1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Mac80211 STA API for ST-Ericsson CW1200 drivers
4 *
5 * Copyright (c) 2010, ST-Ericsson
6 * Author: Dmitry Tarnyagin <dmitry.tarnyagin@lockless.no>
7 */
8
9 #include <linux/vmalloc.h>
10 #include <linux/sched.h>
11 #include <linux/firmware.h>
12 #include <linux/module.h>
13 #include <linux/etherdevice.h>
14
15 #include "cw1200.h"
16 #include "sta.h"
17 #include "fwio.h"
18 #include "bh.h"
19 #include "debug.h"
20
21 #ifndef ERP_INFO_BYTE_OFFSET
22 #define ERP_INFO_BYTE_OFFSET 2
23 #endif
24
25 static void cw1200_do_join(struct cw1200_common *priv);
26 static void cw1200_do_unjoin(struct cw1200_common *priv);
27
28 static int cw1200_upload_beacon(struct cw1200_common *priv);
29 static int cw1200_upload_pspoll(struct cw1200_common *priv);
30 static int cw1200_upload_null(struct cw1200_common *priv);
31 static int cw1200_upload_qosnull(struct cw1200_common *priv);
32 static int cw1200_start_ap(struct cw1200_common *priv);
33 static int cw1200_update_beaconing(struct cw1200_common *priv);
34 static int cw1200_enable_beaconing(struct cw1200_common *priv,
35 bool enable);
36 static void __cw1200_sta_notify(struct ieee80211_hw *dev,
37 struct ieee80211_vif *vif,
38 enum sta_notify_cmd notify_cmd,
39 int link_id);
40 static int __cw1200_flush(struct cw1200_common *priv, bool drop);
41
__cw1200_free_event_queue(struct list_head * list)42 static inline void __cw1200_free_event_queue(struct list_head *list)
43 {
44 struct cw1200_wsm_event *event, *tmp;
45 list_for_each_entry_safe(event, tmp, list, link) {
46 list_del(&event->link);
47 kfree(event);
48 }
49 }
50
51 /* ******************************************************************** */
52 /* STA API */
53
cw1200_start(struct ieee80211_hw * dev)54 int cw1200_start(struct ieee80211_hw *dev)
55 {
56 struct cw1200_common *priv = dev->priv;
57 int ret = 0;
58
59 cw1200_pm_stay_awake(&priv->pm_state, HZ);
60
61 mutex_lock(&priv->conf_mutex);
62
63 /* default EDCA */
64 WSM_EDCA_SET(&priv->edca, 0, 0x0002, 0x0003, 0x0007, 47, 0xc8, false);
65 WSM_EDCA_SET(&priv->edca, 1, 0x0002, 0x0007, 0x000f, 94, 0xc8, false);
66 WSM_EDCA_SET(&priv->edca, 2, 0x0003, 0x000f, 0x03ff, 0, 0xc8, false);
67 WSM_EDCA_SET(&priv->edca, 3, 0x0007, 0x000f, 0x03ff, 0, 0xc8, false);
68 ret = wsm_set_edca_params(priv, &priv->edca);
69 if (ret)
70 goto out;
71
72 ret = cw1200_set_uapsd_param(priv, &priv->edca);
73 if (ret)
74 goto out;
75
76 priv->setbssparams_done = false;
77
78 memcpy(priv->mac_addr, dev->wiphy->perm_addr, ETH_ALEN);
79 priv->mode = NL80211_IFTYPE_MONITOR;
80 priv->wep_default_key_id = -1;
81
82 priv->cqm_beacon_loss_count = 10;
83
84 ret = cw1200_setup_mac(priv);
85 if (ret)
86 goto out;
87
88 out:
89 mutex_unlock(&priv->conf_mutex);
90 return ret;
91 }
92
cw1200_stop(struct ieee80211_hw * dev,bool suspend)93 void cw1200_stop(struct ieee80211_hw *dev, bool suspend)
94 {
95 struct cw1200_common *priv = dev->priv;
96 LIST_HEAD(list);
97 int i;
98
99 wsm_lock_tx(priv);
100
101 while (down_trylock(&priv->scan.lock)) {
102 /* Scan is in progress. Force it to stop. */
103 priv->scan.req = NULL;
104 schedule();
105 }
106 up(&priv->scan.lock);
107
108 cancel_delayed_work_sync(&priv->scan.probe_work);
109 cancel_delayed_work_sync(&priv->scan.timeout);
110 cancel_delayed_work_sync(&priv->clear_recent_scan_work);
111 cancel_delayed_work_sync(&priv->join_timeout);
112 cw1200_cqm_bssloss_sm(priv, 0, 0, 0);
113 cancel_work_sync(&priv->unjoin_work);
114 cancel_delayed_work_sync(&priv->link_id_gc_work);
115 flush_workqueue(priv->workqueue);
116 timer_delete_sync(&priv->mcast_timeout);
117 mutex_lock(&priv->conf_mutex);
118 priv->mode = NL80211_IFTYPE_UNSPECIFIED;
119 priv->listening = false;
120
121 spin_lock(&priv->event_queue_lock);
122 list_splice_init(&priv->event_queue, &list);
123 spin_unlock(&priv->event_queue_lock);
124 __cw1200_free_event_queue(&list);
125
126
127 priv->join_status = CW1200_JOIN_STATUS_PASSIVE;
128 priv->join_pending = false;
129
130 for (i = 0; i < 4; i++)
131 cw1200_queue_clear(&priv->tx_queue[i]);
132 mutex_unlock(&priv->conf_mutex);
133 tx_policy_clean(priv);
134
135 /* HACK! */
136 if (atomic_xchg(&priv->tx_lock, 1) != 1)
137 pr_debug("[STA] TX is force-unlocked due to stop request.\n");
138
139 wsm_unlock_tx(priv);
140 atomic_xchg(&priv->tx_lock, 0); /* for recovery to work */
141 }
142
143 static int cw1200_bssloss_mitigation = 1;
144 module_param(cw1200_bssloss_mitigation, int, 0644);
145 MODULE_PARM_DESC(cw1200_bssloss_mitigation, "BSS Loss mitigation. 0 == disabled, 1 == enabled (default)");
146
147
__cw1200_cqm_bssloss_sm(struct cw1200_common * priv,int init,int good,int bad)148 void __cw1200_cqm_bssloss_sm(struct cw1200_common *priv,
149 int init, int good, int bad)
150 {
151 int tx = 0;
152
153 priv->delayed_link_loss = 0;
154 cancel_work_sync(&priv->bss_params_work);
155
156 pr_debug("[STA] CQM BSSLOSS_SM: state: %d init %d good %d bad: %d txlock: %d uj: %d\n",
157 priv->bss_loss_state,
158 init, good, bad,
159 atomic_read(&priv->tx_lock),
160 priv->delayed_unjoin);
161
162 /* If we have a pending unjoin */
163 if (priv->delayed_unjoin)
164 return;
165
166 if (init) {
167 queue_delayed_work(priv->workqueue,
168 &priv->bss_loss_work,
169 HZ);
170 priv->bss_loss_state = 0;
171
172 /* Skip the confimration procedure in P2P case */
173 if (!priv->vif->p2p && !atomic_read(&priv->tx_lock))
174 tx = 1;
175 } else if (good) {
176 cancel_delayed_work_sync(&priv->bss_loss_work);
177 priv->bss_loss_state = 0;
178 queue_work(priv->workqueue, &priv->bss_params_work);
179 } else if (bad) {
180 /* XXX Should we just keep going until we time out? */
181 if (priv->bss_loss_state < 3)
182 tx = 1;
183 } else {
184 cancel_delayed_work_sync(&priv->bss_loss_work);
185 priv->bss_loss_state = 0;
186 }
187
188 /* Bypass mitigation if it's disabled */
189 if (!cw1200_bssloss_mitigation)
190 tx = 0;
191
192 /* Spit out a NULL packet to our AP if necessary */
193 if (tx) {
194 struct sk_buff *skb;
195
196 priv->bss_loss_state++;
197
198 skb = ieee80211_nullfunc_get(priv->hw, priv->vif, -1, false);
199 WARN_ON(!skb);
200 if (skb)
201 cw1200_tx(priv->hw, NULL, skb);
202 }
203 }
204
cw1200_add_interface(struct ieee80211_hw * dev,struct ieee80211_vif * vif)205 int cw1200_add_interface(struct ieee80211_hw *dev,
206 struct ieee80211_vif *vif)
207 {
208 int ret;
209 struct cw1200_common *priv = dev->priv;
210 /* __le32 auto_calibration_mode = __cpu_to_le32(1); */
211
212 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
213 IEEE80211_VIF_SUPPORTS_UAPSD |
214 IEEE80211_VIF_SUPPORTS_CQM_RSSI;
215
216 mutex_lock(&priv->conf_mutex);
217
218 if (priv->mode != NL80211_IFTYPE_MONITOR) {
219 mutex_unlock(&priv->conf_mutex);
220 return -EOPNOTSUPP;
221 }
222
223 switch (vif->type) {
224 case NL80211_IFTYPE_STATION:
225 case NL80211_IFTYPE_ADHOC:
226 case NL80211_IFTYPE_MESH_POINT:
227 case NL80211_IFTYPE_AP:
228 priv->mode = vif->type;
229 break;
230 default:
231 mutex_unlock(&priv->conf_mutex);
232 return -EOPNOTSUPP;
233 }
234
235 priv->vif = vif;
236 memcpy(priv->mac_addr, vif->addr, ETH_ALEN);
237 ret = cw1200_setup_mac(priv);
238 /* Enable auto-calibration */
239 /* Exception in subsequent channel switch; disabled.
240 * wsm_write_mib(priv, WSM_MIB_ID_SET_AUTO_CALIBRATION_MODE,
241 * &auto_calibration_mode, sizeof(auto_calibration_mode));
242 */
243
244 mutex_unlock(&priv->conf_mutex);
245 return ret;
246 }
247
cw1200_remove_interface(struct ieee80211_hw * dev,struct ieee80211_vif * vif)248 void cw1200_remove_interface(struct ieee80211_hw *dev,
249 struct ieee80211_vif *vif)
250 {
251 struct cw1200_common *priv = dev->priv;
252 struct wsm_reset reset = {
253 .reset_statistics = true,
254 };
255 int i;
256
257 mutex_lock(&priv->conf_mutex);
258 switch (priv->join_status) {
259 case CW1200_JOIN_STATUS_JOINING:
260 case CW1200_JOIN_STATUS_PRE_STA:
261 case CW1200_JOIN_STATUS_STA:
262 case CW1200_JOIN_STATUS_IBSS:
263 wsm_lock_tx(priv);
264 if (queue_work(priv->workqueue, &priv->unjoin_work) <= 0)
265 wsm_unlock_tx(priv);
266 break;
267 case CW1200_JOIN_STATUS_AP:
268 for (i = 0; priv->link_id_map; ++i) {
269 if (priv->link_id_map & BIT(i)) {
270 reset.link_id = i;
271 wsm_reset(priv, &reset);
272 priv->link_id_map &= ~BIT(i);
273 }
274 }
275 memset(priv->link_id_db, 0, sizeof(priv->link_id_db));
276 priv->sta_asleep_mask = 0;
277 priv->enable_beacon = false;
278 priv->tx_multicast = false;
279 priv->aid0_bit_set = false;
280 priv->buffered_multicasts = false;
281 priv->pspoll_mask = 0;
282 reset.link_id = 0;
283 wsm_reset(priv, &reset);
284 break;
285 case CW1200_JOIN_STATUS_MONITOR:
286 cw1200_update_listening(priv, false);
287 break;
288 default:
289 break;
290 }
291 priv->vif = NULL;
292 priv->mode = NL80211_IFTYPE_MONITOR;
293 eth_zero_addr(priv->mac_addr);
294 memset(&priv->p2p_ps_modeinfo, 0, sizeof(priv->p2p_ps_modeinfo));
295 cw1200_free_keys(priv);
296 cw1200_setup_mac(priv);
297 priv->listening = false;
298 priv->join_status = CW1200_JOIN_STATUS_PASSIVE;
299 if (!__cw1200_flush(priv, true))
300 wsm_unlock_tx(priv);
301
302 mutex_unlock(&priv->conf_mutex);
303 }
304
cw1200_change_interface(struct ieee80211_hw * dev,struct ieee80211_vif * vif,enum nl80211_iftype new_type,bool p2p)305 int cw1200_change_interface(struct ieee80211_hw *dev,
306 struct ieee80211_vif *vif,
307 enum nl80211_iftype new_type,
308 bool p2p)
309 {
310 int ret = 0;
311 pr_debug("change_interface new: %d (%d), old: %d (%d)\n", new_type,
312 p2p, vif->type, vif->p2p);
313
314 if (new_type != vif->type || vif->p2p != p2p) {
315 cw1200_remove_interface(dev, vif);
316 vif->type = new_type;
317 vif->p2p = p2p;
318 ret = cw1200_add_interface(dev, vif);
319 }
320
321 return ret;
322 }
323
cw1200_config(struct ieee80211_hw * dev,int radio_idx,u32 changed)324 int cw1200_config(struct ieee80211_hw *dev, int radio_idx, u32 changed)
325 {
326 int ret = 0;
327 struct cw1200_common *priv = dev->priv;
328 struct ieee80211_conf *conf = &dev->conf;
329
330 pr_debug("CONFIG CHANGED: %08x\n", changed);
331
332 down(&priv->scan.lock);
333 mutex_lock(&priv->conf_mutex);
334 /* TODO: IEEE80211_CONF_CHANGE_QOS */
335 /* TODO: IEEE80211_CONF_CHANGE_LISTEN_INTERVAL */
336
337 if (changed & IEEE80211_CONF_CHANGE_POWER) {
338 priv->output_power = conf->power_level;
339 pr_debug("[STA] TX power: %d\n", priv->output_power);
340 wsm_set_output_power(priv, priv->output_power * 10);
341 }
342
343 if ((changed & IEEE80211_CONF_CHANGE_CHANNEL) &&
344 (priv->channel != conf->chandef.chan)) {
345 struct ieee80211_channel *ch = conf->chandef.chan;
346 struct wsm_switch_channel channel = {
347 .channel_number = ch->hw_value,
348 };
349 pr_debug("[STA] Freq %d (wsm ch: %d).\n",
350 ch->center_freq, ch->hw_value);
351
352 /* __cw1200_flush() implicitly locks tx, if successful */
353 if (!__cw1200_flush(priv, false)) {
354 if (!wsm_switch_channel(priv, &channel)) {
355 ret = wait_event_timeout(priv->channel_switch_done,
356 !priv->channel_switch_in_progress,
357 3 * HZ);
358 if (ret) {
359 /* Already unlocks if successful */
360 priv->channel = ch;
361 ret = 0;
362 } else {
363 ret = -ETIMEDOUT;
364 }
365 } else {
366 /* Unlock if switch channel fails */
367 wsm_unlock_tx(priv);
368 }
369 }
370 }
371
372 if (changed & IEEE80211_CONF_CHANGE_PS) {
373 if (!(conf->flags & IEEE80211_CONF_PS))
374 priv->powersave_mode.mode = WSM_PSM_ACTIVE;
375 else if (conf->dynamic_ps_timeout <= 0)
376 priv->powersave_mode.mode = WSM_PSM_PS;
377 else
378 priv->powersave_mode.mode = WSM_PSM_FAST_PS;
379
380 /* Firmware requires that value for this 1-byte field must
381 * be specified in units of 500us. Values above the 128ms
382 * threshold are not supported.
