Prakash Dhavali | 7090c5f | 2015-11-02 17:55:19 -0800 | [diff] [blame] | 1 | /* |
Ryan Hsu | 4252a2f | 2016-01-05 11:18:24 -0800 | [diff] [blame^] | 2 | * Copyright (c) 2012-2016 The Linux Foundation. All rights reserved. |
Prakash Dhavali | 7090c5f | 2015-11-02 17:55:19 -0800 | [diff] [blame] | 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 | * This file was originally distributed by Qualcomm Atheros, Inc. |
| 24 | * under proprietary terms before Copyright ownership was assigned |
| 25 | * to the Linux Foundation. |
| 26 | */ |
| 27 | |
| 28 | /*=========================================================================== |
| 29 | |
| 30 | s a p C h S e l e c t . C |
| 31 | OVERVIEW: |
| 32 | |
| 33 | This software unit holds the implementation of the WLAN SAP modules |
| 34 | functions for channel selection. |
| 35 | |
| 36 | DEPENDENCIES: |
| 37 | |
| 38 | Are listed for each API below. |
| 39 | ===========================================================================*/ |
| 40 | |
| 41 | /*-------------------------------------------------------------------------- |
| 42 | Include Files |
| 43 | ------------------------------------------------------------------------*/ |
| 44 | #include "cdf_trace.h" |
| 45 | #include "csr_api.h" |
| 46 | #include "sme_api.h" |
| 47 | #include "sap_ch_select.h" |
| 48 | #include "sap_internal.h" |
| 49 | #ifdef ANI_OS_TYPE_QNX |
| 50 | #include "stdio.h" |
| 51 | #endif |
| 52 | #ifdef FEATURE_AP_MCC_CH_AVOIDANCE |
| 53 | #include "lim_utils.h" |
| 54 | #include "parser_api.h" |
| 55 | #endif /* FEATURE_AP_MCC_CH_AVOIDANCE */ |
| 56 | |
| 57 | #ifdef CONFIG_CNSS |
| 58 | #include <net/cnss.h> |
| 59 | #endif |
| 60 | |
| 61 | /*-------------------------------------------------------------------------- |
| 62 | Function definitions |
| 63 | --------------------------------------------------------------------------*/ |
| 64 | |
| 65 | /*-------------------------------------------------------------------------- |
| 66 | Defines |
| 67 | --------------------------------------------------------------------------*/ |
| 68 | #define SAP_DEBUG |
| 69 | |
| 70 | #define IS_RSSI_VALID(extRssi, rssi) \ |
| 71 | ( \ |
| 72 | ((extRssi < rssi) ? true : false) \ |
| 73 | ) |
| 74 | |
| 75 | #define SET_ACS_BAND(acs_band, pSapCtx) \ |
| 76 | { \ |
| 77 | if (pSapCtx->acs_cfg->start_ch <= 14 && \ |
| 78 | pSapCtx->acs_cfg->end_ch <= 14) \ |
| 79 | acs_band = eCSR_DOT11_MODE_11g; \ |
| 80 | else if (pSapCtx->acs_cfg->start_ch >= 14)\ |
| 81 | acs_band = eCSR_DOT11_MODE_11a; \ |
| 82 | else \ |
| 83 | acs_band = eCSR_DOT11_MODE_abg; \ |
| 84 | } |
| 85 | |
| 86 | #ifdef FEATURE_WLAN_CH_AVOID |
| 87 | sapSafeChannelType safe_channels[NUM_20MHZ_RF_CHANNELS] = { |
| 88 | /*CH , SAFE, default safe */ |
| 89 | {1, true} |
| 90 | , /* RF_CHAN_1, */ |
| 91 | {2, true} |
| 92 | , /* RF_CHAN_2, */ |
| 93 | {3, true} |
| 94 | , /* RF_CHAN_3, */ |
| 95 | {4, true} |
| 96 | , /* RF_CHAN_4, */ |
| 97 | {5, true} |
| 98 | , /* RF_CHAN_5, */ |
| 99 | {6, true} |
| 100 | , /* RF_CHAN_6, */ |
| 101 | {7, true} |
| 102 | , /* RF_CHAN_7, */ |
| 103 | {8, true} |
| 104 | , /* RF_CHAN_8, */ |
| 105 | {9, true} |
| 106 | , /* RF_CHAN_9, */ |
| 107 | {10, true} |
| 108 | , /* RF_CHAN_10, */ |
| 109 | {11, true} |
| 110 | , /* RF_CHAN_11, */ |
| 111 | {12, true} |
| 112 | , /* RF_CHAN_12, */ |
| 113 | {13, true} |
| 114 | , /* RF_CHAN_13, */ |
| 115 | {14, true} |
| 116 | , /* RF_CHAN_14, */ |
| 117 | {240, true} |
| 118 | , /* RF_CHAN_240, */ |
| 119 | {244, true} |
| 120 | , /* RF_CHAN_244, */ |
| 121 | {248, true} |
| 122 | , /* RF_CHAN_248, */ |
| 123 | {252, true} |
| 124 | , /* RF_CHAN_252, */ |
| 125 | {208, true} |
| 126 | , /* RF_CHAN_208, */ |
| 127 | {212, true} |
| 128 | , /* RF_CHAN_212, */ |
| 129 | {216, true} |
| 130 | , /* RF_CHAN_216, */ |
| 131 | {36, true} |
| 132 | , /* RF_CHAN_36, */ |
| 133 | {40, true} |
| 134 | , /* RF_CHAN_40, */ |
| 135 | {44, true} |
| 136 | , /* RF_CHAN_44, */ |
| 137 | {48, true} |
| 138 | , /* RF_CHAN_48, */ |
| 139 | {52, true} |
| 140 | , /* RF_CHAN_52, */ |
| 141 | {56, true} |
| 142 | , /* RF_CHAN_56, */ |
| 143 | {60, true} |
| 144 | , /* RF_CHAN_60, */ |
| 145 | {64, true} |
| 146 | , /* RF_CHAN_64, */ |
| 147 | {100, true} |
| 148 | , /* RF_CHAN_100, */ |
| 149 | {104, true} |
| 150 | , /* RF_CHAN_104, */ |
| 151 | {108, true} |
| 152 | , /* RF_CHAN_108, */ |
| 153 | {112, true} |
| 154 | , /* RF_CHAN_112, */ |
| 155 | {116, true} |
| 156 | , /* RF_CHAN_116, */ |
| 157 | {120, true} |
| 158 | , /* RF_CHAN_120, */ |
| 159 | {124, true} |
| 160 | , /* RF_CHAN_124, */ |
| 161 | {128, true} |
| 162 | , /* RF_CHAN_128, */ |
| 163 | {132, true} |
| 164 | , /* RF_CHAN_132, */ |
| 165 | {136, true} |
| 166 | , /* RF_CHAN_136, */ |
| 167 | {140, true} |
| 168 | , /* RF_CHAN_140, */ |
| 169 | {144, true} |
| 170 | , /* RF_CHAN_144, */ |
| 171 | {149, true} |
| 172 | , /* RF_CHAN_149, */ |
| 173 | {153, true} |
| 174 | , /* RF_CHAN_153, */ |
| 175 | {157, true} |
| 176 | , /* RF_CHAN_157, */ |
| 177 | {161, true} |
| 178 | , /* RF_CHAN_161, */ |
| 179 | {165, true} |
| 180 | , /* RF_CHAN_165, */ |
| 181 | }; |
| 182 | #endif |
| 183 | |
| 184 | typedef struct { |
| 185 | uint16_t chStartNum; |
| 186 | uint32_t weight; |
| 187 | } sapAcsChannelInfo; |
| 188 | |
| 189 | sapAcsChannelInfo acs_ht40_channels5_g[] = { |
| 190 | {36, SAP_ACS_WEIGHT_MAX}, |
| 191 | {44, SAP_ACS_WEIGHT_MAX}, |
| 192 | {52, SAP_ACS_WEIGHT_MAX}, |
| 193 | {60, SAP_ACS_WEIGHT_MAX}, |
| 194 | {100, SAP_ACS_WEIGHT_MAX}, |
| 195 | {108, SAP_ACS_WEIGHT_MAX}, |
| 196 | {116, SAP_ACS_WEIGHT_MAX}, |
| 197 | {124, SAP_ACS_WEIGHT_MAX}, |
| 198 | {132, SAP_ACS_WEIGHT_MAX}, |
| 199 | {140, SAP_ACS_WEIGHT_MAX}, |
| 200 | {149, SAP_ACS_WEIGHT_MAX}, |
| 201 | {157, SAP_ACS_WEIGHT_MAX}, |
| 202 | }; |
| 203 | |
| 204 | sapAcsChannelInfo acs_ht80_channels[] = { |
| 205 | {36, SAP_ACS_WEIGHT_MAX}, |
| 206 | {52, SAP_ACS_WEIGHT_MAX}, |
| 207 | {100, SAP_ACS_WEIGHT_MAX}, |
| 208 | {116, SAP_ACS_WEIGHT_MAX}, |
| 209 | {132, SAP_ACS_WEIGHT_MAX}, |
| 210 | {149, SAP_ACS_WEIGHT_MAX}, |
| 211 | }; |
| 212 | |
Kiran Kumar Lokere | b3d8b5b | 2015-10-06 19:33:42 -0700 | [diff] [blame] | 213 | sapAcsChannelInfo acs_vht160_channels[] = { |
| 214 | {36, SAP_ACS_WEIGHT_MAX}, |
| 215 | {100, SAP_ACS_WEIGHT_MAX}, |
| 216 | }; |
| 217 | |
Prakash Dhavali | 7090c5f | 2015-11-02 17:55:19 -0800 | [diff] [blame] | 218 | sapAcsChannelInfo acs_ht40_channels24_g[] = { |
| 219 | {1, SAP_ACS_WEIGHT_MAX}, |
| 220 | {2, SAP_ACS_WEIGHT_MAX}, |
| 221 | {3, SAP_ACS_WEIGHT_MAX}, |
| 222 | {4, SAP_ACS_WEIGHT_MAX}, |
| 223 | {9, SAP_ACS_WEIGHT_MAX}, |
| 224 | }; |
| 225 | |
| 226 | #define CHANNEL_165 165 |
| 227 | |
| 228 | /* rssi discount for channels in PCL */ |
| 229 | #define PCL_RSSI_DISCOUNT 10 |
| 230 | |
| 231 | #ifdef FEATURE_AP_MCC_CH_AVOIDANCE |
| 232 | /** |
| 233 | * sap_check_n_add_channel() - checks and add given channel in sap context's |
| 234 | * avoid_channels_info struct |
| 235 | * @sap_ctx: sap context. |
| 236 | * @new_channel: channel to be added to sap_ctx's avoid ch info |
| 237 | * |
| 238 | * sap_ctx contains sap_avoid_ch_info strcut containing the list of channels on |
| 239 | * which MDM device's AP with MCC was detected. This function will add channels |
| 240 | * to that list after checking for duplicates. |
| 241 | * |
| 242 | * Return: true: if channel was added or already present |
| 243 | * else false: if channel list was already full. |
| 244 | */ |
| 245 | bool |
| 246 | sap_check_n_add_channel(ptSapContext sap_ctx, |
| 247 | uint8_t new_channel) |
| 248 | { |
| 249 | uint8_t i = 0; |
| 250 | struct sap_avoid_channels_info *ie_info = |
| 251 | &sap_ctx->sap_detected_avoid_ch_ie; |
| 252 | |
| 253 | for (i = 0; i < sizeof(ie_info->channels); i++) { |
| 254 | if (ie_info->channels[i] == new_channel) |
| 255 | break; |
| 256 | |
| 257 | if (ie_info->channels[i] == 0) { |
| 258 | ie_info->channels[i] = new_channel; |
| 259 | break; |
| 260 | } |
| 261 | } |
| 262 | if (i == sizeof(ie_info->channels)) |
| 263 | return false; |
| 264 | else |
| 265 | return true; |
| 266 | } |
| 267 | /** |
| 268 | * sap_check_n_add_overlapped_chnls() - checks & add overlapped channels |
| 269 | * to primary channel in 2.4Ghz band. |
| 270 | * @sap_ctx: sap context. |
| 271 | * @primary_chnl: primary channel to be avoided. |
| 272 | * |
| 273 | * sap_ctx contains sap_avoid_ch_info struct containing the list of channels on |
| 274 | * which MDM device's AP with MCC was detected. This function will add channels |
| 275 | * to that list after checking for duplicates. |
| 276 | * |
| 277 | * Return: true: if channel was added or already present |
| 278 | * else false: if channel list was already full. |
| 279 | */ |
| 280 | static bool |
| 281 | sap_check_n_add_overlapped_chnls(ptSapContext sap_ctx, uint8_t primary_channel) |
| 282 | { |
| 283 | uint8_t i = 0, j = 0, upper_chnl = 0, lower_chnl = 0; |
| 284 | struct sap_avoid_channels_info *ie_info = |
| 285 | &sap_ctx->sap_detected_avoid_ch_ie; |
| 286 | /* |
| 287 | * if primary channel less than channel 1 or out of 2g band then |
| 288 | * no further process is required. return true in this case. |
| 289 | */ |
| 290 | if (primary_channel < CHANNEL_1 || primary_channel > CHANNEL_14) |
| 291 | return true; |
| 292 | |
| 293 | /* lower channel is one channel right before primary channel */ |
| 294 | lower_chnl = primary_channel - 1; |
| 295 | /* upper channel is one channel right after primary channel */ |
| 296 | upper_chnl = primary_channel + 1; |
| 297 | |
| 298 | /* lower channel needs to be non-zero, zero is not valid channel */ |
| 299 | if (lower_chnl > (CHANNEL_1 - 1)) { |
| 300 | for (i = 0; i < sizeof(ie_info->channels); i++) { |
| 301 | if (ie_info->channels[i] == lower_chnl) |
| 302 | break; |
| 303 | if (ie_info->channels[i] == 0) { |
| 304 | ie_info->channels[i] = lower_chnl; |
| 305 | break; |
| 306 | } |
| 307 | } |
| 308 | } |
| 309 | /* upper channel needs to be atleast last channel in 2.4Ghz band */ |
| 310 | if (upper_chnl < (CHANNEL_14 + 1)) { |
| 311 | for (j = 0; j < sizeof(ie_info->channels); j++) { |
| 312 | if (ie_info->channels[j] == upper_chnl) |
| 313 | break; |
| 314 | if (ie_info->channels[j] == 0) { |
| 315 | ie_info->channels[j] = upper_chnl; |
| 316 | break; |
| 317 | } |
| 318 | } |
| 319 | } |
| 320 | if (i == sizeof(ie_info->channels) || j == sizeof(ie_info->channels)) |
| 321 | return false; |
| 322 | else |
| 323 | return true; |
| 324 | } |
| 325 | |
| 326 | /** |
| 327 | * sap_process_avoid_ie() - processes the detected Q2Q IE |
| 328 | * context's avoid_channels_info struct |
