Commit | Line | Data |
---|---|---|
a910e4a9 SP |
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> | |
35df5388 | 16 | #include <linux/etherdevice.h> |
a910e4a9 SP |
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 | ||
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 | ||
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 | ||
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 | ||
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 | ||
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_CQM_RSSI; | |
217 | ||
218 | mutex_lock(&priv->conf_mutex); | |
219 | ||
220 | if (priv->mode != NL80211_IFTYPE_MONITOR) { | |
221 | mutex_unlock(&priv->conf_mutex); | |
222 | return -EOPNOTSUPP; | |
223 | } | |
224 | ||
225 | switch (vif->type) { | |
226 | case NL80211_IFTYPE_STATION: | |
227 | case NL80211_IFTYPE_ADHOC: | |
228 | case NL80211_IFTYPE_MESH_POINT: | |
229 | case NL80211_IFTYPE_AP: | |
230 | priv->mode = vif->type; | |
231 | break; | |
232 | default: | |
233 | mutex_unlock(&priv->conf_mutex); | |
234 | return -EOPNOTSUPP; | |
235 | } | |
236 | ||
237 | priv->vif = vif; | |
238 | memcpy(priv->mac_addr, vif->addr, ETH_ALEN); | |
239 | ret = cw1200_setup_mac(priv); | |
240 | /* Enable auto-calibration */ | |
241 | /* Exception in subsequent channel switch; disabled. | |
242 | * wsm_write_mib(priv, WSM_MIB_ID_SET_AUTO_CALIBRATION_MODE, | |
243 | * &auto_calibration_mode, sizeof(auto_calibration_mode)); | |
244 | */ | |
245 | ||
246 | mutex_unlock(&priv->conf_mutex); | |
247 | return ret; | |
248 | } | |
249 | ||
250 | void cw1200_remove_interface(struct ieee80211_hw *dev, | |
251 | struct ieee80211_vif *vif) | |
252 | { | |
253 | struct cw1200_common *priv = dev->priv; | |
254 | struct wsm_reset reset = { | |
255 | .reset_statistics = true, | |
256 | }; | |
257 | int i; | |
258 | ||
259 | mutex_lock(&priv->conf_mutex); | |
260 | switch (priv->join_status) { | |
261 | case CW1200_JOIN_STATUS_JOINING: | |
262 | case CW1200_JOIN_STATUS_PRE_STA: | |
263 | case CW1200_JOIN_STATUS_STA: | |
264 | case CW1200_JOIN_STATUS_IBSS: | |
265 | wsm_lock_tx(priv); | |
266 | if (queue_work(priv->workqueue, &priv->unjoin_work) <= 0) | |
267 | wsm_unlock_tx(priv); | |
268 | break; | |
269 | case CW1200_JOIN_STATUS_AP: | |
270 | for (i = 0; priv->link_id_map; ++i) { | |
271 | if (priv->link_id_map & BIT(i)) { | |
272 | reset.link_id = i; | |
273 | wsm_reset(priv, &reset); | |
274 | priv->link_id_map &= ~BIT(i); | |
275 | } | |
276 | } | |
277 | memset(priv->link_id_db, 0, sizeof(priv->link_id_db)); | |
278 | priv->sta_asleep_mask = 0; | |
279 | priv->enable_beacon = false; | |
280 | priv->tx_multicast = false; | |
281 | priv->aid0_bit_set = false; | |
282 | priv->buffered_multicasts = false; | |
283 | priv->pspoll_mask = 0; | |
284 | reset.link_id = 0; | |
285 | wsm_reset(priv, &reset); | |
286 | break; | |
287 | case CW1200_JOIN_STATUS_MONITOR: | |
288 | cw1200_update_listening(priv, false); | |
289 | break; | |
290 | default: | |
291 | break; | |
292 | } | |
293 | priv->vif = NULL; | |
294 | priv->mode = NL80211_IFTYPE_MONITOR; | |
295 | memset(priv->mac_addr, 0, ETH_ALEN); | |
296 | memset(&priv->p2p_ps_modeinfo, 0, sizeof(priv->p2p_ps_modeinfo)); | |
297 | cw1200_free_keys(priv); | |
298 | cw1200_setup_mac(priv); | |
299 | priv->listening = false; | |
300 | priv->join_status = CW1200_JOIN_STATUS_PASSIVE; | |
301 | if (!__cw1200_flush(priv, true)) | |
302 | wsm_unlock_tx(priv); | |
303 | ||
304 | mutex_unlock(&priv->conf_mutex); | |
305 | } | |
306 | ||
307 | int cw1200_change_interface(struct ieee80211_hw *dev, | |
308 | struct ieee80211_vif *vif, | |
309 | enum nl80211_iftype new_type, | |
310 | bool p2p) | |
311 | { | |
312 | int ret = 0; | |
313 | pr_debug("change_interface new: %d (%d), old: %d (%d)\n", new_type, | |
314 | p2p, vif->type, vif->p2p); | |
315 | ||
316 | if (new_type != vif->type || vif->p2p != p2p) { | |
317 | cw1200_remove_interface(dev, vif); | |
318 | vif->type = new_type; | |
319 | vif->p2p = p2p; | |
320 | ret = cw1200_add_interface(dev, vif); | |
321 | } | |
322 | ||
323 | return ret; | |
324 | } | |
325 | ||
326 | int cw1200_config(struct ieee80211_hw *dev, u32 changed) | |
327 | { | |
328 | int ret = 0; | |
329 | struct cw1200_common *priv = dev->priv; | |
330 | struct ieee80211_conf *conf = &dev->conf; | |
331 | ||
332 | pr_debug("CONFIG CHANGED: %08x\n", changed); | |
333 | ||
334 | down(&priv->scan.lock); | |
335 | mutex_lock(&priv->conf_mutex); | |
336 | /* TODO: IEEE80211_CONF_CHANGE_QOS */ | |
337 | /* TODO: IEEE80211_CONF_CHANGE_LISTEN_INTERVAL */ | |
338 | ||
339 | if (changed & IEEE80211_CONF_CHANGE_POWER) { | |
340 | priv->output_power = conf->power_level; | |
341 | pr_debug("[STA] TX power: %d\n", priv->output_power); | |
342 | wsm_set_output_power(priv, priv->output_power * 10); | |
343 | } | |
344 | ||
345 | if ((changed & IEEE80211_CONF_CHANGE_CHANNEL) && | |
346 | (priv->channel != conf->chandef.chan)) { | |
347 | struct ieee80211_channel *ch = conf->chandef.chan; | |
348 | struct wsm_switch_channel channel = { | |
349 | .channel_number = ch->hw_value, | |
350 | }; | |
351 | pr_debug("[STA] Freq %d (wsm ch: %d).\n", | |
352 | ch->center_freq, ch->hw_value); | |
353 | ||
354 | /* __cw1200_flush() implicitly locks tx, if successful */ | |
355 | if (!__cw1200_flush(priv, false)) { | |
356 | if (!wsm_switch_channel(priv, &channel)) { | |
357 | ret = wait_event_timeout(priv->channel_switch_done, | |
358 | !priv->channel_switch_in_progress, | |
359 | 3 * HZ); | |
360 | if (ret) { | |
361 | /* Already unlocks if successful */ | |
362 | priv->channel = ch; | |
363 | ret = 0; | |
364 | } else { | |
365 | ret = -ETIMEDOUT; | |
366 | } | |
367 | } else { | |
368 | /* Unlock if switch channel fails */ | |
369 | wsm_unlock_tx(priv); | |
370 | } | |
371 | } | |
372 | } | |
373 | ||
374 | if (changed & IEEE80211_CONF_CHANGE_PS) { | |
375 | if (!(conf->flags & IEEE80211_CONF_PS)) | |
376 | priv->powersave_mode.mode = WSM_PSM_ACTIVE; | |
377 | else if (conf->dynamic_ps_timeout <= 0) | |
378 | priv->powersave_mode.mode = WSM_PSM_PS; | |
379 | else | |
380 | priv->powersave_mode.mode = WSM_PSM_FAST_PS; | |
381 | ||
382 | /* Firmware requires that value for this 1-byte field must | |
383 | * be specified in units of 500us. Values above the 128ms | |
384 | * threshold are not supported. | |
385 | */ | |
386 | if (conf->dynamic_ps_timeout >= 0x80) | |
387 | priv->powersave_mode.fast_psm_idle_period = 0xFF; | |
388 | else | |
389 | priv->powersave_mode.fast_psm_idle_period = | |
390 | conf->dynamic_ps_timeout << 1; | |
391 | ||
392 | if (priv->join_status == CW1200_JOIN_STATUS_STA && | |
393 | priv->bss_params.aid) | |
394 | cw1200_set_pm(priv, &priv->powersave_mode); | |
395 | } | |
396 | ||
397 | if (changed & IEEE80211_CONF_CHANGE_MONITOR) { | |
398 | /* TBD: It looks like it's transparent | |
399 | * there's a monitor interface present -- use this | |
400 | * to determine for example whether to calculate | |
401 | * timestamps for packets or not, do not use instead | |
402 | * of filter flags! | |
403 | */ | |
404 | } | |
405 | ||
406 | if (changed & IEEE80211_CONF_CHANGE_IDLE) { | |
407 | struct wsm_operational_mode mode = { | |
408 | .power_mode = cw1200_power_mode, | |
409 | .disable_more_flag_usage = true, | |
410 | }; | |
411 | ||
412 | wsm_lock_tx(priv); | |
413 | /* Disable p2p-dev mode forced by TX request */ | |
414 | if ((priv->join_status == CW1200_JOIN_STATUS_MONITOR) && | |
415 | (conf->flags & IEEE80211_CONF_IDLE) && | |
416 | !priv->listening) { | |
417 | cw1200_disable_listening(priv); | |
418 | priv->join_status = CW1200_JOIN_STATUS_PASSIVE; | |
419 | } | |
420 | wsm_set_operational_mode(priv, &mode); | |
421 | wsm_unlock_tx(priv); | |
422 | } | |
423 | ||
424 | if (changed & IEEE80211_CONF_CHANGE_RETRY_LIMITS) { | |
425 | pr_debug("[STA] Retry limits: %d (long), %d (short).\n", | |
426 | conf->long_frame_max_tx_count, | |
427 | conf->short_frame_max_tx_count); | |
428 | spin_lock_bh(&priv->tx_policy_cache.lock); | |
429 | priv->long_frame_max_tx_count = conf->long_frame_max_tx_count; | |
430 | priv->short_frame_max_tx_count = | |
431 | (conf->short_frame_max_tx_count < 0x0F) ? | |
432 | conf->short_frame_max_tx_count : 0x0F; | |
433 | priv->hw->max_rate_tries = priv->short_frame_max_tx_count; | |
434 | spin_unlock_bh(&priv->tx_policy_cache.lock); | |
435 | } | |
436 | mutex_unlock(&priv->conf_mutex); | |
437 | up(&priv->scan.lock); | |
438 | return ret; | |
439 | } | |
440 | ||
441 | void cw1200_update_filtering(struct cw1200_common *priv) | |
442 | { | |
443 | int ret; | |
444 | bool bssid_filtering = !priv->rx_filter.bssid; | |
445 | bool is_p2p = priv->vif && priv->vif->p2p; | |
446 | bool is_sta = priv->vif && NL80211_IFTYPE_STATION == priv->vif->type; | |
447 | ||
448 | static struct wsm_beacon_filter_control bf_ctrl; | |
449 | static struct wsm_mib_beacon_filter_table bf_tbl = { | |
450 | .entry[0].ie_id = WLAN_EID_VENDOR_SPECIFIC, | |
451 | .entry[0].flags = WSM_BEACON_FILTER_IE_HAS_CHANGED | | |
452 | WSM_BEACON_FILTER_IE_NO_LONGER_PRESENT | | |
453 | WSM_BEACON_FILTER_IE_HAS_APPEARED, | |
454 | .entry[0].oui[0] = 0x50, | |
455 | .entry[0].oui[1] = 0x6F, | |
456 | .entry[0].oui[2] = 0x9A, | |
457 | .entry[1].ie_id = WLAN_EID_HT_OPERATION, | |
458 | .entry[1].flags = WSM_BEACON_FILTER_IE_HAS_CHANGED | | |
459 | WSM_BEACON_FILTER_IE_NO_LONGER_PRESENT | | |
460 | WSM_BEACON_FILTER_IE_HAS_APPEARED, | |
461 | .entry[2].ie_id = WLAN_EID_ERP_INFO, | |
462 | .entry[2].flags = WSM_BEACON_FILTER_IE_HAS_CHANGED | | |
463 | WSM_BEACON_FILTER_IE_NO_LONGER_PRESENT | | |
464 | WSM_BEACON_FILTER_IE_HAS_APPEARED, | |
465 | }; | |
466 | ||
467 | if (priv->join_status == CW1200_JOIN_STATUS_PASSIVE) | |
468 | return; | |
469 | else if (priv->join_status == CW1200_JOIN_STATUS_MONITOR) | |
470 | bssid_filtering = false; | |
