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2865d42c LF |
1 | /****************************************************************************** |
2 | * rtl871x_sta_mgt.c | |
3 | * | |
4 | * Copyright(c) 2007 - 2010 Realtek Corporation. All rights reserved. | |
5 | * Linux device driver for RTL8192SU | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify it | |
8 | * under the terms of version 2 of the GNU General Public License as | |
9 | * published by the Free Software Foundation. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, but WITHOUT | |
12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
14 | * more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License along with | |
17 | * this program; if not, write to the Free Software Foundation, Inc., | |
18 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA | |
19 | * | |
20 | * Modifications for inclusion into the Linux staging tree are | |
21 | * Copyright(c) 2010 Larry Finger. All rights reserved. | |
22 | * | |
23 | * Contact information: | |
24 | * WLAN FAE <wlanfae@realtek.com> | |
25 | * Larry Finger <Larry.Finger@lwfinger.net> | |
26 | * | |
27 | ******************************************************************************/ | |
28 | ||
29 | #define _RTL871X_STA_MGT_C_ | |
30 | ||
31 | #include "osdep_service.h" | |
32 | #include "drv_types.h" | |
33 | #include "recv_osdep.h" | |
34 | #include "xmit_osdep.h" | |
35 | #include "sta_info.h" | |
36 | ||
37 | static void _init_stainfo(struct sta_info *psta) | |
38 | { | |
39 | memset((u8 *)psta, 0, sizeof(struct sta_info)); | |
40 | spin_lock_init(&psta->lock); | |
534c4acd JS |
41 | INIT_LIST_HEAD(&psta->list); |
42 | INIT_LIST_HEAD(&psta->hash_list); | |
2865d42c LF |
43 | _r8712_init_sta_xmit_priv(&psta->sta_xmitpriv); |
44 | _r8712_init_sta_recv_priv(&psta->sta_recvpriv); | |
534c4acd JS |
45 | INIT_LIST_HEAD(&psta->asoc_list); |
46 | INIT_LIST_HEAD(&psta->auth_list); | |
2865d42c LF |
47 | } |
48 | ||
49 | u32 _r8712_init_sta_priv(struct sta_priv *pstapriv) | |
50 | { | |
51 | struct sta_info *psta; | |
52 | s32 i; | |
53 | ||
91d435fe VO |
54 | pstapriv->pallocated_stainfo_buf = kmalloc(sizeof(struct sta_info) * |
55 | NUM_STA + 4, GFP_ATOMIC); | |
2865d42c LF |
56 | if (pstapriv->pallocated_stainfo_buf == NULL) |
57 | return _FAIL; | |
58 | pstapriv->pstainfo_buf = pstapriv->pallocated_stainfo_buf + 4 - | |
59 | ((addr_t)(pstapriv->pallocated_stainfo_buf) & 3); | |
60 | _init_queue(&pstapriv->free_sta_queue); | |
61 | spin_lock_init(&pstapriv->sta_hash_lock); | |
62 | pstapriv->asoc_sta_count = 0; | |
63 | _init_queue(&pstapriv->sleep_q); | |
64 | _init_queue(&pstapriv->wakeup_q); | |
65 | psta = (struct sta_info *)(pstapriv->pstainfo_buf); | |
66 | for (i = 0; i < NUM_STA; i++) { | |
67 | _init_stainfo(psta); | |
534c4acd | 68 | INIT_LIST_HEAD(&(pstapriv->sta_hash[i])); |
e99a428a | 69 | list_add_tail(&psta->list, &pstapriv->free_sta_queue.queue); |
2865d42c LF |
70 | psta++; |
71 | } | |
534c4acd JS |
72 | INIT_LIST_HEAD(&pstapriv->asoc_list); |
73 | INIT_LIST_HEAD(&pstapriv->auth_list); | |
2865d42c LF |
74 | return _SUCCESS; |
75 | } | |
76 | ||
77 | /* this function is used to free the memory of lock || sema for all stainfos */ | |
78 | static void mfree_all_stainfo(struct sta_priv *pstapriv) | |
79 | { | |
80 | unsigned long irqL; | |
81 | struct list_head *plist, *phead; | |
2865d42c LF |
82 | |
83 | spin_lock_irqsave(&pstapriv->sta_hash_lock, irqL); | |
e99a428a | 84 | phead = &pstapriv->free_sta_queue.queue; |
849fb0a8 | 85 | plist = phead->next; |
3002b1a6 | 86 | while ((end_of_queue_search(phead, plist)) == false) |
849fb0a8 | 87 | plist = plist->next; |
2865d42c LF |
88 | |
89 | spin_unlock_irqrestore(&pstapriv->sta_hash_lock, irqL); | |
90 | } | |
91 | ||
92 | ||
93 | static void mfree_sta_priv_lock(struct sta_priv *pstapriv) | |
94 | { | |
95 | mfree_all_stainfo(pstapriv); /* be done before free sta_hash_lock */ | |
96 | } | |
97 | ||
98 | u32 _r8712_free_sta_priv(struct sta_priv *pstapriv) | |
99 | { | |
100 | if (pstapriv) { | |
101 | mfree_sta_priv_lock(pstapriv); | |
102 | kfree(pstapriv->pallocated_stainfo_buf); | |
103 | } | |
104 | return _SUCCESS; | |
105 | } | |
106 | ||
107 | struct sta_info *r8712_alloc_stainfo(struct sta_priv *pstapriv, u8 *hwaddr) | |
108 | { | |
2865d42c LF |
109 | s32 index; |
110 | struct list_head *phash_list; | |
111 | struct sta_info *psta; | |
112 | struct __queue *pfree_sta_queue; | |
113 | struct recv_reorder_ctrl *preorder_ctrl; | |
114 | int i = 0; | |
115 | u16 wRxSeqInitialValue = 0xffff; | |
116 | unsigned long flags; | |
117 | ||
118 | pfree_sta_queue = &pstapriv->free_sta_queue; | |
119 | spin_lock_irqsave(&(pfree_sta_queue->lock), flags); | |
df353f61 | 120 | if (list_empty(&pfree_sta_queue->queue)) |
2865d42c LF |
121 | psta = NULL; |
122 | else { | |
849fb0a8 | 123 | psta = LIST_CONTAINOR(pfree_sta_queue->queue.next, |
2865d42c | 124 | struct sta_info, list); |
29197b7c | 125 | list_del_init(&(psta->list)); |
2865d42c LF |
126 | _init_stainfo(psta); |
127 | memcpy(psta->hwaddr, hwaddr, ETH_ALEN); | |
128 | index = wifi_mac_hash(hwaddr); | |
129 | if (index >= NUM_STA) { | |
130 | psta = NULL; | |
131 | goto exit; | |
132 | } | |
133 | phash_list = &(pstapriv->sta_hash[index]); | |
fdfbf789 | 134 | list_add_tail(&psta->hash_list, phash_list); |
77e73e8c | 135 | pstapriv->asoc_sta_count++; |
2865d42c LF |
136 | |
137 | /* For the SMC router, the sequence number of first packet of WPS handshake | |
138 | * will be 0. In this case, this packet will be dropped by recv_decache function | |
139 | * if we use the 0x00 as the default value for tid_rxseq variable. So, we | |
140 | * initialize the tid_rxseq variable as the 0xffff. | |
141 | */ | |
142 | for (i = 0; i < 16; i++) | |
143 | memcpy(&psta->sta_recvpriv.rxcache.tid_rxseq[i], | |
144 | &wRxSeqInitialValue, 2); | |
145 | /* for A-MPDU Rx reordering buffer control */ | |
77e73e8c | 146 | for (i = 0; i < 16; i++) { |
2865d42c LF |
147 | preorder_ctrl = &psta->recvreorder_ctrl[i]; |
