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[mirror_ubuntu-bionic-kernel.git] / drivers / net / wireless / quantenna / qtnfmac / cfg80211.c
1 /*
2 * Copyright (c) 2012-2012 Quantenna Communications, Inc.
3 * All rights reserved.
4 *
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License
7 * as published by the Free Software Foundation; either version 2
8 * of the License, or (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 */
16
17 #include <linux/kernel.h>
18 #include <linux/etherdevice.h>
19 #include <linux/vmalloc.h>
20 #include <linux/ieee80211.h>
21 #include <net/cfg80211.h>
22 #include <net/netlink.h>
23
24 #include "cfg80211.h"
25 #include "commands.h"
26 #include "core.h"
27 #include "util.h"
28 #include "bus.h"
29
30 /* Supported rates to be advertised to the cfg80211 */
31 static struct ieee80211_rate qtnf_rates_2g[] = {
32 {.bitrate = 10, .hw_value = 2, },
33 {.bitrate = 20, .hw_value = 4, },
34 {.bitrate = 55, .hw_value = 11, },
35 {.bitrate = 110, .hw_value = 22, },
36 {.bitrate = 60, .hw_value = 12, },
37 {.bitrate = 90, .hw_value = 18, },
38 {.bitrate = 120, .hw_value = 24, },
39 {.bitrate = 180, .hw_value = 36, },
40 {.bitrate = 240, .hw_value = 48, },
41 {.bitrate = 360, .hw_value = 72, },
42 {.bitrate = 480, .hw_value = 96, },
43 {.bitrate = 540, .hw_value = 108, },
44 };
45
46 /* Supported rates to be advertised to the cfg80211 */
47 static struct ieee80211_rate qtnf_rates_5g[] = {
48 {.bitrate = 60, .hw_value = 12, },
49 {.bitrate = 90, .hw_value = 18, },
50 {.bitrate = 120, .hw_value = 24, },
51 {.bitrate = 180, .hw_value = 36, },
52 {.bitrate = 240, .hw_value = 48, },
53 {.bitrate = 360, .hw_value = 72, },
54 {.bitrate = 480, .hw_value = 96, },
55 {.bitrate = 540, .hw_value = 108, },
56 };
57
58 /* Supported crypto cipher suits to be advertised to cfg80211 */
59 static const u32 qtnf_cipher_suites[] = {
60 WLAN_CIPHER_SUITE_TKIP,
61 WLAN_CIPHER_SUITE_CCMP,
62 WLAN_CIPHER_SUITE_AES_CMAC,
63 };
64
65 /* Supported mgmt frame types to be advertised to cfg80211 */
66 static const struct ieee80211_txrx_stypes
67 qtnf_mgmt_stypes[NUM_NL80211_IFTYPES] = {
68 [NL80211_IFTYPE_STATION] = {
69 .tx = BIT(IEEE80211_STYPE_ACTION >> 4),
70 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
71 BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
72 },
73 [NL80211_IFTYPE_AP] = {
74 .tx = BIT(IEEE80211_STYPE_ACTION >> 4),
75 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
76 BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
77 },
78 };
79
80 static int
81 qtnf_change_virtual_intf(struct wiphy *wiphy,
82 struct net_device *dev,
83 enum nl80211_iftype type,
84 struct vif_params *params)
85 {
86 struct qtnf_vif *vif = qtnf_netdev_get_priv(dev);
87 u8 *mac_addr;
88 int ret;
89
90 if (params)
91 mac_addr = params->macaddr;
92 else
93 mac_addr = NULL;
94
95 qtnf_scan_done(vif->mac, true);
96
97 ret = qtnf_cmd_send_change_intf_type(vif, type, mac_addr);
98 if (ret) {
99 pr_err("VIF%u.%u: failed to change VIF type: %d\n",
100 vif->mac->macid, vif->vifid, ret);
101 return ret;
102 }
103
104 vif->wdev.iftype = type;
105 return 0;
106 }
107
108 int qtnf_del_virtual_intf(struct wiphy *wiphy, struct wireless_dev *wdev)
109 {
110 struct net_device *netdev = wdev->netdev;
111 struct qtnf_vif *vif;
112
113 if (WARN_ON(!netdev))
114 return -EFAULT;
115
116 vif = qtnf_netdev_get_priv(wdev->netdev);
117
118 qtnf_scan_done(vif->mac, true);
119
120 if (qtnf_cmd_send_del_intf(vif))
121 pr_err("VIF%u.%u: failed to delete VIF\n", vif->mac->macid,
122 vif->vifid);
123
124 /* Stop data */
125 netif_tx_stop_all_queues(netdev);
126 if (netif_carrier_ok(netdev))
127 netif_carrier_off(netdev);
128
129 if (netdev->reg_state == NETREG_REGISTERED)
130 unregister_netdevice(netdev);
131
132 vif->netdev->ieee80211_ptr = NULL;
133 vif->netdev = NULL;
134 vif->wdev.iftype = NL80211_IFTYPE_UNSPECIFIED;
135 eth_zero_addr(vif->mac_addr);
136
137 return 0;
138 }
139
140 static struct wireless_dev *qtnf_add_virtual_intf(struct wiphy *wiphy,
141 const char *name,
142 unsigned char name_assign_t,
143 enum nl80211_iftype type,
144 struct vif_params *params)
145 {
146 struct qtnf_wmac *mac;
147 struct qtnf_vif *vif;
148 u8 *mac_addr = NULL;
