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()
  ...

9 files changed, 161 insertions, 30 deletions

diff --git a/net/8021q/Kconfig b/net/8021q/Kconfig
index fa073a54963e..8f7517df41a5 100644
--- a/net/8021q/Kconfig
+++ b/net/8021q/Kconfig
@@ -27,3 +27,14 @@ config VLAN_8021Q_GVRP
 	  automatic propagation of registered VLANs to switches.
 
 	  If unsure, say N.
+
+config VLAN_8021Q_MVRP
+	bool "MVRP (Multiple VLAN Registration Protocol) support"
+	depends on VLAN_8021Q
+	select MRP
+	help
+	  Select this to enable MVRP end-system support. MVRP is used for
+	  automatic propagation of registered VLANs to switches; it
+	  supersedes GVRP and is not backwards-compatible.
+
+	  If unsure, say N.
diff --git a/net/8021q/Makefile b/net/8021q/Makefile
index 9f4f174ead1c..7bc8db08d7ef 100644
--- a/net/8021q/Makefile
+++ b/net/8021q/Makefile
@@ -6,5 +6,6 @@ obj-$(CONFIG_VLAN_8021Q)		+= 8021q.o
 
 8021q-y					:= vlan.o vlan_dev.o vlan_netlink.o
 8021q-$(CONFIG_VLAN_8021Q_GVRP)		+= vlan_gvrp.o
+8021q-$(CONFIG_VLAN_8021Q_MVRP)		+= vlan_mvrp.o
 8021q-$(CONFIG_PROC_FS)			+= vlanproc.o
 
diff --git a/net/8021q/vlan.c b/net/8021q/vlan.c
index a292e8050ef2..a18714469bf7 100644
--- a/net/8021q/vlan.c
+++ b/net/8021q/vlan.c
@@ -95,6 +95,8 @@ void unregister_vlan_dev(struct net_device *dev, struct list_head *head)
 
 	grp->nr_vlan_devs--;
 
+	if (vlan->flags & VLAN_FLAG_MVRP)
+		vlan_mvrp_request_leave(dev);
 	if (vlan->flags & VLAN_FLAG_GVRP)
 		vlan_gvrp_request_leave(dev);
 
@@ -105,8 +107,12 @@ void unregister_vlan_dev(struct net_device *dev, struct list_head *head)
 	 */
 	unregister_netdevice_queue(dev, head);
 
-	if (grp->nr_vlan_devs == 0)
+	netdev_upper_dev_unlink(real_dev, dev);
+
+	if (grp->nr_vlan_devs == 0) {
+		vlan_mvrp_uninit_applicant(real_dev);
 		vlan_gvrp_uninit_applicant(real_dev);
+	}
 
 	/* Get rid of the vlan's reference to real_dev */
 	dev_put(real_dev);
@@ -115,19 +121,12 @@ void unregister_vlan_dev(struct net_device *dev, struct list_head *head)
 int vlan_check_real_dev(struct net_device *real_dev, u16 vlan_id)
 {
 	const char *name = real_dev->name;
-	const struct net_device_ops *ops = real_dev->netdev_ops;
 
 	if (real_dev->features & NETIF_F_VLAN_CHALLENGED) {
 		pr_info("VLANs not supported on %s\n", name);
 		return -EOPNOTSUPP;
 	}
 
-	if ((real_dev->features & NETIF_F_HW_VLAN_FILTER) &&
-	    (!ops->ndo_vlan_rx_add_vid || !ops->ndo_vlan_rx_kill_vid)) {
-		pr_info("Device %s has buggy VLAN hw accel\n", name);
-		return -EOPNOTSUPP;
-	}
-
 	if (vlan_find_dev(real_dev, vlan_id) != NULL)
 		return -EEXIST;
 
@@ -156,15 +155,22 @@ int register_vlan_dev(struct net_device *dev)
 		err = vlan_gvrp_init_applicant(real_dev);
 		if (err < 0)
 			goto out_vid_del;
+		err = vlan_mvrp_init_applicant(real_dev);
+		if (err < 0)
+			goto out_uninit_gvrp;
 	}
 
 	err = vlan_group_prealloc_vid(grp, vlan_id);
 	if (err < 0)
-		goto out_uninit_applicant;
+		goto out_uninit_mvrp;
+
+	err = netdev_upper_dev_link(real_dev, dev);
+	if (err)
+		goto out_uninit_mvrp;
 
 	err = register_netdevice(dev);
 	if (err < 0)
-		goto out_uninit_applicant;
+		goto out_upper_dev_unlink;
 
