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linux/net/mac80211/ieee80211_i.h
Johannes Berg d34ba2168a mac80211: don't delay station destruction 
If we can assume that stations are never referenced by the
driver after sta_state returns (and this is true since the
previous iwlmvm patch and for all other drivers) then we
don't need to delay station destruction, and don't need to
play tricks with rcu_barrier() etc.

This should speed up some scenarios like hostapd shutdown.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-12-16 11:29:45 +01:00

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/*
* Copyright 2002-2005, Instant802 Networks, Inc.
* Copyright 2005, Devicescape Software, Inc.
* Copyright 2006-2007 Jiri Benc <jbenc@suse.cz>
* Copyright 2007-2010 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 <linux/leds.h>
#include <linux/idr.h>
#include <net/ieee80211_radiotap.h>
#include <net/cfg80211.h>
#include <net/mac80211.h>
#include "key.h"
#include "sta_info.h"
#include "debug.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
/* power level hasn't been configured (or set to automatic) */
#define IEEE80211_UNSET_POWER_LEVEL INT_MIN
/*
* Some APs experience problems when working with U-APSD. Decrease the
* probability of that happening by using legacy mode for all ACs but VO.
* The AP that caused us trouble was a Cisco 4410N. It ignores our
* setting, and always treats non-VO ACs as legacy.
*/
#define IEEE80211_DEFAULT_UAPSD_QUEUES \
IEEE80211_WMM_IE_STA_QOSINFO_AC_VO
#define IEEE80211_DEFAULT_MAX_SP_LEN \
IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL
#define IEEE80211_DEAUTH_FRAME_LEN (24 /* hdr */ + 2 /* reason */)
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 {
u32 device_ts_beacon, device_ts_presp;
bool wmm_used;
bool uapsd_supported;
#define IEEE80211_MAX_SUPP_RATES 32
u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
size_t supp_rates_len;
struct ieee80211_rate *beacon_rate;
/*
* During association, 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;
/* Keep track of the corruption of the last beacon/probe response. */
u8 corrupt_data;
/* Keep track of what bits of information we have valid info for. */
u8 valid_data;
};
/**
* enum ieee80211_corrupt_data_flags - BSS data corruption flags
* @IEEE80211_BSS_CORRUPT_BEACON: last beacon frame received was corrupted
* @IEEE80211_BSS_CORRUPT_PROBE_RESP: last probe response received was corrupted
*
* These are bss flags that are attached to a bss in the
* @corrupt_data field of &struct ieee80211_bss.
*/
enum ieee80211_bss_corrupt_data_flags {
IEEE80211_BSS_CORRUPT_BEACON = BIT(0),
IEEE80211_BSS_CORRUPT_PROBE_RESP = BIT(1)
};
/**
* enum ieee80211_valid_data_flags - BSS valid data flags
* @IEEE80211_BSS_VALID_WMM: WMM/UAPSD data was gathered from non-corrupt IE
* @IEEE80211_BSS_VALID_RATES: Supported rates were gathered from non-corrupt IE
* @IEEE80211_BSS_VALID_ERP: ERP flag was gathered from non-corrupt IE
*
* These are bss flags that are attached to a bss in the
* @valid_data field of &struct ieee80211_bss. They show which parts
* of the data structure were recieved as a result of an un-corrupted
* beacon/probe response.
*/
enum ieee80211_bss_valid_data_flags {
IEEE80211_BSS_VALID_WMM = BIT(1),
IEEE80211_BSS_VALID_RATES = BIT(2),
IEEE80211_BSS_VALID_ERP = BIT(3)
};
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_UNICAST BIT(1)
#define IEEE80211_TX_PS_BUFFERED BIT(2)
struct ieee80211_tx_data {
struct sk_buff *skb;
struct sk_buff_head skbs;
struct ieee80211_local *local;
struct ieee80211_sub_if_data *sdata;
struct sta_info *sta;
struct ieee80211_key *key;
struct ieee80211_tx_rate rate;
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)
/**
* enum ieee80211_packet_rx_flags - packet RX flags
* @IEEE80211_RX_RA_MATCH: frame is destined to interface currently processed
* (incl. multicast frames)
* @IEEE80211_RX_FRAGMENTED: fragmented frame
* @IEEE80211_RX_AMSDU: a-MSDU packet
* @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed
* @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering
*
* These are per-frame flags that are attached to a frame in the
* @rx_flags field of &struct ieee80211_rx_status.
*/
enum ieee80211_packet_rx_flags {
IEEE80211_RX_RA_MATCH = BIT(1),
IEEE80211_RX_FRAGMENTED = BIT(2),
IEEE80211_RX_AMSDU = BIT(3),
IEEE80211_RX_MALFORMED_ACTION_FRM = BIT(4),
IEEE80211_RX_DEFERRED_RELEASE = BIT(5),
};
/**
* enum ieee80211_rx_flags - RX data flags
*
* @IEEE80211_RX_CMNTR: received on cooked monitor already
* @IEEE80211_RX_BEACON_REPORTED: This frame was already reported
* to cfg80211_report_obss_beacon().
*
* These flags are used across handling multiple interfaces
* for a single frame.
*/
enum ieee80211_rx_flags {
IEEE80211_RX_CMNTR = BIT(0),
IEEE80211_RX_BEACON_REPORTED = BIT(1),
};
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;
/*
* Index into sequence numbers array, 0..16
* since the last (16) is used for non-QoS,
* will be 16 on non-QoS frames.
