Adding upstream version 5.10.209.upstream/5.10.209upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 1259 insertions, 0 deletions

diff --git a/net/mac80211/status.c b/net/mac80211/status.c
new file mode 100644
index 000000000..348561075
--- /dev/null
+++ b/net/mac80211/status.c
@@ -0,0 +1,1259 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright 2002-2005, Instant802 Networks, Inc.
+ * Copyright 2005-2006, Devicescape Software, Inc.
+ * Copyright 2006-2007	Jiri Benc <jbenc@suse.cz>
+ * Copyright 2008-2010	Johannes Berg <johannes@sipsolutions.net>
+ * Copyright 2013-2014  Intel Mobile Communications GmbH
+ */
+
+#include <linux/export.h>
+#include <linux/etherdevice.h>
+#include <net/mac80211.h>
+#include <asm/unaligned.h>
+#include "ieee80211_i.h"
+#include "rate.h"
+#include "mesh.h"
+#include "led.h"
+#include "wme.h"
+
+
+void ieee80211_tx_status_irqsafe(struct ieee80211_hw *hw,
+				 struct sk_buff *skb)
+{
+	struct ieee80211_local *local = hw_to_local(hw);
+	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
+	int tmp;
+
+	skb->pkt_type = IEEE80211_TX_STATUS_MSG;
+	skb_queue_tail(info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS ?
+		       &local->skb_queue : &local->skb_queue_unreliable, skb);
+	tmp = skb_queue_len(&local->skb_queue) +
+		skb_queue_len(&local->skb_queue_unreliable);
+	while (tmp > IEEE80211_IRQSAFE_QUEUE_LIMIT &&
+	       (skb = skb_dequeue(&local->skb_queue_unreliable))) {
+		ieee80211_free_txskb(hw, skb);
+		tmp--;
+		I802_DEBUG_INC(local->tx_status_drop);
+	}
+	tasklet_schedule(&local->tasklet);
+}
+EXPORT_SYMBOL(ieee80211_tx_status_irqsafe);
+
+static void ieee80211_handle_filtered_frame(struct ieee80211_local *local,
+					    struct sta_info *sta,
+					    struct sk_buff *skb)
+{
+	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
+	struct ieee80211_hdr *hdr = (void *)skb->data;
+	int ac;
+
+	if (info->flags & (IEEE80211_TX_CTL_NO_PS_BUFFER |
+			   IEEE80211_TX_CTL_AMPDU |
+			   IEEE80211_TX_CTL_HW_80211_ENCAP)) {
+		ieee80211_free_txskb(&local->hw, skb);
+		return;
+	}
+
+	/*
+	 * This skb 'survived' a round-trip through the driver, and
+	 * hopefully the driver didn't mangle it too badly. However,
+	 * we can definitely not rely on the control information
+	 * being correct. Clear it so we don't get junk there, and
+	 * indicate that it needs new processing, but must not be
+	 * modified/encrypted again.
+	 */
+	memset(&info->control, 0, sizeof(info->control));
+
+	info->control.jiffies = jiffies;
+	info->control.vif = &sta->sdata->vif;
+	info->control.flags |= IEEE80211_TX_INTCFL_NEED_TXPROCESSING;
+	info->flags |= IEEE80211_TX_INTFL_RETRANSMISSION;
+	info->flags &= ~IEEE80211_TX_TEMPORARY_FLAGS;
+
+	sta->status_stats.filtered++;
+
+	/*
+	 * Clear more-data bit on filtered frames, it might be set
+	 * but later frames might time out so it might have to be
+	 * clear again ... It's all rather unlikely (this frame
+	 * should time out first, right?) but let's not confuse
+	 * peers unnecessarily.
+	 */
+	if (hdr->frame_control & cpu_to_le16(IEEE80211_FCTL_MOREDATA))
+		hdr->frame_control &= ~cpu_to_le16(IEEE80211_FCTL_MOREDATA);
+
+	if (ieee80211_is_data_qos(hdr->frame_control)) {
+		u8 *p = ieee80211_get_qos_ctl(hdr);
+		int tid = *p & IEEE80211_QOS_CTL_TID_MASK;
+
+		/*
+		 * Clear EOSP if set, this could happen e.g.
+		 * if an absence period (us being a P2P GO)
+		 * shortens the SP.
+		 */
+		if (*p & IEEE80211_QOS_CTL_EOSP)
+			*p &= ~IEEE80211_QOS_CTL_EOSP;
+		ac = ieee80211_ac_from_tid(tid);
+	} else {
+		ac = IEEE80211_AC_BE;
+	}
+
+	/*
+	 * Clear the TX filter mask for this STA when sending the next
+	 * packet. If the STA went to power save mode, this will happen
+	 * when it wakes up for the next time.
+	 */
+	set_sta_flag(sta, WLAN_STA_CLEAR_PS_FILT);
+	ieee80211_clear_fast_xmit(sta);
+
+	/*
+	 * This code races in the following way:
+	 *
+	 *  (1) STA sends frame indicating it will go to sleep and does so
+	 *  (2) hardware/firmware adds STA to filter list, passes frame up
+	 *  (3) hardware/firmware processes TX fifo and suppresses a frame
+	 *  (4) we get TX status before having processed the frame and
+	 *	knowing that the STA has gone to sleep.
+	 *
+	 * This is actually quite unlikely even when both those events are
+	 * processed from interrupts coming in quickly after one another or
+	 * even at the same time because we queue both TX status events and
+	 * RX frames to be processed by a tasklet and process them in the
+	 * same order that they were received or TX status last. Hence, there
+	 * is no race as long as the frame RX is processed before the next TX
+	 * status, which drivers can ensure, see below.
+	 *
+	 * Note that this can only happen if the hardware or firmware can
+	 * actually add STAs to the filter list, if this is done by the
+	 * driver in response to set_tim() (which will only reduce the race
+	 * this whole filtering tries to solve, not completely solve it)
+	 * this situation cannot happen.
+	 *
+	 * To completely solve this race drivers need to make sure that they
+	 *  (a) don't mix the irq-safe/not irq-safe TX status/RX processing
+	 *	functions and
+	 *  (b) always process RX events before TX status events if ordering
+	 *      can be unknown, for example with different interrupt status
+	 *	bits.
+	 *  (c) if PS mode transitions are manual (i.e. the flag
+	 *      %IEEE80211_HW_AP_LINK_PS is set), always process PS state
+	 *      changes before calling TX status events if ordering can be
+	 *	unknown.
