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net: convert print_mac to %pM
[deliverable/linux.git] / drivers / net / wireless / libertas / assoc.c
1 /* Copyright (C) 2006, Red Hat, Inc. */
2
3 #include <linux/etherdevice.h>
4
5 #include "assoc.h"
6 #include "decl.h"
7 #include "host.h"
8 #include "scan.h"
9 #include "cmd.h"
10
11 static int lbs_adhoc_post(struct lbs_private *priv, struct cmd_header *resp);
12
13 static const u8 bssid_any[ETH_ALEN] __attribute__ ((aligned (2))) =
14 { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
15 static const u8 bssid_off[ETH_ALEN] __attribute__ ((aligned (2))) =
16 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
17
18 /* The firmware needs certain bits masked out of the beacon-derviced capability
19 * field when associating/joining to BSSs.
20 */
21 #define CAPINFO_MASK (~(0xda00))
22
23
24 /**
25 * @brief This function finds common rates between rates and card rates.
26 *
27 * It will fill common rates in rates as output if found.
28 *
29 * NOTE: Setting the MSB of the basic rates need to be taken
30 * care, either before or after calling this function
31 *
32 * @param priv A pointer to struct lbs_private structure
33 * @param rates the buffer which keeps input and output
34 * @param rates_size the size of rate1 buffer; new size of buffer on return
35 *
36 * @return 0 on success, or -1 on error
37 */
38 static int get_common_rates(struct lbs_private *priv,
39 u8 *rates,
40 u16 *rates_size)
41 {
42 u8 *card_rates = lbs_bg_rates;
43 size_t num_card_rates = sizeof(lbs_bg_rates);
44 int ret = 0, i, j;
45 u8 tmp[30];
46 size_t tmp_size = 0;
47
48 /* For each rate in card_rates that exists in rate1, copy to tmp */
49 for (i = 0; card_rates[i] && (i < num_card_rates); i++) {
50 for (j = 0; rates[j] && (j < *rates_size); j++) {
51 if (rates[j] == card_rates[i])
52 tmp[tmp_size++] = card_rates[i];
53 }
54 }
55
56 lbs_deb_hex(LBS_DEB_JOIN, "AP rates ", rates, *rates_size);
57 lbs_deb_hex(LBS_DEB_JOIN, "card rates ", card_rates, num_card_rates);
58 lbs_deb_hex(LBS_DEB_JOIN, "common rates", tmp, tmp_size);
59 lbs_deb_join("TX data rate 0x%02x\n", priv->cur_rate);
60
61 if (!priv->enablehwauto) {
62 for (i = 0; i < tmp_size; i++) {
63 if (tmp[i] == priv->cur_rate)
64 goto done;
65 }
66 lbs_pr_alert("Previously set fixed data rate %#x isn't "
67 "compatible with the network.\n", priv->cur_rate);
68 ret = -1;
69 goto done;
70 }
71 ret = 0;
72
73 done:
74 memset(rates, 0, *rates_size);
75 *rates_size = min_t(int, tmp_size, *rates_size);
76 memcpy(rates, tmp, *rates_size);
77 return ret;
78 }
79
80
81 /**
82 * @brief Sets the MSB on basic rates as the firmware requires
83 *
84 * Scan through an array and set the MSB for basic data rates.
85 *
86 * @param rates buffer of data rates
87 * @param len size of buffer
88 */
89 static void lbs_set_basic_rate_flags(u8 *rates, size_t len)
90 {
91 int i;
92
93 for (i = 0; i < len; i++) {
94 if (rates[i] == 0x02 || rates[i] == 0x04 ||
95 rates[i] == 0x0b || rates[i] == 0x16)
96 rates[i] |= 0x80;
97 }
98 }
99
100
101 /**
102 * @brief Associate to a specific BSS discovered in a scan
103 *
104 * @param priv A pointer to struct lbs_private structure
105 * @param assoc_req The association request describing the BSS to associate with
106 *
107 * @return 0-success, otherwise fail
108 */
109 static int lbs_associate(struct lbs_private *priv,
110 struct assoc_request *assoc_req)
111 {
112 int ret;
113 u8 preamble = RADIO_PREAMBLE_LONG;
114
115 lbs_deb_enter(LBS_DEB_ASSOC);
116
117 ret = lbs_prepare_and_send_command(priv, CMD_802_11_AUTHENTICATE,
118 0, CMD_OPTION_WAITFORRSP,
119 0, assoc_req->bss.bssid);
120 if (ret)
121 goto out;
122
123 /* Use short preamble only when both the BSS and firmware support it */
124 if ((priv->capability & WLAN_CAPABILITY_SHORT_PREAMBLE) &&
125 (assoc_req->bss.capability & WLAN_CAPABILITY_SHORT_PREAMBLE))
126 preamble = RADIO_PREAMBLE_SHORT;
127
128 ret = lbs_set_radio(priv, preamble, 1);
129 if (ret)
130 goto out;
131
132 ret = lbs_prepare_and_send_command(priv, CMD_802_11_ASSOCIATE,
133 0, CMD_OPTION_WAITFORRSP, 0, assoc_req);
134
135 out:
136 lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
137 return ret;
138 }
139
140 /**
141 * @brief Join an adhoc network found in a previous scan
142 *
143 * @param priv A pointer to struct lbs_private structure
144 * @param assoc_req The association request describing the BSS to join
145 *
146 * @return 0 on success, error on failure
147 */
148 static int lbs_adhoc_join(struct lbs_private *priv,
149 struct assoc_request *assoc_req)
150 {
151 struct cmd_ds_802_11_ad_hoc_join cmd;
152 struct bss_descriptor *bss = &assoc_req->bss;
153 u8 preamble = RADIO_PREAMBLE_LONG;
154 u16 ratesize = 0;
155 int ret = 0;
156
157 lbs_deb_enter(LBS_DEB_ASSOC);
158
159 lbs_deb_join("current SSID '%s', ssid length %u\n",
160 escape_essid(priv->curbssparams.ssid,
161 priv->curbssparams.ssid_len),
162 priv->curbssparams.ssid_len);
163 lbs_deb_join("requested ssid '%s', ssid length %u\n",
164 escape_essid(bss->ssid, bss->ssid_len),
165 bss->ssid_len);
166
167 /* check if the requested SSID is already joined */
168 if (priv->curbssparams.ssid_len &&
169 !lbs_ssid_cmp(priv->curbssparams.ssid,
170 priv->curbssparams.ssid_len,
171 bss->ssid, bss->ssid_len) &&
172 (priv->mode == IW_MODE_ADHOC) &&
173 (priv->connect_status == LBS_CONNECTED)) {
174 union iwreq_data wrqu;
175
176 lbs_deb_join("ADHOC_J_CMD: New ad-hoc SSID is the same as "
177 "current, not attempting to re-join");
178
179 /* Send the re-association event though, because the association
180 * request really was successful, even if just a null-op.
181 */
182 memset(&wrqu, 0, sizeof(wrqu));
183 memcpy(wrqu.ap_addr.sa_data, priv->curbssparams.bssid,
184 ETH_ALEN);
185 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
186 wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
187 goto out;
188 }
189
190 /* Use short preamble only when both the BSS and firmware support it */
191 if ((priv->capability & WLAN_CAPABILITY_SHORT_PREAMBLE) &&
192 (bss->capability & WLAN_CAPABILITY_SHORT_PREAMBLE)) {
193 lbs_deb_join("AdhocJoin: Short preamble\n");
194 preamble = RADIO_PREAMBLE_SHORT;
195 }
196
197 ret = lbs_set_radio(priv, preamble, 1);
198 if (ret)
199 goto out;
200
201 lbs_deb_join("AdhocJoin: channel = %d\n", assoc_req->channel);
202 lbs_deb_join("AdhocJoin: band = %c\n", assoc_req->band);
203
204 priv->adhoccreate = 0;
205 priv->curbssparams.channel = bss->channel;
206
207 /* Build the join command */
208 memset(&cmd, 0, sizeof(cmd));
209 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
210
211 cmd.bss.type = CMD_BSS_TYPE_IBSS;
212 cmd.bss.beaconperiod = cpu_to_le16(bss->beaconperiod);
213
214 memcpy(&cmd.bss.bssid, &bss->bssid, ETH_ALEN);
215 memcpy(&cmd.bss.ssid, &bss->ssid, bss->ssid_len);
216
217 memcpy(&cmd.bss.phyparamset, &bss->phyparamset,
218 sizeof(union ieeetypes_phyparamset));
219
220 memcpy(&cmd.bss.ssparamset, &bss->ssparamset,
221 sizeof(union IEEEtypes_ssparamset));
222
223 cmd.bss.capability = cpu_to_le16(bss->capability & CAPINFO_MASK);
224 lbs_deb_join("ADHOC_J_CMD: tmpcap=%4X CAPINFO_MASK=%4X\n",
225 bss->capability, CAPINFO_MASK);
226
227 /* information on BSSID descriptor passed to FW */
228 lbs_deb_join("ADHOC_J_CMD: BSSID = %pM, SSID = '%s'\n",
229 cmd.bss.bssid, cmd.bss.ssid);
230
231 /* Only v8 and below support setting these */
232 if (priv->fwrelease < 0x09000000) {
233 /* failtimeout */
234 cmd.failtimeout = cpu_to_le16(MRVDRV_ASSOCIATION_TIME_OUT);
235 /* probedelay */
236 cmd.probedelay = cpu_to_le16(CMD_SCAN_PROBE_DELAY_TIME);
237 }
238
239 /* Copy Data rates from the rates recorded in scan response */
240 memset(cmd.bss.rates, 0, sizeof(cmd.bss.rates));
241 ratesize = min_t(u16, sizeof(cmd.bss.rates), MAX_RATES);
242 memcpy(cmd.bss.rates, bss->rates, ratesize);
243 if (get_common_rates(priv, cmd.bss.rates, &ratesize)) {
244 lbs_deb_join("ADHOC_JOIN: get_common_rates returned error.\n");
245 ret = -1;
246 goto out;
247 }
248
249 /* Copy the ad-hoc creation rates into Current BSS state structure */
250 memset(&priv->curbssparams.rates, 0, sizeof(priv->curbssparams.rates));
251 memcpy(&priv->curbssparams.rates, cmd.bss.rates, ratesize);
252
253 /* Set MSB on basic rates as the firmware requires, but _after_
254 * copying to current bss rates.
