1 /*
2 * Mac80211 STA API for ST-Ericsson CW1200 drivers
3 *
4 * Copyright (c) 2010, ST-Ericsson
5 * Author: Dmitry Tarnyagin <dmitry.tarnyagin@lockless.no>
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
10 */
11
12 #include <linux/vmalloc.h>
13 #include <linux/sched.h>
14 #include <linux/firmware.h>
15 #include <linux/module.h>
16 #include <linux/etherdevice.h>
17
18 #include "cw1200.h"
19 #include "sta.h"
20 #include "fwio.h"
21 #include "bh.h"
22 #include "debug.h"
23
24 #ifndef ERP_INFO_BYTE_OFFSET
25 #define ERP_INFO_BYTE_OFFSET 2
26 #endif
27
28 static void cw1200_do_join(struct cw1200_common *priv);
29 static void cw1200_do_unjoin(struct cw1200_common *priv);
30
31 static int cw1200_upload_beacon(struct cw1200_common *priv);
32 static int cw1200_upload_pspoll(struct cw1200_common *priv);
33 static int cw1200_upload_null(struct cw1200_common *priv);
34 static int cw1200_upload_qosnull(struct cw1200_common *priv);
35 static int cw1200_start_ap(struct cw1200_common *priv);
36 static int cw1200_update_beaconing(struct cw1200_common *priv);
37 static int cw1200_enable_beaconing(struct cw1200_common *priv,
38 bool enable);
39 static void __cw1200_sta_notify(struct ieee80211_hw *dev,
40 struct ieee80211_vif *vif,
41 enum sta_notify_cmd notify_cmd,
42 int link_id);
43 static int __cw1200_flush(struct cw1200_common *priv, bool drop);
44
__cw1200_free_event_queue(struct list_head * list)45 static inline void __cw1200_free_event_queue(struct list_head *list)
46 {
47 struct cw1200_wsm_event *event, *tmp;
48 list_for_each_entry_safe(event, tmp, list, link) {
49 list_del(&event->link);
50 kfree(event);
51 }
52 }
53
54 /* ******************************************************************** */
55 /* STA API */
56
cw1200_start(struct ieee80211_hw * dev)57 int cw1200_start(struct ieee80211_hw *dev)
58 {
59 struct cw1200_common *priv = dev->priv;
60 int ret = 0;
61
62 cw1200_pm_stay_awake(&priv->pm_state, HZ);
63
64 mutex_lock(&priv->conf_mutex);
65
66 /* default EDCA */
67 WSM_EDCA_SET(&priv->edca, 0, 0x0002, 0x0003, 0x0007, 47, 0xc8, false);
68 WSM_EDCA_SET(&priv->edca, 1, 0x0002, 0x0007, 0x000f, 94, 0xc8, false);
69 WSM_EDCA_SET(&priv->edca, 2, 0x0003, 0x000f, 0x03ff, 0, 0xc8, false);
70 WSM_EDCA_SET(&priv->edca, 3, 0x0007, 0x000f, 0x03ff, 0, 0xc8, false);
71 ret = wsm_set_edca_params(priv, &priv->edca);
72 if (ret)
73 goto out;
74
75 ret = cw1200_set_uapsd_param(priv, &priv->edca);
76 if (ret)
77 goto out;
78
79 priv->setbssparams_done = false;
80
81 memcpy(priv->mac_addr, dev->wiphy->perm_addr, ETH_ALEN);
82 priv->mode = NL80211_IFTYPE_MONITOR;
83 priv->wep_default_key_id = -1;
84
85 priv->cqm_beacon_loss_count = 10;
86
87 ret = cw1200_setup_mac(priv);
88 if (ret)
89 goto out;
90
91 out:
92 mutex_unlock(&priv->conf_mutex);
93 return ret;
94 }
95
cw1200_stop(struct ieee80211_hw * dev)96 void cw1200_stop(struct ieee80211_hw *dev)
97 {
98 struct cw1200_common *priv = dev->priv;
99 LIST_HEAD(list);
100 int i;
101
102 wsm_lock_tx(priv);
103
104 while (down_trylock(&priv->scan.lock)) {
105 /* Scan is in progress. Force it to stop. */
106 priv->scan.req = NULL;
107 schedule();
108 }
109 up(&priv->scan.lock);
110
111 cancel_delayed_work_sync(&priv->scan.probe_work);
112 cancel_delayed_work_sync(&priv->scan.timeout);
113 cancel_delayed_work_sync(&priv->clear_recent_scan_work);
114 cancel_delayed_work_sync(&priv->join_timeout);
115 cw1200_cqm_bssloss_sm(priv, 0, 0, 0);
116 cancel_work_sync(&priv->unjoin_work);
117 cancel_delayed_work_sync(&priv->link_id_gc_work);
118 flush_workqueue(priv->workqueue);
119 del_timer_sync(&priv->mcast_timeout);
120 mutex_lock(&priv->conf_mutex);
121 priv->mode = NL80211_IFTYPE_UNSPECIFIED;
122 priv->listening = false;
123
124 spin_lock(&priv->event_queue_lock);
125 list_splice_init(&priv->event_queue, &list);
126 spin_unlock(&priv->event_queue_lock);
127 __cw1200_free_event_queue(&list);
128
129
130 priv->join_status = CW1200_JOIN_STATUS_PASSIVE;
131 priv->join_pending = false;
132
133 for (i = 0; i < 4; i++)
134 cw1200_queue_clear(&priv->tx_queue[i]);
135 mutex_unlock(&priv->conf_mutex);
136 tx_policy_clean(priv);
137
138 /* HACK! */
139 if (atomic_xchg(&priv->tx_lock, 1) != 1)
140 pr_debug("[STA] TX is force-unlocked due to stop request.\n");
141
142 wsm_unlock_tx(priv);
143 atomic_xchg(&priv->tx_lock, 0); /* for recovery to work */
144 }
145
146 static int cw1200_bssloss_mitigation = 1;
147 module_param(cw1200_bssloss_mitigation, int, 0644);
148 MODULE_PARM_DESC(cw1200_bssloss_mitigation, "BSS Loss mitigation. 0 == disabled, 1 == enabled (default)");
149
150
__cw1200_cqm_bssloss_sm(struct cw1200_common * priv,int init,int good,int bad)151 void __cw1200_cqm_bssloss_sm(struct cw1200_common *priv,
152 int init, int good, int bad)
153 {
154 int tx = 0;
155
156 priv->delayed_link_loss = 0;
157 cancel_work_sync(&priv->bss_params_work);
158
159 pr_debug("[STA] CQM BSSLOSS_SM: state: %d init %d good %d bad: %d txlock: %d uj: %d\n",
160 priv->bss_loss_state,
161 init, good, bad,
162 atomic_read(&priv->tx_lock),
163 priv->delayed_unjoin);
164
165 /* If we have a pending unjoin */
166 if (priv->delayed_unjoin)
167 return;
168
169 if (init) {
170 queue_delayed_work(priv->workqueue,
171 &priv->bss_loss_work,
172 HZ);
173 priv->bss_loss_state = 0;
174
175 /* Skip the confimration procedure in P2P case */
176 if (!priv->vif->p2p && !atomic_read(&priv->tx_lock))
177 tx = 1;
178 } else if (good) {
179 cancel_delayed_work_sync(&priv->bss_loss_work);
180 priv->bss_loss_state = 0;
181 queue_work(priv->workqueue, &priv->bss_params_work);
182 } else if (bad) {
183 /* XXX Should we just keep going until we time out? */
184 if (priv->bss_loss_state < 3)
185 tx = 1;
186 } else {
187 cancel_delayed_work_sync(&priv->bss_loss_work);
188 priv->bss_loss_state = 0;
189 }
190
191 /* Bypass mitigation if it's disabled */
192 if (!cw1200_bssloss_mitigation)
193 tx = 0;
194
195 /* Spit out a NULL packet to our AP if necessary */
196 if (tx) {
197 struct sk_buff *skb;
198
199 priv->bss_loss_state++;
200
201 skb = ieee80211_nullfunc_get(priv->hw, priv->vif);
202 WARN_ON(!skb);
203 if (skb)
204 cw1200_tx(priv->hw, NULL, skb);
205 }
206 }
207
cw1200_add_interface(struct ieee80211_hw * dev,struct ieee80211_vif * vif)208 int cw1200_add_interface(struct ieee80211_hw *dev,
209 struct ieee80211_vif *vif)
210 {
211 int ret;
212 struct cw1200_common *priv = dev->priv;
213 /* __le32 auto_calibration_mode = __cpu_to_le32(1); */
214
215 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
216 IEEE80211_VIF_SUPPORTS_UAPSD |
217 IEEE80211_VIF_SUPPORTS_CQM_RSSI;
218
219 mutex_lock(&priv->conf_mutex);
220
221 if (priv->mode != NL80211_IFTYPE_MONITOR) {
222 mutex_unlock(&priv->conf_mutex);
223 return -EOPNOTSUPP;
224 }
225
226 switch (vif->type) {
227 case NL80211_IFTYPE_STATION:
228 case NL80211_IFTYPE_ADHOC:
229 case NL80211_IFTYPE_MESH_POINT:
230 case NL80211_IFTYPE_AP:
231 priv->mode = vif->type;
232 break;
233 default:
234 mutex_unlock(&priv->conf_mutex);
235 return -EOPNOTSUPP;
236 }
237
238 priv->vif = vif;
239 memcpy(priv->mac_addr, vif->addr, ETH_ALEN);
240 ret = cw1200_setup_mac(priv);
241 /* Enable auto-calibration */
242 /* Exception in subsequent channel switch; disabled.
243 * wsm_write_mib(priv, WSM_MIB_ID_SET_AUTO_CALIBRATION_MODE,
244 * &auto_calibration_mode, sizeof(auto_calibration_mode));
245 */
246
247 mutex_unlock(&priv->conf_mutex);
248 return ret;
249 }
250
cw1200_remove_interface(struct ieee80211_hw * dev,struct ieee80211_vif * vif)251 void cw1200_remove_interface(struct ieee80211_hw *dev,
252 struct ieee80211_vif *vif)
253 {
254 struct cw1200_common *priv = dev->priv;
255 struct wsm_reset reset = {
256 .reset_statistics = true,
257 };
258 int i;
259
260 mutex_lock(&priv->conf_mutex);
261 switch (priv->join_status) {
262 case CW1200_JOIN_STATUS_JOINING:
263 case CW1200_JOIN_STATUS_PRE_STA:
264 case CW1200_JOIN_STATUS_STA:
265 case CW1200_JOIN_STATUS_IBSS:
266 wsm_lock_tx(priv);
267 if (queue_work(priv->workqueue, &priv->unjoin_work) <= 0)
268 wsm_unlock_tx(priv);
269 break;
270 case CW1200_JOIN_STATUS_AP:
271 for (i = 0; priv->link_id_map; ++i) {
272 if (priv->link_id_map & BIT(i)) {
273 reset.link_id = i;
274 wsm_reset(priv, &reset);
275 priv->link_id_map &= ~BIT(i);
276 }
277 }
278 memset(priv->link_id_db, 0, sizeof(priv->link_id_db));
279 priv->sta_asleep_mask = 0;
280 priv->enable_beacon = false;
281 priv->tx_multicast = false;
282 priv->aid0_bit_set = false;
283 priv->buffered_multicasts = false;
284 priv->pspoll_mask = 0;
285 reset.link_id = 0;
286 wsm_reset(priv, &reset);
287 break;
288 case CW1200_JOIN_STATUS_MONITOR:
289 cw1200_update_listening(priv, false);
290 break;
291 default:
292 break;
293 }
294 priv->vif = NULL;
295 priv->mode = NL80211_IFTYPE_MONITOR;
296 eth_zero_addr(priv->mac_addr);
297 memset(&priv->p2p_ps_modeinfo, 0, sizeof(priv->p2p_ps_modeinfo));
298 cw1200_free_keys(priv);
299 cw1200_setup_mac(priv);
300 priv->listening = false;
301 priv->join_status = CW1200_JOIN_STATUS_PASSIVE;
302 if (!__cw1200_flush(priv, true))
303 wsm_unlock_tx(priv);
304
305 mutex_unlock(&priv->conf_mutex);
306 }
307
cw1200_change_interface(struct ieee80211_hw * dev,struct ieee80211_vif * vif,enum nl80211_iftype new_type,bool p2p)308 int cw1200_change_interface(struct ieee80211_hw *dev,
309 struct ieee80211_vif *vif,
310 enum nl80211_iftype new_type,
311 bool p2p)
312 {
313 int ret = 0;
314 pr_debug("change_interface new: %d (%d), old: %d (%d)\n", new_type,
315 p2p, vif->type, vif->p2p);
316
317 if (new_type != vif->type || vif->p2p != p2p) {
318 cw1200_remove_interface(dev, vif);
319 vif->type = new_type;
320 vif->p2p = p2p;
321 ret = cw1200_add_interface(dev, vif);
322 }
323
324 return ret;
325 }
326
cw1200_config(struct ieee80211_hw * dev,u32 changed)327 int cw1200_config(struct ieee80211_hw *dev, u32 changed)
328 {
329 int ret = 0;
330 struct cw1200_common *priv = dev->priv;
331 struct ieee80211_conf *conf = &dev->conf;
332
333 pr_debug("CONFIG CHANGED: %08x\n", changed);
334
335 down(&priv->scan.lock);
336 mutex_lock(&priv->conf_mutex);
337 /* TODO: IEEE80211_CONF_CHANGE_QOS */
338 /* TODO: IEEE80211_CONF_CHANGE_LISTEN_INTERVAL */
339
340 if (changed & IEEE80211_CONF_CHANGE_POWER) {
341 priv->output_power = conf->power_level;
342 pr_debug("[STA] TX power: %d\n", priv->output_power);
343 wsm_set_output_power(priv, priv->output_power * 10);
344 }
345
346 if ((changed & IEEE80211_CONF_CHANGE_CHANNEL) &&
347 (priv->channel != conf->chandef.chan)) {
348 struct ieee80211_channel *ch = conf->chandef.chan;
349 struct wsm_switch_channel channel = {
350 .channel_number = ch->hw_value,
351 };
352 pr_debug("[STA] Freq %d (wsm ch: %d).\n",
353 ch->center_freq, ch->hw_value);
354
355 /* __cw1200_flush() implicitly locks tx, if successful */
356 if (!__cw1200_flush(priv, false)) {
357 if (!wsm_switch_channel(priv, &channel)) {
358 ret = wait_event_timeout(priv->channel_switch_done,
359 !priv->channel_switch_in_progress,
360 3 * HZ);
361 if (ret) {
362 /* Already unlocks if successful */
363 priv->channel = ch;
364 ret = 0;
365 } else {
366 ret = -ETIMEDOUT;
367 }
368 } else {
369 /* Unlock if switch channel fails */
370 wsm_unlock_tx(priv);
371 }
372 }
373 }
374
375 if (changed & IEEE80211_CONF_CHANGE_PS) {
376 if (!(conf->flags & IEEE80211_CONF_PS))
377 priv->powersave_mode.mode = WSM_PSM_ACTIVE;
378 else if (conf->dynamic_ps_timeout <= 0)
379 priv->powersave_mode.mode = WSM_PSM_PS;
380 else
381 priv->powersave_mode.mode = WSM_PSM_FAST_PS;
382
383 /* Firmware requires that value for this 1-byte field must
384 * be specified in units of 500us. Values above the 128ms
385 * threshold are not supported.