471 | ||
472 | if (priv->disable_beacon_filter) { | |
473 | bf_ctrl.enabled = 0; | |
474 | bf_ctrl.bcn_count = 1; | |
475 | bf_tbl.num = __cpu_to_le32(0); | |
476 | } else if (is_p2p || !is_sta) { | |
477 | bf_ctrl.enabled = WSM_BEACON_FILTER_ENABLE | | |
478 | WSM_BEACON_FILTER_AUTO_ERP; | |
479 | bf_ctrl.bcn_count = 0; | |
480 | bf_tbl.num = __cpu_to_le32(2); | |
481 | } else { | |
482 | bf_ctrl.enabled = WSM_BEACON_FILTER_ENABLE; | |
483 | bf_ctrl.bcn_count = 0; | |
484 | bf_tbl.num = __cpu_to_le32(3); | |
485 | } | |
486 | ||
8b3e7be4 SP |
487 | /* When acting as p2p client being connected to p2p GO, in order to |
488 | * receive frames from a different p2p device, turn off bssid filter. | |
489 | * | |
490 | * WARNING: FW dependency! | |
491 | * This can only be used with FW WSM371 and its successors. | |
492 | * In that FW version even with bssid filter turned off, | |
493 | * device will block most of the unwanted frames. | |
494 | */ | |
a910e4a9 SP |
495 | if (is_p2p) |
496 | bssid_filtering = false; | |
497 | ||
498 | ret = wsm_set_rx_filter(priv, &priv->rx_filter); | |
499 | if (!ret) | |
500 | ret = wsm_set_beacon_filter_table(priv, &bf_tbl); | |
501 | if (!ret) | |
502 | ret = wsm_beacon_filter_control(priv, &bf_ctrl); | |
503 | if (!ret) | |
504 | ret = wsm_set_bssid_filtering(priv, bssid_filtering); | |
505 | if (!ret) | |
506 | ret = wsm_set_multicast_filter(priv, &priv->multicast_filter); | |
507 | if (ret) | |
508 | wiphy_err(priv->hw->wiphy, | |
509 | "Update filtering failed: %d.\n", ret); | |
510 | return; | |
511 | } | |
512 | ||
513 | void cw1200_update_filtering_work(struct work_struct *work) | |
514 | { | |
515 | struct cw1200_common *priv = | |
516 | container_of(work, struct cw1200_common, | |
517 | update_filtering_work); | |
518 | ||
519 | cw1200_update_filtering(priv); | |
520 | } | |
521 | ||
522 | void cw1200_set_beacon_wakeup_period_work(struct work_struct *work) | |
523 | { | |
524 | struct cw1200_common *priv = | |
525 | container_of(work, struct cw1200_common, | |
526 | set_beacon_wakeup_period_work); | |
527 | ||
528 | wsm_set_beacon_wakeup_period(priv, | |
529 | priv->beacon_int * priv->join_dtim_period > | |
530 | MAX_BEACON_SKIP_TIME_MS ? 1 : | |
531 | priv->join_dtim_period, 0); | |
532 | } | |
533 | ||
534 | u64 cw1200_prepare_multicast(struct ieee80211_hw *hw, | |
535 | struct netdev_hw_addr_list *mc_list) | |
536 | { | |
537 | static u8 broadcast_ipv6[ETH_ALEN] = { | |
538 | 0x33, 0x33, 0x00, 0x00, 0x00, 0x01 | |
539 | }; | |
540 | static u8 broadcast_ipv4[ETH_ALEN] = { | |
541 | 0x01, 0x00, 0x5e, 0x00, 0x00, 0x01 | |
542 | }; | |
543 | struct cw1200_common *priv = hw->priv; | |
544 | struct netdev_hw_addr *ha; | |
545 | int count = 0; | |
546 | ||
547 | /* Disable multicast filtering */ | |
548 | priv->has_multicast_subscription = false; | |
549 | memset(&priv->multicast_filter, 0x00, sizeof(priv->multicast_filter)); | |
550 | ||
551 | if (netdev_hw_addr_list_count(mc_list) > WSM_MAX_GRP_ADDRTABLE_ENTRIES) | |
552 | return 0; | |
553 | ||
554 | /* Enable if requested */ | |
555 | netdev_hw_addr_list_for_each(ha, mc_list) { | |
556 | pr_debug("[STA] multicast: %pM\n", ha->addr); | |
557 | memcpy(&priv->multicast_filter.macaddrs[count], | |
558 | ha->addr, ETH_ALEN); | |
35df5388 | 559 | if (!ether_addr_equal(ha->addr, broadcast_ipv4) && |
560 | !ether_addr_equal(ha->addr, broadcast_ipv6)) | |
a910e4a9 SP |
561 | priv->has_multicast_subscription = true; |
562 | count++; | |
563 | } | |
564 | ||
565 | if (count) { | |
566 | priv->multicast_filter.enable = __cpu_to_le32(1); | |
567 | priv->multicast_filter.num_addrs = __cpu_to_le32(count); | |
568 | } | |
569 | ||
570 | return netdev_hw_addr_list_count(mc_list); | |
571 | } | |
572 | ||
573 | void cw1200_configure_filter(struct ieee80211_hw *dev, | |
574 | unsigned int changed_flags, | |
575 | unsigned int *total_flags, | |
576 | u64 multicast) | |
577 | { | |
578 | struct cw1200_common *priv = dev->priv; | |
579 | bool listening = !!(*total_flags & | |
580 | (FIF_PROMISC_IN_BSS | | |
581 | FIF_OTHER_BSS | | |
582 | FIF_BCN_PRBRESP_PROMISC | | |
583 | FIF_PROBE_REQ)); | |
584 | ||
585 | *total_flags &= FIF_PROMISC_IN_BSS | | |
586 | FIF_OTHER_BSS | | |
587 | FIF_FCSFAIL | | |
588 | FIF_BCN_PRBRESP_PROMISC | | |
589 | FIF_PROBE_REQ; | |
590 | ||
591 | down(&priv->scan.lock); | |
592 | mutex_lock(&priv->conf_mutex); | |
593 | ||
594 | priv->rx_filter.promiscuous = (*total_flags & FIF_PROMISC_IN_BSS) | |
595 | ? 1 : 0; | |
596 | priv->rx_filter.bssid = (*total_flags & (FIF_OTHER_BSS | | |
597 | FIF_PROBE_REQ)) ? 1 : 0; | |
598 | priv->rx_filter.fcs = (*total_flags & FIF_FCSFAIL) ? 1 : 0; | |
599 | priv->disable_beacon_filter = !(*total_flags & | |
600 | (FIF_BCN_PRBRESP_PROMISC | | |
601 | FIF_PROMISC_IN_BSS | | |
602 | FIF_PROBE_REQ)); | |
603 | if (priv->listening != listening) { | |
604 | priv->listening = listening; | |
605 | wsm_lock_tx(priv); | |
606 | cw1200_update_listening(priv, listening); | |
607 | wsm_unlock_tx(priv); | |
608 | } | |
609 | cw1200_update_filtering(priv); | |
610 | mutex_unlock(&priv->conf_mutex); | |
611 | up(&priv->scan.lock); | |
612 | } | |
613 | ||
614 | int cw1200_conf_tx(struct ieee80211_hw *dev, struct ieee80211_vif *vif, | |
615 | u16 queue, const struct ieee80211_tx_queue_params *params) | |
616 | { | |
617 | struct cw1200_common *priv = dev->priv; | |
618 | int ret = 0; | |
619 | /* To prevent re-applying PM request OID again and again*/ | |
620 | bool old_uapsd_flags; | |
621 | ||
622 | mutex_lock(&priv->conf_mutex); | |
623 | ||
624 | if (queue < dev->queues) { | |
7258416c | 625 | old_uapsd_flags = le16_to_cpu(priv->uapsd_info.uapsd_flags); |
a910e4a9 SP |
626 | |
627 | WSM_TX_QUEUE_SET(&priv->tx_queue_params, queue, 0, 0, 0); | |
628 | ret = wsm_set_tx_queue_params(priv, | |
629 | &priv->tx_queue_params.params[queue], queue); | |
630 | if (ret) { | |
631 | ret = -EINVAL; | |
632 | goto out; | |
633 | } | |
634 | ||
635 | WSM_EDCA_SET(&priv->edca, queue, params->aifs, | |
636 | params->cw_min, params->cw_max, | |
637 | params->txop, 0xc8, | |
638 | params->uapsd); | |
639 | ret = wsm_set_edca_params(priv, &priv->edca); | |
640 | if (ret) { | |
641 | ret = -EINVAL; | |
642 | goto out; | |
643 | } | |
644 | ||
645 | if (priv->mode == NL80211_IFTYPE_STATION) { | |
646 | ret = cw1200_set_uapsd_param(priv, &priv->edca); | |
647 | if (!ret && priv->setbssparams_done && | |
648 | (priv->join_status == CW1200_JOIN_STATUS_STA) && | |
7258416c | 649 | (old_uapsd_flags != le16_to_cpu(priv->uapsd_info.uapsd_flags))) |
a910e4a9 SP |
650 | ret = cw1200_set_pm(priv, &priv->powersave_mode); |
651 | } | |
652 | } else { | |
653 | ret = -EINVAL; | |
654 | } | |
655 | ||
656 | out: | |
657 | mutex_unlock(&priv->conf_mutex); | |
658 | return ret; | |
659 | } | |
660 | ||
661 | int cw1200_get_stats(struct ieee80211_hw *dev, | |
662 | struct ieee80211_low_level_stats *stats) | |
663 | { | |
664 | struct cw1200_common *priv = dev->priv; | |
665 | ||
666 | memcpy(stats, &priv->stats, sizeof(*stats)); | |
667 | return 0; | |
668 | } | |
669 | ||
670 | int cw1200_set_pm(struct cw1200_common *priv, const struct wsm_set_pm *arg) | |
671 | { | |
672 | struct wsm_set_pm pm = *arg; | |
673 | ||
674 | if (priv->uapsd_info.uapsd_flags != 0) | |
675 | pm.mode &= ~WSM_PSM_FAST_PS_FLAG; | |
676 | ||
677 | if (memcmp(&pm, &priv->firmware_ps_mode, | |
678 | sizeof(struct wsm_set_pm))) { | |
679 | priv->firmware_ps_mode = pm; | |
680 | return wsm_set_pm(priv, &pm); | |
681 | } else { | |
682 | return 0; | |
683 | } | |
684 | } | |
685 | ||
686 | int cw1200_set_key(struct ieee80211_hw *dev, enum set_key_cmd cmd, | |
687 | struct ieee80211_vif *vif, struct ieee80211_sta *sta, | |
688 | struct ieee80211_key_conf *key) | |
689 | { | |
690 | int ret = -EOPNOTSUPP; | |
691 | struct cw1200_common *priv = dev->priv; | |
692 | struct ieee80211_key_seq seq; | |
693 | ||
694 | mutex_lock(&priv->conf_mutex); | |
695 | ||
696 | if (cmd == SET_KEY) { | |
697 | u8 *peer_addr = NULL; | |
698 | int pairwise = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) ? | |
699 | 1 : 0; | |
700 | int idx = cw1200_alloc_key(priv); | |
701 | struct wsm_add_key *wsm_key = &priv->keys[idx]; | |
702 | ||
703 | if (idx < 0) { | |
704 | ret = -EINVAL; | |
705 | goto finally; | |
706 | } | |
707 | ||
708 | if (sta) | |
709 | peer_addr = sta->addr; | |
710 | ||
711 | key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE; | |
712 | ||
713 | switch (key->cipher) { | |
714 | case WLAN_CIPHER_SUITE_WEP40: | |
715 | case WLAN_CIPHER_SUITE_WEP104: | |
716 | if (key->keylen > 16) { | |
717 | cw1200_free_key(priv, idx); | |
718 | ret = -EINVAL; | |
719 | goto finally; | |
720 | } | |
721 | ||
722 | if (pairwise) { | |
723 | wsm_key->type = WSM_KEY_TYPE_WEP_PAIRWISE; | |
724 | memcpy(wsm_key->wep_pairwise.peer, | |
725 | peer_addr, ETH_ALEN); | |
726 | memcpy(wsm_key->wep_pairwise.keydata, | |
727 | &key->key[0], key->keylen); | |
728 | wsm_key->wep_pairwise.keylen = key->keylen; | |
729 | } else { | |
730 | wsm_key->type = WSM_KEY_TYPE_WEP_DEFAULT; | |
731 | memcpy(wsm_key->wep_group.keydata, | |
732 | &key->key[0], key->keylen); | |
733 | wsm_key->wep_group.keylen = key->keylen; | |
734 | wsm_key->wep_group.keyid = key->keyidx; | |
735 | } | |
736 | break; | |
737 | case WLAN_CIPHER_SUITE_TKIP: | |
738 | ieee80211_get_key_rx_seq(key, 0, &seq); | |
739 | if (pairwise) { | |
740 | wsm_key->type = WSM_KEY_TYPE_TKIP_PAIRWISE; | |
741 | memcpy(wsm_key->tkip_pairwise.peer, | |
742 | peer_addr, ETH_ALEN); | |
743 | memcpy(wsm_key->tkip_pairwise.keydata, | |
744 | &key->key[0], 16); | |
745 | memcpy(wsm_key->tkip_pairwise.tx_mic_key, | |
746 | &key->key[16], 8); | |
747 | memcpy(wsm_key->tkip_pairwise.rx_mic_key, | |
748 | &key->key[24], 8); | |
749 | } else { | |
750 | size_t mic_offset = | |
