linux/net/mac80211/tdls.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * mac80211 TDLS handling code
 *
 * Copyright 2006-2010	Johannes Berg <[email protected]>
 * Copyright 2014, Intel Corporation
 * Copyright 2014  Intel Mobile Communications GmbH
 * Copyright 2015 - 2016 Intel Deutschland GmbH
 * Copyright (C) 2019, 2021-2024 Intel Corporation
 */

#include <linux/ieee80211.h>
#include <linux/log2.h>
#include <net/cfg80211.h>
#include <linux/rtnetlink.h>
#include "ieee80211_i.h"
#include "driver-ops.h"
#include "rate.h"
#include "wme.h"

/* give usermode some time for retries in setting up the TDLS session */
#define TDLS_PEER_SETUP_TIMEOUT …

void ieee80211_tdls_peer_del_work(struct wiphy *wiphy, struct wiphy_work *wk)
{ … }

static void ieee80211_tdls_add_ext_capab(struct ieee80211_link_data *link,
					 struct sk_buff *skb)
{ … }

static u8
ieee80211_tdls_add_subband(struct ieee80211_sub_if_data *sdata,
			   struct sk_buff *skb, u16 start, u16 end,
			   u16 spacing)
{ … }

static void
ieee80211_tdls_add_supp_channels(struct ieee80211_sub_if_data *sdata,
				 struct sk_buff *skb)
{ … }

static void ieee80211_tdls_add_oper_classes(struct ieee80211_link_data *link,
					    struct sk_buff *skb)
{ … }

static void ieee80211_tdls_add_bss_coex_ie(struct sk_buff *skb)
{ … }

static u16 ieee80211_get_tdls_sta_capab(struct ieee80211_link_data *link,
					u16 status_code)
{ … }

static void ieee80211_tdls_add_link_ie(struct ieee80211_link_data *link,
				       struct sk_buff *skb, const u8 *peer,
				       bool initiator)
{ … }

static void
ieee80211_tdls_add_aid(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb)
{ … }

/* translate numbering in the WMM parameter IE to the mac80211 notation */
static enum ieee80211_ac_numbers ieee80211_ac_from_wmm(int ac)
{ … }

static u8 ieee80211_wmm_aci_aifsn(int aifsn, bool acm, int aci)
{ … }

static u8 ieee80211_wmm_ecw(u16 cw_min, u16 cw_max)
{ … }

static void ieee80211_tdls_add_wmm_param_ie(struct ieee80211_sub_if_data *sdata,
					    struct sk_buff *skb)
{ … }

static void
ieee80211_tdls_chandef_vht_upgrade(struct ieee80211_sub_if_data *sdata,
				   struct sta_info *sta)
{ … }

static void
ieee80211_tdls_add_setup_start_ies(struct ieee80211_link_data *link,
				   struct sk_buff *skb, const u8 *peer,
				   u8 action_code, bool initiator,
				   const u8 *extra_ies, size_t extra_ies_len)
{ … }

static void
ieee80211_tdls_add_setup_cfm_ies(struct ieee80211_link_data *link,
				 struct sk_buff *skb, const u8 *peer,
				 bool initiator, const u8 *extra_ies,
				 size_t extra_ies_len)
{ … }

static void
ieee80211_tdls_add_chan_switch_req_ies(struct ieee80211_link_data *link,
				       struct sk_buff *skb, const u8 *peer,
				       bool initiator, const u8 *extra_ies,
				       size_t extra_ies_len, u8 oper_class,
				       struct cfg80211_chan_def *chandef)
{ … }

static void
ieee80211_tdls_add_chan_switch_resp_ies(struct ieee80211_link_data *link,
					struct sk_buff *skb, const u8 *peer,
					u16 status_code, bool initiator,
					const u8 *extra_ies,
					size_t extra_ies_len)
{ … }

static void ieee80211_tdls_add_ies(struct ieee80211_link_data *link,
				   struct sk_buff *skb, const u8 *peer,
				   u8 action_code, u16 status_code,
				   bool initiator, const u8 *extra_ies,
				   size_t extra_ies_len, u8 oper_class,
				   struct cfg80211_chan_def *chandef)
{ … }

static int
ieee80211_prep_tdls_encap_data(struct wiphy *wiphy, struct net_device *dev,
			       struct ieee80211_link_data *link,
			       const u8 *peer, u8 action_code, u8 dialog_token,
			       u16 status_code, struct sk_buff *skb)
{ … }

