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added 2.6.29.6 aldebaran kernel
[nao-ulib.git] / kernel / 2.6.29.6-aldebaran-rt / drivers / net / wireless / libertas / assoc.c
bloba0e440cd8967ec55c53ae17b948d678d6c5b7959
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 int lbs_adhoc_post(struct lbs_private *priv, struct cmd_header *resp);
16
17 static const u8 bssid_any[ETH_ALEN] __attribute__ ((aligned (2))) =
18 { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
19 static const u8 bssid_off[ETH_ALEN] __attribute__ ((aligned (2))) =
20 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
21
22 /* The firmware needs certain bits masked out of the beacon-derviced capability
23 * field when associating/joining to BSSs.
24 */
25 #define CAPINFO_MASK (~(0xda00))
26
27
28 /**
29 * @brief This function finds common rates between rates and card rates.
30 *
31 * It will fill common rates in rates as output if found.
32 *
33 * NOTE: Setting the MSB of the basic rates need to be taken
34 * care, either before or after calling this function
35 *
36 * @param priv A pointer to struct lbs_private structure
37 * @param rates the buffer which keeps input and output
38 * @param rates_size the size of rate1 buffer; new size of buffer on return
39 *
40 * @return 0 on success, or -1 on error
41 */
42 static int get_common_rates(struct lbs_private *priv,
43 u8 *rates,
44 u16 *rates_size)
45 {
46 u8 *card_rates = lbs_bg_rates;
47 size_t num_card_rates = sizeof(lbs_bg_rates);
48 int ret = 0, i, j;
49 u8 tmp[30];
50 size_t tmp_size = 0;
51
52 /* For each rate in card_rates that exists in rate1, copy to tmp */
53 for (i = 0; card_rates[i] && (i < num_card_rates); i++) {
54 for (j = 0; rates[j] && (j < *rates_size); j++) {
55 if (rates[j] == card_rates[i])
56 tmp[tmp_size++] = card_rates[i];
57 }
58 }
59
60 lbs_deb_hex(LBS_DEB_JOIN, "AP rates ", rates, *rates_size);
61 lbs_deb_hex(LBS_DEB_JOIN, "card rates ", card_rates, num_card_rates);
62 lbs_deb_hex(LBS_DEB_JOIN, "common rates", tmp, tmp_size);
63 lbs_deb_join("TX data rate 0x%02x\n", priv->cur_rate);
64
65 if (!priv->enablehwauto) {
66 for (i = 0; i < tmp_size; i++) {
67 if (tmp[i] == priv->cur_rate)
68 goto done;
69 }
70 lbs_pr_alert("Previously set fixed data rate %#x isn't "
71 "compatible with the network.\n", priv->cur_rate);
72 ret = -1;
73 goto done;
74 }
75 ret = 0;
76
77 done:
78 memset(rates, 0, *rates_size);
79 *rates_size = min_t(int, tmp_size, *rates_size);
80 memcpy(rates, tmp, *rates_size);
81 return ret;
82 }
83
84
85 /**
86 * @brief Sets the MSB on basic rates as the firmware requires
87 *
88 * Scan through an array and set the MSB for basic data rates.
89 *
90 * @param rates buffer of data rates
91 * @param len size of buffer
92 */
93 static void lbs_set_basic_rate_flags(u8 *rates, size_t len)
94 {
95 int i;
96
97 for (i = 0; i < len; i++) {
98 if (rates[i] == 0x02 || rates[i] == 0x04 ||
99 rates[i] == 0x0b || rates[i] == 0x16)
100 rates[i] |= 0x80;
101 }
102 }
103
104
105 /**
106 * @brief Associate to a specific BSS discovered in a scan
107 *
108 * @param priv A pointer to struct lbs_private structure
109 * @param assoc_req The association request describing the BSS to associate with
110 *
111 * @return 0-success, otherwise fail
112 */
113 static int lbs_associate(struct lbs_private *priv,
114 struct assoc_request *assoc_req)
115 {
116 int ret;
117 u8 preamble = RADIO_PREAMBLE_LONG;
118
119 lbs_deb_enter(LBS_DEB_ASSOC);
120
121 ret = lbs_prepare_and_send_command(priv, CMD_802_11_AUTHENTICATE,
122 0, CMD_OPTION_WAITFORRSP,
123 0, assoc_req->bss.bssid);
124 if (ret)
125 goto out;
126
127 /* Use short preamble only when both the BSS and firmware support it */
128 if ((priv->capability & WLAN_CAPABILITY_SHORT_PREAMBLE) &&
129 (assoc_req->bss.capability & WLAN_CAPABILITY_SHORT_PREAMBLE))
130 preamble = RADIO_PREAMBLE_SHORT;
131
132 ret = lbs_set_radio(priv, preamble, 1);
133 if (ret)
134 goto out;
135
136 ret = lbs_prepare_and_send_command(priv, CMD_802_11_ASSOCIATE,
137 0, CMD_OPTION_WAITFORRSP, 0, assoc_req);
138
139 out:
140 lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
141 return ret;
142 }
143
144 /**
145 * @brief Join an adhoc network found in a previous scan
146 *
147 * @param priv A pointer to struct lbs_private structure
148 * @param assoc_req The association request describing the BSS to join
149 *
150 * @return 0 on success, error on failure
151 */
152 static int lbs_adhoc_join(struct lbs_private *priv,
153 struct assoc_request *assoc_req)
154 {
155 struct cmd_ds_802_11_ad_hoc_join cmd;
156 struct bss_descriptor *bss = &assoc_req->bss;
157 u8 preamble = RADIO_PREAMBLE_LONG;
158 DECLARE_SSID_BUF(ssid);
159 u16 ratesize = 0;
160 int ret = 0;
161
162 lbs_deb_enter(LBS_DEB_ASSOC);
163
164 lbs_deb_join("current SSID '%s', ssid length %u\n",
165 print_ssid(ssid, priv->curbssparams.ssid,
166 priv->curbssparams.ssid_len),
167 priv->curbssparams.ssid_len);
168 lbs_deb_join("requested ssid '%s', ssid length %u\n",
169 print_ssid(ssid, bss->ssid, bss->ssid_len),
170 bss->ssid_len);
171
172 /* check if the requested SSID is already joined */
173 if (priv->curbssparams.ssid_len &&
174 !lbs_ssid_cmp(priv->curbssparams.ssid,
175 priv->curbssparams.ssid_len,
176 bss->ssid, bss->ssid_len) &&
177 (priv->mode == IW_MODE_ADHOC) &&
178 (priv->connect_status == LBS_CONNECTED)) {
179 union iwreq_data wrqu;
180
181 lbs_deb_join("ADHOC_J_CMD: New ad-hoc SSID is the same as "
182 "current, not attempting to re-join");
183
184 /* Send the re-association event though, because the association
185 * request really was successful, even if just a null-op.
186 */
187 memset(&wrqu, 0, sizeof(wrqu));
188 memcpy(wrqu.ap_addr.sa_data, priv->curbssparams.bssid,
189 ETH_ALEN);
190 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
191 wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
192 goto out;
193 }
194
195 /* Use short preamble only when both the BSS and firmware support it */
196 if ((priv->capability & WLAN_CAPABILITY_SHORT_PREAMBLE) &&
197 (bss->capability & WLAN_CAPABILITY_SHORT_PREAMBLE)) {
198 lbs_deb_join("AdhocJoin: Short preamble\n");
199 preamble = RADIO_PREAMBLE_SHORT;
200 }
201
202 ret = lbs_set_radio(priv, preamble, 1);
203 if (ret)
204 goto out;
205
206 lbs_deb_join("AdhocJoin: channel = %d\n", assoc_req->channel);
207 lbs_deb_join("AdhocJoin: band = %c\n", assoc_req->band);
208
209 priv->adhoccreate = 0;
210 priv->curbssparams.channel = bss->channel;
211
212 /* Build the join command */
213 memset(&cmd, 0, sizeof(cmd));
214 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
215
216 cmd.bss.type = CMD_BSS_TYPE_IBSS;
217 cmd.bss.beaconperiod = cpu_to_le16(bss->beaconperiod);
218
219 memcpy(&cmd.bss.bssid, &bss->bssid, ETH_ALEN);
220 memcpy(&cmd.bss.ssid, &bss->ssid, bss->ssid_len);
221
222 memcpy(&cmd.bss.phyparamset, &bss->phyparamset,
223 sizeof(union ieeetypes_phyparamset));
224
225 memcpy(&cmd.bss.ssparamset, &bss->ssparamset,
226 sizeof(union IEEEtypes_ssparamset));
227
228 cmd.bss.capability = cpu_to_le16(bss->capability & CAPINFO_MASK);
229 lbs_deb_join("ADHOC_J_CMD: tmpcap=%4X CAPINFO_MASK=%4X\n",
230 bss->capability, CAPINFO_MASK);
231
232 /* information on BSSID descriptor passed to FW */
233 lbs_deb_join("ADHOC_J_CMD: BSSID = %pM, SSID = '%s'\n",
234 cmd.bss.bssid, cmd.bss.ssid);
235
236 /* Only v8 and below support setting these */
237 if (priv->fwrelease < 0x09000000) {
238 /* failtimeout */
239 cmd.failtimeout = cpu_to_le16(MRVDRV_ASSOCIATION_TIME_OUT);
240 /* probedelay */
241 cmd.probedelay = cpu_to_le16(CMD_SCAN_PROBE_DELAY_TIME);
242 }
243
244 /* Copy Data rates from the rates recorded in scan response */
245 memset(cmd.bss.rates, 0, sizeof(cmd.bss.rates));
246 ratesize = min_t(u16, sizeof(cmd.bss.rates), MAX_RATES);
247 memcpy(cmd.bss.rates, bss->rates, ratesize);
248 if (get_common_rates(priv, cmd.bss.rates, &ratesize)) {
249 lbs_deb_join("ADHOC_JOIN: get_common_rates returned error.\n");
250 ret = -1;
251 goto out;
252 }
253
254 /* Copy the ad-hoc creation rates into Current BSS state structure */
255 memset(&priv->curbssparams.rates, 0, sizeof(priv->curbssparams.rates));
256 memcpy(&priv->curbssparams.rates, cmd.bss.rates, ratesize);
257
258 /* Set MSB on basic rates as the firmware requires, but _after_
259 * copying to current bss rates.