+	 */
+	if (test_sta_flag(sta, WLAN_STA_PS_STA) &&
+	    skb_queue_len(&sta->tx_filtered[ac]) < STA_MAX_TX_BUFFER) {
+		skb_queue_tail(&sta->tx_filtered[ac], skb);
+		sta_info_recalc_tim(sta);
+
+		if (!timer_pending(&local->sta_cleanup))
+			mod_timer(&local->sta_cleanup,
+				  round_jiffies(jiffies +
+						STA_INFO_CLEANUP_INTERVAL));
+		return;
+	}
+
+	if (!test_sta_flag(sta, WLAN_STA_PS_STA) &&
+	    !(info->flags & IEEE80211_TX_INTFL_RETRIED)) {
+		/* Software retry the packet once */
+		info->flags |= IEEE80211_TX_INTFL_RETRIED;
+		ieee80211_add_pending_skb(local, skb);
+		return;
+	}
+
+	ps_dbg_ratelimited(sta->sdata,
+			   "dropped TX filtered frame, queue_len=%d PS=%d @%lu\n",
+			   skb_queue_len(&sta->tx_filtered[ac]),
+			   !!test_sta_flag(sta, WLAN_STA_PS_STA), jiffies);
+	ieee80211_free_txskb(&local->hw, skb);
+}
+
+static void ieee80211_check_pending_bar(struct sta_info *sta, u8 *addr, u8 tid)
+{
+	struct tid_ampdu_tx *tid_tx;
+
+	tid_tx = rcu_dereference(sta->ampdu_mlme.tid_tx[tid]);
+	if (!tid_tx || !tid_tx->bar_pending)
+		return;
+
+	tid_tx->bar_pending = false;
+	ieee80211_send_bar(&sta->sdata->vif, addr, tid, tid_tx->failed_bar_ssn);
+}
+
+static void ieee80211_frame_acked(struct sta_info *sta, struct sk_buff *skb)
+{
+	struct ieee80211_mgmt *mgmt = (void *) skb->data;
+	struct ieee80211_local *local = sta->local;
+	struct ieee80211_sub_if_data *sdata = sta->sdata;
+
+	if (ieee80211_is_data_qos(mgmt->frame_control)) {
+		struct ieee80211_hdr *hdr = (void *) skb->data;
+		u8 *qc = ieee80211_get_qos_ctl(hdr);
+		u16 tid = qc[0] & 0xf;
+
+		ieee80211_check_pending_bar(sta, hdr->addr1, tid);
+	}
+
+	if (ieee80211_is_action(mgmt->frame_control) &&
+	    !ieee80211_has_protected(mgmt->frame_control) &&
+	    mgmt->u.action.category == WLAN_CATEGORY_HT &&
+	    mgmt->u.action.u.ht_smps.action == WLAN_HT_ACTION_SMPS &&
+	    ieee80211_sdata_running(sdata)) {
+		enum ieee80211_smps_mode smps_mode;
+
+		switch (mgmt->u.action.u.ht_smps.smps_control) {
+		case WLAN_HT_SMPS_CONTROL_DYNAMIC:
+			smps_mode = IEEE80211_SMPS_DYNAMIC;
+			break;
+		case WLAN_HT_SMPS_CONTROL_STATIC:
+			smps_mode = IEEE80211_SMPS_STATIC;
+			break;
+		case WLAN_HT_SMPS_CONTROL_DISABLED:
+		default: /* shouldn't happen since we don't send that */
+			smps_mode = IEEE80211_SMPS_OFF;
+			break;
+		}
+
+		if (sdata->vif.type == NL80211_IFTYPE_STATION) {
+			/*
+			 * This update looks racy, but isn't -- if we come
+			 * here we've definitely got a station that we're
+			 * talking to, and on a managed interface that can
+			 * only be the AP. And the only other place updating
+			 * this variable in managed mode is before association.
+			 */
+			sdata->smps_mode = smps_mode;
+			ieee80211_queue_work(&local->hw, &sdata->recalc_smps);
+		} else if (sdata->vif.type == NL80211_IFTYPE_AP ||
+			   sdata->vif.type == NL80211_IFTYPE_AP_VLAN) {
+			sta->known_smps_mode = smps_mode;
+		}
+	}
+}
+
+static void ieee80211_set_bar_pending(struct sta_info *sta, u8 tid, u16 ssn)
+{
+	struct tid_ampdu_tx *tid_tx;
+
+	tid_tx = rcu_dereference(sta->ampdu_mlme.tid_tx[tid]);
+	if (!tid_tx)
+		return;
+
+	tid_tx->failed_bar_ssn = ssn;
+	tid_tx->bar_pending = true;
+}
+
+static int ieee80211_tx_radiotap_len(struct ieee80211_tx_info *info,
+				     struct ieee80211_tx_status *status)
+{
+	int len = sizeof(struct ieee80211_radiotap_header);
+
+	/* IEEE80211_RADIOTAP_RATE rate */
+	if (status && status->rate && !(status->rate->flags &
+					(RATE_INFO_FLAGS_MCS |
+					 RATE_INFO_FLAGS_DMG |
+					 RATE_INFO_FLAGS_EDMG |
+					 RATE_INFO_FLAGS_VHT_MCS |
+					 RATE_INFO_FLAGS_HE_MCS)))
+		len += 2;
+	else if (info->status.rates[0].idx >= 0 &&
+		 !(info->status.rates[0].flags &
+		   (IEEE80211_TX_RC_MCS | IEEE80211_TX_RC_VHT_MCS)))
+		len += 2;
+
+	/* IEEE80211_RADIOTAP_TX_FLAGS */
+	len += 2;
+
+	/* IEEE80211_RADIOTAP_DATA_RETRIES */
+	len += 1;
+
+	/* IEEE80211_RADIOTAP_MCS
+	 * IEEE80211_RADIOTAP_VHT */
+	if (status && status->rate) {
+		if (status->rate->flags & RATE_INFO_FLAGS_MCS)
+			len += 3;
+		else if (status->rate->flags & RATE_INFO_FLAGS_VHT_MCS)
+			len = ALIGN(len, 2) + 12;
+		else if (status->rate->flags & RATE_INFO_FLAGS_HE_MCS)
+			len = ALIGN(len, 2) + 12;
+	} else if (info->status.rates[0].idx >= 0) {
+		if (info->status.rates[0].flags & IEEE80211_TX_RC_MCS)
+			len += 3;
+		else if (info->status.rates[0].flags & IEEE80211_TX_RC_VHT_MCS)
+			len = ALIGN(len, 2) + 12;
+	}
+
+	return len;
+}
+
+static void
+ieee80211_add_tx_radiotap_header(struct ieee80211_local *local,
+				 struct ieee80211_supported_band *sband,
+				 struct sk_buff *skb, int retry_count,
+				 int rtap_len, int shift,
+				 struct ieee80211_tx_status *status)
+{
+	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
+	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
+	struct ieee80211_radiotap_header *rthdr;
+	unsigned char *pos;
+	u16 legacy_rate = 0;
+	u16 txflags;
+
+	rthdr = skb_push(skb, rtap_len);
+
+	memset(rthdr, 0, rtap_len);
+	rthdr->it_len = cpu_to_le16(rtap_len);
+	rthdr->it_present =
+		cpu_to_le32((1 << IEEE80211_RADIOTAP_TX_FLAGS) |
+			    (1 << IEEE80211_RADIOTAP_DATA_RETRIES));
+	pos = (unsigned char *)(rthdr + 1);
+
+	/*
+	 * XXX: Once radiotap gets the bitmap reset thing the vendor
+	 *	extensions proposal contains, we can actually report
+	 *	the whole set of tries we did.
