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authorAlexey Dobriyan <adobriyan@gmail.com>2009-08-29 01:34:49 +0000
committerDavid S. Miller <davem@davemloft.net>2009-09-01 17:40:31 -0700
commit86393e52c3f1e2f6be18383f6ecdbcdc5727d545 (patch)
treef5c688c0cb5292143478249f807c4b2372f69dfd /net/ipv6
parent885a136c52a8871175477baf3903e1c38751b35a (diff)
downloadlinux-86393e52c3f1e2f6be18383f6ecdbcdc5727d545.tar.bz2
netns: embed ip6_dst_ops directly
struct net::ipv6.ip6_dst_ops is separatedly dynamically allocated, but there is no fundamental reason for it. Embed it directly into struct netns_ipv6. For that: * move struct dst_ops into separate header to fix circular dependencies I honestly tried not to, it's pretty impossible to do other way * drop dynamical allocation, allocate together with netns For a change, remove struct dst_ops::dst_net, it's deducible by using container_of() given dst_ops pointer. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6')
-rw-r--r--net/ipv6/route.c34
1 files changed, 13 insertions, 21 deletions
diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index 1473ee0a1f51..9ccfef345560 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -665,7 +665,7 @@ static struct rt6_info *rt6_alloc_cow(struct rt6_info *ort, struct in6_addr *dad
net->ipv6.sysctl.ip6_rt_gc_elasticity = 1;
net->ipv6.sysctl.ip6_rt_gc_min_interval = 0;
- ip6_dst_gc(net->ipv6.ip6_dst_ops);
+ ip6_dst_gc(&net->ipv6.ip6_dst_ops);
net->ipv6.sysctl.ip6_rt_gc_elasticity =
saved_rt_elasticity;
@@ -970,7 +970,7 @@ struct dst_entry *icmp6_dst_alloc(struct net_device *dev,
if (unlikely(idev == NULL))
return NULL;
- rt = ip6_dst_alloc(net->ipv6.ip6_dst_ops);
+ rt = ip6_dst_alloc(&net->ipv6.ip6_dst_ops);
if (unlikely(rt == NULL)) {
in6_dev_put(idev);
goto out;
@@ -1060,7 +1060,7 @@ static void icmp6_clean_all(int (*func)(struct rt6_info *rt, void *arg),
static int ip6_dst_gc(struct dst_ops *ops)
{
unsigned long now = jiffies;
- struct net *net = ops->dst_net;
+ struct net *net = container_of(ops, struct net, ipv6.ip6_dst_ops);
int rt_min_interval = net->ipv6.sysctl.ip6_rt_gc_min_interval;
int rt_max_size = net->ipv6.sysctl.ip6_rt_max_size;
int rt_elasticity = net->ipv6.sysctl.ip6_rt_gc_elasticity;
@@ -1154,7 +1154,7 @@ int ip6_route_add(struct fib6_config *cfg)
goto out;
}
- rt = ip6_dst_alloc(net->ipv6.ip6_dst_ops);
+ rt = ip6_dst_alloc(&net->ipv6.ip6_dst_ops);
if (rt == NULL) {
err = -ENOMEM;
@@ -1643,7 +1643,7 @@ out:
static struct rt6_info * ip6_rt_copy(struct rt6_info *ort)
{
struct net *net = dev_net(ort->rt6i_dev);
- struct rt6_info *rt = ip6_dst_alloc(net->ipv6.ip6_dst_ops);
+ struct rt6_info *rt = ip6_dst_alloc(&net->ipv6.ip6_dst_ops);
if (rt) {
rt->u.dst.input = ort->u.dst.input;
@@ -1923,7 +1923,7 @@ struct rt6_info *addrconf_dst_alloc(struct inet6_dev *idev,
int anycast)
{
struct net *net = dev_net(idev->dev);
- struct rt6_info *rt = ip6_dst_alloc(net->ipv6.ip6_dst_ops);
+ struct rt6_info *rt = ip6_dst_alloc(&net->ipv6.ip6_dst_ops);
