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gerrit-public.fairphone.software / platform / vendor / qcom-opensource / wlan / prima / 8c8bb1e8d8da315d8e26f0f3d80f020bdb930ddf / . / CORE / SAP / src / sapChSelect.c
blob: 5ef9b819c12973a55912411cda979aafe18c6964 [file] [log] [blame]
Jeff Johnson295189b2012-06-20 16:38:30 -0700[diff] [blame]1/*
Gopichand Nakkala92f07d82013-01-08 21:16:34 -0800[diff] [blame]2 * Copyright (c) 2012-2013, 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/*
Jeff Johnson32d95a32012-09-10 13:15:23 -0700[diff] [blame]22 * Copyright (c) 2012, The Linux Foundation. All rights reserved.
Jeff Johnson295189b2012-06-20 16:38:30 -0700[diff] [blame]23 *
24 * Previously licensed under the ISC license by Qualcomm Atheros, Inc.
25 *
26 *
27 * Permission to use, copy, modify, and/or distribute this software for
28 * any purpose with or without fee is hereby granted, provided that the
29 * above copyright notice and this permission notice appear in all
30 * copies.
31 *
32 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
33 * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
34 * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
35 * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
36 * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
37 * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
38 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
39 * PERFORMANCE OF THIS SOFTWARE.
40 */
41
42/*===========================================================================
43
44 s a p C h S e l e c t . C
Jeff Johnson295189b2012-06-20 16:38:30 -0700[diff] [blame]45 OVERVIEW:
Madan Mohan Koyyalamudi8c8bb1e2013-08-26 23:13:07 +0530[diff] [blame^]46
Jeff Johnson295189b2012-06-20 16:38:30 -0700[diff] [blame]47 This software unit holds the implementation of the WLAN SAP modules
Madan Mohan Koyyalamudi8c8bb1e2013-08-26 23:13:07 +0530[diff] [blame^]48 functions for channel selection.
Jeff Johnson295189b2012-06-20 16:38:30 -0700[diff] [blame]49
Madan Mohan Koyyalamudi8c8bb1e2013-08-26 23:13:07 +0530[diff] [blame^]50 DEPENDENCIES:
Jeff Johnson295189b2012-06-20 16:38:30 -0700[diff] [blame]51
Madan Mohan Koyyalamudi8c8bb1e2013-08-26 23:13:07 +0530[diff] [blame^]52 Are listed for each API below.
Jeff Johnson295189b2012-06-20 16:38:30 -0700[diff] [blame]53===========================================================================*/
54
55/*===========================================================================
56
57 EDIT HISTORY FOR FILE
58
59
60 This section contains comments describing changes made to the module.
61 Notice that changes are listed in reverse chronological order.
62
63
64
65 when who what, where, why
66---------- --- --------------------------------------------------------
672010-03-15 SOFTAP Created module
68
69===========================================================================*/
70
71
72/*--------------------------------------------------------------------------
73 Include Files
74------------------------------------------------------------------------*/
75#include "vos_trace.h"
76#include "csrApi.h"
77#include "sme_Api.h"
78#include "sapChSelect.h"
79#include "sapInternal.h"
Mahesh Kumar Kalikot Veetil2aad8d82013-02-07 12:31:28 -0800[diff] [blame]80#ifdef ANI_OS_TYPE_QNX
81#include "stdio.h"
82#endif
Jeff Johnson295189b2012-06-20 16:38:30 -0700[diff] [blame]83
84/*--------------------------------------------------------------------------
85 Function definitions
86--------------------------------------------------------------------------*/
87
88/*--------------------------------------------------------------------------
89 Defines
90--------------------------------------------------------------------------*/
91#define SAP_DEBUG
92
Venkata Prathyusha Kuntupalli5c9e4e82013-04-15 13:10:09 -0700[diff] [blame]93#define IS_RSSI_VALID( extRssi, rssi ) \
94( \
95 ((extRssi < rssi)?eANI_BOOLEAN_TRUE:eANI_BOOLEAN_FALSE) \
96)
97
Madan Mohan Koyyalamudi5aef2af2012-10-05 11:56:27 -0700[diff] [blame]98/*==========================================================================
99 FUNCTION sapCleanupChannelList
100
101 DESCRIPTION
102 Function sapCleanupChannelList frees up the memory allocated to the channel list.
103
104 DEPENDENCIES
105 NA.
106
107 PARAMETERS
108
109 IN
110 NULL
111
112 RETURN VALUE
113 NULL
114============================================================================*/
115
116void sapCleanupChannelList(void)
Madan Mohan Koyyalamudi1bed5982012-10-22 14:38:06 -0700[diff] [blame]117{
Madan Mohan Koyyalamudi5aef2af2012-10-05 11:56:27 -0700[diff] [blame]118 v_PVOID_t pvosGCtx = vos_get_global_context(VOS_MODULE_ID_SAP, NULL);
Gopichand Nakkala936715f2013-03-18 19:48:10 +0530[diff] [blame]119 ptSapContext pSapCtx;
Madan Mohan Koyyalamudi5aef2af2012-10-05 11:56:27 -0700[diff] [blame]120
Madan Mohan Koyyalamudi1bed5982012-10-22 14:38:06 -0700[diff] [blame]121 VOS_TRACE( VOS_MODULE_ID_SAP, VOS_TRACE_LEVEL_INFO,
122 "Cleaning up the channel list structure");
123
Gopichand Nakkala936715f2013-03-18 19:48:10 +0530[diff] [blame]124 if (NULL == pvosGCtx)
125 {
126 VOS_TRACE( VOS_MODULE_ID_SAP, VOS_TRACE_LEVEL_FATAL,
127 "SAP Global Context is NULL");
128 return ;
129 }
130
131 pSapCtx = VOS_GET_SAP_CB(pvosGCtx);
132 if (NULL == pSapCtx)
133 {
134 VOS_TRACE( VOS_MODULE_ID_SAP, VOS_TRACE_LEVEL_FATAL,
135 "SAP Context is NULL");
136 return ;
137 }
138
139 pSapCtx->SapChnlList.numChannel = 0;
Madan Mohan Koyyalamudi1bed5982012-10-22 14:38:06 -0700[diff] [blame]140 vos_mem_free(pSapCtx->SapChnlList.channelList);
141 pSapCtx->SapChnlList.channelList = NULL;
Madan Mohan Koyyalamudi5aef2af2012-10-05 11:56:27 -0700[diff] [blame]142}
143
144/*==========================================================================
145 FUNCTION sapSetPreferredChannel
146
147 DESCRIPTION
148 Function sapSetPreferredChannel sets the channel list which has been configured
149 into sap context (pSapCtx) which will be used at the time of best channel selection.
150
151 DEPENDENCIES
152 NA.
153
154 PARAMETERS
155
156 IN
157 *ptr: pointer having the command followed by the arguments in string format
Madan Mohan Koyyalamudi5aef2af2012-10-05 11:56:27 -0700[diff] [blame]158
159 RETURN VALUE
160 int: return 0 when success else returns error code.
161============================================================================*/
162
Mahesh Kumar Kalikot Veetil2aad8d82013-02-07 12:31:28 -0800[diff] [blame]163int sapSetPreferredChannel(tANI_U8* ptr)
Madan Mohan Koyyalamudi5aef2af2012-10-05 11:56:27 -0700[diff] [blame]164{
Madan Mohan Koyyalamudi5aef2af2012-10-05 11:56:27 -0700[diff] [blame]165
Madan Mohan Koyyalamudi1bed5982012-10-22 14:38:06 -0700[diff] [blame]166 v_PVOID_t pvosGCtx = vos_get_global_context(VOS_MODULE_ID_SAP, NULL);
Gopichand Nakkala936715f2013-03-18 19:48:10 +0530[diff] [blame]167 ptSapContext pSapCtx;
Madan Mohan Koyyalamudi1bed5982012-10-22 14:38:06 -0700[diff] [blame]168 tANI_U8* param;
169 int tempInt;
170 int j;
Madan Mohan Koyyalamudi5aef2af2012-10-05 11:56:27 -0700[diff] [blame]171
Madan Mohan Koyyalamudi1bed5982012-10-22 14:38:06 -0700[diff] [blame]172 VOS_TRACE( VOS_MODULE_ID_SAP, VOS_TRACE_LEVEL_INFO_HIGH,
Madan Mohan Koyyalamudi87054ba2012-11-02 13:24:12 -0700[diff] [blame]173 "Enter: %s", __func__);
Madan Mohan Koyyalamudi5aef2af2012-10-05 11:56:27 -0700[diff] [blame]174
Gopichand Nakkala936715f2013-03-18 19:48:10 +0530[diff] [blame]175 if (NULL == pvosGCtx)
176 {
177 VOS_TRACE( VOS_MODULE_ID_SAP, VOS_TRACE_LEVEL_FATAL,
178 "SAP Global Context is NULL");
179 return -EINVAL;
180 }
181
182 pSapCtx = VOS_GET_SAP_CB(pvosGCtx);
183 if (NULL == pSapCtx)
184 {
185 VOS_TRACE( VOS_MODULE_ID_SAP, VOS_TRACE_LEVEL_FATAL,
186 "SAP Context is NULL");
187 return -EINVAL;
188 }
189
Madan Mohan Koyyalamudi1bed5982012-10-22 14:38:06 -0700[diff] [blame]190 if (NULL != pSapCtx->SapChnlList.channelList)
191 {
192 sapCleanupChannelList();
193 }
Madan Mohan Koyyalamudi5aef2af2012-10-05 11:56:27 -0700[diff] [blame]194
Mahesh Kumar Kalikot Veetil2aad8d82013-02-07 12:31:28 -0800[diff] [blame]195 param = strchr(ptr, ' ');
Madan Mohan Koyyalamudi1bed5982012-10-22 14:38:06 -0700[diff] [blame]196 /*no argument after the command*/
Mahesh Kumar Kalikot Veetil2aad8d82013-02-07 12:31:28 -0800[diff] [blame]197 if (NULL == param)
Madan Mohan Koyyalamudi1bed5982012-10-22 14:38:06 -0700[diff] [blame]198 {
Mahesh Kumar Kalikot Veetil2aad8d82013-02-07 12:31:28 -0800[diff] [blame]199 return -EINVAL;
Madan Mohan Koyyalamudi1bed5982012-10-22 14:38:06 -0700[diff] [blame]200 }
Madan Mohan Koyyalamudi5aef2af2012-10-05 11:56:27 -0700[diff] [blame]201
Madan Mohan Koyyalamudi1bed5982012-10-22 14:38:06 -0700[diff] [blame]202 /*no space after the command*/
Mahesh Kumar Kalikot Veetil2aad8d82013-02-07 12:31:28 -0800[diff] [blame]203 else if (SPACE_ASCII_VALUE != *param)
Madan Mohan Koyyalamudi1bed5982012-10-22 14:38:06 -0700[diff] [blame]204 {
Mahesh Kumar Kalikot Veetil2aad8d82013-02-07 12:31:28 -0800[diff] [blame]205 return -EINVAL;
Madan Mohan Koyyalamudi1bed5982012-10-22 14:38:06 -0700[diff] [blame]206 }
Madan Mohan Koyyalamudi5aef2af2012-10-05 11:56:27 -0700[diff] [blame]207
Madan Mohan Koyyalamudi1bed5982012-10-22 14:38:06 -0700[diff] [blame]208 param++;
Madan Mohan Koyyalamudi5aef2af2012-10-05 11:56:27 -0700[diff] [blame]209
Madan Mohan Koyyalamudi1bed5982012-10-22 14:38:06 -0700[diff] [blame]210 /*removing empty spaces*/
211 while((SPACE_ASCII_VALUE == *param)&& ('\0' != *param) ) param++;
Madan Mohan Koyyalamudi5aef2af2012-10-05 11:56:27 -0700[diff] [blame]212
Madan Mohan Koyyalamudi1bed5982012-10-22 14:38:06 -0700[diff] [blame]213 /*no argument followed by spaces*/
214 if('\0' == *param)
215 {
216 return -EINVAL;
217 }
Madan Mohan Koyyalamudi5aef2af2012-10-05 11:56:27 -0700[diff] [blame]218
Madan Mohan Koyyalamudi1bed5982012-10-22 14:38:06 -0700[diff] [blame]219 /*getting the first argument ie the number of channels*/
220 sscanf(param, "%d ", &tempInt);
Madan Mohan Koyyalamudi5aef2af2012-10-05 11:56:27 -0700[diff] [blame]221
Madan Mohan Koyyalamudi1bed5982012-10-22 14:38:06 -0700[diff] [blame]222 VOS_TRACE( VOS_MODULE_ID_SAP, VOS_TRACE_LEVEL_INFO_HIGH,
Gopichand Nakkala936715f2013-03-18 19:48:10 +0530[diff] [blame]223 "Number of channel added are: %d", tempInt);
Madan Mohan Koyyalamudi5aef2af2012-10-05 11:56:27 -0700[diff] [blame]224
Madan Mohan Koyyalamudi1bed5982012-10-22 14:38:06 -0700[diff] [blame]225 /*allocating space for the desired number of channels*/
Gopichand Nakkala936715f2013-03-18 19:48:10 +0530[diff] [blame]226 pSapCtx->SapChnlList.channelList = (v_U8_t *)vos_mem_malloc(tempInt);
Madan Mohan Koyyalamudi5aef2af2012-10-05 11:56:27 -0700[diff] [blame]227
Gopichand Nakkala936715f2013-03-18 19:48:10 +0530[diff] [blame]228 if (NULL == pSapCtx->SapChnlList.channelList)
229 {
230 VOS_TRACE( VOS_MODULE_ID_SAP, VOS_TRACE_LEVEL_ERROR,
231 "In %s, VOS_MALLOC_ERR", __func__);
232 return -EINVAL;
233 }
234
235 pSapCtx->SapChnlList.numChannel = tempInt;
Madan Mohan Koyyalamudi1bed5982012-10-22 14:38:06 -0700[diff] [blame]236 for(j=0;j<pSapCtx->SapChnlList.numChannel;j++)
237 {
238
239 /*param pointing to the beginning of first space after number of channels*/
240 param = strpbrk( param, " " );
241 /*no channel list after the number of channels argument*/
242 if (NULL == param)
243 {
244 sapCleanupChannelList();
245 return -EINVAL;
246 }
247
248 param++;
249
250 /*removing empty space*/
251 while((SPACE_ASCII_VALUE == *param) && ('\0' != *param) ) param++;
252
253 /*no channel list after the number of channels argument and spaces*/
254 if( '\0' == *param )
255 {
256 sapCleanupChannelList();
257 return -EINVAL;
258 }
259
260 sscanf(param, "%d ", &tempInt);
261 pSapCtx->SapChnlList.channelList[j] = tempInt;
262
263 VOS_TRACE( VOS_MODULE_ID_SAP, VOS_TRACE_LEVEL_INFO_HIGH,
264 "Channel %d added to preferred channel list",
265 pSapCtx->SapChnlList.channelList[j] );
266
267 }
268
269 /*extra arguments check*/
270 param = strpbrk( param, " " );
271 if (NULL != param)
272 {
273 while((SPACE_ASCII_VALUE == *param) && ('\0' != *param) ) param++;
274
275 if('\0' != *param)
276 {
277 sapCleanupChannelList();
278 return -EINVAL;
279 }
280 }
281
282 VOS_TRACE( VOS_MODULE_ID_SAP, VOS_TRACE_LEVEL_INFO_HIGH,
Madan Mohan Koyyalamudi87054ba2012-11-02 13:24:12 -0700[diff] [blame]283 "Exit: %s", __func__);
Madan Mohan Koyyalamudi1bed5982012-10-22 14:38:06 -0700[diff] [blame]284
285 return 0;
Madan Mohan Koyyalamudi5aef2af2012-10-05 11:56:27 -0700[diff] [blame]286}
287
288/*==========================================================================
289 FUNCTION sapSelectPreferredChannelFromChannelList
290
291 DESCRIPTION
292 Function sapSelectPreferredChannelFromChannelList calculates the best channel
293 among the configured channel list. If channel list not configured then returns
294 the best channel calculated among all the channel list.
295
296 DEPENDENCIES
297 NA.
298
299 PARAMETERS
300
301 IN
302 *pSpectInfoParams : Pointer to tSapChSelSpectInfo structure
303 bestChNum: best channel already calculated among all the chanels
304 pSapCtx: having info of channel list from which best channel is selected
305
306 RETURN VALUE
307 v_U8_t: best channel
308============================================================================*/
309v_U8_t sapSelectPreferredChannelFromChannelList(v_U8_t bestChNum,
Madan Mohan Koyyalamudi1bed5982012-10-22 14:38:06 -0700[diff] [blame]310 ptSapContext pSapCtx,
311 tSapChSelSpectInfo *pSpectInfoParams)
312{
313 v_U8_t j = 0;
314 v_U8_t count = 0;
Madan Mohan Koyyalamudi5aef2af2012-10-05 11:56:27 -0700[diff] [blame]315
316 //If Channel List is not Configured don't do anything
317 //Else return the Best Channel from the Channel List
Madan Mohan Koyyalamudi1bed5982012-10-22 14:38:06 -0700[diff] [blame]318 if((NULL == pSapCtx->SapChnlList.channelList) ||
319 (NULL == pSpectInfoParams) ||
320 (0 == pSapCtx->SapChnlList.numChannel))
Madan Mohan Koyyalamudi5aef2af2012-10-05 11:56:27 -0700[diff] [blame]321 {
Madan Mohan Koyyalamudi1bed5982012-10-22 14:38:06 -0700[diff] [blame]322 return bestChNum;
323 }
324
325 if (bestChNum > 0 && bestChNum <= 252)
326 {
327 for(count=0; count < pSpectInfoParams->numSpectChans ; count++)
Madan Mohan Koyyalamudi5aef2af2012-10-05 11:56:27 -0700[diff] [blame]328 {
329 bestChNum = (v_U8_t)pSpectInfoParams->pSpectCh[count].chNum;
330 // Select the best channel from allowed list
331 for(j=0;j< pSapCtx->SapChnlList.numChannel;j++)
Madan Mohan Koyyalamudi1bed5982012-10-22 14:38:06 -0700[diff] [blame]332 {
Madan Mohan Koyyalamudi5aef2af2012-10-05 11:56:27 -0700[diff] [blame]333 if( (pSapCtx->SapChnlList.channelList[j]) == bestChNum)
334 {
Madan Mohan Koyyalamudi1bed5982012-10-22 14:38:06 -0700[diff] [blame]335 VOS_TRACE( VOS_MODULE_ID_SAP, VOS_TRACE_LEVEL_INFO_HIGH,
336 "Best channel computed from Channel List is: %d",
337 bestChNum);
338 return bestChNum;
Madan Mohan Koyyalamudi5aef2af2012-10-05 11:56:27 -0700[diff] [blame]339 }
340 }
Madan Mohan Koyyalamudi1bed5982012-10-22 14:38:06 -0700[diff] [blame]341 }
342
343 return SAP_CHANNEL_NOT_SELECTED;
Madan Mohan Koyyalamudi5aef2af2012-10-05 11:56:27 -0700[diff] [blame]344 }
345 else
346 return SAP_CHANNEL_NOT_SELECTED;
347}
348
349
Jeff Johnson295189b2012-06-20 16:38:30 -0700[diff] [blame]350/*==========================================================================
351 FUNCTION sapChanSelInit
352
353 DESCRIPTION
354 Function sapChanSelInit allocates the memory, intializes the
355 structures used by the channel selection algorithm
356
357 DEPENDENCIES
358 NA.
359
360 PARAMETERS
361
362 IN
363 *pSpectInfoParams : Pointer to tSapChSelSpectInfo structure
364
365 RETURN VALUE
366 v_BOOL_t: Success or FAIL
367
368 SIDE EFFECTS
369============================================================================*/
370v_BOOL_t sapChanSelInit(tHalHandle halHandle, tSapChSelSpectInfo *pSpectInfoParams)
371{
372 tSapSpectChInfo *pSpectCh = NULL;
373 v_U8_t *pChans = NULL;
374 v_U16_t channelnum = 0;
375 tpAniSirGlobal pMac = PMAC_STRUCT(halHandle);
376
Madan Mohan Koyyalamudi87054ba2012-11-02 13:24:12 -0700[diff] [blame]377 VOS_TRACE(VOS_MODULE_ID_SAP, VOS_TRACE_LEVEL_INFO_HIGH, "In %s", __func__);
Jeff Johnson295189b2012-06-20 16:38:30 -0700[diff] [blame]378
379 // Channels for that 2.4GHz band
380 //Considered only for 2.4GHz need to change in future to support 5GHz support
381 pSpectInfoParams->numSpectChans = pMac->scan.base20MHzChannels.numChannels;
382
383 // Allocate memory for weight computation of 2.4GHz
384 pSpectCh = (tSapSpectChInfo *)vos_mem_malloc((pSpectInfoParams->numSpectChans) * sizeof(*pSpectCh));
385
386 if(pSpectCh == NULL) {
Madan Mohan Koyyalamudi87054ba2012-11-02 13:24:12 -0700[diff] [blame]387 VOS_TRACE(VOS_MODULE_ID_SAP, VOS_TRACE_LEVEL_ERROR, "In %s, VOS_MALLOC_ERR", __func__);
Jeff Johnson295189b2012-06-20 16:38:30 -0700[diff] [blame]388 return eSAP_FALSE;
389 }
390
391 vos_mem_zero(pSpectCh, (pSpectInfoParams->numSpectChans) * sizeof(*pSpectCh));
392
393 // Initialize the pointers in the DfsParams to the allocated memory
394 pSpectInfoParams->pSpectCh = pSpectCh;
395
396 pChans = pMac->scan.base20MHzChannels.channelList;
397
398 // Fill the channel number in the spectrum in the operating freq band
399 for (channelnum = 0; channelnum < pSpectInfoParams->numSpectChans; channelnum++) {
400
401 if(*pChans == 14 ) //OFDM rates are not supported on channel 14
402 continue;
403 pSpectCh->chNum = *pChans;
404 pSpectCh->valid = eSAP_TRUE;
405 pSpectCh->rssiAgr = SOFTAP_MIN_RSSI;// Initialise for all channels
Madan Mohan Koyyalamudi527935a2012-12-04 16:41:16 -0800[diff] [blame]406 pSpectCh->channelWidth = SOFTAP_HT20_CHANNELWIDTH; // Initialise 20MHz for all the Channels
Jeff Johnson295189b2012-06-20 16:38:30 -0700[diff] [blame]407 pSpectCh++;
408 pChans++;
409 }
410 return eSAP_TRUE;
411}
412
413/*==========================================================================
414 FUNCTION sapweightRssiCount
415
416 DESCRIPTION
417 Function weightRssiCount calculates the channel weight due to rssi
418 and data count(here number of BSS observed)
