#ifndef __NET_CFG80211_H #define __NET_CFG80211_H /* * 802.11 device and configuration interface * * Copyright 2006-2009 Johannes Berg * * 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 #include #include #include #include #include #include #include #include /* remove once we remove the wext stuff */ #include #include /* * 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) */ enum ieee80211_band { IEEE80211_BAND_2GHZ, IEEE80211_BAND_5GHZ, /* keep last */ IEEE80211_NUM_BANDS }; /** * enum ieee80211_channel_flags - channel flags * * Channel flags set by the regulatory control code. * * @IEEE80211_CHAN_DISABLED: This channel is disabled. * @IEEE80211_CHAN_PASSIVE_SCAN: Only passive scanning is permitted * on this channel. * @IEEE80211_CHAN_NO_IBSS: IBSS is not allowed on this channel. * @IEEE80211_CHAN_RADAR: Radar detection is required on this channel. * @IEEE80211_CHAN_NO_FAT_ABOVE: extension channel above this channel * is not permitted. * @IEEE80211_CHAN_NO_FAT_BELOW: extension channel below this channel * is not permitted. */ enum ieee80211_channel_flags { IEEE80211_CHAN_DISABLED = 1<<0, IEEE80211_CHAN_PASSIVE_SCAN = 1<<1, IEEE80211_CHAN_NO_IBSS = 1<<2, IEEE80211_CHAN_RADAR = 1<<3, IEEE80211_CHAN_NO_FAT_ABOVE = 1<<4, IEEE80211_CHAN_NO_FAT_BELOW = 1<<5, }; /** * struct ieee80211_channel - channel definition * * This structure describes a single channel for use * with cfg80211. * * @center_freq: center frequency in MHz * @max_bandwidth: maximum allowed bandwidth for this channel, in MHz * @hw_value: hardware-specific value for the channel * @flags: channel flags from &enum ieee80211_channel_flags. * @orig_flags: channel flags at registration time, used by regulatory * code to support devices with additional restrictions * @band: band this channel belongs to. * @max_antenna_gain: maximum antenna gain in dBi * @max_power: maximum transmission power (in dBm) * @beacon_found: helper to regulatory code to indicate when a beacon * has been found on this channel. Use regulatory_hint_found_beacon() * to enable this, this is is useful only on 5 GHz band. * @orig_mag: internal use * @orig_mpwr: internal use */ struct ieee80211_channel { enum ieee80211_band band; u16 center_freq; u8 max_bandwidth; u16 hw_value; u32 flags; int max_antenna_gain; int max_power; bool beacon_found; u32 orig_flags; int orig_mag, orig_mpwr; }; /** * enum ieee80211_rate_flags - rate flags * * Hardware/specification flags for rates. These are structured * in a way that allows using the same bitrate structure for * different bands/PHY modes. * * @IEEE80211_RATE_SHORT_PREAMBLE: Hardware can send with short * preamble on this bitrate; only relevant in 2.4GHz band and * with CCK rates. * @IEEE80211_RATE_MANDATORY_A: This bitrate is a mandatory rate * when used with 802.11a (on the 5 GHz band); filled by the * core code when registering the wiphy. * @IEEE80211_RATE_MANDATORY_B: This bitrate is a mandatory rate * when used with 802.11b (on the 2.4 GHz band); filled by the * core code when registering the wiphy. * @IEEE80211_RATE_MANDATORY_G: This bitrate is a mandatory rate * when used with 802.11g (on the 2.4 GHz band); filled by the * core code when registering the wiphy. * @IEEE80211_RATE_ERP_G: This is an ERP rate in 802.11g mode. */ enum ieee80211_rate_flags { IEEE80211_RATE_SHORT_PREAMBLE = 1<<0, IEEE80211_RATE_MANDATORY_A = 1<<1, IEEE80211_RATE_MANDATORY_B = 1<<2, IEEE80211_RATE_MANDATORY_G = 1<<3, IEEE80211_RATE_ERP_G = 1<<4, }; /** * struct ieee80211_rate - bitrate definition * * This structure describes a bitrate that an 802.11 PHY can * operate with. The two values @hw_value and @hw_value_short * are only for driver use when pointers to this structure are * passed around. * * @flags: rate-specific flags * @bitrate: bitrate in units of 100 Kbps * @hw_value: driver/hardware value for this rate * @hw_value_short: driver/hardware value for this rate when * short preamble is used */ struct ieee80211_rate { u32 flags; u16 bitrate; u16 hw_value, hw_value_short; }; /** * struct ieee80211_sta_ht_cap - STA's HT capabilities * * This structure describes most essential parameters needed * to describe 802.11n HT capabilities for an STA. * * @ht_supported: is HT supported by the STA * @cap: HT capabilities map as described in 802.11n spec * @ampdu_factor: Maximum A-MPDU length factor * @ampdu_density: Minimum A-MPDU spacing * @mcs: Supported MCS rates */ struct ieee80211_sta_ht_cap { u16 cap; /* use IEEE80211_HT_CAP_ */ bool ht_supported; u8 ampdu_factor; u8 ampdu_density; struct ieee80211_mcs_info mcs; }; /** * struct ieee80211_supported_band - frequency band definition * * This structure describes a frequency band a wiphy * is able to operate in. * * @channels: Array of channels the hardware can operate in * in this band. * @band: the band this structure represents * @n_channels: Number of channels in @channels * @bitrates: Array of bitrates the hardware can operate with * in this band. Must be sorted to give a valid "supported * rates" IE, i.e. CCK rates first, then OFDM. * @n_bitrates: Number of bitrates in @bitrates */ struct ieee80211_supported_band { struct ieee80211_channel *channels; struct ieee80211_rate *bitrates; enum ieee80211_band band; int n_channels; int n_bitrates; struct ieee80211_sta_ht_cap ht_cap; }; /* * Wireless