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-rw-r--r--net/ipv6/addrconf.c45
1 files changed, 28 insertions, 17 deletions
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index 024bba30de21..f9f7fd6ee1f3 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -3823,28 +3823,39 @@ nla_put_failure:
3823static int inet6_dump_ifinfo(struct sk_buff *skb, struct netlink_callback *cb) 3823static int inet6_dump_ifinfo(struct sk_buff *skb, struct netlink_callback *cb)
3824{ 3824{
3825 struct net *net = sock_net(skb->sk); 3825 struct net *net = sock_net(skb->sk);
3826 int idx, err; 3826 int h, s_h;
3827 int s_idx = cb->args[0]; 3827 int idx = 0, err, s_idx;
3828 struct net_device *dev; 3828 struct net_device *dev;
3829 struct inet6_dev *idev; 3829 struct inet6_dev *idev;
3830 struct hlist_head *head;
3831 struct hlist_node *node;
3830 3832
3831 read_lock(&dev_base_lock); 3833 s_h = cb->args[0];
3832 idx = 0; 3834 s_idx = cb->args[1];
3833 for_each_netdev(net, dev) { 3835
3834 if (idx < s_idx) 3836 rcu_read_lock();
3835 goto cont; 3837 for (h = s_h; h < NETDEV_HASHENTRIES; h++, s_idx = 0) {
3836 if ((idev = in6_dev_get(dev)) == NULL) 3838 idx = 0;
3837 goto cont; 3839 head = &net->dev_index_head[h];
3838 err = inet6_fill_ifinfo(skb, idev, NETLINK_CB(cb->skb).pid, 3840 hlist_for_each_entry_rcu(dev, node, head, index_hlist) {
3839 cb->nlh->nlmsg_seq, RTM_NEWLINK, NLM_F_MULTI); 3841 if (idx < s_idx)
3840 in6_dev_put(idev); 3842 goto cont;
3841 if (err <= 0) 3843 idev = __in6_dev_get(dev);
3842 break; 3844 if (!idev)
3845 goto cont;
3846 if (inet6_fill_ifinfo(skb, idev,
3847 NETLINK_CB(cb->skb).pid,
3848 cb->nlh->nlmsg_seq,
3849 RTM_NEWLINK, NLM_F_MULTI) <= 0)
3850 goto out;
3843cont: 3851cont:
3844 idx++; 3852 idx++;
3853 }
3845 } 3854 }
3846 read_unlock(&dev_base_lock); 3855out:
3847 cb->args[0] = idx; 3856 rcu_read_unlock();
3857 cb->args[1] = idx;
3858 cb->args[0] = h;
3848 3859
3849 return skb->len; 3860 return skb->len;
3850} 3861}