1 files changed, 708 insertions, 107 deletions

diff --git a/drivers/net/ethernet/mediatek/mtk_ppe.c b/drivers/net/ethernet/mediatek/mtk_ppe.c
index 3ad10c793308..ada852adc5f7 100644
--- a/drivers/net/ethernet/mediatek/mtk_ppe.c
+++ b/drivers/net/ethernet/mediatek/mtk_ppe.c
@@ -6,9 +6,26 @@
 #include <linux/iopoll.h>
 #include <linux/etherdevice.h>
 #include <linux/platform_device.h>
+#include <linux/if_ether.h>
+#include <linux/if_vlan.h>
+
+#include <net/dst_metadata.h>
+#include <net/dsa.h>
+#include <net/ipv6.h>
+
+#include "mtk_eth_soc.h"
 #include "mtk_ppe.h"
 #include "mtk_ppe_regs.h"
 
+static DEFINE_SPINLOCK(ppe_lock);
+
+static const struct rhashtable_params mtk_flow_l2_ht_params = {
+	.head_offset = offsetof(struct mtk_flow_entry, l2_node),
+	.key_offset = offsetof(struct mtk_flow_entry, data.bridge),
+	.key_len = offsetof(struct mtk_foe_bridge, key_end),
+	.automatic_shrinking = true,
+};
+
 static void ppe_w32(struct mtk_ppe *ppe, u32 reg, u32 val)
 {
 	writel(val, ppe->base + reg);
@@ -41,6 +58,11 @@ static u32 ppe_clear(struct mtk_ppe *ppe, u32 reg, u32 val)
 	return ppe_m32(ppe, reg, val, 0);
 }
 
+static u32 mtk_eth_timestamp(struct mtk_eth *eth)
+{
+	return mtk_r32(eth, 0x0010) & mtk_get_ib1_ts_mask(eth);
+}
+
 static int mtk_ppe_wait_busy(struct mtk_ppe *ppe)
 {
 	int ret;
@@ -56,6 +78,55 @@ static int mtk_ppe_wait_busy(struct mtk_ppe *ppe)
 	return ret;
 }
 
+static int mtk_ppe_mib_wait_busy(struct mtk_ppe *ppe)
+{
+	int ret;
+	u32 val;
+
+	ret = readl_poll_timeout(ppe->base + MTK_PPE_MIB_SER_CR, val,
+				 !(val & MTK_PPE_MIB_SER_CR_ST),
+				 20, MTK_PPE_WAIT_TIMEOUT_US);
+
+	if (ret)
+		dev_err(ppe->dev, "MIB table busy");
+
+	return ret;
+}
+
+static int mtk_mib_entry_read(struct mtk_ppe *ppe, u16 index, u64 *bytes, u64 *packets)
+{
+	u32 val, cnt_r0, cnt_r1, cnt_r2;
+	int ret;
+
+	val = FIELD_PREP(MTK_PPE_MIB_SER_CR_ADDR, index) | MTK_PPE_MIB_SER_CR_ST;
+	ppe_w32(ppe, MTK_PPE_MIB_SER_CR, val);
+
+	ret = mtk_ppe_mib_wait_busy(ppe);
+	if (ret)
+		return ret;
+
+	cnt_r0 = readl(ppe->base + MTK_PPE_MIB_SER_R0);
+	cnt_r1 = readl(ppe->base + MTK_PPE_MIB_SER_R1);
+	cnt_r2 = readl(ppe->base + MTK_PPE_MIB_SER_R2);
+
+	if (mtk_is_netsys_v3_or_greater(ppe->eth)) {
+		/* 64 bit for each counter */
+		u32 cnt_r3 = readl(ppe->base + MTK_PPE_MIB_SER_R3);
+		*bytes = ((u64)cnt_r1 << 32) | cnt_r0;
+		*packets = ((u64)cnt_r3 << 32) | cnt_r2;
+	} else {
+		/* 48 bit byte counter, 40 bit packet counter */
+		u32 byte_cnt_low = FIELD_GET(MTK_PPE_MIB_SER_R0_BYTE_CNT_LOW, cnt_r0);
+		u32 byte_cnt_high = FIELD_GET(MTK_PPE_MIB_SER_R1_BYTE_CNT_HIGH, cnt_r1);
+		u32 pkt_cnt_low = FIELD_GET(MTK_PPE_MIB_SER_R1_PKT_CNT_LOW, cnt_r1);
+		u32 pkt_cnt_high = FIELD_GET(MTK_PPE_MIB_SER_R2_PKT_CNT_HIGH, cnt_r2);
+		*bytes = ((u64)byte_cnt_high << 32) | byte_cnt_low;
+		*packets = ((u64)pkt_cnt_high << 16) | pkt_cnt_low;
+	}
+
+	return 0;
+}
+
 static void mtk_ppe_cache_clear(struct mtk_ppe *ppe)
 {
 	ppe_set(ppe, MTK_PPE_CACHE_CTL, MTK_PPE_CACHE_CTL_CLEAR);
@@ -70,19 +141,12 @@ static void mtk_ppe_cache_enable(struct mtk_ppe *ppe, bool enable)
 		enable * MTK_PPE_CACHE_CTL_EN);
 }
 
-static u32 mtk_ppe_hash_entry(struct mtk_foe_entry *e)
+static u32 mtk_ppe_hash_entry(struct mtk_eth *eth, struct mtk_foe_entry *e)
 {
 	u32 hv1, hv2, hv3;
 	u32 hash;
 
-	switch (FIELD_GET(MTK_FOE_IB1_PACKET_TYPE, e->ib1)) {
-		case MTK_PPE_PKT_TYPE_BRIDGE:
-			hv1 = e->bridge.src_mac_lo;
-			hv1 ^= ((e->bridge.src_mac_hi & 0xffff) << 16);
-			hv2 = e->bridge.src_mac_hi >> 16;
-			hv2 ^= e->bridge.dest_mac_lo;
-			hv3 = e->bridge.dest_mac_hi;
-			break;
+	switch (mtk_get_ib1_pkt_type(eth, e->ib1)) {
 		case MTK_PPE_PKT_TYPE_IPV4_ROUTE:
 		case MTK_PPE_PKT_TYPE_IPV4_HNAPT:
 			hv1 = e->ipv4.orig.ports;
@@ -111,16 +175,19 @@ static u32 mtk_ppe_hash_entry(struct mtk_foe_entry *e)
 	hash = (hash >> 24) | ((hash & 0xffffff) << 8);
 	hash ^= hv1 ^ hv2 ^ hv3;
 	hash ^= hash >> 16;
-	hash <<= 1;
+	hash <<= (ffs(eth->soc->hash_offset) - 1);
 	hash &= MTK_PPE_ENTRIES - 1;
 
