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_get_ba_tbl(struct
  50                                                              mwifiex_private
  51                                                              *priv, int tid,
  52                                                              u8 *ra);
  53 void mwifiex_create_ba_tbl(struct mwifiex_private *priv, u8 *ra, int tid,
  54                            enum mwifiex_ba_status ba_status);
  55 int mwifiex_send_addba(struct mwifiex_private *priv, int tid, u8 *peer_mac);
  56 int mwifiex_send_delba(struct mwifiex_private *priv, int tid, u8 *peer_mac,
  57                        int initiator);
  58 void mwifiex_11n_delete_ba_stream(struct mwifiex_private *priv, u8 *del_ba);
  59 int mwifiex_get_rx_reorder_tbl(struct mwifiex_private *priv,
  60                               struct mwifiex_ds_rx_reorder_tbl *buf);
  61 int mwifiex_get_tx_ba_stream_tbl(struct mwifiex_private *priv,
  62                                struct mwifiex_ds_tx_ba_stream_tbl *buf);
  63 int mwifiex_ret_amsdu_aggr_ctrl(struct host_cmd_ds_command *resp,
  64                                 struct mwifiex_ds_11n_amsdu_aggr_ctrl
  65                                 *amsdu_aggr_ctrl);
  66 int mwifiex_cmd_recfg_tx_buf(struct mwifiex_private *priv,
  67                              struct host_cmd_ds_command *cmd,
  68                              int cmd_action, u16 *buf_size);
  69 int 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  */
  76 static inline u8
  77 mwifiex_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  */
  86 static inline u8
  87 mwifiex_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  */
  97 static 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  */
 120 static inline u8
 121 mwifiex_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  */
 148 static inline int
 149 mwifiex_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_ */