mirror of https://gitee.com/openkylin/linux.git
463 lines
15 KiB
C
463 lines
15 KiB
C
/*
|
|
* Wireless configuration interface internals.
|
|
*
|
|
* Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net>
|
|
*/
|
|
#ifndef __NET_WIRELESS_CORE_H
|
|
#define __NET_WIRELESS_CORE_H
|
|
#include <linux/mutex.h>
|
|
#include <linux/list.h>
|
|
#include <linux/netdevice.h>
|
|
#include <linux/kref.h>
|
|
#include <linux/rbtree.h>
|
|
#include <linux/debugfs.h>
|
|
#include <linux/rfkill.h>
|
|
#include <linux/workqueue.h>
|
|
#include <net/genetlink.h>
|
|
#include <net/cfg80211.h>
|
|
#include "reg.h"
|
|
|
|
struct cfg80211_registered_device {
|
|
const struct cfg80211_ops *ops;
|
|
struct list_head list;
|
|
/* we hold this mutex during any call so that
|
|
* we cannot do multiple calls at once, and also
|
|
* to avoid the deregister call to proceed while
|
|
* any call is in progress */
|
|
struct mutex mtx;
|
|
|
|
/* rfkill support */
|
|
struct rfkill_ops rfkill_ops;
|
|
struct rfkill *rfkill;
|
|
struct work_struct rfkill_sync;
|
|
|
|
/* 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];
|
|
|
|
/* 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;
|
|
|
|
/* associate netdev list */
|
|
struct mutex devlist_mtx;
|
|
/* protected by devlist_mtx or RCU */
|
|
struct list_head netdev_list;
|
|
int devlist_generation;
|
|
int opencount; /* also protected by devlist_mtx */
|
|
wait_queue_head_t dev_wait;
|
|
|
|
/* BSSes/scanning */
|
|
spinlock_t bss_lock;
|
|
struct list_head bss_list;
|
|
struct rb_root bss_tree;
|
|
u32 bss_generation;
|
|
struct cfg80211_scan_request *scan_req; /* protected by RTNL */
|
|
struct cfg80211_sched_scan_request *sched_scan_req;
|
|
unsigned long suspend_at;
|
|
struct work_struct scan_done_wk;
|
|
struct work_struct sched_scan_results_wk;
|
|
|
|
#ifdef CONFIG_NL80211_TESTMODE
|
|
struct genl_info *testmode_info;
|
|
#endif
|
|
|
|
struct work_struct conn_work;
|
|
struct work_struct event_work;
|
|
|
|
struct cfg80211_wowlan *wowlan;
|
|
|
|
/* must be last because of the way we do wiphy_priv(),
|
|
* and it should at least be aligned to NETDEV_ALIGN */
|
|
struct wiphy wiphy __attribute__((__aligned__(NETDEV_ALIGN)));
|
|
};
|
|
|
|
static inline
|
|
struct cfg80211_registered_device *wiphy_to_dev(struct wiphy *wiphy)
|
|
{
|
|
BUG_ON(!wiphy);
|
|
return container_of(wiphy, struct cfg80211_registered_device, wiphy);
|
|
}
|
|
|
|
/* Note 0 is valid, hence phy0 */
|
|
static inline
|
|
bool wiphy_idx_valid(int wiphy_idx)
|
|
{
|
|
return wiphy_idx >= 0;
|
|
}
|
|
|
|
static inline void
|
|
cfg80211_rdev_free_wowlan(struct cfg80211_registered_device *rdev)
|
|
{
|
|
int i;
|
|
|
|
if (!rdev->wowlan)
|
|
return;
|
|
for (i = 0; i < rdev->wowlan->n_patterns; i++)
|
|
kfree(rdev->wowlan->patterns[i].mask);
|
|
kfree(rdev->wowlan->patterns);
|
|
kfree(rdev->wowlan);
|
|
}
|
|
|
|
extern struct workqueue_struct *cfg80211_wq;
|
|
extern struct mutex cfg80211_mutex;
|
|
extern struct list_head cfg80211_rdev_list;
|
|
extern int cfg80211_rdev_list_generation;
|
|
|
|
static inline void assert_cfg80211_lock(void)
|
|
{
|
|
lockdep_assert_held(&cfg80211_mutex);
|
|
}
|
|
|
|
/*
|
|
* You can use this to mark a wiphy_idx as not having an associated wiphy.
