| b.liu | e958203 | 2025-04-17 19:18:16 +0800 | [diff] [blame] | 1 | From: Felix Fietkau <nbd@nbd.name> |
| 2 | Date: Sun, 13 Sep 2020 08:27:24 +0200 |
| 3 | Subject: [PATCH] net: ethernet: mtk_eth_soc: set PPE flow hash as skb hash |
| 4 | if present |
| 5 | |
| 6 | This improves GRO performance |
| 7 | |
| 8 | Signed-off-by: Felix Fietkau <nbd@nbd.name> |
| 9 | --- |
| 10 | |
| 11 | --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c |
| 12 | +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c |
| 13 | @@ -19,6 +19,7 @@ |
| 14 | #include <linux/interrupt.h> |
| 15 | #include <linux/pinctrl/devinfo.h> |
| 16 | #include <linux/phylink.h> |
| 17 | +#include <linux/jhash.h> |
| 18 | #include <net/dsa.h> |
| 19 | |
| 20 | #include "mtk_eth_soc.h" |
| 21 | @@ -1278,6 +1279,7 @@ static int mtk_poll_rx(struct napi_struc |
| 22 | struct net_device *netdev; |
| 23 | unsigned int pktlen; |
| 24 | dma_addr_t dma_addr; |
| 25 | + u32 hash; |
| 26 | int mac; |
| 27 | |
| 28 | ring = mtk_get_rx_ring(eth); |
| 29 | @@ -1350,6 +1352,12 @@ static int mtk_poll_rx(struct napi_struc |
| 30 | skb->protocol = eth_type_trans(skb, netdev); |
| 31 | bytes += pktlen; |
| 32 | |
| 33 | + hash = trxd.rxd4 & GENMASK(13, 0); |
| 34 | + if (hash != GENMASK(13, 0)) { |
| 35 | + hash = jhash_1word(hash, 0); |
| 36 | + skb_set_hash(skb, hash, PKT_HASH_TYPE_L4); |
| 37 | + } |
| 38 | + |
| 39 | if (netdev->features & NETIF_F_HW_VLAN_CTAG_RX && |
| 40 | (trxd.rxd2 & RX_DMA_VTAG)) |
| 41 | __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), |