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path: root/drivers/net/wireless/libertas/assoc.c
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-rw-r--r--drivers/net/wireless/libertas/assoc.c2264
1 files changed, 0 insertions, 2264 deletions
diff --git a/drivers/net/wireless/libertas/assoc.c b/drivers/net/wireless/libertas/assoc.c
deleted file mode 100644
index aa06070e5ea..00000000000
--- a/drivers/net/wireless/libertas/assoc.c
+++ /dev/null
@@ -1,2264 +0,0 @@
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 <linux/slab.h>
8#include <net/lib80211.h>
9
10#include "assoc.h"
11#include "decl.h"
12#include "host.h"
13#include "scan.h"
14#include "cmd.h"
15
16static const u8 bssid_any[ETH_ALEN] __attribute__ ((aligned (2))) =
17 { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
18static const u8 bssid_off[ETH_ALEN] __attribute__ ((aligned (2))) =
19 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
20
21/* The firmware needs the following bits masked out of the beacon-derived
22 * capability field when associating/joining to a BSS:
23 * 9 (QoS), 11 (APSD), 12 (unused), 14 (unused), 15 (unused)
24 */
25#define CAPINFO_MASK (~(0xda00))
26
27/**
28 * 802.11b/g supported bitrates (in 500Kb/s units)
29 */
30u8 lbs_bg_rates[MAX_RATES] =
31 { 0x02, 0x04, 0x0b, 0x16, 0x0c, 0x12, 0x18, 0x24, 0x30, 0x48, 0x60, 0x6c,
320x00, 0x00 };
33
34
35static int assoc_helper_wep_keys(struct lbs_private *priv,
36 struct assoc_request *assoc_req);
37
38/**
39 * @brief This function finds common rates between rates and card rates.
40 *
41 * It will fill common rates in rates as output if found.
42 *
43 * NOTE: Setting the MSB of the basic rates need to be taken
44 * care, either before or after calling this function
45 *
46 * @param priv A pointer to struct lbs_private structure
47 * @param rates the buffer which keeps input and output
48 * @param rates_size the size of rates buffer; new size of buffer on return,
49 * which will be less than or equal to original rates_size
50 *
51 * @return 0 on success, or -1 on error
52 */
53static int get_common_rates(struct lbs_private *priv,
54 u8 *rates,
55 u16 *rates_size)
56{
57 int i, j;
58 u8 intersection[MAX_RATES];
59 u16 intersection_size;
60 u16 num_rates = 0;
61
62 intersection_size = min_t(u16, *rates_size, ARRAY_SIZE(intersection));
63
64 /* Allow each rate from 'rates' that is supported by the hardware */
65 for (i = 0; i < ARRAY_SIZE(lbs_bg_rates) && lbs_bg_rates[i]; i++) {
66 for (j = 0; j < intersection_size && rates[j]; j++) {
67 if (rates[j] == lbs_bg_rates[i])
68 intersection[num_rates++] = rates[j];
69 }
70 }
71
72 lbs_deb_hex(LBS_DEB_JOIN, "AP rates ", rates, *rates_size);
73 lbs_deb_hex(LBS_DEB_JOIN, "card rates ", lbs_bg_rates,
74 ARRAY_SIZE(lbs_bg_rates));
75 lbs_deb_hex(LBS_DEB_JOIN, "common rates", intersection, num_rates);
76 lbs_deb_join("TX data rate 0x%02x\n", priv->cur_rate);
77
78 if (!priv->enablehwauto) {
79 for (i = 0; i < num_rates; i++) {
80 if (intersection[i] == priv->cur_rate)
81 goto done;
82 }
83 lbs_pr_alert("Previously set fixed data rate %#x isn't "
84 "compatible with the network.\n", priv->cur_rate);
85 return -1;
86 }
87
88done:
89 memset(rates, 0, *rates_size);
90 *rates_size = num_rates;
91 memcpy(rates, intersection, num_rates);
92 return 0;
93}
94
95
96/**
97 * @brief Sets the MSB on basic rates as the firmware requires
98 *
99 * Scan through an array and set the MSB for basic data rates.
100 *
101 * @param rates buffer of data rates
102 * @param len size of buffer
103 */
104static void lbs_set_basic_rate_flags(u8 *rates, size_t len)
105{
106 int i;
107
108 for (i = 0; i < len; i++) {
109 if (rates[i] == 0x02 || rates[i] == 0x04 ||
110 rates[i] == 0x0b || rates[i] == 0x16)
111 rates[i] |= 0x80;
112 }
113}
114
115
116static u8 iw_auth_to_ieee_auth(u8 auth)
117{
118 if (auth == IW_AUTH_ALG_OPEN_SYSTEM)
119 return 0x00;
120 else if (auth == IW_AUTH_ALG_SHARED_KEY)
121 return 0x01;
122 else if (auth == IW_AUTH_ALG_LEAP)
123 return 0x80;
124
125 lbs_deb_join("%s: invalid auth alg 0x%X\n", __func__, auth);
126 return 0;
127}
128
129/**
130 * @brief This function prepares the authenticate command. AUTHENTICATE only
131 * sets the authentication suite for future associations, as the firmware
132 * handles authentication internally during the ASSOCIATE command.
133 *
134 * @param priv A pointer to struct lbs_private structure
135 * @param bssid The peer BSSID with which to authenticate
136 * @param auth The authentication mode to use (from wireless.h)
137 *
138 * @return 0 or -1
139 */
140static int lbs_set_authentication(struct lbs_private *priv, u8 bssid[6], u8 auth)
141{
142 struct cmd_ds_802_11_authenticate cmd;
143 int ret = -1;
144
145 lbs_deb_enter(LBS_DEB_JOIN);
146
147 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
148 memcpy(cmd.bssid, bssid, ETH_ALEN);
149
150 cmd.authtype = iw_auth_to_ieee_auth(auth);
151
152 lbs_deb_join("AUTH_CMD: BSSID %pM, auth 0x%x\n", bssid, cmd.authtype);
153
154 ret = lbs_cmd_with_response(priv, CMD_802_11_AUTHENTICATE, &cmd);
155
156 lbs_deb_leave_args(LBS_DEB_JOIN, "ret %d", ret);
157 return ret;
158}
159
160
161int lbs_cmd_802_11_set_wep(struct lbs_private *priv, uint16_t cmd_action,
162 struct assoc_request *assoc)
163{
164 struct cmd_ds_802_11_set_wep cmd;
165 int ret = 0;
166
167 lbs_deb_enter(LBS_DEB_CMD);
168
169 memset(&cmd, 0, sizeof(cmd));
170 cmd.hdr.command = cpu_to_le16(CMD_802_11_SET_WEP);
171 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
172
173 cmd.action = cpu_to_le16(cmd_action);
174
175 if (cmd_action == CMD_ACT_ADD) {
176 int i;
177
178 /* default tx key index */
179 cmd.keyindex = cpu_to_le16(assoc->wep_tx_keyidx &
