1. NAME▲

struct_wiphy - wireless hardware description

2. SYNOPSIS ▲



 
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struct wiphy {
  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;
  u16 interface_modes;
  u16 max_acl_mac_addrs;
  u32 flags;
  u32 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
  struct wiphy_wowlan_support wowlan;
#endif
  u16 max_remain_on_channel_duration;
  u8 max_num_pmkids;
  u32 available_antennas_tx;
  u32 available_antennas_rx;
  u32 probe_resp_offload;
  const u8 * extended_capabilities;
  const u8 * extended_capabilities_mask;
  u8 extended_capabilities_len;
  const void * privid;
  struct ieee80211_supported_band * bands[IEEE80211_NUM_BANDS];
  void (* reg_notifier) (struct wiphy *wiphy,struct regulatory_request *request);
  const struct ieee80211_regdomain __rcu * regd;
  struct device dev;
  bool registered;
  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
  struct net * _net;
#endif
#ifdef CONFIG_CFG80211_WEXT
  const struct iw_handler_def * wext;
#endif
  char priv[0];
};

3. MEMBERS ▲

perm_addr[ETH_ALEN]
    permanent MAC address of this device

addr_mask[ETH_ALEN]
    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

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.

mgmt_stypes
    bitmasks of frame subtypes that can be subscribed to or transmitted through nl80211, points to an array indexed by interface type

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.

n_addresses
    number of addresses in addresses.

interface_modes
    bitmask of interfaces types valid for this wiphy, must be set by driver

max_acl_mac_addrs
    Maximum number of MAC addresses that the device supports for ACL.

flags
    wiphy flags, see enum wiphy_flags

features
    features advertised to nl80211, see enum nl80211_feature_flags.

ap_sme_capa
    AP SME capabilities, flags from enum nl80211_ap_sme_features.

signal_type
    signal type reported in struct cfg80211_bss.

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

n_cipher_suites
    number of supported cipher suites

cipher_suites
    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

coverage_class
    current coverage class

fw_version[ETHTOOL_FWVERS_LEN]
    firmware version for ethtool reporting

hw_version
    hardware version for ethtool reporting

wowlan
    WoWLAN support information

max_remain_on_channel_duration
    Maximum time a remain-on-channel operation may request, if implemented.

max_num_pmkids
    maximum number of PMKIDs supported by device

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.

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

privid
    a pointer that drivers can use to identify if an arbitrary wiphy is theirs, e.g. in global notifiers

bands[IEEE80211_NUM_BANDS]
    information about bands/channels supported by this device

reg_notifier
    the driverAqs regulatory notification callback, note that if your driver uses wiphy_apply_custom_regulatory the reg_notifierAqs request can be passed as NULL

regd
    the driverAqs 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.

dev
    (virtual) struct device for this wiphy

registered
    helps synchronize suspend/resume with wiphy unregister

debugfsdir
    debugfs directory used for this wiphy, will be renamed automatically on wiphy renames

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.

_net
    the network namespace this wiphy currently lives in

wext
    wireless extension handlers

priv[0]
    driver private data (sized according to wiphy_new parameter)

4. FOUR BITS ARE VARIABLE THEN SET IT TO 00 ▲

...:00:0f. The actual variable bits shall be determined by the interfaces added, with interfaces not matching the mask being rejected to be brought up.

5. AUTHOR ▲

Johannes Berg <>
    Author.

6. COPYRIGHT ▲