1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * Queue between the tx operation and the bh workqueue. 4 * 5 * Copyright (c) 2017-2020, Silicon Laboratories, Inc. 6 * Copyright (c) 2010, ST-Ericsson 7 */ 8 #ifndef WFX_QUEUE_H 9 #define WFX_QUEUE_H 10 11 #include <linux/skbuff.h> 12 #include <linux/atomic.h> 13 14 struct wfx_dev; 15 struct wfx_vif; 16 17 struct wfx_queue { 18 struct sk_buff_head normal; 19 struct sk_buff_head cab; /* Content After (DTIM) Beacon */ 20 struct sk_buff_head offchan; 21 atomic_t pending_frames; 22 int priority; 23 }; 24 25 void wfx_tx_lock(struct wfx_dev *wdev); 26 void wfx_tx_unlock(struct wfx_dev *wdev); 27 void wfx_tx_flush(struct wfx_dev *wdev); 28 void wfx_tx_lock_flush(struct wfx_dev *wdev); 29 30 void wfx_tx_queues_init(struct wfx_vif *wvif); 31 void wfx_tx_queues_check_empty(struct wfx_vif *wvif); 32 bool wfx_tx_queues_has_cab(struct wfx_vif *wvif); 33 void wfx_tx_queues_put(struct wfx_vif *wvif, struct sk_buff *skb); 34 struct wfx_hif_msg *wfx_tx_queues_get(struct wfx_dev *wdev); 35 36 bool wfx_tx_queue_empty(struct wfx_vif *wvif, struct wfx_queue *queue); 37 void wfx_tx_queue_drop(struct wfx_vif *wvif, struct wfx_queue *queue, 38 struct sk_buff_head *dropped); 39 40 struct sk_buff *wfx_pending_get(struct wfx_dev *wdev, u32 packet_id); 41 void wfx_pending_drop(struct wfx_dev *wdev, struct sk_buff_head *dropped); 42 unsigned int wfx_pending_get_pkt_us_delay(struct wfx_dev *wdev, struct sk_buff *skb); 43 void wfx_pending_dump_old_frames(struct wfx_dev *wdev, unsigned int limit_ms); 44 45 #endif 46