forked from luck/tmp_suning_uos_patched
ipip: fix a regression in ioctl
This is a regression introduced by
commit fd58156e45
(IPIP: Use ip-tunneling code.)
Similar to GRE tunnel, previously we only check the parameters
for SIOCADDTUNNEL and SIOCCHGTUNNEL, after that commit, the
check is moved for all commands.
So, just check for SIOCADDTUNNEL and SIOCCHGTUNNEL.
Also, the check for i_key, o_key etc. is suspicious too,
which did not exist before, reset them before passing
to ip_tunnel_ioctl().
Cc: Pravin B Shelar <pshelar@nicira.com>
Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Cong Wang <amwang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
parent
e1558a93b6
commit
3b7b514f44
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@ -244,11 +244,13 @@ ipip_tunnel_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
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if (copy_from_user(&p, ifr->ifr_ifru.ifru_data, sizeof(p)))
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return -EFAULT;
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if (p.iph.version != 4 || p.iph.protocol != IPPROTO_IPIP ||
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p.iph.ihl != 5 || (p.iph.frag_off&htons(~IP_DF)))
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return -EINVAL;
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if (p.i_key || p.o_key || p.i_flags || p.o_flags)
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return -EINVAL;
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if (cmd == SIOCADDTUNNEL || cmd == SIOCCHGTUNNEL) {
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if (p.iph.version != 4 || p.iph.protocol != IPPROTO_IPIP ||
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p.iph.ihl != 5 || (p.iph.frag_off&htons(~IP_DF)))
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return -EINVAL;
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}
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p.i_key = p.o_key = p.i_flags = p.o_flags = 0;
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if (p.iph.ttl)
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p.iph.frag_off |= htons(IP_DF);
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