netdev - RE: [PATCH v3 net-next 2/2] net: airoha: Introduce ethernet support for EN7581 SoC

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Date: Mon, 24 Jun 2024 13:03:23 +0000
From: Sunil Kovvuri Goutham <sgoutham@...vell.com>
To: Lorenzo Bianconi <lorenzo@...nel.org>,
        "netdev@...r.kernel.org"
	<netdev@...r.kernel.org>
CC: "nbd@....name" <nbd@....name>,
        "lorenzo.bianconi83@...il.com"
	<lorenzo.bianconi83@...il.com>,
        "davem@...emloft.net" <davem@...emloft.net>,
        "edumazet@...gle.com" <edumazet@...gle.com>,
        "kuba@...nel.org"
	<kuba@...nel.org>,
        "pabeni@...hat.com" <pabeni@...hat.com>,
        "conor@...nel.org" <conor@...nel.org>,
        "linux-arm-kernel@...ts.infradead.org"
	<linux-arm-kernel@...ts.infradead.org>,
        "robh+dt@...nel.org"
	<robh+dt@...nel.org>,
        "krzysztof.kozlowski+dt@...aro.org"
	<krzysztof.kozlowski+dt@...aro.org>,
        "conor+dt@...nel.org"
	<conor+dt@...nel.org>,
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	<catalin.marinas@....com>,
        "will@...nel.org" <will@...nel.org>,
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        "angelogioacchino.delregno@...labora.com"
	<angelogioacchino.delregno@...labora.com>,
        "benjamin.larsson@...exis.eu"
	<benjamin.larsson@...exis.eu>,
        Ratheesh Kannoth <rkannoth@...vell.com>,
        "andrew@...n.ch" <andrew@...n.ch>
Subject: RE: [PATCH v3 net-next 2/2] net: airoha: Introduce ethernet support
 for EN7581 SoC

>Add airoha_eth driver in order to introduce ethernet support for
>Airoha EN7581 SoC available on EN7581 development board (en7581-evb).
>en7581-evb networking architecture is composed by airoha_eth as mac
>controller (cpu port) and a mt7530 dsa based switch.
>EN7581 mac controller is mainly composed by Frame Engine (FE) and
>QoS-DMA (QDMA) modules. FE is used for traffic offloading (just basic
>functionalities are supported now) while QDMA is used for DMA operation
>and QOS functionalities between mac layer and the dsa switch (hw QoS is
>not available yet and it will be added in the future).
>Currently only hw lan features are available, hw wan will be added with
>subsequent patches.
>
>Tested-by: Benjamin Larsson <benjamin.larsson@...exis.eu>
>Signed-off-by: Lorenzo Bianconi <lorenzo@...nel.org>
>---
>
>+
>+static int airoha_qdma_rx_process(struct airoha_queue *q, int budget)
>+{
......................
>+		skb->ip_summed = CHECKSUM_UNNECESSARY;

Unconditionally setting UNNECESSARY for all pkts.
Does HW reports csum errors ?

Thanks,
Sunil.