/*
* Copyright 2002-2005, Instant802 Networks, Inc.
* Copyright 2005, Devicescape Software, Inc.
* Copyright 2006-2007 Jiri Benc <jbenc@suse.cz>
* Copyright 2007-2008 Johannes Berg <johannes@sipsolutions.net>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef IEEE80211_I_H
#define IEEE80211_I_H
#include <linux/kernel.h>
#include <linux/device.h>
#include <linux/if_ether.h>
#include <linux/interrupt.h>
#include <linux/list.h>
#include <linux/netdevice.h>
#include <linux/skbuff.h>
#include <linux/workqueue.h>
#include <linux/types.h>
#include <linux/spinlock.h>
#include <linux/etherdevice.h>
#include <net/ieee80211_radiotap.h>
#include <net/cfg80211.h>
#include <net/mac80211.h>
#include "key.h"
#include "sta_info.h"
struct ieee80211_local;
/* Maximum number of broadcast/multicast frames to buffer when some of the
* associated stations are using power saving. */
#define AP_MAX_BC_BUFFER 128
/* Maximum number of frames buffered to all STAs, including multicast frames.
* Note: increasing this limit increases the potential memory requirement. Each
* frame can be up to about 2 kB long. */
#define TOTAL_MAX_TX_BUFFER 512
/* Required encryption head and tailroom */
#define IEEE80211_ENCRYPT_HEADROOM 8
#define IEEE80211_ENCRYPT_TAILROOM 18
/* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent
* reception of at least three fragmented frames. This limit can be increased
* by changing this define, at the cost of slower frame reassembly and
* increased memory use (about 2 kB of RAM per entry). */
#define IEEE80211_FRAGMENT_MAX 4
/*
* Time after which we ignore scan results and no longer report/use
* them in any way.
*/
#define IEEE80211_SCAN_RESULT_EXPIRE (10 * HZ)
#define TU_TO_EXP_TIME(x) (jiffies + usecs_to_jiffies((x) * 1024))
struct ieee80211_fragment_entry {
unsigned long first_frag_time;
unsigned int seq;
unsigned int rx_queue;
unsigned int last_frag;
unsigned int extra_len;
struct sk_buff_head skb_list;
int ccmp; /* Whether fragments were encrypted with CCMP */
u8 last_pn[6]; /* PN of the last fragment if CCMP was used */
};
struct ieee80211_bss {
/* don't want to look up all the time */
size_t ssid_len;
u8 ssid[IEEE80211_MAX_SSID_LEN];
u8 dtim_period;
bool wmm_used;
unsigned long last_probe_resp;
#ifdef CONFIG_MAC80211_MESH
u8 *mesh_id;
size_t mesh_id_len;
u8 *mesh_cfg;
#endif
#define IEEE80211_MAX_SUPP_RATES 32
u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
size_t supp_rates_len;
/*
* During assocation, we save an ERP value from a probe response so
* that we can feed ERP info to the driver when handling the
* association completes. these fields probably won't be up-to-date
* otherwise, you probably don't want to use them.
*/
bool has_erp_value;
u8 erp_value;
};
static inline u8 *bss_mesh_cfg(struct ieee80211_bss *bss)
{
#ifdef CONFIG_MAC80211_MESH
return bss->mesh_cfg;
#endif
return NULL;
}
static inline u8 *bss_mesh_id(struct ieee80211_bss *bss)
{
#ifdef CONFIG_MAC80211_MESH
return bss->mesh_id;
#endif
return NULL;
}
static inline u8 bss_mesh_id_len(struct ieee80211_bss *bss)
{
#ifdef CONFIG_MAC80211_MESH
return bss->mesh_id_len;
#endif
return 0;
}
typedef unsigned __bitwise__ ieee80211_tx_result;
#define TX_CONTINUE ((__force ieee80211_tx_result) 0u)
#define TX_DROP ((__force ieee80211_tx_result) 1u)
#define TX_QUEUED ((__force ieee80211_tx_result) 2u)
#define IEEE80211_TX_FRAGMENTED BIT(0)
#define IEEE80211_TX_UNICAST BIT(1)
#define IEEE80211_TX_PS_BUFFERED BIT(2)
struct ieee80211_tx_data {
struct sk_buff *skb;
struct ieee80211_local *local;
struct ieee80211_sub_if_data *sdata;
struct sta_info *sta;
struct ieee80211_key *key;
struct ieee80211_channel *channel;
