Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 1 | /* |
Jeff Johnson | 32d95a3 | 2012-09-10 13:15:23 -0700 | [diff] [blame] | 2 | * Copyright (c) 2012, The Linux Foundation. All rights reserved. |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [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 | ------------------------------------------------------------------------- * |
| 24 | \file csrLinkList.c |
| 25 | |
| 26 | Implementation for the Common link list interfaces. |
| 27 | |
| 28 | |
| 29 | Copyright (C) 2006 Airgo Networks, Incorporated |
| 30 | ========================================================================== */ |
| 31 | |
| 32 | #include "palApi.h" |
| 33 | #include "csrLinkList.h" |
| 34 | #include "vos_lock.h" |
| 35 | #include "vos_memory.h" |
| 36 | #include "vos_trace.h" |
| 37 | |
| 38 | ANI_INLINE_FUNCTION void csrListInit(tListElem *pList) |
| 39 | { |
| 40 | pList->last = pList->next = pList; |
| 41 | } |
| 42 | |
| 43 | |
| 44 | ANI_INLINE_FUNCTION void csrListRemoveEntry(tListElem *pEntry) |
| 45 | { |
| 46 | tListElem *pLast; |
| 47 | tListElem *pNext; |
| 48 | |
| 49 | pLast = pEntry->last; |
| 50 | pNext = pEntry->next; |
| 51 | pLast->next = pNext; |
| 52 | pNext->last = pLast; |
| 53 | } |
| 54 | |
| 55 | |
| 56 | ANI_INLINE_FUNCTION tListElem * csrListRemoveHead(tListElem *pHead) |
| 57 | { |
| 58 | tListElem *pEntry; |
| 59 | tListElem *pNext; |
| 60 | |
| 61 | pEntry = pHead->next; |
| 62 | pNext = pEntry->next; |
| 63 | pHead->next = pNext; |
| 64 | pNext->last = pHead; |
| 65 | |
| 66 | return (pEntry); |
| 67 | } |
| 68 | |
| 69 | |
| 70 | |
| 71 | ANI_INLINE_FUNCTION tListElem * csrListRemoveTail(tListElem *pHead) |
| 72 | { |
| 73 | tListElem *pEntry; |
| 74 | tListElem *pLast; |
| 75 | |
| 76 | pEntry = pHead->last; |
| 77 | pLast = pEntry->last; |
| 78 | pHead->last = pLast; |
| 79 | pLast->next = pHead; |
| 80 | |
| 81 | return (pEntry); |
| 82 | } |
| 83 | |
| 84 | |
| 85 | ANI_INLINE_FUNCTION void csrListInsertTail(tListElem *pHead, tListElem *pEntry) |
| 86 | { |
| 87 | tListElem *pLast; |
| 88 | |
| 89 | pLast = pHead->last; |
| 90 | pEntry->last = pLast; |
| 91 | pEntry->next = pHead; |
| 92 | pLast->next = pEntry; |
| 93 | pHead->last = pEntry; |
| 94 | } |
| 95 | |
| 96 | |
| 97 | ANI_INLINE_FUNCTION void csrListInsertHead(tListElem *pHead, tListElem *pEntry) |
| 98 | { |
| 99 | tListElem *pNext; |
| 100 | |
| 101 | pNext = pHead->next; |
| 102 | pEntry->next = pNext; |
| 103 | pEntry->last = pHead; |
| 104 | pNext->last = pEntry; |
| 105 | pHead->next = pEntry; |
| 106 | } |
| 107 | |
| 108 | |
| 109 | //Insert pNewEntry before pEntry |
| 110 | void csrListInsertEntry(tListElem *pEntry, tListElem *pNewEntry) |
| 111 | { |
