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Merge tag 'iio-for-4.13b' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23...
[mirror_ubuntu-artful-kernel.git] / drivers / net / wireless / ath / ath6kl / main.c
1 /*
2 * Copyright (c) 2004-2011 Atheros Communications Inc.
3 * Copyright (c) 2011-2012 Qualcomm Atheros, Inc.
4 *
5 * Permission to use, copy, modify, and/or distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
8 *
9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16 */
17
18 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
19
20 #include "core.h"
21 #include "hif-ops.h"
22 #include "cfg80211.h"
23 #include "target.h"
24 #include "debug.h"
25
26 struct ath6kl_sta *ath6kl_find_sta(struct ath6kl_vif *vif, u8 *node_addr)
27 {
28 struct ath6kl *ar = vif->ar;
29 struct ath6kl_sta *conn = NULL;
30 u8 i, max_conn;
31
32 if (is_zero_ether_addr(node_addr))
33 return NULL;
34
35 max_conn = (vif->nw_type == AP_NETWORK) ? AP_MAX_NUM_STA : 0;
36
37 for (i = 0; i < max_conn; i++) {
38 if (memcmp(node_addr, ar->sta_list[i].mac, ETH_ALEN) == 0) {
39 conn = &ar->sta_list[i];
40 break;
41 }
42 }
43
44 return conn;
45 }
46
47 struct ath6kl_sta *ath6kl_find_sta_by_aid(struct ath6kl *ar, u8 aid)
48 {
49 struct ath6kl_sta *conn = NULL;
50 u8 ctr;
51
52 for (ctr = 0; ctr < AP_MAX_NUM_STA; ctr++) {
53 if (ar->sta_list[ctr].aid == aid) {
54 conn = &ar->sta_list[ctr];
55 break;
56 }
57 }
58 return conn;
59 }
60
61 static void ath6kl_add_new_sta(struct ath6kl_vif *vif, u8 *mac, u16 aid,
62 u8 *wpaie, size_t ielen, u8 keymgmt,
63 u8 ucipher, u8 auth, u8 apsd_info)
64 {
65 struct ath6kl *ar = vif->ar;
66 struct ath6kl_sta *sta;
67 u8 free_slot;
68
69 free_slot = aid - 1;
70
71 sta = &ar->sta_list[free_slot];
72 memcpy(sta->mac, mac, ETH_ALEN);
73 if (ielen <= ATH6KL_MAX_IE)
74 memcpy(sta->wpa_ie, wpaie, ielen);
75 sta->aid = aid;
76 sta->keymgmt = keymgmt;
77 sta->ucipher = ucipher;
78 sta->auth = auth;
79 sta->apsd_info = apsd_info;
80
81 ar->sta_list_index = ar->sta_list_index | (1 << free_slot);
82 ar->ap_stats.sta[free_slot].aid = cpu_to_le32(aid);
83 aggr_conn_init(vif, vif->aggr_cntxt, sta->aggr_conn);
84 }
85
86 static void ath6kl_sta_cleanup(struct ath6kl *ar, u8 i)
87 {
88 struct ath6kl_sta *sta = &ar->sta_list[i];
89 struct ath6kl_mgmt_buff *entry, *tmp;
90
91 /* empty the queued pkts in the PS queue if any */
92 spin_lock_bh(&sta->psq_lock);
93 skb_queue_purge(&sta->psq);
94 skb_queue_purge(&sta->apsdq);
95
96 if (sta->mgmt_psq_len != 0) {
97 list_for_each_entry_safe(entry, tmp, &sta->mgmt_psq, list) {
98 kfree(entry);
99 }
100 INIT_LIST_HEAD(&sta->mgmt_psq);
101 sta->mgmt_psq_len = 0;
102 }
103
104 spin_unlock_bh(&sta->psq_lock);
105
106 memset(&ar->ap_stats.sta[sta->aid - 1], 0,
107 sizeof(struct wmi_per_sta_stat));
108 eth_zero_addr(sta->mac);
109 memset(sta->wpa_ie, 0, ATH6KL_MAX_IE);
110 sta->aid = 0;
111 sta->sta_flags = 0;
112
113 ar->sta_list_index = ar->sta_list_index & ~(1 << i);
114 aggr_reset_state(sta->aggr_conn);
115 }
116
117 static u8 ath6kl_remove_sta(struct ath6kl *ar, u8 *mac, u16 reason)
118 {
119 u8 i, removed = 0;
120
121 if (is_zero_ether_addr(mac))
122 return removed;
123
124 if (is_broadcast_ether_addr(mac)) {
125 ath6kl_dbg(ATH6KL_DBG_TRC, "deleting all station\n");
126
127 for (i = 0; i < AP_MAX_NUM_STA; i++) {
128 if (!is_zero_ether_addr(ar->sta_list[i].mac)) {
129 ath6kl_sta_cleanup(ar, i);
130 removed = 1;
131 }
132 }
133 } else {
134 for (i = 0; i < AP_MAX_NUM_STA; i++) {
135 if (memcmp(ar->sta_list[i].mac, mac, ETH_ALEN) == 0) {
136 ath6kl_dbg(ATH6KL_DBG_TRC,
137 "deleting station %pM aid=%d reason=%d\n",
138 mac, ar->sta_list[i].aid, reason);
139 ath6kl_sta_cleanup(ar, i);
140 removed = 1;
141 break;
142 }
143 }
144 }
145
146 return removed;
147 }
148
149 enum htc_endpoint_id ath6kl_ac2_endpoint_id(void *devt, u8 ac)
150 {
151 struct ath6kl *ar = devt;
152 return ar->ac2ep_map[ac];
153 }
154
155 struct ath6kl_cookie *ath6kl_alloc_cookie(struct ath6kl *ar)
156 {
157 struct ath6kl_cookie *cookie;
158
159 cookie = ar->cookie_list;
160 if (cookie != NULL) {
161 ar->cookie_list = cookie->arc_list_next;
162 ar->cookie_count--;
163 }
164
165 return cookie;
166 }
167
168 void ath6kl_cookie_init(struct ath6kl *ar)
169 {
170 u32 i;
171
172 ar->cookie_list = NULL;
173 ar->cookie_count = 0;
174
175 memset(ar->cookie_mem, 0, sizeof(ar->cookie_mem));
176
177 for (i = 0; i < MAX_COOKIE_NUM; i++)
178 ath6kl_free_cookie(ar, &ar->cookie_mem[i]);
179 }
180
181 void ath6kl_cookie_cleanup(struct ath6kl *ar)
182 {
183 ar->cookie_list = NULL;
184 ar->cookie_count = 0;
185 }
186
187 void ath6kl_free_cookie(struct ath6kl *ar, struct ath6kl_cookie *cookie)
188 {
189 /* Insert first */
190
191 if (!ar || !cookie)
192 return;
193
194 cookie->arc_list_next = ar->cookie_list;
195 ar->cookie_list = cookie;
196 ar->cookie_count++;
197 }
198
199 /*
200 * Read from the hardware through its diagnostic window. No cooperation
201 * from the firmware is required for this.