149
150 mac = wiphy_priv(wiphy);
151
152 if (!mac)
153 return ERR_PTR(-EFAULT);
154
155 switch (type) {
156 case NL80211_IFTYPE_STATION:
157 case NL80211_IFTYPE_AP:
158 vif = qtnf_mac_get_free_vif(mac);
159 if (!vif) {
160 pr_err("MAC%u: no free VIF available\n", mac->macid);
161 return ERR_PTR(-EFAULT);
162 }
163
164 eth_zero_addr(vif->mac_addr);
165 vif->bss_priority = QTNF_DEF_BSS_PRIORITY;
166 vif->wdev.wiphy = wiphy;
167 vif->wdev.iftype = type;
168 vif->sta_state = QTNF_STA_DISCONNECTED;
169 break;
170 default:
171 pr_err("MAC%u: unsupported IF type %d\n", mac->macid, type);
172 return ERR_PTR(-ENOTSUPP);
173 }
174
175 if (params)
176 mac_addr = params->macaddr;
177
178 if (qtnf_cmd_send_add_intf(vif, type, mac_addr)) {
179 pr_err("VIF%u.%u: failed to add VIF\n", mac->macid, vif->vifid);
180 goto err_cmd;
181 }
182
183 if (!is_valid_ether_addr(vif->mac_addr)) {
184 pr_err("VIF%u.%u: FW reported bad MAC: %pM\n",
185 mac->macid, vif->vifid, vif->mac_addr);
186 goto err_mac;
187 }
188
189 if (qtnf_core_net_attach(mac, vif, name, name_assign_t, type)) {
190 pr_err("VIF%u.%u: failed to attach netdev\n", mac->macid,
191 vif->vifid);
192 goto err_net;
193 }
194
195 vif->wdev.netdev = vif->netdev;
196 return &vif->wdev;
197
198 err_net:
199 vif->netdev = NULL;
200 err_mac:
201 qtnf_cmd_send_del_intf(vif);
202 err_cmd:
203 vif->wdev.iftype = NL80211_IFTYPE_UNSPECIFIED;
204
205 return ERR_PTR(-EFAULT);
206 }
207
208 static int qtnf_mgmt_set_appie(struct qtnf_vif *vif,
209 const struct cfg80211_beacon_data *info)
210 {
211 int ret = 0;
212
213 if (!info->beacon_ies || !info->beacon_ies_len) {
214 ret = qtnf_cmd_send_mgmt_set_appie(vif, QLINK_MGMT_FRAME_BEACON,
215 NULL, 0);
216 } else {
217 ret = qtnf_cmd_send_mgmt_set_appie(vif, QLINK_MGMT_FRAME_BEACON,
218 info->beacon_ies,
219 info->beacon_ies_len);
220 }
221
222 if (ret)
223 goto out;
224
225 if (!info->proberesp_ies || !info->proberesp_ies_len) {
226 ret = qtnf_cmd_send_mgmt_set_appie(vif,
227 QLINK_MGMT_FRAME_PROBE_RESP,
228 NULL, 0);
229 } else {
230 ret = qtnf_cmd_send_mgmt_set_appie(vif,
231 QLINK_MGMT_FRAME_PROBE_RESP,
232 info->proberesp_ies,
233 info->proberesp_ies_len);
234 }
235
236 if (ret)
237 goto out;
238
239 if (!info->assocresp_ies || !info->assocresp_ies_len) {
240 ret = qtnf_cmd_send_mgmt_set_appie(vif,
241 QLINK_MGMT_FRAME_ASSOC_RESP,
242 NULL, 0);
243 } else {
244 ret = qtnf_cmd_send_mgmt_set_appie(vif,
245 QLINK_MGMT_FRAME_ASSOC_RESP,
246 info->assocresp_ies,
247 info->assocresp_ies_len);
248 }
249
250 out:
251 return ret;
252 }
253
254 static int qtnf_change_beacon(struct wiphy *wiphy, struct net_device *dev,
255 struct cfg80211_beacon_data *info)
256 {
257 struct qtnf_vif *vif = qtnf_netdev_get_priv(dev);
258
259 if (!(vif->bss_status & QTNF_STATE_AP_START)) {
260 pr_err("VIF%u.%u: not started\n", vif->mac->macid, vif->vifid);
261 return -EFAULT;
262 }
263
264 return qtnf_mgmt_set_appie(vif, info);
265 }
266
267 static int qtnf_start_ap(struct wiphy *wiphy, struct net_device *dev,
268 struct cfg80211_ap_settings *settings)
269 {
270 struct qtnf_vif *vif = qtnf_netdev_get_priv(dev);
271 struct qtnf_wmac *mac = wiphy_priv(wiphy);
272 struct qtnf_bss_config *bss_cfg;
273 int ret;
274
275 if (!cfg80211_chandef_identical(&mac->chandef, &settings->chandef)) {
276 memcpy(&mac->chandef, &settings->chandef, sizeof(mac->chandef));
277 if (vif->vifid != 0)
278 pr_warn("%s: unexpected chan %u (%u MHz)\n", dev->name,
279 settings->chandef.chan->hw_value,
280 settings->chandef.chan->center_freq);
281 }
282
283 bss_cfg = &vif->bss_cfg;
284 memset(bss_cfg, 0, sizeof(*bss_cfg));
285
286 bss_cfg->bcn_period = settings->beacon_interval;
287 bss_cfg->dtim = settings->dtim_period;
288 bss_cfg->auth_type = settings->auth_type;
289 bss_cfg->privacy = settings->privacy;
290
291 bss_cfg->ssid_len = settings->ssid_len;
292 memcpy(&bss_cfg->ssid, settings->ssid, bss_cfg->ssid_len);
293
294 memcpy(&bss_cfg->crypto, &settings->crypto,
295 sizeof(struct cfg80211_crypto_settings));
296
297 ret = qtnf_cmd_send_config_ap(vif);
298 if (ret) {
299 pr_err("VIF%u.%u: failed to push config to FW\n",
300 vif->mac->macid, vif->vifid);
301 goto out;
302 }
303
304 if (!(vif->bss_status & QTNF_STATE_AP_CONFIG)) {
