diff --git a/drivers/net/wireless/ath/ar9170/main.c b/drivers/net/wireless/ath/ar9170/main.c
index 4ef1d2fc859c..99df9ddae9cb 100644
--- a/drivers/net/wireless/ath/ar9170/main.c
+++ b/drivers/net/wireless/ath/ar9170/main.c
@@ -1555,7 +1555,7 @@ static int ar9170_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
 
 	switch (key->alg) {
 	case ALG_WEP:
-		if (key->keylen == LEN_WEP40)
+		if (key->keylen == WLAN_KEY_LEN_WEP40)
 			ktype = AR9170_ENC_ALG_WEP64;
 		else
 			ktype = AR9170_ENC_ALG_WEP128;
diff --git a/drivers/net/wireless/ath/ath5k/pcu.c b/drivers/net/wireless/ath/ath5k/pcu.c
index 579aa0a96ab8..ec35503f6a40 100644
--- a/drivers/net/wireless/ath/ath5k/pcu.c
+++ b/drivers/net/wireless/ath/ath5k/pcu.c
@@ -1038,9 +1038,9 @@ int ath5k_keycache_type(const struct ieee80211_key_conf *key)
 	case ALG_CCMP:
 		return AR5K_KEYTABLE_TYPE_CCM;
 	case ALG_WEP:
-		if (key->keylen == LEN_WEP40)
+		if (key->keylen == WLAN_KEY_LEN_WEP40)
 			return AR5K_KEYTABLE_TYPE_40;
-		else if (key->keylen == LEN_WEP104)
+		else if (key->keylen == WLAN_KEY_LEN_WEP104)
 			return AR5K_KEYTABLE_TYPE_104;
 		return -EINVAL;
 	default:
diff --git a/drivers/net/wireless/ath/ath9k/hw.c b/drivers/net/wireless/ath/ath9k/hw.c
index 4acfab514916..1579c9407ed5 100644
--- a/drivers/net/wireless/ath/ath9k/hw.c
+++ b/drivers/net/wireless/ath/ath9k/hw.c
@@ -2472,14 +2472,14 @@ bool ath9k_hw_set_keycache_entry(struct ath_hw *ah, u16 entry,
 		}
 		break;
 	case ATH9K_CIPHER_WEP:
-		if (k->kv_len < LEN_WEP40) {
+		if (k->kv_len < WLAN_KEY_LEN_WEP40) {
 			DPRINTF(ah->ah_sc, ATH_DBG_ANY,
 				"WEP key length %u too small\n", k->kv_len);
 			return false;
 		}
-		if (k->kv_len <= LEN_WEP40)
+		if (k->kv_len <= WLAN_KEY_LEN_WEP40)
 			keyType = AR_KEYTABLE_TYPE_40;
-		else if (k->kv_len <= LEN_WEP104)
+		else if (k->kv_len <= WLAN_KEY_LEN_WEP104)
 			keyType = AR_KEYTABLE_TYPE_104;
 		else
 			keyType = AR_KEYTABLE_TYPE_128;
@@ -2498,7 +2498,7 @@ bool ath9k_hw_set_keycache_entry(struct ath_hw *ah, u16 entry,
 	key2 = get_unaligned_le32(k->kv_val + 6);
 	key3 = get_unaligned_le16(k->kv_val + 10);
 	key4 = get_unaligned_le32(k->kv_val + 12);
-	if (k->kv_len <= LEN_WEP104)
+	if (k->kv_len <= WLAN_KEY_LEN_WEP104)
 		key4 &= 0xff;
 
