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 case WPA_PSK_AUTH:
393 case WPA2_PSK_AUTH:
394 case (WPA_PSK_AUTH | WPA2_PSK_AUTH):
395 if (!ik->valid)
396 break;
397
398 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
399 "Delayed addkey for the initial group key for AP mode\n");
400 memset(key_rsc, 0, sizeof(key_rsc));
401 res = ath6kl_wmi_addkey_cmd(
402 ar->wmi, vif->fw_vif_idx, ik->key_index, ik->key_type,
403 GROUP_USAGE, ik->key_len, key_rsc, ATH6KL_KEY_SEQ_LEN,
404 ik->key,
405 KEY_OP_INIT_VAL, NULL, SYNC_BOTH_WMIFLAG);
406 if (res) {
407 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
408 "Delayed addkey failed: %d\n", res);
409 }
410 break;
411 }
412
413 if (ar->last_ch != channel)
414 /* we actually don't know the phymode, default to HT20 */
415 ath6kl_cfg80211_ch_switch_notify(vif, channel, WMI_11G_HT20);
416
417 ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx, NONE_BSS_FILTER, 0);
418 set_bit(CONNECTED, &vif->flags);
419 netif_carrier_on(vif->ndev);
420 }
421
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)422 void ath6kl_connect_ap_mode_sta(struct ath6kl_vif *vif, u16 aid, u8 *mac_addr,
423 u8 keymgmt, u8 ucipher, u8 auth,
424 u8 assoc_req_len, u8 *assoc_info, u8 apsd_info)
425 {
426 u8 *ies = NULL, *wpa_ie = NULL, *pos;
427 size_t ies_len = 0;
428 struct station_info *sinfo;
429
430 ath6kl_dbg(ATH6KL_DBG_TRC, "new station %pM aid=%d\n", mac_addr, aid);
431
432 if (assoc_req_len > sizeof(struct ieee80211_hdr_3addr)) {
433 struct ieee80211_mgmt *mgmt =
434 (struct ieee80211_mgmt *) assoc_info;
435 if (ieee80211_is_assoc_req(mgmt->frame_control) &&
436 assoc_req_len >= sizeof(struct ieee80211_hdr_3addr) +
437 sizeof(mgmt->u.assoc_req)) {
438 ies = mgmt->u.assoc_req.variable;
439 ies_len = assoc_info + assoc_req_len - ies;
440 } else if (ieee80211_is_reassoc_req(mgmt->frame_control) &&
441 assoc_req_len >= sizeof(struct ieee80211_hdr_3addr)
442 + sizeof(mgmt->u.reassoc_req)) {
443 ies = mgmt->u.reassoc_req.variable;
444 ies_len = assoc_info + assoc_req_len - ies;
445 }
446 }
447
448 pos = ies;
449 while (pos && pos + 1 < ies + ies_len) {
450 if (pos + 2 + pos[1] > ies + ies_len)
451 break;
452 if (pos[0] == WLAN_EID_RSN)
453 wpa_ie = pos; /* RSN IE */
454 else if (pos[0] == WLAN_EID_VENDOR_SPECIFIC &&
455 pos[1] >= 4 &&
456 pos[2] == 0x00 && pos[3] == 0x50 && pos[4] == 0xf2) {
457 if (pos[5] == 0x01)
458 wpa_ie = pos; /* WPA IE */
459 else if (pos[5] == 0x04) {
460 wpa_ie = pos; /* WPS IE */
461 break; /* overrides WPA/RSN IE */
462 }
463 } else if (pos[0] == 0x44 && wpa_ie == NULL) {
464 /*
465 * Note: WAPI Parameter Set IE re-uses Element ID that
466 * was officially allocated for BSS AC Access Delay. As
467 * such, we need to be a bit more careful on when
468 * parsing the frame. However, BSS AC Access Delay
469 * element is not supposed to be included in
470 * (Re)Association Request frames, so this should not
471 * cause problems.
472 */
473 wpa_ie = pos; /* WAPI IE */
474 break;
475 }
476 pos += 2 + pos[1];
477 }
478
479 ath6kl_add_new_sta(vif, mac_addr, aid, wpa_ie,
480 wpa_ie ? 2 + wpa_ie[1] : 0,
481 keymgmt, ucipher, auth, apsd_info);
482
483 /* send event to application */
484 sinfo = kzalloc(sizeof(*sinfo), GFP_KERNEL);
485 if (!sinfo)
486 return;
487
488 /* TODO: sinfo.generation */
489
490 sinfo->assoc_req_ies = ies;
491 sinfo->assoc_req_ies_len = ies_len;
492
493 cfg80211_new_sta(vif->ndev, mac_addr, sinfo, GFP_KERNEL);
494
495 netif_wake_queue(vif->ndev);
496
497 kfree(sinfo);
498 }
499
disconnect_timer_handler(struct timer_list * t)500 void disconnect_timer_handler(struct timer_list *t)
501 {
502 struct ath6kl_vif *vif = from_timer(vif, t, disconnect_timer);
503
504 ath6kl_init_profile_info(vif);
505 ath6kl_disconnect(vif);
506 }
507
ath6kl_disconnect(struct ath6kl_vif * vif)508 void ath6kl_disconnect(struct ath6kl_vif *vif)
509 {
510 if (test_bit(CONNECTED, &vif->flags) ||
511 test_bit(CONNECT_PEND, &vif->flags)) {
512 ath6kl_wmi_disconnect_cmd(vif->ar->wmi, vif->fw_vif_idx);
513 /*
514 * Disconnect command is issued, clear the connect pending
515 * flag. The connected flag will be cleared in
516 * disconnect event notification.
