[PATCH stable 4.9 05/29] inet: frags: refactor lowpan_net_frag_init()

[Florian Fainelli]

From: Eric Dumazet <eduma...@google.com>

We want to call lowpan_net_frag_init() earlier.
Similar to commit "inet: frags: refactor ipv6_frag_init()"

This is a prereq to "inet: frags: use rhashtables for reassembly units"

Signed-off-by: Eric Dumazet <eduma...@google.com>
Signed-off-by: David S. Miller <da...@davemloft.net>
(cherry picked from commit 807f1844df4ac23594268fa9f41902d0549e92aa)
---
 net/ieee802154/6lowpan/reassembly.c | 20 +++++++++++---------
 1 file changed, 11 insertions(+), 9 deletions(-)

diff --git a/net/ieee802154/6lowpan/reassembly.c 
b/net/ieee802154/6lowpan/reassembly.c
index 9ccb8458b5c3..977b4ed58112 100644
--- a/net/ieee802154/6lowpan/reassembly.c
+++ b/net/ieee802154/6lowpan/reassembly.c
@@ -614,14 +614,6 @@ int __init lowpan_net_frag_init(void)
 {
        int ret;
 
-       ret = lowpan_frags_sysctl_register();
-       if (ret)
-               return ret;
-
-       ret = register_pernet_subsys(&lowpan_frags_ops);
-       if (ret)
-               goto err_pernet;
-
        lowpan_frags.hashfn = lowpan_hashfn;
        lowpan_frags.constructor = lowpan_frag_init;
        lowpan_frags.destructor = NULL;
@@ -631,11 +623,21 @@ int __init lowpan_net_frag_init(void)
        lowpan_frags.frags_cache_name = lowpan_frags_cache_name;
        ret = inet_frags_init(&lowpan_frags);
        if (ret)
-               goto err_pernet;
+               goto out;
 
+       ret = lowpan_frags_sysctl_register();
+       if (ret)
+               goto err_sysctl;
+
+       ret = register_pernet_subsys(&lowpan_frags_ops);
+       if (ret)
+               goto err_pernet;
+out:
        return ret;
 err_pernet:
        lowpan_frags_sysctl_unregister();
+err_sysctl:
+       inet_frags_fini(&lowpan_frags);
        return ret;
 }
 
-- 
2.17.1