 	/*
diff --git a/drivers/net/wireless/b43/main.c b/drivers/net/wireless/b43/main.c
index ec8516eadc4f..cb4a8712946a 100644
--- a/drivers/net/wireless/b43/main.c
+++ b/drivers/net/wireless/b43/main.c
@@ -3637,7 +3637,7 @@ static int b43_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
 	err = -EINVAL;
 	switch (key->alg) {
 	case ALG_WEP:
-		if (key->keylen == LEN_WEP40)
+		if (key->keylen == WLAN_KEY_LEN_WEP40)
 			algorithm = B43_SEC_ALGO_WEP40;
 		else
 			algorithm = B43_SEC_ALGO_WEP104;
diff --git a/drivers/net/wireless/rt2x00/rt2x00crypto.c b/drivers/net/wireless/rt2x00/rt2x00crypto.c
index 57ab42cfed34..bc4e81e21841 100644
--- a/drivers/net/wireless/rt2x00/rt2x00crypto.c
+++ b/drivers/net/wireless/rt2x00/rt2x00crypto.c
@@ -33,7 +33,7 @@ enum cipher rt2x00crypto_key_to_cipher(struct ieee80211_key_conf *key)
 {
 	switch (key->alg) {
 	case ALG_WEP:
-		if (key->keylen == LEN_WEP40)
+		if (key->keylen == WLAN_KEY_LEN_WEP40)
 			return CIPHER_WEP64;
 		else
 			return CIPHER_WEP128;
diff --git a/include/linux/ieee80211.h b/include/linux/ieee80211.h
index 05c29c01174c..34de8b21f6d4 100644
--- a/include/linux/ieee80211.h
+++ b/include/linux/ieee80211.h
@@ -493,6 +493,7 @@ struct ieee80211s_hdr {
 /* Mesh flags */
 #define MESH_FLAGS_AE_A4 	0x1
 #define MESH_FLAGS_AE_A5_A6	0x2
+#define MESH_FLAGS_AE		0x3
 #define MESH_FLAGS_PS_DEEP	0x4
 
 /**
@@ -1085,6 +1086,14 @@ enum ieee80211_spectrum_mgmt_actioncode {
 	WLAN_ACTION_SPCT_CHL_SWITCH = 4,
 };
 
+/* Security key length */
+enum ieee80211_key_len {
+	WLAN_KEY_LEN_WEP40 = 5,
+	WLAN_KEY_LEN_WEP104 = 13,
+	WLAN_KEY_LEN_CCMP = 16,
+	WLAN_KEY_LEN_TKIP = 32,
+};
+
 /*
  * IEEE 802.11-2007 7.3.2.9 Country information element
  *
diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index 389f1d20adf4..f20da7d63b1e 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -1244,6 +1244,53 @@ extern int ieee80211_radiotap_iterator_init(
 extern int ieee80211_radiotap_iterator_next(
    struct ieee80211_radiotap_iterator *iterator);
 
+extern const unsigned char rfc1042_header[6];
+extern const unsigned char bridge_tunnel_header[6];
+
+/**
+ * ieee80211_get_hdrlen_from_skb - get header length from data
+ *
+ * Given an skb with a raw 802.11 header at the data pointer this function
+ * returns the 802.11 header length in bytes (not including encryption
+ * headers). If the data in the sk_buff is too short to contain a valid 802.11
+ * header the function returns 0.
+ *
+ * @skb: the frame
+ */
+unsigned int ieee80211_get_hdrlen_from_skb(const struct sk_buff *skb);
+
+/**
+ * ieee80211_hdrlen - get header length in bytes from frame control
+ * @fc: frame control field in little-endian format
+ */
+unsigned int ieee80211_hdrlen(__le16 fc);
+
+/**
+ * ieee80211_data_to_8023 - convert an 802.11 data frame to 802.3
+ * @skb: the 802.11 data frame
+ * @addr: the device MAC address
+ * @iftype: the virtual interface type
+ */
+int ieee80211_data_to_8023(struct sk_buff *skb, u8 *addr,
+			   enum nl80211_iftype iftype);
+
+/**
+ * ieee80211_data_from_8023 - convert an 802.3 frame to 802.11
+ * @skb: the 802.3 frame
+ * @addr: the device MAC address
+ * @iftype: the virtual interface type
+ * @bssid: the network bssid (used only for iftype STATION and ADHOC)
+ * @qos: build 802.11 QoS data frame
+ */
+int ieee80211_data_from_8023(struct sk_buff *skb, u8 *addr,
+			     enum nl80211_iftype iftype, u8 *bssid, bool qos);
+
+/**
+ * cfg80211_classify8021d - determine the 802.1p/1d tag for a data frame
+ * @skb: the data frame
+ */
+unsigned int cfg80211_classify8021d(struct sk_buff *skb);
+
 /*
  * Regulatory helper functions for wiphys
  */
diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index 2d0610581efc..d72346ff3247 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -671,16 +671,6 @@ enum ieee80211_key_alg {
 	ALG_AES_CMAC,
 };
 