202 */
203 int ath6kl_diag_read32(struct ath6kl *ar, u32 address, u32 *value)
204 {
205 int ret;
206
207 ret = ath6kl_hif_diag_read32(ar, address, value);
208 if (ret) {
209 ath6kl_warn("failed to read32 through diagnose window: %d\n",
210 ret);
211 return ret;
212 }
213
214 return 0;
215 }
216
217 /*
218 * Write to the ATH6KL through its diagnostic window. No cooperation from
219 * the Target is required for this.
220 */
221 int ath6kl_diag_write32(struct ath6kl *ar, u32 address, __le32 value)
222 {
223 int ret;
224
225 ret = ath6kl_hif_diag_write32(ar, address, value);
226
227 if (ret) {
228 ath6kl_err("failed to write 0x%x during diagnose window to 0x%x\n",
229 address, value);
230 return ret;
231 }
232
233 return 0;
234 }
235
236 int ath6kl_diag_read(struct ath6kl *ar, u32 address, void *data, u32 length)
237 {
238 u32 count, *buf = data;
239 int ret;
240
241 if (WARN_ON(length % 4))
242 return -EINVAL;
243
244 for (count = 0; count < length / 4; count++, address += 4) {
245 ret = ath6kl_diag_read32(ar, address, &buf[count]);
246 if (ret)
247 return ret;
248 }
249
250 return 0;
251 }
252
253 int ath6kl_diag_write(struct ath6kl *ar, u32 address, void *data, u32 length)
254 {
255 u32 count;
256 __le32 *buf = data;
257 int ret;
258
259 if (WARN_ON(length % 4))
260 return -EINVAL;
261
262 for (count = 0; count < length / 4; count++, address += 4) {
263 ret = ath6kl_diag_write32(ar, address, buf[count]);
264 if (ret)
265 return ret;
266 }
267
268 return 0;
269 }
270
271 int ath6kl_read_fwlogs(struct ath6kl *ar)
272 {
273 struct ath6kl_dbglog_hdr debug_hdr;
274 struct ath6kl_dbglog_buf debug_buf;
275 u32 address, length, dropped, firstbuf, debug_hdr_addr;
276 int ret, loop;
277 u8 *buf;
278
279 buf = kmalloc(ATH6KL_FWLOG_PAYLOAD_SIZE, GFP_KERNEL);
280 if (!buf)
281 return -ENOMEM;
282
283 address = TARG_VTOP(ar->target_type,
284 ath6kl_get_hi_item_addr(ar,
285 HI_ITEM(hi_dbglog_hdr)));
286
287 ret = ath6kl_diag_read32(ar, address, &debug_hdr_addr);
288 if (ret)
289 goto out;
290
291 /* Get the contents of the ring buffer */
292 if (debug_hdr_addr == 0) {
293 ath6kl_warn("Invalid address for debug_hdr_addr\n");
294 ret = -EINVAL;
295 goto out;
296 }
297
298 address = TARG_VTOP(ar->target_type, debug_hdr_addr);
299 ret = ath6kl_diag_read(ar, address, &debug_hdr, sizeof(debug_hdr));
300 if (ret)
301 goto out;
302
303 address = TARG_VTOP(ar->target_type,
304 le32_to_cpu(debug_hdr.dbuf_addr));
305 firstbuf = address;
306 dropped = le32_to_cpu(debug_hdr.dropped);
307 ret = ath6kl_diag_read(ar, address, &debug_buf, sizeof(debug_buf));
308 if (ret)
309 goto out;
310
311 loop = 100;
312
313 do {
314 address = TARG_VTOP(ar->target_type,
315 le32_to_cpu(debug_buf.buffer_addr));
316 length = le32_to_cpu(debug_buf.length);
317
318 if (length != 0 && (le32_to_cpu(debug_buf.length) <=
319 le32_to_cpu(debug_buf.bufsize))) {
320 length = ALIGN(length, 4);
321
322 ret = ath6kl_diag_read(ar, address,
323 buf, length);
324 if (ret)
325 goto out;
326
327 ath6kl_debug_fwlog_event(ar, buf, length);
328 }
329
330 address = TARG_VTOP(ar->target_type,
331 le32_to_cpu(debug_buf.next));
332 ret = ath6kl_diag_read(ar, address, &debug_buf,
333 sizeof(debug_buf));
334 if (ret)
335 goto out;
336
337 loop--;
338
339 if (WARN_ON(loop == 0)) {
340 ret = -ETIMEDOUT;
341 goto out;
342 }
343 } while (address != firstbuf);
344
345 out:
346 kfree(buf);
347
348 return ret;
349 }
350
351 static void ath6kl_install_static_wep_keys(struct ath6kl_vif *vif)
352 {
353 u8 index;
354 u8 keyusage;
355
356 for (index = 0; index <= WMI_MAX_KEY_INDEX; index++) {
357 if (vif->wep_key_list[index].key_len) {
358 keyusage = GROUP_USAGE;
359 if (index == vif->def_txkey_index)
360 keyusage |= TX_USAGE;
361
362 ath6kl_wmi_addkey_cmd(vif->ar->wmi, vif->fw_vif_idx,
363 index,
364 WEP_CRYPT,
365 keyusage,
366 vif->wep_key_list[index].key_len,
367 NULL, 0,
368 vif->wep_key_list[index].key,
369 KEY_OP_INIT_VAL, NULL,
370 NO_SYNC_WMIFLAG);
371 }
372 }
373 }
374
375 void ath6kl_connect_ap_mode_bss(struct ath6kl_vif *vif, u16 channel)
376 {
377 struct ath6kl *ar = vif->ar;
378 struct ath6kl_req_key *ik;
379 int res;
380 u8 key_rsc[ATH6KL_KEY_SEQ_LEN];
381
382 ik = &ar->ap_mode_bkey;
383
384 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "AP mode started on %u MHz\n", channel);
385
386 switch (vif->auth_mode) {
387 case NONE_AUTH:
388 if (vif->prwise_crypto == WEP_CRYPT)
389 ath6kl_install_static_wep_keys(vif);
390 if (!ik->valid || ik->key_type != WAPI_CRYPT)
391 break;
392 /* for WAPI, we need to set the delayed group key, continue: */
393 case WPA_PSK_AUTH:
394 case WPA2_PSK_AUTH:
395 case (WPA_PSK_AUTH | WPA2_PSK_AUTH):
396 if (!ik->valid)
397 break;
398
399 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
400 "Delayed addkey for the initial group key for AP mode\n");
401 memset(key_rsc, 0, sizeof(key_rsc));
402 res = ath6kl_wmi_addkey_cmd(
403 ar->wmi, vif->fw_vif_idx, ik->key_index, ik->key_type,
404 GROUP_USAGE, ik->key_len, key_rsc, ATH6KL_KEY_SEQ_LEN,
405 ik->key,
406 KEY_OP_INIT_VAL, NULL, SYNC_BOTH_WMIFLAG);
407 if (res) {
408 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
409 "Delayed addkey failed: %d\n", res);
410 }
411 break;
412 }
413