383 */
384 if (conf->dynamic_ps_timeout >= 0x80)
385 priv->powersave_mode.fast_psm_idle_period = 0xFF;
386 else
387 priv->powersave_mode.fast_psm_idle_period =
388 conf->dynamic_ps_timeout << 1;
389
390 if (priv->join_status == CW1200_JOIN_STATUS_STA &&
391 priv->bss_params.aid)
392 cw1200_set_pm(priv, &priv->powersave_mode);
393 }
394
395 if (changed & IEEE80211_CONF_CHANGE_MONITOR) {
396 /* TBD: It looks like it's transparent
397 * there's a monitor interface present -- use this
398 * to determine for example whether to calculate
399 * timestamps for packets or not, do not use instead
400 * of filter flags!
401 */
402 }
403
404 if (changed & IEEE80211_CONF_CHANGE_IDLE) {
405 struct wsm_operational_mode mode = {
406 .power_mode = cw1200_power_mode,
407 .disable_more_flag_usage = true,
408 };
409
410 wsm_lock_tx(priv);
411 /* Disable p2p-dev mode forced by TX request */
412 if ((priv->join_status == CW1200_JOIN_STATUS_MONITOR) &&
413 (conf->flags & IEEE80211_CONF_IDLE) &&
414 !priv->listening) {
415 cw1200_disable_listening(priv);
416 priv->join_status = CW1200_JOIN_STATUS_PASSIVE;
417 }
418 wsm_set_operational_mode(priv, &mode);
419 wsm_unlock_tx(priv);
420 }
421
422 if (changed & IEEE80211_CONF_CHANGE_RETRY_LIMITS) {
423 pr_debug("[STA] Retry limits: %d (long), %d (short).\n",
424 conf->long_frame_max_tx_count,
425 conf->short_frame_max_tx_count);
426 spin_lock_bh(&priv->tx_policy_cache.lock);
427 priv->long_frame_max_tx_count = conf->long_frame_max_tx_count;
428 priv->short_frame_max_tx_count =
429 (conf->short_frame_max_tx_count < 0x0F) ?
430 conf->short_frame_max_tx_count : 0x0F;
431 priv->hw->max_rate_tries = priv->short_frame_max_tx_count;
432 spin_unlock_bh(&priv->tx_policy_cache.lock);
433 }
434 mutex_unlock(&priv->conf_mutex);
435 up(&priv->scan.lock);
436 return ret;
437 }
438
cw1200_update_filtering(struct cw1200_common * priv)439 void cw1200_update_filtering(struct cw1200_common *priv)
440 {
441 int ret;
442 bool bssid_filtering = !priv->rx_filter.bssid;
443 bool is_p2p = priv->vif && priv->vif->p2p;
444 bool is_sta = priv->vif && NL80211_IFTYPE_STATION == priv->vif->type;
445
446 static struct wsm_beacon_filter_control bf_ctrl;
447 static struct wsm_mib_beacon_filter_table bf_tbl = {
448 .entry[0].ie_id = WLAN_EID_VENDOR_SPECIFIC,
449 .entry[0].flags = WSM_BEACON_FILTER_IE_HAS_CHANGED |
450 WSM_BEACON_FILTER_IE_NO_LONGER_PRESENT |
451 WSM_BEACON_FILTER_IE_HAS_APPEARED,
452 .entry[0].oui[0] = 0x50,
453 .entry[0].oui[1] = 0x6F,
454 .entry[0].oui[2] = 0x9A,
455 .entry[1].ie_id = WLAN_EID_HT_OPERATION,
456 .entry[1].flags = WSM_BEACON_FILTER_IE_HAS_CHANGED |
457 WSM_BEACON_FILTER_IE_NO_LONGER_PRESENT |
458 WSM_BEACON_FILTER_IE_HAS_APPEARED,
459 .entry[2].ie_id = WLAN_EID_ERP_INFO,
460 .entry[2].flags = WSM_BEACON_FILTER_IE_HAS_CHANGED |
461 WSM_BEACON_FILTER_IE_NO_LONGER_PRESENT |
462 WSM_BEACON_FILTER_IE_HAS_APPEARED,
463 };
464
465 if (priv->join_status == CW1200_JOIN_STATUS_PASSIVE)
466 return;
467 else if (priv->join_status == CW1200_JOIN_STATUS_MONITOR)
468 bssid_filtering = false;
469
470 if (priv->disable_beacon_filter) {
471 bf_ctrl.enabled = 0;
472 bf_ctrl.bcn_count = 1;
473 bf_tbl.num = __cpu_to_le32(0);
474 } else if (is_p2p || !is_sta) {
475 bf_ctrl.enabled = WSM_BEACON_FILTER_ENABLE |
476 WSM_BEACON_FILTER_AUTO_ERP;
477 bf_ctrl.bcn_count = 0;
478 bf_tbl.num = __cpu_to_le32(2);
479 } else {
480 bf_ctrl.enabled = WSM_BEACON_FILTER_ENABLE;
481 bf_ctrl.bcn_count = 0;
482 bf_tbl.num = __cpu_to_le32(3);
483 }
484
485 /* When acting as p2p client being connected to p2p GO, in order to
486 * receive frames from a different p2p device, turn off bssid filter.
487 *
488 * WARNING: FW dependency!
489 * This can only be used with FW WSM371 and its successors.
490 * In that FW version even with bssid filter turned off,
491 * device will block most of the unwanted frames.
492 */
493 if (is_p2p)
494 bssid_filtering = false;
495
496 ret = wsm_set_rx_filter(priv, &priv->rx_filter);
497 if (!ret)
498 ret = wsm_set_beacon_filter_table(priv, &bf_tbl);
499 if (!ret)
500 ret = wsm_beacon_filter_control(priv, &bf_ctrl);
501 if (!ret)
502 ret = wsm_set_bssid_filtering(priv, bssid_filtering);
503 if (!ret)
504 ret = wsm_set_multicast_filter(priv, &priv->multicast_filter);
505 if (ret)
506 wiphy_err(priv->hw->wiphy,
507 "Update filtering failed: %d.\n", ret);
508 return;
509 }
510
cw1200_update_filtering_work(struct work_struct * work)511 void cw1200_update_filtering_work(struct work_struct *work)
512 {
513 struct cw1200_common *priv =
514 container_of(work, struct cw1200_common,
515 update_filtering_work);
516
517 cw1200_update_filtering(priv);
518 }
519
cw1200_set_beacon_wakeup_period_work(struct work_struct * work)520 void cw1200_set_beacon_wakeup_period_work(struct work_struct *work)
521 {
522 struct cw1200_common *priv =
523 container_of(work, struct cw1200_common,
524 set_beacon_wakeup_period_work);
525
526 wsm_set_beacon_wakeup_period(priv,
527 priv->beacon_int * priv->join_dtim_period >
528 MAX_BEACON_SKIP_TIME_MS ? 1 :
529 priv->join_dtim_period, 0);
530 }
531
cw1200_prepare_multicast(struct ieee80211_hw * hw,struct netdev_hw_addr_list * mc_list)532 u64 cw1200_prepare_multicast(struct ieee80211_hw *hw,
533 struct netdev_hw_addr_list *mc_list)
534 {
535 static u8 broadcast_ipv6[ETH_ALEN] = {
536 0x33, 0x33, 0x00, 0x00, 0x00, 0x01
537 };
538 static u8 broadcast_ipv4[ETH_ALEN] = {
539 0x01, 0x00, 0x5e, 0x00, 0x00, 0x01
540 };
541 struct cw1200_common *priv = hw->priv;
542 struct netdev_hw_addr *ha;
543 int count = 0;
544
545 /* Disable multicast filtering */
546 priv->has_multicast_subscription = false;
547 memset(&priv->multicast_filter, 0x00, sizeof(priv->multicast_filter));
548
549 if (netdev_hw_addr_list_count(mc_list) > WSM_MAX_GRP_ADDRTABLE_ENTRIES)
550 return 0;
551
552 /* Enable if requested */
553 netdev_hw_addr_list_for_each(ha, mc_list) {
554 pr_debug("[STA] multicast: %pM\n", ha->addr);
555 memcpy(&priv->multicast_filter.macaddrs[count],
556 ha->addr, ETH_ALEN);
557 if (!ether_addr_equal(ha->addr, broadcast_ipv4) &&
558 !ether_addr_equal(ha->addr, broadcast_ipv6))
559 priv->has_multicast_subscription = true;
560 count++;
561 }
562
563 if (count) {
564 priv->multicast_filter.enable = __cpu_to_le32(1);
565 priv->multicast_filter.num_addrs = __cpu_to_le32(count);
566 }
567
568 return netdev_hw_addr_list_count(mc_list);
569 }
570
cw1200_configure_filter(struct ieee80211_hw * dev,unsigned int changed_flags,unsigned int * total_flags,u64 multicast)571 void cw1200_configure_filter(struct ieee80211_hw *dev,
572 unsigned int changed_flags,
573 unsigned int *total_flags,
574 u64 multicast)
575 {
576 struct cw1200_common *priv = dev->priv;
577 bool listening = !!(*total_flags &
578 (FIF_OTHER_BSS |
579 FIF_BCN_PRBRESP_PROMISC |
580 FIF_PROBE_REQ));
581
582 *total_flags &= FIF_OTHER_BSS |
583 FIF_FCSFAIL |
584 FIF_BCN_PRBRESP_PROMISC |
585 FIF_PROBE_REQ;
586
587 down(&priv->scan.lock);
588 mutex_lock(&priv->conf_mutex);
589
590 priv->rx_filter.promiscuous = 0;
591 priv->rx_filter.bssid = (*total_flags & (FIF_OTHER_BSS |
592 FIF_PROBE_REQ)) ? 1 : 0;
593 priv->rx_filter.fcs = (*total_flags & FIF_FCSFAIL) ? 1 : 0;
594 priv->disable_beacon_filter = !(*total_flags &
595 (FIF_BCN_PRBRESP_PROMISC |
596 FIF_PROBE_REQ));
597 if (priv->listening != listening) {
598 priv->listening = listening;
599 wsm_lock_tx(priv);
600 cw1200_update_listening(priv, listening);
601 wsm_unlock_tx(priv);
602 }
603 cw1200_update_filtering(priv);
604 mutex_unlock(&priv->conf_mutex);
605 up(&priv->scan.lock);
606 }
607
cw1200_conf_tx(struct ieee80211_hw * dev,struct ieee80211_vif * vif,unsigned int link_id,u16 queue,const struct ieee80211_tx_queue_params * params)608 int cw1200_conf_tx(struct ieee80211_hw *dev, struct ieee80211_vif *vif,
609 unsigned int link_id, u16 queue,
610 const struct ieee80211_tx_queue_params *params)
611 {
612 struct cw1200_common *priv = dev->priv;
613 int ret = 0;
614 /* To prevent re-applying PM request OID again and again*/
615 bool old_uapsd_flags;
616
617 mutex_lock(&priv->conf_mutex);
618
619 if (queue < dev->queues) {
620 old_uapsd_flags = le16_to_cpu(priv->uapsd_info.uapsd_flags);
621
622 WSM_TX_QUEUE_SET(&priv->tx_queue_params, queue, 0, 0, 0);
623 ret = wsm_set_tx_queue_params(priv,
624 &priv->tx_queue_params.params[queue], queue);
625 if (ret) {
626 ret = -EINVAL;
627 goto out;
628 }
629
630 WSM_EDCA_SET(&priv->edca, queue, params->aifs,
631 params->cw_min, params->cw_max,
632 params->txop, 0xc8,
633 params->uapsd);
634 ret = wsm_set_edca_params(priv, &priv->edca);
635 if (ret) {
636 ret = -EINVAL;
637 goto out;
638 }
639
640 if (priv->mode == NL80211_IFTYPE_STATION) {
641 ret = cw1200_set_uapsd_param(priv, &priv->edca);
642 if (!ret && priv->setbssparams_done &&
643 (priv->join_status == CW1200_JOIN_STATUS_STA) &&
644 (old_uapsd_flags != le16_to_cpu(priv->uapsd_info.uapsd_flags)))
645 ret = cw1200_set_pm(priv, &priv->powersave_mode);
646 }
647 } else {
648 ret = -EINVAL;
649 }
650
651 out:
652 mutex_unlock(&priv->conf_mutex);
653 return ret;
654 }
655
cw1200_get_stats(struct ieee80211_hw * dev,struct ieee80211_low_level_stats * stats)656 int cw1200_get_stats(struct ieee80211_hw *dev,
657 struct ieee80211_low_level_stats *stats)
658 {
659 struct cw1200_common *priv = dev->priv;
660
661 memcpy(stats, &priv->stats, sizeof(*stats));
662 return 0;
663 }
664
cw1200_set_pm(struct cw1200_common * priv,const struct wsm_set_pm * arg)665 int cw1200_set_pm(struct cw1200_common *priv, const struct wsm_set_pm *arg)
666 {
667 struct wsm_set_pm pm = *arg;
668
669 if (priv->uapsd_info.uapsd_flags != 0)
670 pm.mode &= ~WSM_PSM_FAST_PS_FLAG;
671
672 if (memcmp(&pm, &priv->firmware_ps_mode,
673 sizeof(struct wsm_set_pm))) {
674 priv->firmware_ps_mode = pm;
675 return wsm_set_pm(priv, &pm);
676 } else {
677 return 0;
678 }
679 }
680
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)681 int cw1200_set_key(struct ieee80211_hw *dev, enum set_key_cmd cmd,
682 struct ieee80211_vif *vif, struct ieee80211_sta *sta,
683 struct ieee80211_key_conf *key)
684 {
685 int ret = -EOPNOTSUPP;
686 struct cw1200_common *priv = dev->priv;
687 struct ieee80211_key_seq seq;
688
689 mutex_lock(&priv->conf_mutex);
690
691 if (cmd == SET_KEY) {
692 u8 *peer_addr = NULL;
693 int pairwise = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) ?
694 1 : 0;
695 int idx = cw1200_alloc_key(priv);
696 struct wsm_add_key *wsm_key = &priv->keys[idx];
697
698 if (idx < 0) {
699 ret = -EINVAL;
700 goto finally;
701 }
702
703 if (sta)
704 peer_addr = sta->addr;
705
706 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE |
707 IEEE80211_KEY_FLAG_RESERVE_TAILROOM;
708
709 switch (key->cipher) {
710 case WLAN_CIPHER_SUITE_WEP40:
711 case WLAN_CIPHER_SUITE_WEP104:
712 if (key->keylen > 16) {
713 cw1200_free_key(priv, idx);
714 ret = -EINVAL;
715 goto finally;
716 }
717
718 if (pairwise) {
719 wsm_key->type = WSM_KEY_TYPE_WEP_PAIRWISE;
720 memcpy(wsm_key->wep_pairwise.peer,
721 peer_addr, ETH_ALEN);
722 memcpy(wsm_key->wep_pairwise.keydata,
723 &key->key[0], key->keylen);
724 wsm_key->wep_pairwise.keylen = key->keylen;
725 } else {
726 wsm_key->type = WSM_KEY_TYPE_WEP_DEFAULT;
727 memcpy(wsm_key->wep_group.keydata,
728 &key->key[0], key->keylen);
729 wsm_key->wep_group.keylen = key->keylen;
730 wsm_key->wep_group.keyid = key->keyidx;
731 }
732 break;
733 case WLAN_CIPHER_SUITE_TKIP:
734 ieee80211_get_key_rx_seq(key, 0, &seq);
735 if (pairwise) {
736 wsm_key->type = WSM_KEY_TYPE_TKIP_PAIRWISE;
737 memcpy(wsm_key->tkip_pairwise.peer,
738 peer_addr, ETH_ALEN);
739 memcpy(wsm_key->tkip_pairwise.keydata,
740 &key->key[0], 16);
741 memcpy(wsm_key->tkip_pairwise.tx_mic_key,
742 &key->key[16], 8);
743 memcpy(wsm_key->tkip_pairwise.rx_mic_key,
744 &key->key[24], 8);
745 } else {
746 size_t mic_offset =
747 (priv->mode == NL80211_IFTYPE_AP) ?
748 16 : 24;
749 wsm_key->type = WSM_KEY_TYPE_TKIP_GROUP;
750 memcpy(wsm_key->tkip_group.keydata,
751 &key->key[0], 16);
752 memcpy(wsm_key->tkip_group.rx_mic_key,
753 &key->key[mic_offset], 8);
754
755 wsm_key->tkip_group.rx_seqnum[0] = seq.tkip.iv16 & 0xff;
756 wsm_key->tkip_group.rx_seqnum[1] = (seq.tkip.iv16 >> 8) & 0xff;
757 wsm_key->tkip_group.rx_seqnum[2] = seq.tkip.iv32 & 0xff;
758 wsm_key->tkip_group.rx_seqnum[3] = (seq.tkip.iv32 >> 8) & 0xff;
759 wsm_key->tkip_group.rx_seqnum[4] = (seq.tkip.iv32 >> 16) & 0xff;
760 wsm_key->tkip_group.rx_seqnum[5] = (seq.tkip.iv32 >> 24) & 0xff;
761 wsm_key->tkip_group.rx_seqnum[6] = 0;
762 wsm_key->tkip_group.rx_seqnum[7] = 0;
763
764 wsm_key->tkip_group.keyid = key->keyidx;
765 }
766 break;
767 case WLAN_CIPHER_SUITE_CCMP:
768 ieee80211_get_key_rx_seq(key, 0, &seq);
769 if (pairwise) {
770 wsm_key->type = WSM_KEY_TYPE_AES_PAIRWISE;
771 memcpy(wsm_key->aes_pairwise.peer,
772 peer_addr, ETH_ALEN);
773 memcpy(wsm_key->aes_pairwise.keydata,
774 &key->key[0], 16);
775 } else {
776 wsm_key->type = WSM_KEY_TYPE_AES_GROUP;
777 memcpy(wsm_key->aes_group.keydata,
778 &key->key[0], 16);
779
780 wsm_key->aes_group.rx_seqnum[0] = seq.ccmp.pn[5];
781 wsm_key->aes_group.rx_seqnum[1] = seq.ccmp.pn[4];
782 wsm_key->aes_group.rx_seqnum[2] = seq.ccmp.pn[3];
783 wsm_key->aes_group.rx_seqnum[3] = seq.ccmp.pn[2];
784 wsm_key->aes_group.rx_seqnum[4] = seq.ccmp.pn[1];
785 wsm_key->aes_group.rx_seqnum[5] = seq.ccmp.pn[0];
786 wsm_key->aes_group.rx_seqnum[6] = 0;
787 wsm_key->aes_group.rx_seqnum[7] = 0;
788 wsm_key->aes_group.keyid = key->keyidx;
789 }
790 break;
791 case WLAN_CIPHER_SUITE_SMS4:
792 if (pairwise) {
793 wsm_key->type = WSM_KEY_TYPE_WAPI_PAIRWISE;
794 memcpy(wsm_key->wapi_pairwise.peer,
795 peer_addr, ETH_ALEN);
796 memcpy(wsm_key->wapi_pairwise.keydata,
797 &key->key[0], 16);
798 memcpy(wsm_key->wapi_pairwise.mic_key,
799 &key->key[16], 16);
800 wsm_key->wapi_pairwise.keyid = key->keyidx;
801 } else {
802 wsm_key->type = WSM_KEY_TYPE_WAPI_GROUP;
803 memcpy(wsm_key->wapi_group.keydata,
804 &key->key[0], 16);
805 memcpy(wsm_key->wapi_group.mic_key,
806 &key->key[16], 16);
807 wsm_key->wapi_group.keyid = key->keyidx;
808 }
809 break;
810 default:
811 pr_warn("Unhandled key type %d\n", key->cipher);
812 cw1200_free_key(priv, idx);
813 ret = -EOPNOTSUPP;
814 goto finally;
815 }
816 ret = wsm_add_key(priv, wsm_key);
817 if (!ret)
818 key->hw_key_idx = idx;
819 else
820 cw1200_free_key(priv, idx);
821 } else if (cmd == DISABLE_KEY) {
822 struct wsm_remove_key wsm_key = {
823 .index = key->hw_key_idx,
824 };
825
826 if (wsm_key.index > WSM_KEY_MAX_INDEX) {
827 ret = -EINVAL;
828 goto finally;
829 }
830
831 cw1200_free_key(priv, wsm_key.index);
832 ret = wsm_remove_key(priv, &wsm_key);
833 } else {
834 pr_warn("Unhandled key command %d\n", cmd);
835 }
836
837 finally:
838 mutex_unlock(&priv->conf_mutex);
839 return ret;
840 }
841
cw1200_wep_key_work(struct work_struct * work)842 void cw1200_wep_key_work(struct work_struct *work)
843 {
844 struct cw1200_common *priv =
845 container_of(work, struct cw1200_common, wep_key_work);
846 u8 queue_id = cw1200_queue_get_queue_id(priv->pending_frame_id);
847 struct cw1200_queue *queue = &priv->tx_queue[queue_id];
848 __le32 wep_default_key_id = __cpu_to_le32(
849 priv->wep_default_key_id);
850
851 pr_debug("[STA] Setting default WEP key: %d\n",
852 priv->wep_default_key_id);
853 wsm_flush_tx(priv);
854 wsm_write_mib(priv, WSM_MIB_ID_DOT11_WEP_DEFAULT_KEY_ID,
855 &wep_default_key_id, sizeof(wep_default_key_id));
856 cw1200_queue_requeue(queue, priv->pending_frame_id);
857 wsm_unlock_tx(priv);
858 }
859
cw1200_set_rts_threshold(struct ieee80211_hw * hw,int radio_idx,u32 value)860 int cw1200_set_rts_threshold(struct ieee80211_hw *hw, int radio_idx,
861 u32 value)
862 {
863 int ret = 0;
864 __le32 val32;
865 struct cw1200_common *priv = hw->priv;
866
867 if (priv->mode == NL80211_IFTYPE_UNSPECIFIED)
868 return 0;
869
870 if (value != (u32) -1)
871 val32 = __cpu_to_le32(value);
872 else
873 val32 = 0; /* disabled */
874
875 if (priv->rts_threshold == value)
876 goto out;
877
878 pr_debug("[STA] Setting RTS threshold: %d\n",
879 priv->rts_threshold);
880
881 /* mutex_lock(&priv->conf_mutex); */
882 ret = wsm_write_mib(priv, WSM_MIB_ID_DOT11_RTS_THRESHOLD,
883 &val32, sizeof(val32));
884 if (!ret)
885 priv->rts_threshold = value;
886 /* mutex_unlock(&priv->conf_mutex); */
887
888 out:
889 return ret;
890 }
891
892 /* If successful, LOCKS the TX queue! */
__cw1200_flush(struct cw1200_common * priv,bool drop)893 static int __cw1200_flush(struct cw1200_common *priv, bool drop)
894 {
895 int i, ret;
896
897 for (;;) {
898 /* TODO: correct flush handling is required when dev_stop.
