#ifndef __NET_CFG80211_H
#define __NET_CFG80211_H
/*
* 802.11 device and configuration interface
*
* Copyright 2006-2010 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.
*/
#include <linux/netdevice.h>
#include <linux/debugfs.h>
#include <linux/list.h>
#include <linux/netlink.h>
#include <linux/skbuff.h>
#include <linux/nl80211.h>
#include <linux/if_ether.h>
#include <linux/ieee80211.h>
#include <net/regulatory.h>
/* remove once we remove the wext stuff */
#include <net/iw_handler.h>
#include <linux/wireless.h>
/**
* DOC: Introduction
*
* cfg80211 is the configuration API for 802.11 devices in Linux. It bridges
* userspace and drivers, and offers some utility functionality associated
* with 802.11. cfg80211 must, directly or indirectly via mac80211, be used
* by all modern wireless drivers in Linux, so that they offer a consistent
* API through nl80211. For backward compatibility, cfg80211 also offers
* wireless extensions to userspace, but hides them from drivers completely.
*
* Additionally, cfg80211 contains code to help enforce regulatory spectrum
* use restrictions.
*/
/**
* DOC: Device registration
*
* In order for a driver to use cfg80211, it must register the hardware device
* with cfg80211. This happens through a number of hardware capability structs
* described below.
*
* The fundamental structure for each device is the 'wiphy', of which each
* instance describes a physical wireless device connected to the system. Each
* such wiphy can have zero, one, or many virtual interfaces associated with
* it, which need to be identified as such by pointing the network interface's
* @ieee80211_ptr pointer to a &struct wireless_dev which further describes
* the wireless part of the interface, normally this struct is embedded in the
* network interface's private data area. Drivers can optionally allow creating
* or destroying virtual interfaces on the fly, but without at least one or the
* ability to create some the wireless device isn't useful.
*
* Each wiphy structure contains device capability information, and also has
* a pointer to the various operations the driver offers. The definitions and
* structures here describe these capabilities in detail.
*/
/*
* wireless hardware capability structures
*/
/**
* enum ieee80211_band - supported frequency bands
*
* The bands are assigned this way because the supported
* bitrates differ in these bands.
*
* @IEEE80211_BAND_2GHZ: 2.4GHz ISM band
* @IEEE80211_BAND_5GHZ: around 5GHz band (4.9-5.7)
* @IEEE80211_NUM_BANDS: number of defined bands
*/
enum ieee80211_band {
IEEE80211_BAND_2GHZ = NL80211_BAND_2GHZ,
IEEE80211_BAND_5GHZ = NL80211_BAND_5GHZ,
/* keep last */
IEEE80211_NUM_BANDS
};
/**
* enum ieee80211_channel_flags - channel flags
*
* Channel flags set by the regulatory control code.
*
* @IEEE80211_CHAN_DISABLED: This channel is disabled.
* @IEEE80211_CHAN_PASSIVE_SCAN: Only passive scanning is permitted
* on this channel.
* @IEEE80211_CHAN_NO_IBSS: IBSS is not allowed on this channel.
* @IEEE80211_CHAN_RADAR: Radar detection is required on this channel.
* @IEEE80211_CHAN_NO_HT40PLUS: extension channel above this channel
* is not permitted.
* @IEEE80211_CHAN_NO_HT40MINUS: extension channel below this channel
* is not permitted.
*/
enum ieee80211_channel_flags {
IEEE80211_CHAN_DISABLED = 1<<0,
IEEE80211_CHAN_PASSIVE_SCAN = 1<<1,
IEEE80211_CHAN_NO_IBSS = 1<<2,
IEEE80211_CHAN_RADAR = 1<<3,
IEEE80211_CHAN_NO_HT40PLUS = 1<<4,
IEEE80211_CHAN_NO_HT40MINUS = 1<<5,
};
#define IEEE80211_CHAN_NO_HT40 \
(IEEE80211_CHAN_NO_HT40PLUS | IEEE80211_CHAN_NO_HT40MINUS)
/**
* struct ieee80211_channel - channel definition
*
* This structure describes a single channel for use
* with cfg80211.
*
* @center_freq: center frequency in MHz
* @hw_value: hardware-specific value for the channel
* @flags: channel flags from &enum ieee80211_channel_flags.
* @orig_flags: channel flags at registration time, used by regulatory
* code to support devices with additional restrictions
* @band: band this channel belongs to.
* @max_antenna_gain: maximum antenna gain in dBi
* @max_power: maximum transmission power (in dBm)
* @beacon_found: helper to regulatory code to indicate when a beacon
* has been found on this channel. Use regulatory_hint_found_beacon()
* to enable this, this is useful only on 5 GHz band.
* @orig_mag: internal use
* @orig_mpwr: internal use
*/
struct ieee80211_channel {
enum ieee80211_band band;
u16 center_freq;
u16 hw_value;
u32 flags;
int max_antenna_gain;
int max_power;
bool beacon_found;
u32 orig_flags;
int orig_mag, orig_mpwr;
};
/**
* enum ieee80211_rate_flags - rate flags
*
* Hardware/specification flags for rates. These are structured
* in a way that allows using the same bitrate structure for
* different bands/PHY modes.
*
* @IEEE80211_RATE_SHORT_PREAMBLE: Hardware can send with short
* preamble on this bitrate; only relevant in 2.4GHz band and
* with CCK rates.
* @IEEE80211_RATE_MANDATORY_A: This bitrate is a mandatory rate
* when used with 802.11a (on the 5 GHz band); filled by the
* core code when registering the wiphy.
* @IEEE80211_RATE_MANDATORY_B: This bitrate is a mandatory rate
* when used with 802.11b (on the 2.4 GHz band); filled by the
* core code when registering the wiphy.
* @IEEE80211_RATE_MANDATORY_G: This bitrate is a mandatory rate
* when used with 802.11g (on the 2.4 GHz band); filled by the
* core code when registering the wiphy.
* @IEEE80211_RATE_ERP_G: This is an ERP rate in 802.11g mode.
*/
enum ieee80211_rate_flags {
IEEE80211_RATE_SHORT_PREAMBLE = 1<<0,
IEEE80211_RATE_MANDATORY_A = 1<<1,
IEEE80211_RATE_MANDATORY_B = 1<<2,
IEEE80211_RATE_MANDATORY_G = 1<<3,
IEEE80211_RATE_ERP_G = 1<<4,
};
/**
* struct ieee80211_rate - bitrate definition
*
* This structure describes a bitrate that an 802.11 PHY can
* operate with. The two values @hw_value and @hw_value_short
* are only for driver use when pointers to this structure are
* passed around.
*
* @flags: rate-specific flags
* @bitrate: bitrate in units of 100 Kbps
* @hw_value: driver/hardware value for this rate
* @hw_value_short: driver/hardware value for this rate when
* short preamble is used
*/
struct ieee80211_rate {
u32 flags;
u16 bitrate;
u16 hw_value, hw_value_short;
};
/**
* struct ieee80211_sta_ht_cap - STA's HT capabilities
*
* This structure describes most essential parameters needed
* to describe 802.11n HT capabilities for an STA.
*
* @ht_supported: is HT supported by the STA
* @cap: HT capabilities map as described in 802.11n spec
* @ampdu_factor: Maximum A-MPDU length factor
* @ampdu_density: Minimum A-MPDU spacing
* @mcs: Supported MCS rates
*/
struct ieee80211_sta_ht_cap {
u16 cap; /* use IEEE80211_HT_CAP_ */
bool ht_supported;
u8 ampdu_factor;
u8 ampdu_density;
struct ieee80211_mcs_info mcs;
};
/**
* struct ieee80211_supported_band - frequency band definition
*
* This structure describes a frequency band a wiphy
* is able to operate in.
*
* @channels: Array of channels the hardware can operate in
* in this band.
* @band: the band this structure represents
* @n_channels: Number of channels in @channels
* @bitrates: Array of bitrates the hardware can operate with
* in this band. Must be sorted to give a valid "supported
* rates" IE, i.e. CCK rates first, then OFDM.
* @n_bitrates: Number of bitrates in @bitrates
* @ht_cap: HT capabilities in this band
*/
struct ieee80211_supported_band {
struct ieee80211_channel *channels;
struct ieee80211_rate *bitrates;
enum ieee80211_band band;
int n_channels;
int n_bitrates;
struct ieee80211_sta_ht_cap ht_cap;
};
/*
* Wireless hardware/device configuration structures and methods
*/
/**
* DOC: Actions and configuration
*
* Each wireless device and each virtual interface offer a set of configuration
* operations and other actions that are invoked by userspace. Each of these
* actions is described in the operations structure, and the parameters these
* operations use are described separately.
*
* Additionally, some operations are asynchronous and expect to get status
* information via some functions that drivers need to call.
*
* Scanning and BSS list handling with its associated functionality is described
* in a separate chapter.
*/
/**
* struct vif_params - describes virtual interface parameters
* @use_4addr: use 4-address frames
*/
struct vif_params {
int use_4addr;
};
/**
* struct key_params - key information
*
* Information about a key
*
* @key: key material
* @key_len: length of key material
* @cipher: cipher suite selector
* @seq: sequence counter (IV/PN) for TKIP and CCMP keys, only used
* with the get_key() callback, must be in little endian,
* length given by @seq_len.
* @seq_len: length of @seq.
*/
struct key_params {
u8 *key;
u8 *seq;
int key_len;
int seq_len;
u32 cipher;
};
/**
* enum survey_info_flags - survey information flags
*
* @SURVEY_INFO_NOISE_DBM: noise (in dBm) was filled in
* @SURVEY_INFO_IN_USE: channel is currently being used
* @SURVEY_INFO_CHANNEL_TIME: channel active time (in ms) was filled in
* @SURVEY_INFO_CHANNEL_TIME_BUSY: channel busy time was filled in
* @SURVEY_INFO_CHANNEL_TIME_EXT_BUSY: extension channel busy time was filled in
* @SURVEY_INFO_CHANNEL_TIME_RX: channel receive time was filled in
* @SURVEY_INFO_CHANNEL_TIME_TX: channel transmit time was filled in
*
* Used by the driver to indicate which info in &struct survey_info
* it has filled in during the get_survey().
*/
enum survey_info_flags {
SURVEY_INFO_NOISE_DBM = 1<<0,
SURVEY_INFO_IN_USE = 1<<1,
SURVEY_INFO_CHANNEL_TIME = 1<<2,
SURVEY_INFO_CHANNEL_TIME_BUSY = 1<<3,
SURVEY_INFO_CHANNEL_TIME_EXT_BUSY = 1<<4,
SURVEY_INFO_CHANNEL_TIME_RX = 1<<5,
SURVEY_INFO_CHANNEL_TIME_TX = 1<<6,
};
/**
* struct survey_info - channel survey response
*
* @channel: the channel this survey record reports, mandatory
* @filled: bitflag of flags from &enum survey_info_flags
* @noise: channel noise in dBm. This and all following fields are
* optional
* @channel_time: amount of time in ms the radio spent on the channel
* @channel_time_busy: amount of time the primary channel was sensed busy
* @channel_time_ext_busy: amount of time the extension channel was sensed busy
* @channel_time_rx: amount of time the radio spent receiving data
* @channel_time_tx: amount of time the radio spent transmitting data
*
* Used by dump_survey() to report back per-channel survey information.
*
* This structure can later be expanded with things like
* channel duty cycle etc.
*/
struct survey_info {
struct ieee80211_channel *channel;
u64 channel_time;
u64 channel_time_busy;
u64 channel_time_ext_busy;
u64 channel_time_rx;
u64 channel_time_tx;
u32 filled;
s8 noise;
};
/**
* struct beacon_parameters - beacon parameters
*
* Used to configure the beacon for an interface.
*
* @head: head portion of beacon (before TIM IE)
* or %NULL if not changed
* @tail: tail portion of beacon (after TIM IE)
* or %NULL if not changed
* @interval: beacon interval or zero if not changed
* @dtim_period: DTIM period or zero if not changed
* @head_len: length of @head
* @tail_len: length of @tail
*/
struct beacon_parameters {
u8 *head, *tail;
int interval, dtim_period;
int head_len, tail_len;
};
/**
* enum plink_action - actions to perform in mesh peers
*
* @PLINK_ACTION_INVALID: action 0 is reserved
* @PLINK_ACTION_OPEN: start mesh peer link establishment
* @PLINK_ACTION_BLOCK: block traffic from this mesh peer
*/
enum plink_actions {
PLINK_ACTION_INVALID,
PLINK_ACTION_OPEN,
PLINK_ACTION_BLOCK,
};
/**
* struct station_parameters - station parameters
*
* Used to change and create a new station.
