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cfg80211.h
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/* SPDX-License-Identifier: GPL-2.0-only */
#ifndef __NET_CFG80211_H
#define __NET_CFG80211_H
/*
* 802.11 device and configuration interface
*
* Copyright 2006-2010 Johannes Berg <[email protected]>
* Copyright 2013-2014 Intel Mobile Communications GmbH
* Copyright 2015-2017 Intel Deutschland GmbH
* Copyright (C) 2018-2021, 2023 Intel Corporation
*/
#include <linux/ethtool.h>
#include <uapi/linux/rfkill.h>
#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 <linux/rfkill.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_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.
* @IEEE80211_CHAN_INDOOR_ONLY: see %NL80211_FREQUENCY_ATTR_INDOOR_ONLY
* @IEEE80211_CHAN_IR_CONCURRENT: see %NL80211_FREQUENCY_ATTR_IR_CONCURRENT
* @IEEE80211_CHAN_NO_20MHZ: 20 MHz bandwidth is not permitted
* on this channel.
* @IEEE80211_CHAN_NO_10MHZ: 10 MHz bandwidth is not permitted
* on this channel.
* @IEEE80211_CHAN_NO_HE: HE operation is not permitted on this channel.
* @IEEE80211_CHAN_1MHZ: 1 MHz bandwidth is permitted
* on this channel.
* @IEEE80211_CHAN_2MHZ: 2 MHz bandwidth is permitted
* on this channel.
* @IEEE80211_CHAN_4MHZ: 4 MHz bandwidth is permitted
* on this channel.
* @IEEE80211_CHAN_8MHZ: 8 MHz bandwidth is permitted
* on this channel.
* @IEEE80211_CHAN_16MHZ: 16 MHz bandwidth is permitted
* on this channel.
* @IEEE80211_CHAN_NO_320MHZ: If the driver supports 320 MHz on the band,
* this flag indicates that a 320 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_EHT: EHT operation is not permitted on this channel.
*/
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,
IEEE80211_CHAN_INDOOR_ONLY = 1<<9,
IEEE80211_CHAN_IR_CONCURRENT = 1<<10,
IEEE80211_CHAN_NO_20MHZ = 1<<11,
IEEE80211_CHAN_NO_10MHZ = 1<<12,
IEEE80211_CHAN_NO_HE = 1<<13,
IEEE80211_CHAN_1MHZ = 1<<14,
IEEE80211_CHAN_2MHZ = 1<<15,
IEEE80211_CHAN_4MHZ = 1<<16,
IEEE80211_CHAN_8MHZ = 1<<17,
IEEE80211_CHAN_16MHZ = 1<<18,
IEEE80211_CHAN_NO_320MHZ = 1<<19,
IEEE80211_CHAN_NO_EHT = 1<<20,
};
#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
* @freq_offset: offset from @center_freq, in KHz
* @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 nl80211_band band;
u32 center_freq;
u16 freq_offset;
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,
};
/**
* enum ieee80211_bss_type - BSS type filter
*
* @IEEE80211_BSS_TYPE_ESS: Infrastructure BSS
* @IEEE80211_BSS_TYPE_PBSS: Personal BSS
* @IEEE80211_BSS_TYPE_IBSS: Independent BSS
* @IEEE80211_BSS_TYPE_MBSS: Mesh BSS
* @IEEE80211_BSS_TYPE_ANY: Wildcard value for matching any BSS type
*/
enum ieee80211_bss_type {
IEEE80211_BSS_TYPE_ESS,
IEEE80211_BSS_TYPE_PBSS,
IEEE80211_BSS_TYPE_IBSS,
IEEE80211_BSS_TYPE_MBSS,
IEEE80211_BSS_TYPE_ANY
};
/**
* enum ieee80211_privacy - BSS privacy filter
*
* @IEEE80211_PRIVACY_ON: privacy bit set
* @IEEE80211_PRIVACY_OFF: privacy bit clear
* @IEEE80211_PRIVACY_ANY: Wildcard value for matching any privacy setting
*/
enum ieee80211_privacy {
IEEE80211_PRIVACY_ON,
IEEE80211_PRIVACY_OFF,
IEEE80211_PRIVACY_ANY
};
#define IEEE80211_PRIVACY(x) \
((x) ? IEEE80211_PRIVACY_ON : IEEE80211_PRIVACY_OFF)
/**
* 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 from &enum ieee80211_rate_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_he_obss_pd - AP settings for spatial reuse
*
* @enable: is the feature enabled.
