target/linux/generic/pending-4.9/655-increase_skb_pad.patch

   1 From: Felix Fietkau <nbd@nbd.name>
   2 Subject: kernel: add a few patches for avoiding unnecessary skb reallocations - significantly improves ethernet<->wireless performance
   3
   4 lede-commit: 6f89cffc9add6939d44a6b54cf9a5e77849aa7fd
   5 Signed-off-by: Felix Fietkau <nbd@nbd.name>
   6 ---
   7  include/linux/skbuff.h | 2 +-
   8  1 file changed, 1 insertion(+), 1 deletion(-)
   9
  10 diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
  11 index 32810f279f8e..5f3343ae25ef 100644
  12 --- a/include/linux/skbuff.h
  13 +++ b/include/linux/skbuff.h
  14 @@ -2298,7 +2298,7 @@ static inline int pskb_network_may_pull(struct sk_buff *skb, unsigned int len)
  15   * NET_IP_ALIGN(2) + ethernet_header(14) + IP_header(20/40) + ports(8)
  16   */
  17  #ifndef NET_SKB_PAD
  18 -#define NET_SKB_PAD    max(32, L1_CACHE_BYTES)
  19 +#define NET_SKB_PAD    max(64, L1_CACHE_BYTES)
  20  #endif
  21
  22  int ___pskb_trim(struct sk_buff *skb, unsigned int len);
  23 --
  24 2.11.0
  25