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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/ipv4/ip_gre.c | |
| parent | 8897207c89156a5d05dc5bf1a80dede21e768f0a (diff) | |
| download | linux-d1b2a6c4bed99fc7e8a11e7abcff19293d1974f5.tar.bz2 | |
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/ipv4/ip_gre.c')
| -rw-r--r-- | net/ipv4/ip_gre.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/net/ipv4/ip_gre.c b/net/ipv4/ip_gre.c index e496afa47709..0fe1d69b5df4 100644 --- a/net/ipv4/ip_gre.c +++ b/net/ipv4/ip_gre.c @@ -1323,6 +1323,12 @@ static void ipgre_tap_setup(struct net_device *dev) 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) |