linux-kernel - Re: [PATCH net-next v1] net: Add skb user timestamp flag to distinguish between timestamps

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Message-ID: <6172a734-3bbd-4aa9-a20b-b7b95bb166aa@quicinc.com>
Date: Thu, 15 Feb 2024 15:14:46 -0800
From: Jeff Johnson <quic_jjohnson@...cinc.com>
To: Abhishek Chauhan <quic_abchauha@...cinc.com>,
        "David S. Miller"
	<davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski
	<kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>, <netdev@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, Andrew Halaney <ahalaney@...hat.com>
CC: <kernel@...cinc.com>
Subject: Re: [PATCH net-next v1] net: Add skb user timestamp flag to
 distinguish between timestamps

On 2/15/2024 1:56 PM, Abhishek Chauhan wrote:
> Bridge driver today has no support to forward the userspace timestamp
> packets and ends up resetting the timestamp. ETF qdisc checks the
> packet coming from userspace and encounters to be 0 thereby dropping
> time sensitive packets. These changes will allow userspace timestamps
> packets to be forwarded from the bridge to NIC drivers.
> 
> Signed-off-by: Abhishek Chauhan <quic_abchauha@...cinc.com>
> ---
> Note:- I am a little skeptical of using bool inside the skbuff
> structure as no one today has used bool so far in the struct.
> (Expecting some comments from upstream for sure) 

there are a large number of u8 <flag>:1 bitfields -- suggest you do the same