517 */
518 clear_bit(CONNECT_PEND, &vif->flags);
519 }
520 }
521
522 /* WMI Event handlers */
523
ath6kl_ready_event(void * devt,u8 * datap,u32 sw_ver,u32 abi_ver,enum wmi_phy_cap cap)524 void ath6kl_ready_event(void *devt, u8 *datap, u32 sw_ver, u32 abi_ver,
525 enum wmi_phy_cap cap)
526 {
527 struct ath6kl *ar = devt;
528
529 memcpy(ar->mac_addr, datap, ETH_ALEN);
530
531 ath6kl_dbg(ATH6KL_DBG_BOOT,
532 "ready event mac addr %pM sw_ver 0x%x abi_ver 0x%x cap 0x%x\n",
533 ar->mac_addr, sw_ver, abi_ver, cap);
534
535 ar->version.wlan_ver = sw_ver;
536 ar->version.abi_ver = abi_ver;
537 ar->hw.cap = cap;
538
539 if (strlen(ar->wiphy->fw_version) == 0) {
540 snprintf(ar->wiphy->fw_version,
541 sizeof(ar->wiphy->fw_version),
542 "%u.%u.%u.%u",
543 (ar->version.wlan_ver & 0xf0000000) >> 28,
544 (ar->version.wlan_ver & 0x0f000000) >> 24,
545 (ar->version.wlan_ver & 0x00ff0000) >> 16,
546 (ar->version.wlan_ver & 0x0000ffff));
547 }
548
549 /* indicate to the waiting thread that the ready event was received */
550 set_bit(WMI_READY, &ar->flag);
551 wake_up(&ar->event_wq);
552 }
553
ath6kl_scan_complete_evt(struct ath6kl_vif * vif,int status)554 void ath6kl_scan_complete_evt(struct ath6kl_vif *vif, int status)
555 {
556 struct ath6kl *ar = vif->ar;
557 bool aborted = false;
558
559 if (status != WMI_SCAN_STATUS_SUCCESS)
560 aborted = true;
561
562 ath6kl_cfg80211_scan_complete_event(vif, aborted);
563
564 if (!ar->usr_bss_filter) {
565 clear_bit(CLEAR_BSSFILTER_ON_BEACON, &vif->flags);
566 ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx,
567 NONE_BSS_FILTER, 0);
568 }
569
570 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "scan complete: %d\n", status);
571 }
572
ath6kl_commit_ch_switch(struct ath6kl_vif * vif,u16 channel)573 static int ath6kl_commit_ch_switch(struct ath6kl_vif *vif, u16 channel)
574 {
575 struct ath6kl *ar = vif->ar;
576
577 vif->profile.ch = cpu_to_le16(channel);
578
579 switch (vif->nw_type) {
580 case AP_NETWORK:
581 /*
582 * reconfigure any saved RSN IE capabilites in the beacon /
583 * probe response to stay in sync with the supplicant.
584 */
585 if (vif->rsn_capab &&
586 test_bit(ATH6KL_FW_CAPABILITY_RSN_CAP_OVERRIDE,
587 ar->fw_capabilities))
588 ath6kl_wmi_set_ie_cmd(ar->wmi, vif->fw_vif_idx,
589 WLAN_EID_RSN, WMI_RSN_IE_CAPB,
590 (const u8 *) &vif->rsn_capab,
591 sizeof(vif->rsn_capab));
592
593 return ath6kl_wmi_ap_profile_commit(ar->wmi, vif->fw_vif_idx,
594 &vif->profile);
595 default:
596 ath6kl_err("won't switch channels nw_type=%d\n", vif->nw_type);
597 return -ENOTSUPP;
598 }
599 }
600
ath6kl_check_ch_switch(struct ath6kl * ar,u16 channel)601 static void ath6kl_check_ch_switch(struct ath6kl *ar, u16 channel)
602 {
603 struct ath6kl_vif *vif;
604 int res = 0;
605
606 if (!ar->want_ch_switch)
607 return;
608
609 spin_lock_bh(&ar->list_lock);
610 list_for_each_entry(vif, &ar->vif_list, list) {
611 if (ar->want_ch_switch & (1 << vif->fw_vif_idx))
612 res = ath6kl_commit_ch_switch(vif, channel);
613
614 /* if channel switch failed, oh well we tried */
615 ar->want_ch_switch &= ~(1 << vif->fw_vif_idx);
616
617 if (res)
618 ath6kl_err("channel switch failed nw_type %d res %d\n",
619 vif->nw_type, res);
620 }
621 spin_unlock_bh(&ar->list_lock);
622 }
623
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)624 void ath6kl_connect_event(struct ath6kl_vif *vif, u16 channel, u8 *bssid,
625 u16 listen_int, u16 beacon_int,
626 enum network_type net_type, u8 beacon_ie_len,
627 u8 assoc_req_len, u8 assoc_resp_len,
628 u8 *assoc_info)
629 {
630 struct ath6kl *ar = vif->ar;
631
632 ath6kl_cfg80211_connect_event(vif, channel, bssid,
