| /* 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; |
| |
| struct list_head mlme_unreg; |
| spinlock_t mlme_unreg_lock; |
| struct work_struct mlme_unreg_wk; |
| |
| /* 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; |
| |
| /* 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 inline |
| struct cfg80211_registered_device *wiphy_to_rdev(struct wiphy *wiphy) |
| { |
| BUG_ON(!wiphy); |
| return container_of(wiphy, struct cfg80211_registered_device, wiphy); |
| } |
| |
| static inline void |
| cfg80211_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 wireless_dev *wdev); |
| void cfg80211_register_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[0]; |
| }; |
| |
| 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); |
| void cfg80211_mlme_unreg_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); |
| bool cfg80211_valid_key_idx(struct cfg80211_registered_device *rdev, |
| int key_idx, bool pairwise); |
| 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 int |
| cfg80211_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); |
| |
| return jiffies_to_msecs(end + (ULONG_MAX - start) + 1); |
| } |
| |
| void |
| cfg80211_get_chan_state(struct wireless_dev *wdev, |
| struct ieee80211_channel **chan, |
| enum cfg80211_chan_mode *chanmode, |
| u8 *radar_detect); |
| |
| int cfg80211_set_monitor_channel(struct cfg80211_registered_device *rdev, |
| struct cfg80211_chan_def *chandef); |
| |
| int ieee80211_get_ratemask(struct ieee80211_supported_band *sband, |
| const u8 *rates, unsigned int n_rates, |
| u32 *mask); |
| |
| int cfg80211_validate_beacon_int(struct cfg80211_registered_device *rdev, |
| enum nl80211_iftype iftype, u32 beacon_int); |
| |
| void cfg80211_update_iface_num(struct cfg80211_registered_device *rdev, |
| enum nl80211_iftype iftype, int num); |
| |
| void __cfg80211_leave(struct cfg80211_registered_device *rdev, |
| struct wireless_dev *wdev); |
| void cfg80211_leave(struct cfg80211_registered_device *rdev, |
| struct wireless_dev *wdev); |
| |
| void cfg80211_stop_p2p_device(struct cfg80211_registered_device *rdev, |
| struct wireless_dev *wdev); |
| |
| void cfg80211_stop_nan(struct cfg80211_registered_device *rdev, |
| struct wireless_dev *wdev); |
| |
| struct cfg80211_internal_bss * |
| cfg80211_bss_update(struct cfg80211_registered_device *rdev, |
| struct cfg80211_internal_bss *tmp, |
| bool signal_valid, unsigned long ts); |
| #ifdef CONFIG_CFG80211_DEVELOPER_WARNINGS |
| #define CFG80211_DEV_WARN_ON(cond) WARN_ON(cond) |
| #else |
| /* |
| * Trick to enable using it as a condition, |
| * and also not give a warning when it's |
| * not used that way. |
| */ |
| #define CFG80211_DEV_WARN_ON(cond) ({bool __r = (cond); __r; }) |
| #endif |
| |
| void cfg80211_cqm_config_free(struct wireless_dev *wdev); |
| |
| void cfg80211_release_pmsr(struct wireless_dev *wdev, u32 portid); |
| void cfg80211_pmsr_wdev_down(struct wireless_dev *wdev); |
| void cfg80211_pmsr_free_wk(struct work_struct *work); |
| |
| #endif /* __NET_WIRELESS_CORE_H */ |