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
  27 int mwifiex_ret_11n_delba(struct mwifiex_private *priv,
  28                           struct host_cmd_ds_command *resp);
  29 int mwifiex_ret_11n_addba_req(struct mwifiex_private *priv,
  30                               struct host_cmd_ds_command *resp);
  31 int mwifiex_ret_11n_cfg(struct host_cmd_ds_command *resp,
  32                         struct mwifiex_ds_11n_tx_cfg *tx_cfg);
  33 int mwifiex_cmd_11n_cfg(struct host_cmd_ds_command *cmd, u16 cmd_action,
  34                         struct mwifiex_ds_11n_tx_cfg *txcfg);
  35
  36 int mwifiex_cmd_append_11n_tlv(struct mwifiex_private *priv,
  37                                struct mwifiex_bssdescriptor *bss_desc,
  38                                u8 **buffer);
  39 void mwifiex_cfg_tx_buf(struct mwifiex_private *priv,
  40                         struct mwifiex_bssdescriptor *bss_desc);
  41 void mwifiex_fill_cap_info(struct mwifiex_private *, u8 radio_type,
  42                            struct mwifiex_ie_types_htcap *);
  43 int mwifiex_set_get_11n_htcap_cfg(struct mwifiex_private *priv,
  44                                   u16 action, int *htcap_cfg);
  45 void mwifiex_11n_delete_tx_ba_stream_tbl_entry(struct mwifiex_private *priv,
  46                                              struct mwifiex_tx_ba_stream_tbl
  47                                              *tx_tbl);
  48 void mwifiex_11n_delete_all_tx_ba_stream_tbl(struct mwifiex_private *priv);
  49 struct mwifiex_tx_ba_stream_tbl *mwifiex_11n_get_tx_ba_stream_tbl(struct
  50                                                              mwifiex_private
  51                                                              *priv, int tid,
  52                                                              u8 *ra);
  53 void mwifiex_11n_create_tx_ba_stream_tbl(struct mwifiex_private *priv, u8 *ra,
  54                                        int tid,
  55                                        enum mwifiex_ba_status ba_status);
  56 int mwifiex_send_addba(struct mwifiex_private *priv, int tid, u8 *peer_mac);
  57 int mwifiex_send_delba(struct mwifiex_private *priv, int tid, u8 *peer_mac,
  58                        int initiator);
  59 void mwifiex_11n_delete_ba_stream(struct mwifiex_private *priv, u8 *del_ba);
  60 int mwifiex_get_rx_reorder_tbl(struct mwifiex_private *priv,
  61                               struct mwifiex_ds_rx_reorder_tbl *buf);
  62 int mwifiex_get_tx_ba_stream_tbl(struct mwifiex_private *priv,
  63                                struct mwifiex_ds_tx_ba_stream_tbl *buf);
  64 int mwifiex_ret_amsdu_aggr_ctrl(struct host_cmd_ds_command *resp,
  65                                 struct mwifiex_ds_11n_amsdu_aggr_ctrl
  66                                 *amsdu_aggr_ctrl);
  67 int mwifiex_cmd_recfg_tx_buf(struct mwifiex_private *priv,
  68                              struct host_cmd_ds_command *cmd,
  69                              int cmd_action, u16 *buf_size);
  70 int mwifiex_cmd_amsdu_aggr_ctrl(struct host_cmd_ds_command *cmd,
  71                                 int cmd_action,
  72                                 struct mwifiex_ds_11n_amsdu_aggr_ctrl *aa_ctrl);
  73
  74 /*
  75  * This function checks whether AMPDU is allowed or not for a particular TID.
  76  */
  77 static inline u8
  78 mwifiex_is_ampdu_allowed(struct mwifiex_private *priv, int tid)
  79 {
  80         return ((priv->aggr_prio_tbl[tid].ampdu_ap != BA_STREAM_NOT_ALLOWED)
  81                 ? true : false);
  82 }
  83
  84 /*
  85  * This function checks whether AMSDU is allowed or not for a particular TID.
  86  */
  87 static inline u8
  88 mwifiex_is_amsdu_allowed(struct mwifiex_private *priv, int tid)
  89 {
  90         return (((priv->aggr_prio_tbl[tid].amsdu != BA_STREAM_NOT_ALLOWED)
  91                         && ((priv->is_data_rate_auto)
  92                         || !((priv->bitmap_rates[2]) & 0x03)))
  93                 ? true : false);
  94 }
  95
  96 /*
  97  * This function checks whether a space is available for new BA stream or not.
  98  */
  99 static inline u8 mwifiex_space_avail_for_new_ba_stream(
 100                                         struct mwifiex_adapter *adapter)
 101 {
 102         struct mwifiex_private *priv;
 103         u8 i;
 104         u32 ba_stream_num = 0;
 105
 106         for (i = 0; i < adapter->priv_num; i++) {
 107                 priv = adapter->priv[i];
 108                 if (priv)
 109                         ba_stream_num += mwifiex_wmm_list_len(
 110                                                 (struct list_head *)
 111                                                 &priv->tx_ba_stream_tbl_ptr);
 112         }
 113
 114         return ((ba_stream_num <
 115                  MWIFIEX_MAX_TX_BASTREAM_SUPPORTED) ? true : false);
 116 }
 117
 118 /*
 119  * This function finds the correct Tx BA stream to delete.
 120  *
 121  * Upon successfully locating, both the TID and the RA are returned.
 122  */
 123 static inline u8
 124 mwifiex_find_stream_to_delete(struct mwifiex_private *priv, int ptr_tid,
 125                               int *ptid, u8 *ra)
 126 {
 127         int tid;
 128         u8 ret = false;
 129         struct mwifiex_tx_ba_stream_tbl *tx_tbl;
 130         unsigned long flags;
 131
 132         tid = priv->aggr_prio_tbl[ptr_tid].ampdu_user;
 133
 134         spin_lock_irqsave(&priv->tx_ba_stream_tbl_lock, flags);
 135         list_for_each_entry(tx_tbl, &priv->tx_ba_stream_tbl_ptr, list) {
 136                 if (tid > priv->aggr_prio_tbl[tx_tbl->tid].ampdu_user) {
 137                         tid = priv->aggr_prio_tbl[tx_tbl->tid].ampdu_user;
 138                         *ptid = tx_tbl->tid;
 139                         memcpy(ra, tx_tbl->ra, ETH_ALEN);
 140                         ret = true;
 141                 }
 142         }
 143         spin_unlock_irqrestore(&priv->tx_ba_stream_tbl_lock, flags);
 144
 145         return ret;
 146 }
 147
 148 /*
 149  * This function checks whether BA stream is set up or not.
 150  */
 151 static inline int
 152 mwifiex_is_ba_stream_setup(struct mwifiex_private *priv,
 153                           struct mwifiex_ra_list_tbl *ptr, int tid)
 154 {
 155         struct mwifiex_tx_ba_stream_tbl *tx_tbl;
 156
 157         tx_tbl = mwifiex_11n_get_tx_ba_stream_tbl(priv, tid, ptr->ra);
 158         if (tx_tbl && IS_BASTREAM_SETUP(tx_tbl))
 159                 return true;
 160
 161         return false;
 162 }
 163 #endif /* !_MWIFIEX_11N_H_ */