*/
int seqno_idx;
/*
* Index into the security IV/PN arrays, 0..16
* since the last (16) is used for CCMP-encrypted
* management frames, will be set to 16 on mgmt
* frames and 0 on non-QoS frames.
*/
int security_idx;
u32 tkip_iv32;
u16 tkip_iv16;
};
struct beacon_data {
u8 *head, *tail;
int head_len, tail_len;
struct rcu_head rcu_head;
};
struct probe_resp {
struct rcu_head rcu_head;
int len;
u8 data[0];
};
struct ps_data {
/* 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 bc_buf;
atomic_t num_sta_ps; /* number of stations in PS mode */
int dtim_count;
bool dtim_bc_mc;
};
struct ieee80211_if_ap {
struct beacon_data __rcu *beacon;
struct probe_resp __rcu *probe_resp;
/* to be used after channel switch. */
struct cfg80211_beacon_data *next_beacon;
struct list_head vlans;
struct ps_data ps;
atomic_t num_mcast_sta; /* number of stations receiving multicast */
enum ieee80211_smps_mode req_smps, /* requested smps mode */
driver_smps_mode; /* smps mode request */
struct work_struct request_smps_work;
};
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 __rcu *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 */
__u32 dropped_frames_congestion;/* Not forwarded due to congestion */
};
#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;
};
#if HZ/100 == 0
#define IEEE80211_ROC_MIN_LEFT 1
#else
#define IEEE80211_ROC_MIN_LEFT (HZ/100)
#endif
struct ieee80211_roc_work {
struct list_head list;
struct list_head dependents;
struct delayed_work work;
struct ieee80211_sub_if_data *sdata;
struct ieee80211_channel *chan;
bool started, abort, hw_begun, notified;
bool to_be_freed;
unsigned long hw_start_time;
u32 duration, req_duration;
struct sk_buff *frame;
u64 cookie, mgmt_tx_cookie;
enum ieee80211_roc_type type;
};
/* flags used in struct ieee80211_if_managed.flags */
enum ieee80211_sta_flags {
IEEE80211_STA_CONNECTION_POLL = BIT(1),
IEEE80211_STA_CONTROL_PORT = BIT(2),
IEEE80211_STA_DISABLE_HT = BIT(4),
IEEE80211_STA_CSA_RECEIVED = BIT(5),
IEEE80211_STA_MFP_ENABLED = BIT(6),
IEEE80211_STA_UAPSD_ENABLED = BIT(7),
IEEE80211_STA_NULLFUNC_ACKED = BIT(8),
IEEE80211_STA_RESET_SIGNAL_AVE = BIT(9),
IEEE80211_STA_DISABLE_40MHZ = BIT(10),
IEEE80211_STA_DISABLE_VHT = BIT(11),
IEEE80211_STA_DISABLE_80P80MHZ = BIT(12),
IEEE80211_STA_DISABLE_160MHZ = BIT(13),
IEEE80211_STA_DISABLE_WMM = BIT(14),
};
struct ieee80211_mgd_auth_data {
struct cfg80211_bss *bss;
unsigned long timeout;
int tries;
u16 algorithm, expected_transaction;
u8 key[WLAN_KEY_LEN_WEP104];
u8 key_len, key_idx;
bool done;
bool timeout_started;
u16 sae_trans, sae_status;
size_t data_len;
u8 data[];
};
struct ieee80211_mgd_assoc_data {
struct cfg80211_bss *bss;
const u8 *supp_rates;
unsigned long timeout;
int tries;
u16 capability;
u8 prev_bssid[ETH_ALEN];
u8 ssid[IEEE80211_MAX_SSID_LEN];
u8 ssid_len;
u8 supp_rates_len;
bool wmm, uapsd;
bool need_beacon;
bool synced;
bool timeout_started;
u8 ap_ht_param;
struct ieee80211_vht_cap ap_vht_cap;
size_t ie_len;
u8 ie[];
};
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 monitor_work;
struct work_struct chswitch_work;
struct work_struct beacon_connection_loss_work;
struct work_struct csa_connection_drop_work;
unsigned long beacon_timeout;
unsigned long probe_timeout;
int probe_send_count;
bool nullfunc_failed;
bool connection_loss;
struct cfg80211_bss *associated;
struct ieee80211_mgd_auth_data *auth_data;
struct ieee80211_mgd_assoc_data *assoc_data;
u8 bssid[ETH_ALEN];
u16 aid;
bool powersave; /* powersave requested for this iface */
bool broken_ap; /* AP is broken -- turn off powersave */
bool have_beacon;
u8 dtim_period;
enum ieee80211_smps_mode req_smps, /* requested smps mode */
driver_smps_mode; /* smps mode request */
struct work_struct request_smps_work;
unsigned int flags;
bool beacon_crc_valid;
u32 beacon_crc;
bool status_acked;
bool status_received;
__le16 status_fc;
enum {
IEEE80211_MFP_DISABLED,
IEEE80211_MFP_OPTIONAL,
IEEE80211_MFP_REQUIRED
} mfp; /* management frame protection */
/*
* Bitmask of enabled u-apsd queues,
* IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association
* to take effect.
*/
unsigned int uapsd_queues;
/*
* Maximum number of buffered frames AP can deliver during a
* service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar.