+	 */
+
+	/* IEEE80211_RADIOTAP_RATE */
+
+	if (status && status->rate) {
+		if (!(status->rate->flags & (RATE_INFO_FLAGS_MCS |
+					     RATE_INFO_FLAGS_DMG |
+					     RATE_INFO_FLAGS_EDMG |
+					     RATE_INFO_FLAGS_VHT_MCS |
+					     RATE_INFO_FLAGS_HE_MCS)))
+			legacy_rate = status->rate->legacy;
+	} else if (info->status.rates[0].idx >= 0 &&
+		 !(info->status.rates[0].flags & (IEEE80211_TX_RC_MCS |
+						  IEEE80211_TX_RC_VHT_MCS)))
+		legacy_rate =
+			sband->bitrates[info->status.rates[0].idx].bitrate;
+
+	if (legacy_rate) {
+		rthdr->it_present |= cpu_to_le32(1 << IEEE80211_RADIOTAP_RATE);
+		*pos = DIV_ROUND_UP(legacy_rate, 5 * (1 << shift));
+		/* padding for tx flags */
+		pos += 2;
+	}
+
+	/* IEEE80211_RADIOTAP_TX_FLAGS */
+	txflags = 0;
+	if (!(info->flags & IEEE80211_TX_STAT_ACK) &&
+	    !is_multicast_ether_addr(hdr->addr1))
+		txflags |= IEEE80211_RADIOTAP_F_TX_FAIL;
+
+	if (info->status.rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT)
+		txflags |= IEEE80211_RADIOTAP_F_TX_CTS;
+	if (info->status.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS)
+		txflags |= IEEE80211_RADIOTAP_F_TX_RTS;
+
+	put_unaligned_le16(txflags, pos);
+	pos += 2;
+
+	/* IEEE80211_RADIOTAP_DATA_RETRIES */
+	/* for now report the total retry_count */
+	*pos = retry_count;
+	pos++;
+
+	if (status && status->rate &&
+	    (status->rate->flags & RATE_INFO_FLAGS_MCS)) {
+		rthdr->it_present |= cpu_to_le32(1 << IEEE80211_RADIOTAP_MCS);
+		pos[0] = IEEE80211_RADIOTAP_MCS_HAVE_MCS |
+			 IEEE80211_RADIOTAP_MCS_HAVE_GI |
+			 IEEE80211_RADIOTAP_MCS_HAVE_BW;
+		if (status->rate->flags & RATE_INFO_FLAGS_SHORT_GI)
+			pos[1] |= IEEE80211_RADIOTAP_MCS_SGI;
+		if (status->rate->bw == RATE_INFO_BW_40)
+			pos[1] |= IEEE80211_RADIOTAP_MCS_BW_40;
+		pos[2] = status->rate->mcs;
+		pos += 3;
+	} else if (status && status->rate &&
+		   (status->rate->flags & RATE_INFO_FLAGS_VHT_MCS)) {
+		u16 known = local->hw.radiotap_vht_details &
+			(IEEE80211_RADIOTAP_VHT_KNOWN_GI |
+			 IEEE80211_RADIOTAP_VHT_KNOWN_BANDWIDTH);
+
+		rthdr->it_present |= cpu_to_le32(1 << IEEE80211_RADIOTAP_VHT);
+
+		/* required alignment from rthdr */
+		pos = (u8 *)rthdr + ALIGN(pos - (u8 *)rthdr, 2);
+
+		/* u16 known - IEEE80211_RADIOTAP_VHT_KNOWN_* */
+		put_unaligned_le16(known, pos);
+		pos += 2;
+
+		/* u8 flags - IEEE80211_RADIOTAP_VHT_FLAG_* */
+		if (status->rate->flags & RATE_INFO_FLAGS_SHORT_GI)
+			*pos |= IEEE80211_RADIOTAP_VHT_FLAG_SGI;
+		pos++;
+
+		/* u8 bandwidth */
+		switch (status->rate->bw) {
+		case RATE_INFO_BW_160:
+			*pos = 11;
+			break;
+		case RATE_INFO_BW_80:
+			*pos = 4;
+			break;
+		case RATE_INFO_BW_40:
+			*pos = 1;
+			break;
+		default:
+			*pos = 0;
+			break;
+		}
+		pos++;
+
+		/* u8 mcs_nss[4] */
+		*pos = (status->rate->mcs << 4) | status->rate->nss;
+		pos += 4;
+
+		/* u8 coding */
+		pos++;
+		/* u8 group_id */
+		pos++;
+		/* u16 partial_aid */
+		pos += 2;
+	} else if (status && status->rate &&
+		   (status->rate->flags & RATE_INFO_FLAGS_HE_MCS)) {
+		struct ieee80211_radiotap_he *he;
+
+		rthdr->it_present |= cpu_to_le32(1 << IEEE80211_RADIOTAP_HE);
+
+		/* required alignment from rthdr */
+		pos = (u8 *)rthdr + ALIGN(pos - (u8 *)rthdr, 2);
+		he = (struct ieee80211_radiotap_he *)pos;
+
+		he->data1 = cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_FORMAT_SU |
+					IEEE80211_RADIOTAP_HE_DATA1_DATA_MCS_KNOWN |
+					IEEE80211_RADIOTAP_HE_DATA1_DATA_DCM_KNOWN |
+					IEEE80211_RADIOTAP_HE_DATA1_BW_RU_ALLOC_KNOWN);
+
+		he->data2 = cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA2_GI_KNOWN);
+
+#define HE_PREP(f, val) le16_encode_bits(val, IEEE80211_RADIOTAP_HE_##f)
+
+		he->data6 |= HE_PREP(DATA6_NSTS, status->rate->nss);
