#include <linux/wireless.h>
#include <linux/device.h>
#include <linux/ieee80211.h>
-#include <net/wireless.h>
#include <net/cfg80211.h>
/**
*/
/**
- * struct ieee80211_ht_bss_info - describing BSS's HT characteristics
- *
- * This structure describes most essential parameters needed
- * to describe 802.11n HT characteristics in a BSS.
- *
- * @primary_channel: channel number of primery channel
- * @bss_cap: 802.11n's general BSS capabilities (e.g. channel width)
- * @bss_op_mode: 802.11n's BSS operation modes (e.g. HT protection)
- */
-struct ieee80211_ht_bss_info {
- u8 primary_channel;
- u8 bss_cap; /* use IEEE80211_HT_IE_CHA_ */
- u8 bss_op_mode; /* use IEEE80211_HT_IE_ */
-};
-
-/**
* enum ieee80211_max_queues - maximum number of queues
*
* @IEEE80211_MAX_QUEUES: Maximum number of regular device queues.
- * @IEEE80211_MAX_AMPDU_QUEUES: Maximum number of queues usable
- * for A-MPDU operation.
*/
enum ieee80211_max_queues {
- IEEE80211_MAX_QUEUES = 16,
- IEEE80211_MAX_AMPDU_QUEUES = 16,
+ IEEE80211_MAX_QUEUES = 4,
};
/**
* @BSS_CHANGED_ERP_SLOT: slot timing changed
* @BSS_CHANGED_HT: 802.11n parameters changed
* @BSS_CHANGED_BASIC_RATES: Basic rateset changed
+ * @BSS_CHANGED_BEACON_INT: Beacon interval changed
+ * @BSS_CHANGED_BSSID: BSSID changed, for whatever
+ * reason (IBSS and managed mode)
+ * @BSS_CHANGED_BEACON: Beacon data changed, retrieve
+ * new beacon (beaconing modes)
+ * @BSS_CHANGED_BEACON_ENABLED: Beaconing should be
+ * enabled/disabled (beaconing modes)
*/
enum ieee80211_bss_change {
BSS_CHANGED_ASSOC = 1<<0,
BSS_CHANGED_ERP_SLOT = 1<<3,
BSS_CHANGED_HT = 1<<4,
BSS_CHANGED_BASIC_RATES = 1<<5,
-};
-
-/**
- * struct ieee80211_bss_ht_conf - BSS's changing HT configuration
- * @operation_mode: HT operation mode (like in &struct ieee80211_ht_info)
- */
-struct ieee80211_bss_ht_conf {
- u16 operation_mode;
+ BSS_CHANGED_BEACON_INT = 1<<6,
+ BSS_CHANGED_BSSID = 1<<7,
+ BSS_CHANGED_BEACON = 1<<8,
+ BSS_CHANGED_BEACON_ENABLED = 1<<9,
};
/**
* @timestamp: beacon timestamp
* @beacon_int: beacon interval
* @assoc_capability: capabilities taken from assoc resp
- * @ht: BSS's HT configuration
* @basic_rates: bitmap of basic rates, each bit stands for an
* index into the rate table configured by the driver in
* the current band.
+ * @bssid: The BSSID for this BSS
+ * @enable_beacon: whether beaconing should be enabled or not
+ * @ht_operation_mode: HT operation mode (like in &struct ieee80211_ht_info).
+ * This field is only valid when the channel type is one of the HT types.
*/
struct ieee80211_bss_conf {
+ const u8 *bssid;
/* association related data */
bool assoc;
u16 aid;
bool use_cts_prot;
bool use_short_preamble;
bool use_short_slot;
+ bool enable_beacon;
u8 dtim_period;
u16 beacon_int;
u16 assoc_capability;
u64 timestamp;
- u64 basic_rates;
- struct ieee80211_bss_ht_conf ht;
+ u32 basic_rates;
+ u16 ht_operation_mode;
};
/**
* @IEEE80211_TX_CTL_RATE_CTRL_PROBE: internal to mac80211, can be
* set by rate control algorithms to indicate probe rate, will
* be cleared for fragmented frames (except on the last fragment)
+ * @IEEE80211_TX_INTFL_RCALGO: mac80211 internal flag, do not test or
+ * set this flag in the driver; indicates that the rate control
+ * algorithm was used and should be notified of TX status
+ * @IEEE80211_TX_INTFL_NEED_TXPROCESSING: completely internal to mac80211,
+ * used to indicate that a pending frame requires TX processing before
+ * it can be sent out.
