Larry Finger | 2865d42 | 2010-08-20 10:15:30 -0500 | [diff] [blame] | 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); |
| 41 | _init_listhead(&psta->list); |
| 42 | _init_listhead(&psta->hash_list); |
| 43 | _r8712_init_sta_xmit_priv(&psta->sta_xmitpriv); |
| 44 | _r8712_init_sta_recv_priv(&psta->sta_recvpriv); |
Larry Finger | 0738634 | 2012-02-09 16:37:17 -0600 | [diff] [blame] | 45 | _init_listhead(&psta->asoc_list); |
Larry Finger | 2865d42 | 2010-08-20 10:15:30 -0500 | [diff] [blame] | 46 | _init_listhead(&psta->auth_list); |
Larry Finger | 2865d42 | 2010-08-20 10:15:30 -0500 | [diff] [blame] | 47 | } |
| 48 | |
| 49 | u32 _r8712_init_sta_priv(struct sta_priv *pstapriv) |
| 50 | { |
| 51 | struct sta_info *psta; |
| 52 | s32 i; |
| 53 | |
| 54 | pstapriv->pallocated_stainfo_buf = _malloc(sizeof(struct sta_info) * |
| 55 | NUM_STA + 4); |
| 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); |
| 68 | _init_listhead(&(pstapriv->sta_hash[i])); |
| 69 | list_insert_tail(&psta->list, |
| 70 | get_list_head(&pstapriv->free_sta_queue)); |
| 71 | psta++; |
| 72 | } |
Larry Finger | 2865d42 | 2010-08-20 10:15:30 -0500 | [diff] [blame] | 73 | _init_listhead(&pstapriv->asoc_list); |
| 74 | _init_listhead(&pstapriv->auth_list); |
Larry Finger | 2865d42 | 2010-08-20 10:15:30 -0500 | [diff] [blame] | 75 | return _SUCCESS; |
| 76 | } |
| 77 | |
| 78 | /* this function is used to free the memory of lock || sema for all stainfos */ |
| 79 | static void mfree_all_stainfo(struct sta_priv *pstapriv) |
| 80 | { |
| 81 | unsigned long irqL; |
| 82 | struct list_head *plist, *phead; |
| 83 | struct sta_info *psta = NULL; |
| 84 | |
| 85 | spin_lock_irqsave(&pstapriv->sta_hash_lock, irqL); |
| 86 | phead = get_list_head(&pstapriv->free_sta_queue); |
| 87 | plist = get_next(phead); |
| 88 | while ((end_of_queue_search(phead, plist)) == false) { |
| 89 | psta = LIST_CONTAINOR(plist, struct sta_info, list); |
| 90 | plist = get_next(plist); |
| 91 | } |
| 92 | |
| 93 | spin_unlock_irqrestore(&pstapriv->sta_hash_lock, irqL); |
| 94 | } |
| 95 | |
| 96 | |
| 97 | static void mfree_sta_priv_lock(struct sta_priv *pstapriv) |
| 98 | { |
| 99 | mfree_all_stainfo(pstapriv); /* be done before free sta_hash_lock */ |
| 100 | } |
| 101 | |
| 102 | u32 _r8712_free_sta_priv(struct sta_priv *pstapriv) |
| 103 | { |
| 104 | if (pstapriv) { |
| 105 | mfree_sta_priv_lock(pstapriv); |
| 106 | kfree(pstapriv->pallocated_stainfo_buf); |
| 107 | } |
| 108 | return _SUCCESS; |
| 109 | } |
| 110 | |
| 111 | struct sta_info *r8712_alloc_stainfo(struct sta_priv *pstapriv, u8 *hwaddr) |
| 112 | { |
| 113 | uint tmp_aid; |
| 114 | s32 index; |
| 115 | struct list_head *phash_list; |
| 116 | struct sta_info *psta; |
| 117 | struct __queue *pfree_sta_queue; |
| 118 | struct recv_reorder_ctrl *preorder_ctrl; |
| 119 | int i = 0; |
| 120 | u16 wRxSeqInitialValue = 0xffff; |
| 121 | unsigned long flags; |
| 122 | |
| 123 | pfree_sta_queue = &pstapriv->free_sta_queue; |
| 124 | spin_lock_irqsave(&(pfree_sta_queue->lock), flags); |
| 125 | if (_queue_empty(pfree_sta_queue) == true) |
| 126 | psta = NULL; |
| 127 | else { |
| 128 | psta = LIST_CONTAINOR(get_next(&pfree_sta_queue->queue), |
| 129 | struct sta_info, list); |
| 130 | list_delete(&(psta->list)); |
| 131 | tmp_aid = psta->aid; |
| 132 | _init_stainfo(psta); |
| 133 | memcpy(psta->hwaddr, hwaddr, ETH_ALEN); |
| 134 | index = wifi_mac_hash(hwaddr); |
