Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next

Pull networking update from David Miller:

 1) Checkpoint/restarted TCP sockets now can properly propagate the TCP
    timestamp offset.  From Andrey Vagin.

 2) VMWARE VM VSOCK layer, from Andy King.

 3) Much improved support for virtual functions and SR-IOV in bnx2x,
    from Ariel ELior.

 4) All protocols on ipv4 and ipv6 are now network namespace aware, and
    all the compatability checks for initial-namespace-only protocols is
    removed.  Thanks to Tom Parkin for helping deal with the last major
    holdout, L2TP.

 5) IPV6 support in netpoll and network namespace support in pktgen,
    from Cong Wang.

 6) Multiple Registration Protocol (MRP) and Multiple VLAN Registration
    Protocol (MVRP) support, from David Ward.

 7) Compute packet lengths more accurately in the packet scheduler, from
    Eric Dumazet.

 8) Use per-task page fragment allocator in skb_append_datato_frags(),
    also from Eric Dumazet.

 9) Add support for connection tracking labels in netfilter, from
    Florian Westphal.

10) Fix default multicast group joining on ipv6, and add anti-spoofing
    checks to 6to4 and 6rd.  From Hannes Frederic Sowa.

11) Make ipv4/ipv6 fragmentation memory limits more reasonable in modern
    times, rearrange inet frag datastructures for better cacheline
    locality, and move more operations outside of locking.  From Jesper
    Dangaard Brouer.

12) Instead of strict master <--> slave relationships, allow arbitrary
    scenerios with "upper device lists".  From Jiri Pirko.

13) Improve rate limiting accuracy in TBF and act_police, also from Jiri
    Pirko.

14) Add a BPF filter netfilter match target, from Willem de Bruijn.

15) Orphan and delete a bunch of pre-historic networking drivers from
    Paul Gortmaker.

16) Add TSO support for GRE tunnels, from Pravin B SHelar.  Although
    this still needs some minor bug fixing before it's %100 correct in
    all cases.

17) Handle unresolved IPSEC states like ARP, with a resolution packet
    queue.  From Steffen Klassert.

18) Remove TCP Appropriate Byte Count support (ABC), from Stephen
    Hemminger.  This was long overdue.

19) Support SO_REUSEPORT, from Tom Herbert.

20) Allow locking a socket BPF filter, so that it cannot change after a
    process drops capabilities.

21) Add VLAN filtering to bridge, from Vlad Yasevich.

22) Bring ipv6 on-par with ipv4 and do not cache neighbour entries in
    the ipv6 routes, from YOSHIFUJI Hideaki.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1538 commits)
  ipv6: fix race condition regarding dst->expires and dst->from.
  net: fix a wrong assignment in skb_split()
  ip_gre: remove an extra dst_release()
  ppp: set qdisc_tx_busylock to avoid LOCKDEP splat
  atl1c: restore buffer state
  net: fix a build failure when !CONFIG_PROC_FS
  net: ipv4: fix waring -Wunused-variable
  net: proc: fix build failed when procfs is not configured
  Revert "xen: netback: remove redundant xenvif_put"
  net: move procfs code to net/core/net-procfs.c
  qmi_wwan, cdc-ether: add ADU960S
  bonding: set sysfs device_type to 'bond'
  bonding: fix bond_release_all inconsistencies
  b44: use netdev_alloc_skb_ip_align()
  xen: netback: remove redundant xenvif_put
  net: fec: Do a sanity check on the gpio number
  ip_gre: propogate target device GSO capability to the tunnel device
  ip_gre: allow CSUM capable devices to handle packets
  bonding: Fix initialize after use for 3ad machine state spinlock
  bonding: Fix race condition between bond_enslave() and bond_3ad_update_lacp_rate()
  ...

