Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next

Pull networking updates from David Miller:
 "Here is my initial pull request for the networking subsystem during
  this merge window:

   1) Support for ESN in AH (RFC 4302) from Fan Du.

   2) Add full kernel doc for ethtool command structures, from Ben
      Hutchings.

   3) Add BCM7xxx PHY driver, from Florian Fainelli.

   4) Export computed TCP rate information in netlink socket dumps, from
      Eric Dumazet.

   5) Allow IPSEC SA to be dumped partially using a filter, from Nicolas
      Dichtel.

   6) Convert many drivers to pci_enable_msix_range(), from Alexander
      Gordeev.

   7) Record SKB timestamps more efficiently, from Eric Dumazet.

   8) Switch to microsecond resolution for TCP round trip times, also
      from Eric Dumazet.

   9) Clean up and fix 6lowpan fragmentation handling by making use of
      the existing inet_frag api for it's implementation.

  10) Add TX grant mapping to xen-netback driver, from Zoltan Kiss.

  11) Auto size SKB lengths when composing netlink messages based upon
      past message sizes used, from Eric Dumazet.

  12) qdisc dumps can take a long time, add a cond_resched(), From Eric
      Dumazet.

  13) Sanitize netpoll core and drivers wrt.  SKB handling semantics.
      Get rid of never-used-in-tree netpoll RX handling.  From Eric W
      Biederman.

  14) Support inter-address-family and namespace changing in VTI tunnel
      driver(s).  From Steffen Klassert.

  15) Add Altera TSE driver, from Vince Bridgers.

  16) Optimizing csum_replace2() so that it doesn't adjust the checksum
      by checksumming the entire header, from Eric Dumazet.

  17) Expand BPF internal implementation for faster interpreting, more
      direct translations into JIT'd code, and much cleaner uses of BPF
      filtering in non-socket ocntexts.  From Daniel Borkmann and Alexei
      Starovoitov"

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1976 commits)
  netpoll: Use skb_irq_freeable to make zap_completion_queue safe.
  net: Add a test to see if a skb is freeable in irq context
  qlcnic: Fix build failure due to undefined reference to `vxlan_get_rx_port'
  net: ptp: move PTP classifier in its own file
  net: sxgbe: make "core_ops" static
  net: sxgbe: fix logical vs bitwise operation
  net: sxgbe: sxgbe_mdio_register() frees the bus
  Call efx_set_channels() before efx->type->dimension_resources()
  xen-netback: disable rogue vif in kthread context
  net/mlx4: Set proper build dependancy with vxlan
  be2net: fix build dependency on VxLAN
  mac802154: make csma/cca parameters per-wpan
  mac802154: allow only one WPAN to be up at any given time
  net: filter: minor: fix kdoc in __sk_run_filter
  netlink: don't compare the nul-termination in nla_strcmp
  can: c_can: Avoid led toggling for every packet.
  can: c_can: Simplify TX interrupt cleanup
  can: c_can: Store dlc private
  can: c_can: Reduce register access
  can: c_can: Make the code readable
  ...

1 files changed, 514 insertions, 87 deletions

diff --git a/drivers/net/wireless/iwlwifi/mvm/mac80211.c b/drivers/net/wireless/iwlwifi/mvm/mac80211.c
index c35b8661b395..4dd9ff43b8b6 100644
--- a/drivers/net/wireless/iwlwifi/mvm/mac80211.c
+++ b/drivers/net/wireless/iwlwifi/mvm/mac80211.c
@@ -66,7 +66,9 @@
 #include <linux/netdevice.h>
 #include <linux/etherdevice.h>
 #include <linux/ip.h>
+#include <linux/if_arp.h>
 #include <net/mac80211.h>
+#include <net/ieee80211_radiotap.h>
 #include <net/tcp.h>
 
 #include "iwl-op-mode.h"
@@ -128,6 +130,117 @@ static const struct wiphy_wowlan_tcp_support iwl_mvm_wowlan_tcp_support = {
 };
 #endif
 
