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

Pull networking updates from David Miller:
 "Highlights (1721 non-merge commits, this has to be a record of some
  sort):

   1) Add 'random' mode to team driver, from Jiri Pirko and Eric
      Dumazet.

   2) Make it so that any driver that supports configuration of multiple
      MAC addresses can provide the forwarding database add and del
      calls by providing a default implementation and hooking that up if
      the driver doesn't have an explicit set of handlers.  From Vlad
      Yasevich.

   3) Support GSO segmentation over tunnels and other encapsulating
      devices such as VXLAN, from Pravin B Shelar.

   4) Support L2 GRE tunnels in the flow dissector, from Michael Dalton.

   5) Implement Tail Loss Probe (TLP) detection in TCP, from Nandita
      Dukkipati.

   6) In the PHY layer, allow supporting wake-on-lan in situations where
      the PHY registers have to be written for it to be configured.

      Use it to support wake-on-lan in mv643xx_eth.

      From Michael Stapelberg.

   7) Significantly improve firewire IPV6 support, from YOSHIFUJI
      Hideaki.

   8) Allow multiple packets to be sent in a single transmission using
      network coding in batman-adv, from Martin Hundebøll.

   9) Add support for T5 cxgb4 chips, from Santosh Rastapur.

  10) Generalize the VXLAN forwarding tables so that there is more
      flexibility in configurating various aspects of the endpoints.
      From David Stevens.

  11) Support RSS and TSO in hardware over GRE tunnels in bxn2x driver,
      from Dmitry Kravkov.

  12) Zero copy support in nfnelink_queue, from Eric Dumazet and Pablo
      Neira Ayuso.

  13) Start adding networking selftests.

  14) In situations of overload on the same AF_PACKET fanout socket, or
      per-cpu packet receive queue, minimize drop by distributing the
      load to other cpus/fanouts.  From Willem de Bruijn and Eric
      Dumazet.

  15) Add support for new payload offset BPF instruction, from Daniel
      Borkmann.

  16) Convert several drivers over to mdoule_platform_driver(), from
      Sachin Kamat.

  17) Provide a minimal BPF JIT image disassembler userspace tool, from
      Daniel Borkmann.

  18) Rewrite F-RTO implementation in TCP to match the final
      specification of it in RFC4138 and RFC5682.  From Yuchung Cheng.

  19) Provide netlink socket diag of netlink sockets ("Yo dawg, I hear
      you like netlink, so I implemented netlink dumping of netlink
      sockets.") From Andrey Vagin.

  20) Remove ugly passing of rtnetlink attributes into rtnl_doit
      functions, from Thomas Graf.

  21) Allow userspace to be able to see if a configuration change occurs
      in the middle of an address or device list dump, from Nicolas
      Dichtel.

  22) Support RFC3168 ECN protection for ipv6 fragments, from Hannes
      Frederic Sowa.

  23) Increase accuracy of packet length used by packet scheduler, from
      Jason Wang.

  24) Beginning set of changes to make ipv4/ipv6 fragment handling more
      scalable and less susceptible to overload and locking contention,
      from Jesper Dangaard Brouer.

  25) Get rid of using non-type-safe NLMSG_* macros and use nlmsg_*()
      instead.  From Hong Zhiguo.

  26) Optimize route usage in IPVS by avoiding reference counting where
      possible, from Julian Anastasov.

  27) Convert IPVS schedulers to RCU, also from Julian Anastasov.

  28) Support cpu fanouts in xt_NFQUEUE netfilter target, from Holger
      Eitzenberger.

  29) Network namespace support for nf_log, ebt_log, xt_LOG, ipt_ULOG,
      nfnetlink_log, and nfnetlink_queue.  From Gao feng.

  30) Implement RFC3168 ECN protection, from Hannes Frederic Sowa.

  31) Support several new r8169 chips, from Hayes Wang.

  32) Support tokenized interface identifiers in ipv6, from Daniel
      Borkmann.

