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
23enum 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
29enum 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
34static 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 */
41static 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 */
54static inline int
55mwifiex_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 */
70static inline int
71mwifiex_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 */
85static inline u8
86mwifiex_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
100void mwifiex_wmm_add_buf_txqueue(struct mwifiex_private *priv,
101				 struct sk_buff *skb);
102void mwifiex_ralist_add(struct mwifiex_private *priv, const u8 *ra);
103void mwifiex_rotate_priolists(struct mwifiex_private *priv,
104			      struct mwifiex_ra_list_tbl *ra, int tid);
105
106int mwifiex_wmm_lists_empty(struct mwifiex_adapter *adapter);
107void mwifiex_wmm_process_tx(struct mwifiex_adapter *adapter);
108int mwifiex_is_ralist_valid(struct mwifiex_private *priv,
109			    struct mwifiex_ra_list_tbl *ra_list, int tid);
110
111u8 mwifiex_wmm_compute_drv_pkt_delay(struct mwifiex_private *priv,
112				     const struct sk_buff *skb);
113void mwifiex_wmm_init(struct mwifiex_adapter *adapter);
114
115u32 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
120void mwifiex_wmm_setup_queue_priorities(struct mwifiex_private *priv,
121					struct ieee_types_wmm_parameter *wmm_ie);
122void mwifiex_wmm_setup_ac_downgrade(struct mwifiex_private *priv);
123int mwifiex_ret_wmm_get_status(struct mwifiex_private *priv,
124			       const struct host_cmd_ds_command *resp);
125struct mwifiex_ra_list_tbl *
126mwifiex_wmm_get_queue_raptr(struct mwifiex_private *priv, u8 tid,
127			    const u8 *ra_addr);
128u8 mwifiex_wmm_downgrade_tid(struct mwifiex_private *priv, u32 tid);
129
130struct mwifiex_ra_list_tbl *mwifiex_wmm_get_ralist_node(struct mwifiex_private
131					*priv, u8 tid, const u8 *ra_addr);
132#endif /* !_MWIFIEX_WMM_H_ */
133