1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * NXP Wireless LAN device driver: 802.11n
4 *
5 * Copyright 2011-2020 NXP
6 */
7
8 #include "decl.h"
9 #include "ioctl.h"
10 #include "util.h"
11 #include "fw.h"
12 #include "main.h"
13 #include "wmm.h"
14 #include "11n.h"
15
16 /*
17 * Fills HT capability information field, AMPDU Parameters field, HT extended
18 * capability field, and supported MCS set fields.
19 *
20 * HT capability information field, AMPDU Parameters field, supported MCS set
21 * fields are retrieved from cfg80211 stack
22 *
23 * RD responder bit to set to clear in the extended capability header.
24 */
mwifiex_fill_cap_info(struct mwifiex_private * priv,u8 radio_type,struct ieee80211_ht_cap * ht_cap)25 int mwifiex_fill_cap_info(struct mwifiex_private *priv, u8 radio_type,
26 struct ieee80211_ht_cap *ht_cap)
27 {
28 uint16_t ht_ext_cap = le16_to_cpu(ht_cap->extended_ht_cap_info);
29 struct ieee80211_supported_band *sband =
30 priv->wdev.wiphy->bands[radio_type];
31
32 if (WARN_ON_ONCE(!sband)) {
33 mwifiex_dbg(priv->adapter, ERROR, "Invalid radio type!\n");
34 return -EINVAL;
35 }
36
37 ht_cap->ampdu_params_info =
38 (sband->ht_cap.ampdu_factor &
39 IEEE80211_HT_AMPDU_PARM_FACTOR) |
40 ((sband->ht_cap.ampdu_density <<
41 IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT) &
42 IEEE80211_HT_AMPDU_PARM_DENSITY);
43
44 memcpy((u8 *)&ht_cap->mcs, &sband->ht_cap.mcs,
45 sizeof(sband->ht_cap.mcs));
46
47 if (priv->bss_mode == NL80211_IFTYPE_STATION ||
48 (sband->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 &&
49 (priv->adapter->sec_chan_offset !=
50 IEEE80211_HT_PARAM_CHA_SEC_NONE)))
51 /* Set MCS32 for infra mode or ad-hoc mode with 40MHz support */
52 SETHT_MCS32(ht_cap->mcs.rx_mask);
53
54 /* Clear RD responder bit */
55 ht_ext_cap &= ~IEEE80211_HT_EXT_CAP_RD_RESPONDER;
56
57 ht_cap->cap_info = cpu_to_le16(sband->ht_cap.cap);
58 ht_cap->extended_ht_cap_info = cpu_to_le16(ht_ext_cap);
59
60 if (ISSUPP_BEAMFORMING(priv->adapter->hw_dot_11n_dev_cap))
61 ht_cap->tx_BF_cap_info = cpu_to_le32(MWIFIEX_DEF_11N_TX_BF_CAP);
62
63 return 0;
64 }
65
66 /*
67 * This function returns the pointer to an entry in BA Stream
68 * table which matches the requested BA status.
69 */
70 static struct mwifiex_tx_ba_stream_tbl *
mwifiex_get_ba_status(struct mwifiex_private * priv,enum mwifiex_ba_status ba_status)71 mwifiex_get_ba_status(struct mwifiex_private *priv,
72 enum mwifiex_ba_status ba_status)
73 {
74 struct mwifiex_tx_ba_stream_tbl *tx_ba_tsr_tbl;
75
76 spin_lock_bh(&priv->tx_ba_stream_tbl_lock);
77 list_for_each_entry(tx_ba_tsr_tbl, &priv->tx_ba_stream_tbl_ptr, list) {
78 if (tx_ba_tsr_tbl->ba_status == ba_status) {
79 spin_unlock_bh(&priv->tx_ba_stream_tbl_lock);
80 return tx_ba_tsr_tbl;
81 }
82 }
83 spin_unlock_bh(&priv->tx_ba_stream_tbl_lock);
84 return NULL;
85 }
86
87 /*
88 * This function handles the command response of delete a block
89 * ack request.
90 *
91 * The function checks the response success status and takes action
92 * accordingly (send an add BA request in case of success, or recreate
93 * the deleted stream in case of failure, if the add BA was also
94 * initiated by us).
95 */
mwifiex_ret_11n_delba(struct mwifiex_private * priv,struct host_cmd_ds_command * resp)96 int mwifiex_ret_11n_delba(struct mwifiex_private *priv,
97 struct host_cmd_ds_command *resp)
98 {
99 int tid;
100 struct mwifiex_tx_ba_stream_tbl *tx_ba_tbl;
101 struct host_cmd_ds_11n_delba *del_ba = &resp->params.del_ba;
102 uint16_t del_ba_param_set = le16_to_cpu(del_ba->del_ba_param_set);
103
104 tid = del_ba_param_set >> DELBA_TID_POS;
105 if (del_ba->del_result == BA_RESULT_SUCCESS) {
106 mwifiex_del_ba_tbl(priv, tid, del_ba->peer_mac_addr,
107 TYPE_DELBA_SENT,
108 INITIATOR_BIT(del_ba_param_set));
109
110 tx_ba_tbl = mwifiex_get_ba_status(priv, BA_SETUP_INPROGRESS);
111 if (tx_ba_tbl)
112 mwifiex_send_addba(priv, tx_ba_tbl->tid,
113 tx_ba_tbl->ra);
114 } else { /*
115 * In case of failure, recreate the deleted stream in case
116 * we initiated the DELBA
117 */
118 if (!INITIATOR_BIT(del_ba_param_set))
119 return 0;
120
121 mwifiex_create_ba_tbl(priv, del_ba->peer_mac_addr, tid,
122 BA_SETUP_INPROGRESS);
123
124 tx_ba_tbl = mwifiex_get_ba_status(priv, BA_SETUP_INPROGRESS);
125
126 if (tx_ba_tbl)
127 mwifiex_del_ba_tbl(priv, tx_ba_tbl->tid, tx_ba_tbl->ra,
128 TYPE_DELBA_SENT, true);
129 }
130
131 return 0;
132 }
133
134 /*
135 * This function handles the command response of add a block
136 * ack request.