+
+#define CHECK_GI(s) \
+	BUILD_BUG_ON(IEEE80211_RADIOTAP_HE_DATA5_GI_##s != \
+	(int)NL80211_RATE_INFO_HE_GI_##s)
+
+		CHECK_GI(0_8);
+		CHECK_GI(1_6);
+		CHECK_GI(3_2);
+
+		he->data3 |= HE_PREP(DATA3_DATA_MCS, status->rate->mcs);
+		he->data3 |= HE_PREP(DATA3_DATA_DCM, status->rate->he_dcm);
+
+		he->data5 |= HE_PREP(DATA5_GI, status->rate->he_gi);
+
+		switch (status->rate->bw) {
+		case RATE_INFO_BW_20:
+			he->data5 |= HE_PREP(DATA5_DATA_BW_RU_ALLOC,
+					     IEEE80211_RADIOTAP_HE_DATA5_DATA_BW_RU_ALLOC_20MHZ);
+			break;
+		case RATE_INFO_BW_40:
+			he->data5 |= HE_PREP(DATA5_DATA_BW_RU_ALLOC,
+					     IEEE80211_RADIOTAP_HE_DATA5_DATA_BW_RU_ALLOC_40MHZ);
+			break;
+		case RATE_INFO_BW_80:
+			he->data5 |= HE_PREP(DATA5_DATA_BW_RU_ALLOC,
+					     IEEE80211_RADIOTAP_HE_DATA5_DATA_BW_RU_ALLOC_80MHZ);
+			break;
+		case RATE_INFO_BW_160:
+			he->data5 |= HE_PREP(DATA5_DATA_BW_RU_ALLOC,
+					     IEEE80211_RADIOTAP_HE_DATA5_DATA_BW_RU_ALLOC_160MHZ);
+			break;
+		case RATE_INFO_BW_HE_RU:
+#define CHECK_RU_ALLOC(s) \
+	BUILD_BUG_ON(IEEE80211_RADIOTAP_HE_DATA5_DATA_BW_RU_ALLOC_##s##T != \
+	NL80211_RATE_INFO_HE_RU_ALLOC_##s + 4)
+
+			CHECK_RU_ALLOC(26);
+			CHECK_RU_ALLOC(52);
+			CHECK_RU_ALLOC(106);
+			CHECK_RU_ALLOC(242);
+			CHECK_RU_ALLOC(484);
+			CHECK_RU_ALLOC(996);
+			CHECK_RU_ALLOC(2x996);
+
+			he->data5 |= HE_PREP(DATA5_DATA_BW_RU_ALLOC,
+					     status->rate->he_ru_alloc + 4);
+			break;
+		default:
+			WARN_ONCE(1, "Invalid SU BW %d\n", status->rate->bw);
+		}
+
+		pos += sizeof(struct ieee80211_radiotap_he);
+	}
+
+	if ((status && status->rate) || info->status.rates[0].idx < 0)
+		return;
+
+	/* IEEE80211_RADIOTAP_MCS
+	 * IEEE80211_RADIOTAP_VHT */
+	if (info->status.rates[0].flags & IEEE80211_TX_RC_MCS) {
+		rthdr->it_present |= cpu_to_le32(1 << IEEE80211_RADIOTAP_MCS);
+		pos[0] = IEEE80211_RADIOTAP_MCS_HAVE_MCS |
+			 IEEE80211_RADIOTAP_MCS_HAVE_GI |
+			 IEEE80211_RADIOTAP_MCS_HAVE_BW;
+		if (info->status.rates[0].flags & IEEE80211_TX_RC_SHORT_GI)
+			pos[1] |= IEEE80211_RADIOTAP_MCS_SGI;
+		if (info->status.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
+			pos[1] |= IEEE80211_RADIOTAP_MCS_BW_40;
+		if (info->status.rates[0].flags & IEEE80211_TX_RC_GREEN_FIELD)
+			pos[1] |= IEEE80211_RADIOTAP_MCS_FMT_GF;
+		pos[2] = info->status.rates[0].idx;
+		pos += 3;
+	} else if (info->status.rates[0].flags & IEEE80211_TX_RC_VHT_MCS) {
+		u16 known = local->hw.radiotap_vht_details &
+			(IEEE80211_RADIOTAP_VHT_KNOWN_GI |
+			 IEEE80211_RADIOTAP_VHT_KNOWN_BANDWIDTH);
+
+		rthdr->it_present |= cpu_to_le32(1 << IEEE80211_RADIOTAP_VHT);
+
+		/* required alignment from rthdr */
+		pos = (u8 *)rthdr + ALIGN(pos - (u8 *)rthdr, 2);
+
+		/* u16 known - IEEE80211_RADIOTAP_VHT_KNOWN_* */
+		put_unaligned_le16(known, pos);
+		pos += 2;
+
+		/* u8 flags - IEEE80211_RADIOTAP_VHT_FLAG_* */
+		if (info->status.rates[0].flags & IEEE80211_TX_RC_SHORT_GI)
+			*pos |= IEEE80211_RADIOTAP_VHT_FLAG_SGI;
+		pos++;
+
+		/* u8 bandwidth */
+		if (info->status.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
+			*pos = 1;
+		else if (info->status.rates[0].flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
+			*pos = 4;
+		else if (info->status.rates[0].flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
+			*pos = 11;
+		else /* IEEE80211_TX_RC_{20_MHZ_WIDTH,FIXME:DUP_DATA} */
+			*pos = 0;
+		pos++;
+
+		/* u8 mcs_nss[4] */
+		*pos = (ieee80211_rate_get_vht_mcs(&info->status.rates[0]) << 4) |
+			ieee80211_rate_get_vht_nss(&info->status.rates[0]);
+		pos += 4;
+
+		/* u8 coding */
+		pos++;
+		/* u8 group_id */
+		pos++;
+		/* u16 partial_aid */
+		pos += 2;
+	}
+}
+
+/*
+ * Handles the tx for TDLS teardown frames.
