1 files changed, 232 insertions, 92 deletions

diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index 61c621e..580704e 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -40,6 +40,8 @@
 static struct sk_buff *remove_monitor_info(struct ieee80211_local *local,
 					   struct sk_buff *skb)
 {
+	struct ieee80211_rx_status *status = IEEE80211_SKB_RXCB(skb);
+
 	if (local->hw.flags & IEEE80211_HW_RX_INCLUDES_FCS) {
 		if (likely(skb->len > FCS_LEN))
 			__pskb_trim(skb, skb->len - FCS_LEN);
@@ -47,24 +49,29 @@ static struct sk_buff *remove_monitor_info(struct ieee80211_local *local,
 			/* driver bug */
 			WARN_ON(1);
 			dev_kfree_skb(skb);
-			skb = NULL;
+			return NULL;
 		}
 	}
 
+	if (status->vendor_radiotap_len)
+		__pskb_pull(skb, status->vendor_radiotap_len);
+
 	return skb;
 }
 
-static inline int should_drop_frame(struct sk_buff *skb,
-				    int present_fcs_len)
+static inline int should_drop_frame(struct sk_buff *skb, int present_fcs_len)
 {
 	struct ieee80211_rx_status *status = IEEE80211_SKB_RXCB(skb);
-	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
+	struct ieee80211_hdr *hdr;
+
+	hdr = (void *)(skb->data + status->vendor_radiotap_len);
 
 	if (status->flag & (RX_FLAG_FAILED_FCS_CRC |
 			    RX_FLAG_FAILED_PLCP_CRC |
 			    RX_FLAG_AMPDU_IS_ZEROLEN))
 		return 1;
-	if (unlikely(skb->len < 16 + present_fcs_len))
+	if (unlikely(skb->len < 16 + present_fcs_len +
+				status->vendor_radiotap_len))
 		return 1;
 	if (ieee80211_is_ctl(hdr->frame_control) &&
 	    !ieee80211_is_pspoll(hdr->frame_control) &&
@@ -74,32 +81,53 @@ static inline int should_drop_frame(struct sk_buff *skb,
 }
 
 static int
-ieee80211_rx_radiotap_len(struct ieee80211_local *local,
-			  struct ieee80211_rx_status *status)
+ieee80211_rx_radiotap_space(struct ieee80211_local *local,
+			    struct ieee80211_rx_status *status)
 {
 	int len;
 
 	/* always present fields */
 	len = sizeof(struct ieee80211_radiotap_header) + 9;
 
-	if (status->flag & RX_FLAG_MACTIME_MPDU)
+	/* allocate extra bitmap */
+	if (status->vendor_radiotap_len)
+		len += 4;
+
+	if (ieee80211_have_rx_timestamp(status)) {
+		len = ALIGN(len, 8);
 		len += 8;
+	}
 	if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM)
 		len += 1;
 
-	if (len & 1) /* padding for RX_FLAGS if necessary */
-		len++;
+	/* padding for RX_FLAGS if necessary */
+	len = ALIGN(len, 2);
 
 	if (status->flag & RX_FLAG_HT) /* HT info */
 		len += 3;
 
 	if (status->flag & RX_FLAG_AMPDU_DETAILS) {
-		/* padding */
-		while (len & 3)
-			len++;
+		len = ALIGN(len, 4);
 		len += 8;
 	}
 
+	if (status->flag & RX_FLAG_VHT) {
+		len = ALIGN(len, 2);
+		len += 12;
+	}
+
+	if (status->vendor_radiotap_len) {
+		if (WARN_ON_ONCE(status->vendor_radiotap_align == 0))
+			status->vendor_radiotap_align = 1;
+		/* align standard part of vendor namespace */
+		len = ALIGN(len, 2);
+		/* allocate standard part of vendor namespace */
+		len += 6;
+		/* align vendor-defined part */
+		len = ALIGN(len, status->vendor_radiotap_align);
+		/* vendor-defined part is already in skb */
+	}
+
 	return len;
 }
 