137 *
138 * Handling includes changing the header fields to CPU formats, checking
139 * the response success status and taking actions accordingly (delete the
140 * BA stream table in case of failure).
141 */
mwifiex_ret_11n_addba_req(struct mwifiex_private * priv,struct host_cmd_ds_command * resp)142 int mwifiex_ret_11n_addba_req(struct mwifiex_private *priv,
143 struct host_cmd_ds_command *resp)
144 {
145 int tid, tid_down;
146 struct host_cmd_ds_11n_addba_rsp *add_ba_rsp = &resp->params.add_ba_rsp;
147 struct mwifiex_tx_ba_stream_tbl *tx_ba_tbl;
148 struct mwifiex_ra_list_tbl *ra_list;
149 u16 block_ack_param_set = le16_to_cpu(add_ba_rsp->block_ack_param_set);
150
151 add_ba_rsp->ssn = cpu_to_le16((le16_to_cpu(add_ba_rsp->ssn))
152 & SSN_MASK);
153
154 tid = (block_ack_param_set & IEEE80211_ADDBA_PARAM_TID_MASK)
155 >> BLOCKACKPARAM_TID_POS;
156
157 tid_down = mwifiex_wmm_downgrade_tid(priv, tid);
158 ra_list = mwifiex_wmm_get_ralist_node(priv, tid_down, add_ba_rsp->
159 peer_mac_addr);
160 if (le16_to_cpu(add_ba_rsp->status_code) != BA_RESULT_SUCCESS) {
161 if (ra_list) {
162 ra_list->ba_status = BA_SETUP_NONE;
163 ra_list->amsdu_in_ampdu = false;
164 }
165 mwifiex_del_ba_tbl(priv, tid, add_ba_rsp->peer_mac_addr,
166 TYPE_DELBA_SENT, true);
167 if (add_ba_rsp->add_rsp_result != BA_RESULT_TIMEOUT)
168 priv->aggr_prio_tbl[tid].ampdu_ap =
169 BA_STREAM_NOT_ALLOWED;
170 return 0;
171 }
172
173 tx_ba_tbl = mwifiex_get_ba_tbl(priv, tid, add_ba_rsp->peer_mac_addr);
174 if (tx_ba_tbl) {
175 mwifiex_dbg(priv->adapter, EVENT, "info: BA stream complete\n");
176 tx_ba_tbl->ba_status = BA_SETUP_COMPLETE;
177 if ((block_ack_param_set & BLOCKACKPARAM_AMSDU_SUPP_MASK) &&
178 priv->add_ba_param.tx_amsdu &&
179 (priv->aggr_prio_tbl[tid].amsdu != BA_STREAM_NOT_ALLOWED))
180 tx_ba_tbl->amsdu = true;
181 else
182 tx_ba_tbl->amsdu = false;
183 if (ra_list) {
184 ra_list->amsdu_in_ampdu = tx_ba_tbl->amsdu;
185 ra_list->ba_status = BA_SETUP_COMPLETE;
186 }
187 } else {
188 mwifiex_dbg(priv->adapter, ERROR, "BA stream not created\n");
189 }
190
191 return 0;
192 }
193
194 /*
195 * This function prepares command of reconfigure Tx buffer.
196 *
197 * Preparation includes -
198 * - Setting command ID, action and proper size
199 * - Setting Tx buffer size (for SET only)
200 * - Ensuring correct endian-ness
201 */
mwifiex_cmd_recfg_tx_buf(struct mwifiex_private * priv,struct host_cmd_ds_command * cmd,int cmd_action,u16 * buf_size)202 int mwifiex_cmd_recfg_tx_buf(struct mwifiex_private *priv,
203 struct host_cmd_ds_command *cmd, int cmd_action,
204 u16 *buf_size)
205 {
206 struct host_cmd_ds_txbuf_cfg *tx_buf = &cmd->params.tx_buf;
207 u16 action = (u16) cmd_action;
208
209 cmd->command = cpu_to_le16(HostCmd_CMD_RECONFIGURE_TX_BUFF);
210 cmd->size =
211 cpu_to_le16(sizeof(struct host_cmd_ds_txbuf_cfg) + S_DS_GEN);
212 tx_buf->action = cpu_to_le16(action);
213 switch (action) {
214 case HostCmd_ACT_GEN_SET:
215 mwifiex_dbg(priv->adapter, CMD,
216 "cmd: set tx_buf=%d\n", *buf_size);
217 tx_buf->buff_size = cpu_to_le16(*buf_size);
218 break;
219 case HostCmd_ACT_GEN_GET:
220 default:
221 tx_buf->buff_size = 0;
222 break;
223 }
224 return 0;
225 }
226
227 /*
228 * This function prepares command of AMSDU aggregation control.
229 *
230 * Preparation includes -
231 * - Setting command ID, action and proper size
232 * - Setting AMSDU control parameters (for SET only)
233 * - Ensuring correct endian-ness
234 */
mwifiex_cmd_amsdu_aggr_ctrl(struct host_cmd_ds_command * cmd,int cmd_action,struct mwifiex_ds_11n_amsdu_aggr_ctrl * aa_ctrl)235 int mwifiex_cmd_amsdu_aggr_ctrl(struct host_cmd_ds_command *cmd,
236 int cmd_action,
237 struct mwifiex_ds_11n_amsdu_aggr_ctrl *aa_ctrl)
238 {
239 struct host_cmd_ds_amsdu_aggr_ctrl *amsdu_ctrl =
240 &cmd->params.amsdu_aggr_ctrl;
241 u16 action = (u16) cmd_action;
242
243 cmd->command = cpu_to_le16(HostCmd_CMD_AMSDU_AGGR_CTRL);
244 cmd->size = cpu_to_le16(sizeof(struct host_cmd_ds_amsdu_aggr_ctrl)
245 + S_DS_GEN);
246 amsdu_ctrl->action = cpu_to_le16(action);
247 switch (action) {
248 case HostCmd_ACT_GEN_SET:
249 amsdu_ctrl->enable = cpu_to_le16(aa_ctrl->enable);
250 amsdu_ctrl->curr_buf_size = 0;
251 break;
252 case HostCmd_ACT_GEN_GET:
253 default:
254 amsdu_ctrl->curr_buf_size = 0;
255 break;
256 }
257 return 0;
258 }
259
260 /*
261 * This function prepares 11n configuration command.
262 *
263 * Preparation includes -
264 * - Setting command ID, action and proper size
265 * - Setting HT Tx capability and HT Tx information fields
266 * - Ensuring correct endian-ness
267 */
mwifiex_cmd_11n_cfg(struct mwifiex_private * priv,struct host_cmd_ds_command * cmd,u16 cmd_action,struct mwifiex_ds_11n_tx_cfg * txcfg)268 int mwifiex_cmd_11n_cfg(struct mwifiex_private *priv,
269 struct host_cmd_ds_command *cmd, u16 cmd_action,
270 struct mwifiex_ds_11n_tx_cfg *txcfg)
271 {
272 struct host_cmd_ds_11n_cfg *htcfg = &cmd->params.htcfg;
273
274 cmd->command = cpu_to_le16(HostCmd_CMD_11N_CFG);
275 cmd->size = cpu_to_le16(sizeof(struct host_cmd_ds_11n_cfg) + S_DS_GEN);
276 htcfg->action = cpu_to_le16(cmd_action);
277 htcfg->ht_tx_cap = cpu_to_le16(txcfg->tx_htcap);
278 htcfg->ht_tx_info = cpu_to_le16(txcfg->tx_htinfo);
279
280 if (priv->adapter->is_hw_11ac_capable)
281 htcfg->misc_config = cpu_to_le16(txcfg->misc_config);
282
283 return 0;
284 }
285
286 /*
287 * This function appends an 11n TLV to a buffer.
288 *
289 * Buffer allocation is responsibility of the calling
290 * function. No size validation is made here.
291 *
292 * The function fills up the following sections, if applicable -
293 * - HT capability IE
294 * - HT information IE (with channel list)
295 * - 20/40 BSS Coexistence IE
296 * - HT Extended Capabilities IE
297 */
298 int
mwifiex_cmd_append_11n_tlv(struct mwifiex_private * priv,struct mwifiex_bssdescriptor * bss_desc,u8 ** buffer)299 mwifiex_cmd_append_11n_tlv(struct mwifiex_private *priv,
300 struct mwifiex_bssdescriptor *bss_desc,
301 u8 **buffer)
302 {
303 struct mwifiex_ie_types_htcap *ht_cap;
304 struct mwifiex_ie_types_htinfo *ht_info;
305 struct mwifiex_ie_types_chan_list_param_set *chan_list;
306 struct mwifiex_ie_types_2040bssco *bss_co_2040;
307 struct mwifiex_ie_types_extcap *ext_cap;
308 int ret_len = 0;
309 struct ieee80211_supported_band *sband;
310 struct ieee_types_header *hdr;
311 u8 radio_type;
312
313 if (!buffer || !*buffer)
314 return ret_len;
315
316 radio_type = mwifiex_band_to_radio_type((u8) bss_desc->bss_band);
317 sband = priv->wdev.wiphy->bands[radio_type];
318
319 if (bss_desc->bcn_ht_cap) {
320 ht_cap = (struct mwifiex_ie_types_htcap *) *buffer;
321 memset(ht_cap, 0, sizeof(struct mwifiex_ie_types_htcap));
322 ht_cap->header.type = cpu_to_le16(WLAN_EID_HT_CAPABILITY);
323 ht_cap->header.len =
324 cpu_to_le16(sizeof(struct ieee80211_ht_cap));
325 memcpy((u8 *) ht_cap + sizeof(struct mwifiex_ie_types_header),
326 (u8 *)bss_desc->bcn_ht_cap,
327 le16_to_cpu(ht_cap->header.len));
328
329 mwifiex_fill_cap_info(priv, radio_type, &ht_cap->ht_cap);
330 /* Update HT40 capability from current channel information */
331 if (bss_desc->bcn_ht_oper) {
332 u8 ht_param = bss_desc->bcn_ht_oper->ht_param;
333 u8 radio =
334 mwifiex_band_to_radio_type(bss_desc->bss_band);
335 int freq =
336 ieee80211_channel_to_frequency(bss_desc->channel,
337 radio);
338 struct ieee80211_channel *chan =
339 ieee80211_get_channel(priv->adapter->wiphy, freq);
340
