Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wirel...
[~shefty/rdma-dev.git] / drivers / net / wireless / mwifiex / 11n.c
1 /*
2  * Marvell Wireless LAN device driver: 802.11n
3  *
4  * Copyright (C) 2011, Marvell International Ltd.
5  *
6  * This software file (the "File") is distributed by Marvell International
7  * Ltd. under the terms of the GNU General Public License Version 2, June 1991
8  * (the "License").  You may use, redistribute and/or modify this File in
9  * accordance with the terms and conditions of the License, a copy of which
10  * is available by writing to the Free Software Foundation, Inc.,
11  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
12  * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
13  *
14  * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
15  * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
16  * ARE EXPRESSLY DISCLAIMED.  The License provides additional details about
17  * this warranty disclaimer.
18  */
19
20 #include "decl.h"
21 #include "ioctl.h"
22 #include "util.h"
23 #include "fw.h"
24 #include "main.h"
25 #include "wmm.h"
26 #include "11n.h"
27
28 /*
29  * Fills HT capability information field, AMPDU Parameters field, HT extended
30  * capability field, and supported MCS set fields.
31  *
32  * HT capability information field, AMPDU Parameters field, supported MCS set
33  * fields are retrieved from cfg80211 stack
34  *
35  * RD responder bit to set to clear in the extended capability header.
36  */
37 void
38 mwifiex_fill_cap_info(struct mwifiex_private *priv, u8 radio_type,
39                       struct mwifiex_ie_types_htcap *ht_cap)
40 {
41         uint16_t ht_ext_cap = le16_to_cpu(ht_cap->ht_cap.extended_ht_cap_info);
42         struct ieee80211_supported_band *sband =
43                                         priv->wdev->wiphy->bands[radio_type];
44
45         ht_cap->ht_cap.ampdu_params_info =
46                 (sband->ht_cap.ampdu_factor &
47                  IEEE80211_HT_AMPDU_PARM_FACTOR) |
48                 ((sband->ht_cap.ampdu_density <<
49                  IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT) &
50                  IEEE80211_HT_AMPDU_PARM_DENSITY);
51
52         memcpy((u8 *) &ht_cap->ht_cap.mcs, &sband->ht_cap.mcs,
53                sizeof(sband->ht_cap.mcs));
54
55         if (priv->bss_mode == NL80211_IFTYPE_STATION ||
56             (sband->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 &&
57              (priv->adapter->sec_chan_offset !=
58                                         IEEE80211_HT_PARAM_CHA_SEC_NONE)))
59                 /* Set MCS32 for infra mode or ad-hoc mode with 40MHz support */
60                 SETHT_MCS32(ht_cap->ht_cap.mcs.rx_mask);
61
62         /* Clear RD responder bit */
63         ht_ext_cap &= ~IEEE80211_HT_EXT_CAP_RD_RESPONDER;
64
65         ht_cap->ht_cap.cap_info = cpu_to_le16(sband->ht_cap.cap);
66         ht_cap->ht_cap.extended_ht_cap_info = cpu_to_le16(ht_ext_cap);
67 }
68
69 /*
70  * This function returns the pointer to an entry in BA Stream
71  * table which matches the requested BA status.
72  */
73 static struct mwifiex_tx_ba_stream_tbl *
74 mwifiex_get_ba_status(struct mwifiex_private *priv,
75                       enum mwifiex_ba_status ba_status)
76 {
77         struct mwifiex_tx_ba_stream_tbl *tx_ba_tsr_tbl;
78         unsigned long flags;
79
80         spin_lock_irqsave(&priv->tx_ba_stream_tbl_lock, flags);
81         list_for_each_entry(tx_ba_tsr_tbl, &priv->tx_ba_stream_tbl_ptr, list) {
82                 if (tx_ba_tsr_tbl->ba_status == ba_status) {
83                         spin_unlock_irqrestore(&priv->tx_ba_stream_tbl_lock,
84                                                flags);
85                         return tx_ba_tsr_tbl;
86                 }
87         }
88         spin_unlock_irqrestore(&priv->tx_ba_stream_tbl_lock, flags);
89         return NULL;
90 }
91
92 /*
93  * This function handles the command response of delete a block
94  * ack request.