633 listen_int, beacon_int,
634 net_type, beacon_ie_len,
635 assoc_req_len, assoc_resp_len,
636 assoc_info);
637
638 memcpy(vif->bssid, bssid, sizeof(vif->bssid));
639 vif->bss_ch = channel;
640
641 if ((vif->nw_type == INFRA_NETWORK)) {
642 ath6kl_wmi_listeninterval_cmd(ar->wmi, vif->fw_vif_idx,
643 vif->listen_intvl_t, 0);
644 ath6kl_check_ch_switch(ar, channel);
645 }
646
647 netif_wake_queue(vif->ndev);
648
649 /* Update connect & link status atomically */
650 spin_lock_bh(&vif->if_lock);
651 set_bit(CONNECTED, &vif->flags);
652 clear_bit(CONNECT_PEND, &vif->flags);
653 netif_carrier_on(vif->ndev);
654 spin_unlock_bh(&vif->if_lock);
655
656 aggr_reset_state(vif->aggr_cntxt->aggr_conn);
657 vif->reconnect_flag = 0;
658
659 if ((vif->nw_type == ADHOC_NETWORK) && ar->ibss_ps_enable) {
660 memset(ar->node_map, 0, sizeof(ar->node_map));
661 ar->node_num = 0;
662 ar->next_ep_id = ENDPOINT_2;
663 }
664
665 if (!ar->usr_bss_filter) {
666 set_bit(CLEAR_BSSFILTER_ON_BEACON, &vif->flags);
667 ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx,
668 CURRENT_BSS_FILTER, 0);
669 }
670 }
671
ath6kl_tkip_micerr_event(struct ath6kl_vif * vif,u8 keyid,bool ismcast)672 void ath6kl_tkip_micerr_event(struct ath6kl_vif *vif, u8 keyid, bool ismcast)
673 {
674 struct ath6kl_sta *sta;
675 struct ath6kl *ar = vif->ar;
676 u8 tsc[6];
677
678 /*
679 * For AP case, keyid will have aid of STA which sent pkt with
680 * MIC error. Use this aid to get MAC & send it to hostapd.
681 */
682 if (vif->nw_type == AP_NETWORK) {
683 sta = ath6kl_find_sta_by_aid(ar, (keyid >> 2));
684 if (!sta)
685 return;
686
687 ath6kl_dbg(ATH6KL_DBG_TRC,
688 "ap tkip mic error received from aid=%d\n", keyid);
689
690 memset(tsc, 0, sizeof(tsc)); /* FIX: get correct TSC */
691 cfg80211_michael_mic_failure(vif->ndev, sta->mac,
692 NL80211_KEYTYPE_PAIRWISE, keyid,
693 tsc, GFP_KERNEL);
694 } else {
695 ath6kl_cfg80211_tkip_micerr_event(vif, keyid, ismcast);
696 }
697 }
698
ath6kl_update_target_stats(struct ath6kl_vif * vif,u8 * ptr,u32 len)699 static void ath6kl_update_target_stats(struct ath6kl_vif *vif, u8 *ptr, u32 len)
700 {
701 struct wmi_target_stats *tgt_stats =
702 (struct wmi_target_stats *) ptr;
703 struct ath6kl *ar = vif->ar;
704 struct target_stats *stats = &vif->target_stats;
705 struct tkip_ccmp_stats *ccmp_stats;
706 s32 rate;
707 u8 ac;
708
709 if (len < sizeof(*tgt_stats))
710 return;
711
712 ath6kl_dbg(ATH6KL_DBG_TRC, "updating target stats\n");
713
714 stats->tx_pkt += le32_to_cpu(tgt_stats->stats.tx.pkt);
715 stats->tx_byte += le32_to_cpu(tgt_stats->stats.tx.byte);
716 stats->tx_ucast_pkt += le32_to_cpu(tgt_stats->stats.tx.ucast_pkt);
717 stats->tx_ucast_byte += le32_to_cpu(tgt_stats->stats.tx.ucast_byte);
718 stats->tx_mcast_pkt += le32_to_cpu(tgt_stats->stats.tx.mcast_pkt);
719 stats->tx_mcast_byte += le32_to_cpu(tgt_stats->stats.tx.mcast_byte);
720 stats->tx_bcast_pkt += le32_to_cpu(tgt_stats->stats.tx.bcast_pkt);
721 stats->tx_bcast_byte += le32_to_cpu(tgt_stats->stats.tx.bcast_byte);
722 stats->tx_rts_success_cnt +=
723 le32_to_cpu(tgt_stats->stats.tx.rts_success_cnt);
724
725 for (ac = 0; ac < WMM_NUM_AC; ac++)
726 stats->tx_pkt_per_ac[ac] +=
727 le32_to_cpu(tgt_stats->stats.tx.pkt_per_ac[ac]);
728
729 stats->tx_err += le32_to_cpu(tgt_stats->stats.tx.err);
730 stats->tx_fail_cnt += le32_to_cpu(tgt_stats->stats.tx.fail_cnt);
731 stats->tx_retry_cnt += le32_to_cpu(tgt_stats->stats.tx.retry_cnt);
732 stats->tx_mult_retry_cnt +=
733 le32_to_cpu(tgt_stats->stats.tx.mult_retry_cnt);
734 stats->tx_rts_fail_cnt +=
735 le32_to_cpu(tgt_stats->stats.tx.rts_fail_cnt);
736
