Re: struct ifnet and ifaddr handling [was: Re: Making global variables of if.c MPSAFE]

[Ryota Ozaki <ozaki-r%netbsd.org@localhost>]

On Wed, Nov 26, 2014 at 5:58 PM, Masao Uebayashi <uebayasi%gmail.com@localhost> wrote:
> On Wed, Nov 26, 2014 at 5:53 PM, Ryota Ozaki <ozaki-r%netbsd.org@localhost> wrote:
>> On Wed, Nov 26, 2014 at 5:09 PM, Masao Uebayashi <uebayasi%gmail.com@localhost> wrote:
>>> I overlooked you've back out the struct callout * dynamic allocation
>>> part.  Can you make it use kmem as I showed?
>>
>> Hmm, I'll do so, although I don't yet understand why the pointer version
>> is better than the embedded version.
>
> You told that the pseudo interfaces have no watchdog/slowtimo.
> Routers might have thousands of pseudo interfaces.  I'd save 10
> pointers there.  struct ifnet is already too big.

Sure. I'm persuaded :)

Thanks,
  ozaki-r

>
> But it's also true that callout_t is designed to be opaque to be
> embedded in other structs.