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ath6kl: Move ssid and crypto information to vif structure
[deliverable/linux.git] / drivers / net / wireless / ath / ath6kl / main.c
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
23 struct 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
40 struct 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
54 static 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 if (ielen <= ATH6KL_MAX_IE)
65 memcpy(sta->wpa_ie, wpaie, ielen);
66 sta->aid = aid;
67 sta->keymgmt = keymgmt;
68 sta->ucipher = ucipher;
69 sta->auth = auth;
70
71 ar->sta_list_index = ar->sta_list_index | (1 << free_slot);
72 ar->ap_stats.sta[free_slot].aid = cpu_to_le32(aid);
73 }
74
75 static void ath6kl_sta_cleanup(struct ath6kl *ar, u8 i)
76 {
77 struct ath6kl_sta *sta = &ar->sta_list[i];
78
79 /* empty the queued pkts in the PS queue if any */
80 spin_lock_bh(&sta->psq_lock);
81 skb_queue_purge(&sta->psq);
82 spin_unlock_bh(&sta->psq_lock);
83
84 memset(&ar->ap_stats.sta[sta->aid - 1], 0,
85 sizeof(struct wmi_per_sta_stat));
86 memset(sta->mac, 0, ETH_ALEN);
87 memset(sta->wpa_ie, 0, ATH6KL_MAX_IE);
88 sta->aid = 0;
89 sta->sta_flags = 0;
90
91 ar->sta_list_index = ar->sta_list_index & ~(1 << i);
92
93 }
94
95 static u8 ath6kl_remove_sta(struct ath6kl *ar, u8 *mac, u16 reason)
96 {
97 u8 i, removed = 0;
98
99 if (is_zero_ether_addr(mac))
100 return removed;
101
102 if (is_broadcast_ether_addr(mac)) {
103 ath6kl_dbg(ATH6KL_DBG_TRC, "deleting all station\n");
104
105 for (i = 0; i < AP_MAX_NUM_STA; i++) {
106 if (!is_zero_ether_addr(ar->sta_list[i].mac)) {
107 ath6kl_sta_cleanup(ar, i);
108 removed = 1;
109 }
110 }
111 } else {
112 for (i = 0; i < AP_MAX_NUM_STA; i++) {
113 if (memcmp(ar->sta_list[i].mac, mac, ETH_ALEN) == 0) {
114 ath6kl_dbg(ATH6KL_DBG_TRC,
115 "deleting station %pM aid=%d reason=%d\n",
116 mac, ar->sta_list[i].aid, reason);
117 ath6kl_sta_cleanup(ar, i);
118 removed = 1;
119 break;
120 }
121 }
122 }
123
124 return removed;
125 }
126
127 enum htc_endpoint_id ath6kl_ac2_endpoint_id(void *devt, u8 ac)
128 {
129 struct ath6kl *ar = devt;
130 return ar->ac2ep_map[ac];
131 }
132
133 struct ath6kl_cookie *ath6kl_alloc_cookie(struct ath6kl *ar)
134 {
135 struct ath6kl_cookie *cookie;
136
137 cookie = ar->cookie_list;
138 if (cookie != NULL) {
139 ar->cookie_list = cookie->arc_list_next;
140 ar->cookie_count--;
141 }
142
143 return cookie;
144 }
145
146 void ath6kl_cookie_init(struct ath6kl *ar)
147 {
148 u32 i;
149
150 ar->cookie_list = NULL;
151 ar->cookie_count = 0;
152
153 memset(ar->cookie_mem, 0, sizeof(ar->cookie_mem));
154
155 for (i = 0; i < MAX_COOKIE_NUM; i++)
156 ath6kl_free_cookie(ar, &ar->cookie_mem[i]);
157 }
158
159 void ath6kl_cookie_cleanup(struct ath6kl *ar)
160 {
161 ar->cookie_list = NULL;
162 ar->cookie_count = 0;
163 }
164
165 void ath6kl_free_cookie(struct ath6kl *ar, struct ath6kl_cookie *cookie)
166 {
167 /* Insert first */
168
169 if (!ar || !cookie)
170 return;
171
172 cookie->arc_list_next = ar->cookie_list;
173 ar->cookie_list = cookie;
174 ar->cookie_count++;
175 }
176
177 /* set the window address register (using 4-byte register access ). */
178 static int ath6kl_set_addrwin_reg(struct ath6kl *ar, u32 reg_addr, u32 addr)
179 {
180 int status;
181 s32 i;
182 __le32 addr_val;
183
184 /*
185 * Write bytes 1,2,3 of the register to set the upper address bytes,
186 * the LSB is written last to initiate the access cycle
187 */
188
189 for (i = 1; i <= 3; i++) {
190 /*
191 * Fill the buffer with the address byte value we want to
192 * hit 4 times. No need to worry about endianness as the
193 * same byte is copied to all four bytes of addr_val at
194 * any time.
195 */
196 memset((u8 *)&addr_val, ((u8 *)&addr)[i], 4);
197
198 /*
199 * Hit each byte of the register address with a 4-byte
200 * write operation to the same address, this is a harmless
201 * operation.
202 */
203 status = hif_read_write_sync(ar, reg_addr + i, (u8 *)&addr_val,
204 4, HIF_WR_SYNC_BYTE_FIX);
205 if (status)
206 break;
207 }
208
209 if (status) {
210 ath6kl_err("failed to write initial bytes of 0x%x to window reg: 0x%X\n",
211 addr, reg_addr);
212 return status;
213 }
214
215 /*
216 * Write the address register again, this time write the whole
217 * 4-byte value. The effect here is that the LSB write causes the
218 * cycle to start, the extra 3 byte write to bytes 1,2,3 has no
219 * effect since we are writing the same values again
220 */
221 addr_val = cpu_to_le32(addr);
222 status = hif_read_write_sync(ar, reg_addr,
223 (u8 *)&(addr_val),
224 4, HIF_WR_SYNC_BYTE_INC);
225
226 if (status) {
227 ath6kl_err("failed to write 0x%x to window reg: 0x%X\n",
228 addr, reg_addr);
229 return status;
230 }
231
232 return 0;
233 }
234
235 /*
236 * Read from the hardware through its diagnostic window. No cooperation
237 * from the firmware is required for this.
238 */
239 int ath6kl_diag_read32(struct ath6kl *ar, u32 address, u32 *value)
240 {
241 int ret;
242
243 /* set window register to start read cycle */
244 ret = ath6kl_set_addrwin_reg(ar, WINDOW_READ_ADDR_ADDRESS, address);
245 if (ret)
246 return ret;
247
248 /* read the data */
249 ret = hif_read_write_sync(ar, WINDOW_DATA_ADDRESS, (u8 *) value,
250 sizeof(*value), HIF_RD_SYNC_BYTE_INC);
251 if (ret) {
252 ath6kl_warn("failed to read32 through diagnose window: %d\n",
253 ret);
254 return ret;
255 }
256
257 return 0;
258 }
259
260 /*
261 * Write to the ATH6KL through its diagnostic window. No cooperation from
262 * the Target is required for this.
