diff options
Diffstat (limited to 'include/net')
| -rw-r--r-- | include/net/cfg80211.h | 897 | ||||
| -rw-r--r-- | include/net/mac80211.h | 117 | ||||
| -rw-r--r-- | include/net/regulatory.h | 101 | ||||
| -rw-r--r-- | include/net/wireless.h | 472 |
4 files changed, 953 insertions, 634 deletions
diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h index 5389afdc129..b8a76764e1c 100644 --- a/include/net/cfg80211.h +++ b/include/net/cfg80211.h @@ -1,71 +1,217 @@ #ifndef __NET_CFG80211_H #define __NET_CFG80211_H +/* + * 802.11 device and configuration interface + * + * Copyright 2006-2009 Johannes Berg <johannes@sipsolutions.net> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ +#include <linux/netdevice.h> +#include <linux/debugfs.h> +#include <linux/list.h> #include <linux/netlink.h> #include <linux/skbuff.h> #include <linux/nl80211.h> #include <linux/if_ether.h> #include <linux/ieee80211.h> -#include <linux/wireless.h> -#include <net/iw_handler.h> -#include <net/genetlink.h> +#include <net/regulatory.h> + /* remove once we remove the wext stuff */ #include <net/iw_handler.h> +#include <linux/wireless.h> + /* - * 802.11 configuration in-kernel interface + * wireless hardware capability structures + */ + +/** + * enum ieee80211_band - supported frequency bands + * + * The bands are assigned this way because the supported + * bitrates differ in these bands. * - * Copyright 2006, 2007 Johannes Berg <johannes@sipsolutions.net> + * @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 +}; /** - * struct vif_params - describes virtual interface parameters - * @mesh_id: mesh ID to use - * @mesh_id_len: length of the mesh ID + * 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. */ -struct vif_params { - u8 *mesh_id; - int mesh_id_len; +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, }; -/* Radiotap header iteration - * implemented in net/wireless/radiotap.c - * docs in Documentation/networking/radiotap-headers.txt +/** + * 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; +}; + /** - * 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 + * 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_radiotap_iterator { - struct ieee80211_radiotap_header *rtheader; - int max_length; - int this_arg_index; - u8 *this_arg; +/** + * 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; +}; - int arg_index; - u8 *arg; - __le32 *next_bitmap; - u32 bitmap_shifter; +/** + * 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; }; -extern int ieee80211_radiotap_iterator_init( - struct ieee80211_radiotap_iterator *iterator, - struct ieee80211_radiotap_header *radiotap_header, - int max_length); +/** + * 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; +}; -extern int ieee80211_radiotap_iterator_next( - struct ieee80211_radiotap_iterator *iterator); +/* + * 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 @@ -348,92 +494,6 @@ struct bss_parameters { u8 basic_rates_len; }; -/** - * enum environment_cap - Environment parsed from country IE - * @ENVIRON_ANY: indicates country IE applies to both indoor and - * outdoor operation. - * @ENVIRON_INDOOR: indicates country IE applies only to indoor operation - * @ENVIRON_OUTDOOR: indicates country IE applies only to outdoor operation - */ -enum environment_cap { - ENVIRON_ANY, - ENVIRON_INDOOR, - ENVIRON_OUTDOOR, -}; - -/** - * struct regulatory_request - used to keep track of regulatory requests - * - * @wiphy_idx: this is set if this request's initiator is - * %REGDOM_SET_BY_COUNTRY_IE or %REGDOM_SET_BY_DRIVER. This - * can be used by the wireless core to deal with conflicts - * and potentially inform users of which devices specifically - * cased the conflicts. - * @initiator: indicates who sent this request, could be any of - * of those set in nl80211_reg_initiator (%NL80211_REGDOM_SET_BY_*) - * @alpha2: the ISO / IEC 3166 alpha2 country code of the requested - * regulatory domain. We have a few special codes: - * 00 - World regulatory domain - * 99 - built by driver but a specific alpha2 