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Merge tag 'chrome-platform-for-linus-4.13' of git://git.kernel.org/pub/scm/linux...
[linux/fpc-iii.git] / drivers / net / wireless / marvell / mwifiex / 11n.c
blob16c77c27f1b6022cc4e34d23704e421b1e64f77f
1 /*
2 * Marvell Wireless LAN device driver: 802.11n
3 *
4 * Copyright (C) 2011-2014, 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 int mwifiex_fill_cap_info(struct mwifiex_private *priv, u8 radio_type,
38 struct ieee80211_ht_cap *ht_cap)
39 {
40 uint16_t ht_ext_cap = le16_to_cpu(ht_cap->extended_ht_cap_info);
41 struct ieee80211_supported_band *sband =
42 priv->wdev.wiphy->bands[radio_type];
43
44 if (WARN_ON_ONCE(!sband)) {
45 mwifiex_dbg(priv->adapter, ERROR, "Invalid radio type!\n");
46 return -EINVAL;
47 }
48
49 ht_cap->ampdu_params_info =
50 (sband->ht_cap.ampdu_factor &
51 IEEE80211_HT_AMPDU_PARM_FACTOR) |
52 ((sband->ht_cap.ampdu_density <<
53 IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT) &
54 IEEE80211_HT_AMPDU_PARM_DENSITY);
55
56 memcpy((u8 *)&ht_cap->mcs, &sband->ht_cap.mcs,
57 sizeof(sband->ht_cap.mcs));
58
59 if (priv->bss_mode == NL80211_IFTYPE_STATION ||
60 (sband->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 &&
61 (priv->adapter->sec_chan_offset !=
62 IEEE80211_HT_PARAM_CHA_SEC_NONE)))
63 /* Set MCS32 for infra mode or ad-hoc mode with 40MHz support */
64 SETHT_MCS32(ht_cap->mcs.rx_mask);
65
66 /* Clear RD responder bit */
67 ht_ext_cap &= ~IEEE80211_HT_EXT_CAP_RD_RESPONDER;
68
69 ht_cap->cap_info = cpu_to_le16(sband->ht_cap.cap);
70 ht_cap->extended_ht_cap_info = cpu_to_le16(ht_ext_cap);
71
72 if (ISSUPP_BEAMFORMING(priv->adapter->hw_dot_11n_dev_cap))
73 ht_cap->tx_BF_cap_info = cpu_to_le32(MWIFIEX_DEF_11N_TX_BF_CAP);
74
75 return 0;
76 }
77
78 /*
79 * This function returns the pointer to an entry in BA Stream
80 * table which matches the requested BA status.
81 */
82 static struct mwifiex_tx_ba_stream_tbl *
83 mwifiex_get_ba_status(struct mwifiex_private *priv,
84 enum mwifiex_ba_status ba_status)
85 {
86 struct mwifiex_tx_ba_stream_tbl *tx_ba_tsr_tbl;
87 unsigned long flags;
88
89 spin_lock_irqsave(&priv->tx_ba_stream_tbl_lock, flags);
90 list_for_each_entry(tx_ba_tsr_tbl, &priv->tx_ba_stream_tbl_ptr, list) {
91 if (tx_ba_tsr_tbl->ba_status == ba_status) {
92 spin_unlock_irqrestore(&priv->tx_ba_stream_tbl_lock,
93 flags);
94 return tx_ba_tsr_tbl;
95 }
96 }
97 spin_unlock_irqrestore(&priv->tx_ba_stream_tbl_lock, flags);
98 return NULL;
99 }
100
101 /*
102 * This function handles the command response of delete a block
103 * ack request.
104 *
105 * The function checks the response success status and takes action
106 * accordingly (send an add BA request in case of success, or recreate
107 * the deleted stream in case of failure, if the add BA was also
108 * initiated by us).
109 */
110 int mwifiex_ret_11n_delba(struct mwifiex_private *priv,
111 struct host_cmd_ds_command *resp)
112 {
113 int tid;
114 struct mwifiex_tx_ba_stream_tbl *tx_ba_tbl;
115 struct host_cmd_ds_11n_delba *del_ba = &resp->params.del_ba;
116 uint16_t del_ba_param_set = le16_to_cpu(del_ba->del_ba_param_set);
117
118 tid = del_ba_param_set >> DELBA_TID_POS;
119 if (del_ba->del_result == BA_RESULT_SUCCESS) {
120 mwifiex_del_ba_tbl(priv, tid, del_ba->peer_mac_addr,
121 TYPE_DELBA_SENT,
122 INITIATOR_BIT(del_ba_param_set));
123
124 tx_ba_tbl = mwifiex_get_ba_status(priv, BA_SETUP_INPROGRESS);
125 if (tx_ba_tbl)
126 mwifiex_send_addba(priv, tx_ba_tbl->tid,
127 tx_ba_tbl->ra);
128 } else { /*
129 * In case of failure, recreate the deleted stream in case
130 * we initiated the ADDBA
131 */
132 if (!INITIATOR_BIT(del_ba_param_set))
133 return 0;
134
135 mwifiex_create_ba_tbl(priv, del_ba->peer_mac_addr, tid,
136 BA_SETUP_INPROGRESS);
137
138 tx_ba_tbl = mwifiex_get_ba_status(priv, BA_SETUP_INPROGRESS);
139
140 if (tx_ba_tbl)
141 mwifiex_del_ba_tbl(priv, tx_ba_tbl->tid, tx_ba_tbl->ra,
142 TYPE_DELBA_SENT, true);
143 }
144
145 return 0;
146 }
147
148 /*
149 * This function handles the command response of add a block
150 * ack request.
