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_cmd_11n_cfg(struct mwifiex_private *priv,
  32                         struct host_cmd_ds_command *cmd, u16 cmd_action,
  33                         struct mwifiex_ds_11n_tx_cfg *txcfg);
  34 int mwifiex_cmd_append_11n_tlv(struct mwifiex_private *priv,
  35                                struct mwifiex_bssdescriptor *bss_desc,
  36                                u8 **buffer);
  37 void mwifiex_fill_cap_info(struct mwifiex_private *, u8 radio_type,
  38                            struct mwifiex_ie_types_htcap *);
  39 int mwifiex_set_get_11n_htcap_cfg(struct mwifiex_private *priv,
  40                                   u16 action, int *htcap_cfg);
  41 void mwifiex_11n_delete_tx_ba_stream_tbl_entry(struct mwifiex_private *priv,
  42                                              struct mwifiex_tx_ba_stream_tbl
  43                                              *tx_tbl);
  44 void mwifiex_11n_delete_all_tx_ba_stream_tbl(struct mwifiex_private *priv);
  45 struct mwifiex_tx_ba_stream_tbl *mwifiex_get_ba_tbl(struct
  46                                                              mwifiex_private
  47                                                              *priv, int tid,
  48                                                              u8 *ra);
  49 void mwifiex_create_ba_tbl(struct mwifiex_private *priv, u8 *ra, int tid,
  50                            enum mwifiex_ba_status ba_status);
  51 int mwifiex_send_addba(struct mwifiex_private *priv, int tid, u8 *peer_mac);
  52 int mwifiex_send_delba(struct mwifiex_private *priv, int tid, u8 *peer_mac,
  53                        int initiator);
  54 void mwifiex_11n_delete_ba_stream(struct mwifiex_private *priv, u8 *del_ba);
  55 int mwifiex_get_rx_reorder_tbl(struct mwifiex_private *priv,
  56                               struct mwifiex_ds_rx_reorder_tbl *buf);
  57 int mwifiex_get_tx_ba_stream_tbl(struct mwifiex_private *priv,
  58                                struct mwifiex_ds_tx_ba_stream_tbl *buf);
  59 int mwifiex_cmd_recfg_tx_buf(struct mwifiex_private *priv,
  60                              struct host_cmd_ds_command *cmd,
  61                              int cmd_action, u16 *buf_size);
  62 int mwifiex_cmd_amsdu_aggr_ctrl(struct host_cmd_ds_command *cmd,
  63                                 int cmd_action,
  64                                 struct mwifiex_ds_11n_amsdu_aggr_ctrl *aa_ctrl);
  65 void mwifiex_del_tx_ba_stream_tbl_by_ra(struct mwifiex_private *priv, u8 *ra);
  66
  67 /*
  68  * This function checks whether AMPDU is allowed or not for a particular TID.
  69  */
  70 static inline u8
  71 mwifiex_is_ampdu_allowed(struct mwifiex_private *priv, int tid)
  72 {
  73         return ((priv->aggr_prio_tbl[tid].ampdu_ap != BA_STREAM_NOT_ALLOWED)
  74                 ? true : false);
  75 }
  76
  77 /*
  78  * This function checks whether AMSDU is allowed or not for a particular TID.
  79  */
  80 static inline u8
  81 mwifiex_is_amsdu_allowed(struct mwifiex_private *priv, int tid)
  82 {
  83         return (((priv->aggr_prio_tbl[tid].amsdu != BA_STREAM_NOT_ALLOWED) &&
  84                  (priv->is_data_rate_auto || !(priv->bitmap_rates[2] & 0x03)))
  85                 ? true : false);
  86 }
  87
  88 /*
  89  * This function checks whether a space is available for new BA stream or not.
  90  */
  91 static inline u8 mwifiex_space_avail_for_new_ba_stream(
  92                                         struct mwifiex_adapter *adapter)
  93 {
  94         struct mwifiex_private *priv;
  95         u8 i;
  96         u32 ba_stream_num = 0;
  97
  98         for (i = 0; i < adapter->priv_num; i++) {
  99                 priv = adapter->priv[i];
 100                 if (priv)
 101                         ba_stream_num += mwifiex_wmm_list_len(
 102                                 &priv->tx_ba_stream_tbl_ptr);
 103         }
 104
 105         return ((ba_stream_num <
 106                  MWIFIEX_MAX_TX_BASTREAM_SUPPORTED) ? true : false);
 107 }
 108
 109 /*
 110  * This function finds the correct Tx BA stream to delete.
 111  *
 112  * Upon successfully locating, both the TID and the RA are returned.
 113  */
 114 static inline u8
 115 mwifiex_find_stream_to_delete(struct mwifiex_private *priv, int ptr_tid,
 116                               int *ptid, u8 *ra)
 117 {
 118         int tid;
 119         u8 ret = false;
 120         struct mwifiex_tx_ba_stream_tbl *tx_tbl;
 121         unsigned long flags;
 122
 123         tid = priv->aggr_prio_tbl[ptr_tid].ampdu_user;
 124
 125         spin_lock_irqsave(&priv->tx_ba_stream_tbl_lock, flags);
 126         list_for_each_entry(tx_tbl, &priv->tx_ba_stream_tbl_ptr, list) {
 127                 if (tid > priv->aggr_prio_tbl[tx_tbl->tid].ampdu_user) {
 128                         tid = priv->aggr_prio_tbl[tx_tbl->tid].ampdu_user;
 129                         *ptid = tx_tbl->tid;
 130                         memcpy(ra, tx_tbl->ra, ETH_ALEN);
 131                         ret = true;
 132                 }
 133         }
 134         spin_unlock_irqrestore(&priv->tx_ba_stream_tbl_lock, flags);
 135
 136         return ret;
 137 }
 138
 139 /*
 140  * This function checks whether BA stream is set up or not.
 141  */
 142 static inline int
 143 mwifiex_is_ba_stream_setup(struct mwifiex_private *priv,
 144                            struct mwifiex_ra_list_tbl *ptr, int tid)
 145 {
 146         struct mwifiex_tx_ba_stream_tbl *tx_tbl;
 147
 148         tx_tbl = mwifiex_get_ba_tbl(priv, tid, ptr->ra);
 149         if (tx_tbl && IS_BASTREAM_SETUP(tx_tbl))
 150                 return true;
 151
 152         return false;
 153 }
 154
 155 /*
 156  * This function checks whether associated station is 11n enabled
 157  */
 158 static inline int mwifiex_is_sta_11n_enabled(struct mwifiex_private *priv,
 159                                              struct mwifiex_sta_node *node)
 160 {
 161
 162         if (!node || (priv->bss_role != MWIFIEX_BSS_ROLE_UAP) ||
 163             !priv->ap_11n_enabled)
 164                 return 0;
 165
 166         return node->is_11n_enabled;
 167 }
 168 #endif /* !_MWIFIEX_11N_H_ */