[ofw] SRP miniport will not start with gen2 SRP Target
Robert H.B. Netzer
rob at systemfabricworks.com
Wed Nov 28 11:48:47 PST 2007
Thanks for pointing that out -- I have a recent OFED build but an srpt
source tree from May 11. I see in the srpt git logs a commit from Oct 30
that claims to fix the issue. I just re-built with this latest srpt source
and it works!
> -----Original Message-----
> From: Leonid Keller [mailto:leonid at mellanox.co.il]
> Sent: Wednesday, November 28, 2007 1:11 PM
> To: Fab Tillier; rob at systemfabricworks.com; ofw at lists.openfabrics.org
> Subject: RE: [ofw] SRP miniport will not start with gen2 SRP Target
>
> Yes, it does not solve the problem, we've checked it.
> The flaws were at the target side.
> They had been fixed, but I'm not sure about the comitting of the fixes.
> Rob, did you try the last version of OFED ?
>
> > -----Original Message-----
> > From: ofw-bounces at lists.openfabrics.org
> > [mailto:ofw-bounces at lists.openfabrics.org] On Behalf Of Fab Tillier
> > Sent: Wednesday, November 28, 2007 7:16 PM
> > To: rob at systemfabricworks.com; ofw at lists.openfabrics.org
> > Subject: RE: [ofw] SRP miniport will not start with gen2 SRP Target
> >
> > If the SRP initiator gets to pick the 'IDENTIFIER EXTENSION'
> > field, it should be able to use whatever value it feels is
> > appropriate to 'ensure that all SRP initiator port
> > identifiers are unique'. What is wrong with using the
> > extension ID - does this violate the spec somehow?
> >
> > I'd be weary of making changes to the initiator based on a
> > flaw in the target. The SRP initiator in Windows works
> > successfully with other SRP targets, which would seem to
> > indicate a target-side issue with the Mellanox SRPT implementation.
> >
> > -Fab
> >
> > -----Original Message-----
> > From: ofw-bounces at lists.openfabrics.org
> > [mailto:ofw-bounces at lists.openfabrics.org] On Behalf Of
> > Robert H.B. Netzer
> > Sent: Wednesday, November 28, 2007 5:06 AM
> > To: ofw at lists.openfabrics.org
> > Subject: RE: [ofw] SRP miniport will not start with gen2 SRP Target
> >
> > Does anyone know if this inter-operability problem was ever
> > debugged? The WinOF 1.0.1 release seems to still suffer from it.
> >
> > If not, would anyone with knowledge of the SRP initiator or
> > target be willing to offer me some tips on what to look for
> > if I were to attempt to debug it in the next couple of weeks?
> >
> > Rob Netzer
> > System Fabric Works, Inc.
> >
> > > -----Original Message-----
> > > From: On Behalf Of ssufficool at rov.sbcounty.gov
> > (Sufficool, Stanley)
> > > Sent: Monday, August 13, 2007 1:36 PM
> > > Subject: [ofw] SRP miniport will not start with gen2 SRP Target
> > >
> > > Looks like WinIB srp initiator is sending
> > [TargetGUID]:[InitiatorGUID]
> > > in the request init_port_id struct instead of
> > > [InitiatorExt]:[InitiatorGUID]. I beleive this is causing
> > the Mellanox
> > > referenced SRPT to produce an invalid nexus and break the
> > connection.
> > >
> > > These are the logs from the Mellanox IB_SRPT kernel module
> > for Win64 &
> > > Linux x64 initiator scenarios.
> > >
> > > --- Windows Inititator (WinIB Gen1 SRP)
> > > ===================================
> > > ib_srpt: Host i_port_id=0x44d00cffff4b1a00:0xf4f700ffffbb1900 login
> > > with t_port_id=0x44d00cffff4b1a00:0x44d00cffff4b1a00 it_iu_len=340
> > >
> > > Result: no disk in disk manager
> > > ===================================
> > >
> > > --- Linux Initiator (OFED Gen2 SRP) -
> > > ===================================
> > > ib_srpt: Host i_port_id=0x0:0x45d00cffff4b1a00 login with
> > > t_port_id=0x44d00cffff4b1a00:0x44d00cffff4b1a00 it_iu_len=260
> > >
> > > Result, successful connection and /dev/sda is created.
> > > ===================================
> > >
> > > srp_connection.c
> > > ====================
> > > Is there a reason to set the init_port_id.field1 to the target port
> > > GUID? Per the SRP R16 (Pg 66), this is set to the Initiator ID
> > > extension (0x0 in above Linux scenario). "The IDENTIFIER EXTENSION
> > > field shall be chosen by the SRP initiator port to ensure
> > that all SRP
> > > initiator port identifiers are unique". Linux SRP sets this to the
> > > initiator_ext (ib_srp.c line 342)
> > >
> > > line 802 - 815
> > > switch( p_profile->io_class )
> > > {
> > > case SRP_IO_CLASS_R10:
> > > p_connection->init_port_id.field1 = ca_guid;
> > > p_connection->init_port_id.field2 = ext_id;
> > > p_connection->targ_port_id.field1 =
> > p_profile->ioc_guid;
> > > p_connection->targ_port_id.field2 = ext_id;
> > > break;
> > >
> > > case SRP_IO_CLASS:
> > > p_connection->init_port_id.field1 = ext_id;
> > > p_connection->init_port_id.field2 = ca_guid;
> > > p_connection->targ_port_id.field1 = ext_id;
> > > p_connection->targ_port_id.field2 =
> > p_profile->ioc_guid;
> > > break;
> > >
> > > default:
> > > return IB_INVALID_PARAMETER;
> > > }
> > >
> > >
> > >
> > >
> > >
> > > ________________________________
> > > From: ofw-bounces at lists.openfabrics.org
> > > [mailto:ofw-bounces at lists.openfabrics.org] On Behalf Of Sufficool,
> > > Stanley
> > > Sent: Tuesday, August 07, 2007 10:12 AM
> > > To: ofw at lists.openfabrics.org
> > > Subject: [ofw] SRP miniport will not start with gen2 SRP Target
> > >
> > >
> > > I noted this thread from May:
> > >
> > > http://lists.openfabrics.org/pipermail/ofw/2007-May/001565.html
> > >
> > > I am having the same issue. Vu at Mellanox says it has
> > something to do
> > > with the SRP initiator not recognizing the LUNs on the target. (
> > >
> > http://lists.openfabrics.org/pipermail/general/2007-July/037986.html )
> > >
> > > Is there anything being done with this? The linux
> > initiators are said
> > > to work with this target.
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