> Subject: Re: [rdma 14/16] RDMA/irdma: Add ABI definitions > > On Thu, Jul 04, 2019 at 10:40:21AM +0300, Leon Romanovsky wrote: > > On Wed, Jul 03, 2019 at 07:12:57PM -0700, Jeff Kirsher wrote: > > > From: Mustafa Ismail <mustafa.ismail@xxxxxxxxx> > > > > > > Add ABI definitions for irdma. > > > > > > Signed-off-by: Mustafa Ismail <mustafa.ismail@xxxxxxxxx> > > > Signed-off-by: Shiraz Saleem <shiraz.saleem@xxxxxxxxx> > > > include/uapi/rdma/irdma-abi.h | 130 > > > ++++++++++++++++++++++++++++++++++ > > > 1 file changed, 130 insertions(+) > > > create mode 100644 include/uapi/rdma/irdma-abi.h > > > > > > diff --git a/include/uapi/rdma/irdma-abi.h > > > b/include/uapi/rdma/irdma-abi.h new file mode 100644 index > > > 000000000000..bdfbda4c829e > > > +++ b/include/uapi/rdma/irdma-abi.h > > > @@ -0,0 +1,130 @@ > > > +/* SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause */ > > > +/* Copyright (c) 2006 - 2019 Intel Corporation. All rights reserved. > > > + * Copyright (c) 2005 Topspin Communications. All rights reserved. > > > + * Copyright (c) 2005 Cisco Systems. All rights reserved. > > > + * Copyright (c) 2005 Open Grid Computing, Inc. All rights reserved. > > > + */ > > > + > > > +#ifndef IRDMA_ABI_H > > > +#define IRDMA_ABI_H > > > + > > > +#include <linux/types.h> > > > + > > > +/* irdma must support legacy GEN_1 i40iw kernel > > > + * and user-space whose last ABI ver is 5 */ #define IRDMA_ABI_VER > > > +6 > > > > Can you please elaborate about it more? > > There is no irdma code in RDMA yet, so it makes me wonder why new > > define shouldn't start from 1. > > It is because they are ABI compatible with the current user space, which raises the > question why we even have this confusing header file.. It is because we need to support current providers/i40iw user-space. Our user-space patch series will introduce a new provider (irdma) whose ABI ver. is also 6 (capable of supporting X722 and which will work with i40iw driver on older kernels) and removes providers/i40iw from rdma-core.