+ * @IEEE80211_TX_INTFL_RETRIED: completely internal to mac80211,
+ * used to indicate that a frame was already retried due to PS
*/
enum mac80211_tx_control_flags {
IEEE80211_TX_CTL_REQ_TX_STATUS = BIT(0),
IEEE80211_TX_STAT_AMPDU = BIT(10),
IEEE80211_TX_STAT_AMPDU_NO_BACK = BIT(11),
IEEE80211_TX_CTL_RATE_CTRL_PROBE = BIT(12),
+ IEEE80211_TX_INTFL_RCALGO = BIT(13),
+ IEEE80211_TX_INTFL_NEED_TXPROCESSING = BIT(14),
+ IEEE80211_TX_INTFL_RETRIED = BIT(15),
};
+/**
+ * enum mac80211_rate_control_flags - per-rate flags set by the
+ * Rate Control algorithm.
+ *
+ * These flags are set by the Rate control algorithm for each rate during tx,
+ * in the @flags member of struct ieee80211_tx_rate.
+ *
+ * @IEEE80211_TX_RC_USE_RTS_CTS: Use RTS/CTS exchange for this rate.
+ * @IEEE80211_TX_RC_USE_CTS_PROTECT: CTS-to-self protection is required.
+ * This is set if the current BSS requires ERP protection.
+ * @IEEE80211_TX_RC_USE_SHORT_PREAMBLE: Use short preamble.
+ * @IEEE80211_TX_RC_MCS: HT rate.
+ * @IEEE80211_TX_RC_GREEN_FIELD: Indicates whether this rate should be used in
+ * Greenfield mode.
+ * @IEEE80211_TX_RC_40_MHZ_WIDTH: Indicates if the Channel Width should be 40 MHz.
+ * @IEEE80211_TX_RC_DUP_DATA: The frame should be transmitted on both of the
+ * adjacent 20 MHz channels, if the current channel type is
+ * NL80211_CHAN_HT40MINUS or NL80211_CHAN_HT40PLUS.
+ * @IEEE80211_TX_RC_SHORT_GI: Short Guard interval should be used for this rate.
+ */
enum mac80211_rate_control_flags {
IEEE80211_TX_RC_USE_RTS_CTS = BIT(0),
IEEE80211_TX_RC_USE_CTS_PROTECT = BIT(1),
* 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)
+ * @IEEE80211_CONF_IDLE: The device is running, but idle; if the flag is set
+ * the driver should be prepared to handle configuration requests but
+ * may turn the device off as much as possible. Typically, this flag will
+ * be set when an interface is set UP but not associated or scanning, but
+ * it can also be unset in that case when monitor interfaces are active.
