* @IEEE80211_MAX_QUEUES: Maximum number of regular device queues.
*/
enum ieee80211_max_queues {
- IEEE80211_MAX_QUEUES = 4,
+ IEEE80211_MAX_QUEUES = 16,
};
+#define IEEE80211_INVAL_HW_QUEUE 0xff
+
/**
* enum ieee80211_ac_numbers - AC numbers as used in mac80211
* @IEEE80211_AC_VO: voice
* @channel_type: Channel type for this BSS -- the hardware might be
* configured for HT40+ while this BSS only uses no-HT, for
* example.
- * @ht_operation_mode: HT operation mode (like in &struct ieee80211_ht_info).
+ * @ht_operation_mode: HT operation mode like in &struct ieee80211_ht_operation.
* This field is only valid when the channel type is one of the HT types.
* @cqm_rssi_thold: Connection quality monitor RSSI threshold, a zero value
* implies disabled
*
* @flags: transmit info flags, defined above
* @band: the band to transmit on (use for checking for races)
- * @antenna_sel_tx: antenna to use, 0 for automatic diversity
+ * @hw_queue: HW queue to put the frame on, skb_get_queue_mapping() gives the AC
* @ack_frame_id: internal frame ID for TX status, used internally
* @control: union for control data
* @status: union for status data
u32 flags;
u8 band;
- u8 antenna_sel_tx;
+ u8 hw_queue;
u16 ack_frame_id;
u8 ampdu_ack_len;
int ack_signal;
u8 ampdu_len;
- /* 15 bytes free */
+ u8 antenna;
+ /* 14 bytes free */
} status;
struct {
struct ieee80211_tx_rate driver_rates[
* these need to be set (or cleared) when the interface is added
* or, if supported by the driver, the interface type is changed
* at runtime, mac80211 will never touch this field
+ * @hw_queue: hardware queue for each AC
+ * @cab_queue: content-after-beacon (DTIM beacon really) queue, AP mode only
* @drv_priv: data area for driver use, will always be aligned to
* sizeof(void *).
*/
struct ieee80211_bss_conf bss_conf;
u8 addr[ETH_ALEN];
bool p2p;
+
+ u8 cab_queue;
+ u8 hw_queue[IEEE80211_NUM_ACS];
+
u32 driver_flags;
+
/* must be last */
u8 drv_priv[0] __attribute__((__aligned__(sizeof(void *))));
};
* @IEEE80211_HW_SCAN_WHILE_IDLE: The device can do hw scan while
* being idle (i.e. mac80211 doesn't have to go idle-off during the
* the scan).
+ *
+ * @IEEE80211_HW_WANT_MONITOR_VIF: The driver would like to be informed of
+ * a virtual monitor interface when monitor interfaces are the only
+ * active interfaces.
+ *
+ * @IEEE80211_HW_QUEUE_CONTROL: The driver wants to control per-interface
+ * queue mapping in order to use different queues (not just one per AC)
+ * for different virtual interfaces. See the doc section on HW queue
+ * control for more details.
*/
enum ieee80211_hw_flags {
IEEE80211_HW_HAS_RATE_CONTROL = 1<<0,
IEEE80211_HW_PS_NULLFUNC_STACK = 1<<11,
IEEE80211_HW_SUPPORTS_DYNAMIC_PS = 1<<12,
IEEE80211_HW_MFP_CAPABLE = 1<<13,
- /* reuse bit 14 */
+ IEEE80211_HW_WANT_MONITOR_VIF = 1<<14,
IEEE80211_HW_SUPPORTS_STATIC_SMPS = 1<<15,
IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS = 1<<16,
IEEE80211_HW_SUPPORTS_UAPSD = 1<<17,
IEEE80211_HW_REPORTS_TX_ACK_STATUS = 1<<18,
IEEE80211_HW_CONNECTION_MONITOR = 1<<19,
- /* reuse bit 20 */
+ IEEE80211_HW_QUEUE_CONTROL = 1<<20,
IEEE80211_HW_SUPPORTS_PER_STA_GTK = 1<<21,
IEEE80211_HW_AP_LINK_PS = 1<<22,
IEEE80211_HW_TX_AMPDU_SETUP_IN_HW = 1<<23,
* @max_tx_aggregation_subframes: maximum number of subframes in an
* aggregate an HT driver will transmit, used by the peer as a
* hint to size its reorder buffer.