419
420 DEPENDENCIES
421 NA.
422
423 PARAMETERS
424
425 IN
426 rssi : Max signal strength receieved from a BSS for the channel
427 count : Number of BSS observed in the channel
428
429 RETURN VALUE
430 v_U32_t : Calculated channel weight based on above two
431
432 SIDE EFFECTS
433============================================================================*/
434v_U32_t sapweightRssiCount(v_S7_t rssi, v_U16_t count)
435{
436 v_S31_t rssiWeight=0;
437 v_S31_t countWeight=0;
438 v_U32_t rssicountWeight=0;
439
440 // Weight from RSSI
441 rssiWeight = SOFTAP_RSSI_WEIGHT * (rssi - SOFTAP_MIN_RSSI)
442 /(SOFTAP_MAX_RSSI - SOFTAP_MIN_RSSI);
Madan Mohan Koyyalamudi8c8bb1e2013-08-26 23:13:07 +0530[diff] [blame^]443
Jeff Johnson295189b2012-06-20 16:38:30 -0700[diff] [blame]444 if(rssiWeight > SOFTAP_RSSI_WEIGHT)
445 rssiWeight = SOFTAP_RSSI_WEIGHT;
446 else if (rssiWeight < 0)
447 rssiWeight = 0;
448
449 // Weight from data count
450 countWeight = SOFTAP_COUNT_WEIGHT * (count - SOFTAP_MIN_COUNT)
451 /(SOFTAP_MAX_COUNT - SOFTAP_MIN_COUNT);
Madan Mohan Koyyalamudi8c8bb1e2013-08-26 23:13:07 +0530[diff] [blame^]452
Jeff Johnson295189b2012-06-20 16:38:30 -0700[diff] [blame]453 if(countWeight > SOFTAP_COUNT_WEIGHT)
454 countWeight = SOFTAP_COUNT_WEIGHT;
455 else if (countWeight < 0)
456 countWeight = 0;
Madan Mohan Koyyalamudi8c8bb1e2013-08-26 23:13:07 +0530[diff] [blame^]457
Jeff Johnson295189b2012-06-20 16:38:30 -0700[diff] [blame]458 rssicountWeight = rssiWeight + countWeight;
459
460 VOS_TRACE( VOS_MODULE_ID_SAP, VOS_TRACE_LEVEL_INFO_HIGH, "In %s, rssiWeight=%d, countWeight=%d, rssicountWeight=%d",
Madan Mohan Koyyalamudi87054ba2012-11-02 13:24:12 -0700[diff] [blame]461 __func__, rssiWeight, countWeight, rssicountWeight);
Jeff Johnson295189b2012-06-20 16:38:30 -0700[diff] [blame]462
463 return(rssicountWeight);
464}
465
Venkata Prathyusha Kuntupallie2e72082013-01-30 17:37:50 -0800[diff] [blame]466
467/*==========================================================================
468 FUNCTION sapInterferenceRssiCount
469
470 DESCRIPTION
471 Function sapInterferenceRssiCount Considers the Adjacent channel rssi
472 and data count(here number of BSS observed)
473
474 DEPENDENCIES
475 NA.
476
477 PARAMETERS
478
479 pSpectCh : Channel Information
480
481 RETURN VALUE
482 NA.
483
484 SIDE EFFECTS
485============================================================================*/
486void sapInterferenceRssiCount(tSapSpectChInfo *pSpectCh)
487{
488 tSapSpectChInfo *pExtSpectCh = NULL;
Venkata Prathyusha Kuntupalli5c9e4e82013-04-15 13:10:09 -0700[diff] [blame]489 v_S31_t rssi;
Madan Mohan Koyyalamudi8c8bb1e2013-08-26 23:13:07 +0530[diff] [blame^]490
Venkata Prathyusha Kuntupallie2e72082013-01-30 17:37:50 -0800[diff] [blame]491 switch(pSpectCh->chNum)
492 {
493 case CHANNEL_1:
494 pExtSpectCh = (pSpectCh + 1);
Madan Mohan Koyyalamudi8c8bb1e2013-08-26 23:13:07 +0530[diff] [blame^]495 if (pExtSpectCh != NULL)
Venkata Prathyusha Kuntupallie2e72082013-01-30 17:37:50 -0800[diff] [blame]496 {
497 ++pExtSpectCh->bssCount;
Madan Mohan Koyyalamudi8c8bb1e2013-08-26 23:13:07 +0530[diff] [blame^]498 rssi = pSpectCh->rssiAgr +
499 SAP_24GHZ_FIRST_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY;
Venkata Prathyusha Kuntupalli5c9e4e82013-04-15 13:10:09 -0700[diff] [blame]500 if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi))
501 {
502 pExtSpectCh->rssiAgr = rssi;
503 }
Madan Mohan Koyyalamudi8c8bb1e2013-08-26 23:13:07 +0530[diff] [blame^]504 if (pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI)
Venkata Prathyusha Kuntupallie2e72082013-01-30 17:37:50 -0800[diff] [blame]505 pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI;
506 }
507 pExtSpectCh = (pSpectCh + 2);
Madan Mohan Koyyalamudi8c8bb1e2013-08-26 23:13:07 +0530[diff] [blame^]508 if (pExtSpectCh != NULL)
Venkata Prathyusha Kuntupallie2e72082013-01-30 17:37:50 -0800[diff] [blame]509 {
510 ++pExtSpectCh->bssCount;
Madan Mohan Koyyalamudi8c8bb1e2013-08-26 23:13:07 +0530[diff] [blame^]511 rssi = pSpectCh->rssiAgr +
512 SAP_24GHZ_SEC_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY;
Venkata Prathyusha Kuntupalli5c9e4e82013-04-15 13:10:09 -0700[diff] [blame]513 if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi))
514 {
515 pExtSpectCh->rssiAgr = rssi;
516 }
Venkata Prathyusha Kuntupallie2e72082013-01-30 17:37:50 -0800[diff] [blame]517 if(pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI)
518 pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI;
519 }
520 pExtSpectCh = (pSpectCh + 3);
Madan Mohan Koyyalamudi8c8bb1e2013-08-26 23:13:07 +0530[diff] [blame^]521 if (pExtSpectCh != NULL)
Venkata Prathyusha Kuntupallie2e72082013-01-30 17:37:50 -0800[diff] [blame]522 {
523 ++pExtSpectCh->bssCount;
Madan Mohan Koyyalamudi8c8bb1e2013-08-26 23:13:07 +0530[diff] [blame^]524 rssi = pSpectCh->rssiAgr +
525 SAP_24GHZ_THIRD_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY;
Venkata Prathyusha Kuntupalli5c9e4e82013-04-15 13:10:09 -0700[diff] [blame]526 if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi))
527 {
528 pExtSpectCh->rssiAgr = rssi;
529 }
Venkata Prathyusha Kuntupallie2e72082013-01-30 17:37:50 -0800[diff] [blame]530 if(pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI)
531 pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI;
532 }
533 pExtSpectCh = (pSpectCh + 4);
Madan Mohan Koyyalamudi8c8bb1e2013-08-26 23:13:07 +0530[diff] [blame^]534 if (pExtSpectCh != NULL)
Venkata Prathyusha Kuntupallie2e72082013-01-30 17:37:50 -0800[diff] [blame]535 {
536 ++pExtSpectCh->bssCount;
Madan Mohan Koyyalamudi8c8bb1e2013-08-26 23:13:07 +0530[diff] [blame^]537 rssi = pSpectCh->rssiAgr +
538 SAP_24GHZ_FOURTH_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY;
Venkata Prathyusha Kuntupalli5c9e4e82013-04-15 13:10:09 -0700[diff] [blame]539 if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi))
540 {
541 pExtSpectCh->rssiAgr = rssi;
542 }
Madan Mohan Koyyalamudi8c8bb1e2013-08-26 23:13:07 +0530[diff] [blame^]543 if (pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI)
Venkata Prathyusha Kuntupallie2e72082013-01-30 17:37:50 -0800[diff] [blame]544 pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI;
545 }
546 break;
Madan Mohan Koyyalamudi8c8bb1e2013-08-26 23:13:07 +0530[diff] [blame^]547
Venkata Prathyusha Kuntupallie2e72082013-01-30 17:37:50 -0800[diff] [blame]548 case CHANNEL_2:
549 pExtSpectCh = (pSpectCh - 1);
Madan Mohan Koyyalamudi8c8bb1e2013-08-26 23:13:07 +0530[diff] [blame^]550 if (pExtSpectCh != NULL)
551 {
552 ++pExtSpectCh->bssCount;
553 rssi = pSpectCh->rssiAgr +
554 SAP_24GHZ_FIRST_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY;
555 if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi))
556 {
557 pExtSpectCh->rssiAgr = rssi;
558 }
559 if (pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI)
560 pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI;
561 }
562 pExtSpectCh = (pSpectCh + 1);
563 if (pExtSpectCh != NULL)
564 {
565 ++pExtSpectCh->bssCount;
566 rssi = pSpectCh->rssiAgr +
567 SAP_24GHZ_FIRST_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY;
568 if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi))
569 {
570 pExtSpectCh->rssiAgr = rssi;
571 }
572 if (pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI)
573 pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI;
574 }
575 pExtSpectCh = (pSpectCh + 2);
576 if (pExtSpectCh != NULL)
577 {
578 ++pExtSpectCh->bssCount;
579 rssi = pSpectCh->rssiAgr +
580 SAP_24GHZ_SEC_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY;
581 if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi))
582 {
583 pExtSpectCh->rssiAgr = rssi;
584 }
585 if (pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI)
586 pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI;
587 }
588 pExtSpectCh = (pSpectCh + 3);
589 if (pExtSpectCh != NULL)
590 {
591 ++pExtSpectCh->bssCount;
592 rssi = pSpectCh->rssiAgr +
593 SAP_24GHZ_THIRD_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY;
594 if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi))
595 {
596 pExtSpectCh->rssiAgr = rssi;
597 }
598 if (pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI)
599 pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI;
600 }
601 pExtSpectCh = (pSpectCh + 4);
602 if (pExtSpectCh != NULL)
603 {
604 ++pExtSpectCh->bssCount;
605 rssi = pSpectCh->rssiAgr +
606 SAP_24GHZ_THIRD_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY;
607 if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi))
608 {
609 pExtSpectCh->rssiAgr = rssi;
610 }
611 if (pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI)
612 pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI;
613 }
614 break;
615 case CHANNEL_3:
616 pExtSpectCh = (pSpectCh - 2);
617 if (pExtSpectCh != NULL)
618 {
619 ++pExtSpectCh->bssCount;
620 rssi = pSpectCh->rssiAgr +
621 SAP_24GHZ_SEC_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY;
622 if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi))
623 {
624 pExtSpectCh->rssiAgr = rssi;
625 }
626 if (pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI)
627 pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI;
628 }
629 pExtSpectCh = (pSpectCh - 1);
630 if (pExtSpectCh != NULL)
631 {
632 ++pExtSpectCh->bssCount;
633 rssi = pSpectCh->rssiAgr +
634 SAP_24GHZ_FIRST_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY;
635 if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi))
636 {
637 pExtSpectCh->rssiAgr = rssi;
638 }
639 if (pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI)
640 pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI;
641 }
642 pExtSpectCh = (pSpectCh + 1);
643 if (pExtSpectCh != NULL)
644 {
645 ++pExtSpectCh->bssCount;
646 rssi = pSpectCh->rssiAgr +
647 SAP_24GHZ_FIRST_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY;
648 if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi))
649 {
650 pExtSpectCh->rssiAgr = rssi;
651 }
652 if (pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI)
653 pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI;
654 }
655 pExtSpectCh = (pSpectCh + 2);
656 if (pExtSpectCh != NULL)
657 {
658 ++pExtSpectCh->bssCount;
659 rssi = pSpectCh->rssiAgr +
660 SAP_24GHZ_SEC_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY;
