[ofa-general] Re: [openib-general] [RFC] [PATCH v2] IB/ipoib: Add bonding support to IPoIB

[Moni Shoua]

Michael S. Tsirkin wrote:
>>>> +			if (ipoib_at_exit)
>>>> +				nn->neighbour->parms->neigh_destructor = NULL;
>>> Is it safe to do this without locking?
>>> Could the destructor be in progress when we do this?
>> I think you're right. Maybe I need to attack the issue in a different way.
>> I need to do some rethinking.
> 
> The basic problem seems to be that bonding code is taking a pointer
> into the module (neighbour setup) without taking reference on
> the module.
> 
I tend to agree but what is the way to do that? 
How can I prevent ib_ipoib from unloading if bonding is loaded?

I still have to be able to unregister net_devices (for hotplug)
and I don't want to do something that will force other network devices (e.g. Ethernet)to change.

Is there a way to take reference count of a module in 2.6 kernels?