macsec: restrict to ethernet devices
Only attach macsec to ethernet devices. Syzbot was able to trigger a KMSAN warning in macsec_handle_frame by attaching to a phonet device. Macvlan has a similar check in macvlan_port_create. v1->v2 - fix commit message typo Reported-by: Nsyzbot <syzkaller@googlegroups.com> Signed-off-by: NWillem de Bruijn <willemb@google.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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