u16 ethertype;
unsigned int flags;
};
typedef unsigned __bitwise__ ieee80211_rx_result;
#define RX_CONTINUE ((__force ieee80211_rx_result) 0u)
#define RX_DROP_UNUSABLE ((__force ieee80211_rx_result) 1u)
#define RX_DROP_MONITOR ((__force ieee80211_rx_result) 2u)
#define RX_QUEUED ((__force ieee80211_rx_result) 3u)
#define IEEE80211_RX_IN_SCAN BIT(0)
/* frame is destined to interface currently processed (incl. multicast frames) */
#define IEEE80211_RX_RA_MATCH BIT(1)
#define IEEE80211_RX_AMSDU BIT(2)
#define IEEE80211_RX_FRAGMENTED BIT(3)
/* only add flags here that do not change with subframes of an aMPDU */
struct ieee80211_rx_data {
struct sk_buff *skb;
struct ieee80211_local *local;
struct ieee80211_sub_if_data *sdata;
struct sta_info *sta;
struct ieee80211_key *key;
unsigned int flags;
int queue;
u32 tkip_iv32;
u16 tkip_iv16;
};
struct beacon_data {
u8 *head, *tail;
int head_len, tail_len;
int dtim_period;
};
struct ieee80211_if_ap {
struct beacon_data *beacon;
struct list_head vlans;
/* yes, this looks ugly, but guarantees that we can later use
* bitmap_empty :)
* NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */
u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)];
struct sk_buff_head ps_bc_buf;
atomic_t num_sta_ps; /* number of stations in PS mode */
int dtim_count;
};
struct ieee80211_if_wds {
struct sta_info *sta;
u8 remote_addr[ETH_ALEN];
};
struct ieee80211_if_vlan {
struct list_head list;
/* used for all tx if the VLAN is configured to 4-addr mode */
struct sta_info *sta;
};
struct mesh_stats {
__u32 fwded_mcast; /* Mesh forwarded multicast frames */
__u32 fwded_unicast; /* Mesh forwarded unicast frames */
__u32 fwded_frames; /* Mesh total forwarded frames */
__u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/
__u32 dropped_frames_no_route; /* Not transmitted, no route found */
atomic_t estab_plinks;
};
#define PREQ_Q_F_START 0x1
#define PREQ_Q_F_REFRESH 0x2
struct mesh_preq_queue {
struct list_head list;
u8 dst[ETH_ALEN];
u8 flags;
};
enum ieee80211_work_type {
IEEE80211_WORK_ABORT,
IEEE80211_WORK_DIRECT_PROBE,
IEEE80211_WORK_AUTH,
IEEE80211_WORK_ASSOC,
IEEE80211_WORK_REMAIN_ON_CHANNEL,
};
/**
* enum work_done_result - indicates what to do after work was done
*
* @WORK_DONE_DESTROY: This work item is no longer needed, destroy.
* @WORK_DONE_REQUEUE: This work item was reset to be reused, and
* should be requeued.
*/
enum work_done_result {
WORK_DONE_DESTROY,
WORK_DONE_REQUEUE,
};
struct ieee80211_work {
struct list_head list;
struct rcu_head rcu_head;
struct ieee80211_sub_if_data *sdata;
enum work_done_result (*done)(struct ieee80211_work *wk,
struct sk_buff *skb);
struct ieee80211_channel *chan;
enum nl80211_channel_type chan_type;
unsigned long timeout;
enum ieee80211_work_type type;
u8 filter_ta[ETH_ALEN];
bool started;
union {
struct {
int tries;
u16 algorithm, transaction;
u8 ssid[IEEE80211_MAX_SSID_LEN];
u8 ssid_len;
u8 key[WLAN_KEY_LEN_WEP104];
u8 key_len, key_idx;
bool privacy;
} probe_auth;
struct {
struct cfg80211_bss *bss;
const u8 *supp_rates;
const u8 *ht_information_ie;
enum ieee80211_smps_mode smps;
int tries;
u16 capability;
u8 prev_bssid[ETH_ALEN];
u8 ssid[IEEE80211_MAX_SSID_LEN];
u8 ssid_len;
u8 supp_rates_len;
bool wmm_used, use_11n;
} assoc;
struct {
u32 duration;
bool started;
} remain;
};
int ie_len;
/* must be last */
u8 ie[0];
};
/* flags used in struct ieee80211_if_managed.flags */
enum ieee80211_sta_flags {
IEEE80211_STA_BEACON_POLL = BIT(0),
IEEE80211_STA_CONNECTION_POLL = BIT(1),
IEEE80211_STA_CONTROL_PORT = BIT(2),
IEEE80211_STA_DISABLE_11N = BIT(4),
IEEE80211_STA_CSA_RECEIVED = BIT(5),
IEEE80211_STA_MFP_ENABLED = BIT(6),
};