+#ifdef CONFIG_IWLWIFI_BCAST_FILTERING
+/*
+ * Use the reserved field to indicate magic values.
+ * these values will only be used internally by the driver,
+ * and won't make it to the fw (reserved will be 0).
+ * BC_FILTER_MAGIC_IP - configure the val of this attribute to
+ *	be the vif's ip address. in case there is not a single
+ *	ip address (0, or more than 1), this attribute will
+ *	be skipped.
+ * BC_FILTER_MAGIC_MAC - set the val of this attribute to
+ *	the LSB bytes of the vif's mac address
+ */
+enum {
+	BC_FILTER_MAGIC_NONE = 0,
+	BC_FILTER_MAGIC_IP,
+	BC_FILTER_MAGIC_MAC,
+};
+
+static const struct iwl_fw_bcast_filter iwl_mvm_default_bcast_filters[] = {
+	{
+		/* arp */
+		.discard = 0,
+		.frame_type = BCAST_FILTER_FRAME_TYPE_ALL,
+		.attrs = {
+			{
+				/* frame type - arp, hw type - ethernet */
+				.offset_type =
+					BCAST_FILTER_OFFSET_PAYLOAD_START,
+				.offset = sizeof(rfc1042_header),
+				.val = cpu_to_be32(0x08060001),
+				.mask = cpu_to_be32(0xffffffff),
+			},
+			{
+				/* arp dest ip */
+				.offset_type =
+					BCAST_FILTER_OFFSET_PAYLOAD_START,
+				.offset = sizeof(rfc1042_header) + 2 +
+					  sizeof(struct arphdr) +
+					  ETH_ALEN + sizeof(__be32) +
+					  ETH_ALEN,
+				.mask = cpu_to_be32(0xffffffff),
+				/* mark it as special field */
+				.reserved1 = cpu_to_le16(BC_FILTER_MAGIC_IP),
+			},
+		},
+	},
+	{
+		/* dhcp offer bcast */
+		.discard = 0,
+		.frame_type = BCAST_FILTER_FRAME_TYPE_IPV4,
+		.attrs = {
+			{
+				/* udp dest port - 68 (bootp client)*/
+				.offset_type = BCAST_FILTER_OFFSET_IP_END,
+				.offset = offsetof(struct udphdr, dest),
+				.val = cpu_to_be32(0x00440000),
+				.mask = cpu_to_be32(0xffff0000),
+			},
+			{
+				/* dhcp - lsb bytes of client hw address */
+				.offset_type = BCAST_FILTER_OFFSET_IP_END,
+				.offset = 38,
+				.mask = cpu_to_be32(0xffffffff),
+				/* mark it as special field */
+				.reserved1 = cpu_to_le16(BC_FILTER_MAGIC_MAC),
+			},
+		},
+	},
+	/* last filter must be empty */
+	{},
+};
+#endif
+
+void iwl_mvm_ref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
+{
+	if (!iwl_mvm_is_d0i3_supported(mvm))
+		return;
+
+	IWL_DEBUG_RPM(mvm, "Take mvm reference - type %d\n", ref_type);
+	WARN_ON(test_and_set_bit(ref_type, mvm->ref_bitmap));
+	iwl_trans_ref(mvm->trans);
+}
+
+void iwl_mvm_unref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
+{
+	if (!iwl_mvm_is_d0i3_supported(mvm))
+		return;
+
+	IWL_DEBUG_RPM(mvm, "Leave mvm reference - type %d\n", ref_type);
+	WARN_ON(!test_and_clear_bit(ref_type, mvm->ref_bitmap));
+	iwl_trans_unref(mvm->trans);
+}
+
+static void
+iwl_mvm_unref_all_except(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref)
+{
+	int i;
+
+	if (!iwl_mvm_is_d0i3_supported(mvm))
+		return;
+
+	for_each_set_bit(i, mvm->ref_bitmap, IWL_MVM_REF_COUNT) {
+		if (ref == i)
+			continue;
+
+		IWL_DEBUG_RPM(mvm, "Cleanup: remove mvm ref type %d\n", i);
+		clear_bit(i, mvm->ref_bitmap);
+		iwl_trans_unref(mvm->trans);
+	}
+}
+
 static void iwl_mvm_reset_phy_ctxts(struct iwl_mvm *mvm)
 {
 	int i;
@@ -168,6 +281,9 @@ int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
 
 	hw->queues = mvm->first_agg_queue;
 	hw->offchannel_tx_hw_queue = IWL_MVM_OFFCHANNEL_QUEUE;
+	hw->radiotap_mcs_details |= IEEE80211_RADIOTAP_MCS_HAVE_FEC |
+				    IEEE80211_RADIOTAP_MCS_HAVE_STBC;
+	hw->radiotap_vht_details |= IEEE80211_RADIOTAP_VHT_KNOWN_STBC;
 	hw->rate_control_algorithm = "iwl-mvm-rs";
 
 	/*
@@ -179,7 +295,7 @@ int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
 	    !iwlwifi_mod_params.sw_crypto)
 		hw->flags |= IEEE80211_HW_MFP_CAPABLE;
 
-	if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT) {
+	if (0 && mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT) {
 		hw->flags |= IEEE80211_HW_SUPPORTS_UAPSD;
 		hw->uapsd_queues = IWL_UAPSD_AC_INFO;
 		hw->uapsd_max_sp_len = IWL_UAPSD_MAX_SP;
@@ -203,6 +319,9 @@ int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
 	hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG |
 				       REGULATORY_DISABLE_BEACON_HINTS;
 
+	if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_GO_UAPSD)
+		hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
+
 	hw->wiphy->iface_combinations = iwl_mvm_iface_combinations;
 	hw->wiphy->n_iface_combinations =
 		ARRAY_SIZE(iwl_mvm_iface_combinations);
@@ -246,7 +365,7 @@ int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
 	else
 		hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
 
