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gerrit-public.fairphone.software / kernel / msm-4.9 / 34dd886c19547ea138634b98a615ccd1fe42cd20 / . / include / net / cfg80211.h
blob: 6510ccf53a54590c0f3896ee7ccc6bd993acd75b [file] [log] [blame]
#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/bug.h>
#include <linux/netlink.h>
#include <linux/skbuff.h>
#include <linux/nl80211.h>
#include <linux/if_ether.h>
#include <linux/ieee80211.h>
#include <linux/net.h>
#include <net/regulatory.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.
*/
struct wiphy;
/*
* 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_BAND_60GHZ: around 60 GHz band (58.32 - 64.80 GHz)
* @IEEE80211_NUM_BANDS: number of defined bands
*/
enum ieee80211_band {
IEEE80211_BAND_2GHZ = NL80211_BAND_2GHZ,
IEEE80211_BAND_5GHZ = NL80211_BAND_5GHZ,
IEEE80211_BAND_60GHZ = NL80211_BAND_60GHZ,
/* 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_NO_IR: do not initiate radiation, this includes
* sending probe requests or beaconing.
* @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.
* @IEEE80211_CHAN_NO_OFDM: OFDM is not allowed on this channel.
* @IEEE80211_CHAN_NO_80MHZ: If the driver supports 80 MHz on the band,
* this flag indicates that an 80 MHz channel cannot use this
* channel as the control or any of the secondary channels.
* This may be due to the driver or due to regulatory bandwidth
* restrictions.
* @IEEE80211_CHAN_NO_160MHZ: If the driver supports 160 MHz on the band,
* this flag indicates that an 160 MHz channel cannot use this
* channel as the control or any of the secondary channels.
* This may be due to the driver or due to regulatory bandwidth
* restrictions.
*/
enum ieee80211_channel_flags {
IEEE80211_CHAN_DISABLED = 1<<0,
IEEE80211_CHAN_NO_IR = 1<<1,
/* hole at 1<<2 */
IEEE80211_CHAN_RADAR = 1<<3,
IEEE80211_CHAN_NO_HT40PLUS = 1<<4,
IEEE80211_CHAN_NO_HT40MINUS = 1<<5,
IEEE80211_CHAN_NO_OFDM = 1<<6,
IEEE80211_CHAN_NO_80MHZ = 1<<7,
IEEE80211_CHAN_NO_160MHZ = 1<<8,
};
#define IEEE80211_CHAN_NO_HT40 \
(IEEE80211_CHAN_NO_HT40PLUS | IEEE80211_CHAN_NO_HT40MINUS)
#define IEEE80211_DFS_MIN_CAC_TIME_MS 60000
#define IEEE80211_DFS_MIN_NOP_TIME_MS (30 * 60 * 1000)
/**
* 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)
* @max_reg_power: maximum regulatory 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
* @dfs_state: current state of this channel. Only relevant if radar is required
* on this channel.
* @dfs_state_entered: timestamp (jiffies) when the dfs state was entered.
* @dfs_cac_ms: DFS CAC time in milliseconds, this is valid for DFS channels.
*/
struct ieee80211_channel {
enum ieee80211_band band;
u16 center_freq;
u16 hw_value;
u32 flags;
int max_antenna_gain;
int max_power;
int max_reg_power;
bool beacon_found;
u32 orig_flags;
int orig_mag, orig_mpwr;
enum nl80211_dfs_state dfs_state;
unsigned long dfs_state_entered;
unsigned int dfs_cac_ms;
};
/**
* 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.
* @IEEE80211_RATE_SUPPORTS_5MHZ: Rate can be used in 5 MHz mode
* @IEEE80211_RATE_SUPPORTS_10MHZ: Rate can be used in 10 MHz 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,
IEEE80211_RATE_SUPPORTS_5MHZ = 1<<5,
IEEE80211_RATE_SUPPORTS_10MHZ = 1<<6,
};
/**
* 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_sta_vht_cap - STA's VHT capabilities
*
* This structure describes most essential parameters needed
* to describe 802.11ac VHT capabilities for an STA.
*
* @vht_supported: is VHT supported by the STA
* @cap: VHT capabilities map as described in 802.11ac spec
* @vht_mcs: Supported VHT MCS rates
*/
struct ieee80211_sta_vht_cap {
bool vht_supported;
u32 cap; /* use IEEE80211_VHT_CAP_ */
struct ieee80211_vht_mcs_info vht_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
* @vht_cap: VHT 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;
struct ieee80211_sta_vht_cap vht_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
* @macaddr: address to use for this virtual interface. This will only
* be used for non-netdevice interfaces. If this parameter is set
* to zero address the driver may determine the address as needed.
*/
struct vif_params {
int use_4addr;
u8 macaddr[ETH_ALEN];
};
/**
* 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;
};
/**
* struct cfg80211_chan_def - channel definition
* @chan: the (control) channel
* @width: channel width
* @center_freq1: center frequency of first segment
* @center_freq2: center frequency of second segment
* (only with 80+80 MHz)
*/
struct cfg80211_chan_def {
struct ieee80211_channel *chan;
enum nl80211_chan_width width;
u32 center_freq1;
u32 center_freq2;
};
/**
* cfg80211_get_chandef_type - return old channel type from chandef
* @chandef: the channel definition
*
* Return: The old channel type (NOHT, HT20, HT40+/-) from a given
* chandef, which must have a bandwidth allowing this conversion.
*/
static inline enum nl80211_channel_type
cfg80211_get_chandef_type(const struct cfg80211_chan_def *chandef)
{
switch (chandef->width) {
case NL80211_CHAN_WIDTH_20_NOHT:
return NL80211_CHAN_NO_HT;
case NL80211_CHAN_WIDTH_20:
return NL80211_CHAN_HT20;
case NL80211_CHAN_WIDTH_40:
if (chandef->center_freq1 > chandef->chan->center_freq)
return NL80211_CHAN_HT40PLUS;
return NL80211_CHAN_HT40MINUS;
default:
WARN_ON(1);
return NL80211_CHAN_NO_HT;
}
}
/**
* cfg80211_chandef_create - create channel definition using channel type
* @chandef: the channel definition struct to fill
* @channel: the control channel
* @chantype: the channel type
*
* Given a channel type, create a channel definition.
*/
void cfg80211_chandef_create(struct cfg80211_chan_def *chandef,
struct ieee80211_channel *channel,
enum nl80211_channel_type chantype);
/**
* cfg80211_chandef_identical - check if two channel definitions are identical
* @chandef1: first channel definition
* @chandef2: second channel definition
*
* Return: %true if the channels defined by the channel definitions are
* identical, %false otherwise.
*/
static inline bool
cfg80211_chandef_identical(const struct cfg80211_chan_def *chandef1,
const struct cfg80211_chan_def *chandef2)
{
return (chandef1->chan == chandef2->chan &&
chandef1->width == chandef2->width &&
chandef1->center_freq1 == chandef2->center_freq1 &&
chandef1->center_freq2 == chandef2->center_freq2);
}
/**
* cfg80211_chandef_compatible - check if two channel definitions are compatible
* @chandef1: first channel definition
* @chandef2: second channel definition
*
* Return: %NULL if the given channel definitions are incompatible,
* chandef1 or chandef2 otherwise.
*/
const struct cfg80211_chan_def *
cfg80211_chandef_compatible(const struct cfg80211_chan_def *chandef1,
const struct cfg80211_chan_def *chandef2);
/**
* cfg80211_chandef_valid - check if a channel definition is valid
* @chandef: the channel definition to check
* Return: %true if the channel definition is valid. %false otherwise.
*/
bool cfg80211_chandef_valid(const struct cfg80211_chan_def *chandef);
/**
* cfg80211_chandef_usable - check if secondary channels can be used
* @wiphy: the wiphy to validate against
* @chandef: the channel definition to check
* @prohibited_flags: the regulatory channel flags that must not be set
* Return: %true if secondary channels are usable. %false otherwise.
*/
bool cfg80211_chandef_usable(struct wiphy *wiphy,
const struct cfg80211_chan_def *chandef,
u32 prohibited_flags);
/**
* cfg80211_chandef_dfs_required - checks if radar detection is required
* @wiphy: the wiphy to validate against
* @chandef: the channel definition to check
* Return: 1 if radar detection is required, 0 if it is not, < 0 on error
*/
int cfg80211_chandef_dfs_required(struct wiphy *wiphy,
const struct cfg80211_chan_def *chandef);
/**
* ieee80211_chandef_rate_flags - returns rate flags for a channel
*
* In some channel types, not all rates may be used - for example CCK
* rates may not be used in 5/10 MHz channels.
*
* @chandef: channel definition for the channel
*
* Returns: rate flags which apply for this channel
*/
static inline enum ieee80211_rate_flags
ieee80211_chandef_rate_flags(struct cfg80211_chan_def *chandef)
{
switch (chandef->width) {
case NL80211_CHAN_WIDTH_5:
return IEEE80211_RATE_SUPPORTS_5MHZ;
case NL80211_CHAN_WIDTH_10:
return IEEE80211_RATE_SUPPORTS_10MHZ;
default:
break;
}
return 0;
}
/**
* ieee80211_chandef_max_power - maximum transmission power for the chandef
*
* In some regulations, the transmit power may depend on the configured channel
* bandwidth which may be defined as dBm/MHz. This function returns the actual
* max_power for non-standard (20 MHz) channels.
*
* @chandef: channel definition for the channel
*
* Returns: maximum allowed transmission power in dBm for the chandef
*/
static inline int
ieee80211_chandef_max_power(struct cfg80211_chan_def *chandef)
{
switch (chandef->width) {
case NL80211_CHAN_WIDTH_5:
return min(chandef->chan->max_reg_power - 6,
chandef->chan->max_power);
case NL80211_CHAN_WIDTH_10:
return min(chandef->chan->max_reg_power - 3,
chandef->chan->max_power);
default:
break;
}
return chandef->chan->max_power;
}
/**
* 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 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_beacon_data - beacon data
* @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
* @head_len: length of @head
* @tail_len: length of @tail
* @beacon_ies: extra information element(s) to add into Beacon frames or %NULL
* @beacon_ies_len: length of beacon_ies in octets
* @proberesp_ies: extra information element(s) to add into Probe Response
* frames or %NULL
* @proberesp_ies_len: length of proberesp_ies in octets
* @assocresp_ies: extra information element(s) to add into (Re)Association
* Response frames or %NULL
* @assocresp_ies_len: length of assocresp_ies in octets
* @probe_resp_len: length of probe response template (@probe_resp)
* @probe_resp: probe response template (AP mode only)
*/
struct cfg80211_beacon_data {
const u8 *head, *tail;
const u8 *beacon_ies;
const u8 *proberesp_ies;
const u8 *assocresp_ies;
const u8 *probe_resp;
size_t head_len, tail_len;
size_t beacon_ies_len;
size_t proberesp_ies_len;
size_t assocresp_ies_len;
size_t probe_resp_len;
};
struct mac_address {
u8 addr[ETH_ALEN];
};
/**
* struct cfg80211_acl_data - Access control list data
*
* @acl_policy: ACL policy to be applied on the station's
* entry specified by mac_addr
* @n_acl_entries: Number of MAC address entries passed
* @mac_addrs: List of MAC addresses of stations to be used for ACL
*/
struct cfg80211_acl_data {
enum nl80211_acl_policy acl_policy;
int n_acl_entries;
/* Keep it last */
struct mac_address mac_addrs[];
};
/**
* struct cfg80211_ap_settings - AP configuration
*
* Used to configure an AP interface.
*
* @chandef: defines the channel to use
* @beacon: beacon data
* @beacon_interval: beacon interval
* @dtim_period: DTIM period
* @ssid: SSID to be used in the BSS (note: may be %NULL if not provided from
* user space)
* @ssid_len: length of @ssid
* @hidden_ssid: whether to hide the SSID in Beacon/Probe Response frames
* @crypto: crypto settings
* @privacy: the BSS uses privacy
* @auth_type: Authentication type (algorithm)
* @inactivity_timeout: time in seconds to determine station's inactivity.
* @p2p_ctwindow: P2P CT Window
* @p2p_opp_ps: P2P opportunistic PS
* @acl: ACL configuration used by the drivers which has support for
* MAC address based access control
* @radar_required: set if radar detection is required
*/
struct cfg80211_ap_settings {
struct cfg80211_chan_def chandef;
struct cfg80211_beacon_data beacon;
int beacon_interval, dtim_period;
const u8 *ssid;
size_t ssid_len;
enum nl80211_hidden_ssid hidden_ssid;
struct cfg80211_crypto_settings crypto;
bool privacy;
enum nl80211_auth_type auth_type;
int inactivity_timeout;
u8 p2p_ctwindow;
bool p2p_opp_ps;
const struct cfg80211_acl_data *acl;
bool radar_required;
};
/**
* struct cfg80211_csa_settings - channel switch settings
*
* Used for channel switch
*
* @chandef: defines the channel to use after the switch
* @beacon_csa: beacon data while performing the switch
* @counter_offset_beacon: offset for the counter within the beacon (tail)
* @counter_offset_presp: offset for the counter within the probe response
* @beacon_after: beacon data to be used on the new channel
* @radar_required: whether radar detection is required on the new channel
* @block_tx: whether transmissions should be blocked while changing
* @count: number of beacons until switch
*/
struct cfg80211_csa_settings {
struct cfg80211_chan_def chandef;
struct cfg80211_beacon_data beacon_csa;
u16 counter_offset_beacon, counter_offset_presp;
struct cfg80211_beacon_data beacon_after;
bool radar_required;
bool block_tx;
u8 count;
};
/**
* enum station_parameters_apply_mask - station parameter values to apply
* @STATION_PARAM_APPLY_UAPSD: apply new uAPSD parameters (uapsd_queues, max_sp)
* @STATION_PARAM_APPLY_CAPABILITY: apply new capability
* @STATION_PARAM_APPLY_PLINK_STATE: apply new plink state
*
* Not all station parameters have in-band "no change" signalling,
* for those that don't these flags will are used.