1 files changed, 149 insertions, 65 deletions

diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index 1868625af25e..d8aa20f6a46e 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -780,6 +780,7 @@ static noinline size_t if_nlmsg_size(const struct net_device *dev,
 	       + nla_total_size(4) /* IFLA_MTU */
 	       + nla_total_size(4) /* IFLA_LINK */
 	       + nla_total_size(4) /* IFLA_MASTER */
+	       + nla_total_size(1) /* IFLA_CARRIER */
 	       + nla_total_size(4) /* IFLA_PROMISCUITY */
 	       + nla_total_size(4) /* IFLA_NUM_TX_QUEUES */
 	       + nla_total_size(4) /* IFLA_NUM_RX_QUEUES */
@@ -879,6 +880,7 @@ static int rtnl_fill_ifinfo(struct sk_buff *skb, struct net_device *dev,
 	const struct rtnl_link_stats64 *stats;
 	struct nlattr *attr, *af_spec;
 	struct rtnl_af_ops *af_ops;
+	struct net_device *upper_dev = netdev_master_upper_dev_get(dev);
 
 	ASSERT_RTNL();
 	nlh = nlmsg_put(skb, pid, seq, type, sizeof(*ifm), flags);
@@ -907,8 +909,9 @@ static int rtnl_fill_ifinfo(struct sk_buff *skb, struct net_device *dev,
 #endif
 	    (dev->ifindex != dev->iflink &&
 	     nla_put_u32(skb, IFLA_LINK, dev->iflink)) ||
-	    (dev->master &&
-	     nla_put_u32(skb, IFLA_MASTER, dev->master->ifindex)) ||
+	    (upper_dev &&
+	     nla_put_u32(skb, IFLA_MASTER, upper_dev->ifindex)) ||
+	    nla_put_u8(skb, IFLA_CARRIER, netif_carrier_ok(dev)) ||
 	    (dev->qdisc &&
 	     nla_put_string(skb, IFLA_QDISC, dev->qdisc->ops->id)) ||
 	    (dev->ifalias &&
@@ -1108,6 +1111,7 @@ const struct nla_policy ifla_policy[IFLA_MAX+1] = {
 	[IFLA_MTU]		= { .type = NLA_U32 },
 	[IFLA_LINK]		= { .type = NLA_U32 },
 	[IFLA_MASTER]		= { .type = NLA_U32 },
+	[IFLA_CARRIER]		= { .type = NLA_U8 },
 	[IFLA_TXQLEN]		= { .type = NLA_U32 },
 	[IFLA_WEIGHT]		= { .type = NLA_U32 },
 	[IFLA_OPERSTATE]	= { .type = NLA_U8 },
@@ -1270,16 +1274,16 @@ static int do_setvfinfo(struct net_device *dev, struct nlattr *attr)
 
 static int do_set_master(struct net_device *dev, int ifindex)
 {
-	struct net_device *master_dev;
+	struct net_device *upper_dev = netdev_master_upper_dev_get(dev);
 	const struct net_device_ops *ops;
 	int err;
 
-	if (dev->master) {
-		if (dev->master->ifindex == ifindex)
+	if (upper_dev) {
+		if (upper_dev->ifindex == ifindex)
 			return 0;
-		ops = dev->master->netdev_ops;
+		ops = upper_dev->netdev_ops;
 		if (ops->ndo_del_slave) {
-			err = ops->ndo_del_slave(dev->master, dev);
+			err = ops->ndo_del_slave(upper_dev, dev);
 			if (err)
 				return err;
 		} else {
@@ -1288,12 +1292,12 @@ static int do_set_master(struct net_device *dev, int ifindex)
 	}
 
 	if (ifindex) {
-		master_dev = __dev_get_by_index(dev_net(dev), ifindex);
-		if (!master_dev)
+		upper_dev = __dev_get_by_index(dev_net(dev), ifindex);
+		if (!upper_dev)
 			return -EINVAL;
-		ops = master_dev->netdev_ops;
+		ops = upper_dev->netdev_ops;
 		if (ops->ndo_add_slave) {
-			err = ops->ndo_add_slave(master_dev, dev);
+			err = ops->ndo_add_slave(upper_dev, dev);
 			if (err)
 				return err;
 		} else {
@@ -1307,7 +1311,6 @@ static int do_setlink(struct net_device *dev, struct ifinfomsg *ifm,
 		      struct nlattr **tb, char *ifname, int modified)
 {
 	const struct net_device_ops *ops = dev->netdev_ops;
-	int send_addr_notify = 0;
 	int err;
 
 	if (tb[IFLA_NET_NS_PID] || tb[IFLA_NET_NS_FD]) {
@@ -1360,16 +1363,6 @@ static int do_setlink(struct net_device *dev, struct ifinfomsg *ifm,
 		struct sockaddr *sa;
 		int len;
 
