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Diffstat (limited to 'net/ipv6/route.c')
-rw-r--r--net/ipv6/route.c50
1 files changed, 35 insertions, 15 deletions
diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index a275c6e1e25..25661f968f3 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -109,7 +109,6 @@ static struct dst_ops ip6_dst_ops_template = {
.link_failure = ip6_link_failure,
.update_pmtu = ip6_rt_update_pmtu,
.local_out = __ip6_local_out,
- .entries = ATOMIC_INIT(0),
};
static void ip6_rt_blackhole_update_pmtu(struct dst_entry *dst, u32 mtu)
@@ -122,7 +121,6 @@ static struct dst_ops ip6_dst_blackhole_ops = {
.destroy = ip6_dst_destroy,
.check = ip6_dst_check,
.update_pmtu = ip6_rt_blackhole_update_pmtu,
- .entries = ATOMIC_INIT(0),
};
static struct rt6_info ip6_null_entry_template = {
@@ -217,14 +215,14 @@ static void ip6_dst_ifdown(struct dst_entry *dst, struct net_device *dev,
static __inline__ int rt6_check_expired(const struct rt6_info *rt)
{
- return (rt->rt6i_flags & RTF_EXPIRES &&
- time_after(jiffies, rt->rt6i_expires));
+ return (rt->rt6i_flags & RTF_EXPIRES) &&
+ time_after(jiffies, rt->rt6i_expires);
}
static inline int rt6_need_strict(struct in6_addr *daddr)
{
- return (ipv6_addr_type(daddr) &
- (IPV6_ADDR_MULTICAST | IPV6_ADDR_LINKLOCAL | IPV6_ADDR_LOOPBACK));
+ return ipv6_addr_type(daddr) &
+ (IPV6_ADDR_MULTICAST | IPV6_ADDR_LINKLOCAL | IPV6_ADDR_LOOPBACK);
}
/*
@@ -440,7 +438,7 @@ static struct rt6_info *rt6_select(struct fib6_node *fn, int oif, int strict)
__func__, match);
net = dev_net(rt0->rt6i_dev);
- return (match ? match : net->ipv6.ip6_null_entry);
+ return match ? match : net->ipv6.ip6_null_entry;
}
#ifdef CONFIG_IPV6_ROUTE_INFO
@@ -859,7 +857,7 @@ int ip6_dst_blackhole(struct sock *sk, struct dst_entry **dstp, struct flowi *fl
dst_release(*dstp);
*dstp = new;
- return (new ? 0 : -ENOMEM);
+ return new ? 0 : -ENOMEM;
}
EXPORT_SYMBOL_GPL(ip6_dst_blackhole);
@@ -1058,19 +1056,22 @@ static int ip6_dst_gc(struct dst_ops *ops)
int rt_elasticity = net->ipv6.sysctl.ip6_rt_gc_elasticity;
int rt_gc_timeout = net->ipv6.sysctl.ip6_rt_gc_timeout;
unsigned long rt_last_gc = net->ipv6.ip6_rt_last_gc;
+ int entries;
+ entries = dst_entries_get_fast(ops);
if (time_after(rt_last_gc + rt_min_interval, now) &&
- atomic_read(&ops->entries) <= rt_max_size)
+ entries <= rt_max_size)
goto out;
net->ipv6.ip6_rt_gc_expire++;
fib6_run_gc(net->ipv6.ip6_rt_gc_expire, net);
net->ipv6.ip6_rt_last_gc = now;
- if (atomic_read(&ops->entries) < ops->gc_thresh)
+ entries = dst_entries_get_slow(ops);
+ if (entries < ops->gc_thresh)
net->ipv6.ip6_rt_gc_expire = rt_gc_timeout>>1;
out:
net->ipv6.ip6_rt_gc_expire -= net->ipv6.ip6_rt_gc_expire>>rt_elasticity;
- return (atomic_read(&ops->entries) > rt_max_size);
+ return entries > rt_max_size;
}
/* Clean host part of a prefix. Not necessary in radix tree,
@@ -1169,6 +1170,8 @@ int ip6_route_add(struct fib6_config *cfg)