263 */
264 int ath6kl_diag_write32(struct ath6kl *ar, u32 address, __le32 value)
265 {
266 int ret;
267
268 /* set write data */
269 ret = hif_read_write_sync(ar, WINDOW_DATA_ADDRESS, (u8 *) &value,
270 sizeof(value), HIF_WR_SYNC_BYTE_INC);
271 if (ret) {
272 ath6kl_err("failed to write 0x%x during diagnose window to 0x%d\n",
273 address, value);
274 return ret;
275 }
276
277 /* set window register, which starts the write cycle */
278 return ath6kl_set_addrwin_reg(ar, WINDOW_WRITE_ADDR_ADDRESS,
279 address);
280 }
281
282 int ath6kl_diag_read(struct ath6kl *ar, u32 address, void *data, u32 length)
283 {
284 u32 count, *buf = data;
285 int ret;
286
287 if (WARN_ON(length % 4))
288 return -EINVAL;
289
290 for (count = 0; count < length / 4; count++, address += 4) {
291 ret = ath6kl_diag_read32(ar, address, &buf[count]);
292 if (ret)
293 return ret;
294 }
295
296 return 0;
297 }
298
299 int ath6kl_diag_write(struct ath6kl *ar, u32 address, void *data, u32 length)
300 {
301 u32 count;
302 __le32 *buf = data;
303 int ret;
304
305 if (WARN_ON(length % 4))
306 return -EINVAL;
307
308 for (count = 0; count < length / 4; count++, address += 4) {
309 ret = ath6kl_diag_write32(ar, address, buf[count]);
310 if (ret)
311 return ret;
312 }
313
314 return 0;
315 }
316
317 int ath6kl_read_fwlogs(struct ath6kl *ar)
318 {
319 struct ath6kl_dbglog_hdr debug_hdr;
320 struct ath6kl_dbglog_buf debug_buf;
321 u32 address, length, dropped, firstbuf, debug_hdr_addr;
322 int ret = 0, loop;
323 u8 *buf;
324
325 buf = kmalloc(ATH6KL_FWLOG_PAYLOAD_SIZE, GFP_KERNEL);
326 if (!buf)
327 return -ENOMEM;
328
329 address = TARG_VTOP(ar->target_type,
330 ath6kl_get_hi_item_addr(ar,
331 HI_ITEM(hi_dbglog_hdr)));
332
333 ret = ath6kl_diag_read32(ar, address, &debug_hdr_addr);
334 if (ret)
335 goto out;
336
337 /* Get the contents of the ring buffer */
338 if (debug_hdr_addr == 0) {
339 ath6kl_warn("Invalid address for debug_hdr_addr\n");
340 ret = -EINVAL;
341 goto out;
342 }
343
344 address = TARG_VTOP(ar->target_type, debug_hdr_addr);
345 ath6kl_diag_read(ar, address, &debug_hdr, sizeof(debug_hdr));
346
347 address = TARG_VTOP(ar->target_type,
348 le32_to_cpu(debug_hdr.dbuf_addr));
349 firstbuf = address;
350 dropped = le32_to_cpu(debug_hdr.dropped);
351 ath6kl_diag_read(ar, address, &debug_buf, sizeof(debug_buf));
352
353 loop = 100;
354
355 do {
356 address = TARG_VTOP(ar->target_type,
357 le32_to_cpu(debug_buf.buffer_addr));
358 length = le32_to_cpu(debug_buf.length);
359
360 if (length != 0 && (le32_to_cpu(debug_buf.length) <=
361 le32_to_cpu(debug_buf.bufsize))) {
362 length = ALIGN(length, 4);
363
364 ret = ath6kl_diag_read(ar, address,
365 buf, length);
366 if (ret)
367 goto out;
368
369 ath6kl_debug_fwlog_event(ar, buf, length);
370 }
371
372 address = TARG_VTOP(ar->target_type,
373 le32_to_cpu(debug_buf.next));
374 ath6kl_diag_read(ar, address, &debug_buf, sizeof(debug_buf));
375 if (ret)
376 goto out;
377
378 loop--;
379
380 if (WARN_ON(loop == 0)) {
381 ret = -ETIMEDOUT;
382 goto out;
383 }
384 } while (address != firstbuf);
385
386 out:
387 kfree(buf);
388
389 return ret;
390 }
391
392 /* FIXME: move to a better place, target.h? */
393 #define AR6003_RESET_CONTROL_ADDRESS 0x00004000
394 #define AR6004_RESET_CONTROL_ADDRESS 0x00004000
395
396 static void ath6kl_reset_device(struct ath6kl *ar, u32 target_type,
397 bool wait_fot_compltn, bool cold_reset)
398 {
399 int status = 0;
400 u32 address;
401 __le32 data;
402
403 if (target_type != TARGET_TYPE_AR6003 &&
404 target_type != TARGET_TYPE_AR6004)
405 return;
406
407 data = cold_reset ? cpu_to_le32(RESET_CONTROL_COLD_RST) :
408 cpu_to_le32(RESET_CONTROL_MBOX_RST);
409
410 switch (target_type) {
411 case TARGET_TYPE_AR6003:
412 address = AR6003_RESET_CONTROL_ADDRESS;
413 break;
414 case TARGET_TYPE_AR6004:
415 address = AR6004_RESET_CONTROL_ADDRESS;
416 break;
417 default:
418 address = AR6003_RESET_CONTROL_ADDRESS;
419 break;
420 }
421
422 status = ath6kl_diag_write32(ar, address, data);
423
424 if (status)
425 ath6kl_err("failed to reset target\n");
426 }
427
428 void ath6kl_stop_endpoint(struct net_device *dev, bool keep_profile,
429 bool get_dbglogs)
430 {
431 struct ath6kl *ar = ath6kl_priv(dev);
432 struct ath6kl_vif *vif = netdev_priv(dev);
433 static u8 bcast_mac[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
434 bool discon_issued;
435
436 netif_stop_queue(dev);
437
438 /* disable the target and the interrupts associated with it */
439 if (test_bit(WMI_READY, &ar->flag)) {
440 discon_issued = (test_bit(CONNECTED, &vif->flags) ||
441 test_bit(CONNECT_PEND, &vif->flags));
442 ath6kl_disconnect(ar);
443 if (!keep_profile)
444 ath6kl_init_profile_info(ar);
445
446 del_timer(&ar->disconnect_timer);
447
448 clear_bit(WMI_READY, &ar->flag);
449 ath6kl_wmi_shutdown(ar->wmi);
450 clear_bit(WMI_ENABLED, &ar->flag);
451 ar->wmi = NULL;
452
453 /*
454 * After wmi_shudown all WMI events will be dropped. We
455 * need to cleanup the buffers allocated in AP mode and
456 * give disconnect notification to stack, which usually
457 * happens in the disconnect_event. Simulate the disconnect
458 * event by calling the function directly. Sometimes
459 * disconnect_event will be received when the debug logs
460 * are collected.
461 */
462 if (discon_issued)
463 ath6kl_disconnect_event(ar, DISCONNECT_CMD,
464 (ar->nw_type & AP_NETWORK) ?
465 bcast_mac : ar->bssid,
466 0, NULL, 0);
467
468 ar->user_key_ctrl = 0;
469
470 } else {
471 ath6kl_dbg(ATH6KL_DBG_TRC,
472 "%s: wmi is not ready 0x%p 0x%p\n",
473 __func__, ar, ar->wmi);
474
475 /* Shut down WMI if we have started it */
476 if (test_bit(WMI_ENABLED, &ar->flag)) {
477 ath6kl_dbg(ATH6KL_DBG_TRC,
478 "%s: shut down wmi\n", __func__);
479 ath6kl_wmi_shutdown(ar->wmi);
480 clear_bit(WMI_ENABLED, &ar->flag);
481 ar->wmi = NULL;
482 }
483 }
484
485 if (ar->htc_target) {
486 ath6kl_dbg(ATH6KL_DBG_TRC, "%s: shut down htc\n", __func__);
487 ath6kl_htc_stop(ar->htc_target);
488 }
489
490 /*
491 * Try to reset the device if we can. The driver may have been
492 * configure NOT to reset the target during a debug session.
