mesh.c | Explore in Territory

// SPDX-License-Identifier: GPL-2.0-only
/*
 * Copyright (c) 2008, 2009 open80211s Ltd.
 * Copyright (C) 2018 - 2024 Intel Corporation
 * Authors:    Luis Carlos Cobo <[email protected]>
 * 	       Javier Cardona <[email protected]>
 */

#include <linux/slab.h>
#include <asm/unaligned.h>
#include "ieee80211_i.h"
#include "mesh.h"
#include "wme.h"
#include "driver-ops.h"

static int mesh_allocated;
static struct kmem_cache *rm_cache;

bool mesh_action_is_path_sel(struct ieee80211_mgmt *mgmt)
{ … }

void ieee80211s_init(void)
{ … }

void ieee80211s_stop(void)
{ … }

static void ieee80211_mesh_housekeeping_timer(struct timer_list *t)
{ … }

/**
 * mesh_matches_local - check if the config of a mesh point matches ours
 *
 * @sdata: local mesh subif
 * @ie: information elements of a management frame from the mesh peer
 *
 * This function checks if the mesh configuration of a mesh point matches the
 * local mesh configuration, i.e. if both nodes belong to the same mesh network.
 *
 * Returns: %true if both nodes belong to the same mesh
 */
bool mesh_matches_local(struct ieee80211_sub_if_data *sdata,
			struct ieee802_11_elems *ie)
{ … }

/**
 * mesh_peer_accepts_plinks - check if an mp is willing to establish peer links
 *
 * @ie: information elements of a management frame from the mesh peer
 *
 * Returns: %true if the mesh peer is willing to establish peer links
 */
bool mesh_peer_accepts_plinks(struct ieee802_11_elems *ie)
{ … }

/**
 * mesh_accept_plinks_update - update accepting_plink in local mesh beacons
 *
 * @sdata: mesh interface in which mesh beacons are going to be updated
 *
 * Returns: beacon changed flag if the beacon content changed.
 */
u64 mesh_accept_plinks_update(struct ieee80211_sub_if_data *sdata)
{ … }

/*
 * mesh_sta_cleanup - clean up any mesh sta state
 *
 * @sta: mesh sta to clean up.
 */
void mesh_sta_cleanup(struct sta_info *sta)
{ … }

int mesh_rmc_init(struct ieee80211_sub_if_data *sdata)
{ … }

void mesh_rmc_free(struct ieee80211_sub_if_data *sdata)
{ … }

/**
 * mesh_rmc_check - Check frame in recent multicast cache and add if absent.
 *
 * @sdata:	interface
 * @sa:		source address
 * @mesh_hdr:	mesh_header
 *
 * Returns: 0 if the frame is not in the cache, nonzero otherwise.
 *
 * Checks using the source address and the mesh sequence number if we have
 * received this frame lately. If the frame is not in the cache, it is added to
 * it.
 */
int mesh_rmc_check(struct ieee80211_sub_if_data *sdata,
		   const u8 *sa, struct ieee80211s_hdr *mesh_hdr)
{ … }

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)
{ … }

static int mesh_add_awake_window_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_rsn_ie(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb)
{ … }

static int mesh_add_ds_params_ie(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)
{ … }

int mesh_add_eht_cap_ie(struct ieee80211_sub_if_data *sdata,
			struct sk_buff *skb, u8 ie_len)
{ … }

int mesh_add_eht_oper_ie(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb)
{ … }

static void ieee80211_mesh_path_timer(struct timer_list *t)
{ … }

static void ieee80211_mesh_path_root_timer(struct timer_list *t)
{ … }

void ieee80211_mesh_root_setup(struct ieee80211_if_mesh *ifmsh)
{ … }

static void
ieee80211_mesh_update_bss_params(struct ieee80211_sub_if_data *sdata,
				 u8 *ie, u8 ie_len)
{ … }

bool ieee80211_mesh_xmit_fast(struct ieee80211_sub_if_data *sdata,
			      struct sk_buff *skb, u32 ctrl_flags)
{ … }

