Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-nextgrafted

Pull networking updates from Jakub Kicinski:
 "Core:

   - Add dedicated kmem_cache for typical/small skb->head, avoid having
     to access struct page at kfree time, and improve memory use.

   - Introduce sysctl to set default RPS configuration for new netdevs.

   - Define Netlink protocol specification format which can be used to
     describe messages used by each family and auto-generate parsers.
     Add tools for generating kernel data structures and uAPI headers.

   - Expose all net/core sysctls inside netns.

   - Remove 4s sleep in netpoll if carrier is instantly detected on
     boot.

   - Add configurable limit of MDB entries per port, and port-vlan.

   - Continue populating drop reasons throughout the stack.

   - Retire a handful of legacy Qdiscs and classifiers.

  Protocols:

   - Support IPv4 big TCP (TSO frames larger than 64kB).

   - Add IP_LOCAL_PORT_RANGE socket option, to control local port range
     on socket by socket basis.

   - Track and report in procfs number of MPTCP sockets used.

   - Support mixing IPv4 and IPv6 flows in the in-kernel MPTCP path
     manager.

   - IPv6: don't check net.ipv6.route.max_size and rely on garbage
     collection to free memory (similarly to IPv4).

   - Support Penultimate Segment Pop (PSP) flavor in SRv6 (RFC8986).

   - ICMP: add per-rate limit counters.

   - Add support for user scanning requests in ieee802154.

   - Remove static WEP support.

   - Support minimal Wi-Fi 7 Extremely High Throughput (EHT) rate
     reporting.

   - WiFi 7 EHT channel puncturing support (client & AP).

  BPF:

   - Add a rbtree data structure following the "next-gen data structure"
     precedent set by recently added linked list, that is, by using
     kfunc + kptr instead of adding a new BPF map type.

   - Expose XDP hints via kfuncs with initial support for RX hash and
     timestamp metadata.

   - Add BPF_F_NO_TUNNEL_KEY extension to bpf_skb_set_tunnel_key to
     better support decap on GRE tunnel devices not operating in collect
     metadata.

   - Improve x86 JIT's codegen for PROBE_MEM runtime error checks.

   - Remove the need for trace_printk_lock for bpf_trace_printk and
     bpf_trace_vprintk helpers.

   - Extend libbpf's bpf_tracing.h support for tracing arguments of
     kprobes/uprobes and syscall as a special case.

   - Significantly reduce the search time for module symbols by
     livepatch and BPF.

   - Enable cpumasks to be used as kptrs, which is useful for tracing
     programs tracking which tasks end up running on which CPUs in
     different time intervals.

   - Add support for BPF trampoline on s390x and riscv64.

   - Add capability to export the XDP features supported by the NIC.

   - Add __bpf_kfunc tag for marking kernel functions as kfuncs.

   - Add cgroup.memory=nobpf kernel parameter option to disable BPF
     memory accounting for container environments.

  Netfilter:

   - Remove the CLUSTERIP target. It has been marked as obsolete for
     years, and we still have WARN splats wrt races of the out-of-band
     /proc interface installed by this target.

   - Add 'destroy' commands to nf_tables. They are identical to the
     existing 'delete' commands, but do not return an error if the
     referenced object (set, chain, rule...) did not exist.

  Driver API:

   - Improve cpumask_local_spread() locality to help NICs set the right
     IRQ affinity on AMD platforms.

   - Separate C22 and C45 MDIO bus transactions more clearly.

   - Introduce new DCB table to control DSCP rewrite on egress.

   - Support configuration of Physical Layer Collision Avoidance (PLCA)
     Reconciliation Sublayer (RS) (802.3cg-2019). Modern version of
     shared medium Ethernet.

   - Support for MAC Merge layer (IEEE 802.3-2018 clause 99). Allowing
     preemption of low priority frames by high priority frames.

   - Add support for controlling MACSec offload using netlink SET.

   - Rework devlink instance refcounts to allow registration and
     de-registration under the instance lock. Split the code into
     multiple files, drop some of the unnecessarily granular locks and
     factor out common parts of netlink operation handling.