899 * Temporary workaround: 2s
900 */
901 if (drop) {
902 for (i = 0; i < 4; ++i)
903 cw1200_queue_clear(&priv->tx_queue[i]);
904 } else {
905 ret = wait_event_timeout(
906 priv->tx_queue_stats.wait_link_id_empty,
907 cw1200_queue_stats_is_empty(
908 &priv->tx_queue_stats, -1),
909 2 * HZ);
910 }
911
912 if (!drop && ret <= 0) {
913 ret = -ETIMEDOUT;
914 break;
915 } else {
916 ret = 0;
917 }
918
919 wsm_lock_tx(priv);
920 if (!cw1200_queue_stats_is_empty(&priv->tx_queue_stats, -1)) {
921 /* Highly unlikely: WSM requeued frames. */
922 wsm_unlock_tx(priv);
923 continue;
924 }
925 break;
926 }
927 return ret;
928 }
929
cw1200_flush(struct ieee80211_hw * hw,struct ieee80211_vif * vif,u32 queues,bool drop)930 void cw1200_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
931 u32 queues, bool drop)
932 {
933 struct cw1200_common *priv = hw->priv;
934
935 switch (priv->mode) {
936 case NL80211_IFTYPE_MONITOR:
937 drop = true;
938 break;
939 case NL80211_IFTYPE_AP:
940 if (!priv->enable_beacon)
941 drop = true;
942 break;
943 }
944
945 if (!__cw1200_flush(priv, drop))
946 wsm_unlock_tx(priv);
947
948 return;
949 }
950
951 /* ******************************************************************** */
952 /* WSM callbacks */
953
cw1200_free_event_queue(struct cw1200_common * priv)954 void cw1200_free_event_queue(struct cw1200_common *priv)
955 {
956 LIST_HEAD(list);
957
958 spin_lock(&priv->event_queue_lock);
959 list_splice_init(&priv->event_queue, &list);
960 spin_unlock(&priv->event_queue_lock);
961
962 __cw1200_free_event_queue(&list);
963 }
964
cw1200_event_handler(struct work_struct * work)965 void cw1200_event_handler(struct work_struct *work)
966 {
967 struct cw1200_common *priv =
968 container_of(work, struct cw1200_common, event_handler);
969 struct cw1200_wsm_event *event;
970 LIST_HEAD(list);
971
972 spin_lock(&priv->event_queue_lock);
973 list_splice_init(&priv->event_queue, &list);
974 spin_unlock(&priv->event_queue_lock);
975
976 list_for_each_entry(event, &list, link) {
977 switch (event->evt.id) {
978 case WSM_EVENT_ERROR:
979 pr_err("Unhandled WSM Error from LMAC\n");
980 break;
981 case WSM_EVENT_BSS_LOST:
982 pr_debug("[CQM] BSS lost.\n");
983 cancel_work_sync(&priv->unjoin_work);
984 if (!down_trylock(&priv->scan.lock)) {
985 cw1200_cqm_bssloss_sm(priv, 1, 0, 0);
986 up(&priv->scan.lock);
987 } else {
988 /* Scan is in progress. Delay reporting.
989 * Scan complete will trigger bss_loss_work
990 */
991 priv->delayed_link_loss = 1;
992 /* Also start a watchdog. */
993 queue_delayed_work(priv->workqueue,
994 &priv->bss_loss_work, 5*HZ);
995 }
996 break;
997 case WSM_EVENT_BSS_REGAINED:
998 pr_debug("[CQM] BSS regained.\n");
999 cw1200_cqm_bssloss_sm(priv, 0, 0, 0);
1000 cancel_work_sync(&priv->unjoin_work);
1001 break;
1002 case WSM_EVENT_RADAR_DETECTED:
1003 wiphy_info(priv->hw->wiphy, "radar pulse detected\n");
1004 break;
1005 case WSM_EVENT_RCPI_RSSI:
1006 {
1007 /* RSSI: signed Q8.0, RCPI: unsigned Q7.1
1008 * RSSI = RCPI / 2 - 110
1009 */
1010 int rcpi_rssi = (int)(event->evt.data & 0xFF);
1011 int cqm_evt;
1012 if (priv->cqm_use_rssi)
1013 rcpi_rssi = (s8)rcpi_rssi;
1014 else
1015 rcpi_rssi = rcpi_rssi / 2 - 110;
1016
1017 cqm_evt = (rcpi_rssi <= priv->cqm_rssi_thold) ?
1018 NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW :
1019 NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH;
1020 pr_debug("[CQM] RSSI event: %d.\n", rcpi_rssi);
1021 ieee80211_cqm_rssi_notify(priv->vif, cqm_evt, rcpi_rssi,
1022 GFP_KERNEL);
1023 break;
1024 }
1025 case WSM_EVENT_BT_INACTIVE:
1026 pr_warn("Unhandled BT INACTIVE from LMAC\n");
1027 break;
1028 case WSM_EVENT_BT_ACTIVE:
1029 pr_warn("Unhandled BT ACTIVE from LMAC\n");
1030 break;
1031 }
1032 }
1033 __cw1200_free_event_queue(&list);
1034 }
1035
cw1200_bss_loss_work(struct work_struct * work)1036 void cw1200_bss_loss_work(struct work_struct *work)
1037 {
1038 struct cw1200_common *priv =
1039 container_of(work, struct cw1200_common, bss_loss_work.work);
1040
1041 pr_debug("[CQM] Reporting connection loss.\n");
1042 wsm_lock_tx(priv);
1043 if (queue_work(priv->workqueue, &priv->unjoin_work) <= 0)
1044 wsm_unlock_tx(priv);
1045 }
1046
cw1200_bss_params_work(struct work_struct * work)1047 void cw1200_bss_params_work(struct work_struct *work)
1048 {
1049 struct cw1200_common *priv =
1050 container_of(work, struct cw1200_common, bss_params_work);
1051 mutex_lock(&priv->conf_mutex);
1052
1053 priv->bss_params.reset_beacon_loss = 1;
1054 wsm_set_bss_params(priv, &priv->bss_params);
1055 priv->bss_params.reset_beacon_loss = 0;
1056
1057 mutex_unlock(&priv->conf_mutex);
1058 }
1059
1060 /* ******************************************************************** */
1061 /* Internal API */
1062
1063 /* This function is called to Parse the SDD file
1064 * to extract listen_interval and PTA related information
1065 * sdd is a TLV: u8 id, u8 len, u8 data[]
1066 */
cw1200_parse_sdd_file(struct cw1200_common * priv)1067 static int cw1200_parse_sdd_file(struct cw1200_common *priv)
1068 {
1069 const u8 *p = priv->sdd->data;
1070 int ret = 0;
1071
1072 while (p + 2 <= priv->sdd->data + priv->sdd->size) {
1073 if (p + p[1] + 2 > priv->sdd->data + priv->sdd->size) {
1074 pr_warn("Malformed sdd structure\n");
1075 return -1;
1076 }
1077 switch (p[0]) {
1078 case SDD_PTA_CFG_ELT_ID: {
1079 u16 v;
1080 if (p[1] < 4) {
1081 pr_warn("SDD_PTA_CFG_ELT_ID malformed\n");
1082 ret = -1;
1083 break;
1084 }
1085 v = le16_to_cpu(*((__le16 *)(p + 2)));
1086 if (!v) /* non-zero means this is enabled */
1087 break;
1088
1089 v = le16_to_cpu(*((__le16 *)(p + 4)));
1090 priv->conf_listen_interval = (v >> 7) & 0x1F;
1091 pr_debug("PTA found; Listen Interval %d\n",
1092 priv->conf_listen_interval);
1093 break;
1094 }
1095 case SDD_REFERENCE_FREQUENCY_ELT_ID: {
1096 u16 clk = le16_to_cpu(*((__le16 *)(p + 2)));
1097 if (clk != priv->hw_refclk)
1098 pr_warn("SDD file doesn't match configured refclk (%d vs %d)\n",
1099 clk, priv->hw_refclk);
1100 break;
1101 }
1102 default:
1103 break;
1104 }
1105 p += p[1] + 2;
1106 }
1107
1108 if (!priv->bt_present) {
1109 pr_debug("PTA element NOT found.\n");
1110 priv->conf_listen_interval = 0;
1111 }
1112 return ret;
1113 }
1114
cw1200_setup_mac(struct cw1200_common * priv)1115 int cw1200_setup_mac(struct cw1200_common *priv)
1116 {
1117 int ret = 0;
1118
1119 /* NOTE: There is a bug in FW: it reports signal
1120 * as RSSI if RSSI subscription is enabled.
1121 * It's not enough to set WSM_RCPI_RSSI_USE_RSSI.
1122 *
1123 * NOTE2: RSSI based reports have been switched to RCPI, since
1124 * FW has a bug and RSSI reported values are not stable,
1125 * what can lead to signal level oscilations in user-end applications
1126 */
1127 struct wsm_rcpi_rssi_threshold threshold = {
1128 .rssiRcpiMode = WSM_RCPI_RSSI_THRESHOLD_ENABLE |
1129 WSM_RCPI_RSSI_DONT_USE_UPPER |
1130 WSM_RCPI_RSSI_DONT_USE_LOWER,
1131 .rollingAverageCount = 16,
1132 };
1133
1134 struct wsm_configuration cfg = {
1135 .dot11StationId = &priv->mac_addr[0],
1136 };
1137
1138 /* Remember the decission here to make sure, we will handle
1139 * the RCPI/RSSI value correctly on WSM_EVENT_RCPI_RSS
1140 */
1141 if (threshold.rssiRcpiMode & WSM_RCPI_RSSI_USE_RSSI)
1142 priv->cqm_use_rssi = true;
1143
1144 if (!priv->sdd) {
1145 ret = request_firmware(&priv->sdd, priv->sdd_path, priv->pdev);
1146 if (ret) {
1147 pr_err("Can't load sdd file %s.\n", priv->sdd_path);
1148 return ret;
1149 }
1150 cw1200_parse_sdd_file(priv);
1151 }
1152
1153 cfg.dpdData = priv->sdd->data;
1154 cfg.dpdData_size = priv->sdd->size;
1155 ret = wsm_configuration(priv, &cfg);
1156 if (ret)
1157 return ret;
1158
1159 /* Configure RSSI/SCPI reporting as RSSI. */
1160 wsm_set_rcpi_rssi_threshold(priv, &threshold);
1161
1162 return 0;
1163 }
1164
cw1200_join_complete(struct cw1200_common * priv)1165 static void cw1200_join_complete(struct cw1200_common *priv)
1166 {
1167 pr_debug("[STA] Join complete (%d)\n", priv->join_complete_status);
1168
1169 priv->join_pending = false;
1170 if (priv->join_complete_status) {
1171 priv->join_status = CW1200_JOIN_STATUS_PASSIVE;
1172 cw1200_update_listening(priv, priv->listening);
1173 cw1200_do_unjoin(priv);
1174 ieee80211_connection_loss(priv->vif);
1175 } else {
1176 if (priv->mode == NL80211_IFTYPE_ADHOC)
1177 priv->join_status = CW1200_JOIN_STATUS_IBSS;
1178 else
1179 priv->join_status = CW1200_JOIN_STATUS_PRE_STA;
1180 }
1181 wsm_unlock_tx(priv); /* Clearing the lock held before do_join() */
1182 }
1183
cw1200_join_complete_work(struct work_struct * work)1184 void cw1200_join_complete_work(struct work_struct *work)
1185 {
1186 struct cw1200_common *priv =
1187 container_of(work, struct cw1200_common, join_complete_work);
1188 mutex_lock(&priv->conf_mutex);
1189 cw1200_join_complete(priv);
1190 mutex_unlock(&priv->conf_mutex);
1191 }
1192
cw1200_join_complete_cb(struct cw1200_common * priv,struct wsm_join_complete * arg)1193 void cw1200_join_complete_cb(struct cw1200_common *priv,
1194 struct wsm_join_complete *arg)
1195 {
1196 pr_debug("[STA] cw1200_join_complete_cb called, status=%d.\n",
1197 arg->status);
1198
1199 if (cancel_delayed_work(&priv->join_timeout)) {
1200 priv->join_complete_status = arg->status;
1201 queue_work(priv->workqueue, &priv->join_complete_work);
1202 }
1203 }
1204
1205 /* MUST be called with tx_lock held! It will be unlocked for us. */
cw1200_do_join(struct cw1200_common * priv)1206 static void cw1200_do_join(struct cw1200_common *priv)
1207 {
1208 const u8 *bssid;
1209 struct ieee80211_bss_conf *conf = &priv->vif->bss_conf;
1210 struct cfg80211_bss *bss = NULL;
1211 struct wsm_protected_mgmt_policy mgmt_policy;
1212 struct wsm_join join = {
1213 .mode = priv->vif->cfg.ibss_joined ?
