LXR linux/drivers/net/wireless/mwifiex/11n.h

   1/*
   2 * Marvell Wireless LAN device driver: 802.11n
   3 *
   4 * Copyright (C) 2011, Marvell International Ltd.
   5 *
   6 * This software file (the "File") is distributed by Marvell International
   7 * Ltd. under the terms of the GNU General Public License Version 2, June 1991
   8 * (the "License").  You may use, redistribute and/or modify this File in
   9 * accordance with the terms and conditions of the License, a copy of which
  10 * is available by writing to the Free Software Foundation, Inc.,
  11 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
  12 * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
  13 *
  14 * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
  15 * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
  16 * ARE EXPRESSLY DISCLAIMED.  The License provides additional details about
  17 * this warranty disclaimer.
  18 */
  19
  20#ifndef _MWIFIEX_11N_H_
  21#define _MWIFIEX_11N_H_
  22
  23#include "11n_aggr.h"
  24#include "11n_rxreorder.h"
  25#include "wmm.h"
  26
  27int mwifiex_ret_11n_delba(struct mwifiex_private *priv,
  28                          struct host_cmd_ds_command *resp);
  29int mwifiex_ret_11n_addba_req(struct mwifiex_private *priv,
  30                              struct host_cmd_ds_command *resp);
  31int mwifiex_ret_11n_cfg(struct host_cmd_ds_command *resp,
  32                        struct mwifiex_ds_11n_tx_cfg *tx_cfg);
  33int mwifiex_cmd_11n_cfg(struct host_cmd_ds_command *cmd, u16 cmd_action,
  34                        struct mwifiex_ds_11n_tx_cfg *txcfg);
  35
  36int mwifiex_cmd_append_11n_tlv(struct mwifiex_private *priv,
  37                               struct mwifiex_bssdescriptor *bss_desc,
  38                               u8 **buffer);
  39void mwifiex_cfg_tx_buf(struct mwifiex_private *priv,
  40                        struct mwifiex_bssdescriptor *bss_desc);
  41void mwifiex_fill_cap_info(struct mwifiex_private *, u8 radio_type,
  42                           struct mwifiex_ie_types_htcap *);
  43int mwifiex_set_get_11n_htcap_cfg(struct mwifiex_private *priv,
  44                                  u16 action, int *htcap_cfg);
  45void mwifiex_11n_delete_tx_ba_stream_tbl_entry(struct mwifiex_private *priv,
  46                                             struct mwifiex_tx_ba_stream_tbl
  47                                             *tx_tbl);
  48void mwifiex_11n_delete_all_tx_ba_stream_tbl(struct mwifiex_private *priv);
  49struct mwifiex_tx_ba_stream_tbl *mwifiex_get_ba_tbl(struct
  50                                                             mwifiex_private
  51                                                             *priv, int tid,
  52                                                             u8 *ra);
  53void mwifiex_create_ba_tbl(struct mwifiex_private *priv, u8 *ra, int tid,
  54                           enum mwifiex_ba_status ba_status);
  55int mwifiex_send_addba(struct mwifiex_private *priv, int tid, u8 *peer_mac);
  56int mwifiex_send_delba(struct mwifiex_private *priv, int tid, u8 *peer_mac,
  57                       int initiator);
  58void mwifiex_11n_delete_ba_stream(struct mwifiex_private *priv, u8 *del_ba);
  59int mwifiex_get_rx_reorder_tbl(struct mwifiex_private *priv,
  60                              struct mwifiex_ds_rx_reorder_tbl *buf);
  61int mwifiex_get_tx_ba_stream_tbl(struct mwifiex_private *priv,
  62                               struct mwifiex_ds_tx_ba_stream_tbl *buf);
  63int mwifiex_ret_amsdu_aggr_ctrl(struct host_cmd_ds_command *resp,
  64                                struct mwifiex_ds_11n_amsdu_aggr_ctrl
  65                                *amsdu_aggr_ctrl);
  66int mwifiex_cmd_recfg_tx_buf(struct mwifiex_private *priv,
  67                             struct host_cmd_ds_command *cmd,
  68                             int cmd_action, u16 *buf_size);
  69int mwifiex_cmd_amsdu_aggr_ctrl(struct host_cmd_ds_command *cmd,
  70                                int cmd_action,
  71                                struct mwifiex_ds_11n_amsdu_aggr_ctrl *aa_ctrl);
  72
  73/*
  74 * This function checks whether AMPDU is allowed or not for a particular TID.
