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net: ipip: implement header_ops->parse_protocol for AF_PACKET
Ipip uses skb->protocol to determine packet type, and bails out if it's not set. For AF_PACKET injection, we need to support its call chain of: packet_sendmsg -> packet_snd -> packet_parse_headers -> dev_parse_header_protocol -> parse_protocol Without a valid parse_protocol, this returns zero, and ipip rejects the skb. So, this wires up the ip_tunnel handler for layer 3 packets for that case. Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> Acked-by: Willem de Bruijn <willemb@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -361,6 +361,7 @@ static const struct net_device_ops ipip_netdev_ops = {
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static void ipip_tunnel_setup(struct net_device *dev)
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{
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dev->netdev_ops = &ipip_netdev_ops;
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dev->header_ops = &ip_tunnel_header_ops;
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dev->type = ARPHRD_TUNNEL;
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dev->flags = IFF_NOARP;
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@ -1846,6 +1846,7 @@ static const struct net_device_ops ip6_tnl_netdev_ops = {
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static void ip6_tnl_dev_setup(struct net_device *dev)
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{
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dev->netdev_ops = &ip6_tnl_netdev_ops;
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dev->header_ops = &ip_tunnel_header_ops;
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dev->needs_free_netdev = true;
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dev->priv_destructor = ip6_dev_free;
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