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 */
mwifiex_fill_cap_info(struct mwifiex_private * priv,u8 radio_type,struct ieee80211_ht_cap * ht_cap)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 dev_err(priv->adapter->dev, "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 *
mwifiex_get_ba_status(struct mwifiex_private * priv,enum mwifiex_ba_status ba_status)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 */
mwifiex_ret_11n_delba(struct mwifiex_private * priv,struct host_cmd_ds_command * resp)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 */
mwifiex_ret_11n_addba_req(struct mwifiex_private * priv,struct host_cmd_ds_command * resp)156 int mwifiex_ret_11n_addba_req(struct mwifiex_private *priv,
157 struct host_cmd_ds_command *resp)
158 {
159 int tid;
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 ra_list = mwifiex_wmm_get_ralist_node(priv, tid, add_ba_rsp->
171 peer_mac_addr);
172 if (le16_to_cpu(add_ba_rsp->status_code) != BA_RESULT_SUCCESS) {
173 if (ra_list) {
174 ra_list->ba_status = BA_SETUP_NONE;
175 ra_list->amsdu_in_ampdu = false;
176 }
177 mwifiex_del_ba_tbl(priv, tid, add_ba_rsp->peer_mac_addr,
178 TYPE_DELBA_SENT, true);
179 if (add_ba_rsp->add_rsp_result != BA_RESULT_TIMEOUT)
180 priv->aggr_prio_tbl[tid].ampdu_ap =
181 BA_STREAM_NOT_ALLOWED;
182 return 0;
183 }
184
185 tx_ba_tbl = mwifiex_get_ba_tbl(priv, tid, add_ba_rsp->peer_mac_addr);
186 if (tx_ba_tbl) {
187 dev_dbg(priv->adapter->dev, "info: BA stream complete\n");
188 tx_ba_tbl->ba_status = BA_SETUP_COMPLETE;
189 if ((block_ack_param_set & BLOCKACKPARAM_AMSDU_SUPP_MASK) &&
190 priv->add_ba_param.tx_amsdu &&
191 (priv->aggr_prio_tbl[tid].amsdu != BA_STREAM_NOT_ALLOWED))
192 tx_ba_tbl->amsdu = true;
193 else
194 tx_ba_tbl->amsdu = false;
195 if (ra_list) {
196 ra_list->amsdu_in_ampdu = tx_ba_tbl->amsdu;
197 ra_list->ba_status = BA_SETUP_COMPLETE;
198 }
199 } else {
200 dev_err(priv->adapter->dev, "BA stream not created\n");
201 }
202
203 return 0;
204 }
205
206 /*
207 * This function prepares command of reconfigure Tx buffer.
208 *
209 * Preparation includes -
210 * - Setting command ID, action and proper size
211 * - Setting Tx buffer size (for SET only)
212 * - Ensuring correct endian-ness
213 */
mwifiex_cmd_recfg_tx_buf(struct mwifiex_private * priv,struct host_cmd_ds_command * cmd,int cmd_action,u16 * buf_size)214 int mwifiex_cmd_recfg_tx_buf(struct mwifiex_private *priv,
215 struct host_cmd_ds_command *cmd, int cmd_action,
216 u16 *buf_size)
217 {
218 struct host_cmd_ds_txbuf_cfg *tx_buf = &cmd->params.tx_buf;
219 u16 action = (u16) cmd_action;
220
221 cmd->command = cpu_to_le16(HostCmd_CMD_RECONFIGURE_TX_BUFF);
222 cmd->size =
223 cpu_to_le16(sizeof(struct host_cmd_ds_txbuf_cfg) + S_DS_GEN);
224 tx_buf->action = cpu_to_le16(action);
225 switch (action) {
226 case HostCmd_ACT_GEN_SET:
227 dev_dbg(priv->adapter->dev, "cmd: set tx_buf=%d\n", *buf_size);
228 tx_buf->buff_size = cpu_to_le16(*buf_size);
229 break;
230 case HostCmd_ACT_GEN_GET:
231 default:
232 tx_buf->buff_size = 0;
233 break;
234 }
235 return 0;
236 }
237
238 /*
239 * This function prepares command of AMSDU aggregation control.
240 *
241 * Preparation includes -
242 * - Setting command ID, action and proper size
243 * - Setting AMSDU control parameters (for SET only)
244 * - Ensuring correct endian-ness
245 */
mwifiex_cmd_amsdu_aggr_ctrl(struct host_cmd_ds_command * cmd,int cmd_action,struct mwifiex_ds_11n_amsdu_aggr_ctrl * aa_ctrl)246 int mwifiex_cmd_amsdu_aggr_ctrl(struct host_cmd_ds_command *cmd,
247 int cmd_action,
248 struct mwifiex_ds_11n_amsdu_aggr_ctrl *aa_ctrl)
249 {
250 struct host_cmd_ds_amsdu_aggr_ctrl *amsdu_ctrl =
251 &cmd->params.amsdu_aggr_ctrl;
252 u16 action = (u16) cmd_action;
253
254 cmd->command = cpu_to_le16(HostCmd_CMD_AMSDU_AGGR_CTRL);
255 cmd->size = cpu_to_le16(sizeof(struct host_cmd_ds_amsdu_aggr_ctrl)
256 + S_DS_GEN);
257 amsdu_ctrl->action = cpu_to_le16(action);
258 switch (action) {
259 case HostCmd_ACT_GEN_SET:
260 amsdu_ctrl->enable = cpu_to_le16(aa_ctrl->enable);
261 amsdu_ctrl->curr_buf_size = 0;
262 break;
263 case HostCmd_ACT_GEN_GET:
264 default:
265 amsdu_ctrl->curr_buf_size = 0;
266 break;
267 }
268 return 0;
269 }
270
271 /*
272 * This function prepares 11n configuration command.
273 *
274 * Preparation includes -
275 * - Setting command ID, action and proper size
276 * - Setting HT Tx capability and HT Tx information fields
277 * - Ensuring correct endian-ness
278 */
mwifiex_cmd_11n_cfg(struct mwifiex_private * priv,struct host_cmd_ds_command * cmd,u16 cmd_action,struct mwifiex_ds_11n_tx_cfg * txcfg)279 int mwifiex_cmd_11n_cfg(struct mwifiex_private *priv,
280 struct host_cmd_ds_command *cmd, u16 cmd_action,
281 struct mwifiex_ds_11n_tx_cfg *txcfg)
282 {
283 struct host_cmd_ds_11n_cfg *htcfg = &cmd->params.htcfg;
284
285 cmd->command = cpu_to_le16(HostCmd_CMD_11N_CFG);
286 cmd->size = cpu_to_le16(sizeof(struct host_cmd_ds_11n_cfg) + S_DS_GEN);
287 htcfg->action = cpu_to_le16(cmd_action);
288 htcfg->ht_tx_cap = cpu_to_le16(txcfg->tx_htcap);
289 htcfg->ht_tx_info = cpu_to_le16(txcfg->tx_htinfo);
290
291 if (priv->adapter->is_hw_11ac_capable)
292 htcfg->misc_config = cpu_to_le16(txcfg->misc_config);
293
294 return 0;
295 }
296
297 /*
298 * This function appends an 11n TLV to a buffer.
299 *
300 * Buffer allocation is responsibility of the calling
301 * function. No size validation is made here.
302 *
303 * The function fills up the following sections, if applicable -
304 * - HT capability IE
305 * - HT information IE (with channel list)
306 * - 20/40 BSS Coexistence IE
307 * - HT Extended Capabilities IE
308 */
309 int
mwifiex_cmd_append_11n_tlv(struct mwifiex_private * priv,struct mwifiex_bssdescriptor * bss_desc,u8 ** buffer)310 mwifiex_cmd_append_11n_tlv(struct mwifiex_private *priv,
311 struct mwifiex_bssdescriptor *bss_desc,
312 u8 **buffer)
313 {
314 struct mwifiex_ie_types_htcap *ht_cap;
315 struct mwifiex_ie_types_htinfo *ht_info;
316 struct mwifiex_ie_types_chan_list_param_set *chan_list;
317 struct mwifiex_ie_types_2040bssco *bss_co_2040;
318 struct mwifiex_ie_types_extcap *ext_cap;
319 int ret_len = 0;
320 struct ieee80211_supported_band *sband;
321 struct ieee_types_header *hdr;
322 u8 radio_type;
323
324 if (!buffer || !*buffer)
325 return ret_len;
326
327 radio_type = mwifiex_band_to_radio_type((u8) bss_desc->bss_band);
328 sband = priv->wdev.wiphy->bands[radio_type];
329
330 if (bss_desc->bcn_ht_cap) {
331 ht_cap = (struct mwifiex_ie_types_htcap *) *buffer;
332 memset(ht_cap, 0, sizeof(struct mwifiex_ie_types_htcap));
333 ht_cap->header.type = cpu_to_le16(WLAN_EID_HT_CAPABILITY);
334 ht_cap->header.len =
335 cpu_to_le16(sizeof(struct ieee80211_ht_cap));
336 memcpy((u8 *) ht_cap + sizeof(struct mwifiex_ie_types_header),
337 (u8 *)bss_desc->bcn_ht_cap,
338 le16_to_cpu(ht_cap->header.len));
339
340 mwifiex_fill_cap_info(priv, radio_type, &ht_cap->ht_cap);
341
342 *buffer += sizeof(struct mwifiex_ie_types_htcap);
343 ret_len += sizeof(struct mwifiex_ie_types_htcap);
344 }
345
346 if (bss_desc->bcn_ht_oper) {
347 if (priv->bss_mode == NL80211_IFTYPE_ADHOC) {
348 ht_info = (struct mwifiex_ie_types_htinfo *) *buffer;
349 memset(ht_info, 0,
350 sizeof(struct mwifiex_ie_types_htinfo));
351 ht_info->header.type =
352 cpu_to_le16(WLAN_EID_HT_OPERATION);
353 ht_info->header.len =
354 cpu_to_le16(
355 sizeof(struct ieee80211_ht_operation));
356
357 memcpy((u8 *) ht_info +
358 sizeof(struct mwifiex_ie_types_header),
359 (u8 *)bss_desc->bcn_ht_oper,
360 le16_to_cpu(ht_info->header.len));
361
362 if (!(sband->ht_cap.cap &
363 IEEE80211_HT_CAP_SUP_WIDTH_20_40))
364 ht_info->ht_oper.ht_param &=
365 ~(IEEE80211_HT_PARAM_CHAN_WIDTH_ANY |
366 IEEE80211_HT_PARAM_CHA_SEC_OFFSET);
367
368 *buffer += sizeof(struct mwifiex_ie_types_htinfo);
369 ret_len += sizeof(struct mwifiex_ie_types_htinfo);
370 }
371
372 chan_list =
373 (struct mwifiex_ie_types_chan_list_param_set *) *buffer;
374 memset(chan_list, 0,
375 sizeof(struct mwifiex_ie_types_chan_list_param_set));
376 chan_list->header.type = cpu_to_le16(TLV_TYPE_CHANLIST);
377 chan_list->header.len = cpu_to_le16(
378 sizeof(struct mwifiex_ie_types_chan_list_param_set) -
379 sizeof(struct mwifiex_ie_types_header));
380 chan_list->chan_scan_param[0].chan_number =
381 bss_desc->bcn_ht_oper->primary_chan;
382 chan_list->chan_scan_param[0].radio_type =
383 mwifiex_band_to_radio_type((u8) bss_desc->bss_band);
384
385 if (sband->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 &&
386 bss_desc->bcn_ht_oper->ht_param &
387 IEEE80211_HT_PARAM_CHAN_WIDTH_ANY)
388 SET_SECONDARYCHAN(chan_list->chan_scan_param[0].
389 radio_type,
390 (bss_desc->bcn_ht_oper->ht_param &
391 IEEE80211_HT_PARAM_CHA_SEC_OFFSET));
392
393 *buffer += sizeof(struct mwifiex_ie_types_chan_list_param_set);
394 ret_len += sizeof(struct mwifiex_ie_types_chan_list_param_set);
395 }
396
397 if (bss_desc->bcn_bss_co_2040) {
398 bss_co_2040 = (struct mwifiex_ie_types_2040bssco *) *buffer;
399 memset(bss_co_2040, 0,
400 sizeof(struct mwifiex_ie_types_2040bssco));
401 bss_co_2040->header.type = cpu_to_le16(WLAN_EID_BSS_COEX_2040);
402 bss_co_2040->header.len =
403 cpu_to_le16(sizeof(bss_co_2040->bss_co_2040));
404
405 memcpy((u8 *) bss_co_2040 +
406 sizeof(struct mwifiex_ie_types_header),
407 bss_desc->bcn_bss_co_2040 +
408 sizeof(struct ieee_types_header),
409 le16_to_cpu(bss_co_2040->header.len));
410
411 *buffer += sizeof(struct mwifiex_ie_types_2040bssco);
412 ret_len += sizeof(struct mwifiex_ie_types_2040bssco);
413 }
414
415 if (bss_desc->bcn_ext_cap) {
416 hdr = (void *)bss_desc->bcn_ext_cap;
417 ext_cap = (struct mwifiex_ie_types_extcap *) *buffer;
418 memset(ext_cap, 0, sizeof(struct mwifiex_ie_types_extcap));
419 ext_cap->header.type = cpu_to_le16(WLAN_EID_EXT_CAPABILITY);
420 ext_cap->header.len = cpu_to_le16(hdr->len);
421
422 memcpy((u8 *)ext_cap->ext_capab,
423 bss_desc->bcn_ext_cap + sizeof(struct ieee_types_header),
424 le16_to_cpu(ext_cap->header.len));
425
426 if (hdr->len > 3 &&
427 ext_cap->ext_capab[3] & WLAN_EXT_CAPA4_INTERWORKING_ENABLED)
428 priv->hs2_enabled = true;
429 else
430 priv->hs2_enabled = false;
431
432 *buffer += sizeof(struct mwifiex_ie_types_extcap) + hdr->len;
433 ret_len += sizeof(struct mwifiex_ie_types_extcap) + hdr->len;
434 }
435
436 return ret_len;
437 }
438
439 /*
440 * This function checks if the given pointer is valid entry of
441 * Tx BA Stream table.
442 */
mwifiex_is_tx_ba_stream_ptr_valid(struct mwifiex_private * priv,struct mwifiex_tx_ba_stream_tbl * tx_tbl_ptr)443 static int mwifiex_is_tx_ba_stream_ptr_valid(struct mwifiex_private *priv,
444 struct mwifiex_tx_ba_stream_tbl *tx_tbl_ptr)
445 {
446 struct mwifiex_tx_ba_stream_tbl *tx_ba_tsr_tbl;
447
448 list_for_each_entry(tx_ba_tsr_tbl, &priv->tx_ba_stream_tbl_ptr, list) {
449 if (tx_ba_tsr_tbl == tx_tbl_ptr)
450 return true;
451 }
452
453 return false;
454 }
455
456 /*
457 * This function deletes the given entry in Tx BA Stream table.
458 *
459 * The function also performs a validity check on the supplied
460 * pointer before trying to delete.
461 */
mwifiex_11n_delete_tx_ba_stream_tbl_entry(struct mwifiex_private * priv,struct mwifiex_tx_ba_stream_tbl * tx_ba_tsr_tbl)462 void mwifiex_11n_delete_tx_ba_stream_tbl_entry(struct mwifiex_private *priv,
463 struct mwifiex_tx_ba_stream_tbl *tx_ba_tsr_tbl)
464 {
465 if (!tx_ba_tsr_tbl &&
466 mwifiex_is_tx_ba_stream_ptr_valid(priv, tx_ba_tsr_tbl))
467 return;
468
469 dev_dbg(priv->adapter->dev, "info: tx_ba_tsr_tbl %p\n", tx_ba_tsr_tbl);
470
471 list_del(&tx_ba_tsr_tbl->list);
472
473 kfree(tx_ba_tsr_tbl);
474 }
475
476 /*
477 * This function deletes all the entries in Tx BA Stream table.
478 */
mwifiex_11n_delete_all_tx_ba_stream_tbl(struct mwifiex_private * priv)479 void mwifiex_11n_delete_all_tx_ba_stream_tbl(struct mwifiex_private *priv)
480 {
481 int i;
482 struct mwifiex_tx_ba_stream_tbl *del_tbl_ptr, *tmp_node;
483 unsigned long flags;
484
485 spin_lock_irqsave(&priv->tx_ba_stream_tbl_lock, flags);
486 list_for_each_entry_safe(del_tbl_ptr, tmp_node,
487 &priv->tx_ba_stream_tbl_ptr, list)
488 mwifiex_11n_delete_tx_ba_stream_tbl_entry(priv, del_tbl_ptr);
489 spin_unlock_irqrestore(&priv->tx_ba_stream_tbl_lock, flags);
490
491 INIT_LIST_HEAD(&priv->tx_ba_stream_tbl_ptr);
492
493 for (i = 0; i < MAX_NUM_TID; ++i)
494 priv->aggr_prio_tbl[i].ampdu_ap =
495 priv->aggr_prio_tbl[i].ampdu_user;
496 }
497
498 /*
499 * This function returns the pointer to an entry in BA Stream
500 * table which matches the given RA/TID pair.
501 */
502 struct mwifiex_tx_ba_stream_tbl *
mwifiex_get_ba_tbl(struct mwifiex_private * priv,int tid,u8 * ra)503 mwifiex_get_ba_tbl(struct mwifiex_private *priv, int tid, u8 *ra)
504 {
505 struct mwifiex_tx_ba_stream_tbl *tx_ba_tsr_tbl;
506 unsigned long flags;
507
508 spin_lock_irqsave(&priv->tx_ba_stream_tbl_lock, flags);
509 list_for_each_entry(tx_ba_tsr_tbl, &priv->tx_ba_stream_tbl_ptr, list) {
510 if (ether_addr_equal_unaligned(tx_ba_tsr_tbl->ra, ra) &&
511 tx_ba_tsr_tbl->tid == tid) {
512 spin_unlock_irqrestore(&priv->tx_ba_stream_tbl_lock,
513 flags);
514 return tx_ba_tsr_tbl;
515 }
516 }
517 spin_unlock_irqrestore(&priv->tx_ba_stream_tbl_lock, flags);
518 return NULL;
519 }
520
521 /*
522 * This function creates an entry in Tx BA stream table for the
523 * given RA/TID pair.
524 */
mwifiex_create_ba_tbl(struct mwifiex_private * priv,u8 * ra,int tid,enum mwifiex_ba_status ba_status)525 void mwifiex_create_ba_tbl(struct mwifiex_private *priv, u8 *ra, int tid,
526 enum mwifiex_ba_status ba_status)
527 {
528 struct mwifiex_tx_ba_stream_tbl *new_node;
529 struct mwifiex_ra_list_tbl *ra_list;
530 unsigned long flags;
531
532 if (!mwifiex_get_ba_tbl(priv, tid, ra)) {
533 new_node = kzalloc(sizeof(struct mwifiex_tx_ba_stream_tbl),
534 GFP_ATOMIC);
535 if (!new_node)
536 return;
537 ra_list = mwifiex_wmm_get_ralist_node(priv, tid, ra);
538 if (ra_list) {
539 ra_list->ba_status = ba_status;
540 ra_list->amsdu_in_ampdu = false;
541 }
542 INIT_LIST_HEAD(&new_node->list);
543
544 new_node->tid = tid;
545 new_node->ba_status = ba_status;
546 memcpy(new_node->ra, ra, ETH_ALEN);
547
548 spin_lock_irqsave(&priv->tx_ba_stream_tbl_lock, flags);
549 list_add_tail(&new_node->list, &priv->tx_ba_stream_tbl_ptr);
550 spin_unlock_irqrestore(&priv->tx_ba_stream_tbl_lock, flags);
551 }
552 }
553
554 /*
555 * This function sends an add BA request to the given TID/RA pair.
