Re: [rdma-core patch] srp_daemon: print maximum initiator to target IU size

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On Tue, Sep 17, 2019 at 10:19:37AM -0700, Bart Van Assche wrote:
> On 9/15/19 6:36 PM, Honggang LI wrote:
> > From: Honggang Li <honli@xxxxxxxxxx>
> > 
> > The 'Send Message Size' field of IOControllerProfile attributes
> > contains the maximum initiator to target IU size.
> > 
> > When there is something wrong with SRP login to a third party
> > SRP target, whose ib_srpt parameters can't be collected with
> > ordinary method, dump the 'Send Message Size' may help us to
> > diagnose the problem.
> > 
> > Signed-off-by: Honggang Li <honli@xxxxxxxxxx>
> > ---
> >   srp_daemon/srp_daemon.c | 2 ++
> >   1 file changed, 2 insertions(+)
> > 
> > diff --git a/srp_daemon/srp_daemon.c b/srp_daemon/srp_daemon.c
> > index 337b21c7..90533c77 100644
> > --- a/srp_daemon/srp_daemon.c
> > +++ b/srp_daemon/srp_daemon.c
> > @@ -1022,6 +1022,8 @@ static int do_port(struct resources *res, uint16_t pkey, uint16_t dlid,
> >   			pr_human("        vendor ID: %06x\n", be32toh(target->ioc_prof.vendor_id) >> 8);
> >   			pr_human("        device ID: %06x\n", be32toh(target->ioc_prof.device_id));
> >   			pr_human("        IO class : %04hx\n", be16toh(target->ioc_prof.io_class));
> > +			pr_human("        Maximum initiator to target IU size: %d\n",
> > +				 be32toh(target->ioc_prof.send_size));
> >   			pr_human("        ID:        %s\n", target->ioc_prof.id);
> >   			pr_human("        service entries: %d\n", target->ioc_prof.service_entries);
> 
> How about using the terminology from the InfiniBand Architecture

As this is srp specific, so I suggest to use the terminology from
srp specification 'srp2r06'.

Table B.7 — IOControllerProfile attributes for SRP target ports
----------------------------------------------------------------
| Field            | SRP requirement                           |
----------------------------------------------------------------
|(skip many lines).....                                        |
----------------------------------------------------------------
|Send Message Size |MAXIMUM INITIATOR TO TARGET IU LENGTH      |
----------------------------------------------------------------

> Specification? This is what I found in release 1.3, table 306:
> 
> "Maximum size of Send Messages in bytes"
> 
> Thanks,
> 
> Bart.



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