[PATCH net RFC] net: ethernet: mtk_eth_soc: ppe: add source port comparison
From: Elad Yifee <hidden>
Date: 2024-05-11 12:44:16
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
Resolve packet loss issue on the following conditions: - utilizing multiple GMACs - device has more than 4GB DRAM - using PPE Signed-off-by: Elad Yifee <redacted> --- drivers/net/ethernet/mediatek/mtk_ppe.c | 4 ++++ drivers/net/ethernet/mediatek/mtk_ppe_regs.h | 1 + 2 files changed, 5 insertions(+)
diff --git a/drivers/net/ethernet/mediatek/mtk_ppe.c b/drivers/net/ethernet/mediatek/mtk_ppe.c
index 6ce0db3a1a92..6415ba618ebf 100644
--- a/drivers/net/ethernet/mediatek/mtk_ppe.c
+++ b/drivers/net/ethernet/mediatek/mtk_ppe.c@@ -1053,6 +1053,10 @@ void mtk_ppe_start(struct mtk_ppe *ppe) MTK_PPE_GLO_CFG_IP4_L4_CS_DROP | MTK_PPE_GLO_CFG_IP4_CS_DROP | MTK_PPE_GLO_CFG_FLOW_DROP_UPDATE; + + if (mtk_is_netsys_v2_or_greater(ppe->eth)) + val |= MTK_PPE_GLO_CFG_SP_CMP_EN; + ppe_w32(ppe, MTK_PPE_GLO_CFG, val); ppe_w32(ppe, MTK_PPE_DEFAULT_CPU_PORT, 0);
diff --git a/drivers/net/ethernet/mediatek/mtk_ppe_regs.h b/drivers/net/ethernet/mediatek/mtk_ppe_regs.h
index 3ce088eef0ef..61fea4b4b65b 100644
--- a/drivers/net/ethernet/mediatek/mtk_ppe_regs.h
+++ b/drivers/net/ethernet/mediatek/mtk_ppe_regs.h@@ -18,6 +18,7 @@ #define MTK_PPE_GLO_CFG_UDP_LITE_EN BIT(10) #define MTK_PPE_GLO_CFG_UDP_LEN_DROP BIT(11) #define MTK_PPE_GLO_CFG_MCAST_ENTRIES GNEMASK(13, 12) +#define MTK_PPE_GLO_CFG_SP_CMP_EN BIT(25) #define MTK_PPE_GLO_CFG_BUSY BIT(31) #define MTK_PPE_FLOW_CFG 0x204
--
2.44.0