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
ath6kl_find_sta(struct ath6kl_vif * vif,u8 * node_addr)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 max_conn = (vif->nw_type == AP_NETWORK) ? AP_MAX_NUM_STA : 0;
33
34 for (i = 0; i < max_conn; i++) {
35 if (memcmp(node_addr, ar->sta_list[i].mac, ETH_ALEN) == 0) {
36 conn = &ar->sta_list[i];
37 break;
38 }
39 }
40
41 return conn;
42 }
43
ath6kl_find_sta_by_aid(struct ath6kl * ar,u8 aid)44 struct ath6kl_sta *ath6kl_find_sta_by_aid(struct ath6kl *ar, u8 aid)
45 {
46 struct ath6kl_sta *conn = NULL;
47 u8 ctr;
48
49 for (ctr = 0; ctr < AP_MAX_NUM_STA; ctr++) {
50 if (ar->sta_list[ctr].aid == aid) {
51 conn = &ar->sta_list[ctr];
52 break;
53 }
54 }
55 return conn;
56 }
57
ath6kl_add_new_sta(struct ath6kl_vif * vif,u8 * mac,u16 aid,u8 * wpaie,size_t ielen,u8 keymgmt,u8 ucipher,u8 auth,u8 apsd_info)58 static void ath6kl_add_new_sta(struct ath6kl_vif *vif, u8 *mac, u16 aid,
59 u8 *wpaie, size_t ielen, u8 keymgmt,
60 u8 ucipher, u8 auth, u8 apsd_info)
61 {
62 struct ath6kl *ar = vif->ar;
63 struct ath6kl_sta *sta;
64 u8 free_slot;
65
66 free_slot = aid - 1;
67
68 sta = &ar->sta_list[free_slot];
69 memcpy(sta->mac, mac, ETH_ALEN);
70 if (ielen <= ATH6KL_MAX_IE)
71 memcpy(sta->wpa_ie, wpaie, ielen);
72 sta->aid = aid;
73 sta->keymgmt = keymgmt;
74 sta->ucipher = ucipher;
75 sta->auth = auth;
76 sta->apsd_info = apsd_info;
77
78 ar->sta_list_index = ar->sta_list_index | (1 << free_slot);
79 ar->ap_stats.sta[free_slot].aid = cpu_to_le32(aid);
80 aggr_conn_init(vif, vif->aggr_cntxt, sta->aggr_conn);
81 }
82
ath6kl_sta_cleanup(struct ath6kl * ar,u8 i)83 static void ath6kl_sta_cleanup(struct ath6kl *ar, u8 i)
84 {
85 struct ath6kl_sta *sta = &ar->sta_list[i];
86 struct ath6kl_mgmt_buff *entry, *tmp;
87
88 /* empty the queued pkts in the PS queue if any */
89 spin_lock_bh(&sta->psq_lock);
90 skb_queue_purge(&sta->psq);
91 skb_queue_purge(&sta->apsdq);
92
93 if (sta->mgmt_psq_len != 0) {
94 list_for_each_entry_safe(entry, tmp, &sta->mgmt_psq, list) {
95 kfree(entry);
96 }
97 INIT_LIST_HEAD(&sta->mgmt_psq);
98 sta->mgmt_psq_len = 0;
99 }
100
101 spin_unlock_bh(&sta->psq_lock);
102
103 memset(&ar->ap_stats.sta[sta->aid - 1], 0,
104 sizeof(struct wmi_per_sta_stat));
105 memset(sta->mac, 0, ETH_ALEN);
106 memset(sta->wpa_ie, 0, ATH6KL_MAX_IE);
107 sta->aid = 0;
108 sta->sta_flags = 0;
109
110 ar->sta_list_index = ar->sta_list_index & ~(1 << i);
111 aggr_reset_state(sta->aggr_conn);
112 }
113
ath6kl_remove_sta(struct ath6kl * ar,u8 * mac,u16 reason)114 static u8 ath6kl_remove_sta(struct ath6kl *ar, u8 *mac, u16 reason)
115 {
116 u8 i, removed = 0;
117
118 if (is_zero_ether_addr(mac))
119 return removed;
120
121 if (is_broadcast_ether_addr(mac)) {
122 ath6kl_dbg(ATH6KL_DBG_TRC, "deleting all station\n");
123
124 for (i = 0; i < AP_MAX_NUM_STA; i++) {
125 if (!is_zero_ether_addr(ar->sta_list[i].mac)) {
126 ath6kl_sta_cleanup(ar, i);
127 removed = 1;
128 }
129 }
130 } else {
131 for (i = 0; i < AP_MAX_NUM_STA; i++) {
132 if (memcmp(ar->sta_list[i].mac, mac, ETH_ALEN) == 0) {
133 ath6kl_dbg(ATH6KL_DBG_TRC,
134 "deleting station %pM aid=%d reason=%d\n",
135 mac, ar->sta_list[i].aid, reason);
136 ath6kl_sta_cleanup(ar, i);
137 removed = 1;
138 break;
139 }
140 }
141 }
142
143 return removed;
144 }
145
ath6kl_ac2_endpoint_id(void * devt,u8 ac)146 enum htc_endpoint_id ath6kl_ac2_endpoint_id(void *devt, u8 ac)
147 {
148 struct ath6kl *ar = devt;
149 return ar->ac2ep_map[ac];
150 }
151
ath6kl_alloc_cookie(struct ath6kl * ar)152 struct ath6kl_cookie *ath6kl_alloc_cookie(struct ath6kl *ar)
153 {
154 struct ath6kl_cookie *cookie;
155
156 cookie = ar->cookie_list;
157 if (cookie != NULL) {
158 ar->cookie_list = cookie->arc_list_next;
159 ar->cookie_count--;
160 }
161
162 return cookie;
163 }
164
ath6kl_cookie_init(struct ath6kl * ar)165 void ath6kl_cookie_init(struct ath6kl *ar)
166 {
167 u32 i;
168
169 ar->cookie_list = NULL;
170 ar->cookie_count = 0;
171
172 memset(ar->cookie_mem, 0, sizeof(ar->cookie_mem));
173
174 for (i = 0; i < MAX_COOKIE_NUM; i++)
175 ath6kl_free_cookie(ar, &ar->cookie_mem[i]);
176 }
177
ath6kl_cookie_cleanup(struct ath6kl * ar)178 void ath6kl_cookie_cleanup(struct ath6kl *ar)
179 {
180 ar->cookie_list = NULL;
181 ar->cookie_count = 0;
182 }
183
ath6kl_free_cookie(struct ath6kl * ar,struct ath6kl_cookie * cookie)184 void ath6kl_free_cookie(struct ath6kl *ar, struct ath6kl_cookie *cookie)
185 {
186 /* Insert first */
187
188 if (!ar || !cookie)
189 return;
190
191 cookie->arc_list_next = ar->cookie_list;
192 ar->cookie_list = cookie;
193 ar->cookie_count++;
194 }
195
196 /*
197 * Read from the hardware through its diagnostic window. No cooperation
198 * from the firmware is required for this.