148 | preorder_ctrl->padapter = pstapriv->padapter; | |
149 | preorder_ctrl->indicate_seq = 0xffff; | |
150 | preorder_ctrl->wend_b = 0xffff; | |
151 | preorder_ctrl->wsize_b = 64; | |
152 | _init_queue(&preorder_ctrl->pending_recvframe_queue); | |
153 | r8712_init_recv_timer(preorder_ctrl); | |
154 | } | |
155 | } | |
156 | exit: | |
157 | spin_unlock_irqrestore(&(pfree_sta_queue->lock), flags); | |
158 | return psta; | |
159 | } | |
160 | ||
161 | /* using pstapriv->sta_hash_lock to protect */ | |
162 | void r8712_free_stainfo(struct _adapter *padapter, struct sta_info *psta) | |
163 | { | |
164 | int i; | |
165 | unsigned long irqL0; | |
166 | struct __queue *pfree_sta_queue; | |
167 | struct recv_reorder_ctrl *preorder_ctrl; | |
168 | struct sta_xmit_priv *pstaxmitpriv; | |
169 | struct xmit_priv *pxmitpriv = &padapter->xmitpriv; | |
170 | struct sta_priv *pstapriv = &padapter->stapriv; | |
171 | ||
172 | if (psta == NULL) | |
173 | return; | |
174 | pfree_sta_queue = &pstapriv->free_sta_queue; | |
175 | pstaxmitpriv = &psta->sta_xmitpriv; | |
176 | spin_lock_irqsave(&(pxmitpriv->vo_pending.lock), irqL0); | |
177 | r8712_free_xmitframe_queue(pxmitpriv, &pstaxmitpriv->vo_q.sta_pending); | |
29197b7c | 178 | list_del_init(&(pstaxmitpriv->vo_q.tx_pending)); |
2865d42c LF |
179 | spin_unlock_irqrestore(&(pxmitpriv->vo_pending.lock), irqL0); |
180 | spin_lock_irqsave(&(pxmitpriv->vi_pending.lock), irqL0); | |
181 | r8712_free_xmitframe_queue(pxmitpriv, &pstaxmitpriv->vi_q.sta_pending); | |
29197b7c | 182 | list_del_init(&(pstaxmitpriv->vi_q.tx_pending)); |
2865d42c LF |
183 | spin_unlock_irqrestore(&(pxmitpriv->vi_pending.lock), irqL0); |
184 | spin_lock_irqsave(&(pxmitpriv->bk_pending.lock), irqL0); | |
185 | r8712_free_xmitframe_queue(pxmitpriv, &pstaxmitpriv->bk_q.sta_pending); | |
29197b7c | 186 | list_del_init(&(pstaxmitpriv->bk_q.tx_pending)); |
2865d42c LF |
187 | spin_unlock_irqrestore(&(pxmitpriv->bk_pending.lock), irqL0); |
188 | spin_lock_irqsave(&(pxmitpriv->be_pending.lock), irqL0); | |
189 | r8712_free_xmitframe_queue(pxmitpriv, &pstaxmitpriv->be_q.sta_pending); | |
29197b7c | 190 | list_del_init(&(pstaxmitpriv->be_q.tx_pending)); |
2865d42c | 191 | spin_unlock_irqrestore(&(pxmitpriv->be_pending.lock), irqL0); |
29197b7c | 192 | list_del_init(&psta->hash_list); |
2865d42c LF |
193 | pstapriv->asoc_sta_count--; |
194 | /* re-init sta_info; 20061114 */ | |
195 | _r8712_init_sta_xmit_priv(&psta->sta_xmitpriv); | |
196 | _r8712_init_sta_recv_priv(&psta->sta_recvpriv); | |
197 | /* for A-MPDU Rx reordering buffer control, | |
198 | * cancel reordering_ctrl_timer */ | |
199 | for (i = 0; i < 16; i++) { | |
200 | preorder_ctrl = &psta->recvreorder_ctrl[i]; | |
6501c8e7 | 201 | del_timer_sync(&preorder_ctrl->reordering_ctrl_timer); |
2865d42c LF |
202 | } |
203 | spin_lock(&(pfree_sta_queue->lock)); | |
204 | /* insert into free_sta_queue; 20061114 */ | |
e99a428a | 205 | list_add_tail(&psta->list, &pfree_sta_queue->queue); |
2865d42c LF |