*/
enum station_parameters_apply_mask {
STATION_PARAM_APPLY_UAPSD = BIT(0),
STATION_PARAM_APPLY_CAPABILITY = BIT(1),
STATION_PARAM_APPLY_PLINK_STATE = BIT(2),
};
/**
* 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
* @plink_state: set the peer link state for a station
* @ht_capa: HT capabilities of station
* @vht_capa: VHT capabilities of station
* @uapsd_queues: bitmap of queues configured for uapsd. same format
* as the AC bitmap in the QoS info field
* @max_sp: max Service Period. same format as the MAX_SP in the
* QoS info field (but already shifted down)
* @sta_modify_mask: bitmap indicating which parameters changed
* (for those that don't have a natural "no change" value),
* see &enum station_parameters_apply_mask
* @local_pm: local link-specific mesh power save mode (no change when set
* to unknown)
* @capability: station capability
* @ext_capab: extended capabilities of the station
* @ext_capab_len: number of extended capabilities
* @supported_channels: supported channels in IEEE 802.11 format
* @supported_channels_len: number of supported channels
* @supported_oper_classes: supported oper classes in IEEE 802.11 format
* @supported_oper_classes_len: number of supported operating classes
* @opmode_notif: operating mode field from Operating Mode Notification
* @opmode_notif_used: information if operating mode field is used
*/
struct station_parameters {
const u8 *supported_rates;
struct net_device *vlan;
u32 sta_flags_mask, sta_flags_set;
u32 sta_modify_mask;
int listen_interval;
u16 aid;
u8 supported_rates_len;
u8 plink_action;
u8 plink_state;
const struct ieee80211_ht_cap *ht_capa;
const struct ieee80211_vht_cap *vht_capa;
u8 uapsd_queues;
u8 max_sp;
enum nl80211_mesh_power_mode local_pm;
u16 capability;
const u8 *ext_capab;
u8 ext_capab_len;
const u8 *supported_channels;
u8 supported_channels_len;
const u8 *supported_oper_classes;
u8 supported_oper_classes_len;
u8 opmode_notif;
bool opmode_notif_used;
};
/**
* enum cfg80211_station_type - the type of station being modified
* @CFG80211_STA_AP_CLIENT: client of an AP interface
* @CFG80211_STA_AP_MLME_CLIENT: client of an AP interface that has
* the AP MLME in the device
* @CFG80211_STA_AP_STA: AP station on managed interface
* @CFG80211_STA_IBSS: IBSS station
* @CFG80211_STA_TDLS_PEER_SETUP: TDLS peer on managed interface (dummy entry
* while TDLS setup is in progress, it moves out of this state when
* being marked authorized; use this only if TDLS with external setup is
* supported/used)
* @CFG80211_STA_TDLS_PEER_ACTIVE: TDLS peer on managed interface (active
* entry that is operating, has been marked authorized by userspace)
* @CFG80211_STA_MESH_PEER_KERNEL: peer on mesh interface (kernel managed)
* @CFG80211_STA_MESH_PEER_USER: peer on mesh interface (user managed)
*/
enum cfg80211_station_type {
CFG80211_STA_AP_CLIENT,
CFG80211_STA_AP_MLME_CLIENT,
CFG80211_STA_AP_STA,
CFG80211_STA_IBSS,
CFG80211_STA_TDLS_PEER_SETUP,
CFG80211_STA_TDLS_PEER_ACTIVE,
CFG80211_STA_MESH_PEER_KERNEL,
CFG80211_STA_MESH_PEER_USER,
};
/**
* cfg80211_check_station_change - validate parameter changes
* @wiphy: the wiphy this operates on
* @params: the new parameters for a station
* @statype: the type of station being modified
*
* Utility function for the @change_station driver method. Call this function
* with the appropriate station type looking up the station (and checking that
* it exists). It will verify whether the station change is acceptable, and if
* not will return an error code. Note that it may modify the parameters for
* backward compatibility reasons, so don't use them before calling this.
*/
int cfg80211_check_station_change(struct wiphy *wiphy,
struct station_parameters *params,
enum cfg80211_station_type statype);
/**
* 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_RX_BYTES64: @rx_bytes filled with 64-bit value
* @STATION_INFO_TX_BYTES64: @tx_bytes filled with 64-bit value
* @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 with 32-bit value
* @STATION_INFO_TX_PACKETS: @tx_packets filled with 32-bit value
* @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
* @STATION_INFO_BSS_PARAM: @bss_param filled
* @STATION_INFO_CONNECTED_TIME: @connected_time filled
* @STATION_INFO_ASSOC_REQ_IES: @assoc_req_ies filled
* @STATION_INFO_STA_FLAGS: @sta_flags filled
* @STATION_INFO_BEACON_LOSS_COUNT: @beacon_loss_count filled
* @STATION_INFO_T_OFFSET: @t_offset filled
* @STATION_INFO_LOCAL_PM: @local_pm filled
* @STATION_INFO_PEER_PM: @peer_pm filled
* @STATION_INFO_NONPEER_PM: @nonpeer_pm filled
* @STATION_INFO_CHAIN_SIGNAL: @chain_signal filled
* @STATION_INFO_CHAIN_SIGNAL_AVG: @chain_signal_avg 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,
STATION_INFO_BSS_PARAM = 1<<15,
STATION_INFO_CONNECTED_TIME = 1<<16,
STATION_INFO_ASSOC_REQ_IES = 1<<17,
STATION_INFO_STA_FLAGS = 1<<18,
STATION_INFO_BEACON_LOSS_COUNT = 1<<19,
STATION_INFO_T_OFFSET = 1<<20,
STATION_INFO_LOCAL_PM = 1<<21,
STATION_INFO_PEER_PM = 1<<22,
STATION_INFO_NONPEER_PM = 1<<23,
STATION_INFO_RX_BYTES64 = 1<<24,
STATION_INFO_TX_BYTES64 = 1<<25,
STATION_INFO_CHAIN_SIGNAL = 1<<26,
STATION_INFO_CHAIN_SIGNAL_AVG = 1<<27,
};
/**
* 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: mcs field filled with HT MCS
* @RATE_INFO_FLAGS_VHT_MCS: mcs field filled with VHT MCS
* @RATE_INFO_FLAGS_40_MHZ_WIDTH: 40 MHz width transmission
* @RATE_INFO_FLAGS_80_MHZ_WIDTH: 80 MHz width transmission
* @RATE_INFO_FLAGS_80P80_MHZ_WIDTH: 80+80 MHz width transmission
* @RATE_INFO_FLAGS_160_MHZ_WIDTH: 160 MHz width transmission
* @RATE_INFO_FLAGS_SHORT_GI: 400ns guard interval
* @RATE_INFO_FLAGS_60G: 60GHz MCS
*/
enum rate_info_flags {
RATE_INFO_FLAGS_MCS = BIT(0),
RATE_INFO_FLAGS_VHT_MCS = BIT(1),
RATE_INFO_FLAGS_40_MHZ_WIDTH = BIT(2),
RATE_INFO_FLAGS_80_MHZ_WIDTH = BIT(3),
RATE_INFO_FLAGS_80P80_MHZ_WIDTH = BIT(4),
RATE_INFO_FLAGS_160_MHZ_WIDTH = BIT(5),
RATE_INFO_FLAGS_SHORT_GI = BIT(6),
RATE_INFO_FLAGS_60G = BIT(7),
};
/**
* 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
* @nss: number of streams (VHT only)
*/
struct rate_info {
u8 flags;
u8 mcs;
u16 legacy;
u8 nss;
};
/**
* enum station_info_rate_flags - bitrate info flags
*
* Used by the driver to indicate the specific rate transmission
* type for 802.11n transmissions.
*
* @BSS_PARAM_FLAGS_CTS_PROT: whether CTS protection is enabled
* @BSS_PARAM_FLAGS_SHORT_PREAMBLE: whether short preamble is enabled
* @BSS_PARAM_FLAGS_SHORT_SLOT_TIME: whether short slot time is enabled
*/
enum bss_param_flags {
BSS_PARAM_FLAGS_CTS_PROT = 1<<0,
BSS_PARAM_FLAGS_SHORT_PREAMBLE = 1<<1,
BSS_PARAM_FLAGS_SHORT_SLOT_TIME = 1<<2,
};
/**
* struct sta_bss_parameters - BSS parameters for the attached station
*
* Information about the currently associated BSS
*
* @flags: bitflag of flags from &enum bss_param_flags
* @dtim_period: DTIM period for the BSS
* @beacon_interval: beacon interval
*/
struct sta_bss_parameters {
u8 flags;
u8 dtim_period;
u16 beacon_interval;
};
#define IEEE80211_MAX_CHAINS 4
/**
* 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
* @connected_time: time(in secs) since a station is last connected
* @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: The signal strength, type depends on the wiphy's signal_type.
* For CFG80211_SIGNAL_TYPE_MBM, value is expressed in _dBm_.
* @signal_avg: Average signal strength, type depends on the wiphy's signal_type.
* For CFG80211_SIGNAL_TYPE_MBM, value is expressed in _dBm_.
* @chains: bitmask for filled values in @chain_signal, @chain_signal_avg
* @chain_signal: per-chain signal strength of last received packet in dBm
* @chain_signal_avg: per-chain signal strength average in dBm
* @txrate: current unicast bitrate from this station
* @rxrate: 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.
* @bss_param: current BSS parameters
* @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.
* @assoc_req_ies: IEs from (Re)Association Request.
* This is used only when in AP mode with drivers that do not use
* user space MLME/SME implementation. The information is provided for
* the cfg80211_new_sta() calls to notify user space of the IEs.
* @assoc_req_ies_len: Length of assoc_req_ies buffer in octets.
* @sta_flags: station flags mask & values
* @beacon_loss_count: Number of times beacon loss event has triggered.
* @t_offset: Time offset of the station relative to this host.
* @local_pm: local mesh STA power save mode
* @peer_pm: peer mesh STA power save mode
* @nonpeer_pm: non-peer mesh STA power save mode
*/
struct station_info {
u32 filled;
u32 connected_time;
u32 inactive_time;
u64 rx_bytes;
u64 tx_bytes;
u16 llid;
u16 plid;
u8 plink_state;
s8 signal;
s8 signal_avg;
u8 chains;
s8 chain_signal[IEEE80211_MAX_CHAINS];
s8 chain_signal_avg[IEEE80211_MAX_CHAINS];
struct rate_info txrate;
struct rate_info rxrate;
u32 rx_packets;
u32 tx_packets;
u32 tx_retries;
u32 tx_failed;
u32 rx_dropped_misc;
struct sta_bss_parameters bss_param;
struct nl80211_sta_flag_update sta_flags;
int generation;
const u8 *assoc_req_ies;
size_t assoc_req_ies_len;
u32 beacon_loss_count;
s64 t_offset;
enum nl80211_mesh_power_mode local_pm;
enum nl80211_mesh_power_mode peer_pm;
enum nl80211_mesh_power_mode nonpeer_pm;
/*
* Note: Add a new enum station_info_flags value for each new field and
* use it to check which fields are initialized.
*/
};
/**
* 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
* @MONITOR_FLAG_ACTIVE: active monitor, ACKs frames on its MAC address
*/
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,
MONITOR_FLAG_ACTIVE = 1<<NL80211_MNTR_FLAG_ACTIVE,
};
/**
* 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)
* @p2p_ctwindow: P2P CT Window (-1 = no change)
* @p2p_opp_ps: P2P opportunistic PS (-1 = no 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;
s8 p2p_ctwindow, p2p_opp_ps;
};
/**
* struct mesh_config - 802.11s mesh configuration
*
* These parameters can be changed while the mesh is active.
*
* @dot11MeshRetryTimeout: the initial retry timeout in millisecond units used
* by the Mesh Peering Open message
* @dot11MeshConfirmTimeout: the initial retry timeout in millisecond units
* used by the Mesh Peering Open message
* @dot11MeshHoldingTimeout: the confirm timeout in millisecond units used by
* the mesh peering management to close a mesh peering
* @dot11MeshMaxPeerLinks: the maximum number of peer links allowed on this
* mesh interface
* @dot11MeshMaxRetries: the maximum number of peer link open retries that can
* be sent to establish a new peer link instance in a mesh
* @dot11MeshTTL: the value of TTL field set at a source mesh STA
* @element_ttl: the value of TTL field set at a mesh STA for path selection
* elements
* @auto_open_plinks: whether we should automatically open peer links when we
* detect compatible mesh peers
* @dot11MeshNbrOffsetMaxNeighbor: the maximum number of neighbors to
* synchronize to for 11s default synchronization method
* @dot11MeshHWMPmaxPREQretries: the number of action frames containing a PREQ
* that an originator mesh STA can send to a particular path target
* @path_refresh_time: how frequently to refresh mesh paths in milliseconds
* @min_discovery_timeout: the minimum length of time to wait until giving up on
* a path discovery in milliseconds
* @dot11MeshHWMPactivePathTimeout: the time (in TUs) for which mesh STAs
* receiving a PREQ shall consider the forwarding information from the
* root to be valid. (TU = time unit)
* @dot11MeshHWMPpreqMinInterval: the minimum interval of time (in TUs) during
* which a mesh STA can send only one action frame containing a PREQ
* element
* @dot11MeshHWMPperrMinInterval: the minimum interval of time (in TUs) during
* which a mesh STA can send only one Action frame containing a PERR
* element
* @dot11MeshHWMPnetDiameterTraversalTime: the interval of time (in TUs) that
* it takes for an HWMP information element to propagate across the mesh
* @dot11MeshHWMPRootMode: the configuration of a mesh STA as root mesh STA
* @dot11MeshHWMPRannInterval: the interval of time (in TUs) between root
* announcements are transmitted
* @dot11MeshGateAnnouncementProtocol: whether to advertise that this mesh
* station has access to a broader network beyond the MBSS. (This is
* missnamed in draft 12.0: dot11MeshGateAnnouncementProtocol set to true
* only means that the station will announce others it's a mesh gate, but
* not necessarily using the gate announcement protocol. Still keeping the
* same nomenclature to be in sync with the spec)
* @dot11MeshForwarding: whether the Mesh STA is forwarding or non-forwarding
* entity (default is TRUE - forwarding entity)
* @rssi_threshold: the threshold for average signal strength of candidate
* station to establish a peer link
* @ht_opmode: mesh HT protection mode
*
* @dot11MeshHWMPactivePathToRootTimeout: The time (in TUs) for which mesh STAs
* receiving a proactive PREQ shall consider the forwarding information to
* the root mesh STA to be valid.