hardware/device configuration structures and methods */ /** * struct vif_params - describes virtual interface parameters * @mesh_id: mesh ID to use * @mesh_id_len: length of the mesh ID */ struct vif_params { u8 *mesh_id; int mesh_id_len; }; /** * 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. */ struct key_params { u8 *key; u8 *seq; int key_len; int seq_len; u32 cipher; }; /** * struct beacon_parameters - beacon parameters * * Used to configure the beacon for an interface. * * @head: head portion of beacon (before TIM IE) * or %NULL if not changed * @tail: tail portion of beacon (after TIM IE) * or %NULL if not changed * @interval: beacon interval or zero if not changed * @dtim_period: DTIM period or zero if not changed * @head_len: length of @head * @tail_len: length of @tail */ struct beacon_parameters { u8 *head, *tail; int interval, dtim_period; int head_len, tail_len; }; /** * enum plink_action - actions to perform in mesh peers * * @PLINK_ACTION_INVALID: action 0 is reserved * @PLINK_ACTION_OPEN: start mesh peer link establishment * @PLINK_ACTION_BLOCL: block traffic from this mesh peer */ enum plink_actions { PLINK_ACTION_INVALID, PLINK_ACTION_OPEN, PLINK_ACTION_BLOCK, }; /** * struct station_parameters - station parameters * * Used to change and create a new station. * * @vlan: vlan interface station should belong to * @supported_rates: supported rates in IEEE 802.11 format * (or NULL for no change) * @supported_rates_len: number of supported rates * @sta_flags_mask: station flags that changed * (bitmask of BIT(NL80211_STA_FLAG_...)) * @sta_flags_set: station flags values * (bitmask of BIT(NL80211_STA_FLAG_...)) * @listen_interval: listen interval or -1 for no change * @aid: AID or zero for no change */ struct station_parameters { u8 *supported_rates; struct net_device *vlan; u32 sta_flags_mask, sta_flags_set; int listen_interval; u16 aid; u8 supported_rates_len; u8 plink_action; struct ieee80211_ht_cap *ht_capa; }; /** * enum station_info_flags - station information flags * * Used by the driver to indicate which info in &struct station_info * it has filled in during get_station() or dump_station(). * * @STATION_INFO_INACTIVE_TIME: @inactive_time filled * @STATION_INFO_RX_BYTES: @rx_bytes filled * @STATION_INFO_TX_BYTES: @tx_bytes filled * @STATION_INFO_LLID: @llid filled * @STATION_INFO_PLID: @plid filled * @STATION_INFO_PLINK_STATE: @plink_state filled * @STATION_INFO_SIGNAL: @signal filled * @STATION_INFO_TX_BITRATE: @tx_bitrate fields are filled * (tx_bitrate, tx_bitrate_flags and tx_bitrate_mcs) * @STATION_INFO_RX_PACKETS: @rx_packets filled * @STATION_INFO_TX_PACKETS: @tx_packets filled */ 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, }; /** * enum station_info_rate_flags - bitrate info flags * * Used by the driver to indicate the specific rate transmission * type for 802.11n transmissions. * * @RATE_INFO_FLAGS_MCS: @tx_bitrate_mcs filled * @RATE_INFO_FLAGS_40_MHZ_WIDTH: 40 Mhz width transmission * @RATE_INFO_FLAGS_SHORT_GI: 400ns guard interval */ enum rate_info_flags { RATE_INFO_FLAGS_MCS = 1<<0, RATE_INFO_FLAGS_40_MHZ_WIDTH = 1<<1, RATE_INFO_FLAGS_SHORT_GI = 1<<2, }; /** * struct rate_info - bitrate information * * Information about a receiving or transmitting bitrate * * @flags: bitflag of flags from &enum rate_info_flags * @mcs: mcs index if struct describes a 802.11n bitrate * @legacy: bitrate in 100kbit/s for 802.11abg */ struct rate_info { u8 flags; u8 mcs; u16 legacy; }; /** * struct station_info - station information * * Station information filled by driver for get_station() and dump_station. * * @filled: bitflag of flags from &enum station_info_flags * @inactive_time: time since last station activity (tx/rx) in milliseconds * @rx_bytes: bytes received from this station * @tx_bytes: bytes transmitted to this station * @llid: mesh local link id * @plid: mesh peer link id * @plink_state: mesh peer link state * @signal: signal strength of last received packet in dBm * @txrate: current unicast bitrate to this station * @rx_packets: packets received from this station * @tx_packets: packets transmitted to this station */ struct station_info { u32 filled; u32 inactive_time; u32 rx_bytes; u32 tx_bytes; u16 llid; u16 plid; u8 plink_state; s8 signal; struct rate_info txrate; u32 rx_packets; u32 tx_packets; }; /** * enum monitor_flags - monitor flags * * Monitor interface configuration flags. Note that these must be the bits * according to the nl80211 flags. * * @MONITOR_FLAG_FCSFAIL: pass frames with bad FCS * @MONITOR_FLAG_PLCPFAIL: pass frames with bad PLCP * @MONITOR_FLAG_CONTROL: pass control frames * @MONITOR_FLAG_OTHER_BSS: disable BSSID filtering * @MONITOR_FLAG_COOK_FRAMES: report frames after processing */ enum monitor_flags { MONITOR_FLAG_FCSFAIL = 1<bss_priv_size bytes */ struct cfg80211_bss { struct ieee80211_channel *channel; u8 bssid[ETH_ALEN]; u64 tsf; u16 beacon_interval; u16 capability; u8 *information_elements; size_t len_information_elements; s32 signal; void (*free_priv)(struct cfg80211_bss *bss); u8 priv[0] __attribute__((__aligned__(sizeof(void *)))); }; /** * struct cfg80211_auth_request - Authentication request data * * This structure provides information needed to complete IEEE 802.11 * authentication. * NOTE: This structure will likely change