Commit 8ed67789 authored by Daniel Lezcano's avatar Daniel Lezcano Committed by David S. Miller
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[NETNS][IPV6] rt6_info - move rt6_info structure inside the namespace



The rt6_info structures are moved inside the network namespace
structure. All references to these structures are now relative to the
initial network namespace.
Signed-off-by: default avatarDaniel Lezcano <dlezcano@fr.ibm.com>
Signed-off-by: default avatarBenjamin Thery <benjamin.thery@bull.net>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent bdb3289f
......@@ -174,7 +174,8 @@ struct fib6_table {
#define RT6_TABLE_LOCAL RT6_TABLE_MAIN
#endif
typedef struct rt6_info *(*pol_lookup_t)(struct fib6_table *,
typedef struct rt6_info *(*pol_lookup_t)(struct net *,
struct fib6_table *,
struct flowi *, int);
/*
......
......@@ -36,11 +36,14 @@ struct netns_ipv6 {
struct xt_table *ip6table_mangle;
struct xt_table *ip6table_raw;
#endif
struct rt6_info *ip6_null_entry;
struct rt6_statistics *rt6_stats;
struct timer_list *ip6_fib_timer;
struct hlist_head *fib_table_hash;
struct fib6_table *fib6_main_tbl;
#ifdef CONFIG_IPV6_MULTIPLE_TABLES
struct rt6_info *ip6_prohibit_entry;
struct rt6_info *ip6_blk_hole_entry;
struct fib6_table *fib6_local_tbl;
struct fib_rules_ops *fib6_rules_ops;
#endif
......
......@@ -4301,15 +4301,6 @@ int __init addrconf_init(void)
if (err)
goto errlo;
ip6_null_entry->u.dst.dev = init_net.loopback_dev;
ip6_null_entry->rt6i_idev = in6_dev_get(init_net.loopback_dev);
#ifdef CONFIG_IPV6_MULTIPLE_TABLES
ip6_prohibit_entry->u.dst.dev = init_net.loopback_dev;
ip6_prohibit_entry->rt6i_idev = in6_dev_get(init_net.loopback_dev);
ip6_blk_hole_entry->u.dst.dev = init_net.loopback_dev;
ip6_blk_hole_entry->rt6i_idev = in6_dev_get(init_net.loopback_dev);
#endif
register_netdevice_notifier(&ipv6_dev_notf);
addrconf_verify(0);
......
......@@ -43,8 +43,8 @@ struct dst_entry *fib6_rule_lookup(struct net *net, struct flowi *fl,
if (arg.result)
return arg.result;
dst_hold(&ip6_null_entry->u.dst);
return &ip6_null_entry->u.dst;
dst_hold(&net->ipv6.ip6_null_entry->u.dst);
return &net->ipv6.ip6_null_entry->u.dst;
}
static int fib6_rule_action(struct fib_rule *rule, struct flowi *flp,
......@@ -52,28 +52,29 @@ static int fib6_rule_action(struct fib_rule *rule, struct flowi *flp,
{
struct rt6_info *rt = NULL;
struct fib6_table *table;
struct net *net = rule->fr_net;
pol_lookup_t lookup = arg->lookup_ptr;
switch (rule->action) {
case FR_ACT_TO_TBL:
break;
case FR_ACT_UNREACHABLE:
rt = ip6_null_entry;
rt = net->ipv6.ip6_null_entry;
goto discard_pkt;
default:
case FR_ACT_BLACKHOLE:
rt = ip6_blk_hole_entry;
rt = net->ipv6.ip6_blk_hole_entry;
goto discard_pkt;
case FR_ACT_PROHIBIT:
rt = ip6_prohibit_entry;
rt = net->ipv6.ip6_prohibit_entry;
goto discard_pkt;
}
table = fib6_get_table(rule->fr_net, rule->table);
table = fib6_get_table(net, rule->table);
if (table)
rt = lookup(table, flp, flags);
rt = lookup(net, table, flp, flags);
if (rt != ip6_null_entry) {
if (rt != net->ipv6.ip6_null_entry) {
struct fib6_rule *r = (struct fib6_rule *)rule;
/*
......
