/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 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);
 37void mwifiex_fill_cap_info(struct mwifiex_private *, u8 radio_type,
 38			   struct mwifiex_ie_types_htcap *);
 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);
 66
 67/*
 68 * This function checks whether AMPDU is allowed or not for a particular TID.
 69 */
 70static inline u8
 71mwifiex_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 */
 80static inline u8
 81mwifiex_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 */
 91static 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 */
114static inline u8
115mwifiex_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 */
142static inline int
143mwifiex_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 */
158static 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_ */