cannot be determined - * 98 - result of an intersection between two regulatory domains - * @intersect: indicates whether the wireless core should intersect - * the requested regulatory domain with the presently set regulatory - * domain. - * @country_ie_checksum: checksum of the last processed and accepted - * country IE - * @country_ie_env: lets us know if the AP is telling us we are outdoor, - * indoor, or if it doesn't matter - * @list: used to insert into the reg_requests_list linked list - */ -struct regulatory_request { - int wiphy_idx; - enum nl80211_reg_initiator initiator; - char alpha2[2]; - bool intersect; - u32 country_ie_checksum; - enum environment_cap country_ie_env; - struct list_head list; -}; - -struct ieee80211_freq_range { - u32 start_freq_khz; - u32 end_freq_khz; - u32 max_bandwidth_khz; -}; - -struct ieee80211_power_rule { - u32 max_antenna_gain; - u32 max_eirp; -}; - -struct ieee80211_reg_rule { - struct ieee80211_freq_range freq_range; - struct ieee80211_power_rule power_rule; - u32 flags; -}; - -struct ieee80211_regdomain { - u32 n_reg_rules; - char alpha2[2]; - struct ieee80211_reg_rule reg_rules[]; -}; - -#define MHZ_TO_KHZ(freq) ((freq) * 1000) -#define KHZ_TO_MHZ(freq) ((freq) / 1000) -#define DBI_TO_MBI(gain) ((gain) * 100) -#define MBI_TO_DBI(gain) ((gain) / 100) -#define DBM_TO_MBM(gain) ((gain) * 100) -#define MBM_TO_DBM(gain) ((gain) / 100) - -#define REG_RULE(start, end, bw, gain, eirp, reg_flags) { \ - .freq_range.start_freq_khz = MHZ_TO_KHZ(start), \ - .freq_range.end_freq_khz = MHZ_TO_KHZ(end), \ - .freq_range.max_bandwidth_khz = MHZ_TO_KHZ(bw), \ - .power_rule.max_antenna_gain = DBI_TO_MBI(gain), \ - .power_rule.max_eirp = DBM_TO_MBM(eirp), \ - .flags = reg_flags, \ - } - struct mesh_config { /* Timeouts in ms */ /* Mesh plink management parameters */ @@ -504,7 +564,7 @@ struct cfg80211_scan_request { int n_ssids; struct ieee80211_channel **channels; u32 n_channels; - u8 *ie; + const u8 *ie; size_t ie_len; /* internal */ @@ -659,6 +719,47 @@ struct cfg80211_disassoc_request { }; /** + * 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 @@ -733,6 +834,16 @@ struct cfg80211_disassoc_request { * @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); @@ -818,9 +929,414 @@ struct cfg80211_ops { 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/<wiphy-name> + * @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/<wiphyname> */ + 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 cfg80211_ibss_params wext; + u8 wext_bssid[ETH_ALEN]; +#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; }; -/* temporary wext handlers */ +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); @@ -834,9 +1350,57 @@ int cfg80211_wext_siwscan(struct net_device *dev, 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); + +/* + * callbacks for asynchronous cfg80211 methods, notification + * functions and BSS handling helpers + */ /** * cfg80211_scan_done - notify that scan finished @@ -864,6 +1428,14 @@ cfg80211_inform_bss_frame(struct wiphy *wiphy, 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, @@ -883,6 +1455,7 @@ struct cfg80211_bss *cfg80211_get_mesh(struct wiphy *wiphy, 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 @@ -902,44 +1475,62 @@ void cfg80211_unlink_bss(struct wiphy *wiphy, struct cfg80211_bss *bss); * @len: length of the frame data * * This function is called whenever an authentication has been processed in - * station mode. + * 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. + * 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_rx_deauth - notification of processed deauthentication + * 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. + * station mode. This includes both received deauthentication frames and + * locally generated ones. */ -void cfg80211_send_rx_deauth(struct net_device *dev, const u8 *buf, - size_t len); +void cfg80211_send_deauth(struct net_device *dev, const u8 *buf, size_t len); /** - * cfg80211_send_rx_disassoc - notification of processed