*
* @vlan: vlan interface station should belong to
* @supported_rates: supported rates in IEEE 802.11 format
* (or NULL for no change)
* @supported_rates_len: number of supported rates
* @sta_flags_mask: station flags that changed
* (bitmask of BIT(NL80211_STA_FLAG_...))
* @sta_flags_set: station flags values
* (bitmask of BIT(NL80211_STA_FLAG_...))
* @listen_interval: listen interval or -1 for no change
* @aid: AID or zero for no change
* @plink_action: plink action to take
* @ht_capa: HT capabilities of station
*/
struct station_parameters {
u8 *supported_rates;
struct net_device *vlan;
u32 sta_flags_mask, sta_flags_set;
int listen_interval;
u16 aid;
u8 supported_rates_len;
u8 plink_action;
struct ieee80211_ht_cap *ht_capa;
};
/**
* enum station_info_flags - station information flags
*
* Used by the driver to indicate which info in &struct station_info
* it has filled in during get_station() or dump_station().
*
* @STATION_INFO_INACTIVE_TIME: @inactive_time filled
* @STATION_INFO_RX_BYTES: @rx_bytes filled
* @STATION_INFO_TX_BYTES: @tx_bytes filled
* @STATION_INFO_LLID: @llid filled
* @STATION_INFO_PLID: @plid filled
* @STATION_INFO_PLINK_STATE: @plink_state filled
* @STATION_INFO_SIGNAL: @signal filled
* @STATION_INFO_TX_BITRATE: @txrate fields are filled
* (tx_bitrate, tx_bitrate_flags and tx_bitrate_mcs)
* @STATION_INFO_RX_PACKETS: @rx_packets filled
* @STATION_INFO_TX_PACKETS: @tx_packets filled
* @STATION_INFO_TX_RETRIES: @tx_retries filled
* @STATION_INFO_TX_FAILED: @tx_failed filled
* @STATION_INFO_RX_DROP_MISC: @rx_dropped_misc filled
* @STATION_INFO_SIGNAL_AVG: @signal_avg filled
* @STATION_INFO_RX_BITRATE: @rxrate fields are filled
*/
enum station_info_flags {
STATION_INFO_INACTIVE_TIME = 1<<0,
STATION_INFO_RX_BYTES = 1<<1,
STATION_INFO_TX_BYTES = 1<<2,
STATION_INFO_LLID = 1<<3,
STATION_INFO_PLID = 1<<4,
STATION_INFO_PLINK_STATE = 1<<5,
STATION_INFO_SIGNAL = 1<<6,
STATION_INFO_TX_BITRATE = 1<<7,
STATION_INFO_RX_PACKETS = 1<<8,
STATION_INFO_TX_PACKETS = 1<<9,
STATION_INFO_TX_RETRIES = 1<<10,
STATION_INFO_TX_FAILED = 1<<11,
STATION_INFO_RX_DROP_MISC = 1<<12,
STATION_INFO_SIGNAL_AVG = 1<<13,
STATION_INFO_RX_BITRATE = 1<<14,
};
/**
* enum station_info_rate_flags - bitrate info flags
*
* Used by the driver to indicate the specific rate transmission
* type for 802.11n transmissions.
*
* @RATE_INFO_FLAGS_MCS: @tx_bitrate_mcs filled
* @RATE_INFO_FLAGS_40_MHZ_WIDTH: 40 Mhz width transmission
* @RATE_INFO_FLAGS_SHORT_GI: 400ns guard interval
*/
enum rate_info_flags {
RATE_INFO_FLAGS_MCS = 1<<0,
RATE_INFO_FLAGS_40_MHZ_WIDTH = 1<<1,
RATE_INFO_FLAGS_SHORT_GI = 1<<2,
};
/**
* struct rate_info - bitrate information
*
* Information about a receiving or transmitting bitrate
*
* @flags: bitflag of flags from &enum rate_info_flags
* @mcs: mcs index if struct describes a 802.11n bitrate
* @legacy: bitrate in 100kbit/s for 802.11abg
*/
struct rate_info {
u8 flags;
u8 mcs;
u16 legacy;
};
/**
* struct station_info - station information
*
* Station information filled by driver for get_station() and dump_station.
*
* @filled: bitflag of flags from &enum station_info_flags
* @inactive_time: time since last station activity (tx/rx) in milliseconds
* @rx_bytes: bytes received from this station
* @tx_bytes: bytes transmitted to this station
* @llid: mesh local link id
* @plid: mesh peer link id
* @plink_state: mesh peer link state
* @signal: signal strength of last received packet in dBm
* @signal_avg: signal strength average in dBm
* @txrate: current unicast bitrate to this station
* @rx_packets: packets received from this station
* @tx_packets: packets transmitted to this station
* @tx_retries: cumulative retry counts
* @tx_failed: number of failed transmissions (retries exceeded, no ACK)
* @rx_dropped_misc: Dropped for un-specified reason.
* @generation: generation number for nl80211 dumps.
* This number should increase every time the list of stations
* changes, i.e. when a station is added or removed, so that
* userspace can tell whether it got a consistent snapshot.
*/
struct station_info {
u32 filled;
u32 inactive_time;
u32 rx_bytes;
u32 tx_bytes;
u16 llid;
u16 plid;
u8 plink_state;
s8 signal;
s8 signal_avg;
struct rate_info txrate;
struct rate_info rxrate;
u32 rx_packets;
u32 tx_packets;
u32 tx_retries;
u32 tx_failed;
u32 rx_dropped_misc;
int generation;
};
/**
* enum monitor_flags - monitor flags
*
* Monitor interface configuration flags. Note that these must be the bits
* according to the nl80211 flags.
*
* @MONITOR_FLAG_FCSFAIL: pass frames with bad FCS
* @MONITOR_FLAG_PLCPFAIL: pass frames with bad PLCP
* @MONITOR_FLAG_CONTROL: pass control frames
* @MONITOR_FLAG_OTHER_BSS: disable BSSID filtering
* @MONITOR_FLAG_COOK_FRAMES: report frames after processing
*/
enum monitor_flags {
MONITOR_FLAG_FCSFAIL = 1<<NL80211_MNTR_FLAG_FCSFAIL,
MONITOR_FLAG_PLCPFAIL = 1<<NL80211_MNTR_FLAG_PLCPFAIL,
MONITOR_FLAG_CONTROL = 1<<NL80211_MNTR_FLAG_CONTROL,
MONITOR_FLAG_OTHER_BSS = 1<<NL80211_MNTR_FLAG_OTHER_BSS,
MONITOR_FLAG_COOK_FRAMES = 1<<NL80211_MNTR_FLAG_COOK_FRAMES,
};
/**
* enum mpath_info_flags - mesh path information flags
*
* Used by the driver to indicate which info in &struct mpath_info it has filled
* in during get_station() or dump_station().
*
* @MPATH_INFO_FRAME_QLEN: @frame_qlen filled
* @MPATH_INFO_SN: @sn filled
* @MPATH_INFO_METRIC: @metric filled
* @MPATH_INFO_EXPTIME: @exptime filled
* @MPATH_INFO_DISCOVERY_TIMEOUT: @discovery_timeout filled
* @MPATH_INFO_DISCOVERY_RETRIES: @discovery_retries filled
* @MPATH_INFO_FLAGS: @flags filled
*/
enum mpath_info_flags {
MPATH_INFO_FRAME_QLEN = BIT(0),
MPATH_INFO_SN = BIT(1),
MPATH_INFO_METRIC = BIT(2),
MPATH_INFO_EXPTIME = BIT(3),
MPATH_INFO_DISCOVERY_TIMEOUT = BIT(4),
MPATH_INFO_DISCOVERY_RETRIES = BIT(5),
MPATH_INFO_FLAGS = BIT(6),
};
/**
* struct mpath_info - mesh path information
*
* Mesh path information filled by driver for get_mpath() and dump_mpath().
*
* @filled: bitfield of flags from &enum mpath_info_flags
* @frame_qlen: number of queued frames for this destination
* @sn: target sequence number
* @metric: metric (cost) of this mesh path
* @exptime: expiration time for the mesh path from now, in msecs
* @flags: mesh path flags
* @discovery_timeout: total mesh path discovery timeout, in msecs
* @discovery_retries: mesh path discovery retries
* @generation: generation number for nl80211 dumps.
* This number should increase every time the list of mesh paths
* changes, i.e. when a station is added or removed, so that
* userspace can tell whether it got a consistent snapshot.
*/
struct mpath_info {
u32 filled;
u32 frame_qlen;
u32 sn;
u32 metric;
u32 exptime;
u32 discovery_timeout;
u8 discovery_retries;
u8 flags;
int generation;
};
/**
* struct bss_parameters - BSS parameters
*
* Used to change BSS parameters (mainly for AP mode).
*
* @use_cts_prot: Whether to use CTS protection
* (0 = no, 1 = yes, -1 = do not change)
* @use_short_preamble: Whether the use of short preambles is allowed
* (0 = no, 1 = yes, -1 = do not change)
* @use_short_slot_time: Whether the use of short slot time is allowed
* (0 = no, 1 = yes, -1 = do not change)
* @basic_rates: basic rates in IEEE 802.11 format
* (or NULL for no change)
* @basic_rates_len: number of basic rates
* @ap_isolate: do not forward packets between connected stations
* @ht_opmode: HT Operation mode
* (u16 = opmode, -1 = do not change)
*/
struct bss_parameters {
int use_cts_prot;
int use_short_preamble;
int use_short_slot_time;
u8 *basic_rates;
u8 basic_rates_len;
int ap_isolate;
int ht_opmode;
};
/*
* struct mesh_config - 802.11s mesh configuration
*
* These parameters can be changed while the mesh is active.
*/
struct mesh_config {
/* Timeouts in ms */
/* Mesh plink management parameters */
u16 dot11MeshRetryTimeout;
u16 dot11MeshConfirmTimeout;
u16 dot11MeshHoldingTimeout;
u16 dot11MeshMaxPeerLinks;
u8 dot11MeshMaxRetries;
u8 dot11MeshTTL;
/* ttl used in path selection information elements */
u8 element_ttl;
bool auto_open_plinks;
/* HWMP parameters */
u8 dot11MeshHWMPmaxPREQretries;
u32 path_refresh_time;
u16 min_discovery_timeout;
u32 dot11MeshHWMPactivePathTimeout;
u16 dot11MeshHWMPpreqMinInterval;
u16 dot11MeshHWMPnetDiameterTraversalTime;
u8 dot11MeshHWMPRootMode;
};
/**
* struct mesh_setup - 802.11s mesh setup configuration
* @mesh_id: the mesh ID
* @mesh_id_len: length of the mesh ID, at least 1 and at most 32 bytes
* @path_sel_proto: which path selection protocol to use
* @path_metric: which metric to use
* @vendor_ie: vendor information elements (optional)
* @vendor_ie_len: length of vendor information elements
*
* These parameters are fixed when the mesh is created.
*/
struct mesh_setup {
const u8 *mesh_id;
u8 mesh_id_len;
u8 path_sel_proto;
u8 path_metric;
const u8 *vendor_ie;
u8 vendor_ie_len;
};
/**
* struct ieee80211_txq_params - TX queue parameters
* @queue: TX queue identifier (NL80211_TXQ_Q_*)
* @txop: Maximum burst time in units of 32 usecs, 0 meaning disabled
* @cwmin: Minimum contention window [a value of the form 2^n-1 in the range
* 1..32767]
* @cwmax: Maximum contention window [a value of the form 2^n-1 in the range
* 1..32767]
* @aifs: Arbitration interframe space [0..255]
*/
struct ieee80211_txq_params {
enum nl80211_txq_q queue;
u16 txop;
u16 cwmin;
u16 cwmax;
u8 aifs;
};
/* from net/wireless.h */
struct wiphy;
/**
* DOC: Scanning and BSS list handling
*
* The scanning process itself is fairly simple, but cfg80211 offers quite
* a bit of helper functionality. To start a scan, the scan operation will
* be invoked with a scan definition. This scan definition contains the
* channels to scan, and the SSIDs to send probe requests for (including the
* wildcard, if desired). A passive scan is indicated by having no SSIDs to
* probe. Additionally, a scan request may contain extra information elements
* that should be added to the probe request. The IEs are guaranteed to be
* well-formed, and will not exceed the maximum length the driver advertised
* in the wiphy structure.