* Needs a new association to take effect.
*/
unsigned int uapsd_max_sp_len;
int wmm_last_param_set;
u8 use_4addr;
s16 p2p_noa_index;
/* Signal strength from the last Beacon frame in the current BSS. */
int last_beacon_signal;
/*
* Weighted average of the signal strength from Beacon frames in the
* current BSS. This is in units of 1/16 of the signal unit to maintain
* accuracy and to speed up calculations, i.e., the value need to be
* divided by 16 to get the actual value.
*/
int ave_beacon_signal;
/*
* Number of Beacon frames used in ave_beacon_signal. This can be used
* to avoid generating less reliable cqm events that would be based
* only on couple of received frames.
*/
unsigned int count_beacon_signal;
/*
* Last Beacon frame signal strength average (ave_beacon_signal / 16)
* that triggered a cqm event. 0 indicates that no event has been
* generated for the current association.
*/
int last_cqm_event_signal;
/*
* State variables for keeping track of RSSI of the AP currently
* connected to and informing driver when RSSI has gone
* below/above a certain threshold.
*/
int rssi_min_thold, rssi_max_thold;
int last_ave_beacon_signal;
struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
struct ieee80211_vht_cap vht_capa; /* configured VHT overrides */
struct ieee80211_vht_cap vht_capa_mask; /* Valid parts of vht_capa */
};
struct ieee80211_if_ibss {
struct timer_list timer;
struct work_struct csa_connection_drop_work;
unsigned long last_scan_completed;
u32 basic_rates;
bool fixed_bssid;
bool fixed_channel;
bool privacy;
bool control_port;
bool userspace_handles_dfs;
u8 bssid[ETH_ALEN] __aligned(2);
u8 ssid[IEEE80211_MAX_SSID_LEN];
u8 ssid_len, ie_len;
u8 *ie;
struct cfg80211_chan_def chandef;
unsigned long ibss_join_req;
/* probe response/beacon for IBSS */
struct beacon_data __rcu *presp;
struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
spinlock_t incomplete_lock;
struct list_head incomplete_stations;
enum {
IEEE80211_IBSS_MLME_SEARCH,
IEEE80211_IBSS_MLME_JOINED,
} state;
};
/**
* struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface
*
* these declarations define the interface, which enables
* vendor-specific mesh synchronization
*
*/
struct ieee802_11_elems;
struct ieee80211_mesh_sync_ops {
void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata,
u16 stype,
struct ieee80211_mgmt *mgmt,
struct ieee802_11_elems *elems,
struct ieee80211_rx_status *rx_status);
void (*adjust_tbtt)(struct ieee80211_sub_if_data *sdata);
/* add other framework functions here */
};
struct mesh_csa_settings {
struct rcu_head rcu_head;
struct cfg80211_csa_settings settings;
};
struct ieee80211_if_mesh {
struct timer_list housekeeping_timer;
struct timer_list mesh_path_timer;
struct timer_list mesh_path_root_timer;
unsigned long wrkq_flags;
unsigned long mbss_changed;
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;
/* Time when it's ok to send next PERR */
unsigned long next_perr;
/* Timestamp of last PREQ 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;
atomic_t estab_plinks;
u32 mesh_seqnum;
bool accepting_plinks;
int num_gates;
struct beacon_data __rcu *beacon;
const u8 *ie;
u8 ie_len;
enum {
IEEE80211_MESH_SEC_NONE = 0x0,
IEEE80211_MESH_SEC_AUTHED = 0x1,
IEEE80211_MESH_SEC_SECURED = 0x2,
} security;
bool user_mpm;
/* Extensible Synchronization Framework */
const struct ieee80211_mesh_sync_ops *sync_ops;
s64 sync_offset_clockdrift_max;
spinlock_t sync_offset_lock;
bool adjusting_tbtt;
/* mesh power save */
enum nl80211_mesh_power_mode nonpeer_pm;
int ps_peers_light_sleep;
int ps_peers_deep_sleep;
struct ps_data ps;
/* Channel Switching Support */
struct mesh_csa_settings __rcu *csa;
bool chsw_init;
u8 chsw_ttl;
u16 pre_value;
};
#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.
* @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume.
* @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver
*/
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),
IEEE80211_SDATA_DISCONNECT_RESUME = BIT(4),
IEEE80211_SDATA_IN_DRIVER = BIT(5),
};
/**
* enum ieee80211_sdata_state_bits - virtual interface state bits
* @SDATA_STATE_RUNNING: virtual interface is up & running; this
* mirrors netif_running() but is separate for interface type
* change handling while the interface is up
* @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel
* mode, so queues are stopped
* @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due
* to offchannel, reset when offchannel returns
*/
enum ieee80211_sdata_state_bits {
SDATA_STATE_RUNNING,
SDATA_STATE_OFFCHANNEL,
SDATA_STATE_OFFCHANNEL_BEACON_STOPPED,
};
/**
* enum ieee80211_chanctx_mode - channel context configuration mode
*
* @IEEE80211_CHANCTX_SHARED: channel context may be used by
* multiple interfaces
* @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used
* only by a single interface. This can be used for example for
* non-fixed channel IBSS.
