drivers/staging/wilc1000/coreconfigurator.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 #include "coreconfigurator.h"
   3 #include "wilc_wlan_if.h"
   4 #include "wilc_wlan.h"
   5 #include <linux/errno.h>
   6 #include <linux/slab.h>
   7 #define TAG_PARAM_OFFSET        (MAC_HDR_LEN + TIME_STAMP_LEN + \
   8                                  BEACON_INTERVAL_LEN + CAP_INFO_LEN)
   9
  10 enum basic_frame_type {
  11         FRAME_TYPE_CONTROL     = 0x04,
  12         FRAME_TYPE_DATA        = 0x08,
  13         FRAME_TYPE_MANAGEMENT  = 0x00,
  14         FRAME_TYPE_RESERVED    = 0x0C,
  15         FRAME_TYPE_FORCE_32BIT = 0xFFFFFFFF
  16 };
  17
  18 enum sub_frame_type {
  19         ASSOC_REQ             = 0x00,
  20         ASSOC_RSP             = 0x10,
  21         REASSOC_REQ           = 0x20,
  22         REASSOC_RSP           = 0x30,
  23         PROBE_REQ             = 0x40,
  24         PROBE_RSP             = 0x50,
  25         BEACON                = 0x80,
  26         ATIM                  = 0x90,
  27         DISASOC               = 0xA0,
  28         AUTH                  = 0xB0,
  29         DEAUTH                = 0xC0,
  30         ACTION                = 0xD0,
  31         PS_POLL               = 0xA4,
  32         RTS                   = 0xB4,
  33         CTS                   = 0xC4,
  34         ACK                   = 0xD4,
  35         CFEND                 = 0xE4,
  36         CFEND_ACK             = 0xF4,
  37         DATA                  = 0x08,
  38         DATA_ACK              = 0x18,
  39         DATA_POLL             = 0x28,
  40         DATA_POLL_ACK         = 0x38,
  41         NULL_FRAME            = 0x48,
  42         CFACK                 = 0x58,
  43         CFPOLL                = 0x68,
  44         CFPOLL_ACK            = 0x78,
  45         QOS_DATA              = 0x88,
  46         QOS_DATA_ACK          = 0x98,
  47         QOS_DATA_POLL         = 0xA8,
  48         QOS_DATA_POLL_ACK     = 0xB8,
  49         QOS_NULL_FRAME        = 0xC8,
  50         QOS_CFPOLL            = 0xE8,
  51         QOS_CFPOLL_ACK        = 0xF8,
  52         BLOCKACK_REQ          = 0x84,
  53         BLOCKACK              = 0x94,
  54         FRAME_SUBTYPE_FORCE_32BIT  = 0xFFFFFFFF
  55 };
  56
  57 enum info_element_id {
  58         ISSID               = 0,   /* Service Set Identifier         */
  59         ISUPRATES           = 1,   /* Supported Rates                */
  60         IFHPARMS            = 2,   /* FH parameter set               */
  61         IDSPARMS            = 3,   /* DS parameter set               */
  62         ICFPARMS            = 4,   /* CF parameter set               */
  63         ITIM                = 5,   /* Traffic Information Map        */
  64         IIBPARMS            = 6,   /* IBSS parameter set             */
  65         ICOUNTRY            = 7,   /* Country element                */
  66         IEDCAPARAMS         = 12,  /* EDCA parameter set             */
  67         ITSPEC              = 13,  /* Traffic Specification          */
  68         ITCLAS              = 14,  /* Traffic Classification         */
  69         ISCHED              = 15,  /* Schedule                       */
  70         ICTEXT              = 16,  /* Challenge Text                 */
  71         IPOWERCONSTRAINT    = 32,  /* Power Constraint               */
  72         IPOWERCAPABILITY    = 33,  /* Power Capability               */
  73         ITPCREQUEST         = 34,  /* TPC Request                    */
  74         ITPCREPORT          = 35,  /* TPC Report                     */
  75         ISUPCHANNEL         = 36,  /* Supported channel list         */
  76         ICHSWANNOUNC        = 37,  /* Channel Switch Announcement    */
  77         IMEASUREMENTREQUEST = 38,  /* Measurement request            */
  78         IMEASUREMENTREPORT  = 39,  /* Measurement report             */
  79         IQUIET              = 40,  /* Quiet element Info             */
  80         IIBSSDFS            = 41,  /* IBSS DFS                       */
  81         IERPINFO            = 42,  /* ERP Information                */
  82         ITSDELAY            = 43,  /* TS Delay                       */
  83         ITCLASPROCESS       = 44,  /* TCLAS Processing               */
  84         IHTCAP              = 45,  /* HT Capabilities                */
  85         IQOSCAP             = 46,  /* QoS Capability                 */
  86         IRSNELEMENT         = 48,  /* RSN Information Element        */
  87         IEXSUPRATES         = 50,  /* Extended Supported Rates       */
  88         IEXCHSWANNOUNC      = 60,  /* Extended Ch Switch Announcement*/
  89         IHTOPERATION        = 61,  /* HT Information                 */
  90         ISECCHOFF           = 62,  /* Secondary Channel Offeset      */
  91         I2040COEX           = 72,  /* 20/40 Coexistence IE           */
  92         I2040INTOLCHREPORT  = 73,  /* 20/40 Intolerant channel report*/
  93         IOBSSSCAN           = 74,  /* OBSS Scan parameters           */
  94         IEXTCAP             = 127, /* Extended capability            */
  95         IWMM                = 221, /* WMM parameters                 */
  96         IWPAELEMENT         = 221, /* WPA Information Element        */
  97         INFOELEM_ID_FORCE_32BIT  = 0xFFFFFFFF
  98 };
  99
 100 static inline u16 get_beacon_period(u8 *data)
 101 {
 102         u16 bcn_per;
 103
 104         bcn_per  = data[0];
 105         bcn_per |= (data[1] << 8);
 106
 107         return bcn_per;
 108 }
 109
 110 static inline u32 get_beacon_timestamp_lo(u8 *data)
 111 {
 112         u32 time_stamp = 0;
 113         u32 index    = MAC_HDR_LEN;
 114
 115         time_stamp |= data[index++];
 116         time_stamp |= (data[index++] << 8);
 117         time_stamp |= (data[index++] << 16);
 118         time_stamp |= (data[index]   << 24);
 119
 120         return time_stamp;
 121 }
 122
 123 static inline u32 get_beacon_timestamp_hi(u8 *data)
 124 {
 125         u32 time_stamp = 0;
 126         u32 index    = (MAC_HDR_LEN + 4);
 127
 128         time_stamp |= data[index++];
 129         time_stamp |= (data[index++] << 8);
 130         time_stamp |= (data[index++] << 16);
 131         time_stamp |= (data[index]   << 24);
 132
 133         return time_stamp;
 134 }
 135
 136 static inline enum sub_frame_type get_sub_type(u8 *header)
 137 {
 138         return ((enum sub_frame_type)(header[0] & 0xFC));
 139 }
 140
 141 static inline u8 get_to_ds(u8 *header)
 142 {
 143         return (header[1] & 0x01);
 144 }
 145
 146 static inline u8 get_from_ds(u8 *header)
 147 {
 148         return ((header[1] & 0x02) >> 1);
 149 }
 150
 151 static inline void get_address1(u8 *pu8msa, u8 *addr)
 152 {
 153         memcpy(addr, pu8msa + 4, 6);
 154 }
 155
 156 static inline void get_address2(u8 *pu8msa, u8 *addr)
 157 {
 158         memcpy(addr, pu8msa + 10, 6);
 159 }
 160
 161 static inline void get_address3(u8 *pu8msa, u8 *addr)
 162 {
 163         memcpy(addr, pu8msa + 16, 6);
 164 }
 165
 166 static inline void get_BSSID(u8 *data, u8 *bssid)
 167 {
 168         if (get_from_ds(data) == 1)
 169                 get_address2(data, bssid);
 170         else if (get_to_ds(data) == 1)
 171                 get_address1(data, bssid);
 172         else
 173                 get_address3(data, bssid);
 174 }
 175
 176 static inline void get_ssid(u8 *data, u8 *ssid, u8 *p_ssid_len)
 177 {
 178         u8 len = 0;
 179         u8 i   = 0;
 180         u8 j   = 0;
 181
 182         len = data[TAG_PARAM_OFFSET + 1];
 183         j   = TAG_PARAM_OFFSET + 2;
 184
 185         if (len >= MAX_SSID_LEN)
 186                 len = 0;
 187
 188         for (i = 0; i < len; i++, j++)
 189                 ssid[i] = data[j];
 190
 191         ssid[len] = '\0';
 192
 193         *p_ssid_len = len;
 194 }
 195
 196 static inline u16 get_cap_info(u8 *data)
 197 {
 198         u16 cap_info = 0;
 199         u16 index    = MAC_HDR_LEN;
 200         enum sub_frame_type st;
 201
 202         st = get_sub_type(data);
 203
 204         if ((st == BEACON) || (st == PROBE_RSP))
 205                 index += TIME_STAMP_LEN + BEACON_INTERVAL_LEN;
 206
 207         cap_info  = data[index];
 208         cap_info |= (data[index + 1] << 8);
 209
 210         return cap_info;
 211 }
 212
 213 static inline u16 get_assoc_resp_cap_info(u8 *data)
 214 {
 215         u16 cap_info;
 216
 217         cap_info  = data[0];
 218         cap_info |= (data[1] << 8);
 219
 220         return cap_info;
 221 }
 222
 223 static inline u16 get_asoc_status(u8 *data)
 224 {
 225         u16 asoc_status;
 226
 227         asoc_status = data[3];
 228         return (asoc_status << 8) | data[2];
 229 }
 230
 231 static inline u16 get_asoc_id(u8 *data)
 232 {
 233         u16 asoc_id;
 234
 235         asoc_id  = data[4];
 236         asoc_id |= (data[5] << 8);
 237
 238         return asoc_id;
 239 }
 240
 241 static u8 *get_tim_elm(u8 *pu8msa, u16 rx_len, u16 tag_param_offset)
 242 {
 243         u16 index;
 244
 245         index = tag_param_offset;
 246
 247         while (index < (rx_len - FCS_LEN)) {
 248                 if (pu8msa[index] == ITIM)
 249                         return &pu8msa[index];
 250                 index += (IE_HDR_LEN + pu8msa[index + 1]);
 251         }
 252
 253         return NULL;
 254 }
 255
 256 static u8 get_current_channel_802_11n(u8 *pu8msa, u16 rx_len)
 257 {
 258         u16 index;
 259
 260         index = TAG_PARAM_OFFSET;
 261         while (index < (rx_len - FCS_LEN)) {
 262                 if (pu8msa[index] == IDSPARMS)
 263                         return pu8msa[index + 2];
 264                 index += pu8msa[index + 1] + IE_HDR_LEN;
 265         }
 266
 267         return 0;
 268 }
 269
 270 s32 wilc_parse_network_info(u8 *msg_buffer,
 271                             struct network_info **ret_network_info)
 272 {
 273         struct network_info *network_info = NULL;
 274         u8 msg_type = 0;
 275         u8 msg_id = 0;
 276         u16 msg_len = 0;
 277
 278         u16 wid_id = (u16)WID_NIL;
 279         u16 wid_len  = 0;
 280         u8 *wid_val = NULL;
 281
 282         msg_type = msg_buffer[0];
 283
 284         if ('N' != msg_type)
 285                 return -EFAULT;
 286
 287         msg_id = msg_buffer[1];
 288         msg_len = MAKE_WORD16(msg_buffer[2], msg_buffer[3]);
 289         wid_id = MAKE_WORD16(msg_buffer[4], msg_buffer[5]);
 290         wid_len = MAKE_WORD16(msg_buffer[6], msg_buffer[7]);
 291         wid_val = &msg_buffer[8];
 292
 293         {
 294                 u8 *msa = NULL;
 295                 u16 rx_len = 0;
 296                 u8 *tim_elm = NULL;
 297                 u8 *ies = NULL;
 298                 u16 ies_len = 0;