* @sr_ctrl: The SR Control field of SRP element.
* @non_srg_max_offset: non-SRG maximum tx power offset
* @min_offset: minimal tx power offset an associated station shall use
* @max_offset: maximum tx power offset an associated station shall use
* @bss_color_bitmap: bitmap that indicates the BSS color values used by
* members of the SRG
* @partial_bssid_bitmap: bitmap that indicates the partial BSSID values
* used by members of the SRG
*/
struct ieee80211_he_obss_pd {
bool enable;
u8 sr_ctrl;
u8 non_srg_max_offset;
u8 min_offset;
u8 max_offset;
u8 bss_color_bitmap[8];
u8 partial_bssid_bitmap[8];
};
/**
* struct cfg80211_he_bss_color - AP settings for BSS coloring
*
* @color: the current color.
* @enabled: HE BSS color is used
* @partial: define the AID equation.
*/
struct cfg80211_he_bss_color {
u8 color;
bool enabled;
bool partial;
};
/**
* 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;
};
#define IEEE80211_HE_PPE_THRES_MAX_LEN 25
/**
* struct ieee80211_sta_he_cap - STA's HE capabilities
*
* This structure describes most essential parameters needed
* to describe 802.11ax HE capabilities for a STA.
*
* @has_he: true iff HE data is valid.
* @he_cap_elem: Fixed portion of the HE capabilities element.
* @he_mcs_nss_supp: The supported NSS/MCS combinations.
* @ppe_thres: Holds the PPE Thresholds data.
*/
struct ieee80211_sta_he_cap {
bool has_he;
struct ieee80211_he_cap_elem he_cap_elem;
struct ieee80211_he_mcs_nss_supp he_mcs_nss_supp;
u8 ppe_thres[IEEE80211_HE_PPE_THRES_MAX_LEN];
};
/**
* struct ieee80211_eht_mcs_nss_supp - EHT max supported NSS per MCS
*
* See P802.11be_D1.3 Table 9-401k - "Subfields of the Supported EHT-MCS
* and NSS Set field"
*
* @only_20mhz: MCS/NSS support for 20 MHz-only STA.
* @bw: MCS/NSS support for 80, 160 and 320 MHz
* @bw._80: MCS/NSS support for BW <= 80 MHz
* @bw._160: MCS/NSS support for BW = 160 MHz
* @bw._320: MCS/NSS support for BW = 320 MHz
*/
struct ieee80211_eht_mcs_nss_supp {
union {
struct ieee80211_eht_mcs_nss_supp_20mhz_only only_20mhz;
struct {
struct ieee80211_eht_mcs_nss_supp_bw _80;
struct ieee80211_eht_mcs_nss_supp_bw _160;
struct ieee80211_eht_mcs_nss_supp_bw _320;
} __packed bw;
} __packed;
} __packed;
#define IEEE80211_EHT_PPE_THRES_MAX_LEN 32
/**
* struct ieee80211_sta_eht_cap - STA's EHT capabilities
*
* This structure describes most essential parameters needed
* to describe 802.11be EHT capabilities for a STA.
*
* @has_eht: true iff EHT data is valid.
* @eht_cap_elem: Fixed portion of the eht capabilities element.
* @eht_mcs_nss_supp: The supported NSS/MCS combinations.
* @eht_ppe_thres: Holds the PPE Thresholds data.