199 */
ath6kl_diag_read32(struct ath6kl * ar,u32 address,u32 * value)200 int ath6kl_diag_read32(struct ath6kl *ar, u32 address, u32 *value)
201 {
202 int ret;
203
204 ret = ath6kl_hif_diag_read32(ar, address, value);
205 if (ret) {
206 ath6kl_warn("failed to read32 through diagnose window: %d\n",
207 ret);
208 return ret;
209 }
210
211 return 0;
212 }
213
214 /*
215 * Write to the ATH6KL through its diagnostic window. No cooperation from
216 * the Target is required for this.
217 */
ath6kl_diag_write32(struct ath6kl * ar,u32 address,__le32 value)218 int ath6kl_diag_write32(struct ath6kl *ar, u32 address, __le32 value)
219 {
220 int ret;
221
222 ret = ath6kl_hif_diag_write32(ar, address, value);
223
224 if (ret) {
225 ath6kl_err("failed to write 0x%x during diagnose window to 0x%d\n",
226 address, value);
227 return ret;
228 }
229
230 return 0;
231 }
232
ath6kl_diag_read(struct ath6kl * ar,u32 address,void * data,u32 length)233 int ath6kl_diag_read(struct ath6kl *ar, u32 address, void *data, u32 length)
234 {
235 u32 count, *buf = data;
236 int ret;
237
238 if (WARN_ON(length % 4))
239 return -EINVAL;
240
241 for (count = 0; count < length / 4; count++, address += 4) {
242 ret = ath6kl_diag_read32(ar, address, &buf[count]);
243 if (ret)
244 return ret;
245 }
246
247 return 0;
248 }
249
ath6kl_diag_write(struct ath6kl * ar,u32 address,void * data,u32 length)250 int ath6kl_diag_write(struct ath6kl *ar, u32 address, void *data, u32 length)
251 {
252 u32 count;
253 __le32 *buf = data;
254 int ret;
255
256 if (WARN_ON(length % 4))
257 return -EINVAL;
258
259 for (count = 0; count < length / 4; count++, address += 4) {
260 ret = ath6kl_diag_write32(ar, address, buf[count]);
261 if (ret)
262 return ret;
263 }
264
265 return 0;
266 }
267
ath6kl_read_fwlogs(struct ath6kl * ar)268 int ath6kl_read_fwlogs(struct ath6kl *ar)
269 {
270 struct ath6kl_dbglog_hdr debug_hdr;
271 struct ath6kl_dbglog_buf debug_buf;
272 u32 address, length, dropped, firstbuf, debug_hdr_addr;
273 int ret, loop;
274 u8 *buf;
275
276 buf = kmalloc(ATH6KL_FWLOG_PAYLOAD_SIZE, GFP_KERNEL);
277 if (!buf)
278 return -ENOMEM;
279
280 address = TARG_VTOP(ar->target_type,
281 ath6kl_get_hi_item_addr(ar,
282 HI_ITEM(hi_dbglog_hdr)));
283
284 ret = ath6kl_diag_read32(ar, address, &debug_hdr_addr);
285 if (ret)
286 goto out;
287
288 /* Get the contents of the ring buffer */
289 if (debug_hdr_addr == 0) {
290 ath6kl_warn("Invalid address for debug_hdr_addr\n");
291 ret = -EINVAL;
292 goto out;
293 }
294
295 address = TARG_VTOP(ar->target_type, debug_hdr_addr);
296 ret = ath6kl_diag_read(ar, address, &debug_hdr, sizeof(debug_hdr));
297 if (ret)
298 goto out;
299
300 address = TARG_VTOP(ar->target_type,
301 le32_to_cpu(debug_hdr.dbuf_addr));
302 firstbuf = address;
303 dropped = le32_to_cpu(debug_hdr.dropped);
304 ret = ath6kl_diag_read(ar, address, &debug_buf, sizeof(debug_buf));
305 if (ret)
306 goto out;
307
308 loop = 100;
309
310 do {
311 address = TARG_VTOP(ar->target_type,
312 le32_to_cpu(debug_buf.buffer_addr));
313 length = le32_to_cpu(debug_buf.length);
314
315 if (length != 0 && (le32_to_cpu(debug_buf.length) <=
316 le32_to_cpu(debug_buf.bufsize))) {
317 length = ALIGN(length, 4);
318
319 ret = ath6kl_diag_read(ar, address,
320 buf, length);
321 if (ret)
322 goto out;
323
324 ath6kl_debug_fwlog_event(ar, buf, length);
325 }
326
327 address = TARG_VTOP(ar->target_type,
328 le32_to_cpu(debug_buf.next));
329 ret = ath6kl_diag_read(ar, address, &debug_buf,
330 sizeof(debug_buf));
331 if (ret)
332 goto out;
333
334 loop--;
335
336 if (WARN_ON(loop == 0)) {
337 ret = -ETIMEDOUT;
338 goto out;
339 }
340 } while (address != firstbuf);
341
342 out:
343 kfree(buf);
344
345 return ret;
346 }
347
ath6kl_install_static_wep_keys(struct ath6kl_vif * vif)348 static void ath6kl_install_static_wep_keys(struct ath6kl_vif *vif)
349 {
350 u8 index;
351 u8 keyusage;
352
353 for (index = 0; index <= WMI_MAX_KEY_INDEX; index++) {
354 if (vif->wep_key_list[index].key_len) {
355 keyusage = GROUP_USAGE;
356 if (index == vif->def_txkey_index)
357 keyusage |= TX_USAGE;
358
359 ath6kl_wmi_addkey_cmd(vif->ar->wmi, vif->fw_vif_idx,
360 index,
361 WEP_CRYPT,
362 keyusage,
363 vif->wep_key_list[index].key_len,
364 NULL, 0,
365 vif->wep_key_list[index].key,
366 KEY_OP_INIT_VAL, NULL,
367 NO_SYNC_WMIFLAG);
368 }
369 }
370 }
371
ath6kl_connect_ap_mode_bss(struct ath6kl_vif * vif,u16 channel)372 void ath6kl_connect_ap_mode_bss(struct ath6kl_vif *vif, u16 channel)
373 {
374 struct ath6kl *ar = vif->ar;
375 struct ath6kl_req_key *ik;
376 int res;
377 u8 key_rsc[ATH6KL_KEY_SEQ_LEN];
378
