netdev - RE: [Intel-wired-lan] [iwl-next v2 0/6] Add RDMA support for Intel IPU E2000 in idpf

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Message-ID: <IA1PR11MB77275BF8E2885AC02204309CCB4EA@IA1PR11MB7727.namprd11.prod.outlook.com>
Date: Tue, 8 Jul 2025 20:40:09 +0000
From: "Nikolova, Tatyana E" <tatyana.e.nikolova@...el.com>
To: Paul Menzel <pmenzel@...gen.mpg.de>
CC: "intel-wired-lan@...ts.osuosl.org" <intel-wired-lan@...ts.osuosl.org>,
	"jgg@...dia.com" <jgg@...dia.com>, "leon@...nel.org" <leon@...nel.org>,
	"linux-rdma@...r.kernel.org" <linux-rdma@...r.kernel.org>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>, "kuba@...nel.org"
	<kuba@...nel.org>
Subject: RE: [Intel-wired-lan] [iwl-next v2 0/6] Add RDMA support for Intel
 IPU E2000 in idpf



> -----Original Message-----
> From: Paul Menzel <pmenzel@...gen.mpg.de>
> Sent: Friday, June 13, 2025 2:21 AM
> To: Nikolova, Tatyana E <tatyana.e.nikolova@...el.com>
> Cc: intel-wired-lan@...ts.osuosl.org; jgg@...dia.com; leon@...nel.org; linux-
> rdma@...r.kernel.org; netdev@...r.kernel.org; kuba@...nel.org
> Subject: Re: [Intel-wired-lan] [iwl-next v2 0/6] Add RDMA support for Intel IPU
> E2000 in idpf
> 
> Dear Tatyana,
> 
> 
> Thank you for this patch series.
Thank you for reviewing it.

> 
> 
> Am 12.06.25 um 23:59 schrieb Tatyana Nikolova:
> > This idpf patch series is the second part of the staged submission for
> > introducing RDMA RoCEv2 support for the IPU E2000 line of products,
> > referred to as GEN3.
> >
> > To support RDMA GEN3 devices, the idpf driver uses common definitions
> > of the IIDC interface and implements specific device functionality in
> > iidc_rdma_idpf.h.
> 
> This could be re-flowed for longer lines.
Okay.

> 
> > The IPU model can host one or more logical network endpoints called
> > vPorts per PCI function that are flexibly associated with a physical
> > port or an internal communication port.
> >
> > Other features as it pertains to GEN3 devices include:
> > * MMIO learning
> > * RDMA capability negotiation
> > * RDMA vectors discovery between idpf and control plane
> >
> > These patches are split from the submission "Add RDMA support for
> > Intel IPU E2000 (GEN3)" [1] and are based on 6.16-rc1. A shared pull
> > request for net-next and rdma-next will be sent following review.
> 
> Still mention the datasheet?
Intel has not published the E2000 datasheet at this time.

> 
> Also, it’d be great to have a paragraph on how this was tested.
Will add.

> 
> > Changelog:
> >
> > v2:
> > * Minor improvements like variable rename, logging, remove a redundant
> > variable, etc.
> > * A couple of cdev_info fixes to properly free it in error path and
> > not to dereference it before NULL check.
> >
> > Changes since split (v1) at [4]:
> > * Replace core dev_ops with exported symbols
> > * Align with new header split scheme (iidc_rdma.h common header and
> > iidc_rdma_idpf.h specific header)
> > * Align with new naming scheme (idc_rdma -> iidc_rdma)
> > * The idpf patches are submitted separately from the ice and irdma
> > changes.
> >
> > At [3]:
> > * Reduce required minimum RDMA vectors to 2
> >
> > At [2]:
> > * RDMA vector number adjustment
> > * Fix unplugging vport auxiliary device twice
> > * General cleanup and minor improvements
> >
> > [1]
> > https://lore.kernel.org/all/20240724233917.704-1-tatyana.e.nikolova@in
> > tel.com/ [2]
> > https://lore.kernel.org/all/20240824031924.421-1-tatyana.e.nikolova@in
> > tel.com/ [3]
> > https://lore.kernel.org/all/20250207194931.1569-1-tatyana.e.nikolova@i
> > ntel.com/ [4]
> > https://lore.kernel.org/all/20250523170435.668-1-tatyana.e.nikolova@in
> > tel.com/
> >
> > Joshua Hay (6):
> >    idpf: use reserved RDMA vectors from control plane
> >    idpf: implement core RDMA auxiliary dev create, init, and destroy
> >    idpf: implement RDMA vport auxiliary dev create, init, and destroy
> >    idpf: implement remaining IDC RDMA core callbacks and handlers
> >    idpf: implement IDC vport aux driver MTU change handler
> >    idpf: implement get LAN MMIO memory regions
> >
> >   drivers/net/ethernet/intel/idpf/Makefile      |   1 +
> >   drivers/net/ethernet/intel/idpf/idpf.h        | 117 ++++-
> >   .../net/ethernet/intel/idpf/idpf_controlq.c   |  14 +-
> >   .../net/ethernet/intel/idpf/idpf_controlq.h   |  19 +-
> >   drivers/net/ethernet/intel/idpf/idpf_dev.c    |  49 +-
> >   drivers/net/ethernet/intel/idpf/idpf_idc.c    | 497 ++++++++++++++++++
> >   drivers/net/ethernet/intel/idpf/idpf_lib.c    | 102 +++-
> >   drivers/net/ethernet/intel/idpf/idpf_main.c   |  32 +-
> >   drivers/net/ethernet/intel/idpf/idpf_mem.h    |   8 +-
> >   drivers/net/ethernet/intel/idpf/idpf_txrx.h   |   1 +
> >   drivers/net/ethernet/intel/idpf/idpf_vf_dev.c |  45 +-
> >   .../net/ethernet/intel/idpf/idpf_virtchnl.c   | 190 ++++++-
> >   .../net/ethernet/intel/idpf/idpf_virtchnl.h   |   3 +
> >   drivers/net/ethernet/intel/idpf/virtchnl2.h   |  42 +-
> >   include/linux/net/intel/iidc_rdma_idpf.h      |  55 ++
> >   15 files changed, 1102 insertions(+), 73 deletions(-)
> >   create mode 100644 drivers/net/ethernet/intel/idpf/idpf_idc.c
> >   create mode 100644 include/linux/net/intel/iidc_rdma_idpf.h
> 
> 
> Kind regards,
> 
> Paul