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

Pull networking updates from David Miller:

 1) Add Maglev hashing scheduler to IPVS, from Inju Song.

 2) Lots of new TC subsystem tests from Roman Mashak.

 3) Add TCP zero copy receive and fix delayed acks and autotuning with
    SO_RCVLOWAT, from Eric Dumazet.

 4) Add XDP_REDIRECT support to mlx5 driver, from Jesper Dangaard
    Brouer.

 5) Add ttl inherit support to vxlan, from Hangbin Liu.

 6) Properly separate ipv6 routes into their logically independant
    components. fib6_info for the routing table, and fib6_nh for sets of
    nexthops, which thus can be shared. From David Ahern.

 7) Add bpf_xdp_adjust_tail helper, which can be used to generate ICMP
    messages from XDP programs. From Nikita V. Shirokov.

 8) Lots of long overdue cleanups to the r8169 driver, from Heiner
    Kallweit.

 9) Add BTF ("BPF Type Format"), from Martin KaFai Lau.

10) Add traffic condition monitoring to iwlwifi, from Luca Coelho.

11) Plumb extack down into fib_rules, from Roopa Prabhu.

12) Add Flower classifier offload support to igb, from Vinicius Costa
    Gomes.

13) Add UDP GSO support, from Willem de Bruijn.

14) Add documentation for eBPF helpers, from Quentin Monnet.

15) Add TLS tx offload to mlx5, from Ilya Lesokhin.

16) Allow applications to be given the number of bytes available to read
    on a socket via a control message returned from recvmsg(), from
    Soheil Hassas Yeganeh.

17) Add x86_32 eBPF JIT compiler, from Wang YanQing.

18) Add AF_XDP sockets, with zerocopy support infrastructure as well.
    From Björn Töpel.

19) Remove indirect load support from all of the BPF JITs and handle
    these operations in the verifier by translating them into native BPF
    instead. From Daniel Borkmann.

20) Add GRO support to ipv6 gre tunnels, from Eran Ben Elisha.

21) Allow XDP programs to do lookups in the main kernel routing tables
    for forwarding. From David Ahern.

22) Allow drivers to store hardware state into an ELF section of kernel
    dump vmcore files, and use it in cxgb4. From Rahul Lakkireddy.

23) Various RACK and loss detection improvements in TCP, from Yuchung
    Cheng.

24) Add TCP SACK compression, from Eric Dumazet.

25) Add User Mode Helper support and basic bpfilter infrastructure, from
    Alexei Starovoitov.

26) Support ports and protocol values in RTM_GETROUTE, from Roopa
    Prabhu.

27) Support bulking in ->ndo_xdp_xmit() API, from Jesper Dangaard
    Brouer.

28) Add lots of forwarding selftests, from Petr Machata.

29) Add generic network device failover driver, from Sridhar Samudrala.

* ra.kernel.org:/pub/scm/linux/kernel/git/davem/net-next: (1959 commits)
  strparser: Add __strp_unpause and use it in ktls.
  rxrpc: Fix terminal retransmission connection ID to include the channel
  net: hns3: Optimize PF CMDQ interrupt switching process
  net: hns3: Fix for VF mailbox receiving unknown message
  net: hns3: Fix for VF mailbox cannot receiving PF response
  bnx2x: use the right constant
  Revert "net: sched: cls: Fix offloading when ingress dev is vxlan"
  net: dsa: b53: Fix for brcm tag issue in Cygnus SoC
  enic: fix UDP rss bits
  netdev-FAQ: clarify DaveM's position for stable backports
  rtnetlink: validate attributes in do_setlink()
  mlxsw: Add extack messages for port_{un, }split failures
  netdevsim: Add extack error message for devlink reload
  devlink: Add extack to reload and port_{un, }split operations
  net: metrics: add proper netlink validation
  ipmr: fix error path when ipmr_new_table fails
  ip6mr: only set ip6mr_table from setsockopt when ip6mr_new_table succeeds
  net: hns3: remove unused hclgevf_cfg_func_mta_filter
  netfilter: provide udp*_lib_lookup for nf_tproxy
  qed*: Utilize FW 8.37.2.0
  ...