struct ieee80211_if_managed {
struct timer_list timer;
struct timer_list conn_mon_timer;
struct timer_list bcn_mon_timer;
struct timer_list chswitch_timer;
struct work_struct work;
struct work_struct monitor_work;
struct work_struct chswitch_work;
struct work_struct beacon_loss_work;
unsigned long probe_timeout;
int probe_send_count;
struct mutex mtx;
struct cfg80211_bss *associated;
u8 bssid[ETH_ALEN];
u16 aid;
struct sk_buff_head skb_queue;
unsigned long timers_running; /* used for quiesce/restart */
bool powersave; /* powersave requested for this iface */
enum ieee80211_smps_mode req_smps, /* requested smps mode */
ap_smps; /* smps mode AP thinks we're in */
unsigned int flags;
u32 beacon_crc;
enum {
IEEE80211_MFP_DISABLED,
IEEE80211_MFP_OPTIONAL,
IEEE80211_MFP_REQUIRED
} mfp; /* management frame protection */
int wmm_last_param_set;
u8 use_4addr;
};
enum ieee80211_ibss_request {
IEEE80211_IBSS_REQ_RUN = 0,
};
struct ieee80211_if_ibss {
struct timer_list timer;
struct work_struct work;
struct sk_buff_head skb_queue;
unsigned long request;
unsigned long last_scan_completed;
bool timer_running;
bool fixed_bssid;
bool fixed_channel;
bool privacy;
u8 bssid[ETH_ALEN];
u8 ssid[IEEE80211_MAX_SSID_LEN];
u8 ssid_len, ie_len;
u8 *ie;
struct ieee80211_channel *channel;
unsigned long ibss_join_req;
/* probe response/beacon for IBSS */
struct sk_buff *presp, *skb;
enum {
IEEE80211_IBSS_MLME_SEARCH,
IEEE80211_IBSS_MLME_JOINED,
} state;
};
struct ieee80211_if_mesh {
struct work_struct work;
struct timer_list housekeeping_timer;
struct timer_list mesh_path_timer;
struct timer_list mesh_path_root_timer;
struct sk_buff_head skb_queue;
unsigned long timers_running;
unsigned long wrkq_flags;
u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
size_t mesh_id_len;
/* Active Path Selection Protocol Identifier */
u8 mesh_pp_id;
/* Active Path Selection Metric Identifier */
u8 mesh_pm_id;
/* Congestion Control Mode Identifier */
u8 mesh_cc_id;
/* Synchronization Protocol Identifier */
u8 mesh_sp_id;
/* Authentication Protocol Identifier */
u8 mesh_auth_id;
/* Local mesh Sequence Number */
u32 sn;
/* Last used PREQ ID */
u32 preq_id;
atomic_t mpaths;
/* Timestamp of last SN update */
unsigned long last_sn_update;
/* Timestamp of last SN sent */
unsigned long last_preq;
struct mesh_rmc *rmc;
spinlock_t mesh_preq_queue_lock;
struct mesh_preq_queue preq_queue;
int preq_queue_len;
struct mesh_stats mshstats;
struct mesh_config mshcfg;
u32 mesh_seqnum;
bool accepting_plinks;
};
#ifdef CONFIG_MAC80211_MESH
#define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
do { (msh)->mshstats.name++; } while (0)
#else
#define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
do { } while (0)
#endif
/**
* enum ieee80211_sub_if_data_flags - virtual interface flags
*
* @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
* @IEEE80211_SDATA_PROMISC: interface is promisc
* @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode
* @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
* associated stations and deliver multicast frames both
* back to wireless media and to the local net stack.
*/
enum ieee80211_sub_if_data_flags {
IEEE80211_SDATA_ALLMULTI = BIT(0),
IEEE80211_SDATA_PROMISC = BIT(1),
IEEE80211_SDATA_OPERATING_GMODE = BIT(2),
IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3),
};
struct ieee80211_sub_if_data {
struct list_head list;
struct wireless_dev wdev;
/* keys */
struct list_head key_list;
struct net_device *dev;
struct ieee80211_local *local;
unsigned int flags;
int drop_unencrypted;
char name[IFNAMSIZ];
/*
* keep track of whether the HT opmode (stored in
* vif.bss_info.ht_operation_mode) is valid.