if (addr_type & IPV6_ADDR_MULTICAST)
rt->dst.input = ip6_mc_input;
+ else if (cfg->fc_flags & RTF_LOCAL)
+ rt->dst.input = ip6_input;
else
rt->dst.input = ip6_forward;
@@ -1190,7 +1193,8 @@ int ip6_route_add(struct fib6_config *cfg)
they would result in kernel looping; promote them to reject routes
*/
if ((cfg->fc_flags & RTF_REJECT) ||
- (dev && (dev->flags&IFF_LOOPBACK) && !(addr_type&IPV6_ADDR_LOOPBACK))) {
+ (dev && (dev->flags&IFF_LOOPBACK) && !(addr_type&IPV6_ADDR_LOOPBACK)
+ && !(cfg->fc_flags&RTF_LOCAL))) {
/* hold loopback dev/idev if we haven't done so. */
if (dev != net->loopback_dev) {
if (dev) {
@@ -2102,6 +2106,9 @@ static int rtm_to_fib6_config(struct sk_buff *skb, struct nlmsghdr *nlh,
if (rtm->rtm_type == RTN_UNREACHABLE)
cfg->fc_flags |= RTF_REJECT;
+ if (rtm->rtm_type == RTN_LOCAL)
+ cfg->fc_flags |= RTF_LOCAL;
+
cfg->fc_nlinfo.pid = NETLINK_CB(skb).pid;
cfg->fc_nlinfo.nlh = nlh;
cfg->fc_nlinfo.nl_net = sock_net(skb->sk);
@@ -2222,6 +2229,8 @@ static int rt6_fill_node(struct net *net,
NLA_PUT_U32(skb, RTA_TABLE, table);
if (rt->rt6i_flags&RTF_REJECT)
rtm->rtm_type = RTN_UNREACHABLE;
+ else if (rt->rt6i_flags&RTF_LOCAL)
+ rtm->rtm_type = RTN_LOCAL;
else if (rt->rt6i_dev && (rt->rt6i_dev->flags&IFF_LOOPBACK))
rtm->rtm_type = RTN_LOCAL;
else
@@ -2516,7 +2525,7 @@ 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),
+ dst_entries_get_slow(&net->ipv6.ip6_dst_ops),
net->ipv6.rt6_stats->fib_discarded_routes);
return 0;
@@ -2658,11 +2667,14 @@ static int __net_init ip6_route_net_init(struct net *net)
memcpy(&net->ipv6.ip6_dst_ops, &ip6_dst_ops_template,
sizeof(net->ipv6.ip6_dst_ops));
+ if (dst_entries_init(&net->ipv6.ip6_dst_ops) < 0)
+ goto out_ip6_dst_ops;
+
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_ip6_dst_ops;
+ goto out_ip6_dst_entries;
net->ipv6.ip6_null_entry->dst.path =
(struct dst_entry *)net->ipv6.ip6_null_entry;
net->ipv6.ip6_null_entry->dst.ops = &net->ipv6.ip6_dst_ops;
@@ -2712,6 +2724,8 @@ out_ip6_prohibit_entry:
out_ip6_null_entry:
kfree(net->ipv6.ip6_null_entry);
#endif
+out_ip6_dst_entries:
+ dst_entries_destroy(&net->ipv6.ip6_dst_ops);
out_ip6_dst_ops:
goto out;
}
@@ -2750,10 +2764,14 @@ int __init ip6_route_init(void)
if (!ip6_dst_ops_template.kmem_cachep)
goto out;
- ret = register_pernet_subsys(&ip6_route_net_ops);
+ ret = dst_entries_init(&ip6_dst_blackhole_ops);
if (ret)
goto out_kmem_cache;
+ ret = register_pernet_subsys(&ip6_route_net_ops);
+ if (ret)
+ goto out_dst_entries;
+
ip6_dst_blackhole_ops.kmem_cachep = ip6_dst_ops_template.kmem_cachep;
/* Registering of the loopback is done before this portion of code,
@@ -2800,6 +2818,8 @@ out_fib6_init:
fib6_gc_cleanup();
out_register_subsys:
unregister_pernet_subsys(&ip6_route_net_ops);
+out_dst_entries:
+ dst_entries_destroy(&ip6_dst_blackhole_ops);
out_kmem_cache:
kmem_cache_destroy(ip6_dst_ops_template.kmem_cachep);
goto out;
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2024-12-04 10:13:31 +0000