260 */
261 lbs_set_basic_rate_flags(cmd.bss.rates, ratesize);
262
263 cmd.bss.ssparamset.ibssparamset.atimwindow = cpu_to_le16(bss->atimwindow);
264
265 if (assoc_req->secinfo.wep_enabled) {
266 u16 tmp = le16_to_cpu(cmd.bss.capability);
267 tmp |= WLAN_CAPABILITY_PRIVACY;
268 cmd.bss.capability = cpu_to_le16(tmp);
269 }
270
271 if (priv->psmode == LBS802_11POWERMODEMAX_PSP) {
272 __le32 local_ps_mode = cpu_to_le32(LBS802_11POWERMODECAM);
273
274 /* wake up first */
275 ret = lbs_prepare_and_send_command(priv, CMD_802_11_PS_MODE,
276 CMD_ACT_SET, 0, 0,
277 &local_ps_mode);
278 if (ret) {
279 ret = -1;
280 goto out;
281 }
282 }
283
284 if (lbs_parse_dnld_countryinfo_11d(priv, bss)) {
285 ret = -1;
286 goto out;
287 }
288
289 ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_JOIN, &cmd);
290 if (ret == 0)
291 ret = lbs_adhoc_post(priv, (struct cmd_header *) &cmd);
292
293 out:
294 lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
295 return ret;
296 }
297
298 /**
299 * @brief Start an Adhoc Network
300 *
301 * @param priv A pointer to struct lbs_private structure
302 * @param assoc_req The association request describing the BSS to start
303 *
304 * @return 0 on success, error on failure
305 */
306 static int lbs_adhoc_start(struct lbs_private *priv,
307 struct assoc_request *assoc_req)
308 {
309 struct cmd_ds_802_11_ad_hoc_start cmd;
310 u8 preamble = RADIO_PREAMBLE_LONG;
311 size_t ratesize = 0;
312 u16 tmpcap = 0;
313 int ret = 0;
314 DECLARE_SSID_BUF(ssid);
315
316 lbs_deb_enter(LBS_DEB_ASSOC);
317
318 if (priv->capability & WLAN_CAPABILITY_SHORT_PREAMBLE) {
319 lbs_deb_join("ADHOC_START: Will use short preamble\n");
320 preamble = RADIO_PREAMBLE_SHORT;
321 }
322
323 ret = lbs_set_radio(priv, preamble, 1);
324 if (ret)
325 goto out;
326
327 /* Build the start command */
328 memset(&cmd, 0, sizeof(cmd));
329 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
330
331 memcpy(cmd.ssid, assoc_req->ssid, assoc_req->ssid_len);
332
333 lbs_deb_join("ADHOC_START: SSID '%s', ssid length %u\n",
334 print_ssid(ssid, assoc_req->ssid, assoc_req->ssid_len),
335 assoc_req->ssid_len);
336
337 cmd.bsstype = CMD_BSS_TYPE_IBSS;
338
339 if (priv->beacon_period == 0)
340 priv->beacon_period = MRVDRV_BEACON_INTERVAL;
341 cmd.beaconperiod = cpu_to_le16(priv->beacon_period);
342
343 WARN_ON(!assoc_req->channel);
344
345 /* set Physical parameter set */
346 cmd.phyparamset.dsparamset.elementid = WLAN_EID_DS_PARAMS;
347 cmd.phyparamset.dsparamset.len = 1;
348 cmd.phyparamset.dsparamset.currentchan = assoc_req->channel;
349
350 /* set IBSS parameter set */
351 cmd.ssparamset.ibssparamset.elementid = WLAN_EID_IBSS_PARAMS;
352 cmd.ssparamset.ibssparamset.len = 2;
353 cmd.ssparamset.ibssparamset.atimwindow = 0;
354
355 /* set capability info */
356 tmpcap = WLAN_CAPABILITY_IBSS;
357 if (assoc_req->secinfo.wep_enabled) {
358 lbs_deb_join("ADHOC_START: WEP enabled, setting privacy on\n");
359 tmpcap |= WLAN_CAPABILITY_PRIVACY;
360 } else
361 lbs_deb_join("ADHOC_START: WEP disabled, setting privacy off\n");
362
363 cmd.capability = cpu_to_le16(tmpcap);
364
365 /* Only v8 and below support setting probe delay */
366 if (priv->fwrelease < 0x09000000)
367 cmd.probedelay = cpu_to_le16(CMD_SCAN_PROBE_DELAY_TIME);
368
369 ratesize = min(sizeof(cmd.rates), sizeof(lbs_bg_rates));
370 memcpy(cmd.rates, lbs_bg_rates, ratesize);
371
372 /* Copy the ad-hoc creating rates into Current BSS state structure */
373 memset(&priv->curbssparams.rates, 0, sizeof(priv->curbssparams.rates));
374 memcpy(&priv->curbssparams.rates, &cmd.rates, ratesize);
375
376 /* Set MSB on basic rates as the firmware requires, but _after_
377 * copying to current bss rates.
378 */
379 lbs_set_basic_rate_flags(cmd.rates, ratesize);
380
381 lbs_deb_join("ADHOC_START: rates=%02x %02x %02x %02x\n",
382 cmd.rates[0], cmd.rates[1], cmd.rates[2], cmd.rates[3]);
383
384 if (lbs_create_dnld_countryinfo_11d(priv)) {
385 lbs_deb_join("ADHOC_START: dnld_countryinfo_11d failed\n");
386 ret = -1;
387 goto out;
388 }
389
390 lbs_deb_join("ADHOC_START: Starting Ad-Hoc BSS on channel %d, band %d\n",
391 assoc_req->channel, assoc_req->band);
392
393 priv->adhoccreate = 1;
394 priv->mode = IW_MODE_ADHOC;
395
396 ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_START, &cmd);
397 if (ret == 0)
398 ret = lbs_adhoc_post(priv, (struct cmd_header *) &cmd);
399
400 out:
401 lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
402 return ret;
403 }
404
405 /**
406 * @brief Stop and Ad-Hoc network and exit Ad-Hoc mode
407 *
408 * @param priv A pointer to struct lbs_private structure
409 * @return 0 on success, or an error
410 */
411 int lbs_adhoc_stop(struct lbs_private *priv)
412 {
413 struct cmd_ds_802_11_ad_hoc_stop cmd;
414 int ret;
415
416 lbs_deb_enter(LBS_DEB_JOIN);
417
418 memset(&cmd, 0, sizeof (cmd));
419 cmd.hdr.size = cpu_to_le16 (sizeof (cmd));
420
421 ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_STOP, &cmd);
422
423 /* Clean up everything even if there was an error */
424 lbs_mac_event_disconnected(priv);
425
426 lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
427 return ret;
428 }
429
430 static inline int match_bss_no_security(struct lbs_802_11_security *secinfo,
431 struct bss_descriptor *match_bss)
432 {
433 if (!secinfo->wep_enabled && !secinfo->WPAenabled
434 && !secinfo->WPA2enabled
435 && match_bss->wpa_ie[0] != WLAN_EID_GENERIC
436 && match_bss->rsn_ie[0] != WLAN_EID_RSN
437 && !(match_bss->capability & WLAN_CAPABILITY_PRIVACY))
438 return 1;
439 else
440 return 0;
441 }
442
443 static inline int match_bss_static_wep(struct lbs_802_11_security *secinfo,
444 struct bss_descriptor *match_bss)
445 {
446 if (secinfo->wep_enabled && !secinfo->WPAenabled
447 && !secinfo->WPA2enabled
448 && (match_bss->capability & WLAN_CAPABILITY_PRIVACY))
449 return 1;
450 else
451 return 0;
452 }
453
454 static inline int match_bss_wpa(struct lbs_802_11_security *secinfo,
455 struct bss_descriptor *match_bss)
456 {
457 if (!secinfo->wep_enabled && secinfo->WPAenabled
458 && (match_bss->wpa_ie[0] == WLAN_EID_GENERIC)
459 /* privacy bit may NOT be set in some APs like LinkSys WRT54G
460 && (match_bss->capability & WLAN_CAPABILITY_PRIVACY) */
461 )
462 return 1;
463 else
464 return 0;
465 }
466
467 static inline int match_bss_wpa2(struct lbs_802_11_security *secinfo,
468 struct bss_descriptor *match_bss)
469 {
470 if (!secinfo->wep_enabled && secinfo->WPA2enabled &&
471 (match_bss->rsn_ie[0] == WLAN_EID_RSN)
472 /* privacy bit may NOT be set in some APs like LinkSys WRT54G
473 (match_bss->capability & WLAN_CAPABILITY_PRIVACY) */
474 )
475 return 1;
476 else
477 return 0;
478 }
479
480 static inline int match_bss_dynamic_wep(struct lbs_802_11_security *secinfo,
481 struct bss_descriptor *match_bss)
482 {
