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Message-ID: <8fb6f818-e818-4ba2-b1a9-e4468d4496aa@omp.ru>
Date: Mon, 30 Sep 2024 22:39:11 +0300
From: Sergey Shtylyov <s.shtylyov@....ru>
To: Paul Barker <paul@...rker.dev>, "David S . Miller" <davem@...emloft.net>,
Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>, Paolo
Abeni <pabeni@...hat.com>
CC: Paul Barker <paul.barker.ct@...renesas.com>, Geert Uytterhoeven
<geert+renesas@...der.be>, Niklas Söderlund
<niklas.soderlund+renesas@...natech.se>, Biju Das
<biju.das.jz@...renesas.com>, Claudiu Beznea
<claudiu.beznea.uj@...renesas.com>, <netdev@...r.kernel.org>,
<linux-renesas-soc@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [net-next PATCH 07/11] net: ravb: Simplify UDP TX checksum
offload
On 9/30/24 19:08, Paul Barker wrote:
> From: Paul Barker <paul.barker.ct@...renesas.com>
>
> The GbEth IP will pass through a null UDP checksum without asserting any
s/null/zero/, perhaps?
> error flags so we do not need to resort to software checksum calculation
> in this case.
>
> Signed-off-by: Paul Barker <paul.barker.ct@...renesas.com>
Reviewed-by: Sergey Shtylyov <s.shtylyov@....ru>
[...]
> diff --git a/drivers/net/ethernet/renesas/ravb_main.c b/drivers/net/ethernet/renesas/ravb_main.c
> index 9350ca10ab22..ae0268f2eb04 100644
> --- a/drivers/net/ethernet/renesas/ravb_main.c
> +++ b/drivers/net/ethernet/renesas/ravb_main.c
> @@ -2075,20 +2075,12 @@ static bool ravb_can_tx_csum_gbeth(struct sk_buff *skb)
>
> switch (ip->protocol) {
> case IPPROTO_TCP:
> - break;
> case IPPROTO_UDP:
> - /* If the checksum value in the UDP header field is 0, TOE does
> - * not calculate checksum for UDP part of this frame as it is
> - * optional function as per standards.
> - */
> - if (udp_hdr(skb)->check == 0)
> - return false;
> - break;
> + return true;
> +
No need for an empty line here, it's not used elsewhere in the *switch*
statements...
> default:
> return false;
> }
[...]
MBR, Sergey
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