414 if (ar->last_ch != channel)
415 /* we actually don't know the phymode, default to HT20 */
416 ath6kl_cfg80211_ch_switch_notify(vif, channel, WMI_11G_HT20);
417
418 ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx, NONE_BSS_FILTER, 0);
419 set_bit(CONNECTED, &vif->flags);
420 netif_carrier_on(vif->ndev);
421 }
422
423 void ath6kl_connect_ap_mode_sta(struct ath6kl_vif *vif, u16 aid, u8 *mac_addr,
424 u8 keymgmt, u8 ucipher, u8 auth,
425 u8 assoc_req_len, u8 *assoc_info, u8 apsd_info)
426 {
427 u8 *ies = NULL, *wpa_ie = NULL, *pos;
428 size_t ies_len = 0;
429 struct station_info sinfo;
430
431 ath6kl_dbg(ATH6KL_DBG_TRC, "new station %pM aid=%d\n", mac_addr, aid);
432
433 if (assoc_req_len > sizeof(struct ieee80211_hdr_3addr)) {
434 struct ieee80211_mgmt *mgmt =
435 (struct ieee80211_mgmt *) assoc_info;
436 if (ieee80211_is_assoc_req(mgmt->frame_control) &&
437 assoc_req_len >= sizeof(struct ieee80211_hdr_3addr) +
438 sizeof(mgmt->u.assoc_req)) {
439 ies = mgmt->u.assoc_req.variable;
440 ies_len = assoc_info + assoc_req_len - ies;
441 } else if (ieee80211_is_reassoc_req(mgmt->frame_control) &&
442 assoc_req_len >= sizeof(struct ieee80211_hdr_3addr)
443 + sizeof(mgmt->u.reassoc_req)) {
444 ies = mgmt->u.reassoc_req.variable;
445 ies_len = assoc_info + assoc_req_len - ies;
446 }
447 }
448
449 pos = ies;
450 while (pos && pos + 1 < ies + ies_len) {
451 if (pos + 2 + pos[1] > ies + ies_len)
452 break;
453 if (pos[0] == WLAN_EID_RSN)
454 wpa_ie = pos; /* RSN IE */
455 else if (pos[0] == WLAN_EID_VENDOR_SPECIFIC &&
456 pos[1] >= 4 &&
457 pos[2] == 0x00 && pos[3] == 0x50 && pos[4] == 0xf2) {
458 if (pos[5] == 0x01)
459 wpa_ie = pos; /* WPA IE */
460 else if (pos[5] == 0x04) {
461 wpa_ie = pos; /* WPS IE */
462 break; /* overrides WPA/RSN IE */
463 }
464 } else if (pos[0] == 0x44 && wpa_ie == NULL) {
465 /*
466 * Note: WAPI Parameter Set IE re-uses Element ID that
467 * was officially allocated for BSS AC Access Delay. As
468 * such, we need to be a bit more careful on when
469 * parsing the frame. However, BSS AC Access Delay
470 * element is not supposed to be included in
471 * (Re)Association Request frames, so this should not
472 * cause problems.
473 */
474 wpa_ie = pos; /* WAPI IE */
475 break;
476 }
477 pos += 2 + pos[1];
478 }
479
480 ath6kl_add_new_sta(vif, mac_addr, aid, wpa_ie,
481 wpa_ie ? 2 + wpa_ie[1] : 0,
482 keymgmt, ucipher, auth, apsd_info);
483
484 /* send event to application */
485 memset(&sinfo, 0, sizeof(sinfo));
486
487 /* TODO: sinfo.generation */
488
489 sinfo.assoc_req_ies = ies;
490 sinfo.assoc_req_ies_len = ies_len;
491
492 cfg80211_new_sta(vif->ndev, mac_addr, &sinfo, GFP_KERNEL);
493
494 netif_wake_queue(vif->ndev);
495 }
496
497 void disconnect_timer_handler(unsigned long ptr)
498 {
499 struct net_device *dev = (struct net_device *)ptr;
500 struct ath6kl_vif *vif = netdev_priv(dev);
501
502 ath6kl_init_profile_info(vif);
503 ath6kl_disconnect(vif);
504 }
505
506 void ath6kl_disconnect(struct ath6kl_vif *vif)
507 {
508 if (test_bit(CONNECTED, &vif->flags) ||
509 test_bit(CONNECT_PEND, &vif->flags)) {
510 ath6kl_wmi_disconnect_cmd(vif->ar->wmi, vif->fw_vif_idx);
511 /*
512 * Disconnect command is issued, clear the connect pending
513 * flag. The connected flag will be cleared in
514 * disconnect event notification.
515 */
516 clear_bit(CONNECT_PEND, &vif->flags);
517 }
518 }
519
520 /* WMI Event handlers */
521
522 void ath6kl_ready_event(void *devt, u8 *datap, u32 sw_ver, u32 abi_ver,
523 enum wmi_phy_cap cap)
524 {
525 struct ath6kl *ar = devt;
526
527 memcpy(ar->mac_addr, datap, ETH_ALEN);
528
529 ath6kl_dbg(ATH6KL_DBG_BOOT,
530 "ready event mac addr %pM sw_ver 0x%x abi_ver 0x%x cap 0x%x\n",
531 ar->mac_addr, sw_ver, abi_ver, cap);
532
533 ar->version.wlan_ver = sw_ver;
534 ar->version.abi_ver = abi_ver;
535 ar->hw.cap = cap;
536
537 if (strlen(ar->wiphy->fw_version) == 0) {
538 snprintf(ar->wiphy->fw_version,
539 sizeof(ar->wiphy->fw_version),
540 "%u.%u.%u.%u",
541 (ar->version.wlan_ver & 0xf0000000) >> 28,
542 (ar->version.wlan_ver & 0x0f000000) >> 24,
543 (ar->version.wlan_ver & 0x00ff0000) >> 16,
544 (ar->version.wlan_ver & 0x0000ffff));
545 }
546
547 /* indicate to the waiting thread that the ready event was received */
548 set_bit(WMI_READY, &ar->flag);
549 wake_up(&ar->event_wq);
550 }
551
552 void ath6kl_scan_complete_evt(struct ath6kl_vif *vif, int status)
553 {
554 struct ath6kl *ar = vif->ar;
555 bool aborted = false;
556
557 if (status != WMI_SCAN_STATUS_SUCCESS)
558 aborted = true;
559
560 ath6kl_cfg80211_scan_complete_event(vif, aborted);
561
562 if (!ar->usr_bss_filter) {
563 clear_bit(CLEAR_BSSFILTER_ON_BEACON, &vif->flags);
564 ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx,
565 NONE_BSS_FILTER, 0);
566 }
567
568 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "scan complete: %d\n", status);
569 }
570
571 static int ath6kl_commit_ch_switch(struct ath6kl_vif *vif, u16 channel)
572 {
573 struct ath6kl *ar = vif->ar;
574
575 vif->profile.ch = cpu_to_le16(channel);
576
577 switch (vif->nw_type) {
578 case AP_NETWORK:
579 /*
580 * reconfigure any saved RSN IE capabilites in the beacon /
581 * probe response to stay in sync with the supplicant.
582 */
583 if (vif->rsn_capab &&
584 test_bit(ATH6KL_FW_CAPABILITY_RSN_CAP_OVERRIDE,
585 ar->fw_capabilities))
586 ath6kl_wmi_set_ie_cmd(ar->wmi, vif->fw_vif_idx,
587 WLAN_EID_RSN, WMI_RSN_IE_CAPB,
588 (const u8 *) &vif->rsn_capab,
589 sizeof(vif->rsn_capab));
590
591 return ath6kl_wmi_ap_profile_commit(ar->wmi, vif->fw_vif_idx,
592 &vif->profile);
593 default:
594 ath6kl_err("won't switch channels nw_type=%d\n", vif->nw_type);
595 return -ENOTSUPP;
596 }
597 }
598
599 static void ath6kl_check_ch_switch(struct ath6kl *ar, u16 channel)
600 {
601 struct ath6kl_vif *vif;
602 int res = 0;
603
604 if (!ar->want_ch_switch)
605 return;
606
607 spin_lock_bh(&ar->list_lock);
608 list_for_each_entry(vif, &ar->vif_list, list) {
609 if (ar->want_ch_switch & (1 << vif->fw_vif_idx))
610 res = ath6kl_commit_ch_switch(vif, channel);
611
612 /* if channel switch failed, oh well we tried */
613 ar->want_ch_switch &= ~(1 << vif->fw_vif_idx);
614
615 if (res)
616 ath6kl_err("channel switch failed nw_type %d res %d\n",
617 vif->nw_type, res);
618 }
619 spin_unlock_bh(&ar->list_lock);
620 }
621
622 void ath6kl_connect_event(struct ath6kl_vif *vif, u16 channel, u8 *bssid,
623 u16 listen_int, u16 beacon_int,
624 enum network_type net_type, u8 beacon_ie_len,
625 u8 assoc_req_len, u8 assoc_resp_len,
626 u8 *assoc_info)
627 {
628 struct ath6kl *ar = vif->ar;
629
630 ath6kl_cfg80211_connect_event(vif, channel, bssid,
631 listen_int, beacon_int,
632 net_type, beacon_ie_len,
633 assoc_req_len, assoc_resp_len,
634 assoc_info);
635
636 memcpy(vif->bssid, bssid, sizeof(vif->bssid));
637 vif->bss_ch = channel;
638
639 if ((vif->nw_type == INFRA_NETWORK)) {
640 ath6kl_wmi_listeninterval_cmd(ar->wmi, vif->fw_vif_idx,
641 vif->listen_intvl_t, 0);
642 ath6kl_check_ch_switch(ar, channel);
643 }
644
645 netif_wake_queue(vif->ndev);
646
647 /* Update connect & link status atomically */
648 spin_lock_bh(&vif->if_lock);
649 set_bit(CONNECTED, &vif->flags);
650 clear_bit(CONNECT_PEND, &vif->flags);
651 netif_carrier_on(vif->ndev);
652 spin_unlock_bh(&vif->if_lock);
653
654 aggr_reset_state(vif->aggr_cntxt->aggr_conn);
655 vif->reconnect_flag = 0;
656
657 if ((vif->nw_type == ADHOC_NETWORK) && ar->ibss_ps_enable) {
658 memset(ar->node_map, 0, sizeof(ar->node_map));
659 ar->node_num = 0;
660 ar->next_ep_id = ENDPOINT_2;
661 }
662
663 if (!ar->usr_bss_filter) {
664 set_bit(CLEAR_BSSFILTER_ON_BEACON, &vif->flags);
665 ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx,
666 CURRENT_BSS_FILTER, 0);
667 }
668 }
669
670 void ath6kl_tkip_micerr_event(struct ath6kl_vif *vif, u8 keyid, bool ismcast)
671 {
672 struct ath6kl_sta *sta;
673 struct ath6kl *ar = vif->ar;
674 u8 tsc[6];
675
676 /*
677 * For AP case, keyid will have aid of STA which sent pkt with
678 * MIC error. Use this aid to get MAC & send it to hostapd.
