ static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
 		mvm->p2p_device_vif = NULL;
 		iwl_mvm_rm_bcast_sta(mvm, &mvmvif->bcast_sta);
 		iwl_mvm_binding_remove_vif(mvm, vif);
-		iwl_mvm_phy_ctxt_remove(mvm, mvmvif->phy_ctxt);
+		iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
 		mvmvif->phy_ctxt = NULL;
 	}
 
@@ -748,6 +775,9 @@ static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
 			if (ret)
 				IWL_ERR(mvm, "failed to update quotas\n");
 		}
+		ret = iwl_mvm_power_update_mode(mvm, vif);
+		if (ret)
+			IWL_ERR(mvm, "failed to update power mode\n");
 	} else if (changes & BSS_CHANGED_DTIM_PERIOD) {
 		/*
 		 * We received a beacon _after_ association so
@@ -756,19 +786,9 @@ static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
 		iwl_mvm_remove_time_event(mvm, mvmvif,
 					  &mvmvif->time_event_data);
 	} else if (changes & BSS_CHANGED_PS) {
-		/*
-		 * TODO: remove this temporary code.
-		 * Currently MVM FW supports power management only on single
-		 * MAC. Avoid power mode update if more than one interface
-		 * is active.
-		 */
-		IWL_DEBUG_MAC80211(mvm, "Currently %d interfaces active\n",
-				   mvm->vif_count);
-		if (mvm->vif_count == 1) {
-			ret = iwl_mvm_power_update_mode(mvm, vif);
-			if (ret)
-				IWL_ERR(mvm, "failed to update power mode\n");
-		}
+		ret = iwl_mvm_power_update_mode(mvm, vif);
+		if (ret)
+			IWL_ERR(mvm, "failed to update power mode\n");
 	}
 }
 
@@ -999,9 +1019,13 @@ static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
 					     mvmvif->phy_ctxt->channel->band);
 	} else if (old_state == IEEE80211_STA_ASSOC &&
 		   new_state == IEEE80211_STA_AUTHORIZED) {
+		/* enable beacon filtering */
+		WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif));
 		ret = 0;
 	} else if (old_state == IEEE80211_STA_AUTHORIZED &&
 		   new_state == IEEE80211_STA_ASSOC) {
+		/* disable beacon filtering */
+		WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif));
 		ret = 0;
 	} else if (old_state == IEEE80211_STA_ASSOC &&
 		   new_state == IEEE80211_STA_AUTH) {
@@ -1167,29 +1191,107 @@ static int iwl_mvm_roc(struct ieee80211_hw *hw,
 		       enum ieee80211_roc_type type)
 {
 	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
+	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 	struct cfg80211_chan_def chandef;
-	int ret;
+	struct iwl_mvm_phy_ctxt *phy_ctxt;
+	int ret, i;
+
+	IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
+			   duration, type);
 
 	if (vif->type != NL80211_IFTYPE_P2P_DEVICE) {
 		IWL_ERR(mvm, "vif isn't a P2P_DEVICE: %d\n", vif->type);
 		return -EINVAL;
 	}
 
-	IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
-			   duration, type);
-
 	mutex_lock(&mvm->mutex);
 
+	for (i = 0; i < NUM_PHY_CTX; i++) {
+		phy_ctxt = &mvm->phy_ctxts[i];
+		if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt)
+			continue;
+
+		if (phy_ctxt->ref && channel == phy_ctxt->channel) {
+			/*
+			 * Unbind the P2P_DEVICE from the current PHY context,
+			 * and if the PHY context is not used remove it.
+			 */
+			ret = iwl_mvm_binding_remove_vif(mvm, vif);
+			if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
+				goto out_unlock;
+
+			iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
+
+			/* Bind the P2P_DEVICE to the current PHY Context */
+			mvmvif->phy_ctxt = phy_ctxt;
+
+			ret = iwl_mvm_binding_add_vif(mvm, vif);
+			if (WARN(ret, "Failed binding P2P_DEVICE\n"))
+				goto out_unlock;
+
+			iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
+			goto schedule_time_event;
+		}
+	}
+
+	/* Need to update the PHY context only if the ROC channel changed */
+	if (channel == mvmvif->phy_ctxt->channel)
+		goto schedule_time_event;
+
 	cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
-	ret = iwl_mvm_phy_ctxt_changed(mvm, &mvm->phy_ctxt_roc,
-				       &chandef, 1, 1);
 