661 if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi))
662 {
663 pExtSpectCh->rssiAgr = rssi;
664 }
665 if (pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI)
666 pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI;
667 }
668 pExtSpectCh = (pSpectCh + 3);
669 if (pExtSpectCh != NULL)
670 {
671 ++pExtSpectCh->bssCount;
672 rssi = pSpectCh->rssiAgr +
673 SAP_24GHZ_THIRD_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY;
674 if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi))
675 {
676 pExtSpectCh->rssiAgr = rssi;
677 }
678 if (pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI)
679 pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI;
680 }
681 pExtSpectCh = (pSpectCh + 4);
682 if (pExtSpectCh != NULL)
683 {
684 ++pExtSpectCh->bssCount;
685 rssi = pSpectCh->rssiAgr +
686 SAP_24GHZ_FOURTH_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY;
687 if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi))
688 {
689 pExtSpectCh->rssiAgr = rssi;
690 }
691 if (pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI)
692 pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI;
693 }
694 break;
695 case CHANNEL_4:
696 pExtSpectCh = (pSpectCh - 3);
Venkata Prathyusha Kuntupallie2e72082013-01-30 17:37:50 -0800[diff] [blame]697 if(pExtSpectCh != NULL)
698 {
699 ++pExtSpectCh->bssCount;
Madan Mohan Koyyalamudi8c8bb1e2013-08-26 23:13:07 +0530[diff] [blame^]700 rssi = pSpectCh->rssiAgr +
701 SAP_24GHZ_THIRD_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY;
702 if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi))
703 {
704 pExtSpectCh->rssiAgr = rssi;
705 }
706 if (pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI)
707 pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI;
708 }
709 pExtSpectCh = (pSpectCh - 2);
710 if (pExtSpectCh != NULL)
711 {
712 ++pExtSpectCh->bssCount;
713 rssi = pSpectCh->rssiAgr +
714 SAP_24GHZ_SEC_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY;
715 if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi))
716 {
717 pExtSpectCh->rssiAgr = rssi;
718 }
719 if (pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI)
720 pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI;
721 }
722 pExtSpectCh = (pSpectCh - 1);
723 if (pExtSpectCh != NULL)
724 {
725 ++pExtSpectCh->bssCount;
726 rssi = pSpectCh->rssiAgr +
727 SAP_24GHZ_FIRST_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY;
Venkata Prathyusha Kuntupalli5c9e4e82013-04-15 13:10:09 -0700[diff] [blame]728 if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi))
729 {
730 pExtSpectCh->rssiAgr = rssi;
731 }
Venkata Prathyusha Kuntupallie2e72082013-01-30 17:37:50 -0800[diff] [blame]732 if(pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI)
733 pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI;
734 }
735 pExtSpectCh = (pSpectCh + 1);
Madan Mohan Koyyalamudi8c8bb1e2013-08-26 23:13:07 +0530[diff] [blame^]736 if (pExtSpectCh != NULL)
Venkata Prathyusha Kuntupallie2e72082013-01-30 17:37:50 -0800[diff] [blame]737 {
738 ++pExtSpectCh->bssCount;
Madan Mohan Koyyalamudi8c8bb1e2013-08-26 23:13:07 +0530[diff] [blame^]739 rssi = pSpectCh->rssiAgr +
740 SAP_24GHZ_FIRST_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY;
741 if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi))
742 {
743 pExtSpectCh->rssiAgr = rssi;
744 }
745 if (pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI)
746 pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI;
747 }
748 pExtSpectCh = (pSpectCh + 2);
749 if (pExtSpectCh != NULL)
750 {
751 ++pExtSpectCh->bssCount;
752 rssi = pSpectCh->rssiAgr +
753 SAP_24GHZ_SEC_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY;
754 if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi))
755 {
756 pExtSpectCh->rssiAgr = rssi;
757 }
758 if (pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI)
759 pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI;
760 }
761 pExtSpectCh = (pSpectCh + 3);
762 if (pExtSpectCh != NULL)
763 {
764 ++pExtSpectCh->bssCount;
765 rssi = pSpectCh->rssiAgr +
766 SAP_24GHZ_THIRD_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY;
767 if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi))
768 {
769 pExtSpectCh->rssiAgr = rssi;
770 }
771 if (pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI)
772 pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI;
773 }
774 pExtSpectCh = (pSpectCh + 4);
775 if (pExtSpectCh != NULL)
776 {
777 ++pExtSpectCh->bssCount;
778 rssi = pSpectCh->rssiAgr +
779 SAP_24GHZ_FOURTH_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY;
780 if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi))
781 {
782 pExtSpectCh->rssiAgr = rssi;
783 }
784 if (pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI)
785 pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI;
786 }
787 break;
788
789 case CHANNEL_5:
790 case CHANNEL_6:
791 case CHANNEL_7:
792 pExtSpectCh = (pSpectCh - 4);
793 if (pExtSpectCh != NULL)
794 {
795 ++pExtSpectCh->bssCount;
796 rssi = pSpectCh->rssiAgr +
797 SAP_24GHZ_FOURTH_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY;
Venkata Prathyusha Kuntupalli5c9e4e82013-04-15 13:10:09 -0700[diff] [blame]798 if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi))
799 {
800 pExtSpectCh->rssiAgr = rssi;
801 }
Venkata Prathyusha Kuntupallie2e72082013-01-30 17:37:50 -0800[diff] [blame]802 if(pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI)
803 pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI;
804 }
Madan Mohan Koyyalamudi8c8bb1e2013-08-26 23:13:07 +0530[diff] [blame^]805 pExtSpectCh = (pSpectCh - 3);
806 if (pExtSpectCh != NULL)
Venkata Prathyusha Kuntupallie2e72082013-01-30 17:37:50 -0800[diff] [blame]807 {
808 ++pExtSpectCh->bssCount;
Madan Mohan Koyyalamudi8c8bb1e2013-08-26 23:13:07 +0530[diff] [blame^]809 rssi = pSpectCh->rssiAgr +
810 SAP_24GHZ_THIRD_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY;
Venkata Prathyusha Kuntupalli5c9e4e82013-04-15 13:10:09 -0700[diff] [blame]811 if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi))
812 {
813 pExtSpectCh->rssiAgr = rssi;
814 }
Venkata Prathyusha Kuntupallie2e72082013-01-30 17:37:50 -0800[diff] [blame]815 if(pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI)
816 pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI;
817 }
Madan Mohan Koyyalamudi8c8bb1e2013-08-26 23:13:07 +0530[diff] [blame^]818 pExtSpectCh = (pSpectCh - 2);
819 if (pExtSpectCh != NULL)
820 {
821 ++pExtSpectCh->bssCount;
822 rssi = pSpectCh->rssiAgr +
823 SAP_24GHZ_SEC_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY;
824 if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi))
825 {
826 pExtSpectCh->rssiAgr = rssi;
827 }
828 if (pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI)
829 pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI;
830 }
831 pExtSpectCh = (pSpectCh - 1);
832 if(pExtSpectCh != NULL)
833 {
834 ++pExtSpectCh->bssCount;
835 rssi = pSpectCh->rssiAgr +
836 SAP_24GHZ_FIRST_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY;
837 if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi))
838 {
839 pExtSpectCh->rssiAgr = rssi;
840 }
841 if (pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI)
842 pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI;
843 }
844 pExtSpectCh = (pSpectCh + 1);
845 if (pExtSpectCh != NULL)
846 {
847 ++pExtSpectCh->bssCount;
848 rssi = pSpectCh->rssiAgr +
849 SAP_24GHZ_FIRST_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY;
850 if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi))
851 {
852 pExtSpectCh->rssiAgr = rssi;
853 }
854 if (pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI)
855 pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI;
856 }
857 pExtSpectCh = (pSpectCh + 2);
858 if(pExtSpectCh != NULL)
859 {
860 ++pExtSpectCh->bssCount;
861 rssi = pSpectCh->rssiAgr +
862 SAP_24GHZ_SEC_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY;
863 if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi))
864 {
865 pExtSpectCh->rssiAgr = rssi;
866 }
867 if (pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI)
868 pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI;
869 }
Venkata Prathyusha Kuntupallie2e72082013-01-30 17:37:50 -0800[diff] [blame]870 pExtSpectCh = (pSpectCh + 3);
871 if(pExtSpectCh != NULL)
872 {
873 ++pExtSpectCh->bssCount;
Madan Mohan Koyyalamudi8c8bb1e2013-08-26 23:13:07 +0530[diff] [blame^]874 rssi = pSpectCh->rssiAgr +
875 SAP_24GHZ_THIRD_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY;
876 if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi))
877 {
878 pExtSpectCh->rssiAgr = rssi;
879 }
880 if (pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI)
881 pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI;
882 }
883 pExtSpectCh = (pSpectCh + 4);
884 if (pExtSpectCh != NULL)
885 {
886 ++pExtSpectCh->bssCount;
887 rssi = pSpectCh->rssiAgr +
888 SAP_24GHZ_FOURTH_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY;
Venkata Prathyusha Kuntupalli5c9e4e82013-04-15 13:10:09 -0700[diff] [blame]889 if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi))
890 {
891 pExtSpectCh->rssiAgr = rssi;
892 }
Venkata Prathyusha Kuntupallie2e72082013-01-30 17:37:50 -0800[diff] [blame]893 if(pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI)
894 pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI;
895 }
896 break;
Madan Mohan Koyyalamudi8c8bb1e2013-08-26 23:13:07 +0530[diff] [blame^]897
Venkata Prathyusha Kuntupallie2e72082013-01-30 17:37:50 -0800[diff] [blame]898 case CHANNEL_8:
Venkata Prathyusha Kuntupallie2e72082013-01-30 17:37:50 -0800[diff] [blame]899 pExtSpectCh = (pSpectCh - 4);
900 if(pExtSpectCh != NULL)
901 {
902 ++pExtSpectCh->bssCount;
Madan Mohan Koyyalamudi8c8bb1e2013-08-26 23:13:07 +0530[diff] [blame^]903 rssi = pSpectCh->rssiAgr +
904 SAP_24GHZ_FOURTH_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY;
905 if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi))
906 {
907 pExtSpectCh->rssiAgr = rssi;
908 }
909 if (pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI)
910 pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI;
911 }
912
913 pExtSpectCh = (pSpectCh - 3);
914 if (pExtSpectCh != NULL)
915 {
916 ++pExtSpectCh->bssCount;