*/
enum ieee80211_conf_flags {
IEEE80211_CONF_RADIOTAP = (1<<0),
IEEE80211_CONF_PS = (1<<1),
+ IEEE80211_CONF_IDLE = (1<<2),
};
-/* XXX: remove all this once drivers stop trying to use it */
-static inline int __deprecated __IEEE80211_CONF_SHORT_SLOT_TIME(void)
-{
- return 0;
-}
-#define IEEE80211_CONF_SHORT_SLOT_TIME (__IEEE80211_CONF_SHORT_SLOT_TIME())
-
-struct ieee80211_ht_conf {
- bool enabled;
- enum nl80211_channel_type channel_type;
-};
/**
* enum ieee80211_conf_changed - denotes which configuration changed
*
- * @IEEE80211_CONF_CHANGE_RADIO_ENABLED: the value of radio_enabled changed
- * @IEEE80211_CONF_CHANGE_BEACON_INTERVAL: the beacon interval changed
+ * @_IEEE80211_CONF_CHANGE_RADIO_ENABLED: DEPRECATED
* @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_PS: the PS flag or dynamic PS timeout changed
* @IEEE80211_CONF_CHANGE_POWER: the TX power changed
- * @IEEE80211_CONF_CHANGE_CHANNEL: the channel changed
+ * @IEEE80211_CONF_CHANGE_CHANNEL: the channel/channel_type changed
* @IEEE80211_CONF_CHANGE_RETRY_LIMITS: retry limits changed
- * @IEEE80211_CONF_CHANGE_HT: HT configuration changed
+ * @IEEE80211_CONF_CHANGE_IDLE: Idle flag changed
*/
enum ieee80211_conf_changed {
- IEEE80211_CONF_CHANGE_RADIO_ENABLED = BIT(0),
- IEEE80211_CONF_CHANGE_BEACON_INTERVAL = BIT(1),
+ _IEEE80211_CONF_CHANGE_RADIO_ENABLED = BIT(0),
IEEE80211_CONF_CHANGE_LISTEN_INTERVAL = BIT(2),
IEEE80211_CONF_CHANGE_RADIOTAP = BIT(3),
IEEE80211_CONF_CHANGE_PS = BIT(4),
IEEE80211_CONF_CHANGE_POWER = BIT(5),
IEEE80211_CONF_CHANGE_CHANNEL = BIT(6),
IEEE80211_CONF_CHANGE_RETRY_LIMITS = BIT(7),
- IEEE80211_CONF_CHANGE_HT = BIT(8),
+ IEEE80211_CONF_CHANGE_IDLE = BIT(8),
};
+static inline __deprecated enum ieee80211_conf_changed
+__IEEE80211_CONF_CHANGE_RADIO_ENABLED(void)
+{
+ return _IEEE80211_CONF_CHANGE_RADIO_ENABLED;
+}
+#define IEEE80211_CONF_CHANGE_RADIO_ENABLED \
+ __IEEE80211_CONF_CHANGE_RADIO_ENABLED()
+
/**
* struct ieee80211_conf - configuration of the device
*
* 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)
+ * @beacon_int: DEPRECATED, DO NOT USE
+ *
* @listen_interval: listen interval in units of beacon interval
- * @flags: configuration flags defined above
+ * @max_sleep_period: 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)
+ *
* @channel: the channel to tune to
- * @ht: the HT configuration for the device
+ * @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
* number of transmissions not the number of retries
*/
struct ieee80211_conf {
- int beacon_int;
+ int __deprecated beacon_int;
u32 flags;
- int power_level;
+ int power_level, dynamic_ps_timeout;
+ int max_sleep_period;
u16 listen_interval;
- bool radio_enabled;
+ bool __deprecated radio_enabled;
u8 long_frame_max_tx_count, short_frame_max_tx_count;
struct ieee80211_channel *channel;
- struct ieee80211_ht_conf ht;
+ enum nl80211_channel_type channel_type;
};
/**
};
/**
- * enum ieee80211_if_conf_change - interface config change flags
- *
- * @IEEE80211_IFCC_BSSID: The BSSID changed.
- * @IEEE80211_IFCC_BEACON: The beacon for this interface changed
- * (currently AP and MESH only), use ieee80211_beacon_get().
- */
-enum ieee80211_if_conf_change {
- IEEE80211_IFCC_BSSID = BIT(0),
- IEEE80211_IFCC_BEACON = BIT(1),
-};
-
-/**
- * struct ieee80211_if_conf - configuration of an interface
- *
- * @changed: parameters that have changed, see &enum ieee80211_if_conf_change.
- * @bssid: BSSID of the network we are associated to/creating.
- *
- * This structure is passed to the config_interface() callback of
- * &struct ieee80211_hw.
- */
-struct ieee80211_if_conf {
- u32 changed;
- u8 *bssid;
-};
-
-/**
* enum ieee80211_key_alg - key algorithm
* @ALG_WEP: WEP40 or WEP104
* @ALG_TKIP: TKIP
* @ALG_CCMP: CCMP (AES)
+ * @ALG_AES_CMAC: AES-128-CMAC
*/
enum ieee80211_key_alg {
ALG_WEP,
ALG_TKIP,
ALG_CCMP,
-};
-
-/**
- * enum ieee80211_key_len - key length
- * @LEN_WEP40: WEP 5-byte long key
- * @LEN_WEP104: WEP 13-byte long key
- */
-enum ieee80211_key_len {
- LEN_WEP40 = 5,
- LEN_WEP104 = 13,
+ ALG_AES_CMAC,
};
/**
* generation in software.
