inet: frags: refactor ipv6_frag_init()

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 <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
(cherry picked from commit 5b975bab23615cd0fdf67af6c9298eb01c4b9f61)
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/net/ipv6/reassembly.c b/net/ipv6/reassembly.c
index 436e6d5..9440bb9 100644 (file)
--- a/net/ipv6/reassembly.c
+++ b/net/ipv6/reassembly.c
@@ -740,10 +740,21 @@ 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;
@@ -752,16 +763,6 @@ 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.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 +770,8 @@ err_pernet:
        ip6_frags_sysctl_unregister();
 err_sysctl:
        inet6_del_protocol(&frag_protocol, IPPROTO_FRAGMENT);
+err_protocol:
+       inet_frags_fini(&ip6_frags);
        goto out;
 }