   - Add TX frame aggregation parameters (for USB drivers).

   - Add a new attr TCA_EXT_WARN_MSG to report TC (offload) warning
     messages with notifications for debug.

   - Allow offloading of UDP NEW connections via act_ct.

   - Add support for per action HW stats in TC.

   - Support hardware miss to TC action (continue processing in SW from
     a specific point in the action chain).

   - Warn if old Wireless Extension user space interface is used with
     modern cfg80211/mac80211 drivers. Do not support Wireless
     Extensions for Wi-Fi 7 devices at all. Everyone should switch to
     using nl80211 interface instead.

   - Improve the CAN bit timing configuration. Use extack to return
     error messages directly to user space, update the SJW handling,
     including the definition of a new default value that will benefit
     CAN-FD controllers, by increasing their oscillator tolerance.

  New hardware / drivers:

   - Ethernet:
      - nVidia BlueField-3 support (control traffic driver)
      - Ethernet support for imx93 SoCs
      - Motorcomm yt8531 gigabit Ethernet PHY
      - onsemi NCN26000 10BASE-T1S PHY (with support for PLCA)
      - Microchip LAN8841 PHY (incl. cable diagnostics and PTP)
      - Amlogic gxl MDIO mux

   - WiFi:
      - RealTek RTL8188EU (rtl8xxxu)
      - Qualcomm Wi-Fi 7 devices (ath12k)

   - CAN:
      - Renesas R-Car V4H

  Drivers:

   - Bluetooth:
      - Set Per Platform Antenna Gain (PPAG) for Intel controllers.

   - Ethernet NICs:
      - Intel (1G, igc):
         - support TSN / Qbv / packet scheduling features of i226 model
      - Intel (100G, ice):
         - use GNSS subsystem instead of TTY
         - multi-buffer XDP support
         - extend support for GPIO pins to E823 devices
      - nVidia/Mellanox:
         - update the shared buffer configuration on PFC commands
         - implement PTP adjphase function for HW offset control
         - TC support for Geneve and GRE with VF tunnel offload
         - more efficient crypto key management method
         - multi-port eswitch support
      - Netronome/Corigine:
         - add DCB IEEE support
         - support IPsec offloading for NFP3800
      - Freescale/NXP (enetc):
         - support XDP_REDIRECT for XDP non-linear buffers
         - improve reconfig, avoid link flap and waiting for idle
         - support MAC Merge layer
      - Other NICs:
         - sfc/ef100: add basic devlink support for ef100
         - ionic: rx_push mode operation (writing descriptors via MMIO)
         - bnxt: use the auxiliary bus abstraction for RDMA
         - r8169: disable ASPM and reset bus in case of tx timeout
         - cpsw: support QSGMII mode for J721e CPSW9G
         - cpts: support pulse-per-second output
         - ngbe: add an mdio bus driver
         - usbnet: optimize usbnet_bh() by avoiding unnecessary queuing
         - r8152: handle devices with FW with NCM support
         - amd-xgbe: support 10Mbps, 2.5GbE speeds and rx-adaptation
         - virtio-net: support multi buffer XDP
         - virtio/vsock: replace virtio_vsock_pkt with sk_buff
         - tsnep: XDP support

   - Ethernet high-speed switches:
      - nVidia/Mellanox (mlxsw):
         - add support for latency TLV (in FW control messages)
      - Microchip (sparx5):
         - separate explicit and implicit traffic forwarding rules, make
           the implicit rules always active
         - add support for egress DSCP rewrite
         - IS0 VCAP support (Ingress Classification)
         - IS2 VCAP filters (protos, L3 addrs, L4 ports, flags, ToS
           etc.)
         - ES2 VCAP support (Egress Access Control)
         - support for Per-Stream Filtering and Policing (802.1Q,
           8.6.5.1)

