tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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
23enum 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
47static 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
159static 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