*
* @dot11MeshHWMProotInterval: The interval of time (in TUs) between proactive
* PREQs are transmitted.
* @dot11MeshHWMPconfirmationInterval: The minimum interval of time (in TUs)
* during which a mesh STA can send only one Action frame containing
* a PREQ element for root path confirmation.
* @power_mode: The default mesh power save mode which will be the initial
* setting for new peer links.
* @dot11MeshAwakeWindowDuration: The duration in TUs the STA will remain awake
* after transmitting its beacon.
* @plink_timeout: If no tx activity is seen from a STA we've established
* peering with for longer than this time (in seconds), then remove it
* from the STA's list of peers. Default is 30 minutes.
*/
struct mesh_config {
u16 dot11MeshRetryTimeout;
u16 dot11MeshConfirmTimeout;
u16 dot11MeshHoldingTimeout;
u16 dot11MeshMaxPeerLinks;
u8 dot11MeshMaxRetries;
u8 dot11MeshTTL;
u8 element_ttl;
bool auto_open_plinks;
u32 dot11MeshNbrOffsetMaxNeighbor;
u8 dot11MeshHWMPmaxPREQretries;
u32 path_refresh_time;
u16 min_discovery_timeout;
u32 dot11MeshHWMPactivePathTimeout;
u16 dot11MeshHWMPpreqMinInterval;
u16 dot11MeshHWMPperrMinInterval;
u16 dot11MeshHWMPnetDiameterTraversalTime;
u8 dot11MeshHWMPRootMode;
u16 dot11MeshHWMPRannInterval;
bool dot11MeshGateAnnouncementProtocol;
bool dot11MeshForwarding;
s32 rssi_threshold;
u16 ht_opmode;
u32 dot11MeshHWMPactivePathToRootTimeout;
u16 dot11MeshHWMProotInterval;
u16 dot11MeshHWMPconfirmationInterval;
enum nl80211_mesh_power_mode power_mode;
u16 dot11MeshAwakeWindowDuration;
u32 plink_timeout;
};
/**
* struct mesh_setup - 802.11s mesh setup configuration
* @chandef: defines the channel to use
* @mesh_id: the mesh ID
* @mesh_id_len: length of the mesh ID, at least 1 and at most 32 bytes
* @sync_method: which synchronization method to use
* @path_sel_proto: which path selection protocol to use
* @path_metric: which metric to use
* @auth_id: which authentication method this mesh is using
* @ie: vendor information elements (optional)
* @ie_len: length of vendor information elements
* @is_authenticated: this mesh requires authentication
* @is_secure: this mesh uses security
* @user_mpm: userspace handles all MPM functions
* @dtim_period: DTIM period to use
* @beacon_interval: beacon interval to use
* @mcast_rate: multicat rate for Mesh Node [6Mbps is the default for 802.11a]
* @basic_rates: basic rates to use when creating the mesh
*
* These parameters are fixed when the mesh is created.
*/
struct mesh_setup {
struct cfg80211_chan_def chandef;
const u8 *mesh_id;
u8 mesh_id_len;
u8 sync_method;
u8 path_sel_proto;
u8 path_metric;
u8 auth_id;
const u8 *ie;
u8 ie_len;
bool is_authenticated;
bool is_secure;
bool user_mpm;
u8 dtim_period;
u16 beacon_interval;
int mcast_rate[IEEE80211_NUM_BANDS];
u32 basic_rates;
};
/**
* struct ieee80211_txq_params - TX queue parameters
* @ac: AC identifier
* @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_ac ac;
u16 txop;
u16 cwmin;
u16 cwmax;
u8 aifs;
};
/**
* 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
* @scan_width: channel width for scanning
* @ie: optional information element(s) to add into Probe Request or %NULL
* @ie_len: length of ie in octets
* @flags: bit field of flags controlling operation
* @rates: bitmap of rates to advertise for each band
* @wiphy: the wiphy this was for
* @scan_start: time (in jiffies) when the scan started
* @wdev: the wireless device to scan for
* @aborted: (internal) scan request was notified as aborted
* @notified: (internal) scan request was notified as done or aborted
* @no_cck: used to send probe requests at non CCK rate in 2GHz band
*/
struct cfg80211_scan_request {
struct cfg80211_ssid *ssids;
int n_ssids;
u32 n_channels;
enum nl80211_bss_scan_width scan_width;
const u8 *ie;
size_t ie_len;
u32 flags;
u32 rates[IEEE80211_NUM_BANDS];
struct wireless_dev *wdev;
/* internal */
struct wiphy *wiphy;
unsigned long scan_start;
bool aborted, notified;
bool no_cck;
/* keep last */
struct ieee80211_channel *channels[0];
};
/**
* struct cfg80211_match_set - sets of attributes to match
*
* @ssid: SSID to be matched; may be zero-length for no match (RSSI only)
* @rssi_thold: don't report scan results below this threshold (in s32 dBm)
*/
struct cfg80211_match_set {
struct cfg80211_ssid ssid;
s32 rssi_thold;
};
/**
* struct cfg80211_sched_scan_request - scheduled scan request description
*
* @ssids: SSIDs to scan for (passed in the probe_reqs in active scans)
* @n_ssids: number of SSIDs
* @n_channels: total number of channels to scan
* @scan_width: channel width for scanning
* @interval: interval between each scheduled scan cycle
* @ie: optional information element(s) to add into Probe Request or %NULL
* @ie_len: length of ie in octets
* @flags: bit field of flags controlling operation
* @match_sets: sets of parameters to be matched for a scan result
* entry to be considered valid and to be passed to the host
* (others are filtered out).
* If ommited, all results are passed.
* @n_match_sets: number of match sets
* @wiphy: the wiphy this was for
* @dev: the interface
* @scan_start: start time of the scheduled scan
* @channels: channels to scan
* @min_rssi_thold: for drivers only supporting a single threshold, this
* contains the minimum over all matchsets
*/
struct cfg80211_sched_scan_request {
struct cfg80211_ssid *ssids;
int n_ssids;
u32 n_channels;
enum nl80211_bss_scan_width scan_width;
u32 interval;
const u8 *ie;
size_t ie_len;
u32 flags;
struct cfg80211_match_set *match_sets;
int n_match_sets;
s32 min_rssi_thold;
/* internal */
struct wiphy *wiphy;
struct net_device *dev;
unsigned long scan_start;
/* 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_ie_data - BSS entry IE data
* @tsf: TSF contained in the frame that carried these IEs
* @rcu_head: internal use, for freeing
* @len: length of the IEs
* @data: IE data
*/
struct cfg80211_bss_ies {
u64 tsf;
struct rcu_head rcu_head;
int len;
u8 data[];
};
/**
* 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
* @scan_width: width of the control channel
* @bssid: BSSID of the BSS
* @beacon_interval: the beacon interval as from the frame
* @capability: the capability field in host byte order
* @ies: 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. It is always non-%NULL.
* @beacon_ies: the information elements from the last Beacon frame
* (implementation note: if @hidden_beacon_bss is set this struct doesn't
* own the beacon_ies, but they're just pointers to the ones from the
* @hidden_beacon_bss struct)
* @proberesp_ies: the information elements from the last Probe Response frame
* @hidden_beacon_bss: in case this BSS struct represents a probe response from
* a BSS that hides the SSID in its beacon, this points to the BSS struct
* that holds the beacon data. @beacon_ies is still valid, of course, and
* points to the same data as hidden_beacon_bss->beacon_ies in that case.
* @signal: signal strength value (type depends on the wiphy's signal_type)
* @priv: private area for driver use, has at least wiphy->bss_priv_size bytes
*/
struct cfg80211_bss {
struct ieee80211_channel *channel;
enum nl80211_bss_scan_width scan_width;
const struct cfg80211_bss_ies __rcu *ies;
const struct cfg80211_bss_ies __rcu *beacon_ies;
const struct cfg80211_bss_ies __rcu *proberesp_ies;
struct cfg80211_bss *hidden_beacon_bss;
s32 signal;
u16 beacon_interval;
u16 capability;
u8 bssid[ETH_ALEN];
u8 priv[0] __aligned(sizeof(void *));
};
/**
* ieee80211_bss_get_ie - find IE with given ID
* @bss: the bss to search
* @ie: the IE ID
*
* Note that the return value is an RCU-protected pointer, so
* rcu_read_lock() must be held when calling this function.
* Return: %NULL if not found.
*/
const u8 *ieee80211_bss_get_ie(struct cfg80211_bss *bss, u8 ie);
/**
* struct cfg80211_auth_request - Authentication request data
*
* This structure provides information needed to complete IEEE 802.11
* authentication.
*
* @bss: The BSS to authenticate with, the callee must obtain a reference
* to it if it needs to keep it.
* @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
* @sae_data: Non-IE data to use with SAE or %NULL. This starts with
* Authentication transaction sequence number field.
* @sae_data_len: Length of sae_data buffer in octets
*/
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;
const u8 *sae_data;
size_t sae_data_len;
};
/**
* enum cfg80211_assoc_req_flags - Over-ride default behaviour in association.
*
* @ASSOC_REQ_DISABLE_HT: Disable HT (802.11n)
* @ASSOC_REQ_DISABLE_VHT: Disable VHT
*/
enum cfg80211_assoc_req_flags {
ASSOC_REQ_DISABLE_HT = BIT(0),
ASSOC_REQ_DISABLE_VHT = BIT(1),
};
/**
* 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. If the call is successful the driver is
* given a reference that it must give back to cfg80211_send_rx_assoc()
* or to cfg80211_assoc_timeout(). To ensure proper refcounting, new
* association requests while already associating must be rejected.
* @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
* @flags: See &enum cfg80211_assoc_req_flags
* @ht_capa: HT Capabilities over-rides. Values set in ht_capa_mask
* will be used in ht_capa. Un-supported values will be ignored.
* @ht_capa_mask: The bits of ht_capa which are to be used.
* @vht_capa: VHT capability override
* @vht_capa_mask: VHT capability mask indicating which fields to use
*/
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;
u32 flags;
struct ieee80211_ht_cap ht_capa;
struct ieee80211_ht_cap ht_capa_mask;
struct ieee80211_vht_cap vht_capa, vht_capa_mask;
};
/**
* struct cfg80211_deauth_request - Deauthentication request data
*
* This structure provides information needed to complete IEEE 802.11
* deauthentication.
*
* @bssid: the BSSID of 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: if set, change local state only and
* do not set a deauth frame
*/
struct cfg80211_deauth_request {
const u8 *bssid;
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.
* @chandef: defines the channel to use if no other IBSS to join can be found
* @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
* @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.
* @userspace_handles_dfs: whether user space controls DFS operation, i.e.
* changes the channel when a radar is detected. This is required
* to operate on DFS channels.
* @basic_rates: bitmap of basic rates to use when creating the IBSS
* @mcast_rate: per-band multicast rate index + 1 (0: disabled)
* @ht_capa: HT Capabilities over-rides. Values set in ht_capa_mask
* will be used in ht_capa. Un-supported values will be ignored.
* @ht_capa_mask: The bits of ht_capa which are to be used.
*/
struct cfg80211_ibss_params {
u8 *ssid;
u8 *bssid;
struct cfg80211_chan_def chandef;
u8 *ie;
u8 ssid_len, ie_len;
u16 beacon_interval;
u32 basic_rates;
bool channel_fixed;
bool privacy;
bool control_port;
bool userspace_handles_dfs;
int mcast_rate[IEEE80211_NUM_BANDS];
struct ieee80211_ht_cap ht_capa;
struct ieee80211_ht_cap ht_capa_mask;
};
/**
* 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)
* @channel_hint: The channel of the recommended BSS for initial connection or
* %NULL if not specified
* @bssid: The AP BSSID or %NULL if not specified (auto-select based on scan
* results)
* @bssid_hint: The recommended AP BSSID for initial connection to the BSS or
* %NULL if not specified. Unlike the @bssid parameter, the driver is
* allowed to ignore this @bssid_hint if it has knowledge of a better BSS
* to use.
* @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
* @mfp: indicate whether management frame protection is 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
* @flags: See &enum cfg80211_assoc_req_flags
* @bg_scan_period: Background scan period in seconds
* or -1 to indicate that default value is to be used.
