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 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 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, tid_down;
160 struct host_cmd_ds_11n_addba_rsp *add_ba_rsp = &resp->params.add_ba_rsp;
161 struct mwifiex_tx_ba_stream_tbl *tx_ba_tbl;
162 struct mwifiex_ra_list_tbl *ra_list;
163 u16 block_ack_param_set = le16_to_cpu(add_ba_rsp->block_ack_param_set);
164
165 add_ba_rsp->ssn = cpu_to_le16((le16_to_cpu(add_ba_rsp->ssn))
166 & SSN_MASK);
167
168 tid = (block_ack_param_set & IEEE80211_ADDBA_PARAM_TID_MASK)
169 >> BLOCKACKPARAM_TID_POS;
170
171 tid_down = mwifiex_wmm_downgrade_tid(priv, tid);
172 ra_list = mwifiex_wmm_get_ralist_node(priv, tid_down, add_ba_rsp->
173 peer_mac_addr);
174 if (le16_to_cpu(add_ba_rsp->status_code) != BA_RESULT_SUCCESS) {
175 if (ra_list) {
176 ra_list->ba_status = BA_SETUP_NONE;
177 ra_list->amsdu_in_ampdu = false;
178 }
179 mwifiex_del_ba_tbl(priv, tid, add_ba_rsp->peer_mac_addr,
180 TYPE_DELBA_SENT, true);
181 if (add_ba_rsp->add_rsp_result != BA_RESULT_TIMEOUT)
182 priv->aggr_prio_tbl[tid].ampdu_ap =
183 BA_STREAM_NOT_ALLOWED;
184 return 0;
185 }
186
187 tx_ba_tbl = mwifiex_get_ba_tbl(priv, tid, add_ba_rsp->peer_mac_addr);
188 if (tx_ba_tbl) {
189 mwifiex_dbg(priv->adapter, EVENT, "info: BA stream complete\n");
190 tx_ba_tbl->ba_status = BA_SETUP_COMPLETE;
191 if ((block_ack_param_set & BLOCKACKPARAM_AMSDU_SUPP_MASK) &&
192 priv->add_ba_param.tx_amsdu &&
193 (priv->aggr_prio_tbl[tid].amsdu != BA_STREAM_NOT_ALLOWED))
194 tx_ba_tbl->amsdu = true;
195 else
196 tx_ba_tbl->amsdu = false;
197 if (ra_list) {
198 ra_list->amsdu_in_ampdu = tx_ba_tbl->amsdu;
199 ra_list->ba_status = BA_SETUP_COMPLETE;
200 }
201 } else {
202 mwifiex_dbg(priv->adapter, ERROR, "BA stream not created\n");
203 }
204
205 return 0;
206 }
207
208 /*
209 * This function prepares command of reconfigure Tx buffer.
210 *
211 * Preparation includes -
212 * - Setting command ID, action and proper size
213 * - Setting Tx buffer size (for SET only)
214 * - Ensuring correct endian-ness
215 */
mwifiex_cmd_recfg_tx_buf(struct mwifiex_private * priv,struct host_cmd_ds_command * cmd,int cmd_action,u16 * buf_size)216 int mwifiex_cmd_recfg_tx_buf(struct mwifiex_private *priv,
217 struct host_cmd_ds_command *cmd, int cmd_action,
218 u16 *buf_size)
219 {
220 struct host_cmd_ds_txbuf_cfg *tx_buf = &cmd->params.tx_buf;
221 u16 action = (u16) cmd_action;
222
223 cmd->command = cpu_to_le16(HostCmd_CMD_RECONFIGURE_TX_BUFF);
224 cmd->size =
225 cpu_to_le16(sizeof(struct host_cmd_ds_txbuf_cfg) + S_DS_GEN);
226 tx_buf->action = cpu_to_le16(action);
227 switch (action) {
228 case HostCmd_ACT_GEN_SET:
229 mwifiex_dbg(priv->adapter, CMD,
230 "cmd: set tx_buf=%d\n", *buf_size);
231 tx_buf->buff_size = cpu_to_le16(*buf_size);
232 break;
233 case HostCmd_ACT_GEN_GET:
234 default:
235 tx_buf->buff_size = 0;
236 break;
237 }
238 return 0;
239 }
240
241 /*
242 * This function prepares command of AMSDU aggregation control.