when more code from mac80211 is * moved into cfg80211 so that non-mac80211 drivers can benefit from it, too. * Before using this in a driver that does not use mac80211, it would be better * to check the status of that work and better yet, volunteer to work on it. * * @chan: The channel to use or %NULL if not specified (auto-select based on * scan results) * @peer_addr: The address of the peer STA (AP BSSID in infrastructure case); * this field is required to be present; if the driver wants to help with * BSS selection, it should use (yet to be added) MLME event to allow user * space SME to be notified of roaming candidate, so that the SME can then * use the authentication request with the recommended BSSID and whatever * other data may be needed for authentication/association * @ssid: SSID or %NULL if not yet available * @ssid_len: Length of ssid in octets * @auth_type: Authentication type (algorithm) * @ie: Extra IEs to add to Authentication frame or %NULL * @ie_len: Length of ie buffer in octets */ struct cfg80211_auth_request { struct ieee80211_channel *chan; u8 *peer_addr; const u8 *ssid; size_t ssid_len; enum nl80211_auth_type auth_type; const u8 *ie; size_t ie_len; }; /** * struct cfg80211_assoc_request - (Re)Association request data * * This structure provides information needed to complete IEEE 802.11 * (re)association. * NOTE: This structure will likely change when more code from mac80211 is * moved into cfg80211 so that non-mac80211 drivers can benefit from it, too. * Before using this in a driver that does not use mac80211, it would be better * to check the status of that work and better yet, volunteer to work on it. * * @chan: The channel to use or %NULL if not specified (auto-select based on * scan results) * @peer_addr: The address of the peer STA (AP BSSID); this field is required * to be present and the STA must be in State 2 (authenticated) with the * peer STA * @ssid: SSID * @ssid_len: Length of ssid in octets * @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 * @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. */ struct cfg80211_assoc_request { struct ieee80211_channel *chan; u8 *peer_addr; const u8 *ssid; size_t ssid_len; const u8 *ie; size_t ie_len; bool use_mfp; bool control_port; }; /** * struct cfg80211_deauth_request - Deauthentication request data * * This structure provides information needed to complete IEEE 802.11 * deauthentication. * * @peer_addr: The address of the peer STA (AP BSSID); this field is required * to be present and the STA must be authenticated with the peer STA * @ie: Extra IEs to add to Deauthentication frame or %NULL * @ie_len: Length of ie buffer in octets */ struct cfg80211_deauth_request { u8 *peer_addr; u16 reason_code; const u8 *ie; size_t ie_len; }; /** * struct cfg80211_disassoc_request - Disassociation request data * * This structure provides information needed to complete IEEE 802.11 * disassocation. * * @peer_addr: The address of the peer STA (AP BSSID); this field is required * to be present and the STA must be associated with the peer STA * @ie: Extra IEs to add to Disassociation frame or %NULL * @ie_len: Length of ie buffer in octets */ struct cfg80211_disassoc_request { u8 *peer_addr; u16 reason_code; const u8 *ie; size_t ie_len; }; /** * struct cfg80211_ibss_params - IBSS parameters * * This structure defines the IBSS parameters for the join_ibss() * method. * * @ssid: The SSID, will always be non-null. * @ssid_len: The length of the SSID, will always be non-zero. * @bssid: Fixed BSSID requested, maybe be %NULL, if set do not * search for IBSSs with a different BSSID. * @channel: The channel to use if no IBSS can be found to join. * @channel_fixed: The channel should be fixed -- do not search for * IBSSs to join on other channels. * @ie: information element(s) to include in the beacon * @ie_len: length of that * @beacon_interval: beacon interval to use */ struct cfg80211_ibss_params { u8 *ssid; u8 *bssid; struct ieee80211_channel *channel; u8 *ie; u8 ssid_len, ie_len; u16 beacon_interval; bool channel_fixed; }; /** * 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 */ 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, }; /** * struct cfg80211_ops - backend description for wireless configuration * * This struct is registered by fullmac card drivers and/or wireless stacks * in order to handle configuration requests on their interfaces. * * All callbacks except where otherwise noted should return 0 * on success or a negative error code. * * All operations are currently invoked under rtnl for consistency with the * wireless extensions but this is subject to reevaluation as soon as this * code is used more widely and we have a first user without wext. * * @suspend: wiphy device needs to be suspended * @resume: wiphy device needs to be resumed * * @add_virtual_intf: create a new virtual interface with the given name, * must set the struct wireless_dev's iftype. * * @del_virtual_intf: remove the virtual interface determined by ifindex. * * @change_virtual_intf: change type/configuration of virtual interface, * keep the struct wireless_dev's iftype updated. * * @add_key: add a key with the given parameters. @mac_addr will be %NULL * when adding a group key. * * @get_key: get information about the key with the given