Rajeev Kumar Sirasanagandla | 4f20b67 | 2018-03-12 13:52:50 +0530 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (c) 2018 The Linux Foundation. All rights reserved. |
| 3 | * |
| 4 | * Previously licensed under the ISC license by Qualcomm Atheros, Inc. |
| 5 | * |
| 6 | * |
| 7 | * Permission to use, copy, modify, and/or distribute this software for |
| 8 | * any purpose with or without fee is hereby granted, provided that the |
| 9 | * above copyright notice and this permission notice appear in all |
| 10 | * copies. |
| 11 | * |
| 12 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL |
| 13 | * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED |
| 14 | * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE |
| 15 | * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL |
| 16 | * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR |
| 17 | * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER |
| 18 | * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR |
| 19 | * PERFORMANCE OF THIS SOFTWARE. |
| 20 | */ |
| 21 | |
| 22 | /** |
| 23 | * DOC: wlan_hdd_debugfs_roam.c |
| 24 | * |
| 25 | * WLAN Host Device Driver implementation to update |
| 26 | * debugfs with roaming information |
| 27 | */ |
| 28 | |
| 29 | #include <wlan_hdd_debugfs_csr.h> |
| 30 | #include <wlan_hdd_main.h> |
| 31 | #include <cds_sched.h> |
| 32 | #include <wma_api.h> |
| 33 | #include "qwlan_version.h" |
| 34 | #include "wmi_unified_param.h" |
| 35 | #include "wlan_osif_request_manager.h" |
| 36 | |
| 37 | /** |
| 38 | * hdd_roam_scan_stats_debugfs_dealloc() - Dealloc objects in hdd request mgr |
| 39 | * @priv: Pointer to private data of hdd request object |
| 40 | * |
| 41 | * Return: None |
| 42 | */ |
| 43 | static void hdd_roam_scan_stats_debugfs_dealloc(void *priv) |
| 44 | { |
| 45 | struct hdd_roam_scan_stats_debugfs_priv *local_priv = priv; |
| 46 | struct wmi_roam_scan_stats_res *roam_scan_stats_res; |
| 47 | |
| 48 | if (!local_priv) |
| 49 | return; |
| 50 | |
| 51 | roam_scan_stats_res = local_priv->roam_scan_stats_res; |
| 52 | local_priv->roam_scan_stats_res = NULL; |
| 53 | |
| 54 | qdf_mem_free(roam_scan_stats_res); |
| 55 | } |
| 56 | |
| 57 | /** |
| 58 | * hdd_roam_scan_stats_cb() - Call back invoked from roam scan stats evt |
| 59 | * @context: cookie to get request object |
| 60 | * @res: roam scan stats response from firmware |
| 61 | * |
| 62 | * Return: None |
| 63 | */ |
| 64 | static void |
| 65 | hdd_roam_scan_stats_cb(void *context, struct wmi_roam_scan_stats_res *res) |
| 66 | { |
| 67 | struct osif_request *request; |
| 68 | struct hdd_roam_scan_stats_debugfs_priv *priv; |
| 69 | struct wmi_roam_scan_stats_res *stats_res; |
| 70 | uint32_t total_len; |
| 71 | |
| 72 | hdd_enter(); |
| 73 | |
| 74 | request = osif_request_get(context); |
| 75 | if (!request) { |
| 76 | hdd_err("Obsolete roam scan stats request"); |
| 77 | return; |
| 78 | } |
| 79 | |
| 80 | if (!res) { |
| 81 | hdd_err("Invalid response"); |
| 82 | goto end; |
| 83 | } |
| 84 | |
| 85 | priv = osif_request_priv(request); |
| 86 | |
| 87 | total_len = sizeof(*res) + res->num_roam_scans * |
| 88 | sizeof(struct wmi_roam_scan_stats_params); |
| 89 | |
| 90 | stats_res = qdf_mem_malloc(total_len); |
| 91 | if (!stats_res) { |
| 92 | hdd_err("No memory for response"); |
| 93 | goto end; |
| 94 | } |
| 95 | |
| 96 | qdf_mem_copy(stats_res, res, total_len); |
| 97 | priv->roam_scan_stats_res = stats_res; |
| 98 | |
| 99 | end: |
| 100 | osif_request_complete(request); |
| 101 | osif_request_put(request); |
| 102 | |
| 103 | hdd_exit(); |
| 104 | } |
| 105 | |
| 106 | /** |
| 107 | * hdd_get_roam_scan_stats() - Get roam scan stats using request manager |
| 108 | * @hdd_ctx: hdd context |
| 109 | * @adapter: pointer to adapter |
| 110 | * |
| 111 | * Return: Pointer to struct wmi_roam_scan_stats_res which conatins response |
| 112 | * from firmware |
| 113 | */ |
| 114 | static struct |
| 115 | wmi_roam_scan_stats_res *hdd_get_roam_scan_stats(struct hdd_context *hdd_ctx, |
| 116 | struct hdd_adapter *adapter) |
| 117 | { |
| 118 | struct wmi_roam_scan_stats_res *res; |
| 119 | struct wmi_roam_scan_stats_res *stats_res = NULL; |
| 120 | void *context; |
| 121 | struct osif_request *request; |
| 122 | struct hdd_roam_scan_stats_debugfs_priv *priv; |
| 123 | static const struct osif_request_params params = { |
| 124 | .priv_size = sizeof(*priv), |
| 125 | .timeout_ms = WLAN_WAIT_TIME_FW_ROAM_STATS, |
| 126 | .dealloc = hdd_roam_scan_stats_debugfs_dealloc, |
| 127 | }; |
| 128 | QDF_STATUS status; |
| 129 | int ret; |
| 130 | uint32_t total_len; |
| 131 | |
| 132 | hdd_enter(); |
| 133 | |
| 134 | if (!wlan_hdd_validate_modules_state(hdd_ctx)) |
| 135 | return NULL; |
| 136 | |
| 137 | request = osif_request_alloc(¶ms); |
| 138 | if (!request) { |
| 139 | hdd_err("Request allocation failure"); |
| 140 | return NULL; |
| 141 | } |
| 142 | |
| 143 | context = osif_request_cookie(request); |
| 144 | |
| 145 | status = sme_get_roam_scan_stats(hdd_ctx->mac_handle, |
| 146 | hdd_roam_scan_stats_cb, |
| 147 | context, adapter->session_id); |
| 148 | if (!QDF_IS_STATUS_SUCCESS(status)) { |
| 149 | hdd_err("roam scan stats request failed"); |
| 150 | goto cleanup; |
| 151 | } |
| 152 | |
| 153 | ret = osif_request_wait_for_response(request); |
| 154 | if (ret) { |
| 155 | hdd_err("roam scan stats response time out"); |
| 156 | goto cleanup; |
| 157 | } |
| 158 | |
| 159 | priv = osif_request_priv(request); |
| 160 | res = priv->roam_scan_stats_res; |
| 161 | if (!res) { |
| 162 | hdd_err("Failure of roam scan stats response retrieval"); |
| 163 | goto cleanup; |
| 164 | } |
| 165 | |
| 166 | total_len = sizeof(*res) + res->num_roam_scans * |
| 167 | sizeof(struct wmi_roam_scan_stats_params); |
| 168 | |
| 169 | stats_res = qdf_mem_malloc(total_len); |
| 170 | if (!stats_res) { |
| 171 | hdd_err("No memory for response"); |
| 172 | goto cleanup; |
| 173 | } |
| 174 | |
| 175 | qdf_mem_copy(stats_res, res, total_len); |
| 176 | |
| 177 | cleanup: |
| 178 | osif_request_put(request); |
| 179 | hdd_exit(); |
| 180 | |
| 181 | return stats_res; |
| 182 | } |
| 183 | |
| 184 | /** |
| 185 | * hdd_roam_scan_trigger_to_str() - Get string for |
| 186 | * enum WMI_ROAM_TRIGGER_REASON_ID |
| 187 | * @roam_scan_trigger: roam scan trigger ID |
| 188 | * |
| 189 | * Return: Meaningful string from enum WMI_ROAM_TRIGGER_REASON_ID |
| 190 | */ |
| 191 | static char *hdd_roam_scan_trigger_to_str(uint32_t roam_scan_trigger) |
| 192 | { |
| 193 | switch (roam_scan_trigger) { |
| 194 | case WMI_ROAM_TRIGGER_REASON_PER: |
| 195 | return "PER"; |
| 196 | case WMI_ROAM_TRIGGER_REASON_BMISS: |
| 197 | return "BEACON MISS"; |
| 198 | case WMI_ROAM_TRIGGER_REASON_LOW_RSSI: |
| 199 | return "LOW RSSI"; |
| 200 | case WMI_ROAM_TRIGGER_REASON_HIGH_RSSI: |
| 201 | return "HIGH RSSI"; |
| 202 | case WMI_ROAM_TRIGGER_REASON_PERIODIC: |
| 203 | return "PERIODIC SCAN"; |
| 204 | case WMI_ROAM_TRIGGER_REASON_MAWC: |
| 205 | return "WMI_ROAM_TRIGGER_REASON_MAWC"; |
| 206 | case WMI_ROAM_TRIGGER_REASON_DENSE: |
| 207 | return "DENSE ENVIRONMENT"; |
| 208 | case WMI_ROAM_TRIGGER_REASON_BACKGROUND: |
| 209 | return "BACKGROUND SCAN"; |
| 210 | case WMI_ROAM_TRIGGER_REASON_FORCED: |
| 211 | return "FORCED SCAN"; |
| 212 | case WMI_ROAM_TRIGGER_REASON_BTM: |
| 213 | return "BTM TRIGGER"; |
| 214 | case WMI_ROAM_TRIGGER_REASON_UNIT_TEST: |
| 215 | return "TEST COMMMAND"; |
| 216 | default: |
| 217 | return "UNKNOWN REASON"; |
| 218 | } |
| 219 | return "UNKNOWN REASON"; |
| 220 | } |
| 221 | |
| 222 | /** |
| 223 | * hdd_roam_scan_trigger_value_to_str() - Get trigger value string for |
| 224 | * enum WMI_ROAM_TRIGGER_REASON_ID |
| 225 | * @roam_scan_trigger: roam scan trigger ID |
| 226 | * @bool: output pointer to hold whether to print trigger value |
| 227 | * |
| 228 | * Return: Meaningful string from trigger value |
| 229 | */ |
| 230 | static char *hdd_roam_scan_trigger_value(uint32_t roam_scan_trigger, |
| 231 | bool *print) |
| 232 | { |
| 233 | *print = true; |
| 234 | |
| 235 | switch (roam_scan_trigger) { |
| 236 | case WMI_ROAM_TRIGGER_REASON_PER: |
| 237 | return "percentage"; |
| 238 | case WMI_ROAM_TRIGGER_REASON_LOW_RSSI: |
| 239 | return "dB"; |
| 240 | case WMI_ROAM_TRIGGER_REASON_HIGH_RSSI: |
| 241 | return "dB"; |
| 242 | case WMI_ROAM_TRIGGER_REASON_PERIODIC: |
| 243 | return "ms"; |
| 244 | case WMI_ROAM_TRIGGER_REASON_DENSE: |
| 245 | return "(1 - Rx, 2 - Tx)"; |
| 246 | default: |
| 247 | *print = false; |
| 248 | return NULL; |
| 249 | } |
| 250 | } |
| 251 | |
| 252 | /** |
| 253 | * hdd_client_id_to_str() - Helper func to get meaninful string from client id |
| 254 | * @client_id: Id of the client which triggered roam scan in firmware |
| 255 | * |
| 256 | * Return: Meaningful string from enum WMI_SCAN_CLIENT_ID |
| 257 | */ |
| 258 | static char *hdd_client_id_to_str(uint32_t client_id) |
| 259 | { |
| 260 | switch (client_id) { |
| 261 | case WMI_SCAN_CLIENT_NLO: |
| 262 | return "PNO"; |
| 263 | case WMI_SCAN_CLIENT_EXTSCAN: |
| 264 | return "GSCAN"; |
| 265 | case WMI_SCAN_CLIENT_ROAM: |
| 266 | return "ROAM"; |
| 267 | case WMI_SCAN_CLIENT_P2P: |
| 268 | return "P2P"; |
| 269 | case WMI_SCAN_CLIENT_LPI: |
| 270 | return "LPI"; |
| 271 | case WMI_SCAN_CLIENT_NAN: |
| 272 | return "NAN"; |
| 273 | case WMI_SCAN_CLIENT_ANQP: |
| 274 | return "ANQP"; |
| 275 | case WMI_SCAN_CLIENT_OBSS: |
| 276 | return "OBSS"; |
| 277 | case WMI_SCAN_CLIENT_PLM: |
| 278 | return "PLM"; |
| 279 | case WMI_SCAN_CLIENT_HOST: |
| 280 | return "HOST"; |
| 281 | default: |
| 282 | return "UNKNOWN"; |
| 283 | } |
| 284 | return "UNKNOWN"; |
| 285 | } |
| 286 | |
| 287 | /** |
| 288 | * hdd_roam_scan_trigger() - Print roam scan trigger info into buffer |
| 289 | * @scan: roam scan event data |
| 290 | * @buf: buffer to write roam scan trigger info |
| 291 | * @buf_avail_len: available buffer length |
| 292 | * |
| 293 | * Return: No.of bytes populated by this function in buffer |
| 294 | */ |
| 295 | static ssize_t |
| 296 | hdd_roam_scan_trigger(struct wmi_roam_scan_stats_params *scan, |
| 297 | uint8_t *buf, ssize_t buf_avail_len) |
| 298 | { |
| 299 | ssize_t length = 0; |
| 300 | int ret; |
| 301 | char *str; |
| 302 | bool print_trigger_value; |
| 303 | |
| 304 | ret = scnprintf(buf, buf_avail_len, |
| 305 | "Trigger reason is %s\n", |
| 306 | hdd_roam_scan_trigger_to_str(scan->trigger_id)); |
| 307 | if (ret <= 0) |
| 308 | return length; |
| 309 | |
| 310 | length = ret; |
| 311 | |
| 312 | str = hdd_roam_scan_trigger_value(scan->trigger_id, |
| 313 | &print_trigger_value); |
| 314 | if (!print_trigger_value || !str) |
| 315 | return length; |
| 316 | |
| 317 | if (length >= buf_avail_len) { |
| 318 | hdd_err("No sufficient buf_avail_len"); |
| 319 | length = buf_avail_len; |
| 320 | return length; |
| 321 | } |
| 322 | |
| 323 | ret = scnprintf(buf + length, buf_avail_len - length, |
| 324 | "Trigger value is: %u %s\n", |
| 325 | scan->trigger_value, str); |
| 326 | if (ret <= 0) |
| 327 | return length; |
| 328 | |
| 329 | length += ret; |
| 330 | return length; |
| 331 | } |
| 332 | |
| 333 | /** |
| 334 | * hdd_roam_scan_chan() - Print roam scan chan freq info into buffer |
| 335 | * @scan: roam scan event data |
| 336 | * @buf: buffer to write roam scan freq info |
| 337 | * @buf_avail_len: available buffer length |
| 338 | * |
| 339 | * Return: No.of bytes populated by this function in buffer |
| 340 | */ |
| 341 | static ssize_t |
| 342 | hdd_roam_scan_chan(struct wmi_roam_scan_stats_params *scan, |
| 343 | uint8_t *buf, ssize_t buf_avail_len) |
| 344 | { |
| 345 | ssize_t length = 0; |
| 346 | uint32_t i; |
| 347 | int ret; |
| 348 | |
| 349 | ret = scnprintf(buf, buf_avail_len, |
| 350 | "Num of scan channels: %u\n" |
| 351 | "scan channel list:", |
| 352 | scan->num_scan_chans); |
| 353 | if (ret <= 0) |
| 354 | return length; |
| 355 | |
| 356 | length = ret; |
| 357 | |
| 358 | for (i = 0; i < scan->num_scan_chans; i++) { |
| 359 | if (length >= buf_avail_len) { |
| 360 | hdd_err("No sufficient buf_avail_len"); |
| 361 | length = buf_avail_len; |
| 362 | return length; |
| 363 | } |
| 364 | |
| 365 | ret = scnprintf(buf + length, buf_avail_len - length, |
| 366 | "%u ", scan->scan_freqs[i]); |
| 367 | if (ret <= 0) |
| 368 | return length; |
| 369 | |
| 370 | length += ret; |
| 371 | } |
| 372 | |
| 373 | return length; |
| 374 | } |
| 375 | |