243 *
244 * Preparation includes -
245 * - Setting command ID, action and proper size
246 * - Setting AMSDU control parameters (for SET only)
247 * - Ensuring correct endian-ness
248 */
mwifiex_cmd_amsdu_aggr_ctrl(struct host_cmd_ds_command * cmd,int cmd_action,struct mwifiex_ds_11n_amsdu_aggr_ctrl * aa_ctrl)249 int mwifiex_cmd_amsdu_aggr_ctrl(struct host_cmd_ds_command *cmd,
250 int cmd_action,
251 struct mwifiex_ds_11n_amsdu_aggr_ctrl *aa_ctrl)
252 {
253 struct host_cmd_ds_amsdu_aggr_ctrl *amsdu_ctrl =
254 &cmd->params.amsdu_aggr_ctrl;
255 u16 action = (u16) cmd_action;
256
257 cmd->command = cpu_to_le16(HostCmd_CMD_AMSDU_AGGR_CTRL);
258 cmd->size = cpu_to_le16(sizeof(struct host_cmd_ds_amsdu_aggr_ctrl)
259 + S_DS_GEN);
260 amsdu_ctrl->action = cpu_to_le16(action);
261 switch (action) {
262 case HostCmd_ACT_GEN_SET:
263 amsdu_ctrl->enable = cpu_to_le16(aa_ctrl->enable);
264 amsdu_ctrl->curr_buf_size = 0;
265 break;
266 case HostCmd_ACT_GEN_GET:
267 default:
268 amsdu_ctrl->curr_buf_size = 0;
269 break;
270 }
271 return 0;
272 }
273
274 /*
275 * This function prepares 11n configuration command.
276 *
277 * Preparation includes -
278 * - Setting command ID, action and proper size
279 * - Setting HT Tx capability and HT Tx information fields
280 * - Ensuring correct endian-ness
281 */
mwifiex_cmd_11n_cfg(struct mwifiex_private * priv,struct host_cmd_ds_command * cmd,u16 cmd_action,struct mwifiex_ds_11n_tx_cfg * txcfg)282 int mwifiex_cmd_11n_cfg(struct mwifiex_private *priv,
283 struct host_cmd_ds_command *cmd, u16 cmd_action,
284 struct mwifiex_ds_11n_tx_cfg *txcfg)
285 {
286 struct host_cmd_ds_11n_cfg *htcfg = &cmd->params.htcfg;
287
288 cmd->command = cpu_to_le16(HostCmd_CMD_11N_CFG);
289 cmd->size = cpu_to_le16(sizeof(struct host_cmd_ds_11n_cfg) + S_DS_GEN);
290 htcfg->action = cpu_to_le16(cmd_action);
291 htcfg->ht_tx_cap = cpu_to_le16(txcfg->tx_htcap);
292 htcfg->ht_tx_info = cpu_to_le16(txcfg->tx_htinfo);
293
294 if (priv->adapter->is_hw_11ac_capable)
295 htcfg->misc_config = cpu_to_le16(txcfg->misc_config);
296
297 return 0;
298 }
299
300 /*
301 * This function appends an 11n TLV to a buffer.
302 *
303 * Buffer allocation is responsibility of the calling
304 * function. No size validation is made here.
305 *
306 * The function fills up the following sections, if applicable -
307 * - HT capability IE
308 * - HT information IE (with channel list)
309 * - 20/40 BSS Coexistence IE
310 * - HT Extended Capabilities IE
311 */
312 int
mwifiex_cmd_append_11n_tlv(struct mwifiex_private * priv,struct mwifiex_bssdescriptor * bss_desc,u8 ** buffer)313 mwifiex_cmd_append_11n_tlv(struct mwifiex_private *priv,
314 struct mwifiex_bssdescriptor *bss_desc,
315 u8 **buffer)
316 {
317 struct mwifiex_ie_types_htcap *ht_cap;
318 struct mwifiex_ie_types_htinfo *ht_info;
319 struct mwifiex_ie_types_chan_list_param_set *chan_list;
320 struct mwifiex_ie_types_2040bssco *bss_co_2040;
321 struct mwifiex_ie_types_extcap *ext_cap;
322 int ret_len = 0;
323 struct ieee80211_supported_band *sband;
324 struct ieee_types_header *hdr;
325 u8 radio_type;
326
327 if (!buffer || !*buffer)
328 return ret_len;
329
330 radio_type = mwifiex_band_to_radio_type((u8) bss_desc->bss_band);
331 sband = priv->wdev.wiphy->bands[radio_type];
332
333 if (bss_desc->bcn_ht_cap) {
334 ht_cap = (struct mwifiex_ie_types_htcap *) *buffer;
335 memset(ht_cap, 0, sizeof(struct mwifiex_ie_types_htcap));
336 ht_cap->header.type = cpu_to_le16(WLAN_EID_HT_CAPABILITY);
337 ht_cap->header.len =
338 cpu_to_le16(sizeof(struct ieee80211_ht_cap));
339 memcpy((u8 *) ht_cap + sizeof(struct mwifiex_ie_types_header),
340 (u8 *)bss_desc->bcn_ht_cap,
341 le16_to_cpu(ht_cap->header.len));
342
343 mwifiex_fill_cap_info(priv, radio_type, &ht_cap->ht_cap);
344 /* Update HT40 capability from current channel information */
345 if (bss_desc->bcn_ht_oper) {
346 u8 ht_param = bss_desc->bcn_ht_oper->ht_param;
347 u8 radio =
348 mwifiex_band_to_radio_type(bss_desc->bss_band);
349 int freq =
350 ieee80211_channel_to_frequency(bss_desc->channel,
351 radio);
352 struct ieee80211_channel *chan =
353 ieee80211_get_channel(priv->adapter->wiphy, freq);
354
355 switch (ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) {
356 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
357 if (chan->flags & IEEE80211_CHAN_NO_HT40PLUS) {
358 ht_cap->ht_cap.cap_info &=
359 cpu_to_le16
360 (~IEEE80211_HT_CAP_SUP_WIDTH_20_40);
361 ht_cap->ht_cap.cap_info &=
362 cpu_to_le16(~IEEE80211_HT_CAP_SGI_40);
363 }
364 break;
365 case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
366 if (chan->flags & IEEE80211_CHAN_NO_HT40MINUS) {
367 ht_cap->ht_cap.cap_info &=
368 cpu_to_le16
369 (~IEEE80211_HT_CAP_SUP_WIDTH_20_40);
370 ht_cap->ht_cap.cap_info &=
371 cpu_to_le16(~IEEE80211_HT_CAP_SGI_40);
372 }
373 break;
374 }
375 }
376
377 *buffer += sizeof(struct mwifiex_ie_types_htcap);
378 ret_len += sizeof(struct mwifiex_ie_types_htcap);
379 }
380
381 if (bss_desc->bcn_ht_oper) {
382 if (priv->bss_mode == NL80211_IFTYPE_ADHOC) {
383 ht_info = (struct mwifiex_ie_types_htinfo *) *buffer;
384 memset(ht_info, 0,
385 sizeof(struct mwifiex_ie_types_htinfo));
386 ht_info->header.type =
387 cpu_to_le16(WLAN_EID_HT_OPERATION);
388 ht_info->header.len =
389 cpu_to_le16(
390 sizeof(struct ieee80211_ht_operation));
391
392 memcpy((u8 *) ht_info +
393 sizeof(struct mwifiex_ie_types_header),
394 (u8 *)bss_desc->bcn_ht_oper,
395 le16_to_cpu(ht_info->header.len));
396
397 if (!(sband->ht_cap.cap &
398 IEEE80211_HT_CAP_SUP_WIDTH_20_40))
399 ht_info->ht_oper.ht_param &=
400 ~(IEEE80211_HT_PARAM_CHAN_WIDTH_ANY |
401 IEEE80211_HT_PARAM_CHA_SEC_OFFSET);
402
403 *buffer += sizeof(struct mwifiex_ie_types_htinfo);
404 ret_len += sizeof(struct mwifiex_ie_types_htinfo);
405 }
406
407 chan_list =
408 (struct mwifiex_ie_types_chan_list_param_set *) *buffer;
409 memset(chan_list, 0,
410 sizeof(struct mwifiex_ie_types_chan_list_param_set));
411 chan_list->header.type = cpu_to_le16(TLV_TYPE_CHANLIST);
412 chan_list->header.len = cpu_to_le16(
413 sizeof(struct mwifiex_ie_types_chan_list_param_set) -
414 sizeof(struct mwifiex_ie_types_header));
415 chan_list->chan_scan_param[0].chan_number =
416 bss_desc->bcn_ht_oper->primary_chan;
417 chan_list->chan_scan_param[0].radio_type =
418 mwifiex_band_to_radio_type((u8) bss_desc->bss_band);
419
420 if (sband->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 &&
421 bss_desc->bcn_ht_oper->ht_param &
422 IEEE80211_HT_PARAM_CHAN_WIDTH_ANY)
423 SET_SECONDARYCHAN(chan_list->chan_scan_param[0].
424 radio_type,
425 (bss_desc->bcn_ht_oper->ht_param &
426 IEEE80211_HT_PARAM_CHA_SEC_OFFSET));
427
428 *buffer += sizeof(struct mwifiex_ie_types_chan_list_param_set);
429 ret_len += sizeof(struct mwifiex_ie_types_chan_list_param_set);
430 }
431
432 if (bss_desc->bcn_bss_co_2040) {
433 bss_co_2040 = (struct mwifiex_ie_types_2040bssco *) *buffer;
434 memset(bss_co_2040, 0,
435 sizeof(struct mwifiex_ie_types_2040bssco));
436 bss_co_2040->header.type = cpu_to_le16(WLAN_EID_BSS_COEX_2040);
437 bss_co_2040->header.len =
438 cpu_to_le16(sizeof(bss_co_2040->bss_co_2040));
439
440 memcpy((u8 *) bss_co_2040 +
441 sizeof(struct mwifiex_ie_types_header),
442 bss_desc->bcn_bss_co_2040 +
443 sizeof(struct ieee_types_header),
444 le16_to_cpu(bss_co_2040->header.len));
445
446 *buffer += sizeof(struct mwifiex_ie_types_2040bssco);
447 ret_len += sizeof(struct mwifiex_ie_types_2040bssco);
448 }
449
450 if (bss_desc->bcn_ext_cap) {
451 hdr = (void *)bss_desc->bcn_ext_cap;
452 ext_cap = (struct mwifiex_ie_types_extcap *) *buffer;
453 memset(ext_cap, 0, sizeof(struct mwifiex_ie_types_extcap));
454 ext_cap->header.type = cpu_to_le16(WLAN_EID_EXT_CAPABILITY);
455 ext_cap->header.len = cpu_to_le16(hdr->len);
456
457 memcpy((u8 *)ext_cap->ext_capab,
458 bss_desc->bcn_ext_cap + sizeof(struct ieee_types_header),
459 le16_to_cpu(ext_cap->header.len));
460
461 if (hdr->len > 3 &&
462 ext_cap->ext_capab[3] & WLAN_EXT_CAPA4_INTERWORKING_ENABLED)
463 priv->hs2_enabled = true;
464 else
465 priv->hs2_enabled = false;
466
467 *buffer += sizeof(struct mwifiex_ie_types_extcap) + hdr->len;
468 ret_len += sizeof(struct mwifiex_ie_types_extcap) + hdr->len;
469 }
470
471 return ret_len;
472 }
473
474 /*
475 * This function checks if the given pointer is valid entry of
476 * Tx BA Stream table.
477 */
mwifiex_is_tx_ba_stream_ptr_valid(struct mwifiex_private * priv,struct mwifiex_tx_ba_stream_tbl * tx_tbl_ptr)478 static int mwifiex_is_tx_ba_stream_ptr_valid(struct mwifiex_private *priv,
479 struct mwifiex_tx_ba_stream_tbl *tx_tbl_ptr)
480 {
481 struct mwifiex_tx_ba_stream_tbl *tx_ba_tsr_tbl;
482
483 list_for_each_entry(tx_ba_tsr_tbl, &priv->tx_ba_stream_tbl_ptr, list) {
484 if (tx_ba_tsr_tbl == tx_tbl_ptr)
485 return true;
486 }
487
488 return false;
489 }
490
491 /*
492 * This function deletes the given entry in Tx BA Stream table.
493 *
494 * The function also performs a validity check on the supplied
495 * pointer before trying to delete.
496 */
mwifiex_11n_delete_tx_ba_stream_tbl_entry(struct mwifiex_private * priv,struct mwifiex_tx_ba_stream_tbl * tx_ba_tsr_tbl)497 void mwifiex_11n_delete_tx_ba_stream_tbl_entry(struct mwifiex_private *priv,
498 struct mwifiex_tx_ba_stream_tbl *tx_ba_tsr_tbl)
499 {
500 if (!tx_ba_tsr_tbl &&
501 mwifiex_is_tx_ba_stream_ptr_valid(priv, tx_ba_tsr_tbl))
502 return;
503
504 mwifiex_dbg(priv->adapter, INFO,
505 "info: tx_ba_tsr_tbl %p\n", tx_ba_tsr_tbl);
506
507 list_del(&tx_ba_tsr_tbl->list);
508
509 kfree(tx_ba_tsr_tbl);
510 }
511
512 /*
513 * This function deletes all the entries in Tx BA Stream table.
514 */
mwifiex_11n_delete_all_tx_ba_stream_tbl(struct mwifiex_private * priv)515 void mwifiex_11n_delete_all_tx_ba_stream_tbl(struct mwifiex_private *priv)
516 {
517 int i;
518 struct mwifiex_tx_ba_stream_tbl *del_tbl_ptr, *tmp_node;
519 unsigned long flags;
520
521 spin_lock_irqsave(&priv->tx_ba_stream_tbl_lock, flags);
522 list_for_each_entry_safe(del_tbl_ptr, tmp_node,
523 &priv->tx_ba_stream_tbl_ptr, list)
524 mwifiex_11n_delete_tx_ba_stream_tbl_entry(priv, del_tbl_ptr);
525 spin_unlock_irqrestore(&priv->tx_ba_stream_tbl_lock, flags);
526
527 INIT_LIST_HEAD(&priv->tx_ba_stream_tbl_ptr);
528
529 for (i = 0; i < MAX_NUM_TID; ++i)
530 priv->aggr_prio_tbl[i].ampdu_ap =
531 priv->aggr_prio_tbl[i].ampdu_user;
532 }
533
534 /*
535 * This function returns the pointer to an entry in BA Stream
536 * table which matches the given RA/TID pair.
537 */
538 struct mwifiex_tx_ba_stream_tbl *
mwifiex_get_ba_tbl(struct mwifiex_private * priv,int tid,u8 * ra)539 mwifiex_get_ba_tbl(struct mwifiex_private *priv, int tid, u8 *ra)
540 {
541 struct mwifiex_tx_ba_stream_tbl *tx_ba_tsr_tbl;
542 unsigned long flags;
543
544 spin_lock_irqsave(&priv->tx_ba_stream_tbl_lock, flags);
545 list_for_each_entry(tx_ba_tsr_tbl, &priv->tx_ba_stream_tbl_ptr, list) {
546 if (ether_addr_equal_unaligned(tx_ba_tsr_tbl->ra, ra) &&
547 tx_ba_tsr_tbl->tid == tid) {
548 spin_unlock_irqrestore(&priv->tx_ba_stream_tbl_lock,
549 flags);
550 return tx_ba_tsr_tbl;
551 }
552 }
553 spin_unlock_irqrestore(&priv->tx_ba_stream_tbl_lock, flags);
554 return NULL;
555 }
556
557 /*
558 * This function creates an entry in Tx BA stream table for the
559 * given RA/TID pair.
560 */
mwifiex_create_ba_tbl(struct mwifiex_private * priv,u8 * ra,int tid,enum mwifiex_ba_status ba_status)561 void mwifiex_create_ba_tbl(struct mwifiex_private *priv, u8 *ra, int tid,
562 enum mwifiex_ba_status ba_status)
563 {
564 struct mwifiex_tx_ba_stream_tbl *new_node;
565 struct mwifiex_ra_list_tbl *ra_list;
566 unsigned long flags;
567 int tid_down;
568
569 if (!mwifiex_get_ba_tbl(priv, tid, ra)) {
570 new_node = kzalloc(sizeof(struct mwifiex_tx_ba_stream_tbl),
571 GFP_ATOMIC);
572 if (!new_node)
573 return;
574
575 tid_down = mwifiex_wmm_downgrade_tid(priv, tid);
576 ra_list = mwifiex_wmm_get_ralist_node(priv, tid_down, ra);
577 if (ra_list) {
578 ra_list->ba_status = ba_status;
579 ra_list->amsdu_in_ampdu = false;
580 }
581 INIT_LIST_HEAD(&new_node->list);
582
583 new_node->tid = tid;
584 new_node->ba_status = ba_status;
585 memcpy(new_node->ra, ra, ETH_ALEN);
586
587 spin_lock_irqsave(&priv->tx_ba_stream_tbl_lock, flags);
588 list_add_tail(&new_node->list, &priv->tx_ba_stream_tbl_ptr);
589 spin_unlock_irqrestore(&priv->tx_ba_stream_tbl_lock, flags);
590 }
591 }
592
593 /*
594 * This function sends an add BA request to the given TID/RA pair.
595 */
mwifiex_send_addba(struct mwifiex_private * priv,int tid,u8 * peer_mac)596 int mwifiex_send_addba(struct mwifiex_private *priv, int tid, u8 *peer_mac)
597 {
598 struct host_cmd_ds_11n_addba_req add_ba_req;
599 u32 tx_win_size = priv->add_ba_param.tx_win_size;
600 static u8 dialog_tok;
601 int ret;
602 unsigned long flags;
603 u16 block_ack_param_set;
604
605 mwifiex_dbg(priv->adapter, CMD, "cmd: %s: tid %d\n", __func__, tid);
606
607 memset(&add_ba_req, 0, sizeof(add_ba_req));
608
609 if ((GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA) &&
610 ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info) &&
611 priv->adapter->is_hw_11ac_capable &&
612 memcmp(priv->cfg_bssid, peer_mac, ETH_ALEN)) {
613 struct mwifiex_sta_node *sta_ptr;
614
615 spin_lock_irqsave(&priv->sta_list_spinlock, flags);
616 sta_ptr = mwifiex_get_sta_entry(priv, peer_mac);
617 if (!sta_ptr) {
618 spin_unlock_irqrestore(&priv->sta_list_spinlock, flags);
619 mwifiex_dbg(priv->adapter, ERROR,
620 "BA setup with unknown TDLS peer %pM!\n",
621 peer_mac);
622 return -1;
623 }
624 if (sta_ptr->is_11ac_enabled)
625 tx_win_size = MWIFIEX_11AC_STA_AMPDU_DEF_TXWINSIZE;
626 spin_unlock_irqrestore(&priv->sta_list_spinlock, flags);
627 }
628
