rtt.cpp

   1 #include <stdint.h>
   2 #include <fcntl.h>
   3 #include <sys/socket.h>
   4 #include <netlink/genl/genl.h>
   5 #include <netlink/genl/family.h>
   6 #include <netlink/genl/ctrl.h>
   7 #include <linux/rtnetlink.h>
   8 #include <netpacket/packet.h>
   9 #include <linux/filter.h>
  10 #include <linux/errqueue.h>
  11
  12 #include <linux/pkt_sched.h>
  13 #include <netlink/object-api.h>
  14 #include <netlink/netlink.h>
  15 #include <netlink/socket.h>
  16
  17 #include <string>
  18 #include "nl80211_copy.h"
  19
  20 #include "sync.h"
  21
  22 #include <utils/Log.h>
  23
  24 #include "wifi_hal.h"
  25 #include "common.h"
  26 #include "cpp_bindings.h"
  27 using namespace std;
  28
  29 typedef enum {
  30     SLSI_RTT_ATTRIBUTE_TARGET_CNT = 0,
  31     SLSI_RTT_ATTRIBUTE_TARGET_INFO,
  32     SLSI_RTT_ATTRIBUTE_TARGET_MAC,
  33     SLSI_RTT_ATTRIBUTE_TARGET_TYPE,
  34     SLSI_RTT_ATTRIBUTE_TARGET_PEER,
  35     SLSI_RTT_ATTRIBUTE_TARGET_CHAN_FREQ,
  36     SLSI_RTT_ATTRIBUTE_TARGET_PERIOD,
  37     SLSI_RTT_ATTRIBUTE_TARGET_NUM_BURST,
  38     SLSI_RTT_ATTRIBUTE_TARGET_NUM_FTM_BURST,
  39     SLSI_RTT_ATTRIBUTE_TARGET_NUM_RETRY_FTM,
  40     SLSI_RTT_ATTRIBUTE_TARGET_NUM_RETRY_FTMR,
  41     SLSI_RTT_ATTRIBUTE_TARGET_LCI,
  42     SLSI_RTT_ATTRIBUTE_TARGET_LCR,
  43     SLSI_RTT_ATTRIBUTE_TARGET_BURST_DURATION,
  44     SLSI_RTT_ATTRIBUTE_TARGET_PREAMBLE,
  45     SLSI_RTT_ATTRIBUTE_TARGET_BW,
  46     SLSI_RTT_ATTRIBUTE_RESULTS_COMPLETE = 30,
  47     SLSI_RTT_ATTRIBUTE_RESULTS_PER_TARGET,
  48     SLSI_RTT_ATTRIBUTE_RESULT_CNT,
  49     SLSI_RTT_ATTRIBUTE_RESULT,
  50     SLSI_RTT_ATTRIBUTE_TARGET_ID
  51 } SLSI_RTT_ATTRIBUTE;
  52
  53 enum slsi_rtt_event_attributes {
  54         SLSI_RTT_EVENT_ATTR_ADDR     = 0,
  55         SLSI_RTT_EVENT_ATTR_BURST_NUM,
  56         SLSI_RTT_EVENT_ATTR_MEASUREMENT_NUM,
  57         SLSI_RTT_EVENT_ATTR_SUCCESS_NUM,
  58         SLSI_RTT_EVENT_ATTR_NUM_PER_BURST_PEER,
  59         SLSI_RTT_EVENT_ATTR_STATUS,
  60         SLSI_RTT_EVENT_ATTR_RETRY_AFTER_DURATION,
  61         SLSI_RTT_EVENT_ATTR_TYPE,
  62         SLSI_RTT_EVENT_ATTR_RSSI,
  63         SLSI_RTT_EVENT_ATTR_RSSI_SPREAD,
  64         SLSI_RTT_EVENT_ATTR_TX_PREAMBLE,
  65         SLSI_RTT_EVENT_ATTR_TX_NSS,
  66         SLSI_RTT_EVENT_ATTR_TX_BW,
  67         SLSI_RTT_EVENT_ATTR_TX_MCS,
  68         SLSI_RTT_EVENT_ATTR_TX_RATE,
  69         SLSI_RTT_EVENT_ATTR_RX_PREAMBLE,
  70         SLSI_RTT_EVENT_ATTR_RX_NSS,
  71         SLSI_RTT_EVENT_ATTR_RX_BW,
  72         SLSI_RTT_EVENT_ATTR_RX_MCS,
  73         SLSI_RTT_EVENT_ATTR_RX_RATE,
  74         SLSI_RTT_EVENT_ATTR_RTT,
  75         SLSI_RTT_EVENT_ATTR_RTT_SD,
  76         SLSI_RTT_EVENT_ATTR_RTT_SPREAD,
  77         SLSI_RTT_EVENT_ATTR_DISTANCE_MM,
  78         SLSI_RTT_EVENT_ATTR_DISTANCE_SD_MM,
  79         SLSI_RTT_EVENT_ATTR_DISTANCE_SPREAD_MM,
  80         SLSI_RTT_EVENT_ATTR_TIMESTAMP_US,
  81         SLSI_RTT_EVENT_ATTR_BURST_DURATION_MSN,
  82         SLSI_RTT_EVENT_ATTR_NEGOTIATED_BURST_NUM,
  83         SLSI_RTT_EVENT_ATTR_LCI,
  84         SLSI_RTT_EVENT_ATTR_LCR
  85 };
  86
  87 struct dot11_rm_ie {
  88     u8 id;
  89     u8 len;
  90     u8 token;
  91     u8 mode;
  92     u8 type;
  93 } __attribute__ ((packed));
  94 typedef struct dot11_rm_ie dot11_rm_ie_t;
  95 typedef struct strmap_entry {
  96     int                 id;
  97     string              text;
  98 } strmap_entry_t;
  99
 100 static const strmap_entry_t err_info[] = {
 101     {RTT_STATUS_SUCCESS, string("Success")},
 102     {RTT_STATUS_FAILURE, string("Failure")},
 103     {RTT_STATUS_FAIL_NO_RSP, string("No reponse")},
 104     {RTT_STATUS_FAIL_INVALID_TS, string("Invalid Timestamp")},
 105     {RTT_STATUS_FAIL_PROTOCOL, string("Protocol error")},