493 */
494 ath6kl_dbg(ATH6KL_DBG_TRC,
495 "attempting to reset target on instance destroy\n");
496 ath6kl_reset_device(ar, ar->target_type, true, true);
497 }
498
499 static void ath6kl_install_static_wep_keys(struct ath6kl *ar)
500 {
501 /* TODO: Findout vif */
502 struct ath6kl_vif *vif = ar->vif;
503 u8 index;
504 u8 keyusage;
505
506 for (index = WMI_MIN_KEY_INDEX; index <= WMI_MAX_KEY_INDEX; index++) {
507 if (ar->wep_key_list[index].key_len) {
508 keyusage = GROUP_USAGE;
509 if (index == vif->def_txkey_index)
510 keyusage |= TX_USAGE;
511
512 ath6kl_wmi_addkey_cmd(ar->wmi,
513 index,
514 WEP_CRYPT,
515 keyusage,
516 ar->wep_key_list[index].key_len,
517 NULL,
518 ar->wep_key_list[index].key,
519 KEY_OP_INIT_VAL, NULL,
520 NO_SYNC_WMIFLAG);
521 }
522 }
523 }
524
525 void ath6kl_connect_ap_mode_bss(struct ath6kl *ar, u16 channel)
526 {
527 struct ath6kl_req_key *ik;
528 int res;
529 u8 key_rsc[ATH6KL_KEY_SEQ_LEN];
530 /* TODO: Pass vif instead of taking it from ar */
531 struct ath6kl_vif *vif = ar->vif;
532
533 ik = &ar->ap_mode_bkey;
534
535 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "AP mode started on %u MHz\n", channel);
536
537 switch (vif->auth_mode) {
538 case NONE_AUTH:
539 if (vif->prwise_crypto == WEP_CRYPT)
540 ath6kl_install_static_wep_keys(ar);
541 break;
542 case WPA_PSK_AUTH:
543 case WPA2_PSK_AUTH:
544 case (WPA_PSK_AUTH | WPA2_PSK_AUTH):
545 if (!ik->valid)
546 break;
547
548 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "Delayed addkey for "
549 "the initial group key for AP mode\n");
550 memset(key_rsc, 0, sizeof(key_rsc));
551 res = ath6kl_wmi_addkey_cmd(
552 ar->wmi, ik->key_index, ik->key_type,
553 GROUP_USAGE, ik->key_len, key_rsc, ik->key,
554 KEY_OP_INIT_VAL, NULL, SYNC_BOTH_WMIFLAG);
555 if (res) {
556 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "Delayed "
557 "addkey failed: %d\n", res);
558 }
559 break;
560 }
561
562 ath6kl_wmi_bssfilter_cmd(ar->wmi, NONE_BSS_FILTER, 0);
563 set_bit(CONNECTED, &vif->flags);
564 netif_carrier_on(ar->net_dev);
565 }
566
567 void ath6kl_connect_ap_mode_sta(struct ath6kl *ar, u16 aid, u8 *mac_addr,
568 u8 keymgmt, u8 ucipher, u8 auth,
569 u8 assoc_req_len, u8 *assoc_info)
570 {
571 u8 *ies = NULL, *wpa_ie = NULL, *pos;
572 size_t ies_len = 0;
573 struct station_info sinfo;
574
575 ath6kl_dbg(ATH6KL_DBG_TRC, "new station %pM aid=%d\n", mac_addr, aid);
576
577 if (assoc_req_len > sizeof(struct ieee80211_hdr_3addr)) {
578 struct ieee80211_mgmt *mgmt =
579 (struct ieee80211_mgmt *) assoc_info;
580 if (ieee80211_is_assoc_req(mgmt->frame_control) &&
581 assoc_req_len >= sizeof(struct ieee80211_hdr_3addr) +
582 sizeof(mgmt->u.assoc_req)) {
583 ies = mgmt->u.assoc_req.variable;
584 ies_len = assoc_info + assoc_req_len - ies;
585 } else if (ieee80211_is_reassoc_req(mgmt->frame_control) &&
586 assoc_req_len >= sizeof(struct ieee80211_hdr_3addr)
587 + sizeof(mgmt->u.reassoc_req)) {
588 ies = mgmt->u.reassoc_req.variable;
589 ies_len = assoc_info + assoc_req_len - ies;
590 }
591 }
592
593 pos = ies;
594 while (pos && pos + 1 < ies + ies_len) {
595 if (pos + 2 + pos[1] > ies + ies_len)
596 break;
597 if (pos[0] == WLAN_EID_RSN)
598 wpa_ie = pos; /* RSN IE */
599 else if (pos[0] == WLAN_EID_VENDOR_SPECIFIC &&
600 pos[1] >= 4 &&
601 pos[2] == 0x00 && pos[3] == 0x50 && pos[4] == 0xf2) {
602 if (pos[5] == 0x01)
603 wpa_ie = pos; /* WPA IE */
604 else if (pos[5] == 0x04) {
605 wpa_ie = pos; /* WPS IE */
606 break; /* overrides WPA/RSN IE */
607 }
608 }
609 pos += 2 + pos[1];
610 }
611
612 ath6kl_add_new_sta(ar, mac_addr, aid, wpa_ie,
613 wpa_ie ? 2 + wpa_ie[1] : 0,
614 keymgmt, ucipher, auth);
615
616 /* send event to application */
617 memset(&sinfo, 0, sizeof(sinfo));
618
619 /* TODO: sinfo.generation */
620
621 sinfo.assoc_req_ies = ies;
622 sinfo.assoc_req_ies_len = ies_len;
623 sinfo.filled |= STATION_INFO_ASSOC_REQ_IES;
624
625 cfg80211_new_sta(ar->net_dev, mac_addr, &sinfo, GFP_KERNEL);
626
627 netif_wake_queue(ar->net_dev);
628 }
629
630 /* Functions for Tx credit handling */
631 void ath6k_credit_init(struct htc_credit_state_info *cred_info,
632 struct list_head *ep_list,
633 int tot_credits)
634 {
635 struct htc_endpoint_credit_dist *cur_ep_dist;
636 int count;
637
638 cred_info->cur_free_credits = tot_credits;
639 cred_info->total_avail_credits = tot_credits;
640
641 list_for_each_entry(cur_ep_dist, ep_list, list) {
642 if (cur_ep_dist->endpoint == ENDPOINT_0)
643 continue;
644
645 cur_ep_dist->cred_min = cur_ep_dist->cred_per_msg;
646
647 if (tot_credits > 4)
648 if ((cur_ep_dist->svc_id == WMI_DATA_BK_SVC) ||
649 (cur_ep_dist->svc_id == WMI_DATA_BE_SVC)) {
650 ath6kl_deposit_credit_to_ep(cred_info,
651 cur_ep_dist,
652 cur_ep_dist->cred_min);
653 cur_ep_dist->dist_flags |= HTC_EP_ACTIVE;
654 }
655
656 if (cur_ep_dist->svc_id == WMI_CONTROL_SVC) {
657 ath6kl_deposit_credit_to_ep(cred_info, cur_ep_dist,
658 cur_ep_dist->cred_min);
659 /*
660 * Control service is always marked active, it
661 * never goes inactive EVER.