483 if (!secinfo->wep_enabled && !secinfo->WPAenabled
484 && !secinfo->WPA2enabled
485 && (match_bss->wpa_ie[0] != WLAN_EID_GENERIC)
486 && (match_bss->rsn_ie[0] != WLAN_EID_RSN)
487 && (match_bss->capability & WLAN_CAPABILITY_PRIVACY))
488 return 1;
489 else
490 return 0;
491 }
492
493 /**
494 * @brief Check if a scanned network compatible with the driver settings
495 *
496 * WEP WPA WPA2 ad-hoc encrypt Network
497 * enabled enabled enabled AES mode privacy WPA WPA2 Compatible
498 * 0 0 0 0 NONE 0 0 0 yes No security
499 * 1 0 0 0 NONE 1 0 0 yes Static WEP
500 * 0 1 0 0 x 1x 1 x yes WPA
501 * 0 0 1 0 x 1x x 1 yes WPA2
502 * 0 0 0 1 NONE 1 0 0 yes Ad-hoc AES
503 * 0 0 0 0 !=NONE 1 0 0 yes Dynamic WEP
504 *
505 *
506 * @param priv A pointer to struct lbs_private
507 * @param index Index in scantable to check against current driver settings
508 * @param mode Network mode: Infrastructure or IBSS
509 *
510 * @return Index in scantable, or error code if negative
511 */
512 static int is_network_compatible(struct lbs_private *priv,
513 struct bss_descriptor *bss, uint8_t mode)
514 {
515 int matched = 0;
516
517 lbs_deb_enter(LBS_DEB_SCAN);
518
519 if (bss->mode != mode)
520 goto done;
521
522 matched = match_bss_no_security(&priv->secinfo, bss);
523 if (matched)
524 goto done;
525 matched = match_bss_static_wep(&priv->secinfo, bss);
526 if (matched)
527 goto done;
528 matched = match_bss_wpa(&priv->secinfo, bss);
529 if (matched) {
530 lbs_deb_scan("is_network_compatible() WPA: wpa_ie 0x%x "
531 "wpa2_ie 0x%x WEP %s WPA %s WPA2 %s "
532 "privacy 0x%x\n", bss->wpa_ie[0], bss->rsn_ie[0],
533 priv->secinfo.wep_enabled ? "e" : "d",
534 priv->secinfo.WPAenabled ? "e" : "d",
535 priv->secinfo.WPA2enabled ? "e" : "d",
536 (bss->capability & WLAN_CAPABILITY_PRIVACY));
537 goto done;
538 }
539 matched = match_bss_wpa2(&priv->secinfo, bss);
540 if (matched) {
541 lbs_deb_scan("is_network_compatible() WPA2: wpa_ie 0x%x "
542 "wpa2_ie 0x%x WEP %s WPA %s WPA2 %s "
543 "privacy 0x%x\n", bss->wpa_ie[0], bss->rsn_ie[0],
544 priv->secinfo.wep_enabled ? "e" : "d",
545 priv->secinfo.WPAenabled ? "e" : "d",
546 priv->secinfo.WPA2enabled ? "e" : "d",
547 (bss->capability & WLAN_CAPABILITY_PRIVACY));
548 goto done;
549 }
550 matched = match_bss_dynamic_wep(&priv->secinfo, bss);
551 if (matched) {
552 lbs_deb_scan("is_network_compatible() dynamic WEP: "
553 "wpa_ie 0x%x wpa2_ie 0x%x privacy 0x%x\n",
554 bss->wpa_ie[0], bss->rsn_ie[0],
555 (bss->capability & WLAN_CAPABILITY_PRIVACY));
556 goto done;
557 }
558
559 /* bss security settings don't match those configured on card */
560 lbs_deb_scan("is_network_compatible() FAILED: wpa_ie 0x%x "
561 "wpa2_ie 0x%x WEP %s WPA %s WPA2 %s privacy 0x%x\n",
562 bss->wpa_ie[0], bss->rsn_ie[0],
563 priv->secinfo.wep_enabled ? "e" : "d",
564 priv->secinfo.WPAenabled ? "e" : "d",
565 priv->secinfo.WPA2enabled ? "e" : "d",
566 (bss->capability & WLAN_CAPABILITY_PRIVACY));
567
568 done:
569 lbs_deb_leave_args(LBS_DEB_SCAN, "matched: %d", matched);
570 return matched;
571 }
572
573 /**
574 * @brief This function finds a specific compatible BSSID in the scan list
575 *
576 * Used in association code
577 *
578 * @param priv A pointer to struct lbs_private
579 * @param bssid BSSID to find in the scan list
580 * @param mode Network mode: Infrastructure or IBSS
581 *
582 * @return index in BSSID list, or error return code (< 0)
583 */
584 static struct bss_descriptor *lbs_find_bssid_in_list(struct lbs_private *priv,
585 uint8_t *bssid, uint8_t mode)
586 {
587 struct bss_descriptor *iter_bss;
588 struct bss_descriptor *found_bss = NULL;
589
590 lbs_deb_enter(LBS_DEB_SCAN);
591
592 if (!bssid)
593 goto out;
594
595 lbs_deb_hex(LBS_DEB_SCAN, "looking for", bssid, ETH_ALEN);
596
597 /* Look through the scan table for a compatible match. The loop will
598 * continue past a matched bssid that is not compatible in case there
599 * is an AP with multiple SSIDs assigned to the same BSSID
600 */
601 mutex_lock(&priv->lock);
602 list_for_each_entry(iter_bss, &priv->network_list, list) {
603 if (compare_ether_addr(iter_bss->bssid, bssid))
604 continue; /* bssid doesn't match */
605 switch (mode) {
606 case IW_MODE_INFRA:
607 case IW_MODE_ADHOC:
608 if (!is_network_compatible(priv, iter_bss, mode))
609 break;
610 found_bss = iter_bss;
611 break;
612 default:
613 found_bss = iter_bss;
614 break;
615 }
616 }
617 mutex_unlock(&priv->lock);
618
619 out:
620 lbs_deb_leave_args(LBS_DEB_SCAN, "found_bss %p", found_bss);
621 return found_bss;
622 }
623
624 /**
625 * @brief This function finds ssid in ssid list.
626 *
627 * Used in association code
628 *
629 * @param priv A pointer to struct lbs_private
630 * @param ssid SSID to find in the list
631 * @param bssid BSSID to qualify the SSID selection (if provided)
632 * @param mode Network mode: Infrastructure or IBSS
633 *
634 * @return index in BSSID list
635 */
636 static struct bss_descriptor *lbs_find_ssid_in_list(struct lbs_private *priv,
637 uint8_t *ssid, uint8_t ssid_len,
638 uint8_t *bssid, uint8_t mode,
639 int channel)
640 {
641 u32 bestrssi = 0;
642 struct bss_descriptor *iter_bss = NULL;
643 struct bss_descriptor *found_bss = NULL;
644 struct bss_descriptor *tmp_oldest = NULL;
645
646 lbs_deb_enter(LBS_DEB_SCAN);
647
648 mutex_lock(&priv->lock);
649
650 list_for_each_entry(iter_bss, &priv->network_list, list) {
651 if (!tmp_oldest ||
652 (iter_bss->last_scanned < tmp_oldest->last_scanned))
653 tmp_oldest = iter_bss;
654
655 if (lbs_ssid_cmp(iter_bss->ssid, iter_bss->ssid_len,
656 ssid, ssid_len) != 0)
657 continue; /* ssid doesn't match */
658 if (bssid && compare_ether_addr(iter_bss->bssid, bssid) != 0)
659 continue; /* bssid doesn't match */
660 if ((channel > 0) && (iter_bss->channel != channel))
661 continue; /* channel doesn't match */
662
663 switch (mode) {
664 case IW_MODE_INFRA:
665 case IW_MODE_ADHOC:
666 if (!is_network_compatible(priv, iter_bss, mode))
667 break;
668
669 if (bssid) {
670 /* Found requested BSSID */
671 found_bss = iter_bss;
672 goto out;
673 }
674
675 if (SCAN_RSSI(iter_bss->rssi) > bestrssi) {
676 bestrssi = SCAN_RSSI(iter_bss->rssi);
677 found_bss = iter_bss;
678 }
679 break;
680 case IW_MODE_AUTO:
681 default:
682 if (SCAN_RSSI(iter_bss->rssi) > bestrssi) {
683 bestrssi = SCAN_RSSI(iter_bss->rssi);
684 found_bss = iter_bss;
685 }
686 break;
687 }
688 }
689
690 out:
691 mutex_unlock(&priv->lock);
692 lbs_deb_leave_args(LBS_DEB_SCAN, "found_bss %p", found_bss);
693 return found_bss;
694 }
695
696 static int assoc_helper_essid(struct lbs_private *priv,
697 struct assoc_request * assoc_req)
698 {
699 int ret = 0;
700 struct bss_descriptor * bss;
701 int channel = -1;
702 DECLARE_SSID_BUF(ssid);
703
704 lbs_deb_enter(LBS_DEB_ASSOC);
705
706 /* FIXME: take channel into account when picking SSIDs if a channel
707 * is set.
