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1/**
2 * Copyright (c) 2014 Redpine Signals Inc.
3 *
4 * Permission to use, copy, modify, and/or distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
7 *
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15 */
16
17#include <linux/etherdevice.h>
18#include "rsi_debugfs.h"
19#include "rsi_mgmt.h"
20#include "rsi_sdio.h"
21#include "rsi_common.h"
22#include "rsi_ps.h"
23
24static const struct ieee80211_channel rsi_2ghz_channels[] = {
25 { .band = NL80211_BAND_2GHZ, .center_freq = 2412,
26 .hw_value = 1 }, /* Channel 1 */
27 { .band = NL80211_BAND_2GHZ, .center_freq = 2417,
28 .hw_value = 2 }, /* Channel 2 */
29 { .band = NL80211_BAND_2GHZ, .center_freq = 2422,
30 .hw_value = 3 }, /* Channel 3 */
31 { .band = NL80211_BAND_2GHZ, .center_freq = 2427,
32 .hw_value = 4 }, /* Channel 4 */
33 { .band = NL80211_BAND_2GHZ, .center_freq = 2432,
34 .hw_value = 5 }, /* Channel 5 */
35 { .band = NL80211_BAND_2GHZ, .center_freq = 2437,
36 .hw_value = 6 }, /* Channel 6 */
37 { .band = NL80211_BAND_2GHZ, .center_freq = 2442,
38 .hw_value = 7 }, /* Channel 7 */
39 { .band = NL80211_BAND_2GHZ, .center_freq = 2447,
40 .hw_value = 8 }, /* Channel 8 */
41 { .band = NL80211_BAND_2GHZ, .center_freq = 2452,
42 .hw_value = 9 }, /* Channel 9 */
43 { .band = NL80211_BAND_2GHZ, .center_freq = 2457,
44 .hw_value = 10 }, /* Channel 10 */
45 { .band = NL80211_BAND_2GHZ, .center_freq = 2462,
46 .hw_value = 11 }, /* Channel 11 */
47 { .band = NL80211_BAND_2GHZ, .center_freq = 2467,
48 .hw_value = 12 }, /* Channel 12 */
49 { .band = NL80211_BAND_2GHZ, .center_freq = 2472,
50 .hw_value = 13 }, /* Channel 13 */
51 { .band = NL80211_BAND_2GHZ, .center_freq = 2484,
52 .hw_value = 14 }, /* Channel 14 */
53};
54
55static const struct ieee80211_channel rsi_5ghz_channels[] = {
56 { .band = NL80211_BAND_5GHZ, .center_freq = 5180,
57 .hw_value = 36, }, /* Channel 36 */
58 { .band = NL80211_BAND_5GHZ, .center_freq = 5200,
59 .hw_value = 40, }, /* Channel 40 */
60 { .band = NL80211_BAND_5GHZ, .center_freq = 5220,
61 .hw_value = 44, }, /* Channel 44 */
62 { .band = NL80211_BAND_5GHZ, .center_freq = 5240,
63 .hw_value = 48, }, /* Channel 48 */
64 { .band = NL80211_BAND_5GHZ, .center_freq = 5260,
65 .hw_value = 52, }, /* Channel 52 */
66 { .band = NL80211_BAND_5GHZ, .center_freq = 5280,
67 .hw_value = 56, }, /* Channel 56 */
68 { .band = NL80211_BAND_5GHZ, .center_freq = 5300,
69 .hw_value = 60, }, /* Channel 60 */
70 { .band = NL80211_BAND_5GHZ, .center_freq = 5320,
71 .hw_value = 64, }, /* Channel 64 */
72 { .band = NL80211_BAND_5GHZ, .center_freq = 5500,
73 .hw_value = 100, }, /* Channel 100 */
74 { .band = NL80211_BAND_5GHZ, .center_freq = 5520,
75 .hw_value = 104, }, /* Channel 104 */
76 { .band = NL80211_BAND_5GHZ, .center_freq = 5540,
77 .hw_value = 108, }, /* Channel 108 */
78 { .band = NL80211_BAND_5GHZ, .center_freq = 5560,
79 .hw_value = 112, }, /* Channel 112 */
80 { .band = NL80211_BAND_5GHZ, .center_freq = 5580,
81 .hw_value = 116, }, /* Channel 116 */
82 { .band = NL80211_BAND_5GHZ, .center_freq = 5600,
83 .hw_value = 120, }, /* Channel 120 */
84 { .band = NL80211_BAND_5GHZ, .center_freq = 5620,
85 .hw_value = 124, }, /* Channel 124 */
86 { .band = NL80211_BAND_5GHZ, .center_freq = 5640,
87 .hw_value = 128, }, /* Channel 128 */
88 { .band = NL80211_BAND_5GHZ, .center_freq = 5660,
89 .hw_value = 132, }, /* Channel 132 */
90 { .band = NL80211_BAND_5GHZ, .center_freq = 5680,
91 .hw_value = 136, }, /* Channel 136 */
92 { .band = NL80211_BAND_5GHZ, .center_freq = 5700,
93 .hw_value = 140, }, /* Channel 140 */
94 { .band = NL80211_BAND_5GHZ, .center_freq = 5745,
95 .hw_value = 149, }, /* Channel 149 */
96 { .band = NL80211_BAND_5GHZ, .center_freq = 5765,
97 .hw_value = 153, }, /* Channel 153 */
98 { .band = NL80211_BAND_5GHZ, .center_freq = 5785,
99 .hw_value = 157, }, /* Channel 157 */
100 { .band = NL80211_BAND_5GHZ, .center_freq = 5805,
101 .hw_value = 161, }, /* Channel 161 */
102 { .band = NL80211_BAND_5GHZ, .center_freq = 5825,
103 .hw_value = 165, }, /* Channel 165 */
104};
105
106struct ieee80211_rate rsi_rates[12] = {
107 { .bitrate = STD_RATE_01 * 5, .hw_value = RSI_RATE_1 },
108 { .bitrate = STD_RATE_02 * 5, .hw_value = RSI_RATE_2 },
109 { .bitrate = STD_RATE_5_5 * 5, .hw_value = RSI_RATE_5_5 },
110 { .bitrate = STD_RATE_11 * 5, .hw_value = RSI_RATE_11 },
111 { .bitrate = STD_RATE_06 * 5, .hw_value = RSI_RATE_6 },
112 { .bitrate = STD_RATE_09 * 5, .hw_value = RSI_RATE_9 },
113 { .bitrate = STD_RATE_12 * 5, .hw_value = RSI_RATE_12 },
114 { .bitrate = STD_RATE_18 * 5, .hw_value = RSI_RATE_18 },
115 { .bitrate = STD_RATE_24 * 5, .hw_value = RSI_RATE_24 },
116 { .bitrate = STD_RATE_36 * 5, .hw_value = RSI_RATE_36 },
117 { .bitrate = STD_RATE_48 * 5, .hw_value = RSI_RATE_48 },
118 { .bitrate = STD_RATE_54 * 5, .hw_value = RSI_RATE_54 },
119};
120
121const u16 rsi_mcsrates[8] = {
122 RSI_RATE_MCS0, RSI_RATE_MCS1, RSI_RATE_MCS2, RSI_RATE_MCS3,
123 RSI_RATE_MCS4, RSI_RATE_MCS5, RSI_RATE_MCS6, RSI_RATE_MCS7
124};
125
126static const u32 rsi_max_ap_stas[16] = {
127 32, /* 1 - Wi-Fi alone */
128 0, /* 2 */
129 0, /* 3 */
130 0, /* 4 - BT EDR alone */
131 4, /* 5 - STA + BT EDR */
132 32, /* 6 - AP + BT EDR */
133 0, /* 7 */
134 0, /* 8 - BT LE alone */
135 4, /* 9 - STA + BE LE */
136 0, /* 10 */
137 0, /* 11 */
138 0, /* 12 */
139 1, /* 13 - STA + BT Dual */
140 4, /* 14 - AP + BT Dual */
141};
142
143static const struct ieee80211_iface_limit rsi_iface_limits[] = {
144 {
145 .max = 1,
146 .types = BIT(NL80211_IFTYPE_STATION),
147 },
148 {
149 .max = 1,
150 .types = BIT(NL80211_IFTYPE_AP) |
151 BIT(NL80211_IFTYPE_P2P_CLIENT) |
152 BIT(NL80211_IFTYPE_P2P_GO),
153 },
154 {
155 .max = 1,
156 .types = BIT(NL80211_IFTYPE_P2P_DEVICE),
157 },
158};
159
160static const struct ieee80211_iface_combination rsi_iface_combinations[] = {
161 {
162 .num_different_channels = 1,
163 .max_interfaces = 3,
164 .limits = rsi_iface_limits,
165 .n_limits = ARRAY_SIZE(rsi_iface_limits),
166 },
167};
168
169/**
170 * rsi_is_cipher_wep() - This function determines if the cipher is WEP or not.
171 * @common: Pointer to the driver private structure.
172 *
173 * Return: If cipher type is WEP, a value of 1 is returned, else 0.
174 */
175
176bool rsi_is_cipher_wep(struct rsi_common *common)
177{
178 if (((common->secinfo.gtk_cipher == WLAN_CIPHER_SUITE_WEP104) ||
179 (common->secinfo.gtk_cipher == WLAN_CIPHER_SUITE_WEP40)) &&
180 (!common->secinfo.ptk_cipher))
181 return true;
182 else
183 return false;
184}
185
186/**
187 * rsi_register_rates_channels() - This function registers channels and rates.
188 * @adapter: Pointer to the adapter structure.
189 * @band: Operating band to be set.
190 *
191 * Return: None.
192 */
193static void rsi_register_rates_channels(struct rsi_hw *adapter, int band)
194{
195 struct ieee80211_supported_band *sbands = &adapter->sbands[band];
196 void *channels = NULL;
197
198 if (band == NL80211_BAND_2GHZ) {
199 channels = kmalloc(sizeof(rsi_2ghz_channels), GFP_KERNEL);
200 memcpy(channels,
201 rsi_2ghz_channels,
202 sizeof(rsi_2ghz_channels));
203 sbands->band = NL80211_BAND_2GHZ;
204 sbands->n_channels = ARRAY_SIZE(rsi_2ghz_channels);
205 sbands->bitrates = rsi_rates;
206 sbands->n_bitrates = ARRAY_SIZE(rsi_rates);
207 } else {
208 channels = kmalloc(sizeof(rsi_5ghz_channels), GFP_KERNEL);
209 memcpy(channels,
210 rsi_5ghz_channels,
211 sizeof(rsi_5ghz_channels));
212 sbands->band = NL80211_BAND_5GHZ;
213 sbands->n_channels = ARRAY_SIZE(rsi_5ghz_channels);
214 sbands->bitrates = &rsi_rates[4];
215 sbands->n_bitrates = ARRAY_SIZE(rsi_rates) - 4;
216 }
217
218 sbands->channels = channels;
219
220 memset(&sbands->ht_cap, 0, sizeof(struct ieee80211_sta_ht_cap));
221 sbands->ht_cap.ht_supported = true;
222 sbands->ht_cap.cap = (IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
223 IEEE80211_HT_CAP_SGI_20 |
224 IEEE80211_HT_CAP_SGI_40);
225 sbands->ht_cap.ampdu_factor = IEEE80211_HT_MAX_AMPDU_16K;
226 sbands->ht_cap.ampdu_density = IEEE80211_HT_MPDU_DENSITY_NONE;
227 sbands->ht_cap.mcs.rx_mask[0] = 0xff;
228 sbands->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
229 /* sbands->ht_cap.mcs.rx_highest = 0x82; */
230}
231
232/**
233 * rsi_mac80211_detach() - This function is used to de-initialize the
234 * Mac80211 stack.
235 * @adapter: Pointer to the adapter structure.
236 *
237 * Return: None.
238 */
239void rsi_mac80211_detach(struct rsi_hw *adapter)
240{
241 struct ieee80211_hw *hw = adapter->hw;
242 enum nl80211_band band;
243
244 if (hw) {
245 ieee80211_stop_queues(hw);
246 ieee80211_unregister_hw(hw);
247 ieee80211_free_hw(hw);
248 }
249
250 for (band = 0; band < NUM_NL80211_BANDS; band++) {
251 struct ieee80211_supported_band *sband =
252 &adapter->sbands[band];
253
254 kfree(sband->channels);
255 }
256
257#ifdef CONFIG_RSI_DEBUGFS
258 rsi_remove_dbgfs(adapter);
259 kfree(adapter->dfsentry);
260#endif
261}
262EXPORT_SYMBOL_GPL(rsi_mac80211_detach);
263
264/**
265 * rsi_indicate_tx_status() - This function indicates the transmit status.
266 * @adapter: Pointer to the adapter structure.
267 * @skb: Pointer to the socket buffer structure.
268 * @status: Status
269 *
270 * Return: None.
271 */
272void rsi_indicate_tx_status(struct rsi_hw *adapter,
273 struct sk_buff *skb,
274 int status)
275{
276 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
277 struct skb_info *tx_params;
278
279 if (!adapter->hw) {
280 rsi_dbg(ERR_ZONE, "##### No MAC #####\n");
281 return;
282 }
283
284 if (!status)
285 info->flags |= IEEE80211_TX_STAT_ACK;
286
287 tx_params = (struct skb_info *)info->driver_data;
288 skb_pull(skb, tx_params->internal_hdr_size);
289 memset(info->driver_data, 0, IEEE80211_TX_INFO_DRIVER_DATA_SIZE);
290
291 ieee80211_tx_status_irqsafe(adapter->hw, skb);
292}
293
294/**
295 * rsi_mac80211_tx() - This is the handler that 802.11 module calls for each
296 * transmitted frame.SKB contains the buffer starting
297 * from the IEEE 802.11 header.
298 * @hw: Pointer to the ieee80211_hw structure.
299 * @control: Pointer to the ieee80211_tx_control structure
300 * @skb: Pointer to the socket buffer structure.
301 *
302 * Return: None
303 */
304static void rsi_mac80211_tx(struct ieee80211_hw *hw,
305 struct ieee80211_tx_control *control,
306 struct sk_buff *skb)
307{
308 struct rsi_hw *adapter = hw->priv;
309 struct rsi_common *common = adapter->priv;
310
311 rsi_core_xmit(common, skb);
312}
313
314/**
315 * rsi_mac80211_start() - This is first handler that 802.11 module calls, since
316 * the driver init is complete by then, just
317 * returns success.
318 * @hw: Pointer to the ieee80211_hw structure.
319 *
320 * Return: 0 as success.
321 */
322static int rsi_mac80211_start(struct ieee80211_hw *hw)
323{
324 struct rsi_hw *adapter = hw->priv;
325 struct rsi_common *common = adapter->priv;
326
327 rsi_dbg(ERR_ZONE, "===> Interface UP <===\n");
328 mutex_lock(&common->mutex);
329 if (common->hibernate_resume) {
330 common->reinit_hw = true;
331 adapter->host_intf_ops->reinit_device(adapter);
332 wait_for_completion(&adapter->priv->wlan_init_completion);
333 }
334 common->iface_down = false;
335 wiphy_rfkill_start_polling(hw->wiphy);
336 rsi_send_rx_filter_frame(common, 0);
337 mutex_unlock(&common->mutex);
338
339 return 0;
340}
341
342/**
343 * rsi_mac80211_stop() - This is the last handler that 802.11 module calls.
344 * @hw: Pointer to the ieee80211_hw structure.
345 *
346 * Return: None.
347 */
348static void rsi_mac80211_stop(struct ieee80211_hw *hw)
349{
350 struct rsi_hw *adapter = hw->priv;
351 struct rsi_common *common = adapter->priv;
352
353 rsi_dbg(ERR_ZONE, "===> Interface DOWN <===\n");
354 mutex_lock(&common->mutex);
355 common->iface_down = true;
356 wiphy_rfkill_stop_polling(hw->wiphy);
357
358 /* Block all rx frames */
359 rsi_send_rx_filter_frame(common, 0xffff);
360
361 mutex_unlock(&common->mutex);
362}
363
364static int rsi_map_intf_mode(enum nl80211_iftype vif_type)
365{
366 switch (vif_type) {
367 case NL80211_IFTYPE_STATION:
368 return RSI_OPMODE_STA;
369 case NL80211_IFTYPE_AP:
370 return RSI_OPMODE_AP;
371 case NL80211_IFTYPE_P2P_DEVICE:
372 return RSI_OPMODE_P2P_CLIENT;
373 case NL80211_IFTYPE_P2P_CLIENT:
374 return RSI_OPMODE_P2P_CLIENT;
375 case NL80211_IFTYPE_P2P_GO:
376 return RSI_OPMODE_P2P_GO;
377 default:
378 return RSI_OPMODE_UNSUPPORTED;
379 }
380}
381
382/**
383 * rsi_mac80211_add_interface() - This function is called when a netdevice
384 * attached to the hardware is enabled.
385 * @hw: Pointer to the ieee80211_hw structure.
386 * @vif: Pointer to the ieee80211_vif structure.
387 *
388 * Return: ret: 0 on success, negative error code on failure.
389 */
390static int rsi_mac80211_add_interface(struct ieee80211_hw *hw,
391 struct ieee80211_vif *vif)
392{
393 struct rsi_hw *adapter = hw->priv;
394 struct rsi_common *common = adapter->priv;
395 struct vif_priv *vif_info = (struct vif_priv *)vif->drv_priv;
396 enum opmode intf_mode;
397 enum vap_status vap_status;
398 int vap_idx = -1, i;
399
400 vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD;
401 mutex_lock(&common->mutex);
402
403 intf_mode = rsi_map_intf_mode(vif->type);
404 if (intf_mode == RSI_OPMODE_UNSUPPORTED) {
405 rsi_dbg(ERR_ZONE,
406 "%s: Interface type %d not supported\n", __func__,
407 vif->type);
408 mutex_unlock(&common->mutex);
409 return -EOPNOTSUPP;
410 }
411 if ((vif->type == NL80211_IFTYPE_P2P_DEVICE) ||
412 (vif->type == NL80211_IFTYPE_P2P_CLIENT) ||
413 (vif->type == NL80211_IFTYPE_P2P_GO))
414 common->p2p_enabled = true;
415
416 /* Get free vap index */
417 for (i = 0; i < RSI_MAX_VIFS; i++) {
418 if (!adapter->vifs[i]) {
419 vap_idx = i;
420 break;
421 }
422 }
423 if (vap_idx < 0) {
424 rsi_dbg(ERR_ZONE, "Reject: Max VAPs reached\n");
425 mutex_unlock(&common->mutex);
426 return -EOPNOTSUPP;
427 }
428 vif_info->vap_id = vap_idx;
429 adapter->vifs[vap_idx] = vif;
430 adapter->sc_nvifs++;
431 vap_status = VAP_ADD;
432
433 if (rsi_set_vap_capabilities(common, intf_mode, vif->addr,
434 vif_info->vap_id, vap_status)) {
435 rsi_dbg(ERR_ZONE, "Failed to set VAP capabilities\n");
436 mutex_unlock(&common->mutex);
437 return -EINVAL;
438 }
439
440 if ((vif->type == NL80211_IFTYPE_AP) ||
441 (vif->type == NL80211_IFTYPE_P2P_GO)) {
442 rsi_send_rx_filter_frame(common, DISALLOW_BEACONS);
443 common->min_rate = RSI_RATE_AUTO;
444 for (i = 0; i < common->max_stations; i++)
445 common->stations[i].sta = NULL;
446 }
447
448 mutex_unlock(&common->mutex);
449
450 return 0;
451}
452
453/**
454 * rsi_mac80211_remove_interface() - This function notifies driver that an
455 * interface is going down.
456 * @hw: Pointer to the ieee80211_hw structure.
457 * @vif: Pointer to the ieee80211_vif structure.
458 *
459 * Return: None.