@@ -118,6 +146,11 @@ ieee80211_add_rx_radiotap_header(struct ieee80211_local *local,
 	struct ieee80211_radiotap_header *rthdr;
 	unsigned char *pos;
 	u16 rx_flags = 0;
+	int mpdulen;
+
+	mpdulen = skb->len;
+	if (!(has_fcs && (local->hw.flags & IEEE80211_HW_RX_INCLUDES_FCS)))
+		mpdulen += FCS_LEN;
 
 	rthdr = (struct ieee80211_radiotap_header *)skb_push(skb, rtap_len);
 	memset(rthdr, 0, rtap_len);
@@ -128,17 +161,30 @@ ieee80211_add_rx_radiotap_header(struct ieee80211_local *local,
 			    (1 << IEEE80211_RADIOTAP_CHANNEL) |
 			    (1 << IEEE80211_RADIOTAP_ANTENNA) |
 			    (1 << IEEE80211_RADIOTAP_RX_FLAGS));
-	rthdr->it_len = cpu_to_le16(rtap_len);
+	rthdr->it_len = cpu_to_le16(rtap_len + status->vendor_radiotap_len);
 
-	pos = (unsigned char *)(rthdr+1);
+	pos = (unsigned char *)(rthdr + 1);
+
+	if (status->vendor_radiotap_len) {
+		rthdr->it_present |=
+			cpu_to_le32(BIT(IEEE80211_RADIOTAP_VENDOR_NAMESPACE)) |
+			cpu_to_le32(BIT(IEEE80211_RADIOTAP_EXT));
+		put_unaligned_le32(status->vendor_radiotap_bitmap, pos);
+		pos += 4;
+	}
 
 	/* the order of the following fields is important */
 
 	/* IEEE80211_RADIOTAP_TSFT */
-	if (status->flag & RX_FLAG_MACTIME_MPDU) {
-		put_unaligned_le64(status->mactime, pos);
-		rthdr->it_present |=
-			cpu_to_le32(1 << IEEE80211_RADIOTAP_TSFT);
+	if (ieee80211_have_rx_timestamp(status)) {
+		/* padding */
+		while ((pos - (u8 *)rthdr) & 7)
+			*pos++ = 0;
+		put_unaligned_le64(
+			ieee80211_calculate_rx_timestamp(local, status,
+							 mpdulen, 0),
+			pos);
+		rthdr->it_present |= cpu_to_le32(1 << IEEE80211_RADIOTAP_TSFT);
 		pos += 8;
 	}
 
@@ -152,7 +198,7 @@ ieee80211_add_rx_radiotap_header(struct ieee80211_local *local,
 	pos++;
 
 	/* IEEE80211_RADIOTAP_RATE */
-	if (!rate || status->flag & RX_FLAG_HT) {
+	if (!rate || status->flag & (RX_FLAG_HT | RX_FLAG_VHT)) {
 		/*
 		 * Without rate information don't add it. If we have,
 		 * MCS information is a separate field in radiotap,
@@ -172,7 +218,7 @@ ieee80211_add_rx_radiotap_header(struct ieee80211_local *local,
 	if (status->band == IEEE80211_BAND_5GHZ)
 		put_unaligned_le16(IEEE80211_CHAN_OFDM | IEEE80211_CHAN_5GHZ,
 				   pos);
-	else if (status->flag & RX_FLAG_HT)
+	else if (status->flag & (RX_FLAG_HT | RX_FLAG_VHT))
 		put_unaligned_le16(IEEE80211_CHAN_DYN | IEEE80211_CHAN_2GHZ,
 				   pos);
 	else if (rate && rate->flags & IEEE80211_RATE_ERP_G)
@@ -205,7 +251,7 @@ ieee80211_add_rx_radiotap_header(struct ieee80211_local *local,
 	/* IEEE80211_RADIOTAP_RX_FLAGS */
 	/* ensure 2 byte alignment for the 2 byte field as required */
 	if ((pos - (u8 *)rthdr) & 1)
-		pos++;
+		*pos++ = 0;
 	if (status->flag & RX_FLAG_FAILED_PLCP_CRC)
 		rx_flags |= IEEE80211_RADIOTAP_F_RX_BADPLCP;
 	put_unaligned_le16(rx_flags, pos);
@@ -255,6 +301,56 @@ ieee80211_add_rx_radiotap_header(struct ieee80211_local *local,
 			*pos++ = 0;
 		*pos++ = 0;
 	}
+
+	if (status->flag & RX_FLAG_VHT) {
+		u16 known = local->hw.radiotap_vht_details;
+
+		rthdr->it_present |= cpu_to_le32(1 << IEEE80211_RADIOTAP_VHT);
+		/* known field - how to handle 80+80? */
+		if (status->flag & RX_FLAG_80P80MHZ)
+			known &= ~IEEE80211_RADIOTAP_VHT_KNOWN_BANDWIDTH;
+		put_unaligned_le16(known, pos);
+		pos += 2;
+		/* flags */
+		if (status->flag & RX_FLAG_SHORT_GI)
+			*pos |= IEEE80211_RADIOTAP_VHT_FLAG_SGI;
+		pos++;
+		/* bandwidth */
+		if (status->flag & RX_FLAG_80MHZ)
+			*pos++ = 4;
+		else if (status->flag & RX_FLAG_80P80MHZ)
+			*pos++ = 0; /* marked not known above */
+		else if (status->flag & RX_FLAG_160MHZ)
+			*pos++ = 11;
+		else if (status->flag & RX_FLAG_40MHZ)
+			*pos++ = 1;
+		else /* 20 MHz */
+			*pos++ = 0;
+		/* MCS/NSS */
+		*pos = (status->rate_idx << 4) | status->vht_nss;
+		pos += 4;
+		/* coding field */
+		pos++;
+		/* group ID */
+		pos++;
+		/* partial_aid */
+		pos += 2;
+	}
+
+	if (status->vendor_radiotap_len) {
+		/* ensure 2 byte alignment for the vendor field as required */
+		if ((pos - (u8 *)rthdr) & 1)
+			*pos++ = 0;
+		*pos++ = status->vendor_radiotap_oui[0];
+		*pos++ = status->vendor_radiotap_oui[1];
+		*pos++ = status->vendor_radiotap_oui[2];
+		*pos++ = status->vendor_radiotap_subns;
+		put_unaligned_le16(status->vendor_radiotap_len, pos);
+		pos += 2;
+		/* align the actual payload as requested */
+		while ((pos - (u8 *)rthdr) & (status->vendor_radiotap_align - 1))
+			*pos++ = 0;
+	}
 }
 
