netdev - Re: [PATCH net-2.6 V2] bonding:reset backup and inactive flag of slave

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Message-ID: <j2dnte$p7a$1@dough.gmane.org>
Date:	Tue, 16 Aug 2011 12:30:39 +0000 (UTC)
From:	WANG Cong <xiyou.wangcong@...il.com>
To:	netdev@...r.kernel.org
Subject: Re: [PATCH net-2.6 V2] bonding:reset backup and inactive flag of
 slave

On Tue, 16 Aug 2011 09:57:35 +0800, Weiping Pan wrote:

> Eduard Sinelnikov (eduard.sinelnikov@...il.com) found that if we change
> bonding mode from active backup to round robin, some slaves are still
> keeping "backup", and won't transmit packets.
> 
> As Jay Vosburgh(fubar@...ibm.com) pointed out that we can work around
> that by removing the bond_is_active_slave() check, because the "backup"
> flag is only meaningful for active backup mode.
> 
> But if we just simply ignore the bond_is_active_slave() check, the
> transmission will work fine, but we can't maintain the correct value of
> "backup" flag for each slaves, though it is meaningless for other mode
> than active backup.
> 
> I'd like to reset "backup" and "inactive" flag in bond_open, thus we can
> keep the correct value of them.
> 
> As for bond_is_active_slave(), I'd like to prepare another patch to
> handle it.
> 
> V2:
> Use C style comment.
> Move read_lock(&bond->curr_slave_lock). Replace restore with reset, for
> active backup mode, it means "restore", but for other modes, it means
> "reset".
> 
> Signed-off-by: Weiping Pan <panweiping3@...il.com>

Reviewed-by: WANG Cong <xiyou.wangcong@...il.com>

Thanks.

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