917 rssi = pSpectCh->rssiAgr +
918 SAP_24GHZ_THIRD_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY;
919 if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi))
920 {
921 pExtSpectCh->rssiAgr = rssi;
922 }
923 if (pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI)
924 pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI;
925 }
926 pExtSpectCh = (pSpectCh - 2);
927 if (pExtSpectCh != NULL)
928 {
929 ++pExtSpectCh->bssCount;
930 rssi = pSpectCh->rssiAgr +
931 SAP_24GHZ_SEC_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY;
932 if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi))
933 {
934 pExtSpectCh->rssiAgr = rssi;
935 }
936 if (pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI)
937 pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI;
938 }
939 pExtSpectCh = (pSpectCh - 1);
940 if (pExtSpectCh != NULL)
941 {
942 ++pExtSpectCh->bssCount;
943 rssi = pSpectCh->rssiAgr +
944 SAP_24GHZ_FIRST_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY;
945 if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi))
946 {
947 pExtSpectCh->rssiAgr = rssi;
948 }
949 if (pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI)
950 pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI;
951 }
952 pExtSpectCh = (pSpectCh + 1);
953 if (pExtSpectCh != NULL)
954 {
955 ++pExtSpectCh->bssCount;
956 rssi = pSpectCh->rssiAgr +
957 SAP_24GHZ_FIRST_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY;
958 if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi))
959 {
960 pExtSpectCh->rssiAgr = rssi;
961 }
962 if (pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI)
963 pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI;
964 }
965 pExtSpectCh = (pSpectCh + 2);
966 if (pExtSpectCh != NULL)
967 {
968 ++pExtSpectCh->bssCount;
969 rssi = pSpectCh->rssiAgr +
970 SAP_24GHZ_SEC_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY;
971 if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi))
972 {
973 pExtSpectCh->rssiAgr = rssi;
974 }
975 if (pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI)
976 pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI;
977 }
978 pExtSpectCh = (pSpectCh + 3);
979 if (pExtSpectCh != NULL)
980 {
981 ++pExtSpectCh->bssCount;
982 rssi = pSpectCh->rssiAgr +
983 SAP_24GHZ_THIRD_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY;
984 if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi))
985 {
986 pExtSpectCh->rssiAgr = rssi;
987 }
988 if (pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI)
989 pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI;
990 }
991 break;
992
993 case CHANNEL_9:
994 pExtSpectCh = (pSpectCh - 4);
995 if (pExtSpectCh != NULL)
996 {
997 ++pExtSpectCh->bssCount;
998 rssi = pSpectCh->rssiAgr +
999 SAP_24GHZ_FOURTH_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY;
Venkata Prathyusha Kuntupalli5c9e4e82013-04-15 13:10:09 -0700[diff] [blame]1000 if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi))
1001 {
1002 pExtSpectCh->rssiAgr = rssi;
1003 }
Venkata Prathyusha Kuntupallie2e72082013-01-30 17:37:50 -0800[diff] [blame]1004 if(pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI)
1005 pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI;
1006 }
Madan Mohan Koyyalamudi8c8bb1e2013-08-26 23:13:07 +0530[diff] [blame^]1007
1008 pExtSpectCh = (pSpectCh - 3);
1009 if (pExtSpectCh != NULL)
1010 {
1011 ++pExtSpectCh->bssCount;
1012 rssi = pSpectCh->rssiAgr +
1013 SAP_24GHZ_THIRD_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY;
1014 if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi))
1015 {
1016 pExtSpectCh->rssiAgr = rssi;
1017 }
1018 if (pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI)
1019 pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI;
1020 }
1021 pExtSpectCh = (pSpectCh - 2);
1022 if (pExtSpectCh != NULL)
1023 {
1024 ++pExtSpectCh->bssCount;
1025 rssi = pSpectCh->rssiAgr +
1026 SAP_24GHZ_SEC_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY;
1027 if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi))
1028 {
1029 pExtSpectCh->rssiAgr = rssi;
1030 }
1031 if (pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI)
1032 pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI;
1033 }
1034 pExtSpectCh = (pSpectCh - 1);
1035 if (pExtSpectCh != NULL)
1036 {
1037 ++pExtSpectCh->bssCount;
1038 rssi = pSpectCh->rssiAgr +
1039 SAP_24GHZ_FIRST_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY;
1040 if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi))
1041 {
1042 pExtSpectCh->rssiAgr = rssi;
1043 }
1044 if (pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI)
1045 pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI;
1046 }
1047 pExtSpectCh = (pSpectCh + 1);
1048 if (pExtSpectCh != NULL)
1049 {
1050 ++pExtSpectCh->bssCount;
1051 rssi = pSpectCh->rssiAgr +
1052 SAP_24GHZ_FIRST_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY;
1053 if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi))
1054 {
1055 pExtSpectCh->rssiAgr = rssi;
1056 }
1057 if (pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI)
1058 pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI;
1059 }
1060 pExtSpectCh = (pSpectCh + 2);
1061 if (pExtSpectCh != NULL)
1062 {
1063 ++pExtSpectCh->bssCount;
1064 rssi = pSpectCh->rssiAgr +
1065 SAP_24GHZ_SEC_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY;
1066 if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi))
1067 {
1068 pExtSpectCh->rssiAgr = rssi;
1069 }
1070 if (pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI)
1071 pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI;
1072 }
Venkata Prathyusha Kuntupallie2e72082013-01-30 17:37:50 -0800[diff] [blame]1073 break;
Madan Mohan Koyyalamudi8c8bb1e2013-08-26 23:13:07 +0530[diff] [blame^]1074
1075 case CHANNEL_10:
1076 pExtSpectCh = (pSpectCh - 4);
1077 if (pExtSpectCh != NULL)
1078 {
1079 ++pExtSpectCh->bssCount;
1080 rssi = pSpectCh->rssiAgr +
1081 SAP_24GHZ_FOURTH_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY;
1082 if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi))
1083 {
1084 pExtSpectCh->rssiAgr = rssi;
1085 }
1086 if (pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI)
1087 pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI;
1088 }
1089
1090 pExtSpectCh = (pSpectCh - 3);
1091 if (pExtSpectCh != NULL)
1092 {
1093 ++pExtSpectCh->bssCount;
1094 rssi = pSpectCh->rssiAgr +
1095 SAP_24GHZ_THIRD_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY;
1096 if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi))
1097 {
1098 pExtSpectCh->rssiAgr = rssi;
1099 }
1100 if (pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI)
1101 pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI;
1102 }
1103 pExtSpectCh = (pSpectCh - 2);
1104 if(pExtSpectCh != NULL)
1105 {
1106 ++pExtSpectCh->bssCount;
1107 rssi = pSpectCh->rssiAgr +
1108 SAP_24GHZ_SEC_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY;
1109 if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi))
1110 {
1111 pExtSpectCh->rssiAgr = rssi;
1112 }
1113 if (pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI)
1114 pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI;
1115 }
1116 pExtSpectCh = (pSpectCh - 1);
1117 if (pExtSpectCh != NULL)
1118 {
1119 ++pExtSpectCh->bssCount;
1120 rssi = pSpectCh->rssiAgr +
1121 SAP_24GHZ_FIRST_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY;
1122 if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi))
1123 {
1124 pExtSpectCh->rssiAgr = rssi;
1125 }
1126 if (pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI)
1127 pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI;
1128 }
1129 pExtSpectCh = (pSpectCh + 1);
1130 if (pExtSpectCh != NULL)
1131 {
1132 ++pExtSpectCh->bssCount;
1133 rssi = pSpectCh->rssiAgr +
1134 SAP_24GHZ_FIRST_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY;
1135 if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi))
1136 {
1137 pExtSpectCh->rssiAgr = rssi;
1138 }
1139 if (pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI)
1140 pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI;
1141 }
1142 break;
1143
1144 case CHANNEL_11:
1145 pExtSpectCh = (pSpectCh - 1);
1146 if (pExtSpectCh != NULL)
1147 {
1148 ++pExtSpectCh->bssCount;
1149 rssi = pSpectCh->rssiAgr +
1150 SAP_24GHZ_FIRST_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY;
1151 if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi))
1152 {
1153 pExtSpectCh->rssiAgr = rssi;
1154 }
1155 if (pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI)
1156 pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI;
1157 }
1158 pExtSpectCh = (pSpectCh - 2);
1159 if (pExtSpectCh != NULL)
1160 {
1161 ++pExtSpectCh->bssCount;
1162 rssi = pSpectCh->rssiAgr +
1163 SAP_24GHZ_SEC_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY;
1164 if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi))
1165 {
1166 pExtSpectCh->rssiAgr = rssi;
1167 }
1168 if (pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI)
1169 pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI;
1170 }
1171 pExtSpectCh = (pSpectCh - 3);
1172 if (pExtSpectCh != NULL)
1173 {
1174 ++pExtSpectCh->bssCount;
1175 rssi = pSpectCh->rssiAgr +
1176 SAP_24GHZ_THIRD_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY;
1177 if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi))
1178 {
1179 pExtSpectCh->rssiAgr = rssi;
1180 }
1181 if (pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI)
1182 pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI;
1183 }
1184 pExtSpectCh = (pSpectCh - 4);
1185 if (pExtSpectCh != NULL)
1186 {
1187 ++pExtSpectCh->bssCount;
1188 rssi = pSpectCh->rssiAgr +
1189 SAP_24GHZ_FOURTH_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY;
1190 if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi))
1191 {
1192 pExtSpectCh->rssiAgr = rssi;
1193 }
1194 if (pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI)
1195 pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI;
1196 }
1197 break;
1198
Venkata Prathyusha Kuntupallie2e72082013-01-30 17:37:50 -0800[diff] [blame]1199 default:
1200 break;
1201 }
1202}
1203
Jeff Johnson295189b2012-06-20 16:38:30 -0700[diff] [blame]1204/*==========================================================================