180 CMD_WEP_KEY_INDEX_MASK);
181
182 /* Copy key types and material to host command structure */
183 for (i = 0; i < 4; i++) {
184 struct enc_key *pkey = &assoc->wep_keys[i];
185
186 switch (pkey->len) {
187 case KEY_LEN_WEP_40:
188 cmd.keytype[i] = CMD_TYPE_WEP_40_BIT;
189 memmove(cmd.keymaterial[i], pkey->key, pkey->len);
190 lbs_deb_cmd("SET_WEP: add key %d (40 bit)\n", i);
191 break;
192 case KEY_LEN_WEP_104:
193 cmd.keytype[i] = CMD_TYPE_WEP_104_BIT;
194 memmove(cmd.keymaterial[i], pkey->key, pkey->len);
195 lbs_deb_cmd("SET_WEP: add key %d (104 bit)\n", i);
196 break;
197 case 0:
198 break;
199 default:
200 lbs_deb_cmd("SET_WEP: invalid key %d, length %d\n",
201 i, pkey->len);
202 ret = -1;
203 goto done;
204 break;
205 }
206 }
207 } else if (cmd_action == CMD_ACT_REMOVE) {
208 /* ACT_REMOVE clears _all_ WEP keys */
209
210 /* default tx key index */
211 cmd.keyindex = cpu_to_le16(priv->wep_tx_keyidx &
212 CMD_WEP_KEY_INDEX_MASK);
213 lbs_deb_cmd("SET_WEP: remove key %d\n", priv->wep_tx_keyidx);
214 }
215
216 ret = lbs_cmd_with_response(priv, CMD_802_11_SET_WEP, &cmd);
217done:
218 lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret);
219 return ret;
220}
221
222int lbs_cmd_802_11_enable_rsn(struct lbs_private *priv, uint16_t cmd_action,
223 uint16_t *enable)
224{
225 struct cmd_ds_802_11_enable_rsn cmd;
226 int ret;
227
228 lbs_deb_enter(LBS_DEB_CMD);
229
230 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
231 cmd.action = cpu_to_le16(cmd_action);
232
233 if (cmd_action == CMD_ACT_GET)
234 cmd.enable = 0;
235 else {
236 if (*enable)
237 cmd.enable = cpu_to_le16(CMD_ENABLE_RSN);
238 else
239 cmd.enable = cpu_to_le16(CMD_DISABLE_RSN);
240 lbs_deb_cmd("ENABLE_RSN: %d\n", *enable);
241 }
242
243 ret = lbs_cmd_with_response(priv, CMD_802_11_ENABLE_RSN, &cmd);
244 if (!ret && cmd_action == CMD_ACT_GET)
245 *enable = le16_to_cpu(cmd.enable);
246
247 lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret);
248 return ret;
249}
250
251static void set_one_wpa_key(struct MrvlIEtype_keyParamSet *keyparam,
252 struct enc_key *key)
253{
254 lbs_deb_enter(LBS_DEB_CMD);
255
256 if (key->flags & KEY_INFO_WPA_ENABLED)
257 keyparam->keyinfo |= cpu_to_le16(KEY_INFO_WPA_ENABLED);
258 if (key->flags & KEY_INFO_WPA_UNICAST)
259 keyparam->keyinfo |= cpu_to_le16(KEY_INFO_WPA_UNICAST);
260 if (key->flags & KEY_INFO_WPA_MCAST)
261 keyparam->keyinfo |= cpu_to_le16(KEY_INFO_WPA_MCAST);
262
263 keyparam->type = cpu_to_le16(TLV_TYPE_KEY_MATERIAL);
264 keyparam->keytypeid = cpu_to_le16(key->type);
265 keyparam->keylen = cpu_to_le16(key->len);
266 memcpy(keyparam->key, key->key, key->len);
267
268 /* Length field doesn't include the {type,length} header */
269 keyparam->length = cpu_to_le16(sizeof(*keyparam) - 4);
270 lbs_deb_leave(LBS_DEB_CMD);
271}
272
273int lbs_cmd_802_11_key_material(struct lbs_private *priv, uint16_t cmd_action,
274 struct assoc_request *assoc)
275{
276 struct cmd_ds_802_11_key_material cmd;
277 int ret = 0;
278 int index = 0;
279
280 lbs_deb_enter(LBS_DEB_CMD);
281
282 cmd.action = cpu_to_le16(cmd_action);
283 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
284
285 if (cmd_action == CMD_ACT_GET) {
286 cmd.hdr.size = cpu_to_le16(sizeof(struct cmd_header) + 2);
287 } else {
288 memset(cmd.keyParamSet, 0, sizeof(cmd.keyParamSet));
289
290 if (test_bit(ASSOC_FLAG_WPA_UCAST_KEY, &assoc->flags)) {
291 set_one_wpa_key(&cmd.keyParamSet[index],
292 &assoc->wpa_unicast_key);
293 index++;
294 }
295
296 if (test_bit(ASSOC_FLAG_WPA_MCAST_KEY, &assoc->flags)) {
297 set_one_wpa_key(&cmd.keyParamSet[index],
298 &assoc->wpa_mcast_key);
299 index++;
300 }
301
302 /* The common header and as many keys as we included */
303 cmd.hdr.size = cpu_to_le16(offsetof(typeof(cmd),
304 keyParamSet[index]));
305 }
306 ret = lbs_cmd_with_response(priv, CMD_802_11_KEY_MATERIAL, &cmd);
307 /* Copy the returned key to driver private data */
308 if (!ret && cmd_action == CMD_ACT_GET) {
309 void *buf_ptr = cmd.keyParamSet;
310 void *resp_end = &(&cmd)[1];
311
312 while (buf_ptr < resp_end) {
313 struct MrvlIEtype_keyParamSet *keyparam = buf_ptr;
314 struct enc_key *key;
315 uint16_t param_set_len = le16_to_cpu(keyparam->length);
316 uint16_t key_len = le16_to_cpu(keyparam->keylen);
317 uint16_t key_flags = le16_to_cpu(keyparam->keyinfo);
318 uint16_t key_type = le16_to_cpu(keyparam->keytypeid);
319 void *end;
320
321 end = (void *)keyparam + sizeof(keyparam->type)
322 + sizeof(keyparam->length) + param_set_len;
323
324 /* Make sure we don't access past the end of the IEs */
325 if (end > resp_end)
326 break;
327
328 if (key_flags & KEY_INFO_WPA_UNICAST)
329 key = &priv->wpa_unicast_key;
330 else if (key_flags & KEY_INFO_WPA_MCAST)
331 key = &priv->wpa_mcast_key;
332 else
333 break;
334
335 /* Copy returned key into driver */
336 memset(key, 0, sizeof(struct enc_key));
337 if (key_len > sizeof(key->key))
338 break;
339 key->type = key_type;
340 key->flags = key_flags;
341 key->len = key_len;
342 memcpy(key->key, keyparam->key, key->len);
343
344 buf_ptr = end + 1;
345 }
346 }
347
348 lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret);
349 return ret;
350}
351
352static __le16 lbs_rate_to_fw_bitmap(int rate, int lower_rates_ok)
353{
354/* Bit Rate
355* 15:13 Reserved
356* 12 54 Mbps
357* 11 48 Mbps
358* 10 36 Mbps
359* 9 24 Mbps
360* 8 18 Mbps
361* 7 12 Mbps
362* 6 9 Mbps
363* 5 6 Mbps
364* 4 Reserved
365* 3 11 Mbps
366* 2 5.5 Mbps
367* 1 2 Mbps
368* 0 1 Mbps
369**/
370
371 uint16_t ratemask;
372 int i = lbs_data_rate_to_fw_index(rate);
373 if (lower_rates_ok)
374 ratemask = (0x1fef >> (12 - i));
375 else
376 ratemask = (1 << i);
377 return cpu_to_le16(ratemask);
378}
379