151 *
152 * Handling includes changing the header fields to CPU formats, checking
153 * the response success status and taking actions accordingly (delete the
154 * BA stream table in case of failure).
155 */
156 int mwifiex_ret_11n_addba_req(struct mwifiex_private *priv,
157 struct host_cmd_ds_command *resp)
158 {
159 int tid, tid_down;
160 struct host_cmd_ds_11n_addba_rsp *add_ba_rsp = &resp->params.add_ba_rsp;
161 struct mwifiex_tx_ba_stream_tbl *tx_ba_tbl;
162 struct mwifiex_ra_list_tbl *ra_list;
163 u16 block_ack_param_set = le16_to_cpu(add_ba_rsp->block_ack_param_set);
164
165 add_ba_rsp->ssn = cpu_to_le16((le16_to_cpu(add_ba_rsp->ssn))
166 & SSN_MASK);
167
168 tid = (block_ack_param_set & IEEE80211_ADDBA_PARAM_TID_MASK)
169 >> BLOCKACKPARAM_TID_POS;
170
171 tid_down = mwifiex_wmm_downgrade_tid(priv, tid);
172 ra_list = mwifiex_wmm_get_ralist_node(priv, tid_down, add_ba_rsp->
173 peer_mac_addr);
174 if (le16_to_cpu(add_ba_rsp->status_code) != BA_RESULT_SUCCESS) {
175 if (ra_list) {
176 ra_list->ba_status = BA_SETUP_NONE;
177 ra_list->amsdu_in_ampdu = false;
178 }
179 mwifiex_del_ba_tbl(priv, tid, add_ba_rsp->peer_mac_addr,
180 TYPE_DELBA_SENT, true);
181 if (add_ba_rsp->add_rsp_result != BA_RESULT_TIMEOUT)
182 priv->aggr_prio_tbl[tid].ampdu_ap =
183 BA_STREAM_NOT_ALLOWED;
184 return 0;
185 }
186
187 tx_ba_tbl = mwifiex_get_ba_tbl(priv, tid, add_ba_rsp->peer_mac_addr);
188 if (tx_ba_tbl) {
189 mwifiex_dbg(priv->adapter, EVENT, "info: BA stream complete\n");
190 tx_ba_tbl->ba_status = BA_SETUP_COMPLETE;
191 if ((block_ack_param_set & BLOCKACKPARAM_AMSDU_SUPP_MASK) &&
192 priv->add_ba_param.tx_amsdu &&
193 (priv->aggr_prio_tbl[tid].amsdu != BA_STREAM_NOT_ALLOWED))
194 tx_ba_tbl->amsdu = true;
195 else
196 tx_ba_tbl->amsdu = false;
197 if (ra_list) {
198 ra_list->amsdu_in_ampdu = tx_ba_tbl->amsdu;
199 ra_list->ba_status = BA_SETUP_COMPLETE;
200 }
201 } else {
202 mwifiex_dbg(priv->adapter, ERROR, "BA stream not created\n");
203 }
204
205 return 0;
206 }
207
208 /*
209 * This function prepares command of reconfigure Tx buffer.
210 *
211 * Preparation includes -
212 * - Setting command ID, action and proper size
213 * - Setting Tx buffer size (for SET only)
214 * - Ensuring correct endian-ness
215 */
216 int mwifiex_cmd_recfg_tx_buf(struct mwifiex_private *priv,
217 struct host_cmd_ds_command *cmd, int cmd_action,
218 u16 *buf_size)
219 {
220 struct host_cmd_ds_txbuf_cfg *tx_buf = &cmd->params.tx_buf;
221 u16 action = (u16) cmd_action;
222
223 cmd->command = cpu_to_le16(HostCmd_CMD_RECONFIGURE_TX_BUFF);
224 cmd->size =
225 cpu_to_le16(sizeof(struct host_cmd_ds_txbuf_cfg) + S_DS_GEN);
226 tx_buf->action = cpu_to_le16(action);
227 switch (action) {
228 case HostCmd_ACT_GEN_SET:
229 mwifiex_dbg(priv->adapter, CMD,
230 "cmd: set tx_buf=%d\n", *buf_size);
231 tx_buf->buff_size = cpu_to_le16(*buf_size);
232 break;
233 case HostCmd_ACT_GEN_GET:
234 default:
235 tx_buf->buff_size = 0;
236 break;
237 }
238 return 0;
239 }
240
241 /*
242 * This function prepares command of AMSDU aggregation control.