 	return hash;
 }
 
 static inline struct mtk_foe_mac_info *
-mtk_foe_entry_l2(struct mtk_foe_entry *entry)
+mtk_foe_entry_l2(struct mtk_eth *eth, struct mtk_foe_entry *entry)
 {
-	int type = FIELD_GET(MTK_FOE_IB1_PACKET_TYPE, entry->ib1);
+	int type = mtk_get_ib1_pkt_type(eth, entry->ib1);
+
+	if (type == MTK_PPE_PKT_TYPE_BRIDGE)
+		return &entry->bridge.l2;
 
 	if (type >= MTK_PPE_PKT_TYPE_IPV4_DSLITE)
 		return &entry->ipv6.l2;
@@ -129,9 +196,12 @@ mtk_foe_entry_l2(struct mtk_foe_entry *entry)
 }
 
 static inline u32 *
-mtk_foe_entry_ib2(struct mtk_foe_entry *entry)
+mtk_foe_entry_ib2(struct mtk_eth *eth, struct mtk_foe_entry *entry)
 {
-	int type = FIELD_GET(MTK_FOE_IB1_PACKET_TYPE, entry->ib1);
+	int type = mtk_get_ib1_pkt_type(eth, entry->ib1);
+
+	if (type == MTK_PPE_PKT_TYPE_BRIDGE)
+		return &entry->bridge.ib2;
 
 	if (type >= MTK_PPE_PKT_TYPE_IPV4_DSLITE)
 		return &entry->ipv6.ib2;
@@ -139,27 +209,40 @@ mtk_foe_entry_ib2(struct mtk_foe_entry *entry)
 	return &entry->ipv4.ib2;
 }
 
-int mtk_foe_entry_prepare(struct mtk_foe_entry *entry, int type, int l4proto,
-			  u8 pse_port, u8 *src_mac, u8 *dest_mac)
+int mtk_foe_entry_prepare(struct mtk_eth *eth, struct mtk_foe_entry *entry,
+			  int type, int l4proto, u8 pse_port, u8 *src_mac,
+			  u8 *dest_mac)
 {
 	struct mtk_foe_mac_info *l2;
 	u32 ports_pad, val;
 
 	memset(entry, 0, sizeof(*entry));
 
-	val = FIELD_PREP(MTK_FOE_IB1_STATE, MTK_FOE_STATE_BIND) |
-	      FIELD_PREP(MTK_FOE_IB1_PACKET_TYPE, type) |
-	      FIELD_PREP(MTK_FOE_IB1_UDP, l4proto == IPPROTO_UDP) |
-	      MTK_FOE_IB1_BIND_TTL |
-	      MTK_FOE_IB1_BIND_CACHE;
-	entry->ib1 = val;
+	if (mtk_is_netsys_v2_or_greater(eth)) {
+		val = FIELD_PREP(MTK_FOE_IB1_STATE, MTK_FOE_STATE_BIND) |
+		      FIELD_PREP(MTK_FOE_IB1_PACKET_TYPE_V2, type) |
+		      FIELD_PREP(MTK_FOE_IB1_UDP, l4proto == IPPROTO_UDP) |
+		      MTK_FOE_IB1_BIND_CACHE_V2 | MTK_FOE_IB1_BIND_TTL_V2;
+		entry->ib1 = val;
+
+		val = FIELD_PREP(MTK_FOE_IB2_DEST_PORT_V2, pse_port) |
+		      FIELD_PREP(MTK_FOE_IB2_PORT_AG_V2, 0xf);
+	} else {
+		int port_mg = eth->soc->offload_version > 1 ? 0 : 0x3f;
+
+		val = FIELD_PREP(MTK_FOE_IB1_STATE, MTK_FOE_STATE_BIND) |
+		      FIELD_PREP(MTK_FOE_IB1_PACKET_TYPE, type) |
+		      FIELD_PREP(MTK_FOE_IB1_UDP, l4proto == IPPROTO_UDP) |
+		      MTK_FOE_IB1_BIND_CACHE | MTK_FOE_IB1_BIND_TTL;
+		entry->ib1 = val;
 
-	val = FIELD_PREP(MTK_FOE_IB2_PORT_MG, 0x3f) |
-	      FIELD_PREP(MTK_FOE_IB2_PORT_AG, 0x1f) |
-	      FIELD_PREP(MTK_FOE_IB2_DEST_PORT, pse_port);
+		val = FIELD_PREP(MTK_FOE_IB2_DEST_PORT, pse_port) |
+		      FIELD_PREP(MTK_FOE_IB2_PORT_MG, port_mg) |
+		      FIELD_PREP(MTK_FOE_IB2_PORT_AG, 0x1f);
+	}
 
 	if (is_multicast_ether_addr(dest_mac))
-		val |= MTK_FOE_IB2_MULTICAST;
+		val |= mtk_get_ib2_multicast_mask(eth);
 
 	ports_pad = 0xa5a5a500 | (l4proto & 0xff);
 	if (type == MTK_PPE_PKT_TYPE_IPV4_ROUTE)
@@ -167,7 +250,12 @@ int mtk_foe_entry_prepare(struct mtk_foe_entry *entry, int type, int l4proto,
 	if (type == MTK_PPE_PKT_TYPE_IPV6_ROUTE_3T)
 		entry->ipv6.ports = ports_pad;
 
-	if (type >= MTK_PPE_PKT_TYPE_IPV4_DSLITE) {
+	if (type == MTK_PPE_PKT_TYPE_BRIDGE) {
+		ether_addr_copy(entry->bridge.src_mac, src_mac);
+		ether_addr_copy(entry->bridge.dest_mac, dest_mac);
+		entry->bridge.ib2 = val;
+		l2 = &entry->bridge.l2;
+	} else if (type >= MTK_PPE_PKT_TYPE_IPV4_DSLITE) {
 		entry->ipv6.ib2 = val;
 		l2 = &entry->ipv6.l2;
 	} else {
@@ -188,24 +276,30 @@ int mtk_foe_entry_prepare(struct mtk_foe_entry *entry, int type, int l4proto,
 	return 0;
 }
 
-int mtk_foe_entry_set_pse_port(struct mtk_foe_entry *entry, u8 port)
+int mtk_foe_entry_set_pse_port(struct mtk_eth *eth,
+			       struct mtk_foe_entry *entry, u8 port)
 {
-	u32 *ib2 = mtk_foe_entry_ib2(entry);
-	u32 val;
+	u32 *ib2 = mtk_foe_entry_ib2(eth, entry);
+	u32 val = *ib2;
 
