netdev - Re: [PATCH] IB/ipoib: Bound the net device to the ipoib

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Date:	Sat, 13 Oct 2007 17:24:09 +0200
From:	"Moni Shoua" <monisonlists@...il.com>
To:	"Roland Dreier" <rdreier@...co.com>
Cc:	"Moni Shoua" <monis@...taire.com>,
	"Jay Vosburgh" <fubar@...ibm.com>, jeff@...zik.org,
	"David Miller" <davem@...emloft.net>, ogerlitz@...taire.com,
	netdev@...r.kernel.org, "Moni Levy" <monil@...taire.com>
Subject: Re: [PATCH] IB/ipoib: Bound the net device to the ipoib_neigh structue

I will be near my lab only tomorrow...
I will check this and let you know.

On 10/11/07, Roland Dreier <rdreier@...co.com> wrote:
>  > It happens only when ib interfaces are slaves of a bonding device.
>  > I thought before that the stuck is in napi_disable() but it's almost right.
>  > I put prints before and after call to napi_disable and see that it is called twice.
>  > I'll try to investigate in this direction.
>  >
>  > ib0: stopping interface
>  > ib0: before napi_disable
>  > ib0: after napi_disable
>  > ib0: downing ib_dev
>  > ib0: All sends and receives done.
>  > ib0: stopping interface
>  > ib0: before napi_disable
>
> Yes, two napi_disable()s in a row without a matching napi_enable()
> will deadlock.  I guess the question is why the ipoib interface is
> being stopped twice.
>
> If you just take the net-2.6.24 tree (without bonding patches), does
> bonding for ethernet interfaces work OK, or is there a similar problem
> with double napi_disable()?  How about bonding of ethernet after this
> batch of bonding patches?
>
>  - R.
> -
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