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Revert "libertas: Read buffer overflow"
[linux-2.6/mini2440.git] / drivers / net / wireless / libertas / assoc.c
blobb9b374119033f7fa92f04a0bfa7b6e8cf7e737ac
1 /* Copyright (C) 2006, Red Hat, Inc. */
2
3 #include <linux/types.h>
4 #include <linux/etherdevice.h>
5 #include <linux/ieee80211.h>
6 #include <linux/if_arp.h>
7 #include <net/lib80211.h>
8
9 #include "assoc.h"
10 #include "decl.h"
11 #include "host.h"
12 #include "scan.h"
13 #include "cmd.h"
14
15 static const u8 bssid_any[ETH_ALEN] __attribute__ ((aligned (2))) =
16 { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
17 static const u8 bssid_off[ETH_ALEN] __attribute__ ((aligned (2))) =
18 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
19
20 /* The firmware needs the following bits masked out of the beacon-derived
21 * capability field when associating/joining to a BSS:
22 * 9 (QoS), 11 (APSD), 12 (unused), 14 (unused), 15 (unused)
23 */
24 #define CAPINFO_MASK (~(0xda00))
25
26
27 /**
28 * @brief This function finds common rates between rates and card rates.
29 *
30 * It will fill common rates in rates as output if found.
31 *
32 * NOTE: Setting the MSB of the basic rates need to be taken
33 * care, either before or after calling this function
34 *
35 * @param priv A pointer to struct lbs_private structure
36 * @param rates the buffer which keeps input and output
37 * @param rates_size the size of rate1 buffer; new size of buffer on return
38 *
39 * @return 0 on success, or -1 on error
40 */
41 static int get_common_rates(struct lbs_private *priv,
42 u8 *rates,
43 u16 *rates_size)
44 {
45 u8 *card_rates = lbs_bg_rates;
46 size_t num_card_rates = sizeof(lbs_bg_rates);
47 int ret = 0, i, j;
48 u8 tmp[30];
49 size_t tmp_size = 0;
50
51 /* For each rate in card_rates that exists in rate1, copy to tmp */
52 for (i = 0; card_rates[i] && (i < num_card_rates); i++) {
53 for (j = 0; rates[j] && (j < *rates_size); j++) {
54 if (rates[j] == card_rates[i])
55 tmp[tmp_size++] = card_rates[i];
56 }
57 }
58
59 lbs_deb_hex(LBS_DEB_JOIN, "AP rates ", rates, *rates_size);
60 lbs_deb_hex(LBS_DEB_JOIN, "card rates ", card_rates, num_card_rates);
61 lbs_deb_hex(LBS_DEB_JOIN, "common rates", tmp, tmp_size);
62 lbs_deb_join("TX data rate 0x%02x\n", priv->cur_rate);
63
64 if (!priv->enablehwauto) {
65 for (i = 0; i < tmp_size; i++) {
66 if (tmp[i] == priv->cur_rate)
67 goto done;
68 }
69 lbs_pr_alert("Previously set fixed data rate %#x isn't "
70 "compatible with the network.\n", priv->cur_rate);
71 ret = -1;
72 goto done;
73 }
74 ret = 0;
75
76 done:
77 memset(rates, 0, *rates_size);
78 *rates_size = min_t(int, tmp_size, *rates_size);
79 memcpy(rates, tmp, *rates_size);
80 return ret;
81 }
82
83
84 /**
85 * @brief Sets the MSB on basic rates as the firmware requires
86 *
87 * Scan through an array and set the MSB for basic data rates.
88 *
89 * @param rates buffer of data rates
90 * @param len size of buffer
91 */
92 static void lbs_set_basic_rate_flags(u8 *rates, size_t len)
93 {
94 int i;
95
96 for (i = 0; i < len; i++) {
97 if (rates[i] == 0x02 || rates[i] == 0x04 ||
98 rates[i] == 0x0b || rates[i] == 0x16)
99 rates[i] |= 0x80;
100 }
101 }
102
103
104 static u8 iw_auth_to_ieee_auth(u8 auth)
105 {
106 if (auth == IW_AUTH_ALG_OPEN_SYSTEM)
107 return 0x00;
108 else if (auth == IW_AUTH_ALG_SHARED_KEY)
109 return 0x01;
110 else if (auth == IW_AUTH_ALG_LEAP)
111 return 0x80;
112
113 lbs_deb_join("%s: invalid auth alg 0x%X\n", __func__, auth);
114 return 0;
115 }
116
117 /**
118 * @brief This function prepares the authenticate command. AUTHENTICATE only
119 * sets the authentication suite for future associations, as the firmware
120 * handles authentication internally during the ASSOCIATE command.
121 *
122 * @param priv A pointer to struct lbs_private structure
123 * @param bssid The peer BSSID with which to authenticate
124 * @param auth The authentication mode to use (from wireless.h)
125 *
126 * @return 0 or -1
127 */
128 static int lbs_set_authentication(struct lbs_private *priv, u8 bssid[6], u8 auth)
129 {
130 struct cmd_ds_802_11_authenticate cmd;
131 int ret = -1;
132 DECLARE_MAC_BUF(mac);
133
134 lbs_deb_enter(LBS_DEB_JOIN);
135
136 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
137 memcpy(cmd.bssid, bssid, ETH_ALEN);
138
139 cmd.authtype = iw_auth_to_ieee_auth(auth);
140
141 lbs_deb_join("AUTH_CMD: BSSID %s, auth 0x%x\n",
142 print_mac(mac, bssid), cmd.authtype);
143
144 ret = lbs_cmd_with_response(priv, CMD_802_11_AUTHENTICATE, &cmd);
145
146 lbs_deb_leave_args(LBS_DEB_JOIN, "ret %d", ret);
147 return ret;
148 }
149
150
151 static int lbs_assoc_post(struct lbs_private *priv,
152 struct cmd_ds_802_11_associate_response *resp)
153 {
154 int ret = 0;
155 union iwreq_data wrqu;
156 struct bss_descriptor *bss;
157 u16 status_code;
158
159 lbs_deb_enter(LBS_DEB_ASSOC);
160
161 if (!priv->in_progress_assoc_req) {
162 lbs_deb_assoc("ASSOC_RESP: no in-progress assoc request\n");
163 ret = -1;
164 goto done;
165 }
166 bss = &priv->in_progress_assoc_req->bss;
167
168 /*
169 * Older FW versions map the IEEE 802.11 Status Code in the association
170 * response to the following values returned in resp->statuscode:
171 *
172 * IEEE Status Code Marvell Status Code
173 * 0 -> 0x0000 ASSOC_RESULT_SUCCESS
174 * 13 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED
175 * 14 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED
176 * 15 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED
177 * 16 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED
178 * others -> 0x0003 ASSOC_RESULT_REFUSED
179 *
180 * Other response codes:
181 * 0x0001 -> ASSOC_RESULT_INVALID_PARAMETERS (unused)
182 * 0x0002 -> ASSOC_RESULT_TIMEOUT (internal timer expired waiting for
183 * association response from the AP)
184 */
185
186 status_code = le16_to_cpu(resp->statuscode);
187 if (priv->fwrelease < 0x09000000) {
188 switch (status_code) {
189 case 0x00:
190 break;
191 case 0x01:
192 lbs_deb_assoc("ASSOC_RESP: invalid parameters\n");
193 break;
194 case 0x02:
195 lbs_deb_assoc("ASSOC_RESP: internal timer "
196 "expired while waiting for the AP\n");
197 break;
198 case 0x03:
199 lbs_deb_assoc("ASSOC_RESP: association "
200 "refused by AP\n");
201 break;
202 case 0x04:
203 lbs_deb_assoc("ASSOC_RESP: authentication "
204 "refused by AP\n");
205 break;
206 default:
207 lbs_deb_assoc("ASSOC_RESP: failure reason 0x%02x "
208 " unknown\n", status_code);
209 break;
210 }
211 } else {
212 /* v9+ returns the AP's association response */
213 lbs_deb_assoc("ASSOC_RESP: failure reason 0x%02x\n", status_code);
214 }
215
216 if (status_code) {
217 lbs_mac_event_disconnected(priv);
218 ret = -1;
219 goto done;
220 }
221
222 lbs_deb_hex(LBS_DEB_ASSOC, "ASSOC_RESP",
223 (void *) (resp + sizeof (resp->hdr)),
224 le16_to_cpu(resp->hdr.size) - sizeof (resp->hdr));
225
226 /* Send a Media Connected event, according to the Spec */
227 priv->connect_status = LBS_CONNECTED;
228
229 /* Update current SSID and BSSID */
230 memcpy(&priv->curbssparams.ssid, &bss->ssid, IW_ESSID_MAX_SIZE);
231 priv->curbssparams.ssid_len = bss->ssid_len;
232 memcpy(priv->curbssparams.bssid, bss->bssid, ETH_ALEN);
233
234 priv->SNR[TYPE_RXPD][TYPE_AVG] = 0;
235 priv->NF[TYPE_RXPD][TYPE_AVG] = 0;
236
237 memset(priv->rawSNR, 0x00, sizeof(priv->rawSNR));
238 memset(priv->rawNF, 0x00, sizeof(priv->rawNF));
239 priv->nextSNRNF = 0;
240 priv->numSNRNF = 0;
241
242 netif_carrier_on(priv->dev);
243 if (!priv->tx_pending_len)
244 netif_wake_queue(priv->dev);
245
246 memcpy(wrqu.ap_addr.sa_data, priv->curbssparams.bssid, ETH_ALEN);
247 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
248 wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
249
250 done:
251 lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
252 return ret;
253 }
254
255 /**
256 * @brief This function prepares an association-class command.
