1 // SPDX-License-Identifier: GPL-2.0
2 /******************************************************************************
3 *
4 * Copyright(c) 2007 - 2011 Realtek Corporation. All rights reserved.
5 *
6 ******************************************************************************/
7 #include <drv_types.h>
8
9 void _rtw_init_stainfo(struct sta_info *psta);
_rtw_init_stainfo(struct sta_info * psta)10 void _rtw_init_stainfo(struct sta_info *psta)
11 {
12 memset((u8 *)psta, 0, sizeof(struct sta_info));
13
14 spin_lock_init(&psta->lock);
15 INIT_LIST_HEAD(&psta->list);
16 INIT_LIST_HEAD(&psta->hash_list);
17 /* INIT_LIST_HEAD(&psta->asoc_list); */
18 /* INIT_LIST_HEAD(&psta->sleep_list); */
19 /* INIT_LIST_HEAD(&psta->wakeup_list); */
20
21 INIT_LIST_HEAD(&psta->sleep_q.queue);
22 spin_lock_init(&psta->sleep_q.lock);
23 psta->sleepq_len = 0;
24
25 _rtw_init_sta_xmit_priv(&psta->sta_xmitpriv);
26 _rtw_init_sta_recv_priv(&psta->sta_recvpriv);
27
28 INIT_LIST_HEAD(&psta->asoc_list);
29
30 INIT_LIST_HEAD(&psta->auth_list);
31
32 psta->expire_to = 0;
33
34 psta->flags = 0;
35
36 psta->capability = 0;
37
38 psta->bpairwise_key_installed = false;
39
40 psta->nonerp_set = 0;
41 psta->no_short_slot_time_set = 0;
42 psta->no_short_preamble_set = 0;
43 psta->no_ht_gf_set = 0;
44 psta->no_ht_set = 0;
45 psta->ht_20mhz_set = 0;
46
47 psta->under_exist_checking = 0;
48
49 psta->keep_alive_trycnt = 0;
50 }
51
_rtw_init_sta_priv(struct sta_priv * pstapriv)52 u32 _rtw_init_sta_priv(struct sta_priv *pstapriv)
53 {
54 struct sta_info *psta;
55 s32 i;
56
57 pstapriv->pallocated_stainfo_buf = vzalloc(sizeof(struct sta_info) * NUM_STA+4);
58
59 if (!pstapriv->pallocated_stainfo_buf)
60 return _FAIL;
61
62 pstapriv->pstainfo_buf = pstapriv->pallocated_stainfo_buf + 4 -
63 ((SIZE_PTR)(pstapriv->pallocated_stainfo_buf) & 3);
64
65 INIT_LIST_HEAD(&pstapriv->free_sta_queue.queue);
66 spin_lock_init(&pstapriv->free_sta_queue.lock);
67
68 spin_lock_init(&pstapriv->sta_hash_lock);
69
70 /* _rtw_init_queue(&pstapriv->asoc_q); */
71 pstapriv->asoc_sta_count = 0;
72 INIT_LIST_HEAD(&pstapriv->sleep_q.queue);
73 spin_lock_init(&pstapriv->sleep_q.lock);
74 INIT_LIST_HEAD(&pstapriv->wakeup_q.queue);
75 spin_lock_init(&pstapriv->wakeup_q.lock);
76
77 psta = (struct sta_info *)(pstapriv->pstainfo_buf);
78
79 for (i = 0; i < NUM_STA; i++) {
80 _rtw_init_stainfo(psta);
81
82 INIT_LIST_HEAD(&(pstapriv->sta_hash[i]));
83
84 list_add_tail(&psta->list, get_list_head(&pstapriv->free_sta_queue));
85
86 psta++;
87 }
88
89 pstapriv->sta_dz_bitmap = 0;
90 pstapriv->tim_bitmap = 0;
91
92 INIT_LIST_HEAD(&pstapriv->asoc_list);
93 INIT_LIST_HEAD(&pstapriv->auth_list);
94 spin_lock_init(&pstapriv->asoc_list_lock);
95 spin_lock_init(&pstapriv->auth_list_lock);
96 pstapriv->asoc_list_cnt = 0;
97 pstapriv->auth_list_cnt = 0;
98
99 pstapriv->auth_to = 3; /* 3*2 = 6 sec */