341 switch (ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) {
342 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
343 if (chan->flags & IEEE80211_CHAN_NO_HT40PLUS) {
344 ht_cap->ht_cap.cap_info &=
345 cpu_to_le16
346 (~IEEE80211_HT_CAP_SUP_WIDTH_20_40);
347 ht_cap->ht_cap.cap_info &=
348 cpu_to_le16(~IEEE80211_HT_CAP_SGI_40);
349 }
350 break;
351 case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
352 if (chan->flags & IEEE80211_CHAN_NO_HT40MINUS) {
353 ht_cap->ht_cap.cap_info &=
354 cpu_to_le16
355 (~IEEE80211_HT_CAP_SUP_WIDTH_20_40);
356 ht_cap->ht_cap.cap_info &=
357 cpu_to_le16(~IEEE80211_HT_CAP_SGI_40);
358 }
359 break;
360 }
361 }
362
363 *buffer += sizeof(struct mwifiex_ie_types_htcap);
364 ret_len += sizeof(struct mwifiex_ie_types_htcap);
365 }
366
367 if (bss_desc->bcn_ht_oper) {
368 if (priv->bss_mode == NL80211_IFTYPE_ADHOC) {
369 ht_info = (struct mwifiex_ie_types_htinfo *) *buffer;
370 memset(ht_info, 0,
371 sizeof(struct mwifiex_ie_types_htinfo));
372 ht_info->header.type =
373 cpu_to_le16(WLAN_EID_HT_OPERATION);
374 ht_info->header.len =
375 cpu_to_le16(
376 sizeof(struct ieee80211_ht_operation));
377
378 memcpy((u8 *) ht_info +
379 sizeof(struct mwifiex_ie_types_header),
380 (u8 *)bss_desc->bcn_ht_oper,
381 le16_to_cpu(ht_info->header.len));
382
383 if (!(sband->ht_cap.cap &
384 IEEE80211_HT_CAP_SUP_WIDTH_20_40))
385 ht_info->ht_oper.ht_param &=
386 ~(IEEE80211_HT_PARAM_CHAN_WIDTH_ANY |
387 IEEE80211_HT_PARAM_CHA_SEC_OFFSET);
388
389 *buffer += sizeof(struct mwifiex_ie_types_htinfo);
390 ret_len += sizeof(struct mwifiex_ie_types_htinfo);
391 }
392
393 chan_list =
394 (struct mwifiex_ie_types_chan_list_param_set *) *buffer;
395 memset(chan_list, 0,
396 sizeof(struct mwifiex_ie_types_chan_list_param_set));
397 chan_list->header.type = cpu_to_le16(TLV_TYPE_CHANLIST);
398 chan_list->header.len = cpu_to_le16(
399 sizeof(struct mwifiex_ie_types_chan_list_param_set) -
400 sizeof(struct mwifiex_ie_types_header));
401 chan_list->chan_scan_param[0].chan_number =
402 bss_desc->bcn_ht_oper->primary_chan;
403 chan_list->chan_scan_param[0].radio_type =
404 mwifiex_band_to_radio_type((u8) bss_desc->bss_band);
405
406 if (sband->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 &&
407 bss_desc->bcn_ht_oper->ht_param &
408 IEEE80211_HT_PARAM_CHAN_WIDTH_ANY)
409 SET_SECONDARYCHAN(chan_list->chan_scan_param[0].
410 radio_type,
411 (bss_desc->bcn_ht_oper->ht_param &
412 IEEE80211_HT_PARAM_CHA_SEC_OFFSET));
413
414 *buffer += sizeof(struct mwifiex_ie_types_chan_list_param_set);
415 ret_len += sizeof(struct mwifiex_ie_types_chan_list_param_set);
416 }
417
418 if (bss_desc->bcn_bss_co_2040) {
419 bss_co_2040 = (struct mwifiex_ie_types_2040bssco *) *buffer;
420 memset(bss_co_2040, 0,
421 sizeof(struct mwifiex_ie_types_2040bssco));
422 bss_co_2040->header.type = cpu_to_le16(WLAN_EID_BSS_COEX_2040);
423 bss_co_2040->header.len =
424 cpu_to_le16(sizeof(bss_co_2040->bss_co_2040));
425
426 memcpy((u8 *) bss_co_2040 +
427 sizeof(struct mwifiex_ie_types_header),
428 bss_desc->bcn_bss_co_2040 +
429 sizeof(struct ieee_types_header),
430 le16_to_cpu(bss_co_2040->header.len));
431
432 *buffer += sizeof(struct mwifiex_ie_types_2040bssco);
433 ret_len += sizeof(struct mwifiex_ie_types_2040bssco);
434 }
435
436 if (bss_desc->bcn_ext_cap) {
437 hdr = (void *)bss_desc->bcn_ext_cap;
438 ext_cap = (struct mwifiex_ie_types_extcap *) *buffer;
439 memset(ext_cap, 0, sizeof(struct mwifiex_ie_types_extcap));
440 ext_cap->header.type = cpu_to_le16(WLAN_EID_EXT_CAPABILITY);
441 ext_cap->header.len = cpu_to_le16(hdr->len);
442
443 memcpy((u8 *)ext_cap->ext_capab,
444 bss_desc->bcn_ext_cap + sizeof(struct ieee_types_header),
445 le16_to_cpu(ext_cap->header.len));
446
447 if (hdr->len > 3 &&
448 ext_cap->ext_capab[3] & WLAN_EXT_CAPA4_INTERWORKING_ENABLED)
449 priv->hs2_enabled = true;
450 else
451 priv->hs2_enabled = false;
452
453 *buffer += sizeof(struct mwifiex_ie_types_extcap) + hdr->len;
454 ret_len += sizeof(struct mwifiex_ie_types_extcap) + hdr->len;
455 }
456
457 return ret_len;
458 }
459
460 /*
461 * This function checks if the given pointer is valid entry of
462 * Tx BA Stream table.
463 */
mwifiex_is_tx_ba_stream_ptr_valid(struct mwifiex_private * priv,struct mwifiex_tx_ba_stream_tbl * tx_tbl_ptr)464 static int mwifiex_is_tx_ba_stream_ptr_valid(struct mwifiex_private *priv,
465 struct mwifiex_tx_ba_stream_tbl *tx_tbl_ptr)
466 {
467 struct mwifiex_tx_ba_stream_tbl *tx_ba_tsr_tbl;
468
469 list_for_each_entry(tx_ba_tsr_tbl, &priv->tx_ba_stream_tbl_ptr, list) {
470 if (tx_ba_tsr_tbl == tx_tbl_ptr)
471 return true;
472 }
473
474 return false;
475 }
476
477 /*
478 * This function deletes the given entry in Tx BA Stream table.
479 *
480 * The function also performs a validity check on the supplied
481 * pointer before trying to delete.
482 */
mwifiex_11n_delete_tx_ba_stream_tbl_entry(struct mwifiex_private * priv,struct mwifiex_tx_ba_stream_tbl * tx_ba_tsr_tbl)483 void mwifiex_11n_delete_tx_ba_stream_tbl_entry(struct mwifiex_private *priv,
484 struct mwifiex_tx_ba_stream_tbl *tx_ba_tsr_tbl)
485 {
486 if (!tx_ba_tsr_tbl &&
487 mwifiex_is_tx_ba_stream_ptr_valid(priv, tx_ba_tsr_tbl))
488 return;
489
490 mwifiex_dbg(priv->adapter, INFO,
491 "info: tx_ba_tsr_tbl %p\n", tx_ba_tsr_tbl);
492
493 list_del(&tx_ba_tsr_tbl->list);
494
495 kfree(tx_ba_tsr_tbl);
496 }
497
498 /*
499 * This function deletes all the entries in Tx BA Stream table.
500 */
mwifiex_11n_delete_all_tx_ba_stream_tbl(struct mwifiex_private * priv)501 void mwifiex_11n_delete_all_tx_ba_stream_tbl(struct mwifiex_private *priv)
502 {
503 int i;
504 struct mwifiex_tx_ba_stream_tbl *del_tbl_ptr, *tmp_node;
505
506 spin_lock_bh(&priv->tx_ba_stream_tbl_lock);
507 list_for_each_entry_safe(del_tbl_ptr, tmp_node,
508 &priv->tx_ba_stream_tbl_ptr, list)
509 mwifiex_11n_delete_tx_ba_stream_tbl_entry(priv, del_tbl_ptr);
510 spin_unlock_bh(&priv->tx_ba_stream_tbl_lock);
511
512 INIT_LIST_HEAD(&priv->tx_ba_stream_tbl_ptr);
513
514 for (i = 0; i < MAX_NUM_TID; ++i)
515 priv->aggr_prio_tbl[i].ampdu_ap =
516 priv->aggr_prio_tbl[i].ampdu_user;
517 }
518
519 /*
520 * This function returns the pointer to an entry in BA Stream
521 * table which matches the given RA/TID pair.
522 */
523 struct mwifiex_tx_ba_stream_tbl *
mwifiex_get_ba_tbl(struct mwifiex_private * priv,int tid,u8 * ra)524 mwifiex_get_ba_tbl(struct mwifiex_private *priv, int tid, u8 *ra)
525 {
526 struct mwifiex_tx_ba_stream_tbl *tx_ba_tsr_tbl;
527
528 spin_lock_bh(&priv->tx_ba_stream_tbl_lock);
529 list_for_each_entry(tx_ba_tsr_tbl, &priv->tx_ba_stream_tbl_ptr, list) {
530 if (ether_addr_equal_unaligned(tx_ba_tsr_tbl->ra, ra) &&
531 tx_ba_tsr_tbl->tid == tid) {
532 spin_unlock_bh(&priv->tx_ba_stream_tbl_lock);
533 return tx_ba_tsr_tbl;
534 }
535 }
536 spin_unlock_bh(&priv->tx_ba_stream_tbl_lock);
537 return NULL;
538 }
539
540 /*
541 * This function creates an entry in Tx BA stream table for the
542 * given RA/TID pair.