460 */
461static void rsi_mac80211_remove_interface(struct ieee80211_hw *hw,
462 struct ieee80211_vif *vif)
463{
464 struct rsi_hw *adapter = hw->priv;
465 struct rsi_common *common = adapter->priv;
466 enum opmode opmode;
467 int i;
468
469 rsi_dbg(INFO_ZONE, "Remove Interface Called\n");
470
471 mutex_lock(&common->mutex);
472
473 if (adapter->sc_nvifs <= 0) {
474 mutex_unlock(&common->mutex);
475 return;
476 }
477
478 opmode = rsi_map_intf_mode(vif->type);
479 if (opmode == RSI_OPMODE_UNSUPPORTED) {
480 rsi_dbg(ERR_ZONE, "Opmode error : %d\n", opmode);
481 mutex_unlock(&common->mutex);
482 return;
483 }
484 for (i = 0; i < RSI_MAX_VIFS; i++) {
485 if (!adapter->vifs[i])
486 continue;
487 if (vif == adapter->vifs[i]) {
488 rsi_set_vap_capabilities(common, opmode, vif->addr,
489 i, VAP_DELETE);
490 adapter->sc_nvifs--;
491 adapter->vifs[i] = NULL;
492 }
493 }
494 mutex_unlock(&common->mutex);
495}
496
497/**
498 * rsi_channel_change() - This function is a performs the checks
499 * required for changing a channel and sets
500 * the channel accordingly.
501 * @hw: Pointer to the ieee80211_hw structure.
502 *
503 * Return: 0 on success, negative error code on failure.
504 */
505static int rsi_channel_change(struct ieee80211_hw *hw)
506{
507 struct rsi_hw *adapter = hw->priv;
508 struct rsi_common *common = adapter->priv;
509 int status = -EOPNOTSUPP;
510 struct ieee80211_channel *curchan = hw->conf.chandef.chan;
511 u16 channel = curchan->hw_value;
512 struct ieee80211_vif *vif;
513 struct ieee80211_bss_conf *bss;
514 bool assoc = false;
515 int i;
516
517 rsi_dbg(INFO_ZONE,
518 "%s: Set channel: %d MHz type: %d channel_no %d\n",
519 __func__, curchan->center_freq,
520 curchan->flags, channel);
521
522 for (i = 0; i < RSI_MAX_VIFS; i++) {
523 vif = adapter->vifs[i];
524 if (!vif)
525 continue;
526 if (vif->type == NL80211_IFTYPE_STATION) {
527 bss = &vif->bss_conf;
528 if (bss->assoc) {
529 assoc = true;
530 break;
531 }
532 }
533 }
534 if (assoc) {
535 if (!common->hw_data_qs_blocked &&
536 (rsi_get_connected_channel(vif) != channel)) {
537 rsi_dbg(INFO_ZONE, "blk data q %d\n", channel);
538 if (!rsi_send_block_unblock_frame(common, true))
539 common->hw_data_qs_blocked = true;
540 }
541 }
542
543 status = rsi_band_check(common, curchan);
544 if (!status)
545 status = rsi_set_channel(adapter->priv, curchan);
546
547 if (assoc) {
548 if (common->hw_data_qs_blocked &&
549 (rsi_get_connected_channel(vif) == channel)) {
550 rsi_dbg(INFO_ZONE, "unblk data q %d\n", channel);
551 if (!rsi_send_block_unblock_frame(common, false))
552 common->hw_data_qs_blocked = false;
553 }
554 }
555
556 return status;
557}
558
559/**
560 * rsi_config_power() - This function configures tx power to device
561 * @hw: Pointer to the ieee80211_hw structure.
562 *
563 * Return: 0 on success, negative error code on failure.
564 */
565static int rsi_config_power(struct ieee80211_hw *hw)
566{
567 struct rsi_hw *adapter = hw->priv;
568 struct rsi_common *common = adapter->priv;
569 struct ieee80211_conf *conf = &hw->conf;
570
571 if (adapter->sc_nvifs <= 0) {
572 rsi_dbg(ERR_ZONE, "%s: No virtual interface found\n", __func__);
573 return -EINVAL;
574 }
575
576 rsi_dbg(INFO_ZONE,
577 "%s: Set tx power: %d dBM\n", __func__, conf->power_level);
578
579 if (conf->power_level == common->tx_power)
580 return 0;
581
582 common->tx_power = conf->power_level;
583
584 return rsi_send_radio_params_update(common);
585}
586
587/**
588 * rsi_mac80211_config() - This function is a handler for configuration
589 * requests. The stack calls this function to
590 * change hardware configuration, e.g., channel.
591 * @hw: Pointer to the ieee80211_hw structure.
592 * @changed: Changed flags set.
593 *
594 * Return: 0 on success, negative error code on failure.
595 */
596static int rsi_mac80211_config(struct ieee80211_hw *hw,
597 u32 changed)
598{
599 struct rsi_hw *adapter = hw->priv;
600 struct rsi_common *common = adapter->priv;
601 struct ieee80211_conf *conf = &hw->conf;
602 int status = -EOPNOTSUPP;
603
604 mutex_lock(&common->mutex);
605
606 if (changed & IEEE80211_CONF_CHANGE_CHANNEL)
607 status = rsi_channel_change(hw);
608
609 /* tx power */
610 if (changed & IEEE80211_CONF_CHANGE_POWER) {
611 rsi_dbg(INFO_ZONE, "%s: Configuring Power\n", __func__);
612 status = rsi_config_power(hw);
613 }
614
615 /* Power save parameters */
616 if (changed & IEEE80211_CONF_CHANGE_PS) {
617 struct ieee80211_vif *vif;
618 unsigned long flags;
619 int i, set_ps = 1;
620
621 for (i = 0; i < RSI_MAX_VIFS; i++) {
622 vif = adapter->vifs[i];
623 if (!vif)
624 continue;
625 /* Don't go to power save if AP vap exists */
626 if ((vif->type == NL80211_IFTYPE_AP) ||
627 (vif->type == NL80211_IFTYPE_P2P_GO)) {
628 set_ps = 0;
629 break;
630 }
631 }
632 if (set_ps) {
633 spin_lock_irqsave(&adapter->ps_lock, flags);
634 if (conf->flags & IEEE80211_CONF_PS)
635 rsi_enable_ps(adapter, vif);
636 else
637 rsi_disable_ps(adapter, vif);
638 spin_unlock_irqrestore(&adapter->ps_lock, flags);
639 }
640 }
641
642 /* RTS threshold */
643 if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
644 rsi_dbg(INFO_ZONE, "RTS threshold\n");
645 if ((common->rts_threshold) <= IEEE80211_MAX_RTS_THRESHOLD) {
646 rsi_dbg(INFO_ZONE,
647 "%s: Sending vap updates....\n", __func__);
648 status = rsi_send_vap_dynamic_update(common);
649 }
650 }
651 mutex_unlock(&common->mutex);
652
653 return status;
654}
655
656/**
657 * rsi_get_connected_channel() - This function is used to get the current
658 * connected channel number.
659 * @adapter: Pointer to the adapter structure.
660 *
661 * Return: Current connected AP's channel number is returned.
662 */
663u16 rsi_get_connected_channel(struct ieee80211_vif *vif)
664{
665 struct ieee80211_bss_conf *bss;
666 struct ieee80211_channel *channel;
667
668 if (!vif)
669 return 0;
670
671 bss = &vif->bss_conf;
672 channel = bss->chandef.chan;
673
674 if (!channel)
675 return 0;
676
677 return channel->hw_value;
678}
679
680static void rsi_switch_channel(struct rsi_hw *adapter,
681 struct ieee80211_vif *vif)
682{
683 struct rsi_common *common = adapter->priv;
684 struct ieee80211_channel *channel;
685
686 if (common->iface_down)
687 return;
688 if (!vif)
689 return;
690
691 channel = vif->bss_conf.chandef.chan;
692
693 if (!channel)
694 return;
695
696 rsi_band_check(common, channel);
697 rsi_set_channel(common, channel);
698 rsi_dbg(INFO_ZONE, "Switched to channel - %d\n", channel->hw_value);
699}
700
701/**
702 * rsi_mac80211_bss_info_changed() - This function is a handler for config
703 * requests related to BSS parameters that
704 * may vary during BSS's lifespan.
705 * @hw: Pointer to the ieee80211_hw structure.
706 * @vif: Pointer to the ieee80211_vif structure.
707 * @bss_conf: Pointer to the ieee80211_bss_conf structure.
708 * @changed: Changed flags set.
709 *
710 * Return: None.
