*/
/**
+ * DOC: mac80211 workqueue
+ *
+ * mac80211 provides its own workqueue for drivers and internal mac80211 use.
+ * The workqueue is a single threaded workqueue and can only be accessed by
+ * helpers for sanity checking. Drivers must ensure all work added onto the
+ * mac80211 workqueue should be cancelled on the driver stop() callback.
+ *
+ * mac80211 will flushed the workqueue upon interface removal and during
+ * suspend.
+ *
+ * All work performed on the mac80211 workqueue must not acquire the RTNL lock.
+ *
+ */
+
+/**
* enum ieee80211_max_queues - maximum number of queues
*
* @IEEE80211_MAX_QUEUES: Maximum number of regular device queues.
* @IEEE80211_TX_CTL_AMPDU: this frame should be sent as part of an A-MPDU
* @IEEE80211_TX_CTL_INJECTED: Frame was injected, internal to mac80211.
* @IEEE80211_TX_STAT_TX_FILTERED: The frame was not transmitted
- * because the destination STA was in powersave mode.
+ * because the destination STA was in powersave mode. Note that to
+ * avoid race conditions, the filter must be set by the hardware or
+ * firmware upon receiving a frame that indicates that the station
+ * went to sleep (must be done on device to filter frames already on
+ * the queue) and may only be unset after mac80211 gives the OK for
+ * that by setting the IEEE80211_TX_CTL_CLEAR_PS_FILT (see above),
+ * since only then is it guaranteed that no more frames are in the
+ * hardware queue.
* @IEEE80211_TX_STAT_ACK: Frame was acknowledged
* @IEEE80211_TX_STAT_AMPDU: The frame was aggregated, so status
* is for the whole aggregation.
* 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
+ * @IEEE80211_TX_INTFL_DONT_ENCRYPT: completely internal to mac80211,
+ * used to indicate frame should not be encrypted
+ * @IEEE80211_TX_CTL_PSPOLL_RESPONSE: (internal?)
+ * This frame is a response to a PS-poll frame and should be sent
+ * although the station is in powersave mode.
+ * @IEEE80211_TX_CTL_MORE_FRAMES: More frames will be passed to the
+ * transmit function after the current frame, this can be used
+ * by drivers to kick the DMA queue only if unset or when the
+ * queue gets full.
*/
enum mac80211_tx_control_flags {
IEEE80211_TX_CTL_REQ_TX_STATUS = BIT(0),
IEEE80211_TX_INTFL_RCALGO = BIT(13),
IEEE80211_TX_INTFL_NEED_TXPROCESSING = BIT(14),
IEEE80211_TX_INTFL_RETRIED = BIT(15),
+ IEEE80211_TX_INTFL_DONT_ENCRYPT = BIT(16),
+ IEEE80211_TX_CTL_PSPOLL_RESPONSE = BIT(17),
+ IEEE80211_TX_CTL_MORE_FRAMES = BIT(18),
};
/**
*
* When used for transmit status reporting, the driver should
* always report the rate along with the flags it used.
+ *
+ * &struct ieee80211_tx_info contains an array of these structs
+ * in the control information, and it will be filled by the rate
+ * control algorithm according to what should be sent. For example,
+ * if this array contains, in the format { <idx>, <count> } the
+ * information
+ * { 3, 2 }, { 2, 2 }, { 1, 4 }, { -1, 0 }, { -1, 0 }
+ * then this means that the frame should be transmitted
+ * up to twice at rate 3, up to twice at rate 2, and up to four
+ * times at rate 1 if it doesn't get acknowledged. Say it gets
+ * acknowledged by the peer after the fifth attempt, the status
+ * information should then contain
+ * { 3, 2 }, { 2, 2 }, { 1, 1 }, { -1, 0 } ...
+ * since it was transmitted twice at rate 3, twice at rate 2
+ * and once at rate 1 after which we received an acknowledgement.
*/
struct ieee80211_tx_rate {
s8 idx;
/**
* enum ieee80211_conf_changed - denotes which configuration 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 or dynamic PS timeout changed
* @IEEE80211_CONF_CHANGE_IDLE: Idle flag changed
*/
enum ieee80211_conf_changed {
- _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_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
*
*
* @flags: configuration flags defined above
*
- * @radio_enabled: when zero, driver is required to switch off the radio.
- * @beacon_int: DEPRECATED, DO NOT USE
- *
* @listen_interval: listen interval in units of beacon interval
* @max_sleep_period: the maximum number of beacon intervals to sleep for
* before checking the beacon for a TIM bit (managed mode only); this
* number of transmissions not the number of retries
*/
struct ieee80211_conf {
- int __deprecated beacon_int;
u32 flags;
int power_level, dynamic_ps_timeout;
int max_sleep_period;
u16 listen_interval;
- bool __deprecated radio_enabled;
u8 long_frame_max_tx_count, short_frame_max_tx_count;
*
* @conf: &struct ieee80211_conf, device configuration, don't use.
*
- * @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 must not
- * acquire the RTNL lock.
- *
* @priv: pointer to private area that was allocated for driver use
* along with this structure.
*
struct ieee80211_hw {
struct ieee80211_conf conf;
struct wiphy *wiphy;
- struct workqueue_struct *workqueue;
const char *rate_control_algorithm;
void *priv;
u32 flags;
* the driver's configure_filter() function which frames should be
* passed to mac80211 and which should be filtered out.
