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Diffstat (limited to 'net/ipv4/route.c')
-rw-r--r--net/ipv4/route.c75
1 files changed, 54 insertions, 21 deletions
diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index 7b5e8e1d94b..8c3e165f003 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -273,6 +273,7 @@ static unsigned int rt_hash_code(u32 daddr, u32 saddr)
#ifdef CONFIG_PROC_FS
struct rt_cache_iter_state {
+ struct seq_net_private p;
int bucket;
int genid;
};
@@ -285,7 +286,8 @@ static struct rtable *rt_cache_get_first(struct rt_cache_iter_state *st)
rcu_read_lock_bh();
r = rcu_dereference(rt_hash_table[st->bucket].chain);
while (r) {
- if (r->rt_genid == st->genid)
+ if (r->u.dst.dev->nd_net == st->p.net &&
+ r->rt_genid == st->genid)
return r;
r = rcu_dereference(r->u.dst.rt_next);
}
@@ -294,7 +296,8 @@ static struct rtable *rt_cache_get_first(struct rt_cache_iter_state *st)
return r;
}
-static struct rtable *rt_cache_get_next(struct rt_cache_iter_state *st, struct rtable *r)
+static struct rtable *__rt_cache_get_next(struct rt_cache_iter_state *st,
+ struct rtable *r)
{
r = r->u.dst.rt_next;
while (!r) {
@@ -307,16 +310,25 @@ static struct rtable *rt_cache_get_next(struct rt_cache_iter_state *st, struct r
return rcu_dereference(r);
}
+static struct rtable *rt_cache_get_next(struct rt_cache_iter_state *st,
+ struct rtable *r)
+{
+ while ((r = __rt_cache_get_next(st, r)) != NULL) {
+ if (r->u.dst.dev->nd_net != st->p.net)
+ continue;
+ if (r->rt_genid == st->genid)
+ break;
+ }
+ return r;
+}
+
static struct rtable *rt_cache_get_idx(struct rt_cache_iter_state *st, loff_t pos)
{
struct rtable *r = rt_cache_get_first(st);
if (r)
- while (pos && (r = rt_cache_get_next(st, r))) {
- if (r->rt_genid != st->genid)
- continue;
+ while (pos && (r = rt_cache_get_next(st, r)))
--pos;
- }
return pos ? NULL : r;
}
@@ -390,7 +402,7 @@ static const struct seq_operations rt_cache_seq_ops = {
static int rt_cache_seq_open(struct inode *inode, struct file *file)
{
- return seq_open_private(file, &rt_cache_seq_ops,
+ return seq_open_net(inode, file, &rt_cache_seq_ops,
sizeof(struct rt_cache_iter_state));
}
@@ -399,7 +411,7 @@ static const struct file_operations rt_cache_seq_fops = {
.open = rt_cache_seq_open,
.read = seq_read,
.llseek = seq_lseek,
- .release = seq_release_private,
+ .release = seq_release_net,
};
@@ -533,7 +545,7 @@ static int ip_rt_acct_read(char *buffer, char **start, off_t offset,
}
#endif
-static __init int ip_rt_proc_init(struct net *net)
+static int __net_init ip_rt_do_proc_init(struct net *net)
{
struct proc_dir_entry *pde;
@@ -564,8 +576,26 @@ err2:
err1:
return -ENOMEM;
}
+
+static void __net_exit ip_rt_do_proc_exit(struct net *net)
+{
+ remove_proc_entry("rt_cache", net->proc_net_stat);
+ remove_proc_entry("rt_cache", net->proc_net);
+ remove_proc_entry("rt_acct", net->proc_net);
+}
+
+static struct pernet_operations ip_rt_proc_ops __net_initdata = {
+ .init = ip_rt_do_proc_init,
+ .exit = ip_rt_do_proc_exit,
+};
+
+static int __init ip_rt_proc_init(void)
+{
+ return register_pernet_subsys(&ip_rt_proc_ops);
+}
+
#else
-static inline int ip_rt_proc_init(struct net *net)