662 */
663 cur_ep_dist->dist_flags |= HTC_EP_ACTIVE;
664 } else if (cur_ep_dist->svc_id == WMI_DATA_BK_SVC)
665 /* this is the lowest priority data endpoint */
666 cred_info->lowestpri_ep_dist = cur_ep_dist->list;
667
668 /*
669 * Streams have to be created (explicit | implicit) for all
670 * kinds of traffic. BE endpoints are also inactive in the
671 * beginning. When BE traffic starts it creates implicit
672 * streams that redistributes credits.
673 *
674 * Note: all other endpoints have minimums set but are
675 * initially given NO credits. credits will be distributed
676 * as traffic activity demands
677 */
678 }
679
680 WARN_ON(cred_info->cur_free_credits <= 0);
681
682 list_for_each_entry(cur_ep_dist, ep_list, list) {
683 if (cur_ep_dist->endpoint == ENDPOINT_0)
684 continue;
685
686 if (cur_ep_dist->svc_id == WMI_CONTROL_SVC)
687 cur_ep_dist->cred_norm = cur_ep_dist->cred_per_msg;
688 else {
689 /*
690 * For the remaining data endpoints, we assume that
691 * each cred_per_msg are the same. We use a simple
692 * calculation here, we take the remaining credits
693 * and determine how many max messages this can
694 * cover and then set each endpoint's normal value
695 * equal to 3/4 this amount.
696 */
697 count = (cred_info->cur_free_credits /
698 cur_ep_dist->cred_per_msg)
699 * cur_ep_dist->cred_per_msg;
700 count = (count * 3) >> 2;
701 count = max(count, cur_ep_dist->cred_per_msg);
702 cur_ep_dist->cred_norm = count;
703
704 }
705 }
706 }
707
708 /* initialize and setup credit distribution */
709 int ath6k_setup_credit_dist(void *htc_handle,
710 struct htc_credit_state_info *cred_info)
711 {
712 u16 servicepriority[5];
713
714 memset(cred_info, 0, sizeof(struct htc_credit_state_info));
715
716 servicepriority[0] = WMI_CONTROL_SVC; /* highest */
717 servicepriority[1] = WMI_DATA_VO_SVC;
718 servicepriority[2] = WMI_DATA_VI_SVC;
719 servicepriority[3] = WMI_DATA_BE_SVC;
720 servicepriority[4] = WMI_DATA_BK_SVC; /* lowest */
721
722 /* set priority list */
723 ath6kl_htc_set_credit_dist(htc_handle, cred_info, servicepriority, 5);
724
725 return 0;
726 }
727
728 /* reduce an ep's credits back to a set limit */
729 static void ath6k_reduce_credits(struct htc_credit_state_info *cred_info,
730 struct htc_endpoint_credit_dist *ep_dist,
731 int limit)
732 {
733 int credits;
734
735 ep_dist->cred_assngd = limit;
736
737 if (ep_dist->credits <= limit)
738 return;
739
740 credits = ep_dist->credits - limit;
741 ep_dist->credits -= credits;
742 cred_info->cur_free_credits += credits;
743 }
744
745 static void ath6k_credit_update(struct htc_credit_state_info *cred_info,
746 struct list_head *epdist_list)
747 {
748 struct htc_endpoint_credit_dist *cur_dist_list;
749
750 list_for_each_entry(cur_dist_list, epdist_list, list) {
751 if (cur_dist_list->endpoint == ENDPOINT_0)
752 continue;
753
754 if (cur_dist_list->cred_to_dist > 0) {
755 cur_dist_list->credits +=
756 cur_dist_list->cred_to_dist;
757 cur_dist_list->cred_to_dist = 0;
758 if (cur_dist_list->credits >
759 cur_dist_list->cred_assngd)
760 ath6k_reduce_credits(cred_info,
761 cur_dist_list,
762 cur_dist_list->cred_assngd);
763
764 if (cur_dist_list->credits >
765 cur_dist_list->cred_norm)
766 ath6k_reduce_credits(cred_info, cur_dist_list,
767 cur_dist_list->cred_norm);
768
769 if (!(cur_dist_list->dist_flags & HTC_EP_ACTIVE)) {
770 if (cur_dist_list->txq_depth == 0)
771 ath6k_reduce_credits(cred_info,
772 cur_dist_list, 0);
773 }
774 }
775 }
776 }
777
778 /*
779 * HTC has an endpoint that needs credits, ep_dist is the endpoint in
780 * question.
781 */
782 void ath6k_seek_credits(struct htc_credit_state_info *cred_info,
783 struct htc_endpoint_credit_dist *ep_dist)
784 {
785 struct htc_endpoint_credit_dist *curdist_list;
786 int credits = 0;
787 int need;
788
789 if (ep_dist->svc_id == WMI_CONTROL_SVC)
790 goto out;
791
792 if ((ep_dist->svc_id == WMI_DATA_VI_SVC) ||
793 (ep_dist->svc_id == WMI_DATA_VO_SVC))
794 if ((ep_dist->cred_assngd >= ep_dist->cred_norm))
795 goto out;
796
797 /*
798 * For all other services, we follow a simple algorithm of:
799 *
800 * 1. checking the free pool for credits
801 * 2. checking lower priority endpoints for credits to take
802 */
803
804 credits = min(cred_info->cur_free_credits, ep_dist->seek_cred);
805
806 if (credits >= ep_dist->seek_cred)
807 goto out;
808
809 /*
810 * We don't have enough in the free pool, try taking away from
811 * lower priority services The rule for taking away credits:
812 *
813 * 1. Only take from lower priority endpoints
814 * 2. Only take what is allocated above the minimum (never
815 * starve an endpoint completely)
816 * 3. Only take what you need.
817 */
818
819 list_for_each_entry_reverse(curdist_list,
820 &cred_info->lowestpri_ep_dist,
821 list) {
822 if (curdist_list == ep_dist)
823 break;
824
825 need = ep_dist->seek_cred - cred_info->cur_free_credits;
826
827 if ((curdist_list->cred_assngd - need) >=
828 curdist_list->cred_min) {
829 /*
830 * The current one has been allocated more than
831 * it's minimum and it has enough credits assigned
832 * above it's minimum to fulfill our need try to
833 * take away just enough to fulfill our need.
834 */
835 ath6k_reduce_credits(cred_info, curdist_list,
836 curdist_list->cred_assngd - need);
837
838 if (cred_info->cur_free_credits >=
839 ep_dist->seek_cred)
840 break;
841 }
842
843 if (curdist_list->endpoint == ENDPOINT_0)
844 break;
845 }
846
847 credits = min(cred_info->cur_free_credits, ep_dist->seek_cred);
848
849 out:
850 /* did we find some credits? */
851 if (credits)
852 ath6kl_deposit_credit_to_ep(cred_info, ep_dist, credits);
853
854 ep_dist->seek_cred = 0;
855 }
856
857 /* redistribute credits based on activity change */
858 static void ath6k_redistribute_credits(struct htc_credit_state_info *info,
859 struct list_head *ep_dist_list)
860 {
861 struct htc_endpoint_credit_dist *curdist_list;
862
863 list_for_each_entry(curdist_list, ep_dist_list, list) {
864 if (curdist_list->endpoint == ENDPOINT_0)
865 continue;
866
867 if ((curdist_list->svc_id == WMI_DATA_BK_SVC) ||
868 (curdist_list->svc_id == WMI_DATA_BE_SVC))
869 curdist_list->dist_flags |= HTC_EP_ACTIVE;
870
871 if ((curdist_list->svc_id != WMI_CONTROL_SVC) &&
872 !(curdist_list->dist_flags & HTC_EP_ACTIVE)) {
873 if (curdist_list->txq_depth == 0)
874 ath6k_reduce_credits(info,
875 curdist_list, 0);
876 else
877 ath6k_reduce_credits(info,
878 curdist_list,
879 curdist_list->cred_min);
880 }
881 }
882 }
883
884 /*
885 *
886 * This function is invoked whenever endpoints require credit
887 * distributions. A lock is held while this function is invoked, this
888 * function shall NOT block. The ep_dist_list is a list of distribution
889 * structures in prioritized order as defined by the call to the
890 * htc_set_credit_dist() api.
