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ath6kl: Add functionality for starting AP mode
[deliverable/linux.git] / drivers / net / wireless / ath / ath6kl / main.c
CommitLineData
bdcd8170
KV		 1/*
2 * Copyright (c) 2004-2011 Atheros Communications 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 "core.h"
18#include "hif-ops.h"
19#include "cfg80211.h"
20#include "target.h"
21#include "debug.h"
22
23struct ath6kl_sta *ath6kl_find_sta(struct ath6kl *ar, u8 *node_addr)
24{
25 struct ath6kl_sta *conn = NULL;
26 u8 i, max_conn;
27
28 max_conn = (ar->nw_type == AP_NETWORK) ? AP_MAX_NUM_STA : 0;
29
30 for (i = 0; i < max_conn; i++) {
31 if (memcmp(node_addr, ar->sta_list[i].mac, ETH_ALEN) == 0) {
32 conn = &ar->sta_list[i];
33 break;
34 }
35 }
36
37 return conn;
38}
39
40struct ath6kl_sta *ath6kl_find_sta_by_aid(struct ath6kl *ar, u8 aid)
41{
42 struct ath6kl_sta *conn = NULL;
43 u8 ctr;
44
45 for (ctr = 0; ctr < AP_MAX_NUM_STA; ctr++) {
46 if (ar->sta_list[ctr].aid == aid) {
47 conn = &ar->sta_list[ctr];
48 break;
49 }
50 }
51 return conn;
52}
53
54static void ath6kl_add_new_sta(struct ath6kl *ar, u8 *mac, u16 aid, u8 *wpaie,
55 u8 ielen, u8 keymgmt, u8 ucipher, u8 auth)
56{
57 struct ath6kl_sta *sta;
58 u8 free_slot;
59
60 free_slot = aid - 1;
61
62 sta = &ar->sta_list[free_slot];
63 memcpy(sta->mac, mac, ETH_ALEN);
64 memcpy(sta->wpa_ie, wpaie, ielen);
65 sta->aid = aid;
66 sta->keymgmt = keymgmt;
67 sta->ucipher = ucipher;
68 sta->auth = auth;
69
70 ar->sta_list_index = ar->sta_list_index | (1 << free_slot);
71 ar->ap_stats.sta[free_slot].aid = cpu_to_le32(aid);
72}
73
74static void ath6kl_sta_cleanup(struct ath6kl *ar, u8 i)
75{
76 struct ath6kl_sta *sta = &ar->sta_list[i];
77
78 /* empty the queued pkts in the PS queue if any */
79 spin_lock_bh(&sta->psq_lock);
80 skb_queue_purge(&sta->psq);
81 spin_unlock_bh(&sta->psq_lock);
82
83 memset(&ar->ap_stats.sta[sta->aid - 1], 0,
84 sizeof(struct wmi_per_sta_stat));
85 memset(sta->mac, 0, ETH_ALEN);
86 memset(sta->wpa_ie, 0, ATH6KL_MAX_IE);
87 sta->aid = 0;
88 sta->sta_flags = 0;
89
90 ar->sta_list_index = ar->sta_list_index & ~(1 << i);
91
92}
93
94static u8 ath6kl_remove_sta(struct ath6kl *ar, u8 *mac, u16 reason)
95{
96 u8 i, removed = 0;
97
98 if (is_zero_ether_addr(mac))
99 return removed;
100
101 if (is_broadcast_ether_addr(mac)) {
102 ath6kl_dbg(ATH6KL_DBG_TRC, "deleting all station\n");
103
104 for (i = 0; i < AP_MAX_NUM_STA; i++) {
105 if (!is_zero_ether_addr(ar->sta_list[i].mac)) {
106 ath6kl_sta_cleanup(ar, i);
107 removed = 1;
108 }
109 }
110 } else {
111 for (i = 0; i < AP_MAX_NUM_STA; i++) {
112 if (memcmp(ar->sta_list[i].mac, mac, ETH_ALEN) == 0) {
113 ath6kl_dbg(ATH6KL_DBG_TRC,
114 "deleting station %pM aid=%d reason=%d\n",
115 mac, ar->sta_list[i].aid, reason);
116 ath6kl_sta_cleanup(ar, i);
117 removed = 1;
118 break;
119 }
120 }
121 }
122
123 return removed;
124}
125
126enum htc_endpoint_id ath6kl_ac2_endpoint_id(void *devt, u8 ac)
127{
128 struct ath6kl *ar = devt;
129 return ar->ac2ep_map[ac];
130}
131
132struct ath6kl_cookie *ath6kl_alloc_cookie(struct ath6kl *ar)
133{
134 struct ath6kl_cookie *cookie;
135
136 cookie = ar->cookie_list;
137 if (cookie != NULL) {
138 ar->cookie_list = cookie->arc_list_next;
139 ar->cookie_count--;
140 }
141
142 return cookie;
143}
144
145void ath6kl_cookie_init(struct ath6kl *ar)
146{
147 u32 i;
148
149 ar->cookie_list = NULL;
150 ar->cookie_count = 0;
151
152 memset(ar->cookie_mem, 0, sizeof(ar->cookie_mem));
153
154 for (i = 0; i < MAX_COOKIE_NUM; i++)
155 ath6kl_free_cookie(ar, &ar->cookie_mem[i]);
156}
157
158void ath6kl_cookie_cleanup(struct ath6kl *ar)
159{
160 ar->cookie_list = NULL;
161 ar->cookie_count = 0;
162}
163
164void ath6kl_free_cookie(struct ath6kl *ar, struct ath6kl_cookie *cookie)
165{
166 /* Insert first */
167
168 if (!ar || !cookie)
169 return;
170
171 cookie->arc_list_next = ar->cookie_list;
172 ar->cookie_list = cookie;
173 ar->cookie_count++;
174}
175
176/* set the window address register (using 4-byte register access ). */
177static int ath6kl_set_addrwin_reg(struct ath6kl *ar, u32 reg_addr, u32 addr)
178{
179 int status;
180 u8 addr_val[4];
181 s32 i;
182
183 /*
184 * Write bytes 1,2,3 of the register to set the upper address bytes,
185 * the LSB is written last to initiate the access cycle
186 */
187
188 for (i = 1; i <= 3; i++) {
189 /*
190 * Fill the buffer with the address byte value we want to
191 * hit 4 times.
192 */
193 memset(addr_val, ((u8 *)&addr)[i], 4);
194
195 /*
196 * Hit each byte of the register address with a 4-byte
197 * write operation to the same address, this is a harmless
198 * operation.
