drivers/staging/rtl8712/wifi.h

   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
  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
 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