1 /*
2 * NXP Wireless LAN device driver: 802.11n
3 *
4 * Copyright 2011-2020 NXP
5 *
6 * This software file (the "File") is distributed by NXP
7 * 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 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 *
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
88 spin_lock_bh(&priv->tx_ba_stream_tbl_lock);
89 list_for_each_entry(tx_ba_tsr_tbl, &priv->tx_ba_stream_tbl_ptr, list) {
90 if (tx_ba_tsr_tbl->ba_status == ba_status) {
91 spin_unlock_bh(&priv->tx_ba_stream_tbl_lock);
92 return tx_ba_tsr_tbl;
93 }
94 }
95 spin_unlock_bh(&priv->tx_ba_stream_tbl_lock);
96 return NULL;
97 }
98
99 /*
100 * This function handles the command response of delete a block
101 * ack request.
102 *
103 * The function checks the response success status and takes action
104 * accordingly (send an add BA request in case of success, or recreate
105 * the deleted stream in case of failure, if the add BA was also
106 * initiated by us).
107 */
mwifiex_ret_11n_delba(struct mwifiex_private * priv,struct host_cmd_ds_command * resp)108 int mwifiex_ret_11n_delba(struct mwifiex_private *priv,
109 struct host_cmd_ds_command *resp)
110 {
111 int tid;
112 struct mwifiex_tx_ba_stream_tbl *tx_ba_tbl;
113 struct host_cmd_ds_11n_delba *del_ba = &resp->params.del_ba;
114 uint16_t del_ba_param_set = le16_to_cpu(del_ba->del_ba_param_set);
115
116 tid = del_ba_param_set >> DELBA_TID_POS;
117 if (del_ba->del_result == BA_RESULT_SUCCESS) {
118 mwifiex_del_ba_tbl(priv, tid, del_ba->peer_mac_addr,
119 TYPE_DELBA_SENT,
120 INITIATOR_BIT(del_ba_param_set));
121
122 tx_ba_tbl = mwifiex_get_ba_status(priv, BA_SETUP_INPROGRESS);
123 if (tx_ba_tbl)
124 mwifiex_send_addba(priv, tx_ba_tbl->tid,
125 tx_ba_tbl->ra);
126 } else { /*
127 * In case of failure, recreate the deleted stream in case
128 * we initiated the ADDBA
129 */
130 if (!INITIATOR_BIT(del_ba_param_set))
131 return 0;
132
133 mwifiex_create_ba_tbl(priv, del_ba->peer_mac_addr, tid,
134 BA_SETUP_INPROGRESS);
135
136 tx_ba_tbl = mwifiex_get_ba_status(priv, BA_SETUP_INPROGRESS);
137
138 if (tx_ba_tbl)
139 mwifiex_del_ba_tbl(priv, tx_ba_tbl->tid, tx_ba_tbl->ra,
140 TYPE_DELBA_SENT, true);
141 }
142
143 return 0;
144 }
145
146 /*
147 * This function handles the command response of add a block
148 * ack request.
149 *
150 * Handling includes changing the header fields to CPU formats, checking
151 * the response success status and taking actions accordingly (delete the
152 * BA stream table in case of failure).
153 */
mwifiex_ret_11n_addba_req(struct mwifiex_private * priv,struct host_cmd_ds_command * resp)154 int mwifiex_ret_11n_addba_req(struct mwifiex_private *priv,
155 struct host_cmd_ds_command *resp)
156 {
157 int tid, tid_down;
158 struct host_cmd_ds_11n_addba_rsp *add_ba_rsp = &resp->params.add_ba_rsp;
159 struct mwifiex_tx_ba_stream_tbl *tx_ba_tbl;
160 struct mwifiex_ra_list_tbl *ra_list;
161 u16 block_ack_param_set = le16_to_cpu(add_ba_rsp->block_ack_param_set);
162
163 add_ba_rsp->ssn = cpu_to_le16((le16_to_cpu(add_ba_rsp->ssn))
164 & SSN_MASK);
165
166 tid = (block_ack_param_set & IEEE80211_ADDBA_PARAM_TID_MASK)
167 >> BLOCKACKPARAM_TID_POS;
168
169 tid_down = mwifiex_wmm_downgrade_tid(priv, tid);
170 ra_list = mwifiex_wmm_get_ralist_node(priv, tid_down, 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 mwifiex_dbg(priv->adapter, EVENT, "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 mwifiex_dbg(priv->adapter, ERROR, "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 mwifiex_dbg(priv->adapter, CMD,
228 "cmd: set tx_buf=%d\n", *buf_size);
229 tx_buf->buff_size = cpu_to_le16(*buf_size);
230 break;
231 case HostCmd_ACT_GEN_GET:
232 default:
233 tx_buf->buff_size = 0;
234 break;
235 }
236 return 0;
237 }
238
239 /*
240 * This function prepares command of AMSDU aggregation control.
