Determining whether a device is a GRE device is easily done by
inspecting struct net_device.type. However, for the tap variants, the
type is just ARPHRD_ETHER.
Therefore introduce two predicate functions that use netdev_ops to tell
the tap devices.
Signed-off-by: Petr Machata <petrm@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
int gre_parse_header(struct sk_buff *skb, struct tnl_ptk_info *tpi,
bool *csum_err, __be16 proto, int nhs);
+bool is_gretap_dev(const struct net_device *dev);
+bool is_ip6gretap_dev(const struct net_device *dev);
+
static inline int gre_calc_hlen(__be16 o_flags)
{
int addend = 4;
ip_tunnel_setup(dev, gre_tap_net_id);
}
+bool is_gretap_dev(const struct net_device *dev)
+{
+ return dev->netdev_ops == &gre_tap_netdev_ops;
+}
+EXPORT_SYMBOL_GPL(is_gretap_dev);
+
static int ipgre_newlink(struct net *src_net, struct net_device *dev,
struct nlattr *tb[], struct nlattr *data[],
struct netlink_ext_ack *extack)
netif_keep_dst(dev);
}
+bool is_ip6gretap_dev(const struct net_device *dev)
+{
+ return dev->netdev_ops == &ip6gre_tap_netdev_ops;
+}
+EXPORT_SYMBOL_GPL(is_ip6gretap_dev);
+
static bool ip6gre_netlink_encap_parms(struct nlattr *data[],
struct ip_tunnel_encap *ipencap)
{