......@@ -79,8 +79,8 @@ static DEFINE_RWLOCK(fib6_walker_lock);
static void fib6_prune_clones(struct net *net, 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 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);
......@@ -193,14 +193,14 @@ static void fib6_link_table(struct net *net, struct fib6_table *tb)
#ifdef CONFIG_IPV6_MULTIPLE_TABLES
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;
}
......@@ -217,7 +217,7 @@ struct fib6_table *fib6_new_table(struct net *net, u32 id)
if (tb)
return tb;
tb = fib6_alloc_table(id);
tb = fib6_alloc_table(net, id);
if (tb != NULL)
fib6_link_table(net, tb);
......@@ -267,7 +267,7 @@ struct fib6_table *fib6_get_table(struct net *net, u32 id)
struct dst_entry *fib6_rule_lookup(struct net *net, struct flowi *fl,
int flags, pol_lookup_t lookup)
{
return (struct dst_entry *) lookup(net->ipv6.fib6_main_tbl, fl, flags);
return (struct dst_entry *) lookup(net, net->ipv6.fib6_main_tbl, fl, flags);
}
static void fib6_tables_init(struct net *net)
......@@ -717,8 +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();
......@@ -773,11 +773,11 @@ out:
* super-tree leaf node we have to find a new one for it.
*/
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);
......@@ -793,7 +793,7 @@ 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
......@@ -959,10 +959,10 @@ 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)
......@@ -981,7 +981,8 @@ 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;
......@@ -1008,11 +1009,11 @@ 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);
......@@ -1117,7 +1118,7 @@ static void fib6_del_route(struct fib6_node *fn, struct rt6_info **rtp,
if (fn->leaf == NULL) {
fn->fn_flags &= ~RTN_RTINFO;
net->ipv6.rt6_stats->fib_route_nodes--;
fn = fib6_repair_tree(fn);
fn = fib6_repair_tree(net, fn);
}
if (atomic_read(&rt->rt6i_ref) != 1) {
......@@ -1129,7 +1130,7 @@ 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);
}
......@@ -1145,6 +1146,7 @@ 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;
......@@ -1154,7 +1156,7 @@ 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);
......@@ -1501,7 +1503,7 @@ static int fib6_net_init(struct net *net)
goto out_fib_table_hash;
net->ipv6.fib6_main_tbl->tb6_id = RT6_TABLE_MAIN;
net->ipv6.fib6_main_tbl->tb6_root.leaf = ip6_null_entry;
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;
......@@ -1511,7 +1513,7 @@ static int fib6_net_init(struct net *net)
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 = ip6_null_entry;
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
......@@ -1536,6 +1538,7 @@ out_timer:
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
......
......@@ -145,8 +145,6 @@ static struct rt6_info ip6_null_entry_template = {
.rt6i_ref = ATOMIC_INIT(1),
};
struct rt6_info *ip6_null_entry;
#ifdef CONFIG_IPV6_MULTIPLE_TABLES
static int ip6_pkt_prohibit(struct sk_buff *skb);
......@@ -170,8 +168,6 @@ struct rt6_info ip6_prohibit_entry_template = {
.rt6i_ref = ATOMIC_INIT(1),
};
struct rt6_info *ip6_prohibit_entry;
static struct rt6_info ip6_blk_hole_entry_template = {
.u = {
.dst = {
......@@ -190,8 +186,6 @@ static struct rt6_info ip6_blk_hole_entry_template = {
.rt6i_ref = ATOMIC_INIT(1),
};
struct rt6_info *ip6_blk_hole_entry;
#endif
/* allocate dst with ip6_dst_ops */
......@@ -245,7 +239,8 @@ static inline int rt6_need_strict(struct in6_addr *daddr)
* Route lookup. Any table->tb6_lock is implied.
