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_wmm_add_buf_bypass_txqueue(struct mwifiex_private *priv,
103					struct sk_buff *skb);
104void mwifiex_ralist_add(struct mwifiex_private *priv, const u8 *ra);
105void mwifiex_rotate_priolists(struct mwifiex_private *priv,
106			      struct mwifiex_ra_list_tbl *ra, int tid);
107
108int mwifiex_wmm_lists_empty(struct mwifiex_adapter *adapter);
109int mwifiex_bypass_txlist_empty(struct mwifiex_adapter *adapter);
110void mwifiex_wmm_process_tx(struct mwifiex_adapter *adapter);
111void mwifiex_process_bypass_tx(struct mwifiex_adapter *adapter);
112int mwifiex_is_ralist_valid(struct mwifiex_private *priv,
113			    struct mwifiex_ra_list_tbl *ra_list, int tid);
114
115u8 mwifiex_wmm_compute_drv_pkt_delay(struct mwifiex_private *priv,
116				     const struct sk_buff *skb);
117void mwifiex_wmm_init(struct mwifiex_adapter *adapter);
118
119u32 mwifiex_wmm_process_association_req(struct mwifiex_private *priv,
120					u8 **assoc_buf,
121					struct ieee_types_wmm_parameter *wmmie,
122					struct ieee80211_ht_cap *htcap);
123
124void mwifiex_wmm_setup_queue_priorities(struct mwifiex_private *priv,
125					struct ieee_types_wmm_parameter *wmm_ie);
126void mwifiex_wmm_setup_ac_downgrade(struct mwifiex_private *priv);
127int mwifiex_ret_wmm_get_status(struct mwifiex_private *priv,
128			       const struct host_cmd_ds_command *resp);
129struct mwifiex_ra_list_tbl *
130mwifiex_wmm_get_queue_raptr(struct mwifiex_private *priv, u8 tid,
131			    const u8 *ra_addr);
132u8 mwifiex_wmm_downgrade_tid(struct mwifiex_private *priv, u32 tid);
133void mwifiex_update_ralist_tx_pause(struct mwifiex_private *priv, u8 *mac,
134				    u8 tx_pause);
135void mwifiex_update_ralist_tx_pause_in_tdls_cs(struct mwifiex_private *priv,
136					       u8 *mac, u8 tx_pause);
137
138struct mwifiex_ra_list_tbl *mwifiex_wmm_get_ralist_node(struct mwifiex_private
139					*priv, u8 tid, const u8 *ra_addr);
140#endif /* !_MWIFIEX_WMM_H_ */