380int lbs_cmd_802_11_rate_adapt_rateset(struct lbs_private *priv,
381 uint16_t cmd_action)
382{
383 struct cmd_ds_802_11_rate_adapt_rateset cmd;
384 int ret;
385
386 lbs_deb_enter(LBS_DEB_CMD);
387
388 if (!priv->cur_rate && !priv->enablehwauto)
389 return -EINVAL;
390
391 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
392
393 cmd.action = cpu_to_le16(cmd_action);
394 cmd.enablehwauto = cpu_to_le16(priv->enablehwauto);
395 cmd.bitmap = lbs_rate_to_fw_bitmap(priv->cur_rate, priv->enablehwauto);
396 ret = lbs_cmd_with_response(priv, CMD_802_11_RATE_ADAPT_RATESET, &cmd);
397 if (!ret && cmd_action == CMD_ACT_GET)
398 priv->enablehwauto = le16_to_cpu(cmd.enablehwauto);
399
400 lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret);
401 return ret;
402}
403
404/**
405 * @brief Set the data rate
406 *
407 * @param priv A pointer to struct lbs_private structure
408 * @param rate The desired data rate, or 0 to clear a locked rate
409 *
410 * @return 0 on success, error on failure
411 */
412int lbs_set_data_rate(struct lbs_private *priv, u8 rate)
413{
414 struct cmd_ds_802_11_data_rate cmd;
415 int ret = 0;
416
417 lbs_deb_enter(LBS_DEB_CMD);
418
419 memset(&cmd, 0, sizeof(cmd));
420 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
421
422 if (rate > 0) {
423 cmd.action = cpu_to_le16(CMD_ACT_SET_TX_FIX_RATE);
424 cmd.rates[0] = lbs_data_rate_to_fw_index(rate);
425 if (cmd.rates[0] == 0) {
426 lbs_deb_cmd("DATA_RATE: invalid requested rate of"
427 " 0x%02X\n", rate);
428 ret = 0;
429 goto out;
430 }
431 lbs_deb_cmd("DATA_RATE: set fixed 0x%02X\n", cmd.rates[0]);
432 } else {
433 cmd.action = cpu_to_le16(CMD_ACT_SET_TX_AUTO);
434 lbs_deb_cmd("DATA_RATE: setting auto\n");
435 }
436
437 ret = lbs_cmd_with_response(priv, CMD_802_11_DATA_RATE, &cmd);
438 if (ret)
439 goto out;
440
441 lbs_deb_hex(LBS_DEB_CMD, "DATA_RATE_RESP", (u8 *) &cmd, sizeof(cmd));
442
443 /* FIXME: get actual rates FW can do if this command actually returns
444 * all data rates supported.
445 */
446 priv->cur_rate = lbs_fw_index_to_data_rate(cmd.rates[0]);
447 lbs_deb_cmd("DATA_RATE: current rate is 0x%02x\n", priv->cur_rate);
448
449out:
450 lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret);
451 return ret;
452}
453
454
455int lbs_cmd_802_11_rssi(struct lbs_private *priv,
456 struct cmd_ds_command *cmd)
457{
458
459 lbs_deb_enter(LBS_DEB_CMD);
460 cmd->command = cpu_to_le16(CMD_802_11_RSSI);
461 cmd->size = cpu_to_le16(sizeof(struct cmd_ds_802_11_rssi) +
462 sizeof(struct cmd_header));
463 cmd->params.rssi.N = cpu_to_le16(DEFAULT_BCN_AVG_FACTOR);
464
465 /* reset Beacon SNR/NF/RSSI values */
466 priv->SNR[TYPE_BEACON][TYPE_NOAVG] = 0;
467 priv->SNR[TYPE_BEACON][TYPE_AVG] = 0;
468 priv->NF[TYPE_BEACON][TYPE_NOAVG] = 0;
469 priv->NF[TYPE_BEACON][TYPE_AVG] = 0;
470 priv->RSSI[TYPE_BEACON][TYPE_NOAVG] = 0;
471 priv->RSSI[TYPE_BEACON][TYPE_AVG] = 0;
472
473 lbs_deb_leave(LBS_DEB_CMD);
474 return 0;
475}
476
477int lbs_ret_802_11_rssi(struct lbs_private *priv,
478 struct cmd_ds_command *resp)
479{
480 struct cmd_ds_802_11_rssi_rsp *rssirsp = &resp->params.rssirsp;
481
482 lbs_deb_enter(LBS_DEB_CMD);
483
484 /* store the non average value */
485 priv->SNR[TYPE_BEACON][TYPE_NOAVG] = get_unaligned_le16(&rssirsp->SNR);
486 priv->NF[TYPE_BEACON][TYPE_NOAVG] =
487 get_unaligned_le16(&rssirsp->noisefloor);
488
489 priv->SNR[TYPE_BEACON][TYPE_AVG] = get_unaligned_le16(&rssirsp->avgSNR);
490 priv->NF[TYPE_BEACON][TYPE_AVG] =
491 get_unaligned_le16(&rssirsp->avgnoisefloor);
492
493 priv->RSSI[TYPE_BEACON][TYPE_NOAVG] =
494 CAL_RSSI(priv->SNR[TYPE_BEACON][TYPE_NOAVG],
495 priv->NF[TYPE_BEACON][TYPE_NOAVG]);
496
497 priv->RSSI[TYPE_BEACON][TYPE_AVG] =
498 CAL_RSSI(priv->SNR[TYPE_BEACON][TYPE_AVG] / AVG_SCALE,
499 priv->NF[TYPE_BEACON][TYPE_AVG] / AVG_SCALE);
500
501 lbs_deb_cmd("RSSI: beacon %d, avg %d\n",
502 priv->RSSI[TYPE_BEACON][TYPE_NOAVG],
503 priv->RSSI[TYPE_BEACON][TYPE_AVG]);
504
505 lbs_deb_leave(LBS_DEB_CMD);
506 return 0;
507}
508
509
510int lbs_cmd_bcn_ctrl(struct lbs_private *priv,
511 struct cmd_ds_command *cmd,
512 u16 cmd_action)
513{
514 struct cmd_ds_802_11_beacon_control
515 *bcn_ctrl = &cmd->params.bcn_ctrl;
516
517 lbs_deb_enter(LBS_DEB_CMD);
518 cmd->size =
519 cpu_to_le16(sizeof(struct cmd_ds_802_11_beacon_control)
520 + sizeof(struct cmd_header));
521 cmd->command = cpu_to_le16(CMD_802_11_BEACON_CTRL);
522
523 bcn_ctrl->action = cpu_to_le16(cmd_action);
524 bcn_ctrl->beacon_enable = cpu_to_le16(priv->beacon_enable);
525 bcn_ctrl->beacon_period = cpu_to_le16(priv->beacon_period);
526
527 lbs_deb_leave(LBS_DEB_CMD);
528 return 0;
529}
530
531int lbs_ret_802_11_bcn_ctrl(struct lbs_private *priv,
532 struct cmd_ds_command *resp)
533{
534 struct cmd_ds_802_11_beacon_control *bcn_ctrl =
535 &resp->params.bcn_ctrl;
536
537 lbs_deb_enter(LBS_DEB_CMD);
538
539 if (bcn_ctrl->action == CMD_ACT_GET) {
540 priv->beacon_enable = (u8) le16_to_cpu(bcn_ctrl->beacon_enable);
541 priv->beacon_period = le16_to_cpu(bcn_ctrl->beacon_period);
542 }
543
544 lbs_deb_enter(LBS_DEB_CMD);
545 return 0;
546}
547
548
549
550static int lbs_assoc_post(struct lbs_private *priv,
551 struct cmd_ds_802_11_associate_response *resp)
552{
553 int ret = 0;
554 union iwreq_data wrqu;
555 struct bss_descriptor *bss;
556 u16 status_code;
557
558 lbs_deb_enter(LBS_DEB_ASSOC);
559
560 if (!priv->in_progress_assoc_req) {
561 lbs_deb_assoc("ASSOC_RESP: no in-progress assoc request\n");
562 ret = -1;
563 goto done;
564 }
565 bss = &priv->in_progress_assoc_req->bss;
566
567 /*
568 * Older FW versions map the IEEE 802.11 Status Code in the association
569 * response to the following values returned in resp->statuscode:
570 *