*/
enum ieee80211_chanctx_mode {
IEEE80211_CHANCTX_SHARED,
IEEE80211_CHANCTX_EXCLUSIVE
};
struct ieee80211_chanctx {
struct list_head list;
struct rcu_head rcu_head;
enum ieee80211_chanctx_mode mode;
int refcount;
bool driver_present;
struct ieee80211_chanctx_conf conf;
};
struct ieee80211_sub_if_data {
struct list_head list;
struct wireless_dev wdev;
/* keys */
struct list_head key_list;
/* count for keys needing tailroom space allocation */
int crypto_tx_tailroom_needed_cnt;
int crypto_tx_tailroom_pending_dec;
struct delayed_work dec_tailroom_needed_wk;
struct net_device *dev;
struct ieee80211_local *local;
unsigned int flags;
unsigned long state;
int drop_unencrypted;
char name[IFNAMSIZ];
/* Fragment table for host-based reassembly */
struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX];
unsigned int fragment_next;
/* TID bitmap for NoAck policy */
u16 noack_map;
/* bit field of ACM bits (BIT(802.1D tag)) */
u8 wmm_acm;
struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS];
struct ieee80211_key __rcu *default_unicast_key;
struct ieee80211_key __rcu *default_multicast_key;
struct ieee80211_key __rcu *default_mgmt_key;
u16 sequence_number;
__be16 control_port_protocol;
bool control_port_no_encrypt;
int encrypt_headroom;
struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS];
struct work_struct csa_finalize_work;
int csa_counter_offset_beacon;
int csa_counter_offset_presp;
bool csa_radar_required;
struct cfg80211_chan_def csa_chandef;
/* used to reconfigure hardware SM PS */
struct work_struct recalc_smps;
struct work_struct work;
struct sk_buff_head skb_queue;
u8 needed_rx_chains;
enum ieee80211_smps_mode smps_mode;
int user_power_level; /* in dBm */
int ap_power_level; /* in dBm */
bool radar_required;
struct delayed_work dfs_cac_timer_work;
/*
* 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;
/* bitmap of allowed (non-MCS) rate indexes for rate control */
u32 rc_rateidx_mask[IEEE80211_NUM_BANDS];
bool rc_has_mcs_mask[IEEE80211_NUM_BANDS];
u8 rc_rateidx_mcs_mask[IEEE80211_NUM_BANDS][IEEE80211_HT_MCS_MASK_LEN];
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;
struct ieee80211_if_mesh mesh;
u32 mntr_flags;
} u;
#ifdef CONFIG_MAC80211_DEBUGFS
struct {
struct dentry *subdir_stations;
struct dentry *default_unicast_key;
struct dentry *default_multicast_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 sdata_lock(struct ieee80211_sub_if_data *sdata)
__acquires(&sdata->wdev.mtx)
{
mutex_lock(&sdata->wdev.mtx);
__acquire(&sdata->wdev.mtx);
}
static inline void sdata_unlock(struct ieee80211_sub_if_data *sdata)
__releases(&sdata->wdev.mtx)
{
mutex_unlock(&sdata->wdev.mtx);
__release(&sdata->wdev.mtx);
}
#define sdata_dereference(p, sdata) \
rcu_dereference_protected(p, lockdep_is_held(&sdata->wdev.mtx))
static inline void
sdata_assert_lock(struct ieee80211_sub_if_data *sdata)
{
lockdep_assert_held(&sdata->wdev.mtx);
}
static inline enum ieee80211_band
ieee80211_get_sdata_band(struct ieee80211_sub_if_data *sdata)
{
enum ieee80211_band band = IEEE80211_BAND_2GHZ;
struct ieee80211_chanctx_conf *chanctx_conf;
rcu_read_lock();
chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
if (!WARN_ON(!chanctx_conf))
band = chanctx_conf->def.chan->band;
rcu_read_unlock();
return band;
}
static inline int
ieee80211_chandef_get_shift(struct cfg80211_chan_def *chandef)
{
switch (chandef->width) {
case NL80211_CHAN_WIDTH_5:
return 2;
case NL80211_CHAN_WIDTH_10:
return 1;
default:
return 0;
}
}
static inline int
ieee80211_vif_get_shift(struct ieee80211_vif *vif)
{
struct ieee80211_chanctx_conf *chanctx_conf;
int shift = 0;
rcu_read_lock();
chanctx_conf = rcu_dereference(vif->chanctx_conf);
if (chanctx_conf)
shift = ieee80211_chandef_get_shift(&chanctx_conf->def);
rcu_read_unlock();
return shift;
}
enum sdata_queue_type {
IEEE80211_SDATA_QUEUE_TYPE_FRAME = 0,
IEEE80211_SDATA_QUEUE_AGG_START = 1,
IEEE80211_SDATA_QUEUE_AGG_STOP = 2,
};
enum {
IEEE80211_RX_MSG = 1,
IEEE80211_TX_STATUS_MSG = 2,
};
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,
IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL,
IEEE80211_QUEUE_STOP_REASON_FLUSH,
};
#ifdef CONFIG_MAC80211_LEDS
struct tpt_led_trigger {
struct led_trigger trig;
char name[32];
const struct ieee80211_tpt_blink *blink_table;
unsigned int blink_table_len;
struct timer_list timer;
unsigned long prev_traffic;
unsigned long tx_bytes, rx_bytes;
unsigned int active, want;
bool running;
};
#endif
/*
* struct ieee80211_tx_latency_bin_ranges - Tx latency statistics bins ranges
*
* Measuring Tx latency statistics. Counts how many Tx frames transmitted in a
* certain latency range (in Milliseconds). Each station that uses these
* ranges will have bins to count the amount of frames received in that range.