708 */
709
710 if (test_bit(ASSOC_FLAG_CHANNEL, &assoc_req->flags))
711 channel = assoc_req->channel;
712
713 lbs_deb_assoc("SSID '%s' requested\n",
714 print_ssid(ssid, assoc_req->ssid, assoc_req->ssid_len));
715 if (assoc_req->mode == IW_MODE_INFRA) {
716 lbs_send_specific_ssid_scan(priv, assoc_req->ssid,
717 assoc_req->ssid_len);
718
719 bss = lbs_find_ssid_in_list(priv, assoc_req->ssid,
720 assoc_req->ssid_len, NULL, IW_MODE_INFRA, channel);
721 if (bss != NULL) {
722 memcpy(&assoc_req->bss, bss, sizeof(struct bss_descriptor));
723 ret = lbs_associate(priv, assoc_req);
724 } else {
725 lbs_deb_assoc("SSID not found; cannot associate\n");
726 }
727 } else if (assoc_req->mode == IW_MODE_ADHOC) {
728 /* Scan for the network, do not save previous results. Stale
729 * scan data will cause us to join a non-existant adhoc network
730 */
731 lbs_send_specific_ssid_scan(priv, assoc_req->ssid,
732 assoc_req->ssid_len);
733
734 /* Search for the requested SSID in the scan table */
735 bss = lbs_find_ssid_in_list(priv, assoc_req->ssid,
736 assoc_req->ssid_len, NULL, IW_MODE_ADHOC, channel);
737 if (bss != NULL) {
738 lbs_deb_assoc("SSID found, will join\n");
739 memcpy(&assoc_req->bss, bss, sizeof(struct bss_descriptor));
740 lbs_adhoc_join(priv, assoc_req);
741 } else {
742 /* else send START command */
743 lbs_deb_assoc("SSID not found, creating adhoc network\n");
744 memcpy(&assoc_req->bss.ssid, &assoc_req->ssid,
745 IW_ESSID_MAX_SIZE);
746 assoc_req->bss.ssid_len = assoc_req->ssid_len;
747 lbs_adhoc_start(priv, assoc_req);
748 }
749 }
750
751 lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
752 return ret;
753 }
754
755
756 static int assoc_helper_bssid(struct lbs_private *priv,
757 struct assoc_request * assoc_req)
758 {
759 int ret = 0;
760 struct bss_descriptor * bss;
761
762 lbs_deb_enter_args(LBS_DEB_ASSOC, "BSSID %pM", assoc_req->bssid);
763
764 /* Search for index position in list for requested MAC */
765 bss = lbs_find_bssid_in_list(priv, assoc_req->bssid,
766 assoc_req->mode);
767 if (bss == NULL) {
768 lbs_deb_assoc("ASSOC: WAP: BSSID %pM not found, "
769 "cannot associate.\n", assoc_req->bssid);
770 goto out;
771 }
772
773 memcpy(&assoc_req->bss, bss, sizeof(struct bss_descriptor));
774 if (assoc_req->mode == IW_MODE_INFRA) {
775 ret = lbs_associate(priv, assoc_req);
776 lbs_deb_assoc("ASSOC: lbs_associate(bssid) returned %d\n", ret);
777 } else if (assoc_req->mode == IW_MODE_ADHOC) {
778 lbs_adhoc_join(priv, assoc_req);
779 }
780
781 out:
782 lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
783 return ret;
784 }
785
786
787 static int assoc_helper_associate(struct lbs_private *priv,
788 struct assoc_request * assoc_req)
789 {
790 int ret = 0, done = 0;
791
792 lbs_deb_enter(LBS_DEB_ASSOC);
793
794 /* If we're given and 'any' BSSID, try associating based on SSID */
795
796 if (test_bit(ASSOC_FLAG_BSSID, &assoc_req->flags)) {
797 if (compare_ether_addr(bssid_any, assoc_req->bssid)
798 && compare_ether_addr(bssid_off, assoc_req->bssid)) {
799 ret = assoc_helper_bssid(priv, assoc_req);
800 done = 1;
801 }
802 }
803
804 if (!done && test_bit(ASSOC_FLAG_SSID, &assoc_req->flags)) {
805 ret = assoc_helper_essid(priv, assoc_req);
806 }
807
808 lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
809 return ret;
810 }
811
812
813 static int assoc_helper_mode(struct lbs_private *priv,
814 struct assoc_request * assoc_req)
815 {
816 int ret = 0;
817
818 lbs_deb_enter(LBS_DEB_ASSOC);
819
820 if (assoc_req->mode == priv->mode)
821 goto done;
822
823 if (assoc_req->mode == IW_MODE_INFRA) {
824 if (priv->psstate != PS_STATE_FULL_POWER)
825 lbs_ps_wakeup(priv, CMD_OPTION_WAITFORRSP);
826 priv->psmode = LBS802_11POWERMODECAM;
827 }
828
829 priv->mode = assoc_req->mode;
830 ret = lbs_set_snmp_mib(priv, SNMP_MIB_OID_BSS_TYPE, assoc_req->mode);
831
832 done:
833 lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
834 return ret;
835 }
836
837 static int assoc_helper_channel(struct lbs_private *priv,
838 struct assoc_request * assoc_req)
839 {
840 int ret = 0;
841
842 lbs_deb_enter(LBS_DEB_ASSOC);
843
844 ret = lbs_update_channel(priv);
845 if (ret) {
846 lbs_deb_assoc("ASSOC: channel: error getting channel.\n");
847 goto done;
848 }
849
850 if (assoc_req->channel == priv->curbssparams.channel)
851 goto done;
852
853 if (priv->mesh_dev) {
854 /* Change mesh channel first; 21.p21 firmware won't let
855 you change channel otherwise (even though it'll return
856 an error to this */
857 lbs_mesh_config(priv, CMD_ACT_MESH_CONFIG_STOP,
858 assoc_req->channel);
859 }
860
861 lbs_deb_assoc("ASSOC: channel: %d -> %d\n",
862 priv->curbssparams.channel, assoc_req->channel);
863
864 ret = lbs_set_channel(priv, assoc_req->channel);
865 if (ret < 0)
866 lbs_deb_assoc("ASSOC: channel: error setting channel.\n");
867
868 /* FIXME: shouldn't need to grab the channel _again_ after setting
869 * it since the firmware is supposed to return the new channel, but
870 * whatever... */
871 ret = lbs_update_channel(priv);
872 if (ret) {
873 lbs_deb_assoc("ASSOC: channel: error getting channel.\n");
874 goto done;
875 }
876
877 if (assoc_req->channel != priv->curbssparams.channel) {
878 lbs_deb_assoc("ASSOC: channel: failed to update channel to %d\n",
879 assoc_req->channel);
880 goto restore_mesh;
881 }
882
883 if ( assoc_req->secinfo.wep_enabled
884 && (assoc_req->wep_keys[0].len
885 || assoc_req->wep_keys[1].len
886 || assoc_req->wep_keys[2].len
887 || assoc_req->wep_keys[3].len)) {
888 /* Make sure WEP keys are re-sent to firmware */
889 set_bit(ASSOC_FLAG_WEP_KEYS, &assoc_req->flags);
890 }
891
892 /* Must restart/rejoin adhoc networks after channel change */
893 set_bit(ASSOC_FLAG_SSID, &assoc_req->flags);
894
895 restore_mesh:
896 if (priv->mesh_dev)
897 lbs_mesh_config(priv, CMD_ACT_MESH_CONFIG_START,
898 priv->curbssparams.channel);
899
900 done:
901 lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
902 return ret;
903 }
904
905
906 static int assoc_helper_wep_keys(struct lbs_private *priv,
907 struct assoc_request *assoc_req)
908 {
909 int i;
910 int ret = 0;
911
912 lbs_deb_enter(LBS_DEB_ASSOC);
913
914 /* Set or remove WEP keys */
915 if (assoc_req->wep_keys[0].len || assoc_req->wep_keys[1].len ||
916 assoc_req->wep_keys[2].len || assoc_req->wep_keys[3].len)
917 ret = lbs_cmd_802_11_set_wep(priv, CMD_ACT_ADD, assoc_req);
918 else
919 ret = lbs_cmd_802_11_set_wep(priv, CMD_ACT_REMOVE, assoc_req);
920
921 if (ret)
922 goto out;
923
924 /* enable/disable the MAC's WEP packet filter */
925 if (assoc_req->secinfo.wep_enabled)
926 priv->mac_control |= CMD_ACT_MAC_WEP_ENABLE;
927 else
928 priv->mac_control &= ~CMD_ACT_MAC_WEP_ENABLE;
929
930 lbs_set_mac_control(priv);
931
932 mutex_lock(&priv->lock);
933
934 /* Copy WEP keys into priv wep key fields */
935 for (i = 0; i < 4; i++) {
936 memcpy(&priv->wep_keys[i], &assoc_req->wep_keys[i],
937 sizeof(struct enc_key));
938 }
939 priv->wep_tx_keyidx = assoc_req->wep_tx_keyidx;
940
941 mutex_unlock(&priv->lock);
942
943 out:
944 lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
945 return ret;
946 }
947
948 static int assoc_helper_secinfo(struct lbs_private *priv,
949 struct assoc_request * assoc_req)
950 {
951 int ret = 0;
952 uint16_t do_wpa;
953 uint16_t rsn = 0;
954
955 lbs_deb_enter(LBS_DEB_ASSOC);
956
957 memcpy(&priv->secinfo, &assoc_req->secinfo,
958 sizeof(struct lbs_802_11_security));
959
960 lbs_set_mac_control(priv);
961
962 /* If RSN is already enabled, don't try to enable it again, since
963 * ENABLE_RSN resets internal state machines and will clobber the
964 * 4-way WPA handshake.
