1 files changed, 192 insertions, 106 deletions

diff --git a/net/ipv6/ip6_fib.c b/net/ipv6/ip6_fib.c
index bab72b6f1444..50f3f8f8a59b 100644
--- a/net/ipv6/ip6_fib.c
+++ b/net/ipv6/ip6_fib.c
@@ -48,8 +48,6 @@
 #define RT6_TRACE(x...) do { ; } while (0)
 #endif
 
-struct rt6_statistics   rt6_stats;
-
 static struct kmem_cache * fib6_node_kmem __read_mostly;
 
 enum fib_walk_state_t
@@ -66,6 +64,7 @@ enum fib_walk_state_t
 struct fib6_cleaner_t
 {
         struct fib6_walker_t w;
+        struct net *net;
         int (*func)(struct rt6_info *, void *arg);
         void *arg;
 };
@@ -78,9 +77,10 @@ static DEFINE_RWLOCK(fib6_walker_lock);
 #define FWS_INIT FWS_L
 #endif
 
-static void fib6_prune_clones(struct fib6_node *fn, struct rt6_info *rt);
-static struct rt6_info * fib6_find_prefix(struct fib6_node *fn);
-static struct fib6_node * fib6_repair_tree(struct fib6_node *fn);
+static void fib6_prune_clones(struct net *net, struct fib6_node *fn,
+                              struct rt6_info *rt);
+static struct rt6_info *fib6_find_prefix(struct net *net, struct fib6_node *fn);
+static struct fib6_node *fib6_repair_tree(struct net *net, struct fib6_node *fn);
 static int fib6_walk(struct fib6_walker_t *w);
 static int fib6_walk_continue(struct fib6_walker_t *w);
 
@@ -93,7 +93,7 @@ static int fib6_walk_continue(struct fib6_walker_t *w);
 
 static __u32 rt_sernum;
 
-static DEFINE_TIMER(ip6_fib_timer, fib6_run_gc, 0, 0);
+static void fib6_gc_timer_cb(unsigned long arg);
 
 static struct fib6_walker_t fib6_walker_list = {
         .prev   = &fib6_walker_list,
@@ -166,22 +166,13 @@ static __inline__ void rt6_release(struct rt6_info *rt)
                 dst_free(&rt->u.dst);
 }
 
-static struct fib6_table fib6_main_tbl = {
-        .tb6_id         = RT6_TABLE_MAIN,
-        .tb6_root       = {
-                .leaf           = &ip6_null_entry,
-                .fn_flags       = RTN_ROOT | RTN_TL_ROOT | RTN_RTINFO,
-        },
-};
-
 #ifdef CONFIG_IPV6_MULTIPLE_TABLES
 #define FIB_TABLE_HASHSZ 256
 #else
 #define FIB_TABLE_HASHSZ 1
 #endif
-static struct hlist_head fib_table_hash[FIB_TABLE_HASHSZ];
 
-static void fib6_link_table(struct fib6_table *tb)
+static void fib6_link_table(struct net *net, struct fib6_table *tb)
 {
         unsigned int h;
 
@@ -197,52 +188,46 @@ static void fib6_link_table(struct fib6_table *tb)
          * No protection necessary, this is the only list mutatation
          * operation, tables never disappear once they exist.
          */
-        hlist_add_head_rcu(&tb->tb6_hlist, &fib_table_hash[h]);
+        hlist_add_head_rcu(&tb->tb6_hlist, &net->ipv6.fib_table_hash[h]);
 }
 
 #ifdef CONFIG_IPV6_MULTIPLE_TABLES
-static struct fib6_table fib6_local_tbl = {
-        .tb6_id         = RT6_TABLE_LOCAL,
-        .tb6_root       = {
-                .leaf           = &ip6_null_entry,
-                .fn_flags       = RTN_ROOT | RTN_TL_ROOT | RTN_RTINFO,
-        },
-};
 
