drivers/staging/wfx/queue.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * O(1) TX queue with built-in allocator.
   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         atomic_t                pending_frames;
  21         int                     priority;
  22 };
  23
  24 void wfx_tx_lock(struct wfx_dev *wdev);
  25 void wfx_tx_unlock(struct wfx_dev *wdev);
  26 void wfx_tx_flush(struct wfx_dev *wdev);
  27 void wfx_tx_lock_flush(struct wfx_dev *wdev);
  28
  29 void wfx_tx_queues_init(struct wfx_vif *wvif);
  30 void wfx_tx_queues_check_empty(struct wfx_vif *wvif);
  31 bool wfx_tx_queues_has_cab(struct wfx_vif *wvif);
  32 void wfx_tx_queues_put(struct wfx_vif *wvif, struct sk_buff *skb);
  33 struct hif_msg *wfx_tx_queues_get(struct wfx_dev *wdev);
  34
  35 bool wfx_tx_queue_empty(struct wfx_vif *wvif, struct wfx_queue *queue);
  36 void wfx_tx_queue_drop(struct wfx_vif *wvif, struct wfx_queue *queue,
  37                        struct sk_buff_head *dropped);
  38
  39 struct sk_buff *wfx_pending_get(struct wfx_dev *wdev, u32 packet_id);
  40 void wfx_pending_drop(struct wfx_dev *wdev, struct sk_buff_head *dropped);
  41 unsigned int wfx_pending_get_pkt_us_delay(struct wfx_dev *wdev,
  42                                           struct sk_buff *skb);
  43 void wfx_pending_dump_old_frames(struct wfx_dev *wdev, unsigned int limit_ms);
  44
  45 #endif /* WFX_QUEUE_H */