| 112 | tListElem *pLast; |
| 113 | if( !pEntry) |
| 114 | { |
Madan Mohan Koyyalamudi | 87054ba | 2012-11-02 13:24:12 -0700 | [diff] [blame^] | 115 | VOS_TRACE(VOS_MODULE_ID_SME, VOS_TRACE_LEVEL_FATAL,"%s: Error!! pEntry is Null", __func__); |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 116 | return; |
| 117 | } |
| 118 | |
| 119 | pLast = pEntry->last; |
| 120 | pLast->next = pNewEntry; |
| 121 | pEntry->last = pNewEntry; |
| 122 | pNewEntry->next = pEntry; |
| 123 | pNewEntry->last = pLast; |
| 124 | } |
| 125 | |
| 126 | tANI_U32 csrLLCount( tDblLinkList *pList ) |
| 127 | { |
| 128 | tANI_U32 c = 0; |
| 129 | |
| 130 | |
| 131 | if( !pList) |
| 132 | { |
Madan Mohan Koyyalamudi | 87054ba | 2012-11-02 13:24:12 -0700 | [diff] [blame^] | 133 | VOS_TRACE(VOS_MODULE_ID_SME, VOS_TRACE_LEVEL_FATAL,"%s: Error!! pList is Null", __func__); |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 134 | return c; |
| 135 | } |
| 136 | |
| 137 | if ( pList && ( LIST_FLAG_OPEN == pList->Flag ) ) |
| 138 | { |
| 139 | c = pList->Count; |
| 140 | } |
| 141 | |
| 142 | return( c ); |
| 143 | } |
| 144 | |
| 145 | |
| 146 | void csrLLLock( tDblLinkList *pList ) |
| 147 | { |
| 148 | |
| 149 | |
| 150 | if( !pList) |
| 151 | { |
Madan Mohan Koyyalamudi | 87054ba | 2012-11-02 13:24:12 -0700 | [diff] [blame^] | 152 | VOS_TRACE(VOS_MODULE_ID_SME, VOS_TRACE_LEVEL_FATAL,"%s: Error!! pList is Null", __func__); |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 153 | return ; |
| 154 | } |
| 155 | |
| 156 | if ( LIST_FLAG_OPEN == pList->Flag ) |
| 157 | { |
| 158 | vos_lock_acquire(&pList->Lock); |
| 159 | } |
| 160 | } |
| 161 | |
| 162 | |
| 163 | void csrLLUnlock( tDblLinkList *pList ) |
| 164 | { |
| 165 | |
| 166 | if( !pList) |
| 167 | { |
Madan Mohan Koyyalamudi | 87054ba | 2012-11-02 13:24:12 -0700 | [diff] [blame^] | 168 | VOS_TRACE(VOS_MODULE_ID_SME, VOS_TRACE_LEVEL_FATAL,"%s: Error!! pList is Null", __func__); |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 169 | return ; |
| 170 | } |
| 171 | |
| 172 | if ( LIST_FLAG_OPEN == pList->Flag ) |
| 173 | { |
| 174 | vos_lock_release(&pList->Lock); |
| 175 | } |
| 176 | } |
| 177 | |
| 178 | |
| 179 | tANI_BOOLEAN csrLLIsListEmpty( tDblLinkList *pList, tANI_BOOLEAN fInterlocked ) |
| 180 | { |
| 181 | tANI_BOOLEAN fEmpty = eANI_BOOLEAN_TRUE; |
| 182 | |
| 183 | |
| 184 | if( !pList) |
| 185 | { |
Madan Mohan Koyyalamudi | 87054ba | 2012-11-02 13:24:12 -0700 | [diff] [blame^] | 186 | VOS_TRACE(VOS_MODULE_ID_SME, VOS_TRACE_LEVEL_FATAL,"%s: Error!! pList is Null", __func__); |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 187 | return fEmpty ; |
| 188 | } |
| 189 | |
| 190 | if ( LIST_FLAG_OPEN == pList->Flag ) |
| 191 | { |
