ieee80211 subsystem:

* Use GFP mask on TX skb allocation.
* Use the tx_headroom and reserve requested space.

Signed-off-by: Michael Buesch <mbuesch@freenet.de>
Signed-off-by: James Ketrenos <jketreno@linux.intel.com>

diff --git a/net/ieee80211/ieee80211_tx.c b/net/ieee80211/ieee80211_tx.c
index f4f2a33..fb45090 100644 (file)
--- a/net/ieee80211/ieee80211_tx.c
+++ b/net/ieee80211/ieee80211_tx.c
@@ -190,7 +190,7 @@ void ieee80211_txb_free(struct ieee80211_txb *txb)
 }
 
 static struct ieee80211_txb *ieee80211_alloc_txb(int nr_frags, int txb_size,
-                                                gfp_t gfp_mask)
+                                                int headroom, gfp_t gfp_mask)
 {
        struct ieee80211_txb *txb;
        int i;
@@ -204,11 +204,13 @@ static struct ieee80211_txb *ieee80211_alloc_txb(int nr_frags, int txb_size,
        txb->frag_size = txb_size;
 
        for (i = 0; i < nr_frags; i++) {
-               txb->fragments[i] = dev_alloc_skb(txb_size);
+               txb->fragments[i] = __dev_alloc_skb(txb_size + headroom,
+                                                   gfp_mask);
                if (unlikely(!txb->fragments[i])) {
                        i--;
                        break;
                }
+               skb_reserve(txb->fragments[i], headroom);
        }
        if (unlikely(i != nr_frags)) {
                while (i >= 0)
@@ -384,7 +386,8 @@ int ieee80211_xmit(struct sk_buff *skb, struct net_device *dev)
        /* When we allocate the TXB we allocate enough space for the reserve
         * and full fragment bytes (bytes_per_frag doesn't include prefix,
         * postfix, header, FCS, etc.) */
-       txb = ieee80211_alloc_txb(nr_frags, frag_size, GFP_ATOMIC);
+       txb = ieee80211_alloc_txb(nr_frags, frag_size,
+                                 ieee->tx_headroom, GFP_ATOMIC);
        if (unlikely(!txb)) {
                printk(KERN_WARNING "%s: Could not allocate TXB\n",
                       ieee->dev->name);