Re: [PATCH for-next 5/9] IB/core, rdmavt, hfi1: Send OPA cap_mask3 in trap

["Vishwanathapura, Niranjana" <niranjana.vishwanathapura-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>]

On Wed, May 31, 2017 at 07:32:35AM +0300, Leon Romanovsky wrote:
>On Tue, May 30, 2017 at 11:32:22AM -0700, Henry, Michael N wrote:
>> On 5/29/2017 9:14 AM, Leon Romanovsky wrote:
>> > On Fri, May 26, 2017 at 05:35:37AM -0700, Dennis Dalessandro wrote:
>> > > From: Michael N. Henry <michael.n.henry-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
>> > >
>> > > Provide the ability for IB clients to modify the OPA specific
>> > > capability mask and include this mask in the subsequent trap data.
>> > >
>> > > diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
>> > > index 785e927..6c4f6da 100644
>> > > --- a/include/rdma/ib_verbs.h
>> > > +++ b/include/rdma/ib_verbs.h
>> > > @@ -576,7 +576,8 @@ struct ib_device_modify {
>> > >   enum ib_port_modify_flags {
>> > >   	IB_PORT_SHUTDOWN		= 1,
>> > >   	IB_PORT_INIT_TYPE		= (1<<2),
>> > > -	IB_PORT_RESET_QKEY_CNTR		= (1<<3)
>> > > +	IB_PORT_RESET_QKEY_CNTR		= (1<<3),
>> > > +	IB_PORT_OPA_MASK_CHG		= (1<<4)
>> > How will this flag be set?
>> >
>> This flag can be set as the port_modify_mask when calling ib_modify_port(..)
>
>My question is more general. I'm as a representative of these "IB
>clients" would like to know when and why should I use this flag.
>

Hi,
We have an OPA VNIC use case (patch coming up) to set/clear OPA capmask as 
below.

pm.set/clear_port_cap_mask = OPA_CAP_MASK3_IsEthOnFabricSupported;
ib_modify_port(hca, port, IB_PORT_OPA_MASK_CHG, &pm);

This patch support such usecase and we want to get comments early (if any) for 
that, hence this patch.

Niranjana

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