* The user can configure the ranges via debugfs.
* If ranges is NULL then Tx latency statistics bins are disabled for all
* stations.
*
* @n_ranges: number of ranges that are taken in account
* @ranges: the ranges that the user requested or NULL if disabled.
*/
struct ieee80211_tx_latency_bin_ranges {
int n_ranges;
u32 ranges[];
};
/**
* 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_ONCHANNEL_SCANNING: Do a software scan on only the current operating
* channel. This should not interrupt normal traffic.
* @SCAN_COMPLETED: Set for our scan work function when the driver reported
* that the scan completed.
* @SCAN_ABORTED: Set for our scan work function when the driver reported
* a scan complete for an aborted scan.
* @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being
* cancelled.
*/
enum {
SCAN_SW_SCANNING,
SCAN_HW_SCANNING,
SCAN_ONCHANNEL_SCANNING,
SCAN_COMPLETED,
SCAN_ABORTED,
SCAN_HW_CANCELLED,
};
/**
* 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_SUSPEND: Suspend the scan and go back to operating channel to
* send out data
* @SCAN_RESUME: Resume the scan and scan the next channel
* @SCAN_ABORT: Abort the scan and go back to operating channel
*/
enum mac80211_scan_state {
SCAN_DECISION,
SCAN_SET_CHANNEL,
SCAN_SEND_PROBE,
SCAN_SUSPEND,
SCAN_RESUME,
SCAN_ABORT,
};
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;
/*
* 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,
fif_probe_req;
int probe_req_reg;
unsigned int filter_flags; /* FIF_* */
bool wiphy_ciphers_allocated;
bool use_chanctx;
/* protects the aggregated multicast list and filter calls */
spinlock_t filter_lock;
/* used for uploading changed mc list */
struct work_struct reconfig_filter;
/* aggregated multicast list */
struct netdev_hw_addr_list mc_list;
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;
/* device is during a HW reconfig */
bool in_reconfig;
/* wowlan is enabled -- don't reconfig on resume */
bool wowlan;
/* DFS/radar detection is enabled */
bool radar_detect_enabled;
struct work_struct radar_detected_work;
/* number of RX chains the hardware has */
u8 rx_chains;
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;
spinlock_t rx_path_lock;
/* Station data */
/*
* The mutex only protects the list, hash table and
* counter, reads are done with RCU.
*/
struct mutex sta_mtx;
spinlock_t tim_lock;
unsigned long num_sta;
struct list_head sta_list;
struct sta_info __rcu *sta_hash[STA_HASH_SIZE];
struct timer_list sta_cleanup;
int sta_generation;
/*
* Tx latency statistics parameters for all stations.
* Can enable via debugfs (NULL when disabled).
*/
struct ieee80211_tx_latency_bin_ranges __rcu *tx_latency;
struct sk_buff_head pending[IEEE80211_MAX_QUEUES];
struct tasklet_struct tx_pending_tasklet;
atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES];
/* number of interfaces with corresponding IFF_ flags */
atomic_t iff_allmultis, iff_promiscs;
struct rate_control_ref *rate_ctrl;
struct crypto_cipher *wep_tx_tfm;
struct crypto_cipher *wep_rx_tfm;
u32 wep_iv;
/* see iface.c */
struct list_head interfaces;
struct mutex iflist_mtx;
/*
* Key mutex, protects sdata's key_list and sta_info's
* key pointers (write access, they're RCU.)
*/
struct mutex key_mtx;
/* mutex for scan and work locking */
struct mutex mtx;
/* Scanning and BSS list */
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 cfg80211_chan_def scan_chandef;
enum ieee80211_band hw_scan_band;
int scan_channel_idx;
int scan_ies_len;
int hw_scan_ies_bufsize;
struct work_struct sched_scan_stopped_work;
struct ieee80211_sub_if_data __rcu *sched_scan_sdata;
unsigned long leave_oper_channel_time;
enum mac80211_scan_state next_scan_state;
struct delayed_work scan_work;
struct ieee80211_sub_if_data __rcu *scan_sdata;
/* For backward compatibility only -- do not use */
struct cfg80211_chan_def _oper_chandef;
/* Temporary remain-on-channel for off-channel operations */
struct ieee80211_channel *tmp_channel;
/* channel contexts */
struct list_head chanctx_list;
struct mutex chanctx_mtx;
/* 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
struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led;
struct tpt_led_trigger *tpt_led_trigger;
char tx_led_name[32], rx_led_name[32],
assoc_led_name[32], radio_led_name[32];
#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 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
*/
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;
struct notifier_block ifa_notifier;
struct notifier_block ifa6_notifier;
/*
* The dynamic ps timeout configured from user space via WEXT -
* this will override whatever chosen by mac80211 internally.
