Linux Kernel  3.7.1
 All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
11n.h
Go to the documentation of this file.
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 host_cmd_ds_command *cmd, u16 cmd_action,
32  struct mwifiex_ds_11n_tx_cfg *txcfg);
33 
34 int mwifiex_cmd_append_11n_tlv(struct mwifiex_private *priv,
35  struct mwifiex_bssdescriptor *bss_desc,
36  u8 **buffer);
37 void mwifiex_cfg_tx_buf(struct mwifiex_private *priv,
38  struct mwifiex_bssdescriptor *bss_desc);
39 void mwifiex_fill_cap_info(struct mwifiex_private *, u8 radio_type,
40  struct mwifiex_ie_types_htcap *);
41 int mwifiex_set_get_11n_htcap_cfg(struct mwifiex_private *priv,
42  u16 action, int *htcap_cfg);
43 void mwifiex_11n_delete_tx_ba_stream_tbl_entry(struct mwifiex_private *priv,
44  struct mwifiex_tx_ba_stream_tbl
45  *tx_tbl);
46 void mwifiex_11n_delete_all_tx_ba_stream_tbl(struct mwifiex_private *priv);
47 struct mwifiex_tx_ba_stream_tbl *mwifiex_get_ba_tbl(struct
48  mwifiex_private
49  *priv, int tid,
50  u8 *ra);
51 void mwifiex_create_ba_tbl(struct mwifiex_private *priv, u8 *ra, int tid,
52  enum mwifiex_ba_status ba_status);
53 int mwifiex_send_addba(struct mwifiex_private *priv, int tid, u8 *peer_mac);
54 int mwifiex_send_delba(struct mwifiex_private *priv, int tid, u8 *peer_mac,
55  int initiator);
56 void mwifiex_11n_delete_ba_stream(struct mwifiex_private *priv, u8 *del_ba);
57 int mwifiex_get_rx_reorder_tbl(struct mwifiex_private *priv,
58  struct mwifiex_ds_rx_reorder_tbl *buf);
59 int mwifiex_get_tx_ba_stream_tbl(struct mwifiex_private *priv,
60  struct mwifiex_ds_tx_ba_stream_tbl *buf);
61 int mwifiex_cmd_recfg_tx_buf(struct mwifiex_private *priv,
62  struct host_cmd_ds_command *cmd,
63  int cmd_action, u16 *buf_size);
64 int 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);
67 void 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  */
72 static inline u8
73 mwifiex_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  */
82 static inline u8
83 mwifiex_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  */
93 static 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  */
116 static inline u8
117 mwifiex_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  */
144 static inline int
145 mwifiex_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  */
160 static 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_ */
Generated on Thu Jan 10 2013 14:12:08 for Linux Kernel by   doxygen 1.8.2