*/
struct ieee80211_sta_eht_cap {
bool has_eht;
struct ieee80211_eht_cap_elem_fixed eht_cap_elem;
struct ieee80211_eht_mcs_nss_supp eht_mcs_nss_supp;
u8 eht_ppe_thres[IEEE80211_EHT_PPE_THRES_MAX_LEN];
};
/**
* struct ieee80211_sband_iftype_data - sband data per interface type
*
* This structure encapsulates sband data that is relevant for the
* interface types defined in @types_mask. Each type in the
* @types_mask must be unique across all instances of iftype_data.
*
* @types_mask: interface types mask
* @he_cap: holds the HE capabilities
* @he_6ghz_capa: HE 6 GHz capabilities, must be filled in for a
* 6 GHz band channel (and 0 may be valid value).
* @eht_cap: STA's EHT capabilities
* @vendor_elems: vendor element(s) to advertise
* @vendor_elems.data: vendor element(s) data
* @vendor_elems.len: vendor element(s) length
*/
struct ieee80211_sband_iftype_data {
u16 types_mask;
struct ieee80211_sta_he_cap he_cap;
struct ieee80211_he_6ghz_capa he_6ghz_capa;
struct ieee80211_sta_eht_cap eht_cap;
struct {
const u8 *data;
unsigned int len;
} vendor_elems;
};
/**
* enum ieee80211_edmg_bw_config - allowed channel bandwidth configurations
*
* @IEEE80211_EDMG_BW_CONFIG_4: 2.16GHz
* @IEEE80211_EDMG_BW_CONFIG_5: 2.16GHz and 4.32GHz
* @IEEE80211_EDMG_BW_CONFIG_6: 2.16GHz, 4.32GHz and 6.48GHz
* @IEEE80211_EDMG_BW_CONFIG_7: 2.16GHz, 4.32GHz, 6.48GHz and 8.64GHz
* @IEEE80211_EDMG_BW_CONFIG_8: 2.16GHz and 2.16GHz + 2.16GHz
* @IEEE80211_EDMG_BW_CONFIG_9: 2.16GHz, 4.32GHz and 2.16GHz + 2.16GHz
* @IEEE80211_EDMG_BW_CONFIG_10: 2.16GHz, 4.32GHz, 6.48GHz and 2.16GHz+2.16GHz
* @IEEE80211_EDMG_BW_CONFIG_11: 2.16GHz, 4.32GHz, 6.48GHz, 8.64GHz and
* 2.16GHz+2.16GHz
* @IEEE80211_EDMG_BW_CONFIG_12: 2.16GHz, 2.16GHz + 2.16GHz and
* 4.32GHz + 4.32GHz
* @IEEE80211_EDMG_BW_CONFIG_13: 2.16GHz, 4.32GHz, 2.16GHz + 2.16GHz and
* 4.32GHz + 4.32GHz
* @IEEE80211_EDMG_BW_CONFIG_14: 2.16GHz, 4.32GHz, 6.48GHz, 2.16GHz + 2.16GHz
* and 4.32GHz + 4.32GHz
* @IEEE80211_EDMG_BW_CONFIG_15: 2.16GHz, 4.32GHz, 6.48GHz, 8.64GHz,
* 2.16GHz + 2.16GHz and 4.32GHz + 4.32GHz
*/
enum ieee80211_edmg_bw_config {
IEEE80211_EDMG_BW_CONFIG_4 = 4,
IEEE80211_EDMG_BW_CONFIG_5 = 5,
IEEE80211_EDMG_BW_CONFIG_6 = 6,
IEEE80211_EDMG_BW_CONFIG_7 = 7,
IEEE80211_EDMG_BW_CONFIG_8 = 8,
IEEE80211_EDMG_BW_CONFIG_9 = 9,
IEEE80211_EDMG_BW_CONFIG_10 = 10,
IEEE80211_EDMG_BW_CONFIG_11 = 11,
IEEE80211_EDMG_BW_CONFIG_12 = 12,
IEEE80211_EDMG_BW_CONFIG_13 = 13,
IEEE80211_EDMG_BW_CONFIG_14 = 14,
IEEE80211_EDMG_BW_CONFIG_15 = 15,
};
/**
* struct ieee80211_edmg - EDMG configuration
*
* This structure describes most essential parameters needed
* to describe 802.11ay EDMG configuration
*
* @channels: bitmap that indicates the 2.16 GHz channel(s)
* that are allowed to be used for transmissions.