1205 FUNCTION sapComputeSpectWeight
1206
1207 DESCRIPTION
1208 Main function for computing the weight of each channel in the
1209 spectrum based on the RSSI value of the BSSes on the channel
1210 and number of BSS
1211
1212 DEPENDENCIES
1213 NA.
1214
1215 PARAMETERS
1216
1217 IN
1218 pSpectInfoParams : Pointer to the tSpectInfoParams structure
1219 halHandle : Pointer to HAL handle
1220 pResult : Pointer to tScanResultHandle
1221
1222 RETURN VALUE
1223 void : NULL
1224
1225 SIDE EFFECTS
1226============================================================================*/
Madan Mohan Koyyalamudi8c8bb1e2013-08-26 23:13:07 +0530[diff] [blame^]1227void sapComputeSpectWeight( tSapChSelSpectInfo* pSpectInfoParams,
1228 tHalHandle halHandle, tScanResultHandle pResult)
Jeff Johnson295189b2012-06-20 16:38:30 -0700[diff] [blame]1229{
1230 v_S7_t rssi = 0;
1231 v_U8_t chn_num = 0;
1232 v_U8_t channel_id = 0;
1233
1234 tCsrScanResultInfo *pScanResult;
1235 tSapSpectChInfo *pSpectCh = pSpectInfoParams->pSpectCh;
Madan Mohan Koyyalamudi527935a2012-12-04 16:41:16 -0800[diff] [blame]1236 v_U32_t operatingBand;
Prathyusha Kuntupalli7b8f6aa2012-12-10 13:17:35 -0800[diff] [blame]1237 v_U16_t channelWidth;
1238 v_U16_t secondaryChannelOffset;
1239 v_U16_t centerFreq;
1240 v_U16_t vhtSupport;
1241 v_U32_t ieLen = 0;
1242 tSirProbeRespBeacon *pBeaconStruct;
1243 tpAniSirGlobal pMac = (tpAniSirGlobal) halHandle;
Jeff Johnson295189b2012-06-20 16:38:30 -0700[diff] [blame]1244
Bansidhar Gopalachari0a96a382013-07-24 16:55:34 +0530[diff] [blame]1245 pBeaconStruct = vos_mem_malloc(sizeof(tSirProbeRespBeacon));
1246 if ( NULL == pBeaconStruct )
Prathyusha Kuntupalli7b8f6aa2012-12-10 13:17:35 -0800[diff] [blame]1247 {
Madan Mohan Koyyalamudi8c8bb1e2013-08-26 23:13:07 +0530[diff] [blame^]1248 VOS_TRACE(VOS_MODULE_ID_SAP, VOS_TRACE_LEVEL_INFO_HIGH,
1249 "Unable to allocate memory in sapComputeSpectWeight\n");
Prathyusha Kuntupalli7b8f6aa2012-12-10 13:17:35 -0800[diff] [blame]1250 return;
1251 }
Madan Mohan Koyyalamudi87054ba2012-11-02 13:24:12 -0700[diff] [blame]1252 VOS_TRACE( VOS_MODULE_ID_SAP, VOS_TRACE_LEVEL_INFO_HIGH, "In %s, Computing spectral weight", __func__);
Jeff Johnson295189b2012-06-20 16:38:30 -0700[diff] [blame]1253
1254 /**
1255 * Soft AP specific channel weight calculation using DFS formula
1256 */
Madan Mohan Koyyalamudi527935a2012-12-04 16:41:16 -0800[diff] [blame]1257 ccmCfgGetInt( halHandle, WNI_CFG_SAP_CHANNEL_SELECT_OPERATING_BAND, &operatingBand);
Jeff Johnson295189b2012-06-20 16:38:30 -0700[diff] [blame]1258
Madan Mohan Koyyalamudi8c8bb1e2013-08-26 23:13:07 +0530[diff] [blame^]1259 pScanResult = sme_ScanResultGetFirst(halHandle, pResult);
Jeff Johnson295189b2012-06-20 16:38:30 -0700[diff] [blame]1260
1261 while (pScanResult) {
1262 pSpectCh = pSpectInfoParams->pSpectCh;
Prathyusha Kuntupalli7b8f6aa2012-12-10 13:17:35 -0800[diff] [blame]1263 // Defining the default values, so that any value will hold the default values
1264 channelWidth = eHT_CHANNEL_WIDTH_20MHZ;
1265 secondaryChannelOffset = PHY_SINGLE_CHANNEL_CENTERED;
1266 vhtSupport = 0;
1267 centerFreq = 0;
Madan Mohan Koyyalamudi8c8bb1e2013-08-26 23:13:07 +0530[diff] [blame^]1268
1269 if (pScanResult->BssDescriptor.ieFields != NULL)
Prathyusha Kuntupalli7b8f6aa2012-12-10 13:17:35 -0800[diff] [blame]1270 {
1271 ieLen = (pScanResult->BssDescriptor.length + sizeof(tANI_U16) + sizeof(tANI_U32) - sizeof(tSirBssDescription));
Bansidhar Gopalachari0a96a382013-07-24 16:55:34 +0530[diff] [blame]1272 vos_mem_set((tANI_U8 *) pBeaconStruct, sizeof(tSirProbeRespBeacon), 0);
Madan Mohan Koyyalamudi8c8bb1e2013-08-26 23:13:07 +0530[diff] [blame^]1273
Prathyusha Kuntupalli7b8f6aa2012-12-10 13:17:35 -0800[diff] [blame]1274 if ((sirParseBeaconIE(pMac, pBeaconStruct,(tANI_U8 *)( pScanResult->BssDescriptor.ieFields), ieLen)) == eSIR_SUCCESS)
1275 {
Madan Mohan Koyyalamudi8c8bb1e2013-08-26 23:13:07 +0530[diff] [blame^]1276 if (pBeaconStruct->HTCaps.present && pBeaconStruct->HTInfo.present)
Prathyusha Kuntupalli7b8f6aa2012-12-10 13:17:35 -0800[diff] [blame]1277 {
1278 channelWidth = pBeaconStruct->HTCaps.supportedChannelWidthSet;
1279 secondaryChannelOffset = pBeaconStruct->HTInfo.secondaryChannelOffset;
1280 if(pBeaconStruct->VHTOperation.present)
1281 {
1282 vhtSupport = pBeaconStruct->VHTOperation.present;
1283 if(pBeaconStruct->VHTOperation.chanWidth > WNI_CFG_VHT_CHANNEL_WIDTH_20_40MHZ)
1284 {
1285 channelWidth = eHT_CHANNEL_WIDTH_80MHZ;
1286 centerFreq = pBeaconStruct->VHTOperation.chanCenterFreqSeg1;
1287 }
1288 }
1289 }
1290 }
1291 }
Madan Mohan Koyyalamudi1e02f7f2012-12-04 16:46:45 -0800[diff] [blame]1292 // Processing for each tCsrScanResultInfo in the tCsrScanResult DLink list
Jeff Johnson295189b2012-06-20 16:38:30 -0700[diff] [blame]1293 for (chn_num = 0; chn_num < pSpectInfoParams->numSpectChans; chn_num++) {
1294
1295 /*
1296 * if the Beacon has channel ID, use it other wise we will
1297 * rely on the channelIdSelf
1298 */
1299 if(pScanResult->BssDescriptor.channelId == 0)
1300 channel_id = pScanResult->BssDescriptor.channelIdSelf;
1301 else
1302 channel_id = pScanResult->BssDescriptor.channelId;
1303
Madan Mohan Koyyalamudi8c8bb1e2013-08-26 23:13:07 +0530[diff] [blame^]1304 if (channel_id == pSpectCh->chNum) {
Jeff Johnson295189b2012-06-20 16:38:30 -0700[diff] [blame]1305 if (pSpectCh->rssiAgr < pScanResult->BssDescriptor.rssi)
1306 pSpectCh->rssiAgr = pScanResult->BssDescriptor.rssi;
1307
1308 ++pSpectCh->bssCount; // Increment the count of BSS
1309
Madan Mohan Koyyalamudi527935a2012-12-04 16:41:16 -0800[diff] [blame]1310 if(operatingBand) // Connsidering the Extension Channel only in a channels
1311 {
1312 /* Updating the received ChannelWidth */
Madan Mohan Koyyalamudi8c8bb1e2013-08-26 23:13:07 +0530[diff] [blame^]1313 if (pSpectCh->channelWidth != channelWidth)
1314 pSpectCh->channelWidth = channelWidth;
Madan Mohan Koyyalamudi1e02f7f2012-12-04 16:46:45 -0800[diff] [blame]1315 /* If received ChannelWidth is other than HT20, we need to update the extension channel Params as well */
1316 /* channelWidth == 0, HT20 */
1317 /* channelWidth == 1, HT40 */
1318 /* channelWidth == 2, VHT80*/
Madan Mohan Koyyalamudi527935a2012-12-04 16:41:16 -0800[diff] [blame]1319 switch(pSpectCh->channelWidth)
1320 {
1321 case eHT_CHANNEL_WIDTH_40MHZ: //HT40
Prathyusha Kuntupalli7b8f6aa2012-12-10 13:17:35 -0800[diff] [blame]1322 switch( secondaryChannelOffset)
Madan Mohan Koyyalamudi527935a2012-12-04 16:41:16 -0800[diff] [blame]1323 {
1324 tSapSpectChInfo *pExtSpectCh = NULL;
1325 case PHY_DOUBLE_CHANNEL_LOW_PRIMARY: // Above the Primary Channel
1326 pExtSpectCh = (pSpectCh + 1);
1327 if(pExtSpectCh != NULL)
1328 {
1329 ++pExtSpectCh->bssCount;
Venkata Prathyusha Kuntupalli5c9e4e82013-04-15 13:10:09 -0700[diff] [blame]1330 rssi = pSpectCh->rssiAgr + SAP_SUBBAND1_RSSI_EFFECT_PRIMARY;
Madan Mohan Koyyalamudi527935a2012-12-04 16:41:16 -0800[diff] [blame]1331 // REducing the rssi by -20 and assigning it to Extension channel
Venkata Prathyusha Kuntupalli5c9e4e82013-04-15 13:10:09 -0700[diff] [blame]1332 if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi))
1333 {
1334 pExtSpectCh->rssiAgr = rssi;
1335 }
Madan Mohan Koyyalamudi527935a2012-12-04 16:41:16 -0800[diff] [blame]1336 if(pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI)
1337 pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI;
1338 }
1339 break;
Madan Mohan Koyyalamudi8c8bb1e2013-08-26 23:13:07 +0530[diff] [blame^]1340
Madan Mohan Koyyalamudi527935a2012-12-04 16:41:16 -0800[diff] [blame]1341 case PHY_DOUBLE_CHANNEL_HIGH_PRIMARY: // Below the Primary channel
1342 pExtSpectCh = (pSpectCh - 1);
1343 if(pExtSpectCh != NULL)
1344 {
Venkata Prathyusha Kuntupalli5c9e4e82013-04-15 13:10:09 -0700[diff] [blame]1345 rssi = pSpectCh->rssiAgr + SAP_SUBBAND1_RSSI_EFFECT_PRIMARY;
1346 if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi))
1347 {
1348 pExtSpectCh->rssiAgr = rssi;
1349 }
Madan Mohan Koyyalamudi527935a2012-12-04 16:41:16 -0800[diff] [blame]1350 if(pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI)
1351 pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI;
1352 ++pExtSpectCh->bssCount;
1353 }
1354 break;
1355 }
1356 break;
1357 case eHT_CHANNEL_WIDTH_80MHZ: // VHT80
Prathyusha Kuntupalli7b8f6aa2012-12-10 13:17:35 -0800[diff] [blame]1358 if((centerFreq - channel_id) == 6)
Madan Mohan Koyyalamudi527935a2012-12-04 16:41:16 -0800[diff] [blame]1359 {
1360 tSapSpectChInfo *pExtSpectCh = NULL;
1361 pExtSpectCh = (pSpectCh + 1);
1362 if(pExtSpectCh != NULL)
1363 {
1364 ++pExtSpectCh->bssCount;
Venkata Prathyusha Kuntupalli5c9e4e82013-04-15 13:10:09 -0700[diff] [blame]1365 rssi = pSpectCh->rssiAgr + SAP_SUBBAND1_RSSI_EFFECT_PRIMARY;
1366 if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi))
1367 {
1368 pExtSpectCh->rssiAgr = rssi; // Reducing the rssi by -20 and assigning it to Subband 1
1369 }
Madan Mohan Koyyalamudi527935a2012-12-04 16:41:16 -0800[diff] [blame]1370 if(pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI)
1371 pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI;
1372 }
1373 pExtSpectCh = (pSpectCh + 2);
1374 if(pExtSpectCh != NULL)
1375 {
1376 ++pExtSpectCh->bssCount;
Venkata Prathyusha Kuntupalli5c9e4e82013-04-15 13:10:09 -0700[diff] [blame]1377 rssi = pSpectCh->rssiAgr + SAP_SUBBAND2_RSSI_EFFECT_PRIMARY;
1378 if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi))
1379 {
1380 pExtSpectCh->rssiAgr = rssi; // Reducing the rssi by -30 and assigning it to Subband 2
1381 }
Madan Mohan Koyyalamudi527935a2012-12-04 16:41:16 -0800[diff] [blame]1382 if(pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI)
1383 pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI;
1384 }
1385 pExtSpectCh = (pSpectCh + 3);
1386 if(pExtSpectCh != NULL)
1387 {
1388 ++pExtSpectCh->bssCount;
Venkata Prathyusha Kuntupalli5c9e4e82013-04-15 13:10:09 -0700[diff] [blame]1389 rssi = pSpectCh->rssiAgr + SAP_SUBBAND3_RSSI_EFFECT_PRIMARY;
1390 if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi))
1391 {
1392 pExtSpectCh->rssiAgr = rssi; // Reducing the rssi by -40 and assigning it to Subband 3
1393 }
Madan Mohan Koyyalamudi527935a2012-12-04 16:41:16 -0800[diff] [blame]1394 if(pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI)
1395 pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI;
Madan Mohan Koyyalamudi8c8bb1e2013-08-26 23:13:07 +0530[diff] [blame^]1396 }
Madan Mohan Koyyalamudi527935a2012-12-04 16:41:16 -0800[diff] [blame]1397 }
Prathyusha Kuntupalli7b8f6aa2012-12-10 13:17:35 -0800[diff] [blame]1398 else if((centerFreq - channel_id) == 2)
Madan Mohan Koyyalamudi527935a2012-12-04 16:41:16 -0800[diff] [blame]1399 {
1400 tSapSpectChInfo *pExtSpectCh = NULL;
1401 pExtSpectCh = (pSpectCh - 1 );
1402 if(pExtSpectCh != NULL)
1403 {
1404 ++pExtSpectCh->bssCount;
Venkata Prathyusha Kuntupalli5c9e4e82013-04-15 13:10:09 -0700[diff] [blame]1405 rssi = pSpectCh->rssiAgr + SAP_SUBBAND1_RSSI_EFFECT_PRIMARY;
1406 if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi))
1407 {
1408 pExtSpectCh->rssiAgr = rssi;
1409 }
Madan Mohan Koyyalamudi527935a2012-12-04 16:41:16 -0800[diff] [blame]1410 if(pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI)
1411 pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI;
1412 }
1413 pExtSpectCh = (pSpectCh + 1);
1414 if(pExtSpectCh != NULL)
1415 {
1416 ++pExtSpectCh->bssCount;
Venkata Prathyusha Kuntupalli5c9e4e82013-04-15 13:10:09 -0700[diff] [blame]1417 rssi = pSpectCh->rssiAgr + SAP_SUBBAND1_RSSI_EFFECT_PRIMARY;
1418 if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi))
1419 {
1420 pExtSpectCh->rssiAgr = rssi;
1421 }
Madan Mohan Koyyalamudi527935a2012-12-04 16:41:16 -0800[diff] [blame]1422 if(pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI)
1423 pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI;
1424 }
1425 pExtSpectCh = (pSpectCh + 2);
1426 if(pExtSpectCh != NULL)
1427 {
1428 ++pExtSpectCh->bssCount;
Venkata Prathyusha Kuntupalli5c9e4e82013-04-15 13:10:09 -0700[diff] [blame]1429 rssi = pSpectCh->rssiAgr + SAP_SUBBAND2_RSSI_EFFECT_PRIMARY;
1430 if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi))
1431 {
1432 pExtSpectCh->rssiAgr = rssi;
1433 }
Madan Mohan Koyyalamudi527935a2012-12-04 16:41:16 -0800[diff] [blame]1434 if(pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI)
1435 pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI;
1436 }
1437 }
Prathyusha Kuntupalli7b8f6aa2012-12-10 13:17:35 -0800[diff] [blame]1438 else if((centerFreq - channel_id) == -2)
Madan Mohan Koyyalamudi527935a2012-12-04 16:41:16 -0800[diff] [blame]1439 {
1440 tSapSpectChInfo *pExtSpectCh = NULL;
1441 pExtSpectCh = (pSpectCh - 1 );
1442 if(pExtSpectCh != NULL)
1443 {
1444 ++pExtSpectCh->bssCount;
Venkata Prathyusha Kuntupalli5c9e4e82013-04-15 13:10:09 -0700[diff] [blame]1445 rssi = pSpectCh->rssiAgr + SAP_SUBBAND1_RSSI_EFFECT_PRIMARY;
1446 if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi))
1447 {
1448 pExtSpectCh->rssiAgr = rssi;
1449 }
Madan Mohan Koyyalamudi527935a2012-12-04 16:41:16 -0800[diff] [blame]1450 if(pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI)
1451 pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI;
1452 }
1453 pExtSpectCh = (pSpectCh - 2);
1454 if(pExtSpectCh != NULL)
1455 {
1456 ++pExtSpectCh->bssCount;
Venkata Prathyusha Kuntupalli5c9e4e82013-04-15 13:10:09 -0700[diff] [blame]1457 rssi = pSpectCh->rssiAgr + SAP_SUBBAND2_RSSI_EFFECT_PRIMARY;
1458 if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi))
1459 {
1460 pExtSpectCh->rssiAgr = rssi;
1461 }
Madan Mohan Koyyalamudi527935a2012-12-04 16:41:16 -0800[diff] [blame]1462 if(pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI)
1463 pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI;
1464 }
1465 pExtSpectCh = (pSpectCh + 1);
1466 if(pExtSpectCh != NULL)
1467 {
1468 ++pExtSpectCh->bssCount;
Venkata Prathyusha Kuntupalli5c9e4e82013-04-15 13:10:09 -0700[diff] [blame]1469 rssi = pSpectCh->rssiAgr + SAP_SUBBAND1_RSSI_EFFECT_PRIMARY;
1470 if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi))
1471 {
1472 pExtSpectCh->rssiAgr = rssi;
1473 }
Madan Mohan Koyyalamudi527935a2012-12-04 16:41:16 -0800[diff] [blame]1474 if(pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI)
1475 pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI;
1476 }
1477 }
Prathyusha Kuntupalli7b8f6aa2012-12-10 13:17:35 -0800[diff] [blame]1478 else if((centerFreq - channel_id) == -6)
Madan Mohan Koyyalamudi527935a2012-12-04 16:41:16 -0800[diff] [blame]1479 {
1480 tSapSpectChInfo *pExtSpectCh = NULL;
1481 pExtSpectCh = (pSpectCh - 1 );
1482 if(pExtSpectCh != NULL)
1483 {
1484 ++pExtSpectCh->bssCount;
Venkata Prathyusha Kuntupalli5c9e4e82013-04-15 13:10:09 -0700[diff] [blame]1485 rssi = pSpectCh->rssiAgr + SAP_SUBBAND1_RSSI_EFFECT_PRIMARY;
1486 if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi))
1487 {
1488 pExtSpectCh->rssiAgr = rssi;
1489 }
Madan Mohan Koyyalamudi527935a2012-12-04 16:41:16 -0800[diff] [blame]1490 if(pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI)
1491 pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI;
1492 }
1493 pExtSpectCh = (pSpectCh - 2);
1494 if(pExtSpectCh != NULL)
1495 {
1496 ++pExtSpectCh->bssCount;
Venkata Prathyusha Kuntupalli5c9e4e82013-04-15 13:10:09 -0700[diff] [blame]1497 rssi = pSpectCh->rssiAgr + SAP_SUBBAND2_RSSI_EFFECT_PRIMARY;
1498 if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi))
1499 {
1500 pExtSpectCh->rssiAgr = rssi;
1501 }
Madan Mohan Koyyalamudi527935a2012-12-04 16:41:16 -0800[diff] [blame]1502 if(pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI)
1503 pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI;
1504 }
1505 pExtSpectCh = (pSpectCh - 3);
1506 if(pExtSpectCh != NULL)
1507 {
1508 ++pExtSpectCh->bssCount;
Venkata Prathyusha Kuntupalli5c9e4e82013-04-15 13:10:09 -0700[diff] [blame]1509 rssi = pSpectCh->rssiAgr + SAP_SUBBAND3_RSSI_EFFECT_PRIMARY;
1510 if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi))
1511 {
1512 pExtSpectCh->rssiAgr = rssi;
1513 }
Madan Mohan Koyyalamudi527935a2012-12-04 16:41:16 -0800[diff] [blame]1514 if(pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI)
1515 pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI;
1516 }
1517 }
1518 break;
1519 }
Madan Mohan Koyyalamudi8c8bb1e2013-08-26 23:13:07 +0530[diff] [blame^]1520 }
Venkata Prathyusha Kuntupallie2e72082013-01-30 17:37:50 -0800[diff] [blame]1521 else if(operatingBand == RF_SUBBAND_2_4_GHZ)
1522 {
1523 sapInterferenceRssiCount(pSpectCh);
1524 }
Madan Mohan Koyyalamudi527935a2012-12-04 16:41:16 -0800[diff] [blame]1525
Jeff Johnson295189b2012-06-20 16:38:30 -0700[diff] [blame]1526 VOS_TRACE(VOS_MODULE_ID_SAP, VOS_TRACE_LEVEL_INFO_HIGH,
Gopichand Nakkala66c0bd02013-04-10 11:36:29 +0530[diff] [blame]1527 "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",
Prathyusha Kuntupalli7b8f6aa2012-12-10 13:17:35 -0800[diff] [blame]1528 __func__, pScanResult->BssDescriptor.channelIdSelf, pScanResult->BssDescriptor.channelId, pScanResult->BssDescriptor.rssi, pSpectCh->bssCount, pScanResult,pSpectCh->channelWidth,secondaryChannelOffset,centerFreq);
Jeff Johnson295189b2012-06-20 16:38:30 -0700[diff] [blame]1529 pSpectCh++;
1530 break;
1531 } else {
1532 pSpectCh++;
1533 }
1534 }
1535
1536 pScanResult = sme_ScanResultGetNext(halHandle, pResult);
1537 }
1538
1539 // Calculate the weights for all channels in the spectrum pSpectCh
1540 pSpectCh = pSpectInfoParams->pSpectCh;
1541
Madan Mohan Koyyalamudi87054ba2012-11-02 13:24:12 -0700[diff] [blame]1542 VOS_TRACE(VOS_MODULE_ID_SAP, VOS_TRACE_LEVEL_INFO_HIGH, "In %s, Spectrum Channels Weight", __func__);
Jeff Johnson295189b2012-06-20 16:38:30 -0700[diff] [blame]1543
1544 for (chn_num = 0; chn_num < (pSpectInfoParams->numSpectChans); chn_num++) {
Madan Mohan Koyyalamudi8c8bb1e2013-08-26 23:13:07 +0530[diff] [blame^]1545
Jeff Johnson295189b2012-06-20 16:38:30 -0700[diff] [blame]1546 /*
1547 rssi : Maximum received signal strength among all BSS on that channel
1548 bssCount : Number of BSS on that channel
1549 */
1550
1551 rssi = (v_S7_t)pSpectCh->rssiAgr;
1552
1553 pSpectCh->weight = SAPDFS_NORMALISE_1000 * sapweightRssiCount(rssi, pSpectCh->bssCount);
1554
Madan Mohan Koyyalamudi8c8bb1e2013-08-26 23:13:07 +0530[diff] [blame^]1555 //------ Debug Info ------
1556 VOS_TRACE(VOS_MODULE_ID_SAP, VOS_TRACE_LEVEL_INFO_HIGH,
1557 "In %s, Chan=%d Weight= %d rssiAgr=%d bssCount=%d", __func__,
1558 pSpectCh->chNum, pSpectCh->weight,
1559 pSpectCh->rssiAgr, pSpectCh->bssCount);
1560 //------ Debug Info ------
Jeff Johnson295189b2012-06-20 16:38:30 -0700[diff] [blame]1561 pSpectCh++;
1562 }
Bansidhar Gopalachari0a96a382013-07-24 16:55:34 +0530[diff] [blame]1563 vos_mem_free(pBeaconStruct);
