[openib-general] Different low level drivers returns different return values incase of an error

[Dotan Barak]

Bryan O'Sullivan wrote:
> Dotan Barak wrote:
>
>> I think that there should be 2 modes to the drivers:
>> mode 1 (release mode): return "standard" errno values
>> mode 2 (debug mode) : return "IB oriented" values
>
> No way, that's a guaranteed route to broken code.  If you want to 
> propagate IB-specific error values, define an ib_errno variable, make 
> it use the same TLS mechanism as errno, give it well-defined values, 
> and make it part of the ABI.  Some mechanism that you can't rely on 
> unless you know you need to tweak it is worse than useless.
>
>     <b
This was an example for a possible solution on how to give the user more 
info when there is a failure
(I'm sure that we can come out with a better solution that will be 
accepted by everyone ..)

Dotan