1214 WSM_JOIN_MODE_IBSS : WSM_JOIN_MODE_BSS,
1215 .preamble_type = WSM_JOIN_PREAMBLE_LONG,
1216 .probe_for_join = 1,
1217 .atim_window = 0,
1218 .basic_rate_set = cw1200_rate_mask_to_wsm(priv,
1219 conf->basic_rates),
1220 };
1221 if (delayed_work_pending(&priv->join_timeout)) {
1222 pr_warn("[STA] - Join request already pending, skipping..\n");
1223 wsm_unlock_tx(priv);
1224 return;
1225 }
1226
1227 if (priv->join_status)
1228 cw1200_do_unjoin(priv);
1229
1230 bssid = priv->vif->bss_conf.bssid;
1231
1232 bss = cfg80211_get_bss(priv->hw->wiphy, priv->channel, bssid, NULL, 0,
1233 IEEE80211_BSS_TYPE_ANY, IEEE80211_PRIVACY_ANY);
1234
1235 if (!bss && !priv->vif->cfg.ibss_joined) {
1236 wsm_unlock_tx(priv);
1237 return;
1238 }
1239
1240 mutex_lock(&priv->conf_mutex);
1241
1242 /* Under the conf lock: check scan status and
1243 * bail out if it is in progress.
1244 */
1245 if (atomic_read(&priv->scan.in_progress)) {
1246 wsm_unlock_tx(priv);
1247 goto done_put;
1248 }
1249
1250 priv->join_pending = true;
1251
1252 /* Sanity check basic rates */
1253 if (!join.basic_rate_set)
1254 join.basic_rate_set = 7;
1255
1256 /* Sanity check beacon interval */
1257 if (!priv->beacon_int)
1258 priv->beacon_int = 1;
1259
1260 join.beacon_interval = priv->beacon_int;
1261
1262 /* BT Coex related changes */
1263 if (priv->bt_present) {
1264 if (((priv->conf_listen_interval * 100) %
1265 priv->beacon_int) == 0)
1266 priv->listen_interval =
1267 ((priv->conf_listen_interval * 100) /
1268 priv->beacon_int);
1269 else
1270 priv->listen_interval =
1271 ((priv->conf_listen_interval * 100) /
1272 priv->beacon_int + 1);
1273 }
1274
1275 if (priv->hw->conf.ps_dtim_period)
1276 priv->join_dtim_period = priv->hw->conf.ps_dtim_period;
1277 join.dtim_period = priv->join_dtim_period;
1278
1279 join.channel_number = priv->channel->hw_value;
1280 join.band = (priv->channel->band == NL80211_BAND_5GHZ) ?
1281 WSM_PHY_BAND_5G : WSM_PHY_BAND_2_4G;
1282
1283 memcpy(join.bssid, bssid, sizeof(join.bssid));
1284
1285 pr_debug("[STA] Join BSSID: %pM DTIM: %d, interval: %d\n",
1286 join.bssid,
1287 join.dtim_period, priv->beacon_int);
1288
1289 if (!priv->vif->cfg.ibss_joined) {
1290 const u8 *ssidie;
1291 rcu_read_lock();
1292 ssidie = ieee80211_bss_get_ie(bss, WLAN_EID_SSID);
1293 if (ssidie) {
1294 join.ssid_len = ssidie[1];
1295 memcpy(join.ssid, &ssidie[2], join.ssid_len);
1296 }
1297 rcu_read_unlock();
1298 }
1299
1300 if (priv->vif->p2p) {
1301 join.flags |= WSM_JOIN_FLAGS_P2P_GO;
1302 join.basic_rate_set =
1303 cw1200_rate_mask_to_wsm(priv, 0xFF0);
1304 }
1305
1306 /* Enable asynchronous join calls */
1307 if (!priv->vif->cfg.ibss_joined) {
1308 join.flags |= WSM_JOIN_FLAGS_FORCE;
1309 join.flags |= WSM_JOIN_FLAGS_FORCE_WITH_COMPLETE_IND;
1310 }
1311
1312 wsm_flush_tx(priv);
1313
1314 /* Stay Awake for Join and Auth Timeouts and a bit more */
1315 cw1200_pm_stay_awake(&priv->pm_state,
1316 CW1200_JOIN_TIMEOUT + CW1200_AUTH_TIMEOUT);
1317
1318 cw1200_update_listening(priv, false);
1319
1320 /* Turn on Block ACKs */
1321 wsm_set_block_ack_policy(priv, priv->ba_tx_tid_mask,
1322 priv->ba_rx_tid_mask);
1323
1324 /* Set up timeout */
1325 if (join.flags & WSM_JOIN_FLAGS_FORCE_WITH_COMPLETE_IND) {
1326 priv->join_status = CW1200_JOIN_STATUS_JOINING;
1327 queue_delayed_work(priv->workqueue,
1328 &priv->join_timeout,
1329 CW1200_JOIN_TIMEOUT);
1330 }
1331
1332 /* 802.11w protected mgmt frames */
1333 mgmt_policy.protectedMgmtEnable = 0;
1334 mgmt_policy.unprotectedMgmtFramesAllowed = 1;
1335 mgmt_policy.encryptionForAuthFrame = 1;
1336 wsm_set_protected_mgmt_policy(priv, &mgmt_policy);
1337
1338 /* Perform actual join */
1339 if (wsm_join(priv, &join)) {
1340 pr_err("[STA] cw1200_join_work: wsm_join failed!\n");
1341 cancel_delayed_work_sync(&priv->join_timeout);
1342 cw1200_update_listening(priv, priv->listening);
1343 /* Tx lock still held, unjoin will clear it. */
1344 if (queue_work(priv->workqueue, &priv->unjoin_work) <= 0)
1345 wsm_unlock_tx(priv);
1346 } else {
1347 if (!(join.flags & WSM_JOIN_FLAGS_FORCE_WITH_COMPLETE_IND))
1348 cw1200_join_complete(priv); /* Will clear tx_lock */
1349
1350 /* Upload keys */
1351 cw1200_upload_keys(priv);
1352
1353 /* Due to beacon filtering it is possible that the
1354 * AP's beacon is not known for the mac80211 stack.
1355 * Disable filtering temporary to make sure the stack
1356 * receives at least one
1357 */
1358 priv->disable_beacon_filter = true;
1359 }
1360 cw1200_update_filtering(priv);
1361
1362 done_put:
1363 mutex_unlock(&priv->conf_mutex);
1364 if (bss)
1365 cfg80211_put_bss(priv->hw->wiphy, bss);
1366 }
1367
cw1200_join_timeout(struct work_struct * work)1368 void cw1200_join_timeout(struct work_struct *work)
1369 {
1370 struct cw1200_common *priv =
1371 container_of(work, struct cw1200_common, join_timeout.work);
1372 pr_debug("[WSM] Join timed out.\n");
1373 wsm_lock_tx(priv);
1374 if (queue_work(priv->workqueue, &priv->unjoin_work) <= 0)
1375 wsm_unlock_tx(priv);
1376 }
1377
cw1200_do_unjoin(struct cw1200_common * priv)1378 static void cw1200_do_unjoin(struct cw1200_common *priv)
1379 {
1380 struct wsm_reset reset = {
1381 .reset_statistics = true,
1382 };
1383
1384 cancel_delayed_work_sync(&priv->join_timeout);
1385
1386 mutex_lock(&priv->conf_mutex);
1387 priv->join_pending = false;
1388
1389 if (atomic_read(&priv->scan.in_progress)) {
1390 if (priv->delayed_unjoin)
1391 wiphy_dbg(priv->hw->wiphy, "Delayed unjoin is already scheduled.\n");
1392 else
1393 priv->delayed_unjoin = true;
1394 goto done;
1395 }
1396
1397 priv->delayed_link_loss = false;
1398
1399 if (!priv->join_status)
1400 goto done;
1401
1402 if (priv->join_status == CW1200_JOIN_STATUS_AP)
1403 goto done;
1404
1405 cancel_work_sync(&priv->update_filtering_work);
1406 cancel_work_sync(&priv->set_beacon_wakeup_period_work);
1407 priv->join_status = CW1200_JOIN_STATUS_PASSIVE;
1408
1409 /* Unjoin is a reset. */
1410 wsm_flush_tx(priv);
1411 wsm_keep_alive_period(priv, 0);
1412 wsm_reset(priv, &reset);
1413 wsm_set_output_power(priv, priv->output_power * 10);
1414 priv->join_dtim_period = 0;
1415 cw1200_setup_mac(priv);
1416 cw1200_free_event_queue(priv);
1417 cancel_work_sync(&priv->event_handler);
1418 cw1200_update_listening(priv, priv->listening);
1419 cw1200_cqm_bssloss_sm(priv, 0, 0, 0);
1420
1421 /* Disable Block ACKs */
1422 wsm_set_block_ack_policy(priv, 0, 0);
1423
1424 priv->disable_beacon_filter = false;
1425 cw1200_update_filtering(priv);
1426 memset(&priv->association_mode, 0,
1427 sizeof(priv->association_mode));
1428 memset(&priv->bss_params, 0, sizeof(priv->bss_params));
1429 priv->setbssparams_done = false;
1430 memset(&priv->firmware_ps_mode, 0,
1431 sizeof(priv->firmware_ps_mode));
1432
1433 pr_debug("[STA] Unjoin completed.\n");
1434
1435 done:
1436 mutex_unlock(&priv->conf_mutex);
1437 }
1438
cw1200_unjoin_work(struct work_struct * work)1439 void cw1200_unjoin_work(struct work_struct *work)
1440 {
1441 struct cw1200_common *priv =
1442 container_of(work, struct cw1200_common, unjoin_work);
1443
1444 cw1200_do_unjoin(priv);
1445
1446 /* Tell the stack we're dead */
1447 ieee80211_connection_loss(priv->vif);
1448
1449 wsm_unlock_tx(priv);
1450 }
1451
cw1200_enable_listening(struct cw1200_common * priv)1452 int cw1200_enable_listening(struct cw1200_common *priv)
1453 {
1454 struct wsm_start start = {
1455 .mode = WSM_START_MODE_P2P_DEV,
1456 .band = WSM_PHY_BAND_2_4G,
1457 .beacon_interval = 100,
1458 .dtim_period = 1,
1459 .probe_delay = 0,
1460 .basic_rate_set = 0x0F,
1461 };
1462
1463 if (priv->channel) {
1464 start.band = priv->channel->band == NL80211_BAND_5GHZ ?