* @ht_capa: HT Capabilities over-rides. Values set in ht_capa_mask
* will be used in ht_capa. Un-supported values will be ignored.
* @ht_capa_mask: The bits of ht_capa which are to be used.
* @vht_capa: VHT Capability overrides
* @vht_capa_mask: The bits of vht_capa which are to be used.
*/
struct cfg80211_connect_params {
struct ieee80211_channel *channel;
struct ieee80211_channel *channel_hint;
const u8 *bssid;
const u8 *bssid_hint;
const u8 *ssid;
size_t ssid_len;
enum nl80211_auth_type auth_type;
const u8 *ie;
size_t ie_len;
bool privacy;
enum nl80211_mfp mfp;
struct cfg80211_crypto_settings crypto;
const u8 *key;
u8 key_len, key_idx;
u32 flags;
int bg_scan_period;
struct ieee80211_ht_cap ht_capa;
struct ieee80211_ht_cap ht_capa_mask;
struct ieee80211_vht_cap vht_capa;
struct ieee80211_vht_cap vht_capa_mask;
};
/**
* 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;
u8 ht_mcs[IEEE80211_HT_MCS_MASK_LEN];
u16 vht_mcs[NL80211_VHT_NSS_MAX];
enum nl80211_txrate_gi gi;
} 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_pkt_pattern - packet pattern
* @mask: bitmask where to match pattern and where to ignore bytes,
* one bit per byte, in same format as nl80211
* @pattern: bytes to match where bitmask is 1
* @pattern_len: length of pattern (in bytes)
* @pkt_offset: packet offset (in bytes)
*
* Internal note: @mask and @pattern are allocated in one chunk of
* memory, free @mask only!
*/
struct cfg80211_pkt_pattern {
u8 *mask, *pattern;
int pattern_len;
int pkt_offset;
};
/**
* struct cfg80211_wowlan_tcp - TCP connection parameters
*
* @sock: (internal) socket for source port allocation
* @src: source IP address
* @dst: destination IP address
* @dst_mac: destination MAC address
* @src_port: source port
* @dst_port: destination port
* @payload_len: data payload length
* @payload: data payload buffer
* @payload_seq: payload sequence stamping configuration
* @data_interval: interval at which to send data packets
* @wake_len: wakeup payload match length
* @wake_data: wakeup payload match data
* @wake_mask: wakeup payload match mask
* @tokens_size: length of the tokens buffer
* @payload_tok: payload token usage configuration
*/
struct cfg80211_wowlan_tcp {
struct socket *sock;
__be32 src, dst;
u16 src_port, dst_port;
u8 dst_mac[ETH_ALEN];
int payload_len;
const u8 *payload;
struct nl80211_wowlan_tcp_data_seq payload_seq;
u32 data_interval;
u32 wake_len;
const u8 *wake_data, *wake_mask;
u32 tokens_size;
/* must be last, variable member */
struct nl80211_wowlan_tcp_data_token payload_tok;
};
/**
* struct cfg80211_wowlan - Wake on Wireless-LAN support info
*
* This structure defines the enabled WoWLAN triggers for the device.
* @any: wake up on any activity -- special trigger if device continues
* operating as normal during suspend
* @disconnect: wake up if getting disconnected
* @magic_pkt: wake up on receiving magic packet
* @patterns: wake up on receiving packet matching a pattern
* @n_patterns: number of patterns
* @gtk_rekey_failure: wake up on GTK rekey failure
* @eap_identity_req: wake up on EAP identity request packet
* @four_way_handshake: wake up on 4-way handshake
* @rfkill_release: wake up when rfkill is released
* @tcp: TCP connection establishment/wakeup parameters, see nl80211.h.
* NULL if not configured.
*/
struct cfg80211_wowlan {
bool any, disconnect, magic_pkt, gtk_rekey_failure,
eap_identity_req, four_way_handshake,
rfkill_release;
struct cfg80211_pkt_pattern *patterns;
struct cfg80211_wowlan_tcp *tcp;
int n_patterns;
};
/**
* struct cfg80211_coalesce_rules - Coalesce rule parameters
*
* This structure defines coalesce rule for the device.
* @delay: maximum coalescing delay in msecs.
* @condition: condition for packet coalescence.
* see &enum nl80211_coalesce_condition.
* @patterns: array of packet patterns
* @n_patterns: number of patterns
*/
struct cfg80211_coalesce_rules {
int delay;
enum nl80211_coalesce_condition condition;
struct cfg80211_pkt_pattern *patterns;
int n_patterns;
};
/**
* struct cfg80211_coalesce - Packet coalescing settings
*
* This structure defines coalescing settings.
* @rules: array of coalesce rules
* @n_rules: number of rules
*/
struct cfg80211_coalesce {
struct cfg80211_coalesce_rules *rules;
int n_rules;
};
/**
* struct cfg80211_wowlan_wakeup - wakeup report
* @disconnect: woke up by getting disconnected
* @magic_pkt: woke up by receiving magic packet
* @gtk_rekey_failure: woke up by GTK rekey failure
* @eap_identity_req: woke up by EAP identity request packet
* @four_way_handshake: woke up by 4-way handshake
* @rfkill_release: woke up by rfkill being released
* @pattern_idx: pattern that caused wakeup, -1 if not due to pattern
* @packet_present_len: copied wakeup packet data
* @packet_len: original wakeup packet length
* @packet: The packet causing the wakeup, if any.
* @packet_80211: For pattern match, magic packet and other data
* frame triggers an 802.3 frame should be reported, for
* disconnect due to deauth 802.11 frame. This indicates which
* it is.
* @tcp_match: TCP wakeup packet received
* @tcp_connlost: TCP connection lost or failed to establish
* @tcp_nomoretokens: TCP data ran out of tokens
*/
struct cfg80211_wowlan_wakeup {
bool disconnect, magic_pkt, gtk_rekey_failure,
eap_identity_req, four_way_handshake,
rfkill_release, packet_80211,
tcp_match, tcp_connlost, tcp_nomoretokens;
s32 pattern_idx;
u32 packet_present_len, packet_len;
const void *packet;
};
/**
* struct cfg80211_gtk_rekey_data - rekey data
* @kek: key encryption key
* @kck: key confirmation key
* @replay_ctr: replay counter
*/
struct cfg80211_gtk_rekey_data {
u8 kek[NL80211_KEK_LEN];
u8 kck[NL80211_KCK_LEN];
u8 replay_ctr[NL80211_REPLAY_CTR_LEN];
};
/**
* struct cfg80211_update_ft_ies_params - FT IE Information
*
* This structure provides information needed to update the fast transition IE
*
* @md: The Mobility Domain ID, 2 Octet value
* @ie: Fast Transition IEs
* @ie_len: Length of ft_ie in octets
*/
struct cfg80211_update_ft_ies_params {
u16 md;
const u8 *ie;
size_t ie_len;
};
/**
* struct cfg80211_mgmt_tx_params - mgmt tx parameters
*
* This structure provides information needed to transmit a mgmt frame
*
* @chan: channel to use
* @offchan: indicates wether off channel operation is required
* @wait: duration for ROC
* @buf: buffer to transmit
* @len: buffer length
* @no_cck: don't use cck rates for this frame
* @dont_wait_for_ack: tells the low level not to wait for an ack
*/
struct cfg80211_mgmt_tx_params {
struct ieee80211_channel *chan;
bool offchan;
unsigned int wait;
const u8 *buf;
size_t len;
bool no_cck;
bool dont_wait_for_ack;
};
/**
* struct cfg80211_dscp_exception - DSCP exception
*
* @dscp: DSCP value that does not adhere to the user priority range definition
* @up: user priority value to which the corresponding DSCP value belongs
*/
struct cfg80211_dscp_exception {
u8 dscp;
u8 up;
};
/**
* struct cfg80211_dscp_range - DSCP range definition for user priority
*
* @low: lowest DSCP value of this user priority range, inclusive
* @high: highest DSCP value of this user priority range, inclusive
*/
struct cfg80211_dscp_range {
u8 low;
u8 high;
};
/* QoS Map Set element length defined in IEEE Std 802.11-2012, 8.4.2.97 */
#define IEEE80211_QOS_MAP_MAX_EX 21
#define IEEE80211_QOS_MAP_LEN_MIN 16
#define IEEE80211_QOS_MAP_LEN_MAX \
(IEEE80211_QOS_MAP_LEN_MIN + 2 * IEEE80211_QOS_MAP_MAX_EX)
/**
* struct cfg80211_qos_map - QoS Map Information
*
* This struct defines the Interworking QoS map setting for DSCP values
*
* @num_des: number of DSCP exceptions (0..21)
* @dscp_exception: optionally up to maximum of 21 DSCP exceptions from
* the user priority DSCP range definition
* @up: DSCP range definition for a particular user priority
*/
struct cfg80211_qos_map {
u8 num_des;
struct cfg80211_dscp_exception dscp_exception[IEEE80211_QOS_MAP_MAX_EX];
struct cfg80211_dscp_range up[8];
};
/**
* 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. The variable @wow will
* be %NULL or contain the enabled Wake-on-Wireless triggers that are
* configured for the device.
* @resume: wiphy device needs to be resumed
* @set_wakeup: Called when WoWLAN is enabled/disabled, use this callback
* to call device_set_wakeup_enable() to enable/disable wakeup from
* the device.
*
* @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 struct
* wireless_dev, or an ERR_PTR. For P2P device wdevs, the driver must
* also set the address member in the wdev.
*
* @del_virtual_intf: remove the virtual interface
*
* @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
*
* @set_rekey_data: give the data necessary for GTK rekeying to the driver
*
* @start_ap: Start acting in AP mode defined by the parameters.
* @change_beacon: Change the beacon parameters for an access point mode
* interface. This should reject the call when AP mode wasn't started.
* @stop_ap: Stop being an AP, including stopping beaconing.
*
* @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. Note that flags changes are not much
* validated in cfg80211, in particular the auth/assoc/authorized flags
* might come to the driver in invalid combinations -- make sure to check
* them, also against the existing state! Drivers must call
* cfg80211_check_station_change() to validate the information.
* @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
* (invoked with the wireless_dev mutex held)
* @leave_mesh: leave the current mesh network
* (invoked with the wireless_dev mutex held)
*
* @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
*
* @libertas_set_mesh_channel: Only for backward compatibility for libertas,
* as it doesn't implement join_mesh and needs to set the channel to
* join the mesh instead.
*
* @set_monitor_channel: Set the monitor mode channel for the device. If other
* interfaces are active this callback should reject the configuration.
* If no interfaces are active or the device is down, the channel should
* be stored for when a monitor interface becomes active.
*
* @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
* (invoked with the wireless_dev mutex held)
* @assoc: Request to (re)associate with the specified peer
* (invoked with the wireless_dev mutex held)
* @deauth: Request to deauthenticate from the specified peer
* (invoked with the wireless_dev mutex held)
* @disassoc: Request to disassociate from the specified peer
* (invoked with the wireless_dev mutex held)
*
* @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.
* (invoked with the wireless_dev mutex held)
* @disconnect: Disconnect from the BSS/ESS.
* (invoked with the wireless_dev mutex held)
*
* @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.
* (invoked with the wireless_dev mutex held)
* @leave_ibss: Leave the IBSS.
* (invoked with the wireless_dev mutex held)
*
* @set_mcast_rate: Set the specified multicast rate (only if vif is in ADHOC or
* MESH mode)
*
* @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,
* the power passed is in mBm, to get dBm use MBM_TO_DBM(). The
* wdev may be %NULL if power was set for the wiphy, and will
* always be %NULL unless the driver supports per-vif TX power
* (as advertised by the nl80211 feature flag.)
* @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; @wdev may be %NULL
* @testmode_dump: Implement a test mode dump. The cb->args[2] and up may be
* used by the function, but 0 and 1 must not be touched. Additionally,
* return error codes other than -ENOBUFS and -ENOENT will terminate the
* dump and return to userspace with an error, so be careful. If any data
* was passed in from userspace then the data/len arguments will be present
* and point to the data contained in %NL80211_ATTR_TESTDATA.
*
* @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.
* @set_cqm_txe_config: Configure connection quality monitor TX error
* thresholds.
* @sched_scan_start: Tell the driver to start a scheduled scan.
* @sched_scan_stop: Tell the driver to stop an ongoing scheduled scan. This
* call must stop the scheduled scan and be ready for starting a new one
* before it returns, i.e. @sched_scan_start may be called immediately
* after that again and should not fail in that case. The driver should
* not call cfg80211_sched_scan_stopped() for a requested stop (when this
* method returns 0.)
*
* @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).
*
* @set_ringparam: Set tx and rx ring sizes.
*
* @get_ringparam: Get tx and rx ring current and maximum sizes.
*
* @tdls_mgmt: Transmit a TDLS management frame.
* @tdls_oper: Perform a high-level TDLS operation (e.g. TDLS link setup).
*
* @probe_client: probe an associated client, must return a cookie that it
* later passes to cfg80211_probe_status().
*
* @set_noack_map: Set the NoAck Map for the TIDs.
*
* @get_et_sset_count: Ethtool API to get string-set count.
* See @ethtool_ops.get_sset_count
*
* @get_et_stats: Ethtool API to get a set of u64 stats.
* See @ethtool_ops.get_ethtool_stats
*
* @get_et_strings: Ethtool API to get a set of strings to describe stats
* and perhaps other supported types of ethtool data-sets.
* See @ethtool_ops.get_strings
*
* @get_channel: Get the current operating channel for the virtual interface.
* For monitor interfaces, it should return %NULL unless there's a single
* current monitoring channel.
*
* @start_p2p_device: Start the given P2P device.
