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linux/net/mac80211/ieee80211_i.h
Johannes Berg 3d90110292 wifi: mac80211: implement link switching 
Implement an API function and debugfs file to switch
active links.

Also provide an async version of the API so drivers
can call it in arbitrary contexts, e.g. while in the
authorized callback.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-09-06 10:17:20 +02:00

2544 lines
80 KiB
C
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/* SPDX-License-Identifier: GPL-2.0-only */
/*
* 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>
* Copyright 2013-2015 Intel Mobile Communications GmbH
* Copyright (C) 2018-2022 Intel Corporation
*/
#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 <linux/rhashtable.h>
#include <linux/rbtree.h>
#include <net/ieee80211_radiotap.h>
#include <net/cfg80211.h>
#include <net/mac80211.h>
#include <net/fq.h>
#include "key.h"
#include "sta_info.h"
#include "debug.h"
extern const struct cfg80211_ops mac80211_config_ops;
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
/* 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. Decreasing the
* probability of that happening by using legacy mode for all ACs but VO isn't
* enough.
*
* Cisco 4410N originally forced us to enable VO by default only because it
* treated non-VO ACs as legacy.
*
* However some APs (notably Netgear R7000) silently reclassify packets to
* different ACs. Since u-APSD ACs require trigger frames for frame retrieval
* clients would never see some frames (e.g. ARP responses) or would fetch them
* accidentally after a long time.
*
* It makes little sense to enable u-APSD queues by default because it needs
* userspace applications to be aware of it to actually take advantage of the
* possible additional powersavings. Implicitly depending on driver autotrigger
* frame support doesn't make much sense.
*/
#define IEEE80211_DEFAULT_UAPSD_QUEUES 0
#define IEEE80211_DEFAULT_MAX_SP_LEN \
IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL
extern const u8 ieee80211_ac_to_qos_mask[IEEE80211_NUM_ACS];
#define IEEE80211_DEAUTH_FRAME_LEN (24 /* hdr */ + 2 /* reason */)
#define IEEE80211_MAX_NAN_INSTANCE_ID 255
/*
* Keep a station's queues on the active list for deficit accounting purposes
* if it was active or queued during the last 100ms
*/
#define AIRTIME_ACTIVE_DURATION (HZ / 10)
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;
u32 vht_cap_info;
/*
* 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 received 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_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_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 list_head *list;
struct sk_buff *skb;
struct ieee80211_local *local;
struct ieee80211_sub_if_data *sdata;
struct ieee80211_link_data *link;
struct sta_info *sta;
struct link_sta_info *link_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;
int link_id;
union {
struct {
u32 iv32;
u16 iv16;
} tkip;
struct {
u8 pn[IEEE80211_CCMP_PN_LEN];
} ccm_gcm;
};
};
struct ieee80211_csa_settings {
const u16 *counter_offsets_beacon;
const u16 *counter_offsets_presp;
int n_counter_offsets_beacon;
int n_counter_offsets_presp;
u8 count;
};
struct ieee80211_color_change_settings {
u16 counter_offset_beacon;
u16 counter_offset_presp;
u8 count;
};
struct beacon_data {
u8 *head, *tail;
int head_len, tail_len;
struct ieee80211_meshconf_ie *meshconf;
u16 cntdwn_counter_offsets[IEEE80211_MAX_CNTDWN_COUNTERS_NUM];
u8 cntdwn_current_counter;
struct cfg80211_mbssid_elems *mbssid_ies;
struct rcu_head rcu_head;
};
struct probe_resp {
struct rcu_head rcu_head;
int len;
u16 cntdwn_counter_offsets[IEEE80211_MAX_CNTDWN_COUNTERS_NUM];
u8 data[];
};
struct fils_discovery_data {
struct rcu_head rcu_head;
int len;
u8 data[];
};
struct unsol_bcast_probe_resp_data {
struct rcu_head rcu_head;
int len;
u8 data[];
};
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)]
__aligned(__alignof__(unsigned long));
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 list_head vlans; /* write-protected with RTNL and local->mtx */
struct ps_data ps;
atomic_t num_mcast_sta; /* number of stations receiving multicast */
bool multicast_to_unicast;
bool active;
};
struct ieee80211_if_vlan {
struct list_head list; /* write-protected with RTNL and local->mtx */
/* used for all tx if the VLAN is configured to 4-addr mode */
struct sta_info __rcu *sta;
atomic_t num_mcast_sta; /* number of stations receiving multicast */
};
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;
};
struct ieee80211_roc_work {
struct list_head list;
struct ieee80211_sub_if_data *sdata;
struct ieee80211_channel *chan;
bool started, abort, hw_begun, notified;
bool on_channel;
unsigned long 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_MFP_ENABLED = BIT(6),
IEEE80211_STA_UAPSD_ENABLED = BIT(7),
IEEE80211_STA_NULLFUNC_ACKED = BIT(8),
IEEE80211_STA_ENABLE_RRM = BIT(15),
};
typedef u32 __bitwise ieee80211_conn_flags_t;
enum ieee80211_conn_flags {
IEEE80211_CONN_DISABLE_HT = (__force ieee80211_conn_flags_t)BIT(0),
IEEE80211_CONN_DISABLE_40MHZ = (__force ieee80211_conn_flags_t)BIT(1),
IEEE80211_CONN_DISABLE_VHT = (__force ieee80211_conn_flags_t)BIT(2),
IEEE80211_CONN_DISABLE_80P80MHZ = (__force ieee80211_conn_flags_t)BIT(3),
IEEE80211_CONN_DISABLE_160MHZ = (__force ieee80211_conn_flags_t)BIT(4),
IEEE80211_CONN_DISABLE_HE = (__force ieee80211_conn_flags_t)BIT(5),
IEEE80211_CONN_DISABLE_EHT = (__force ieee80211_conn_flags_t)BIT(6),
IEEE80211_CONN_DISABLE_320MHZ = (__force ieee80211_conn_flags_t)BIT(7),
};
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, waiting;
bool peer_confirmed;
bool timeout_started;
u8 ap_addr[ETH_ALEN] __aligned(2);
u16 sae_trans, sae_status;
size_t data_len;
u8 data[];
};
struct ieee80211_mgd_assoc_data {
struct {
struct cfg80211_bss *bss;
u8 addr[ETH_ALEN] __aligned(2);
u8 ap_ht_param;
struct ieee80211_vht_cap ap_vht_cap;
size_t elems_len;
u8 *elems; /* pointing to inside ie[] below */
