1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3  * NXP Wireless LAN device driver: 802.11n
4  *
5  * Copyright 2011-2020 NXP
6  */
7 
8 #ifndef _MWIFIEX_11N_H_
9 #define _MWIFIEX_11N_H_
10 
11 #include "11n_aggr.h"
12 #include "11n_rxreorder.h"
13 #include "wmm.h"
14 
15 int mwifiex_ret_11n_delba(struct mwifiex_private *priv,
16 			  struct host_cmd_ds_command *resp);
17 int mwifiex_ret_11n_addba_req(struct mwifiex_private *priv,
18 			      struct host_cmd_ds_command *resp);
19 int mwifiex_cmd_11n_cfg(struct mwifiex_private *priv,
20 			struct host_cmd_ds_command *cmd, u16 cmd_action,
21 			struct mwifiex_ds_11n_tx_cfg *txcfg);
22 int mwifiex_cmd_append_11n_tlv(struct mwifiex_private *priv,
23 			       struct mwifiex_bssdescriptor *bss_desc,
24 			       u8 **buffer);
25 int mwifiex_fill_cap_info(struct mwifiex_private *, u8 radio_type,
26 			  struct ieee80211_ht_cap *);
27 int mwifiex_set_get_11n_htcap_cfg(struct mwifiex_private *priv,
28 				  u16 action, int *htcap_cfg);
29 void mwifiex_11n_delete_tx_ba_stream_tbl_entry(struct mwifiex_private *priv,
30 					     struct mwifiex_tx_ba_stream_tbl
31 					     *tx_tbl);
32 void mwifiex_11n_delete_all_tx_ba_stream_tbl(struct mwifiex_private *priv);
33 struct mwifiex_tx_ba_stream_tbl *mwifiex_get_ba_tbl(struct
34 							     mwifiex_private
35 							     *priv, int tid,
36 							     u8 *ra);
37 void mwifiex_create_ba_tbl(struct mwifiex_private *priv, u8 *ra, int tid,
38 			   enum mwifiex_ba_status ba_status);
39 int mwifiex_send_addba(struct mwifiex_private *priv, int tid, u8 *peer_mac);
40 int mwifiex_send_delba(struct mwifiex_private *priv, int tid, u8 *peer_mac,
41 		       int initiator);
42 void mwifiex_11n_delete_ba_stream(struct mwifiex_private *priv, u8 *del_ba);
43 int mwifiex_get_rx_reorder_tbl(struct mwifiex_private *priv,
44 			      struct mwifiex_ds_rx_reorder_tbl *buf);
45 int mwifiex_get_tx_ba_stream_tbl(struct mwifiex_private *priv,
46 			       struct mwifiex_ds_tx_ba_stream_tbl *buf);
47 int mwifiex_cmd_recfg_tx_buf(struct mwifiex_private *priv,
48 			     struct host_cmd_ds_command *cmd,
49 			     int cmd_action, u16 *buf_size);
50 int mwifiex_cmd_amsdu_aggr_ctrl(struct host_cmd_ds_command *cmd,
51 				int cmd_action,
52 				struct mwifiex_ds_11n_amsdu_aggr_ctrl *aa_ctrl);
53 void mwifiex_del_tx_ba_stream_tbl_by_ra(struct mwifiex_private *priv, u8 *ra);
54 u8 mwifiex_get_sec_chan_offset(int chan);
55 
56 static inline u8
mwifiex_is_station_ampdu_allowed(struct mwifiex_private * priv,struct mwifiex_ra_list_tbl * ptr,int tid)57 mwifiex_is_station_ampdu_allowed(struct mwifiex_private *priv,
58 				 struct mwifiex_ra_list_tbl *ptr, int tid)
59 {
60 	struct mwifiex_sta_node *node = mwifiex_get_sta_entry(priv, ptr->ra);
61 
62 	if (unlikely(!node))
63 		return false;
64 
65 	return (node->ampdu_sta[tid] != BA_STREAM_NOT_ALLOWED) ? true : false;
66 }
67 
68 /* This function checks whether AMPDU is allowed or not for a particular TID. */
69 static inline u8
mwifiex_is_ampdu_allowed(struct mwifiex_private * priv,struct mwifiex_ra_list_tbl * ptr,int tid)70 mwifiex_is_ampdu_allowed(struct mwifiex_private *priv,
71 			 struct mwifiex_ra_list_tbl *ptr, int tid)
72 {
73 	if (is_broadcast_ether_addr(ptr->ra))
74 		return false;
75 	if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_UAP) {
76 		return mwifiex_is_station_ampdu_allowed(priv, ptr, tid);
77 	} else {
78 		if (ptr->tdls_link)
79 			return mwifiex_is_station_ampdu_allowed(priv, ptr, tid);
80 
81 		return (priv->aggr_prio_tbl[tid].ampdu_ap !=
82 			BA_STREAM_NOT_ALLOWED) ? true : false;
83 	}
84 }
85 
86 /*
87  * This function checks whether AMSDU is allowed or not for a particular TID.
