netdev - Re: [PATCH v2 iproute2-next 3/6] rdma: Add CM

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Date:   Mon, 26 Mar 2018 20:06:47 +0300
From:   Leon Romanovsky <leon@...nel.org>
To:     Steve Wise <swise@...ngridcomputing.com>
Cc:     David Ahern <dsahern@...il.com>, stephen@...workplumber.org,
        netdev@...r.kernel.org, linux-rdma@...r.kernel.org
Subject: Re: [PATCH v2 iproute2-next 3/6] rdma: Add CM_ID resource tracking
 information

On Mon, Mar 26, 2018 at 10:24:25AM -0500, Steve Wise wrote:
>
>
> On 3/26/2018 10:08 AM, Leon Romanovsky wrote:
> > On Mon, Mar 26, 2018 at 09:55:46AM -0500, Steve Wise wrote:
> >>
> >> On 3/26/2018 9:44 AM, David Ahern wrote:
> >>> On 3/26/18 8:30 AM, Steve Wise wrote:
> >>>> On 3/26/2018 9:17 AM, David Ahern wrote:
> >>>>> On 2/27/18 9:07 AM, Steve Wise wrote:
> >>>>>> diff --git a/rdma/rdma.h b/rdma/rdma.h
> >>>>>> index 5809f70..e55205b 100644
> >>>>>> --- a/rdma/rdma.h
> >>>>>> +++ b/rdma/rdma.h
> >>>>>> @@ -18,10 +18,12 @@
> >>>>>>  #include <libmnl/libmnl.h>
> >>>>>>  #include <rdma/rdma_netlink.h>
> >>>>>>  #include <time.h>
> >>>>>> +#include <net/if_arp.h>
> >>>>>>
> >>>>>>  #include "list.h"
> >>>>>>  #include "utils.h"
> >>>>>>  #include "json_writer.h"
> >>>>>> +#include <rdma/rdma_cma.h>
> >>>>>>
> >>>>> did you forget to add rdma_cma.h? I don't see that file in my repo.
> >>>> It is provided by the rdma-core package, upon which rdma tool now
> >>>> depends for the rdma_port_space enum.
> >>>>
> >>> You need to add a check for the package, and only build rdma if that
> >>> package is installed. See check_mnl in configure for an example.
> >> Ok, that makes sense.
> > IMHO, better solution will be to copy those files to iproute2.
>
> Hey Leon,
>
> Why is it better in your opinion?  My gut tells me adding rdma_cma.h to
> iproute2 means more uabi type syncing.

Making rdmatool be dependant on rdma-core will require that distributions
will update their specs to install rdma-core as a dependency for every
iprotue2 install.

The rdma-core dependency makes sense for RDMA users, but doesn't for most of
the iproute2 users.

Thanks

>
>

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