257 *
258 * @param priv A pointer to struct lbs_private structure
259 * @param assoc_req The association request describing the BSS to associate
260 * or reassociate with
261 * @param command The actual command, either CMD_802_11_ASSOCIATE or
262 * CMD_802_11_REASSOCIATE
263 *
264 * @return 0 or -1
265 */
266 static int lbs_associate(struct lbs_private *priv,
267 struct assoc_request *assoc_req,
268 u16 command)
269 {
270 struct cmd_ds_802_11_associate cmd;
271 int ret = 0;
272 struct bss_descriptor *bss = &assoc_req->bss;
273 u8 *pos = &(cmd.iebuf[0]);
274 u16 tmpcap, tmplen, tmpauth;
275 struct mrvl_ie_ssid_param_set *ssid;
276 struct mrvl_ie_ds_param_set *ds;
277 struct mrvl_ie_cf_param_set *cf;
278 struct mrvl_ie_rates_param_set *rates;
279 struct mrvl_ie_rsn_param_set *rsn;
280 struct mrvl_ie_auth_type *auth;
281
282 lbs_deb_enter(LBS_DEB_ASSOC);
283
284 BUG_ON((command != CMD_802_11_ASSOCIATE) &&
285 (command != CMD_802_11_REASSOCIATE));
286
287 memset(&cmd, 0, sizeof(cmd));
288 cmd.hdr.command = cpu_to_le16(command);
289
290 /* Fill in static fields */
291 memcpy(cmd.bssid, bss->bssid, ETH_ALEN);
292 cmd.listeninterval = cpu_to_le16(MRVDRV_DEFAULT_LISTEN_INTERVAL);
293
294 /* Capability info */
295 tmpcap = (bss->capability & CAPINFO_MASK);
296 if (bss->mode == IW_MODE_INFRA)
297 tmpcap |= WLAN_CAPABILITY_ESS;
298 cmd.capability = cpu_to_le16(tmpcap);
299 lbs_deb_assoc("ASSOC_CMD: capability 0x%04x\n", tmpcap);
300
301 /* SSID */
302 ssid = (struct mrvl_ie_ssid_param_set *) pos;
303 ssid->header.type = cpu_to_le16(TLV_TYPE_SSID);
304 tmplen = bss->ssid_len;
305 ssid->header.len = cpu_to_le16(tmplen);
306 memcpy(ssid->ssid, bss->ssid, tmplen);
307 pos += sizeof(ssid->header) + tmplen;
308
309 ds = (struct mrvl_ie_ds_param_set *) pos;
310 ds->header.type = cpu_to_le16(TLV_TYPE_PHY_DS);
311 ds->header.len = cpu_to_le16(1);
312 ds->channel = bss->phy.ds.channel;
313 pos += sizeof(ds->header) + 1;
314
315 cf = (struct mrvl_ie_cf_param_set *) pos;
316 cf->header.type = cpu_to_le16(TLV_TYPE_CF);
317 tmplen = sizeof(*cf) - sizeof (cf->header);
318 cf->header.len = cpu_to_le16(tmplen);
319 /* IE payload should be zeroed, firmware fills it in for us */
320 pos += sizeof(*cf);
321
322 rates = (struct mrvl_ie_rates_param_set *) pos;
323 rates->header.type = cpu_to_le16(TLV_TYPE_RATES);
324 memcpy(&rates->rates, &bss->rates, MAX_RATES);
325 tmplen = MAX_RATES;
326 if (get_common_rates(priv, rates->rates, &tmplen)) {
327 ret = -1;
328 goto done;
329 }
330 pos += sizeof(rates->header) + tmplen;
331 rates->header.len = cpu_to_le16(tmplen);
332 lbs_deb_assoc("ASSOC_CMD: num rates %u\n", tmplen);
333
334 /* Copy the infra. association rates into Current BSS state structure */
335 memset(&priv->curbssparams.rates, 0, sizeof(priv->curbssparams.rates));
336 memcpy(&priv->curbssparams.rates, &rates->rates, tmplen);
337
338 /* Set MSB on basic rates as the firmware requires, but _after_
339 * copying to current bss rates.
340 */
341 lbs_set_basic_rate_flags(rates->rates, tmplen);
342
343 /* Firmware v9+ indicate authentication suites as a TLV */
344 if (priv->fwrelease >= 0x09000000) {
345 DECLARE_MAC_BUF(mac);
346
347 auth = (struct mrvl_ie_auth_type *) pos;
348 auth->header.type = cpu_to_le16(TLV_TYPE_AUTH_TYPE);
349 auth->header.len = cpu_to_le16(2);
350 tmpauth = iw_auth_to_ieee_auth(priv->secinfo.auth_mode);
351 auth->auth = cpu_to_le16(tmpauth);
352 pos += sizeof(auth->header) + 2;
353
354 lbs_deb_join("AUTH_CMD: BSSID %s, auth 0x%x\n",
355 print_mac(mac, bss->bssid), priv->secinfo.auth_mode);
356 }
357
358 /* WPA/WPA2 IEs */
359 if (assoc_req->secinfo.WPAenabled || assoc_req->secinfo.WPA2enabled) {
360 rsn = (struct mrvl_ie_rsn_param_set *) pos;
361 /* WPA_IE or WPA2_IE */
362 rsn->header.type = cpu_to_le16((u16) assoc_req->wpa_ie[0]);
363 tmplen = (u16) assoc_req->wpa_ie[1];
364 rsn->header.len = cpu_to_le16(tmplen);
365 memcpy(rsn->rsnie, &assoc_req->wpa_ie[2], tmplen);
366 lbs_deb_hex(LBS_DEB_JOIN, "ASSOC_CMD: WPA/RSN IE", (u8 *) rsn,
367 sizeof(rsn->header) + tmplen);
368 pos += sizeof(rsn->header) + tmplen;
369 }
370
371 cmd.hdr.size = cpu_to_le16((sizeof(cmd) - sizeof(cmd.iebuf)) +
372 (u16)(pos - (u8 *) &cmd.iebuf));
373
374 /* update curbssparams */
375 priv->curbssparams.channel = bss->phy.ds.channel;
376
377 if (lbs_parse_dnld_countryinfo_11d(priv, bss)) {
378 ret = -1;
379 goto done;
380 }
381
382 ret = lbs_cmd_with_response(priv, command, &cmd);
383 if (ret == 0) {
384 ret = lbs_assoc_post(priv,
385 (struct cmd_ds_802_11_associate_response *) &cmd);
386 }
387
388 done:
389 lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
390 return ret;
391 }
392
393 /**
394 * @brief Associate to a specific BSS discovered in a scan
395 *
396 * @param priv A pointer to struct lbs_private structure
397 * @param assoc_req The association request describing the BSS to associate with
398 *
399 * @return 0-success, otherwise fail
400 */
401 static int lbs_try_associate(struct lbs_private *priv,
402 struct assoc_request *assoc_req)
403 {
404 int ret;
405 u8 preamble = RADIO_PREAMBLE_LONG;
406
407 lbs_deb_enter(LBS_DEB_ASSOC);
408
409 /* FW v9 and higher indicate authentication suites as a TLV in the
410 * association command, not as a separate authentication command.