/**
 * ieee80211_fill_mesh_addresses - fill addresses of a locally originated mesh frame
 * @hdr:	802.11 frame header
 * @fc:		frame control field
 * @meshda:	destination address in the mesh
 * @meshsa:	source address in the mesh.  Same as TA, as frame is
 *              locally originated.
 *
 * Returns: the length of the 802.11 frame header (excludes mesh control header)
 */
int ieee80211_fill_mesh_addresses(struct ieee80211_hdr *hdr, __le16 *fc,
				  const u8 *meshda, const u8 *meshsa)
{ … }

/**
 * ieee80211_new_mesh_header - create a new mesh header
 * @sdata:	mesh interface to be used
 * @meshhdr:    uninitialized mesh header
 * @addr4or5:   1st address in the ae header, which may correspond to address 4
 *              (if addr6 is NULL) or address 5 (if addr6 is present). It may
 *              be NULL.
 * @addr6:	2nd address in the ae header, which corresponds to addr6 of the
 *              mesh frame
 *
 * Returns: the header length
 */
unsigned int ieee80211_new_mesh_header(struct ieee80211_sub_if_data *sdata,
				       struct ieee80211s_hdr *meshhdr,
				       const char *addr4or5, const char *addr6)
{ … }

static void ieee80211_mesh_housekeeping(struct ieee80211_sub_if_data *sdata)
{ … }

static void ieee80211_mesh_rootpath(struct ieee80211_sub_if_data *sdata)
{ … }

static int
ieee80211_mesh_build_beacon(struct ieee80211_if_mesh *ifmsh)
{ … }

static int
ieee80211_mesh_rebuild_beacon(struct ieee80211_sub_if_data *sdata)
{ … }

void ieee80211_mbss_info_change_notify(struct ieee80211_sub_if_data *sdata,
				       u64 changed)
{ … }

int ieee80211_start_mesh(struct ieee80211_sub_if_data *sdata)
{ … }

void ieee80211_stop_mesh(struct ieee80211_sub_if_data *sdata)
{ … }

static void ieee80211_mesh_csa_mark_radar(struct ieee80211_sub_if_data *sdata)
{ … }

static bool
ieee80211_mesh_process_chnswitch(struct ieee80211_sub_if_data *sdata,
				 struct ieee802_11_elems *elems, bool beacon)
{ … }

static void
ieee80211_mesh_rx_probe_req(struct ieee80211_sub_if_data *sdata,
			    struct ieee80211_mgmt *mgmt, size_t len)
{ … }

static void ieee80211_mesh_rx_bcn_presp(struct ieee80211_sub_if_data *sdata,
					u16 stype,
					struct ieee80211_mgmt *mgmt,
					size_t len,
					struct ieee80211_rx_status *rx_status)
{ … }

int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata, u64 *changed)
{ … }

int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data *sdata,
			      struct cfg80211_csa_settings *csa_settings,
			      u64 *changed)
{ … }

static int mesh_fwd_csa_frame(struct ieee80211_sub_if_data *sdata,
			       struct ieee80211_mgmt *mgmt, size_t len,
			       struct ieee802_11_elems *elems)
{ … }

static void mesh_rx_csa_frame(struct ieee80211_sub_if_data *sdata,
			      struct ieee80211_mgmt *mgmt, size_t len)
{ … }

static void ieee80211_mesh_rx_mgmt_action(struct ieee80211_sub_if_data *sdata,
					  struct ieee80211_mgmt *mgmt,
					  size_t len,
					  struct ieee80211_rx_status *rx_status)
{ … }

void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
				   struct sk_buff *skb)
{ … }

static void mesh_bss_info_changed(struct ieee80211_sub_if_data *sdata)
{ … }

void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata)
{ … }


void ieee80211_mesh_init_sdata(struct ieee80211_sub_if_data *sdata)
{ … }

void ieee80211_mesh_teardown_sdata(struct ieee80211_sub_if_data *sdata)
{ … }
linux/net/mac80211/mesh.c
