Re: [PATCH 0/2 RESEND] IB/Verbs: Use helpers to refine the checking on transport and link layer

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On Thu, Mar 26, 2015 at 05:58:20PM +0100, Michael Wang wrote:

> The questions is just wondering how the transition method could be, but
> if we have to do the changes for vendor, that sounds like a tough job...

I would see changing how the information is represented in the struct
as a follow on issue. The first patch should go through and replace
all direct access to the link layer/transport/etc with an
appropriately narrow is_XX() test like Doug was suggesting.

That means looking at each code site and determining what it needs,
making a is_XX for it and a kdoc describing exactly what is needed for
the test to return true.

The follow on patch can then rework the is_XX and drop the link
layer/transport stuff..

Some ideas for is_XX:
  IB compatible SA
  QP0 SMP mechanism
  IB SMP format
  OPA SMP format
  QP1 GMP mechanism
  IB compatible CM
  GID addressing
  IP/IPv6 addressing
  Ethernet VLAN
  ...

Jason
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