EM and TSO

[Sam Leffler]

Jack Vogel wrote:
> I introduced a change yesterday that limited TSO to PCI Express
> adapters, I did this more for avoidance rather than a bug fix, and
> I'm not 100% sure its the right thing, so I thought I would poll
> everyone, do you have a PCI-X adapter and are using TSO without
> problems and wish to keep the support in?
> 
> If no one is then I'll just leave it as is.

It might be better to enable it by default on pci-e adapters and require
manual enable on other adapters that are capable but may not function
correctly.

	Sam