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(parent: a883ca8) | patch
tun: honor IFF_UP in tun_get_user()
authorEric Dumazet <edumazet@google.com>
Wed, 16 Dec 2015 16:57:37 +0000 (08:57 -0800)
committerDavid S. Miller <davem@davemloft.net>
Thu, 17 Dec 2015 20:25:57 +0000 (15:25 -0500)
commitc499f4eaaa213609a1b5eab47397849cf0e03598
tree04d86f96dfb815ffb3d0e2a7cc1e01bcd23b48aftree | snapshot
parenta883ca8bed5af6305a23adc18097f36b24bd81a5commit | diff
tun: honor IFF_UP in tun_get_user()

If a tun interface is turned down, we should not allow packet injection
into the kernel.

Kernel does not send packets to the tun already.

TUNATTACHFILTER can not be used as only tun_net_xmit() is taking care
of it.

Reported-by: Curt Wohlgemuth <curtw@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/net/tun.c diff | blob | history
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