386 */
387 if (conf->dynamic_ps_timeout >= 0x80)
388 priv->powersave_mode.fast_psm_idle_period = 0xFF;
389 else
390 priv->powersave_mode.fast_psm_idle_period =
391 conf->dynamic_ps_timeout << 1;
392
393 if (priv->join_status == CW1200_JOIN_STATUS_STA &&
394 priv->bss_params.aid)
395 cw1200_set_pm(priv, &priv->powersave_mode);
396 }
397
398 if (changed & IEEE80211_CONF_CHANGE_MONITOR) {
399 /* TBD: It looks like it's transparent
400 * there's a monitor interface present -- use this
401 * to determine for example whether to calculate
402 * timestamps for packets or not, do not use instead
403 * of filter flags!
404 */
405 }
406
407 if (changed & IEEE80211_CONF_CHANGE_IDLE) {
408 struct wsm_operational_mode mode = {
409 .power_mode = cw1200_power_mode,
410 .disable_more_flag_usage = true,
411 };
412
413 wsm_lock_tx(priv);
414 /* Disable p2p-dev mode forced by TX request */
415 if ((priv->join_status == CW1200_JOIN_STATUS_MONITOR) &&
416 (conf->flags & IEEE80211_CONF_IDLE) &&
417 !priv->listening) {
418 cw1200_disable_listening(priv);
419 priv->join_status = CW1200_JOIN_STATUS_PASSIVE;
420 }
421 wsm_set_operational_mode(priv, &mode);
422 wsm_unlock_tx(priv);
423 }
424
425 if (changed & IEEE80211_CONF_CHANGE_RETRY_LIMITS) {
426 pr_debug("[STA] Retry limits: %d (long), %d (short).\n",
427 conf->long_frame_max_tx_count,
428 conf->short_frame_max_tx_count);
429 spin_lock_bh(&priv->tx_policy_cache.lock);
430 priv->long_frame_max_tx_count = conf->long_frame_max_tx_count;
431 priv->short_frame_max_tx_count =
432 (conf->short_frame_max_tx_count < 0x0F) ?
433 conf->short_frame_max_tx_count : 0x0F;
434 priv->hw->max_rate_tries = priv->short_frame_max_tx_count;
435 spin_unlock_bh(&priv->tx_policy_cache.lock);
436 }
437 mutex_unlock(&priv->conf_mutex);
438 up(&priv->scan.lock);
439 return ret;
440 }
441
cw1200_update_filtering(struct cw1200_common * priv)442 void cw1200_update_filtering(struct cw1200_common *priv)
443 {
444 int ret;
445 bool bssid_filtering = !priv->rx_filter.bssid;
446 bool is_p2p = priv->vif && priv->vif->p2p;
447 bool is_sta = priv->vif && NL80211_IFTYPE_STATION == priv->vif->type;
448
449 static struct wsm_beacon_filter_control bf_ctrl;
450 static struct wsm_mib_beacon_filter_table bf_tbl = {
451 .entry[0].ie_id = WLAN_EID_VENDOR_SPECIFIC,
452 .entry[0].flags = WSM_BEACON_FILTER_IE_HAS_CHANGED |
453 WSM_BEACON_FILTER_IE_NO_LONGER_PRESENT |
454 WSM_BEACON_FILTER_IE_HAS_APPEARED,
455 .entry[0].oui[0] = 0x50,
456 .entry[0].oui[1] = 0x6F,
457 .entry[0].oui[2] = 0x9A,
458 .entry[1].ie_id = WLAN_EID_HT_OPERATION,
459 .entry[1].flags = WSM_BEACON_FILTER_IE_HAS_CHANGED |
460 WSM_BEACON_FILTER_IE_NO_LONGER_PRESENT |
461 WSM_BEACON_FILTER_IE_HAS_APPEARED,
462 .entry[2].ie_id = WLAN_EID_ERP_INFO,
463 .entry[2].flags = WSM_BEACON_FILTER_IE_HAS_CHANGED |
464 WSM_BEACON_FILTER_IE_NO_LONGER_PRESENT |
465 WSM_BEACON_FILTER_IE_HAS_APPEARED,
466 };
467
468 if (priv->join_status == CW1200_JOIN_STATUS_PASSIVE)
469 return;
470 else if (priv->join_status == CW1200_JOIN_STATUS_MONITOR)
471 bssid_filtering = false;
472
473 if (priv->disable_beacon_filter) {
474 bf_ctrl.enabled = 0;
475 bf_ctrl.bcn_count = 1;
476 bf_tbl.num = __cpu_to_le32(0);
477 } else if (is_p2p || !is_sta) {
478 bf_ctrl.enabled = WSM_BEACON_FILTER_ENABLE |
479 WSM_BEACON_FILTER_AUTO_ERP;
480 bf_ctrl.bcn_count = 0;
481 bf_tbl.num = __cpu_to_le32(2);
482 } else {
483 bf_ctrl.enabled = WSM_BEACON_FILTER_ENABLE;
484 bf_ctrl.bcn_count = 0;
485 bf_tbl.num = __cpu_to_le32(3);
486 }
487
488 /* When acting as p2p client being connected to p2p GO, in order to
489 * receive frames from a different p2p device, turn off bssid filter.
490 *
491 * WARNING: FW dependency!
492 * This can only be used with FW WSM371 and its successors.
493 * In that FW version even with bssid filter turned off,
494 * device will block most of the unwanted frames.
495 */
496 if (is_p2p)
497 bssid_filtering = false;
498
499 ret = wsm_set_rx_filter(priv, &priv->rx_filter);
500 if (!ret)
501 ret = wsm_set_beacon_filter_table(priv, &bf_tbl);
502 if (!ret)
503 ret = wsm_beacon_filter_control(priv, &bf_ctrl);
504 if (!ret)
505 ret = wsm_set_bssid_filtering(priv, bssid_filtering);
506 if (!ret)
507 ret = wsm_set_multicast_filter(priv, &priv->multicast_filter);
508 if (ret)
509 wiphy_err(priv->hw->wiphy,
510 "Update filtering failed: %d.\n", ret);
511 return;
512 }
513
cw1200_update_filtering_work(struct work_struct * work)514 void cw1200_update_filtering_work(struct work_struct *work)
515 {
516 struct cw1200_common *priv =
517 container_of(work, struct cw1200_common,
518 update_filtering_work);
519
520 cw1200_update_filtering(priv);
521 }
522
cw1200_set_beacon_wakeup_period_work(struct work_struct * work)523 void cw1200_set_beacon_wakeup_period_work(struct work_struct *work)
524 {
525 struct cw1200_common *priv =
526 container_of(work, struct cw1200_common,
527 set_beacon_wakeup_period_work);
528
529 wsm_set_beacon_wakeup_period(priv,
530 priv->beacon_int * priv->join_dtim_period >
531 MAX_BEACON_SKIP_TIME_MS ? 1 :
532 priv->join_dtim_period, 0);
533 }
534
cw1200_prepare_multicast(struct ieee80211_hw * hw,struct netdev_hw_addr_list * mc_list)535 u64 cw1200_prepare_multicast(struct ieee80211_hw *hw,
536 struct netdev_hw_addr_list *mc_list)
537 {
538 static u8 broadcast_ipv6[ETH_ALEN] = {
539 0x33, 0x33, 0x00, 0x00, 0x00, 0x01
540 };
541 static u8 broadcast_ipv4[ETH_ALEN] = {
542 0x01, 0x00, 0x5e, 0x00, 0x00, 0x01
543 };
544 struct cw1200_common *priv = hw->priv;
545 struct netdev_hw_addr *ha;
546 int count = 0;
547
548 /* Disable multicast filtering */
549 priv->has_multicast_subscription = false;
550 memset(&priv->multicast_filter, 0x00, sizeof(priv->multicast_filter));
551
552 if (netdev_hw_addr_list_count(mc_list) > WSM_MAX_GRP_ADDRTABLE_ENTRIES)
553 return 0;
554
555 /* Enable if requested */
556 netdev_hw_addr_list_for_each(ha, mc_list) {
557 pr_debug("[STA] multicast: %pM\n", ha->addr);
558 memcpy(&priv->multicast_filter.macaddrs[count],
559 ha->addr, ETH_ALEN);
560 if (!ether_addr_equal(ha->addr, broadcast_ipv4) &&
561 !ether_addr_equal(ha->addr, broadcast_ipv6))
562 priv->has_multicast_subscription = true;
563 count++;
564 }
565
566 if (count) {
567 priv->multicast_filter.enable = __cpu_to_le32(1);
568 priv->multicast_filter.num_addrs = __cpu_to_le32(count);
569 }
570
571 return netdev_hw_addr_list_count(mc_list);
572 }
573
cw1200_configure_filter(struct ieee80211_hw * dev,unsigned int changed_flags,unsigned int * total_flags,u64 multicast)574 void cw1200_configure_filter(struct ieee80211_hw *dev,
575 unsigned int changed_flags,
576 unsigned int *total_flags,
577 u64 multicast)
578 {
579 struct cw1200_common *priv = dev->priv;
580 bool listening = !!(*total_flags &
581 (FIF_OTHER_BSS |
582 FIF_BCN_PRBRESP_PROMISC |
583 FIF_PROBE_REQ));
584
585 *total_flags &= FIF_OTHER_BSS |
586 FIF_FCSFAIL |
587 FIF_BCN_PRBRESP_PROMISC |
588 FIF_PROBE_REQ;
589
590 down(&priv->scan.lock);
591 mutex_lock(&priv->conf_mutex);
592
593 priv->rx_filter.promiscuous = 0;
594 priv->rx_filter.bssid = (*total_flags & (FIF_OTHER_BSS |
595 FIF_PROBE_REQ)) ? 1 : 0;
596 priv->rx_filter.fcs = (*total_flags & FIF_FCSFAIL) ? 1 : 0;
597 priv->disable_beacon_filter = !(*total_flags &
598 (FIF_BCN_PRBRESP_PROMISC |
599 FIF_PROBE_REQ));
600 if (priv->listening != listening) {
601 priv->listening = listening;
602 wsm_lock_tx(priv);
603 cw1200_update_listening(priv, listening);
604 wsm_unlock_tx(priv);
605 }
606 cw1200_update_filtering(priv);
607 mutex_unlock(&priv->conf_mutex);
608 up(&priv->scan.lock);
609 }
610
cw1200_conf_tx(struct ieee80211_hw * dev,struct ieee80211_vif * vif,u16 queue,const struct ieee80211_tx_queue_params * params)611 int cw1200_conf_tx(struct ieee80211_hw *dev, struct ieee80211_vif *vif,
612 u16 queue, const struct ieee80211_tx_queue_params *params)
613 {
614 struct cw1200_common *priv = dev->priv;
615 int ret = 0;
616 /* To prevent re-applying PM request OID again and again*/
617 bool old_uapsd_flags;
618
619 mutex_lock(&priv->conf_mutex);
620
621 if (queue < dev->queues) {
622 old_uapsd_flags = le16_to_cpu(priv->uapsd_info.uapsd_flags);
623
624 WSM_TX_QUEUE_SET(&priv->tx_queue_params, queue, 0, 0, 0);
625 ret = wsm_set_tx_queue_params(priv,
626 &priv->tx_queue_params.params[queue], queue);
627 if (ret) {
628 ret = -EINVAL;
629 goto out;
630 }
631
632 WSM_EDCA_SET(&priv->edca, queue, params->aifs,
633 params->cw_min, params->cw_max,
634 params->txop, 0xc8,
635 params->uapsd);
636 ret = wsm_set_edca_params(priv, &priv->edca);
637 if (ret) {
638 ret = -EINVAL;
639 goto out;
640 }
641
642 if (priv->mode == NL80211_IFTYPE_STATION) {
643 ret = cw1200_set_uapsd_param(priv, &priv->edca);
644 if (!ret && priv->setbssparams_done &&
645 (priv->join_status == CW1200_JOIN_STATUS_STA) &&
646 (old_uapsd_flags != le16_to_cpu(priv->uapsd_info.uapsd_flags)))
647 ret = cw1200_set_pm(priv, &priv->powersave_mode);
648 }
649 } else {
650 ret = -EINVAL;
651 }
652
653 out:
654 mutex_unlock(&priv->conf_mutex);
655 return ret;
656 }
657
cw1200_get_stats(struct ieee80211_hw * dev,struct ieee80211_low_level_stats * stats)658 int cw1200_get_stats(struct ieee80211_hw *dev,
659 struct ieee80211_low_level_stats *stats)
660 {
661 struct cw1200_common *priv = dev->priv;
662
663 memcpy(stats, &priv->stats, sizeof(*stats));
664 return 0;
665 }
666
cw1200_set_pm(struct cw1200_common * priv,const struct wsm_set_pm * arg)667 int cw1200_set_pm(struct cw1200_common *priv, const struct wsm_set_pm *arg)
668 {
669 struct wsm_set_pm pm = *arg;
670
671 if (priv->uapsd_info.uapsd_flags != 0)
672 pm.mode &= ~WSM_PSM_FAST_PS_FLAG;
673
674 if (memcmp(&pm, &priv->firmware_ps_mode,
675 sizeof(struct wsm_set_pm))) {
676 priv->firmware_ps_mode = pm;
677 return wsm_set_pm(priv, &pm);
678 } else {
679 return 0;
680 }
681 }
682
cw1200_set_key(struct ieee80211_hw * dev,enum set_key_cmd cmd,struct ieee80211_vif * vif,struct ieee80211_sta * sta,struct ieee80211_key_conf * key)683 int cw1200_set_key(struct ieee80211_hw *dev, enum set_key_cmd cmd,
684 struct ieee80211_vif *vif, struct ieee80211_sta *sta,
685 struct ieee80211_key_conf *key)
686 {
687 int ret = -EOPNOTSUPP;
688 struct cw1200_common *priv = dev->priv;
689 struct ieee80211_key_seq seq;
690
691 mutex_lock(&priv->conf_mutex);
692
693 if (cmd == SET_KEY) {
694 u8 *peer_addr = NULL;
695 int pairwise = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) ?
696 1 : 0;
697 int idx = cw1200_alloc_key(priv);
698 struct wsm_add_key *wsm_key = &priv->keys[idx];
699
700 if (idx < 0) {
701 ret = -EINVAL;
702 goto finally;
703 }
704
705 if (sta)
706 peer_addr = sta->addr;
707
708 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE |
709 IEEE80211_KEY_FLAG_RESERVE_TAILROOM;
710
711 switch (key->cipher) {
712 case WLAN_CIPHER_SUITE_WEP40:
713 case WLAN_CIPHER_SUITE_WEP104:
714 if (key->keylen > 16) {
715 cw1200_free_key(priv, idx);
716 ret = -EINVAL;
717 goto finally;
718 }
719
720 if (pairwise) {
721 wsm_key->type = WSM_KEY_TYPE_WEP_PAIRWISE;
722 memcpy(wsm_key->wep_pairwise.peer,
723 peer_addr, ETH_ALEN);
724 memcpy(wsm_key->wep_pairwise.keydata,
725 &key->key[0], key->keylen);
726 wsm_key->wep_pairwise.keylen = key->keylen;
727 } else {
728 wsm_key->type = WSM_KEY_TYPE_WEP_DEFAULT;
729 memcpy(wsm_key->wep_group.keydata,
730 &key->key[0], key->keylen);
731 wsm_key->wep_group.keylen = key->keylen;
732 wsm_key->wep_group.keyid = key->keyidx;
733 }
734 break;
735 case WLAN_CIPHER_SUITE_TKIP:
736 ieee80211_get_key_rx_seq(key, 0, &seq);
737 if (pairwise) {
738 wsm_key->type = WSM_KEY_TYPE_TKIP_PAIRWISE;
739 memcpy(wsm_key->tkip_pairwise.peer,
740 peer_addr, ETH_ALEN);
741 memcpy(wsm_key->tkip_pairwise.keydata,
742 &key->key[0], 16);
743 memcpy(wsm_key->tkip_pairwise.tx_mic_key,
744 &key->key[16], 8);
745 memcpy(wsm_key->tkip_pairwise.rx_mic_key,
746 &key->key[24], 8);
747 } else {
748 size_t mic_offset =
749 (priv->mode == NL80211_IFTYPE_AP) ?
750 16 : 24;
751 wsm_key->type = WSM_KEY_TYPE_TKIP_GROUP;
752 memcpy(wsm_key->tkip_group.keydata,
753 &key->key[0], 16);
754 memcpy(wsm_key->tkip_group.rx_mic_key,
755 &key->key[mic_offset], 8);
756
757 wsm_key->tkip_group.rx_seqnum[0] = seq.tkip.iv16 & 0xff;
758 wsm_key->tkip_group.rx_seqnum[1] = (seq.tkip.iv16 >> 8) & 0xff;
759 wsm_key->tkip_group.rx_seqnum[2] = seq.tkip.iv32 & 0xff;
760 wsm_key->tkip_group.rx_seqnum[3] = (seq.tkip.iv32 >> 8) & 0xff;
761 wsm_key->tkip_group.rx_seqnum[4] = (seq.tkip.iv32 >> 16) & 0xff;
762 wsm_key->tkip_group.rx_seqnum[5] = (seq.tkip.iv32 >> 24) & 0xff;
763 wsm_key->tkip_group.rx_seqnum[6] = 0;
764 wsm_key->tkip_group.rx_seqnum[7] = 0;
765
766 wsm_key->tkip_group.keyid = key->keyidx;
767 }
768 break;
769 case WLAN_CIPHER_SUITE_CCMP:
770 ieee80211_get_key_rx_seq(key, 0, &seq);
771 if (pairwise) {
772 wsm_key->type = WSM_KEY_TYPE_AES_PAIRWISE;
773 memcpy(wsm_key->aes_pairwise.peer,
774 peer_addr, ETH_ALEN);
775 memcpy(wsm_key->aes_pairwise.keydata,
776 &key->key[0], 16);
777 } else {
778 wsm_key->type = WSM_KEY_TYPE_AES_GROUP;
779 memcpy(wsm_key->aes_group.keydata,
780 &key->key[0], 16);
781
782 wsm_key->aes_group.rx_seqnum[0] = seq.ccmp.pn[5];
783 wsm_key->aes_group.rx_seqnum[1] = seq.ccmp.pn[4];
784 wsm_key->aes_group.rx_seqnum[2] = seq.ccmp.pn[3];
785 wsm_key->aes_group.rx_seqnum[3] = seq.ccmp.pn[2];
786 wsm_key->aes_group.rx_seqnum[4] = seq.ccmp.pn[1];
787 wsm_key->aes_group.rx_seqnum[5] = seq.ccmp.pn[0];
788 wsm_key->aes_group.rx_seqnum[6] = 0;
789 wsm_key->aes_group.rx_seqnum[7] = 0;
790 wsm_key->aes_group.keyid = key->keyidx;
791 }
792 break;
793 case WLAN_CIPHER_SUITE_SMS4:
794 if (pairwise) {
795 wsm_key->type = WSM_KEY_TYPE_WAPI_PAIRWISE;
796 memcpy(wsm_key->wapi_pairwise.peer,
797 peer_addr, ETH_ALEN);
798 memcpy(wsm_key->wapi_pairwise.keydata,
799 &key->key[0], 16);
800 memcpy(wsm_key->wapi_pairwise.mic_key,
801 &key->key[16], 16);
802 wsm_key->wapi_pairwise.keyid = key->keyidx;
803 } else {
804 wsm_key->type = WSM_KEY_TYPE_WAPI_GROUP;
805 memcpy(wsm_key->wapi_group.keydata,
806 &key->key[0], 16);
807 memcpy(wsm_key->wapi_group.mic_key,
808 &key->key[16], 16);
809 wsm_key->wapi_group.keyid = key->keyidx;
810 }
811 break;
812 default:
813 pr_warn("Unhandled key type %d\n", key->cipher);
814 cw1200_free_key(priv, idx);
815 ret = -EOPNOTSUPP;
816 goto finally;
817 }
818 ret = wsm_add_key(priv, wsm_key);
819 if (!ret)
820 key->hw_key_idx = idx;
821 else
822 cw1200_free_key(priv, idx);
823 } else if (cmd == DISABLE_KEY) {
824 struct wsm_remove_key wsm_key = {
825 .index = key->hw_key_idx,
826 };
827
828 if (wsm_key.index > WSM_KEY_MAX_INDEX) {
829 ret = -EINVAL;
830 goto finally;
831 }
832
833 cw1200_free_key(priv, wsm_key.index);
834 ret = wsm_remove_key(priv, &wsm_key);
835 } else {
836 pr_warn("Unhandled key command %d\n", cmd);
837 }
838
839 finally:
840 mutex_unlock(&priv->conf_mutex);
841 return ret;
842 }
843
cw1200_wep_key_work(struct work_struct * work)844 void cw1200_wep_key_work(struct work_struct *work)
845 {
846 struct cw1200_common *priv =
847 container_of(work, struct cw1200_common, wep_key_work);
848 u8 queue_id = cw1200_queue_get_queue_id(priv->pending_frame_id);
849 struct cw1200_queue *queue = &priv->tx_queue[queue_id];
850 __le32 wep_default_key_id = __cpu_to_le32(
851 priv->wep_default_key_id);
852
853 pr_debug("[STA] Setting default WEP key: %d\n",
854 priv->wep_default_key_id);
855 wsm_flush_tx(priv);
856 wsm_write_mib(priv, WSM_MIB_ID_DOT11_WEP_DEFAULT_KEY_ID,
857 &wep_default_key_id, sizeof(wep_default_key_id));
858 cw1200_queue_requeue(queue, priv->pending_frame_id);
859 wsm_unlock_tx(priv);
860 }
861
cw1200_set_rts_threshold(struct ieee80211_hw * hw,u32 value)862 int cw1200_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
863 {
864 int ret = 0;
865 __le32 val32;
866 struct cw1200_common *priv = hw->priv;
867
868 if (priv->mode == NL80211_IFTYPE_UNSPECIFIED)
869 return 0;
870
871 if (value != (u32) -1)
872 val32 = __cpu_to_le32(value);
873 else
874 val32 = 0; /* disabled */
875
876 if (priv->mode == NL80211_IFTYPE_UNSPECIFIED) {
877 /* device is down, can _not_ set threshold */
878 ret = -ENODEV;
879 goto out;
880 }
881
882 if (priv->rts_threshold == value)
883 goto out;
884
885 pr_debug("[STA] Setting RTS threshold: %d\n",
886 priv->rts_threshold);
887
888 /* mutex_lock(&priv->conf_mutex); */
889 ret = wsm_write_mib(priv, WSM_MIB_ID_DOT11_RTS_THRESHOLD,
890 &val32, sizeof(val32));
891 if (!ret)
892 priv->rts_threshold = value;
893 /* mutex_unlock(&priv->conf_mutex); */
894
895 out:
896 return ret;
897 }
898
899 /* If successful, LOCKS the TX queue! */
__cw1200_flush(struct cw1200_common * priv,bool drop)900 static int __cw1200_flush(struct cw1200_common *priv, bool drop)
901 {
902 int i, ret;
903
904 for (;;) {
905 /* TODO: correct flush handling is required when dev_stop.
906 * Temporary workaround: 2s
907 */
908 if (drop) {
909 for (i = 0; i < 4; ++i)
910 cw1200_queue_clear(&priv->tx_queue[i]);
911 } else {
912 ret = wait_event_timeout(
913 priv->tx_queue_stats.wait_link_id_empty,
914 cw1200_queue_stats_is_empty(
915 &priv->tx_queue_stats, -1),
916 2 * HZ);
917 }
918
919 if (!drop && ret <= 0) {
920 ret = -ETIMEDOUT;
921 break;
922 } else {
923 ret = 0;
924 }
925
926 wsm_lock_tx(priv);
927 if (!cw1200_queue_stats_is_empty(&priv->tx_queue_stats, -1)) {
928 /* Highly unlikely: WSM requeued frames. */
929 wsm_unlock_tx(priv);
930 continue;
931 }
932 break;
933 }
934 return ret;
935 }
936
cw1200_flush(struct ieee80211_hw * hw,struct ieee80211_vif * vif,u32 queues,bool drop)937 void cw1200_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
938 u32 queues, bool drop)
939 {
940 struct cw1200_common *priv = hw->priv;
941
942 switch (priv->mode) {
943 case NL80211_IFTYPE_MONITOR:
944 drop = true;
945 break;
946 case NL80211_IFTYPE_AP:
947 if (!priv->enable_beacon)
948 drop = true;
949 break;
950 }
951
952 if (!__cw1200_flush(priv, drop))
953 wsm_unlock_tx(priv);
954
955 return;
956 }
957
958 /* ******************************************************************** */
959 /* WSM callbacks */
960
cw1200_free_event_queue(struct cw1200_common * priv)961 void cw1200_free_event_queue(struct cw1200_common *priv)
962 {
963 LIST_HEAD(list);
964
965 spin_lock(&priv->event_queue_lock);
966 list_splice_init(&priv->event_queue, &list);
967 spin_unlock(&priv->event_queue_lock);
968
969 __cw1200_free_event_queue(&list);
970 }
971
cw1200_event_handler(struct work_struct * work)972 void cw1200_event_handler(struct work_struct *work)
973 {
974 struct cw1200_common *priv =
975 container_of(work, struct cw1200_common, event_handler);
976 struct cw1200_wsm_event *event;
977 LIST_HEAD(list);
978
979 spin_lock(&priv->event_queue_lock);
980 list_splice_init(&priv->event_queue, &list);
981 spin_unlock(&priv->event_queue_lock);
982
983 list_for_each_entry(event, &list, link) {
984 switch (event->evt.id) {
985 case WSM_EVENT_ERROR:
986 pr_err("Unhandled WSM Error from LMAC\n");
987 break;
988 case WSM_EVENT_BSS_LOST:
989 pr_debug("[CQM] BSS lost.\n");
990 cancel_work_sync(&priv->unjoin_work);
991 if (!down_trylock(&priv->scan.lock)) {
992 cw1200_cqm_bssloss_sm(priv, 1, 0, 0);
993 up(&priv->scan.lock);
994 } else {
995 /* Scan is in progress. Delay reporting.
996 * Scan complete will trigger bss_loss_work
997 */
998 priv->delayed_link_loss = 1;
999 /* Also start a watchdog. */
1000 queue_delayed_work(priv->workqueue,
1001 &priv->bss_loss_work, 5*HZ);
1002 }
1003 break;
1004 case WSM_EVENT_BSS_REGAINED:
1005 pr_debug("[CQM] BSS regained.\n");
1006 cw1200_cqm_bssloss_sm(priv, 0, 0, 0);
1007 cancel_work_sync(&priv->unjoin_work);
1008 break;
1009 case WSM_EVENT_RADAR_DETECTED:
1010 wiphy_info(priv->hw->wiphy, "radar pulse detected\n");
1011 break;
1012 case WSM_EVENT_RCPI_RSSI:
1013 {
1014 /* RSSI: signed Q8.0, RCPI: unsigned Q7.1
1015 * RSSI = RCPI / 2 - 110
1016 */
1017 int rcpi_rssi = (int)(event->evt.data & 0xFF);
1018 int cqm_evt;
1019 if (priv->cqm_use_rssi)
1020 rcpi_rssi = (s8)rcpi_rssi;
1021 else
1022 rcpi_rssi = rcpi_rssi / 2 - 110;
1023
1024 cqm_evt = (rcpi_rssi <= priv->cqm_rssi_thold) ?
1025 NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW :
1026 NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH;
1027 pr_debug("[CQM] RSSI event: %d.\n", rcpi_rssi);
1028 ieee80211_cqm_rssi_notify(priv->vif, cqm_evt,
1029 GFP_KERNEL);
1030 break;
1031 }
1032 case WSM_EVENT_BT_INACTIVE:
1033 pr_warn("Unhandled BT INACTIVE from LMAC\n");
1034 break;
1035 case WSM_EVENT_BT_ACTIVE:
1036 pr_warn("Unhandled BT ACTIVE from LMAC\n");
1037 break;
1038 }
1039 }
1040 __cw1200_free_event_queue(&list);
1041 }
1042
cw1200_bss_loss_work(struct work_struct * work)1043 void cw1200_bss_loss_work(struct work_struct *work)
1044 {
1045 struct cw1200_common *priv =
1046 container_of(work, struct cw1200_common, bss_loss_work.work);
1047
1048 pr_debug("[CQM] Reporting connection loss.\n");
1049 wsm_lock_tx(priv);
1050 if (queue_work(priv->workqueue, &priv->unjoin_work) <= 0)
1051 wsm_unlock_tx(priv);
1052 }
1053
cw1200_bss_params_work(struct work_struct * work)1054 void cw1200_bss_params_work(struct work_struct *work)
1055 {
1056 struct cw1200_common *priv =
1057 container_of(work, struct cw1200_common, bss_params_work);
1058 mutex_lock(&priv->conf_mutex);
1059
1060 priv->bss_params.reset_beacon_loss = 1;
1061 wsm_set_bss_params(priv, &priv->bss_params);
1062 priv->bss_params.reset_beacon_loss = 0;
1063
1064 mutex_unlock(&priv->conf_mutex);
1065 }
1066
1067 /* ******************************************************************** */
1068 /* Internal API */
1069
1070 /* This function is called to Parse the SDD file
1071 * to extract listen_interval and PTA related information
1072 * sdd is a TLV: u8 id, u8 len, u8 data[]
1073 */
cw1200_parse_sdd_file(struct cw1200_common * priv)1074 static int cw1200_parse_sdd_file(struct cw1200_common *priv)
1075 {
1076 const u8 *p = priv->sdd->data;
1077 int ret = 0;
1078
1079 while (p + 2 <= priv->sdd->data + priv->sdd->size) {
1080 if (p + p[1] + 2 > priv->sdd->data + priv->sdd->size) {
1081 pr_warn("Malformed sdd structure\n");
1082 return -1;
1083 }
1084 switch (p[0]) {
1085 case SDD_PTA_CFG_ELT_ID: {
1086 u16 v;
1087 if (p[1] < 4) {
1088 pr_warn("SDD_PTA_CFG_ELT_ID malformed\n");
1089 ret = -1;
1090 break;
1091 }
1092 v = le16_to_cpu(*((__le16 *)(p + 2)));
1093 if (!v) /* non-zero means this is enabled */
1094 break;
1095
1096 v = le16_to_cpu(*((__le16 *)(p + 4)));
1097 priv->conf_listen_interval = (v >> 7) & 0x1F;
1098 pr_debug("PTA found; Listen Interval %d\n",
1099 priv->conf_listen_interval);
1100 break;
1101 }
1102 case SDD_REFERENCE_FREQUENCY_ELT_ID: {
1103 u16 clk = le16_to_cpu(*((__le16 *)(p + 2)));
1104 if (clk != priv->hw_refclk)
1105 pr_warn("SDD file doesn't match configured refclk (%d vs %d)\n",
1106 clk, priv->hw_refclk);
1107 break;
1108 }
1109 default:
1110 break;
1111 }
1112 p += p[1] + 2;
1113 }
1114
1115 if (!priv->bt_present) {
1116 pr_debug("PTA element NOT found.\n");
1117 priv->conf_listen_interval = 0;
1118 }
1119 return ret;
1120 }
1121
cw1200_setup_mac(struct cw1200_common * priv)1122 int cw1200_setup_mac(struct cw1200_common *priv)
1123 {
1124 int ret = 0;
1125
1126 /* NOTE: There is a bug in FW: it reports signal
1127 * as RSSI if RSSI subscription is enabled.
1128 * It's not enough to set WSM_RCPI_RSSI_USE_RSSI.
1129 *
1130 * NOTE2: RSSI based reports have been switched to RCPI, since
1131 * FW has a bug and RSSI reported values are not stable,
1132 * what can leads to signal level oscilations in user-end applications
1133 */
1134 struct wsm_rcpi_rssi_threshold threshold = {
1135 .rssiRcpiMode = WSM_RCPI_RSSI_THRESHOLD_ENABLE |
1136 WSM_RCPI_RSSI_DONT_USE_UPPER |
1137 WSM_RCPI_RSSI_DONT_USE_LOWER,
1138 .rollingAverageCount = 16,
1139 };
1140
1141 struct wsm_configuration cfg = {
1142 .dot11StationId = &priv->mac_addr[0],
1143 };
1144
1145 /* Remember the decission here to make sure, we will handle
1146 * the RCPI/RSSI value correctly on WSM_EVENT_RCPI_RSS
1147 */
1148 if (threshold.rssiRcpiMode & WSM_RCPI_RSSI_USE_RSSI)
1149 priv->cqm_use_rssi = true;
1150
1151 if (!priv->sdd) {
1152 ret = request_firmware(&priv->sdd, priv->sdd_path, priv->pdev);
1153 if (ret) {
1154 pr_err("Can't load sdd file %s.\n", priv->sdd_path);
1155 return ret;
1156 }
1157 cw1200_parse_sdd_file(priv);
1158 }
1159
1160 cfg.dpdData = priv->sdd->data;
1161 cfg.dpdData_size = priv->sdd->size;
1162 ret = wsm_configuration(priv, &cfg);
1163 if (ret)
1164 return ret;
1165
1166 /* Configure RSSI/SCPI reporting as RSSI. */
1167 wsm_set_rcpi_rssi_threshold(priv, &threshold);
1168
1169 return 0;
1170 }
1171
cw1200_join_complete(struct cw1200_common * priv)1172 static void cw1200_join_complete(struct cw1200_common *priv)
1173 {
1174 pr_debug("[STA] Join complete (%d)\n", priv->join_complete_status);
1175
1176 priv->join_pending = false;
1177 if (priv->join_complete_status) {
1178 priv->join_status = CW1200_JOIN_STATUS_PASSIVE;
1179 cw1200_update_listening(priv, priv->listening);
1180 cw1200_do_unjoin(priv);
1181 ieee80211_connection_loss(priv->vif);
1182 } else {
1183 if (priv->mode == NL80211_IFTYPE_ADHOC)
1184 priv->join_status = CW1200_JOIN_STATUS_IBSS;
1185 else
1186 priv->join_status = CW1200_JOIN_STATUS_PRE_STA;
1187 }
1188 wsm_unlock_tx(priv); /* Clearing the lock held before do_join() */
1189 }
1190
cw1200_join_complete_work(struct work_struct * work)1191 void cw1200_join_complete_work(struct work_struct *work)
1192 {
1193 struct cw1200_common *priv =
1194 container_of(work, struct cw1200_common, join_complete_work);
1195 mutex_lock(&priv->conf_mutex);
1196 cw1200_join_complete(priv);
1197 mutex_unlock(&priv->conf_mutex);
1198 }
1199
cw1200_join_complete_cb(struct cw1200_common * priv,struct wsm_join_complete * arg)1200 void cw1200_join_complete_cb(struct cw1200_common *priv,
1201 struct wsm_join_complete *arg)
1202 {
1203 pr_debug("[STA] cw1200_join_complete_cb called, status=%d.\n",
1204 arg->status);
1205
1206 if (cancel_delayed_work(&priv->join_timeout)) {
1207 priv->join_complete_status = arg->status;
1208 queue_work(priv->workqueue, &priv->join_complete_work);
1209 }
1210 }
1211
1212 /* MUST be called with tx_lock held! It will be unlocked for us. */
cw1200_do_join(struct cw1200_common * priv)1213 static void cw1200_do_join(struct cw1200_common *priv)
1214 {
1215 const u8 *bssid;
1216 struct ieee80211_bss_conf *conf = &priv->vif->bss_conf;
1217 struct cfg80211_bss *bss = NULL;
1218 struct wsm_protected_mgmt_policy mgmt_policy;
1219 struct wsm_join join = {
1220 .mode = conf->ibss_joined ?
1221 WSM_JOIN_MODE_IBSS : WSM_JOIN_MODE_BSS,
1222 .preamble_type = WSM_JOIN_PREAMBLE_LONG,
1223 .probe_for_join = 1,
1224 .atim_window = 0,
1225 .basic_rate_set = cw1200_rate_mask_to_wsm(priv,
1226 conf->basic_rates),
1227 };
1228 if (delayed_work_pending(&priv->join_timeout)) {
1229 pr_warn("[STA] - Join request already pending, skipping..\n");
1230 wsm_unlock_tx(priv);
1231 return;
1232 }
1233
1234 if (priv->join_status)
1235 cw1200_do_unjoin(priv);
1236
1237 bssid = priv->vif->bss_conf.bssid;
1238
1239 bss = cfg80211_get_bss(priv->hw->wiphy, priv->channel, bssid, NULL, 0,
1240 IEEE80211_BSS_TYPE_ANY, IEEE80211_PRIVACY_ANY);
1241
1242 if (!bss && !conf->ibss_joined) {
1243 wsm_unlock_tx(priv);
1244 return;
1245 }
1246
1247 mutex_lock(&priv->conf_mutex);
1248
1249 /* Under the conf lock: check scan status and
1250 * bail out if it is in progress.
1251 */
1252 if (atomic_read(&priv->scan.in_progress)) {
1253 wsm_unlock_tx(priv);
1254 goto done_put;
1255 }
1256
1257 priv->join_pending = true;
1258
1259 /* Sanity check basic rates */
1260 if (!join.basic_rate_set)
1261 join.basic_rate_set = 7;
1262
1263 /* Sanity check beacon interval */
1264 if (!priv->beacon_int)
1265 priv->beacon_int = 1;
1266
1267 join.beacon_interval = priv->beacon_int;
1268
1269 /* BT Coex related changes */
1270 if (priv->bt_present) {
1271 if (((priv->conf_listen_interval * 100) %
1272 priv->beacon_int) == 0)
1273 priv->listen_interval =
1274 ((priv->conf_listen_interval * 100) /
1275 priv->beacon_int);
1276 else
1277 priv->listen_interval =
1278 ((priv->conf_listen_interval * 100) /
1279 priv->beacon_int + 1);
1280 }
1281
1282 if (priv->hw->conf.ps_dtim_period)
1283 priv->join_dtim_period = priv->hw->conf.ps_dtim_period;
1284 join.dtim_period = priv->join_dtim_period;
1285
1286 join.channel_number = priv->channel->hw_value;
1287 join.band = (priv->channel->band == IEEE80211_BAND_5GHZ) ?
1288 WSM_PHY_BAND_5G : WSM_PHY_BAND_2_4G;
1289
1290 memcpy(join.bssid, bssid, sizeof(join.bssid));
1291
1292 pr_debug("[STA] Join BSSID: %pM DTIM: %d, interval: %d\n",
1293 join.bssid,
1294 join.dtim_period, priv->beacon_int);
1295
1296 if (!conf->ibss_joined) {
1297 const u8 *ssidie;
1298 rcu_read_lock();
1299 ssidie = ieee80211_bss_get_ie(bss, WLAN_EID_SSID);
1300 if (ssidie) {
1301 join.ssid_len = ssidie[1];
1302 memcpy(join.ssid, &ssidie[2], join.ssid_len);
1303 }
1304 rcu_read_unlock();
1305 }
1306
1307 if (priv->vif->p2p) {
1308 join.flags |= WSM_JOIN_FLAGS_P2P_GO;
1309 join.basic_rate_set =
1310 cw1200_rate_mask_to_wsm(priv, 0xFF0);
1311 }
1312
1313 /* Enable asynchronous join calls */
1314 if (!conf->ibss_joined) {
1315 join.flags |= WSM_JOIN_FLAGS_FORCE;
1316 join.flags |= WSM_JOIN_FLAGS_FORCE_WITH_COMPLETE_IND;
1317 }
1318
1319 wsm_flush_tx(priv);
1320
1321 /* Stay Awake for Join and Auth Timeouts and a bit more */
1322 cw1200_pm_stay_awake(&priv->pm_state,
1323 CW1200_JOIN_TIMEOUT + CW1200_AUTH_TIMEOUT);
1324
1325 cw1200_update_listening(priv, false);
1326
1327 /* Turn on Block ACKs */
1328 wsm_set_block_ack_policy(priv, priv->ba_tx_tid_mask,
1329 priv->ba_rx_tid_mask);
1330
1331 /* Set up timeout */
1332 if (join.flags & WSM_JOIN_FLAGS_FORCE_WITH_COMPLETE_IND) {
1333 priv->join_status = CW1200_JOIN_STATUS_JOINING;
1334 queue_delayed_work(priv->workqueue,
1335 &priv->join_timeout,
1336 CW1200_JOIN_TIMEOUT);
1337 }
1338
1339 /* 802.11w protected mgmt frames */
1340 mgmt_policy.protectedMgmtEnable = 0;
1341 mgmt_policy.unprotectedMgmtFramesAllowed = 1;
1342 mgmt_policy.encryptionForAuthFrame = 1;
1343 wsm_set_protected_mgmt_policy(priv, &mgmt_policy);
1344
1345 /* Perform actual join */
1346 if (wsm_join(priv, &join)) {
1347 pr_err("[STA] cw1200_join_work: wsm_join failed!\n");
1348 cancel_delayed_work_sync(&priv->join_timeout);
1349 cw1200_update_listening(priv, priv->listening);
1350 /* Tx lock still held, unjoin will clear it. */
1351 if (queue_work(priv->workqueue, &priv->unjoin_work) <= 0)
1352 wsm_unlock_tx(priv);
1353 } else {
1354 if (!(join.flags & WSM_JOIN_FLAGS_FORCE_WITH_COMPLETE_IND))
1355 cw1200_join_complete(priv); /* Will clear tx_lock */
1356
1357 /* Upload keys */
1358 cw1200_upload_keys(priv);
1359
1360 /* Due to beacon filtering it is possible that the
1361 * AP's beacon is not known for the mac80211 stack.
1362 * Disable filtering temporary to make sure the stack
1363 * receives at least one
1364 */
1365 priv->disable_beacon_filter = true;
1366 }
1367 cw1200_update_filtering(priv);
1368
1369 done_put:
1370 mutex_unlock(&priv->conf_mutex);
1371 if (bss)
1372 cfg80211_put_bss(priv->hw->wiphy, bss);
1373 }
1374
cw1200_join_timeout(struct work_struct * work)1375 void cw1200_join_timeout(struct work_struct *work)
1376 {
1377 struct cw1200_common *priv =
1378 container_of(work, struct cw1200_common, join_timeout.work);
1379 pr_debug("[WSM] Join timed out.\n");
1380 wsm_lock_tx(priv);
1381 if (queue_work(priv->workqueue, &priv->unjoin_work) <= 0)
1382 wsm_unlock_tx(priv);
1383 }
1384
cw1200_do_unjoin(struct cw1200_common * priv)1385 static void cw1200_do_unjoin(struct cw1200_common *priv)
1386 {
1387 struct wsm_reset reset = {
1388 .reset_statistics = true,
1389 };
1390
1391 cancel_delayed_work_sync(&priv->join_timeout);
1392
1393 mutex_lock(&priv->conf_mutex);
1394 priv->join_pending = false;
1395
1396 if (atomic_read(&priv->scan.in_progress)) {
1397 if (priv->delayed_unjoin)
1398 wiphy_dbg(priv->hw->wiphy, "Delayed unjoin is already scheduled.\n");
1399 else
1400 priv->delayed_unjoin = true;
1401 goto done;
1402 }
1403
1404 priv->delayed_link_loss = false;
1405
1406 if (!priv->join_status)
1407 goto done;
1408
1409 if (priv->join_status == CW1200_JOIN_STATUS_AP)
1410 goto done;
1411
1412 cancel_work_sync(&priv->update_filtering_work);
1413 cancel_work_sync(&priv->set_beacon_wakeup_period_work);
1414 priv->join_status = CW1200_JOIN_STATUS_PASSIVE;
1415
1416 /* Unjoin is a reset. */
1417 wsm_flush_tx(priv);
1418 wsm_keep_alive_period(priv, 0);
1419 wsm_reset(priv, &reset);
1420 wsm_set_output_power(priv, priv->output_power * 10);
1421 priv->join_dtim_period = 0;
1422 cw1200_setup_mac(priv);
1423 cw1200_free_event_queue(priv);
1424 cancel_work_sync(&priv->event_handler);
1425 cw1200_update_listening(priv, priv->listening);
1426 cw1200_cqm_bssloss_sm(priv, 0, 0, 0);
1427
1428 /* Disable Block ACKs */
1429 wsm_set_block_ack_policy(priv, 0, 0);
1430
1431 priv->disable_beacon_filter = false;
1432 cw1200_update_filtering(priv);
1433 memset(&priv->association_mode, 0,
1434 sizeof(priv->association_mode));
1435 memset(&priv->bss_params, 0, sizeof(priv->bss_params));
1436 priv->setbssparams_done = false;
1437 memset(&priv->firmware_ps_mode, 0,
1438 sizeof(priv->firmware_ps_mode));
1439
1440 pr_debug("[STA] Unjoin completed.\n");
1441
1442 done:
1443 mutex_unlock(&priv->conf_mutex);
1444 }
1445
cw1200_unjoin_work(struct work_struct * work)1446 void cw1200_unjoin_work(struct work_struct *work)
1447 {
1448 struct cw1200_common *priv =
1449 container_of(work, struct cw1200_common, unjoin_work);
1450
1451 cw1200_do_unjoin(priv);
1452
1453 /* Tell the stack we're dead */
1454 ieee80211_connection_loss(priv->vif);
1455
1456 wsm_unlock_tx(priv);
1457 }
1458
cw1200_enable_listening(struct cw1200_common * priv)1459 int cw1200_enable_listening(struct cw1200_common *priv)
1460 {
1461 struct wsm_start start = {
1462 .mode = WSM_START_MODE_P2P_DEV,
1463 .band = WSM_PHY_BAND_2_4G,
1464 .beacon_interval = 100,
1465 .dtim_period = 1,
1466 .probe_delay = 0,
1467 .basic_rate_set = 0x0F,
1468 };
1469
1470 if (priv->channel) {
1471 start.band = priv->channel->band == IEEE80211_BAND_5GHZ ?
