net: fix creation adjacent device symlinks
__netdev_adjacent_dev_insert may add adjust device of different net namespace, without proper check it leads to emergence of broken sysfs links from/to devices in another namespace. Fix: rewrite netdev_adjacent_is_neigh_list macro as a function, move net_eq check into netdev_adjacent_is_neigh_list. (thanks David) related to: 4c75431aSigned-off-by: Alexander Fomichev <git.user@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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