241 *
242 * Preparation includes -
243 * - Setting command ID, action and proper size
244 * - Setting AMSDU control parameters (for SET only)
245 * - Ensuring correct endian-ness
246 */
mwifiex_cmd_amsdu_aggr_ctrl(struct host_cmd_ds_command * cmd,int cmd_action,struct mwifiex_ds_11n_amsdu_aggr_ctrl * aa_ctrl)247 int mwifiex_cmd_amsdu_aggr_ctrl(struct host_cmd_ds_command *cmd,
248 int cmd_action,
249 struct mwifiex_ds_11n_amsdu_aggr_ctrl *aa_ctrl)
250 {
251 struct host_cmd_ds_amsdu_aggr_ctrl *amsdu_ctrl =
252 &cmd->params.amsdu_aggr_ctrl;
253 u16 action = (u16) cmd_action;
254
255 cmd->command = cpu_to_le16(HostCmd_CMD_AMSDU_AGGR_CTRL);
256 cmd->size = cpu_to_le16(sizeof(struct host_cmd_ds_amsdu_aggr_ctrl)
257 + S_DS_GEN);
258 amsdu_ctrl->action = cpu_to_le16(action);
259 switch (action) {
260 case HostCmd_ACT_GEN_SET:
261 amsdu_ctrl->enable = cpu_to_le16(aa_ctrl->enable);
262 amsdu_ctrl->curr_buf_size = 0;
263 break;
264 case HostCmd_ACT_GEN_GET:
265 default:
266 amsdu_ctrl->curr_buf_size = 0;
267 break;
268 }
269 return 0;
270 }
271
272 /*
273 * This function prepares 11n configuration command.
274 *
275 * Preparation includes -
276 * - Setting command ID, action and proper size
277 * - Setting HT Tx capability and HT Tx information fields
278 * - Ensuring correct endian-ness
279 */
mwifiex_cmd_11n_cfg(struct mwifiex_private * priv,struct host_cmd_ds_command * cmd,u16 cmd_action,struct mwifiex_ds_11n_tx_cfg * txcfg)280 int mwifiex_cmd_11n_cfg(struct mwifiex_private *priv,
281 struct host_cmd_ds_command *cmd, u16 cmd_action,
282 struct mwifiex_ds_11n_tx_cfg *txcfg)
283 {
284 struct host_cmd_ds_11n_cfg *htcfg = &cmd->params.htcfg;
285
286 cmd->command = cpu_to_le16(HostCmd_CMD_11N_CFG);
287 cmd->size = cpu_to_le16(sizeof(struct host_cmd_ds_11n_cfg) + S_DS_GEN);
288 htcfg->action = cpu_to_le16(cmd_action);
289 htcfg->ht_tx_cap = cpu_to_le16(txcfg->tx_htcap);
290 htcfg->ht_tx_info = cpu_to_le16(txcfg->tx_htinfo);
291
292 if (priv->adapter->is_hw_11ac_capable)
293 htcfg->misc_config = cpu_to_le16(txcfg->misc_config);
294
295 return 0;
296 }
297
298 /*
299 * This function appends an 11n TLV to a buffer.
300 *
301 * Buffer allocation is responsibility of the calling
302 * function. No size validation is made here.