411 */
412 if (priv->fwrelease < 0x09000000) {
413 ret = lbs_set_authentication(priv, assoc_req->bss.bssid,
414 priv->secinfo.auth_mode);
415 if (ret)
416 goto out;
417 }
418
419 /* Use short preamble only when both the BSS and firmware support it */
420 if ((priv->capability & WLAN_CAPABILITY_SHORT_PREAMBLE) &&
421 (assoc_req->bss.capability & WLAN_CAPABILITY_SHORT_PREAMBLE))
422 preamble = RADIO_PREAMBLE_SHORT;
423
424 ret = lbs_set_radio(priv, preamble, 1);
425 if (ret)
426 goto out;
427
428 ret = lbs_associate(priv, assoc_req, CMD_802_11_ASSOCIATE);
429
430 out:
431 lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
432 return ret;
433 }
434
435 static int lbs_adhoc_post(struct lbs_private *priv,
436 struct cmd_ds_802_11_ad_hoc_result *resp)
437 {
438 int ret = 0;
439 u16 command = le16_to_cpu(resp->hdr.command);
440 u16 result = le16_to_cpu(resp->hdr.result);
441 union iwreq_data wrqu;
442 struct bss_descriptor *bss;
443 DECLARE_SSID_BUF(ssid);
444
445 lbs_deb_enter(LBS_DEB_JOIN);
446
447 if (!priv->in_progress_assoc_req) {
448 lbs_deb_join("ADHOC_RESP: no in-progress association "
449 "request\n");
450 ret = -1;
451 goto done;
452 }
453 bss = &priv->in_progress_assoc_req->bss;
454
455 /*
456 * Join result code 0 --> SUCCESS
457 */
458 if (result) {
459 lbs_deb_join("ADHOC_RESP: failed (result 0x%X)\n", result);
460 if (priv->connect_status == LBS_CONNECTED)
461 lbs_mac_event_disconnected(priv);
462 ret = -1;
463 goto done;
464 }
465
466 /* Send a Media Connected event, according to the Spec */
467 priv->connect_status = LBS_CONNECTED;
468
469 if (command == CMD_RET(CMD_802_11_AD_HOC_START)) {
470 /* Update the created network descriptor with the new BSSID */
471 memcpy(bss->bssid, resp->bssid, ETH_ALEN);
472 }
473
474 /* Set the BSSID from the joined/started descriptor */
475 memcpy(&priv->curbssparams.bssid, bss->bssid, ETH_ALEN);
476
477 /* Set the new SSID to current SSID */
478 memcpy(&priv->curbssparams.ssid, &bss->ssid, IW_ESSID_MAX_SIZE);
479 priv->curbssparams.ssid_len = bss->ssid_len;
480
481 netif_carrier_on(priv->dev);
482 if (!priv->tx_pending_len)
483 netif_wake_queue(priv->dev);
484
485 memset(&wrqu, 0, sizeof(wrqu));
486 memcpy(wrqu.ap_addr.sa_data, priv->curbssparams.bssid, ETH_ALEN);
487 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
488 wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
489
490 lbs_deb_join("ADHOC_RESP: Joined/started '%s', BSSID %pM, channel %d\n",
491 print_ssid(ssid, bss->ssid, bss->ssid_len),
492 priv->curbssparams.bssid,
493 priv->curbssparams.channel);
494
495 done:
496 lbs_deb_leave_args(LBS_DEB_JOIN, "ret %d", ret);
497 return ret;
498 }
499
500 /**
501 * @brief Join an adhoc network found in a previous scan
502 *
503 * @param priv A pointer to struct lbs_private structure
504 * @param assoc_req The association request describing the BSS to join
505 *
506 * @return 0 on success, error on failure
507 */
508 static int lbs_adhoc_join(struct lbs_private *priv,
509 struct assoc_request *assoc_req)
510 {
511 struct cmd_ds_802_11_ad_hoc_join cmd;
512 struct bss_descriptor *bss = &assoc_req->bss;
513 u8 preamble = RADIO_PREAMBLE_LONG;
514 DECLARE_SSID_BUF(ssid);
515 u16 ratesize = 0;
516 int ret = 0;
517
518 lbs_deb_enter(LBS_DEB_ASSOC);
519
520 lbs_deb_join("current SSID '%s', ssid length %u\n",
521 print_ssid(ssid, priv->curbssparams.ssid,
522 priv->curbssparams.ssid_len),
523 priv->curbssparams.ssid_len);
524 lbs_deb_join("requested ssid '%s', ssid length %u\n",
525 print_ssid(ssid, bss->ssid, bss->ssid_len),
526 bss->ssid_len);
527
528 /* check if the requested SSID is already joined */
529 if (priv->curbssparams.ssid_len &&
530 !lbs_ssid_cmp(priv->curbssparams.ssid,
531 priv->curbssparams.ssid_len,
532 bss->ssid, bss->ssid_len) &&
533 (priv->mode == IW_MODE_ADHOC) &&
534 (priv->connect_status == LBS_CONNECTED)) {
535 union iwreq_data wrqu;
536
537 lbs_deb_join("ADHOC_J_CMD: New ad-hoc SSID is the same as "
538 "current, not attempting to re-join");
539
540 /* Send the re-association event though, because the association
541 * request really was successful, even if just a null-op.
542 */
543 memset(&wrqu, 0, sizeof(wrqu));
544 memcpy(wrqu.ap_addr.sa_data, priv->curbssparams.bssid,
545 ETH_ALEN);
546 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
547 wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
548 goto out;
549 }
550
551 /* Use short preamble only when both the BSS and firmware support it */
552 if ((priv->capability & WLAN_CAPABILITY_SHORT_PREAMBLE) &&
553 (bss->capability & WLAN_CAPABILITY_SHORT_PREAMBLE)) {
554 lbs_deb_join("AdhocJoin: Short preamble\n");
555 preamble = RADIO_PREAMBLE_SHORT;
556 }
557
558 ret = lbs_set_radio(priv, preamble, 1);
559 if (ret)
560 goto out;
561
562 lbs_deb_join("AdhocJoin: channel = %d\n", assoc_req->channel);
563 lbs_deb_join("AdhocJoin: band = %c\n", assoc_req->band);
564
565 priv->adhoccreate = 0;
566 priv->curbssparams.channel = bss->channel;
567
568 /* Build the join command */
569 memset(&cmd, 0, sizeof(cmd));
570 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
571
572 cmd.bss.type = CMD_BSS_TYPE_IBSS;
573 cmd.bss.beaconperiod = cpu_to_le16(bss->beaconperiod);
574
575 memcpy(&cmd.bss.bssid, &bss->bssid, ETH_ALEN);
576 memcpy(&cmd.bss.ssid, &bss->ssid, bss->ssid_len);
577
578 memcpy(&cmd.bss.ds, &bss->phy.ds, sizeof(struct ieee_ie_ds_param_set));
579
580 memcpy(&cmd.bss.ibss, &bss->ss.ibss,
581 sizeof(struct ieee_ie_ibss_param_set));
582
583 cmd.bss.capability = cpu_to_le16(bss->capability & CAPINFO_MASK);
584 lbs_deb_join("ADHOC_J_CMD: tmpcap=%4X CAPINFO_MASK=%4X\n",
585 bss->capability, CAPINFO_MASK);
586
587 /* information on BSSID descriptor passed to FW */
588 lbs_deb_join("ADHOC_J_CMD: BSSID = %pM, SSID = '%s'\n",
589 cmd.bss.bssid, cmd.bss.ssid);
590
591 /* Only v8 and below support setting these */
592 if (priv->fwrelease < 0x09000000) {
593 /* failtimeout */
594 cmd.failtimeout = cpu_to_le16(MRVDRV_ASSOCIATION_TIME_OUT);
595 /* probedelay */
596 cmd.probedelay = cpu_to_le16(CMD_SCAN_PROBE_DELAY_TIME);
597 }
598
599 /* Copy Data rates from the rates recorded in scan response */
600 memset(cmd.bss.rates, 0, sizeof(cmd.bss.rates));
601 ratesize = min_t(u16, sizeof(cmd.bss.rates), MAX_RATES);
602 memcpy(cmd.bss.rates, bss->rates, ratesize);
603 if (get_common_rates(priv, cmd.bss.rates, &ratesize)) {
604 lbs_deb_join("ADHOC_JOIN: get_common_rates returned error.\n");
605 ret = -1;
606 goto out;
607 }
608
609 /* Copy the ad-hoc creation rates into Current BSS state structure */
610 memset(&priv->curbssparams.rates, 0, sizeof(priv->curbssparams.rates));
611 memcpy(&priv->curbssparams.rates, cmd.bss.rates, ratesize);
612
613 /* Set MSB on basic rates as the firmware requires, but _after_
614 * copying to current bss rates.
615 */
616 lbs_set_basic_rate_flags(cmd.bss.rates, ratesize);
617
618 cmd.bss.ibss.atimwindow = bss->atimwindow;
619
620 if (assoc_req->secinfo.wep_enabled) {
621 u16 tmp = le16_to_cpu(cmd.bss.capability);
622 tmp |= WLAN_CAPABILITY_PRIVACY;
623 cmd.bss.capability = cpu_to_le16(tmp);
624 }
625
626 if (priv->psmode == LBS802_11POWERMODEMAX_PSP) {
627 __le32 local_ps_mode = cpu_to_le32(LBS802_11POWERMODECAM);
628
629 /* wake up first */
630 ret = lbs_prepare_and_send_command(priv, CMD_802_11_PS_MODE,
631 CMD_ACT_SET, 0, 0,
632 &local_ps_mode);
633 if (ret) {
634 ret = -1;
635 goto out;
636 }
637 }
638
639 if (lbs_parse_dnld_countryinfo_11d(priv, bss)) {
640 ret = -1;
641 goto out;
642 }
643
644 ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_JOIN, &cmd);
645 if (ret == 0) {
646 ret = lbs_adhoc_post(priv,
647 (struct cmd_ds_802_11_ad_hoc_result *)&cmd);
648 }
649
650 out:
651 lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
652 return ret;
653 }
654
655 /**
656 * @brief Start an Adhoc Network
657 *
658 * @param priv A pointer to struct lbs_private structure
659 * @param assoc_req The association request describing the BSS to start
660 *
661 * @return 0 on success, error on failure
662 */
663 static int lbs_adhoc_start(struct lbs_private *priv,
664 struct assoc_request *assoc_req)
665 {
666 struct cmd_ds_802_11_ad_hoc_start cmd;
667 u8 preamble = RADIO_PREAMBLE_LONG;
668 size_t ratesize = 0;
669 u16 tmpcap = 0;
670 int ret = 0;
671 DECLARE_SSID_BUF(ssid);
672
673 lbs_deb_enter(LBS_DEB_ASSOC);
674
675 if (priv->capability & WLAN_CAPABILITY_SHORT_PREAMBLE) {
676 lbs_deb_join("ADHOC_START: Will use short preamble\n");
677 preamble = RADIO_PREAMBLE_SHORT;
678 }
679
680 ret = lbs_set_radio(priv, preamble, 1);
681 if (ret)
682 goto out;
683
684 /* Build the start command */
685 memset(&cmd, 0, sizeof(cmd));
686 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
687
688 memcpy(cmd.ssid, assoc_req->ssid, assoc_req->ssid_len);
689
690 lbs_deb_join("ADHOC_START: SSID '%s', ssid length %u\n",
691 print_ssid(ssid, assoc_req->ssid, assoc_req->ssid_len),
692 assoc_req->ssid_len);
693
694 cmd.bsstype = CMD_BSS_TYPE_IBSS;
695
696 if (priv->beacon_period == 0)
697 priv->beacon_period = MRVDRV_BEACON_INTERVAL;
698 cmd.beaconperiod = cpu_to_le16(priv->beacon_period);
699
700 WARN_ON(!assoc_req->channel);
701
702 /* set Physical parameter set */
703 cmd.ds.header.id = WLAN_EID_DS_PARAMS;
704 cmd.ds.header.len = 1;
705 cmd.ds.channel = assoc_req->channel;
706
707 /* set IBSS parameter set */
708 cmd.ibss.header.id = WLAN_EID_IBSS_PARAMS;
709 cmd.ibss.header.len = 2;
710 cmd.ibss.atimwindow = cpu_to_le16(0);
711
712 /* set capability info */
713 tmpcap = WLAN_CAPABILITY_IBSS;
714 if (assoc_req->secinfo.wep_enabled ||
715 assoc_req->secinfo.WPAenabled ||
716 assoc_req->secinfo.WPA2enabled) {
717 lbs_deb_join("ADHOC_START: WEP/WPA enabled, privacy on\n");
718 tmpcap |= WLAN_CAPABILITY_PRIVACY;
719 } else
720 lbs_deb_join("ADHOC_START: WEP disabled, privacy off\n");
721
722 cmd.capability = cpu_to_le16(tmpcap);
723
724 /* Only v8 and below support setting probe delay */
725 if (priv->fwrelease < 0x09000000)
726 cmd.probedelay = cpu_to_le16(CMD_SCAN_PROBE_DELAY_TIME);
727
728 ratesize = min(sizeof(cmd.rates), sizeof(lbs_bg_rates));
729 memcpy(cmd.rates, lbs_bg_rates, ratesize);
730
731 /* Copy the ad-hoc creating rates into Current BSS state structure */
732 memset(&priv->curbssparams.rates, 0, sizeof(priv->curbssparams.rates));
733 memcpy(&priv->curbssparams.rates, &cmd.rates, ratesize);
734
735 /* Set MSB on basic rates as the firmware requires, but _after_
736 * copying to current bss rates.
737 */
738 lbs_set_basic_rate_flags(cmd.rates, ratesize);
739
740 lbs_deb_join("ADHOC_START: rates=%02x %02x %02x %02x\n",
741 cmd.rates[0], cmd.rates[1], cmd.rates[2], cmd.rates[3]);
742
743 if (lbs_create_dnld_countryinfo_11d(priv)) {
744 lbs_deb_join("ADHOC_START: dnld_countryinfo_11d failed\n");
745 ret = -1;
746 goto out;
747 }
748
749 lbs_deb_join("ADHOC_START: Starting Ad-Hoc BSS on channel %d, band %d\n",
750 assoc_req->channel, assoc_req->band);
751
752 priv->adhoccreate = 1;
753 priv->mode = IW_MODE_ADHOC;
754
755 ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_START, &cmd);
756 if (ret == 0)
757 ret = lbs_adhoc_post(priv,
758 (struct cmd_ds_802_11_ad_hoc_result *)&cmd);
759
760 out:
761 lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
762 return ret;
763 }
764
765 /**
766 * @brief Stop and Ad-Hoc network and exit Ad-Hoc mode
767 *
768 * @param priv A pointer to struct lbs_private structure
769 * @return 0 on success, or an error
770 */
771 int lbs_adhoc_stop(struct lbs_private *priv)
772 {
773 struct cmd_ds_802_11_ad_hoc_stop cmd;
774 int ret;
775
776 lbs_deb_enter(LBS_DEB_JOIN);
777
778 memset(&cmd, 0, sizeof (cmd));
779 cmd.hdr.size = cpu_to_le16 (sizeof (cmd));
780
781 ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_STOP, &cmd);
782
783 /* Clean up everything even if there was an error */
784 lbs_mac_event_disconnected(priv);
785
786 lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
787 return ret;
788 }
789
790 static inline int match_bss_no_security(struct lbs_802_11_security *secinfo,
791 struct bss_descriptor *match_bss)
792 {
793 if (!secinfo->wep_enabled && !secinfo->WPAenabled
794 && !secinfo->WPA2enabled
795 && match_bss->wpa_ie[0] != WLAN_EID_GENERIC
796 && match_bss->rsn_ie[0] != WLAN_EID_RSN
797 && !(match_bss->capability & WLAN_CAPABILITY_PRIVACY))
798 return 1;
799 else
800 return 0;
801 }
802
803 static inline int match_bss_static_wep(struct lbs_802_11_security *secinfo,
804 struct bss_descriptor *match_bss)
805 {
806 if (secinfo->wep_enabled && !secinfo->WPAenabled
807 && !secinfo->WPA2enabled
808 && (match_bss->capability & WLAN_CAPABILITY_PRIVACY))
809 return 1;
810 else
811 return 0;
812 }
813
814 static inline int match_bss_wpa(struct lbs_802_11_security *secinfo,
815 struct bss_descriptor *match_bss)
816 {
817 if (!secinfo->wep_enabled && secinfo->WPAenabled
818 && (match_bss->wpa_ie[0] == WLAN_EID_GENERIC)
819 /* privacy bit may NOT be set in some APs like LinkSys WRT54G
820 && (match_bss->capability & WLAN_CAPABILITY_PRIVACY) */
821 )
822 return 1;
823 else
824 return 0;
825 }
826
827 static inline int match_bss_wpa2(struct lbs_802_11_security *secinfo,
828 struct bss_descriptor *match_bss)
829 {
830 if (!secinfo->wep_enabled && secinfo->WPA2enabled &&
831 (match_bss->rsn_ie[0] == WLAN_EID_RSN)
832 /* privacy bit may NOT be set in some APs like LinkSys WRT54G
833 (match_bss->capability & WLAN_CAPABILITY_PRIVACY) */
834 )
835 return 1;
836 else
837 return 0;
838 }
839
840 static inline int match_bss_dynamic_wep(struct lbs_802_11_security *secinfo,
841 struct bss_descriptor *match_bss)
842 {
843 if (!secinfo->wep_enabled && !secinfo->WPAenabled
844 && !secinfo->WPA2enabled
845 && (match_bss->wpa_ie[0] != WLAN_EID_GENERIC)
846 && (match_bss->rsn_ie[0] != WLAN_EID_RSN)
847 && (match_bss->capability & WLAN_CAPABILITY_PRIVACY))
848 return 1;
849 else
850 return 0;
851 }
852
853 /**
854 * @brief Check if a scanned network compatible with the driver settings
855 *
856 * WEP WPA WPA2 ad-hoc encrypt Network
857 * enabled enabled enabled AES mode privacy WPA WPA2 Compatible
858 * 0 0 0 0 NONE 0 0 0 yes No security
859 * 1 0 0 0 NONE 1 0 0 yes Static WEP
860 * 0 1 0 0 x 1x 1 x yes WPA
861 * 0 0 1 0 x 1x x 1 yes WPA2
862 * 0 0 0 1 NONE 1 0 0 yes Ad-hoc AES
863 * 0 0 0 0 !=NONE 1 0 0 yes Dynamic WEP
864 *
865 *
866 * @param priv A pointer to struct lbs_private
867 * @param index Index in scantable to check against current driver settings
868 * @param mode Network mode: Infrastructure or IBSS
869 *
870 * @return Index in scantable, or error code if negative
871 */
872 static int is_network_compatible(struct lbs_private *priv,
873 struct bss_descriptor *bss, uint8_t mode)
874 {
875 int matched = 0;
876
877 lbs_deb_enter(LBS_DEB_SCAN);
878
879 if (bss->mode != mode)
880 goto done;
881
882 matched = match_bss_no_security(&priv->secinfo, bss);
883 if (matched)
884 goto done;
885 matched = match_bss_static_wep(&priv->secinfo, bss);
886 if (matched)
887 goto done;
888 matched = match_bss_wpa(&priv->secinfo, bss);
889 if (matched) {
890 lbs_deb_scan("is_network_compatible() WPA: wpa_ie 0x%x "
891 "wpa2_ie 0x%x WEP %s WPA %s WPA2 %s "
892 "privacy 0x%x\n", bss->wpa_ie[0], bss->rsn_ie[0],
893 priv->secinfo.wep_enabled ? "e" : "d",
894 priv->secinfo.WPAenabled ? "e" : "d",
895 priv->secinfo.WPA2enabled ? "e" : "d",
896 (bss->capability & WLAN_CAPABILITY_PRIVACY));
897 goto done;
898 }
899 matched = match_bss_wpa2(&priv->secinfo, bss);
900 if (matched) {
901 lbs_deb_scan("is_network_compatible() WPA2: wpa_ie 0x%x "
902 "wpa2_ie 0x%x WEP %s WPA %s WPA2 %s "
903 "privacy 0x%x\n", bss->wpa_ie[0], bss->rsn_ie[0],
904 priv->secinfo.wep_enabled ? "e" : "d",
905 priv->secinfo.WPAenabled ? "e" : "d",
906 priv->secinfo.WPA2enabled ? "e" : "d",
907 (bss->capability & WLAN_CAPABILITY_PRIVACY));
908 goto done;
909 }
910 matched = match_bss_dynamic_wep(&priv->secinfo, bss);
911 if (matched) {
912 lbs_deb_scan("is_network_compatible() dynamic WEP: "
913 "wpa_ie 0x%x wpa2_ie 0x%x privacy 0x%x\n",
914 bss->wpa_ie[0], bss->rsn_ie[0],
915 (bss->capability & WLAN_CAPABILITY_PRIVACY));
916 goto done;
917 }
918
919 /* bss security settings don't match those configured on card */
920 lbs_deb_scan("is_network_compatible() FAILED: wpa_ie 0x%x "
921 "wpa2_ie 0x%x WEP %s WPA %s WPA2 %s privacy 0x%x\n",
922 bss->wpa_ie[0], bss->rsn_ie[0],
923 priv->secinfo.wep_enabled ? "e" : "d",
924 priv->secinfo.WPAenabled ? "e" : "d",
925 priv->secinfo.WPA2enabled ? "e" : "d",
926 (bss->capability & WLAN_CAPABILITY_PRIVACY));
927
928 done:
929 lbs_deb_leave_args(LBS_DEB_SCAN, "matched: %d", matched);
930 return matched;
931 }
932
933 /**
934 * @brief This function finds a specific compatible BSSID in the scan list
935 *
936 * Used in association code
937 *