 /*
@@ -282,14 +378,11 @@ ieee80211_rx_monitor(struct ieee80211_local *local, struct sk_buff *origskb,
 	 * the SKB because it has a bad FCS/PLCP checksum.
 	 */
 
-	/* room for the radiotap header based on driver features */
-	needed_headroom = ieee80211_rx_radiotap_len(local, status);
-
 	if (local->hw.flags & IEEE80211_HW_RX_INCLUDES_FCS)
 		present_fcs_len = FCS_LEN;
 
-	/* make sure hdr->frame_control is on the linear part */
-	if (!pskb_may_pull(origskb, 2)) {
+	/* ensure hdr->frame_control and vendor radiotap data are in skb head */
+	if (!pskb_may_pull(origskb, 2 + status->vendor_radiotap_len)) {
 		dev_kfree_skb(origskb);
 		return NULL;
 	}
@@ -303,6 +396,9 @@ ieee80211_rx_monitor(struct ieee80211_local *local, struct sk_buff *origskb,
 		return remove_monitor_info(local, origskb);
 	}
 
+	/* room for the radiotap header based on driver features */
+	needed_headroom = ieee80211_rx_radiotap_space(local, status);
+
 	if (should_drop_frame(origskb, present_fcs_len)) {
 		/* only need to expand headroom if necessary */
 		skb = origskb;
@@ -374,7 +470,6 @@ ieee80211_rx_monitor(struct ieee80211_local *local, struct sk_buff *origskb,
 	return origskb;
 }
 
-
 static void ieee80211_parse_qos(struct ieee80211_rx_data *rx)
 {
 	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)rx->skb->data;
@@ -403,10 +498,10 @@ static void ieee80211_parse_qos(struct ieee80211_rx_data *rx)
 		 *
 		 * We also use that counter for non-QoS STAs.
 		 */
-		seqno_idx = NUM_RX_DATA_QUEUES;
+		seqno_idx = IEEE80211_NUM_TIDS;
 		security_idx = 0;
 		if (ieee80211_is_mgmt(hdr->frame_control))
-			security_idx = NUM_RX_DATA_QUEUES;
+			security_idx = IEEE80211_NUM_TIDS;
 		tid = 0;
 	}
 
@@ -481,8 +576,7 @@ static int ieee80211_get_mmie_keyidx(struct sk_buff *skb)
 	struct ieee80211_mgmt *hdr = (struct ieee80211_mgmt *) skb->data;
 	struct ieee80211_mmie *mmie;
 
