txrx.h
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/*
* Datapath interface for ST-Ericsson CW1200 mac80211 drivers
*
* Copyright (c) 2010, ST-Ericsson
* Author: Dmitry Tarnyagin <dmitry.tarnyagin@lockless.no>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef CW1200_TXRX_H
#define CW1200_TXRX_H
#include <linux/list.h>
/* extern */ struct ieee80211_hw;
/* extern */ struct sk_buff;
/* extern */ struct wsm_tx;
/* extern */ struct wsm_rx;
/* extern */ struct wsm_tx_confirm;
/* extern */ struct cw1200_txpriv;
struct tx_policy {
union {
__le32 tbl[3];
u8 raw[12];
};
u8 defined;
u8 usage_count;
u8 retry_count;
u8 uploaded;
};
struct tx_policy_cache_entry {
struct tx_policy policy;
struct list_head link;
};
#define TX_POLICY_CACHE_SIZE (8)
struct tx_policy_cache {
struct tx_policy_cache_entry cache[TX_POLICY_CACHE_SIZE];
struct list_head used;
struct list_head free;
spinlock_t lock; /* Protect policy cache */
};
/* ******************************************************************** */
/* TX policy cache */
/* Intention of TX policy cache is an overcomplicated WSM API.
* Device does not accept per-PDU tx retry sequence.
* It uses "tx retry policy id" instead, so driver code has to sync
* linux tx retry sequences with a retry policy table in the device.
*/
void tx_policy_init(struct cw1200_common *priv);
void tx_policy_upload_work(struct work_struct *work);
void tx_policy_clean(struct cw1200_common *priv);
/* ******************************************************************** */
/* TX implementation */
u32 cw1200_rate_mask_to_wsm(struct cw1200_common *priv,
u32 rates);
void cw1200_tx(struct ieee80211_hw *dev,
struct ieee80211_tx_control *control,
struct sk_buff *skb);
void cw1200_skb_dtor(struct cw1200_common *priv,
struct sk_buff *skb,
const struct cw1200_txpriv *txpriv);
/* ******************************************************************** */
/* WSM callbacks */
void cw1200_tx_confirm_cb(struct cw1200_common *priv,
int link_id,
struct wsm_tx_confirm *arg);
void cw1200_rx_cb(struct cw1200_common *priv,
struct wsm_rx *arg,
int link_id,
struct sk_buff **skb_p);
/* ******************************************************************** */
/* Timeout */
void cw1200_tx_timeout(struct work_struct *work);
/* ******************************************************************** */
/* Security */
int cw1200_alloc_key(struct cw1200_common *priv);
void cw1200_free_key(struct cw1200_common *priv, int idx);
void cw1200_free_keys(struct cw1200_common *priv);
int cw1200_upload_keys(struct cw1200_common *priv);
/* ******************************************************************** */
/* Workaround for WFD test case 6.1.10 */
void cw1200_link_id_reset(struct work_struct *work);
#define CW1200_LINK_ID_GC_TIMEOUT ((unsigned long)(10 * HZ))
int cw1200_find_link_id(struct cw1200_common *priv, const u8 *mac);
int cw1200_alloc_link_id(struct cw1200_common *priv, const u8 *mac);
void cw1200_link_id_work(struct work_struct *work);
void cw1200_link_id_gc_work(struct work_struct *work);
#endif /* CW1200_TXRX_H */