Re: [beagleboard] Why two Ethernet over USB interfaces, usb0 and usb1?

2017-09-25 Thread Tarmo Kuuse 
On Sunday, 24 September 2017 21:19:02 UTC+3, qie...@gmail.com wrote:
>
> Okay, this answers my  question in another thread.  So now how do I 
> disable one or the other?
>
> On Thursday, August 31, 2017 at 4:11:49 PM UTC+2, RobertCNelson wrote:
>>
>> On Thu, Aug 31, 2017 at 9:07 AM, Tarmo Kuuse  wrote: 
>> > 
>> > Hi! 
>> > 
>> > I've been reading the am335x_evm.sh & friends for a while and don't get 
>> it. 
>> > Why are there two separate Ethernet over USB interfaces - eth0 and eth1 
>> - 
>> > doing the same exact thing? They both show up when I connect a BB to my 
>> > Debian PC. 
>> > 
>> > Having no experience with gadget and libcomposite, I'd guess that RNDIS 
>> and 
>> > CDC ECM are both required simultaneously to somehow support 
>> > Windows/Mac/Linux users out of the box? 
>>
>> So this is Windows and Apple's fault.. 
>>
>> Windows = CDC ECM = needs signed driver.. 
>> Apple = RNDIS = needs signed driver... 
>>
>> Windows will use the RNDIS with a built-in driver, thus user doesn't 
>> have to install anything... 
>> Apple will use the CDC ECM with a built-in driver, thus user doesn't 
>> have to install anything... 
>>
>> So in linux, we end with two interfaces, because Windows and Apple 
>> don't have a unified built-in driver... 
>>
>> Regards, 
>>
>> -- 
>> Robert Nelson 
>> https://rcn-ee.com/ 
>>
>
I'd go for hacking out either the rndis or ecm config from usb-gadget setup 
in am335x_evm.sh (see Robert's last post with highlighted lines). 

--
Kind regards,
Tarmo Kuuse

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Re: [beagleboard] Why two Ethernet over USB interfaces, usb0 and usb1?

2017-09-24 Thread qiet72 
Okay, this answers my  question in another thread.  So now how do I disable 
one or the other?

On Thursday, August 31, 2017 at 4:11:49 PM UTC+2, RobertCNelson wrote:
>
> On Thu, Aug 31, 2017 at 9:07 AM, Tarmo Kuuse  > wrote: 
> > 
> > Hi! 
> > 
> > I've been reading the am335x_evm.sh & friends for a while and don't get 
> it. 
> > Why are there two separate Ethernet over USB interfaces - eth0 and eth1 
> - 
> > doing the same exact thing? They both show up when I connect a BB to my 
> > Debian PC. 
> > 
> > Having no experience with gadget and libcomposite, I'd guess that RNDIS 
> and 
> > CDC ECM are both required simultaneously to somehow support 
> > Windows/Mac/Linux users out of the box? 
>
> So this is Windows and Apple's fault.. 
>
> Windows = CDC ECM = needs signed driver.. 
> Apple = RNDIS = needs signed driver... 
>
> Windows will use the RNDIS with a built-in driver, thus user doesn't 
> have to install anything... 
> Apple will use the CDC ECM with a built-in driver, thus user doesn't 
> have to install anything... 
>
> So in linux, we end with two interfaces, because Windows and Apple 
> don't have a unified built-in driver... 
>
> Regards, 
>
> -- 
> Robert Nelson 
> https://rcn-ee.com/ 
>

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Re: [beagleboard] Why two Ethernet over USB interfaces, usb0 and usb1?

2017-08-31 Thread Tarmo Kuuse 
On Thursday, August 31, 2017 at 5:20:06 PM UTC+3, RobertCNelson wrote:
>
> On Thu, Aug 31, 2017 at 9:15 AM, Tarmo Kuuse  > wrote: 
> > On Thursday, August 31, 2017 at 5:11:49 PM UTC+3, RobertCNelson wrote: 
> >> 
> >> On Thu, Aug 31, 2017 at 9:07 AM, Tarmo Kuuse  
> wrote: 
> >> > I've been reading the am335x_evm.sh & friends for a while and don't 
> get 
> >> > it. 
> >> > Why are there two separate Ethernet over USB interfaces - eth0 and 
> eth1 
> >> > - 
> >> > doing the same exact thing? They both show up when I connect a BB to 
> my 
> >> > Debian PC. 
> >> > 
> >> > Having no experience with gadget and libcomposite, I'd guess that 
> RNDIS 
> >> > and 
> >> > CDC ECM are both required simultaneously to somehow support 
> >> > Windows/Mac/Linux users out of the box? 
> >> 
> >> So this is Windows and Apple's fault.. 
> >> 
> >> Windows = CDC ECM = needs signed driver.. 
> >> Apple = RNDIS = needs signed driver... 
> >> 
> >> Windows will use the RNDIS with a built-in driver, thus user doesn't 
> >> have to install anything... 
> >> Apple will use the CDC ECM with a built-in driver, thus user doesn't 
> >> have to install anything... 
> >> 
> >> So in linux, we end with two interfaces, because Windows and Apple 
> >> don't have a unified built-in driver... 
> > 
> > 
> > Fair enough, thanks for the explanation. 
> > 
> > Since the comments in "autoconfigure_usb1.sh" say it's handling CDC/ECM, 
> I 
> > assume that the other one (usb0) does RNDIS. 
>
> it's only because we enable rndis first thus it becomes usb0: 
>
>
> https://github.com/RobertCNelson/boot-scripts/blob/master/boot/am335x_evm.sh#L503-L531
>  
>
> Regards, 
>
>
> -- 
> Robert Nelson 
> https://rcn-ee.com/ 
>

Oky ... /long blank stare/ ... I think I mostly get it now. 

