netdev - Re: [PATCH net-next v7 13/15] net: airoha: Introduce flowtable offload support

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Message-ID: <20250226194310.03398da0@kernel.org>
Date: Wed, 26 Feb 2025 19:43:10 -0800
From: Jakub Kicinski <kuba@...nel.org>
To: Lorenzo Bianconi <lorenzo@...nel.org>
Cc: Andrew Lunn <andrew+netdev@...n.ch>, "David S. Miller"
 <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, Paolo Abeni
 <pabeni@...hat.com>, Felix Fietkau <nbd@....name>, Sean Wang
 <sean.wang@...iatek.com>, Matthias Brugger <matthias.bgg@...il.com>,
 AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>,
 Philipp Zabel <p.zabel@...gutronix.de>, Rob Herring <robh@...nel.org>,
 Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley
 <conor+dt@...nel.org>, "Chester A. Unal" <chester.a.unal@...nc9.com>,
 Daniel Golle <daniel@...rotopia.org>, DENG Qingfang <dqfext@...il.com>,
 Andrew Lunn <andrew@...n.ch>, Vladimir Oltean <olteanv@...il.com>,
 netdev@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
 linux-mediatek@...ts.infradead.org, devicetree@...r.kernel.org,
 upstream@...oha.com, Sayantan Nandy <sayantan.nandy@...oha.com>
Subject: Re: [PATCH net-next v7 13/15] net: airoha: Introduce flowtable
 offload support

On Mon, 24 Feb 2025 12:25:33 +0100 Lorenzo Bianconi wrote:
> +	foe_size = PPE_NUM_ENTRIES * sizeof(struct airoha_foe_entry);
> +	ppe->foe = dmam_alloc_coherent(eth->dev, foe_size, &ppe->foe_dma,
> +				       GFP_KERNEL | __GFP_ZERO);

dmam_alloc_coherent() always zeros the memory, the GFP_ZERO is not necessary