|
|
* It guarantees cfg80211_rdev_by_wiphy_idx(wiphy_idx) will return NULL
|
|
*/
|
|
#define WIPHY_IDX_STALE -1
|
|
|
|
struct cfg80211_internal_bss {
|
|
struct list_head list;
|
|
struct rb_node rbn;
|
|
unsigned long ts;
|
|
struct kref ref;
|
|
atomic_t hold;
|
|
bool beacon_ies_allocated;
|
|
bool proberesp_ies_allocated;
|
|
|
|
/* 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_ref_bss(struct cfg80211_internal_bss *bss)
|
|
{
|
|
kref_get(&bss->ref);
|
|
}
|
|
|
|
static inline void cfg80211_hold_bss(struct cfg80211_internal_bss *bss)
|
|
{
|
|
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);
|
|
}
|
|
|
|
|
|
struct cfg80211_registered_device *cfg80211_rdev_by_wiphy_idx(int wiphy_idx);
|
|
int get_wiphy_idx(struct wiphy *wiphy);
|
|
|
|
struct cfg80211_registered_device *
|
|
__cfg80211_rdev_from_info(struct genl_info *info);
|
|
|
|
/*
|
|
* This function returns a pointer to the driver
|
|
* that the genl_info item that is passed refers to.
|
|
* If successful, it returns non-NULL and also locks
|
|
* the driver's mutex!
|
|
*
|
|
* This means that you need to call cfg80211_unlock_rdev()
|
|
* before being allowed to acquire &cfg80211_mutex!
|
|
*
|
|
* This is necessary because we need to lock the global
|
|
* mutex to get an item off the list safely, and then
|
|
* we lock the rdev mutex so it doesn't go away under us.
|
|
*
|
|
* We don't want to keep cfg80211_mutex locked
|
|
* for all the time in order to allow requests on
|
|
* other interfaces to go through at the same time.
|
|
*
|
|
* The result of this can be a PTR_ERR and hence must
|
|
* be checked with IS_ERR() for errors.
|
|
*/
|
|
extern struct cfg80211_registered_device *
|
|
cfg80211_get_dev_from_info(struct genl_info *info);
|
|
|
|
/* requires cfg80211_rdev_mutex to be held! */
|
|
struct wiphy *wiphy_idx_to_wiphy(int wiphy_idx);
|
|
|
|
/* identical to cfg80211_get_dev_from_info but only operate on ifindex */
|
|
extern struct cfg80211_registered_device *
|
|
cfg80211_get_dev_from_ifindex(struct net *net, int ifindex);
|
|
|
|
int cfg80211_switch_netns(struct cfg80211_registered_device *rdev,
|
|
struct net *net);
|
|
|
|
static inline void cfg80211_lock_rdev(struct cfg80211_registered_device *rdev)
|
|
{
|
|
mutex_lock(&rdev->mtx);
|
|
}
|
|
|
|
static inline void cfg80211_unlock_rdev(struct cfg80211_registered_device *rdev)
|
|
{
|
|
BUG_ON(IS_ERR(rdev) || !rdev);
|
|
mutex_unlock(&rdev->mtx);
|
|
}
|
|
|
|
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_RDEV_LOCK(rdev) lockdep_assert_held(&(rdev)->mtx)
|
|
#define ASSERT_WDEV_LOCK(wdev) lockdep_assert_held(&(wdev)->mtx)
|
|
|
|
enum cfg80211_event_type {
|
|
EVENT_CONNECT_RESULT,
|
|
EVENT_ROAMED,
|
|
EVENT_DISCONNECTED,
|
|
EVENT_IBSS_JOINED,
|
|
};
|
|
|
|
struct cfg80211_event {
|
|
struct list_head list;
|
|
enum cfg80211_event_type type;
|
|
|
|
union {
|
|
struct {
|
|
u8 bssid[ETH_ALEN];
|
|
const u8 *req_ie;
|
|
const u8 *resp_ie;
|
|
size_t req_ie_len;
