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
next prev parent 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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