This source file includes following definitions.
- qtnf_core_get_mac
- qtnf_netdev_open
- qtnf_netdev_close
- qtnf_netdev_hard_start_xmit
- qtnf_netdev_get_stats64
- qtnf_netdev_tx_timeout
- qtnf_netdev_set_mac_address
- qtnf_mac_init_single_band
- qtnf_mac_init_bands
- qtnf_mac_get_free_vif
- qtnf_mac_get_base_vif
- qtnf_mac_iface_comb_free
- qtnf_mac_ext_caps_free
- qtnf_vif_reset_handler
- qtnf_mac_init_primary_intf
- qtnf_mac_scan_finish
- qtnf_scan_done
- qtnf_mac_scan_timeout
- qtnf_vif_send_data_high_pri
- qtnf_core_mac_alloc
- qtnf_mac_slave_radar_get
- qtnf_core_net_attach
- qtnf_core_mac_detach
- qtnf_core_mac_attach
- qtnf_core_attach
- qtnf_core_detach
- qtnf_is_frame_meta_magic_valid
- qtnf_classify_skb
- qtnf_wake_all_queues
- qtnf_update_rx_stats
- qtnf_update_tx_stats
- qtnf_packet_send_hi_pri
- qtnf_get_debugfs_dir
- qtnf_core_register
- qtnf_core_exit
1
2
3
4 #include <linux/kernel.h>
5 #include <linux/module.h>
6 #include <linux/if_ether.h>
7
8 #include "core.h"
9 #include "bus.h"
10 #include "trans.h"
11 #include "commands.h"
12 #include "cfg80211.h"
13 #include "event.h"
14 #include "util.h"
15
16 #define QTNF_DMP_MAX_LEN 48
17 #define QTNF_PRIMARY_VIF_IDX 0
18
19 static bool slave_radar = true;
20 module_param(slave_radar, bool, 0644);
21 MODULE_PARM_DESC(slave_radar, "set 0 to disable radar detection in slave mode");
22
23 static struct dentry *qtnf_debugfs_dir;
24
25 struct qtnf_frame_meta_info {
26 u8 magic_s;
27 u8 ifidx;
28 u8 macid;
29 u8 magic_e;
30 } __packed;
31
32 struct qtnf_wmac *qtnf_core_get_mac(const struct qtnf_bus *bus, u8 macid)
33 {
34 struct qtnf_wmac *mac = NULL;
35
36 if (unlikely(macid >= QTNF_MAX_MAC)) {
37 pr_err("invalid MAC index %u\n", macid);
38 return NULL;
39 }
40
41 mac = bus->mac[macid];
42
43 if (unlikely(!mac)) {
44 pr_err("MAC%u: not initialized\n", macid);
45 return NULL;
46 }
47
48 return mac;
49 }
50
51
52
53 static int qtnf_netdev_open(struct net_device *ndev)
54 {
55 netif_carrier_off(ndev);
56 qtnf_netdev_updown(ndev, 1);
57 return 0;
58 }
59
60
61
62 static int qtnf_netdev_close(struct net_device *ndev)
63 {
64 netif_carrier_off(ndev);
65 qtnf_virtual_intf_cleanup(ndev);
66 qtnf_netdev_updown(ndev, 0);
67 return 0;
68 }
69
70
71
72 static netdev_tx_t
73 qtnf_netdev_hard_start_xmit(struct sk_buff *skb, struct net_device *ndev)
74 {
75 struct qtnf_vif *vif;
76 struct qtnf_wmac *mac;
77
78 vif = qtnf_netdev_get_priv(ndev);
79
80 if (unlikely(skb->dev != ndev)) {
81 pr_err_ratelimited("invalid skb->dev");
82 dev_kfree_skb_any(skb);
83 return 0;
84 }
85
86 if (unlikely(vif->wdev.iftype == NL80211_IFTYPE_UNSPECIFIED)) {
87 pr_err_ratelimited("%s: VIF not initialized\n", ndev->name);
88 dev_kfree_skb_any(skb);
89 return 0;
90 }
91
92 mac = vif->mac;
93 if (unlikely(!mac)) {
94 pr_err_ratelimited("%s: NULL mac pointer", ndev->name);