938 * @param priv A pointer to struct lbs_private
939 * @param bssid BSSID to find in the scan list
940 * @param mode Network mode: Infrastructure or IBSS
941 *
942 * @return index in BSSID list, or error return code (< 0)
943 */
944 static struct bss_descriptor *lbs_find_bssid_in_list(struct lbs_private *priv,
945 uint8_t *bssid, uint8_t mode)
946 {
947 struct bss_descriptor *iter_bss;
948 struct bss_descriptor *found_bss = NULL;
949
950 lbs_deb_enter(LBS_DEB_SCAN);
951
952 if (!bssid)
953 goto out;
954
955 lbs_deb_hex(LBS_DEB_SCAN, "looking for", bssid, ETH_ALEN);
956
957 /* Look through the scan table for a compatible match. The loop will
958 * continue past a matched bssid that is not compatible in case there
959 * is an AP with multiple SSIDs assigned to the same BSSID
960 */
961 mutex_lock(&priv->lock);
962 list_for_each_entry(iter_bss, &priv->network_list, list) {
963 if (compare_ether_addr(iter_bss->bssid, bssid))
964 continue; /* bssid doesn't match */
965 switch (mode) {
966 case IW_MODE_INFRA:
967 case IW_MODE_ADHOC:
968 if (!is_network_compatible(priv, iter_bss, mode))
969 break;
970 found_bss = iter_bss;
971 break;
972 default:
973 found_bss = iter_bss;
974 break;
975 }
976 }
977 mutex_unlock(&priv->lock);
978
979 out:
980 lbs_deb_leave_args(LBS_DEB_SCAN, "found_bss %p", found_bss);
981 return found_bss;
982 }
983
984 /**
985 * @brief This function finds ssid in ssid list.
986 *
987 * Used in association code
988 *
989 * @param priv A pointer to struct lbs_private
990 * @param ssid SSID to find in the list
991 * @param bssid BSSID to qualify the SSID selection (if provided)
992 * @param mode Network mode: Infrastructure or IBSS
993 *
994 * @return index in BSSID list
995 */
996 static struct bss_descriptor *lbs_find_ssid_in_list(struct lbs_private *priv,
997 uint8_t *ssid, uint8_t ssid_len,
998 uint8_t *bssid, uint8_t mode,
999 int channel)
1000 {
1001 u32 bestrssi = 0;
1002 struct bss_descriptor *iter_bss = NULL;
1003 struct bss_descriptor *found_bss = NULL;
1004 struct bss_descriptor *tmp_oldest = NULL;
1005
1006 lbs_deb_enter(LBS_DEB_SCAN);
1007
1008 mutex_lock(&priv->lock);
1009
1010 list_for_each_entry(iter_bss, &priv->network_list, list) {
1011 if (!tmp_oldest ||
1012 (iter_bss->last_scanned < tmp_oldest->last_scanned))
1013 tmp_oldest = iter_bss;
1014
1015 if (lbs_ssid_cmp(iter_bss->ssid, iter_bss->ssid_len,
1016 ssid, ssid_len) != 0)
1017 continue; /* ssid doesn't match */
1018 if (bssid && compare_ether_addr(iter_bss->bssid, bssid) != 0)
1019 continue; /* bssid doesn't match */
1020 if ((channel > 0) && (iter_bss->channel != channel))
1021 continue; /* channel doesn't match */
1022
1023 switch (mode) {
1024 case IW_MODE_INFRA:
1025 case IW_MODE_ADHOC:
1026 if (!is_network_compatible(priv, iter_bss, mode))
1027 break;
1028
1029 if (bssid) {
1030 /* Found requested BSSID */
1031 found_bss = iter_bss;
1032 goto out;
1033 }
1034
1035 if (SCAN_RSSI(iter_bss->rssi) > bestrssi) {
1036 bestrssi = SCAN_RSSI(iter_bss->rssi);
1037 found_bss = iter_bss;
1038 }
1039 break;
1040 case IW_MODE_AUTO:
1041 default:
1042 if (SCAN_RSSI(iter_bss->rssi) > bestrssi) {
1043 bestrssi = SCAN_RSSI(iter_bss->rssi);
1044 found_bss = iter_bss;
1045 }
1046 break;
1047 }
1048 }
1049
1050 out:
1051 mutex_unlock(&priv->lock);
1052 lbs_deb_leave_args(LBS_DEB_SCAN, "found_bss %p", found_bss);
1053 return found_bss;
1054 }
1055
1056 static int assoc_helper_essid(struct lbs_private *priv,
1057 struct assoc_request * assoc_req)
1058 {
1059 int ret = 0;
1060 struct bss_descriptor * bss;
1061 int channel = -1;
1062 DECLARE_SSID_BUF(ssid);
1063
1064 lbs_deb_enter(LBS_DEB_ASSOC);
1065
1066 /* FIXME: take channel into account when picking SSIDs if a channel
1067 * is set.
1068 */
1069
1070 if (test_bit(ASSOC_FLAG_CHANNEL, &assoc_req->flags))
1071 channel = assoc_req->channel;
1072
1073 lbs_deb_assoc("SSID '%s' requested\n",
1074 print_ssid(ssid, assoc_req->ssid, assoc_req->ssid_len));
1075 if (assoc_req->mode == IW_MODE_INFRA) {
1076 lbs_send_specific_ssid_scan(priv, assoc_req->ssid,
1077 assoc_req->ssid_len);
1078
1079 bss = lbs_find_ssid_in_list(priv, assoc_req->ssid,
1080 assoc_req->ssid_len, NULL, IW_MODE_INFRA, channel);
1081 if (bss != NULL) {
1082 memcpy(&assoc_req->bss, bss, sizeof(struct bss_descriptor));
1083 ret = lbs_try_associate(priv, assoc_req);
1084 } else {
1085 lbs_deb_assoc("SSID not found; cannot associate\n");
1086 }
1087 } else if (assoc_req->mode == IW_MODE_ADHOC) {
1088 /* Scan for the network, do not save previous results. Stale
1089 * scan data will cause us to join a non-existant adhoc network
1090 */
1091 lbs_send_specific_ssid_scan(priv, assoc_req->ssid,
1092 assoc_req->ssid_len);
1093
1094 /* Search for the requested SSID in the scan table */
1095 bss = lbs_find_ssid_in_list(priv, assoc_req->ssid,
1096 assoc_req->ssid_len, NULL, IW_MODE_ADHOC, channel);
1097 if (bss != NULL) {
1098 lbs_deb_assoc("SSID found, will join\n");
1099 memcpy(&assoc_req->bss, bss, sizeof(struct bss_descriptor));
1100 lbs_adhoc_join(priv, assoc_req);
1101 } else {
1102 /* else send START command */
1103 lbs_deb_assoc("SSID not found, creating adhoc network\n");
1104 memcpy(&assoc_req->bss.ssid, &assoc_req->ssid,
1105 IW_ESSID_MAX_SIZE);
1106 assoc_req->bss.ssid_len = assoc_req->ssid_len;
1107 lbs_adhoc_start(priv, assoc_req);
1108 }
1109 }
1110
1111 lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
1112 return ret;
1113 }
1114
1115
1116 static int assoc_helper_bssid(struct lbs_private *priv,
1117 struct assoc_request * assoc_req)
1118 {
1119 int ret = 0;
1120 struct bss_descriptor * bss;
1121
1122 lbs_deb_enter_args(LBS_DEB_ASSOC, "BSSID %pM", assoc_req->bssid);
1123
1124 /* Search for index position in list for requested MAC */
1125 bss = lbs_find_bssid_in_list(priv, assoc_req->bssid,
1126 assoc_req->mode);
1127 if (bss == NULL) {
1128 lbs_deb_assoc("ASSOC: WAP: BSSID %pM not found, "
1129 "cannot associate.\n", assoc_req->bssid);
1130 goto out;
1131 }
1132
1133 memcpy(&assoc_req->bss, bss, sizeof(struct bss_descriptor));
1134 if (assoc_req->mode == IW_MODE_INFRA) {
1135 ret = lbs_try_associate(priv, assoc_req);
1136 lbs_deb_assoc("ASSOC: lbs_try_associate(bssid) returned %d\n",
1137 ret);
1138 } else if (assoc_req->mode == IW_MODE_ADHOC) {
1139 lbs_adhoc_join(priv, assoc_req);
