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kernel: add a few patches for avoiding unnecessary skb reallocations - significantly improves ethernet<->wireless performance with mac80211 based drivers

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git-svn-id: svn://svn.openwrt.org/openwrt/trunk@31886 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
nbd
2012-05-27 14:43:58 +00:00
parent 878544bb07
commit 4cf70ab2e1
3 changed files with 59 additions and 0 deletions
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11
target/linux/generic/patches-3.3/655-increase_skb_pad.patch Normal file
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@@ -0,0 +1,11 @@
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -1558,7 +1558,7 @@ static inline int pskb_network_may_pull(
* NET_IP_ALIGN(2) + ethernet_header(14) + IP_header(20/40) + ports(8)
*/
#ifndef NET_SKB_PAD
-#define NET_SKB_PAD max(32, L1_CACHE_BYTES)
+#define NET_SKB_PAD max(48, L1_CACHE_BYTES)
#endif
extern int ___pskb_trim(struct sk_buff *skb, unsigned int len);