LXR linux/drivers/net/wireless/marvell/mwifiex/11n.h

   1/*
   2 * NXP Wireless LAN device driver: 802.11n
   3 *
   4 * Copyright 2011-2020 NXP
   5 *
   6 * This software file (the "File") is distributed by NXP
   7 * 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 mwifiex_private *priv,
  32                        struct host_cmd_ds_command *cmd, u16 cmd_action,
  33                        struct mwifiex_ds_11n_tx_cfg *txcfg);
  34int mwifiex_cmd_append_11n_tlv(struct mwifiex_private *priv,
  35                               struct mwifiex_bssdescriptor *bss_desc,
  36                               u8 **buffer);
  37int mwifiex_fill_cap_info(struct mwifiex_private *, u8 radio_type,
  38                          struct ieee80211_ht_cap *);
  39int mwifiex_set_get_11n_htcap_cfg(struct mwifiex_private *priv,
  40                                  u16 action, int *htcap_cfg);
  41void mwifiex_11n_delete_tx_ba_stream_tbl_entry(struct mwifiex_private *priv,
  42                                             struct mwifiex_tx_ba_stream_tbl
  43                                             *tx_tbl);
  44void mwifiex_11n_delete_all_tx_ba_stream_tbl(struct mwifiex_private *priv);
  45struct mwifiex_tx_ba_stream_tbl *mwifiex_get_ba_tbl(struct
  46                                                             mwifiex_private
  47                                                             *priv, int tid,
  48                                                             u8 *ra);
  49void mwifiex_create_ba_tbl(struct mwifiex_private *priv, u8 *ra, int tid,
  50                           enum mwifiex_ba_status ba_status);
  51int mwifiex_send_addba(struct mwifiex_private *priv, int tid, u8 *peer_mac);
  52int mwifiex_send_delba(struct mwifiex_private *priv, int tid, u8 *peer_mac,
  53                       int initiator);
  54void mwifiex_11n_delete_ba_stream(struct mwifiex_private *priv, u8 *del_ba);
  55int mwifiex_get_rx_reorder_tbl(struct mwifiex_private *priv,
  56                              struct mwifiex_ds_rx_reorder_tbl *buf);
  57int mwifiex_get_tx_ba_stream_tbl(struct mwifiex_private *priv,
  58                               struct mwifiex_ds_tx_ba_stream_tbl *buf);
  59int mwifiex_cmd_recfg_tx_buf(struct mwifiex_private *priv,
  60                             struct host_cmd_ds_command *cmd,
  61                             int cmd_action, u16 *buf_size);
  62int 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);
  65void mwifiex_del_tx_ba_stream_tbl_by_ra(struct mwifiex_private *priv, u8 *ra);
  66u8 mwifiex_get_sec_chan_offset(int chan);
  67
  68static inline u8
  69mwifiex_is_station_ampdu_allowed(struct mwifiex_private *priv,
  70                                 struct mwifiex_ra_list_tbl *ptr, int tid)
  71{
  72        struct mwifiex_sta_node *node = mwifiex_get_sta_entry(priv, ptr->ra);
  73
  74        if (unlikely(!node))
  75                return false;
  76
  77        return (node->ampdu_sta[tid] != BA_STREAM_NOT_ALLOWED) ? true : false;
  78}
  79
  80/* This function checks whether AMPDU is allowed or not for a particular TID. */
  81static inline u8
  82mwifiex_is_ampdu_allowed(struct mwifiex_private *priv,
  83                         struct mwifiex_ra_list_tbl *ptr, int tid)
  84{
  85        if (is_broadcast_ether_addr(ptr->ra))
  86                return false;
  87        if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_UAP) {
  88                return mwifiex_is_station_ampdu_allowed(priv, ptr, tid);
  89        } else {
  90                if (ptr->tdls_link)
  91                        return mwifiex_is_station_ampdu_allowed(priv, ptr, tid);
  92
  93                return (priv->aggr_prio_tbl[tid].ampdu_ap !=
  94                        BA_STREAM_NOT_ALLOWED) ? true : false;
  95        }
  96}
  97
  98/*
  99 * This function checks whether AMSDU is allowed or not for a particular TID.
 100 */
 101static inline u8
 102mwifiex_is_amsdu_allowed(struct mwifiex_private *priv, int tid)
 103{
 104        return (((priv->aggr_prio_tbl[tid].amsdu != BA_STREAM_NOT_ALLOWED) &&
 105                 (priv->is_data_rate_auto || !(priv->bitmap_rates[2] & 0x03)))
 106                ? true : false);
 107}
 108
 109/*
 110 * This function checks whether a space is available for new BA stream or not.
 111 */
 112static inline u8 mwifiex_space_avail_for_new_ba_stream(
 113                                        struct mwifiex_adapter *adapter)
 114{
 115        struct mwifiex_private *priv;
 116        u8 i;
 117        u32 ba_stream_num = 0, ba_stream_max;
 118
 119        ba_stream_max = MWIFIEX_MAX_TX_BASTREAM_SUPPORTED;
 120
 121        for (i = 0; i < adapter->priv_num; i++) {
 122                priv = adapter->priv[i];
 123                if (priv)
 124                        ba_stream_num += mwifiex_wmm_list_len(
 125                                &priv->tx_ba_stream_tbl_ptr);
 126        }
 127
 128        if (adapter->fw_api_ver == MWIFIEX_FW_V15) {
 129                ba_stream_max =
 130                               GETSUPP_TXBASTREAMS(adapter->hw_dot_11n_dev_cap);
 131                if (!ba_stream_max)
 132                        ba_stream_max = MWIFIEX_MAX_TX_BASTREAM_SUPPORTED;
 133        }
 134
 135        return ((ba_stream_num < ba_stream_max) ? true : false);
 136}
 137
 138/*
 139 * This function finds the correct Tx BA stream to delete.
 140 *
 141 * Upon successfully locating, both the TID and the RA are returned.
 142 */
 143static inline u8
 144mwifiex_find_stream_to_delete(struct mwifiex_private *priv, int ptr_tid,
 145                              int *ptid, u8 *ra)
 146{
 147        int tid;
 148        u8 ret = false;
 149        struct mwifiex_tx_ba_stream_tbl *tx_tbl;
 150
 151        tid = priv->aggr_prio_tbl[ptr_tid].ampdu_user;
 152
 153        spin_lock_bh(&priv->tx_ba_stream_tbl_lock);
 154        list_for_each_entry(tx_tbl, &priv->tx_ba_stream_tbl_ptr, list) {
 155                if (tid > priv->aggr_prio_tbl[tx_tbl->tid].ampdu_user) {
 156                        tid = priv->aggr_prio_tbl[tx_tbl->tid].ampdu_user;
 157                        *ptid = tx_tbl->tid;
 158                        memcpy(ra, tx_tbl->ra, ETH_ALEN);
 159                        ret = true;
 160                }
 161        }
 162        spin_unlock_bh(&priv->tx_ba_stream_tbl_lock);
 163
 164        return ret;
 165}
 166
 167/*
 168 * This function checks whether associated station is 11n enabled
 169 */
 170static inline int mwifiex_is_sta_11n_enabled(struct mwifiex_private *priv,
 171                                             struct mwifiex_sta_node *node)
 172{
 173        if (!node || ((priv->bss_role == MWIFIEX_BSS_ROLE_UAP) &&
 174                      !priv->ap_11n_enabled) ||
 175            ((priv->bss_mode == NL80211_IFTYPE_ADHOC) &&
 176             !priv->adapter->adhoc_11n_enabled))
 177                return 0;
 178
 179        return node->is_11n_enabled;
 180}
 181
 182static inline u8
 183mwifiex_tdls_peer_11n_enabled(struct mwifiex_private *priv, const u8 *ra)
 184{
 185        struct mwifiex_sta_node *node = mwifiex_get_sta_entry(priv, ra);
 186        if (node)
 187                return node->is_11n_enabled;
 188
 189        return false;
 190}
 191#endif /* !_MWIFIEX_11N_H_ */
 192