243 *
244 * Preparation includes -
245 * - Setting command ID, action and proper size
246 * - Setting AMSDU control parameters (for SET only)
247 * - Ensuring correct endian-ness
248 */
249 int mwifiex_cmd_amsdu_aggr_ctrl(struct host_cmd_ds_command *cmd,
250 int cmd_action,
251 struct mwifiex_ds_11n_amsdu_aggr_ctrl *aa_ctrl)
252 {
253 struct host_cmd_ds_amsdu_aggr_ctrl *amsdu_ctrl =
254 &cmd->params.amsdu_aggr_ctrl;
255 u16 action = (u16) cmd_action;
256
257 cmd->command = cpu_to_le16(HostCmd_CMD_AMSDU_AGGR_CTRL);
258 cmd->size = cpu_to_le16(sizeof(struct host_cmd_ds_amsdu_aggr_ctrl)
259 + S_DS_GEN);
260 amsdu_ctrl->action = cpu_to_le16(action);
261 switch (action) {
262 case HostCmd_ACT_GEN_SET:
263 amsdu_ctrl->enable = cpu_to_le16(aa_ctrl->enable);
264 amsdu_ctrl->curr_buf_size = 0;
265 break;
266 case HostCmd_ACT_GEN_GET:
267 default:
268 amsdu_ctrl->curr_buf_size = 0;
269 break;
270 }
271 return 0;
272 }
273
274 /*
275 * This function prepares 11n configuration command.
276 *
277 * Preparation includes -
278 * - Setting command ID, action and proper size
279 * - Setting HT Tx capability and HT Tx information fields
280 * - Ensuring correct endian-ness
281 */
282 int mwifiex_cmd_11n_cfg(struct mwifiex_private *priv,
283 struct host_cmd_ds_command *cmd, u16 cmd_action,
284 struct mwifiex_ds_11n_tx_cfg *txcfg)
285 {
286 struct host_cmd_ds_11n_cfg *htcfg = &cmd->params.htcfg;
287
288 cmd->command = cpu_to_le16(HostCmd_CMD_11N_CFG);
289 cmd->size = cpu_to_le16(sizeof(struct host_cmd_ds_11n_cfg) + S_DS_GEN);
290 htcfg->action = cpu_to_le16(cmd_action);
291 htcfg->ht_tx_cap = cpu_to_le16(txcfg->tx_htcap);
292 htcfg->ht_tx_info = cpu_to_le16(txcfg->tx_htinfo);
293
294 if (priv->adapter->is_hw_11ac_capable)
295 htcfg->misc_config = cpu_to_le16(txcfg->misc_config);
296
297 return 0;
298 }
299
300 /*
301 * This function appends an 11n TLV to a buffer.
302 *
303 * Buffer allocation is responsibility of the calling
304 * function. No size validation is made here.
305 *
306 * The function fills up the following sections, if applicable -
307 * - HT capability IE
308 * - HT information IE (with channel list)
309 * - 20/40 BSS Coexistence IE
310 * - HT Extended Capabilities IE
311 */
312 int
313 mwifiex_cmd_append_11n_tlv(struct mwifiex_private *priv,
314 struct mwifiex_bssdescriptor *bss_desc,
315 u8 **buffer)
316 {
317 struct mwifiex_ie_types_htcap *ht_cap;
318 struct mwifiex_ie_types_htinfo *ht_info;
319 struct mwifiex_ie_types_chan_list_param_set *chan_list;
320 struct mwifiex_ie_types_2040bssco *bss_co_2040;
321 struct mwifiex_ie_types_extcap *ext_cap;
322 int ret_len = 0;
323 struct ieee80211_supported_band *sband;
324 struct ieee_types_header *hdr;
325 u8 radio_type;
326
327 if (!buffer || !*buffer)
328 return ret_len;
329
330 radio_type = mwifiex_band_to_radio_type((u8) bss_desc->bss_band);
331 sband = priv->wdev.wiphy->bands[radio_type];
332
333 if (bss_desc->bcn_ht_cap) {
334 ht_cap = (struct mwifiex_ie_types_htcap *) *buffer;
335 memset(ht_cap, 0, sizeof(struct mwifiex_ie_types_htcap));
336 ht_cap->header.type = cpu_to_le16(WLAN_EID_HT_CAPABILITY);
337 ht_cap->header.len =
338 cpu_to_le16(sizeof(struct ieee80211_ht_cap));
339 memcpy((u8 *) ht_cap + sizeof(struct mwifiex_ie_types_header),
340 (u8 *)bss_desc->bcn_ht_cap,
341 le16_to_cpu(ht_cap->header.len));
342
343 mwifiex_fill_cap_info(priv, radio_type, &ht_cap->ht_cap);
344
345 *buffer += sizeof(struct mwifiex_ie_types_htcap);
346 ret_len += sizeof(struct mwifiex_ie_types_htcap);
347 }
348
349 if (bss_desc->bcn_ht_oper) {
350 if (priv->bss_mode == NL80211_IFTYPE_ADHOC) {
351 ht_info = (struct mwifiex_ie_types_htinfo *) *buffer;
352 memset(ht_info, 0,
353 sizeof(struct mwifiex_ie_types_htinfo));
354 ht_info->header.type =
355 cpu_to_le16(WLAN_EID_HT_OPERATION);
356 ht_info->header.len =
357 cpu_to_le16(
358 sizeof(struct ieee80211_ht_operation));
359
360 memcpy((u8 *) ht_info +
361 sizeof(struct mwifiex_ie_types_header),
362 (u8 *)bss_desc->bcn_ht_oper,
363 le16_to_cpu(ht_info->header.len));
364
365 if (!(sband->ht_cap.cap &
366 IEEE80211_HT_CAP_SUP_WIDTH_20_40))
367 ht_info->ht_oper.ht_param &=
368 ~(IEEE80211_HT_PARAM_CHAN_WIDTH_ANY |
369 IEEE80211_HT_PARAM_CHA_SEC_OFFSET);
370
371 *buffer += sizeof(struct mwifiex_ie_types_htinfo);
372 ret_len += sizeof(struct mwifiex_ie_types_htinfo);
373 }
374
375 chan_list =
376 (struct mwifiex_ie_types_chan_list_param_set *) *buffer;
377 memset(chan_list, 0,
378 sizeof(struct mwifiex_ie_types_chan_list_param_set));
379 chan_list->header.type = cpu_to_le16(TLV_TYPE_CHANLIST);
380 chan_list->header.len = cpu_to_le16(
381 sizeof(struct mwifiex_ie_types_chan_list_param_set) -
382 sizeof(struct mwifiex_ie_types_header));
383 chan_list->chan_scan_param[0].chan_number =
384 bss_desc->bcn_ht_oper->primary_chan;
385 chan_list->chan_scan_param[0].radio_type =
386 mwifiex_band_to_radio_type((u8) bss_desc->bss_band);
387
388 if (sband->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 &&
389 bss_desc->bcn_ht_oper->ht_param &
390 IEEE80211_HT_PARAM_CHAN_WIDTH_ANY)
391 SET_SECONDARYCHAN(chan_list->chan_scan_param[0].
392 radio_type,
393 (bss_desc->bcn_ht_oper->ht_param &
394 IEEE80211_HT_PARAM_CHA_SEC_OFFSET));
395
396 *buffer += sizeof(struct mwifiex_ie_types_chan_list_param_set);
397 ret_len += sizeof(struct mwifiex_ie_types_chan_list_param_set);
398 }
399
400 if (bss_desc->bcn_bss_co_2040) {
401 bss_co_2040 = (struct mwifiex_ie_types_2040bssco *) *buffer;
402 memset(bss_co_2040, 0,
403 sizeof(struct mwifiex_ie_types_2040bssco));
404 bss_co_2040->header.type = cpu_to_le16(WLAN_EID_BSS_COEX_2040);
405 bss_co_2040->header.len =
406 cpu_to_le16(sizeof(bss_co_2040->bss_co_2040));
407
408 memcpy((u8 *) bss_co_2040 +
409 sizeof(struct mwifiex_ie_types_header),
410 bss_desc->bcn_bss_co_2040 +
411 sizeof(struct ieee_types_header),
412 le16_to_cpu(bss_co_2040->header.len));
413
414 *buffer += sizeof(struct mwifiex_ie_types_2040bssco);
415 ret_len += sizeof(struct mwifiex_ie_types_2040bssco);
416 }
417
418 if (bss_desc->bcn_ext_cap) {
419 hdr = (void *)bss_desc->bcn_ext_cap;
420 ext_cap = (struct mwifiex_ie_types_extcap *) *buffer;
421 memset(ext_cap, 0, sizeof(struct mwifiex_ie_types_extcap));
422 ext_cap->header.type = cpu_to_le16(WLAN_EID_EXT_CAPABILITY);
423 ext_cap->header.len = cpu_to_le16(hdr->len);
424
425 memcpy((u8 *)ext_cap->ext_capab,
426 bss_desc->bcn_ext_cap + sizeof(struct ieee_types_header),
427 le16_to_cpu(ext_cap->header.len));
428
429 if (hdr->len > 3 &&
430 ext_cap->ext_capab[3] & WLAN_EXT_CAPA4_INTERWORKING_ENABLED)
431 priv->hs2_enabled = true;
432 else
433 priv->hs2_enabled = false;
434
435 *buffer += sizeof(struct mwifiex_ie_types_extcap) + hdr->len;
436 ret_len += sizeof(struct mwifiex_ie_types_extcap) + hdr->len;
437 }
438
439 return ret_len;
440 }
441
442 /*
443 * This function checks if the given pointer is valid entry of
444 * Tx BA Stream table.
445 */
446 static int mwifiex_is_tx_ba_stream_ptr_valid(struct mwifiex_private *priv,
447 struct mwifiex_tx_ba_stream_tbl *tx_tbl_ptr)
448 {
449 struct mwifiex_tx_ba_stream_tbl *tx_ba_tsr_tbl;
450
451 list_for_each_entry(tx_ba_tsr_tbl, &priv->tx_ba_stream_tbl_ptr, list) {
452 if (tx_ba_tsr_tbl == tx_tbl_ptr)
453 return true;
454 }
455
456 return false;
457 }
458
459 /*
460 * This function deletes the given entry in Tx BA Stream table.
461 *
462 * The function also performs a validity check on the supplied
463 * pointer before trying to delete.
464 */
465 void mwifiex_11n_delete_tx_ba_stream_tbl_entry(struct mwifiex_private *priv,
466 struct mwifiex_tx_ba_stream_tbl *tx_ba_tsr_tbl)
467 {
468 if (!tx_ba_tsr_tbl &&
469 mwifiex_is_tx_ba_stream_ptr_valid(priv, tx_ba_tsr_tbl))
470 return;
471
472 mwifiex_dbg(priv->adapter, INFO,
473 "info: tx_ba_tsr_tbl %p\n", tx_ba_tsr_tbl);
474
475 list_del(&tx_ba_tsr_tbl->list);
476
477 kfree(tx_ba_tsr_tbl);
478 }
479
480 /*
481 * This function deletes all the entries in Tx BA Stream table.
482 */
483 void mwifiex_11n_delete_all_tx_ba_stream_tbl(struct mwifiex_private *priv)
484 {
485 int i;
486 struct mwifiex_tx_ba_stream_tbl *del_tbl_ptr, *tmp_node;
487 unsigned long flags;
488
489 spin_lock_irqsave(&priv->tx_ba_stream_tbl_lock, flags);
490 list_for_each_entry_safe(del_tbl_ptr, tmp_node,
491 &priv->tx_ba_stream_tbl_ptr, list)
492 mwifiex_11n_delete_tx_ba_stream_tbl_entry(priv, del_tbl_ptr);
493 spin_unlock_irqrestore(&priv->tx_ba_stream_tbl_lock, flags);
494
495 INIT_LIST_HEAD(&priv->tx_ba_stream_tbl_ptr);
496
497 for (i = 0; i < MAX_NUM_TID; ++i)
498 priv->aggr_prio_tbl[i].ampdu_ap =
499 priv->aggr_prio_tbl[i].ampdu_user;
500 }
501
502 /*
503 * This function returns the pointer to an entry in BA Stream
504 * table which matches the given RA/TID pair.
505 */
506 struct mwifiex_tx_ba_stream_tbl *
507 mwifiex_get_ba_tbl(struct mwifiex_private *priv, int tid, u8 *ra)
508 {
509 struct mwifiex_tx_ba_stream_tbl *tx_ba_tsr_tbl;
510 unsigned long flags;
511
512 spin_lock_irqsave(&priv->tx_ba_stream_tbl_lock, flags);
513 list_for_each_entry(tx_ba_tsr_tbl, &priv->tx_ba_stream_tbl_ptr, list) {
514 if (ether_addr_equal_unaligned(tx_ba_tsr_tbl->ra, ra) &&
515 tx_ba_tsr_tbl->tid == tid) {
516 spin_unlock_irqrestore(&priv->tx_ba_stream_tbl_lock,
517 flags);
518 return tx_ba_tsr_tbl;
519 }
520 }
521 spin_unlock_irqrestore(&priv->tx_ba_stream_tbl_lock, flags);
522 return NULL;
523 }
524
525 /*
526 * This function creates an entry in Tx BA stream table for the
527 * given RA/TID pair.
528 */
529 void mwifiex_create_ba_tbl(struct mwifiex_private *priv, u8 *ra, int tid,
530 enum mwifiex_ba_status ba_status)
531 {
532 struct mwifiex_tx_ba_stream_tbl *new_node;
533 struct mwifiex_ra_list_tbl *ra_list;
534 unsigned long flags;
535 int tid_down;
536
537 if (!mwifiex_get_ba_tbl(priv, tid, ra)) {
538 new_node = kzalloc(sizeof(struct mwifiex_tx_ba_stream_tbl),
539 GFP_ATOMIC);
540 if (!new_node)
541 return;
542
543 tid_down = mwifiex_wmm_downgrade_tid(priv, tid);
544 ra_list = mwifiex_wmm_get_ralist_node(priv, tid_down, ra);
545 if (ra_list) {
546 ra_list->ba_status = ba_status;
547 ra_list->amsdu_in_ampdu = false;
548 }
549 INIT_LIST_HEAD(&new_node->list);
550
551 new_node->tid = tid;
552 new_node->ba_status = ba_status;
553 memcpy(new_node->ra, ra, ETH_ALEN);
554
555 spin_lock_irqsave(&priv->tx_ba_stream_tbl_lock, flags);
556 list_add_tail(&new_node->list, &priv->tx_ba_stream_tbl_ptr);
557 spin_unlock_irqrestore(&priv->tx_ba_stream_tbl_lock, flags);
558 }
559 }
560
561 /*
562 * This function sends an add BA request to the given TID/RA pair.
563 */
564 int mwifiex_send_addba(struct mwifiex_private *priv, int tid, u8 *peer_mac)
565 {
566 struct host_cmd_ds_11n_addba_req add_ba_req;
567 u32 tx_win_size = priv->add_ba_param.tx_win_size;
568 static u8 dialog_tok;
569 int ret;
570 unsigned long flags;
571 u16 block_ack_param_set;
572
573 mwifiex_dbg(priv->adapter, CMD, "cmd: %s: tid %d\n", __func__, tid);
574
575 if ((GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA) &&
576 ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info) &&
577 priv->adapter->is_hw_11ac_capable &&
578 memcmp(priv->cfg_bssid, peer_mac, ETH_ALEN)) {
579 struct mwifiex_sta_node *sta_ptr;
580
581 spin_lock_irqsave(&priv->sta_list_spinlock, flags);
582 sta_ptr = mwifiex_get_sta_entry(priv, peer_mac);
583 if (!sta_ptr) {
584 spin_unlock_irqrestore(&priv->sta_list_spinlock, flags);
585 mwifiex_dbg(priv->adapter, ERROR,
586 "BA setup with unknown TDLS peer %pM!\n",
587 peer_mac);
588 return -1;
589 }
590 if (sta_ptr->is_11ac_enabled)
591 tx_win_size = MWIFIEX_11AC_STA_AMPDU_DEF_TXWINSIZE;
592 spin_unlock_irqrestore(&priv->sta_list_spinlock, flags);
593 }
594
595 block_ack_param_set = (u16)((tid << BLOCKACKPARAM_TID_POS) |
596 tx_win_size << BLOCKACKPARAM_WINSIZE_POS |
597 IMMEDIATE_BLOCK_ACK);
598
599 /* enable AMSDU inside AMPDU */
600 if (priv->add_ba_param.tx_amsdu &&
601 (priv->aggr_prio_tbl[tid].amsdu != BA_STREAM_NOT_ALLOWED))
602 block_ack_param_set |= BLOCKACKPARAM_AMSDU_SUPP_MASK;
603
604 add_ba_req.block_ack_param_set = cpu_to_le16(block_ack_param_set);
605 add_ba_req.block_ack_tmo = cpu_to_le16((u16)priv->add_ba_param.timeout);
606
607 ++dialog_tok;
608
609 if (dialog_tok == 0)
610 dialog_tok = 1;
611
612 add_ba_req.dialog_token = dialog_tok;
613 memcpy(&add_ba_req.peer_mac_addr, peer_mac, ETH_ALEN);
614
615 /* We don't wait for the response of this command */
616 ret = mwifiex_send_cmd(priv, HostCmd_CMD_11N_ADDBA_REQ,
617 0, 0, &add_ba_req, false);
618
619 return ret;
620 }
621
622 /*
623 * This function sends a delete BA request to the given TID/RA pair.
624 */
625 int mwifiex_send_delba(struct mwifiex_private *priv, int tid, u8 *peer_mac,
626 int initiator)
627 {
628 struct host_cmd_ds_11n_delba delba;
629 int ret;
630 uint16_t del_ba_param_set;
631
632 memset(&delba, 0, sizeof(delba));
633 delba.del_ba_param_set = cpu_to_le16(tid << DELBA_TID_POS);
634
635 del_ba_param_set = le16_to_cpu(delba.del_ba_param_set);
636 if (initiator)
637 del_ba_param_set |= IEEE80211_DELBA_PARAM_INITIATOR_MASK;
638 else
639 del_ba_param_set &= ~IEEE80211_DELBA_PARAM_INITIATOR_MASK;
640
641 memcpy(&delba.peer_mac_addr, peer_mac, ETH_ALEN);
642
643 /* We don't wait for the response of this command */
644 ret = mwifiex_send_cmd(priv, HostCmd_CMD_11N_DELBA,
645 HostCmd_ACT_GEN_SET, 0, &delba, false);
646
647 return ret;
648 }
649
650 /*
651 * This function sends delba to specific tid
652 */
653 void mwifiex_11n_delba(struct mwifiex_private *priv, int tid)
654 {
655 struct mwifiex_rx_reorder_tbl *rx_reor_tbl_ptr;
656 unsigned long flags;
657
658 spin_lock_irqsave(&priv->rx_reorder_tbl_lock, flags);
659 if (list_empty(&priv->rx_reorder_tbl_ptr)) {
660 dev_dbg(priv->adapter->dev,
661 "mwifiex_11n_delba: rx_reorder_tbl_ptr empty\n");
662 goto exit;
663 }
664
665 list_for_each_entry(rx_reor_tbl_ptr, &priv->rx_reorder_tbl_ptr, list) {
666 if (rx_reor_tbl_ptr->tid == tid) {
667 dev_dbg(priv->adapter->dev,
668 "Send delba to tid=%d, %pM\n",
669 tid, rx_reor_tbl_ptr->ta);
670 mwifiex_send_delba(priv, tid, rx_reor_tbl_ptr->ta, 0);
671 goto exit;
672 }
673 }
674 exit:
675 spin_unlock_irqrestore(&priv->rx_reorder_tbl_lock, flags);
676 }
677
678 /*
679 * This function handles the command response of a delete BA request.