255 */
256 lbs_set_basic_rate_flags(cmd.bss.rates, ratesize);
257
258 cmd.bss.ssparamset.ibssparamset.atimwindow = cpu_to_le16(bss->atimwindow);
259
260 if (assoc_req->secinfo.wep_enabled) {
261 u16 tmp = le16_to_cpu(cmd.bss.capability);
262 tmp |= WLAN_CAPABILITY_PRIVACY;
263 cmd.bss.capability = cpu_to_le16(tmp);
264 }
265
266 if (priv->psmode == LBS802_11POWERMODEMAX_PSP) {
267 __le32 local_ps_mode = cpu_to_le32(LBS802_11POWERMODECAM);
268
269 /* wake up first */
270 ret = lbs_prepare_and_send_command(priv, CMD_802_11_PS_MODE,
271 CMD_ACT_SET, 0, 0,
272 &local_ps_mode);
273 if (ret) {
274 ret = -1;
275 goto out;
276 }
277 }
278
279 if (lbs_parse_dnld_countryinfo_11d(priv, bss)) {
280 ret = -1;
281 goto out;
282 }
283
284 ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_JOIN, &cmd);
285 if (ret == 0)
286 ret = lbs_adhoc_post(priv, (struct cmd_header *) &cmd);
287
288 out:
289 lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
290 return ret;
291 }
292
293 /**
294 * @brief Start an Adhoc Network
295 *
296 * @param priv A pointer to struct lbs_private structure
297 * @param assoc_req The association request describing the BSS to start
298 *
299 * @return 0 on success, error on failure
300 */
301 static int lbs_adhoc_start(struct lbs_private *priv,
302 struct assoc_request *assoc_req)
303 {
304 struct cmd_ds_802_11_ad_hoc_start cmd;
305 u8 preamble = RADIO_PREAMBLE_LONG;
306 size_t ratesize = 0;
307 u16 tmpcap = 0;
308 int ret = 0;
309
310 lbs_deb_enter(LBS_DEB_ASSOC);
311
312 if (priv->capability & WLAN_CAPABILITY_SHORT_PREAMBLE) {
313 lbs_deb_join("ADHOC_START: Will use short preamble\n");
314 preamble = RADIO_PREAMBLE_SHORT;
315 }
316
317 ret = lbs_set_radio(priv, preamble, 1);
318 if (ret)
319 goto out;
320
321 /* Build the start command */
322 memset(&cmd, 0, sizeof(cmd));
323 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
324
325 memcpy(cmd.ssid, assoc_req->ssid, assoc_req->ssid_len);
326
327 lbs_deb_join("ADHOC_START: SSID '%s', ssid length %u\n",
328 escape_essid(assoc_req->ssid, assoc_req->ssid_len),
329 assoc_req->ssid_len);
330
331 cmd.bsstype = CMD_BSS_TYPE_IBSS;
332
333 if (priv->beacon_period == 0)
334 priv->beacon_period = MRVDRV_BEACON_INTERVAL;
335 cmd.beaconperiod = cpu_to_le16(priv->beacon_period);
336
337 WARN_ON(!assoc_req->channel);
338
339 /* set Physical parameter set */
340 cmd.phyparamset.dsparamset.elementid = MFIE_TYPE_DS_SET;
341 cmd.phyparamset.dsparamset.len = 1;
342 cmd.phyparamset.dsparamset.currentchan = assoc_req->channel;
343
344 /* set IBSS parameter set */
345 cmd.ssparamset.ibssparamset.elementid = MFIE_TYPE_IBSS_SET;
346 cmd.ssparamset.ibssparamset.len = 2;
347 cmd.ssparamset.ibssparamset.atimwindow = 0;
348
349 /* set capability info */
350 tmpcap = WLAN_CAPABILITY_IBSS;
351 if (assoc_req->secinfo.wep_enabled) {
352 lbs_deb_join("ADHOC_START: WEP enabled, setting privacy on\n");
353 tmpcap |= WLAN_CAPABILITY_PRIVACY;
354 } else
355 lbs_deb_join("ADHOC_START: WEP disabled, setting privacy off\n");
356
357 cmd.capability = cpu_to_le16(tmpcap);
358
359 /* Only v8 and below support setting probe delay */
360 if (priv->fwrelease < 0x09000000)
361 cmd.probedelay = cpu_to_le16(CMD_SCAN_PROBE_DELAY_TIME);
362
363 ratesize = min(sizeof(cmd.rates), sizeof(lbs_bg_rates));
364 memcpy(cmd.rates, lbs_bg_rates, ratesize);
365
366 /* Copy the ad-hoc creating rates into Current BSS state structure */
367 memset(&priv->curbssparams.rates, 0, sizeof(priv->curbssparams.rates));
368 memcpy(&priv->curbssparams.rates, &cmd.rates, ratesize);
369
370 /* Set MSB on basic rates as the firmware requires, but _after_
371 * copying to current bss rates.
372 */
373 lbs_set_basic_rate_flags(cmd.rates, ratesize);
374
375 lbs_deb_join("ADHOC_START: rates=%02x %02x %02x %02x\n",
376 cmd.rates[0], cmd.rates[1], cmd.rates[2], cmd.rates[3]);
377
378 if (lbs_create_dnld_countryinfo_11d(priv)) {
379 lbs_deb_join("ADHOC_START: dnld_countryinfo_11d failed\n");
380 ret = -1;
381 goto out;
382 }
383
384 lbs_deb_join("ADHOC_START: Starting Ad-Hoc BSS on channel %d, band %d\n",
385 assoc_req->channel, assoc_req->band);
386
387 priv->adhoccreate = 1;
388 priv->mode = IW_MODE_ADHOC;
389
390 ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_START, &cmd);
391 if (ret == 0)
392 ret = lbs_adhoc_post(priv, (struct cmd_header *) &cmd);
393
394 out:
395 lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
396 return ret;
397 }
398
399 /**
400 * @brief Stop and Ad-Hoc network and exit Ad-Hoc mode
401 *
402 * @param priv A pointer to struct lbs_private structure
403 * @return 0 on success, or an error
404 */
405 int lbs_adhoc_stop(struct lbs_private *priv)
406 {
407 struct cmd_ds_802_11_ad_hoc_stop cmd;
408 int ret;
409
410 lbs_deb_enter(LBS_DEB_JOIN);
411
412 memset(&cmd, 0, sizeof (cmd));
413 cmd.hdr.size = cpu_to_le16 (sizeof (cmd));
414
415 ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_STOP, &cmd);
416
417 /* Clean up everything even if there was an error */
418 lbs_mac_event_disconnected(priv);
419
420 lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
421 return ret;
422 }
423
424 static inline int match_bss_no_security(struct lbs_802_11_security *secinfo,
425 struct bss_descriptor *match_bss)
426 {
427 if (!secinfo->wep_enabled && !secinfo->WPAenabled
428 && !secinfo->WPA2enabled
429 && match_bss->wpa_ie[0] != MFIE_TYPE_GENERIC
430 && match_bss->rsn_ie[0] != MFIE_TYPE_RSN
431 && !(match_bss->capability & WLAN_CAPABILITY_PRIVACY))
432 return 1;
433 else
434 return 0;
435 }
436
437 static inline int match_bss_static_wep(struct lbs_802_11_security *secinfo,
438 struct bss_descriptor *match_bss)
439 {
440 if (secinfo->wep_enabled && !secinfo->WPAenabled
441 && !secinfo->WPA2enabled
442 && (match_bss->capability & WLAN_CAPABILITY_PRIVACY))
443 return 1;
444 else
445 return 0;
446 }
447
448 static inline int match_bss_wpa(struct lbs_802_11_security *secinfo,
449 struct bss_descriptor *match_bss)
450 {
451 if (!secinfo->wep_enabled && secinfo->WPAenabled
452 && (match_bss->wpa_ie[0] == MFIE_TYPE_GENERIC)
453 /* privacy bit may NOT be set in some APs like LinkSys WRT54G
454 && (match_bss->capability & WLAN_CAPABILITY_PRIVACY) */
455 )
456 return 1;
457 else
458 return 0;
459 }
460
461 static inline int match_bss_wpa2(struct lbs_802_11_security *secinfo,
462 struct bss_descriptor *match_bss)
463 {
464 if (!secinfo->wep_enabled && secinfo->WPA2enabled &&
465 (match_bss->rsn_ie[0] == MFIE_TYPE_RSN)
466 /* privacy bit may NOT be set in some APs like LinkSys WRT54G
467 (match_bss->capability & WLAN_CAPABILITY_PRIVACY) */
468 )
469 return 1;
470 else
471 return 0;
472 }
473
474 static inline int match_bss_dynamic_wep(struct lbs_802_11_security *secinfo,
475 struct bss_descriptor *match_bss)
476 {
477 if (!secinfo->wep_enabled && !secinfo->WPAenabled
