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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_vti.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 '')
| -rw-r--r-- | net/ipv4/ip_vti.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/net/ipv4/ip_vti.c b/net/ipv4/ip_vti.c index 13ef00f1e17b..b8960f3527f3 100644 --- a/net/ipv4/ip_vti.c +++ b/net/ipv4/ip_vti.c @@ -313,7 +313,13 @@ vti_tunnel_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) return -EINVAL; } - p.i_flags |= VTI_ISVTI; + if (!(p.i_flags & GRE_KEY)) + p.i_key = 0; + if (!(p.o_flags & GRE_KEY)) + p.o_key = 0; + + p.i_flags = VTI_ISVTI; + err = ip_tunnel_ioctl(dev, &p, cmd); if (err) return err; |