ieee80211_conn_flags_t conn_flags;
} link[IEEE80211_MLD_MAX_NUM_LINKS];
u8 ap_addr[ETH_ALEN] __aligned(2);
/* this is for a workaround, so we use it only for non-MLO */
const u8 *supp_rates;
u8 supp_rates_len;
unsigned long timeout;
int tries;
u8 prev_ap_addr[ETH_ALEN];
u8 ssid[IEEE80211_MAX_SSID_LEN];
u8 ssid_len;
bool wmm, uapsd;
bool need_beacon;
bool synced;
bool timeout_started;
bool s1g;
unsigned int assoc_link_id;
u8 fils_nonces[2 * FILS_NONCE_LEN];
u8 fils_kek[FILS_MAX_KEK_LEN];
size_t fils_kek_len;
size_t ie_len;
u8 *ie_pos; /* used to fill ie[] with link[].elems */
u8 ie[];
};
struct ieee80211_sta_tx_tspec {
/* timestamp of the first packet in the time slice */
unsigned long time_slice_start;
u32 admitted_time; /* in usecs, unlike over the air */
u8 tsid;
s8 up; /* signed to be able to invalidate with -1 during teardown */
/* consumed TX time in microseconds in the time slice */
u32 consumed_tx_time;
enum {
TX_TSPEC_ACTION_NONE = 0,
TX_TSPEC_ACTION_DOWNGRADE,
TX_TSPEC_ACTION_STOP_DOWNGRADE,
} action;
bool downgraded;
};
DECLARE_EWMA(beacon_signal, 4, 4)
struct ieee80211_if_managed {
struct timer_list timer;
struct timer_list conn_mon_timer;
struct timer_list bcn_mon_timer;
struct work_struct monitor_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;
u8 connection_loss:1,
driver_disconnect:1,
reconnect:1,
associated:1;
struct ieee80211_mgd_auth_data *auth_data;
struct ieee80211_mgd_assoc_data *assoc_data;
bool powersave; /* powersave requested for this iface */
bool broken_ap; /* AP is broken -- turn off powersave */
unsigned int flags;
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;
u8 use_4addr;
/*
* 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;
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_s1g_cap s1g_capa; /* configured S1G overrides */
struct ieee80211_s1g_cap s1g_capa_mask; /* valid s1g_capa bits */
/* TDLS support */
u8 tdls_peer[ETH_ALEN] __aligned(2);
struct delayed_work tdls_peer_del_work;
struct sk_buff *orig_teardown_skb; /* The original teardown skb */
struct sk_buff *teardown_skb; /* A copy to send through the AP */
spinlock_t teardown_lock; /* To lock changing teardown_skb */
bool tdls_wider_bw_prohibited;
/* WMM-AC TSPEC support */
struct ieee80211_sta_tx_tspec tx_tspec[IEEE80211_NUM_ACS];
/* Use a separate work struct so that we can do something here
* while the sdata->work is flushing the queues, for example.
* otherwise, in scenarios where we hardly get any traffic out
* on the BE queue, but there's a lot of VO traffic, we might
* get stuck in a downgraded situation and flush takes forever.
*/
struct delayed_work tx_tspec_wk;
/* Information elements from the last transmitted (Re)Association
* Request frame.
*/
u8 *assoc_req_ies;
size_t assoc_req_ies_len;
};
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_if_ocb - OCB mode state
*
* @housekeeping_timer: timer for periodic invocation of a housekeeping task
* @wrkq_flags: OCB deferred task action
* @incomplete_lock: delayed STA insertion lock
* @incomplete_stations: list of STAs waiting for delayed insertion
* @joined: indication if the interface is connected to an OCB network
*/
struct ieee80211_if_ocb {
struct timer_list housekeeping_timer;
unsigned long wrkq_flags;
spinlock_t incomplete_lock;
struct list_head incomplete_stations;
bool joined;
};
/**
* 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, unsigned int len,
const struct ieee80211_meshconf_ie *mesh_cfg,
struct ieee80211_rx_status *rx_status);
/* should be called with beacon_data under RCU read lock */
void (*adjust_tsf)(struct ieee80211_sub_if_data *sdata,
struct beacon_data *beacon);
/* add other framework functions here */
};
struct mesh_csa_settings {
struct rcu_head rcu_head;
struct cfg80211_csa_settings settings;
};
/**
* struct mesh_table
*
* @known_gates: list of known mesh gates and their mpaths by the station. The
* gate's mpath may or may not be resolved and active.
* @gates_lock: protects updates to known_gates
* @rhead: the rhashtable containing struct mesh_paths, keyed by dest addr
* @walk_head: linked list containing all mesh_path objects
* @walk_lock: lock protecting walk_head
* @entries: number of entries in the table
*/
struct mesh_table {
struct hlist_head known_gates;
spinlock_t gates_lock;
struct rhashtable rhead;
struct hlist_head walk_head;
spinlock_t walk_lock;
atomic_t entries; /* Up to MAX_MESH_NEIGHBOURS */
};
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;
bool userspace_handles_dfs;
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;
/* 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;
enum {
IEEE80211_MESH_CSA_ROLE_NONE,
IEEE80211_MESH_CSA_ROLE_INIT,
IEEE80211_MESH_CSA_ROLE_REPEATER,
} csa_role;
u8 chsw_ttl;
u16 pre_value;
/* offset from skb->data while building IE */
int meshconf_offset;
struct mesh_table mesh_paths;
struct mesh_table mpp_paths; /* Store paths for MPP&MAP */
int mesh_paths_generation;
int mpp_paths_generation;
};
#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_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
* @IEEE80211_SDATA_DISCONNECT_HW_RESTART: Disconnect after hardware restart
* recovery
*/
enum ieee80211_sub_if_data_flags {
IEEE80211_SDATA_ALLMULTI = BIT(0),
IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3),
IEEE80211_SDATA_DISCONNECT_RESUME = BIT(4),
IEEE80211_SDATA_IN_DRIVER = BIT(5),
IEEE80211_SDATA_DISCONNECT_HW_RESTART = BIT(6),
};
/**
* 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
};
/**
* enum ieee80211_chanctx_replace_state - channel context replacement state
*
* This is used for channel context in-place reservations that require channel
* context switch/swap.
*
* @IEEE80211_CHANCTX_REPLACE_NONE: no replacement is taking place
* @IEEE80211_CHANCTX_WILL_BE_REPLACED: this channel context will be replaced
* by a (not yet registered) channel context pointed by %replace_ctx.
* @IEEE80211_CHANCTX_REPLACES_OTHER: this (not yet registered) channel context
* replaces an existing channel context pointed to by %replace_ctx.
