LXR linux/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
  21struct 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
  32struct tx_policy_cache_entry {
  33        struct tx_policy policy;
  34        struct list_head link;
  35};
  36
  37#define TX_POLICY_CACHE_SIZE    (8)
  38struct 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 */
  52void tx_policy_init(struct cw1200_common *priv);
  53void tx_policy_upload_work(struct work_struct *work);
  54void tx_policy_clean(struct cw1200_common *priv);
  55
  56/* ******************************************************************** */
  57/* TX implementation                                                    */
  58
  59u32 cw1200_rate_mask_to_wsm(struct cw1200_common *priv,
  60                               u32 rates);
  61void cw1200_tx(struct ieee80211_hw *dev,
  62               struct ieee80211_tx_control *control,
  63               struct sk_buff *skb);
  64void cw1200_skb_dtor(struct cw1200_common *priv,
  65                     struct sk_buff *skb,
  66                     const struct cw1200_txpriv *txpriv);
  67
  68/* ******************************************************************** */
  69/* WSM callbacks                                                        */
  70
  71void cw1200_tx_confirm_cb(struct cw1200_common *priv,
  72                          int link_id,
  73                          struct wsm_tx_confirm *arg);
  74void 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
  82void cw1200_tx_timeout(struct work_struct *work);
  83
  84/* ******************************************************************** */
  85/* Security                                                             */
  86int cw1200_alloc_key(struct cw1200_common *priv);
  87void cw1200_free_key(struct cw1200_common *priv, int idx);
  88void cw1200_free_keys(struct cw1200_common *priv);
  89int cw1200_upload_keys(struct cw1200_common *priv);
  90
  91/* ******************************************************************** */
  92/* Workaround for WFD test case 6.1.10                                  */
  93void cw1200_link_id_reset(struct work_struct *work);
  94
  95#define CW1200_LINK_ID_GC_TIMEOUT ((unsigned long)(10 * HZ))
  96
  97int cw1200_find_link_id(struct cw1200_common *priv, const u8 *mac);
  98int cw1200_alloc_link_id(struct cw1200_common *priv, const u8 *mac);
  99void cw1200_link_id_work(struct work_struct *work);
 100void cw1200_link_id_gc_work(struct work_struct *work);
 101
 102
 103#endif /* CW1200_TXRX_H */
 104