* @IEEE80211_KEY_FLAG_PAIRWISE: Set by mac80211, this flag indicates
* that the key is pairwise rather then a shared key.
+ * @IEEE80211_KEY_FLAG_SW_MGMT: This flag should be set by the driver for a
+ * CCMP key if it requires CCMP encryption of management frames (MFP) to
+ * be done in software.
*/
enum ieee80211_key_flags {
IEEE80211_KEY_FLAG_WMM_STA = 1<<0,
IEEE80211_KEY_FLAG_GENERATE_IV = 1<<1,
IEEE80211_KEY_FLAG_GENERATE_MMIC= 1<<2,
IEEE80211_KEY_FLAG_PAIRWISE = 1<<3,
+ IEEE80211_KEY_FLAG_SW_MGMT = 1<<4,
};
/**
* - Temporal Encryption Key (128 bits)
* - Temporal Authenticator Tx MIC Key (64 bits)
* - Temporal Authenticator Rx MIC Key (64 bits)
- * @icv_len: FIXME
- * @iv_len: FIXME
+ * @icv_len: The ICV length for this key type
+ * @iv_len: The IV length for this key type
*/
struct ieee80211_key_conf {
enum ieee80211_key_alg alg;
* sizeof(void *), size is determined in hw information.
*/
struct ieee80211_sta {
- u64 supp_rates[IEEE80211_NUM_BANDS];
+ u32 supp_rates[IEEE80211_NUM_BANDS];
u8 addr[ETH_ALEN];
u16 aid;
struct ieee80211_sta_ht_cap ht_cap;
* expect values between 0 and @max_signal.
* If possible please provide dB or dBm instead.
*
- * @IEEE80211_HW_SIGNAL_DB:
- * Hardware gives signal values in dB, decibel difference from an
- * arbitrary, fixed reference. We expect values between 0 and @max_signal.
- * If possible please provide dBm instead.
- *
* @IEEE80211_HW_SIGNAL_DBM:
* Hardware gives signal values in dBm, decibel difference from
* one milliwatt. This is the preferred method since it is standardized
* @IEEE80211_HW_AMPDU_AGGREGATION:
* Hardware supports 11n A-MPDU aggregation.
*
- * @IEEE80211_HW_NO_STACK_DYNAMIC_PS:
- * Hardware which has dynamic power save support, meaning
- * that power save is enabled in idle periods, and don't need support
- * from stack.
+ * @IEEE80211_HW_SUPPORTS_PS:
+ * Hardware has power save support (i.e. can go to sleep).
+ *
+ * @IEEE80211_HW_PS_NULLFUNC_STACK:
+ * Hardware requires nullfunc frame handling in stack, implies
+ * stack support for dynamic PS.
+ *
+ * @IEEE80211_HW_SUPPORTS_DYNAMIC_PS:
+ * Hardware has support for dynamic PS.
+ *
+ * @IEEE80211_HW_MFP_CAPABLE:
+ * Hardware supports management frame protection (MFP, IEEE 802.11w).
+ *
+ * @IEEE80211_HW_BEACON_FILTER:
+ * Hardware supports dropping of irrelevant beacon frames to
+ * avoid waking up cpu.
*/
enum ieee80211_hw_flags {
IEEE80211_HW_RX_INCLUDES_FCS = 1<<1,
IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE = 1<<3,
IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE = 1<<4,
IEEE80211_HW_SIGNAL_UNSPEC = 1<<5,
- IEEE80211_HW_SIGNAL_DB = 1<<6,
- IEEE80211_HW_SIGNAL_DBM = 1<<7,
- IEEE80211_HW_NOISE_DBM = 1<<8,
- IEEE80211_HW_SPECTRUM_MGMT = 1<<9,
- IEEE80211_HW_AMPDU_AGGREGATION = 1<<10,
- IEEE80211_HW_NO_STACK_DYNAMIC_PS = 1<<11,
+ IEEE80211_HW_SIGNAL_DBM = 1<<6,
+ IEEE80211_HW_NOISE_DBM = 1<<7,
+ IEEE80211_HW_SPECTRUM_MGMT = 1<<8,
+ IEEE80211_HW_AMPDU_AGGREGATION = 1<<9,
+ IEEE80211_HW_SUPPORTS_PS = 1<<10,
+ IEEE80211_HW_PS_NULLFUNC_STACK = 1<<11,
+ IEEE80211_HW_SUPPORTS_DYNAMIC_PS = 1<<12,
+ IEEE80211_HW_MFP_CAPABLE = 1<<13,
+ IEEE80211_HW_BEACON_FILTER = 1<<14,
};
/**
* @workqueue: single threaded workqueue available for driver use,
* allocated by mac80211 on registration and flushed when an
* interface is removed.