751 | (priv->mode == NL80211_IFTYPE_AP) ? | |
752 | 16 : 24; | |
753 | wsm_key->type = WSM_KEY_TYPE_TKIP_GROUP; | |
754 | memcpy(wsm_key->tkip_group.keydata, | |
755 | &key->key[0], 16); | |
756 | memcpy(wsm_key->tkip_group.rx_mic_key, | |
757 | &key->key[mic_offset], 8); | |
758 | ||
759 | wsm_key->tkip_group.rx_seqnum[0] = seq.tkip.iv16 & 0xff; | |
760 | wsm_key->tkip_group.rx_seqnum[1] = (seq.tkip.iv16 >> 8) & 0xff; | |
761 | wsm_key->tkip_group.rx_seqnum[2] = seq.tkip.iv32 & 0xff; | |
762 | wsm_key->tkip_group.rx_seqnum[3] = (seq.tkip.iv32 >> 8) & 0xff; | |
763 | wsm_key->tkip_group.rx_seqnum[4] = (seq.tkip.iv32 >> 16) & 0xff; | |
764 | wsm_key->tkip_group.rx_seqnum[5] = (seq.tkip.iv32 >> 24) & 0xff; | |
765 | wsm_key->tkip_group.rx_seqnum[6] = 0; | |
766 | wsm_key->tkip_group.rx_seqnum[7] = 0; | |
767 | ||
768 | wsm_key->tkip_group.keyid = key->keyidx; | |
769 | } | |
770 | break; | |
771 | case WLAN_CIPHER_SUITE_CCMP: | |
772 | ieee80211_get_key_rx_seq(key, 0, &seq); | |
773 | if (pairwise) { | |
774 | wsm_key->type = WSM_KEY_TYPE_AES_PAIRWISE; | |
775 | memcpy(wsm_key->aes_pairwise.peer, | |
776 | peer_addr, ETH_ALEN); | |
777 | memcpy(wsm_key->aes_pairwise.keydata, | |
778 | &key->key[0], 16); | |
779 | } else { | |
780 | wsm_key->type = WSM_KEY_TYPE_AES_GROUP; | |
781 | memcpy(wsm_key->aes_group.keydata, | |
782 | &key->key[0], 16); | |
783 | ||
784 | wsm_key->aes_group.rx_seqnum[0] = seq.ccmp.pn[5]; | |
785 | wsm_key->aes_group.rx_seqnum[1] = seq.ccmp.pn[4]; | |
786 | wsm_key->aes_group.rx_seqnum[2] = seq.ccmp.pn[3]; | |
787 | wsm_key->aes_group.rx_seqnum[3] = seq.ccmp.pn[2]; | |
788 | wsm_key->aes_group.rx_seqnum[4] = seq.ccmp.pn[1]; | |
789 | wsm_key->aes_group.rx_seqnum[5] = seq.ccmp.pn[0]; | |
790 | wsm_key->aes_group.rx_seqnum[6] = 0; | |
791 | wsm_key->aes_group.rx_seqnum[7] = 0; | |
792 | wsm_key->aes_group.keyid = key->keyidx; | |
793 | } | |
794 | break; | |
795 | case WLAN_CIPHER_SUITE_SMS4: | |
796 | if (pairwise) { | |
797 | wsm_key->type = WSM_KEY_TYPE_WAPI_PAIRWISE; | |
798 | memcpy(wsm_key->wapi_pairwise.peer, | |
799 | peer_addr, ETH_ALEN); | |
800 | memcpy(wsm_key->wapi_pairwise.keydata, | |
801 | &key->key[0], 16); | |
802 | memcpy(wsm_key->wapi_pairwise.mic_key, | |
803 | &key->key[16], 16); | |
804 | wsm_key->wapi_pairwise.keyid = key->keyidx; | |
805 | } else { | |
806 | wsm_key->type = WSM_KEY_TYPE_WAPI_GROUP; | |
807 | memcpy(wsm_key->wapi_group.keydata, | |
808 | &key->key[0], 16); | |
809 | memcpy(wsm_key->wapi_group.mic_key, | |
810 | &key->key[16], 16); | |
811 | wsm_key->wapi_group.keyid = key->keyidx; | |
812 | } | |
813 | break; | |
814 | default: | |
815 | pr_warn("Unhandled key type %d\n", key->cipher); | |
816 | cw1200_free_key(priv, idx); | |
817 | ret = -EOPNOTSUPP; | |
818 | goto finally; | |
819 | } | |
820 | ret = wsm_add_key(priv, wsm_key); | |
821 | if (!ret) | |
822 | key->hw_key_idx = idx; | |
823 | else | |
824 | cw1200_free_key(priv, idx); | |
825 | } else if (cmd == DISABLE_KEY) { | |
826 | struct wsm_remove_key wsm_key = { | |
827 | .index = key->hw_key_idx, | |
828 | }; | |
829 | ||
830 | if (wsm_key.index > WSM_KEY_MAX_INDEX) { | |
831 | ret = -EINVAL; | |
832 | goto finally; | |
833 | } | |
834 | ||
835 | cw1200_free_key(priv, wsm_key.index); | |
836 | ret = wsm_remove_key(priv, &wsm_key); | |
837 | } else { | |
838 | pr_warn("Unhandled key command %d\n", cmd); | |
839 | } | |
840 | ||
841 | finally: | |
842 | mutex_unlock(&priv->conf_mutex); | |
843 | return ret; | |
844 | } | |
845 | ||
846 | void cw1200_wep_key_work(struct work_struct *work) | |
847 | { | |
848 | struct cw1200_common *priv = | |
849 | container_of(work, struct cw1200_common, wep_key_work); | |
850 | u8 queue_id = cw1200_queue_get_queue_id(priv->pending_frame_id); | |
851 | struct cw1200_queue *queue = &priv->tx_queue[queue_id]; | |
852 | __le32 wep_default_key_id = __cpu_to_le32( | |
853 | priv->wep_default_key_id); | |
854 | ||
855 | pr_debug("[STA] Setting default WEP key: %d\n", | |
856 | priv->wep_default_key_id); | |
857 | wsm_flush_tx(priv); | |
858 | wsm_write_mib(priv, WSM_MIB_ID_DOT11_WEP_DEFAULT_KEY_ID, | |
859 | &wep_default_key_id, sizeof(wep_default_key_id)); | |
860 | cw1200_queue_requeue(queue, priv->pending_frame_id); | |
861 | wsm_unlock_tx(priv); | |
862 | } | |
863 | ||
864 | int cw1200_set_rts_threshold(struct ieee80211_hw *hw, u32 value) | |
865 | { | |
866 | int ret = 0; | |
867 | __le32 val32; | |
868 | struct cw1200_common *priv = hw->priv; | |
869 | ||
870 | if (priv->mode == NL80211_IFTYPE_UNSPECIFIED) | |
871 | return 0; | |
872 | ||
873 | if (value != (u32) -1) | |
874 | val32 = __cpu_to_le32(value); | |
875 | else | |
876 | val32 = 0; /* disabled */ | |
877 | ||
878 | if (priv->mode == NL80211_IFTYPE_UNSPECIFIED) { | |
879 | /* device is down, can _not_ set threshold */ | |
880 | ret = -ENODEV; | |
881 | goto out; | |
882 | } | |
883 | ||
884 | if (priv->rts_threshold == value) | |
885 | goto out; | |
886 | ||
887 | pr_debug("[STA] Setting RTS threshold: %d\n", | |
888 | priv->rts_threshold); | |
889 | ||
890 | /* mutex_lock(&priv->conf_mutex); */ | |
891 | ret = wsm_write_mib(priv, WSM_MIB_ID_DOT11_RTS_THRESHOLD, | |
892 | &val32, sizeof(val32)); | |
893 | if (!ret) | |
894 | priv->rts_threshold = value; | |
895 | /* mutex_unlock(&priv->conf_mutex); */ | |
896 | ||
897 | out: | |
898 | return ret; | |
899 | } | |
900 | ||
901 | /* If successful, LOCKS the TX queue! */ | |
902 | static int __cw1200_flush(struct cw1200_common *priv, bool drop) | |
903 | { | |
904 | int i, ret; | |
905 | ||
906 | for (;;) { | |
907 | /* TODO: correct flush handling is required when dev_stop. | |
908 | * Temporary workaround: 2s | |
909 | */ | |
910 | if (drop) { | |
911 | for (i = 0; i < 4; ++i) | |
912 | cw1200_queue_clear(&priv->tx_queue[i]); | |
913 | } else { | |
914 | ret = wait_event_timeout( | |
915 | priv->tx_queue_stats.wait_link_id_empty, | |
916 | cw1200_queue_stats_is_empty( | |
917 | &priv->tx_queue_stats, -1), | |
918 | 2 * HZ); | |
919 | } | |
920 | ||
921 | if (!drop && ret <= 0) { | |
922 | ret = -ETIMEDOUT; | |
923 | break; | |
924 | } else { | |
925 | ret = 0; | |
926 | } | |
927 | ||
928 | wsm_lock_tx(priv); | |
929 | if (!cw1200_queue_stats_is_empty(&priv->tx_queue_stats, -1)) { | |
930 | /* Highly unlikely: WSM requeued frames. */ | |
931 | wsm_unlock_tx(priv); | |
932 | continue; | |
933 | } | |
934 | break; | |
935 | } | |
936 | return ret; | |
937 | } | |
938 | ||
939 | void cw1200_flush(struct ieee80211_hw *hw, u32 queues, bool drop) | |
940 | { | |
941 | struct cw1200_common *priv = hw->priv; | |
942 | ||
943 | switch (priv->mode) { | |
944 | case NL80211_IFTYPE_MONITOR: | |
945 | drop = true; | |
946 | break; | |
947 | case NL80211_IFTYPE_AP: | |
948 | if (!priv->enable_beacon) | |
949 | drop = true; | |
950 | break; | |
951 | } | |
952 | ||
953 | if (!__cw1200_flush(priv, drop)) | |
954 | wsm_unlock_tx(priv); | |
955 | ||
956 | return; | |
957 | } | |
958 | ||
959 | /* ******************************************************************** */ | |
960 | /* WSM callbacks */ | |
961 | ||
962 | void cw1200_free_event_queue(struct cw1200_common *priv) | |
963 | { | |
964 | LIST_HEAD(list); | |
965 | ||
966 | spin_lock(&priv->event_queue_lock); | |
967 | list_splice_init(&priv->event_queue, &list); | |
968 | spin_unlock(&priv->event_queue_lock); | |
969 | ||
970 | __cw1200_free_event_queue(&list); | |
971 | } | |
972 | ||
973 | void cw1200_event_handler(struct work_struct *work) | |
974 | { | |
975 | struct cw1200_common *priv = | |
976 | container_of(work, struct cw1200_common, event_handler); | |
977 | struct cw1200_wsm_event *event; | |
978 | LIST_HEAD(list); | |
979 | ||
980 | spin_lock(&priv->event_queue_lock); | |
981 | list_splice_init(&priv->event_queue, &list); | |
982 | spin_unlock(&priv->event_queue_lock); | |
983 | ||
984 | list_for_each_entry(event, &list, link) { | |
985 | switch (event->evt.id) { | |
986 | case WSM_EVENT_ERROR: | |
987 | pr_err("Unhandled WSM Error from LMAC\n"); | |
988 | break; | |
989 | case WSM_EVENT_BSS_LOST: | |
990 | pr_debug("[CQM] BSS lost.\n"); | |
991 | cancel_work_sync(&priv->unjoin_work); | |
992 | if (!down_trylock(&priv->scan.lock)) { | |
993 | cw1200_cqm_bssloss_sm(priv, 1, 0, 0); | |
994 | up(&priv->scan.lock); | |
995 | } else { | |
996 | /* Scan is in progress. Delay reporting. | |
997 | * Scan complete will trigger bss_loss_work | |
998 | */ | |
999 | priv->delayed_link_loss = 1; | |
1000 | /* Also start a watchdog. */ | |
1001 | queue_delayed_work(priv->workqueue, | |
1002 | &priv->bss_loss_work, 5*HZ); | |
1003 | } | |
1004 | break; | |
1005 | case WSM_EVENT_BSS_REGAINED: | |
1006 | pr_debug("[CQM] BSS regained.\n"); | |
1007 | cw1200_cqm_bssloss_sm(priv, 0, 0, 0); | |
1008 | cancel_work_sync(&priv->unjoin_work); | |
1009 | break; | |
1010 | case WSM_EVENT_RADAR_DETECTED: | |
1011 | wiphy_info(priv->hw->wiphy, "radar pulse detected\n"); | |
1012 | break; | |
1013 | case WSM_EVENT_RCPI_RSSI: | |
1014 | { | |
1015 | /* RSSI: signed Q8.0, RCPI: unsigned Q7.1 | |
1016 | * RSSI = RCPI / 2 - 110 | |
1017 | */ | |
8b3e7be4 | 1018 | int rcpi_rssi = (int)(event->evt.data & 0xFF); |
a910e4a9 SP |
1019 | int cqm_evt; |
1020 | if (priv->cqm_use_rssi) | |
8b3e7be4 | 1021 | rcpi_rssi = (s8)rcpi_rssi; |
a910e4a9 | 1022 | else |
8b3e7be4 | 1023 | rcpi_rssi = rcpi_rssi / 2 - 110; |
a910e4a9 | 1024 | |
8b3e7be4 | 1025 | cqm_evt = (rcpi_rssi <= priv->cqm_rssi_thold) ? |
a910e4a9 SP |
1026 | NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW : |
1027 | NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH; | |
8b3e7be4 | 1028 | pr_debug("[CQM] RSSI event: %d.\n", rcpi_rssi); |
a910e4a9 SP |
1029 | ieee80211_cqm_rssi_notify(priv->vif, cqm_evt, |
1030 | GFP_KERNEL); | |
1031 | break; | |
1032 | } | |
1033 | case WSM_EVENT_BT_INACTIVE: | |