1465 WSM_PHY_BAND_5G : WSM_PHY_BAND_2_4G;
1466 start.channel_number = priv->channel->hw_value;
1467 } else {
1468 start.band = WSM_PHY_BAND_2_4G;
1469 start.channel_number = 1;
1470 }
1471
1472 return wsm_start(priv, &start);
1473 }
1474
cw1200_disable_listening(struct cw1200_common * priv)1475 int cw1200_disable_listening(struct cw1200_common *priv)
1476 {
1477 int ret;
1478 struct wsm_reset reset = {
1479 .reset_statistics = true,
1480 };
1481 ret = wsm_reset(priv, &reset);
1482 return ret;
1483 }
1484
cw1200_update_listening(struct cw1200_common * priv,bool enabled)1485 void cw1200_update_listening(struct cw1200_common *priv, bool enabled)
1486 {
1487 if (enabled) {
1488 if (priv->join_status == CW1200_JOIN_STATUS_PASSIVE) {
1489 if (!cw1200_enable_listening(priv))
1490 priv->join_status = CW1200_JOIN_STATUS_MONITOR;
1491 wsm_set_probe_responder(priv, true);
1492 }
1493 } else {
1494 if (priv->join_status == CW1200_JOIN_STATUS_MONITOR) {
1495 if (!cw1200_disable_listening(priv))
1496 priv->join_status = CW1200_JOIN_STATUS_PASSIVE;
1497 wsm_set_probe_responder(priv, false);
1498 }
1499 }
1500 }
1501
cw1200_set_uapsd_param(struct cw1200_common * priv,const struct wsm_edca_params * arg)1502 int cw1200_set_uapsd_param(struct cw1200_common *priv,
1503 const struct wsm_edca_params *arg)
1504 {
1505 int ret;
1506 u16 uapsd_flags = 0;
1507
1508 /* Here's the mapping AC [queue, bit]
1509 * VO [0,3], VI [1, 2], BE [2, 1], BK [3, 0]
1510 */
1511
1512 if (arg->uapsd_enable[0])
1513 uapsd_flags |= 1 << 3;
1514
1515 if (arg->uapsd_enable[1])
1516 uapsd_flags |= 1 << 2;
1517
1518 if (arg->uapsd_enable[2])
1519 uapsd_flags |= 1 << 1;
1520
1521 if (arg->uapsd_enable[3])
1522 uapsd_flags |= 1;
1523
1524 /* Currently pseudo U-APSD operation is not supported, so setting
1525 * MinAutoTriggerInterval, MaxAutoTriggerInterval and
1526 * AutoTriggerStep to 0
1527 */
1528
1529 priv->uapsd_info.uapsd_flags = cpu_to_le16(uapsd_flags);
1530 priv->uapsd_info.min_auto_trigger_interval = 0;
1531 priv->uapsd_info.max_auto_trigger_interval = 0;
1532 priv->uapsd_info.auto_trigger_step = 0;
1533
1534 ret = wsm_set_uapsd_info(priv, &priv->uapsd_info);
1535 return ret;
1536 }
1537
1538 /* ******************************************************************** */
1539 /* AP API */
1540
cw1200_sta_add(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_sta * sta)1541 int cw1200_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
1542 struct ieee80211_sta *sta)
1543 {
1544 struct cw1200_common *priv = hw->priv;
1545 struct cw1200_sta_priv *sta_priv =
1546 (struct cw1200_sta_priv *)&sta->drv_priv;
1547 struct cw1200_link_entry *entry;
1548 struct sk_buff *skb;
1549
1550 if (priv->mode != NL80211_IFTYPE_AP)
1551 return 0;
1552
1553 sta_priv->link_id = cw1200_find_link_id(priv, sta->addr);
1554 if (WARN_ON(!sta_priv->link_id)) {
1555 wiphy_info(priv->hw->wiphy,
1556 "[AP] No more link IDs available.\n");
1557 return -ENOENT;
1558 }
1559
1560 entry = &priv->link_id_db[sta_priv->link_id - 1];
1561 spin_lock_bh(&priv->ps_state_lock);
1562 if ((sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK) ==
1563 IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
1564 priv->sta_asleep_mask |= BIT(sta_priv->link_id);
1565 entry->status = CW1200_LINK_HARD;
1566 while ((skb = skb_dequeue(&entry->rx_queue)))
1567 ieee80211_rx_irqsafe(priv->hw, skb);
1568 spin_unlock_bh(&priv->ps_state_lock);
1569 return 0;
1570 }
1571
cw1200_sta_remove(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_sta * sta)1572 int cw1200_sta_remove(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
1573 struct ieee80211_sta *sta)
1574 {
1575 struct cw1200_common *priv = hw->priv;
1576 struct cw1200_sta_priv *sta_priv =
1577 (struct cw1200_sta_priv *)&sta->drv_priv;
1578 struct cw1200_link_entry *entry;
1579
1580 if (priv->mode != NL80211_IFTYPE_AP || !sta_priv->link_id)
1581 return 0;
1582
1583 entry = &priv->link_id_db[sta_priv->link_id - 1];
1584 spin_lock_bh(&priv->ps_state_lock);
1585 entry->status = CW1200_LINK_RESERVE;
1586 entry->timestamp = jiffies;
1587 wsm_lock_tx_async(priv);
1588 if (queue_work(priv->workqueue, &priv->link_id_work) <= 0)
1589 wsm_unlock_tx(priv);
1590 spin_unlock_bh(&priv->ps_state_lock);
1591 flush_workqueue(priv->workqueue);
1592 return 0;
1593 }
1594
__cw1200_sta_notify(struct ieee80211_hw * dev,struct ieee80211_vif * vif,enum sta_notify_cmd notify_cmd,int link_id)1595 static void __cw1200_sta_notify(struct ieee80211_hw *dev,
1596 struct ieee80211_vif *vif,
1597 enum sta_notify_cmd notify_cmd,
1598 int link_id)
1599 {
1600 struct cw1200_common *priv = dev->priv;
1601 u32 bit, prev;
1602
1603 /* Zero link id means "for all link IDs" */
1604 if (link_id)
1605 bit = BIT(link_id);
1606 else if (WARN_ON_ONCE(notify_cmd != STA_NOTIFY_AWAKE))
1607 bit = 0;
1608 else
1609 bit = priv->link_id_map;
1610 prev = priv->sta_asleep_mask & bit;
1611
1612 switch (notify_cmd) {
1613 case STA_NOTIFY_SLEEP:
1614 if (!prev) {
1615 if (priv->buffered_multicasts &&
1616 !priv->sta_asleep_mask)
1617 queue_work(priv->workqueue,
1618 &priv->multicast_start_work);
1619 priv->sta_asleep_mask |= bit;
1620 }
1621 break;
1622 case STA_NOTIFY_AWAKE:
1623 if (prev) {
1624 priv->sta_asleep_mask &= ~bit;
1625 priv->pspoll_mask &= ~bit;
1626 if (priv->tx_multicast && link_id &&
1627 !priv->sta_asleep_mask)
1628 queue_work(priv->workqueue,
1629 &priv->multicast_stop_work);
1630 cw1200_bh_wakeup(priv);
1631 }
1632 break;
1633 }
1634 }
1635
cw1200_sta_notify(struct ieee80211_hw * dev,struct ieee80211_vif * vif,enum sta_notify_cmd notify_cmd,struct ieee80211_sta * sta)1636 void cw1200_sta_notify(struct ieee80211_hw *dev,
1637 struct ieee80211_vif *vif,
1638 enum sta_notify_cmd notify_cmd,
1639 struct ieee80211_sta *sta)
1640 {
1641 struct cw1200_common *priv = dev->priv;
1642 struct cw1200_sta_priv *sta_priv =
1643 (struct cw1200_sta_priv *)&sta->drv_priv;
1644
1645 spin_lock_bh(&priv->ps_state_lock);
1646 __cw1200_sta_notify(dev, vif, notify_cmd, sta_priv->link_id);
1647 spin_unlock_bh(&priv->ps_state_lock);
1648 }
1649
cw1200_ps_notify(struct cw1200_common * priv,int link_id,bool ps)1650 static void cw1200_ps_notify(struct cw1200_common *priv,
1651 int link_id, bool ps)
1652 {
1653 if (link_id > CW1200_MAX_STA_IN_AP_MODE)
1654 return;
1655
1656 pr_debug("%s for LinkId: %d. STAs asleep: %.8X\n",
1657 ps ? "Stop" : "Start",
1658 link_id, priv->sta_asleep_mask);
1659
1660 __cw1200_sta_notify(priv->hw, priv->vif,
1661 ps ? STA_NOTIFY_SLEEP : STA_NOTIFY_AWAKE, link_id);
1662 }
1663
cw1200_set_tim_impl(struct cw1200_common * priv,bool aid0_bit_set)1664 static int cw1200_set_tim_impl(struct cw1200_common *priv, bool aid0_bit_set)
1665 {
1666 struct sk_buff *skb;
1667 struct wsm_update_ie update_ie = {
1668 .what = WSM_UPDATE_IE_BEACON,
1669 .count = 1,
1670 };
1671 u16 tim_offset, tim_length;
1672
1673 pr_debug("[AP] mcast: %s.\n", aid0_bit_set ? "ena" : "dis");
1674
1675 skb = ieee80211_beacon_get_tim(priv->hw, priv->vif,
1676 &tim_offset, &tim_length, 0);
1677 if (!skb) {
1678 if (!__cw1200_flush(priv, true))
1679 wsm_unlock_tx(priv);
1680 return -ENOENT;
1681 }
1682
1683 if (tim_offset && tim_length >= 6) {
1684 /* Ignore DTIM count from mac80211:
1685 * firmware handles DTIM internally.
1686 */
1687 skb->data[tim_offset + 2] = 0;
1688
1689 /* Set/reset aid0 bit */
1690 if (aid0_bit_set)
1691 skb->data[tim_offset + 4] |= 1;
1692 else
1693 skb->data[tim_offset + 4] &= ~1;
1694 }
1695
1696 update_ie.ies = &skb->data[tim_offset];
1697 update_ie.length = tim_length;
1698 wsm_update_ie(priv, &update_ie);
1699
1700 dev_kfree_skb(skb);
1701
1702 return 0;
1703 }
1704
cw1200_set_tim_work(struct work_struct * work)1705 void cw1200_set_tim_work(struct work_struct *work)
1706 {
1707 struct cw1200_common *priv =
1708 container_of(work, struct cw1200_common, set_tim_work);
1709 (void)cw1200_set_tim_impl(priv, priv->aid0_bit_set);
1710 }
1711
cw1200_set_tim(struct ieee80211_hw * dev,struct ieee80211_sta * sta,bool set)1712 int cw1200_set_tim(struct ieee80211_hw *dev, struct ieee80211_sta *sta,
1713 bool set)
1714 {
1715 struct cw1200_common *priv = dev->priv;
1716 queue_work(priv->workqueue, &priv->set_tim_work);
1717 return 0;
1718 }
1719
cw1200_set_cts_work(struct work_struct * work)1720 void cw1200_set_cts_work(struct work_struct *work)
1721 {
1722 struct cw1200_common *priv =
1723 container_of(work, struct cw1200_common, set_cts_work);
1724
1725 u8 erp_ie[3] = {WLAN_EID_ERP_INFO, 0x1, 0};
1726 struct wsm_update_ie update_ie = {
1727 .what = WSM_UPDATE_IE_BEACON,
1728 .count = 1,
1729 .ies = erp_ie,
1730 .length = 3,
1731 };
1732 u32 erp_info;
1733 __le32 use_cts_prot;
1734 mutex_lock(&priv->conf_mutex);
1735 erp_info = priv->erp_info;
1736 mutex_unlock(&priv->conf_mutex);
1737 use_cts_prot =
1738 erp_info & WLAN_ERP_USE_PROTECTION ?
1739 __cpu_to_le32(1) : 0;
1740
1741 erp_ie[ERP_INFO_BYTE_OFFSET] = erp_info;
1742
1743 pr_debug("[STA] ERP information 0x%x\n", erp_info);
1744
1745 wsm_write_mib(priv, WSM_MIB_ID_NON_ERP_PROTECTION,
1746 &use_cts_prot, sizeof(use_cts_prot));
1747 wsm_update_ie(priv, &update_ie);
1748
1749 return;
1750 }
1751
cw1200_set_btcoexinfo(struct cw1200_common * priv)1752 static int cw1200_set_btcoexinfo(struct cw1200_common *priv)
1753 {
1754 struct wsm_override_internal_txrate arg;
1755 int ret = 0;
1756
1757 if (priv->mode == NL80211_IFTYPE_STATION) {
1758 /* Plumb PSPOLL and NULL template */
1759 cw1200_upload_pspoll(priv);
1760 cw1200_upload_null(priv);
1761 cw1200_upload_qosnull(priv);
1762 } else {
1763 return 0;
1764 }
1765
1766 memset(&arg, 0, sizeof(struct wsm_override_internal_txrate));
1767
1768 if (!priv->vif->p2p) {
1769 /* STATION mode */
1770 if (priv->bss_params.operational_rate_set & ~0xF) {
1771 pr_debug("[STA] STA has ERP rates\n");
1772 /* G or BG mode */
1773 arg.internalTxRate = (__ffs(
1774 priv->bss_params.operational_rate_set & ~0xF));
1775 } else {
1776 pr_debug("[STA] STA has non ERP rates\n");
1777 /* B only mode */
1778 arg.internalTxRate = (__ffs(le32_to_cpu(priv->association_mode.basic_rate_set)));
1779 }
1780 arg.nonErpInternalTxRate = (__ffs(le32_to_cpu(priv->association_mode.basic_rate_set)));
1781 } else {
1782 /* P2P mode */
1783 arg.internalTxRate = (__ffs(priv->bss_params.operational_rate_set & ~0xF));
1784 arg.nonErpInternalTxRate = (__ffs(priv->bss_params.operational_rate_set & ~0xF));
1785 }
1786
1787 pr_debug("[STA] BTCOEX_INFO MODE %d, internalTxRate : %x, nonErpInternalTxRate: %x\n",
1788 priv->mode,
1789 arg.internalTxRate,
1790 arg.nonErpInternalTxRate);
1791
1792 ret = wsm_write_mib(priv, WSM_MIB_ID_OVERRIDE_INTERNAL_TX_RATE,
1793 &arg, sizeof(arg));
1794
1795 return ret;
1796 }
1797
cw1200_bss_info_changed(struct ieee80211_hw * dev,struct ieee80211_vif * vif,struct ieee80211_bss_conf * info,u64 changed)1798 void cw1200_bss_info_changed(struct ieee80211_hw *dev,
1799 struct ieee80211_vif *vif,
1800 struct ieee80211_bss_conf *info,
1801 u64 changed)
1802 {
1803 struct cw1200_common *priv = dev->priv;
1804 bool do_join = false;
1805
1806 mutex_lock(&priv->conf_mutex);
1807
1808 pr_debug("BSS CHANGED: %llx\n", changed);
1809
1810 /* TODO: BSS_CHANGED_QOS */
1811 /* TODO: BSS_CHANGED_TXPOWER */
1812
1813 if (changed & BSS_CHANGED_ARP_FILTER) {
1814 struct wsm_mib_arp_ipv4_filter filter = {0};
1815 int i;
1816
1817 pr_debug("[STA] BSS_CHANGED_ARP_FILTER cnt: %d\n",
1818 vif->cfg.arp_addr_cnt);
1819
1820 /* Currently only one IP address is supported by firmware.