- * NOTICE: All work performed on this workqueue should NEVER
- * acquire the RTNL lock (i.e. Don't use the function
- * ieee80211_iterate_active_interfaces())
+ * NOTICE: All work performed on this workqueue must not
+ * acquire the RTNL lock.
*
* @priv: pointer to private area that was allocated for driver use
* along with this structure.
* data packets. WMM/QoS requires at least four, these
* queues need to have configurable access parameters.
*
- * @ampdu_queues: number of available hardware transmit queues
- * for A-MPDU packets, these have no access parameters
- * because they're used only for A-MPDU frames. Note that
- * mac80211 will not currently use any of the regular queues
- * for aggregation.
- *
* @rate_control_algorithm: rate control algorithm for this hardware.
* If unset (NULL), the default algorithm will be used. Must be
* set before calling ieee80211_register_hw().
int vif_data_size;
int sta_data_size;
u16 queues;
- u16 ampdu_queues;
u16 max_listen_interval;
s8 max_signal;
u8 max_rates;
};
/**
+ * wiphy_to_ieee80211_hw - return a mac80211 driver hw struct from a wiphy
+ *
+ * @wiphy: the &struct wiphy which we want to query
+ *
+ * mac80211 drivers can use this to get to their respective
+ * &struct ieee80211_hw. Drivers wishing to get to their own private
+ * structure can then access it via hw->priv. Note that mac802111 drivers should
+ * not use wiphy_priv() to try to get their private driver structure as this
+ * is already used internally by mac80211.
+ */
+struct ieee80211_hw *wiphy_to_ieee80211_hw(struct wiphy *wiphy);
+
+/**
* SET_IEEE80211_DEV - set device for 802.11 hardware
*
* @hw: the &struct ieee80211_hw to set the device for
memcpy(hw->wiphy->perm_addr, addr, ETH_ALEN);
}
-static inline int ieee80211_num_regular_queues(struct ieee80211_hw *hw)
-{
- return hw->queues;
-}
-
-static inline int ieee80211_num_queues(struct ieee80211_hw *hw)
-{
- return hw->queues + hw->ampdu_queues;
-}
-
static inline struct ieee80211_rate *
ieee80211_get_tx_rate(const struct ieee80211_hw *hw,
const struct ieee80211_tx_info *c)
*
* The set_key() callback in the &struct ieee80211_ops for a given
* device is called to enable hardware acceleration of encryption and
- * decryption. The callback takes an @address parameter that will be
- * the broadcast address for default keys, the other station's hardware
- * address for individual keys or the zero address for keys that will
- * be used only for transmission.
+ * decryption. The callback takes a @sta parameter that will be NULL
+ * for default keys or keys used for transmission only, or point to
+ * the station information for the peer for individual keys.
* Multiple transmission keys with the same key index may be used when
* VLANs are configured for an access point.
*
- * The @local_address parameter will always be set to our own address,
- * this is only relevant if you support multiple local addresses.
- *
* When transmitting, the TX control data will use the @hw_key_idx
* selected by the driver by modifying the &struct ieee80211_key_conf
* pointed to by the @key parameter to the set_key() function.
*/
/**
+ * DOC: Powersave support
+ *
+ * mac80211 has support for various powersave implementations.
