97 	struct ll_struct *ll = hu->priv;  in send_hcill_cmd()  local
115 	skb_queue_tail(&ll->txq, skb);  in send_hcill_cmd()
123 	struct ll_struct *ll;  in ll_open()  local
127 	ll = kzalloc(sizeof(*ll), GFP_KERNEL);  in ll_open()
128 	if (!ll)  in ll_open()
131 	skb_queue_head_init(&ll->txq);  in ll_open()
132 	skb_queue_head_init(&ll->tx_wait_q);  in ll_open()
133 	spin_lock_init(&ll->hcill_lock);  in ll_open()
135 	ll->hcill_state = HCILL_AWAKE;  in ll_open()
137 	hu->priv = ll;  in ll_open()
145 	struct ll_struct *ll = hu->priv;  in ll_flush()  local
149 	skb_queue_purge(&ll->tx_wait_q);  in ll_flush()
150 	skb_queue_purge(&ll->txq);  in ll_flush()
158 	struct ll_struct *ll = hu->priv;  in ll_close()  local
162 	skb_queue_purge(&ll->tx_wait_q);  in ll_close()
163 	skb_queue_purge(&ll->txq);  in ll_close()
165 	kfree_skb(ll->rx_skb);  in ll_close()
169 	kfree(ll);  in ll_close()
181 static void __ll_do_awake(struct ll_struct *ll)  in __ll_do_awake()  argument
185 	while ((skb = skb_dequeue(&ll->tx_wait_q)))  in __ll_do_awake()
186 		skb_queue_tail(&ll->txq, skb);  in __ll_do_awake()
188 	ll->hcill_state = HCILL_AWAKE;  in __ll_do_awake()
197 	struct ll_struct *ll = hu->priv;  in ll_device_want_to_wakeup()  local
202 	spin_lock_irqsave(&ll->hcill_lock, flags);  in ll_device_want_to_wakeup()
204 	switch (ll->hcill_state) {  in ll_device_want_to_wakeup()
227 		BT_ERR("received HCILL_WAKE_UP_IND in state %ld", ll->hcill_state);  in ll_device_want_to_wakeup()
232 	__ll_do_awake(ll);  in ll_device_want_to_wakeup()
235 	spin_unlock_irqrestore(&ll->hcill_lock, flags);  in ll_device_want_to_wakeup()
247 	struct ll_struct *ll = hu->priv;  in ll_device_want_to_sleep()  local
252 	spin_lock_irqsave(&ll->hcill_lock, flags);  in ll_device_want_to_sleep()
255 	if (ll->hcill_state != HCILL_AWAKE)  in ll_device_want_to_sleep()
256 		BT_ERR("ERR: HCILL_GO_TO_SLEEP_IND in state %ld", ll->hcill_state);  in ll_device_want_to_sleep()
265 	ll->hcill_state = HCILL_ASLEEP;  in ll_device_want_to_sleep()
268 	spin_unlock_irqrestore(&ll->hcill_lock, flags);  in ll_device_want_to_sleep()
280 	struct ll_struct *ll = hu->priv;  in ll_device_woke_up()  local
285 	spin_lock_irqsave(&ll->hcill_lock, flags);  in ll_device_woke_up()
288 	if (ll->hcill_state != HCILL_ASLEEP_TO_AWAKE)  in ll_device_woke_up()
289 		BT_ERR("received HCILL_WAKE_UP_ACK in state %ld", ll->hcill_state);  in ll_device_woke_up()
292 	__ll_do_awake(ll);  in ll_device_woke_up()
294 	spin_unlock_irqrestore(&ll->hcill_lock, flags);  in ll_device_woke_up()
305 	struct ll_struct *ll = hu->priv;  in ll_enqueue()  local
313 	spin_lock_irqsave(&ll->hcill_lock, flags);  in ll_enqueue()
316 	switch (ll->hcill_state) {  in ll_enqueue()
319 		skb_queue_tail(&ll->txq, skb);  in ll_enqueue()
