2021-04-24 00:19:22 +00:00
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From fa817272c37ef78e25dc14e4760ac78a7043a18a Mon Sep 17 00:00:00 2001
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2020-10-24 19:14:16 +00:00
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From: Felix Fietkau <nbd@nbd.name>
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2021-04-24 00:19:22 +00:00
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Date: Thu, 22 Apr 2021 22:21:07 -0700
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Subject: [PATCH] net: ethernet: mtk_eth_soc: set PPE flow hash as skb hash if
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present
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2020-10-24 19:14:16 +00:00
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This improves GRO performance
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Signed-off-by: Felix Fietkau <nbd@nbd.name>
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2021-04-24 00:19:22 +00:00
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[Ilya: Use MTK_RXD4_FOE_ENTRY instead of GENMASK(13, 0)]
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Signed-off-by: Ilya Lipnitskiy <ilya.lipnitskiy@gmail.com>
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Signed-off-by: David S. Miller <davem@davemloft.net>
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2020-10-24 19:14:16 +00:00
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---
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2021-04-24 00:19:22 +00:00
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drivers/net/ethernet/mediatek/mtk_eth_soc.c | 8 ++++++++
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1 file changed, 8 insertions(+)
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2020-10-24 19:14:16 +00:00
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--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
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+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
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@@ -19,6 +19,7 @@
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#include <linux/interrupt.h>
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#include <linux/pinctrl/devinfo.h>
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#include <linux/phylink.h>
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+#include <linux/jhash.h>
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#include <net/dsa.h>
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#include "mtk_eth_soc.h"
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2023-03-18 19:05:11 +00:00
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@@ -1283,6 +1284,7 @@ static int mtk_poll_rx(struct napi_struc
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2020-10-24 19:14:16 +00:00
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struct net_device *netdev;
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unsigned int pktlen;
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dma_addr_t dma_addr;
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+ u32 hash;
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int mac;
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ring = mtk_get_rx_ring(eth);
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2023-03-18 19:05:11 +00:00
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@@ -1355,6 +1357,12 @@ static int mtk_poll_rx(struct napi_struc
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2020-10-24 19:14:16 +00:00
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skb->protocol = eth_type_trans(skb, netdev);
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bytes += pktlen;
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2021-04-24 00:19:22 +00:00
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+ hash = trxd.rxd4 & MTK_RXD4_FOE_ENTRY;
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+ if (hash != MTK_RXD4_FOE_ENTRY) {
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2020-10-24 19:14:16 +00:00
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+ hash = jhash_1word(hash, 0);
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+ skb_set_hash(skb, hash, PKT_HASH_TYPE_L4);
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+ }
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+
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if (netdev->features & NETIF_F_HW_VLAN_CTAG_RX &&
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(trxd.rxd2 & RX_DMA_VTAG))
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__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q),
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