1 files changed, 42 insertions, 38 deletions

diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index 37e9891605b..904aaea081c 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -477,7 +477,7 @@ ieee80211_rx_mesh_check(struct ieee80211_rx_data *rx)
 {
 	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)rx->skb->data;
 	unsigned int hdrlen = ieee80211_hdrlen(hdr->frame_control);
-	char *dev_addr = rx->dev->dev_addr;
+	char *dev_addr = rx->sdata->dev->dev_addr;
 
 	if (ieee80211_is_data(hdr->frame_control)) {
 		if (is_multicast_ether_addr(hdr->addr1)) {
@@ -591,7 +591,9 @@ ieee80211_rx_h_check(struct ieee80211_rx_data *rx)
 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;
+	struct sk_buff *skb = rx->skb;
+	struct ieee80211_rx_status *status = IEEE80211_SKB_RXCB(skb);
+	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
 	int keyidx;
 	int hdrlen;
 	ieee80211_rx_result result = RX_DROP_UNUSABLE;
@@ -645,8 +647,8 @@ ieee80211_rx_h_decrypt(struct ieee80211_rx_data *rx)
 			return RX_CONTINUE;
 	} else if (mmie_keyidx >= 0) {
 		/* Broadcast/multicast robust management frame / BIP */
-		if ((rx->status->flag & RX_FLAG_DECRYPTED) &&
-		    (rx->status->flag & RX_FLAG_IV_STRIPPED))
+		if ((status->flag & RX_FLAG_DECRYPTED) &&
+		    (status->flag & RX_FLAG_IV_STRIPPED))
 			return RX_CONTINUE;
 
 		if (mmie_keyidx < NUM_DEFAULT_KEYS ||
@@ -678,8 +680,8 @@ ieee80211_rx_h_decrypt(struct ieee80211_rx_data *rx)
 		 * we somehow allow the driver to tell us which key
 		 * the hardware used if this flag is set?
 		 */
-		if ((rx->status->flag & RX_FLAG_DECRYPTED) &&
-		    (rx->status->flag & RX_FLAG_IV_STRIPPED))
+		if ((status->flag & RX_FLAG_DECRYPTED) &&
+		    (status->flag & RX_FLAG_IV_STRIPPED))
 			return RX_CONTINUE;
 
 		hdrlen = ieee80211_hdrlen(hdr->frame_control);
@@ -715,8 +717,8 @@ ieee80211_rx_h_decrypt(struct ieee80211_rx_data *rx)
 	/* Check for weak IVs if possible */
 	if (rx->sta && rx->key->conf.alg == ALG_WEP &&
 	    ieee80211_is_data(hdr->frame_control) &&
-	    (!(rx->status->flag & RX_FLAG_IV_STRIPPED) ||
-	     !(rx->status->flag & RX_FLAG_DECRYPTED)) &&
+	    (!(status->flag & RX_FLAG_IV_STRIPPED) ||
+	     !(status->flag & RX_FLAG_DECRYPTED)) &&
 	    ieee80211_wep_is_weak_iv(rx->skb, rx->key))
 		rx->sta->wep_weak_iv_count++;
 
@@ -736,7 +738,7 @@ ieee80211_rx_h_decrypt(struct ieee80211_rx_data *rx)
 	}
 
 	/* either the frame has been decrypted or will be dropped */
-	rx->status->flag |= RX_FLAG_DECRYPTED;
+	status->flag |= RX_FLAG_DECRYPTED;
 
 	return result;
 }
@@ -816,7 +818,9 @@ static ieee80211_rx_result debug_noinline
 ieee80211_rx_h_sta_process(struct ieee80211_rx_data *rx)
 {
 	struct sta_info *sta = rx->sta;
-	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)rx->skb->data;
+	struct sk_buff *skb = rx->skb;
+	struct ieee80211_rx_status *status = IEEE80211_SKB_RXCB(skb);
+	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
 
 	if (!sta)
 		return RX_CONTINUE;
@@ -847,8 +851,8 @@ ieee80211_rx_h_sta_process(struct ieee80211_rx_data *rx)
 
 	sta->rx_fragments++;
 	sta->rx_bytes += rx->skb->len;
-	sta->last_signal = rx->status->signal;
-	sta->last_noise = rx->status->noise;
+	sta->last_signal = status->signal;
+	sta->last_noise = status->noise;
 
 	/*
 	 * Change STA power saving mode only at the end of a frame
@@ -1140,11 +1144,14 @@ ieee80211_802_1x_port_control(struct ieee80211_rx_data *rx)
 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);
+
 	/*
 	 * Pass through unencrypted frames if the hardware has
 	 * decrypted them already.
 	 */
-	if (rx->status->flag & RX_FLAG_DECRYPTED)
+	if (status->flag & RX_FLAG_DECRYPTED)
 		return 0;
 
