On 07/15/2015 10:09 PM, Nikolay Aleksandrov wrote:
> From: Nikolay Aleksandrov <niko...@cumulusnetworks.com>
>
> If a bonding device enslaves devices != arphrd_ether it'll change types
> and if later these devices are released, it can enslave an arphrd_ether
> device and switch back calling ether_setup() which resets dev->flags to
> IFF_BROADCAST|IFF_MULTICAST and clears IFF_MASTER which then could lead
> to many different bugs. This bug seems to have been there since the
> introduction of ether_setup() in bond_enslave().
>
> Signed-off-by: Nikolay Aleksandrov <niko...@cumulusnetworks.com>
> Fixes: e36b9d16c6a6 ("bonding: clean muticast addresses when device changes
> type")
> ---
> drivers/net/bonding/bond_main.c | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
> index 317a49480475..8ba119896e55 100644
> --- a/drivers/net/bonding/bond_main.c
> +++ b/drivers/net/bonding/bond_main.c
> @@ -1368,6 +1368,7 @@ int bond_enslave(struct net_device *bond_dev, struct
> net_device *slave_dev)
> bond_setup_by_slave(bond_dev, slave_dev);
> else {
> ether_setup(bond_dev);
> + bond_dev->flags |= IFF_MASTER;
> bond_dev->priv_flags &= ~IFF_TX_SKB_SHARING;
> }
>
>
Dave please ignore this patch, I'll send a better fix.
Thanks,
Nik
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