95  *
96  * The function checks the response success status and takes action
97  * accordingly (send an add BA request in case of success, or recreate
98  * the deleted stream in case of failure, if the add BA was also
99  * initiated by us).
100  */
101 int mwifiex_ret_11n_delba(struct mwifiex_private *priv,
102                           struct host_cmd_ds_command *resp)
103 {
104         int tid;
105         struct mwifiex_tx_ba_stream_tbl *tx_ba_tbl;
106         struct host_cmd_ds_11n_delba *del_ba = &resp->params.del_ba;
107         uint16_t del_ba_param_set = le16_to_cpu(del_ba->del_ba_param_set);
108
109         tid = del_ba_param_set >> DELBA_TID_POS;
110         if (del_ba->del_result == BA_RESULT_SUCCESS) {
111                 mwifiex_del_ba_tbl(priv, tid, del_ba->peer_mac_addr,
112                                    TYPE_DELBA_SENT,
113                                    INITIATOR_BIT(del_ba_param_set));
114
115                 tx_ba_tbl = mwifiex_get_ba_status(priv, BA_SETUP_INPROGRESS);
116                 if (tx_ba_tbl)
117                         mwifiex_send_addba(priv, tx_ba_tbl->tid,
118                                            tx_ba_tbl->ra);
119         } else { /*
120                   * In case of failure, recreate the deleted stream in case
121                   * we initiated the ADDBA
122                   */
123                 if (!INITIATOR_BIT(del_ba_param_set))
124                         return 0;
125
126                 mwifiex_create_ba_tbl(priv, del_ba->peer_mac_addr, tid,
127                                       BA_SETUP_INPROGRESS);
128
129                 tx_ba_tbl = mwifiex_get_ba_status(priv, BA_SETUP_INPROGRESS);
130
131                 if (tx_ba_tbl)
132                         mwifiex_del_ba_tbl(priv, tx_ba_tbl->tid, tx_ba_tbl->ra,
133                                            TYPE_DELBA_SENT, true);
134         }
135
136         return 0;
137 }
138
139 /*
140  * This function handles the command response of add a block
141  * ack request.
142  *
143  * Handling includes changing the header fields to CPU formats, checking
144  * the response success status and taking actions accordingly (delete the
145  * BA stream table in case of failure).
146  */
147 int mwifiex_ret_11n_addba_req(struct mwifiex_private *priv,
148                               struct host_cmd_ds_command *resp)
149 {
150         int tid;
151         struct host_cmd_ds_11n_addba_rsp *add_ba_rsp = &resp->params.add_ba_rsp;
152         struct mwifiex_tx_ba_stream_tbl *tx_ba_tbl;
153
154         add_ba_rsp->ssn = cpu_to_le16((le16_to_cpu(add_ba_rsp->ssn))
155                         & SSN_MASK);
156
157         tid = (le16_to_cpu(add_ba_rsp->block_ack_param_set)
158                 & IEEE80211_ADDBA_PARAM_TID_MASK)
159                 >> BLOCKACKPARAM_TID_POS;
160         if (le16_to_cpu(add_ba_rsp->status_code) == BA_RESULT_SUCCESS) {
161                 tx_ba_tbl = mwifiex_get_ba_tbl(priv, tid,
162                                                 add_ba_rsp->peer_mac_addr);
163                 if (tx_ba_tbl) {
164                         dev_dbg(priv->adapter->dev, "info: BA stream complete\n");
165                         tx_ba_tbl->ba_status = BA_SETUP_COMPLETE;
166                 } else {
167                         dev_err(priv->adapter->dev, "BA stream not created\n");
168                 }
169         } else {
170                 mwifiex_del_ba_tbl(priv, tid, add_ba_rsp->peer_mac_addr,
171                                    TYPE_DELBA_SENT, true);
172                 if (add_ba_rsp->add_rsp_result != BA_RESULT_TIMEOUT)
173                         priv->aggr_prio_tbl[tid].ampdu_ap =
174                                 BA_STREAM_NOT_ALLOWED;
175         }
176
177         return 0;
178 }
179
180 /*
181  * This function prepares command of reconfigure Tx buffer.