* @stop_p2p_device: Stop the given P2P device.
*
* @set_mac_acl: Sets MAC address control list in AP and P2P GO mode.
* Parameters include ACL policy, an array of MAC address of stations
* and the number of MAC addresses. If there is already a list in driver
* this new list replaces the existing one. Driver has to clear its ACL
* when number of MAC addresses entries is passed as 0. Drivers which
* advertise the support for MAC based ACL have to implement this callback.
*
* @start_radar_detection: Start radar detection in the driver.
*
* @update_ft_ies: Provide updated Fast BSS Transition information to the
* driver. If the SME is in the driver/firmware, this information can be
* used in building Authentication and Reassociation Request frames.
*
* @crit_proto_start: Indicates a critical protocol needs more link reliability
* for a given duration (milliseconds). The protocol is provided so the
* driver can take the most appropriate actions.
* @crit_proto_stop: Indicates critical protocol no longer needs increased link
* reliability. This operation can not fail.
* @set_coalesce: Set coalesce parameters.
*
* @channel_switch: initiate channel-switch procedure (with CSA)
*
* @set_qos_map: Set QoS mapping information to the driver
*/
struct cfg80211_ops {
int (*suspend)(struct wiphy *wiphy, struct cfg80211_wowlan *wow);
int (*resume)(struct wiphy *wiphy);
void (*set_wakeup)(struct wiphy *wiphy, bool enabled);
struct wireless_dev * (*add_virtual_intf)(struct wiphy *wiphy,
const char *name,
enum nl80211_iftype type,
u32 *flags,
struct vif_params *params);
int (*del_virtual_intf)(struct wiphy *wiphy,
struct wireless_dev *wdev);
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 (*start_ap)(struct wiphy *wiphy, struct net_device *dev,
struct cfg80211_ap_settings *settings);
int (*change_beacon)(struct wiphy *wiphy, struct net_device *dev,
struct cfg80211_beacon_data *info);
int (*stop_ap)(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 net_device *dev,
struct ieee80211_txq_params *params);
int (*libertas_set_mesh_channel)(struct wiphy *wiphy,
struct net_device *dev,
struct ieee80211_channel *chan);
int (*set_monitor_channel)(struct wiphy *wiphy,
struct cfg80211_chan_def *chandef);
int (*scan)(struct wiphy *wiphy,
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);
int (*disassoc)(struct wiphy *wiphy, struct net_device *dev,
struct cfg80211_disassoc_request *req);
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_mcast_rate)(struct wiphy *wiphy, struct net_device *dev,
int rate[IEEE80211_NUM_BANDS]);
int (*set_wiphy_params)(struct wiphy *wiphy, u32 changed);
int (*set_tx_power)(struct wiphy *wiphy, struct wireless_dev *wdev,
enum nl80211_tx_power_setting type, int mbm);
int (*get_tx_power)(struct wiphy *wiphy, struct wireless_dev *wdev,
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, struct wireless_dev *wdev,
void *data, int len);
int (*testmode_dump)(struct wiphy *wiphy, struct sk_buff *skb,
struct netlink_callback *cb,
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 wireless_dev *wdev,
struct ieee80211_channel *chan,
unsigned int duration,
u64 *cookie);
int (*cancel_remain_on_channel)(struct wiphy *wiphy,
struct wireless_dev *wdev,
u64 cookie);
int (*mgmt_tx)(struct wiphy *wiphy, struct wireless_dev *wdev,
struct cfg80211_mgmt_tx_params *params,
u64 *cookie);
int (*mgmt_tx_cancel_wait)(struct wiphy *wiphy,
struct wireless_dev *wdev,
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);
int (*set_cqm_txe_config)(struct wiphy *wiphy,
struct net_device *dev,
u32 rate, u32 pkts, u32 intvl);
void (*mgmt_frame_register)(struct wiphy *wiphy,
struct wireless_dev *wdev,
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);
int (*set_ringparam)(struct wiphy *wiphy, u32 tx, u32 rx);
void (*get_ringparam)(struct wiphy *wiphy,
u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max);
int (*sched_scan_start)(struct wiphy *wiphy,
struct net_device *dev,
struct cfg80211_sched_scan_request *request);
int (*sched_scan_stop)(struct wiphy *wiphy, struct net_device *dev);
int (*set_rekey_data)(struct wiphy *wiphy, struct net_device *dev,
struct cfg80211_gtk_rekey_data *data);
int (*tdls_mgmt)(struct wiphy *wiphy, struct net_device *dev,
u8 *peer, u8 action_code, u8 dialog_token,
u16 status_code, u32 peer_capability,
const u8 *buf, size_t len);
int (*tdls_oper)(struct wiphy *wiphy, struct net_device *dev,
u8 *peer, enum nl80211_tdls_operation oper);
int (*probe_client)(struct wiphy *wiphy, struct net_device *dev,
const u8 *peer, u64 *cookie);
int (*set_noack_map)(struct wiphy *wiphy,
struct net_device *dev,
u16 noack_map);
int (*get_et_sset_count)(struct wiphy *wiphy,
struct net_device *dev, int sset);
void (*get_et_stats)(struct wiphy *wiphy, struct net_device *dev,
struct ethtool_stats *stats, u64 *data);
void (*get_et_strings)(struct wiphy *wiphy, struct net_device *dev,
u32 sset, u8 *data);
int (*get_channel)(struct wiphy *wiphy,
struct wireless_dev *wdev,
struct cfg80211_chan_def *chandef);
int (*start_p2p_device)(struct wiphy *wiphy,
struct wireless_dev *wdev);
void (*stop_p2p_device)(struct wiphy *wiphy,
struct wireless_dev *wdev);
int (*set_mac_acl)(struct wiphy *wiphy, struct net_device *dev,
const struct cfg80211_acl_data *params);
int (*start_radar_detection)(struct wiphy *wiphy,
struct net_device *dev,
struct cfg80211_chan_def *chandef,
u32 cac_time_ms);
int (*update_ft_ies)(struct wiphy *wiphy, struct net_device *dev,
struct cfg80211_update_ft_ies_params *ftie);
int (*crit_proto_start)(struct wiphy *wiphy,
struct wireless_dev *wdev,
enum nl80211_crit_proto_id protocol,
u16 duration);
void (*crit_proto_stop)(struct wiphy *wiphy,
struct wireless_dev *wdev);
int (*set_coalesce)(struct wiphy *wiphy,
struct cfg80211_coalesce *coalesce);
int (*channel_switch)(struct wiphy *wiphy,
struct net_device *dev,
struct cfg80211_csa_settings *params);
int (*set_qos_map)(struct wiphy *wiphy,
struct net_device *dev,
struct cfg80211_qos_map *qos_map);
};
/*
* wireless hardware and networking interfaces structures
* and registration/helper functions
*/
/**
* enum wiphy_flags - wiphy capability flags
*
* @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_MESH_AUTH: The device supports mesh authentication by routing
* auth frames to userspace. See @NL80211_MESH_SETUP_USERSPACE_AUTH.
* @WIPHY_FLAG_SUPPORTS_SCHED_SCAN: The device supports scheduled scans.
* @WIPHY_FLAG_SUPPORTS_FW_ROAM: The device supports roaming feature in the
* firmware.
* @WIPHY_FLAG_AP_UAPSD: The device supports uapsd on AP.
* @WIPHY_FLAG_SUPPORTS_TDLS: The device supports TDLS (802.11z) operation.
* @WIPHY_FLAG_TDLS_EXTERNAL_SETUP: The device does not handle TDLS (802.11z)
* link setup/discovery operations internally. Setup, discovery and
* teardown packets should be sent through the @NL80211_CMD_TDLS_MGMT
* command. When this flag is not set, @NL80211_CMD_TDLS_OPER should be
* used for asking the driver/firmware to perform a TDLS operation.
* @WIPHY_FLAG_HAVE_AP_SME: device integrates AP SME
* @WIPHY_FLAG_REPORTS_OBSS: the device will report beacons from other BSSes
* when there are virtual interfaces in AP mode by calling
* cfg80211_report_obss_beacon().
* @WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD: When operating as an AP, the device
* responds to probe-requests in hardware.
* @WIPHY_FLAG_OFFCHAN_TX: Device supports direct off-channel TX.
* @WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL: Device supports remain-on-channel call.
* @WIPHY_FLAG_SUPPORTS_5_10_MHZ: Device supports 5 MHz and 10 MHz channels.
* @WIPHY_FLAG_HAS_CHANNEL_SWITCH: Device supports channel switch in
* beaconing mode (AP, IBSS, Mesh, ...).
*/
enum wiphy_flags {
/* use hole at 0 */
/* use hole at 1 */
/* use hole at 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_MESH_AUTH = BIT(10),
WIPHY_FLAG_SUPPORTS_SCHED_SCAN = BIT(11),
/* use hole at 12 */
WIPHY_FLAG_SUPPORTS_FW_ROAM = BIT(13),
WIPHY_FLAG_AP_UAPSD = BIT(14),
WIPHY_FLAG_SUPPORTS_TDLS = BIT(15),
WIPHY_FLAG_TDLS_EXTERNAL_SETUP = BIT(16),
WIPHY_FLAG_HAVE_AP_SME = BIT(17),
WIPHY_FLAG_REPORTS_OBSS = BIT(18),
WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD = BIT(19),
WIPHY_FLAG_OFFCHAN_TX = BIT(20),
WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL = BIT(21),
WIPHY_FLAG_SUPPORTS_5_10_MHZ = BIT(22),
WIPHY_FLAG_HAS_CHANNEL_SWITCH = BIT(23),
};
/**
* struct ieee80211_iface_limit - limit on certain interface types
* @max: maximum number of interfaces of these types
* @types: interface types (bits)
*/
struct ieee80211_iface_limit {
u16 max;
u16 types;
};
/**
* struct ieee80211_iface_combination - possible interface combination
* @limits: limits for the given interface types
* @n_limits: number of limitations
* @num_different_channels: can use up to this many different channels
* @max_interfaces: maximum number of interfaces in total allowed in this
* group
* @beacon_int_infra_match: In this combination, the beacon intervals
* between infrastructure and AP types must match. This is required
* only in special cases.
* @radar_detect_widths: bitmap of channel widths supported for radar detection
*
* With this structure the driver can describe which interface
* combinations it supports concurrently.
*
* Examples:
*
* 1. Allow #STA <= 1, #AP <= 1, matching BI, channels = 1, 2 total:
*
* struct ieee80211_iface_limit limits1[] = {
* { .max = 1, .types = BIT(NL80211_IFTYPE_STATION), },
* { .max = 1, .types = BIT(NL80211_IFTYPE_AP}, },
* };
* struct ieee80211_iface_combination combination1 = {
* .limits = limits1,
* .n_limits = ARRAY_SIZE(limits1),
* .max_interfaces = 2,
* .beacon_int_infra_match = true,
* };
*
*
* 2. Allow #{AP, P2P-GO} <= 8, channels = 1, 8 total:
*
* struct ieee80211_iface_limit limits2[] = {
* { .max = 8, .types = BIT(NL80211_IFTYPE_AP) |
* BIT(NL80211_IFTYPE_P2P_GO), },
* };
* struct ieee80211_iface_combination combination2 = {
* .limits = limits2,
* .n_limits = ARRAY_SIZE(limits2),
* .max_interfaces = 8,
* .num_different_channels = 1,
* };
*
*
* 3. Allow #STA <= 1, #{P2P-client,P2P-GO} <= 3 on two channels, 4 total.
*
* This allows for an infrastructure connection and three P2P connections.