379 ik = &ar->ap_mode_bkey;
380
381 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "AP mode started on %u MHz\n", channel);
382
383 switch (vif->auth_mode) {
384 case NONE_AUTH:
385 if (vif->prwise_crypto == WEP_CRYPT)
386 ath6kl_install_static_wep_keys(vif);
387 if (!ik->valid || ik->key_type != WAPI_CRYPT)
388 break;
389 /* for WAPI, we need to set the delayed group key, continue: */
390 case WPA_PSK_AUTH:
391 case WPA2_PSK_AUTH:
392 case (WPA_PSK_AUTH | WPA2_PSK_AUTH):
393 if (!ik->valid)
394 break;
395
396 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
397 "Delayed addkey for the initial group key for AP mode\n");
398 memset(key_rsc, 0, sizeof(key_rsc));
399 res = ath6kl_wmi_addkey_cmd(
400 ar->wmi, vif->fw_vif_idx, ik->key_index, ik->key_type,
401 GROUP_USAGE, ik->key_len, key_rsc, ATH6KL_KEY_SEQ_LEN,
402 ik->key,
403 KEY_OP_INIT_VAL, NULL, SYNC_BOTH_WMIFLAG);
404 if (res) {
405 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
406 "Delayed addkey failed: %d\n", res);
407 }
408 break;
409 }
410
411 if (ar->last_ch != channel)
412 /* we actually don't know the phymode, default to HT20 */
413 ath6kl_cfg80211_ch_switch_notify(vif, channel, WMI_11G_HT20);
414
415 ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx, NONE_BSS_FILTER, 0);
416 set_bit(CONNECTED, &vif->flags);
417 netif_carrier_on(vif->ndev);
418 }
419
ath6kl_connect_ap_mode_sta(struct ath6kl_vif * vif,u16 aid,u8 * mac_addr,u8 keymgmt,u8 ucipher,u8 auth,u8 assoc_req_len,u8 * assoc_info,u8 apsd_info)420 void ath6kl_connect_ap_mode_sta(struct ath6kl_vif *vif, u16 aid, u8 *mac_addr,
421 u8 keymgmt, u8 ucipher, u8 auth,
422 u8 assoc_req_len, u8 *assoc_info, u8 apsd_info)
423 {
424 u8 *ies = NULL, *wpa_ie = NULL, *pos;
425 size_t ies_len = 0;
426 struct station_info sinfo;
427
428 ath6kl_dbg(ATH6KL_DBG_TRC, "new station %pM aid=%d\n", mac_addr, aid);
429
430 if (assoc_req_len > sizeof(struct ieee80211_hdr_3addr)) {
431 struct ieee80211_mgmt *mgmt =
432 (struct ieee80211_mgmt *) assoc_info;
433 if (ieee80211_is_assoc_req(mgmt->frame_control) &&
434 assoc_req_len >= sizeof(struct ieee80211_hdr_3addr) +
435 sizeof(mgmt->u.assoc_req)) {
436 ies = mgmt->u.assoc_req.variable;
437 ies_len = assoc_info + assoc_req_len - ies;
438 } else if (ieee80211_is_reassoc_req(mgmt->frame_control) &&
439 assoc_req_len >= sizeof(struct ieee80211_hdr_3addr)
440 + sizeof(mgmt->u.reassoc_req)) {
441 ies = mgmt->u.reassoc_req.variable;
442 ies_len = assoc_info + assoc_req_len - ies;
443 }
444 }
445
446 pos = ies;
447 while (pos && pos + 1 < ies + ies_len) {
448 if (pos + 2 + pos[1] > ies + ies_len)
449 break;
450 if (pos[0] == WLAN_EID_RSN)
451 wpa_ie = pos; /* RSN IE */
452 else if (pos[0] == WLAN_EID_VENDOR_SPECIFIC &&
453 pos[1] >= 4 &&
454 pos[2] == 0x00 && pos[3] == 0x50 && pos[4] == 0xf2) {
455 if (pos[5] == 0x01)
456 wpa_ie = pos; /* WPA IE */
457 else if (pos[5] == 0x04) {
458 wpa_ie = pos; /* WPS IE */
459 break; /* overrides WPA/RSN IE */
460 }
461 } else if (pos[0] == 0x44 && wpa_ie == NULL) {
462 /*
463 * Note: WAPI Parameter Set IE re-uses Element ID that
464 * was officially allocated for BSS AC Access Delay. As
465 * such, we need to be a bit more careful on when
466 * parsing the frame. However, BSS AC Access Delay
467 * element is not supposed to be included in
468 * (Re)Association Request frames, so this should not
469 * cause problems.
470 */
471 wpa_ie = pos; /* WAPI IE */
472 break;
473 }
474 pos += 2 + pos[1];
475 }
476
477 ath6kl_add_new_sta(vif, mac_addr, aid, wpa_ie,
478 wpa_ie ? 2 + wpa_ie[1] : 0,
479 keymgmt, ucipher, auth, apsd_info);
480
481 /* send event to application */
482 memset(&sinfo, 0, sizeof(sinfo));
483
484 /* TODO: sinfo.generation */
485
486 sinfo.assoc_req_ies = ies;
487 sinfo.assoc_req_ies_len = ies_len;
488 sinfo.filled |= STATION_INFO_ASSOC_REQ_IES;
489
490 cfg80211_new_sta(vif->ndev, mac_addr, &sinfo, GFP_KERNEL);
491
492 netif_wake_queue(vif->ndev);
493 }
494
disconnect_timer_handler(unsigned long ptr)495 void disconnect_timer_handler(unsigned long ptr)
496 {
497 struct net_device *dev = (struct net_device *)ptr;
498 struct ath6kl_vif *vif = netdev_priv(dev);
499
500 ath6kl_init_profile_info(vif);
501 ath6kl_disconnect(vif);
502 }
503
ath6kl_disconnect(struct ath6kl_vif * vif)504 void ath6kl_disconnect(struct ath6kl_vif *vif)
505 {
506 if (test_bit(CONNECTED, &vif->flags) ||
507 test_bit(CONNECT_PEND, &vif->flags)) {
508 ath6kl_wmi_disconnect_cmd(vif->ar->wmi, vif->fw_vif_idx);
509 /*
510 * Disconnect command is issued, clear the connect pending
511 * flag. The connected flag will be cleared in
512 * disconnect event notification.