disassociation + * 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. + * station mode. This includes both received disassociation frames and locally + * generated ones. */ -void cfg80211_send_rx_disassoc(struct net_device *dev, const u8 *buf, - size_t len); +void cfg80211_send_disassoc(struct net_device *dev, const u8 *buf, size_t len); /** * cfg80211_hold_bss - exclude bss from expiration @@ -958,4 +1549,36 @@ void cfg80211_hold_bss(struct cfg80211_bss *bss); */ 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 */ diff --git a/include/net/mac80211.h b/include/net/mac80211.h index 3b83a80e3fe..446dbf75a1c 100644 --- a/include/net/mac80211.h +++ b/include/net/mac80211.h @@ -19,7 +19,6 @@ #include <linux/wireless.h> #include <linux/device.h> #include <linux/ieee80211.h> -#include <net/wireless.h> #include <net/cfg80211.h> /** @@ -518,7 +517,7 @@ struct ieee80211_rx_status { * Flags to define PHY configuration options * * @IEEE80211_CONF_RADIOTAP: add radiotap header at receive time (if supported) - * @IEEE80211_CONF_PS: Enable 802.11 power save mode + * @IEEE80211_CONF_PS: Enable 802.11 power save mode (managed mode only) */ enum ieee80211_conf_flags { IEEE80211_CONF_RADIOTAP = (1<<0), @@ -533,8 +532,7 @@ enum ieee80211_conf_flags { * @IEEE80211_CONF_CHANGE_BEACON_INTERVAL: the beacon interval changed * @IEEE80211_CONF_CHANGE_LISTEN_INTERVAL: the listen interval changed * @IEEE80211_CONF_CHANGE_RADIOTAP: the radiotap flag changed - * @IEEE80211_CONF_CHANGE_PS: the PS flag changed - * @IEEE80211_CONF_CHANGE_DYNPS_TIMEOUT: the dynamic PS timeout changed + * @IEEE80211_CONF_CHANGE_PS: the PS flag or dynamic PS timeout changed * @IEEE80211_CONF_CHANGE_POWER: the TX power changed * @IEEE80211_CONF_CHANGE_CHANNEL: the channel/channel_type changed * @IEEE80211_CONF_CHANGE_RETRY_LIMITS: retry limits changed @@ -545,10 +543,9 @@ enum ieee80211_conf_changed { IEEE80211_CONF_CHANGE_LISTEN_INTERVAL = BIT(2), IEEE80211_CONF_CHANGE_RADIOTAP = BIT(3), IEEE80211_CONF_CHANGE_PS = BIT(4), - IEEE80211_CONF_CHANGE_DYNPS_TIMEOUT = BIT(5), - IEEE80211_CONF_CHANGE_POWER = BIT(6), - IEEE80211_CONF_CHANGE_CHANNEL = BIT(7), - IEEE80211_CONF_CHANGE_RETRY_LIMITS = BIT(8), + IEEE80211_CONF_CHANGE_POWER = BIT(5), + IEEE80211_CONF_CHANGE_CHANNEL = BIT(6), + IEEE80211_CONF_CHANGE_RETRY_LIMITS = BIT(7), }; /** @@ -556,14 +553,26 @@ enum ieee80211_conf_changed { * * This struct indicates how the driver shall configure the hardware. * + * @flags: configuration flags defined above + * * @radio_enabled: when zero, driver is required to switch off the radio. * @beacon_int: beacon interval (TODO make interface config) + * * @listen_interval: listen interval in units of beacon interval - * @flags: configuration flags defined above + * @max_sleep_interval: the maximum number of beacon intervals to sleep for + * before checking the beacon for a TIM bit (managed mode only); this + * value will be only achievable between DTIM frames, the hardware + * needs to check for the multicast traffic bit in DTIM beacons. + * This variable is valid only when the CONF_PS flag is set. + * @dynamic_ps_timeout: The dynamic powersave timeout (in ms), see the + * powersave documentation below. This variable is valid only when + * the CONF_PS flag is set. + * * @power_level: requested transmit power (in dBm) - * @dynamic_ps_timeout: dynamic powersave timeout (in ms) + * * @channel: the channel to tune to * @channel_type: the channel (HT) type + * * @long_frame_max_tx_count: Maximum number of transmissions for a "long" frame * (a frame not RTS protected), called "dot11LongRetryLimit" in 802.11, * but actually means the number of transmissions not the number of retries @@ -575,6 +584,7 @@ struct ieee80211_conf { int beacon_int; u32 flags; int power_level, dynamic_ps_timeout; + int max_sleep_interval; u16 listen_interval; bool radio_enabled; @@ -1109,11 +1119,9 @@ ieee80211_get_alt_retry_rate(const struct ieee80211_hw *hw, * need software support for parsing the TIM bitmap. This is also supported * by mac80211 