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[NETNS][IPV6] ip6_fib - dynamically allocate gc-timer

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The ip6_fib_timer gc timer is dynamically allocated and initialized in
the ip6 fib init function. There are no more references to a static
global variable. That will allow to make multiple instance of the
garbage collecting timer and make them per 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>
This commit is contained in:
Daniel Lezcano 2008-03-03 23:29:33 -08:00 committed by David S. Miller
parent 5b7c931dff
commit 450d19f8ab
1 changed files with 21 additions and 12 deletions
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33
net/ipv6/ip6_fib.c
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@ -95,8 +95,7 @@ static __u32 rt_sernum;
static void fib6_gc_timer_cb(unsigned long arg);
static DEFINE_TIMER(ip6_fib_timer, fib6_gc_timer_cb, 0,
(unsigned long)&init_net);
static struct timer_list *ip6_fib_timer;
static struct fib6_walker_t fib6_walker_list = {
.prev = &fib6_walker_list,
@ -666,16 +665,16 @@ static int fib6_add_rt2node(struct fib6_node *fn, struct rt6_info *rt,
static __inline__ void fib6_start_gc(struct rt6_info *rt)
{
if (ip6_fib_timer.expires == 0 &&
if (ip6_fib_timer->expires == 0 &&
(rt->rt6i_flags & (RTF_EXPIRES|RTF_CACHE)))
mod_timer(&ip6_fib_timer, jiffies +
mod_timer(ip6_fib_timer, jiffies +
init_net.ipv6.sysctl.ip6_rt_gc_interval);
}
void fib6_force_start_gc(void)
{
if (ip6_fib_timer.expires == 0)
mod_timer(&ip6_fib_timer, jiffies +
if (ip6_fib_timer->expires == 0)
mod_timer(ip6_fib_timer, jiffies +
init_net.ipv6.sysctl.ip6_rt_gc_interval);
}
@ -1444,7 +1443,7 @@ void fib6_run_gc(unsigned long expires, struct net *net)
} else {
local_bh_disable();
if (!spin_trylock(&fib6_gc_lock)) {
mod_timer(&ip6_fib_timer, jiffies + HZ);
mod_timer(ip6_fib_timer, jiffies + HZ);
local_bh_enable();
return;
}
@ -1457,11 +1456,11 @@ void fib6_run_gc(unsigned long expires, struct net *net)
fib6_clean_all(net, fib6_age, 0, NULL);
if (gc_args.more)
mod_timer(&ip6_fib_timer, jiffies +
mod_timer(ip6_fib_timer, jiffies +
net->ipv6.sysctl.ip6_rt_gc_interval);
else {
del_timer(&ip6_fib_timer);
ip6_fib_timer.expires = 0;
del_timer(ip6_fib_timer);
ip6_fib_timer->expires = 0;
}
spin_unlock_bh(&fib6_gc_lock);
}
@ -1541,9 +1540,16 @@ int __init fib6_init(void)
if (!fib6_node_kmem)
goto out;
ret = -ENOMEM;
ip6_fib_timer = kzalloc(sizeof(*ip6_fib_timer), GFP_KERNEL);
if (!ip6_fib_timer)
goto out_kmem_cache_create;
setup_timer(ip6_fib_timer, fib6_gc_timer_cb, (unsigned long)&init_net);
ret = register_pernet_subsys(&fib6_net_ops);
if (ret)
goto out_kmem_cache_create;
goto out_timer;
ret = __rtnl_register(PF_INET6, RTM_GETROUTE, NULL, inet6_dump_fib);
if (ret)
@ -1553,6 +1559,8 @@ out:
out_unregister_subsys:
unregister_pernet_subsys(&fib6_net_ops);
out_timer:
kfree(ip6_fib_timer);
out_kmem_cache_create:
kmem_cache_destroy(fib6_node_kmem);
goto out;
@ -1560,7 +1568,8 @@ out_kmem_cache_create:
void fib6_gc_cleanup(void)
{
del_timer(&ip6_fib_timer);
del_timer(ip6_fib_timer);
kfree(ip6_fib_timer);
unregister_pernet_subsys(&fib6_net_ops);
kmem_cache_destroy(fib6_node_kmem);
}