100 pstapriv->assoc_to = 3;
101 pstapriv->expire_to = 3; /* 3*2 = 6 sec */
102 pstapriv->max_num_sta = NUM_STA;
103 return _SUCCESS;
104 }
105
rtw_stainfo_offset(struct sta_priv * stapriv,struct sta_info * sta)106 inline int rtw_stainfo_offset(struct sta_priv *stapriv, struct sta_info *sta)
107 {
108 int offset = (((u8 *)sta) - stapriv->pstainfo_buf)/sizeof(struct sta_info);
109
110 return offset;
111 }
112
rtw_get_stainfo_by_offset(struct sta_priv * stapriv,int offset)113 inline struct sta_info *rtw_get_stainfo_by_offset(struct sta_priv *stapriv, int offset)
114 {
115 return (struct sta_info *)(stapriv->pstainfo_buf + offset * sizeof(struct sta_info));
116 }
117
118 /* this function is used to free the memory of lock || sema for all stainfos */
119 void kfree_all_stainfo(struct sta_priv *pstapriv);
kfree_all_stainfo(struct sta_priv * pstapriv)120 void kfree_all_stainfo(struct sta_priv *pstapriv)
121 {
122 struct list_head *plist, *phead;
123
124 spin_lock_bh(&pstapriv->sta_hash_lock);
125
126 phead = get_list_head(&pstapriv->free_sta_queue);
127 plist = get_next(phead);
128
129 while (phead != plist)
130 plist = get_next(plist);
131
132 spin_unlock_bh(&pstapriv->sta_hash_lock);
133 }
134
135 void kfree_sta_priv_lock(struct sta_priv *pstapriv);
kfree_sta_priv_lock(struct sta_priv * pstapriv)136 void kfree_sta_priv_lock(struct sta_priv *pstapriv)
137 {
138 kfree_all_stainfo(pstapriv); /* be done before free sta_hash_lock */
139 }
140
_rtw_free_sta_priv(struct sta_priv * pstapriv)141 u32 _rtw_free_sta_priv(struct sta_priv *pstapriv)
142 {
143 struct list_head *phead, *plist;
144 struct sta_info *psta = NULL;
145 struct recv_reorder_ctrl *preorder_ctrl;
146 int index;
147
148 if (pstapriv) {
149 /*delete all reordering_ctrl_timer */
150 spin_lock_bh(&pstapriv->sta_hash_lock);
151 for (index = 0; index < NUM_STA; index++) {
152 phead = &(pstapriv->sta_hash[index]);
153 list_for_each(plist, phead) {
154 int i;
155
156 psta = list_entry(plist, struct sta_info,
157 hash_list);
158
159 for (i = 0; i < 16 ; i++) {
160 preorder_ctrl = &psta->recvreorder_ctrl[i];
161 del_timer_sync(&preorder_ctrl->reordering_ctrl_timer);
162 }
163 }
164 }
165 spin_unlock_bh(&pstapriv->sta_hash_lock);
166 /*===============================*/
167
168 kfree_sta_priv_lock(pstapriv);
169
170 vfree(pstapriv->pallocated_stainfo_buf);
171 }
172 return _SUCCESS;
173 }
174
175 /* struct sta_info *rtw_alloc_stainfo(_queue *pfree_sta_queue, unsigned char *hwaddr) */
rtw_alloc_stainfo(struct sta_priv * pstapriv,u8 * hwaddr)176 struct sta_info *rtw_alloc_stainfo(struct sta_priv *pstapriv, u8 *hwaddr)
177 {
178 s32 index;
179 struct list_head *phash_list;
180 struct sta_info *psta;
181 struct __queue *pfree_sta_queue;
182 struct recv_reorder_ctrl *preorder_ctrl;
183 int i = 0;
184 u16 wRxSeqInitialValue = 0xffff;
185
