netdev - [PATCH RFC v1] net: ethernet: mtk_ppe: Change PPE entries number to 32K

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Date: Sat, 22 Jun 2024 19:23:35 +0800
From: Shengyu Qu <wiagn233@...look.com>
To: nbd@....name,
	sean.wang@...iatek.com,
	Mark-MC.Lee@...iatek.com,
	lorenzo@...nel.org,
	davem@...emloft.net,
	edumazet@...gle.com,
	kuba@...nel.org,
	pabeni@...hat.com,
	matthias.bgg@...il.com,
	angelogioacchino.delregno@...labora.com,
	netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-mediatek@...ts.infradead.org
Cc: Shengyu Qu <wiagn233@...look.com>,
	Elad Yifee <eladwf@...il.com>
Subject: [PATCH RFC v1] net: ethernet: mtk_ppe: Change PPE entries number to 32K

MT7981,7986 and 7988 all supports 32768 PPE entries, but only set to
8192 entries in driver. So incrase max entries to 12768 instead.

Signed-off-by: Elad Yifee <eladwf@...il.com>
Signed-off-by: Shengyu Qu <wiagn233@...look.com>
---
This patch is set to RFC because I cannot find any documentation for
earlier devices like MT7621 that describes their max entries, and need
more information or testing to find out whether this patch would work on
those devices.
---
 drivers/net/ethernet/mediatek/mtk_ppe.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/mediatek/mtk_ppe.h b/drivers/net/ethernet/mediatek/mtk_ppe.h
index 691806bca372..6db85d897fa9 100644
--- a/drivers/net/ethernet/mediatek/mtk_ppe.h
+++ b/drivers/net/ethernet/mediatek/mtk_ppe.h
@@ -8,7 +8,7 @@
 #include <linux/bitfield.h>
 #include <linux/rhashtable.h>
 
-#define MTK_PPE_ENTRIES_SHIFT		3
+#define MTK_PPE_ENTRIES_SHIFT		5
 #define MTK_PPE_ENTRIES			(1024 << MTK_PPE_ENTRIES_SHIFT)
 #define MTK_PPE_HASH_MASK		(MTK_PPE_ENTRIES - 1)
 #define MTK_PPE_WAIT_TIMEOUT_US		1000000
-- 
2.34.1