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Merge tag 'vfs-6.13-rc7.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
[J-linux.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, 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         ret = ath6kl_diag_read(ar, address, &debug_buf, sizeof(debug_buf));
307         if (ret)
308                 goto out;
309
310         loop = 100;
311
312         do {
313                 address = TARG_VTOP(ar->target_type,
314                                     le32_to_cpu(debug_buf.buffer_addr));
315                 length = le32_to_cpu(debug_buf.length);
316
317                 if (length != 0 && (le32_to_cpu(debug_buf.length) <=
318                                     le32_to_cpu(debug_buf.bufsize))) {
319                         length = ALIGN(length, 4);
320
321                         ret = ath6kl_diag_read(ar, address,
322                                                buf, length);
323                         if (ret)
324                                 goto out;
325
326                         ath6kl_debug_fwlog_event(ar, buf, length);
327                 }
328
329                 address = TARG_VTOP(ar->target_type,
330                                     le32_to_cpu(debug_buf.next));
331                 ret = ath6kl_diag_read(ar, address, &debug_buf,
332                                        sizeof(debug_buf));
333                 if (ret)
334                         goto out;
335
336                 loop--;
337
338                 if (WARN_ON(loop == 0)) {
339                         ret = -ETIMEDOUT;
340                         goto out;
341                 }
342         } while (address != firstbuf);
343
344 out:
345         kfree(buf);
346
347         return ret;
348 }
349
350 static void ath6kl_install_static_wep_keys(struct ath6kl_vif *vif)
351 {
352         u8 index;
353         u8 keyusage;
354
355         for (index = 0; index <= WMI_MAX_KEY_INDEX; index++) {
356                 if (vif->wep_key_list[index].key_len) {
357                         keyusage = GROUP_USAGE;
358                         if (index == vif->def_txkey_index)
359                                 keyusage |= TX_USAGE;
360
361                         ath6kl_wmi_addkey_cmd(vif->ar->wmi, vif->fw_vif_idx,
362                                               index,
363                                               WEP_CRYPT,
364                                               keyusage,
365                                               vif->wep_key_list[index].key_len,
366                                               NULL, 0,
367                                               vif->wep_key_list[index].key,
368                                               KEY_OP_INIT_VAL, NULL,
369                                               NO_SYNC_WMIFLAG);
370                 }
371         }
372 }
373
374 void ath6kl_connect_ap_mode_bss(struct ath6kl_vif *vif, u16 channel)
375 {
376         struct ath6kl *ar = vif->ar;
377         struct ath6kl_req_key *ik;
378         int res;
379         u8 key_rsc[ATH6KL_KEY_SEQ_LEN];
380
381         ik = &ar->ap_mode_bkey;
382
383         ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "AP mode started on %u MHz\n", channel);
384
385         switch (vif->auth_mode) {
386         case NONE_AUTH:
387                 if (vif->prwise_crypto == WEP_CRYPT)
388                         ath6kl_install_static_wep_keys(vif);
389                 if (!ik->valid || ik->key_type != WAPI_CRYPT)
390                         break;
391                 /* for WAPI, we need to set the delayed group key, continue: */
392                 fallthrough;
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 (aid < 1 || aid > AP_MAX_NUM_STA)
434                 return;
435
436         if (assoc_req_len > sizeof(struct ieee80211_hdr_3addr)) {
437                 struct ieee80211_mgmt *mgmt =
438                         (struct ieee80211_mgmt *) assoc_info;
439                 if (ieee80211_is_assoc_req(mgmt->frame_control) &&
440                     assoc_req_len >= sizeof(struct ieee80211_hdr_3addr) +
441                     sizeof(mgmt->u.assoc_req)) {
442                         ies = mgmt->u.assoc_req.variable;
443                         ies_len = assoc_info + assoc_req_len - ies;
444                 } else if (ieee80211_is_reassoc_req(mgmt->frame_control) &&
445                            assoc_req_len >= sizeof(struct ieee80211_hdr_3addr)
446                            + sizeof(mgmt->u.reassoc_req)) {
447                         ies = mgmt->u.reassoc_req.variable;
448                         ies_len = assoc_info + assoc_req_len - ies;
449                 }
450         }
451
452         pos = ies;
453         while (pos && pos + 1 < ies + ies_len) {
454                 if (pos + 2 + pos[1] > ies + ies_len)
455                         break;
456                 if (pos[0] == WLAN_EID_RSN)
457                         wpa_ie = pos; /* RSN IE */
458                 else if (pos[0] == WLAN_EID_VENDOR_SPECIFIC &&
459                          pos[1] >= 4 &&
460                          pos[2] == 0x00 && pos[3] == 0x50 && pos[4] == 0xf2) {
461                         if (pos[5] == 0x01)
462                                 wpa_ie = pos; /* WPA IE */
463                         else if (pos[5] == 0x04) {
464                                 wpa_ie = pos; /* WPS IE */
465                                 break; /* overrides WPA/RSN IE */
466                         }
467                 } else if (pos[0] == 0x44 && wpa_ie == NULL) {
468                         /*
469                          * Note: WAPI Parameter Set IE re-uses Element ID that
470                          * was officially allocated for BSS AC Access Delay. As
471                          * such, we need to be a bit more careful on when
472                          * parsing the frame. However, BSS AC Access Delay
473                          * element is not supposed to be included in
474                          * (Re)Association Request frames, so this should not
475                          * cause problems.