629 block_ack_param_set = (u16)((tid << BLOCKACKPARAM_TID_POS) |
630 tx_win_size << BLOCKACKPARAM_WINSIZE_POS |
631 IMMEDIATE_BLOCK_ACK);
632
633 /* enable AMSDU inside AMPDU */
634 if (priv->add_ba_param.tx_amsdu &&
635 (priv->aggr_prio_tbl[tid].amsdu != BA_STREAM_NOT_ALLOWED))
636 block_ack_param_set |= BLOCKACKPARAM_AMSDU_SUPP_MASK;
637
638 add_ba_req.block_ack_param_set = cpu_to_le16(block_ack_param_set);
639 add_ba_req.block_ack_tmo = cpu_to_le16((u16)priv->add_ba_param.timeout);
640
641 ++dialog_tok;
642
643 if (dialog_tok == 0)
644 dialog_tok = 1;
645
646 add_ba_req.dialog_token = dialog_tok;
647 memcpy(&add_ba_req.peer_mac_addr, peer_mac, ETH_ALEN);
648
649 /* We don't wait for the response of this command */
650 ret = mwifiex_send_cmd(priv, HostCmd_CMD_11N_ADDBA_REQ,
651 0, 0, &add_ba_req, false);
652
653 return ret;
654 }
655
656 /*
657 * This function sends a delete BA request to the given TID/RA pair.
658 */
mwifiex_send_delba(struct mwifiex_private * priv,int tid,u8 * peer_mac,int initiator)659 int mwifiex_send_delba(struct mwifiex_private *priv, int tid, u8 *peer_mac,
660 int initiator)
661 {
662 struct host_cmd_ds_11n_delba delba;
663 int ret;
664 uint16_t del_ba_param_set;
665
666 memset(&delba, 0, sizeof(delba));
667 delba.del_ba_param_set = cpu_to_le16(tid << DELBA_TID_POS);
668
669 del_ba_param_set = le16_to_cpu(delba.del_ba_param_set);
670 if (initiator)
671 del_ba_param_set |= IEEE80211_DELBA_PARAM_INITIATOR_MASK;
672 else
673 del_ba_param_set &= ~IEEE80211_DELBA_PARAM_INITIATOR_MASK;
674
675 memcpy(&delba.peer_mac_addr, peer_mac, ETH_ALEN);
676
677 /* We don't wait for the response of this command */
678 ret = mwifiex_send_cmd(priv, HostCmd_CMD_11N_DELBA,
679 HostCmd_ACT_GEN_SET, 0, &delba, false);
680
681 return ret;
682 }
683
684 /*
685 * This function sends delba to specific tid
686 */
mwifiex_11n_delba(struct mwifiex_private * priv,int tid)687 void mwifiex_11n_delba(struct mwifiex_private *priv, int tid)
688 {
689 struct mwifiex_rx_reorder_tbl *rx_reor_tbl_ptr;
690 unsigned long flags;
691
692 spin_lock_irqsave(&priv->rx_reorder_tbl_lock, flags);
693 list_for_each_entry(rx_reor_tbl_ptr, &priv->rx_reorder_tbl_ptr, list) {
694 if (rx_reor_tbl_ptr->tid == tid) {
695 dev_dbg(priv->adapter->dev,
696 "Send delba to tid=%d, %pM\n",
697 tid, rx_reor_tbl_ptr->ta);
698 mwifiex_send_delba(priv, tid, rx_reor_tbl_ptr->ta, 0);
699 spin_unlock_irqrestore(&priv->rx_reorder_tbl_lock,
700 flags);
701 return;
702 }
703 }
704 spin_unlock_irqrestore(&priv->rx_reorder_tbl_lock, flags);
705 }
706
707 /*
708 * This function handles the command response of a delete BA request.
709 */
mwifiex_11n_delete_ba_stream(struct mwifiex_private * priv,u8 * del_ba)710 void mwifiex_11n_delete_ba_stream(struct mwifiex_private *priv, u8 *del_ba)
711 {
712 struct host_cmd_ds_11n_delba *cmd_del_ba =
713 (struct host_cmd_ds_11n_delba *) del_ba;
714 uint16_t del_ba_param_set = le16_to_cpu(cmd_del_ba->del_ba_param_set);
715 int tid;
716
717 tid = del_ba_param_set >> DELBA_TID_POS;
718
719 mwifiex_del_ba_tbl(priv, tid, cmd_del_ba->peer_mac_addr,
720 TYPE_DELBA_RECEIVE, INITIATOR_BIT(del_ba_param_set));
721 }
722
723 /*
724 * This function retrieves the Rx reordering table.