182  *
183  * Preparation includes -
184  *      - Setting command ID, action and proper size
185  *      - Setting Tx buffer size (for SET only)
186  *      - Ensuring correct endian-ness
187  */
188 int mwifiex_cmd_recfg_tx_buf(struct mwifiex_private *priv,
189                              struct host_cmd_ds_command *cmd, int cmd_action,
190                              u16 *buf_size)
191 {
192         struct host_cmd_ds_txbuf_cfg *tx_buf = &cmd->params.tx_buf;
193         u16 action = (u16) cmd_action;
194
195         cmd->command = cpu_to_le16(HostCmd_CMD_RECONFIGURE_TX_BUFF);
196         cmd->size =
197                 cpu_to_le16(sizeof(struct host_cmd_ds_txbuf_cfg) + S_DS_GEN);
198         tx_buf->action = cpu_to_le16(action);
199         switch (action) {
200         case HostCmd_ACT_GEN_SET:
201                 dev_dbg(priv->adapter->dev, "cmd: set tx_buf=%d\n", *buf_size);
202                 tx_buf->buff_size = cpu_to_le16(*buf_size);
203                 break;
204         case HostCmd_ACT_GEN_GET:
205         default:
206                 tx_buf->buff_size = 0;
207                 break;
208         }
209         return 0;
210 }
211
212 /*
213  * This function prepares command of AMSDU aggregation control.
214  *
215  * Preparation includes -
216  *      - Setting command ID, action and proper size
217  *      - Setting AMSDU control parameters (for SET only)
218  *      - Ensuring correct endian-ness
219  */
220 int mwifiex_cmd_amsdu_aggr_ctrl(struct host_cmd_ds_command *cmd,
221                                 int cmd_action,
222                                 struct mwifiex_ds_11n_amsdu_aggr_ctrl *aa_ctrl)
223 {
224         struct host_cmd_ds_amsdu_aggr_ctrl *amsdu_ctrl =
225                 &cmd->params.amsdu_aggr_ctrl;
226         u16 action = (u16) cmd_action;
227
228         cmd->command = cpu_to_le16(HostCmd_CMD_AMSDU_AGGR_CTRL);
229         cmd->size = cpu_to_le16(sizeof(struct host_cmd_ds_amsdu_aggr_ctrl)
230                                 + S_DS_GEN);
231         amsdu_ctrl->action = cpu_to_le16(action);
232         switch (action) {
233         case HostCmd_ACT_GEN_SET:
234                 amsdu_ctrl->enable = cpu_to_le16(aa_ctrl->enable);
235                 amsdu_ctrl->curr_buf_size = 0;
236                 break;
237         case HostCmd_ACT_GEN_GET:
238         default:
239                 amsdu_ctrl->curr_buf_size = 0;
240                 break;
241         }
242         return 0;
243 }
244
245 /*
246  * This function prepares 11n configuration command.
247  *
248  * Preparation includes -
249  *      - Setting command ID, action and proper size
250  *      - Setting HT Tx capability and HT Tx information fields
251  *      - Ensuring correct endian-ness
252  */
253 int mwifiex_cmd_11n_cfg(struct mwifiex_private *priv,
254                         struct host_cmd_ds_command *cmd, u16 cmd_action,
255                         struct mwifiex_ds_11n_tx_cfg *txcfg)
256 {
257         struct host_cmd_ds_11n_cfg *htcfg = &cmd->params.htcfg;
258
259         cmd->command = cpu_to_le16(HostCmd_CMD_11N_CFG);
260         cmd->size = cpu_to_le16(sizeof(struct host_cmd_ds_11n_cfg) + S_DS_GEN);
261         htcfg->action = cpu_to_le16(cmd_action);
262         htcfg->ht_tx_cap = cpu_to_le16(txcfg->tx_htcap);
263         htcfg->ht_tx_info = cpu_to_le16(txcfg->tx_htinfo);
264
265         if (priv->adapter->is_hw_11ac_capable)
266                 htcfg->misc_config = cpu_to_le16(txcfg->misc_config);
267
268         return 0;
269 }
270
271 /*
272  * This function appends an 11n TLV to a buffer.
273  *
274  * Buffer allocation is responsibility of the calling
275  * function. No size validation is made here.
276  *
277  * The function fills up the following sections, if applicable -
278  *      - HT capability IE
279  *      - HT information IE (with channel list)
280  *      - 20/40 BSS Coexistence IE
281  *      - HT Extended Capabilities IE
282  */
283 int
284 mwifiex_cmd_append_11n_tlv(struct mwifiex_private *priv,
285                            struct mwifiex_bssdescriptor *bss_desc,
286                            u8 **buffer)
287 {
288         struct mwifiex_ie_types_htcap *ht_cap;
289         struct mwifiex_ie_types_htinfo *ht_info;
290         struct mwifiex_ie_types_chan_list_param_set *chan_list;
291         struct mwifiex_ie_types_2040bssco *bss_co_2040;
292         struct mwifiex_ie_types_extcap *ext_cap;
293         int ret_len = 0;
294         struct ieee80211_supported_band *sband;
295         u8 radio_type;
296
297         if (!buffer || !*buffer)
298                 return ret_len;
299
300         radio_type = mwifiex_band_to_radio_type((u8) bss_desc->bss_band);
301         sband = priv->wdev->wiphy->bands[radio_type];
302
303         if (bss_desc->bcn_ht_cap) {
304                 ht_cap = (struct mwifiex_ie_types_htcap *) *buffer;
305                 memset(ht_cap, 0, sizeof(struct mwifiex_ie_types_htcap));
306                 ht_cap->header.type = cpu_to_le16(WLAN_EID_HT_CAPABILITY);
307                 ht_cap->header.len =
308                                 cpu_to_le16(sizeof(struct ieee80211_ht_cap));
309                 memcpy((u8 *) ht_cap + sizeof(struct mwifiex_ie_types_header),
310                        (u8 *) bss_desc->bcn_ht_cap +
311                        sizeof(struct ieee_types_header),
312                        le16_to_cpu(ht_cap->header.len));
313
314                 mwifiex_fill_cap_info(priv, radio_type, ht_cap);
315
316                 *buffer += sizeof(struct mwifiex_ie_types_htcap);
317                 ret_len += sizeof(struct mwifiex_ie_types_htcap);
318         }
319
320         if (bss_desc->bcn_ht_oper) {
321                 if (priv->bss_mode == NL80211_IFTYPE_ADHOC) {
322                         ht_info = (struct mwifiex_ie_types_htinfo *) *buffer;
323                         memset(ht_info, 0,
324                                sizeof(struct mwifiex_ie_types_htinfo));
325                         ht_info->header.type =
326                                         cpu_to_le16(WLAN_EID_HT_OPERATION);
327                         ht_info->header.len =
328                                 cpu_to_le16(
329                                         sizeof(struct ieee80211_ht_operation));
330
331                         memcpy((u8 *) ht_info +
332                                sizeof(struct mwifiex_ie_types_header),
333                                (u8 *) bss_desc->bcn_ht_oper +
334                                sizeof(struct ieee_types_header),
335                                le16_to_cpu(ht_info->header.len));
336
337                         if (!(sband->ht_cap.cap &
338                                         IEEE80211_HT_CAP_SUP_WIDTH_20_40))
339                                 ht_info->ht_oper.ht_param &=
340                                         ~(IEEE80211_HT_PARAM_CHAN_WIDTH_ANY |
341                                         IEEE80211_HT_PARAM_CHA_SEC_OFFSET);
342
343                         *buffer += sizeof(struct mwifiex_ie_types_htinfo);
344                         ret_len += sizeof(struct mwifiex_ie_types_htinfo);
345                 }
346
347                 chan_list =
348                         (struct mwifiex_ie_types_chan_list_param_set *) *buffer;
349                 memset(chan_list, 0,
350                        sizeof(struct mwifiex_ie_types_chan_list_param_set));
351                 chan_list->header.type = cpu_to_le16(TLV_TYPE_CHANLIST);
352                 chan_list->header.len = cpu_to_le16(
353                         sizeof(struct mwifiex_ie_types_chan_list_param_set) -
354                         sizeof(struct mwifiex_ie_types_header));
355                 chan_list->chan_scan_param[0].chan_number =
356                         bss_desc->bcn_ht_oper->primary_chan;
357                 chan_list->chan_scan_param[0].radio_type =
358                         mwifiex_band_to_radio_type((u8) bss_desc->bss_band);
359
360                 if (sband->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 &&
361                     bss_desc->bcn_ht_oper->ht_param &
362                     IEEE80211_HT_PARAM_CHAN_WIDTH_ANY)
363                         SET_SECONDARYCHAN(chan_list->chan_scan_param[0].
364                                           radio_type,
365                                           (bss_desc->bcn_ht_oper->ht_param &
366                                           IEEE80211_HT_PARAM_CHA_SEC_OFFSET));
367
368                 *buffer += sizeof(struct mwifiex_ie_types_chan_list_param_set);
369                 ret_len += sizeof(struct mwifiex_ie_types_chan_list_param_set);
370         }
371
372         if (bss_desc->bcn_bss_co_2040) {
373                 bss_co_2040 = (struct mwifiex_ie_types_2040bssco *) *buffer;
374                 memset(bss_co_2040, 0,
375                        sizeof(struct mwifiex_ie_types_2040bssco));
376                 bss_co_2040->header.type = cpu_to_le16(WLAN_EID_BSS_COEX_2040);
377                 bss_co_2040->header.len =
378                        cpu_to_le16(sizeof(bss_co_2040->bss_co_2040));
379
380                 memcpy((u8 *) bss_co_2040 +
381                        sizeof(struct mwifiex_ie_types_header),
382                        bss_desc->bcn_bss_co_2040 +
383                        sizeof(struct ieee_types_header),
384                        le16_to_cpu(bss_co_2040->header.len));
385
386                 *buffer += sizeof(struct mwifiex_ie_types_2040bssco);
387                 ret_len += sizeof(struct mwifiex_ie_types_2040bssco);
388         }
389
390         if (bss_desc->bcn_ext_cap) {
391                 ext_cap = (struct mwifiex_ie_types_extcap *) *buffer;
392                 memset(ext_cap, 0, sizeof(struct mwifiex_ie_types_extcap));
393                 ext_cap->header.type = cpu_to_le16(WLAN_EID_EXT_CAPABILITY);
394                 ext_cap->header.len = cpu_to_le16(sizeof(ext_cap->ext_cap));
395
396                 memcpy((u8 *)ext_cap + sizeof(struct mwifiex_ie_types_header),
397                        bss_desc->bcn_ext_cap + sizeof(struct ieee_types_header),
398                        le16_to_cpu(ext_cap->header.len));
399
400                 *buffer += sizeof(struct mwifiex_ie_types_extcap);
401                 ret_len += sizeof(struct mwifiex_ie_types_extcap);
402         }
403
404         return ret_len;
405 }
406
407 /*
408  * This function checks if the given pointer is valid entry of
409  * Tx BA Stream table.
410  */
411 static int mwifiex_is_tx_ba_stream_ptr_valid(struct mwifiex_private *priv,
412                                 struct mwifiex_tx_ba_stream_tbl *tx_tbl_ptr)
413 {
414         struct mwifiex_tx_ba_stream_tbl *tx_ba_tsr_tbl;
415
416         list_for_each_entry(tx_ba_tsr_tbl, &priv->tx_ba_stream_tbl_ptr, list) {
417                 if (tx_ba_tsr_tbl == tx_tbl_ptr)
418                         return true;
419         }
420
421         return false;
422 }
423
424 /*
425  * This function deletes the given entry in Tx BA Stream table.
426  *
427  * The function also performs a validity check on the supplied
428  * pointer before trying to delete.
429  */
430 void mwifiex_11n_delete_tx_ba_stream_tbl_entry(struct mwifiex_private *priv,
431                                 struct mwifiex_tx_ba_stream_tbl *tx_ba_tsr_tbl)
432 {
433         if (!tx_ba_tsr_tbl &&
434             mwifiex_is_tx_ba_stream_ptr_valid(priv, tx_ba_tsr_tbl))
435                 return;
436
437         dev_dbg(priv->adapter->dev, "info: tx_ba_tsr_tbl %p\n", tx_ba_tsr_tbl);
438
439         list_del(&tx_ba_tsr_tbl->list);
440
441         kfree(tx_ba_tsr_tbl);
442 }
443
444 /*
445  * This function deletes all the entries in Tx BA Stream table.
446  */
447 void mwifiex_11n_delete_all_tx_ba_stream_tbl(struct mwifiex_private *priv)
448 {
449         int i;
450         struct mwifiex_tx_ba_stream_tbl *del_tbl_ptr, *tmp_node;
451         unsigned long flags;
452
453         spin_lock_irqsave(&priv->tx_ba_stream_tbl_lock, flags);
454         list_for_each_entry_safe(del_tbl_ptr, tmp_node,
455                                  &priv->tx_ba_stream_tbl_ptr, list)
456                 mwifiex_11n_delete_tx_ba_stream_tbl_entry(priv, del_tbl_ptr);
457         spin_unlock_irqrestore(&priv->tx_ba_stream_tbl_lock, flags);
458
459         INIT_LIST_HEAD(&priv->tx_ba_stream_tbl_ptr);
460
461         for (i = 0; i < MAX_NUM_TID; ++i)
462                 priv->aggr_prio_tbl[i].ampdu_ap =
463                         priv->aggr_prio_tbl[i].ampdu_user;
464 }
465
466 /*
467  * This function returns the pointer to an entry in BA Stream
468  * table which matches the given RA/TID pair.
469  */
470 struct mwifiex_tx_ba_stream_tbl *
471 mwifiex_get_ba_tbl(struct mwifiex_private *priv, int tid, u8 *ra)
472 {
473         struct mwifiex_tx_ba_stream_tbl *tx_ba_tsr_tbl;
474         unsigned long flags;
475
476         spin_lock_irqsave(&priv->tx_ba_stream_tbl_lock, flags);
477         list_for_each_entry(tx_ba_tsr_tbl, &priv->tx_ba_stream_tbl_ptr, list) {
478                 if (!memcmp(tx_ba_tsr_tbl->ra, ra, ETH_ALEN) &&
479                     tx_ba_tsr_tbl->tid == tid) {
480                         spin_unlock_irqrestore(&priv->tx_ba_stream_tbl_lock,
481                                                flags);
482                         return tx_ba_tsr_tbl;
483                 }
484         }
485         spin_unlock_irqrestore(&priv->tx_ba_stream_tbl_lock, flags);
486         return NULL;
487 }
488
489 /*
490  * This function creates an entry in Tx BA stream table for the
491  * given RA/TID pair.
492  */
493 void mwifiex_create_ba_tbl(struct mwifiex_private *priv, u8 *ra, int tid,
494                            enum mwifiex_ba_status ba_status)
495 {
496         struct mwifiex_tx_ba_stream_tbl *new_node;
497         unsigned long flags;
498
499         if (!mwifiex_get_ba_tbl(priv, tid, ra)) {
500                 new_node = kzalloc(sizeof(struct mwifiex_tx_ba_stream_tbl),
501                                    GFP_ATOMIC);
502                 if (!new_node)
503                         return;
504
505                 INIT_LIST_HEAD(&new_node->list);
506
507                 new_node->tid = tid;
508                 new_node->ba_status = ba_status;
509                 memcpy(new_node->ra, ra, ETH_ALEN);
510
511                 spin_lock_irqsave(&priv->tx_ba_stream_tbl_lock, flags);
512                 list_add_tail(&new_node->list, &priv->tx_ba_stream_tbl_ptr);
513                 spin_unlock_irqrestore(&priv->tx_ba_stream_tbl_lock, flags);
514         }
515 }
516
517 /*
518  * This function sends an add BA request to the given TID/RA pair.
