kernel: mtk_ppe: use MTK_FOE_STATE_INVALID instead of *_UNBIND

Instead of dropping *fix-typo-in-__mtk_foe_entry.patch which effectively
means keeping the (also wrong) assignment of MTK_FOE_STATE_BIND, rather
use MTK_FOE_STATE_INVALID as that works well on both older (NETSYS_V1)
and newer (NETSYS_V2) MediaTek SoCs.

Suggested-by: Felix Fietkau <[email protected]>
Signed-off-by: Daniel Golle <[email protected]>

target/linux/generic/backport-5.15/718-v6.0-net-ethernet-mtk_eth_soc-fix-typo-in-__mtk_foe_entry.patch

@@ -0,0 +1,27 @@
+From 12ff69304c83c679ca01ef3db963ab0db9de19fb Mon Sep 17 00:00:00 2001
+Message-Id: <12ff69304c83c679ca01ef3db963ab0db9de19fb.1662332102.git.lorenzo@kernel.org>
+In-Reply-To: <2a60545635c2705312299384f4e9fec2f2a3acd6.1662332102.git.lorenzo@kernel.org>
+References: <2a60545635c2705312299384f4e9fec2f2a3acd6.1662332102.git.lorenzo@kernel.org>
+From: Lorenzo Bianconi <[email protected]>
+Date: Mon, 5 Sep 2022 00:43:43 +0200
+Subject: [PATCH net-next 2/6] net: ethernet: mtk_eth_soc: fix typo in
+ __mtk_foe_entry_clear
+
+Set ib1 state to MTK_FOE_STATE_UNBIND in __mtk_foe_entry_clear routine.
+
+Signed-off-by: Lorenzo Bianconi <[email protected]>
+---
+ drivers/net/ethernet/mediatek/mtk_ppe.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/net/ethernet/mediatek/mtk_ppe.c
++++ b/drivers/net/ethernet/mediatek/mtk_ppe.c
+@@ -413,7 +413,7 @@ __mtk_foe_entry_clear(struct mtk_ppe *pp
+ 		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_BIND);
++		hwe->ib1 |= FIELD_PREP(MTK_FOE_IB1_STATE, MTK_FOE_STATE_UNBIND);
+ 		dma_wmb();
+ 	}
+ 	entry->hash = 0xffff;

target/linux/generic/pending-5.15/782-net-ethernet-mtk_eth_soc-fix-state-in-__mtk_foe_entr.patch

@@ -0,0 +1,51 @@
+From cd8e1f340c3e571b78952d4ca2c128d183a47cc2 Mon Sep 17 00:00:00 2001
+From: Daniel Golle <[email protected]>
+Date: Wed, 28 Sep 2022 02:17:02 +0100
+Subject: [PATCH] net: ethernet: mtk_eth_soc: fix state in
+ __mtk_foe_entry_clear
+To: [email protected],
+    [email protected],
+    Lorenzo Bianconi <[email protected]>
+Cc: Sujuan Chen <[email protected]>,
+    Bo Jiao <[email protected]>,
+    Felix Fietkau <[email protected]>,
+    John Crispin <[email protected]>,
+    Sean Wang <[email protected]>,
+    Mark Lee <[email protected]>,
+    David S. Miller <[email protected]>,
+    Eric Dumazet <[email protected]>,
+    Jakub Kicinski <[email protected]>,
+    Paolo Abeni <[email protected]>,
+    Matthias Brugger <[email protected]>,
+    Chen Minqiang <[email protected]>,
+    Thomas Hühn <[email protected]>
+
+Setting ib1 state to MTK_FOE_STATE_UNBIND in __mtk_foe_entry_clear
+routine as done by commit 0e80707d94e4c8 ("net: ethernet: mtk_eth_soc:
+fix typo in __mtk_foe_entry_clear") breaks flow offloading, at least
+on older MTK_NETSYS_V1 SoCs, OpenWrt users have confirmed the bug on
+MT7622 and MT7621 systems.
+Felix Fietkau suggested to use MTK_FOE_STATE_INVALID instead which
+works well on both, MTK_NETSYS_V1 and MTK_NETSYS_V2.
+
+Tested on MT7622 (Linksys E8450) and MT7986 (BananaPi BPI-R3).
+
+Suggested-by: Felix Fietkau <[email protected]>
+Fixes: 0e80707d94e4c8 ("net: ethernet: mtk_eth_soc: fix typo in __mtk_foe_entry_clear")
+Fixes: 33fc42de33278 ("net: ethernet: mtk_eth_soc: support creating mac address based offload entries")
+Signed-off-by: Daniel Golle <[email protected]>
+---
+ drivers/net/ethernet/mediatek/mtk_ppe.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/net/ethernet/mediatek/mtk_ppe.c
++++ b/drivers/net/ethernet/mediatek/mtk_ppe.c
+@@ -442,7 +442,7 @@ __mtk_foe_entry_clear(struct mtk_ppe *pp
+ 		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_UNBIND);
++		hwe->ib1 |= FIELD_PREP(MTK_FOE_IB1_STATE, MTK_FOE_STATE_INVALID);
+ 		dma_wmb();
+ 	}
+ 	entry->hash = 0xffff;