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_cmd_11n_cfg(struct host_cmd_ds_command *cmd, u16 cmd_action,
  32                        struct mwifiex_ds_11n_tx_cfg *txcfg);
  33
  34int mwifiex_cmd_append_11n_tlv(struct mwifiex_private *priv,
  35                               struct mwifiex_bssdescriptor *bss_desc,
  36                               u8 **buffer);
  37void mwifiex_cfg_tx_buf(struct mwifiex_private *priv,
  38                        struct mwifiex_bssdescriptor *bss_desc);
  39void mwifiex_fill_cap_info(struct mwifiex_private *, u8 radio_type,
  40                           struct mwifiex_ie_types_htcap *);
  41int mwifiex_set_get_11n_htcap_cfg(struct mwifiex_private *priv,
  42                                  u16 action, int *htcap_cfg);
  43void mwifiex_11n_delete_tx_ba_stream_tbl_entry(struct mwifiex_private *priv,
  44                                             struct mwifiex_tx_ba_stream_tbl
  45                                             *tx_tbl);
  46void mwifiex_11n_delete_all_tx_ba_stream_tbl(struct mwifiex_private *priv);
  47struct mwifiex_tx_ba_stream_tbl *mwifiex_get_ba_tbl(struct
  48                                                             mwifiex_private
  49                                                             *priv, int tid,
  50                                                             u8 *ra);
  51void mwifiex_create_ba_tbl(struct mwifiex_private *priv, u8 *ra, int tid,
  52                           enum mwifiex_ba_status ba_status);
  53int mwifiex_send_addba(struct mwifiex_private *priv, int tid, u8 *peer_mac);
  54int mwifiex_send_delba(struct mwifiex_private *priv, int tid, u8 *peer_mac,
  55                       int initiator);
  56void mwifiex_11n_delete_ba_stream(struct mwifiex_private *priv, u8 *del_ba);
  57int mwifiex_get_rx_reorder_tbl(struct mwifiex_private *priv,
  58                              struct mwifiex_ds_rx_reorder_tbl *buf);
  59int mwifiex_get_tx_ba_stream_tbl(struct mwifiex_private *priv,
  60                               struct mwifiex_ds_tx_ba_stream_tbl *buf);
  61int mwifiex_cmd_recfg_tx_buf(struct mwifiex_private *priv,
  62                             struct host_cmd_ds_command *cmd,
  63                             int cmd_action, u16 *buf_size);
  64int mwifiex_cmd_amsdu_aggr_ctrl(struct host_cmd_ds_command *cmd,
  65                                int cmd_action,
  66                                struct mwifiex_ds_11n_amsdu_aggr_ctrl *aa_ctrl);
  67void mwifiex_del_tx_ba_stream_tbl_by_ra(struct mwifiex_private *priv, u8 *ra);
  68
  69/*
  70 * This function checks whether AMPDU is allowed or not for a particular TID.
  71 */
  72static inline u8
  73mwifiex_is_ampdu_allowed(struct mwifiex_private *priv, int tid)
  74{
  75        return ((priv->aggr_prio_tbl[tid].ampdu_ap != BA_STREAM_NOT_ALLOWED)
  76                ? true : false);
  77}
  78
  79/*
  80 * This function checks whether AMSDU is allowed or not for a particular TID.
  81 */
  82static inline u8
  83mwifiex_is_amsdu_allowed(struct mwifiex_private *priv, int tid)
  84{
  85        return (((priv->aggr_prio_tbl[tid].amsdu != BA_STREAM_NOT_ALLOWED) &&
  86                 (priv->is_data_rate_auto || !(priv->bitmap_rates[2] & 0x03)))
  87                ? true : false);
  88}
  89
  90/*
  91 * This function checks whether a space is available for new BA stream or not.
  92 */
  93static inline u8 mwifiex_space_avail_for_new_ba_stream(
  94                                        struct mwifiex_adapter *adapter)
  95{
  96        struct mwifiex_private *priv;
  97        u8 i;
  98        u32 ba_stream_num = 0;
  99
 100        for (i = 0; i < adapter->priv_num; i++) {
 101                priv = adapter->priv[i];
 102                if (priv)
 103                        ba_stream_num += mwifiex_wmm_list_len(
 104                                &priv->tx_ba_stream_tbl_ptr);
 105        }
 106
 107        return ((ba_stream_num <
 108                 MWIFIEX_MAX_TX_BASTREAM_SUPPORTED) ? true : false);
 109}
 110
 111/*
 112 * This function finds the correct Tx BA stream to delete.
 113 *
 114 * Upon successfully locating, both the TID and the RA are returned.
 115 */
 116static inline u8
 117mwifiex_find_stream_to_delete(struct mwifiex_private *priv, int ptr_tid,
 118                              int *ptid, u8 *ra)
 119{
 120        int tid;
 121        u8 ret = false;
 122        struct mwifiex_tx_ba_stream_tbl *tx_tbl;
 123        unsigned long flags;
 124
 125        tid = priv->aggr_prio_tbl[ptr_tid].ampdu_user;
 126
 127        spin_lock_irqsave(&priv->tx_ba_stream_tbl_lock, flags);
 128        list_for_each_entry(tx_tbl, &priv->tx_ba_stream_tbl_ptr, list) {
 129                if (tid > priv->aggr_prio_tbl[tx_tbl->tid].ampdu_user) {
 130                        tid = priv->aggr_prio_tbl[tx_tbl->tid].ampdu_user;
 131                        *ptid = tx_tbl->tid;
 132                        memcpy(ra, tx_tbl->ra, ETH_ALEN);
 133                        ret = true;
 134                }
 135        }
 136        spin_unlock_irqrestore(&priv->tx_ba_stream_tbl_lock, flags);
 137
 138        return ret;
 139}
 140
 141/*
 142 * This function checks whether BA stream is set up or not.
 143 */
 144static inline int
 145mwifiex_is_ba_stream_setup(struct mwifiex_private *priv,
 146                           struct mwifiex_ra_list_tbl *ptr, int tid)
 147{
 148        struct mwifiex_tx_ba_stream_tbl *tx_tbl;
 149
 150        tx_tbl = mwifiex_get_ba_tbl(priv, tid, ptr->ra);
 151        if (tx_tbl && IS_BASTREAM_SETUP(tx_tbl))
 152                return true;
 153
 154        return false;
 155}
 156
 157/*
 158 * This function checks whether associated station is 11n enabled
 159 */
 160static inline int mwifiex_is_sta_11n_enabled(struct mwifiex_private *priv,
 161                                             struct mwifiex_sta_node *node)
 162{
 163
 164        if (!node || (priv->bss_role != MWIFIEX_BSS_ROLE_UAP) ||
 165            !priv->ap_11n_enabled)
 166                return 0;
 167
 168        return node->is_11n_enabled;
 169}
 170#endif /* !_MWIFIEX_11N_H_ */
 171