543 */
mwifiex_create_ba_tbl(struct mwifiex_private * priv,u8 * ra,int tid,enum mwifiex_ba_status ba_status)544 void mwifiex_create_ba_tbl(struct mwifiex_private *priv, u8 *ra, int tid,
545 enum mwifiex_ba_status ba_status)
546 {
547 struct mwifiex_tx_ba_stream_tbl *new_node;
548 struct mwifiex_ra_list_tbl *ra_list;
549 int tid_down;
550
551 if (!mwifiex_get_ba_tbl(priv, tid, ra)) {
552 new_node = kzalloc(sizeof(struct mwifiex_tx_ba_stream_tbl),
553 GFP_ATOMIC);
554 if (!new_node)
555 return;
556
557 tid_down = mwifiex_wmm_downgrade_tid(priv, tid);
558 ra_list = mwifiex_wmm_get_ralist_node(priv, tid_down, ra);
559 if (ra_list) {
560 ra_list->ba_status = ba_status;
561 ra_list->amsdu_in_ampdu = false;
562 }
563 INIT_LIST_HEAD(&new_node->list);
564
565 new_node->tid = tid;
566 new_node->ba_status = ba_status;
567 memcpy(new_node->ra, ra, ETH_ALEN);
568
569 spin_lock_bh(&priv->tx_ba_stream_tbl_lock);
570 list_add_tail(&new_node->list, &priv->tx_ba_stream_tbl_ptr);
571 spin_unlock_bh(&priv->tx_ba_stream_tbl_lock);
572 }
573 }
574
575 /*
576 * This function sends an add BA request to the given TID/RA pair.
577 */
mwifiex_send_addba(struct mwifiex_private * priv,int tid,u8 * peer_mac)578 int mwifiex_send_addba(struct mwifiex_private *priv, int tid, u8 *peer_mac)
579 {
580 struct host_cmd_ds_11n_addba_req add_ba_req;
581 u32 tx_win_size = priv->add_ba_param.tx_win_size;
582 static u8 dialog_tok;
583 int ret;
584 u16 block_ack_param_set;
585
586 mwifiex_dbg(priv->adapter, CMD, "cmd: %s: tid %d\n", __func__, tid);
587
588 memset(&add_ba_req, 0, sizeof(add_ba_req));
589
590 if ((GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA) &&
591 ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info) &&
592 priv->adapter->is_hw_11ac_capable &&
593 memcmp(priv->cfg_bssid, peer_mac, ETH_ALEN)) {
594 struct mwifiex_sta_node *sta_ptr;
595
596 spin_lock_bh(&priv->sta_list_spinlock);
597 sta_ptr = mwifiex_get_sta_entry(priv, peer_mac);
598 if (!sta_ptr) {
599 spin_unlock_bh(&priv->sta_list_spinlock);
600 mwifiex_dbg(priv->adapter, ERROR,
601 "BA setup with unknown TDLS peer %pM!\n",
602 peer_mac);
603 return -1;
604 }
605 if (sta_ptr->is_11ac_enabled)
606 tx_win_size = MWIFIEX_11AC_STA_AMPDU_DEF_TXWINSIZE;
607 spin_unlock_bh(&priv->sta_list_spinlock);
608 }
609
610 block_ack_param_set = (u16)((tid << BLOCKACKPARAM_TID_POS) |
611 tx_win_size << BLOCKACKPARAM_WINSIZE_POS |
612 IMMEDIATE_BLOCK_ACK);
613
614 /* enable AMSDU inside AMPDU */
615 if (priv->add_ba_param.tx_amsdu &&
616 (priv->aggr_prio_tbl[tid].amsdu != BA_STREAM_NOT_ALLOWED))
617 block_ack_param_set |= BLOCKACKPARAM_AMSDU_SUPP_MASK;
618
619 add_ba_req.block_ack_param_set = cpu_to_le16(block_ack_param_set);
620 add_ba_req.block_ack_tmo = cpu_to_le16((u16)priv->add_ba_param.timeout);
621
622 ++dialog_tok;
623
624 if (dialog_tok == 0)
625 dialog_tok = 1;
626
627 add_ba_req.dialog_token = dialog_tok;
628 memcpy(&add_ba_req.peer_mac_addr, peer_mac, ETH_ALEN);
629
630 /* We don't wait for the response of this command */
631 ret = mwifiex_send_cmd(priv, HostCmd_CMD_11N_ADDBA_REQ,
632 0, 0, &add_ba_req, false);
633
634 return ret;
635 }
636
637 /*
638 * This function sends a delete BA request to the given TID/RA pair.
639 */
mwifiex_send_delba(struct mwifiex_private * priv,int tid,u8 * peer_mac,int initiator)640 int mwifiex_send_delba(struct mwifiex_private *priv, int tid, u8 *peer_mac,
641 int initiator)
642 {
643 struct host_cmd_ds_11n_delba delba;
644 int ret;
645 uint16_t del_ba_param_set;
646
647 memset(&delba, 0, sizeof(delba));
648
649 del_ba_param_set = tid << DELBA_TID_POS;
650
651 if (initiator)
652 del_ba_param_set |= IEEE80211_DELBA_PARAM_INITIATOR_MASK;
653 else
654 del_ba_param_set &= ~IEEE80211_DELBA_PARAM_INITIATOR_MASK;
655
656 delba.del_ba_param_set = cpu_to_le16(del_ba_param_set);
657 memcpy(&delba.peer_mac_addr, peer_mac, ETH_ALEN);
658
659 /* We don't wait for the response of this command */
660 ret = mwifiex_send_cmd(priv, HostCmd_CMD_11N_DELBA,
661 HostCmd_ACT_GEN_SET, 0, &delba, false);
662
663 return ret;
664 }
665
666 /*
667 * This function sends delba to specific tid
668 */
mwifiex_11n_delba(struct mwifiex_private * priv,int tid)669 void mwifiex_11n_delba(struct mwifiex_private *priv, int tid)
670 {
671 struct mwifiex_rx_reorder_tbl *rx_reor_tbl_ptr;
672
673 spin_lock_bh(&priv->rx_reorder_tbl_lock);
674 list_for_each_entry(rx_reor_tbl_ptr, &priv->rx_reorder_tbl_ptr, list) {
675 if (rx_reor_tbl_ptr->tid == tid) {
676 dev_dbg(priv->adapter->dev,
677 "Send delba to tid=%d, %pM\n",
678 tid, rx_reor_tbl_ptr->ta);
679 mwifiex_send_delba(priv, tid, rx_reor_tbl_ptr->ta, 0);
680 goto exit;
681 }
682 }
683 exit:
684 spin_unlock_bh(&priv->rx_reorder_tbl_lock);
685 }
686
687 /*
688 * This function handles the command response of a delete BA request.
