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| author | Jason A. Donenfeld <Jason@zx2c4.com> | 2020-06-29 19:06:24 -0600 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-06-30 12:29:39 -0700 |
| commit | 75ea1f4773c09730bf8a364a367f6e7211484e12 (patch) | |
| tree | a8a50343405ae6fc2a9b0d297487d06e69191b69 /net/ipv6 | |
| parent | ab59d2b6982b69a9728296ee3a1f330a72c0383e (diff) | |
| download | linux-75ea1f4773c09730bf8a364a367f6e7211484e12.tar.bz2 | |
net: sit: implement header_ops->parse_protocol for AF_PACKET
Sit 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 sit rejects the
skb. So, this wires up the ip_tunnel handler for layer 3 packets for
that case.
Reported-by: Willem de Bruijn <willemdebruijn.kernel@gmail.com>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6')
| -rw-r--r-- | net/ipv6/sit.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/net/ipv6/sit.c b/net/ipv6/sit.c index 1fbb4dfbb191..5e2c34c0ac97 100644 --- a/net/ipv6/sit.c +++ b/net/ipv6/sit.c @@ -1421,6 +1421,7 @@ static void ipip6_tunnel_setup(struct net_device *dev) int t_hlen = tunnel->hlen + sizeof(struct iphdr); dev->netdev_ops = &ipip6_netdev_ops; + dev->header_ops = &ip_tunnel_header_ops; dev->needs_free_netdev = true; dev->priv_destructor = ipip6_dev_free; |