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
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	unsigned long flags;
151
152	tid = priv->aggr_prio_tbl[ptr_tid].ampdu_user;
153
154	spin_lock_irqsave(&priv->tx_ba_stream_tbl_lock, flags);
155	list_for_each_entry(tx_tbl, &priv->tx_ba_stream_tbl_ptr, list) {
156		if (tid > priv->aggr_prio_tbl[tx_tbl->tid].ampdu_user) {
157			tid = priv->aggr_prio_tbl[tx_tbl->tid].ampdu_user;
158			*ptid = tx_tbl->tid;
159			memcpy(ra, tx_tbl->ra, ETH_ALEN);
160			ret = true;
161		}
162	}
163	spin_unlock_irqrestore(&priv->tx_ba_stream_tbl_lock, flags);
164
165	return ret;
166}
167
168/*
169 * This function checks whether associated station is 11n enabled
170 */
171static inline int mwifiex_is_sta_11n_enabled(struct mwifiex_private *priv,
172					     struct mwifiex_sta_node *node)
173{
174
175	if (!node || (priv->bss_role != MWIFIEX_BSS_ROLE_UAP) ||
176	    !priv->ap_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