2 * Copyright (c) 2009 Atheros Communications Inc.
4 * Permission to use, copy, modify, and/or distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 #include <net/mac80211.h>
25 /* Common header for Atheros 802.11n base driver cores */
27 #define IEEE80211_WEP_NKID 4
29 #define WME_NUM_TID 16
30 #define WME_BA_BMP_SIZE 64
31 #define WME_MAX_BA WME_BA_BMP_SIZE
32 #define ATH_TID_MAX_BUFS (2 * WME_MAX_BA)
40 #define ATH_RSSI_DUMMY_MARKER 0x127
41 #define ATH_RSSI_LPF_LEN 10
42 #define RSSI_LPF_THRESHOLD -20
43 #define ATH_RSSI_EP_MULTIPLIER (1<<7)
44 #define ATH_EP_MUL(x, mul) ((x) * (mul))
45 #define ATH_RSSI_IN(x) (ATH_EP_MUL((x), ATH_RSSI_EP_MULTIPLIER))
46 #define ATH_LPF_RSSI(x, y, len) \
47 ((x != ATH_RSSI_DUMMY_MARKER) ? (((x) * ((len) - 1) + (y)) / (len)) : (y))
48 #define ATH_RSSI_LPF(x, y) do { \
49 if ((y) >= RSSI_LPF_THRESHOLD) \
50 x = ATH_LPF_RSSI((x), ATH_RSSI_IN((y)), ATH_RSSI_LPF_LEN); \
52 #define ATH_EP_RND(x, mul) \
53 ((((x)%(mul)) >= ((mul)/2)) ? ((x) + ((mul) - 1)) / (mul) : (x)/(mul))
55 int ath9k_cmn_padpos(__le16 frame_control);
56 int ath9k_cmn_get_hw_crypto_keytype(struct sk_buff *skb);
57 void ath9k_cmn_update_ichannel(struct ieee80211_hw *hw,
58 struct ath9k_channel *ichan);
59 struct ath9k_channel *ath9k_cmn_get_curchannel(struct ieee80211_hw *hw,
61 int ath9k_cmn_key_config(struct ath_common *common,
62 struct ieee80211_vif *vif,
63 struct ieee80211_sta *sta,
64 struct ieee80211_key_conf *key);
65 void ath9k_cmn_key_delete(struct ath_common *common,
66 struct ieee80211_key_conf *key);