   - Ethernet embedded switches:
      - Marvell (mv88e6xxx):
         - add MAB (port auth) offload support
         - enable PTP receive for mv88e6390
      - NXP (ocelot):
         - support MAC Merge layer
         - support for the the vsc7512 internal copper phys
      - Microchip:
         - lan9303: convert to PHYLINK
         - lan966x: support TC flower filter statistics
         - lan937x: PTP support for KSZ9563/KSZ8563 and LAN937x
         - lan937x: support Credit Based Shaper configuration
         - ksz9477: support Energy Efficient Ethernet
      - other:
         - qca8k: convert to regmap read/write API, use bulk operations
         - rswitch: Improve TX timestamp accuracy

   - Intel WiFi (iwlwifi):
      - EHT (Wi-Fi 7) rate reporting
      - STEP equalizer support: transfer some STEP (connection to radio
        on platforms with integrated wifi) related parameters from the
        BIOS to the firmware.

   - Qualcomm 802.11ax WiFi (ath11k):
      - IPQ5018 support
      - Fine Timing Measurement (FTM) responder role support
      - channel 177 support

   - MediaTek WiFi (mt76):
      - per-PHY LED support
      - mt7996: EHT (Wi-Fi 7) support
      - Wireless Ethernet Dispatch (WED) reset support
      - switch to using page pool allocator

   - RealTek WiFi (rtw89):
      - support new version of Bluetooth co-existance

   - Mobile:
      - rmnet: support TX aggregation"

* tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1872 commits)
  page_pool: add a comment explaining the fragment counter usage
  net: ethtool: fix __ethtool_dev_mm_supported() implementation
  ethtool: pse-pd: Fix double word in comments
  xsk: add linux/vmalloc.h to xsk.c
  sefltests: netdevsim: wait for devlink instance after netns removal
  selftest: fib_tests: Always cleanup before exit
  net/mlx5e: Align IPsec ASO result memory to be as required by hardware
  net/mlx5e: TC, Set CT miss to the specific ct action instance
  net/mlx5e: Rename CHAIN_TO_REG to MAPPED_OBJ_TO_REG
  net/mlx5: Refactor tc miss handling to a single function
  net/mlx5: Kconfig: Make tc offload depend on tc skb extension
  net/sched: flower: Support hardware miss to tc action
  net/sched: flower: Move filter handle initialization earlier
  net/sched: cls_api: Support hardware miss to tc action
  net/sched: Rename user cookie and act cookie
  sfc: fix builds without CONFIG_RTC_LIB
  sfc: clean up some inconsistent indentings
  net/mlx4_en: Introduce flexible array to silence overflow warning
  net: lan966x: Fix possible deadlock inside PTP
  net/ulp: Remove redundant ->clone() test in inet_clone_ulp().
  ...

