tree b4a95f8442b99cea946bfc8a4767489c0107feca
parent 86bcebafc5e7f5163ccf828792fe694b112ed6fa
author Herbert Xu <herbert@gondor.apana.org.au> 1239700183 -0700
committer David S. Miller <davem@davemloft.net> 1239700183 -0700

tun: Fix crash with non-GSO users

When I made the tun driver use non-linear packets as the preferred
option, it broke non-GSO users because they would end up allocating
a completely non-linear packet, which triggers a crash when we call
eth_type_trans.

This patch reverts non-GSO users to using linear packets and adds
a check to ensure that GSO users can't cause crashes in the same
way.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>