478 && !secinfo->WPA2enabled
479 && (match_bss->wpa_ie[0] != MFIE_TYPE_GENERIC)
480 && (match_bss->rsn_ie[0] != MFIE_TYPE_RSN)
481 && (match_bss->capability & WLAN_CAPABILITY_PRIVACY))
482 return 1;
483 else
484 return 0;
485 }
486
487 /**
488 * @brief Check if a scanned network compatible with the driver settings
489 *
490 * WEP WPA WPA2 ad-hoc encrypt Network
491 * enabled enabled enabled AES mode privacy WPA WPA2 Compatible
492 * 0 0 0 0 NONE 0 0 0 yes No security
493 * 1 0 0 0 NONE 1 0 0 yes Static WEP
494 * 0 1 0 0 x 1x 1 x yes WPA
495 * 0 0 1 0 x 1x x 1 yes WPA2
496 * 0 0 0 1 NONE 1 0 0 yes Ad-hoc AES
497 * 0 0 0 0 !=NONE 1 0 0 yes Dynamic WEP
498 *
499 *
500 * @param priv A pointer to struct lbs_private
501 * @param index Index in scantable to check against current driver settings
502 * @param mode Network mode: Infrastructure or IBSS
503 *
504 * @return Index in scantable, or error code if negative
505 */
506 static int is_network_compatible(struct lbs_private *priv,
507 struct bss_descriptor *bss, uint8_t mode)
508 {
509 int matched = 0;
510
511 lbs_deb_enter(LBS_DEB_SCAN);
512
513 if (bss->mode != mode)
514 goto done;
515
516 matched = match_bss_no_security(&priv->secinfo, bss);
517 if (matched)
518 goto done;
519 matched = match_bss_static_wep(&priv->secinfo, bss);
520 if (matched)
521 goto done;
522 matched = match_bss_wpa(&priv->secinfo, bss);
523 if (matched) {
524 lbs_deb_scan("is_network_compatible() WPA: wpa_ie 0x%x "
525 "wpa2_ie 0x%x WEP %s WPA %s WPA2 %s "
526 "privacy 0x%x\n", bss->wpa_ie[0], bss->rsn_ie[0],
527 priv->secinfo.wep_enabled ? "e" : "d",
528 priv->secinfo.WPAenabled ? "e" : "d",
529 priv->secinfo.WPA2enabled ? "e" : "d",
530 (bss->capability & WLAN_CAPABILITY_PRIVACY));
531 goto done;
532 }
533 matched = match_bss_wpa2(&priv->secinfo, bss);
534 if (matched) {
535 lbs_deb_scan("is_network_compatible() WPA2: wpa_ie 0x%x "
536 "wpa2_ie 0x%x WEP %s WPA %s WPA2 %s "
537 "privacy 0x%x\n", bss->wpa_ie[0], bss->rsn_ie[0],
538 priv->secinfo.wep_enabled ? "e" : "d",
539 priv->secinfo.WPAenabled ? "e" : "d",
540 priv->secinfo.WPA2enabled ? "e" : "d",
541 (bss->capability & WLAN_CAPABILITY_PRIVACY));
542 goto done;
543 }
544 matched = match_bss_dynamic_wep(&priv->secinfo, bss);
545 if (matched) {
546 lbs_deb_scan("is_network_compatible() dynamic WEP: "
547 "wpa_ie 0x%x wpa2_ie 0x%x privacy 0x%x\n",
548 bss->wpa_ie[0], bss->rsn_ie[0],
549 (bss->capability & WLAN_CAPABILITY_PRIVACY));
550 goto done;
551 }
552
553 /* bss security settings don't match those configured on card */
554 lbs_deb_scan("is_network_compatible() FAILED: wpa_ie 0x%x "
555 "wpa2_ie 0x%x WEP %s WPA %s WPA2 %s privacy 0x%x\n",
556 bss->wpa_ie[0], bss->rsn_ie[0],
557 priv->secinfo.wep_enabled ? "e" : "d",
558 priv->secinfo.WPAenabled ? "e" : "d",
559 priv->secinfo.WPA2enabled ? "e" : "d",
560 (bss->capability & WLAN_CAPABILITY_PRIVACY));
561
562 done:
563 lbs_deb_leave_args(LBS_DEB_SCAN, "matched: %d", matched);
564 return matched;
565 }
566
567 /**
568 * @brief This function finds a specific compatible BSSID in the scan list
569 *
570 * Used in association code
571 *
572 * @param priv A pointer to struct lbs_private
573 * @param bssid BSSID to find in the scan list
574 * @param mode Network mode: Infrastructure or IBSS
575 *
576 * @return index in BSSID list, or error return code (< 0)
577 */
578 static struct bss_descriptor *lbs_find_bssid_in_list(struct lbs_private *priv,
579 uint8_t *bssid, uint8_t mode)
580 {
581 struct bss_descriptor *iter_bss;
582 struct bss_descriptor *found_bss = NULL;
583
584 lbs_deb_enter(LBS_DEB_SCAN);
585
586 if (!bssid)
587 goto out;
588
589 lbs_deb_hex(LBS_DEB_SCAN, "looking for", bssid, ETH_ALEN);
590
591 /* Look through the scan table for a compatible match. The loop will
592 * continue past a matched bssid that is not compatible in case there
593 * is an AP with multiple SSIDs assigned to the same BSSID
594 */
595 mutex_lock(&priv->lock);
596 list_for_each_entry(iter_bss, &priv->network_list, list) {
597 if (compare_ether_addr(iter_bss->bssid, bssid))
598 continue; /* bssid doesn't match */
599 switch (mode) {
600 case IW_MODE_INFRA:
601 case IW_MODE_ADHOC:
602 if (!is_network_compatible(priv, iter_bss, mode))
603 break;
604 found_bss = iter_bss;
605 break;
606 default:
607 found_bss = iter_bss;
608 break;
609 }
610 }
611 mutex_unlock(&priv->lock);
612
613 out:
614 lbs_deb_leave_args(LBS_DEB_SCAN, "found_bss %p", found_bss);
615 return found_bss;
616 }
617
618 /**
619 * @brief This function finds ssid in ssid list.
620 *
621 * Used in association code
622 *
623 * @param priv A pointer to struct lbs_private
624 * @param ssid SSID to find in the list
625 * @param bssid BSSID to qualify the SSID selection (if provided)
626 * @param mode Network mode: Infrastructure or IBSS
627 *
628 * @return index in BSSID list
629 */
630 static struct bss_descriptor *lbs_find_ssid_in_list(struct lbs_private *priv,
631 uint8_t *ssid, uint8_t ssid_len,
632 uint8_t *bssid, uint8_t mode,
633 int channel)
634 {
635 u32 bestrssi = 0;
636 struct bss_descriptor *iter_bss = NULL;
637 struct bss_descriptor *found_bss = NULL;
638 struct bss_descriptor *tmp_oldest = NULL;
639
640 lbs_deb_enter(LBS_DEB_SCAN);
641
642 mutex_lock(&priv->lock);
643
644 list_for_each_entry(iter_bss, &priv->network_list, list) {
645 if (!tmp_oldest ||
646 (iter_bss->last_scanned < tmp_oldest->last_scanned))
647 tmp_oldest = iter_bss;
648
649 if (lbs_ssid_cmp(iter_bss->ssid, iter_bss->ssid_len,
650 ssid, ssid_len) != 0)
651 continue; /* ssid doesn't match */
652 if (bssid && compare_ether_addr(iter_bss->bssid, bssid) != 0)
653 continue; /* bssid doesn't match */
654 if ((channel > 0) && (iter_bss->channel != channel))
655 continue; /* channel doesn't match */
656
657 switch (mode) {
658 case IW_MODE_INFRA:
659 case IW_MODE_ADHOC:
660 if (!is_network_compatible(priv, iter_bss, mode))
661 break;
662
663 if (bssid) {
664 /* Found requested BSSID */
665 found_bss = iter_bss;
666 goto out;
667 }
668
669 if (SCAN_RSSI(iter_bss->rssi) > bestrssi) {
670 bestrssi = SCAN_RSSI(iter_bss->rssi);
671 found_bss = iter_bss;
672 }
673 break;
674 case IW_MODE_AUTO:
675 default:
676 if (SCAN_RSSI(iter_bss->rssi) > bestrssi) {
677 bestrssi = SCAN_RSSI(iter_bss->rssi);
678 found_bss = iter_bss;
679 }
680 break;
681 }
682 }
683
684 out:
685 mutex_unlock(&priv->lock);
686 lbs_deb_leave_args(LBS_DEB_SCAN, "found_bss %p", found_bss);
687 return found_bss;
688 }
689
690 static int assoc_helper_essid(struct lbs_private *priv,
691 struct assoc_request * assoc_req)
692 {
693 int ret = 0;
694 struct bss_descriptor * bss;
695 int channel = -1;
696
697 lbs_deb_enter(LBS_DEB_ASSOC);
698
699 /* FIXME: take channel into account when picking SSIDs if a channel
700 * is set.
701 */
702
703 if (test_bit(ASSOC_FLAG_CHANNEL, &assoc_req->flags))
704 channel = assoc_req->channel;
705
706 lbs_deb_assoc("SSID '%s' requested\n",
707 escape_essid(assoc_req->ssid, assoc_req->ssid_len));
708 if (assoc_req->mode == IW_MODE_INFRA) {
709 lbs_send_specific_ssid_scan(priv, assoc_req->ssid,
710 assoc_req->ssid_len);
711
712 bss = lbs_find_ssid_in_list(priv, assoc_req->ssid,
713 assoc_req->ssid_len, NULL, IW_MODE_INFRA, channel);
714 if (bss != NULL) {
715 memcpy(&assoc_req->bss, bss, sizeof(struct bss_descriptor));
716 ret = lbs_associate(priv, assoc_req);
717 } else {
718 lbs_deb_assoc("SSID not found; cannot associate\n");
719 }
720 } else if (assoc_req->mode == IW_MODE_ADHOC) {
721 /* Scan for the network, do not save previous results. Stale
722 * scan data will cause us to join a non-existant adhoc network
723 */
724 lbs_send_specific_ssid_scan(priv, assoc_req->ssid,
725 assoc_req->ssid_len);
726
727 /* Search for the requested SSID in the scan table */
728 bss = lbs_find_ssid_in_list(priv, assoc_req->ssid,
729 assoc_req->ssid_len, NULL, IW_MODE_ADHOC, channel);
730 if (bss != NULL) {
731 lbs_deb_assoc("SSID found, will join\n");
732 memcpy(&assoc_req->bss, bss, sizeof(struct bss_descriptor));
733 lbs_adhoc_join(priv, assoc_req);
734 } else {
735 /* else send START command */
736 lbs_deb_assoc("SSID not found, creating adhoc network\n");
737 memcpy(&assoc_req->bss.ssid, &assoc_req->ssid,
738 IW_ESSID_MAX_SIZE);
739 assoc_req->bss.ssid_len = assoc_req->ssid_len;
740 lbs_adhoc_start(priv, assoc_req);
741 }
742 }
743
744 lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
745 return ret;
746 }
747
748
749 static int assoc_helper_bssid(struct lbs_private *priv,
750 struct assoc_request * assoc_req)
751 {
752 int ret = 0;
753 struct bss_descriptor * bss;
754
755 lbs_deb_enter_args(LBS_DEB_ASSOC, "BSSID %pM", assoc_req->bssid);
756
757 /* Search for index position in list for requested MAC */
758 bss = lbs_find_bssid_in_list(priv, assoc_req->bssid,
759 assoc_req->mode);
760 if (bss == NULL) {
761 lbs_deb_assoc("ASSOC: WAP: BSSID %pM not found, "
762 "cannot associate.\n", assoc_req->bssid);
763 goto out;
764 }
765
766 memcpy(&assoc_req->bss, bss, sizeof(struct bss_descriptor));
767 if (assoc_req->mode == IW_MODE_INFRA) {
768 ret = lbs_associate(priv, assoc_req);
769 lbs_deb_assoc("ASSOC: lbs_associate(bssid) returned %d\n", ret);
770 } else if (assoc_req->mode == IW_MODE_ADHOC) {
771 lbs_adhoc_join(priv, assoc_req);
772 }
773
774 out:
775 lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
776 return ret;
777 }
778
779
780 static int assoc_helper_associate(struct lbs_private *priv,
781 struct assoc_request * assoc_req)
782 {
783 int ret = 0, done = 0;
784
785 lbs_deb_enter(LBS_DEB_ASSOC);
786
787 /* If we're given and 'any' BSSID, try associating based on SSID */
788
789 if (test_bit(ASSOC_FLAG_BSSID, &assoc_req->flags)) {
790 if (compare_ether_addr(bssid_any, assoc_req->bssid)
791 && compare_ether_addr(bssid_off, assoc_req->bssid)) {
792 ret = assoc_helper_bssid(priv, assoc_req);
793 done = 1;
794 }
795 }
796
797 if (!done && test_bit(ASSOC_FLAG_SSID, &assoc_req->flags)) {
798 ret = assoc_helper_essid(priv, assoc_req);
799 }
800
801 lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
802 return ret;
803 }
804
805
806 static int assoc_helper_mode(struct lbs_private *priv,
807 struct assoc_request * assoc_req)
808 {
809 int ret = 0;
810
811 lbs_deb_enter(LBS_DEB_ASSOC);
812
813 if (assoc_req->mode == priv->mode)
814 goto done;
815
816 if (assoc_req->mode == IW_MODE_INFRA) {
817 if (priv->psstate != PS_STATE_FULL_POWER)
818 lbs_ps_wakeup(priv, CMD_OPTION_WAITFORRSP);
819 priv->psmode = LBS802_11POWERMODECAM;
820 }
821
822 priv->mode = assoc_req->mode;
823 ret = lbs_set_snmp_mib(priv, SNMP_MIB_OID_BSS_TYPE, assoc_req->mode);
824
825 done:
826 lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
827 return ret;
828 }
829
830 static int assoc_helper_channel(struct lbs_private *priv,
831 struct assoc_request * assoc_req)
832 {
833 int ret = 0;
834
835 lbs_deb_enter(LBS_DEB_ASSOC);
836
837 ret = lbs_update_channel(priv);
838 if (ret) {
839 lbs_deb_assoc("ASSOC: channel: error getting channel.\n");
840 goto done;
841 }
842
843 if (assoc_req->channel == priv->curbssparams.channel)
844 goto done;
845
846 if (priv->mesh_dev) {
847 /* Change mesh channel first; 21.p21 firmware won't let
848 you change channel otherwise (even though it'll return
849 an error to this */
850 lbs_mesh_config(priv, CMD_ACT_MESH_CONFIG_STOP,
851 assoc_req->channel);
852 }
853
854 lbs_deb_assoc("ASSOC: channel: %d -> %d\n",
855 priv->curbssparams.channel, assoc_req->channel);
856
857 ret = lbs_set_channel(priv, assoc_req->channel);
858 if (ret < 0)
859 lbs_deb_assoc("ASSOC: channel: error setting channel.\n");
860
861 /* FIXME: shouldn't need to grab the channel _again_ after setting
862 * it since the firmware is supposed to return the new channel, but
863 * whatever... */
864 ret = lbs_update_channel(priv);
865 if (ret) {
866 lbs_deb_assoc("ASSOC: channel: error getting channel.\n");
867 goto done;
868 }
869
870 if (assoc_req->channel != priv->curbssparams.channel) {
871 lbs_deb_assoc("ASSOC: channel: failed to update channel to %d\n",
872 assoc_req->channel);
873 goto restore_mesh;
874 }
875
876 if ( assoc_req->secinfo.wep_enabled
877 && (assoc_req->wep_keys[0].len
878 || assoc_req->wep_keys[1].len
879 || assoc_req->wep_keys[2].len
880 || assoc_req->wep_keys[3].len)) {
881 /* Make sure WEP keys are re-sent to firmware */
882 set_bit(ASSOC_FLAG_WEP_KEYS, &assoc_req->flags);
883 }
884
885 /* Must restart/rejoin adhoc networks after channel change */
886 set_bit(ASSOC_FLAG_SSID, &assoc_req->flags);
887
888 restore_mesh:
889 if (priv->mesh_dev)
890 lbs_mesh_config(priv, CMD_ACT_MESH_CONFIG_START,
891 priv->curbssparams.channel);
892
893 done:
894 lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
895 return ret;
896 }
897
898
899 static int assoc_helper_wep_keys(struct lbs_private *priv,
900 struct assoc_request *assoc_req)
901 {
902 int i;
903 int ret = 0;
904
905 lbs_deb_enter(LBS_DEB_ASSOC);
906
907 /* Set or remove WEP keys */
908 if (assoc_req->wep_keys[0].len || assoc_req->wep_keys[1].len ||
909 assoc_req->wep_keys[2].len || assoc_req->wep_keys[3].len)
910 ret = lbs_cmd_802_11_set_wep(priv, CMD_ACT_ADD, assoc_req);
911 else
912 ret = lbs_cmd_802_11_set_wep(priv, CMD_ACT_REMOVE, assoc_req);
913
914 if (ret)
915 goto out;
916
917 /* enable/disable the MAC's WEP packet filter */
918 if (assoc_req->secinfo.wep_enabled)
919 priv->mac_control |= CMD_ACT_MAC_WEP_ENABLE;
920 else
921 priv->mac_control &= ~CMD_ACT_MAC_WEP_ENABLE;
922
923 lbs_set_mac_control(priv);
924
925 mutex_lock(&priv->lock);
926
927 /* Copy WEP keys into priv wep key fields */
928 for (i = 0; i < 4; i++) {
929 memcpy(&priv->wep_keys[i], &assoc_req->wep_keys[i],
930 sizeof(struct enc_key));
931 }
932 priv->wep_tx_keyidx = assoc_req->wep_tx_keyidx;
933
934 mutex_unlock(&priv->lock);
935
936 out:
937 lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
938 return ret;
939 }
940
941 static int assoc_helper_secinfo(struct lbs_private *priv,
942 struct assoc_request * assoc_req)
943 {
944 int ret = 0;
945 uint16_t do_wpa;
946 uint16_t rsn = 0;
947
948 lbs_deb_enter(LBS_DEB_ASSOC);
949
950 memcpy(&priv->secinfo, &assoc_req->secinfo,
951 sizeof(struct lbs_802_11_security));
952
953 lbs_set_mac_control(priv);
954
955 /* If RSN is already enabled, don't try to enable it again, since
956 * ENABLE_RSN resets internal state machines and will clobber the
957 * 4-way WPA handshake.
958 */
959
960 /* Get RSN enabled/disabled */
961 ret = lbs_cmd_802_11_enable_rsn(priv, CMD_ACT_GET, &rsn);
962 if (ret) {
963 lbs_deb_assoc("Failed to get RSN status: %d\n", ret);
964 goto out;
965 }
966
967 /* Don't re-enable RSN if it's already enabled */
968 do_wpa = assoc_req->secinfo.WPAenabled || assoc_req->secinfo.WPA2enabled;
969 if (do_wpa == rsn)
970 goto out;
971
972 /* Set RSN enabled/disabled */
973 ret = lbs_cmd_802_11_enable_rsn(priv, CMD_ACT_SET, &do_wpa);
974
975 out:
976 lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
977 return ret;
978 }
979
980
981 static int assoc_helper_wpa_keys(struct lbs_private *priv,
982 struct assoc_request * assoc_req)
983 {
984 int ret = 0;
985 unsigned int flags = assoc_req->flags;
986
987 lbs_deb_enter(LBS_DEB_ASSOC);
988
989 /* Work around older firmware bug where WPA unicast and multicast
990 * keys must be set independently. Seen in SDIO parts with firmware
991 * version 5.0.11p0.
992 */
993
994 if (test_bit(ASSOC_FLAG_WPA_UCAST_KEY, &assoc_req->flags)) {
995 clear_bit(ASSOC_FLAG_WPA_MCAST_KEY, &assoc_req->flags);
996 ret = lbs_cmd_802_11_key_material(priv, CMD_ACT_SET, assoc_req);
997 assoc_req->flags = flags;
998 }
999
1000 if (ret)
1001 goto out;
1002
1003 if (test_bit(ASSOC_FLAG_WPA_MCAST_KEY, &assoc_req->flags)) {
1004 clear_bit(ASSOC_FLAG_WPA_UCAST_KEY, &assoc_req->flags);
1005
1006 ret = lbs_cmd_802_11_key_material(priv, CMD_ACT_SET, assoc_req);
1007 assoc_req->flags = flags;
1008 }
1009
1010 out:
1011 lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
1012 return ret;
1013 }
1014
1015
1016 static int assoc_helper_wpa_ie(struct lbs_private *priv,
1017 struct assoc_request * assoc_req)
1018 {
1019 int ret = 0;
1020
1021 lbs_deb_enter(LBS_DEB_ASSOC);
1022
1023 if (assoc_req->secinfo.WPAenabled || assoc_req->secinfo.WPA2enabled) {
1024 memcpy(&priv->wpa_ie, &assoc_req->wpa_ie, assoc_req->wpa_ie_len);
1025 priv->wpa_ie_len = assoc_req->wpa_ie_len;
1026 } else {
1027 memset(&priv->wpa_ie, 0, MAX_WPA_IE_LEN);
1028 priv->wpa_ie_len = 0;
1029 }
1030
1031 lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
1032 return ret;
1033 }
1034
1035
1036 static int should_deauth_infrastructure(struct lbs_private *priv,
1037 struct assoc_request * assoc_req)
1038 {
1039 int ret = 0;
1040
1041 if (priv->connect_status != LBS_CONNECTED)
1042 return 0;
1043
1044 lbs_deb_enter(LBS_DEB_ASSOC);
1045 if (test_bit(ASSOC_FLAG_SSID, &assoc_req->flags)) {
1046 lbs_deb_assoc("Deauthenticating due to new SSID\n");
1047 ret = 1;
1048 goto out;
1049 }
1050
1051 if (test_bit(ASSOC_FLAG_SECINFO, &assoc_req->flags)) {
1052 if (priv->secinfo.auth_mode != assoc_req->secinfo.auth_mode) {
1053 lbs_deb_assoc("Deauthenticating due to new security\n");
1054 ret = 1;
1055 goto out;
1056 }
1057 }
1058
1059 if (test_bit(ASSOC_FLAG_BSSID, &assoc_req->flags)) {
1060 lbs_deb_assoc("Deauthenticating due to new BSSID\n");
1061 ret = 1;
1062 goto out;
1063 }
1064
1065 if (test_bit(ASSOC_FLAG_CHANNEL, &assoc_req->flags)) {
1066 lbs_deb_assoc("Deauthenticating due to channel switch\n");
1067 ret = 1;
1068 goto out;
1069 }
1070
1071 /* FIXME: deal with 'auto' mode somehow */
1072 if (test_bit(ASSOC_FLAG_MODE, &assoc_req->flags)) {
1073 if (assoc_req->mode != IW_MODE_INFRA) {
1074 lbs_deb_assoc("Deauthenticating due to leaving "
1075 "infra mode\n");
1076 ret = 1;
1077 goto out;
1078 }
1079 }
1080
1081 out:
1082 lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
1083 return ret;
1084 }
1085
1086
1087 static int should_stop_adhoc(struct lbs_private *priv,
1088 struct assoc_request * assoc_req)
1089 {
1090 lbs_deb_enter(LBS_DEB_ASSOC);
1091
1092 if (priv->connect_status != LBS_CONNECTED)
1093 return 0;
1094
1095 if (lbs_ssid_cmp(priv->curbssparams.ssid,
1096 priv->curbssparams.ssid_len,
1097 assoc_req->ssid, assoc_req->ssid_len) != 0)
1098 return 1;
1099
1100 /* FIXME: deal with 'auto' mode somehow */
1101 if (test_bit(ASSOC_FLAG_MODE, &assoc_req->flags)) {
1102 if (assoc_req->mode != IW_MODE_ADHOC)
1103 return 1;
1104 }
1105
1106 if (test_bit(ASSOC_FLAG_CHANNEL, &assoc_req->flags)) {
1107 if (assoc_req->channel != priv->curbssparams.channel)
1108 return 1;
1109 }
1110
1111 lbs_deb_leave(LBS_DEB_ASSOC);
1112 return 0;
1113 }
1114
1115
1116 /**
1117 * @brief This function finds the best SSID in the Scan List
1118 *
1119 * Search the scan table for the best SSID that also matches the current
1120 * adapter network preference (infrastructure or adhoc)
1121 *
1122 * @param priv A pointer to struct lbs_private
1123 *
1124 * @return index in BSSID list
1125 */
1126 static struct bss_descriptor *lbs_find_best_ssid_in_list(
1127 struct lbs_private *priv, uint8_t mode)
1128 {
1129 uint8_t bestrssi = 0;
1130 struct bss_descriptor *iter_bss;
1131 struct bss_descriptor *best_bss = NULL;
1132
1133 lbs_deb_enter(LBS_DEB_SCAN);
1134
1135 mutex_lock(&priv->lock);
1136
1137 list_for_each_entry(iter_bss, &priv->network_list, list) {
1138 switch (mode) {
1139 case IW_MODE_INFRA:
1140 case IW_MODE_ADHOC:
1141 if (!is_network_compatible(priv, iter_bss, mode))
1142 break;
1143 if (SCAN_RSSI(iter_bss->rssi) <= bestrssi)
1144 break;
1145 bestrssi = SCAN_RSSI(iter_bss->rssi);
1146 best_bss = iter_bss;
1147 break;
1148 case IW_MODE_AUTO:
1149 default:
1150 if (SCAN_RSSI(iter_bss->rssi) <= bestrssi)
1151 break;
1152 bestrssi = SCAN_RSSI(iter_bss->rssi);
1153 best_bss = iter_bss;
1154 break;
1155 }
1156 }
1157
1158 mutex_unlock(&priv->lock);
1159 lbs_deb_leave_args(LBS_DEB_SCAN, "best_bss %p", best_bss);
1160 return best_bss;
1161 }
1162
1163 /**
1164 * @brief Find the best AP
1165 *
1166 * Used from association worker.
