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Date: Fri, 01 Mar 2024 17:21:33 -0500
From: Willem de Bruijn <willemdebruijn.kernel@...il.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>, 
 Willem de Bruijn <willemdebruijn.kernel@...il.com>, 
 Martin KaFai Lau <martin.lau@...nel.org>, 
 Martin KaFai Lau <martin.lau@...ux.dev>
Cc: kernel@...cinc.com
Subject: Re: [PATCH net-next v4] net: Re-use and set mono_delivery_time bit
 for userspace tstamp packets

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.
> 
> Setting the same bit (mono_delivery_time) to avoid dropping of
> userspace tstamp packets in the forwarding path.
> 
> Existing functionality of mono_delivery_time remains unaltered here,
> instead just extended with userspace tstamp support for bridge
> forwarding path.
> 
> Signed-off-by: Abhishek Chauhan <quic_abchauha@...cinc.com>

Reviewed-by: Willem de Bruijn <willemb@...gle.com>

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