737 rate = a_sle32_to_cpu(tgt_stats->stats.tx.ucast_rate);
738 stats->tx_ucast_rate = ath6kl_wmi_get_rate(ar->wmi, rate);
739
740 stats->rx_pkt += le32_to_cpu(tgt_stats->stats.rx.pkt);
741 stats->rx_byte += le32_to_cpu(tgt_stats->stats.rx.byte);
742 stats->rx_ucast_pkt += le32_to_cpu(tgt_stats->stats.rx.ucast_pkt);
743 stats->rx_ucast_byte += le32_to_cpu(tgt_stats->stats.rx.ucast_byte);
744 stats->rx_mcast_pkt += le32_to_cpu(tgt_stats->stats.rx.mcast_pkt);
745 stats->rx_mcast_byte += le32_to_cpu(tgt_stats->stats.rx.mcast_byte);
746 stats->rx_bcast_pkt += le32_to_cpu(tgt_stats->stats.rx.bcast_pkt);
747 stats->rx_bcast_byte += le32_to_cpu(tgt_stats->stats.rx.bcast_byte);
748 stats->rx_frgment_pkt += le32_to_cpu(tgt_stats->stats.rx.frgment_pkt);
749 stats->rx_err += le32_to_cpu(tgt_stats->stats.rx.err);
750 stats->rx_crc_err += le32_to_cpu(tgt_stats->stats.rx.crc_err);
751 stats->rx_key_cache_miss +=
752 le32_to_cpu(tgt_stats->stats.rx.key_cache_miss);
753 stats->rx_decrypt_err += le32_to_cpu(tgt_stats->stats.rx.decrypt_err);
754 stats->rx_dupl_frame += le32_to_cpu(tgt_stats->stats.rx.dupl_frame);
755
756 rate = a_sle32_to_cpu(tgt_stats->stats.rx.ucast_rate);
757 stats->rx_ucast_rate = ath6kl_wmi_get_rate(ar->wmi, rate);
758
759 ccmp_stats = &tgt_stats->stats.tkip_ccmp_stats;
760
761 stats->tkip_local_mic_fail +=
762 le32_to_cpu(ccmp_stats->tkip_local_mic_fail);
763 stats->tkip_cnter_measures_invoked +=
764 le32_to_cpu(ccmp_stats->tkip_cnter_measures_invoked);
765 stats->tkip_fmt_err += le32_to_cpu(ccmp_stats->tkip_fmt_err);
766
767 stats->ccmp_fmt_err += le32_to_cpu(ccmp_stats->ccmp_fmt_err);
768 stats->ccmp_replays += le32_to_cpu(ccmp_stats->ccmp_replays);
769
770 stats->pwr_save_fail_cnt +=
771 le32_to_cpu(tgt_stats->pm_stats.pwr_save_failure_cnt);
772 stats->noise_floor_calib =
773 a_sle32_to_cpu(tgt_stats->noise_floor_calib);
774
775 stats->cs_bmiss_cnt +=
776 le32_to_cpu(tgt_stats->cserv_stats.cs_bmiss_cnt);
777 stats->cs_low_rssi_cnt +=
778 le32_to_cpu(tgt_stats->cserv_stats.cs_low_rssi_cnt);
779 stats->cs_connect_cnt +=
780 le16_to_cpu(tgt_stats->cserv_stats.cs_connect_cnt);
781 stats->cs_discon_cnt +=
782 le16_to_cpu(tgt_stats->cserv_stats.cs_discon_cnt);
783
784 stats->cs_ave_beacon_rssi =
785 a_sle16_to_cpu(tgt_stats->cserv_stats.cs_ave_beacon_rssi);
786
787 stats->cs_last_roam_msec =
788 tgt_stats->cserv_stats.cs_last_roam_msec;
789 stats->cs_snr = tgt_stats->cserv_stats.cs_snr;
790 stats->cs_rssi = a_sle16_to_cpu(tgt_stats->cserv_stats.cs_rssi);
791
792 stats->lq_val = le32_to_cpu(tgt_stats->lq_val);
793
794 stats->wow_pkt_dropped +=
795 le32_to_cpu(tgt_stats->wow_stats.wow_pkt_dropped);
796 stats->wow_host_pkt_wakeups +=
797 tgt_stats->wow_stats.wow_host_pkt_wakeups;
798 stats->wow_host_evt_wakeups +=
799 tgt_stats->wow_stats.wow_host_evt_wakeups;
800 stats->wow_evt_discarded +=
801 le16_to_cpu(tgt_stats->wow_stats.wow_evt_discarded);
802
803 stats->arp_received = le32_to_cpu(tgt_stats->arp_stats.arp_received);
804 stats->arp_replied = le32_to_cpu(tgt_stats->arp_stats.arp_replied);
805 stats->arp_matched = le32_to_cpu(tgt_stats->arp_stats.arp_matched);
806
807 if (test_bit(STATS_UPDATE_PEND, &vif->flags)) {
808 clear_bit(STATS_UPDATE_PEND, &vif->flags);
809 wake_up(&ar->event_wq);
810 }
811 }
812
ath6kl_add_le32(__le32 * var,__le32 val)813 static void ath6kl_add_le32(__le32 *var, __le32 val)
814 {
815 *var = cpu_to_le32(le32_to_cpu(*var) + le32_to_cpu(val));
816 }
817
ath6kl_tgt_stats_event(struct ath6kl_vif * vif,u8 * ptr,u32 len)818 void ath6kl_tgt_stats_event(struct ath6kl_vif *vif, u8 *ptr, u32 len)
819 {
820 struct wmi_ap_mode_stat *p = (struct wmi_ap_mode_stat *) ptr;