+ * If the frame wasn't ACKed by the peer - it will be re-sent through the AP
+ */
+static void ieee80211_tdls_td_tx_handle(struct ieee80211_local *local,
+					struct ieee80211_sub_if_data *sdata,
+					struct sk_buff *skb, u32 flags)
+{
+	struct sk_buff *teardown_skb;
+	struct sk_buff *orig_teardown_skb;
+	bool is_teardown = false;
+
+	/* Get the teardown data we need and free the lock */
+	spin_lock(&sdata->u.mgd.teardown_lock);
+	teardown_skb = sdata->u.mgd.teardown_skb;
+	orig_teardown_skb = sdata->u.mgd.orig_teardown_skb;
+	if ((skb == orig_teardown_skb) && teardown_skb) {
+		sdata->u.mgd.teardown_skb = NULL;
+		sdata->u.mgd.orig_teardown_skb = NULL;
+		is_teardown = true;
+	}
+	spin_unlock(&sdata->u.mgd.teardown_lock);
+
+	if (is_teardown) {
+		/* This mechanism relies on being able to get ACKs */
+		WARN_ON(!ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS));
+
+		/* Check if peer has ACKed */
+		if (flags & IEEE80211_TX_STAT_ACK) {
+			dev_kfree_skb_any(teardown_skb);
+		} else {
+			tdls_dbg(sdata,
+				 "TDLS Resending teardown through AP\n");
+
+			ieee80211_subif_start_xmit(teardown_skb, skb->dev);
+		}
+	}
+}
+
+static struct ieee80211_sub_if_data *
+ieee80211_sdata_from_skb(struct ieee80211_local *local, struct sk_buff *skb)
+{
+	struct ieee80211_sub_if_data *sdata;
+
+	if (skb->dev) {
+		list_for_each_entry_rcu(sdata, &local->interfaces, list) {
+			if (!sdata->dev)
+				continue;
+
+			if (skb->dev == sdata->dev)
+				return sdata;
+		}
+
+		return NULL;
+	}
+
+	return rcu_dereference(local->p2p_sdata);
+}
+
+static void ieee80211_report_ack_skb(struct ieee80211_local *local,
+				     struct ieee80211_tx_info *info,
+				     bool acked, bool dropped)
+{
+	struct sk_buff *skb;
+	unsigned long flags;
+
+	spin_lock_irqsave(&local->ack_status_lock, flags);
+	skb = idr_remove(&local->ack_status_frames, info->ack_frame_id);
+	spin_unlock_irqrestore(&local->ack_status_lock, flags);
+
+	if (!skb)
+		return;
+
+	if (info->flags & IEEE80211_TX_INTFL_NL80211_FRAME_TX) {
+		u64 cookie = IEEE80211_SKB_CB(skb)->ack.cookie;
+		struct ieee80211_sub_if_data *sdata;
+		struct ieee80211_hdr *hdr = (void *)skb->data;
+		__be16 ethertype = 0;
+
+		if (skb->len >= ETH_HLEN && skb->protocol == cpu_to_be16(ETH_P_802_3))
+			skb_copy_bits(skb, 2 * ETH_ALEN, &ethertype, ETH_TLEN);
+
+		rcu_read_lock();
+		sdata = ieee80211_sdata_from_skb(local, skb);
+		if (sdata) {
+			if (ethertype == sdata->control_port_protocol ||
+			    ethertype == cpu_to_be16(ETH_P_PREAUTH))
+				cfg80211_control_port_tx_status(&sdata->wdev,
+								cookie,
+								skb->data,
+								skb->len,
+								acked,
+								GFP_ATOMIC);
+			else if (ieee80211_is_any_nullfunc(hdr->frame_control))
+				cfg80211_probe_status(sdata->dev, hdr->addr1,
+						      cookie, acked,
+						      info->status.ack_signal,
+						      info->status.is_valid_ack_signal,
+						      GFP_ATOMIC);
+			else if (ieee80211_is_mgmt(hdr->frame_control))
+				cfg80211_mgmt_tx_status(&sdata->wdev, cookie,
+							skb->data, skb->len,
+							acked, GFP_ATOMIC);
+			else
+				pr_warn("Unknown status report in ack skb\n");
+
+		}
+		rcu_read_unlock();
+
+		dev_kfree_skb_any(skb);
+	} else if (dropped) {
+		dev_kfree_skb_any(skb);
+	} else {
+		/* consumes skb */
+		skb_complete_wifi_ack(skb, acked);
+	}
+}
+
+static void ieee80211_report_used_skb(struct ieee80211_local *local,
+				      struct sk_buff *skb, bool dropped)
+{
+	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
+	u16 tx_time_est = ieee80211_info_get_tx_time_est(info);
+	struct ieee80211_hdr *hdr = (void *)skb->data;
+	bool acked = info->flags & IEEE80211_TX_STAT_ACK;
+
+	if (dropped)
+		acked = false;
+
+	if (tx_time_est) {
+		struct sta_info *sta;
+
+		rcu_read_lock();
+
+		sta = sta_info_get_by_addrs(local, hdr->addr1, hdr->addr2);
+		ieee80211_sta_update_pending_airtime(local, sta,
+						     skb_get_queue_mapping(skb),
+						     tx_time_est,
+						     true);
+		rcu_read_unlock();
+	}
+
+	if (info->flags & IEEE80211_TX_INTFL_MLME_CONN_TX) {
+		struct ieee80211_sub_if_data *sdata;
+
+		rcu_read_lock();
+
+		sdata = ieee80211_sdata_from_skb(local, skb);
+
+		if (!sdata) {
+			skb->dev = NULL;
+		} else {
+			unsigned int hdr_size =
+				ieee80211_hdrlen(hdr->frame_control);
+
+			/* Check to see if packet is a TDLS teardown packet */
+			if (ieee80211_is_data(hdr->frame_control) &&
+			    (ieee80211_get_tdls_action(skb, hdr_size) ==
+			     WLAN_TDLS_TEARDOWN))
+				ieee80211_tdls_td_tx_handle(local, sdata, skb,
+							    info->flags);
+			else
+				ieee80211_mgd_conn_tx_status(sdata,
+							     hdr->frame_control,
+							     acked);
+		}
+
+		rcu_read_unlock();
+	} else if (info->ack_frame_id) {
+		ieee80211_report_ack_skb(local, info, acked, dropped);
+	}
+
+	if (!dropped && skb->destructor) {
+		skb->wifi_acked_valid = 1;
+		skb->wifi_acked = acked;
+	}
+
+	ieee80211_led_tx(local);
+
+	if (skb_has_frag_list(skb)) {
+		kfree_skb_list(skb_shinfo(skb)->frag_list);
+		skb_shinfo(skb)->frag_list = NULL;
+	}
+}
+
+/*
+ * Use a static threshold for now, best value to be determined
+ * by testing ...
+ * Should it depend on:
+ *  - on # of retransmissions
+ *  - current throughput (higher value for higher tpt)?
+ */
+#define STA_LOST_PKT_THRESHOLD	50
+#define STA_LOST_PKT_TIME	HZ		/* 1 sec since last ACK */
+#define STA_LOST_TDLS_PKT_THRESHOLD	10
+#define STA_LOST_TDLS_PKT_TIME		(10*HZ) /* 10secs since last ACK */
+
+static void ieee80211_lost_packet(struct sta_info *sta,
+				  struct ieee80211_tx_info *info)
+{
+	unsigned long pkt_time = STA_LOST_PKT_TIME;
+	unsigned int pkt_thr = STA_LOST_PKT_THRESHOLD;
+
+	/* If driver relies on its own algorithm for station kickout, skip
+	 * mac80211 packet loss mechanism.