689 */
mwifiex_11n_delete_ba_stream(struct mwifiex_private * priv,u8 * del_ba)690 void mwifiex_11n_delete_ba_stream(struct mwifiex_private *priv, u8 *del_ba)
691 {
692 struct host_cmd_ds_11n_delba *cmd_del_ba =
693 (struct host_cmd_ds_11n_delba *) del_ba;
694 uint16_t del_ba_param_set = le16_to_cpu(cmd_del_ba->del_ba_param_set);
695 int tid;
696
697 tid = del_ba_param_set >> DELBA_TID_POS;
698
699 mwifiex_del_ba_tbl(priv, tid, cmd_del_ba->peer_mac_addr,
700 TYPE_DELBA_RECEIVE, INITIATOR_BIT(del_ba_param_set));
701 }
702
703 /*
704 * This function retrieves the Rx reordering table.
705 */
mwifiex_get_rx_reorder_tbl(struct mwifiex_private * priv,struct mwifiex_ds_rx_reorder_tbl * buf)706 int mwifiex_get_rx_reorder_tbl(struct mwifiex_private *priv,
707 struct mwifiex_ds_rx_reorder_tbl *buf)
708 {
709 int i;
710 struct mwifiex_ds_rx_reorder_tbl *rx_reo_tbl = buf;
711 struct mwifiex_rx_reorder_tbl *rx_reorder_tbl_ptr;
712 int count = 0;
713
714 spin_lock_bh(&priv->rx_reorder_tbl_lock);
715 list_for_each_entry(rx_reorder_tbl_ptr, &priv->rx_reorder_tbl_ptr,
716 list) {
717 rx_reo_tbl->tid = (u16) rx_reorder_tbl_ptr->tid;
718 memcpy(rx_reo_tbl->ta, rx_reorder_tbl_ptr->ta, ETH_ALEN);
719 rx_reo_tbl->start_win = rx_reorder_tbl_ptr->start_win;
720 rx_reo_tbl->win_size = rx_reorder_tbl_ptr->win_size;
721 for (i = 0; i < rx_reorder_tbl_ptr->win_size; ++i) {
722 if (rx_reorder_tbl_ptr->rx_reorder_ptr[i])
723 rx_reo_tbl->buffer[i] = true;
724 else
725 rx_reo_tbl->buffer[i] = false;
726 }
727 rx_reo_tbl++;
728 count++;
729
730 if (count >= MWIFIEX_MAX_RX_BASTREAM_SUPPORTED)
731 break;
732 }
733 spin_unlock_bh(&priv->rx_reorder_tbl_lock);
734
735 return count;
736 }
737
738 /*
739 * This function retrieves the Tx BA stream table.
740 */
mwifiex_get_tx_ba_stream_tbl(struct mwifiex_private * priv,struct mwifiex_ds_tx_ba_stream_tbl * buf)741 int mwifiex_get_tx_ba_stream_tbl(struct mwifiex_private *priv,
742 struct mwifiex_ds_tx_ba_stream_tbl *buf)
743 {
744 struct mwifiex_tx_ba_stream_tbl *tx_ba_tsr_tbl;
745 struct mwifiex_ds_tx_ba_stream_tbl *rx_reo_tbl = buf;
746 int count = 0;
747
748 spin_lock_bh(&priv->tx_ba_stream_tbl_lock);
749 list_for_each_entry(tx_ba_tsr_tbl, &priv->tx_ba_stream_tbl_ptr, list) {
750 rx_reo_tbl->tid = (u16) tx_ba_tsr_tbl->tid;
751 mwifiex_dbg(priv->adapter, DATA, "data: %s tid=%d\n",
752 __func__, rx_reo_tbl->tid);
753 memcpy(rx_reo_tbl->ra, tx_ba_tsr_tbl->ra, ETH_ALEN);
754 rx_reo_tbl->amsdu = tx_ba_tsr_tbl->amsdu;
755 rx_reo_tbl++;
756 count++;
757 if (count >= MWIFIEX_MAX_TX_BASTREAM_SUPPORTED)
758 break;
759 }
760 spin_unlock_bh(&priv->tx_ba_stream_tbl_lock);
761
762 return count;
763 }
764
765 /*
766 * This function retrieves the entry for specific tx BA stream table by RA and
767 * deletes it.
