From: "Joonwoo Park" <joonwpark81@gmail.com>
To: "'Jay Cliburn'" <jacliburn@bellsouth.net>
Cc: <jeff@garzik.org>, <csnook@redhat.com>,
<linux-kernel@vger.kernel.org>,
<atl1-devel@lists.sourceforge.net>, <netdev@vger.kernel.org>,
<shemminger@linux-foundation.org>
Subject: RE: [PATCH 25/26] [REVISED] atl1: add NAPI support
Date: Wed, 2 Jan 2008 11:56:36 +0900 [thread overview]
Message-ID: <000001c84ceb$18a967c0$47e7a8c0@jason> (raw)
In-Reply-To: <20080101121536.3df9c497@osprey.hogchain.net>
Hi Jay,
+ if ((work_done < budget) || !netif_running(poll_dev)) {
+quit_polling:
+ netif_rx_complete(poll_dev, napi);
+
+ if (!test_bit(__ATL1_DOWN, &adapter->flags))
+ atlx_irq_enable(adapter);
+ }
Not enough :)
If netif_running() is false, it can make problem.
The problem occurs calling netif_rx_complete with work_done == budget.
If do that, net_rx_action would do poll list double deletion.
Since we had reached a consensus on fixing it without each drivers modifications, there is no best solution for that problem for
now. I'm expecting Dave or others work for net-core.
(http://lkml.org/lkml/2007/12/20/600)
IMHO, atl1_clean should wait for work_done != budget even though netif_running is false at this time.
At least, It would not make oops.
Thanks,
Joonwoo
next prev parent reply other threads:[~2008-01-02 2:57 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-01-01 1:59 [PATCH 00/26] atl1: divide and modernize jacliburn
2008-01-01 1:59 ` [PATCH 01/26] atl1: relocate atl1 driver to /drivers/net/atlx jacliburn
2008-01-01 1:59 ` [PATCH 02/26] atl1: move common functions to atlx files jacliburn
2008-01-01 1:59 ` [PATCH 03/26] atl1: fix broken TSO jacliburn
2008-01-01 1:59 ` [PATCH 04/26] atl1: add ethtool register dump jacliburn
2008-01-22 9:54 ` Jeff Garzik
2008-01-01 1:59 ` [PATCH 05/26] atl1: print debug info if rrd error jacliburn
2008-01-22 9:55 ` Jeff Garzik
2008-01-01 1:59 ` [PATCH 06/26] atl1: update initialization parameters jacliburn
2008-01-22 9:56 ` Jeff Garzik
2008-01-23 2:13 ` Jay Cliburn
2008-01-23 2:19 ` Jeff Garzik
2008-01-23 2:30 ` Chris Snook
2008-01-01 1:59 ` [PATCH 07/26] atl1: clarify max rx frame size jacliburn
2008-01-01 1:59 ` [PATCH 08/26] atl1: additional DMA engine configuration jacliburn
2008-01-01 1:59 ` [PATCH 09/26] atl1: refactor tx processing jacliburn
2008-01-22 9:58 ` Jeff Garzik
2008-01-23 0:31 ` Jay Cliburn
2008-01-25 1:00 ` Jay Cliburn
2008-01-25 1:08 ` Chris Snook
2008-01-25 3:01 ` Jeff Garzik
2008-01-01 1:59 ` [PATCH 10/26] atl1: use csum_start jacliburn
2008-01-01 1:59 ` [PATCH 11/26] atl1: refactor initialization and startup jacliburn
2008-01-01 1:59 ` [PATCH 12/26] atl1: refactor atl1_probe jacliburn
2008-01-01 1:59 ` [PATCH 13/26] atl1: refactor interrupt handling jacliburn
2008-01-22 9:59 ` Jeff Garzik
2008-01-01 1:59 ` [PATCH 14/26] atl1: move stray defines to header file jacliburn
2008-01-01 1:59 ` [PATCH 15/26] atl1: tidy up ring management jacliburn
2008-01-01 1:59 ` [PATCH 16/26] atl1: modernize check link function jacliburn
2008-01-01 1:59 ` [PATCH 17/26] atl1: update phy config function jacliburn
2008-01-01 1:59 ` [PATCH 18/26] atl1: make function static jacliburn
2008-01-01 1:59 ` [PATCH 19/26] atl1: modernize down/up functions jacliburn
2008-01-22 10:01 ` Jeff Garzik
2008-01-01 1:59 ` [PATCH 20/26] atl1: update change mtu jacliburn
2008-01-01 1:59 ` [PATCH 21/26] atl1: update atl1_close jacliburn
2008-01-01 2:00 ` [PATCH 22/26] atl1: update netpoll jacliburn
2008-01-01 2:00 ` [PATCH 23/26] atl1: update shutdown and remove functions jacliburn
2008-01-01 2:00 ` [PATCH 24/26] atl1: update wake-on-lan jacliburn
2008-01-01 2:00 ` [PATCH 25/26] atl1: add NAPI support jacliburn
2008-01-01 6:09 ` Joonwoo Park
2008-01-01 18:15 ` [PATCH 25/26] [REVISED] " Jay Cliburn
2008-01-02 2:56 ` Joonwoo Park [this message]
2008-01-02 3:07 ` David Miller
2008-01-01 2:00 ` [PATCH 26/26] atl1: remove experimental tag and clean up comments jacliburn
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