+ *
+ * First, it can support hardware that handles all powersaving by
+ * itself, such hardware should simply set the %IEEE80211_HW_SUPPORTS_PS
+ * hardware flag. In that case, it will be told about the desired
+ * powersave mode depending on the association status, and the driver
+ * must take care of sending nullfunc frames when necessary, i.e. when
+ * entering and leaving powersave mode. The driver is required to look at
+ * the AID in beacons and signal to the AP that it woke up when it finds
+ * traffic directed to it. This mode supports dynamic PS by simply
+ * enabling/disabling PS.
+ *
+ * Additionally, such hardware may set the %IEEE80211_HW_SUPPORTS_DYNAMIC_PS
+ * flag to indicate that it can support dynamic PS mode itself (see below).
+ *
+ * Other hardware designs cannot send nullfunc frames by themselves and also
+ * 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. 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
+ * a frame so that reply frames need not be buffered and therefore delayed
+ * to the next wakeup. This can either be supported by hardware, in which case
+ * the driver needs to look at the @dynamic_ps_timeout hardware configuration
+ * value, or by the stack if all nullfunc handling is in the stack.
+ */
+
+/**
+ * DOC: Beacon filter support
+ *
+ * Some hardware have beacon filter support to reduce host cpu wakeups
+ * which will reduce system power consumption. It usuallly works so that
+ * the firmware creates a checksum of the beacon but omits all constantly
+ * changing elements (TSF, TIM etc). Whenever the checksum changes the
+ * beacon is forwarded to the host, otherwise it will be just dropped. That
+ * way the host will only receive beacons where some relevant information
+ * (for example ERP protection or WMM settings) have changed.
+ *
+ * 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.
+ */
+
+/**
* DOC: Frame filtering
*
* mac80211 requires to see many management frames for proper
* @IEEE80211_AMPDU_RX_STOP: stop Rx aggregation
* @IEEE80211_AMPDU_TX_START: start Tx aggregation
* @IEEE80211_AMPDU_TX_STOP: stop Tx aggregation
- * @IEEE80211_AMPDU_TX_RESUME: resume TX aggregation
+ * @IEEE80211_AMPDU_TX_OPERATIONAL: TX aggregation has become operational
*/
enum ieee80211_ampdu_mlme_action {
IEEE80211_AMPDU_RX_START,
IEEE80211_AMPDU_RX_STOP,
IEEE80211_AMPDU_TX_START,
IEEE80211_AMPDU_TX_STOP,
- IEEE80211_AMPDU_TX_RESUME,
+ IEEE80211_AMPDU_TX_OPERATIONAL,
};
/**
* configuration in the TX control data. This handler should,
* preferably, never fail and stop queues appropriately, more
* importantly, however, it must never fail for A-MPDU-queues.
+ * This function should return NETDEV_TX_OK except in very
+ * limited cases.
* Must be implemented and atomic.
*
* @start: Called before the first netdevice attached to the hardware
*
* @config: Handler for configuration requests. IEEE 802.11 code calls this
* function to change hardware configuration, e.g., channel.
- *
- * @config_interface: Handler for configuration requests related to interfaces
- * (e.g. BSSID changes.)
+ * This function should never fail but returns a negative error code
+ * if it does.
*
* @bss_info_changed: Handler for configuration requests related to BSS
* parameters that may vary during BSS's lifespan, and may affect low
*
* @set_key: See the section "Hardware crypto acceleration"
* This callback can sleep, and is only called between add_interface
- * and remove_interface calls, i.e. while the interface with the
- * given local_address is enabled.
+ * and remove_interface calls, i.e. while the given virtual interface
+ * is enabled.
+ * Returns a negative error code if the key can't be added.
*
* @update_tkip_key: See the section "Hardware crypto acceleration"
* This callback will be called in the context of Rx. Called for drivers
*
* @hw_scan: Ask the hardware to service the scan request, no need to start
* the scan state machine in stack. The scan must honour the channel
- * configuration done by the regulatory agent in the wiphy's registered
- * bands. 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!
- *
- * @get_stats: return low-level statistics
+ * 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.
+ * 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.
+ *
+ * @sw_scan_complete: Notifier function that is called just after a software scan
+ * finished. Can be NULL, if the driver doesn't need this notification.
+ *
+ * @get_stats: Return low-level statistics.
+ * Returns zero if statistics are available.
