kernel: skip GRO for packets bridged to other hosts

Eliminates excessive skb copying when bridging from LAN to WLAN on ramips. Signed-off-by: Felix Fietkau <nbd@openwrt.org> SVN-Revision: 44797
9 years ago · 270bc6427b
parent 6c434d5f06
commit 270bc6427b
3 changed files with 36 additions and 0 deletions
--- a/target/linux/generic/patches-3.18/680-net-skip-gro-for-otherhost-packets.patch
+++ b/target/linux/generic/patches-3.18/680-net-skip-gro-for-otherhost-packets.patch
@ -0,0 +1,12 @@
+--- a/net/core/dev.c
+++ b/net/core/dev.c
+@@ -4003,6 +4003,9 @@ static enum gro_result dev_gro_receive(s
+ 	enum gro_result ret;
+ 	int grow;
+ 
+	if (skb->pkt_type == PACKET_OTHERHOST)
+		goto normal;
+
+ 	if (!(skb->dev->features & NETIF_F_GRO))
+ 		goto normal;
+ 
--- a/target/linux/generic/patches-3.19/680-net-skip-gro-for-otherhost-packets.patch
+++ b/target/linux/generic/patches-3.19/680-net-skip-gro-for-otherhost-packets.patch
@ -0,0 +1,12 @@
+--- a/net/core/dev.c
+++ b/net/core/dev.c
+@@ -3967,6 +3967,9 @@ static enum gro_result dev_gro_receive(s
+ 	enum gro_result ret;
+ 	int grow;
+ 
+	if (skb->pkt_type == PACKET_OTHERHOST)
+		goto normal;
+
+ 	if (!(skb->dev->features & NETIF_F_GRO))
+ 		goto normal;
+ 
--- a/target/linux/generic/patches-4.0/680-net-skip-gro-for-otherhost-packets.patch
+++ b/target/linux/generic/patches-4.0/680-net-skip-gro-for-otherhost-packets.patch
@ -0,0 +1,12 @@
+--- a/net/core/dev.c
+++ b/net/core/dev.c
+@@ -4005,6 +4005,9 @@ static enum gro_result dev_gro_receive(s
+ 	enum gro_result ret;
+ 	int grow;
+ 
+	if (skb->pkt_type == PACKET_OTHERHOST)
+		goto normal;
+
+ 	if (!(skb->dev->features & NETIF_F_GRO))
+ 		goto normal;
+