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, struct_size(chan_list, chan_scan_param, 1));
396 chan_list->header.type = cpu_to_le16(TLV_TYPE_CHANLIST);
397 chan_list->header.len =
398 cpu_to_le16(sizeof(struct mwifiex_chan_scan_param_set));
399 chan_list->chan_scan_param[0].chan_number =
400 bss_desc->bcn_ht_oper->primary_chan;
401 chan_list->chan_scan_param[0].radio_type =
402 mwifiex_band_to_radio_type((u8) bss_desc->bss_band);
403
404 if (sband->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 &&
405 bss_desc->bcn_ht_oper->ht_param &
406 IEEE80211_HT_PARAM_CHAN_WIDTH_ANY)
407 SET_SECONDARYCHAN(chan_list->chan_scan_param[0].
408 radio_type,
409 (bss_desc->bcn_ht_oper->ht_param &
410 IEEE80211_HT_PARAM_CHA_SEC_OFFSET));
411
412 *buffer += struct_size(chan_list, chan_scan_param, 1);
413 ret_len += struct_size(chan_list, chan_scan_param, 1);
414 }
415
416 if (bss_desc->bcn_bss_co_2040) {
417 bss_co_2040 = (struct mwifiex_ie_types_2040bssco *) *buffer;
418 memset(bss_co_2040, 0,
419 sizeof(struct mwifiex_ie_types_2040bssco));
420 bss_co_2040->header.type = cpu_to_le16(WLAN_EID_BSS_COEX_2040);
421 bss_co_2040->header.len =
422 cpu_to_le16(sizeof(bss_co_2040->bss_co_2040));
423
424 memcpy((u8 *) bss_co_2040 +
425 sizeof(struct mwifiex_ie_types_header),
426 bss_desc->bcn_bss_co_2040 +
427 sizeof(struct ieee_types_header),
428 le16_to_cpu(bss_co_2040->header.len));
429
430 *buffer += sizeof(struct mwifiex_ie_types_2040bssco);
431 ret_len += sizeof(struct mwifiex_ie_types_2040bssco);
432 }
433
434 if (bss_desc->bcn_ext_cap) {
435 hdr = (void *)bss_desc->bcn_ext_cap;
436 ext_cap = (struct mwifiex_ie_types_extcap *) *buffer;
437 memset(ext_cap, 0, sizeof(struct mwifiex_ie_types_extcap));
438 ext_cap->header.type = cpu_to_le16(WLAN_EID_EXT_CAPABILITY);
439 ext_cap->header.len = cpu_to_le16(hdr->len);
440
441 memcpy((u8 *)ext_cap->ext_capab,
442 bss_desc->bcn_ext_cap + sizeof(struct ieee_types_header),
443 le16_to_cpu(ext_cap->header.len));
444
445 if (hdr->len > 3 &&
446 ext_cap->ext_capab[3] & WLAN_EXT_CAPA4_INTERWORKING_ENABLED)
447 priv->hs2_enabled = true;
448 else
449 priv->hs2_enabled = false;
450
451 *buffer += sizeof(struct mwifiex_ie_types_extcap) + hdr->len;
452 ret_len += sizeof(struct mwifiex_ie_types_extcap) + hdr->len;
453 }
454
455 return ret_len;
456 }
457
458 /*
459 * This function checks if the given pointer is valid entry of
460 * Tx BA Stream table.
461 */
mwifiex_is_tx_ba_stream_ptr_valid(struct mwifiex_private * priv,struct mwifiex_tx_ba_stream_tbl * tx_tbl_ptr)462 static int mwifiex_is_tx_ba_stream_ptr_valid(struct mwifiex_private *priv,
463 struct mwifiex_tx_ba_stream_tbl *tx_tbl_ptr)
464 {
465 struct mwifiex_tx_ba_stream_tbl *tx_ba_tsr_tbl;
466
467 list_for_each_entry(tx_ba_tsr_tbl, &priv->tx_ba_stream_tbl_ptr, list) {
468 if (tx_ba_tsr_tbl == tx_tbl_ptr)
469 return true;
470 }
471
472 return false;
473 }
474
475 /*
476 * This function deletes the given entry in Tx BA Stream table.
477 *
478 * The function also performs a validity check on the supplied
479 * pointer before trying to delete.
480 */
mwifiex_11n_delete_tx_ba_stream_tbl_entry(struct mwifiex_private * priv,struct mwifiex_tx_ba_stream_tbl * tx_ba_tsr_tbl)481 void mwifiex_11n_delete_tx_ba_stream_tbl_entry(struct mwifiex_private *priv,
482 struct mwifiex_tx_ba_stream_tbl *tx_ba_tsr_tbl)
483 {
484 if (!tx_ba_tsr_tbl &&
485 mwifiex_is_tx_ba_stream_ptr_valid(priv, tx_ba_tsr_tbl))
486 return;
487
488 mwifiex_dbg(priv->adapter, INFO,
489 "info: tx_ba_tsr_tbl %p\n", tx_ba_tsr_tbl);
490
491 list_del(&tx_ba_tsr_tbl->list);
492
493 kfree(tx_ba_tsr_tbl);
494 }
495
496 /*
497 * This function deletes all the entries in Tx BA Stream table.
498 */
mwifiex_11n_delete_all_tx_ba_stream_tbl(struct mwifiex_private * priv)499 void mwifiex_11n_delete_all_tx_ba_stream_tbl(struct mwifiex_private *priv)
500 {
501 int i;
502 struct mwifiex_tx_ba_stream_tbl *del_tbl_ptr, *tmp_node;
503
504 spin_lock_bh(&priv->tx_ba_stream_tbl_lock);
505 list_for_each_entry_safe(del_tbl_ptr, tmp_node,
506 &priv->tx_ba_stream_tbl_ptr, list)
507 mwifiex_11n_delete_tx_ba_stream_tbl_entry(priv, del_tbl_ptr);
508 spin_unlock_bh(&priv->tx_ba_stream_tbl_lock);
509
510 INIT_LIST_HEAD(&priv->tx_ba_stream_tbl_ptr);
511
512 for (i = 0; i < MAX_NUM_TID; ++i)
513 priv->aggr_prio_tbl[i].ampdu_ap =
514 priv->aggr_prio_tbl[i].ampdu_user;
515 }
516
517 /*
518 * This function returns the pointer to an entry in BA Stream
519 * table which matches the given RA/TID pair.
520 */
521 struct mwifiex_tx_ba_stream_tbl *
mwifiex_get_ba_tbl(struct mwifiex_private * priv,int tid,u8 * ra)522 mwifiex_get_ba_tbl(struct mwifiex_private *priv, int tid, u8 *ra)
523 {
524 struct mwifiex_tx_ba_stream_tbl *tx_ba_tsr_tbl;
525
526 spin_lock_bh(&priv->tx_ba_stream_tbl_lock);
527 list_for_each_entry(tx_ba_tsr_tbl, &priv->tx_ba_stream_tbl_ptr, list) {
528 if (ether_addr_equal_unaligned(tx_ba_tsr_tbl->ra, ra) &&
529 tx_ba_tsr_tbl->tid == tid) {
530 spin_unlock_bh(&priv->tx_ba_stream_tbl_lock);
531 return tx_ba_tsr_tbl;
532 }
533 }
534 spin_unlock_bh(&priv->tx_ba_stream_tbl_lock);
535 return NULL;
536 }
537
538 /*
539 * This function creates an entry in Tx BA stream table for the
540 * given RA/TID pair.
541 */
mwifiex_create_ba_tbl(struct mwifiex_private * priv,u8 * ra,int tid,enum mwifiex_ba_status ba_status)542 void mwifiex_create_ba_tbl(struct mwifiex_private *priv, u8 *ra, int tid,
543 enum mwifiex_ba_status ba_status)
544 {
545 struct mwifiex_tx_ba_stream_tbl *new_node;
546 struct mwifiex_ra_list_tbl *ra_list;
547 int tid_down;
548
549 if (!mwifiex_get_ba_tbl(priv, tid, ra)) {
550 new_node = kzalloc(sizeof(struct mwifiex_tx_ba_stream_tbl),
551 GFP_ATOMIC);
552 if (!new_node)
553 return;
554
555 tid_down = mwifiex_wmm_downgrade_tid(priv, tid);
556 ra_list = mwifiex_wmm_get_ralist_node(priv, tid_down, ra);
557 if (ra_list) {
558 ra_list->ba_status = ba_status;
559 ra_list->amsdu_in_ampdu = false;
560 }
561 INIT_LIST_HEAD(&new_node->list);
562
563 new_node->tid = tid;
564 new_node->ba_status = ba_status;
565 memcpy(new_node->ra, ra, ETH_ALEN);
566
567 spin_lock_bh(&priv->tx_ba_stream_tbl_lock);
568 list_add_tail(&new_node->list, &priv->tx_ba_stream_tbl_ptr);
569 spin_unlock_bh(&priv->tx_ba_stream_tbl_lock);
570 }
571 }
572
573 /*
574 * This function sends an add BA request to the given TID/RA pair.
575 */
mwifiex_send_addba(struct mwifiex_private * priv,int tid,u8 * peer_mac)576 int mwifiex_send_addba(struct mwifiex_private *priv, int tid, u8 *peer_mac)
577 {
578 struct host_cmd_ds_11n_addba_req add_ba_req;
579 u32 tx_win_size = priv->add_ba_param.tx_win_size;
580 static u8 dialog_tok;
581 int ret;
582 u16 block_ack_param_set;
583
584 mwifiex_dbg(priv->adapter, CMD, "cmd: %s: tid %d\n", __func__, tid);
585
586 memset(&add_ba_req, 0, sizeof(add_ba_req));
587
588 if ((GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA) &&
589 ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info) &&
590 priv->adapter->is_hw_11ac_capable &&
591 memcmp(priv->cfg_bssid, peer_mac, ETH_ALEN)) {
592 struct mwifiex_sta_node *sta_ptr;
593
594 spin_lock_bh(&priv->sta_list_spinlock);
595 sta_ptr = mwifiex_get_sta_entry(priv, peer_mac);
596 if (!sta_ptr) {
597 spin_unlock_bh(&priv->sta_list_spinlock);
598 mwifiex_dbg(priv->adapter, ERROR,
599 "BA setup with unknown TDLS peer %pM!\n",
600 peer_mac);
601 return -1;
602 }
603 if (sta_ptr->is_11ac_enabled)
604 tx_win_size = MWIFIEX_11AC_STA_AMPDU_DEF_TXWINSIZE;
605 spin_unlock_bh(&priv->sta_list_spinlock);
606 }
607
608 block_ack_param_set = (u16)((tid << BLOCKACKPARAM_TID_POS) |
609 tx_win_size << BLOCKACKPARAM_WINSIZE_POS |
610 IMMEDIATE_BLOCK_ACK);
611
612 /* enable AMSDU inside AMPDU */
613 if (priv->add_ba_param.tx_amsdu &&
614 (priv->aggr_prio_tbl[tid].amsdu != BA_STREAM_NOT_ALLOWED))
615 block_ack_param_set |= BLOCKACKPARAM_AMSDU_SUPP_MASK;
616
617 add_ba_req.block_ack_param_set = cpu_to_le16(block_ack_param_set);
618 add_ba_req.block_ack_tmo = cpu_to_le16((u16)priv->add_ba_param.timeout);
619
620 ++dialog_tok;
621
622 if (dialog_tok == 0)
623 dialog_tok = 1;
624
625 add_ba_req.dialog_token = dialog_tok;
626 memcpy(&add_ba_req.peer_mac_addr, peer_mac, ETH_ALEN);
627
628 /* We don't wait for the response of this command */
629 ret = mwifiex_send_cmd(priv, HostCmd_CMD_11N_ADDBA_REQ,
630 0, 0, &add_ba_req, false);
631
632 return ret;
633 }
634
635 /*
636 * This function sends a delete BA request to the given TID/RA pair.
