1 files changed, 82 insertions, 33 deletions

diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index 848b35591042..5b189c97c2fc 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -2672,7 +2672,6 @@ static int addrconf_ifdown(struct net_device *dev, int how)
 	/* Flush routes if device is being removed or it is not loopback */
 	if (how || !(dev->flags & IFF_LOOPBACK))
 		rt6_ifdown(net, dev);
-	neigh_ifdown(&nd_tbl, dev);
 
 	idev = __in6_dev_get(dev);
 	if (idev == NULL)
@@ -3838,6 +3837,15 @@ static inline void ipv6_store_devconf(struct ipv6_devconf *cnf,
 	array[DEVCONF_FORCE_TLLAO] = cnf->force_tllao;
 }
 
+static inline size_t inet6_ifla6_size(void)
+{
+	return nla_total_size(4) /* IFLA_INET6_FLAGS */
+	     + nla_total_size(sizeof(struct ifla_cacheinfo))
+	     + nla_total_size(DEVCONF_MAX * 4) /* IFLA_INET6_CONF */
+	     + nla_total_size(IPSTATS_MIB_MAX * 8) /* IFLA_INET6_STATS */
+	     + nla_total_size(ICMP6_MIB_MAX * 8); /* IFLA_INET6_ICMP6STATS */
+}
+
 static inline size_t inet6_if_nlmsg_size(void)
 {
 	return NLMSG_ALIGN(sizeof(struct ifinfomsg))
@@ -3845,13 +3853,7 @@ static inline size_t inet6_if_nlmsg_size(void)
 	       + nla_total_size(MAX_ADDR_LEN) /* IFLA_ADDRESS */
 	       + nla_total_size(4) /* IFLA_MTU */
 	       + nla_total_size(4) /* IFLA_LINK */
-	       + nla_total_size( /* IFLA_PROTINFO */
-			nla_total_size(4) /* IFLA_INET6_FLAGS */
-			+ nla_total_size(sizeof(struct ifla_cacheinfo))
-			+ nla_total_size(DEVCONF_MAX * 4) /* IFLA_INET6_CONF */
-			+ nla_total_size(IPSTATS_MIB_MAX * 8) /* IFLA_INET6_STATS */
-			+ nla_total_size(ICMP6_MIB_MAX * 8) /* IFLA_INET6_ICMP6STATS */
-		 );
+	       + nla_total_size(inet6_ifla6_size()); /* IFLA_PROTINFO */
 }
 
 static inline void __snmp6_fill_stats(u64 *stats, void __percpu **mib,
@@ -3898,15 +3900,70 @@ static void snmp6_fill_stats(u64 *stats, struct inet6_dev *idev, int attrtype,
 	}
 }
 
+static int inet6_fill_ifla6_attrs(struct sk_buff *skb, struct inet6_dev *idev)
+{
+	struct nlattr *nla;
+	struct ifla_cacheinfo ci;
+
+	NLA_PUT_U32(skb, IFLA_INET6_FLAGS, idev->if_flags);
+
+	ci.max_reasm_len = IPV6_MAXPLEN;
+	ci.tstamp = cstamp_delta(idev->tstamp);
+	ci.reachable_time = jiffies_to_msecs(idev->nd_parms->reachable_time);
+	ci.retrans_time = jiffies_to_msecs(idev->nd_parms->retrans_time);
+	NLA_PUT(skb, IFLA_INET6_CACHEINFO, sizeof(ci), &ci);
+
+	nla = nla_reserve(skb, IFLA_INET6_CONF, DEVCONF_MAX * sizeof(s32));
+	if (nla == NULL)
+		goto nla_put_failure;
+	ipv6_store_devconf(&idev->cnf, nla_data(nla), nla_len(nla));
+
+	/* XXX - MC not implemented */
+
+	nla = nla_reserve(skb, IFLA_INET6_STATS, IPSTATS_MIB_MAX * sizeof(u64));
+	if (nla == NULL)
+		goto nla_put_failure;
+	snmp6_fill_stats(nla_data(nla), idev, IFLA_INET6_STATS, nla_len(nla));
+
+	nla = nla_reserve(skb, IFLA_INET6_ICMP6STATS, ICMP6_MIB_MAX * sizeof(u64));
+	if (nla == NULL)
+		goto nla_put_failure;
+	snmp6_fill_stats(nla_data(nla), idev, IFLA_INET6_ICMP6STATS, nla_len(nla));
+
+	return 0;
+
+nla_put_failure:
+	return -EMSGSIZE;
+}
+
+static size_t inet6_get_link_af_size(const struct net_device *dev)
+{
+	if (!__in6_dev_get(dev))
+		return 0;
+
+	return inet6_ifla6_size();
+}
+
+static int inet6_fill_link_af(struct sk_buff *skb, const struct net_device *dev)
+{
+	struct inet6_dev *idev = __in6_dev_get(dev);
+
+	if (!idev)
+		return -ENODATA;
+
+	if (inet6_fill_ifla6_attrs(skb, idev) < 0)
+		return -EMSGSIZE;
+
+	return 0;
+}
+
 static int inet6_fill_ifinfo(struct sk_buff *skb, struct inet6_dev *idev,
 			     u32 pid, u32 seq, int event, unsigned int flags)
 {
 	struct net_device *dev = idev->dev;
-	struct nlattr *nla;
 	struct ifinfomsg *hdr;
 	struct nlmsghdr *nlh;
 	void *protoinfo;
-	struct ifla_cacheinfo ci;
 