 106     {RTT_STATUS_FAIL_REJECTED, string("Rejected")},
 107     {RTT_STATUS_FAIL_NOT_SCHEDULED_YET, string("not scheduled")},
 108     {RTT_STATUS_FAIL_SCHEDULE,  string("schedule failed")},
 109     {RTT_STATUS_FAIL_TM_TIMEOUT, string("timeout")},
 110     {RTT_STATUS_FAIL_AP_ON_DIFF_CHANNEL, string("AP is on difference channel")},
 111     {RTT_STATUS_FAIL_NO_CAPABILITY, string("no capability")},
 112     {RTT_STATUS_FAIL_BUSY_TRY_LATER, string("busy and try later")},
 113     {RTT_STATUS_ABORTED, string("aborted")}
 114 };
 115 /*static const string get_err_info(int status)
 116 {
 117     int i;
 118     const strmap_entry_t *p_entry;
 119     int num_entries = sizeof(err_info)/ sizeof(err_info[0]);
 120     * scan thru the table till end
 121     p_entry = err_info;
 122     for (i = 0; i < (int) num_entries; i++)
 123     {
 124         if (p_entry->id == status)
 125             return p_entry->text;
 126         p_entry++;              * next entry
 127     }
 128     return "unknown error";                     * not found
 129 }*/
 130 class RttCommand : public WifiCommand
 131 {
 132     int rtt_id;
 133     unsigned numTargetDevice;
 134     int mCompleted;
 135     int currentIdx;
 136     int totalCnt;
 137     static const int MAX_RESULTS = 1024;
 138     wifi_rtt_result *rttResults[MAX_RESULTS];
 139     wifi_rtt_config *rttParams;
 140     wifi_rtt_event_handler rttHandler;
 141 public:
 142     RttCommand(wifi_interface_handle iface, int id, unsigned num_rtt_config,
 143             wifi_rtt_config rtt_config[], wifi_rtt_event_handler handler)
 144         : WifiCommand(iface, id), rtt_id(id), numTargetDevice(num_rtt_config), rttParams(rtt_config),
 145         rttHandler(handler)
 146     {
 147         memset(rttResults, 0, sizeof(rttResults));
 148         currentIdx = 0;
 149         mCompleted = 0;
 150         totalCnt = 0;
 151     }
 152
 153     RttCommand(wifi_interface_handle iface, int id)
 154         : WifiCommand(iface, id), rtt_id(id), rttParams(NULL)
 155     {
 156         rttHandler.on_rtt_results = NULL;
 157         memset(rttResults, 0, sizeof(rttResults));
 158         currentIdx = 0;
 159         mCompleted = 0;
 160         totalCnt = 0;
 161         numTargetDevice = 0;
 162     }
 163  int createSetupRequest(WifiRequest& request) {
 164         int result = request.create(GOOGLE_OUI, SLSI_NL80211_VENDOR_SUBCMD_RTT_RANGE_START);
 165         if (result < 0) {
 166             return result;
 167         }
 168         nlattr *data = request.attr_start(NL80211_ATTR_VENDOR_DATA);
 169         result = request.put_u16(SLSI_RTT_ATTRIBUTE_TARGET_ID, rtt_id);
 170         if (result < 0) {
 171             return result;
 172         }
 173         result = request.put_u8(SLSI_RTT_ATTRIBUTE_TARGET_CNT, numTargetDevice);
 174                 ALOGI("numTargetDevice %d\n",numTargetDevice);
 175         if (result < 0) {
 176             return result;
 177         }
 178         nlattr *rtt_config = request.attr_start(SLSI_RTT_ATTRIBUTE_TARGET_INFO);
 179         for (unsigned i = 0; i < numTargetDevice; i++) {
 180             nlattr *attr2 = request.attr_start(i);
 181
 182             result = request.put_addr(SLSI_RTT_ATTRIBUTE_TARGET_MAC, rttParams[i].addr);
 183                         ALOGI("mac_addr %p\n",rttParams[i].addr);
 184             if (result < 0) {
 185                 return result;
 186             }
 187
 188             result = request.put_u16(SLSI_RTT_ATTRIBUTE_TARGET_TYPE, rttParams[i].type);
 189                         ALOGI("\trtt_type %d\n",rttParams[i].type);
 190             if (result < 0) {
 191                 return result;
 192             }
 193
 194              result = request.put_u16(SLSI_RTT_ATTRIBUTE_TARGET_PEER, rttParams[i].peer);
 195                         ALOGI("\trtt_peer %d\n",rttParams[i].peer);
 196             if (result < 0) {
 197                 return result;
 198                 }
 199                 result = request.put_u16(SLSI_RTT_ATTRIBUTE_TARGET_CHAN_FREQ, rttParams[i].channel.center_freq);
 200                         ALOGI("\trtt_ primary channel_freq %d\n",rttParams[i].channel.center_freq);
 201             if (result < 0) {
 202                 return result;
 203             }
 204             result = request.put_u8(SLSI_RTT_ATTRIBUTE_TARGET_NUM_BURST, rttParams[i].num_burst);
 205                         ALOGI("\tnum_burst %d\n",rttParams[i].num_burst);
 206             if (result < 0) {
 207                 return result;
 208             }
 209
 210             result = request.put_u8(SLSI_RTT_ATTRIBUTE_TARGET_NUM_FTM_BURST,
 211                     rttParams[i].num_frames_per_burst);
 212                         ALOGI("\tnum_frames_per_burst %d\n",rttParams[i].num_frames_per_burst);
 213             if (result < 0) {
 214                 return result;
 215             }
 216
 217             result = request.put_u8(SLSI_RTT_ATTRIBUTE_TARGET_NUM_RETRY_FTM,
 218                     rttParams[i].num_retries_per_rtt_frame);
 219                         ALOGI("\tnum_retries_per_rtt_frame %d\n",rttParams[i].num_retries_per_rtt_frame);
 220             if (result < 0) {
 221                 return result;
 222             }
 223
 224             result = request.put_u8(SLSI_RTT_ATTRIBUTE_TARGET_NUM_RETRY_FTMR,
 225                     rttParams[i].num_retries_per_ftmr);
 226                         ALOGI("\tnum_retries_per_ftmr %d\n",rttParams[i].num_retries_per_ftmr);
 227             if (result < 0) {
 228                 return result;
 229             }
 230
 231             result = request.put_u8(SLSI_RTT_ATTRIBUTE_TARGET_PERIOD,
 232                     rttParams[i].burst_period);
 233                         ALOGI("\tburst_period %d\n",rttParams[i].burst_period);
 234             if (result < 0) {
 235                 return result;
 236             }
 237
 238             result = request.put_u8(SLSI_RTT_ATTRIBUTE_TARGET_BURST_DURATION,
 239                     rttParams[i].burst_duration);
 240                         ALOGI("\tburst_duration %d\n",rttParams[i].burst_duration);
 241             if (result < 0) {
 242                 return result;
 243             }
 244
 245             result = request.put_u16(SLSI_RTT_ATTRIBUTE_TARGET_LCI,
 246                     rttParams[i].LCI_request);
 247                         ALOGI("\tLCI_request %d\n",rttParams[i].LCI_request);
 248             if (result < 0) {
 249                 return result;
 250             }
 251
 252             result = request.put_u16(SLSI_RTT_ATTRIBUTE_TARGET_LCR,
 253                     rttParams[i].LCR_request);
 254                         ALOGI("\tLCR_ request%d\n",rttParams[i].LCR_request);
 255             if (result < 0) {
 256                 return result;
 257             }
 258
 259             result = request.put_u16(SLSI_RTT_ATTRIBUTE_TARGET_BW,
 260                     rttParams[i].bw);
 261                         ALOGI("\tBW%d\n",rttParams[i].bw);
 262             if (result < 0) {
 263                 return result;
 264             }
 265
 266             result = request.put_u16(SLSI_RTT_ATTRIBUTE_TARGET_PREAMBLE,
 267                     rttParams[i].preamble);
 268                         ALOGI("\tpreamble%d\n",rttParams[i].preamble);
 269             if (result < 0) {
 270                 return result;
 271             }
 272             request.attr_end(attr2);
 273         }
 274         ALOGE("setup request created");
 275         request.attr_end(rtt_config);
 276         request.attr_end(data);
 277         return WIFI_SUCCESS;
 278     }
 279
 280     int createTeardownRequest(WifiRequest& request, unsigned num_devices, mac_addr addr[]) {
 281         int result = request.create(GOOGLE_OUI, SLSI_NL80211_VENDOR_SUBCMD_RTT_RANGE_CANCEL);
 282         if (result < 0) {
 283             return result;
 284         }
 285         nlattr *data = request.attr_start(NL80211_ATTR_VENDOR_DATA);
 286          request.put_u16(SLSI_RTT_ATTRIBUTE_TARGET_ID, rtt_id);
 287         request.put_u16(SLSI_RTT_ATTRIBUTE_TARGET_CNT, num_devices);
 288         for(unsigned i = 0; i < num_devices; i++) {
 289             result = request.put_addr(SLSI_RTT_ATTRIBUTE_TARGET_MAC, addr[i]);
 290             if (result < 0) {
 291                 return result;
 292             }
 293         }
 294         request.attr_end(data);
 295         return result;
 296     }
 297     int start() {
 298         WifiRequest request(familyId(), ifaceId());
 299         int result = createSetupRequest(request);
 300         if (result != WIFI_SUCCESS) {
 301             ALOGE("failed to create setup request; result = %d", result);
 302             return result;
 303         }
 304
 305         result = requestResponse(request);
 306         if (result != WIFI_SUCCESS) {
 307             ALOGE("failed to configure RTT setup; result = %d", result);
 308             return result;
 309         }
 310         registerVendorHandler(GOOGLE_OUI, SLSI_RTT_RESULT_EVENT);
 311         registerVendorHandler(GOOGLE_OUI, SLSI_RTT_EVENT_COMPLETE);
 312         return result;
 313     }
 314
 315     virtual int cancel() {
 316         ALOGD("Stopping RTT");
 317
 318         WifiRequest request(familyId(), ifaceId());
 319         int result = createTeardownRequest(request, 0, NULL);
 320         if (result != WIFI_SUCCESS) {
 321             ALOGE("failed to create stop request; result = %d", result);
 322         } else {
 323             result = requestResponse(request);
 324             if (result != WIFI_SUCCESS) {
 325                 ALOGE("failed to stop scan; result = %d", result);
 326             }
 327         }
 328         ALOGE("RTT stopped");
 329                 /*This needs to be check */
 330           unregisterVendorHandler(GOOGLE_OUI, SLSI_RTT_RESULT_EVENT);
 331         unregisterVendorHandler(GOOGLE_OUI, SLSI_RTT_EVENT_COMPLETE);
 332         return WIFI_SUCCESS;
 333     }
 334
 335     int cancel_specific(unsigned num_devices, mac_addr addr[]) {
 336         ALOGE("Stopping RTT specific");
 337
 338         WifiRequest request(familyId(), ifaceId());
 339         int result = createTeardownRequest(request, num_devices, addr);
 340         if (result != WIFI_SUCCESS) {
 341             ALOGE("failed to create stop request; result = %d", result);
 342         } else {
 343             result = requestResponse(request);
 344             if (result != WIFI_SUCCESS) {
 345                 ALOGE("failed to stop RTT; result = %d", result);
 346             }
 347         }
 348         ALOGE("Specific RTT stopped");
 349           /*This needs to be check */
 350           unregisterVendorHandler(GOOGLE_OUI, SLSI_RTT_RESULT_EVENT);
 351         unregisterVendorHandler(GOOGLE_OUI, SLSI_RTT_EVENT_COMPLETE);
 352         return WIFI_SUCCESS;
 353     }
 354
 355     virtual int handleResponse(WifiEvent& reply) {
 356         /* Nothing to do on response! */
 357         return NL_SKIP;
 358     }
 359
 360     virtual int handleEvent(WifiEvent& event) {
 361         currentIdx=0;
 362         nlattr *vendor_data = event.get_attribute(NL80211_ATTR_VENDOR_DATA);
 363         int event_id = event.get_vendor_subcmd();
 364         ALOGD("Got an RTT event with id:%d\n",event_id);
 365         if(event_id == SLSI_RTT_EVENT_COMPLETE) {
 366              ALOGD("RTT event complete\n");
 367              unregisterVendorHandler(GOOGLE_OUI, SLSI_RTT_RESULT_EVENT);
 368              WifiCommand *cmd = wifi_unregister_cmd(wifiHandle(), id());
 369               if (cmd)
 370                   cmd->releaseRef();
 371         } else if (event_id == SLSI_RTT_RESULT_EVENT) {
 372              int result_cnt = 0;
 373              int rtt_id = 0;
 374              ALOGD("RTT result event\n");
 375              for (nl_iterator it(vendor_data); it.has_next(); it.next()) {
 376                     if (it.get_type() == SLSI_RTT_ATTRIBUTE_RESULT_CNT) {
 377                               result_cnt = it.get_u16();
 378                               ALOGD("RTT results count : %d\n", result_cnt);
 379                      }  else if (it.get_type() == SLSI_RTT_ATTRIBUTE_TARGET_ID) {
 380                               rtt_id = it.get_u16();
 381                               ALOGD("RTT target id : %d\n", rtt_id);
 382                      } else if (it.get_type() == SLSI_RTT_ATTRIBUTE_RESULT) {
 383                               ALOGD("RTT result attribute : %d\n", SLSI_RTT_ATTRIBUTE_RESULT);
 384                               rttResults[currentIdx] =  (wifi_rtt_result *)malloc(sizeof(wifi_rtt_result));
 385                                wifi_rtt_result *rtt_result = rttResults[currentIdx];
 386                                if (rtt_result == NULL) {
 387                                          ALOGE("failed to allocate the wifi_rtt_result\n");
 388                                          unregisterVendorHandler(GOOGLE_OUI, SLSI_RTT_RESULT_EVENT);
 389                                          break;
 390                                 }
 391                                for(nl_iterator nl_nested_itr((struct nlattr *)it.get()); nl_nested_itr.has_next(); nl_nested_itr.next()) {
 392                                   if (nl_nested_itr.get_type() == SLSI_RTT_EVENT_ATTR_ADDR) {
 393                                          memcpy(rtt_result->addr, nl_nested_itr.get_data(), nl_nested_itr.get_len());
 394                                   } else if (nl_nested_itr.get_type() == SLSI_RTT_EVENT_ATTR_BURST_NUM) {
 395                                          rtt_result->burst_num = (unsigned)nl_nested_itr.get_u8();
 396                                   } else if (nl_nested_itr.get_type() == SLSI_RTT_EVENT_ATTR_MEASUREMENT_NUM) {
 397                                          rtt_result->measurement_number = (unsigned)nl_nested_itr.get_u8();
 398                                   } else if (nl_nested_itr.get_type() == SLSI_RTT_EVENT_ATTR_SUCCESS_NUM) {
 399                                          rtt_result->success_number = (unsigned)nl_nested_itr.get_u8();
 400                                   } else if (nl_nested_itr.get_type() == SLSI_RTT_EVENT_ATTR_NUM_PER_BURST_PEER) {
 401                                          rtt_result->number_per_burst_peer = (unsigned char)nl_nested_itr.get_u8();
 402                                   } else if (nl_nested_itr.get_type() == SLSI_RTT_EVENT_ATTR_STATUS) {
 403                                          rtt_result->status = (wifi_rtt_status)nl_nested_itr.get_u16();
 404                                   } else if (nl_nested_itr.get_type() == SLSI_RTT_EVENT_ATTR_RETRY_AFTER_DURATION) {
 405                                          rtt_result->retry_after_duration = (unsigned char)nl_nested_itr.get_u8();
 406                                   } else if (nl_nested_itr.get_type() == SLSI_RTT_EVENT_ATTR_TYPE) {
 407                                          rtt_result->type = (wifi_rtt_type)nl_nested_itr.get_u16();
 408                                   } else if (nl_nested_itr.get_type() == SLSI_RTT_EVENT_ATTR_RSSI) {
 409                                          rtt_result->rssi = (wifi_rssi)nl_nested_itr.get_u16();
 410                                   } else if (nl_nested_itr.get_type() == SLSI_RTT_EVENT_ATTR_RSSI_SPREAD) {
 411                                          rtt_result->rssi_spread= (wifi_rssi)nl_nested_itr.get_u16();
 412                                   } else if (nl_nested_itr.get_type() == SLSI_RTT_EVENT_ATTR_TX_PREAMBLE) {
 413                                          rtt_result->tx_rate.preamble = nl_nested_itr.get_u32();
 414                                   } else if (nl_nested_itr.get_type() == SLSI_RTT_EVENT_ATTR_TX_NSS) {
 415                                          rtt_result->tx_rate.nss = nl_nested_itr.get_u32();
 416                                   } else if (nl_nested_itr.get_type() == SLSI_RTT_EVENT_ATTR_TX_BW) {
 417                                          rtt_result->tx_rate.bw = nl_nested_itr.get_u32();
 418                                   } else if (nl_nested_itr.get_type() == SLSI_RTT_EVENT_ATTR_TX_MCS) {
 419                                          rtt_result->tx_rate.rateMcsIdx = nl_nested_itr.get_u32();
 420                                   } else if (nl_nested_itr.get_type() == SLSI_RTT_EVENT_ATTR_TX_RATE) {
 421                                          rtt_result->tx_rate.bitrate = nl_nested_itr.get_u32();
 422                                   }else if (nl_nested_itr.get_type() == SLSI_RTT_EVENT_ATTR_RX_PREAMBLE) {
 423                                          rtt_result->rx_rate.preamble = nl_nested_itr.get_u32();
 424                                   } else if (nl_nested_itr.get_type() == SLSI_RTT_EVENT_ATTR_RX_NSS) {
 425                                          rtt_result->rx_rate.nss = nl_nested_itr.get_u32();
 426                                   } else if (nl_nested_itr.get_type() == SLSI_RTT_EVENT_ATTR_RX_BW) {
 427                                          rtt_result->rx_rate.bw = nl_nested_itr.get_u32();
 428                                   } else if (nl_nested_itr.get_type() == SLSI_RTT_EVENT_ATTR_RX_MCS) {
 429                                          rtt_result->rx_rate.rateMcsIdx = nl_nested_itr.get_u32();
 430                                   } else if (nl_nested_itr.get_type() == SLSI_RTT_EVENT_ATTR_RX_RATE) {
 431                                          rtt_result->rx_rate.bitrate = nl_nested_itr.get_u32();
 432                                   }  else if (nl_nested_itr.get_type() == SLSI_RTT_EVENT_ATTR_RTT) {
 433                                          rtt_result->rtt = (wifi_timespan)nl_nested_itr.get_u32();
 434                                   } else if (nl_nested_itr.get_type() == SLSI_RTT_EVENT_ATTR_RTT_SD) {
 435                                          rtt_result->rtt_sd = (wifi_timespan)nl_nested_itr.get_u16();
 436                                   } else if (nl_nested_itr.get_type() == SLSI_RTT_EVENT_ATTR_RTT_SPREAD) {
 437                                          rtt_result->rtt_spread = (wifi_timespan)nl_nested_itr.get_u16();
 438                                   } else if (nl_nested_itr.get_type() == SLSI_RTT_EVENT_ATTR_DISTANCE_MM) {
 439                                          rtt_result->distance_mm = nl_nested_itr.get_u32();
 440                                   } else if (nl_nested_itr.get_type() == SLSI_RTT_EVENT_ATTR_DISTANCE_SD_MM) {
 441                                          rtt_result->distance_sd_mm = nl_nested_itr.get_u32();
 442                                   } else if (nl_nested_itr.get_type() == SLSI_RTT_EVENT_ATTR_DISTANCE_SPREAD_MM) {
 443                                          rtt_result->distance_spread_mm = nl_nested_itr.get_u32();
 444                                   } else if (nl_nested_itr.get_type() == SLSI_RTT_EVENT_ATTR_TIMESTAMP_US) {
 445                                          rtt_result->ts = (wifi_timestamp)nl_nested_itr.get_u32();
 446                                   } else if (nl_nested_itr.get_type() == SLSI_RTT_EVENT_ATTR_BURST_DURATION_MSN) {
 447                                          rtt_result->burst_duration = nl_nested_itr.get_u8();
 448                                   } else if (nl_nested_itr.get_type() == SLSI_RTT_EVENT_ATTR_NEGOTIATED_BURST_NUM) {
 449                                          rtt_result->negotiated_burst_num = nl_nested_itr.get_u8();
 450                                   } else if (nl_nested_itr.get_type() == SLSI_RTT_EVENT_ATTR_LCI) {
 451                                          u8 *lci_ie = (u8 *)nl_nested_itr.get_data();
 452                                          rtt_result->LCI = (wifi_information_element *)malloc(sizeof(wifi_information_element) + nl_nested_itr.get_len() - 2);
 453                                          rtt_result->LCI->id = lci_ie[0];
 454                                          rtt_result->LCI->len =lci_ie[1];
 455                                          memcpy(rtt_result->LCI->data, &lci_ie[2], nl_nested_itr.get_len() - 2);
 456                                   } else if (nl_nested_itr.get_type() == SLSI_RTT_EVENT_ATTR_LCR) {
 457                                           u8 *lcr_ie = (u8 *)nl_nested_itr.get_data();
 458                                           rtt_result->LCR = (wifi_information_element *)malloc(sizeof(wifi_information_element) + nl_nested_itr.get_len() - 2);
 459                                           rtt_result->LCR->id = lcr_ie[0];
 460                                           rtt_result->LCR->len =lcr_ie[1];
 461                                           memcpy(rtt_result->LCR->data, &lcr_ie[2], nl_nested_itr.get_len() - 2);
 462                                   }
 463                            }
 464                            currentIdx++;
 465                        }
 466                }
 467              (*rttHandler.on_rtt_results)(id() ,currentIdx, rttResults);
 468               for (int i = 0; i < currentIdx; i++) {
 469                      free(rttResults[i]);
 470                      rttResults[i] = NULL;
 471               }
 472               currentIdx = 0;
 473        }
 474         ALOGE("Handled response for rtt config");
 475         return NL_SKIP;
 476     }
 477 };
 478 class GetRttCapabilitiesCommand : public WifiCommand
 479         {
 480         wifi_rtt_capabilities *mCapabilities;
 481 public:
 482     GetRttCapabilitiesCommand(wifi_interface_handle iface, wifi_rtt_capabilities *capabitlites)
 483         : WifiCommand(iface, 0), mCapabilities(capabitlites)
 484     {
 485         memset(mCapabilities, 0, sizeof(*mCapabilities));
 486     }
 487
 488     virtual int create() {
 489         int ret = mMsg.create(GOOGLE_OUI, SLSI_NL80211_VENDOR_SUBCMD_RTT_GET_CAPABILITIES);
 490         if (ret < 0) {
 491             ALOGE("NL message creation failed");
 492             return ret;
 493         }
 494
 495         return ret;
 496     }
 497 protected:
 498     virtual int handleResponse(WifiEvent& reply) {
 499
 500         if (reply.get_cmd() != NL80211_CMD_VENDOR) {
 501             ALOGE("Ignoring reply with cmd = %d", reply.get_cmd());
 502             return NL_SKIP;
 503         }
 504         void *data = reply.get_vendor_data();
 505         int len = reply.get_vendor_data_len();
 506
 507         memcpy(mCapabilities, data, min(len, (int) sizeof(*mCapabilities)));
 508           ALOGE("RTT capa response");
 509         return NL_OK;
 510     }
 511 };
 512 /*class GetRttResponderInfoCommand : public WifiCommand
 513 {
 514     wifi_rtt_responder* mResponderInfo;
 515 public:
 516     GetRttResponderInfoCommand(wifi_interface_handle iface, wifi_rtt_responder *responderInfo)
 517         : WifiCommand(iface, 0), mResponderInfo(responderInfo)
 518     {
 519         memset(mResponderInfo, 0 , sizeof(*mResponderInfo));
 520
 521     }
 522
 523     virtual int create() {
 524         ALOGD("Creating message to get responder info ; iface = %d", mIfaceInfo->id);
 525
 526         int ret = mMsg.create(GOOGLE_OUI, SLSI_NL80211_VENDOR_SUBCMD_RTT_GETAVAILCHANNEL);
 527         if (ret < 0) {
 528             return ret;
 529         }
 530
 531        // return ret;
 532     }
 533
 534 protected:
 535     virtual int handleResponse(WifiEvent& reply) {
 536
 537         ALOGD("In GetRttResponderInfoCommand::handleResponse");
 538
 539         if (reply.get_cmd() != NL80211_CMD_VENDOR) {
 540             ALOGD("Ignoring reply with cmd = %d", reply.get_cmd());
 541             return NL_SKIP;
 542         }
 543
 544         int id = reply.get_vendor_id();
 545         int subcmd = reply.get_vendor_subcmd();
 546
 547         void *data = reply.get_vendor_data();
 548         int len = reply.get_vendor_data_len();
 549
 550         ALOGD("Id = %0x, subcmd = %d, len = %d, expected len = %d", id, subcmd, len,
 551                 sizeof(*mResponderInfo));
 552
 553         memcpy(mResponderInfo, data, min(len, (int) sizeof(*mResponderInfo)));
 554
 555         return NL_OK;
 556     }
 557 };*/
 558
 559         /* API to request RTT measurement */
 560 wifi_error wifi_rtt_range_request(wifi_request_id id, wifi_interface_handle iface,
 561         unsigned num_rtt_config, wifi_rtt_config rtt_config[], wifi_rtt_event_handler handler)
 562 {
 563     ALOGE("Inside RTT RANGE range request");
 564     wifi_handle handle = getWifiHandle(iface);
 565     RttCommand *cmd = new RttCommand(iface, id, num_rtt_config, rtt_config, handler);
 566     NULL_CHECK_RETURN(cmd, "memory allocation failure", WIFI_ERROR_OUT_OF_MEMORY);
 567     wifi_error result = wifi_register_cmd(handle, id, cmd);
 568     if (result != WIFI_SUCCESS) {
 569         cmd->releaseRef();
 570         return result;
 571     }
 572     result = (wifi_error)cmd->start();
 573     if (result != WIFI_SUCCESS) {
 574         wifi_unregister_cmd(handle, id);
 575         cmd->releaseRef();
 576         return result;
 577     }
 578         ALOGE("wifi range request successfully executed");
 579     return result;
 580 }
 581
 582 /* API to cancel RTT measurements */
 583 wifi_error wifi_rtt_range_cancel(wifi_request_id id,  wifi_interface_handle iface,
 584         unsigned num_devices, mac_addr addr[])
 585 {
 586     if (!iface)
 587              return WIFI_ERROR_UNINITIALIZED;
 588     RttCommand *cmd = new RttCommand(iface, id);
 589     NULL_CHECK_RETURN(cmd, "memory allocation failure", WIFI_ERROR_OUT_OF_MEMORY);
 590     cmd->cancel_specific(num_devices, addr);
 591     cmd->releaseRef();
 592     return WIFI_SUCCESS;
 593 }
 594
 595 /* API to get RTT capability */
 596 wifi_error wifi_get_rtt_capabilities(wifi_interface_handle iface,
 597         wifi_rtt_capabilities *capabilities)
 598 {
 599          ALOGE("Inside get rtt capabilities cap:%p iface:%p", capabilities, iface);
 600          if (!iface)
 601              return WIFI_ERROR_UNINITIALIZED;
 602         GetRttCapabilitiesCommand command(iface, capabilities);
 603         return (wifi_error) command.requestResponse();
 604
 605 }
 606 /* API to get the responder information */
 607 wifi_error wifi_rtt_get_responder_info(wifi_interface_handle iface,
 608         wifi_rtt_responder* responderInfo)
 609 {
 610     /*GetRttResponderInfoCommand command(iface, responderInfo);
 611     return (wifi_error) command.requestResponse();*/
 612     return WIFI_ERROR_NOT_SUPPORTED;
 613
 614 }