*
* @get_tkip_seq: If your device implements TKIP encryption in hardware this
* callback should be provided to read the TKIP transmit IVs (both IV32
*
* @conf_tx: Configure TX queue parameters (EDCF (aifs, cw_min, cw_max),
* bursting) for a hardware TX queue.
+ * Returns a negative error code on failure.
*
* @get_tx_stats: Get statistics of the current TX queue status. This is used
* to get number of currently queued packets (queue length), maximum queue
* size (limit), and total number of packets sent using each TX queue
- * (count). The 'stats' pointer points to an array that has hw->queues +
- * hw->ampdu_queues items.
+ * (count). The 'stats' pointer points to an array that has hw->queues
+ * items.
*
* @get_tsf: Get the current TSF timer value from firmware/hardware. Currently,
- * this is only used for IBSS mode debugging and, as such, is not a
- * required function. Must be atomic.
+ * this is only used for IBSS mode BSSID merging and debugging. Is not a
+ * required function.
+ *
+ * @set_tsf: Set the TSF timer to the specified value in the firmware/hardware.
+ * Currently, this is only used for IBSS mode debugging. Is not a
+ * required function.
*
* @reset_tsf: Reset the TSF timer and allow firmware/hardware to synchronize
* with other STAs in the IBSS. This is only used in IBSS mode. This
* @tx_last_beacon: Determine whether the last IBSS beacon was sent by us.
* This is needed only for IBSS mode and the result of this function is
* used to determine whether to reply to Probe Requests.
+ * Returns non-zero if this device sent the last beacon.
*
* @ampdu_action: Perform a certain A-MPDU action
* The RA/TID combination determines the destination and TID we want
* the ampdu action to be performed for. The action is defined through
* ieee80211_ampdu_mlme_action. Starting sequence number (@ssn)
- * is the first frame we expect to perform the action on. notice
+ * is the first frame we expect to perform the action on. Notice
* that TX/RX_STOP can pass NULL for this parameter.
+ * Returns a negative error code on failure.
+ *
+ * @rfkill_poll: Poll rfkill hardware state. If you need this, you also
+ * need to set wiphy->rfkill_poll to %true before registration,
+ * and need to call wiphy_rfkill_set_hw_state() in the callback.
*/
struct ieee80211_ops {
int (*tx)(struct ieee80211_hw *hw, struct sk_buff *skb);
void (*remove_interface)(struct ieee80211_hw *hw,
struct ieee80211_if_init_conf *conf);
int (*config)(struct ieee80211_hw *hw, u32 changed);
- int (*config_interface)(struct ieee80211_hw *hw,
- struct ieee80211_vif *vif,
- struct ieee80211_if_conf *conf);
void (*bss_info_changed)(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_bss_conf *info,
int (*set_tim)(struct ieee80211_hw *hw, struct ieee80211_sta *sta,
bool set);
int (*set_key)(struct ieee80211_hw *hw, enum set_key_cmd cmd,
- const u8 *local_address, const u8 *address,
+ struct ieee80211_vif *vif, struct ieee80211_sta *sta,
struct ieee80211_key_conf *key);
void (*update_tkip_key)(struct ieee80211_hw *hw,
struct ieee80211_key_conf *conf, const u8 *address,
u32 iv32, u16 *phase1key);
- int (*hw_scan)(struct ieee80211_hw *hw, u8 *ssid, size_t len);
+ int (*hw_scan)(struct ieee80211_hw *hw,
+ struct cfg80211_scan_request *req);
+ void (*sw_scan_start)(struct ieee80211_hw *hw);
+ void (*sw_scan_complete)(struct ieee80211_hw *hw);
int (*get_stats)(struct ieee80211_hw *hw,
struct ieee80211_low_level_stats *stats);
void (*get_tkip_seq)(struct ieee80211_hw *hw, u8 hw_key_idx,
int (*get_tx_stats)(struct ieee80211_hw *hw,
struct ieee80211_tx_queue_stats *stats);
u64 (*get_tsf)(struct ieee80211_hw *hw);
+ void (*set_tsf)(struct ieee80211_hw *hw, u64 tsf);
void (*reset_tsf)(struct ieee80211_hw *hw);
int (*tx_last_beacon)(struct ieee80211_hw *hw);
int (*ampdu_action)(struct ieee80211_hw *hw,
enum ieee80211_ampdu_mlme_action action,
struct ieee80211_sta *sta, u16 tid, u16 *ssn);
+
+ void (*rfkill_poll)(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);
ieee80211_get_buffered_bc(struct ieee80211_hw *hw, struct ieee80211_vif *vif);
/**
- * ieee80211_get_hdrlen_from_skb - get header length from data
- *
- * Given an skb with a raw 802.11 header at the data pointer this function
- * returns the 802.11 header length in bytes (not including encryption
- * headers). If the data in the sk_buff is too short to contain a valid 802.11
- * header the function returns 0.