+ *
+ * @offchannel_tx_hw_queue: HW queue ID to use for offchannel TX
+ * (if %IEEE80211_HW_QUEUE_CONTROL is set)
*/
struct ieee80211_hw {
struct ieee80211_conf conf;
u8 max_rate_tries;
u8 max_rx_aggregation_subframes;
u8 max_tx_aggregation_subframes;
+ u8 offchannel_tx_hw_queue;
};
/**
ieee80211_get_tx_rate(const struct ieee80211_hw *hw,
const struct ieee80211_tx_info *c)
{
- if (WARN_ON(c->control.rates[0].idx < 0))
+ if (WARN_ON_ONCE(c->control.rates[0].idx < 0))
return NULL;
return &hw->wiphy->bands[c->band]->bitrates[c->control.rates[0].idx];
}
* The driver may also use ieee80211_sta_eosp_irqsafe() in this case.
*/
+/**
+ * DOC: HW queue control
+ *
+ * Before HW queue control was introduced, mac80211 only had a single static
+ * assignment of per-interface AC software queues to hardware queues. This
+ * was problematic for a few reasons:
+ * 1) off-channel transmissions might get stuck behind other frames
+ * 2) multiple virtual interfaces couldn't be handled correctly
+ * 3) after-DTIM frames could get stuck behind other frames
+ *
+ * To solve this, hardware typically uses multiple different queues for all
+ * the different usages, and this needs to be propagated into mac80211 so it
+ * won't have the same problem with the software queues.
+ *
+ * Therefore, mac80211 now offers the %IEEE80211_HW_QUEUE_CONTROL capability
+ * flag that tells it that the driver implements its own queue control. To do
+ * so, the driver will set up the various queues in each &struct ieee80211_vif
+ * and the offchannel queue in &struct ieee80211_hw. In response, mac80211 will
+ * use those queue IDs in the hw_queue field of &struct ieee80211_tx_info and
+ * if necessary will queue the frame on the right software queue that mirrors
+ * the hardware queue.
+ * Additionally, the driver has to then use these HW queue IDs for the queue
+ * management functions (ieee80211_stop_queue() et al.)
+ *
+ * The driver is free to set up the queue mappings as needed, multiple virtual
+ * interfaces may map to the same hardware queues if needed. The setup has to
+ * happen during add_interface or change_interface callbacks. For example, a
+ * driver supporting station+station and station+AP modes might decide to have
+ * 10 hardware queues to handle different scenarios:
+ *
+ * 4 AC HW queues for 1st vif: 0, 1, 2, 3
+ * 4 AC HW queues for 2nd vif: 4, 5, 6, 7
+ * after-DTIM queue for AP: 8
+ * off-channel queue: 9
+ *
+ * It would then set up the hardware like this:
+ * hw.offchannel_tx_hw_queue = 9
+ *
+ * and the first virtual interface that is added as follows:
+ * vif.hw_queue[IEEE80211_AC_VO] = 0
+ * vif.hw_queue[IEEE80211_AC_VI] = 1
+ * vif.hw_queue[IEEE80211_AC_BE] = 2
+ * vif.hw_queue[IEEE80211_AC_BK] = 3
+ * vif.cab_queue = 8 // if AP mode, otherwise %IEEE80211_INVAL_HW_QUEUE
+ * and the second virtual interface with 4-7.