  33) Use usbnet_link_change() helper in USB net driver, from Ming Lei.

  34) Add 802.1ad vlan offload support, from Patrick McHardy.

  35) Support mmap() based netlink communication, also from Patrick
      McHardy.

  36) Support HW timestamping in mlx4 driver, from Amir Vadai.

  37) Rationalize AF_PACKET packet timestamping when transmitting, from
      Willem de Bruijn and Daniel Borkmann.

  38) Bring parity to what's provided by /proc/net/packet socket dumping
      and the info provided by netlink socket dumping of AF_PACKET
      sockets.  From Nicolas Dichtel.

  39) Fix peeking beyond zero sized SKBs in AF_UNIX, from Benjamin
      Poirier"

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1722 commits)
  filter: fix va_list build error
  af_unix: fix a fatal race with bit fields
  bnx2x: Prevent memory leak when cnic is absent
  bnx2x: correct reading of speed capabilities
  net: sctp: attribute printl with __printf for gcc fmt checks
  netlink: kconfig: move mmap i/o into netlink kconfig
  netpoll: convert mutex into a semaphore
  netlink: Fix skb ref counting.
  net_sched: act_ipt forward compat with xtables
  mlx4_en: fix a build error on 32bit arches
  Revert "bnx2x: allow nvram test to run when device is down"
  bridge: avoid OOPS if root port not found
  drivers: net: cpsw: fix kernel warn on cpsw irq enable
  sh_eth: use random MAC address if no valid one supplied
  3c509.c: call SET_NETDEV_DEV for all device types (ISA/ISAPnP/EISA)
  tg3: fix to append hardware time stamping flags
  unix/stream: fix peeking with an offset larger than data in queue
  unix/dgram: fix peeking with an offset larger than data in queue
  unix/dgram: peek beyond 0-sized skbs
  openvswitch: Remove unneeded ovs_netdev_get_ifindex()
  ...

1 files changed, 199 insertions, 89 deletions

diff --git a/net/batman-adv/soft-interface.c b/net/batman-adv/soft-interface.c
index 2711e87..6f20d33 100644
--- a/net/batman-adv/soft-interface.c
+++ b/net/batman-adv/soft-interface.c
@@ -37,6 +37,7 @@
 #include <linux/if_ether.h>
 #include "unicast.h"
 #include "bridge_loop_avoidance.h"
+#include "network-coding.h"
 
 
 static int batadv_get_settings(struct net_device *dev, struct ethtool_cmd *cmd);
@@ -401,55 +402,6 @@ static void batadv_set_lockdep_class(struct net_device *dev)
 }
 
 /**
- * batadv_softif_init - Late stage initialization of soft interface
- * @dev: registered network device to modify
- *
- * Returns error code on failures
- */
-static int batadv_softif_init(struct net_device *dev)
-{
-	batadv_set_lockdep_class(dev);
-
-	return 0;
-}
-
-static const struct net_device_ops batadv_netdev_ops = {
-	.ndo_init = batadv_softif_init,
-	.ndo_open = batadv_interface_open,
-	.ndo_stop = batadv_interface_release,
-	.ndo_get_stats = batadv_interface_stats,
-	.ndo_set_mac_address = batadv_interface_set_mac_addr,
-	.ndo_change_mtu = batadv_interface_change_mtu,
-	.ndo_start_xmit = batadv_interface_tx,
-	.ndo_validate_addr = eth_validate_addr
-};
-
-static void batadv_interface_setup(struct net_device *dev)
-{
-	struct batadv_priv *priv = netdev_priv(dev);
-
-	ether_setup(dev);
-
-	dev->netdev_ops = &batadv_netdev_ops;
-	dev->destructor = free_netdev;
-	dev->tx_queue_len = 0;
-
-	/* can't call min_mtu, because the needed variables
-	 * have not been initialized yet
-	 */
-	dev->mtu = ETH_DATA_LEN;
-	/* reserve more space in the skbuff for our header */
-	dev->hard_header_len = BATADV_HEADER_LEN;
-
-	/* generate random address */
-	eth_hw_addr_random(dev);
-
-	SET_ETHTOOL_OPS(dev, &batadv_ethtool_ops);
-
-	memset(priv, 0, sizeof(*priv));
-}
-
-/**
  * batadv_softif_destroy_finish - cleans up the remains of a softif
  * @work: work queue item
  *
@@ -465,7 +417,6 @@ static void batadv_softif_destroy_finish(struct work_struct *work)
 				cleanup_work);
 	soft_iface = bat_priv->soft_iface;
 