*/
static __inline__ struct rt6_info *rt6_device_match(struct rt6_info *rt,
static inline struct rt6_info *rt6_device_match(struct net *net,
struct rt6_info *rt,
int oif,
int strict)
{
......@@ -274,7 +269,7 @@ static __inline__ struct rt6_info *rt6_device_match(struct rt6_info *rt,
return local;
if (strict)
return ip6_null_entry;
return net->ipv6.ip6_null_entry;
}
return rt;
}
......@@ -415,6 +410,7 @@ static struct rt6_info *find_rr_leaf(struct fib6_node *fn,
static struct rt6_info *rt6_select(struct fib6_node *fn, int oif, int strict)
{
struct rt6_info *match, *rt0;
struct net *net;
RT6_TRACE("%s(fn->leaf=%p, oif=%d)\n",
__FUNCTION__, fn->leaf, oif);
......@@ -440,7 +436,8 @@ static struct rt6_info *rt6_select(struct fib6_node *fn, int oif, int strict)
RT6_TRACE("%s() => %p\n",
__FUNCTION__, match);
return (match ? match : ip6_null_entry);
net = rt0->rt6i_dev->nd_net;
return (match ? match : net->ipv6.ip6_null_entry);
}
#ifdef CONFIG_IPV6_ROUTE_INFO
......@@ -523,9 +520,9 @@ int rt6_route_rcv(struct net_device *dev, u8 *opt, int len,
}
#endif
#define BACKTRACK(saddr) \
#define BACKTRACK(__net, saddr) \
do { \
if (rt == ip6_null_entry) { \
if (rt == __net->ipv6.ip6_null_entry) { \
struct fib6_node *pn; \
while (1) { \
if (fn->fn_flags & RTN_TL_ROOT) \
......@@ -541,7 +538,8 @@ do { \
} \
} while(0)
static struct rt6_info *ip6_pol_route_lookup(struct fib6_table *table,
static struct rt6_info *ip6_pol_route_lookup(struct net *net,
struct fib6_table *table,
struct flowi *fl, int flags)
{
struct fib6_node *fn;
......@@ -551,8 +549,8 @@ static struct rt6_info *ip6_pol_route_lookup(struct fib6_table *table,
fn = fib6_lookup(&table->tb6_root, &fl->fl6_dst, &fl->fl6_src);
restart:
rt = fn->leaf;
rt = rt6_device_match(rt, fl->oif, flags);
BACKTRACK(&fl->fl6_src);
rt = rt6_device_match(net, rt, fl->oif, flags);
BACKTRACK(net, &fl->fl6_src);
out:
dst_use(&rt->u.dst, jiffies);
read_unlock_bh(&table->tb6_lock);
......@@ -668,8 +666,8 @@ static struct rt6_info *rt6_alloc_clone(struct rt6_info *ort, struct in6_addr *d
return rt;
}
static struct rt6_info *ip6_pol_route(struct fib6_table *table, int oif,
struct flowi *fl, int flags)
static struct rt6_info *ip6_pol_route(struct net *net, struct fib6_table *table, int oif,
struct flowi *fl, int flags)
{
struct fib6_node *fn;
struct rt6_info *rt, *nrt;
......@@ -688,8 +686,9 @@ restart_2:
restart:
rt = rt6_select(fn, oif, strict | reachable);
BACKTRACK(&fl->fl6_src);
if (rt == ip6_null_entry ||
BACKTRACK(net, &fl->fl6_src);
if (rt == net->ipv6.ip6_null_entry ||
rt->rt6i_flags & RTF_CACHE)
goto out;
......@@ -707,7 +706,7 @@ restart:
}
dst_release(&rt->u.dst);
rt = nrt ? : ip6_null_entry;
rt = nrt ? : net->ipv6.ip6_null_entry;
dst_hold(&rt->u.dst);
if (nrt) {
......@@ -740,10 +739,10 @@ out2:
return rt;
}
static struct rt6_info *ip6_pol_route_input(struct fib6_table *table,
static struct rt6_info *ip6_pol_route_input(struct net *net, struct fib6_table *table,
struct flowi *fl, int flags)
{
return ip6_pol_route(table, fl->iif, fl, flags);
return ip6_pol_route(net, table, fl->iif, fl, flags);
}
void ip6_route_input(struct sk_buff *skb)
......@@ -770,10 +769,10 @@ void ip6_route_input(struct sk_buff *skb)
skb->dst = fib6_rule_lookup(net, &fl, flags, ip6_pol_route_input);
}