513 */
514 clear_bit(CONNECT_PEND, &vif->flags);
515 }
516 }
517
518 /* WMI Event handlers */
519
ath6kl_ready_event(void * devt,u8 * datap,u32 sw_ver,u32 abi_ver,enum wmi_phy_cap cap)520 void ath6kl_ready_event(void *devt, u8 *datap, u32 sw_ver, u32 abi_ver,
521 enum wmi_phy_cap cap)
522 {
523 struct ath6kl *ar = devt;
524
525 memcpy(ar->mac_addr, datap, ETH_ALEN);
526
527 ath6kl_dbg(ATH6KL_DBG_BOOT,
528 "ready event mac addr %pM sw_ver 0x%x abi_ver 0x%x cap 0x%x\n",
529 ar->mac_addr, sw_ver, abi_ver, cap);
530
531 ar->version.wlan_ver = sw_ver;
532 ar->version.abi_ver = abi_ver;
533 ar->hw.cap = cap;
534
535 if (strlen(ar->wiphy->fw_version) == 0) {
536 snprintf(ar->wiphy->fw_version,
537 sizeof(ar->wiphy->fw_version),
538 "%u.%u.%u.%u",
539 (ar->version.wlan_ver & 0xf0000000) >> 28,
540 (ar->version.wlan_ver & 0x0f000000) >> 24,
541 (ar->version.wlan_ver & 0x00ff0000) >> 16,
542 (ar->version.wlan_ver & 0x0000ffff));
543 }
544
545 /* indicate to the waiting thread that the ready event was received */
546 set_bit(WMI_READY, &ar->flag);
547 wake_up(&ar->event_wq);
548 }
549
ath6kl_scan_complete_evt(struct ath6kl_vif * vif,int status)550 void ath6kl_scan_complete_evt(struct ath6kl_vif *vif, int status)
551 {
552 struct ath6kl *ar = vif->ar;
553 bool aborted = false;
554
555 if (status != WMI_SCAN_STATUS_SUCCESS)
556 aborted = true;
557
558 ath6kl_cfg80211_scan_complete_event(vif, aborted);
559
560 if (!ar->usr_bss_filter) {
561 clear_bit(CLEAR_BSSFILTER_ON_BEACON, &vif->flags);
562 ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx,
563 NONE_BSS_FILTER, 0);
564 }
565
566 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "scan complete: %d\n", status);
567 }
568
ath6kl_commit_ch_switch(struct ath6kl_vif * vif,u16 channel)569 static int ath6kl_commit_ch_switch(struct ath6kl_vif *vif, u16 channel)
570 {
571
572 struct ath6kl *ar = vif->ar;
573
574 vif->profile.ch = cpu_to_le16(channel);
575
576 switch (vif->nw_type) {
577 case AP_NETWORK:
578 /*
579 * reconfigure any saved RSN IE capabilites in the beacon /
580 * probe response to stay in sync with the supplicant.
581 */
582 if (vif->rsn_capab &&
583 test_bit(ATH6KL_FW_CAPABILITY_RSN_CAP_OVERRIDE,
584 ar->fw_capabilities))
585 ath6kl_wmi_set_ie_cmd(ar->wmi, vif->fw_vif_idx,
586 WLAN_EID_RSN, WMI_RSN_IE_CAPB,
587 (const u8 *) &vif->rsn_capab,
588 sizeof(vif->rsn_capab));
589
590 return ath6kl_wmi_ap_profile_commit(ar->wmi, vif->fw_vif_idx,
591 &vif->profile);
592 default:
593 ath6kl_err("won't switch channels nw_type=%d\n", vif->nw_type);
594 return -ENOTSUPP;
595 }
596 }
597
ath6kl_check_ch_switch(struct ath6kl * ar,u16 channel)598 static void ath6kl_check_ch_switch(struct ath6kl *ar, u16 channel)
599 {
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
ath6kl_connect_event(struct ath6kl_vif * vif,u16 channel,u8 * bssid,u16 listen_int,u16 beacon_int,enum network_type net_type,u8 beacon_ie_len,u8 assoc_req_len,u8 assoc_resp_len,u8 * assoc_info)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
ath6kl_tkip_micerr_event(struct ath6kl_vif * vif,u8 keyid,bool ismcast)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
ath6kl_update_target_stats(struct ath6kl_vif * vif,u8 * ptr,u32 len)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 u8 ac;
705
706 if (len < sizeof(*tgt_stats))
707 return;
708
709 ath6kl_dbg(ATH6KL_DBG_TRC, "updating target stats\n");
710
711 stats->tx_pkt += le32_to_cpu(tgt_stats->stats.tx.pkt);
712 stats->tx_byte += le32_to_cpu(tgt_stats->stats.tx.byte);
713 stats->tx_ucast_pkt += le32_to_cpu(tgt_stats->stats.tx.ucast_pkt);
714 stats->tx_ucast_byte += le32_to_cpu(tgt_stats->stats.tx.ucast_byte);
715 stats->tx_mcast_pkt += le32_to_cpu(tgt_stats->stats.tx.mcast_pkt);
716 stats->tx_mcast_byte += le32_to_cpu(tgt_stats->stats.tx.mcast_byte);
717 stats->tx_bcast_pkt += le32_to_cpu(tgt_stats->stats.tx.bcast_pkt);
718 stats->tx_bcast_byte += le32_to_cpu(tgt_stats->stats.tx.bcast_byte);
719 stats->tx_rts_success_cnt +=
720 le32_to_cpu(tgt_stats->stats.tx.rts_success_cnt);
721
722 for (ac = 0; ac < WMM_NUM_AC; ac++)
723 stats->tx_pkt_per_ac[ac] +=
724 le32_to_cpu(tgt_stats->stats.tx.pkt_per_ac[ac]);
725
726 stats->tx_err += le32_to_cpu(tgt_stats->stats.tx.err);
727 stats->tx_fail_cnt += le32_to_cpu(tgt_stats->stats.tx.fail_cnt);
728 stats->tx_retry_cnt += le32_to_cpu(tgt_stats->stats.tx.retry_cnt);
729 stats->tx_mult_retry_cnt +=
730 le32_to_cpu(tgt_stats->stats.tx.mult_retry_cnt);
731 stats->tx_rts_fail_cnt +=
732 le32_to_cpu(tgt_stats->stats.tx.rts_fail_cnt);
733 stats->tx_ucast_rate =
734 ath6kl_wmi_get_rate(a_sle32_to_cpu(tgt_stats->stats.tx.ucast_rate));
735
736 stats->rx_pkt += le32_to_cpu(tgt_stats->stats.rx.pkt);
737 stats->rx_byte += le32_to_cpu(tgt_stats->stats.rx.byte);
738 stats->rx_ucast_pkt += le32_to_cpu(tgt_stats->stats.rx.ucast_pkt);
739 stats->rx_ucast_byte += le32_to_cpu(tgt_stats->stats.rx.ucast_byte);