-	batadv_debugfs_del_meshif(soft_iface);
 	batadv_sysfs_del_meshif(soft_iface);
 
 	rtnl_lock();
@@ -473,21 +424,22 @@ static void batadv_softif_destroy_finish(struct work_struct *work)
 	rtnl_unlock();
 }
 
-struct net_device *batadv_softif_create(const char *name)
+/**
+ * batadv_softif_init_late - late stage initialization of soft interface
+ * @dev: registered network device to modify
+ *
+ * Returns error code on failures
+ */
+static int batadv_softif_init_late(struct net_device *dev)
 {
-	struct net_device *soft_iface;
 	struct batadv_priv *bat_priv;
 	int ret;
 	size_t cnt_len = sizeof(uint64_t) * BATADV_CNT_NUM;
 
-	soft_iface = alloc_netdev(sizeof(*bat_priv), name,
-				  batadv_interface_setup);
-
-	if (!soft_iface)
-		goto out;
+	batadv_set_lockdep_class(dev);
 
-	bat_priv = netdev_priv(soft_iface);
-	bat_priv->soft_iface = soft_iface;
+	bat_priv = netdev_priv(dev);
+	bat_priv->soft_iface = dev;
 	INIT_WORK(&bat_priv->cleanup_work, batadv_softif_destroy_finish);
 
 	/* batadv_interface_stats() needs to be available as soon as
@@ -495,14 +447,7 @@ struct net_device *batadv_softif_create(const char *name)
 	 */
 	bat_priv->bat_counters = __alloc_percpu(cnt_len, __alignof__(uint64_t));
 	if (!bat_priv->bat_counters)
-		goto free_soft_iface;
-
-	ret = register_netdevice(soft_iface);
-	if (ret < 0) {
-		pr_err("Unable to register the batman interface '%s': %i\n",
-		       name, ret);
-		goto free_bat_counters;
-	}
+		return -ENOMEM;
 
 	atomic_set(&bat_priv->aggregated_ogms, 1);
 	atomic_set(&bat_priv->bonding, 0);
@@ -540,49 +485,196 @@ struct net_device *batadv_softif_create(const char *name)
 	bat_priv->primary_if = NULL;
 	bat_priv->num_ifaces = 0;
 
-	ret = batadv_algo_select(bat_priv, batadv_routing_algo);
-	if (ret < 0)
-		goto unreg_soft_iface;
+	batadv_nc_init_bat_priv(bat_priv);
 
-	ret = batadv_sysfs_add_meshif(soft_iface);
+	ret = batadv_algo_select(bat_priv, batadv_routing_algo);
 	if (ret < 0)
-		goto unreg_soft_iface;
+		goto free_bat_counters;
 
-	ret = batadv_debugfs_add_meshif(soft_iface);
+	ret = batadv_debugfs_add_meshif(dev);
 	if (ret < 0)
-		goto unreg_sysfs;
+		goto free_bat_counters;
 
-	ret = batadv_mesh_init(soft_iface);
+	ret = batadv_mesh_init(dev);
 	if (ret < 0)
 		goto unreg_debugfs;
 