199 */
200 status = hif_read_write_sync(ar, reg_addr + i, addr_val,
201 4, HIF_WR_SYNC_BYTE_FIX);
202 if (status)
203 break;
204 }
205
206 if (status) {
207 ath6kl_err("failed to write initial bytes of 0x%x to window reg: 0x%X\n",
208 addr, reg_addr);
209 return status;
210 }
211
212 /*
213 * Write the address register again, this time write the whole
214 * 4-byte value. The effect here is that the LSB write causes the
215 * cycle to start, the extra 3 byte write to bytes 1,2,3 has no
216 * effect since we are writing the same values again
217 */
218 status = hif_read_write_sync(ar, reg_addr, (u8 *)(&addr),
219 4, HIF_WR_SYNC_BYTE_INC);
220
221 if (status) {
222 ath6kl_err("failed to write 0x%x to window reg: 0x%X\n",
223 addr, reg_addr);
224 return status;
225 }
226
227 return 0;
228}
229
230/*
231 * Read from the ATH6KL through its diagnostic window. No cooperation from
232 * the Target is required for this.
233 */
234int ath6kl_read_reg_diag(struct ath6kl *ar, u32 *address, u32 *data)
235{
236 int status;
237
238 /* set window register to start read cycle */
239 status = ath6kl_set_addrwin_reg(ar, WINDOW_READ_ADDR_ADDRESS,
240 *address);
241
242 if (status)
243 return status;
244
245 /* read the data */
246 status = hif_read_write_sync(ar, WINDOW_DATA_ADDRESS, (u8 *)data,
247 sizeof(u32), HIF_RD_SYNC_BYTE_INC);
248 if (status) {
249 ath6kl_err("failed to read from window data addr\n");
250 return status;
251 }
252
253 return status;
254}
255
256
257/*
258 * Write to the ATH6KL through its diagnostic window. No cooperation from
259 * the Target is required for this.
260 */
261static int ath6kl_write_reg_diag(struct ath6kl *ar, u32 *address, u32 *data)
262{
263 int status;
264
265 /* set write data */
266 status = hif_read_write_sync(ar, WINDOW_DATA_ADDRESS, (u8 *)data,
267 sizeof(u32), HIF_WR_SYNC_BYTE_INC);
268 if (status) {
269 ath6kl_err("failed to write 0x%x to window data addr\n", *data);
270 return status;
271 }
272
273 /* set window register, which starts the write cycle */
274 return ath6kl_set_addrwin_reg(ar, WINDOW_WRITE_ADDR_ADDRESS,
275 *address);
276}
277
278int ath6kl_access_datadiag(struct ath6kl *ar, u32 address,
279 u8 *data, u32 length, bool read)
280{
281 u32 count;
282 int status = 0;
283
284 for (count = 0; count < length; count += 4, address += 4) {
285 if (read) {
286 status = ath6kl_read_reg_diag(ar, &address,
287 (u32 *) &data[count]);
288 if (status)
289 break;
290 } else {
291 status = ath6kl_write_reg_diag(ar, &address,
292 (u32 *) &data[count]);
293 if (status)
294 break;
295 }
296 }
297
298 return status;
299}
300
31024d99
KF		 301/* FIXME: move to a better place, target.h? */
302#define AR6003_RESET_CONTROL_ADDRESS 0x00004000
303#define AR6004_RESET_CONTROL_ADDRESS 0x00004000
304
bdcd8170
KV		 305static void ath6kl_reset_device(struct ath6kl *ar, u32 target_type,
306 bool wait_fot_compltn, bool cold_reset)
307{
308 int status = 0;
309 u32 address;
310 u32 data;
311
31024d99
KF		 312 if (target_type != TARGET_TYPE_AR6003 &&
313 target_type != TARGET_TYPE_AR6004)
bdcd8170
KV		 314 return;
315
316 data = cold_reset ? RESET_CONTROL_COLD_RST : RESET_CONTROL_MBOX_RST;
317
31024d99
KF		 318 switch (target_type) {
319 case TARGET_TYPE_AR6003:
320 address = AR6003_RESET_CONTROL_ADDRESS;
321 break;
322 case TARGET_TYPE_AR6004:
323 address = AR6004_RESET_CONTROL_ADDRESS;
324 break;
325 default:
326 address = AR6003_RESET_CONTROL_ADDRESS;
327 break;
328 }
329
bdcd8170
KV		 330 status = ath6kl_write_reg_diag(ar, &address, &data);
331
332 if (status)
333 ath6kl_err("failed to reset target\n");
334}
335
336void ath6kl_stop_endpoint(struct net_device *dev, bool keep_profile,
337 bool get_dbglogs)
338{
339 struct ath6kl *ar = ath6kl_priv(dev);
340 static u8 bcast_mac[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
341 bool discon_issued;
342
343 netif_stop_queue(dev);
344
345 /* disable the target and the interrupts associated with it */
346 if (test_bit(WMI_READY, &ar->flag)) {
347 discon_issued = (test_bit(CONNECTED, &ar->flag) ||
348 test_bit(CONNECT_PEND, &ar->flag));
349 ath6kl_disconnect(ar);
350 if (!keep_profile)
351 ath6kl_init_profile_info(ar);
352
353 del_timer(&ar->disconnect_timer);
354
355 clear_bit(WMI_READY, &ar->flag);
356 ath6kl_wmi_shutdown(ar->wmi);
357 clear_bit(WMI_ENABLED, &ar->flag);
358 ar->wmi = NULL;
359
360 /*
361 * After wmi_shudown all WMI events will be dropped. We
362 * need to cleanup the buffers allocated in AP mode and
363 * give disconnect notification to stack, which usually
364 * happens in the disconnect_event. Simulate the disconnect
365 * event by calling the function directly. Sometimes
366 * disconnect_event will be received when the debug logs
367 * are collected.
368 */
369 if (discon_issued)
370 ath6kl_disconnect_event(ar, DISCONNECT_CMD,
371 (ar->nw_type & AP_NETWORK) ?
372 bcast_mac : ar->bssid,
373 0, NULL, 0);
374
375 ar->user_key_ctrl = 0;
376
377 } else {
378 ath6kl_dbg(ATH6KL_DBG_TRC,
379 "%s: wmi is not ready 0x%p 0x%p\n",
380 __func__, ar, ar->wmi);
381
382 /* Shut down WMI if we have started it */
383 if (test_bit(WMI_ENABLED, &ar->flag)) {
384 ath6kl_dbg(ATH6KL_DBG_TRC,
385 "%s: shut down wmi\n", __func__);
386 ath6kl_wmi_shutdown(ar->wmi);
387 clear_bit(WMI_ENABLED, &ar->flag);
388 ar->wmi = NULL;
389 }
390 }
391
392 if (ar->htc_target) {
393 ath6kl_dbg(ATH6KL_DBG_TRC, "%s: shut down htc\n", __func__);
ad226ec2 394 ath6kl_htc_stop(ar->htc_target);
bdcd8170
KV		 395 }
396
397 /*
398 * Try to reset the device if we can. The driver may have been
399 * configure NOT to reset the target during a debug session.
