From: Jason A. Donenfeld Date: Tue, 30 Jun 2020 01:06:23 +0000 (-0600) Subject: net: vti: implement header_ops->parse_protocol for AF_PACKET X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=ab59d2b6982b69a9728296ee3a1f330a72c0383e;p=linux.git net: vti: implement header_ops->parse_protocol for AF_PACKET Vti 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 vti rejects the skb. So, this wires up the ip_tunnel handler for layer 3 packets for that case. Signed-off-by: Jason A. Donenfeld Signed-off-by: David S. Miller --- diff --git a/net/ipv4/ip_vti.c b/net/ipv4/ip_vti.c index 1d9c8cff5ac33..460ca1099e8ac 100644 --- a/net/ipv4/ip_vti.c +++ b/net/ipv4/ip_vti.c @@ -441,6 +441,7 @@ static const struct net_device_ops vti_netdev_ops = { static void vti_tunnel_setup(struct net_device *dev) { dev->netdev_ops = &vti_netdev_ops; + dev->header_ops = &ip_tunnel_header_ops; dev->type = ARPHRD_TUNNEL; ip_tunnel_setup(dev, vti_net_id); } diff --git a/net/ipv6/ip6_vti.c b/net/ipv6/ip6_vti.c index 1147f647b9a0f..0d964160a9dd5 100644 --- a/net/ipv6/ip6_vti.c +++ b/net/ipv6/ip6_vti.c @@ -905,6 +905,7 @@ static const struct net_device_ops vti6_netdev_ops = { static void vti6_dev_setup(struct net_device *dev) { dev->netdev_ops = &vti6_netdev_ops; + dev->header_ops = &ip_tunnel_header_ops; dev->needs_free_netdev = true; dev->priv_destructor = vti6_dev_free;