linux-kernel - Re: [PATCH net] gve: Check valid ts bit on RX descriptor before hw timestamping

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Message-ID: <aO5IZYjGHe3xpzPK@horms.kernel.org>
Date: Tue, 14 Oct 2025 13:56:05 +0100
From: Simon Horman <horms@...nel.org>
To: Harshitha Ramamurthy <hramamurthy@...gle.com>
Cc: netdev@...r.kernel.org, joshwash@...gle.com, andrew+netdev@...n.ch,
	davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org,
	pabeni@...hat.com, willemb@...gle.com, pkaligineedi@...gle.com,
	jfraker@...gle.com, ziweixiao@...gle.com, thostet@...gle.com,
	linux-kernel@...r.kernel.org, stable@...r.kernel.org
Subject: Re: [PATCH net] gve: Check valid ts bit on RX descriptor before hw
 timestamping

On Tue, Oct 14, 2025 at 12:47:39AM +0000, Harshitha Ramamurthy wrote:
> From: Tim Hostetler <thostet@...gle.com>
> 
> The device returns a valid bit in the LSB of the low timestamp byte in
> the completion descriptor that the driver should check before
> setting the SKB's hardware timestamp. If the timestamp is not valid, do not
> hardware timestamp the SKB.
> 
> Cc: stable@...r.kernel.org
> Fixes: b2c7aeb49056 ("gve: Implement ndo_hwtstamp_get/set for RX timestamping")
> Reviewed-by: Joshua Washington <joshwash@...gle.com>
> Signed-off-by: Tim Hostetler <thostet@...gle.com>
> Signed-off-by: Harshitha Ramamurthy <hramamurthy@...gle.com>

Reviewed-by: Simon Horman <horms@...nel.org>