drivers/net/wireless/st/cw1200/txrx.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * Datapath interface for ST-Ericsson CW1200 mac80211 drivers
   4  *
   5  * Copyright (c) 2010, ST-Ericsson
   6  * Author: Dmitry Tarnyagin <dmitry.tarnyagin@lockless.no>
   7  */
   8
   9 #ifndef CW1200_TXRX_H
  10 #define CW1200_TXRX_H
  11
  12 #include <linux/list.h>
  13
  14 /* extern */ struct ieee80211_hw;
  15 /* extern */ struct sk_buff;
  16 /* extern */ struct wsm_tx;
  17 /* extern */ struct wsm_rx;
  18 /* extern */ struct wsm_tx_confirm;
  19 /* extern */ struct cw1200_txpriv;
  20
  21 struct tx_policy {
  22         union {
  23                 __le32 tbl[3];
  24                 u8 raw[12];
  25         };
  26         u8  defined;
  27         u8  usage_count;
  28         u8  retry_count;
  29         u8  uploaded;
  30 };
  31
  32 struct tx_policy_cache_entry {
  33         struct tx_policy policy;
  34         struct list_head link;
  35 };
  36
  37 #define TX_POLICY_CACHE_SIZE    (8)
  38 struct tx_policy_cache {
  39         struct tx_policy_cache_entry cache[TX_POLICY_CACHE_SIZE];
  40         struct list_head used;
  41         struct list_head free;
  42         spinlock_t lock; /* Protect policy cache */
  43 };
  44
  45 /* ******************************************************************** */
  46 /* TX policy cache                                                      */
  47 /* Intention of TX policy cache is an overcomplicated WSM API.
  48  * Device does not accept per-PDU tx retry sequence.
  49  * It uses "tx retry policy id" instead, so driver code has to sync
  50  * linux tx retry sequences with a retry policy table in the device.
  51  */
  52 void tx_policy_init(struct cw1200_common *priv);
  53 void tx_policy_upload_work(struct work_struct *work);
  54 void tx_policy_clean(struct cw1200_common *priv);
  55
  56 /* ******************************************************************** */
  57 /* TX implementation                                                    */
  58
  59 u32 cw1200_rate_mask_to_wsm(struct cw1200_common *priv,
  60                                u32 rates);
  61 void cw1200_tx(struct ieee80211_hw *dev,
  62                struct ieee80211_tx_control *control,
  63                struct sk_buff *skb);
  64 void cw1200_skb_dtor(struct cw1200_common *priv,
  65                      struct sk_buff *skb,
  66                      const struct cw1200_txpriv *txpriv);
  67
  68 /* ******************************************************************** */
  69 /* WSM callbacks                                                        */
  70
  71 void cw1200_tx_confirm_cb(struct cw1200_common *priv,
  72                           int link_id,
  73                           struct wsm_tx_confirm *arg);
  74 void cw1200_rx_cb(struct cw1200_common *priv,
  75                   struct wsm_rx *arg,
  76                   int link_id,
  77                   struct sk_buff **skb_p);
  78
  79 /* ******************************************************************** */
  80 /* Timeout                                                              */
  81
  82 void cw1200_tx_timeout(struct work_struct *work);
  83
  84 /* ******************************************************************** */
  85 /* Security                                                             */
  86 int cw1200_alloc_key(struct cw1200_common *priv);
  87 void cw1200_free_key(struct cw1200_common *priv, int idx);
  88 void cw1200_free_keys(struct cw1200_common *priv);
  89 int cw1200_upload_keys(struct cw1200_common *priv);
  90
  91 /* ******************************************************************** */
  92 /* Workaround for WFD test case 6.1.10                                  */
  93 void cw1200_link_id_reset(struct work_struct *work);
  94
  95 #define CW1200_LINK_ID_GC_TIMEOUT ((unsigned long)(10 * HZ))
  96
  97 int cw1200_find_link_id(struct cw1200_common *priv, const u8 *mac);
  98 int cw1200_alloc_link_id(struct cw1200_common *priv, const u8 *mac);
  99 void cw1200_link_id_work(struct work_struct *work);
 100 void cw1200_link_id_gc_work(struct work_struct *work);
 101
 102
 103 #endif /* CW1200_TXRX_H */