556 */
mwifiex_send_addba(struct mwifiex_private * priv,int tid,u8 * peer_mac)557 int mwifiex_send_addba(struct mwifiex_private *priv, int tid, u8 *peer_mac)
558 {
559 struct host_cmd_ds_11n_addba_req add_ba_req;
560 u32 tx_win_size = priv->add_ba_param.tx_win_size;
561 static u8 dialog_tok;
562 int ret;
563 unsigned long flags;
564 u16 block_ack_param_set;
565
566 dev_dbg(priv->adapter->dev, "cmd: %s: tid %d\n", __func__, tid);
567
568 if ((GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA) &&
569 ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info) &&
570 priv->adapter->is_hw_11ac_capable &&
571 memcmp(priv->cfg_bssid, peer_mac, ETH_ALEN)) {
572 struct mwifiex_sta_node *sta_ptr;
573
574 spin_lock_irqsave(&priv->sta_list_spinlock, flags);
575 sta_ptr = mwifiex_get_sta_entry(priv, peer_mac);
576 if (!sta_ptr) {
577 spin_unlock_irqrestore(&priv->sta_list_spinlock, flags);
578 dev_warn(priv->adapter->dev,
579 "BA setup with unknown TDLS peer %pM!\n",
580 peer_mac);
581 return -1;
582 }
583 if (sta_ptr->is_11ac_enabled)
584 tx_win_size = MWIFIEX_11AC_STA_AMPDU_DEF_TXWINSIZE;
585 spin_unlock_irqrestore(&priv->sta_list_spinlock, flags);
586 }
587
588 block_ack_param_set = (u16)((tid << BLOCKACKPARAM_TID_POS) |
589 tx_win_size << BLOCKACKPARAM_WINSIZE_POS |
590 IMMEDIATE_BLOCK_ACK);
591
592 /* enable AMSDU inside AMPDU */
593 if (priv->add_ba_param.tx_amsdu &&
594 (priv->aggr_prio_tbl[tid].amsdu != BA_STREAM_NOT_ALLOWED))
595 block_ack_param_set |= BLOCKACKPARAM_AMSDU_SUPP_MASK;
596
597 add_ba_req.block_ack_param_set = cpu_to_le16(block_ack_param_set);
598 add_ba_req.block_ack_tmo = cpu_to_le16((u16)priv->add_ba_param.timeout);
599
600 ++dialog_tok;
601
602 if (dialog_tok == 0)
603 dialog_tok = 1;
604
605 add_ba_req.dialog_token = dialog_tok;
606 memcpy(&add_ba_req.peer_mac_addr, peer_mac, ETH_ALEN);
607
608 /* We don't wait for the response of this command */
609 ret = mwifiex_send_cmd(priv, HostCmd_CMD_11N_ADDBA_REQ,
610 0, 0, &add_ba_req, false);
611
612 return ret;
613 }
614
615 /*
616 * This function sends a delete BA request to the given TID/RA pair.
617 */
mwifiex_send_delba(struct mwifiex_private * priv,int tid,u8 * peer_mac,int initiator)618 int mwifiex_send_delba(struct mwifiex_private *priv, int tid, u8 *peer_mac,
619 int initiator)
620 {
621 struct host_cmd_ds_11n_delba delba;
622 int ret;
623 uint16_t del_ba_param_set;
624
625 memset(&delba, 0, sizeof(delba));
626 delba.del_ba_param_set = cpu_to_le16(tid << DELBA_TID_POS);
627
628 del_ba_param_set = le16_to_cpu(delba.del_ba_param_set);
629 if (initiator)
630 del_ba_param_set |= IEEE80211_DELBA_PARAM_INITIATOR_MASK;
631 else
632 del_ba_param_set &= ~IEEE80211_DELBA_PARAM_INITIATOR_MASK;
633
634 memcpy(&delba.peer_mac_addr, peer_mac, ETH_ALEN);
635
636 /* We don't wait for the response of this command */
637 ret = mwifiex_send_cmd(priv, HostCmd_CMD_11N_DELBA,
638 HostCmd_ACT_GEN_SET, 0, &delba, false);
639
640 return ret;
641 }
642
643 /*
644 * This function handles the command response of a delete BA request.