-	if (0 && mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_SCHED_SCAN) {
+	if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_SCHED_SCAN) {
 		hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_SCHED_SCAN;
 		hw->wiphy->max_sched_scan_ssids = PROBE_OPTION_MAX;
 		hw->wiphy->max_match_sets = IWL_SCAN_MAX_PROFILES;
@@ -256,8 +375,7 @@ int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
 	}
 
 	hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN |
-			       NL80211_FEATURE_P2P_GO_OPPPS |
-			       NL80211_FEATURE_LOW_PRIORITY_SCAN;
+			       NL80211_FEATURE_P2P_GO_OPPPS;
 
 	mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
 
@@ -289,6 +407,11 @@ int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
 	}
 #endif
 
+#ifdef CONFIG_IWLWIFI_BCAST_FILTERING
+	/* assign default bcast filtering configuration */
+	mvm->bcast_filters = iwl_mvm_default_bcast_filters;
+#endif
+
 	ret = iwl_mvm_leds_init(mvm);
 	if (ret)
 		return ret;
@@ -300,11 +423,55 @@ int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
 	return ret;
 }
 
+static bool iwl_mvm_defer_tx(struct iwl_mvm *mvm,
+			     struct ieee80211_sta *sta,
+			     struct sk_buff *skb)
+{
+	struct iwl_mvm_sta *mvmsta;
+	bool defer = false;
+
+	/*
+	 * double check the IN_D0I3 flag both before and after
+	 * taking the spinlock, in order to prevent taking
+	 * the spinlock when not needed.
+	 */
+	if (likely(!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)))
+		return false;
+
+	spin_lock(&mvm->d0i3_tx_lock);
+	/*
+	 * testing the flag again ensures the skb dequeue
+	 * loop (on d0i3 exit) hasn't run yet.
+	 */
+	if (!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status))
+		goto out;
+
+	mvmsta = iwl_mvm_sta_from_mac80211(sta);
+	if (mvmsta->sta_id == IWL_MVM_STATION_COUNT ||
+	    mvmsta->sta_id != mvm->d0i3_ap_sta_id)
+		goto out;
+
+	__skb_queue_tail(&mvm->d0i3_tx, skb);
+	ieee80211_stop_queues(mvm->hw);
+
+	/* trigger wakeup */
+	iwl_mvm_ref(mvm, IWL_MVM_REF_TX);
+	iwl_mvm_unref(mvm, IWL_MVM_REF_TX);
+
+	defer = true;
+out:
+	spin_unlock(&mvm->d0i3_tx_lock);
+	return defer;
+}
+
 static void iwl_mvm_mac_tx(struct ieee80211_hw *hw,
 			   struct ieee80211_tx_control *control,
 			   struct sk_buff *skb)
 {
 	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
+	struct ieee80211_sta *sta = control->sta;
+	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
+	struct ieee80211_hdr *hdr = (void *)skb->data;
 
 	if (iwl_mvm_is_radio_killed(mvm)) {
 		IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n");
@@ -315,8 +482,18 @@ static void iwl_mvm_mac_tx(struct ieee80211_hw *hw,
 	    !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status))
 		goto drop;
 
-	if (control->sta) {
-		if (iwl_mvm_tx_skb(mvm, skb, control->sta))
+	/* treat non-bufferable MMPDUs as broadcast if sta is sleeping */
+	if (unlikely(info->flags & IEEE80211_TX_CTL_NO_PS_BUFFER &&
+		     ieee80211_is_mgmt(hdr->frame_control) &&
+		     !ieee80211_is_deauth(hdr->frame_control) &&
+		     !ieee80211_is_disassoc(hdr->frame_control) &&
+		     !ieee80211_is_action(hdr->frame_control)))
+		sta = NULL;
+
+	if (sta) {
+		if (iwl_mvm_defer_tx(mvm, sta, skb))
+			return;
+		if (iwl_mvm_tx_skb(mvm, skb, sta))
 			goto drop;
 		return;
 	}
@@ -354,6 +531,7 @@ static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw,
 {
 	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 	int ret;
+	bool tx_agg_ref = false;
 
 	IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n",
 		     sta->addr, tid, action);
@@ -361,6 +539,23 @@ static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw,
 	if (!(mvm->nvm_data->sku_cap_11n_enable))
 		return -EACCES;
 
+	/* return from D0i3 before starting a new Tx aggregation */
+	if (action == IEEE80211_AMPDU_TX_START) {
+		iwl_mvm_ref(mvm, IWL_MVM_REF_TX_AGG);
+		tx_agg_ref = true;
+
+		/*
+		 * wait synchronously until D0i3 exit to get the correct
+		 * sequence number for the tid
+		 */
+		if (!wait_event_timeout(mvm->d0i3_exit_waitq,
+			  !test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status), HZ)) {
+			WARN_ON_ONCE(1);
+			iwl_mvm_unref(mvm, IWL_MVM_REF_TX_AGG);
+			return -EIO;
+		}
+	}
+
 	mutex_lock(&mvm->mutex);
 
 	switch (action) {
@@ -398,6 +593,13 @@ static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw,
 	}
 	mutex_unlock(&mvm->mutex);
 