-		if (!ops->ndo_set_mac_address) {
-			err = -EOPNOTSUPP;
-			goto errout;
-		}
-
-		if (!netif_device_present(dev)) {
-			err = -ENODEV;
-			goto errout;
-		}
-
 		len = sizeof(sa_family_t) + dev->addr_len;
 		sa = kmalloc(len, GFP_KERNEL);
 		if (!sa) {
@@ -1379,13 +1372,11 @@ static int do_setlink(struct net_device *dev, struct ifinfomsg *ifm,
 		sa->sa_family = dev->type;
 		memcpy(sa->sa_data, nla_data(tb[IFLA_ADDRESS]),
 		       dev->addr_len);
-		err = ops->ndo_set_mac_address(dev, sa);
+		err = dev_set_mac_address(dev, sa);
 		kfree(sa);
 		if (err)
 			goto errout;
-		send_addr_notify = 1;
 		modified = 1;
-		add_device_randomness(dev->dev_addr, dev->addr_len);
 	}
 
 	if (tb[IFLA_MTU]) {
@@ -1422,7 +1413,7 @@ static int do_setlink(struct net_device *dev, struct ifinfomsg *ifm,
 
 	if (tb[IFLA_BROADCAST]) {
 		nla_memcpy(dev->broadcast, tb[IFLA_BROADCAST], dev->addr_len);
-		send_addr_notify = 1;
+		call_netdevice_notifiers(NETDEV_CHANGEADDR, dev);
 	}
 
 	if (ifm->ifi_flags || ifm->ifi_change) {
@@ -1438,6 +1429,13 @@ static int do_setlink(struct net_device *dev, struct ifinfomsg *ifm,
 		modified = 1;
 	}
 
+	if (tb[IFLA_CARRIER]) {
+		err = dev_change_carrier(dev, nla_get_u8(tb[IFLA_CARRIER]));
+		if (err)
+			goto errout;
+		modified = 1;
+	}
+
 	if (tb[IFLA_TXQLEN])
 		dev->tx_queue_len = nla_get_u32(tb[IFLA_TXQLEN]);
 
@@ -1536,9 +1534,6 @@ errout:
 		net_warn_ratelimited("A link change request failed with some changes committed already. Interface %s may have been left with an inconsistent configuration, please check.\n",
 				     dev->name);
 
-	if (send_addr_notify)
-		call_netdevice_notifiers(NETDEV_CHANGEADDR, dev);
-
 	return err;
 }
 
@@ -1672,9 +1667,11 @@ struct net_device *rtnl_create_link(struct net *net,
 
 	if (tb[IFLA_MTU])
 		dev->mtu = nla_get_u32(tb[IFLA_MTU]);
-	if (tb[IFLA_ADDRESS])
+	if (tb[IFLA_ADDRESS]) {
 		memcpy(dev->dev_addr, nla_data(tb[IFLA_ADDRESS]),
 				nla_len(tb[IFLA_ADDRESS]));
+		dev->addr_assign_type = NET_ADDR_SET;
+	}
 	if (tb[IFLA_BROADCAST])
 		memcpy(dev->broadcast, nla_data(tb[IFLA_BROADCAST]),
 				nla_len(tb[IFLA_BROADCAST]));
@@ -1992,6 +1989,7 @@ errout:
 	if (err < 0)
 		rtnl_set_sk_err(net, RTNLGRP_LINK, err);
 }
+EXPORT_SYMBOL(rtmsg_ifinfo);
 
 static int nlmsg_populate_fdb_fill(struct sk_buff *skb,
 				   struct net_device *dev,
@@ -2054,16 +2052,12 @@ errout:
 static int rtnl_fdb_add(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
 {
 	struct net *net = sock_net(skb->sk);
-	struct net_device *master = NULL;
 	struct ndmsg *ndm;
 	struct nlattr *tb[NDA_MAX+1];
 	struct net_device *dev;
 	u8 *addr;
 	int err;
 