637 */
mwifiex_send_delba(struct mwifiex_private * priv,int tid,u8 * peer_mac,int initiator)638 int mwifiex_send_delba(struct mwifiex_private *priv, int tid, u8 *peer_mac,
639 int initiator)
640 {
641 struct host_cmd_ds_11n_delba delba;
642 int ret;
643 uint16_t del_ba_param_set;
644
645 memset(&delba, 0, sizeof(delba));
646
647 del_ba_param_set = tid << DELBA_TID_POS;
648
649 if (initiator)
650 del_ba_param_set |= IEEE80211_DELBA_PARAM_INITIATOR_MASK;
651 else
652 del_ba_param_set &= ~IEEE80211_DELBA_PARAM_INITIATOR_MASK;
653
654 delba.del_ba_param_set = cpu_to_le16(del_ba_param_set);
655 memcpy(&delba.peer_mac_addr, peer_mac, ETH_ALEN);
656
657 /* We don't wait for the response of this command */
658 ret = mwifiex_send_cmd(priv, HostCmd_CMD_11N_DELBA,
659 HostCmd_ACT_GEN_SET, 0, &delba, false);
660
661 return ret;
662 }
663
664 /*
665 * This function sends delba to specific tid
666 */
mwifiex_11n_delba(struct mwifiex_private * priv,int tid)667 void mwifiex_11n_delba(struct mwifiex_private *priv, int tid)
668 {
669 struct mwifiex_rx_reorder_tbl *rx_reor_tbl_ptr;
670
671 spin_lock_bh(&priv->rx_reorder_tbl_lock);
672 list_for_each_entry(rx_reor_tbl_ptr, &priv->rx_reorder_tbl_ptr, list) {
673 if (rx_reor_tbl_ptr->tid == tid) {
674 dev_dbg(priv->adapter->dev,
675 "Send delba to tid=%d, %pM\n",
676 tid, rx_reor_tbl_ptr->ta);
677 mwifiex_send_delba(priv, tid, rx_reor_tbl_ptr->ta, 0);
678 goto exit;
679 }
680 }
681 exit:
682 spin_unlock_bh(&priv->rx_reorder_tbl_lock);
683 }
684
685 /*
686 * This function handles the command response of a delete BA request.
687 */
mwifiex_11n_delete_ba_stream(struct mwifiex_private * priv,u8 * del_ba)688 void mwifiex_11n_delete_ba_stream(struct mwifiex_private *priv, u8 *del_ba)
689 {
690 struct host_cmd_ds_11n_delba *cmd_del_ba =
691 (struct host_cmd_ds_11n_delba *) del_ba;
692 uint16_t del_ba_param_set = le16_to_cpu(cmd_del_ba->del_ba_param_set);
693 int tid;
694
695 tid = del_ba_param_set >> DELBA_TID_POS;
696
697 mwifiex_del_ba_tbl(priv, tid, cmd_del_ba->peer_mac_addr,
698 TYPE_DELBA_RECEIVE, INITIATOR_BIT(del_ba_param_set));
699 }
700
701 /*
702 * This function retrieves the Rx reordering table.
703 */
mwifiex_get_rx_reorder_tbl(struct mwifiex_private * priv,struct mwifiex_ds_rx_reorder_tbl * buf)704 int mwifiex_get_rx_reorder_tbl(struct mwifiex_private *priv,
705 struct mwifiex_ds_rx_reorder_tbl *buf)
706 {
707 int i;
708 struct mwifiex_ds_rx_reorder_tbl *rx_reo_tbl = buf;
709 struct mwifiex_rx_reorder_tbl *rx_reorder_tbl_ptr;
710 int count = 0;
711
712 spin_lock_bh(&priv->rx_reorder_tbl_lock);
713 list_for_each_entry(rx_reorder_tbl_ptr, &priv->rx_reorder_tbl_ptr,
714 list) {
715 rx_reo_tbl->tid = (u16) rx_reorder_tbl_ptr->tid;
716 memcpy(rx_reo_tbl->ta, rx_reorder_tbl_ptr->ta, ETH_ALEN);
717 rx_reo_tbl->start_win = rx_reorder_tbl_ptr->start_win;
718 rx_reo_tbl->win_size = rx_reorder_tbl_ptr->win_size;
719 for (i = 0; i < rx_reorder_tbl_ptr->win_size; ++i) {
720 if (rx_reorder_tbl_ptr->rx_reorder_ptr[i])
721 rx_reo_tbl->buffer[i] = true;
722 else
723 rx_reo_tbl->buffer[i] = false;
724 }
725 rx_reo_tbl++;
726 count++;
727
728 if (count >= MWIFIEX_MAX_RX_BASTREAM_SUPPORTED)
729 break;
730 }
731 spin_unlock_bh(&priv->rx_reorder_tbl_lock);
732
733 return count;
734 }
735
736 /*
737 * This function retrieves the Tx BA stream table.