476                          */
477                         wpa_ie = pos; /* WAPI IE */
478                         break;
479                 }
480                 pos += 2 + pos[1];
481         }
482
483         ath6kl_add_new_sta(vif, mac_addr, aid, wpa_ie,
484                            wpa_ie ? 2 + wpa_ie[1] : 0,
485                            keymgmt, ucipher, auth, apsd_info);
486
487         /* send event to application */
488         sinfo = kzalloc(sizeof(*sinfo), GFP_KERNEL);
489         if (!sinfo)
490                 return;
491
492         /* TODO: sinfo.generation */
493
494         sinfo->assoc_req_ies = ies;
495         sinfo->assoc_req_ies_len = ies_len;
496
497         cfg80211_new_sta(vif->ndev, mac_addr, sinfo, GFP_KERNEL);
498
499         netif_wake_queue(vif->ndev);
500
501         kfree(sinfo);
502 }
503
504 void disconnect_timer_handler(struct timer_list *t)
505 {
506         struct ath6kl_vif *vif = from_timer(vif, t, disconnect_timer);
507
508         ath6kl_init_profile_info(vif);
509         ath6kl_disconnect(vif);
510 }
511
512 void ath6kl_disconnect(struct ath6kl_vif *vif)
513 {
514         if (test_bit(CONNECTED, &vif->flags) ||
515             test_bit(CONNECT_PEND, &vif->flags)) {
516                 ath6kl_wmi_disconnect_cmd(vif->ar->wmi, vif->fw_vif_idx);
517                 /*
518                  * Disconnect command is issued, clear the connect pending
519                  * flag. The connected flag will be cleared in
520                  * disconnect event notification.
521                  */
522                 clear_bit(CONNECT_PEND, &vif->flags);
523         }
524 }
525
526 /* WMI Event handlers */
527
528 void ath6kl_ready_event(void *devt, u8 *datap, u32 sw_ver, u32 abi_ver,
529                         enum wmi_phy_cap cap)
530 {
531         struct ath6kl *ar = devt;
532
533         memcpy(ar->mac_addr, datap, ETH_ALEN);
534
535         ath6kl_dbg(ATH6KL_DBG_BOOT,
536                    "ready event mac addr %pM sw_ver 0x%x abi_ver 0x%x cap 0x%x\n",
537                    ar->mac_addr, sw_ver, abi_ver, cap);
538
539         ar->version.wlan_ver = sw_ver;
540         ar->version.abi_ver = abi_ver;
541         ar->hw.cap = cap;
542
543         if (strlen(ar->wiphy->fw_version) == 0) {
544                 snprintf(ar->wiphy->fw_version,
545                          sizeof(ar->wiphy->fw_version),
546                          "%u.%u.%u.%u",
547                          (ar->version.wlan_ver & 0xf0000000) >> 28,
548                          (ar->version.wlan_ver & 0x0f000000) >> 24,
549                          (ar->version.wlan_ver & 0x00ff0000) >> 16,
550                          (ar->version.wlan_ver & 0x0000ffff));
551         }
552
553         /* indicate to the waiting thread that the ready event was received */
554         set_bit(WMI_READY, &ar->flag);
555         wake_up(&ar->event_wq);
556 }
557
558 void ath6kl_scan_complete_evt(struct ath6kl_vif *vif, int status)
559 {
560         struct ath6kl *ar = vif->ar;
561         bool aborted = false;
562
563         if (status != WMI_SCAN_STATUS_SUCCESS)
564                 aborted = true;
565
566         ath6kl_cfg80211_scan_complete_event(vif, aborted);
567
568         if (!ar->usr_bss_filter) {
569                 clear_bit(CLEAR_BSSFILTER_ON_BEACON, &vif->flags);
570                 ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx,
571                                          NONE_BSS_FILTER, 0);
572         }
573
574         ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "scan complete: %d\n", status);
575 }
576
577 static int ath6kl_commit_ch_switch(struct ath6kl_vif *vif, u16 channel)
578 {
579         struct ath6kl *ar = vif->ar;
580
581         vif->profile.ch = cpu_to_le16(channel);
582
583         switch (vif->nw_type) {
584         case AP_NETWORK:
585                 /*
586                  * reconfigure any saved RSN IE capabilites in the beacon /
587                  * probe response to stay in sync with the supplicant.
