Subject: Re: [RFCv4 PATCH net-next 1/3] net-next: ethtool: extend ringparam set/get APIs for tx_push

From: Jakub Kicinski <[email-masked]>
Date: Thu, 31 Mar 2022 20:22:50 -0700

On Thu, 31 Mar 2022 16:43:40 +0800 Jie Wang wrote:
> +``ETHTOOL_A_RINGS_TX_PUSH`` controls flag to choose the fast path or the
> +normal path to send packets. Setting tx push attribute "on" will enable tx
> +push mode and send packets in fast path. For those not supported hardwares,
> +this attributes is "off" by default settings.

You need to be more specific what a "fast path" is, that term is 
too general.

I presume you want to say something about the descriptor being written
directly into device address space... and that it lowers the latency
but increases the cost...