305 pr_err("VIF%u.%u: AP config failed in FW\n", vif->mac->macid,
306 vif->vifid);
307 ret = -EFAULT;
308 goto out;
309 }
310
311 ret = qtnf_mgmt_set_appie(vif, &settings->beacon);
312 if (ret) {
313 pr_err("VIF%u.%u: failed to add IEs to beacon\n",
314 vif->mac->macid, vif->vifid);
315 goto out;
316 }
317
318 ret = qtnf_cmd_send_start_ap(vif);
319 if (ret) {
320 pr_err("VIF%u.%u: failed to start AP\n", vif->mac->macid,
321 vif->vifid);
322 goto out;
323 }
324
325 if (!(vif->bss_status & QTNF_STATE_AP_START)) {
326 pr_err("VIF%u.%u: FW failed to start AP operation\n",
327 vif->mac->macid, vif->vifid);
328 ret = -EFAULT;
329 }
330
331 out:
332 return ret;
333 }
334
335 static int qtnf_stop_ap(struct wiphy *wiphy, struct net_device *dev)
336 {
337 struct qtnf_vif *vif = qtnf_netdev_get_priv(dev);
338 int ret;
339
340 qtnf_scan_done(vif->mac, true);
341
342 ret = qtnf_cmd_send_stop_ap(vif);
343 if (ret) {
344 pr_err("VIF%u.%u: failed to stop AP operation in FW\n",
345 vif->mac->macid, vif->vifid);
346 vif->bss_status &= ~QTNF_STATE_AP_START;
347 vif->bss_status &= ~QTNF_STATE_AP_CONFIG;
348
349 netif_carrier_off(vif->netdev);
350 }
351
352 return ret;
353 }
354
355 static int qtnf_set_wiphy_params(struct wiphy *wiphy, u32 changed)
356 {
357 struct qtnf_wmac *mac = wiphy_priv(wiphy);
358 struct qtnf_vif *vif;
359 int ret;
360
361 vif = qtnf_mac_get_base_vif(mac);
362 if (!vif) {
363 pr_err("MAC%u: primary VIF is not configured\n", mac->macid);
364 return -EFAULT;
365 }
366
367 if (changed & (WIPHY_PARAM_RETRY_LONG | WIPHY_PARAM_RETRY_SHORT)) {
368 pr_err("MAC%u: can't modify retry params\n", mac->macid);
369 return -EOPNOTSUPP;
370 }
371
372 ret = qtnf_cmd_send_update_phy_params(mac, changed);
373 if (ret)
374 pr_err("MAC%u: failed to update PHY params\n", mac->macid);
375
376 return ret;
377 }
378
379 static void
380 qtnf_mgmt_frame_register(struct wiphy *wiphy, struct wireless_dev *wdev,
381 u16 frame_type, bool reg)
382 {
383 struct qtnf_vif *vif = qtnf_netdev_get_priv(wdev->netdev);
384 u16 mgmt_type;
385 u16 new_mask;
386 u16 qlink_frame_type = 0;
387
388 mgmt_type = (frame_type & IEEE80211_FCTL_STYPE) >> 4;
389
390 if (reg)
391 new_mask = vif->mgmt_frames_bitmask | BIT(mgmt_type);
392 else
393 new_mask = vif->mgmt_frames_bitmask & ~BIT(mgmt_type);
394
395 if (new_mask == vif->mgmt_frames_bitmask)
396 return;
397
398 switch (frame_type & IEEE80211_FCTL_STYPE) {
399 case IEEE80211_STYPE_PROBE_REQ:
400 qlink_frame_type = QLINK_MGMT_FRAME_PROBE_REQ;
401 break;
402 case IEEE80211_STYPE_ACTION:
403 qlink_frame_type = QLINK_MGMT_FRAME_ACTION;
404 break;
405 default:
406 pr_warn("VIF%u.%u: unsupported frame type: %X\n",
407 vif->mac->macid, vif->vifid,
408 (frame_type & IEEE80211_FCTL_STYPE) >> 4);
409 return;
410 }
411
412 if (qtnf_cmd_send_register_mgmt(vif, qlink_frame_type, reg)) {
413 pr_warn("VIF%u.%u: failed to %sregister mgmt frame type 0x%x\n",
414 vif->mac->macid, vif->vifid, reg ? "" : "un",
415 frame_type);
416 return;
417 }
418
419 vif->mgmt_frames_bitmask = new_mask;
420 pr_debug("VIF%u.%u: %sregistered mgmt frame type 0x%x\n",
421 vif->mac->macid, vif->vifid, reg ? "" : "un", frame_type);
422 }
423
424 static int
425 qtnf_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
426 struct cfg80211_mgmt_tx_params *params, u64 *cookie)
427 {
428 struct qtnf_vif *vif = qtnf_netdev_get_priv(wdev->netdev);
429 const struct ieee80211_mgmt *mgmt_frame = (void *)params->buf;
430 u32 short_cookie = prandom_u32();
431 u16 flags = 0;
432
433 *cookie = short_cookie;
434
435 if (params->offchan)
436 flags |= QLINK_MGMT_FRAME_TX_FLAG_OFFCHAN;
437
438 if (params->no_cck)
439 flags |= QLINK_MGMT_FRAME_TX_FLAG_NO_CCK;
440
441 if (params->dont_wait_for_ack)
442 flags |= QLINK_MGMT_FRAME_TX_FLAG_ACK_NOWAIT;
443
444 pr_debug("%s freq:%u; FC:%.4X; DA:%pM; len:%zu; C:%.8X; FL:%.4X\n",
445 wdev->netdev->name, params->chan->center_freq,
446 le16_to_cpu(mgmt_frame->frame_control), mgmt_frame->da,
447 params->len, short_cookie, flags);
448
449 return qtnf_cmd_send_mgmt_frame(vif, short_cookie, flags,
450 params->chan->center_freq,
451 params->buf, params->len);
452 }
453
454 static int
455 qtnf_get_station(struct wiphy *wiphy, struct net_device *dev,
456 const u8 *mac, struct station_info *sinfo)
457 {
458 struct qtnf_vif *vif = qtnf_netdev_get_priv(dev);
459
460 return qtnf_cmd_get_sta_info(vif, mac, sinfo);
461 }
462
463 static int
464 qtnf_dump_station(struct wiphy *wiphy, struct net_device *dev,
465 int idx, u8 *mac, struct station_info *sinfo)
466 {
467 struct qtnf_vif *vif = qtnf_netdev_get_priv(dev);
468 const struct qtnf_sta_node *sta_node;
469 int ret;
470
471 sta_node = qtnf_sta_list_lookup_index(&vif->sta_list, idx);
472
473 if (unlikely(!sta_node))
474 return -ENOENT;
475
476 ether_addr_copy(mac, sta_node->mac_addr);
477
478 ret = qtnf_cmd_get_sta_info(vif, sta_node->mac_addr, sinfo);
479
480 if (unlikely(ret == -ENOENT)) {
481 qtnf_sta_list_del(&vif->sta_list, mac);
482 cfg80211_del_sta(vif->netdev, mac, GFP_KERNEL);
483 sinfo->filled = 0;
484 }
485
486 return ret;
487 }
488
489 static int qtnf_add_key(struct wiphy *wiphy, struct net_device *dev,
490 u8 key_index, bool pairwise, const u8 *mac_addr,
491 struct key_params *params)
492 {
493 struct qtnf_vif *vif = qtnf_netdev_get_priv(dev);
494 int ret;
495
496 ret = qtnf_cmd_send_add_key(vif, key_index, pairwise, mac_addr, params);
497 if (ret)
498 pr_err("VIF%u.%u: failed to add key: cipher=%x idx=%u pw=%u\n",
499 vif->mac->macid, vif->vifid, params->cipher, key_index,
500 pairwise);
501
502 return ret;
503 }
504
505 static int qtnf_del_key(struct wiphy *wiphy, struct net_device *dev,
506 u8 key_index, bool pairwise, const u8 *mac_addr)
507 {
508 struct qtnf_vif *vif = qtnf_netdev_get_priv(dev);
509 int ret;
510
511 ret = qtnf_cmd_send_del_key(vif, key_index, pairwise, mac_addr);
512 if (ret)
513 pr_err("VIF%u.%u: failed to delete key: idx=%u pw=%u\n",
514 vif->mac->macid, vif->vifid, key_index, pairwise);
515
516 return ret;
517 }
518
519 static int qtnf_set_default_key(struct wiphy *wiphy, struct net_device *dev,
520 u8 key_index, bool unicast, bool multicast)
521 {
522 struct qtnf_vif *vif = qtnf_netdev_get_priv(dev);
523 int ret;
524
525 ret = qtnf_cmd_send_set_default_key(vif, key_index, unicast, multicast);
526 if (ret)
527 pr_err("VIF%u.%u: failed to set dflt key: idx=%u uc=%u mc=%u\n",
528 vif->mac->macid, vif->vifid, key_index, unicast,
529 multicast);
530
531 return ret;
532 }
533
534 static int
535 qtnf_set_default_mgmt_key(struct wiphy *wiphy, struct net_device *dev,
536 u8 key_index)
537 {
538 struct qtnf_vif *vif = qtnf_netdev_get_priv(dev);
539 int ret;
540
541 ret = qtnf_cmd_send_set_default_mgmt_key(vif, key_index);
542 if (ret)
543 pr_err("VIF%u.%u: failed to set default MGMT key: idx=%u\n",
544 vif->mac->macid, vif->vifid, key_index);
545
546 return ret;
547 }
548
549 static int
550 qtnf_change_station(struct wiphy *wiphy, struct net_device *dev,
551 const u8 *mac, struct station_parameters *params)
552 {
553 struct qtnf_vif *vif = qtnf_netdev_get_priv(dev);
554 int ret;
555
556 ret = qtnf_cmd_send_change_sta(vif, mac, params);
557 if (ret)
558 pr_err("VIF%u.%u: failed to change STA %pM\n",
559 vif->mac->macid, vif->vifid, mac);
560
561 return ret;
562 }
563
564 static int
565 qtnf_del_station(struct wiphy *wiphy, struct net_device *dev,
566 struct station_del_parameters *params)
567 {
568 struct qtnf_vif *vif = qtnf_netdev_get_priv(dev);
569 int ret;
570
571 if (params->mac &&
572 (vif->wdev.iftype == NL80211_IFTYPE_AP) &&
573 !is_broadcast_ether_addr(params->mac) &&
574 !qtnf_sta_list_lookup(&vif->sta_list, params->mac))
575 return 0;
576
577 ret = qtnf_cmd_send_del_sta(vif, params);
578 if (ret)
579 pr_err("VIF%u.%u: failed to delete STA %pM\n",
580 vif->mac->macid, vif->vifid, params->mac);
581 return ret;
582 }
583
584 static void qtnf_scan_timeout(unsigned long data)
585 {
586 struct qtnf_wmac *mac = (struct qtnf_wmac *)data;
587
588 pr_warn("mac%d scan timed out\n", mac->macid);
589 qtnf_scan_done(mac, true);
590 }
591
592 static int
593 qtnf_scan(struct wiphy *wiphy, struct cfg80211_scan_request *request)
594 {
595 struct qtnf_wmac *mac = wiphy_priv(wiphy);
596
597 mac->scan_req = request;
598
599 if (qtnf_cmd_send_scan(mac)) {
600 pr_err("MAC%u: failed to start scan\n", mac->macid);
601 mac->scan_req = NULL;
602 return -EFAULT;
603 }
604
605 mac->scan_timeout.data = (unsigned long)mac;
606 mac->scan_timeout.function = qtnf_scan_timeout;
607 mod_timer(&mac->scan_timeout,
608 jiffies + QTNF_SCAN_TIMEOUT_SEC * HZ);
609
610 return 0;
611 }
612
613 static int
614 qtnf_connect(struct wiphy *wiphy, struct net_device *dev,
615 struct cfg80211_connect_params *sme)
616 {
617 struct qtnf_vif *vif = qtnf_netdev_get_priv(dev);
618 struct qtnf_wmac *mac = wiphy_priv(wiphy);
619 struct cfg80211_chan_def chandef;
620 struct qtnf_bss_config *bss_cfg;
621 int ret;
622
623 if (vif->wdev.iftype != NL80211_IFTYPE_STATION)
624 return -EOPNOTSUPP;
625
626 if (vif->sta_state != QTNF_STA_DISCONNECTED)
627 return -EBUSY;
628
629 bss_cfg = &vif->bss_cfg;
630 memset(bss_cfg, 0, sizeof(*bss_cfg));
631
632 if (sme->channel) {
633 /* FIXME: need to set proper nl80211_channel_type value */
634 cfg80211_chandef_create(&chandef, sme->channel,
635 NL80211_CHAN_HT20);
636 /* fall-back to minimal safe chandef description */
637 if (!cfg80211_chandef_valid(&chandef))
638 cfg80211_chandef_create(&chandef, sme->channel,
639 NL80211_CHAN_HT20);
640
641 memcpy(&mac->chandef, &chandef, sizeof(mac->chandef));
642 }
643
644 bss_cfg->ssid_len = sme->ssid_len;
645 memcpy(&bss_cfg->ssid, sme->ssid, bss_cfg->ssid_len);
646 bss_cfg->auth_type = sme->auth_type;
647 bss_cfg->privacy = sme->privacy;
648 bss_cfg->mfp = sme->mfp;
649
650 if ((sme->bg_scan_period > 0) &&
651 (sme->bg_scan_period <= QTNF_MAX_BG_SCAN_PERIOD))
652 bss_cfg->bg_scan_period = sme->bg_scan_period;
653 else if (sme->bg_scan_period == -1)
654 bss_cfg->bg_scan_period = QTNF_DEFAULT_BG_SCAN_PERIOD;
655 else
656 bss_cfg->bg_scan_period = 0; /* disabled */
657
658 bss_cfg->connect_flags = 0;
659
660 if (sme->flags & ASSOC_REQ_DISABLE_HT)
661 bss_cfg->connect_flags |= QLINK_STA_CONNECT_DISABLE_HT;
662 if (sme->flags & ASSOC_REQ_DISABLE_VHT)
663 bss_cfg->connect_flags |= QLINK_STA_CONNECT_DISABLE_VHT;
664 if (sme->flags & ASSOC_REQ_USE_RRM)
665 bss_cfg->connect_flags |= QLINK_STA_CONNECT_USE_RRM;
666
667 memcpy(&bss_cfg->crypto, &sme->crypto, sizeof(bss_cfg->crypto));
668 if (sme->bssid)
669 ether_addr_copy(bss_cfg->bssid, sme->bssid);
670 else
671 eth_zero_addr(bss_cfg->bssid);
672
673 ret = qtnf_cmd_send_connect(vif, sme);
674 if (ret) {
675 pr_err("VIF%u.%u: failed to connect\n", vif->mac->macid,
676 vif->vifid);
677 return ret;
678 }
679
680 vif->sta_state = QTNF_STA_CONNECTING;
681 return 0;
682 }
683
684 static int
685 qtnf_disconnect(struct wiphy *wiphy, struct net_device *dev,
686 u16 reason_code)
687 {
688 struct qtnf_wmac *mac = wiphy_priv(wiphy);
689 struct qtnf_vif *vif;
690 int ret;
691
692 vif = qtnf_mac_get_base_vif(mac);
693 if (!vif) {
694 pr_err("MAC%u: primary VIF is not configured\n", mac->macid);
695 return -EFAULT;
696 }
697
698 if (vif->wdev.iftype != NL80211_IFTYPE_STATION)
699 return -EOPNOTSUPP;
700
701 if (vif->sta_state == QTNF_STA_DISCONNECTED)
702 return 0;
703
704 ret = qtnf_cmd_send_disconnect(vif, reason_code);
705 if (ret) {
706 pr_err("VIF%u.%u: failed to disconnect\n", mac->macid,
707 vif->vifid);
708 return ret;
709 }
710
711 vif->sta_state = QTNF_STA_DISCONNECTED;
712 return 0;
713 }
714
715 static int
716 qtnf_dump_survey(struct wiphy *wiphy, struct net_device *dev,
717 int idx, struct survey_info *survey)
718 {
719 struct qtnf_wmac *mac = wiphy_priv(wiphy);
720 struct ieee80211_supported_band *sband;
721 struct cfg80211_chan_def *chandef;
722 struct ieee80211_channel *chan;
723 struct qtnf_chan_stats stats;
724 struct qtnf_vif *vif;
725 int ret;
726
727 vif = qtnf_netdev_get_priv(dev);
728 chandef = &mac->chandef;
729
730 sband = wiphy->bands[NL80211_BAND_2GHZ];
731 if (sband && idx >= sband->n_channels) {
732 idx -= sband->n_channels;
733 sband = NULL;
734 }
735
736 if (!sband)
737 sband = wiphy->bands[NL80211_BAND_5GHZ];
738
739 if (!sband || idx >= sband->n_channels)
740 return -ENOENT;
741
742 chan = &sband->channels[idx];
743 memset(&stats, 0, sizeof(stats));
744
745 survey->channel = chan;
746 survey->filled = 0x0;
747
748 if (chandef->chan) {
749 if (chan->hw_value == chandef->chan->hw_value)
750 survey->filled = SURVEY_INFO_IN_USE;
751 }
752
753 ret = qtnf_cmd_get_chan_stats(mac, chan->hw_value, &stats);
754 switch (ret) {
755 case 0:
756 if (unlikely(stats.chan_num != chan->hw_value)) {
757 pr_err("received stats for channel %d instead of %d\n",
758 stats.chan_num, chan->hw_value);
759 ret = -EINVAL;
760 break;
761 }
762
763 survey->filled |= SURVEY_INFO_TIME |
764 SURVEY_INFO_TIME_SCAN |
765 SURVEY_INFO_TIME_BUSY |
766 SURVEY_INFO_TIME_RX |
767 SURVEY_INFO_TIME_TX |
768 SURVEY_INFO_NOISE_DBM;
769
770 survey->time_scan = stats.cca_try;
771 survey->time = stats.cca_try;
772 survey->time_tx = stats.cca_tx;
773 survey->time_rx = stats.cca_rx;
774 survey->time_busy = stats.cca_busy;
775 survey->noise = stats.chan_noise;
776 break;
777 case -ENOENT:
778 pr_debug("no stats for channel %u\n", chan->hw_value);
779 ret = 0;
780 break;
781 default:
782 pr_debug("failed to get chan(%d) stats from card\n",
783 chan->hw_value);
784 ret = -EINVAL;
785 break;
786 }
787
788 return ret;
789 }
790
791 static int
792 qtnf_get_channel(struct wiphy *wiphy, struct wireless_dev *wdev,
793 struct cfg80211_chan_def *chandef)
794 {
795 struct qtnf_wmac *mac = wiphy_priv(wiphy);
796 struct net_device *ndev = wdev->netdev;
797 struct qtnf_vif *vif;
798
799 if (!ndev)
800 return -ENODEV;
801
802 vif = qtnf_netdev_get_priv(wdev->netdev);
803
804 switch (vif->wdev.iftype) {
805 case NL80211_IFTYPE_STATION:
806 if (vif->sta_state == QTNF_STA_DISCONNECTED) {
807 pr_warn("%s: STA disconnected\n", ndev->name);
808 return -ENODATA;
809 }
810 break;
811 case NL80211_IFTYPE_AP:
812 if (!(vif->bss_status & QTNF_STATE_AP_START)) {
813 pr_warn("%s: AP not started\n", ndev->name);
814 return -ENODATA;
815 }
816 break;
817 default:
818 pr_err("unsupported vif type (%d)\n", vif->wdev.iftype);
819 return -ENODATA;
820 }
821
822 if (!cfg80211_chandef_valid(&mac->chandef)) {
823 pr_err("invalid channel settings on %s\n", ndev->name);
824 return -ENODATA;
825 }
826
827 memcpy(chandef, &mac->chandef, sizeof(*chandef));
828 return 0;
829 }
830
831 static int qtnf_channel_switch(struct wiphy *wiphy, struct net_device *dev,
832 struct cfg80211_csa_settings *params)
833 {
834 struct qtnf_wmac *mac = wiphy_priv(wiphy);
835 struct qtnf_vif *vif = qtnf_netdev_get_priv(dev);
836 int ret;
837
838 pr_debug("%s: chan(%u) count(%u) radar(%u) block_tx(%u)\n", dev->name,
839 params->chandef.chan->hw_value, params->count,
840 params->radar_required, params->block_tx);
841
842 switch (vif->wdev.iftype) {
843 case NL80211_IFTYPE_AP:
844 if (!(vif->bss_status & QTNF_STATE_AP_START)) {
845 pr_warn("AP not started on %s\n", dev->name);
846 return -ENOTCONN;
847 }
848 break;
849 default:
850 pr_err("unsupported vif type (%d) on %s\n",
851 vif->wdev.iftype, dev->name);
852 return -EOPNOTSUPP;
853 }
854
855 if (vif->vifid != 0) {
856 if (!(mac->status & QTNF_MAC_CSA_ACTIVE))
857 return -EOPNOTSUPP;
858
859 if (!cfg80211_chandef_identical(&params->chandef,
860 &mac->csa_chandef))
861 return -EINVAL;
862
863 return 0;
864 }
865
866 if (!cfg80211_chandef_valid(&params->chandef)) {
867 pr_err("%s: invalid channel\n", dev->name);
868 return -EINVAL;
869 }
870
871 if (cfg80211_chandef_identical(&params->chandef, &mac->chandef)) {
872 pr_err("%s: switch request to the same channel\n", dev->name);
873 return -EALREADY;
874 }
875
876 ret = qtnf_cmd_send_chan_switch(mac, params);
877 if (ret)
878 pr_warn("%s: failed to switch to channel (%u)\n",
879 dev->name, params->chandef.chan->hw_value);
880
881 return ret;
882 }
883
884 static struct cfg80211_ops qtn_cfg80211_ops = {
885 .add_virtual_intf = qtnf_add_virtual_intf,
886 .change_virtual_intf = qtnf_change_virtual_intf,
887 .del_virtual_intf = qtnf_del_virtual_intf,
888 .start_ap = qtnf_start_ap,
889 .change_beacon = qtnf_change_beacon,
890 .stop_ap = qtnf_stop_ap,
891 .set_wiphy_params = qtnf_set_wiphy_params,
892 .mgmt_frame_register = qtnf_mgmt_frame_register,
893 .mgmt_tx = qtnf_mgmt_tx,
894 .change_station = qtnf_change_station,
895 .del_station = qtnf_del_station,
896 .get_station = qtnf_get_station,
897 .dump_station = qtnf_dump_station,
898 .add_key = qtnf_add_key,
899 .del_key = qtnf_del_key,
900 .set_default_key = qtnf_set_default_key,
901 .set_default_mgmt_key = qtnf_set_default_mgmt_key,
902 .scan = qtnf_scan,
903 .connect = qtnf_connect,
904 .disconnect = qtnf_disconnect,