| 329 | * @hal: hal handle |
| 330 | * @sap_ctx: sap context. |
| 331 | * @scan_result: scan results for ACS scan. |
| 332 | * @spect_info: spectrum weights array to update |
| 333 | * |
| 334 | * Detection of Q2Q IE indicates presence of another MDM device with its AP |
| 335 | * operating in MCC mode. This function parses the scan results and processes |
| 336 | * the Q2Q IE if found. It then extracts the channels and populates them in |
| 337 | * sap_ctx struct. It also increases the weights of those channels so that |
| 338 | * ACS logic will avoid those channels in its selection algorithm. |
| 339 | * |
| 340 | * Return: void |
| 341 | */ |
| 342 | void sap_process_avoid_ie(tHalHandle hal, |
| 343 | ptSapContext sap_ctx, |
| 344 | tScanResultHandle scan_result, |
| 345 | tSapChSelSpectInfo *spect_info) |
| 346 | { |
| 347 | uint32_t total_ie_len = 0; |
| 348 | uint8_t *temp_ptr = NULL; |
| 349 | uint8_t i = 0; |
| 350 | struct sAvoidChannelIE *avoid_ch_ie; |
| 351 | tCsrScanResultInfo *node = NULL; |
| 352 | tpAniSirGlobal mac_ctx = NULL; |
| 353 | tSapSpectChInfo *spect_ch = NULL; |
| 354 | |
| 355 | mac_ctx = PMAC_STRUCT(hal); |
| 356 | spect_ch = spect_info->pSpectCh; |
| 357 | node = sme_scan_result_get_first(hal, scan_result); |
| 358 | |
| 359 | while (node) { |
| 360 | total_ie_len = (node->BssDescriptor.length + |
| 361 | sizeof(uint16_t) + sizeof(uint32_t) - |
| 362 | sizeof(tSirBssDescription)); |
| 363 | temp_ptr = cfg_get_vendor_ie_ptr_from_oui(mac_ctx, |
| 364 | SIR_MAC_QCOM_VENDOR_OUI, |
| 365 | SIR_MAC_QCOM_VENDOR_SIZE, |
| 366 | ((uint8_t *)&node->BssDescriptor.ieFields), |
| 367 | total_ie_len); |
| 368 | |
| 369 | if (temp_ptr) { |
| 370 | avoid_ch_ie = (struct sAvoidChannelIE *)temp_ptr; |
| 371 | if (avoid_ch_ie->type != QCOM_VENDOR_IE_MCC_AVOID_CH) |
| 372 | continue; |
| 373 | |
| 374 | sap_ctx->sap_detected_avoid_ch_ie.present = 1; |
| 375 | CDF_TRACE(CDF_MODULE_ID_SAP, |
| 376 | CDF_TRACE_LEVEL_DEBUG, |
| 377 | "Q2Q IE - avoid ch %d", |
| 378 | avoid_ch_ie->channel); |
| 379 | /* add this channel to to_avoid channel list */ |
| 380 | sap_check_n_add_channel(sap_ctx, |
| 381 | avoid_ch_ie->channel); |
| 382 | sap_check_n_add_overlapped_chnls(sap_ctx, |
| 383 | avoid_ch_ie->channel); |
| 384 | /* |
| 385 | * Mark weight of these channel present in IE to MAX |
| 386 | * so that ACS logic will to avoid thse channels |
| 387 | */ |
| 388 | for (i = 0; i < spect_info->numSpectChans; i++) |
| 389 | if (spect_ch[i].chNum == avoid_ch_ie->channel) { |
| 390 | /* |
| 391 | * weight is set more than max so that, |
| 392 | * in the case of other channels being |
| 393 | * assigned max weight due to noise, |
| 394 | * they may be preferred over channels |
| 395 | * with Q2Q IE. |
| 396 | */ |
| 397 | spect_ch[i].weight = SAP_ACS_WEIGHT_MAX + 1; |
| 398 | spect_ch[i].weight_copy = |
| 399 | SAP_ACS_WEIGHT_MAX + 1; |
| 400 | break; |
| 401 | } |
| 402 | } /* if (temp_ptr) */ |
| 403 | node = sme_scan_result_get_next(hal, scan_result); |
| 404 | } |
| 405 | } |
| 406 | #endif /* FEATURE_AP_MCC_CH_AVOIDANCE */ |
| 407 | |
| 408 | #ifdef FEATURE_WLAN_CH_AVOID |
| 409 | /*========================================================================== |
| 410 | FUNCTION sap_update_unsafe_channel_list |
| 411 | |
| 412 | DESCRIPTION |
| 413 | Function Undate unsafe channel list table |
| 414 | |
| 415 | DEPENDENCIES |
| 416 | NA. |
| 417 | |
| 418 | IN |
| 419 | SapContext pointer |
| 420 | |
| 421 | RETURN VALUE |
| 422 | NULL |
| 423 | ============================================================================*/ |
| 424 | #ifdef CONFIG_CNSS |
| 425 | void sap_update_unsafe_channel_list(ptSapContext pSapCtx) |
| 426 | { |
| 427 | uint16_t i, j; |
| 428 | uint16_t unsafe_channel_list[NUM_20MHZ_RF_CHANNELS]; |
| 429 | uint16_t unsafe_channel_count = 0; |
| 430 | |
| 431 | /* Flush, default set all channel safe */ |
| 432 | for (i = 0; i < NUM_20MHZ_RF_CHANNELS; i++) { |
| 433 | safe_channels[i].isSafe = true; |
| 434 | } |
| 435 | |
| 436 | /* Try to find unsafe channel */ |
Ryan Hsu | 4252a2f | 2016-01-05 11:18:24 -0800 | [diff] [blame^] | 437 | #if defined(FEATURE_WLAN_STA_AP_MODE_DFS_DISABLE) |
Prakash Dhavali | 7090c5f | 2015-11-02 17:55:19 -0800 | [diff] [blame] | 438 | for (i = 0; i < NUM_20MHZ_RF_CHANNELS; i++) { |
| 439 | if (pSapCtx->dfs_ch_disable == true) { |
| 440 | if (CDS_IS_DFS_CH(safe_channels[i].channelNumber)) { |
| 441 | safe_channels[i].isSafe = false; |
| 442 | CDF_TRACE(CDF_MODULE_ID_SAP, |
| 443 | CDF_TRACE_LEVEL_INFO_HIGH, |
| 444 | "%s: DFS Ch %d is not safe in" |
| 445 | " Concurrent mode", |
| 446 | __func__, |
| 447 | safe_channels[i].channelNumber); |
| 448 | } |
| 449 | } |
| 450 | } |
| 451 | #endif |
| 452 | |
| 453 | cnss_get_wlan_unsafe_channel(unsafe_channel_list, |
| 454 | &unsafe_channel_count, |
| 455 | sizeof(unsafe_channel_list)); |
| 456 | |
| 457 | for (i = 0; i < unsafe_channel_count; i++) { |
| 458 | for (j = 0; j < NUM_20MHZ_RF_CHANNELS; j++) { |
| 459 | if (safe_channels[j].channelNumber == |
| 460 | unsafe_channel_list[i]) { |
| 461 | /* Found unsafe channel, update it */ |
| 462 | safe_channels[j].isSafe = false; |
| 463 | CDF_TRACE(CDF_MODULE_ID_SAP, |
| 464 | CDF_TRACE_LEVEL_ERROR, |
| 465 | FL("CH %d is not safe"), |
| 466 | unsafe_channel_list[i]); |
| 467 | break; |
| 468 | } |
| 469 | } |
| 470 | } |
| 471 | |
| 472 | return; |
| 473 | } |
| 474 | #else |
| 475 | void sap_update_unsafe_channel_list(ptSapContext pSapCtx) |
| 476 | { |
| 477 | CDF_TRACE(CDF_MODULE_ID_SAP, CDF_TRACE_LEVEL_ERROR, |
| 478 | "%s: Not implemented", __func__); |
| 479 | return; |
| 480 | } |
| 481 | #endif |
| 482 | |
| 483 | #endif /* FEATURE_WLAN_CH_AVOID */ |
| 484 | |
| 485 | /*========================================================================== |
| 486 | FUNCTION sap_cleanup_channel_list |
| 487 | |
| 488 | DESCRIPTION |
| 489 | Function sap_cleanup_channel_list frees up the memory allocated to the channel list. |
| 490 | |
| 491 | DEPENDENCIES |
| 492 | NA. |
| 493 | |
| 494 | PARAMETERS |
| 495 | |
| 496 | IN |
| 497 | NULL |
| 498 | |
| 499 | RETURN VALUE |
| 500 | NULL |
| 501 | ============================================================================*/ |
| 502 | |
Ryan Hsu | 4252a2f | 2016-01-05 11:18:24 -0800 | [diff] [blame^] | 503 | void sap_cleanup_channel_list(void *p_cds_gctx) |
| 504 | { |
Prakash Dhavali | 7090c5f | 2015-11-02 17:55:19 -0800 | [diff] [blame] | 505 | ptSapContext pSapCtx; |
| 506 | |
| 507 | CDF_TRACE(CDF_MODULE_ID_SAP, CDF_TRACE_LEVEL_INFO, |
| 508 | "Cleaning up the channel list structure"); |
| 509 | |
| 510 | if (NULL == p_cds_gctx) { |
| 511 | CDF_TRACE(CDF_MODULE_ID_SAP, CDF_TRACE_LEVEL_FATAL, |
| 512 | "SAP Global Context is NULL"); |
| 513 | return; |
| 514 | } |
| 515 | |
| 516 | pSapCtx = CDS_GET_SAP_CB(p_cds_gctx); |
| 517 | if (NULL == pSapCtx) { |
| 518 | CDF_TRACE(CDF_MODULE_ID_SAP, CDF_TRACE_LEVEL_FATAL, |
| 519 | "SAP Context is NULL"); |
| 520 | return; |
| 521 | } |
| 522 | |
| 523 | pSapCtx->SapChnlList.numChannel = 0; |
| 524 | if (pSapCtx->SapChnlList.channelList) { |
| 525 | cdf_mem_free(pSapCtx->SapChnlList.channelList); |
| 526 | pSapCtx->SapChnlList.channelList = NULL; |
| 527 | } |
| 528 | |
| 529 | pSapCtx->SapAllChnlList.numChannel = 0; |
| 530 | if (pSapCtx->SapAllChnlList.channelList) { |
| 531 | cdf_mem_free(pSapCtx->SapAllChnlList.channelList); |
| 532 | pSapCtx->SapAllChnlList.channelList = NULL; |
| 533 | } |
| 534 | } |
| 535 | |
| 536 | /** |
| 537 | * sap_select_preferred_channel_from_channel_list() - to calc best cahnnel |
| 538 | * @best_chnl: best channel already calculated among all the chanels |
| 539 | * @sap_ctx: sap context |
| 540 | * @spectinfo_param: Pointer to tSapChSelSpectInfo structure |
| 541 | * |
| 542 | * This function calculates the best channel among the configured channel list. |
| 543 | * If channel list not configured then returns the best channel calculated |
| 544 | * among all the channel list. |
| 545 | * |
| 546 | * Return: uint8_t best channel |
| 547 | */ |
| 548 | uint8_t sap_select_preferred_channel_from_channel_list(uint8_t best_chnl, |
| 549 | ptSapContext sap_ctx, |
| 550 | tSapChSelSpectInfo *spectinfo_param) |
| 551 | { |
| 552 | uint8_t i = 0; |
| 553 | |
| 554 | /* |
| 555 | * If Channel List is not Configured don't do anything |
| 556 | * Else return the Best Channel from the Channel List |
| 557 | */ |
| 558 | if ((NULL == sap_ctx->acs_cfg->ch_list) || |
| 559 | (NULL == spectinfo_param) || |
| 560 | (0 == sap_ctx->acs_cfg->ch_list_count)) |
| 561 | return best_chnl; |
| 562 | |
| 563 | if (best_chnl <= 0 || best_chnl > 252) |
| 564 | return SAP_CHANNEL_NOT_SELECTED; |
| 565 | |
| 566 | /* Select the best channel from allowed list */ |
| 567 | for (i = 0; i < sap_ctx->acs_cfg->ch_list_count; i++) { |
| 568 | if (sap_ctx->acs_cfg->ch_list[i] == best_chnl) { |
| 569 | CDF_TRACE(CDF_MODULE_ID_SAP, |
| 570 | CDF_TRACE_LEVEL_INFO_HIGH, |
| 571 | "Best channel is: %d", |
| 572 | best_chnl); |
| 573 | return best_chnl; |
| 574 | } |
| 575 | } |
| 576 | |
| 577 | return SAP_CHANNEL_NOT_SELECTED; |
| 578 | } |
| 579 | |
| 580 | /*========================================================================== |
| 581 | FUNCTION sap_chan_sel_init |
| 582 | |
| 583 | DESCRIPTION |
| 584 | Function sap_chan_sel_init allocates the memory, intializes the |
| 585 | structures used by the channel selection algorithm |
| 586 | |
| 587 | DEPENDENCIES |
| 588 | NA. |
| 589 | |
| 590 | PARAMETERS |
| 591 | |
| 592 | IN |
| 593 | halHandle : Pointer to tHalHandle |
| 594 | *pSpectInfoParams : Pointer to tSapChSelSpectInfo structure |
| 595 | pSapCtx : Pointer to SAP Context |
| 596 | |
| 597 | RETURN VALUE |
| 598 | bool: Success or FAIL |
| 599 | |
| 600 | SIDE EFFECTS |
| 601 | ============================================================================*/ |
| 602 | bool sap_chan_sel_init(tHalHandle halHandle, |
| 603 | tSapChSelSpectInfo *pSpectInfoParams, ptSapContext pSapCtx) |
| 604 | { |
| 605 | tSapSpectChInfo *pSpectCh = NULL; |
| 606 | uint8_t *pChans = NULL; |
| 607 | uint16_t channelnum = 0; |
| 608 | tpAniSirGlobal pMac = PMAC_STRUCT(halHandle); |
| 609 | bool chSafe = true; |
| 610 | #ifdef FEATURE_WLAN_CH_AVOID |
| 611 | uint16_t i; |
| 612 | #endif |
| 613 | uint32_t dfs_master_cap_enabled; |
| 614 | bool include_dfs_ch = true; |
| 615 | |
| 616 | CDF_TRACE(CDF_MODULE_ID_SAP, CDF_TRACE_LEVEL_INFO_HIGH, "In %s", |
| 617 | __func__); |
| 618 | |
| 619 | pSpectInfoParams->numSpectChans = |
| 620 | pMac->scan.base_channels.numChannels; |
| 621 | |
| 622 | /* Allocate memory for weight computation of 2.4GHz */ |
| 623 | pSpectCh = |
| 624 | (tSapSpectChInfo *) cdf_mem_malloc((pSpectInfoParams->numSpectChans) |
| 625 | * sizeof(*pSpectCh)); |
| 626 | |
| 627 | if (pSpectCh == NULL) { |
| 628 | CDF_TRACE(CDF_MODULE_ID_SAP, CDF_TRACE_LEVEL_ERROR, |
| 629 | "In %s, CDF_MALLOC_ERR", __func__); |
| 630 | return eSAP_FALSE; |
| 631 | } |
| 632 | |
| 633 | cdf_mem_zero(pSpectCh, |
| 634 | (pSpectInfoParams->numSpectChans) * sizeof(*pSpectCh)); |
| 635 | |
| 636 | /* Initialize the pointers in the DfsParams to the allocated memory */ |
| 637 | pSpectInfoParams->pSpectCh = pSpectCh; |
| 638 | |
| 639 | pChans = pMac->scan.base_channels.channelList; |
| 640 | |
Ryan Hsu | 4252a2f | 2016-01-05 11:18:24 -0800 | [diff] [blame^] | 641 | #if defined(FEATURE_WLAN_STA_AP_MODE_DFS_DISABLE) |
Prakash Dhavali | 7090c5f | 2015-11-02 17:55:19 -0800 | [diff] [blame] | 642 | if (pSapCtx->dfs_ch_disable == true) |
| 643 | include_dfs_ch = false; |
| 644 | #endif |
| 645 | sme_cfg_get_int(halHandle, WNI_CFG_DFS_MASTER_ENABLED, |
| 646 | &dfs_master_cap_enabled); |
| 647 | if (dfs_master_cap_enabled == 0) |
| 648 | include_dfs_ch = false; |
| 649 | |
| 650 | /* Fill the channel number in the spectrum in the operating freq band */ |
| 651 | for (channelnum = 0; |
| 652 | channelnum < pSpectInfoParams->numSpectChans; |
Edhar, Mahesh Kumar | 4f66067 | 2015-10-30 11:53:26 +0530 | [diff] [blame] | 653 | channelnum++, pChans++, pSpectCh++) { |
Prakash Dhavali | 7090c5f | 2015-11-02 17:55:19 -0800 | [diff] [blame] | 654 | chSafe = true; |
| 655 | |
| 656 | /* check if the channel is in NOL blacklist */ |
| 657 | if (sap_dfs_is_channel_in_nol_list(pSapCtx, *pChans, |
| 658 | PHY_SINGLE_CHANNEL_CENTERED)) { |
| 659 | CDF_TRACE(CDF_MODULE_ID_SAP, CDF_TRACE_LEVEL_INFO_HIGH, |
| 660 | "In %s, Ch %d is in NOL list", __func__, |
| 661 | *pChans); |
| 662 | chSafe = false; |
| 663 | continue; |
| 664 | } |
| 665 | |
| 666 | if (include_dfs_ch == false) { |
| 667 | if (CDS_IS_DFS_CH(*pChans)) { |
| 668 | chSafe = false; |
| 669 | CDF_TRACE(CDF_MODULE_ID_SAP, |
| 670 | CDF_TRACE_LEVEL_INFO_HIGH, |
| 671 | "In %s, DFS Ch %d not considered for ACS", |
| 672 | __func__, *pChans); |
| 673 | continue; |
| 674 | } |
| 675 | } |
| 676 | |
| 677 | #ifdef FEATURE_WLAN_CH_AVOID |
| 678 | for (i = 0; i < NUM_20MHZ_RF_CHANNELS; i++) { |
| 679 | if ((safe_channels[i].channelNumber == *pChans) && |
| 680 | (false == safe_channels[i].isSafe)) { |
| 681 | CDF_TRACE(CDF_MODULE_ID_SAP, |
| 682 | CDF_TRACE_LEVEL_INFO_HIGH, |
| 683 | "In %s, Ch %d is not safe", __func__, |
| 684 | *pChans); |
| 685 | chSafe = false; |
| 686 | break; |
| 687 | } |
| 688 | } |
| 689 | #endif /* FEATURE_WLAN_CH_AVOID */ |
| 690 | |
| 691 | /* OFDM rates are not supported on channel 14 */ |
| 692 | if (*pChans == 14 && |
| 693 | eCSR_DOT11_MODE_11b != pSapCtx->csr_roamProfile.phyMode) { |
Prakash Dhavali | 7090c5f | 2015-11-02 17:55:19 -0800 | [diff] [blame] | 694 | continue; |
| 695 | } |
| 696 | |
| 697 | if (true == chSafe) { |
| 698 | pSpectCh->chNum = *pChans; |
| 699 | pSpectCh->valid = eSAP_TRUE; |
| 700 | pSpectCh->rssiAgr = SOFTAP_MIN_RSSI; /* Initialise for all channels */ |
| 701 | pSpectCh->channelWidth = SOFTAP_HT20_CHANNELWIDTH; /* Initialise 20MHz for all the Channels */ |
| 702 | } |
Prakash Dhavali | 7090c5f | 2015-11-02 17:55:19 -0800 | [diff] [blame] | 703 | } |
| 704 | return eSAP_TRUE; |
| 705 | } |
| 706 | |
| 707 | /*========================================================================== |
| 708 | FUNCTION sapweight_rssi_count |
| 709 | |
| 710 | DESCRIPTION |
| 711 | Function weightRssiCount calculates the channel weight due to rssi |
| 712 | and data count(here number of BSS observed) |
| 713 | |
| 714 | DEPENDENCIES |
| 715 | NA. |
| 716 | |
| 717 | PARAMETERS |
| 718 | |
| 719 | IN |
| 720 | rssi : Max signal strength receieved from a BSS for the channel |
| 721 | count : Number of BSS observed in the channel |
| 722 | |
| 723 | RETURN VALUE |
| 724 | uint32_t : Calculated channel weight based on above two |
| 725 | |
| 726 | SIDE EFFECTS |
| 727 | ============================================================================*/ |
| 728 | uint32_t sapweight_rssi_count(int8_t rssi, uint16_t count) |
| 729 | { |
| 730 | int32_t rssiWeight = 0; |
| 731 | int32_t countWeight = 0; |
| 732 | uint32_t rssicountWeight = 0; |
| 733 | |
| 734 | /* Weight from RSSI */ |
| 735 | rssiWeight = SOFTAP_RSSI_WEIGHT * (rssi - SOFTAP_MIN_RSSI) |
| 736 | / (SOFTAP_MAX_RSSI - SOFTAP_MIN_RSSI); |
| 737 | |
| 738 | if (rssiWeight > SOFTAP_RSSI_WEIGHT) |
| 739 | rssiWeight = SOFTAP_RSSI_WEIGHT; |
| 740 | else if (rssiWeight < 0) |
| 741 | rssiWeight = 0; |
| 742 | |
| 743 | /* Weight from data count */ |
| 744 | countWeight = SOFTAP_COUNT_WEIGHT * (count - SOFTAP_MIN_COUNT) |
| 745 | / (SOFTAP_MAX_COUNT - SOFTAP_MIN_COUNT); |
| 746 | |
| 747 | if (countWeight > SOFTAP_COUNT_WEIGHT) |
| 748 | countWeight = SOFTAP_COUNT_WEIGHT; |
| 749 | |
| 750 | rssicountWeight = rssiWeight + countWeight; |
| 751 | |
| 752 | CDF_TRACE(CDF_MODULE_ID_SAP, CDF_TRACE_LEVEL_INFO_HIGH, |
| 753 | "In %s, rssiWeight=%d, countWeight=%d, rssicountWeight=%d", |
| 754 | __func__, rssiWeight, countWeight, rssicountWeight); |
| 755 | |
| 756 | return rssicountWeight; |
| 757 | } |
| 758 | |
| 759 | /** |
| 760 | * sap_update_rssi_bsscount() - updates bss count and rssi effect. |
| 761 | * |
| 762 | * @pSpectCh: Channel Information |
| 763 | * @offset: Channel Offset |
| 764 | * @sap_24g: Channel is in 2.4G or 5G |
| 765 | * |
| 766 | * sap_update_rssi_bsscount updates bss count and rssi effect based |
| 767 | * on the channel offset. |
| 768 | * |
| 769 | * Return: None. |
| 770 | */ |
| 771 | |
| 772 | void sap_update_rssi_bsscount(tSapSpectChInfo *pSpectCh, int32_t offset, |
| 773 | bool sap_24g) |
| 774 | { |
| 775 | tSapSpectChInfo *pExtSpectCh = NULL; |
| 776 | int32_t rssi, rsssi_effect; |
| 777 | |
| 778 | pExtSpectCh = (pSpectCh + offset); |
| 779 | if (pExtSpectCh != NULL) { |
| 780 | ++pExtSpectCh->bssCount; |
| 781 | switch (offset) { |
| 782 | case -1: |
| 783 | case 1: |
| 784 | rsssi_effect = sap_24g ? |
| 785 | SAP_24GHZ_FIRST_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY : |
| 786 | SAP_SUBBAND1_RSSI_EFFECT_PRIMARY; |
| 787 | break; |
| 788 | case -2: |
| 789 | case 2: |
| 790 | rsssi_effect = sap_24g ? |
| 791 | SAP_24GHZ_SEC_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY : |
| 792 | SAP_SUBBAND2_RSSI_EFFECT_PRIMARY; |
| 793 | break; |
| 794 | case -3: |
| 795 | case 3: |
| 796 | rsssi_effect = sap_24g ? |
| 797 | SAP_24GHZ_THIRD_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY : |
| 798 | SAP_SUBBAND3_RSSI_EFFECT_PRIMARY; |
| 799 | break; |
| 800 | case -4: |
| 801 | case 4: |
Kiran Kumar Lokere | b3d8b5b | 2015-10-06 19:33:42 -0700 | [diff] [blame] | 802 | rsssi_effect = sap_24g ? |
| 803 | SAP_24GHZ_FOURTH_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY : |
| 804 | SAP_SUBBAND4_RSSI_EFFECT_PRIMARY; |
| 805 | break; |
| 806 | case -5: |
| 807 | case 5: |
| 808 | rsssi_effect = SAP_SUBBAND5_RSSI_EFFECT_PRIMARY; |
| 809 | break; |
| 810 | case -6: |
| 811 | case 6: |
| 812 | rsssi_effect = SAP_SUBBAND6_RSSI_EFFECT_PRIMARY; |
| 813 | break; |
| 814 | case -7: |
| 815 | case 7: |
| 816 | rsssi_effect = SAP_SUBBAND7_RSSI_EFFECT_PRIMARY; |
Prakash Dhavali | 7090c5f | 2015-11-02 17:55:19 -0800 | [diff] [blame] | 817 | break; |
| 818 | default: |
| 819 | rsssi_effect = 0; |
| 820 | break; |
| 821 | } |
| 822 | |
| 823 | rssi = pSpectCh->rssiAgr + rsssi_effect; |
| 824 | if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi)) |
| 825 | pExtSpectCh->rssiAgr = rssi; |
| 826 | if (pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI) |
| 827 | pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI; |
| 828 | } |
| 829 | } |
| 830 | |
| 831 | /** |
| 832 | * sap_upd_chan_spec_params() - sap_upd_chan_spec_params |
| 833 | * updates channel parameters obtained from Beacon |
| 834 | * @pBeaconStruct Beacon strucutre populated by parse_beacon function |
| 835 | * @channelWidth Channel width |
| 836 | * @secondaryChannelOffset Secondary Channel Offset |
| 837 | * @vhtSupport If channel supports VHT |
| 838 | * @centerFreq Central frequency for the given channel. |
| 839 | * |
| 840 | * sap_upd_chan_spec_params updates the spectrum channels based on the |
| 841 | * pBeaconStruct obtained from Beacon IE |
| 842 | * |
| 843 | * Return: NA. |
| 844 | */ |
| 845 | |
| 846 | void sap_upd_chan_spec_params(tSirProbeRespBeacon *pBeaconStruct, |
| 847 | uint16_t *channelWidth, |
| 848 | uint16_t *secondaryChannelOffset, |
| 849 | uint16_t *vhtSupport, |
Kiran Kumar Lokere | b3d8b5b | 2015-10-06 19:33:42 -0700 | [diff] [blame] | 850 | uint16_t *centerFreq, |
| 851 | uint16_t *centerFreq_2) |
Prakash Dhavali | 7090c5f | 2015-11-02 17:55:19 -0800 | [diff] [blame] | 852 | { |
| 853 | if (NULL == pBeaconStruct) { |
| 854 | CDF_TRACE(CDF_MODULE_ID_SAP, CDF_TRACE_LEVEL_ERROR, |
| 855 | FL("pBeaconStruct is NULL")); |
| 856 | return; |
| 857 | } |
| 858 | |
| 859 | if (pBeaconStruct->HTCaps.present && pBeaconStruct->HTInfo.present) { |
| 860 | *channelWidth = pBeaconStruct->HTCaps.supportedChannelWidthSet; |
Kiran Kumar Lokere | b3d8b5b | 2015-10-06 19:33:42 -0700 | [diff] [blame] | 861 | *secondaryChannelOffset = |
| 862 | pBeaconStruct->HTInfo.secondaryChannelOffset; |
| 863 | if (!pBeaconStruct->VHTOperation.present) |
| 864 | return; |
| 865 | *vhtSupport = pBeaconStruct->VHTOperation.present; |
| 866 | if (pBeaconStruct->VHTOperation.chanWidth) { |
| 867 | *centerFreq = |
| 868 | pBeaconStruct->VHTOperation.chanCenterFreqSeg1; |
| 869 | *centerFreq_2 = |
| 870 | pBeaconStruct->VHTOperation.chanCenterFreqSeg2; |
| 871 | /* |
| 872 | * LHS follows tSirMacHTChannelWidth, while RHS follows |
| 873 | * WNI_CFG_VHT_CHANNEL_WIDTH_X format hence following |
| 874 | * adjustment |
| 875 | */ |
| 876 | *channelWidth = |
| 877 | pBeaconStruct->VHTOperation.chanWidth + 1; |
Prakash Dhavali | 7090c5f | 2015-11-02 17:55:19 -0800 | [diff] [blame] | 878 | |
Prakash Dhavali | 7090c5f | 2015-11-02 17:55:19 -0800 | [diff] [blame] | 879 | } |
| 880 | } |
| 881 | } |
| 882 | |
| 883 | /** |
Kiran Kumar Lokere | b3d8b5b | 2015-10-06 19:33:42 -0700 | [diff] [blame] | 884 | * sap_update_rssi_bsscount_vht_5G() - updates bss count and rssi effect. |
| 885 | * |
| 886 | * @pSpectCh: Channel Information |
| 887 | * @offset: Channel Offset |
| 888 | * @num_ch: no.of channels |
| 889 | * |
| 890 | * sap_update_rssi_bsscount_vht_5G updates bss count and rssi effect based |
| 891 | * on the channel offset. |
| 892 | * |
| 893 | * Return: None. |
| 894 | */ |
| 895 | |
| 896 | void sap_update_rssi_bsscount_vht_5G(tSapSpectChInfo *spect_ch, int32_t offset, |
| 897 | uint16_t num_ch) |
| 898 | { |
| 899 | int32_t ch_offset; |
| 900 | uint16_t i, cnt; |
| 901 | |
| 902 | if (!offset) |
| 903 | return; |
| 904 | if (offset > 0) |
| 905 | cnt = num_ch; |
| 906 | else |
| 907 | cnt = num_ch + 1; |
| 908 | for (i = 0; i < cnt; i++) { |
| 909 | ch_offset = offset + i; |
| 910 | if (ch_offset == 0) |
| 911 | continue; |
| 912 | sap_update_rssi_bsscount(spect_ch, ch_offset, false); |
| 913 | } |
| 914 | } |
| 915 | /** |
Prakash Dhavali | 7090c5f | 2015-11-02 17:55:19 -0800 | [diff] [blame] | 916 | * sap_interference_rssi_count_5G() - sap_interference_rssi_count |
| 917 | * considers the Adjacent channel rssi and |
| 918 | * data count(here number of BSS observed) |
| 919 | * @spect_ch: Channel Information |
| 920 | * @chan_width: Channel width parsed from beacon IE |
| 921 | * @sec_chan_offset: Secondary Channel Offset |
| 922 | * @center_freq: Central frequency for the given channel. |
| 923 | * @channel_id: channel_id |
| 924 | * |
| 925 | * sap_interference_rssi_count_5G considers the Adjacent channel rssi |
| 926 | * and data count(here number of BSS observed) |
| 927 | * |
| 928 | * Return: NA. |
| 929 | */ |
| 930 | |
| 931 | void sap_interference_rssi_count_5G(tSapSpectChInfo *spect_ch, |
| 932 | uint16_t chan_width, |
| 933 | uint16_t sec_chan_offset, |
Kiran Kumar Lokere | b3d8b5b | 2015-10-06 19:33:42 -0700 | [diff] [blame] | 934 | uint16_t center_freq, |
| 935 | uint16_t center_freq_2, |
| 936 | uint8_t channel_id) |
Prakash Dhavali | 7090c5f | 2015-11-02 17:55:19 -0800 | [diff] [blame] | 937 | { |
Kiran Kumar Lokere | b3d8b5b | 2015-10-06 19:33:42 -0700 | [diff] [blame] | 938 | uint16_t num_ch; |
| 939 | int32_t offset = 0; |
Prakash Dhavali | 7090c5f | 2015-11-02 17:55:19 -0800 | [diff] [blame] | 940 | if (NULL == spect_ch) { |
| 941 | CDF_TRACE(CDF_MODULE_ID_SAP, CDF_TRACE_LEVEL_ERROR, |
| 942 | FL("spect_ch is NULL")); |
| 943 | return; |
| 944 | } |
| 945 | |
| 946 | /* Updating the received ChannelWidth */ |
| 947 | if (spect_ch->channelWidth != chan_width) |
| 948 | spect_ch->channelWidth = chan_width; |
| 949 | /* If received ChannelWidth is other than HT20, |
| 950 | * we need to update the extension channel Params as well |
| 951 | * chan_width == 0, HT20 |
| 952 | * chan_width == 1, HT40 |
| 953 | * chan_width == 2, VHT80 |
Kiran Kumar Lokere | b3d8b5b | 2015-10-06 19:33:42 -0700 | [diff] [blame] | 954 | * chan_width == 3, VHT160 |
Prakash Dhavali | 7090c5f | 2015-11-02 17:55:19 -0800 | [diff] [blame] | 955 | */ |
| 956 | |
| 957 | switch (spect_ch->channelWidth) { |
| 958 | case eHT_CHANNEL_WIDTH_40MHZ: /* HT40 */ |
| 959 | switch (sec_chan_offset) { |
| 960 | /* Above the Primary Channel */ |
| 961 | case PHY_DOUBLE_CHANNEL_LOW_PRIMARY: |
| 962 | sap_update_rssi_bsscount(spect_ch, 1, false); |
Kiran Kumar Lokere | b3d8b5b | 2015-10-06 19:33:42 -0700 | [diff] [blame] | 963 | return; |
Prakash Dhavali | 7090c5f | 2015-11-02 17:55:19 -0800 | [diff] [blame] | 964 | |
| 965 | /* Below the Primary channel */ |
| 966 | case PHY_DOUBLE_CHANNEL_HIGH_PRIMARY: |
| 967 | sap_update_rssi_bsscount(spect_ch, -1, false); |
Kiran Kumar Lokere | b3d8b5b | 2015-10-06 19:33:42 -0700 | [diff] [blame] | 968 | return; |
| 969 | } |
| 970 | return; |
| 971 | case eHT_CHANNEL_WIDTH_80MHZ: /* VHT80 */ |
| 972 | num_ch = 3; |
| 973 | if ((center_freq - channel_id) == 6) { |
| 974 | offset = 1; |
| 975 | } else if ((center_freq - channel_id) == 2) { |
| 976 | offset = -1; |
| 977 | } else if ((center_freq - channel_id) == -2) { |
| 978 | offset = -2; |
| 979 | } else if ((center_freq - channel_id) == -6) { |
| 980 | offset = -3; |
Prakash Dhavali | 7090c5f | 2015-11-02 17:55:19 -0800 | [diff] [blame] | 981 | } |
| 982 | break; |
Kiran Kumar Lokere | b3d8b5b | 2015-10-06 19:33:42 -0700 | [diff] [blame] | 983 | case eHT_CHANNEL_WIDTH_160MHZ: /* VHT160 */ |
| 984 | num_ch = 7; |
| 985 | if ((center_freq - channel_id) == 14) |
| 986 | offset = 1; |
| 987 | else if ((center_freq - channel_id) == 10) |
| 988 | offset = -1; |
| 989 | else if ((center_freq - channel_id) == 6) |
| 990 | offset = -2; |
| 991 | else if ((center_freq - channel_id) == 2) |
| 992 | offset = -3; |
| 993 | else if ((center_freq - channel_id) == -2) |
| 994 | offset = -4; |
| 995 | else if ((center_freq - channel_id) == -6) |
| 996 | offset = -5; |
| 997 | else if ((center_freq - channel_id) == -10) |
| 998 | offset = -6; |
| 999 | else if ((center_freq - channel_id) == -14) |
| 1000 | offset = -7; |
Prakash Dhavali | 7090c5f | 2015-11-02 17:55:19 -0800 | [diff] [blame] | 1001 | break; |
| 1002 | default: |
Kiran Kumar Lokere | b3d8b5b | 2015-10-06 19:33:42 -0700 | [diff] [blame] | 1003 | return; |
Prakash Dhavali | 7090c5f | 2015-11-02 17:55:19 -0800 | [diff] [blame] | 1004 | } |
Kiran Kumar Lokere | b3d8b5b | 2015-10-06 19:33:42 -0700 | [diff] [blame] | 1005 | sap_update_rssi_bsscount_vht_5G(spect_ch, offset, num_ch); |
Prakash Dhavali | 7090c5f | 2015-11-02 17:55:19 -0800 | [diff] [blame] | 1006 | } |
| 1007 | |
| 1008 | /** |
| 1009 | * sap_interference_rssi_count() - sap_interference_rssi_count |
| 1010 | * considers the Adjacent channel rssi |
| 1011 | * and data count(here number of BSS observed) |
| 1012 | * @spect_ch Channel Information |
| 1013 | * |
| 1014 | * sap_interference_rssi_count considers the Adjacent channel rssi |
| 1015 | * and data count(here number of BSS observed) |
| 1016 | * |
| 1017 | * Return: None. |
| 1018 | */ |
| 1019 | |
| 1020 | void sap_interference_rssi_count(tSapSpectChInfo *spect_ch) |
| 1021 | { |
| 1022 | if (NULL == spect_ch) { |
| 1023 | CDF_TRACE(CDF_MODULE_ID_SAP, CDF_TRACE_LEVEL_ERROR, |
| 1024 | "%s: spect_ch is NULL", __func__); |
| 1025 | return; |
| 1026 | } |
| 1027 | |
| 1028 | switch (spect_ch->chNum) { |
| 1029 | case CHANNEL_1: |
| 1030 | sap_update_rssi_bsscount(spect_ch, 1, true); |
| 1031 | sap_update_rssi_bsscount(spect_ch, 2, true); |
| 1032 | sap_update_rssi_bsscount(spect_ch, 3, true); |
| 1033 | sap_update_rssi_bsscount(spect_ch, 4, true); |
| 1034 | break; |
| 1035 | |
| 1036 | case CHANNEL_2: |
| 1037 | sap_update_rssi_bsscount(spect_ch, -1, true); |
| 1038 | sap_update_rssi_bsscount(spect_ch, 1, true); |
| 1039 | sap_update_rssi_bsscount(spect_ch, 2, true); |
| 1040 | sap_update_rssi_bsscount(spect_ch, 3, true); |
| 1041 | sap_update_rssi_bsscount(spect_ch, 4, true); |
| 1042 | break; |
| 1043 | case CHANNEL_3: |
| 1044 | sap_update_rssi_bsscount(spect_ch, -2, true); |
| 1045 | sap_update_rssi_bsscount(spect_ch, -1, true); |
| 1046 | sap_update_rssi_bsscount(spect_ch, 1, true); |
| 1047 | sap_update_rssi_bsscount(spect_ch, 2, true); |
| 1048 | sap_update_rssi_bsscount(spect_ch, 3, true); |
| 1049 | sap_update_rssi_bsscount(spect_ch, 4, true); |
| 1050 | break; |
| 1051 | case CHANNEL_4: |
| 1052 | sap_update_rssi_bsscount(spect_ch, -3, true); |
| 1053 | sap_update_rssi_bsscount(spect_ch, -2, true); |
| 1054 | sap_update_rssi_bsscount(spect_ch, -1, true); |
| 1055 | sap_update_rssi_bsscount(spect_ch, 1, true); |
| 1056 | sap_update_rssi_bsscount(spect_ch, 2, true); |
| 1057 | sap_update_rssi_bsscount(spect_ch, 3, true); |
| 1058 | sap_update_rssi_bsscount(spect_ch, 4, true); |
| 1059 | break; |
| 1060 | |
| 1061 | case CHANNEL_5: |
| 1062 | case CHANNEL_6: |
| 1063 | case CHANNEL_7: |
| 1064 | case CHANNEL_8: |
| 1065 | case CHANNEL_9: |
| 1066 | case CHANNEL_10: |
| 1067 | sap_update_rssi_bsscount(spect_ch, -4, true); |
| 1068 | sap_update_rssi_bsscount(spect_ch, -3, true); |
| 1069 | sap_update_rssi_bsscount(spect_ch, -2, true); |
| 1070 | sap_update_rssi_bsscount(spect_ch, -1, true); |
| 1071 | sap_update_rssi_bsscount(spect_ch, 1, true); |
| 1072 | sap_update_rssi_bsscount(spect_ch, 2, true); |
| 1073 | sap_update_rssi_bsscount(spect_ch, 3, true); |
| 1074 | sap_update_rssi_bsscount(spect_ch, 4, true); |
| 1075 | break; |
| 1076 | |
| 1077 | case CHANNEL_11: |
| 1078 | sap_update_rssi_bsscount(spect_ch, -4, true); |
| 1079 | sap_update_rssi_bsscount(spect_ch, -3, true); |
| 1080 | sap_update_rssi_bsscount(spect_ch, -2, true); |
| 1081 | sap_update_rssi_bsscount(spect_ch, -1, true); |
| 1082 | sap_update_rssi_bsscount(spect_ch, 1, true); |
| 1083 | sap_update_rssi_bsscount(spect_ch, 2, true); |
| 1084 | sap_update_rssi_bsscount(spect_ch, 3, true); |
| 1085 | break; |
| 1086 | |
| 1087 | case CHANNEL_12: |
| 1088 | sap_update_rssi_bsscount(spect_ch, -4, true); |
| 1089 | sap_update_rssi_bsscount(spect_ch, -3, true); |
| 1090 | sap_update_rssi_bsscount(spect_ch, -2, true); |
| 1091 | sap_update_rssi_bsscount(spect_ch, -1, true); |
| 1092 | sap_update_rssi_bsscount(spect_ch, 1, true); |
| 1093 | sap_update_rssi_bsscount(spect_ch, 2, true); |
| 1094 | break; |
| 1095 | |
| 1096 | case CHANNEL_13: |
| 1097 | sap_update_rssi_bsscount(spect_ch, -4, true); |
| 1098 | sap_update_rssi_bsscount(spect_ch, -3, true); |
| 1099 | sap_update_rssi_bsscount(spect_ch, -2, true); |
| 1100 | sap_update_rssi_bsscount(spect_ch, -1, true); |
| 1101 | sap_update_rssi_bsscount(spect_ch, 1, true); |
| 1102 | break; |
| 1103 | |
| 1104 | case CHANNEL_14: |
| 1105 | sap_update_rssi_bsscount(spect_ch, -4, true); |
| 1106 | sap_update_rssi_bsscount(spect_ch, -3, true); |
| 1107 | sap_update_rssi_bsscount(spect_ch, -2, true); |
| 1108 | sap_update_rssi_bsscount(spect_ch, -1, true); |
| 1109 | break; |
| 1110 | |
| 1111 | default: |
| 1112 | break; |
| 1113 | } |
| 1114 | } |
| 1115 | |
| 1116 | /*========================================================================== |
| 1117 | Function ch_in_pcl |
| 1118 | |
| 1119 | Description |
| 1120 | Check if a channel is in the preferred channel list |
| 1121 | |
| 1122 | Parameters |
| 1123 | sap_ctx SAP context pointer |
| 1124 | channel input channel number |
| 1125 | |
| 1126 | Return Value |
| 1127 | true: channel is in PCL |
| 1128 | false: channel is not in PCL |
| 1129 | ==========================================================================*/ |
| 1130 | bool ch_in_pcl(ptSapContext sap_ctx, uint8_t channel) |
| 1131 | { |
| 1132 | uint32_t i; |
| 1133 | |
| 1134 | for (i = 0; i < sap_ctx->acs_cfg->pcl_ch_count; i++) { |
| 1135 | if (channel == sap_ctx->acs_cfg->pcl_channels[i]) |
| 1136 | return true; |
| 1137 | } |
| 1138 | |
| 1139 | return false; |
| 1140 | } |
| 1141 | |
| 1142 | /*========================================================================== |
| 1143 | FUNCTION sap_compute_spect_weight |
| 1144 | |
| 1145 | DESCRIPTION |
| 1146 | Main function for computing the weight of each channel in the |
| 1147 | spectrum based on the RSSI value of the BSSes on the channel |
| 1148 | and number of BSS |
| 1149 | |
| 1150 | DEPENDENCIES |
| 1151 | NA. |
| 1152 | |
| 1153 | PARAMETERS |
| 1154 | |
| 1155 | IN |
| 1156 | pSpectInfoParams : Pointer to the tSpectInfoParams structure |
| 1157 | halHandle : Pointer to HAL handle |
| 1158 | pResult : Pointer to tScanResultHandle |
| 1159 | |
| 1160 | RETURN VALUE |
| 1161 | void : NULL |
| 1162 | |
| 1163 | SIDE EFFECTS |
| 1164 | ============================================================================*/ |
| 1165 | void sap_compute_spect_weight(tSapChSelSpectInfo *pSpectInfoParams, |
| 1166 | tHalHandle halHandle, tScanResultHandle pResult, |
| 1167 | ptSapContext sap_ctx) |
| 1168 | { |
| 1169 | int8_t rssi = 0; |
| 1170 | uint8_t chn_num = 0; |
| 1171 | uint8_t channel_id = 0; |
| 1172 | |
| 1173 | tCsrScanResultInfo *pScanResult; |
| 1174 | tSapSpectChInfo *pSpectCh = pSpectInfoParams->pSpectCh; |
| 1175 | uint32_t operatingBand; |
| 1176 | uint16_t channelWidth; |
| 1177 | uint16_t secondaryChannelOffset; |
| 1178 | uint16_t centerFreq; |
Kiran Kumar Lokere | b3d8b5b | 2015-10-06 19:33:42 -0700 | [diff] [blame] | 1179 | uint16_t centerFreq_2 = 0; |
Prakash Dhavali | 7090c5f | 2015-11-02 17:55:19 -0800 | [diff] [blame] | 1180 | uint16_t vhtSupport; |
| 1181 | uint32_t ieLen = 0; |
| 1182 | tSirProbeRespBeacon *pBeaconStruct; |
| 1183 | tpAniSirGlobal pMac = (tpAniSirGlobal) halHandle; |
| 1184 | |
| 1185 | pBeaconStruct = cdf_mem_malloc(sizeof(tSirProbeRespBeacon)); |
| 1186 | if (NULL == pBeaconStruct) { |
| 1187 | CDF_TRACE(CDF_MODULE_ID_SAP, CDF_TRACE_LEVEL_INFO_HIGH, |
| 1188 | "Unable to allocate memory in sap_compute_spect_weight\n"); |
| 1189 | return; |
| 1190 | } |
| 1191 | CDF_TRACE(CDF_MODULE_ID_SAP, CDF_TRACE_LEVEL_INFO_HIGH, |
| 1192 | "In %s, Computing spectral weight", __func__); |
| 1193 | |
| 1194 | /** |
| 1195 | * Soft AP specific channel weight calculation using DFS formula |
| 1196 | */ |
| 1197 | SET_ACS_BAND(operatingBand, sap_ctx); |
| 1198 | |
| 1199 | pScanResult = sme_scan_result_get_first(halHandle, pResult); |
| 1200 | |
| 1201 | while (pScanResult) { |
| 1202 | pSpectCh = pSpectInfoParams->pSpectCh; |
| 1203 | /* Defining the default values, so that any value will hold the default values */ |
| 1204 | channelWidth = eHT_CHANNEL_WIDTH_20MHZ; |
| 1205 | secondaryChannelOffset = PHY_SINGLE_CHANNEL_CENTERED; |
| 1206 | vhtSupport = 0; |
| 1207 | centerFreq = 0; |
| 1208 | |
| 1209 | if (pScanResult->BssDescriptor.ieFields != NULL) { |
| 1210 | ieLen = |
| 1211 | (pScanResult->BssDescriptor.length + |
| 1212 | sizeof(uint16_t) + sizeof(uint32_t) - |
| 1213 | sizeof(tSirBssDescription)); |
| 1214 | cdf_mem_set((uint8_t *) pBeaconStruct, |
| 1215 | sizeof(tSirProbeRespBeacon), 0); |
| 1216 | |
| 1217 | if ((sir_parse_beacon_ie |
Kiran Kumar Lokere | b3d8b5b | 2015-10-06 19:33:42 -0700 | [diff] [blame] | 1218 | (pMac, pBeaconStruct, (uint8_t *) |
| 1219 | (pScanResult->BssDescriptor.ieFields), |
| 1220 | ieLen)) == eSIR_SUCCESS) { |
Prakash Dhavali | 7090c5f | 2015-11-02 17:55:19 -0800 | [diff] [blame] | 1221 | sap_upd_chan_spec_params(pBeaconStruct, |
| 1222 | &channelWidth, &secondaryChannelOffset, |
Kiran Kumar Lokere | b3d8b5b | 2015-10-06 19:33:42 -0700 | [diff] [blame] | 1223 | &vhtSupport, ¢erFreq, |
| 1224 | ¢erFreq_2); |
Prakash Dhavali | 7090c5f | 2015-11-02 17:55:19 -0800 | [diff] [blame] | 1225 | } |
| 1226 | } |
| 1227 | /* Processing for each tCsrScanResultInfo in the tCsrScanResult DLink list */ |
| 1228 | for (chn_num = 0; chn_num < pSpectInfoParams->numSpectChans; |
| 1229 | chn_num++) { |
| 1230 | |
| 1231 | /* |
| 1232 | * if the Beacon has channel ID, use it other wise we will |
| 1233 | * rely on the channelIdSelf |
| 1234 | */ |
| 1235 | if (pScanResult->BssDescriptor.channelId == 0) |
| 1236 | channel_id = |
| 1237 | pScanResult->BssDescriptor.channelIdSelf; |
| 1238 | else |
| 1239 | channel_id = |
| 1240 | pScanResult->BssDescriptor.channelId; |
| 1241 | |
| 1242 | if (pSpectCh && (channel_id == pSpectCh->chNum)) { |
| 1243 | if (pSpectCh->rssiAgr < |
| 1244 | pScanResult->BssDescriptor.rssi) |
| 1245 | pSpectCh->rssiAgr = |
| 1246 | pScanResult->BssDescriptor.rssi; |
| 1247 | |
| 1248 | ++pSpectCh->bssCount; /* Increment the count of BSS */ |
| 1249 | |
| 1250 | /* |
| 1251 | * Connsidering the Extension Channel |
| 1252 | * only in a channels |
| 1253 | */ |
| 1254 | switch (operatingBand) { |
| 1255 | case eCSR_DOT11_MODE_11a: |
| 1256 | sap_interference_rssi_count_5G( |
| 1257 | pSpectCh, channelWidth, |
Kiran Kumar Lokere | b3d8b5b | 2015-10-06 19:33:42 -0700 | [diff] [blame] | 1258 | secondaryChannelOffset, |
| 1259 | centerFreq, |
| 1260 | centerFreq_2, |
Prakash Dhavali | 7090c5f | 2015-11-02 17:55:19 -0800 | [diff] [blame] | 1261 | channel_id); |
| 1262 | break; |
| 1263 | |
| 1264 | case eCSR_DOT11_MODE_11g: |
| 1265 | sap_interference_rssi_count(pSpectCh); |
| 1266 | break; |
| 1267 | |
| 1268 | case eCSR_DOT11_MODE_abg: |
| 1269 | sap_interference_rssi_count_5G( |
| 1270 | pSpectCh, channelWidth, |
Kiran Kumar Lokere | b3d8b5b | 2015-10-06 19:33:42 -0700 | [diff] [blame] | 1271 | secondaryChannelOffset, |
| 1272 | centerFreq, |
| 1273 | centerFreq_2, |
Prakash Dhavali | 7090c5f | 2015-11-02 17:55:19 -0800 | [diff] [blame] | 1274 | channel_id); |
| 1275 | sap_interference_rssi_count(pSpectCh); |
| 1276 | break; |
| 1277 | } |
| 1278 | |
| 1279 | CDF_TRACE(CDF_MODULE_ID_SAP, |
| 1280 | CDF_TRACE_LEVEL_INFO_HIGH, |
| 1281 | "In %s, bssdes.ch_self=%d, bssdes.ch_ID=%d, bssdes.rssi=%d, SpectCh.bssCount=%d, pScanResult=%p, ChannelWidth %d, secondaryChanOffset %d, center frequency %d \n", |
| 1282 | __func__, |
| 1283 | pScanResult->BssDescriptor. |
| 1284 | channelIdSelf, |
| 1285 | pScanResult->BssDescriptor.channelId, |
| 1286 | pScanResult->BssDescriptor.rssi, |
| 1287 | pSpectCh->bssCount, pScanResult, |
| 1288 | pSpectCh->channelWidth, |
| 1289 | secondaryChannelOffset, centerFreq); |
| 1290 | pSpectCh++; |
| 1291 | break; |
| 1292 | } else { |
| 1293 | pSpectCh++; |
| 1294 | } |
| 1295 | } |
| 1296 | |
| 1297 | pScanResult = sme_scan_result_get_next(halHandle, pResult); |
| 1298 | } |
| 1299 | |
| 1300 | /* Calculate the weights for all channels in the spectrum pSpectCh */ |
| 1301 | pSpectCh = pSpectInfoParams->pSpectCh; |
| 1302 | |
| 1303 | CDF_TRACE(CDF_MODULE_ID_SAP, CDF_TRACE_LEVEL_INFO_HIGH, |
| 1304 | "In %s, Spectrum Channels Weight", __func__); |
| 1305 | |
| 1306 | for (chn_num = 0; chn_num < (pSpectInfoParams->numSpectChans); |
| 1307 | chn_num++) { |
| 1308 | |
| 1309 | /* |
| 1310 | rssi : Maximum received signal strength among all BSS on that channel |
| 1311 | bssCount : Number of BSS on that channel |
| 1312 | */ |
| 1313 | |
| 1314 | rssi = (int8_t) pSpectCh->rssiAgr; |
| 1315 | if (ch_in_pcl(sap_ctx, chn_num)) |
| 1316 | rssi -= PCL_RSSI_DISCOUNT; |
| 1317 | |
| 1318 | pSpectCh->weight = |
| 1319 | SAPDFS_NORMALISE_1000 * sapweight_rssi_count(rssi, |
| 1320 | pSpectCh-> |
| 1321 | bssCount); |
| 1322 | pSpectCh->weight_copy = pSpectCh->weight; |
| 1323 | |
| 1324 | /* ------ Debug Info ------ */ |
| 1325 | CDF_TRACE(CDF_MODULE_ID_SAP, CDF_TRACE_LEVEL_INFO_HIGH, |
| 1326 | "In %s, Chan=%d Weight= %d rssiAgr=%d bssCount=%d", |
| 1327 | __func__, pSpectCh->chNum, pSpectCh->weight, |
| 1328 | pSpectCh->rssiAgr, pSpectCh->bssCount); |
| 1329 | /* ------ Debug Info ------ */ |
| 1330 | pSpectCh++; |
| 1331 | } |
| 1332 | cdf_mem_free(pBeaconStruct); |
| 1333 | } |
| 1334 | |
| 1335 | /*========================================================================== |
| 1336 | FUNCTION sap_chan_sel_exit |
| 1337 | |
| 1338 | DESCRIPTION |
| 1339 | Exit function for free out the allocated memory, to be called |
| 1340 | at the end of the dfsSelectChannel function |
| 1341 | |
| 1342 | DEPENDENCIES |
| 1343 | NA. |
| 1344 | |
| 1345 | PARAMETERS |
| 1346 | |
| 1347 | IN |
| 1348 | pSpectInfoParams : Pointer to the tSapChSelSpectInfo structure |
| 1349 | |
| 1350 | RETURN VALUE |
| 1351 | void : NULL |
| 1352 | |
| 1353 | SIDE EFFECTS |
| 1354 | ============================================================================*/ |
| 1355 | void sap_chan_sel_exit(tSapChSelSpectInfo *pSpectInfoParams) |
| 1356 | { |
| 1357 | /* Free all the allocated memory */ |
| 1358 | cdf_mem_free(pSpectInfoParams->pSpectCh); |
| 1359 | } |
| 1360 | |
| 1361 | /*========================================================================== |
| 1362 | FUNCTION sap_sort_chl_weight |
| 1363 | |
| 1364 | DESCRIPTION |
| 1365 | Funtion to sort the channels with the least weight first for 20MHz channels |
| 1366 | |
| 1367 | DEPENDENCIES |
| 1368 | NA. |
| 1369 | |
| 1370 | PARAMETERS |
| 1371 | |
| 1372 | IN |
| 1373 | pSpectInfoParams : Pointer to the tSapChSelSpectInfo structure |
| 1374 | |
| 1375 | RETURN VALUE |
| 1376 | void : NULL |
| 1377 | |
| 1378 | SIDE EFFECTS |
| 1379 | ============================================================================*/ |
| 1380 | void sap_sort_chl_weight(tSapChSelSpectInfo *pSpectInfoParams) |
| 1381 | { |
| 1382 | tSapSpectChInfo temp; |
| 1383 | |
| 1384 | tSapSpectChInfo *pSpectCh = NULL; |
| 1385 | uint32_t i = 0, j = 0, minWeightIndex = 0; |
| 1386 | |
| 1387 | pSpectCh = pSpectInfoParams->pSpectCh; |
| 1388 | for (i = 0; i < pSpectInfoParams->numSpectChans; i++) { |
| 1389 | minWeightIndex = i; |
| 1390 | for (j = i + 1; j < pSpectInfoParams->numSpectChans; j++) { |
| 1391 | if (pSpectCh[j].weight < |
| 1392 | pSpectCh[minWeightIndex].weight) { |
| 1393 | minWeightIndex = j; |
| 1394 | } |
| 1395 | } |
| 1396 | if (minWeightIndex != i) { |
| 1397 | cdf_mem_copy(&temp, &pSpectCh[minWeightIndex], |
| 1398 | sizeof(*pSpectCh)); |
| 1399 | cdf_mem_copy(&pSpectCh[minWeightIndex], &pSpectCh[i], |
| 1400 | sizeof(*pSpectCh)); |
| 1401 | cdf_mem_copy(&pSpectCh[i], &temp, sizeof(*pSpectCh)); |
| 1402 | } |
| 1403 | } |
| 1404 | } |
| 1405 | |
| 1406 | /** |
| 1407 | * sap_sort_chl_weight_ht80() - to sort the channels with the least weight |
| 1408 | * @pSpectInfoParams: Pointer to the tSapChSelSpectInfo structure |
| 1409 | * |
| 1410 | * Funtion to sort the channels with the least weight first for HT80 channels |
| 1411 | * |
| 1412 | * Return: none |
| 1413 | */ |
| 1414 | void sap_sort_chl_weight_ht80(tSapChSelSpectInfo *pSpectInfoParams) |
| 1415 | { |
| 1416 | uint8_t i, j, n; |
| 1417 | tSapSpectChInfo *pSpectInfo; |
| 1418 | uint8_t minIdx; |
| 1419 | |
| 1420 | pSpectInfo = pSpectInfoParams->pSpectCh; |
| 1421 | /* for each HT80 channel, calculate the combined weight of the |
| 1422 | four 20MHz weight */ |
| 1423 | for (i = 0; i < ARRAY_SIZE(acs_ht80_channels); i++) { |
