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

[Bryan O'Sullivan]

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