905 .dump_survey = qtnf_dump_survey,
906 .get_channel = qtnf_get_channel,
907 .channel_switch = qtnf_channel_switch
908 };
909
910 static void qtnf_cfg80211_reg_notifier(struct wiphy *wiphy_in,
911 struct regulatory_request *req)
912 {
913 struct qtnf_wmac *mac = wiphy_priv(wiphy_in);
914 struct qtnf_bus *bus = mac->bus;
915 struct wiphy *wiphy;
916 unsigned int mac_idx;
917 enum nl80211_band band;
918 int ret;
919
920 pr_debug("MAC%u: initiator=%d alpha=%c%c\n", mac->macid, req->initiator,
921 req->alpha2[0], req->alpha2[1]);
922
923 ret = qtnf_cmd_reg_notify(bus, req);
924 if (ret) {
925 if (ret != -EOPNOTSUPP && ret != -EALREADY)
926 pr_err("failed to update reg domain to %c%c\n",
927 req->alpha2[0], req->alpha2[1]);
928 return;
929 }
930
931 for (mac_idx = 0; mac_idx < QTNF_MAX_MAC; ++mac_idx) {
932 if (!(bus->hw_info.mac_bitmap & (1 << mac_idx)))
933 continue;
934
935 mac = bus->mac[mac_idx];
936 wiphy = priv_to_wiphy(mac);
937
938 for (band = 0; band < NUM_NL80211_BANDS; ++band) {
939 if (!wiphy->bands[band])
940 continue;
941
942 ret = qtnf_cmd_get_mac_chan_info(mac,
943 wiphy->bands[band]);
944 if (ret)
945 pr_err("failed to get chan info for mac %u band %u\n",
946 mac_idx, band);
947 }
948 }
949 }
950
951 void qtnf_band_setup_htvht_caps(struct qtnf_mac_info *macinfo,
952 struct ieee80211_supported_band *band)
953 {
954 struct ieee80211_sta_ht_cap *ht_cap;
955 struct ieee80211_sta_vht_cap *vht_cap;
956
957 ht_cap = &band->ht_cap;
958 ht_cap->ht_supported = true;
959 memcpy(&ht_cap->cap, &macinfo->ht_cap.cap_info,
960 sizeof(u16));
961 ht_cap->ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
962 ht_cap->ampdu_density = IEEE80211_HT_MPDU_DENSITY_NONE;
963 memcpy(&ht_cap->mcs, &macinfo->ht_cap.mcs,
964 sizeof(ht_cap->mcs));
965
966 if (macinfo->phymode_cap & QLINK_PHYMODE_AC) {
967 vht_cap = &band->vht_cap;
968 vht_cap->vht_supported = true;
969 memcpy(&vht_cap->cap,
970 &macinfo->vht_cap.vht_cap_info, sizeof(u32));
971 /* Update MCS support for VHT */
972 memcpy(&vht_cap->vht_mcs,
973 &macinfo->vht_cap.supp_mcs,
974 sizeof(struct ieee80211_vht_mcs_info));
975 }
976 }
977
978 struct wiphy *qtnf_wiphy_allocate(struct qtnf_bus *bus)
979 {
980 struct wiphy *wiphy;
981
982 wiphy = wiphy_new(&qtn_cfg80211_ops, sizeof(struct qtnf_wmac));
983 if (!wiphy)
984 return NULL;
985
986 set_wiphy_dev(wiphy, bus->dev);
987
988 return wiphy;
989 }
990
991 static int qtnf_wiphy_setup_if_comb(struct wiphy *wiphy,
992 struct ieee80211_iface_combination *if_comb,
993 const struct qtnf_mac_info *mac_info)
994 {
995 size_t max_interfaces = 0;
996 u16 interface_modes = 0;
997 size_t i;
998
999 if (unlikely(!mac_info->limits || !mac_info->n_limits))
1000 return -ENOENT;
1001
1002 if_comb->limits = mac_info->limits;
1003 if_comb->n_limits = mac_info->n_limits;
1004
1005 for (i = 0; i < mac_info->n_limits; i++) {
1006 max_interfaces += mac_info->limits[i].max;
1007 interface_modes |= mac_info->limits[i].types;
1008 }
1009
1010 if_comb->num_different_channels = 1;
1011 if_comb->beacon_int_infra_match = true;
1012 if_comb->max_interfaces = max_interfaces;
1013 if_comb->radar_detect_widths = mac_info->radar_detect_widths;
1014 wiphy->interface_modes = interface_modes;
1015
1016 return 0;
1017 }
1018
1019 int qtnf_wiphy_register(struct qtnf_hw_info *hw_info, struct qtnf_wmac *mac)
1020 {
1021 struct wiphy *wiphy = priv_to_wiphy(mac);
1022 struct ieee80211_iface_combination *iface_comb = NULL;
1023 int ret;
1024
1025 if (!wiphy) {
1026 pr_err("invalid wiphy pointer\n");
1027 return -EFAULT;
1028 }
1029
1030 iface_comb = kzalloc(sizeof(*iface_comb), GFP_KERNEL);
1031 if (!iface_comb)
1032 return -ENOMEM;
1033
1034 ret = qtnf_wiphy_setup_if_comb(wiphy, iface_comb, &mac->macinfo);
1035 if (ret)
1036 goto out;
1037
1038 pr_info("MAC%u: phymode=%#x radar=%#x\n", mac->macid,
1039 mac->macinfo.phymode_cap, mac->macinfo.radar_detect_widths);
1040
1041 wiphy->frag_threshold = mac->macinfo.frag_thr;
1042 wiphy->rts_threshold = mac->macinfo.rts_thr;
1043 wiphy->retry_short = mac->macinfo.sretry_limit;
1044 wiphy->retry_long = mac->macinfo.lretry_limit;
1045 wiphy->coverage_class = mac->macinfo.coverage_class;
1046
1047 wiphy->max_scan_ssids = QTNF_MAX_SSID_LIST_LENGTH;