-static struct fib6_table *fib6_alloc_table(u32 id)
+static struct fib6_table *fib6_alloc_table(struct net *net, u32 id)
 {
         struct fib6_table *table;
 
         table = kzalloc(sizeof(*table), GFP_ATOMIC);
         if (table != NULL) {
                 table->tb6_id = id;
-                table->tb6_root.leaf = &ip6_null_entry;
+                table->tb6_root.leaf = net->ipv6.ip6_null_entry;
                 table->tb6_root.fn_flags = RTN_ROOT | RTN_TL_ROOT | RTN_RTINFO;
         }
 
         return table;
 }
 
-struct fib6_table *fib6_new_table(u32 id)
+struct fib6_table *fib6_new_table(struct net *net, u32 id)
 {
         struct fib6_table *tb;
 
         if (id == 0)
                 id = RT6_TABLE_MAIN;
-        tb = fib6_get_table(id);
+        tb = fib6_get_table(net, id);
         if (tb)
                 return tb;
 
-        tb = fib6_alloc_table(id);
+        tb = fib6_alloc_table(net, id);
         if (tb != NULL)
-                fib6_link_table(tb);
+                fib6_link_table(net, tb);
 
         return tb;
 }
 
-struct fib6_table *fib6_get_table(u32 id)
+struct fib6_table *fib6_get_table(struct net *net, u32 id)
 {
         struct fib6_table *tb;
+        struct hlist_head *head;
         struct hlist_node *node;
         unsigned int h;
 
@@ -250,7 +235,8 @@ struct fib6_table *fib6_get_table(u32 id)
                 id = RT6_TABLE_MAIN;
         h = id & (FIB_TABLE_HASHSZ - 1);
         rcu_read_lock();
-        hlist_for_each_entry_rcu(tb, node, &fib_table_hash[h], tb6_hlist) {
+        head = &net->ipv6.fib_table_hash[h];
+        hlist_for_each_entry_rcu(tb, node, head, tb6_hlist) {
                 if (tb->tb6_id == id) {
                         rcu_read_unlock();
                         return tb;
@@ -261,33 +247,32 @@ struct fib6_table *fib6_get_table(u32 id)
         return NULL;
 }
 
-static void __init fib6_tables_init(void)
+static void fib6_tables_init(struct net *net)
 {
-        fib6_link_table(&fib6_main_tbl);
-        fib6_link_table(&fib6_local_tbl);
+        fib6_link_table(net, net->ipv6.fib6_main_tbl);
+        fib6_link_table(net, net->ipv6.fib6_local_tbl);
 }
-
 #else
 
-struct fib6_table *fib6_new_table(u32 id)
+struct fib6_table *fib6_new_table(struct net *net, u32 id)
 {
-        return fib6_get_table(id);
+        return fib6_get_table(net, id);
 }
 
-struct fib6_table *fib6_get_table(u32 id)
+struct fib6_table *fib6_get_table(struct net *net, u32 id)
 {
-        return &fib6_main_tbl;
+          return net->ipv6.fib6_main_tbl;
 }
 
-struct dst_entry *fib6_rule_lookup(struct flowi *fl, int flags,
-                                   pol_lookup_t lookup)
+struct dst_entry *fib6_rule_lookup(struct net *net, struct flowi *fl,
+                                   int flags, pol_lookup_t lookup)
 {
-        return (struct dst_entry *) lookup(&fib6_main_tbl, fl, flags);
+        return (struct dst_entry *) lookup(net, net->ipv6.fib6_main_tbl, fl, flags);
 }
 
-static void __init fib6_tables_init(void)
+static void fib6_tables_init(struct net *net)
 {
-        fib6_link_table(&fib6_main_tbl);
+        fib6_link_table(net, net->ipv6.fib6_main_tbl);
 }
 
 #endif
@@ -361,18 +346,16 @@ end:
 
 static int inet6_dump_fib(struct sk_buff *skb, struct netlink_callback *cb)
 {
-        struct net *net = skb->sk->sk_net;
+        struct net *net = sock_net(skb->sk);
         unsigned int h, s_h;
         unsigned int e = 0, s_e;
         struct rt6_rtnl_dump_arg arg;
         struct fib6_walker_t *w;
         struct fib6_table *tb;
         struct hlist_node *node;
+        struct hlist_head *head;
         int res = 0;
 