*
* When scanning finds a BSS, cfg80211 needs to be notified of that, because
* it is responsible for maintaining the BSS list; the driver should not
* maintain a list itself. For this notification, various functions exist.
*
* Since drivers do not maintain a BSS list, there are also a number of
* functions to search for a BSS and obtain information about it from the
* BSS structure cfg80211 maintains. The BSS list is also made available
* to userspace.
*/
/**
* struct cfg80211_ssid - SSID description
* @ssid: the SSID
* @ssid_len: length of the ssid
*/
struct cfg80211_ssid {
u8 ssid[IEEE80211_MAX_SSID_LEN];
u8 ssid_len;
};
/**
* struct cfg80211_scan_request - scan request description
*
* @ssids: SSIDs to scan for (active scan only)
* @n_ssids: number of SSIDs
* @channels: channels to scan on.
* @n_channels: total number of channels to scan
* @ie: optional information element(s) to add into Probe Request or %NULL
* @ie_len: length of ie in octets
* @wiphy: the wiphy this was for
* @dev: the interface
* @aborted: (internal) scan request was notified as aborted
*/
struct cfg80211_scan_request {
struct cfg80211_ssid *ssids;
int n_ssids;
u32 n_channels;
const u8 *ie;
size_t ie_len;
/* internal */
struct wiphy *wiphy;
struct net_device *dev;
bool aborted;
/* keep last */
struct ieee80211_channel *channels[0];
};
/**
* enum cfg80211_signal_type - signal type
*
* @CFG80211_SIGNAL_TYPE_NONE: no signal strength information available
* @CFG80211_SIGNAL_TYPE_MBM: signal strength in mBm (100*dBm)
* @CFG80211_SIGNAL_TYPE_UNSPEC: signal strength, increasing from 0 through 100
*/
enum cfg80211_signal_type {
CFG80211_SIGNAL_TYPE_NONE,
CFG80211_SIGNAL_TYPE_MBM,
CFG80211_SIGNAL_TYPE_UNSPEC,
};
/**
* struct cfg80211_bss - BSS description
*
* This structure describes a BSS (which may also be a mesh network)
* for use in scan results and similar.
*
* @channel: channel this BSS is on
* @bssid: BSSID of the BSS
* @tsf: timestamp of last received update
* @beacon_interval: the beacon interval as from the frame
* @capability: the capability field in host byte order
* @information_elements: the information elements (Note that there
* is no guarantee that these are well-formed!); this is a pointer to
* either the beacon_ies or proberesp_ies depending on whether Probe
* Response frame has been received
* @len_information_elements: total length of the information elements
* @beacon_ies: the information elements from the last Beacon frame
* @len_beacon_ies: total length of the beacon_ies
* @proberesp_ies: the information elements from the last Probe Response frame
* @len_proberesp_ies: total length of the proberesp_ies
* @signal: signal strength value (type depends on the wiphy's signal_type)
* @free_priv: function pointer to free private data
* @priv: private area for driver use, has at least wiphy->bss_priv_size bytes
*/
struct cfg80211_bss {
struct ieee80211_channel *channel;
u8 bssid[ETH_ALEN];
u64 tsf;
u16 beacon_interval;
u16 capability;
u8 *information_elements;
size_t len_information_elements;
u8 *beacon_ies;
size_t len_beacon_ies;
u8 *proberesp_ies;
size_t len_proberesp_ies;
s32 signal;
void (*free_priv)(struct cfg80211_bss *bss);
u8 priv[0] __attribute__((__aligned__(sizeof(void *))));
};
/**
* ieee80211_bss_get_ie - find IE with given ID
* @bss: the bss to search
* @ie: the IE ID
* Returns %NULL if not found.
*/
const u8 *ieee80211_bss_get_ie(struct cfg80211_bss *bss, u8 ie);
/**
* struct cfg80211_crypto_settings - Crypto settings
* @wpa_versions: indicates which, if any, WPA versions are enabled
* (from enum nl80211_wpa_versions)
* @cipher_group: group key cipher suite (or 0 if unset)
* @n_ciphers_pairwise: number of AP supported unicast ciphers
* @ciphers_pairwise: unicast key cipher suites
* @n_akm_suites: number of AKM suites
* @akm_suites: AKM suites
* @control_port: Whether user space controls IEEE 802.1X port, i.e.,
* sets/clears %NL80211_STA_FLAG_AUTHORIZED. If true, the driver is
* required to assume that the port is unauthorized until authorized by
* user space. Otherwise, port is marked authorized by default.
* @control_port_ethertype: the control port protocol that should be
* allowed through even on unauthorized ports
* @control_port_no_encrypt: TRUE to prevent encryption of control port
* protocol frames.
*/
struct cfg80211_crypto_settings {
u32 wpa_versions;
u32 cipher_group;
int n_ciphers_pairwise;
u32 ciphers_pairwise[NL80211_MAX_NR_CIPHER_SUITES];
int n_akm_suites;
u32 akm_suites[NL80211_MAX_NR_AKM_SUITES];
bool control_port;
__be16 control_port_ethertype;
bool control_port_no_encrypt;
};
/**
* struct cfg80211_auth_request - Authentication request data
*
* This structure provides information needed to complete IEEE 802.11
* authentication.
*
* @bss: The BSS to authenticate with.
* @auth_type: Authentication type (algorithm)
* @ie: Extra IEs to add to Authentication frame or %NULL
* @ie_len: Length of ie buffer in octets
* @key_len: length of WEP key for shared key authentication
* @key_idx: index of WEP key for shared key authentication
* @key: WEP key for shared key authentication
* @local_state_change: This is a request for a local state only, i.e., no
* Authentication frame is to be transmitted and authentication state is
* to be changed without having to wait for a response from the peer STA
* (AP).
*/
struct cfg80211_auth_request {
struct cfg80211_bss *bss;
const u8 *ie;
size_t ie_len;
enum nl80211_auth_type auth_type;
const u8 *key;
u8 key_len, key_idx;
bool local_state_change;
};
/**
* struct cfg80211_assoc_request - (Re)Association request data
*
* This structure provides information needed to complete IEEE 802.11
* (re)association.
* @bss: The BSS to associate with.
* @ie: Extra IEs to add to (Re)Association Request frame or %NULL
* @ie_len: Length of ie buffer in octets
* @use_mfp: Use management frame protection (IEEE 802.11w) in this association
* @crypto: crypto settings
* @prev_bssid: previous BSSID, if not %NULL use reassociate frame
*/
struct cfg80211_assoc_request {
struct cfg80211_bss *bss;
const u8 *ie, *prev_bssid;
size_t ie_len;
struct cfg80211_crypto_settings crypto;
bool use_mfp;
};
/**
* struct cfg80211_deauth_request - Deauthentication request data
*
* This structure provides information needed to complete IEEE 802.11
* deauthentication.
*
* @bss: the BSS to deauthenticate from
* @ie: Extra IEs to add to Deauthentication frame or %NULL
* @ie_len: Length of ie buffer in octets
* @reason_code: The reason code for the deauthentication
* @local_state_change: This is a request for a local state only, i.e., no
* Deauthentication frame is to be transmitted.
*/
struct cfg80211_deauth_request {
struct cfg80211_bss *bss;
const u8 *ie;
size_t ie_len;
u16 reason_code;
bool local_state_change;
};
/**
* struct cfg80211_disassoc_request - Disassociation request data
*
* This structure provides information needed to complete IEEE 802.11
* disassocation.
*
* @bss: the BSS to disassociate from
* @ie: Extra IEs to add to Disassociation frame or %NULL
* @ie_len: Length of ie buffer in octets
* @reason_code: The reason code for the disassociation
* @local_state_change: This is a request for a local state only, i.e., no
* Disassociation frame is to be transmitted.
*/
struct cfg80211_disassoc_request {
struct cfg80211_bss *bss;
const u8 *ie;
size_t ie_len;
u16 reason_code;
bool local_state_change;
};
/**
* struct cfg80211_ibss_params - IBSS parameters
*
* This structure defines the IBSS parameters for the join_ibss()
* method.
*
* @ssid: The SSID, will always be non-null.
* @ssid_len: The length of the SSID, will always be non-zero.
* @bssid: Fixed BSSID requested, maybe be %NULL, if set do not
* search for IBSSs with a different BSSID.
* @channel: The channel to use if no IBSS can be found to join.
* @channel_fixed: The channel should be fixed -- do not search for
* IBSSs to join on other channels.
* @ie: information element(s) to include in the beacon
* @ie_len: length of that
* @beacon_interval: beacon interval to use
* @privacy: this is a protected network, keys will be configured
* after joining
* @basic_rates: bitmap of basic rates to use when creating the IBSS
* @mcast_rate: per-band multicast rate index + 1 (0: disabled)
*/
struct cfg80211_ibss_params {
u8 *ssid;
u8 *bssid;
struct ieee80211_channel *channel;
u8 *ie;
u8 ssid_len, ie_len;
u16 beacon_interval;
u32 basic_rates;
bool channel_fixed;
bool privacy;
int mcast_rate[IEEE80211_NUM_BANDS];
};
/**
* struct cfg80211_connect_params - Connection parameters
*
* This structure provides information needed to complete IEEE 802.11
* authentication and association.
*
* @channel: The channel to use or %NULL if not specified (auto-select based
* on scan results)
* @bssid: The AP BSSID or %NULL if not specified (auto-select based on scan
* results)
* @ssid: SSID
* @ssid_len: Length of ssid in octets
* @auth_type: Authentication type (algorithm)
* @ie: IEs for association request
* @ie_len: Length of assoc_ie in octets
* @privacy: indicates whether privacy-enabled APs should be used
* @crypto: crypto settings
* @key_len: length of WEP key for shared key authentication
* @key_idx: index of WEP key for shared key authentication
* @key: WEP key for shared key authentication
*/
struct cfg80211_connect_params {
struct ieee80211_channel *channel;
u8 *bssid;
u8 *ssid;
size_t ssid_len;
enum nl80211_auth_type auth_type;
u8 *ie;
size_t ie_len;
bool privacy;
struct cfg80211_crypto_settings crypto;
const u8 *key;
u8 key_len, key_idx;
};
/**
* enum wiphy_params_flags - set_wiphy_params bitfield values
* @WIPHY_PARAM_RETRY_SHORT: wiphy->retry_short has changed
* @WIPHY_PARAM_RETRY_LONG: wiphy->retry_long has changed
* @WIPHY_PARAM_FRAG_THRESHOLD: wiphy->frag_threshold has changed
* @WIPHY_PARAM_RTS_THRESHOLD: wiphy->rts_threshold has changed
* @WIPHY_PARAM_COVERAGE_CLASS: coverage class changed
*/
enum wiphy_params_flags {
WIPHY_PARAM_RETRY_SHORT = 1 << 0,
WIPHY_PARAM_RETRY_LONG = 1 << 1,
WIPHY_PARAM_FRAG_THRESHOLD = 1 << 2,
WIPHY_PARAM_RTS_THRESHOLD = 1 << 3,
WIPHY_PARAM_COVERAGE_CLASS = 1 << 4,
};
/*
* cfg80211_bitrate_mask - masks for bitrate control
*/
struct cfg80211_bitrate_mask {
struct {
u32 legacy;
/* TODO: add support for masking MCS rates; e.g.: */
/* u8 mcs[IEEE80211_HT_MCS_MASK_LEN]; */
} control[IEEE80211_NUM_BANDS];
};
/**
* struct cfg80211_pmksa - PMK Security Association
*
* This structure is passed to the set/del_pmksa() method for PMKSA
* caching.
*
* @bssid: The AP's BSSID.
* @pmkid: The PMK material itself.
*/
struct cfg80211_pmksa {
u8 *bssid;
u8 *pmkid;
};
/**
* struct cfg80211_ops - backend description for wireless configuration
*
* This struct is registered by fullmac card drivers and/or wireless stacks
* in order to handle configuration requests on their interfaces.
*
* All callbacks except where otherwise noted should return 0
* on success or a negative error code.
*
* All operations are currently invoked under rtnl for consistency with the
* wireless extensions but this is subject to reevaluation as soon as this
* code is used more widely and we have a first user without wext.
*
* @suspend: wiphy device needs to be suspended
* @resume: wiphy device needs to be resumed
*
* @add_virtual_intf: create a new virtual interface with the given name,
* must set the struct wireless_dev's iftype. Beware: You must create
* the new netdev in the wiphy's network namespace! Returns the netdev,
* or an ERR_PTR.
*
* @del_virtual_intf: remove the virtual interface determined by ifindex.
*
* @change_virtual_intf: change type/configuration of virtual interface,
* keep the struct wireless_dev's iftype updated.
