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                         void *data_buf);
  33 int mwifiex_cmd_11n_cfg(struct host_cmd_ds_command *cmd,
  34                         u16 cmd_action, void *data_buf);
  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                                 void *data_buf);
  66 int mwifiex_cmd_recfg_tx_buf(struct mwifiex_private *priv,
  67                              struct host_cmd_ds_command *cmd,
  68                              int cmd_action, void *data_buf);
  69 int mwifiex_cmd_amsdu_aggr_ctrl(struct host_cmd_ds_command *cmd,
  70                                 int cmd_action, void *data_buf);
  71
  72 /*
  73  * This function checks whether AMPDU is allowed or not for a particular TID.
  74  */
  75 static inline u8
  76 mwifiex_is_ampdu_allowed(struct mwifiex_private *priv, int tid)
  77 {
  78         return ((priv->aggr_prio_tbl[tid].ampdu_ap != BA_STREAM_NOT_ALLOWED)
  79                 ? true : false);
  80 }
  81
  82 /*
  83  * This function checks whether AMSDU is allowed or not for a particular TID.
  84  */
  85 static inline u8
  86 mwifiex_is_amsdu_allowed(struct mwifiex_private *priv, int tid)
  87 {
  88         return (((priv->aggr_prio_tbl[tid].amsdu != BA_STREAM_NOT_ALLOWED)
  89                         && ((priv->is_data_rate_auto)
  90                         || !((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                                                 (struct list_head *)
 109                                                 &priv->tx_ba_stream_tbl_ptr);
 110         }
 111
 112         return ((ba_stream_num <
 113                  MWIFIEX_MAX_TX_BASTREAM_SUPPORTED) ? true : false);
 114 }
 115
 116 /*
 117  * This function finds the correct Tx BA stream to delete.
 118  *
 119  * Upon successfully locating, both the TID and the RA are returned.
 120  */
 121 static inline u8
 122 mwifiex_find_stream_to_delete(struct mwifiex_private *priv, int ptr_tid,
 123                               int *ptid, u8 *ra)
 124 {
 125         int tid;
 126         u8 ret = false;
 127         struct mwifiex_tx_ba_stream_tbl *tx_tbl;
 128         unsigned long flags;
 129
 130         tid = priv->aggr_prio_tbl[ptr_tid].ampdu_user;
 131
 132         spin_lock_irqsave(&priv->tx_ba_stream_tbl_lock, flags);
 133         list_for_each_entry(tx_tbl, &priv->tx_ba_stream_tbl_ptr, list) {
 134                 if (tid > priv->aggr_prio_tbl[tx_tbl->tid].ampdu_user) {
 135                         tid = priv->aggr_prio_tbl[tx_tbl->tid].ampdu_user;
 136                         *ptid = tx_tbl->tid;
 137                         memcpy(ra, tx_tbl->ra, ETH_ALEN);
 138                         ret = true;
 139                 }
 140         }
 141         spin_unlock_irqrestore(&priv->tx_ba_stream_tbl_lock, flags);
 142
 143         return ret;
 144 }
 145
 146 /*
 147  * This function checks whether BA stream is set up or not.
 148  */
 149 static inline int
 150 mwifiex_is_ba_stream_setup(struct mwifiex_private *priv,
 151                           struct mwifiex_ra_list_tbl *ptr, int tid)
 152 {
 153         struct mwifiex_tx_ba_stream_tbl *tx_tbl;
 154
 155         tx_tbl = mwifiex_11n_get_tx_ba_stream_tbl(priv, tid, ptr->ra);
 156         if (tx_tbl && IS_BASTREAM_SETUP(tx_tbl))
 157                 return true;
 158
 159         return false;
 160 }
 161 #endif /* !_MWIFIEX_11N_H_ */