+ *
+ * If queue 6 gets full, for example, mac80211 would only stop the second
+ * virtual interface's BE queue since virtual interface queues are per AC.
+ *
+ * Note that the vif.cab_queue value should be set to %IEEE80211_INVAL_HW_QUEUE
+ * whenever the queue is not used (i.e. the interface is not in AP mode) if the
+ * queue could potentially be shared since mac80211 will look at cab_queue when
+ * a queue is stopped/woken even if the interface is not in AP mode.
+ */
+
/**
* enum ieee80211_filter_flags - hardware filter flags
*
IEEE80211_FRAME_RELEASE_UAPSD,
};
+/**
+ * enum ieee80211_rate_control_changed - flags to indicate what changed
+ *
+ * @IEEE80211_RC_BW_CHANGED: The bandwidth that can be used to transmit
+ * to this station changed.
+ * @IEEE80211_RC_SMPS_CHANGED: The SMPS state of the station changed.
+ */
+enum ieee80211_rate_control_changed {
+ IEEE80211_RC_BW_CHANGED = BIT(0),
+ IEEE80211_RC_SMPS_CHANGED = BIT(1),
+};
+
/**
* struct ieee80211_ops - callbacks from mac80211 to the driver
*
* up the list of states.
* The callback can sleep.
*
+ * @sta_rc_update: Notifies the driver of changes to the bitrates that can be
+ * used to transmit to the station. The changes are advertised with bits
+ * from &enum ieee80211_rate_control_changed and the values are reflected
+ * in the station data. This callback should only be used when the driver
+ * uses hardware rate control (%IEEE80211_HW_HAS_RATE_CONTROL) since
+ * otherwise the rate control algorithm is notified directly.
+ * Must be atomic.
+ *
* @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.
#ifdef CONFIG_PM
int (*suspend)(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan);
int (*resume)(struct ieee80211_hw *hw);
+ void (*set_wakeup)(struct ieee80211_hw *hw, bool enabled);
#endif
int (*add_interface)(struct ieee80211_hw *hw,
struct ieee80211_vif *vif);
struct ieee80211_sta *sta,
enum ieee80211_sta_state old_state,
enum ieee80211_sta_state new_state);
+ void (*sta_rc_update)(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif,
+ struct ieee80211_sta *sta,
+ u32 changed);
int (*conf_tx)(struct ieee80211_hw *hw,
- struct ieee80211_vif *vif, u16 queue,
+ struct ieee80211_vif *vif, u16 ac,
const struct ieee80211_tx_queue_params *params);
u64 (*get_tsf)(struct ieee80211_hw *hw, struct ieee80211_vif *vif);
void (*set_tsf)(struct ieee80211_hw *hw, 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.
- * @IEEE80211_RC_SMPS_CHANGED: The SMPS state of the station changed, the rate
- * control algorithm needs to adjust accordingly.
- */
-enum rate_control_changed {
- IEEE80211_RC_HT_CHANGED = BIT(0),
- IEEE80211_RC_SMPS_CHANGED = BIT(1),
-};
-
/**
* struct ieee80211_tx_rate_control - rate control information for/from RC algo
*
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,
- enum nl80211_channel_type oper_chan_type);
+ struct ieee80211_sta *sta, void *priv_sta,
+ u32 changed);
void (*free_sta)(void *priv, struct ieee80211_sta *sta,
void *priv_sta);
void ieee80211_disable_rssi_reports(struct ieee80211_vif *vif);
-int ieee80211_add_srates_ie(struct ieee80211_vif *vif, struct sk_buff *skb);
+int ieee80211_add_srates_ie(struct ieee80211_vif *vif,
+ struct sk_buff *skb, bool need_basic);
int ieee80211_add_ext_srates_ie(struct ieee80211_vif *vif,
- struct sk_buff *skb);
+ struct sk_buff *skb, bool need_basic);
#endif /* MAC80211_H */
projects / karo-tx-linux.git / blobdiff