-/**
- * enum ieee80211_key_len - key length
- * @LEN_WEP40: WEP 5-byte long key
- * @LEN_WEP104: WEP 13-byte long key
- */
-enum ieee80211_key_len {
-	LEN_WEP40 = 5,
-	LEN_WEP104 = 13,
-};
-
 /**
  * enum ieee80211_key_flags - key flags
  *
@@ -1811,24 +1801,6 @@ __le16 ieee80211_generic_frame_duration(struct ieee80211_hw *hw,
 struct sk_buff *
 ieee80211_get_buffered_bc(struct ieee80211_hw *hw, struct ieee80211_vif *vif);
 
-/**
- * ieee80211_get_hdrlen_from_skb - get header length from data
- *
- * Given an skb with a raw 802.11 header at the data pointer this function
- * returns the 802.11 header length in bytes (not including encryption
- * headers). If the data in the sk_buff is too short to contain a valid 802.11
- * header the function returns 0.
- *
- * @skb: the frame
- */
-unsigned int ieee80211_get_hdrlen_from_skb(const struct sk_buff *skb);
-
-/**
- * ieee80211_hdrlen - get header length in bytes from frame control
- * @fc: frame control field in little-endian format
- */
-unsigned int ieee80211_hdrlen(__le16 fc);
-
 /**
  * ieee80211_get_tkip_key - get a TKIP rc4 for skb
  *
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index 8db8d16d206c..c088c46704a3 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -1085,8 +1085,6 @@ static inline int __ieee80211_resume(struct ieee80211_hw *hw)
 
 /* utility functions/constants */
 extern void *mac80211_wiphy_privid; /* for wiphy privid */
-extern const unsigned char rfc1042_header[6];
-extern const unsigned char bridge_tunnel_header[6];
 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
 			enum nl80211_iftype type);
 int ieee80211_frame_duration(struct ieee80211_local *local, size_t len,
diff --git a/net/mac80211/mesh.h b/net/mac80211/mesh.h
index 832bb503ca9b..c7d72819cdd2 100644
--- a/net/mac80211/mesh.h
+++ b/net/mac80211/mesh.h
@@ -191,12 +191,8 @@ struct mesh_rmc {
 #define PLINK_CATEGORY		30
 #define MESH_PATH_SEL_CATEGORY	32
 
-/* Mesh Header Flags */
-#define IEEE80211S_FLAGS_AE	0x3
-
 /* Public interfaces */
 /* Various */
-int ieee80211_get_mesh_hdrlen(struct ieee80211s_hdr *meshhdr);
 int ieee80211_new_mesh_header(struct ieee80211s_hdr *meshhdr,
 		struct ieee80211_sub_if_data *sdata);
 int mesh_rmc_check(u8 *addr, struct ieee80211s_hdr *mesh_hdr,
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index f3a041cc5dcf..6a9b8e63a6bf 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -1247,93 +1247,12 @@ ieee80211_drop_unencrypted(struct ieee80211_rx_data *rx, __le16 fc)
 }
 
