tree 8f78e43c4b5adf223254da3315f4957ac629a38a
parent eac9e902658dab1e097b8ef064e9e3d16c152cc9
author Eric W. Biederman <ebiederm@xmission.com> 1232449240 +0000
committer David S. Miller <davem@davemloft.net> 1232582444 -0800

tun: Introduce tun_file

Currently the tun code suffers from only having a single word of
data that exists for the entire life of the tun file descriptor.

This results in peculiar holding of references to the network namespace
as well as races between free_netdevice and tun_chr_close.

Fix this by introducing tun_file which will hold the per file state.
For the moment it still holds just a single word so the differences
are all logic changes with no changes in semantics.

Signed-off-by: Eric W. Biederman <ebiederm@aristanetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>