1034 | pr_warn("Unhandled BT INACTIVE from LMAC\n"); | |
1035 | break; | |
1036 | case WSM_EVENT_BT_ACTIVE: | |
1037 | pr_warn("Unhandled BT ACTIVE from LMAC\n"); | |
1038 | break; | |
1039 | } | |
1040 | } | |
1041 | __cw1200_free_event_queue(&list); | |
1042 | } | |
1043 | ||
1044 | void cw1200_bss_loss_work(struct work_struct *work) | |
1045 | { | |
1046 | struct cw1200_common *priv = | |
1047 | container_of(work, struct cw1200_common, bss_loss_work.work); | |
1048 | ||
1049 | pr_debug("[CQM] Reporting connection loss.\n"); | |
1050 | wsm_lock_tx(priv); | |
1051 | if (queue_work(priv->workqueue, &priv->unjoin_work) <= 0) | |
1052 | wsm_unlock_tx(priv); | |
1053 | } | |
1054 | ||
1055 | void cw1200_bss_params_work(struct work_struct *work) | |
1056 | { | |
1057 | struct cw1200_common *priv = | |
1058 | container_of(work, struct cw1200_common, bss_params_work); | |
1059 | mutex_lock(&priv->conf_mutex); | |
1060 | ||
1061 | priv->bss_params.reset_beacon_loss = 1; | |
1062 | wsm_set_bss_params(priv, &priv->bss_params); | |
1063 | priv->bss_params.reset_beacon_loss = 0; | |
1064 | ||
1065 | mutex_unlock(&priv->conf_mutex); | |
1066 | } | |
1067 | ||
1068 | /* ******************************************************************** */ | |
1069 | /* Internal API */ | |
1070 | ||
8b3e7be4 | 1071 | /* This function is called to Parse the SDD file |
a910e4a9 SP |
1072 | * to extract listen_interval and PTA related information |
1073 | * sdd is a TLV: u8 id, u8 len, u8 data[] | |
1074 | */ | |
1075 | static int cw1200_parse_sdd_file(struct cw1200_common *priv) | |
1076 | { | |
1077 | const u8 *p = priv->sdd->data; | |
1078 | int ret = 0; | |
1079 | ||
1080 | while (p + 2 <= priv->sdd->data + priv->sdd->size) { | |
1081 | if (p + p[1] + 2 > priv->sdd->data + priv->sdd->size) { | |
1082 | pr_warn("Malformed sdd structure\n"); | |
1083 | return -1; | |
1084 | } | |
1085 | switch (p[0]) { | |
1086 | case SDD_PTA_CFG_ELT_ID: { | |
1087 | u16 v; | |
1088 | if (p[1] < 4) { | |
1089 | pr_warn("SDD_PTA_CFG_ELT_ID malformed\n"); | |
1090 | ret = -1; | |
1091 | break; | |
1092 | } | |
7258416c | 1093 | v = le16_to_cpu(*((__le16 *)(p + 2))); |
a910e4a9 SP |
1094 | if (!v) /* non-zero means this is enabled */ |
1095 | break; | |
1096 | ||
7258416c | 1097 | v = le16_to_cpu(*((__le16 *)(p + 4))); |
a910e4a9 SP |
1098 | priv->conf_listen_interval = (v >> 7) & 0x1F; |
1099 | pr_debug("PTA found; Listen Interval %d\n", | |
1100 | priv->conf_listen_interval); | |
1101 | break; | |
1102 | } | |
1103 | case SDD_REFERENCE_FREQUENCY_ELT_ID: { | |
7258416c | 1104 | u16 clk = le16_to_cpu(*((__le16 *)(p + 2))); |
a910e4a9 SP |
1105 | if (clk != priv->hw_refclk) |
1106 | pr_warn("SDD file doesn't match configured refclk (%d vs %d)\n", | |
1107 | clk, priv->hw_refclk); | |
1108 | break; | |
1109 | } | |
1110 | default: | |
1111 | break; | |
1112 | } | |
1113 | p += p[1] + 2; | |
1114 | } | |
1115 | ||
1116 | if (!priv->bt_present) { | |
1117 | pr_debug("PTA element NOT found.\n"); | |
1118 | priv->conf_listen_interval = 0; | |
1119 | } | |
1120 | return ret; | |
1121 | } | |
1122 | ||
1123 | int cw1200_setup_mac(struct cw1200_common *priv) | |
1124 | { | |
1125 | int ret = 0; | |
1126 | ||
1127 | /* NOTE: There is a bug in FW: it reports signal | |
1128 | * as RSSI if RSSI subscription is enabled. | |
1129 | * It's not enough to set WSM_RCPI_RSSI_USE_RSSI. | |
1130 | * | |
1131 | * NOTE2: RSSI based reports have been switched to RCPI, since | |
1132 | * FW has a bug and RSSI reported values are not stable, | |
1133 | * what can leads to signal level oscilations in user-end applications | |
1134 | */ | |
1135 | struct wsm_rcpi_rssi_threshold threshold = { | |
1136 | .rssiRcpiMode = WSM_RCPI_RSSI_THRESHOLD_ENABLE | | |
1137 | WSM_RCPI_RSSI_DONT_USE_UPPER | | |
1138 | WSM_RCPI_RSSI_DONT_USE_LOWER, | |
1139 | .rollingAverageCount = 16, | |
1140 | }; | |
1141 | ||
1142 | struct wsm_configuration cfg = { | |
1143 | .dot11StationId = &priv->mac_addr[0], | |
1144 | }; | |
1145 | ||
1146 | /* Remember the decission here to make sure, we will handle | |
1147 | * the RCPI/RSSI value correctly on WSM_EVENT_RCPI_RSS | |
1148 | */ | |
1149 | if (threshold.rssiRcpiMode & WSM_RCPI_RSSI_USE_RSSI) | |
1150 | priv->cqm_use_rssi = true; | |
1151 | ||
1152 | if (!priv->sdd) { | |
1153 | ret = request_firmware(&priv->sdd, priv->sdd_path, priv->pdev); | |
1154 | if (ret) { | |
1155 | pr_err("Can't load sdd file %s.\n", priv->sdd_path); | |
1156 | return ret; | |
1157 | } | |
1158 | cw1200_parse_sdd_file(priv); | |
1159 | } | |
1160 | ||
1161 | cfg.dpdData = priv->sdd->data; | |
1162 | cfg.dpdData_size = priv->sdd->size; | |
1163 | ret = wsm_configuration(priv, &cfg); | |
1164 | if (ret) | |
1165 | return ret; | |
1166 | ||
1167 | /* Configure RSSI/SCPI reporting as RSSI. */ | |
1168 | wsm_set_rcpi_rssi_threshold(priv, &threshold); | |
1169 | ||
1170 | return 0; | |
1171 | } | |
1172 | ||
1173 | static void cw1200_join_complete(struct cw1200_common *priv) | |
1174 | { | |
1175 | pr_debug("[STA] Join complete (%d)\n", priv->join_complete_status); | |
1176 | ||
1177 | priv->join_pending = false; | |
1178 | if (priv->join_complete_status) { | |
1179 | priv->join_status = CW1200_JOIN_STATUS_PASSIVE; | |
1180 | cw1200_update_listening(priv, priv->listening); | |
1181 | cw1200_do_unjoin(priv); | |
1182 | ieee80211_connection_loss(priv->vif); | |
1183 | } else { | |
1184 | if (priv->mode == NL80211_IFTYPE_ADHOC) | |
1185 | priv->join_status = CW1200_JOIN_STATUS_IBSS; | |
1186 | else | |
1187 | priv->join_status = CW1200_JOIN_STATUS_PRE_STA; | |
1188 | } | |
1189 | wsm_unlock_tx(priv); /* Clearing the lock held before do_join() */ | |
1190 | } | |
1191 | ||
1192 | void cw1200_join_complete_work(struct work_struct *work) | |
1193 | { | |
1194 | struct cw1200_common *priv = | |
1195 | container_of(work, struct cw1200_common, join_complete_work); | |
1196 | mutex_lock(&priv->conf_mutex); | |
1197 | cw1200_join_complete(priv); | |
1198 | mutex_unlock(&priv->conf_mutex); | |
1199 | } | |
1200 | ||
1201 | void cw1200_join_complete_cb(struct cw1200_common *priv, | |
1202 | struct wsm_join_complete *arg) | |
1203 | { | |
1204 | pr_debug("[STA] cw1200_join_complete_cb called, status=%d.\n", | |
1205 | arg->status); | |
1206 | ||
1207 | if (cancel_delayed_work(&priv->join_timeout)) { | |
1208 | priv->join_complete_status = arg->status; | |
1209 | queue_work(priv->workqueue, &priv->join_complete_work); | |
1210 | } | |
1211 | } | |
1212 | ||
1213 | /* MUST be called with tx_lock held! It will be unlocked for us. */ | |
1214 | static void cw1200_do_join(struct cw1200_common *priv) | |
1215 | { | |
1216 | const u8 *bssid; | |
1217 | struct ieee80211_bss_conf *conf = &priv->vif->bss_conf; | |
1218 | struct cfg80211_bss *bss = NULL; | |
1219 | struct wsm_protected_mgmt_policy mgmt_policy; | |
1220 | struct wsm_join join = { | |
1221 | .mode = conf->ibss_joined ? | |
1222 | WSM_JOIN_MODE_IBSS : WSM_JOIN_MODE_BSS, | |
1223 | .preamble_type = WSM_JOIN_PREAMBLE_LONG, | |
1224 | .probe_for_join = 1, | |
1225 | .atim_window = 0, | |
1226 | .basic_rate_set = cw1200_rate_mask_to_wsm(priv, | |
1227 | conf->basic_rates), | |
1228 | }; | |
1229 | if (delayed_work_pending(&priv->join_timeout)) { | |
1230 | pr_warn("[STA] - Join request already pending, skipping..\n"); | |
1231 | wsm_unlock_tx(priv); | |
1232 | return; | |
1233 | } | |
1234 | ||
1235 | if (priv->join_status) | |
1236 | cw1200_do_unjoin(priv); | |
1237 | ||
1238 | bssid = priv->vif->bss_conf.bssid; | |
1239 | ||
1240 | bss = cfg80211_get_bss(priv->hw->wiphy, priv->channel, | |
1241 | bssid, NULL, 0, 0, 0); | |
1242 | ||
1243 | if (!bss && !conf->ibss_joined) { | |
1244 | wsm_unlock_tx(priv); | |
1245 | return; | |
1246 | } | |
1247 | ||
1248 | mutex_lock(&priv->conf_mutex); | |
1249 | ||
1250 | /* Under the conf lock: check scan status and | |
1251 | * bail out if it is in progress. | |
1252 | */ | |
1253 | if (atomic_read(&priv->scan.in_progress)) { | |
1254 | wsm_unlock_tx(priv); | |
1255 | goto done_put; | |
1256 | } | |
1257 | ||
1258 | priv->join_pending = true; | |
1259 | ||
1260 | /* Sanity check basic rates */ | |
1261 | if (!join.basic_rate_set) | |
1262 | join.basic_rate_set = 7; | |
1263 | ||
1264 | /* Sanity check beacon interval */ | |
1265 | if (!priv->beacon_int) | |
1266 | priv->beacon_int = 1; | |
1267 | ||
1268 | join.beacon_interval = priv->beacon_int; | |
1269 | ||
1270 | /* BT Coex related changes */ | |
1271 | if (priv->bt_present) { | |
1272 | if (((priv->conf_listen_interval * 100) % | |
1273 | priv->beacon_int) == 0) | |
1274 | priv->listen_interval = | |
1275 | ((priv->conf_listen_interval * 100) / | |
1276 | priv->beacon_int); | |
1277 | else | |
1278 | priv->listen_interval = | |
1279 | ((priv->conf_listen_interval * 100) / | |
1280 | priv->beacon_int + 1); | |
1281 | } | |
1282 | ||
1283 | if (priv->hw->conf.ps_dtim_period) | |
1284 | priv->join_dtim_period = priv->hw->conf.ps_dtim_period; | |
1285 | join.dtim_period = priv->join_dtim_period; | |
1286 | ||
1287 | join.channel_number = priv->channel->hw_value; | |
1288 | join.band = (priv->channel->band == IEEE80211_BAND_5GHZ) ? | |
1289 | WSM_PHY_BAND_5G : WSM_PHY_BAND_2_4G; | |
1290 | ||
1291 | memcpy(join.bssid, bssid, sizeof(join.bssid)); | |
1292 | ||
1293 | pr_debug("[STA] Join BSSID: %pM DTIM: %d, interval: %d\n", | |
1294 | join.bssid, | |
1295 | join.dtim_period, priv->beacon_int); | |
1296 | ||
1297 | if (!conf->ibss_joined) { | |
1298 | const u8 *ssidie; | |
1299 | rcu_read_lock(); | |
1300 | ssidie = ieee80211_bss_get_ie(bss, WLAN_EID_SSID); | |
1301 | if (ssidie) { | |
1302 | join.ssid_len = ssidie[1]; | |
1303 | memcpy(join.ssid, &ssidie[2], join.ssid_len); | |
1304 | } | |
1305 | rcu_read_unlock(); | |
1306 | } | |
1307 | ||
1308 | if (priv->vif->p2p) { | |
1309 | join.flags |= WSM_JOIN_FLAGS_P2P_GO; | |