95 dev_kfree_skb_any(skb);
96 return 0;
97 }
98
99 if (!skb->len || (skb->len > ETH_FRAME_LEN)) {
100 pr_err_ratelimited("%s: invalid skb len %d\n", ndev->name,
101 skb->len);
102 dev_kfree_skb_any(skb);
103 ndev->stats.tx_dropped++;
104 return 0;
105 }
106
107
108 vif->cons_tx_timeout_cnt = 0;
109
110 return qtnf_bus_data_tx(mac->bus, skb);
111 }
112
113
114
115 static void qtnf_netdev_get_stats64(struct net_device *ndev,
116 struct rtnl_link_stats64 *stats)
117 {
118 struct qtnf_vif *vif = qtnf_netdev_get_priv(ndev);
119 unsigned int start;
120 int cpu;
121
122 netdev_stats_to_stats64(stats, &ndev->stats);
123
124 if (!vif->stats64)
125 return;
126
127 for_each_possible_cpu(cpu) {
128 struct pcpu_sw_netstats *stats64;
129 u64 rx_packets, rx_bytes;
130 u64 tx_packets, tx_bytes;
131
132 stats64 = per_cpu_ptr(vif->stats64, cpu);
133
134 do {
135 start = u64_stats_fetch_begin_irq(&stats64->syncp);
136 rx_packets = stats64->rx_packets;
137 rx_bytes = stats64->rx_bytes;
138 tx_packets = stats64->tx_packets;
139 tx_bytes = stats64->tx_bytes;
140 } while (u64_stats_fetch_retry_irq(&stats64->syncp, start));
141
142 stats->rx_packets += rx_packets;
143 stats->rx_bytes += rx_bytes;
144 stats->tx_packets += tx_packets;
145 stats->tx_bytes += tx_bytes;
146 }
147 }
148
149
150
151 static void qtnf_netdev_tx_timeout(struct net_device *ndev)
152 {
153 struct qtnf_vif *vif = qtnf_netdev_get_priv(ndev);
154 struct qtnf_wmac *mac;
155 struct qtnf_bus *bus;
156
157 if (unlikely(!vif || !vif->mac || !vif->mac->bus))
158 return;
159
160 mac = vif->mac;
161 bus = mac->bus;
162
163 pr_warn("VIF%u.%u: Tx timeout- %lu\n", mac->macid, vif->vifid, jiffies);
164
165 qtnf_bus_data_tx_timeout(bus, ndev);
166 ndev->stats.tx_errors++;
167
168 if (++vif->cons_tx_timeout_cnt > QTNF_TX_TIMEOUT_TRSHLD) {
169 pr_err("Tx timeout threshold exceeded !\n");
170 pr_err("schedule interface %s reset !\n", netdev_name(ndev));
171 queue_work(bus->workqueue, &vif->reset_work);
172 }
173 }
174
175 static int qtnf_netdev_set_mac_address(struct net_device *ndev, void *addr)
176 {
177 struct qtnf_vif *vif = qtnf_netdev_get_priv(ndev);
178 struct sockaddr *sa = addr;
179 int ret;
180 unsigned char old_addr[ETH_ALEN];
181
182 memcpy(old_addr, sa->sa_data, sizeof(old_addr));
183
184 ret = eth_mac_addr(ndev, sa);
185 if (ret)
186 return ret;
187
188 qtnf_scan_done(vif->mac, true);
189
190 ret = qtnf_cmd_send_change_intf_type(vif, vif->wdev.iftype,
191 vif->wdev.use_4addr,
192 sa->sa_data);
193
194 if (ret)
195 memcpy(ndev->dev_addr, old_addr, ETH_ALEN);
196
197 return ret;
198 }
199
200
201 const struct net_device_ops qtnf_netdev_ops = {
202 .ndo_open = qtnf_netdev_open,
203 .ndo_stop = qtnf_netdev_close,
204 .ndo_start_xmit = qtnf_netdev_hard_start_xmit,
205 .ndo_tx_timeout = qtnf_netdev_tx_timeout,