*
- * The configure_filter() callback is invoked with the parameters
- * @mc_count and @mc_list for the combined multicast address list
- * of all virtual interfaces, @changed_flags telling which flags
- * were changed and @total_flags with the new flag states.
+ * Before configure_filter() is invoked, the prepare_multicast()
+ * callback is invoked with the parameters @mc_count and @mc_list
+ * for the combined multicast address list of all virtual interfaces.
+ * It's use is optional, and it returns a u64 that is passed to
+ * configure_filter(). Additionally, configure_filter() has the
+ * arguments @changed_flags telling which flags were changed and
+ * @total_flags with the new flag states.
*
* If your device has no multicast address filters your driver will
* need to check both the %FIF_ALLMULTI flag and the @mc_count
* mac80211 needs to do and the amount of CPU wakeups, so you should
* honour this flag if possible.
*
- * @FIF_CONTROL: pass control frames, if PROMISC_IN_BSS is not set then
- * only those addressed to this station
+ * @FIF_CONTROL: pass control frames (except for PS Poll), if PROMISC_IN_BSS
+ * is not set then only those addressed to this station.
*
* @FIF_OTHER_BSS: pass frames destined to other BSSes
+ *
+ * @FIF_PSPOLL: pass PS Poll frames, if PROMISC_IN_BSS is not set then only
+ * those addressed to this station.
*/
enum ieee80211_filter_flags {
FIF_PROMISC_IN_BSS = 1<<0,
FIF_BCN_PRBRESP_PROMISC = 1<<4,
FIF_CONTROL = 1<<5,
FIF_OTHER_BSS = 1<<6,
+ FIF_PSPOLL = 1<<7,
};
/**
* is disabled. This should turn off the hardware (at least
* it must turn off frame reception.)
* May be called right after add_interface if that rejects
- * an interface.
+ * an interface. If you added any work onto the mac80211 workqueue
+ * you should ensure to cancel it on this callback.
* Must be implemented.
*
* @add_interface: Called when a netdevice attached to the hardware is
* for association indication. The @changed parameter indicates which
* of the bss parameters has changed when a call is made.
*
+ * @prepare_multicast: Prepare for multicast filter configuration.
+ * This callback is optional, and its return value is passed
+ * to configure_filter(). This callback must be atomic.
+ *
* @configure_filter: Configure the device's RX filter.
* See the section "Frame filtering" for more information.
- * This callback must be implemented and atomic.
+ * This callback must be implemented.
*
* @set_tim: Set TIM bit. mac80211 calls this function when a TIM bit
* must be set or cleared for a given STA. Must be atomic.
struct ieee80211_vif *vif,
struct ieee80211_bss_conf *info,
u32 changed);
+ u64 (*prepare_multicast)(struct ieee80211_hw *hw,
+ int mc_count, struct dev_addr_list *mc_list);
void (*configure_filter)(struct ieee80211_hw *hw,
unsigned int changed_flags,
unsigned int *total_flags,
- int mc_count, struct dev_addr_list *mc_list);
+ u64 multicast);
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,
*/
void ieee80211_restart_hw(struct ieee80211_hw *hw);
-/*
- * trick to avoid symbol clashes with the ieee80211 subsystem,
- * use the inline below instead
- */
-void __ieee80211_rx(struct ieee80211_hw *hw, struct sk_buff *skb);
-
/**
* ieee80211_rx - receive frame
*
* to this function and ieee80211_rx_irqsafe() may not be mixed for a
* single hardware.
*
+ * Note that right now, this function must be called with softirqs disabled.
+ *
* @hw: the hardware this frame came in on
* @skb: the buffer to receive, owned by mac80211 after this call
*/
-static inline void ieee80211_rx(struct ieee80211_hw *hw, struct sk_buff *skb)
-{
- __ieee80211_rx(hw, skb);
-}
+void ieee80211_rx(struct ieee80211_hw *hw, struct sk_buff *skb);
/**
* ieee80211_rx_irqsafe - receive frame
void *data);
/**
+ * ieee80211_queue_work - add work onto the mac80211 workqueue
+ *
+ * Drivers and mac80211 use this to add work onto the mac80211 workqueue.
+ * This helper ensures drivers are not queueing work when they should not be.
+ *
+ * @hw: the hardware struct for the interface we are adding work for
+ * @work: the work we want to add onto the mac80211 workqueue
+ */
+void ieee80211_queue_work(struct ieee80211_hw *hw, struct work_struct *work);
+
+/**
+ * ieee80211_queue_delayed_work - add work onto the mac80211 workqueue
+ *
+ * Drivers and mac80211 use this to queue delayed work onto the mac80211
+ * workqueue.
+ *
+ * @hw: the hardware struct for the interface we are adding work for
+ * @dwork: delayable work to queue onto the mac80211 workqueue
+ * @delay: number of jiffies to wait before queueing
+ */
+void ieee80211_queue_delayed_work(struct ieee80211_hw *hw,
+ struct delayed_work *dwork,
+ unsigned long delay);
+
+/**
* ieee80211_start_tx_ba_session - Start a tx Block Ack session.
* @hw: pointer as obtained from ieee80211_alloc_hw().
* @ra: receiver address of the BA session recipient
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff