1 files changed, 223 insertions, 303 deletions

diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index 0941e5d6a52..6a88e8f9bff 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -61,22 +61,147 @@ static inline int should_drop_frame(struct ieee80211_rx_status *status,
 				    int present_fcs_len,
 				    int radiotap_len)
 {
-	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
+	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
 
 	if (status->flag & (RX_FLAG_FAILED_FCS_CRC | RX_FLAG_FAILED_PLCP_CRC))
 		return 1;
 	if (unlikely(skb->len < 16 + present_fcs_len + radiotap_len))
 		return 1;
-	if (((hdr->frame_control & cpu_to_le16(IEEE80211_FCTL_FTYPE)) ==
-			cpu_to_le16(IEEE80211_FTYPE_CTL)) &&
-	    ((hdr->frame_control & cpu_to_le16(IEEE80211_FCTL_STYPE)) !=
-			cpu_to_le16(IEEE80211_STYPE_PSPOLL)) &&
-	    ((hdr->frame_control & cpu_to_le16(IEEE80211_FCTL_STYPE)) !=
-			cpu_to_le16(IEEE80211_STYPE_BACK_REQ)))
+	if (ieee80211_is_ctl(hdr->frame_control) &&
+	    !ieee80211_is_pspoll(hdr->frame_control) &&
+	    !ieee80211_is_back_req(hdr->frame_control))
 		return 1;
 	return 0;
 }
 
+static int
+ieee80211_rx_radiotap_len(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_TSFT)
+		len += 8;
+	if (local->hw.flags & IEEE80211_HW_SIGNAL_DB ||
+	    local->hw.flags & IEEE80211_HW_SIGNAL_DBM)
+		len += 1;
+	if (local->hw.flags & IEEE80211_HW_NOISE_DBM)
+		len += 1;
+
+	if (len & 1) /* padding for RX_FLAGS if necessary */
+		len++;
+
+	/* make sure radiotap starts at a naturally aligned address */
+	if (len % 8)
+		len = roundup(len, 8);
+
+	return len;
+}
+
+/**
+ * ieee80211_add_rx_radiotap_header - add radiotap header
+ *
+ * add a radiotap header containing all the fields which the hardware provided.
+ */
+static void
+ieee80211_add_rx_radiotap_header(struct ieee80211_local *local,
+				 struct sk_buff *skb,
+				 struct ieee80211_rx_status *status,
+				 struct ieee80211_rate *rate,
+				 int rtap_len)
+{
+	struct ieee80211_radiotap_header *rthdr;
+	unsigned char *pos;
+
+	rthdr = (struct ieee80211_radiotap_header *)skb_push(skb, rtap_len);
+	memset(rthdr, 0, rtap_len);
+
+	/* radiotap header, set always present flags */
+	rthdr->it_present =
+		cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
+			    (1 << IEEE80211_RADIOTAP_RATE) |
+			    (1 << IEEE80211_RADIOTAP_CHANNEL) |
+			    (1 << IEEE80211_RADIOTAP_ANTENNA) |
+			    (1 << IEEE80211_RADIOTAP_RX_FLAGS));
+	rthdr->it_len = cpu_to_le16(rtap_len);
+
+	pos = (unsigned char *)(rthdr+1);
+
+	/* the order of the following fields is important */
+
+	/* IEEE80211_RADIOTAP_TSFT */
+	if (status->flag & RX_FLAG_TSFT) {
+		*(__le64 *)pos = cpu_to_le64(status->mactime);
+		rthdr->it_present |=
+			cpu_to_le32(1 << IEEE80211_RADIOTAP_TSFT);
+		pos += 8;
+	}
+
+	/* IEEE80211_RADIOTAP_FLAGS */
+	if (local->hw.flags & IEEE80211_HW_RX_INCLUDES_FCS)
+		*pos |= IEEE80211_RADIOTAP_F_FCS;
+	pos++;
+
+	/* IEEE80211_RADIOTAP_RATE */
+	*pos = rate->bitrate / 5;
+	pos++;
+
+	/* IEEE80211_RADIOTAP_CHANNEL */
+	*(__le16 *)pos = cpu_to_le16(status->freq);
+	pos += 2;
+	if (status->band == IEEE80211_BAND_5GHZ)
+		*(__le16 *)pos = cpu_to_le16(IEEE80211_CHAN_OFDM |
+					     IEEE80211_CHAN_5GHZ);
+	else
+		*(__le16 *)pos = cpu_to_le16(IEEE80211_CHAN_DYN |
+					     IEEE80211_CHAN_2GHZ);
+	pos += 2;
+
+	/* IEEE80211_RADIOTAP_DBM_ANTSIGNAL */
+	if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM) {
+		*pos = status->signal;
+		rthdr->it_present |=
+			cpu_to_le32(1 << IEEE80211_RADIOTAP_DBM_ANTSIGNAL);
+		pos++;
+	}
+
+	/* IEEE80211_RADIOTAP_DBM_ANTNOISE */
+	if (local->hw.flags & IEEE80211_HW_NOISE_DBM) {
+		*pos = status->noise;
+		rthdr->it_present |=
+			cpu_to_le32(1 << IEEE80211_RADIOTAP_DBM_ANTNOISE);
+		pos++;
+	}
+
+	/* IEEE80211_RADIOTAP_LOCK_QUALITY is missing */
+
+	/* IEEE80211_RADIOTAP_ANTENNA */
+	*pos = status->antenna;
+	pos++;
+
+	/* IEEE80211_RADIOTAP_DB_ANTSIGNAL */
+	if (local->hw.flags & IEEE80211_HW_SIGNAL_DB) {
+		*pos = status->signal;
+		rthdr->it_present |=
+			cpu_to_le32(1 << IEEE80211_RADIOTAP_DB_ANTSIGNAL);
+		pos++;
+	}
+
+	/* IEEE80211_RADIOTAP_DB_ANTNOISE is not used */
+
+	/* IEEE80211_RADIOTAP_RX_FLAGS */
+	/* ensure 2 byte alignment for the 2 byte field as required */
+	if ((pos - (unsigned char *)rthdr) & 1)
+		pos++;
+	/* FIXME: when radiotap gets a 'bad PLCP' flag use it here */
+	if (status->flag & (RX_FLAG_FAILED_FCS_CRC | RX_FLAG_FAILED_PLCP_CRC))
+		*(__le16 *)pos |= cpu_to_le16(IEEE80211_RADIOTAP_F_RX_BADFCS);
+	pos += 2;
+}
+
 /*
  * This function copies a received frame to all monitor interfaces and
  * returns a cleaned-up SKB that no longer includes the FCS nor the
@@ -89,17 +214,6 @@ ieee80211_rx_monitor(struct ieee80211_local *local, struct sk_buff *origskb,
 {
 	struct ieee80211_sub_if_data *sdata;
 	int needed_headroom = 0;
-	struct ieee80211_radiotap_header *rthdr;
-	__le64 *rttsft = NULL;
-	struct ieee80211_rtap_fixed_data {
-		u8 flags;
-		u8 rate;
-		__le16 chan_freq;
-		__le16 chan_flags;
-		u8 antsignal;
-		u8 padding_for_rxflags;
-		__le16 rx_flags;
-	} __attribute__ ((packed)) *rtfixed;
 	struct sk_buff *skb, *skb2;
 	struct net_device *prev_dev = NULL;
 	int present_fcs_len = 0;
@@ -116,8 +230,8 @@ ieee80211_rx_monitor(struct ieee80211_local *local, struct sk_buff *origskb,
 	if (status->flag & RX_FLAG_RADIOTAP)
 		rtap_len = ieee80211_get_radiotap_len(origskb->data);
 	else
-		/* room for radiotap header, always present fields and TSFT */
-		needed_headroom = sizeof(*rthdr) + sizeof(*rtfixed) + 8;
+		/* 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;
@@ -163,55 +277,9 @@ ieee80211_rx_monitor(struct ieee80211_local *local, struct sk_buff *origskb,
 	}
 
 	/* if necessary, prepend radiotap information */
-	if (!(status->flag & RX_FLAG_RADIOTAP)) {
-		rtfixed = (void *) skb_push(skb, sizeof(*rtfixed));
-		rtap_len = sizeof(*rthdr) + sizeof(*rtfixed);
-		if (status->flag & RX_FLAG_TSFT) {
-			rttsft = (void *) skb_push(skb, sizeof(*rttsft));
-			rtap_len += 8;
-		}
-		rthdr = (void *) skb_push(skb, sizeof(*rthdr));
-		memset(rthdr, 0, sizeof(*rthdr));
-		memset(rtfixed, 0, sizeof(*rtfixed));
-		rthdr->it_present =
-			cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
-				    (1 << IEEE80211_RADIOTAP_RATE) |
-				    (1 << IEEE80211_RADIOTAP_CHANNEL) |
-				    (1 << IEEE80211_RADIOTAP_DB_ANTSIGNAL) |
-				    (1 << IEEE80211_RADIOTAP_RX_FLAGS));
-		rtfixed->flags = 0;
-		if (local->hw.flags & IEEE80211_HW_RX_INCLUDES_FCS)
-			rtfixed->flags |= IEEE80211_RADIOTAP_F_FCS;
-
-		if (rttsft) {
-			*rttsft = cpu_to_le64(status->mactime);
-			rthdr->it_present |=
-				cpu_to_le32(1 << IEEE80211_RADIOTAP_TSFT);
-		}
-
-		/* FIXME: when radiotap gets a 'bad PLCP' flag use it here */
-		rtfixed->rx_flags = 0;
-		if (status->flag &
-		    (RX_FLAG_FAILED_FCS_CRC | RX_FLAG_FAILED_PLCP_CRC))
-			rtfixed->rx_flags |=
-				cpu_to_le16(IEEE80211_RADIOTAP_F_RX_BADFCS);
-
-		rtfixed->rate = rate->bitrate / 5;
-
-		rtfixed->chan_freq = cpu_to_le16(status->freq);
-
-		if (status->band == IEEE80211_BAND_5GHZ)
-			rtfixed->chan_flags =
-				cpu_to_le16(IEEE80211_CHAN_OFDM |
-					    IEEE80211_CHAN_5GHZ);
-		else
-			rtfixed->chan_flags =
-				cpu_to_le16(IEEE80211_CHAN_DYN |
-					    IEEE80211_CHAN_2GHZ);
-
-		rtfixed->antsignal = status->ssi;
-		rthdr->it_len = cpu_to_le16(rtap_len);
-	}
+	if (!(status->flag & RX_FLAG_RADIOTAP))
+		ieee80211_add_rx_radiotap_header(local, skb, status, rate,
+						 needed_headroom);
 
 	skb_reset_mac_header(skb);
 	skb->ip_summed = CHECKSUM_UNNECESSARY;
@@ -275,11 +343,6 @@ static void ieee80211_parse_qos(struct ieee80211_rx_data *rx)
 		}
 	}
 
-	I802_DEBUG_INC(rx->local->wme_rx_queue[tid]);
-	/* only a debug counter, sta might not be assigned properly yet */
-	if (rx->sta)
-		I802_DEBUG_INC(rx->sta->wme_rx_queue[tid]);
-
 	rx->queue = tid;
 	/* Set skb->priority to 1d tag if highest order bit of TID is not set.
 	 * For now, set skb->priority to 0 for other cases. */
@@ -321,51 +384,9 @@ static void ieee80211_verify_ip_alignment(struct ieee80211_rx_data *rx)
 }
 
 
-static u32 ieee80211_rx_load_stats(struct ieee80211_local *local,
-				   struct sk_buff *skb,
-				   struct ieee80211_rx_status *status,
-				   struct ieee80211_rate *rate)
-{
-	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
-	u32 load = 0, hdrtime;
-
-	/* Estimate total channel use caused by this frame */
-
-	/* 1 bit at 1 Mbit/s takes 1 usec; in channel_use values,
-	 * 1 usec = 1/8 * (1080 / 10) = 13.5 */
-
-	if (status->band == IEEE80211_BAND_5GHZ ||
-	    (status->band == IEEE80211_BAND_5GHZ &&
-	     rate->flags & IEEE80211_RATE_ERP_G))
-		hdrtime = CHAN_UTIL_HDR_SHORT;
-	else
-		hdrtime = CHAN_UTIL_HDR_LONG;
-
-	load = hdrtime;
-	if (!is_multicast_ether_addr(hdr->addr1))
-		load += hdrtime;
-
-	/* TODO: optimise again */
-	load += skb->len * CHAN_UTIL_RATE_LCM / rate->bitrate;
-
-	/* Divide channel_use by 8 to avoid wrapping around the counter */
-	load >>= CHAN_UTIL_SHIFT;
-
-	return load;
-}
-
 /* rx handlers */
 
-static ieee80211_rx_result
-ieee80211_rx_h_if_stats(struct ieee80211_rx_data *rx)
-{
-	if (rx->sta)
-		rx->sta->channel_use_raw += rx->load;
-	rx->sdata->channel_use_raw += rx->load;
-	return RX_CONTINUE;
-}
-
-static ieee80211_rx_result
+static ieee80211_rx_result debug_noinline
 ieee80211_rx_h_passive_scan(struct ieee80211_rx_data *rx)
 {
 	struct ieee80211_local *local = rx->local;
@@ -442,7 +463,7 @@ ieee80211_rx_mesh_check(struct ieee80211_rx_data *rx)
 }
 
 
-static ieee80211_rx_result
+static ieee80211_rx_result debug_noinline
 ieee80211_rx_h_check(struct ieee80211_rx_data *rx)
 {
 	struct ieee80211_hdr *hdr;
@@ -484,7 +505,7 @@ ieee80211_rx_h_check(struct ieee80211_rx_data *rx)
 		      ((rx->fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_CTL &&
 		       (rx->fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_PSPOLL)) &&
 		     rx->sdata->vif.type != IEEE80211_IF_TYPE_IBSS &&
-		     (!rx->sta || !(rx->sta->flags & WLAN_STA_ASSOC)))) {
+		     (!rx->sta || !test_sta_flags(rx->sta, WLAN_STA_ASSOC)))) {
 		if ((!(rx->fc & IEEE80211_FCTL_FROMDS) &&
 		     !(rx->fc & IEEE80211_FCTL_TODS) &&
 		     (rx->fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA)
@@ -501,7 +522,7 @@ ieee80211_rx_h_check(struct ieee80211_rx_data *rx)
 }
 
 
-static ieee80211_rx_result
+static ieee80211_rx_result debug_noinline
 ieee80211_rx_h_decrypt(struct ieee80211_rx_data *rx)
 {
 	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) rx->skb->data;
@@ -592,11 +613,6 @@ ieee80211_rx_h_decrypt(struct ieee80211_rx_data *rx)
 		rx->key->tx_rx_count++;
 		/* TODO: add threshold stuff again */
 	} else {
-#ifdef CONFIG_MAC80211_DEBUG
-		if (net_ratelimit())
-			printk(KERN_DEBUG "%s: RX protected frame,"
-			       " but have no key\n", rx->dev->name);
-#endif /* CONFIG_MAC80211_DEBUG */
 		return RX_DROP_MONITOR;
 	}
 
@@ -635,8 +651,7 @@ static void ap_sta_ps_start(struct net_device *dev, struct sta_info *sta)
 
 	if (sdata->bss)
 		atomic_inc(&sdata->bss->num_sta_ps);
-	sta->flags |= WLAN_STA_PS;
-	sta->flags &= ~WLAN_STA_PSPOLL;
+	set_and_clear_sta_flags(sta, WLAN_STA_PS, WLAN_STA_PSPOLL);
 #ifdef CONFIG_MAC80211_VERBOSE_PS_DEBUG
 	printk(KERN_DEBUG "%s: STA %s aid %d enters power save mode\n",
 	       dev->name, print_mac(mac, sta->addr), sta->aid);
@@ -649,7 +664,7 @@ static int ap_sta_ps_end(struct net_device *dev, struct sta_info *sta)
 	struct sk_buff *skb;
 	int sent = 0;
 	struct ieee80211_sub_if_data *sdata;
-	struct ieee80211_tx_packet_data *pkt_data;
+	struct ieee80211_tx_info *info;
 	DECLARE_MAC_BUF(mac);
 
 	sdata = sta->sdata;
@@ -657,7 +672,7 @@ static int ap_sta_ps_end(struct net_device *dev, struct sta_info *sta)
 	if (sdata->bss)
 		atomic_dec(&sdata->bss->num_sta_ps);
 
-	sta->flags &= ~(WLAN_STA_PS | WLAN_STA_PSPOLL);
+	clear_sta_flags(sta, WLAN_STA_PS | WLAN_STA_PSPOLL);
 
 	if (!skb_queue_empty(&sta->ps_tx_buf))
 		sta_info_clear_tim_bit(sta);
@@ -669,13 +684,13 @@ static int ap_sta_ps_end(struct net_device *dev, struct sta_info *sta)
 
 	/* Send all buffered frames to the station */
 	while ((skb = skb_dequeue(&sta->tx_filtered)) != NULL) {
-		pkt_data = (struct ieee80211_tx_packet_data *) skb->cb;
+		info = IEEE80211_SKB_CB(skb);
 		sent++;
-		pkt_data->flags |= IEEE80211_TXPD_REQUEUE;
+		info->flags |= IEEE80211_TX_CTL_REQUEUE;
 		dev_queue_xmit(skb);
 	}
 	while ((skb = skb_dequeue(&sta->ps_tx_buf)) != NULL) {
-		pkt_data = (struct ieee80211_tx_packet_data *) skb->cb;
+		info = IEEE80211_SKB_CB(skb);
 		local->total_ps_buffered--;
 		sent++;
 #ifdef CONFIG_MAC80211_VERBOSE_PS_DEBUG
@@ -683,14 +698,14 @@ static int ap_sta_ps_end(struct net_device *dev, struct sta_info *sta)
 		       "since STA not sleeping anymore\n", dev->name,
 		       print_mac(mac, sta->addr), sta->aid);
 #endif /* CONFIG_MAC80211_VERBOSE_PS_DEBUG */
-		pkt_data->flags |= IEEE80211_TXPD_REQUEUE;
+		info->flags |= IEEE80211_TX_CTL_REQUEUE;
 		dev_queue_xmit(skb);
 	}
 
 	return sent;
 }
 
-static ieee80211_rx_result
+static ieee80211_rx_result debug_noinline
 ieee80211_rx_h_sta_process(struct ieee80211_rx_data *rx)
 {
 	struct sta_info *sta = rx->sta;
@@ -725,16 +740,17 @@ ieee80211_rx_h_sta_process(struct ieee80211_rx_data *rx)
 
 	sta->rx_fragments++;
 	sta->rx_bytes += rx->skb->len;
-	sta->last_rssi = rx->status->ssi;
 	sta->last_signal = rx->status->signal;
+	sta->last_qual = rx->status->qual;
 	sta->last_noise = rx->status->noise;
 
 	if (!(rx->fc & IEEE80211_FCTL_MOREFRAGS)) {
 		/* Change STA power saving mode only in the end of a frame
 		 * exchange sequence */
-		if ((sta->flags & WLAN_STA_PS) && !(rx->fc & IEEE80211_FCTL_PM))
+		if (test_sta_flags(sta, WLAN_STA_PS) &&
+		    !(rx->fc & IEEE80211_FCTL_PM))
 			rx->sent_ps_buffered += ap_sta_ps_end(dev, sta);
-		else if (!(sta->flags & WLAN_STA_PS) &&
+		else if (!test_sta_flags(sta, WLAN_STA_PS) &&
 			 (rx->fc & IEEE80211_FCTL_PM))
 			ap_sta_ps_start(dev, sta);
 	}
@@ -768,7 +784,7 @@ ieee80211_reassemble_add(struct ieee80211_sub_if_data *sdata,
 		sdata->fragment_next = 0;
 
 	if (!skb_queue_empty(&entry->skb_list)) {
-#ifdef CONFIG_MAC80211_DEBUG
+#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
 		struct ieee80211_hdr *hdr =
 			(struct ieee80211_hdr *) entry->skb_list.next->data;
 		DECLARE_MAC_BUF(mac);
@@ -780,7 +796,7 @@ ieee80211_reassemble_add(struct ieee80211_sub_if_data *sdata,
 		       jiffies - entry->first_frag_time, entry->seq,
 		       entry->last_frag, print_mac(mac, hdr->addr1),
 		       print_mac(mac2, hdr->addr2));
-#endif /* CONFIG_MAC80211_DEBUG */
+#endif
 		__skb_queue_purge(&entry->skb_list);
 	}
 
@@ -837,7 +853,7 @@ ieee80211_reassemble_find(struct ieee80211_sub_if_data *sdata,
 	return NULL;
 }
 
-static ieee80211_rx_result
+static ieee80211_rx_result debug_noinline
 ieee80211_rx_h_defragment(struct ieee80211_rx_data *rx)
 {
 	struct ieee80211_hdr *hdr;
@@ -901,18 +917,8 @@ ieee80211_rx_h_defragment(struct ieee80211_rx_data *rx)
 				break;
 		}
 		rpn = rx->key->u.ccmp.rx_pn[rx->queue];
-		if (memcmp(pn, rpn, CCMP_PN_LEN) != 0) {
-			if (net_ratelimit())
-				printk(KERN_DEBUG "%s: defrag: CCMP PN not "
-				       "sequential A2=%s"
-				       " PN=%02x%02x%02x%02x%02x%02x "
-				       "(expected %02x%02x%02x%02x%02x%02x)\n",
-				       rx->dev->name, print_mac(mac, hdr->addr2),
-				       rpn[0], rpn[1], rpn[2], rpn[3], rpn[4],
-				       rpn[5], pn[0], pn[1], pn[2], pn[3],
-				       pn[4], pn[5]);
+		if (memcmp(pn, rpn, CCMP_PN_LEN))
 			return RX_DROP_UNUSABLE;
-		}
 		memcpy(entry->last_pn, pn, CCMP_PN_LEN);
 	}
 
@@ -953,7 +959,7 @@ ieee80211_rx_h_defragment(struct ieee80211_rx_data *rx)
 	return RX_CONTINUE;
 }
 
-static ieee80211_rx_result
+static ieee80211_rx_result debug_noinline
 ieee80211_rx_h_ps_poll(struct ieee80211_rx_data *rx)
 {
 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(rx->dev);
@@ -988,7 +994,7 @@ ieee80211_rx_h_ps_poll(struct ieee80211_rx_data *rx)
 		 * Tell TX path to send one frame even though the STA may
 		 * still remain is PS mode after this frame exchange.
 		 */
-		rx->sta->flags |= WLAN_STA_PSPOLL;
+		set_sta_flags(rx->sta, WLAN_STA_PSPOLL);
 
 #ifdef CONFIG_MAC80211_VERBOSE_PS_DEBUG
 		printk(KERN_DEBUG "STA %s aid %d: PS Poll (entries after %d)\n",
@@ -1016,7 +1022,7 @@ ieee80211_rx_h_ps_poll(struct ieee80211_rx_data *rx)
 		 *	  have nothing buffered for it?
 		 */
 		printk(KERN_DEBUG "%s: STA %s sent PS Poll even "
-		       "though there is no buffered frames for it\n",
+		       "though there are no buffered frames for it\n",
 		       rx->dev->name, print_mac(mac, rx->sta->addr));
 #endif /* CONFIG_MAC80211_VERBOSE_PS_DEBUG */
 	}
@@ -1028,7 +1034,7 @@ ieee80211_rx_h_ps_poll(struct ieee80211_rx_data *rx)
 	return RX_QUEUED;
 }
 
-static ieee80211_rx_result
+static ieee80211_rx_result debug_noinline
 ieee80211_rx_h_remove_qos_control(struct ieee80211_rx_data *rx)
 {
 	u16 fc = rx->fc;
@@ -1051,14 +1057,9 @@ ieee80211_rx_h_remove_qos_control(struct ieee80211_rx_data *rx)
 static int
 ieee80211_802_1x_port_control(struct ieee80211_rx_data *rx)
 {
-	if (unlikely(!rx->sta || !(rx->sta->flags & WLAN_STA_AUTHORIZED))) {
-#ifdef CONFIG_MAC80211_DEBUG
-		if (net_ratelimit())
-			printk(KERN_DEBUG "%s: dropped frame "
-			       "(unauthorized port)\n", rx->dev->name);
-#endif /* CONFIG_MAC80211_DEBUG */
+	if (unlikely(!rx->sta ||
+	    !test_sta_flags(rx->sta, WLAN_STA_AUTHORIZED)))
 		return -EACCES;
-	}
 
 	return 0;
 }
@@ -1138,16 +1139,8 @@ ieee80211_data_to_8023(struct ieee80211_rx_data *rx)
 		memcpy(src, hdr->addr2, ETH_ALEN);
 
 		if (unlikely(sdata->vif.type != IEEE80211_IF_TYPE_AP &&
-			     sdata->vif.type != IEEE80211_IF_TYPE_VLAN)) {
-			if (net_ratelimit())
-				printk(KERN_DEBUG "%s: dropped ToDS frame "
-				       "(BSSID=%s SA=%s DA=%s)\n",
-				       dev->name,
-				       print_mac(mac, hdr->addr1),
-				       print_mac(mac2, hdr->addr2),
-				       print_mac(mac3, hdr->addr3));
+			     sdata->vif.type != IEEE80211_IF_TYPE_VLAN))
 			return -1;
-		}
 		break;
 	case (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS):
 		/* RA TA DA SA */
@@ -1155,17 +1148,8 @@ ieee80211_data_to_8023(struct ieee80211_rx_data *rx)
 		memcpy(src, hdr->addr4, ETH_ALEN);
 
 		 if (unlikely(sdata->vif.type != IEEE80211_IF_TYPE_WDS &&
-			     sdata->vif.type != IEEE80211_IF_TYPE_MESH_POINT)) {
-			 if (net_ratelimit())
-				 printk(KERN_DEBUG "%s: dropped FromDS&ToDS "
-				       "frame (RA=%s TA=%s DA=%s SA=%s)\n",
-				       rx->dev->name,
-				       print_mac(mac, hdr->addr1),
-				       print_mac(mac2, hdr->addr2),
-				       print_mac(mac3, hdr->addr3),
-				       print_mac(mac4, hdr->addr4));
+			     sdata->vif.type != IEEE80211_IF_TYPE_MESH_POINT))
 			return -1;
-		}
 		break;
 	case IEEE80211_FCTL_FROMDS:
 		/* DA BSSID SA */
@@ -1182,27 +1166,13 @@ ieee80211_data_to_8023(struct ieee80211_rx_data *rx)
 		memcpy(dst, hdr->addr1, ETH_ALEN);
 		memcpy(src, hdr->addr2, ETH_ALEN);
 
-		if (sdata->vif.type != IEEE80211_IF_TYPE_IBSS) {
-			if (net_ratelimit()) {
-				printk(KERN_DEBUG "%s: dropped IBSS frame "
-				       "(DA=%s SA=%s BSSID=%s)\n",
-				       dev->name,
-				       print_mac(mac, hdr->addr1),
-				       print_mac(mac2, hdr->addr2),
-				       print_mac(mac3, hdr->addr3));
-			}
+		if (sdata->vif.type != IEEE80211_IF_TYPE_IBSS)
 			return -1;
-		}
 		break;
 	}
 
