This is a note to let you know that I've just added the patch titled
net: ethernet: mtk_eth_soc: add missing ppe cache flush when deleting a flow
to the 6.1-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
net-ethernet-mtk_eth_soc-add-missing-ppe-cache-flush.patch
and it can be found in the queue-6.1 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 1919ba92d72bd121410a1ef35bb1ab43d4606c1d
Author: Felix Fietkau <nbd@xxxxxxxx>
Date: Thu Mar 30 14:08:40 2023 +0200
net: ethernet: mtk_eth_soc: add missing ppe cache flush when deleting a flow
[ Upstream commit 924531326e2dd4ceabe7240f2b55a88e7d894ec2 ]
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@xxxxxxxxxxxx>
Signed-off-by: Felix Fietkau <nbd@xxxxxxxx>
Reviewed-by: Leon Romanovsky <leonro@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20230330120840.52079-3-nbd@xxxxxxxx
Signed-off-by: Jakub Kicinski <kuba@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/net/ethernet/mediatek/mtk_ppe.c b/drivers/net/ethernet/mediatek/mtk_ppe.c
index 34ea8af48c3d0..d6eed204574a9 100644
--- a/drivers/net/ethernet/mediatek/mtk_ppe.c
+++ b/drivers/net/ethernet/mediatek/mtk_ppe.c
@@ -438,6 +438,7 @@ __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;