*
* @add_key: add a key with the given parameters. @mac_addr will be %NULL
* when adding a group key.
*
* @get_key: get information about the key with the given parameters.
* @mac_addr will be %NULL when requesting information for a group
* key. All pointers given to the @callback function need not be valid
* after it returns. This function should return an error if it is
* not possible to retrieve the key, -ENOENT if it doesn't exist.
*
* @del_key: remove a key given the @mac_addr (%NULL for a group key)
* and @key_index, return -ENOENT if the key doesn't exist.
*
* @set_default_key: set the default key on an interface
*
* @set_default_mgmt_key: set the default management frame key on an interface
*
* @add_beacon: Add a beacon with given parameters, @head, @interval
* and @dtim_period will be valid, @tail is optional.
* @set_beacon: Change the beacon parameters for an access point mode
* interface. This should reject the call when no beacon has been
* configured.
* @del_beacon: Remove beacon configuration and stop sending the beacon.
*
* @add_station: Add a new station.
* @del_station: Remove a station; @mac may be NULL to remove all stations.
* @change_station: Modify a given station.
* @get_station: get station information for the station identified by @mac
* @dump_station: dump station callback -- resume dump at index @idx
*
* @add_mpath: add a fixed mesh path
* @del_mpath: delete a given mesh path
* @change_mpath: change a given mesh path
* @get_mpath: get a mesh path for the given parameters
* @dump_mpath: dump mesh path callback -- resume dump at index @idx
* @join_mesh: join the mesh network with the specified parameters
* @leave_mesh: leave the current mesh network
*
* @get_mesh_config: Get the current mesh configuration
*
* @update_mesh_config: Update mesh parameters on a running mesh.
* The mask is a bitfield which tells us which parameters to
* set, and which to leave alone.
*
* @change_bss: Modify parameters for a given BSS.
*
* @set_txq_params: Set TX queue parameters
*
* @set_channel: Set channel for a given wireless interface. Some devices
* may support multi-channel operation (by channel hopping) so cfg80211
* doesn't verify much. Note, however, that the passed netdev may be
* %NULL as well if the user requested changing the channel for the
* device itself, or for a monitor interface.
*
* @scan: Request to do a scan. If returning zero, the scan request is given
* the driver, and will be valid until passed to cfg80211_scan_done().
* For scan results, call cfg80211_inform_bss(); you can call this outside
* the scan/scan_done bracket too.
*
* @auth: Request to authenticate with the specified peer
* @assoc: Request to (re)associate with the specified peer
* @deauth: Request to deauthenticate from the specified peer
* @disassoc: Request to disassociate from the specified peer
*
* @connect: Connect to the ESS with the specified parameters. When connected,
* call cfg80211_connect_result() with status code %WLAN_STATUS_SUCCESS.
* If the connection fails for some reason, call cfg80211_connect_result()
* with the status from the AP.
* @disconnect: Disconnect from the BSS/ESS.
*
* @join_ibss: Join the specified IBSS (or create if necessary). Once done, call
* cfg80211_ibss_joined(), also call that function when changing BSSID due
* to a merge.
* @leave_ibss: Leave the IBSS.
*
* @set_wiphy_params: Notify that wiphy parameters have changed;
* @changed bitfield (see &enum wiphy_params_flags) describes which values
* have changed. The actual parameter values are available in
* struct wiphy. If returning an error, no value should be changed.
*
* @set_tx_power: set the transmit power according to the parameters
* @get_tx_power: store the current TX power into the dbm variable;
* return 0 if successful
*
* @set_wds_peer: set the WDS peer for a WDS interface
*
* @rfkill_poll: polls the hw rfkill line, use cfg80211 reporting
* functions to adjust rfkill hw state
*
* @dump_survey: get site survey information.
*
* @remain_on_channel: Request the driver to remain awake on the specified
* channel for the specified duration to complete an off-channel
* operation (e.g., public action frame exchange). When the driver is
* ready on the requested channel, it must indicate this with an event
* notification by calling cfg80211_ready_on_channel().
* @cancel_remain_on_channel: Cancel an on-going remain-on-channel operation.
* This allows the operation to be terminated prior to timeout based on
* the duration value.
* @mgmt_tx: Transmit a management frame.
* @mgmt_tx_cancel_wait: Cancel the wait time from transmitting a management
* frame on another channel
*
* @testmode_cmd: run a test mode command
*
* @set_bitrate_mask: set the bitrate mask configuration
*
* @set_pmksa: Cache a PMKID for a BSSID. This is mostly useful for fullmac
* devices running firmwares capable of generating the (re) association
* RSN IE. It allows for faster roaming between WPA2 BSSIDs.
* @del_pmksa: Delete a cached PMKID.
* @flush_pmksa: Flush all cached PMKIDs.
* @set_power_mgmt: Configure WLAN power management. A timeout value of -1
* allows the driver to adjust the dynamic ps timeout value.
* @set_cqm_rssi_config: Configure connection quality monitor RSSI threshold.
*
* @mgmt_frame_register: Notify driver that a management frame type was
* registered. Note that this callback may not sleep, and cannot run
* concurrently with itself.
*
* @set_antenna: Set antenna configuration (tx_ant, rx_ant) on the device.
* Parameters are bitmaps of allowed antennas to use for TX/RX. Drivers may
* reject TX/RX mask combinations they cannot support by returning -EINVAL
* (also see nl80211.h @NL80211_ATTR_WIPHY_ANTENNA_TX).
*
* @get_antenna: Get current antenna configuration from device (tx_ant, rx_ant).
*/
struct cfg80211_ops {
int (*suspend)(struct wiphy *wiphy);
int (*resume)(struct wiphy *wiphy);
struct net_device * (*add_virtual_intf)(struct wiphy *wiphy,
char *name,
enum nl80211_iftype type,
u32 *flags,
struct vif_params *params);
int (*del_virtual_intf)(struct wiphy *wiphy, struct net_device *dev);
int (*change_virtual_intf)(struct wiphy *wiphy,
struct net_device *dev,
enum nl80211_iftype type, u32 *flags,
struct vif_params *params);
int (*add_key)(struct wiphy *wiphy, struct net_device *netdev,
u8 key_index, bool pairwise, const u8 *mac_addr,
struct key_params *params);
int (*get_key)(struct wiphy *wiphy, struct net_device *netdev,
u8 key_index, bool pairwise, const u8 *mac_addr,
void *cookie,
void (*callback)(void *cookie, struct key_params*));
int (*del_key)(struct wiphy *wiphy, struct net_device *netdev,
u8 key_index, bool pairwise, const u8 *mac_addr);
int (*set_default_key)(struct wiphy *wiphy,
struct net_device *netdev,
u8 key_index, bool unicast, bool multicast);
int (*set_default_mgmt_key)(struct wiphy *wiphy,
struct net_device *netdev,
u8 key_index);
int (*add_beacon)(struct wiphy *wiphy, struct net_device *dev,
struct beacon_parameters *info);
int (*set_beacon)(struct wiphy *wiphy, struct net_device *dev,
struct beacon_parameters *info);
int (*del_beacon)(struct wiphy *wiphy, struct net_device *dev);
int (*add_station)(struct wiphy *wiphy, struct net_device *dev,
u8 *mac, struct station_parameters *params);
int (*del_station)(struct wiphy *wiphy, struct net_device *dev,
u8 *mac);
int (*change_station)(struct wiphy *wiphy, struct net_device *dev,
u8 *mac, struct station_parameters *params);
int (*get_station)(struct wiphy *wiphy, struct net_device *dev,
u8 *mac, struct station_info *sinfo);
int (*dump_station)(struct wiphy *wiphy, struct net_device *dev,
int idx, u8 *mac, struct station_info *sinfo);
int (*add_mpath)(struct wiphy *wiphy, struct net_device *dev,
u8 *dst, u8 *next_hop);
int (*del_mpath)(struct wiphy *wiphy, struct net_device *dev,
u8 *dst);
int (*change_mpath)(struct wiphy *wiphy, struct net_device *dev,
u8 *dst, u8 *next_hop);
int (*get_mpath)(struct wiphy *wiphy, struct net_device *dev,
u8 *dst, u8 *next_hop,
struct mpath_info *pinfo);
int (*dump_mpath)(struct wiphy *wiphy, struct net_device *dev,
int idx, u8 *dst, u8 *next_hop,
struct mpath_info *pinfo);
int (*get_mesh_config)(struct wiphy *wiphy,
struct net_device *dev,
struct mesh_config *conf);
int (*update_mesh_config)(struct wiphy *wiphy,
struct net_device *dev, u32 mask,
const struct mesh_config *nconf);
int (*join_mesh)(struct wiphy *wiphy, struct net_device *dev,
const struct mesh_config *conf,
const struct mesh_setup *setup);
int (*leave_mesh)(struct wiphy *wiphy, struct net_device *dev);
int (*change_bss)(struct wiphy *wiphy, struct net_device *dev,
struct bss_parameters *params);
int (*set_txq_params)(struct wiphy *wiphy,
struct ieee80211_txq_params *params);
int (*set_channel)(struct wiphy *wiphy, struct net_device *dev,
struct ieee80211_channel *chan,
enum nl80211_channel_type channel_type);
int (*scan)(struct wiphy *wiphy, struct net_device *dev,
struct cfg80211_scan_request *request);
int (*auth)(struct wiphy *wiphy, struct net_device *dev,
struct cfg80211_auth_request *req);
int (*assoc)(struct wiphy *wiphy, struct net_device *dev,
struct cfg80211_assoc_request *req);
int (*deauth)(struct wiphy *wiphy, struct net_device *dev,
struct cfg80211_deauth_request *req,
void *cookie);
int (*disassoc)(struct wiphy *wiphy, struct net_device *dev,
struct cfg80211_disassoc_request *req,
void *cookie);
int (*connect)(struct wiphy *wiphy, struct net_device *dev,
struct cfg80211_connect_params *sme);
int (*disconnect)(struct wiphy *wiphy, struct net_device *dev,
u16 reason_code);
int (*join_ibss)(struct wiphy *wiphy, struct net_device *dev,
struct cfg80211_ibss_params *params);
int (*leave_ibss)(struct wiphy *wiphy, struct net_device *dev);
int (*set_wiphy_params)(struct wiphy *wiphy, u32 changed);
int (*set_tx_power)(struct wiphy *wiphy,
enum nl80211_tx_power_setting type, int mbm);
int (*get_tx_power)(struct wiphy *wiphy, int *dbm);
int (*set_wds_peer)(struct wiphy *wiphy, struct net_device *dev,
const u8 *addr);
void (*rfkill_poll)(struct wiphy *wiphy);
#ifdef CONFIG_NL80211_TESTMODE
int (*testmode_cmd)(struct wiphy *wiphy, void *data, int len);
#endif
int (*set_bitrate_mask)(struct wiphy *wiphy,
struct net_device *dev,
const u8 *peer,
const struct cfg80211_bitrate_mask *mask);
int (*dump_survey)(struct wiphy *wiphy, struct net_device *netdev,
int idx, struct survey_info *info);
int (*set_pmksa)(struct wiphy *wiphy, struct net_device *netdev,
struct cfg80211_pmksa *pmksa);
int (*del_pmksa)(struct wiphy *wiphy, struct net_device *netdev,
struct cfg80211_pmksa *pmksa);
int (*flush_pmksa)(struct wiphy *wiphy, struct net_device *netdev);
int (*remain_on_channel)(struct wiphy *wiphy,
struct net_device *dev,
struct ieee80211_channel *chan,
enum nl80211_channel_type channel_type,
unsigned int duration,
u64 *cookie);
int (*cancel_remain_on_channel)(struct wiphy *wiphy,
struct net_device *dev,
u64 cookie);
int (*mgmt_tx)(struct wiphy *wiphy, struct net_device *dev,
struct ieee80211_channel *chan, bool offchan,
enum nl80211_channel_type channel_type,
bool channel_type_valid, unsigned int wait,
const u8 *buf, size_t len, u64 *cookie);
int (*mgmt_tx_cancel_wait)(struct wiphy *wiphy,
struct net_device *dev,
u64 cookie);
int (*set_power_mgmt)(struct wiphy *wiphy, struct net_device *dev,
bool enabled, int timeout);
int (*set_cqm_rssi_config)(struct wiphy *wiphy,
struct net_device *dev,
s32 rssi_thold, u32 rssi_hyst);
void (*mgmt_frame_register)(struct wiphy *wiphy,
struct net_device *dev,
u16 frame_type, bool reg);
int (*set_antenna)(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant);
int (*get_antenna)(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant);
};
/*
* wireless hardware and networking interfaces structures
* and registration/helper functions
*/
/**
* enum wiphy_flags - wiphy capability flags
*
* @WIPHY_FLAG_CUSTOM_REGULATORY: tells us the driver for this device
* has its own custom regulatory domain and cannot identify the
* ISO / IEC 3166 alpha2 it belongs to. When this is enabled
* we will disregard the first regulatory hint (when the
* initiator is %REGDOM_SET_BY_CORE).
