From 6b1bf096508c870889c2be63c7757a04d72116fe Mon Sep 17 00:00:00 2001 From: Moni Shoua Date: Tue, 9 Oct 2007 19:43:40 -0700 Subject: [PATCH] net/bonding: Enable IP multicast for bonding IPoIB devices Allow to enslave devices when the bonding device is not up. Over the discussion held at the previous post this seemed to be the most clean way to go, where it is not expected to cause instabilities. Normally, the bonding driver is UP before any enslavement takes place. Once a netdevice is UP, the network stack acts to have it join some multicast groups (eg the all-hosts 224.0.0.1). Now, since ether_setup() have set the bonding device type to be ARPHRD_ETHER and address len to be ETHER_ALEN, the net core code computes a wrong multicast link address. This is b/c ip_eth_mc_map() is called where for multicast joins taking place after the enslavement another ip_xxx_mc_map() is called (eg ip_ib_mc_map() when the bond type is ARPHRD_INFINIBAND) Signed-off-by: Moni Shoua Signed-off-by: Or Gerlitz Acked-by: Jay Vosburgh Signed-off-by: Jeff Garzik --- drivers/net/bonding/bond_main.c | 5 +++-- drivers/net/bonding/bond_sysfs.c | 6 ++---- 2 files changed, 5 insertions(+), 6 deletions(-) diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c index 6508e0b2ea72..3eebfe287533 100644 --- a/drivers/net/bonding/bond_main.c +++ b/drivers/net/bonding/bond_main.c @@ -1280,8 +1280,9 @@ int bond_enslave(struct net_device *bond_dev, struct net_device *slave_dev) /* bond must be initialized by bond_open() before enslaving */ if (!(bond_dev->flags & IFF_UP)) { - dprintk("Error, master_dev is not up\n"); - return -EPERM; + printk(KERN_WARNING DRV_NAME + " %s: master_dev is not up in bond_enslave\n", + bond_dev->name); } /* already enslaved */ diff --git a/drivers/net/bonding/bond_sysfs.c b/drivers/net/bonding/bond_sysfs.c index 6f49ca7e9b66..ca4e429f9ec2 100644 --- a/drivers/net/bonding/bond_sysfs.c +++ b/drivers/net/bonding/bond_sysfs.c @@ -266,11 +266,9 @@ static ssize_t bonding_store_slaves(struct device *d, /* Quick sanity check -- is the bond interface up? */ if (!(bond->dev->flags & IFF_UP)) { - printk(KERN_ERR DRV_NAME - ": %s: Unable to update slaves because interface is down.\n", + printk(KERN_WARNING DRV_NAME + ": %s: doing slave updates when interface is down.\n", bond->dev->name); - ret = -EPERM; - goto out; } /* Note: We can't hold bond->lock here, as bond_create grabs it. */ -- 2.20.1