 	/* Account for reference in struct vlan_dev_priv */
 	dev_hold(real_dev);
@@ -180,7 +186,12 @@ int register_vlan_dev(struct net_device *dev)
 
 	return 0;
 
-out_uninit_applicant:
+out_upper_dev_unlink:
+	netdev_upper_dev_unlink(real_dev, dev);
+out_uninit_mvrp:
+	if (grp->nr_vlan_devs == 0)
+		vlan_mvrp_uninit_applicant(real_dev);
+out_uninit_gvrp:
 	if (grp->nr_vlan_devs == 0)
 		vlan_gvrp_uninit_applicant(real_dev);
 out_vid_del:
@@ -654,13 +665,19 @@ static int __init vlan_proto_init(void)
 	if (err < 0)
 		goto err3;
 
-	err = vlan_netlink_init();
+	err = vlan_mvrp_init();
 	if (err < 0)
 		goto err4;
 
+	err = vlan_netlink_init();
+	if (err < 0)
+		goto err5;
+
 	vlan_ioctl_set(vlan_ioctl_handler);
 	return 0;
 
+err5:
+	vlan_mvrp_uninit();
 err4:
 	vlan_gvrp_uninit();
 err3:
@@ -681,6 +698,7 @@ static void __exit vlan_cleanup_module(void)
 	unregister_pernet_subsys(&vlan_net_ops);
 	rcu_barrier(); /* Wait for completion of call_rcu()'s */
 
+	vlan_mvrp_uninit();
 	vlan_gvrp_uninit();
 }
 
diff --git a/net/8021q/vlan.h b/net/8021q/vlan.h
index a4886d94c40c..670f1e8cfc0f 100644
--- a/net/8021q/vlan.h
+++ b/net/8021q/vlan.h
@@ -171,6 +171,22 @@ static inline int vlan_gvrp_init(void) { return 0; }
 static inline void vlan_gvrp_uninit(void) {}
 #endif
 
+#ifdef CONFIG_VLAN_8021Q_MVRP
+extern int vlan_mvrp_request_join(const struct net_device *dev);
+extern void vlan_mvrp_request_leave(const struct net_device *dev);
+extern int vlan_mvrp_init_applicant(struct net_device *dev);
+extern void vlan_mvrp_uninit_applicant(struct net_device *dev);
+extern int vlan_mvrp_init(void);
+extern void vlan_mvrp_uninit(void);
+#else
+static inline int vlan_mvrp_request_join(const struct net_device *dev) { return 0; }
+static inline void vlan_mvrp_request_leave(const struct net_device *dev) {}
+static inline int vlan_mvrp_init_applicant(struct net_device *dev) { return 0; }
+static inline void vlan_mvrp_uninit_applicant(struct net_device *dev) {}
+static inline int vlan_mvrp_init(void) { return 0; }
+static inline void vlan_mvrp_uninit(void) {}
+#endif
+
 extern const char vlan_fullname[];
 extern const char vlan_version[];
 extern int vlan_netlink_init(void);
diff --git a/net/8021q/vlan_core.c b/net/8021q/vlan_core.c
index 65e06abe023f..f3b6f515eba6 100644
--- a/net/8021q/vlan_core.c
+++ b/net/8021q/vlan_core.c
@@ -60,21 +60,25 @@ bool vlan_do_receive(struct sk_buff **skbp)
 	return true;
 }
 
-/* Must be invoked with rcu_read_lock or with RTNL. */
-struct net_device *__vlan_find_dev_deep(struct net_device *real_dev,
+/* Must be invoked with rcu_read_lock. */
+struct net_device *__vlan_find_dev_deep(struct net_device *dev,
 					u16 vlan_id)
 {
-	struct vlan_info *vlan_info = rcu_dereference_rtnl(real_dev->vlan_info);
+	struct vlan_info *vlan_info = rcu_dereference(dev->vlan_info);
 
 	if (vlan_info) {
 		return vlan_group_get_device(&vlan_info->grp, vlan_id);
 	} else {
 		/*
-		 * Bonding slaves do not have grp assigned to themselves.
-		 * Grp is assigned to bonding master instead.
+		 * Lower devices of master uppers (bonding, team) do not have
+		 * grp assigned to themselves. Grp is assigned to upper device
+		 * instead.
 		 */
-		if (netif_is_bond_slave(real_dev))
-			return __vlan_find_dev_deep(real_dev->master, vlan_id);
+		struct net_device *upper_dev;
+
+		upper_dev = netdev_master_upper_dev_get_rcu(dev);
+		if (upper_dev)
+			return __vlan_find_dev_deep(upper_dev, vlan_id);
 	}
 
 	return NULL;
@@ -140,6 +144,7 @@ err_free:
 	kfree_skb(skb);
 	return NULL;
 }
+EXPORT_SYMBOL(vlan_untag);
 