206 .ndo_get_stats64 = qtnf_netdev_get_stats64,
207 .ndo_set_mac_address = qtnf_netdev_set_mac_address,
208 };
209
210 static int qtnf_mac_init_single_band(struct wiphy *wiphy,
211 struct qtnf_wmac *mac,
212 enum nl80211_band band)
213 {
214 int ret;
215
216 wiphy->bands[band] = kzalloc(sizeof(*wiphy->bands[band]), GFP_KERNEL);
217 if (!wiphy->bands[band])
218 return -ENOMEM;
219
220 wiphy->bands[band]->band = band;
221
222 ret = qtnf_cmd_band_info_get(mac, wiphy->bands[band]);
223 if (ret) {
224 pr_err("MAC%u: band %u: failed to get chans info: %d\n",
225 mac->macid, band, ret);
226 return ret;
227 }
228
229 qtnf_band_init_rates(wiphy->bands[band]);
230
231 return 0;
232 }
233
234 static int qtnf_mac_init_bands(struct qtnf_wmac *mac)
235 {
236 struct wiphy *wiphy = priv_to_wiphy(mac);
237 int ret = 0;
238
239 if (mac->macinfo.bands_cap & QLINK_BAND_2GHZ) {
240 ret = qtnf_mac_init_single_band(wiphy, mac, NL80211_BAND_2GHZ);
241 if (ret)
242 goto out;
243 }
244
245 if (mac->macinfo.bands_cap & QLINK_BAND_5GHZ) {
246 ret = qtnf_mac_init_single_band(wiphy, mac, NL80211_BAND_5GHZ);
247 if (ret)
248 goto out;
249 }
250
251 if (mac->macinfo.bands_cap & QLINK_BAND_60GHZ)
252 ret = qtnf_mac_init_single_band(wiphy, mac, NL80211_BAND_60GHZ);
253
254 out:
255 return ret;
256 }
257
258 struct qtnf_vif *qtnf_mac_get_free_vif(struct qtnf_wmac *mac)
259 {
260 struct qtnf_vif *vif;
261 int i;
262
263 for (i = 0; i < QTNF_MAX_INTF; i++) {
264 vif = &mac->iflist[i];
265 if (vif->wdev.iftype == NL80211_IFTYPE_UNSPECIFIED)
266 return vif;
267 }
268
269 return NULL;
270 }
271
272 struct qtnf_vif *qtnf_mac_get_base_vif(struct qtnf_wmac *mac)
273 {
274 struct qtnf_vif *vif;
275
276 vif = &mac->iflist[QTNF_PRIMARY_VIF_IDX];
277
278 if (vif->wdev.iftype == NL80211_IFTYPE_UNSPECIFIED)
279 return NULL;
280
281 return vif;
282 }
283
284 void qtnf_mac_iface_comb_free(struct qtnf_wmac *mac)
285 {
286 struct ieee80211_iface_combination *comb;
287 int i;
288
289 if (mac->macinfo.if_comb) {
290 for (i = 0; i < mac->macinfo.n_if_comb; i++) {
291 comb = &mac->macinfo.if_comb[i];
292 kfree(comb->limits);
293 comb->limits = NULL;
294 }
295
296 kfree(mac->macinfo.if_comb);
297 mac->macinfo.if_comb = NULL;
298 }
299 }
300
301 void qtnf_mac_ext_caps_free(struct qtnf_wmac *mac)
302 {
303 if (mac->macinfo.extended_capabilities_len) {
304 kfree(mac->macinfo.extended_capabilities);
305 mac->macinfo.extended_capabilities = NULL;
306
307 kfree(mac->macinfo.extended_capabilities_mask);
308 mac->macinfo.extended_capabilities_mask = NULL;
309
310 mac->macinfo.extended_capabilities_len = 0;
311 }
312 }
313
314 static void qtnf_vif_reset_handler(struct work_struct *work)
315 {
316 struct qtnf_vif *vif = container_of(work, struct qtnf_vif, reset_work);
317
318 rtnl_lock();
319
320 if (vif->wdev.iftype == NL80211_IFTYPE_UNSPECIFIED) {