645 */
mwifiex_11n_delete_ba_stream(struct mwifiex_private * priv,u8 * del_ba)646 void mwifiex_11n_delete_ba_stream(struct mwifiex_private *priv, u8 *del_ba)
647 {
648 struct host_cmd_ds_11n_delba *cmd_del_ba =
649 (struct host_cmd_ds_11n_delba *) del_ba;
650 uint16_t del_ba_param_set = le16_to_cpu(cmd_del_ba->del_ba_param_set);
651 int tid;
652
653 tid = del_ba_param_set >> DELBA_TID_POS;
654
655 mwifiex_del_ba_tbl(priv, tid, cmd_del_ba->peer_mac_addr,
656 TYPE_DELBA_RECEIVE, INITIATOR_BIT(del_ba_param_set));
657 }
658
659 /*
660 * This function retrieves the Rx reordering table.
661 */
mwifiex_get_rx_reorder_tbl(struct mwifiex_private * priv,struct mwifiex_ds_rx_reorder_tbl * buf)662 int mwifiex_get_rx_reorder_tbl(struct mwifiex_private *priv,
663 struct mwifiex_ds_rx_reorder_tbl *buf)
664 {
665 int i;
666 struct mwifiex_ds_rx_reorder_tbl *rx_reo_tbl = buf;
667 struct mwifiex_rx_reorder_tbl *rx_reorder_tbl_ptr;
668 int count = 0;
669 unsigned long flags;
670
671 spin_lock_irqsave(&priv->rx_reorder_tbl_lock, flags);
672 list_for_each_entry(rx_reorder_tbl_ptr, &priv->rx_reorder_tbl_ptr,
673 list) {
674 rx_reo_tbl->tid = (u16) rx_reorder_tbl_ptr->tid;
675 memcpy(rx_reo_tbl->ta, rx_reorder_tbl_ptr->ta, ETH_ALEN);
676 rx_reo_tbl->start_win = rx_reorder_tbl_ptr->start_win;
677 rx_reo_tbl->win_size = rx_reorder_tbl_ptr->win_size;
678 for (i = 0; i < rx_reorder_tbl_ptr->win_size; ++i) {
679 if (rx_reorder_tbl_ptr->rx_reorder_ptr[i])
680 rx_reo_tbl->buffer[i] = true;
681 else
682 rx_reo_tbl->buffer[i] = false;
683 }
684 rx_reo_tbl++;
685 count++;
686
687 if (count >= MWIFIEX_MAX_RX_BASTREAM_SUPPORTED)
688 break;
689 }
690 spin_unlock_irqrestore(&priv->rx_reorder_tbl_lock, flags);
691
692 return count;
693 }
694
695 /*
696 * This function retrieves the Tx BA stream table.
697 */
mwifiex_get_tx_ba_stream_tbl(struct mwifiex_private * priv,struct mwifiex_ds_tx_ba_stream_tbl * buf)698 int mwifiex_get_tx_ba_stream_tbl(struct mwifiex_private *priv,
699 struct mwifiex_ds_tx_ba_stream_tbl *buf)
700 {
701 struct mwifiex_tx_ba_stream_tbl *tx_ba_tsr_tbl;
702 struct mwifiex_ds_tx_ba_stream_tbl *rx_reo_tbl = buf;
703 int count = 0;
704 unsigned long flags;
705
706 spin_lock_irqsave(&priv->tx_ba_stream_tbl_lock, flags);
707 list_for_each_entry(tx_ba_tsr_tbl, &priv->tx_ba_stream_tbl_ptr, list) {
708 rx_reo_tbl->tid = (u16) tx_ba_tsr_tbl->tid;
709 dev_dbg(priv->adapter->dev, "data: %s tid=%d\n",
710 __func__, rx_reo_tbl->tid);
711 memcpy(rx_reo_tbl->ra, tx_ba_tsr_tbl->ra, ETH_ALEN);
712 rx_reo_tbl->amsdu = tx_ba_tsr_tbl->amsdu;
713 rx_reo_tbl++;
714 count++;
715 if (count >= MWIFIEX_MAX_TX_BASTREAM_SUPPORTED)
716 break;
717 }
718 spin_unlock_irqrestore(&priv->tx_ba_stream_tbl_lock, flags);
719
720 return count;
721 }
722
723 /*
724 * This function retrieves the entry for specific tx BA stream table by RA and
725 * deletes it.