768 */
mwifiex_del_tx_ba_stream_tbl_by_ra(struct mwifiex_private * priv,u8 * ra)769 void mwifiex_del_tx_ba_stream_tbl_by_ra(struct mwifiex_private *priv, u8 *ra)
770 {
771 struct mwifiex_tx_ba_stream_tbl *tbl, *tmp;
772
773 if (!ra)
774 return;
775
776 spin_lock_bh(&priv->tx_ba_stream_tbl_lock);
777 list_for_each_entry_safe(tbl, tmp, &priv->tx_ba_stream_tbl_ptr, list)
778 if (!memcmp(tbl->ra, ra, ETH_ALEN))
779 mwifiex_11n_delete_tx_ba_stream_tbl_entry(priv, tbl);
780 spin_unlock_bh(&priv->tx_ba_stream_tbl_lock);
781
782 return;
783 }
784
785 /* This function initializes the BlockACK setup information for given
786 * mwifiex_private structure.
787 */
mwifiex_set_ba_params(struct mwifiex_private * priv)788 void mwifiex_set_ba_params(struct mwifiex_private *priv)
789 {
790 priv->add_ba_param.timeout = MWIFIEX_DEFAULT_BLOCK_ACK_TIMEOUT;
791
792 if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_UAP) {
793 priv->add_ba_param.tx_win_size =
794 MWIFIEX_UAP_AMPDU_DEF_TXWINSIZE;
795 priv->add_ba_param.rx_win_size =
796 MWIFIEX_UAP_AMPDU_DEF_RXWINSIZE;
797 } else {
798 priv->add_ba_param.tx_win_size =
799 MWIFIEX_STA_AMPDU_DEF_TXWINSIZE;
800 priv->add_ba_param.rx_win_size =
801 MWIFIEX_STA_AMPDU_DEF_RXWINSIZE;
802 }
803
804 priv->add_ba_param.tx_amsdu = true;
805 priv->add_ba_param.rx_amsdu = true;
806
807 return;
808 }
809
mwifiex_get_sec_chan_offset(int chan)810 u8 mwifiex_get_sec_chan_offset(int chan)
811 {
812 u8 sec_offset;
813
814 switch (chan) {
815 case 36:
816 case 44:
817 case 52:
818 case 60:
819 case 100:
820 case 108:
821 case 116:
822 case 124:
823 case 132:
824 case 140:
825 case 149:
826 case 157:
827 sec_offset = IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
828 break;
829 case 40:
830 case 48:
831 case 56:
832 case 64:
833 case 104:
834 case 112:
835 case 120:
836 case 128:
837 case 136:
838 case 144:
839 case 153:
840 case 161:
841 sec_offset = IEEE80211_HT_PARAM_CHA_SEC_BELOW;
842 break;
843 case 165:
844 default:
845 sec_offset = IEEE80211_HT_PARAM_CHA_SEC_NONE;
846 break;
847 }
848
849 return sec_offset;
850 }
851
852 /* This function will send DELBA to entries in the priv's
853 * Tx BA stream table
854 */
855 static void
mwifiex_send_delba_txbastream_tbl(struct mwifiex_private * priv,u8 tid)856 mwifiex_send_delba_txbastream_tbl(struct mwifiex_private *priv, u8 tid)
857 {
858 struct mwifiex_adapter *adapter = priv->adapter;
859 struct mwifiex_tx_ba_stream_tbl *tx_ba_stream_tbl_ptr;
860
861 list_for_each_entry(tx_ba_stream_tbl_ptr,
862 &priv->tx_ba_stream_tbl_ptr, list) {
863 if (tx_ba_stream_tbl_ptr->ba_status == BA_SETUP_COMPLETE) {
864 if (tid == tx_ba_stream_tbl_ptr->tid) {
865 dev_dbg(adapter->dev,
866 "Tx:Send delba to tid=%d, %pM\n", tid,
867 tx_ba_stream_tbl_ptr->ra);
868 mwifiex_send_delba(priv,
869 tx_ba_stream_tbl_ptr->tid,
870 tx_ba_stream_tbl_ptr->ra, 1);
871 return;
872 }
873 }
874 }
875 }
876
877 /* This function updates all the tx_win_size
878 */
mwifiex_update_ampdu_txwinsize(struct mwifiex_adapter * adapter)879 void mwifiex_update_ampdu_txwinsize(struct mwifiex_adapter *adapter)
880 {
881 u8 i;
882 u32 tx_win_size;
883 struct mwifiex_private *priv;
884
885 for (i = 0; i < adapter->priv_num; i++) {
886 if (!adapter->priv[i])
887 continue;
888 priv = adapter->priv[i];
889 tx_win_size = priv->add_ba_param.tx_win_size;
890
891 if (priv->bss_type == MWIFIEX_BSS_TYPE_STA)
892 priv->add_ba_param.tx_win_size =
893 MWIFIEX_STA_AMPDU_DEF_TXWINSIZE;
894
895 if (priv->bss_type == MWIFIEX_BSS_TYPE_P2P)
896 priv->add_ba_param.tx_win_size =
897 MWIFIEX_STA_AMPDU_DEF_TXWINSIZE;
898
899 if (priv->bss_type == MWIFIEX_BSS_TYPE_UAP)
900 priv->add_ba_param.tx_win_size =
901 MWIFIEX_UAP_AMPDU_DEF_TXWINSIZE;
902
903 if (adapter->coex_win_size) {
904 if (adapter->coex_tx_win_size)
905 priv->add_ba_param.tx_win_size =
906 adapter->coex_tx_win_size;
907 }
908
909 if (tx_win_size != priv->add_ba_param.tx_win_size) {
910 if (!priv->media_connected)
911 continue;
912 for (i = 0; i < MAX_NUM_TID; i++)
913 mwifiex_send_delba_txbastream_tbl(priv, i);
914 }
915 }
916 }
917