* @WIPHY_FLAG_STRICT_REGULATORY: tells us the driver for this device will
* ignore regulatory domain settings until it gets its own regulatory
* domain via its regulatory_hint() unless the regulatory hint is
* from a country IE. After its gets its own regulatory domain it will
* only allow further regulatory domain settings to further enhance
* compliance. For example if channel 13 and 14 are disabled by this
* regulatory domain no user regulatory domain can enable these channels
* at a later time. This can be used for devices which do not have
* calibration information guaranteed for frequencies or settings
* outside of its regulatory domain.
* @WIPHY_FLAG_DISABLE_BEACON_HINTS: enable this if your driver needs to ensure
* that passive scan flags and beaconing flags may not be lifted by
* cfg80211 due to regulatory beacon hints. For more information on beacon
* hints read the documenation for regulatory_hint_found_beacon()
* @WIPHY_FLAG_NETNS_OK: if not set, do not allow changing the netns of this
* wiphy at all
* @WIPHY_FLAG_PS_ON_BY_DEFAULT: if set to true, powersave will be enabled
* by default -- this flag will be set depending on the kernel's default
* on wiphy_new(), but can be changed by the driver if it has a good
* reason to override the default
* @WIPHY_FLAG_4ADDR_AP: supports 4addr mode even on AP (with a single station
* on a VLAN interface)
* @WIPHY_FLAG_4ADDR_STATION: supports 4addr mode even as a station
* @WIPHY_FLAG_CONTROL_PORT_PROTOCOL: This device supports setting the
* control port protocol ethertype. The device also honours the
* control_port_no_encrypt flag.
* @WIPHY_FLAG_IBSS_RSN: The device supports IBSS RSN.
* @WIPHY_FLAG_SUPPORTS_SEPARATE_DEFAULT_KEYS: The device supports separate
* unicast and multicast TX keys.
*/
enum wiphy_flags {
WIPHY_FLAG_CUSTOM_REGULATORY = BIT(0),
WIPHY_FLAG_STRICT_REGULATORY = BIT(1),
WIPHY_FLAG_DISABLE_BEACON_HINTS = BIT(2),
WIPHY_FLAG_NETNS_OK = BIT(3),
WIPHY_FLAG_PS_ON_BY_DEFAULT = BIT(4),
WIPHY_FLAG_4ADDR_AP = BIT(5),
WIPHY_FLAG_4ADDR_STATION = BIT(6),
WIPHY_FLAG_CONTROL_PORT_PROTOCOL = BIT(7),
WIPHY_FLAG_IBSS_RSN = BIT(8),
WIPHY_FLAG_SUPPORTS_SEPARATE_DEFAULT_KEYS= BIT(9),
};
struct mac_address {
u8 addr[ETH_ALEN];
};
struct ieee80211_txrx_stypes {
u16 tx, rx;
};
/**
* struct wiphy - wireless hardware description
* @reg_notifier: the driver's regulatory notification callback,
* note that if your driver uses wiphy_apply_custom_regulatory()
* the reg_notifier's request can be passed as NULL
* @regd: the driver's regulatory domain, if one was requested via
* the regulatory_hint() API. This can be used by the driver
* on the reg_notifier() if it chooses to ignore future
* regulatory domain changes caused by other drivers.
* @signal_type: signal type reported in &struct cfg80211_bss.
* @cipher_suites: supported cipher suites
* @n_cipher_suites: number of supported cipher suites
* @retry_short: Retry limit for short frames (dot11ShortRetryLimit)
* @retry_long: Retry limit for long frames (dot11LongRetryLimit)
* @frag_threshold: Fragmentation threshold (dot11FragmentationThreshold);
* -1 = fragmentation disabled, only odd values >= 256 used
* @rts_threshold: RTS threshold (dot11RTSThreshold); -1 = RTS/CTS disabled
* @_net: the network namespace this wiphy currently lives in
* @perm_addr: permanent MAC address of this device
* @addr_mask: If the device supports multiple MAC addresses by masking,
* set this to a mask with variable bits set to 1, e.g. if the last
* four bits are variable then set it to 00:...:00:0f. The actual
* variable bits shall be determined by the interfaces added, with
* interfaces not matching the mask being rejected to be brought up.
* @n_addresses: number of addresses in @addresses.
* @addresses: If the device has more than one address, set this pointer
* to a list of addresses (6 bytes each). The first one will be used
* by default for perm_addr. In this case, the mask should be set to
* all-zeroes. In this case it is assumed that the device can handle
* the same number of arbitrary MAC addresses.
* @debugfsdir: debugfs directory used for this wiphy, will be renamed
* automatically on wiphy renames
* @dev: (virtual) struct device for this wiphy
* @wext: wireless extension handlers
* @priv: driver private data (sized according to wiphy_new() parameter)
* @interface_modes: bitmask of interfaces types valid for this wiphy,
* must be set by driver
* @flags: wiphy flags, see &enum wiphy_flags
* @bss_priv_size: each BSS struct has private data allocated with it,
* this variable determines its size
* @max_scan_ssids: maximum number of SSIDs the device can scan for in
* any given scan
* @max_scan_ie_len: maximum length of user-controlled IEs device can
* add to probe request frames transmitted during a scan, must not
* include fixed IEs like supported rates
* @coverage_class: current coverage class
* @fw_version: firmware version for ethtool reporting
* @hw_version: hardware version for ethtool reporting
* @max_num_pmkids: maximum number of PMKIDs supported by device
* @privid: a pointer that drivers can use to identify if an arbitrary
* wiphy is theirs, e.g. in global notifiers
* @bands: information about bands/channels supported by this device
*
* @mgmt_stypes: bitmasks of frame subtypes that can be subscribed to or
* transmitted through nl80211, points to an array indexed by interface
* type
*
* @available_antennas_tx: bitmap of antennas which are available to be
* configured as TX antennas. Antenna configuration commands will be
* rejected unless this or @available_antennas_rx is set.
*
* @available_antennas_rx: bitmap of antennas which are available to be
* configured as RX antennas. Antenna configuration commands will be
* rejected unless this or @available_antennas_tx is set.
*
* @max_remain_on_channel_duration: Maximum time a remain-on-channel operation
* may request, if implemented.
*/
struct wiphy {
/* assign these fields before you register the wiphy */
/* permanent MAC address(es) */
u8 perm_addr[ETH_ALEN];
u8 addr_mask[ETH_ALEN];
struct mac_address *addresses;
const struct ieee80211_txrx_stypes *mgmt_stypes;
u16 n_addresses;
/* Supported interface modes, OR together BIT(NL80211_IFTYPE_...) */
u16 interface_modes;
u32 flags;
enum cfg80211_signal_type signal_type;
int bss_priv_size;
u8 max_scan_ssids;
u16 max_scan_ie_len;
int n_cipher_suites;
const u32 *cipher_suites;
u8 retry_short;
u8 retry_long;
u32 frag_threshold;
u32 rts_threshold;
u8 coverage_class;
char fw_version[ETHTOOL_BUSINFO_LEN];
u32 hw_version;
u16 max_remain_on_channel_duration;
u8 max_num_pmkids;
u32 available_antennas_tx;
u32 available_antennas_rx;
/* If multiple wiphys are registered and you're handed e.g.
* a regular netdev with assigned ieee80211_ptr, you won't
* know whether it points to a wiphy your driver has registered
* or not. Assign this to something global to your driver to
* help determine whether you own this wiphy or not. */
const void *privid;
struct ieee80211_supported_band *bands[IEEE80211_NUM_BANDS];
/* Lets us get back the wiphy on the callback */
int (*reg_notifier)(struct wiphy *wiphy,
struct regulatory_request *request);
/* fields below are read-only, assigned by cfg80211 */
const struct ieee80211_regdomain *regd;
/* the item in /sys/class/ieee80211/ points to this,
* you need use set_wiphy_dev() (see below) */
struct device dev;
/* dir in debugfs: ieee80211/<wiphyname> */
struct dentry *debugfsdir;
#ifdef CONFIG_NET_NS
/* the network namespace this phy lives in currently */
struct net *_net;
#endif
#ifdef CONFIG_CFG80211_WEXT
const struct iw_handler_def *wext;
#endif
char priv[0] __attribute__((__aligned__(NETDEV_ALIGN)));
};
static inline struct net *wiphy_net(struct wiphy *wiphy)
{
return read_pnet(&wiphy->_net);
}
static inline void wiphy_net_set(struct wiphy *wiphy, struct net *net)
{
write_pnet(&wiphy->_net, net);
}
/**
* wiphy_priv - return priv from wiphy
*
* @wiphy: the wiphy whose priv pointer to return
*/
static inline void *wiphy_priv(struct wiphy *wiphy)
{
BUG_ON(!wiphy);
return &wiphy->priv;
}
/**
* priv_to_wiphy - return the wiphy containing the priv
*
* @priv: a pointer previously returned by wiphy_priv
*/
static inline struct wiphy *priv_to_wiphy(void *priv)
{
BUG_ON(!priv);
return container_of(priv, struct wiphy, priv);
}
/**
* set_wiphy_dev - set device pointer for wiphy
*
* @wiphy: The wiphy whose device to bind
* @dev: The device to parent it to
*/
static inline void set_wiphy_dev(struct wiphy *wiphy, struct device *dev)
{
wiphy->dev.parent = dev;
}
/**
* wiphy_dev - get wiphy dev pointer
*
* @wiphy: The wiphy whose device struct to look up
*/
static inline struct device *wiphy_dev(struct wiphy *wiphy)
{
return wiphy->dev.parent;
}
/**
* wiphy_name - get wiphy name
*
* @wiphy: The wiphy whose name to return
*/
static inline const char *wiphy_name(const struct wiphy *wiphy)
{
return dev_name(&wiphy->dev);
}
/**
* wiphy_new - create a new wiphy for use with cfg80211
*
* @ops: The configuration operations for this device
* @sizeof_priv: The size of the private area to allocate
*
* Create a new wiphy and associate the given operations with it.
* @sizeof_priv bytes are allocated for private use.
*
* The returned pointer must be assigned to each netdev's
* ieee80211_ptr for proper operation.
*/
struct wiphy *wiphy_new(const struct cfg80211_ops *ops, int sizeof_priv);
/**
* wiphy_register - register a wiphy with cfg80211
*
* @wiphy: The wiphy to register.
*
* Returns a non-negative wiphy index or a negative error code.
*/
extern int wiphy_register(struct wiphy *wiphy);
/**
* wiphy_unregister - deregister a wiphy from cfg80211
*
* @wiphy: The wiphy to unregister.
*
* After this call, no more requests can be made with this priv
* pointer, but the call may sleep to wait for an outstanding
* request that is being handled.
*/
extern void wiphy_unregister(struct wiphy *wiphy);
/**
* wiphy_free - free wiphy
*
* @wiphy: The wiphy to free
*/
extern void wiphy_free(struct wiphy *wiphy);
/* internal structs */
struct cfg80211_conn;
struct cfg80211_internal_bss;
struct cfg80211_cached_keys;
#define MAX_AUTH_BSSES 4
/**
* struct wireless_dev - wireless per-netdev state
*
* This structure must be allocated by the driver/stack
* that uses the ieee80211_ptr field in struct net_device
* (this is intentional so it can be allocated along with
* the netdev.)