*/
enum ieee80211_chanctx_replace_state {
IEEE80211_CHANCTX_REPLACE_NONE,
IEEE80211_CHANCTX_WILL_BE_REPLACED,
IEEE80211_CHANCTX_REPLACES_OTHER,
};
struct ieee80211_chanctx {
struct list_head list;
struct rcu_head rcu_head;
struct list_head assigned_links;
struct list_head reserved_links;
enum ieee80211_chanctx_replace_state replace_state;
struct ieee80211_chanctx *replace_ctx;
enum ieee80211_chanctx_mode mode;
bool driver_present;
struct ieee80211_chanctx_conf conf;
};
struct mac80211_qos_map {
struct cfg80211_qos_map qos_map;
struct rcu_head rcu_head;
};
enum txq_info_flags {
IEEE80211_TXQ_STOP,
IEEE80211_TXQ_AMPDU,
IEEE80211_TXQ_NO_AMSDU,
IEEE80211_TXQ_STOP_NETIF_TX,
};
/**
* struct txq_info - per tid queue
*
* @tin: contains packets split into multiple flows
* @def_flow: used as a fallback flow when a packet destined to @tin hashes to
* a fq_flow which is already owned by a different tin
* @def_cvars: codel vars for @def_flow
* @frags: used to keep fragments created after dequeue
* @schedule_order: used with ieee80211_local->active_txqs
* @schedule_round: counter to prevent infinite loops on TXQ scheduling
*/
struct txq_info {
struct fq_tin tin;
struct codel_vars def_cvars;
struct codel_stats cstats;
u16 schedule_round;
struct list_head schedule_order;
struct sk_buff_head frags;
unsigned long flags;
/* keep last! */
struct ieee80211_txq txq;
};
struct ieee80211_if_mntr {
u32 flags;
u8 mu_follow_addr[ETH_ALEN] __aligned(2);
struct list_head list;
};
/**
* struct ieee80211_if_nan - NAN state
*
* @conf: current NAN configuration
* @func_ids: a bitmap of available instance_id's
*/
struct ieee80211_if_nan {
struct cfg80211_nan_conf conf;
/* protects function_inst_ids */
spinlock_t func_lock;
struct idr function_inst_ids;
};
struct ieee80211_link_data_managed {
u8 bssid[ETH_ALEN] __aligned(2);
u8 dtim_period;
enum ieee80211_smps_mode req_smps, /* requested smps mode */
driver_smps_mode; /* smps mode request */
ieee80211_conn_flags_t conn_flags;
s16 p2p_noa_index;
bool tdls_chan_switch_prohibited;
bool have_beacon;
bool tracking_signal_avg;
bool disable_wmm_tracking;
bool operating_11g_mode;
bool csa_waiting_bcn;
bool csa_ignored_same_chan;
struct timer_list chswitch_timer;
struct work_struct chswitch_work;
struct work_struct request_smps_work;
bool beacon_crc_valid;
u32 beacon_crc;
struct ewma_beacon_signal ave_beacon_signal;
int last_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;
/* Number of times beacon loss was invoked. */
unsigned int beacon_loss_count;
/*
* 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;
int wmm_last_param_set;
int mu_edca_last_param_set;
struct cfg80211_bss *bss;
};
struct ieee80211_link_data_ap {
struct beacon_data __rcu *beacon;
struct probe_resp __rcu *probe_resp;
struct fils_discovery_data __rcu *fils_discovery;
struct unsol_bcast_probe_resp_data __rcu *unsol_bcast_probe_resp;
/* to be used after channel switch. */
struct cfg80211_beacon_data *next_beacon;
};
struct ieee80211_link_data {
struct ieee80211_sub_if_data *sdata;
unsigned int link_id;
struct list_head assigned_chanctx_list; /* protected by chanctx_mtx */
struct list_head reserved_chanctx_list; /* protected by chanctx_mtx */
/* multicast keys only */
struct ieee80211_key __rcu *gtk[NUM_DEFAULT_KEYS +
NUM_DEFAULT_MGMT_KEYS +
NUM_DEFAULT_BEACON_KEYS];
struct ieee80211_key __rcu *default_multicast_key;
struct ieee80211_key __rcu *default_mgmt_key;
struct ieee80211_key __rcu *default_beacon_key;
struct work_struct csa_finalize_work;
bool csa_block_tx; /* write-protected by sdata_lock and local->mtx */
bool operating_11g_mode;
struct cfg80211_chan_def csa_chandef;
struct work_struct color_change_finalize_work;
/* context reservation -- protected with chanctx_mtx */
struct ieee80211_chanctx *reserved_chanctx;
struct cfg80211_chan_def reserved_chandef;
bool reserved_radar_required;
bool reserved_ready;
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;
union {
struct ieee80211_link_data_managed mgd;
struct ieee80211_link_data_ap ap;
} u;
struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS];
struct ieee80211_bss_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;
char name[IFNAMSIZ];
struct ieee80211_fragment_cache frags;
/* 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];
struct ieee80211_key __rcu *default_unicast_key;
u16 sequence_number;
u16 mld_mcast_seq;
__be16 control_port_protocol;
bool control_port_no_encrypt;
bool control_port_no_preauth;
bool control_port_over_nl80211;
atomic_t num_tx_queued;
struct mac80211_qos_map __rcu *qos_map;
/* used to reconfigure hardware SM PS */
struct work_struct recalc_smps;
struct work_struct work;
struct sk_buff_head skb_queue;
struct sk_buff_head status_queue;
/*
* 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[NUM_NL80211_BANDS];
bool rc_has_mcs_mask[NUM_NL80211_BANDS];
u8 rc_rateidx_mcs_mask[NUM_NL80211_BANDS][IEEE80211_HT_MCS_MASK_LEN];
bool rc_has_vht_mcs_mask[NUM_NL80211_BANDS];
u16 rc_rateidx_vht_mcs_mask[NUM_NL80211_BANDS][NL80211_VHT_NSS_MAX];
/* Beacon frame (non-MCS) rate (as a bitmap) */
u32 beacon_rateidx_mask[NUM_NL80211_BANDS];
bool beacon_rate_set;
union {
struct ieee80211_if_ap ap;
struct ieee80211_if_vlan vlan;
struct ieee80211_if_managed mgd;
struct ieee80211_if_ibss ibss;
struct ieee80211_if_mesh mesh;
struct ieee80211_if_ocb ocb;
struct ieee80211_if_mntr mntr;
struct ieee80211_if_nan nan;
} u;
struct ieee80211_link_data deflink;
struct ieee80211_link_data __rcu *link[IEEE80211_MLD_MAX_NUM_LINKS];
/* for ieee80211_set_active_links_async() */
struct work_struct activate_links_work;
u16 desired_active_links;
#ifdef CONFIG_MAC80211_DEBUGFS
struct {
struct dentry *subdir_stations;
struct dentry *default_unicast_key;
struct dentry *default_multicast_key;
struct dentry *default_mgmt_key;
struct dentry *default_beacon_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 int
ieee80211_chanwidth_get_shift(enum nl80211_chan_width width)
{
switch (width) {
case NL80211_CHAN_WIDTH_5:
return 2;
case NL80211_CHAN_WIDTH_10:
return 1;
default:
return 0;
}
}
static inline int
ieee80211_chandef_get_shift(struct cfg80211_chan_def *chandef)
{
return ieee80211_chanwidth_get_shift(chandef->width);
}
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->bss_conf.chanctx_conf);
if (chanctx_conf)
shift = ieee80211_chandef_get_shift(&chanctx_conf->def);
rcu_read_unlock();
return shift;
}
static inline int
ieee80211_get_mbssid_beacon_len(struct cfg80211_mbssid_elems *elems)
{
int i, len = 0;
if (!elems)
return 0;
for (i = 0; i < elems->cnt; i++)
len += elems->elem[i].len;
return len;
}
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,
IEEE80211_QUEUE_STOP_REASON_TDLS_TEARDOWN,
IEEE80211_QUEUE_STOP_REASON_RESERVE_TID,
IEEE80211_QUEUE_STOP_REASON_IFTYPE_CHANGE,
IEEE80211_QUEUE_STOP_REASONS,
};
#ifdef CONFIG_MAC80211_LEDS
struct tpt_led_trigger {
char name[32];
const struct ieee80211_tpt_blink *blink_table;
unsigned int blink_table_len;
struct timer_list timer;
struct ieee80211_local *local;
unsigned long prev_traffic;
unsigned long tx_bytes, rx_bytes;
unsigned int active, want;
bool running;
};
#endif
/**
* 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.