1 files changed, 350 insertions, 0 deletions

diff --git a/net/mac80211/mesh.h b/net/mac80211/mesh.h
new file mode 100644
index 000000000..b2b717a78
--- /dev/null
+++ b/net/mac80211/mesh.h
@@ -0,0 +1,350 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (c) 2008, 2009 open80211s Ltd.
+ * Authors:    Luis Carlos Cobo <luisca@cozybit.com>
+ *             Javier Cardona <javier@cozybit.com>
+ */
+
+#ifndef IEEE80211S_H
+#define IEEE80211S_H
+
+#include <linux/types.h>
+#include <linux/jhash.h>
+#include "ieee80211_i.h"
+
+
+/* Data structures */
+
+/**
+ * enum mesh_path_flags - mac80211 mesh path flags
+ *
+ * @MESH_PATH_ACTIVE: the mesh path can be used for forwarding
+ * @MESH_PATH_RESOLVING: the discovery process is running for this mesh path
+ * @MESH_PATH_SN_VALID: the mesh path contains a valid destination sequence
+ *	number
+ * @MESH_PATH_FIXED: the mesh path has been manually set and should not be
+ *	modified
+ * @MESH_PATH_RESOLVED: the mesh path can has been resolved
+ * @MESH_PATH_REQ_QUEUED: there is an unsent path request for this destination
+ *	already queued up, waiting for the discovery process to start.
+ * @MESH_PATH_DELETED: the mesh path has been deleted and should no longer
+ *	be used
+ *
+ * MESH_PATH_RESOLVED is used by the mesh path timer to
+ * decide when to stop or cancel the mesh path discovery.
+ */
+enum mesh_path_flags {
+	MESH_PATH_ACTIVE =	BIT(0),
+	MESH_PATH_RESOLVING =	BIT(1),
+	MESH_PATH_SN_VALID =	BIT(2),
+	MESH_PATH_FIXED	=	BIT(3),
+	MESH_PATH_RESOLVED =	BIT(4),
+	MESH_PATH_REQ_QUEUED =	BIT(5),
+	MESH_PATH_DELETED =	BIT(6),
+};
+
+/**
+ * enum mesh_deferred_task_flags - mac80211 mesh deferred tasks
+ *
+ *
+ *
+ * @MESH_WORK_HOUSEKEEPING: run the periodic mesh housekeeping tasks
+ * @MESH_WORK_ROOT: the mesh root station needs to send a frame
+ * @MESH_WORK_DRIFT_ADJUST: time to compensate for clock drift relative to other
+ * mesh nodes
+ * @MESH_WORK_MBSS_CHANGED: rebuild beacon and notify driver of BSS changes
+ */
+enum mesh_deferred_task_flags {
+	MESH_WORK_HOUSEKEEPING,
+	MESH_WORK_ROOT,
+	MESH_WORK_DRIFT_ADJUST,
+	MESH_WORK_MBSS_CHANGED,
+};
+
+/**
+ * struct mesh_path - mac80211 mesh path structure
+ *
+ * @dst: mesh path destination mac address
+ * @mpp: mesh proxy mac address
+ * @rhash: rhashtable list pointer
+ * @walk_list: linked list containing all mesh_path objects.
+ * @gate_list: list pointer for known gates list
+ * @sdata: mesh subif
+ * @next_hop: mesh neighbor to which frames for this destination will be
+ *	forwarded
+ * @timer: mesh path discovery timer
+ * @frame_queue: pending queue for frames sent to this destination while the
+ *	path is unresolved
+ * @rcu: rcu head for freeing mesh path
+ * @sn: target sequence number
+ * @metric: current metric to this destination
+ * @hop_count: hops to destination
+ * @exp_time: in jiffies, when the path will expire or when it expired
+ * @discovery_timeout: timeout (lapse in jiffies) used for the last discovery
+ *	retry
+ * @discovery_retries: number of discovery retries
+ * @flags: mesh path flags, as specified on &enum mesh_path_flags
+ * @state_lock: mesh path state lock used to protect changes to the
+ * mpath itself.  No need to take this lock when adding or removing
+ * an mpath to a hash bucket on a path table.
+ * @rann_snd_addr: the RANN sender address