*
* struct ieee80211_iface_limit limits3[] = {
* { .max = 1, .types = BIT(NL80211_IFTYPE_STATION), },
* { .max = 3, .types = BIT(NL80211_IFTYPE_P2P_GO) |
* BIT(NL80211_IFTYPE_P2P_CLIENT), },
* };
* struct ieee80211_iface_combination combination3 = {
* .limits = limits3,
* .n_limits = ARRAY_SIZE(limits3),
* .max_interfaces = 4,
* .num_different_channels = 2,
* };
*/
struct ieee80211_iface_combination {
const struct ieee80211_iface_limit *limits;
u32 num_different_channels;
u16 max_interfaces;
u8 n_limits;
bool beacon_int_infra_match;
u8 radar_detect_widths;
};
struct ieee80211_txrx_stypes {
u16 tx, rx;
};
/**
* enum wiphy_wowlan_support_flags - WoWLAN support flags
* @WIPHY_WOWLAN_ANY: supports wakeup for the special "any"
* trigger that keeps the device operating as-is and
* wakes up the host on any activity, for example a
* received packet that passed filtering; note that the
* packet should be preserved in that case
* @WIPHY_WOWLAN_MAGIC_PKT: supports wakeup on magic packet
* (see nl80211.h)
* @WIPHY_WOWLAN_DISCONNECT: supports wakeup on disconnect
* @WIPHY_WOWLAN_SUPPORTS_GTK_REKEY: supports GTK rekeying while asleep
* @WIPHY_WOWLAN_GTK_REKEY_FAILURE: supports wakeup on GTK rekey failure
* @WIPHY_WOWLAN_EAP_IDENTITY_REQ: supports wakeup on EAP identity request
* @WIPHY_WOWLAN_4WAY_HANDSHAKE: supports wakeup on 4-way handshake failure
* @WIPHY_WOWLAN_RFKILL_RELEASE: supports wakeup on RF-kill release
*/
enum wiphy_wowlan_support_flags {
WIPHY_WOWLAN_ANY = BIT(0),
WIPHY_WOWLAN_MAGIC_PKT = BIT(1),
WIPHY_WOWLAN_DISCONNECT = BIT(2),
WIPHY_WOWLAN_SUPPORTS_GTK_REKEY = BIT(3),
WIPHY_WOWLAN_GTK_REKEY_FAILURE = BIT(4),
WIPHY_WOWLAN_EAP_IDENTITY_REQ = BIT(5),
WIPHY_WOWLAN_4WAY_HANDSHAKE = BIT(6),
WIPHY_WOWLAN_RFKILL_RELEASE = BIT(7),
};
struct wiphy_wowlan_tcp_support {
const struct nl80211_wowlan_tcp_data_token_feature *tok;
u32 data_payload_max;
u32 data_interval_max;
u32 wake_payload_max;
bool seq;
};
/**
* struct wiphy_wowlan_support - WoWLAN support data
* @flags: see &enum wiphy_wowlan_support_flags
* @n_patterns: number of supported wakeup patterns
* (see nl80211.h for the pattern definition)
* @pattern_max_len: maximum length of each pattern
* @pattern_min_len: minimum length of each pattern
* @max_pkt_offset: maximum Rx packet offset
* @tcp: TCP wakeup support information
*/
struct wiphy_wowlan_support {
u32 flags;
int n_patterns;
int pattern_max_len;
int pattern_min_len;
int max_pkt_offset;
const struct wiphy_wowlan_tcp_support *tcp;
};
/**
* struct wiphy_coalesce_support - coalesce support data
* @n_rules: maximum number of coalesce rules
* @max_delay: maximum supported coalescing delay in msecs
* @n_patterns: number of supported patterns in a rule
* (see nl80211.h for the pattern definition)
* @pattern_max_len: maximum length of each pattern
* @pattern_min_len: minimum length of each pattern
* @max_pkt_offset: maximum Rx packet offset
*/
struct wiphy_coalesce_support {
int n_rules;
int max_delay;
int n_patterns;
int pattern_max_len;
int pattern_min_len;
int max_pkt_offset;
};
/**
* enum wiphy_vendor_command_flags - validation flags for vendor commands
* @WIPHY_VENDOR_CMD_NEED_WDEV: vendor command requires wdev
* @WIPHY_VENDOR_CMD_NEED_NETDEV: vendor command requires netdev
* @WIPHY_VENDOR_CMD_NEED_RUNNING: interface/wdev must be up & running
* (must be combined with %_WDEV or %_NETDEV)
*/
enum wiphy_vendor_command_flags {
WIPHY_VENDOR_CMD_NEED_WDEV = BIT(0),
WIPHY_VENDOR_CMD_NEED_NETDEV = BIT(1),
WIPHY_VENDOR_CMD_NEED_RUNNING = BIT(2),
};
/**
* struct wiphy_vendor_command - vendor command definition
* @info: vendor command identifying information, as used in nl80211
* @flags: flags, see &enum wiphy_vendor_command_flags
* @doit: callback for the operation, note that wdev is %NULL if the
* flags didn't ask for a wdev and non-%NULL otherwise; the data
* pointer may be %NULL if userspace provided no data at all
*/
struct wiphy_vendor_command {
struct nl80211_vendor_cmd_info info;
u32 flags;
int (*doit)(struct wiphy *wiphy, struct wireless_dev *wdev,
const void *data, int data_len);
};
/**
* 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 00-00-00-00-00-0f. 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.
* @registered: protects ->resume and ->suspend sysfs callbacks against
* unregister hardware
* @debugfsdir: debugfs directory used for this wiphy, will be renamed
* automatically on wiphy renames
* @dev: (virtual) struct device for this wiphy
* @registered: helps synchronize suspend/resume with wiphy unregister
* @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
* @iface_combinations: Valid interface combinations array, should not
* list single interface types.
* @n_iface_combinations: number of entries in @iface_combinations array.
* @software_iftypes: bitmask of software interface types, these are not
* subject to any restrictions since they are purely managed in SW.
* @flags: wiphy flags, see &enum wiphy_flags
* @regulatory_flags: wiphy regulatory flags, see
* &enum ieee80211_regulatory_flags
* @features: features advertised to nl80211, see &enum nl80211_feature_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_sched_scan_ssids: maximum number of SSIDs the device can scan
* for in any given scheduled scan
* @max_match_sets: maximum number of match sets the device can handle
* when performing a scheduled scan, 0 if filtering is not
* supported.
* @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
* @max_sched_scan_ie_len: same as max_scan_ie_len, but for scheduled
* scans
* @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.
*
* @probe_resp_offload:
* Bitmap of supported protocols for probe response offloading.
* See &enum nl80211_probe_resp_offload_support_attr. Only valid
* when the wiphy flag @WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD is set.
*
* @max_remain_on_channel_duration: Maximum time a remain-on-channel operation
* may request, if implemented.
*
* @wowlan: WoWLAN support information
* @wowlan_config: current WoWLAN configuration; this should usually not be
* used since access to it is necessarily racy, use the parameter passed
* to the suspend() operation instead.
*
* @ap_sme_capa: AP SME capabilities, flags from &enum nl80211_ap_sme_features.
* @ht_capa_mod_mask: Specify what ht_cap values can be over-ridden.
* If null, then none can be over-ridden.
* @vht_capa_mod_mask: Specify what VHT capabilities can be over-ridden.
* If null, then none can be over-ridden.
*
* @max_acl_mac_addrs: Maximum number of MAC addresses that the device
* supports for ACL.
*
* @extended_capabilities: extended capabilities supported by the driver,
* additional capabilities might be supported by userspace; these are
* the 802.11 extended capabilities ("Extended Capabilities element")
* and are in the same format as in the information element. See
* 802.11-2012 8.4.2.29 for the defined fields.
* @extended_capabilities_mask: mask of the valid values
* @extended_capabilities_len: length of the extended capabilities
* @coalesce: packet coalescing support information
*
* @vendor_commands: array of vendor commands supported by the hardware
* @n_vendor_commands: number of vendor commands
* @vendor_events: array of vendor events supported by the hardware
* @n_vendor_events: number of vendor events
*
* @max_ap_assoc_sta: maximum number of associated stations supported in AP mode
* (including P2P GO) or 0 to indicate no such limit is advertised. The
* driver is allowed to advertise a theoretical limit that it can reach in
* some cases, but may not always reach.
*/
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;
const struct ieee80211_iface_combination *iface_combinations;
int n_iface_combinations;
u16 software_iftypes;
u16 n_addresses;
/* Supported interface modes, OR together BIT(NL80211_IFTYPE_...) */
u16 interface_modes;
u16 max_acl_mac_addrs;
u32 flags, regulatory_flags, features;
u32 ap_sme_capa;
enum cfg80211_signal_type signal_type;
int bss_priv_size;
u8 max_scan_ssids;
u8 max_sched_scan_ssids;
u8 max_match_sets;
u16 max_scan_ie_len;
u16 max_sched_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_FWVERS_LEN];
u32 hw_version;
#ifdef CONFIG_PM
const struct wiphy_wowlan_support *wowlan;
struct cfg80211_wowlan *wowlan_config;
#endif
u16 max_remain_on_channel_duration;
u8 max_num_pmkids;
u32 available_antennas_tx;
u32 available_antennas_rx;
/*
* Bitmap of supported protocols for probe response offloading
* see &enum nl80211_probe_resp_offload_support_attr. Only valid
* when the wiphy flag @WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD is set.
*/
u32 probe_resp_offload;
const u8 *extended_capabilities, *extended_capabilities_mask;
u8 extended_capabilities_len;
/* 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 */
void (*reg_notifier)(struct wiphy *wiphy,
struct regulatory_request *request);
/* fields below are read-only, assigned by cfg80211 */
const struct ieee80211_regdomain __rcu *regd;
/* the item in /sys/class/ieee80211/ points to this,
* you need use set_wiphy_dev() (see below) */
struct device dev;
/* protects ->resume, ->suspend sysfs callbacks against unregister hw */
bool registered;
/* dir in debugfs: ieee80211/<wiphyname> */
struct dentry *debugfsdir;
const struct ieee80211_ht_cap *ht_capa_mod_mask;
const struct ieee80211_vht_cap *vht_capa_mod_mask;
#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
const struct wiphy_coalesce_support *coalesce;
const struct wiphy_vendor_command *vendor_commands;
const struct nl80211_vendor_cmd_info *vendor_events;
int n_vendor_commands, n_vendor_events;
u16 max_ap_assoc_sta;
char priv[0] __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
* Return: The priv of @wiphy.
*/
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
* Return: The wiphy of @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
* Return: The dev of @wiphy.
*/
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
* Return: The name of @wiphy.
*/
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.
*
* Return: A pointer to the new wiphy. This 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.
*
* Return: A non-negative wiphy index or a negative error code.
*/
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.
*/
void wiphy_unregister(struct wiphy *wiphy);
/**
* wiphy_free - free wiphy
*
* @wiphy: The wiphy to free
*/
void wiphy_free(struct wiphy *wiphy);
/* internal structs */
struct cfg80211_conn;
struct cfg80211_internal_bss;
struct cfg80211_cached_keys;
/**
* struct wireless_dev - wireless device state
*
* For netdevs, this structure must be allocated by the driver
* that uses the ieee80211_ptr field in struct net_device (this
* is intentional so it can be allocated along with the netdev.)
* It need not be registered then as netdev registration will
* be intercepted by cfg80211 to see the new wireless device.
*
* For non-netdev uses, it must also be allocated by the driver
* in response to the cfg80211 callbacks that require it, as
* there's no netdev registration in that case it may not be
* allocated outside of callback operations that return it.
*
* @wiphy: pointer to hardware description
* @iftype: interface type
* @list: (private) Used to collect the interfaces
* @netdev: (private) Used to reference back to the netdev, may be %NULL
* @identifier: (private) Identifier used in nl80211 to identify this
* wireless device if it has no netdev
* @current_bss: (private) Used by the internal configuration code
* @chandef: (private) Used by the internal configuration code to track
* the user-set channel definition.
* @preset_chandef: (private) Used by the internal configuration code to
* track the channel to be used for AP later
* @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, may be used by drivers
* and some API functions require it held
* @beacon_interval: beacon interval used on this device for transmitting
* beacons, 0 when not valid
* @address: The address for this device, valid only if @netdev is %NULL
* @p2p_started: true if this is a P2P Device that has been started
* @cac_started: true if DFS channel availability check has been started
* @cac_start_time: timestamp (jiffies) when the dfs state was entered.
* @cac_time_ms: CAC time in ms
* @ps: powersave mode is enabled
* @ps_timeout: dynamic powersave timeout
* @ap_unexpected_nlportid: (private) netlink port ID of application
* registered for unexpected class 3 frames (AP mode)
* @conn: (private) cfg80211 software SME connection state machine data
* @connect_keys: (private) keys to set after connection is established
* @ibss_fixed: (private) IBSS is using fixed BSSID
* @ibss_dfs_possible: (private) IBSS may change to a DFS channel
* @event_list: (private) list for internal event processing
* @event_lock: (private) lock for event list
* @owner_nlportid: (private) owner socket port ID
*/
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;
u32 identifier;
struct list_head mgmt_registrations;
spinlock_t mgmt_registrations_lock;
struct mutex mtx;
bool use_4addr, p2p_started;
u8 address[ETH_ALEN] __aligned(sizeof(u16));
/* 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;
struct cfg80211_conn *conn;
struct cfg80211_cached_keys *connect_keys;
struct list_head event_list;
spinlock_t event_lock;
struct cfg80211_internal_bss *current_bss; /* associated / joined */
struct cfg80211_chan_def preset_chandef;
struct cfg80211_chan_def chandef;
bool ibss_fixed;
bool ibss_dfs_possible;
bool ps;
int ps_timeout;
int beacon_interval;
u32 ap_unexpected_nlportid;
bool cac_started;
unsigned long cac_start_time;
unsigned int cac_time_ms;
u32 owner_nlportid;
#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
};
static inline u8 *wdev_address(struct wireless_dev *wdev)
{
if (wdev->netdev)
return wdev->netdev->dev_addr;
return wdev->address;
}
/**
* wdev_priv - return wiphy priv from wireless_dev
*
* @wdev: The wireless device whose wiphy's priv pointer to return
* Return: The wiphy priv of @wdev.
*/
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
* Return: The corresponding frequency (in MHz), or 0 if the conversion failed.
*/
int ieee80211_channel_to_frequency(int chan, enum ieee80211_band band);
/**
* ieee80211_frequency_to_channel - convert frequency to channel number
* @freq: center frequency
* Return: The corresponding channel, or 0 if the conversion failed.
*/
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.
*/
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
* Return: The channel struct from @wiphy at @freq.
*/
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
*
* Return: 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);
/**
* ieee80211_mandatory_rates - get mandatory rates for a given band
* @sband: the band to look for rates in
* @scan_width: width of the control channel
*
* This function returns a bitmap of the mandatory rates for the given
* band, bits are set according to the rate position in the bitrates array.
*/
u32 ieee80211_mandatory_rates(struct ieee80211_supported_band *sband,
enum nl80211_bss_scan_width scan_width);
/*
* 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;
};
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);
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
*
* @skb: the frame
*
* Given an skb with a raw 802.11 header at the data pointer this function
* returns the 802.11 header length.
*
* Return: The 802.11 header length in bytes (not including encryption
* headers). Or 0 if the data in the sk_buff is too short to contain a valid
* 802.11 header.
*/
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
* Return: The header length in bytes.
*/
unsigned int __attribute_const__ ieee80211_hdrlen(__le16 fc);
/**
* ieee80211_get_mesh_hdrlen - get mesh extension header length
* @meshhdr: the mesh extension header, only the flags field
* (first byte) will be accessed
* Return: The length of the extension header, which is always at
* least 6 bytes and at most 18 if address 5 and 6 are present.