static struct rt6_info *ip6_pol_route_output(struct fib6_table *table,
static struct rt6_info *ip6_pol_route_output(struct net *net, struct fib6_table *table,
struct flowi *fl, int flags)
{
return ip6_pol_route(table, fl->oif, fl, flags);
return ip6_pol_route(net, table, fl->oif, fl, flags);
}
struct dst_entry * ip6_route_output(struct sock *sk, struct flowi *fl)
......@@ -1259,8 +1258,9 @@ static int __ip6_del_rt(struct rt6_info *rt, struct nl_info *info)
{
int err;
struct fib6_table *table;
struct net *net = rt->rt6i_dev->nd_net;
if (rt == ip6_null_entry)
if (rt == net->ipv6.ip6_null_entry)
return -ENOENT;
table = rt->rt6i_table;
......@@ -1329,7 +1329,8 @@ struct ip6rd_flowi {
struct in6_addr gateway;
};
static struct rt6_info *__ip6_route_redirect(struct fib6_table *table,
static struct rt6_info *__ip6_route_redirect(struct net *net,
struct fib6_table *table,
struct flowi *fl,
int flags)
{
......@@ -1372,8 +1373,8 @@ restart:
}
if (!rt)
rt = ip6_null_entry;
BACKTRACK(&fl->fl6_src);
rt = net->ipv6.ip6_null_entry;
BACKTRACK(net, &fl->fl6_src);
out:
dst_hold(&rt->u.dst);
......@@ -1415,10 +1416,11 @@ void rt6_redirect(struct in6_addr *dest, struct in6_addr *src,
{
struct rt6_info *rt, *nrt = NULL;
struct netevent_redirect netevent;
struct net *net = neigh->dev->nd_net;
rt = ip6_route_redirect(dest, src, saddr, neigh->dev);
if (rt == ip6_null_entry) {
if (rt == net->ipv6.ip6_null_entry) {
if (net_ratelimit())
printk(KERN_DEBUG "rt6_redirect: source isn't a valid nexthop "
"for redirect target\n");
......@@ -1886,10 +1888,18 @@ struct rt6_info *addrconf_dst_alloc(struct inet6_dev *idev,
return rt;
}
struct arg_dev_net {
struct net_device *dev;
struct net *net;
};
static int fib6_ifdown(struct rt6_info *rt, void *arg)
{
if (((void*)rt->rt6i_dev == arg || arg == NULL) &&
rt != ip6_null_entry) {
struct net_device *dev = ((struct arg_dev_net *)arg)->dev;
struct net *net = ((struct arg_dev_net *)arg)->net;
if (((void *)rt->rt6i_dev == dev || dev == NULL) &&
rt != net->ipv6.ip6_null_entry) {
RT6_TRACE("deleted by ifdown %p\n", rt);
return -1;
}
......@@ -1898,7 +1908,12 @@ static int fib6_ifdown(struct rt6_info *rt, void *arg)
void rt6_ifdown(struct net *net, struct net_device *dev)
{
fib6_clean_all(net, fib6_ifdown, 0, dev);
struct arg_dev_net adn = {
.dev = dev,
.net = net,
};
fib6_clean_all(net, fib6_ifdown, 0, &adn);
}
struct rt6_mtu_change_arg
......@@ -2289,6 +2304,26 @@ errout:
rtnl_set_sk_err(net, RTNLGRP_IPV6_ROUTE, err);
}
static int ip6_route_dev_notify(struct notifier_block *this,
unsigned long event, void *data)
{
struct net_device *dev = (struct net_device *)data;
struct net *net = dev->nd_net;
if (event == NETDEV_REGISTER && (dev->flags & IFF_LOOPBACK)) {
net->ipv6.ip6_null_entry->u.dst.dev = dev;
net->ipv6.ip6_null_entry->rt6i_idev = in6_dev_get(dev);
#ifdef CONFIG_IPV6_MULTIPLE_TABLES
net->ipv6.ip6_prohibit_entry->u.dst.dev = dev;
net->ipv6.ip6_prohibit_entry->rt6i_idev = in6_dev_get(dev);
net->ipv6.ip6_blk_hole_entry->u.dst.dev = dev;
net->ipv6.ip6_blk_hole_entry->rt6i_idev = in6_dev_get(dev);
#endif
}
return NOTIFY_OK;
}
/*
* /proc
*/
......@@ -2535,11 +2570,47 @@ struct ctl_table *ipv6_route_sysctl_init(struct net *net)
static int ip6_route_net_init(struct net *net)
{
int ret = 0;
ret = -ENOMEM;
net->ipv6.ip6_null_entry = kmemdup(&ip6_null_entry_template,
