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authorDmitry Popov <ixaphire@qrator.net>2014-06-08 02:06:25 +0400
committerDavid S. Miller <davem@davemloft.net>2014-06-11 11:30:52 +0400
commit7c8e6b9c2811fd37702a9043eabea3545022011e (patch)
tree3db0b14dd5d349ecbc21de5b20d2205081f3f5c2 /net/ipv4/ip_tunnel.c
parent84a7c0b1db1c17d5ded8d3800228a608e1070b40 (diff)
downloadlinux-7c8e6b9c2811fd37702a9043eabea3545022011e.tar.xz
ip_vti: Fix 'ip tunnel add' with 'key' parameters
ip tunnel add remote 10.2.2.1 local 10.2.2.2 mode vti ikey 1 okey 2 translates to p->iflags = VTI_ISVTI|GRE_KEY and p->i_key = 1, but GRE_KEY != TUNNEL_KEY, so ip_tunnel_ioctl would set i_key to 0 (same story with o_key) making us unable to create vti tunnels with [io]key via ip tunnel. We cannot simply translate GRE_KEY to TUNNEL_KEY (as GRE module does) because vti_tunnels with same local/remote addresses but different ikeys will be treated as different then. So, imo the best option here is to move p->i_flags & *_KEY check for vti tunnels from ip_tunnel.c to ip_vti.c and to think about [io]_mark field for ip_tunnel_parm in the future. Signed-off-by: Dmitry Popov <ixaphire@qrator.net> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/ip_tunnel.c')
-rw-r--r--net/ipv4/ip_tunnel.c10
1 files changed, 6 insertions, 4 deletions
diff --git a/net/ipv4/ip_tunnel.c b/net/ipv4/ip_tunnel.c
index 3f6135bc54ef..3dbb550abb30 100644
--- a/net/ipv4/ip_tunnel.c
+++ b/net/ipv4/ip_tunnel.c
@@ -748,10 +748,12 @@ int ip_tunnel_ioctl(struct net_device *dev, struct ip_tunnel_parm *p, int cmd)
goto done;
if (p->iph.ttl)
p->iph.frag_off |= htons(IP_DF);
- if (!(p->i_flags&TUNNEL_KEY))
- p->i_key = 0;
- if (!(p->o_flags&TUNNEL_KEY))
- p->o_key = 0;
+ if (!(p->i_flags & VTI_ISVTI)) {
+ if (!(p->i_flags & TUNNEL_KEY))
+ p->i_key = 0;
+ if (!(p->o_flags & TUNNEL_KEY))
+ p->o_key = 0;
+ }
t = ip_tunnel_find(itn, p, itn->fb_tunnel_dev->type);