1472 WSM_PHY_BAND_5G : WSM_PHY_BAND_2_4G;
1473 start.channel_number = priv->channel->hw_value;
1474 } else {
1475 start.band = WSM_PHY_BAND_2_4G;
1476 start.channel_number = 1;
1477 }
1478
1479 return wsm_start(priv, &start);
1480 }
1481
cw1200_disable_listening(struct cw1200_common * priv)1482 int cw1200_disable_listening(struct cw1200_common *priv)
1483 {
1484 int ret;
1485 struct wsm_reset reset = {
1486 .reset_statistics = true,
1487 };
1488 ret = wsm_reset(priv, &reset);
1489 return ret;
1490 }
1491
cw1200_update_listening(struct cw1200_common * priv,bool enabled)1492 void cw1200_update_listening(struct cw1200_common *priv, bool enabled)
1493 {
1494 if (enabled) {
1495 if (priv->join_status == CW1200_JOIN_STATUS_PASSIVE) {
1496 if (!cw1200_enable_listening(priv))
1497 priv->join_status = CW1200_JOIN_STATUS_MONITOR;
1498 wsm_set_probe_responder(priv, true);
1499 }
1500 } else {
1501 if (priv->join_status == CW1200_JOIN_STATUS_MONITOR) {
1502 if (!cw1200_disable_listening(priv))
1503 priv->join_status = CW1200_JOIN_STATUS_PASSIVE;
1504 wsm_set_probe_responder(priv, false);
1505 }
1506 }
1507 }
1508
cw1200_set_uapsd_param(struct cw1200_common * priv,const struct wsm_edca_params * arg)1509 int cw1200_set_uapsd_param(struct cw1200_common *priv,
1510 const struct wsm_edca_params *arg)
1511 {
1512 int ret;
1513 u16 uapsd_flags = 0;
1514
1515 /* Here's the mapping AC [queue, bit]
1516 * VO [0,3], VI [1, 2], BE [2, 1], BK [3, 0]
1517 */
1518
1519 if (arg->uapsd_enable[0])
1520 uapsd_flags |= 1 << 3;
1521
1522 if (arg->uapsd_enable[1])
1523 uapsd_flags |= 1 << 2;
1524
1525 if (arg->uapsd_enable[2])
1526 uapsd_flags |= 1 << 1;
1527
1528 if (arg->uapsd_enable[3])
1529 uapsd_flags |= 1;
1530
1531 /* Currently pseudo U-APSD operation is not supported, so setting
1532 * MinAutoTriggerInterval, MaxAutoTriggerInterval and
1533 * AutoTriggerStep to 0
1534 */
1535
1536 priv->uapsd_info.uapsd_flags = cpu_to_le16(uapsd_flags);
1537 priv->uapsd_info.min_auto_trigger_interval = 0;
1538 priv->uapsd_info.max_auto_trigger_interval = 0;
1539 priv->uapsd_info.auto_trigger_step = 0;
1540
1541 ret = wsm_set_uapsd_info(priv, &priv->uapsd_info);
1542 return ret;
1543 }
1544
1545 /* ******************************************************************** */
1546 /* AP API */
1547
cw1200_sta_add(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_sta * sta)1548 int cw1200_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
1549 struct ieee80211_sta *sta)
1550 {
1551 struct cw1200_common *priv = hw->priv;
1552 struct cw1200_sta_priv *sta_priv =
1553 (struct cw1200_sta_priv *)&sta->drv_priv;
1554 struct cw1200_link_entry *entry;
1555 struct sk_buff *skb;
1556
1557 if (priv->mode != NL80211_IFTYPE_AP)
1558 return 0;
1559
1560 sta_priv->link_id = cw1200_find_link_id(priv, sta->addr);
1561 if (WARN_ON(!sta_priv->link_id)) {
1562 wiphy_info(priv->hw->wiphy,
1563 "[AP] No more link IDs available.\n");
1564 return -ENOENT;
1565 }
1566
1567 entry = &priv->link_id_db[sta_priv->link_id - 1];
1568 spin_lock_bh(&priv->ps_state_lock);
1569 if ((sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK) ==
1570 IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
1571 priv->sta_asleep_mask |= BIT(sta_priv->link_id);
1572 entry->status = CW1200_LINK_HARD;
1573 while ((skb = skb_dequeue(&entry->rx_queue)))
1574 ieee80211_rx_irqsafe(priv->hw, skb);
1575 spin_unlock_bh(&priv->ps_state_lock);
1576 return 0;
1577 }
1578
cw1200_sta_remove(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_sta * sta)1579 int cw1200_sta_remove(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
1580 struct ieee80211_sta *sta)
1581 {
1582 struct cw1200_common *priv = hw->priv;
1583 struct cw1200_sta_priv *sta_priv =
1584 (struct cw1200_sta_priv *)&sta->drv_priv;
1585 struct cw1200_link_entry *entry;
1586
1587 if (priv->mode != NL80211_IFTYPE_AP || !sta_priv->link_id)
1588 return 0;
1589
1590 entry = &priv->link_id_db[sta_priv->link_id - 1];
1591 spin_lock_bh(&priv->ps_state_lock);
1592 entry->status = CW1200_LINK_RESERVE;
1593 entry->timestamp = jiffies;
1594 wsm_lock_tx_async(priv);
1595 if (queue_work(priv->workqueue, &priv->link_id_work) <= 0)
1596 wsm_unlock_tx(priv);
1597 spin_unlock_bh(&priv->ps_state_lock);
1598 flush_workqueue(priv->workqueue);
1599 return 0;
1600 }
1601
__cw1200_sta_notify(struct ieee80211_hw * dev,struct ieee80211_vif * vif,enum sta_notify_cmd notify_cmd,int link_id)1602 static void __cw1200_sta_notify(struct ieee80211_hw *dev,
1603 struct ieee80211_vif *vif,
1604 enum sta_notify_cmd notify_cmd,
1605 int link_id)
1606 {
1607 struct cw1200_common *priv = dev->priv;
1608 u32 bit, prev;
1609
1610 /* Zero link id means "for all link IDs" */
1611 if (link_id)
1612 bit = BIT(link_id);
1613 else if (WARN_ON_ONCE(notify_cmd != STA_NOTIFY_AWAKE))
1614 bit = 0;
1615 else
1616 bit = priv->link_id_map;
1617 prev = priv->sta_asleep_mask & bit;
1618
1619 switch (notify_cmd) {
1620 case STA_NOTIFY_SLEEP:
1621 if (!prev) {
1622 if (priv->buffered_multicasts &&
1623 !priv->sta_asleep_mask)
1624 queue_work(priv->workqueue,
1625 &priv->multicast_start_work);
1626 priv->sta_asleep_mask |= bit;
1627 }
1628 break;
1629 case STA_NOTIFY_AWAKE:
1630 if (prev) {
1631 priv->sta_asleep_mask &= ~bit;
1632 priv->pspoll_mask &= ~bit;
1633 if (priv->tx_multicast && link_id &&
1634 !priv->sta_asleep_mask)
1635 queue_work(priv->workqueue,
1636 &priv->multicast_stop_work);
1637 cw1200_bh_wakeup(priv);
1638 }
1639 break;
1640 }
1641 }
1642
cw1200_sta_notify(struct ieee80211_hw * dev,struct ieee80211_vif * vif,enum sta_notify_cmd notify_cmd,struct ieee80211_sta * sta)1643 void cw1200_sta_notify(struct ieee80211_hw *dev,
1644 struct ieee80211_vif *vif,
1645 enum sta_notify_cmd notify_cmd,
1646 struct ieee80211_sta *sta)
1647 {
1648 struct cw1200_common *priv = dev->priv;
1649 struct cw1200_sta_priv *sta_priv =
1650 (struct cw1200_sta_priv *)&sta->drv_priv;
1651
1652 spin_lock_bh(&priv->ps_state_lock);
1653 __cw1200_sta_notify(dev, vif, notify_cmd, sta_priv->link_id);
1654 spin_unlock_bh(&priv->ps_state_lock);
1655 }
1656
cw1200_ps_notify(struct cw1200_common * priv,int link_id,bool ps)1657 static void cw1200_ps_notify(struct cw1200_common *priv,
1658 int link_id, bool ps)
1659 {
1660 if (link_id > CW1200_MAX_STA_IN_AP_MODE)
1661 return;
1662
1663 pr_debug("%s for LinkId: %d. STAs asleep: %.8X\n",
1664 ps ? "Stop" : "Start",
1665 link_id, priv->sta_asleep_mask);
1666
1667 __cw1200_sta_notify(priv->hw, priv->vif,
1668 ps ? STA_NOTIFY_SLEEP : STA_NOTIFY_AWAKE, link_id);
1669 }
1670
cw1200_set_tim_impl(struct cw1200_common * priv,bool aid0_bit_set)1671 static int cw1200_set_tim_impl(struct cw1200_common *priv, bool aid0_bit_set)
1672 {
1673 struct sk_buff *skb;
1674 struct wsm_update_ie update_ie = {
1675 .what = WSM_UPDATE_IE_BEACON,
1676 .count = 1,
1677 };
1678 u16 tim_offset, tim_length;
1679
1680 pr_debug("[AP] mcast: %s.\n", aid0_bit_set ? "ena" : "dis");
1681
1682 skb = ieee80211_beacon_get_tim(priv->hw, priv->vif,
1683 &tim_offset, &tim_length);
1684 if (!skb) {
1685 if (!__cw1200_flush(priv, true))
1686 wsm_unlock_tx(priv);
1687 return -ENOENT;
1688 }
1689
1690 if (tim_offset && tim_length >= 6) {
1691 /* Ignore DTIM count from mac80211:
1692 * firmware handles DTIM internally.
1693 */
1694 skb->data[tim_offset + 2] = 0;
1695
1696 /* Set/reset aid0 bit */
1697 if (aid0_bit_set)
1698 skb->data[tim_offset + 4] |= 1;
1699 else
1700 skb->data[tim_offset + 4] &= ~1;
1701 }
1702
1703 update_ie.ies = &skb->data[tim_offset];
1704 update_ie.length = tim_length;
1705 wsm_update_ie(priv, &update_ie);
1706
1707 dev_kfree_skb(skb);
1708
1709 return 0;
1710 }
1711
cw1200_set_tim_work(struct work_struct * work)1712 void cw1200_set_tim_work(struct work_struct *work)
1713 {
1714 struct cw1200_common *priv =
1715 container_of(work, struct cw1200_common, set_tim_work);
1716 (void)cw1200_set_tim_impl(priv, priv->aid0_bit_set);
1717 }
1718
cw1200_set_tim(struct ieee80211_hw * dev,struct ieee80211_sta * sta,bool set)1719 int cw1200_set_tim(struct ieee80211_hw *dev, struct ieee80211_sta *sta,
1720 bool set)
1721 {
1722 struct cw1200_common *priv = dev->priv;
1723 queue_work(priv->workqueue, &priv->set_tim_work);
1724 return 0;
1725 }
1726
cw1200_set_cts_work(struct work_struct * work)1727 void cw1200_set_cts_work(struct work_struct *work)
1728 {
1729 struct cw1200_common *priv =
1730 container_of(work, struct cw1200_common, set_cts_work);
1731
1732 u8 erp_ie[3] = {WLAN_EID_ERP_INFO, 0x1, 0};
1733 struct wsm_update_ie update_ie = {
1734 .what = WSM_UPDATE_IE_BEACON,
1735 .count = 1,
1736 .ies = erp_ie,
1737 .length = 3,
1738 };
1739 u32 erp_info;
1740 __le32 use_cts_prot;
1741 mutex_lock(&priv->conf_mutex);
1742 erp_info = priv->erp_info;
1743 mutex_unlock(&priv->conf_mutex);
1744 use_cts_prot =
1745 erp_info & WLAN_ERP_USE_PROTECTION ?
1746 __cpu_to_le32(1) : 0;
1747
1748 erp_ie[ERP_INFO_BYTE_OFFSET] = erp_info;
1749
1750 pr_debug("[STA] ERP information 0x%x\n", erp_info);
1751
1752 wsm_write_mib(priv, WSM_MIB_ID_NON_ERP_PROTECTION,
1753 &use_cts_prot, sizeof(use_cts_prot));
1754 wsm_update_ie(priv, &update_ie);
1755
1756 return;
1757 }
1758
cw1200_set_btcoexinfo(struct cw1200_common * priv)1759 static int cw1200_set_btcoexinfo(struct cw1200_common *priv)
1760 {
1761 struct wsm_override_internal_txrate arg;
1762 int ret = 0;
1763
1764 if (priv->mode == NL80211_IFTYPE_STATION) {
1765 /* Plumb PSPOLL and NULL template */
1766 cw1200_upload_pspoll(priv);
1767 cw1200_upload_null(priv);
1768 cw1200_upload_qosnull(priv);
1769 } else {
1770 return 0;
1771 }
1772
1773 memset(&arg, 0, sizeof(struct wsm_override_internal_txrate));
1774
1775 if (!priv->vif->p2p) {
1776 /* STATION mode */
1777 if (priv->bss_params.operational_rate_set & ~0xF) {
1778 pr_debug("[STA] STA has ERP rates\n");
1779 /* G or BG mode */
1780 arg.internalTxRate = (__ffs(
1781 priv->bss_params.operational_rate_set & ~0xF));
1782 } else {
1783 pr_debug("[STA] STA has non ERP rates\n");
1784 /* B only mode */
1785 arg.internalTxRate = (__ffs(le32_to_cpu(priv->association_mode.basic_rate_set)));
1786 }
1787 arg.nonErpInternalTxRate = (__ffs(le32_to_cpu(priv->association_mode.basic_rate_set)));
1788 } else {
1789 /* P2P mode */
1790 arg.internalTxRate = (__ffs(priv->bss_params.operational_rate_set & ~0xF));
1791 arg.nonErpInternalTxRate = (__ffs(priv->bss_params.operational_rate_set & ~0xF));
1792 }
1793
1794 pr_debug("[STA] BTCOEX_INFO MODE %d, internalTxRate : %x, nonErpInternalTxRate: %x\n",
1795 priv->mode,
1796 arg.internalTxRate,
1797 arg.nonErpInternalTxRate);
1798
1799 ret = wsm_write_mib(priv, WSM_MIB_ID_OVERRIDE_INTERNAL_TX_RATE,
1800 &arg, sizeof(arg));
1801
1802 return ret;
1803 }
1804
cw1200_bss_info_changed(struct ieee80211_hw * dev,struct ieee80211_vif * vif,struct ieee80211_bss_conf * info,u32 changed)1805 void cw1200_bss_info_changed(struct ieee80211_hw *dev,
1806 struct ieee80211_vif *vif,
1807 struct ieee80211_bss_conf *info,
1808 u32 changed)
1809 {
1810 struct cw1200_common *priv = dev->priv;
1811 bool do_join = false;
1812
1813 mutex_lock(&priv->conf_mutex);
1814
1815 pr_debug("BSS CHANGED: %08x\n", changed);
1816
1817 /* TODO: BSS_CHANGED_QOS */
1818 /* TODO: BSS_CHANGED_TXPOWER */
1819
1820 if (changed & BSS_CHANGED_ARP_FILTER) {
1821 struct wsm_mib_arp_ipv4_filter filter = {0};
1822 int i;
1823
1824 pr_debug("[STA] BSS_CHANGED_ARP_FILTER cnt: %d\n",
1825 info->arp_addr_cnt);
1826
1827 /* Currently only one IP address is supported by firmware.
1828 * In case of more IPs arp filtering will be disabled.
1829 */
1830 if (info->arp_addr_cnt > 0 &&
1831 info->arp_addr_cnt <= WSM_MAX_ARP_IP_ADDRTABLE_ENTRIES) {
1832 for (i = 0; i < info->arp_addr_cnt; i++) {
1833 filter.ipv4addrs[i] = info->arp_addr_list[i];
1834 pr_debug("[STA] addr[%d]: 0x%X\n",
1835 i, filter.ipv4addrs[i]);
1836 }
1837 filter.enable = __cpu_to_le32(1);
1838 }
1839
1840 pr_debug("[STA] arp ip filter enable: %d\n",
1841 __le32_to_cpu(filter.enable));
1842
1843 wsm_set_arp_ipv4_filter(priv, &filter);
1844 }
1845
1846 if (changed &
1847 (BSS_CHANGED_BEACON |
1848 BSS_CHANGED_AP_PROBE_RESP |
1849 BSS_CHANGED_BSSID |
1850 BSS_CHANGED_SSID |
1851 BSS_CHANGED_IBSS)) {
1852 pr_debug("BSS_CHANGED_BEACON\n");
1853 priv->beacon_int = info->beacon_int;
1854 cw1200_update_beaconing(priv);
1855 cw1200_upload_beacon(priv);
1856 }
1857
1858 if (changed & BSS_CHANGED_BEACON_ENABLED) {
1859 pr_debug("BSS_CHANGED_BEACON_ENABLED (%d)\n", info->enable_beacon);
1860
1861 if (priv->enable_beacon != info->enable_beacon) {
1862 cw1200_enable_beaconing(priv, info->enable_beacon);
1863 priv->enable_beacon = info->enable_beacon;
1864 }
1865 }
1866
1867 if (changed & BSS_CHANGED_BEACON_INT) {
1868 pr_debug("CHANGED_BEACON_INT\n");
1869 if (info->ibss_joined)
1870 do_join = true;
1871 else if (priv->join_status == CW1200_JOIN_STATUS_AP)
1872 cw1200_update_beaconing(priv);
1873 }
1874
1875 /* assoc/disassoc, or maybe AID changed */
1876 if (changed & BSS_CHANGED_ASSOC) {
1877 wsm_lock_tx(priv);
1878 priv->wep_default_key_id = -1;
1879 wsm_unlock_tx(priv);
1880 }
1881
1882 if (changed & BSS_CHANGED_BSSID) {
1883 pr_debug("BSS_CHANGED_BSSID\n");
1884 do_join = true;
1885 }
1886
1887 if (changed &
1888 (BSS_CHANGED_ASSOC |
1889 BSS_CHANGED_BSSID |
1890 BSS_CHANGED_IBSS |
1891 BSS_CHANGED_BASIC_RATES |
1892 BSS_CHANGED_HT)) {
1893 pr_debug("BSS_CHANGED_ASSOC\n");
1894 if (info->assoc) {
1895 if (priv->join_status < CW1200_JOIN_STATUS_PRE_STA) {
1896 ieee80211_connection_loss(vif);
1897 mutex_unlock(&priv->conf_mutex);
1898 return;
1899 } else if (priv->join_status == CW1200_JOIN_STATUS_PRE_STA) {
1900 priv->join_status = CW1200_JOIN_STATUS_STA;
1901 }
1902 } else {
1903 do_join = true;
1904 }
1905
1906 if (info->assoc || info->ibss_joined) {
1907 struct ieee80211_sta *sta = NULL;
1908 __le32 htprot = 0;
1909
1910 if (info->dtim_period)
1911 priv->join_dtim_period = info->dtim_period;
1912 priv->beacon_int = info->beacon_int;
1913
1914 rcu_read_lock();
1915
1916 if (info->bssid && !info->ibss_joined)
1917 sta = ieee80211_find_sta(vif, info->bssid);
1918 if (sta) {
1919 priv->ht_info.ht_cap = sta->ht_cap;
1920 priv->bss_params.operational_rate_set =
1921 cw1200_rate_mask_to_wsm(priv,
1922 sta->supp_rates[priv->channel->band]);
1923 priv->ht_info.channel_type = cfg80211_get_chandef_type(&dev->conf.chandef);
1924 priv->ht_info.operation_mode = info->ht_operation_mode;
1925 } else {
1926 memset(&priv->ht_info, 0,
1927 sizeof(priv->ht_info));
1928 priv->bss_params.operational_rate_set = -1;
1929 }
1930 rcu_read_unlock();
1931
1932 /* Non Greenfield stations present */
1933 if (priv->ht_info.operation_mode &
1934 IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT)
1935 htprot |= cpu_to_le32(WSM_NON_GREENFIELD_STA_PRESENT);
1936
1937 /* Set HT protection method */
1938 htprot |= cpu_to_le32((priv->ht_info.operation_mode & IEEE80211_HT_OP_MODE_PROTECTION) << 2);
1939
1940 /* TODO:
1941 * STBC_param.dual_cts
1942 * STBC_param.LSIG_TXOP_FILL
1943 */
1944
1945 wsm_write_mib(priv, WSM_MIB_ID_SET_HT_PROTECTION,
1946 &htprot, sizeof(htprot));
1947
1948 priv->association_mode.greenfield =
1949 cw1200_ht_greenfield(&priv->ht_info);
1950 priv->association_mode.flags =
1951 WSM_ASSOCIATION_MODE_SNOOP_ASSOC_FRAMES |
1952 WSM_ASSOCIATION_MODE_USE_PREAMBLE_TYPE |
1953 WSM_ASSOCIATION_MODE_USE_HT_MODE |
1954 WSM_ASSOCIATION_MODE_USE_BASIC_RATE_SET |
1955 WSM_ASSOCIATION_MODE_USE_MPDU_START_SPACING;
1956 priv->association_mode.preamble =
1957 info->use_short_preamble ?
1958 WSM_JOIN_PREAMBLE_SHORT :
1959 WSM_JOIN_PREAMBLE_LONG;
1960 priv->association_mode.basic_rate_set = __cpu_to_le32(
1961 cw1200_rate_mask_to_wsm(priv,
1962 info->basic_rates));
1963 priv->association_mode.mpdu_start_spacing =
1964 cw1200_ht_ampdu_density(&priv->ht_info);
1965
1966 cw1200_cqm_bssloss_sm(priv, 0, 0, 0);
1967 cancel_work_sync(&priv->unjoin_work);
1968
1969 priv->bss_params.beacon_lost_count = priv->cqm_beacon_loss_count;
1970 priv->bss_params.aid = info->aid;
1971
1972 if (priv->join_dtim_period < 1)
1973 priv->join_dtim_period = 1;
1974
1975 pr_debug("[STA] DTIM %d, interval: %d\n",
1976 priv->join_dtim_period, priv->beacon_int);
1977 pr_debug("[STA] Preamble: %d, Greenfield: %d, Aid: %d, Rates: 0x%.8X, Basic: 0x%.8X\n",
1978 priv->association_mode.preamble,
1979 priv->association_mode.greenfield,
1980 priv->bss_params.aid,
1981 priv->bss_params.operational_rate_set,
1982 priv->association_mode.basic_rate_set);
1983 wsm_set_association_mode(priv, &priv->association_mode);
1984
1985 if (!info->ibss_joined) {
1986 wsm_keep_alive_period(priv, 30 /* sec */);
1987 wsm_set_bss_params(priv, &priv->bss_params);
1988 priv->setbssparams_done = true;
1989 cw1200_set_beacon_wakeup_period_work(&priv->set_beacon_wakeup_period_work);
1990 cw1200_set_pm(priv, &priv->powersave_mode);
1991 }
1992 if (priv->vif->p2p) {
1993 pr_debug("[STA] Setting p2p powersave configuration.\n");
1994 wsm_set_p2p_ps_modeinfo(priv,
1995 &priv->p2p_ps_modeinfo);
1996 }
1997 if (priv->bt_present)
1998 cw1200_set_btcoexinfo(priv);
1999 } else {
2000 memset(&priv->association_mode, 0,
2001 sizeof(priv->association_mode));
2002 memset(&priv->bss_params, 0, sizeof(priv->bss_params));
2003 }
2004 }
2005
2006 /* ERP Protection */
2007 if (changed & (BSS_CHANGED_ASSOC |
2008 BSS_CHANGED_ERP_CTS_PROT |
2009 BSS_CHANGED_ERP_PREAMBLE)) {
2010 u32 prev_erp_info = priv->erp_info;
2011 if (info->use_cts_prot)
2012 priv->erp_info |= WLAN_ERP_USE_PROTECTION;
2013 else if (!(prev_erp_info & WLAN_ERP_NON_ERP_PRESENT))
2014 priv->erp_info &= ~WLAN_ERP_USE_PROTECTION;
2015
2016 if (info->use_short_preamble)
2017 priv->erp_info |= WLAN_ERP_BARKER_PREAMBLE;
2018 else
2019 priv->erp_info &= ~WLAN_ERP_BARKER_PREAMBLE;
2020
2021 pr_debug("[STA] ERP Protection: %x\n", priv->erp_info);
2022
2023 if (prev_erp_info != priv->erp_info)
2024 queue_work(priv->workqueue, &priv->set_cts_work);
2025 }
2026
2027 /* ERP Slottime */
2028 if (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_ERP_SLOT)) {
2029 __le32 slot_time = info->use_short_slot ?
2030 __cpu_to_le32(9) : __cpu_to_le32(20);
2031 pr_debug("[STA] Slot time: %d us.\n",
2032 __le32_to_cpu(slot_time));
2033 wsm_write_mib(priv, WSM_MIB_ID_DOT11_SLOT_TIME,
2034 &slot_time, sizeof(slot_time));
2035 }
2036
2037 if (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_CQM)) {
2038 struct wsm_rcpi_rssi_threshold threshold = {
2039 .rollingAverageCount = 8,
2040 };
2041 pr_debug("[CQM] RSSI threshold subscribe: %d +- %d\n",
2042 info->cqm_rssi_thold, info->cqm_rssi_hyst);
2043 priv->cqm_rssi_thold = info->cqm_rssi_thold;
2044 priv->cqm_rssi_hyst = info->cqm_rssi_hyst;
2045
2046 if (info->cqm_rssi_thold || info->cqm_rssi_hyst) {
2047 /* RSSI subscription enabled */
2048 /* TODO: It's not a correct way of setting threshold.
2049 * Upper and lower must be set equal here and adjusted
2050 * in callback. However current implementation is much
2051 * more relaible and stable.
2052 */
2053
2054 /* RSSI: signed Q8.0, RCPI: unsigned Q7.1
2055 * RSSI = RCPI / 2 - 110
2056 */
2057 if (priv->cqm_use_rssi) {
2058 threshold.upperThreshold =
2059 info->cqm_rssi_thold + info->cqm_rssi_hyst;
2060 threshold.lowerThreshold =
2061 info->cqm_rssi_thold;
2062 threshold.rssiRcpiMode |= WSM_RCPI_RSSI_USE_RSSI;
2063 } else {
2064 threshold.upperThreshold = (info->cqm_rssi_thold + info->cqm_rssi_hyst + 110) * 2;
2065 threshold.lowerThreshold = (info->cqm_rssi_thold + 110) * 2;
2066 }
2067 threshold.rssiRcpiMode |= WSM_RCPI_RSSI_THRESHOLD_ENABLE;
2068 } else {
2069 /* There is a bug in FW, see sta.c. We have to enable
2070 * dummy subscription to get correct RSSI values.