-	if (skb->len < 24 + sizeof(*mmie) ||
-	    !is_multicast_ether_addr(hdr->da))
+	if (skb->len < 24 + sizeof(*mmie) || !is_multicast_ether_addr(hdr->da))
 		return -1;
 
 	if (!ieee80211_is_robust_mgmt_frame((struct ieee80211_hdr *) hdr))
@@ -497,9 +591,7 @@ static int ieee80211_get_mmie_keyidx(struct sk_buff *skb)
 	return le16_to_cpu(mmie->key_id);
 }
 
-
-static ieee80211_rx_result
-ieee80211_rx_mesh_check(struct ieee80211_rx_data *rx)
+static ieee80211_rx_result ieee80211_rx_mesh_check(struct ieee80211_rx_data *rx)
 {
 	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)rx->skb->data;
 	char *dev_addr = rx->sdata->vif.addr;
@@ -507,7 +599,7 @@ ieee80211_rx_mesh_check(struct ieee80211_rx_data *rx)
 	if (ieee80211_is_data(hdr->frame_control)) {
 		if (is_multicast_ether_addr(hdr->addr1)) {
 			if (ieee80211_has_tods(hdr->frame_control) ||
-				!ieee80211_has_fromds(hdr->frame_control))
+			    !ieee80211_has_fromds(hdr->frame_control))
 				return RX_DROP_MONITOR;
 			if (ether_addr_equal(hdr->addr3, dev_addr))
 				return RX_DROP_MONITOR;
@@ -531,10 +623,15 @@ ieee80211_rx_mesh_check(struct ieee80211_rx_data *rx)
 
 		if (ieee80211_is_action(hdr->frame_control)) {
 			u8 category;
+
+			/* make sure category field is present */
+			if (rx->skb->len < IEEE80211_MIN_ACTION_SIZE)
+				return RX_DROP_MONITOR;
+
 			mgmt = (struct ieee80211_mgmt *)hdr;
 			category = mgmt->u.action.category;
 			if (category != WLAN_CATEGORY_MESH_ACTION &&
-				category != WLAN_CATEGORY_SELF_PROTECTED)
+			    category != WLAN_CATEGORY_SELF_PROTECTED)
 				return RX_DROP_MONITOR;
 			return RX_CONTINUE;
 		}
@@ -546,7 +643,6 @@ ieee80211_rx_mesh_check(struct ieee80211_rx_data *rx)
 			return RX_CONTINUE;
 
 		return RX_DROP_MONITOR;
-
 	}
 
 	return RX_CONTINUE;
@@ -570,7 +666,6 @@ static inline u16 seq_sub(u16 sq1, u16 sq2)
 	return (sq1 - sq2) & SEQ_MASK;
 }
 
-
 static void ieee80211_release_reorder_frame(struct ieee80211_sub_if_data *sdata,
 					    struct tid_ampdu_rx *tid_agg_rx,
 					    int index)
@@ -883,14 +978,16 @@ ieee80211_rx_h_check(struct ieee80211_rx_data *rx)
 		 */
 		if (rx->sta && rx->sdata->vif.type == NL80211_IFTYPE_STATION &&
 		    ieee80211_is_data_present(hdr->frame_control)) {
-			u16 ethertype;
-			u8 *payload;
-
-			payload = rx->skb->data +
-				ieee80211_hdrlen(hdr->frame_control);
-			ethertype = (payload[6] << 8) | payload[7];
-			if (cpu_to_be16(ethertype) ==
-			    rx->sdata->control_port_protocol)
+			unsigned int hdrlen;
+			__be16 ethertype;
+
+			hdrlen = ieee80211_hdrlen(hdr->frame_control);
+
+			if (rx->skb->len < hdrlen + 8)
+				return RX_DROP_MONITOR;
+
+			skb_copy_bits(rx->skb, hdrlen + 6, &ethertype, 2);
+			if (ethertype == rx->sdata->control_port_protocol)
 				return RX_CONTINUE;
 		}
 
@@ -1141,12 +1238,19 @@ ieee80211_rx_h_check_more_data(struct ieee80211_rx_data *rx)
 	return RX_CONTINUE;
 }
 