| 135 | if (index >= NUM_STA) { |
| 136 | psta = NULL; |
| 137 | goto exit; |
| 138 | } |
| 139 | phash_list = &(pstapriv->sta_hash[index]); |
| 140 | list_insert_tail(&psta->hash_list, phash_list); |
| 141 | pstapriv->asoc_sta_count++ ; |
| 142 | |
| 143 | /* For the SMC router, the sequence number of first packet of WPS handshake |
| 144 | * will be 0. In this case, this packet will be dropped by recv_decache function |
| 145 | * if we use the 0x00 as the default value for tid_rxseq variable. So, we |
| 146 | * initialize the tid_rxseq variable as the 0xffff. |
| 147 | */ |
| 148 | for (i = 0; i < 16; i++) |
| 149 | memcpy(&psta->sta_recvpriv.rxcache.tid_rxseq[i], |
| 150 | &wRxSeqInitialValue, 2); |
| 151 | /* for A-MPDU Rx reordering buffer control */ |
| 152 | for (i = 0; i < 16 ; i++) { |
| 153 | preorder_ctrl = &psta->recvreorder_ctrl[i]; |
| 154 | preorder_ctrl->padapter = pstapriv->padapter; |
| 155 | preorder_ctrl->indicate_seq = 0xffff; |
| 156 | preorder_ctrl->wend_b = 0xffff; |
| 157 | preorder_ctrl->wsize_b = 64; |
| 158 | _init_queue(&preorder_ctrl->pending_recvframe_queue); |
| 159 | r8712_init_recv_timer(preorder_ctrl); |
| 160 | } |
| 161 | } |
| 162 | exit: |
| 163 | spin_unlock_irqrestore(&(pfree_sta_queue->lock), flags); |
| 164 | return psta; |
| 165 | } |
| 166 | |
| 167 | /* using pstapriv->sta_hash_lock to protect */ |
| 168 | void r8712_free_stainfo(struct _adapter *padapter, struct sta_info *psta) |
| 169 | { |
| 170 | int i; |
| 171 | unsigned long irqL0; |
| 172 | struct __queue *pfree_sta_queue; |
| 173 | struct recv_reorder_ctrl *preorder_ctrl; |
| 174 | struct sta_xmit_priv *pstaxmitpriv; |
| 175 | struct xmit_priv *pxmitpriv = &padapter->xmitpriv; |
| 176 | struct sta_priv *pstapriv = &padapter->stapriv; |
| 177 | |
| 178 | if (psta == NULL) |
| 179 | return; |
| 180 | pfree_sta_queue = &pstapriv->free_sta_queue; |
| 181 | pstaxmitpriv = &psta->sta_xmitpriv; |
| 182 | spin_lock_irqsave(&(pxmitpriv->vo_pending.lock), irqL0); |
| 183 | r8712_free_xmitframe_queue(pxmitpriv, &pstaxmitpriv->vo_q.sta_pending); |
| 184 | list_delete(&(pstaxmitpriv->vo_q.tx_pending)); |
| 185 | spin_unlock_irqrestore(&(pxmitpriv->vo_pending.lock), irqL0); |
| 186 | spin_lock_irqsave(&(pxmitpriv->vi_pending.lock), irqL0); |
| 187 | r8712_free_xmitframe_queue(pxmitpriv, &pstaxmitpriv->vi_q.sta_pending); |
| 188 | list_delete(&(pstaxmitpriv->vi_q.tx_pending)); |
| 189 | spin_unlock_irqrestore(&(pxmitpriv->vi_pending.lock), irqL0); |
| 190 | spin_lock_irqsave(&(pxmitpriv->bk_pending.lock), irqL0); |
| 191 | r8712_free_xmitframe_queue(pxmitpriv, &pstaxmitpriv->bk_q.sta_pending); |
| 192 | list_delete(&(pstaxmitpriv->bk_q.tx_pending)); |
| 193 | spin_unlock_irqrestore(&(pxmitpriv->bk_pending.lock), irqL0); |
| 194 | spin_lock_irqsave(&(pxmitpriv->be_pending.lock), irqL0); |
| 195 | r8712_free_xmitframe_queue(pxmitpriv, &pstaxmitpriv->be_q.sta_pending); |
| 196 | list_delete(&(pstaxmitpriv->be_q.tx_pending)); |
| 197 | spin_unlock_irqrestore(&(pxmitpriv->be_pending.lock), irqL0); |
| 198 | list_delete(&psta->hash_list); |
| 199 | pstapriv->asoc_sta_count--; |
| 200 | /* re-init sta_info; 20061114 */ |
| 201 | _r8712_init_sta_xmit_priv(&psta->sta_xmitpriv); |
| 202 | _r8712_init_sta_recv_priv(&psta->sta_recvpriv); |
| 203 | /* for A-MPDU Rx reordering buffer control, |
| 204 | * cancel reordering_ctrl_timer */ |
| 205 | for (i = 0; i < 16; i++) { |
