From: Igor Ryzhov <iryzhov@nfware.com>
To: Stephen Hemminger <stephen@networkplumber.org>
Cc: dev@dpdk.org
Subject: Re: [dpdk-dev] [PATCH v2] kni: use kni_ethtool_ops only with unknown drivers
Date: Sat, 1 Dec 2018 14:12:54 +0300 [thread overview]
Message-ID: <CAF+s_FxmjbisjuESsn-7+_cMm+19PUrBhNz-4nFUoGJR-iPaRg@mail.gmail.com> (raw)
In-Reply-To: <20181130153815.3be2f30b@xeon-e3>
Hi Stephen,
I also do not see the point of the current implementation of ethtool
support.
That's why I sent this patch – it enables ethtool_ops for all devices,
independent of the underlying driver.
Right now only .get_link is supported, but I am thinking about
implementation of a larger set of functions, using req/resp queue, like
netdev_ops functions are working.
Regarding the KNI itself, we use it as Linux mirror of physical port for:
1. Port configuration from Linux – such functions as set_mac, change_mtu,
etc. And ethtool_ops will be used the same way.
2. Passing control-plane packets to Linux.
Can virtio user be used the same way, as a mirror of physical port?
Best regards,
Igor
On Sat, Dec 1, 2018 at 2:38 AM Stephen Hemminger <stephen@networkplumber.org>
wrote:
> On Fri, 30 Nov 2018 22:47:50 +0300
> Igor Ryzhov <iryzhov@nfware.com> wrote:
>
> > Current implementation of kni_ethtool_ops just uses corresponding
> > ethtool_ops function of underlying driver for all functions except for
> > .get_link. This commit sets kni->net_dev->ethtool_ops directly to the
> > ethtool_ops of the corresponding driver.
> >
> > For unknown drivers (all but ixgbe and i40e) we still use
> > kni_ethtool_ops with implemented .get_link function.
> >
> > Signed-off-by: Igor Ryzhov <iryzhov@nfware.com>
>
> Why does KNI still support ethtool which:
> 1. Only works on a subset of devices
> 2. Requires a 3rd implmentation of the HW device (Linux, DPDK, and KNI)
>
> Then again why does KNI exist at all? What is missing from virtio user
> which
> is faster anyway.
>
next prev parent reply other threads:[~2018-12-01 11:13 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-11-30 19:29 [dpdk-dev] [PATCH] " Igor Ryzhov
2018-11-30 19:47 ` [dpdk-dev] [PATCH v2] " Igor Ryzhov
2018-11-30 23:38 ` Stephen Hemminger
2018-12-01 11:12 ` Igor Ryzhov [this message]
2018-12-01 17:31 ` Stephen Hemminger
2018-12-02 10:54 ` Igor Ryzhov
2018-12-03 19:51 ` Stephen Hemminger
2018-12-18 18:10 ` Ferruh Yigit
2018-12-03 13:09 ` Ferruh Yigit
2018-12-03 14:06 ` Igor Ryzhov
2018-12-18 18:13 ` Ferruh Yigit
2019-01-05 16:53 ` Igor Ryzhov
2018-12-18 18:04 ` Ferruh Yigit
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