*/
unsigned int ieee80211_get_mesh_hdrlen(struct ieee80211s_hdr *meshhdr);
/**
* 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
* Return: 0 on success. Non-zero on error.
*/
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
* Return: 0 on success, or a negative error code.
*/
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.
* @has_80211_header: Set it true if SKB is with IEEE 802.11 header.
*/
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,
bool has_80211_header);
/**
* cfg80211_classify8021d - determine the 802.1p/1d tag for a data frame
* @skb: the data frame
* @qos_map: Interworking QoS mapping or %NULL if not in use
* Return: The 802.1p/1d tag.
*/
unsigned int cfg80211_classify8021d(struct sk_buff *skb,
struct cfg80211_qos_map *qos_map);
/**
* cfg80211_find_ie - find information element in data
*
* @eid: element ID
* @ies: data consisting of IEs
* @len: length of data
*
* 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.
*
* Note: 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);
/**
* cfg80211_find_vendor_ie - find vendor specific information element in data
*
* @oui: vendor OUI
* @oui_type: vendor-specific OUI type
* @ies: data consisting of IEs
* @len: length of data
*
* Return: %NULL if the vendor specific 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.
*
* Note: There are no checks on the element length other than having to fit into
* the given data.
*/
const u8 *cfg80211_find_vendor_ie(unsigned int oui, u8 oui_type,
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.
*
* Return: 0 on success. -ENOMEM.
*/
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.
* Drivers using this for a wiphy should also set the wiphy flag
* WIPHY_FLAG_CUSTOM_REGULATORY or cfg80211 will set it for the wiphy
* that called this helper.
*/
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
*
* 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.
*
* Return: A valid pointer, or, when an error occurs, for example if no rule
* can be found, the return value is encoded using ERR_PTR(). Use IS_ERR() to
* check and PTR_ERR() to obtain the numeric return value. The numeric return
* value will be -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 it's 802.11 specific.
*/
const struct ieee80211_reg_rule *freq_reg_info(struct wiphy *wiphy,
u32 center_freq);
/**
* reg_initiator_name - map regulatory request initiator enum to name
* @initiator: the regulatory request initiator
*
* You can use this to map the regulatory request initiator enum to a
* proper string representation.
*/
const char *reg_initiator_name(enum nl80211_reg_initiator initiator);
/*
* 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_sched_scan_results - notify that new scan results are available
*
* @wiphy: the wiphy which got scheduled scan results
*/
void cfg80211_sched_scan_results(struct wiphy *wiphy);
/**
* cfg80211_sched_scan_stopped - notify that the scheduled scan has stopped
*
* @wiphy: the wiphy on which the scheduled scan stopped
*
* The driver can call this function to inform cfg80211 that the
* scheduled scan had to be stopped, for whatever reason. The driver
* is then called back via the sched_scan_stop operation when done.
*/
void cfg80211_sched_scan_stopped(struct wiphy *wiphy);
/**
* cfg80211_inform_bss_width_frame - inform cfg80211 of a received BSS frame
*
* @wiphy: the wiphy reporting the BSS
* @rx_channel: The channel the frame was received on
* @scan_width: width of the control channel
* @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.
*
* Return: A referenced struct, must be released with cfg80211_put_bss()!
* Or %NULL on error.
*/
struct cfg80211_bss * __must_check
cfg80211_inform_bss_width_frame(struct wiphy *wiphy,
struct ieee80211_channel *rx_channel,
enum nl80211_bss_scan_width scan_width,
struct ieee80211_mgmt *mgmt, size_t len,
s32 signal, gfp_t gfp);
static inline struct cfg80211_bss * __must_check
cfg80211_inform_bss_frame(struct wiphy *wiphy,
struct ieee80211_channel *rx_channel,
struct ieee80211_mgmt *mgmt, size_t len,
s32 signal, gfp_t gfp)
{
return cfg80211_inform_bss_width_frame(wiphy, rx_channel,
NL80211_BSS_CHAN_WIDTH_20,
mgmt, len, signal, gfp);
}
/**
* cfg80211_inform_bss - inform cfg80211 of a new BSS
*
* @wiphy: the wiphy reporting the BSS
* @rx_channel: The channel the frame was received on
* @scan_width: width of the control channel
* @bssid: the BSSID of the BSS
* @tsf: the TSF sent by the peer in the beacon/probe response (or 0)
* @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.
*
* Return: A referenced struct, must be released with cfg80211_put_bss()!
* Or %NULL on error.
*/
struct cfg80211_bss * __must_check
cfg80211_inform_bss_width(struct wiphy *wiphy,
struct ieee80211_channel *rx_channel,
enum nl80211_bss_scan_width scan_width,
const u8 *bssid, u64 tsf, u16 capability,
u16 beacon_interval, const u8 *ie, size_t ielen,
s32 signal, gfp_t gfp);
static inline struct cfg80211_bss * __must_check
cfg80211_inform_bss(struct wiphy *wiphy,
struct ieee80211_channel *rx_channel,
const u8 *bssid, u64 tsf, u16 capability,
u16 beacon_interval, const u8 *ie, size_t ielen,
s32 signal, gfp_t gfp)
{
return cfg80211_inform_bss_width(wiphy, rx_channel,
NL80211_BSS_CHAN_WIDTH_20,
bssid, tsf, capability,
beacon_interval, ie, ielen, signal,
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);
}
/**
* cfg80211_ref_bss - reference BSS struct
* @wiphy: the wiphy this BSS struct belongs to
* @bss: the BSS struct to reference
*
* Increments the refcount of the given BSS struct.
*/
void cfg80211_ref_bss(struct wiphy *wiphy, struct cfg80211_bss *bss);
/**
* cfg80211_put_bss - unref BSS struct
* @wiphy: the wiphy this BSS struct belongs to
* @bss: the BSS struct
*
* Decrements the refcount of the given BSS struct.
*/
void cfg80211_put_bss(struct wiphy *wiphy, 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);
static inline enum nl80211_bss_scan_width
cfg80211_chandef_to_scan_width(const struct cfg80211_chan_def *chandef)
{
switch (chandef->width) {
case NL80211_CHAN_WIDTH_5:
return NL80211_BSS_CHAN_WIDTH_5;
case NL80211_CHAN_WIDTH_10:
return NL80211_BSS_CHAN_WIDTH_10;
default:
return NL80211_BSS_CHAN_WIDTH_20;
}
}
/**
* cfg80211_rx_mlme_mgmt - notification of processed MLME management frame
* @dev: network device
* @buf: authentication frame (header + body)
* @len: length of the frame data
*
* This function is called whenever an authentication, disassociation or
* deauthentication frame has been received and processed in station mode.
* After being asked to authenticate via cfg80211_ops::auth() the driver must
* call either this function or cfg80211_auth_timeout().
* After being asked to associate via cfg80211_ops::assoc() the driver must
* call either this function or cfg80211_auth_timeout().
* While connected, the driver must calls this for received and processed
* disassociation and deauthentication frames. If the frame couldn't be used
* because it was unprotected, the driver must call the function
* cfg80211_rx_unprot_mlme_mgmt() instead.
*
* This function may sleep. The caller must hold the corresponding wdev's mutex.
*/
void cfg80211_rx_mlme_mgmt(struct net_device *dev, const u8 *buf, size_t len);
/**
* cfg80211_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. The caller must hold the corresponding wdev's
* mutex.
*/
void cfg80211_auth_timeout(struct net_device *dev, const u8 *addr);
/**
* cfg80211_rx_assoc_resp - notification of processed association response
* @dev: network device
* @bss: the BSS that association was requested with, ownership of the pointer
* moves to cfg80211 in this call
* @buf: authentication frame (header + body)
* @len: length of the frame data
*
* After being asked to associate via cfg80211_ops::assoc() the driver must
* call either this function or cfg80211_auth_timeout().
*
* This function may sleep. The caller must hold the corresponding wdev's mutex.
*/
void cfg80211_rx_assoc_resp(struct net_device *dev,
struct cfg80211_bss *bss,
const u8 *buf, size_t len);
/**
* cfg80211_assoc_timeout - notification of timed out association
* @dev: network device
* @bss: The BSS entry with which association timed out.
*
* This function may sleep. The caller must hold the corresponding wdev's mutex.
*/
void cfg80211_assoc_timeout(struct net_device *dev, struct cfg80211_bss *bss);
/**
* cfg80211_tx_mlme_mgmt - notification of transmitted deauth/disassoc frame
* @dev: network device
* @buf: 802.11 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. The caller must hold the
* corresponding wdev's mutex.
*/
void cfg80211_tx_mlme_mgmt(struct net_device *dev, const u8 *buf, size_t len);
/**
* cfg80211_rx_unprot_mlme_mgmt - notification of unprotected mlme mgmt frame
* @dev: network device
* @buf: deauthentication frame (header + body)
* @len: length of the frame data
*
* This function is called whenever a received deauthentication or dissassoc
* frame has been dropped in station mode because of MFP being used but the
* frame was not protected. This function may sleep.
*/
void cfg80211_rx_unprot_mlme_mgmt(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). Can be -1 if missing.
* @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
* @channel: the channel 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,
struct ieee80211_channel *channel, gfp_t gfp);
/**
* cfg80211_notify_new_candidate - notify cfg80211 of a new mesh peer candidate
*
* @dev: network device
* @macaddr: the MAC address of the new candidate
* @ie: information elements advertised by the peer candidate
* @ie_len: lenght of the information elements buffer
* @gfp: allocation flags
*
* This function notifies cfg80211 that the mesh peer candidate has been
* detected, most likely via a beacon or, less likely, via a probe response.
* cfg80211 then sends a notification to userspace.
*/
void cfg80211_notify_new_peer_candidate(struct net_device *dev,
const u8 *macaddr, const u8 *ie, u8 ie_len, 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);
/**
* DOC: Vendor commands
*
* Occasionally, there are special protocol or firmware features that
* can't be implemented very openly. For this and similar cases, the
* vendor command functionality allows implementing the features with
* (typically closed-source) userspace and firmware, using nl80211 as
* the configuration mechanism.
*
* A driver supporting vendor commands must register them as an array
* in struct wiphy, with handlers for each one, each command has an
* OUI and sub command ID to identify it.
*
* Note that this feature should not be (ab)used to implement protocol
* features that could openly be shared across drivers. In particular,
* it must never be required to use vendor commands to implement any
* "normal" functionality that higher-level userspace like connection
* managers etc. need.
*/
struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
enum nl80211_commands cmd,
enum nl80211_attrs attr,
int approxlen);
struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
enum nl80211_commands cmd,
enum nl80211_attrs attr,
int vendor_event_idx,
int approxlen, gfp_t gfp);
void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp);
/**
* cfg80211_vendor_cmd_alloc_reply_skb - allocate vendor command 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
* a vendor command. Since it is intended for a reply, calling
* it outside of a vendor command's doit() operation is invalid.
*
* The returned skb is pre-filled with some identifying data 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_VENDOR_DATA 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 vendor data attribute.
* You must not modify the skb in any other way.
*
* When done, call cfg80211_vendor_cmd_reply() with the skb and return
* its error code as the result of the doit() operation.
*
* Return: An allocated and pre-filled skb. %NULL if any errors happen.
*/
static inline struct sk_buff *
cfg80211_vendor_cmd_alloc_reply_skb(struct wiphy *wiphy, int approxlen)
{
return __cfg80211_alloc_reply_skb(wiphy, NL80211_CMD_VENDOR,
NL80211_ATTR_VENDOR_DATA, approxlen);
}
/**
* cfg80211_vendor_cmd_reply - send the reply skb
* @skb: The skb, must have been allocated with
* cfg80211_vendor_cmd_alloc_reply_skb()
*
* Since calling this function will usually be the last thing
* before returning from the vendor command doit() you should
* return the error code. Note that this function consumes the
* skb regardless of the return value.
*
* Return: An error code or 0 on success.
*/
int cfg80211_vendor_cmd_reply(struct sk_buff *skb);
/**
* cfg80211_vendor_event_alloc - allocate vendor-specific event skb
* @wiphy: the wiphy
* @event_idx: index of the vendor event in the wiphy's vendor_events
* @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
* vendor-specific multicast group.
*
* When done filling the skb, call cfg80211_vendor_event() with the
* skb to send the event.
*
* Return: An allocated and pre-filled skb. %NULL if any errors happen.
*/
static inline struct sk_buff *
cfg80211_vendor_event_alloc(struct wiphy *wiphy, int approxlen,
int event_idx, gfp_t gfp)
{
return __cfg80211_alloc_event_skb(wiphy, NL80211_CMD_VENDOR,
NL80211_ATTR_VENDOR_DATA,
event_idx, approxlen, gfp);
}
/**
* cfg80211_vendor_event - send the event
* @skb: The skb, must have been allocated with cfg80211_vendor_event_alloc()
* @gfp: allocation flags
*
* This function sends the given @skb, which must have been allocated
* by cfg80211_vendor_event_alloc(), as an event. It always consumes it.
*/
static inline void cfg80211_vendor_event(struct sk_buff *skb, gfp_t gfp)
{
__cfg80211_send_event_skb(skb, gfp);
}
#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 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.
*
* Return: An allocated and pre-filled skb. %NULL if any errors happen.
*/
static inline struct sk_buff *
cfg80211_testmode_alloc_reply_skb(struct wiphy *wiphy, int approxlen)
{
return __cfg80211_alloc_reply_skb(wiphy, NL80211_CMD_TESTMODE,
NL80211_ATTR_TESTDATA, approxlen);
}
/**
* cfg80211_testmode_reply - send the reply skb
* @skb: The skb, must have been allocated with
* cfg80211_testmode_alloc_reply_skb()
*
* 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.