sizeof(*net->ipv6.ip6_null_entry),
GFP_KERNEL);
if (!net->ipv6.ip6_null_entry)
goto out;
net->ipv6.ip6_null_entry->u.dst.path =
(struct dst_entry *)net->ipv6.ip6_null_entry;
#ifdef CONFIG_IPV6_MULTIPLE_TABLES
net->ipv6.ip6_prohibit_entry = kmemdup(&ip6_prohibit_entry_template,
sizeof(*net->ipv6.ip6_prohibit_entry),
GFP_KERNEL);
if (!net->ipv6.ip6_prohibit_entry) {
kfree(net->ipv6.ip6_null_entry);
goto out;
}
net->ipv6.ip6_prohibit_entry->u.dst.path =
(struct dst_entry *)net->ipv6.ip6_prohibit_entry;
net->ipv6.ip6_blk_hole_entry = kmemdup(&ip6_blk_hole_entry_template,
sizeof(*net->ipv6.ip6_blk_hole_entry),
GFP_KERNEL);
if (!net->ipv6.ip6_blk_hole_entry) {
kfree(net->ipv6.ip6_null_entry);
kfree(net->ipv6.ip6_prohibit_entry);
goto out;
}
net->ipv6.ip6_blk_hole_entry->u.dst.path =
(struct dst_entry *)net->ipv6.ip6_blk_hole_entry;
#endif
#ifdef CONFIG_PROC_FS
proc_net_fops_create(net, "ipv6_route", 0, &ipv6_route_proc_fops);
proc_net_fops_create(net, "rt6_stats", S_IRUGO, &rt6_stats_seq_fops);
#endif
return 0;
ret = 0;
out:
return ret;
}
static void ip6_route_net_exit(struct net *net)
......@@ -2548,7 +2619,11 @@ static void ip6_route_net_exit(struct net *net)
proc_net_remove(net, "ipv6_route");
proc_net_remove(net, "rt6_stats");
#endif
rt6_ifdown(net, NULL);
kfree(net->ipv6.ip6_null_entry);
#ifdef CONFIG_IPV6_MULTIPLE_TABLES
kfree(net->ipv6.ip6_prohibit_entry);
kfree(net->ipv6.ip6_blk_hole_entry);
#endif
}
static struct pernet_operations ip6_route_net_ops = {
......@@ -2556,6 +2631,11 @@ static struct pernet_operations ip6_route_net_ops = {
.exit = ip6_route_net_exit,
};
static struct notifier_block ip6_route_dev_notifier = {
.notifier_call = ip6_route_dev_notify,
.priority = 0,
};
int __init ip6_route_init(void)
{
int ret;
......@@ -2568,30 +2648,24 @@ int __init ip6_route_init(void)
ip6_dst_blackhole_ops.kmem_cachep = ip6_dst_ops.kmem_cachep;
ret = -ENOMEM;
ip6_null_entry = kmemdup(&ip6_null_entry_template,
sizeof(*ip6_null_entry), GFP_KERNEL);
if (!ip6_null_entry)
ret = register_pernet_subsys(&ip6_route_net_ops);
if (ret)
goto out_kmem_cache;
ip6_null_entry->u.dst.path = (struct dst_entry *)ip6_null_entry;
#ifdef CONFIG_IPV6_MULTIPLE_TABLES
ip6_prohibit_entry = kmemdup(&ip6_prohibit_entry_template,
sizeof(*ip6_prohibit_entry), GFP_KERNEL);
if (!ip6_prohibit_entry)
goto out_ip6_null_entry;
ip6_prohibit_entry->u.dst.path = (struct dst_entry *)ip6_prohibit_entry;
ip6_blk_hole_entry = kmemdup(&ip6_blk_hole_entry_template,
sizeof(*ip6_blk_hole_entry), GFP_KERNEL);
if (!ip6_blk_hole_entry)
goto out_ip6_prohibit_entry;
ip6_blk_hole_entry->u.dst.path = (struct dst_entry *)ip6_blk_hole_entry;
#endif
/* Registering of the loopback is done before this portion of code,
* the loopback reference in rt6_info will not be taken, do it
* manually for init_net */
init_net.ipv6.ip6_null_entry->u.dst.dev = init_net.loopback_dev;
init_net.ipv6.ip6_null_entry->rt6i_idev = in6_dev_get(init_net.loopback_dev);
#ifdef CONFIG_IPV6_MULTIPLE_TABLES
init_net.ipv6.ip6_prohibit_entry->u.dst.dev = init_net.loopback_dev;
init_net.ipv6.ip6_prohibit_entry->rt6i_idev = in6_dev_get(init_net.loopback_dev);
init_net.ipv6.ip6_blk_hole_entry->u.dst.dev = init_net.loopback_dev;
init_net.ipv6.ip6_blk_hole_entry->rt6i_idev = in6_dev_get(init_net.loopback_dev);
#endif
ret = fib6_init();