740 stats->rx_mcast_pkt += le32_to_cpu(tgt_stats->stats.rx.mcast_pkt);
741 stats->rx_mcast_byte += le32_to_cpu(tgt_stats->stats.rx.mcast_byte);
742 stats->rx_bcast_pkt += le32_to_cpu(tgt_stats->stats.rx.bcast_pkt);
743 stats->rx_bcast_byte += le32_to_cpu(tgt_stats->stats.rx.bcast_byte);
744 stats->rx_frgment_pkt += le32_to_cpu(tgt_stats->stats.rx.frgment_pkt);
745 stats->rx_err += le32_to_cpu(tgt_stats->stats.rx.err);
746 stats->rx_crc_err += le32_to_cpu(tgt_stats->stats.rx.crc_err);
747 stats->rx_key_cache_miss +=
748 le32_to_cpu(tgt_stats->stats.rx.key_cache_miss);
749 stats->rx_decrypt_err += le32_to_cpu(tgt_stats->stats.rx.decrypt_err);
750 stats->rx_dupl_frame += le32_to_cpu(tgt_stats->stats.rx.dupl_frame);
751 stats->rx_ucast_rate =
752 ath6kl_wmi_get_rate(a_sle32_to_cpu(tgt_stats->stats.rx.ucast_rate));
753
754 ccmp_stats = &tgt_stats->stats.tkip_ccmp_stats;
755
756 stats->tkip_local_mic_fail +=
757 le32_to_cpu(ccmp_stats->tkip_local_mic_fail);
758 stats->tkip_cnter_measures_invoked +=
759 le32_to_cpu(ccmp_stats->tkip_cnter_measures_invoked);
760 stats->tkip_fmt_err += le32_to_cpu(ccmp_stats->tkip_fmt_err);
761
762 stats->ccmp_fmt_err += le32_to_cpu(ccmp_stats->ccmp_fmt_err);
763 stats->ccmp_replays += le32_to_cpu(ccmp_stats->ccmp_replays);
764
765 stats->pwr_save_fail_cnt +=
766 le32_to_cpu(tgt_stats->pm_stats.pwr_save_failure_cnt);
767 stats->noise_floor_calib =
768 a_sle32_to_cpu(tgt_stats->noise_floor_calib);
769
770 stats->cs_bmiss_cnt +=
771 le32_to_cpu(tgt_stats->cserv_stats.cs_bmiss_cnt);
772 stats->cs_low_rssi_cnt +=
773 le32_to_cpu(tgt_stats->cserv_stats.cs_low_rssi_cnt);
774 stats->cs_connect_cnt +=
775 le16_to_cpu(tgt_stats->cserv_stats.cs_connect_cnt);
776 stats->cs_discon_cnt +=
777 le16_to_cpu(tgt_stats->cserv_stats.cs_discon_cnt);
778
779 stats->cs_ave_beacon_rssi =
780 a_sle16_to_cpu(tgt_stats->cserv_stats.cs_ave_beacon_rssi);
781
782 stats->cs_last_roam_msec =
783 tgt_stats->cserv_stats.cs_last_roam_msec;
784 stats->cs_snr = tgt_stats->cserv_stats.cs_snr;
785 stats->cs_rssi = a_sle16_to_cpu(tgt_stats->cserv_stats.cs_rssi);
786
787 stats->lq_val = le32_to_cpu(tgt_stats->lq_val);
788
789 stats->wow_pkt_dropped +=
790 le32_to_cpu(tgt_stats->wow_stats.wow_pkt_dropped);
791 stats->wow_host_pkt_wakeups +=
792 tgt_stats->wow_stats.wow_host_pkt_wakeups;
793 stats->wow_host_evt_wakeups +=
794 tgt_stats->wow_stats.wow_host_evt_wakeups;
795 stats->wow_evt_discarded +=
796 le16_to_cpu(tgt_stats->wow_stats.wow_evt_discarded);
797
798 stats->arp_received = le32_to_cpu(tgt_stats->arp_stats.arp_received);
799 stats->arp_replied = le32_to_cpu(tgt_stats->arp_stats.arp_replied);
800 stats->arp_matched = le32_to_cpu(tgt_stats->arp_stats.arp_matched);
801
802 if (test_bit(STATS_UPDATE_PEND, &vif->flags)) {
803 clear_bit(STATS_UPDATE_PEND, &vif->flags);
804 wake_up(&ar->event_wq);
805 }
806 }
807
ath6kl_add_le32(__le32 * var,__le32 val)808 static void ath6kl_add_le32(__le32 *var, __le32 val)
809 {
810 *var = cpu_to_le32(le32_to_cpu(*var) + le32_to_cpu(val));
811 }
812
ath6kl_tgt_stats_event(struct ath6kl_vif * vif,u8 * ptr,u32 len)813 void ath6kl_tgt_stats_event(struct ath6kl_vif *vif, u8 *ptr, u32 len)
814 {
815 struct wmi_ap_mode_stat *p = (struct wmi_ap_mode_stat *) ptr;
816 struct ath6kl *ar = vif->ar;
817 struct wmi_ap_mode_stat *ap = &ar->ap_stats;
818 struct wmi_per_sta_stat *st_ap, *st_p;
819 u8 ac;
820
821 if (vif->nw_type == AP_NETWORK) {
822 if (len < sizeof(*p))
823 return;
824
825 for (ac = 0; ac < AP_MAX_NUM_STA; ac++) {
826 st_ap = &ap->sta[ac];
827 st_p = &p->sta[ac];
828
829 ath6kl_add_le32(&st_ap->tx_bytes, st_p->tx_bytes);
830 ath6kl_add_le32(&st_ap->tx_pkts, st_p->tx_pkts);
831 ath6kl_add_le32(&st_ap->tx_error, st_p->tx_error);
832 ath6kl_add_le32(&st_ap->tx_discard, st_p->tx_discard);
833 ath6kl_add_le32(&st_ap->rx_bytes, st_p->rx_bytes);
834 ath6kl_add_le32(&st_ap->rx_pkts, st_p->rx_pkts);
835 ath6kl_add_le32(&st_ap->rx_error, st_p->rx_error);
836 ath6kl_add_le32(&st_ap->rx_discard, st_p->rx_discard);
837 }
838
839 } else {
840 ath6kl_update_target_stats(vif, ptr, len);
841 }
842 }
843
ath6kl_wakeup_event(void * dev)844 void ath6kl_wakeup_event(void *dev)
845 {
846 struct ath6kl *ar = (struct ath6kl *) dev;
847
848 wake_up(&ar->event_wq);
849 }
850
ath6kl_txpwr_rx_evt(void * devt,u8 tx_pwr)851 void ath6kl_txpwr_rx_evt(void *devt, u8 tx_pwr)
852 {
853 struct ath6kl *ar = (struct ath6kl *) devt;
854
855 ar->tx_pwr = tx_pwr;
856 wake_up(&ar->event_wq);
857 }
858
ath6kl_pspoll_event(struct ath6kl_vif * vif,u8 aid)859 void ath6kl_pspoll_event(struct ath6kl_vif *vif, u8 aid)
860 {
861 struct ath6kl_sta *conn;
862 struct sk_buff *skb;
863 bool psq_empty = false;
864 struct ath6kl *ar = vif->ar;
865 struct ath6kl_mgmt_buff *mgmt_buf;
866
867 conn = ath6kl_find_sta_by_aid(ar, aid);
868
869 if (!conn)
870 return;
871 /*
872 * Send out a packet queued on ps queue. When the ps queue
873 * becomes empty update the PVB for this station.
874 */
875 spin_lock_bh(&conn->psq_lock);
876 psq_empty = skb_queue_empty(&conn->psq) && (conn->mgmt_psq_len == 0);
877 spin_unlock_bh(&conn->psq_lock);
878
879 if (psq_empty)
880 /* TODO: Send out a NULL data frame */
881 return;
882
883 spin_lock_bh(&conn->psq_lock);
884 if (conn->mgmt_psq_len > 0) {
885 mgmt_buf = list_first_entry(&conn->mgmt_psq,
886 struct ath6kl_mgmt_buff, list);
887 list_del(&mgmt_buf->list);
888 conn->mgmt_psq_len--;
889 spin_unlock_bh(&conn->psq_lock);
890
891 conn->sta_flags |= STA_PS_POLLED;
892 ath6kl_wmi_send_mgmt_cmd(ar->wmi, vif->fw_vif_idx,
893 mgmt_buf->id, mgmt_buf->freq,
894 mgmt_buf->wait, mgmt_buf->buf,
895 mgmt_buf->len, mgmt_buf->no_cck);
896 conn->sta_flags &= ~STA_PS_POLLED;
897 kfree(mgmt_buf);
898 } else {
899 skb = skb_dequeue(&conn->psq);
900 spin_unlock_bh(&conn->psq_lock);
901
902 conn->sta_flags |= STA_PS_POLLED;
903 ath6kl_data_tx(skb, vif->ndev);
904 conn->sta_flags &= ~STA_PS_POLLED;
905 }
906
907 spin_lock_bh(&conn->psq_lock);
908 psq_empty = skb_queue_empty(&conn->psq) && (conn->mgmt_psq_len == 0);
909 spin_unlock_bh(&conn->psq_lock);
910
911 if (psq_empty)
912 ath6kl_wmi_set_pvb_cmd(ar->wmi, vif->fw_vif_idx, conn->aid, 0);
913 }
914
ath6kl_dtimexpiry_event(struct ath6kl_vif * vif)915 void ath6kl_dtimexpiry_event(struct ath6kl_vif *vif)
916 {
917 bool mcastq_empty = false;
918 struct sk_buff *skb;
919 struct ath6kl *ar = vif->ar;
920
921 /*
922 * If there are no associated STAs, ignore the DTIM expiry event.
923 * There can be potential race conditions where the last associated
924 * STA may disconnect & before the host could clear the 'Indicate
925 * DTIM' request to the firmware, the firmware would have just
926 * indicated a DTIM expiry event. The race is between 'clear DTIM
927 * expiry cmd' going from the host to the firmware & the DTIM
928 * expiry event happening from the firmware to the host.
929 */
930 if (!ar->sta_list_index)
931 return;
932
933 spin_lock_bh(&ar->mcastpsq_lock);
934 mcastq_empty = skb_queue_empty(&ar->mcastpsq);
935 spin_unlock_bh(&ar->mcastpsq_lock);
936
937 if (mcastq_empty)
938 return;
939
940 /* set the STA flag to dtim_expired for the frame to go out */
941 set_bit(DTIM_EXPIRED, &vif->flags);
942
943 spin_lock_bh(&ar->mcastpsq_lock);
944 while ((skb = skb_dequeue(&ar->mcastpsq)) != NULL) {
945 spin_unlock_bh(&ar->mcastpsq_lock);
946
947 ath6kl_data_tx(skb, vif->ndev);
948
949 spin_lock_bh(&ar->mcastpsq_lock);
950 }
951 spin_unlock_bh(&ar->mcastpsq_lock);
952
953 clear_bit(DTIM_EXPIRED, &vif->flags);
954
955 /* clear the LSB of the BitMapCtl field of the TIM IE */
956 ath6kl_wmi_set_pvb_cmd(ar->wmi, vif->fw_vif_idx, MCAST_AID, 0);
957 }
958
ath6kl_disconnect_event(struct ath6kl_vif * vif,u8 reason,u8 * bssid,u8 assoc_resp_len,u8 * assoc_info,u16 prot_reason_status)959 void ath6kl_disconnect_event(struct ath6kl_vif *vif, u8 reason, u8 *bssid,
960 u8 assoc_resp_len, u8 *assoc_info,
961 u16 prot_reason_status)
962 {
963 struct ath6kl *ar = vif->ar;
964
965 if (vif->nw_type == AP_NETWORK) {
966 /* disconnect due to other STA vif switching channels */
967 if (reason == BSS_DISCONNECTED &&
968 prot_reason_status == WMI_AP_REASON_STA_ROAM) {
969 ar->want_ch_switch |= 1 << vif->fw_vif_idx;
970 /* bail back to this channel if STA vif fails connect */
971 ar->last_ch = le16_to_cpu(vif->profile.ch);
972 }
973
974 if (prot_reason_status == WMI_AP_REASON_MAX_STA) {
975 /* send max client reached notification to user space */
976 cfg80211_conn_failed(vif->ndev, bssid,
977 NL80211_CONN_FAIL_MAX_CLIENTS,
978 GFP_KERNEL);
979 }
980
981 if (prot_reason_status == WMI_AP_REASON_ACL) {
982 /* send blocked client notification to user space */
983 cfg80211_conn_failed(vif->ndev, bssid,
984 NL80211_CONN_FAIL_BLOCKED_CLIENT,
985 GFP_KERNEL);
986 }
987
988 if (!ath6kl_remove_sta(ar, bssid, prot_reason_status))
989 return;
990
991 /* if no more associated STAs, empty the mcast PS q */
992 if (ar->sta_list_index == 0) {
993 spin_lock_bh(&ar->mcastpsq_lock);
994 skb_queue_purge(&ar->mcastpsq);
995 spin_unlock_bh(&ar->mcastpsq_lock);
996
997 /* clear the LSB of the TIM IE's BitMapCtl field */
998 if (test_bit(WMI_READY, &ar->flag))
999 ath6kl_wmi_set_pvb_cmd(ar->wmi, vif->fw_vif_idx,
1000 MCAST_AID, 0);
1001 }
1002
1003 if (!is_broadcast_ether_addr(bssid)) {
1004 /* send event to application */
1005 cfg80211_del_sta(vif->ndev, bssid, GFP_KERNEL);
1006 }
1007
1008 if (memcmp(vif->ndev->dev_addr, bssid, ETH_ALEN) == 0) {
1009 memset(vif->wep_key_list, 0, sizeof(vif->wep_key_list));
1010 clear_bit(CONNECTED, &vif->flags);
1011 }
1012 return;
1013 }
1014
1015 ath6kl_cfg80211_disconnect_event(vif, reason, bssid,
1016 assoc_resp_len, assoc_info,
1017 prot_reason_status);
1018
1019 aggr_reset_state(vif->aggr_cntxt->aggr_conn);
1020
1021 del_timer(&vif->disconnect_timer);
1022
1023 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "disconnect reason is %d\n", reason);
1024
1025 /*
1026 * If the event is due to disconnect cmd from the host, only they
1027 * the target would stop trying to connect. Under any other
1028 * condition, target would keep trying to connect.
