[PATCH net-next 13/14] net: ethernet: mtk_eth_soc: set PPE flow hash as skb hash if present
From: Ilya Lipnitskiy <hidden>
Date: 2021-04-22 04:11:04
Also in:
linux-arm-kernel, linux-mediatek, lkml
Subsystem:
mediatek ethernet driver, networking drivers, the rest · Maintainers:
Felix Fietkau, Lorenzo Bianconi, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
From: Felix Fietkau <nbd@nbd.name> This improves GRO performance Signed-off-by: Felix Fietkau <nbd@nbd.name> [Ilya: Use MTK_RXD4_FOE_ENTRY instead of GENMASK(13, 0)] Signed-off-by: Ilya Lipnitskiy <redacted> --- drivers/net/ethernet/mediatek/mtk_eth_soc.c | 8 ++++++++ 1 file changed, 8 insertions(+)
diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
index 88a437f478fd..8c863322587e 100644
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c@@ -19,6 +19,7 @@ #include <linux/interrupt.h> #include <linux/pinctrl/devinfo.h> #include <linux/phylink.h> +#include <linux/jhash.h> #include <net/dsa.h> #include "mtk_eth_soc.h"
@@ -1248,6 +1249,7 @@ static int mtk_poll_rx(struct napi_struct *napi, int budget, struct net_device *netdev; unsigned int pktlen; dma_addr_t dma_addr; + u32 hash; int mac; ring = mtk_get_rx_ring(eth);
@@ -1317,6 +1319,12 @@ static int mtk_poll_rx(struct napi_struct *napi, int budget, skb->protocol = eth_type_trans(skb, netdev); bytes += pktlen; + hash = trxd.rxd4 & MTK_RXD4_FOE_ENTRY; + if (hash != MTK_RXD4_FOE_ENTRY) { + hash = jhash_1word(hash, 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),
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2.31.1