186 pfree_sta_queue = &pstapriv->free_sta_queue;
187
188 /* spin_lock_bh(&(pfree_sta_queue->lock)); */
189 spin_lock_bh(&(pstapriv->sta_hash_lock));
190 if (list_empty(&pfree_sta_queue->queue)) {
191 /* spin_unlock_bh(&(pfree_sta_queue->lock)); */
192 spin_unlock_bh(&(pstapriv->sta_hash_lock));
193 return NULL;
194 } else {
195 psta = container_of(get_next(&pfree_sta_queue->queue), struct sta_info, list);
196
197 list_del_init(&(psta->list));
198
199 /* spin_unlock_bh(&(pfree_sta_queue->lock)); */
200
201 _rtw_init_stainfo(psta);
202
203 psta->padapter = pstapriv->padapter;
204
205 memcpy(psta->hwaddr, hwaddr, ETH_ALEN);
206
207 index = wifi_mac_hash(hwaddr);
208
209 if (index >= NUM_STA) {
210 spin_unlock_bh(&(pstapriv->sta_hash_lock));
211 psta = NULL;
212 goto exit;
213 }
214 phash_list = &(pstapriv->sta_hash[index]);
215
216 /* spin_lock_bh(&(pstapriv->sta_hash_lock)); */
217
218 list_add_tail(&psta->hash_list, phash_list);
219
220 pstapriv->asoc_sta_count++;
221
222 /* spin_unlock_bh(&(pstapriv->sta_hash_lock)); */
223
224 /* Commented by Albert 2009/08/13 */
225 /* For the SMC router, the sequence number of first packet of WPS handshake will be 0. */
226 /* In this case, this packet will be dropped by recv_decache function if we use the 0x00 as the default value for tid_rxseq variable. */
227 /* So, we initialize the tid_rxseq variable as the 0xffff. */
228
229 for (i = 0; i < 16; i++)
230 memcpy(&psta->sta_recvpriv.rxcache.tid_rxseq[i], &wRxSeqInitialValue, 2);
231
232 init_addba_retry_timer(pstapriv->padapter, psta);
233
234 /* for A-MPDU Rx reordering buffer control */
235 for (i = 0; i < 16 ; i++) {
236 preorder_ctrl = &psta->recvreorder_ctrl[i];
237
238 preorder_ctrl->padapter = pstapriv->padapter;
239
240 preorder_ctrl->enable = false;
241
242 preorder_ctrl->indicate_seq = 0xffff;
243 preorder_ctrl->wend_b = 0xffff;
244 /* preorder_ctrl->wsize_b = (NR_RECVBUFF-2); */
245 preorder_ctrl->wsize_b = 64;/* 64; */
246
247 INIT_LIST_HEAD(&preorder_ctrl->pending_recvframe_queue.queue);
248 spin_lock_init(&preorder_ctrl->pending_recvframe_queue.lock);
249
250 rtw_init_recv_timer(preorder_ctrl);
251 }
252
253 /* init for DM */
254 psta->rssi_stat.UndecoratedSmoothedPWDB = (-1);
255 psta->rssi_stat.UndecoratedSmoothedCCK = (-1);
256
257 /* init for the sequence number of received management frame */
258 psta->RxMgmtFrameSeqNum = 0xffff;
259 spin_unlock_bh(&(pstapriv->sta_hash_lock));
260 /* alloc mac id for non-bc/mc station, */
261 rtw_alloc_macid(pstapriv->padapter, psta);
262 }
263
264 exit:
265
266 return psta;
267 }
268
rtw_free_stainfo(struct adapter * padapter,struct sta_info * psta)269 u32 rtw_free_stainfo(struct adapter *padapter, struct sta_info *psta)
270 {
271 int i;
272 struct __queue *pfree_sta_queue;
273 struct recv_reorder_ctrl *preorder_ctrl;
274 struct sta_xmit_priv *pstaxmitpriv;
275 struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
276 struct sta_priv *pstapriv = &padapter->stapriv;
277 struct hw_xmit *phwxmit;
278
279 if (!psta)
280 goto exit;
281
282 spin_lock_bh(&psta->lock);
283 psta->state &= ~_FW_LINKED;
284 spin_unlock_bh(&psta->lock);
285
286 pfree_sta_queue = &pstapriv->free_sta_queue;
287
288 pstaxmitpriv = &psta->sta_xmitpriv;
289
290 /* list_del_init(&psta->sleep_list); */
291
292 /* list_del_init(&psta->wakeup_list); */
293
294 spin_lock_bh(&pxmitpriv->lock);
295
296 rtw_free_xmitframe_queue(pxmitpriv, &psta->sleep_q);
297 psta->sleepq_len = 0;
298
299 /* vo */
300 /* spin_lock_bh(&(pxmitpriv->vo_pending.lock)); */
301 rtw_free_xmitframe_queue(pxmitpriv, &pstaxmitpriv->vo_q.sta_pending);
302 list_del_init(&(pstaxmitpriv->vo_q.tx_pending));
303 phwxmit = pxmitpriv->hwxmits;
304 phwxmit->accnt -= pstaxmitpriv->vo_q.qcnt;
305 pstaxmitpriv->vo_q.qcnt = 0;
306 /* spin_unlock_bh(&(pxmitpriv->vo_pending.lock)); */
307
308 /* vi */
309 /* spin_lock_bh(&(pxmitpriv->vi_pending.lock)); */
310 rtw_free_xmitframe_queue(pxmitpriv, &pstaxmitpriv->vi_q.sta_pending);
311 list_del_init(&(pstaxmitpriv->vi_q.tx_pending));
312 phwxmit = pxmitpriv->hwxmits+1;
313 phwxmit->accnt -= pstaxmitpriv->vi_q.qcnt;
314 pstaxmitpriv->vi_q.qcnt = 0;
315 /* spin_unlock_bh(&(pxmitpriv->vi_pending.lock)); */
316
317 /* be */
318 /* spin_lock_bh(&(pxmitpriv->be_pending.lock)); */
319 rtw_free_xmitframe_queue(pxmitpriv, &pstaxmitpriv->be_q.sta_pending);
320 list_del_init(&(pstaxmitpriv->be_q.tx_pending));
321 phwxmit = pxmitpriv->hwxmits+2;
322 phwxmit->accnt -= pstaxmitpriv->be_q.qcnt;
323 pstaxmitpriv->be_q.qcnt = 0;
324 /* spin_unlock_bh(&(pxmitpriv->be_pending.lock)); */
325
326 /* bk */
327 /* spin_lock_bh(&(pxmitpriv->bk_pending.lock)); */
328 rtw_free_xmitframe_queue(pxmitpriv, &pstaxmitpriv->bk_q.sta_pending);
329 list_del_init(&(pstaxmitpriv->bk_q.tx_pending));
330 phwxmit = pxmitpriv->hwxmits+3;
331 phwxmit->accnt -= pstaxmitpriv->bk_q.qcnt;
332 pstaxmitpriv->bk_q.qcnt = 0;
333 /* spin_unlock_bh(&(pxmitpriv->bk_pending.lock)); */
334
335 spin_unlock_bh(&pxmitpriv->lock);
336
337 spin_lock_bh(&pstapriv->sta_hash_lock);
338 list_del_init(&psta->hash_list);
339 pstapriv->asoc_sta_count--;
340 spin_unlock_bh(&pstapriv->sta_hash_lock);
341
342 /* re-init sta_info; 20061114 will be init in alloc_stainfo */
343 /* _rtw_init_sta_xmit_priv(&psta->sta_xmitpriv); */
344 /* _rtw_init_sta_recv_priv(&psta->sta_recvpriv); */
345
346 del_timer_sync(&psta->addba_retry_timer);
347
348 /* for A-MPDU Rx reordering buffer control, cancel reordering_ctrl_timer */
349 for (i = 0; i < 16 ; i++) {
350 struct list_head *phead, *plist;
351 union recv_frame *prframe;
352 struct __queue *ppending_recvframe_queue;
353 struct __queue *pfree_recv_queue = &padapter->recvpriv.free_recv_queue;
354
355 preorder_ctrl = &psta->recvreorder_ctrl[i];