738 */
mwifiex_get_tx_ba_stream_tbl(struct mwifiex_private * priv,struct mwifiex_ds_tx_ba_stream_tbl * buf)739 int mwifiex_get_tx_ba_stream_tbl(struct mwifiex_private *priv,
740 struct mwifiex_ds_tx_ba_stream_tbl *buf)
741 {
742 struct mwifiex_tx_ba_stream_tbl *tx_ba_tsr_tbl;
743 struct mwifiex_ds_tx_ba_stream_tbl *rx_reo_tbl = buf;
744 int count = 0;
745
746 spin_lock_bh(&priv->tx_ba_stream_tbl_lock);
747 list_for_each_entry(tx_ba_tsr_tbl, &priv->tx_ba_stream_tbl_ptr, list) {
748 rx_reo_tbl->tid = (u16) tx_ba_tsr_tbl->tid;
749 mwifiex_dbg(priv->adapter, DATA, "data: %s tid=%d\n",
750 __func__, rx_reo_tbl->tid);
751 memcpy(rx_reo_tbl->ra, tx_ba_tsr_tbl->ra, ETH_ALEN);
752 rx_reo_tbl->amsdu = tx_ba_tsr_tbl->amsdu;
753 rx_reo_tbl++;
754 count++;
755 if (count >= MWIFIEX_MAX_TX_BASTREAM_SUPPORTED)
756 break;
757 }
758 spin_unlock_bh(&priv->tx_ba_stream_tbl_lock);
759
760 return count;
761 }
762
763 /*
764 * This function retrieves the entry for specific tx BA stream table by RA and
765 * deletes it.
766 */
mwifiex_del_tx_ba_stream_tbl_by_ra(struct mwifiex_private * priv,u8 * ra)767 void mwifiex_del_tx_ba_stream_tbl_by_ra(struct mwifiex_private *priv, u8 *ra)
768 {
769 struct mwifiex_tx_ba_stream_tbl *tbl, *tmp;
770
771 if (!ra)
772 return;
773
774 spin_lock_bh(&priv->tx_ba_stream_tbl_lock);
775 list_for_each_entry_safe(tbl, tmp, &priv->tx_ba_stream_tbl_ptr, list)
776 if (!memcmp(tbl->ra, ra, ETH_ALEN))
777 mwifiex_11n_delete_tx_ba_stream_tbl_entry(priv, tbl);
778 spin_unlock_bh(&priv->tx_ba_stream_tbl_lock);
779
780 return;
781 }
782
783 /* This function initializes the BlockACK setup information for given
784 * mwifiex_private structure.
