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authorJason A. Donenfeld <Jason@zx2c4.com>2020-06-29 19:06:25 -0600
committerDavid S. Miller <davem@davemloft.net>2020-06-30 12:29:39 -0700
commit8f9a1fa4308363944ba94a961f69646c4b0ff26b (patch)
treeb208f21f9d66e179bf519fbd98b70af99a9760d1 /net/xfrm
parent75ea1f4773c09730bf8a364a367f6e7211484e12 (diff)
downloadlinux-8f9a1fa4308363944ba94a961f69646c4b0ff26b.tar.bz2
net: xfrmi: implement header_ops->parse_protocol for AF_PACKET
The xfrm interface 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 xfrmi 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/xfrm')
-rw-r--r--net/xfrm/xfrm_interface.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/net/xfrm/xfrm_interface.c b/net/xfrm/xfrm_interface.c
index c407ecbc5d46..b615729812e5 100644
--- a/net/xfrm/xfrm_interface.c
+++ b/net/xfrm/xfrm_interface.c
@@ -37,6 +37,7 @@
#include <net/ip.h>
#include <net/ipv6.h>
#include <net/ip6_route.h>
+#include <net/ip_tunnels.h>
#include <net/addrconf.h>
#include <net/xfrm.h>
#include <net/net_namespace.h>
@@ -581,6 +582,7 @@ static const struct net_device_ops xfrmi_netdev_ops = {
static void xfrmi_dev_setup(struct net_device *dev)
{
dev->netdev_ops = &xfrmi_netdev_ops;
+ dev->header_ops = &ip_tunnel_header_ops;
dev->type = ARPHRD_NONE;
dev->mtu = ETH_DATA_LEN;
dev->min_mtu = ETH_MIN_MTU;