netdev - Re: [net-next Patch V4 0/4] octeontx2-pf: HTB offload support

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Message-ID: <CO6PR18MB446772A3AA4FAC152919CD56DEDD9@CO6PR18MB4467.namprd18.prod.outlook.com>
Date:   Mon, 13 Feb 2023 06:22:12 +0000
From:   Hariprasad Kelam <hkelam@...vell.com>
To:     Jakub Kicinski <kuba@...nel.org>
CC:     "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "davem@...emloft.net" <davem@...emloft.net>,
        "pabeni@...hat.com" <pabeni@...hat.com>,
        "edumazet@...gle.com" <edumazet@...gle.com>,
        Sunil Kovvuri Goutham <sgoutham@...vell.com>,
        Linu Cherian <lcherian@...vell.com>,
        Geethasowjanya Akula <gakula@...vell.com>,
        Jerin Jacob Kollanukkaran <jerinj@...vell.com>,
        Subbaraya Sundeep Bhatta <sbhatta@...vell.com>,
        "jhs@...atatu.com" <jhs@...atatu.com>,
        "xiyou.wangcong@...il.com" <xiyou.wangcong@...il.com>,
        "jiri@...nulli.us" <jiri@...nulli.us>,
        "saeedm@...dia.com" <saeedm@...dia.com>,
        "richardcochran@...il.com" <richardcochran@...il.com>,
        "tariqt@...dia.com" <tariqt@...dia.com>,
        "linux-rdma@...r.kernel.org" <linux-rdma@...r.kernel.org>,
        "maxtram95@...il.com" <maxtram95@...il.com>,
        Naveen Mamindlapalli <naveenm@...vell.com>,
        "bpf@...r.kernel.org" <bpf@...r.kernel.org>,
        "hariprasad.netdev@...il.com" <hariprasad.netdev@...il.com>
Subject: Re: [net-next Patch V4 0/4] octeontx2-pf: HTB offload support



> On Fri, 10 Feb 2023 16:40:47 +0530 Hariprasad Kelam wrote:
> > octeontx2 silicon and CN10K transmit interface consists of five
> > transmit levels starting from MDQ, TL4 to TL1. Once packets are
> > submitted to MDQ, hardware picks all active MDQs using strict
> > priority, and MDQs having the same priority level are chosen using
> > round robin. Each packet will traverse MDQ, TL4 to TL1 levels.
> > Each level contains an array of queues to support scheduling and
> > shaping.
> >
> > As HTB supports classful queuing mechanism by supporting rate and ceil
> > and allow the user to control the absolute bandwidth to particular
> > classes of traffic the same can be achieved by configuring shapers and
> > schedulers on different transmit levels.
> 
> Please provide or link to some user-facing documentation under
> Documentation/networking/device_drivers/ethernet/marvell/octeon...

ACK, will add in next version.