tree 607673dfc7cbfa106a6ae87456502a475c9beee8
parent 5ee15c101f29e0093ffb5448773ccbc786eb313b
author Matteo Croce <mcroce@redhat.com> 1554978393 +0200
committer David S. Miller <davem@davemloft.net> 1555006234 -0700

net: thunderx: don't allow jumbo frames with XDP

The thunderx driver forbids to load an eBPF program if the MTU is too high,
but this can be circumvented by loading the eBPF, then raising the MTU.

Fix this by limiting the MTU if an eBPF program is already loaded.

Fixes: 05c773f52b96e ("net: thunderx: Add basic XDP support")
Signed-off-by: Matteo Croce <mcroce@redhat.com>
Acked-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>