kernel: properly pad the allocated headroom in skb_cow to NET_SKB_PAD

SVN-Revision: 31906
12 years ago · 51bc47ce7c
parent 0b8c1c8dfb
commit 51bc47ce7c
1 changed files with 2 additions and 1 deletions
--- a/target/linux/generic/patches-3.3/654-avoid_skb_cow_realloc.patch
+++ b/target/linux/generic/patches-3.3/654-avoid_skb_cow_realloc.patch
@ -10,10 +10,11 @@
 	if (headroom < NET_SKB_PAD)
 -		headroom = NET_SKB_PAD;
 -	if (headroom > skb_headroom(skb))
+-		delta = headroom - skb_headroom(skb);
 +		alloc_headroom = NET_SKB_PAD;
 +	if (headroom > skb_headroom(skb) ||
 +	    (cloned && alloc_headroom > skb_headroom(skb))) {
- 		delta = headroom - skb_headroom(skb);
+		delta = alloc_headroom - skb_headroom(skb);
 +	}
 
 	if (delta || cloned)