gro: fix different skb headrooms

[net-next-2.6.git] / net / core / skbuff.c

diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index 3a2513f0d0c3036bf6c3f688f7e94b3e1d8f197c..26396ff67cf9b2f374e2e593128e88a861934a3e 100644 (file)
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -2573,6 +2573,10 @@ struct sk_buff *skb_segment(struct sk_buff *skb, int features)
                __copy_skb_header(nskb, skb);
                nskb->mac_len = skb->mac_len;
 
+               /* nskb and skb might have different headroom */
+               if (nskb->ip_summed == CHECKSUM_PARTIAL)
+                       nskb->csum_start += skb_headroom(nskb) - headroom;
+
                skb_reset_mac_header(nskb);
                skb_set_network_header(nskb, skb->mac_len);
                nskb->transport_header = (nskb->network_header +
@@ -2702,8 +2706,8 @@ int skb_gro_receive(struct sk_buff **head, struct sk_buff *skb)
        } else if (skb_gro_len(p) != pinfo->gso_size)
                return -E2BIG;
 
-       headroom = skb_headroom(p);
-       nskb = netdev_alloc_skb(p->dev, headroom + skb_gro_offset(p));
+       headroom = NET_SKB_PAD + NET_IP_ALIGN;
+       nskb = alloc_skb(headroom + skb_gro_offset(p), GFP_ATOMIC);
        if (unlikely(!nskb))
                return -ENOMEM;