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

Pull networking updates from David Miller:

 1) Unified UDP encapsulation offload methods for drivers, from
    Alexander Duyck.

 2) Make DSA binding more sane, from Andrew Lunn.

 3) Support QCA9888 chips in ath10k, from Anilkumar Kolli.

 4) Several workqueue usage cleanups, from Bhaktipriya Shridhar.

 5) Add XDP (eXpress Data Path), essentially running BPF programs on RX
    packets as soon as the device sees them, with the option to mirror
    the packet on TX via the same interface.  From Brenden Blanco and
    others.

 6) Allow qdisc/class stats dumps to run lockless, from Eric Dumazet.

 7) Add VLAN support to b53 and bcm_sf2, from Florian Fainelli.

 8) Simplify netlink conntrack entry layout, from Florian Westphal.

 9) Add ipv4 forwarding support to mlxsw spectrum driver, from Ido
    Schimmel, Yotam Gigi, and Jiri Pirko.

10) Add SKB array infrastructure and convert tun and macvtap over to it.
    From Michael S Tsirkin and Jason Wang.

11) Support qdisc packet injection in pktgen, from John Fastabend.

12) Add neighbour monitoring framework to TIPC, from Jon Paul Maloy.

13) Add NV congestion control support to TCP, from Lawrence Brakmo.

14) Add GSO support to SCTP, from Marcelo Ricardo Leitner.

15) Allow GRO and RPS to function on macsec devices, from Paolo Abeni.

16) Support MPLS over IPV4, from Simon Horman.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1622 commits)
  xgene: Fix build warning with ACPI disabled.
  be2net: perform temperature query in adapter regardless of its interface state
  l2tp: Correctly return -EBADF from pppol2tp_getname.
  net/mlx5_core/health: Remove deprecated create_singlethread_workqueue
  net: ipmr/ip6mr: update lastuse on entry change
  macsec: ensure rx_sa is set when validation is disabled
  tipc: dump monitor attributes
  tipc: add a function to get the bearer name
  tipc: get monitor threshold for the cluster
  tipc: make cluster size threshold for monitoring configurable
  tipc: introduce constants for tipc address validation
  net: neigh: disallow transition to NUD_STALE if lladdr is unchanged in neigh_update()
  MAINTAINERS: xgene: Add driver and documentation path
  Documentation: dtb: xgene: Add MDIO node
  dtb: xgene: Add MDIO node
  drivers: net: xgene: ethtool: Use phy_ethtool_gset and sset
  drivers: net: xgene: Use exported functions
  drivers: net: xgene: Enable MDIO driver
  drivers: net: xgene: Add backward compatibility
  drivers: net: phy: xgene: Add MDIO driver
  ...

1 files changed, 199 insertions, 59 deletions

diff --git a/net/batman-adv/types.h b/net/batman-adv/types.h
index 74d865a4df46..a64522c3b45d 100644
--- a/net/batman-adv/types.h
+++ b/net/batman-adv/types.h
@@ -33,6 +33,7 @@
 #include <linux/types.h>
 #include <linux/wait.h>
 #include <linux/workqueue.h>
+#include <uapi/linux/batman_adv.h>
 
 #include "packet.h"
 
@@ -709,6 +710,8 @@ struct batadv_priv_debug_log {
  * @list: list of available gateway nodes
  * @list_lock: lock protecting gw_list & curr_gw
  * @curr_gw: pointer to currently selected gateway node
+ * @mode: gateway operation: off, client or server (see batadv_gw_modes)
+ * @sel_class: gateway selection class (applies if gw_mode client)
  * @bandwidth_down: advertised uplink download bandwidth (if gw_mode server)
  * @bandwidth_up: advertised uplink upload bandwidth (if gw_mode server)
  * @reselect: bool indicating a gateway re-selection is in progress
@@ -717,6 +720,8 @@ struct batadv_priv_gw {
 	struct hlist_head list;
 	spinlock_t list_lock; /* protects gw_list & curr_gw */
 	struct batadv_gw_node __rcu *curr_gw;  /* rcu protected pointer */
+	atomic_t mode;
+	atomic_t sel_class;
 	atomic_t bandwidth_down;
 	atomic_t bandwidth_up;
 	atomic_t reselect;
@@ -753,14 +758,28 @@ struct batadv_priv_dat {
 