The sysfs hierarchy groups them both under "functions/*.usb0" which is an 
excellent red herring :)

--
Tarmo

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Re: [beagleboard] Why two Ethernet over USB interfaces, usb0 and usb1?

2017-08-31 Thread Robert Nelson 
On Thu, Aug 31, 2017 at 9:15 AM, Tarmo Kuuse  wrote:
> On Thursday, August 31, 2017 at 5:11:49 PM UTC+3, RobertCNelson wrote:
>>
>> On Thu, Aug 31, 2017 at 9:07 AM, Tarmo Kuuse  wrote:
>> > I've been reading the am335x_evm.sh & friends for a while and don't get
>> > it.
>> > Why are there two separate Ethernet over USB interfaces - eth0 and eth1
>> > -
>> > doing the same exact thing? They both show up when I connect a BB to my
>> > Debian PC.
>> >
>> > Having no experience with gadget and libcomposite, I'd guess that RNDIS
>> > and
>> > CDC ECM are both required simultaneously to somehow support
>> > Windows/Mac/Linux users out of the box?
>>
>> So this is Windows and Apple's fault..
>>
>> Windows = CDC ECM = needs signed driver..
>> Apple = RNDIS = needs signed driver...
>>
>> Windows will use the RNDIS with a built-in driver, thus user doesn't
>> have to install anything...
>> Apple will use the CDC ECM with a built-in driver, thus user doesn't
>> have to install anything...
>>
>> So in linux, we end with two interfaces, because Windows and Apple
>> don't have a unified built-in driver...
>
>
> Fair enough, thanks for the explanation.
>
> Since the comments in "autoconfigure_usb1.sh" say it's handling CDC/ECM, I
> assume that the other one (usb0) does RNDIS.

it's only because we enable rndis first thus it becomes usb0:

https://github.com/RobertCNelson/boot-scripts/blob/master/boot/am335x_evm.sh#L503-L531

Regards,


-- 
Robert Nelson
https://rcn-ee.com/

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Re: [beagleboard] Why two Ethernet over USB interfaces, usb0 and usb1?

2017-08-31 Thread Tarmo Kuuse 
On Thursday, August 31, 2017 at 5:11:49 PM UTC+3, RobertCNelson wrote:
>
> On Thu, Aug 31, 2017 at 9:07 AM, Tarmo Kuuse  > wrote: 
> > I've been reading the am335x_evm.sh & friends for a while and don't get 
> it. 
> > Why are there two separate Ethernet over USB interfaces - eth0 and eth1 
> - 
> > doing the same exact thing? They both show up when I connect a BB to my 
> > Debian PC. 
> > 
> > Having no experience with gadget and libcomposite, I'd guess that RNDIS 
> and 
> > CDC ECM are both required simultaneously to somehow support 
> > Windows/Mac/Linux users out of the box? 
>
> So this is Windows and Apple's fault.. 
>
> Windows = CDC ECM = needs signed driver.. 
> Apple = RNDIS = needs signed driver... 
>
> Windows will use the RNDIS with a built-in driver, thus user doesn't 
> have to install anything... 
> Apple will use the CDC ECM with a built-in driver, thus user doesn't 
> have to install anything... 
>
> So in linux, we end with two interfaces, because Windows and Apple 
> don't have a unified built-in driver... 
>

Fair enough, thanks for the explanation.

Since the comments in "autoconfigure_usb1.sh" say it's handling CDC/ECM, I 
assume that the other one (usb0) does RNDIS.

--
Kind regards,
Tarmo

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Re: [beagleboard] Why two Ethernet over USB interfaces, usb0 and usb1?

2017-08-31 Thread Robert Nelson 
On Thu, Aug 31, 2017 at 9:07 AM, Tarmo Kuuse  wrote:
>
> Hi!
>
> I've been reading the am335x_evm.sh & friends for a while and don't get it.
> Why are there two separate Ethernet over USB interfaces - eth0 and eth1 -
> doing the same exact thing? They both show up when I connect a BB to my
> Debian PC.
>
> Having no experience with gadget and libcomposite, I'd guess that RNDIS and
> CDC ECM are both required simultaneously to somehow support
> Windows/Mac/Linux users out of the box?

So this is Windows and Apple's fault..

Windows = CDC ECM = needs signed driver..
Apple = RNDIS = needs signed driver...

Windows will use the RNDIS with a built-in driver, thus user doesn't
have to install anything...
Apple will use the CDC ECM with a built-in driver, thus user doesn't
have to install anything...

So in linux, we end with two interfaces, because Windows and Apple
don't have a unified built-in driver...

Regards,

-- 
Robert Nelson
https://rcn-ee.com/

-- 
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[beagleboard] Why two Ethernet over USB interfaces, usb0 and usb1?

2017-08-31 Thread Tarmo Kuuse 

Hi!

I've been reading the am335x_evm.sh & friends for a while and don't get it. 
Why are there two separate Ethernet over USB interfaces - eth0 and eth1 - 
doing the same exact thing? They both show up when I connect a BB to my 
Debian PC. 

Having no experience with gadget and libcomposite, I'd guess that RNDIS and 
CDC ECM are both required simultaneously to somehow support 
Windows/Mac/Linux users out of the box?

--
Kind regards,
Tarmo

-- 
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