400 */
401 ath6kl_dbg(ATH6KL_DBG_TRC,
402 "attempting to reset target on instance destroy\n");
403 ath6kl_reset_device(ar, ar->target_type, true, true);
404}
405
406static void ath6kl_install_static_wep_keys(struct ath6kl *ar)
407{
408 u8 index;
409 u8 keyusage;
410
411 for (index = WMI_MIN_KEY_INDEX; index <= WMI_MAX_KEY_INDEX; index++) {
412 if (ar->wep_key_list[index].key_len) {
413 keyusage = GROUP_USAGE;
414 if (index == ar->def_txkey_index)
415 keyusage |= TX_USAGE;
416
417 ath6kl_wmi_addkey_cmd(ar->wmi,
418 index,
419 WEP_CRYPT,
420 keyusage,
421 ar->wep_key_list[index].key_len,
422 NULL,
423 ar->wep_key_list[index].key,
424 KEY_OP_INIT_VAL, NULL,
425 NO_SYNC_WMIFLAG);
426 }
427 }
428}
429
430static void ath6kl_connect_ap_mode(struct ath6kl *ar, u16 channel, u8 *bssid,
431 u16 listen_int, u16 beacon_int,
432 u8 assoc_resp_len, u8 *assoc_info)
433{
434 struct net_device *dev = ar->net_dev;
435 struct station_info sinfo;
436 struct ath6kl_req_key *ik;
437 enum crypto_type keyType = NONE_CRYPT;
438
439 if (memcmp(dev->dev_addr, bssid, ETH_ALEN) == 0) {
440 ik = &ar->ap_mode_bkey;
441
442 switch (ar->auth_mode) {
443 case NONE_AUTH:
444 if (ar->prwise_crypto == WEP_CRYPT)
445 ath6kl_install_static_wep_keys(ar);
446 break;
447 case WPA_PSK_AUTH:
448 case WPA2_PSK_AUTH:
449 case (WPA_PSK_AUTH|WPA2_PSK_AUTH):
450 switch (ik->ik_type) {
451 case ATH6KL_CIPHER_TKIP:
452 keyType = TKIP_CRYPT;
453 break;
454 case ATH6KL_CIPHER_AES_CCM:
455 keyType = AES_CRYPT;
456 break;
457 default:
458 goto skip_key;
459 }
460 ath6kl_wmi_addkey_cmd(ar->wmi, ik->ik_keyix, keyType,
461 GROUP_USAGE, ik->ik_keylen,
462 (u8 *)&ik->ik_keyrsc,
463 ik->ik_keydata,
464 KEY_OP_INIT_VAL, ik->ik_macaddr,
465 SYNC_BOTH_WMIFLAG);
466 break;
467 }
468skip_key:
469 set_bit(CONNECTED, &ar->flag);
470 return;
471 }
472
473 ath6kl_dbg(ATH6KL_DBG_TRC, "new station %pM aid=%d\n",
474 bssid, channel);
475
476 ath6kl_add_new_sta(ar, bssid, channel, assoc_info, assoc_resp_len,
477 listen_int & 0xFF, beacon_int,
478 (listen_int >> 8) & 0xFF);
479
480 /* send event to application */
481 memset(&sinfo, 0, sizeof(sinfo));
482
483 /* TODO: sinfo.generation */
484 /* TODO: need to deliver (Re)AssocReq IEs somehow.. change in
485 * cfg80211 needed, e.g., by adding those into sinfo
486 */
487 cfg80211_new_sta(ar->net_dev, bssid, &sinfo, GFP_KERNEL);
488
489 netif_wake_queue(ar->net_dev);
490
491 return;
492}
493
494/* Functions for Tx credit handling */
495void ath6k_credit_init(struct htc_credit_state_info *cred_info,
496 struct list_head *ep_list,
497 int tot_credits)
498{
499 struct htc_endpoint_credit_dist *cur_ep_dist;
500 int count;
501
502 cred_info->cur_free_credits = tot_credits;
503 cred_info->total_avail_credits = tot_credits;
504
505 list_for_each_entry(cur_ep_dist, ep_list, list) {
506 if (cur_ep_dist->endpoint == ENDPOINT_0)
507 continue;
508
509 cur_ep_dist->cred_min = cur_ep_dist->cred_per_msg;
510
511 if (tot_credits > 4)
512 if ((cur_ep_dist->svc_id == WMI_DATA_BK_SVC) ||
513 (cur_ep_dist->svc_id == WMI_DATA_BE_SVC)) {
514 ath6kl_deposit_credit_to_ep(cred_info,
515 cur_ep_dist,
516 cur_ep_dist->cred_min);
517 cur_ep_dist->dist_flags |= HTC_EP_ACTIVE;
518 }
519
520 if (cur_ep_dist->svc_id == WMI_CONTROL_SVC) {
521 ath6kl_deposit_credit_to_ep(cred_info, cur_ep_dist,
522 cur_ep_dist->cred_min);
523 /*
524 * Control service is always marked active, it
525 * never goes inactive EVER.
526 */
527 cur_ep_dist->dist_flags |= HTC_EP_ACTIVE;
528 } else if (cur_ep_dist->svc_id == WMI_DATA_BK_SVC)
529 /* this is the lowest priority data endpoint */
530 cred_info->lowestpri_ep_dist = cur_ep_dist->list;
531
532 /*
533 * Streams have to be created (explicit | implicit) for all
534 * kinds of traffic. BE endpoints are also inactive in the
535 * beginning. When BE traffic starts it creates implicit
536 * streams that redistributes credits.
537 *
538 * Note: all other endpoints have minimums set but are
539 * initially given NO credits. credits will be distributed
540 * as traffic activity demands
541 */
542 }
543
544 WARN_ON(cred_info->cur_free_credits <= 0);
545
546 list_for_each_entry(cur_ep_dist, ep_list, list) {
547 if (cur_ep_dist->endpoint == ENDPOINT_0)
548 continue;
549
550 if (cur_ep_dist->svc_id == WMI_CONTROL_SVC)
551 cur_ep_dist->cred_norm = cur_ep_dist->cred_per_msg;
552 else {
553 /*
554 * For the remaining data endpoints, we assume that
555 * each cred_per_msg are the same. We use a simple
556 * calculation here, we take the remaining credits
557 * and determine how many max messages this can
558 * cover and then set each endpoint's normal value
559 * equal to 3/4 this amount.