-	if (!capable(CAP_NET_ADMIN))
-		return -EPERM;
-
 	err = nlmsg_parse(nlh, sizeof(*ndm), tb, NDA_MAX, NULL);
 	if (err < 0)
 		return err;
@@ -2096,10 +2090,10 @@ static int rtnl_fdb_add(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
 	/* Support fdb on master device the net/bridge default case */
 	if ((!ndm->ndm_flags || ndm->ndm_flags & NTF_MASTER) &&
 	    (dev->priv_flags & IFF_BRIDGE_PORT)) {
-		master = dev->master;
-		err = master->netdev_ops->ndo_fdb_add(ndm, tb,
-						      dev, addr,
-						      nlh->nlmsg_flags);
+		struct net_device *br_dev = netdev_master_upper_dev_get(dev);
+		const struct net_device_ops *ops = br_dev->netdev_ops;
+
+		err = ops->ndo_fdb_add(ndm, tb, dev, addr, nlh->nlmsg_flags);
 		if (err)
 			goto out;
 		else
@@ -2125,7 +2119,7 @@ static int rtnl_fdb_del(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
 {
 	struct net *net = sock_net(skb->sk);
 	struct ndmsg *ndm;
-	struct nlattr *llattr;
+	struct nlattr *tb[NDA_MAX+1];
 	struct net_device *dev;
 	int err = -EINVAL;
 	__u8 *addr;
@@ -2133,8 +2127,9 @@ static int rtnl_fdb_del(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
 	if (!capable(CAP_NET_ADMIN))
 		return -EPERM;
 
-	if (nlmsg_len(nlh) < sizeof(*ndm))
-		return -EINVAL;
+	err = nlmsg_parse(nlh, sizeof(*ndm), tb, NDA_MAX, NULL);
+	if (err < 0)
+		return err;
 
 	ndm = nlmsg_data(nlh);
 	if (ndm->ndm_ifindex == 0) {
@@ -2148,22 +2143,27 @@ static int rtnl_fdb_del(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
 		return -ENODEV;
 	}
 
-	llattr = nlmsg_find_attr(nlh, sizeof(*ndm), NDA_LLADDR);
-	if (llattr == NULL || nla_len(llattr) != ETH_ALEN) {
-		pr_info("PF_BRIGDE: RTM_DELNEIGH with invalid address\n");
+	if (!tb[NDA_LLADDR] || nla_len(tb[NDA_LLADDR]) != ETH_ALEN) {
+		pr_info("PF_BRIDGE: RTM_DELNEIGH with invalid address\n");
+		return -EINVAL;
+	}
+
+	addr = nla_data(tb[NDA_LLADDR]);
+	if (!is_valid_ether_addr(addr)) {
+		pr_info("PF_BRIDGE: RTM_DELNEIGH with invalid ether address\n");
 		return -EINVAL;
 	}
 
-	addr = nla_data(llattr);
 	err = -EOPNOTSUPP;
 
 	/* Support fdb on master device the net/bridge default case */
 	if ((!ndm->ndm_flags || ndm->ndm_flags & NTF_MASTER) &&
 	    (dev->priv_flags & IFF_BRIDGE_PORT)) {
-		struct net_device *master = dev->master;
+		struct net_device *br_dev = netdev_master_upper_dev_get(dev);
+		const struct net_device_ops *ops = br_dev->netdev_ops;
 
-		if (master->netdev_ops->ndo_fdb_del)
-			err = master->netdev_ops->ndo_fdb_del(ndm, dev, addr);
+		if (ops->ndo_fdb_del)
+			err = ops->ndo_fdb_del(ndm, tb, dev, addr);
 
 		if (err)
 			goto out;
@@ -2173,7 +2173,7 @@ static int rtnl_fdb_del(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
 
 	/* Embedded bridge, macvlan, and any other device support */
 	if ((ndm->ndm_flags & NTF_SELF) && dev->netdev_ops->ndo_fdb_del) {
-		err = dev->netdev_ops->ndo_fdb_del(ndm, dev, addr);
+		err = dev->netdev_ops->ndo_fdb_del(ndm, tb, dev, addr);
 
 		if (!err) {
 			rtnl_fdb_notify(dev, addr, RTM_DELNEIGH);
@@ -2247,9 +2247,11 @@ static int rtnl_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb)
 	rcu_read_lock();
 	for_each_netdev_rcu(net, dev) {
 		if (dev->priv_flags & IFF_BRIDGE_PORT) {
-			struct net_device *master = dev->master;
-			const struct net_device_ops *ops = master->netdev_ops;
+			struct net_device *br_dev;
+			const struct net_device_ops *ops;
 
