Re: [PATCH 2/2] IB/hfi1: Do not warn on lid conversions for OPA

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On Wed, Nov 29, 2017 at 07:59:49AM -0500, Mike Marciniszyn wrote:
> From: Don Hiatt <don.hiatt@xxxxxxxxx>
> 
> Upstream commit 4988be5813ff2afdc0d8bfa315ef34a577d3efbf.
> 
> On OPA devices opa_local_smp_check will receive 32Bit LIDs when the LID
> is Extended. In such cases, it is okay to lose the upper 16 bits of the
> LID as this information is obtained elsewhere. Do not issue a warning
> when calling ib_lid_cpu16() in this case by masking out the upper 16Bits.

The concept for the 32 bit lids was to keep it 32 bit inside the
kernel, ingress_key_table_fail puts the lid into
err_info_constraint.slid which is already 32 bits, so this cannot be
the right place for this.

These truncations should only appear at the uapi boundary.

Jason



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