From: Jarek Poplawski <jarkao2@gmail.com>
To: Jeff Garzik <jgarzik@pobox.com>, David Miller <davem@davemloft.net>
Cc: Alexander Huemer <alexander.huemer@sbg.ac.at>,
linux-net@vger.kernel.org, netdev@vger.kernel.org
Subject: [PATCH] Re: kernel panics with net_rx_action on kernels >2.6.26
Date: Tue, 16 Dec 2008 14:06:51 +0000 [thread overview]
Message-ID: <20081216140651.GA6537@ff.dom.local> (raw)
In-Reply-To: <20081216.012247.267028680.davem@davemloft.net>
On Tue, Dec 16, 2008 at 01:22:47AM -0800, David Miller wrote:
...
> Jarek this looks good and it looks to be tested as well.
>
> Could you formally submit this?
------------------->
drivers/net: starfire: Fix napi ->poll() weight handling
starfire napi ->poll() handler can return work == weight after calling
netif_rx_complete() (if there is no more work). It is illegal and this
patch fixes it.
Reported-by: Alexander Huemer <alexander.huemer@sbg.ac.at>
Tested-by: Alexander Huemer <alexander.huemer@sbg.ac.at>
Signed-off-by: Jarek Poplawski <jarkao2@gmail.com>
---
drivers/net/starfire.c | 5 +++++
1 files changed, 5 insertions(+), 0 deletions(-)
diff --git a/drivers/net/starfire.c b/drivers/net/starfire.c
index 0358809..f86d6bb 100644
--- a/drivers/net/starfire.c
+++ b/drivers/net/starfire.c
@@ -1503,6 +1503,11 @@ static int __netdev_rx(struct net_device *dev, int *quota)
desc->status = 0;
np->rx_done = (np->rx_done + 1) % DONE_Q_SIZE;
}
+
+ if (*quota == 0) { /* out of rx quota */
+ retcode = 1;
+ goto out;
+ }
writew(np->rx_done, np->base + CompletionQConsumerIdx);
out:
next prev parent reply other threads:[~2008-12-16 14:06 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <4945157C.9000305@sbg.ac.at>
2008-12-15 6:48 ` kernel panics with net_rx_action on kernels >2.6.26 David Miller
2008-12-15 13:35 ` Jarek Poplawski
2008-12-15 20:11 ` Alexander Huemer
2008-12-16 6:59 ` Jarek Poplawski
2008-12-16 9:22 ` David Miller
2008-12-16 14:06 ` Jarek Poplawski [this message]
2008-12-16 23:42 ` [PATCH] " David Miller
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