+ * @rann_metric: the aggregated path metric towards the root node
+ * @last_preq_to_root: Timestamp of last PREQ sent to root
+ * @is_root: the destination station of this path is a root node
+ * @is_gate: the destination station of this path is a mesh gate
+ * @path_change_count: the number of path changes to destination
+ *
+ *
+ * The dst address is unique in the mesh path table. Since the mesh_path is
+ * protected by RCU, deleting the next_hop STA must remove / substitute the
+ * mesh_path structure and wait until that is no longer reachable before
+ * destroying the STA completely.
+ */
+struct mesh_path {
+	u8 dst[ETH_ALEN];
+	u8 mpp[ETH_ALEN];	/* used for MPP or MAP */
+	struct rhash_head rhash;
+	struct hlist_node walk_list;
+	struct hlist_node gate_list;
+	struct ieee80211_sub_if_data *sdata;
+	struct sta_info __rcu *next_hop;
+	struct timer_list timer;
+	struct sk_buff_head frame_queue;
+	struct rcu_head rcu;
+	u32 sn;
+	u32 metric;
+	u8 hop_count;
+	unsigned long exp_time;
+	u32 discovery_timeout;
+	u8 discovery_retries;
+	enum mesh_path_flags flags;
+	spinlock_t state_lock;
+	u8 rann_snd_addr[ETH_ALEN];
+	u32 rann_metric;
+	unsigned long last_preq_to_root;
+	bool is_root;
+	bool is_gate;
+	u32 path_change_count;
+};
+
+/* Recent multicast cache */
+/* RMC_BUCKETS must be a power of 2, maximum 256 */
+#define RMC_BUCKETS		256
+#define RMC_QUEUE_MAX_LEN	4
+#define RMC_TIMEOUT		(3 * HZ)
+
+/**
+ * struct rmc_entry - entry in the Recent Multicast Cache
+ *
+ * @seqnum: mesh sequence number of the frame
+ * @exp_time: expiration time of the entry, in jiffies
+ * @sa: source address of the frame
+ * @list: hashtable list pointer
+ *
+ * The Recent Multicast Cache keeps track of the latest multicast frames that
+ * have been received by a mesh interface and discards received multicast frames
+ * that are found in the cache.
+ */
+struct rmc_entry {
+	struct hlist_node list;
+	unsigned long exp_time;
+	u32 seqnum;
+	u8 sa[ETH_ALEN];
+};
+
+struct mesh_rmc {
+	struct hlist_head bucket[RMC_BUCKETS];
+	u32 idx_mask;
+};
+
+#define IEEE80211_MESH_HOUSEKEEPING_INTERVAL (60 * HZ)
+
+#define MESH_PATH_EXPIRE (600 * HZ)
+
+/* Default maximum number of plinks per interface */
+#define MESH_MAX_PLINKS		256
+
+/* Maximum number of paths per interface */
+#define MESH_MAX_MPATHS		1024
+
+/* Number of frames buffered per destination for unresolved destinations */
+#define MESH_FRAME_QUEUE_LEN	10
+
+/* Public interfaces */
+/* Various */
+int ieee80211_fill_mesh_addresses(struct ieee80211_hdr *hdr, __le16 *fc,
+				  const u8 *da, const u8 *sa);
+unsigned int ieee80211_new_mesh_header(struct ieee80211_sub_if_data *sdata,
+				       struct ieee80211s_hdr *meshhdr,
+				       const char *addr4or5, const char *addr6);
+int mesh_rmc_check(struct ieee80211_sub_if_data *sdata,
+		   const u8 *addr, struct ieee80211s_hdr *mesh_hdr);
+bool mesh_matches_local(struct ieee80211_sub_if_data *sdata,
+			struct ieee802_11_elems *ie);
+void mesh_ids_set_default(struct ieee80211_if_mesh *mesh);
+int mesh_add_meshconf_ie(struct ieee80211_sub_if_data *sdata,
+			 struct sk_buff *skb);
+int mesh_add_meshid_ie(struct ieee80211_sub_if_data *sdata,
+		       struct sk_buff *skb);
+int mesh_add_rsn_ie(struct ieee80211_sub_if_data *sdata,
+		    struct sk_buff *skb);
+int mesh_add_vendor_ies(struct ieee80211_sub_if_data *sdata,
+			struct sk_buff *skb);