560 */
561 count = (cred_info->cur_free_credits /
562 cur_ep_dist->cred_per_msg)
563 * cur_ep_dist->cred_per_msg;
564 count = (count * 3) >> 2;
565 count = max(count, cur_ep_dist->cred_per_msg);
566 cur_ep_dist->cred_norm = count;
567
568 }
569 }
570}
571
572/* initialize and setup credit distribution */
573int ath6k_setup_credit_dist(void *htc_handle,
574 struct htc_credit_state_info *cred_info)
575{
576 u16 servicepriority[5];
577
578 memset(cred_info, 0, sizeof(struct htc_credit_state_info));
579
580 servicepriority[0] = WMI_CONTROL_SVC; /* highest */
581 servicepriority[1] = WMI_DATA_VO_SVC;
582 servicepriority[2] = WMI_DATA_VI_SVC;
583 servicepriority[3] = WMI_DATA_BE_SVC;
584 servicepriority[4] = WMI_DATA_BK_SVC; /* lowest */
585
586 /* set priority list */
ad226ec2 587 ath6kl_htc_set_credit_dist(htc_handle, cred_info, servicepriority, 5);
bdcd8170
KV		 588
589 return 0;
590}
591
592/* reduce an ep's credits back to a set limit */
593static void ath6k_reduce_credits(struct htc_credit_state_info *cred_info,
594 struct htc_endpoint_credit_dist *ep_dist,
595 int limit)
596{
597 int credits;
598
599 ep_dist->cred_assngd = limit;
600
601 if (ep_dist->credits <= limit)
602 return;
603
604 credits = ep_dist->credits - limit;
605 ep_dist->credits -= credits;
606 cred_info->cur_free_credits += credits;
607}
608
609static void ath6k_credit_update(struct htc_credit_state_info *cred_info,
610 struct list_head *epdist_list)
611{
612 struct htc_endpoint_credit_dist *cur_dist_list;
613
614 list_for_each_entry(cur_dist_list, epdist_list, list) {
615 if (cur_dist_list->endpoint == ENDPOINT_0)
616 continue;
617
618 if (cur_dist_list->cred_to_dist > 0) {
619 cur_dist_list->credits +=
620 cur_dist_list->cred_to_dist;
621 cur_dist_list->cred_to_dist = 0;
622 if (cur_dist_list->credits >
623 cur_dist_list->cred_assngd)
624 ath6k_reduce_credits(cred_info,
625 cur_dist_list,
626 cur_dist_list->cred_assngd);
627
628 if (cur_dist_list->credits >
629 cur_dist_list->cred_norm)
630 ath6k_reduce_credits(cred_info, cur_dist_list,
631 cur_dist_list->cred_norm);
632
633 if (!(cur_dist_list->dist_flags & HTC_EP_ACTIVE)) {
634 if (cur_dist_list->txq_depth == 0)
635 ath6k_reduce_credits(cred_info,
636 cur_dist_list, 0);
637 }
638 }
639 }
640}
641
642/*
643 * HTC has an endpoint that needs credits, ep_dist is the endpoint in
644 * question.
645 */
646void ath6k_seek_credits(struct htc_credit_state_info *cred_info,
647 struct htc_endpoint_credit_dist *ep_dist)
648{
649 struct htc_endpoint_credit_dist *curdist_list;
650 int credits = 0;
651 int need;
652
653 if (ep_dist->svc_id == WMI_CONTROL_SVC)
654 goto out;
655
656 if ((ep_dist->svc_id == WMI_DATA_VI_SVC) ||
657 (ep_dist->svc_id == WMI_DATA_VO_SVC))
658 if ((ep_dist->cred_assngd >= ep_dist->cred_norm))
659 goto out;
660
661 /*
662 * For all other services, we follow a simple algorithm of:
663 *
664 * 1. checking the free pool for credits
665 * 2. checking lower priority endpoints for credits to take
666 */
667
668 credits = min(cred_info->cur_free_credits, ep_dist->seek_cred);
669
670 if (credits >= ep_dist->seek_cred)
671 goto out;
672
673 /*
674 * We don't have enough in the free pool, try taking away from
675 * lower priority services The rule for taking away credits:
676 *
677 * 1. Only take from lower priority endpoints
678 * 2. Only take what is allocated above the minimum (never
679 * starve an endpoint completely)
680 * 3. Only take what you need.
681 */
682
683 list_for_each_entry_reverse(curdist_list,
684 &cred_info->lowestpri_ep_dist,
685 list) {
686 if (curdist_list == ep_dist)
687 break;
688
689 need = ep_dist->seek_cred - cred_info->cur_free_credits;
690
691 if ((curdist_list->cred_assngd - need) >=
692 curdist_list->cred_min) {
693 /*
694 * The current one has been allocated more than
695 * it's minimum and it has enough credits assigned
696 * above it's minimum to fulfill our need try to
697 * take away just enough to fulfill our need.
698 */
699 ath6k_reduce_credits(cred_info, curdist_list,
700 curdist_list->cred_assngd - need);
701
702 if (cred_info->cur_free_credits >=
703 ep_dist->seek_cred)
704 break;
705 }
706
707 if (curdist_list->endpoint == ENDPOINT_0)
708 break;
709 }
710
711 credits = min(cred_info->cur_free_credits, ep_dist->seek_cred);
712
713out:
714 /* did we find some credits? */
715 if (credits)
716 ath6kl_deposit_credit_to_ep(cred_info, ep_dist, credits);
717
718 ep_dist->seek_cred = 0;
719}
720
721/* redistribute credits based on activity change */
722static void ath6k_redistribute_credits(struct htc_credit_state_info *info,
723 struct list_head *ep_dist_list)
724{
725 struct htc_endpoint_credit_dist *curdist_list;
726
727 list_for_each_entry(curdist_list, ep_dist_list, list) {
728 if (curdist_list->endpoint == ENDPOINT_0)
729 continue;
730
731 if ((curdist_list->svc_id == WMI_DATA_BK_SVC) ||
732 (curdist_list->svc_id == WMI_DATA_BE_SVC))
733 curdist_list->dist_flags |= HTC_EP_ACTIVE;
734
735 if ((curdist_list->svc_id != WMI_CONTROL_SVC) &&
736 !(curdist_list->dist_flags & HTC_EP_ACTIVE)) {
737 if (curdist_list->txq_depth == 0)
738 ath6k_reduce_credits(info,
739 curdist_list, 0);
740 else
741 ath6k_reduce_credits(info,
742 curdist_list,
743 curdist_list->cred_min);
744 }
745 }
746}
747
748/*
749 *
750 * This function is invoked whenever endpoints require credit
751 * distributions. A lock is held while this function is invoked, this
752 * function shall NOT block. The ep_dist_list is a list of distribution
753 * structures in prioritized order as defined by the call to the
754 * htc_set_credit_dist() api.
755 */
756void ath6k_credit_distribute(struct htc_credit_state_info *cred_info,
757 struct list_head *ep_dist_list,
758 enum htc_credit_dist_reason reason)
759{
760 switch (reason) {
761 case HTC_CREDIT_DIST_SEND_COMPLETE:
762 ath6k_credit_update(cred_info, ep_dist_list);
763 break;
764 case HTC_CREDIT_DIST_ACTIVITY_CHANGE:
765 ath6k_redistribute_credits(cred_info, ep_dist_list);
766 break;
767 default:
768 break;
769 }
770
771 WARN_ON(cred_info->cur_free_credits > cred_info->total_avail_credits);
772 WARN_ON(cred_info->cur_free_credits < 0);
773}
774
775void disconnect_timer_handler(unsigned long ptr)
776{
777 struct net_device *dev = (struct net_device *)ptr;
778 struct ath6kl *ar = ath6kl_priv(dev);
779
780 ath6kl_init_profile_info(ar);
781 ath6kl_disconnect(ar);
782}
783
784void ath6kl_disconnect(struct ath6kl *ar)
785{
786 if (test_bit(CONNECTED, &ar->flag) ||
787 test_bit(CONNECT_PEND, &ar->flag)) {
788 ath6kl_wmi_disconnect_cmd(ar->wmi);
789 /*
790 * Disconnect command is issued, clear the connect pending
791 * flag. The connected flag will be cleared in
792 * disconnect event notification.