588                  */
589                 if (vif->rsn_capab &&
590                     test_bit(ATH6KL_FW_CAPABILITY_RSN_CAP_OVERRIDE,
591                              ar->fw_capabilities))
592                         ath6kl_wmi_set_ie_cmd(ar->wmi, vif->fw_vif_idx,
593                                               WLAN_EID_RSN, WMI_RSN_IE_CAPB,
594                                               (const u8 *) &vif->rsn_capab,
595                                               sizeof(vif->rsn_capab));
596
597                 return ath6kl_wmi_ap_profile_commit(ar->wmi, vif->fw_vif_idx,
598                                                     &vif->profile);
599         default:
600                 ath6kl_err("won't switch channels nw_type=%d\n", vif->nw_type);
601                 return -ENOTSUPP;
602         }
603 }
604
605 static void ath6kl_check_ch_switch(struct ath6kl *ar, u16 channel)
606 {
607         struct ath6kl_vif *vif;
608         int res = 0;
609
610         if (!ar->want_ch_switch)
611                 return;
612
613         spin_lock_bh(&ar->list_lock);
614         list_for_each_entry(vif, &ar->vif_list, list) {
615                 if (ar->want_ch_switch & (1 << vif->fw_vif_idx))
616                         res = ath6kl_commit_ch_switch(vif, channel);
617
618                 /* if channel switch failed, oh well we tried */
619                 ar->want_ch_switch &= ~(1 << vif->fw_vif_idx);
620
621                 if (res)
622                         ath6kl_err("channel switch failed nw_type %d res %d\n",
623                                    vif->nw_type, res);
624         }
625         spin_unlock_bh(&ar->list_lock);
626 }
627
628 void ath6kl_connect_event(struct ath6kl_vif *vif, u16 channel, u8 *bssid,
629                           u16 listen_int, u16 beacon_int,
630                           enum network_type net_type, u8 beacon_ie_len,
631                           u8 assoc_req_len, u8 assoc_resp_len,
632                           u8 *assoc_info)
633 {
634         struct ath6kl *ar = vif->ar;
635
636         ath6kl_cfg80211_connect_event(vif, channel, bssid,
637                                       listen_int, beacon_int,
638                                       net_type, beacon_ie_len,
639                                       assoc_req_len, assoc_resp_len,
640                                       assoc_info);
641
642         memcpy(vif->bssid, bssid, sizeof(vif->bssid));
643         vif->bss_ch = channel;
644
645         if (vif->nw_type == INFRA_NETWORK) {
646                 ath6kl_wmi_listeninterval_cmd(ar->wmi, vif->fw_vif_idx,
647                                               vif->listen_intvl_t, 0);
648                 ath6kl_check_ch_switch(ar, channel);
649         }
650
651         netif_wake_queue(vif->ndev);
652
653         /* Update connect & link status atomically */
654         spin_lock_bh(&vif->if_lock);
655         set_bit(CONNECTED, &vif->flags);
656         clear_bit(CONNECT_PEND, &vif->flags);
657         netif_carrier_on(vif->ndev);
658         spin_unlock_bh(&vif->if_lock);
659
660         aggr_reset_state(vif->aggr_cntxt->aggr_conn);
661         vif->reconnect_flag = 0;
662
663         if ((vif->nw_type == ADHOC_NETWORK) && ar->ibss_ps_enable) {
664                 memset(ar->node_map, 0, sizeof(ar->node_map));
665                 ar->node_num = 0;
666                 ar->next_ep_id = ENDPOINT_2;
667         }
668
669         if (!ar->usr_bss_filter) {
670                 set_bit(CLEAR_BSSFILTER_ON_BEACON, &vif->flags);
671                 ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx,
672                                          CURRENT_BSS_FILTER, 0);
673         }
674 }
675
676 void ath6kl_tkip_micerr_event(struct ath6kl_vif *vif, u8 keyid, bool ismcast)
677 {
678         struct ath6kl_sta *sta;
679         struct ath6kl *ar = vif->ar;
680         u8 tsc[6];
681
682         /*
683          * For AP case, keyid will have aid of STA which sent pkt with
684          * MIC error. Use this aid to get MAC & send it to hostapd.
685          */
686         if (vif->nw_type == AP_NETWORK) {
687                 sta = ath6kl_find_sta_by_aid(ar, (keyid >> 2));
688                 if (!sta)
689                         return;
690
691                 ath6kl_dbg(ATH6KL_DBG_TRC,
692                            "ap tkip mic error received from aid=%d\n", keyid);
693
694                 memset(tsc, 0, sizeof(tsc)); /* FIX: get correct TSC */
695                 cfg80211_michael_mic_failure(vif->ndev, sta->mac,
696                                              NL80211_KEYTYPE_PAIRWISE, keyid,
697                                              tsc, GFP_KERNEL);
698         } else {
699                 ath6kl_cfg80211_tkip_micerr_event(vif, keyid, ismcast);
700         }
701 }
702
703 static void ath6kl_update_target_stats(struct ath6kl_vif *vif, u8 *ptr, u32 len)
704 {
705         struct wmi_target_stats *tgt_stats =
706                 (struct wmi_target_stats *) ptr;
707         struct ath6kl *ar = vif->ar;
708         struct target_stats *stats = &vif->target_stats;
709         struct tkip_ccmp_stats *ccmp_stats;
710         s32 rate;
711         u8 ac;
712
713         if (len < sizeof(*tgt_stats))
714                 return;
715
716         ath6kl_dbg(ATH6KL_DBG_TRC, "updating target stats\n");
717
718         stats->tx_pkt += le32_to_cpu(tgt_stats->stats.tx.pkt);
719         stats->tx_byte += le32_to_cpu(tgt_stats->stats.tx.byte);
720         stats->tx_ucast_pkt += le32_to_cpu(tgt_stats->stats.tx.ucast_pkt);
721         stats->tx_ucast_byte += le32_to_cpu(tgt_stats->stats.tx.ucast_byte);
722         stats->tx_mcast_pkt += le32_to_cpu(tgt_stats->stats.tx.mcast_pkt);
723         stats->tx_mcast_byte += le32_to_cpu(tgt_stats->stats.tx.mcast_byte);
724         stats->tx_bcast_pkt  += le32_to_cpu(tgt_stats->stats.tx.bcast_pkt);
725         stats->tx_bcast_byte += le32_to_cpu(tgt_stats->stats.tx.bcast_byte);
726         stats->tx_rts_success_cnt +=
727                 le32_to_cpu(tgt_stats->stats.tx.rts_success_cnt);
728
729         for (ac = 0; ac < WMM_NUM_AC; ac++)
730                 stats->tx_pkt_per_ac[ac] +=
731                         le32_to_cpu(tgt_stats->stats.tx.pkt_per_ac[ac]);
732
733         stats->tx_err += le32_to_cpu(tgt_stats->stats.tx.err);
734         stats->tx_fail_cnt += le32_to_cpu(tgt_stats->stats.tx.fail_cnt);
735         stats->tx_retry_cnt += le32_to_cpu(tgt_stats->stats.tx.retry_cnt);
736         stats->tx_mult_retry_cnt +=
737                 le32_to_cpu(tgt_stats->stats.tx.mult_retry_cnt);
738         stats->tx_rts_fail_cnt +=
739                 le32_to_cpu(tgt_stats->stats.tx.rts_fail_cnt);
740
741         rate = a_sle32_to_cpu(tgt_stats->stats.tx.ucast_rate);
742         stats->tx_ucast_rate = ath6kl_wmi_get_rate(ar->wmi, rate);
743
744         stats->rx_pkt += le32_to_cpu(tgt_stats->stats.rx.pkt);
745         stats->rx_byte += le32_to_cpu(tgt_stats->stats.rx.byte);
746         stats->rx_ucast_pkt += le32_to_cpu(tgt_stats->stats.rx.ucast_pkt);
747         stats->rx_ucast_byte += le32_to_cpu(tgt_stats->stats.rx.ucast_byte);
748         stats->rx_mcast_pkt += le32_to_cpu(tgt_stats->stats.rx.mcast_pkt);
749         stats->rx_mcast_byte += le32_to_cpu(tgt_stats->stats.rx.mcast_byte);
750         stats->rx_bcast_pkt += le32_to_cpu(tgt_stats->stats.rx.bcast_pkt);
751         stats->rx_bcast_byte += le32_to_cpu(tgt_stats->stats.rx.bcast_byte);
752         stats->rx_frgment_pkt += le32_to_cpu(tgt_stats->stats.rx.frgment_pkt);
753         stats->rx_err += le32_to_cpu(tgt_stats->stats.rx.err);
754         stats->rx_crc_err += le32_to_cpu(tgt_stats->stats.rx.crc_err);
755         stats->rx_key_cache_miss +=
756                 le32_to_cpu(tgt_stats->stats.rx.key_cache_miss);
757         stats->rx_decrypt_err += le32_to_cpu(tgt_stats->stats.rx.decrypt_err);
758         stats->rx_dupl_frame += le32_to_cpu(tgt_stats->stats.rx.dupl_frame);
759
760         rate = a_sle32_to_cpu(tgt_stats->stats.rx.ucast_rate);
761         stats->rx_ucast_rate = ath6kl_wmi_get_rate(ar->wmi, rate);
762
763         ccmp_stats = &tgt_stats->stats.tkip_ccmp_stats;
764
765         stats->tkip_local_mic_fail +=
766                 le32_to_cpu(ccmp_stats->tkip_local_mic_fail);
767         stats->tkip_cnter_measures_invoked +=
768                 le32_to_cpu(ccmp_stats->tkip_cnter_measures_invoked);
769         stats->tkip_fmt_err += le32_to_cpu(ccmp_stats->tkip_fmt_err);
770
771         stats->ccmp_fmt_err += le32_to_cpu(ccmp_stats->ccmp_fmt_err);
772         stats->ccmp_replays += le32_to_cpu(ccmp_stats->ccmp_replays);
773
774         stats->pwr_save_fail_cnt +=
775                 le32_to_cpu(tgt_stats->pm_stats.pwr_save_failure_cnt);
776         stats->noise_floor_calib =
777                 a_sle32_to_cpu(tgt_stats->noise_floor_calib);
778
779         stats->cs_bmiss_cnt +=
780                 le32_to_cpu(tgt_stats->cserv_stats.cs_bmiss_cnt);
781         stats->cs_low_rssi_cnt +=
782                 le32_to_cpu(tgt_stats->cserv_stats.cs_low_rssi_cnt);
783         stats->cs_connect_cnt +=
784                 le16_to_cpu(tgt_stats->cserv_stats.cs_connect_cnt);
785         stats->cs_discon_cnt +=
786                 le16_to_cpu(tgt_stats->cserv_stats.cs_discon_cnt);
787
788         stats->cs_ave_beacon_rssi =
789                 a_sle16_to_cpu(tgt_stats->cserv_stats.cs_ave_beacon_rssi);
790
791         stats->cs_last_roam_msec =
792                 tgt_stats->cserv_stats.cs_last_roam_msec;
793         stats->cs_snr = tgt_stats->cserv_stats.cs_snr;
794         stats->cs_rssi = a_sle16_to_cpu(tgt_stats->cserv_stats.cs_rssi);
795
796         stats->lq_val = le32_to_cpu(tgt_stats->lq_val);
797
798         stats->wow_pkt_dropped +=
799                 le32_to_cpu(tgt_stats->wow_stats.wow_pkt_dropped);
800         stats->wow_host_pkt_wakeups +=
801                 tgt_stats->wow_stats.wow_host_pkt_wakeups;
802         stats->wow_host_evt_wakeups +=
803                 tgt_stats->wow_stats.wow_host_evt_wakeups;
804         stats->wow_evt_discarded +=
805                 le16_to_cpu(tgt_stats->wow_stats.wow_evt_discarded);
806
807         stats->arp_received = le32_to_cpu(tgt_stats->arp_stats.arp_received);
808         stats->arp_replied = le32_to_cpu(tgt_stats->arp_stats.arp_replied);
809         stats->arp_matched = le32_to_cpu(tgt_stats->arp_stats.arp_matched);
810
811         if (test_bit(STATS_UPDATE_PEND, &vif->flags)) {
812                 clear_bit(STATS_UPDATE_PEND, &vif->flags);
813                 wake_up(&ar->event_wq);
814         }
815 }
816
817 static void ath6kl_add_le32(__le32 *var, __le32 val)
818 {
819         *var = cpu_to_le32(le32_to_cpu(*var) + le32_to_cpu(val));
820 }
821
822 void ath6kl_tgt_stats_event(struct ath6kl_vif *vif, u8 *ptr, u32 len)
823 {
824         struct wmi_ap_mode_stat *p = (struct wmi_ap_mode_stat *) ptr;
825         struct ath6kl *ar = vif->ar;
826         struct wmi_ap_mode_stat *ap = &ar->ap_stats;
827         struct wmi_per_sta_stat *st_ap, *st_p;
828         u8 ac;
829
830         if (vif->nw_type == AP_NETWORK) {
831                 if (len < sizeof(*p))
832                         return;
833
834                 for (ac = 0; ac < AP_MAX_NUM_STA; ac++) {
835                         st_ap = &ap->sta[ac];
836                         st_p = &p->sta[ac];
837
838                         ath6kl_add_le32(&st_ap->tx_bytes, st_p->tx_bytes);
839                         ath6kl_add_le32(&st_ap->tx_pkts, st_p->tx_pkts);
840                         ath6kl_add_le32(&st_ap->tx_error, st_p->tx_error);
841                         ath6kl_add_le32(&st_ap->tx_discard, st_p->tx_discard);
842                         ath6kl_add_le32(&st_ap->rx_bytes, st_p->rx_bytes);
843                         ath6kl_add_le32(&st_ap->rx_pkts, st_p->rx_pkts);
844                         ath6kl_add_le32(&st_ap->rx_error, st_p->rx_error);
845                         ath6kl_add_le32(&st_ap->rx_discard, st_p->rx_discard);
846                 }
847
848         } else {
849                 ath6kl_update_target_stats(vif, ptr, len);
850         }
851 }
852
853 void ath6kl_wakeup_event(void *dev)
854 {
855         struct ath6kl *ar = dev;
856
857         wake_up(&ar->event_wq);
858 }
859
860 void ath6kl_txpwr_rx_evt(void *devt, u8 tx_pwr)
861 {
862         struct ath6kl *ar = devt;
863
864         ar->tx_pwr = tx_pwr;
865         wake_up(&ar->event_wq);
866 }
867
868 void ath6kl_pspoll_event(struct ath6kl_vif *vif, u8 aid)
869 {
870         struct ath6kl_sta *conn;
871         struct sk_buff *skb;
872         bool psq_empty = false;
873         struct ath6kl *ar = vif->ar;
874         struct ath6kl_mgmt_buff *mgmt_buf;
875
876         conn = ath6kl_find_sta_by_aid(ar, aid);
877
878         if (!conn)
879                 return;
880         /*
881          * Send out a packet queued on ps queue. When the ps queue
882          * becomes empty update the PVB for this station.
883          */
884         spin_lock_bh(&conn->psq_lock);
885         psq_empty  = skb_queue_empty(&conn->psq) && (conn->mgmt_psq_len == 0);
886         spin_unlock_bh(&conn->psq_lock);
887
888         if (psq_empty)
889                 /* TODO: Send out a NULL data frame */
890                 return;
891
892         spin_lock_bh(&conn->psq_lock);
893         if (conn->mgmt_psq_len > 0) {
894                 mgmt_buf = list_first_entry(&conn->mgmt_psq,
895                                         struct ath6kl_mgmt_buff, list);
896                 list_del(&mgmt_buf->list);
897                 conn->mgmt_psq_len--;
898                 spin_unlock_bh(&conn->psq_lock);
899
900                 conn->sta_flags |= STA_PS_POLLED;
901                 ath6kl_wmi_send_mgmt_cmd(ar->wmi, vif->fw_vif_idx,
902                                          mgmt_buf->id, mgmt_buf->freq,
903                                          mgmt_buf->wait, mgmt_buf->buf,
904                                          mgmt_buf->len, mgmt_buf->no_cck);
905                 conn->sta_flags &= ~STA_PS_POLLED;
906                 kfree(mgmt_buf);
907         } else {
908                 skb = skb_dequeue(&conn->psq);
909                 spin_unlock_bh(&conn->psq_lock);
910
911                 conn->sta_flags |= STA_PS_POLLED;
912                 ath6kl_data_tx(skb, vif->ndev);
913                 conn->sta_flags &= ~STA_PS_POLLED;
914         }
915
916         spin_lock_bh(&conn->psq_lock);
917         psq_empty  = skb_queue_empty(&conn->psq) && (conn->mgmt_psq_len == 0);
918         spin_unlock_bh(&conn->psq_lock);
919
920         if (psq_empty)
921                 ath6kl_wmi_set_pvb_cmd(ar->wmi, vif->fw_vif_idx, conn->aid, 0);
922 }
923
924 void ath6kl_dtimexpiry_event(struct ath6kl_vif *vif)
925 {
926         bool mcastq_empty = false;
927         struct sk_buff *skb;
928         struct ath6kl *ar = vif->ar;
929
930         /*
931          * If there are no associated STAs, ignore the DTIM expiry event.