1048 wiphy->max_scan_ie_len = QTNF_MAX_VSIE_LEN;
1049 wiphy->mgmt_stypes = qtnf_mgmt_stypes;
1050 wiphy->max_remain_on_channel_duration = 5000;
1051
1052 wiphy->iface_combinations = iface_comb;
1053 wiphy->n_iface_combinations = 1;
1054 wiphy->max_num_csa_counters = 2;
1055
1056 /* Initialize cipher suits */
1057 wiphy->cipher_suites = qtnf_cipher_suites;
1058 wiphy->n_cipher_suites = ARRAY_SIZE(qtnf_cipher_suites);
1059 wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
1060 wiphy->flags |= WIPHY_FLAG_HAVE_AP_SME |
1061 WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD |
1062 WIPHY_FLAG_AP_UAPSD |
1063 WIPHY_FLAG_HAS_CHANNEL_SWITCH;
1064
1065 wiphy->probe_resp_offload = NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS |
1066 NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS2;
1067
1068 wiphy->available_antennas_tx = mac->macinfo.num_tx_chain;
1069 wiphy->available_antennas_rx = mac->macinfo.num_rx_chain;
1070
1071 wiphy->max_ap_assoc_sta = mac->macinfo.max_ap_assoc_sta;
1072
1073 ether_addr_copy(wiphy->perm_addr, mac->macaddr);
1074
1075 if (hw_info->hw_capab & QLINK_HW_SUPPORTS_REG_UPDATE) {
1076 wiphy->regulatory_flags |= REGULATORY_STRICT_REG |
1077 REGULATORY_CUSTOM_REG;
1078 wiphy->reg_notifier = qtnf_cfg80211_reg_notifier;
1079 wiphy_apply_custom_regulatory(wiphy, hw_info->rd);
1080 } else {
1081 wiphy->regulatory_flags |= REGULATORY_WIPHY_SELF_MANAGED;
1082 }
1083
1084 ret = wiphy_register(wiphy);
1085 if (ret < 0)
1086 goto out;
1087
1088 if (wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED)
1089 ret = regulatory_set_wiphy_regd(wiphy, hw_info->rd);
1090 else if (isalpha(hw_info->rd->alpha2[0]) &&
1091 isalpha(hw_info->rd->alpha2[1]))
1092 ret = regulatory_hint(wiphy, hw_info->rd->alpha2);
1093
1094 out:
1095 if (ret) {
1096 kfree(iface_comb);
1097 return ret;
1098 }
1099
1100 return 0;
1101 }
1102
1103 void qtnf_netdev_updown(struct net_device *ndev, bool up)
1104 {
1105 struct qtnf_vif *vif = qtnf_netdev_get_priv(ndev);
1106
1107 if (qtnf_cmd_send_updown_intf(vif, up))
1108 pr_err("failed to send up/down command to FW\n");
1109 }
1110
1111 void qtnf_virtual_intf_cleanup(struct net_device *ndev)
1112 {
1113 struct qtnf_vif *vif = qtnf_netdev_get_priv(ndev);
1114 struct qtnf_wmac *mac = wiphy_priv(vif->wdev.wiphy);
1115
1116 if (vif->wdev.iftype == NL80211_IFTYPE_STATION) {
1117 switch (vif->sta_state) {
1118 case QTNF_STA_DISCONNECTED:
1119 break;
1120 case QTNF_STA_CONNECTING:
1121 cfg80211_connect_result(vif->netdev,
1122 vif->bss_cfg.bssid, NULL, 0,
1123 NULL, 0,
1124 WLAN_STATUS_UNSPECIFIED_FAILURE,
1125 GFP_KERNEL);
1126 qtnf_disconnect(vif->wdev.wiphy, ndev,
1127 WLAN_REASON_DEAUTH_LEAVING);
1128 break;
1129 case QTNF_STA_CONNECTED:
1130 cfg80211_disconnected(vif->netdev,
1131 WLAN_REASON_DEAUTH_LEAVING,
1132 NULL, 0, 1, GFP_KERNEL);
1133 qtnf_disconnect(vif->wdev.wiphy, ndev,
1134 WLAN_REASON_DEAUTH_LEAVING);
1135 break;
1136 }
1137
1138 vif->sta_state = QTNF_STA_DISCONNECTED;
1139 }
1140
1141 qtnf_scan_done(mac, true);
1142 }
1143
1144 void qtnf_cfg80211_vif_reset(struct qtnf_vif *vif)
1145 {
1146 if (vif->wdev.iftype == NL80211_IFTYPE_STATION) {
1147 switch (vif->sta_state) {
1148 case QTNF_STA_CONNECTING:
1149 cfg80211_connect_result(vif->netdev,
1150 vif->bss_cfg.bssid, NULL, 0,
1151 NULL, 0,
1152 WLAN_STATUS_UNSPECIFIED_FAILURE,
1153 GFP_KERNEL);
1154 break;
1155 case QTNF_STA_CONNECTED:
1156 cfg80211_disconnected(vif->netdev,
1157 WLAN_REASON_DEAUTH_LEAVING,
1158 NULL, 0, 1, GFP_KERNEL);
1159 break;
1160 case QTNF_STA_DISCONNECTED:
1161 break;
1162 }
1163 }
1164
1165 cfg80211_shutdown_all_interfaces(vif->wdev.wiphy);
1166 vif->sta_state = QTNF_STA_DISCONNECTED;
1167 }
1168
1169 void qtnf_band_init_rates(struct ieee80211_supported_band *band)
1170 {
1171 switch (band->band) {
1172 case NL80211_BAND_2GHZ:
1173 band->bitrates = qtnf_rates_2g;
1174 band->n_bitrates = ARRAY_SIZE(qtnf_rates_2g);
1175 break;
1176 case NL80211_BAND_5GHZ:
1177 band->bitrates = qtnf_rates_5g;
1178 band->n_bitrates = ARRAY_SIZE(qtnf_rates_5g);
1179 break;
1180 default:
1181 band->bitrates = NULL;
1182 band->n_bitrates = 0;
1183 break;
1184 }
1185 }
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