Re: [RFC PATCH 3/5] IB/core: Convert cap_ib_mad to core_cap_flags bit mask

["ira.weiny" <ira.weiny-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>]

On Mon, May 04, 2015 at 12:46:10PM -0600, Jason Gunthorpe wrote:
> On Mon, May 04, 2015 at 02:14:57AM -0400, ira.weiny-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org wrote:
> 
> > Use the new Core Capability bits instead of inferring this support from the
> > protocol.
> 
> Does this really need to be a seperate patch? At least for the
> core_cap_flags parts it makes no sense to change those lines twice

Only to show the progression and for me to test as I went.  I think a squash is
good.  I just was taking my testing slowly to make sure I did not do something
stupid...  ;-)

> 
> > -	props->core_cap_flags = RDMA_CORE_CAP_PROT_IB;
> > +	props->core_cap_flags = RDMA_CORE_CAP_PROT_IB | RDMA_CORE_CAP_IB_MAD;
> 
> Hurm,
> 
> Maybe add some macros to help this out, document the standard that
> the port implements:
> 
> #define RDMA_CORE_PORT_IB_IBA_v1_2 (RDMA_CORE_CAP_PROT_IB | RDMA_CORE_CAP_IB_MAD)
> #define RDMA_CORE_PORT_ROCEE_IBA_v1_2_A15 ..
> #define RDMA_CORE_PORT_ROCEE_IBA_v1_3_A16 ..

Good idea.

> 
> >  static inline int cap_ib_mad(struct ib_device *device, u8 port_num)
> >  {
> > -	return rdma_ib_or_iboe(device, port_num);
> > +	return !!(device->core_cap_flags[port_num] & RDMA_CORE_CAP_IB_MAD);
> 
> 
> 'bool' is OK in the kernel, just use that instead of !! - in fact all of
> thse cap returns should return bool. Michael should fix that in his
> series too.

Michael?

Ira

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