+			br_dev = netdev_master_upper_dev_get(dev);
+			ops = br_dev->netdev_ops;
 			if (ops->ndo_fdb_dump)
 				idx = ops->ndo_fdb_dump(skb, cb, dev, idx);
 		}
@@ -2270,6 +2272,7 @@ int ndo_dflt_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
 	struct ifinfomsg *ifm;
 	struct nlattr *br_afspec;
 	u8 operstate = netif_running(dev) ? dev->operstate : IF_OPER_DOWN;
+	struct net_device *br_dev = netdev_master_upper_dev_get(dev);
 
 	nlh = nlmsg_put(skb, pid, seq, RTM_NEWLINK, sizeof(*ifm), NLM_F_MULTI);
 	if (nlh == NULL)
@@ -2287,8 +2290,8 @@ int ndo_dflt_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
 	if (nla_put_string(skb, IFLA_IFNAME, dev->name) ||
 	    nla_put_u32(skb, IFLA_MTU, dev->mtu) ||
 	    nla_put_u8(skb, IFLA_OPERSTATE, operstate) ||
-	    (dev->master &&
-	     nla_put_u32(skb, IFLA_MASTER, dev->master->ifindex)) ||
+	    (br_dev &&
+	     nla_put_u32(skb, IFLA_MASTER, br_dev->ifindex)) ||
 	    (dev->addr_len &&
 	     nla_put(skb, IFLA_ADDRESS, dev->addr_len, dev->dev_addr)) ||
 	    (dev->ifindex != dev->iflink &&
@@ -2320,23 +2323,31 @@ static int rtnl_bridge_getlink(struct sk_buff *skb, struct netlink_callback *cb)
 	int idx = 0;
 	u32 portid = NETLINK_CB(cb->skb).portid;
 	u32 seq = cb->nlh->nlmsg_seq;
+	struct nlattr *extfilt;
+	u32 filter_mask = 0;
+
+	extfilt = nlmsg_find_attr(cb->nlh, sizeof(struct rtgenmsg),
+				  IFLA_EXT_MASK);
+	if (extfilt)
+		filter_mask = nla_get_u32(extfilt);
 
 	rcu_read_lock();
 	for_each_netdev_rcu(net, dev) {
 		const struct net_device_ops *ops = dev->netdev_ops;
-		struct net_device *master = dev->master;
+		struct net_device *br_dev = netdev_master_upper_dev_get(dev);
 
-		if (master && master->netdev_ops->ndo_bridge_getlink) {
+		if (br_dev && br_dev->netdev_ops->ndo_bridge_getlink) {
 			if (idx >= cb->args[0] &&
-			    master->netdev_ops->ndo_bridge_getlink(
-				    skb, portid, seq, dev) < 0)
+			    br_dev->netdev_ops->ndo_bridge_getlink(
+				    skb, portid, seq, dev, filter_mask) < 0)
 				break;
 			idx++;
 		}
 
 		if (ops->ndo_bridge_getlink) {
 			if (idx >= cb->args[0] &&
-			    ops->ndo_bridge_getlink(skb, portid, seq, dev) < 0)
+			    ops->ndo_bridge_getlink(skb, portid, seq, dev,
+						    filter_mask) < 0)
 				break;
 			idx++;
 		}
@@ -2365,7 +2376,7 @@ static inline size_t bridge_nlmsg_size(void)
 static int rtnl_bridge_notify(struct net_device *dev, u16 flags)
 {
 	struct net *net = dev_net(dev);
-	struct net_device *master = dev->master;
+	struct net_device *br_dev = netdev_master_upper_dev_get(dev);
 	struct sk_buff *skb;
 	int err = -EOPNOTSUPP;
 
@@ -2376,15 +2387,15 @@ static int rtnl_bridge_notify(struct net_device *dev, u16 flags)
 	}
 
 	if ((!flags || (flags & BRIDGE_FLAGS_MASTER)) &&
-	    master && master->netdev_ops->ndo_bridge_getlink) {
-		err = master->netdev_ops->ndo_bridge_getlink(skb, 0, 0, dev);
+	    br_dev && br_dev->netdev_ops->ndo_bridge_getlink) {
+		err = br_dev->netdev_ops->ndo_bridge_getlink(skb, 0, 0, dev, 0);
 		if (err < 0)
 			goto errout;
 	}
 