+	/*
+	 * Change the PHY context configuration as it is currently referenced
+	 * only by the P2P Device MAC
+	 */
+	if (mvmvif->phy_ctxt->ref == 1) {
+		ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt,
+					       &chandef, 1, 1);
+		if (ret)
+			goto out_unlock;
+	} else {
+		/*
+		 * The PHY context is shared with other MACs. Need to remove the
+		 * P2P Device from the binding, allocate an new PHY context and
+		 * create a new binding
+		 */
+		phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
+		if (!phy_ctxt) {
+			ret = -ENOSPC;
+			goto out_unlock;
+		}
+
+		ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef,
+					       1, 1);
+		if (ret) {
+			IWL_ERR(mvm, "Failed to change PHY context\n");
+			goto out_unlock;
+		}
+
+		/* Unbind the P2P_DEVICE from the current PHY context */
+		ret = iwl_mvm_binding_remove_vif(mvm, vif);
+		if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
+			goto out_unlock;
+
+		iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
+
+		/* Bind the P2P_DEVICE to the new allocated PHY context */
+		mvmvif->phy_ctxt = phy_ctxt;
+
+		ret = iwl_mvm_binding_add_vif(mvm, vif);
+		if (WARN(ret, "Failed binding P2P_DEVICE\n"))
+			goto out_unlock;
+
+		iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
+	}
+
+schedule_time_event:
 	/* Schedule the time events */
 	ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
 
+out_unlock:
 	mutex_unlock(&mvm->mutex);
 	IWL_DEBUG_MAC80211(mvm, "leave\n");
-
 	return ret;
 }
 
@@ -1211,15 +1313,30 @@ static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
 			       struct ieee80211_chanctx_conf *ctx)
 {
 	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
-	struct iwl_mvm_phy_ctxt *phy_ctxt = (void *)ctx->drv_priv;
+	u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
+	struct iwl_mvm_phy_ctxt *phy_ctxt;
 	int ret;
 
+	IWL_DEBUG_MAC80211(mvm, "Add channel context\n");
+
 	mutex_lock(&mvm->mutex);
+	phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
+	if (!phy_ctxt) {
+		ret = -ENOSPC;
+		goto out;
+	}
 
-	IWL_DEBUG_MAC80211(mvm, "Add PHY context\n");
-	ret = iwl_mvm_phy_ctxt_add(mvm, phy_ctxt, &ctx->def,
-				   ctx->rx_chains_static,
-				   ctx->rx_chains_dynamic);
+	ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->def,
+				       ctx->rx_chains_static,
+				       ctx->rx_chains_dynamic);
+	if (ret) {
+		IWL_ERR(mvm, "Failed to add PHY context\n");
+		goto out;
+	}
+
+	iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt);
+	*phy_ctxt_id = phy_ctxt->id;
+out:
 	mutex_unlock(&mvm->mutex);
 	return ret;
 }
@@ -1228,10 +1345,11 @@ static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
 				   struct ieee80211_chanctx_conf *ctx)
 {
 	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
-	struct iwl_mvm_phy_ctxt *phy_ctxt = (void *)ctx->drv_priv;
+	u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
+	struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
 
 	mutex_lock(&mvm->mutex);
-	iwl_mvm_phy_ctxt_remove(mvm, phy_ctxt);
+	iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt);
 	mutex_unlock(&mvm->mutex);
 }
 
@@ -1240,7 +1358,16 @@ static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
 				   u32 changed)
 {
 	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
-	struct iwl_mvm_phy_ctxt *phy_ctxt = (void *)ctx->drv_priv;
+	u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
+	struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
+
+	if (WARN_ONCE((phy_ctxt->ref > 1) &&
+		      (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH |
+				   IEEE80211_CHANCTX_CHANGE_RX_CHAINS |
+				   IEEE80211_CHANCTX_CHANGE_RADAR)),
+		      "Cannot change PHY. Ref=%d, changed=0x%X\n",
+		      phy_ctxt->ref, changed))
+		return;
 
 	mutex_lock(&mvm->mutex);
 	iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->def,
@@ -1254,13 +1381,14 @@ static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
 				      struct ieee80211_chanctx_conf *ctx)
 {
 	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
-	struct iwl_mvm_phy_ctxt *phyctx = (void *)ctx->drv_priv;
+	u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
+	struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
 	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 	int ret;
 
 	mutex_lock(&mvm->mutex);
 
-	mvmvif->phy_ctxt = phyctx;
+	mvmvif->phy_ctxt = phy_ctxt;
 
 	switch (vif->type) {
 	case NL80211_IFTYPE_AP: