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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); | |
9155c924 | 56 | if (!pstapriv->pallocated_stainfo_buf) |
2865d42c LF |
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; |
1ca96884 | 86 | while (!end_of_queue_search(phead, plist)) |
849fb0a8 | 87 | plist = plist->next; |
2865d42c LF |
88 | |
89 | spin_unlock_irqrestore(&pstapriv->sta_hash_lock, irqL); | |
90 | } | |
91 | ||
2865d42c LF |
92 | u32 _r8712_free_sta_priv(struct sta_priv *pstapriv) |
93 | { | |
94 | if (pstapriv) { | |
ec85e8c4 AKC |
95 | /* be done before free sta_hash_lock */ |
96 | mfree_all_stainfo(pstapriv); | |
2865d42c LF |
97 | kfree(pstapriv->pallocated_stainfo_buf); |
98 | } | |
99 | return _SUCCESS; | |
100 | } | |
101 | ||
102 | struct sta_info *r8712_alloc_stainfo(struct sta_priv *pstapriv, u8 *hwaddr) | |
103 | { | |
2865d42c LF |
104 | s32 index; |
105 | struct list_head *phash_list; | |
106 | struct sta_info *psta; | |
107 | struct __queue *pfree_sta_queue; | |
108 | struct recv_reorder_ctrl *preorder_ctrl; | |
109 | int i = 0; | |
110 | u16 wRxSeqInitialValue = 0xffff; | |
111 | unsigned long flags; | |
112 | ||
113 | pfree_sta_queue = &pstapriv->free_sta_queue; | |
818ff7b2 GT |
114 | spin_lock_irqsave(&pfree_sta_queue->lock, flags); |
115 | psta = list_first_entry_or_null(&pfree_sta_queue->queue, | |
116 | struct sta_info, list); | |
117 | if (psta) { | |
118 | list_del_init(&psta->list); | |
2865d42c LF |
119 | _init_stainfo(psta); |
120 | memcpy(psta->hwaddr, hwaddr, ETH_ALEN); | |
121 | index = wifi_mac_hash(hwaddr); | |
122 | if (index >= NUM_STA) { | |
123 | psta = NULL; | |
124 | goto exit; | |
125 | } | |
818ff7b2 | 126 | phash_list = &pstapriv->sta_hash[index]; |
fdfbf789 | 127 | list_add_tail(&psta->hash_list, phash_list); |
77e73e8c | 128 | pstapriv->asoc_sta_count++; |
2865d42c LF |
129 | |
130 | /* For the SMC router, the sequence number of first packet of WPS handshake | |
131 | * will be 0. In this case, this packet will be dropped by recv_decache function | |
132 | * if we use the 0x00 as the default value for tid_rxseq variable. So, we | |
133 | * initialize the tid_rxseq variable as the 0xffff. | |
134 | */ | |
135 | for (i = 0; i < 16; i++) | |
136 | memcpy(&psta->sta_recvpriv.rxcache.tid_rxseq[i], | |
137 | &wRxSeqInitialValue, 2); | |
138 | /* for A-MPDU Rx reordering buffer control */ | |
77e73e8c | 139 | for (i = 0; i < 16; i++) { |
2865d42c LF |
140 | preorder_ctrl = &psta->recvreorder_ctrl[i]; |
141 | preorder_ctrl->padapter = pstapriv->padapter; | |
142 | preorder_ctrl->indicate_seq = 0xffff; | |
143 | preorder_ctrl->wend_b = 0xffff; | |
144 | preorder_ctrl->wsize_b = 64; | |
145 | _init_queue(&preorder_ctrl->pending_recvframe_queue); | |
146 | r8712_init_recv_timer(preorder_ctrl); | |
147 | } | |
148 | } | |
149 | exit: | |
818ff7b2 | 150 | spin_unlock_irqrestore(&pfree_sta_queue->lock, flags); |
2865d42c LF |
151 | return psta; |
152 | } | |
153 | ||
154 | /* using pstapriv->sta_hash_lock to protect */ | |
155 | void r8712_free_stainfo(struct _adapter *padapter, struct sta_info *psta) | |
156 | { | |
157 | int i; | |
158 | unsigned long irqL0; | |
159 | struct __queue *pfree_sta_queue; | |
160 | struct recv_reorder_ctrl *preorder_ctrl; | |
161 | struct sta_xmit_priv *pstaxmitpriv; | |
162 | struct xmit_priv *pxmitpriv = &padapter->xmitpriv; | |
163 | struct sta_priv *pstapriv = &padapter->stapriv; | |
164 | ||
165 | if (psta == NULL) | |
166 | return; | |
167 | pfree_sta_queue = &pstapriv->free_sta_queue; | |
168 | pstaxmitpriv = &psta->sta_xmitpriv; | |
169 | spin_lock_irqsave(&(pxmitpriv->vo_pending.lock), irqL0); | |
170 | r8712_free_xmitframe_queue(pxmitpriv, &pstaxmitpriv->vo_q.sta_pending); | |
29197b7c | 171 | list_del_init(&(pstaxmitpriv->vo_q.tx_pending)); |
2865d42c LF |
172 | spin_unlock_irqrestore(&(pxmitpriv->vo_pending.lock), irqL0); |
173 | spin_lock_irqsave(&(pxmitpriv->vi_pending.lock), irqL0); | |
174 | r8712_free_xmitframe_queue(pxmitpriv, &pstaxmitpriv->vi_q.sta_pending); | |
29197b7c | 175 | list_del_init(&(pstaxmitpriv->vi_q.tx_pending)); |
2865d42c LF |
176 | spin_unlock_irqrestore(&(pxmitpriv->vi_pending.lock), irqL0); |
177 | spin_lock_irqsave(&(pxmitpriv->bk_pending.lock), irqL0); | |
178 | r8712_free_xmitframe_queue(pxmitpriv, &pstaxmitpriv->bk_q.sta_pending); | |
29197b7c | 179 | list_del_init(&(pstaxmitpriv->bk_q.tx_pending)); |
2865d42c LF |
180 | spin_unlock_irqrestore(&(pxmitpriv->bk_pending.lock), irqL0); |
181 | spin_lock_irqsave(&(pxmitpriv->be_pending.lock), irqL0); | |
182 | r8712_free_xmitframe_queue(pxmitpriv, &pstaxmitpriv->be_q.sta_pending); | |
29197b7c | 183 | list_del_init(&(pstaxmitpriv->be_q.tx_pending)); |
2865d42c | 184 | spin_unlock_irqrestore(&(pxmitpriv->be_pending.lock), irqL0); |
29197b7c | 185 | list_del_init(&psta->hash_list); |
2865d42c LF |
186 | pstapriv->asoc_sta_count--; |
187 | /* re-init sta_info; 20061114 */ | |
188 | _r8712_init_sta_xmit_priv(&psta->sta_xmitpriv); | |
189 | _r8712_init_sta_recv_priv(&psta->sta_recvpriv); | |
190 | /* for A-MPDU Rx reordering buffer control, | |
bef611a9 RB |
191 | * cancel reordering_ctrl_timer |
192 | */ | |
2865d42c LF |
193 | for (i = 0; i < 16; i++) { |
194 | preorder_ctrl = &psta->recvreorder_ctrl[i]; | |
a1471eb9 | 195 | del_timer(&preorder_ctrl->reordering_ctrl_timer); |
2865d42c LF |
196 | } |
197 | spin_lock(&(pfree_sta_queue->lock)); | |
198 | /* insert into free_sta_queue; 20061114 */ | |
e99a428a | 199 | list_add_tail(&psta->list, &pfree_sta_queue->queue); |
2865d42c LF |
200 | spin_unlock(&(pfree_sta_queue->lock)); |
201 | } | |
202 | ||
203 | /* free all stainfo which in sta_hash[all] */ | |