-	val = *ib2;
-	val &= ~MTK_FOE_IB2_DEST_PORT;
-	val |= FIELD_PREP(MTK_FOE_IB2_DEST_PORT, port);
+	if (mtk_is_netsys_v2_or_greater(eth)) {
+		val &= ~MTK_FOE_IB2_DEST_PORT_V2;
+		val |= FIELD_PREP(MTK_FOE_IB2_DEST_PORT_V2, port);
+	} else {
+		val &= ~MTK_FOE_IB2_DEST_PORT;
+		val |= FIELD_PREP(MTK_FOE_IB2_DEST_PORT, port);
+	}
 	*ib2 = val;
 
 	return 0;
 }
 
-int mtk_foe_entry_set_ipv4_tuple(struct mtk_foe_entry *entry, bool egress,
+int mtk_foe_entry_set_ipv4_tuple(struct mtk_eth *eth,
+				 struct mtk_foe_entry *entry, bool egress,
 				 __be32 src_addr, __be16 src_port,
 				 __be32 dest_addr, __be16 dest_port)
 {
-	int type = FIELD_GET(MTK_FOE_IB1_PACKET_TYPE, entry->ib1);
+	int type = mtk_get_ib1_pkt_type(eth, entry->ib1);
 	struct mtk_ipv4_tuple *t;
 
 	switch (type) {
@@ -240,13 +334,13 @@ int mtk_foe_entry_set_ipv4_tuple(struct mtk_foe_entry *entry, bool egress,
 	return 0;
 }
 
-int mtk_foe_entry_set_ipv6_tuple(struct mtk_foe_entry *entry,
+int mtk_foe_entry_set_ipv6_tuple(struct mtk_eth *eth,
+				 struct mtk_foe_entry *entry,
 				 __be32 *src_addr, __be16 src_port,
 				 __be32 *dest_addr, __be16 dest_port)
 {
-	int type = FIELD_GET(MTK_FOE_IB1_PACKET_TYPE, entry->ib1);
+	int type = mtk_get_ib1_pkt_type(eth, entry->ib1);
 	u32 *src, *dest;
-	int i;
 
 	switch (type) {
 	case MTK_PPE_PKT_TYPE_IPV4_DSLITE:
@@ -267,47 +361,47 @@ int mtk_foe_entry_set_ipv6_tuple(struct mtk_foe_entry *entry,
 		return -EINVAL;
 	}
 
-	for (i = 0; i < 4; i++)
-		src[i] = be32_to_cpu(src_addr[i]);
-	for (i = 0; i < 4; i++)
-		dest[i] = be32_to_cpu(dest_addr[i]);
+	ipv6_addr_be32_to_cpu(src, src_addr);
+	ipv6_addr_be32_to_cpu(dest, dest_addr);
 
 	return 0;
 }
 
-int mtk_foe_entry_set_dsa(struct mtk_foe_entry *entry, int port)
+int mtk_foe_entry_set_dsa(struct mtk_eth *eth, struct mtk_foe_entry *entry,
+			  int port)
 {
-	struct mtk_foe_mac_info *l2 = mtk_foe_entry_l2(entry);
+	struct mtk_foe_mac_info *l2 = mtk_foe_entry_l2(eth, entry);
 
 	l2->etype = BIT(port);
 
-	if (!(entry->ib1 & MTK_FOE_IB1_BIND_VLAN_LAYER))
-		entry->ib1 |= FIELD_PREP(MTK_FOE_IB1_BIND_VLAN_LAYER, 1);
+	if (!(entry->ib1 & mtk_get_ib1_vlan_layer_mask(eth)))
+		entry->ib1 |= mtk_prep_ib1_vlan_layer(eth, 1);
 	else
 		l2->etype |= BIT(8);
 
-	entry->ib1 &= ~MTK_FOE_IB1_BIND_VLAN_TAG;
+	entry->ib1 &= ~mtk_get_ib1_vlan_tag_mask(eth);
 
 	return 0;
 }
 
-int mtk_foe_entry_set_vlan(struct mtk_foe_entry *entry, int vid)
+int mtk_foe_entry_set_vlan(struct mtk_eth *eth, struct mtk_foe_entry *entry,
+			   int vid)
 {
-	struct mtk_foe_mac_info *l2 = mtk_foe_entry_l2(entry);
+	struct mtk_foe_mac_info *l2 = mtk_foe_entry_l2(eth, entry);
 
-	switch (FIELD_GET(MTK_FOE_IB1_BIND_VLAN_LAYER, entry->ib1)) {
+	switch (mtk_get_ib1_vlan_layer(eth, entry->ib1)) {
 	case 0:
-		entry->ib1 |= MTK_FOE_IB1_BIND_VLAN_TAG |
-			      FIELD_PREP(MTK_FOE_IB1_BIND_VLAN_LAYER, 1);
+		entry->ib1 |= mtk_get_ib1_vlan_tag_mask(eth) |
+			      mtk_prep_ib1_vlan_layer(eth, 1);
 		l2->vlan1 = vid;
 		return 0;
 	case 1:
-		if (!(entry->ib1 & MTK_FOE_IB1_BIND_VLAN_TAG)) {
+		if (!(entry->ib1 & mtk_get_ib1_vlan_tag_mask(eth))) {
 			l2->vlan1 = vid;
 			l2->etype |= BIT(8);
 		} else {
 			l2->vlan2 = vid;
-			entry->ib1 += FIELD_PREP(MTK_FOE_IB1_BIND_VLAN_LAYER, 1);
+			entry->ib1 += mtk_prep_ib1_vlan_layer(eth, 1);
 		}
 		return 0;
 	default:
@@ -315,79 +409,546 @@ int mtk_foe_entry_set_vlan(struct mtk_foe_entry *entry, int vid)
 	}
 }
 
-int mtk_foe_entry_set_pppoe(struct mtk_foe_entry *entry, int sid)
+int mtk_foe_entry_set_pppoe(struct mtk_eth *eth, struct mtk_foe_entry *entry,
+			    int sid)
 {
-	struct mtk_foe_mac_info *l2 = mtk_foe_entry_l2(entry);
+	struct mtk_foe_mac_info *l2 = mtk_foe_entry_l2(eth, entry);
 