725 */
mwifiex_get_rx_reorder_tbl(struct mwifiex_private * priv,struct mwifiex_ds_rx_reorder_tbl * buf)726 int mwifiex_get_rx_reorder_tbl(struct mwifiex_private *priv,
727 struct mwifiex_ds_rx_reorder_tbl *buf)
728 {
729 int i;
730 struct mwifiex_ds_rx_reorder_tbl *rx_reo_tbl = buf;
731 struct mwifiex_rx_reorder_tbl *rx_reorder_tbl_ptr;
732 int count = 0;
733 unsigned long flags;
734
735 spin_lock_irqsave(&priv->rx_reorder_tbl_lock, flags);
736 list_for_each_entry(rx_reorder_tbl_ptr, &priv->rx_reorder_tbl_ptr,
737 list) {
738 rx_reo_tbl->tid = (u16) rx_reorder_tbl_ptr->tid;
739 memcpy(rx_reo_tbl->ta, rx_reorder_tbl_ptr->ta, ETH_ALEN);
740 rx_reo_tbl->start_win = rx_reorder_tbl_ptr->start_win;
741 rx_reo_tbl->win_size = rx_reorder_tbl_ptr->win_size;
742 for (i = 0; i < rx_reorder_tbl_ptr->win_size; ++i) {
743 if (rx_reorder_tbl_ptr->rx_reorder_ptr[i])
744 rx_reo_tbl->buffer[i] = true;
745 else
746 rx_reo_tbl->buffer[i] = false;
747 }
748 rx_reo_tbl++;
749 count++;
750
751 if (count >= MWIFIEX_MAX_RX_BASTREAM_SUPPORTED)
752 break;
753 }
754 spin_unlock_irqrestore(&priv->rx_reorder_tbl_lock, flags);
755
756 return count;
757 }
758
759 /*
760 * This function retrieves the Tx BA stream table.
761 */
mwifiex_get_tx_ba_stream_tbl(struct mwifiex_private * priv,struct mwifiex_ds_tx_ba_stream_tbl * buf)762 int mwifiex_get_tx_ba_stream_tbl(struct mwifiex_private *priv,
763 struct mwifiex_ds_tx_ba_stream_tbl *buf)
764 {
765 struct mwifiex_tx_ba_stream_tbl *tx_ba_tsr_tbl;
766 struct mwifiex_ds_tx_ba_stream_tbl *rx_reo_tbl = buf;
767 int count = 0;
768 unsigned long flags;
769
770 spin_lock_irqsave(&priv->tx_ba_stream_tbl_lock, flags);
771 list_for_each_entry(tx_ba_tsr_tbl, &priv->tx_ba_stream_tbl_ptr, list) {
772 rx_reo_tbl->tid = (u16) tx_ba_tsr_tbl->tid;
773 mwifiex_dbg(priv->adapter, DATA, "data: %s tid=%d\n",
774 __func__, rx_reo_tbl->tid);
775 memcpy(rx_reo_tbl->ra, tx_ba_tsr_tbl->ra, ETH_ALEN);
776 rx_reo_tbl->amsdu = tx_ba_tsr_tbl->amsdu;
777 rx_reo_tbl++;
778 count++;
779 if (count >= MWIFIEX_MAX_TX_BASTREAM_SUPPORTED)
780 break;
781 }
782 spin_unlock_irqrestore(&priv->tx_ba_stream_tbl_lock, flags);
783
784 return count;
785 }
786
787 /*
788 * This function retrieves the entry for specific tx BA stream table by RA and
789 * deletes it.
790 */
mwifiex_del_tx_ba_stream_tbl_by_ra(struct mwifiex_private * priv,u8 * ra)791 void mwifiex_del_tx_ba_stream_tbl_by_ra(struct mwifiex_private *priv, u8 *ra)
792 {
793 struct mwifiex_tx_ba_stream_tbl *tbl, *tmp;
794 unsigned long flags;
795
796 if (!ra)
797 return;
798
799 spin_lock_irqsave(&priv->tx_ba_stream_tbl_lock, flags);
800 list_for_each_entry_safe(tbl, tmp, &priv->tx_ba_stream_tbl_ptr, list)
801 if (!memcmp(tbl->ra, ra, ETH_ALEN))
802 mwifiex_11n_delete_tx_ba_stream_tbl_entry(priv, tbl);
803 spin_unlock_irqrestore(&priv->tx_ba_stream_tbl_lock, flags);
804
805 return;
806 }
807
808 /* This function initializes the BlockACK setup information for given
809 * mwifiex_private structure.
