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Diffstat (limited to 'net/ipv6/ip6_gre.c')
-rw-r--r--net/ipv6/ip6_gre.c6
1 files changed, 2 insertions, 4 deletions
diff --git a/net/ipv6/ip6_gre.c b/net/ipv6/ip6_gre.c
index 7bb5446b9d73..bf4a9a084de5 100644
--- a/net/ipv6/ip6_gre.c
+++ b/net/ipv6/ip6_gre.c
@@ -976,6 +976,7 @@ static void ip6gre_tnl_link_config(struct ip6_tnl *t, int set_mtu)
976 if (t->parms.o_flags&GRE_SEQ) 976 if (t->parms.o_flags&GRE_SEQ)
977 addend += 4; 977 addend += 4;
978 } 978 }
979 t->hlen = addend;
979 980
980 if (p->flags & IP6_TNL_F_CAP_XMIT) { 981 if (p->flags & IP6_TNL_F_CAP_XMIT) {
981 int strict = (ipv6_addr_type(&p->raddr) & 982 int strict = (ipv6_addr_type(&p->raddr) &
@@ -1002,8 +1003,6 @@ static void ip6gre_tnl_link_config(struct ip6_tnl *t, int set_mtu)
1002 } 1003 }
1003 ip6_rt_put(rt); 1004 ip6_rt_put(rt);
1004 } 1005 }
1005
1006 t->hlen = addend;
1007} 1006}
1008 1007
1009static int ip6gre_tnl_change(struct ip6_tnl *t, 1008static int ip6gre_tnl_change(struct ip6_tnl *t,
@@ -1173,9 +1172,8 @@ done:
1173 1172
1174static int ip6gre_tunnel_change_mtu(struct net_device *dev, int new_mtu) 1173static int ip6gre_tunnel_change_mtu(struct net_device *dev, int new_mtu)
1175{ 1174{
1176 struct ip6_tnl *tunnel = netdev_priv(dev);
1177 if (new_mtu < 68 || 1175 if (new_mtu < 68 ||
1178 new_mtu > 0xFFF8 - dev->hard_header_len - tunnel->hlen) 1176 new_mtu > 0xFFF8 - dev->hard_header_len)
1179 return -EINVAL; 1177 return -EINVAL;
1180 dev->mtu = new_mtu; 1178 dev->mtu = new_mtu;
1181 return 0; 1179 return 0;