From: Thomas Monjalon <thomas@monjalon.net>
To: "Tan, Jianfeng" <jianfeng.tan@intel.com>
Cc: dev@dpdk.org
Subject: Re: [dpdk-dev] [PATCH] bus/vdev: add custom scan hook
Date: Fri, 01 Dec 2017 09:42:15 +0100 [thread overview]
Message-ID: <1811632.lxrxycaykj@xps> (raw)
In-Reply-To: <8fc8dcb8-c32b-8ec4-8762-b2f2bba09c5c@intel.com>
Hi,
01/12/2017 06:48, Tan, Jianfeng:
> Hi Thomas,
>
> Please help us to understand why we need this.
>
>
> On 12/1/2017 8:36 AM, Thomas Monjalon wrote:
> > The scan callback allows to spawn a vdev automatically
> > given some custom scan rules.
>
> These two new APIs (rte_vdev_add_custom_scan and
> rte_vdev_remove_custom_scan) are called by applications?
Yes, the application can use it but it can also be used by a DPDK
driver or library.
> If so, why not just constructing them in the parameters before passing
> to rte_eal_init?
It is not only for initialization because it will also work when
we will have some hotplug mechanism where the scan is run during run-time.
> > It is especially useful to create a TAP device automatically
> > connected to a netdevice as remote.
>
> It sounds like an use case. Without this patch, I suppose we can already
> do this?
Yes we can already update the devargs list.
But this hook will help to do it on hotplug events.
next prev parent reply other threads:[~2017-12-01 8:42 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-12-01 0:36 Thomas Monjalon
2017-12-01 0:40 ` Thomas Monjalon
2017-12-01 5:48 ` Tan, Jianfeng
2017-12-01 8:42 ` Thomas Monjalon [this message]
2017-12-04 8:08 ` Tan, Jianfeng
2017-12-04 9:31 ` Thomas Monjalon
2017-12-05 8:27 ` Tan, Jianfeng
2017-12-05 8:41 ` Thomas Monjalon
2017-12-05 13:56 ` Tan, Jianfeng
2017-12-05 15:21 ` Thomas Monjalon
2017-12-06 2:48 ` Tan, Jianfeng
2017-12-06 2:52 ` Tan, Jianfeng
2017-12-06 9:21 ` Thomas Monjalon
2017-12-07 2:30 ` Tan, Jianfeng
2017-12-30 21:21 ` [dpdk-dev] [PATCH v2] " Thomas Monjalon
2018-01-03 1:16 ` Tan, Jianfeng
2018-01-03 8:05 ` Thomas Monjalon
2018-01-08 23:25 ` [dpdk-dev] [PATCH v3] " Thomas Monjalon
2018-01-11 23:47 ` Thomas Monjalon
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