parameters. * @mac_addr will be %NULL when requesting information for a group * key. All pointers given to the @callback function need not be valid * after it returns. * * @del_key: remove a key given the @mac_addr (%NULL for a group key) * and @key_index * * @set_default_key: set the default key on an interface * * @set_default_mgmt_key: set the default management frame key on an interface * * @add_beacon: Add a beacon with given parameters, @head, @interval * and @dtim_period will be valid, @tail is optional. * @set_beacon: Change the beacon parameters for an access point mode * interface. This should reject the call when no beacon has been * configured. * @del_beacon: Remove beacon configuration and stop sending the beacon. * * @add_station: Add a new station. * * @del_station: Remove a station; @mac may be NULL to remove all stations. * * @change_station: Modify a given station. * * @get_mesh_params: Put the current mesh parameters into *params * * @set_mesh_params: Set mesh parameters. * The mask is a bitfield which tells us which parameters to * set, and which to leave alone. * * @set_mesh_cfg: set mesh parameters (by now, just mesh id) * * @change_bss: Modify parameters for a given BSS. * * @set_txq_params: Set TX queue parameters * * @set_channel: Set channel * * @scan: Request to do a scan. If returning zero, the scan request is given * the driver, and will be valid until passed to cfg80211_scan_done(). * For scan results, call cfg80211_inform_bss(); you can call this outside * the scan/scan_done bracket too. * * @auth: Request to authenticate with the specified peer * @assoc: Request to (re)associate with the specified peer * @deauth: Request to deauthenticate from the specified peer * @disassoc: Request to disassociate from the specified peer * * @join_ibss: Join the specified IBSS (or create if necessary). Once done, call * cfg80211_ibss_joined(), also call that function when changing BSSID due * to a merge. * @leave_ibss: Leave the IBSS. * * @set_wiphy_params: Notify that wiphy parameters have changed; * @changed bitfield (see &enum wiphy_params_flags) describes which values * have changed. The actual parameter values are available in * struct wiphy. If returning an error, no value should be changed. */ struct cfg80211_ops { int (*suspend)(struct wiphy *wiphy); int (*resume)(struct wiphy *wiphy); int (*add_virtual_intf)(struct wiphy *wiphy, char *name, enum nl80211_iftype type, u32 *flags, struct vif_params *params); int (*del_virtual_intf)(struct wiphy *wiphy, int ifindex); int (*change_virtual_intf)(struct wiphy *wiphy, int ifindex, enum nl80211_iftype type, u32 *flags, struct vif_params *params); int (*add_key)(struct wiphy *wiphy, struct net_device *netdev, u8 key_index, const u8 *mac_addr, struct key_params *params); int (*get_key)(struct wiphy *wiphy, struct net_device *netdev, u8 key_index, 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, const u8 *mac_addr); int (*set_default_key)(struct wiphy *wiphy, struct net_device *netdev, u8 key_index); int (*set_default_mgmt_key)(struct wiphy *wiphy, struct net_device *netdev, u8 key_index); int (*add_beacon)(struct wiphy *wiphy, struct net_device *dev, struct beacon_parameters *info); int (*set_beacon)(struct wiphy *wiphy, struct net_device *dev, struct beacon_parameters *info); int (*del_beacon)(struct wiphy *wiphy, struct net_device *dev); int (*add_station)(struct wiphy *wiphy, struct net_device *dev, u8 *mac, struct station_parameters *params); int (*del_station)(struct wiphy *wiphy, struct net_device *dev, u8 *mac); int (*change_station)(struct wiphy *wiphy, struct net_device *dev, u8 *mac, struct station_parameters *params); int (*get_station)(struct wiphy *wiphy, struct net_device *dev, u8 *mac, struct station_info *sinfo); int (*dump_station)(struct wiphy *wiphy, struct net_device *dev, int idx, u8 *mac, struct station_info *sinfo); int (*add_mpath)(struct wiphy *wiphy, struct net_device *dev, u8 *dst, u8 *next_hop); int (*del_mpath)(struct wiphy *wiphy, struct net_device *dev, u8 *dst); int (*change_mpath)(struct wiphy *wiphy, struct net_device *dev, u8 *dst, u8 *next_hop); int (*get_mpath)(struct wiphy *wiphy, struct net_device *dev, u8 *dst, u8 *next_hop, struct mpath_info *pinfo); int (*dump_mpath)(struct wiphy *wiphy, struct net_device *dev, int idx, u8 *dst, u8 *next_hop, struct mpath_info *pinfo); int (*get_mesh_params)(struct wiphy *wiphy, struct net_device *dev, struct mesh_config *conf); int (*set_mesh_params)(struct wiphy *wiphy, struct net_device *dev, const struct mesh_config *nconf, u32 mask); int (*change_bss)(struct wiphy *wiphy, struct net_device *dev, struct bss_parameters *params); int (*set_txq_params)(struct wiphy *wiphy, struct ieee80211_txq_params *params); int (*set_channel)(struct wiphy *wiphy, struct ieee80211_channel *chan, enum nl80211_channel_type channel_type); int (*scan)(struct wiphy *wiphy, struct net_device *dev, struct cfg80211_scan_request *request); int (*auth)(struct wiphy *wiphy, struct net_device *dev, struct cfg80211_auth_request *req); int (*assoc)(struct wiphy *wiphy, struct net_device *dev, struct cfg80211_assoc_request *req); int (*deauth)(struct wiphy *wiphy, struct net_device *dev, struct cfg80211_deauth_request *req); int (*disassoc)(struct wiphy *wiphy, struct net_device *dev, struct