321 rtnl_unlock();
322 return;
323 }
324
325
326 netif_tx_stop_all_queues(vif->netdev);
327 if (netif_carrier_ok(vif->netdev))
328 netif_carrier_off(vif->netdev);
329
330 qtnf_cfg80211_vif_reset(vif);
331
332 rtnl_unlock();
333 }
334
335 static void qtnf_mac_init_primary_intf(struct qtnf_wmac *mac)
336 {
337 struct qtnf_vif *vif = &mac->iflist[QTNF_PRIMARY_VIF_IDX];
338
339 vif->wdev.iftype = NL80211_IFTYPE_STATION;
340 vif->bss_priority = QTNF_DEF_BSS_PRIORITY;
341 vif->wdev.wiphy = priv_to_wiphy(mac);
342 INIT_WORK(&vif->reset_work, qtnf_vif_reset_handler);
343 vif->cons_tx_timeout_cnt = 0;
344 }
345
346 static void qtnf_mac_scan_finish(struct qtnf_wmac *mac, bool aborted)
347 {
348 struct cfg80211_scan_info info = {
349 .aborted = aborted,
350 };
351
352 mutex_lock(&mac->mac_lock);
353
354 if (mac->scan_req) {
355 cfg80211_scan_done(mac->scan_req, &info);
356 mac->scan_req = NULL;
357 }
358
359 mutex_unlock(&mac->mac_lock);
360 }
361
362 void qtnf_scan_done(struct qtnf_wmac *mac, bool aborted)
363 {
364 cancel_delayed_work_sync(&mac->scan_timeout);
365 qtnf_mac_scan_finish(mac, aborted);
366 }
367
368 static void qtnf_mac_scan_timeout(struct work_struct *work)
369 {
370 struct qtnf_wmac *mac =
371 container_of(work, struct qtnf_wmac, scan_timeout.work);
372
373 pr_warn("MAC%d: scan timed out\n", mac->macid);
374 qtnf_mac_scan_finish(mac, true);
375 }
376
377 static void qtnf_vif_send_data_high_pri(struct work_struct *work)
378 {
379 struct qtnf_vif *vif =
380 container_of(work, struct qtnf_vif, high_pri_tx_work);
381 struct sk_buff *skb;
382
383 if (!vif->netdev ||
384 vif->wdev.iftype == NL80211_IFTYPE_UNSPECIFIED)
385 return;
386
387 while ((skb = skb_dequeue(&vif->high_pri_tx_queue))) {
388 qtnf_cmd_send_frame(vif, 0, QLINK_FRAME_TX_FLAG_8023,
389 0, skb->data, skb->len);
390 dev_kfree_skb_any(skb);
391 }
392 }
393
394 static struct qtnf_wmac *qtnf_core_mac_alloc(struct qtnf_bus *bus,
395 unsigned int macid)
396 {
397 struct qtnf_vif *vif;
398 struct wiphy *wiphy;
399 struct qtnf_wmac *mac;
400 unsigned int i;
401
402 wiphy = qtnf_wiphy_allocate(bus);
403 if (!wiphy)
404 return ERR_PTR(-ENOMEM);
405
406 mac = wiphy_priv(wiphy);
407
408 mac->macid = macid;
409 mac->bus = bus;
410 mutex_init(&mac->mac_lock);
411 INIT_DELAYED_WORK(&mac->scan_timeout, qtnf_mac_scan_timeout);
412
413 for (i = 0; i < QTNF_MAX_INTF; i++) {
414 vif = &mac->iflist[i];
415
416 memset(vif, 0, sizeof(*vif));
417 vif->wdev.iftype = NL80211_IFTYPE_UNSPECIFIED;
418 vif->mac = mac;
419 vif->vifid = i;
420 qtnf_sta_list_init(&vif->sta_list);
421 INIT_WORK(&vif->high_pri_tx_work, qtnf_vif_send_data_high_pri);
422 skb_queue_head_init(&vif->high_pri_tx_queue);
423 vif->stats64 = netdev_alloc_pcpu_stats(struct pcpu_sw_netstats);
424 if (!vif->stats64)