 static int
-ieee80211_data_to_8023(struct ieee80211_rx_data *rx)
+__ieee80211_data_to_8023(struct ieee80211_rx_data *rx)
 {
 	struct net_device *dev = rx->dev;
-	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) rx->skb->data;
-	u16 hdrlen, ethertype;
-	u8 *payload;
-	u8 dst[ETH_ALEN];
-	u8 src[ETH_ALEN] __aligned(2);
-	struct sk_buff *skb = rx->skb;
 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 
-	if (unlikely(!ieee80211_is_data_present(hdr->frame_control)))
-		return -1;
-
-	hdrlen = ieee80211_hdrlen(hdr->frame_control);
-
-	/* convert IEEE 802.11 header + possible LLC headers into Ethernet
-	 * header
-	 * IEEE 802.11 address fields:
-	 * ToDS FromDS Addr1 Addr2 Addr3 Addr4
-	 *   0     0   DA    SA    BSSID n/a
-	 *   0     1   DA    BSSID SA    n/a
-	 *   1     0   BSSID SA    DA    n/a
-	 *   1     1   RA    TA    DA    SA
-	 */
-	memcpy(dst, ieee80211_get_DA(hdr), ETH_ALEN);
-	memcpy(src, ieee80211_get_SA(hdr), ETH_ALEN);
-
-	switch (hdr->frame_control &
-		cpu_to_le16(IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) {
-	case cpu_to_le16(IEEE80211_FCTL_TODS):
-		if (unlikely(sdata->vif.type != NL80211_IFTYPE_AP &&
-			     sdata->vif.type != NL80211_IFTYPE_AP_VLAN))
-			return -1;
-		break;
-	case cpu_to_le16(IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS):
-		if (unlikely(sdata->vif.type != NL80211_IFTYPE_WDS &&
-			     sdata->vif.type != NL80211_IFTYPE_MESH_POINT))
-			return -1;
-		if (ieee80211_vif_is_mesh(&sdata->vif)) {
-			struct ieee80211s_hdr *meshdr = (struct ieee80211s_hdr *)
-				(skb->data + hdrlen);
-			hdrlen += ieee80211_get_mesh_hdrlen(meshdr);
-			if (meshdr->flags & MESH_FLAGS_AE_A5_A6) {
-				memcpy(dst, meshdr->eaddr1, ETH_ALEN);
-				memcpy(src, meshdr->eaddr2, ETH_ALEN);
-			}
-		}
-		break;
-	case cpu_to_le16(IEEE80211_FCTL_FROMDS):
-		if (sdata->vif.type != NL80211_IFTYPE_STATION ||
-		    (is_multicast_ether_addr(dst) &&
-		     !compare_ether_addr(src, dev->dev_addr)))
-			return -1;
-		break;
-	case cpu_to_le16(0):
-		if (sdata->vif.type != NL80211_IFTYPE_ADHOC)
-			return -1;
-		break;
-	}
-
-	if (unlikely(skb->len - hdrlen < 8))
-		return -1;
-
-	payload = skb->data + hdrlen;
-	ethertype = (payload[6] << 8) | payload[7];
-
-	if (likely((compare_ether_addr(payload, rfc1042_header) == 0 &&
-		    ethertype != ETH_P_AARP && ethertype != ETH_P_IPX) ||
-		   compare_ether_addr(payload, bridge_tunnel_header) == 0)) {
-		/* remove RFC1042 or Bridge-Tunnel encapsulation and
-		 * replace EtherType */
-		skb_pull(skb, hdrlen + 6);
-		memcpy(skb_push(skb, ETH_ALEN), src, ETH_ALEN);
-		memcpy(skb_push(skb, ETH_ALEN), dst, ETH_ALEN);
-	} else {
-		struct ethhdr *ehdr;
-		__be16 len;
-
-		skb_pull(skb, hdrlen);
-		len = htons(skb->len);
-		ehdr = (struct ethhdr *) skb_push(skb, sizeof(struct ethhdr));
-		memcpy(ehdr->h_dest, dst, ETH_ALEN);
-		memcpy(ehdr->h_source, src, ETH_ALEN);
-		ehdr->h_proto = len;
-	}
-	return 0;
+	return ieee80211_data_to_8023(rx->skb, dev->dev_addr, sdata->vif.type);
 }
 
 /*
@@ -1472,7 +1391,7 @@ ieee80211_rx_h_amsdu(struct ieee80211_rx_data *rx)
 	if (!(rx->flags & IEEE80211_RX_AMSDU))
 		return RX_CONTINUE;
 
-	err = ieee80211_data_to_8023(rx);
+	err = __ieee80211_data_to_8023(rx);
 	if (unlikely(err))
 		return RX_DROP_UNUSABLE;
 
@@ -1658,7 +1577,7 @@ ieee80211_rx_h_data(struct ieee80211_rx_data *rx)
 	if (unlikely(!ieee80211_is_data_present(hdr->frame_control)))
 		return RX_DROP_MONITOR;
 
-	err = ieee80211_data_to_8023(rx);
+	err = __ieee80211_data_to_8023(rx);
 	if (unlikely(err))
 		return RX_DROP_UNUSABLE;
 
diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index ffb6e88f2ecd..949d857debd8 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -35,15 +35,6 @@
 /* privid for wiphys to determine whether they belong to us or not */
 void *mac80211_wiphy_privid = &mac80211_wiphy_privid;
 
-/* See IEEE 802.1H for LLC/SNAP encapsulation/decapsulation */
-/* Ethernet-II snap header (RFC1042 for most EtherTypes) */
-const unsigned char rfc1042_header[] __aligned(2) =
-	{ 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
-
-/* Bridge-Tunnel header (for EtherTypes ETH_P_AARP and ETH_P_IPX) */
-const unsigned char bridge_tunnel_header[] __aligned(2) =
-	{ 0xaa, 0xaa, 0x03, 0x00, 0x00, 0xf8 };
-
 struct ieee80211_hw *wiphy_to_ieee80211_hw(struct wiphy *wiphy)
 {
 	struct ieee80211_local *local;
@@ -103,70 +94,6 @@ u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
 	return NULL;
 }
 