|
|
size_t resp_ie_len;
|
|
u16 status;
|
|
} cr;
|
|
struct {
|
|
struct ieee80211_channel *channel;
|
|
u8 bssid[ETH_ALEN];
|
|
const u8 *req_ie;
|
|
const u8 *resp_ie;
|
|
size_t req_ie_len;
|
|
size_t resp_ie_len;
|
|
} rm;
|
|
struct {
|
|
const u8 *ie;
|
|
size_t ie_len;
|
|
u16 reason;
|
|
} dc;
|
|
struct {
|
|
u8 bssid[ETH_ALEN];
|
|
} ij;
|
|
};
|
|
};
|
|
|
|
struct cfg80211_cached_keys {
|
|
struct key_params params[6];
|
|
u8 data[6][WLAN_MAX_KEY_LEN];
|
|
int def, defmgmt;
|
|
};
|
|
|
|
|
|
/* free object */
|
|
extern void cfg80211_dev_free(struct cfg80211_registered_device *rdev);
|
|
|
|
extern int cfg80211_dev_rename(struct cfg80211_registered_device *rdev,
|
|
char *newname);
|
|
|
|
void ieee80211_set_bitrate_flags(struct wiphy *wiphy);
|
|
void wiphy_update_regulatory(struct wiphy *wiphy,
|
|
enum nl80211_reg_initiator setby);
|
|
|
|
void cfg80211_bss_expire(struct cfg80211_registered_device *dev);
|
|
void cfg80211_bss_age(struct cfg80211_registered_device *dev,
|
|
unsigned long age_secs);
|
|
|
|
/* IBSS */
|
|
int __cfg80211_join_ibss(struct cfg80211_registered_device *rdev,
|
|
struct net_device *dev,
|
|
struct cfg80211_ibss_params *params,
|
|
struct cfg80211_cached_keys *connkeys);
|
|
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);
|
|
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,
|
|
const struct mesh_setup *setup,
|
|
const struct mesh_config *conf);
|
|
int cfg80211_join_mesh(struct cfg80211_registered_device *rdev,
|
|
struct net_device *dev,
|
|
const struct mesh_setup *setup,
|
|
const struct mesh_config *conf);
|
|
int cfg80211_leave_mesh(struct cfg80211_registered_device *rdev,
|
|
struct net_device *dev);
|
|
|
|
/* 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,
|
|
bool local_state_change);
|
|
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,
|
|
bool local_state_change);
|
|
int __cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev,
|
|
struct net_device *dev,
|
|
struct ieee80211_channel *chan,
|
|
const u8 *bssid, const u8 *prev_bssid,
|
|
const u8 *ssid, int ssid_len,
|
|
const u8 *ie, int ie_len, bool use_mfp,
|
|
struct cfg80211_crypto_settings *crypt);
|
|
int cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev,
|
|
struct net_device *dev, struct ieee80211_channel *chan,
|
|
const u8 *bssid, const u8 *prev_bssid,
|
|
const u8 *ssid, int ssid_len,
|
|
const u8 *ie, int ie_len, bool use_mfp,
|
|
struct cfg80211_crypto_settings *crypt);
|
|
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_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);
|
|
void __cfg80211_connect_result(struct net_device *dev, const u8 *bssid,
|
|
const u8 *req_ie, size_t req_ie_len,
|
|
const u8 *resp_ie, size_t resp_ie_len,
|
|
u16 status, bool wextev,
|
|
struct cfg80211_bss *bss);
|
|
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_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 net_device *dev,
|
|
