LXR linux/drivers/net/wireless/cw1200/txrx.h

   1/*
   2 * Datapath interface for ST-Ericsson CW1200 mac80211 drivers
   3 *
   4 * Copyright (c) 2010, ST-Ericsson
   5 * Author: Dmitry Tarnyagin <dmitry.tarnyagin@lockless.no>
   6 *
   7 * This program is free software; you can redistribute it and/or modify
   8 * it under the terms of the GNU General Public License version 2 as
   9 * published by the Free Software Foundation.
  10 */
  11
  12#ifndef CW1200_TXRX_H
  13#define CW1200_TXRX_H
  14
  15#include <linux/list.h>
  16
  17/* extern */ struct ieee80211_hw;
  18/* extern */ struct sk_buff;
  19/* extern */ struct wsm_tx;
  20/* extern */ struct wsm_rx;
  21/* extern */ struct wsm_tx_confirm;
  22/* extern */ struct cw1200_txpriv;
  23
  24struct tx_policy {
  25        union {
  26                __le32 tbl[3];
  27                u8 raw[12];
  28        };
  29        u8  defined;
  30        u8  usage_count;
  31        u8  retry_count;
  32        u8  uploaded;
  33};
  34
  35struct tx_policy_cache_entry {
  36        struct tx_policy policy;
  37        struct list_head link;
  38};
  39
  40#define TX_POLICY_CACHE_SIZE    (8)
  41struct tx_policy_cache {
  42        struct tx_policy_cache_entry cache[TX_POLICY_CACHE_SIZE];
  43        struct list_head used;
  44        struct list_head free;
  45        spinlock_t lock; /* Protect policy cache */
  46};
  47
  48/* ******************************************************************** */
  49/* TX policy cache                                                      */
  50/* Intention of TX policy cache is an overcomplicated WSM API.
  51 * Device does not accept per-PDU tx retry sequence.
  52 * It uses "tx retry policy id" instead, so driver code has to sync
  53 * linux tx retry sequences with a retry policy table in the device.
  54 */
  55void tx_policy_init(struct cw1200_common *priv);
  56void tx_policy_upload_work(struct work_struct *work);
  57void tx_policy_clean(struct cw1200_common *priv);
  58
  59/* ******************************************************************** */
  60/* TX implementation                                                    */
  61
  62u32 cw1200_rate_mask_to_wsm(struct cw1200_common *priv,
  63                               u32 rates);
  64void cw1200_tx(struct ieee80211_hw *dev,
  65               struct ieee80211_tx_control *control,
  66               struct sk_buff *skb);
  67void cw1200_skb_dtor(struct cw1200_common *priv,
  68                     struct sk_buff *skb,
  69                     const struct cw1200_txpriv *txpriv);
  70
  71/* ******************************************************************** */
  72/* WSM callbacks                                                        */
  73
  74void cw1200_tx_confirm_cb(struct cw1200_common *priv,
  75                          int link_id,
  76                          struct wsm_tx_confirm *arg);
  77void cw1200_rx_cb(struct cw1200_common *priv,
  78                  struct wsm_rx *arg,
  79                  int link_id,
  80                  struct sk_buff **skb_p);
  81
  82/* ******************************************************************** */
  83/* Timeout                                                              */
  84
  85void cw1200_tx_timeout(struct work_struct *work);
  86
  87/* ******************************************************************** */
  88/* Security                                                             */
  89int cw1200_alloc_key(struct cw1200_common *priv);
  90void cw1200_free_key(struct cw1200_common *priv, int idx);
  91void cw1200_free_keys(struct cw1200_common *priv);
  92int cw1200_upload_keys(struct cw1200_common *priv);
  93
  94/* ******************************************************************** */
  95/* Workaround for WFD test case 6.1.10                                  */
  96void cw1200_link_id_reset(struct work_struct *work);
  97
  98#define CW1200_LINK_ID_GC_TIMEOUT ((unsigned long)(10 * HZ))
  99
 100int cw1200_find_link_id(struct cw1200_common *priv, const u8 *mac);
 101int cw1200_alloc_link_id(struct cw1200_common *priv, const u8 *mac);
 102void cw1200_link_id_work(struct work_struct *work);
 103void cw1200_link_id_gc_work(struct work_struct *work);
 104
 105
 106#endif /* CW1200_TXRX_H */
 107