by combining the %IEEE80211_HW_SUPPORTS_PS and * %IEEE80211_HW_PS_NULLFUNC_STACK flags. The hardware is of course still - * required to pass up beacons. Additionally, in this case, mac80211 will - * wake up the hardware when multicast traffic is announced in the beacon. - * - * FIXME: I don't think we can be fast enough in software when we want to - * receive multicast traffic? + * required to pass up beacons. The hardware is still required to handle + * waking up for multicast traffic; if it cannot the driver must handle that + * as best as it can, mac80211 is too slow. * * Dynamic powersave mode is an extension to normal powersave mode in which * the hardware stays awake for a user-specified period of time after sending @@ -1134,11 +1142,53 @@ ieee80211_get_alt_retry_rate(const struct ieee80211_hw *hw, * way the host will only receive beacons where some relevant information * (for example ERP protection or WMM settings) have changed. * - * Beacon filter support is informed with %IEEE80211_HW_BEACON_FILTER flag. - * The driver needs to enable beacon filter support whenever power save is - * enabled, that is %IEEE80211_CONF_PS is set. When power save is enabled, - * the stack will not check for beacon miss at all and the driver needs to - * notify about complete loss of beacons with ieee80211_beacon_loss(). + * Beacon filter support is advertised with the %IEEE80211_HW_BEACON_FILTER + * hardware capability. The driver needs to enable beacon filter support + * whenever power save is enabled, that is %IEEE80211_CONF_PS is set. When + * power save is enabled, the stack will not check for beacon loss and the + * driver needs to notify about loss of beacons with ieee80211_beacon_loss(). + * + * The time (or number of beacons missed) until the firmware notifies the + * driver of a beacon loss event (which in turn causes the driver to call + * ieee80211_beacon_loss()) should be configurable and will be controlled + * by mac80211 and the roaming algorithm in the future. + * + * Since there may be constantly changing information elements that nothing + * in the software stack cares about, we will, in the future, have mac80211 + * tell the driver which information elements are interesting in the sense + * that we want to see changes in them. This will include + * - a list of information element IDs + * - a list of OUIs for the vendor information element + * + * Ideally, the hardware would filter out any beacons without changes in the + * requested elements, but if it cannot support that it may, at the expense + * of some efficiency, filter out only a subset. For example, if the device + * doesn't support checking for OUIs it should pass up all changes in all + * vendor information elements. + * + * Note that change, for the sake of simplification, also includes information + * elements appearing or disappearing from the beacon. + * + * Some hardware supports an "ignore list" instead, just make sure nothing + * that was requested is on the ignore list, and include commonly changing + * information element IDs in the ignore list, for example 11 (BSS load) and + * the various vendor-assigned IEs with unknown contents (128, 129, 133-136, + * 149, 150, 155, 156, 173, 176, 178, 179, 219); for forward compatibility + * it could also include some currently unused IDs. + * + * + * In addition to these capabilities, hardware should support notifying the + * host of changes in the beacon RSSI. This is relevant to implement roaming + * when no traffic is flowing (when traffic is flowing we see the RSSI of + * the received data packets). This can consist in notifying the host when + * the RSSI changes significantly or when it drops below or rises above + * configurable thresholds. In the future these thresholds will also be + * configured by mac80211 (which gets them from userspace) to implement + * them as the roaming algorithm requires. + * + * If the hardware cannot implement this, the driver should ask it to + * periodically pass beacon frames to the host so that