netdev - Re: [PATCH net] bnx2x: fix TCP offload for tunneling ipv4 over ipv6

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Message-ID: <51AC7DB3.70908@cogentembedded.com>
Date:	Mon, 03 Jun 2013 15:27:47 +0400
From:	Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
To:	Dmitry Kravkov <dmitry@...adcom.com>
CC:	davem@...emloft.net, netdev@...r.kernel.org,
	Ariel Elior <ariele@...adcom.com>,
	Eilon Greenstein <eilong@...adcom.com>
Subject: Re: [PATCH net] bnx2x: fix TCP offload for tunneling ipv4 over ipv6

Hello.

On 03-06-2013 13:28, Dmitry Kravkov wrote:

> FW was initialized with data from wrong header, this caused TSO packets
> have wrong IP csum.

> Signed-off-by: Dmitry Kravkov <dmitry@...adcom.com>
> Signed-off-by: Ariel Elior <ariele@...adcom.com>
> Signed-off-by: Eilon Greenstein <eilong@...adcom.com>
> ---
>   drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c | 13 ++++++-------
>   1 file changed, 6 insertions(+), 7 deletions(-)

> diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c
> index c80f1d2..37c1495 100644
> --- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c
> +++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c
> @@ -3198,11 +3198,11 @@ static u32 bnx2x_xmit_type(struct bnx2x *bp, struct sk_buff *skb)
>   		rc |= XMIT_CSUM_TCP;
>
>   	if (skb_is_gso_v6(skb)) {
> -		rc |= (XMIT_GSO_V6 | XMIT_CSUM_TCP | XMIT_CSUM_V6);
> +		rc |= (XMIT_GSO_V6 | XMIT_CSUM_TCP);

   Maybe it's time to drop the useless ()?

>   		if (rc & XMIT_CSUM_ENC)
>   			rc |= XMIT_GSO_ENC_V6;
>   	} else if (skb_is_gso(skb)) {
> -		rc |= (XMIT_GSO_V4 | XMIT_CSUM_V4 | XMIT_CSUM_TCP);
> +		rc |= (XMIT_GSO_V4 | XMIT_CSUM_TCP);

    Oh, here as well...

WBR, Sergei

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