821 struct ath6kl *ar = vif->ar;
822 struct wmi_ap_mode_stat *ap = &ar->ap_stats;
823 struct wmi_per_sta_stat *st_ap, *st_p;
824 u8 ac;
825
826 if (vif->nw_type == AP_NETWORK) {
827 if (len < sizeof(*p))
828 return;
829
830 for (ac = 0; ac < AP_MAX_NUM_STA; ac++) {
831 st_ap = &ap->sta[ac];
832 st_p = &p->sta[ac];
833
834 ath6kl_add_le32(&st_ap->tx_bytes, st_p->tx_bytes);
835 ath6kl_add_le32(&st_ap->tx_pkts, st_p->tx_pkts);
836 ath6kl_add_le32(&st_ap->tx_error, st_p->tx_error);
837 ath6kl_add_le32(&st_ap->tx_discard, st_p->tx_discard);
838 ath6kl_add_le32(&st_ap->rx_bytes, st_p->rx_bytes);
839 ath6kl_add_le32(&st_ap->rx_pkts, st_p->rx_pkts);
840 ath6kl_add_le32(&st_ap->rx_error, st_p->rx_error);
841 ath6kl_add_le32(&st_ap->rx_discard, st_p->rx_discard);
842 }
843
844 } else {
845 ath6kl_update_target_stats(vif, ptr, len);
846 }
847 }
848
ath6kl_wakeup_event(void * dev)849 void ath6kl_wakeup_event(void *dev)
850 {
851 struct ath6kl *ar = (struct ath6kl *) dev;
852
853 wake_up(&ar->event_wq);
854 }
855
ath6kl_txpwr_rx_evt(void * devt,u8 tx_pwr)856 void ath6kl_txpwr_rx_evt(void *devt, u8 tx_pwr)
857 {
858 struct ath6kl *ar = (struct ath6kl *) devt;
859
860 ar->tx_pwr = tx_pwr;
861 wake_up(&ar->event_wq);
862 }
863
ath6kl_pspoll_event(struct ath6kl_vif * vif,u8 aid)864 void ath6kl_pspoll_event(struct ath6kl_vif *vif, u8 aid)
865 {
866 struct ath6kl_sta *conn;
867 struct sk_buff *skb;
868 bool psq_empty = false;
869 struct ath6kl *ar = vif->ar;
870 struct ath6kl_mgmt_buff *mgmt_buf;
871
872 conn = ath6kl_find_sta_by_aid(ar, aid);
873
874 if (!conn)
875 return;
876 /*
877 * Send out a packet queued on ps queue. When the ps queue
878 * becomes empty update the PVB for this station.
879 */
880 spin_lock_bh(&conn->psq_lock);
881 psq_empty = skb_queue_empty(&conn->psq) && (conn->mgmt_psq_len == 0);
882 spin_unlock_bh(&conn->psq_lock);
883
884 if (psq_empty)
885 /* TODO: Send out a NULL data frame */
886 return;
887
888 spin_lock_bh(&conn->psq_lock);
889 if (conn->mgmt_psq_len > 0) {
890 mgmt_buf = list_first_entry(&conn->mgmt_psq,
891 struct ath6kl_mgmt_buff, list);
892 list_del(&mgmt_buf->list);
893 conn->mgmt_psq_len--;
894 spin_unlock_bh(&conn->psq_lock);
895
896 conn->sta_flags |= STA_PS_POLLED;
897 ath6kl_wmi_send_mgmt_cmd(ar->wmi, vif->fw_vif_idx,
898 mgmt_buf->id, mgmt_buf->freq,
899 mgmt_buf->wait, mgmt_buf->buf,
900 mgmt_buf->len, mgmt_buf->no_cck);
901 conn->sta_flags &= ~STA_PS_POLLED;
902 kfree(mgmt_buf);
903 } else {
904 skb = skb_dequeue(&conn->psq);
905 spin_unlock_bh(&conn->psq_lock);
906
907 conn->sta_flags |= STA_PS_POLLED;
908 ath6kl_data_tx(skb, vif->ndev);
909 conn->sta_flags &= ~STA_PS_POLLED;
910 }
911
912 spin_lock_bh(&conn->psq_lock);
913 psq_empty = skb_queue_empty(&conn->psq) && (conn->mgmt_psq_len == 0);
914 spin_unlock_bh(&conn->psq_lock);
915
916 if (psq_empty)
917 ath6kl_wmi_set_pvb_cmd(ar->wmi, vif->fw_vif_idx, conn->aid, 0);
918 }
919
ath6kl_dtimexpiry_event(struct ath6kl_vif * vif)920 void ath6kl_dtimexpiry_event(struct ath6kl_vif *vif)
921 {
922 bool mcastq_empty = false;
923 struct sk_buff *skb;
924 struct ath6kl *ar = vif->ar;
925
926 /*
927 * If there are no associated STAs, ignore the DTIM expiry event.
928 * There can be potential race conditions where the last associated
929 * STA may disconnect & before the host could clear the 'Indicate
930 * DTIM' request to the firmware, the firmware would have just
931 * indicated a DTIM expiry event. The race is between 'clear DTIM
932 * expiry cmd' going from the host to the firmware & the DTIM
933 * expiry event happening from the firmware to the host.