1821 * In case of more IPs arp filtering will be disabled.
1822 */
1823 if (vif->cfg.arp_addr_cnt > 0 &&
1824 vif->cfg.arp_addr_cnt <= WSM_MAX_ARP_IP_ADDRTABLE_ENTRIES) {
1825 for (i = 0; i < vif->cfg.arp_addr_cnt; i++) {
1826 filter.ipv4addrs[i] = vif->cfg.arp_addr_list[i];
1827 pr_debug("[STA] addr[%d]: 0x%X\n",
1828 i, filter.ipv4addrs[i]);
1829 }
1830 filter.enable = __cpu_to_le32(1);
1831 }
1832
1833 pr_debug("[STA] arp ip filter enable: %d\n",
1834 __le32_to_cpu(filter.enable));
1835
1836 wsm_set_arp_ipv4_filter(priv, &filter);
1837 }
1838
1839 if (changed &
1840 (BSS_CHANGED_BEACON |
1841 BSS_CHANGED_AP_PROBE_RESP |
1842 BSS_CHANGED_BSSID |
1843 BSS_CHANGED_SSID |
1844 BSS_CHANGED_IBSS)) {
1845 pr_debug("BSS_CHANGED_BEACON\n");
1846 priv->beacon_int = info->beacon_int;
1847 cw1200_update_beaconing(priv);
1848 cw1200_upload_beacon(priv);
1849 }
1850
1851 if (changed & BSS_CHANGED_BEACON_ENABLED) {
1852 pr_debug("BSS_CHANGED_BEACON_ENABLED (%d)\n", info->enable_beacon);
1853
1854 if (priv->enable_beacon != info->enable_beacon) {
1855 cw1200_enable_beaconing(priv, info->enable_beacon);
1856 priv->enable_beacon = info->enable_beacon;
1857 }
1858 }
1859
1860 if (changed & BSS_CHANGED_BEACON_INT) {
1861 pr_debug("CHANGED_BEACON_INT\n");
1862 if (vif->cfg.ibss_joined)
1863 do_join = true;
1864 else if (priv->join_status == CW1200_JOIN_STATUS_AP)
1865 cw1200_update_beaconing(priv);
1866 }
1867
1868 /* assoc/disassoc, or maybe AID changed */
1869 if (changed & BSS_CHANGED_ASSOC) {
1870 wsm_lock_tx(priv);
1871 priv->wep_default_key_id = -1;
1872 wsm_unlock_tx(priv);
1873 }
1874
1875 if (changed & BSS_CHANGED_BSSID) {
1876 pr_debug("BSS_CHANGED_BSSID\n");
1877 do_join = true;
1878 }
1879
1880 if (changed &
1881 (BSS_CHANGED_ASSOC |
1882 BSS_CHANGED_BSSID |
1883 BSS_CHANGED_IBSS |
1884 BSS_CHANGED_BASIC_RATES |
1885 BSS_CHANGED_HT)) {
1886 pr_debug("BSS_CHANGED_ASSOC\n");
1887 if (vif->cfg.assoc) {
1888 if (priv->join_status < CW1200_JOIN_STATUS_PRE_STA) {
1889 ieee80211_connection_loss(vif);
1890 mutex_unlock(&priv->conf_mutex);
1891 return;
1892 } else if (priv->join_status == CW1200_JOIN_STATUS_PRE_STA) {
1893 priv->join_status = CW1200_JOIN_STATUS_STA;
1894 }
1895 } else {
1896 do_join = true;
1897 }
1898
1899 if (vif->cfg.assoc || vif->cfg.ibss_joined) {
1900 struct ieee80211_sta *sta = NULL;
1901 __le32 htprot = 0;
1902
1903 if (info->dtim_period)
1904 priv->join_dtim_period = info->dtim_period;
1905 priv->beacon_int = info->beacon_int;
1906
1907 rcu_read_lock();
1908
1909 if (info->bssid && !vif->cfg.ibss_joined)
1910 sta = ieee80211_find_sta(vif, info->bssid);
1911 if (sta) {
1912 priv->ht_info.ht_cap = sta->deflink.ht_cap;
1913 priv->bss_params.operational_rate_set =
1914 cw1200_rate_mask_to_wsm(priv,
1915 sta->deflink.supp_rates[priv->channel->band]);
1916 priv->ht_info.channel_type = cfg80211_get_chandef_type(&dev->conf.chandef);
1917 priv->ht_info.operation_mode = info->ht_operation_mode;
1918 } else {
1919 memset(&priv->ht_info, 0,
1920 sizeof(priv->ht_info));
1921 priv->bss_params.operational_rate_set = -1;
1922 }
1923 rcu_read_unlock();
1924
1925 /* Non Greenfield stations present */
1926 if (priv->ht_info.operation_mode &
1927 IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT)
1928 htprot |= cpu_to_le32(WSM_NON_GREENFIELD_STA_PRESENT);
1929
1930 /* Set HT protection method */
1931 htprot |= cpu_to_le32((priv->ht_info.operation_mode & IEEE80211_HT_OP_MODE_PROTECTION) << 2);
1932
1933 /* TODO:
1934 * STBC_param.dual_cts
1935 * STBC_param.LSIG_TXOP_FILL
1936 */
1937
1938 wsm_write_mib(priv, WSM_MIB_ID_SET_HT_PROTECTION,
1939 &htprot, sizeof(htprot));
1940
1941 priv->association_mode.greenfield =
1942 cw1200_ht_greenfield(&priv->ht_info);
1943 priv->association_mode.flags =
1944 WSM_ASSOCIATION_MODE_SNOOP_ASSOC_FRAMES |
1945 WSM_ASSOCIATION_MODE_USE_PREAMBLE_TYPE |
1946 WSM_ASSOCIATION_MODE_USE_HT_MODE |
1947 WSM_ASSOCIATION_MODE_USE_BASIC_RATE_SET |
1948 WSM_ASSOCIATION_MODE_USE_MPDU_START_SPACING;
1949 priv->association_mode.preamble =
1950 info->use_short_preamble ?
1951 WSM_JOIN_PREAMBLE_SHORT :
1952 WSM_JOIN_PREAMBLE_LONG;
1953 priv->association_mode.basic_rate_set = __cpu_to_le32(
1954 cw1200_rate_mask_to_wsm(priv,
1955 info->basic_rates));
1956 priv->association_mode.mpdu_start_spacing =
1957 cw1200_ht_ampdu_density(&priv->ht_info);
1958
1959 cw1200_cqm_bssloss_sm(priv, 0, 0, 0);
1960 cancel_work_sync(&priv->unjoin_work);
1961
1962 priv->bss_params.beacon_lost_count = priv->cqm_beacon_loss_count;
1963 priv->bss_params.aid = vif->cfg.aid;
1964
1965 if (priv->join_dtim_period < 1)
1966 priv->join_dtim_period = 1;
1967
1968 pr_debug("[STA] DTIM %d, interval: %d\n",
1969 priv->join_dtim_period, priv->beacon_int);
1970 pr_debug("[STA] Preamble: %d, Greenfield: %d, Aid: %d, Rates: 0x%.8X, Basic: 0x%.8X\n",
1971 priv->association_mode.preamble,
1972 priv->association_mode.greenfield,
1973 priv->bss_params.aid,
1974 priv->bss_params.operational_rate_set,
1975 priv->association_mode.basic_rate_set);
1976 wsm_set_association_mode(priv, &priv->association_mode);
1977
1978 if (!vif->cfg.ibss_joined) {
1979 wsm_keep_alive_period(priv, 30 /* sec */);
1980 wsm_set_bss_params(priv, &priv->bss_params);
1981 priv->setbssparams_done = true;
1982 cw1200_set_beacon_wakeup_period_work(&priv->set_beacon_wakeup_period_work);
1983 cw1200_set_pm(priv, &priv->powersave_mode);
1984 }
1985 if (priv->vif->p2p) {
1986 pr_debug("[STA] Setting p2p powersave configuration.\n");
1987 wsm_set_p2p_ps_modeinfo(priv,
1988 &priv->p2p_ps_modeinfo);
1989 }
1990 if (priv->bt_present)
1991 cw1200_set_btcoexinfo(priv);
1992 } else {
1993 memset(&priv->association_mode, 0,
1994 sizeof(priv->association_mode));
1995 memset(&priv->bss_params, 0, sizeof(priv->bss_params));
1996 }
1997 }
1998
1999 /* ERP Protection */
2000 if (changed & (BSS_CHANGED_ASSOC |
2001 BSS_CHANGED_ERP_CTS_PROT |
2002 BSS_CHANGED_ERP_PREAMBLE)) {
2003 u32 prev_erp_info = priv->erp_info;
2004 if (info->use_cts_prot)
2005 priv->erp_info |= WLAN_ERP_USE_PROTECTION;
2006 else if (!(prev_erp_info & WLAN_ERP_NON_ERP_PRESENT))
2007 priv->erp_info &= ~WLAN_ERP_USE_PROTECTION;
2008
2009 if (info->use_short_preamble)
2010 priv->erp_info |= WLAN_ERP_BARKER_PREAMBLE;
2011 else
2012 priv->erp_info &= ~WLAN_ERP_BARKER_PREAMBLE;
2013
2014 pr_debug("[STA] ERP Protection: %x\n", priv->erp_info);
2015
2016 if (prev_erp_info != priv->erp_info)
2017 queue_work(priv->workqueue, &priv->set_cts_work);
2018 }
2019
2020 /* ERP Slottime */
2021 if (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_ERP_SLOT)) {
2022 __le32 slot_time = info->use_short_slot ?
2023 __cpu_to_le32(9) : __cpu_to_le32(20);
2024 pr_debug("[STA] Slot time: %d us.\n",
2025 __le32_to_cpu(slot_time));
2026 wsm_write_mib(priv, WSM_MIB_ID_DOT11_SLOT_TIME,
2027 &slot_time, sizeof(slot_time));
2028 }
2029
2030 if (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_CQM)) {
2031 struct wsm_rcpi_rssi_threshold threshold = {
2032 .rollingAverageCount = 8,
2033 };
2034 pr_debug("[CQM] RSSI threshold subscribe: %d +- %d\n",
2035 info->cqm_rssi_thold, info->cqm_rssi_hyst);
2036 priv->cqm_rssi_thold = info->cqm_rssi_thold;
2037 priv->cqm_rssi_hyst = info->cqm_rssi_hyst;
2038
2039 if (info->cqm_rssi_thold || info->cqm_rssi_hyst) {
2040 /* RSSI subscription enabled */
2041 /* TODO: It's not a correct way of setting threshold.
2042 * Upper and lower must be set equal here and adjusted
2043 * in callback. However current implementation is much
2044 * more relaible and stable.
2045 */
2046
2047 /* RSSI: signed Q8.0, RCPI: unsigned Q7.1
2048 * RSSI = RCPI / 2 - 110
2049 */
2050 if (priv->cqm_use_rssi) {
2051 threshold.upperThreshold =
2052 info->cqm_rssi_thold + info->cqm_rssi_hyst;
2053 threshold.lowerThreshold =
2054 info->cqm_rssi_thold;
2055 threshold.rssiRcpiMode |= WSM_RCPI_RSSI_USE_RSSI;
2056 } else {
2057 threshold.upperThreshold = (info->cqm_rssi_thold + info->cqm_rssi_hyst + 110) * 2;
2058 threshold.lowerThreshold = (info->cqm_rssi_thold + 110) * 2;
2059 }
2060 threshold.rssiRcpiMode |= WSM_RCPI_RSSI_THRESHOLD_ENABLE;
2061 } else {
2062 /* There is a bug in FW, see sta.c. We have to enable
2063 * dummy subscription to get correct RSSI values.