+	 */
+	if (ieee80211_hw_check(&sta->local->hw, REPORTS_LOW_ACK))
+		return;
+
+	/* This packet was aggregated but doesn't carry status info */
+	if ((info->flags & IEEE80211_TX_CTL_AMPDU) &&
+	    !(info->flags & IEEE80211_TX_STAT_AMPDU))
+		return;
+
+	sta->status_stats.lost_packets++;
+	if (sta->sta.tdls) {
+		pkt_time = STA_LOST_TDLS_PKT_TIME;
+		pkt_thr = STA_LOST_PKT_THRESHOLD;
+	}
+
+	/*
+	 * If we're in TDLS mode, make sure that all STA_LOST_TDLS_PKT_THRESHOLD
+	 * of the last packets were lost, and that no ACK was received in the
+	 * last STA_LOST_TDLS_PKT_TIME ms, before triggering the CQM packet-loss
+	 * mechanism.
+	 * For non-TDLS, use STA_LOST_PKT_THRESHOLD and STA_LOST_PKT_TIME
+	 */
+	if (sta->status_stats.lost_packets < pkt_thr ||
+	    !time_after(jiffies, sta->status_stats.last_pkt_time + pkt_time))
+		return;
+
+	cfg80211_cqm_pktloss_notify(sta->sdata->dev, sta->sta.addr,
+				    sta->status_stats.lost_packets, GFP_ATOMIC);
+	sta->status_stats.lost_packets = 0;
+}
+
+static int ieee80211_tx_get_rates(struct ieee80211_hw *hw,
+				  struct ieee80211_tx_info *info,
+				  int *retry_count)
+{
+	int count = -1;
+	int i;
+
+	for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
+		if ((info->flags & IEEE80211_TX_CTL_AMPDU) &&
+		    !(info->flags & IEEE80211_TX_STAT_AMPDU)) {
+			/* just the first aggr frame carry status info */
+			info->status.rates[i].idx = -1;
+			info->status.rates[i].count = 0;
+			break;
+		} else if (info->status.rates[i].idx < 0) {
+			break;
+		} else if (i >= hw->max_report_rates) {
+			/* the HW cannot have attempted that rate */
+			info->status.rates[i].idx = -1;
+			info->status.rates[i].count = 0;
+			break;
+		}
+
+		count += info->status.rates[i].count;
+	}
+
+	if (count < 0)
+		count = 0;
+
+	*retry_count = count;
+	return i - 1;
+}
+
+void ieee80211_tx_monitor(struct ieee80211_local *local, struct sk_buff *skb,
+			  struct ieee80211_supported_band *sband,
+			  int retry_count, int shift, bool send_to_cooked,
+			  struct ieee80211_tx_status *status)
+{
+	struct sk_buff *skb2;
+	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
+	struct ieee80211_sub_if_data *sdata;
+	struct net_device *prev_dev = NULL;
+	int rtap_len;
+
+	/* send frame to monitor interfaces now */
+	rtap_len = ieee80211_tx_radiotap_len(info, status);
+	if (WARN_ON_ONCE(skb_headroom(skb) < rtap_len)) {
+		pr_err("ieee80211_tx_status: headroom too small\n");
+		dev_kfree_skb(skb);
+		return;
+	}
+	ieee80211_add_tx_radiotap_header(local, sband, skb, retry_count,
+					 rtap_len, shift, status);
+
+	/* XXX: is this sufficient for BPF? */
+	skb_reset_mac_header(skb);
+	skb->ip_summed = CHECKSUM_UNNECESSARY;
+	skb->pkt_type = PACKET_OTHERHOST;
+	skb->protocol = htons(ETH_P_802_2);
+	memset(skb->cb, 0, sizeof(skb->cb));
+
+	rcu_read_lock();
+	list_for_each_entry_rcu(sdata, &local->interfaces, list) {
+		if (sdata->vif.type == NL80211_IFTYPE_MONITOR) {
+			if (!ieee80211_sdata_running(sdata))
+				continue;
+
+			if ((sdata->u.mntr.flags & MONITOR_FLAG_COOK_FRAMES) &&
+			    !send_to_cooked)
+				continue;
+
+			if (prev_dev) {
+				skb2 = skb_clone(skb, GFP_ATOMIC);
+				if (skb2) {
+					skb2->dev = prev_dev;
+					netif_rx(skb2);
+				}
+			}
+
+			prev_dev = sdata->dev;
+		}
+	}
+	if (prev_dev) {
+		skb->dev = prev_dev;
+		netif_rx(skb);
+		skb = NULL;
+	}
+	rcu_read_unlock();
+	dev_kfree_skb(skb);
+}
+
+static void __ieee80211_tx_status(struct ieee80211_hw *hw,
+				  struct ieee80211_tx_status *status,
+				  int rates_idx, int retry_count)
+{
+	struct sk_buff *skb = status->skb;
+	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
+	struct ieee80211_local *local = hw_to_local(hw);
+	struct ieee80211_tx_info *info = status->info;
+	struct sta_info *sta;
+	__le16 fc;
+	struct ieee80211_supported_band *sband;
+	bool send_to_cooked;
+	bool acked;
+	bool noack_success;
+	struct ieee80211_bar *bar;
+	int shift = 0;
+	int tid = IEEE80211_NUM_TIDS;
+
+	sband = local->hw.wiphy->bands[info->band];
+	fc = hdr->frame_control;
+
+	if (status->sta) {
+		sta = container_of(status->sta, struct sta_info, sta);
+		shift = ieee80211_vif_get_shift(&sta->sdata->vif);
+
+		if (info->flags & IEEE80211_TX_STATUS_EOSP)
+			clear_sta_flag(sta, WLAN_STA_SP);
+
+		acked = !!(info->flags & IEEE80211_TX_STAT_ACK);
+		noack_success = !!(info->flags &
+				   IEEE80211_TX_STAT_NOACK_TRANSMITTED);
+
+		/* mesh Peer Service Period support */
+		if (ieee80211_vif_is_mesh(&sta->sdata->vif) &&
+		    ieee80211_is_data_qos(fc))
+			ieee80211_mpsp_trigger_process(
+				ieee80211_get_qos_ctl(hdr), sta, true, acked);
+
+		if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL) &&
+		    (ieee80211_is_data(hdr->frame_control)) &&
+		    (rates_idx != -1))
+			sta->tx_stats.last_rate =
+				info->status.rates[rates_idx];
+
+		if ((info->flags & IEEE80211_TX_STAT_AMPDU_NO_BACK) &&
+		    (ieee80211_is_data_qos(fc))) {
+			u16 ssn;
+			u8 *qc;
+
+			qc = ieee80211_get_qos_ctl(hdr);
+			tid = qc[0] & 0xf;
+			ssn = ((le16_to_cpu(hdr->seq_ctrl) + 0x10)
+						& IEEE80211_SCTL_SEQ);
+			ieee80211_send_bar(&sta->sdata->vif, hdr->addr1,
+					   tid, ssn);
+		} else if (ieee80211_is_data_qos(fc)) {
+			u8 *qc = ieee80211_get_qos_ctl(hdr);
+
+			tid = qc[0] & 0xf;
+		}
+
+		if (!acked && ieee80211_is_back_req(fc)) {
+			u16 control;
+
+			/*
+			 * BAR failed, store the last SSN and retry sending
+			 * the BAR when the next unicast transmission on the
+			 * same TID succeeds.