*
* Return: An error code or 0 on success.
*/
static inline int cfg80211_testmode_reply(struct sk_buff *skb)
{
return cfg80211_vendor_cmd_reply(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 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.
*
* Return: An allocated and pre-filled skb. %NULL if any errors happen.
*/
static inline struct sk_buff *
cfg80211_testmode_alloc_event_skb(struct wiphy *wiphy, int approxlen, gfp_t gfp)
{
return __cfg80211_alloc_event_skb(wiphy, NL80211_CMD_TESTMODE,
NL80211_ATTR_TESTDATA, -1,
approxlen, 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.
*/
static inline void cfg80211_testmode_event(struct sk_buff *skb, gfp_t gfp)
{
__cfg80211_send_event_skb(skb, gfp);
}
#define CFG80211_TESTMODE_CMD(cmd) .testmode_cmd = (cmd),
#define CFG80211_TESTMODE_DUMP(cmd) .testmode_dump = (cmd),
#else
#define CFG80211_TESTMODE_CMD(cmd)
#define CFG80211_TESTMODE_DUMP(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
* @channel: the channel of the new AP
* @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,
struct ieee80211_channel *channel,
const u8 *bssid,
const u8 *req_ie, size_t req_ie_len,
const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp);
/**
* cfg80211_roamed_bss - notify cfg80211 of roaming
*
* @dev: network device
* @bss: entry of bss to which STA got roamed
* @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
*
* This is just a wrapper to notify cfg80211 of roaming event with driver
* passing bss to avoid a race in timeout of the bss entry. It should be
* called by the underlying driver whenever it roamed from one AP to another
* while connected. Drivers which have roaming implemented in firmware
* may use this function to avoid a race in bss entry timeout where the bss
* entry of the new AP is seen in the driver, but gets timed out by the time
* it is accessed in __cfg80211_roamed() due to delay in scheduling
* rdev->event_work. In case of any failures, the reference is released
* either in cfg80211_roamed_bss() or in __cfg80211_romed(), Otherwise,
* it will be released while diconneting from the current bss.
*/
void cfg80211_roamed_bss(struct net_device *dev, struct cfg80211_bss *bss,
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
* @wdev: wireless device
* @cookie: the request cookie
* @chan: The current channel (from remain_on_channel request)
* @duration: Duration in milliseconds that the driver intents to remain on the
* channel
* @gfp: allocation flags
*/
void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
struct ieee80211_channel *chan,
unsigned int duration, gfp_t gfp);
/**
* cfg80211_remain_on_channel_expired - remain_on_channel duration expired
* @wdev: wireless device
* @cookie: the request cookie
* @chan: The current channel (from remain_on_channel request)
* @gfp: allocation flags
*/
void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
struct ieee80211_channel *chan,
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_del_sta - notify userspace about deletion of a station
*
* @dev: the netdev
* @mac_addr: the station's address
* @gfp: allocation flags
*/
void cfg80211_del_sta(struct net_device *dev, const u8 *mac_addr, gfp_t gfp);
/**
* cfg80211_conn_failed - connection request failed notification
*
* @dev: the netdev
* @mac_addr: the station's address
* @reason: the reason for connection failure
* @gfp: allocation flags
*
* Whenever a station tries to connect to an AP and if the station
* could not connect to the AP as the AP has rejected the connection
* for some reasons, this function is called.
*
* The reason for connection failure can be any of the value from
* nl80211_connect_failed_reason enum
*/
void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
enum nl80211_connect_failed_reason reason,
gfp_t gfp);
/**
* cfg80211_rx_mgmt - notification of received, unprocessed management frame
* @wdev: wireless device receiving the frame
* @freq: Frequency on which the frame was received in MHz
* @sig_dbm: signal strength in mBm, or 0 if unknown
* @buf: Management frame (header + body)
* @len: length of the frame data
* @flags: flags, as defined in enum nl80211_rxmgmt_flags
* @gfp: context flags
*
* This function is called whenever an Action frame is received for a station
* mode interface, but is not processed in kernel.
*
* Return: %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.
*/
bool cfg80211_rx_mgmt(struct wireless_dev *wdev, int freq, int sig_dbm,
const u8 *buf, size_t len, u32 flags, gfp_t gfp);
/**
* cfg80211_mgmt_tx_status - notification of TX status for management frame
* @wdev: wireless device receiving the frame
* @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 wireless_dev *wdev, 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_radar_event - radar detection event
* @wiphy: the wiphy
* @chandef: chandef for the current channel
* @gfp: context flags
*
* This function is called when a radar is detected on the current chanenl.
*/
void cfg80211_radar_event(struct wiphy *wiphy,
struct cfg80211_chan_def *chandef, gfp_t gfp);
/**
* cfg80211_cac_event - Channel availability check (CAC) event
* @netdev: network device
* @chandef: chandef for the current channel
* @event: type of event
* @gfp: context flags
*
* This function is called when a Channel availability check (CAC) is finished
* or aborted. This must be called to notify the completion of a CAC process,
* also by full-MAC drivers.
*/
void cfg80211_cac_event(struct net_device *netdev,
const struct cfg80211_chan_def *chandef,
enum nl80211_radar_event 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);
/**
* cfg80211_cqm_txe_notify - TX error rate event
* @dev: network device
* @peer: peer's MAC address
* @num_packets: how many packets were lost
* @rate: % of packets which failed transmission
* @intvl: interval (in s) over which the TX failure threshold was breached.
* @gfp: context flags
*
* Notify userspace when configured % TX failures over number of packets in a
* given interval is exceeded.
*/
void cfg80211_cqm_txe_notify(struct net_device *dev, const u8 *peer,
u32 num_packets, u32 rate, u32 intvl, gfp_t gfp);
/**
* cfg80211_gtk_rekey_notify - notify userspace about driver rekeying
* @dev: network device
* @bssid: BSSID of AP (to avoid races)
* @replay_ctr: new replay counter
* @gfp: allocation flags
*/
void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
const u8 *replay_ctr, gfp_t gfp);
/**
* cfg80211_pmksa_candidate_notify - notify about PMKSA caching candidate
* @dev: network device
* @index: candidate index (the smaller the index, the higher the priority)
* @bssid: BSSID of AP
* @preauth: Whether AP advertises support for RSN pre-authentication
* @gfp: allocation flags
*/
void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
const u8 *bssid, bool preauth, gfp_t gfp);
/**
* cfg80211_rx_spurious_frame - inform userspace about a spurious frame
* @dev: The device the frame matched to
* @addr: the transmitter address
* @gfp: context flags
*
* This function is used in AP mode (only!) to inform userspace that
* a spurious class 3 frame was received, to be able to deauth the
* sender.
* Return: %true if the frame was passed to userspace (or this failed
* for a reason other than not having a subscription.)
*/
bool cfg80211_rx_spurious_frame(struct net_device *dev,
const u8 *addr, gfp_t gfp);
/**
* cfg80211_rx_unexpected_4addr_frame - inform about unexpected WDS frame
* @dev: The device the frame matched to
* @addr: the transmitter address
* @gfp: context flags
*
* This function is used in AP mode (only!) to inform userspace that
* an associated station sent a 4addr frame but that wasn't expected.
* It is allowed and desirable to send this event only once for each
* station to avoid event flooding.
* Return: %true if the frame was passed to userspace (or this failed
* for a reason other than not having a subscription.)
*/
bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
const u8 *addr, gfp_t gfp);
/**
* cfg80211_probe_status - notify userspace about probe status
* @dev: the device the probe was sent on
* @addr: the address of the peer
* @cookie: the cookie filled in @probe_client previously
* @acked: indicates whether probe was acked or not
* @gfp: allocation flags
*/
void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
u64 cookie, bool acked, gfp_t gfp);
/**
* cfg80211_report_obss_beacon - report beacon from other APs
* @wiphy: The wiphy that received the beacon
* @frame: the frame
* @len: length of the frame
* @freq: frequency the frame was received on
* @sig_dbm: signal strength in mBm, or 0 if unknown
*
* Use this function to report to userspace when a beacon was
* received. It is not useful to call this when there is no
* netdev that is in AP/GO mode.
*/
void cfg80211_report_obss_beacon(struct wiphy *wiphy,
const u8 *frame, size_t len,
int freq, int sig_dbm);
/**
* cfg80211_reg_can_beacon - check if beaconing is allowed
* @wiphy: the wiphy
* @chandef: the channel definition
*
* Return: %true if there is no secondary channel or the secondary channel(s)
* can be used for beaconing (i.e. is not a radar channel etc.)
*/
bool cfg80211_reg_can_beacon(struct wiphy *wiphy,
struct cfg80211_chan_def *chandef);
/*
* cfg80211_ch_switch_notify - update wdev channel and notify userspace
* @dev: the device which switched channels
* @chandef: the new channel definition
*
* Caller must acquire wdev_lock, therefore must only be called from sleepable
* driver context!
*/
void cfg80211_ch_switch_notify(struct net_device *dev,
struct cfg80211_chan_def *chandef);
/**
* ieee80211_operating_class_to_band - convert operating class to band
*
* @operating_class: the operating class to convert
* @band: band pointer to fill
*
* Returns %true if the conversion was successful, %false otherwise.
*/
bool ieee80211_operating_class_to_band(u8 operating_class,
enum ieee80211_band *band);
/*
* cfg80211_tdls_oper_request - request userspace to perform TDLS operation
* @dev: the device on which the operation is requested
* @peer: the MAC address of the peer device
* @oper: the requested TDLS operation (NL80211_TDLS_SETUP or
* NL80211_TDLS_TEARDOWN)
* @reason_code: the reason code for teardown request
* @gfp: allocation flags
*
* This function is used to request userspace to perform TDLS operation that
* requires knowledge of keys, i.e., link setup or teardown when the AP
* connection uses encryption. This is optional mechanism for the driver to use
* if it can automatically determine when a TDLS link could be useful (e.g.,
* based on traffic and signal strength for a peer).
*/
void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
enum nl80211_tdls_operation oper,
u16 reason_code, gfp_t gfp);
/*
* cfg80211_calculate_bitrate - calculate actual bitrate (in 100Kbps units)
* @rate: given rate_info to calculate bitrate from
*
* return 0 if MCS index >= 32
*/
u32 cfg80211_calculate_bitrate(struct rate_info *rate);
/**
* cfg80211_unregister_wdev - remove the given wdev
* @wdev: struct wireless_dev to remove
*
* Call this function only for wdevs that have no netdev assigned,
* e.g. P2P Devices. It removes the device from the list so that
* it can no longer be used. It is necessary to call this function
* even when cfg80211 requests the removal of the interface by
* calling the del_virtual_intf() callback. The function must also
* be called when the driver wishes to unregister the wdev, e.g.
* when the device is unbound from the driver.
*
* Requires the RTNL to be held.
*/
void cfg80211_unregister_wdev(struct wireless_dev *wdev);
/**
* struct cfg80211_ft_event - FT Information Elements
* @ies: FT IEs
* @ies_len: length of the FT IE in bytes
* @target_ap: target AP's MAC address
* @ric_ies: RIC IE
* @ric_ies_len: length of the RIC IE in bytes
*/
struct cfg80211_ft_event_params {
const u8 *ies;
size_t ies_len;
const u8 *target_ap;
const u8 *ric_ies;
size_t ric_ies_len;
};
/**
* cfg80211_ft_event - notify userspace about FT IE and RIC IE
* @netdev: network device
* @ft_event: IE information
*/
void cfg80211_ft_event(struct net_device *netdev,
struct cfg80211_ft_event_params *ft_event);
/**
* cfg80211_get_p2p_attr - find and copy a P2P attribute from IE buffer
* @ies: the input IE buffer
* @len: the input length
* @attr: the attribute ID to find
* @buf: output buffer, can be %NULL if the data isn't needed, e.g.
* if the function is only called to get the needed buffer size
* @bufsize: size of the output buffer
*
* The function finds a given P2P attribute in the (vendor) IEs and
* copies its contents to the given buffer.
*
* Return: A negative error code (-%EILSEQ or -%ENOENT) if the data is
* malformed or the attribute can't be found (respectively), or the
* length of the found attribute (which can be zero).
*/
int cfg80211_get_p2p_attr(const u8 *ies, unsigned int len,
enum ieee80211_p2p_attr_id attr,
u8 *buf, unsigned int bufsize);
/**
* cfg80211_report_wowlan_wakeup - report wakeup from WoWLAN
* @wdev: the wireless device reporting the wakeup
* @wakeup: the wakeup report
* @gfp: allocation flags
*
* This function reports that the given device woke up. If it
* caused the wakeup, report the reason(s), otherwise you may
* pass %NULL as the @wakeup parameter to advertise that something
* else caused the wakeup.
*/
void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
struct cfg80211_wowlan_wakeup *wakeup,
gfp_t gfp);
/**
* cfg80211_crit_proto_stopped() - indicate critical protocol stopped by driver.
*
* @wdev: the wireless device for which critical protocol is stopped.
* @gfp: allocation flags
*
* This function can be called by the driver to indicate it has reverted
* operation back to normal. One reason could be that the duration given
* by .crit_proto_start() has expired.
*/
void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp);
/**
* ieee80211_get_num_supported_channels - get number of channels device has
* @wiphy: the wiphy
*
* Return: the number of channels supported by the device.
*/
unsigned int ieee80211_get_num_supported_channels(struct wiphy *wiphy);
/* 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 */