* @SCAN_BEACON_WAIT: Set whenever we're passive scanning because of radar/no-IR
* and could send a probe request after receiving a beacon.
* @SCAN_BEACON_DONE: Beacon received, we can now send a probe request
*/
enum {
SCAN_SW_SCANNING,
SCAN_HW_SCANNING,
SCAN_ONCHANNEL_SCANNING,
SCAN_COMPLETED,
SCAN_ABORTED,
SCAN_HW_CANCELLED,
SCAN_BEACON_WAIT,
SCAN_BEACON_DONE,
};
/**
* 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,
};
DECLARE_STATIC_KEY_FALSE(aql_disable);
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;
struct fq fq;
struct codel_vars *cvars;
struct codel_params cparams;
/* protects active_txqs and txqi->schedule_order */
spinlock_t active_txq_lock[IEEE80211_NUM_ACS];
struct list_head active_txqs[IEEE80211_NUM_ACS];
u16 schedule_round[IEEE80211_NUM_ACS];
u16 airtime_flags;
u32 aql_txq_limit_low[IEEE80211_NUM_ACS];
u32 aql_txq_limit_high[IEEE80211_NUM_ACS];
u32 aql_threshold;
atomic_t aql_total_pending_airtime;
atomic_t aql_ac_pending_airtime[IEEE80211_NUM_ACS];
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];
int q_stop_reasons[IEEE80211_MAX_QUEUES][IEEE80211_QUEUE_STOP_REASONS];
/* 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;
bool probe_req_reg;
bool rx_mcast_action_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;
/* suspending is true during the whole suspend process */
bool suspending;
/*
* 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;
struct work_struct radar_detected_work;
/* number of RX chains the hardware has */
u8 rx_chains;
/* bitmap of which sbands were copied */
u8 sband_allocated;
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 rhltable sta_hash;
struct rhltable link_sta_hash;
struct timer_list sta_cleanup;
int sta_generation;
struct sk_buff_head pending[IEEE80211_MAX_QUEUES];
struct tasklet_struct tx_pending_tasklet;
struct tasklet_struct wake_txqs_tasklet;
atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES];
/* number of interfaces with allmulti RX */
atomic_t iff_allmultis;
struct rate_control_ref *rate_ctrl;
struct arc4_ctx wep_tx_ctx;
struct arc4_ctx wep_rx_ctx;
u32 wep_iv;
/* see iface.c */
struct list_head interfaces;
struct list_head mon_list; /* only that are IFF_UP && !cooked */
struct mutex iflist_mtx;
/*
* Key mutex, protects sdata's key_list and sta_info's
* key pointers and ptk_idx (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 __rcu *scan_req;
struct ieee80211_scan_request *hw_scan_req;
struct cfg80211_chan_def scan_chandef;
enum nl80211_band hw_scan_band;
int scan_channel_idx;
int scan_ies_len;
int hw_scan_ies_bufsize;
struct cfg80211_scan_info scan_info;
struct work_struct sched_scan_stopped_work;
struct ieee80211_sub_if_data __rcu *sched_scan_sdata;
struct cfg80211_sched_scan_request __rcu *sched_scan_req;
u8 scan_addr[ETH_ALEN];
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;
#ifdef CONFIG_MAC80211_LEDS
struct led_trigger tx_led, rx_led, assoc_led, radio_led;
struct led_trigger tpt_led;
atomic_t tx_led_active, rx_led_active, assoc_led_active;
atomic_t radio_led_active, tpt_led_active;
struct tpt_led_trigger *tpt_led_trigger;
#endif
#ifdef CONFIG_MAC80211_DEBUG_COUNTERS
/* SNMP counters */
/* dot11CountersTable */
u32 dot11TransmittedFragmentCount;
u32 dot11MulticastTransmittedFrameCount;
u32 dot11FailedCount;
u32 dot11RetryCount;
u32 dot11MultipleRetryCount;
u32 dot11FrameDuplicateCount;
u32 dot11ReceivedFragmentCount;
u32 dot11MulticastReceivedFrameCount;
u32 dot11TransmittedFrameCount;
/* TX/RX handler statistics */
unsigned int tx_handlers_drop;
unsigned int tx_handlers_queued;
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 tx_expand_skb_head;
unsigned int tx_expand_skb_head_cloned;
unsigned int rx_expand_skb_head_defrag;
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;
/*
* 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 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;
bool force_tx_status;
#endif
/*
* Remain-on-channel support
*/
struct delayed_work roc_work;
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;
/* extended capabilities provided by mac80211 */
u8 ext_capa[8];
};
static inline struct ieee80211_sub_if_data *
IEEE80211_DEV_TO_SUB_IF(const 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);
}
static inline struct ieee80211_supported_band *
ieee80211_get_sband(struct ieee80211_sub_if_data *sdata)
{
struct ieee80211_local *local = sdata->local;
struct ieee80211_chanctx_conf *chanctx_conf;
enum nl80211_band band;
WARN_ON(sdata->vif.valid_links);
rcu_read_lock();
chanctx_conf = rcu_dereference(sdata->vif.bss_conf.chanctx_conf);
if (!chanctx_conf) {
rcu_read_unlock();
return NULL;
}
band = chanctx_conf->def.chan->band;
rcu_read_unlock();
return local->hw.wiphy->bands[band];
}
static inline struct ieee80211_supported_band *
ieee80211_get_link_sband(struct ieee80211_link_data *link)
{
struct ieee80211_local *local = link->sdata->local;
struct ieee80211_chanctx_conf *chanctx_conf;
enum nl80211_band band;
rcu_read_lock();
chanctx_conf = rcu_dereference(link->conf->chanctx_conf);
if (!chanctx_conf) {
rcu_read_unlock();
return NULL;
}
band = chanctx_conf->def.chan->band;
rcu_read_unlock();
return local->hw.wiphy->bands[band];
}
/* 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;
u16 reason_code;
u32 max_switch_time;
};
/* Parsed Information Elements */
struct ieee802_11_elems {
const u8 *ie_start;
size_t total_len;
u32 crc;
/* pointers to IEs */
const struct ieee80211_tdls_lnkie *lnk_id;
const struct ieee80211_ch_switch_timing *ch_sw_timing;
const u8 *ext_capab;
const u8 *ssid;
const u8 *supp_rates;
const u8 *ds_params;
const struct ieee80211_tim_ie *tim;
const u8 *rsn;
const u8 *rsnx;
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 *he_cap;
const struct ieee80211_he_operation *he_operation;
const struct ieee80211_he_spr *he_spr;