891 */
892 void ath6k_credit_distribute(struct htc_credit_state_info *cred_info,
893 struct list_head *ep_dist_list,
894 enum htc_credit_dist_reason reason)
895 {
896 switch (reason) {
897 case HTC_CREDIT_DIST_SEND_COMPLETE:
898 ath6k_credit_update(cred_info, ep_dist_list);
899 break;
900 case HTC_CREDIT_DIST_ACTIVITY_CHANGE:
901 ath6k_redistribute_credits(cred_info, ep_dist_list);
902 break;
903 default:
904 break;
905 }
906
907 WARN_ON(cred_info->cur_free_credits > cred_info->total_avail_credits);
908 WARN_ON(cred_info->cur_free_credits < 0);
909 }
910
911 void disconnect_timer_handler(unsigned long ptr)
912 {
913 struct net_device *dev = (struct net_device *)ptr;
914 struct ath6kl *ar = ath6kl_priv(dev);
915
916 ath6kl_init_profile_info(ar);
917 ath6kl_disconnect(ar);
918 }
919
920 void ath6kl_disconnect(struct ath6kl *ar)
921 {
922 /* TODO: Pass vif instead of taking it from ar */
923 struct ath6kl_vif *vif = ar->vif;
924
925 if (test_bit(CONNECTED, &vif->flags) ||
926 test_bit(CONNECT_PEND, &vif->flags)) {
927 ath6kl_wmi_disconnect_cmd(ar->wmi);
928 /*
929 * Disconnect command is issued, clear the connect pending
930 * flag. The connected flag will be cleared in
931 * disconnect event notification.
932 */
933 clear_bit(CONNECT_PEND, &vif->flags);
934 }
935 }
936
937 void ath6kl_deep_sleep_enable(struct ath6kl *ar)
938 {
939 /* TODO: Pass vif instead of taking it from ar */
940 struct ath6kl_vif *vif = ar->vif;
941
942 switch (ar->sme_state) {
943 case SME_CONNECTING:
944 cfg80211_connect_result(ar->net_dev, ar->bssid, NULL, 0,
945 NULL, 0,
946 WLAN_STATUS_UNSPECIFIED_FAILURE,
947 GFP_KERNEL);
948 break;
949 case SME_CONNECTED:
950 default:
951 /*
952 * FIXME: oddly enough smeState is in DISCONNECTED during
953 * suspend, why? Need to send disconnected event in that
954 * state.
955 */
956 cfg80211_disconnected(ar->net_dev, 0, NULL, 0, GFP_KERNEL);
957 break;
958 }
959
960 if (test_bit(CONNECTED, &vif->flags) ||
961 test_bit(CONNECT_PEND, &vif->flags))
962 ath6kl_wmi_disconnect_cmd(ar->wmi);
963
964 ar->sme_state = SME_DISCONNECTED;
965
966 /* disable scanning */
967 if (ath6kl_wmi_scanparams_cmd(ar->wmi, 0xFFFF, 0, 0, 0, 0, 0, 0, 0,
968 0, 0) != 0)
969 printk(KERN_WARNING "ath6kl: failed to disable scan "
970 "during suspend\n");
971
972 ath6kl_cfg80211_scan_complete_event(ar, -ECANCELED);
973
974 /* save the current power mode before enabling power save */
975 ar->wmi->saved_pwr_mode = ar->wmi->pwr_mode;
976
977 if (ath6kl_wmi_powermode_cmd(ar->wmi, REC_POWER) != 0)
978 ath6kl_warn("ath6kl_deep_sleep_enable: "
979 "wmi_powermode_cmd failed\n");
980 }
981
982 /* WMI Event handlers */
983
984 static const char *get_hw_id_string(u32 id)
985 {
986 switch (id) {
987 case AR6003_REV1_VERSION:
988 return "1.0";
989 case AR6003_REV2_VERSION:
990 return "2.0";
991 case AR6003_REV3_VERSION:
992 return "2.1.1";
993 default:
994 return "unknown";
995 }
996 }
997
998 void ath6kl_ready_event(void *devt, u8 *datap, u32 sw_ver, u32 abi_ver)
999 {
1000 struct ath6kl *ar = devt;
1001 struct net_device *dev = ar->net_dev;
1002
1003 memcpy(dev->dev_addr, datap, ETH_ALEN);
1004 ath6kl_dbg(ATH6KL_DBG_TRC, "%s: mac addr = %pM\n",
1005 __func__, dev->dev_addr);
1006
1007 ar->version.wlan_ver = sw_ver;
1008 ar->version.abi_ver = abi_ver;
1009
1010 snprintf(ar->wiphy->fw_version,
1011 sizeof(ar->wiphy->fw_version),
1012 "%u.%u.%u.%u",
1013 (ar->version.wlan_ver & 0xf0000000) >> 28,
1014 (ar->version.wlan_ver & 0x0f000000) >> 24,
1015 (ar->version.wlan_ver & 0x00ff0000) >> 16,
1016 (ar->version.wlan_ver & 0x0000ffff));
1017
1018 /* indicate to the waiting thread that the ready event was received */
1019 set_bit(WMI_READY, &ar->flag);
1020 wake_up(&ar->event_wq);
1021
1022 ath6kl_info("hw %s fw %s%s\n",
1023 get_hw_id_string(ar->wiphy->hw_version),
1024 ar->wiphy->fw_version,
1025 test_bit(TESTMODE, &ar->flag) ? " testmode" : "");
1026 }
1027
1028 void ath6kl_scan_complete_evt(struct ath6kl *ar, int status)
1029 {
1030 /* TODO: Pass vif instead of taking it from ar */
1031 struct ath6kl_vif *vif = ar->vif;
1032
1033 ath6kl_cfg80211_scan_complete_event(ar, status);
1034
1035 if (!ar->usr_bss_filter) {
1036 clear_bit(CLEAR_BSSFILTER_ON_BEACON, &vif->flags);
1037 ath6kl_wmi_bssfilter_cmd(ar->wmi, NONE_BSS_FILTER, 0);
1038 }
1039
1040 ath6kl_dbg(ATH6KL_DBG_WLAN_SCAN, "scan complete: %d\n", status);
1041 }
1042
1043 void ath6kl_connect_event(struct ath6kl *ar, u16 channel, u8 *bssid,
1044 u16 listen_int, u16 beacon_int,
1045 enum network_type net_type, u8 beacon_ie_len,
1046 u8 assoc_req_len, u8 assoc_resp_len,
1047 u8 *assoc_info)
1048 {
1049 /* TODO: findout vif instead of taking it from ar */
1050 struct ath6kl_vif *vif = ar->vif;
1051
1052 ath6kl_cfg80211_connect_event(ar, channel, bssid,
1053 listen_int, beacon_int,
1054 net_type, beacon_ie_len,
1055 assoc_req_len, assoc_resp_len,
1056 assoc_info);
1057
1058 memcpy(ar->bssid, bssid, sizeof(ar->bssid));
1059 ar->bss_ch = channel;
1060
1061 if ((ar->nw_type == INFRA_NETWORK))
1062 ath6kl_wmi_listeninterval_cmd(ar->wmi, ar->listen_intvl_t,
1063 ar->listen_intvl_b);
1064
1065 netif_wake_queue(ar->net_dev);
1066
1067 /* Update connect & link status atomically */
1068 spin_lock_bh(&ar->lock);
1069 set_bit(CONNECTED, &vif->flags);
1070 clear_bit(CONNECT_PEND, &vif->flags);
1071 netif_carrier_on(ar->net_dev);
1072 spin_unlock_bh(&ar->lock);
1073
1074 aggr_reset_state(ar->aggr_cntxt);
1075 ar->reconnect_flag = 0;
1076
1077 if ((ar->nw_type == ADHOC_NETWORK) && ar->ibss_ps_enable) {
1078 memset(ar->node_map, 0, sizeof(ar->node_map));
1079 ar->node_num = 0;
1080 ar->next_ep_id = ENDPOINT_2;
1081 }
1082
1083 if (!ar->usr_bss_filter) {
1084 set_bit(CLEAR_BSSFILTER_ON_BEACON, &vif->flags);
1085 ath6kl_wmi_bssfilter_cmd(ar->wmi, CURRENT_BSS_FILTER, 0);
1086 }
1087 }
1088
1089 void ath6kl_tkip_micerr_event(struct ath6kl *ar, u8 keyid, bool ismcast)
1090 {
1091 struct ath6kl_sta *sta;
1092 u8 tsc[6];
1093 /*
1094 * For AP case, keyid will have aid of STA which sent pkt with
1095 * MIC error. Use this aid to get MAC & send it to hostapd.