*
* @wiphy: pointer to hardware description
* @iftype: interface type
* @list: (private) Used to collect the interfaces
* @netdev: (private) Used to reference back to the netdev
* @current_bss: (private) Used by the internal configuration code
* @channel: (private) Used by the internal configuration code to track
* user-set AP, monitor and WDS channels for wireless extensions
* @bssid: (private) Used by the internal configuration code
* @ssid: (private) Used by the internal configuration code
* @ssid_len: (private) Used by the internal configuration code
* @mesh_id_len: (private) Used by the internal configuration code
* @mesh_id_up_len: (private) Used by the internal configuration code
* @wext: (private) Used by the internal wireless extensions compat code
* @use_4addr: indicates 4addr mode is used on this interface, must be
* set by driver (if supported) on add_interface BEFORE registering the
* netdev and may otherwise be used by driver read-only, will be update
* by cfg80211 on change_interface
* @mgmt_registrations: list of registrations for management frames
* @mgmt_registrations_lock: lock for the list
* @mtx: mutex used to lock data in this struct
* @cleanup_work: work struct used for cleanup that can't be done directly
*/
struct wireless_dev {
struct wiphy *wiphy;
enum nl80211_iftype iftype;
/* the remainder of this struct should be private to cfg80211 */
struct list_head list;
struct net_device *netdev;
struct list_head mgmt_registrations;
spinlock_t mgmt_registrations_lock;
struct mutex mtx;
struct work_struct cleanup_work;
bool use_4addr;
/* currently used for IBSS and SME - might be rearranged later */
u8 ssid[IEEE80211_MAX_SSID_LEN];
u8 ssid_len, mesh_id_len, mesh_id_up_len;
enum {
CFG80211_SME_IDLE,
CFG80211_SME_CONNECTING,
CFG80211_SME_CONNECTED,
} sme_state;
struct cfg80211_conn *conn;
struct cfg80211_cached_keys *connect_keys;
struct list_head event_list;
spinlock_t event_lock;
struct cfg80211_internal_bss *authtry_bsses[MAX_AUTH_BSSES];
struct cfg80211_internal_bss *auth_bsses[MAX_AUTH_BSSES];
struct cfg80211_internal_bss *current_bss; /* associated / joined */
struct ieee80211_channel *channel;
bool ps;
int ps_timeout;
#ifdef CONFIG_CFG80211_WEXT
/* wext data */
struct {
struct cfg80211_ibss_params ibss;
struct cfg80211_connect_params connect;
struct cfg80211_cached_keys *keys;
u8 *ie;
size_t ie_len;
u8 bssid[ETH_ALEN], prev_bssid[ETH_ALEN];
u8 ssid[IEEE80211_MAX_SSID_LEN];
s8 default_key, default_mgmt_key;
bool prev_bssid_valid;
} wext;
#endif
};
/**
* wdev_priv - return wiphy priv from wireless_dev
*
* @wdev: The wireless device whose wiphy's priv pointer to return
*/
static inline void *wdev_priv(struct wireless_dev *wdev)
{
BUG_ON(!wdev);
return wiphy_priv(wdev->wiphy);
}
/**
* DOC: Utility functions
*
* cfg80211 offers a number of utility functions that can be useful.
*/
/**
* ieee80211_channel_to_frequency - convert channel number to frequency
* @chan: channel number
* @band: band, necessary due to channel number overlap
*/
extern int ieee80211_channel_to_frequency(int chan, enum ieee80211_band band);
/**
* ieee80211_frequency_to_channel - convert frequency to channel number
* @freq: center frequency
*/
extern int ieee80211_frequency_to_channel(int freq);
/*
* Name indirection necessary because the ieee80211 code also has
* a function named "ieee80211_get_channel", so if you include
* cfg80211's header file you get cfg80211's version, if you try
* to include both header files you'll (rightfully!) get a symbol
* clash.
*/
extern struct ieee80211_channel *__ieee80211_get_channel(struct wiphy *wiphy,
int freq);
/**
* ieee80211_get_channel - get channel struct from wiphy for specified frequency
* @wiphy: the struct wiphy to get the channel for
* @freq: the center frequency of the channel
*/
static inline struct ieee80211_channel *
ieee80211_get_channel(struct wiphy *wiphy, int freq)
{
return __ieee80211_get_channel(wiphy, freq);
}
/**
* ieee80211_get_response_rate - get basic rate for a given rate
*
* @sband: the band to look for rates in
* @basic_rates: bitmap of basic rates
* @bitrate: the bitrate for which to find the basic rate
*
* This function returns the basic rate corresponding to a given
* bitrate, that is the next lower bitrate contained in the basic
* rate map, which is, for this function, given as a bitmap of
* indices of rates in the band's bitrate table.
*/
struct ieee80211_rate *
ieee80211_get_response_rate(struct ieee80211_supported_band *sband,
u32 basic_rates, int bitrate);
/*
* Radiotap parsing functions -- for controlled injection support
*
* Implemented in net/wireless/radiotap.c
* Documentation in Documentation/networking/radiotap-headers.txt
*/
struct radiotap_align_size {
uint8_t align:4, size:4;
};
struct ieee80211_radiotap_namespace {
const struct radiotap_align_size *align_size;
int n_bits;
uint32_t oui;
uint8_t subns;
};
struct ieee80211_radiotap_vendor_namespaces {
const struct ieee80211_radiotap_namespace *ns;
int n_ns;
};
/**
* struct ieee80211_radiotap_iterator - tracks walk thru present radiotap args
* @this_arg_index: index of current arg, valid after each successful call
* to ieee80211_radiotap_iterator_next()
* @this_arg: pointer to current radiotap arg; it is valid after each
* call to ieee80211_radiotap_iterator_next() but also after
* ieee80211_radiotap_iterator_init() where it will point to
* the beginning of the actual data portion
* @this_arg_size: length of the current arg, for convenience
* @current_namespace: pointer to the current namespace definition
* (or internally %NULL if the current namespace is unknown)
* @is_radiotap_ns: indicates whether the current namespace is the default
* radiotap namespace or not
*
* @_rtheader: pointer to the radiotap header we are walking through
* @_max_length: length of radiotap header in cpu byte ordering
* @_arg_index: next argument index
* @_arg: next argument pointer
* @_next_bitmap: internal pointer to next present u32
* @_bitmap_shifter: internal shifter for curr u32 bitmap, b0 set == arg present
* @_vns: vendor namespace definitions
* @_next_ns_data: beginning of the next namespace's data
* @_reset_on_ext: internal; reset the arg index to 0 when going to the
* next bitmap word
*
* Describes the radiotap parser state. Fields prefixed with an underscore
* must not be used by users of the parser, only by the parser internally.
*/
struct ieee80211_radiotap_iterator {
struct ieee80211_radiotap_header *_rtheader;
const struct ieee80211_radiotap_vendor_namespaces *_vns;
const struct ieee80211_radiotap_namespace *current_namespace;
unsigned char *_arg, *_next_ns_data;
__le32 *_next_bitmap;
unsigned char *this_arg;
int this_arg_index;
int this_arg_size;
int is_radiotap_ns;
int _max_length;
int _arg_index;
uint32_t _bitmap_shifter;
int _reset_on_ext;
};
extern int ieee80211_radiotap_iterator_init(
struct ieee80211_radiotap_iterator *iterator,
struct ieee80211_radiotap_header *radiotap_header,
int max_length, const struct ieee80211_radiotap_vendor_namespaces *vns);
extern int ieee80211_radiotap_iterator_next(
struct ieee80211_radiotap_iterator *iterator);
extern const unsigned char rfc1042_header[6];
extern const unsigned char bridge_tunnel_header[6];
/**
* ieee80211_get_hdrlen_from_skb - get header length from data
*
* Given an skb with a raw 802.11 header at the data pointer this function
* returns the 802.11 header length in bytes (not including encryption
* headers). If the data in the sk_buff is too short to contain a valid 802.11
* header the function returns 0.
*
* @skb: the frame
*/
unsigned int ieee80211_get_hdrlen_from_skb(const struct sk_buff *skb);
/**
* ieee80211_hdrlen - get header length in bytes from frame control
* @fc: frame control field in little-endian format
*/
unsigned int __attribute_const__ ieee80211_hdrlen(__le16 fc);
/**
* DOC: Data path helpers
*
* In addition to generic utilities, cfg80211 also offers
* functions that help implement the data path for devices
* that do not do the 802.11/802.3 conversion on the device.
*/
/**
* ieee80211_data_to_8023 - convert an 802.11 data frame to 802.3
* @skb: the 802.11 data frame
* @addr: the device MAC address
* @iftype: the virtual interface type
*/
int ieee80211_data_to_8023(struct sk_buff *skb, const u8 *addr,
enum nl80211_iftype iftype);
/**
* ieee80211_data_from_8023 - convert an 802.3 frame to 802.11
* @skb: the 802.3 frame
* @addr: the device MAC address
* @iftype: the virtual interface type
* @bssid: the network bssid (used only for iftype STATION and ADHOC)
* @qos: build 802.11 QoS data frame
*/
int ieee80211_data_from_8023(struct sk_buff *skb, const u8 *addr,
enum nl80211_iftype iftype, u8 *bssid, bool qos);
/**
* ieee80211_amsdu_to_8023s - decode an IEEE 802.11n A-MSDU frame
*
* Decode an IEEE 802.11n A-MSDU frame and convert it to a list of
* 802.3 frames. The @list will be empty if the decode fails. The
* @skb is consumed after the function returns.
*
* @skb: The input IEEE 802.11n A-MSDU frame.
* @list: The output list of 802.3 frames. It must be allocated and
* initialized by by the caller.
* @addr: The device MAC address.
* @iftype: The device interface type.
* @extra_headroom: The hardware extra headroom for SKBs in the @list.
*/
void ieee80211_amsdu_to_8023s(struct sk_buff *skb, struct sk_buff_head *list,
const u8 *addr, enum nl80211_iftype iftype,
const unsigned int extra_headroom);
/**
* cfg80211_classify8021d - determine the 802.1p/1d tag for a data frame
* @skb: the data frame
*/
unsigned int cfg80211_classify8021d(struct sk_buff *skb);
/**
* cfg80211_find_ie - find information element in data
*
* @eid: element ID
* @ies: data consisting of IEs
* @len: length of data
*
* This function will return %NULL if the element ID could
* not be found or if the element is invalid (claims to be
* longer than the given data), or a pointer to the first byte
* of the requested element, that is the byte containing the
* element ID. There are no checks on the element length
* other than having to fit into the given data.
*/
const u8 *cfg80211_find_ie(u8 eid, const u8 *ies, int len);
/**
* DOC: Regulatory enforcement infrastructure
*
* TODO
*/
/**
* regulatory_hint - driver hint to the wireless core a regulatory domain
* @wiphy: the wireless device giving the hint (used only for reporting
* conflicts)
* @alpha2: the ISO/IEC 3166 alpha2 the driver claims its regulatory domain
* should be in. If @rd is set this should be NULL. Note that if you
* set this to NULL you should still set rd->alpha2 to some accepted
* alpha2.
*
* Wireless drivers can use this function to hint to the wireless core
* what it believes should be the current regulatory domain by
* giving it an ISO/IEC 3166 alpha2 country code it knows its regulatory
* domain should be in or by providing a completely build regulatory domain.
* If the driver provides an ISO/IEC 3166 alpha2 userspace will be queried
* for a regulatory domain structure for the respective country.
*
* The wiphy must have been registered to cfg80211 prior to this call.
* For cfg80211 drivers this means you must first use wiphy_register(),
* for mac80211 drivers you must first use ieee80211_register_hw().
*
* Drivers should check the return value, its possible you can get
* an -ENOMEM.
*/
extern int regulatory_hint(struct wiphy *wiphy, const char *alpha2);
/**
* wiphy_apply_custom_regulatory - apply a custom driver regulatory domain
* @wiphy: the wireless device we want to process the regulatory domain on
* @regd: the custom regulatory domain to use for this wiphy
*
* Drivers can sometimes have custom regulatory domains which do not apply
* to a specific country. Drivers can use this to apply such custom regulatory
* domains. This routine must be called prior to wiphy registration. The
* custom regulatory domain will be trusted completely and as such previous
* default channel settings will be disregarded. If no rule is found for a
* channel on the regulatory domain the channel will be disabled.
*/
extern void wiphy_apply_custom_regulatory(
struct wiphy *wiphy,
const struct ieee80211_regdomain *regd);
/**
* freq_reg_info - get regulatory information for the given frequency
* @wiphy: the wiphy for which we want to process this rule for
* @center_freq: Frequency in KHz for which we want regulatory information for
* @desired_bw_khz: the desired max bandwidth you want to use per
* channel. Note that this is still 20 MHz if you want to use HT40
* as HT40 makes use of two channels for its 40 MHz width bandwidth.
* If set to 0 we'll assume you want the standard 20 MHz.
* @reg_rule: the regulatory rule which we have for this frequency
*
* Use this function to get the regulatory rule for a specific frequency on
* a given wireless device. If the device has a specific regulatory domain
* it wants to follow we respect that unless a country IE has been received
* and processed already.
*
* Returns 0 if it was able to find a valid regulatory rule which does
* apply to the given center_freq otherwise it returns non-zero. It will
* also return -ERANGE if we determine the given center_freq does not even have
* a regulatory rule for a frequency range in the center_freq's band. See
* freq_in_rule_band() for our current definition of a band -- this is purely
* subjective and right now its 802.11 specific.