| 1424 | for (j = 0; j < pSpectInfoParams->numSpectChans; j++) { |
| 1425 | if (pSpectInfo[j].chNum == |
| 1426 | acs_ht80_channels[i].chStartNum) |
| 1427 | break; |
| 1428 | } |
| 1429 | if (j == pSpectInfoParams->numSpectChans) |
| 1430 | continue; |
| 1431 | |
| 1432 | if (!(((pSpectInfo[j].chNum + 4) == pSpectInfo[j + 1].chNum) && |
| 1433 | ((pSpectInfo[j].chNum + 8) == |
| 1434 | pSpectInfo[j + 2].chNum) && |
| 1435 | ((pSpectInfo[j].chNum + 12) == |
| 1436 | pSpectInfo[j + 3].chNum))) { |
| 1437 | /* |
| 1438 | * some channels does not exist in pSectInfo array, |
| 1439 | * skip this channel and those in the same HT80 width |
| 1440 | */ |
| 1441 | pSpectInfo[j].weight = SAP_ACS_WEIGHT_MAX * 4; |
| 1442 | if ((pSpectInfo[j].chNum + 4) == |
| 1443 | pSpectInfo[j + 1].chNum) |
| 1444 | pSpectInfo[j + 1].weight = |
| 1445 | SAP_ACS_WEIGHT_MAX * 4; |
| 1446 | if ((pSpectInfo[j].chNum + 8) == |
| 1447 | pSpectInfo[j + 2].chNum) |
| 1448 | pSpectInfo[j + 2].weight = |
| 1449 | SAP_ACS_WEIGHT_MAX * 4; |
| 1450 | if ((pSpectInfo[j].chNum + 12) == |
| 1451 | pSpectInfo[j + 3].chNum) |
| 1452 | pSpectInfo[j + 3].weight = |
| 1453 | SAP_ACS_WEIGHT_MAX * 4; |
| 1454 | continue; |
| 1455 | } |
| 1456 | /*found the channel, add the 4 adjacent channels' weight */ |
| 1457 | acs_ht80_channels[i].weight = pSpectInfo[j].weight + |
| 1458 | pSpectInfo[j + 1].weight + pSpectInfo[j + 2].weight + |
| 1459 | pSpectInfo[j + 3].weight; |
| 1460 | /* find best channel among 4 channels as the primary channel */ |
| 1461 | if ((pSpectInfo[j].weight + pSpectInfo[j + 1].weight) < |
| 1462 | (pSpectInfo[j + 2].weight + pSpectInfo[j + 3].weight)) { |
| 1463 | /* lower 2 channels are better choice */ |
| 1464 | if (pSpectInfo[j].weight < pSpectInfo[j + 1].weight) |
| 1465 | minIdx = 0; |
| 1466 | else |
| 1467 | minIdx = 1; |
| 1468 | } else if (pSpectInfo[j + 2].weight <= |
| 1469 | pSpectInfo[j + 3].weight) { |
| 1470 | /* upper 2 channels are better choice */ |
| 1471 | minIdx = 2; |
| 1472 | } else { |
| 1473 | minIdx = 3; |
| 1474 | } |
| 1475 | |
| 1476 | /* |
| 1477 | * set all 4 channels to max value first, then reset the |
| 1478 | * best channel as the selected primary channel, update its |
| 1479 | * weightage with the combined weight value |
| 1480 | */ |
| 1481 | for (n = 0; n < 4; n++) |
| 1482 | pSpectInfo[j + n].weight = SAP_ACS_WEIGHT_MAX * 4; |
| 1483 | |
| 1484 | pSpectInfo[j + minIdx].weight = acs_ht80_channels[i].weight; |
| 1485 | } |
| 1486 | |
| 1487 | pSpectInfo = pSpectInfoParams->pSpectCh; |
| 1488 | for (j = 0; j < pSpectInfoParams->numSpectChans; j++) { |
| 1489 | if (CHANNEL_165 == pSpectInfo[j].chNum) { |
| 1490 | pSpectInfo[j].weight = SAP_ACS_WEIGHT_MAX * 4; |
| 1491 | break; |
| 1492 | } |
| 1493 | } |
| 1494 | |
| 1495 | pSpectInfo = pSpectInfoParams->pSpectCh; |
| 1496 | for (j = 0; j < (pSpectInfoParams->numSpectChans); j++) { |
| 1497 | CDF_TRACE(CDF_MODULE_ID_SAP, CDF_TRACE_LEVEL_INFO_HIGH, |
| 1498 | FL("Channel=%d Weight= %d rssi=%d bssCount=%d"), |
| 1499 | pSpectInfo->chNum, pSpectInfo->weight, |
| 1500 | pSpectInfo->rssiAgr, pSpectInfo->bssCount); |
| 1501 | pSpectInfo++; |
| 1502 | } |
| 1503 | } |
| 1504 | |
| 1505 | /** |
Kiran Kumar Lokere | b3d8b5b | 2015-10-06 19:33:42 -0700 | [diff] [blame] | 1506 | * sap_sort_chl_weight_vht160() - to sort the channels with the least weight |
| 1507 | * @pSpectInfoParams: Pointer to the tSapChSelSpectInfo structure |
| 1508 | * |
| 1509 | * Funtion to sort the channels with the least weight first for VHT160 channels |
| 1510 | * |
| 1511 | * Return: none |
| 1512 | */ |
| 1513 | void sap_sort_chl_weight_vht160(tSapChSelSpectInfo *pSpectInfoParams) |
| 1514 | { |
| 1515 | uint8_t i, j, n, idx; |
| 1516 | tSapSpectChInfo *pSpectInfo; |
| 1517 | uint8_t minIdx; |
| 1518 | |
| 1519 | pSpectInfo = pSpectInfoParams->pSpectCh; |
| 1520 | /* for each VHT160 channel, calculate the combined weight of the |
| 1521 | 8 20MHz weight */ |
| 1522 | for (i = 0; i < ARRAY_SIZE(acs_vht160_channels); i++) { |
| 1523 | for (j = 0; j < pSpectInfoParams->numSpectChans; j++) { |
| 1524 | if (pSpectInfo[j].chNum == |
| 1525 | acs_vht160_channels[i].chStartNum) |
| 1526 | break; |
| 1527 | } |
| 1528 | if (j == pSpectInfoParams->numSpectChans) |
| 1529 | continue; |
| 1530 | |
| 1531 | if (!(((pSpectInfo[j].chNum + 4) == pSpectInfo[j + 1].chNum) && |
| 1532 | ((pSpectInfo[j].chNum + 8) == |
| 1533 | pSpectInfo[j + 2].chNum) && |
| 1534 | ((pSpectInfo[j].chNum + 12) == |
| 1535 | pSpectInfo[j + 3].chNum) && |
| 1536 | ((pSpectInfo[j].chNum + 16) == |
| 1537 | pSpectInfo[j + 4].chNum) && |
| 1538 | ((pSpectInfo[j].chNum + 20) == |
| 1539 | pSpectInfo[j + 5].chNum) && |
| 1540 | ((pSpectInfo[j].chNum + 24) == |
| 1541 | pSpectInfo[j + 6].chNum) && |
| 1542 | ((pSpectInfo[j].chNum + 28) == |
| 1543 | pSpectInfo[j + 7].chNum))) { |
| 1544 | /* |
| 1545 | * some channels does not exist in pSectInfo array, |
| 1546 | * skip this channel and those in the same VHT160 width |
| 1547 | */ |
| 1548 | pSpectInfo[j].weight = SAP_ACS_WEIGHT_MAX * 8; |
| 1549 | if ((pSpectInfo[j].chNum + 4) == |
| 1550 | pSpectInfo[j + 1].chNum) |
| 1551 | pSpectInfo[j + 1].weight = |
| 1552 | SAP_ACS_WEIGHT_MAX * 8; |
| 1553 | if ((pSpectInfo[j].chNum + 8) == |
| 1554 | pSpectInfo[j + 2].chNum) |
| 1555 | pSpectInfo[j + 2].weight = |
| 1556 | SAP_ACS_WEIGHT_MAX * 8; |
| 1557 | if ((pSpectInfo[j].chNum + 12) == |
| 1558 | pSpectInfo[j + 3].chNum) |
| 1559 | pSpectInfo[j + 3].weight = |
| 1560 | SAP_ACS_WEIGHT_MAX * 8; |
| 1561 | if ((pSpectInfo[j].chNum + 16) == |
| 1562 | pSpectInfo[j + 4].chNum) |
| 1563 | pSpectInfo[j + 4].weight = |
| 1564 | SAP_ACS_WEIGHT_MAX * 8; |
| 1565 | if ((pSpectInfo[j].chNum + 20) == |
| 1566 | pSpectInfo[j + 5].chNum) |
| 1567 | pSpectInfo[j + 5].weight = |
| 1568 | SAP_ACS_WEIGHT_MAX * 8; |
| 1569 | if ((pSpectInfo[j].chNum + 24) == |
| 1570 | pSpectInfo[j + 6].chNum) |
| 1571 | pSpectInfo[j + 6].weight = |
| 1572 | SAP_ACS_WEIGHT_MAX * 8; |
| 1573 | if ((pSpectInfo[j].chNum + 28) == |
| 1574 | pSpectInfo[j + 7].chNum) |
| 1575 | pSpectInfo[j + 7].weight = |
| 1576 | SAP_ACS_WEIGHT_MAX * 8; |
| 1577 | continue; |
| 1578 | } |
| 1579 | /*found the channel, add the 7 adjacent channels' weight */ |
| 1580 | acs_vht160_channels[i].weight = pSpectInfo[j].weight + |
| 1581 | pSpectInfo[j + 1].weight + pSpectInfo[j + 2].weight + |
| 1582 | pSpectInfo[j + 3].weight + pSpectInfo[j + 4].weight + |
| 1583 | pSpectInfo[j + 5].weight + pSpectInfo[j + 6].weight + |
| 1584 | pSpectInfo[j + 7].weight; |
| 1585 | |
| 1586 | /* find best channel among 8 channels as the primary channel */ |
| 1587 | if ((pSpectInfo[j].weight + pSpectInfo[j + 1].weight + |
| 1588 | pSpectInfo[j + 2].weight + pSpectInfo[j + 3].weight) > |
| 1589 | (pSpectInfo[j + 4].weight + pSpectInfo[j + 5].weight + |
| 1590 | pSpectInfo[j + 6].weight + pSpectInfo[j + 7].weight)) |
| 1591 | idx = 4; |
| 1592 | else |
| 1593 | idx = 0; |
| 1594 | /* find best channel among 4 channels as the primary channel */ |
| 1595 | if ((pSpectInfo[j + idx].weight + |
| 1596 | pSpectInfo[j + idx + 1].weight) < |
| 1597 | (pSpectInfo[j + idx + 2].weight + |
| 1598 | pSpectInfo[j + idx + 3].weight)) { |
| 1599 | /* lower 2 channels are better choice */ |
| 1600 | if (pSpectInfo[j + idx].weight < |
| 1601 | pSpectInfo[j + idx + 1].weight) |
| 1602 | minIdx = 0 + idx; |
| 1603 | else |
| 1604 | minIdx = 1 + idx; |
| 1605 | } else if (pSpectInfo[j + idx + 2].weight <= |
| 1606 | pSpectInfo[j + idx + 3].weight) { |
| 1607 | /* upper 2 channels are better choice */ |
| 1608 | minIdx = 2 + idx; |
| 1609 | } else { |
| 1610 | minIdx = 3 + idx; |
| 1611 | } |
| 1612 | |
| 1613 | /* |
| 1614 | * set all 8 channels to max value first, then reset the |
| 1615 | * best channel as the selected primary channel, update its |
| 1616 | * weightage with the combined weight value |
| 1617 | */ |
| 1618 | for (n = 0; n < 8; n++) |
| 1619 | pSpectInfo[j + n].weight = SAP_ACS_WEIGHT_MAX * 8; |
| 1620 | |
| 1621 | pSpectInfo[j + minIdx].weight = acs_vht160_channels[i].weight; |
| 1622 | } |
| 1623 | |
| 1624 | pSpectInfo = pSpectInfoParams->pSpectCh; |
| 1625 | for (j = 0; j < pSpectInfoParams->numSpectChans; j++) { |
| 1626 | if (CHANNEL_165 == pSpectInfo[j].chNum) { |
| 1627 | pSpectInfo[j].weight = SAP_ACS_WEIGHT_MAX * 8; |
| 1628 | break; |
| 1629 | } |
| 1630 | } |
| 1631 | |
| 1632 | pSpectInfo = pSpectInfoParams->pSpectCh; |
| 1633 | for (j = 0; j < (pSpectInfoParams->numSpectChans); j++) { |
| 1634 | CDF_TRACE(CDF_MODULE_ID_SAP, CDF_TRACE_LEVEL_INFO_HIGH, |
| 1635 | FL("Channel=%d Weight= %d rssi=%d bssCount=%d"), |
| 1636 | pSpectInfo->chNum, pSpectInfo->weight, |
| 1637 | pSpectInfo->rssiAgr, pSpectInfo->bssCount); |
| 1638 | pSpectInfo++; |
| 1639 | } |
| 1640 | } |
| 1641 | |
| 1642 | /** |
Prakash Dhavali | 7090c5f | 2015-11-02 17:55:19 -0800 | [diff] [blame] | 1643 | * sap_sort_chl_weight_ht40_24_g() - to sort channel with the least weight |
| 1644 | * @pSpectInfoParams: Pointer to the tSapChSelSpectInfo structure |
| 1645 | * |
| 1646 | * Funtion to sort the channels with the least weight first for HT40 channels |
| 1647 | * |
| 1648 | * Return: none |
| 1649 | */ |
| 1650 | void sap_sort_chl_weight_ht40_24_g(tSapChSelSpectInfo *pSpectInfoParams) |
| 1651 | { |
| 1652 | uint8_t i, j; |
| 1653 | tSapSpectChInfo *pSpectInfo; |
| 1654 | uint32_t tmpWeight1, tmpWeight2; |
| 1655 | |
| 1656 | pSpectInfo = pSpectInfoParams->pSpectCh; |
| 1657 | /* |
| 1658 | * for each HT40 channel, calculate the combined weight of the |
| 1659 | * two 20MHz weight |
| 1660 | */ |
| 1661 | for (i = 0; i < ARRAY_SIZE(acs_ht40_channels24_g); i++) { |
| 1662 | for (j = 0; j < pSpectInfoParams->numSpectChans; j++) { |
| 1663 | if (pSpectInfo[j].chNum == |
| 1664 | acs_ht40_channels24_g[i].chStartNum) |
| 1665 | break; |
| 1666 | } |
| 1667 | if (j == pSpectInfoParams->numSpectChans) |
| 1668 | continue; |
| 1669 | |
| 1670 | if (!((pSpectInfo[j].chNum + 4) == pSpectInfo[j + 4].chNum)) { |
| 1671 | pSpectInfo[j].weight = SAP_ACS_WEIGHT_MAX * 2; |
| 1672 | continue; |
| 1673 | } |
| 1674 | /* |
| 1675 | * check if there is another channel combination possiblity |
| 1676 | * e.g., {1, 5} & {5, 9} |
| 1677 | */ |
| 1678 | if ((pSpectInfo[j + 4].chNum + 4) == pSpectInfo[j + 8].chNum) { |
| 1679 | /* need to compare two channel pairs */ |
| 1680 | tmpWeight1 = pSpectInfo[j].weight + |
| 1681 | pSpectInfo[j + 4].weight; |
| 1682 | tmpWeight2 = pSpectInfo[j + 4].weight + |
| 1683 | pSpectInfo[j + 8].weight; |
| 1684 | if (tmpWeight1 <= tmpWeight2) { |
| 1685 | if (pSpectInfo[j].weight <= |
| 1686 | pSpectInfo[j + 4].weight) { |