1167 *
1168 * @param priv A pointer to struct lbs_private structure
1169 * @param pSSID A pointer to AP's ssid
1170 *
1171 * @return 0--success, otherwise--fail
1172 */
1173 static int lbs_find_best_network_ssid(struct lbs_private *priv,
1174 uint8_t *out_ssid, uint8_t *out_ssid_len, uint8_t preferred_mode,
1175 uint8_t *out_mode)
1176 {
1177 int ret = -1;
1178 struct bss_descriptor *found;
1179
1180 lbs_deb_enter(LBS_DEB_SCAN);
1181
1182 priv->scan_ssid_len = 0;
1183 lbs_scan_networks(priv, 1);
1184 if (priv->surpriseremoved)
1185 goto out;
1186
1187 found = lbs_find_best_ssid_in_list(priv, preferred_mode);
1188 if (found && (found->ssid_len > 0)) {
1189 memcpy(out_ssid, &found->ssid, IW_ESSID_MAX_SIZE);
1190 *out_ssid_len = found->ssid_len;
1191 *out_mode = found->mode;
1192 ret = 0;
1193 }
1194
1195 out:
1196 lbs_deb_leave_args(LBS_DEB_SCAN, "ret %d", ret);
1197 return ret;
1198 }
1199
1200
1201 void lbs_association_worker(struct work_struct *work)
1202 {
1203 struct lbs_private *priv = container_of(work, struct lbs_private,
1204 assoc_work.work);
1205 struct assoc_request * assoc_req = NULL;
1206 int ret = 0;
1207 int find_any_ssid = 0;
1208
1209 lbs_deb_enter(LBS_DEB_ASSOC);
1210
1211 mutex_lock(&priv->lock);
1212 assoc_req = priv->pending_assoc_req;
1213 priv->pending_assoc_req = NULL;
1214 priv->in_progress_assoc_req = assoc_req;
1215 mutex_unlock(&priv->lock);
1216
1217 if (!assoc_req)
1218 goto done;
1219
1220 lbs_deb_assoc(
1221 "Association Request:\n"
1222 " flags: 0x%08lx\n"
1223 " SSID: '%s'\n"
1224 " chann: %d\n"
1225 " band: %d\n"
1226 " mode: %d\n"
1227 " BSSID: %pM\n"
1228 " secinfo: %s%s%s\n"
1229 " auth_mode: %d\n",
1230 assoc_req->flags,
1231 escape_essid(assoc_req->ssid, assoc_req->ssid_len),
1232 assoc_req->channel, assoc_req->band, assoc_req->mode,
1233 assoc_req->bssid,
1234 assoc_req->secinfo.WPAenabled ? " WPA" : "",
1235 assoc_req->secinfo.WPA2enabled ? " WPA2" : "",
1236 assoc_req->secinfo.wep_enabled ? " WEP" : "",
1237 assoc_req->secinfo.auth_mode);
1238
1239 /* If 'any' SSID was specified, find an SSID to associate with */
1240 if (test_bit(ASSOC_FLAG_SSID, &assoc_req->flags)
1241 && !assoc_req->ssid_len)
1242 find_any_ssid = 1;
1243
1244 /* But don't use 'any' SSID if there's a valid locked BSSID to use */
1245 if (test_bit(ASSOC_FLAG_BSSID, &assoc_req->flags)) {
1246 if (compare_ether_addr(assoc_req->bssid, bssid_any)
1247 && compare_ether_addr(assoc_req->bssid, bssid_off))
1248 find_any_ssid = 0;
1249 }
1250
1251 if (find_any_ssid) {
1252 u8 new_mode = assoc_req->mode;
1253
1254 ret = lbs_find_best_network_ssid(priv, assoc_req->ssid,
1255 &assoc_req->ssid_len, assoc_req->mode, &new_mode);
1256 if (ret) {
1257 lbs_deb_assoc("Could not find best network\n");
1258 ret = -ENETUNREACH;
1259 goto out;
1260 }
1261
1262 /* Ensure we switch to the mode of the AP */
1263 if (assoc_req->mode == IW_MODE_AUTO) {
1264 set_bit(ASSOC_FLAG_MODE, &assoc_req->flags);
1265 assoc_req->mode = new_mode;
1266 }
1267 }
1268
1269 /*
1270 * Check if the attributes being changing require deauthentication
1271 * from the currently associated infrastructure access point.
1272 */
1273 if (priv->mode == IW_MODE_INFRA) {
1274 if (should_deauth_infrastructure(priv, assoc_req)) {
1275 ret = lbs_cmd_80211_deauthenticate(priv,
1276 priv->curbssparams.bssid,
1277 WLAN_REASON_DEAUTH_LEAVING);
1278 if (ret) {
1279 lbs_deb_assoc("Deauthentication due to new "
1280 "configuration request failed: %d\n",
1281 ret);
1282 }
1283 }
1284 } else if (priv->mode == IW_MODE_ADHOC) {
1285 if (should_stop_adhoc(priv, assoc_req)) {
1286 ret = lbs_adhoc_stop(priv);
1287 if (ret) {
1288 lbs_deb_assoc("Teardown of AdHoc network due to "
1289 "new configuration request failed: %d\n",
1290 ret);
1291 }
1292
1293 }
1294 }
1295
1296 /* Send the various configuration bits to the firmware */
1297 if (test_bit(ASSOC_FLAG_MODE, &assoc_req->flags)) {
1298 ret = assoc_helper_mode(priv, assoc_req);
1299 if (ret)
1300 goto out;
1301 }
1302
1303 if (test_bit(ASSOC_FLAG_CHANNEL, &assoc_req->flags)) {
1304 ret = assoc_helper_channel(priv, assoc_req);
1305 if (ret)
1306 goto out;
1307 }
1308
1309 if ( test_bit(ASSOC_FLAG_WEP_KEYS, &assoc_req->flags)
1310 || test_bit(ASSOC_FLAG_WEP_TX_KEYIDX, &assoc_req->flags)) {
1311 ret = assoc_helper_wep_keys(priv, assoc_req);
1312 if (ret)
1313 goto out;
1314 }
1315
1316 if (test_bit(ASSOC_FLAG_SECINFO, &assoc_req->flags)) {
1317 ret = assoc_helper_secinfo(priv, assoc_req);
1318 if (ret)
1319 goto out;
1320 }
1321
1322 if (test_bit(ASSOC_FLAG_WPA_IE, &assoc_req->flags)) {
1323 ret = assoc_helper_wpa_ie(priv, assoc_req);
1324 if (ret)
1325 goto out;
1326 }
1327
1328 if (test_bit(ASSOC_FLAG_WPA_MCAST_KEY, &assoc_req->flags)
1329 || test_bit(ASSOC_FLAG_WPA_UCAST_KEY, &assoc_req->flags)) {
1330 ret = assoc_helper_wpa_keys(priv, assoc_req);
1331 if (ret)
1332 goto out;
1333 }
1334
1335 /* SSID/BSSID should be the _last_ config option set, because they
1336 * trigger the association attempt.
1337 */
1338 if (test_bit(ASSOC_FLAG_BSSID, &assoc_req->flags)
1339 || test_bit(ASSOC_FLAG_SSID, &assoc_req->flags)) {
1340 int success = 1;
1341
1342 ret = assoc_helper_associate(priv, assoc_req);
1343 if (ret) {
1344 lbs_deb_assoc("ASSOC: association unsuccessful: %d\n",
1345 ret);
1346 success = 0;
1347 }
1348
1349 if (priv->connect_status != LBS_CONNECTED) {
1350 lbs_deb_assoc("ASSOC: association unsuccessful, "
1351 "not connected\n");
1352 success = 0;
1353 }
1354
1355 if (success) {
1356 lbs_deb_assoc("associated to %pM\n",
1357 priv->curbssparams.bssid);
1358 lbs_prepare_and_send_command(priv,
1359 CMD_802_11_RSSI,
1360 0, CMD_OPTION_WAITFORRSP, 0, NULL);
1361 } else {
1362 ret = -1;
1363 }
1364 }
1365
1366 out:
1367 if (ret) {
1368 lbs_deb_assoc("ASSOC: reconfiguration attempt unsuccessful: %d\n",
1369 ret);
1370 }
1371
1372 mutex_lock(&priv->lock);
1373 priv->in_progress_assoc_req = NULL;
1374 mutex_unlock(&priv->lock);
1375 kfree(assoc_req);
1376
1377 done:
1378 lbs_deb_leave(LBS_DEB_ASSOC);
1379 }
1380
1381
1382 /*
1383 * Caller MUST hold any necessary locks
1384 */
1385 struct assoc_request *lbs_get_association_request(struct lbs_private *priv)
1386 {
1387 struct assoc_request * assoc_req;
1388
1389 lbs_deb_enter(LBS_DEB_ASSOC);
1390 if (!priv->pending_assoc_req) {
1391 priv->pending_assoc_req = kzalloc(sizeof(struct assoc_request),
1392 GFP_KERNEL);
1393 if (!priv->pending_assoc_req) {
1394 lbs_pr_info("Not enough memory to allocate association"
1395 " request!\n");
1396 return NULL;
1397 }
1398 }
1399
1400 /* Copy current configuration attributes to the association request,
1401 * but don't overwrite any that are already set.
