From: Stephen Hemminger <shemminger@vyatta.com>
To: Usha Srinivasan <usha.srinivasan@qlogic.com>
Cc: "netdev@vger.kernel.org" <netdev@vger.kernel.org>
Subject: Re: Receive processing stops when dev->poll returns 1
Date: Thu, 5 Aug 2010 09:22:43 -0700 [thread overview]
Message-ID: <20100805092243.41671259@nehalam> (raw)
In-Reply-To: <7866DA1F8D2D4541B87FEE88E633ABAA2B72081FDF@MNEXMB1.qlogic.org>
On Thu, 5 Aug 2010 11:11:51 -0500
Usha Srinivasan <usha.srinivasan@qlogic.com> wrote:
> Thanks for your response. What you said is exactly what my driver is doing:
>
>
> <= 2.6.23
> Calls netif_rx_complete if done < budget; decrements quota & *budget by done; returns 0 if done < budget and 1 otherwise.
>
> When 1 is returned, I encounter the problem I described)
>
> > 2.6.23
> Calls napi-complete if done < budget; returns done.
>
> When done==budget, I encounter the problem I described.
>
> Any ideas?
Ignore last mail...
If you done == budget, the poll will be recalled (after other drivers).
If quantum exhausts, then it gets called it gets deferred to ksoftirq
thread.
One possibility is that the driver is looking at wrong parameter
for budget and is exceeding the requested value. Please post your code.
next prev parent reply other threads:[~2010-08-05 16:22 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-08-05 14:20 Receive processing stops when dev->poll returns 1 Usha Srinivasan
2010-08-05 16:04 ` Stephen Hemminger
2010-08-05 16:11 ` Usha Srinivasan
2010-08-05 16:16 ` Stephen Hemminger
2010-08-05 16:22 ` Stephen Hemminger [this message]
2010-08-05 16:36 ` Usha Srinivasan
2010-08-05 17:37 ` Stephen Hemminger
2010-08-05 18:11 ` Usha Srinivasan
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