680 */
681 void mwifiex_11n_delete_ba_stream(struct mwifiex_private *priv, u8 *del_ba)
682 {
683 struct host_cmd_ds_11n_delba *cmd_del_ba =
684 (struct host_cmd_ds_11n_delba *) del_ba;
685 uint16_t del_ba_param_set = le16_to_cpu(cmd_del_ba->del_ba_param_set);
686 int tid;
687
688 tid = del_ba_param_set >> DELBA_TID_POS;
689
690 mwifiex_del_ba_tbl(priv, tid, cmd_del_ba->peer_mac_addr,
691 TYPE_DELBA_RECEIVE, INITIATOR_BIT(del_ba_param_set));
692 }
693
694 /*
695 * This function retrieves the Rx reordering table.
696 */
697 int mwifiex_get_rx_reorder_tbl(struct mwifiex_private *priv,
698 struct mwifiex_ds_rx_reorder_tbl *buf)
699 {
700 int i;
701 struct mwifiex_ds_rx_reorder_tbl *rx_reo_tbl = buf;
702 struct mwifiex_rx_reorder_tbl *rx_reorder_tbl_ptr;
703 int count = 0;
704 unsigned long flags;
705
706 spin_lock_irqsave(&priv->rx_reorder_tbl_lock, flags);
707 list_for_each_entry(rx_reorder_tbl_ptr, &priv->rx_reorder_tbl_ptr,
708 list) {
709 rx_reo_tbl->tid = (u16) rx_reorder_tbl_ptr->tid;
710 memcpy(rx_reo_tbl->ta, rx_reorder_tbl_ptr->ta, ETH_ALEN);
711 rx_reo_tbl->start_win = rx_reorder_tbl_ptr->start_win;
712 rx_reo_tbl->win_size = rx_reorder_tbl_ptr->win_size;
713 for (i = 0; i < rx_reorder_tbl_ptr->win_size; ++i) {
714 if (rx_reorder_tbl_ptr->rx_reorder_ptr[i])
715 rx_reo_tbl->buffer[i] = true;
716 else
717 rx_reo_tbl->buffer[i] = false;
718 }
719 rx_reo_tbl++;
720 count++;
721
722 if (count >= MWIFIEX_MAX_RX_BASTREAM_SUPPORTED)
723 break;
724 }
725 spin_unlock_irqrestore(&priv->rx_reorder_tbl_lock, flags);
726
727 return count;
728 }
729
730 /*
731 * This function retrieves the Tx BA stream table.
732 */
733 int mwifiex_get_tx_ba_stream_tbl(struct mwifiex_private *priv,
734 struct mwifiex_ds_tx_ba_stream_tbl *buf)
735 {
736 struct mwifiex_tx_ba_stream_tbl *tx_ba_tsr_tbl;
737 struct mwifiex_ds_tx_ba_stream_tbl *rx_reo_tbl = buf;
738 int count = 0;
739 unsigned long flags;
740
741 spin_lock_irqsave(&priv->tx_ba_stream_tbl_lock, flags);
742 list_for_each_entry(tx_ba_tsr_tbl, &priv->tx_ba_stream_tbl_ptr, list) {
743 rx_reo_tbl->tid = (u16) tx_ba_tsr_tbl->tid;
744 mwifiex_dbg(priv->adapter, DATA, "data: %s tid=%d\n",
745 __func__, rx_reo_tbl->tid);
746 memcpy(rx_reo_tbl->ra, tx_ba_tsr_tbl->ra, ETH_ALEN);
747 rx_reo_tbl->amsdu = tx_ba_tsr_tbl->amsdu;
748 rx_reo_tbl++;
749 count++;
750 if (count >= MWIFIEX_MAX_TX_BASTREAM_SUPPORTED)
751 break;
752 }
753 spin_unlock_irqrestore(&priv->tx_ba_stream_tbl_lock, flags);
754
755 return count;
756 }
757
758 /*
759 * This function retrieves the entry for specific tx BA stream table by RA and
760 * deletes it.
761 */
762 void mwifiex_del_tx_ba_stream_tbl_by_ra(struct mwifiex_private *priv, u8 *ra)
763 {
764 struct mwifiex_tx_ba_stream_tbl *tbl, *tmp;
765 unsigned long flags;
766
767 if (!ra)
768 return;
769
770 spin_lock_irqsave(&priv->tx_ba_stream_tbl_lock, flags);
771 list_for_each_entry_safe(tbl, tmp, &priv->tx_ba_stream_tbl_ptr, list)
772 if (!memcmp(tbl->ra, ra, ETH_ALEN))
773 mwifiex_11n_delete_tx_ba_stream_tbl_entry(priv, tbl);
774 spin_unlock_irqrestore(&priv->tx_ba_stream_tbl_lock, flags);
775
776 return;
777 }
778
779 /* This function initializes the BlockACK setup information for given
780 * mwifiex_private structure.