204 | void r8712_free_all_stainfo(struct _adapter *padapter) | |
205 | { | |
206 | unsigned long irqL; | |
207 | struct list_head *plist, *phead; | |
208 | s32 index; | |
209 | struct sta_info *psta = NULL; | |
210 | struct sta_priv *pstapriv = &padapter->stapriv; | |
211 | struct sta_info *pbcmc_stainfo = r8712_get_bcmc_stainfo(padapter); | |
212 | ||
213 | if (pstapriv->asoc_sta_count == 1) | |
214 | return; | |
215 | spin_lock_irqsave(&pstapriv->sta_hash_lock, irqL); | |
216 | for (index = 0; index < NUM_STA; index++) { | |
217 | phead = &(pstapriv->sta_hash[index]); | |
849fb0a8 | 218 | plist = phead->next; |
1ca96884 | 219 | while (!end_of_queue_search(phead, plist)) { |
fcc2cf12 GT |
220 | psta = container_of(plist, |
221 | struct sta_info, hash_list); | |
849fb0a8 | 222 | plist = plist->next; |
2865d42c | 223 | if (pbcmc_stainfo != psta) |
0636b460 | 224 | r8712_free_stainfo(padapter, psta); |
2865d42c LF |
225 | } |
226 | } | |
227 | spin_unlock_irqrestore(&pstapriv->sta_hash_lock, irqL); | |
228 | } | |
229 | ||
230 | /* any station allocated can be searched by hash list */ | |
231 | struct sta_info *r8712_get_stainfo(struct sta_priv *pstapriv, u8 *hwaddr) | |
232 | { | |
233 | unsigned long irqL; | |
234 | struct list_head *plist, *phead; | |
235 | struct sta_info *psta = NULL; | |
236 | u32 index; | |
237 | ||
238 | if (hwaddr == NULL) | |
239 | return NULL; | |
240 | index = wifi_mac_hash(hwaddr); | |
241 | spin_lock_irqsave(&pstapriv->sta_hash_lock, irqL); | |
242 | phead = &(pstapriv->sta_hash[index]); | |
849fb0a8 | 243 | plist = phead->next; |
1ca96884 | 244 | while (!end_of_queue_search(phead, plist)) { |
fcc2cf12 | 245 | psta = container_of(plist, struct sta_info, hash_list); |
2865d42c LF |
246 | if ((!memcmp(psta->hwaddr, hwaddr, ETH_ALEN))) { |
247 | /* if found the matched address */ | |
248 | break; | |
249 | } | |
250 | psta = NULL; | |
849fb0a8 | 251 | plist = plist->next; |
2865d42c LF |
252 | } |
253 | spin_unlock_irqrestore(&pstapriv->sta_hash_lock, irqL); | |
254 | return psta; | |
255 | } | |
256 | ||
257 | void r8712_init_bcmc_stainfo(struct _adapter *padapter) | |
258 | { | |
2865d42c LF |
259 | unsigned char bcast_addr[6] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff}; |
260 | struct sta_priv *pstapriv = &padapter->stapriv; | |
261 | ||
e29d3ebc | 262 | r8712_alloc_stainfo(pstapriv, bcast_addr); |
2865d42c LF |
263 | } |
264 | ||
265 | struct sta_info *r8712_get_bcmc_stainfo(struct _adapter *padapter) | |
266 | { | |
2865d42c LF |
267 | struct sta_priv *pstapriv = &padapter->stapriv; |
268 | u8 bc_addr[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff}; | |
269 | ||
05871f99 | 270 | return r8712_get_stainfo(pstapriv, bc_addr); |
2865d42c LF |
271 | } |
272 | ||
273 | ||
274 | u8 r8712_access_ctrl(struct wlan_acl_pool *pacl_list, u8 *mac_addr) | |
275 | { | |
276 | return true; | |
277 | } |