kernel: copy kernel 4.19 code to 5.4

[openwrt/openwrt.git] / target / linux / generic / pending-5.4 / 655-increase_skb_pad.patch

diff --git a/target/linux/generic/pending-5.4/655-increase_skb_pad.patch b/target/linux/generic/pending-5.4/655-increase_skb_pad.patch
new file mode 100644 (file)
index 0000000..94e325b
--- /dev/null
+++ b/target/linux/generic/pending-5.4/655-increase_skb_pad.patch
@@ -0,0 +1,20 @@
+From: Felix Fietkau <nbd@nbd.name>
+Subject: kernel: add a few patches for avoiding unnecessary skb reallocations - significantly improves ethernet<->wireless performance
+
+lede-commit: 6f89cffc9add6939d44a6b54cf9a5e77849aa7fd
+Signed-off-by: Felix Fietkau <nbd@nbd.name>
+---
+ include/linux/skbuff.h | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/include/linux/skbuff.h
++++ b/include/linux/skbuff.h
+@@ -2511,7 +2511,7 @@ 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(64, L1_CACHE_BYTES)
+ #endif
+ 
+ int ___pskb_trim(struct sk_buff *skb, unsigned int len);