-unsigned int ieee80211_hdrlen(__le16 fc)
-{
-	unsigned int hdrlen = 24;
-
-	if (ieee80211_is_data(fc)) {
-		if (ieee80211_has_a4(fc))
-			hdrlen = 30;
-		if (ieee80211_is_data_qos(fc))
-			hdrlen += IEEE80211_QOS_CTL_LEN;
-		goto out;
-	}
-
-	if (ieee80211_is_ctl(fc)) {
-		/*
-		 * ACK and CTS are 10 bytes, all others 16. To see how
-		 * to get this condition consider
-		 *   subtype mask:   0b0000000011110000 (0x00F0)
-		 *   ACK subtype:    0b0000000011010000 (0x00D0)
-		 *   CTS subtype:    0b0000000011000000 (0x00C0)
-		 *   bits that matter:         ^^^      (0x00E0)
-		 *   value of those: 0b0000000011000000 (0x00C0)
-		 */
-		if ((fc & cpu_to_le16(0x00E0)) == cpu_to_le16(0x00C0))
-			hdrlen = 10;
-		else
-			hdrlen = 16;
-	}
-out:
-	return hdrlen;
-}
-EXPORT_SYMBOL(ieee80211_hdrlen);
-
-unsigned int ieee80211_get_hdrlen_from_skb(const struct sk_buff *skb)
-{
-	const struct ieee80211_hdr *hdr = (const struct ieee80211_hdr *)skb->data;
-	unsigned int hdrlen;
-
-	if (unlikely(skb->len < 10))
-		return 0;
-	hdrlen = ieee80211_hdrlen(hdr->frame_control);
-	if (unlikely(hdrlen > skb->len))
-		return 0;
-	return hdrlen;
-}
-EXPORT_SYMBOL(ieee80211_get_hdrlen_from_skb);
-
-int ieee80211_get_mesh_hdrlen(struct ieee80211s_hdr *meshhdr)
-{
-	int ae = meshhdr->flags & IEEE80211S_FLAGS_AE;
-	/* 7.1.3.5a.2 */
-	switch (ae) {
-	case 0:
-		return 6;
-	case 1:
-		return 12;
-	case 2:
-		return 18;
-	case 3:
-		return 24;
-	default:
-		return 6;
-	}
-}
-
 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx)
 {
 	struct sk_buff *skb = tx->skb;
diff --git a/net/mac80211/wme.c b/net/mac80211/wme.c
index 45b74f38b867..694343b9102b 100644
--- a/net/mac80211/wme.c
+++ b/net/mac80211/wme.c
@@ -23,34 +23,6 @@
  */
 const int ieee802_1d_to_ac[8] = { 2, 3, 3, 2, 1, 1, 0, 0 };
 
-static const char llc_ip_hdr[8] = {0xAA, 0xAA, 0x3, 0, 0, 0, 0x08, 0};
-
-/* Given a data frame determine the 802.1p/1d tag to use.  */
-static unsigned int classify_1d(struct sk_buff *skb)
-{
-	unsigned int dscp;
-
-	/* skb->priority values from 256->263 are magic values to
-	 * directly indicate a specific 802.1d priority.  This is used
-	 * to allow 802.1d priority to be passed directly in from VLAN
-	 * tags, etc.
-	 */
-	if (skb->priority >= 256 && skb->priority <= 263)
-		return skb->priority - 256;
-
-	switch (skb->protocol) {
-	case htons(ETH_P_IP):
-		dscp = ip_hdr(skb)->tos & 0xfc;
-		break;
-
-	default:
-		return 0;
-	}
-
-	return dscp >> 5;
-}
-
-
 static int wme_downgrade_ac(struct sk_buff *skb)
 {
 	switch (skb->priority) {
@@ -94,7 +66,7 @@ static u16 classify80211(struct ieee80211_local *local, struct sk_buff *skb)
 
 	/* use the data classifier to determine what 802.1d tag the
 	 * data frame has */
-	skb->priority = classify_1d(skb);
+	skb->priority = cfg80211_classify8021d(skb);
 