*/
bool ht_opmode_valid;
/* Fragment table for host-based reassembly */
struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX];
unsigned int fragment_next;
#define NUM_DEFAULT_KEYS 4
#define NUM_DEFAULT_MGMT_KEYS 2
struct ieee80211_key *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS];
struct ieee80211_key *default_key;
struct ieee80211_key *default_mgmt_key;
u16 sequence_number;
/*
* AP this belongs to: self in AP mode and
* corresponding AP in VLAN mode, NULL for
* all others (might be needed later in IBSS)
*/
struct ieee80211_if_ap *bss;
int force_unicast_rateidx; /* forced TX rateidx for unicast frames */
int max_ratectrl_rateidx; /* max TX rateidx for rate control */
union {
struct ieee80211_if_ap ap;
struct ieee80211_if_wds wds;
struct ieee80211_if_vlan vlan;
struct ieee80211_if_managed mgd;
struct ieee80211_if_ibss ibss;
#ifdef CONFIG_MAC80211_MESH
struct ieee80211_if_mesh mesh;
#endif
u32 mntr_flags;
} u;
#ifdef CONFIG_MAC80211_DEBUGFS
struct {
struct dentry *dir;
struct dentry *default_key;
struct dentry *default_mgmt_key;
} debugfs;
#endif
/* must be last, dynamically sized area in this! */
struct ieee80211_vif vif;
};
static inline
struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
{
return container_of(p, struct ieee80211_sub_if_data, vif);
}
static inline void
ieee80211_sdata_set_mesh_id(struct ieee80211_sub_if_data *sdata,
u8 mesh_id_len, u8 *mesh_id)
{
#ifdef CONFIG_MAC80211_MESH
struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
ifmsh->mesh_id_len = mesh_id_len;
memcpy(ifmsh->mesh_id, mesh_id, mesh_id_len);
#else
WARN_ON(1);
#endif
}
enum {
IEEE80211_RX_MSG = 1,
IEEE80211_TX_STATUS_MSG = 2,
IEEE80211_DELBA_MSG = 3,
IEEE80211_ADDBA_MSG = 4,
};
enum queue_stop_reason {
IEEE80211_QUEUE_STOP_REASON_DRIVER,
IEEE80211_QUEUE_STOP_REASON_PS,
IEEE80211_QUEUE_STOP_REASON_CSA,
IEEE80211_QUEUE_STOP_REASON_AGGREGATION,
IEEE80211_QUEUE_STOP_REASON_SUSPEND,
IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
};
/**
* mac80211 scan flags - currently active scan mode
*
* @SCAN_SW_SCANNING: We're currently in the process of scanning but may as
* well be on the operating channel
* @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to
* determine if we are on the operating channel or not
* @SCAN_OFF_CHANNEL: We're off our operating channel for scanning,
* gets only set in conjunction with SCAN_SW_SCANNING
*/
enum {
SCAN_SW_SCANNING,
SCAN_HW_SCANNING,
SCAN_OFF_CHANNEL,
};
/**
* enum mac80211_scan_state - scan state machine states
*
* @SCAN_DECISION: Main entry point to the scan state machine, this state
* determines if we should keep on scanning or switch back to the
* operating channel
* @SCAN_SET_CHANNEL: Set the next channel to be scanned
* @SCAN_SEND_PROBE: Send probe requests and wait for probe responses
* @SCAN_LEAVE_OPER_CHANNEL: Leave the operating channel, notify the AP
* about us leaving the channel and stop all associated STA interfaces
* @SCAN_ENTER_OPER_CHANNEL: Enter the operating channel again, notify the
* AP about us being back and restart all associated STA interfaces
*/
enum mac80211_scan_state {
SCAN_DECISION,
SCAN_SET_CHANNEL,
SCAN_SEND_PROBE,
SCAN_LEAVE_OPER_CHANNEL,
SCAN_ENTER_OPER_CHANNEL,
};
struct ieee80211_local {
/* embed the driver visible part.
* don't cast (use the static inlines below), but we keep
* it first anyway so they become a no-op */
struct ieee80211_hw hw;
const struct ieee80211_ops *ops;
/*
* work stuff, potentially off-channel (in the future)
*/
struct mutex work_mtx;
struct list_head work_list;
struct timer_list work_timer;
struct work_struct work_work;
struct sk_buff_head work_skb_queue;
/*
* private workqueue to mac80211. mac80211 makes this accessible
* via ieee80211_queue_work()
*/
struct workqueue_struct *workqueue;
unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES];
/* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
spinlock_t queue_stop_reason_lock;
int open_count;
int monitors, cooked_mntrs;
/* number of interfaces with corresponding FIF_ flags */
int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll;
unsigned int filter_flags; /* FIF_* */
/* protects the aggregated multicast list and filter calls */
spinlock_t filter_lock;
/* used for uploading changed mc list */
struct work_struct reconfig_filter;
/* used to reconfigure hardware SM PS */
struct work_struct recalc_smps;
/* aggregated multicast list */
struct dev_addr_list *mc_list;
int mc_count;
bool tim_in_locked_section; /* see ieee80211_beacon_get() */
/*
* suspended is true if we finished all the suspend _and_ we have
* not yet come up from resume. This is to be used by mac80211
* to ensure driver sanity during suspend and mac80211's own
* sanity. It can eventually be used for WoW as well.