| 192 | if(fInterlocked) |
| 193 | { |
| 194 | csrLLLock(pList); |
| 195 | } |
| 196 | |
| 197 | fEmpty = csrIsListEmpty( &pList->ListHead ); |
| 198 | |
| 199 | if(fInterlocked) |
| 200 | { |
| 201 | csrLLUnlock(pList); |
| 202 | } |
| 203 | } |
| 204 | return( fEmpty ); |
| 205 | } |
| 206 | |
| 207 | |
| 208 | |
| 209 | tANI_BOOLEAN csrLLFindEntry( tDblLinkList *pList, tListElem *pEntryToFind ) |
| 210 | { |
| 211 | tANI_BOOLEAN fFound = eANI_BOOLEAN_FALSE; |
| 212 | tListElem *pEntry; |
| 213 | |
| 214 | |
| 215 | if( !pList) |
| 216 | { |
Madan Mohan Koyyalamudi | 87054ba | 2012-11-02 13:24:12 -0700 | [diff] [blame^] | 217 | VOS_TRACE(VOS_MODULE_ID_SME, VOS_TRACE_LEVEL_FATAL,"%s: Error!! pList is Null", __func__); |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 218 | return fFound ; |
| 219 | } |
| 220 | |
| 221 | if ( LIST_FLAG_OPEN == pList->Flag ) |
| 222 | { |
| 223 | pEntry = csrLLPeekHead( pList, LL_ACCESS_NOLOCK); |
| 224 | |
| 225 | // Have to make sure we don't loop back to the head of the list, which will |
| 226 | // happen if the entry is NOT on the list... |
| 227 | |
| 228 | while( pEntry && ( pEntry != &pList->ListHead ) ) |
| 229 | { |
| 230 | if ( pEntry == pEntryToFind ) |
| 231 | { |
| 232 | fFound = eANI_BOOLEAN_TRUE; |
| 233 | break; |
| 234 | } |
| 235 | pEntry = pEntry->next; |
| 236 | } |
| 237 | |
| 238 | } |
| 239 | return( fFound ); |
| 240 | } |
| 241 | |
| 242 | |
| 243 | eHalStatus csrLLOpen( tHddHandle hHdd, tDblLinkList *pList ) |
| 244 | { |
| 245 | eHalStatus status = eHAL_STATUS_SUCCESS; |
| 246 | VOS_STATUS vosStatus; |
| 247 | |
| 248 | if( !pList) |
| 249 | { |
Madan Mohan Koyyalamudi | 87054ba | 2012-11-02 13:24:12 -0700 | [diff] [blame^] | 250 | VOS_TRACE(VOS_MODULE_ID_SME, VOS_TRACE_LEVEL_FATAL,"%s: Error!! pList is Null", __func__); |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 251 | return eHAL_STATUS_FAILURE ; |
| 252 | } |
| 253 | |
| 254 | if ( LIST_FLAG_OPEN != pList->Flag ) |
| 255 | { |
| 256 | pList->Count = 0; |
| 257 | |
| 258 | vosStatus = vos_lock_init(&pList->Lock); |
| 259 | |
| 260 | if(VOS_IS_STATUS_SUCCESS(vosStatus)) |
| 261 | { |
| 262 | csrListInit( &pList->ListHead ); |
| 263 | pList->Flag = LIST_FLAG_OPEN; |
| 264 | pList->hHdd = hHdd; |
| 265 | } |
| 266 | else |
| 267 | { |
| 268 | status = eHAL_STATUS_FAILURE; |
| 269 | } |
| 270 | } |
| 271 | return (status); |
| 272 | } |
| 273 | |
| 274 | void csrLLClose( tDblLinkList *pList ) |
| 275 | { |
| 276 | if( !pList) |
| 277 | { |
Madan Mohan Koyyalamudi | 87054ba | 2012-11-02 13:24:12 -0700 | [diff] [blame^] | 278 | VOS_TRACE(VOS_MODULE_ID_SME, VOS_TRACE_LEVEL_FATAL,"%s: Error!! pList is Null", __func__); |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 279 | return ; |