-static void ap_sta_ps_start(struct sta_info *sta)
+static void sta_ps_start(struct sta_info *sta)
 {
 	struct ieee80211_sub_if_data *sdata = sta->sdata;
 	struct ieee80211_local *local = sdata->local;
+	struct ps_data *ps;
+
+	if (sta->sdata->vif.type == NL80211_IFTYPE_AP ||
+	    sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
+		ps = &sdata->bss->ps;
+	else
+		return;
 
-	atomic_inc(&sdata->bss->num_sta_ps);
+	atomic_inc(&ps->num_sta_ps);
 	set_sta_flag(sta, WLAN_STA_PS_STA);
 	if (!(local->hw.flags & IEEE80211_HW_AP_LINK_PS))
 		drv_sta_notify(local, sdata, STA_NOTIFY_SLEEP, &sta->sta);
@@ -1154,7 +1258,7 @@ static void ap_sta_ps_start(struct sta_info *sta)
 	       sta->sta.addr, sta->sta.aid);
 }
 
-static void ap_sta_ps_end(struct sta_info *sta)
+static void sta_ps_end(struct sta_info *sta)
 {
 	ps_dbg(sta->sdata, "STA %pM aid %d exits power save mode\n",
 	       sta->sta.addr, sta->sta.aid);
@@ -1181,9 +1285,9 @@ int ieee80211_sta_ps_transition(struct ieee80211_sta *sta, bool start)
 		return -EINVAL;
 
 	if (start)
-		ap_sta_ps_start(sta_inf);
+		sta_ps_start(sta_inf);
 	else
-		ap_sta_ps_end(sta_inf);
+		sta_ps_end(sta_inf);
 
 	return 0;
 }
@@ -1277,17 +1381,22 @@ ieee80211_rx_h_sta_process(struct ieee80211_rx_data *rx)
 
 	/*
 	 * Update last_rx only for IBSS packets which are for the current
-	 * BSSID to avoid keeping the current IBSS network alive in cases
-	 * where other STAs start using different BSSID.
+	 * BSSID and for station already AUTHORIZED to avoid keeping the
+	 * current IBSS network alive in cases where other STAs start
+	 * using different BSSID. This will also give the station another
+	 * chance to restart the authentication/authorization in case
+	 * something went wrong the first time.
 	 */
 	if (rx->sdata->vif.type == NL80211_IFTYPE_ADHOC) {
 		u8 *bssid = ieee80211_get_bssid(hdr, rx->skb->len,
 						NL80211_IFTYPE_ADHOC);
-		if (ether_addr_equal(bssid, rx->sdata->u.ibss.bssid)) {
+		if (ether_addr_equal(bssid, rx->sdata->u.ibss.bssid) &&
+		    test_sta_flag(sta, WLAN_STA_AUTHORIZED)) {
 			sta->last_rx = jiffies;
 			if (ieee80211_is_data(hdr->frame_control)) {
 				sta->last_rx_rate_idx = status->rate_idx;
 				sta->last_rx_rate_flag = status->flag;
+				sta->last_rx_rate_vht_nss = status->vht_nss;
 			}
 		}
 	} else if (!is_multicast_ether_addr(hdr->addr1)) {
@@ -1299,6 +1408,7 @@ ieee80211_rx_h_sta_process(struct ieee80211_rx_data *rx)
 		if (ieee80211_is_data(hdr->frame_control)) {
 			sta->last_rx_rate_idx = status->rate_idx;
 			sta->last_rx_rate_flag = status->flag;
+			sta->last_rx_rate_vht_nss = status->vht_nss;
 		}
 	}
 
@@ -1335,10 +1445,10 @@ ieee80211_rx_h_sta_process(struct ieee80211_rx_data *rx)
 			 */
 			if (ieee80211_is_data(hdr->frame_control) &&
 			    !ieee80211_has_pm(hdr->frame_control))
-				ap_sta_ps_end(sta);
+				sta_ps_end(sta);
 		} else {
 			if (ieee80211_has_pm(hdr->frame_control))
-				ap_sta_ps_start(sta);
+				sta_ps_start(sta);
 		}
 	}
 
@@ -1384,9 +1494,7 @@ ieee80211_reassemble_add(struct ieee80211_sub_if_data *sdata,
 			 struct sk_buff **skb)
 {
 	struct ieee80211_fragment_entry *entry;
-	int idx;
 