356
357 del_timer_sync(&preorder_ctrl->reordering_ctrl_timer);
358
359 ppending_recvframe_queue = &preorder_ctrl->pending_recvframe_queue;
360
361 spin_lock_bh(&ppending_recvframe_queue->lock);
362
363 phead = get_list_head(ppending_recvframe_queue);
364 plist = get_next(phead);
365
366 while (!list_empty(phead)) {
367 prframe = (union recv_frame *)plist;
368
369 plist = get_next(plist);
370
371 list_del_init(&(prframe->u.hdr.list));
372
373 rtw_free_recvframe(prframe, pfree_recv_queue);
374 }
375
376 spin_unlock_bh(&ppending_recvframe_queue->lock);
377 }
378
379 if (!(psta->state & WIFI_AP_STATE))
380 rtw_hal_set_odm_var(padapter, HAL_ODM_STA_INFO, psta, false);
381
382 /* release mac id for non-bc/mc station, */
383 rtw_release_macid(pstapriv->padapter, psta);
384
385 /*
386 spin_lock_bh(&pstapriv->asoc_list_lock);
387 list_del_init(&psta->asoc_list);
388 spin_unlock_bh(&pstapriv->asoc_list_lock);
389 */
390 spin_lock_bh(&pstapriv->auth_list_lock);
391 if (!list_empty(&psta->auth_list)) {
392 list_del_init(&psta->auth_list);
393 pstapriv->auth_list_cnt--;
394 }
395 spin_unlock_bh(&pstapriv->auth_list_lock);
396
397 psta->expire_to = 0;
398 psta->sleepq_ac_len = 0;
399 psta->qos_info = 0;
400
401 psta->max_sp_len = 0;
402 psta->uapsd_bk = 0;
403 psta->uapsd_be = 0;
404 psta->uapsd_vi = 0;
405 psta->uapsd_vo = 0;
406
407 psta->has_legacy_ac = 0;
408
409 pstapriv->sta_dz_bitmap &= ~BIT(psta->aid);
410 pstapriv->tim_bitmap &= ~BIT(psta->aid);
411
412 if ((psta->aid > 0) && (pstapriv->sta_aid[psta->aid - 1] == psta)) {
413 pstapriv->sta_aid[psta->aid - 1] = NULL;
414 psta->aid = 0;
415 }
416
417 psta->under_exist_checking = 0;
418
419 /* spin_lock_bh(&(pfree_sta_queue->lock)); */
420 list_add_tail(&psta->list, get_list_head(pfree_sta_queue));
421 /* spin_unlock_bh(&(pfree_sta_queue->lock)); */
422
423 exit:
424 return _SUCCESS;
425 }
426
427 /* free all stainfo which in sta_hash[all] */
rtw_free_all_stainfo(struct adapter * padapter)428 void rtw_free_all_stainfo(struct adapter *padapter)
429 {
430 struct list_head *plist, *phead, *tmp;
431 s32 index;
432 struct sta_info *psta = NULL;
433 struct sta_priv *pstapriv = &padapter->stapriv;
434 struct sta_info *pbcmc_stainfo = rtw_get_bcmc_stainfo(padapter);
435 LIST_HEAD(stainfo_free_list);
436
437 if (pstapriv->asoc_sta_count == 1)
438 return;
439
440 spin_lock_bh(&pstapriv->sta_hash_lock);
441
442 for (index = 0; index < NUM_STA; index++) {
443 phead = &(pstapriv->sta_hash[index]);
444 list_for_each_safe(plist, tmp, phead) {
445 psta = list_entry(plist, struct sta_info, hash_list);
446
447 if (pbcmc_stainfo != psta)
448 list_move(&psta->hash_list, &stainfo_free_list);
449 }
450 }
451
452 spin_unlock_bh(&pstapriv->sta_hash_lock);
453
454 list_for_each_safe(plist, tmp, &stainfo_free_list) {
455 psta = list_entry(plist, struct sta_info, hash_list);