425 pr_warn("VIF%u.%u: per cpu stats allocation failed\n",
426 macid, i);
427 }
428
429 qtnf_mac_init_primary_intf(mac);
430 bus->mac[macid] = mac;
431
432 return mac;
433 }
434
435 bool qtnf_mac_slave_radar_get(struct wiphy *wiphy)
436 {
437 return slave_radar;
438 }
439
440 static const struct ethtool_ops qtnf_ethtool_ops = {
441 .get_drvinfo = cfg80211_get_drvinfo,
442 };
443
444 int qtnf_core_net_attach(struct qtnf_wmac *mac, struct qtnf_vif *vif,
445 const char *name, unsigned char name_assign_type)
446 {
447 struct wiphy *wiphy = priv_to_wiphy(mac);
448 struct net_device *dev;
449 void *qdev_vif;
450 int ret;
451
452 dev = alloc_netdev_mqs(sizeof(struct qtnf_vif *), name,
453 name_assign_type, ether_setup, 1, 1);
454 if (!dev) {
455 vif->wdev.iftype = NL80211_IFTYPE_UNSPECIFIED;
456 return -ENOMEM;
457 }
458
459 vif->netdev = dev;
460
461 dev->netdev_ops = &qtnf_netdev_ops;
462 dev->needs_free_netdev = true;
463 dev_net_set(dev, wiphy_net(wiphy));
464 dev->ieee80211_ptr = &vif->wdev;
465 ether_addr_copy(dev->dev_addr, vif->mac_addr);
466 SET_NETDEV_DEV(dev, wiphy_dev(wiphy));
467 dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
468 dev->watchdog_timeo = QTNF_DEF_WDOG_TIMEOUT;
469 dev->tx_queue_len = 100;
470 dev->ethtool_ops = &qtnf_ethtool_ops;
471
472 qdev_vif = netdev_priv(dev);
473 *((void **)qdev_vif) = vif;
474
475 SET_NETDEV_DEV(dev, mac->bus->dev);
476
477 ret = register_netdevice(dev);
478 if (ret) {
479 free_netdev(dev);
480 vif->wdev.iftype = NL80211_IFTYPE_UNSPECIFIED;
481 }
482
483 return ret;
484 }
485
486 static void qtnf_core_mac_detach(struct qtnf_bus *bus, unsigned int macid)
487 {
488 struct qtnf_wmac *mac;
489 struct wiphy *wiphy;
490 struct qtnf_vif *vif;
491 unsigned int i;
492 enum nl80211_band band;
493
494 mac = bus->mac[macid];
495
496 if (!mac)
497 return;
498
499 wiphy = priv_to_wiphy(mac);
500
501 for (i = 0; i < QTNF_MAX_INTF; i++) {
502 vif = &mac->iflist[i];
503 rtnl_lock();
504 if (vif->netdev &&
505 vif->wdev.iftype != NL80211_IFTYPE_UNSPECIFIED) {
506 qtnf_virtual_intf_cleanup(vif->netdev);
507 qtnf_del_virtual_intf(wiphy, &vif->wdev);
508 }
509 rtnl_unlock();
510 qtnf_sta_list_free(&vif->sta_list);
511 free_percpu(vif->stats64);
512 }
513
514 if (mac->wiphy_registered)
515 wiphy_unregister(wiphy);
516
517 for (band = NL80211_BAND_2GHZ; band < NUM_NL80211_BANDS; ++band) {
518 if (!wiphy->bands[band])
519 continue;
520
521 kfree(wiphy->bands[band]->channels);
522 wiphy->bands[band]->n_channels = 0;
523
524 kfree(wiphy->bands[band]);
525 wiphy->bands[band] = NULL;
526 }
527
528 qtnf_mac_iface_comb_free(mac);
529 qtnf_mac_ext_caps_free(mac);
530 kfree(mac->macinfo.wowlan);
531 kfree(mac->rd);
532 mac->rd = NULL;
533 wiphy_free(wiphy);
534 bus->mac[macid] = NULL;
535 }
536
537 static int qtnf_core_mac_attach(struct qtnf_bus *bus, unsigned int macid)