679 */
680 if (vif->nw_type == AP_NETWORK) {
681 sta = ath6kl_find_sta_by_aid(ar, (keyid >> 2));
682 if (!sta)
683 return;
684
685 ath6kl_dbg(ATH6KL_DBG_TRC,
686 "ap tkip mic error received from aid=%d\n", keyid);
687
688 memset(tsc, 0, sizeof(tsc)); /* FIX: get correct TSC */
689 cfg80211_michael_mic_failure(vif->ndev, sta->mac,
690 NL80211_KEYTYPE_PAIRWISE, keyid,
691 tsc, GFP_KERNEL);
692 } else {
693 ath6kl_cfg80211_tkip_micerr_event(vif, keyid, ismcast);
694 }
695 }
696
697 static void ath6kl_update_target_stats(struct ath6kl_vif *vif, u8 *ptr, u32 len)
698 {
699 struct wmi_target_stats *tgt_stats =
700 (struct wmi_target_stats *) ptr;
701 struct ath6kl *ar = vif->ar;
702 struct target_stats *stats = &vif->target_stats;
703 struct tkip_ccmp_stats *ccmp_stats;
704 s32 rate;
705 u8 ac;
706
707 if (len < sizeof(*tgt_stats))
708 return;
709
710 ath6kl_dbg(ATH6KL_DBG_TRC, "updating target stats\n");
711
712 stats->tx_pkt += le32_to_cpu(tgt_stats->stats.tx.pkt);
713 stats->tx_byte += le32_to_cpu(tgt_stats->stats.tx.byte);
714 stats->tx_ucast_pkt += le32_to_cpu(tgt_stats->stats.tx.ucast_pkt);
715 stats->tx_ucast_byte += le32_to_cpu(tgt_stats->stats.tx.ucast_byte);
716 stats->tx_mcast_pkt += le32_to_cpu(tgt_stats->stats.tx.mcast_pkt);
717 stats->tx_mcast_byte += le32_to_cpu(tgt_stats->stats.tx.mcast_byte);
718 stats->tx_bcast_pkt += le32_to_cpu(tgt_stats->stats.tx.bcast_pkt);
719 stats->tx_bcast_byte += le32_to_cpu(tgt_stats->stats.tx.bcast_byte);
720 stats->tx_rts_success_cnt +=
721 le32_to_cpu(tgt_stats->stats.tx.rts_success_cnt);
722
723 for (ac = 0; ac < WMM_NUM_AC; ac++)
724 stats->tx_pkt_per_ac[ac] +=
725 le32_to_cpu(tgt_stats->stats.tx.pkt_per_ac[ac]);
726
727 stats->tx_err += le32_to_cpu(tgt_stats->stats.tx.err);
728 stats->tx_fail_cnt += le32_to_cpu(tgt_stats->stats.tx.fail_cnt);
729 stats->tx_retry_cnt += le32_to_cpu(tgt_stats->stats.tx.retry_cnt);
730 stats->tx_mult_retry_cnt +=
731 le32_to_cpu(tgt_stats->stats.tx.mult_retry_cnt);
732 stats->tx_rts_fail_cnt +=
733 le32_to_cpu(tgt_stats->stats.tx.rts_fail_cnt);
734
735 rate = a_sle32_to_cpu(tgt_stats->stats.tx.ucast_rate);
736 stats->tx_ucast_rate = ath6kl_wmi_get_rate(ar->wmi, rate);
737
738 stats->rx_pkt += le32_to_cpu(tgt_stats->stats.rx.pkt);
739 stats->rx_byte += le32_to_cpu(tgt_stats->stats.rx.byte);
740 stats->rx_ucast_pkt += le32_to_cpu(tgt_stats->stats.rx.ucast_pkt);
741 stats->rx_ucast_byte += le32_to_cpu(tgt_stats->stats.rx.ucast_byte);
742 stats->rx_mcast_pkt += le32_to_cpu(tgt_stats->stats.rx.mcast_pkt);
743 stats->rx_mcast_byte += le32_to_cpu(tgt_stats->stats.rx.mcast_byte);
744 stats->rx_bcast_pkt += le32_to_cpu(tgt_stats->stats.rx.bcast_pkt);
745 stats->rx_bcast_byte += le32_to_cpu(tgt_stats->stats.rx.bcast_byte);
746 stats->rx_frgment_pkt += le32_to_cpu(tgt_stats->stats.rx.frgment_pkt);
747 stats->rx_err += le32_to_cpu(tgt_stats->stats.rx.err);
748 stats->rx_crc_err += le32_to_cpu(tgt_stats->stats.rx.crc_err);
749 stats->rx_key_cache_miss +=
750 le32_to_cpu(tgt_stats->stats.rx.key_cache_miss);
751 stats->rx_decrypt_err += le32_to_cpu(tgt_stats->stats.rx.decrypt_err);
752 stats->rx_dupl_frame += le32_to_cpu(tgt_stats->stats.rx.dupl_frame);
753
754 rate = a_sle32_to_cpu(tgt_stats->stats.rx.ucast_rate);
755 stats->rx_ucast_rate = ath6kl_wmi_get_rate(ar->wmi, rate);
756
757 ccmp_stats = &tgt_stats->stats.tkip_ccmp_stats;
758
759 stats->tkip_local_mic_fail +=
760 le32_to_cpu(ccmp_stats->tkip_local_mic_fail);
761 stats->tkip_cnter_measures_invoked +=
762 le32_to_cpu(ccmp_stats->tkip_cnter_measures_invoked);
763 stats->tkip_fmt_err += le32_to_cpu(ccmp_stats->tkip_fmt_err);
764
765 stats->ccmp_fmt_err += le32_to_cpu(ccmp_stats->ccmp_fmt_err);
766 stats->ccmp_replays += le32_to_cpu(ccmp_stats->ccmp_replays);
767
768 stats->pwr_save_fail_cnt +=
769 le32_to_cpu(tgt_stats->pm_stats.pwr_save_failure_cnt);
770 stats->noise_floor_calib =
771 a_sle32_to_cpu(tgt_stats->noise_floor_calib);
772
773 stats->cs_bmiss_cnt +=
774 le32_to_cpu(tgt_stats->cserv_stats.cs_bmiss_cnt);
775 stats->cs_low_rssi_cnt +=
776 le32_to_cpu(tgt_stats->cserv_stats.cs_low_rssi_cnt);
777 stats->cs_connect_cnt +=
778 le16_to_cpu(tgt_stats->cserv_stats.cs_connect_cnt);
779 stats->cs_discon_cnt +=
780 le16_to_cpu(tgt_stats->cserv_stats.cs_discon_cnt);
781
782 stats->cs_ave_beacon_rssi =
783 a_sle16_to_cpu(tgt_stats->cserv_stats.cs_ave_beacon_rssi);
784
785 stats->cs_last_roam_msec =
786 tgt_stats->cserv_stats.cs_last_roam_msec;
787 stats->cs_snr = tgt_stats->cserv_stats.cs_snr;