-	if (!(entry->ib1 & MTK_FOE_IB1_BIND_VLAN_LAYER) ||
-	    (entry->ib1 & MTK_FOE_IB1_BIND_VLAN_TAG))
+	if (!(entry->ib1 & mtk_get_ib1_vlan_layer_mask(eth)) ||
+	    (entry->ib1 & mtk_get_ib1_vlan_tag_mask(eth)))
 		l2->etype = ETH_P_PPP_SES;
 
-	entry->ib1 |= MTK_FOE_IB1_BIND_PPPOE;
+	entry->ib1 |= mtk_get_ib1_ppoe_mask(eth);
 	l2->pppoe_id = sid;
 
 	return 0;
 }
 
-static inline bool mtk_foe_entry_usable(struct mtk_foe_entry *entry)
+int mtk_foe_entry_set_wdma(struct mtk_eth *eth, struct mtk_foe_entry *entry,
+			   int wdma_idx, int txq, int bss, int wcid,
+			   bool amsdu_en)
+{
+	struct mtk_foe_mac_info *l2 = mtk_foe_entry_l2(eth, entry);
+	u32 *ib2 = mtk_foe_entry_ib2(eth, entry);
+
+	switch (eth->soc->version) {
+	case 3:
+		*ib2 &= ~MTK_FOE_IB2_PORT_MG_V2;
+		*ib2 |=  FIELD_PREP(MTK_FOE_IB2_RX_IDX, txq) |
+			 MTK_FOE_IB2_WDMA_WINFO_V2;
+		l2->w3info = FIELD_PREP(MTK_FOE_WINFO_WCID_V3, wcid) |
+			     FIELD_PREP(MTK_FOE_WINFO_BSS_V3, bss);
+		l2->amsdu = FIELD_PREP(MTK_FOE_WINFO_AMSDU_EN, amsdu_en);
+		break;
+	case 2:
+		*ib2 &= ~MTK_FOE_IB2_PORT_MG_V2;
+		*ib2 |=  FIELD_PREP(MTK_FOE_IB2_RX_IDX, txq) |
+			 MTK_FOE_IB2_WDMA_WINFO_V2;
+		l2->winfo = FIELD_PREP(MTK_FOE_WINFO_WCID, wcid) |
+			    FIELD_PREP(MTK_FOE_WINFO_BSS, bss);
+		break;
+	default:
+		*ib2 &= ~MTK_FOE_IB2_PORT_MG;
+		*ib2 |= MTK_FOE_IB2_WDMA_WINFO;
+		if (wdma_idx)
+			*ib2 |= MTK_FOE_IB2_WDMA_DEVIDX;
+		l2->vlan2 = FIELD_PREP(MTK_FOE_VLAN2_WINFO_BSS, bss) |
+			    FIELD_PREP(MTK_FOE_VLAN2_WINFO_WCID, wcid) |
+			    FIELD_PREP(MTK_FOE_VLAN2_WINFO_RING, txq);
+		break;
+	}
+
+	return 0;
+}
+
+int mtk_foe_entry_set_queue(struct mtk_eth *eth, struct mtk_foe_entry *entry,
+			    unsigned int queue)
+{
+	u32 *ib2 = mtk_foe_entry_ib2(eth, entry);
+
+	if (mtk_is_netsys_v2_or_greater(eth)) {
+		*ib2 &= ~MTK_FOE_IB2_QID_V2;
+		*ib2 |= FIELD_PREP(MTK_FOE_IB2_QID_V2, queue);
+		*ib2 |= MTK_FOE_IB2_PSE_QOS_V2;
+	} else {
+		*ib2 &= ~MTK_FOE_IB2_QID;
+		*ib2 |= FIELD_PREP(MTK_FOE_IB2_QID, queue);
+		*ib2 |= MTK_FOE_IB2_PSE_QOS;
+	}
+
+	return 0;
+}
+
+static bool
+mtk_flow_entry_match(struct mtk_eth *eth, struct mtk_flow_entry *entry,
+		     struct mtk_foe_entry *data)
 {
-	return !(entry->ib1 & MTK_FOE_IB1_STATIC) &&
-	       FIELD_GET(MTK_FOE_IB1_STATE, entry->ib1) != MTK_FOE_STATE_BIND;
+	int type, len;
+
+	if ((data->ib1 ^ entry->data.ib1) & MTK_FOE_IB1_UDP)
+		return false;
+
+	type = mtk_get_ib1_pkt_type(eth, entry->data.ib1);
+	if (type > MTK_PPE_PKT_TYPE_IPV4_DSLITE)
+		len = offsetof(struct mtk_foe_entry, ipv6._rsv);
+	else
+		len = offsetof(struct mtk_foe_entry, ipv4.ib2);
+
+	return !memcmp(&entry->data.data, &data->data, len - 4);
 }
 
-int mtk_foe_entry_commit(struct mtk_ppe *ppe, struct mtk_foe_entry *entry,
-			 u16 timestamp)
+static void
+__mtk_foe_entry_clear(struct mtk_ppe *ppe, struct mtk_flow_entry *entry)
 {
+	struct hlist_head *head;
+	struct hlist_node *tmp;
+
+	if (entry->type == MTK_FLOW_TYPE_L2) {
+		rhashtable_remove_fast(&ppe->l2_flows, &entry->l2_node,
+				       mtk_flow_l2_ht_params);
+
+		head = &entry->l2_flows;
+		hlist_for_each_entry_safe(entry, tmp, head, l2_data.list)
+			__mtk_foe_entry_clear(ppe, entry);
+		return;
+	}
+
+	hlist_del_init(&entry->list);
+	if (entry->hash != 0xffff) {
+		struct mtk_foe_entry *hwe = mtk_foe_get_entry(ppe, entry->hash);
+
+		hwe->ib1 &= ~MTK_FOE_IB1_STATE;
+		hwe->ib1 |= FIELD_PREP(MTK_FOE_IB1_STATE, MTK_FOE_STATE_INVALID);
+		dma_wmb();
+		mtk_ppe_cache_clear(ppe);
+
+		if (ppe->accounting) {
+			struct mtk_foe_accounting *acct;
+
+			acct = ppe->acct_table + entry->hash * sizeof(*acct);
+			acct->packets = 0;
+			acct->bytes = 0;
+		}
+	}
+	entry->hash = 0xffff;
+
+	if (entry->type != MTK_FLOW_TYPE_L2_SUBFLOW)
+		return;
+
+	hlist_del_init(&entry->l2_data.list);
+	kfree(entry);
+}
+
+static int __mtk_foe_entry_idle_time(struct mtk_ppe *ppe, u32 ib1)
+{
+	u32 ib1_ts_mask = mtk_get_ib1_ts_mask(ppe->eth);
+	u16 now = mtk_eth_timestamp(ppe->eth);
+	u16 timestamp = ib1 & ib1_ts_mask;
+
+	if (timestamp > now)
+		return ib1_ts_mask + 1 - timestamp + now;
+	else
+		return now - timestamp;
+}
+
+static void
+mtk_flow_entry_update_l2(struct mtk_ppe *ppe, struct mtk_flow_entry *entry)
+{
+	u32 ib1_ts_mask = mtk_get_ib1_ts_mask(ppe->eth);
+	struct mtk_flow_entry *cur;
 	struct mtk_foe_entry *hwe;
-	u32 hash;
+	struct hlist_node *tmp;
+	int idle;
 
