diff options
Diffstat (limited to 'net/ipv4/ip_gre.c')
| -rw-r--r-- | net/ipv4/ip_gre.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/net/ipv4/ip_gre.c b/net/ipv4/ip_gre.c index fd4d6e96da7e..b61f2285816d 100644 --- a/net/ipv4/ip_gre.c +++ b/net/ipv4/ip_gre.c @@ -313,9 +313,6 @@ static int erspan_rcv(struct sk_buff *skb, struct tnl_ptk_info *tpi, return PACKET_REJECT; md = ip_tunnel_info_opts(&tun_dst->u.tun_info); - if (!md) - return PACKET_REJECT; - memcpy(md, pkt_md, sizeof(*md)); md->version = ver; @@ -434,11 +431,13 @@ static int gre_rcv(struct sk_buff *skb) tpi.proto == htons(ETH_P_ERSPAN2))) { if (erspan_rcv(skb, &tpi, hdr_len) == PACKET_RCVD) return 0; + goto out; } if (ipgre_rcv(skb, &tpi, hdr_len) == PACKET_RCVD) return 0; +out: icmp_send(skb, ICMP_DEST_UNREACH, ICMP_PORT_UNREACH, 0); drop: kfree_skb(skb); @@ -1332,6 +1331,7 @@ static const struct net_device_ops erspan_netdev_ops = { static void ipgre_tap_setup(struct net_device *dev) { ether_setup(dev); + dev->max_mtu = 0; dev->netdev_ops = &gre_tap_netdev_ops; dev->priv_flags &= ~IFF_TX_SKB_SHARING; dev->priv_flags |= IFF_LIVE_ADDR_CHANGE; |