1310 | join.basic_rate_set = | |
1311 | cw1200_rate_mask_to_wsm(priv, 0xFF0); | |
1312 | } | |
1313 | ||
1314 | /* Enable asynchronous join calls */ | |
1315 | if (!conf->ibss_joined) { | |
1316 | join.flags |= WSM_JOIN_FLAGS_FORCE; | |
1317 | join.flags |= WSM_JOIN_FLAGS_FORCE_WITH_COMPLETE_IND; | |
1318 | } | |
1319 | ||
1320 | wsm_flush_tx(priv); | |
1321 | ||
1322 | /* Stay Awake for Join and Auth Timeouts and a bit more */ | |
1323 | cw1200_pm_stay_awake(&priv->pm_state, | |
1324 | CW1200_JOIN_TIMEOUT + CW1200_AUTH_TIMEOUT); | |
1325 | ||
1326 | cw1200_update_listening(priv, false); | |
1327 | ||
1328 | /* Turn on Block ACKs */ | |
1329 | wsm_set_block_ack_policy(priv, priv->ba_tx_tid_mask, | |
1330 | priv->ba_rx_tid_mask); | |
1331 | ||
1332 | /* Set up timeout */ | |
1333 | if (join.flags & WSM_JOIN_FLAGS_FORCE_WITH_COMPLETE_IND) { | |
1334 | priv->join_status = CW1200_JOIN_STATUS_JOINING; | |
1335 | queue_delayed_work(priv->workqueue, | |
1336 | &priv->join_timeout, | |
1337 | CW1200_JOIN_TIMEOUT); | |
1338 | } | |
1339 | ||
1340 | /* 802.11w protected mgmt frames */ | |
1341 | mgmt_policy.protectedMgmtEnable = 0; | |
1342 | mgmt_policy.unprotectedMgmtFramesAllowed = 1; | |
1343 | mgmt_policy.encryptionForAuthFrame = 1; | |
1344 | wsm_set_protected_mgmt_policy(priv, &mgmt_policy); | |
1345 | ||
1346 | /* Perform actual join */ | |
1347 | if (wsm_join(priv, &join)) { | |
1348 | pr_err("[STA] cw1200_join_work: wsm_join failed!\n"); | |
1349 | cancel_delayed_work_sync(&priv->join_timeout); | |
1350 | cw1200_update_listening(priv, priv->listening); | |
1351 | /* Tx lock still held, unjoin will clear it. */ | |
1352 | if (queue_work(priv->workqueue, &priv->unjoin_work) <= 0) | |
1353 | wsm_unlock_tx(priv); | |
1354 | } else { | |
1355 | if (!(join.flags & WSM_JOIN_FLAGS_FORCE_WITH_COMPLETE_IND)) | |
1356 | cw1200_join_complete(priv); /* Will clear tx_lock */ | |
1357 | ||
1358 | /* Upload keys */ | |
1359 | cw1200_upload_keys(priv); | |
1360 | ||
1361 | /* Due to beacon filtering it is possible that the | |
1362 | * AP's beacon is not known for the mac80211 stack. | |
1363 | * Disable filtering temporary to make sure the stack | |
1364 | * receives at least one | |
1365 | */ | |
1366 | priv->disable_beacon_filter = true; | |
1367 | } | |
1368 | cw1200_update_filtering(priv); | |
1369 | ||
1370 | done_put: | |
1371 | mutex_unlock(&priv->conf_mutex); | |
1372 | if (bss) | |
1373 | cfg80211_put_bss(priv->hw->wiphy, bss); | |
1374 | } | |
1375 | ||
1376 | void cw1200_join_timeout(struct work_struct *work) | |
1377 | { | |
1378 | struct cw1200_common *priv = | |
1379 | container_of(work, struct cw1200_common, join_timeout.work); | |
1380 | pr_debug("[WSM] Join timed out.\n"); | |
1381 | wsm_lock_tx(priv); | |
1382 | if (queue_work(priv->workqueue, &priv->unjoin_work) <= 0) | |
1383 | wsm_unlock_tx(priv); | |
1384 | } | |
1385 | ||
1386 | static void cw1200_do_unjoin(struct cw1200_common *priv) | |
1387 | { | |
1388 | struct wsm_reset reset = { | |
1389 | .reset_statistics = true, | |
1390 | }; | |
1391 | ||
1392 | cancel_delayed_work_sync(&priv->join_timeout); | |
1393 | ||
1394 | mutex_lock(&priv->conf_mutex); | |
1395 | priv->join_pending = false; | |
1396 | ||
1397 | if (atomic_read(&priv->scan.in_progress)) { | |
1398 | if (priv->delayed_unjoin) | |
1399 | wiphy_dbg(priv->hw->wiphy, "Delayed unjoin is already scheduled.\n"); | |
1400 | else | |
1401 | priv->delayed_unjoin = true; | |
1402 | goto done; | |
1403 | } | |
1404 | ||
1405 | priv->delayed_link_loss = false; | |
1406 | ||
1407 | if (!priv->join_status) | |
1408 | goto done; | |
1409 | ||
5a6e0cf7 SP |
1410 | if (priv->join_status == CW1200_JOIN_STATUS_AP) |
1411 | goto done; | |
a910e4a9 SP |
1412 | |
1413 | cancel_work_sync(&priv->update_filtering_work); | |
1414 | cancel_work_sync(&priv->set_beacon_wakeup_period_work); | |
1415 | priv->join_status = CW1200_JOIN_STATUS_PASSIVE; | |
1416 | ||
1417 | /* Unjoin is a reset. */ | |
1418 | wsm_flush_tx(priv); | |
1419 | wsm_keep_alive_period(priv, 0); | |
1420 | wsm_reset(priv, &reset); | |
1421 | wsm_set_output_power(priv, priv->output_power * 10); | |
1422 | priv->join_dtim_period = 0; | |
1423 | cw1200_setup_mac(priv); | |
1424 | cw1200_free_event_queue(priv); | |
1425 | cancel_work_sync(&priv->event_handler); | |
1426 | cw1200_update_listening(priv, priv->listening); | |
1427 | cw1200_cqm_bssloss_sm(priv, 0, 0, 0); | |
1428 | ||
1429 | /* Disable Block ACKs */ | |
1430 | wsm_set_block_ack_policy(priv, 0, 0); | |
1431 | ||
1432 | priv->disable_beacon_filter = false; | |
1433 | cw1200_update_filtering(priv); | |
1434 | memset(&priv->association_mode, 0, | |
1435 | sizeof(priv->association_mode)); | |
1436 | memset(&priv->bss_params, 0, sizeof(priv->bss_params)); | |
1437 | priv->setbssparams_done = false; | |
1438 | memset(&priv->firmware_ps_mode, 0, | |
1439 | sizeof(priv->firmware_ps_mode)); | |
1440 | ||
1441 | pr_debug("[STA] Unjoin completed.\n"); | |
1442 | ||
1443 | done: | |
1444 | mutex_unlock(&priv->conf_mutex); | |
1445 | } | |
1446 | ||
1447 | void cw1200_unjoin_work(struct work_struct *work) | |
1448 | { | |
1449 | struct cw1200_common *priv = | |
1450 | container_of(work, struct cw1200_common, unjoin_work); | |
1451 | ||
1452 | cw1200_do_unjoin(priv); | |
1453 | ||
1454 | /* Tell the stack we're dead */ | |
1455 | ieee80211_connection_loss(priv->vif); | |
1456 | ||
1457 | wsm_unlock_tx(priv); | |
1458 | } | |
1459 | ||
1460 | int cw1200_enable_listening(struct cw1200_common *priv) | |
1461 | { | |
1462 | struct wsm_start start = { | |
1463 | .mode = WSM_START_MODE_P2P_DEV, | |
1464 | .band = WSM_PHY_BAND_2_4G, | |
1465 | .beacon_interval = 100, | |
1466 | .dtim_period = 1, | |
1467 | .probe_delay = 0, | |
1468 | .basic_rate_set = 0x0F, | |
1469 | }; | |
1470 | ||
1471 | if (priv->channel) { | |
1472 | start.band = priv->channel->band == IEEE80211_BAND_5GHZ ? | |
1473 | WSM_PHY_BAND_5G : WSM_PHY_BAND_2_4G; | |
1474 | start.channel_number = priv->channel->hw_value; | |
1475 | } else { | |
1476 | start.band = WSM_PHY_BAND_2_4G; | |
1477 | start.channel_number = 1; | |
1478 | } | |
1479 | ||
1480 | return wsm_start(priv, &start); | |
1481 | } | |
1482 | ||
1483 | int cw1200_disable_listening(struct cw1200_common *priv) | |
1484 | { | |
1485 | int ret; | |
1486 | struct wsm_reset reset = { | |
1487 | .reset_statistics = true, | |
1488 | }; | |
1489 | ret = wsm_reset(priv, &reset); | |
1490 | return ret; | |
1491 | } | |
1492 | ||
1493 | void cw1200_update_listening(struct cw1200_common *priv, bool enabled) | |
1494 | { | |
1495 | if (enabled) { | |
1496 | if (priv->join_status == CW1200_JOIN_STATUS_PASSIVE) { | |
1497 | if (!cw1200_enable_listening(priv)) | |
1498 | priv->join_status = CW1200_JOIN_STATUS_MONITOR; | |
1499 | wsm_set_probe_responder(priv, true); | |
1500 | } | |
1501 | } else { | |
1502 | if (priv->join_status == CW1200_JOIN_STATUS_MONITOR) { | |
1503 | if (!cw1200_disable_listening(priv)) | |
1504 | priv->join_status = CW1200_JOIN_STATUS_PASSIVE; | |
1505 | wsm_set_probe_responder(priv, false); | |
1506 | } | |
1507 | } | |
1508 | } | |
1509 | ||
1510 | int cw1200_set_uapsd_param(struct cw1200_common *priv, | |
1511 | const struct wsm_edca_params *arg) | |
1512 | { | |
1513 | int ret; | |
1514 | u16 uapsd_flags = 0; | |
1515 | ||
1516 | /* Here's the mapping AC [queue, bit] | |
1517 | * VO [0,3], VI [1, 2], BE [2, 1], BK [3, 0] | |
1518 | */ | |
1519 | ||
1520 | if (arg->uapsd_enable[0]) | |
1521 | uapsd_flags |= 1 << 3; | |
1522 | ||
1523 | if (arg->uapsd_enable[1]) | |
1524 | uapsd_flags |= 1 << 2; | |
1525 | ||
1526 | if (arg->uapsd_enable[2]) | |
1527 | uapsd_flags |= 1 << 1; | |
1528 | ||
1529 | if (arg->uapsd_enable[3]) | |
1530 | uapsd_flags |= 1; | |
1531 | ||
1532 | /* Currently pseudo U-APSD operation is not supported, so setting | |
1533 | * MinAutoTriggerInterval, MaxAutoTriggerInterval and | |
1534 | * AutoTriggerStep to 0 | |
1535 | */ | |
1536 | ||
1537 | priv->uapsd_info.uapsd_flags = cpu_to_le16(uapsd_flags); | |
1538 | priv->uapsd_info.min_auto_trigger_interval = 0; | |
1539 | priv->uapsd_info.max_auto_trigger_interval = 0; | |
1540 | priv->uapsd_info.auto_trigger_step = 0; | |
1541 | ||
1542 | ret = wsm_set_uapsd_info(priv, &priv->uapsd_info); | |
1543 | return ret; | |
1544 | } | |
1545 | ||
1546 | /* ******************************************************************** */ | |
1547 | /* AP API */ | |
1548 | ||
1549 | int cw1200_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif, | |
1550 | struct ieee80211_sta *sta) | |
1551 | { | |
1552 | struct cw1200_common *priv = hw->priv; | |
1553 | struct cw1200_sta_priv *sta_priv = | |
1554 | (struct cw1200_sta_priv *)&sta->drv_priv; | |
1555 | struct cw1200_link_entry *entry; | |
1556 | struct sk_buff *skb; | |
1557 | ||
1558 | if (priv->mode != NL80211_IFTYPE_AP) | |
1559 | return 0; | |
1560 | ||
1561 | sta_priv->link_id = cw1200_find_link_id(priv, sta->addr); | |
1562 | if (WARN_ON(!sta_priv->link_id)) { | |
1563 | wiphy_info(priv->hw->wiphy, | |
1564 | "[AP] No more link IDs available.\n"); | |
1565 | return -ENOENT; | |
1566 | } | |
1567 | ||
1568 | entry = &priv->link_id_db[sta_priv->link_id - 1]; | |
1569 | spin_lock_bh(&priv->ps_state_lock); | |
1570 | if ((sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK) == | |
1571 | IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK) | |
1572 | priv->sta_asleep_mask |= BIT(sta_priv->link_id); | |
1573 | entry->status = CW1200_LINK_HARD; | |
1574 | while ((skb = skb_dequeue(&entry->rx_queue))) | |
1575 | ieee80211_rx_irqsafe(priv->hw, skb); | |
1576 | spin_unlock_bh(&priv->ps_state_lock); | |
1577 | return 0; | |
1578 | } | |
1579 | ||
1580 | int cw1200_sta_remove(struct ieee80211_hw *hw, struct ieee80211_vif *vif, | |
1581 | struct ieee80211_sta *sta) | |
1582 | { | |