*/
int dynamic_ps_forced_timeout;
int user_power_level; /* in dBm, for all interfaces */
enum ieee80211_smps_mode smps_mode;
struct work_struct restart_work;
#ifdef CONFIG_MAC80211_DEBUGFS
struct local_debugfsdentries {
struct dentry *rcdir;
struct dentry *keys;
} debugfs;
#endif
/*
* Remain-on-channel support
*/
struct list_head roc_list;
struct work_struct hw_roc_start, hw_roc_done;
unsigned long hw_roc_start_time;
u64 roc_cookie_counter;
struct idr ack_status_frames;
spinlock_t ack_status_lock;
struct ieee80211_sub_if_data __rcu *p2p_sdata;
/* virtual monitor interface */
struct ieee80211_sub_if_data __rcu *monitor_sdata;
struct cfg80211_chan_def monitor_chandef;
};
static inline struct ieee80211_sub_if_data *
IEEE80211_DEV_TO_SUB_IF(struct net_device *dev)
{
return netdev_priv(dev);
}
static inline struct ieee80211_sub_if_data *
IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev)
{
return container_of(wdev, struct ieee80211_sub_if_data, wdev);
}
/* this struct represents 802.11n's RA/TID combination */
struct ieee80211_ra_tid {
u8 ra[ETH_ALEN];
u16 tid;
};
/* this struct holds the value parsing from channel switch IE */
struct ieee80211_csa_ie {
struct cfg80211_chan_def chandef;
u8 mode;
u8 count;
u8 ttl;
u16 pre_value;
};
/* Parsed Information Elements */
struct ieee802_11_elems {
const u8 *ie_start;
size_t total_len;
/* pointers to IEs */
const u8 *ssid;
const u8 *supp_rates;
const u8 *ds_params;
const struct ieee80211_tim_ie *tim;
const u8 *challenge;
const u8 *rsn;
const u8 *erp_info;
const u8 *ext_supp_rates;
const u8 *wmm_info;
const u8 *wmm_param;
const struct ieee80211_ht_cap *ht_cap_elem;
const struct ieee80211_ht_operation *ht_operation;
const struct ieee80211_vht_cap *vht_cap_elem;
const struct ieee80211_vht_operation *vht_operation;
const struct ieee80211_meshconf_ie *mesh_config;
const u8 *mesh_id;
const u8 *peering;
const __le16 *awake_window;
const u8 *preq;
const u8 *prep;
const u8 *perr;
const struct ieee80211_rann_ie *rann;
const struct ieee80211_channel_sw_ie *ch_switch_ie;
const struct ieee80211_ext_chansw_ie *ext_chansw_ie;
const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie;
const u8 *country_elem;
const u8 *pwr_constr_elem;
const struct ieee80211_timeout_interval_ie *timeout_int;
const u8 *opmode_notif;
const struct ieee80211_sec_chan_offs_ie *sec_chan_offs;
const struct ieee80211_mesh_chansw_params_ie *mesh_chansw_params_ie;
/* length of them, respectively */
u8 ssid_len;
u8 supp_rates_len;
u8 tim_len;
u8 challenge_len;
u8 rsn_len;
u8 ext_supp_rates_len;
u8 wmm_info_len;
u8 wmm_param_len;
u8 mesh_id_len;
u8 peering_len;
u8 preq_len;
u8 prep_len;
u8 perr_len;
u8 country_elem_len;
/* whether a parse error occurred while retrieving these elements */
bool parse_error;
};
static inline struct ieee80211_local *hw_to_local(
struct ieee80211_hw *hw)
{
return container_of(hw, struct ieee80211_local, hw);
}
static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
{
return ether_addr_equal(raddr, addr) ||
is_broadcast_ether_addr(raddr);
}
static inline bool
ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status)
{
WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START &&
status->flag & RX_FLAG_MACTIME_END);
return status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END);
}
u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
struct ieee80211_rx_status *status,
unsigned int mpdu_len,
unsigned int mpdu_offset);
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);
/* 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);
int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
struct cfg80211_disassoc_request *req);
void ieee80211_send_pspoll(struct ieee80211_local *local,
struct ieee80211_sub_if_data *sdata);
void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency);
void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata);
int ieee80211_max_network_latency(struct notifier_block *nb,
unsigned long data, void *dummy);
int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata);
void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata);
void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
struct sk_buff *skb);
void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata);
void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata);
void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata);
void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata,
__le16 fc, bool acked);
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);
void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata,
const u8 *bssid, const 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_work(struct ieee80211_sub_if_data *sdata);
void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
struct sk_buff *skb);
int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata,
struct cfg80211_csa_settings *csa_settings);
int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata);
void ieee80211_ibss_stop(struct ieee80211_sub_if_data *sdata);
/* mesh code */
void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata);
void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
struct sk_buff *skb);
int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data *sdata,
struct cfg80211_csa_settings *csa_settings,
bool csa_action);
int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata);
/* scan/BSS handling */
void ieee80211_scan_work(struct work_struct *work);
int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata,
const u8 *ssid, u8 ssid_len,
struct ieee80211_channel *chan,