1096 */
1097 if (ar->nw_type == AP_NETWORK) {
1098 sta = ath6kl_find_sta_by_aid(ar, (keyid >> 2));
1099 if (!sta)
1100 return;
1101
1102 ath6kl_dbg(ATH6KL_DBG_TRC,
1103 "ap tkip mic error received from aid=%d\n", keyid);
1104
1105 memset(tsc, 0, sizeof(tsc)); /* FIX: get correct TSC */
1106 cfg80211_michael_mic_failure(ar->net_dev, sta->mac,
1107 NL80211_KEYTYPE_PAIRWISE, keyid,
1108 tsc, GFP_KERNEL);
1109 } else
1110 ath6kl_cfg80211_tkip_micerr_event(ar, keyid, ismcast);
1111
1112 }
1113
1114 static void ath6kl_update_target_stats(struct ath6kl *ar, u8 *ptr, u32 len)
1115 {
1116 struct wmi_target_stats *tgt_stats =
1117 (struct wmi_target_stats *) ptr;
1118 struct target_stats *stats = &ar->target_stats;
1119 struct tkip_ccmp_stats *ccmp_stats;
1120 u8 ac;
1121
1122 if (len < sizeof(*tgt_stats))
1123 return;
1124
1125 ath6kl_dbg(ATH6KL_DBG_TRC, "updating target stats\n");
1126
1127 stats->tx_pkt += le32_to_cpu(tgt_stats->stats.tx.pkt);
1128 stats->tx_byte += le32_to_cpu(tgt_stats->stats.tx.byte);
1129 stats->tx_ucast_pkt += le32_to_cpu(tgt_stats->stats.tx.ucast_pkt);
1130 stats->tx_ucast_byte += le32_to_cpu(tgt_stats->stats.tx.ucast_byte);
1131 stats->tx_mcast_pkt += le32_to_cpu(tgt_stats->stats.tx.mcast_pkt);
1132 stats->tx_mcast_byte += le32_to_cpu(tgt_stats->stats.tx.mcast_byte);
1133 stats->tx_bcast_pkt += le32_to_cpu(tgt_stats->stats.tx.bcast_pkt);
1134 stats->tx_bcast_byte += le32_to_cpu(tgt_stats->stats.tx.bcast_byte);
1135 stats->tx_rts_success_cnt +=
1136 le32_to_cpu(tgt_stats->stats.tx.rts_success_cnt);
1137
1138 for (ac = 0; ac < WMM_NUM_AC; ac++)
1139 stats->tx_pkt_per_ac[ac] +=
1140 le32_to_cpu(tgt_stats->stats.tx.pkt_per_ac[ac]);
1141
1142 stats->tx_err += le32_to_cpu(tgt_stats->stats.tx.err);
1143 stats->tx_fail_cnt += le32_to_cpu(tgt_stats->stats.tx.fail_cnt);
1144 stats->tx_retry_cnt += le32_to_cpu(tgt_stats->stats.tx.retry_cnt);
1145 stats->tx_mult_retry_cnt +=
1146 le32_to_cpu(tgt_stats->stats.tx.mult_retry_cnt);
1147 stats->tx_rts_fail_cnt +=
1148 le32_to_cpu(tgt_stats->stats.tx.rts_fail_cnt);
1149 stats->tx_ucast_rate =
1150 ath6kl_wmi_get_rate(a_sle32_to_cpu(tgt_stats->stats.tx.ucast_rate));
1151
1152 stats->rx_pkt += le32_to_cpu(tgt_stats->stats.rx.pkt);
1153 stats->rx_byte += le32_to_cpu(tgt_stats->stats.rx.byte);
1154 stats->rx_ucast_pkt += le32_to_cpu(tgt_stats->stats.rx.ucast_pkt);
1155 stats->rx_ucast_byte += le32_to_cpu(tgt_stats->stats.rx.ucast_byte);
1156 stats->rx_mcast_pkt += le32_to_cpu(tgt_stats->stats.rx.mcast_pkt);
1157 stats->rx_mcast_byte += le32_to_cpu(tgt_stats->stats.rx.mcast_byte);
1158 stats->rx_bcast_pkt += le32_to_cpu(tgt_stats->stats.rx.bcast_pkt);
1159 stats->rx_bcast_byte += le32_to_cpu(tgt_stats->stats.rx.bcast_byte);
1160 stats->rx_frgment_pkt += le32_to_cpu(tgt_stats->stats.rx.frgment_pkt);
1161 stats->rx_err += le32_to_cpu(tgt_stats->stats.rx.err);
1162 stats->rx_crc_err += le32_to_cpu(tgt_stats->stats.rx.crc_err);
1163 stats->rx_key_cache_miss +=
1164 le32_to_cpu(tgt_stats->stats.rx.key_cache_miss);
1165 stats->rx_decrypt_err += le32_to_cpu(tgt_stats->stats.rx.decrypt_err);
1166 stats->rx_dupl_frame += le32_to_cpu(tgt_stats->stats.rx.dupl_frame);
1167 stats->rx_ucast_rate =
1168 ath6kl_wmi_get_rate(a_sle32_to_cpu(tgt_stats->stats.rx.ucast_rate));
1169
1170 ccmp_stats = &tgt_stats->stats.tkip_ccmp_stats;
1171
1172 stats->tkip_local_mic_fail +=
1173 le32_to_cpu(ccmp_stats->tkip_local_mic_fail);
1174 stats->tkip_cnter_measures_invoked +=
1175 le32_to_cpu(ccmp_stats->tkip_cnter_measures_invoked);
1176 stats->tkip_fmt_err += le32_to_cpu(ccmp_stats->tkip_fmt_err);
1177
1178 stats->ccmp_fmt_err += le32_to_cpu(ccmp_stats->ccmp_fmt_err);
1179 stats->ccmp_replays += le32_to_cpu(ccmp_stats->ccmp_replays);
1180
1181 stats->pwr_save_fail_cnt +=
1182 le32_to_cpu(tgt_stats->pm_stats.pwr_save_failure_cnt);
1183 stats->noise_floor_calib =
1184 a_sle32_to_cpu(tgt_stats->noise_floor_calib);
1185
1186 stats->cs_bmiss_cnt +=
1187 le32_to_cpu(tgt_stats->cserv_stats.cs_bmiss_cnt);
1188 stats->cs_low_rssi_cnt +=
1189 le32_to_cpu(tgt_stats->cserv_stats.cs_low_rssi_cnt);
1190 stats->cs_connect_cnt +=
1191 le16_to_cpu(tgt_stats->cserv_stats.cs_connect_cnt);