 	/* in case we are a client verify acm is not set for this ac */
 	while (unlikely(local->wmm_acm & BIT(skb->priority))) {
diff --git a/net/wireless/util.c b/net/wireless/util.c
index b94c8604ad7c..d072bff463aa 100644
--- a/net/wireless/util.c
+++ b/net/wireless/util.c
@@ -4,7 +4,9 @@
  * Copyright 2007-2009	Johannes Berg <johannes@sipsolutions.net>
  */
 #include <linux/bitops.h>
+#include <linux/etherdevice.h>
 #include <net/cfg80211.h>
+#include <net/ip.h>
 #include "core.h"
 
 struct ieee80211_rate *
@@ -198,3 +200,306 @@ int cfg80211_validate_key_settings(struct key_params *params, int key_idx,
 
 	return 0;
 }
+
+/* See IEEE 802.1H for LLC/SNAP encapsulation/decapsulation */
+/* Ethernet-II snap header (RFC1042 for most EtherTypes) */
+const unsigned char rfc1042_header[] __aligned(2) =
+	{ 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
+EXPORT_SYMBOL(rfc1042_header);
+
+/* Bridge-Tunnel header (for EtherTypes ETH_P_AARP and ETH_P_IPX) */
+const unsigned char bridge_tunnel_header[] __aligned(2) =
+	{ 0xaa, 0xaa, 0x03, 0x00, 0x00, 0xf8 };
+EXPORT_SYMBOL(bridge_tunnel_header);
+
+unsigned int ieee80211_hdrlen(__le16 fc)
+{
+	unsigned int hdrlen = 24;
+
+	if (ieee80211_is_data(fc)) {
+		if (ieee80211_has_a4(fc))
+			hdrlen = 30;
+		if (ieee80211_is_data_qos(fc))
+			hdrlen += IEEE80211_QOS_CTL_LEN;
+		goto out;
+	}
+
+	if (ieee80211_is_ctl(fc)) {
+		/*
+		 * ACK and CTS are 10 bytes, all others 16. To see how
+		 * to get this condition consider
+		 *   subtype mask:   0b0000000011110000 (0x00F0)
+		 *   ACK subtype:    0b0000000011010000 (0x00D0)
+		 *   CTS subtype:    0b0000000011000000 (0x00C0)
+		 *   bits that matter:         ^^^      (0x00E0)
+		 *   value of those: 0b0000000011000000 (0x00C0)
+		 */
+		if ((fc & cpu_to_le16(0x00E0)) == cpu_to_le16(0x00C0))
+			hdrlen = 10;
+		else
+			hdrlen = 16;
+	}
+out:
+	return hdrlen;
+}
+EXPORT_SYMBOL(ieee80211_hdrlen);
+
+unsigned int ieee80211_get_hdrlen_from_skb(const struct sk_buff *skb)
+{
+	const struct ieee80211_hdr *hdr =
+			(const struct ieee80211_hdr *)skb->data;
+	unsigned int hdrlen;
+
+	if (unlikely(skb->len < 10))
+		return 0;
+	hdrlen = ieee80211_hdrlen(hdr->frame_control);
+	if (unlikely(hdrlen > skb->len))
+		return 0;
+	return hdrlen;
+}
+EXPORT_SYMBOL(ieee80211_get_hdrlen_from_skb);
+
+int ieee80211_get_mesh_hdrlen(struct ieee80211s_hdr *meshhdr)
+{
+	int ae = meshhdr->flags & MESH_FLAGS_AE;
+	/* 7.1.3.5a.2 */
+	switch (ae) {
+	case 0:
+		return 6;
+	case 1:
+		return 12;
+	case 2:
+		return 18;
+	case 3:
+		return 24;
+	default:
+		return 6;
+	}
+}
+
+int ieee80211_data_to_8023(struct sk_buff *skb, u8 *addr,
+			   enum nl80211_iftype iftype)
+{
+	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
+	u16 hdrlen, ethertype;
+	u8 *payload;
+	u8 dst[ETH_ALEN];
+	u8 src[ETH_ALEN] __aligned(2);
+
+	if (unlikely(!ieee80211_is_data_present(hdr->frame_control)))
+		return -1;
+
+	hdrlen = ieee80211_hdrlen(hdr->frame_control);
+
+	/* convert IEEE 802.11 header + possible LLC headers into Ethernet
