netdev - Re: [PATCH net-next v4 09/12] net: ethernet: oa_tc6: implement receive path to receive rx ethernet frames

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Message-ID: <b82a3006-05cb-43a3-bbe1-4f2f81113bab@microchip.com>
Date: Mon, 29 Apr 2024 08:32:31 +0000
From: <Parthiban.Veerasooran@...rochip.com>
To: <ramon.nordin.rodriguez@...roamp.se>
CC: <davem@...emloft.net>, <edumazet@...gle.com>, <kuba@...nel.org>,
	<pabeni@...hat.com>, <horms@...nel.org>, <saeedm@...dia.com>,
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	<benjamin.bigler@...nformulastudent.ch>
Subject: Re: [PATCH net-next v4 09/12] net: ethernet: oa_tc6: implement
 receive path to receive rx ethernet frames

Hi Ramon,

On 28/04/24 1:32 am, Ramón Nordin Rodriguez wrote:
> EXTERNAL EMAIL: Do not click links or open attachments unless you know the content is safe
> 
> Could xfer.rx_buf for the data path point to the currently allocacted socket buff
>          struct spi_transfer xfer = { 0 };
>          struct spi_message msg;
> 
>          if (header_type == OA_TC6_DATA_HEADER) {
>                  xfer.tx_buf = tc6->spi_data_tx_buf;
>                  xfer.rx_buf = tc6->spi_data_rx_buf;
>          } else {
>                  xfer.tx_buf = tc6->spi_ctrl_tx_buf;
>                  xfer.rx_buf = tc6->spi_ctrl_rx_buf;
>          }
>          xfer.len = length;
> 
> To avoid an additional copy here?
I think, this can be done later as part of optimization/improvements. 
Let's keep it simple and optimize it later.

Best regards,
Parthiban V
> 
>> +static void oa_tc6_update_rx_skb(struct oa_tc6 *tc6, u8 *payload, u8 length)
>> +{
>> +     memcpy(skb_put(tc6->rx_skb, length), payload, length);
>> +}
>>
> 
> R
>