+	/*
+	 * If the tid is marked as started, we won't use it for offloaded
+	 * traffic on the next D0i3 entry. It's safe to unref.
+	 */
+	if (tx_agg_ref)
+		iwl_mvm_unref(mvm, IWL_MVM_REF_TX_AGG);
+
 	return ret;
 }
 
@@ -422,6 +624,15 @@ static void iwl_mvm_cleanup_iterator(void *data, u8 *mac,
 
 static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
 {
+#ifdef CONFIG_IWLWIFI_DEBUGFS
+	static char *env[] = { "DRIVER=iwlwifi", "EVENT=error_dump", NULL };
+
+	iwl_mvm_fw_error_dump(mvm);
+
+	/* notify the userspace about the error we had */
+	kobject_uevent_env(&mvm->hw->wiphy->dev.kobj, KOBJ_CHANGE, env);
+#endif
+
 	iwl_trans_stop_device(mvm->trans);
 
 	mvm->scan_status = IWL_MVM_SCAN_NONE;
@@ -434,6 +645,7 @@ static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
 		iwl_mvm_cleanup_iterator, mvm);
 
 	mvm->p2p_device_vif = NULL;
+	mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
 
 	iwl_mvm_reset_phy_ctxts(mvm);
 	memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
@@ -441,6 +653,10 @@ static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
 
 	ieee80211_wake_queues(mvm->hw);
 
+	/* cleanup all stale references (scan, roc), but keep the
+	 * ucode_down ref until reconfig is complete */
+	iwl_mvm_unref_all_except(mvm, IWL_MVM_REF_UCODE_DOWN);
+
 	mvm->vif_count = 0;
 	mvm->rx_ba_sessions = 0;
 }
@@ -470,11 +686,15 @@ static void iwl_mvm_mac_restart_complete(struct ieee80211_hw *hw)
 	mutex_lock(&mvm->mutex);
 
 	clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
+	iwl_mvm_d0i3_enable_tx(mvm, NULL);
 	ret = iwl_mvm_update_quotas(mvm, NULL);
 	if (ret)
 		IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
 			ret);
 
+	/* allow transport/FW low power modes */
+	iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN);
+
 	mutex_unlock(&mvm->mutex);
 }
 
@@ -482,9 +702,14 @@ static void iwl_mvm_mac_stop(struct ieee80211_hw *hw)
 {
 	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 
+	flush_work(&mvm->d0i3_exit_work);
 	flush_work(&mvm->async_handlers_wk);
 
 	mutex_lock(&mvm->mutex);
+
+	/* disallow low power states when the FW is down */
+	iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
+
 	/* async_handlers_wk is now blocked */
 
 	/*
@@ -510,14 +735,6 @@ static void iwl_mvm_mac_stop(struct ieee80211_hw *hw)
 	cancel_work_sync(&mvm->async_handlers_wk);
 }
 
-static void iwl_mvm_power_update_iterator(void *data, u8 *mac,
-					  struct ieee80211_vif *vif)
-{
-	struct iwl_mvm *mvm = data;
-
-	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;
@@ -585,7 +802,8 @@ static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
 	    vif->type == NL80211_IFTYPE_ADHOC) {
 		u32 qmask = iwl_mvm_mac_get_queues_mask(mvm, vif);
 		ret = iwl_mvm_allocate_int_sta(mvm, &mvmvif->bcast_sta,
-					       qmask);
+					       qmask,
+					       ieee80211_vif_type_p2p(vif));
 		if (ret) {
 			IWL_ERR(mvm, "Failed to allocate bcast sta\n");
 			goto out_release;
@@ -599,10 +817,12 @@ static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
 	if (ret)
 		goto out_release;
 
-	iwl_mvm_power_disable(mvm, vif);
+	ret = iwl_mvm_power_update_mac(mvm, vif);
+	if (ret)
+		goto out_release;
 
 	/* beacon filtering */
-	ret = iwl_mvm_disable_beacon_filter(mvm, vif);
+	ret = iwl_mvm_disable_beacon_filter(mvm, vif, CMD_SYNC);
 	if (ret)
 		goto out_remove_mac;
 
@@ -661,11 +881,6 @@ static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
 	if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
 		mvm->vif_count--;
 
-	/* TODO: remove this when legacy PM will be discarded */
-	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);
@@ -754,11 +969,7 @@ static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
 	if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE)
 		mvm->vif_count--;
 