1583 | struct cw1200_common *priv = hw->priv; | |
1584 | struct cw1200_sta_priv *sta_priv = | |
1585 | (struct cw1200_sta_priv *)&sta->drv_priv; | |
1586 | struct cw1200_link_entry *entry; | |
1587 | ||
1588 | if (priv->mode != NL80211_IFTYPE_AP || !sta_priv->link_id) | |
1589 | return 0; | |
1590 | ||
1591 | entry = &priv->link_id_db[sta_priv->link_id - 1]; | |
1592 | spin_lock_bh(&priv->ps_state_lock); | |
1593 | entry->status = CW1200_LINK_RESERVE; | |
1594 | entry->timestamp = jiffies; | |
1595 | wsm_lock_tx_async(priv); | |
1596 | if (queue_work(priv->workqueue, &priv->link_id_work) <= 0) | |
1597 | wsm_unlock_tx(priv); | |
1598 | spin_unlock_bh(&priv->ps_state_lock); | |
1599 | flush_workqueue(priv->workqueue); | |
1600 | return 0; | |
1601 | } | |
1602 | ||
1603 | static void __cw1200_sta_notify(struct ieee80211_hw *dev, | |
1604 | struct ieee80211_vif *vif, | |
1605 | enum sta_notify_cmd notify_cmd, | |
1606 | int link_id) | |
1607 | { | |
1608 | struct cw1200_common *priv = dev->priv; | |
1609 | u32 bit, prev; | |
1610 | ||
1611 | /* Zero link id means "for all link IDs" */ | |
1612 | if (link_id) | |
1613 | bit = BIT(link_id); | |
1614 | else if (WARN_ON_ONCE(notify_cmd != STA_NOTIFY_AWAKE)) | |
1615 | bit = 0; | |
1616 | else | |
1617 | bit = priv->link_id_map; | |
1618 | prev = priv->sta_asleep_mask & bit; | |
1619 | ||
1620 | switch (notify_cmd) { | |
1621 | case STA_NOTIFY_SLEEP: | |
1622 | if (!prev) { | |
1623 | if (priv->buffered_multicasts && | |
1624 | !priv->sta_asleep_mask) | |
1625 | queue_work(priv->workqueue, | |
1626 | &priv->multicast_start_work); | |
1627 | priv->sta_asleep_mask |= bit; | |
1628 | } | |
1629 | break; | |
1630 | case STA_NOTIFY_AWAKE: | |
1631 | if (prev) { | |
1632 | priv->sta_asleep_mask &= ~bit; | |
1633 | priv->pspoll_mask &= ~bit; | |
1634 | if (priv->tx_multicast && link_id && | |
1635 | !priv->sta_asleep_mask) | |
1636 | queue_work(priv->workqueue, | |
1637 | &priv->multicast_stop_work); | |
1638 | cw1200_bh_wakeup(priv); | |
1639 | } | |
1640 | break; | |
1641 | } | |
1642 | } | |
1643 | ||
1644 | void cw1200_sta_notify(struct ieee80211_hw *dev, | |
1645 | struct ieee80211_vif *vif, | |
1646 | enum sta_notify_cmd notify_cmd, | |
1647 | struct ieee80211_sta *sta) | |
1648 | { | |
1649 | struct cw1200_common *priv = dev->priv; | |
1650 | struct cw1200_sta_priv *sta_priv = | |
1651 | (struct cw1200_sta_priv *)&sta->drv_priv; | |
1652 | ||
1653 | spin_lock_bh(&priv->ps_state_lock); | |
1654 | __cw1200_sta_notify(dev, vif, notify_cmd, sta_priv->link_id); | |
1655 | spin_unlock_bh(&priv->ps_state_lock); | |
1656 | } | |
1657 | ||
1658 | static void cw1200_ps_notify(struct cw1200_common *priv, | |
1659 | int link_id, bool ps) | |
1660 | { | |
1661 | if (link_id > CW1200_MAX_STA_IN_AP_MODE) | |
1662 | return; | |
1663 | ||
1664 | pr_debug("%s for LinkId: %d. STAs asleep: %.8X\n", | |
1665 | ps ? "Stop" : "Start", | |
1666 | link_id, priv->sta_asleep_mask); | |
1667 | ||
1668 | __cw1200_sta_notify(priv->hw, priv->vif, | |
1669 | ps ? STA_NOTIFY_SLEEP : STA_NOTIFY_AWAKE, link_id); | |
1670 | } | |
1671 | ||
1672 | static int cw1200_set_tim_impl(struct cw1200_common *priv, bool aid0_bit_set) | |
1673 | { | |
1674 | struct sk_buff *skb; | |
1675 | struct wsm_update_ie update_ie = { | |
1676 | .what = WSM_UPDATE_IE_BEACON, | |
1677 | .count = 1, | |
1678 | }; | |
1679 | u16 tim_offset, tim_length; | |
1680 | ||
1681 | pr_debug("[AP] mcast: %s.\n", aid0_bit_set ? "ena" : "dis"); | |
1682 | ||
1683 | skb = ieee80211_beacon_get_tim(priv->hw, priv->vif, | |
1684 | &tim_offset, &tim_length); | |
1685 | if (!skb) { | |
1686 | if (!__cw1200_flush(priv, true)) | |
1687 | wsm_unlock_tx(priv); | |
1688 | return -ENOENT; | |
1689 | } | |
1690 | ||
1691 | if (tim_offset && tim_length >= 6) { | |
1692 | /* Ignore DTIM count from mac80211: | |
1693 | * firmware handles DTIM internally. | |
1694 | */ | |
1695 | skb->data[tim_offset + 2] = 0; | |
1696 | ||
1697 | /* Set/reset aid0 bit */ | |
1698 | if (aid0_bit_set) | |
1699 | skb->data[tim_offset + 4] |= 1; | |
1700 | else | |
1701 | skb->data[tim_offset + 4] &= ~1; | |
1702 | } | |
1703 | ||
1704 | update_ie.ies = &skb->data[tim_offset]; | |
1705 | update_ie.length = tim_length; | |
1706 | wsm_update_ie(priv, &update_ie); | |
1707 | ||
1708 | dev_kfree_skb(skb); | |
1709 | ||
1710 | return 0; | |
1711 | } | |
1712 | ||
1713 | void cw1200_set_tim_work(struct work_struct *work) | |
1714 | { | |
1715 | struct cw1200_common *priv = | |
1716 | container_of(work, struct cw1200_common, set_tim_work); | |
1717 | (void)cw1200_set_tim_impl(priv, priv->aid0_bit_set); | |
1718 | } | |
1719 | ||
1720 | int cw1200_set_tim(struct ieee80211_hw *dev, struct ieee80211_sta *sta, | |
1721 | bool set) | |
1722 | { | |
1723 | struct cw1200_common *priv = dev->priv; | |
1724 | queue_work(priv->workqueue, &priv->set_tim_work); | |
1725 | return 0; | |
1726 | } | |
1727 | ||
1728 | void cw1200_set_cts_work(struct work_struct *work) | |
1729 | { | |
1730 | struct cw1200_common *priv = | |
1731 | container_of(work, struct cw1200_common, set_cts_work); | |
1732 | ||
1733 | u8 erp_ie[3] = {WLAN_EID_ERP_INFO, 0x1, 0}; | |
1734 | struct wsm_update_ie update_ie = { | |
1735 | .what = WSM_UPDATE_IE_BEACON, | |
1736 | .count = 1, | |
1737 | .ies = erp_ie, | |
1738 | .length = 3, | |
1739 | }; | |
1740 | u32 erp_info; | |
1741 | __le32 use_cts_prot; | |
1742 | mutex_lock(&priv->conf_mutex); | |
1743 | erp_info = priv->erp_info; | |
1744 | mutex_unlock(&priv->conf_mutex); | |
1745 | use_cts_prot = | |
1746 | erp_info & WLAN_ERP_USE_PROTECTION ? | |
1747 | __cpu_to_le32(1) : 0; | |
1748 | ||
1749 | erp_ie[ERP_INFO_BYTE_OFFSET] = erp_info; | |
1750 | ||
1751 | pr_debug("[STA] ERP information 0x%x\n", erp_info); | |
1752 | ||
1753 | wsm_write_mib(priv, WSM_MIB_ID_NON_ERP_PROTECTION, | |
1754 | &use_cts_prot, sizeof(use_cts_prot)); | |
1755 | wsm_update_ie(priv, &update_ie); | |
1756 | ||
1757 | return; | |
1758 | } | |
1759 | ||
1760 | static int cw1200_set_btcoexinfo(struct cw1200_common *priv) | |
1761 | { | |
1762 | struct wsm_override_internal_txrate arg; | |
1763 | int ret = 0; | |
1764 | ||
1765 | if (priv->mode == NL80211_IFTYPE_STATION) { | |
1766 | /* Plumb PSPOLL and NULL template */ | |
1767 | cw1200_upload_pspoll(priv); | |
1768 | cw1200_upload_null(priv); | |
1769 | cw1200_upload_qosnull(priv); | |
1770 | } else { | |
1771 | return 0; | |
1772 | } | |
1773 | ||
1774 | memset(&arg, 0, sizeof(struct wsm_override_internal_txrate)); | |
1775 | ||
1776 | if (!priv->vif->p2p) { | |
1777 | /* STATION mode */ | |
1778 | if (priv->bss_params.operational_rate_set & ~0xF) { | |
1779 | pr_debug("[STA] STA has ERP rates\n"); | |
1780 | /* G or BG mode */ | |
1781 | arg.internalTxRate = (__ffs( | |
1782 | priv->bss_params.operational_rate_set & ~0xF)); | |
1783 | } else { | |
1784 | pr_debug("[STA] STA has non ERP rates\n"); | |
1785 | /* B only mode */ | |
7258416c | 1786 | arg.internalTxRate = (__ffs(le32_to_cpu(priv->association_mode.basic_rate_set))); |
a910e4a9 | 1787 | } |
7258416c | 1788 | arg.nonErpInternalTxRate = (__ffs(le32_to_cpu(priv->association_mode.basic_rate_set))); |
a910e4a9 SP |
1789 | } else { |
1790 | /* P2P mode */ | |
1791 | arg.internalTxRate = (__ffs(priv->bss_params.operational_rate_set & ~0xF)); | |
1792 | arg.nonErpInternalTxRate = (__ffs(priv->bss_params.operational_rate_set & ~0xF)); | |
1793 | } | |
1794 | ||
1795 | pr_debug("[STA] BTCOEX_INFO MODE %d, internalTxRate : %x, nonErpInternalTxRate: %x\n", | |
1796 | priv->mode, | |
1797 | arg.internalTxRate, | |
1798 | arg.nonErpInternalTxRate); | |
1799 | ||
1800 | ret = wsm_write_mib(priv, WSM_MIB_ID_OVERRIDE_INTERNAL_TX_RATE, | |
1801 | &arg, sizeof(arg)); | |
1802 | ||
1803 | return ret; | |
1804 | } | |
1805 | ||
1806 | void cw1200_bss_info_changed(struct ieee80211_hw *dev, | |
1807 | struct ieee80211_vif *vif, | |
1808 | struct ieee80211_bss_conf *info, | |
1809 | u32 changed) | |
1810 | { | |
1811 | struct cw1200_common *priv = dev->priv; | |
1812 | bool do_join = false; | |
1813 | ||
1814 | mutex_lock(&priv->conf_mutex); | |
1815 | ||
1816 | pr_debug("BSS CHANGED: %08x\n", changed); | |
1817 | ||
1818 | /* TODO: BSS_CHANGED_QOS */ | |
1819 | /* TODO: BSS_CHANGED_TXPOWER */ | |
1820 | ||
1821 | if (changed & BSS_CHANGED_ARP_FILTER) { | |
1822 | struct wsm_mib_arp_ipv4_filter filter = {0}; | |
1823 | int i; | |
1824 | ||
1825 | pr_debug("[STA] BSS_CHANGED_ARP_FILTER cnt: %d\n", | |
1826 | info->arp_addr_cnt); | |
1827 | ||
1828 | /* Currently only one IP address is supported by firmware. | |
1829 | * In case of more IPs arp filtering will be disabled. | |
1830 | */ | |
1831 | if (info->arp_addr_cnt > 0 && | |
1832 | info->arp_addr_cnt <= WSM_MAX_ARP_IP_ADDRTABLE_ENTRIES) { | |
1833 | for (i = 0; i < info->arp_addr_cnt; i++) { | |
1834 | filter.ipv4addrs[i] = info->arp_addr_list[i]; | |
1835 | pr_debug("[STA] addr[%d]: 0x%X\n", | |
1836 | i, filter.ipv4addrs[i]); | |
1837 | } | |
1838 | filter.enable = __cpu_to_le32(1); | |
1839 | } | |
1840 | ||
1841 | pr_debug("[STA] arp ip filter enable: %d\n", | |
1842 | __le32_to_cpu(filter.enable)); | |
1843 | ||
1844 | wsm_set_arp_ipv4_filter(priv, &filter); | |
1845 | } | |
1846 | ||
1847 | if (changed & | |
1848 | (BSS_CHANGED_BEACON | | |
1849 | BSS_CHANGED_AP_PROBE_RESP | | |
1850 | BSS_CHANGED_BSSID | | |
1851 | BSS_CHANGED_SSID | | |
1852 | BSS_CHANGED_IBSS)) { | |
1853 | pr_debug("BSS_CHANGED_BEACON\n"); | |
1854 | priv->beacon_int = info->beacon_int; | |
1855 | cw1200_update_beaconing(priv); | |
1856 | cw1200_upload_beacon(priv); | |
1857 | } | |
1858 | ||
1859 | if (changed & BSS_CHANGED_BEACON_ENABLED) { | |
1860 | pr_debug("BSS_CHANGED_BEACON_ENABLED (%d)\n", info->enable_beacon); | |
1861 | ||
1862 | if (priv->enable_beacon != info->enable_beacon) { | |
