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) 2017-2018, 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
  13 #include "hif_api_cmd.h"
  14
  15 #define WFX_MAX_STA_IN_AP_MODE    14
  16 #define WFX_LINK_ID_NO_ASSOC      15
  17 #define WFX_LINK_ID_AFTER_DTIM    (WFX_LINK_ID_NO_ASSOC + 1)
  18 #define WFX_LINK_ID_UAPSD         (WFX_LINK_ID_NO_ASSOC + 2)
  19 #define WFX_LINK_ID_MAX           (WFX_LINK_ID_NO_ASSOC + 3)
  20
  21 struct wfx_dev;
  22 struct wfx_vif;
  23
  24 struct wfx_queue {
  25         struct sk_buff_head     queue;
  26         int                     tx_locked_cnt;
  27         int                     link_map_cache[WFX_LINK_ID_MAX];
  28         u8                      queue_id;
  29 };
  30
  31 struct wfx_queue_stats {
  32         int                     link_map_cache[WFX_LINK_ID_MAX];
  33         struct sk_buff_head     pending;
  34         wait_queue_head_t       wait_link_id_empty;
  35 };
  36
  37 void wfx_tx_lock(struct wfx_dev *wdev);
  38 void wfx_tx_unlock(struct wfx_dev *wdev);
  39 void wfx_tx_flush(struct wfx_dev *wdev);
  40 void wfx_tx_lock_flush(struct wfx_dev *wdev);
  41
  42 void wfx_tx_queues_init(struct wfx_dev *wdev);
  43 void wfx_tx_queues_deinit(struct wfx_dev *wdev);
  44 void wfx_tx_queues_lock(struct wfx_dev *wdev);
  45 void wfx_tx_queues_unlock(struct wfx_dev *wdev);
  46 void wfx_tx_queues_clear(struct wfx_dev *wdev);
  47 bool wfx_tx_queues_is_empty(struct wfx_dev *wdev);
  48 void wfx_tx_queues_wait_empty_vif(struct wfx_vif *wvif);
  49 struct hif_msg *wfx_tx_queues_get(struct wfx_dev *wdev);
  50 struct hif_msg *wfx_tx_queues_get_after_dtim(struct wfx_vif *wvif);
  51
  52 void wfx_tx_queue_put(struct wfx_dev *wdev, struct wfx_queue *queue,
  53                       struct sk_buff *skb);
  54 int wfx_tx_queue_get_num_queued(struct wfx_queue *queue, u32 link_id_map);
  55
  56 struct sk_buff *wfx_pending_get(struct wfx_dev *wdev, u32 packet_id);
  57 int wfx_pending_remove(struct wfx_dev *wdev, struct sk_buff *skb);
  58 int wfx_pending_requeue(struct wfx_dev *wdev, struct sk_buff *skb);
  59 unsigned int wfx_pending_get_pkt_us_delay(struct wfx_dev *wdev,
  60                                           struct sk_buff *skb);
  61 void wfx_pending_dump_old_frames(struct wfx_dev *wdev, unsigned int limit_ms);
  62
  63 #endif /* WFX_QUEUE_H */