const struct ieee80211_mu_edca_param_set *mu_edca_param_set;
const struct ieee80211_he_6ghz_capa *he_6ghz_capa;
const struct ieee80211_tx_pwr_env *tx_pwr_env[IEEE80211_TPE_MAX_IE_COUNT];
const u8 *uora_element;
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 *max_channel_switch_time;
const u8 *country_elem;
const u8 *pwr_constr_elem;
const u8 *cisco_dtpc_elem;
const struct ieee80211_timeout_interval_ie *timeout_int;
const u8 *opmode_notif;
const struct ieee80211_sec_chan_offs_ie *sec_chan_offs;
struct ieee80211_mesh_chansw_params_ie *mesh_chansw_params_ie;
const struct ieee80211_bss_max_idle_period_ie *max_idle_period_ie;
const struct ieee80211_multiple_bssid_configuration *mbssid_config_ie;
const struct ieee80211_bssid_index *bssid_index;
u8 max_bssid_indicator;
u8 dtim_count;
u8 dtim_period;
const struct ieee80211_addba_ext_ie *addba_ext_ie;
const struct ieee80211_s1g_cap *s1g_capab;
const struct ieee80211_s1g_oper_ie *s1g_oper;
const struct ieee80211_s1g_bcn_compat_ie *s1g_bcn_compat;
const struct ieee80211_aid_response_ie *aid_resp;
const struct ieee80211_eht_cap_elem *eht_cap;
const struct ieee80211_eht_operation *eht_operation;
const struct ieee80211_multi_link_elem *multi_link;
/* length of them, respectively */
u8 ext_capab_len;
u8 ssid_len;
u8 supp_rates_len;
u8 tim_len;
u8 rsn_len;
u8 rsnx_len;
u8 ext_supp_rates_len;
u8 wmm_info_len;
u8 wmm_param_len;
u8 he_cap_len;
u8 mesh_id_len;
u8 peering_len;
u8 preq_len;
u8 prep_len;
u8 perr_len;
u8 country_elem_len;
u8 bssid_index_len;
u8 tx_pwr_env_len[IEEE80211_TPE_MAX_IE_COUNT];
u8 tx_pwr_env_num;
u8 eht_cap_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 struct txq_info *to_txq_info(struct ieee80211_txq *txq)
{
return container_of(txq, struct txq_info, txq);
}
static inline bool txq_has_queue(struct ieee80211_txq *txq)
{
struct txq_info *txqi = to_txq_info(txq);
return !(skb_queue_empty(&txqi->frags) && !txqi->tin.backlog_packets);
}
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 |
RX_FLAG_MACTIME_PLCP_START));
}
void ieee80211_vif_inc_num_mcast(struct ieee80211_sub_if_data *sdata);
void ieee80211_vif_dec_num_mcast(struct ieee80211_sub_if_data *sdata);
/* This function returns the number of multicast stations connected to this
* interface. It returns -1 if that number is not tracked, that is for netdevs
* not in AP or AP_VLAN mode or when using 4addr.
*/
static inline int
ieee80211_vif_get_num_mcast_if(struct ieee80211_sub_if_data *sdata)
{
if (sdata->vif.type == NL80211_IFTYPE_AP)
return atomic_read(&sdata->u.ap.num_mcast_sta);
if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN && !sdata->u.vlan.sta)
return atomic_read(&sdata->u.vlan.num_mcast_sta);
return -1;
}
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,
u64 changed);
void ieee80211_vif_cfg_change_notify(struct ieee80211_sub_if_data *sdata,
u64 changed);
void ieee80211_link_info_change_notify(struct ieee80211_sub_if_data *sdata,
struct ieee80211_link_data *link,
u64 changed);
void ieee80211_configure_filter(struct ieee80211_local *local);
u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local);
int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb,
u64 *cookie, gfp_t gfp);
void ieee80211_check_fast_rx(struct sta_info *sta);
void __ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata);
void ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata);
void ieee80211_clear_fast_rx(struct sta_info *sta);
bool ieee80211_is_our_addr(struct ieee80211_sub_if_data *sdata,
const u8 *addr, int *out_link_id);
/* 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);
void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata);
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_rx_queued_ext(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_mgd_quiesce(struct ieee80211_sub_if_data *sdata);
void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata);
void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata);
void ieee80211_sta_connection_lost(struct ieee80211_sub_if_data *sdata,
u8 reason, bool tx);
void ieee80211_mgd_setup_link(struct ieee80211_link_data *link);
void ieee80211_mgd_stop_link(struct ieee80211_link_data *link);
void ieee80211_mgd_set_link_qos_params(struct ieee80211_link_data *link);
/* 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);
/* OCB code */
void ieee80211_ocb_work(struct ieee80211_sub_if_data *sdata);
void ieee80211_ocb_rx_no_sta(struct ieee80211_sub_if_data *sdata,
const u8 *bssid, const u8 *addr, u32 supp_rates);
void ieee80211_ocb_setup_sdata(struct ieee80211_sub_if_data *sdata);
int ieee80211_ocb_join(struct ieee80211_sub_if_data *sdata,
struct ocb_setup *setup);
int ieee80211_ocb_leave(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);
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 **channels,
unsigned int n_channels,
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 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_start(struct ieee80211_sub_if_data *sdata,
struct cfg80211_sched_scan_request *req);
int ieee80211_request_sched_scan_stop(struct ieee80211_local *local);
void ieee80211_sched_scan_end(struct ieee80211_local *local);
void ieee80211_sched_scan_stopped_work(struct work_struct *work);
/* off-channel/mgmt-tx */
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);
int ieee80211_remain_on_channel(struct wiphy *wiphy, struct wireless_dev *wdev,
struct ieee80211_channel *chan,
unsigned int duration, u64 *cookie);
int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
struct wireless_dev *wdev, u64 cookie);
int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
struct cfg80211_mgmt_tx_params *params, u64 *cookie);
int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
struct wireless_dev *wdev, u64 cookie);
/* channel switch handling */
