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From: Jakub Kicinski <kuba@kernel.org>
To: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Cc: davem@davemloft.net, edumazet@google.com, pabeni@redhat.com,
	netdev@vger.kernel.org, linux-renesas-soc@vger.kernel.org
Subject: Re: [PATCH net-next 4/4] net: renesas: rswitch: Improve TX timestamp accuracy
Date: Wed, 8 Feb 2023 16:06:34 -0800	[thread overview]
Message-ID: <20230208160634.33d2abfd@kernel.org> (raw)
In-Reply-To: <20230208073445.2317192-5-yoshihiro.shimoda.uh@renesas.com>

On Wed,  8 Feb 2023 16:34:45 +0900 Yoshihiro Shimoda wrote:
> In the previous code, TX timestamp accuracy was bad because the irq
> handler got the timestamp from the timestamp register at that time.
> 
> This hardware has "Timestamp capture" feature which can store
> each TX timestamp into the timestamp descriptors. To improve
> TX timestamp accuracy, implement timestamp descriptors' handling.

2 new sparse warnings here:

drivers/net/ethernet/renesas/rswitch.c:917:24: warning: restricted __le32 degrades to integer
drivers/net/ethernet/renesas/rswitch.c:918:23: warning: restricted __le32 degrades to integer

  reply	other threads:[~2023-02-09  0:06 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-02-08  7:34 [PATCH net-next 0/4] net: renesas: rswitch: Improve TX timestamp accuracy Yoshihiro Shimoda
2023-02-08  7:34 ` [PATCH net-next 1/4] net: renesas: rswitch: Rename rings in struct rswitch_gwca_queue Yoshihiro Shimoda
2023-02-08  7:34 ` [PATCH net-next 2/4] net: renesas: rswitch: Move linkfix variables to rswitch_gwca Yoshihiro Shimoda
2023-02-08  7:34 ` [PATCH net-next 3/4] net: renesas: rswitch: Remove gptp flag from rswitch_gwca_queue Yoshihiro Shimoda
2023-02-08 16:06   ` Alexander H Duyck
2023-02-08 23:33     ` Yoshihiro Shimoda
2023-02-09  1:01       ` Alexander Duyck
2023-02-09  1:13         ` Yoshihiro Shimoda
2023-02-08  7:34 ` [PATCH net-next 4/4] net: renesas: rswitch: Improve TX timestamp accuracy Yoshihiro Shimoda
2023-02-09  0:06   ` Jakub Kicinski [this message]
2023-02-09  1:06     ` Yoshihiro Shimoda

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