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Diffstat (limited to 'net/ipv6/route.c')
-rw-r--r--net/ipv6/route.c92
1 files changed, 66 insertions, 26 deletions
diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index 999a982..58a3ec2 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -99,10 +99,7 @@ static u32 *ipv6_cow_metrics(struct dst_entry *dst, unsigned long old)
if (!(rt->dst.flags & DST_HOST))
return NULL;
- if (!rt->rt6i_peer)
- rt6_bind_peer(rt, 1);
-
- peer = rt->rt6i_peer;
+ peer = rt6_get_peer_create(rt);
if (peer) {
u32 *old_p = __DST_METRICS_PTR(old);
unsigned long prev, new;
@@ -261,16 +258,19 @@ static struct rt6_info ip6_blk_hole_entry_template = {
#endif
/* allocate dst with ip6_dst_ops */
-static inline struct rt6_info *ip6_dst_alloc(struct dst_ops *ops,
+static inline struct rt6_info *ip6_dst_alloc(struct net *net,
struct net_device *dev,
- int flags)
+ int flags,
+ struct fib6_table *table)
{
- struct rt6_info *rt = dst_alloc(ops, dev, 0, 0, flags);
+ struct rt6_info *rt = dst_alloc(&net->ipv6.ip6_dst_ops, dev,
+ 0, 0, flags);
- if (rt)
+ if (rt) {
memset(&rt->rt6i_table, 0,
sizeof(*rt) - sizeof(struct dst_entry));
-
+ rt6_init_peer(rt, table ? &table->tb6_peers : net->ipv6.peers);
+ }
return rt;
}
@@ -278,7 +278,6 @@ static void ip6_dst_destroy(struct dst_entry *dst)
{
struct rt6_info *rt = (struct rt6_info *)dst;
struct inet6_dev *idev = rt->rt6i_idev;
- struct inet_peer *peer = rt->rt6i_peer;
if (!(rt->dst.flags & DST_HOST))
dst_destroy_metrics_generic(dst);
@@ -291,8 +290,8 @@ static void ip6_dst_destroy(struct dst_entry *dst)
if (!(rt->rt6i_flags & RTF_EXPIRES) && dst->from)
dst_release(dst->from);
- if (peer) {
- rt->rt6i_peer = NULL;
+ if (rt6_has_peer(rt)) {
+ struct inet_peer *peer = rt6_peer_ptr(rt);
inet_putpeer(peer);
}
}
@@ -306,13 +305,20 @@ static u32 rt6_peer_genid(void)
void rt6_bind_peer(struct rt6_info *rt, int create)
{
+ struct inet_peer_base *base;
struct inet_peer *peer;
- peer = inet_getpeer_v6(&rt->rt6i_dst.addr, create);
- if (peer && cmpxchg(&rt->rt6i_peer, NULL, peer) != NULL)
- inet_putpeer(peer);
- else
- rt->rt6i_peer_genid = rt6_peer_genid();
+ base = inetpeer_base_ptr(rt->_rt6i_peer);
+ if (!base)
+ return;
+
+ peer = inet_getpeer_v6(base, &rt->rt6i_dst.addr, create);
+ if (peer) {
+ if (!rt6_set_peer(rt, peer))
+ inet_putpeer(peer);
+ else
+ rt->rt6i_peer_genid = rt6_peer_genid();
+ }
}
static void ip6_dst_ifdown(struct dst_entry *dst, struct net_device *dev,
@@ -952,6 +958,7 @@ struct dst_entry *ip6_blackhole_route(struct net *net, struct dst_entry *dst_ori
rt = dst_alloc(&ip6_dst_blackhole_ops, ort->dst.dev, 1, 0, 0);
if (rt) {
memset(&rt->rt6i_table, 0, sizeof(*rt) - sizeof(struct dst_entry));
+ rt6_init_peer(rt, net->ipv6.peers);
new = &rt->dst;
@@ -996,7 +1003,7 @@ static struct dst_entry *ip6_dst_check(struct dst_entry *dst, u32 cookie)
if (rt->rt6i_node && (rt->rt6i_node->fn_sernum == cookie)) {
if (rt->rt6i_peer_genid != rt6_peer_genid()) {
- if (!rt->rt6i_peer)
+ if (!rt6_has_peer(rt))
rt6_bind_peer(rt, 0);
rt->rt6i_peer_genid = rt6_peer_genid();
}
@@ -1110,7 +1117,7 @@ struct dst_entry *icmp6_dst_alloc(struct net_device *dev,
if (unlikely(!idev))