324 		skb_queue_tail(&ll->tx_wait_q, skb);  in ll_enqueue()
330 		ll->hcill_state = HCILL_ASLEEP_TO_AWAKE;  in ll_enqueue()
335 		skb_queue_tail(&ll->tx_wait_q, skb);  in ll_enqueue()
338 		BT_ERR("illegal hcill state: %ld (losing packet)", ll->hcill_state);  in ll_enqueue()
343 	spin_unlock_irqrestore(&ll->hcill_lock, flags);  in ll_enqueue()
348 static inline int ll_check_data_len(struct hci_dev *hdev, struct ll_struct *ll, int len)  in ll_check_data_len()  argument
350 	int room = skb_tailroom(ll->rx_skb);  in ll_check_data_len()
355 		hci_recv_frame(hdev, ll->rx_skb);  in ll_check_data_len()
358 		kfree_skb(ll->rx_skb);  in ll_check_data_len()
360 		ll->rx_state = HCILL_W4_DATA;  in ll_check_data_len()
361 		ll->rx_count = len;  in ll_check_data_len()
365 	ll->rx_state = HCILL_W4_PACKET_TYPE;  in ll_check_data_len()
366 	ll->rx_skb   = NULL;  in ll_check_data_len()
367 	ll->rx_count = 0;  in ll_check_data_len()
375 	struct ll_struct *ll = hu->priv;  in ll_recv()  local
382 	BT_DBG("hu %p count %d rx_state %ld rx_count %ld", hu, count, ll->rx_state, ll->rx_count);  in ll_recv()
386 		if (ll->rx_count) {  in ll_recv()
387 			len = min_t(unsigned int, ll->rx_count, count);  in ll_recv()
388 			memcpy(skb_put(ll->rx_skb, len), ptr, len);  in ll_recv()
389 			ll->rx_count -= len; count -= len; ptr += len;  in ll_recv()
391 			if (ll->rx_count)  in ll_recv()
394 			switch (ll->rx_state) {  in ll_recv()
397 				hci_recv_frame(hu->hdev, ll->rx_skb);  in ll_recv()
399 				ll->rx_state = HCILL_W4_PACKET_TYPE;  in ll_recv()
400 				ll->rx_skb = NULL;  in ll_recv()
404 				eh = hci_event_hdr(ll->rx_skb);  in ll_recv()
408 				ll_check_data_len(hu->hdev, ll, eh->plen);  in ll_recv()
412 				ah = hci_acl_hdr(ll->rx_skb);  in ll_recv()
417 				ll_check_data_len(hu->hdev, ll, dlen);  in ll_recv()
421 				sh = hci_sco_hdr(ll->rx_skb);  in ll_recv()
425 				ll_check_data_len(hu->hdev, ll, sh->dlen);  in ll_recv()
434 			ll->rx_state = HCILL_W4_EVENT_HDR;  in ll_recv()
435 			ll->rx_count = HCI_EVENT_HDR_SIZE;  in ll_recv()
441 			ll->rx_state = HCILL_W4_ACL_HDR;  in ll_recv()
442 			ll->rx_count = HCI_ACL_HDR_SIZE;  in ll_recv()
448 			ll->rx_state = HCILL_W4_SCO_HDR;  in ll_recv()
449 			ll->rx_count = HCI_SCO_HDR_SIZE;  in ll_recv()
462 			BT_ERR("received HCILL_GO_TO_SLEEP_ACK (in state %ld)", ll->hcill_state);  in ll_recv()
488 		ll->rx_skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);  in ll_recv()
489 		if (!ll->rx_skb) {  in ll_recv()
491 			ll->rx_state = HCILL_W4_PACKET_TYPE;  in ll_recv()
492 			ll->rx_count = 0;  in ll_recv()
496 		bt_cb(ll->rx_skb)->pkt_type = type;  in ll_recv()
504 	struct ll_struct *ll = hu->priv;  in ll_dequeue()  local
505 	return skb_dequeue(&ll->txq);  in ll_dequeue()