1 files changed, 42 insertions, 38 deletions

diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index 37e9891605b4..904aaea081c8 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;