netdev - Re: [PATCH v5 net-next 02/18] ionic: Add hardware init and device commands

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Date:   Tue, 27 Aug 2019 20:26:59 -0700
From:   Shannon Nelson <snelson@...sando.io>
To:     Jakub Kicinski <jakub.kicinski@...ronome.com>
Cc:     netdev@...r.kernel.org, davem@...emloft.net
Subject: Re: [PATCH v5 net-next 02/18] ionic: Add hardware init and device
 commands

On 8/27/19 8:16 PM, Jakub Kicinski wrote:
> On Tue, 27 Aug 2019 14:22:55 -0700, Shannon Nelson wrote:
>>>> diff --git a/drivers/net/ethernet/pensando/ionic/ionic_devlink.c b/drivers/net/ethernet/pensando/ionic/ionic_devlink.c
>>>> index e24ef6971cd5..1ca1e33cca04 100644
>>>> --- a/drivers/net/ethernet/pensando/ionic/ionic_devlink.c
>>>> +++ b/drivers/net/ethernet/pensando/ionic/ionic_devlink.c
>>>> @@ -11,8 +11,28 @@
>>>>    static int ionic_dl_info_get(struct devlink *dl, struct devlink_info_req *req,
>>>>    			     struct netlink_ext_ack *extack)
>>>>    {
>>>> +	struct ionic *ionic = devlink_priv(dl);
>>>> +	struct ionic_dev *idev = &ionic->idev;
>>>> +	char buf[16];
>>>> +
>>>>    	devlink_info_driver_name_put(req, IONIC_DRV_NAME);
>>>>    
>>>> +	devlink_info_version_running_put(req,
>>>> +					 DEVLINK_INFO_VERSION_GENERIC_FW_MGMT,
>>>> +					 idev->dev_info.fw_version);
>>> Are you sure this is not the FW that controls the data path?
>> There is only one FW rev to report, and this covers mgmt and data.
> Can you add a key for that? Cause this one clearly says management..

Perhaps something like this?

/* Overall FW version */
#define DEVLINK_INFO_VERSION_GENERIC_FW    "fw"


>> Since I don't have any board info available at this point, shall I use
>> my own "asic.id" and "asic.rev" strings, or in this patch shall I add
>> something like this to devlink.h and use them here:
>>
>> /* Part number, identifier of asic design */
>> #define DEVLINK_INFO_VERSION_GENERIC_ASIC_ID    "asic.id"
>> /* Revision of asic design */
>> #define DEVLINK_INFO_VERSION_GENERIC_ASIC_REV    "asic.rev"
> Yes, please add these to the generic items and document appropriately.

Sure.  Is there any place besides 
Documentation/networking/devlink-info-versions.rst?

sln