+			 */
+			bar = (struct ieee80211_bar *) skb->data;
+			control = le16_to_cpu(bar->control);
+			if (!(control & IEEE80211_BAR_CTRL_MULTI_TID)) {
+				u16 ssn = le16_to_cpu(bar->start_seq_num);
+
+				tid = (control &
+				       IEEE80211_BAR_CTRL_TID_INFO_MASK) >>
+				      IEEE80211_BAR_CTRL_TID_INFO_SHIFT;
+
+				ieee80211_set_bar_pending(sta, tid, ssn);
+			}
+		}
+
+		if (info->flags & IEEE80211_TX_STAT_TX_FILTERED) {
+			ieee80211_handle_filtered_frame(local, sta, skb);
+			return;
+		} else if (ieee80211_is_data_present(fc)) {
+			if (!acked && !noack_success)
+				sta->status_stats.msdu_failed[tid]++;
+
+			sta->status_stats.msdu_retries[tid] +=
+				retry_count;
+		}
+
+		if (!(info->flags & IEEE80211_TX_CTL_INJECTED) && acked)
+			ieee80211_frame_acked(sta, skb);
+
+	}
+
+	/* SNMP counters
+	 * Fragments are passed to low-level drivers as separate skbs, so these
+	 * are actually fragments, not frames. Update frame counters only for
+	 * the first fragment of the frame. */
+	if ((info->flags & IEEE80211_TX_STAT_ACK) ||
+	    (info->flags & IEEE80211_TX_STAT_NOACK_TRANSMITTED)) {
+		if (ieee80211_is_first_frag(hdr->seq_ctrl)) {
+			I802_DEBUG_INC(local->dot11TransmittedFrameCount);
+			if (is_multicast_ether_addr(ieee80211_get_DA(hdr)))
+				I802_DEBUG_INC(local->dot11MulticastTransmittedFrameCount);
+			if (retry_count > 0)
+				I802_DEBUG_INC(local->dot11RetryCount);
+			if (retry_count > 1)
+				I802_DEBUG_INC(local->dot11MultipleRetryCount);
+		}
+
+		/* This counter shall be incremented for an acknowledged MPDU
+		 * with an individual address in the address 1 field or an MPDU
+		 * with a multicast address in the address 1 field of type Data
+		 * or Management. */
+		if (!is_multicast_ether_addr(hdr->addr1) ||
+		    ieee80211_is_data(fc) ||
+		    ieee80211_is_mgmt(fc))
+			I802_DEBUG_INC(local->dot11TransmittedFragmentCount);
+	} else {
+		if (ieee80211_is_first_frag(hdr->seq_ctrl))
+			I802_DEBUG_INC(local->dot11FailedCount);
+	}
+
+	if (ieee80211_is_any_nullfunc(fc) &&
+	    ieee80211_has_pm(fc) &&
+	    ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS) &&
+	    !(info->flags & IEEE80211_TX_CTL_INJECTED) &&
+	    local->ps_sdata && !(local->scanning)) {
+		if (info->flags & IEEE80211_TX_STAT_ACK) {
+			local->ps_sdata->u.mgd.flags |=
+					IEEE80211_STA_NULLFUNC_ACKED;
+		} else
+			mod_timer(&local->dynamic_ps_timer, jiffies +
+					msecs_to_jiffies(10));
+	}
+
+	ieee80211_report_used_skb(local, skb, false);
+
+	/* this was a transmitted frame, but now we want to reuse it */
+	skb_orphan(skb);
+
+	/* Need to make a copy before skb->cb gets cleared */
+	send_to_cooked = !!(info->flags & IEEE80211_TX_CTL_INJECTED) ||
+			 !(ieee80211_is_data(fc));
+
+	/*
+	 * This is a bit racy but we can avoid a lot of work
+	 * with this test...
+	 */
+	if (!local->monitors && (!send_to_cooked || !local->cooked_mntrs)) {
+		if (status->free_list)
+			list_add_tail(&skb->list, status->free_list);
+		else
+			dev_kfree_skb(skb);
+		return;
+	}
+
+	/* send to monitor interfaces */
+	ieee80211_tx_monitor(local, skb, sband, retry_count, shift,
+			     send_to_cooked, status);
+}
+
+void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb)
+{
+	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
+	struct ieee80211_local *local = hw_to_local(hw);
+	struct ieee80211_tx_status status = {
+		.skb = skb,
+		.info = IEEE80211_SKB_CB(skb),
+	};
+	struct sta_info *sta;
+
+	rcu_read_lock();
+
+	sta = sta_info_get_by_addrs(local, hdr->addr1, hdr->addr2);
+	if (sta)
+		status.sta = &sta->sta;
+
+	ieee80211_tx_status_ext(hw, &status);
+	rcu_read_unlock();
+}
+EXPORT_SYMBOL(ieee80211_tx_status);
+
+void ieee80211_tx_status_ext(struct ieee80211_hw *hw,
+			     struct ieee80211_tx_status *status)
+{
+	struct ieee80211_local *local = hw_to_local(hw);
+	struct ieee80211_tx_info *info = status->info;
+	struct ieee80211_sta *pubsta = status->sta;
+	struct sk_buff *skb = status->skb;
+	struct ieee80211_supported_band *sband;
+	struct sta_info *sta = NULL;
+	int rates_idx, retry_count;
+	bool acked, noack_success;
+	u16 tx_time_est;
+
+	if (pubsta) {
+		sta = container_of(pubsta, struct sta_info, sta);
+
+		if (status->rate)
+			sta->tx_stats.last_rate_info = *status->rate;
+	}
+
+	if (skb && (tx_time_est =
+		    ieee80211_info_get_tx_time_est(IEEE80211_SKB_CB(skb))) > 0) {
+		/* Do this here to avoid the expensive lookup of the sta
+		 * in ieee80211_report_used_skb().
