netdev - Re: [net-next PATCH 5/5] octeontx2-pf: Add support for HTB offload

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Date:   Fri, 13 Jan 2023 14:18:45 +0200
From:   Maxim Mikityanskiy <maxtram95@...il.com>
To:     Hariprasad Kelam <hkelam@...vell.com>
Cc:     netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        kuba@...nel.org, davem@...emloft.net, pabeni@...hat.com,
        edumazet@...gle.com, sgoutham@...vell.com, lcherian@...vell.com,
        gakula@...vell.com, jerinj@...vell.com, sbhatta@...vell.com,
        Naveen Mamindlapalli <naveenm@...vell.com>,
        Tariq Toukan <tariqt@...dia.com>,
        Saeed Mahameed <saeedm@...dia.com>,
        Gal Pressman <gal@...dia.com>
Subject: Re: [net-next PATCH 5/5] octeontx2-pf: Add support for HTB offload

On Thu, Jan 12, 2023 at 11:01:20PM +0530, Hariprasad Kelam wrote:
> From: Naveen Mamindlapalli <naveenm@...vell.com>
> 
> This patch registers callbacks to support HTB offload.
> 
> Below are features supported,
> 
> - supports traffic shaping on the given class by honoring rate and ceil
> configuration.
> 
> - supports traffic scheduling,  which prioritizes different types of
> traffic based on strict priority values.
> 
> - supports the creation of leaf to inner classes such that parent node
> rate limits apply to all child nodes.
> 
> Signed-off-by: Naveen Mamindlapalli <naveenm@...vell.com>
> Signed-off-by: Hariprasad Kelam <hkelam@...vell.com>
> Signed-off-by: Sunil Kovvuri Goutham <sgoutham@...vell.com>
> ---

Great job! Nice to see the second user of HTB offload.

(Ccing Mellanox folks for more eyes on the series [1].)

[1]: https://lore.kernel.org/all/20230112173120.23312-1-hkelam@marvell.com/

> +	case TC_HTB_NODE_MODIFY:
> +		fallthrough;
> +	default:
> +		return -EOPNOTSUPP;

Is there any technical difficulty or hardware limitation preventing from
implementing modifications?