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| author | Petr Machata <petrm@mellanox.com> | 2018-02-27 14:53:37 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-02-27 14:46:26 -0500 |
| commit | d1b2a6c4bed99fc7e8a11e7abcff19293d1974f5 (patch) | |
| tree | a4a2f0485cb162342716264dd064e49b3c34bbf3 /net/ipv6/ip6_gre.c | |
| parent | 8897207c89156a5d05dc5bf1a80dede21e768f0a (diff) | |
| download | linux-d1b2a6c4bed99fc7e8a11e7abcff19293d1974f5.tar.gz | |
net: GRE: Add is_gretap_dev, is_ip6gretap_dev
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>
Diffstat (limited to 'net/ipv6/ip6_gre.c')
| -rw-r--r-- | net/ipv6/ip6_gre.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/net/ipv6/ip6_gre.c b/net/ipv6/ip6_gre.c index 3026662a6413..4f150a394387 100644 --- a/net/ipv6/ip6_gre.c +++ b/net/ipv6/ip6_gre.c @@ -1785,6 +1785,12 @@ static void ip6gre_tap_setup(struct net_device *dev) 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) { |