netdev - Re: [PATCH net-next 16/16] sfc: Don't receive packets when the napi budget == 0

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Message-ID: <1394909693.9668.6.camel@edumazet-glaptop2.roam.corp.google.com>
Date:	Sat, 15 Mar 2014 11:54:53 -0700
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Ben Hutchings <ben@...adent.org.uk>
Cc:	David Miller <davem@...emloft.net>, ebiederm@...ssion.com,
	netdev@...r.kernel.org, xiyou.wangcong@...il.com, mpm@...enic.com,
	satyam.sharma@...il.com
Subject: Re: [PATCH net-next 16/16] sfc: Don't receive packets when the napi
 budget == 0

On Sat, 2014-03-15 at 17:23 +0000, Ben Hutchings wrote:

> The Solarflare hardware provides generic event queues for RX and TX
> completions, link changes, errors, etc.  The driver can't process TX
> completions without going through all the other events mixed in with
> them.
> 

ndo_poll_controller() could process all events, and queue incoming
packets through netif_rx().

Nobody cares about performance in this path.



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