571 * IEEE Status Code Marvell Status Code
572 * 0 -> 0x0000 ASSOC_RESULT_SUCCESS
573 * 13 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED
574 * 14 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED
575 * 15 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED
576 * 16 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED
577 * others -> 0x0003 ASSOC_RESULT_REFUSED
578 *
579 * Other response codes:
580 * 0x0001 -> ASSOC_RESULT_INVALID_PARAMETERS (unused)
581 * 0x0002 -> ASSOC_RESULT_TIMEOUT (internal timer expired waiting for
582 * association response from the AP)
583 */
584
585 status_code = le16_to_cpu(resp->statuscode);
586 if (priv->fwrelease < 0x09000000) {
587 switch (status_code) {
588 case 0x00:
589 break;
590 case 0x01:
591 lbs_deb_assoc("ASSOC_RESP: invalid parameters\n");
592 break;
593 case 0x02:
594 lbs_deb_assoc("ASSOC_RESP: internal timer "
595 "expired while waiting for the AP\n");
596 break;
597 case 0x03:
598 lbs_deb_assoc("ASSOC_RESP: association "
599 "refused by AP\n");
600 break;
601 case 0x04:
602 lbs_deb_assoc("ASSOC_RESP: authentication "
603 "refused by AP\n");
604 break;
605 default:
606 lbs_deb_assoc("ASSOC_RESP: failure reason 0x%02x "
607 " unknown\n", status_code);
608 break;
609 }
610 } else {
611 /* v9+ returns the AP's association response */
612 lbs_deb_assoc("ASSOC_RESP: failure reason 0x%02x\n", status_code);
613 }
614
615 if (status_code) {
616 lbs_mac_event_disconnected(priv);
617 ret = status_code;
618 goto done;
619 }
620
621 lbs_deb_hex(LBS_DEB_ASSOC, "ASSOC_RESP",
622 (void *) (resp + sizeof (resp->hdr)),
623 le16_to_cpu(resp->hdr.size) - sizeof (resp->hdr));
624
625 /* Send a Media Connected event, according to the Spec */
626 priv->connect_status = LBS_CONNECTED;
627
628 /* Update current SSID and BSSID */
629 memcpy(&priv->curbssparams.ssid, &bss->ssid, IEEE80211_MAX_SSID_LEN);
630 priv->curbssparams.ssid_len = bss->ssid_len;
631 memcpy(priv->curbssparams.bssid, bss->bssid, ETH_ALEN);
632
633 priv->SNR[TYPE_RXPD][TYPE_AVG] = 0;
634 priv->NF[TYPE_RXPD][TYPE_AVG] = 0;
635
636 memset(priv->rawSNR, 0x00, sizeof(priv->rawSNR));
637 memset(priv->rawNF, 0x00, sizeof(priv->rawNF));
638 priv->nextSNRNF = 0;
639 priv->numSNRNF = 0;
640
641 netif_carrier_on(priv->dev);
642 if (!priv->tx_pending_len)
643 netif_wake_queue(priv->dev);
644
645 memcpy(wrqu.ap_addr.sa_data, priv->curbssparams.bssid, ETH_ALEN);
646 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
647 wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
648
649done:
650 lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
651 return ret;
652}
653
654/**
655 * @brief This function prepares an association-class command.
656 *
657 * @param priv A pointer to struct lbs_private structure
658 * @param assoc_req The association request describing the BSS to associate
659 * or reassociate with
660 * @param command The actual command, either CMD_802_11_ASSOCIATE or
661 * CMD_802_11_REASSOCIATE
662 *
663 * @return 0 or -1
664 */
665static int lbs_associate(struct lbs_private *priv,
666 struct assoc_request *assoc_req,
667 u16 command)
668{
669 struct cmd_ds_802_11_associate cmd;
670 int ret = 0;
671 struct bss_descriptor *bss = &assoc_req->bss;
672 u8 *pos = &(cmd.iebuf[0]);
673 u16 tmpcap, tmplen, tmpauth;
674 struct mrvl_ie_ssid_param_set *ssid;
675 struct mrvl_ie_ds_param_set *ds;
676 struct mrvl_ie_cf_param_set *cf;
677 struct mrvl_ie_rates_param_set *rates;
678 struct mrvl_ie_rsn_param_set *rsn;
679 struct mrvl_ie_auth_type *auth;
680
681 lbs_deb_enter(LBS_DEB_ASSOC);
682
683 BUG_ON((command != CMD_802_11_ASSOCIATE) &&
684 (command != CMD_802_11_REASSOCIATE));
685
686 memset(&cmd, 0, sizeof(cmd));
687 cmd.hdr.command = cpu_to_le16(command);
688
689 /* Fill in static fields */
690 memcpy(cmd.bssid, bss->bssid, ETH_ALEN);
691 cmd.listeninterval = cpu_to_le16(MRVDRV_DEFAULT_LISTEN_INTERVAL);
692
693 /* Capability info */
694 tmpcap = (bss->capability & CAPINFO_MASK);
695 if (bss->mode == IW_MODE_INFRA)
696 tmpcap |= WLAN_CAPABILITY_ESS;
697 cmd.capability = cpu_to_le16(tmpcap);
698 lbs_deb_assoc("ASSOC_CMD: capability 0x%04x\n", tmpcap);
699
700 /* SSID */
701 ssid = (struct mrvl_ie_ssid_param_set *) pos;
702 ssid->header.type = cpu_to_le16(TLV_TYPE_SSID);
703 tmplen = bss->ssid_len;
704 ssid->header.len = cpu_to_le16(tmplen);
705 memcpy(ssid->ssid, bss->ssid, tmplen);
706 pos += sizeof(ssid->header) + tmplen;
707
708 ds = (struct mrvl_ie_ds_param_set *) pos;
709 ds->header.type = cpu_to_le16(TLV_TYPE_PHY_DS);
710 ds->header.len = cpu_to_le16(1);
711 ds->channel = bss->phy.ds.channel;
712 pos += sizeof(ds->header) + 1;
713
714 cf = (struct mrvl_ie_cf_param_set *) pos;
715 cf->header.type = cpu_to_le16(TLV_TYPE_CF);
716 tmplen = sizeof(*cf) - sizeof (cf->header);
717 cf->header.len = cpu_to_le16(tmplen);
718 /* IE payload should be zeroed, firmware fills it in for us */
719 pos += sizeof(*cf);
720
721 rates = (struct mrvl_ie_rates_param_set *) pos;
722 rates->header.type = cpu_to_le16(TLV_TYPE_RATES);
723 tmplen = min_t(u16, ARRAY_SIZE(bss->rates), MAX_RATES);
724 memcpy(&rates->rates, &bss->rates, tmplen);
725 if (get_common_rates(priv, rates->rates, &tmplen)) {
726 ret = -1;
727 goto done;
728 }
729 pos += sizeof(rates->header) + tmplen;
730 rates->header.len = cpu_to_le16(tmplen);
731 lbs_deb_assoc("ASSOC_CMD: num rates %u\n", tmplen);
732
733 /* Copy the infra. association rates into Current BSS state structure */
734 memset(&priv->curbssparams.rates, 0, sizeof(priv->curbssparams.rates));
735 memcpy(&priv->curbssparams.rates, &rates->rates, tmplen);
736
737 /* Set MSB on basic rates as the firmware requires, but _after_
738 * copying to current bss rates.