303 *
304 * The function fills up the following sections, if applicable -
305 * - HT capability IE
306 * - HT information IE (with channel list)
307 * - 20/40 BSS Coexistence IE
308 * - HT Extended Capabilities IE
309 */
310 int
mwifiex_cmd_append_11n_tlv(struct mwifiex_private * priv,struct mwifiex_bssdescriptor * bss_desc,u8 ** buffer)311 mwifiex_cmd_append_11n_tlv(struct mwifiex_private *priv,
312 struct mwifiex_bssdescriptor *bss_desc,
313 u8 **buffer)
314 {
315 struct mwifiex_ie_types_htcap *ht_cap;
316 struct mwifiex_ie_types_htinfo *ht_info;
317 struct mwifiex_ie_types_chan_list_param_set *chan_list;
318 struct mwifiex_ie_types_2040bssco *bss_co_2040;
319 struct mwifiex_ie_types_extcap *ext_cap;
320 int ret_len = 0;
321 struct ieee80211_supported_band *sband;
322 struct ieee_types_header *hdr;
323 u8 radio_type;
324
325 if (!buffer || !*buffer)
326 return ret_len;
327
328 radio_type = mwifiex_band_to_radio_type((u8) bss_desc->bss_band);
329 sband = priv->wdev.wiphy->bands[radio_type];
330
331 if (bss_desc->bcn_ht_cap) {
332 ht_cap = (struct mwifiex_ie_types_htcap *) *buffer;
333 memset(ht_cap, 0, sizeof(struct mwifiex_ie_types_htcap));
334 ht_cap->header.type = cpu_to_le16(WLAN_EID_HT_CAPABILITY);
335 ht_cap->header.len =
336 cpu_to_le16(sizeof(struct ieee80211_ht_cap));
337 memcpy((u8 *) ht_cap + sizeof(struct mwifiex_ie_types_header),
338 (u8 *)bss_desc->bcn_ht_cap,
339 le16_to_cpu(ht_cap->header.len));
340
341 mwifiex_fill_cap_info(priv, radio_type, &ht_cap->ht_cap);
342 /* Update HT40 capability from current channel information */
343 if (bss_desc->bcn_ht_oper) {
344 u8 ht_param = bss_desc->bcn_ht_oper->ht_param;
345 u8 radio =
346 mwifiex_band_to_radio_type(bss_desc->bss_band);
347 int freq =
348 ieee80211_channel_to_frequency(bss_desc->channel,
349 radio);
350 struct ieee80211_channel *chan =
351 ieee80211_get_channel(priv->adapter->wiphy, freq);
352
353 switch (ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) {
354 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
355 if (chan->flags & IEEE80211_CHAN_NO_HT40PLUS) {
356 ht_cap->ht_cap.cap_info &=
357 cpu_to_le16
358 (~IEEE80211_HT_CAP_SUP_WIDTH_20_40);
359 ht_cap->ht_cap.cap_info &=
360 cpu_to_le16(~IEEE80211_HT_CAP_SGI_40);
361 }
362 break;
363 case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
364 if (chan->flags & IEEE80211_CHAN_NO_HT40MINUS) {
365 ht_cap->ht_cap.cap_info &=
366 cpu_to_le16
367 (~IEEE80211_HT_CAP_SUP_WIDTH_20_40);
368 ht_cap->ht_cap.cap_info &=
369 cpu_to_le16(~IEEE80211_HT_CAP_SGI_40);
370 }
371 break;
372 }
373 }
374
375 *buffer += sizeof(struct mwifiex_ie_types_htcap);
376 ret_len += sizeof(struct mwifiex_ie_types_htcap);
377 }
378
379 if (bss_desc->bcn_ht_oper) {
380 if (priv->bss_mode == NL80211_IFTYPE_ADHOC) {
381 ht_info = (struct mwifiex_ie_types_htinfo *) *buffer;
382 memset(ht_info, 0,
383 sizeof(struct mwifiex_ie_types_htinfo));
384 ht_info->header.type =
385 cpu_to_le16(WLAN_EID_HT_OPERATION);
386 ht_info->header.len =
387 cpu_to_le16(
388 sizeof(struct ieee80211_ht_operation));
389
390 memcpy((u8 *) ht_info +
391 sizeof(struct mwifiex_ie_types_header),
392 (u8 *)bss_desc->bcn_ht_oper,
393 le16_to_cpu(ht_info->header.len));
394
395 if (!(sband->ht_cap.cap &
396 IEEE80211_HT_CAP_SUP_WIDTH_20_40))
397 ht_info->ht_oper.ht_param &=
398 ~(IEEE80211_HT_PARAM_CHAN_WIDTH_ANY |
399 IEEE80211_HT_PARAM_CHA_SEC_OFFSET);
400
401 *buffer += sizeof(struct mwifiex_ie_types_htinfo);
402 ret_len += sizeof(struct mwifiex_ie_types_htinfo);
403 }
404
405 chan_list =
406 (struct mwifiex_ie_types_chan_list_param_set *) *buffer;
407 memset(chan_list, 0,
408 sizeof(struct mwifiex_ie_types_chan_list_param_set));
409 chan_list->header.type = cpu_to_le16(TLV_TYPE_CHANLIST);
410 chan_list->header.len = cpu_to_le16(
411 sizeof(struct mwifiex_ie_types_chan_list_param_set) -
412 sizeof(struct mwifiex_ie_types_header));
413 chan_list->chan_scan_param[0].chan_number =
414 bss_desc->bcn_ht_oper->primary_chan;
415 chan_list->chan_scan_param[0].radio_type =
416 mwifiex_band_to_radio_type((u8) bss_desc->bss_band);
417
418 if (sband->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 &&
419 bss_desc->bcn_ht_oper->ht_param &
420 IEEE80211_HT_PARAM_CHAN_WIDTH_ANY)
421 SET_SECONDARYCHAN(chan_list->chan_scan_param[0].
422 radio_type,
423 (bss_desc->bcn_ht_oper->ht_param &
424 IEEE80211_HT_PARAM_CHA_SEC_OFFSET));
425
426 *buffer += sizeof(struct mwifiex_ie_types_chan_list_param_set);
427 ret_len += sizeof(struct mwifiex_ie_types_chan_list_param_set);
428 }
429
430 if (bss_desc->bcn_bss_co_2040) {
431 bss_co_2040 = (struct mwifiex_ie_types_2040bssco *) *buffer;
432 memset(bss_co_2040, 0,
433 sizeof(struct mwifiex_ie_types_2040bssco));
434 bss_co_2040->header.type = cpu_to_le16(WLAN_EID_BSS_COEX_2040);
435 bss_co_2040->header.len =
436 cpu_to_le16(sizeof(bss_co_2040->bss_co_2040));
437
438 memcpy((u8 *) bss_co_2040 +
439 sizeof(struct mwifiex_ie_types_header),
440 bss_desc->bcn_bss_co_2040 +
441 sizeof(struct ieee_types_header),
442 le16_to_cpu(bss_co_2040->header.len));
443
444 *buffer += sizeof(struct mwifiex_ie_types_2040bssco);
445 ret_len += sizeof(struct mwifiex_ie_types_2040bssco);
446 }
447
448 if (bss_desc->bcn_ext_cap) {
449 hdr = (void *)bss_desc->bcn_ext_cap;
450 ext_cap = (struct mwifiex_ie_types_extcap *) *buffer;
451 memset(ext_cap, 0, sizeof(struct mwifiex_ie_types_extcap));
452 ext_cap->header.type = cpu_to_le16(WLAN_EID_EXT_CAPABILITY);
453 ext_cap->header.len = cpu_to_le16(hdr->len);
454
455 memcpy((u8 *)ext_cap->ext_capab,
456 bss_desc->bcn_ext_cap + sizeof(struct ieee_types_header),
457 le16_to_cpu(ext_cap->header.len));
458
459 if (hdr->len > 3 &&
460 ext_cap->ext_capab[3] & WLAN_EXT_CAPA4_INTERWORKING_ENABLED)
461 priv->hs2_enabled = true;
462 else
463 priv->hs2_enabled = false;
464
465 *buffer += sizeof(struct mwifiex_ie_types_extcap) + hdr->len;
466 ret_len += sizeof(struct mwifiex_ie_types_extcap) + hdr->len;
467 }
468
469 return ret_len;
470 }
471
472 /*
473 * This function checks if the given pointer is valid entry of
474 * Tx BA Stream table.
475 */
mwifiex_is_tx_ba_stream_ptr_valid(struct mwifiex_private * priv,struct mwifiex_tx_ba_stream_tbl * tx_tbl_ptr)476 static int mwifiex_is_tx_ba_stream_ptr_valid(struct mwifiex_private *priv,
477 struct mwifiex_tx_ba_stream_tbl *tx_tbl_ptr)
478 {
479 struct mwifiex_tx_ba_stream_tbl *tx_ba_tsr_tbl;
480
481 list_for_each_entry(tx_ba_tsr_tbl, &priv->tx_ba_stream_tbl_ptr, list) {
482 if (tx_ba_tsr_tbl == tx_tbl_ptr)
483 return true;
484 }
485
486 return false;
487 }
488
489 /*
490 * This function deletes the given entry in Tx BA Stream table.
491 *
492 * The function also performs a validity check on the supplied
493 * pointer before trying to delete.
494 */
mwifiex_11n_delete_tx_ba_stream_tbl_entry(struct mwifiex_private * priv,struct mwifiex_tx_ba_stream_tbl * tx_ba_tsr_tbl)495 void mwifiex_11n_delete_tx_ba_stream_tbl_entry(struct mwifiex_private *priv,
496 struct mwifiex_tx_ba_stream_tbl *tx_ba_tsr_tbl)
497 {
498 if (!tx_ba_tsr_tbl &&
499 mwifiex_is_tx_ba_stream_ptr_valid(priv, tx_ba_tsr_tbl))
500 return;
501
502 mwifiex_dbg(priv->adapter, INFO,
503 "info: tx_ba_tsr_tbl %p\n", tx_ba_tsr_tbl);
504
505 list_del(&tx_ba_tsr_tbl->list);
506
507 kfree(tx_ba_tsr_tbl);
508 }
509
510 /*
511 * This function deletes all the entries in Tx BA Stream table.
512 */
mwifiex_11n_delete_all_tx_ba_stream_tbl(struct mwifiex_private * priv)513 void mwifiex_11n_delete_all_tx_ba_stream_tbl(struct mwifiex_private *priv)
514 {
515 int i;
516 struct mwifiex_tx_ba_stream_tbl *del_tbl_ptr, *tmp_node;
517
518 spin_lock_bh(&priv->tx_ba_stream_tbl_lock);
519 list_for_each_entry_safe(del_tbl_ptr, tmp_node,
520 &priv->tx_ba_stream_tbl_ptr, list)
521 mwifiex_11n_delete_tx_ba_stream_tbl_entry(priv, del_tbl_ptr);
522 spin_unlock_bh(&priv->tx_ba_stream_tbl_lock);
523
524 INIT_LIST_HEAD(&priv->tx_ba_stream_tbl_ptr);
525
526 for (i = 0; i < MAX_NUM_TID; ++i)
527 priv->aggr_prio_tbl[i].ampdu_ap =
528 priv->aggr_prio_tbl[i].ampdu_user;
529 }
530
531 /*
532 * This function returns the pointer to an entry in BA Stream
533 * table which matches the given RA/TID pair.
534 */
535 struct mwifiex_tx_ba_stream_tbl *
mwifiex_get_ba_tbl(struct mwifiex_private * priv,int tid,u8 * ra)536 mwifiex_get_ba_tbl(struct mwifiex_private *priv, int tid, u8 *ra)
537 {
538 struct mwifiex_tx_ba_stream_tbl *tx_ba_tsr_tbl;
539
540 spin_lock_bh(&priv->tx_ba_stream_tbl_lock);
541 list_for_each_entry(tx_ba_tsr_tbl, &priv->tx_ba_stream_tbl_ptr, list) {
542 if (ether_addr_equal_unaligned(tx_ba_tsr_tbl->ra, ra) &&
543 tx_ba_tsr_tbl->tid == tid) {
544 spin_unlock_bh(&priv->tx_ba_stream_tbl_lock);
545 return tx_ba_tsr_tbl;
546 }
547 }
548 spin_unlock_bh(&priv->tx_ba_stream_tbl_lock);
549 return NULL;
550 }
551
552 /*
553 * This function creates an entry in Tx BA stream table for the
554 * given RA/TID pair.
555 */
mwifiex_create_ba_tbl(struct mwifiex_private * priv,u8 * ra,int tid,enum mwifiex_ba_status ba_status)556 void mwifiex_create_ba_tbl(struct mwifiex_private *priv, u8 *ra, int tid,
557 enum mwifiex_ba_status ba_status)
558 {
559 struct mwifiex_tx_ba_stream_tbl *new_node;
560 struct mwifiex_ra_list_tbl *ra_list;
561 int tid_down;
562
563 if (!mwifiex_get_ba_tbl(priv, tid, ra)) {
564 new_node = kzalloc(sizeof(struct mwifiex_tx_ba_stream_tbl),
565 GFP_ATOMIC);
566 if (!new_node)
567 return;
568
569 tid_down = mwifiex_wmm_downgrade_tid(priv, tid);
570 ra_list = mwifiex_wmm_get_ralist_node(priv, tid_down, ra);
571 if (ra_list) {
572 ra_list->ba_status = ba_status;
573 ra_list->amsdu_in_ampdu = false;
574 }
575 INIT_LIST_HEAD(&new_node->list);
576
577 new_node->tid = tid;
578 new_node->ba_status = ba_status;
579 memcpy(new_node->ra, ra, ETH_ALEN);
580
581 spin_lock_bh(&priv->tx_ba_stream_tbl_lock);
582 list_add_tail(&new_node->list, &priv->tx_ba_stream_tbl_ptr);
583 spin_unlock_bh(&priv->tx_ba_stream_tbl_lock);
584 }
585 }
586
587 /*
588 * This function sends an add BA request to the given TID/RA pair.
589 */
mwifiex_send_addba(struct mwifiex_private * priv,int tid,u8 * peer_mac)590 int mwifiex_send_addba(struct mwifiex_private *priv, int tid, u8 *peer_mac)
591 {
592 struct host_cmd_ds_11n_addba_req add_ba_req;
593 u32 tx_win_size = priv->add_ba_param.tx_win_size;
594 static u8 dialog_tok;
595 int ret;
596 u16 block_ack_param_set;
597
598 mwifiex_dbg(priv->adapter, CMD, "cmd: %s: tid %d\n", __func__, tid);
599
600 memset(&add_ba_req, 0, sizeof(add_ba_req));
601
602 if ((GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA) &&
603 ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info) &&
604 priv->adapter->is_hw_11ac_capable &&
605 memcmp(priv->cfg_bssid, peer_mac, ETH_ALEN)) {
606 struct mwifiex_sta_node *sta_ptr;
607
608 spin_lock_bh(&priv->sta_list_spinlock);
609 sta_ptr = mwifiex_get_sta_entry(priv, peer_mac);
610 if (!sta_ptr) {
611 spin_unlock_bh(&priv->sta_list_spinlock);
612 mwifiex_dbg(priv->adapter, ERROR,
613 "BA setup with unknown TDLS peer %pM!\n",
614 peer_mac);
615 return -1;
616 }
617 if (sta_ptr->is_11ac_enabled)
618 tx_win_size = MWIFIEX_11AC_STA_AMPDU_DEF_TXWINSIZE;
619 spin_unlock_bh(&priv->sta_list_spinlock);
620 }
621
622 block_ack_param_set = (u16)((tid << BLOCKACKPARAM_TID_POS) |
623 tx_win_size << BLOCKACKPARAM_WINSIZE_POS |
624 IMMEDIATE_BLOCK_ACK);
625
626 /* enable AMSDU inside AMPDU */
627 if (priv->add_ba_param.tx_amsdu &&
628 (priv->aggr_prio_tbl[tid].amsdu != BA_STREAM_NOT_ALLOWED))
629 block_ack_param_set |= BLOCKACKPARAM_AMSDU_SUPP_MASK;
630
631 add_ba_req.block_ack_param_set = cpu_to_le16(block_ack_param_set);
632 add_ba_req.block_ack_tmo = cpu_to_le16((u16)priv->add_ba_param.timeout);
633
634 ++dialog_tok;
635
636 if (dialog_tok == 0)
637 dialog_tok = 1;
638
639 add_ba_req.dialog_token = dialog_tok;
640 memcpy(&add_ba_req.peer_mac_addr, peer_mac, ETH_ALEN);
641
642 /* We don't wait for the response of this command */
643 ret = mwifiex_send_cmd(priv, HostCmd_CMD_11N_ADDBA_REQ,
644 0, 0, &add_ba_req, false);
645
646 return ret;
647 }
648
649 /*
650 * This function sends a delete BA request to the given TID/RA pair.
651 */
mwifiex_send_delba(struct mwifiex_private * priv,int tid,u8 * peer_mac,int initiator)652 int mwifiex_send_delba(struct mwifiex_private *priv, int tid, u8 *peer_mac,
653 int initiator)
654 {
655 struct host_cmd_ds_11n_delba delba;
656 int ret;
657 uint16_t del_ba_param_set;
658
659 memset(&delba, 0, sizeof(delba));
660
661 del_ba_param_set = tid << DELBA_TID_POS;
662
663 if (initiator)
664 del_ba_param_set |= IEEE80211_DELBA_PARAM_INITIATOR_MASK;
665 else
666 del_ba_param_set &= ~IEEE80211_DELBA_PARAM_INITIATOR_MASK;
667
668 delba.del_ba_param_set = cpu_to_le16(del_ba_param_set);
669 memcpy(&delba.peer_mac_addr, peer_mac, ETH_ALEN);
670
671 /* We don't wait for the response of this command */
672 ret = mwifiex_send_cmd(priv, HostCmd_CMD_11N_DELBA,
673 HostCmd_ACT_GEN_SET, 0, &delba, false);
674
675 return ret;
676 }
677
678 /*
679 * This function sends delba to specific tid
680 */
mwifiex_11n_delba(struct mwifiex_private * priv,int tid)681 void mwifiex_11n_delba(struct mwifiex_private *priv, int tid)
682 {
683 struct mwifiex_rx_reorder_tbl *rx_reor_tbl_ptr;
684
685 spin_lock_bh(&priv->rx_reorder_tbl_lock);
686 list_for_each_entry(rx_reor_tbl_ptr, &priv->rx_reorder_tbl_ptr, list) {
687 if (rx_reor_tbl_ptr->tid == tid) {
688 dev_dbg(priv->adapter->dev,
689 "Send delba to tid=%d, %pM\n",
690 tid, rx_reor_tbl_ptr->ta);
691 mwifiex_send_delba(priv, tid, rx_reor_tbl_ptr->ta, 0);
692 goto exit;
693 }
694 }
695 exit:
696 spin_unlock_bh(&priv->rx_reorder_tbl_lock);
697 }
698
699 /*
700 * This function handles the command response of a delete BA request.
701 */
mwifiex_11n_delete_ba_stream(struct mwifiex_private * priv,u8 * del_ba)702 void mwifiex_11n_delete_ba_stream(struct mwifiex_private *priv, u8 *del_ba)
703 {
704 struct host_cmd_ds_11n_delba *cmd_del_ba =
705 (struct host_cmd_ds_11n_delba *) del_ba;
706 uint16_t del_ba_param_set = le16_to_cpu(cmd_del_ba->del_ba_param_set);
707 int tid;
708
709 tid = del_ba_param_set >> DELBA_TID_POS;
710
711 mwifiex_del_ba_tbl(priv, tid, cmd_del_ba->peer_mac_addr,
712 TYPE_DELBA_RECEIVE, INITIATOR_BIT(del_ba_param_set));
713 }
714
715 /*
716 * This function retrieves the Rx reordering table.
717 */
mwifiex_get_rx_reorder_tbl(struct mwifiex_private * priv,struct mwifiex_ds_rx_reorder_tbl * buf)718 int mwifiex_get_rx_reorder_tbl(struct mwifiex_private *priv,
719 struct mwifiex_ds_rx_reorder_tbl *buf)
720 {
721 int i;
722 struct mwifiex_ds_rx_reorder_tbl *rx_reo_tbl = buf;
723 struct mwifiex_rx_reorder_tbl *rx_reorder_tbl_ptr;
724 int count = 0;
725
726 spin_lock_bh(&priv->rx_reorder_tbl_lock);
727 list_for_each_entry(rx_reorder_tbl_ptr, &priv->rx_reorder_tbl_ptr,
728 list) {
729 rx_reo_tbl->tid = (u16) rx_reorder_tbl_ptr->tid;
730 memcpy(rx_reo_tbl->ta, rx_reorder_tbl_ptr->ta, ETH_ALEN);
731 rx_reo_tbl->start_win = rx_reorder_tbl_ptr->start_win;
732 rx_reo_tbl->win_size = rx_reorder_tbl_ptr->win_size;
733 for (i = 0; i < rx_reorder_tbl_ptr->win_size; ++i) {
734 if (rx_reorder_tbl_ptr->rx_reorder_ptr[i])
735 rx_reo_tbl->buffer[i] = true;
736 else
737 rx_reo_tbl->buffer[i] = false;
738 }
739 rx_reo_tbl++;
740 count++;
741
742 if (count >= MWIFIEX_MAX_RX_BASTREAM_SUPPORTED)
743 break;
744 }
745 spin_unlock_bh(&priv->rx_reorder_tbl_lock);
746
747 return count;
748 }
749
750 /*
751 * This function retrieves the Tx BA stream table.
752 */
mwifiex_get_tx_ba_stream_tbl(struct mwifiex_private * priv,struct mwifiex_ds_tx_ba_stream_tbl * buf)753 int mwifiex_get_tx_ba_stream_tbl(struct mwifiex_private *priv,
754 struct mwifiex_ds_tx_ba_stream_tbl *buf)
755 {
756 struct mwifiex_tx_ba_stream_tbl *tx_ba_tsr_tbl;
757 struct mwifiex_ds_tx_ba_stream_tbl *rx_reo_tbl = buf;
758 int count = 0;
759
760 spin_lock_bh(&priv->tx_ba_stream_tbl_lock);
761 list_for_each_entry(tx_ba_tsr_tbl, &priv->tx_ba_stream_tbl_ptr, list) {
762 rx_reo_tbl->tid = (u16) tx_ba_tsr_tbl->tid;
763 mwifiex_dbg(priv->adapter, DATA, "data: %s tid=%d\n",
764 __func__, rx_reo_tbl->tid);
765 memcpy(rx_reo_tbl->ra, tx_ba_tsr_tbl->ra, ETH_ALEN);
766 rx_reo_tbl->amsdu = tx_ba_tsr_tbl->amsdu;
767 rx_reo_tbl++;
768 count++;
769 if (count >= MWIFIEX_MAX_TX_BASTREAM_SUPPORTED)
770 break;
771 }
772 spin_unlock_bh(&priv->tx_ba_stream_tbl_lock);
773
774 return count;
775 }
776
777 /*
778 * This function retrieves the entry for specific tx BA stream table by RA and
779 * deletes it.
780 */
mwifiex_del_tx_ba_stream_tbl_by_ra(struct mwifiex_private * priv,u8 * ra)781 void mwifiex_del_tx_ba_stream_tbl_by_ra(struct mwifiex_private *priv, u8 *ra)
782 {
783 struct mwifiex_tx_ba_stream_tbl *tbl, *tmp;
784
785 if (!ra)
786 return;
787
788 spin_lock_bh(&priv->tx_ba_stream_tbl_lock);
789 list_for_each_entry_safe(tbl, tmp, &priv->tx_ba_stream_tbl_ptr, list)
790 if (!memcmp(tbl->ra, ra, ETH_ALEN))
791 mwifiex_11n_delete_tx_ba_stream_tbl_entry(priv, tbl);
792 spin_unlock_bh(&priv->tx_ba_stream_tbl_lock);
793
794 return;
795 }
796
797 /* This function initializes the BlockACK setup information for given
798 * mwifiex_private structure.