*/
bool suspended;
/*
* Resuming is true while suspended, but when we're reprogramming the
* hardware -- at that time it's allowed to use ieee80211_queue_work()
* again even though some other parts of the stack are still suspended
* and we still drop received frames to avoid waking the stack.
*/
bool resuming;
/*
* quiescing is true during the suspend process _only_ to
* ease timer cancelling etc.
*/
bool quiescing;
/* device is started */
bool started;
int tx_headroom; /* required headroom for hardware/radiotap */
/* Tasklet and skb queue to process calls from IRQ mode. All frames
* added to skb_queue will be processed, but frames in
* skb_queue_unreliable may be dropped if the total length of these
* queues increases over the limit. */
#define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
struct tasklet_struct tasklet;
struct sk_buff_head skb_queue;
struct sk_buff_head skb_queue_unreliable;
/* Station data */
/*
* The lock only protects the list, hash, timer and counter
* against manipulation, reads are done in RCU. Additionally,
* the lock protects each BSS's TIM bitmap.
*/
spinlock_t sta_lock;
unsigned long num_sta;
struct list_head sta_list;
struct sta_info *sta_hash[STA_HASH_SIZE];
struct timer_list sta_cleanup;
int sta_generation;
struct sk_buff_head pending[IEEE80211_MAX_QUEUES];
struct tasklet_struct tx_pending_tasklet;
/*
* This lock is used to prevent concurrent A-MPDU
* session start/stop processing, this thus also
* synchronises the ->ampdu_action() callback to
* drivers and limits it to one at a time.
*/
spinlock_t ampdu_lock;
/* number of interfaces with corresponding IFF_ flags */
atomic_t iff_allmultis, iff_promiscs;
struct rate_control_ref *rate_ctrl;
struct crypto_blkcipher *wep_tx_tfm;
struct crypto_blkcipher *wep_rx_tfm;
u32 wep_iv;
/* see iface.c */
struct list_head interfaces;
struct mutex iflist_mtx;
/*
* Key lock, protects sdata's key_list and sta_info's
* key pointers (write access, they're RCU.)
*/
spinlock_t key_lock;
/* Scanning and BSS list */
struct mutex scan_mtx;
unsigned long scanning;
struct cfg80211_ssid scan_ssid;
struct cfg80211_scan_request *int_scan_req;
struct cfg80211_scan_request *scan_req, *hw_scan_req;
struct ieee80211_channel *scan_channel;
enum ieee80211_band hw_scan_band;
int scan_channel_idx;
int scan_ies_len;
enum mac80211_scan_state next_scan_state;
struct delayed_work scan_work;
struct ieee80211_sub_if_data *scan_sdata;
enum nl80211_channel_type oper_channel_type;
struct ieee80211_channel *oper_channel, *csa_channel;
/* Temporary remain-on-channel for off-channel operations */
struct ieee80211_channel *tmp_channel;
enum nl80211_channel_type tmp_channel_type;
/* SNMP counters */
/* dot11CountersTable */
u32 dot11TransmittedFragmentCount;
u32 dot11MulticastTransmittedFrameCount;
u32 dot11FailedCount;
u32 dot11RetryCount;
u32 dot11MultipleRetryCount;
u32 dot11FrameDuplicateCount;
u32 dot11ReceivedFragmentCount;
u32 dot11MulticastReceivedFrameCount;
u32 dot11TransmittedFrameCount;
#ifdef CONFIG_MAC80211_LEDS
int tx_led_counter, rx_led_counter;
struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led;
char tx_led_name[32], rx_led_name[32],
assoc_led_name[32], radio_led_name[32];
#endif
#ifdef CONFIG_MAC80211_DEBUGFS
struct work_struct sta_debugfs_add;
#endif
#ifdef CONFIG_MAC80211_DEBUG_COUNTERS
/* TX/RX handler statistics */
unsigned int tx_handlers_drop;
unsigned int tx_handlers_queued;
unsigned int tx_handlers_drop_unencrypted;
unsigned int tx_handlers_drop_fragment;
unsigned int tx_handlers_drop_wep;
unsigned int tx_handlers_drop_not_assoc;
unsigned int tx_handlers_drop_unauth_port;
unsigned int rx_handlers_drop;
unsigned int rx_handlers_queued;
unsigned int rx_handlers_drop_nullfunc;
unsigned int rx_handlers_drop_defrag;
unsigned int rx_handlers_drop_short;
unsigned int rx_handlers_drop_passive_scan;
unsigned int tx_expand_skb_head;
unsigned int tx_expand_skb_head_cloned;
unsigned int rx_expand_skb_head;
unsigned int rx_expand_skb_head2;
unsigned int rx_handlers_fragments;
unsigned int tx_status_drop;
#define I802_DEBUG_INC(c) (c)++
#else /* CONFIG_MAC80211_DEBUG_COUNTERS */
#define I802_DEBUG_INC(c) do { } while (0)
#endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
int total_ps_buffered; /* total number of all buffered unicast and
* multicast packets for power saving stations
*/
int wifi_wme_noack_test;
unsigned int wmm_acm; /* bit field of ACM bits (BIT(802.1D tag)) */
bool pspolling;
bool offchannel_ps_enabled;
/*
* PS can only be enabled when we have exactly one managed
* interface (and monitors) in PS, this then points there.
