netdev - Re: [PATCH net-next v2 2/8] ravb: Add skb_sz to struct ravb_hw

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Date:   Mon, 2 Aug 2021 23:54:54 +0300
From:   Sergei Shtylyov <sergei.shtylyov@...il.com>
To:     Biju Das <biju.das.jz@...renesas.com>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>
Cc:     Geert Uytterhoeven <geert+renesas@...der.be>,
        Sergey Shtylyov <s.shtylyov@...russia.ru>,
        Adam Ford <aford173@...il.com>, Andrew Lunn <andrew@...n.ch>,
        Yuusuke Ashizuka <ashiduka@...itsu.com>,
        Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>,
        netdev@...r.kernel.org, linux-renesas-soc@...r.kernel.org,
        Chris Paterson <Chris.Paterson2@...esas.com>,
        Biju Das <biju.das@...renesas.com>,
        Prabhakar Mahadev Lad <prabhakar.mahadev-lad.rj@...renesas.com>
Subject: Re: [PATCH net-next v2 2/8] ravb: Add skb_sz to struct ravb_hw_info

On 8/2/21 1:26 PM, Biju Das wrote:

> The maximum descriptor size that can be specified on the reception side for
> R-Car is 2048 bytes, whereas for RZ/G2L it is 8096.
> 
> Add the skb_size variable to struct ravb_hw_info for allocating different
> skb buffer sizes for R-Car and RZ/G2L using the netdev_alloc_skb function.
> 
> Signed-off-by: Biju Das <biju.das.jz@...renesas.com>
> Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
> ---
> v2:
>  * Incorporated Andrew and Sergei's review comments for making it smaller patch
>    and provided detailed description.
> ---
>  drivers/net/ethernet/renesas/ravb.h      |  1 +
>  drivers/net/ethernet/renesas/ravb_main.c | 10 ++++++----
>  2 files changed, 7 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/net/ethernet/renesas/ravb.h b/drivers/net/ethernet/renesas/ravb.h
> index cfb972c05b34..16d1711a0731 100644
> --- a/drivers/net/ethernet/renesas/ravb.h
> +++ b/drivers/net/ethernet/renesas/ravb.h
> @@ -991,6 +991,7 @@ enum ravb_chip_id {
>  struct ravb_hw_info {
>  	enum ravb_chip_id chip_id;
>  	int num_tx_desc;
> +	size_t skb_sz;

   Bad naming -- refers to software ISO hatdware, I suggest max_rx_len or s/th of that sort.

[...]

MBR, Sergei