| 280 | } |
| 281 | |
| 282 | if ( LIST_FLAG_OPEN == pList->Flag ) |
| 283 | { |
| 284 | // Make sure the list is empty... |
| 285 | csrLLPurge( pList, LL_ACCESS_LOCK ); |
| 286 | vos_lock_destroy( &pList->Lock ); |
| 287 | pList->Flag = LIST_FLAG_CLOSE; |
| 288 | } |
| 289 | } |
| 290 | |
| 291 | void csrLLInsertTail( tDblLinkList *pList, tListElem *pEntry, tANI_BOOLEAN fInterlocked ) |
| 292 | { |
| 293 | if( !pList) |
| 294 | { |
Madan Mohan Koyyalamudi | 87054ba | 2012-11-02 13:24:12 -0700 | [diff] [blame^] | 295 | VOS_TRACE(VOS_MODULE_ID_SME, VOS_TRACE_LEVEL_FATAL,"%s: Error!! pList is Null", __func__); |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 296 | return; |
| 297 | } |
| 298 | |
| 299 | if ( LIST_FLAG_OPEN == pList->Flag ) |
| 300 | { |
| 301 | if(fInterlocked) |
| 302 | { |
| 303 | csrLLLock(pList); |
| 304 | } |
| 305 | csrListInsertTail( &pList->ListHead, pEntry ); |
| 306 | pList->Count++; |
| 307 | if(fInterlocked) |
| 308 | { |
| 309 | csrLLUnlock(pList); |
| 310 | } |
| 311 | } |
| 312 | } |
| 313 | |
| 314 | |
| 315 | |
| 316 | void csrLLInsertHead( tDblLinkList *pList, tListElem *pEntry, tANI_BOOLEAN fInterlocked ) |
| 317 | { |
| 318 | |
| 319 | if( !pList) |
| 320 | { |
Madan Mohan Koyyalamudi | 87054ba | 2012-11-02 13:24:12 -0700 | [diff] [blame^] | 321 | VOS_TRACE(VOS_MODULE_ID_SME, VOS_TRACE_LEVEL_FATAL,"%s: Error!! pList is Null", __func__); |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 322 | return; |
| 323 | } |
| 324 | |
| 325 | if ( LIST_FLAG_OPEN == pList->Flag ) |
| 326 | { |
| 327 | if(fInterlocked) |
| 328 | { |
| 329 | csrLLLock(pList); |
| 330 | } |
| 331 | csrListInsertHead( &pList->ListHead, pEntry ); |
| 332 | pList->Count++; |
| 333 | if(fInterlocked) |
| 334 | { |
| 335 | csrLLUnlock(pList); |
| 336 | } |
| 337 | } |
| 338 | } |
| 339 | |
| 340 | |
| 341 | void csrLLInsertEntry( tDblLinkList *pList, tListElem *pEntry, tListElem *pNewEntry, tANI_BOOLEAN fInterlocked ) |
| 342 | { |
| 343 | if( !pList) |
| 344 | { |
Madan Mohan Koyyalamudi | 87054ba | 2012-11-02 13:24:12 -0700 | [diff] [blame^] | 345 | VOS_TRACE(VOS_MODULE_ID_SME, VOS_TRACE_LEVEL_FATAL,"%s: Error!! pList is Null", __func__); |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 346 | return ; |
| 347 | } |
| 348 | |
| 349 | if ( LIST_FLAG_OPEN == pList->Flag ) |
| 350 | { |
| 351 | if(fInterlocked) |
| 352 | { |
| 353 | csrLLLock(pList); |
| 354 | } |
| 355 | csrListInsertEntry( pEntry, pNewEntry ); |
| 356 | pList->Count++; |
| 357 | if(fInterlocked) |
| 358 | { |
| 359 | csrLLUnlock(pList); |
| 360 | } |
| 361 | } |
| 362 | } |
| 363 | |
| 364 | |
| 365 | |
| 366 | tListElem *csrLLRemoveTail( tDblLinkList *pList, tANI_BOOLEAN fInterlocked ) |
| 367 | { |
| 368 | tListElem *pEntry = NULL; |
| 369 | |
| 370 | if( !pList) |
| 371 | { |
Madan Mohan Koyyalamudi | 87054ba | 2012-11-02 13:24:12 -0700 | [diff] [blame^] | 372 | VOS_TRACE(VOS_MODULE_ID_SME, VOS_TRACE_LEVEL_FATAL,"%s: Error!! pList is Null", __func__); |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 373 | return pEntry ; |
| 374 | } |
| 375 | |
| 376 | if ( LIST_FLAG_OPEN == pList->Flag ) |
| 377 | { |
| 378 | if ( fInterlocked ) |
| 379 | { |
| 380 | csrLLLock( pList ); |
| 381 | } |
| 382 | |
| 383 | if ( !csrIsListEmpty(&pList->ListHead) ) |
| 384 | { |
| 385 | |
| 386 | pEntry = csrListRemoveTail( &pList->ListHead ); |
| 387 | pList->Count--; |
| 388 | } |
| 389 | if ( fInterlocked ) |
| 390 | { |
| 391 | csrLLUnlock( pList ); |
| 392 | } |
| 393 | } |
| 394 | |
| 395 | return( pEntry ); |
| 396 | } |
| 397 | |
| 398 | |
| 399 | tListElem *csrLLPeekTail( tDblLinkList *pList, tANI_BOOLEAN fInterlocked ) |
| 400 | { |
| 401 | tListElem *pEntry = NULL; |
| 402 | |
| 403 | |
| 404 | if( !pList) |
| 405 | { |
Madan Mohan Koyyalamudi | 87054ba | 2012-11-02 13:24:12 -0700 | [diff] [blame^] | 406 | VOS_TRACE(VOS_MODULE_ID_SME, VOS_TRACE_LEVEL_FATAL,"%s: Error!! pList is Null", __func__); |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 407 | return pEntry ; |
| 408 | } |
| 409 | |
| 410 | if ( LIST_FLAG_OPEN == pList->Flag ) |
| 411 | { |
| 412 | if ( fInterlocked ) |
| 413 | { |
| 414 | csrLLLock( pList ); |
| 415 | } |
| 416 | |
| 417 | if ( !csrIsListEmpty(&pList->ListHead) ) |
| 418 | { |
| 419 | pEntry = pList->ListHead.last; |
| 420 | } |
| 421 | if ( fInterlocked ) |
| 422 | { |
| 423 | csrLLUnlock( pList ); |
| 424 | } |
| 425 | } |
| 426 | |
| 427 | return( pEntry ); |
| 428 | } |
| 429 | |
| 430 | |
| 431 | |
| 432 | tListElem *csrLLRemoveHead( tDblLinkList *pList, tANI_BOOLEAN fInterlocked ) |
| 433 | { |
| 434 | tListElem *pEntry = NULL; |
| 435 | |
| 436 | |
| 437 | if( !pList) |
| 438 | { |
Madan Mohan Koyyalamudi | 87054ba | 2012-11-02 13:24:12 -0700 | [diff] [blame^] | 439 | VOS_TRACE(VOS_MODULE_ID_SME, VOS_TRACE_LEVEL_FATAL,"%s: Error!! pList is Null", __func__); |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 440 | return pEntry ; |
| 441 | } |
| 442 | |
| 443 | if ( LIST_FLAG_OPEN == pList->Flag ) |
| 444 | { |
| 445 | if ( fInterlocked ) |
| 446 | { |
| 447 | csrLLLock( pList ); |
| 448 | } |
| 449 | |
| 450 | if ( !csrIsListEmpty(&pList->ListHead) ) |
| 451 | { |
| 452 | pEntry = csrListRemoveHead( &pList->ListHead ); |
| 453 | pList->Count--; |
| 454 | } |
| 455 | |
| 456 | if ( fInterlocked ) |
| 457 | { |
| 458 | csrLLUnlock( pList ); |
| 459 | } |
| 460 | } |
| 461 | |
| 462 | return( pEntry ); |
| 463 | } |
| 464 | |