+	 * header
+	 * IEEE 802.11 address fields:
+	 * ToDS FromDS Addr1 Addr2 Addr3 Addr4
+	 *   0     0   DA    SA    BSSID n/a
+	 *   0     1   DA    BSSID SA    n/a
+	 *   1     0   BSSID SA    DA    n/a
+	 *   1     1   RA    TA    DA    SA
+	 */
+	memcpy(dst, ieee80211_get_DA(hdr), ETH_ALEN);
+	memcpy(src, ieee80211_get_SA(hdr), ETH_ALEN);
+
+	switch (hdr->frame_control &
+		cpu_to_le16(IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) {
+	case cpu_to_le16(IEEE80211_FCTL_TODS):
+		if (unlikely(iftype != NL80211_IFTYPE_AP &&
+			     iftype != NL80211_IFTYPE_AP_VLAN))
+			return -1;
+		break;
+	case cpu_to_le16(IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS):
+		if (unlikely(iftype != NL80211_IFTYPE_WDS &&
+			     iftype != NL80211_IFTYPE_MESH_POINT))
+			return -1;
+		if (iftype == NL80211_IFTYPE_MESH_POINT) {
+			struct ieee80211s_hdr *meshdr =
+				(struct ieee80211s_hdr *) (skb->data + hdrlen);
+			hdrlen += ieee80211_get_mesh_hdrlen(meshdr);
+			if (meshdr->flags & MESH_FLAGS_AE_A5_A6) {
+				memcpy(dst, meshdr->eaddr1, ETH_ALEN);
+				memcpy(src, meshdr->eaddr2, ETH_ALEN);
+			}
+		}
+		break;
+	case cpu_to_le16(IEEE80211_FCTL_FROMDS):
+		if (iftype != NL80211_IFTYPE_STATION ||
+		    (is_multicast_ether_addr(dst) &&
+		     !compare_ether_addr(src, addr)))
+			return -1;
+		break;
+	case cpu_to_le16(0):
+		if (iftype != NL80211_IFTYPE_ADHOC)
+			return -1;
+		break;
+	}
+
+	if (unlikely(skb->len - hdrlen < 8))
+		return -1;
+
+	payload = skb->data + hdrlen;
+	ethertype = (payload[6] << 8) | payload[7];
+
+	if (likely((compare_ether_addr(payload, rfc1042_header) == 0 &&
+		    ethertype != ETH_P_AARP && ethertype != ETH_P_IPX) ||
+		   compare_ether_addr(payload, bridge_tunnel_header) == 0)) {
+		/* remove RFC1042 or Bridge-Tunnel encapsulation and
+		 * replace EtherType */
+		skb_pull(skb, hdrlen + 6);
+		memcpy(skb_push(skb, ETH_ALEN), src, ETH_ALEN);
+		memcpy(skb_push(skb, ETH_ALEN), dst, ETH_ALEN);
+	} else {
+		struct ethhdr *ehdr;
+		__be16 len;
+
+		skb_pull(skb, hdrlen);
+		len = htons(skb->len);
+		ehdr = (struct ethhdr *) skb_push(skb, sizeof(struct ethhdr));
+		memcpy(ehdr->h_dest, dst, ETH_ALEN);
+		memcpy(ehdr->h_source, src, ETH_ALEN);
+		ehdr->h_proto = len;
+	}
+	return 0;
+}
+EXPORT_SYMBOL(ieee80211_data_to_8023);
+
+int ieee80211_data_from_8023(struct sk_buff *skb, u8 *addr,
+			     enum nl80211_iftype iftype, u8 *bssid, bool qos)
+{
+	struct ieee80211_hdr hdr;
+	u16 hdrlen, ethertype;
+	__le16 fc;
+	const u8 *encaps_data;
+	int encaps_len, skip_header_bytes;
+	int nh_pos, h_pos;
+	int head_need;
+
+	if (unlikely(skb->len < ETH_HLEN))
+		return -EINVAL;
+
+	nh_pos = skb_network_header(skb) - skb->data;
+	h_pos = skb_transport_header(skb) - skb->data;
+
+	/* convert Ethernet header to proper 802.11 header (based on
+	 * operation mode) */
+	ethertype = (skb->data[12] << 8) | skb->data[13];
+	fc = cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_DATA);
+
+	switch (iftype) {