799 */
mwifiex_set_ba_params(struct mwifiex_private * priv)800 void mwifiex_set_ba_params(struct mwifiex_private *priv)
801 {
802 priv->add_ba_param.timeout = MWIFIEX_DEFAULT_BLOCK_ACK_TIMEOUT;
803
804 if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_UAP) {
805 priv->add_ba_param.tx_win_size =
806 MWIFIEX_UAP_AMPDU_DEF_TXWINSIZE;
807 priv->add_ba_param.rx_win_size =
808 MWIFIEX_UAP_AMPDU_DEF_RXWINSIZE;
809 } else {
810 priv->add_ba_param.tx_win_size =
811 MWIFIEX_STA_AMPDU_DEF_TXWINSIZE;
812 priv->add_ba_param.rx_win_size =
813 MWIFIEX_STA_AMPDU_DEF_RXWINSIZE;
814 }
815
816 priv->add_ba_param.tx_amsdu = true;
817 priv->add_ba_param.rx_amsdu = true;
818
819 return;
820 }
821
mwifiex_get_sec_chan_offset(int chan)822 u8 mwifiex_get_sec_chan_offset(int chan)
823 {
824 u8 sec_offset;
825
826 switch (chan) {
827 case 36:
828 case 44:
829 case 52:
830 case 60:
831 case 100:
832 case 108:
833 case 116:
834 case 124:
835 case 132:
836 case 140:
837 case 149:
838 case 157:
839 sec_offset = IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
840 break;
841 case 40:
842 case 48:
843 case 56:
844 case 64:
845 case 104:
846 case 112:
847 case 120:
848 case 128:
849 case 136:
850 case 144:
851 case 153:
852 case 161:
853 sec_offset = IEEE80211_HT_PARAM_CHA_SEC_BELOW;
854 break;
855 case 165:
856 default:
857 sec_offset = IEEE80211_HT_PARAM_CHA_SEC_NONE;
858 break;
859 }
860
861 return sec_offset;
862 }
863
864 /* This function will send DELBA to entries in the priv's
865 * Tx BA stream table
866 */
867 static void
mwifiex_send_delba_txbastream_tbl(struct mwifiex_private * priv,u8 tid)868 mwifiex_send_delba_txbastream_tbl(struct mwifiex_private *priv, u8 tid)
869 {
870 struct mwifiex_adapter *adapter = priv->adapter;
871 struct mwifiex_tx_ba_stream_tbl *tx_ba_stream_tbl_ptr;
872
873 list_for_each_entry(tx_ba_stream_tbl_ptr,
874 &priv->tx_ba_stream_tbl_ptr, list) {
875 if (tx_ba_stream_tbl_ptr->ba_status == BA_SETUP_COMPLETE) {
876 if (tid == tx_ba_stream_tbl_ptr->tid) {
877 dev_dbg(adapter->dev,
878 "Tx:Send delba to tid=%d, %pM\n", tid,
879 tx_ba_stream_tbl_ptr->ra);
880 mwifiex_send_delba(priv,
881 tx_ba_stream_tbl_ptr->tid,
882 tx_ba_stream_tbl_ptr->ra, 1);
883 return;
884 }
885 }
886 }
887 }
888
889 /* This function updates all the tx_win_size
890 */
mwifiex_update_ampdu_txwinsize(struct mwifiex_adapter * adapter)891 void mwifiex_update_ampdu_txwinsize(struct mwifiex_adapter *adapter)
892 {
893 u8 i;
894 u32 tx_win_size;
895 struct mwifiex_private *priv;
896
897 for (i = 0; i < adapter->priv_num; i++) {
898 if (!adapter->priv[i])
899 continue;
900 priv = adapter->priv[i];
901 tx_win_size = priv->add_ba_param.tx_win_size;
902
903 if (priv->bss_type == MWIFIEX_BSS_TYPE_STA)
904 priv->add_ba_param.tx_win_size =
905 MWIFIEX_STA_AMPDU_DEF_TXWINSIZE;
906
907 if (priv->bss_type == MWIFIEX_BSS_TYPE_P2P)
908 priv->add_ba_param.tx_win_size =
909 MWIFIEX_STA_AMPDU_DEF_TXWINSIZE;
910
911 if (priv->bss_type == MWIFIEX_BSS_TYPE_UAP)
912 priv->add_ba_param.tx_win_size =
913 MWIFIEX_UAP_AMPDU_DEF_TXWINSIZE;
914
915 if (adapter->coex_win_size) {
916 if (adapter->coex_tx_win_size)
917 priv->add_ba_param.tx_win_size =
918 adapter->coex_tx_win_size;
919 }
920
921 if (tx_win_size != priv->add_ba_param.tx_win_size) {
922 if (!priv->media_connected)
923 continue;
924 for (i = 0; i < MAX_NUM_TID; i++)
925 mwifiex_send_delba_txbastream_tbl(priv, i);
926 }
927 }
928 }
929