1863 | cw1200_enable_beaconing(priv, info->enable_beacon); | |
1864 | priv->enable_beacon = info->enable_beacon; | |
1865 | } | |
1866 | } | |
1867 | ||
1868 | if (changed & BSS_CHANGED_BEACON_INT) { | |
1869 | pr_debug("CHANGED_BEACON_INT\n"); | |
1870 | if (info->ibss_joined) | |
1871 | do_join = true; | |
1872 | else if (priv->join_status == CW1200_JOIN_STATUS_AP) | |
1873 | cw1200_update_beaconing(priv); | |
1874 | } | |
1875 | ||
1876 | /* assoc/disassoc, or maybe AID changed */ | |
1877 | if (changed & BSS_CHANGED_ASSOC) { | |
1878 | wsm_lock_tx(priv); | |
1879 | priv->wep_default_key_id = -1; | |
1880 | wsm_unlock_tx(priv); | |
1881 | } | |
1882 | ||
1883 | if (changed & BSS_CHANGED_BSSID) { | |
1884 | pr_debug("BSS_CHANGED_BSSID\n"); | |
1885 | do_join = true; | |
1886 | } | |
1887 | ||
1888 | if (changed & | |
1889 | (BSS_CHANGED_ASSOC | | |
1890 | BSS_CHANGED_BSSID | | |
1891 | BSS_CHANGED_IBSS | | |
1892 | BSS_CHANGED_BASIC_RATES | | |
1893 | BSS_CHANGED_HT)) { | |
1894 | pr_debug("BSS_CHANGED_ASSOC\n"); | |
1895 | if (info->assoc) { | |
1896 | if (priv->join_status < CW1200_JOIN_STATUS_PRE_STA) { | |
1897 | ieee80211_connection_loss(vif); | |
1898 | mutex_unlock(&priv->conf_mutex); | |
1899 | return; | |
1900 | } else if (priv->join_status == CW1200_JOIN_STATUS_PRE_STA) { | |
1901 | priv->join_status = CW1200_JOIN_STATUS_STA; | |
1902 | } | |
1903 | } else { | |
1904 | do_join = true; | |
1905 | } | |
1906 | ||
1907 | if (info->assoc || info->ibss_joined) { | |
1908 | struct ieee80211_sta *sta = NULL; | |
7258416c | 1909 | __le32 htprot = 0; |
a910e4a9 SP |
1910 | |
1911 | if (info->dtim_period) | |
1912 | priv->join_dtim_period = info->dtim_period; | |
1913 | priv->beacon_int = info->beacon_int; | |
1914 | ||
1915 | rcu_read_lock(); | |
1916 | ||
1917 | if (info->bssid && !info->ibss_joined) | |
1918 | sta = ieee80211_find_sta(vif, info->bssid); | |
1919 | if (sta) { | |
1920 | priv->ht_info.ht_cap = sta->ht_cap; | |
1921 | priv->bss_params.operational_rate_set = | |
1922 | cw1200_rate_mask_to_wsm(priv, | |
1923 | sta->supp_rates[priv->channel->band]); | |
1924 | priv->ht_info.channel_type = cfg80211_get_chandef_type(&dev->conf.chandef); | |
1925 | priv->ht_info.operation_mode = info->ht_operation_mode; | |
1926 | } else { | |
1927 | memset(&priv->ht_info, 0, | |
1928 | sizeof(priv->ht_info)); | |
1929 | priv->bss_params.operational_rate_set = -1; | |
1930 | } | |
1931 | rcu_read_unlock(); | |
1932 | ||
1933 | /* Non Greenfield stations present */ | |
1934 | if (priv->ht_info.operation_mode & | |
1935 | IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT) | |
7258416c | 1936 | htprot |= cpu_to_le32(WSM_NON_GREENFIELD_STA_PRESENT); |
a910e4a9 SP |
1937 | |
1938 | /* Set HT protection method */ | |
7258416c | 1939 | htprot |= cpu_to_le32((priv->ht_info.operation_mode & IEEE80211_HT_OP_MODE_PROTECTION) << 2); |
a910e4a9 SP |
1940 | |
1941 | /* TODO: | |
1942 | * STBC_param.dual_cts | |
1943 | * STBC_param.LSIG_TXOP_FILL | |
1944 | */ | |
1945 | ||
a910e4a9 | 1946 | wsm_write_mib(priv, WSM_MIB_ID_SET_HT_PROTECTION, |
7258416c | 1947 | &htprot, sizeof(htprot)); |
a910e4a9 SP |
1948 | |
1949 | priv->association_mode.greenfield = | |
1950 | cw1200_ht_greenfield(&priv->ht_info); | |
1951 | priv->association_mode.flags = | |
1952 | WSM_ASSOCIATION_MODE_SNOOP_ASSOC_FRAMES | | |
1953 | WSM_ASSOCIATION_MODE_USE_PREAMBLE_TYPE | | |
1954 | WSM_ASSOCIATION_MODE_USE_HT_MODE | | |
1955 | WSM_ASSOCIATION_MODE_USE_BASIC_RATE_SET | | |
1956 | WSM_ASSOCIATION_MODE_USE_MPDU_START_SPACING; | |
1957 | priv->association_mode.preamble = | |
1958 | info->use_short_preamble ? | |
1959 | WSM_JOIN_PREAMBLE_SHORT : | |
1960 | WSM_JOIN_PREAMBLE_LONG; | |
1961 | priv->association_mode.basic_rate_set = __cpu_to_le32( | |
1962 | cw1200_rate_mask_to_wsm(priv, | |
1963 | info->basic_rates)); | |
1964 | priv->association_mode.mpdu_start_spacing = | |
1965 | cw1200_ht_ampdu_density(&priv->ht_info); | |
1966 | ||
1967 | cw1200_cqm_bssloss_sm(priv, 0, 0, 0); | |
1968 | cancel_work_sync(&priv->unjoin_work); | |
1969 | ||
1970 | priv->bss_params.beacon_lost_count = priv->cqm_beacon_loss_count; | |
1971 | priv->bss_params.aid = info->aid; | |
1972 | ||
1973 | if (priv->join_dtim_period < 1) | |
1974 | priv->join_dtim_period = 1; | |
1975 | ||
1976 | pr_debug("[STA] DTIM %d, interval: %d\n", | |
1977 | priv->join_dtim_period, priv->beacon_int); | |
1978 | pr_debug("[STA] Preamble: %d, Greenfield: %d, Aid: %d, Rates: 0x%.8X, Basic: 0x%.8X\n", | |
1979 | priv->association_mode.preamble, | |
1980 | priv->association_mode.greenfield, | |
1981 | priv->bss_params.aid, | |
1982 | priv->bss_params.operational_rate_set, | |
1983 | priv->association_mode.basic_rate_set); | |
1984 | wsm_set_association_mode(priv, &priv->association_mode); | |
1985 | ||
1986 | if (!info->ibss_joined) { | |
1987 | wsm_keep_alive_period(priv, 30 /* sec */); | |
1988 | wsm_set_bss_params(priv, &priv->bss_params); | |
1989 | priv->setbssparams_done = true; | |
1990 | cw1200_set_beacon_wakeup_period_work(&priv->set_beacon_wakeup_period_work); | |
1991 | cw1200_set_pm(priv, &priv->powersave_mode); | |
1992 | } | |
1993 | if (priv->vif->p2p) { | |
1994 | pr_debug("[STA] Setting p2p powersave configuration.\n"); | |
1995 | wsm_set_p2p_ps_modeinfo(priv, | |
1996 | &priv->p2p_ps_modeinfo); | |
1997 | } | |
1998 | if (priv->bt_present) | |
1999 | cw1200_set_btcoexinfo(priv); | |
2000 | } else { | |
2001 | memset(&priv->association_mode, 0, | |
2002 | sizeof(priv->association_mode)); | |
2003 | memset(&priv->bss_params, 0, sizeof(priv->bss_params)); | |
2004 | } | |
2005 | } | |
2006 | ||
2007 | /* ERP Protection */ | |
2008 | if (changed & (BSS_CHANGED_ASSOC | | |
2009 | BSS_CHANGED_ERP_CTS_PROT | | |
2010 | BSS_CHANGED_ERP_PREAMBLE)) { | |
2011 | u32 prev_erp_info = priv->erp_info; | |
2012 | if (info->use_cts_prot) | |
2013 | priv->erp_info |= WLAN_ERP_USE_PROTECTION; | |
2014 | else if (!(prev_erp_info & WLAN_ERP_NON_ERP_PRESENT)) | |
2015 | priv->erp_info &= ~WLAN_ERP_USE_PROTECTION; | |
2016 | ||
2017 | if (info->use_short_preamble) | |
2018 | priv->erp_info |= WLAN_ERP_BARKER_PREAMBLE; | |
2019 | else | |
2020 | priv->erp_info &= ~WLAN_ERP_BARKER_PREAMBLE; | |
2021 | ||
2022 | pr_debug("[STA] ERP Protection: %x\n", priv->erp_info); | |
2023 | ||
2024 | if (prev_erp_info != priv->erp_info) | |
2025 | queue_work(priv->workqueue, &priv->set_cts_work); | |
2026 | } | |
2027 | ||
2028 | /* ERP Slottime */ | |
2029 | if (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_ERP_SLOT)) { | |
2030 | __le32 slot_time = info->use_short_slot ? | |
2031 | __cpu_to_le32(9) : __cpu_to_le32(20); | |
2032 | pr_debug("[STA] Slot time: %d us.\n", | |
2033 | __le32_to_cpu(slot_time)); | |
2034 | wsm_write_mib(priv, WSM_MIB_ID_DOT11_SLOT_TIME, | |
2035 | &slot_time, sizeof(slot_time)); | |
2036 | } | |
2037 | ||
2038 | if (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_CQM)) { | |
2039 | struct wsm_rcpi_rssi_threshold threshold = { | |
2040 | .rollingAverageCount = 8, | |
2041 | }; | |
2042 | pr_debug("[CQM] RSSI threshold subscribe: %d +- %d\n", | |
2043 | info->cqm_rssi_thold, info->cqm_rssi_hyst); | |
2044 | priv->cqm_rssi_thold = info->cqm_rssi_thold; | |
2045 | priv->cqm_rssi_hyst = info->cqm_rssi_hyst; | |
2046 | ||
2047 | if (info->cqm_rssi_thold || info->cqm_rssi_hyst) { | |
2048 | /* RSSI subscription enabled */ | |
2049 | /* TODO: It's not a correct way of setting threshold. | |
2050 | * Upper and lower must be set equal here and adjusted | |
2051 | * in callback. However current implementation is much | |
2052 | * more relaible and stable. | |
2053 | */ | |
2054 | ||
2055 | /* RSSI: signed Q8.0, RCPI: unsigned Q7.1 | |
2056 | * RSSI = RCPI / 2 - 110 | |
2057 | */ | |
2058 | if (priv->cqm_use_rssi) { | |
2059 | threshold.upperThreshold = | |
2060 | info->cqm_rssi_thold + info->cqm_rssi_hyst; | |
2061 | threshold.lowerThreshold = | |
2062 | info->cqm_rssi_thold; | |
2063 | threshold.rssiRcpiMode |= WSM_RCPI_RSSI_USE_RSSI; | |
2064 | } else { | |
2065 | threshold.upperThreshold = (info->cqm_rssi_thold + info->cqm_rssi_hyst + 110) * 2; | |
2066 | threshold.lowerThreshold = (info->cqm_rssi_thold + 110) * 2; | |
2067 | } | |
2068 | threshold.rssiRcpiMode |= WSM_RCPI_RSSI_THRESHOLD_ENABLE; | |
2069 | } else { | |
2070 | /* There is a bug in FW, see sta.c. We have to enable | |
2071 | * dummy subscription to get correct RSSI values. | |
2072 | */ | |
2073 | threshold.rssiRcpiMode |= | |
2074 | WSM_RCPI_RSSI_THRESHOLD_ENABLE | | |
2075 | WSM_RCPI_RSSI_DONT_USE_UPPER | | |
2076 | WSM_RCPI_RSSI_DONT_USE_LOWER; | |
2077 | if (priv->cqm_use_rssi) | |
2078 | threshold.rssiRcpiMode |= WSM_RCPI_RSSI_USE_RSSI; | |
2079 | } | |
2080 | wsm_set_rcpi_rssi_threshold(priv, &threshold); | |
2081 | } | |
2082 | mutex_unlock(&priv->conf_mutex); | |
2083 | ||
2084 | if (do_join) { | |
2085 | wsm_lock_tx(priv); | |
2086 | cw1200_do_join(priv); /* Will unlock it for us */ | |
2087 | } | |
2088 | } | |
2089 | ||
2090 | void cw1200_multicast_start_work(struct work_struct *work) | |
2091 | { | |
2092 | struct cw1200_common *priv = | |
2093 | container_of(work, struct cw1200_common, multicast_start_work); | |
2094 | long tmo = priv->join_dtim_period * | |
2095 | (priv->beacon_int + 20) * HZ / 1024; | |
2096 | ||
2097 | cancel_work_sync(&priv->multicast_stop_work); | |
2098 | ||
2099 | if (!priv->aid0_bit_set) { | |
2100 | wsm_lock_tx(priv); | |
2101 | cw1200_set_tim_impl(priv, true); | |
2102 | priv->aid0_bit_set = true; | |
2103 | mod_timer(&priv->mcast_timeout, jiffies + tmo); | |
2104 | wsm_unlock_tx(priv); | |
2105 | } | |
2106 | } | |
2107 | ||
2108 | void cw1200_multicast_stop_work(struct work_struct *work) | |
2109 | { | |
2110 | struct cw1200_common *priv = | |
2111 | container_of(work, struct cw1200_common, multicast_stop_work); | |
2112 | ||