88  */
89 static inline u8
mwifiex_is_amsdu_allowed(struct mwifiex_private * priv,int tid)90 mwifiex_is_amsdu_allowed(struct mwifiex_private *priv, int tid)
91 {
92 	return (((priv->aggr_prio_tbl[tid].amsdu != BA_STREAM_NOT_ALLOWED) &&
93 		 (priv->is_data_rate_auto || !(priv->bitmap_rates[2] & 0x03)))
94 		? true : false);
95 }
96 
97 /*
98  * This function checks whether a space is available for new BA stream or not.
99  */
mwifiex_space_avail_for_new_ba_stream(struct mwifiex_adapter * adapter)100 static inline u8 mwifiex_space_avail_for_new_ba_stream(
101 					struct mwifiex_adapter *adapter)
102 {
103 	struct mwifiex_private *priv;
104 	u8 i;
105 	u32 ba_stream_num = 0, ba_stream_max;
106 
107 	ba_stream_max = MWIFIEX_MAX_TX_BASTREAM_SUPPORTED;
108 
109 	for (i = 0; i < adapter->priv_num; i++) {
110 		priv = adapter->priv[i];
111 		if (priv)
112 			ba_stream_num += mwifiex_wmm_list_len(
113 				&priv->tx_ba_stream_tbl_ptr);
114 	}
115 
116 	if (adapter->fw_api_ver == MWIFIEX_FW_V15) {
117 		ba_stream_max =
118 			       GETSUPP_TXBASTREAMS(adapter->hw_dot_11n_dev_cap);
119 		if (!ba_stream_max)
120 			ba_stream_max = MWIFIEX_MAX_TX_BASTREAM_SUPPORTED;
121 	}
122 
123 	return ((ba_stream_num < ba_stream_max) ? true : false);
124 }
125 
126 /*
127  * This function finds the correct Tx BA stream to delete.
128  *
129  * Upon successfully locating, both the TID and the RA are returned.
130  */
131 static inline u8
mwifiex_find_stream_to_delete(struct mwifiex_private * priv,int ptr_tid,int * ptid,u8 * ra)132 mwifiex_find_stream_to_delete(struct mwifiex_private *priv, int ptr_tid,
133 			      int *ptid, u8 *ra)
134 {
135 	int tid;
136 	u8 ret = false;
137 	struct mwifiex_tx_ba_stream_tbl *tx_tbl;
138 
139 	tid = priv->aggr_prio_tbl[ptr_tid].ampdu_user;
140 
141 	spin_lock_bh(&priv->tx_ba_stream_tbl_lock);
142 	list_for_each_entry(tx_tbl, &priv->tx_ba_stream_tbl_ptr, list) {
143 		if (tid > priv->aggr_prio_tbl[tx_tbl->tid].ampdu_user) {
144 			tid = priv->aggr_prio_tbl[tx_tbl->tid].ampdu_user;
145 			*ptid = tx_tbl->tid;
146 			memcpy(ra, tx_tbl->ra, ETH_ALEN);
147 			ret = true;
148 		}
149 	}
150 	spin_unlock_bh(&priv->tx_ba_stream_tbl_lock);
151 
152 	return ret;
153 }
154 
155 /*
156  * This function checks whether associated station is 11n enabled
157  */
mwifiex_is_sta_11n_enabled(struct mwifiex_private * priv,struct mwifiex_sta_node * node)158 static inline int mwifiex_is_sta_11n_enabled(struct mwifiex_private *priv,
159 					     struct mwifiex_sta_node *node)
160 {
161 	if (!node || ((priv->bss_role == MWIFIEX_BSS_ROLE_UAP) &&
162 		      !priv->ap_11n_enabled) ||
163 	    ((priv->bss_mode == NL80211_IFTYPE_ADHOC) &&
164 	     !priv->adapter->adhoc_11n_enabled))
165 		return 0;
166 
167 	return node->is_11n_enabled;
168 }
169 
170 static inline u8
mwifiex_tdls_peer_11n_enabled(struct mwifiex_private * priv,const u8 * ra)171 mwifiex_tdls_peer_11n_enabled(struct mwifiex_private *priv, const u8 *ra)
172 {
173 	struct mwifiex_sta_node *node = mwifiex_get_sta_entry(priv, ra);
174 	if (node)
175 		return node->is_11n_enabled;
176 
177 	return false;
178 }
179 #endif /* !_MWIFIEX_11N_H_ */
180