1 /* 2 * Marvell Wireless LAN device driver: 802.11n 3 * 4 * Copyright (C) 2011-2014, 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 int mwifiex_fill_cap_info(struct mwifiex_private *, u8 radio_type, 38 struct ieee80211_ht_cap *); 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 u8 mwifiex_get_sec_chan_offset(int chan); 67 68 static inline u8 69 mwifiex_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. */ 81 static inline u8 82 mwifiex_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 */ 101 static inline u8 102 mwifiex_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 */ 112 static 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 */ 143 static inline u8 144 mwifiex_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 */ 170 static 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 } 181 182 static inline u8 183 mwifiex_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