| 465 | |
| 466 | tListElem *csrLLPeekHead( tDblLinkList *pList, tANI_BOOLEAN fInterlocked ) |
| 467 | { |
| 468 | tListElem *pEntry = NULL; |
| 469 | |
| 470 | if( !pList) |
| 471 | { |
Madan Mohan Koyyalamudi | 87054ba | 2012-11-02 13:24:12 -0700 | [diff] [blame^] | 472 | VOS_TRACE(VOS_MODULE_ID_SME, VOS_TRACE_LEVEL_FATAL,"%s: Error!! pList is Null", __func__); |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 473 | return pEntry ; |
| 474 | } |
| 475 | |
| 476 | if ( LIST_FLAG_OPEN == pList->Flag ) |
| 477 | { |
| 478 | if ( fInterlocked ) |
| 479 | { |
| 480 | csrLLLock( pList ); |
| 481 | } |
| 482 | |
| 483 | if ( !csrIsListEmpty(&pList->ListHead) ) |
| 484 | { |
| 485 | pEntry = pList->ListHead.next; |
| 486 | } |
| 487 | if ( fInterlocked ) |
| 488 | { |
| 489 | csrLLUnlock( pList ); |
| 490 | } |
| 491 | } |
| 492 | |
| 493 | return( pEntry ); |
| 494 | } |
| 495 | |
| 496 | |
| 497 | |
| 498 | void csrLLPurge( tDblLinkList *pList, tANI_BOOLEAN fInterlocked ) |
| 499 | { |
| 500 | tListElem *pEntry; |
| 501 | |
| 502 | if( !pList) |
| 503 | { |
Madan Mohan Koyyalamudi | 87054ba | 2012-11-02 13:24:12 -0700 | [diff] [blame^] | 504 | VOS_TRACE(VOS_MODULE_ID_SME, VOS_TRACE_LEVEL_FATAL,"%s: Error!! pList is Null", __func__); |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 505 | return ; |
| 506 | } |
| 507 | |
| 508 | if ( LIST_FLAG_OPEN == pList->Flag ) |
| 509 | { |
| 510 | if ( fInterlocked ) |
| 511 | { |
| 512 | csrLLLock( pList ); |
| 513 | } |
| 514 | while( (pEntry = csrLLRemoveHead( pList, LL_ACCESS_NOLOCK )) ) |
| 515 | { |
| 516 | // just remove everything from the list until |
| 517 | // nothing left on the list. |
| 518 | } |
| 519 | if ( fInterlocked ) |
| 520 | { |
| 521 | csrLLUnlock( pList ); |
| 522 | } |
| 523 | } |
| 524 | } |
| 525 | |
| 526 | |
| 527 | tANI_BOOLEAN csrLLRemoveEntry( tDblLinkList *pList, tListElem *pEntryToRemove, tANI_BOOLEAN fInterlocked ) |
| 528 | { |
| 529 | tANI_BOOLEAN fFound = eANI_BOOLEAN_FALSE; |
| 530 | tListElem *pEntry; |
| 531 | |
| 532 | if( !pList) |
| 533 | { |
Madan Mohan Koyyalamudi | 87054ba | 2012-11-02 13:24:12 -0700 | [diff] [blame^] | 534 | VOS_TRACE(VOS_MODULE_ID_SME, VOS_TRACE_LEVEL_FATAL,"%s: Error!! pList is Null", __func__); |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 535 | return fFound; |
| 536 | } |
| 537 | |
| 538 | if ( LIST_FLAG_OPEN == pList->Flag ) |
| 539 | { |
| 540 | if ( fInterlocked ) |
| 541 | { |
| 542 | csrLLLock( pList ); |
| 543 | } |
| 544 | |
| 545 | pEntry = csrLLPeekHead( pList, LL_ACCESS_NOLOCK ); |
| 546 | |
| 547 | // Have to make sure we don't loop back to the head of the list, which will |
| 548 | // happen if the entry is NOT on the list... |