788 stats->cs_rssi = a_sle16_to_cpu(tgt_stats->cserv_stats.cs_rssi);
789
790 stats->lq_val = le32_to_cpu(tgt_stats->lq_val);
791
792 stats->wow_pkt_dropped +=
793 le32_to_cpu(tgt_stats->wow_stats.wow_pkt_dropped);
794 stats->wow_host_pkt_wakeups +=
795 tgt_stats->wow_stats.wow_host_pkt_wakeups;
796 stats->wow_host_evt_wakeups +=
797 tgt_stats->wow_stats.wow_host_evt_wakeups;
798 stats->wow_evt_discarded +=
799 le16_to_cpu(tgt_stats->wow_stats.wow_evt_discarded);
800
801 stats->arp_received = le32_to_cpu(tgt_stats->arp_stats.arp_received);
802 stats->arp_replied = le32_to_cpu(tgt_stats->arp_stats.arp_replied);
803 stats->arp_matched = le32_to_cpu(tgt_stats->arp_stats.arp_matched);
804
805 if (test_bit(STATS_UPDATE_PEND, &vif->flags)) {
806 clear_bit(STATS_UPDATE_PEND, &vif->flags);
807 wake_up(&ar->event_wq);
808 }
809 }
810
811 static void ath6kl_add_le32(__le32 *var, __le32 val)
812 {
813 *var = cpu_to_le32(le32_to_cpu(*var) + le32_to_cpu(val));
814 }
815
816 void ath6kl_tgt_stats_event(struct ath6kl_vif *vif, u8 *ptr, u32 len)
817 {
818 struct wmi_ap_mode_stat *p = (struct wmi_ap_mode_stat *) ptr;
819 struct ath6kl *ar = vif->ar;
820 struct wmi_ap_mode_stat *ap = &ar->ap_stats;
821 struct wmi_per_sta_stat *st_ap, *st_p;
822 u8 ac;
823
824 if (vif->nw_type == AP_NETWORK) {
825 if (len < sizeof(*p))
826 return;
827
828 for (ac = 0; ac < AP_MAX_NUM_STA; ac++) {
829 st_ap = &ap->sta[ac];
830 st_p = &p->sta[ac];
831
832 ath6kl_add_le32(&st_ap->tx_bytes, st_p->tx_bytes);
833 ath6kl_add_le32(&st_ap->tx_pkts, st_p->tx_pkts);
834 ath6kl_add_le32(&st_ap->tx_error, st_p->tx_error);
835 ath6kl_add_le32(&st_ap->tx_discard, st_p->tx_discard);
836 ath6kl_add_le32(&st_ap->rx_bytes, st_p->rx_bytes);
837 ath6kl_add_le32(&st_ap->rx_pkts, st_p->rx_pkts);
838 ath6kl_add_le32(&st_ap->rx_error, st_p->rx_error);
839 ath6kl_add_le32(&st_ap->rx_discard, st_p->rx_discard);
840 }
841
842 } else {
843 ath6kl_update_target_stats(vif, ptr, len);
844 }
845 }
846
847 void ath6kl_wakeup_event(void *dev)
848 {
849 struct ath6kl *ar = (struct ath6kl *) dev;
850
851 wake_up(&ar->event_wq);
852 }
853
854 void ath6kl_txpwr_rx_evt(void *devt, u8 tx_pwr)
855 {
856 struct ath6kl *ar = (struct ath6kl *) devt;
857
858 ar->tx_pwr = tx_pwr;
859 wake_up(&ar->event_wq);
860 }
861
862 void ath6kl_pspoll_event(struct ath6kl_vif *vif, u8 aid)
863 {
864 struct ath6kl_sta *conn;
865 struct sk_buff *skb;
866 bool psq_empty = false;
867 struct ath6kl *ar = vif->ar;
868 struct ath6kl_mgmt_buff *mgmt_buf;
869
870 conn = ath6kl_find_sta_by_aid(ar, aid);
871
872 if (!conn)
873 return;
874 /*
875 * Send out a packet queued on ps queue. When the ps queue
876 * becomes empty update the PVB for this station.
877 */
878 spin_lock_bh(&conn->psq_lock);
879 psq_empty = skb_queue_empty(&conn->psq) && (conn->mgmt_psq_len == 0);
880 spin_unlock_bh(&conn->psq_lock);
881
882 if (psq_empty)
883 /* TODO: Send out a NULL data frame */
884 return;
885
886 spin_lock_bh(&conn->psq_lock);
887 if (conn->mgmt_psq_len > 0) {
888 mgmt_buf = list_first_entry(&conn->mgmt_psq,
889 struct ath6kl_mgmt_buff, list);
890 list_del(&mgmt_buf->list);
891 conn->mgmt_psq_len--;
892 spin_unlock_bh(&conn->psq_lock);
893
894 conn->sta_flags |= STA_PS_POLLED;
895 ath6kl_wmi_send_mgmt_cmd(ar->wmi, vif->fw_vif_idx,
896 mgmt_buf->id, mgmt_buf->freq,
897 mgmt_buf->wait, mgmt_buf->buf,
898 mgmt_buf->len, mgmt_buf->no_cck);
899 conn->sta_flags &= ~STA_PS_POLLED;
900 kfree(mgmt_buf);
901 } else {
902 skb = skb_dequeue(&conn->psq);
903 spin_unlock_bh(&conn->psq_lock);
904
905 conn->sta_flags |= STA_PS_POLLED;
906 ath6kl_data_tx(skb, vif->ndev);
907 conn->sta_flags &= ~STA_PS_POLLED;
908 }
909
910 spin_lock_bh(&conn->psq_lock);
911 psq_empty = skb_queue_empty(&conn->psq) && (conn->mgmt_psq_len == 0);
912 spin_unlock_bh(&conn->psq_lock);
913
914 if (psq_empty)
915 ath6kl_wmi_set_pvb_cmd(ar->wmi, vif->fw_vif_idx, conn->aid, 0);
916 }
917
918 void ath6kl_dtimexpiry_event(struct ath6kl_vif *vif)
919 {
920 bool mcastq_empty = false;
921 struct sk_buff *skb;
922 struct ath6kl *ar = vif->ar;
923
924 /*
925 * If there are no associated STAs, ignore the DTIM expiry event.
926 * There can be potential race conditions where the last associated
927 * STA may disconnect & before the host could clear the 'Indicate
928 * DTIM' request to the firmware, the firmware would have just
929 * indicated a DTIM expiry event. The race is between 'clear DTIM
930 * expiry cmd' going from the host to the firmware & the DTIM
931 * expiry event happening from the firmware to the host.
