MTK_GDMA_FWD_CFG
val = mtk_r32(eth, MTK_GDMA_FWD_CFG(id));
mtk_w32(eth, val, MTK_GDMA_FWD_CFG(id));
mtk_m32(eth, MTK_GDMA_STRP_CRC, 0, MTK_GDMA_FWD_CFG(0));