-	/* TODO: remove this when legacy PM will be discarded */
-	ieee80211_iterate_active_interfaces(
-		mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
-		iwl_mvm_power_update_iterator, mvm);
-
+	iwl_mvm_power_update_mac(mvm, vif);
 	iwl_mvm_mac_ctxt_remove(mvm, vif);
 
 out_release:
@@ -876,6 +1087,156 @@ out:
 	*total_flags = 0;
 }
 
+#ifdef CONFIG_IWLWIFI_BCAST_FILTERING
+struct iwl_bcast_iter_data {
+	struct iwl_mvm *mvm;
+	struct iwl_bcast_filter_cmd *cmd;
+	u8 current_filter;
+};
+
+static void
+iwl_mvm_set_bcast_filter(struct ieee80211_vif *vif,
+			 const struct iwl_fw_bcast_filter *in_filter,
+			 struct iwl_fw_bcast_filter *out_filter)
+{
+	struct iwl_fw_bcast_filter_attr *attr;
+	int i;
+
+	memcpy(out_filter, in_filter, sizeof(*out_filter));
+
+	for (i = 0; i < ARRAY_SIZE(out_filter->attrs); i++) {
+		attr = &out_filter->attrs[i];
+
+		if (!attr->mask)
+			break;
+
+		switch (attr->reserved1) {
+		case cpu_to_le16(BC_FILTER_MAGIC_IP):
+			if (vif->bss_conf.arp_addr_cnt != 1) {
+				attr->mask = 0;
+				continue;
+			}
+
+			attr->val = vif->bss_conf.arp_addr_list[0];
+			break;
+		case cpu_to_le16(BC_FILTER_MAGIC_MAC):
+			attr->val = *(__be32 *)&vif->addr[2];
+			break;
+		default:
+			break;
+		}
+		attr->reserved1 = 0;
+		out_filter->num_attrs++;
+	}
+}
+
+static void iwl_mvm_bcast_filter_iterator(void *_data, u8 *mac,
+					  struct ieee80211_vif *vif)
+{
+	struct iwl_bcast_iter_data *data = _data;
+	struct iwl_mvm *mvm = data->mvm;
+	struct iwl_bcast_filter_cmd *cmd = data->cmd;
+	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
+	struct iwl_fw_bcast_mac *bcast_mac;
+	int i;
+
+	if (WARN_ON(mvmvif->id >= ARRAY_SIZE(cmd->macs)))
+		return;
+
+	bcast_mac = &cmd->macs[mvmvif->id];
+
+	/* enable filtering only for associated stations */
+	if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc)
+		return;
+
+	bcast_mac->default_discard = 1;
+
+	/* copy all configured filters */
+	for (i = 0; mvm->bcast_filters[i].attrs[0].mask; i++) {
+		/*
+		 * Make sure we don't exceed our filters limit.
+		 * if there is still a valid filter to be configured,
+		 * be on the safe side and just allow bcast for this mac.
+		 */
+		if (WARN_ON_ONCE(data->current_filter >=
+				 ARRAY_SIZE(cmd->filters))) {
+			bcast_mac->default_discard = 0;
+			bcast_mac->attached_filters = 0;
+			break;
+		}
+
+		iwl_mvm_set_bcast_filter(vif,
+					 &mvm->bcast_filters[i],
+					 &cmd->filters[data->current_filter]);
+
+		/* skip current filter if it contains no attributes */
+		if (!cmd->filters[data->current_filter].num_attrs)
+			continue;
+
+		/* attach the filter to current mac */
+		bcast_mac->attached_filters |=
+				cpu_to_le16(BIT(data->current_filter));
+
+		data->current_filter++;
+	}
+}
+
+bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm,
+				    struct iwl_bcast_filter_cmd *cmd)
+{
+	struct iwl_bcast_iter_data iter_data = {
+		.mvm = mvm,
+		.cmd = cmd,
+	};
+
+	memset(cmd, 0, sizeof(*cmd));
+	cmd->max_bcast_filters = ARRAY_SIZE(cmd->filters);
+	cmd->max_macs = ARRAY_SIZE(cmd->macs);
+
+#ifdef CONFIG_IWLWIFI_DEBUGFS
+	/* use debugfs filters/macs if override is configured */
+	if (mvm->dbgfs_bcast_filtering.override) {
+		memcpy(cmd->filters, &mvm->dbgfs_bcast_filtering.cmd.filters,
+		       sizeof(cmd->filters));
+		memcpy(cmd->macs, &mvm->dbgfs_bcast_filtering.cmd.macs,
+		       sizeof(cmd->macs));
+		return true;
+	}
+#endif
+
+	/* if no filters are configured, do nothing */
+	if (!mvm->bcast_filters)
+		return false;
+
+	/* configure and attach these filters for each associated sta vif */
+	ieee80211_iterate_active_interfaces(
+		mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
+		iwl_mvm_bcast_filter_iterator, &iter_data);
+
+	return true;
+}
+static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm,
+					  struct ieee80211_vif *vif)
+{
+	struct iwl_bcast_filter_cmd cmd;
+
+	if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING))
+		return 0;
+
+	if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd))
+		return 0;
+
+	return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, CMD_SYNC,
+				    sizeof(cmd), &cmd);
+}
+#else
+static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm,
+						 struct ieee80211_vif *vif)
+{
+	return 0;
+}
+#endif
+
 static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
 					     struct ieee80211_vif *vif,
 					     struct ieee80211_bss_conf *bss_conf,
@@ -928,6 +1289,8 @@ static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
 
