From mboxrd@z Thu Jan  1 00:00:00 1970
From: Stephen Hemminger <stephen@networkplumber.org>
Subject: Re: [PATCH v4 2/3] net/virtio: add packet injection
	method
Date: Fri, 5 Jan 2018 12:27:37 -0800
Message-ID: <20180105122737.52c69b1a@xeon-e3>
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To: Xiao Wang <xiao.w.wang@intel.com>
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On Thu,  4 Jan 2018 07:59:37 -0800
Xiao Wang <xiao.w.wang@intel.com> wrote:

> This patch adds dev_pause, dev_resume and inject_pkts api to allow
> driver to pause the worker thread and inject special packets into
> Tx queue. The next patch will be based on this.
> 
> Signed-off-by: Xiao Wang <xiao.w.wang@intel.com>

Why is this needed? It isn't obvious what the mechanism is trying to solve.