1140 }
1141
1142 out:
1143 lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
1144 return ret;
1145 }
1146
1147
1148 static int assoc_helper_associate(struct lbs_private *priv,
1149 struct assoc_request * assoc_req)
1150 {
1151 int ret = 0, done = 0;
1152
1153 lbs_deb_enter(LBS_DEB_ASSOC);
1154
1155 /* If we're given and 'any' BSSID, try associating based on SSID */
1156
1157 if (test_bit(ASSOC_FLAG_BSSID, &assoc_req->flags)) {
1158 if (compare_ether_addr(bssid_any, assoc_req->bssid)
1159 && compare_ether_addr(bssid_off, assoc_req->bssid)) {
1160 ret = assoc_helper_bssid(priv, assoc_req);
1161 done = 1;
1162 }
1163 }
1164
1165 if (!done && test_bit(ASSOC_FLAG_SSID, &assoc_req->flags)) {
1166 ret = assoc_helper_essid(priv, assoc_req);
1167 }
1168
1169 lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
1170 return ret;
1171 }
1172
1173
1174 static int assoc_helper_mode(struct lbs_private *priv,
1175 struct assoc_request * assoc_req)
1176 {
1177 int ret = 0;
1178
1179 lbs_deb_enter(LBS_DEB_ASSOC);
1180
1181 if (assoc_req->mode == priv->mode)
1182 goto done;
1183
1184 if (assoc_req->mode == IW_MODE_INFRA) {
1185 if (priv->psstate != PS_STATE_FULL_POWER)
1186 lbs_ps_wakeup(priv, CMD_OPTION_WAITFORRSP);
1187 priv->psmode = LBS802_11POWERMODECAM;
1188 }
1189
1190 priv->mode = assoc_req->mode;
1191 ret = lbs_set_snmp_mib(priv, SNMP_MIB_OID_BSS_TYPE, assoc_req->mode);
1192
1193 done:
1194 lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
1195 return ret;
1196 }
1197
1198 static int assoc_helper_channel(struct lbs_private *priv,
1199 struct assoc_request * assoc_req)
1200 {
1201 int ret = 0;
1202
1203 lbs_deb_enter(LBS_DEB_ASSOC);
1204
1205 ret = lbs_update_channel(priv);
1206 if (ret) {
1207 lbs_deb_assoc("ASSOC: channel: error getting channel.\n");
1208 goto done;
1209 }
1210
1211 if (assoc_req->channel == priv->curbssparams.channel)
1212 goto done;
1213
1214 if (priv->mesh_dev) {
1215 /* Change mesh channel first; 21.p21 firmware won't let
1216 you change channel otherwise (even though it'll return
1217 an error to this */
1218 lbs_mesh_config(priv, CMD_ACT_MESH_CONFIG_STOP,
1219 assoc_req->channel);
1220 }
1221
1222 lbs_deb_assoc("ASSOC: channel: %d -> %d\n",
1223 priv->curbssparams.channel, assoc_req->channel);
1224
1225 ret = lbs_set_channel(priv, assoc_req->channel);
1226 if (ret < 0)
1227 lbs_deb_assoc("ASSOC: channel: error setting channel.\n");
1228
1229 /* FIXME: shouldn't need to grab the channel _again_ after setting
1230 * it since the firmware is supposed to return the new channel, but
1231 * whatever... */
1232 ret = lbs_update_channel(priv);
1233 if (ret) {
1234 lbs_deb_assoc("ASSOC: channel: error getting channel.\n");
1235 goto done;
1236 }
1237
1238 if (assoc_req->channel != priv->curbssparams.channel) {
1239 lbs_deb_assoc("ASSOC: channel: failed to update channel to %d\n",
1240 assoc_req->channel);
1241 goto restore_mesh;
1242 }
1243
1244 if ( assoc_req->secinfo.wep_enabled
1245 && (assoc_req->wep_keys[0].len
1246 || assoc_req->wep_keys[1].len
1247 || assoc_req->wep_keys[2].len
1248 || assoc_req->wep_keys[3].len)) {
1249 /* Make sure WEP keys are re-sent to firmware */
1250 set_bit(ASSOC_FLAG_WEP_KEYS, &assoc_req->flags);
1251 }
1252
1253 /* Must restart/rejoin adhoc networks after channel change */
1254 set_bit(ASSOC_FLAG_SSID, &assoc_req->flags);
1255
1256 restore_mesh:
1257 if (priv->mesh_dev)
1258 lbs_mesh_config(priv, CMD_ACT_MESH_CONFIG_START,
1259 priv->curbssparams.channel);
1260
1261 done:
1262 lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
1263 return ret;
1264 }
1265
1266
1267 static int assoc_helper_wep_keys(struct lbs_private *priv,
1268 struct assoc_request *assoc_req)
1269 {
1270 int i;
1271 int ret = 0;
1272
1273 lbs_deb_enter(LBS_DEB_ASSOC);
1274
1275 /* Set or remove WEP keys */
1276 if (assoc_req->wep_keys[0].len || assoc_req->wep_keys[1].len ||
1277 assoc_req->wep_keys[2].len || assoc_req->wep_keys[3].len)
1278 ret = lbs_cmd_802_11_set_wep(priv, CMD_ACT_ADD, assoc_req);
1279 else
1280 ret = lbs_cmd_802_11_set_wep(priv, CMD_ACT_REMOVE, assoc_req);
1281
1282 if (ret)
1283 goto out;
1284
1285 /* enable/disable the MAC's WEP packet filter */
1286 if (assoc_req->secinfo.wep_enabled)
1287 priv->mac_control |= CMD_ACT_MAC_WEP_ENABLE;
1288 else
1289 priv->mac_control &= ~CMD_ACT_MAC_WEP_ENABLE;
1290
1291 lbs_set_mac_control(priv);
1292
1293 mutex_lock(&priv->lock);
1294
1295 /* Copy WEP keys into priv wep key fields */
1296 for (i = 0; i < 4; i++) {
1297 memcpy(&priv->wep_keys[i], &assoc_req->wep_keys[i],
1298 sizeof(struct enc_key));
1299 }
1300 priv->wep_tx_keyidx = assoc_req->wep_tx_keyidx;
1301
1302 mutex_unlock(&priv->lock);
1303
1304 out:
1305 lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
1306 return ret;
1307 }
1308
1309 static int assoc_helper_secinfo(struct lbs_private *priv,
1310 struct assoc_request * assoc_req)
1311 {
1312 int ret = 0;
1313 uint16_t do_wpa;
1314 uint16_t rsn = 0;
1315
1316 lbs_deb_enter(LBS_DEB_ASSOC);
1317
1318 memcpy(&priv->secinfo, &assoc_req->secinfo,
1319 sizeof(struct lbs_802_11_security));
1320
1321 lbs_set_mac_control(priv);
1322
1323 /* If RSN is already enabled, don't try to enable it again, since
1324 * ENABLE_RSN resets internal state machines and will clobber the
1325 * 4-way WPA handshake.
1326 */
1327
1328 /* Get RSN enabled/disabled */
1329 ret = lbs_cmd_802_11_enable_rsn(priv, CMD_ACT_GET, &rsn);
1330 if (ret) {
1331 lbs_deb_assoc("Failed to get RSN status: %d\n", ret);
1332 goto out;
1333 }
1334
1335 /* Don't re-enable RSN if it's already enabled */
1336 do_wpa = assoc_req->secinfo.WPAenabled || assoc_req->secinfo.WPA2enabled;
1337 if (do_wpa == rsn)
1338 goto out;
1339
1340 /* Set RSN enabled/disabled */
1341 ret = lbs_cmd_802_11_enable_rsn(priv, CMD_ACT_SET, &do_wpa);
1342
1343 out:
1344 lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
1345 return ret;
1346 }
1347
1348
1349 static int assoc_helper_wpa_keys(struct lbs_private *priv,
1350 struct assoc_request * assoc_req)
1351 {
1352 int ret = 0;
1353 unsigned int flags = assoc_req->flags;
1354
1355 lbs_deb_enter(LBS_DEB_ASSOC);
1356
1357 /* Work around older firmware bug where WPA unicast and multicast
1358 * keys must be set independently. Seen in SDIO parts with firmware
1359 * version 5.0.11p0.