 
 /*
@@ -220,8 +225,7 @@ static int __vlan_vid_add(struct vlan_info *vlan_info, unsigned short vid,
 	if (!vid_info)
 		return -ENOMEM;
 
-	if ((dev->features & NETIF_F_HW_VLAN_FILTER) &&
-	    ops->ndo_vlan_rx_add_vid) {
+	if (dev->features & NETIF_F_HW_VLAN_FILTER) {
 		err =  ops->ndo_vlan_rx_add_vid(dev, vid);
 		if (err) {
 			kfree(vid_info);
@@ -278,8 +282,7 @@ static void __vlan_vid_del(struct vlan_info *vlan_info,
 	unsigned short vid = vid_info->vid;
 	int err;
 
-	if ((dev->features & NETIF_F_HW_VLAN_FILTER) &&
-	     ops->ndo_vlan_rx_kill_vid) {
+	if (dev->features & NETIF_F_HW_VLAN_FILTER) {
 		err = ops->ndo_vlan_rx_kill_vid(dev, vid);
 		if (err) {
 			pr_warn("failed to kill vid %d for device %s\n",
diff --git a/net/8021q/vlan_dev.c b/net/8021q/vlan_dev.c
index 4a6d31a082b9..19cf81bf9f69 100644
--- a/net/8021q/vlan_dev.c
+++ b/net/8021q/vlan_dev.c
@@ -261,7 +261,7 @@ int vlan_dev_change_flags(const struct net_device *dev, u32 flags, u32 mask)
 	u32 old_flags = vlan->flags;
 
 	if (mask & ~(VLAN_FLAG_REORDER_HDR | VLAN_FLAG_GVRP |
-		     VLAN_FLAG_LOOSE_BINDING))
+		     VLAN_FLAG_LOOSE_BINDING | VLAN_FLAG_MVRP))
 		return -EINVAL;
 
 	vlan->flags = (old_flags & ~mask) | (flags & mask);
@@ -272,6 +272,13 @@ int vlan_dev_change_flags(const struct net_device *dev, u32 flags, u32 mask)
 		else
 			vlan_gvrp_request_leave(dev);
 	}
+
+	if (netif_running(dev) && (vlan->flags ^ old_flags) & VLAN_FLAG_MVRP) {
+		if (vlan->flags & VLAN_FLAG_MVRP)
+			vlan_mvrp_request_join(dev);
+		else
+			vlan_mvrp_request_leave(dev);
+	}
 	return 0;
 }
 
@@ -312,6 +319,9 @@ static int vlan_dev_open(struct net_device *dev)
 	if (vlan->flags & VLAN_FLAG_GVRP)
 		vlan_gvrp_request_join(dev);
 
+	if (vlan->flags & VLAN_FLAG_MVRP)
+		vlan_mvrp_request_join(dev);
+
 	if (netif_carrier_ok(real_dev))
 		netif_carrier_on(dev);
 	return 0;
@@ -640,9 +650,9 @@ static int vlan_ethtool_get_settings(struct net_device *dev,
 static void vlan_ethtool_get_drvinfo(struct net_device *dev,
 				     struct ethtool_drvinfo *info)
 {
-	strcpy(info->driver, vlan_fullname);
-	strcpy(info->version, vlan_version);
-	strcpy(info->fw_version, "N/A");
+	strlcpy(info->driver, vlan_fullname, sizeof(info->driver));
+	strlcpy(info->version, vlan_version, sizeof(info->version));
+	strlcpy(info->fw_version, "N/A", sizeof(info->fw_version));
 }
 
 static struct rtnl_link_stats64 *vlan_dev_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats)
@@ -723,7 +733,7 @@ static void vlan_dev_netpoll_cleanup(struct net_device *dev)
 
 	vlan->netpoll = NULL;
 
