Merge branch 'master'

[linux-2.6-omap-h63xx.git] / net / ieee80211 / ieee80211_tx.c

diff --git a/net/ieee80211/ieee80211_tx.c b/net/ieee80211/ieee80211_tx.c
index 2955b7aa5a38cc5fb3386e95ef0b5c9d201b2201..95ccbadbf55b49cd2809ccd6b4d11ed510c7f8e9 100644 (file)
--- a/net/ieee80211/ieee80211_tx.c
+++ b/net/ieee80211/ieee80211_tx.c
@@ -157,11 +157,14 @@ static inline int ieee80211_encrypt_fragment(struct ieee80211_device *ieee,
        struct ieee80211_crypt_data *crypt = ieee->crypt[ieee->tx_keyidx];
        int res;
 
+       if (crypt == NULL)
+               return -1;
+
        /* To encrypt, frame format is:
         * IV (4 bytes), clear payload (including SNAP), ICV (4 bytes) */
        atomic_inc(&crypt->refcnt);
        res = 0;
-       if (crypt->ops->encrypt_mpdu)
+       if (crypt->ops && crypt->ops->encrypt_mpdu)
                res = crypt->ops->encrypt_mpdu(frag, hdr_len, crypt->priv);
 
        atomic_dec(&crypt->refcnt);
@@ -187,7 +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;
@@ -201,11 +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)
@@ -264,9 +269,9 @@ int ieee80211_xmit(struct sk_buff *skb, struct net_device *dev)
        encrypt = !(ether_type == ETH_P_PAE && ieee->ieee802_1x) &&
            ieee->sec.encrypt;
 
-       host_encrypt = ieee->host_encrypt && encrypt;
-       host_encrypt_msdu = ieee->host_encrypt_msdu && encrypt;
-       host_build_iv = ieee->host_build_iv && encrypt;
+       host_encrypt = ieee->host_encrypt && encrypt && crypt;
+       host_encrypt_msdu = ieee->host_encrypt_msdu && encrypt && crypt;
+       host_build_iv = ieee->host_build_iv && encrypt && crypt;
 
        if (!encrypt && ieee->ieee802_1x &&
            ieee->drop_unencrypted && ether_type != ETH_P_PAE) {
@@ -381,7 +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);
@@ -535,7 +541,7 @@ int ieee80211_tx_frame(struct ieee80211_device *ieee,
        /* 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(1, len, GFP_ATOMIC);
+       txb = ieee80211_alloc_txb(1, len, ieee->tx_headroom, GFP_ATOMIC);
        if (unlikely(!txb)) {
                printk(KERN_WARNING "%s: Could not allocate TXB\n",
                       ieee->dev->name);