1402 */
1403 assoc_req = priv->pending_assoc_req;
1404 if (!test_bit(ASSOC_FLAG_SSID, &assoc_req->flags)) {
1405 memcpy(&assoc_req->ssid, &priv->curbssparams.ssid,
1406 IW_ESSID_MAX_SIZE);
1407 assoc_req->ssid_len = priv->curbssparams.ssid_len;
1408 }
1409
1410 if (!test_bit(ASSOC_FLAG_CHANNEL, &assoc_req->flags))
1411 assoc_req->channel = priv->curbssparams.channel;
1412
1413 if (!test_bit(ASSOC_FLAG_BAND, &assoc_req->flags))
1414 assoc_req->band = priv->curbssparams.band;
1415
1416 if (!test_bit(ASSOC_FLAG_MODE, &assoc_req->flags))
1417 assoc_req->mode = priv->mode;
1418
1419 if (!test_bit(ASSOC_FLAG_BSSID, &assoc_req->flags)) {
1420 memcpy(&assoc_req->bssid, priv->curbssparams.bssid,
1421 ETH_ALEN);
1422 }
1423
1424 if (!test_bit(ASSOC_FLAG_WEP_KEYS, &assoc_req->flags)) {
1425 int i;
1426 for (i = 0; i < 4; i++) {
1427 memcpy(&assoc_req->wep_keys[i], &priv->wep_keys[i],
1428 sizeof(struct enc_key));
1429 }
1430 }
1431
1432 if (!test_bit(ASSOC_FLAG_WEP_TX_KEYIDX, &assoc_req->flags))
1433 assoc_req->wep_tx_keyidx = priv->wep_tx_keyidx;
1434
1435 if (!test_bit(ASSOC_FLAG_WPA_MCAST_KEY, &assoc_req->flags)) {
1436 memcpy(&assoc_req->wpa_mcast_key, &priv->wpa_mcast_key,
1437 sizeof(struct enc_key));
1438 }
1439
1440 if (!test_bit(ASSOC_FLAG_WPA_UCAST_KEY, &assoc_req->flags)) {
1441 memcpy(&assoc_req->wpa_unicast_key, &priv->wpa_unicast_key,
1442 sizeof(struct enc_key));
1443 }
1444
1445 if (!test_bit(ASSOC_FLAG_SECINFO, &assoc_req->flags)) {
1446 memcpy(&assoc_req->secinfo, &priv->secinfo,
1447 sizeof(struct lbs_802_11_security));
1448 }
1449
1450 if (!test_bit(ASSOC_FLAG_WPA_IE, &assoc_req->flags)) {
1451 memcpy(&assoc_req->wpa_ie, &priv->wpa_ie,
1452 MAX_WPA_IE_LEN);
1453 assoc_req->wpa_ie_len = priv->wpa_ie_len;
1454 }
1455
1456 lbs_deb_leave(LBS_DEB_ASSOC);
1457 return assoc_req;
1458 }
1459
1460
1461 /**
1462 * @brief This function prepares command of authenticate.
1463 *
1464 * @param priv A pointer to struct lbs_private structure
1465 * @param cmd A pointer to cmd_ds_command structure
1466 * @param pdata_buf Void cast of pointer to a BSSID to authenticate with
1467 *
1468 * @return 0 or -1
1469 */
1470 int lbs_cmd_80211_authenticate(struct lbs_private *priv,
1471 struct cmd_ds_command *cmd,
1472 void *pdata_buf)
1473 {
1474 struct cmd_ds_802_11_authenticate *pauthenticate = &cmd->params.auth;
1475 int ret = -1;
1476 u8 *bssid = pdata_buf;
1477
1478 lbs_deb_enter(LBS_DEB_JOIN);
1479
1480 cmd->command = cpu_to_le16(CMD_802_11_AUTHENTICATE);
1481 cmd->size = cpu_to_le16(sizeof(struct cmd_ds_802_11_authenticate)
1482 + S_DS_GEN);
1483
1484 /* translate auth mode to 802.11 defined wire value */
1485 switch (priv->secinfo.auth_mode) {
1486 case IW_AUTH_ALG_OPEN_SYSTEM:
1487 pauthenticate->authtype = 0x00;
1488 break;
1489 case IW_AUTH_ALG_SHARED_KEY:
1490 pauthenticate->authtype = 0x01;
1491 break;
1492 case IW_AUTH_ALG_LEAP:
1493 pauthenticate->authtype = 0x80;
1494 break;
1495 default:
1496 lbs_deb_join("AUTH_CMD: invalid auth alg 0x%X\n",
1497 priv->secinfo.auth_mode);
1498 goto out;
1499 }
1500
1501 memcpy(pauthenticate->macaddr, bssid, ETH_ALEN);
1502
1503 lbs_deb_join("AUTH_CMD: BSSID %pM, auth 0x%x\n",
1504 bssid, pauthenticate->authtype);
1505 ret = 0;
1506
1507 out:
1508 lbs_deb_leave_args(LBS_DEB_JOIN, "ret %d", ret);
1509 return ret;
1510 }
1511
1512 /**
1513 * @brief Deauthenticate from a specific BSS
1514 *
1515 * @param priv A pointer to struct lbs_private structure
1516 * @param bssid The specific BSS to deauthenticate from
1517 * @param reason The 802.11 sec. 7.3.1.7 Reason Code for deauthenticating
1518 *
1519 * @return 0 on success, error on failure
1520 */
1521 int lbs_cmd_80211_deauthenticate(struct lbs_private *priv, u8 bssid[ETH_ALEN],
1522 u16 reason)
1523 {
1524 struct cmd_ds_802_11_deauthenticate cmd;
1525 int ret;
1526
1527 lbs_deb_enter(LBS_DEB_JOIN);
1528
1529 memset(&cmd, 0, sizeof(cmd));
1530 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1531 memcpy(cmd.macaddr, &bssid[0], ETH_ALEN);
1532 cmd.reasoncode = cpu_to_le16(reason);
1533
1534 ret = lbs_cmd_with_response(priv, CMD_802_11_DEAUTHENTICATE, &cmd);
1535
1536 /* Clean up everything even if there was an error; can't assume that
1537 * we're still authenticated to the AP after trying to deauth.
1538 */
1539 lbs_mac_event_disconnected(priv);
1540
1541 lbs_deb_leave(LBS_DEB_JOIN);
1542 return ret;
1543 }
1544
1545 int lbs_cmd_80211_associate(struct lbs_private *priv,
1546 struct cmd_ds_command *cmd, void *pdata_buf)
1547 {
1548 struct cmd_ds_802_11_associate *passo = &cmd->params.associate;
1549 int ret = 0;
1550 struct assoc_request *assoc_req = pdata_buf;
1551 struct bss_descriptor *bss = &assoc_req->bss;
1552 u8 *pos;
1553 u16 tmpcap, tmplen;
1554 struct mrvlietypes_ssidparamset *ssid;
1555 struct mrvlietypes_phyparamset *phy;
1556 struct mrvlietypes_ssparamset *ss;
1557 struct mrvlietypes_ratesparamset *rates;
1558 struct mrvlietypes_rsnparamset *rsn;
1559
1560 lbs_deb_enter(LBS_DEB_ASSOC);
1561
1562 pos = (u8 *) passo;
1563
1564 if (!priv) {
1565 ret = -1;
1566 goto done;
1567 }
1568
1569 cmd->command = cpu_to_le16(CMD_802_11_ASSOCIATE);
1570
1571 memcpy(passo->peerstaaddr, bss->bssid, sizeof(passo->peerstaaddr));
1572 pos += sizeof(passo->peerstaaddr);
1573
1574 /* set the listen interval */
1575 passo->listeninterval = cpu_to_le16(MRVDRV_DEFAULT_LISTEN_INTERVAL);
1576
1577 pos += sizeof(passo->capability);
1578 pos += sizeof(passo->listeninterval);
1579 pos += sizeof(passo->bcnperiod);
1580 pos += sizeof(passo->dtimperiod);
1581
1582 ssid = (struct mrvlietypes_ssidparamset *) pos;
1583 ssid->header.type = cpu_to_le16(TLV_TYPE_SSID);
1584 tmplen = bss->ssid_len;
1585 ssid->header.len = cpu_to_le16(tmplen);
1586 memcpy(ssid->ssid, bss->ssid, tmplen);
1587 pos += sizeof(ssid->header) + tmplen;
1588
1589 phy = (struct mrvlietypes_phyparamset *) pos;
1590 phy->header.type = cpu_to_le16(TLV_TYPE_PHY_DS);
1591 tmplen = sizeof(phy->fh_ds.dsparamset);
1592 phy->header.len = cpu_to_le16(tmplen);
1593 memcpy(&phy->fh_ds.dsparamset,
1594 &bss->phyparamset.dsparamset.currentchan,
1595 tmplen);
1596 pos += sizeof(phy->header) + tmplen;
1597
1598 ss = (struct mrvlietypes_ssparamset *) pos;
1599 ss->header.type = cpu_to_le16(TLV_TYPE_CF);
1600 tmplen = sizeof(ss->cf_ibss.cfparamset);
1601 ss->header.len = cpu_to_le16(tmplen);
1602 pos += sizeof(ss->header) + tmplen;
1603
1604 rates = (struct mrvlietypes_ratesparamset *) pos;
1605 rates->header.type = cpu_to_le16(TLV_TYPE_RATES);
1606 memcpy(&rates->rates, &bss->rates, MAX_RATES);
1607 tmplen = MAX_RATES;
1608 if (get_common_rates(priv, rates->rates, &tmplen)) {
1609 ret = -1;
1610 goto done;
1611 }
1612 pos += sizeof(rates->header) + tmplen;
1613 rates->header.len = cpu_to_le16(tmplen);
1614 lbs_deb_assoc("ASSOC_CMD: num rates %u\n", tmplen);
1615
1616 /* Copy the infra. association rates into Current BSS state structure */
1617 memset(&priv->curbssparams.rates, 0, sizeof(priv->curbssparams.rates));
1618 memcpy(&priv->curbssparams.rates, &rates->rates, tmplen);
1619
1620 /* Set MSB on basic rates as the firmware requires, but _after_
1621 * copying to current bss rates.