 			iwl_mvm_sf_update(mvm, vif, false);
 			iwl_mvm_power_vif_assoc(mvm, vif);
+			if (vif->p2p)
+				iwl_mvm_ref(mvm, IWL_MVM_REF_P2P_CLIENT);
 		} else if (mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) {
 			/*
 			 * If update fails - SF might be running in associated
@@ -940,27 +1303,25 @@ static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
 			ret = iwl_mvm_rm_sta_id(mvm, vif, mvmvif->ap_sta_id);
 			if (ret)
 				IWL_ERR(mvm, "failed to remove AP station\n");
+
+			if (mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id)
+				mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
 			mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
 			/* remove quota for this interface */
 			ret = iwl_mvm_update_quotas(mvm, NULL);
 			if (ret)
 				IWL_ERR(mvm, "failed to update quotas\n");
+
+			if (vif->p2p)
+				iwl_mvm_unref(mvm, IWL_MVM_REF_P2P_CLIENT);
 		}
 
 		iwl_mvm_recalc_multicast(mvm);
+		iwl_mvm_configure_bcast_filter(mvm, vif);
 
 		/* reset rssi values */
 		mvmvif->bf_data.ave_beacon_signal = 0;
 
-		if (!(mvm->fw->ucode_capa.flags &
-					IWL_UCODE_TLV_FLAGS_PM_CMD_SUPPORT)) {
-			/* Workaround for FW bug, otherwise FW disables device
-			 * power save upon disassociation
-			 */
-			ret = iwl_mvm_power_update_mode(mvm, vif);
-			if (ret)
-				IWL_ERR(mvm, "failed to update power mode\n");
-		}
 		iwl_mvm_bt_coex_vif_change(mvm);
 		iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT,
 				    IEEE80211_SMPS_AUTOMATIC);
@@ -971,9 +1332,10 @@ static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
 		 */
 		iwl_mvm_remove_time_event(mvm, mvmvif,
 					  &mvmvif->time_event_data);
+		WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, CMD_SYNC));
 	} else if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS |
 			      BSS_CHANGED_QOS)) {
-		ret = iwl_mvm_power_update_mode(mvm, vif);
+		ret = iwl_mvm_power_update_mac(mvm, vif);
 		if (ret)
 			IWL_ERR(mvm, "failed to update power mode\n");
 	}
@@ -987,10 +1349,15 @@ static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
 		IWL_DEBUG_MAC80211(mvm, "cqm info_changed");
 		/* reset cqm events tracking */
 		mvmvif->bf_data.last_cqm_event = 0;
-		ret = iwl_mvm_update_beacon_filter(mvm, vif);
+		ret = iwl_mvm_update_beacon_filter(mvm, vif, false, CMD_SYNC);
 		if (ret)
 			IWL_ERR(mvm, "failed to update CQM thresholds\n");
 	}
+
+	if (changes & BSS_CHANGED_ARP_FILTER) {
+		IWL_DEBUG_MAC80211(mvm, "arp filter changed");
+		iwl_mvm_configure_bcast_filter(mvm, vif);
+	}
 }
 
 static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw,
@@ -1024,8 +1391,6 @@ static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw,
 	if (ret)
 		goto out_remove;
 
-	mvmvif->ap_ibss_active = true;
-
 	/* Send the bcast station. At this stage the TBTT and DTIM time events
 	 * are added and applied to the scheduler */
 	ret = iwl_mvm_send_bcast_sta(mvm, vif, &mvmvif->bcast_sta);
@@ -1036,8 +1401,7 @@ static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw,
 	mvmvif->ap_ibss_active = true;
 
 	/* power updated needs to be done before quotas */
-	mvm->bound_vif_cnt++;
-	iwl_mvm_power_update_binding(mvm, vif, true);
+	iwl_mvm_power_update_mac(mvm, vif);
 
 	ret = iwl_mvm_update_quotas(mvm, vif);
 	if (ret)
@@ -1047,14 +1411,15 @@ static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw,
 	if (vif->p2p && mvm->p2p_device_vif)
 		iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif);
 
+	iwl_mvm_ref(mvm, IWL_MVM_REF_AP_IBSS);
+
 	iwl_mvm_bt_coex_vif_change(mvm);
 
 	mutex_unlock(&mvm->mutex);
 	return 0;
 
 out_quota_failed:
-	mvm->bound_vif_cnt--;
-	iwl_mvm_power_update_binding(mvm, vif, false);
+	iwl_mvm_power_update_mac(mvm, vif);
 	mvmvif->ap_ibss_active = false;
 	iwl_mvm_send_rm_bcast_sta(mvm, &mvmvif->bcast_sta);
 out_unbind:
@@ -1080,6 +1445,8 @@ static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw,
 
 	iwl_mvm_bt_coex_vif_change(mvm);
 