-        if (net != &init_net)
-                return 0;
-
         s_h = cb->args[0];
         s_e = cb->args[1];
 
@@ -401,7 +384,8 @@ static int inet6_dump_fib(struct sk_buff *skb, struct netlink_callback *cb)
 
         for (h = s_h; h < FIB_TABLE_HASHSZ; h++, s_e = 0) {
                 e = 0;
-                hlist_for_each_entry(tb, node, &fib_table_hash[h], tb6_hlist) {
+                head = &net->ipv6.fib_table_hash[h];
+                hlist_for_each_entry(tb, node, head, tb6_hlist) {
                         if (e < s_e)
                                 goto next;
                         res = fib6_dump_table(tb, skb, cb);
@@ -667,29 +651,29 @@ static int fib6_add_rt2node(struct fib6_node *fn, struct rt6_info *rt,
         rt->rt6i_node = fn;
         atomic_inc(&rt->rt6i_ref);
         inet6_rt_notify(RTM_NEWROUTE, rt, info);
-        rt6_stats.fib_rt_entries++;
+        info->nl_net->ipv6.rt6_stats->fib_rt_entries++;
 
         if ((fn->fn_flags & RTN_RTINFO) == 0) {
-                rt6_stats.fib_route_nodes++;
+                info->nl_net->ipv6.rt6_stats->fib_route_nodes++;
                 fn->fn_flags |= RTN_RTINFO;
         }
 
         return 0;
 }
 
-static __inline__ void fib6_start_gc(struct rt6_info *rt)
+static __inline__ void fib6_start_gc(struct net *net, struct rt6_info *rt)
 {
-        if (ip6_fib_timer.expires == 0 &&
+        if (net->ipv6.ip6_fib_timer->expires == 0 &&
             (rt->rt6i_flags & (RTF_EXPIRES|RTF_CACHE)))
-                mod_timer(&ip6_fib_timer, jiffies +
-                          init_net.ipv6.sysctl.ip6_rt_gc_interval);
+                mod_timer(net->ipv6.ip6_fib_timer, jiffies +
+                          net->ipv6.sysctl.ip6_rt_gc_interval);
 }
 
-void fib6_force_start_gc(void)
+void fib6_force_start_gc(struct net *net)
 {
-        if (ip6_fib_timer.expires == 0)
-                mod_timer(&ip6_fib_timer, jiffies +
-                          init_net.ipv6.sysctl.ip6_rt_gc_interval);
+        if (net->ipv6.ip6_fib_timer->expires == 0)
+                mod_timer(net->ipv6.ip6_fib_timer, jiffies +
+                          net->ipv6.sysctl.ip6_rt_gc_interval);
 }
 
 /*
@@ -733,8 +717,8 @@ int fib6_add(struct fib6_node *root, struct rt6_info *rt, struct nl_info *info)
                         if (sfn == NULL)
                                 goto st_failure;
 
-                        sfn->leaf = &ip6_null_entry;
-                        atomic_inc(&ip6_null_entry.rt6i_ref);
+                        sfn->leaf = info->nl_net->ipv6.ip6_null_entry;
+                        atomic_inc(&info->nl_net->ipv6.ip6_null_entry->rt6i_ref);
                         sfn->fn_flags = RTN_ROOT;
                         sfn->fn_sernum = fib6_new_sernum();
 