739 */
740 lbs_set_basic_rate_flags(rates->rates, tmplen);
741
742 /* Firmware v9+ indicate authentication suites as a TLV */
743 if (priv->fwrelease >= 0x09000000) {
744 auth = (struct mrvl_ie_auth_type *) pos;
745 auth->header.type = cpu_to_le16(TLV_TYPE_AUTH_TYPE);
746 auth->header.len = cpu_to_le16(2);
747 tmpauth = iw_auth_to_ieee_auth(priv->secinfo.auth_mode);
748 auth->auth = cpu_to_le16(tmpauth);
749 pos += sizeof(auth->header) + 2;
750
751 lbs_deb_join("AUTH_CMD: BSSID %pM, auth 0x%x\n",
752 bss->bssid, priv->secinfo.auth_mode);
753 }
754
755 /* WPA/WPA2 IEs */
756 if (assoc_req->secinfo.WPAenabled || assoc_req->secinfo.WPA2enabled) {
757 rsn = (struct mrvl_ie_rsn_param_set *) pos;
758 /* WPA_IE or WPA2_IE */
759 rsn->header.type = cpu_to_le16((u16) assoc_req->wpa_ie[0]);
760 tmplen = (u16) assoc_req->wpa_ie[1];
761 rsn->header.len = cpu_to_le16(tmplen);
762 memcpy(rsn->rsnie, &assoc_req->wpa_ie[2], tmplen);
763 lbs_deb_hex(LBS_DEB_JOIN, "ASSOC_CMD: WPA/RSN IE", (u8 *) rsn,
764 sizeof(rsn->header) + tmplen);
765 pos += sizeof(rsn->header) + tmplen;
766 }
767
768 cmd.hdr.size = cpu_to_le16((sizeof(cmd) - sizeof(cmd.iebuf)) +
769 (u16)(pos - (u8 *) &cmd.iebuf));
770
771 /* update curbssparams */
772 priv->channel = bss->phy.ds.channel;
773
774 ret = lbs_cmd_with_response(priv, command, &cmd);
775 if (ret == 0) {
776 ret = lbs_assoc_post(priv,
777 (struct cmd_ds_802_11_associate_response *) &cmd);
778 }
779
780done:
781 lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
782 return ret;
783}
784
785/**
786 * @brief Associate to a specific BSS discovered in a scan
787 *
788 * @param priv A pointer to struct lbs_private structure
789 * @param assoc_req The association request describing the BSS to associate with
790 *
791 * @return 0-success, otherwise fail
792 */
793static int lbs_try_associate(struct lbs_private *priv,
794 struct assoc_request *assoc_req)
795{
796 int ret;
797 u8 preamble = RADIO_PREAMBLE_LONG;
798
799 lbs_deb_enter(LBS_DEB_ASSOC);
800
801 /* FW v9 and higher indicate authentication suites as a TLV in the
802 * association command, not as a separate authentication command.
803 */
804 if (priv->fwrelease < 0x09000000) {
805 ret = lbs_set_authentication(priv, assoc_req->bss.bssid,
806 priv->secinfo.auth_mode);
807 if (ret)
808 goto out;
809 }
810
811 /* Use short preamble only when both the BSS and firmware support it */
812 if (assoc_req->bss.capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
813 preamble = RADIO_PREAMBLE_SHORT;
814
815 ret = lbs_set_radio(priv, preamble, 1);
816 if (ret)
817 goto out;
818
819 ret = lbs_associate(priv, assoc_req, CMD_802_11_ASSOCIATE);
820 /* If the association fails with current auth mode, let's
821 * try by changing the auth mode
822 */
823 if ((priv->authtype_auto) &&
824 (ret == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG) &&
825 (assoc_req->secinfo.wep_enabled) &&
826 (priv->connect_status != LBS_CONNECTED)) {
827 if (priv->secinfo.auth_mode == IW_AUTH_ALG_OPEN_SYSTEM)
828 priv->secinfo.auth_mode = IW_AUTH_ALG_SHARED_KEY;
829 else
830 priv->secinfo.auth_mode = IW_AUTH_ALG_OPEN_SYSTEM;
831 if (!assoc_helper_wep_keys(priv, assoc_req))
832 ret = lbs_associate(priv, assoc_req,
833 CMD_802_11_ASSOCIATE);
834 }
835
836 if (ret)
837 ret = -1;
838out:
839 lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
840 return ret;
841}
842
843static int lbs_adhoc_post(struct lbs_private *priv,
844 struct cmd_ds_802_11_ad_hoc_result *resp)
845{
846 int ret = 0;
847 u16 command = le16_to_cpu(resp->hdr.command);
848 u16 result = le16_to_cpu(resp->hdr.result);
849 union iwreq_data wrqu;
850 struct bss_descriptor *bss;
851 DECLARE_SSID_BUF(ssid);
852
853 lbs_deb_enter(LBS_DEB_JOIN);
854
855 if (!priv->in_progress_assoc_req) {
856 lbs_deb_join("ADHOC_RESP: no in-progress association "
857 "request\n");
858 ret = -1;
859 goto done;
860 }
861 bss = &priv->in_progress_assoc_req->bss;
862
863 /*
864 * Join result code 0 --> SUCCESS
865 */
866 if (result) {
867 lbs_deb_join("ADHOC_RESP: failed (result 0x%X)\n", result);
868 if (priv->connect_status == LBS_CONNECTED)
869 lbs_mac_event_disconnected(priv);
870 ret = -1;
871 goto done;
872 }
873
874 /* Send a Media Connected event, according to the Spec */
875 priv->connect_status = LBS_CONNECTED;
876
877 if (command == CMD_RET(CMD_802_11_AD_HOC_START)) {
878 /* Update the created network descriptor with the new BSSID */
879 memcpy(bss->bssid, resp->bssid, ETH_ALEN);
880 }
881
882 /* Set the BSSID from the joined/started descriptor */
883 memcpy(&priv->curbssparams.bssid, bss->bssid, ETH_ALEN);
884
885 /* Set the new SSID to current SSID */
886 memcpy(&priv->curbssparams.ssid, &bss->ssid, IEEE80211_MAX_SSID_LEN);
887 priv->curbssparams.ssid_len = bss->ssid_len;
888
889 netif_carrier_on(priv->dev);
890 if (!priv->tx_pending_len)
891 netif_wake_queue(priv->dev);
892
893 memset(&wrqu, 0, sizeof(wrqu));
894 memcpy(wrqu.ap_addr.sa_data, priv->curbssparams.bssid, ETH_ALEN);
895 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
896 wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
897
898 lbs_deb_join("ADHOC_RESP: Joined/started '%s', BSSID %pM, channel %d\n",
899 print_ssid(ssid, bss->ssid, bss->ssid_len),
900 priv->curbssparams.bssid,
901 priv->channel);
902
903done:
904 lbs_deb_leave_args(LBS_DEB_JOIN, "ret %d", ret);
905 return ret;
906}
907
908/**
909 * @brief Join an adhoc network found in a previous scan
910 *
911 * @param priv A pointer to struct lbs_private structure
912 * @param assoc_req The association request describing the BSS to join
913 *
914 * @return 0 on success, error on failure
915 */
916static int lbs_adhoc_join(struct lbs_private *priv,
917 struct assoc_request *assoc_req)
918{
919 struct cmd_ds_802_11_ad_hoc_join cmd;
920 struct bss_descriptor *bss = &assoc_req->bss;
921 u8 preamble = RADIO_PREAMBLE_LONG;
922 DECLARE_SSID_BUF(ssid);
923 u16 ratesize = 0;
924 int ret = 0;
925
926 lbs_deb_enter(LBS_DEB_ASSOC);
927
928 lbs_deb_join("current SSID '%s', ssid length %u\n",
929 print_ssid(ssid, priv->curbssparams.ssid,
930 priv->curbssparams.ssid_len),
931 priv->curbssparams.ssid_len);
932 lbs_deb_join("requested ssid '%s', ssid length %u\n",
933 print_ssid(ssid, bss->ssid, bss->ssid_len),
934 bss->ssid_len);
935
936 /* check if the requested SSID is already joined */
937 if (priv->curbssparams.ssid_len &&
938 !lbs_ssid_cmp(priv->curbssparams.ssid,
939 priv->curbssparams.ssid_len,
940 bss->ssid, bss->ssid_len) &&
941 (priv->mode == IW_MODE_ADHOC) &&
942 (priv->connect_status == LBS_CONNECTED)) {
943 union iwreq_data wrqu;
944
945 lbs_deb_join("ADHOC_J_CMD: New ad-hoc SSID is the same as "
946 "current, not attempting to re-join");
947
948 /* Send the re-association event though, because the association
949 * request really was successful, even if just a null-op.