 	/* Drop unencrypted frames if key is set. */
@@ -1178,8 +1185,8 @@ ieee80211_drop_unencrypted(struct ieee80211_rx_data *rx, __le16 fc)
 static int
 __ieee80211_data_to_8023(struct ieee80211_rx_data *rx)
 {
-	struct net_device *dev = rx->dev;
-	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+	struct ieee80211_sub_if_data *sdata = rx->sdata;
+	struct net_device *dev = sdata->dev;
 	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)rx->skb->data;
 
 	if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN && !sdata->use_4addr &&
@@ -1205,7 +1212,7 @@ static bool ieee80211_frame_allowed(struct ieee80211_rx_data *rx, __le16 fc)
 	 * of whether the frame was encrypted or not.
 	 */
 	if (ehdr->h_proto == htons(ETH_P_PAE) &&
-	    (compare_ether_addr(ehdr->h_dest, rx->dev->dev_addr) == 0 ||
+	    (compare_ether_addr(ehdr->h_dest, rx->sdata->dev->dev_addr) == 0 ||
 	     compare_ether_addr(ehdr->h_dest, pae_group_addr) == 0))
 		return true;
 
@@ -1222,10 +1229,10 @@ static bool ieee80211_frame_allowed(struct ieee80211_rx_data *rx, __le16 fc)
 static void
 ieee80211_deliver_skb(struct ieee80211_rx_data *rx)
 {
-	struct net_device *dev = rx->dev;
+	struct ieee80211_sub_if_data *sdata = rx->sdata;
+	struct net_device *dev = sdata->dev;
 	struct ieee80211_local *local = rx->local;
 	struct sk_buff *skb, *xmit_skb;
-	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 	struct ethhdr *ehdr = (struct ethhdr *) rx->skb->data;
 	struct sta_info *dsta;
 
@@ -1306,7 +1313,7 @@ ieee80211_deliver_skb(struct ieee80211_rx_data *rx)
 static ieee80211_rx_result debug_noinline
 ieee80211_rx_h_amsdu(struct ieee80211_rx_data *rx)
 {
-	struct net_device *dev = rx->dev;
+	struct net_device *dev = rx->sdata->dev;
 	struct ieee80211_local *local = rx->local;
 	u16 ethertype;
 	u8 *payload;
@@ -1431,12 +1438,11 @@ ieee80211_rx_h_mesh_fwding(struct ieee80211_rx_data *rx)
 	unsigned int hdrlen;
 	struct sk_buff *skb = rx->skb, *fwd_skb;
 	struct ieee80211_local *local = rx->local;
-	struct ieee80211_sub_if_data *sdata;
+	struct ieee80211_sub_if_data *sdata = rx->sdata;
 
 	hdr = (struct ieee80211_hdr *) skb->data;
 	hdrlen = ieee80211_hdrlen(hdr->frame_control);
 	mesh_hdr = (struct ieee80211s_hdr *) (skb->data + hdrlen);
-	sdata = IEEE80211_DEV_TO_SUB_IF(rx->dev);
 
 	if (!ieee80211_is_data(hdr->frame_control))
 		return RX_CONTINUE;
@@ -1474,7 +1480,7 @@ ieee80211_rx_h_mesh_fwding(struct ieee80211_rx_data *rx)
 
 	/* Frame has reached destination.  Don't forward */
 	if (!is_multicast_ether_addr(hdr->addr1) &&
-			compare_ether_addr(rx->dev->dev_addr, hdr->addr3) == 0)
+	    compare_ether_addr(sdata->dev->dev_addr, hdr->addr3) == 0)
 		return RX_CONTINUE;
 
 	mesh_hdr->ttl--;
@@ -1491,10 +1497,10 @@ ieee80211_rx_h_mesh_fwding(struct ieee80211_rx_data *rx)
 
 			if (!fwd_skb && net_ratelimit())
 				printk(KERN_DEBUG "%s: failed to clone mesh frame\n",
-						   rx->dev->name);
+						   sdata->dev->name);
 
 			fwd_hdr =  (struct ieee80211_hdr *) fwd_skb->data;
-			memcpy(fwd_hdr->addr2, rx->dev->dev_addr, ETH_ALEN);
+			memcpy(fwd_hdr->addr2, sdata->dev->dev_addr, ETH_ALEN);
 			info = IEEE80211_SKB_CB(fwd_skb);
 			memset(info, 0, sizeof(*info));
 			info->flags |= IEEE80211_TX_INTFL_NEED_TXPROCESSING;
@@ -1528,7 +1534,7 @@ ieee80211_rx_h_mesh_fwding(struct ieee80211_rx_data *rx)
 	}
 
 	if (is_multicast_ether_addr(hdr->addr1) ||
-	    rx->dev->flags & IFF_PROMISC)
+	    sdata->dev->flags & IFF_PROMISC)
 		return RX_CONTINUE;
 	else
 		return RX_DROP_MONITOR;
@@ -1538,9 +1544,9 @@ ieee80211_rx_h_mesh_fwding(struct ieee80211_rx_data *rx)
 static ieee80211_rx_result debug_noinline
 ieee80211_rx_h_data(struct ieee80211_rx_data *rx)
 {
-	struct net_device *dev = rx->dev;
+	struct ieee80211_sub_if_data *sdata = rx->sdata;
+	struct net_device *dev = sdata->dev;
 	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)rx->skb->data;
-	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 	__le16 fc = hdr->frame_control;
 	int err;
 