software can do the + * signal strength threshold checking. */ /** @@ -1330,11 +1380,14 @@ enum ieee80211_ampdu_mlme_action { * the scan state machine in stack. The scan must honour the channel * configuration done by the regulatory agent in the wiphy's * registered bands. The hardware (or the driver) needs to make sure - * that power save is disabled. When the scan finishes, - * ieee80211_scan_completed() must be called; note that it also must - * be called when the scan cannot finish because the hardware is - * turned off! Anything else is a bug! Returns a negative error code - * which will be seen in userspace. + * that power save is disabled. + * The @req ie/ie_len members are rewritten by mac80211 to contain the + * entire IEs after the SSID, so that drivers need not look at these + * at all but just send them after the SSID -- mac80211 includes the + * (extended) supported rates and HT information (where applicable). + * When the scan finishes, ieee80211_scan_completed() must be called; + * note that it also must be called when the scan cannot finish due to + * any error unless this callback returned a negative error code. * * @sw_scan_start: Notifier function that is called just before a software scan * is started. Can be NULL, if the driver doesn't need this notification. @@ -1572,6 +1625,20 @@ void ieee80211_unregister_hw(struct ieee80211_hw *hw); */ void ieee80211_free_hw(struct ieee80211_hw *hw); +/** + * ieee80211_restart_hw - restart hardware completely + * + * Call this function when the hardware was restarted for some reason + * (hardware error, ...) and the driver is unable to restore its state + * by itself. mac80211 assumes that at this point the driver/hardware + * is completely uninitialised and stopped, it starts the process by + * calling the ->start() operation. The driver will need to reset all + * internal state that it has prior to calling this function. + * + * @hw: the hardware to restart + */ +void ieee80211_restart_hw(struct ieee80211_hw *hw); + /* trick to avoid symbol clashes with the ieee80211 subsystem */ void __ieee80211_rx(struct ieee80211_hw *hw, struct sk_buff *skb, struct ieee80211_rx_status *status); diff --git a/include/net/regulatory.h b/include/net/regulatory.h new file mode 100644 index 00000000000..47995b81c5d --- /dev/null +++ b/include/net/regulatory.h @@ -0,0 +1,101 @@ +#ifndef __NET_REGULATORY_H +#define __NET_REGULATORY_H +/* + * regulatory support structures + * + * Copyright 2008-2009 Luis R. Rodriguez <lrodriguez@atheros.com> + * + * 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. + */ + + +/** + * enum environment_cap - Environment parsed from country IE + * @ENVIRON_ANY: indicates country IE applies to both indoor and + * outdoor operation. + * @ENVIRON_INDOOR: indicates country IE applies only to indoor operation + * @ENVIRON_OUTDOOR: indicates country IE applies only to outdoor operation + */ +enum environment_cap { + ENVIRON_ANY, + ENVIRON_INDOOR, + ENVIRON_OUTDOOR, +}; + +/** + * struct regulatory_request - used to keep track of regulatory requests + * + * @wiphy_idx: this is set if this request's initiator is + * %REGDOM_SET_BY_COUNTRY_IE or %REGDOM_SET_BY_DRIVER. This + * can be used by the wireless core to deal with conflicts + * and potentially inform users of which devices specifically + * cased the conflicts. + * @initiator: indicates who sent this request, could be any of + * of those set in nl80211_reg_initiator (%NL80211_REGDOM_SET_BY_*) + * @alpha2: the ISO / IEC 3166 alpha2 country code of the requested + * regulatory domain. We have a few special codes: + * 00 - World regulatory domain + * 99 - built by driver but a specific alpha2 cannot be determined + * 98 - result of an intersection between two regulatory domains + * @intersect: indicates whether the wireless core should intersect + * the requested regulatory domain with the presently set regulatory + * domain. + * @country_ie_checksum: checksum of the last processed and accepted + * country IE + * @country_ie_env: lets us know if the AP is telling us we are outdoor, + * indoor, or if it doesn't matter + * @list: used to insert into the reg_requests_list linked list + */ +struct regulatory_request { + int wiphy_idx; + enum nl80211_reg_initiator initiator; + char alpha2[2]; + bool intersect; + u32 country_ie_checksum; + enum environment_cap country_ie_env; + struct list_head list; +}; + +struct ieee80211_freq_range { + u32 start_freq_khz; + u32 end_freq_khz; + u32 max_bandwidth_khz; +}; + +struct ieee80211_power_rule { + u32 max_antenna_gain; + u32 max_eirp; +}; + +struct ieee80211_reg_rule { + struct ieee80211_freq_range freq_range; + struct ieee80211_power_rule power_rule; + u32 flags; +}; + +struct ieee80211_regdomain { + u32 n_reg_rules; + char alpha2[2]; + struct ieee80211_reg_rule reg_rules[]; +}; + +#define MHZ_TO_KHZ(freq) ((freq) * 1000) +#define KHZ_TO_MHZ(freq) ((freq) / 1000) +#define DBI_TO_MBI(gain) ((gain) * 100) +#define MBI_TO_DBI(gain) ((gain) / 100) +#define DBM_TO_MBM(gain) ((gain) * 100) +#define MBM_TO_DBM(gain) ((gain) / 100) + +#define REG_RULE(start, end, bw, gain, eirp, reg_flags) \ +{ \ + .freq_range.start_freq_khz = MHZ_TO_KHZ(start), \ + .freq_range.end_freq_khz = MHZ_TO_KHZ(end), \ + .freq_range.max_bandwidth_khz = MHZ_TO_KHZ(bw), \ + .power_rule.max_antenna_gain = DBI_TO_MBI(gain),\ + .power_rule.max_eirp = DBM_TO_MBM(eirp), \ + .flags = reg_flags, \ +} + +#endif diff --git a/include/net/wireless.h b/include/net/wireless.h deleted file mode 100644 index 64a76208580..00000000000 --- a/include/net/wireless.h +++ /dev/null @@ -1,472 +0,0 @@ -#ifndef __NET_WIRELESS_H -#define __NET_WIRELESS_H - -/* - * 802.11 device management - * - * Copyright 2007 Johannes Berg <johannes@sipsolutions.net> - */ - -#include <linux/netdevice.h> -#include <linux/debugfs.h> -#include <linux/list.h> -#include <linux/ieee80211.h> -#include <net/cfg80211.h> - -/** - * 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; -}; - -/** - * struct wiphy - wireless hardware description - * @idx: the wiphy index assigned to this item - * @class_dev: the class device representing /sys/class/ieee80211/<wiphy-name> - * @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. - */ -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; - - /* 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/<wiphyname> */ - struct dentry *debugfsdir; - - char priv[0] __attribute__((__aligned__(NETDEV_ALIGN))); -}; - -/** 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 - */ -struct wireless_dev { - struct wiphy *wiphy; - enum nl80211_iftype iftype; - - /* private to the generic wireless code */ - struct list_head list; - struct net_device *netdev; -}; - -/** - * wiphy_priv - return priv from wiphy - */ -static inline void *wiphy_priv(struct wiphy *wiphy) -{ - BUG_ON(!wiphy); - return &wiphy->priv; -} - -/** - * set_wiphy_dev - set device pointer for wiphy - */ -static inline void set_wiphy_dev(struct wiphy *wiphy, struct device *dev) -{ - wiphy->dev.parent = dev; -} - -/** - * wiphy_dev - get wiphy dev pointer - */ -static inline struct device *wiphy_dev(struct wiphy *wiphy) -{ - return wiphy->dev.parent; -} - -/** - * wiphy_name - get wiphy name - */ -static inline const char *wiphy_name(struct wiphy *wiphy) -{ - return dev_name(&wiphy->dev); -} - -/** - * wdev_priv - return wiphy priv from wireless_dev - */ -static inline void *wdev_priv(struct wireless_dev *wdev) -{ - BUG_ON(!wdev); - return wiphy_priv(wdev->wiphy); -} - -/** - * wiphy_new - create a new wiphy for use with cfg80211 - * - * 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 - * - * register the given wiphy - * - * 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 - * - * unregister a device with the given priv pointer. - * 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 - */ -extern void wiphy_free(struct wiphy *wiphy); - -/** - * 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); - -/** - * 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); - -#endif /* __NET_WIRELESS_H */ |