965 */
966
967 /* Get RSN enabled/disabled */
968 ret = lbs_cmd_802_11_enable_rsn(priv, CMD_ACT_GET, &rsn);
969 if (ret) {
970 lbs_deb_assoc("Failed to get RSN status: %d\n", ret);
971 goto out;
972 }
973
974 /* Don't re-enable RSN if it's already enabled */
975 do_wpa = assoc_req->secinfo.WPAenabled || assoc_req->secinfo.WPA2enabled;
976 if (do_wpa == rsn)
977 goto out;
978
979 /* Set RSN enabled/disabled */
980 ret = lbs_cmd_802_11_enable_rsn(priv, CMD_ACT_SET, &do_wpa);
981
982 out:
983 lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
984 return ret;
985 }
986
987
988 static int assoc_helper_wpa_keys(struct lbs_private *priv,
989 struct assoc_request * assoc_req)
990 {
991 int ret = 0;
992 unsigned int flags = assoc_req->flags;
993
994 lbs_deb_enter(LBS_DEB_ASSOC);
995
996 /* Work around older firmware bug where WPA unicast and multicast
997 * keys must be set independently. Seen in SDIO parts with firmware
998 * version 5.0.11p0.
999 */
1000
1001 if (test_bit(ASSOC_FLAG_WPA_UCAST_KEY, &assoc_req->flags)) {
1002 clear_bit(ASSOC_FLAG_WPA_MCAST_KEY, &assoc_req->flags);
1003 ret = lbs_cmd_802_11_key_material(priv, CMD_ACT_SET, assoc_req);
1004 assoc_req->flags = flags;
1005 }
1006
1007 if (ret)
1008 goto out;
1009
1010 if (test_bit(ASSOC_FLAG_WPA_MCAST_KEY, &assoc_req->flags)) {
1011 clear_bit(ASSOC_FLAG_WPA_UCAST_KEY, &assoc_req->flags);
1012
1013 ret = lbs_cmd_802_11_key_material(priv, CMD_ACT_SET, assoc_req);
1014 assoc_req->flags = flags;
1015 }
1016
1017 out:
1018 lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
1019 return ret;
1020 }
1021
1022
1023 static int assoc_helper_wpa_ie(struct lbs_private *priv,
1024 struct assoc_request * assoc_req)
1025 {
1026 int ret = 0;
1027
1028 lbs_deb_enter(LBS_DEB_ASSOC);
1029
1030 if (assoc_req->secinfo.WPAenabled || assoc_req->secinfo.WPA2enabled) {
1031 memcpy(&priv->wpa_ie, &assoc_req->wpa_ie, assoc_req->wpa_ie_len);
1032 priv->wpa_ie_len = assoc_req->wpa_ie_len;
1033 } else {
1034 memset(&priv->wpa_ie, 0, MAX_WPA_IE_LEN);
1035 priv->wpa_ie_len = 0;
1036 }
1037
1038 lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
1039 return ret;
1040 }
1041
1042
1043 static int should_deauth_infrastructure(struct lbs_private *priv,
1044 struct assoc_request * assoc_req)
1045 {
1046 int ret = 0;
1047
1048 if (priv->connect_status != LBS_CONNECTED)
1049 return 0;
1050
1051 lbs_deb_enter(LBS_DEB_ASSOC);
1052 if (test_bit(ASSOC_FLAG_SSID, &assoc_req->flags)) {
1053 lbs_deb_assoc("Deauthenticating due to new SSID\n");
1054 ret = 1;
1055 goto out;
1056 }
1057
1058 if (test_bit(ASSOC_FLAG_SECINFO, &assoc_req->flags)) {
1059 if (priv->secinfo.auth_mode != assoc_req->secinfo.auth_mode) {
1060 lbs_deb_assoc("Deauthenticating due to new security\n");
1061 ret = 1;
1062 goto out;
1063 }
1064 }
1065
1066 if (test_bit(ASSOC_FLAG_BSSID, &assoc_req->flags)) {
1067 lbs_deb_assoc("Deauthenticating due to new BSSID\n");
1068 ret = 1;
1069 goto out;
1070 }
1071
1072 if (test_bit(ASSOC_FLAG_CHANNEL, &assoc_req->flags)) {
1073 lbs_deb_assoc("Deauthenticating due to channel switch\n");
1074 ret = 1;
1075 goto out;
1076 }
1077
1078 /* FIXME: deal with 'auto' mode somehow */
1079 if (test_bit(ASSOC_FLAG_MODE, &assoc_req->flags)) {
1080 if (assoc_req->mode != IW_MODE_INFRA) {
1081 lbs_deb_assoc("Deauthenticating due to leaving "
1082 "infra mode\n");
1083 ret = 1;
1084 goto out;
1085 }
1086 }
1087
1088 out:
1089 lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
1090 return ret;
1091 }
1092
1093
1094 static int should_stop_adhoc(struct lbs_private *priv,
1095 struct assoc_request * assoc_req)
1096 {
1097 lbs_deb_enter(LBS_DEB_ASSOC);
1098
1099 if (priv->connect_status != LBS_CONNECTED)
1100 return 0;
1101
1102 if (lbs_ssid_cmp(priv->curbssparams.ssid,
1103 priv->curbssparams.ssid_len,
1104 assoc_req->ssid, assoc_req->ssid_len) != 0)
1105 return 1;
1106
1107 /* FIXME: deal with 'auto' mode somehow */
1108 if (test_bit(ASSOC_FLAG_MODE, &assoc_req->flags)) {
1109 if (assoc_req->mode != IW_MODE_ADHOC)
1110 return 1;
1111 }
1112
1113 if (test_bit(ASSOC_FLAG_CHANNEL, &assoc_req->flags)) {
1114 if (assoc_req->channel != priv->curbssparams.channel)
1115 return 1;
1116 }
1117
1118 lbs_deb_leave(LBS_DEB_ASSOC);
1119 return 0;
1120 }
1121
1122
1123 /**
1124 * @brief This function finds the best SSID in the Scan List
1125 *
1126 * Search the scan table for the best SSID that also matches the current
1127 * adapter network preference (infrastructure or adhoc)
1128 *
1129 * @param priv A pointer to struct lbs_private
1130 *
1131 * @return index in BSSID list
1132 */
1133 static struct bss_descriptor *lbs_find_best_ssid_in_list(
1134 struct lbs_private *priv, uint8_t mode)
1135 {
1136 uint8_t bestrssi = 0;
1137 struct bss_descriptor *iter_bss;
1138 struct bss_descriptor *best_bss = NULL;
1139
1140 lbs_deb_enter(LBS_DEB_SCAN);
1141
1142 mutex_lock(&priv->lock);
1143
1144 list_for_each_entry(iter_bss, &priv->network_list, list) {
1145 switch (mode) {
1146 case IW_MODE_INFRA:
1147 case IW_MODE_ADHOC:
1148 if (!is_network_compatible(priv, iter_bss, mode))
1149 break;
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 case IW_MODE_AUTO:
1156 default:
1157 if (SCAN_RSSI(iter_bss->rssi) <= bestrssi)
1158 break;
1159 bestrssi = SCAN_RSSI(iter_bss->rssi);
1160 best_bss = iter_bss;
1161 break;
1162 }
1163 }
1164
1165 mutex_unlock(&priv->lock);
1166 lbs_deb_leave_args(LBS_DEB_SCAN, "best_bss %p", best_bss);
1167 return best_bss;
1168 }
1169
1170 /**
1171 * @brief Find the best AP
1172 *
1173 * Used from association worker.
1174 *
1175 * @param priv A pointer to struct lbs_private structure
1176 * @param pSSID A pointer to AP's ssid
1177 *
1178 * @return 0--success, otherwise--fail
1179 */
1180 static int lbs_find_best_network_ssid(struct lbs_private *priv,
1181 uint8_t *out_ssid, uint8_t *out_ssid_len, uint8_t preferred_mode,
1182 uint8_t *out_mode)
1183 {
1184 int ret = -1;
1185 struct bss_descriptor *found;
1186
1187 lbs_deb_enter(LBS_DEB_SCAN);
1188
1189 priv->scan_ssid_len = 0;
1190 lbs_scan_networks(priv, 1);
1191 if (priv->surpriseremoved)
1192 goto out;
1193
1194 found = lbs_find_best_ssid_in_list(priv, preferred_mode);
1195 if (found && (found->ssid_len > 0)) {
1196 memcpy(out_ssid, &found->ssid, IW_ESSID_MAX_SIZE);
1197 *out_ssid_len = found->ssid_len;
1198 *out_mode = found->mode;
1199 ret = 0;
1200 }
1201
1202 out:
1203 lbs_deb_leave_args(LBS_DEB_SCAN, "ret %d", ret);
1204 return ret;
1205 }
1206
1207
1208 void lbs_association_worker(struct work_struct *work)
1209 {
1210 struct lbs_private *priv = container_of(work, struct lbs_private,
1211 assoc_work.work);
1212 struct assoc_request * assoc_req = NULL;
1213 int ret = 0;
1214 int find_any_ssid = 0;
1215 DECLARE_SSID_BUF(ssid);
1216
1217 lbs_deb_enter(LBS_DEB_ASSOC);
1218
1219 mutex_lock(&priv->lock);
1220 assoc_req = priv->pending_assoc_req;
1221 priv->pending_assoc_req = NULL;
1222 priv->in_progress_assoc_req = assoc_req;
1223 mutex_unlock(&priv->lock);
1224
1225 if (!assoc_req)
1226 goto done;
1227
1228 lbs_deb_assoc(
1229 "Association Request:\n"
1230 " flags: 0x%08lx\n"
1231 " SSID: '%s'\n"
1232 " chann: %d\n"
1233 " band: %d\n"
1234 " mode: %d\n"
1235 " BSSID: %pM\n"
1236 " secinfo: %s%s%s\n"
1237 " auth_mode: %d\n",
1238 assoc_req->flags,
1239 print_ssid(ssid, assoc_req->ssid, assoc_req->ssid_len),
1240 assoc_req->channel, assoc_req->band, assoc_req->mode,
1241 assoc_req->bssid,
1242 assoc_req->secinfo.WPAenabled ? " WPA" : "",
1243 assoc_req->secinfo.WPA2enabled ? " WPA2" : "",
1244 assoc_req->secinfo.wep_enabled ? " WEP" : "",
1245 assoc_req->secinfo.auth_mode);
1246
1247 /* If 'any' SSID was specified, find an SSID to associate with */
1248 if (test_bit(ASSOC_FLAG_SSID, &assoc_req->flags)
1249 && !assoc_req->ssid_len)
1250 find_any_ssid = 1;
1251
1252 /* But don't use 'any' SSID if there's a valid locked BSSID to use */
1253 if (test_bit(ASSOC_FLAG_BSSID, &assoc_req->flags)) {
1254 if (compare_ether_addr(assoc_req->bssid, bssid_any)
1255 && compare_ether_addr(assoc_req->bssid, bssid_off))
1256 find_any_ssid = 0;
1257 }
1258
1259 if (find_any_ssid) {
1260 u8 new_mode = assoc_req->mode;
1261
1262 ret = lbs_find_best_network_ssid(priv, assoc_req->ssid,
1263 &assoc_req->ssid_len, assoc_req->mode, &new_mode);
1264 if (ret) {
1265 lbs_deb_assoc("Could not find best network\n");
1266 ret = -ENETUNREACH;
1267 goto out;
1268 }
1269
1270 /* Ensure we switch to the mode of the AP */
1271 if (assoc_req->mode == IW_MODE_AUTO) {
1272 set_bit(ASSOC_FLAG_MODE, &assoc_req->flags);
1273 assoc_req->mode = new_mode;
1274 }
1275 }
1276
1277 /*
1278 * Check if the attributes being changing require deauthentication
1279 * from the currently associated infrastructure access point.
1280 */
1281 if (priv->mode == IW_MODE_INFRA) {
1282 if (should_deauth_infrastructure(priv, assoc_req)) {
1283 ret = lbs_cmd_80211_deauthenticate(priv,
1284 priv->curbssparams.bssid,
1285 WLAN_REASON_DEAUTH_LEAVING);
1286 if (ret) {
1287 lbs_deb_assoc("Deauthentication due to new "
1288 "configuration request failed: %d\n",
1289 ret);
1290 }
1291 }
1292 } else if (priv->mode == IW_MODE_ADHOC) {
1293 if (should_stop_adhoc(priv, assoc_req)) {
1294 ret = lbs_adhoc_stop(priv);
1295 if (ret) {
1296 lbs_deb_assoc("Teardown of AdHoc network due to "
1297 "new configuration request failed: %d\n",
1298 ret);
1299 }
1300
1301 }
1302 }
1303
1304 /* Send the various configuration bits to the firmware */
1305 if (test_bit(ASSOC_FLAG_MODE, &assoc_req->flags)) {
1306 ret = assoc_helper_mode(priv, assoc_req);
1307 if (ret)
1308 goto out;
1309 }
1310
1311 if (test_bit(ASSOC_FLAG_CHANNEL, &assoc_req->flags)) {
1312 ret = assoc_helper_channel(priv, assoc_req);
1313 if (ret)
1314 goto out;
1315 }
1316
1317 if ( test_bit(ASSOC_FLAG_WEP_KEYS, &assoc_req->flags)
1318 || test_bit(ASSOC_FLAG_WEP_TX_KEYIDX, &assoc_req->flags)) {
1319 ret = assoc_helper_wep_keys(priv, assoc_req);
1320 if (ret)
1321 goto out;
1322 }
1323
1324 if (test_bit(ASSOC_FLAG_SECINFO, &assoc_req->flags)) {
1325 ret = assoc_helper_secinfo(priv, assoc_req);
1326 if (ret)
1327 goto out;
1328 }
1329
1330 if (test_bit(ASSOC_FLAG_WPA_IE, &assoc_req->flags)) {
1331 ret = assoc_helper_wpa_ie(priv, assoc_req);
1332 if (ret)
1333 goto out;
1334 }
1335
1336 if (test_bit(ASSOC_FLAG_WPA_MCAST_KEY, &assoc_req->flags)
1337 || test_bit(ASSOC_FLAG_WPA_UCAST_KEY, &assoc_req->flags)) {
1338 ret = assoc_helper_wpa_keys(priv, assoc_req);
1339 if (ret)
1340 goto out;
1341 }
1342
1343 /* SSID/BSSID should be the _last_ config option set, because they
1344 * trigger the association attempt.
1345 */
1346 if (test_bit(ASSOC_FLAG_BSSID, &assoc_req->flags)
1347 || test_bit(ASSOC_FLAG_SSID, &assoc_req->flags)) {
1348 int success = 1;
1349
1350 ret = assoc_helper_associate(priv, assoc_req);
1351 if (ret) {
1352 lbs_deb_assoc("ASSOC: association unsuccessful: %d\n",
1353 ret);
1354 success = 0;
1355 }
1356
1357 if (priv->connect_status != LBS_CONNECTED) {
1358 lbs_deb_assoc("ASSOC: association unsuccessful, "
1359 "not connected\n");
1360 success = 0;
1361 }
1362
1363 if (success) {
1364 lbs_deb_assoc("associated to %pM\n",
1365 priv->curbssparams.bssid);
1366 lbs_prepare_and_send_command(priv,
1367 CMD_802_11_RSSI,
1368 0, CMD_OPTION_WAITFORRSP, 0, NULL);
1369 } else {
1370 ret = -1;
1371 }
1372 }
1373
1374 out:
1375 if (ret) {
1376 lbs_deb_assoc("ASSOC: reconfiguration attempt unsuccessful: %d\n",
1377 ret);
1378 }
1379
1380 mutex_lock(&priv->lock);
1381 priv->in_progress_assoc_req = NULL;
1382 mutex_unlock(&priv->lock);
1383 kfree(assoc_req);
1384
1385 done:
1386 lbs_deb_leave(LBS_DEB_ASSOC);
1387 }
1388
1389
1390 /*
1391 * Caller MUST hold any necessary locks
1392 */
1393 struct assoc_request *lbs_get_association_request(struct lbs_private *priv)
1394 {
1395 struct assoc_request * assoc_req;
1396
1397 lbs_deb_enter(LBS_DEB_ASSOC);
1398 if (!priv->pending_assoc_req) {
1399 priv->pending_assoc_req = kzalloc(sizeof(struct assoc_request),
1400 GFP_KERNEL);
1401 if (!priv->pending_assoc_req) {
1402 lbs_pr_info("Not enough memory to allocate association"
1403 " request!\n");
1404 return NULL;
1405 }
1406 }
1407
1408 /* Copy current configuration attributes to the association request,
1409 * but don't overwrite any that are already set.