1029 */
1030 if (reason == DISCONNECT_CMD) {
1031 if (!ar->usr_bss_filter && test_bit(WMI_READY, &ar->flag))
1032 ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx,
1033 NONE_BSS_FILTER, 0);
1034 } else {
1035 set_bit(CONNECT_PEND, &vif->flags);
1036 if (((reason == ASSOC_FAILED) &&
1037 (prot_reason_status == 0x11)) ||
1038 ((reason == ASSOC_FAILED) && (prot_reason_status == 0x0) &&
1039 (vif->reconnect_flag == 1))) {
1040 set_bit(CONNECTED, &vif->flags);
1041 return;
1042 }
1043 }
1044
1045 /* restart disconnected concurrent vifs waiting for new channel */
1046 ath6kl_check_ch_switch(ar, ar->last_ch);
1047
1048 /* update connect & link status atomically */
1049 spin_lock_bh(&vif->if_lock);
1050 clear_bit(CONNECTED, &vif->flags);
1051 netif_carrier_off(vif->ndev);
1052 spin_unlock_bh(&vif->if_lock);
1053
1054 if ((reason != CSERV_DISCONNECT) || (vif->reconnect_flag != 1))
1055 vif->reconnect_flag = 0;
1056
1057 if (reason != CSERV_DISCONNECT)
1058 ar->user_key_ctrl = 0;
1059
1060 netif_stop_queue(vif->ndev);
1061 memset(vif->bssid, 0, sizeof(vif->bssid));
1062 vif->bss_ch = 0;
1063
1064 ath6kl_tx_data_cleanup(ar);
1065 }
1066
ath6kl_vif_first(struct ath6kl * ar)1067 struct ath6kl_vif *ath6kl_vif_first(struct ath6kl *ar)
1068 {
1069 struct ath6kl_vif *vif;
1070
1071 spin_lock_bh(&ar->list_lock);
1072 if (list_empty(&ar->vif_list)) {
1073 spin_unlock_bh(&ar->list_lock);
1074 return NULL;
1075 }
1076
1077 vif = list_first_entry(&ar->vif_list, struct ath6kl_vif, list);
1078
1079 spin_unlock_bh(&ar->list_lock);
1080
1081 return vif;
1082 }
1083
ath6kl_open(struct net_device * dev)1084 static int ath6kl_open(struct net_device *dev)
1085 {
1086 struct ath6kl_vif *vif = netdev_priv(dev);
1087
1088 set_bit(WLAN_ENABLED, &vif->flags);
1089
1090 if (test_bit(CONNECTED, &vif->flags)) {
1091 netif_carrier_on(dev);
1092 netif_wake_queue(dev);
1093 } else
1094 netif_carrier_off(dev);
1095
1096 return 0;
1097 }
1098
ath6kl_close(struct net_device * dev)1099 static int ath6kl_close(struct net_device *dev)
1100 {
1101 struct ath6kl_vif *vif = netdev_priv(dev);
1102
1103 netif_stop_queue(dev);
1104
1105 ath6kl_cfg80211_stop(vif);
1106
1107 clear_bit(WLAN_ENABLED, &vif->flags);
1108
1109 return 0;
1110 }
1111
ath6kl_get_stats(struct net_device * dev)1112 static struct net_device_stats *ath6kl_get_stats(struct net_device *dev)
1113 {
1114 struct ath6kl_vif *vif = netdev_priv(dev);
1115
1116 return &vif->net_stats;
1117 }
1118
ath6kl_set_features(struct net_device * dev,netdev_features_t features)1119 static int ath6kl_set_features(struct net_device *dev,
1120 netdev_features_t features)
1121 {
1122 struct ath6kl_vif *vif = netdev_priv(dev);
1123 struct ath6kl *ar = vif->ar;
1124 int err = 0;
1125
1126 if ((features & NETIF_F_RXCSUM) &&
1127 (ar->rx_meta_ver != WMI_META_VERSION_2)) {
1128 ar->rx_meta_ver = WMI_META_VERSION_2;
1129 err = ath6kl_wmi_set_rx_frame_format_cmd(ar->wmi,
1130 vif->fw_vif_idx,
1131 ar->rx_meta_ver, 0, 0);
1132 if (err) {
1133 dev->features = features & ~NETIF_F_RXCSUM;
1134 return err;
1135 }
1136 } else if (!(features & NETIF_F_RXCSUM) &&
1137 (ar->rx_meta_ver == WMI_META_VERSION_2)) {
1138 ar->rx_meta_ver = 0;
1139 err = ath6kl_wmi_set_rx_frame_format_cmd(ar->wmi,
1140 vif->fw_vif_idx,
1141 ar->rx_meta_ver, 0, 0);
1142 if (err) {
1143 dev->features = features | NETIF_F_RXCSUM;
1144 return err;
1145 }
1146
1147 }
1148
1149 return err;
1150 }
1151
ath6kl_set_multicast_list(struct net_device * ndev)1152 static void ath6kl_set_multicast_list(struct net_device *ndev)
1153 {
1154 struct ath6kl_vif *vif = netdev_priv(ndev);
1155 bool mc_all_on = false;
1156 int mc_count = netdev_mc_count(ndev);
1157 struct netdev_hw_addr *ha;
1158 bool found;
1159 struct ath6kl_mc_filter *mc_filter, *tmp;
1160 struct list_head mc_filter_new;
1161 int ret;
1162
1163 if (!test_bit(WMI_READY, &vif->ar->flag) ||
1164 !test_bit(WLAN_ENABLED, &vif->flags))
1165 return;
1166
1167 /* Enable multicast-all filter. */