2064 */
2065 threshold.rssiRcpiMode |=
2066 WSM_RCPI_RSSI_THRESHOLD_ENABLE |
2067 WSM_RCPI_RSSI_DONT_USE_UPPER |
2068 WSM_RCPI_RSSI_DONT_USE_LOWER;
2069 if (priv->cqm_use_rssi)
2070 threshold.rssiRcpiMode |= WSM_RCPI_RSSI_USE_RSSI;
2071 }
2072 wsm_set_rcpi_rssi_threshold(priv, &threshold);
2073 }
2074 mutex_unlock(&priv->conf_mutex);
2075
2076 if (do_join) {
2077 wsm_lock_tx(priv);
2078 cw1200_do_join(priv); /* Will unlock it for us */
2079 }
2080 }
2081
cw1200_multicast_start_work(struct work_struct * work)2082 void cw1200_multicast_start_work(struct work_struct *work)
2083 {
2084 struct cw1200_common *priv =
2085 container_of(work, struct cw1200_common, multicast_start_work);
2086 long tmo = priv->join_dtim_period *
2087 (priv->beacon_int + 20) * HZ / 1024;
2088
2089 cancel_work_sync(&priv->multicast_stop_work);
2090
2091 if (!priv->aid0_bit_set) {
2092 wsm_lock_tx(priv);
2093 cw1200_set_tim_impl(priv, true);
2094 priv->aid0_bit_set = true;
2095 mod_timer(&priv->mcast_timeout, jiffies + tmo);
2096 wsm_unlock_tx(priv);
2097 }
2098 }
2099
cw1200_multicast_stop_work(struct work_struct * work)2100 void cw1200_multicast_stop_work(struct work_struct *work)
2101 {
2102 struct cw1200_common *priv =
2103 container_of(work, struct cw1200_common, multicast_stop_work);
2104
2105 if (priv->aid0_bit_set) {
2106 timer_delete_sync(&priv->mcast_timeout);
2107 wsm_lock_tx(priv);
2108 priv->aid0_bit_set = false;
2109 cw1200_set_tim_impl(priv, false);
2110 wsm_unlock_tx(priv);
2111 }
2112 }
2113
cw1200_mcast_timeout(struct timer_list * t)2114 void cw1200_mcast_timeout(struct timer_list *t)
2115 {
2116 struct cw1200_common *priv = timer_container_of(priv, t,
2117 mcast_timeout);
2118
2119 wiphy_warn(priv->hw->wiphy,
2120 "Multicast delivery timeout.\n");
2121 spin_lock_bh(&priv->ps_state_lock);
2122 priv->tx_multicast = priv->aid0_bit_set &&
2123 priv->buffered_multicasts;
2124 if (priv->tx_multicast)
2125 cw1200_bh_wakeup(priv);
2126 spin_unlock_bh(&priv->ps_state_lock);
2127 }
2128
cw1200_ampdu_action(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_ampdu_params * params)2129 int cw1200_ampdu_action(struct ieee80211_hw *hw,
2130 struct ieee80211_vif *vif,
2131 struct ieee80211_ampdu_params *params)
2132 {
2133 /* Aggregation is implemented fully in firmware,
2134 * including block ack negotiation. Do not allow
2135 * mac80211 stack to do anything: it interferes with
2136 * the firmware.
2137 */
2138
2139 /* Note that we still need this function stubbed. */
2140 return -ENOTSUPP;
2141 }
2142
2143 /* ******************************************************************** */
2144 /* WSM callback */
cw1200_suspend_resume(struct cw1200_common * priv,struct wsm_suspend_resume * arg)2145 void cw1200_suspend_resume(struct cw1200_common *priv,
2146 struct wsm_suspend_resume *arg)
2147 {
2148 pr_debug("[AP] %s: %s\n",
2149 arg->stop ? "stop" : "start",
2150 arg->multicast ? "broadcast" : "unicast");
2151
2152 if (arg->multicast) {
2153 bool cancel_tmo = false;
2154 spin_lock_bh(&priv->ps_state_lock);
2155 if (arg->stop) {
2156 priv->tx_multicast = false;
2157 } else {
2158 /* Firmware sends this indication every DTIM if there
2159 * is a STA in powersave connected. There is no reason
2160 * to suspend, following wakeup will consume much more
2161 * power than it could be saved.
2162 */
2163 cw1200_pm_stay_awake(&priv->pm_state,
2164 priv->join_dtim_period *
2165 (priv->beacon_int + 20) * HZ / 1024);
2166 priv->tx_multicast = (priv->aid0_bit_set &&
2167 priv->buffered_multicasts);
2168 if (priv->tx_multicast) {
2169 cancel_tmo = true;
2170 cw1200_bh_wakeup(priv);
2171 }
2172 }
2173 spin_unlock_bh(&priv->ps_state_lock);
2174 if (cancel_tmo)
2175 timer_delete_sync(&priv->mcast_timeout);
2176 } else {
2177 spin_lock_bh(&priv->ps_state_lock);
2178 cw1200_ps_notify(priv, arg->link_id, arg->stop);
2179 spin_unlock_bh(&priv->ps_state_lock);
2180 if (!arg->stop)
2181 cw1200_bh_wakeup(priv);
2182 }
2183 return;
2184 }
2185
2186 /* ******************************************************************** */
2187 /* AP privates */
2188
cw1200_upload_beacon(struct cw1200_common * priv)2189 static int cw1200_upload_beacon(struct cw1200_common *priv)
2190 {
2191 int ret = 0;
2192 struct ieee80211_mgmt *mgmt;
2193 struct wsm_template_frame frame = {
2194 .frame_type = WSM_FRAME_TYPE_BEACON,
2195 };
2196
2197 u16 tim_offset;
2198 u16 tim_len;
2199
2200 if (priv->mode == NL80211_IFTYPE_STATION ||
2201 priv->mode == NL80211_IFTYPE_MONITOR ||
2202 priv->mode == NL80211_IFTYPE_UNSPECIFIED)
2203 goto done;
2204
2205 if (priv->vif->p2p)
2206 frame.rate = WSM_TRANSMIT_RATE_6;
2207
2208 frame.skb = ieee80211_beacon_get_tim(priv->hw, priv->vif,
2209 &tim_offset, &tim_len, 0);
2210 if (!frame.skb)
2211 return -ENOMEM;
2212
2213 ret = wsm_set_template_frame(priv, &frame);
2214
2215 if (ret)
2216 goto done;
2217
2218 /* TODO: Distill probe resp; remove TIM
2219 * and any other beacon-specific IEs
2220 */
2221 mgmt = (void *)frame.skb->data;
2222 mgmt->frame_control =
2223 __cpu_to_le16(IEEE80211_FTYPE_MGMT |
2224 IEEE80211_STYPE_PROBE_RESP);
2225
2226 frame.frame_type = WSM_FRAME_TYPE_PROBE_RESPONSE;
2227 if (priv->vif->p2p) {
2228 ret = wsm_set_probe_responder(priv, true);
2229 } else {
2230 ret = wsm_set_template_frame(priv, &frame);
2231 wsm_set_probe_responder(priv, false);
2232 }
2233
2234 done:
2235 dev_kfree_skb(frame.skb);
2236
2237 return ret;
2238 }
2239
cw1200_upload_pspoll(struct cw1200_common * priv)2240 static int cw1200_upload_pspoll(struct cw1200_common *priv)
2241 {
2242 int ret = 0;
2243 struct wsm_template_frame frame = {
2244 .frame_type = WSM_FRAME_TYPE_PS_POLL,
2245 .rate = 0xFF,
2246 };
2247
2248
2249 frame.skb = ieee80211_pspoll_get(priv->hw, priv->vif);
2250 if (!frame.skb)
2251 return -ENOMEM;
2252
2253 ret = wsm_set_template_frame(priv, &frame);
2254
2255 dev_kfree_skb(frame.skb);
2256
2257 return ret;
2258 }
2259
cw1200_upload_null(struct cw1200_common * priv)2260 static int cw1200_upload_null(struct cw1200_common *priv)
2261 {
2262 int ret = 0;
2263 struct wsm_template_frame frame = {
2264 .frame_type = WSM_FRAME_TYPE_NULL,
2265 .rate = 0xFF,
2266 };
2267
2268 frame.skb = ieee80211_nullfunc_get(priv->hw, priv->vif,-1, false);
2269 if (!frame.skb)
2270 return -ENOMEM;
2271
2272 ret = wsm_set_template_frame(priv, &frame);
2273
2274 dev_kfree_skb(frame.skb);
2275
2276 return ret;
2277 }
2278
cw1200_upload_qosnull(struct cw1200_common * priv)2279 static int cw1200_upload_qosnull(struct cw1200_common *priv)
2280 {
2281 /* TODO: This needs to be implemented
2282
2283 struct wsm_template_frame frame = {
2284 .frame_type = WSM_FRAME_TYPE_QOS_NULL,
2285 .rate = 0xFF,
2286 };
2287
2288 frame.skb = ieee80211_qosnullfunc_get(priv->hw, priv->vif);
2289 if (!frame.skb)
2290 return -ENOMEM;
2291
2292 ret = wsm_set_template_frame(priv, &frame);
2293
2294 dev_kfree_skb(frame.skb);
2295
2296 */
2297 return 0;
2298 }
2299
cw1200_enable_beaconing(struct cw1200_common * priv,bool enable)2300 static int cw1200_enable_beaconing(struct cw1200_common *priv,
2301 bool enable)
2302 {
2303 struct wsm_beacon_transmit transmit = {
2304 .enable_beaconing = enable,
2305 };
2306
2307 return wsm_beacon_transmit(priv, &transmit);
2308 }
2309
cw1200_start_ap(struct cw1200_common * priv)2310 static int cw1200_start_ap(struct cw1200_common *priv)
2311 {
2312 int ret;
2313 struct ieee80211_bss_conf *conf = &priv->vif->bss_conf;
2314 struct wsm_start start = {
2315 .mode = priv->vif->p2p ?
2316 WSM_START_MODE_P2P_GO : WSM_START_MODE_AP,
2317 .band = (priv->channel->band == NL80211_BAND_5GHZ) ?
2318 WSM_PHY_BAND_5G : WSM_PHY_BAND_2_4G,
2319 .channel_number = priv->channel->hw_value,
2320 .beacon_interval = conf->beacon_int,
2321 .dtim_period = conf->dtim_period,
2322 .preamble = conf->use_short_preamble ?
2323 WSM_JOIN_PREAMBLE_SHORT :
2324 WSM_JOIN_PREAMBLE_LONG,
2325 .probe_delay = 100,
2326 .basic_rate_set = cw1200_rate_mask_to_wsm(priv,
2327 conf->basic_rates),
2328 };
2329 struct wsm_operational_mode mode = {
2330 .power_mode = cw1200_power_mode,
2331 .disable_more_flag_usage = true,
2332 };
2333
2334 memset(start.ssid, 0, sizeof(start.ssid));
2335 if (!conf->hidden_ssid) {
2336 start.ssid_len = priv->vif->cfg.ssid_len;
2337 memcpy(start.ssid, priv->vif->cfg.ssid, start.ssid_len);
2338 }
2339
2340 priv->beacon_int = conf->beacon_int;
2341 priv->join_dtim_period = conf->dtim_period;
2342
2343 memset(&priv->link_id_db, 0, sizeof(priv->link_id_db));
2344
2345 pr_debug("[AP] ch: %d(%d), bcn: %d(%d), brt: 0x%.8X, ssid: %.*s.\n",
2346 start.channel_number, start.band,
2347 start.beacon_interval, start.dtim_period,
2348 start.basic_rate_set,
2349 start.ssid_len, start.ssid);
2350 ret = wsm_start(priv, &start);
2351 if (!ret)
2352 ret = cw1200_upload_keys(priv);
2353 if (!ret && priv->vif->p2p) {
2354 pr_debug("[AP] Setting p2p powersave configuration.\n");
2355 wsm_set_p2p_ps_modeinfo(priv, &priv->p2p_ps_modeinfo);
2356 }
2357 if (!ret) {
2358 wsm_set_block_ack_policy(priv, 0, 0);
2359 priv->join_status = CW1200_JOIN_STATUS_AP;
2360 cw1200_update_filtering(priv);
2361 }
2362 wsm_set_operational_mode(priv, &mode);
2363 return ret;
2364 }
2365
cw1200_update_beaconing(struct cw1200_common * priv)2366 static int cw1200_update_beaconing(struct cw1200_common *priv)
2367 {
2368 struct ieee80211_bss_conf *conf = &priv->vif->bss_conf;
2369 struct wsm_reset reset = {
2370 .link_id = 0,
2371 .reset_statistics = true,
2372 };
2373
2374 if (priv->mode == NL80211_IFTYPE_AP) {
2375 /* TODO: check if changed channel, band */
2376 if (priv->join_status != CW1200_JOIN_STATUS_AP ||
2377 priv->beacon_int != conf->beacon_int) {
2378 pr_debug("ap restarting\n");
2379 wsm_lock_tx(priv);
2380 if (priv->join_status != CW1200_JOIN_STATUS_PASSIVE)
2381 wsm_reset(priv, &reset);
2382 priv->join_status = CW1200_JOIN_STATUS_PASSIVE;
2383 cw1200_start_ap(priv);
2384 wsm_unlock_tx(priv);
2385 } else
2386 pr_debug("ap started join_status: %d\n",
2387 priv->join_status);
2388 }
2389 return 0;
2390 }
2391