diff options
| author | Jason A. Donenfeld <Jason@zx2c4.com> | 2020-06-29 19:06:20 -0600 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-06-30 12:29:39 -0700 |
| commit | 01a4967c71c004f8ecad4ab57021348636502fa9 (patch) | |
| tree | 03fe34fb130f509213d970ddc1efc32e7000707e | |
| parent | e53ac93220e002fdf26b2874af6a74f393cd3872 (diff) | |
| download | linux-01a4967c71c004f8ecad4ab57021348636502fa9.tar.bz2 | |
wireguard: implement header_ops->parse_protocol for AF_PACKET
WireGuard uses skb->protocol to determine packet type, and bails out if
it's not set or set to something it's not expecting. 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 wireguard then
rejects the skb. So, this wires up the ip_tunnel handler for layer 3
packets for that case.
Reported-by: Hans Wippel <ndev@hwipl.net>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | drivers/net/wireguard/device.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/net/wireguard/device.c b/drivers/net/wireguard/device.c index a8f151b1b5fa..c9f65e96ccb0 100644 --- a/drivers/net/wireguard/device.c +++ b/drivers/net/wireguard/device.c @@ -262,6 +262,7 @@ static void wg_setup(struct net_device *dev) max(sizeof(struct ipv6hdr), sizeof(struct iphdr)); dev->netdev_ops = &netdev_ops; + dev->header_ops = &ip_tunnel_header_ops; dev->hard_header_len = 0; dev->addr_len = 0; dev->needed_headroom = DATA_PACKET_HEAD_ROOM; |