struct ieee80211_channel *chan, bool offchan,
|
|
enum nl80211_channel_type channel_type,
|
|
bool channel_type_valid, unsigned int wait,
|
|
const u8 *buf, size_t len, u64 *cookie);
|
|
|
|
/* SME */
|
|
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);
|
|
int cfg80211_connect(struct cfg80211_registered_device *rdev,
|
|
struct net_device *dev,
|
|
struct cfg80211_connect_params *connect,
|
|
struct cfg80211_cached_keys *connkeys);
|
|
int __cfg80211_disconnect(struct cfg80211_registered_device *rdev,
|
|
struct net_device *dev, u16 reason,
|
|
bool wextev);
|
|
int cfg80211_disconnect(struct cfg80211_registered_device *rdev,
|
|
struct net_device *dev, u16 reason,
|
|
bool wextev);
|
|
void __cfg80211_roamed(struct wireless_dev *wdev,
|
|
struct ieee80211_channel *channel,
|
|
const u8 *bssid,
|
|
const u8 *req_ie, size_t req_ie_len,
|
|
const u8 *resp_ie, size_t resp_ie_len);
|
|
int cfg80211_mgd_wext_connect(struct cfg80211_registered_device *rdev,
|
|
struct wireless_dev *wdev);
|
|
|
|
void cfg80211_conn_work(struct work_struct *work);
|
|
void cfg80211_sme_failed_assoc(struct wireless_dev *wdev);
|
|
bool cfg80211_sme_failed_reassoc(struct wireless_dev *wdev);
|
|
|
|
/* internal helpers */
|
|
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_disconnected(struct net_device *dev, const u8 *ie,
|
|
size_t ie_len, u16 reason, bool from_ap);
|
|
void cfg80211_sme_scan_done(struct net_device *dev);
|
|
void cfg80211_sme_rx_auth(struct net_device *dev, const u8 *buf, size_t len);
|
|
void cfg80211_sme_disassoc(struct net_device *dev, int idx);
|
|
void __cfg80211_scan_done(struct work_struct *wk);
|
|
void ___cfg80211_scan_done(struct cfg80211_registered_device *rdev, bool leak);
|
|
void __cfg80211_sched_scan_results(struct work_struct *wk);
|
|
int __cfg80211_stop_sched_scan(struct cfg80211_registered_device *rdev,
|
|
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,
|
|
u32 *flags, struct vif_params *params);
|
|
void cfg80211_process_rdev_events(struct cfg80211_registered_device *rdev);
|
|
|
|
int cfg80211_can_change_interface(struct cfg80211_registered_device *rdev,
|
|
struct wireless_dev *wdev,
|
|
enum nl80211_iftype iftype);
|
|
|
|
static inline int
|
|
cfg80211_can_add_interface(struct cfg80211_registered_device *rdev,
|
|
enum nl80211_iftype iftype)
|
|
{
|
|
return cfg80211_can_change_interface(rdev, NULL, iftype);
|
|
}
|
|
|
|
struct ieee80211_channel *
|
|
rdev_freq_to_chan(struct cfg80211_registered_device *rdev,
|
|
int freq, enum nl80211_channel_type channel_type);
|
|
int cfg80211_set_freq(struct cfg80211_registered_device *rdev,
|
|
struct wireless_dev *wdev, int freq,
|
|
enum nl80211_channel_type channel_type);
|
|
|
|
u16 cfg80211_calculate_bitrate(struct rate_info *rate);
|
|
|
|
int cfg80211_validate_beacon_int(struct cfg80211_registered_device *rdev,
|
|
u32 beacon_int);
|
|
|
|
#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
|
|
|
|
#endif /* __NET_WIRELESS_CORE_H */
|