932 */
933 if (!ar->sta_list_index)
934 return;
935
936 spin_lock_bh(&ar->mcastpsq_lock);
937 mcastq_empty = skb_queue_empty(&ar->mcastpsq);
938 spin_unlock_bh(&ar->mcastpsq_lock);
939
940 if (mcastq_empty)
941 return;
942
943 /* set the STA flag to dtim_expired for the frame to go out */
944 set_bit(DTIM_EXPIRED, &vif->flags);
945
946 spin_lock_bh(&ar->mcastpsq_lock);
947 while ((skb = skb_dequeue(&ar->mcastpsq)) != NULL) {
948 spin_unlock_bh(&ar->mcastpsq_lock);
949
950 ath6kl_data_tx(skb, vif->ndev);
951
952 spin_lock_bh(&ar->mcastpsq_lock);
953 }
954 spin_unlock_bh(&ar->mcastpsq_lock);
955
956 clear_bit(DTIM_EXPIRED, &vif->flags);
957
958 /* clear the LSB of the BitMapCtl field of the TIM IE */
959 ath6kl_wmi_set_pvb_cmd(ar->wmi, vif->fw_vif_idx, MCAST_AID, 0);
960 }
961
962 void ath6kl_disconnect_event(struct ath6kl_vif *vif, u8 reason, u8 *bssid,
963 u8 assoc_resp_len, u8 *assoc_info,
964 u16 prot_reason_status)
965 {
966 struct ath6kl *ar = vif->ar;
967
968 if (vif->nw_type == AP_NETWORK) {
969 /* disconnect due to other STA vif switching channels */
970 if (reason == BSS_DISCONNECTED &&
971 prot_reason_status == WMI_AP_REASON_STA_ROAM) {
972 ar->want_ch_switch |= 1 << vif->fw_vif_idx;
973 /* bail back to this channel if STA vif fails connect */
974 ar->last_ch = le16_to_cpu(vif->profile.ch);
975 }
976
977 if (prot_reason_status == WMI_AP_REASON_MAX_STA) {
978 /* send max client reached notification to user space */
979 cfg80211_conn_failed(vif->ndev, bssid,
980 NL80211_CONN_FAIL_MAX_CLIENTS,
981 GFP_KERNEL);
982 }
983
984 if (prot_reason_status == WMI_AP_REASON_ACL) {
985 /* send blocked client notification to user space */
986 cfg80211_conn_failed(vif->ndev, bssid,
987 NL80211_CONN_FAIL_BLOCKED_CLIENT,
988 GFP_KERNEL);
989 }
990
991 if (!ath6kl_remove_sta(ar, bssid, prot_reason_status))
992 return;
993
994 /* if no more associated STAs, empty the mcast PS q */
995 if (ar->sta_list_index == 0) {
996 spin_lock_bh(&ar->mcastpsq_lock);
997 skb_queue_purge(&ar->mcastpsq);
998 spin_unlock_bh(&ar->mcastpsq_lock);
999
1000 /* clear the LSB of the TIM IE's BitMapCtl field */
1001 if (test_bit(WMI_READY, &ar->flag))
1002 ath6kl_wmi_set_pvb_cmd(ar->wmi, vif->fw_vif_idx,
1003 MCAST_AID, 0);
1004 }
1005
1006 if (!is_broadcast_ether_addr(bssid)) {
1007 /* send event to application */
1008 cfg80211_del_sta(vif->ndev, bssid, GFP_KERNEL);
1009 }
1010
1011 if (memcmp(vif->ndev->dev_addr, bssid, ETH_ALEN) == 0) {
1012 memset(vif->wep_key_list, 0, sizeof(vif->wep_key_list));
1013 clear_bit(CONNECTED, &vif->flags);
1014 }
1015 return;
1016 }
1017
1018 ath6kl_cfg80211_disconnect_event(vif, reason, bssid,
1019 assoc_resp_len, assoc_info,
1020 prot_reason_status);
1021
1022 aggr_reset_state(vif->aggr_cntxt->aggr_conn);
1023
1024 del_timer(&vif->disconnect_timer);
1025
1026 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "disconnect reason is %d\n", reason);
1027
1028 /*
1029 * If the event is due to disconnect cmd from the host, only they
1030 * the target would stop trying to connect. Under any other
1031 * condition, target would keep trying to connect.
1032 */
1033 if (reason == DISCONNECT_CMD) {
1034 if (!ar->usr_bss_filter && test_bit(WMI_READY, &ar->flag))
1035 ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx,
1036 NONE_BSS_FILTER, 0);
1037 } else {
1038 set_bit(CONNECT_PEND, &vif->flags);
1039 if (((reason == ASSOC_FAILED) &&
1040 (prot_reason_status == 0x11)) ||
1041 ((reason == ASSOC_FAILED) && (prot_reason_status == 0x0) &&
1042 (vif->reconnect_flag == 1))) {
1043 set_bit(CONNECTED, &vif->flags);
1044 return;
1045 }
1046 }
1047
1048 /* restart disconnected concurrent vifs waiting for new channel */
1049 ath6kl_check_ch_switch(ar, ar->last_ch);
1050
1051 /* update connect & link status atomically */
1052 spin_lock_bh(&vif->if_lock);
1053 clear_bit(CONNECTED, &vif->flags);
1054 netif_carrier_off(vif->ndev);
1055 spin_unlock_bh(&vif->if_lock);
1056
1057 if ((reason != CSERV_DISCONNECT) || (vif->reconnect_flag != 1))
1058 vif->reconnect_flag = 0;
1059
1060 if (reason != CSERV_DISCONNECT)
1061 ar->user_key_ctrl = 0;
1062
1063 netif_stop_queue(vif->ndev);
1064 memset(vif->bssid, 0, sizeof(vif->bssid));
1065 vif->bss_ch = 0;
1066
1067 ath6kl_tx_data_cleanup(ar);
1068 }
1069
1070 struct ath6kl_vif *ath6kl_vif_first(struct ath6kl *ar)
1071 {
1072 struct ath6kl_vif *vif;
1073
1074 spin_lock_bh(&ar->list_lock);
1075 if (list_empty(&ar->vif_list)) {
1076 spin_unlock_bh(&ar->list_lock);
1077 return NULL;
1078 }
1079
1080 vif = list_first_entry(&ar->vif_list, struct ath6kl_vif, list);
1081
1082 spin_unlock_bh(&ar->list_lock);
1083
1084 return vif;
1085 }
1086
1087 static int ath6kl_open(struct net_device *dev)
1088 {
1089 struct ath6kl_vif *vif = netdev_priv(dev);
1090
1091 set_bit(WLAN_ENABLED, &vif->flags);
1092
1093 if (test_bit(CONNECTED, &vif->flags)) {
1094 netif_carrier_on(dev);
1095 netif_wake_queue(dev);
1096 } else {
1097 netif_carrier_off(dev);
1098 }
1099
1100 return 0;
1101 }
1102
1103 static int ath6kl_close(struct net_device *dev)
1104 {
1105 struct ath6kl_vif *vif = netdev_priv(dev);
1106
1107 netif_stop_queue(dev);
1108
1109 ath6kl_cfg80211_stop(vif);
1110
1111 clear_bit(WLAN_ENABLED, &vif->flags);
1112
1113 return 0;
1114 }
1115
1116 static int ath6kl_set_features(struct net_device *dev,
1117 netdev_features_t features)