@@ -1664,7 +1670,7 @@ static ieee80211_rx_result debug_noinline
 ieee80211_rx_h_action(struct ieee80211_rx_data *rx)
 {
 	struct ieee80211_local *local = rx->local;
-	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(rx->dev);
+	struct ieee80211_sub_if_data *sdata = rx->sdata;
 	struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *) rx->skb->data;
 	int len = rx->skb->len;
 
@@ -1776,7 +1782,7 @@ ieee80211_rx_h_action(struct ieee80211_rx_data *rx)
 static ieee80211_rx_result debug_noinline
 ieee80211_rx_h_mgmt(struct ieee80211_rx_data *rx)
 {
-	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(rx->dev);
+	struct ieee80211_sub_if_data *sdata = rx->sdata;
 	struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *) rx->skb->data;
 
 	if (!(rx->flags & IEEE80211_RX_RA_MATCH))
@@ -1852,7 +1858,7 @@ static void ieee80211_rx_cooked_monitor(struct ieee80211_rx_data *rx)
 	} __attribute__ ((packed)) *rthdr;
 	struct sk_buff *skb = rx->skb, *skb2;
 	struct net_device *prev_dev = NULL;
-	struct ieee80211_rx_status *status = rx->status;
+	struct ieee80211_rx_status *status = IEEE80211_SKB_RXCB(skb);
 
 	if (rx->flags & IEEE80211_RX_CMNTR_REPORTED)
 		goto out_free_skb;
@@ -1928,7 +1934,6 @@ static void ieee80211_invoke_rx_handlers(struct ieee80211_sub_if_data *sdata,
 
 	rx->skb = skb;
 	rx->sdata = sdata;
-	rx->dev = sdata->dev;
 
 #define CALL_RXH(rxh)			\
 	do {				\
@@ -1987,7 +1992,9 @@ static int prepare_for_handlers(struct ieee80211_sub_if_data *sdata,
 				struct ieee80211_rx_data *rx,
 				struct ieee80211_hdr *hdr)
 {
-	u8 *bssid = ieee80211_get_bssid(hdr, rx->skb->len, sdata->vif.type);
+	struct sk_buff *skb = rx->skb;
+	struct ieee80211_rx_status *status = IEEE80211_SKB_RXCB(skb);
+	u8 *bssid = ieee80211_get_bssid(hdr, skb->len, sdata->vif.type);
 	int multicast = is_multicast_ether_addr(hdr->addr1);
 
 	switch (sdata->vif.type) {
@@ -2019,10 +2026,10 @@ static int prepare_for_handlers(struct ieee80211_sub_if_data *sdata,
 			rx->flags &= ~IEEE80211_RX_RA_MATCH;
 		} else if (!rx->sta) {
 			int rate_idx;
-			if (rx->status->flag & RX_FLAG_HT)
+			if (status->flag & RX_FLAG_HT)
 				rate_idx = 0; /* TODO: HT rates */
 			else
-				rate_idx = rx->status->rate_idx;
+				rate_idx = status->rate_idx;
 			rx->sta = ieee80211_ibss_add_sta(sdata, bssid, hdr->addr2,
 				BIT(rate_idx));
 		}
@@ -2088,7 +2095,6 @@ static void __ieee80211_rx_handle_packet(struct ieee80211_hw *hw,
 	memset(&rx, 0, sizeof(rx));
 	rx.skb = skb;
 	rx.local = local;
-	rx.status = status;
 	rx.rate = rate;
 
 	if (ieee80211_is_data(hdr->frame_control) || ieee80211_is_mgmt(hdr->frame_control))
@@ -2102,10 +2108,8 @@ static void __ieee80211_rx_handle_packet(struct ieee80211_hw *hw,
 	ieee80211_verify_alignment(&rx);
 
 	rx.sta = sta_info_get(local, hdr->addr2);
-	if (rx.sta) {
+	if (rx.sta)
 		rx.sdata = rx.sta->sdata;
-		rx.dev = rx.sta->sdata->dev;
-	}
 
 	if (rx.sdata && ieee80211_is_data(hdr->frame_control)) {
 		rx.flags |= IEEE80211_RX_RA_MATCH;