enum nl80211_bss_scan_width scan_width);
int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
struct cfg80211_scan_request *req);
void ieee80211_scan_cancel(struct ieee80211_local *local);
void ieee80211_run_deferred_scan(struct ieee80211_local *local);
void ieee80211_scan_rx(struct ieee80211_local *local, 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);
void ieee80211_rx_bss_put(struct ieee80211_local *local,
struct ieee80211_bss *bss);
/* scheduled scan handling */
int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
struct cfg80211_sched_scan_request *req);
int ieee80211_request_sched_scan_stop(struct ieee80211_sub_if_data *sdata);
void ieee80211_sched_scan_stopped_work(struct work_struct *work);
/* off-channel helpers */
void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local);
void ieee80211_offchannel_return(struct ieee80211_local *local);
void ieee80211_roc_setup(struct ieee80211_local *local);
void ieee80211_start_next_roc(struct ieee80211_local *local);
void ieee80211_roc_purge(struct ieee80211_local *local,
struct ieee80211_sub_if_data *sdata);
void ieee80211_roc_notify_destroy(struct ieee80211_roc_work *roc, bool free);
void ieee80211_sw_roc_work(struct work_struct *work);
void ieee80211_handle_roc_started(struct ieee80211_roc_work *roc);
/* channel switch handling */
void ieee80211_csa_finalize_work(struct work_struct *work);
/* interface handling */
int ieee80211_iface_init(void);
void ieee80211_iface_exit(void);
int ieee80211_if_add(struct ieee80211_local *local, const char *name,
struct wireless_dev **new_wdev, 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_idle_off(struct ieee80211_local *local);
void ieee80211_recalc_idle(struct ieee80211_local *local);
void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata,
const int offset);
int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up);
void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata);
int ieee80211_add_virtual_monitor(struct ieee80211_local *local);
void ieee80211_del_virtual_monitor(struct ieee80211_local *local);
bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata);
void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata);
int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
struct cfg80211_beacon_data *params);
static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata)
{
return test_bit(SDATA_STATE_RUNNING, &sdata->state);
}
/* 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);
void ieee80211_purge_tx_queue(struct ieee80211_hw *hw,
struct sk_buff_head *skbs);
/* HT */
void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata,
struct ieee80211_sta_ht_cap *ht_cap);
bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata,
struct ieee80211_supported_band *sband,
const struct ieee80211_ht_cap *ht_cap_ie,
struct sta_info *sta);
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_request_smps_ap_work(struct work_struct *work);
void ieee80211_request_smps_mgd_work(struct work_struct *work);
bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old,
enum ieee80211_smps_mode smps_mode_new);
void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
u16 initiator, u16 reason, bool stop);
void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
u16 initiator, u16 reason, bool stop);
void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta,
enum ieee80211_agg_stop_reason reason);
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_agg_stop_reason reason);
int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
enum ieee80211_agg_stop_reason reason);
void ieee80211_start_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u16 tid);
void ieee80211_stop_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u8 tid);
void ieee80211_ba_session_work(struct work_struct *work);
void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid);
void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid);
u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs);
/* VHT */
void
ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata,
struct ieee80211_supported_band *sband,
const struct ieee80211_vht_cap *vht_cap_ie,
struct sta_info *sta);
enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta);
void ieee80211_sta_set_rx_nss(struct sta_info *sta);
void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
struct sta_info *sta, u8 opmode,
enum ieee80211_band band, bool nss_only);
void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata,
struct ieee80211_sta_vht_cap *vht_cap);
/* Spectrum management */
void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
struct ieee80211_mgmt *mgmt,
size_t len);
/**
* ieee80211_parse_ch_switch_ie - parses channel switch IEs
* @sdata: the sdata of the interface which has received the frame
* @elems: parsed 802.11 elements received with the frame
* @beacon: indicates if the frame was a beacon or probe response
* @current_band: indicates the current band
* @sta_flags: contains information about own capabilities and restrictions
* to decide which channel switch announcements can be accepted. Only the
* following subset of &enum ieee80211_sta_flags are evaluated:
* %IEEE80211_STA_DISABLE_HT, %IEEE80211_STA_DISABLE_VHT,
* %IEEE80211_STA_DISABLE_40MHZ, %IEEE80211_STA_DISABLE_80P80MHZ,
* %IEEE80211_STA_DISABLE_160MHZ.
* @bssid: the currently connected bssid (for reporting)
* @csa_ie: parsed 802.11 csa elements on count, mode, chandef and mesh ttl.
All of them will be filled with if success only.
* Return: 0 on success, <0 on error and >0 if there is nothing to parse.