  75 */
  76static inline u8
  77mwifiex_is_ampdu_allowed(struct mwifiex_private *priv, int tid)
  78{
  79        return ((priv->aggr_prio_tbl[tid].ampdu_ap != BA_STREAM_NOT_ALLOWED)
  80                ? true : false);
  81}
  82
  83/*
  84 * This function checks whether AMSDU is allowed or not for a particular TID.
  85 */
  86static inline u8
  87mwifiex_is_amsdu_allowed(struct mwifiex_private *priv, int tid)
  88{
  89        return (((priv->aggr_prio_tbl[tid].amsdu != BA_STREAM_NOT_ALLOWED) &&
  90                 (priv->is_data_rate_auto || !(priv->bitmap_rates[2] & 0x03)))
  91                ? true : false);
  92}
  93
  94/*
  95 * This function checks whether a space is available for new BA stream or not.
  96 */
  97static inline u8 mwifiex_space_avail_for_new_ba_stream(
  98                                        struct mwifiex_adapter *adapter)
  99{
 100        struct mwifiex_private *priv;
 101        u8 i;
 102        u32 ba_stream_num = 0;
 103
 104        for (i = 0; i < adapter->priv_num; i++) {
 105                priv = adapter->priv[i];
 106                if (priv)
 107                        ba_stream_num += mwifiex_wmm_list_len(
 108                                &priv->tx_ba_stream_tbl_ptr);
 109        }
 110
 111        return ((ba_stream_num <
 112                 MWIFIEX_MAX_TX_BASTREAM_SUPPORTED) ? true : false);
 113}
 114
 115/*
 116 * This function finds the correct Tx BA stream to delete.
 117 *
 118 * Upon successfully locating, both the TID and the RA are returned.
 119 */
 120static inline u8
 121mwifiex_find_stream_to_delete(struct mwifiex_private *priv, int ptr_tid,
 122                              int *ptid, u8 *ra)
 123{
 124        int tid;
 125        u8 ret = false;
 126        struct mwifiex_tx_ba_stream_tbl *tx_tbl;
 127        unsigned long flags;
 128
 129        tid = priv->aggr_prio_tbl[ptr_tid].ampdu_user;
 130
 131        spin_lock_irqsave(&priv->tx_ba_stream_tbl_lock, flags);
 132        list_for_each_entry(tx_tbl, &priv->tx_ba_stream_tbl_ptr, list) {
 133                if (tid > priv->aggr_prio_tbl[tx_tbl->tid].ampdu_user) {
 134                        tid = priv->aggr_prio_tbl[tx_tbl->tid].ampdu_user;
 135                        *ptid = tx_tbl->tid;
 136                        memcpy(ra, tx_tbl->ra, ETH_ALEN);
 137                        ret = true;
 138                }
 139        }
 140        spin_unlock_irqrestore(&priv->tx_ba_stream_tbl_lock, flags);
 141
 142        return ret;
 143}
 144
 145/*
 146 * This function checks whether BA stream is set up or not.
 147 */
 148static inline int
 149mwifiex_is_ba_stream_setup(struct mwifiex_private *priv,
 150                           struct mwifiex_ra_list_tbl *ptr, int tid)
 151{
 152        struct mwifiex_tx_ba_stream_tbl *tx_tbl;
 153
 154        tx_tbl = mwifiex_get_ba_tbl(priv, tid, ptr->ra);
 155        if (tx_tbl && IS_BASTREAM_SETUP(tx_tbl))
 156                return true;
 157
 158        return false;
 159}
 160#endif /* !_MWIFIEX_11N_H_ */
 161