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-rw-r--r--include/linux/uwb.h123
1 files changed, 94 insertions, 29 deletions
diff --git a/include/linux/uwb.h b/include/linux/uwb.h
index f9ccbd9a2ce..c02128991ff 100644
--- a/include/linux/uwb.h
+++ b/include/linux/uwb.h
@@ -30,6 +30,7 @@
#include <linux/device.h>
#include <linux/mutex.h>
#include <linux/timer.h>
+#include <linux/wait.h>
#include <linux/workqueue.h>
#include <linux/uwb/spec.h>
@@ -66,6 +67,7 @@ struct uwb_dev {
struct uwb_dev_addr dev_addr;
int beacon_slot;
DECLARE_BITMAP(streams, UWB_NUM_STREAMS);
+ DECLARE_BITMAP(last_availability_bm, UWB_NUM_MAS);
};
#define to_uwb_dev(d) container_of(d, struct uwb_dev, dev)
@@ -86,12 +88,31 @@ struct uwb_notifs_chain {
struct mutex mutex;
};
+/* Beacon cache list */
+struct uwb_beca {
+ struct list_head list;
+ size_t entries;
+ struct mutex mutex;
+};
+
+/* Event handling thread. */
+struct uwbd {
+ int pid;
+ struct task_struct *task;
+ wait_queue_head_t wq;
+ struct list_head event_list;
+ spinlock_t event_list_lock;
+};
+
/**
* struct uwb_mas_bm - a bitmap of all MAS in a superframe
* @bm: a bitmap of length #UWB_NUM_MAS
*/
struct uwb_mas_bm {
DECLARE_BITMAP(bm, UWB_NUM_MAS);
+ DECLARE_BITMAP(unsafe_bm, UWB_NUM_MAS);
+ int safe;
+ int unsafe;
};
/**
@@ -117,14 +138,24 @@ struct uwb_mas_bm {
* FIXME: further target states TBD.
*/
enum uwb_rsv_state {
- UWB_RSV_STATE_NONE,
+ UWB_RSV_STATE_NONE = 0,
UWB_RSV_STATE_O_INITIATED,
UWB_RSV_STATE_O_PENDING,
UWB_RSV_STATE_O_MODIFIED,
UWB_RSV_STATE_O_ESTABLISHED,
+ UWB_RSV_STATE_O_TO_BE_MOVED,
+ UWB_RSV_STATE_O_MOVE_EXPANDING,
+ UWB_RSV_STATE_O_MOVE_COMBINING,
+ UWB_RSV_STATE_O_MOVE_REDUCING,
UWB_RSV_STATE_T_ACCEPTED,
UWB_RSV_STATE_T_DENIED,
+ UWB_RSV_STATE_T_CONFLICT,
UWB_RSV_STATE_T_PENDING,
+ UWB_RSV_STATE_T_EXPANDING_ACCEPTED,
+ UWB_RSV_STATE_T_EXPANDING_CONFLICT,
+ UWB_RSV_STATE_T_EXPANDING_PENDING,
+ UWB_RSV_STATE_T_EXPANDING_DENIED,
+ UWB_RSV_STATE_T_RESIZED,
UWB_RSV_STATE_LAST,
};
@@ -149,6 +180,12 @@ struct uwb_rsv_target {
};
};
+struct uwb_rsv_move {
+ struct uwb_mas_bm final_mas;
+ struct uwb_ie_drp *companion_drp_ie;
+ struct uwb_mas_bm companion_mas;
+};
+
/*
* Number of streams reserved for reservations targeted at DevAddrs.