return ERR_PTR(-ENODEV);
- rt = ip6_dst_alloc(&net->ipv6.ip6_dst_ops, dev, 0);
+ rt = ip6_dst_alloc(net, dev, 0, NULL);
if (unlikely(!rt)) {
in6_dev_put(idev);
dst = ERR_PTR(-ENOMEM);
@@ -1292,7 +1299,7 @@ int ip6_route_add(struct fib6_config *cfg)
if (!table)
goto out;
- rt = ip6_dst_alloc(&net->ipv6.ip6_dst_ops, NULL, DST_NOCOUNT);
+ rt = ip6_dst_alloc(net, NULL, DST_NOCOUNT, table);
if (!rt) {
err = -ENOMEM;
@@ -1814,8 +1821,8 @@ static struct rt6_info *ip6_rt_copy(struct rt6_info *ort,
const struct in6_addr *dest)
{
struct net *net = dev_net(ort->dst.dev);
- struct rt6_info *rt = ip6_dst_alloc(&net->ipv6.ip6_dst_ops,
- ort->dst.dev, 0);
+ struct rt6_info *rt = ip6_dst_alloc(net, ort->dst.dev, 0,
+ ort->rt6i_table);
if (rt) {
rt->dst.input = ort->dst.input;
@@ -2099,8 +2106,7 @@ struct rt6_info *addrconf_dst_alloc(struct inet6_dev *idev,
bool anycast)
{
struct net *net = dev_net(idev->dev);
- struct rt6_info *rt = ip6_dst_alloc(&net->ipv6.ip6_dst_ops,
- net->loopback_dev, 0);
+ struct rt6_info *rt = ip6_dst_alloc(net, net->loopback_dev, 0, NULL);
int err;
if (!rt) {
@@ -2521,7 +2527,9 @@ static int rt6_fill_node(struct net *net,
else
expires = INT_MAX;
- peer = rt->rt6i_peer;
+ peer = NULL;
+ if (rt6_has_peer(rt))
+ peer = rt6_peer_ptr(rt);
ts = tsage = 0;
if (peer && peer->tcp_ts_stamp) {
ts = peer->tcp_ts;
@@ -2998,6 +3006,31 @@ static struct pernet_operations ip6_route_net_ops = {
.exit = ip6_route_net_exit,
};
+static int __net_init ipv6_inetpeer_init(struct net *net)
+{
+ struct inet_peer_base *bp = kmalloc(sizeof(*bp), GFP_KERNEL);
+
+ if (!bp)
+ return -ENOMEM;
+ inet_peer_base_init(bp);
+ net->ipv6.peers = bp;
+ return 0;
+}
+
+static void __net_exit ipv6_inetpeer_exit(struct net *net)
+{
+ struct inet_peer_base *bp = net->ipv6.peers;
+
+ net->ipv6.peers = NULL;
+ inetpeer_invalidate_tree(bp);
+ kfree(bp);
+}
+
+static struct pernet_operations ipv6_inetpeer_ops = {
+ .init = ipv6_inetpeer_init,
+ .exit = ipv6_inetpeer_exit,
+};
+
static struct notifier_block ip6_route_dev_notifier = {
.notifier_call = ip6_route_dev_notify,
.priority = 0,
@@ -3022,6 +3055,10 @@ int __init ip6_route_init(void)
if (ret)
goto out_dst_entries;
+ ret = register_pernet_subsys(&ipv6_inetpeer_ops);
+ if (ret)
+ goto out_register_subsys;
+
ip6_dst_blackhole_ops.kmem_cachep = ip6_dst_ops_template.kmem_cachep;
/* Registering of the loopback is done before this portion of code,
@@ -3037,7 +3074,7 @@ int __init ip6_route_init(void)
#endif
ret = fib6_init();
if (ret)
- goto out_register_subsys;
+ goto out_register_inetpeer;
ret = xfrm6_init();
if (ret)
@@ -3066,6 +3103,8 @@ xfrm6_init:
xfrm6_fini();
out_fib6_init:
fib6_gc_cleanup();
+out_register_inetpeer:
+ unregister_pernet_subsys(&ipv6_inetpeer_ops);
out_register_subsys:
unregister_pernet_subsys(&ip6_route_net_ops);
out_dst_entries:
@@ -3081,6 +3120,7 @@ void ip6_route_cleanup(void)
fib6_rules_cleanup();
xfrm6_fini();
fib6_gc_cleanup();
+ unregister_pernet_subsys(&ipv6_inetpeer_ops);
unregister_pernet_subsys(&ip6_route_net_ops);
dst_entries_destroy(&ip6_dst_blackhole_ops);
kmem_cache_destroy(ip6_dst_ops_template.kmem_cachep);
generated by cgit v0.10.2 at 2024-08-06 06:56:22 (GMT)