netdev - [PATCH net-next v3 1/2] bonding: clean the primary slave if there is no slave matching new primary

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Message-ID: <52DA3B44.1000605@huawei.com>
Date:	Sat, 18 Jan 2014 16:28:52 +0800
From:	Ding Tianhong <dingtianhong@...wei.com>
To:	Jay Vosburgh <fubar@...ibm.com>,
	Veaceslav Falico <vfalico@...hat.com>,
	"David S. Miller" <davem@...emloft.net>,
	Netdev <netdev@...r.kernel.org>
Subject: [PATCH net-next v3 1/2] bonding: clean the primary slave if there
 is no slave matching new primary

If the new primay is not matching any slave in the bond, the bond should
record it to params, clean the primary slave and select a new active slave.

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..0ee0bfe 100644
--- a/drivers/net/bonding/bond_options.c
+++ b/drivers/net/bonding/bond_options.c
@@ -512,6 +512,12 @@ int bond_option_primary_set(struct bonding *bond, const char *primary)
 		}
 	}
 
+	if (bond->primary_slave) {
+		pr_info("%s: Setting primary slave to None.\n",
+			bond->dev->name);
+		bond->primary_slave = NULL;
+		bond_select_active_slave(bond);
+	}
 	strncpy(bond->params.primary, primary, IFNAMSIZ);
 	bond->params.primary[IFNAMSIZ - 1] = 0;
 
-- 
1.8.0


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