4.4-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Eric Dumazet <[email protected]>

commit 5b975bab23615cd0fdf67af6c9298eb01c4b9f61 upstream.

We want to call inet_frags_init() earlier.

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

Signed-off-by: Eric Dumazet <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
[bwh: Backported to 4.4: Also delete a redundant assignment to
 ip6_frags.skb_free]
Signed-off-by: Ben Hutchings <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
 net/ipv6/reassembly.c |   26 ++++++++++++++------------
 1 file changed, 14 insertions(+), 12 deletions(-)

--- a/net/ipv6/reassembly.c
+++ b/net/ipv6/reassembly.c
@@ -739,10 +739,21 @@ int __init ipv6_frag_init(void)
 {
        int ret;
 
-       ret = inet6_add_protocol(&frag_protocol, IPPROTO_FRAGMENT);
+       ip6_frags.hashfn = ip6_hashfn;
+       ip6_frags.constructor = ip6_frag_init;
+       ip6_frags.destructor = NULL;
+       ip6_frags.qsize = sizeof(struct frag_queue);
+       ip6_frags.match = ip6_frag_match;
+       ip6_frags.frag_expire = ip6_frag_expire;
+       ip6_frags.frags_cache_name = ip6_frag_cache_name;
+       ret = inet_frags_init(&ip6_frags);
        if (ret)
                goto out;
 
+       ret = inet6_add_protocol(&frag_protocol, IPPROTO_FRAGMENT);
+       if (ret)
+               goto err_protocol;
+
        ret = ip6_frags_sysctl_register();
        if (ret)
                goto err_sysctl;
@@ -751,17 +762,6 @@ int __init ipv6_frag_init(void)
        if (ret)
                goto err_pernet;
 
-       ip6_frags.hashfn = ip6_hashfn;
-       ip6_frags.constructor = ip6_frag_init;
-       ip6_frags.destructor = NULL;
-       ip6_frags.skb_free = NULL;
-       ip6_frags.qsize = sizeof(struct frag_queue);
-       ip6_frags.match = ip6_frag_match;
-       ip6_frags.frag_expire = ip6_frag_expire;
-       ip6_frags.frags_cache_name = ip6_frag_cache_name;
-       ret = inet_frags_init(&ip6_frags);
-       if (ret)
-               goto err_pernet;
 out:
        return ret;
 
@@ -769,6 +769,8 @@ err_pernet:
        ip6_frags_sysctl_unregister();
 err_sysctl:
        inet6_del_protocol(&frag_protocol, IPPROTO_FRAGMENT);
+err_protocol:
+       inet_frags_fini(&ip6_frags);
        goto out;
 }
 


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