From: Jason A. Donenfeld Date: Tue, 30 Jun 2020 01:06:19 +0000 (-0600) Subject: net: ipip: implement header_ops->parse_protocol for AF_PACKET X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=e53ac93220e002fdf26b2874af6a74f393cd3872;p=linux.git 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 Acked-by: Willem de Bruijn Signed-off-by: David S. Miller --- diff --git a/net/ipv4/ipip.c b/net/ipv4/ipip.c index 40fea52c82773..75d35e76bec2c 100644 --- a/net/ipv4/ipip.c +++ b/net/ipv4/ipip.c @@ -361,6 +361,7 @@ static const struct net_device_ops ipip_netdev_ops = { static void ipip_tunnel_setup(struct net_device *dev) { dev->netdev_ops = &ipip_netdev_ops; + dev->header_ops = &ip_tunnel_header_ops; dev->type = ARPHRD_TUNNEL; dev->flags = IFF_NOARP; diff --git a/net/ipv6/ip6_tunnel.c b/net/ipv6/ip6_tunnel.c index 821d96c720b93..a18c378ca5f46 100644 --- a/net/ipv6/ip6_tunnel.c +++ b/net/ipv6/ip6_tunnel.c @@ -1846,6 +1846,7 @@ static const struct net_device_ops ip6_tnl_netdev_ops = { static void ip6_tnl_dev_setup(struct net_device *dev) { dev->netdev_ops = &ip6_tnl_netdev_ops; + dev->header_ops = &ip_tunnel_header_ops; dev->needs_free_netdev = true; dev->priv_destructor = ip6_dev_free;