@@ -776,9 +760,9 @@ int fib6_add(struct fib6_node *root, struct rt6_info *rt, struct nl_info *info)
         err = fib6_add_rt2node(fn, rt, info);
 
         if (err == 0) {
-                fib6_start_gc(rt);
+                fib6_start_gc(info->nl_net, rt);
                 if (!(rt->rt6i_flags&RTF_CACHE))
-                        fib6_prune_clones(pn, rt);
+                        fib6_prune_clones(info->nl_net, pn, rt);
         }
 
 out:
@@ -788,12 +772,16 @@ out:
                  * If fib6_add_1 has cleared the old leaf pointer in the
                  * super-tree leaf node we have to find a new one for it.
                  */
+                if (pn != fn && pn->leaf == rt) {
+                        pn->leaf = NULL;
+                        atomic_dec(&rt->rt6i_ref);
+                }
                 if (pn != fn && !pn->leaf && !(pn->fn_flags & RTN_RTINFO)) {
-                        pn->leaf = fib6_find_prefix(pn);
+                        pn->leaf = fib6_find_prefix(info->nl_net, pn);
 #if RT6_DEBUG >= 2
                         if (!pn->leaf) {
                                 BUG_TRAP(pn->leaf != NULL);
-                                pn->leaf = &ip6_null_entry;
+                                pn->leaf = info->nl_net->ipv6.ip6_null_entry;
                         }
 #endif
                         atomic_inc(&pn->leaf->rt6i_ref);
@@ -809,7 +797,7 @@ out:
          */
 st_failure:
         if (fn && !(fn->fn_flags & (RTN_RTINFO|RTN_ROOT)))
-                fib6_repair_tree(fn);
+                fib6_repair_tree(info->nl_net, fn);
         dst_free(&rt->u.dst);
         return err;
 #endif
@@ -975,10 +963,10 @@ struct fib6_node * fib6_locate(struct fib6_node *root,
  *
  */
 
-static struct rt6_info * fib6_find_prefix(struct fib6_node *fn)
+static struct rt6_info *fib6_find_prefix(struct net *net, struct fib6_node *fn)
 {
         if (fn->fn_flags&RTN_ROOT)
-                return &ip6_null_entry;
+                return net->ipv6.ip6_null_entry;
 
         while(fn) {
                 if(fn->left)
@@ -997,7 +985,8 @@ static struct rt6_info * fib6_find_prefix(struct fib6_node *fn)
  *      is the node we want to try and remove.
  */
 
-static struct fib6_node * fib6_repair_tree(struct fib6_node *fn)
+static struct fib6_node *fib6_repair_tree(struct net *net,
+                                           struct fib6_node *fn)
 {
         int children;
         int nstate;
@@ -1024,11 +1013,11 @@ static struct fib6_node * fib6_repair_tree(struct fib6_node *fn)
                     || (children && fn->fn_flags&RTN_ROOT)
 #endif
                     ) {
-                        fn->leaf = fib6_find_prefix(fn);
+                        fn->leaf = fib6_find_prefix(net, fn);
 #if RT6_DEBUG >= 2
                         if (fn->leaf==NULL) {
                                 BUG_TRAP(fn->leaf);
-                                fn->leaf = &ip6_null_entry;
+                                fn->leaf = net->ipv6.ip6_null_entry;
                         }
 #endif
                         atomic_inc(&fn->leaf->rt6i_ref);
@@ -1101,14 +1090,15 @@ static void fib6_del_route(struct fib6_node *fn, struct rt6_info **rtp,
 {
         struct fib6_walker_t *w;
         struct rt6_info *rt = *rtp;
+        struct net *net = info->nl_net;
 
         RT6_TRACE("fib6_del_route\n");
 
         /* Unlink it */
         *rtp = rt->u.dst.rt6_next;
         rt->rt6i_node = NULL;
-        rt6_stats.fib_rt_entries--;
-        rt6_stats.fib_discarded_routes++;
+        net->ipv6.rt6_stats->fib_rt_entries--;
+        net->ipv6.rt6_stats->fib_discarded_routes++;
 
