Any tips on where per-packet antenna selection could be pushed?

[Zach Sherin]

That's what I thought. Thanks for confirming, and thanks again for
your time and help!

Have a good one,
Zach

On Mon, Jun 6, 2016 at 2:57 PM, Ben Greear <greearb at candelatech.com> wrote:
> On 06/06/2016 11:48 AM, Zach Sherin wrote:
>>
>> Interesting. Could I ask if there's somewhere I should start digging?
>> If it's not obvious I'm a driver/kernel newbie, but I'm happy to
>> learn. Should I start by going through ath10k's documentation/code
>> until I find the relevant bits?
>
>
> Unfortunately, without firmware source, you have probably no chance
> to do this.  And, you also probably have about no chance of getting
> firmware source.
>
> Thanks,
> Ben
>
>
>>
>> Thanks,
>> Zach
>>
>>
>> On Mon, Jun 6, 2016 at 2:42 PM, Adrian Chadd <adrian.chadd at gmail.com>
>> wrote:
>>>
>>> I bet the ruckus mode shift stuff is in the ath10k hardware and is
>>> configurable per TX descriptor.
>>>
>>> a
>>>
>>> On Jun 6, 2016 11:03 AM, "Ben Greear" <greearb at candelatech.com> wrote:
>>>>
>>>>
>>>> On 06/06/2016 10:59 AM, Zach Sherin wrote:
>>>>>
>>>>>
>>>>> I was aiming to run this off a serial interface on the general board,
>>>>> not on the ath10k NIC. I have a consumer QCA9880 PCI board in an
>>>>> Archer C7 router. It would be awesome if I could steal a GPIO or
>>>>> something from the atheros chip to output, but I was assuming I
>>>>> couldn't. The main reason I was looking at the ath10k driver was to
>>>>> get as close to when the packets are transmitted as possible, to leave
>>>>> as little room for error in the switching as possible.
>>>>>
>>>>> However, it's  possible that I'm hoping for too much there. I'd be
>>>>> interested to hear your thoughts on it. If I can't pull it off, I'll
>>>>> move to an approach outside ath10k.
>>>>
>>>>
>>>>
>>>> The driver just sends pkts to the firmware, it is the firmware that
>>>> knows when a pkt is to be transmitted, so I think you would have to have
>>>> some
>>>> hooks low in the firmware tx logic to do what you want.  And you would
>>>> need some
>>>> hardware output from the NIC.
>>>>
>>>> I am guessing it would require quite a bit of changes to the firmware,
>>>> possibly very tricky/hacky ones, and hardware output on your NIC.
>>>>
>>>> Thanks,
>>>> Ben
>>>>
>>>> --
>>>> Ben Greear <greearb at candelatech.com>
>>>> Candela Technologies Inc  http://www.candelatech.com
>>>>
>>>>
>>>> _______________________________________________
>>>> ath10k mailing list
>>>> ath10k at lists.infradead.org
>>>> http://lists.infradead.org/mailman/listinfo/ath10k
>>
>>
>
>
> --
> Ben Greear <greearb at candelatech.com>
> Candela Technologies Inc  http://www.candelatech.com
>