| 376 | /** |
| 377 | * wlan_hdd_update_roam_stats() - Internal function to get roam scan stats |
| 378 | * @hdd_ctx: hdd context |
| 379 | * @adapter: pointer to adapter |
| 380 | * @buf: buffer to hold the stats |
| 381 | * @len: maximum available length in response buffer |
| 382 | * |
| 383 | * Return: Size of formatted roam scan response stats |
| 384 | */ |
| 385 | static ssize_t |
| 386 | wlan_hdd_update_roam_stats(struct hdd_context *hdd_ctx, |
| 387 | struct hdd_adapter *adapter, |
| 388 | uint8_t *buf, ssize_t buf_avail_len) |
| 389 | { |
| 390 | ssize_t length = 0; |
| 391 | struct wmi_roam_scan_stats_res *roam_stats; |
| 392 | struct wmi_roam_scan_stats_params *scan; |
| 393 | int ret; |
| 394 | int rsi; /* roam scan iterator */ |
| 395 | int rci; /* roam candidate iterator */ |
| 396 | |
| 397 | roam_stats = hdd_get_roam_scan_stats(hdd_ctx, adapter); |
| 398 | if (!roam_stats) { |
| 399 | hdd_err("Couldn't get roam stats"); |
| 400 | ret = scnprintf(buf, buf_avail_len, |
| 401 | "Failed to fetch roam stats\n"); |
| 402 | if (ret <= 0) |
| 403 | return length; |
| 404 | length += ret; |
| 405 | return length; |
| 406 | } |
| 407 | |
| 408 | ret = scnprintf(buf, buf_avail_len, |
| 409 | "\n\nStats of last %u roam scans\n", |
| 410 | roam_stats->num_roam_scans); |
| 411 | if (ret <= 0) |
| 412 | goto free_mem; |
| 413 | length += ret; |
| 414 | |
| 415 | for (rsi = 0; rsi < roam_stats->num_roam_scans; rsi++) { |
| 416 | if (length >= buf_avail_len) { |
| 417 | hdd_err("No sufficient buf_avail_len"); |
| 418 | length = buf_avail_len; |
| 419 | goto free_mem; |
| 420 | } |
| 421 | |
| 422 | scan = &roam_stats->roam_scan[rsi]; |
| 423 | ret = scnprintf(buf + length, buf_avail_len - length, |
| 424 | "\nRoam scan[%u] details\n", rsi); |
| 425 | if (ret <= 0) |
| 426 | goto free_mem; |
| 427 | length += ret; |
| 428 | |
| 429 | if (length >= buf_avail_len) { |
| 430 | hdd_err("No sufficient buf_avail_len"); |
| 431 | length = buf_avail_len; |
| 432 | goto free_mem; |
| 433 | } |
| 434 | |
| 435 | ret = scnprintf(buf + length, buf_avail_len - length, |
| 436 | "This scan is triggered by \"%s\" scan client\n", |
| 437 | hdd_client_id_to_str(scan->client_id)); |
| 438 | |
| 439 | if (ret <= 0) |
| 440 | goto free_mem; |
| 441 | length += ret; |
| 442 | |
| 443 | if (length >= buf_avail_len) { |
| 444 | hdd_err("No sufficient buf_avail_len"); |
| 445 | length = buf_avail_len; |
| 446 | goto free_mem; |
| 447 | } |
| 448 | |
| 449 | length += hdd_roam_scan_trigger(scan, buf + length, |
| 450 | buf_avail_len - length); |
| 451 | if (length >= buf_avail_len) { |
| 452 | hdd_err("No sufficient buf_avail_len"); |
| 453 | length = buf_avail_len; |
| 454 | goto free_mem; |
| 455 | } |
| 456 | |
| 457 | length += hdd_roam_scan_chan(scan, buf + length, |
| 458 | buf_avail_len - length); |
| 459 | if (length >= buf_avail_len) { |
| 460 | hdd_err("No sufficient buf_avail_len"); |
| 461 | length = buf_avail_len; |
| 462 | goto free_mem; |
| 463 | } |
| 464 | |
| 465 | if (scan->is_roam_successful) { |
| 466 | ret = scnprintf(buf + length, |
| 467 | buf_avail_len - length, |