+	iwl_mvm_unref(mvm, IWL_MVM_REF_AP_IBSS);
+
 	/* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
 	if (vif->p2p && mvm->p2p_device_vif)
 		iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif);
@@ -1088,8 +1455,7 @@ static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw,
 	iwl_mvm_send_rm_bcast_sta(mvm, &mvmvif->bcast_sta);
 	iwl_mvm_binding_remove_vif(mvm, vif);
 
-	mvm->bound_vif_cnt--;
-	iwl_mvm_power_update_binding(mvm, vif, false);
+	iwl_mvm_power_update_mac(mvm, vif);
 
 	iwl_mvm_mac_ctxt_remove(mvm, vif);
 
@@ -1103,26 +1469,20 @@ iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm,
 				 u32 changes)
 {
 	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
-	enum ieee80211_bss_change ht_change = BSS_CHANGED_ERP_CTS_PROT |
-					      BSS_CHANGED_HT |
-					      BSS_CHANGED_BANDWIDTH;
-	int ret;
 
 	/* Changes will be applied when the AP/IBSS is started */
 	if (!mvmvif->ap_ibss_active)
 		return;
 
-	if (changes & ht_change) {
-		ret = iwl_mvm_mac_ctxt_changed(mvm, vif);
-		if (ret)
-			IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
-	}
+	if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT |
+		       BSS_CHANGED_BANDWIDTH) &&
+	    iwl_mvm_mac_ctxt_changed(mvm, vif))
+		IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
 
 	/* Need to send a new beacon template to the FW */
-	if (changes & BSS_CHANGED_BEACON) {
-		if (iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
-			IWL_WARN(mvm, "Failed updating beacon data\n");
-	}
+	if (changes & BSS_CHANGED_BEACON &&
+	    iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
+		IWL_WARN(mvm, "Failed updating beacon data\n");
 }
 
 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
@@ -1162,13 +1522,30 @@ static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
 
 	mutex_lock(&mvm->mutex);
 
-	if (mvm->scan_status == IWL_MVM_SCAN_NONE)
-		ret = iwl_mvm_scan_request(mvm, vif, req);
-	else
+	switch (mvm->scan_status) {
+	case IWL_MVM_SCAN_SCHED:
+		ret = iwl_mvm_sched_scan_stop(mvm);
+		if (ret) {
+			ret = -EBUSY;
+			goto out;
+		}
+		break;
+	case IWL_MVM_SCAN_NONE:
+		break;
+	default:
 		ret = -EBUSY;
+		goto out;
+	}
 
-	mutex_unlock(&mvm->mutex);
+	iwl_mvm_ref(mvm, IWL_MVM_REF_SCAN);
 
+	ret = iwl_mvm_scan_request(mvm, vif, req);
+	if (ret)
+		iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN);
+out:
+	mutex_unlock(&mvm->mutex);
+	/* make sure to flush the Rx handler before the next scan arrives */
+	iwl_mvm_wait_for_async_handlers(mvm);
 	return ret;
 }
 
@@ -1186,20 +1563,32 @@ static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
 
 static void
 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
-				  struct ieee80211_sta *sta, u16 tid,
+				  struct ieee80211_sta *sta, u16 tids,
 				  int num_frames,
 				  enum ieee80211_frame_release_type reason,
 				  bool more_data)
 {
 	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 
-	/* TODO: how do we tell the fw to send frames for a specific TID */
+	/* Called when we need to transmit (a) frame(s) from mac80211 */
 
-	/*
-	 * The fw will send EOSP notification when the last frame will be
-	 * transmitted.
-	 */
-	iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames);
+	iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
+					  tids, more_data, false);
+}
+
+static void
+iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw,
+				    struct ieee80211_sta *sta, u16 tids,
+				    int num_frames,
+				    enum ieee80211_frame_release_type reason,
+				    bool more_data)
+{
+	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
+
+	/* Called when we need to transmit (a) frame(s) from agg queue */
+
+	iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
+					  tids, more_data, true);
 }
 
 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
@@ -1209,11 +1598,25 @@ static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
 {
 	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 	struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
+	int tid;
 
 	switch (cmd) {
 	case STA_NOTIFY_SLEEP:
 		if (atomic_read(&mvm->pending_frames[mvmsta->sta_id]) > 0)
 			ieee80211_sta_block_awake(hw, sta, true);
+		spin_lock_bh(&mvmsta->lock);
+		for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
+			struct iwl_mvm_tid_data *tid_data;
+
+			tid_data = &mvmsta->tid_data[tid];
+			if (tid_data->state != IWL_AGG_ON &&
+			    tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA)
+				continue;
+			if (iwl_mvm_tid_queued(tid_data) == 0)
+				continue;
+			ieee80211_sta_set_buffered(sta, tid, true);
+		}
+		spin_unlock_bh(&mvmsta->lock);
 		/*
 		 * The fw updates the STA to be asleep. Tx packets on the Tx
 		 * queues to this station will not be transmitted. The fw will
@@ -1304,12 +1707,14 @@ static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
 	} else if (old_state == IEEE80211_STA_ASSOC &&
 		   new_state == IEEE80211_STA_AUTHORIZED) {
 		/* enable beacon filtering */
-		WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif));
+		if (vif->bss_conf.dtim_period)
+			WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif,
+							     CMD_SYNC));
 		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));
+		WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif, CMD_SYNC));
 		ret = 0;
 	} else if (old_state == IEEE80211_STA_ASSOC &&
 		   new_state == IEEE80211_STA_AUTH) {
@@ -1401,9 +1806,26 @@ static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw,
 
 	mutex_lock(&mvm->mutex);
 