6 files changed, 39 insertions, 41 deletions

diff --git a/net/batman-adv/Kconfig b/net/batman-adv/Kconfig
index e4e2e02b7380..de8034d80623 100644
--- a/net/batman-adv/Kconfig
+++ b/net/batman-adv/Kconfig
@@ -35,7 +35,7 @@ config BATMAN_ADV
 config BATMAN_ADV_BATMAN_V
 	bool "B.A.T.M.A.N. V protocol (experimental)"
 	depends on BATMAN_ADV && !(CFG80211=m && BATMAN_ADV=y)
-	default n
+	default y
 	help
 	  This option enables the B.A.T.M.A.N. V protocol, the successor
 	  of the currently used B.A.T.M.A.N. IV protocol. The main
@@ -94,13 +94,13 @@ config BATMAN_ADV_DEBUGFS
 	bool "batman-adv debugfs entries"
 	depends on BATMAN_ADV
 	depends on DEBUG_FS
-	default y
+	default n
 	help
 	  Enable this to export routing related debug tables via debugfs.
 	  The information for each soft-interface and used hard-interface can be
 	  found under batman_adv/
 
-	  If unsure, say Y.
+	  If unsure, say N.
 
 config BATMAN_ADV_DEBUG
 	bool "B.A.T.M.A.N. debugging"
diff --git a/net/batman-adv/bat_v_elp.c b/net/batman-adv/bat_v_elp.c
index 28687493599f..71c20c1d4002 100644
--- a/net/batman-adv/bat_v_elp.c
+++ b/net/batman-adv/bat_v_elp.c
@@ -127,7 +127,20 @@ static u32 batadv_v_elp_get_throughput(struct batadv_hardif_neigh_node *neigh)
 	rtnl_lock();
 	ret = __ethtool_get_link_ksettings(hard_iface->net_dev, &link_settings);
 	rtnl_unlock();
-	if (ret == 0) {
+
+	/* Virtual interface drivers such as tun / tap interfaces, VLAN, etc
+	 * tend to initialize the interface throughput with some value for the
+	 * sake of having a throughput number to export via ethtool. This
+	 * exported throughput leaves batman-adv to conclude the interface
+	 * throughput is genuine (reflecting reality), thus no measurements
+	 * are necessary.
+	 *
+	 * Based on the observation that those interface types also tend to set
+	 * the link auto-negotiation to 'off', batman-adv shall check this
+	 * setting to differentiate between genuine link throughput information
+	 * and placeholders installed by virtual interfaces.
+	 */
+	if (ret == 0 && link_settings.base.autoneg == AUTONEG_ENABLE) {
 		/* link characteristics might change over time */
 		if (link_settings.base.duplex == DUPLEX_FULL)
 			hard_iface->bat_v.flags |= BATADV_FULL_DUPLEX;
diff --git a/net/batman-adv/main.h b/net/batman-adv/main.h
index 057a28a9fe88..8da3c9336111 100644
--- a/net/batman-adv/main.h
+++ b/net/batman-adv/main.h
@@ -25,7 +25,7 @@
 #define BATADV_DRIVER_DEVICE "batman-adv"
 
 #ifndef BATADV_SOURCE_VERSION
-#define BATADV_SOURCE_VERSION "2018.1"
+#define BATADV_SOURCE_VERSION "2018.2"
 #endif
 
 /* B.A.T.M.A.N. parameters */
diff --git a/net/batman-adv/multicast.c b/net/batman-adv/multicast.c
index a35f597e8c8b..86725d792e15 100644
--- a/net/batman-adv/multicast.c
+++ b/net/batman-adv/multicast.c
@@ -815,9 +815,6 @@ static int batadv_mcast_forw_mode_check(struct batadv_priv *bat_priv,
 	if (!atomic_read(&bat_priv->multicast_mode))
 		return -EINVAL;
 
