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 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
ath6kl_find_sta_by_aid(struct ath6kl * ar,u8 aid)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
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)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
ath6kl_sta_cleanup(struct ath6kl * ar,u8 i)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
ath6kl_remove_sta(struct ath6kl * ar,u8 * mac,u16 reason)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
ath6kl_ac2_endpoint_id(void * devt,u8 ac)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
ath6kl_alloc_cookie(struct ath6kl * ar)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
ath6kl_cookie_init(struct ath6kl * ar)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
ath6kl_cookie_cleanup(struct ath6kl * ar)181 void ath6kl_cookie_cleanup(struct ath6kl *ar)
182 {
183 ar->cookie_list = NULL;
184 ar->cookie_count = 0;
185 }
186
ath6kl_free_cookie(struct ath6kl * ar,struct ath6kl_cookie * cookie)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 */
ath6kl_diag_read32(struct ath6kl * ar,u32 address,u32 * value)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 */
ath6kl_diag_write32(struct ath6kl * ar,u32 address,__le32 value)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
ath6kl_diag_read(struct ath6kl * ar,u32 address,void * data,u32 length)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
ath6kl_diag_write(struct ath6kl * ar,u32 address,void * data,u32 length)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
ath6kl_read_fwlogs(struct ath6kl * ar)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
ath6kl_install_static_wep_keys(struct ath6kl_vif * vif)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
ath6kl_connect_ap_mode_bss(struct ath6kl_vif * vif,u16 channel)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
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)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
disconnect_timer_handler(struct timer_list * t)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
ath6kl_disconnect(struct ath6kl_vif * vif)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
ath6kl_ready_event(void * devt,u8 * datap,u32 sw_ver,u32 abi_ver,enum wmi_phy_cap cap)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
ath6kl_scan_complete_evt(struct ath6kl_vif * vif,int status)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
ath6kl_commit_ch_switch(struct ath6kl_vif * vif,u16 channel)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
ath6kl_check_ch_switch(struct ath6kl * ar,u16 channel)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
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)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
ath6kl_tkip_micerr_event(struct ath6kl_vif * vif,u8 keyid,bool ismcast)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
ath6kl_update_target_stats(struct ath6kl_vif * vif,u8 * ptr,u32 len)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
ath6kl_add_le32(__le32 * var,__le32 val)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
ath6kl_tgt_stats_event(struct ath6kl_vif * vif,u8 * ptr,u32 len)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
ath6kl_wakeup_event(void * dev)853 void ath6kl_wakeup_event(void *dev)
854 {
855 struct ath6kl *ar = dev;
856
857 wake_up(&ar->event_wq);
858 }
859
ath6kl_txpwr_rx_evt(void * devt,u8 tx_pwr)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
ath6kl_pspoll_event(struct ath6kl_vif * vif,u8 aid)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
ath6kl_dtimexpiry_event(struct ath6kl_vif * vif)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
ath6kl_disconnect_event(struct ath6kl_vif * vif,u8 reason,u8 * bssid,u8 assoc_resp_len,u8 * assoc_info,u16 prot_reason_status)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
ath6kl_vif_first(struct ath6kl * ar)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
ath6kl_open(struct net_device * dev)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
ath6kl_close(struct net_device * dev)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
ath6kl_set_features(struct net_device * dev,netdev_features_t features)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
ath6kl_set_multicast_list(struct net_device * ndev)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
init_netdev(struct net_device * dev)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 }
1312