793 */
794 clear_bit(CONNECT_PEND, &ar->flag);
795 }
796}
797
abcb344b
KV		 798void ath6kl_deep_sleep_enable(struct ath6kl *ar)
799{
800 switch (ar->sme_state) {
801 case SME_CONNECTING:
802 cfg80211_connect_result(ar->net_dev, ar->bssid, NULL, 0,
803 NULL, 0,
804 WLAN_STATUS_UNSPECIFIED_FAILURE,
805 GFP_KERNEL);
806 break;
807 case SME_CONNECTED:
808 default:
809 /*
810 * FIXME: oddly enough smeState is in DISCONNECTED during
811 * suspend, why? Need to send disconnected event in that
812 * state.
813 */
814 cfg80211_disconnected(ar->net_dev, 0, NULL, 0, GFP_KERNEL);
815 break;
816 }
817
818 if (test_bit(CONNECTED, &ar->flag) ||
819 test_bit(CONNECT_PEND, &ar->flag))
820 ath6kl_wmi_disconnect_cmd(ar->wmi);
821
822 ar->sme_state = SME_DISCONNECTED;
823
824 /* disable scanning */
825 if (ath6kl_wmi_scanparams_cmd(ar->wmi, 0xFFFF, 0, 0, 0, 0, 0, 0, 0,
826 0, 0) != 0)
827 printk(KERN_WARNING "ath6kl: failed to disable scan "
828 "during suspend\n");
829
830 ath6kl_cfg80211_scan_complete_event(ar, -ECANCELED);
831}
832
bdcd8170
KV		 833/* WMI Event handlers */
834
835static const char *get_hw_id_string(u32 id)
836{
837 switch (id) {
838 case AR6003_REV1_VERSION:
839 return "1.0";
840 case AR6003_REV2_VERSION:
841 return "2.0";
842 case AR6003_REV3_VERSION:
843 return "2.1.1";
844 default:
845 return "unknown";
846 }
847}
848
849void ath6kl_ready_event(void *devt, u8 *datap, u32 sw_ver, u32 abi_ver)
850{
851 struct ath6kl *ar = devt;
852 struct net_device *dev = ar->net_dev;
853
854 memcpy(dev->dev_addr, datap, ETH_ALEN);
855 ath6kl_dbg(ATH6KL_DBG_TRC, "%s: mac addr = %pM\n",
856 __func__, dev->dev_addr);
857
858 ar->version.wlan_ver = sw_ver;
859 ar->version.abi_ver = abi_ver;
860
861 snprintf(ar->wdev->wiphy->fw_version,
862 sizeof(ar->wdev->wiphy->fw_version),
863 "%u.%u.%u.%u",
864 (ar->version.wlan_ver & 0xf0000000) >> 28,
865 (ar->version.wlan_ver & 0x0f000000) >> 24,
866 (ar->version.wlan_ver & 0x00ff0000) >> 16,
867 (ar->version.wlan_ver & 0x0000ffff));
868
869 /* indicate to the waiting thread that the ready event was received */
870 set_bit(WMI_READY, &ar->flag);
871 wake_up(&ar->event_wq);
872
873 ath6kl_info("hw %s fw %s\n",
874 get_hw_id_string(ar->wdev->wiphy->hw_version),
875 ar->wdev->wiphy->fw_version);
876}
877
878void ath6kl_scan_complete_evt(struct ath6kl *ar, int status)
879{
880 ath6kl_cfg80211_scan_complete_event(ar, status);
881
882 if (!ar->usr_bss_filter)
883 ath6kl_wmi_bssfilter_cmd(ar->wmi, NONE_BSS_FILTER, 0);
884
885 ath6kl_dbg(ATH6KL_DBG_WLAN_SCAN, "scan complete: %d\n", status);
886}
887
888void ath6kl_connect_event(struct ath6kl *ar, u16 channel, u8 *bssid,
889 u16 listen_int, u16 beacon_int,
890 enum network_type net_type, u8 beacon_ie_len,
891 u8 assoc_req_len, u8 assoc_resp_len,
892 u8 *assoc_info)
893{
894 unsigned long flags;
895
896 if (ar->nw_type == AP_NETWORK) {
897 ath6kl_connect_ap_mode(ar, channel, bssid, listen_int,
898 beacon_int, assoc_resp_len,
899 assoc_info);
900 return;
901 }
902
903 ath6kl_cfg80211_connect_event(ar, channel, bssid,
904 listen_int, beacon_int,
905 net_type, beacon_ie_len,
906 assoc_req_len, assoc_resp_len,
907 assoc_info);
908
909 memcpy(ar->bssid, bssid, sizeof(ar->bssid));
910 ar->bss_ch = channel;
911
912 if ((ar->nw_type == INFRA_NETWORK))
913 ath6kl_wmi_listeninterval_cmd(ar->wmi, ar->listen_intvl_t,
914 ar->listen_intvl_b);
915
916 netif_wake_queue(ar->net_dev);
917
918 /* Update connect & link status atomically */
919 spin_lock_irqsave(&ar->lock, flags);
920 set_bit(CONNECTED, &ar->flag);
921 clear_bit(CONNECT_PEND, &ar->flag);
922 netif_carrier_on(ar->net_dev);
923 spin_unlock_irqrestore(&ar->lock, flags);
924
925 aggr_reset_state(ar->aggr_cntxt);
926 ar->reconnect_flag = 0;
927
928 if ((ar->nw_type == ADHOC_NETWORK) && ar->ibss_ps_enable) {
929 memset(ar->node_map, 0, sizeof(ar->node_map));
930 ar->node_num = 0;
931 ar->next_ep_id = ENDPOINT_2;
932 }
933
934 if (!ar->usr_bss_filter)
935 ath6kl_wmi_bssfilter_cmd(ar->wmi, NONE_BSS_FILTER, 0);
936}
937
938void ath6kl_tkip_micerr_event(struct ath6kl *ar, u8 keyid, bool ismcast)
939{
940 struct ath6kl_sta *sta;
941 u8 tsc[6];
942 /*
943 * For AP case, keyid will have aid of STA which sent pkt with
944 * MIC error. Use this aid to get MAC & send it to hostapd.