950 */
951 memset(&wrqu, 0, sizeof(wrqu));
952 memcpy(wrqu.ap_addr.sa_data, priv->curbssparams.bssid,
953 ETH_ALEN);
954 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
955 wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
956 goto out;
957 }
958
959 /* Use short preamble only when both the BSS and firmware support it */
960 if (bss->capability & WLAN_CAPABILITY_SHORT_PREAMBLE) {
961 lbs_deb_join("AdhocJoin: Short preamble\n");
962 preamble = RADIO_PREAMBLE_SHORT;
963 }
964
965 ret = lbs_set_radio(priv, preamble, 1);
966 if (ret)
967 goto out;
968
969 lbs_deb_join("AdhocJoin: channel = %d\n", assoc_req->channel);
970 lbs_deb_join("AdhocJoin: band = %c\n", assoc_req->band);
971
972 priv->adhoccreate = 0;
973 priv->channel = bss->channel;
974
975 /* Build the join command */
976 memset(&cmd, 0, sizeof(cmd));
977 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
978
979 cmd.bss.type = CMD_BSS_TYPE_IBSS;
980 cmd.bss.beaconperiod = cpu_to_le16(bss->beaconperiod);
981
982 memcpy(&cmd.bss.bssid, &bss->bssid, ETH_ALEN);
983 memcpy(&cmd.bss.ssid, &bss->ssid, bss->ssid_len);
984
985 memcpy(&cmd.bss.ds, &bss->phy.ds, sizeof(struct ieee_ie_ds_param_set));
986
987 memcpy(&cmd.bss.ibss, &bss->ss.ibss,
988 sizeof(struct ieee_ie_ibss_param_set));
989
990 cmd.bss.capability = cpu_to_le16(bss->capability & CAPINFO_MASK);
991 lbs_deb_join("ADHOC_J_CMD: tmpcap=%4X CAPINFO_MASK=%4X\n",
992 bss->capability, CAPINFO_MASK);
993
994 /* information on BSSID descriptor passed to FW */
995 lbs_deb_join("ADHOC_J_CMD: BSSID = %pM, SSID = '%s'\n",
996 cmd.bss.bssid, cmd.bss.ssid);
997
998 /* Only v8 and below support setting these */
999 if (priv->fwrelease < 0x09000000) {
1000 /* failtimeout */
1001 cmd.failtimeout = cpu_to_le16(MRVDRV_ASSOCIATION_TIME_OUT);
1002 /* probedelay */
1003 cmd.probedelay = cpu_to_le16(CMD_SCAN_PROBE_DELAY_TIME);
1004 }
1005
1006 /* Copy Data rates from the rates recorded in scan response */
1007 memset(cmd.bss.rates, 0, sizeof(cmd.bss.rates));
1008 ratesize = min_t(u16, ARRAY_SIZE(cmd.bss.rates), ARRAY_SIZE (bss->rates));
1009 memcpy(cmd.bss.rates, bss->rates, ratesize);
1010 if (get_common_rates(priv, cmd.bss.rates, &ratesize)) {
1011 lbs_deb_join("ADHOC_JOIN: get_common_rates returned error.\n");
1012 ret = -1;
1013 goto out;
1014 }
1015
1016 /* Copy the ad-hoc creation rates into Current BSS state structure */
1017 memset(&priv->curbssparams.rates, 0, sizeof(priv->curbssparams.rates));
1018 memcpy(&priv->curbssparams.rates, cmd.bss.rates, ratesize);
1019
1020 /* Set MSB on basic rates as the firmware requires, but _after_
1021 * copying to current bss rates.
1022 */
1023 lbs_set_basic_rate_flags(cmd.bss.rates, ratesize);
1024
1025 cmd.bss.ibss.atimwindow = bss->atimwindow;
1026
1027 if (assoc_req->secinfo.wep_enabled) {
1028 u16 tmp = le16_to_cpu(cmd.bss.capability);
1029 tmp |= WLAN_CAPABILITY_PRIVACY;
1030 cmd.bss.capability = cpu_to_le16(tmp);
1031 }
1032
1033 if (priv->psmode == LBS802_11POWERMODEMAX_PSP) {
1034 __le32 local_ps_mode = cpu_to_le32(LBS802_11POWERMODECAM);
1035
1036 /* wake up first */
1037 ret = lbs_prepare_and_send_command(priv, CMD_802_11_PS_MODE,
1038 CMD_ACT_SET, 0, 0,
1039 &local_ps_mode);
1040 if (ret) {
1041 ret = -1;
1042 goto out;
1043 }
1044 }
1045
1046 ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_JOIN, &cmd);
1047 if (ret == 0) {
1048 ret = lbs_adhoc_post(priv,
1049 (struct cmd_ds_802_11_ad_hoc_result *)&cmd);
1050 }
1051
1052out:
1053 lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
1054 return ret;
1055}
1056
1057/**
1058 * @brief Start an Adhoc Network
1059 *
1060 * @param priv A pointer to struct lbs_private structure
1061 * @param assoc_req The association request describing the BSS to start
1062 *
1063 * @return 0 on success, error on failure
1064 */
1065static int lbs_adhoc_start(struct lbs_private *priv,
1066 struct assoc_request *assoc_req)
1067{
1068 struct cmd_ds_802_11_ad_hoc_start cmd;
1069 u8 preamble = RADIO_PREAMBLE_SHORT;
1070 size_t ratesize = 0;
1071 u16 tmpcap = 0;
1072 int ret = 0;
1073 DECLARE_SSID_BUF(ssid);
1074
1075 lbs_deb_enter(LBS_DEB_ASSOC);
1076
1077 ret = lbs_set_radio(priv, preamble, 1);
1078 if (ret)
1079 goto out;
1080
1081 /* Build the start command */
1082 memset(&cmd, 0, sizeof(cmd));
1083 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1084
1085 memcpy(cmd.ssid, assoc_req->ssid, assoc_req->ssid_len);
1086
1087 lbs_deb_join("ADHOC_START: SSID '%s', ssid length %u\n",
1088 print_ssid(ssid, assoc_req->ssid, assoc_req->ssid_len),
1089 assoc_req->ssid_len);
1090
1091 cmd.bsstype = CMD_BSS_TYPE_IBSS;
1092
1093 if (priv->beacon_period == 0)
1094 priv->beacon_period = MRVDRV_BEACON_INTERVAL;
1095 cmd.beaconperiod = cpu_to_le16(priv->beacon_period);
1096
1097 WARN_ON(!assoc_req->channel);
1098
1099 /* set Physical parameter set */
1100 cmd.ds.header.id = WLAN_EID_DS_PARAMS;
1101 cmd.ds.header.len = 1;
1102 cmd.ds.channel = assoc_req->channel;
1103
1104 /* set IBSS parameter set */
1105 cmd.ibss.header.id = WLAN_EID_IBSS_PARAMS;
1106 cmd.ibss.header.len = 2;
1107 cmd.ibss.atimwindow = cpu_to_le16(0);
1108
1109 /* set capability info */
1110 tmpcap = WLAN_CAPABILITY_IBSS;
1111 if (assoc_req->secinfo.wep_enabled ||
1112 assoc_req->secinfo.WPAenabled ||
1113 assoc_req->secinfo.WPA2enabled) {
1114 lbs_deb_join("ADHOC_START: WEP/WPA enabled, privacy on\n");
1115 tmpcap |= WLAN_CAPABILITY_PRIVACY;
1116 } else
1117 lbs_deb_join("ADHOC_START: WEP disabled, privacy off\n");
1118
1119 cmd.capability = cpu_to_le16(tmpcap);
1120
1121 /* Only v8 and below support setting probe delay */
1122 if (priv->fwrelease < 0x09000000)
1123 cmd.probedelay = cpu_to_le16(CMD_SCAN_PROBE_DELAY_TIME);
1124
1125 ratesize = min(sizeof(cmd.rates), sizeof(lbs_bg_rates));
1126 memcpy(cmd.rates, lbs_bg_rates, ratesize);
1127
1128 /* Copy the ad-hoc creating rates into Current BSS state structure */
1129 memset(&priv->curbssparams.rates, 0, sizeof(priv->curbssparams.rates));
1130 memcpy(&priv->curbssparams.rates, &cmd.rates, ratesize);
1131
1132 /* Set MSB on basic rates as the firmware requires, but _after_
1133 * copying to current bss rates.
1134 */
1135 lbs_set_basic_rate_flags(cmd.rates, ratesize);
1136
1137 lbs_deb_join("ADHOC_START: rates=%02x %02x %02x %02x\n",
1138 cmd.rates[0], cmd.rates[1], cmd.rates[2], cmd.rates[3]);
1139
1140 lbs_deb_join("ADHOC_START: Starting Ad-Hoc BSS on channel %d, band %d\n",
1141 assoc_req->channel, assoc_req->band);
1142
1143 priv->adhoccreate = 1;
1144 priv->mode = IW_MODE_ADHOC;
1145
1146 ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_START, &cmd);
1147 if (ret == 0)
1148 ret = lbs_adhoc_post(priv,
1149 (struct cmd_ds_802_11_ad_hoc_result *)&cmd);
1150
1151out:
1152 lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
1153 return ret;
1154}
1155
1156/**
1157 * @brief Stop and Ad-Hoc network and exit Ad-Hoc mode
1158 *
1159 * @param priv A pointer to struct lbs_private structure
1160 * @return 0 on success, or an error
1161 */
1162int lbs_adhoc_stop(struct lbs_private *priv)
1163{
1164 struct cmd_ds_802_11_ad_hoc_stop cmd;
1165 int ret;
1166
1167 lbs_deb_enter(LBS_DEB_JOIN);
1168
1169 memset(&cmd, 0, sizeof (cmd));
1170 cmd.hdr.size = cpu_to_le16 (sizeof (cmd));
1171
1172 ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_STOP, &cmd);
1173
1174 /* Clean up everything even if there was an error */
1175 lbs_mac_event_disconnected(priv);
1176
1177 lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
1178 return ret;
1179}
1180
1181static inline int match_bss_no_security(struct lbs_802_11_security *secinfo,
1182 struct bss_descriptor *match_bss)
1183{
1184 if (!secinfo->wep_enabled &&
1185 !secinfo->WPAenabled && !secinfo->WPA2enabled &&
1186 match_bss->wpa_ie[0] != WLAN_EID_GENERIC &&
1187 match_bss->rsn_ie[0] != WLAN_EID_RSN &&
1188 !(match_bss->capability & WLAN_CAPABILITY_PRIVACY))
1189 return 1;
1190 else
1191 return 0;
1192}
1193
1194static inline int match_bss_static_wep(struct lbs_802_11_security *secinfo,
1195 struct bss_descriptor *match_bss)
1196{
1197 if (secinfo->wep_enabled &&
1198 !secinfo->WPAenabled && !secinfo->WPA2enabled &&
1199 (match_bss->capability & WLAN_CAPABILITY_PRIVACY))
1200 return 1;
1201 else
1202 return 0;
1203}
1204
1205static inline int match_bss_wpa(struct lbs_802_11_security *secinfo,
1206 struct bss_descriptor *match_bss)
1207{
1208 if (!secinfo->wep_enabled && secinfo->WPAenabled &&
1209 (match_bss->wpa_ie[0] == WLAN_EID_GENERIC)
1210 /* privacy bit may NOT be set in some APs like LinkSys WRT54G
1211 && (match_bss->capability & WLAN_CAPABILITY_PRIVACY) */
1212 )
1213 return 1;
1214 else
1215 return 0;
1216}
1217
1218static inline int match_bss_wpa2(struct lbs_802_11_security *secinfo,
1219 struct bss_descriptor *match_bss)
1220{
1221 if (!secinfo->wep_enabled && secinfo->WPA2enabled &&
1222 (match_bss->rsn_ie[0] == WLAN_EID_RSN)
1223 /* privacy bit may NOT be set in some APs like LinkSys WRT54G