 #ifdef CONFIG_BATMAN_ADV_MCAST
 /**
+ * struct batadv_mcast_querier_state - IGMP/MLD querier state when bridged
+ * @exists: whether a querier exists in the mesh
+ * @shadowing: if a querier exists, whether it is potentially shadowing
+ *  multicast listeners (i.e. querier is behind our own bridge segment)
+ */
+struct batadv_mcast_querier_state {
+	bool exists;
+	bool shadowing;
+};
+
+/**
  * struct batadv_priv_mcast - per mesh interface mcast data
  * @mla_list: list of multicast addresses we are currently announcing via TT
  * @want_all_unsnoopables_list: a list of orig_nodes wanting all unsnoopable
  *  multicast traffic
  * @want_all_ipv4_list: a list of orig_nodes wanting all IPv4 multicast traffic
  * @want_all_ipv6_list: a list of orig_nodes wanting all IPv6 multicast traffic
+ * @querier_ipv4: the current state of an IGMP querier in the mesh
+ * @querier_ipv6: the current state of an MLD querier in the mesh
  * @flags: the flags we have last sent in our mcast tvlv
  * @enabled: whether the multicast tvlv is currently enabled
+ * @bridged: whether the soft interface has a bridge on top
  * @num_disabled: number of nodes that have no mcast tvlv
  * @num_want_all_unsnoopables: number of nodes wanting unsnoopable IP traffic
  * @num_want_all_ipv4: counter for items in want_all_ipv4_list
@@ -773,8 +792,11 @@ struct batadv_priv_mcast {
 	struct hlist_head want_all_unsnoopables_list;
 	struct hlist_head want_all_ipv4_list;
 	struct hlist_head want_all_ipv6_list;
+	struct batadv_mcast_querier_state querier_ipv4;
+	struct batadv_mcast_querier_state querier_ipv6;
 	u8 flags;
 	bool enabled;
+	bool bridged;
 	atomic_t num_disabled;
 	atomic_t num_want_all_unsnoopables;
 	atomic_t num_want_all_ipv4;
@@ -814,6 +836,111 @@ struct batadv_priv_nc {
 };
 