         /* Reset round-robin state, if necessary */
         if (fn->rr_ptr == rt)
@@ -1131,8 +1121,8 @@ static void fib6_del_route(struct fib6_node *fn, struct rt6_info **rtp,
         /* If it was last route, expunge its radix tree node */
         if (fn->leaf == NULL) {
                 fn->fn_flags &= ~RTN_RTINFO;
-                rt6_stats.fib_route_nodes--;
-                fn = fib6_repair_tree(fn);
+                net->ipv6.rt6_stats->fib_route_nodes--;
+                fn = fib6_repair_tree(net, fn);
         }
 
         if (atomic_read(&rt->rt6i_ref) != 1) {
@@ -1144,7 +1134,7 @@ static void fib6_del_route(struct fib6_node *fn, struct rt6_info **rtp,
                  */
                 while (fn) {
                         if (!(fn->fn_flags&RTN_RTINFO) && fn->leaf == rt) {
-                                fn->leaf = fib6_find_prefix(fn);
+                                fn->leaf = fib6_find_prefix(net, fn);
                                 atomic_inc(&fn->leaf->rt6i_ref);
                                 rt6_release(rt);
                         }
@@ -1160,6 +1150,7 @@ static void fib6_del_route(struct fib6_node *fn, struct rt6_info **rtp,
 
 int fib6_del(struct rt6_info *rt, struct nl_info *info)
 {
+        struct net *net = info->nl_net;
         struct fib6_node *fn = rt->rt6i_node;
         struct rt6_info **rtp;
 
@@ -1169,7 +1160,7 @@ int fib6_del(struct rt6_info *rt, struct nl_info *info)
                 return -ENOENT;
         }
 #endif
-        if (fn == NULL || rt == &ip6_null_entry)
+        if (fn == NULL || rt == net->ipv6.ip6_null_entry)
                 return -ENOENT;
 
         BUG_TRAP(fn->fn_flags&RTN_RTINFO);
@@ -1184,7 +1175,7 @@ int fib6_del(struct rt6_info *rt, struct nl_info *info)
                         pn = pn->parent;
                 }
 #endif
-                fib6_prune_clones(pn, rt);
+                fib6_prune_clones(info->nl_net, pn, rt);
         }
 
         /*
@@ -1314,12 +1305,12 @@ static int fib6_walk(struct fib6_walker_t *w)
 
 static int fib6_clean_node(struct fib6_walker_t *w)
 {
-        struct nl_info info = {
-                .nl_net = &init_net,
-        };
         int res;
         struct rt6_info *rt;
         struct fib6_cleaner_t *c = container_of(w, struct fib6_cleaner_t, w);
+        struct nl_info info = {
+                .nl_net = c->net,
+        };
 
         for (rt = w->leaf; rt; rt = rt->u.dst.rt6_next) {
                 res = c->func(rt, c->arg);
@@ -1351,7 +1342,7 @@ static int fib6_clean_node(struct fib6_walker_t *w)
  *      ignoring pure split nodes) will be scanned.
  */
 
-static void fib6_clean_tree(struct fib6_node *root,
+static void fib6_clean_tree(struct net *net, struct fib6_node *root,
                             int (*func)(struct rt6_info *, void *arg),
                             int prune, void *arg)
 {
@@ -1362,23 +1353,26 @@ static void fib6_clean_tree(struct fib6_node *root,
         c.w.prune = prune;
         c.func = func;
         c.arg = arg;
+        c.net = net;
 
         fib6_walk(&c.w);
 }
 
-void fib6_clean_all(int (*func)(struct rt6_info *, void *arg),
+void fib6_clean_all(struct net *net, int (*func)(struct rt6_info *, void *arg),
                     int prune, void *arg)
 {
         struct fib6_table *table;
         struct hlist_node *node;
+        struct hlist_head *head;
         unsigned int h;
 
         rcu_read_lock();
         for (h = 0; h < FIB_TABLE_HASHSZ; h++) {
-                hlist_for_each_entry_rcu(table, node, &fib_table_hash[h],
-                                         tb6_hlist) {
+                head = &net->ipv6.fib_table_hash[h];
+                hlist_for_each_entry_rcu(table, node, head, tb6_hlist) {
                         write_lock_bh(&table->tb6_lock);
-                        fib6_clean_tree(&table->tb6_root, func, prune, arg);
+                        fib6_clean_tree(net, &table->tb6_root,
+                                        func, prune, arg);
                         write_unlock_bh(&table->tb6_lock);
                 }
         }
@@ -1395,9 +1389,10 @@ static int fib6_prune_clone(struct rt6_info *rt, void *arg)
         return 0;
 }
 