945 */
946 if (ar->nw_type == AP_NETWORK) {
947 sta = ath6kl_find_sta_by_aid(ar, (keyid >> 2));
948 if (!sta)
949 return;
950
951 ath6kl_dbg(ATH6KL_DBG_TRC,
952 "ap tkip mic error received from aid=%d\n", keyid);
953
954 memset(tsc, 0, sizeof(tsc)); /* FIX: get correct TSC */
955 cfg80211_michael_mic_failure(ar->net_dev, sta->mac,
956 NL80211_KEYTYPE_PAIRWISE, keyid,
957 tsc, GFP_KERNEL);
958 } else
959 ath6kl_cfg80211_tkip_micerr_event(ar, keyid, ismcast);
960
961}
962
963static void ath6kl_update_target_stats(struct ath6kl *ar, u8 *ptr, u32 len)
964{
965 struct wmi_target_stats *tgt_stats =
966 (struct wmi_target_stats *) ptr;
967 struct target_stats *stats = &ar->target_stats;
968 struct tkip_ccmp_stats *ccmp_stats;
969 struct bss *conn_bss = NULL;
970 struct cserv_stats *c_stats;
971 u8 ac;
972
973 if (len < sizeof(*tgt_stats))
974 return;
975
976 /* update the RSSI of the connected bss */
977 if (test_bit(CONNECTED, &ar->flag)) {
978 conn_bss = ath6kl_wmi_find_node(ar->wmi, ar->bssid);
979 if (conn_bss) {
980 c_stats = &tgt_stats->cserv_stats;
981 conn_bss->ni_rssi =
982 a_sle16_to_cpu(c_stats->cs_ave_beacon_rssi);
983 conn_bss->ni_snr =
984 tgt_stats->cserv_stats.cs_ave_beacon_snr;
985 ath6kl_wmi_node_return(ar->wmi, conn_bss);
986 }
987 }
988
989 ath6kl_dbg(ATH6KL_DBG_TRC, "updating target stats\n");
990
991 stats->tx_pkt += le32_to_cpu(tgt_stats->stats.tx.pkt);
992 stats->tx_byte += le32_to_cpu(tgt_stats->stats.tx.byte);
993 stats->tx_ucast_pkt += le32_to_cpu(tgt_stats->stats.tx.ucast_pkt);
994 stats->tx_ucast_byte += le32_to_cpu(tgt_stats->stats.tx.ucast_byte);
995 stats->tx_mcast_pkt += le32_to_cpu(tgt_stats->stats.tx.mcast_pkt);
996 stats->tx_mcast_byte += le32_to_cpu(tgt_stats->stats.tx.mcast_byte);
997 stats->tx_bcast_pkt += le32_to_cpu(tgt_stats->stats.tx.bcast_pkt);
998 stats->tx_bcast_byte += le32_to_cpu(tgt_stats->stats.tx.bcast_byte);
999 stats->tx_rts_success_cnt +=
1000 le32_to_cpu(tgt_stats->stats.tx.rts_success_cnt);
1001
1002 for (ac = 0; ac < WMM_NUM_AC; ac++)
1003 stats->tx_pkt_per_ac[ac] +=
1004 le32_to_cpu(tgt_stats->stats.tx.pkt_per_ac[ac]);
1005
1006 stats->tx_err += le32_to_cpu(tgt_stats->stats.tx.err);
1007 stats->tx_fail_cnt += le32_to_cpu(tgt_stats->stats.tx.fail_cnt);
1008 stats->tx_retry_cnt += le32_to_cpu(tgt_stats->stats.tx.retry_cnt);
1009 stats->tx_mult_retry_cnt +=
1010 le32_to_cpu(tgt_stats->stats.tx.mult_retry_cnt);
1011 stats->tx_rts_fail_cnt +=
1012 le32_to_cpu(tgt_stats->stats.tx.rts_fail_cnt);
1013 stats->tx_ucast_rate =
1014 ath6kl_wmi_get_rate(a_sle32_to_cpu(tgt_stats->stats.tx.ucast_rate));
1015
1016 stats->rx_pkt += le32_to_cpu(tgt_stats->stats.rx.pkt);
1017 stats->rx_byte += le32_to_cpu(tgt_stats->stats.rx.byte);
1018 stats->rx_ucast_pkt += le32_to_cpu(tgt_stats->stats.rx.ucast_pkt);
1019 stats->rx_ucast_byte += le32_to_cpu(tgt_stats->stats.rx.ucast_byte);
1020 stats->rx_mcast_pkt += le32_to_cpu(tgt_stats->stats.rx.mcast_pkt);
1021 stats->rx_mcast_byte += le32_to_cpu(tgt_stats->stats.rx.mcast_byte);
1022 stats->rx_bcast_pkt += le32_to_cpu(tgt_stats->stats.rx.bcast_pkt);
1023 stats->rx_bcast_byte += le32_to_cpu(tgt_stats->stats.rx.bcast_byte);
1024 stats->rx_frgment_pkt += le32_to_cpu(tgt_stats->stats.rx.frgment_pkt);
1025 stats->rx_err += le32_to_cpu(tgt_stats->stats.rx.err);
1026 stats->rx_crc_err += le32_to_cpu(tgt_stats->stats.rx.crc_err);
1027 stats->rx_key_cache_miss +=
1028 le32_to_cpu(tgt_stats->stats.rx.key_cache_miss);
1029 stats->rx_decrypt_err += le32_to_cpu(tgt_stats->stats.rx.decrypt_err);
1030 stats->rx_dupl_frame += le32_to_cpu(tgt_stats->stats.rx.dupl_frame);
1031 stats->rx_ucast_rate =
1032 ath6kl_wmi_get_rate(a_sle32_to_cpu(tgt_stats->stats.rx.ucast_rate));
1033
1034 ccmp_stats = &tgt_stats->stats.tkip_ccmp_stats;
1035
1036 stats->tkip_local_mic_fail +=
1037 le32_to_cpu(ccmp_stats->tkip_local_mic_fail);
1038 stats->tkip_cnter_measures_invoked +=
1039 le32_to_cpu(ccmp_stats->tkip_cnter_measures_invoked);
1040 stats->tkip_fmt_err += le32_to_cpu(ccmp_stats->tkip_fmt_err);
1041
1042 stats->ccmp_fmt_err += le32_to_cpu(ccmp_stats->ccmp_fmt_err);
1043 stats->ccmp_replays += le32_to_cpu(ccmp_stats->ccmp_replays);
1044
1045 stats->pwr_save_fail_cnt +=
1046 le32_to_cpu(tgt_stats->pm_stats.pwr_save_failure_cnt);
1047 stats->noise_floor_calib =