| 549 | while( pEntry && ( pEntry != &pList->ListHead ) ) |
| 550 | { |
| 551 | if ( pEntry == pEntryToRemove ) |
| 552 | { |
| 553 | csrListRemoveEntry( pEntry ); |
| 554 | pList->Count--; |
| 555 | |
| 556 | fFound = eANI_BOOLEAN_TRUE; |
| 557 | break; |
| 558 | } |
| 559 | |
| 560 | pEntry = pEntry->next; |
| 561 | } |
| 562 | if ( fInterlocked ) |
| 563 | { |
| 564 | csrLLUnlock( pList ); |
| 565 | } |
| 566 | } |
| 567 | |
| 568 | return( fFound ); |
| 569 | } |
| 570 | |
| 571 | |
| 572 | |
| 573 | tListElem *csrLLNext( tDblLinkList *pList, tListElem *pEntry, tANI_BOOLEAN fInterlocked ) |
| 574 | { |
| 575 | tListElem *pNextEntry = NULL; |
| 576 | |
| 577 | if( !pList) |
| 578 | { |
Madan Mohan Koyyalamudi | 87054ba | 2012-11-02 13:24:12 -0700 | [diff] [blame^] | 579 | VOS_TRACE(VOS_MODULE_ID_SME, VOS_TRACE_LEVEL_FATAL,"%s: Error!! pList is Null", __func__); |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 580 | return pNextEntry ; |
| 581 | } |
| 582 | |
| 583 | if ( LIST_FLAG_OPEN == pList->Flag ) |
| 584 | { |
| 585 | if ( fInterlocked ) |
| 586 | { |
| 587 | csrLLLock( pList ); |
| 588 | } |
| 589 | |
| 590 | if ( !csrIsListEmpty(&pList->ListHead) && csrLLFindEntry( pList, pEntry ) ) |
| 591 | { |
| 592 | pNextEntry = pEntry->next; |
| 593 | //Make sure we don't walk past the head |
| 594 | if ( pNextEntry == &pList->ListHead ) |
| 595 | { |
| 596 | pNextEntry = NULL; |
| 597 | } |
| 598 | } |
| 599 | |
| 600 | if ( fInterlocked ) |
| 601 | { |
| 602 | csrLLUnlock( pList ); |
| 603 | } |
| 604 | } |
| 605 | |
| 606 | return( pNextEntry ); |
| 607 | } |
| 608 | |
| 609 | |
| 610 | tListElem *csrLLPrevious( tDblLinkList *pList, tListElem *pEntry, tANI_BOOLEAN fInterlocked ) |
| 611 | { |
| 612 | tListElem *pNextEntry = NULL; |
| 613 | |
| 614 | if( !pList) |
| 615 | { |
Madan Mohan Koyyalamudi | 87054ba | 2012-11-02 13:24:12 -0700 | [diff] [blame^] | 616 | VOS_TRACE(VOS_MODULE_ID_SME, VOS_TRACE_LEVEL_FATAL,"%s: Error!! pList is Null", __func__); |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 617 | return pNextEntry ; |
| 618 | } |
| 619 | |
| 620 | if ( LIST_FLAG_OPEN == pList->Flag ) |
| 621 | { |
| 622 | if ( fInterlocked ) |
| 623 | { |
| 624 | csrLLLock( pList ); |
| 625 | } |
| 626 | |
| 627 | if ( !csrIsListEmpty(&pList->ListHead) && csrLLFindEntry( pList, pEntry ) ) |
| 628 | { |
| 629 | pNextEntry = pEntry->last; |
| 630 | //Make sure we don't walk past the head |
| 631 | if ( pNextEntry == &pList->ListHead ) |
| 632 | { |
| 633 | pNextEntry = NULL; |
| 634 | } |
| 635 | } |
| 636 | |
| 637 | if ( fInterlocked ) |
| 638 | { |
| 639 | csrLLUnlock( pList ); |
| 640 | } |
| 641 | } |
| 642 | |
| 643 | return( pNextEntry ); |
| 644 | } |
| 645 | |
| 646 | |
| 647 | |
| 648 | |