934 */
935 if (!ar->sta_list_index)
936 return;
937
938 spin_lock_bh(&ar->mcastpsq_lock);
939 mcastq_empty = skb_queue_empty(&ar->mcastpsq);
940 spin_unlock_bh(&ar->mcastpsq_lock);
941
942 if (mcastq_empty)
943 return;
944
945 /* set the STA flag to dtim_expired for the frame to go out */
946 set_bit(DTIM_EXPIRED, &vif->flags);
947
948 spin_lock_bh(&ar->mcastpsq_lock);
949 while ((skb = skb_dequeue(&ar->mcastpsq)) != NULL) {
950 spin_unlock_bh(&ar->mcastpsq_lock);
951
952 ath6kl_data_tx(skb, vif->ndev);
953
954 spin_lock_bh(&ar->mcastpsq_lock);
955 }
956 spin_unlock_bh(&ar->mcastpsq_lock);
957
958 clear_bit(DTIM_EXPIRED, &vif->flags);
959
960 /* clear the LSB of the BitMapCtl field of the TIM IE */
961 ath6kl_wmi_set_pvb_cmd(ar->wmi, vif->fw_vif_idx, MCAST_AID, 0);
962 }
963
ath6kl_disconnect_event(struct ath6kl_vif * vif,u8 reason,u8 * bssid,u8 assoc_resp_len,u8 * assoc_info,u16 prot_reason_status)964 void ath6kl_disconnect_event(struct ath6kl_vif *vif, u8 reason, u8 *bssid,
965 u8 assoc_resp_len, u8 *assoc_info,
966 u16 prot_reason_status)
967 {
968 struct ath6kl *ar = vif->ar;
969
970 if (vif->nw_type == AP_NETWORK) {
971 /* disconnect due to other STA vif switching channels */
972 if (reason == BSS_DISCONNECTED &&
973 prot_reason_status == WMI_AP_REASON_STA_ROAM) {
974 ar->want_ch_switch |= 1 << vif->fw_vif_idx;
975 /* bail back to this channel if STA vif fails connect */
976 ar->last_ch = le16_to_cpu(vif->profile.ch);
977 }
978
979 if (prot_reason_status == WMI_AP_REASON_MAX_STA) {
980 /* send max client reached notification to user space */
981 cfg80211_conn_failed(vif->ndev, bssid,
982 NL80211_CONN_FAIL_MAX_CLIENTS,
983 GFP_KERNEL);
984 }
985
986 if (prot_reason_status == WMI_AP_REASON_ACL) {
987 /* send blocked client notification to user space */
988 cfg80211_conn_failed(vif->ndev, bssid,
989 NL80211_CONN_FAIL_BLOCKED_CLIENT,
990 GFP_KERNEL);
991 }
992
993 if (!ath6kl_remove_sta(ar, bssid, prot_reason_status))
994 return;
995
996 /* if no more associated STAs, empty the mcast PS q */
997 if (ar->sta_list_index == 0) {
998 spin_lock_bh(&ar->mcastpsq_lock);
999 skb_queue_purge(&ar->mcastpsq);
1000 spin_unlock_bh(&ar->mcastpsq_lock);
1001
1002 /* clear the LSB of the TIM IE's BitMapCtl field */
1003 if (test_bit(WMI_READY, &ar->flag))
1004 ath6kl_wmi_set_pvb_cmd(ar->wmi, vif->fw_vif_idx,
1005 MCAST_AID, 0);
1006 }
1007
1008 if (!is_broadcast_ether_addr(bssid)) {
1009 /* send event to application */
1010 cfg80211_del_sta(vif->ndev, bssid, GFP_KERNEL);
1011 }
1012
1013 if (memcmp(vif->ndev->dev_addr, bssid, ETH_ALEN) == 0) {
1014 memset(vif->wep_key_list, 0, sizeof(vif->wep_key_list));
1015 clear_bit(CONNECTED, &vif->flags);
1016 }
1017 return;
1018 }
1019
1020 ath6kl_cfg80211_disconnect_event(vif, reason, bssid,
1021 assoc_resp_len, assoc_info,
1022 prot_reason_status);
1023
1024 aggr_reset_state(vif->aggr_cntxt->aggr_conn);
1025
1026 del_timer(&vif->disconnect_timer);
1027
1028 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "disconnect reason is %d\n", reason);
1029
1030 /*
1031 * If the event is due to disconnect cmd from the host, only they
1032 * the target would stop trying to connect. Under any other
1033 * condition, target would keep trying to connect.