 /**
+ * struct batadv_tp_unacked - unacked packet meta-information
+ * @seqno: seqno of the unacked packet
+ * @len: length of the packet
+ * @list: list node for batadv_tp_vars::unacked_list
+ *
+ * This struct is supposed to represent a buffer unacked packet. However, since
+ * the purpose of the TP meter is to count the traffic only, there is no need to
+ * store the entire sk_buff, the starting offset and the length are enough
+ */
+struct batadv_tp_unacked {
+	u32 seqno;
+	u16 len;
+	struct list_head list;
+};
+
+/**
+ * enum batadv_tp_meter_role - Modus in tp meter session
+ * @BATADV_TP_RECEIVER: Initialized as receiver
+ * @BATADV_TP_SENDER: Initialized as sender
+ */
+enum batadv_tp_meter_role {
+	BATADV_TP_RECEIVER,
+	BATADV_TP_SENDER
+};
+
+/**
+ * struct batadv_tp_vars - tp meter private variables per session
+ * @list: list node for bat_priv::tp_list
+ * @timer: timer for ack (receiver) and retry (sender)
+ * @bat_priv: pointer to the mesh object
+ * @start_time: start time in jiffies
+ * @other_end: mac address of remote
+ * @role: receiver/sender modi
+ * @sending: sending binary semaphore: 1 if sending, 0 is not
+ * @reason: reason for a stopped session
+ * @finish_work: work item for the finishing procedure
+ * @test_length: test length in milliseconds
+ * @session: TP session identifier
+ * @icmp_uid: local ICMP "socket" index
+ * @dec_cwnd: decimal part of the cwnd used during linear growth
+ * @cwnd: current size of the congestion window
+ * @cwnd_lock: lock do protect @cwnd & @dec_cwnd
+ * @ss_threshold: Slow Start threshold. Once cwnd exceeds this value the
+ *  connection switches to the Congestion Avoidance state
+ * @last_acked: last acked byte
+ * @last_sent: last sent byte, not yet acked
+ * @tot_sent: amount of data sent/ACKed so far
+ * @dup_acks: duplicate ACKs counter
+ * @fast_recovery: true if in Fast Recovery mode
+ * @recover: last sent seqno when entering Fast Recovery
+ * @rto: sender timeout
+ * @srtt: smoothed RTT scaled by 2^3
+ * @rttvar: RTT variation scaled by 2^2
+ * @more_bytes: waiting queue anchor when waiting for more ack/retry timeout
+ * @prerandom_offset: offset inside the prerandom buffer
+ * @prerandom_lock: spinlock protecting access to prerandom_offset
+ * @last_recv: last in-order received packet
+ * @unacked_list: list of unacked packets (meta-info only)
+ * @unacked_lock: protect unacked_list
+ * @last_recv_time: time time (jiffies) a msg was received
+ * @refcount: number of context where the object is used
+ * @rcu: struct used for freeing in an RCU-safe manner
+ */
+struct batadv_tp_vars {
+	struct hlist_node list;
+	struct timer_list timer;
+	struct batadv_priv *bat_priv;
+	unsigned long start_time;
+	u8 other_end[ETH_ALEN];
+	enum batadv_tp_meter_role role;
+	atomic_t sending;
+	enum batadv_tp_meter_reason reason;
+	struct delayed_work finish_work;
+	u32 test_length;
+	u8 session[2];
+	u8 icmp_uid;
+
+	/* sender variables */
+	u16 dec_cwnd;
+	u32 cwnd;
+	spinlock_t cwnd_lock; /* Protects cwnd & dec_cwnd */
+	u32 ss_threshold;
+	atomic_t last_acked;
+	u32 last_sent;
+	atomic64_t tot_sent;
+	atomic_t dup_acks;
+	bool fast_recovery;
+	u32 recover;
+	u32 rto;
+	u32 srtt;
