netdev - Re: [PATCH net-next] be2net: don't report EVB for older chipsets when SR-IOV is disabled

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Date:	Thu, 11 Feb 2016 12:38:15 +0100
From:	Ivan Vecera <ivecera@...hat.com>
To:	Sathya Perla <sathya.perla@...adcom.com>
Cc:	netdev@...r.kernel.org, Ajit Khaparde <ajit.khaparde@...adcom.com>,
	Padmanabh Ratnakar <padmanabh.ratnakar@...adcom.com>,
	Sriharsha Basavapatna <sriharsha.basavapatna@...adcom.com>,
	Somnath Kotur <somnath.kotur@...adcom.com>
Subject: Re: [PATCH net-next] be2net: don't report EVB for older chipsets when
 SR-IOV is disabled

On 11.2.2016 10:56, Sathya Perla wrote:
> On Wed, Feb 10, 2016 at 1:13 PM, Ivan Vecera <ivecera@...hat.com> wrote:
>>
>> The EVB (virtual bridge) functionality should be disabled on older BE3
>> and Lancer chips if SR-IOV is disabled in the NIC's BIOS. This setting
>> is identified by the zero value of total VFs reported by the card.
>> The GET_HSW_CONFIG command cannot be used as it is not supported > by these older chipset's FW.
>>
> ..
>> ---
>>   drivers/net/ethernet/emulex/benet/be_main.c | 2 ++
>>   1 file changed, 2 insertions(+)
>>
>> diff --git a/drivers/net/ethernet/emulex/benet/be_main.c b/drivers/net/ethernet/emulex/benet/be_main.c
>> index 9c1fc9d..886fe95 100644
>> --- a/drivers/net/ethernet/emulex/benet/be_main.c
>> +++ b/drivers/net/ethernet/emulex/benet/be_main.c
>> @@ -4588,6 +4588,8 @@ static int be_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
>>
>>          /* BE and Lancer chips support VEB mode only */
>>          if (BEx_chip(adapter) || lancer_chip(adapter)) {
>> +               if (!pci_sriov_get_totalvfs(adapter->pdev))
>> +                       return 0;
>
> Ivan, could you add a one line comment above this check that says "On
> BE3/Lancer the VEB is disabled in non-SRIOV profiles". This is to
> differentiate this behavior from Skyhawk, where the VEB may be enabled
> even in non-SRIOV profiles, like nPAR...
>
> thanks,
> -Sathya
>
Sure Sathya, will send v2.

Ivan