1410 */
1411 assoc_req = priv->pending_assoc_req;
1412 if (!test_bit(ASSOC_FLAG_SSID, &assoc_req->flags)) {
1413 memcpy(&assoc_req->ssid, &priv->curbssparams.ssid,
1414 IW_ESSID_MAX_SIZE);
1415 assoc_req->ssid_len = priv->curbssparams.ssid_len;
1416 }
1417
1418 if (!test_bit(ASSOC_FLAG_CHANNEL, &assoc_req->flags))
1419 assoc_req->channel = priv->curbssparams.channel;
1420
1421 if (!test_bit(ASSOC_FLAG_BAND, &assoc_req->flags))
1422 assoc_req->band = priv->curbssparams.band;
1423
1424 if (!test_bit(ASSOC_FLAG_MODE, &assoc_req->flags))
1425 assoc_req->mode = priv->mode;
1426
1427 if (!test_bit(ASSOC_FLAG_BSSID, &assoc_req->flags)) {
1428 memcpy(&assoc_req->bssid, priv->curbssparams.bssid,
1429 ETH_ALEN);
1430 }
1431
1432 if (!test_bit(ASSOC_FLAG_WEP_KEYS, &assoc_req->flags)) {
1433 int i;
1434 for (i = 0; i < 4; i++) {
1435 memcpy(&assoc_req->wep_keys[i], &priv->wep_keys[i],
1436 sizeof(struct enc_key));
1437 }
1438 }
1439
1440 if (!test_bit(ASSOC_FLAG_WEP_TX_KEYIDX, &assoc_req->flags))
1441 assoc_req->wep_tx_keyidx = priv->wep_tx_keyidx;
1442
1443 if (!test_bit(ASSOC_FLAG_WPA_MCAST_KEY, &assoc_req->flags)) {
1444 memcpy(&assoc_req->wpa_mcast_key, &priv->wpa_mcast_key,
1445 sizeof(struct enc_key));
1446 }
1447
1448 if (!test_bit(ASSOC_FLAG_WPA_UCAST_KEY, &assoc_req->flags)) {
1449 memcpy(&assoc_req->wpa_unicast_key, &priv->wpa_unicast_key,
1450 sizeof(struct enc_key));
1451 }
1452
1453 if (!test_bit(ASSOC_FLAG_SECINFO, &assoc_req->flags)) {
1454 memcpy(&assoc_req->secinfo, &priv->secinfo,
1455 sizeof(struct lbs_802_11_security));
1456 }
1457
1458 if (!test_bit(ASSOC_FLAG_WPA_IE, &assoc_req->flags)) {
1459 memcpy(&assoc_req->wpa_ie, &priv->wpa_ie,
1460 MAX_WPA_IE_LEN);
1461 assoc_req->wpa_ie_len = priv->wpa_ie_len;
1462 }
1463
1464 lbs_deb_leave(LBS_DEB_ASSOC);
1465 return assoc_req;
1466 }
1467
1468
1469 /**
1470 * @brief This function prepares command of authenticate.
1471 *
1472 * @param priv A pointer to struct lbs_private structure
1473 * @param cmd A pointer to cmd_ds_command structure
1474 * @param pdata_buf Void cast of pointer to a BSSID to authenticate with
1475 *
1476 * @return 0 or -1
1477 */
1478 int lbs_cmd_80211_authenticate(struct lbs_private *priv,
1479 struct cmd_ds_command *cmd,
1480 void *pdata_buf)
1481 {
1482 struct cmd_ds_802_11_authenticate *pauthenticate = &cmd->params.auth;
1483 int ret = -1;
1484 u8 *bssid = pdata_buf;
1485
1486 lbs_deb_enter(LBS_DEB_JOIN);
1487
1488 cmd->command = cpu_to_le16(CMD_802_11_AUTHENTICATE);
1489 cmd->size = cpu_to_le16(sizeof(struct cmd_ds_802_11_authenticate)
1490 + S_DS_GEN);
1491
1492 /* translate auth mode to 802.11 defined wire value */
1493 switch (priv->secinfo.auth_mode) {
1494 case IW_AUTH_ALG_OPEN_SYSTEM:
1495 pauthenticate->authtype = 0x00;
1496 break;
1497 case IW_AUTH_ALG_SHARED_KEY:
1498 pauthenticate->authtype = 0x01;
1499 break;
1500 case IW_AUTH_ALG_LEAP:
1501 pauthenticate->authtype = 0x80;
1502 break;
1503 default:
1504 lbs_deb_join("AUTH_CMD: invalid auth alg 0x%X\n",
1505 priv->secinfo.auth_mode);
1506 goto out;
1507 }
1508
1509 memcpy(pauthenticate->macaddr, bssid, ETH_ALEN);
1510
1511 lbs_deb_join("AUTH_CMD: BSSID %pM, auth 0x%x\n",
1512 bssid, pauthenticate->authtype);
1513 ret = 0;
1514
1515 out:
1516 lbs_deb_leave_args(LBS_DEB_JOIN, "ret %d", ret);
1517 return ret;
1518 }
1519
1520 /**
1521 * @brief Deauthenticate from a specific BSS
1522 *
1523 * @param priv A pointer to struct lbs_private structure
1524 * @param bssid The specific BSS to deauthenticate from
1525 * @param reason The 802.11 sec. 7.3.1.7 Reason Code for deauthenticating
1526 *
1527 * @return 0 on success, error on failure
1528 */
1529 int lbs_cmd_80211_deauthenticate(struct lbs_private *priv, u8 bssid[ETH_ALEN],
1530 u16 reason)
1531 {
1532 struct cmd_ds_802_11_deauthenticate cmd;
1533 int ret;
1534
1535 lbs_deb_enter(LBS_DEB_JOIN);
1536
1537 memset(&cmd, 0, sizeof(cmd));
1538 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1539 memcpy(cmd.macaddr, &bssid[0], ETH_ALEN);
1540 cmd.reasoncode = cpu_to_le16(reason);
1541
1542 ret = lbs_cmd_with_response(priv, CMD_802_11_DEAUTHENTICATE, &cmd);
1543
1544 /* Clean up everything even if there was an error; can't assume that
1545 * we're still authenticated to the AP after trying to deauth.
1546 */
1547 lbs_mac_event_disconnected(priv);
1548
1549 lbs_deb_leave(LBS_DEB_JOIN);
1550 return ret;
1551 }
1552
1553 int lbs_cmd_80211_associate(struct lbs_private *priv,
1554 struct cmd_ds_command *cmd, void *pdata_buf)
1555 {
1556 struct cmd_ds_802_11_associate *passo = &cmd->params.associate;
1557 int ret = 0;
1558 struct assoc_request *assoc_req = pdata_buf;
1559 struct bss_descriptor *bss = &assoc_req->bss;
1560 u8 *pos;
1561 u16 tmpcap, tmplen;
1562 struct mrvlietypes_ssidparamset *ssid;
1563 struct mrvlietypes_phyparamset *phy;
1564 struct mrvlietypes_ssparamset *ss;
1565 struct mrvlietypes_ratesparamset *rates;
1566 struct mrvlietypes_rsnparamset *rsn;
1567
1568 lbs_deb_enter(LBS_DEB_ASSOC);
1569
1570 pos = (u8 *) passo;
1571
1572 if (!priv) {
1573 ret = -1;
1574 goto done;
1575 }
1576
1577 cmd->command = cpu_to_le16(CMD_802_11_ASSOCIATE);
1578
1579 memcpy(passo->peerstaaddr, bss->bssid, sizeof(passo->peerstaaddr));
1580 pos += sizeof(passo->peerstaaddr);
1581
1582 /* set the listen interval */
1583 passo->listeninterval = cpu_to_le16(MRVDRV_DEFAULT_LISTEN_INTERVAL);
1584
1585 pos += sizeof(passo->capability);
1586 pos += sizeof(passo->listeninterval);
1587 pos += sizeof(passo->bcnperiod);
1588 pos += sizeof(passo->dtimperiod);
1589
1590 ssid = (struct mrvlietypes_ssidparamset *) pos;
1591 ssid->header.type = cpu_to_le16(TLV_TYPE_SSID);
1592 tmplen = bss->ssid_len;
1593 ssid->header.len = cpu_to_le16(tmplen);
1594 memcpy(ssid->ssid, bss->ssid, tmplen);
1595 pos += sizeof(ssid->header) + tmplen;
1596
1597 phy = (struct mrvlietypes_phyparamset *) pos;
1598 phy->header.type = cpu_to_le16(TLV_TYPE_PHY_DS);
1599 tmplen = sizeof(phy->fh_ds.dsparamset);
1600 phy->header.len = cpu_to_le16(tmplen);
1601 memcpy(&phy->fh_ds.dsparamset,
1602 &bss->phyparamset.dsparamset.currentchan,
1603 tmplen);
1604 pos += sizeof(phy->header) + tmplen;
1605
1606 ss = (struct mrvlietypes_ssparamset *) pos;
1607 ss->header.type = cpu_to_le16(TLV_TYPE_CF);
1608 tmplen = sizeof(ss->cf_ibss.cfparamset);
1609 ss->header.len = cpu_to_le16(tmplen);
1610 pos += sizeof(ss->header) + tmplen;
1611
1612 rates = (struct mrvlietypes_ratesparamset *) pos;
1613 rates->header.type = cpu_to_le16(TLV_TYPE_RATES);
1614 memcpy(&rates->rates, &bss->rates, MAX_RATES);
1615 tmplen = MAX_RATES;
1616 if (get_common_rates(priv, rates->rates, &tmplen)) {
1617 ret = -1;
1618 goto done;
1619 }
1620 pos += sizeof(rates->header) + tmplen;
1621 rates->header.len = cpu_to_le16(tmplen);
1622 lbs_deb_assoc("ASSOC_CMD: num rates %u\n", tmplen);
1623
1624 /* Copy the infra. association rates into Current BSS state structure */
1625 memset(&priv->curbssparams.rates, 0, sizeof(priv->curbssparams.rates));
1626 memcpy(&priv->curbssparams.rates, &rates->rates, tmplen);
1627
1628 /* Set MSB on basic rates as the firmware requires, but _after_
1629 * copying to current bss rates.
