1 From: Felix Fietkau <nbd@nbd.name>
2 Date: Wed, 26 Aug 2020 16:59:41 +0200
3 Subject: [PATCH] net: ethernet: mtk_eth_soc: increase DMA ring sizes
5 256 descriptors is not enough for multi-gigabit traffic under load on MT7622.
6 Bump it to 512 to improve performance
8 Signed-off-by: Felix Fietkau <nbd@nbd.name>
11 --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.h
12 +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.h
14 #define MTK_QDMA_PAGE_SIZE 2048
15 #define MTK_MAX_RX_LENGTH 1536
16 #define MTK_TX_DMA_BUF_LEN 0x3fff
17 -#define MTK_DMA_SIZE 256
18 +#define MTK_DMA_SIZE 512
19 #define MTK_NAPI_WEIGHT 64
20 #define MTK_MAC_COUNT 2
21 #define MTK_RX_ETH_HLEN (VLAN_ETH_HLEN + VLAN_HLEN + ETH_FCS_LEN)