+	u32 rttvar;
+	wait_queue_head_t more_bytes;
+	u32 prerandom_offset;
+	spinlock_t prerandom_lock; /* Protects prerandom_offset */
+
+	/* receiver variables */
+	u32 last_recv;
+	struct list_head unacked_list;
+	spinlock_t unacked_lock; /* Protects unacked_list */
+	unsigned long last_recv_time;
+	struct kref refcount;
+	struct rcu_head rcu;
+};
+
+/**
  * struct batadv_softif_vlan - per VLAN attributes set
  * @bat_priv: pointer to the mesh object
  * @vid: VLAN identifier
@@ -867,8 +994,6 @@ struct batadv_priv_bat_v {
  *  enabled
  * @multicast_mode: Enable or disable multicast optimizations on this node's
  *  sender/originating side
- * @gw_mode: gateway operation: off, client or server (see batadv_gw_modes)
- * @gw_sel_class: gateway selection class (applies if gw_mode client)
  * @orig_interval: OGM broadcast interval in milliseconds
  * @hop_penalty: penalty which will be applied to an OGM's tq-field on every hop
  * @log_level: configured log level (see batadv_dbg_level)
@@ -883,14 +1008,17 @@ struct batadv_priv_bat_v {
  * @debug_dir: dentry for debugfs batman-adv subdirectory
  * @forw_bat_list: list of aggregated OGMs that will be forwarded
  * @forw_bcast_list: list of broadcast packets that will be rebroadcasted
+ * @tp_list: list of tp sessions
+ * @tp_num: number of currently active tp sessions
  * @orig_hash: hash table containing mesh participants (orig nodes)
  * @forw_bat_list_lock: lock protecting forw_bat_list
  * @forw_bcast_list_lock: lock protecting forw_bcast_list
+ * @tp_list_lock: spinlock protecting @tp_list
  * @orig_work: work queue callback item for orig node purging
  * @cleanup_work: work queue callback item for soft-interface deinit
  * @primary_if: one of the hard-interfaces assigned to this mesh interface
  *  becomes the primary interface
- * @bat_algo_ops: routing algorithm used by this mesh interface
+ * @algo_ops: routing algorithm used by this mesh interface
  * @softif_vlan_list: a list of softif_vlan structs, one per VLAN created on top
  *  of the mesh interface represented by this object
  * @softif_vlan_list_lock: lock protecting softif_vlan_list
@@ -924,8 +1052,6 @@ struct batadv_priv {
 #ifdef CONFIG_BATMAN_ADV_MCAST
 	atomic_t multicast_mode;
 #endif
-	atomic_t gw_mode;
-	atomic_t gw_sel_class;
 	atomic_t orig_interval;
 	atomic_t hop_penalty;
 #ifdef CONFIG_BATMAN_ADV_DEBUG
@@ -941,13 +1067,16 @@ struct batadv_priv {
 	struct dentry *debug_dir;
 	struct hlist_head forw_bat_list;
 	struct hlist_head forw_bcast_list;
+	struct hlist_head tp_list;
 	struct batadv_hashtable *orig_hash;
 	spinlock_t forw_bat_list_lock; /* protects forw_bat_list */
 	spinlock_t forw_bcast_list_lock; /* protects forw_bcast_list */
+	spinlock_t tp_list_lock; /* protects tp_list */
+	atomic_t tp_num;
 	struct delayed_work orig_work;
 	struct work_struct cleanup_work;
 	struct batadv_hard_iface __rcu *primary_if;  /* rcu protected pointer */
-	struct batadv_algo_ops *bat_algo_ops;
+	struct batadv_algo_ops *algo_ops;
 	struct hlist_head softif_vlan_list;
 	spinlock_t softif_vlan_list_lock; /* protects softif_vlan_list */
 #ifdef CONFIG_BATMAN_ADV_BLA
@@ -1265,66 +1394,77 @@ struct batadv_forw_packet {
 };
 