-	idx = sdata->fragment_next;
 	entry = &sdata->fragments[sdata->fragment_next++];
 	if (sdata->fragment_next >= IEEE80211_FRAGMENT_MAX)
 		sdata->fragment_next = 0;
@@ -1462,11 +1570,14 @@ ieee80211_rx_h_defragment(struct ieee80211_rx_data *rx)
 
 	hdr = (struct ieee80211_hdr *)rx->skb->data;
 	fc = hdr->frame_control;
+
+	if (ieee80211_is_ctl(fc))
+		return RX_CONTINUE;
+
 	sc = le16_to_cpu(hdr->seq_ctrl);
 	frag = sc & IEEE80211_SCTL_FRAG;
 
 	if (likely((!ieee80211_has_morefrags(fc) && frag == 0) ||
-		   (rx->skb)->len < 24 ||
 		   is_multicast_ether_addr(hdr->addr1))) {
 		/* not fragmented */
 		goto out;
@@ -1570,18 +1681,15 @@ ieee80211_rx_h_defragment(struct ieee80211_rx_data *rx)
 	return RX_CONTINUE;
 }
 
-static int
-ieee80211_802_1x_port_control(struct ieee80211_rx_data *rx)
+static int ieee80211_802_1x_port_control(struct ieee80211_rx_data *rx)
 {
-	if (unlikely(!rx->sta ||
-	    !test_sta_flag(rx->sta, WLAN_STA_AUTHORIZED)))
+	if (unlikely(!rx->sta || !test_sta_flag(rx->sta, WLAN_STA_AUTHORIZED)))
 		return -EACCES;
 
 	return 0;
 }
 
-static int
-ieee80211_drop_unencrypted(struct ieee80211_rx_data *rx, __le16 fc)
+static int ieee80211_drop_unencrypted(struct ieee80211_rx_data *rx, __le16 fc)
 {
 	struct sk_buff *skb = rx->skb;
 	struct ieee80211_rx_status *status = IEEE80211_SKB_RXCB(skb);
@@ -1603,8 +1711,7 @@ ieee80211_drop_unencrypted(struct ieee80211_rx_data *rx, __le16 fc)
 	return 0;
 }
 
-static int
-ieee80211_drop_unencrypted_mgmt(struct ieee80211_rx_data *rx)
+static int ieee80211_drop_unencrypted_mgmt(struct ieee80211_rx_data *rx)
 {
 	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)rx->skb->data;
 	struct ieee80211_rx_status *status = IEEE80211_SKB_RXCB(rx->skb);
@@ -1889,6 +1996,20 @@ ieee80211_rx_h_mesh_fwding(struct ieee80211_rx_data *rx)
 
 	hdr = (struct ieee80211_hdr *) skb->data;
 	hdrlen = ieee80211_hdrlen(hdr->frame_control);
+
+	/* make sure fixed part of mesh header is there, also checks skb len */
+	if (!pskb_may_pull(rx->skb, hdrlen + 6))
+		return RX_DROP_MONITOR;
+
+	mesh_hdr = (struct ieee80211s_hdr *) (skb->data + hdrlen);
+
+	/* make sure full mesh header is there, also checks skb len */
+	if (!pskb_may_pull(rx->skb,
+			   hdrlen + ieee80211_get_mesh_hdrlen(mesh_hdr)))
+		return RX_DROP_MONITOR;
+
+	/* reload pointers */
+	hdr = (struct ieee80211_hdr *) skb->data;
 	mesh_hdr = (struct ieee80211s_hdr *) (skb->data + hdrlen);
 
 	/* frame is in RMC, don't forward */
@@ -1897,7 +2018,8 @@ ieee80211_rx_h_mesh_fwding(struct ieee80211_rx_data *rx)
 	    mesh_rmc_check(hdr->addr3, mesh_hdr, rx->sdata))
 		return RX_DROP_MONITOR;
 