void ieee80211_csa_finalize_work(struct work_struct *work);
int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
struct cfg80211_csa_settings *params);
/* color change handling */
void ieee80211_color_change_finalize_work(struct work_struct *work);
/* interface handling */
#define MAC80211_SUPPORTED_FEATURES_TX (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | \
NETIF_F_HW_CSUM | NETIF_F_SG | \
NETIF_F_HIGHDMA | NETIF_F_GSO_SOFTWARE)
#define MAC80211_SUPPORTED_FEATURES_RX (NETIF_F_RXCSUM)
#define MAC80211_SUPPORTED_FEATURES (MAC80211_SUPPORTED_FEATURES_TX | \
MAC80211_SUPPORTED_FEATURES_RX)
int ieee80211_iface_init(void);
void ieee80211_iface_exit(void);
int ieee80211_if_add(struct ieee80211_local *local, const char *name,
unsigned char name_assign_type,
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,
bool update_bss);
void ieee80211_recalc_offload(struct ieee80211_local *local);
static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata)
{
return test_bit(SDATA_STATE_RUNNING, &sdata->state);
}
/* link handling */
void ieee80211_link_setup(struct ieee80211_link_data *link);
void ieee80211_link_init(struct ieee80211_sub_if_data *sdata,
int link_id,
struct ieee80211_link_data *link,
struct ieee80211_bss_conf *link_conf);
void ieee80211_link_stop(struct ieee80211_link_data *link);
int ieee80211_vif_set_links(struct ieee80211_sub_if_data *sdata,
u16 new_links);
void ieee80211_vif_clear_links(struct ieee80211_sub_if_data *sdata);
/* tx handling */
void ieee80211_clear_tx_pending(struct ieee80211_local *local);
void ieee80211_tx_pending(struct tasklet_struct *t);
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);
netdev_tx_t ieee80211_subif_start_xmit_8023(struct sk_buff *skb,
struct net_device *dev);
void __ieee80211_subif_start_xmit(struct sk_buff *skb,
struct net_device *dev,
u32 info_flags,
u32 ctrl_flags,
u64 *cookie);
void ieee80211_purge_tx_queue(struct ieee80211_hw *hw,
struct sk_buff_head *skbs);
struct sk_buff *
ieee80211_build_data_template(struct ieee80211_sub_if_data *sdata,
struct sk_buff *skb, u32 info_flags);
void ieee80211_tx_monitor(struct ieee80211_local *local, struct sk_buff *skb,
int retry_count, int shift, bool send_to_cooked,
struct ieee80211_tx_status *status);
void ieee80211_check_fast_xmit(struct sta_info *sta);
void ieee80211_check_fast_xmit_all(struct ieee80211_local *local);
void ieee80211_check_fast_xmit_iface(struct ieee80211_sub_if_data *sdata);
void ieee80211_clear_fast_xmit(struct sta_info *sta);
int ieee80211_tx_control_port(struct wiphy *wiphy, struct net_device *dev,
const u8 *buf, size_t len,
const u8 *dest, __be16 proto, bool unencrypted,
int link_id, u64 *cookie);
int ieee80211_probe_mesh_link(struct wiphy *wiphy, struct net_device *dev,
const u8 *buf, size_t len);
/* 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 link_sta_info *link_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);
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_start_rx_ba_session(struct sta_info *sta,
u8 dialog_token, u16 timeout,
u16 start_seq_num, u16 ba_policy, u16 tid,
u16 buf_size, bool tx, bool auto_seq,
const struct ieee80211_addba_ext_ie *addbaext);
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 sta_info *sta, int tid,
struct tid_ampdu_tx *tid_tx);
void ieee80211_stop_tx_ba_cb(struct sta_info *sta, int tid,
struct tid_ampdu_tx *tid_tx);
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);
enum nl80211_smps_mode
ieee80211_smps_mode_to_smps_mode(enum ieee80211_smps_mode smps);
/* 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 link_sta_info *link_sta);
enum ieee80211_sta_rx_bandwidth
ieee80211_sta_cap_rx_bw(struct link_sta_info *link_sta);
enum ieee80211_sta_rx_bandwidth
ieee80211_sta_cur_vht_bw(struct link_sta_info *link_sta);
void ieee80211_sta_set_rx_nss(struct link_sta_info *link_sta);
enum ieee80211_sta_rx_bandwidth
ieee80211_chan_width_to_rx_bw(enum nl80211_chan_width width);
enum nl80211_chan_width
ieee80211_sta_cap_chan_bw(struct link_sta_info *link_sta);
void ieee80211_process_mu_groups(struct ieee80211_sub_if_data *sdata,
struct ieee80211_link_data *link,
struct ieee80211_mgmt *mgmt);
u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
struct link_sta_info *sta,
u8 opmode, enum nl80211_band band);
void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
struct link_sta_info *sta,
u8 opmode, enum nl80211_band band);
void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata,
struct ieee80211_sta_vht_cap *vht_cap);
void ieee80211_get_vht_mask_from_cap(__le16 vht_cap,
u16 vht_mask[NL80211_VHT_NSS_MAX]);
enum nl80211_chan_width
ieee80211_sta_rx_bw_to_chan_width(struct link_sta_info *sta);
/* HE */
void
ieee80211_he_cap_ie_to_sta_he_cap(struct ieee80211_sub_if_data *sdata,
struct ieee80211_supported_band *sband,
const u8 *he_cap_ie, u8 he_cap_len,
const struct ieee80211_he_6ghz_capa *he_6ghz_capa,
struct link_sta_info *link_sta);
void
ieee80211_he_spr_ie_to_bss_conf(struct ieee80211_vif *vif,
const struct ieee80211_he_spr *he_spr_ie_elem);
void
ieee80211_he_op_ie_to_bss_conf(struct ieee80211_vif *vif,
const struct ieee80211_he_operation *he_op_ie_elem);
/* S1G */
void ieee80211_s1g_sta_rate_init(struct sta_info *sta);
bool ieee80211_s1g_is_twt_setup(struct sk_buff *skb);
void ieee80211_s1g_rx_twt_action(struct ieee80211_sub_if_data *sdata,
struct sk_buff *skb);
void ieee80211_s1g_status_twt_action(struct ieee80211_sub_if_data *sdata,
struct sk_buff *skb);
/* 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
* @current_band: indicates the current band
* @vht_cap_info: VHT capabilities of the transmitter
* @conn_flags: contains information about own capabilities and restrictions
* to decide which channel switch announcements can be accepted, using
* flags from &enum ieee80211_conn_flags.