538 {
539 struct qtnf_wmac *mac;
540 struct qtnf_vif *vif;
541 int ret;
542
543 if (!(bus->hw_info.mac_bitmap & BIT(macid))) {
544 pr_info("MAC%u is not active in FW\n", macid);
545 return 0;
546 }
547
548 mac = qtnf_core_mac_alloc(bus, macid);
549 if (IS_ERR(mac)) {
550 pr_err("MAC%u allocation failed\n", macid);
551 return PTR_ERR(mac);
552 }
553
554 ret = qtnf_cmd_get_mac_info(mac);
555 if (ret) {
556 pr_err("MAC%u: failed to get info\n", macid);
557 goto error;
558 }
559
560 vif = qtnf_mac_get_base_vif(mac);
561 if (!vif) {
562 pr_err("MAC%u: primary VIF is not ready\n", macid);
563 ret = -EFAULT;
564 goto error;
565 }
566
567 ret = qtnf_cmd_send_add_intf(vif, vif->wdev.iftype,
568 vif->wdev.use_4addr, vif->mac_addr);
569 if (ret) {
570 pr_err("MAC%u: failed to add VIF\n", macid);
571 goto error;
572 }
573
574 ret = qtnf_cmd_send_get_phy_params(mac);
575 if (ret) {
576 pr_err("MAC%u: failed to get PHY settings\n", macid);
577 goto error;
578 }
579
580 ret = qtnf_mac_init_bands(mac);
581 if (ret) {
582 pr_err("MAC%u: failed to init bands\n", macid);
583 goto error;
584 }
585
586 ret = qtnf_wiphy_register(&bus->hw_info, mac);
587 if (ret) {
588 pr_err("MAC%u: wiphy registration failed\n", macid);
589 goto error;
590 }
591
592 mac->wiphy_registered = 1;
593
594 rtnl_lock();
595
596 ret = qtnf_core_net_attach(mac, vif, "wlan%d", NET_NAME_ENUM);
597 rtnl_unlock();
598
599 if (ret) {
600 pr_err("MAC%u: failed to attach netdev\n", macid);
601 vif->wdev.iftype = NL80211_IFTYPE_UNSPECIFIED;
602 vif->netdev = NULL;
603 goto error;
604 }
605
606 pr_debug("MAC%u initialized\n", macid);
607
608 return 0;
609
610 error:
611 qtnf_core_mac_detach(bus, macid);
612 return ret;
613 }
614
615 int qtnf_core_attach(struct qtnf_bus *bus)
616 {
617 unsigned int i;
618 int ret;
619
620 qtnf_trans_init(bus);
621 qtnf_bus_data_rx_start(bus);
622
623 bus->workqueue = alloc_ordered_workqueue("QTNF_BUS", 0);
624 if (!bus->workqueue) {
625 pr_err("failed to alloc main workqueue\n");
626 ret = -ENOMEM;
627 goto error;
628 }
629
630 bus->hprio_workqueue = alloc_workqueue("QTNF_HPRI", WQ_HIGHPRI, 0);
631 if (!bus->hprio_workqueue) {
632 pr_err("failed to alloc high prio workqueue\n");
633 ret = -ENOMEM;
634 goto error;
635 }
636
637 INIT_WORK(&bus->event_work, qtnf_event_work_handler);
638
639 ret = qtnf_cmd_send_init_fw(bus);
640 if (ret) {
641 pr_err("failed to init FW: %d\n", ret);
642 goto error;
643 }
644
645 bus->fw_state = QTNF_FW_STATE_ACTIVE;
646 ret = qtnf_cmd_get_hw_info(bus);
647 if (ret) {
648 pr_err("failed to get HW info: %d\n", ret);
649 goto error;
650 }
651
652 if (bus->hw_info.ql_proto_ver != QLINK_PROTO_VER) {
653 pr_err("qlink version mismatch %u != %u\n",
654 QLINK_PROTO_VER, bus->hw_info.ql_proto_ver);
655 ret = -EPROTONOSUPPORT;
656 goto error;
657 }
658
