extcon: Add an API to get extcon device from dt node

[firefly-linux-kernel-4.4.55.git] / net / ipv4 / ipip.c

diff --git a/net/ipv4/ipip.c b/net/ipv4/ipip.c
index e6905fbda2a2981ebc5e9f347265507ec2154f27..51fc2a1dcdd3aa564147933d7485ec6356e9ad12 100644 (file)
--- a/net/ipv4/ipip.c
+++ b/net/ipv4/ipip.c
@@ -244,11 +244,13 @@ ipip_tunnel_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
        if (copy_from_user(&p, ifr->ifr_ifru.ifru_data, sizeof(p)))
                return -EFAULT;
 
-       if (p.iph.version != 4 || p.iph.protocol != IPPROTO_IPIP ||
-                       p.iph.ihl != 5 || (p.iph.frag_off&htons(~IP_DF)))
-               return -EINVAL;
-       if (p.i_key || p.o_key || p.i_flags || p.o_flags)
-               return -EINVAL;
+       if (cmd == SIOCADDTUNNEL || cmd == SIOCCHGTUNNEL) {
+               if (p.iph.version != 4 || p.iph.protocol != IPPROTO_IPIP ||
+                   p.iph.ihl != 5 || (p.iph.frag_off&htons(~IP_DF)))
+                       return -EINVAL;
+       }
+
+       p.i_key = p.o_key = p.i_flags = p.o_flags = 0;
        if (p.iph.ttl)
                p.iph.frag_off |= htons(IP_DF);