-	return soft_iface;
+	return 0;
 
 unreg_debugfs:
-	batadv_debugfs_del_meshif(soft_iface);
-unreg_sysfs:
-	batadv_sysfs_del_meshif(soft_iface);
-unreg_soft_iface:
-	free_percpu(bat_priv->bat_counters);
-	unregister_netdevice(soft_iface);
-	return NULL;
-
+	batadv_debugfs_del_meshif(dev);
 free_bat_counters:
 	free_percpu(bat_priv->bat_counters);
-free_soft_iface:
-	free_netdev(soft_iface);
+
+	return ret;
+}
+
+/**
+ * batadv_softif_slave_add - Add a slave interface to a batadv_soft_interface
+ * @dev: batadv_soft_interface used as master interface
+ * @slave_dev: net_device which should become the slave interface
+ *
+ * Return 0 if successful or error otherwise.
+ */
+static int batadv_softif_slave_add(struct net_device *dev,
+				   struct net_device *slave_dev)
+{
+	struct batadv_hard_iface *hard_iface;
+	int ret = -EINVAL;
+
+	hard_iface = batadv_hardif_get_by_netdev(slave_dev);
+	if (!hard_iface || hard_iface->soft_iface != NULL)
+		goto out;
+
+	ret = batadv_hardif_enable_interface(hard_iface, dev->name);
+
 out:
-	return NULL;
+	if (hard_iface)
+		batadv_hardif_free_ref(hard_iface);
+	return ret;
 }
 
-void batadv_softif_destroy(struct net_device *soft_iface)
+/**
+ * batadv_softif_slave_del - Delete a slave iface from a batadv_soft_interface
+ * @dev: batadv_soft_interface used as master interface
+ * @slave_dev: net_device which should be removed from the master interface
+ *
+ * Return 0 if successful or error otherwise.
+ */
+static int batadv_softif_slave_del(struct net_device *dev,
+				   struct net_device *slave_dev)
+{
+	struct batadv_hard_iface *hard_iface;
+	int ret = -EINVAL;
+
+	hard_iface = batadv_hardif_get_by_netdev(slave_dev);
+
+	if (!hard_iface || hard_iface->soft_iface != dev)
+		goto out;
+
+	batadv_hardif_disable_interface(hard_iface, BATADV_IF_CLEANUP_KEEP);
+	ret = 0;
+
+out:
+	if (hard_iface)
+		batadv_hardif_free_ref(hard_iface);
+	return ret;
+}
+
+static const struct net_device_ops batadv_netdev_ops = {
+	.ndo_init = batadv_softif_init_late,
+	.ndo_open = batadv_interface_open,
+	.ndo_stop = batadv_interface_release,
+	.ndo_get_stats = batadv_interface_stats,
+	.ndo_set_mac_address = batadv_interface_set_mac_addr,
+	.ndo_change_mtu = batadv_interface_change_mtu,
+	.ndo_start_xmit = batadv_interface_tx,
+	.ndo_validate_addr = eth_validate_addr,
+	.ndo_add_slave = batadv_softif_slave_add,
+	.ndo_del_slave = batadv_softif_slave_del,
+};
+
+/**
+ * batadv_softif_free - Deconstructor of batadv_soft_interface
+ * @dev: Device to cleanup and remove
+ */
+static void batadv_softif_free(struct net_device *dev)
+{
+	batadv_debugfs_del_meshif(dev);
+	batadv_mesh_free(dev);
+
+	/* some scheduled RCU callbacks need the bat_priv struct to accomplish
+	 * their tasks. Wait for them all to be finished before freeing the
+	 * netdev and its private data (bat_priv)
+	 */
+	rcu_barrier();
+
+	free_netdev(dev);
+}
+
+/**
+ * batadv_softif_init_early - early stage initialization of soft interface
+ * @dev: registered network device to modify
+ */
+static void batadv_softif_init_early(struct net_device *dev)
+{
+	struct batadv_priv *priv = netdev_priv(dev);
+
+	ether_setup(dev);
+
+	dev->netdev_ops = &batadv_netdev_ops;
+	dev->destructor = batadv_softif_free;
+	dev->tx_queue_len = 0;
+
+	/* can't call min_mtu, because the needed variables
+	 * have not been initialized yet
+	 */
+	dev->mtu = ETH_DATA_LEN;
+	/* reserve more space in the skbuff for our header */
+	dev->hard_header_len = BATADV_HEADER_LEN;
+
+	/* generate random address */
+	eth_hw_addr_random(dev);
+
+	SET_ETHTOOL_OPS(dev, &batadv_ethtool_ops);
+
+	memset(priv, 0, sizeof(*priv));
+}
+
+struct net_device *batadv_softif_create(const char *name)
+{
+	struct net_device *soft_iface;
+	int ret;
+
+	soft_iface = alloc_netdev(sizeof(struct batadv_priv), name,
+				  batadv_softif_init_early);
+	if (!soft_iface)
+		return NULL;
+
+	soft_iface->rtnl_link_ops = &batadv_link_ops;
+
+	ret = register_netdevice(soft_iface);
+	if (ret < 0) {
+		pr_err("Unable to register the batman interface '%s': %i\n",
+		       name, ret);
+		free_netdev(soft_iface);
+		return NULL;
+	}
+
+	return soft_iface;
+}
+
+/**
+ * batadv_softif_destroy_sysfs - deletion of batadv_soft_interface via sysfs
+ * @soft_iface: the to-be-removed batman-adv interface
+ */
+void batadv_softif_destroy_sysfs(struct net_device *soft_iface)
 {
 	struct batadv_priv *bat_priv = netdev_priv(soft_iface);
 