*/
struct ieee80211_sub_if_data *ps_sdata;
struct work_struct dynamic_ps_enable_work;
struct work_struct dynamic_ps_disable_work;
struct timer_list dynamic_ps_timer;
struct notifier_block network_latency_notifier;
int user_power_level; /* in dBm */
int power_constr_level; /* in dBm */
enum ieee80211_smps_mode smps_mode;
struct work_struct restart_work;
#ifdef CONFIG_MAC80211_DEBUGFS
struct local_debugfsdentries {
struct dentry *rcdir;
struct dentry *stations;
struct dentry *keys;
} debugfs;
#endif
};
static inline struct ieee80211_sub_if_data *
IEEE80211_DEV_TO_SUB_IF(struct net_device *dev)
{
return netdev_priv(dev);
}
/* this struct represents 802.11n's RA/TID combination along with our vif */
struct ieee80211_ra_tid {
struct ieee80211_vif *vif;
u8 ra[ETH_ALEN];
u16 tid;
};
/* Parsed Information Elements */
struct ieee802_11_elems {
u8 *ie_start;
size_t total_len;
/* pointers to IEs */
u8 *ssid;
u8 *supp_rates;
u8 *fh_params;
u8 *ds_params;
u8 *cf_params;
struct ieee80211_tim_ie *tim;
u8 *ibss_params;
u8 *challenge;
u8 *wpa;
u8 *rsn;
u8 *erp_info;
u8 *ext_supp_rates;
u8 *wmm_info;
u8 *wmm_param;
struct ieee80211_ht_cap *ht_cap_elem;
struct ieee80211_ht_info *ht_info_elem;
struct ieee80211_meshconf_ie *mesh_config;
u8 *mesh_id;
u8 *peer_link;
u8 *preq;
u8 *prep;
u8 *perr;
struct ieee80211_rann_ie *rann;
u8 *ch_switch_elem;
u8 *country_elem;
u8 *pwr_constr_elem;
u8 *quiet_elem; /* first quite element */
u8 *timeout_int;
/* length of them, respectively */
u8 ssid_len;
u8 supp_rates_len;
u8 fh_params_len;
u8 ds_params_len;
u8 cf_params_len;
u8 tim_len;
u8 ibss_params_len;
u8 challenge_len;
u8 wpa_len;
u8 rsn_len;
u8 erp_info_len;
u8 ext_supp_rates_len;
u8 wmm_info_len;
u8 wmm_param_len;
u8 mesh_id_len;
u8 peer_link_len;
u8 preq_len;
u8 prep_len;
u8 perr_len;
u8 ch_switch_elem_len;
u8 country_elem_len;
u8 pwr_constr_elem_len;
u8 quiet_elem_len;
u8 num_of_quiet_elem; /* can be more the one */
u8 timeout_int_len;
};
static inline struct ieee80211_local *hw_to_local(
struct ieee80211_hw *hw)
{
return container_of(hw, struct ieee80211_local, hw);
}
static inline struct ieee80211_hw *local_to_hw(
struct ieee80211_local *local)
{
return &local->hw;
}
static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
{
return compare_ether_addr(raddr, addr) == 0 ||
is_broadcast_ether_addr(raddr);
}
int ieee80211_hw_config(struct ieee80211_local *local, u32 changed);
void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
u32 changed);
void ieee80211_configure_filter(struct ieee80211_local *local);
u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
extern bool ieee80211_disable_40mhz_24ghz;
/* STA code */
void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
struct cfg80211_auth_request *req);
int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
struct cfg80211_assoc_request *req);
int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
struct cfg80211_deauth_request *req,
void *cookie);
int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
struct cfg80211_disassoc_request *req,
void *cookie);
ieee80211_rx_result ieee80211_sta_rx_mgmt(struct ieee80211_sub_if_data *sdata,
struct sk_buff *skb);
void ieee80211_send_pspoll(struct ieee80211_local *local,
struct ieee80211_sub_if_data *sdata);
void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency);
int ieee80211_max_network_latency(struct notifier_block *nb,
unsigned long data, void *dummy);
void ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata,
struct ieee80211_channel_sw_ie *sw_elem,
struct ieee80211_bss *bss);
void ieee80211_sta_quiesce(struct ieee80211_sub_if_data *sdata);
void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata);
/* IBSS code */
void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata);
ieee80211_rx_result
ieee80211_ibss_rx_mgmt(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb);
struct sta_info *ieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata,
u8 *bssid, u8 *addr, u32 supp_rates);
int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