*/
extern int freq_reg_info(struct wiphy *wiphy,
u32 center_freq,
u32 desired_bw_khz,
const struct ieee80211_reg_rule **reg_rule);
/*
* Temporary wext handlers & helper functions
*
* In the future cfg80211 will simply assign the entire wext handler
* structure to netdevs it manages, but we're not there yet.
*/
int cfg80211_wext_giwname(struct net_device *dev,
struct iw_request_info *info,
char *name, char *extra);
int cfg80211_wext_siwmode(struct net_device *dev, struct iw_request_info *info,
u32 *mode, char *extra);
int cfg80211_wext_giwmode(struct net_device *dev, struct iw_request_info *info,
u32 *mode, char *extra);
int cfg80211_wext_siwscan(struct net_device *dev,
struct iw_request_info *info,
union iwreq_data *wrqu, char *extra);
int cfg80211_wext_giwscan(struct net_device *dev,
struct iw_request_info *info,
struct iw_point *data, char *extra);
int cfg80211_wext_siwmlme(struct net_device *dev,
struct iw_request_info *info,
struct iw_point *data, char *extra);
int cfg80211_wext_giwrange(struct net_device *dev,
struct iw_request_info *info,
struct iw_point *data, char *extra);
int cfg80211_wext_siwgenie(struct net_device *dev,
struct iw_request_info *info,
struct iw_point *data, char *extra);
int cfg80211_wext_siwauth(struct net_device *dev,
struct iw_request_info *info,
struct iw_param *data, char *extra);
int cfg80211_wext_giwauth(struct net_device *dev,
struct iw_request_info *info,
struct iw_param *data, char *extra);
int cfg80211_wext_siwfreq(struct net_device *dev,
struct iw_request_info *info,
struct iw_freq *freq, char *extra);
int cfg80211_wext_giwfreq(struct net_device *dev,
struct iw_request_info *info,
struct iw_freq *freq, char *extra);
int cfg80211_wext_siwessid(struct net_device *dev,
struct iw_request_info *info,
struct iw_point *data, char *ssid);
int cfg80211_wext_giwessid(struct net_device *dev,
struct iw_request_info *info,
struct iw_point *data, char *ssid);
int cfg80211_wext_siwrate(struct net_device *dev,
struct iw_request_info *info,
struct iw_param *rate, char *extra);
int cfg80211_wext_giwrate(struct net_device *dev,
struct iw_request_info *info,
struct iw_param *rate, char *extra);
int cfg80211_wext_siwrts(struct net_device *dev,
struct iw_request_info *info,
struct iw_param *rts, char *extra);
int cfg80211_wext_giwrts(struct net_device *dev,
struct iw_request_info *info,
struct iw_param *rts, char *extra);
int cfg80211_wext_siwfrag(struct net_device *dev,
struct iw_request_info *info,
struct iw_param *frag, char *extra);
int cfg80211_wext_giwfrag(struct net_device *dev,
struct iw_request_info *info,
struct iw_param *frag, char *extra);
int cfg80211_wext_siwretry(struct net_device *dev,
struct iw_request_info *info,
struct iw_param *retry, char *extra);
int cfg80211_wext_giwretry(struct net_device *dev,
struct iw_request_info *info,
struct iw_param *retry, char *extra);
int cfg80211_wext_siwencodeext(struct net_device *dev,
struct iw_request_info *info,
struct iw_point *erq, char *extra);
int cfg80211_wext_siwencode(struct net_device *dev,
struct iw_request_info *info,
struct iw_point *erq, char *keybuf);
int cfg80211_wext_giwencode(struct net_device *dev,
struct iw_request_info *info,
struct iw_point *erq, char *keybuf);
int cfg80211_wext_siwtxpower(struct net_device *dev,
struct iw_request_info *info,
union iwreq_data *data, char *keybuf);
int cfg80211_wext_giwtxpower(struct net_device *dev,
struct iw_request_info *info,
union iwreq_data *data, char *keybuf);
struct iw_statistics *cfg80211_wireless_stats(struct net_device *dev);
int cfg80211_wext_siwpower(struct net_device *dev,
struct iw_request_info *info,
struct iw_param *wrq, char *extra);
int cfg80211_wext_giwpower(struct net_device *dev,
struct iw_request_info *info,
struct iw_param *wrq, char *extra);
int cfg80211_wext_siwap(struct net_device *dev,
struct iw_request_info *info,
struct sockaddr *ap_addr, char *extra);
int cfg80211_wext_giwap(struct net_device *dev,
struct iw_request_info *info,
struct sockaddr *ap_addr, char *extra);
int cfg80211_wext_siwpmksa(struct net_device *dev,
struct iw_request_info *info,
struct iw_point *data, char *extra);
/*
* callbacks for asynchronous cfg80211 methods, notification
* functions and BSS handling helpers
*/
/**
* cfg80211_scan_done - notify that scan finished
*
* @request: the corresponding scan request
* @aborted: set to true if the scan was aborted for any reason,
* userspace will be notified of that
*/
void cfg80211_scan_done(struct cfg80211_scan_request *request, bool aborted);
/**
* cfg80211_inform_bss_frame - inform cfg80211 of a received BSS frame
*
* @wiphy: the wiphy reporting the BSS
* @channel: The channel the frame was received on
* @mgmt: the management frame (probe response or beacon)
* @len: length of the management frame
* @signal: the signal strength, type depends on the wiphy's signal_type
* @gfp: context flags
*
* This informs cfg80211 that BSS information was found and
* the BSS should be updated/added.
*/
struct cfg80211_bss*
cfg80211_inform_bss_frame(struct wiphy *wiphy,
struct ieee80211_channel *channel,
struct ieee80211_mgmt *mgmt, size_t len,
s32 signal, gfp_t gfp);
/**
* cfg80211_inform_bss - inform cfg80211 of a new BSS
*
* @wiphy: the wiphy reporting the BSS
* @channel: The channel the frame was received on
* @bssid: the BSSID of the BSS
* @timestamp: the TSF timestamp sent by the peer
* @capability: the capability field sent by the peer
* @beacon_interval: the beacon interval announced by the peer
* @ie: additional IEs sent by the peer
* @ielen: length of the additional IEs
* @signal: the signal strength, type depends on the wiphy's signal_type
* @gfp: context flags
*
* This informs cfg80211 that BSS information was found and
* the BSS should be updated/added.
*/
struct cfg80211_bss*
cfg80211_inform_bss(struct wiphy *wiphy,
struct ieee80211_channel *channel,
const u8 *bssid,
u64 timestamp, u16 capability, u16 beacon_interval,
const u8 *ie, size_t ielen,
s32 signal, gfp_t gfp);
struct cfg80211_bss *cfg80211_get_bss(struct wiphy *wiphy,
struct ieee80211_channel *channel,
const u8 *bssid,
const u8 *ssid, size_t ssid_len,
u16 capa_mask, u16 capa_val);
static inline struct cfg80211_bss *
cfg80211_get_ibss(struct wiphy *wiphy,
struct ieee80211_channel *channel,
const u8 *ssid, size_t ssid_len)
{
return cfg80211_get_bss(wiphy, channel, NULL, ssid, ssid_len,
WLAN_CAPABILITY_IBSS, WLAN_CAPABILITY_IBSS);
}
struct cfg80211_bss *cfg80211_get_mesh(struct wiphy *wiphy,
struct ieee80211_channel *channel,
const u8 *meshid, size_t meshidlen,
const u8 *meshcfg);
void cfg80211_put_bss(struct cfg80211_bss *bss);
/**
* cfg80211_unlink_bss - unlink BSS from internal data structures
* @wiphy: the wiphy
* @bss: the bss to remove
*
* This function removes the given BSS from the internal data structures
* thereby making it no longer show up in scan results etc. Use this
* function when you detect a BSS is gone. Normally BSSes will also time
* out, so it is not necessary to use this function at all.
*/
void cfg80211_unlink_bss(struct wiphy *wiphy, struct cfg80211_bss *bss);
/**
* cfg80211_send_rx_auth - notification of processed authentication
* @dev: network device
* @buf: authentication frame (header + body)
* @len: length of the frame data
*
* This function is called whenever an authentication has been processed in
* station mode. The driver is required to call either this function or
* cfg80211_send_auth_timeout() to indicate the result of cfg80211_ops::auth()
* call. This function may sleep.
*/
void cfg80211_send_rx_auth(struct net_device *dev, const u8 *buf, size_t len);
/**
* cfg80211_send_auth_timeout - notification of timed out authentication
* @dev: network device
* @addr: The MAC address of the device with which the authentication timed out
*
* This function may sleep.
*/
void cfg80211_send_auth_timeout(struct net_device *dev, const u8 *addr);
/**
* __cfg80211_auth_canceled - notify cfg80211 that authentication was canceled
* @dev: network device
* @addr: The MAC address of the device with which the authentication timed out
*
* When a pending authentication had no action yet, the driver may decide
* to not send a deauth frame, but in that case must calls this function
* to tell cfg80211 about this decision. It is only valid to call this
* function within the deauth() callback.
*/
void __cfg80211_auth_canceled(struct net_device *dev, const u8 *addr);
/**
* cfg80211_send_rx_assoc - notification of processed association
* @dev: network device
* @buf: (re)association response frame (header + body)
* @len: length of the frame data
*
* This function is called whenever a (re)association response has been
* processed in station mode. The driver is required to call either this
* function or cfg80211_send_assoc_timeout() to indicate the result of
* cfg80211_ops::assoc() call. This function may sleep.
*/
void cfg80211_send_rx_assoc(struct net_device *dev, const u8 *buf, size_t len);
/**
* cfg80211_send_assoc_timeout - notification of timed out association
* @dev: network device
* @addr: The MAC address of the device with which the association timed out
*
* This function may sleep.
*/
void cfg80211_send_assoc_timeout(struct net_device *dev, const u8 *addr);
/**
* cfg80211_send_deauth - notification of processed deauthentication
* @dev: network device
* @buf: deauthentication frame (header + body)
* @len: length of the frame data
*
* This function is called whenever deauthentication has been processed in
* station mode. This includes both received deauthentication frames and
* locally generated ones. This function may sleep.
*/
void cfg80211_send_deauth(struct net_device *dev, const u8 *buf, size_t len);
/**
* __cfg80211_send_deauth - notification of processed deauthentication
* @dev: network device
* @buf: deauthentication frame (header + body)
* @len: length of the frame data
*
* Like cfg80211_send_deauth(), but doesn't take the wdev lock.
*/
void __cfg80211_send_deauth(struct net_device *dev, const u8 *buf, size_t len);
/**
* cfg80211_send_disassoc - notification of processed disassociation
* @dev: network device
* @buf: disassociation response frame (header + body)
* @len: length of the frame data
*
* This function is called whenever disassociation has been processed in
* station mode. This includes both received disassociation frames and locally
* generated ones. This function may sleep.
*/
void cfg80211_send_disassoc(struct net_device *dev, const u8 *buf, size_t len);
/**
* __cfg80211_send_disassoc - notification of processed disassociation
* @dev: network device
* @buf: disassociation response frame (header + body)
* @len: length of the frame data
*
* Like cfg80211_send_disassoc(), but doesn't take the wdev lock.
*/
void __cfg80211_send_disassoc(struct net_device *dev, const u8 *buf,
size_t len);
/**
* cfg80211_send_unprot_deauth - notification of unprotected deauthentication
* @dev: network device
* @buf: deauthentication frame (header + body)
* @len: length of the frame data
*
* This function is called whenever a received Deauthentication frame has been
* dropped in station mode because of MFP being used but the Deauthentication
* frame was not protected. This function may sleep.
*/
void cfg80211_send_unprot_deauth(struct net_device *dev, const u8 *buf,
size_t len);
/**
* cfg80211_send_unprot_disassoc - notification of unprotected disassociation
* @dev: network device
* @buf: disassociation frame (header + body)
* @len: length of the frame data
*
* This function is called whenever a received Disassociation frame has been
* dropped in station mode because of MFP being used but the Disassociation
* frame was not protected. This function may sleep.
*/
void cfg80211_send_unprot_disassoc(struct net_device *dev, const u8 *buf,
size_t len);
/**
* cfg80211_michael_mic_failure - notification of Michael MIC failure (TKIP)
* @dev: network device
* @addr: The source MAC address of the frame
* @key_type: The key type that the received frame used
* @key_id: Key identifier (0..3)
* @tsc: The TSC value of the frame that generated the MIC failure (6 octets)
* @gfp: allocation flags
*
* This function is called whenever the local MAC detects a MIC failure in a
* received frame. This matches with MLME-MICHAELMICFAILURE.indication()
* primitive.