 299                 u8 index = 0;
 300                 u32 tsf_lo;
 301                 u32 tsf_hi;
 302
 303                 network_info = kzalloc(sizeof(*network_info), GFP_KERNEL);
 304                 if (!network_info)
 305                         return -ENOMEM;
 306
 307                 network_info->rssi = wid_val[0];
 308
 309                 msa = &wid_val[1];
 310
 311                 rx_len = wid_len - 1;
 312                 network_info->cap_info = get_cap_info(msa);
 313                 network_info->tsf_lo = get_beacon_timestamp_lo(msa);
 314
 315                 tsf_lo = get_beacon_timestamp_lo(msa);
 316                 tsf_hi = get_beacon_timestamp_hi(msa);
 317
 318                 network_info->tsf_hi = tsf_lo | ((u64)tsf_hi << 32);
 319
 320                 get_ssid(msa, network_info->ssid, &network_info->ssid_len);
 321                 get_BSSID(msa, network_info->bssid);
 322
 323                 network_info->ch = get_current_channel_802_11n(msa,
 324                                                         rx_len + FCS_LEN);
 325
 326                 index = MAC_HDR_LEN + TIME_STAMP_LEN;
 327
 328                 network_info->beacon_period = get_beacon_period(msa + index);
 329
 330                 index += BEACON_INTERVAL_LEN + CAP_INFO_LEN;
 331
 332                 tim_elm = get_tim_elm(msa, rx_len + FCS_LEN, index);
 333                 if (tim_elm)
 334                         network_info->dtim_period = tim_elm[3];
 335                 ies = &msa[TAG_PARAM_OFFSET];
 336                 ies_len = rx_len - TAG_PARAM_OFFSET;
 337
 338                 if (ies_len > 0) {
 339                         network_info->ies = kmemdup(ies, ies_len, GFP_KERNEL);
 340                         if (!network_info->ies) {
 341                                 kfree(network_info);
 342                                 return -ENOMEM;
 343                         }
 344                 }
 345                 network_info->ies_len = ies_len;
 346         }
 347
 348         *ret_network_info = network_info;
 349
 350         return 0;
 351 }
 352
 353 s32 wilc_parse_assoc_resp_info(u8 *buffer, u32 buffer_len,
 354                                struct connect_resp_info **ret_connect_resp_info)
 355 {
 356         struct connect_resp_info *connect_resp_info = NULL;
 357         u16 assoc_resp_len = 0;
 358         u8 *ies = NULL;
 359         u16 ies_len = 0;
 360
 361         connect_resp_info = kzalloc(sizeof(*connect_resp_info), GFP_KERNEL);
 362         if (!connect_resp_info)
 363                 return -ENOMEM;
 364
 365         assoc_resp_len = (u16)buffer_len;
 366
 367         connect_resp_info->status = get_asoc_status(buffer);
 368         if (connect_resp_info->status == SUCCESSFUL_STATUSCODE) {
 369                 connect_resp_info->capability = get_assoc_resp_cap_info(buffer);
 370                 connect_resp_info->assoc_id = get_asoc_id(buffer);
 371
 372                 ies = &buffer[CAP_INFO_LEN + STATUS_CODE_LEN + AID_LEN];
 373                 ies_len = assoc_resp_len - (CAP_INFO_LEN + STATUS_CODE_LEN +
 374                                             AID_LEN);
 375
 376                 connect_resp_info->ies = kmemdup(ies, ies_len, GFP_KERNEL);
 377                 if (!connect_resp_info->ies) {
 378                         kfree(connect_resp_info);
 379                         return -ENOMEM;
 380                 }
 381
 382                 connect_resp_info->ies_len = ies_len;
 383         }
 384
 385         *ret_connect_resp_info = connect_resp_info;
 386
 387         return 0;
 388 }