-static void fib6_prune_clones(struct fib6_node *fn, struct rt6_info *rt)
+static void fib6_prune_clones(struct net *net, struct fib6_node *fn,
+                              struct rt6_info *rt)
 {
-        fib6_clean_tree(fn, fib6_prune_clone, 1, rt);
+        fib6_clean_tree(net, fn, fib6_prune_clone, 1, rt);
 }
 
 /*
@@ -1447,54 +1442,145 @@ static int fib6_age(struct rt6_info *rt, void *arg)
 
 static DEFINE_SPINLOCK(fib6_gc_lock);
 
-void fib6_run_gc(unsigned long dummy)
+void fib6_run_gc(unsigned long expires, struct net *net)
 {
-        if (dummy != ~0UL) {
+        if (expires != ~0UL) {
                 spin_lock_bh(&fib6_gc_lock);
-                gc_args.timeout = dummy ? (int)dummy :
-                        init_net.ipv6.sysctl.ip6_rt_gc_interval;
+                gc_args.timeout = expires ? (int)expires :
+                        net->ipv6.sysctl.ip6_rt_gc_interval;
         } else {
                 local_bh_disable();
                 if (!spin_trylock(&fib6_gc_lock)) {
-                        mod_timer(&ip6_fib_timer, jiffies + HZ);
+                        mod_timer(net->ipv6.ip6_fib_timer, jiffies + HZ);
                         local_bh_enable();
                         return;
                 }
-                gc_args.timeout = init_net.ipv6.sysctl.ip6_rt_gc_interval;
+                gc_args.timeout = net->ipv6.sysctl.ip6_rt_gc_interval;
         }
         gc_args.more = 0;
 
-        ndisc_dst_gc(&gc_args.more);
-        fib6_clean_all(fib6_age, 0, NULL);
+        icmp6_dst_gc(&gc_args.more);
+
+        fib6_clean_all(net, fib6_age, 0, NULL);
 
         if (gc_args.more)
-                mod_timer(&ip6_fib_timer, jiffies +
-                          init_net.ipv6.sysctl.ip6_rt_gc_interval);
+                mod_timer(net->ipv6.ip6_fib_timer, jiffies +
+                          net->ipv6.sysctl.ip6_rt_gc_interval);
         else {
-                del_timer(&ip6_fib_timer);
-                ip6_fib_timer.expires = 0;
+                del_timer(net->ipv6.ip6_fib_timer);
+                net->ipv6.ip6_fib_timer->expires = 0;
         }
         spin_unlock_bh(&fib6_gc_lock);
 }
 