1360 */
1361
1362 if (test_bit(ASSOC_FLAG_WPA_UCAST_KEY, &assoc_req->flags)) {
1363 clear_bit(ASSOC_FLAG_WPA_MCAST_KEY, &assoc_req->flags);
1364 ret = lbs_cmd_802_11_key_material(priv, CMD_ACT_SET, assoc_req);
1365 assoc_req->flags = flags;
1366 }
1367
1368 if (ret)
1369 goto out;
1370
1371 if (test_bit(ASSOC_FLAG_WPA_MCAST_KEY, &assoc_req->flags)) {
1372 clear_bit(ASSOC_FLAG_WPA_UCAST_KEY, &assoc_req->flags);
1373
1374 ret = lbs_cmd_802_11_key_material(priv, CMD_ACT_SET, assoc_req);
1375 assoc_req->flags = flags;
1376 }
1377
1378 out:
1379 lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
1380 return ret;
1381 }
1382
1383
1384 static int assoc_helper_wpa_ie(struct lbs_private *priv,
1385 struct assoc_request * assoc_req)
1386 {
1387 int ret = 0;
1388
1389 lbs_deb_enter(LBS_DEB_ASSOC);
1390
1391 if (assoc_req->secinfo.WPAenabled || assoc_req->secinfo.WPA2enabled) {
1392 memcpy(&priv->wpa_ie, &assoc_req->wpa_ie, assoc_req->wpa_ie_len);
1393 priv->wpa_ie_len = assoc_req->wpa_ie_len;
1394 } else {
1395 memset(&priv->wpa_ie, 0, MAX_WPA_IE_LEN);
1396 priv->wpa_ie_len = 0;
1397 }
1398
1399 lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
1400 return ret;
1401 }
1402
1403
1404 static int should_deauth_infrastructure(struct lbs_private *priv,
1405 struct assoc_request * assoc_req)
1406 {
1407 int ret = 0;
1408
1409 if (priv->connect_status != LBS_CONNECTED)
1410 return 0;
1411
1412 lbs_deb_enter(LBS_DEB_ASSOC);
1413 if (test_bit(ASSOC_FLAG_SSID, &assoc_req->flags)) {
1414 lbs_deb_assoc("Deauthenticating due to new SSID\n");
1415 ret = 1;
1416 goto out;
1417 }
1418
1419 if (test_bit(ASSOC_FLAG_SECINFO, &assoc_req->flags)) {
1420 if (priv->secinfo.auth_mode != assoc_req->secinfo.auth_mode) {
1421 lbs_deb_assoc("Deauthenticating due to new security\n");
1422 ret = 1;
1423 goto out;
1424 }
1425 }
1426
1427 if (test_bit(ASSOC_FLAG_BSSID, &assoc_req->flags)) {
1428 lbs_deb_assoc("Deauthenticating due to new BSSID\n");
1429 ret = 1;
1430 goto out;
1431 }
1432
1433 if (test_bit(ASSOC_FLAG_CHANNEL, &assoc_req->flags)) {
1434 lbs_deb_assoc("Deauthenticating due to channel switch\n");
1435 ret = 1;
1436 goto out;
1437 }
1438
1439 /* FIXME: deal with 'auto' mode somehow */
1440 if (test_bit(ASSOC_FLAG_MODE, &assoc_req->flags)) {
1441 if (assoc_req->mode != IW_MODE_INFRA) {
1442 lbs_deb_assoc("Deauthenticating due to leaving "
1443 "infra mode\n");
1444 ret = 1;
1445 goto out;
1446 }
1447 }
1448
1449 out:
1450 lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
1451 return ret;
1452 }
1453
1454
1455 static int should_stop_adhoc(struct lbs_private *priv,
1456 struct assoc_request * assoc_req)
1457 {
1458 lbs_deb_enter(LBS_DEB_ASSOC);
1459
1460 if (priv->connect_status != LBS_CONNECTED)
1461 return 0;
1462
1463 if (lbs_ssid_cmp(priv->curbssparams.ssid,
1464 priv->curbssparams.ssid_len,
1465 assoc_req->ssid, assoc_req->ssid_len) != 0)
1466 return 1;
1467
1468 /* FIXME: deal with 'auto' mode somehow */
1469 if (test_bit(ASSOC_FLAG_MODE, &assoc_req->flags)) {
1470 if (assoc_req->mode != IW_MODE_ADHOC)
1471 return 1;
1472 }
1473
1474 if (test_bit(ASSOC_FLAG_CHANNEL, &assoc_req->flags)) {
1475 if (assoc_req->channel != priv->curbssparams.channel)
1476 return 1;
1477 }
1478
1479 lbs_deb_leave(LBS_DEB_ASSOC);
1480 return 0;
1481 }
1482
1483
1484 /**
1485 * @brief This function finds the best SSID in the Scan List
1486 *
1487 * Search the scan table for the best SSID that also matches the current
1488 * adapter network preference (infrastructure or adhoc)
1489 *
1490 * @param priv A pointer to struct lbs_private
1491 *
1492 * @return index in BSSID list
1493 */
1494 static struct bss_descriptor *lbs_find_best_ssid_in_list(
1495 struct lbs_private *priv, uint8_t mode)
1496 {
1497 uint8_t bestrssi = 0;
1498 struct bss_descriptor *iter_bss;
1499 struct bss_descriptor *best_bss = NULL;
1500
1501 lbs_deb_enter(LBS_DEB_SCAN);
1502
1503 mutex_lock(&priv->lock);
1504
1505 list_for_each_entry(iter_bss, &priv->network_list, list) {
1506 switch (mode) {
1507 case IW_MODE_INFRA:
1508 case IW_MODE_ADHOC:
1509 if (!is_network_compatible(priv, iter_bss, mode))
1510 break;
1511 if (SCAN_RSSI(iter_bss->rssi) <= bestrssi)
1512 break;
1513 bestrssi = SCAN_RSSI(iter_bss->rssi);
1514 best_bss = iter_bss;
1515 break;
1516 case IW_MODE_AUTO:
1517 default:
1518 if (SCAN_RSSI(iter_bss->rssi) <= bestrssi)
1519 break;
1520 bestrssi = SCAN_RSSI(iter_bss->rssi);
1521 best_bss = iter_bss;
1522 break;
1523 }
1524 }
1525
1526 mutex_unlock(&priv->lock);
1527 lbs_deb_leave_args(LBS_DEB_SCAN, "best_bss %p", best_bss);
1528 return best_bss;
1529 }
1530
1531 /**
1532 * @brief Find the best AP
1533 *
1534 * Used from association worker.
1535 *
1536 * @param priv A pointer to struct lbs_private structure
1537 * @param pSSID A pointer to AP's ssid
1538 *
1539 * @return 0--success, otherwise--fail
1540 */
1541 static int lbs_find_best_network_ssid(struct lbs_private *priv,
1542 uint8_t *out_ssid, uint8_t *out_ssid_len, uint8_t preferred_mode,
1543 uint8_t *out_mode)
1544 {
1545 int ret = -1;
1546 struct bss_descriptor *found;
1547
1548 lbs_deb_enter(LBS_DEB_SCAN);
1549
1550 priv->scan_ssid_len = 0;
1551 lbs_scan_networks(priv, 1);
1552 if (priv->surpriseremoved)
1553 goto out;
1554
1555 found = lbs_find_best_ssid_in_list(priv, preferred_mode);
1556 if (found && (found->ssid_len > 0)) {
1557 memcpy(out_ssid, &found->ssid, IW_ESSID_MAX_SIZE);
1558 *out_ssid_len = found->ssid_len;
1559 *out_mode = found->mode;
1560 ret = 0;
1561 }
1562
1563 out:
1564 lbs_deb_leave_args(LBS_DEB_SCAN, "ret %d", ret);
1565 return ret;
1566 }
1567
1568
1569 void lbs_association_worker(struct work_struct *work)
1570 {
1571 struct lbs_private *priv = container_of(work, struct lbs_private,
1572 assoc_work.work);
1573 struct assoc_request * assoc_req = NULL;
1574 int ret = 0;
1575 int find_any_ssid = 0;
1576 DECLARE_SSID_BUF(ssid);
1577
1578 lbs_deb_enter(LBS_DEB_ASSOC);
1579
1580 mutex_lock(&priv->lock);
1581 assoc_req = priv->pending_assoc_req;
1582 priv->pending_assoc_req = NULL;
1583 priv->in_progress_assoc_req = assoc_req;
1584 mutex_unlock(&priv->lock);
1585
1586 if (!assoc_req)
1587 goto done;
1588
1589 lbs_deb_assoc(
1590 "Association Request:\n"
1591 " flags: 0x%08lx\n"
1592 " SSID: '%s'\n"
1593 " chann: %d\n"
1594 " band: %d\n"
1595 " mode: %d\n"
1596 " BSSID: %pM\n"
1597 " secinfo: %s%s%s\n"
1598 " auth_mode: %d\n",
1599 assoc_req->flags,
1600 print_ssid(ssid, assoc_req->ssid, assoc_req->ssid_len),
1601 assoc_req->channel, assoc_req->band, assoc_req->mode,
1602 assoc_req->bssid,
1603 assoc_req->secinfo.WPAenabled ? " WPA" : "",
1604 assoc_req->secinfo.WPA2enabled ? " WPA2" : "",
1605 assoc_req->secinfo.wep_enabled ? " WEP" : "",
1606 assoc_req->secinfo.auth_mode);
1607
1608 /* If 'any' SSID was specified, find an SSID to associate with */
1609 if (test_bit(ASSOC_FLAG_SSID, &assoc_req->flags)
1610 && !assoc_req->ssid_len)
1611 find_any_ssid = 1;
1612
1613 /* But don't use 'any' SSID if there's a valid locked BSSID to use */
1614 if (test_bit(ASSOC_FLAG_BSSID, &assoc_req->flags)) {
1615 if (compare_ether_addr(assoc_req->bssid, bssid_any)
1616 && compare_ether_addr(assoc_req->bssid, bssid_off))
1617 find_any_ssid = 0;
1618 }
1619
1620 if (find_any_ssid) {
1621 u8 new_mode = assoc_req->mode;
1622
1623 ret = lbs_find_best_network_ssid(priv, assoc_req->ssid,
1624 &assoc_req->ssid_len, assoc_req->mode, &new_mode);
1625 if (ret) {
1626 lbs_deb_assoc("Could not find best network\n");
1627 ret = -ENETUNREACH;
1628 goto out;
1629 }
1630
1631 /* Ensure we switch to the mode of the AP */
1632 if (assoc_req->mode == IW_MODE_AUTO) {
1633 set_bit(ASSOC_FLAG_MODE, &assoc_req->flags);
1634 assoc_req->mode = new_mode;
1635 }
1636 }
1637
1638 /*
1639 * Check if the attributes being changing require deauthentication
1640 * from the currently associated infrastructure access point.