932          * There can be potential race conditions where the last associated
933          * STA may disconnect & before the host could clear the 'Indicate
934          * DTIM' request to the firmware, the firmware would have just
935          * indicated a DTIM expiry event. The race is between 'clear DTIM
936          * expiry cmd' going from the host to the firmware & the DTIM
937          * expiry event happening from the firmware to the host.
938          */
939         if (!ar->sta_list_index)
940                 return;
941
942         spin_lock_bh(&ar->mcastpsq_lock);
943         mcastq_empty = skb_queue_empty(&ar->mcastpsq);
944         spin_unlock_bh(&ar->mcastpsq_lock);
945
946         if (mcastq_empty)
947                 return;
948
949         /* set the STA flag to dtim_expired for the frame to go out */
950         set_bit(DTIM_EXPIRED, &vif->flags);
951
952         spin_lock_bh(&ar->mcastpsq_lock);
953         while ((skb = skb_dequeue(&ar->mcastpsq)) != NULL) {
954                 spin_unlock_bh(&ar->mcastpsq_lock);
955
956                 ath6kl_data_tx(skb, vif->ndev);
957
958                 spin_lock_bh(&ar->mcastpsq_lock);
959         }
960         spin_unlock_bh(&ar->mcastpsq_lock);
961
962         clear_bit(DTIM_EXPIRED, &vif->flags);
963
964         /* clear the LSB of the BitMapCtl field of the TIM IE */
965         ath6kl_wmi_set_pvb_cmd(ar->wmi, vif->fw_vif_idx, MCAST_AID, 0);
966 }
967
968 void ath6kl_disconnect_event(struct ath6kl_vif *vif, u8 reason, u8 *bssid,
969                              u8 assoc_resp_len, u8 *assoc_info,
970                              u16 prot_reason_status)
971 {
972         struct ath6kl *ar = vif->ar;
973
974         if (vif->nw_type == AP_NETWORK) {
975                 /* disconnect due to other STA vif switching channels */
976                 if (reason == BSS_DISCONNECTED &&
977                     prot_reason_status == WMI_AP_REASON_STA_ROAM) {
978                         ar->want_ch_switch |= 1 << vif->fw_vif_idx;
979                         /* bail back to this channel if STA vif fails connect */
980                         ar->last_ch = le16_to_cpu(vif->profile.ch);
981                 }
982
983                 if (prot_reason_status == WMI_AP_REASON_MAX_STA) {
984                         /* send max client reached notification to user space */
985                         cfg80211_conn_failed(vif->ndev, bssid,
986                                              NL80211_CONN_FAIL_MAX_CLIENTS,
987                                              GFP_KERNEL);
988                 }
989
990                 if (prot_reason_status == WMI_AP_REASON_ACL) {
991                         /* send blocked client notification to user space */
992                         cfg80211_conn_failed(vif->ndev, bssid,
993                                              NL80211_CONN_FAIL_BLOCKED_CLIENT,
994                                              GFP_KERNEL);
995                 }
996
997                 if (!ath6kl_remove_sta(ar, bssid, prot_reason_status))
998                         return;
999
1000                 /* if no more associated STAs, empty the mcast PS q */
1001                 if (ar->sta_list_index == 0) {
1002                         spin_lock_bh(&ar->mcastpsq_lock);
1003                         skb_queue_purge(&ar->mcastpsq);
1004                         spin_unlock_bh(&ar->mcastpsq_lock);
1005
1006                         /* clear the LSB of the TIM IE's BitMapCtl field */
1007                         if (test_bit(WMI_READY, &ar->flag))
1008                                 ath6kl_wmi_set_pvb_cmd(ar->wmi, vif->fw_vif_idx,
1009                                                        MCAST_AID, 0);
1010                 }
1011
1012                 if (!is_broadcast_ether_addr(bssid)) {
1013                         /* send event to application */
1014                         cfg80211_del_sta(vif->ndev, bssid, GFP_KERNEL);
1015                 }
1016
1017                 if (memcmp(vif->ndev->dev_addr, bssid, ETH_ALEN) == 0) {
1018                         memset(vif->wep_key_list, 0, sizeof(vif->wep_key_list));
1019                         clear_bit(CONNECTED, &vif->flags);
1020                 }
1021                 return;
1022         }
1023
1024         ath6kl_cfg80211_disconnect_event(vif, reason, bssid,
1025                                          assoc_resp_len, assoc_info,
1026                                          prot_reason_status);
1027
1028         aggr_reset_state(vif->aggr_cntxt->aggr_conn);
1029
1030         del_timer(&vif->disconnect_timer);
1031
1032         ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "disconnect reason is %d\n", reason);
1033
1034         /*
1035          * If the event is due to disconnect cmd from the host, only they
1036          * the target would stop trying to connect. Under any other
1037          * condition, target would keep trying to connect.
1038          */
1039         if (reason == DISCONNECT_CMD) {
1040                 if (!ar->usr_bss_filter && test_bit(WMI_READY, &ar->flag))
1041                         ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx,
1042                                                  NONE_BSS_FILTER, 0);
1043         } else {
1044                 set_bit(CONNECT_PEND, &vif->flags);
1045                 if (((reason == ASSOC_FAILED) &&
1046                      (prot_reason_status == 0x11)) ||
1047                     ((reason == ASSOC_FAILED) && (prot_reason_status == 0x0) &&
1048                      (vif->reconnect_flag == 1))) {
1049                         set_bit(CONNECTED, &vif->flags);
1050                         return;
1051                 }
1052         }
1053
1054         /* restart disconnected concurrent vifs waiting for new channel */
1055         ath6kl_check_ch_switch(ar, ar->last_ch);
1056
1057         /* update connect & link status atomically */
1058         spin_lock_bh(&vif->if_lock);
1059         clear_bit(CONNECTED, &vif->flags);
1060         netif_carrier_off(vif->ndev);
1061         spin_unlock_bh(&vif->if_lock);
1062
1063         if ((reason != CSERV_DISCONNECT) || (vif->reconnect_flag != 1))
1064                 vif->reconnect_flag = 0;
1065
1066         if (reason != CSERV_DISCONNECT)
1067                 ar->user_key_ctrl = 0;
1068
1069         netif_stop_queue(vif->ndev);
1070         memset(vif->bssid, 0, sizeof(vif->bssid));
1071         vif->bss_ch = 0;
1072
1073         ath6kl_tx_data_cleanup(ar);
1074 }
1075
1076 struct ath6kl_vif *ath6kl_vif_first(struct ath6kl *ar)
1077 {
1078         struct ath6kl_vif *vif;
1079
1080         spin_lock_bh(&ar->list_lock);
1081         if (list_empty(&ar->vif_list)) {
1082                 spin_unlock_bh(&ar->list_lock);
1083                 return NULL;
1084         }
1085
1086         vif = list_first_entry(&ar->vif_list, struct ath6kl_vif, list);
1087
1088         spin_unlock_bh(&ar->list_lock);
1089
1090         return vif;
1091 }
1092
1093 static int ath6kl_open(struct net_device *dev)
1094 {
1095         struct ath6kl_vif *vif = netdev_priv(dev);
1096
1097         set_bit(WLAN_ENABLED, &vif->flags);
1098
1099         if (test_bit(CONNECTED, &vif->flags)) {
1100                 netif_carrier_on(dev);
1101                 netif_wake_queue(dev);
1102         } else {
1103                 netif_carrier_off(dev);
1104         }
1105
1106         return 0;
1107 }
1108
1109 static int ath6kl_close(struct net_device *dev)
1110 {
1111         struct ath6kl_vif *vif = netdev_priv(dev);
1112
1113         netif_stop_queue(dev);
1114
1115         ath6kl_cfg80211_stop(vif);
1116
1117         clear_bit(WLAN_ENABLED, &vif->flags);
1118
1119         return 0;
1120 }
1121
1122 static int ath6kl_set_features(struct net_device *dev,
1123                                netdev_features_t features)
1124 {
1125         struct ath6kl_vif *vif = netdev_priv(dev);
1126         struct ath6kl *ar = vif->ar;
1127         int err = 0;
1128
1129         if ((features & NETIF_F_RXCSUM) &&
1130             (ar->rx_meta_ver != WMI_META_VERSION_2)) {
1131                 ar->rx_meta_ver = WMI_META_VERSION_2;
1132                 err = ath6kl_wmi_set_rx_frame_format_cmd(ar->wmi,
1133                                                          vif->fw_vif_idx,
1134                                                          ar->rx_meta_ver, 0, 0);
1135                 if (err) {
1136                         dev->features = features & ~NETIF_F_RXCSUM;
1137                         return err;
1138                 }
1139         } else if (!(features & NETIF_F_RXCSUM) &&
1140                    (ar->rx_meta_ver == WMI_META_VERSION_2)) {
1141                 ar->rx_meta_ver = 0;
1142                 err = ath6kl_wmi_set_rx_frame_format_cmd(ar->wmi,
1143                                                          vif->fw_vif_idx,
1144                                                          ar->rx_meta_ver, 0, 0);
1145                 if (err) {
1146                         dev->features = features | NETIF_F_RXCSUM;
1147                         return err;
1148                 }
1149         }
1150
1151         return err;
1152 }
1153
1154 static void ath6kl_set_multicast_list(struct net_device *ndev)
1155 {
1156         struct ath6kl_vif *vif = netdev_priv(ndev);
1157         bool mc_all_on = false;
1158         int mc_count = netdev_mc_count(ndev);
1159         struct netdev_hw_addr *ha;
1160         bool found;
1161         struct ath6kl_mc_filter *mc_filter, *tmp;
1162         struct list_head mc_filter_new;
1163         int ret;
1164
1165         if (!test_bit(WMI_READY, &vif->ar->flag) ||
1166             !test_bit(WLAN_ENABLED, &vif->flags))
1167                 return;
1168
1169         /* Enable multicast-all filter. */
1170         mc_all_on = !!(ndev->flags & IFF_PROMISC) ||
1171                     !!(ndev->flags & IFF_ALLMULTI) ||
1172                     !!(mc_count > ATH6K_MAX_MC_FILTERS_PER_LIST);
1173
1174         if (mc_all_on)
1175                 set_bit(NETDEV_MCAST_ALL_ON, &vif->flags);
1176         else
1177                 clear_bit(NETDEV_MCAST_ALL_ON, &vif->flags);
1178
1179         if (test_bit(ATH6KL_FW_CAPABILITY_WOW_MULTICAST_FILTER,
1180                      vif->ar->fw_capabilities)) {
1181                 mc_all_on = mc_all_on || (vif->ar->state == ATH6KL_STATE_ON);
1182         }
1183
1184         if (!(ndev->flags & IFF_MULTICAST)) {
1185                 mc_all_on = false;
1186                 set_bit(NETDEV_MCAST_ALL_OFF, &vif->flags);
1187         } else {
1188                 clear_bit(NETDEV_MCAST_ALL_OFF, &vif->flags);
1189         }
1190
1191         /* Enable/disable "multicast-all" filter*/
1192         ath6kl_dbg(ATH6KL_DBG_TRC, "%s multicast-all filter\n",
1193                    mc_all_on ? "enabling" : "disabling");
1194
1195         ret = ath6kl_wmi_mcast_filter_cmd(vif->ar->wmi, vif->fw_vif_idx,
1196                                                   mc_all_on);
1197         if (ret) {
1198                 ath6kl_warn("Failed to %s multicast-all receive\n",
1199                             mc_all_on ? "enable" : "disable");
1200                 return;
1201         }
1202
1203         if (test_bit(NETDEV_MCAST_ALL_ON, &vif->flags))
1204                 return;
1205
1206         /* Keep the driver and firmware mcast list in sync. */
1207         list_for_each_entry_safe(mc_filter, tmp, &vif->mc_filter, list) {
1208                 found = false;
1209                 netdev_for_each_mc_addr(ha, ndev) {
1210                         if (memcmp(ha->addr, mc_filter->hw_addr,
1211                                    ATH6KL_MCAST_FILTER_MAC_ADDR_SIZE) == 0) {
1212                                 found = true;
1213                                 break;
1214                         }
1215                 }
1216
1217                 if (!found) {
1218                         /*
1219                          * Delete the filter which was previously set
1220                          * but not in the new request.
