From: Felix Fietkau Date: Wed, 26 Aug 2020 16:59:41 +0200 Subject: [PATCH] net: ethernet: mtk_eth_soc: increase DMA ring sizes 256 descriptors is not enough for multi-gigabit traffic under load on MT7622. Bump it to 512 to improve performance Signed-off-by: Felix Fietkau --- --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.h +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.h @@ -19,7 +19,7 @@ #define MTK_QDMA_PAGE_SIZE 2048 #define MTK_MAX_RX_LENGTH 1536 #define MTK_TX_DMA_BUF_LEN 0x3fff -#define MTK_DMA_SIZE 256 +#define MTK_DMA_SIZE 512 #define MTK_NAPI_WEIGHT 64 #define MTK_MAC_COUNT 2 #define MTK_RX_ETH_HLEN (VLAN_ETH_HLEN + VLAN_HLEN + ETH_FCS_LEN)