785 */
mwifiex_set_ba_params(struct mwifiex_private * priv)786 void mwifiex_set_ba_params(struct mwifiex_private *priv)
787 {
788 priv->add_ba_param.timeout = MWIFIEX_DEFAULT_BLOCK_ACK_TIMEOUT;
789
790 if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_UAP) {
791 priv->add_ba_param.tx_win_size =
792 MWIFIEX_UAP_AMPDU_DEF_TXWINSIZE;
793 priv->add_ba_param.rx_win_size =
794 MWIFIEX_UAP_AMPDU_DEF_RXWINSIZE;
795 } else {
796 priv->add_ba_param.tx_win_size =
797 MWIFIEX_STA_AMPDU_DEF_TXWINSIZE;
798 priv->add_ba_param.rx_win_size =
799 MWIFIEX_STA_AMPDU_DEF_RXWINSIZE;
800 }
801
802 priv->add_ba_param.tx_amsdu = true;
803 priv->add_ba_param.rx_amsdu = true;
804
805 return;
806 }
807
mwifiex_get_sec_chan_offset(int chan)808 u8 mwifiex_get_sec_chan_offset(int chan)
809 {
810 u8 sec_offset;
811
812 switch (chan) {
813 case 36:
814 case 44:
815 case 52:
816 case 60:
817 case 100:
818 case 108:
819 case 116:
820 case 124:
821 case 132:
822 case 140:
823 case 149:
824 case 157:
825 sec_offset = IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
826 break;
827 case 40:
828 case 48:
829 case 56:
830 case 64:
831 case 104:
832 case 112:
833 case 120:
834 case 128:
835 case 136:
836 case 144:
837 case 153:
838 case 161:
839 sec_offset = IEEE80211_HT_PARAM_CHA_SEC_BELOW;
840 break;
841 case 165:
842 default:
843 sec_offset = IEEE80211_HT_PARAM_CHA_SEC_NONE;
844 break;
845 }
846
847 return sec_offset;
848 }
849
850 /* This function will send DELBA to entries in the priv's
851 * Tx BA stream table
852 */
853 static void
mwifiex_send_delba_txbastream_tbl(struct mwifiex_private * priv,u8 tid)854 mwifiex_send_delba_txbastream_tbl(struct mwifiex_private *priv, u8 tid)
855 {
856 struct mwifiex_adapter *adapter = priv->adapter;
857 struct mwifiex_tx_ba_stream_tbl *tx_ba_stream_tbl_ptr;
858
859 list_for_each_entry(tx_ba_stream_tbl_ptr,
860 &priv->tx_ba_stream_tbl_ptr, list) {
861 if (tx_ba_stream_tbl_ptr->ba_status == BA_SETUP_COMPLETE) {
862 if (tid == tx_ba_stream_tbl_ptr->tid) {
863 dev_dbg(adapter->dev,
864 "Tx:Send delba to tid=%d, %pM\n", tid,
865 tx_ba_stream_tbl_ptr->ra);
866 mwifiex_send_delba(priv,
867 tx_ba_stream_tbl_ptr->tid,
868 tx_ba_stream_tbl_ptr->ra, 1);
869 return;
870 }
871 }
872 }
873 }
874
875 /* This function updates all the tx_win_size
876 */
mwifiex_update_ampdu_txwinsize(struct mwifiex_adapter * adapter)877 void mwifiex_update_ampdu_txwinsize(struct mwifiex_adapter *adapter)
878 {
879 u8 i, j;
880 u32 tx_win_size;
881 struct mwifiex_private *priv;
882
883 for (i = 0; i < adapter->priv_num; i++) {
884 priv = adapter->priv[i];
885 tx_win_size = priv->add_ba_param.tx_win_size;
886
887 if (priv->bss_type == MWIFIEX_BSS_TYPE_STA)
888 priv->add_ba_param.tx_win_size =
889 MWIFIEX_STA_AMPDU_DEF_TXWINSIZE;
890
891 if (priv->bss_type == MWIFIEX_BSS_TYPE_P2P)
892 priv->add_ba_param.tx_win_size =
893 MWIFIEX_STA_AMPDU_DEF_TXWINSIZE;
894
895 if (priv->bss_type == MWIFIEX_BSS_TYPE_UAP)
896 priv->add_ba_param.tx_win_size =
897 MWIFIEX_UAP_AMPDU_DEF_TXWINSIZE;
898
899 if (adapter->coex_win_size) {
900 if (adapter->coex_tx_win_size)
901 priv->add_ba_param.tx_win_size =
902 adapter->coex_tx_win_size;
903 }
904
905 if (tx_win_size != priv->add_ba_param.tx_win_size) {
906 if (!priv->media_connected)
907 continue;
908 for (j = 0; j < MAX_NUM_TID; j++)
909 mwifiex_send_delba_txbastream_tbl(priv, j);
910 }
911 }
912 }
913