* Bit 0 indicates channel 1, bit 1 indicates channel 2, etc.
* Set to 0 indicate EDMG not supported.
* @bw_config: Channel BW Configuration subfield encodes
* the allowed channel bandwidth configurations
*/
struct ieee80211_edmg {
u8 channels;
enum ieee80211_edmg_bw_config bw_config;
};
/**
* struct ieee80211_sta_s1g_cap - STA's S1G capabilities
*
* This structure describes most essential parameters needed
* to describe 802.11ah S1G capabilities for a STA.
*
* @s1g: is STA an S1G STA
* @cap: S1G capabilities information
* @nss_mcs: Supported NSS MCS set
*/
struct ieee80211_sta_s1g_cap {
bool s1g;
u8 cap[10]; /* use S1G_CAPAB_ */
u8 nss_mcs[5];
};
/**
* 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 with
* 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
* @s1g_cap: S1G capabilities in this band
* @edmg_cap: EDMG capabilities in this band
* @s1g_cap: S1G capabilities in this band (S1B band only, of course)
* @n_iftype_data: number of iftype data entries
* @iftype_data: interface type data entries. Note that the bits in
* @types_mask inside this structure cannot overlap (i.e. only
* one occurrence of each type is allowed across all instances of
* iftype_data).
*/
struct ieee80211_supported_band {
struct ieee80211_channel *channels;
struct ieee80211_rate *bitrates;
enum nl80211_band band;
int n_channels;
int n_bitrates;
struct ieee80211_sta_ht_cap ht_cap;
struct ieee80211_sta_vht_cap vht_cap;
struct ieee80211_sta_s1g_cap s1g_cap;
struct ieee80211_edmg edmg_cap;
u16 n_iftype_data;
const struct ieee80211_sband_iftype_data *iftype_data;
};
/**
* ieee80211_get_sband_iftype_data - return sband data for a given iftype
* @sband: the sband to search for the STA on
* @iftype: enum nl80211_iftype
*
* Return: pointer to struct ieee80211_sband_iftype_data, or NULL is none found
*/
static inline const struct ieee80211_sband_iftype_data *
ieee80211_get_sband_iftype_data(const struct ieee80211_supported_band *sband,
u8 iftype)
{
int i;
if (WARN_ON(iftype >= NL80211_IFTYPE_MAX))
return NULL;
if (iftype == NL80211_IFTYPE_AP_VLAN)
iftype = NL80211_IFTYPE_AP;
for (i = 0; i < sband->n_iftype_data; i++) {
const struct ieee80211_sband_iftype_data *data =
&sband->iftype_data[i];
if (data->types_mask & BIT(iftype))
return data;
}
return NULL;
}
/**
* ieee80211_get_he_iftype_cap - return HE capabilities for an sband's iftype
* @sband: the sband to search for the iftype on
* @iftype: enum nl80211_iftype
*
* Return: pointer to the struct ieee80211_sta_he_cap, or NULL is none found
*/
static inline const struct ieee80211_sta_he_cap *
ieee80211_get_he_iftype_cap(const struct ieee80211_supported_band *sband,
u8 iftype)
{
const struct ieee80211_sband_iftype_data *data =
ieee80211_get_sband_iftype_data(sband, iftype);
if (data && data->he_cap.has_he)
return &data->he_cap;
return NULL;
}
/**
* ieee80211_get_he_6ghz_capa - return HE 6 GHz capabilities
* @sband: the sband to search for the STA on
* @iftype: the iftype to search for
*
* Return: the 6GHz capabilities
*/
static inline __le16
ieee80211_get_he_6ghz_capa(const struct ieee80211_supported_band *sband,
enum nl80211_iftype iftype)
{
const struct ieee80211_sband_iftype_data *data =
ieee80211_get_sband_iftype_data(sband, iftype);
if (WARN_ON(!data || !data->he_cap.has_he))
return 0;
return data->he_6ghz_capa.capa;
}
/**
* ieee80211_get_eht_iftype_cap - return ETH capabilities for an sband's iftype
* @sband: the sband to search for the iftype on
* @iftype: enum nl80211_iftype
*
* Return: pointer to the struct ieee80211_sta_eht_cap, or NULL is none found
*/
static inline const struct ieee80211_sta_eht_cap *
ieee80211_get_eht_iftype_cap(const struct ieee80211_supported_band *sband,
enum nl80211_iftype iftype)
{
const struct ieee80211_sband_iftype_data *data =
ieee80211_get_sband_iftype_data(sband, iftype);
if (data && data->eht_cap.has_eht)
return &data->eht_cap;
return NULL;
}
/**
* wiphy_read_of_freq_limits - read frequency limits from device tree
*
* @wiphy: the wireless device to get extra limits for
*
* Some devices may have extra limitations specified in DT. This may be useful
* for chipsets that normally support more bands but are limited due to board
* design (e.g. by antennas or external power amplifier).