-	if (atomic_read(&bat_priv->mcast.num_disabled))
-		return -EINVAL;
-
 	switch (ntohs(ethhdr->h_proto)) {
 	case ETH_P_IP:
 		return batadv_mcast_forw_mode_check_ipv4(bat_priv, skb,
@@ -1183,33 +1180,23 @@ static void batadv_mcast_tvlv_ogm_handler(struct batadv_priv *bat_priv,
 {
 	bool orig_mcast_enabled = !(flags & BATADV_TVLV_HANDLER_OGM_CIFNOTFND);
 	u8 mcast_flags = BATADV_NO_FLAGS;
-	bool orig_initialized;
 
 	if (orig_mcast_enabled && tvlv_value &&
 	    tvlv_value_len >= sizeof(mcast_flags))
 		mcast_flags = *(u8 *)tvlv_value;
 
+	if (!orig_mcast_enabled) {
+		mcast_flags |= BATADV_MCAST_WANT_ALL_IPV4;
+		mcast_flags |= BATADV_MCAST_WANT_ALL_IPV6;
+	}
+
 	spin_lock_bh(&orig->mcast_handler_lock);
-	orig_initialized = test_bit(BATADV_ORIG_CAPA_HAS_MCAST,
-				    &orig->capa_initialized);
 
-	/* If mcast support is turned on decrease the disabled mcast node
-	 * counter only if we had increased it for this node before. If this
-	 * is a completely new orig_node no need to decrease the counter.
-	 */
 	if (orig_mcast_enabled &&
 	    !test_bit(BATADV_ORIG_CAPA_HAS_MCAST, &orig->capabilities)) {
-		if (orig_initialized)
-			atomic_dec(&bat_priv->mcast.num_disabled);
 		set_bit(BATADV_ORIG_CAPA_HAS_MCAST, &orig->capabilities);
-	/* If mcast support is being switched off or if this is an initial
-	 * OGM without mcast support then increase the disabled mcast
-	 * node counter.
-	 */
 	} else if (!orig_mcast_enabled &&
-		   (test_bit(BATADV_ORIG_CAPA_HAS_MCAST, &orig->capabilities) ||
-		    !orig_initialized)) {
-		atomic_inc(&bat_priv->mcast.num_disabled);
+		   test_bit(BATADV_ORIG_CAPA_HAS_MCAST, &orig->capabilities)) {
 		clear_bit(BATADV_ORIG_CAPA_HAS_MCAST, &orig->capabilities);
 	}
 
@@ -1595,10 +1582,6 @@ void batadv_mcast_purge_orig(struct batadv_orig_node *orig)
 
 	spin_lock_bh(&orig->mcast_handler_lock);
 
-	if (!test_bit(BATADV_ORIG_CAPA_HAS_MCAST, &orig->capabilities) &&
-	    test_bit(BATADV_ORIG_CAPA_HAS_MCAST, &orig->capa_initialized))
-		atomic_dec(&bat_priv->mcast.num_disabled);
-
 	batadv_mcast_want_unsnoop_update(bat_priv, orig, BATADV_NO_FLAGS);
 	batadv_mcast_want_ipv4_update(bat_priv, orig, BATADV_NO_FLAGS);
 	batadv_mcast_want_ipv6_update(bat_priv, orig, BATADV_NO_FLAGS);
diff --git a/net/batman-adv/soft-interface.c b/net/batman-adv/soft-interface.c
index edeffcb9f3a2..1485263a348b 100644
--- a/net/batman-adv/soft-interface.c
+++ b/net/batman-adv/soft-interface.c
@@ -188,8 +188,8 @@ static void batadv_interface_set_rx_mode(struct net_device *dev)
 {
 }
 