1192 stats->cs_discon_cnt +=
1193 le16_to_cpu(tgt_stats->cserv_stats.cs_discon_cnt);
1194
1195 stats->cs_ave_beacon_rssi =
1196 a_sle16_to_cpu(tgt_stats->cserv_stats.cs_ave_beacon_rssi);
1197
1198 stats->cs_last_roam_msec =
1199 tgt_stats->cserv_stats.cs_last_roam_msec;
1200 stats->cs_snr = tgt_stats->cserv_stats.cs_snr;
1201 stats->cs_rssi = a_sle16_to_cpu(tgt_stats->cserv_stats.cs_rssi);
1202
1203 stats->lq_val = le32_to_cpu(tgt_stats->lq_val);
1204
1205 stats->wow_pkt_dropped +=
1206 le32_to_cpu(tgt_stats->wow_stats.wow_pkt_dropped);
1207 stats->wow_host_pkt_wakeups +=
1208 tgt_stats->wow_stats.wow_host_pkt_wakeups;
1209 stats->wow_host_evt_wakeups +=
1210 tgt_stats->wow_stats.wow_host_evt_wakeups;
1211 stats->wow_evt_discarded +=
1212 le16_to_cpu(tgt_stats->wow_stats.wow_evt_discarded);
1213
1214 if (test_bit(STATS_UPDATE_PEND, &ar->flag)) {
1215 clear_bit(STATS_UPDATE_PEND, &ar->flag);
1216 wake_up(&ar->event_wq);
1217 }
1218 }
1219
1220 static void ath6kl_add_le32(__le32 *var, __le32 val)
1221 {
1222 *var = cpu_to_le32(le32_to_cpu(*var) + le32_to_cpu(val));
1223 }
1224
1225 void ath6kl_tgt_stats_event(struct ath6kl *ar, u8 *ptr, u32 len)
1226 {
1227 struct wmi_ap_mode_stat *p = (struct wmi_ap_mode_stat *) ptr;
1228 struct wmi_ap_mode_stat *ap = &ar->ap_stats;
1229 struct wmi_per_sta_stat *st_ap, *st_p;
1230 u8 ac;
1231
1232 if (ar->nw_type == AP_NETWORK) {
1233 if (len < sizeof(*p))
1234 return;
1235
1236 for (ac = 0; ac < AP_MAX_NUM_STA; ac++) {
1237 st_ap = &ap->sta[ac];
1238 st_p = &p->sta[ac];
1239
1240 ath6kl_add_le32(&st_ap->tx_bytes, st_p->tx_bytes);
1241 ath6kl_add_le32(&st_ap->tx_pkts, st_p->tx_pkts);
1242 ath6kl_add_le32(&st_ap->tx_error, st_p->tx_error);
1243 ath6kl_add_le32(&st_ap->tx_discard, st_p->tx_discard);
1244 ath6kl_add_le32(&st_ap->rx_bytes, st_p->rx_bytes);
1245 ath6kl_add_le32(&st_ap->rx_pkts, st_p->rx_pkts);
1246 ath6kl_add_le32(&st_ap->rx_error, st_p->rx_error);
1247 ath6kl_add_le32(&st_ap->rx_discard, st_p->rx_discard);
1248 }
1249
1250 } else {
1251 ath6kl_update_target_stats(ar, ptr, len);
1252 }
1253 }
1254
1255 void ath6kl_wakeup_event(void *dev)
1256 {
1257 struct ath6kl *ar = (struct ath6kl *) dev;
1258
1259 wake_up(&ar->event_wq);
1260 }
1261
1262 void ath6kl_txpwr_rx_evt(void *devt, u8 tx_pwr)
1263 {
1264 struct ath6kl *ar = (struct ath6kl *) devt;
1265
1266 ar->tx_pwr = tx_pwr;
1267 wake_up(&ar->event_wq);
1268 }
1269
1270 void ath6kl_pspoll_event(struct ath6kl *ar, u8 aid)
1271 {
1272 struct ath6kl_sta *conn;
1273 struct sk_buff *skb;
1274 bool psq_empty = false;
1275
1276 conn = ath6kl_find_sta_by_aid(ar, aid);
1277
1278 if (!conn)
1279 return;
1280 /*
1281 * Send out a packet queued on ps queue. When the ps queue
1282 * becomes empty update the PVB for this station.
1283 */
1284 spin_lock_bh(&conn->psq_lock);
1285 psq_empty = skb_queue_empty(&conn->psq);
1286 spin_unlock_bh(&conn->psq_lock);
1287
1288 if (psq_empty)
1289 /* TODO: Send out a NULL data frame */
1290 return;
1291
1292 spin_lock_bh(&conn->psq_lock);
1293 skb = skb_dequeue(&conn->psq);
1294 spin_unlock_bh(&conn->psq_lock);
1295
1296 conn->sta_flags |= STA_PS_POLLED;
1297 ath6kl_data_tx(skb, ar->net_dev);
1298 conn->sta_flags &= ~STA_PS_POLLED;
1299
1300 spin_lock_bh(&conn->psq_lock);
1301 psq_empty = skb_queue_empty(&conn->psq);
1302 spin_unlock_bh(&conn->psq_lock);
1303
1304 if (psq_empty)
1305 ath6kl_wmi_set_pvb_cmd(ar->wmi, conn->aid, 0);
1306 }
1307
1308 void ath6kl_dtimexpiry_event(struct ath6kl *ar)
1309 {
1310 bool mcastq_empty = false;
1311 struct sk_buff *skb;
1312 /* TODO: Pass vif instead of taking it from ar */
1313 struct ath6kl_vif *vif = ar->vif;
1314
1315 /*
1316 * If there are no associated STAs, ignore the DTIM expiry event.
1317 * There can be potential race conditions where the last associated
1318 * STA may disconnect & before the host could clear the 'Indicate
1319 * DTIM' request to the firmware, the firmware would have just
1320 * indicated a DTIM expiry event. The race is between 'clear DTIM
1321 * expiry cmd' going from the host to the firmware & the DTIM
1322 * expiry event happening from the firmware to the host.