-	if (unlikely(skb->len - hdrlen < 8)) {
-		if (net_ratelimit()) {
-			printk(KERN_DEBUG "%s: RX too short data frame "
-			       "payload\n", dev->name);
-		}
+	if (unlikely(skb->len - hdrlen < 8))
 		return -1;
-	}
 
 	payload = skb->data + hdrlen;
 	ethertype = (payload[6] << 8) | payload[7];
@@ -1345,7 +1315,7 @@ ieee80211_deliver_skb(struct ieee80211_rx_data *rx)
 	}
 }
 
-static ieee80211_rx_result
+static ieee80211_rx_result debug_noinline
 ieee80211_rx_h_amsdu(struct ieee80211_rx_data *rx)
 {
 	struct net_device *dev = rx->dev;
@@ -1394,10 +1364,8 @@ ieee80211_rx_h_amsdu(struct ieee80211_rx_data *rx)
 
 		padding = ((4 - subframe_len) & 0x3);
 		/* the last MSDU has no padding */
-		if (subframe_len > remaining) {
-			printk(KERN_DEBUG "%s: wrong buffer size\n", dev->name);
+		if (subframe_len > remaining)
 			return RX_DROP_UNUSABLE;
-		}
 
 		skb_pull(skb, sizeof(struct ethhdr));
 		/* if last subframe reuse skb */
@@ -1418,8 +1386,6 @@ ieee80211_rx_h_amsdu(struct ieee80211_rx_data *rx)
 			eth = (struct ethhdr *) skb_pull(skb, ntohs(len) +
 							padding);
 			if (!eth) {
-				printk(KERN_DEBUG "%s: wrong buffer size\n",
-				       dev->name);
 				dev_kfree_skb(frame);
 				return RX_DROP_UNUSABLE;
 			}
@@ -1462,7 +1428,7 @@ ieee80211_rx_h_amsdu(struct ieee80211_rx_data *rx)
 	return RX_QUEUED;
 }
 
-static ieee80211_rx_result
+static ieee80211_rx_result debug_noinline
 ieee80211_rx_h_data(struct ieee80211_rx_data *rx)
 {
 	struct net_device *dev = rx->dev;
@@ -1493,7 +1459,7 @@ ieee80211_rx_h_data(struct ieee80211_rx_data *rx)
 	return RX_QUEUED;
 }
 
-static ieee80211_rx_result
+static ieee80211_rx_result debug_noinline
 ieee80211_rx_h_ctrl(struct ieee80211_rx_data *rx)
 {
 	struct ieee80211_local *local = rx->local;
@@ -1537,7 +1503,7 @@ ieee80211_rx_h_ctrl(struct ieee80211_rx_data *rx)
 	return RX_CONTINUE;
 }
 
-static ieee80211_rx_result
+static ieee80211_rx_result debug_noinline
 ieee80211_rx_h_mgmt(struct ieee80211_rx_data *rx)
 {
 	struct ieee80211_sub_if_data *sdata;
@@ -1571,31 +1537,16 @@ static void ieee80211_rx_michael_mic_report(struct net_device *dev,
 	else
 		keyidx = -1;
 
-	if (net_ratelimit())
-		printk(KERN_DEBUG "%s: TKIP hwaccel reported Michael MIC "
-		       "failure from %s to %s keyidx=%d\n",
-		       dev->name, print_mac(mac, hdr->addr2),
-		       print_mac(mac2, hdr->addr1), keyidx);
-
 	if (!rx->sta) {
 		/*
 		 * Some hardware seem to generate incorrect Michael MIC
 		 * reports; ignore them to avoid triggering countermeasures.
 		 */
-		if (net_ratelimit())
-			printk(KERN_DEBUG "%s: ignored spurious Michael MIC "
-			       "error for unknown address %s\n",
-			       dev->name, print_mac(mac, hdr->addr2));
 		goto ignore;
 	}
 
-	if (!(rx->fc & IEEE80211_FCTL_PROTECTED)) {
-		if (net_ratelimit())
-			printk(KERN_DEBUG "%s: ignored spurious Michael MIC "
-			       "error for a frame with no PROTECTED flag (src "
-			       "%s)\n", dev->name, print_mac(mac, hdr->addr2));
+	if (!(rx->fc & IEEE80211_FCTL_PROTECTED))
 		goto ignore;
-	}
 
 	if (rx->sdata->vif.type == IEEE80211_IF_TYPE_AP && keyidx) {
 		/*
@@ -1604,24 +1555,13 @@ static void ieee80211_rx_michael_mic_report(struct net_device *dev,
 		 * group keys and only the AP is sending real multicast
 		 * frames in the BSS.
 		 */
-		if (net_ratelimit())
-			printk(KERN_DEBUG "%s: ignored Michael MIC error for "
-			       "a frame with non-zero keyidx (%d)"
-			       " (src %s)\n", dev->name, keyidx,
-			       print_mac(mac, hdr->addr2));
 		goto ignore;
 	}
 
 	if ((rx->fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA &&
 	    ((rx->fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_MGMT ||
-	     (rx->fc & IEEE80211_FCTL_STYPE) != IEEE80211_STYPE_AUTH)) {
-		if (net_ratelimit())
-			printk(KERN_DEBUG "%s: ignored spurious Michael MIC "
-			       "error for a frame that cannot be encrypted "
-			       "(fc=0x%04x) (src %s)\n",
-			       dev->name, rx->fc, print_mac(mac, hdr->addr2));
+	     (rx->fc & IEEE80211_FCTL_STYPE) != IEEE80211_STYPE_AUTH))
 		goto ignore;
-	}
 
 	mac80211_ev_michael_mic_failure(rx->dev, keyidx, hdr);
  ignore:
@@ -1710,67 +1650,57 @@ static void ieee80211_rx_cooked_monitor(struct ieee80211_rx_data *rx)
 	dev_kfree_skb(skb);
 }
 
