ramips/mediatek: improve GRO performance, fix PPE packet parsing

[openwrt/openwrt.git] / target / linux / generic / pending-5.4 / 770-14-net-ethernet-mtk_eth_soc-set-PPE-flow-hash-as-skb-ha.patch

diff --git a/target/linux/generic/pending-5.4/770-14-net-ethernet-mtk_eth_soc-set-PPE-flow-hash-as-skb-ha.patch b/target/linux/generic/pending-5.4/770-14-net-ethernet-mtk_eth_soc-set-PPE-flow-hash-as-skb-ha.patch
new file mode 100644 (file)
index 0000000..384af9d
--- /dev/null
+++ b/target/linux/generic/pending-5.4/770-14-net-ethernet-mtk_eth_soc-set-PPE-flow-hash-as-skb-ha.patch
@@ -0,0 +1,23 @@
+From: Felix Fietkau <nbd@nbd.name>
+Date: Sun, 13 Sep 2020 08:27:24 +0200
+Subject: [PATCH] net: ethernet: mtk_eth_soc: set PPE flow hash as skb hash
+ if present
+
+This improves GRO performance
+
+Signed-off-by: Felix Fietkau <nbd@nbd.name>
+---
+
+--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
++++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+@@ -1318,6 +1318,10 @@ static int mtk_poll_rx(struct napi_struc
+               skb->protocol = eth_type_trans(skb, netdev);
+               bytes += pktlen;
+ 
++              hash = trxd.rxd4 & GENMASK(13, 0);
++              if (hash != GENMASK(13, 0))
++                      skb_set_hash(skb, hash, PKT_HASH_TYPE_L4);
++
+               if (netdev->features & NETIF_F_HW_VLAN_CTAG_RX &&
+                   (trxd.rxd2 & RX_DMA_VTAG))
+                       __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q),