| 206 | preorder_ctrl = &psta->recvreorder_ctrl[i]; |
| 207 | _cancel_timer_ex(&preorder_ctrl->reordering_ctrl_timer); |
| 208 | } |
| 209 | spin_lock(&(pfree_sta_queue->lock)); |
| 210 | /* insert into free_sta_queue; 20061114 */ |
| 211 | list_insert_tail(&psta->list, get_list_head(pfree_sta_queue)); |
| 212 | spin_unlock(&(pfree_sta_queue->lock)); |
| 213 | } |
| 214 | |
| 215 | /* free all stainfo which in sta_hash[all] */ |
| 216 | void r8712_free_all_stainfo(struct _adapter *padapter) |
| 217 | { |
| 218 | unsigned long irqL; |
| 219 | struct list_head *plist, *phead; |
| 220 | s32 index; |
| 221 | struct sta_info *psta = NULL; |
| 222 | struct sta_priv *pstapriv = &padapter->stapriv; |
| 223 | struct sta_info *pbcmc_stainfo = r8712_get_bcmc_stainfo(padapter); |
| 224 | |
| 225 | if (pstapriv->asoc_sta_count == 1) |
| 226 | return; |
| 227 | spin_lock_irqsave(&pstapriv->sta_hash_lock, irqL); |
| 228 | for (index = 0; index < NUM_STA; index++) { |
| 229 | phead = &(pstapriv->sta_hash[index]); |
| 230 | plist = get_next(phead); |
| 231 | while ((end_of_queue_search(phead, plist)) == false) { |
| 232 | psta = LIST_CONTAINOR(plist, |
| 233 | struct sta_info, hash_list); |
| 234 | plist = get_next(plist); |
| 235 | if (pbcmc_stainfo != psta) |
| 236 | r8712_free_stainfo(padapter , psta); |
| 237 | } |
| 238 | } |
| 239 | spin_unlock_irqrestore(&pstapriv->sta_hash_lock, irqL); |
| 240 | } |
| 241 | |
| 242 | /* any station allocated can be searched by hash list */ |
| 243 | struct sta_info *r8712_get_stainfo(struct sta_priv *pstapriv, u8 *hwaddr) |
| 244 | { |
| 245 | unsigned long irqL; |
| 246 | struct list_head *plist, *phead; |
| 247 | struct sta_info *psta = NULL; |
| 248 | u32 index; |
| 249 | |
| 250 | if (hwaddr == NULL) |
| 251 | return NULL; |
| 252 | index = wifi_mac_hash(hwaddr); |
| 253 | spin_lock_irqsave(&pstapriv->sta_hash_lock, irqL); |
| 254 | phead = &(pstapriv->sta_hash[index]); |
| 255 | plist = get_next(phead); |
| 256 | while ((end_of_queue_search(phead, plist)) == false) { |
| 257 | psta = LIST_CONTAINOR(plist, struct sta_info, hash_list); |
| 258 | if ((!memcmp(psta->hwaddr, hwaddr, ETH_ALEN))) { |
| 259 | /* if found the matched address */ |
| 260 | break; |
| 261 | } |
| 262 | psta = NULL; |
| 263 | plist = get_next(plist); |
| 264 | } |
| 265 | spin_unlock_irqrestore(&pstapriv->sta_hash_lock, irqL); |
| 266 | return psta; |
| 267 | } |
| 268 | |
| 269 | void r8712_init_bcmc_stainfo(struct _adapter *padapter) |
| 270 | { |
| 271 | struct sta_info *psta; |
| 272 | struct tx_servq *ptxservq; |
| 273 | unsigned char bcast_addr[6] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff}; |
| 274 | struct sta_priv *pstapriv = &padapter->stapriv; |
| 275 | |
| 276 | psta = r8712_alloc_stainfo(pstapriv, bcast_addr); |
| 277 | if (psta == NULL) |
| 278 | return; |
| 279 | ptxservq = &(psta->sta_xmitpriv.be_q); |
| 280 | } |
| 281 | |
| 282 | struct sta_info *r8712_get_bcmc_stainfo(struct _adapter *padapter) |
| 283 | { |
| 284 | struct sta_info *psta; |
| 285 | struct sta_priv *pstapriv = &padapter->stapriv; |
| 286 | u8 bc_addr[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff}; |
| 287 | |
| 288 | psta = r8712_get_stainfo(pstapriv, bc_addr); |
| 289 | return psta; |
| 290 | } |
| 291 | |
| 292 | |
| 293 | u8 r8712_access_ctrl(struct wlan_acl_pool *pacl_list, u8 *mac_addr) |
| 294 | { |
| 295 | return true; |
| 296 | } |