/* SPDX-License-Identifier: GPL-2.0 *//* * Wireless configuration interface internals. * * Copyright 2006-2010	Johannes Berg <johannes@sipsolutions.net> * Copyright (C) 2018-2019 Intel Corporation */#ifndef __NET_WIRELESS_CORE_H#define __NET_WIRELESS_CORE_H#include <linux/list.h>#include <linux/netdevice.h>#include <linux/rbtree.h>#include <linux/debugfs.h>#include <linux/rfkill.h>#include <linux/workqueue.h>#include <linux/rtnetlink.h>#include <net/genetlink.h>#include <net/cfg80211.h>#include "reg.h"  #define WIPHY_IDX_INVALID	-1 struct cfg80211_registered_device {	const struct cfg80211_ops *ops;	struct list_head list; 	/* rfkill support */	struct rfkill_ops rfkill_ops;	struct rfkill *rfkill;	struct work_struct rfkill_block; 	/* ISO / IEC 3166 alpha2 for which this device is receiving	 * country IEs on, this can help disregard country IEs from APs	 * on the same alpha2 quickly. The alpha2 may differ from	 * cfg80211_regdomain's alpha2 when an intersection has occurred.	 * If the AP is reconfigured this can also be used to tell us if	 * the country on the country IE changed. */	char country_ie_alpha2[2]; 	/*	 * the driver requests the regulatory core to set this regulatory	 * domain as the wiphy's. Only used for %REGULATORY_WIPHY_SELF_MANAGED	 * devices using the regulatory_set_wiphy_regd() API	 */	const struct ieee80211_regdomain *requested_regd; 	/* If a Country IE has been received this tells us the environment	 * which its telling us its in. This defaults to ENVIRON_ANY */	enum environment_cap env; 	/* wiphy index, internal only */	int wiphy_idx; 	/* protected by RTNL */	int devlist_generation, wdev_id;	int opencount;	wait_queue_head_t dev_wait; 	struct list_head beacon_registrations;	spinlock_t beacon_registrations_lock; 	/* protected by RTNL only */	int num_running_ifaces;	int num_running_monitor_ifaces;	u64 cookie_counter; 	/* BSSes/scanning */	spinlock_t bss_lock;	struct list_head bss_list;	struct rb_root bss_tree;	u32 bss_generation;	u32 bss_entries;	struct cfg80211_scan_request *scan_req; /* protected by RTNL */	struct sk_buff *scan_msg;	struct list_head sched_scan_req_list;	time64_t suspend_at;	struct work_struct scan_done_wk; 	struct genl_info *cur_cmd_info; 	struct work_struct conn_work;	struct work_struct event_work; 	struct delayed_work dfs_update_channels_wk; 	/* netlink port which started critical protocol (0 means not started) */	u32 crit_proto_nlportid; 	struct cfg80211_coalesce *coalesce; 	struct work_struct destroy_work;	struct work_struct sched_scan_stop_wk;	struct work_struct sched_scan_res_wk; 	struct cfg80211_chan_def radar_chandef;	struct work_struct propagate_radar_detect_wk; 	struct cfg80211_chan_def cac_done_chandef;	struct work_struct propagate_cac_done_wk; 	struct work_struct mgmt_registrations_update_wk; 	/* must be last because of the way we do wiphy_priv(),	 * and it should at least be aligned to NETDEV_ALIGN */	struct wiphy wiphy __aligned(NETDEV_ALIGN);}; static inlinestruct cfg80211_registered_device *wiphy_to_rdev(struct wiphy *wiphy){	BUG_ON(!wiphy);	return container_of(wiphy, struct cfg80211_registered_device, wiphy);} static inline voidcfg80211_rdev_free_wowlan(struct cfg80211_registered_device *rdev){#ifdef CONFIG_PM	int i; 	if (!rdev->wiphy.wowlan_config)		return;	for (i = 0; i < rdev->wiphy.wowlan_config->n_patterns; i++)		kfree(rdev->wiphy.wowlan_config->patterns[i].mask);	kfree(rdev->wiphy.wowlan_config->patterns);	if (rdev->wiphy.wowlan_config->tcp &&	    rdev->wiphy.wowlan_config->tcp->sock)		sock_release(rdev->wiphy.wowlan_config->tcp->sock);	kfree(rdev->wiphy.wowlan_config->tcp);	kfree(rdev->wiphy.wowlan_config->nd_config);	kfree(rdev->wiphy.wowlan_config);#endif} static inline u64 cfg80211_assign_cookie(struct cfg80211_registered_device *rdev){	u64 r = ++rdev->cookie_counter; 	if (WARN_ON(r == 0))		r = ++rdev->cookie_counter; 	return r;} extern struct workqueue_struct *cfg80211_wq;extern struct list_head cfg80211_rdev_list;extern int cfg80211_rdev_list_generation; struct cfg80211_internal_bss {	struct list_head list;	struct list_head hidden_list;	struct rb_node rbn;	u64 ts_boottime;	unsigned long ts;	unsigned long refcount;	atomic_t hold; 	/* time at the start of the reception of the first octet of the	 * timestamp field of the last beacon/probe received for this BSS.	 * The time is the TSF of the BSS specified by %parent_bssid.	 */	u64 parent_tsf; 	/* the BSS according to which %parent_tsf is set. This is set to	 * the BSS that the interface that requested the scan was connected to	 * when the beacon/probe was received.	 */	u8 parent_bssid[ETH_ALEN] __aligned(2); 	/* must be last because of priv member */	struct cfg80211_bss pub;}; static inline struct cfg80211_internal_bss *bss_from_pub(struct cfg80211_bss *pub){	return container_of(pub, struct cfg80211_internal_bss, pub);} static inline void cfg80211_hold_bss(struct cfg80211_internal_bss *bss){	atomic_inc(&bss->hold);	if (bss->pub.transmitted_bss) {		bss = container_of(bss->pub.transmitted_bss,				   struct cfg80211_internal_bss, pub);		atomic_inc(&bss->hold);	}} static inline void cfg80211_unhold_bss(struct cfg80211_internal_bss *bss){	int r = atomic_dec_return(&bss->hold);	WARN_ON(r < 0);	if (bss->pub.transmitted_bss) {		bss = container_of(bss->pub.transmitted_bss,				   struct cfg80211_internal_bss, pub);		r = atomic_dec_return(&bss->hold);		WARN_ON(r < 0);	}}  struct cfg80211_registered_device *cfg80211_rdev_by_wiphy_idx(int wiphy_idx);int get_wiphy_idx(struct wiphy *wiphy); struct wiphy *wiphy_idx_to_wiphy(int wiphy_idx); int cfg80211_switch_netns(struct cfg80211_registered_device *rdev,			  struct net *net); void cfg80211_init_wdev(struct cfg80211_registered_device *rdev,			struct wireless_dev *wdev); static inline void wdev_lock(struct wireless_dev *wdev)	__acquires(wdev){	mutex_lock(&wdev->mtx);	__acquire(wdev->mtx);} static inline void wdev_unlock(struct wireless_dev *wdev)	__releases(wdev){	__release(wdev->mtx);	mutex_unlock(&wdev->mtx);} #define ASSERT_WDEV_LOCK(wdev) lockdep_assert_held(&(wdev)->mtx) static inline bool cfg80211_has_monitors_only(struct cfg80211_registered_device *rdev){	ASSERT_RTNL(); 	return rdev->num_running_ifaces == rdev->num_running_monitor_ifaces &&	       rdev->num_running_ifaces > 0;} enum cfg80211_event_type {	EVENT_CONNECT_RESULT,	EVENT_ROAMED,	EVENT_DISCONNECTED,	EVENT_IBSS_JOINED,	EVENT_STOPPED,	EVENT_PORT_AUTHORIZED,}; struct cfg80211_event {	struct list_head list;	enum cfg80211_event_type type; 	union {		struct cfg80211_connect_resp_params cr;		struct cfg80211_roam_info rm;		struct {			const u8 *ie;			size_t ie_len;			u16 reason;			bool locally_generated;		} dc;		struct {			u8 bssid[ETH_ALEN];			struct ieee80211_channel *channel;		} ij;		struct {			u8 bssid[ETH_ALEN];		} pa;	};}; struct cfg80211_cached_keys {	struct key_params params[CFG80211_MAX_WEP_KEYS];	u8 data[CFG80211_MAX_WEP_KEYS][WLAN_KEY_LEN_WEP104];	int def;}; enum cfg80211_chan_mode {	CHAN_MODE_UNDEFINED,	CHAN_MODE_SHARED,	CHAN_MODE_EXCLUSIVE,}; struct cfg80211_beacon_registration {	struct list_head list;	u32 nlportid;}; struct cfg80211_cqm_config {	u32 rssi_hyst;	s32 last_rssi_event_value;	int n_rssi_thresholds;	s32 rssi_thresholds[];}; void cfg80211_destroy_ifaces(struct cfg80211_registered_device *rdev); /* free object */void cfg80211_dev_free(struct cfg80211_registered_device *rdev); int cfg80211_dev_rename(struct cfg80211_registered_device *rdev,			char *newname); void ieee80211_set_bitrate_flags(struct wiphy *wiphy); void cfg80211_bss_expire(struct cfg80211_registered_device *rdev);void cfg80211_bss_age(struct cfg80211_registered_device *rdev,                      unsigned long age_secs);void cfg80211_update_assoc_bss_entry(struct wireless_dev *wdev,				     struct ieee80211_channel *channel); /* IBSS */int __cfg80211_join_ibss(struct cfg80211_registered_device *rdev,			 struct net_device *dev,			 struct cfg80211_ibss_params *params,			 struct cfg80211_cached_keys *connkeys);void cfg80211_clear_ibss(struct net_device *dev, bool nowext);int __cfg80211_leave_ibss(struct cfg80211_registered_device *rdev,			  struct net_device *dev, bool nowext);int cfg80211_leave_ibss(struct cfg80211_registered_device *rdev,			struct net_device *dev, bool nowext);void __cfg80211_ibss_joined(struct net_device *dev, const u8 *bssid,			    struct ieee80211_channel *channel);int cfg80211_ibss_wext_join(struct cfg80211_registered_device *rdev,			    struct wireless_dev *wdev); /* mesh */extern const struct mesh_config default_mesh_config;extern const struct mesh_setup default_mesh_setup;int __cfg80211_join_mesh(struct cfg80211_registered_device *rdev,			 struct net_device *dev,			 struct mesh_setup *setup,			 const struct mesh_config *conf);int __cfg80211_leave_mesh(struct cfg80211_registered_device *rdev,			  struct net_device *dev);int cfg80211_leave_mesh(struct cfg80211_registered_device *rdev,			struct net_device *dev);int cfg80211_set_mesh_channel(struct cfg80211_registered_device *rdev,			      struct wireless_dev *wdev,			      struct cfg80211_chan_def *chandef); /* OCB */int __cfg80211_join_ocb(struct cfg80211_registered_device *rdev,			struct net_device *dev,			struct ocb_setup *setup);int cfg80211_join_ocb(struct cfg80211_registered_device *rdev,		      struct net_device *dev,		      struct ocb_setup *setup);int __cfg80211_leave_ocb(struct cfg80211_registered_device *rdev,			 struct net_device *dev);int cfg80211_leave_ocb(struct cfg80211_registered_device *rdev,		       struct net_device *dev); /* AP */int __cfg80211_stop_ap(struct cfg80211_registered_device *rdev,		       struct net_device *dev, bool notify);int cfg80211_stop_ap(struct cfg80211_registered_device *rdev,		     struct net_device *dev, bool notify); /* MLME */int cfg80211_mlme_auth(struct cfg80211_registered_device *rdev,		       struct net_device *dev,		       struct ieee80211_channel *chan,		       enum nl80211_auth_type auth_type,		       const u8 *bssid,		       const u8 *ssid, int ssid_len,		       const u8 *ie, int ie_len,		       const u8 *key, int key_len, int key_idx,		       const u8 *auth_data, int auth_data_len);int cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev,			struct net_device *dev,			struct ieee80211_channel *chan,			const u8 *bssid,			const u8 *ssid, int ssid_len,			struct cfg80211_assoc_request *req);int cfg80211_mlme_deauth(struct cfg80211_registered_device *rdev,			 struct net_device *dev, const u8 *bssid,			 const u8 *ie, int ie_len, u16 reason,			 bool local_state_change);int cfg80211_mlme_disassoc(struct cfg80211_registered_device *rdev,			   struct net_device *dev, const u8 *bssid,			   const u8 *ie, int ie_len, u16 reason,			   bool local_state_change);void cfg80211_mlme_down(struct cfg80211_registered_device *rdev,			struct net_device *dev);int cfg80211_mlme_register_mgmt(struct wireless_dev *wdev, u32 snd_pid,				u16 frame_type, const u8 *match_data,				int match_len, bool multicast_rx,				struct netlink_ext_ack *extack);void cfg80211_mgmt_registrations_update_wk(struct work_struct *wk);void cfg80211_mlme_unregister_socket(struct wireless_dev *wdev, u32 nlpid);void cfg80211_mlme_purge_registrations(struct wireless_dev *wdev);int cfg80211_mlme_mgmt_tx(struct cfg80211_registered_device *rdev,			  struct wireless_dev *wdev,			  struct cfg80211_mgmt_tx_params *params,			  u64 *cookie);void cfg80211_oper_and_ht_capa(struct ieee80211_ht_cap *ht_capa,			       const struct ieee80211_ht_cap *ht_capa_mask);void cfg80211_oper_and_vht_capa(struct ieee80211_vht_cap *vht_capa,				const struct ieee80211_vht_cap *vht_capa_mask); /* SME events */int cfg80211_connect(struct cfg80211_registered_device *rdev,		     struct net_device *dev,		     struct cfg80211_connect_params *connect,		     struct cfg80211_cached_keys *connkeys,		     const u8 *prev_bssid);void __cfg80211_connect_result(struct net_device *dev,			       struct