diff options
Diffstat (limited to 'target/linux/generic-2.6/patches-2.6.31/205-skb_padding.patch')
| -rw-r--r-- | target/linux/generic-2.6/patches-2.6.31/205-skb_padding.patch | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/target/linux/generic-2.6/patches-2.6.31/205-skb_padding.patch b/target/linux/generic-2.6/patches-2.6.31/205-skb_padding.patch new file mode 100644 index 0000000000..80c7e704e8 --- /dev/null +++ b/target/linux/generic-2.6/patches-2.6.31/205-skb_padding.patch @@ -0,0 +1,56 @@ +--- a/include/linux/skbuff.h ++++ b/include/linux/skbuff.h +@@ -1387,11 +1387,18 @@ static inline int skb_network_offset(con + * + * Various parts of the networking layer expect at least 32 bytes of + * headroom, you should not reduce this. ++ * ++ * This has been changed to 64 to acommodate for routing between ethernet ++ * and wireless, but only for new allocations + */ + #ifndef NET_SKB_PAD + #define NET_SKB_PAD 32 + #endif + ++#ifndef NET_SKB_PAD_ALLOC ++#define NET_SKB_PAD_ALLOC 64 ++#endif ++ + extern int ___pskb_trim(struct sk_buff *skb, unsigned int len); + + static inline void __skb_trim(struct sk_buff *skb, unsigned int len) +@@ -1481,9 +1488,9 @@ static inline void __skb_queue_purge(str + static inline struct sk_buff *__dev_alloc_skb(unsigned int length, + gfp_t gfp_mask) + { +- struct sk_buff *skb = alloc_skb(length + NET_SKB_PAD, gfp_mask); ++ struct sk_buff *skb = alloc_skb(length + NET_SKB_PAD_ALLOC, gfp_mask); + if (likely(skb)) +- skb_reserve(skb, NET_SKB_PAD); ++ skb_reserve(skb, NET_SKB_PAD_ALLOC); + return skb; + } + +@@ -1556,7 +1563,7 @@ static inline int __skb_cow(struct sk_bu + delta = headroom - skb_headroom(skb); + + if (delta || cloned) +- return pskb_expand_head(skb, ALIGN(delta, NET_SKB_PAD), 0, ++ return pskb_expand_head(skb, ALIGN(delta, NET_SKB_PAD_ALLOC), 0, + GFP_ATOMIC); + return 0; + } +--- a/net/core/skbuff.c ++++ b/net/core/skbuff.c +@@ -336,9 +336,9 @@ struct sk_buff *__netdev_alloc_skb(struc + int node = dev->dev.parent ? dev_to_node(dev->dev.parent) : -1; + struct sk_buff *skb; + +- skb = __alloc_skb(length + NET_SKB_PAD, gfp_mask, 0, node); ++ skb = __alloc_skb(length + NET_SKB_PAD_ALLOC, gfp_mask, 0, node); + if (likely(skb)) { +- skb_reserve(skb, NET_SKB_PAD); ++ skb_reserve(skb, NET_SKB_PAD_ALLOC); + skb->dev = dev; + } + return skb; |