From: Paolo Abeni <[email protected]> Date: Thu, 14 Jul 2016 18:00:10 +0200
> macsec can't cope with mtu frames which need vlan tag insertion, and > vlan device set the default mtu equal to the underlying dev's one. > By default vlan over macsec devices use invalid mtu, dropping > all the large packets. > This patch adds a netif helper to check if an upper vlan device > needs mtu reduction. The helper is used during vlan devices > initialization to set a valid default and during mtu updating to > forbid invalid, too bit, mtu values. > The helper currently only check if the lower dev is a macsec device, > if we get more users, we need to update only the helper (possibly > reserving an additional IFF bit). > > Signed-off-by: Paolo Abeni <[email protected]> Applied and queued up for -stable.