1034 */
1035 if (reason == DISCONNECT_CMD) {
1036 if (!ar->usr_bss_filter && test_bit(WMI_READY, &ar->flag))
1037 ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx,
1038 NONE_BSS_FILTER, 0);
1039 } else {
1040 set_bit(CONNECT_PEND, &vif->flags);
1041 if (((reason == ASSOC_FAILED) &&
1042 (prot_reason_status == 0x11)) ||
1043 ((reason == ASSOC_FAILED) && (prot_reason_status == 0x0) &&
1044 (vif->reconnect_flag == 1))) {
1045 set_bit(CONNECTED, &vif->flags);
1046 return;
1047 }
1048 }
1049
1050 /* restart disconnected concurrent vifs waiting for new channel */
1051 ath6kl_check_ch_switch(ar, ar->last_ch);
1052
1053 /* update connect & link status atomically */
1054 spin_lock_bh(&vif->if_lock);
1055 clear_bit(CONNECTED, &vif->flags);
1056 netif_carrier_off(vif->ndev);
1057 spin_unlock_bh(&vif->if_lock);
1058
1059 if ((reason != CSERV_DISCONNECT) || (vif->reconnect_flag != 1))
1060 vif->reconnect_flag = 0;
1061
1062 if (reason != CSERV_DISCONNECT)
1063 ar->user_key_ctrl = 0;
1064
1065 netif_stop_queue(vif->ndev);
1066 memset(vif->bssid, 0, sizeof(vif->bssid));
1067 vif->bss_ch = 0;
1068
1069 ath6kl_tx_data_cleanup(ar);
1070 }
1071
ath6kl_vif_first(struct ath6kl * ar)1072 struct ath6kl_vif *ath6kl_vif_first(struct ath6kl *ar)
1073 {
1074 struct ath6kl_vif *vif;
1075
1076 spin_lock_bh(&ar->list_lock);
1077 if (list_empty(&ar->vif_list)) {
1078 spin_unlock_bh(&ar->list_lock);
1079 return NULL;
1080 }
1081
1082 vif = list_first_entry(&ar->vif_list, struct ath6kl_vif, list);
1083
1084 spin_unlock_bh(&ar->list_lock);
1085
1086 return vif;
1087 }
1088
ath6kl_open(struct net_device * dev)1089 static int ath6kl_open(struct net_device *dev)
1090 {
1091 struct ath6kl_vif *vif = netdev_priv(dev);
1092
1093 set_bit(WLAN_ENABLED, &vif->flags);
1094
1095 if (test_bit(CONNECTED, &vif->flags)) {
1096 netif_carrier_on(dev);
1097 netif_wake_queue(dev);
1098 } else {
1099 netif_carrier_off(dev);
1100 }
1101
1102 return 0;
1103 }
1104
ath6kl_close(struct net_device * dev)1105 static int ath6kl_close(struct net_device *dev)
1106 {
1107 struct ath6kl_vif *vif = netdev_priv(dev);
1108
1109 netif_stop_queue(dev);
1110
1111 ath6kl_cfg80211_stop(vif);
1112
1113 clear_bit(WLAN_ENABLED, &vif->flags);
1114
1115 return 0;
1116 }
1117
ath6kl_set_features(struct net_device * dev,netdev_features_t features)1118 static int ath6kl_set_features(struct net_device *dev,
1119 netdev_features_t features)
1120 {
1121 struct ath6kl_vif *vif = netdev_priv(dev);
1122 struct ath6kl *ar = vif->ar;
1123 int err = 0;
1124
1125 if ((features & NETIF_F_RXCSUM) &&
1126 (ar->rx_meta_ver != WMI_META_VERSION_2)) {
1127 ar->rx_meta_ver = WMI_META_VERSION_2;
1128 err = ath6kl_wmi_set_rx_frame_format_cmd(ar->wmi,
1129 vif->fw_vif_idx,
1130 ar->rx_meta_ver, 0, 0);
1131 if (err) {
1132 dev->features = features & ~NETIF_F_RXCSUM;
1133 return err;
1134 }
1135 } else if (!(features & NETIF_F_RXCSUM) &&
1136 (ar->rx_meta_ver == WMI_META_VERSION_2)) {
1137 ar->rx_meta_ver = 0;
1138 err = ath6kl_wmi_set_rx_frame_format_cmd(ar->wmi,
1139 vif->fw_vif_idx,
1140 ar->rx_meta_ver, 0, 0);
1141 if (err) {
1142 dev->features = features | NETIF_F_RXCSUM;
1143 return err;
1144 }
1145 }
1146
1147 return err;
1148 }
1149
ath6kl_set_multicast_list(struct net_device * ndev)1150 static void ath6kl_set_multicast_list(struct net_device *ndev)
1151 {
1152 struct ath6kl_vif *vif = netdev_priv(ndev);
1153 bool mc_all_on = false;
1154 int mc_count = netdev_mc_count(ndev);
1155 struct netdev_hw_addr *ha;
1156 bool found;
1157 struct ath6kl_mc_filter *mc_filter, *tmp;
1158 struct list_head mc_filter_new;
1159 int ret;
1160
1161 if (!test_bit(WMI_READY, &vif->ar->flag) ||
1162 !test_bit(WLAN_ENABLED, &vif->flags))
1163 return;
1164
1165 /* Enable multicast-all filter. */
1166 mc_all_on = !!(ndev->flags & IFF_PROMISC) ||
1167 !!(ndev->flags & IFF_ALLMULTI) ||
1168 !!(mc_count > ATH6K_MAX_MC_FILTERS_PER_LIST);
1169
1170 if (mc_all_on)
1171 set_bit(NETDEV_MCAST_ALL_ON, &vif->flags);
1172 else
1173 clear_bit(NETDEV_MCAST_ALL_ON, &vif->flags);
1174
1175 if (test_bit(ATH6KL_FW_CAPABILITY_WOW_MULTICAST_FILTER,
1176 vif->ar->fw_capabilities)) {
1177 mc_all_on = mc_all_on || (vif->ar->state == ATH6KL_STATE_ON);
1178 }
1179
1180 if (!(ndev->flags & IFF_MULTICAST)) {
1181 mc_all_on = false;
1182 set_bit(NETDEV_MCAST_ALL_OFF, &vif->flags);
1183 } else {
1184 clear_bit(NETDEV_MCAST_ALL_OFF, &vif->flags);
1185 }
1186
1187 /* Enable/disable "multicast-all" filter*/
1188 ath6kl_dbg(ATH6KL_DBG_TRC, "%s multicast-all filter\n",
1189 mc_all_on ? "enabling" : "disabling");
1190
1191 ret = ath6kl_wmi_mcast_filter_cmd(vif->ar->wmi, vif->fw_vif_idx,
1192 mc_all_on);
1193 if (ret) {
1194 ath6kl_warn("Failed to %s multicast-all receive\n",
1195 mc_all_on ? "enable" : "disable");
1196 return;
1197 }
1198
1199 if (test_bit(NETDEV_MCAST_ALL_ON, &vif->flags))
1200 return;
1201
1202 /* Keep the driver and firmware mcast list in sync. */
1203 list_for_each_entry_safe(mc_filter, tmp, &vif->mc_filter, list) {
1204 found = false;
1205 netdev_for_each_mc_addr(ha, ndev) {
1206 if (memcmp(ha->addr, mc_filter->hw_addr,
1207 ATH6KL_MCAST_FILTER_MAC_ADDR_SIZE) == 0) {
1208 found = true;
1209 break;
1210 }
1211 }
1212
1213 if (!found) {
1214 /*
1215 * Delete the filter which was previously set
1216 * but not in the new request.
