fedora core 6 1.2949 + vserver 2.2.0

[linux-2.6.git] / net / llc / llc_input.c

diff --git a/net/llc/llc_input.c b/net/llc/llc_input.c
index 8f3addf..db82aff 100644 (file)
--- a/net/llc/llc_input.c
+++ b/net/llc/llc_input.c
@@ -115,10 +115,11 @@ static inline int llc_fixup_skb(struct sk_buff *skb)
        skb->h.raw += llc_len;
        skb_pull(skb, llc_len);
        if (skb->protocol == htons(ETH_P_802_2)) {
-               u16 pdulen = eth_hdr(skb)->h_proto,
-                   data_size = ntohs(pdulen) - llc_len;
+               __be16 pdulen = eth_hdr(skb)->h_proto;
+               u16 data_size = ntohs(pdulen) - llc_len;
 
-               skb_trim(skb, data_size);
+               if (unlikely(pskb_trim_rcsum(skb, data_size)))
+                       return 0;
        }
        return 1;
 }
@@ -141,6 +142,8 @@ int llc_rcv(struct sk_buff *skb, struct net_device *dev,
        struct llc_sap *sap;
        struct llc_pdu_sn *pdu;
        int dest;
+       int (*rcv)(struct sk_buff *, struct net_device *,
+                  struct packet_type *, struct net_device *);
 
        /*
         * When the interface is in promisc. mode, drop all the crap that it
@@ -168,9 +171,11 @@ int llc_rcv(struct sk_buff *skb, struct net_device *dev,
         * First the upper layer protocols that don't need the full
         * LLC functionality
         */
-       if (sap->rcv_func) {
-               sap->rcv_func(skb, dev, pt, orig_dev);
-               goto out_put;
+       rcv = rcu_dereference(sap->rcv_func);
+       if (rcv) {
+               struct sk_buff *cskb = skb_clone(skb, GFP_ATOMIC);
+               if (cskb)
+                       rcv(cskb, dev, pt, orig_dev);
        }
        dest = llc_pdu_type(skb);
        if (unlikely(!dest || !llc_type_handlers[dest - 1]))