* @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,
enum nl80211_band current_band,
u32 vht_cap_info,
ieee80211_conn_flags_t conn_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) &&
!test_bit(SCAN_COMPLETED, &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 const void *const mac80211_wiphy_privid; /* for wiphy privid */
int ieee80211_frame_duration(enum nl80211_band band, size_t len,
int rate, int erp, int short_preamble,
int shift);
void ieee80211_regulatory_limit_wmm_params(struct ieee80211_sub_if_data *sdata,
struct ieee80211_tx_queue_params *qparam,
int ac);
void ieee80211_set_wmm_default(struct ieee80211_link_data *link,
bool bss_notify, bool enable_qos);
void ieee80211_xmit(struct ieee80211_sub_if_data *sdata,
struct sta_info *sta, struct sk_buff *skb);
void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
struct sk_buff *skb, int tid, int link_id,
enum nl80211_band band);
/* sta_out needs to be checked for ERR_PTR() before using */
int ieee80211_lookup_ra_sta(struct ieee80211_sub_if_data *sdata,
struct sk_buff *skb,
struct sta_info **sta_out);
static inline void
ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
struct sk_buff *skb, int tid,
enum nl80211_band band)
{
rcu_read_lock();
__ieee80211_tx_skb_tid_band(sdata, skb, tid, -1, band);
rcu_read_unlock();
}
void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata,
struct sk_buff *skb, int tid, int link_id);
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, -1);
}
/**
* struct ieee80211_elems_parse_params - element parsing parameters
* @start: pointer to the elements
* @len: length of the elements
* @action: %true if the elements came from an action frame
* @filter: bitmap of element IDs to filter out while calculating
* the element CRC
* @crc: CRC starting value
* @bss: the BSS to parse this as, for multi-BSSID cases this can
* represent a non-transmitting BSS in which case the data
* for that non-transmitting BSS is returned
* @link_id: the link ID to parse elements for, if a STA profile
* is present in the multi-link element, or -1 to ignore
* @from_ap: frame is received from an AP (currently used only
* for EHT capabilities parsing)
*/
struct ieee80211_elems_parse_params {
const u8 *start;
size_t len;
bool action;
u64 filter;
u32 crc;
struct cfg80211_bss *bss;
int link_id;
bool from_ap;
};
struct ieee802_11_elems *
ieee802_11_parse_elems_full(struct ieee80211_elems_parse_params *params);
static inline struct ieee802_11_elems *
ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
u64 filter, u32 crc,
struct cfg80211_bss *bss)
{
struct ieee80211_elems_parse_params params = {
.start = start,
.len = len,
.action = action,
.filter = filter,
.crc = crc,
.bss = bss,
.link_id = -1,
};
return ieee802_11_parse_elems_full(&params);
}
static inline struct ieee802_11_elems *
ieee802_11_parse_elems(const u8 *start, size_t len, bool action,
struct cfg80211_bss *bss)
{
return ieee802_11_parse_elems_crc(start, len, action, 0, 0, bss);
}
void ieee80211_fragment_element(struct sk_buff *skb, u8 *len_pos);
extern const int ieee802_1d_to_ac[8];
static inline int ieee80211_ac_from_tid(int tid)
{
return ieee802_1d_to_ac[tid & 7];
}
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(struct timer_list *t);
void ieee80211_send_nullfunc(struct ieee80211_local *local,
struct ieee80211_sub_if_data *sdata,
bool powersave);
void ieee80211_send_4addr_nullfunc(struct ieee80211_local *local,
struct ieee80211_sub_if_data *sdata);
void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
struct ieee80211_hdr *hdr, bool ack, u16 tx_time);
void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
unsigned long queues,
enum queue_stop_reason reason,
bool refcounted);
void ieee80211_stop_vif_queues(struct ieee80211_local *local,
struct ieee80211_sub_if_data *sdata,
enum queue_stop_reason reason);
void ieee80211_wake_vif_queues(struct ieee80211_local *local,
struct ieee80211_sub_if_data *sdata,
enum queue_stop_reason reason);
void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
unsigned long queues,
enum queue_stop_reason reason,
bool refcounted);
void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
enum queue_stop_reason reason,
bool refcounted);
void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
enum queue_stop_reason reason,
bool refcounted);
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(struct ieee80211_local *local,
struct sk_buff_head *skbs);
void ieee80211_flush_queues(struct ieee80211_local *local,
struct ieee80211_sub_if_data *sdata, bool drop);
void __ieee80211_flush_queues(struct ieee80211_local *local,
struct ieee80211_sub_if_data *sdata,
unsigned int queues, bool drop);
static inline bool ieee80211_can_run_worker(struct ieee80211_local *local)
{
/*
* It's unsafe to try to do any work during reconfigure flow.
* When the flow ends the work will be requeued.
*/
if (local->in_reconfig)
return false;
/*
* If quiescing is set, we are racing with __ieee80211_suspend.
* __ieee80211_suspend flushes the workers after setting quiescing,
* and we check quiescing / suspended before enqueing new workers.
* We should abort the worker to avoid the races below.
*/
if (local->quiescing)
return false;
/*
* We might already be suspended if the following scenario occurs:
* __ieee80211_suspend Control path
*
* if (local->quiescing)
* return;
* local->quiescing = true;
* flush_workqueue();
* queue_work(...);
* local->suspended = true;
* local->quiescing = false;
* worker starts running...