519  */
520 int mwifiex_send_addba(struct mwifiex_private *priv, int tid, u8 *peer_mac)
521 {
522         struct host_cmd_ds_11n_addba_req add_ba_req;
523         static u8 dialog_tok;
524         int ret;
525
526         dev_dbg(priv->adapter->dev, "cmd: %s: tid %d\n", __func__, tid);
527
528         add_ba_req.block_ack_param_set = cpu_to_le16(
529                 (u16) ((tid << BLOCKACKPARAM_TID_POS) |
530                          (priv->add_ba_param.
531                           tx_win_size << BLOCKACKPARAM_WINSIZE_POS) |
532                          IMMEDIATE_BLOCK_ACK));
533         add_ba_req.block_ack_tmo = cpu_to_le16((u16)priv->add_ba_param.timeout);
534
535         ++dialog_tok;
536
537         if (dialog_tok == 0)
538                 dialog_tok = 1;
539
540         add_ba_req.dialog_token = dialog_tok;
541         memcpy(&add_ba_req.peer_mac_addr, peer_mac, ETH_ALEN);
542
543         /* We don't wait for the response of this command */
544         ret = mwifiex_send_cmd_async(priv, HostCmd_CMD_11N_ADDBA_REQ,
545                                      0, 0, &add_ba_req);
546
547         return ret;
548 }
549
550 /*
551  * This function sends a delete BA request to the given TID/RA pair.
552  */
553 int mwifiex_send_delba(struct mwifiex_private *priv, int tid, u8 *peer_mac,
554                        int initiator)
555 {
556         struct host_cmd_ds_11n_delba delba;
557         int ret;
558         uint16_t del_ba_param_set;
559
560         memset(&delba, 0, sizeof(delba));
561         delba.del_ba_param_set = cpu_to_le16(tid << DELBA_TID_POS);
562
563         del_ba_param_set = le16_to_cpu(delba.del_ba_param_set);
564         if (initiator)
565                 del_ba_param_set |= IEEE80211_DELBA_PARAM_INITIATOR_MASK;
566         else
567                 del_ba_param_set &= ~IEEE80211_DELBA_PARAM_INITIATOR_MASK;
568
569         memcpy(&delba.peer_mac_addr, peer_mac, ETH_ALEN);
570
571         /* We don't wait for the response of this command */
572         ret = mwifiex_send_cmd_async(priv, HostCmd_CMD_11N_DELBA,
573                                      HostCmd_ACT_GEN_SET, 0, &delba);
574
575         return ret;
576 }
577
578 /*
579  * This function handles the command response of a delete BA request.
580  */
581 void mwifiex_11n_delete_ba_stream(struct mwifiex_private *priv, u8 *del_ba)
582 {
583         struct host_cmd_ds_11n_delba *cmd_del_ba =
584                 (struct host_cmd_ds_11n_delba *) del_ba;
585         uint16_t del_ba_param_set = le16_to_cpu(cmd_del_ba->del_ba_param_set);
586         int tid;
587
588         tid = del_ba_param_set >> DELBA_TID_POS;
589
590         mwifiex_del_ba_tbl(priv, tid, cmd_del_ba->peer_mac_addr,
591                            TYPE_DELBA_RECEIVE, INITIATOR_BIT(del_ba_param_set));
592 }
593
594 /*
595  * This function retrieves the Rx reordering table.