+static inline int ip_rt_proc_init(void)
{
return 0;
}
@@ -1131,10 +1161,12 @@ void ip_rt_redirect(__be32 old_gw, __be32 daddr, __be32 new_gw,
__be32 skeys[2] = { saddr, 0 };
int ikeys[2] = { dev->ifindex, 0 };
struct netevent_redirect netevent;
+ struct net *net;
if (!in_dev)
return;
+ net = dev->nd_net;
if (new_gw == old_gw || !IN_DEV_RX_REDIRECTS(in_dev)
|| ipv4_is_multicast(new_gw) || ipv4_is_lbcast(new_gw)
|| ipv4_is_zeronet(new_gw))
@@ -1146,7 +1178,7 @@ void ip_rt_redirect(__be32 old_gw, __be32 daddr, __be32 new_gw,
if (IN_DEV_SEC_REDIRECTS(in_dev) && ip_fib_check_default(new_gw, dev))
goto reject_redirect;
} else {
- if (inet_addr_type(&init_net, new_gw) != RTN_UNICAST)
+ if (inet_addr_type(net, new_gw) != RTN_UNICAST)
goto reject_redirect;
}
@@ -1164,7 +1196,8 @@ void ip_rt_redirect(__be32 old_gw, __be32 daddr, __be32 new_gw,
rth->fl.fl4_src != skeys[i] ||
rth->fl.oif != ikeys[k] ||
rth->fl.iif != 0 ||
- rth->rt_genid != atomic_read(&rt_genid)) {
+ rth->rt_genid != atomic_read(&rt_genid) ||
+ rth->u.dst.dev->nd_net != net) {
rthp = &rth->u.dst.rt_next;
continue;
}
@@ -2668,9 +2701,6 @@ static int inet_rtm_getroute(struct sk_buff *in_skb, struct nlmsghdr* nlh, void
int err;
struct sk_buff *skb;
- if (net != &init_net)
- return -EINVAL;
-
err = nlmsg_parse(nlh, sizeof(*rtm), tb, RTA_MAX, rtm_ipv4_policy);
if (err < 0)
goto errout;
@@ -2700,7 +2730,7 @@ static int inet_rtm_getroute(struct sk_buff *in_skb, struct nlmsghdr* nlh, void
if (iif) {
struct net_device *dev;
- dev = __dev_get_by_index(&init_net, iif);
+ dev = __dev_get_by_index(net, iif);
if (dev == NULL) {
err = -ENODEV;
goto errout_free;
@@ -2726,7 +2756,7 @@ static int inet_rtm_getroute(struct sk_buff *in_skb, struct nlmsghdr* nlh, void
},
.oif = tb[RTA_OIF] ? nla_get_u32(tb[RTA_OIF]) : 0,
};
- err = ip_route_output_key(&init_net, &rt, &fl);
+ err = ip_route_output_key(net, &rt, &fl);
}
if (err)
@@ -2737,11 +2767,11 @@ static int inet_rtm_getroute(struct sk_buff *in_skb, struct nlmsghdr* nlh, void
rt->rt_flags |= RTCF_NOTIFY;
err = rt_fill_info(skb, NETLINK_CB(in_skb).pid, nlh->nlmsg_seq,
- RTM_NEWROUTE, 0, 0);
+ RTM_NEWROUTE, 0, 0);
if (err <= 0)
goto errout_free;
- err = rtnl_unicast(skb, &init_net, NETLINK_CB(in_skb).pid);
+ err = rtnl_unicast(skb, net, NETLINK_CB(in_skb).pid);
errout:
return err;
@@ -2755,6 +2785,9 @@ int ip_rt_dump(struct sk_buff *skb, struct netlink_callback *cb)
struct rtable *rt;
int h, s_h;
int idx, s_idx;
+ struct net *net;
+
+ net = skb->sk->sk_net;
s_h = cb->args[0];
if (s_h < 0)
@@ -2764,7 +2797,7 @@ int ip_rt_dump(struct sk_buff *skb, struct netlink_callback *cb)
rcu_read_lock_bh();
for (rt = rcu_dereference(rt_hash_table[h].chain), idx = 0; rt;
rt = rcu_dereference(rt->u.dst.rt_next), idx++) {
- if (idx < s_idx)
+ if (rt->u.dst.dev->nd_net != net || idx < s_idx)
continue;
if (rt->rt_genid != atomic_read(&rt_genid))
continue;
@@ -3040,7 +3073,7 @@ int __init ip_rt_init(void)
ip_rt_secret_interval;
add_timer(&rt_secret_timer);
- if (ip_rt_proc_init(&init_net))
+ if (ip_rt_proc_init())
printk(KERN_ERR "Unable to create route proc files\n");
#ifdef CONFIG_XFRM
xfrm_init();
generated by cgit v1.2.3 (git 2.25.1) at 2024-08-25 14:49:02 +0000