-	if (!ieee80211_is_data(hdr->frame_control))
+	if (!ieee80211_is_data(hdr->frame_control) ||
+	    !(status->rx_flags & IEEE80211_RX_RA_MATCH))
 		return RX_CONTINUE;
 
 	if (!mesh_hdr->ttl)
@@ -1911,9 +2033,12 @@ ieee80211_rx_h_mesh_fwding(struct ieee80211_rx_data *rx)
 		if (is_multicast_ether_addr(hdr->addr1)) {
 			mpp_addr = hdr->addr3;
 			proxied_addr = mesh_hdr->eaddr1;
-		} else {
+		} else if (mesh_hdr->flags & MESH_FLAGS_AE_A5_A6) {
+			/* has_a4 already checked in ieee80211_rx_mesh_check */
 			mpp_addr = hdr->addr4;
 			proxied_addr = mesh_hdr->eaddr2;
+		} else {
+			return RX_DROP_MONITOR;
 		}
 
 		rcu_read_lock();
@@ -1941,12 +2066,9 @@ ieee80211_rx_h_mesh_fwding(struct ieee80211_rx_data *rx)
 	}
 	skb_set_queue_mapping(skb, q);
 
-	if (!(status->rx_flags & IEEE80211_RX_RA_MATCH))
-		goto out;
-
 	if (!--mesh_hdr->ttl) {
 		IEEE80211_IFSTA_MESH_CTR_INC(ifmsh, dropped_frames_ttl);
-		return RX_DROP_MONITOR;
+		goto out;
 	}
 
 	if (!ifmsh->mshcfg.dot11MeshForwarding)
@@ -1973,7 +2095,7 @@ ieee80211_rx_h_mesh_fwding(struct ieee80211_rx_data *rx)
 	} else {
 		/* unable to resolve next hop */
 		mesh_path_error_tx(ifmsh->mshcfg.element_ttl, fwd_hdr->addr3,
-				    0, reason, fwd_hdr->addr2, sdata);
+				   0, reason, fwd_hdr->addr2, sdata);
 		IEEE80211_IFSTA_MESH_CTR_INC(ifmsh, dropped_frames_no_route);
 		kfree_skb(fwd_skb);
 		return RX_DROP_MONITOR;
@@ -2182,7 +2304,7 @@ ieee80211_rx_h_mgmt_check(struct ieee80211_rx_data *rx)
 
 		cfg80211_report_obss_beacon(rx->local->hw.wiphy,
 					    rx->skb->data, rx->skb->len,
-					    status->freq, sig, GFP_ATOMIC);
+					    status->freq, sig);
 		rx->flags |= IEEE80211_RX_BEACON_REPORTED;
 	}
 
@@ -2211,7 +2333,8 @@ ieee80211_rx_h_action(struct ieee80211_rx_data *rx)
 	if (len < IEEE80211_MIN_ACTION_SIZE)
 		return RX_DROP_UNUSABLE;
 
-	if (!rx->sta && mgmt->u.action.category != WLAN_CATEGORY_PUBLIC)
+	if (!rx->sta && mgmt->u.action.category != WLAN_CATEGORY_PUBLIC &&
+	    mgmt->u.action.category != WLAN_CATEGORY_SELF_PROTECTED)
 		return RX_DROP_UNUSABLE;
 
 	if (!(status->rx_flags & IEEE80211_RX_RA_MATCH))
@@ -2353,6 +2476,10 @@ ieee80211_rx_h_action(struct ieee80211_rx_data *rx)
 		}
 		break;
 	case WLAN_CATEGORY_SELF_PROTECTED:
+		if (len < (IEEE80211_MIN_ACTION_SIZE +
+			   sizeof(mgmt->u.action.u.self_prot.action_code)))
+			break;
+
 		switch (mgmt->u.action.u.self_prot.action_code) {
 		case WLAN_SP_MESH_PEERING_OPEN:
 		case WLAN_SP_MESH_PEERING_CLOSE:
@@ -2371,10 +2498,14 @@ ieee80211_rx_h_action(struct ieee80211_rx_data *rx)
 		}
 		break;
 	case WLAN_CATEGORY_MESH_ACTION:
+		if (len < (IEEE80211_MIN_ACTION_SIZE +
+			   sizeof(mgmt->u.action.u.mesh_action.action_code)))
+			break;
+
 		if (!ieee80211_vif_is_mesh(&sdata->vif))
 			break;
 		if (mesh_action_is_path_sel(mgmt) &&
-		  (!mesh_path_sel_is_hwmp(sdata)))
+		    !mesh_path_sel_is_hwmp(sdata))
 			break;
 		goto queue;
 	}
@@ -2430,7 +2561,6 @@ ieee80211_rx_h_userspace_mgmt(struct ieee80211_rx_data *rx)
 		return RX_QUEUED;
 	}
 