 	if ((flags & BRIDGE_FLAGS_SELF) &&
 	    dev->netdev_ops->ndo_bridge_getlink) {
-		err = dev->netdev_ops->ndo_bridge_getlink(skb, 0, 0, dev);
+		err = dev->netdev_ops->ndo_bridge_getlink(skb, 0, 0, dev, 0);
 		if (err < 0)
 			goto errout;
 	}
@@ -2436,13 +2447,14 @@ static int rtnl_bridge_setlink(struct sk_buff *skb, struct nlmsghdr *nlh,
 	oflags = flags;
 
 	if (!flags || (flags & BRIDGE_FLAGS_MASTER)) {
-		if (!dev->master ||
-		    !dev->master->netdev_ops->ndo_bridge_setlink) {
+		struct net_device *br_dev = netdev_master_upper_dev_get(dev);
+
+		if (!br_dev || !br_dev->netdev_ops->ndo_bridge_setlink) {
 			err = -EOPNOTSUPP;
 			goto out;
 		}
 
-		err = dev->master->netdev_ops->ndo_bridge_setlink(dev, nlh);
+		err = br_dev->netdev_ops->ndo_bridge_setlink(dev, nlh);
 		if (err)
 			goto out;
 
@@ -2468,6 +2480,77 @@ out:
 	return err;
 }
 
+static int rtnl_bridge_dellink(struct sk_buff *skb, struct nlmsghdr *nlh,
+			       void *arg)
+{
+	struct net *net = sock_net(skb->sk);
+	struct ifinfomsg *ifm;
+	struct net_device *dev;
+	struct nlattr *br_spec, *attr = NULL;
+	int rem, err = -EOPNOTSUPP;
+	u16 oflags, flags = 0;
+	bool have_flags = false;
+
+	if (nlmsg_len(nlh) < sizeof(*ifm))
+		return -EINVAL;
+
+	ifm = nlmsg_data(nlh);
+	if (ifm->ifi_family != AF_BRIDGE)
+		return -EPFNOSUPPORT;
+
+	dev = __dev_get_by_index(net, ifm->ifi_index);
+	if (!dev) {
+		pr_info("PF_BRIDGE: RTM_SETLINK with unknown ifindex\n");
+		return -ENODEV;
+	}
+
+	br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
+	if (br_spec) {
+		nla_for_each_nested(attr, br_spec, rem) {
+			if (nla_type(attr) == IFLA_BRIDGE_FLAGS) {
+				have_flags = true;
+				flags = nla_get_u16(attr);
+				break;
+			}
+		}
+	}
+
+	oflags = flags;
+
+	if (!flags || (flags & BRIDGE_FLAGS_MASTER)) {
+		struct net_device *br_dev = netdev_master_upper_dev_get(dev);
+
+		if (!br_dev || !br_dev->netdev_ops->ndo_bridge_dellink) {
+			err = -EOPNOTSUPP;
+			goto out;
+		}
+
+		err = br_dev->netdev_ops->ndo_bridge_dellink(dev, nlh);
+		if (err)
+			goto out;
+
+		flags &= ~BRIDGE_FLAGS_MASTER;
+	}
+
+	if ((flags & BRIDGE_FLAGS_SELF)) {
+		if (!dev->netdev_ops->ndo_bridge_dellink)
+			err = -EOPNOTSUPP;
+		else
+			err = dev->netdev_ops->ndo_bridge_dellink(dev, nlh);
+
+		if (!err)
+			flags &= ~BRIDGE_FLAGS_SELF;
+	}
+
+	if (have_flags)
+		memcpy(nla_data(attr), &flags, sizeof(flags));
+	/* Generate event to notify upper layer of bridge change */
+	if (!err)
+		err = rtnl_bridge_notify(dev, oflags);
+out:
+	return err;
+}
+
 /* Protected by RTNL sempahore.  */
 static struct rtattr **rta_buf;
 static int rtattr_max;
@@ -2651,6 +2734,7 @@ void __init rtnetlink_init(void)
 	rtnl_register(PF_BRIDGE, RTM_GETNEIGH, NULL, rtnl_fdb_dump, NULL);
 
 	rtnl_register(PF_BRIDGE, RTM_GETLINK, NULL, rtnl_bridge_getlink, NULL);
+	rtnl_register(PF_BRIDGE, RTM_DELLINK, rtnl_bridge_dellink, NULL, NULL);
 	rtnl_register(PF_BRIDGE, RTM_SETLINK, rtnl_bridge_setlink, NULL, NULL);
 }