1630 */
1631 lbs_set_basic_rate_flags(rates->rates, tmplen);
1632
1633 if (assoc_req->secinfo.WPAenabled || assoc_req->secinfo.WPA2enabled) {
1634 rsn = (struct mrvlietypes_rsnparamset *) pos;
1635 /* WPA_IE or WPA2_IE */
1636 rsn->header.type = cpu_to_le16((u16) assoc_req->wpa_ie[0]);
1637 tmplen = (u16) assoc_req->wpa_ie[1];
1638 rsn->header.len = cpu_to_le16(tmplen);
1639 memcpy(rsn->rsnie, &assoc_req->wpa_ie[2], tmplen);
1640 lbs_deb_hex(LBS_DEB_JOIN, "ASSOC_CMD: RSN IE", (u8 *) rsn,
1641 sizeof(rsn->header) + tmplen);
1642 pos += sizeof(rsn->header) + tmplen;
1643 }
1644
1645 /* update curbssparams */
1646 priv->curbssparams.channel = bss->phyparamset.dsparamset.currentchan;
1647
1648 if (lbs_parse_dnld_countryinfo_11d(priv, bss)) {
1649 ret = -1;
1650 goto done;
1651 }
1652
1653 cmd->size = cpu_to_le16((u16) (pos - (u8 *) passo) + S_DS_GEN);
1654
1655 /* set the capability info */
1656 tmpcap = (bss->capability & CAPINFO_MASK);
1657 if (bss->mode == IW_MODE_INFRA)
1658 tmpcap |= WLAN_CAPABILITY_ESS;
1659 passo->capability = cpu_to_le16(tmpcap);
1660 lbs_deb_assoc("ASSOC_CMD: capability 0x%04x\n", tmpcap);
1661
1662 done:
1663 lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
1664 return ret;
1665 }
1666
1667 int lbs_ret_80211_associate(struct lbs_private *priv,
1668 struct cmd_ds_command *resp)
1669 {
1670 int ret = 0;
1671 union iwreq_data wrqu;
1672 struct ieeetypes_assocrsp *passocrsp;
1673 struct bss_descriptor *bss;
1674 u16 status_code;
1675
1676 lbs_deb_enter(LBS_DEB_ASSOC);
1677
1678 if (!priv->in_progress_assoc_req) {
1679 lbs_deb_assoc("ASSOC_RESP: no in-progress assoc request\n");
1680 ret = -1;
1681 goto done;
1682 }
1683 bss = &priv->in_progress_assoc_req->bss;
1684
1685 passocrsp = (struct ieeetypes_assocrsp *) &resp->params;
1686
1687 /*
1688 * Older FW versions map the IEEE 802.11 Status Code in the association
1689 * response to the following values returned in passocrsp->statuscode:
1690 *
1691 * IEEE Status Code Marvell Status Code
1692 * 0 -> 0x0000 ASSOC_RESULT_SUCCESS
1693 * 13 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED
1694 * 14 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED
1695 * 15 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED
1696 * 16 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED
1697 * others -> 0x0003 ASSOC_RESULT_REFUSED
1698 *
1699 * Other response codes:
1700 * 0x0001 -> ASSOC_RESULT_INVALID_PARAMETERS (unused)
1701 * 0x0002 -> ASSOC_RESULT_TIMEOUT (internal timer expired waiting for
1702 * association response from the AP)
1703 */
1704
1705 status_code = le16_to_cpu(passocrsp->statuscode);
1706 switch (status_code) {
1707 case 0x00:
1708 break;
1709 case 0x01:
1710 lbs_deb_assoc("ASSOC_RESP: invalid parameters\n");
1711 break;
1712 case 0x02:
1713 lbs_deb_assoc("ASSOC_RESP: internal timer "
1714 "expired while waiting for the AP\n");
1715 break;
1716 case 0x03:
1717 lbs_deb_assoc("ASSOC_RESP: association "
1718 "refused by AP\n");
1719 break;
1720 case 0x04:
1721 lbs_deb_assoc("ASSOC_RESP: authentication "
1722 "refused by AP\n");
1723 break;
1724 default:
1725 lbs_deb_assoc("ASSOC_RESP: failure reason 0x%02x "
1726 " unknown\n", status_code);
1727 break;
1728 }
1729
1730 if (status_code) {
1731 lbs_mac_event_disconnected(priv);
1732 ret = -1;
1733 goto done;
1734 }
1735
1736 lbs_deb_hex(LBS_DEB_ASSOC, "ASSOC_RESP", (void *)&resp->params,
1737 le16_to_cpu(resp->size) - S_DS_GEN);
1738
1739 /* Send a Media Connected event, according to the Spec */
1740 priv->connect_status = LBS_CONNECTED;
1741
1742 /* Update current SSID and BSSID */
1743 memcpy(&priv->curbssparams.ssid, &bss->ssid, IW_ESSID_MAX_SIZE);
1744 priv->curbssparams.ssid_len = bss->ssid_len;
1745 memcpy(priv->curbssparams.bssid, bss->bssid, ETH_ALEN);
1746
1747 priv->SNR[TYPE_RXPD][TYPE_AVG] = 0;
1748 priv->NF[TYPE_RXPD][TYPE_AVG] = 0;
1749
1750 memset(priv->rawSNR, 0x00, sizeof(priv->rawSNR));
1751 memset(priv->rawNF, 0x00, sizeof(priv->rawNF));
1752 priv->nextSNRNF = 0;
1753 priv->numSNRNF = 0;
1754
1755 netif_carrier_on(priv->dev);
1756 if (!priv->tx_pending_len)
1757 netif_wake_queue(priv->dev);
1758
1759 memcpy(wrqu.ap_addr.sa_data, priv->curbssparams.bssid, ETH_ALEN);
1760 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
1761 wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
1762
1763 done:
1764 lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
1765 return ret;
1766 }
1767
1768 static int lbs_adhoc_post(struct lbs_private *priv, struct cmd_header *resp)
1769 {
1770 int ret = 0;
1771 u16 command = le16_to_cpu(resp->command);
1772 u16 result = le16_to_cpu(resp->result);
1773 struct cmd_ds_802_11_ad_hoc_result *adhoc_resp;
1774 union iwreq_data wrqu;
1775 struct bss_descriptor *bss;
1776 DECLARE_SSID_BUF(ssid);
1777
1778 lbs_deb_enter(LBS_DEB_JOIN);
1779
1780 adhoc_resp = (struct cmd_ds_802_11_ad_hoc_result *) resp;
1781
1782 if (!priv->in_progress_assoc_req) {
1783 lbs_deb_join("ADHOC_RESP: no in-progress association "
1784 "request\n");
1785 ret = -1;
1786 goto done;
1787 }
1788 bss = &priv->in_progress_assoc_req->bss;
1789
1790 /*
1791 * Join result code 0 --> SUCCESS
1792 */
1793 if (result) {
1794 lbs_deb_join("ADHOC_RESP: failed (result 0x%X)\n", result);
1795 if (priv->connect_status == LBS_CONNECTED)
1796 lbs_mac_event_disconnected(priv);
1797 ret = -1;
1798 goto done;
1799 }
1800
1801 /* Send a Media Connected event, according to the Spec */
1802 priv->connect_status = LBS_CONNECTED;
1803
1804 if (command == CMD_RET(CMD_802_11_AD_HOC_START)) {
1805 /* Update the created network descriptor with the new BSSID */
1806 memcpy(bss->bssid, adhoc_resp->bssid, ETH_ALEN);
1807 }
1808
1809 /* Set the BSSID from the joined/started descriptor */
1810 memcpy(&priv->curbssparams.bssid, bss->bssid, ETH_ALEN);
1811
1812 /* Set the new SSID to current SSID */
1813 memcpy(&priv->curbssparams.ssid, &bss->ssid, IW_ESSID_MAX_SIZE);
1814 priv->curbssparams.ssid_len = bss->ssid_len;
1815
1816 netif_carrier_on(priv->dev);
1817 if (!priv->tx_pending_len)
1818 netif_wake_queue(priv->dev);
1819
1820 memset(&wrqu, 0, sizeof(wrqu));
1821 memcpy(wrqu.ap_addr.sa_data, priv->curbssparams.bssid, ETH_ALEN);
1822 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
1823 wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
1824
1825 lbs_deb_join("ADHOC_RESP: Joined/started '%s', BSSID %pM, channel %d\n",
1826 print_ssid(ssid, bss->ssid, bss->ssid_len),
1827 priv->curbssparams.bssid,
1828 priv->curbssparams.channel);
1829
1830 done:
1831 lbs_deb_leave_args(LBS_DEB_JOIN, "ret %d", ret);
1832 return ret;
1833 }
1834
Nao low-level kernelspace/userspace library that runs on our robots, Nao-Team HTWK