711 */
712static void rsi_mac80211_bss_info_changed(struct ieee80211_hw *hw,
713 struct ieee80211_vif *vif,
714 struct ieee80211_bss_conf *bss_conf,
715 u32 changed)
716{
717 struct rsi_hw *adapter = hw->priv;
718 struct rsi_common *common = adapter->priv;
719 struct ieee80211_bss_conf *bss = &vif->bss_conf;
720 struct ieee80211_conf *conf = &hw->conf;
721 u16 rx_filter_word = 0;
722
723 mutex_lock(&common->mutex);
724 if (changed & BSS_CHANGED_ASSOC) {
725 rsi_dbg(INFO_ZONE, "%s: Changed Association status: %d\n",
726 __func__, bss_conf->assoc);
727 if (bss_conf->assoc) {
728 /* Send the RX filter frame */
729 rx_filter_word = (ALLOW_DATA_ASSOC_PEER |
730 ALLOW_CTRL_ASSOC_PEER |
731 ALLOW_MGMT_ASSOC_PEER);
732 rsi_send_rx_filter_frame(common, rx_filter_word);
733 }
734 rsi_inform_bss_status(common,
735 RSI_OPMODE_STA,
736 bss_conf->assoc,
737 bss_conf->bssid,
738 bss_conf->qos,
739 bss_conf->aid,
740 NULL, 0, vif);
741 adapter->ps_info.dtim_interval_duration = bss->dtim_period;
742 adapter->ps_info.listen_interval = conf->listen_interval;
743
744 /* If U-APSD is updated, send ps parameters to firmware */
745 if (bss->assoc) {
746 if (common->uapsd_bitmap) {
747 rsi_dbg(INFO_ZONE, "Configuring UAPSD\n");
748 rsi_conf_uapsd(adapter, vif);
749 }
750 } else {
751 common->uapsd_bitmap = 0;
752 }
753 }
754
755 if (changed & BSS_CHANGED_CQM) {
756 common->cqm_info.last_cqm_event_rssi = 0;
757 common->cqm_info.rssi_thold = bss_conf->cqm_rssi_thold;
758 common->cqm_info.rssi_hyst = bss_conf->cqm_rssi_hyst;
759 rsi_dbg(INFO_ZONE, "RSSI throld & hysteresis are: %d %d\n",
760 common->cqm_info.rssi_thold,
761 common->cqm_info.rssi_hyst);
762 }
763
764 if ((changed & BSS_CHANGED_BEACON_ENABLED) &&
765 ((vif->type == NL80211_IFTYPE_AP) ||
766 (vif->type == NL80211_IFTYPE_P2P_GO))) {
767 if (bss->enable_beacon) {
768 rsi_dbg(INFO_ZONE, "===> BEACON ENABLED <===\n");
769 common->beacon_enabled = 1;
770 } else {
771 rsi_dbg(INFO_ZONE, "===> BEACON DISABLED <===\n");
772 common->beacon_enabled = 0;
773 }
774 }
775
776 mutex_unlock(&common->mutex);
777}
778
779/**
780 * rsi_mac80211_conf_filter() - This function configure the device's RX filter.
781 * @hw: Pointer to the ieee80211_hw structure.
782 * @changed: Changed flags set.
783 * @total_flags: Total initial flags set.
784 * @multicast: Multicast.
785 *
786 * Return: None.
787 */
788static void rsi_mac80211_conf_filter(struct ieee80211_hw *hw,
789 u32 changed_flags,
790 u32 *total_flags,
791 u64 multicast)
792{
793 /* Not doing much here as of now */
794 *total_flags &= RSI_SUPP_FILTERS;
795}
796
797/**
798 * rsi_mac80211_conf_tx() - This function configures TX queue parameters
799 * (EDCF (aifs, cw_min, cw_max), bursting)
800 * for a hardware TX queue.
801 * @hw: Pointer to the ieee80211_hw structure
802 * @vif: Pointer to the ieee80211_vif structure.
803 * @queue: Queue number.
804 * @params: Pointer to ieee80211_tx_queue_params structure.
805 *
806 * Return: 0 on success, negative error code on failure.
807 */
808static int rsi_mac80211_conf_tx(struct ieee80211_hw *hw,
809 struct ieee80211_vif *vif, u16 queue,
810 const struct ieee80211_tx_queue_params *params)
811{
812 struct rsi_hw *adapter = hw->priv;
813 struct rsi_common *common = adapter->priv;
814 u8 idx = 0;
815
816 if (queue >= IEEE80211_NUM_ACS)
817 return 0;
818
819 rsi_dbg(INFO_ZONE,
820 "%s: Conf queue %d, aifs: %d, cwmin: %d cwmax: %d, txop: %d\n",
821 __func__, queue, params->aifs,
822 params->cw_min, params->cw_max, params->txop);
823
824 mutex_lock(&common->mutex);
825 /* Map into the way the f/w expects */
826 switch (queue) {
827 case IEEE80211_AC_VO:
828 idx = VO_Q;
829 break;
830 case IEEE80211_AC_VI:
831 idx = VI_Q;
832 break;
833 case IEEE80211_AC_BE:
834 idx = BE_Q;
835 break;
836 case IEEE80211_AC_BK:
837 idx = BK_Q;
838 break;
839 default:
840 idx = BE_Q;
841 break;
842 }
843
844 memcpy(&common->edca_params[idx],
845 params,
846 sizeof(struct ieee80211_tx_queue_params));
847
848 if (params->uapsd)
849 common->uapsd_bitmap |= idx;
850 else
851 common->uapsd_bitmap &= (~idx);
852
853 mutex_unlock(&common->mutex);
854
855 return 0;
856}
857
858/**
859 * rsi_hal_key_config() - This function loads the keys into the firmware.
860 * @hw: Pointer to the ieee80211_hw structure.
861 * @vif: Pointer to the ieee80211_vif structure.
862 * @key: Pointer to the ieee80211_key_conf structure.
863 *
864 * Return: status: 0 on success, negative error codes on failure.
865 */
866static int rsi_hal_key_config(struct ieee80211_hw *hw,
867 struct ieee80211_vif *vif,
868 struct ieee80211_key_conf *key,
869 struct ieee80211_sta *sta)
870{
871 struct rsi_hw *adapter = hw->priv;
872 struct rsi_sta *rsta = NULL;
873 int status;
874 u8 key_type;
875 s16 sta_id = 0;
876
877 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
878 key_type = RSI_PAIRWISE_KEY;
879 else
880 key_type = RSI_GROUP_KEY;
881
882 rsi_dbg(ERR_ZONE, "%s: Cipher 0x%x key_type: %d key_len: %d\n",
883 __func__, key->cipher, key_type, key->keylen);
884
885 if ((vif->type == NL80211_IFTYPE_AP) ||
886 (vif->type == NL80211_IFTYPE_P2P_GO)) {
887 if (sta) {
888 rsta = rsi_find_sta(adapter->priv, sta->addr);
889 if (rsta)
890 sta_id = rsta->sta_id;
891 }
892 adapter->priv->key = key;
893 } else {
894 if ((key->cipher == WLAN_CIPHER_SUITE_WEP104) ||
895 (key->cipher == WLAN_CIPHER_SUITE_WEP40)) {
896 status = rsi_hal_load_key(adapter->priv,
897 key->key,
898 key->keylen,
899 RSI_PAIRWISE_KEY,
900 key->keyidx,
901 key->cipher,
902 sta_id,
903 vif);
904 if (status)
905 return status;
906 }
907 }
908
909 return rsi_hal_load_key(adapter->priv,
910 key->key,
911 key->keylen,
912 key_type,
913 key->keyidx,
914 key->cipher,
915 sta_id,
916 vif);
917}
918
919/**
920 * rsi_mac80211_set_key() - This function sets type of key to be loaded.
921 * @hw: Pointer to the ieee80211_hw structure.
922 * @cmd: enum set_key_cmd.
923 * @vif: Pointer to the ieee80211_vif structure.
924 * @sta: Pointer to the ieee80211_sta structure.
925 * @key: Pointer to the ieee80211_key_conf structure.
926 *
927 * Return: status: 0 on success, negative error code on failure.
928 */
929static int rsi_mac80211_set_key(struct ieee80211_hw *hw,
930 enum set_key_cmd cmd,
931 struct ieee80211_vif *vif,
932 struct ieee80211_sta *sta,
933 struct ieee80211_key_conf *key)
934{
935 struct rsi_hw *adapter = hw->priv;
936 struct rsi_common *common = adapter->priv;
937 struct security_info *secinfo = &common->secinfo;
938 int status;
939
940 mutex_lock(&common->mutex);
941 switch (cmd) {
942 case SET_KEY:
943 secinfo->security_enable = true;
944 status = rsi_hal_key_config(hw, vif, key, sta);
945 if (status) {
946 mutex_unlock(&common->mutex);
947 return status;
948 }
949
950 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
951 secinfo->ptk_cipher = key->cipher;
952 else
953 secinfo->gtk_cipher = key->cipher;
954
955 key->hw_key_idx = key->keyidx;
956 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
957
958 rsi_dbg(ERR_ZONE, "%s: RSI set_key\n", __func__);
959 break;
960
961 case DISABLE_KEY:
962 if (vif->type == NL80211_IFTYPE_STATION)
963 secinfo->security_enable = false;
964 rsi_dbg(ERR_ZONE, "%s: RSI del key\n", __func__);
965 memset(key, 0, sizeof(struct ieee80211_key_conf));
966 status = rsi_hal_key_config(hw, vif, key, sta);
967 break;
968
969 default:
970 status = -EOPNOTSUPP;
971 break;
972 }
973
974 mutex_unlock(&common->mutex);
975 return status;
976}
977
978/**
979 * rsi_mac80211_ampdu_action() - This function selects the AMPDU action for
980 * the corresponding mlme_action flag and
981 * informs the f/w regarding this.
982 * @hw: Pointer to the ieee80211_hw structure.
983 * @vif: Pointer to the ieee80211_vif structure.
984 * @params: Pointer to A-MPDU action parameters
985 *
986 * Return: status: 0 on success, negative error code on failure.
