diff options
author | Petr Machata <petrm@mellanox.com> | 2018-05-17 16:36:39 +0200 |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-05-25 16:46:03 +0200 |
commit | 20e6b7c7e4d8a8046fb4f60f31beefb3f6d52754 (patch) | |
tree | 95cb98450ff417ff09c37b679839aa2198344602 /net | |
parent | cbacae490139ea6d85e073c4d9b782e26e6578d4 (diff) |
net: ip6_gre: Split up ip6gre_newlink()
[ Upstream commit 7fa38a7c852ec99e3a7fc375eb2c21c50c2e46b8 ]
Extract from ip6gre_newlink() a reusable function
ip6gre_newlink_common(). The ip6gre_tnl_link_config() call needs to be
made customizable for ERSPAN, thus reorder it with calls to
ip6_tnl_change_mtu() and dev_hold(), and extract the whole tail to the
caller, ip6gre_newlink(). Thus enable an ERSPAN-specific _newlink()
function without a lot of duplicity.
Fixes: 5a963eb61b7c ("ip6_gre: Add ERSPAN native tunnel support")
Signed-off-by: Petr Machata <petrm@mellanox.com>
Acked-by: William Tu <u9012063@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'net')
-rw-r--r-- | net/ipv6/ip6_gre.c | 24 |
1 files changed, 18 insertions, 6 deletions
diff --git a/net/ipv6/ip6_gre.c b/net/ipv6/ip6_gre.c index 892858af139a..9a0b662b0087 100644 --- a/net/ipv6/ip6_gre.c +++ b/net/ipv6/ip6_gre.c @@ -1848,9 +1848,9 @@ static bool ip6gre_netlink_encap_parms(struct nlattr *data[], return ret; } -static int ip6gre_newlink(struct net *src_net, struct net_device *dev, - struct nlattr *tb[], struct nlattr *data[], - struct netlink_ext_ack *extack) +static int ip6gre_newlink_common(struct net *src_net, struct net_device *dev, + struct nlattr *tb[], struct nlattr *data[], + struct netlink_ext_ack *extack) { struct ip6_tnl *nt; struct net *net = dev_net(dev); @@ -1887,18 +1887,30 @@ static int ip6gre_newlink(struct net *src_net, struct net_device *dev, if (err) goto out; - ip6gre_tnl_link_config(nt, !tb[IFLA_MTU]); - if (tb[IFLA_MTU]) ip6_tnl_change_mtu(dev, nla_get_u32(tb[IFLA_MTU])); dev_hold(dev); - ip6gre_tunnel_link(ign, nt); out: return err; } +static int ip6gre_newlink(struct net *src_net, struct net_device *dev, + struct nlattr *tb[], struct nlattr *data[], + struct netlink_ext_ack *extack) +{ + int err = ip6gre_newlink_common(src_net, dev, tb, data, extack); + struct ip6_tnl *nt = netdev_priv(dev); + struct net *net = dev_net(dev); + + if (!err) { + ip6gre_tnl_link_config(nt, !tb[IFLA_MTU]); + ip6gre_tunnel_link(net_generic(net, ip6gre_net_id), nt); + } + return err; +} + static int ip6gre_changelink(struct net_device *dev, struct nlattr *tb[], struct nlattr *data[], struct netlink_ext_ack *extack) |