From: Antonio Quartulli <or...@autistici.org>
Date: Sat, 30 Mar 2013 18:07:37 +0100
> iflink is currently set to 0 in __gre_tunnel_init(). This
> function is invoked in gre_tap_init() and
> ipgre_tunnel_init() which are both used to initialise the
> ndo_init field of the respective net_device_ops structs
> (ipgre.. and gre_tap..) used by GRE interfaces.
>
> However, in netdevice_register() iflink is first set to -1,
> then ndo_init is invoked and then iflink is assigned to a
> proper value if and only if it still was -1.
>
> Assigning 0 to iflink in ndo_init is therefore first
> preventing netdev_register() to correctly assign it a proper
> value and then breaking iflink at all since 0 has not
> correct meaning.
>
> Fix this by removing the iflink assignment in
> __gre_tunnel_init().
>
> Introduced by c54419321455631079c7d6e60bc732dd0c5914c5
> ("GRE: Refactor GRE tunneling code.")
>
> Reported-by: Fengguang Wu <fengguang...@intel.com>
> Signed-off-by: Antonio Quartulli <or...@autistici.org>
Please always indicate, in the subject line inside of the [] brackets,
what tree the patch is targetted at.
I can use "git describe" on the guilty commit, but why take a chance?
Applied to net-next, thanks.
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