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1 /*
2  * Marvell Wireless LAN device driver: WMM
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_WMM_H_
21 #define _MWIFIEX_WMM_H_
22 
23 enum ieee_types_wmm_aciaifsn_bitmasks {
24 	MWIFIEX_AIFSN = (BIT(0) | BIT(1) | BIT(2) | BIT(3)),
25 	MWIFIEX_ACM = BIT(4),
26 	MWIFIEX_ACI = (BIT(5) | BIT(6)),
27 };
28 
29 enum ieee_types_wmm_ecw_bitmasks {
30 	MWIFIEX_ECW_MIN = (BIT(0) | BIT(1) | BIT(2) | BIT(3)),
31 	MWIFIEX_ECW_MAX = (BIT(4) | BIT(5) | BIT(6) | BIT(7)),
32 };
33 
34 static const u16 mwifiex_1d_to_wmm_queue[8] = { 1, 0, 0, 1, 2, 2, 3, 3 };
35 
36 /*
37  * This table inverses the tos_to_tid operation to get a priority
38  * which is in sequential order, and can be compared.
39  * Use this to compare the priority of two different TIDs.
40  */
41 static const u8 tos_to_tid_inv[] = {
42 	0x02,  /* from tos_to_tid[2] = 0 */
43 	0x00,  /* from tos_to_tid[0] = 1 */
44 	0x01,  /* from tos_to_tid[1] = 2 */
45 	0x03,
46 	0x04,
47 	0x05,
48 	0x06,
49 	0x07};
50 
51 /*
52  * This function retrieves the TID of the given RA list.
53  */
54 static inline int
mwifiex_get_tid(struct mwifiex_ra_list_tbl * ptr)55 mwifiex_get_tid(struct mwifiex_ra_list_tbl *ptr)
56 {
57 	struct sk_buff *skb;
58 
59 	if (skb_queue_empty(&ptr->skb_head))
60 		return 0;
61 
62 	skb = skb_peek(&ptr->skb_head);
63 
64 	return skb->priority;
65 }
66 
67 /*
68  * This function gets the length of a list.
69  */
70 static inline int
mwifiex_wmm_list_len(struct list_head * head)71 mwifiex_wmm_list_len(struct list_head *head)
72 {
73 	struct list_head *pos;
74 	int count = 0;
75 
76 	list_for_each(pos, head)
77 		++count;
78 
79 	return count;
80 }
81 
82 /*
83  * This function checks if a RA list is empty or not.
84  */
85 static inline u8
mwifiex_wmm_is_ra_list_empty(struct list_head * ra_list_hhead)86 mwifiex_wmm_is_ra_list_empty(struct list_head *ra_list_hhead)
87 {
88 	struct mwifiex_ra_list_tbl *ra_list;
89 	int is_list_empty;
90 
91 	list_for_each_entry(ra_list, ra_list_hhead, list) {
92 		is_list_empty = skb_queue_empty(&ra_list->skb_head);
93 		if (!is_list_empty)
94 			return false;
95 	}
96 
97 	return true;
98 }
99 
100 void mwifiex_wmm_add_buf_txqueue(struct mwifiex_private *priv,
101 				 struct sk_buff *skb);
102 void mwifiex_ralist_add(struct mwifiex_private *priv, const u8 *ra);
103 void mwifiex_rotate_priolists(struct mwifiex_private *priv,
104 			      struct mwifiex_ra_list_tbl *ra, int tid);
105 
106 int mwifiex_wmm_lists_empty(struct mwifiex_adapter *adapter);
107 void mwifiex_wmm_process_tx(struct mwifiex_adapter *adapter);
108 int mwifiex_is_ralist_valid(struct mwifiex_private *priv,
109 			    struct mwifiex_ra_list_tbl *ra_list, int tid);
110 
111 u8 mwifiex_wmm_compute_drv_pkt_delay(struct mwifiex_private *priv,
112 				     const struct sk_buff *skb);
113 void mwifiex_wmm_init(struct mwifiex_adapter *adapter);
114 
115 u32 mwifiex_wmm_process_association_req(struct mwifiex_private *priv,
116 					u8 **assoc_buf,
117 					struct ieee_types_wmm_parameter *wmmie,
118 					struct ieee80211_ht_cap *htcap);
119 
120 void mwifiex_wmm_setup_queue_priorities(struct mwifiex_private *priv,
121 					struct ieee_types_wmm_parameter *wmm_ie);
122 void mwifiex_wmm_setup_ac_downgrade(struct mwifiex_private *priv);
123 int mwifiex_ret_wmm_get_status(struct mwifiex_private *priv,
124 			       const struct host_cmd_ds_command *resp);
125 struct mwifiex_ra_list_tbl *
126 mwifiex_wmm_get_queue_raptr(struct mwifiex_private *priv, u8 tid,
127 			    const u8 *ra_addr);
128 u8 mwifiex_wmm_downgrade_tid(struct mwifiex_private *priv, u32 tid);
129 
130 #endif /* !_MWIFIEX_WMM_H_ */
131