1323 */
1324 if (!ar->sta_list_index)
1325 return;
1326
1327 spin_lock_bh(&ar->mcastpsq_lock);
1328 mcastq_empty = skb_queue_empty(&ar->mcastpsq);
1329 spin_unlock_bh(&ar->mcastpsq_lock);
1330
1331 if (mcastq_empty)
1332 return;
1333
1334 /* set the STA flag to dtim_expired for the frame to go out */
1335 set_bit(DTIM_EXPIRED, &vif->flags);
1336
1337 spin_lock_bh(&ar->mcastpsq_lock);
1338 while ((skb = skb_dequeue(&ar->mcastpsq)) != NULL) {
1339 spin_unlock_bh(&ar->mcastpsq_lock);
1340
1341 ath6kl_data_tx(skb, ar->net_dev);
1342
1343 spin_lock_bh(&ar->mcastpsq_lock);
1344 }
1345 spin_unlock_bh(&ar->mcastpsq_lock);
1346
1347 clear_bit(DTIM_EXPIRED, &vif->flags);
1348
1349 /* clear the LSB of the BitMapCtl field of the TIM IE */
1350 ath6kl_wmi_set_pvb_cmd(ar->wmi, MCAST_AID, 0);
1351 }
1352
1353 void ath6kl_disconnect_event(struct ath6kl *ar, u8 reason, u8 *bssid,
1354 u8 assoc_resp_len, u8 *assoc_info,
1355 u16 prot_reason_status)
1356 {
1357 /* TODO: Findout vif instead of taking it from ar */
1358 struct ath6kl_vif *vif = ar->vif;
1359
1360 if (ar->nw_type == AP_NETWORK) {
1361 if (!ath6kl_remove_sta(ar, bssid, prot_reason_status))
1362 return;
1363
1364 /* if no more associated STAs, empty the mcast PS q */
1365 if (ar->sta_list_index == 0) {
1366 spin_lock_bh(&ar->mcastpsq_lock);
1367 skb_queue_purge(&ar->mcastpsq);
1368 spin_unlock_bh(&ar->mcastpsq_lock);
1369
1370 /* clear the LSB of the TIM IE's BitMapCtl field */
1371 if (test_bit(WMI_READY, &ar->flag))
1372 ath6kl_wmi_set_pvb_cmd(ar->wmi, MCAST_AID, 0);
1373 }
1374
1375 if (!is_broadcast_ether_addr(bssid)) {
1376 /* send event to application */
1377 cfg80211_del_sta(ar->net_dev, bssid, GFP_KERNEL);
1378 }
1379
1380 if (memcmp(ar->net_dev->dev_addr, bssid, ETH_ALEN) == 0) {
1381 memset(ar->wep_key_list, 0, sizeof(ar->wep_key_list));
1382 clear_bit(CONNECTED, &vif->flags);
1383 }
1384 return;
1385 }
1386
1387 ath6kl_cfg80211_disconnect_event(ar, reason, bssid,
1388 assoc_resp_len, assoc_info,
1389 prot_reason_status);
1390
1391 aggr_reset_state(ar->aggr_cntxt);
1392
1393 del_timer(&ar->disconnect_timer);
1394
1395 ath6kl_dbg(ATH6KL_DBG_WLAN_CONNECT,
1396 "disconnect reason is %d\n", reason);
1397
1398 /*
1399 * If the event is due to disconnect cmd from the host, only they
1400 * the target would stop trying to connect. Under any other
1401 * condition, target would keep trying to connect.
1402 */
1403 if (reason == DISCONNECT_CMD) {
1404 if (!ar->usr_bss_filter && test_bit(WMI_READY, &ar->flag))
1405 ath6kl_wmi_bssfilter_cmd(ar->wmi, NONE_BSS_FILTER, 0);
1406 } else {
1407 set_bit(CONNECT_PEND, &vif->flags);
1408 if (((reason == ASSOC_FAILED) &&
1409 (prot_reason_status == 0x11)) ||
1410 ((reason == ASSOC_FAILED) && (prot_reason_status == 0x0)
1411 && (ar->reconnect_flag == 1))) {
1412 set_bit(CONNECTED, &vif->flags);
1413 return;
1414 }
1415 }
1416
1417 /* update connect & link status atomically */
1418 spin_lock_bh(&ar->lock);
1419 clear_bit(CONNECTED, &vif->flags);
1420 netif_carrier_off(ar->net_dev);
1421 spin_unlock_bh(&ar->lock);
1422
1423 if ((reason != CSERV_DISCONNECT) || (ar->reconnect_flag != 1))
1424 ar->reconnect_flag = 0;
1425
1426 if (reason != CSERV_DISCONNECT)
1427 ar->user_key_ctrl = 0;
1428
1429 netif_stop_queue(ar->net_dev);
1430 memset(ar->bssid, 0, sizeof(ar->bssid));
1431 ar->bss_ch = 0;
1432
1433 ath6kl_tx_data_cleanup(ar);
1434 }
1435
1436 static int ath6kl_open(struct net_device *dev)
1437 {
1438 struct ath6kl *ar = ath6kl_priv(dev);
1439 struct ath6kl_vif *vif = netdev_priv(dev);
1440
1441 spin_lock_bh(&ar->lock);
1442
1443 set_bit(WLAN_ENABLED, &vif->flags);
1444
1445 if (test_bit(CONNECTED, &vif->flags)) {
1446 netif_carrier_on(dev);
1447 netif_wake_queue(dev);
1448 } else
1449 netif_carrier_off(dev);
1450
1451 spin_unlock_bh(&ar->lock);
1452
1453 return 0;
1454 }
1455
1456 static int ath6kl_close(struct net_device *dev)
1457 {
1458 struct ath6kl *ar = ath6kl_priv(dev);
1459 struct ath6kl_vif *vif = netdev_priv(dev);
1460
1461 netif_stop_queue(dev);
1462
1463 ath6kl_disconnect(ar);
1464
1465 if (test_bit(WMI_READY, &ar->flag)) {
1466 if (ath6kl_wmi_scanparams_cmd(ar->wmi, 0xFFFF, 0, 0, 0, 0, 0, 0,
1467 0, 0, 0))
1468 return -EIO;
1469
1470 clear_bit(WLAN_ENABLED, &vif->flags);
1471 }
1472
1473 ath6kl_cfg80211_scan_complete_event(ar, -ECANCELED);
1474
1475 return 0;
1476 }
1477
1478 static struct net_device_stats *ath6kl_get_stats(struct net_device *dev)
1479 {
1480 struct ath6kl *ar = ath6kl_priv(dev);
1481
1482 return &ar->net_stats;
1483 }
1484
1485 static struct net_device_ops ath6kl_netdev_ops = {
1486 .ndo_open = ath6kl_open,
1487 .ndo_stop = ath6kl_close,
1488 .ndo_start_xmit = ath6kl_data_tx,
1489 .ndo_get_stats = ath6kl_get_stats,
1490 };
1491
1492 void init_netdev(struct net_device *dev)
1493 {
1494 dev->netdev_ops = &ath6kl_netdev_ops;
1495 dev->watchdog_timeo = ATH6KL_TX_TIMEOUT;
1496
1497 dev->needed_headroom = ETH_HLEN;
1498 dev->needed_headroom += sizeof(struct ath6kl_llc_snap_hdr) +
1499 sizeof(struct wmi_data_hdr) + HTC_HDR_LENGTH
1500 + WMI_MAX_TX_META_SZ + ATH6KL_HTC_ALIGN_BYTES;
1501
1502 return;
1503 }
Linux kernel - Deliverables
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