struct cfg80211_ibss_params *params);
int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata);
void ieee80211_ibss_quiesce(struct ieee80211_sub_if_data *sdata);
void ieee80211_ibss_restart(struct ieee80211_sub_if_data *sdata);
/* scan/BSS handling */
void ieee80211_scan_work(struct work_struct *work);
int ieee80211_request_internal_scan(struct ieee80211_sub_if_data *sdata,
const u8 *ssid, u8 ssid_len);
int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
struct cfg80211_scan_request *req);
void ieee80211_scan_cancel(struct ieee80211_local *local);
ieee80211_rx_result
ieee80211_scan_rx(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb);
void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
struct ieee80211_bss *
ieee80211_bss_info_update(struct ieee80211_local *local,
struct ieee80211_rx_status *rx_status,
struct ieee80211_mgmt *mgmt,
size_t len,
struct ieee802_11_elems *elems,
struct ieee80211_channel *channel,
bool beacon);
struct ieee80211_bss *
ieee80211_rx_bss_get(struct ieee80211_local *local, u8 *bssid, int freq,
u8 *ssid, u8 ssid_len);
void ieee80211_rx_bss_put(struct ieee80211_local *local,
struct ieee80211_bss *bss);
/* off-channel helpers */
void ieee80211_offchannel_stop_beaconing(struct ieee80211_local *local);
void ieee80211_offchannel_stop_station(struct ieee80211_local *local);
void ieee80211_offchannel_return(struct ieee80211_local *local,
bool enable_beaconing);
/* interface handling */
int ieee80211_iface_init(void);
void ieee80211_iface_exit(void);
int ieee80211_if_add(struct ieee80211_local *local, const char *name,
struct net_device **new_dev, enum nl80211_iftype type,
struct vif_params *params);
int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
enum nl80211_iftype type);
void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata);
void ieee80211_remove_interfaces(struct ieee80211_local *local);
u32 __ieee80211_recalc_idle(struct ieee80211_local *local);
void ieee80211_recalc_idle(struct ieee80211_local *local);
static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata)
{
return netif_running(sdata->dev);
}
/* tx handling */
void ieee80211_clear_tx_pending(struct ieee80211_local *local);
void ieee80211_tx_pending(unsigned long data);
netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb,
struct net_device *dev);
netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
struct net_device *dev);
/*
* radiotap header for status frames
*/
struct ieee80211_tx_status_rtap_hdr {
struct ieee80211_radiotap_header hdr;
u8 rate;
u8 padding_for_rate;
__le16 tx_flags;
u8 data_retries;
} __attribute__ ((packed));
/* HT */
void ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_supported_band *sband,
struct ieee80211_ht_cap *ht_cap_ie,
struct ieee80211_sta_ht_cap *ht_cap);
void ieee80211_send_bar(struct ieee80211_sub_if_data *sdata, u8 *ra, u16 tid, u16 ssn);
void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
const u8 *da, u16 tid,
u16 initiator, u16 reason_code);
int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata,
enum ieee80211_smps_mode smps, const u8 *da,
const u8 *bssid);
void ieee80211_sta_stop_rx_ba_session(struct ieee80211_sub_if_data *sdata, u8 *da,
u16 tid, u16 initiator, u16 reason);
void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
u16 initiator, u16 reason);
void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta);
void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
struct sta_info *sta,
struct ieee80211_mgmt *mgmt, size_t len);
void ieee80211_process_addba_resp(struct ieee80211_local *local,
struct sta_info *sta,
struct ieee80211_mgmt *mgmt,
size_t len);
void ieee80211_process_addba_request(struct ieee80211_local *local,
struct sta_info *sta,
struct ieee80211_mgmt *mgmt,
size_t len);
int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
enum ieee80211_back_parties initiator);
int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
enum ieee80211_back_parties initiator);
/* Spectrum management */
void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
struct ieee80211_mgmt *mgmt,