- *
- * @skb: the frame
- */
-unsigned int ieee80211_get_hdrlen_from_skb(const struct sk_buff *skb);
-
-/**
- * ieee80211_hdrlen - get header length in bytes from frame control
- * @fc: frame control field in little-endian format
- */
-unsigned int ieee80211_hdrlen(__le16 fc);
-
-/**
* ieee80211_get_tkip_key - get a TKIP rc4 for skb
*
* This function computes a TKIP rc4 key for an skb. It computes
* mac80211 that the scan finished.
*
* @hw: the hardware that finished the scan
+ * @aborted: set to true if scan was aborted
*/
-void ieee80211_scan_completed(struct ieee80211_hw *hw);
+void ieee80211_scan_completed(struct ieee80211_hw *hw, bool aborted);
/**
* ieee80211_iterate_active_interfaces - iterate active interfaces
struct ieee80211_sta *ieee80211_find_sta(struct ieee80211_hw *hw,
const u8 *addr);
+/**
+ * ieee80211_beacon_loss - inform hardware does not receive beacons
+ *
+ * @vif: &struct ieee80211_vif pointer from &struct ieee80211_if_init_conf.
+ *
+ * When beacon filtering is enabled with IEEE80211_HW_BEACON_FILTERING and
+ * IEEE80211_CONF_PS is set, the driver needs to inform whenever the
+ * hardware is not receiving beacons with this function.
+ */
+void ieee80211_beacon_loss(struct ieee80211_vif *vif);
/* Rate control API */
/**
+ * enum rate_control_changed - flags to indicate which parameter changed
+ *
+ * @IEEE80211_RC_HT_CHANGED: The HT parameters of the operating channel have
+ * changed, rate control algorithm can update its internal state if needed.
+ */
+enum rate_control_changed {
+ IEEE80211_RC_HT_CHANGED = BIT(0)
+};
+
+/**
* struct ieee80211_tx_rate_control - rate control information for/from RC algo
*
* @hw: The hardware the algorithm is invoked for.
void *(*alloc_sta)(void *priv, struct ieee80211_sta *sta, gfp_t gfp);
void (*rate_init)(void *priv, struct ieee80211_supported_band *sband,
struct ieee80211_sta *sta, void *priv_sta);
+ void (*rate_update)(void *priv, struct ieee80211_supported_band *sband,
+ struct ieee80211_sta *sta,
+ void *priv_sta, u32 changed);
void (*free_sta)(void *priv, struct ieee80211_sta *sta,
void *priv_sta);
int ieee80211_rate_control_register(struct rate_control_ops *ops);
void ieee80211_rate_control_unregister(struct rate_control_ops *ops);
+static inline bool
+conf_is_ht20(struct ieee80211_conf *conf)
+{
+ return conf->channel_type == NL80211_CHAN_HT20;
+}
+
+static inline bool
+conf_is_ht40_minus(struct ieee80211_conf *conf)
+{
+ return conf->channel_type == NL80211_CHAN_HT40MINUS;
+}
+
+static inline bool
+conf_is_ht40_plus(struct ieee80211_conf *conf)
+{
+ return conf->channel_type == NL80211_CHAN_HT40PLUS;
+}
+
+static inline bool
+conf_is_ht40(struct ieee80211_conf *conf)
+{
+ return conf_is_ht40_minus(conf) || conf_is_ht40_plus(conf);
+}
+
+static inline bool
+conf_is_ht(struct ieee80211_conf *conf)
+{
+ return conf->channel_type != NL80211_CHAN_NO_HT;
+}
+
#endif /* MAC80211_H */