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Message-ID: <20220329162057.7bba69cd@kernel.org>
Date:   Tue, 29 Mar 2022 16:20:57 -0700
From:   Jakub Kicinski <kuba@...nel.org>
To:     Jie Wang <wangjie125@...wei.com>
Cc:     <mkubecek@...e.cz>, <davem@...emloft.net>,
        <netdev@...r.kernel.org>, <huangguangbin2@...wei.com>,
        <lipeng321@...wei.com>, <shenjian15@...wei.com>,
        <moyufeng@...wei.com>, <linyunsheng@...wei.com>,
        <salil.mehta@...wei.com>, <chenhao288@...ilicon.com>
Subject: Re: [RFCv3 PATCH net-next 1/2] net-next: ethtool: extend ringparam
 set/get APIs for tx_push

On Tue, 29 Mar 2022 17:19:12 +0800 Jie Wang wrote:
> diff --git a/Documentation/networking/ethtool-netlink.rst b/Documentation/networking/ethtool-netlink.rst
> index 24d9be69065d..424159027309 100644
> --- a/Documentation/networking/ethtool-netlink.rst
> +++ b/Documentation/networking/ethtool-netlink.rst
> @@ -862,6 +862,7 @@ Kernel response contents:
>    ``ETHTOOL_A_RINGS_RX_BUF_LEN``        u32     size of buffers on the ring
>    ``ETHTOOL_A_RINGS_TCP_DATA_SPLIT``    u8      TCP header / data split
>    ``ETHTOOL_A_RINGS_CQE_SIZE``          u32     Size of TX/RX CQE
> +  ``ETHTOOL_A_RINGS_TX_PUSH``           u8      flag of TX Push mode
>    ====================================  ======  ===========================
>  
>  ``ETHTOOL_A_RINGS_TCP_DATA_SPLIT`` indicates whether the device is usable with
> @@ -887,6 +888,7 @@ Request contents:
>    ``ETHTOOL_A_RINGS_TX``                u32     size of TX ring
>    ``ETHTOOL_A_RINGS_RX_BUF_LEN``        u32     size of buffers on the ring
>    ``ETHTOOL_A_RINGS_CQE_SIZE``          u32     Size of TX/RX CQE
> +  ``ETHTOOL_A_RINGS_TX_PUSH``           u8      flag of TX Push mode
>    ====================================  ======  ===========================
>  
>  Kernel checks that requested ring sizes do not exceed limits reported by

You need to also describe what it does. Do you have a user manual 
or some form of feature documentation that could be used as a starting
point. We're happy to help with the wording and grammar but you need 
to give us a description of the feature so we're not guessing.

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