*
* This function reads info from DT and uses it to *modify* channels (disable
* unavailable ones). It's usually a *bad* idea to use it in drivers with
* shared channel data as DT limitations are device specific. You should make
* sure to call it only if channels in wiphy are copied and can be modified
* without affecting other devices.
*
* As this function access device node it has to be called after set_wiphy_dev.
* It also modifies channels so they have to be set first.
* If using this helper, call it before wiphy_register().
*/
#ifdef CONFIG_OF
void wiphy_read_of_freq_limits(struct wiphy *wiphy);
#else /* CONFIG_OF */
static inline void wiphy_read_of_freq_limits(struct wiphy *wiphy)
{
}
#endif /* !CONFIG_OF */
/*
* 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.
*/
#define VHT_MUMIMO_GROUPS_DATA_LEN (WLAN_MEMBERSHIP_LEN +\
WLAN_USER_POSITION_LEN)
/**
* struct vif_params - describes virtual interface parameters
* @flags: monitor interface flags, unchanged if 0, otherwise
* %MONITOR_FLAG_CHANGED will be set
* @use_4addr: use 4-address frames
* @macaddr: address to use for this virtual interface.
* If this parameter is set to zero address the driver may
* determine the address as needed.
* This feature is only fully supported by drivers that enable the
* %NL80211_FEATURE_MAC_ON_CREATE flag. Others may support creating
** only p2p devices with specified MAC.
* @vht_mumimo_groups: MU-MIMO groupID, used for monitoring MU-MIMO packets
* belonging to that MU-MIMO groupID; %NULL if not changed
* @vht_mumimo_follow_addr: MU-MIMO follow address, used for monitoring
* MU-MIMO packets going to the specified station; %NULL if not changed
*/
struct vif_params {
u32 flags;
int use_4addr;
u8 macaddr[ETH_ALEN];
const u8 *vht_mumimo_groups;
const u8 *vht_mumimo_follow_addr;
};
/**
* 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.
* @vlan_id: vlan_id for VLAN group key (if nonzero)
* @mode: key install mode (RX_TX, NO_TX or SET_TX)
*/
struct key_params {
const u8 *key;
const u8 *seq;
int key_len;
int seq_len;
u16 vlan_id;
u32 cipher;
enum nl80211_key_mode mode;
};
/**
* 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)
* @edmg: define the EDMG channels configuration.
* If edmg is requested (i.e. the .channels member is non-zero),
* chan will define the primary channel and all other
* parameters are ignored.
* @freq1_offset: offset from @center_freq1, in KHz
*/
struct cfg80211_chan_def {
struct ieee80211_channel *chan;
enum nl80211_chan_width width;
u32 center_freq1;
u32 center_freq2;
struct ieee80211_edmg edmg;
u16 freq1_offset;
};
/*
* 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];
u16 he_mcs[NL80211_HE_NSS_MAX];
enum nl80211_txrate_gi gi;
enum nl80211_he_gi he_gi;
enum nl80211_he_ltf he_ltf;
} control[NUM_NL80211_BANDS];
};
/**
* struct cfg80211_tid_cfg - TID specific configuration
* @config_override: Flag to notify driver to reset TID configuration
* of the peer.
