netdev - Re: [PATCH iproute2 3/5] rdma: Add device capability parsing

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Message-ID: <20170627173301.GS1248@mtr-leonro.local>
Date:   Tue, 27 Jun 2017 20:33:01 +0300
From:   Leon Romanovsky <leon@...nel.org>
To:     Jason Gunthorpe <jgunthorpe@...idianresearch.com>
Cc:     Stephen Hemminger <stephen@...workplumber.org>,
        Doug Ledford <dledford@...hat.com>,
        Ariel Almog <ariela@...lanox.com>,
        Dennis Dalessandro <dennis.dalessandro@...el.com>,
        Linux RDMA <linux-rdma@...r.kernel.org>,
        Linux Netdev <netdev@...r.kernel.org>
Subject: Re: [PATCH iproute2 3/5] rdma: Add device capability parsing

On Tue, Jun 27, 2017 at 10:41:50AM -0600, Jason Gunthorpe wrote:
> On Tue, Jun 27, 2017 at 12:21:29PM +0300, Leon Romanovsky wrote:
> > > What will be the output of such command?
> > >  $ rdma dev show mlx5_4
> >
> > ip-like style:
> >
> > $ rdma dev show mlx5_4
> > 5: mlx5_4:
> >     caps: <BAD_PKEY_CNTR, BAD_QKEY_CNTR, CHANGE_PHY_PORT, PORT_ACTIVE_EVENT, SYS_IMAGE_GUID, RC_RNR_NAK_GEN, MEM_WINDOW, UD_IP_CSUM, UD_TSO, XRC, MEM_MGT_EXTENSIONS, BLOCK_MULTICAST_LOOPBACK, MEM_WINDOW_TYPE_2B, RAW_IP_CSUM, SIGNATURE_HANDOVER, VIRTUAL_FUNCTION>
> > $ rdma link show mlx5_3
> > 4/1: mlx5_3/1:
> >     caps: <CM, IP_BASED_GIDS>
>
> I think that is better, maybe it should only show under some kind of
> verbose mode, I don't know, it depends what other stuff ends up being
> displayed..
>
> Are you going to dump the gid table and pkey table too in one of these commands?

My initial plan was to put all parsers under their respective names, in
the similar way as I did for caps: $ rdma dev show mlx5_4 caps

So for large dumps, I'm going to use that technique again and maybe print summary as a default.
For example, for gids, we can print utilization as a summary while whole
table if someone really wants it: $ rdma link show mlx5_4/1 gids <index>

Something like that.

Thanks

>
> Jason

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