Merge 4.4.118 into android-4.4

[sagit-ice-cold/kernel_xiaomi_msm8998.git] / net / ipv6 / ip6_vti.c

diff --git a/net/ipv6/ip6_vti.c b/net/ipv6/ip6_vti.c
index 24fb9c0..00111ac 100644 (file)
--- a/net/ipv6/ip6_vti.c
+++ b/net/ipv6/ip6_vti.c
@@ -189,12 +189,12 @@ static int vti6_tnl_create2(struct net_device *dev)
        struct vti6_net *ip6n = net_generic(net, vti6_net_id);
        int err;
 
+       dev->rtnl_link_ops = &vti6_link_ops;
        err = register_netdevice(dev);
        if (err < 0)
                goto out;
 
        strcpy(t->parms.name, dev->name);
-       dev->rtnl_link_ops = &vti6_link_ops;
 
        dev_hold(dev);
        vti6_tnl_link(ip6n, t);
@@ -434,6 +434,7 @@ vti6_xmit(struct sk_buff *skb, struct net_device *dev, struct flowi *fl)
        struct dst_entry *dst = skb_dst(skb);
        struct net_device *tdev;
        struct xfrm_state *x;
+       int pkt_len = skb->len;
        int err = -1;
        int mtu;
 
@@ -473,11 +474,15 @@ vti6_xmit(struct sk_buff *skb, struct net_device *dev, struct flowi *fl)
        if (!skb->ignore_df && skb->len > mtu) {
                skb_dst(skb)->ops->update_pmtu(dst, NULL, skb, mtu);
 
-               if (skb->protocol == htons(ETH_P_IPV6))
+               if (skb->protocol == htons(ETH_P_IPV6)) {
+                       if (mtu < IPV6_MIN_MTU)
+                               mtu = IPV6_MIN_MTU;
+
                        icmpv6_send(skb, ICMPV6_PKT_TOOBIG, 0, mtu);
-               else
+               } else {
                        icmp_send(skb, ICMP_DEST_UNREACH, ICMP_FRAG_NEEDED,
                                  htonl(mtu));
+               }
 
                return -EMSGSIZE;
        }
@@ -487,7 +492,7 @@ vti6_xmit(struct sk_buff *skb, struct net_device *dev, struct flowi *fl)
                struct pcpu_sw_netstats *tstats = this_cpu_ptr(dev->tstats);
 
                u64_stats_update_begin(&tstats->syncp);
-               tstats->tx_bytes += skb->len;
+               tstats->tx_bytes += pkt_len;
                tstats->tx_packets++;
                u64_stats_update_end(&tstats->syncp);
        } else {
@@ -641,7 +646,7 @@ vti6_tnl_change(struct ip6_tnl *t, const struct __ip6_tnl_parm *p)
        t->parms.i_key = p->i_key;
        t->parms.o_key = p->o_key;
        t->parms.proto = p->proto;
-       ip6_tnl_dst_reset(t);
+       dst_cache_reset(&t->dst_cache);
        vti6_link_config(t);
        return 0;
 }
@@ -681,6 +686,10 @@ vti6_parm_to_user(struct ip6_tnl_parm2 *u, const struct __ip6_tnl_parm *p)
        u->link = p->link;
        u->i_key = p->i_key;
        u->o_key = p->o_key;
+       if (u->i_key)
+               u->i_flags |= GRE_KEY;
+       if (u->o_key)
+               u->o_flags |= GRE_KEY;
        u->proto = p->proto;
 
        memcpy(u->name, p->name, sizeof(u->name));