*/
@@ -186,6 +223,7 @@ typedef void (*uwb_rsv_cb_f)(struct uwb_rsv *rsv);
*
* @status: negotiation status
* @stream: stream index allocated for this reservation
+ * @tiebreaker: conflict tiebreaker for this reservation
* @mas: reserved MAS
* @drp_ie: the DRP IE
* @ie_valid: true iff the DRP IE matches the reservation parameters
@@ -201,25 +239,29 @@ struct uwb_rsv {
struct uwb_rc *rc;
struct list_head rc_node;
struct list_head pal_node;
+ struct kref kref;
struct uwb_dev *owner;
struct uwb_rsv_target target;
enum uwb_drp_type type;
int max_mas;
int min_mas;
- int sparsity;
+ int max_interval;
bool is_multicast;
uwb_rsv_cb_f callback;
void *pal_priv;
enum uwb_rsv_state state;
+ bool needs_release_companion_mas;
u8 stream;
+ u8 tiebreaker;
struct uwb_mas_bm mas;
struct uwb_ie_drp *drp_ie;
+ struct uwb_rsv_move mv;
bool ie_valid;
struct timer_list timer;
- bool expired;
+ struct work_struct handle_timeout_work;
};
static const
@@ -261,6 +303,13 @@ struct uwb_drp_avail {
bool ie_valid;
};
+struct uwb_drp_backoff_win {
+ u8 window;
+ u8 n;
+ int total_expired;
+ struct timer_list timer;
+ bool can_reserve_extra_mases;
+};
const char *uwb_rsv_state_str(enum uwb_rsv_state state);
const char *uwb_rsv_type_str(enum uwb_drp_type type);
@@ -276,6 +325,8 @@ void uwb_rsv_terminate(struct uwb_rsv *rsv);
void uwb_rsv_accept(struct uwb_rsv *rsv, uwb_rsv_cb_f cb, void *pal_priv);
+void uwb_rsv_get_usable_mas(struct uwb_rsv *orig_rsv, struct uwb_mas_bm *mas);
+
/**
* Radio Control Interface instance
*
@@ -337,23 +388,33 @@ struct uwb_rc {
u8 ctx_roll;
int beaconing; /* Beaconing state [channel number] */
+ int beaconing_forced;
int scanning;
enum uwb_scan_type scan_type:3;
unsigned ready:1;
struct uwb_notifs_chain notifs_chain;
+ struct uwb_beca uwb_beca;
+
+ struct uwbd uwbd;
+ struct uwb_drp_backoff_win bow;
struct uwb_drp_avail drp_avail;
struct list_head reservations;
+ struct list_head cnflt_alien_list;
+ struct uwb_mas_bm cnflt_alien_bitmap;
struct mutex rsvs_mutex;
+ spinlock_t rsvs_lock;
struct workqueue_struct *rsv_workq;
- struct work_struct rsv_update_work;
+ struct delayed_work rsv_update_work;
+ struct delayed_work rsv_alien_bp_work;
+ int set_drp_ie_pending;
struct mutex ies_mutex;
struct uwb_rc_cmd_set_ie *ies;
size_t ies_capacity;
- spinlock_t pal_lock;
struct list_head pals;
+ int active_pals;
struct uwb_dbg *dbg;
};
@@ -361,11 +422,19 @@ struct uwb_rc {
/**
* struct uwb_pal - a UWB PAL
- * @name: descriptive name for this PAL (wushc, wlp, etc.).
+ * @name: descriptive name for this PAL (wusbhc, wlp, etc.).
* @device: a device for the PAL. Used to link the PAL and the radio
* controller in sysfs.
+ * @rc: the radio controller the PAL uses.
+ * @channel_changed: called when the channel used by the radio changes.
+ * A channel of -1 means the channel has been stopped.
* @new_rsv: called when a peer requests a reservation (may be NULL if
* the PAL cannot accept reservation requests).
+ * @channel: channel being used by the PAL; 0 if the PAL isn't using
+ * the radio; -1 if the PAL wishes to use the radio but
+ * cannot.
+ * @debugfs_dir: a debugfs directory which the PAL can use for its own
+ * debugfs files.
*
* A Protocol Adaptation Layer (PAL) is a user of the WiMedia UWB
* radio platform (e.g., WUSB, WLP or Bluetooth UWB AMP).
