1 /* SPDX-License-Identifier: GPL-2.0 */
2 /******************************************************************************
3 *
4 * Copyright(c) 2007 - 2010 Realtek Corporation. All rights reserved.
5 *
6 * Modifications for inclusion into the Linux staging tree are
7 * Copyright(c) 2010 Larry Finger. All rights reserved.
8 *
9 * Contact information:
10 * WLAN FAE <wlanfae@realtek.com>
11 * Larry Finger <Larry.Finger@lwfinger.net>
12 *
13 ******************************************************************************/
14 #ifndef _WIFI_H_
15 #define _WIFI_H_
16
17 #include <linux/compiler.h>
18 #include <linux/ieee80211.h>
19
20 #define WLAN_HDR_A3_LEN 24
21 #define WLAN_HDR_A3_QOS_LEN 26
22
23 enum WIFI_FRAME_TYPE {
24 WIFI_QOS_DATA_TYPE = (BIT(7) | BIT(3)), /*!< QoS Data */
25 };
26
27 #define SetToDs(pbuf) ({ \
28 *(__le16 *)(pbuf) |= cpu_to_le16(IEEE80211_FCTL_TODS); \
29 })
30
31 #define GetToDs(pbuf) (((*(__le16 *)(pbuf)) & cpu_to_le16(IEEE80211_FCTL_TODS)) != 0)
32
33 #define ClearToDs(pbuf) ({ \
34 *(__le16 *)(pbuf) &= (~cpu_to_le16(IEEE80211_FCTL_TODS)); \
35 })
36
37 #define SetFrDs(pbuf) ({ \
38 *(__le16 *)(pbuf) |= cpu_to_le16(IEEE80211_FCTL_FROMDS); \
39 })
40
41 #define GetFrDs(pbuf) (((*(__le16 *)(pbuf)) & cpu_to_le16(IEEE80211_FCTL_FROMDS)) != 0)
42
43 #define ClearFrDs(pbuf) ({ \
44 *(__le16 *)(pbuf) &= (~cpu_to_le16(IEEE80211_FCTL_FROMDS)); \
45 })
46
get_tofr_ds(unsigned char * pframe)47 static inline unsigned char get_tofr_ds(unsigned char *pframe)
48 {
49 return ((GetToDs(pframe) << 1) | GetFrDs(pframe));
50 }
51
52 #define SetMFrag(pbuf) ({ \
53 *(__le16 *)(pbuf) |= cpu_to_le16(IEEE80211_FCTL_MOREFRAGS); \
54 })
55
56 #define GetMFrag(pbuf) (((*(__le16 *)(pbuf)) & cpu_to_le16(IEEE80211_FCTL_MOREFRAGS)) != 0)
57
58 #define ClearMFrag(pbuf) ({ \
59 *(__le16 *)(pbuf) &= (~cpu_to_le16(IEEE80211_FCTL_MOREFRAGS)); \
60 })
61
62 #define SetRetry(pbuf) ({ \
63 *(__le16 *)(pbuf) |= cpu_to_le16(IEEE80211_FCTL_RETRY); \
64 })
65
66 #define GetRetry(pbuf) (((*(__le16 *)(pbuf)) & cpu_to_le16(IEEE80211_FCTL_RETRY)) != 0)
67
68 #define ClearRetry(pbuf) ({ \
69 *(__le16 *)(pbuf) &= (~cpu_to_le16(IEEE80211_FCTL_RETRY)); \
70 })
71
72 #define SetPwrMgt(pbuf) ({ \
73 *(__le16 *)(pbuf) |= cpu_to_le16(IEEE80211_FCTL_PM); \
74 })
75
76 #define GetPwrMgt(pbuf) (((*(__le16 *)(pbuf)) & \
77 cpu_to_le16(IEEE80211_FCTL_PM)) != 0)
78
79 #define ClearPwrMgt(pbuf) ({ \
80 *(__le16 *)(pbuf) &= (~cpu_to_le16(IEEE80211_FCTL_PM)); \
81 })
82
83 #define SetMData(pbuf) ({ \
84 *(__le16 *)(pbuf) |= cpu_to_le16(IEEE80211_FCTL_MOREDATA); \
85 })
86
87 #define GetMData(pbuf) (((*(__le16 *)(pbuf)) & \
88 cpu_to_le16(IEEE80211_FCTL_MOREDATA)) != 0)
89
90 #define ClearMData(pbuf) ({ \
91 *(__le16 *)(pbuf) &= (~cpu_to_le16(IEEE80211_FCTL_MOREDATA)); \
92 })
93
94 #define SetPrivacy(pbuf) ({ \
95 *(__le16 *)(pbuf) |= cpu_to_le16(IEEE80211_FCTL_PROTECTED); \
96 })
97
98 #define GetPrivacy(pbuf) (((*(__le16 *)(pbuf)) & \
99 cpu_to_le16(IEEE80211_FCTL_PROTECTED)) != 0)
100