static int
ieee80211_prep_tdls_direct(struct wiphy *wiphy, struct net_device *dev,
			   const u8 *peer, struct ieee80211_link_data *link,
			   u8 action_code, u8 dialog_token,
			   u16 status_code, struct sk_buff *skb)
{ … }

static struct sk_buff *
ieee80211_tdls_build_mgmt_packet_data(struct ieee80211_sub_if_data *sdata,
				      const u8 *peer, int link_id,
				      u8 action_code, u8 dialog_token,
				      u16 status_code, bool initiator,
				      const u8 *extra_ies, size_t extra_ies_len,
				      u8 oper_class,
				      struct cfg80211_chan_def *chandef)
{ … }

static int
ieee80211_tdls_prep_mgmt_packet(struct wiphy *wiphy, struct net_device *dev,
				const u8 *peer, int link_id,
				u8 action_code, u8 dialog_token,
				u16 status_code, u32 peer_capability,
				bool initiator, const u8 *extra_ies,
				size_t extra_ies_len, u8 oper_class,
				struct cfg80211_chan_def *chandef)
{ … }

static int
ieee80211_tdls_mgmt_setup(struct wiphy *wiphy, struct net_device *dev,
			  const u8 *peer, int link_id,
			  u8 action_code, u8 dialog_token,
			  u16 status_code, u32 peer_capability, bool initiator,
			  const u8 *extra_ies, size_t extra_ies_len)
{ … }

static int
ieee80211_tdls_mgmt_teardown(struct wiphy *wiphy, struct net_device *dev,
			     const u8 *peer, int link_id,
			     u8 action_code, u8 dialog_token,
			     u16 status_code, u32 peer_capability,
			     bool initiator, const u8 *extra_ies,
			     size_t extra_ies_len)
{ … }

int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
			const u8 *peer, int link_id,
			u8 action_code, u8 dialog_token, u16 status_code,
			u32 peer_capability, bool initiator,
			const u8 *extra_ies, size_t extra_ies_len)
{ … }

static void iee80211_tdls_recalc_chanctx(struct ieee80211_sub_if_data *sdata,
					 struct sta_info *sta)
{ … }

static int iee80211_tdls_have_ht_peers(struct ieee80211_sub_if_data *sdata)
{ … }

static void
iee80211_tdls_recalc_ht_protection(struct ieee80211_sub_if_data *sdata,
				   struct sta_info *sta)
{ … }

int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
			const u8 *peer, enum nl80211_tdls_operation oper)
{ … }

void ieee80211_tdls_oper_request(struct ieee80211_vif *vif, const u8 *peer,
				 enum nl80211_tdls_operation oper,
				 u16 reason_code, gfp_t gfp)
{ … }
EXPORT_SYMBOL(…);

static void
iee80211_tdls_add_ch_switch_timing(u8 *buf, u16 switch_time, u16 switch_timeout)
{ … }

/* find switch timing IE in SKB ready for Tx */
static const u8 *ieee80211_tdls_find_sw_timing_ie(struct sk_buff *skb)
{ … }

static struct sk_buff *
ieee80211_tdls_ch_sw_tmpl_get(struct sta_info *sta, u8 oper_class,
			      struct cfg80211_chan_def *chandef,
			      u32 *ch_sw_tm_ie_offset)
{ … }

int
ieee80211_tdls_channel_switch(struct wiphy *wiphy, struct net_device *dev,
			      const u8 *addr, u8 oper_class,
			      struct cfg80211_chan_def *chandef)
{ … }

void
ieee80211_tdls_cancel_channel_switch(struct wiphy *wiphy,
				     struct net_device *dev,
				     const u8 *addr)
{ … }

static struct sk_buff *
ieee80211_tdls_ch_sw_resp_tmpl_get(struct sta_info *sta,
				   u32 *ch_sw_tm_ie_offset)
{ … }

static int
ieee80211_process_tdls_channel_switch_resp(struct ieee80211_sub_if_data *sdata,
					   struct sk_buff *skb)
{ … }

static int
ieee80211_process_tdls_channel_switch_req(struct ieee80211_sub_if_data *sdata,
					  struct sk_buff *skb)
{ … }

void
ieee80211_process_tdls_channel_switch(struct ieee80211_sub_if_data *sdata,
				      struct sk_buff *skb)
{ … }

void ieee80211_teardown_tdls_peers(struct ieee80211_link_data *link)
{ … }

void ieee80211_tdls_handle_disconnect(struct ieee80211_sub_if_data *sdata,
				      const u8 *peer, u16 reason)
{ … }