2071 */
2072 threshold.rssiRcpiMode |=
2073 WSM_RCPI_RSSI_THRESHOLD_ENABLE |
2074 WSM_RCPI_RSSI_DONT_USE_UPPER |
2075 WSM_RCPI_RSSI_DONT_USE_LOWER;
2076 if (priv->cqm_use_rssi)
2077 threshold.rssiRcpiMode |= WSM_RCPI_RSSI_USE_RSSI;
2078 }
2079 wsm_set_rcpi_rssi_threshold(priv, &threshold);
2080 }
2081 mutex_unlock(&priv->conf_mutex);
2082
2083 if (do_join) {
2084 wsm_lock_tx(priv);
2085 cw1200_do_join(priv); /* Will unlock it for us */
2086 }
2087 }
2088
cw1200_multicast_start_work(struct work_struct * work)2089 void cw1200_multicast_start_work(struct work_struct *work)
2090 {
2091 struct cw1200_common *priv =
2092 container_of(work, struct cw1200_common, multicast_start_work);
2093 long tmo = priv->join_dtim_period *
2094 (priv->beacon_int + 20) * HZ / 1024;
2095
2096 cancel_work_sync(&priv->multicast_stop_work);
2097
2098 if (!priv->aid0_bit_set) {
2099 wsm_lock_tx(priv);
2100 cw1200_set_tim_impl(priv, true);
2101 priv->aid0_bit_set = true;
2102 mod_timer(&priv->mcast_timeout, jiffies + tmo);
2103 wsm_unlock_tx(priv);
2104 }
2105 }
2106
cw1200_multicast_stop_work(struct work_struct * work)2107 void cw1200_multicast_stop_work(struct work_struct *work)
2108 {
2109 struct cw1200_common *priv =
2110 container_of(work, struct cw1200_common, multicast_stop_work);
2111
2112 if (priv->aid0_bit_set) {
2113 del_timer_sync(&priv->mcast_timeout);
2114 wsm_lock_tx(priv);
2115 priv->aid0_bit_set = false;
2116 cw1200_set_tim_impl(priv, false);
2117 wsm_unlock_tx(priv);
2118 }
2119 }
2120
cw1200_mcast_timeout(unsigned long arg)2121 void cw1200_mcast_timeout(unsigned long arg)
2122 {
2123 struct cw1200_common *priv =
2124 (struct cw1200_common *)arg;
2125
2126 wiphy_warn(priv->hw->wiphy,
2127 "Multicast delivery timeout.\n");
2128 spin_lock_bh(&priv->ps_state_lock);
2129 priv->tx_multicast = priv->aid0_bit_set &&
2130 priv->buffered_multicasts;
2131 if (priv->tx_multicast)
2132 cw1200_bh_wakeup(priv);
2133 spin_unlock_bh(&priv->ps_state_lock);
2134 }
2135
cw1200_ampdu_action(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_ampdu_params * params)2136 int cw1200_ampdu_action(struct ieee80211_hw *hw,
2137 struct ieee80211_vif *vif,
2138 struct ieee80211_ampdu_params *params)
2139 {
2140 /* Aggregation is implemented fully in firmware,
2141 * including block ack negotiation. Do not allow
2142 * mac80211 stack to do anything: it interferes with
2143 * the firmware.
2144 */
2145
2146 /* Note that we still need this function stubbed. */
2147 return -ENOTSUPP;
2148 }
2149
2150 /* ******************************************************************** */
2151 /* WSM callback */
cw1200_suspend_resume(struct cw1200_common * priv,struct wsm_suspend_resume * arg)2152 void cw1200_suspend_resume(struct cw1200_common *priv,
2153 struct wsm_suspend_resume *arg)
2154 {
2155 pr_debug("[AP] %s: %s\n",
2156 arg->stop ? "stop" : "start",
2157 arg->multicast ? "broadcast" : "unicast");
2158
2159 if (arg->multicast) {
2160 bool cancel_tmo = false;
2161 spin_lock_bh(&priv->ps_state_lock);
2162 if (arg->stop) {
2163 priv->tx_multicast = false;
2164 } else {
2165 /* Firmware sends this indication every DTIM if there
2166 * is a STA in powersave connected. There is no reason
2167 * to suspend, following wakeup will consume much more
2168 * power than it could be saved.
2169 */
2170 cw1200_pm_stay_awake(&priv->pm_state,
2171 priv->join_dtim_period *
2172 (priv->beacon_int + 20) * HZ / 1024);
2173 priv->tx_multicast = (priv->aid0_bit_set &&
2174 priv->buffered_multicasts);
2175 if (priv->tx_multicast) {
2176 cancel_tmo = true;
2177 cw1200_bh_wakeup(priv);
2178 }
2179 }
2180 spin_unlock_bh(&priv->ps_state_lock);
2181 if (cancel_tmo)
2182 del_timer_sync(&priv->mcast_timeout);
2183 } else {
2184 spin_lock_bh(&priv->ps_state_lock);
2185 cw1200_ps_notify(priv, arg->link_id, arg->stop);
2186 spin_unlock_bh(&priv->ps_state_lock);
2187 if (!arg->stop)
2188 cw1200_bh_wakeup(priv);
2189 }
2190 return;
2191 }
2192
2193 /* ******************************************************************** */
2194 /* AP privates */
2195
cw1200_upload_beacon(struct cw1200_common * priv)2196 static int cw1200_upload_beacon(struct cw1200_common *priv)
2197 {
2198 int ret = 0;
2199 struct ieee80211_mgmt *mgmt;
2200 struct wsm_template_frame frame = {
2201 .frame_type = WSM_FRAME_TYPE_BEACON,
2202 };
2203
2204 u16 tim_offset;
2205 u16 tim_len;
2206
2207 if (priv->mode == NL80211_IFTYPE_STATION ||
2208 priv->mode == NL80211_IFTYPE_MONITOR ||
2209 priv->mode == NL80211_IFTYPE_UNSPECIFIED)
2210 goto done;
2211
2212 if (priv->vif->p2p)
2213 frame.rate = WSM_TRANSMIT_RATE_6;
2214
2215 frame.skb = ieee80211_beacon_get_tim(priv->hw, priv->vif,
2216 &tim_offset, &tim_len);
2217 if (!frame.skb)
2218 return -ENOMEM;
2219
2220 ret = wsm_set_template_frame(priv, &frame);
2221
2222 if (ret)
2223 goto done;
2224
2225 /* TODO: Distill probe resp; remove TIM
2226 * and any other beacon-specific IEs
2227 */
2228 mgmt = (void *)frame.skb->data;
2229 mgmt->frame_control =
2230 __cpu_to_le16(IEEE80211_FTYPE_MGMT |
2231 IEEE80211_STYPE_PROBE_RESP);
2232
2233 frame.frame_type = WSM_FRAME_TYPE_PROBE_RESPONSE;
2234 if (priv->vif->p2p) {
2235 ret = wsm_set_probe_responder(priv, true);
2236 } else {
2237 ret = wsm_set_template_frame(priv, &frame);
2238 wsm_set_probe_responder(priv, false);
2239 }
2240
2241 done:
2242 dev_kfree_skb(frame.skb);
2243
2244 return ret;
2245 }
2246
cw1200_upload_pspoll(struct cw1200_common * priv)2247 static int cw1200_upload_pspoll(struct cw1200_common *priv)
2248 {
2249 int ret = 0;
2250 struct wsm_template_frame frame = {
2251 .frame_type = WSM_FRAME_TYPE_PS_POLL,
2252 .rate = 0xFF,
2253 };
2254
2255
2256 frame.skb = ieee80211_pspoll_get(priv->hw, priv->vif);
2257 if (!frame.skb)
2258 return -ENOMEM;
2259
2260 ret = wsm_set_template_frame(priv, &frame);
2261
2262 dev_kfree_skb(frame.skb);
2263
2264 return ret;
2265 }
2266
cw1200_upload_null(struct cw1200_common * priv)2267 static int cw1200_upload_null(struct cw1200_common *priv)
2268 {
2269 int ret = 0;
2270 struct wsm_template_frame frame = {
2271 .frame_type = WSM_FRAME_TYPE_NULL,
2272 .rate = 0xFF,
2273 };
2274
2275 frame.skb = ieee80211_nullfunc_get(priv->hw, priv->vif);
2276 if (!frame.skb)
2277 return -ENOMEM;
2278
2279 ret = wsm_set_template_frame(priv, &frame);
2280
2281 dev_kfree_skb(frame.skb);
2282
2283 return ret;
2284 }
2285
cw1200_upload_qosnull(struct cw1200_common * priv)2286 static int cw1200_upload_qosnull(struct cw1200_common *priv)
2287 {
2288 /* TODO: This needs to be implemented
2289
2290 struct wsm_template_frame frame = {
2291 .frame_type = WSM_FRAME_TYPE_QOS_NULL,
2292 .rate = 0xFF,
2293 };
2294
2295 frame.skb = ieee80211_qosnullfunc_get(priv->hw, priv->vif);
2296 if (!frame.skb)
2297 return -ENOMEM;
2298
2299 ret = wsm_set_template_frame(priv, &frame);
2300
2301 dev_kfree_skb(frame.skb);
2302
2303 */
2304 return 0;
2305 }
2306
cw1200_enable_beaconing(struct cw1200_common * priv,bool enable)2307 static int cw1200_enable_beaconing(struct cw1200_common *priv,
2308 bool enable)
2309 {
2310 struct wsm_beacon_transmit transmit = {
2311 .enable_beaconing = enable,
2312 };
2313
2314 return wsm_beacon_transmit(priv, &transmit);
2315 }
2316
cw1200_start_ap(struct cw1200_common * priv)2317 static int cw1200_start_ap(struct cw1200_common *priv)
2318 {
2319 int ret;
2320 struct ieee80211_bss_conf *conf = &priv->vif->bss_conf;
2321 struct wsm_start start = {
2322 .mode = priv->vif->p2p ?
2323 WSM_START_MODE_P2P_GO : WSM_START_MODE_AP,
2324 .band = (priv->channel->band == IEEE80211_BAND_5GHZ) ?
2325 WSM_PHY_BAND_5G : WSM_PHY_BAND_2_4G,
2326 .channel_number = priv->channel->hw_value,
2327 .beacon_interval = conf->beacon_int,
2328 .dtim_period = conf->dtim_period,
2329 .preamble = conf->use_short_preamble ?
2330 WSM_JOIN_PREAMBLE_SHORT :
2331 WSM_JOIN_PREAMBLE_LONG,
2332 .probe_delay = 100,
2333 .basic_rate_set = cw1200_rate_mask_to_wsm(priv,
2334 conf->basic_rates),
2335 };
2336 struct wsm_operational_mode mode = {
2337 .power_mode = cw1200_power_mode,
2338 .disable_more_flag_usage = true,
2339 };
2340
2341 memset(start.ssid, 0, sizeof(start.ssid));
2342 if (!conf->hidden_ssid) {
2343 start.ssid_len = conf->ssid_len;
2344 memcpy(start.ssid, conf->ssid, start.ssid_len);
2345 }
2346
2347 priv->beacon_int = conf->beacon_int;
2348 priv->join_dtim_period = conf->dtim_period;
2349
2350 memset(&priv->link_id_db, 0, sizeof(priv->link_id_db));
2351
2352 pr_debug("[AP] ch: %d(%d), bcn: %d(%d), brt: 0x%.8X, ssid: %.*s.\n",
2353 start.channel_number, start.band,
2354 start.beacon_interval, start.dtim_period,
2355 start.basic_rate_set,
2356 start.ssid_len, start.ssid);
2357 ret = wsm_start(priv, &start);
2358 if (!ret)
2359 ret = cw1200_upload_keys(priv);
2360 if (!ret && priv->vif->p2p) {
2361 pr_debug("[AP] Setting p2p powersave configuration.\n");
2362 wsm_set_p2p_ps_modeinfo(priv, &priv->p2p_ps_modeinfo);
2363 }
2364 if (!ret) {
2365 wsm_set_block_ack_policy(priv, 0, 0);
2366 priv->join_status = CW1200_JOIN_STATUS_AP;
2367 cw1200_update_filtering(priv);
2368 }
2369 wsm_set_operational_mode(priv, &mode);
2370 return ret;
2371 }
2372
cw1200_update_beaconing(struct cw1200_common * priv)2373 static int cw1200_update_beaconing(struct cw1200_common *priv)
2374 {
2375 struct ieee80211_bss_conf *conf = &priv->vif->bss_conf;
2376 struct wsm_reset reset = {
2377 .link_id = 0,
2378 .reset_statistics = true,
2379 };
2380
2381 if (priv->mode == NL80211_IFTYPE_AP) {
2382 /* TODO: check if changed channel, band */
2383 if (priv->join_status != CW1200_JOIN_STATUS_AP ||
2384 priv->beacon_int != conf->beacon_int) {
2385 pr_debug("ap restarting\n");
2386 wsm_lock_tx(priv);
2387 if (priv->join_status != CW1200_JOIN_STATUS_PASSIVE)
2388 wsm_reset(priv, &reset);
2389 priv->join_status = CW1200_JOIN_STATUS_PASSIVE;
2390 cw1200_start_ap(priv);
2391 wsm_unlock_tx(priv);
2392 } else
2393 pr_debug("ap started join_status: %d\n",
2394 priv->join_status);
2395 }
2396 return 0;
2397 }
2398