1641 */
1642 if (priv->mode == IW_MODE_INFRA) {
1643 if (should_deauth_infrastructure(priv, assoc_req)) {
1644 ret = lbs_cmd_80211_deauthenticate(priv,
1645 priv->curbssparams.bssid,
1646 WLAN_REASON_DEAUTH_LEAVING);
1647 if (ret) {
1648 lbs_deb_assoc("Deauthentication due to new "
1649 "configuration request failed: %d\n",
1650 ret);
1651 }
1652 }
1653 } else if (priv->mode == IW_MODE_ADHOC) {
1654 if (should_stop_adhoc(priv, assoc_req)) {
1655 ret = lbs_adhoc_stop(priv);
1656 if (ret) {
1657 lbs_deb_assoc("Teardown of AdHoc network due to "
1658 "new configuration request failed: %d\n",
1659 ret);
1660 }
1661
1662 }
1663 }
1664
1665 /* Send the various configuration bits to the firmware */
1666 if (test_bit(ASSOC_FLAG_MODE, &assoc_req->flags)) {
1667 ret = assoc_helper_mode(priv, assoc_req);
1668 if (ret)
1669 goto out;
1670 }
1671
1672 if (test_bit(ASSOC_FLAG_CHANNEL, &assoc_req->flags)) {
1673 ret = assoc_helper_channel(priv, assoc_req);
1674 if (ret)
1675 goto out;
1676 }
1677
1678 if ( test_bit(ASSOC_FLAG_WEP_KEYS, &assoc_req->flags)
1679 || test_bit(ASSOC_FLAG_WEP_TX_KEYIDX, &assoc_req->flags)) {
1680 ret = assoc_helper_wep_keys(priv, assoc_req);
1681 if (ret)
1682 goto out;
1683 }
1684
1685 if (test_bit(ASSOC_FLAG_SECINFO, &assoc_req->flags)) {
1686 ret = assoc_helper_secinfo(priv, assoc_req);
1687 if (ret)
1688 goto out;
1689 }
1690
1691 if (test_bit(ASSOC_FLAG_WPA_IE, &assoc_req->flags)) {
1692 ret = assoc_helper_wpa_ie(priv, assoc_req);
1693 if (ret)
1694 goto out;
1695 }
1696
1697 if (test_bit(ASSOC_FLAG_WPA_MCAST_KEY, &assoc_req->flags)
1698 || test_bit(ASSOC_FLAG_WPA_UCAST_KEY, &assoc_req->flags)) {
1699 ret = assoc_helper_wpa_keys(priv, assoc_req);
1700 if (ret)
1701 goto out;
1702 }
1703
1704 /* SSID/BSSID should be the _last_ config option set, because they
1705 * trigger the association attempt.
1706 */
1707 if (test_bit(ASSOC_FLAG_BSSID, &assoc_req->flags)
1708 || test_bit(ASSOC_FLAG_SSID, &assoc_req->flags)) {
1709 int success = 1;
1710
1711 ret = assoc_helper_associate(priv, assoc_req);
1712 if (ret) {
1713 lbs_deb_assoc("ASSOC: association unsuccessful: %d\n",
1714 ret);
1715 success = 0;
1716 }
1717
1718 if (priv->connect_status != LBS_CONNECTED) {
1719 lbs_deb_assoc("ASSOC: association unsuccessful, "
1720 "not connected\n");
1721 success = 0;
1722 }
1723
1724 if (success) {
1725 lbs_deb_assoc("associated to %pM\n",
1726 priv->curbssparams.bssid);
1727 lbs_prepare_and_send_command(priv,
1728 CMD_802_11_RSSI,
1729 0, CMD_OPTION_WAITFORRSP, 0, NULL);
1730 } else {
1731 ret = -1;
1732 }
1733 }
1734
1735 out:
1736 if (ret) {
1737 lbs_deb_assoc("ASSOC: reconfiguration attempt unsuccessful: %d\n",
1738 ret);
1739 }
1740
1741 mutex_lock(&priv->lock);
1742 priv->in_progress_assoc_req = NULL;
1743 mutex_unlock(&priv->lock);
1744 kfree(assoc_req);
1745
1746 done:
1747 lbs_deb_leave(LBS_DEB_ASSOC);
1748 }
1749
1750
1751 /*
1752 * Caller MUST hold any necessary locks
1753 */
1754 struct assoc_request *lbs_get_association_request(struct lbs_private *priv)
1755 {
1756 struct assoc_request * assoc_req;
1757
1758 lbs_deb_enter(LBS_DEB_ASSOC);
1759 if (!priv->pending_assoc_req) {
1760 priv->pending_assoc_req = kzalloc(sizeof(struct assoc_request),
1761 GFP_KERNEL);
1762 if (!priv->pending_assoc_req) {
1763 lbs_pr_info("Not enough memory to allocate association"
1764 " request!\n");
1765 return NULL;
1766 }
1767 }
1768
1769 /* Copy current configuration attributes to the association request,
1770 * but don't overwrite any that are already set.
1771 */
1772 assoc_req = priv->pending_assoc_req;
1773 if (!test_bit(ASSOC_FLAG_SSID, &assoc_req->flags)) {
1774 memcpy(&assoc_req->ssid, &priv->curbssparams.ssid,
1775 IW_ESSID_MAX_SIZE);
1776 assoc_req->ssid_len = priv->curbssparams.ssid_len;
1777 }
1778
1779 if (!test_bit(ASSOC_FLAG_CHANNEL, &assoc_req->flags))
1780 assoc_req->channel = priv->curbssparams.channel;
1781
1782 if (!test_bit(ASSOC_FLAG_BAND, &assoc_req->flags))
1783 assoc_req->band = priv->curbssparams.band;
1784
1785 if (!test_bit(ASSOC_FLAG_MODE, &assoc_req->flags))
1786 assoc_req->mode = priv->mode;
1787
1788 if (!test_bit(ASSOC_FLAG_BSSID, &assoc_req->flags)) {
1789 memcpy(&assoc_req->bssid, priv->curbssparams.bssid,
1790 ETH_ALEN);
1791 }
1792
1793 if (!test_bit(ASSOC_FLAG_WEP_KEYS, &assoc_req->flags)) {
1794 int i;
1795 for (i = 0; i < 4; i++) {
1796 memcpy(&assoc_req->wep_keys[i], &priv->wep_keys[i],
1797 sizeof(struct enc_key));
1798 }
1799 }
1800
1801 if (!test_bit(ASSOC_FLAG_WEP_TX_KEYIDX, &assoc_req->flags))
1802 assoc_req->wep_tx_keyidx = priv->wep_tx_keyidx;
1803
1804 if (!test_bit(ASSOC_FLAG_WPA_MCAST_KEY, &assoc_req->flags)) {
1805 memcpy(&assoc_req->wpa_mcast_key, &priv->wpa_mcast_key,
1806 sizeof(struct enc_key));
1807 }
1808
1809 if (!test_bit(ASSOC_FLAG_WPA_UCAST_KEY, &assoc_req->flags)) {
1810 memcpy(&assoc_req->wpa_unicast_key, &priv->wpa_unicast_key,
1811 sizeof(struct enc_key));
1812 }
1813
1814 if (!test_bit(ASSOC_FLAG_SECINFO, &assoc_req->flags)) {
1815 memcpy(&assoc_req->secinfo, &priv->secinfo,
1816 sizeof(struct lbs_802_11_security));
1817 }
1818
1819 if (!test_bit(ASSOC_FLAG_WPA_IE, &assoc_req->flags)) {
1820 memcpy(&assoc_req->wpa_ie, &priv->wpa_ie,
1821 MAX_WPA_IE_LEN);
1822 assoc_req->wpa_ie_len = priv->wpa_ie_len;
1823 }
1824
1825 lbs_deb_leave(LBS_DEB_ASSOC);
1826 return assoc_req;
1827 }
1828
1829
1830 /**
1831 * @brief Deauthenticate from a specific BSS
1832 *
1833 * @param priv A pointer to struct lbs_private structure
1834 * @param bssid The specific BSS to deauthenticate from
1835 * @param reason The 802.11 sec. 7.3.1.7 Reason Code for deauthenticating
1836 *
1837 * @return 0 on success, error on failure
1838 */
1839 int lbs_cmd_80211_deauthenticate(struct lbs_private *priv, u8 bssid[ETH_ALEN],
1840 u16 reason)
1841 {
1842 struct cmd_ds_802_11_deauthenticate cmd;
1843 int ret;
1844
1845 lbs_deb_enter(LBS_DEB_JOIN);
1846
1847 memset(&cmd, 0, sizeof(cmd));
1848 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1849 memcpy(cmd.macaddr, &bssid[0], ETH_ALEN);
1850 cmd.reasoncode = cpu_to_le16(reason);
1851
1852 ret = lbs_cmd_with_response(priv, CMD_802_11_DEAUTHENTICATE, &cmd);
1853
1854 /* Clean up everything even if there was an error; can't assume that
1855 * we're still authenticated to the AP after trying to deauth.
1856 */
1857 lbs_mac_event_disconnected(priv);
1858
1859 lbs_deb_leave(LBS_DEB_JOIN);
1860 return ret;
1861 }
1862
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