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Miller" , "netdev@vger.kernel.org" , "linux-kernel@vger.kernel.org" , Vladimir Oltean Subject: RE: [EXT] Re: [PATCH net-next 5/7] net: marvell: prestera: add LAG support Thread-Topic: [EXT] Re: [PATCH net-next 5/7] net: marvell: prestera: add LAG support Thread-Index: AQHW+34dqeNi3qeAj0SumJjdXBCv2KpOsW+AgAAT+ICAARriAIAAPIIAgAAh5tA= Date: Tue, 9 Feb 2021 20:31:32 +0000 Message-ID: References: <20210203165458.28717-1-vadym.kochan@plvision.eu> <20210203165458.28717-6-vadym.kochan@plvision.eu> <20210204211647.7b9a8ebf@kicinski-fedora-pc1c0hjn.dhcp.thefacebook.com> <87v9b249oq.fsf@waldekranz.com> <20210208130557.56b14429@kicinski-fedora-pc1c0hjn.dhcp.thefacebook.com> <20210209093500.53b55ca8@kicinski-fedora-pc1c0hjn.dhcp.thefacebook.com> In-Reply-To: <20210209093500.53b55ca8@kicinski-fedora-pc1c0hjn.dhcp.thefacebook.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: authentication-results: kernel.org; dkim=none (message not signed) header.d=none;kernel.org; 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charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: BN6PR18MB1587.namprd18.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: 9c0df967-ea05-4796-c9b5-08d8cd39b01c X-MS-Exchange-CrossTenant-originalarrivaltime: 09 Feb 2021 20:31:32.3162 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 70e1fb47-1155-421d-87fc-2e58f638b6e0 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: H28g5bfhm/eVrr5DDXQ7Y9C9WrvecxiNU55ibfs1gEU6fRsgICOgRd8Nnt8+oR67p2De6M2uF6ZeG1LCG3JHyA== X-MS-Exchange-Transport-CrossTenantHeadersStamped: BN8PR18MB3009 X-OriginatorOrg: marvell.com X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.369,18.0.737 definitions=2021-02-09_07:2021-02-09,2021-02-09 signatures=0 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Andrew, Jakub, Tobias, On Tuesday, February 9, 2021 7:35 PM Jakub Kicinski wrote: > Sounds like we have 3 people who don't like FW-heavy designs dominating t= he kernel - this conversation can only go one way.=20 > Marvell, Plvision anything to share? AFAIU the values of Linux kernel are= open source, healthy community, empowering users. With the SDK on the embe= dded CPU your driver does not seem to tick any of these boxes. I'll try to share Marvell's insight and plans regarding our Prestera driver= s; =20 We do understand the importance and the vision behind the open-source commu= nity - while being committed to quality, functionality and the developers/e= nd-users. We started working on the Prestera driver in Q2 2019. it took us more than = a year to get the first approved driver into 5.10, and we just started. Right at the beginning - we implemented PP function into the Kernel driver = like the SDMA operation (This is the RX/TX DMA engine).=20 Yet, the FW itself - is an SW package that supports many Marvell Prestera S= witching families of devices - this is a significant SW package that will t= ake many working years to adapt to the Kernel environment. We do plan to port more and more PP functions as Kernel drivers along the w= ay. =20 We also are working with the community to extend Kernel functionality with = a new feature beneficial to all Kernel users (e.g. Devlink changes) and we = will continue to do it. By extending the Prestera driver to in-kernel implementation with more PP f= eatures - we will simplify the FW logic and enables cost-effective solution= s to the market/developers. Regards, Mickey.