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| author | Nicolas Dichtel <nicolas.dichtel@6wind.com> | 2014-04-11 17:51:18 +0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-04-13 01:03:11 +0400 |
| commit | 5a4552752d8f7f4cef1d98775ece7adb7616fde2 (patch) | |
| tree | ebdd9dd63fce91fec7a5ba8a2f4e5d56738dac0b /net/ipv4/ip_vti.c | |
| parent | 810d8cedcc880dca8b64e05fe1331ab5d4f8d992 (diff) | |
| download | linux-5a4552752d8f7f4cef1d98775ece7adb7616fde2.tar.xz | |
gre: don't allow to add the same tunnel twice
Before the patch, it was possible to add two times the same tunnel:
ip l a gre1 type gre remote 10.16.0.121 local 10.16.0.249
ip l a gre2 type gre remote 10.16.0.121 local 10.16.0.249
It was possible, because ip_tunnel_newlink() calls ip_tunnel_find() with the
argument dev->type, which was set only later (when calling ndo_init handler
in register_netdevice()). Let's set this type in the setup handler, which is
called before newlink handler.
Introduced by commit c54419321455 ("GRE: Refactor GRE tunneling code.").
CC: Pravin B Shelar <pshelar@nicira.com>
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/ip_vti.c')
0 files changed, 0 insertions, 0 deletions