| 1687 | pSpectInfo[j].weight = |
| 1688 | tmpWeight1; |
| 1689 | pSpectInfo[j + 4].weight = |
| 1690 | SAP_ACS_WEIGHT_MAX * 2; |
| 1691 | pSpectInfo[j + 8].weight = |
| 1692 | SAP_ACS_WEIGHT_MAX * 2; |
| 1693 | } else { |
| 1694 | pSpectInfo[j + 4].weight = |
| 1695 | tmpWeight1; |
| 1696 | /* for secondary channel selection */ |
| 1697 | pSpectInfo[j].weight = |
| 1698 | SAP_ACS_WEIGHT_MAX * 2 |
| 1699 | - 1; |
| 1700 | pSpectInfo[j + 8].weight = |
| 1701 | SAP_ACS_WEIGHT_MAX * 2; |
| 1702 | } |
| 1703 | } else { |
| 1704 | if (pSpectInfo[j + 4].weight <= |
| 1705 | pSpectInfo[j + 8].weight) { |
| 1706 | pSpectInfo[j + 4].weight = |
| 1707 | tmpWeight2; |
| 1708 | pSpectInfo[j].weight = |
| 1709 | SAP_ACS_WEIGHT_MAX * 2; |
| 1710 | /* for secondary channel selection */ |
| 1711 | pSpectInfo[j + 8].weight = |
| 1712 | SAP_ACS_WEIGHT_MAX * 2 |
| 1713 | - 1; |
| 1714 | } else { |
| 1715 | pSpectInfo[j + 8].weight = |
| 1716 | tmpWeight2; |
| 1717 | pSpectInfo[j].weight = |
| 1718 | SAP_ACS_WEIGHT_MAX * 2; |
| 1719 | pSpectInfo[j + 4].weight = |
| 1720 | SAP_ACS_WEIGHT_MAX * 2; |
| 1721 | } |
| 1722 | } |
| 1723 | } else { |
| 1724 | tmpWeight1 = pSpectInfo[j].weight + |
| 1725 | pSpectInfo[j + 4].weight; |
| 1726 | if (pSpectInfo[j].weight <= |
| 1727 | pSpectInfo[j + 4].weight) { |
| 1728 | pSpectInfo[j].weight = tmpWeight1; |
| 1729 | pSpectInfo[j + 4].weight = |
| 1730 | SAP_ACS_WEIGHT_MAX * 2; |
| 1731 | } else { |
| 1732 | pSpectInfo[j + 4].weight = tmpWeight1; |
| 1733 | pSpectInfo[j].weight = |
| 1734 | SAP_ACS_WEIGHT_MAX * 2; |
| 1735 | } |
| 1736 | } |
| 1737 | } |
| 1738 | } |
| 1739 | |
| 1740 | /*========================================================================== |
| 1741 | FUNCTION sap_sort_chl_weight_ht40_5_g |
| 1742 | |
| 1743 | DESCRIPTION |
| 1744 | Funtion to sort the channels with the least weight first for HT40 channels |
| 1745 | |
| 1746 | DEPENDENCIES |
| 1747 | NA. |
| 1748 | |
| 1749 | PARAMETERS |
| 1750 | |
| 1751 | IN |
| 1752 | pSpectInfoParams : Pointer to the tSapChSelSpectInfo structure |
| 1753 | |
| 1754 | RETURN VALUE |
| 1755 | void : NULL |
| 1756 | |
| 1757 | SIDE EFFECTS |
| 1758 | ============================================================================*/ |
| 1759 | void sap_sort_chl_weight_ht40_5_g(tSapChSelSpectInfo *pSpectInfoParams) |
| 1760 | { |
| 1761 | uint8_t i, j; |
| 1762 | tSapSpectChInfo *pSpectInfo; |
| 1763 | |
| 1764 | pSpectInfo = pSpectInfoParams->pSpectCh; |
| 1765 | /*for each HT40 channel, calculate the combined weight of the |
| 1766 | two 20MHz weight */ |
| 1767 | for (i = 0; i < ARRAY_SIZE(acs_ht40_channels5_g); i++) { |
| 1768 | for (j = 0; j < pSpectInfoParams->numSpectChans; j++) { |
| 1769 | if (pSpectInfo[j].chNum == |
| 1770 | acs_ht40_channels5_g[i].chStartNum) |
| 1771 | break; |
| 1772 | } |
| 1773 | if (j == pSpectInfoParams->numSpectChans) |
| 1774 | continue; |
| 1775 | |
| 1776 | /* found the channel, add the two adjacent channels' weight */ |
| 1777 | if ((pSpectInfo[j].chNum + 4) == pSpectInfo[j + 1].chNum) { |
| 1778 | acs_ht40_channels5_g[i].weight = pSpectInfo[j].weight + |
| 1779 | pSpectInfo[j + 1].weight; |
| 1780 | /* select better of the adjact channel as the primary channel */ |
| 1781 | if (pSpectInfo[j].weight <= pSpectInfo[j + 1].weight) { |
| 1782 | pSpectInfo[j].weight = |
| 1783 | acs_ht40_channels5_g[i].weight; |
| 1784 | /* mark the adjacent channel's weight as max value so |
| 1785 | that it will be sorted to the bottom */ |
| 1786 | pSpectInfo[j + 1].weight = |
| 1787 | SAP_ACS_WEIGHT_MAX * 2; |
| 1788 | } else { |
| 1789 | pSpectInfo[j + 1].weight = |
| 1790 | acs_ht40_channels5_g[i].weight; |
| 1791 | /* mark the adjacent channel's weight as max value so |
| 1792 | that it will be sorted to the bottom */ |
| 1793 | pSpectInfo[j].weight = SAP_ACS_WEIGHT_MAX * 2; |
| 1794 | } |
| 1795 | |
| 1796 | } else |
| 1797 | pSpectInfo[j].weight = SAP_ACS_WEIGHT_MAX * 2; |
| 1798 | } |
| 1799 | |
| 1800 | /* avoid channel 165 by setting its weight to max */ |
| 1801 | pSpectInfo = pSpectInfoParams->pSpectCh; |
| 1802 | for (j = 0; j < pSpectInfoParams->numSpectChans; j++) { |
| 1803 | if (CHANNEL_165 == pSpectInfo[j].chNum) { |
| 1804 | pSpectInfo[j].weight = SAP_ACS_WEIGHT_MAX * 2; |
| 1805 | break; |
| 1806 | } |
| 1807 | } |
| 1808 | |
| 1809 | pSpectInfo = pSpectInfoParams->pSpectCh; |
| 1810 | for (j = 0; j < (pSpectInfoParams->numSpectChans); j++) { |
| 1811 | CDF_TRACE(CDF_MODULE_ID_SAP, CDF_TRACE_LEVEL_INFO_HIGH, |
| 1812 | "In %s, Channel=%d Weight= %d rssi=%d bssCount=%d", |
| 1813 | __func__, pSpectInfo->chNum, pSpectInfo->weight, |
| 1814 | pSpectInfo->rssiAgr, pSpectInfo->bssCount); |
| 1815 | pSpectInfo++; |
| 1816 | } |
| 1817 | |
| 1818 | sap_sort_chl_weight(pSpectInfoParams); |
| 1819 | } |
| 1820 | |
| 1821 | /*========================================================================== |
| 1822 | FUNCTION sap_sort_chl_weight_all |
| 1823 | |
| 1824 | DESCRIPTION |
| 1825 | Funtion to sort the channels with the least weight first |
| 1826 | |
| 1827 | DEPENDENCIES |
| 1828 | NA. |
| 1829 | |
| 1830 | PARAMETERS |
| 1831 | |
| 1832 | IN |
| 1833 | ptSapContext : Pointer to the ptSapContext structure |
| 1834 | pSpectInfoParams : Pointer to the tSapChSelSpectInfo structure |
| 1835 | |
| 1836 | RETURN VALUE |
| 1837 | void : NULL |
| 1838 | |
| 1839 | SIDE EFFECTS |
| 1840 | ============================================================================*/ |
| 1841 | void sap_sort_chl_weight_all(ptSapContext pSapCtx, |
| 1842 | tSapChSelSpectInfo *pSpectInfoParams, |
| 1843 | uint32_t operatingBand) |
| 1844 | { |
| 1845 | tSapSpectChInfo *pSpectCh = NULL; |
| 1846 | uint32_t j = 0; |
| 1847 | #ifndef SOFTAP_CHANNEL_RANGE |
| 1848 | uint32_t i = 0; |
| 1849 | #endif |
| 1850 | |
| 1851 | pSpectCh = pSpectInfoParams->pSpectCh; |
| 1852 | #ifdef SOFTAP_CHANNEL_RANGE |
| 1853 | |
| 1854 | switch (pSapCtx->acs_cfg->ch_width) { |
| 1855 | case CH_WIDTH_40MHZ: |
| 1856 | if (eCSR_DOT11_MODE_11g == operatingBand) |
| 1857 | sap_sort_chl_weight_ht40_24_g(pSpectInfoParams); |
| 1858 | else if (eCSR_DOT11_MODE_11a == operatingBand) |
| 1859 | sap_sort_chl_weight_ht40_5_g(pSpectInfoParams); |
| 1860 | else { |
| 1861 | sap_sort_chl_weight_ht40_24_g(pSpectInfoParams); |
| 1862 | sap_sort_chl_weight_ht40_5_g(pSpectInfoParams); |
| 1863 | } |
| 1864 | sap_sort_chl_weight(pSpectInfoParams); |
| 1865 | break; |
| 1866 | |
| 1867 | case CH_WIDTH_80MHZ: |
Kiran Kumar Lokere | b3d8b5b | 2015-10-06 19:33:42 -0700 | [diff] [blame] | 1868 | case CH_WIDTH_80P80MHZ: |
Prakash Dhavali | 7090c5f | 2015-11-02 17:55:19 -0800 | [diff] [blame] | 1869 | sap_sort_chl_weight_ht80(pSpectInfoParams); |
| 1870 | break; |
| 1871 | |
Kiran Kumar Lokere | b3d8b5b | 2015-10-06 19:33:42 -0700 | [diff] [blame] | 1872 | case CH_WIDTH_160MHZ: |
| 1873 | sap_sort_chl_weight_vht160(pSpectInfoParams); |
| 1874 | break; |
Prakash Dhavali | 7090c5f | 2015-11-02 17:55:19 -0800 | [diff] [blame] | 1875 | case CH_WIDTH_20MHZ: |
| 1876 | default: |
| 1877 | /* Sorting the channels as per weights as 20MHz channels */ |
| 1878 | sap_sort_chl_weight(pSpectInfoParams); |
| 1879 | } |
| 1880 | |
| 1881 | #else |
| 1882 | /* Sorting the channels as per weights */ |
| 1883 | for (i = 0; i < SPECT_24GHZ_CH_COUNT; i++) { |
| 1884 | minWeightIndex = i; |
| 1885 | for (j = i + 1; j < SPECT_24GHZ_CH_COUNT; j++) { |
| 1886 | if (pSpectCh[j].weight < |
| 1887 | pSpectCh[minWeightIndex].weight) { |
| 1888 | minWeightIndex = j; |
| 1889 | } |
| 1890 | } |
| 1891 | if (minWeightIndex != i) { |
| 1892 | cdf_mem_copy(&temp, &pSpectCh[minWeightIndex], |
| 1893 | sizeof(*pSpectCh)); |
| 1894 | cdf_mem_copy(&pSpectCh[minWeightIndex], &pSpectCh[i], |
| 1895 | sizeof(*pSpectCh)); |
| 1896 | cdf_mem_copy(&pSpectCh[i], &temp, sizeof(*pSpectCh)); |
| 1897 | } |
| 1898 | } |
| 1899 | #endif |
| 1900 | |
| 1901 | /* For testing */ |
| 1902 | CDF_TRACE(CDF_MODULE_ID_SAP, CDF_TRACE_LEVEL_INFO_HIGH, |
| 1903 | "In %s, Sorted Spectrum Channels Weight", __func__); |
| 1904 | pSpectCh = pSpectInfoParams->pSpectCh; |
| 1905 | for (j = 0; j < (pSpectInfoParams->numSpectChans); j++) { |
| 1906 | CDF_TRACE(CDF_MODULE_ID_SAP, CDF_TRACE_LEVEL_INFO_HIGH, |
| 1907 | "In %s, Channel=%d Weight= %d rssi=%d bssCount=%d", |
| 1908 | __func__, pSpectCh->chNum, pSpectCh->weight, |
| 1909 | pSpectCh->rssiAgr, pSpectCh->bssCount); |
| 1910 | pSpectCh++; |
| 1911 | } |
| 1912 | |
| 1913 | } |
| 1914 | |
| 1915 | /*========================================================================== |
| 1916 | FUNCTION sap_filter_over_lap_ch |
| 1917 | |
| 1918 | DESCRIPTION |
| 1919 | return true if ch is acceptable. |
| 1920 | This function will decide if we will filter over lap channel or not. |
| 1921 | |
| 1922 | DEPENDENCIES |
| 1923 | shall called after ap start. |
| 1924 | |
| 1925 | PARAMETERS |
| 1926 | |
| 1927 | IN |
| 1928 | pSapCtx : Pointer to ptSapContext. |
| 1929 | chNum : Filter channel number. |
| 1930 | |
| 1931 | RETURN VALUE |
| 1932 | bool : true if channel is accepted. |
| 1933 | |
| 1934 | SIDE EFFECTS |
| 1935 | ============================================================================*/ |
| 1936 | bool sap_filter_over_lap_ch(ptSapContext pSapCtx, uint16_t chNum) |
| 1937 | { |
| 1938 | if (pSapCtx->enableOverLapCh) |
| 1939 | return eSAP_TRUE; |
| 1940 | else if ((chNum == CHANNEL_1) || |
| 1941 | (chNum == CHANNEL_6) || (chNum == CHANNEL_11)) |
| 1942 | return eSAP_TRUE; |
| 1943 | |
| 1944 | return eSAP_FALSE; |
| 1945 | } |
| 1946 | |
| 1947 | /*========================================================================== |
| 1948 | FUNCTION sap_select_channel |
| 1949 | |
| 1950 | DESCRIPTION |
| 1951 | Runs a algorithm to select the best channel to operate in based on BSS |
| 1952 | rssi and bss count on each channel |
| 1953 | |
| 1954 | DEPENDENCIES |
| 1955 | NA. |
| 1956 | |
| 1957 | PARAMETERS |
| 1958 | |
| 1959 | IN |
| 1960 | halHandle : Pointer to HAL handle |
| 1961 | pResult : Pointer to tScanResultHandle |
| 1962 | |
| 1963 | RETURN VALUE |
| 1964 | uint8_t : Success - channel number, Fail - zero |
| 1965 | |
| 1966 | SIDE EFFECTS |
| 1967 | ============================================================================*/ |
| 1968 | uint8_t sap_select_channel(tHalHandle halHandle, ptSapContext pSapCtx, |
| 1969 | tScanResultHandle pScanResult) |
| 1970 | { |
| 1971 | /* DFS param object holding all the data req by the algo */ |
| 1972 | tSapChSelSpectInfo oSpectInfoParams = { NULL, 0 }; |
| 1973 | tSapChSelSpectInfo *pSpectInfoParams = &oSpectInfoParams; /* Memory? NB */ |