-int __init fib6_init(void)
+static void fib6_gc_timer_cb(unsigned long arg)
+{
+        fib6_run_gc(0, (struct net *)arg);
+}
+
+static int fib6_net_init(struct net *net)
 {
         int ret;
+        struct timer_list *timer;
+
+        ret = -ENOMEM;
+        timer = kzalloc(sizeof(*timer), GFP_KERNEL);
+        if (!timer)
+                goto out;
+
+        setup_timer(timer, fib6_gc_timer_cb, (unsigned long)net);
+        net->ipv6.ip6_fib_timer = timer;
+
+        net->ipv6.rt6_stats = kzalloc(sizeof(*net->ipv6.rt6_stats), GFP_KERNEL);
+        if (!net->ipv6.rt6_stats)
+                goto out_timer;
+
+        net->ipv6.fib_table_hash =
+                kzalloc(sizeof(*net->ipv6.fib_table_hash)*FIB_TABLE_HASHSZ,
+                        GFP_KERNEL);
+        if (!net->ipv6.fib_table_hash)
+                goto out_rt6_stats;
+
+        net->ipv6.fib6_main_tbl = kzalloc(sizeof(*net->ipv6.fib6_main_tbl),
+                                          GFP_KERNEL);
+        if (!net->ipv6.fib6_main_tbl)
+                goto out_fib_table_hash;
+
+        net->ipv6.fib6_main_tbl->tb6_id = RT6_TABLE_MAIN;
+        net->ipv6.fib6_main_tbl->tb6_root.leaf = net->ipv6.ip6_null_entry;
+        net->ipv6.fib6_main_tbl->tb6_root.fn_flags =
+                RTN_ROOT | RTN_TL_ROOT | RTN_RTINFO;
+
+#ifdef CONFIG_IPV6_MULTIPLE_TABLES
+        net->ipv6.fib6_local_tbl = kzalloc(sizeof(*net->ipv6.fib6_local_tbl),
+                                           GFP_KERNEL);
+        if (!net->ipv6.fib6_local_tbl)
+                goto out_fib6_main_tbl;
+        net->ipv6.fib6_local_tbl->tb6_id = RT6_TABLE_LOCAL;
+        net->ipv6.fib6_local_tbl->tb6_root.leaf = net->ipv6.ip6_null_entry;
+        net->ipv6.fib6_local_tbl->tb6_root.fn_flags =
+                RTN_ROOT | RTN_TL_ROOT | RTN_RTINFO;
+#endif
+        fib6_tables_init(net);
+
+        ret = 0;
+out:
+        return ret;
+
+#ifdef CONFIG_IPV6_MULTIPLE_TABLES
+out_fib6_main_tbl:
+        kfree(net->ipv6.fib6_main_tbl);
+#endif
+out_fib_table_hash:
+        kfree(net->ipv6.fib_table_hash);
+out_rt6_stats:
+        kfree(net->ipv6.rt6_stats);
+out_timer:
+        kfree(timer);
+        goto out;
+ }
+
+static void fib6_net_exit(struct net *net)
+{
+        rt6_ifdown(net, NULL);
+        del_timer(net->ipv6.ip6_fib_timer);
+        kfree(net->ipv6.ip6_fib_timer);
+#ifdef CONFIG_IPV6_MULTIPLE_TABLES
+        kfree(net->ipv6.fib6_local_tbl);
+#endif
+        kfree(net->ipv6.fib6_main_tbl);
+        kfree(net->ipv6.fib_table_hash);
+        kfree(net->ipv6.rt6_stats);
+}
+
+static struct pernet_operations fib6_net_ops = {
+        .init = fib6_net_init,
+        .exit = fib6_net_exit,
+};
+
+int __init fib6_init(void)
+{
+        int ret = -ENOMEM;
+
         fib6_node_kmem = kmem_cache_create("fib6_nodes",
                                            sizeof(struct fib6_node),
                                            0, SLAB_HWCACHE_ALIGN,
                                            NULL);
         if (!fib6_node_kmem)
-                return -ENOMEM;
+                goto out;
 
-        fib6_tables_init();
+        ret = register_pernet_subsys(&fib6_net_ops);
+        if (ret)
+                goto out_kmem_cache_create;
 
         ret = __rtnl_register(PF_INET6, RTM_GETROUTE, NULL, inet6_dump_fib);
         if (ret)
-                goto out_kmem_cache_create;
+                goto out_unregister_subsys;
 out:
         return ret;
 
+out_unregister_subsys:
+        unregister_pernet_subsys(&fib6_net_ops);
 out_kmem_cache_create:
         kmem_cache_destroy(fib6_node_kmem);
         goto out;
@@ -1502,6 +1588,6 @@ out_kmem_cache_create:
 
 void fib6_gc_cleanup(void)
 {
-        del_timer(&ip6_fib_timer);
+        unregister_pernet_subsys(&fib6_net_ops);
         kmem_cache_destroy(fib6_node_kmem);
 }