987 */
988static int rsi_mac80211_ampdu_action(struct ieee80211_hw *hw,
989 struct ieee80211_vif *vif,
990 struct ieee80211_ampdu_params *params)
991{
992 int status = -EOPNOTSUPP;
993 struct rsi_hw *adapter = hw->priv;
994 struct rsi_common *common = adapter->priv;
995 struct rsi_sta *rsta = NULL;
996 u16 seq_no = 0, seq_start = 0;
997 u8 ii = 0;
998 struct ieee80211_sta *sta = params->sta;
999 u8 sta_id = 0;
1000 enum ieee80211_ampdu_mlme_action action = params->action;
1001 u16 tid = params->tid;
1002 u16 *ssn = ¶ms->ssn;
1003 u8 buf_size = params->buf_size;
1004
1005 for (ii = 0; ii < RSI_MAX_VIFS; ii++) {
1006 if (vif == adapter->vifs[ii])
1007 break;
1008 }
1009
1010 mutex_lock(&common->mutex);
1011
1012 if (ssn != NULL)
1013 seq_no = *ssn;
1014
1015 if ((vif->type == NL80211_IFTYPE_AP) ||
1016 (vif->type == NL80211_IFTYPE_P2P_GO)) {
1017 rsta = rsi_find_sta(common, sta->addr);
1018 if (!rsta) {
1019 rsi_dbg(ERR_ZONE, "No station mapped\n");
1020 status = 0;
1021 goto unlock;
1022 }
1023 sta_id = rsta->sta_id;
1024 }
1025
1026 rsi_dbg(INFO_ZONE,
1027 "%s: AMPDU action tid=%d ssn=0x%x, buf_size=%d sta_id=%d\n",
1028 __func__, tid, seq_no, buf_size, sta_id);
1029
1030 switch (action) {
1031 case IEEE80211_AMPDU_RX_START:
1032 status = rsi_send_aggregation_params_frame(common,
1033 tid,
1034 seq_no,
1035 buf_size,
1036 STA_RX_ADDBA_DONE,
1037 sta_id);
1038 break;
1039
1040 case IEEE80211_AMPDU_RX_STOP:
1041 status = rsi_send_aggregation_params_frame(common,
1042 tid,
1043 0,
1044 buf_size,
1045 STA_RX_DELBA,
1046 sta_id);
1047 break;
1048
1049 case IEEE80211_AMPDU_TX_START:
1050 if ((vif->type == NL80211_IFTYPE_STATION) ||
1051 (vif->type == NL80211_IFTYPE_P2P_CLIENT))
1052 common->vif_info[ii].seq_start = seq_no;
1053 else if ((vif->type == NL80211_IFTYPE_AP) ||
1054 (vif->type == NL80211_IFTYPE_P2P_GO))
1055 rsta->seq_start[tid] = seq_no;
1056 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1057 status = 0;
1058 break;
1059
1060 case IEEE80211_AMPDU_TX_STOP_CONT:
1061 case IEEE80211_AMPDU_TX_STOP_FLUSH:
1062 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
1063 status = rsi_send_aggregation_params_frame(common,
1064 tid,
1065 seq_no,
1066 buf_size,
1067 STA_TX_DELBA,
1068 sta_id);
1069 if (!status)
1070 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1071 break;
1072
1073 case IEEE80211_AMPDU_TX_OPERATIONAL:
1074 if ((vif->type == NL80211_IFTYPE_STATION) ||
1075 (vif->type == NL80211_IFTYPE_P2P_CLIENT))
1076 seq_start = common->vif_info[ii].seq_start;
1077 else if ((vif->type == NL80211_IFTYPE_AP) ||
1078 (vif->type == NL80211_IFTYPE_P2P_GO))
1079 seq_start = rsta->seq_start[tid];
1080 status = rsi_send_aggregation_params_frame(common,
1081 tid,
1082 seq_start,
1083 buf_size,
1084 STA_TX_ADDBA_DONE,
1085 sta_id);
1086 break;
1087
1088 default:
1089 rsi_dbg(ERR_ZONE, "%s: Uknown AMPDU action\n", __func__);
1090 break;
1091 }
1092
1093unlock:
1094 mutex_unlock(&common->mutex);
1095 return status;
1096}
1097
1098/**
1099 * rsi_mac80211_set_rts_threshold() - This function sets rts threshold value.
1100 * @hw: Pointer to the ieee80211_hw structure.
1101 * @value: Rts threshold value.
1102 *
1103 * Return: 0 on success.
1104 */
1105static int rsi_mac80211_set_rts_threshold(struct ieee80211_hw *hw,
1106 u32 value)
1107{
1108 struct rsi_hw *adapter = hw->priv;
1109 struct rsi_common *common = adapter->priv;
1110
1111 mutex_lock(&common->mutex);
1112 common->rts_threshold = value;
1113 mutex_unlock(&common->mutex);
1114
1115 return 0;
1116}
1117
1118/**
1119 * rsi_mac80211_set_rate_mask() - This function sets bitrate_mask to be used.
1120 * @hw: Pointer to the ieee80211_hw structure
1121 * @vif: Pointer to the ieee80211_vif structure.
1122 * @mask: Pointer to the cfg80211_bitrate_mask structure.
1123 *
1124 * Return: 0 on success.
1125 */
1126static int rsi_mac80211_set_rate_mask(struct ieee80211_hw *hw,
1127 struct ieee80211_vif *vif,
1128 const struct cfg80211_bitrate_mask *mask)
1129{
1130 struct rsi_hw *adapter = hw->priv;
1131 struct rsi_common *common = adapter->priv;
1132 enum nl80211_band band = hw->conf.chandef.chan->band;
1133
1134 mutex_lock(&common->mutex);
1135 common->fixedrate_mask[band] = 0;
1136
1137 if (mask->control[band].legacy == 0xfff) {
1138 common->fixedrate_mask[band] =
1139 (mask->control[band].ht_mcs[0] << 12);
1140 } else {
1141 common->fixedrate_mask[band] =
1142 mask->control[band].legacy;
1143 }
1144 mutex_unlock(&common->mutex);
1145
1146 return 0;
1147}
1148
1149/**
1150 * rsi_perform_cqm() - This function performs cqm.
1151 * @common: Pointer to the driver private structure.
1152 * @bssid: pointer to the bssid.
1153 * @rssi: RSSI value.
1154 */
1155static void rsi_perform_cqm(struct rsi_common *common,
1156 u8 *bssid,
1157 s8 rssi,
1158 struct ieee80211_vif *vif)
1159{
1160 s8 last_event = common->cqm_info.last_cqm_event_rssi;
1161 int thold = common->cqm_info.rssi_thold;
1162 u32 hyst = common->cqm_info.rssi_hyst;
1163 enum nl80211_cqm_rssi_threshold_event event;
1164
1165 if (rssi < thold && (last_event == 0 || rssi < (last_event - hyst)))
1166 event = NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW;
1167 else if (rssi > thold &&
1168 (last_event == 0 || rssi > (last_event + hyst)))
1169 event = NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH;
1170 else
1171 return;
1172
1173 common->cqm_info.last_cqm_event_rssi = rssi;
1174 rsi_dbg(INFO_ZONE, "CQM: Notifying event: %d\n", event);
1175 ieee80211_cqm_rssi_notify(vif, event, rssi, GFP_KERNEL);
1176
1177 return;
1178}
1179
1180/**
1181 * rsi_fill_rx_status() - This function fills rx status in
1182 * ieee80211_rx_status structure.
1183 * @hw: Pointer to the ieee80211_hw structure.
1184 * @skb: Pointer to the socket buffer structure.
1185 * @common: Pointer to the driver private structure.
1186 * @rxs: Pointer to the ieee80211_rx_status structure.
1187 *
1188 * Return: None.
1189 */
1190static void rsi_fill_rx_status(struct ieee80211_hw *hw,
1191 struct sk_buff *skb,
1192 struct rsi_common *common,
1193 struct ieee80211_rx_status *rxs)
1194{
1195 struct rsi_hw *adapter = common->priv;
1196 struct ieee80211_vif *vif;
1197 struct ieee80211_bss_conf *bss = NULL;
1198 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1199 struct skb_info *rx_params = (struct skb_info *)info->driver_data;
1200 struct ieee80211_hdr *hdr;
1201 char rssi = rx_params->rssi;
1202 u8 hdrlen = 0;
1203 u8 channel = rx_params->channel;
1204 s32 freq;
1205 int i;
1206
1207 hdr = ((struct ieee80211_hdr *)(skb->data));
1208 hdrlen = ieee80211_hdrlen(hdr->frame_control);
1209
1210 memset(info, 0, sizeof(struct ieee80211_tx_info));
1211
1212 rxs->signal = -(rssi);
1213
1214 rxs->band = common->band;
1215
1216 freq = ieee80211_channel_to_frequency(channel, rxs->band);
1217
1218 if (freq)
1219 rxs->freq = freq;
1220
1221 if (ieee80211_has_protected(hdr->frame_control)) {
1222 if (rsi_is_cipher_wep(common)) {
1223 memmove(skb->data + 4, skb->data, hdrlen);
1224 skb_pull(skb, 4);
1225 } else {
1226 memmove(skb->data + 8, skb->data, hdrlen);
1227 skb_pull(skb, 8);
1228 rxs->flag |= RX_FLAG_MMIC_STRIPPED;
1229 }
1230 rxs->flag |= RX_FLAG_DECRYPTED;
1231 rxs->flag |= RX_FLAG_IV_STRIPPED;
1232 }
1233
1234 for (i = 0; i < RSI_MAX_VIFS; i++) {
1235 vif = adapter->vifs[i];
1236 if (!vif)
1237 continue;
1238 if (vif->type == NL80211_IFTYPE_STATION) {
1239 bss = &vif->bss_conf;
1240 break;
1241 }
1242 }
1243 if (!bss)
1244 return;
1245 /* CQM only for connected AP beacons, the RSSI is a weighted avg */
1246 if (bss->assoc && !(memcmp(bss->bssid, hdr->addr2, ETH_ALEN))) {
1247 if (ieee80211_is_beacon(hdr->frame_control))
1248 rsi_perform_cqm(common, hdr->addr2, rxs->signal, vif);
1249 }
1250
1251 return;
1252}
1253
1254/**
1255 * rsi_indicate_pkt_to_os() - This function sends recieved packet to mac80211.
1256 * @common: Pointer to the driver private structure.
1257 * @skb: Pointer to the socket buffer structure.
1258 *
1259 * Return: None.