-static int batadv_interface_tx(struct sk_buff *skb,
-			       struct net_device *soft_iface)
+static netdev_tx_t batadv_interface_tx(struct sk_buff *skb,
+				       struct net_device *soft_iface)
 {
 	struct ethhdr *ethhdr;
 	struct batadv_priv *bat_priv = netdev_priv(soft_iface);
@@ -796,7 +796,6 @@ static int batadv_softif_init_late(struct net_device *dev)
 	bat_priv->mcast.querier_ipv6.shadowing = false;
 	bat_priv->mcast.flags = BATADV_NO_FLAGS;
 	atomic_set(&bat_priv->multicast_mode, 1);
-	atomic_set(&bat_priv->mcast.num_disabled, 0);
 	atomic_set(&bat_priv->mcast.num_want_all_unsnoopables, 0);
 	atomic_set(&bat_priv->mcast.num_want_all_ipv4, 0);
 	atomic_set(&bat_priv->mcast.num_want_all_ipv6, 0);
diff --git a/net/batman-adv/types.h b/net/batman-adv/types.h
index 476b052ad982..360357f83f20 100644
--- a/net/batman-adv/types.h
+++ b/net/batman-adv/types.h
@@ -215,10 +215,12 @@ struct batadv_hard_iface {
 	struct batadv_hard_iface_bat_v bat_v;
 #endif
 
+#ifdef CONFIG_BATMAN_ADV_DEBUGFS
 	/**
 	 * @debug_dir: dentry for nc subdir in batman-adv directory in debugfs
 	 */
 	struct dentry *debug_dir;
+#endif
 
 	/**
 	 * @neigh_list: list of unique single hop neighbors via this interface
@@ -1160,13 +1162,13 @@ struct batadv_priv_dat {
  */
 struct batadv_mcast_querier_state {
 	/** @exists: whether a querier exists in the mesh */
-	bool exists;
+	unsigned char exists:1;
 
 	/**
 	 * @shadowing: if a querier exists, whether it is potentially shadowing
 	 *  multicast listeners (i.e. querier is behind our own bridge segment)
 	 */
-	bool shadowing;
+	unsigned char shadowing:1;
 };
 
 /**
@@ -1207,13 +1209,10 @@ struct batadv_priv_mcast {
 	u8 flags;
 
 	/** @enabled: whether the multicast tvlv is currently enabled */
-	bool enabled;
+	unsigned char enabled:1;
 
 	/** @bridged: whether the soft interface has a bridge on top */
-	bool bridged;
-
-	/** @num_disabled: number of nodes that have no mcast tvlv */
-	atomic_t num_disabled;
+	unsigned char bridged:1;
 
 	/**
 	 * @num_want_all_unsnoopables: number of nodes wanting unsnoopable IP
@@ -1245,10 +1244,12 @@ struct batadv_priv_nc {
 	/** @work: work queue callback item for cleanup */
 	struct delayed_work work;
 
+#ifdef CONFIG_BATMAN_ADV_DEBUGFS
 	/**
 	 * @debug_dir: dentry for nc subdir in batman-adv directory in debugfs
 	 */
 	struct dentry *debug_dir;
+#endif
 
 	/**
 	 * @min_tq: only consider neighbors for encoding if neigh_tq > min_tq
@@ -1392,7 +1393,7 @@ struct batadv_tp_vars {
 	atomic_t dup_acks;
 
 	/** @fast_recovery: true if in Fast Recovery mode */
-	bool fast_recovery;
+	unsigned char fast_recovery:1;
 
 	/** @recover: last sent seqno when entering Fast Recovery */
 	u32 recover;
@@ -1601,8 +1602,10 @@ struct batadv_priv {
 	/** @mesh_obj: kobject for sysfs mesh subdirectory */
 	struct kobject *mesh_obj;
 
+#ifdef CONFIG_BATMAN_ADV_DEBUGFS
 	/** @debug_dir: dentry for debugfs batman-adv subdirectory */
 	struct dentry *debug_dir;
+#endif
 
 	/** @forw_bat_list: list of aggregated OGMs that will be forwarded */
 	struct hlist_head forw_bat_list;
@@ -2049,10 +2052,10 @@ struct batadv_skb_cb {
 	 * @decoded: Marks a skb as decoded, which is checked when searching for
 	 *  coding opportunities in network-coding.c
 	 */
-	bool decoded;
+	unsigned char decoded:1;
 
 	/** @num_bcasts: Counter for broadcast packet retransmissions */
-	unsigned int num_bcasts;
+	unsigned char num_bcasts;
 };
 
 /**