781 */
782 void mwifiex_set_ba_params(struct mwifiex_private *priv)
783 {
784 priv->add_ba_param.timeout = MWIFIEX_DEFAULT_BLOCK_ACK_TIMEOUT;
785
786 if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_UAP) {
787 priv->add_ba_param.tx_win_size =
788 MWIFIEX_UAP_AMPDU_DEF_TXWINSIZE;
789 priv->add_ba_param.rx_win_size =
790 MWIFIEX_UAP_AMPDU_DEF_RXWINSIZE;
791 } else {
792 priv->add_ba_param.tx_win_size =
793 MWIFIEX_STA_AMPDU_DEF_TXWINSIZE;
794 priv->add_ba_param.rx_win_size =
795 MWIFIEX_STA_AMPDU_DEF_RXWINSIZE;
796 }
797
798 priv->add_ba_param.tx_amsdu = true;
799 priv->add_ba_param.rx_amsdu = true;
800
801 return;
802 }
803
804 u8 mwifiex_get_sec_chan_offset(int chan)
805 {
806 u8 sec_offset;
807
808 switch (chan) {
809 case 36:
810 case 44:
811 case 52:
812 case 60:
813 case 100:
814 case 108:
815 case 116:
816 case 124:
817 case 132:
818 case 140:
819 case 149:
820 case 157:
821 sec_offset = IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
822 break;
823 case 40:
824 case 48:
825 case 56:
826 case 64:
827 case 104:
828 case 112:
829 case 120:
830 case 128:
831 case 136:
832 case 144:
833 case 153:
834 case 161:
835 sec_offset = IEEE80211_HT_PARAM_CHA_SEC_BELOW;
836 break;
837 case 165:
838 default:
839 sec_offset = IEEE80211_HT_PARAM_CHA_SEC_NONE;
840 break;
841 }
842
843 return sec_offset;
844 }
845
846 /* This function will send DELBA to entries in the priv's
847 * Tx BA stream table
848 */
849 static void
850 mwifiex_send_delba_txbastream_tbl(struct mwifiex_private *priv, u8 tid)
851 {
852 struct mwifiex_adapter *adapter = priv->adapter;
853 struct mwifiex_tx_ba_stream_tbl *tx_ba_stream_tbl_ptr;
854
855 if (list_empty(&priv->tx_ba_stream_tbl_ptr))
856 return;
857
858 list_for_each_entry(tx_ba_stream_tbl_ptr,
859 &priv->tx_ba_stream_tbl_ptr, list) {
860 if (tx_ba_stream_tbl_ptr->ba_status == BA_SETUP_COMPLETE) {
861 if (tid == tx_ba_stream_tbl_ptr->tid) {
862 dev_dbg(adapter->dev,
863 "Tx:Send delba to tid=%d, %pM\n", tid,
864 tx_ba_stream_tbl_ptr->ra);
865 mwifiex_send_delba(priv,
866 tx_ba_stream_tbl_ptr->tid,
867 tx_ba_stream_tbl_ptr->ra, 1);
868 return;
869 }
870 }
871 }
872 }
873
874 /* This function updates all the tx_win_size
875 */
876 void mwifiex_update_ampdu_txwinsize(struct mwifiex_adapter *adapter)
877 {
878 u8 i;
879 u32 tx_win_size;
880 struct mwifiex_private *priv;
881
882 for (i = 0; i < adapter->priv_num; i++) {
883 if (!adapter->priv[i])
884 continue;
885 priv = adapter->priv[i];
886 tx_win_size = priv->add_ba_param.tx_win_size;
887
888 if (priv->bss_type == MWIFIEX_BSS_TYPE_STA)
889 priv->add_ba_param.tx_win_size =
890 MWIFIEX_STA_AMPDU_DEF_TXWINSIZE;
891
892 if (priv->bss_type == MWIFIEX_BSS_TYPE_P2P)
893 priv->add_ba_param.tx_win_size =
894 MWIFIEX_STA_AMPDU_DEF_TXWINSIZE;
895
896 if (priv->bss_type == MWIFIEX_BSS_TYPE_UAP)
897 priv->add_ba_param.tx_win_size =
898 MWIFIEX_UAP_AMPDU_DEF_TXWINSIZE;
899
900 if (adapter->coex_win_size) {
901 if (adapter->coex_tx_win_size)
902 priv->add_ba_param.tx_win_size =
903 adapter->coex_tx_win_size;
904 }
905
906 if (tx_win_size != priv->add_ba_param.tx_win_size) {
907 if (!priv->media_connected)
908 continue;
909 for (i = 0; i < MAX_NUM_TID; i++)
910 mwifiex_send_delba_txbastream_tbl(priv, i);
911 }
912 }
913 }
Linux with added FPC-III support