1260 */
1261void rsi_indicate_pkt_to_os(struct rsi_common *common,
1262 struct sk_buff *skb)
1263{
1264 struct rsi_hw *adapter = common->priv;
1265 struct ieee80211_hw *hw = adapter->hw;
1266 struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb);
1267
1268 if ((common->iface_down) || (!adapter->sc_nvifs)) {
1269 dev_kfree_skb(skb);
1270 return;
1271 }
1272
1273 /* filling in the ieee80211_rx_status flags */
1274 rsi_fill_rx_status(hw, skb, common, rx_status);
1275
1276 ieee80211_rx_irqsafe(hw, skb);
1277}
1278
1279static void rsi_set_min_rate(struct ieee80211_hw *hw,
1280 struct ieee80211_sta *sta,
1281 struct rsi_common *common)
1282{
1283 u8 band = hw->conf.chandef.chan->band;
1284 u8 ii;
1285 u32 rate_bitmap;
1286 bool matched = false;
1287
1288 common->bitrate_mask[band] = sta->supp_rates[band];
1289
1290 rate_bitmap = (common->fixedrate_mask[band] & sta->supp_rates[band]);
1291
1292 if (rate_bitmap & 0xfff) {
1293 /* Find out the min rate */
1294 for (ii = 0; ii < ARRAY_SIZE(rsi_rates); ii++) {
1295 if (rate_bitmap & BIT(ii)) {
1296 common->min_rate = rsi_rates[ii].hw_value;
1297 matched = true;
1298 break;
1299 }
1300 }
1301 }
1302
1303 common->vif_info[0].is_ht = sta->ht_cap.ht_supported;
1304
1305 if ((common->vif_info[0].is_ht) && (rate_bitmap >> 12)) {
1306 for (ii = 0; ii < ARRAY_SIZE(rsi_mcsrates); ii++) {
1307 if ((rate_bitmap >> 12) & BIT(ii)) {
1308 common->min_rate = rsi_mcsrates[ii];
1309 matched = true;
1310 break;
1311 }
1312 }
1313 }
1314
1315 if (!matched)
1316 common->min_rate = 0xffff;
1317}
1318
1319/**
1320 * rsi_mac80211_sta_add() - This function notifies driver about a peer getting
1321 * connected.
1322 * @hw: pointer to the ieee80211_hw structure.
1323 * @vif: Pointer to the ieee80211_vif structure.
1324 * @sta: Pointer to the ieee80211_sta structure.
1325 *
1326 * Return: 0 on success, negative error codes on failure.
1327 */
1328static int rsi_mac80211_sta_add(struct ieee80211_hw *hw,
1329 struct ieee80211_vif *vif,
1330 struct ieee80211_sta *sta)
1331{
1332 struct rsi_hw *adapter = hw->priv;
1333 struct rsi_common *common = adapter->priv;
1334 bool sta_exist = false;
1335 struct rsi_sta *rsta;
1336 int status = 0;
1337
1338 rsi_dbg(INFO_ZONE, "Station Add: %pM\n", sta->addr);
1339
1340 mutex_lock(&common->mutex);
1341
1342 if ((vif->type == NL80211_IFTYPE_AP) ||
1343 (vif->type == NL80211_IFTYPE_P2P_GO)) {
1344 u8 cnt;
1345 int sta_idx = -1;
1346 int free_index = -1;
1347
1348 /* Check if max stations reached */
1349 if (common->num_stations >= common->max_stations) {
1350 rsi_dbg(ERR_ZONE, "Reject: Max Stations exists\n");
1351 status = -EOPNOTSUPP;
1352 goto unlock;
1353 }
1354 for (cnt = 0; cnt < common->max_stations; cnt++) {
1355 rsta = &common->stations[cnt];
1356
1357 if (!rsta->sta) {
1358 if (free_index < 0)
1359 free_index = cnt;
1360 continue;
1361 }
1362 if (!memcmp(rsta->sta->addr, sta->addr, ETH_ALEN)) {
1363 rsi_dbg(INFO_ZONE, "Station exists\n");
1364 sta_idx = cnt;
1365 sta_exist = true;
1366 break;
1367 }
1368 }
1369 if (!sta_exist) {
1370 if (free_index >= 0)
1371 sta_idx = free_index;
1372 }
1373 if (sta_idx < 0) {
1374 rsi_dbg(ERR_ZONE,
1375 "%s: Some problem reaching here...\n",
1376 __func__);
1377 status = -EINVAL;
1378 goto unlock;
1379 }
1380 rsta = &common->stations[sta_idx];
1381 rsta->sta = sta;
1382 rsta->sta_id = sta_idx;
1383 for (cnt = 0; cnt < IEEE80211_NUM_TIDS; cnt++)
1384 rsta->start_tx_aggr[cnt] = false;
1385 for (cnt = 0; cnt < IEEE80211_NUM_TIDS; cnt++)
1386 rsta->seq_start[cnt] = 0;
1387 if (!sta_exist) {
1388 rsi_dbg(INFO_ZONE, "New Station\n");
1389
1390 /* Send peer notify to device */
1391 rsi_dbg(INFO_ZONE, "Indicate bss status to device\n");
1392 rsi_inform_bss_status(common, RSI_OPMODE_AP, 1,
1393 sta->addr, sta->wme, sta->aid,
1394 sta, sta_idx, vif);
1395
1396 if (common->key) {
1397 struct ieee80211_key_conf *key = common->key;
1398
1399 if ((key->cipher == WLAN_CIPHER_SUITE_WEP104) ||
1400 (key->cipher == WLAN_CIPHER_SUITE_WEP40))
1401 rsi_hal_load_key(adapter->priv,
1402 key->key,
1403 key->keylen,
1404 RSI_PAIRWISE_KEY,
1405 key->keyidx,
1406 key->cipher,
1407 sta_idx,
1408 vif);
1409 }
1410
1411 common->num_stations++;
1412 }
1413 }
1414
1415 if ((vif->type == NL80211_IFTYPE_STATION) ||
1416 (vif->type == NL80211_IFTYPE_P2P_CLIENT)) {
1417 rsi_set_min_rate(hw, sta, common);
1418 if (sta->ht_cap.ht_supported) {
1419 common->vif_info[0].is_ht = true;
1420 common->bitrate_mask[NL80211_BAND_2GHZ] =
1421 sta->supp_rates[NL80211_BAND_2GHZ];
1422 if ((sta->ht_cap.cap & IEEE80211_HT_CAP_SGI_20) ||
1423 (sta->ht_cap.cap & IEEE80211_HT_CAP_SGI_40))
1424 common->vif_info[0].sgi = true;
1425 ieee80211_start_tx_ba_session(sta, 0, 0);
1426 }
1427 }
1428
1429unlock:
1430 mutex_unlock(&common->mutex);
1431
1432 return status;
1433}
1434
1435/**
1436 * rsi_mac80211_sta_remove() - This function notifies driver about a peer
1437 * getting disconnected.
1438 * @hw: Pointer to the ieee80211_hw structure.
1439 * @vif: Pointer to the ieee80211_vif structure.
1440 * @sta: Pointer to the ieee80211_sta structure.
1441 *
1442 * Return: 0 on success, negative error codes on failure.
1443 */
1444static int rsi_mac80211_sta_remove(struct ieee80211_hw *hw,
1445 struct ieee80211_vif *vif,
1446 struct ieee80211_sta *sta)
1447{
1448 struct rsi_hw *adapter = hw->priv;
1449 struct rsi_common *common = adapter->priv;
1450 struct ieee80211_bss_conf *bss = &vif->bss_conf;
1451 struct rsi_sta *rsta;
1452
1453 rsi_dbg(INFO_ZONE, "Station Remove: %pM\n", sta->addr);
1454
1455 mutex_lock(&common->mutex);
1456
1457 if ((vif->type == NL80211_IFTYPE_AP) ||
1458 (vif->type == NL80211_IFTYPE_P2P_GO)) {
1459 u8 sta_idx, cnt;
1460
1461 /* Send peer notify to device */
1462 rsi_dbg(INFO_ZONE, "Indicate bss status to device\n");
1463 for (sta_idx = 0; sta_idx < common->max_stations; sta_idx++) {
1464 rsta = &common->stations[sta_idx];
1465
1466 if (!rsta->sta)
1467 continue;
1468 if (!memcmp(rsta->sta->addr, sta->addr, ETH_ALEN)) {
1469 rsi_inform_bss_status(common, RSI_OPMODE_AP, 0,
1470 sta->addr, sta->wme,
1471 sta->aid, sta, sta_idx,
1472 vif);
1473 rsta->sta = NULL;
1474 rsta->sta_id = -1;
1475 for (cnt = 0; cnt < IEEE80211_NUM_TIDS; cnt++)
1476 rsta->start_tx_aggr[cnt] = false;
1477 if (common->num_stations > 0)
1478 common->num_stations--;
1479 break;
1480 }
1481 }
1482 if (sta_idx >= common->max_stations)
1483 rsi_dbg(ERR_ZONE, "%s: No station found\n", __func__);
1484 }
1485
1486 if ((vif->type == NL80211_IFTYPE_STATION) ||
1487 (vif->type == NL80211_IFTYPE_P2P_CLIENT)) {
1488 /* Resetting all the fields to default values */
1489 memcpy((u8 *)bss->bssid, (u8 *)sta->addr, ETH_ALEN);
1490 bss->qos = sta->wme;
1491 common->bitrate_mask[NL80211_BAND_2GHZ] = 0;
1492 common->bitrate_mask[NL80211_BAND_5GHZ] = 0;
1493 common->min_rate = 0xffff;
1494 common->vif_info[0].is_ht = false;
1495 common->vif_info[0].sgi = false;
1496 common->vif_info[0].seq_start = 0;
1497 common->secinfo.ptk_cipher = 0;
1498 common->secinfo.gtk_cipher = 0;
1499 if (!common->iface_down)
1500 rsi_send_rx_filter_frame(common, 0);
1501 }
1502 mutex_unlock(&common->mutex);
1503
1504 return 0;
1505}
1506
1507/**
1508 * rsi_mac80211_set_antenna() - This function is used to configure
1509 * tx and rx antennas.
1510 * @hw: Pointer to the ieee80211_hw structure.
1511 * @tx_ant: Bitmap for tx antenna
1512 * @rx_ant: Bitmap for rx antenna
1513 *
1514 * Return: 0 on success, Negative error code on failure.