Jeff Johnson295189b2012-06-20 16:38:30 -0700[diff] [blame]1564}
1565
1566/*==========================================================================
1567 FUNCTION sapChanSelExit
1568
1569 DESCRIPTION
1570 Exit function for free out the allocated memory, to be called
1571 at the end of the dfsSelectChannel function
1572
1573 DEPENDENCIES
1574 NA.
1575
1576 PARAMETERS
1577
1578 IN
1579 pSpectInfoParams : Pointer to the tSapChSelSpectInfo structure
1580
1581 RETURN VALUE
1582 void : NULL
1583
1584 SIDE EFFECTS
1585============================================================================*/
1586void sapChanSelExit( tSapChSelSpectInfo *pSpectInfoParams )
1587{
1588 // Free all the allocated memory
1589 vos_mem_free(pSpectInfoParams->pSpectCh);
1590}
1591
1592/*==========================================================================
1593 FUNCTION sapSortChlWeight
1594
1595 DESCRIPTION
1596 Funtion to sort the channels with the least weight first
1597
1598 DEPENDENCIES
1599 NA.
1600
1601 PARAMETERS
1602
1603 IN
1604 pSpectInfoParams : Pointer to the tSapChSelSpectInfo structure
1605
1606 RETURN VALUE
1607 void : NULL
1608
1609 SIDE EFFECTS
1610============================================================================*/
1611void sapSortChlWeight(tSapChSelSpectInfo *pSpectInfoParams)
1612{
1613 tSapSpectChInfo temp;
1614
1615 tSapSpectChInfo *pSpectCh = NULL;
1616 v_U32_t i = 0, j = 0, minWeightIndex = 0;
1617
1618 pSpectCh = pSpectInfoParams->pSpectCh;
1619#ifdef SOFTAP_CHANNEL_RANGE
1620 // Sorting the channels as per weights
1621 for (i = 0; i < pSpectInfoParams->numSpectChans; i++) {
1622 minWeightIndex = i;
1623 for( j = i + 1; j < pSpectInfoParams->numSpectChans; j++) {
1624 if(pSpectCh[j].weight < pSpectCh[minWeightIndex].weight) {
1625 minWeightIndex = j;
1626 }
1627 }
1628 if(minWeightIndex != i) {
1629 vos_mem_copy(&temp, &pSpectCh[minWeightIndex], sizeof(*pSpectCh));
1630 vos_mem_copy(&pSpectCh[minWeightIndex], &pSpectCh[i], sizeof(*pSpectCh));
1631 vos_mem_copy(&pSpectCh[i], &temp, sizeof(*pSpectCh));
1632 }
1633 }
1634#else
1635 // Sorting the channels as per weights
1636 for (i = 0; i < SPECT_24GHZ_CH_COUNT; i++) {
1637 minWeightIndex = i;
1638 for( j = i + 1; j < SPECT_24GHZ_CH_COUNT; j++) {
1639 if(pSpectCh[j].weight < pSpectCh[minWeightIndex].weight) {
1640 minWeightIndex = j;
1641 }
1642 }
1643 if(minWeightIndex != i) {
1644 vos_mem_copy(&temp, &pSpectCh[minWeightIndex], sizeof(*pSpectCh));
1645 vos_mem_copy(&pSpectCh[minWeightIndex], &pSpectCh[i], sizeof(*pSpectCh));
1646 vos_mem_copy(&pSpectCh[i], &temp, sizeof(*pSpectCh));
1647 }
1648 }
1649#endif
1650
1651 /* For testing */
Madan Mohan Koyyalamudi87054ba2012-11-02 13:24:12 -0700[diff] [blame]1652 VOS_TRACE(VOS_MODULE_ID_SAP, VOS_TRACE_LEVEL_INFO_HIGH, "In %s, Sorted Spectrum Channels Weight", __func__);
Jeff Johnson295189b2012-06-20 16:38:30 -0700[diff] [blame]1653 pSpectCh = pSpectInfoParams->pSpectCh;
1654 for (j = 0; j < (pSpectInfoParams->numSpectChans); j++) {
1655 VOS_TRACE(VOS_MODULE_ID_SAP, VOS_TRACE_LEVEL_INFO_HIGH, "In %s, Channel=%d Weight= %d rssi=%d bssCount=%d",
Madan Mohan Koyyalamudi87054ba2012-11-02 13:24:12 -0700[diff] [blame]1656 __func__, pSpectCh->chNum, pSpectCh->weight, pSpectCh->rssiAgr, pSpectCh->bssCount);
Jeff Johnson295189b2012-06-20 16:38:30 -0700[diff] [blame]1657 pSpectCh++;
1658 }
1659
1660}
1661
1662/*==========================================================================
1663 FUNCTION sapSelectChannel
1664
1665 DESCRIPTION
1666 Runs a algorithm to select the best channel to operate in based on BSS
1667 rssi and bss count on each channel
1668
1669 DEPENDENCIES
1670 NA.
1671
1672 PARAMETERS
1673
1674 IN
1675 halHandle : Pointer to HAL handle
1676 pResult : Pointer to tScanResultHandle
1677
1678 RETURN VALUE
1679 v_U8_t : Success - channel number, Fail - zero
1680
1681 SIDE EFFECTS
1682============================================================================*/
Madan Mohan Koyyalamudi5aef2af2012-10-05 11:56:27 -0700[diff] [blame]1683v_U8_t sapSelectChannel(tHalHandle halHandle, ptSapContext pSapCtx, tScanResultHandle pScanResult)
Jeff Johnson295189b2012-06-20 16:38:30 -0700[diff] [blame]1684{
1685 // DFS param object holding all the data req by the algo
1686 tSapChSelSpectInfo oSpectInfoParams = {NULL,0};
1687 tSapChSelSpectInfo *pSpectInfoParams = &oSpectInfoParams; // Memory? NB
Jeff Johnson295189b2012-06-20 16:38:30 -0700[diff] [blame]1688 v_U8_t bestChNum = 0;
1689#ifdef SOFTAP_CHANNEL_RANGE
1690 v_U32_t startChannelNum;
1691 v_U32_t endChannelNum;
Gopichand Nakkala936715f2013-03-18 19:48:10 +0530[diff] [blame]1692 v_U32_t operatingBand = 0;
Jeff Johnson295189b2012-06-20 16:38:30 -0700[diff] [blame]1693 v_U8_t count = 0;
1694#endif
Madan Mohan Koyyalamudi87054ba2012-11-02 13:24:12 -0700[diff] [blame]1695 VOS_TRACE(VOS_MODULE_ID_SAP, VOS_TRACE_LEVEL_INFO_HIGH, "In %s, Running SAP Ch Select", __func__);
Jeff Johnson295189b2012-06-20 16:38:30 -0700[diff] [blame]1696
1697 // Set to zero tSapChSelParams
1698 //vos_mem_zero(&sapChSelParams, sizeof(sapChSelParams));
1699
1700 // Initialize the structure pointed by pSpectInfoParams
1701 if(sapChanSelInit( halHandle, pSpectInfoParams) != eSAP_TRUE ) {
Madan Mohan Koyyalamudi87054ba2012-11-02 13:24:12 -0700[diff] [blame]1702 VOS_TRACE(VOS_MODULE_ID_SAP, VOS_TRACE_LEVEL_ERROR, "In %s, Ch Select initialization failed", __func__);
Jeff Johnson295189b2012-06-20 16:38:30 -0700[diff] [blame]1703 return SAP_CHANNEL_NOT_SELECTED;
1704 }
1705
1706 // Compute the weight of the entire spectrum in the operating band
1707 sapComputeSpectWeight( pSpectInfoParams, halHandle, pScanResult);
1708
1709 // Sort the 20M channel list as per the computed weights, lesser weight first.
1710 sapSortChlWeight(pSpectInfoParams);
1711
1712#ifdef SOFTAP_CHANNEL_RANGE
1713 ccmCfgGetInt( halHandle, WNI_CFG_SAP_CHANNEL_SELECT_START_CHANNEL, &startChannelNum);
1714 ccmCfgGetInt( halHandle, WNI_CFG_SAP_CHANNEL_SELECT_END_CHANNEL, &endChannelNum);
1715 ccmCfgGetInt( halHandle, WNI_CFG_SAP_CHANNEL_SELECT_OPERATING_BAND, &operatingBand);
1716
1717 /*Loop till get the best channel in the given range */
1718 for(count=0; count < pSpectInfoParams->numSpectChans ; count++)
1719 {
1720 if((startChannelNum <= pSpectInfoParams->pSpectCh[count].chNum)&&
1721 ( endChannelNum >= pSpectInfoParams->pSpectCh[count].chNum))
1722 {
Bansidhar Gopalachari1e56faa2013-07-25 19:30:20 +0530[diff] [blame]1723 if(bestChNum == 0)
1724 {
1725 bestChNum = (v_U8_t)pSpectInfoParams->pSpectCh[count].chNum;
1726 }
1727 else
1728 {
1729 if(operatingBand == RF_SUBBAND_2_4_GHZ)
1730 {
1731 /* Give preference to Non-overlap channels */
1732 if(((pSpectInfoParams->pSpectCh[count].chNum == CHANNEL_1) ||
1733 (pSpectInfoParams->pSpectCh[count].chNum == CHANNEL_6) ||
1734 (pSpectInfoParams->pSpectCh[count].chNum == CHANNEL_11))&&
1735 (pSpectInfoParams->pSpectCh[count].weight == 0))
1736 {
1737 bestChNum = (v_U8_t)pSpectInfoParams->pSpectCh[count].chNum;
1738 break;
1739 }
1740 }
1741 }
1742 }
1743 }
Jeff Johnson295189b2012-06-20 16:38:30 -0700[diff] [blame]1744#else
1745 // Get the first channel in sorted array as best 20M Channel
1746 bestChNum = (v_U8_t)pSpectInfoParams->pSpectCh[0].chNum;
Jeff Johnson295189b2012-06-20 16:38:30 -0700[diff] [blame]1747#endif
Venkata Prathyusha Kuntupalli5c9e4e82013-04-15 13:10:09 -0700[diff] [blame]1748
Madan Mohan Koyyalamudi5aef2af2012-10-05 11:56:27 -0700[diff] [blame]1749 //Select Best Channel from Channel List if Configured
Madan Mohan Koyyalamudi1bed5982012-10-22 14:38:06 -0700[diff] [blame]1750 bestChNum = sapSelectPreferredChannelFromChannelList(bestChNum, pSapCtx, pSpectInfoParams);
Jeff Johnson295189b2012-06-20 16:38:30 -0700[diff] [blame]1751
1752 // Free all the allocated memory
1753 sapChanSelExit(pSpectInfoParams);
1754
1755 VOS_TRACE(VOS_MODULE_ID_SAP, VOS_TRACE_LEVEL_INFO_HIGH, "In %s, Running SAP Ch select Completed, Ch=%d",
Venkata Prathyusha Kuntupalli5c9e4e82013-04-15 13:10:09 -0700[diff] [blame]1756 __func__, bestChNum);
Jeff Johnson295189b2012-06-20 16:38:30 -0700[diff] [blame]1757 if (bestChNum > 0 && bestChNum <= 252)
1758 return bestChNum;
1759 else
1760 return SAP_CHANNEL_NOT_SELECTED;
1761}
Venkata Prathyusha Kuntupalli5c9e4e82013-04-15 13:10:09 -0700[diff] [blame]1762