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| author |   Dmitry Popov <ixaphire@qrator.net> | 2014-06-08 02:06:25 +0400 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2014-06-11 00:30:52 -0700 |
| commit | 7c8e6b9c2811fd37702a9043eabea3545022011e (patch) | |
| tree | 3db0b14dd5d349ecbc21de5b20d2205081f3f5c2 /net/ipv4/ip_tunnel.c | |
| parent | dns_resolver: assure that dns_query() result is null-terminated (diff) | |
| download | linux-dev-7c8e6b9c2811fd37702a9043eabea3545022011e.tar.xz linux-dev-7c8e6b9c2811fd37702a9043eabea3545022011e.zip | |
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.c | 10 |
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); |