-
 	return RX_CONTINUE;
 }
 
@@ -2560,7 +2690,7 @@ static void ieee80211_rx_cooked_monitor(struct ieee80211_rx_data *rx,
 		goto out_free_skb;
 
 	/* room for the radiotap header based on driver features */
-	needed_headroom = ieee80211_rx_radiotap_len(local, status);
+	needed_headroom = ieee80211_rx_radiotap_space(local, status);
 
 	if (skb_headroom(skb) < needed_headroom &&
 	    pskb_expand_head(skb, needed_headroom, 0, GFP_ATOMIC))
@@ -2623,7 +2753,8 @@ static void ieee80211_rx_handlers_result(struct ieee80211_rx_data *rx,
 		status = IEEE80211_SKB_RXCB((rx->skb));
 
 		sband = rx->local->hw.wiphy->bands[status->band];
-		if (!(status->flag & RX_FLAG_HT))
+		if (!(status->flag & RX_FLAG_HT) &&
+		    !(status->flag & RX_FLAG_VHT))
 			rate = &sband->bitrates[status->rate_idx];
 
 		ieee80211_rx_cooked_monitor(rx, rate);
@@ -2790,8 +2921,8 @@ static int prepare_for_handlers(struct ieee80211_rx_data *rx,
 			status->rx_flags &= ~IEEE80211_RX_RA_MATCH;
 		} else if (!rx->sta) {
 			int rate_idx;
-			if (status->flag & RX_FLAG_HT)
-				rate_idx = 0; /* TODO: HT rates */
+			if (status->flag & (RX_FLAG_HT | RX_FLAG_VHT))
+				rate_idx = 0; /* TODO: HT/VHT rates */
 			else
 				rate_idx = status->rate_idx;
 			ieee80211_ibss_rx_no_sta(sdata, bssid, hdr->addr2,
@@ -2913,10 +3044,15 @@ static void __ieee80211_rx_handle_packet(struct ieee80211_hw *hw,
 	if (ieee80211_is_data(fc) || ieee80211_is_mgmt(fc))
 		local->dot11ReceivedFragmentCount++;
 
-	if (ieee80211_is_mgmt(fc))
-		err = skb_linearize(skb);
-	else
+	if (ieee80211_is_mgmt(fc)) {
+		/* drop frame if too short for header */
+		if (skb->len < ieee80211_hdrlen(fc))
+			err = -ENOBUFS;
+		else
+			err = skb_linearize(skb);
+	} else {
 		err = !pskb_may_pull(skb, ieee80211_hdrlen(fc));
+	}
 
 	if (err) {
 		dev_kfree_skb(skb);
@@ -3010,8 +3146,7 @@ void ieee80211_rx(struct ieee80211_hw *hw, struct sk_buff *skb)
 
 	WARN_ON_ONCE(softirq_count() == 0);
 
-	if (WARN_ON(status->band < 0 ||
-		    status->band >= IEEE80211_NUM_BANDS))
+	if (WARN_ON(status->band >= IEEE80211_NUM_BANDS))
 		goto drop;
 
 	sband = local->hw.wiphy->bands[status->band];
@@ -3056,17 +3191,22 @@ void ieee80211_rx(struct ieee80211_hw *hw, struct sk_buff *skb)
 			 * hardware error. The driver should catch hardware
 			 * errors.
 			 */
-			if (WARN((status->rate_idx < 0 ||
-				 status->rate_idx > 76),
+			if (WARN(status->rate_idx > 76,
 				 "Rate marked as an HT rate but passed "
 				 "status->rate_idx is not "
 				 "an MCS index [0-76]: %d (0x%02x)\n",
 				 status->rate_idx,
 				 status->rate_idx))
 				goto drop;
+		} else if (status->flag & RX_FLAG_VHT) {
+			if (WARN_ONCE(status->rate_idx > 9 ||
+				      !status->vht_nss ||
+				      status->vht_nss > 8,
+				      "Rate marked as a VHT rate but data is invalid: MCS: %d, NSS: %d\n",
+				      status->rate_idx, status->vht_nss))
+				goto drop;
 		} else {
-			if (WARN_ON(status->rate_idx < 0 ||
-				    status->rate_idx >= sband->n_bitrates))
+			if (WARN_ON(status->rate_idx >= sband->n_bitrates))
 				goto drop;
 			rate = &sband->bitrates[status->rate_idx];
 		}