659 if (bus->hw_info.num_mac > QTNF_MAX_MAC) {
660 pr_err("no support for number of MACs=%u\n",
661 bus->hw_info.num_mac);
662 ret = -ERANGE;
663 goto error;
664 }
665
666 for (i = 0; i < bus->hw_info.num_mac; i++) {
667 ret = qtnf_core_mac_attach(bus, i);
668
669 if (ret) {
670 pr_err("MAC%u: attach failed: %d\n", i, ret);
671 goto error;
672 }
673 }
674
675 bus->fw_state = QTNF_FW_STATE_RUNNING;
676 return 0;
677
678 error:
679 qtnf_core_detach(bus);
680 return ret;
681 }
682 EXPORT_SYMBOL_GPL(qtnf_core_attach);
683
684 void qtnf_core_detach(struct qtnf_bus *bus)
685 {
686 unsigned int macid;
687
688 qtnf_bus_data_rx_stop(bus);
689
690 for (macid = 0; macid < QTNF_MAX_MAC; macid++)
691 qtnf_core_mac_detach(bus, macid);
692
693 if (qtnf_fw_is_up(bus))
694 qtnf_cmd_send_deinit_fw(bus);
695
696 bus->fw_state = QTNF_FW_STATE_DETACHED;
697
698 if (bus->workqueue) {
699 flush_workqueue(bus->workqueue);
700 destroy_workqueue(bus->workqueue);
701 bus->workqueue = NULL;
702 }
703
704 if (bus->hprio_workqueue) {
705 flush_workqueue(bus->hprio_workqueue);
706 destroy_workqueue(bus->hprio_workqueue);
707 bus->hprio_workqueue = NULL;
708 }
709
710 qtnf_trans_free(bus);
711 }
712 EXPORT_SYMBOL_GPL(qtnf_core_detach);
713
714 static inline int qtnf_is_frame_meta_magic_valid(struct qtnf_frame_meta_info *m)
715 {
716 return m->magic_s == 0xAB && m->magic_e == 0xBA;
717 }
718
719 struct net_device *qtnf_classify_skb(struct qtnf_bus *bus, struct sk_buff *skb)
720 {
721 struct qtnf_frame_meta_info *meta;
722 struct net_device *ndev = NULL;
723 struct qtnf_wmac *mac;
724 struct qtnf_vif *vif;
725
726 if (unlikely(bus->fw_state != QTNF_FW_STATE_RUNNING))
727 return NULL;
728
729 meta = (struct qtnf_frame_meta_info *)
730 (skb_tail_pointer(skb) - sizeof(*meta));
731
732 if (unlikely(!qtnf_is_frame_meta_magic_valid(meta))) {
733 pr_err_ratelimited("invalid magic 0x%x:0x%x\n",
734 meta->magic_s, meta->magic_e);
735 goto out;
736 }
737
738 if (unlikely(meta->macid >= QTNF_MAX_MAC)) {
739 pr_err_ratelimited("invalid mac(%u)\n", meta->macid);
740 goto out;
741 }
742
743 if (unlikely(meta->ifidx >= QTNF_MAX_INTF)) {
744 pr_err_ratelimited("invalid vif(%u)\n", meta->ifidx);
745 goto out;
746 }
747
748 mac = bus->mac[meta->macid];
749
750 if (unlikely(!mac)) {
751 pr_err_ratelimited("mac(%d) does not exist\n", meta->macid);
752 goto out;
753 }
754
755 vif = &mac->iflist[meta->ifidx];
756
757 if (unlikely(vif->wdev.iftype == NL80211_IFTYPE_UNSPECIFIED)) {
758 pr_err_ratelimited("vif(%u) does not exists\n", meta->ifidx);
759 goto out;
760 }
761
762 ndev = vif->netdev;
763
764 if (unlikely(!ndev)) {
765 pr_err_ratelimited("netdev for wlan%u.%u does not exists\n",
766 meta->macid, meta->ifidx);
767 goto out;
768 }
769
770 __skb_trim(skb, skb->len - sizeof(*meta));
771
772 out:
773 return ndev;
774 }