1515 */
1516static int rsi_mac80211_set_antenna(struct ieee80211_hw *hw,
1517 u32 tx_ant, u32 rx_ant)
1518{
1519 struct rsi_hw *adapter = hw->priv;
1520 struct rsi_common *common = adapter->priv;
1521 u8 antenna = 0;
1522
1523 if (tx_ant > 1 || rx_ant > 1) {
1524 rsi_dbg(ERR_ZONE,
1525 "Invalid antenna selection (tx: %d, rx:%d)\n",
1526 tx_ant, rx_ant);
1527 rsi_dbg(ERR_ZONE,
1528 "Use 0 for int_ant, 1 for ext_ant\n");
1529 return -EINVAL;
1530 }
1531
1532 rsi_dbg(INFO_ZONE, "%s: Antenna map Tx %x Rx %d\n",
1533 __func__, tx_ant, rx_ant);
1534
1535 mutex_lock(&common->mutex);
1536
1537 antenna = tx_ant ? ANTENNA_SEL_UFL : ANTENNA_SEL_INT;
1538 if (common->ant_in_use != antenna)
1539 if (rsi_set_antenna(common, antenna))
1540 goto fail_set_antenna;
1541
1542 rsi_dbg(INFO_ZONE, "(%s) Antenna path configured successfully\n",
1543 tx_ant ? "UFL" : "INT");
1544
1545 common->ant_in_use = antenna;
1546
1547 mutex_unlock(&common->mutex);
1548
1549 return 0;
1550
1551fail_set_antenna:
1552 rsi_dbg(ERR_ZONE, "%s: Failed.\n", __func__);
1553 mutex_unlock(&common->mutex);
1554 return -EINVAL;
1555}
1556
1557/**
1558 * rsi_mac80211_get_antenna() - This function is used to configure
1559 * tx and rx antennas.
1560 *
1561 * @hw: Pointer to the ieee80211_hw structure.
1562 * @tx_ant: Bitmap for tx antenna
1563 * @rx_ant: Bitmap for rx antenna
1564 *
1565 * Return: 0 on success, negative error codes on failure.
1566 */
1567static int rsi_mac80211_get_antenna(struct ieee80211_hw *hw,
1568 u32 *tx_ant, u32 *rx_ant)
1569{
1570 struct rsi_hw *adapter = hw->priv;
1571 struct rsi_common *common = adapter->priv;
1572
1573 mutex_lock(&common->mutex);
1574
1575 *tx_ant = (common->ant_in_use == ANTENNA_SEL_UFL) ? 1 : 0;
1576 *rx_ant = 0;
1577
1578 mutex_unlock(&common->mutex);
1579
1580 return 0;
1581}
1582
1583static int rsi_map_region_code(enum nl80211_dfs_regions region_code)
1584{
1585 switch (region_code) {
1586 case NL80211_DFS_FCC:
1587 return RSI_REGION_FCC;
1588 case NL80211_DFS_ETSI:
1589 return RSI_REGION_ETSI;
1590 case NL80211_DFS_JP:
1591 return RSI_REGION_TELEC;
1592 case NL80211_DFS_UNSET:
1593 return RSI_REGION_WORLD;
1594 }
1595 return RSI_REGION_WORLD;
1596}
1597
1598static void rsi_reg_notify(struct wiphy *wiphy,
1599 struct regulatory_request *request)
1600{
1601 struct ieee80211_supported_band *sband;
1602 struct ieee80211_channel *ch;
1603 struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy);
1604 struct rsi_hw * adapter = hw->priv;
1605 struct rsi_common *common = adapter->priv;
1606 int i;
1607
1608 mutex_lock(&common->mutex);
1609
1610 rsi_dbg(INFO_ZONE, "country = %s dfs_region = %d\n",
1611 request->alpha2, request->dfs_region);
1612
1613 if (common->num_supp_bands > 1) {
1614 sband = wiphy->bands[NL80211_BAND_5GHZ];
1615
1616 for (i = 0; i < sband->n_channels; i++) {
1617 ch = &sband->channels[i];
1618 if (ch->flags & IEEE80211_CHAN_DISABLED)
1619 continue;
1620
1621 if (ch->flags & IEEE80211_CHAN_RADAR)
1622 ch->flags |= IEEE80211_CHAN_NO_IR;
1623 }
1624 }
1625 adapter->dfs_region = rsi_map_region_code(request->dfs_region);
1626 rsi_dbg(INFO_ZONE, "RSI region code = %d\n", adapter->dfs_region);
1627
1628 adapter->country[0] = request->alpha2[0];
1629 adapter->country[1] = request->alpha2[1];
1630
1631 mutex_unlock(&common->mutex);
1632}
1633
1634static void rsi_mac80211_rfkill_poll(struct ieee80211_hw *hw)
1635{
1636 struct rsi_hw *adapter = hw->priv;
1637 struct rsi_common *common = adapter->priv;
1638
1639 mutex_lock(&common->mutex);
1640 if (common->fsm_state != FSM_MAC_INIT_DONE)
1641 wiphy_rfkill_set_hw_state(hw->wiphy, true);
1642 else
1643 wiphy_rfkill_set_hw_state(hw->wiphy, false);
1644 mutex_unlock(&common->mutex);
1645}
1646
1647static void rsi_resume_conn_channel(struct rsi_common *common)
1648{
1649 struct rsi_hw *adapter = common->priv;
1650 struct ieee80211_vif *vif;
1651 int cnt;
1652
1653 for (cnt = 0; cnt < RSI_MAX_VIFS; cnt++) {
1654 vif = adapter->vifs[cnt];
1655 if (!vif)
1656 continue;
1657
1658 if ((vif->type == NL80211_IFTYPE_AP) ||
1659 (vif->type == NL80211_IFTYPE_P2P_GO)) {
1660 rsi_switch_channel(adapter, vif);
1661 break;
1662 }
1663 if (((vif->type == NL80211_IFTYPE_STATION) ||
1664 (vif->type == NL80211_IFTYPE_P2P_CLIENT)) &&
1665 vif->bss_conf.assoc) {
1666 rsi_switch_channel(adapter, vif);
1667 break;
1668 }
1669 }
1670}
1671
1672void rsi_roc_timeout(struct timer_list *t)
1673{
1674 struct rsi_common *common = from_timer(common, t, roc_timer);
1675
1676 rsi_dbg(INFO_ZONE, "Remain on channel expired\n");
1677
1678 mutex_lock(&common->mutex);
1679 ieee80211_remain_on_channel_expired(common->priv->hw);
1680
1681 if (timer_pending(&common->roc_timer))
1682 del_timer(&common->roc_timer);
1683
1684 rsi_resume_conn_channel(common);
1685 mutex_unlock(&common->mutex);
1686}
1687
1688static int rsi_mac80211_roc(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
1689 struct ieee80211_channel *chan, int duration,
1690 enum ieee80211_roc_type type)
1691{
1692 struct rsi_hw *adapter = (struct rsi_hw *)hw->priv;
1693 struct rsi_common *common = (struct rsi_common *)adapter->priv;
1694 int status = 0;
1695
1696 rsi_dbg(INFO_ZONE, "***** Remain on channel *****\n");
1697
1698 mutex_lock(&common->mutex);
1699 rsi_dbg(INFO_ZONE, "%s: channel: %d duration: %dms\n",
1700 __func__, chan->hw_value, duration);
1701
1702 if (timer_pending(&common->roc_timer)) {
1703 rsi_dbg(INFO_ZONE, "Stop on-going ROC\n");
1704 del_timer(&common->roc_timer);
1705 }
1706 common->roc_timer.expires = msecs_to_jiffies(duration) + jiffies;
1707 add_timer(&common->roc_timer);
1708
1709 /* Configure band */
1710 if (rsi_band_check(common, chan)) {
1711 rsi_dbg(ERR_ZONE, "Failed to set band\n");
1712 status = -EINVAL;
1713 goto out;
1714 }
1715
1716 /* Configure channel */
1717 if (rsi_set_channel(common, chan)) {
1718 rsi_dbg(ERR_ZONE, "Failed to set the channel\n");
1719 status = -EINVAL;
1720 goto out;
1721 }
1722
1723 common->roc_vif = vif;
1724 ieee80211_ready_on_channel(hw);
1725 rsi_dbg(INFO_ZONE, "%s: Ready on channel :%d\n",
1726 __func__, chan->hw_value);
1727
1728out:
1729 mutex_unlock(&common->mutex);
1730
1731 return status;
1732}
1733
1734static int rsi_mac80211_cancel_roc(struct ieee80211_hw *hw)
1735{
1736 struct rsi_hw *adapter = hw->priv;
1737 struct rsi_common *common = adapter->priv;
1738
1739 rsi_dbg(INFO_ZONE, "Cancel remain on channel\n");
1740
1741 mutex_lock(&common->mutex);
1742 if (!timer_pending(&common->roc_timer)) {
1743 mutex_unlock(&common->mutex);
1744 return 0;
1745 }
1746
1747 del_timer(&common->roc_timer);
1748
1749 rsi_resume_conn_channel(common);
1750 mutex_unlock(&common->mutex);
1751
1752 return 0;
1753}
1754
1755#ifdef CONFIG_PM
1756static const struct wiphy_wowlan_support rsi_wowlan_support = {
1757 .flags = WIPHY_WOWLAN_ANY |
1758 WIPHY_WOWLAN_MAGIC_PKT |
1759 WIPHY_WOWLAN_DISCONNECT |
1760 WIPHY_WOWLAN_GTK_REKEY_FAILURE |
1761 WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
1762 WIPHY_WOWLAN_EAP_IDENTITY_REQ |
1763 WIPHY_WOWLAN_4WAY_HANDSHAKE,
1764};
1765
1766static u16 rsi_wow_map_triggers(struct rsi_common *common,
1767 struct cfg80211_wowlan *wowlan)
1768{
1769 u16 wow_triggers = 0;
1770
1771 rsi_dbg(INFO_ZONE, "Mapping wowlan triggers\n");
1772
1773 if (wowlan->any)
1774 wow_triggers |= RSI_WOW_ANY;
1775 if (wowlan->magic_pkt)
1776 wow_triggers |= RSI_WOW_MAGIC_PKT;