-typedef ieee80211_rx_result (*ieee80211_rx_handler)(struct ieee80211_rx_data *);
-static ieee80211_rx_handler ieee80211_rx_handlers[] =
-{
-	ieee80211_rx_h_if_stats,
-	ieee80211_rx_h_passive_scan,
-	ieee80211_rx_h_check,
-	ieee80211_rx_h_decrypt,
-	ieee80211_rx_h_sta_process,
-	ieee80211_rx_h_defragment,
-	ieee80211_rx_h_ps_poll,
-	ieee80211_rx_h_michael_mic_verify,
-	/* this must be after decryption - so header is counted in MPDU mic
-	 * must be before pae and data, so QOS_DATA format frames
-	 * are not passed to user space by these functions
-	 */
-	ieee80211_rx_h_remove_qos_control,
-	ieee80211_rx_h_amsdu,
-	ieee80211_rx_h_data,
-	ieee80211_rx_h_ctrl,
-	ieee80211_rx_h_mgmt,
-	NULL
-};
 
 static void ieee80211_invoke_rx_handlers(struct ieee80211_sub_if_data *sdata,
 					 struct ieee80211_rx_data *rx,
 					 struct sk_buff *skb)
 {
-	ieee80211_rx_handler *handler;
 	ieee80211_rx_result res = RX_DROP_MONITOR;
 
 	rx->skb = skb;
 	rx->sdata = sdata;
 	rx->dev = sdata->dev;
 
-	for (handler = ieee80211_rx_handlers; *handler != NULL; handler++) {
-		res = (*handler)(rx);
-
-		switch (res) {
-		case RX_CONTINUE:
-			continue;
-		case RX_DROP_UNUSABLE:
-		case RX_DROP_MONITOR:
-			I802_DEBUG_INC(sdata->local->rx_handlers_drop);
-			if (rx->sta)
-				rx->sta->rx_dropped++;
-			break;
-		case RX_QUEUED:
-			I802_DEBUG_INC(sdata->local->rx_handlers_queued);
-			break;
-		}
-		break;
-	}
-
+#define CALL_RXH(rxh)		\
+	res = rxh(rx);		\
+	if (res != RX_CONTINUE)	\
+		goto rxh_done;
+
+	CALL_RXH(ieee80211_rx_h_passive_scan)
+	CALL_RXH(ieee80211_rx_h_check)
+	CALL_RXH(ieee80211_rx_h_decrypt)
+	CALL_RXH(ieee80211_rx_h_sta_process)
+	CALL_RXH(ieee80211_rx_h_defragment)
+	CALL_RXH(ieee80211_rx_h_ps_poll)
+	CALL_RXH(ieee80211_rx_h_michael_mic_verify)
+	/* must be after MMIC verify so header is counted in MPDU mic */
+	CALL_RXH(ieee80211_rx_h_remove_qos_control)
+	CALL_RXH(ieee80211_rx_h_amsdu)
+	CALL_RXH(ieee80211_rx_h_data)
+	CALL_RXH(ieee80211_rx_h_ctrl)
+	CALL_RXH(ieee80211_rx_h_mgmt)
+
+#undef CALL_RXH
+
+ rxh_done:
 	switch (res) {
-	case RX_CONTINUE:
 	case RX_DROP_MONITOR:
+		I802_DEBUG_INC(sdata->local->rx_handlers_drop);
+		if (rx->sta)
+			rx->sta->rx_dropped++;
+		/* fall through */
+	case RX_CONTINUE:
 		ieee80211_rx_cooked_monitor(rx);
 		break;
 	case RX_DROP_UNUSABLE:
+		I802_DEBUG_INC(sdata->local->rx_handlers_drop);
+		if (rx->sta)
+			rx->sta->rx_dropped++;
 		dev_kfree_skb(rx->skb);
 		break;
+	case RX_QUEUED:
+		I802_DEBUG_INC(sdata->local->rx_handlers_queued);
+		break;
 	}
 }
 
@@ -1802,8 +1732,13 @@ static int prepare_for_handlers(struct ieee80211_sub_if_data *sdata,
 		if (!bssid)
 			return 0;
 		if ((rx->fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT &&
-		    (rx->fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_BEACON)
+		    (rx->fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_BEACON) {
+			if (!rx->sta)
+				rx->sta = ieee80211_ibss_add_sta(sdata->dev,
+						rx->skb, bssid, hdr->addr2,
+						BIT(rx->status->rate_idx));
 			return 1;
+		}
 		else if (!ieee80211_bssid_match(bssid, sdata->u.sta.bssid)) {
 			if (!(rx->flags & IEEE80211_RX_IN_SCAN))
 				return 0;
@@ -1816,7 +1751,8 @@ static int prepare_for_handlers(struct ieee80211_sub_if_data *sdata,
 			rx->flags &= ~IEEE80211_RX_RA_MATCH;
 		} else if (!rx->sta)
 			rx->sta = ieee80211_ibss_add_sta(sdata->dev, rx->skb,
-							 bssid, hdr->addr2);
+						bssid, hdr->addr2,
+						BIT(rx->status->rate_idx));
 		break;
 	case IEEE80211_IF_TYPE_MESH_POINT:
 		if (!multicast &&
@@ -1872,7 +1808,6 @@ static int prepare_for_handlers(struct ieee80211_sub_if_data *sdata,
 static void __ieee80211_rx_handle_packet(struct ieee80211_hw *hw,
 					 struct sk_buff *skb,
 					 struct ieee80211_rx_status *status,
-					 u32 load,
 					 struct ieee80211_rate *rate)
 {
 	struct ieee80211_local *local = hw_to_local(hw);
@@ -1891,7 +1826,6 @@ static void __ieee80211_rx_handle_packet(struct ieee80211_hw *hw,
 	rx.local = local;
 
