linux-kernel - Re: [PATCH V2] net: mhi : Add support to enable ethernet interface

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Message-ID: <350d577a-f0b3-1f20-9c35-356355a9aa8e@quicinc.com>
Date:   Wed, 19 Jul 2023 16:08:37 +0530
From:   Vivek Pernamitta <quic_vpernami@...cinc.com>
To:     Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
CC:     <mhi@...ts.linux.dev>, <mrana@...cinc.com>,
        <quic_qianyu@...cinc.com>, <quic_vbadigan@...cinc.com>,
        <quic_krichai@...cinc.com>, <quic_skananth@...cinc.com>,
        <linux-arm-msm@...r.kernel.org>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        "Jakub Kicinski" <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        "open list:NETWORKING DRIVERS" <netdev@...r.kernel.org>,
        open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH V2] net: mhi : Add support to enable ethernet interface


Currently MHI NET driver does not support Ethernet interface,

we are adding Ethernet interface support to MHI NET driver, so new 
client can be configured to be Ethernet type over MHI by setting 
"mhi_device_info.ethernet_if = true"

currently we are not changing mhi_swip0/mhi_hwip0 to Ethernet. we are 
adding an provision to configure mhi client as  Ethernet type.


On 7/18/2023 6:13 PM, Manivannan Sadhasivam wrote:
> On Tue, Jul 18, 2023 at 11:45:28AM +0530, Vivek Pernamitta wrote:
>> Add support to enable ethernet interface for MHI SWIP channels.
>>
> Please add more info in the commit message i.e., why this interface is added and
> how it is going to benefit the users etc..
>
> Since you are modifying the existing mhi_swip interface, this isn't an ABI
> change?
>
>> Signed-off-by: Vivek Pernamitta <quic_vpernami@...cinc.com>
>> Reviewed-by: Daniele Palmas <dnlplm@...il.com>
>> Reviewed-by: Simon Horman <simon.horman@...igine.com>
>> ---
>>
>> changes since v1:
>> 	- Moved to net-next from linux-next	
>> 	- moved to eth_hw_addr_random() to assign Ethernet MAC address
>> 	  from eth_random_addr()
>> ---
>>   drivers/net/mhi_net.c | 53 ++++++++++++++++++++++++++++++++++++++-------------
>>   1 file changed, 40 insertions(+), 13 deletions(-)
>>
>> diff --git a/drivers/net/mhi_net.c b/drivers/net/mhi_net.c
>> index 3d322ac..5bb8d99 100644
>> --- a/drivers/net/mhi_net.c
>> +++ b/drivers/net/mhi_net.c
> [...]
>
>> @@ -380,10 +405,12 @@ static void mhi_net_remove(struct mhi_device *mhi_dev)
>>   
>>   static const struct mhi_device_info mhi_hwip0 = {
>>   	.netname = "mhi_hwip%d",
>> +	.ethernet_if = false,
>>   };
>>   
>>   static const struct mhi_device_info mhi_swip0 = {
>>   	.netname = "mhi_swip%d",
>> +	.ethernet_if = false,
> false?
yes ,it is false as by default mhi_swip/mhi_hwip interface will be 
normal net device.
>
> - Mani
>
>>   };
>>   
>>   static const struct mhi_device_id mhi_net_id_table[] = {
>> -- 
>> 2.7.4
>>