+	case NL80211_IFTYPE_AP:
+	case NL80211_IFTYPE_AP_VLAN:
+		fc |= cpu_to_le16(IEEE80211_FCTL_FROMDS);
+		/* DA BSSID SA */
+		memcpy(hdr.addr1, skb->data, ETH_ALEN);
+		memcpy(hdr.addr2, addr, ETH_ALEN);
+		memcpy(hdr.addr3, skb->data + ETH_ALEN, ETH_ALEN);
+		hdrlen = 24;
+		break;
+	case NL80211_IFTYPE_STATION:
+		fc |= cpu_to_le16(IEEE80211_FCTL_TODS);
+		/* BSSID SA DA */
+		memcpy(hdr.addr1, bssid, ETH_ALEN);
+		memcpy(hdr.addr2, skb->data + ETH_ALEN, ETH_ALEN);
+		memcpy(hdr.addr3, skb->data, ETH_ALEN);
+		hdrlen = 24;
+		break;
+	case NL80211_IFTYPE_ADHOC:
+		/* DA SA BSSID */
+		memcpy(hdr.addr1, skb->data, ETH_ALEN);
+		memcpy(hdr.addr2, skb->data + ETH_ALEN, ETH_ALEN);
+		memcpy(hdr.addr3, bssid, ETH_ALEN);
+		hdrlen = 24;
+		break;
+	default:
+		return -EOPNOTSUPP;
+	}
+
+	if (qos) {
+		fc |= cpu_to_le16(IEEE80211_STYPE_QOS_DATA);
+		hdrlen += 2;
+	}
+
+	hdr.frame_control = fc;
+	hdr.duration_id = 0;
+	hdr.seq_ctrl = 0;
+
+	skip_header_bytes = ETH_HLEN;
+	if (ethertype == ETH_P_AARP || ethertype == ETH_P_IPX) {
+		encaps_data = bridge_tunnel_header;
+		encaps_len = sizeof(bridge_tunnel_header);
+		skip_header_bytes -= 2;
+	} else if (ethertype > 0x600) {
+		encaps_data = rfc1042_header;
+		encaps_len = sizeof(rfc1042_header);
+		skip_header_bytes -= 2;
+	} else {
+		encaps_data = NULL;
+		encaps_len = 0;
+	}
+
+	skb_pull(skb, skip_header_bytes);
+	nh_pos -= skip_header_bytes;
+	h_pos -= skip_header_bytes;
+
+	head_need = hdrlen + encaps_len - skb_headroom(skb);
+
+	if (head_need > 0 || skb_cloned(skb)) {
+		head_need = max(head_need, 0);
+		if (head_need)
+			skb_orphan(skb);
+
+		if (pskb_expand_head(skb, head_need, 0, GFP_ATOMIC)) {
+			printk(KERN_ERR "failed to reallocate Tx buffer\n");
+			return -ENOMEM;
+		}
+		skb->truesize += head_need;
+	}
+
+	if (encaps_data) {
+		memcpy(skb_push(skb, encaps_len), encaps_data, encaps_len);
+		nh_pos += encaps_len;
+		h_pos += encaps_len;
+	}
+
+	memcpy(skb_push(skb, hdrlen), &hdr, hdrlen);
+
+	nh_pos += hdrlen;
+	h_pos += hdrlen;
+
+	/* Update skb pointers to various headers since this modified frame
+	 * is going to go through Linux networking code that may potentially
+	 * need things like pointer to IP header. */
+	skb_set_mac_header(skb, 0);
+	skb_set_network_header(skb, nh_pos);
+	skb_set_transport_header(skb, h_pos);
+
+	return 0;
+}
+EXPORT_SYMBOL(ieee80211_data_from_8023);
+
+/* Given a data frame determine the 802.1p/1d tag to use. */
+unsigned int cfg80211_classify8021d(struct sk_buff *skb)
+{
+	unsigned int dscp;
+
+	/* skb->priority values from 256->263 are magic values to
+	 * directly indicate a specific 802.1d priority.  This is used
+	 * to allow 802.1d priority to be passed directly in from VLAN
+	 * tags, etc.
+	 */
+	if (skb->priority >= 256 && skb->priority <= 263)
+		return skb->priority - 256;
+
+	switch (skb->protocol) {
+	case htons(ETH_P_IP):
+		dscp = ip_hdr(skb)->tos & 0xfc;
+		break;
+	default:
+		return 0;
+	}
+
+	return dscp >> 5;
+}
+EXPORT_SYMBOL(cfg80211_classify8021d);