1217 */
1218 ath6kl_dbg(ATH6KL_DBG_TRC,
1219 "Removing %pM from multicast filter\n",
1220 mc_filter->hw_addr);
1221 ret = ath6kl_wmi_add_del_mcast_filter_cmd(vif->ar->wmi,
1222 vif->fw_vif_idx, mc_filter->hw_addr,
1223 false);
1224 if (ret) {
1225 ath6kl_warn("Failed to remove multicast filter:%pM\n",
1226 mc_filter->hw_addr);
1227 return;
1228 }
1229
1230 list_del(&mc_filter->list);
1231 kfree(mc_filter);
1232 }
1233 }
1234
1235 INIT_LIST_HEAD(&mc_filter_new);
1236
1237 netdev_for_each_mc_addr(ha, ndev) {
1238 found = false;
1239 list_for_each_entry(mc_filter, &vif->mc_filter, list) {
1240 if (memcmp(ha->addr, mc_filter->hw_addr,
1241 ATH6KL_MCAST_FILTER_MAC_ADDR_SIZE) == 0) {
1242 found = true;
1243 break;
1244 }
1245 }
1246
1247 if (!found) {
1248 mc_filter = kzalloc(sizeof(struct ath6kl_mc_filter),
1249 GFP_ATOMIC);
1250 if (!mc_filter) {
1251 WARN_ON(1);
1252 goto out;
1253 }
1254
1255 memcpy(mc_filter->hw_addr, ha->addr,
1256 ATH6KL_MCAST_FILTER_MAC_ADDR_SIZE);
1257 /* Set the multicast filter */
1258 ath6kl_dbg(ATH6KL_DBG_TRC,
1259 "Adding %pM to multicast filter list\n",
1260 mc_filter->hw_addr);
1261 ret = ath6kl_wmi_add_del_mcast_filter_cmd(vif->ar->wmi,
1262 vif->fw_vif_idx, mc_filter->hw_addr,
1263 true);
1264 if (ret) {
1265 ath6kl_warn("Failed to add multicast filter :%pM\n",
1266 mc_filter->hw_addr);
1267 kfree(mc_filter);
1268 goto out;
1269 }
1270
1271 list_add_tail(&mc_filter->list, &mc_filter_new);
1272 }
1273 }
1274
1275 out:
1276 list_splice_tail(&mc_filter_new, &vif->mc_filter);
1277 }
1278
1279 static const struct net_device_ops ath6kl_netdev_ops = {
1280 .ndo_open = ath6kl_open,
1281 .ndo_stop = ath6kl_close,
1282 .ndo_start_xmit = ath6kl_data_tx,
1283 .ndo_set_features = ath6kl_set_features,
1284 .ndo_set_rx_mode = ath6kl_set_multicast_list,
1285 };
1286
init_netdev(struct net_device * dev)1287 void init_netdev(struct net_device *dev)
1288 {
1289 struct ath6kl *ar = ath6kl_priv(dev);
1290
1291 dev->netdev_ops = &ath6kl_netdev_ops;
1292 dev->needs_free_netdev = true;
1293 dev->watchdog_timeo = ATH6KL_TX_TIMEOUT;
1294
1295 dev->needed_headroom = ETH_HLEN;
1296 dev->needed_headroom += roundup(sizeof(struct ath6kl_llc_snap_hdr) +
1297 sizeof(struct wmi_data_hdr) +
1298 HTC_HDR_LENGTH +
1299 WMI_MAX_TX_META_SZ +
1300 ATH6KL_HTC_ALIGN_BYTES, 4);
1301
1302 if (!test_bit(ATH6KL_FW_CAPABILITY_NO_IP_CHECKSUM,
1303 ar->fw_capabilities))
1304 dev->hw_features |= NETIF_F_IP_CSUM | NETIF_F_RXCSUM;
1305
1306 return;
1307 }
1308