596  */
597 int mwifiex_get_rx_reorder_tbl(struct mwifiex_private *priv,
598                                struct mwifiex_ds_rx_reorder_tbl *buf)
599 {
600         int i;
601         struct mwifiex_ds_rx_reorder_tbl *rx_reo_tbl = buf;
602         struct mwifiex_rx_reorder_tbl *rx_reorder_tbl_ptr;
603         int count = 0;
604         unsigned long flags;
605
606         spin_lock_irqsave(&priv->rx_reorder_tbl_lock, flags);
607         list_for_each_entry(rx_reorder_tbl_ptr, &priv->rx_reorder_tbl_ptr,
608                             list) {
609                 rx_reo_tbl->tid = (u16) rx_reorder_tbl_ptr->tid;
610                 memcpy(rx_reo_tbl->ta, rx_reorder_tbl_ptr->ta, ETH_ALEN);
611                 rx_reo_tbl->start_win = rx_reorder_tbl_ptr->start_win;
612                 rx_reo_tbl->win_size = rx_reorder_tbl_ptr->win_size;
613                 for (i = 0; i < rx_reorder_tbl_ptr->win_size; ++i) {
614                         if (rx_reorder_tbl_ptr->rx_reorder_ptr[i])
615                                 rx_reo_tbl->buffer[i] = true;
616                         else
617                                 rx_reo_tbl->buffer[i] = false;
618                 }
619                 rx_reo_tbl++;
620                 count++;
621
622                 if (count >= MWIFIEX_MAX_RX_BASTREAM_SUPPORTED)
623                         break;
624         }
625         spin_unlock_irqrestore(&priv->rx_reorder_tbl_lock, flags);
626
627         return count;
628 }
629
630 /*
631  * This function retrieves the Tx BA stream table.
632  */
633 int mwifiex_get_tx_ba_stream_tbl(struct mwifiex_private *priv,
634                                  struct mwifiex_ds_tx_ba_stream_tbl *buf)
635 {
636         struct mwifiex_tx_ba_stream_tbl *tx_ba_tsr_tbl;
637         struct mwifiex_ds_tx_ba_stream_tbl *rx_reo_tbl = buf;
638         int count = 0;
639         unsigned long flags;
640
641         spin_lock_irqsave(&priv->tx_ba_stream_tbl_lock, flags);
642         list_for_each_entry(tx_ba_tsr_tbl, &priv->tx_ba_stream_tbl_ptr, list) {
643                 rx_reo_tbl->tid = (u16) tx_ba_tsr_tbl->tid;
644                 dev_dbg(priv->adapter->dev, "data: %s tid=%d\n",
645                         __func__, rx_reo_tbl->tid);
646                 memcpy(rx_reo_tbl->ra, tx_ba_tsr_tbl->ra, ETH_ALEN);
647                 rx_reo_tbl++;
648                 count++;
649                 if (count >= MWIFIEX_MAX_TX_BASTREAM_SUPPORTED)
650                         break;
651         }
652         spin_unlock_irqrestore(&priv->tx_ba_stream_tbl_lock, flags);
653
654         return count;
655 }
656
657 /*
658  * This function retrieves the entry for specific tx BA stream table by RA and
659  * deletes it.
660  */
661 void mwifiex_del_tx_ba_stream_tbl_by_ra(struct mwifiex_private *priv, u8 *ra)
662 {
663         struct mwifiex_tx_ba_stream_tbl *tbl, *tmp;
664         unsigned long flags;
665
666         if (!ra)
667                 return;
668
669         spin_lock_irqsave(&priv->tx_ba_stream_tbl_lock, flags);
670         list_for_each_entry_safe(tbl, tmp, &priv->tx_ba_stream_tbl_ptr, list) {
671                 if (!memcmp(tbl->ra, ra, ETH_ALEN)) {
672                         spin_unlock_irqrestore(&priv->tx_ba_stream_tbl_lock,
673                                                flags);
674                         mwifiex_11n_delete_tx_ba_stream_tbl_entry(priv, tbl);
675                         spin_lock_irqsave(&priv->tx_ba_stream_tbl_lock, flags);
676                 }
677         }
678         spin_unlock_irqrestore(&priv->tx_ba_stream_tbl_lock, flags);
679
680         return;
681 }