[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: Daniel Lezcano <dlezcano@fr.ibm.com>
Signed-off-by: Benjamin Thery <benjamin.thery@bull.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/net/ip6_fib.h b/include/net/ip6_fib.h
index fae267f..7c5c0f7 100644
--- a/include/net/ip6_fib.h
+++ b/include/net/ip6_fib.h
@@ -174,7 +174,8 @@
#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);
/*
diff --git a/include/net/netns/ipv6.h b/include/net/netns/ipv6.h
index c6c9aff..311a942 100644
--- a/include/net/netns/ipv6.h
+++ b/include/net/netns/ipv6.h
@@ -36,11 +36,14 @@
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
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index 3192a84..17b06d2 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -4301,15 +4301,6 @@
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);
diff --git a/net/ipv6/fib6_rules.c b/net/ipv6/fib6_rules.c
index c00055f..5513740 100644
--- a/net/ipv6/fib6_rules.c
+++ b/net/ipv6/fib6_rules.c
@@ -43,8 +43,8 @@
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 @@
{
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;
/*
diff --git a/net/ipv6/ip6_fib.c b/net/ipv6/ip6_fib.c
index f028f7a..b0814b0 100644
--- a/net/ipv6/ip6_fib.c
+++ b/net/ipv6/ip6_fib.c
@@ -79,8 +79,8 @@
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 @@
#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 @@
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 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 @@
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 @@
* 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 @@
*/
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 @@
*
*/
-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 @@
* 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 @@
|| (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 @@
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 @@
*/
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 @@
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 @@
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 @@
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 @@
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 @@
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
diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index 8f954c1..7ff66ce 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -145,8 +145,6 @@
.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 @@
.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 @@
.rt6i_ref = ATOMIC_INIT(1),
};
-struct rt6_info *ip6_blk_hole_entry;
-
#endif
/* allocate dst with ip6_dst_ops */
@@ -245,7 +239,8 @@
* 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 @@
return local;
if (strict)
- return ip6_null_entry;
+ return net->ipv6.ip6_null_entry;
}
return rt;
}
@@ -415,6 +410,7 @@
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 @@
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 @@
}
#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 @@
} \
} 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 @@
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 @@
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:
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 @@
}
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 @@
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 @@
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 @@
{
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 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 @@
}
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 @@
{
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 @@
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 @@
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 @@
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 @@
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 @@
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 @@
.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 @@
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();
if (ret)
- goto out_ip6_blk_hole_entry;
+ goto out_register_subsys;
ret = xfrm6_init();
if (ret)
@@ -2607,9 +2681,10 @@
__rtnl_register(PF_INET6, RTM_GETROUTE, inet6_rtm_getroute, NULL))
goto fib6_rules_init;
- ret = register_pernet_subsys(&ip6_route_net_ops);
+ ret = register_netdevice_notifier(&ip6_route_dev_notifier);
if (ret)
goto fib6_rules_init;
+
out:
return ret;
@@ -2619,14 +2694,8 @@
xfrm6_fini();
out_fib6_init:
fib6_gc_cleanup();
-out_ip6_blk_hole_entry:
-#ifdef CONFIG_IPV6_MULTIPLE_TABLES
- kfree(ip6_blk_hole_entry);
-out_ip6_prohibit_entry:
- kfree(ip6_prohibit_entry);
-out_ip6_null_entry:
-#endif
- kfree(ip6_null_entry);
+out_register_subsys:
+ unregister_pernet_subsys(&ip6_route_net_ops);
out_kmem_cache:
kmem_cache_destroy(ip6_dst_ops.kmem_cachep);
goto out;
@@ -2634,15 +2703,10 @@
void ip6_route_cleanup(void)
{
- unregister_pernet_subsys(&ip6_route_net_ops);
+ unregister_netdevice_notifier(&ip6_route_dev_notifier);
fib6_rules_cleanup();
xfrm6_fini();
fib6_gc_cleanup();
+ unregister_pernet_subsys(&ip6_route_net_ops);
kmem_cache_destroy(ip6_dst_ops.kmem_cachep);
-
- kfree(ip6_null_entry);
-#ifdef CONFIG_IPV6_MULTIPLE_TABLES
- kfree(ip6_prohibit_entry);
- kfree(ip6_blk_hole_entry);
-#endif
}