-	__netpoll_free_rcu(netpoll);
+	__netpoll_free_async(netpoll);
 }
 #endif /* CONFIG_NET_POLL_CONTROLLER */
 
diff --git a/net/8021q/vlan_mvrp.c b/net/8021q/vlan_mvrp.c
new file mode 100644
index 000000000000..d9ec1d5964aa
--- /dev/null
+++ b/net/8021q/vlan_mvrp.c
@@ -0,0 +1,72 @@
+/*
+ *	IEEE 802.1Q Multiple VLAN Registration Protocol (MVRP)
+ *
+ *	Copyright (c) 2012 Massachusetts Institute of Technology
+ *
+ *	Adapted from code in net/8021q/vlan_gvrp.c
+ *	Copyright (c) 2008 Patrick McHardy <kaber@trash.net>
+ *
+ *	This program is free software; you can redistribute it and/or
+ *	modify it under the terms of the GNU General Public License
+ *	version 2 as published by the Free Software Foundation.
+ */
+#include <linux/types.h>
+#include <linux/if_ether.h>
+#include <linux/if_vlan.h>
+#include <net/mrp.h>
+#include "vlan.h"
+
+#define MRP_MVRP_ADDRESS	{ 0x01, 0x80, 0xc2, 0x00, 0x00, 0x21 }
+
+enum mvrp_attributes {
+	MVRP_ATTR_INVALID,
+	MVRP_ATTR_VID,
+	__MVRP_ATTR_MAX
+};
+#define MVRP_ATTR_MAX	(__MVRP_ATTR_MAX - 1)
+
+static struct mrp_application vlan_mrp_app __read_mostly = {
+	.type		= MRP_APPLICATION_MVRP,
+	.maxattr	= MVRP_ATTR_MAX,
+	.pkttype.type	= htons(ETH_P_MVRP),
+	.group_address	= MRP_MVRP_ADDRESS,
+	.version	= 0,
+};
+
+int vlan_mvrp_request_join(const struct net_device *dev)
+{
+	const struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
+	__be16 vlan_id = htons(vlan->vlan_id);
+
+	return mrp_request_join(vlan->real_dev, &vlan_mrp_app,
+				&vlan_id, sizeof(vlan_id), MVRP_ATTR_VID);
+}
+
+void vlan_mvrp_request_leave(const struct net_device *dev)
+{
+	const struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
+	__be16 vlan_id = htons(vlan->vlan_id);
+
+	mrp_request_leave(vlan->real_dev, &vlan_mrp_app,
+			  &vlan_id, sizeof(vlan_id), MVRP_ATTR_VID);
+}
+
+int vlan_mvrp_init_applicant(struct net_device *dev)
+{
+	return mrp_init_applicant(dev, &vlan_mrp_app);
+}
+
+void vlan_mvrp_uninit_applicant(struct net_device *dev)
+{
+	mrp_uninit_applicant(dev, &vlan_mrp_app);
+}
+
+int __init vlan_mvrp_init(void)
+{
+	return mrp_register_application(&vlan_mrp_app);
+}
+
+void vlan_mvrp_uninit(void)
+{
+	mrp_unregister_application(&vlan_mrp_app);
+}
diff --git a/net/8021q/vlan_netlink.c b/net/8021q/vlan_netlink.c
index 708c80ea1874..1789658b7cd7 100644
--- a/net/8021q/vlan_netlink.c
+++ b/net/8021q/vlan_netlink.c
@@ -62,7 +62,7 @@ static int vlan_validate(struct nlattr *tb[], struct nlattr *data[])
 		flags = nla_data(data[IFLA_VLAN_FLAGS]);
 		if ((flags->flags & flags->mask) &
 		    ~(VLAN_FLAG_REORDER_HDR | VLAN_FLAG_GVRP |
-		      VLAN_FLAG_LOOSE_BINDING))
+		      VLAN_FLAG_LOOSE_BINDING | VLAN_FLAG_MVRP))
 			return -EINVAL;
 	}
 
diff --git a/net/8021q/vlanproc.c b/net/8021q/vlanproc.c
index 4de77ea5fa37..dc526ec965e4 100644
--- a/net/8021q/vlanproc.c
+++ b/net/8021q/vlanproc.c
@@ -131,7 +131,7 @@ void vlan_proc_cleanup(struct net *net)
 		remove_proc_entry(name_conf, vn->proc_vlan_dir);
 
 	if (vn->proc_vlan_dir)
-		proc_net_remove(net, name_root);
+		remove_proc_entry(name_root, net->proc_net);
 
 	/* Dynamically added entries should be cleaned up as their vlan_device
 	 * is removed, so we should not have to take care of it here...