From: Felix Fietkau <nbd@openwrt.org>
Date: Sun, 15 Mar 2015 20:32:09 +0000 (+0000)
Subject: kernel: skip GRO for packets bridged to other hosts
X-Git-Tag: reboot~3938
X-Git-Url: http://git.openwrt.org/?a=commitdiff_plain;h=270bc6427b89c996ec7eb657dc66f20e4a3b297b;p=openwrt%2Fopenwrt.git

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
---

diff --git 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
new file mode 100644
index 0000000000..3adc4e37bb
--- /dev/null
+++ 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;
+ 
diff --git 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
new file mode 100644
index 0000000000..e3fa9172e2
--- /dev/null
+++ 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;
+ 
diff --git 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
new file mode 100644
index 0000000000..fc3625848b
--- /dev/null
+++ 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;
+