810 */
mwifiex_set_ba_params(struct mwifiex_private * priv)811 void mwifiex_set_ba_params(struct mwifiex_private *priv)
812 {
813 priv->add_ba_param.timeout = MWIFIEX_DEFAULT_BLOCK_ACK_TIMEOUT;
814
815 if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_UAP) {
816 priv->add_ba_param.tx_win_size =
817 MWIFIEX_UAP_AMPDU_DEF_TXWINSIZE;
818 priv->add_ba_param.rx_win_size =
819 MWIFIEX_UAP_AMPDU_DEF_RXWINSIZE;
820 } else {
821 priv->add_ba_param.tx_win_size =
822 MWIFIEX_STA_AMPDU_DEF_TXWINSIZE;
823 priv->add_ba_param.rx_win_size =
824 MWIFIEX_STA_AMPDU_DEF_RXWINSIZE;
825 }
826
827 priv->add_ba_param.tx_amsdu = true;
828 priv->add_ba_param.rx_amsdu = true;
829
830 return;
831 }
832
mwifiex_get_sec_chan_offset(int chan)833 u8 mwifiex_get_sec_chan_offset(int chan)
834 {
835 u8 sec_offset;
836
837 switch (chan) {
838 case 36:
839 case 44:
840 case 52:
841 case 60:
842 case 100:
843 case 108:
844 case 116:
845 case 124:
846 case 132:
847 case 140:
848 case 149:
849 case 157:
850 sec_offset = IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
851 break;
852 case 40:
853 case 48:
854 case 56:
855 case 64:
856 case 104:
857 case 112:
858 case 120:
859 case 128:
860 case 136:
861 case 144:
862 case 153:
863 case 161:
864 sec_offset = IEEE80211_HT_PARAM_CHA_SEC_BELOW;
865 break;
866 case 165:
867 default:
868 sec_offset = IEEE80211_HT_PARAM_CHA_SEC_NONE;
869 break;
870 }
871
872 return sec_offset;
873 }
874
875 /* This function will send DELBA to entries in the priv's
876 * Tx BA stream table
877 */
878 static void
mwifiex_send_delba_txbastream_tbl(struct mwifiex_private * priv,u8 tid)879 mwifiex_send_delba_txbastream_tbl(struct mwifiex_private *priv, u8 tid)
880 {
881 struct mwifiex_adapter *adapter = priv->adapter;
882 struct mwifiex_tx_ba_stream_tbl *tx_ba_stream_tbl_ptr;
883
884 list_for_each_entry(tx_ba_stream_tbl_ptr,
885 &priv->tx_ba_stream_tbl_ptr, list) {
886 if (tx_ba_stream_tbl_ptr->ba_status == BA_SETUP_COMPLETE) {
887 if (tid == tx_ba_stream_tbl_ptr->tid) {
888 dev_dbg(adapter->dev,
889 "Tx:Send delba to tid=%d, %pM\n", tid,
890 tx_ba_stream_tbl_ptr->ra);
891 mwifiex_send_delba(priv,
892 tx_ba_stream_tbl_ptr->tid,
893 tx_ba_stream_tbl_ptr->ra, 1);
894 return;
895 }
896 }
897 }
898 }
899
900 /* This function updates all the tx_win_size
901 */
mwifiex_update_ampdu_txwinsize(struct mwifiex_adapter * adapter)902 void mwifiex_update_ampdu_txwinsize(struct mwifiex_adapter *adapter)
903 {
904 u8 i;
905 u32 tx_win_size;
906 struct mwifiex_private *priv;
907
908 for (i = 0; i < adapter->priv_num; i++) {
909 if (!adapter->priv[i])
910 continue;
911 priv = adapter->priv[i];
912 tx_win_size = priv->add_ba_param.tx_win_size;
913
914 if (priv->bss_type == MWIFIEX_BSS_TYPE_STA)
915 priv->add_ba_param.tx_win_size =
916 MWIFIEX_STA_AMPDU_DEF_TXWINSIZE;
917
918 if (priv->bss_type == MWIFIEX_BSS_TYPE_P2P)
919 priv->add_ba_param.tx_win_size =
920 MWIFIEX_STA_AMPDU_DEF_TXWINSIZE;
921
922 if (priv->bss_type == MWIFIEX_BSS_TYPE_UAP)
923 priv->add_ba_param.tx_win_size =
924 MWIFIEX_UAP_AMPDU_DEF_TXWINSIZE;
925
926 if (adapter->coex_win_size) {
927 if (adapter->coex_tx_win_size)
928 priv->add_ba_param.tx_win_size =
929 adapter->coex_tx_win_size;
930 }
931
932 if (tx_win_size != priv->add_ba_param.tx_win_size) {
933 if (!priv->media_connected)
934 continue;
935 for (i = 0; i < MAX_NUM_TID; i++)
936 mwifiex_send_delba_txbastream_tbl(priv, i);
937 }
938 }
939 }
940