-	timestamp &= MTK_FOE_IB1_BIND_TIMESTAMP;
-	entry->ib1 &= ~MTK_FOE_IB1_BIND_TIMESTAMP;
-	entry->ib1 |= FIELD_PREP(MTK_FOE_IB1_BIND_TIMESTAMP, timestamp);
+	idle = __mtk_foe_entry_idle_time(ppe, entry->data.ib1);
+	hlist_for_each_entry_safe(cur, tmp, &entry->l2_flows, l2_data.list) {
+		int cur_idle;
+		u32 ib1;
 
-	hash = mtk_ppe_hash_entry(entry);
-	hwe = &ppe->foe_table[hash];
-	if (!mtk_foe_entry_usable(hwe)) {
-		hwe++;
-		hash++;
+		hwe = mtk_foe_get_entry(ppe, cur->hash);
+		ib1 = READ_ONCE(hwe->ib1);
 
-		if (!mtk_foe_entry_usable(hwe))
-			return -ENOSPC;
+		if (FIELD_GET(MTK_FOE_IB1_STATE, ib1) != MTK_FOE_STATE_BIND) {
+			cur->hash = 0xffff;
+			__mtk_foe_entry_clear(ppe, cur);
+			continue;
+		}
+
+		cur_idle = __mtk_foe_entry_idle_time(ppe, ib1);
+		if (cur_idle >= idle)
+			continue;
+
+		idle = cur_idle;
+		entry->data.ib1 &= ~ib1_ts_mask;
+		entry->data.ib1 |= ib1 & ib1_ts_mask;
+	}
+}
+
+static void
+mtk_flow_entry_update(struct mtk_ppe *ppe, struct mtk_flow_entry *entry)
+{
+	struct mtk_foe_entry foe = {};
+	struct mtk_foe_entry *hwe;
+
+	spin_lock_bh(&ppe_lock);
+
+	if (entry->type == MTK_FLOW_TYPE_L2) {
+		mtk_flow_entry_update_l2(ppe, entry);
+		goto out;
+	}
+
+	if (entry->hash == 0xffff)
+		goto out;
+
+	hwe = mtk_foe_get_entry(ppe, entry->hash);
+	memcpy(&foe, hwe, ppe->eth->soc->foe_entry_size);
+	if (!mtk_flow_entry_match(ppe->eth, entry, &foe)) {
+		entry->hash = 0xffff;
+		goto out;
+	}
+
+	entry->data.ib1 = foe.ib1;
+
+out:
+	spin_unlock_bh(&ppe_lock);
+}
+
+static void
+__mtk_foe_entry_commit(struct mtk_ppe *ppe, struct mtk_foe_entry *entry,
+		       u16 hash)
+{
+	struct mtk_eth *eth = ppe->eth;
+	u16 timestamp = mtk_eth_timestamp(eth);
+	struct mtk_foe_entry *hwe;
+	u32 val;
+
+	if (mtk_is_netsys_v2_or_greater(eth)) {
+		entry->ib1 &= ~MTK_FOE_IB1_BIND_TIMESTAMP_V2;
+		entry->ib1 |= FIELD_PREP(MTK_FOE_IB1_BIND_TIMESTAMP_V2,
+					 timestamp);
+	} else {
+		entry->ib1 &= ~MTK_FOE_IB1_BIND_TIMESTAMP;
+		entry->ib1 |= FIELD_PREP(MTK_FOE_IB1_BIND_TIMESTAMP,
+					 timestamp);
 	}
 
-	memcpy(&hwe->data, &entry->data, sizeof(hwe->data));
+	hwe = mtk_foe_get_entry(ppe, hash);
+	memcpy(&hwe->data, &entry->data, eth->soc->foe_entry_size - sizeof(hwe->ib1));
 	wmb();
 	hwe->ib1 = entry->ib1;
 
+	if (ppe->accounting) {
+		if (mtk_is_netsys_v2_or_greater(eth))
+			val = MTK_FOE_IB2_MIB_CNT_V2;
+		else
+			val = MTK_FOE_IB2_MIB_CNT;
+		*mtk_foe_entry_ib2(eth, hwe) |= val;
+	}
+
 	dma_wmb();
 
 	mtk_ppe_cache_clear(ppe);
+}
 
-	return hash;
+void mtk_foe_entry_clear(struct mtk_ppe *ppe, struct mtk_flow_entry *entry)
+{
+	spin_lock_bh(&ppe_lock);
+	__mtk_foe_entry_clear(ppe, entry);
+	spin_unlock_bh(&ppe_lock);
 }
 