456 rtw_free_stainfo(padapter, psta);
457 }
458 }
459
460 /* any station allocated can be searched by hash list */
rtw_get_stainfo(struct sta_priv * pstapriv,u8 * hwaddr)461 struct sta_info *rtw_get_stainfo(struct sta_priv *pstapriv, u8 *hwaddr)
462 {
463 struct list_head *plist, *phead;
464 struct sta_info *psta = NULL;
465 u32 index;
466 u8 *addr;
467 u8 bc_addr[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
468
469 if (!hwaddr)
470 return NULL;
471
472 if (is_multicast_ether_addr(hwaddr))
473 addr = bc_addr;
474 else
475 addr = hwaddr;
476
477 index = wifi_mac_hash(addr);
478
479 spin_lock_bh(&pstapriv->sta_hash_lock);
480
481 phead = &(pstapriv->sta_hash[index]);
482 list_for_each(plist, phead) {
483 psta = list_entry(plist, struct sta_info, hash_list);
484
485 if ((!memcmp(psta->hwaddr, addr, ETH_ALEN)))
486 /* if found the matched address */
487 break;
488
489 psta = NULL;
490 }
491
492 spin_unlock_bh(&pstapriv->sta_hash_lock);
493 return psta;
494 }
495
rtw_init_bcmc_stainfo(struct adapter * padapter)496 u32 rtw_init_bcmc_stainfo(struct adapter *padapter)
497 {
498 struct sta_info *psta;
499 NDIS_802_11_MAC_ADDRESS bcast_addr = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
500
501 struct sta_priv *pstapriv = &padapter->stapriv;
502 /* struct __queue *pstapending = &padapter->xmitpriv.bm_pending; */
503
504 psta = rtw_alloc_stainfo(pstapriv, bcast_addr);
505
506 if (!psta)
507 return _FAIL;
508
509 /* default broadcast & multicast use macid 1 */
510 psta->mac_id = 1;
511
512 return _SUCCESS;
513 }
514
rtw_get_bcmc_stainfo(struct adapter * padapter)515 struct sta_info *rtw_get_bcmc_stainfo(struct adapter *padapter)
516 {
517 struct sta_priv *pstapriv = &padapter->stapriv;
518 u8 bc_addr[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
519
520 return rtw_get_stainfo(pstapriv, bc_addr);
521 }
522
rtw_access_ctrl(struct adapter * padapter,u8 * mac_addr)523 u8 rtw_access_ctrl(struct adapter *padapter, u8 *mac_addr)
524 {
525 bool res = true;
526 struct list_head *plist, *phead;
527 struct rtw_wlan_acl_node *paclnode;
528 bool match = false;
529 struct sta_priv *pstapriv = &padapter->stapriv;
530 struct wlan_acl_pool *pacl_list = &pstapriv->acl_list;
531 struct __queue *pacl_node_q = &pacl_list->acl_node_q;
532
533 spin_lock_bh(&(pacl_node_q->lock));
534 phead = get_list_head(pacl_node_q);
535 list_for_each(plist, phead) {
536 paclnode = list_entry(plist, struct rtw_wlan_acl_node, list);
537
538 if (!memcmp(paclnode->addr, mac_addr, ETH_ALEN))
539 if (paclnode->valid == true) {
540 match = true;
541 break;
542 }
543 }
544 spin_unlock_bh(&(pacl_node_q->lock));
545
546 if (pacl_list->mode == 1) /* accept unless in deny list */
547 res = !match;
548
549 else if (pacl_list->mode == 2)/* deny unless in accept list */
550 res = match;
551 else
552 res = true;
553
554 return res;
555 }
556