 	nlh = nlmsg_put(skb, pid, seq, event, sizeof(*hdr), flags);
 	if (nlh == NULL)
@@ -3933,30 +3990,8 @@ static int inet6_fill_ifinfo(struct sk_buff *skb, struct inet6_dev *idev,
 	if (protoinfo == NULL)
 		goto nla_put_failure;
 
-	NLA_PUT_U32(skb, IFLA_INET6_FLAGS, idev->if_flags);
-
-	ci.max_reasm_len = IPV6_MAXPLEN;
-	ci.tstamp = cstamp_delta(idev->tstamp);
-	ci.reachable_time = jiffies_to_msecs(idev->nd_parms->reachable_time);
-	ci.retrans_time = jiffies_to_msecs(idev->nd_parms->retrans_time);
-	NLA_PUT(skb, IFLA_INET6_CACHEINFO, sizeof(ci), &ci);
-
-	nla = nla_reserve(skb, IFLA_INET6_CONF, DEVCONF_MAX * sizeof(s32));
-	if (nla == NULL)
-		goto nla_put_failure;
-	ipv6_store_devconf(&idev->cnf, nla_data(nla), nla_len(nla));
-
-	/* XXX - MC not implemented */
-
-	nla = nla_reserve(skb, IFLA_INET6_STATS, IPSTATS_MIB_MAX * sizeof(u64));
-	if (nla == NULL)
-		goto nla_put_failure;
-	snmp6_fill_stats(nla_data(nla), idev, IFLA_INET6_STATS, nla_len(nla));
-
-	nla = nla_reserve(skb, IFLA_INET6_ICMP6STATS, ICMP6_MIB_MAX * sizeof(u64));
-	if (nla == NULL)
+	if (inet6_fill_ifla6_attrs(skb, idev) < 0)
 		goto nla_put_failure;
-	snmp6_fill_stats(nla_data(nla), idev, IFLA_INET6_ICMP6STATS, nla_len(nla));
 
 	nla_nest_end(skb, protoinfo);
 	return nlmsg_end(skb, nlh);
@@ -4627,6 +4662,12 @@ int unregister_inet6addr_notifier(struct notifier_block *nb)
 }
 EXPORT_SYMBOL(unregister_inet6addr_notifier);
 
+static struct rtnl_af_ops inet6_ops = {
+	.family		  = AF_INET6,
+	.fill_link_af	  = inet6_fill_link_af,
+	.get_link_af_size = inet6_get_link_af_size,
+};
+
 /*
  *	Init / cleanup code
  */
@@ -4678,6 +4719,10 @@ int __init addrconf_init(void)
 
 	addrconf_verify(0);
 
+	err = rtnl_af_register(&inet6_ops);
+	if (err < 0)
+		goto errout_af;
+
 	err = __rtnl_register(PF_INET6, RTM_GETLINK, NULL, inet6_dump_ifinfo);
 	if (err < 0)
 		goto errout;
@@ -4693,6 +4738,8 @@ int __init addrconf_init(void)
 
 	return 0;
 errout:
+	rtnl_af_unregister(&inet6_ops);
+errout_af:
 	unregister_netdevice_notifier(&ipv6_dev_notf);
 errlo:
 	unregister_pernet_subsys(&addrconf_ops);
@@ -4713,6 +4760,8 @@ void addrconf_cleanup(void)
 
 	rtnl_lock();
 
+	__rtnl_af_unregister(&inet6_ops);
+
 	/* clean dev list */
 	for_each_netdev(&init_net, dev) {
 		if (__in6_dev_get(dev) == NULL)