-int mtk_ppe_init(struct mtk_ppe *ppe, struct device *dev, void __iomem *base,
-		 int version)
+static int
+mtk_foe_entry_commit_l2(struct mtk_ppe *ppe, struct mtk_flow_entry *entry)
 {
-	struct mtk_foe_entry *foe;
+	struct mtk_flow_entry *prev;
+
+	entry->type = MTK_FLOW_TYPE_L2;
+
+	prev = rhashtable_lookup_get_insert_fast(&ppe->l2_flows, &entry->l2_node,
+						 mtk_flow_l2_ht_params);
+	if (likely(!prev))
+		return 0;
+
+	if (IS_ERR(prev))
+		return PTR_ERR(prev);
+
+	return rhashtable_replace_fast(&ppe->l2_flows, &prev->l2_node,
+				       &entry->l2_node, mtk_flow_l2_ht_params);
+}
+
+int mtk_foe_entry_commit(struct mtk_ppe *ppe, struct mtk_flow_entry *entry)
+{
+	const struct mtk_soc_data *soc = ppe->eth->soc;
+	int type = mtk_get_ib1_pkt_type(ppe->eth, entry->data.ib1);
+	u32 hash;
+
+	if (type == MTK_PPE_PKT_TYPE_BRIDGE)
+		return mtk_foe_entry_commit_l2(ppe, entry);
+
+	hash = mtk_ppe_hash_entry(ppe->eth, &entry->data);
+	entry->hash = 0xffff;
+	spin_lock_bh(&ppe_lock);
+	hlist_add_head(&entry->list, &ppe->foe_flow[hash / soc->hash_offset]);
+	spin_unlock_bh(&ppe_lock);
+
+	return 0;
+}
+
+static void
+mtk_foe_entry_commit_subflow(struct mtk_ppe *ppe, struct mtk_flow_entry *entry,
+			     u16 hash)
+{
+	const struct mtk_soc_data *soc = ppe->eth->soc;
+	struct mtk_flow_entry *flow_info;
+	struct mtk_foe_entry foe = {}, *hwe;
+	struct mtk_foe_mac_info *l2;
+	u32 ib1_mask = mtk_get_ib1_pkt_type_mask(ppe->eth) | MTK_FOE_IB1_UDP;
+	int type;
+
+	flow_info = kzalloc(sizeof(*flow_info), GFP_ATOMIC);
+	if (!flow_info)
+		return;
+
+	flow_info->l2_data.base_flow = entry;
+	flow_info->type = MTK_FLOW_TYPE_L2_SUBFLOW;
+	flow_info->hash = hash;
+	hlist_add_head(&flow_info->list,
+		       &ppe->foe_flow[hash / soc->hash_offset]);
+	hlist_add_head(&flow_info->l2_data.list, &entry->l2_flows);
+
+	hwe = mtk_foe_get_entry(ppe, hash);
+	memcpy(&foe, hwe, soc->foe_entry_size);
+	foe.ib1 &= ib1_mask;
+	foe.ib1 |= entry->data.ib1 & ~ib1_mask;
+
+	l2 = mtk_foe_entry_l2(ppe->eth, &foe);
+	memcpy(l2, &entry->data.bridge.l2, sizeof(*l2));
+
+	type = mtk_get_ib1_pkt_type(ppe->eth, foe.ib1);
+	if (type == MTK_PPE_PKT_TYPE_IPV4_HNAPT)
+		memcpy(&foe.ipv4.new, &foe.ipv4.orig, sizeof(foe.ipv4.new));
+	else if (type >= MTK_PPE_PKT_TYPE_IPV6_ROUTE_3T && l2->etype == ETH_P_IP)
+		l2->etype = ETH_P_IPV6;
+
+	*mtk_foe_entry_ib2(ppe->eth, &foe) = entry->data.bridge.ib2;
+
+	__mtk_foe_entry_commit(ppe, &foe, hash);
+}
+
+void __mtk_ppe_check_skb(struct mtk_ppe *ppe, struct sk_buff *skb, u16 hash)
+{
+	const struct mtk_soc_data *soc = ppe->eth->soc;
+	struct hlist_head *head = &ppe->foe_flow[hash / soc->hash_offset];
+	struct mtk_foe_entry *hwe = mtk_foe_get_entry(ppe, hash);
+	struct mtk_flow_entry *entry;
+	struct mtk_foe_bridge key = {};
+	struct hlist_node *n;
+	struct ethhdr *eh;
+	bool found = false;
+	u8 *tag;
+
+	spin_lock_bh(&ppe_lock);
+
+	if (FIELD_GET(MTK_FOE_IB1_STATE, hwe->ib1) == MTK_FOE_STATE_BIND)
+		goto out;
+
+	hlist_for_each_entry_safe(entry, n, head, list) {
+		if (entry->type == MTK_FLOW_TYPE_L2_SUBFLOW) {
+			if (unlikely(FIELD_GET(MTK_FOE_IB1_STATE, hwe->ib1) ==
+				     MTK_FOE_STATE_BIND))
+				continue;
+
+			entry->hash = 0xffff;
+			__mtk_foe_entry_clear(ppe, entry);
+			continue;
+		}
+
+		if (found || !mtk_flow_entry_match(ppe->eth, entry, hwe)) {
+			if (entry->hash != 0xffff)
+				entry->hash = 0xffff;
+			continue;
+		}
+
+		entry->hash = hash;
+		__mtk_foe_entry_commit(ppe, &entry->data, hash);
+		found = true;
+	}
+
+	if (found)
+		goto out;
+
+	eh = eth_hdr(skb);
+	ether_addr_copy(key.dest_mac, eh->h_dest);
+	ether_addr_copy(key.src_mac, eh->h_source);
+	tag = skb->data - 2;
+	key.vlan = 0;
+	switch (skb->protocol) {
+#if IS_ENABLED(CONFIG_NET_DSA)
+	case htons(ETH_P_XDSA):
+		if (!netdev_uses_dsa(skb->dev) ||
+		    skb->dev->dsa_ptr->tag_ops->proto != DSA_TAG_PROTO_MTK)
+			goto out;
+
+		if (!skb_metadata_dst(skb))
+			tag += 4;
+
+		if (get_unaligned_be16(tag) != ETH_P_8021Q)
+			break;
+
+		fallthrough;
+#endif
+	case htons(ETH_P_8021Q):
+		key.vlan = get_unaligned_be16(tag + 2) & VLAN_VID_MASK;
+		break;
+	default:
+		break;
+	}
+
+	entry = rhashtable_lookup_fast(&ppe->l2_flows, &key, mtk_flow_l2_ht_params);
+	if (!entry)
+		goto out;
+
+	mtk_foe_entry_commit_subflow(ppe, entry, hash);
+
+out:
+	spin_unlock_bh(&ppe_lock);
+}
+
+int mtk_foe_entry_idle_time(struct mtk_ppe *ppe, struct mtk_flow_entry *entry)
+{
+	mtk_flow_entry_update(ppe, entry);
+
+	return __mtk_foe_entry_idle_time(ppe, entry->data.ib1);
+}
+
+int mtk_ppe_prepare_reset(struct mtk_ppe *ppe)
+{
+	if (!ppe)
+		return -EINVAL;
+
+	/* disable KA */
+	ppe_clear(ppe, MTK_PPE_TB_CFG, MTK_PPE_TB_CFG_KEEPALIVE);
+	ppe_clear(ppe, MTK_PPE_BIND_LMT1, MTK_PPE_NTU_KEEPALIVE);
+	ppe_w32(ppe, MTK_PPE_KEEPALIVE, 0);
+	usleep_range(10000, 11000);
+
+	/* set KA timer to maximum */
+	ppe_set(ppe, MTK_PPE_BIND_LMT1, MTK_PPE_NTU_KEEPALIVE);
+	ppe_w32(ppe, MTK_PPE_KEEPALIVE, 0xffffffff);
+
+	/* set KA tick select */
+	ppe_set(ppe, MTK_PPE_TB_CFG, MTK_PPE_TB_TICK_SEL);
+	ppe_set(ppe, MTK_PPE_TB_CFG, MTK_PPE_TB_CFG_KEEPALIVE);
+	usleep_range(10000, 11000);
+
+	/* disable scan mode */
+	ppe_clear(ppe, MTK_PPE_TB_CFG, MTK_PPE_TB_CFG_SCAN_MODE);
+	usleep_range(10000, 11000);
+
+	return mtk_ppe_wait_busy(ppe);
+}
+
+struct mtk_foe_accounting *mtk_foe_entry_get_mib(struct mtk_ppe *ppe, u32 index,
+						 struct mtk_foe_accounting *diff)
+{
+	struct mtk_foe_accounting *acct;
+	int size = sizeof(struct mtk_foe_accounting);
+	u64 bytes, packets;
+
+	if (!ppe->accounting)
+		return NULL;
+
+	if (mtk_mib_entry_read(ppe, index, &bytes, &packets))
+		return NULL;
+
+	acct = ppe->acct_table + index * size;
+
+	acct->bytes += bytes;
+	acct->packets += packets;
+
+	if (diff) {
+		diff->bytes = bytes;
+		diff->packets = packets;
+	}
+
+	return acct;
+}
+
+struct mtk_ppe *mtk_ppe_init(struct mtk_eth *eth, void __iomem *base, int index)
+{
+	bool accounting = eth->soc->has_accounting;
+	const struct mtk_soc_data *soc = eth->soc;
+	struct mtk_foe_accounting *acct;
+	struct device *dev = eth->dev;
+	struct mtk_mib_entry *mib;
+	struct mtk_ppe *ppe;
+	u32 foe_flow_size;
+	void *foe;
+
+	ppe = devm_kzalloc(dev, sizeof(*ppe), GFP_KERNEL);
+	if (!ppe)
+		return NULL;
+
+	rhashtable_init(&ppe->l2_flows, &mtk_flow_l2_ht_params);
 