1622 */
1623 lbs_set_basic_rate_flags(rates->rates, tmplen);
1624
1625 if (assoc_req->secinfo.WPAenabled || assoc_req->secinfo.WPA2enabled) {
1626 rsn = (struct mrvlietypes_rsnparamset *) pos;
1627 /* WPA_IE or WPA2_IE */
1628 rsn->header.type = cpu_to_le16((u16) assoc_req->wpa_ie[0]);
1629 tmplen = (u16) assoc_req->wpa_ie[1];
1630 rsn->header.len = cpu_to_le16(tmplen);
1631 memcpy(rsn->rsnie, &assoc_req->wpa_ie[2], tmplen);
1632 lbs_deb_hex(LBS_DEB_JOIN, "ASSOC_CMD: RSN IE", (u8 *) rsn,
1633 sizeof(rsn->header) + tmplen);
1634 pos += sizeof(rsn->header) + tmplen;
1635 }
1636
1637 /* update curbssparams */
1638 priv->curbssparams.channel = bss->phyparamset.dsparamset.currentchan;
1639
1640 if (lbs_parse_dnld_countryinfo_11d(priv, bss)) {
1641 ret = -1;
1642 goto done;
1643 }
1644
1645 cmd->size = cpu_to_le16((u16) (pos - (u8 *) passo) + S_DS_GEN);
1646
1647 /* set the capability info */
1648 tmpcap = (bss->capability & CAPINFO_MASK);
1649 if (bss->mode == IW_MODE_INFRA)
1650 tmpcap |= WLAN_CAPABILITY_ESS;
1651 passo->capability = cpu_to_le16(tmpcap);
1652 lbs_deb_assoc("ASSOC_CMD: capability 0x%04x\n", tmpcap);
1653
1654 done:
1655 lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
1656 return ret;
1657 }
1658
1659 int lbs_ret_80211_associate(struct lbs_private *priv,
1660 struct cmd_ds_command *resp)
1661 {
1662 int ret = 0;
1663 union iwreq_data wrqu;
1664 struct ieeetypes_assocrsp *passocrsp;
1665 struct bss_descriptor *bss;
1666 u16 status_code;
1667
1668 lbs_deb_enter(LBS_DEB_ASSOC);
1669
1670 if (!priv->in_progress_assoc_req) {
1671 lbs_deb_assoc("ASSOC_RESP: no in-progress assoc request\n");
1672 ret = -1;
1673 goto done;
1674 }
1675 bss = &priv->in_progress_assoc_req->bss;
1676
1677 passocrsp = (struct ieeetypes_assocrsp *) &resp->params;
1678
1679 /*
1680 * Older FW versions map the IEEE 802.11 Status Code in the association
1681 * response to the following values returned in passocrsp->statuscode:
1682 *
1683 * IEEE Status Code Marvell Status Code
1684 * 0 -> 0x0000 ASSOC_RESULT_SUCCESS
1685 * 13 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED
1686 * 14 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED
1687 * 15 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED
1688 * 16 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED
1689 * others -> 0x0003 ASSOC_RESULT_REFUSED
1690 *
1691 * Other response codes:
1692 * 0x0001 -> ASSOC_RESULT_INVALID_PARAMETERS (unused)
1693 * 0x0002 -> ASSOC_RESULT_TIMEOUT (internal timer expired waiting for
1694 * association response from the AP)
1695 */
1696
1697 status_code = le16_to_cpu(passocrsp->statuscode);
1698 switch (status_code) {
1699 case 0x00:
1700 break;
1701 case 0x01:
1702 lbs_deb_assoc("ASSOC_RESP: invalid parameters\n");
1703 break;
1704 case 0x02:
1705 lbs_deb_assoc("ASSOC_RESP: internal timer "
1706 "expired while waiting for the AP\n");
1707 break;
1708 case 0x03:
1709 lbs_deb_assoc("ASSOC_RESP: association "
1710 "refused by AP\n");
1711 break;
1712 case 0x04:
1713 lbs_deb_assoc("ASSOC_RESP: authentication "
1714 "refused by AP\n");
1715 break;
1716 default:
1717 lbs_deb_assoc("ASSOC_RESP: failure reason 0x%02x "
1718 " unknown\n", status_code);
1719 break;
1720 }
1721
1722 if (status_code) {
1723 lbs_mac_event_disconnected(priv);
1724 ret = -1;
1725 goto done;
1726 }
1727
1728 lbs_deb_hex(LBS_DEB_ASSOC, "ASSOC_RESP", (void *)&resp->params,
1729 le16_to_cpu(resp->size) - S_DS_GEN);
1730
1731 /* Send a Media Connected event, according to the Spec */
1732 priv->connect_status = LBS_CONNECTED;
1733
1734 /* Update current SSID and BSSID */
1735 memcpy(&priv->curbssparams.ssid, &bss->ssid, IW_ESSID_MAX_SIZE);
1736 priv->curbssparams.ssid_len = bss->ssid_len;
1737 memcpy(priv->curbssparams.bssid, bss->bssid, ETH_ALEN);
1738
1739 priv->SNR[TYPE_RXPD][TYPE_AVG] = 0;
1740 priv->NF[TYPE_RXPD][TYPE_AVG] = 0;
1741
1742 memset(priv->rawSNR, 0x00, sizeof(priv->rawSNR));
1743 memset(priv->rawNF, 0x00, sizeof(priv->rawNF));
1744 priv->nextSNRNF = 0;
1745 priv->numSNRNF = 0;
1746
1747 netif_carrier_on(priv->dev);
1748 if (!priv->tx_pending_len)
1749 netif_wake_queue(priv->dev);
1750
1751 memcpy(wrqu.ap_addr.sa_data, priv->curbssparams.bssid, ETH_ALEN);
1752 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
1753 wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
1754
1755 done:
1756 lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
1757 return ret;
1758 }
1759
1760 static int lbs_adhoc_post(struct lbs_private *priv, struct cmd_header *resp)
1761 {
1762 int ret = 0;
1763 u16 command = le16_to_cpu(resp->command);
1764 u16 result = le16_to_cpu(resp->result);
1765 struct cmd_ds_802_11_ad_hoc_result *adhoc_resp;
1766 union iwreq_data wrqu;
1767 struct bss_descriptor *bss;
1768
1769 lbs_deb_enter(LBS_DEB_JOIN);
1770
1771 adhoc_resp = (struct cmd_ds_802_11_ad_hoc_result *) resp;
1772
1773 if (!priv->in_progress_assoc_req) {
1774 lbs_deb_join("ADHOC_RESP: no in-progress association "
1775 "request\n");
1776 ret = -1;
1777 goto done;
1778 }
1779 bss = &priv->in_progress_assoc_req->bss;
1780
1781 /*
1782 * Join result code 0 --> SUCCESS
1783 */
1784 if (result) {
1785 lbs_deb_join("ADHOC_RESP: failed (result 0x%X)\n", result);
1786 if (priv->connect_status == LBS_CONNECTED)
1787 lbs_mac_event_disconnected(priv);
1788 ret = -1;
1789 goto done;
1790 }
1791
1792 /* Send a Media Connected event, according to the Spec */
1793 priv->connect_status = LBS_CONNECTED;
1794
1795 if (command == CMD_RET(CMD_802_11_AD_HOC_START)) {
1796 /* Update the created network descriptor with the new BSSID */
1797 memcpy(bss->bssid, adhoc_resp->bssid, ETH_ALEN);
1798 }
1799
1800 /* Set the BSSID from the joined/started descriptor */
1801 memcpy(&priv->curbssparams.bssid, bss->bssid, ETH_ALEN);
1802
1803 /* Set the new SSID to current SSID */
1804 memcpy(&priv->curbssparams.ssid, &bss->ssid, IW_ESSID_MAX_SIZE);
1805 priv->curbssparams.ssid_len = bss->ssid_len;
1806
1807 netif_carrier_on(priv->dev);
1808 if (!priv->tx_pending_len)
1809 netif_wake_queue(priv->dev);
1810
1811 memset(&wrqu, 0, sizeof(wrqu));
1812 memcpy(wrqu.ap_addr.sa_data, priv->curbssparams.bssid, ETH_ALEN);
1813 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
1814 wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
1815
1816 lbs_deb_join("ADHOC_RESP: Joined/started '%s', BSSID %pM, channel %d\n",
1817 escape_essid(bss->ssid, bss->ssid_len),
1818 priv->curbssparams.bssid,
1819 priv->curbssparams.channel);
1820
1821 done:
1822 lbs_deb_leave_args(LBS_DEB_JOIN, "ret %d", ret);
1823 return ret;
1824 }
1825
Linux kernel - Deliverables
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