| 468 | "\nSTA roamed from " |
| 469 | MAC_ADDRESS_STR " to " |
| 470 | MAC_ADDRESS_STR "\n", |
| 471 | MAC_ADDR_ARRAY(scan->old_bssid), |
| 472 | MAC_ADDR_ARRAY(scan->new_bssid)); |
| 473 | } else { |
| 474 | ret = scnprintf(buf + length, |
| 475 | buf_avail_len - length, |
| 476 | "\nSTA is connected to " MAC_ADDRESS_STR |
| 477 | " before and after scan, not roamed\n", |
| 478 | MAC_ADDR_ARRAY(scan->old_bssid)); |
| 479 | } |
| 480 | if (ret <= 0) |
| 481 | goto free_mem; |
| 482 | length += ret; |
| 483 | |
| 484 | if (length >= buf_avail_len) { |
| 485 | hdd_err("No sufficient buf_avail_len"); |
| 486 | length = buf_avail_len; |
| 487 | goto free_mem; |
| 488 | } |
| 489 | |
| 490 | ret = scnprintf(buf + length, buf_avail_len - length, |
| 491 | "Roam candidate details\n"); |
| 492 | if (ret <= 0) |
| 493 | goto free_mem; |
| 494 | length += ret; |
| 495 | |
| 496 | if (length >= buf_avail_len) { |
| 497 | hdd_err("No sufficient buf_avail_len"); |
| 498 | length = buf_avail_len; |
| 499 | goto free_mem; |
| 500 | } |
| 501 | |
| 502 | ret = scnprintf(buf + length, buf_avail_len - length, |
| 503 | " BSSID FREQ SCORE RSSI\n"); |
| 504 | if (ret <= 0) |
| 505 | goto free_mem; |
| 506 | length += ret; |
| 507 | |
| 508 | for (rci = 0; rci < scan->num_roam_candidates; rci++) { |
| 509 | uint8_t *bssid = scan->cand[rci].bssid; |
| 510 | |
| 511 | if (length >= buf_avail_len) { |
| 512 | hdd_err("No sufficient buf_avail_len"); |
| 513 | length = buf_avail_len; |
| 514 | goto free_mem; |
| 515 | } |
| 516 | |
| 517 | ret = scnprintf(buf + length, |
| 518 | buf_avail_len - length, |
| 519 | MAC_ADDRESS_STR " %4u %3u %3u\n", |
| 520 | MAC_ADDR_ARRAY(bssid), |
| 521 | scan->cand[rci].freq, |
| 522 | scan->cand[rci].score, |
| 523 | scan->cand[rci].rssi); |
| 524 | if (ret <= 0) |
| 525 | goto free_mem; |
| 526 | length += ret; |
| 527 | } |
| 528 | } |
| 529 | |
| 530 | free_mem: |
| 531 | qdf_mem_free(roam_stats); |
| 532 | return length; |
| 533 | } |
| 534 | |
| 535 | ssize_t |
| 536 | wlan_hdd_debugfs_update_roam_stats(struct hdd_context *hdd_ctx, |
| 537 | struct hdd_adapter *adapter, |
| 538 | uint8_t *buf, ssize_t buf_avail_len) |
| 539 | { |
| 540 | ssize_t len = 0; |
| 541 | int ret_val; |
| 542 | |
| 543 | hdd_enter(); |
| 544 | |
| 545 | len = wlan_hdd_current_time_info_debugfs(buf, buf_avail_len - len); |
| 546 | |
| 547 | if (len >= buf_avail_len) { |
| 548 | hdd_err("No sufficient buf_avail_len"); |
| 549 | return buf_avail_len; |
| 550 | } |
| 551 | if (adapter->device_mode != QDF_STA_MODE) { |
| 552 | ret_val = scnprintf(buf + len, buf_avail_len - len, |
| 553 | "Interface is not in STA Mode\n"); |
| 554 | if (ret_val <= 0) |
| 555 | return len; |
| 556 | |
| 557 | len += ret_val; |
| 558 | return len; |
| 559 | } |
| 560 | |
| 561 | if (len >= buf_avail_len) { |
| 562 | hdd_err("No sufficient buf_avail_len"); |
| 563 | return buf_avail_len; |
| 564 | } |
| 565 | len += wlan_hdd_update_roam_stats(hdd_ctx, adapter, buf + len, |
| 566 | buf_avail_len - len); |
| 567 | |
| 568 | hdd_exit(); |
| 569 | |
| 570 | return len; |
| 571 | } |