1777 if (wowlan->disconnect)
1778 wow_triggers |= RSI_WOW_DISCONNECT;
1779 if (wowlan->gtk_rekey_failure || wowlan->eap_identity_req ||
1780 wowlan->four_way_handshake)
1781 wow_triggers |= RSI_WOW_GTK_REKEY;
1782
1783 return wow_triggers;
1784}
1785
1786int rsi_config_wowlan(struct rsi_hw *adapter, struct cfg80211_wowlan *wowlan)
1787{
1788 struct rsi_common *common = adapter->priv;
1789 u16 triggers = 0;
1790 u16 rx_filter_word = 0;
1791 struct ieee80211_bss_conf *bss = &adapter->vifs[0]->bss_conf;
1792
1793 rsi_dbg(INFO_ZONE, "Config WoWLAN to device\n");
1794
1795 if (WARN_ON(!wowlan)) {
1796 rsi_dbg(ERR_ZONE, "WoW triggers not enabled\n");
1797 return -EINVAL;
1798 }
1799
1800 triggers = rsi_wow_map_triggers(common, wowlan);
1801 if (!triggers) {
1802 rsi_dbg(ERR_ZONE, "%s:No valid WoW triggers\n", __func__);
1803 return -EINVAL;
1804 }
1805 if (!bss->assoc) {
1806 rsi_dbg(ERR_ZONE,
1807 "Cannot configure WoWLAN (Station not connected)\n");
1808 common->wow_flags |= RSI_WOW_NO_CONNECTION;
1809 return 0;
1810 }
1811 rsi_dbg(INFO_ZONE, "TRIGGERS %x\n", triggers);
1812 rsi_send_wowlan_request(common, triggers, 1);
1813
1814 /**
1815 * Increase the beacon_miss threshold & keep-alive timers in
1816 * vap_update frame
1817 */
1818 rsi_send_vap_dynamic_update(common);
1819
1820 rx_filter_word = (ALLOW_DATA_ASSOC_PEER | DISALLOW_BEACONS);
1821 rsi_send_rx_filter_frame(common, rx_filter_word);
1822 common->wow_flags |= RSI_WOW_ENABLED;
1823
1824 return 0;
1825}
1826EXPORT_SYMBOL(rsi_config_wowlan);
1827
1828static int rsi_mac80211_suspend(struct ieee80211_hw *hw,
1829 struct cfg80211_wowlan *wowlan)
1830{
1831 struct rsi_hw *adapter = hw->priv;
1832 struct rsi_common *common = adapter->priv;
1833
1834 rsi_dbg(INFO_ZONE, "%s: mac80211 suspend\n", __func__);
1835 mutex_lock(&common->mutex);
1836 if (rsi_config_wowlan(adapter, wowlan)) {
1837 rsi_dbg(ERR_ZONE, "Failed to configure WoWLAN\n");
1838 mutex_unlock(&common->mutex);
1839 return 1;
1840 }
1841 mutex_unlock(&common->mutex);
1842
1843 return 0;
1844}
1845
1846static int rsi_mac80211_resume(struct ieee80211_hw *hw)
1847{
1848 u16 rx_filter_word = 0;
1849 struct rsi_hw *adapter = hw->priv;
1850 struct rsi_common *common = adapter->priv;
1851
1852 common->wow_flags = 0;
1853
1854 rsi_dbg(INFO_ZONE, "%s: mac80211 resume\n", __func__);
1855
1856 if (common->hibernate_resume)
1857 return 0;
1858
1859 mutex_lock(&common->mutex);
1860 rsi_send_wowlan_request(common, 0, 0);
1861
1862 rx_filter_word = (ALLOW_DATA_ASSOC_PEER | ALLOW_CTRL_ASSOC_PEER |
1863 ALLOW_MGMT_ASSOC_PEER);
1864 rsi_send_rx_filter_frame(common, rx_filter_word);
1865 mutex_unlock(&common->mutex);
1866
1867 return 0;
1868}
1869
1870#endif
1871
1872static const struct ieee80211_ops mac80211_ops = {
1873 .tx = rsi_mac80211_tx,
1874 .start = rsi_mac80211_start,
1875 .stop = rsi_mac80211_stop,
1876 .add_interface = rsi_mac80211_add_interface,
1877 .remove_interface = rsi_mac80211_remove_interface,
1878 .config = rsi_mac80211_config,
1879 .bss_info_changed = rsi_mac80211_bss_info_changed,
1880 .conf_tx = rsi_mac80211_conf_tx,
1881 .configure_filter = rsi_mac80211_conf_filter,
1882 .set_key = rsi_mac80211_set_key,
1883 .set_rts_threshold = rsi_mac80211_set_rts_threshold,
1884 .set_bitrate_mask = rsi_mac80211_set_rate_mask,
1885 .ampdu_action = rsi_mac80211_ampdu_action,
1886 .sta_add = rsi_mac80211_sta_add,
1887 .sta_remove = rsi_mac80211_sta_remove,
1888 .set_antenna = rsi_mac80211_set_antenna,
1889 .get_antenna = rsi_mac80211_get_antenna,
1890 .rfkill_poll = rsi_mac80211_rfkill_poll,
1891 .remain_on_channel = rsi_mac80211_roc,
1892 .cancel_remain_on_channel = rsi_mac80211_cancel_roc,
1893#ifdef CONFIG_PM
1894 .suspend = rsi_mac80211_suspend,
1895 .resume = rsi_mac80211_resume,
1896#endif
1897};
1898
1899/**
1900 * rsi_mac80211_attach() - This function is used to initialize Mac80211 stack.
1901 * @common: Pointer to the driver private structure.
1902 *
1903 * Return: 0 on success, negative error codes on failure.
1904 */
1905int rsi_mac80211_attach(struct rsi_common *common)
1906{
1907 int status = 0;
1908 struct ieee80211_hw *hw = NULL;
1909 struct wiphy *wiphy = NULL;
1910 struct rsi_hw *adapter = common->priv;
1911 u8 addr_mask[ETH_ALEN] = {0x0, 0x0, 0x0, 0x0, 0x0, 0x3};
1912
1913 rsi_dbg(INIT_ZONE, "%s: Performing mac80211 attach\n", __func__);
1914
1915 hw = ieee80211_alloc_hw(sizeof(struct rsi_hw), &mac80211_ops);
1916 if (!hw) {
1917 rsi_dbg(ERR_ZONE, "%s: ieee80211 hw alloc failed\n", __func__);
1918 return -ENOMEM;
1919 }
1920
1921 wiphy = hw->wiphy;
1922
1923 SET_IEEE80211_DEV(hw, adapter->device);
1924
1925 hw->priv = adapter;
1926 adapter->hw = hw;
1927
1928 ieee80211_hw_set(hw, SIGNAL_DBM);
1929 ieee80211_hw_set(hw, HAS_RATE_CONTROL);
1930 ieee80211_hw_set(hw, AMPDU_AGGREGATION);
1931 ieee80211_hw_set(hw, SUPPORTS_PS);
1932 ieee80211_hw_set(hw, SUPPORTS_DYNAMIC_PS);
1933
1934 hw->queues = MAX_HW_QUEUES;
1935 hw->extra_tx_headroom = RSI_NEEDED_HEADROOM;
1936
1937 hw->max_rates = 1;
1938 hw->max_rate_tries = MAX_RETRIES;
1939 hw->uapsd_queues = RSI_IEEE80211_UAPSD_QUEUES;
1940 hw->uapsd_max_sp_len = IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL;
1941
1942 hw->max_tx_aggregation_subframes = 6;
1943 rsi_register_rates_channels(adapter, NL80211_BAND_2GHZ);
1944 rsi_register_rates_channels(adapter, NL80211_BAND_5GHZ);
1945 hw->rate_control_algorithm = "AARF";
1946
1947 SET_IEEE80211_PERM_ADDR(hw, common->mac_addr);
1948 ether_addr_copy(hw->wiphy->addr_mask, addr_mask);
1949
1950 wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
1951 BIT(NL80211_IFTYPE_AP) |
1952 BIT(NL80211_IFTYPE_P2P_DEVICE) |
1953 BIT(NL80211_IFTYPE_P2P_CLIENT) |
1954 BIT(NL80211_IFTYPE_P2P_GO);
1955
1956 wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
1957 wiphy->retry_short = RETRY_SHORT;
1958 wiphy->retry_long = RETRY_LONG;
1959 wiphy->frag_threshold = IEEE80211_MAX_FRAG_THRESHOLD;
1960 wiphy->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
1961 wiphy->flags = 0;
1962
1963 wiphy->available_antennas_rx = 1;
1964 wiphy->available_antennas_tx = 1;
1965 wiphy->bands[NL80211_BAND_2GHZ] =
1966 &adapter->sbands[NL80211_BAND_2GHZ];
1967 wiphy->bands[NL80211_BAND_5GHZ] =
1968 &adapter->sbands[NL80211_BAND_5GHZ];
1969
1970 /* AP Parameters */
1971 wiphy->max_ap_assoc_sta = rsi_max_ap_stas[common->oper_mode - 1];
1972 common->max_stations = wiphy->max_ap_assoc_sta;
1973 rsi_dbg(ERR_ZONE, "Max Stations Allowed = %d\n", common->max_stations);
1974 hw->sta_data_size = sizeof(struct rsi_sta);
1975 wiphy->flags = WIPHY_FLAG_REPORTS_OBSS;
1976 wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
1977 wiphy->features |= NL80211_FEATURE_INACTIVITY_TIMER;
1978 wiphy->reg_notifier = rsi_reg_notify;
1979
1980#ifdef CONFIG_PM
1981 wiphy->wowlan = &rsi_wowlan_support;
1982#endif
1983
1984 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST);
1985
1986 /* Wi-Fi direct parameters */
1987 wiphy->flags |= WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL;
1988 wiphy->flags |= WIPHY_FLAG_OFFCHAN_TX;
1989 wiphy->max_remain_on_channel_duration = 10000;
1990 hw->max_listen_interval = 10;
1991 wiphy->iface_combinations = rsi_iface_combinations;
1992 wiphy->n_iface_combinations = ARRAY_SIZE(rsi_iface_combinations);
1993
1994 status = ieee80211_register_hw(hw);
1995 if (status)
1996 return status;
1997
1998 return rsi_init_dbgfs(adapter);
1999}