netdev - Re: mlx4 netpoll and rx/tx weirdness

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Message-Id: <20140317.172230.76193310497948256.davem@davemloft.net>
Date:	Mon, 17 Mar 2014 17:22:30 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	eric.dumazet@...il.com
Cc:	ebiederm@...ssion.com, ben@...adent.org.uk, netdev@...r.kernel.org,
	xiyou.wangcong@...il.com, mpm@...enic.com, satyam.sharma@...il.com,
	amirv@...lanox.com, ogerlitz@...lanox.com, jackm@....mellanox.co.il
Subject: Re: mlx4 netpoll and rx/tx weirdness

From: Eric Dumazet <eric.dumazet@...il.com>
Date: Sun, 16 Mar 2014 09:17:01 -0700

> Wait a minute, I thought ndo_poll_controller() had to be synchronous,
> not schedule a napi ?

ndo_poll_controller() basically runs the hardware interrupt handler,
which might schedule NAPI processing.  Then netpoll invokes
the NAPI poll in whatever state ndo_poll_controller() left it in.
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