netdev - Re: [PATCH net-next 3/4] bonding: do not save non-existent device to bond primary in sysfs

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Date:	Thu, 9 Jan 2014 12:47:48 +0100
From:	Veaceslav Falico <vfalico@...hat.com>
To:	Ding Tianhong <dingtianhong@...wei.com>
Cc:	Jay Vosburgh <fubar@...ibm.com>,
	"David S. Miller" <davem@...emloft.net>,
	Netdev <netdev@...r.kernel.org>
Subject: Re: [PATCH net-next 3/4] bonding: do not save non-existent device to
 bond primary in sysfs

On Thu, Jan 09, 2014 at 07:20:54PM +0800, Ding Tianhong wrote:
>Do not save non-existent device to bond primary in sysfs.

Again, no - this interface might be enslaved after we've set the
parameters, as it usually does.

>
>Signed-off-by: Ding Tianhong <dingtianhong@...wei.com>
>---
> drivers/net/bonding/bond_options.c | 6 ++++++
> 1 file changed, 6 insertions(+)
>
>diff --git a/drivers/net/bonding/bond_options.c b/drivers/net/bonding/bond_options.c
>index 945a666..9b4518f 100644
>--- a/drivers/net/bonding/bond_options.c
>+++ b/drivers/net/bonding/bond_options.c
>@@ -501,6 +501,12 @@ int bond_option_primary_set(struct bonding *bond, const char *primary)
> 		goto out;
> 	}
>
>+	if (!__dev_get_by_name(dev_net(bond->dev), primary)) {
>+		pr_err("%s: unable to set non-existent device %s to primary.\n",
>+		       bond->dev->name, primary);
>+		goto out;
>+	}
>+
> 	bond_for_each_slave(bond, slave, iter) {
> 		if (strncmp(slave->dev->name, primary, IFNAMSIZ) == 0) {
> 			pr_info("%s: Setting %s as primary slave.\n",
>-- 
>1.8.0
>
>
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