 	rx.status = status;
-	rx.load = load;
 	rx.rate = rate;
 	rx.fc = le16_to_cpu(hdr->frame_control);
 	type = rx.fc & IEEE80211_FCTL_FTYPE;
@@ -2000,7 +1934,6 @@ u8 ieee80211_sta_manage_reorder_buf(struct ieee80211_hw *hw,
 	struct ieee80211_rx_status status;
 	u16 head_seq_num, buf_size;
 	int index;
-	u32 pkt_load;
 	struct ieee80211_supported_band *sband;
 	struct ieee80211_rate *rate;
 
@@ -2035,12 +1968,9 @@ u8 ieee80211_sta_manage_reorder_buf(struct ieee80211_hw *hw,
 					sizeof(status));
 				sband = local->hw.wiphy->bands[status.band];
 				rate = &sband->bitrates[status.rate_idx];
-				pkt_load = ieee80211_rx_load_stats(local,
-						tid_agg_rx->reorder_buf[index],
-						&status, rate);
 				__ieee80211_rx_handle_packet(hw,
 					tid_agg_rx->reorder_buf[index],
-					&status, pkt_load, rate);
+					&status, rate);
 				tid_agg_rx->stored_mpdu_num--;
 				tid_agg_rx->reorder_buf[index] = NULL;
 			}
@@ -2082,11 +2012,8 @@ u8 ieee80211_sta_manage_reorder_buf(struct ieee80211_hw *hw,
 			sizeof(status));
 		sband = local->hw.wiphy->bands[status.band];
 		rate = &sband->bitrates[status.rate_idx];
-		pkt_load = ieee80211_rx_load_stats(local,
-					tid_agg_rx->reorder_buf[index],
-					&status, rate);
 		__ieee80211_rx_handle_packet(hw, tid_agg_rx->reorder_buf[index],
-					     &status, pkt_load, rate);
+					     &status, rate);
 		tid_agg_rx->stored_mpdu_num--;
 		tid_agg_rx->reorder_buf[index] = NULL;
 		tid_agg_rx->head_seq_num = seq_inc(tid_agg_rx->head_seq_num);
@@ -2103,24 +2030,21 @@ static u8 ieee80211_rx_reorder_ampdu(struct ieee80211_local *local,
 	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
 	struct sta_info *sta;
 	struct tid_ampdu_rx *tid_agg_rx;
-	u16 fc, sc;
+	u16 sc;
 	u16 mpdu_seq_num;
-	u8 ret = 0, *qc;
+	u8 ret = 0;
 	int tid;
 
 	sta = sta_info_get(local, hdr->addr2);
 	if (!sta)
 		return ret;
 
-	fc = le16_to_cpu(hdr->frame_control);
-
 	/* filter the QoS data rx stream according to
 	 * STA/TID and check if this STA/TID is on aggregation */
-	if (!WLAN_FC_IS_QOS_DATA(fc))
+	if (!ieee80211_is_data_qos(hdr->frame_control))
 		goto end_reorder;
 
-	qc = skb->data + ieee80211_get_hdrlen(fc) - QOS_CONTROL_LEN;
-	tid = qc[0] & QOS_CONTROL_TID_MASK;
+	tid = *ieee80211_get_qos_ctl(hdr) & QOS_CONTROL_TID_MASK;
 
 	if (sta->ampdu_mlme.tid_state_rx[tid] != HT_AGG_STATE_OPERATIONAL)
 		goto end_reorder;
@@ -2128,7 +2052,7 @@ static u8 ieee80211_rx_reorder_ampdu(struct ieee80211_local *local,
 	tid_agg_rx = sta->ampdu_mlme.tid_rx[tid];
 
 	/* null data frames are excluded */
-	if (unlikely(fc & IEEE80211_STYPE_NULLFUNC))
+	if (unlikely(ieee80211_is_nullfunc(hdr->frame_control)))
 		goto end_reorder;
 
 	/* new un-ordered ampdu frame - process it */
@@ -2165,7 +2089,6 @@ void __ieee80211_rx(struct ieee80211_hw *hw, struct sk_buff *skb,
 		    struct ieee80211_rx_status *status)
 {
 	struct ieee80211_local *local = hw_to_local(hw);
-	u32 pkt_load;
 	struct ieee80211_rate *rate = NULL;
 	struct ieee80211_supported_band *sband;
 
@@ -2205,11 +2128,8 @@ void __ieee80211_rx(struct ieee80211_hw *hw, struct sk_buff *skb,
 		return;
 	}
 
-	pkt_load = ieee80211_rx_load_stats(local, skb, status, rate);
-	local->channel_use_raw += pkt_load;
-
 	if (!ieee80211_rx_reorder_ampdu(local, skb))
-		__ieee80211_rx_handle_packet(hw, skb, status, pkt_load, rate);
+		__ieee80211_rx_handle_packet(hw, skb, status, rate);
 
 	rcu_read_unlock();
 }