cfg80211_disassoc_request *req); int (*join_ibss)(struct wiphy *wiphy, struct net_device *dev, struct cfg80211_ibss_params *params); int (*leave_ibss)(struct wiphy *wiphy, struct net_device *dev); int (*set_wiphy_params)(struct wiphy *wiphy, u32 changed); }; /* * wireless hardware and networking interfaces structures * and registration/helper functions */ /** * struct wiphy - wireless hardware description * @idx: the wiphy index assigned to this item * @class_dev: the class device representing /sys/class/ieee80211/ * @custom_regulatory: tells us the driver for this device * has its own custom regulatory domain and cannot identify the * ISO / IEC 3166 alpha2 it belongs to. When this is enabled * we will disregard the first regulatory hint (when the * initiator is %REGDOM_SET_BY_CORE). * @strict_regulatory: tells us the driver for this device will ignore * regulatory domain settings until it gets its own regulatory domain * via its regulatory_hint(). After its gets its own regulatory domain * it will only allow further regulatory domain settings to further * enhance compliance. For example if channel 13 and 14 are disabled * by this regulatory domain no user regulatory domain can enable these * channels at a later time. This can be used for devices which do not * have calibration information gauranteed for frequencies or settings * outside of its regulatory domain. * @reg_notifier: the driver's regulatory notification callback * @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 */ struct wiphy { /* assign these fields before you register the wiphy */ /* permanent MAC address */ u8 perm_addr[ETH_ALEN]; /* Supported interface modes, OR together BIT(NL80211_IFTYPE_...) */ u16 interface_modes; bool custom_regulatory; bool strict_regulatory; enum cfg80211_signal_type signal_type; int bss_priv_size; u8 max_scan_ssids; u16 max_scan_ie_len; int n_cipher_suites; const u32 *cipher_suites; u8 retry_short; u8 retry_long; u32 frag_threshold; u32 rts_threshold; /* 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. */ void *privid; struct ieee80211_supported_band *bands[IEEE80211_NUM_BANDS]; /* Lets us get back the wiphy on the callback */ int (*reg_notifier)(struct wiphy *wiphy, struct regulatory_request *request); /* fields below are read-only, assigned by cfg80211 */ const struct ieee80211_regdomain *regd; /* the item in /sys/class/ieee80211/ points to this, * you need use set_wiphy_dev() (see below) */ struct device dev; /* dir in debugfs: ieee80211/ */ struct dentry *debugfsdir; char priv[0] __attribute__((__aligned__(NETDEV_ALIGN))); }; /** * wiphy_priv - return priv from wiphy * * @wiphy: the wiphy whose priv pointer to return */ static inline void *wiphy_priv(struct wiphy *wiphy) { BUG_ON(!wiphy); return &wiphy->priv; } /** * set_wiphy_dev - set device pointer for wiphy * * @wiphy: The wiphy whose device to bind * @dev: The device to parent it to */ static inline void set_wiphy_dev(struct wiphy *wiphy, struct device *dev) { wiphy->dev.parent = dev; } /** * wiphy_dev - get wiphy dev pointer * * @wiphy: The wiphy whose device struct to look up */ static inline struct device *wiphy_dev(struct wiphy *wiphy) { return wiphy->dev.parent; } /** * wiphy_name - get wiphy name * * @wiphy: The wiphy whose name to return */ static inline const char *wiphy_name(struct wiphy *wiphy) { return dev_name(&wiphy->dev); } /** * wiphy_new - create a new wiphy for use with cfg80211 * * @ops: The configuration operations for this device * @sizeof_priv: The size of the private area to allocate * * Create a new wiphy and associate the given operations with it. * @sizeof_priv bytes are allocated for private use. * * The returned pointer must be assigned to each netdev's * ieee80211_ptr for proper operation. */ struct wiphy *wiphy_new(struct cfg80211_ops *ops, int sizeof_priv); /** * wiphy_register - register a wiphy with cfg80211 * * @wiphy: The wiphy to register. * * Returns a non-negative wiphy index or a negative error code. */ extern int wiphy_register(struct wiphy *wiphy); /** * wiphy_unregister - deregister a wiphy from cfg80211 * * @wiphy: The wiphy to unregister. * * After this call, no more requests can be made with this priv * pointer, but the call may sleep to wait for an outstanding * request that is being handled. */ extern void wiphy_unregister(struct wiphy *wiphy); /** * wiphy_free - free wiphy * * @wiphy: The wiphy to free */ extern void wiphy_free(struct wiphy *wiphy); /** * struct wireless_dev - wireless per-netdev state * * This structure must be allocated by the driver/stack * that uses the ieee80211_ptr field in struct net_device * (this is intentional so it can be allocated along with * the netdev.) * * @wiphy: pointer to hardware description * @iftype: interface type * @list: (private) Used to collect the interfaces * @netdev: (private) Used to reference back to the netdev * @current_bss: (private) Used by the internal configuration code * @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 * @wext: (private) Used by the internal wireless extensions compat code * @wext_bssid: (private) Used by the internal wireless extensions compat code */ struct wireless_dev { struct wiphy *wiphy; enum nl80211_iftype iftype; /* private to the generic wireless code */ struct list_head list; struct net_device *netdev; /* currently used for IBSS - might be rearranged in the future */ struct cfg80211_bss *current_bss; u8 bssid[ETH_ALEN]; u8 ssid[IEEE80211_MAX_SSID_LEN]; u8 ssid_len; #ifdef CONFIG_WIRELESS_EXT /* wext data */ struct { struct cfg80211_ibss_params ibss; u8 bssid[ETH_ALEN]; s8 default_key, default_mgmt_key; } wext; #endif }; /** * wdev_priv - return wiphy priv from wireless_dev * * @wdev: The wireless device whose wiphy's priv pointer to return */ static inline void *wdev_priv(struct wireless_dev *wdev) { BUG_ON(!wdev); return wiphy_priv(wdev->wiphy); } /* * Utility functions */ /** * ieee80211_channel_to_frequency - convert channel number to frequency */ extern int ieee80211_channel_to_frequency(int chan); /** * ieee80211_frequency_to_channel - convert frequency to channel number */ extern int ieee80211_frequency_to_channel(int freq); /* * Name indirection necessary because the ieee80211 code also has * a function named "ieee80211_get_channel", so if you include * cfg80211's header file you get cfg80211's version, if you try * to include both header files you'll (rightfully!) get a symbol * clash. */ extern struct ieee80211_channel *__ieee80211_get_channel(struct wiphy *wiphy, int freq); /** * ieee80211_get_channel - get channel struct from wiphy for specified frequency */ static inline struct ieee80211_channel * ieee80211_get_channel(struct wiphy *wiphy, int freq) { return __ieee80211_get_channel(wiphy, freq); } /** * ieee80211_get_response_rate - get basic rate for a given rate * * @sband: the band to look for rates in * @basic_rates: bitmap of basic rates * @bitrate: the bitrate for which to find the basic rate * * This function returns the basic rate corresponding to a given * bitrate, that is the next lower bitrate contained in the basic * rate map, which is, for this function, given as a bitmap of * indices of rates in the band's bitrate table. */ struct ieee80211_rate * ieee80211_get_response_rate(struct ieee80211_supported_band *sband, u32 basic_rates, int bitrate); /* * Radiotap parsing functions -- for controlled injection support * * Implemented in net/wireless/radiotap.c * Documentation in Documentation/networking/radiotap-headers.txt */ /** * struct ieee80211_radiotap_iterator - tracks walk thru present radiotap args * @rtheader: pointer to the radiotap header we are walking through * @max_length: length of radiotap header in cpu byte ordering * @this_arg_index: IEEE80211_RADIOTAP_... index of current arg * @this_arg: pointer to current radiotap arg * @arg_index: internal next argument index * @arg: internal next argument pointer * @next_bitmap: internal pointer to next present u32 * @bitmap_shifter: internal shifter for curr u32 bitmap, b0 set == arg present */ struct ieee80211_radiotap_iterator { struct ieee80211_radiotap_header *rtheader; int max_length; int this_arg_index; u8 *this_arg; int arg_index; u8 *arg; __le32 *next_bitmap; u32 bitmap_shifter; }; extern int ieee80211_radiotap_iterator_init( struct ieee80211_radiotap_iterator *iterator, struct ieee80211_radiotap_header *radiotap_header, int max_length); extern int ieee80211_radiotap_iterator_next( struct ieee80211_radiotap_iterator *iterator); /* * Regulatory helper functions for wiphys */ /** * regulatory_hint - driver hint to the wireless core a regulatory domain * @wiphy: the wireless device giving the hint (used only for reporting * conflicts) * @alpha2: the ISO/IEC 3166 alpha2 the driver claims its regulatory domain * should be in. If @rd is set this should be NULL. Note that if you * set this to NULL you should still set rd->alpha2 to some accepted * alpha2. * * Wireless drivers can use this function to hint to the wireless core * what it believes should be the current regulatory domain by * giving it an ISO/IEC 3166 alpha2 country code it knows its regulatory * domain should be in or by providing a completely build regulatory domain. * If the driver provides an ISO/IEC 3166 alpha2 userspace will be queried * for a regulatory domain structure for the respective country. * * The wiphy must have been registered to cfg80211 prior to this call. * For cfg80211 drivers this means you must first use wiphy_register(), * for mac80211 drivers you must first use ieee80211_register_hw(). * * Drivers should check the return value, its possible you can get * an -ENOMEM. */ extern int regulatory_hint(struct wiphy *wiphy, const char *alpha2); /** * regulatory_hint_11d - hints a country IE as a regulatory domain * @wiphy: the wireless device giving the hint (used only for reporting * conflicts) * @country_ie: pointer to the country IE * @country_ie_len: length of the country IE * * We will intersect the rd with the what CRDA tells us should apply * for the alpha2 this country IE belongs to, this prevents APs from * sending us incorrect or outdated information against a country. */ extern void regulatory_hint_11d(struct wiphy *wiphy, u8 *country_ie, u8 country_ie_len); /** * wiphy_apply_custom_regulatory - apply a custom driver regulatory domain * @wiphy: the wireless device we want to process the regulatory domain on * @regd: the custom regulatory domain to use for this wiphy * * Drivers can sometimes have custom regulatory domains which do not apply * to a specific country. Drivers can use this to apply such custom regulatory * domains. This