1048 a_sle32_to_cpu(tgt_stats->noise_floor_calib);
1049
1050 stats->cs_bmiss_cnt +=
1051 le32_to_cpu(tgt_stats->cserv_stats.cs_bmiss_cnt);
1052 stats->cs_low_rssi_cnt +=
1053 le32_to_cpu(tgt_stats->cserv_stats.cs_low_rssi_cnt);
1054 stats->cs_connect_cnt +=
1055 le16_to_cpu(tgt_stats->cserv_stats.cs_connect_cnt);
1056 stats->cs_discon_cnt +=
1057 le16_to_cpu(tgt_stats->cserv_stats.cs_discon_cnt);
1058
1059 stats->cs_ave_beacon_rssi =
1060 a_sle16_to_cpu(tgt_stats->cserv_stats.cs_ave_beacon_rssi);
1061
1062 stats->cs_last_roam_msec =
1063 tgt_stats->cserv_stats.cs_last_roam_msec;
1064 stats->cs_snr = tgt_stats->cserv_stats.cs_snr;
1065 stats->cs_rssi = a_sle16_to_cpu(tgt_stats->cserv_stats.cs_rssi);
1066
1067 stats->lq_val = le32_to_cpu(tgt_stats->lq_val);
1068
1069 stats->wow_pkt_dropped +=
1070 le32_to_cpu(tgt_stats->wow_stats.wow_pkt_dropped);
1071 stats->wow_host_pkt_wakeups +=
1072 tgt_stats->wow_stats.wow_host_pkt_wakeups;
1073 stats->wow_host_evt_wakeups +=
1074 tgt_stats->wow_stats.wow_host_evt_wakeups;
1075 stats->wow_evt_discarded +=
1076 le16_to_cpu(tgt_stats->wow_stats.wow_evt_discarded);
1077
1078 if (test_bit(STATS_UPDATE_PEND, &ar->flag)) {
1079 clear_bit(STATS_UPDATE_PEND, &ar->flag);
1080 wake_up(&ar->event_wq);
1081 }
1082}
1083
1084static void ath6kl_add_le32(__le32 *var, __le32 val)
1085{
1086 *var = cpu_to_le32(le32_to_cpu(*var) + le32_to_cpu(val));
1087}
1088
1089void ath6kl_tgt_stats_event(struct ath6kl *ar, u8 *ptr, u32 len)
1090{
1091 struct wmi_ap_mode_stat *p = (struct wmi_ap_mode_stat *) ptr;
1092 struct wmi_ap_mode_stat *ap = &ar->ap_stats;
1093 struct wmi_per_sta_stat *st_ap, *st_p;
1094 u8 ac;
1095
1096 if (ar->nw_type == AP_NETWORK) {
1097 if (len < sizeof(*p))
1098 return;
1099
1100 for (ac = 0; ac < AP_MAX_NUM_STA; ac++) {
1101 st_ap = &ap->sta[ac];
1102 st_p = &p->sta[ac];
1103
1104 ath6kl_add_le32(&st_ap->tx_bytes, st_p->tx_bytes);
1105 ath6kl_add_le32(&st_ap->tx_pkts, st_p->tx_pkts);
1106 ath6kl_add_le32(&st_ap->tx_error, st_p->tx_error);
1107 ath6kl_add_le32(&st_ap->tx_discard, st_p->tx_discard);
1108 ath6kl_add_le32(&st_ap->rx_bytes, st_p->rx_bytes);
1109 ath6kl_add_le32(&st_ap->rx_pkts, st_p->rx_pkts);
1110 ath6kl_add_le32(&st_ap->rx_error, st_p->rx_error);
1111 ath6kl_add_le32(&st_ap->rx_discard, st_p->rx_discard);
1112 }
1113
1114 } else {
1115 ath6kl_update_target_stats(ar, ptr, len);
1116 }
1117}
1118
1119void ath6kl_wakeup_event(void *dev)
1120{
1121 struct ath6kl *ar = (struct ath6kl *) dev;
1122
1123 wake_up(&ar->event_wq);
1124}
1125
1126void ath6kl_txpwr_rx_evt(void *devt, u8 tx_pwr)
1127{
1128 struct ath6kl *ar = (struct ath6kl *) devt;
1129
1130 ar->tx_pwr = tx_pwr;
1131 wake_up(&ar->event_wq);
1132}
1133
1134void ath6kl_pspoll_event(struct ath6kl *ar, u8 aid)
1135{
1136 struct ath6kl_sta *conn;
1137 struct sk_buff *skb;
1138 bool psq_empty = false;
1139
1140 conn = ath6kl_find_sta_by_aid(ar, aid);
1141
1142 if (!conn)
1143 return;
1144 /*
1145 * Send out a packet queued on ps queue. When the ps queue
1146 * becomes empty update the PVB for this station.
1147 */
1148 spin_lock_bh(&conn->psq_lock);
1149 psq_empty = skb_queue_empty(&conn->psq);
1150 spin_unlock_bh(&conn->psq_lock);
1151
1152 if (psq_empty)
1153 /* TODO: Send out a NULL data frame */
1154 return;
1155
1156 spin_lock_bh(&conn->psq_lock);
1157 skb = skb_dequeue(&conn->psq);
1158 spin_unlock_bh(&conn->psq_lock);
1159
1160 conn->sta_flags |= STA_PS_POLLED;
1161 ath6kl_data_tx(skb, ar->net_dev);
1162 conn->sta_flags &= ~STA_PS_POLLED;
1163
1164 spin_lock_bh(&conn->psq_lock);
1165 psq_empty = skb_queue_empty(&conn->psq);
1166 spin_unlock_bh(&conn->psq_lock);
1167
1168 if (psq_empty)
1169 ath6kl_wmi_set_pvb_cmd(ar->wmi, conn->aid, 0);
1170}
1171
1172void ath6kl_dtimexpiry_event(struct ath6kl *ar)
1173{
1174 bool mcastq_empty = false;
1175 struct sk_buff *skb;
1176
1177 /*
1178 * If there are no associated STAs, ignore the DTIM expiry event.
1179 * There can be potential race conditions where the last associated
1180 * STA may disconnect & before the host could clear the 'Indicate
1181 * DTIM' request to the firmware, the firmware would have just
1182 * indicated a DTIM expiry event. The race is between 'clear DTIM
1183 * expiry cmd' going from the host to the firmware & the DTIM
1184 * expiry event happening from the firmware to the host.
