| 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_ */ |