netdev - [PATCH net v2 3/3] net: ethernet: mtk_eth_soc: add missing ppe cache flush when deleting a flow

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Message-Id: <20230330120840.52079-3-nbd@nbd.name>
Date:   Thu, 30 Mar 2023 14:08:40 +0200
From:   Felix Fietkau <nbd@....name>
To:     netdev@...r.kernel.org
Subject: [PATCH net v2 3/3] net: ethernet: mtk_eth_soc: add missing ppe cache flush when deleting a flow

The cache needs to be flushed to ensure that the hardware stops offloading
the flow immediately.

Fixes: 33fc42de3327 ("net: ethernet: mtk_eth_soc: support creating mac address based offload entries")
Reviewed-by: Simon Horman <simon.horman@...igine.com>
Signed-off-by: Felix Fietkau <nbd@....name>
---
 drivers/net/ethernet/mediatek/mtk_ppe.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/ethernet/mediatek/mtk_ppe.c b/drivers/net/ethernet/mediatek/mtk_ppe.c
index a038b99ecbda..fd07d6e14273 100644
--- a/drivers/net/ethernet/mediatek/mtk_ppe.c
+++ b/drivers/net/ethernet/mediatek/mtk_ppe.c
@@ -459,6 +459,7 @@ __mtk_foe_entry_clear(struct mtk_ppe *ppe, struct mtk_flow_entry *entry)
 		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);
 	}
 	entry->hash = 0xffff;
 
-- 
2.39.0