*/
void cfg80211_michael_mic_failure(struct net_device *dev, const u8 *addr,
enum nl80211_key_type key_type, int key_id,
const u8 *tsc, gfp_t gfp);
/**
* cfg80211_ibss_joined - notify cfg80211 that device joined an IBSS
*
* @dev: network device
* @bssid: the BSSID of the IBSS joined
* @gfp: allocation flags
*
* This function notifies cfg80211 that the device joined an IBSS or
* switched to a different BSSID. Before this function can be called,
* either a beacon has to have been received from the IBSS, or one of
* the cfg80211_inform_bss{,_frame} functions must have been called
* with the locally generated beacon -- this guarantees that there is
* always a scan result for this IBSS. cfg80211 will handle the rest.
*/
void cfg80211_ibss_joined(struct net_device *dev, const u8 *bssid, gfp_t gfp);
/**
* DOC: RFkill integration
*
* RFkill integration in cfg80211 is almost invisible to drivers,
* as cfg80211 automatically registers an rfkill instance for each
* wireless device it knows about. Soft kill is also translated
* into disconnecting and turning all interfaces off, drivers are
* expected to turn off the device when all interfaces are down.
*
* However, devices may have a hard RFkill line, in which case they
* also need to interact with the rfkill subsystem, via cfg80211.
* They can do this with a few helper functions documented here.
*/
/**
* wiphy_rfkill_set_hw_state - notify cfg80211 about hw block state
* @wiphy: the wiphy
* @blocked: block status
*/
void wiphy_rfkill_set_hw_state(struct wiphy *wiphy, bool blocked);
/**
* wiphy_rfkill_start_polling - start polling rfkill
* @wiphy: the wiphy
*/
void wiphy_rfkill_start_polling(struct wiphy *wiphy);
/**
* wiphy_rfkill_stop_polling - stop polling rfkill
* @wiphy: the wiphy
*/
void wiphy_rfkill_stop_polling(struct wiphy *wiphy);
#ifdef CONFIG_NL80211_TESTMODE
/**
* DOC: Test mode
*
* Test mode is a set of utility functions to allow drivers to
* interact with driver-specific tools to aid, for instance,
* factory programming.
*
* This chapter describes how drivers interact with it, for more
* information see the nl80211 book's chapter on it.
*/
/**
* cfg80211_testmode_alloc_reply_skb - allocate testmode reply
* @wiphy: the wiphy
* @approxlen: an upper bound of the length of the data that will
* be put into the skb
*
* This function allocates and pre-fills an skb for a reply to
* the testmode command. Since it is intended for a reply, calling
* it outside of the @testmode_cmd operation is invalid.
*
* The returned skb (or %NULL if any errors happen) is pre-filled
* with the wiphy index and set up in a way that any data that is
* put into the skb (with skb_put(), nla_put() or similar) will end
* up being within the %NL80211_ATTR_TESTDATA attribute, so all that
* needs to be done with the skb is adding data for the corresponding
* userspace tool which can then read that data out of the testdata
* attribute. You must not modify the skb in any other way.
*
* When done, call cfg80211_testmode_reply() with the skb and return
* its error code as the result of the @testmode_cmd operation.
*/
struct sk_buff *cfg80211_testmode_alloc_reply_skb(struct wiphy *wiphy,
int approxlen);
/**
* cfg80211_testmode_reply - send the reply skb
* @skb: The skb, must have been allocated with
* cfg80211_testmode_alloc_reply_skb()
*
* Returns an error code or 0 on success, since calling this
* function will usually be the last thing before returning
* from the @testmode_cmd you should return the error code.
* Note that this function consumes the skb regardless of the
* return value.
*/
int cfg80211_testmode_reply(struct sk_buff *skb);
/**
* cfg80211_testmode_alloc_event_skb - allocate testmode event
* @wiphy: the wiphy
* @approxlen: an upper bound of the length of the data that will
* be put into the skb
* @gfp: allocation flags
*
* This function allocates and pre-fills an skb for an event on the
* testmode multicast group.
*
* The returned skb (or %NULL if any errors happen) is set up in the
* same way as with cfg80211_testmode_alloc_reply_skb() but prepared
* for an event. As there, you should simply add data to it that will
* then end up in the %NL80211_ATTR_TESTDATA attribute. Again, you must
* not modify the skb in any other way.
*
* When done filling the skb, call cfg80211_testmode_event() with the
* skb to send the event.
*/
struct sk_buff *cfg80211_testmode_alloc_event_skb(struct wiphy *wiphy,
int approxlen, gfp_t gfp);
/**
* cfg80211_testmode_event - send the event
* @skb: The skb, must have been allocated with
* cfg80211_testmode_alloc_event_skb()
* @gfp: allocation flags
*
* This function sends the given @skb, which must have been allocated
* by cfg80211_testmode_alloc_event_skb(), as an event. It always
* consumes it.
*/
void cfg80211_testmode_event(struct sk_buff *skb, gfp_t gfp);
#define CFG80211_TESTMODE_CMD(cmd) .testmode_cmd = (cmd),
#else
#define CFG80211_TESTMODE_CMD(cmd)
#endif
/**
* cfg80211_connect_result - notify cfg80211 of connection result
*
* @dev: network device
* @bssid: the BSSID of the AP
* @req_ie: association request IEs (maybe be %NULL)
* @req_ie_len: association request IEs length
* @resp_ie: association response IEs (may be %NULL)
* @resp_ie_len: assoc response IEs length
* @status: status code, 0 for successful connection, use
* %WLAN_STATUS_UNSPECIFIED_FAILURE if your device cannot give you
* the real status code for failures.
* @gfp: allocation flags
*
* It should be called by the underlying driver whenever connect() has
* succeeded.
*/
void cfg80211_connect_result(struct net_device *dev, const u8 *bssid,
const u8 *req_ie, size_t req_ie_len,
const u8 *resp_ie, size_t resp_ie_len,
u16 status, gfp_t gfp);
/**
* cfg80211_roamed - notify cfg80211 of roaming
*
* @dev: network device
* @bssid: the BSSID of the new AP
* @req_ie: association request IEs (maybe be %NULL)
* @req_ie_len: association request IEs length
* @resp_ie: association response IEs (may be %NULL)
* @resp_ie_len: assoc response IEs length
* @gfp: allocation flags
*
* It should be called by the underlying driver whenever it roamed
* from one AP to another while connected.
*/
void cfg80211_roamed(struct net_device *dev, const u8 *bssid,
const u8 *req_ie, size_t req_ie_len,
const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp);
/**
* cfg80211_disconnected - notify cfg80211 that connection was dropped
*
* @dev: network device
* @ie: information elements of the deauth/disassoc frame (may be %NULL)
* @ie_len: length of IEs
* @reason: reason code for the disconnection, set it to 0 if unknown
* @gfp: allocation flags
*
* After it calls this function, the driver should enter an idle state
* and not try to connect to any AP any more.
*/
void cfg80211_disconnected(struct net_device *dev, u16 reason,
u8 *ie, size_t ie_len, gfp_t gfp);
/**
* cfg80211_ready_on_channel - notification of remain_on_channel start
* @dev: network device
* @cookie: the request cookie
* @chan: The current channel (from remain_on_channel request)
* @channel_type: Channel type
* @duration: Duration in milliseconds that the driver intents to remain on the
* channel
* @gfp: allocation flags
*/
void cfg80211_ready_on_channel(struct net_device *dev, u64 cookie,
struct ieee80211_channel *chan,
enum nl80211_channel_type channel_type,
unsigned int duration, gfp_t gfp);
/**
* cfg80211_remain_on_channel_expired - remain_on_channel duration expired
* @dev: network device
* @cookie: the request cookie
* @chan: The current channel (from remain_on_channel request)
* @channel_type: Channel type
* @gfp: allocation flags
*/
void cfg80211_remain_on_channel_expired(struct net_device *dev,
u64 cookie,
struct ieee80211_channel *chan,
enum nl80211_channel_type channel_type,
gfp_t gfp);
/**
* cfg80211_new_sta - notify userspace about station
*
* @dev: the netdev
* @mac_addr: the station's address
* @sinfo: the station information
* @gfp: allocation flags
*/
void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
struct station_info *sinfo, gfp_t gfp);
/**
* cfg80211_rx_mgmt - notification of received, unprocessed management frame
* @dev: network device
* @freq: Frequency on which the frame was received in MHz
* @buf: Management frame (header + body)
* @len: length of the frame data
* @gfp: context flags
*
* Returns %true if a user space application has registered for this frame.
* For action frames, that makes it responsible for rejecting unrecognized
* action frames; %false otherwise, in which case for action frames the
* driver is responsible for rejecting the frame.
*
* This function is called whenever an Action frame is received for a station
* mode interface, but is not processed in kernel.
*/
bool cfg80211_rx_mgmt(struct net_device *dev, int freq, const u8 *buf,
size_t len, gfp_t gfp);
/**
* cfg80211_mgmt_tx_status - notification of TX status for management frame
* @dev: network device
* @cookie: Cookie returned by cfg80211_ops::mgmt_tx()
* @buf: Management frame (header + body)
* @len: length of the frame data
* @ack: Whether frame was acknowledged
* @gfp: context flags
*
* This function is called whenever a management frame was requested to be
* transmitted with cfg80211_ops::mgmt_tx() to report the TX status of the
* transmission attempt.
*/
void cfg80211_mgmt_tx_status(struct net_device *dev, u64 cookie,
const u8 *buf, size_t len, bool ack, gfp_t gfp);
/**
* cfg80211_cqm_rssi_notify - connection quality monitoring rssi event
* @dev: network device
* @rssi_event: the triggered RSSI event
* @gfp: context flags
*
* This function is called when a configured connection quality monitoring
* rssi threshold reached event occurs.
*/
void cfg80211_cqm_rssi_notify(struct net_device *dev,
enum nl80211_cqm_rssi_threshold_event rssi_event,
gfp_t gfp);
/**
* cfg80211_cqm_pktloss_notify - notify userspace about packetloss to peer
* @dev: network device
* @peer: peer's MAC address
* @num_packets: how many packets were lost -- should be a fixed threshold
* but probably no less than maybe 50, or maybe a throughput dependent
* threshold (to account for temporary interference)
* @gfp: context flags
*/
void cfg80211_cqm_pktloss_notify(struct net_device *dev,
const u8 *peer, u32 num_packets, gfp_t gfp);
/* Logging, debugging and troubleshooting/diagnostic helpers. */
/* wiphy_printk helpers, similar to dev_printk */
#define wiphy_printk(level, wiphy, format, args...) \
dev_printk(level, &(wiphy)->dev, format, ##args)
#define wiphy_emerg(wiphy, format, args...) \
dev_emerg(&(wiphy)->dev, format, ##args)
#define wiphy_alert(wiphy, format, args...) \
dev_alert(&(wiphy)->dev, format, ##args)
#define wiphy_crit(wiphy, format, args...) \
dev_crit(&(wiphy)->dev, format, ##args)
#define wiphy_err(wiphy, format, args...) \
dev_err(&(wiphy)->dev, format, ##args)
#define wiphy_warn(wiphy, format, args...) \
dev_warn(&(wiphy)->dev, format, ##args)
#define wiphy_notice(wiphy, format, args...) \
dev_notice(&(wiphy)->dev, format, ##args)
#define wiphy_info(wiphy, format, args...) \
dev_info(&(wiphy)->dev, format, ##args)
#define wiphy_debug(wiphy, format, args...) \
wiphy_printk(KERN_DEBUG, wiphy, format, ##args)
#define wiphy_dbg(wiphy, format, args...) \
dev_dbg(&(wiphy)->dev, format, ##args)
#if defined(VERBOSE_DEBUG)
#define wiphy_vdbg wiphy_dbg
#else
#define wiphy_vdbg(wiphy, format, args...) \
({ \
if (0) \
wiphy_printk(KERN_DEBUG, wiphy, format, ##args); \
0; \
})
#endif
/*
* wiphy_WARN() acts like wiphy_printk(), but with the key difference
* of using a WARN/WARN_ON to get the message out, including the
* file/line information and a backtrace.
*/
#define wiphy_WARN(wiphy, format, args...) \
WARN(1, "wiphy: %s\n" format, wiphy_name(wiphy), ##args);
#endif /* __NET_CFG80211_H */