1118 {
1119 struct ath6kl_vif *vif = netdev_priv(dev);
1120 struct ath6kl *ar = vif->ar;
1121 int err = 0;
1122
1123 if ((features & NETIF_F_RXCSUM) &&
1124 (ar->rx_meta_ver != WMI_META_VERSION_2)) {
1125 ar->rx_meta_ver = WMI_META_VERSION_2;
1126 err = ath6kl_wmi_set_rx_frame_format_cmd(ar->wmi,
1127 vif->fw_vif_idx,
1128 ar->rx_meta_ver, 0, 0);
1129 if (err) {
1130 dev->features = features & ~NETIF_F_RXCSUM;
1131 return err;
1132 }
1133 } else if (!(features & NETIF_F_RXCSUM) &&
1134 (ar->rx_meta_ver == WMI_META_VERSION_2)) {
1135 ar->rx_meta_ver = 0;
1136 err = ath6kl_wmi_set_rx_frame_format_cmd(ar->wmi,
1137 vif->fw_vif_idx,
1138 ar->rx_meta_ver, 0, 0);
1139 if (err) {
1140 dev->features = features | NETIF_F_RXCSUM;
1141 return err;
1142 }
1143 }
1144
1145 return err;
1146 }
1147
1148 static void ath6kl_set_multicast_list(struct net_device *ndev)
1149 {
1150 struct ath6kl_vif *vif = netdev_priv(ndev);
1151 bool mc_all_on = false;
1152 int mc_count = netdev_mc_count(ndev);
1153 struct netdev_hw_addr *ha;
1154 bool found;
1155 struct ath6kl_mc_filter *mc_filter, *tmp;
1156 struct list_head mc_filter_new;
1157 int ret;
1158
1159 if (!test_bit(WMI_READY, &vif->ar->flag) ||
1160 !test_bit(WLAN_ENABLED, &vif->flags))
1161 return;
1162
1163 /* Enable multicast-all filter. */
1164 mc_all_on = !!(ndev->flags & IFF_PROMISC) ||
1165 !!(ndev->flags & IFF_ALLMULTI) ||
1166 !!(mc_count > ATH6K_MAX_MC_FILTERS_PER_LIST);
1167
1168 if (mc_all_on)
1169 set_bit(NETDEV_MCAST_ALL_ON, &vif->flags);
1170 else
1171 clear_bit(NETDEV_MCAST_ALL_ON, &vif->flags);
1172
1173 if (test_bit(ATH6KL_FW_CAPABILITY_WOW_MULTICAST_FILTER,
1174 vif->ar->fw_capabilities)) {
1175 mc_all_on = mc_all_on || (vif->ar->state == ATH6KL_STATE_ON);
1176 }
1177
1178 if (!(ndev->flags & IFF_MULTICAST)) {
1179 mc_all_on = false;
1180 set_bit(NETDEV_MCAST_ALL_OFF, &vif->flags);
1181 } else {
1182 clear_bit(NETDEV_MCAST_ALL_OFF, &vif->flags);
1183 }
1184
1185 /* Enable/disable "multicast-all" filter*/
1186 ath6kl_dbg(ATH6KL_DBG_TRC, "%s multicast-all filter\n",
1187 mc_all_on ? "enabling" : "disabling");
1188
1189 ret = ath6kl_wmi_mcast_filter_cmd(vif->ar->wmi, vif->fw_vif_idx,
1190 mc_all_on);
1191 if (ret) {
1192 ath6kl_warn("Failed to %s multicast-all receive\n",
1193 mc_all_on ? "enable" : "disable");
1194 return;
1195 }
1196
1197 if (test_bit(NETDEV_MCAST_ALL_ON, &vif->flags))
1198 return;
1199
1200 /* Keep the driver and firmware mcast list in sync. */
1201 list_for_each_entry_safe(mc_filter, tmp, &vif->mc_filter, list) {
1202 found = false;
1203 netdev_for_each_mc_addr(ha, ndev) {
1204 if (memcmp(ha->addr, mc_filter->hw_addr,
1205 ATH6KL_MCAST_FILTER_MAC_ADDR_SIZE) == 0) {
1206 found = true;
1207 break;
1208 }
1209 }
1210
1211 if (!found) {
1212 /*
1213 * Delete the filter which was previously set
1214 * but not in the new request.
1215 */
1216 ath6kl_dbg(ATH6KL_DBG_TRC,
1217 "Removing %pM from multicast filter\n",
1218 mc_filter->hw_addr);
1219 ret = ath6kl_wmi_add_del_mcast_filter_cmd(vif->ar->wmi,
1220 vif->fw_vif_idx, mc_filter->hw_addr,
1221 false);
1222 if (ret) {
1223 ath6kl_warn("Failed to remove multicast filter:%pM\n",
1224 mc_filter->hw_addr);
1225 return;
1226 }
1227
1228 list_del(&mc_filter->list);
1229 kfree(mc_filter);
1230 }
1231 }
1232
1233 INIT_LIST_HEAD(&mc_filter_new);
1234
1235 netdev_for_each_mc_addr(ha, ndev) {
1236 found = false;
1237 list_for_each_entry(mc_filter, &vif->mc_filter, list) {
1238 if (memcmp(ha->addr, mc_filter->hw_addr,
1239 ATH6KL_MCAST_FILTER_MAC_ADDR_SIZE) == 0) {
1240 found = true;
1241 break;
1242 }
1243 }
1244
1245 if (!found) {
1246 mc_filter = kzalloc(sizeof(struct ath6kl_mc_filter),
1247 GFP_ATOMIC);
1248 if (!mc_filter) {
1249 WARN_ON(1);
1250 goto out;
1251 }
1252
1253 memcpy(mc_filter->hw_addr, ha->addr,
1254 ATH6KL_MCAST_FILTER_MAC_ADDR_SIZE);
1255 /* Set the multicast filter */
1256 ath6kl_dbg(ATH6KL_DBG_TRC,
1257 "Adding %pM to multicast filter list\n",
1258 mc_filter->hw_addr);
1259 ret = ath6kl_wmi_add_del_mcast_filter_cmd(vif->ar->wmi,
1260 vif->fw_vif_idx, mc_filter->hw_addr,
1261 true);
1262 if (ret) {
1263 ath6kl_warn("Failed to add multicast filter :%pM\n",
1264 mc_filter->hw_addr);
1265 kfree(mc_filter);
1266 goto out;
1267 }
1268
1269 list_add_tail(&mc_filter->list, &mc_filter_new);
1270 }
1271 }
1272
1273 out:
1274 list_splice_tail(&mc_filter_new, &vif->mc_filter);
1275 }
1276
1277 static const struct net_device_ops ath6kl_netdev_ops = {
1278 .ndo_open = ath6kl_open,
1279 .ndo_stop = ath6kl_close,
1280 .ndo_start_xmit = ath6kl_data_tx,
1281 .ndo_set_features = ath6kl_set_features,
1282 .ndo_set_rx_mode = ath6kl_set_multicast_list,
1283 };
1284
1285 void init_netdev(struct net_device *dev)
1286 {
1287 struct ath6kl *ar = ath6kl_priv(dev);
1288
1289 dev->netdev_ops = &ath6kl_netdev_ops;
1290 dev->needs_free_netdev = true;
1291 dev->watchdog_timeo = ATH6KL_TX_TIMEOUT;
1292
1293 dev->needed_headroom = ETH_HLEN;
1294 dev->needed_headroom += roundup(sizeof(struct ath6kl_llc_snap_hdr) +
1295 sizeof(struct wmi_data_hdr) +
1296 HTC_HDR_LENGTH +
1297 WMI_MAX_TX_META_SZ +
1298 ATH6KL_HTC_ALIGN_BYTES, 4);
1299
1300 if (!test_bit(ATH6KL_FW_CAPABILITY_NO_IP_CHECKSUM,
1301 ar->fw_capabilities))
1302 dev->hw_features |= NETIF_F_IP_CSUM | NETIF_F_RXCSUM;
1303
1304 return;
1305 }
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