206 | spin_unlock(&(pfree_sta_queue->lock)); |
207 | } | |
208 | ||
209 | /* free all stainfo which in sta_hash[all] */ | |
210 | void r8712_free_all_stainfo(struct _adapter *padapter) | |
211 | { | |
212 | unsigned long irqL; | |
213 | struct list_head *plist, *phead; | |
214 | s32 index; | |
215 | struct sta_info *psta = NULL; | |
216 | struct sta_priv *pstapriv = &padapter->stapriv; | |
217 | struct sta_info *pbcmc_stainfo = r8712_get_bcmc_stainfo(padapter); | |
218 | ||
219 | if (pstapriv->asoc_sta_count == 1) | |
220 | return; | |
221 | spin_lock_irqsave(&pstapriv->sta_hash_lock, irqL); | |
222 | for (index = 0; index < NUM_STA; index++) { | |
223 | phead = &(pstapriv->sta_hash[index]); | |
849fb0a8 | 224 | plist = phead->next; |
2865d42c LF |
225 | while ((end_of_queue_search(phead, plist)) == false) { |
226 | psta = LIST_CONTAINOR(plist, | |
227 | struct sta_info, hash_list); | |
849fb0a8 | 228 | plist = plist->next; |
2865d42c | 229 | if (pbcmc_stainfo != psta) |
0636b460 | 230 | r8712_free_stainfo(padapter, psta); |
2865d42c LF |
231 | } |
232 | } | |
233 | spin_unlock_irqrestore(&pstapriv->sta_hash_lock, irqL); | |
234 | } | |
235 | ||
236 | /* any station allocated can be searched by hash list */ | |
237 | struct sta_info *r8712_get_stainfo(struct sta_priv *pstapriv, u8 *hwaddr) | |
238 | { | |
239 | unsigned long irqL; | |
240 | struct list_head *plist, *phead; | |
241 | struct sta_info *psta = NULL; | |
242 | u32 index; | |
243 | ||
244 | if (hwaddr == NULL) | |
245 | return NULL; | |
246 | index = wifi_mac_hash(hwaddr); | |
247 | spin_lock_irqsave(&pstapriv->sta_hash_lock, irqL); | |
248 | phead = &(pstapriv->sta_hash[index]); | |
849fb0a8 | 249 | plist = phead->next; |
2865d42c LF |
250 | while ((end_of_queue_search(phead, plist)) == false) { |
251 | psta = LIST_CONTAINOR(plist, struct sta_info, hash_list); | |
252 | if ((!memcmp(psta->hwaddr, hwaddr, ETH_ALEN))) { | |
253 | /* if found the matched address */ | |
254 | break; | |
255 | } | |
256 | psta = NULL; | |
849fb0a8 | 257 | plist = plist->next; |
2865d42c LF |
258 | } |
259 | spin_unlock_irqrestore(&pstapriv->sta_hash_lock, irqL); | |
260 | return psta; | |
261 | } | |
262 | ||
263 | void r8712_init_bcmc_stainfo(struct _adapter *padapter) | |
264 | { | |
2865d42c LF |
265 | unsigned char bcast_addr[6] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff}; |
266 | struct sta_priv *pstapriv = &padapter->stapriv; | |
267 | ||
e29d3ebc | 268 | r8712_alloc_stainfo(pstapriv, bcast_addr); |
2865d42c LF |
269 | } |
270 | ||
271 | struct sta_info *r8712_get_bcmc_stainfo(struct _adapter *padapter) | |
272 | { | |
273 | struct sta_info *psta; | |
274 | struct sta_priv *pstapriv = &padapter->stapriv; | |
275 | u8 bc_addr[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff}; | |
276 | ||
277 | psta = r8712_get_stainfo(pstapriv, bc_addr); | |
278 | return psta; | |
279 | } | |
280 | ||
281 | ||
282 | u8 r8712_access_ctrl(struct wlan_acl_pool *pacl_list, u8 *mac_addr) | |
283 | { | |
284 | return true; | |
285 | } |