775 EXPORT_SYMBOL_GPL(qtnf_classify_skb);
776
777 void qtnf_wake_all_queues(struct net_device *ndev)
778 {
779 struct qtnf_vif *vif = qtnf_netdev_get_priv(ndev);
780 struct qtnf_wmac *mac;
781 struct qtnf_bus *bus;
782 int macid;
783 int i;
784
785 if (unlikely(!vif || !vif->mac || !vif->mac->bus))
786 return;
787
788 bus = vif->mac->bus;
789
790 for (macid = 0; macid < QTNF_MAX_MAC; macid++) {
791 if (!(bus->hw_info.mac_bitmap & BIT(macid)))
792 continue;
793
794 mac = bus->mac[macid];
795 for (i = 0; i < QTNF_MAX_INTF; i++) {
796 vif = &mac->iflist[i];
797 if (vif->netdev && netif_queue_stopped(vif->netdev))
798 netif_tx_wake_all_queues(vif->netdev);
799 }
800 }
801 }
802 EXPORT_SYMBOL_GPL(qtnf_wake_all_queues);
803
804 void qtnf_update_rx_stats(struct net_device *ndev, const struct sk_buff *skb)
805 {
806 struct qtnf_vif *vif = qtnf_netdev_get_priv(ndev);
807 struct pcpu_sw_netstats *stats64;
808
809 if (unlikely(!vif || !vif->stats64)) {
810 ndev->stats.rx_packets++;
811 ndev->stats.rx_bytes += skb->len;
812 return;
813 }
814
815 stats64 = this_cpu_ptr(vif->stats64);
816
817 u64_stats_update_begin(&stats64->syncp);
818 stats64->rx_packets++;
819 stats64->rx_bytes += skb->len;
820 u64_stats_update_end(&stats64->syncp);
821 }
822 EXPORT_SYMBOL_GPL(qtnf_update_rx_stats);
823
824 void qtnf_update_tx_stats(struct net_device *ndev, const struct sk_buff *skb)
825 {
826 struct qtnf_vif *vif = qtnf_netdev_get_priv(ndev);
827 struct pcpu_sw_netstats *stats64;
828
829 if (unlikely(!vif || !vif->stats64)) {
830 ndev->stats.tx_packets++;
831 ndev->stats.tx_bytes += skb->len;
832 return;
833 }
834
835 stats64 = this_cpu_ptr(vif->stats64);
836
837 u64_stats_update_begin(&stats64->syncp);
838 stats64->tx_packets++;
839 stats64->tx_bytes += skb->len;
840 u64_stats_update_end(&stats64->syncp);
841 }
842 EXPORT_SYMBOL_GPL(qtnf_update_tx_stats);
843
844 void qtnf_packet_send_hi_pri(struct sk_buff *skb)
845 {
846 struct qtnf_vif *vif = qtnf_netdev_get_priv(skb->dev);
847
848 skb_queue_tail(&vif->high_pri_tx_queue, skb);
849 queue_work(vif->mac->bus->hprio_workqueue, &vif->high_pri_tx_work);
850 }
851 EXPORT_SYMBOL_GPL(qtnf_packet_send_hi_pri);
852
853 struct dentry *qtnf_get_debugfs_dir(void)
854 {
855 return qtnf_debugfs_dir;
856 }
857 EXPORT_SYMBOL_GPL(qtnf_get_debugfs_dir);
858
859 static int __init qtnf_core_register(void)
860 {
861 qtnf_debugfs_dir = debugfs_create_dir(KBUILD_MODNAME, NULL);
862
863 if (IS_ERR(qtnf_debugfs_dir))
864 qtnf_debugfs_dir = NULL;
865
866 return 0;
867 }
868
869 static void __exit qtnf_core_exit(void)
870 {
871 debugfs_remove(qtnf_debugfs_dir);
872 }
873
874 module_init(qtnf_core_register);
875 module_exit(qtnf_core_exit);
876
877 MODULE_AUTHOR("Quantenna Communications");
878 MODULE_DESCRIPTION("Quantenna 802.11 wireless LAN FullMAC driver.");
879 MODULE_LICENSE("GPL");