1168 mc_all_on = !!(ndev->flags & IFF_PROMISC) ||
1169 !!(ndev->flags & IFF_ALLMULTI) ||
1170 !!(mc_count > ATH6K_MAX_MC_FILTERS_PER_LIST);
1171
1172 if (mc_all_on)
1173 set_bit(NETDEV_MCAST_ALL_ON, &vif->flags);
1174 else
1175 clear_bit(NETDEV_MCAST_ALL_ON, &vif->flags);
1176
1177 if (test_bit(ATH6KL_FW_CAPABILITY_WOW_MULTICAST_FILTER,
1178 vif->ar->fw_capabilities)) {
1179 mc_all_on = mc_all_on || (vif->ar->state == ATH6KL_STATE_ON);
1180 }
1181
1182 if (!(ndev->flags & IFF_MULTICAST)) {
1183 mc_all_on = false;
1184 set_bit(NETDEV_MCAST_ALL_OFF, &vif->flags);
1185 } else {
1186 clear_bit(NETDEV_MCAST_ALL_OFF, &vif->flags);
1187 }
1188
1189 /* Enable/disable "multicast-all" filter*/
1190 ath6kl_dbg(ATH6KL_DBG_TRC, "%s multicast-all filter\n",
1191 mc_all_on ? "enabling" : "disabling");
1192
1193 ret = ath6kl_wmi_mcast_filter_cmd(vif->ar->wmi, vif->fw_vif_idx,
1194 mc_all_on);
1195 if (ret) {
1196 ath6kl_warn("Failed to %s multicast-all receive\n",
1197 mc_all_on ? "enable" : "disable");
1198 return;
1199 }
1200
1201 if (test_bit(NETDEV_MCAST_ALL_ON, &vif->flags))
1202 return;
1203
1204 /* Keep the driver and firmware mcast list in sync. */
1205 list_for_each_entry_safe(mc_filter, tmp, &vif->mc_filter, list) {
1206 found = false;
1207 netdev_for_each_mc_addr(ha, ndev) {
1208 if (memcmp(ha->addr, mc_filter->hw_addr,
1209 ATH6KL_MCAST_FILTER_MAC_ADDR_SIZE) == 0) {
1210 found = true;
1211 break;
1212 }
1213 }
1214
1215 if (!found) {
1216 /*
1217 * Delete the filter which was previously set
1218 * but not in the new request.
1219 */
1220 ath6kl_dbg(ATH6KL_DBG_TRC,
1221 "Removing %pM from multicast filter\n",
1222 mc_filter->hw_addr);
1223 ret = ath6kl_wmi_add_del_mcast_filter_cmd(vif->ar->wmi,
1224 vif->fw_vif_idx, mc_filter->hw_addr,
1225 false);
1226 if (ret) {
1227 ath6kl_warn("Failed to remove multicast filter:%pM\n",
1228 mc_filter->hw_addr);
1229 return;
1230 }
1231
1232 list_del(&mc_filter->list);
1233 kfree(mc_filter);
1234 }
1235 }
1236
1237 INIT_LIST_HEAD(&mc_filter_new);
1238
1239 netdev_for_each_mc_addr(ha, ndev) {
1240 found = false;
1241 list_for_each_entry(mc_filter, &vif->mc_filter, list) {
1242 if (memcmp(ha->addr, mc_filter->hw_addr,
1243 ATH6KL_MCAST_FILTER_MAC_ADDR_SIZE) == 0) {
1244 found = true;
1245 break;
1246 }
1247 }
1248
1249 if (!found) {
1250 mc_filter = kzalloc(sizeof(struct ath6kl_mc_filter),
1251 GFP_ATOMIC);
1252 if (!mc_filter) {
1253 WARN_ON(1);
1254 goto out;
1255 }
1256
1257 memcpy(mc_filter->hw_addr, ha->addr,
1258 ATH6KL_MCAST_FILTER_MAC_ADDR_SIZE);
1259 /* Set the multicast filter */
1260 ath6kl_dbg(ATH6KL_DBG_TRC,
1261 "Adding %pM to multicast filter list\n",
1262 mc_filter->hw_addr);
1263 ret = ath6kl_wmi_add_del_mcast_filter_cmd(vif->ar->wmi,
1264 vif->fw_vif_idx, mc_filter->hw_addr,
1265 true);
1266 if (ret) {
1267 ath6kl_warn("Failed to add multicast filter :%pM\n",
1268 mc_filter->hw_addr);
1269 kfree(mc_filter);
1270 goto out;
1271 }
1272
1273 list_add_tail(&mc_filter->list, &mc_filter_new);
1274 }
1275 }
1276
1277 out:
1278 list_splice_tail(&mc_filter_new, &vif->mc_filter);
1279 }
1280
1281 static const struct net_device_ops ath6kl_netdev_ops = {
1282 .ndo_open = ath6kl_open,
1283 .ndo_stop = ath6kl_close,
1284 .ndo_start_xmit = ath6kl_data_tx,
1285 .ndo_get_stats = ath6kl_get_stats,
1286 .ndo_set_features = ath6kl_set_features,
1287 .ndo_set_rx_mode = ath6kl_set_multicast_list,
1288 };
1289
init_netdev(struct net_device * dev)1290 void init_netdev(struct net_device *dev)
1291 {
1292 dev->netdev_ops = &ath6kl_netdev_ops;
1293 dev->destructor = free_netdev;
1294 dev->watchdog_timeo = ATH6KL_TX_TIMEOUT;
1295
1296 dev->needed_headroom = ETH_HLEN;
1297 dev->needed_headroom += roundup(sizeof(struct ath6kl_llc_snap_hdr) +
1298 sizeof(struct wmi_data_hdr) +
1299 HTC_HDR_LENGTH +
1300 WMI_MAX_TX_META_SZ +
1301 ATH6KL_HTC_ALIGN_BYTES, 4);
1302
1303 dev->hw_features |= NETIF_F_IP_CSUM | NETIF_F_RXCSUM;
1304
1305 return;
1306 }
1307