 /**
+ * struct batadv_algo_iface_ops - mesh algorithm callbacks (interface specific)
+ * @activate: start routing mechanisms when hard-interface is brought up
+ * @enable: init routing info when hard-interface is enabled
+ * @disable: de-init routing info when hard-interface is disabled
+ * @update_mac: (re-)init mac addresses of the protocol information
+ *  belonging to this hard-interface
+ * @primary_set: called when primary interface is selected / changed
+ */
+struct batadv_algo_iface_ops {
+	void (*activate)(struct batadv_hard_iface *hard_iface);
+	int (*enable)(struct batadv_hard_iface *hard_iface);
+	void (*disable)(struct batadv_hard_iface *hard_iface);
+	void (*update_mac)(struct batadv_hard_iface *hard_iface);
+	void (*primary_set)(struct batadv_hard_iface *hard_iface);
+};
+
+/**
+ * struct batadv_algo_neigh_ops - mesh algorithm callbacks (neighbour specific)
+ * @hardif_init: called on creation of single hop entry
+ * @cmp: compare the metrics of two neighbors for their respective outgoing
+ *  interfaces
+ * @is_similar_or_better: check if neigh1 is equally similar or better than
+ *  neigh2 for their respective outgoing interface from the metric prospective
+ * @print: print the single hop neighbor list (optional)
+ */
+struct batadv_algo_neigh_ops {
+	void (*hardif_init)(struct batadv_hardif_neigh_node *neigh);
+	int (*cmp)(struct batadv_neigh_node *neigh1,
+		   struct batadv_hard_iface *if_outgoing1,
+		   struct batadv_neigh_node *neigh2,
+		   struct batadv_hard_iface *if_outgoing2);
+	bool (*is_similar_or_better)(struct batadv_neigh_node *neigh1,
+				     struct batadv_hard_iface *if_outgoing1,
+				     struct batadv_neigh_node *neigh2,
+				     struct batadv_hard_iface *if_outgoing2);
+	void (*print)(struct batadv_priv *priv, struct seq_file *seq);
+};
+
+/**
+ * struct batadv_algo_orig_ops - mesh algorithm callbacks (originator specific)
+ * @free: free the resources allocated by the routing algorithm for an orig_node
+ *  object
+ * @add_if: ask the routing algorithm to apply the needed changes to the
+ *  orig_node due to a new hard-interface being added into the mesh
+ * @del_if: ask the routing algorithm to apply the needed changes to the
+ *  orig_node due to an hard-interface being removed from the mesh
+ * @print: print the originator table (optional)
+ */
+struct batadv_algo_orig_ops {
+	void (*free)(struct batadv_orig_node *orig_node);
+	int (*add_if)(struct batadv_orig_node *orig_node, int max_if_num);
+	int (*del_if)(struct batadv_orig_node *orig_node, int max_if_num,
+		      int del_if_num);
+	void (*print)(struct batadv_priv *priv, struct seq_file *seq,
+		      struct batadv_hard_iface *hard_iface);
+};
+
+/**
  * struct batadv_algo_ops - mesh algorithm callbacks
  * @list: list node for the batadv_algo_list
  * @name: name of the algorithm
- * @bat_iface_activate: start routing mechanisms when hard-interface is brought
- *  up
- * @bat_iface_enable: init routing info when hard-interface is enabled
- * @bat_iface_disable: de-init routing info when hard-interface is disabled
- * @bat_iface_update_mac: (re-)init mac addresses of the protocol information
- *  belonging to this hard-interface
- * @bat_primary_iface_set: called when primary interface is selected / changed
- * @bat_ogm_schedule: prepare a new outgoing OGM for the send queue
- * @bat_ogm_emit: send scheduled OGM
- * @bat_hardif_neigh_init: called on creation of single hop entry
- * @bat_neigh_cmp: compare the metrics of two neighbors for their respective
- *  outgoing interfaces
- * @bat_neigh_is_similar_or_better: check if neigh1 is equally similar or
- *  better than neigh2 for their respective outgoing interface from the metric
- *  prospective
- * @bat_neigh_print: print the single hop neighbor list (optional)
- * @bat_neigh_free: free the resources allocated by the routing algorithm for a
- *  neigh_node object
- * @bat_orig_print: print the originator table (optional)
- * @bat_orig_free: free the resources allocated by the routing algorithm for an
- *  orig_node object
- * @bat_orig_add_if: ask the routing algorithm to apply the needed changes to
- *  the orig_node due to a new hard-interface being added into the mesh
- * @bat_orig_del_if: ask the routing algorithm to apply the needed changes to
- *  the orig_node due to an hard-interface being removed from the mesh
+ * @iface: callbacks related to interface handling
+ * @neigh: callbacks related to neighbors handling
+ * @orig: callbacks related to originators handling
  */
 struct batadv_algo_ops {
 	struct hlist_node list;
 	char *name;
-	void (*bat_iface_activate)(struct batadv_hard_iface *hard_iface);
-	int (*bat_iface_enable)(struct batadv_hard_iface *hard_iface);
-	void (*bat_iface_disable)(struct batadv_hard_iface *hard_iface);
-	void (*bat_iface_update_mac)(struct batadv_hard_iface *hard_iface);
-	void (*bat_primary_iface_set)(struct batadv_hard_iface *hard_iface);
-	void (*bat_ogm_schedule)(struct batadv_hard_iface *hard_iface);
-	void (*bat_ogm_emit)(struct batadv_forw_packet *forw_packet);
-	/* neigh_node handling API */
-	void (*bat_hardif_neigh_init)(struct batadv_hardif_neigh_node *neigh);
-	int (*bat_neigh_cmp)(struct batadv_neigh_node *neigh1,
-			     struct batadv_hard_iface *if_outgoing1,
-			     struct batadv_neigh_node *neigh2,
-			     struct batadv_hard_iface *if_outgoing2);
-	bool (*bat_neigh_is_similar_or_better)
-		(struct batadv_neigh_node *neigh1,
-		 struct batadv_hard_iface *if_outgoing1,
-		 struct batadv_neigh_node *neigh2,
-		 struct batadv_hard_iface *if_outgoing2);
-	void (*bat_neigh_print)(struct batadv_priv *priv, struct seq_file *seq);
-	void (*bat_neigh_free)(struct batadv_neigh_node *neigh);
-	/* orig_node handling API */
-	void (*bat_orig_print)(struct batadv_priv *priv, struct seq_file *seq,
-			       struct batadv_hard_iface *hard_iface);
-	void (*bat_orig_free)(struct batadv_orig_node *orig_node);
-	int (*bat_orig_add_if)(struct batadv_orig_node *orig_node,
-			       int max_if_num);
-	int (*bat_orig_del_if)(struct batadv_orig_node *orig_node,
-			       int max_if_num, int del_if_num);
+	struct batadv_algo_iface_ops iface;
+	struct batadv_algo_neigh_ops neigh;
+	struct batadv_algo_orig_ops orig;
 };
 
 /**