linux-kernel - Re: [PATCH net-next 5/6] gve: Add support for SIOC[GS]HWTSTAMP IOCTLs

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Message-ID: <aAhH5_kFB0Jrf4xj@LQ3V64L9R2>
Date: Tue, 22 Apr 2025 18:52:39 -0700
From: Joe Damato <jdamato@...tly.com>
To: Harshitha Ramamurthy <hramamurthy@...gle.com>
Cc: netdev@...r.kernel.org, davem@...emloft.net, edumazet@...gle.com,
	kuba@...nel.org, pabeni@...hat.com, jeroendb@...gle.com,
	andrew+netdev@...n.ch, willemb@...gle.com, ziweixiao@...gle.com,
	pkaligineedi@...gle.com, yyd@...gle.com, joshwash@...gle.com,
	shailend@...gle.com, linux@...blig.org, thostet@...gle.com,
	jfraker@...gle.com, horms@...nel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH net-next 5/6] gve: Add support for SIOC[GS]HWTSTAMP IOCTLs

On Fri, Apr 18, 2025 at 10:12:53PM +0000, Harshitha Ramamurthy wrote:
> From: John Fraker <jfraker@...gle.com>
> 
> Add support for the SIOCSHWTSTAMP and SIOCGHWTSTAMP IOCTL methods using
> gve_get_ts_config and gve_set_ts_config. Included with this support is
> the small change necessary to read the rx timestamp out of the rx
> descriptor, now that timestamps start being enabled. The gve clock is
> only used for hardware timestamps, so started when timestamps are
> requested and stopped when not needed.
> 
> This version only supports RX hardware timestamping with the rx filter
> HWTSTAMP_FILTER_ALL. If the user attempts to configure a more
> restrictive filter, the filter will be set to HWTSTAMP_FILTER_ALL in the
> returned structure.
> 
> Co-developed-by: Ziwei Xiao <ziweixiao@...gle.com>
> Signed-off-by: Ziwei Xiao <ziweixiao@...gle.com>
> Reviewed-by: Willem de Bruijn <willemb@...gle.com>
> Signed-off-by: John Fraker <jfraker@...gle.com>
> Signed-off-by: Harshitha Ramamurthy <hramamurthy@...gle.com>

Reviewed-by: Joe Damato <jdamato@...tly.com>