2113 | if (priv->aid0_bit_set) { | |
2114 | del_timer_sync(&priv->mcast_timeout); | |
2115 | wsm_lock_tx(priv); | |
2116 | priv->aid0_bit_set = false; | |
2117 | cw1200_set_tim_impl(priv, false); | |
2118 | wsm_unlock_tx(priv); | |
2119 | } | |
2120 | } | |
2121 | ||
2122 | void cw1200_mcast_timeout(unsigned long arg) | |
2123 | { | |
2124 | struct cw1200_common *priv = | |
2125 | (struct cw1200_common *)arg; | |
2126 | ||
2127 | wiphy_warn(priv->hw->wiphy, | |
2128 | "Multicast delivery timeout.\n"); | |
2129 | spin_lock_bh(&priv->ps_state_lock); | |
2130 | priv->tx_multicast = priv->aid0_bit_set && | |
2131 | priv->buffered_multicasts; | |
2132 | if (priv->tx_multicast) | |
2133 | cw1200_bh_wakeup(priv); | |
2134 | spin_unlock_bh(&priv->ps_state_lock); | |
2135 | } | |
2136 | ||
2137 | int cw1200_ampdu_action(struct ieee80211_hw *hw, | |
2138 | struct ieee80211_vif *vif, | |
2139 | enum ieee80211_ampdu_mlme_action action, | |
2140 | struct ieee80211_sta *sta, u16 tid, u16 *ssn, | |
2141 | u8 buf_size) | |
2142 | { | |
2143 | /* Aggregation is implemented fully in firmware, | |
2144 | * including block ack negotiation. Do not allow | |
2145 | * mac80211 stack to do anything: it interferes with | |
2146 | * the firmware. | |
2147 | */ | |
2148 | ||
2149 | /* Note that we still need this function stubbed. */ | |
2150 | return -ENOTSUPP; | |
2151 | } | |
2152 | ||
2153 | /* ******************************************************************** */ | |
2154 | /* WSM callback */ | |
2155 | void cw1200_suspend_resume(struct cw1200_common *priv, | |
2156 | struct wsm_suspend_resume *arg) | |
2157 | { | |
2158 | pr_debug("[AP] %s: %s\n", | |
2159 | arg->stop ? "stop" : "start", | |
2160 | arg->multicast ? "broadcast" : "unicast"); | |
2161 | ||
2162 | if (arg->multicast) { | |
2163 | bool cancel_tmo = false; | |
2164 | spin_lock_bh(&priv->ps_state_lock); | |
2165 | if (arg->stop) { | |
2166 | priv->tx_multicast = false; | |
2167 | } else { | |
2168 | /* Firmware sends this indication every DTIM if there | |
2169 | * is a STA in powersave connected. There is no reason | |
2170 | * to suspend, following wakeup will consume much more | |
2171 | * power than it could be saved. | |
2172 | */ | |
2173 | cw1200_pm_stay_awake(&priv->pm_state, | |
2174 | priv->join_dtim_period * | |
2175 | (priv->beacon_int + 20) * HZ / 1024); | |
2176 | priv->tx_multicast = (priv->aid0_bit_set && | |
2177 | priv->buffered_multicasts); | |
2178 | if (priv->tx_multicast) { | |
2179 | cancel_tmo = true; | |
2180 | cw1200_bh_wakeup(priv); | |
2181 | } | |
2182 | } | |
2183 | spin_unlock_bh(&priv->ps_state_lock); | |
2184 | if (cancel_tmo) | |
2185 | del_timer_sync(&priv->mcast_timeout); | |
2186 | } else { | |
2187 | spin_lock_bh(&priv->ps_state_lock); | |
2188 | cw1200_ps_notify(priv, arg->link_id, arg->stop); | |
2189 | spin_unlock_bh(&priv->ps_state_lock); | |
2190 | if (!arg->stop) | |
2191 | cw1200_bh_wakeup(priv); | |
2192 | } | |
2193 | return; | |
2194 | } | |
2195 | ||
2196 | /* ******************************************************************** */ | |
2197 | /* AP privates */ | |
2198 | ||
2199 | static int cw1200_upload_beacon(struct cw1200_common *priv) | |
2200 | { | |
2201 | int ret = 0; | |
2202 | struct ieee80211_mgmt *mgmt; | |
2203 | struct wsm_template_frame frame = { | |
2204 | .frame_type = WSM_FRAME_TYPE_BEACON, | |
2205 | }; | |
2206 | ||
2207 | u16 tim_offset; | |
2208 | u16 tim_len; | |
2209 | ||
2210 | if (priv->mode == NL80211_IFTYPE_STATION || | |
2211 | priv->mode == NL80211_IFTYPE_MONITOR || | |
2212 | priv->mode == NL80211_IFTYPE_UNSPECIFIED) | |
2213 | goto done; | |
2214 | ||
2215 | if (priv->vif->p2p) | |
2216 | frame.rate = WSM_TRANSMIT_RATE_6; | |
2217 | ||
2218 | frame.skb = ieee80211_beacon_get_tim(priv->hw, priv->vif, | |
2219 | &tim_offset, &tim_len); | |
2220 | if (!frame.skb) | |
2221 | return -ENOMEM; | |
2222 | ||
2223 | ret = wsm_set_template_frame(priv, &frame); | |
2224 | ||
2225 | if (ret) | |
2226 | goto done; | |
2227 | ||
2228 | /* TODO: Distill probe resp; remove TIM | |
2229 | * and any other beacon-specific IEs | |
2230 | */ | |
2231 | mgmt = (void *)frame.skb->data; | |
2232 | mgmt->frame_control = | |
2233 | __cpu_to_le16(IEEE80211_FTYPE_MGMT | | |
2234 | IEEE80211_STYPE_PROBE_RESP); | |
2235 | ||
2236 | frame.frame_type = WSM_FRAME_TYPE_PROBE_RESPONSE; | |
2237 | if (priv->vif->p2p) { | |
2238 | ret = wsm_set_probe_responder(priv, true); | |
2239 | } else { | |
2240 | ret = wsm_set_template_frame(priv, &frame); | |
2241 | wsm_set_probe_responder(priv, false); | |
2242 | } | |
2243 | ||
2244 | done: | |
2245 | dev_kfree_skb(frame.skb); | |
2246 | ||
2247 | return ret; | |
2248 | } | |
2249 | ||
2250 | static int cw1200_upload_pspoll(struct cw1200_common *priv) | |
2251 | { | |
2252 | int ret = 0; | |
2253 | struct wsm_template_frame frame = { | |
2254 | .frame_type = WSM_FRAME_TYPE_PS_POLL, | |
2255 | .rate = 0xFF, | |
2256 | }; | |
2257 | ||
2258 | ||
2259 | frame.skb = ieee80211_pspoll_get(priv->hw, priv->vif); | |
2260 | if (!frame.skb) | |
2261 | return -ENOMEM; | |
2262 | ||
2263 | ret = wsm_set_template_frame(priv, &frame); | |
2264 | ||
2265 | dev_kfree_skb(frame.skb); | |
2266 | ||
2267 | return ret; | |
2268 | } | |
2269 | ||
2270 | static int cw1200_upload_null(struct cw1200_common *priv) | |
2271 | { | |
2272 | int ret = 0; | |
2273 | struct wsm_template_frame frame = { | |
2274 | .frame_type = WSM_FRAME_TYPE_NULL, | |
2275 | .rate = 0xFF, | |
2276 | }; | |
2277 | ||
2278 | frame.skb = ieee80211_nullfunc_get(priv->hw, priv->vif); | |
2279 | if (!frame.skb) | |
2280 | return -ENOMEM; | |
2281 | ||
2282 | ret = wsm_set_template_frame(priv, &frame); | |
2283 | ||
2284 | dev_kfree_skb(frame.skb); | |
2285 | ||
2286 | return ret; | |
2287 | } | |
2288 | ||
2289 | static int cw1200_upload_qosnull(struct cw1200_common *priv) | |
2290 | { | |
2291 | int ret = 0; | |
2292 | /* TODO: This needs to be implemented | |
2293 | ||
2294 | struct wsm_template_frame frame = { | |
2295 | .frame_type = WSM_FRAME_TYPE_QOS_NULL, | |
2296 | .rate = 0xFF, | |
2297 | }; | |
2298 | ||
2299 | frame.skb = ieee80211_qosnullfunc_get(priv->hw, priv->vif); | |
2300 | if (!frame.skb) | |
2301 | return -ENOMEM; | |
2302 | ||
2303 | ret = wsm_set_template_frame(priv, &frame); | |
2304 | ||
2305 | dev_kfree_skb(frame.skb); | |
2306 | ||
2307 | */ | |
2308 | return ret; | |
2309 | } | |
2310 | ||
2311 | static int cw1200_enable_beaconing(struct cw1200_common *priv, | |
2312 | bool enable) | |
2313 | { | |
2314 | struct wsm_beacon_transmit transmit = { | |
2315 | .enable_beaconing = enable, | |
2316 | }; | |
2317 | ||
2318 | return wsm_beacon_transmit(priv, &transmit); | |
2319 | } | |
2320 | ||
2321 | static int cw1200_start_ap(struct cw1200_common *priv) | |
2322 | { | |
2323 | int ret; | |
2324 | struct ieee80211_bss_conf *conf = &priv->vif->bss_conf; | |
2325 | struct wsm_start start = { | |
2326 | .mode = priv->vif->p2p ? | |
2327 | WSM_START_MODE_P2P_GO : WSM_START_MODE_AP, | |
2328 | .band = (priv->channel->band == IEEE80211_BAND_5GHZ) ? | |
2329 | WSM_PHY_BAND_5G : WSM_PHY_BAND_2_4G, | |
2330 | .channel_number = priv->channel->hw_value, | |
2331 | .beacon_interval = conf->beacon_int, | |
2332 | .dtim_period = conf->dtim_period, | |
2333 | .preamble = conf->use_short_preamble ? | |
2334 | WSM_JOIN_PREAMBLE_SHORT : | |
2335 | WSM_JOIN_PREAMBLE_LONG, | |
2336 | .probe_delay = 100, | |
2337 | .basic_rate_set = cw1200_rate_mask_to_wsm(priv, | |
2338 | conf->basic_rates), | |
2339 | }; | |
2340 | struct wsm_operational_mode mode = { | |
2341 | .power_mode = cw1200_power_mode, | |
2342 | .disable_more_flag_usage = true, | |
2343 | }; | |
2344 | ||
2345 | memset(start.ssid, 0, sizeof(start.ssid)); | |
2346 | if (!conf->hidden_ssid) { | |
2347 | start.ssid_len = conf->ssid_len; | |
2348 | memcpy(start.ssid, conf->ssid, start.ssid_len); | |
2349 | } | |
2350 | ||
2351 | priv->beacon_int = conf->beacon_int; | |
2352 | priv->join_dtim_period = conf->dtim_period; | |
2353 | ||
2354 | memset(&priv->link_id_db, 0, sizeof(priv->link_id_db)); | |
2355 | ||
2356 | pr_debug("[AP] ch: %d(%d), bcn: %d(%d), brt: 0x%.8X, ssid: %.*s.\n", | |
2357 | start.channel_number, start.band, | |
2358 | start.beacon_interval, start.dtim_period, | |
2359 | start.basic_rate_set, | |
2360 | start.ssid_len, start.ssid); | |
2361 | ret = wsm_start(priv, &start); | |
2362 | if (!ret) | |
2363 | ret = cw1200_upload_keys(priv); | |
2364 | if (!ret && priv->vif->p2p) { | |
2365 | pr_debug("[AP] Setting p2p powersave configuration.\n"); | |
2366 | wsm_set_p2p_ps_modeinfo(priv, &priv->p2p_ps_modeinfo); | |
2367 | } | |
2368 | if (!ret) { | |
2369 | wsm_set_block_ack_policy(priv, 0, 0); | |
2370 | priv->join_status = CW1200_JOIN_STATUS_AP; | |
2371 | cw1200_update_filtering(priv); | |
2372 | } | |
2373 | wsm_set_operational_mode(priv, &mode); | |
2374 | return ret; | |
2375 | } | |
2376 | ||
2377 | static int cw1200_update_beaconing(struct cw1200_common *priv) | |
2378 | { | |
2379 | struct ieee80211_bss_conf *conf = &priv->vif->bss_conf; | |
2380 | struct wsm_reset reset = { | |
2381 | .link_id = 0, | |
2382 | .reset_statistics = true, | |
2383 | }; | |
2384 | ||
2385 | if (priv->mode == NL80211_IFTYPE_AP) { | |
2386 | /* TODO: check if changed channel, band */ | |
2387 | if (priv->join_status != CW1200_JOIN_STATUS_AP || | |
2388 | priv->beacon_int != conf->beacon_int) { | |
2389 | pr_debug("ap restarting\n"); | |
2390 | wsm_lock_tx(priv); | |
2391 | if (priv->join_status != CW1200_JOIN_STATUS_PASSIVE) | |
2392 | wsm_reset(priv, &reset); | |
2393 | priv->join_status = CW1200_JOIN_STATUS_PASSIVE; | |
2394 | cw1200_start_ap(priv); | |
2395 | wsm_unlock_tx(priv); | |
2396 | } else | |
2397 | pr_debug("ap started join_status: %d\n", | |
2398 | priv->join_status); | |
2399 | } | |
2400 | return 0; | |
2401 | } |