1185 */
1186 if (!ar->sta_list_index)
1187 return;
1188
1189 spin_lock_bh(&ar->mcastpsq_lock);
1190 mcastq_empty = skb_queue_empty(&ar->mcastpsq);
1191 spin_unlock_bh(&ar->mcastpsq_lock);
1192
1193 if (mcastq_empty)
1194 return;
1195
1196 /* set the STA flag to dtim_expired for the frame to go out */
1197 set_bit(DTIM_EXPIRED, &ar->flag);
1198
1199 spin_lock_bh(&ar->mcastpsq_lock);
1200 while ((skb = skb_dequeue(&ar->mcastpsq)) != NULL) {
1201 spin_unlock_bh(&ar->mcastpsq_lock);
1202
1203 ath6kl_data_tx(skb, ar->net_dev);
1204
1205 spin_lock_bh(&ar->mcastpsq_lock);
1206 }
1207 spin_unlock_bh(&ar->mcastpsq_lock);
1208
1209 clear_bit(DTIM_EXPIRED, &ar->flag);
1210
1211 /* clear the LSB of the BitMapCtl field of the TIM IE */
1212 ath6kl_wmi_set_pvb_cmd(ar->wmi, MCAST_AID, 0);
1213}
1214
1215void ath6kl_disconnect_event(struct ath6kl *ar, u8 reason, u8 *bssid,
1216 u8 assoc_resp_len, u8 *assoc_info,
1217 u16 prot_reason_status)
1218{
1219 struct bss *wmi_ssid_node = NULL;
1220 unsigned long flags;
1221
1222 if (ar->nw_type == AP_NETWORK) {
1223 if (!ath6kl_remove_sta(ar, bssid, prot_reason_status))
1224 return;
1225
1226 /* if no more associated STAs, empty the mcast PS q */
1227 if (ar->sta_list_index == 0) {
1228 spin_lock_bh(&ar->mcastpsq_lock);
1229 skb_queue_purge(&ar->mcastpsq);
1230 spin_unlock_bh(&ar->mcastpsq_lock);
1231
1232 /* clear the LSB of the TIM IE's BitMapCtl field */
1233 if (test_bit(WMI_READY, &ar->flag))
1234 ath6kl_wmi_set_pvb_cmd(ar->wmi, MCAST_AID, 0);
1235 }
1236
1237 if (!is_broadcast_ether_addr(bssid)) {
1238 /* send event to application */
1239 cfg80211_del_sta(ar->net_dev, bssid, GFP_KERNEL);
1240 }
1241
1242 clear_bit(CONNECTED, &ar->flag);
1243 return;
1244 }
1245
1246 ath6kl_cfg80211_disconnect_event(ar, reason, bssid,
1247 assoc_resp_len, assoc_info,
1248 prot_reason_status);
1249
1250 aggr_reset_state(ar->aggr_cntxt);
1251
1252 del_timer(&ar->disconnect_timer);
1253
1254 ath6kl_dbg(ATH6KL_DBG_WLAN_CONNECT,
1255 "disconnect reason is %d\n", reason);
1256
1257 /*
1258 * If the event is due to disconnect cmd from the host, only they
1259 * the target would stop trying to connect. Under any other
1260 * condition, target would keep trying to connect.
1261 */
1262 if (reason == DISCONNECT_CMD) {
1263 if (!ar->usr_bss_filter && test_bit(WMI_READY, &ar->flag))
1264 ath6kl_wmi_bssfilter_cmd(ar->wmi, NONE_BSS_FILTER, 0);
1265 } else {
1266 set_bit(CONNECT_PEND, &ar->flag);
1267 if (((reason == ASSOC_FAILED) &&
1268 (prot_reason_status == 0x11)) ||
1269 ((reason == ASSOC_FAILED) && (prot_reason_status == 0x0)
1270 && (ar->reconnect_flag == 1))) {
1271 set_bit(CONNECTED, &ar->flag);
1272 return;
1273 }
1274 }
1275
1276 if ((reason == NO_NETWORK_AVAIL) && test_bit(WMI_READY, &ar->flag)) {
1277 ath6kl_wmi_node_free(ar->wmi, bssid);
1278
1279 /*
1280 * In case any other same SSID nodes are present remove it,
1281 * since those nodes also not available now.
1282 */
1283 do {
1284 /*
1285 * Find the nodes based on SSID and remove it
1286 *
1287 * Note: This case will not work out for
1288 * Hidden-SSID
1289 */
1290 wmi_ssid_node = ath6kl_wmi_find_ssid_node(ar->wmi,
1291 ar->ssid,
1292 ar->ssid_len,
1293 false,
1294 true);
1295
1296 if (wmi_ssid_node)
1297 ath6kl_wmi_node_free(ar->wmi,
1298 wmi_ssid_node->ni_macaddr);
1299
1300 } while (wmi_ssid_node);
1301 }
1302
1303 /* update connect & link status atomically */
1304 spin_lock_irqsave(&ar->lock, flags);
1305 clear_bit(CONNECTED, &ar->flag);
1306 netif_carrier_off(ar->net_dev);
1307 spin_unlock_irqrestore(&ar->lock, flags);
1308
1309 if ((reason != CSERV_DISCONNECT) || (ar->reconnect_flag != 1))
1310 ar->reconnect_flag = 0;
1311
1312 if (reason != CSERV_DISCONNECT)
1313 ar->user_key_ctrl = 0;
1314
1315 netif_stop_queue(ar->net_dev);
1316 memset(ar->bssid, 0, sizeof(ar->bssid));
1317 ar->bss_ch = 0;
1318
1319 ath6kl_tx_data_cleanup(ar);
1320}
1321
1322static int ath6kl_open(struct net_device *dev)
1323{
1324 struct ath6kl *ar = ath6kl_priv(dev);
1325 unsigned long flags;
1326
1327 spin_lock_irqsave(&ar->lock, flags);
1328
575b5f34 1329 set_bit(WLAN_ENABLED, &ar->flag);
bdcd8170
KV		 1330
1331 if (test_bit(CONNECTED, &ar->flag)) {
1332 netif_carrier_on(dev);
1333 netif_wake_queue(dev);
1334 } else
1335 netif_carrier_off(dev);
1336
1337 spin_unlock_irqrestore(&ar->lock, flags);
1338
1339 return 0;
1340}
1341
1342static int ath6kl_close(struct net_device *dev)
1343{
1344 struct ath6kl *ar = ath6kl_priv(dev);
1345
1346 netif_stop_queue(dev);
1347
1348 ath6kl_disconnect(ar);
1349
1350 if (test_bit(WMI_READY, &ar->flag)) {
1351 if (ath6kl_wmi_scanparams_cmd(ar->wmi, 0xFFFF, 0, 0, 0, 0, 0, 0,
1352 0, 0, 0))
1353 return -EIO;
1354
575b5f34 1355 clear_bit(WLAN_ENABLED, &ar->flag);
bdcd8170
KV		 1356 }
1357
1358 ath6kl_cfg80211_scan_complete_event(ar, -ECANCELED);
1359
1360 return 0;
1361}
1362
1363static struct net_device_stats *ath6kl_get_stats(struct net_device *dev)
1364{
1365 struct ath6kl *ar = ath6kl_priv(dev);
1366
1367 return &ar->net_stats;
1368}
1369
1370static struct net_device_ops ath6kl_netdev_ops = {
1371 .ndo_open = ath6kl_open,
1372 .ndo_stop = ath6kl_close,
1373 .ndo_start_xmit = ath6kl_data_tx,
1374 .ndo_get_stats = ath6kl_get_stats,
1375};
1376
1377void init_netdev(struct net_device *dev)
1378{
1379 dev->netdev_ops = &ath6kl_netdev_ops;
1380 dev->watchdog_timeo = ATH6KL_TX_TIMEOUT;
1381
1382 dev->needed_headroom = ETH_HLEN;
1383 dev->needed_headroom += sizeof(struct ath6kl_llc_snap_hdr) +
1384 sizeof(struct wmi_data_hdr) + HTC_HDR_LENGTH
1df94a85 1385 + WMI_MAX_TX_META_SZ + ATH6KL_HTC_ALIGN_BYTES;
bdcd8170
KV		 1386
1387 return;
1388}
Linux kernel - Deliverables
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