* @tids: bitmap of TIDs to modify
* @mask: bitmap of attributes indicating which parameter changed,
* similar to &nl80211_tid_config_supp.
* @noack: noack configuration value for the TID
* @retry_long: retry count value
* @retry_short: retry count value
* @ampdu: Enable/Disable MPDU aggregation
* @rtscts: Enable/Disable RTS/CTS
* @amsdu: Enable/Disable MSDU aggregation
* @txrate_type: Tx bitrate mask type
* @txrate_mask: Tx bitrate to be applied for the TID
*/
struct cfg80211_tid_cfg {
bool config_override;
u8 tids;
u64 mask;
enum nl80211_tid_config noack;
u8 retry_long, retry_short;
enum nl80211_tid_config ampdu;
enum nl80211_tid_config rtscts;
enum nl80211_tid_config amsdu;
enum nl80211_tx_rate_setting txrate_type;
struct cfg80211_bitrate_mask txrate_mask;
};
/**
* struct cfg80211_tid_config - TID configuration
* @peer: Station's MAC address
* @n_tid_conf: Number of TID specific configurations to be applied
* @tid_conf: Configuration change info
*/
struct cfg80211_tid_config {
const u8 *peer;
u32 n_tid_conf;
struct cfg80211_tid_cfg tid_conf[] __counted_by(n_tid_conf);
};
/**
* struct cfg80211_fils_aad - FILS AAD data
* @macaddr: STA MAC address
* @kek: FILS KEK
* @kek_len: FILS KEK length
* @snonce: STA Nonce
* @anonce: AP Nonce
*/
struct cfg80211_fils_aad {
const u8 *macaddr;
const u8 *kek;
u8 kek_len;
const u8 *snonce;
const u8 *anonce;
};
/**
* struct cfg80211_set_hw_timestamp - enable/disable HW timestamping
* @macaddr: peer MAC address. NULL to enable/disable HW timestamping for all
* addresses.
* @enable: if set, enable HW timestamping for the specified MAC address.
* Otherwise disable HW timestamping for the specified MAC address.
*/
struct cfg80211_set_hw_timestamp {
const u8 *macaddr;
bool enable;
};
/**
* 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->freq1_offset == chandef2->freq1_offset &&
chandef1->center_freq2 == chandef2->center_freq2);
}
/**
* cfg80211_chandef_is_edmg - check if chandef represents an EDMG channel
*
* @chandef: the channel definition
*
* Return: %true if EDMG defined, %false otherwise.
*/
static inline bool
cfg80211_chandef_is_edmg(const struct cfg80211_chan_def *chandef)
{
return chandef->edmg.channels || chandef->edmg.bw_config;
}
/**
* 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
* @iftype: the interface type as specified in &enum nl80211_iftype
* Returns:
* 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,
enum nl80211_iftype iftype);
/**
* nl80211_send_chandef - sends the channel definition.
* @msg: the msg to send channel definition
* @chandef: the channel definition to check
*
* Returns: 0 if sent the channel definition to msg, < 0 on error
**/
int nl80211_send_chandef(struct sk_buff *msg, const struct cfg80211_chan_def *chandef);
/**
* ieee80211_chanwidth_rate_flags - return rate flags for channel width
* @width: the channel width of the channel
*
* In some channel types, not all rates may be used - for example CCK
* rates may not be used in 5/10 MHz channels.
*
* Returns: rate flags which apply for this channel width
*/
static inline enum ieee80211_rate_flags
ieee80211_chanwidth_rate_flags(enum nl80211_chan_width width)
{
switch (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_rate_flags - returns rate flags for a channel
* @chandef: channel definition for the channel
*
* See ieee80211_chanwidth_rate_flags().
*
* Returns: rate flags which apply for this channel
*/
static inline enum ieee80211_rate_flags
ieee80211_chandef_rate_flags(struct cfg80211_chan_def *chandef)
{
return ieee80211_chanwidth_rate_flags(chandef->width);
}