1221                          */
1222                         ath6kl_dbg(ATH6KL_DBG_TRC,
1223                                    "Removing %pM from multicast filter\n",
1224                                    mc_filter->hw_addr);
1225                         ret = ath6kl_wmi_add_del_mcast_filter_cmd(vif->ar->wmi,
1226                                         vif->fw_vif_idx, mc_filter->hw_addr,
1227                                         false);
1228                         if (ret) {
1229                                 ath6kl_warn("Failed to remove multicast filter:%pM\n",
1230                                             mc_filter->hw_addr);
1231                                 return;
1232                         }
1233
1234                         list_del(&mc_filter->list);
1235                         kfree(mc_filter);
1236                 }
1237         }
1238
1239         INIT_LIST_HEAD(&mc_filter_new);
1240
1241         netdev_for_each_mc_addr(ha, ndev) {
1242                 found = false;
1243                 list_for_each_entry(mc_filter, &vif->mc_filter, list) {
1244                         if (memcmp(ha->addr, mc_filter->hw_addr,
1245                                    ATH6KL_MCAST_FILTER_MAC_ADDR_SIZE) == 0) {
1246                                 found = true;
1247                                 break;
1248                         }
1249                 }
1250
1251                 if (!found) {
1252                         mc_filter = kzalloc(sizeof(struct ath6kl_mc_filter),
1253                                             GFP_ATOMIC);
1254                         if (!mc_filter) {
1255                                 WARN_ON(1);
1256                                 goto out;
1257                         }
1258
1259                         memcpy(mc_filter->hw_addr, ha->addr,
1260                                ATH6KL_MCAST_FILTER_MAC_ADDR_SIZE);
1261                         /* Set the multicast filter */
1262                         ath6kl_dbg(ATH6KL_DBG_TRC,
1263                                    "Adding %pM to multicast filter list\n",
1264                                    mc_filter->hw_addr);
1265                         ret = ath6kl_wmi_add_del_mcast_filter_cmd(vif->ar->wmi,
1266                                         vif->fw_vif_idx, mc_filter->hw_addr,
1267                                         true);
1268                         if (ret) {
1269                                 ath6kl_warn("Failed to add multicast filter :%pM\n",
1270                                             mc_filter->hw_addr);
1271                                 kfree(mc_filter);
1272                                 goto out;
1273                         }
1274
1275                         list_add_tail(&mc_filter->list, &mc_filter_new);
1276                 }
1277         }
1278
1279 out:
1280         list_splice_tail(&mc_filter_new, &vif->mc_filter);
1281 }
1282
1283 static const struct net_device_ops ath6kl_netdev_ops = {
1284         .ndo_open               = ath6kl_open,
1285         .ndo_stop               = ath6kl_close,
1286         .ndo_start_xmit         = ath6kl_data_tx,
1287         .ndo_set_features       = ath6kl_set_features,
1288         .ndo_set_rx_mode        = ath6kl_set_multicast_list,
1289 };
1290
1291 void init_netdev(struct net_device *dev)
1292 {
1293         struct ath6kl *ar = ath6kl_priv(dev);
1294
1295         dev->netdev_ops = &ath6kl_netdev_ops;
1296         dev->needs_free_netdev = true;
1297         dev->watchdog_timeo = ATH6KL_TX_TIMEOUT;
1298
1299         dev->needed_headroom = ETH_HLEN;
1300         dev->needed_headroom += roundup(sizeof(struct ath6kl_llc_snap_hdr) +
1301                                         sizeof(struct wmi_data_hdr) +
1302                                         HTC_HDR_LENGTH +
1303                                         WMI_MAX_TX_META_SZ +
1304                                         ATH6KL_HTC_ALIGN_BYTES, 4);
1305
1306         if (!test_bit(ATH6KL_FW_CAPABILITY_NO_IP_CHECKSUM,
1307                       ar->fw_capabilities))
1308                 dev->hw_features |= NETIF_F_IP_CSUM | NETIF_F_RXCSUM;
1309
1310         return;
1311 }
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