struct neighbour *neigh;
if (rt == NULL)
@@ -2501,7 +2501,7 @@ static int rt6_stats_seq_show(struct seq_file *seq, void *v)
net->ipv6.rt6_stats->fib_rt_alloc,
net->ipv6.rt6_stats->fib_rt_entries,
net->ipv6.rt6_stats->fib_rt_cache,
- atomic_read(&net->ipv6.ip6_dst_ops->entries),
+ atomic_read(&net->ipv6.ip6_dst_ops.entries),
net->ipv6.rt6_stats->fib_discarded_routes);
return 0;
@@ -2637,7 +2637,7 @@ struct ctl_table *ipv6_route_sysctl_init(struct net *net)
if (table) {
table[0].data = &net->ipv6.sysctl.flush_delay;
- table[1].data = &net->ipv6.ip6_dst_ops->gc_thresh;
+ table[1].data = &net->ipv6.ip6_dst_ops.gc_thresh;
table[2].data = &net->ipv6.sysctl.ip6_rt_max_size;
table[3].data = &net->ipv6.sysctl.ip6_rt_gc_min_interval;
table[4].data = &net->ipv6.sysctl.ip6_rt_gc_timeout;
@@ -2655,12 +2655,8 @@ static int ip6_route_net_init(struct net *net)
{
int ret = -ENOMEM;
- net->ipv6.ip6_dst_ops = kmemdup(&ip6_dst_ops_template,
- sizeof(*net->ipv6.ip6_dst_ops),
- GFP_KERNEL);
- if (!net->ipv6.ip6_dst_ops)
- goto out;
- net->ipv6.ip6_dst_ops->dst_net = hold_net(net);
+ memcpy(&net->ipv6.ip6_dst_ops, &ip6_dst_ops_template,
+ sizeof(net->ipv6.ip6_dst_ops));
net->ipv6.ip6_null_entry = kmemdup(&ip6_null_entry_template,
sizeof(*net->ipv6.ip6_null_entry),
@@ -2669,7 +2665,7 @@ static int ip6_route_net_init(struct net *net)
goto out_ip6_dst_ops;
net->ipv6.ip6_null_entry->u.dst.path =
(struct dst_entry *)net->ipv6.ip6_null_entry;
- net->ipv6.ip6_null_entry->u.dst.ops = net->ipv6.ip6_dst_ops;
+ net->ipv6.ip6_null_entry->u.dst.ops = &net->ipv6.ip6_dst_ops;
#ifdef CONFIG_IPV6_MULTIPLE_TABLES
net->ipv6.ip6_prohibit_entry = kmemdup(&ip6_prohibit_entry_template,
@@ -2679,7 +2675,7 @@ static int ip6_route_net_init(struct net *net)
goto out_ip6_null_entry;
net->ipv6.ip6_prohibit_entry->u.dst.path =
(struct dst_entry *)net->ipv6.ip6_prohibit_entry;
- net->ipv6.ip6_prohibit_entry->u.dst.ops = net->ipv6.ip6_dst_ops;
+ net->ipv6.ip6_prohibit_entry->u.dst.ops = &net->ipv6.ip6_dst_ops;
net->ipv6.ip6_blk_hole_entry = kmemdup(&ip6_blk_hole_entry_template,
sizeof(*net->ipv6.ip6_blk_hole_entry),
@@ -2688,7 +2684,7 @@ static int ip6_route_net_init(struct net *net)
goto out_ip6_prohibit_entry;
net->ipv6.ip6_blk_hole_entry->u.dst.path =
(struct dst_entry *)net->ipv6.ip6_blk_hole_entry;
- net->ipv6.ip6_blk_hole_entry->u.dst.ops = net->ipv6.ip6_dst_ops;
+ net->ipv6.ip6_blk_hole_entry->u.dst.ops = &net->ipv6.ip6_dst_ops;
#endif
net->ipv6.sysctl.flush_delay = 0;
@@ -2717,8 +2713,6 @@ out_ip6_null_entry:
kfree(net->ipv6.ip6_null_entry);
#endif
out_ip6_dst_ops:
- release_net(net->ipv6.ip6_dst_ops->dst_net);
- kfree(net->ipv6.ip6_dst_ops);
goto out;
}
@@ -2733,8 +2727,6 @@ static void ip6_route_net_exit(struct net *net)
kfree(net->ipv6.ip6_prohibit_entry);
kfree(net->ipv6.ip6_blk_hole_entry);
#endif
- release_net(net->ipv6.ip6_dst_ops->dst_net);
- kfree(net->ipv6.ip6_dst_ops);
}
static struct pernet_operations ip6_route_net_ops = {