size_t len);
/* Suspend/resume and hw reconfiguration */
int ieee80211_reconfig(struct ieee80211_local *local);
void ieee80211_stop_device(struct ieee80211_local *local);
#ifdef CONFIG_PM
int __ieee80211_suspend(struct ieee80211_hw *hw);
static inline int __ieee80211_resume(struct ieee80211_hw *hw)
{
return ieee80211_reconfig(hw_to_local(hw));
}
#else
static inline int __ieee80211_suspend(struct ieee80211_hw *hw)
{
return 0;
}
static inline int __ieee80211_resume(struct ieee80211_hw *hw)
{
return 0;
}
#endif
/* utility functions/constants */
extern void *mac80211_wiphy_privid; /* for wiphy privid */
u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
enum nl80211_iftype type);
int ieee80211_frame_duration(struct ieee80211_local *local, size_t len,
int rate, int erp, int short_preamble);
void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx,
struct ieee80211_hdr *hdr, const u8 *tsc,
gfp_t gfp);
void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata);
void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb);
void ieee802_11_parse_elems(u8 *start, size_t len,
struct ieee802_11_elems *elems);
u32 ieee802_11_parse_elems_crc(u8 *start, size_t len,
struct ieee802_11_elems *elems,
u64 filter, u32 crc);
u32 ieee80211_mandatory_rates(struct ieee80211_local *local,
enum ieee80211_band band);
void ieee80211_dynamic_ps_enable_work(struct work_struct *work);
void ieee80211_dynamic_ps_disable_work(struct work_struct *work);
void ieee80211_dynamic_ps_timer(unsigned long data);
void ieee80211_send_nullfunc(struct ieee80211_local *local,
struct ieee80211_sub_if_data *sdata,
int powersave);
void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
struct ieee80211_hdr *hdr);
void ieee80211_beacon_loss_work(struct work_struct *work);
void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
enum queue_stop_reason reason);
void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
enum queue_stop_reason reason);
void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
enum queue_stop_reason reason);
void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
enum queue_stop_reason reason);
void ieee80211_add_pending_skb(struct ieee80211_local *local,
struct sk_buff *skb);
int ieee80211_add_pending_skbs(struct ieee80211_local *local,
struct sk_buff_head *skbs);
void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
u16 transaction, u16 auth_alg,
u8 *extra, size_t extra_len, const u8 *bssid,
const u8 *key, u8 key_len, u8 key_idx);
int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
const u8 *ie, size_t ie_len,
enum ieee80211_band band);
void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
const u8 *ssid, size_t ssid_len,
const u8 *ie, size_t ie_len);
void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata,
const size_t supp_rates_len,
const u8 *supp_rates);
u32 ieee80211_sta_get_rates(struct ieee80211_local *local,
struct ieee802_11_elems *elems,
enum ieee80211_band band);
int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata,
enum ieee80211_smps_mode smps_mode);
void ieee80211_recalc_smps(struct ieee80211_local *local,
struct ieee80211_sub_if_data *forsdata);
size_t ieee80211_ie_split(const u8 *ies, size_t ielen,
const u8 *ids, int n_ids, size_t offset);
size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset);
/* internal work items */
void ieee80211_work_init(struct ieee80211_local *local);
void ieee80211_add_work(struct ieee80211_work *wk);
void free_work(struct ieee80211_work *wk);
void ieee80211_work_purge(struct ieee80211_sub_if_data *sdata);
ieee80211_rx_result ieee80211_work_rx_mgmt(struct ieee80211_sub_if_data *sdata,
struct sk_buff *skb);
int ieee80211_wk_remain_on_channel(struct ieee80211_sub_if_data *sdata,
struct ieee80211_channel *chan,
enum nl80211_channel_type channel_type,
unsigned int duration, u64 *cookie);
int ieee80211_wk_cancel_remain_on_channel(
struct ieee80211_sub_if_data *sdata, u64 cookie);
#ifdef CONFIG_MAC80211_NOINLINE
#define debug_noinline noinline
#else
#define debug_noinline
#endif
#endif /* IEEE80211_I_H */