101 #define GetOrder(pbuf) (((*(__le16 *)(pbuf)) & \
102 cpu_to_le16(IEEE80211_FCTL_ORDER)) != 0)
103
104 #define GetFrameType(pbuf) (le16_to_cpu(*(__le16 *)(pbuf)) & \
105 (BIT(3) | BIT(2)))
106
107 #define SetFrameType(pbuf, type) \
108 do { \
109 *(__le16 *)(pbuf) &= cpu_to_le16(~(BIT(3) | \
110 BIT(2))); \
111 *(__le16 *)(pbuf) |= cpu_to_le16(type); \
112 } while (0)
113
114 #define GetFrameSubType(pbuf) (le16_to_cpu(*(__le16 *)(pbuf)) & \
115 (BIT(7) | BIT(6) | BIT(5) | BIT(4) | BIT(3) | \
116 BIT(2)))
117
118 #define SetFrameSubType(pbuf, type) \
119 do { \
120 *(__le16 *)(pbuf) &= cpu_to_le16(~(BIT(7) | BIT(6) | \
121 BIT(5) | BIT(4) | BIT(3) | BIT(2))); \
122 *(__le16 *)(pbuf) |= cpu_to_le16(type); \
123 } while (0)
124
125 #define GetSequence(pbuf) (le16_to_cpu(*(__le16 *)\
126 ((addr_t)(pbuf) + 22)) >> 4)
127
128 #define GetFragNum(pbuf) (le16_to_cpu(*(__le16 *)((addr_t)\
129 (pbuf) + 22)) & 0x0f)
130
131 #define SetSeqNum(pbuf, num) ({ \
132 *(__le16 *)((addr_t)(pbuf) + 22) = \
133 cpu_to_le16((le16_to_cpu(*(__le16 *)((addr_t)(pbuf) + 22)) & \
134 0x000f) | (0xfff0 & (num << 4))); \
135 })
136
137 #define SetPriority(pbuf, tid) ({ \
138 *(__le16 *)(pbuf) |= cpu_to_le16(tid & 0xf); \
139 })
140
141 #define GetPriority(pbuf) ((le16_to_cpu(*(__le16 *)(pbuf))) & 0xf)
142
143 #define SetAckpolicy(pbuf, ack) ({ \
144 *(__le16 *)(pbuf) |= cpu_to_le16((ack & 3) << 5); \
145 })
146
147 #define GetAckpolicy(pbuf) (((le16_to_cpu(*(__le16 *)pbuf)) >> 5) & 0x3)
148
149 #define GetAMsdu(pbuf) (((le16_to_cpu(*(__le16 *)pbuf)) >> 7) & 0x1)
150
151 #define GetAddr1Ptr(pbuf) ((unsigned char *)((addr_t)(pbuf) + 4))
152
153 #define GetAddr2Ptr(pbuf) ((unsigned char *)((addr_t)(pbuf) + 10))
154
155 #define GetAddr3Ptr(pbuf) ((unsigned char *)((addr_t)(pbuf) + 16))
156
157 #define GetAddr4Ptr(pbuf) ((unsigned char *)((addr_t)(pbuf) + 24))
158
get_hdr_bssid(unsigned char * pframe)159 static inline unsigned char *get_hdr_bssid(unsigned char *pframe)
160 {
161 unsigned char *sa;
162 unsigned int to_fr_ds = (GetToDs(pframe) << 1) | GetFrDs(pframe);
163
164 switch (to_fr_ds) {
165 case 0x00: /* ToDs=0, FromDs=0 */
166 sa = GetAddr3Ptr(pframe);
167 break;
168 case 0x01: /* ToDs=0, FromDs=1 */
169 sa = GetAddr2Ptr(pframe);
170 break;
171 case 0x02: /* ToDs=1, FromDs=0 */
172 sa = GetAddr1Ptr(pframe);
173 break;
174 default: /* ToDs=1, FromDs=1 */
175 sa = NULL;
176 break;
177 }
178 return sa;
179 }
180
181 /* ---------------------------------------------------------------------------
182 * Below is the fixed elements...
183 * ---------------------------------------------------------------------------
184 */
185 #define _BEACON_ITERVAL_ 2
186 #define _CAPABILITY_ 2
187 #define _TIMESTAMP_ 8
188
189 /*-----------------------------------------------------------------------------
190 * Below is the definition for WMM
191 *------------------------------------------------------------------------------
192 */
193 #define _WMM_IE_Length_ 7 /* for WMM STA */
194
195 #endif /* _WIFI_H_ */
196
197