*/
int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata,
struct ieee802_11_elems *elems, bool beacon,
enum ieee80211_band current_band,
u32 sta_flags, u8 *bssid,
struct ieee80211_csa_ie *csa_ie);
/* Suspend/resume and hw reconfiguration */
int ieee80211_reconfig(struct ieee80211_local *local);
void ieee80211_stop_device(struct ieee80211_local *local);
int __ieee80211_suspend(struct ieee80211_hw *hw,
struct cfg80211_wowlan *wowlan);
static inline int __ieee80211_resume(struct ieee80211_hw *hw)
{
struct ieee80211_local *local = hw_to_local(hw);
WARN(test_bit(SCAN_HW_SCANNING, &local->scanning),
"%s: resume with hardware scan still in progress\n",
wiphy_name(hw->wiphy));
return ieee80211_reconfig(hw_to_local(hw));
}
/* 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(enum ieee80211_band band, size_t len,
int rate, int erp, int short_preamble,
int shift);
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,
bool bss_notify);
void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb,
enum ieee80211_band band);
void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
struct sk_buff *skb, int tid,
enum ieee80211_band band);
static inline void
ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
struct sk_buff *skb, int tid,
enum ieee80211_band band)
{
rcu_read_lock();
__ieee80211_tx_skb_tid_band(sdata, skb, tid, band);
rcu_read_unlock();
}
static inline void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata,
struct sk_buff *skb, int tid)
{
struct ieee80211_chanctx_conf *chanctx_conf;
rcu_read_lock();
chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
if (WARN_ON(!chanctx_conf)) {
rcu_read_unlock();
kfree_skb(skb);
return;
}
__ieee80211_tx_skb_tid_band(sdata, skb, tid,
chanctx_conf->def.chan->band);
rcu_read_unlock();
}
static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata,
struct sk_buff *skb)
{
/* Send all internal mgmt frames on VO. Accordingly set TID to 7. */
ieee80211_tx_skb_tid(sdata, skb, 7);
}
u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
struct ieee802_11_elems *elems,
u64 filter, u32 crc);
static inline void ieee802_11_parse_elems(const u8 *start, size_t len,
bool action,
struct ieee802_11_elems *elems)
{
ieee802_11_parse_elems_crc(start, len, action, elems, 0, 0);
}
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_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
struct ieee80211_hdr *hdr, bool ack);
void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
unsigned long queues,
enum queue_stop_reason reason);
void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
unsigned long queues,
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_propagate_queue_wake(struct ieee80211_local *local, int queue);
void ieee80211_add_pending_skb(struct ieee80211_local *local,
struct sk_buff *skb);
void ieee80211_add_pending_skbs_fn(struct ieee80211_local *local,
struct sk_buff_head *skbs,
void (*fn)(void *data), void *data);
static inline void ieee80211_add_pending_skbs(struct ieee80211_local *local,
struct sk_buff_head *skbs)
{
ieee80211_add_pending_skbs_fn(local, skbs, NULL, NULL);
}
void ieee80211_flush_queues(struct ieee80211_local *local,
struct ieee80211_sub_if_data *sdata);
void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
u16 transaction, u16 auth_alg, u16 status,
const u8 *extra, size_t extra_len, const u8 *bssid,
const u8 *da, const u8 *key, u8 key_len, u8 key_idx,
u32 tx_flags);
void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
const u8 *bssid, u16 stype, u16 reason,
bool send_frame, u8 *frame_buf);
int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
size_t buffer_len, const u8 *ie, size_t ie_len,
enum ieee80211_band band, u32 rate_mask,
struct cfg80211_chan_def *chandef);
struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
u8 *dst, u32 ratemask,
struct ieee80211_channel *chan,
const u8 *ssid, size_t ssid_len,
const u8 *ie, size_t ie_len,
bool directed);
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,
u32 ratemask, bool directed, u32 tx_flags,
struct ieee80211_channel *channel, bool scan);
u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata,
struct ieee802_11_elems *elems,
enum ieee80211_band band, u32 *basic_rates);
int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
enum ieee80211_smps_mode smps_mode);
int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata,
enum ieee80211_smps_mode smps_mode);
void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata);
void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata);
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);
u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
u16 cap);
u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
const struct cfg80211_chan_def *chandef,
u16 prot_mode);
u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
u32 cap);
int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef,
const struct ieee80211_supported_band *sband,
const u8 *srates, int srates_len, u32 *rates);
int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata,
struct sk_buff *skb, bool need_basic,
enum ieee80211_band band);
int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata,
struct sk_buff *skb, bool need_basic,
enum ieee80211_band band);
/* channel management */
void ieee80211_ht_oper_to_chandef(struct ieee80211_channel *control_chan,
const struct ieee80211_ht_operation *ht_oper,
struct cfg80211_chan_def *chandef);
u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c);
int __must_check
ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata,
const struct cfg80211_chan_def *chandef,
enum ieee80211_chanctx_mode mode);
int __must_check
ieee80211_vif_change_bandwidth(struct ieee80211_sub_if_data *sdata,
const struct cfg80211_chan_def *chandef,
u32 *changed);
/* NOTE: only use ieee80211_vif_change_channel() for channel switch */
int __must_check
ieee80211_vif_change_channel(struct ieee80211_sub_if_data *sdata,
u32 *changed);
void ieee80211_vif_release_channel(struct ieee80211_sub_if_data *sdata);
void ieee80211_vif_vlan_copy_chanctx(struct ieee80211_sub_if_data *sdata);
void ieee80211_vif_copy_chanctx_to_vlans(struct ieee80211_sub_if_data *sdata,
bool clear);
void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local,
struct ieee80211_chanctx *chanctx);
void ieee80211_recalc_radar_chanctx(struct ieee80211_local *local,
struct ieee80211_chanctx *chanctx);
void ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local,
struct ieee80211_chanctx *ctx);
void ieee80211_dfs_cac_timer(unsigned long data);
void ieee80211_dfs_cac_timer_work(struct work_struct *work);
void ieee80211_dfs_cac_cancel(struct ieee80211_local *local);
void ieee80211_dfs_radar_detected_work(struct work_struct *work);
int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata,
struct cfg80211_csa_settings *csa_settings);
bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs);
bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n);
const struct ieee80211_cipher_scheme *
ieee80211_cs_get(struct ieee80211_local *local, u32 cipher,
enum nl80211_iftype iftype);
int ieee80211_cs_headroom(struct ieee80211_local *local,
struct cfg80211_crypto_settings *crypto,
enum nl80211_iftype iftype);
#ifdef CONFIG_MAC80211_NOINLINE
#define debug_noinline noinline
#else
#define debug_noinline
#endif
#endif /* IEEE80211_I_H */
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