-	if (mvm->scan_status != IWL_MVM_SCAN_NONE) {
-		IWL_DEBUG_SCAN(mvm,
-			       "SCHED SCAN request during internal scan - abort\n");
+	switch (mvm->scan_status) {
+	case IWL_MVM_SCAN_OS:
+		IWL_DEBUG_SCAN(mvm, "Stopping previous scan for sched_scan\n");
+		ret = iwl_mvm_cancel_scan(mvm);
+		if (ret) {
+			ret = -EBUSY;
+			goto out;
+		}
+
+		/*
+		 * iwl_mvm_rx_scan_complete() will be called soon but will
+		 * not reset the scan status as it won't be IWL_MVM_SCAN_OS
+		 * any more since we queue the next scan immediately (below).
+		 * We make sure it is called before the next scan starts by
+		 * flushing the async-handlers work.
+		 */
+		break;
+	case IWL_MVM_SCAN_NONE:
+		break;
+	default:
 		ret = -EBUSY;
 		goto out;
 	}
@@ -1425,17 +1847,23 @@ err:
 	mvm->scan_status = IWL_MVM_SCAN_NONE;
 out:
 	mutex_unlock(&mvm->mutex);
+	/* make sure to flush the Rx handler before the next scan arrives */
+	iwl_mvm_wait_for_async_handlers(mvm);
 	return ret;
 }
 
-static void iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw,
-					struct ieee80211_vif *vif)
+static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw,
+				       struct ieee80211_vif *vif)
 {
 	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
+	int ret;
 
 	mutex_lock(&mvm->mutex);
-	iwl_mvm_sched_scan_stop(mvm);
+	ret = iwl_mvm_sched_scan_stop(mvm);
 	mutex_unlock(&mvm->mutex);
+	iwl_mvm_wait_for_async_handlers(mvm);
+
+	return ret;
 }
 
 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
@@ -1773,8 +2201,7 @@ static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
 	 * Power state must be updated before quotas,
 	 * otherwise fw will complain.
 	 */
-	mvm->bound_vif_cnt++;
-	iwl_mvm_power_update_binding(mvm, vif, true);
+	iwl_mvm_power_update_mac(mvm, vif);
 
 	/* Setting the quota at this stage is only required for monitor
 	 * interfaces. For the other types, the bss_info changed flow
@@ -1791,8 +2218,7 @@ static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
 
  out_remove_binding:
 	iwl_mvm_binding_remove_vif(mvm, vif);
-	mvm->bound_vif_cnt--;
-	iwl_mvm_power_update_binding(mvm, vif, false);
+	iwl_mvm_power_update_mac(mvm, vif);
  out_unlock:
 	mutex_unlock(&mvm->mutex);
 	if (ret)
@@ -1824,8 +2250,7 @@ static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
 	}
 
 	iwl_mvm_binding_remove_vif(mvm, vif);
-	mvm->bound_vif_cnt--;
-	iwl_mvm_power_update_binding(mvm, vif, false);
+	iwl_mvm_power_update_mac(mvm, vif);
 
 out_unlock:
 	mvmvif->phy_ctxt = NULL;
@@ -1892,8 +2317,9 @@ static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm,
 			return -EINVAL;
 
 		if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]))
-			return iwl_mvm_enable_beacon_filter(mvm, vif);
-		return iwl_mvm_disable_beacon_filter(mvm, vif);
+			return iwl_mvm_enable_beacon_filter(mvm, vif,
+							    CMD_SYNC);
+		return iwl_mvm_disable_beacon_filter(mvm, vif, CMD_SYNC);
 	}
 
 	return -EOPNOTSUPP;
@@ -1914,7 +2340,7 @@ static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw,
 }
 #endif
 
-struct ieee80211_ops iwl_mvm_hw_ops = {
+const struct ieee80211_ops iwl_mvm_hw_ops = {
 	.tx = iwl_mvm_mac_tx,
 	.ampdu_action = iwl_mvm_mac_ampdu_action,
 	.start = iwl_mvm_mac_start,
@@ -1932,6 +2358,7 @@ struct ieee80211_ops iwl_mvm_hw_ops = {
 	.sta_state = iwl_mvm_mac_sta_state,
 	.sta_notify = iwl_mvm_mac_sta_notify,
 	.allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
+	.release_buffered_frames = iwl_mvm_mac_release_buffered_frames,
 	.set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
 	.sta_rc_update = iwl_mvm_sta_rc_update,
 	.conf_tx = iwl_mvm_mac_conf_tx,