@@ -384,12 +453,21 @@ struct uwb_pal {
struct list_head node;
const char *name;
struct device *device;
- void (*new_rsv)(struct uwb_rsv *rsv);
+ struct uwb_rc *rc;
+
+ void (*channel_changed)(struct uwb_pal *pal, int channel);
+ void (*new_rsv)(struct uwb_pal *pal, struct uwb_rsv *rsv);
+
+ int channel;
+ struct dentry *debugfs_dir;
};
void uwb_pal_init(struct uwb_pal *pal);
-int uwb_pal_register(struct uwb_rc *rc, struct uwb_pal *pal);
-void uwb_pal_unregister(struct uwb_rc *rc, struct uwb_pal *pal);
+int uwb_pal_register(struct uwb_pal *pal);
+void uwb_pal_unregister(struct uwb_pal *pal);
+
+int uwb_radio_start(struct uwb_pal *pal);
+void uwb_radio_stop(struct uwb_pal *pal);
/*
* General public API
@@ -443,8 +521,6 @@ ssize_t uwb_rc_vcmd(struct uwb_rc *rc, const char *cmd_name,
struct uwb_rccb *cmd, size_t cmd_size,
u8 expected_type, u16 expected_event,
struct uwb_rceb **preply);
-ssize_t uwb_rc_get_ie(struct uwb_rc *, struct uwb_rc_evt_get_ie **);
-int uwb_bg_joined(struct uwb_rc *rc);
size_t __uwb_addr_print(char *, size_t, const unsigned char *, int);
@@ -520,6 +596,8 @@ void uwb_rc_rm(struct uwb_rc *);
void uwb_rc_neh_grok(struct uwb_rc *, void *, size_t);
void uwb_rc_neh_error(struct uwb_rc *, int);
void uwb_rc_reset_all(struct uwb_rc *rc);
+void uwb_rc_pre_reset(struct uwb_rc *rc);
+void uwb_rc_post_reset(struct uwb_rc *rc);
/**
* uwb_rsv_is_owner - is the owner of this reservation the RC?
@@ -531,7 +609,9 @@ static inline bool uwb_rsv_is_owner(struct uwb_rsv *rsv)
}
/**
- * Events generated by UWB that can be passed to any listeners
+ * enum uwb_notifs - UWB events that can be passed to any listeners
+ * @UWB_NOTIF_ONAIR: a new neighbour has joined the beacon group.
+ * @UWB_NOTIF_OFFAIR: a neighbour has left the beacon group.
*
* Higher layers can register callback functions with the radio
* controller using uwb_notifs_register(). The radio controller
@@ -539,8 +619,6 @@ static inline bool uwb_rsv_is_owner(struct uwb_rsv *rsv)
* nodes when an event occurs.
*/
enum uwb_notifs {
- UWB_NOTIF_BG_JOIN = 0, /* radio controller joined a beacon group */
- UWB_NOTIF_BG_LEAVE = 1, /* radio controller left a beacon group */
UWB_NOTIF_ONAIR,
UWB_NOTIF_OFFAIR,
};
@@ -652,22 +730,9 @@ static inline int edc_inc(struct edc *err_hist, u16 max_err, u16 timeframe)
/* Information Element handling */
-/* For representing the state of writing to a buffer when iterating */
-struct uwb_buf_ctx {
- char *buf;
- size_t bytes, size;
-};
-
-typedef int (*uwb_ie_f)(struct uwb_dev *, const struct uwb_ie_hdr *,
- size_t, void *);
struct uwb_ie_hdr *uwb_ie_next(void **ptr, size_t *len);
-ssize_t uwb_ie_for_each(struct uwb_dev *uwb_dev, uwb_ie_f fn, void *data,
- const void *buf, size_t size);
-int uwb_ie_dump_hex(struct uwb_dev *, const struct uwb_ie_hdr *,
- size_t, void *);
-int uwb_rc_set_ie(struct uwb_rc *, struct uwb_rc_cmd_set_ie *);
-struct uwb_ie_hdr *uwb_ie_next(void **ptr, size_t *len);
-
+int uwb_rc_ie_add(struct uwb_rc *uwb_rc, const struct uwb_ie_hdr *ies, size_t size);
+int uwb_rc_ie_rm(struct uwb_rc *uwb_rc, enum uwb_ie element_id);
/*
* Transmission statistics
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-17 00:51:02 +0000