+		 */
+		ieee80211_sta_update_pending_airtime(local, sta,
+						     skb_get_queue_mapping(skb),
+						     tx_time_est,
+						     true);
+		ieee80211_info_set_tx_time_est(IEEE80211_SKB_CB(skb), 0);
+	}
+
+	if (!status->info)
+		goto free;
+
+	rates_idx = ieee80211_tx_get_rates(hw, info, &retry_count);
+
+	sband = hw->wiphy->bands[info->band];
+
+	acked = !!(info->flags & IEEE80211_TX_STAT_ACK);
+	noack_success = !!(info->flags & IEEE80211_TX_STAT_NOACK_TRANSMITTED);
+
+	if (pubsta) {
+		struct ieee80211_sub_if_data *sdata = sta->sdata;
+
+		if (!acked && !noack_success)
+			sta->status_stats.retry_failed++;
+		sta->status_stats.retry_count += retry_count;
+
+		if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) {
+			if (sdata->vif.type == NL80211_IFTYPE_STATION &&
+			    skb && !(info->flags & IEEE80211_TX_CTL_HW_80211_ENCAP))
+				ieee80211_sta_tx_notify(sdata, (void *) skb->data,
+							acked, info->status.tx_time);
+
+			if (acked) {
+				sta->status_stats.last_ack = jiffies;
+
+				if (sta->status_stats.lost_packets)
+					sta->status_stats.lost_packets = 0;
+
+				/* Track when last packet was ACKed */
+				sta->status_stats.last_pkt_time = jiffies;
+
+				/* Reset connection monitor */
+				if (sdata->vif.type == NL80211_IFTYPE_STATION &&
+				    unlikely(sdata->u.mgd.probe_send_count > 0))
+					sdata->u.mgd.probe_send_count = 0;
+
+				if (info->status.is_valid_ack_signal) {
+					sta->status_stats.last_ack_signal =
+							 (s8)info->status.ack_signal;
+					sta->status_stats.ack_signal_filled = true;
+					ewma_avg_signal_add(&sta->status_stats.avg_ack_signal,
+							    -info->status.ack_signal);
+				}
+			} else if (test_sta_flag(sta, WLAN_STA_PS_STA)) {
+				/*
+				 * The STA is in power save mode, so assume
+				 * that this TX packet failed because of that.
+				 */
+				if (skb)
+					ieee80211_handle_filtered_frame(local, sta, skb);
+				return;
+			} else if (noack_success) {
+				/* nothing to do here, do not account as lost */
+			} else {
+				ieee80211_lost_packet(sta, info);
+			}
+		}
+
+		rate_control_tx_status(local, sband, status);
+		if (ieee80211_vif_is_mesh(&sta->sdata->vif))
+			ieee80211s_update_metric(local, sta, status);
+	}
+
+	if (skb && !(info->flags & IEEE80211_TX_CTL_HW_80211_ENCAP))
+		return __ieee80211_tx_status(hw, status, rates_idx,
+					     retry_count);
+
+	if (acked || noack_success) {
+		I802_DEBUG_INC(local->dot11TransmittedFrameCount);
+		if (!pubsta)
+			I802_DEBUG_INC(local->dot11MulticastTransmittedFrameCount);
+		if (retry_count > 0)
+			I802_DEBUG_INC(local->dot11RetryCount);
+		if (retry_count > 1)
+			I802_DEBUG_INC(local->dot11MultipleRetryCount);
+	} else {
+		I802_DEBUG_INC(local->dot11FailedCount);
+	}
+
+free:
+	if (!skb)
+		return;
+
+	ieee80211_report_used_skb(local, skb, false);
+	if (status->free_list)
+		list_add_tail(&skb->list, status->free_list);
+	else
+		dev_kfree_skb(skb);
+}
+EXPORT_SYMBOL(ieee80211_tx_status_ext);
+
+void ieee80211_tx_rate_update(struct ieee80211_hw *hw,
+			      struct ieee80211_sta *pubsta,
+			      struct ieee80211_tx_info *info)
+{
+	struct ieee80211_local *local = hw_to_local(hw);
+	struct ieee80211_supported_band *sband = hw->wiphy->bands[info->band];
+	struct sta_info *sta = container_of(pubsta, struct sta_info, sta);
+	struct ieee80211_tx_status status = {
+		.info = info,
+		.sta = pubsta,
+	};
+
+	rate_control_tx_status(local, sband, &status);
+
+	if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL))
+		sta->tx_stats.last_rate = info->status.rates[0];
+}
+EXPORT_SYMBOL(ieee80211_tx_rate_update);
+
+void ieee80211_tx_status_8023(struct ieee80211_hw *hw,
+			      struct ieee80211_vif *vif,
+			      struct sk_buff *skb)
+{
+	struct ieee80211_sub_if_data *sdata;
+	struct ieee80211_tx_status status = {
+		.skb = skb,
+		.info = IEEE80211_SKB_CB(skb),
+	};
+	struct sta_info *sta;
+
+	sdata = vif_to_sdata(vif);
+
+	rcu_read_lock();
+
+	if (!ieee80211_lookup_ra_sta(sdata, skb, &sta) && !IS_ERR(sta))
+		status.sta = &sta->sta;
+
+	ieee80211_tx_status_ext(hw, &status);
+
+	rcu_read_unlock();
+}
+EXPORT_SYMBOL(ieee80211_tx_status_8023);
+
+void ieee80211_report_low_ack(struct ieee80211_sta *pubsta, u32 num_packets)
+{
+	struct sta_info *sta = container_of(pubsta, struct sta_info, sta);
+	cfg80211_cqm_pktloss_notify(sta->sdata->dev, sta->sta.addr,
+				    num_packets, GFP_ATOMIC);
+}
+EXPORT_SYMBOL(ieee80211_report_low_ack);
+
+void ieee80211_free_txskb(struct ieee80211_hw *hw, struct sk_buff *skb)
+{
+	struct ieee80211_local *local = hw_to_local(hw);
+
+	ieee80211_report_used_skb(local, skb, true);
+	dev_kfree_skb_any(skb);
+}
+EXPORT_SYMBOL(ieee80211_free_txskb);
+
+void ieee80211_purge_tx_queue(struct ieee80211_hw *hw,
+			      struct sk_buff_head *skbs)
+{
+	struct sk_buff *skb;
+
+	while ((skb = __skb_dequeue(skbs)))
+		ieee80211_free_txskb(hw, skb);
+}