Re: [Linux-ATM-General] Fwd: Re: [PATCH] pppoatm carrier status

[Philip P. <phi...@re...>]

  On 9/22/10 9:25 AM, Karl Hiramoto wrote:
> On 09/22/10 18:04, Philip Prindeville wrote:
>
>> Ok, that didn't crash.
>>
>> Now how is the state exposed into user-space?
>>
>>
>>
> If you do "ip link"  does it show LOWER_UP?  Then if you loose carrier
> does LOWER_UP disappear?
>
> If not, put some printk's in locations like ppp_channel_carrier_on()
> ppp_channel_carrier_off() pppoatm_dev_event() to see what's happening.

Actually, that was happening before... because I think ppp_generic marks the interface as up when negotiation completes, and down when it fails or when LCP echo times out.

No, that's not right.  I just grepped IFF_UP in drivers/net/ppp*.c and didn't get a hit (for setting it).

I'll dig a bit more for where this is happening.