cfg80211_connect_resp_params *params,			       bool wextev);void __cfg80211_disconnected(struct net_device *dev, const u8 *ie,			     size_t ie_len, u16 reason, bool from_ap);int cfg80211_disconnect(struct cfg80211_registered_device *rdev,			struct net_device *dev, u16 reason,			bool wextev);void __cfg80211_roamed(struct wireless_dev *wdev,		       struct cfg80211_roam_info *info);void __cfg80211_port_authorized(struct wireless_dev *wdev, const u8 *bssid);int cfg80211_mgd_wext_connect(struct cfg80211_registered_device *rdev,			      struct wireless_dev *wdev);void cfg80211_autodisconnect_wk(struct work_struct *work); /* SME implementation */void cfg80211_conn_work(struct work_struct *work);void cfg80211_sme_scan_done(struct net_device *dev);bool cfg80211_sme_rx_assoc_resp(struct wireless_dev *wdev, u16 status);void cfg80211_sme_rx_auth(struct wireless_dev *wdev, const u8 *buf, size_t len);void cfg80211_sme_disassoc(struct wireless_dev *wdev);void cfg80211_sme_deauth(struct wireless_dev *wdev);void cfg80211_sme_auth_timeout(struct wireless_dev *wdev);void cfg80211_sme_assoc_timeout(struct wireless_dev *wdev);void cfg80211_sme_abandon_assoc(struct wireless_dev *wdev); /* internal helpers */bool cfg80211_supported_cipher_suite(struct wiphy *wiphy, u32 cipher);int cfg80211_validate_key_settings(struct cfg80211_registered_device *rdev,				   struct key_params *params, int key_idx,				   bool pairwise, const u8 *mac_addr);void __cfg80211_scan_done(struct work_struct *wk);void ___cfg80211_scan_done(struct cfg80211_registered_device *rdev,			   bool send_message);void cfg80211_add_sched_scan_req(struct cfg80211_registered_device *rdev,				 struct cfg80211_sched_scan_request *req);int cfg80211_sched_scan_req_possible(struct cfg80211_registered_device *rdev,				     bool want_multi);void cfg80211_sched_scan_results_wk(struct work_struct *work);int cfg80211_stop_sched_scan_req(struct cfg80211_registered_device *rdev,				 struct cfg80211_sched_scan_request *req,				 bool driver_initiated);int __cfg80211_stop_sched_scan(struct cfg80211_registered_device *rdev,			       u64 reqid, bool driver_initiated);void cfg80211_upload_connect_keys(struct wireless_dev *wdev);int cfg80211_change_iface(struct cfg80211_registered_device *rdev,			  struct net_device *dev, enum nl80211_iftype ntype,			  struct vif_params *params);void cfg80211_process_rdev_events(struct cfg80211_registered_device *rdev);void cfg80211_process_wdev_events(struct wireless_dev *wdev); bool cfg80211_does_bw_fit_range(const struct ieee80211_freq_range *freq_range,				u32 center_freq_khz, u32 bw_khz); extern struct work_struct cfg80211_disconnect_work; /** * cfg80211_chandef_dfs_usable - checks if chandef is DFS usable * @wiphy: the wiphy to validate against * @chandef: the channel definition to check * * Checks if chandef is usable and we can/need start CAC on such channel. * * Return: Return true if all channels available and at least *	   one channel require CAC (NL80211_DFS_USABLE) */bool cfg80211_chandef_dfs_usable(struct wiphy *wiphy,				 const struct cfg80211_chan_def *chandef); void cfg80211_set_dfs_state(struct wiphy *wiphy,			    const struct cfg80211_chan_def *chandef,			    enum nl80211_dfs_state dfs_state); void cfg80211_dfs_channels_update_work(struct work_struct *work); unsigned intcfg80211_chandef_dfs_cac_time(struct wiphy *wiphy,			      const struct cfg80211_chan_def *chandef); void cfg80211_sched_dfs_chan_update(struct cfg80211_registered_device *rdev); bool cfg80211_any_wiphy_oper_chan(struct wiphy *wiphy,				  struct ieee80211_channel *chan); bool cfg80211_beaconing_iface_active(struct wireless_dev *wdev); bool cfg80211_is_sub_chan(struct cfg80211_chan_def *chandef,			  struct ieee80211_channel *chan); static inline unsigned int elapsed_jiffies_msecs(unsigned long start){	unsigned long end = jiffies; 	if (end >= start)		return jiffies_to_msecs(end - start);

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