726 */
mwifiex_del_tx_ba_stream_tbl_by_ra(struct mwifiex_private * priv,u8 * ra)727 void mwifiex_del_tx_ba_stream_tbl_by_ra(struct mwifiex_private *priv, u8 *ra)
728 {
729 struct mwifiex_tx_ba_stream_tbl *tbl, *tmp;
730 unsigned long flags;
731
732 if (!ra)
733 return;
734
735 spin_lock_irqsave(&priv->tx_ba_stream_tbl_lock, flags);
736 list_for_each_entry_safe(tbl, tmp, &priv->tx_ba_stream_tbl_ptr, list) {
737 if (!memcmp(tbl->ra, ra, ETH_ALEN)) {
738 spin_unlock_irqrestore(&priv->tx_ba_stream_tbl_lock,
739 flags);
740 mwifiex_11n_delete_tx_ba_stream_tbl_entry(priv, tbl);
741 spin_lock_irqsave(&priv->tx_ba_stream_tbl_lock, flags);
742 }
743 }
744 spin_unlock_irqrestore(&priv->tx_ba_stream_tbl_lock, flags);
745
746 return;
747 }
748
749 /* This function initializes the BlockACK setup information for given
750 * mwifiex_private structure.
751 */
mwifiex_set_ba_params(struct mwifiex_private * priv)752 void mwifiex_set_ba_params(struct mwifiex_private *priv)
753 {
754 priv->add_ba_param.timeout = MWIFIEX_DEFAULT_BLOCK_ACK_TIMEOUT;
755
756 if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_UAP) {
757 priv->add_ba_param.tx_win_size =
758 MWIFIEX_UAP_AMPDU_DEF_TXWINSIZE;
759 priv->add_ba_param.rx_win_size =
760 MWIFIEX_UAP_AMPDU_DEF_RXWINSIZE;
761 } else {
762 priv->add_ba_param.tx_win_size =
763 MWIFIEX_STA_AMPDU_DEF_TXWINSIZE;
764 priv->add_ba_param.rx_win_size =
765 MWIFIEX_STA_AMPDU_DEF_RXWINSIZE;
766 }
767
768 priv->add_ba_param.tx_amsdu = true;
769 priv->add_ba_param.rx_amsdu = true;
770
771 return;
772 }
773
mwifiex_get_sec_chan_offset(int chan)774 u8 mwifiex_get_sec_chan_offset(int chan)
775 {
776 u8 sec_offset;
777
778 switch (chan) {
779 case 36:
780 case 44:
781 case 52:
782 case 60:
783 case 100:
784 case 108:
785 case 116:
786 case 124:
787 case 132:
788 case 140:
789 case 149:
790 case 157:
791 sec_offset = IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
792 break;
793 case 40:
794 case 48:
795 case 56:
796 case 64:
797 case 104:
798 case 112:
799 case 120:
800 case 128:
801 case 136:
802 case 144:
803 case 153:
804 case 161:
805 sec_offset = IEEE80211_HT_PARAM_CHA_SEC_BELOW;
806 break;
807 case 165:
808 default:
809 sec_offset = IEEE80211_HT_PARAM_CHA_SEC_NONE;
810 break;
811 }
812
813 return sec_offset;
814 }
815