*/
if (local->suspended)
return false;
return true;
}
int ieee80211_txq_setup_flows(struct ieee80211_local *local);
void ieee80211_txq_set_params(struct ieee80211_local *local);
void ieee80211_txq_teardown_flows(struct ieee80211_local *local);
void ieee80211_txq_init(struct ieee80211_sub_if_data *sdata,
struct sta_info *sta,
struct txq_info *txq, int tid);
void ieee80211_txq_purge(struct ieee80211_local *local,
struct txq_info *txqi);
void ieee80211_txq_remove_vlan(struct ieee80211_local *local,
struct ieee80211_sub_if_data *sdata);
void ieee80211_fill_txq_stats(struct cfg80211_txq_stats *txqstats,
struct txq_info *txqi);
void ieee80211_wake_txqs(struct tasklet_struct *t);
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 *da, const u8 *bssid,
u16 stype, u16 reason,
bool send_frame, u8 *frame_buf);
enum {
IEEE80211_PROBE_FLAG_DIRECTED = BIT(0),
IEEE80211_PROBE_FLAG_MIN_CONTENT = BIT(1),
IEEE80211_PROBE_FLAG_RANDOM_SN = BIT(2),
};
int ieee80211_build_preq_ies(struct ieee80211_sub_if_data *sdata, u8 *buffer,
size_t buffer_len,
struct ieee80211_scan_ies *ie_desc,
const u8 *ie, size_t ie_len,
u8 bands_used, u32 *rate_masks,
struct cfg80211_chan_def *chandef,
u32 flags);
struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
const u8 *src, const u8 *dst,
u32 ratemask,
struct ieee80211_channel *chan,
const u8 *ssid, size_t ssid_len,
const u8 *ie, size_t ie_len,
u32 flags);
u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata,
struct ieee802_11_elems *elems,
enum nl80211_band band, u32 *basic_rates);
int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
struct ieee80211_link_data *link,
enum ieee80211_smps_mode smps_mode);
void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata,
struct ieee80211_link_data *link);
void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata,
int link_id);
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, bool rifs_mode);
void ieee80211_ie_build_wide_bw_cs(u8 *pos,
const struct cfg80211_chan_def *chandef);
u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
u32 cap);
u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
const struct cfg80211_chan_def *chandef);
u8 ieee80211_ie_len_he_cap(struct ieee80211_sub_if_data *sdata, u8 iftype);
u8 *ieee80211_ie_build_he_cap(ieee80211_conn_flags_t disable_flags, u8 *pos,
const struct ieee80211_sta_he_cap *he_cap,
u8 *end);
void ieee80211_ie_build_he_6ghz_cap(struct ieee80211_sub_if_data *sdata,
enum ieee80211_smps_mode smps_mode,
struct sk_buff *skb);
u8 *ieee80211_ie_build_he_oper(u8 *pos, struct cfg80211_chan_def *chandef);
int ieee80211_parse_bitrates(enum nl80211_chan_width width,
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 nl80211_band band);
int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata,
struct sk_buff *skb, bool need_basic,
enum nl80211_band band);
u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo);
void ieee80211_add_s1g_capab_ie(struct ieee80211_sub_if_data *sdata,
struct ieee80211_sta_s1g_cap *caps,
struct sk_buff *skb);
void ieee80211_add_aid_request_ie(struct ieee80211_sub_if_data *sdata,
struct sk_buff *skb);
/* channel management */
bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper,
struct cfg80211_chan_def *chandef);
bool ieee80211_chandef_vht_oper(struct ieee80211_hw *hw, u32 vht_cap_info,
const struct ieee80211_vht_operation *oper,
const struct ieee80211_ht_operation *htop,
struct cfg80211_chan_def *chandef);
void ieee80211_chandef_eht_oper(const struct ieee80211_eht_operation *eht_oper,
bool support_160, bool support_320,
struct cfg80211_chan_def *chandef);
bool ieee80211_chandef_he_6ghz_oper(struct ieee80211_sub_if_data *sdata,
const struct ieee80211_he_operation *he_oper,
const struct ieee80211_eht_operation *eht_oper,
struct cfg80211_chan_def *chandef);
bool ieee80211_chandef_s1g_oper(const struct ieee80211_s1g_oper_ie *oper,
struct cfg80211_chan_def *chandef);
ieee80211_conn_flags_t ieee80211_chandef_downgrade(struct cfg80211_chan_def *c);
int __must_check
ieee80211_link_use_channel(struct ieee80211_link_data *link,
const struct cfg80211_chan_def *chandef,
enum ieee80211_chanctx_mode mode);
int __must_check
ieee80211_link_reserve_chanctx(struct ieee80211_link_data *link,
const struct cfg80211_chan_def *chandef,
enum ieee80211_chanctx_mode mode,
bool radar_required);
int __must_check
ieee80211_link_use_reserved_context(struct ieee80211_link_data *link);
int ieee80211_link_unreserve_chanctx(struct ieee80211_link_data *link);
int __must_check
ieee80211_link_change_bandwidth(struct ieee80211_link_data *link,
const struct cfg80211_chan_def *chandef,
u32 *changed);
void ieee80211_link_release_channel(struct ieee80211_link_data *link);
void ieee80211_link_vlan_copy_chanctx(struct ieee80211_link_data *link);
void ieee80211_link_copy_chanctx_to_vlans(struct ieee80211_link_data *link,
bool clear);
int ieee80211_chanctx_refcount(struct ieee80211_local *local,
struct ieee80211_chanctx *ctx);
void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local,
struct ieee80211_chanctx *chanctx);
void ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local,
struct ieee80211_chanctx *ctx);
bool ieee80211_is_radar_required(struct ieee80211_local *local);
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);
void ieee80211_recalc_dtim(struct ieee80211_local *local,
struct ieee80211_sub_if_data *sdata);
int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata,
const struct cfg80211_chan_def *chandef,
enum ieee80211_chanctx_mode chanmode,
u8 radar_detect);
int ieee80211_max_num_channels(struct ieee80211_local *local);
void ieee80211_recalc_chanctx_chantype(struct ieee80211_local *local,
struct ieee80211_chanctx *ctx);
/* TDLS */
int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
const u8 *peer, u8 action_code, u8 dialog_token,
u16 status_code, u32 peer_capability,
bool initiator, const u8 *extra_ies,
size_t extra_ies_len);
int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
const u8 *peer, enum nl80211_tdls_operation oper);
void ieee80211_tdls_peer_del_work(struct work_struct *wk);
int ieee80211_tdls_channel_switch(struct wiphy *wiphy, struct net_device *dev,
const u8 *addr, u8 oper_class,
struct cfg80211_chan_def *chandef);
void ieee80211_tdls_cancel_channel_switch(struct wiphy *wiphy,
struct net_device *dev,
const u8 *addr);
void ieee80211_teardown_tdls_peers(struct ieee80211_sub_if_data *sdata);
void ieee80211_tdls_handle_disconnect(struct ieee80211_sub_if_data *sdata,
const u8 *peer, u16 reason);
void
ieee80211_process_tdls_channel_switch(struct ieee80211_sub_if_data *sdata,
struct sk_buff *skb);
const char *ieee80211_get_reason_code_string(u16 reason_code);
u16 ieee80211_encode_usf(int val);
u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
enum nl80211_iftype type);
extern const struct ethtool_ops ieee80211_ethtool_ops;
u32 ieee80211_calc_expected_tx_airtime(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_sta *pubsta,
int len, bool ampdu);
#ifdef CONFIG_MAC80211_NOINLINE
#define debug_noinline noinline
#else
#define debug_noinline
#endif
void ieee80211_init_frag_cache(struct ieee80211_fragment_cache *cache);
void ieee80211_destroy_frag_cache(struct ieee80211_fragment_cache *cache);
u8 ieee80211_ie_len_eht_cap(struct ieee80211_sub_if_data *sdata, u8 iftype);
u8 *ieee80211_ie_build_eht_cap(u8 *pos,
const struct ieee80211_sta_he_cap *he_cap,
const struct ieee80211_sta_eht_cap *eht_cap,
u8 *end,
bool for_ap);
void
ieee80211_eht_cap_ie_to_sta_eht_cap(struct ieee80211_sub_if_data *sdata,
struct ieee80211_supported_band *sband,
const u8 *he_cap_ie, u8 he_cap_len,
const struct ieee80211_eht_cap_elem *eht_cap_ie_elem,
u8 eht_cap_len,
struct link_sta_info *link_sta);
#endif /* IEEE80211_I_H */
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