routine must be called prior to wiphy registration. The * custom regulatory domain will be trusted completely and as such previous * default channel settings will be disregarded. If no rule is found for a * channel on the regulatory domain the channel will be disabled. */ extern void wiphy_apply_custom_regulatory( struct wiphy *wiphy, const struct ieee80211_regdomain *regd); /** * freq_reg_info - get regulatory information for the given frequency * @wiphy: the wiphy for which we want to process this rule for * @center_freq: Frequency in KHz for which we want regulatory information for * @bandwidth: the bandwidth requirement you have in KHz, if you do not have one * you can set this to 0. If this frequency is allowed we then set * this value to the maximum allowed bandwidth. * @reg_rule: the regulatory rule which we have for this frequency * * Use this function to get the regulatory rule for a specific frequency on * a given wireless device. If the device has a specific regulatory domain * it wants to follow we respect that unless a country IE has been received * and processed already. * * Returns 0 if it was able to find a valid regulatory rule which does * apply to the given center_freq otherwise it returns non-zero. It will * also return -ERANGE if we determine the given center_freq does not even have * a regulatory rule for a frequency range in the center_freq's band. See * freq_in_rule_band() for our current definition of a band -- this is purely * subjective and right now its 802.11 specific. */ extern int freq_reg_info(struct wiphy *wiphy, u32 center_freq, u32 *bandwidth, const struct ieee80211_reg_rule **reg_rule); /* * Temporary wext handlers & helper functions * * In the future cfg80211 will simply assign the entire wext handler * structure to netdevs it manages, but we're not there yet. */ int cfg80211_wext_giwname(struct net_device *dev, struct iw_request_info *info, char *name, char *extra); int cfg80211_wext_siwmode(struct net_device *dev, struct iw_request_info *info, u32 *mode, char *extra); int cfg80211_wext_giwmode(struct net_device *dev, struct iw_request_info *info, u32 *mode, char *extra); int cfg80211_wext_siwscan(struct net_device *dev, struct iw_request_info *info, union iwreq_data *wrqu, char *extra); int cfg80211_wext_giwscan(struct net_device *dev, struct iw_request_info *info, struct iw_point *data, char *extra); int cfg80211_wext_siwmlme(struct net_device *dev, struct iw_request_info *info, struct iw_point *data, char *extra); int cfg80211_wext_giwrange(struct net_device *dev, struct iw_request_info *info, struct iw_point *data, char *extra); int cfg80211_ibss_wext_siwfreq(struct net_device *dev, struct iw_request_info *info, struct iw_freq *freq, char *extra); int cfg80211_ibss_wext_giwfreq(struct net_device *dev, struct iw_request_info *info, struct iw_freq *freq, char *extra); int cfg80211_ibss_wext_siwessid(struct net_device *dev, struct iw_request_info *info, struct iw_point *data, char *ssid); int cfg80211_ibss_wext_giwessid(struct net_device *dev, struct iw_request_info *info, struct iw_point *data, char *ssid); int cfg80211_ibss_wext_siwap(struct net_device *dev, struct iw_request_info *info, struct sockaddr *ap_addr, char *extra); int cfg80211_ibss_wext_giwap(struct net_device *dev, struct iw_request_info *info, struct sockaddr *ap_addr, char *extra); struct ieee80211_channel *cfg80211_wext_freq(struct wiphy *wiphy, struct iw_freq *freq); int cfg80211_wext_siwrts(struct net_device *dev, struct iw_request_info *info, struct iw_param *rts, char *extra); int cfg80211_wext_giwrts(struct net_device *dev, struct iw_request_info *info, struct iw_param *rts, char *extra); int cfg80211_wext_siwfrag(struct net_device *dev, struct iw_request_info *info, struct iw_param *frag, char *extra); int cfg80211_wext_giwfrag(struct net_device *dev, struct iw_request_info *info, struct iw_param *frag, char *extra); int cfg80211_wext_siwretry(struct net_device *dev, struct iw_request_info *info, struct iw_param *retry, char *extra); int cfg80211_wext_giwretry(struct net_device *dev, struct iw_request_info *info, struct iw_param *retry, char *extra); int cfg80211_wext_siwencodeext(struct net_device *dev, struct iw_request_info *info, struct iw_point *erq, char *extra); int cfg80211_wext_siwencode(struct net_device *dev, struct iw_request_info *info, struct iw_point *erq, char *keybuf); int cfg80211_wext_giwencode(struct net_device *dev, struct iw_request_info *info, struct iw_point *erq, char *keybuf); /* * callbacks for asynchronous cfg80211 methods, notification * functions and BSS handling helpers */ /** * cfg80211_scan_done - notify that scan finished * * @request: the corresponding scan request * @aborted: set to true if the scan was aborted for any reason, * userspace will be notified of that */ void cfg80211_scan_done(struct cfg80211_scan_request *request, bool aborted); /** * cfg80211_inform_bss - inform cfg80211 of a new BSS * * @wiphy: the wiphy reporting the BSS * @bss: the found BSS * @signal: the signal strength, type depends on the wiphy's signal_type * @gfp: context flags * * This informs cfg80211 that BSS information was found and * the BSS should be updated/added. */ struct cfg80211_bss* cfg80211_inform_bss_frame(struct wiphy *wiphy, struct ieee80211_channel *channel, struct ieee80211_mgmt *mgmt, size_t len, s32 signal, gfp_t gfp); struct cfg80211_bss* cfg80211_inform_bss(struct wiphy *wiphy, struct ieee80211_channel *channel, const u8 *bssid, u64 timestamp, u16 capability, u16 beacon_interval, const u8 *ie, size_t ielen, s32 signal, gfp_t gfp); struct cfg80211_bss *cfg80211_get_bss(struct wiphy *wiphy, struct ieee80211_channel *channel, const u8 *bssid, const u8 *ssid, size_t ssid_len, u16 capa_mask, u16 capa_val); static inline struct cfg80211_bss * cfg80211_get_ibss(struct wiphy *wiphy, struct ieee80211_channel *channel, const u8 *ssid, size_t ssid_len) { return cfg80211_get_bss(wiphy, channel, NULL, ssid, ssid_len, WLAN_CAPABILITY_IBSS, WLAN_CAPABILITY_IBSS); } struct cfg80211_bss *cfg80211_get_mesh(struct wiphy *wiphy, struct ieee80211_channel *channel, const u8 *meshid, size_t meshidlen, const u8 *meshcfg); void cfg80211_put_bss(struct cfg80211_bss *bss); /** * cfg80211_unlink_bss - unlink BSS from internal data structures * @wiphy: the wiphy * @bss: the bss to remove * * This function removes the given BSS from the internal data structures * thereby making it no longer show up in scan results etc. Use this * function when you detect a BSS is gone. Normally BSSes will also time * out, so it is not necessary to use this function at all. */ void cfg80211_unlink_bss(struct wiphy *wiphy, struct cfg80211_bss *bss); /** * cfg80211_send_rx_auth - notification of processed authentication * @dev: network device * @buf: authentication frame (header + body) * @len: length of the frame data * * This function is called whenever an authentication has been processed in * station mode. The driver is required to call either this function or * cfg80211_send_auth_timeout() to indicate the result of cfg80211_ops::auth() * call. */ void cfg80211_send_rx_auth(struct net_device *dev, const u8 *buf, size_t len); /** * cfg80211_send_auth_timeout - notification of timed out authentication * @dev: network device * @addr: The MAC address of the device with which the authentication timed out */ void cfg80211_send_auth_timeout(struct net_device *dev, const u8 *addr); /** * cfg80211_send_rx_assoc - notification of processed association * @dev: network device * @buf: (re)association response frame (header + body) * @len: length of the frame data * * This function is called whenever a (re)association response has been * processed in station mode. The driver is required to call either this * function or cfg80211_send_assoc_timeout() to indicate the result of * cfg80211_ops::assoc() call. */ void cfg80211_send_rx_assoc(struct net_device *dev, const u8 *buf, size_t len); /** * cfg80211_send_assoc_timeout - notification of timed out association * @dev: network device * @addr: The MAC address of the device with which the association timed out */ void cfg80211_send_assoc_timeout(struct net_device *dev, const u8 *addr); /** * cfg80211_send_deauth - notification of processed deauthentication * @dev: network device * @buf: deauthentication frame (header + body) * @len: length of the frame data * * This function is called whenever deauthentication has been processed in * station mode. This includes both received deauthentication frames and * locally generated ones. */ void cfg80211_send_deauth(struct net_device *dev, const u8 *buf, size_t len); /** * cfg80211_send_disassoc - notification of processed disassociation * @dev: network device * @buf: disassociation response frame (header + body) * @len: length of the frame data * * This function is called whenever disassociation has been processed in * station mode. This includes both received disassociation frames and locally * generated ones. */ void cfg80211_send_disassoc(struct net_device *dev, const u8 *buf, size_t len); /** * cfg80211_hold_bss - exclude bss from expiration * @bss: bss which should not expire * * In a case when the BSS is not updated but it shouldn't expire this * function can be used to mark the BSS to be excluded from expiration. */ void cfg80211_hold_bss(struct cfg80211_bss *bss); /** * cfg80211_unhold_bss - remove expiration exception from the BSS * @bss: bss which can expire again * * This function marks the BSS to be expirable again. */ void cfg80211_unhold_bss(struct cfg80211_bss *bss); /** * cfg80211_michael_mic_failure - notification of Michael MIC failure (TKIP) * @dev: network device * @addr: The source MAC address of the frame * @key_type: The key type that the received frame used * @key_id: Key identifier (0..3) * @tsc: The TSC value of the frame that generated the MIC failure (6 octets) * * 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); /** * cfg80211_ibss_joined - notify cfg80211 that device joined an IBSS * * @dev: network device * @bssid: the BSSID of the IBSS joined * @gfp: allocation flags * * This function notifies cfg80211 that the device joined an IBSS or * switched to a different BSSID. Before this function can be called, * either a beacon has to have been received from the IBSS, or one of * the cfg80211_inform_bss{,_frame} functions must have been called * with the locally generated beacon -- this guarantees that there is * always a scan result for this IBSS. cfg80211 will handle the rest. */ void cfg80211_ibss_joined(struct net_device *dev, const u8 *bssid, gfp_t gfp); #endif /* __NET_CFG80211_H */