+int mesh_add_ht_cap_ie(struct ieee80211_sub_if_data *sdata,
+		       struct sk_buff *skb);
+int mesh_add_ht_oper_ie(struct ieee80211_sub_if_data *sdata,
+			struct sk_buff *skb);
+int mesh_add_vht_cap_ie(struct ieee80211_sub_if_data *sdata,
+			struct sk_buff *skb);
+int mesh_add_vht_oper_ie(struct ieee80211_sub_if_data *sdata,
+			 struct sk_buff *skb);
+int mesh_add_he_cap_ie(struct ieee80211_sub_if_data *sdata,
+		       struct sk_buff *skb, u8 ie_len);
+int mesh_add_he_oper_ie(struct ieee80211_sub_if_data *sdata,
+			struct sk_buff *skb);
+int mesh_add_he_6ghz_cap_ie(struct ieee80211_sub_if_data *sdata,
+			    struct sk_buff *skb);
+void mesh_rmc_free(struct ieee80211_sub_if_data *sdata);
+int mesh_rmc_init(struct ieee80211_sub_if_data *sdata);
+void ieee80211s_init(void);
+void ieee80211s_update_metric(struct ieee80211_local *local,
+			      struct sta_info *sta,
+			      struct ieee80211_tx_status *st);
+void ieee80211_mesh_init_sdata(struct ieee80211_sub_if_data *sdata);
+void ieee80211_mesh_teardown_sdata(struct ieee80211_sub_if_data *sdata);
+int ieee80211_start_mesh(struct ieee80211_sub_if_data *sdata);
+void ieee80211_stop_mesh(struct ieee80211_sub_if_data *sdata);
+void ieee80211_mesh_root_setup(struct ieee80211_if_mesh *ifmsh);
+const struct ieee80211_mesh_sync_ops *ieee80211_mesh_sync_ops_get(u8 method);
+/* wrapper for ieee80211_bss_info_change_notify() */
+void ieee80211_mbss_info_change_notify(struct ieee80211_sub_if_data *sdata,
+				       u32 changed);
+
+/* mesh power save */
+u32 ieee80211_mps_local_status_update(struct ieee80211_sub_if_data *sdata);
+u32 ieee80211_mps_set_sta_local_pm(struct sta_info *sta,
+				   enum nl80211_mesh_power_mode pm);
+void ieee80211_mps_set_frame_flags(struct ieee80211_sub_if_data *sdata,
+				   struct sta_info *sta,
+				   struct ieee80211_hdr *hdr);
+void ieee80211_mps_sta_status_update(struct sta_info *sta);
+void ieee80211_mps_rx_h_sta_process(struct sta_info *sta,
+				    struct ieee80211_hdr *hdr);
+void ieee80211_mpsp_trigger_process(u8 *qc, struct sta_info *sta,
+				    bool tx, bool acked);
+void ieee80211_mps_frame_release(struct sta_info *sta,
+				 struct ieee802_11_elems *elems);
+
+/* Mesh paths */
+int mesh_nexthop_lookup(struct ieee80211_sub_if_data *sdata,
+			struct sk_buff *skb);
+int mesh_nexthop_resolve(struct ieee80211_sub_if_data *sdata,
+			 struct sk_buff *skb);
+void mesh_path_start_discovery(struct ieee80211_sub_if_data *sdata);
+struct mesh_path *mesh_path_lookup(struct ieee80211_sub_if_data *sdata,
+				   const u8 *dst);
+struct mesh_path *mpp_path_lookup(struct ieee80211_sub_if_data *sdata,
+				  const u8 *dst);
+int mpp_path_add(struct ieee80211_sub_if_data *sdata,
+		 const u8 *dst, const u8 *mpp);
+struct mesh_path *
+mesh_path_lookup_by_idx(struct ieee80211_sub_if_data *sdata, int idx);
+struct mesh_path *
+mpp_path_lookup_by_idx(struct ieee80211_sub_if_data *sdata, int idx);
+void mesh_path_fix_nexthop(struct mesh_path *mpath, struct sta_info *next_hop);
+void mesh_path_expire(struct ieee80211_sub_if_data *sdata);
+void mesh_rx_path_sel_frame(struct ieee80211_sub_if_data *sdata,
+			    struct ieee80211_mgmt *mgmt, size_t len);
+struct mesh_path *
+mesh_path_add(struct ieee80211_sub_if_data *sdata, const u8 *dst);
+
+int mesh_path_add_gate(struct mesh_path *mpath);
+int mesh_path_send_to_gates(struct mesh_path *mpath);