| 1974 | uint8_t bestChNum = SAP_CHANNEL_NOT_SELECTED; |
| 1975 | #ifdef FEATURE_WLAN_CH_AVOID |
| 1976 | uint8_t i; |
| 1977 | uint8_t firstSafeChannelInRange = SAP_CHANNEL_NOT_SELECTED; |
| 1978 | #endif |
| 1979 | #ifdef SOFTAP_CHANNEL_RANGE |
| 1980 | uint32_t startChannelNum; |
| 1981 | uint32_t endChannelNum; |
| 1982 | uint32_t operatingBand = 0; |
| 1983 | uint32_t tmpChNum; |
| 1984 | uint8_t count; |
| 1985 | #endif |
| 1986 | CDF_TRACE(CDF_MODULE_ID_SAP, CDF_TRACE_LEVEL_INFO_HIGH, |
| 1987 | "In %s, Running SAP Ch Select", __func__); |
| 1988 | |
| 1989 | #ifdef FEATURE_WLAN_CH_AVOID |
| 1990 | sap_update_unsafe_channel_list(pSapCtx); |
| 1991 | #endif |
| 1992 | |
| 1993 | if (NULL == pScanResult) { |
| 1994 | CDF_TRACE(CDF_MODULE_ID_SAP, CDF_TRACE_LEVEL_INFO_HIGH, |
| 1995 | "%s: No external AP present\n", __func__); |
| 1996 | |
| 1997 | #ifndef SOFTAP_CHANNEL_RANGE |
| 1998 | return bestChNum; |
| 1999 | #else |
| 2000 | startChannelNum = pSapCtx->acs_cfg->start_ch; |
| 2001 | endChannelNum = pSapCtx->acs_cfg->end_ch; |
| 2002 | |
| 2003 | |
| 2004 | CDF_TRACE(CDF_MODULE_ID_SAP, CDF_TRACE_LEVEL_INFO_HIGH, |
| 2005 | "%s: start - end: %d - %d\n", __func__, |
| 2006 | startChannelNum, endChannelNum); |
| 2007 | |
| 2008 | #ifndef FEATURE_WLAN_CH_AVOID /* FEATURE_WLAN_CH_AVOID NOT defined case */ |
| 2009 | pSapCtx->acs_cfg->pri_ch = startChannelNum; |
| 2010 | pSapCtx->acs_cfg->ht_sec_ch = 0; |
| 2011 | /* pick the first channel in configured range */ |
| 2012 | return startChannelNum; |
| 2013 | #else /* FEATURE_WLAN_CH_AVOID defined */ |
| 2014 | |
| 2015 | /* get a channel in PCL and within the range */ |
| 2016 | for (i = 0; i < pSapCtx->acs_cfg->pcl_ch_count; i++) { |
| 2017 | if ((pSapCtx->acs_cfg->pcl_channels[i] >= |
| 2018 | startChannelNum) |
| 2019 | && (pSapCtx->acs_cfg->pcl_channels[i] <= |
| 2020 | endChannelNum)) { |
| 2021 | firstSafeChannelInRange = |
| 2022 | pSapCtx->acs_cfg->pcl_channels[i]; |
| 2023 | break; |
| 2024 | } |
| 2025 | } |
| 2026 | if (SAP_CHANNEL_NOT_SELECTED != firstSafeChannelInRange) |
| 2027 | return firstSafeChannelInRange; |
| 2028 | |
| 2029 | for (i = 0; i < NUM_20MHZ_RF_CHANNELS; i++) { |
| 2030 | if ((safe_channels[i].channelNumber >= startChannelNum) |
| 2031 | && (safe_channels[i].channelNumber <= |
| 2032 | endChannelNum)) { |
| 2033 | CHANNEL_STATE channel_type = |
| 2034 | cds_get_channel_state(safe_channels[i]. |
| 2035 | channelNumber); |
| 2036 | |
| 2037 | if ((channel_type == CHANNEL_STATE_DISABLE) || |
| 2038 | (channel_type == CHANNEL_STATE_INVALID)) |
| 2039 | continue; |
| 2040 | |
| 2041 | if (safe_channels[i].isSafe == true) { |
| 2042 | CDF_TRACE(CDF_MODULE_ID_SAP, |
| 2043 | CDF_TRACE_LEVEL_INFO_HIGH, |
| 2044 | "%s: channel %d in the configuration is safe\n", |
| 2045 | __func__, |
| 2046 | safe_channels[i]. |
| 2047 | channelNumber); |
| 2048 | firstSafeChannelInRange = |
| 2049 | safe_channels[i].channelNumber; |
| 2050 | break; |
| 2051 | } |
| 2052 | |
| 2053 | CDF_TRACE(CDF_MODULE_ID_SAP, |
| 2054 | CDF_TRACE_LEVEL_INFO_HIGH, |
| 2055 | "%s: channel %d in the configuration is unsafe\n", |
| 2056 | __func__, |
| 2057 | safe_channels[i].channelNumber); |
| 2058 | } |
| 2059 | } |
| 2060 | |
| 2061 | /* if no channel selected return SAP_CHANNEL_NOT_SELECTED */ |
| 2062 | return firstSafeChannelInRange; |
| 2063 | #endif /* !FEATURE_WLAN_CH_AVOID */ |
| 2064 | #endif /* SOFTAP_CHANNEL_RANGE */ |
| 2065 | } |
| 2066 | |
| 2067 | /* Initialize the structure pointed by pSpectInfoParams */ |
| 2068 | if (sap_chan_sel_init(halHandle, pSpectInfoParams, pSapCtx) != eSAP_TRUE) { |
| 2069 | CDF_TRACE(CDF_MODULE_ID_SAP, CDF_TRACE_LEVEL_ERROR, |
| 2070 | "In %s, Ch Select initialization failed", __func__); |
| 2071 | return SAP_CHANNEL_NOT_SELECTED; |
| 2072 | } |
| 2073 | /* Compute the weight of the entire spectrum in the operating band */ |
| 2074 | sap_compute_spect_weight(pSpectInfoParams, halHandle, pScanResult, |
| 2075 | pSapCtx); |
| 2076 | |
| 2077 | #ifdef FEATURE_AP_MCC_CH_AVOIDANCE |
| 2078 | /* process avoid channel IE to collect all channels to avoid */ |
| 2079 | sap_process_avoid_ie(halHandle, pSapCtx, pScanResult, pSpectInfoParams); |
| 2080 | #endif /* FEATURE_AP_MCC_CH_AVOIDANCE */ |
| 2081 | |
| 2082 | #ifdef SOFTAP_CHANNEL_RANGE |
| 2083 | startChannelNum = pSapCtx->acs_cfg->start_ch; |
| 2084 | endChannelNum = pSapCtx->acs_cfg->end_ch; |
| 2085 | SET_ACS_BAND(operatingBand, pSapCtx); |
| 2086 | |
| 2087 | pSapCtx->acsBestChannelInfo.channelNum = 0; |
| 2088 | pSapCtx->acsBestChannelInfo.weight = SAP_ACS_WEIGHT_MAX; |
| 2089 | |
| 2090 | /* Sort the channel list as per the computed weights, lesser weight first. */ |
| 2091 | sap_sort_chl_weight_all(pSapCtx, pSpectInfoParams, operatingBand); |
| 2092 | |
| 2093 | /*Loop till get the best channel in the given range */ |
| 2094 | for (count = 0; count < pSpectInfoParams->numSpectChans; count++) { |
| 2095 | if ((startChannelNum <= pSpectInfoParams->pSpectCh[count].chNum) |
| 2096 | && (endChannelNum >= |
| 2097 | pSpectInfoParams->pSpectCh[count].chNum)) { |
| 2098 | if (bestChNum == SAP_CHANNEL_NOT_SELECTED) { |
| 2099 | bestChNum = |
| 2100 | pSpectInfoParams->pSpectCh[count].chNum; |
| 2101 | /* check if bestChNum is in preferred channel list */ |
| 2102 | bestChNum = |
| 2103 | sap_select_preferred_channel_from_channel_list |
| 2104 | (bestChNum, pSapCtx, pSpectInfoParams); |
| 2105 | if (bestChNum == SAP_CHANNEL_NOT_SELECTED) { |
| 2106 | /* not in preferred channel list, go to next best channel */ |
| 2107 | continue; |
| 2108 | } |
| 2109 | |
| 2110 | #ifdef FEATURE_AP_MCC_CH_AVOIDANCE |
| 2111 | /* Weight of the channels(device's AP is |
| 2112 | * operating) increased to MAX+1 so that they |
| 2113 | * will be choosen only when there is no other |
| 2114 | * best channel to choose |
| 2115 | */ |
| 2116 | if (sap_check_in_avoid_ch_list(pSapCtx, |
| 2117 | bestChNum)) { |
| 2118 | bestChNum = SAP_CHANNEL_NOT_SELECTED; |
| 2119 | continue; |
| 2120 | } |
| 2121 | #endif |
| 2122 | |
| 2123 | pSapCtx->acsBestChannelInfo.channelNum = |
| 2124 | bestChNum; |
| 2125 | pSapCtx->acsBestChannelInfo.weight = |
| 2126 | pSpectInfoParams-> |
| 2127 | pSpectCh[count]. |
| 2128 | weight_copy; |
| 2129 | } |
| 2130 | |
| 2131 | if (bestChNum != SAP_CHANNEL_NOT_SELECTED) { |
| 2132 | if (operatingBand == eCSR_DOT11_MODE_11g) { |
| 2133 | /* Give preference to Non-overlap channels */ |
| 2134 | if (sap_filter_over_lap_ch(pSapCtx, |
| 2135 | pSpectInfoParams-> |
| 2136 | pSpectCh[count]. |
| 2137 | chNum)) { |
| 2138 | tmpChNum = |
| 2139 | pSpectInfoParams-> |
| 2140 | pSpectCh[count].chNum; |
| 2141 | tmpChNum = |
| 2142 | sap_select_preferred_channel_from_channel_list |
| 2143 | (tmpChNum, pSapCtx, |
| 2144 | pSpectInfoParams); |
| 2145 | if (tmpChNum != |
| 2146 | SAP_CHANNEL_NOT_SELECTED) { |
| 2147 | bestChNum = tmpChNum; |
| 2148 | break; |
| 2149 | } |
| 2150 | } |
| 2151 | } |
| 2152 | } |
| 2153 | } |
| 2154 | } |
| 2155 | #else |
| 2156 | /* Sort the channel list as per the computed weights, lesser weight first. */ |
| 2157 | sap_sort_chl_weight_all(pSapCtx, halHandle, pSpectInfoParams); |
| 2158 | /* Get the first channel in sorted array as best 20M Channel */ |
| 2159 | bestChNum = (uint8_t) pSpectInfoParams->pSpectCh[0].chNum; |
| 2160 | /* Select Best Channel from Channel List if Configured */ |
| 2161 | bestChNum = sap_select_preferred_channel_from_channel_list(bestChNum, |
| 2162 | pSapCtx, |
| 2163 | pSpectInfoParams); |
| 2164 | #endif |
| 2165 | |
| 2166 | /** in case the best channel seleted is not in PCL and there is another |
| 2167 | * channel which has same weightage and is in PCL, choose the one in |
| 2168 | * PCL |
| 2169 | */ |
| 2170 | for (count = 0; count < pSpectInfoParams->numSpectChans; count++) { |
| 2171 | /** check if a pcl channel has the same weightage |
| 2172 | * as the best channel |
| 2173 | */ |
| 2174 | if (ch_in_pcl(pSapCtx, pSpectInfoParams->pSpectCh[count].chNum) |
| 2175 | && (pSpectInfoParams->pSpectCh[count].weight == |
| 2176 | pSapCtx->acsBestChannelInfo.weight)) { |
| 2177 | if (sap_select_preferred_channel_from_channel_list( |
| 2178 | pSpectInfoParams->pSpectCh[count].chNum, |
| 2179 | pSapCtx, pSpectInfoParams) == |
| 2180 | SAP_CHANNEL_NOT_SELECTED) |
| 2181 | continue; |
| 2182 | |
| 2183 | #ifdef FEATURE_AP_MCC_CH_AVOIDANCE |
| 2184 | if (sap_check_in_avoid_ch_list(pSapCtx, bestChNum)) |
| 2185 | continue; |
| 2186 | #endif |
| 2187 | bestChNum = pSpectInfoParams->pSpectCh[count].chNum; |
| 2188 | CDF_TRACE(CDF_MODULE_ID_SAP, |
| 2189 | CDF_TRACE_LEVEL_INFO_HIGH, |
| 2190 | "change best channel to %d in PCL", |
| 2191 | bestChNum); |
| 2192 | break; |
| 2193 | } |
| 2194 | } |
| 2195 | |
| 2196 | pSapCtx->acs_cfg->pri_ch = bestChNum; |
| 2197 | /* determine secondary channel for 2.4G channel 5, 6, 7 in HT40 */ |
| 2198 | if ((operatingBand == eCSR_DOT11_MODE_11g) && |
| 2199 | (pSapCtx->acs_cfg->ch_width == CH_WIDTH_40MHZ)) { |
| 2200 | if ((bestChNum >= 5) && (bestChNum <= 7)) { |
| 2201 | int weight_below, weight_above, i; |
| 2202 | tSapSpectChInfo *pspect_info; |
| 2203 | |
| 2204 | weight_below = weight_above = SAP_ACS_WEIGHT_MAX; |
| 2205 | pspect_info = pSpectInfoParams->pSpectCh; |
| 2206 | for (i = 0; i < pSpectInfoParams->numSpectChans; |
| 2207 | i++) { |
| 2208 | if (pspect_info[i].chNum == (bestChNum - 4)) |
| 2209 | weight_below = pspect_info[i].weight; |
| 2210 | |
| 2211 | if (pspect_info[i].chNum == (bestChNum + 4)) |
| 2212 | weight_above = pspect_info[i].weight; |
| 2213 | } |
| 2214 | |
| 2215 | if (weight_below < weight_above) |
| 2216 | pSapCtx->acs_cfg->ht_sec_ch = |
| 2217 | pSapCtx->acs_cfg->pri_ch - 4; |
| 2218 | else |
| 2219 | pSapCtx->acs_cfg->ht_sec_ch = |
| 2220 | pSapCtx->acs_cfg->pri_ch + 4; |
| 2221 | } else if (bestChNum >= 1 && bestChNum <= 4) { |
| 2222 | pSapCtx->acs_cfg->ht_sec_ch = |
| 2223 | pSapCtx->acs_cfg->pri_ch + 4; |
| 2224 | } else if (bestChNum >= 8 && bestChNum <= 13) { |
| 2225 | pSapCtx->acs_cfg->ht_sec_ch = |
| 2226 | pSapCtx->acs_cfg->pri_ch - 4; |
| 2227 | } else if (bestChNum == 14) { |
| 2228 | pSapCtx->acs_cfg->ht_sec_ch = 0; |
| 2229 | } |
| 2230 | pSapCtx->secondary_ch = pSapCtx->acs_cfg->ht_sec_ch; |
| 2231 | } |
| 2232 | /* Free all the allocated memory */ |
| 2233 | sap_chan_sel_exit(pSpectInfoParams); |
| 2234 | |
| 2235 | CDF_TRACE(CDF_MODULE_ID_SAP, CDF_TRACE_LEVEL_INFO_HIGH, |
| 2236 | "In %s, Running SAP Ch select Completed, Ch=%d", __func__, |
| 2237 | bestChNum); |
| 2238 | if (bestChNum > 0 && bestChNum <= 252) |
| 2239 | return bestChNum; |
| 2240 | else |
| 2241 | return SAP_CHANNEL_NOT_SELECTED; |
| 2242 | } |