Re: linux-next: origin tree build failure

Roland Dreier
2008-12-29T16:14:12Z

> After another investigation of this problem, I think that proposed
> solution is #ifdef as good for a first stage. IPv6 support is mandatory
> when we are talking about running linux in some organization. But, of
> course, the way how it implemented in IB stack should be changed. So on
> the second stage, I'd like drop out these "defines" and at the time of
> module initialization obtain addresses of IPv6 functions and in the case
> if they are present at the runtime, call them. It should be nice
> solution for RMDA_CM and IPoIB modules.

I don't think this second stage sounds like a good idea. Suppose
someone loads the RDMA CM first, so it doesn't find the ipv6 functions,
and then later loads and configures ipv6. You'll end up in a situation
where trying to make an IPv6 connection fails spuriously. (And just the
ugliness of looking up function pointers isn't very nice either)

- R.