-	batadv_mesh_free(soft_iface);
 	queue_work(batadv_event_workqueue, &bat_priv->cleanup_work);
 }
 
+/**
+ * batadv_softif_destroy_netlink - deletion of batadv_soft_interface via netlink
+ * @soft_iface: the to-be-removed batman-adv interface
+ * @head: list pointer
+ */
+static void batadv_softif_destroy_netlink(struct net_device *soft_iface,
+					  struct list_head *head)
+{
+	struct batadv_hard_iface *hard_iface;
+
+	list_for_each_entry(hard_iface, &batadv_hardif_list, list) {
+		if (hard_iface->soft_iface == soft_iface)
+			batadv_hardif_disable_interface(hard_iface,
+							BATADV_IF_CLEANUP_KEEP);
+	}
+
+	batadv_sysfs_del_meshif(soft_iface);
+	unregister_netdevice_queue(soft_iface, head);
+}
+
 int batadv_softif_is_valid(const struct net_device *net_dev)
 {
 	if (net_dev->netdev_ops->ndo_start_xmit == batadv_interface_tx)
@@ -591,6 +683,13 @@ int batadv_softif_is_valid(const struct net_device *net_dev)
 	return 0;
 }
 
+struct rtnl_link_ops batadv_link_ops __read_mostly = {
+	.kind		= "batadv",
+	.priv_size	= sizeof(struct batadv_priv),
+	.setup		= batadv_softif_init_early,
+	.dellink	= batadv_softif_destroy_netlink,
+};
+
 /* ethtool */
 static int batadv_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
 {
@@ -662,6 +761,17 @@ static const struct {
 	{ "dat_put_rx" },
 	{ "dat_cached_reply_tx" },
 #endif
+#ifdef CONFIG_BATMAN_ADV_NC
+	{ "nc_code" },
+	{ "nc_code_bytes" },
+	{ "nc_recode" },
+	{ "nc_recode_bytes" },
+	{ "nc_buffer" },
+	{ "nc_decode" },
+	{ "nc_decode_bytes" },
+	{ "nc_decode_failed" },
+	{ "nc_sniffed" },
+#endif
 };
 
 static void batadv_get_strings(struct net_device *dev, uint32_t stringset,