 	/* need to allocate a separate device, since it PPE DMA access is
 	 * not coherent.
 	 */
 	ppe->base = base;
+	ppe->eth = eth;
 	ppe->dev = dev;
-	ppe->version = version;
+	ppe->version = eth->soc->offload_version;
+	ppe->accounting = accounting;
 
-	foe = dmam_alloc_coherent(ppe->dev, MTK_PPE_ENTRIES * sizeof(*foe),
+	foe = dmam_alloc_coherent(ppe->dev,
+				  MTK_PPE_ENTRIES * soc->foe_entry_size,
 				  &ppe->foe_phys, GFP_KERNEL);
 	if (!foe)
-		return -ENOMEM;
+		goto err_free_l2_flows;
 
 	ppe->foe_table = foe;
 
-	mtk_ppe_debugfs_init(ppe);
+	foe_flow_size = (MTK_PPE_ENTRIES / soc->hash_offset) *
+			sizeof(*ppe->foe_flow);
+	ppe->foe_flow = devm_kzalloc(dev, foe_flow_size, GFP_KERNEL);
+	if (!ppe->foe_flow)
+		goto err_free_l2_flows;
 
-	return 0;
+	if (accounting) {
+		mib = dmam_alloc_coherent(ppe->dev, MTK_PPE_ENTRIES * sizeof(*mib),
+					  &ppe->mib_phys, GFP_KERNEL);
+		if (!mib)
+			return NULL;
+
+		ppe->mib_table = mib;
+
+		acct = devm_kzalloc(dev, MTK_PPE_ENTRIES * sizeof(*acct),
+				    GFP_KERNEL);
+
+		if (!acct)
+			return NULL;
+
+		ppe->acct_table = acct;
+	}
+
+	mtk_ppe_debugfs_init(ppe, index);
+
+	return ppe;
+
+err_free_l2_flows:
+	rhashtable_destroy(&ppe->l2_flows);
+	return NULL;
+}
+
+void mtk_ppe_deinit(struct mtk_eth *eth)
+{
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(eth->ppe); i++) {
+		if (!eth->ppe[i])
+			return;
+		rhashtable_destroy(&eth->ppe[i]->l2_flows);
+	}
 }
 
 static void mtk_ppe_init_foe_table(struct mtk_ppe *ppe)
@@ -395,26 +956,34 @@ static void mtk_ppe_init_foe_table(struct mtk_ppe *ppe)
 	static const u8 skip[] = { 12, 25, 38, 51, 76, 89, 102 };
 	int i, k;
 
-	memset(ppe->foe_table, 0, MTK_PPE_ENTRIES * sizeof(ppe->foe_table));
+	memset(ppe->foe_table, 0,
+	       MTK_PPE_ENTRIES * ppe->eth->soc->foe_entry_size);
 
 	if (!IS_ENABLED(CONFIG_SOC_MT7621))
 		return;
 
 	/* skip all entries that cross the 1024 byte boundary */
-	for (i = 0; i < MTK_PPE_ENTRIES; i += 128)
-		for (k = 0; k < ARRAY_SIZE(skip); k++)
-			ppe->foe_table[i + skip[k]].ib1 |= MTK_FOE_IB1_STATIC;
+	for (i = 0; i < MTK_PPE_ENTRIES; i += 128) {
+		for (k = 0; k < ARRAY_SIZE(skip); k++) {
+			struct mtk_foe_entry *hwe;
+
+			hwe = mtk_foe_get_entry(ppe, i + skip[k]);
+			hwe->ib1 |= MTK_FOE_IB1_STATIC;
+		}
+	}
 }
 
-int mtk_ppe_start(struct mtk_ppe *ppe)
+void mtk_ppe_start(struct mtk_ppe *ppe)
 {
 	u32 val;
 
+	if (!ppe)
+		return;
+
 	mtk_ppe_init_foe_table(ppe);
 	ppe_w32(ppe, MTK_PPE_TB_BASE, ppe->foe_phys);
 