+int mesh_gate_num(struct ieee80211_sub_if_data *sdata);
+u32 airtime_link_metric_get(struct ieee80211_local *local,
+			    struct sta_info *sta);
+
+/* Mesh plinks */
+void mesh_neighbour_update(struct ieee80211_sub_if_data *sdata,
+			   u8 *hw_addr, struct ieee802_11_elems *ie,
+			   struct ieee80211_rx_status *rx_status);
+bool mesh_peer_accepts_plinks(struct ieee802_11_elems *ie);
+u32 mesh_accept_plinks_update(struct ieee80211_sub_if_data *sdata);
+void mesh_plink_timer(struct timer_list *t);
+void mesh_plink_broken(struct sta_info *sta);
+u32 mesh_plink_deactivate(struct sta_info *sta);
+u32 mesh_plink_open(struct sta_info *sta);
+u32 mesh_plink_block(struct sta_info *sta);
+void mesh_rx_plink_frame(struct ieee80211_sub_if_data *sdata,
+			 struct ieee80211_mgmt *mgmt, size_t len,
+			 struct ieee80211_rx_status *rx_status);
+void mesh_sta_cleanup(struct sta_info *sta);
+
+/* Private interfaces */
+/* Mesh paths */
+int mesh_path_error_tx(struct ieee80211_sub_if_data *sdata,
+		       u8 ttl, const u8 *target, u32 target_sn,
+		       u16 target_rcode, const u8 *ra);
+void mesh_path_assign_nexthop(struct mesh_path *mpath, struct sta_info *sta);
+void mesh_path_flush_pending(struct mesh_path *mpath);
+void mesh_path_tx_pending(struct mesh_path *mpath);
+void mesh_pathtbl_init(struct ieee80211_sub_if_data *sdata);
+void mesh_pathtbl_unregister(struct ieee80211_sub_if_data *sdata);
+int mesh_path_del(struct ieee80211_sub_if_data *sdata, const u8 *addr);
+void mesh_path_timer(struct timer_list *t);
+void mesh_path_flush_by_nexthop(struct sta_info *sta);
+void mesh_path_discard_frame(struct ieee80211_sub_if_data *sdata,
+			     struct sk_buff *skb);
+void mesh_path_tx_root_frame(struct ieee80211_sub_if_data *sdata);
+
+bool mesh_action_is_path_sel(struct ieee80211_mgmt *mgmt);
+
+#ifdef CONFIG_MAC80211_MESH
+static inline
+u32 mesh_plink_inc_estab_count(struct ieee80211_sub_if_data *sdata)
+{
+	atomic_inc(&sdata->u.mesh.estab_plinks);
+	return mesh_accept_plinks_update(sdata) | BSS_CHANGED_BEACON;
+}
+
+static inline
+u32 mesh_plink_dec_estab_count(struct ieee80211_sub_if_data *sdata)
+{
+	atomic_dec(&sdata->u.mesh.estab_plinks);
+	return mesh_accept_plinks_update(sdata) | BSS_CHANGED_BEACON;
+}
+
+static inline int mesh_plink_free_count(struct ieee80211_sub_if_data *sdata)
+{
+	return sdata->u.mesh.mshcfg.dot11MeshMaxPeerLinks -
+	       atomic_read(&sdata->u.mesh.estab_plinks);
+}
+
+static inline bool mesh_plink_availables(struct ieee80211_sub_if_data *sdata)
+{
+	return (min_t(long, mesh_plink_free_count(sdata),
+		   MESH_MAX_PLINKS - sdata->local->num_sta)) > 0;
+}
+
+static inline void mesh_path_activate(struct mesh_path *mpath)
+{
+	mpath->flags |= MESH_PATH_ACTIVE | MESH_PATH_RESOLVED;
+}
+
+static inline bool mesh_path_sel_is_hwmp(struct ieee80211_sub_if_data *sdata)
+{
+	return sdata->u.mesh.mesh_pp_id == IEEE80211_PATH_PROTOCOL_HWMP;
+}
+
+void mesh_path_flush_by_iface(struct ieee80211_sub_if_data *sdata);
+void mesh_sync_adjust_tsf(struct ieee80211_sub_if_data *sdata);
+void ieee80211s_stop(void);
+#else
+static inline bool mesh_path_sel_is_hwmp(struct ieee80211_sub_if_data *sdata)
+{ return false; }
+static inline void mesh_path_flush_by_iface(struct ieee80211_sub_if_data *sdata)
+{}
+static inline void ieee80211s_stop(void) {}
+#endif
+
+#endif /* IEEE80211S_H */