-	val = MTK_PPE_TB_CFG_ENTRY_80B |
-	      MTK_PPE_TB_CFG_AGE_NON_L4 |
+	val = MTK_PPE_TB_CFG_AGE_NON_L4 |
 	      MTK_PPE_TB_CFG_AGE_UNBIND |
 	      MTK_PPE_TB_CFG_AGE_TCP |
 	      MTK_PPE_TB_CFG_AGE_UDP |
@@ -425,9 +994,13 @@ int mtk_ppe_start(struct mtk_ppe *ppe)
 			 MTK_PPE_KEEPALIVE_DISABLE) |
 	      FIELD_PREP(MTK_PPE_TB_CFG_HASH_MODE, 1) |
 	      FIELD_PREP(MTK_PPE_TB_CFG_SCAN_MODE,
-			 MTK_PPE_SCAN_MODE_KEEPALIVE_AGE) |
+			 MTK_PPE_SCAN_MODE_CHECK_AGE) |
 	      FIELD_PREP(MTK_PPE_TB_CFG_ENTRY_NUM,
 			 MTK_PPE_ENTRIES_SHIFT);
+	if (mtk_is_netsys_v2_or_greater(ppe->eth))
+		val |= MTK_PPE_TB_CFG_INFO_SEL;
+	if (!mtk_is_netsys_v3_or_greater(ppe->eth))
+		val |= MTK_PPE_TB_CFG_ENTRY_80B;
 	ppe_w32(ppe, MTK_PPE_TB_CFG, val);
 
 	ppe_w32(ppe, MTK_PPE_IP_PROTO_CHK,
@@ -435,16 +1008,21 @@ int mtk_ppe_start(struct mtk_ppe *ppe)
 
 	mtk_ppe_cache_enable(ppe, true);
 
-	val = MTK_PPE_FLOW_CFG_IP4_TCP_FRAG |
-	      MTK_PPE_FLOW_CFG_IP4_UDP_FRAG |
-	      MTK_PPE_FLOW_CFG_IP6_3T_ROUTE |
+	val = MTK_PPE_FLOW_CFG_IP6_3T_ROUTE |
 	      MTK_PPE_FLOW_CFG_IP6_5T_ROUTE |
 	      MTK_PPE_FLOW_CFG_IP6_6RD |
 	      MTK_PPE_FLOW_CFG_IP4_NAT |
 	      MTK_PPE_FLOW_CFG_IP4_NAPT |
 	      MTK_PPE_FLOW_CFG_IP4_DSLITE |
-	      MTK_PPE_FLOW_CFG_L2_BRIDGE |
 	      MTK_PPE_FLOW_CFG_IP4_NAT_FRAG;
+	if (mtk_is_netsys_v2_or_greater(ppe->eth))
+		val |= MTK_PPE_MD_TOAP_BYP_CRSN0 |
+		       MTK_PPE_MD_TOAP_BYP_CRSN1 |
+		       MTK_PPE_MD_TOAP_BYP_CRSN2 |
+		       MTK_PPE_FLOW_CFG_IP4_HASH_GRE_KEY;
+	else
+		val |= MTK_PPE_FLOW_CFG_IP4_TCP_FRAG |
+		       MTK_PPE_FLOW_CFG_IP4_UDP_FRAG;
 	ppe_w32(ppe, MTK_PPE_FLOW_CFG, val);
 
 	val = FIELD_PREP(MTK_PPE_UNBIND_AGE_MIN_PACKETS, 1000) |
@@ -479,7 +1057,20 @@ int mtk_ppe_start(struct mtk_ppe *ppe)
 
 	ppe_w32(ppe, MTK_PPE_DEFAULT_CPU_PORT, 0);
 
-	return 0;
+	if (mtk_is_netsys_v2_or_greater(ppe->eth)) {
+		ppe_w32(ppe, MTK_PPE_DEFAULT_CPU_PORT1, 0xcb777);
+		ppe_w32(ppe, MTK_PPE_SBW_CTRL, 0x7f);
+	}
+
+	if (ppe->accounting && ppe->mib_phys) {
+		ppe_w32(ppe, MTK_PPE_MIB_TB_BASE, ppe->mib_phys);
+		ppe_m32(ppe, MTK_PPE_MIB_CFG, MTK_PPE_MIB_CFG_EN,
+			MTK_PPE_MIB_CFG_EN);
+		ppe_m32(ppe, MTK_PPE_MIB_CFG, MTK_PPE_MIB_CFG_RD_CLR,
+			MTK_PPE_MIB_CFG_RD_CLR);
+		ppe_m32(ppe, MTK_PPE_MIB_CACHE_CTL, MTK_PPE_MIB_CACHE_CTL_EN,
+			MTK_PPE_MIB_CFG_RD_CLR);
+	}
 }
 
 int mtk_ppe_stop(struct mtk_ppe *ppe)
@@ -487,23 +1078,33 @@ int mtk_ppe_stop(struct mtk_ppe *ppe)
 	u32 val;
 	int i;
 
-	for (i = 0; i < MTK_PPE_ENTRIES; i++)
-		ppe->foe_table[i].ib1 = FIELD_PREP(MTK_FOE_IB1_STATE,
-						   MTK_FOE_STATE_INVALID);
+	if (!ppe)
+		return 0;
 
-	mtk_ppe_cache_enable(ppe, false);
+	for (i = 0; i < MTK_PPE_ENTRIES; i++) {
+		struct mtk_foe_entry *hwe = mtk_foe_get_entry(ppe, i);
 
-	/* disable offload engine */
-	ppe_clear(ppe, MTK_PPE_GLO_CFG, MTK_PPE_GLO_CFG_EN);
-	ppe_w32(ppe, MTK_PPE_FLOW_CFG, 0);
+		hwe->ib1 = FIELD_PREP(MTK_FOE_IB1_STATE,
+				      MTK_FOE_STATE_INVALID);
+	}
+
+	mtk_ppe_cache_enable(ppe, false);
 
 	/* disable aging */
 	val = MTK_PPE_TB_CFG_AGE_NON_L4 |
 	      MTK_PPE_TB_CFG_AGE_UNBIND |
 	      MTK_PPE_TB_CFG_AGE_TCP |
 	      MTK_PPE_TB_CFG_AGE_UDP |
-	      MTK_PPE_TB_CFG_AGE_TCP_FIN;
+	      MTK_PPE_TB_CFG_AGE_TCP_FIN |
+		  MTK_PPE_TB_CFG_SCAN_MODE;
 	ppe_clear(ppe, MTK_PPE_TB_CFG, val);
 
-	return mtk_ppe_wait_busy(ppe);
+	if (mtk_ppe_wait_busy(ppe))
+		return -ETIMEDOUT;
+
+	/* disable offload engine */
+	ppe_clear(ppe, MTK_PPE_GLO_CFG, MTK_PPE_GLO_CFG_EN);
+	ppe_w32(ppe, MTK_PPE_FLOW_CFG, 0);
+
+	return 0;
 }