1224 (match_bss->capability & WLAN_CAPABILITY_PRIVACY) */
1225 )
1226 return 1;
1227 else
1228 return 0;
1229}
1230
1231static inline int match_bss_dynamic_wep(struct lbs_802_11_security *secinfo,
1232 struct bss_descriptor *match_bss)
1233{
1234 if (!secinfo->wep_enabled &&
1235 !secinfo->WPAenabled && !secinfo->WPA2enabled &&
1236 (match_bss->wpa_ie[0] != WLAN_EID_GENERIC) &&
1237 (match_bss->rsn_ie[0] != WLAN_EID_RSN) &&
1238 (match_bss->capability & WLAN_CAPABILITY_PRIVACY))
1239 return 1;
1240 else
1241 return 0;
1242}
1243
1244/**
1245 * @brief Check if a scanned network compatible with the driver settings
1246 *
1247 * WEP WPA WPA2 ad-hoc encrypt Network
1248 * enabled enabled enabled AES mode privacy WPA WPA2 Compatible
1249 * 0 0 0 0 NONE 0 0 0 yes No security
1250 * 1 0 0 0 NONE 1 0 0 yes Static WEP
1251 * 0 1 0 0 x 1x 1 x yes WPA
1252 * 0 0 1 0 x 1x x 1 yes WPA2
1253 * 0 0 0 1 NONE 1 0 0 yes Ad-hoc AES
1254 * 0 0 0 0 !=NONE 1 0 0 yes Dynamic WEP
1255 *
1256 *
1257 * @param priv A pointer to struct lbs_private
1258 * @param index Index in scantable to check against current driver settings
1259 * @param mode Network mode: Infrastructure or IBSS
1260 *
1261 * @return Index in scantable, or error code if negative
1262 */
1263static int is_network_compatible(struct lbs_private *priv,
1264 struct bss_descriptor *bss, uint8_t mode)
1265{
1266 int matched = 0;
1267
1268 lbs_deb_enter(LBS_DEB_SCAN);
1269
1270 if (bss->mode != mode)
1271 goto done;
1272
1273 matched = match_bss_no_security(&priv->secinfo, bss);
1274 if (matched)
1275 goto done;
1276 matched = match_bss_static_wep(&priv->secinfo, bss);
1277 if (matched)
1278 goto done;
1279 matched = match_bss_wpa(&priv->secinfo, bss);
1280 if (matched) {
1281 lbs_deb_scan("is_network_compatible() WPA: wpa_ie 0x%x "
1282 "wpa2_ie 0x%x WEP %s WPA %s WPA2 %s "
1283 "privacy 0x%x\n", bss->wpa_ie[0], bss->rsn_ie[0],
1284 priv->secinfo.wep_enabled ? "e" : "d",
1285 priv->secinfo.WPAenabled ? "e" : "d",
1286 priv->secinfo.WPA2enabled ? "e" : "d",
1287 (bss->capability & WLAN_CAPABILITY_PRIVACY));
1288 goto done;
1289 }
1290 matched = match_bss_wpa2(&priv->secinfo, bss);
1291 if (matched) {
1292 lbs_deb_scan("is_network_compatible() WPA2: wpa_ie 0x%x "
1293 "wpa2_ie 0x%x WEP %s WPA %s WPA2 %s "
1294 "privacy 0x%x\n", bss->wpa_ie[0], bss->rsn_ie[0],
1295 priv->secinfo.wep_enabled ? "e" : "d",
1296 priv->secinfo.WPAenabled ? "e" : "d",
1297 priv->secinfo.WPA2enabled ? "e" : "d",
1298 (bss->capability & WLAN_CAPABILITY_PRIVACY));
1299 goto done;
1300 }
1301 matched = match_bss_dynamic_wep(&priv->secinfo, bss);
1302 if (matched) {
1303 lbs_deb_scan("is_network_compatible() dynamic WEP: "
1304 "wpa_ie 0x%x wpa2_ie 0x%x privacy 0x%x\n",
1305 bss->wpa_ie[0], bss->rsn_ie[0],
1306 (bss->capability & WLAN_CAPABILITY_PRIVACY));
1307 goto done;
1308 }
1309
1310 /* bss security settings don't match those configured on card */
1311 lbs_deb_scan("is_network_compatible() FAILED: wpa_ie 0x%x "
1312 "wpa2_ie 0x%x WEP %s WPA %s WPA2 %s privacy 0x%x\n",
1313 bss->wpa_ie[0], bss->rsn_ie[0],
1314 priv->secinfo.wep_enabled ? "e" : "d",
1315 priv->secinfo.WPAenabled ? "e" : "d",
1316 priv->secinfo.WPA2enabled ? "e" : "d",
1317 (bss->capability & WLAN_CAPABILITY_PRIVACY));
1318
1319done:
1320 lbs_deb_leave_args(LBS_DEB_SCAN, "matched: %d", matched);
1321 return matched;
1322}
1323
1324/**
1325 * @brief This function finds a specific compatible BSSID in the scan list
1326 *
1327 * Used in association code
1328 *
1329 * @param priv A pointer to struct lbs_private
1330 * @param bssid BSSID to find in the scan list
1331 * @param mode Network mode: Infrastructure or IBSS
1332 *
1333 * @return index in BSSID list, or error return code (< 0)
1334 */
1335static struct bss_descriptor *lbs_find_bssid_in_list(struct lbs_private *priv,
1336 uint8_t *bssid, uint8_t mode)
1337{
1338 struct bss_descriptor *iter_bss;
1339 struct bss_descriptor *found_bss = NULL;
1340
1341 lbs_deb_enter(LBS_DEB_SCAN);
1342
1343 if (!bssid)
1344 goto out;
1345
1346 lbs_deb_hex(LBS_DEB_SCAN, "looking for", bssid, ETH_ALEN);
1347
1348 /* Look through the scan table for a compatible match. The loop will
1349 * continue past a matched bssid that is not compatible in case there
1350 * is an AP with multiple SSIDs assigned to the same BSSID
1351 */
1352 mutex_lock(&priv->lock);
1353 list_for_each_entry(iter_bss, &priv->network_list, list) {
1354 if (compare_ether_addr(iter_bss->bssid, bssid))
1355 continue; /* bssid doesn't match */
1356 switch (mode) {
1357 case IW_MODE_INFRA:
1358 case IW_MODE_ADHOC:
1359 if (!is_network_compatible(priv, iter_bss, mode))
1360 break;
1361 found_bss = iter_bss;
1362 break;
1363 default:
1364 found_bss = iter_bss;
1365 break;
1366 }
1367 }
1368 mutex_unlock(&priv->lock);
1369
1370out:
1371 lbs_deb_leave_args(LBS_DEB_SCAN, "found_bss %p", found_bss);
1372 return found_bss;
1373}
1374
1375/**
1376 * @brief This function finds ssid in ssid list.
1377 *
1378 * Used in association code
1379 *
1380 * @param priv A pointer to struct lbs_private
1381 * @param ssid SSID to find in the list
1382 * @param bssid BSSID to qualify the SSID selection (if provided)
1383 * @param mode Network mode: Infrastructure or IBSS
1384 *
1385 * @return index in BSSID list
1386 */
1387static struct bss_descriptor *lbs_find_ssid_in_list(struct lbs_private *priv,
1388 uint8_t *ssid, uint8_t ssid_len,
1389 uint8_t *bssid, uint8_t mode,
1390 int channel)
1391{
1392 u32 bestrssi = 0;
1393 struct bss_descriptor *iter_bss = NULL;
1394 struct bss_descriptor *found_bss = NULL;
1395 struct bss_descriptor *tmp_oldest = NULL;
1396
1397 lbs_deb_enter(LBS_DEB_SCAN);
1398
1399 mutex_lock(&priv->lock);
1400
1401 list_for_each_entry(iter_bss, &priv->network_list, list) {
1402 if (!tmp_oldest ||
1403 (iter_bss->last_scanned < tmp_oldest->last_scanned))
1404 tmp_oldest = iter_bss;
1405
1406 if (lbs_ssid_cmp(iter_bss->ssid, iter_bss->ssid_len,
1407 ssid, ssid_len) != 0)
1408 continue; /* ssid doesn't match */
1409 if (bssid && compare_ether_addr(iter_bss->bssid, bssid) != 0)
1410 continue; /* bssid doesn't match */
1411 if ((channel > 0) && (iter_bss->channel != channel))
1412 continue; /* channel doesn't match */
1413
1414 switch (mode) {
1415 case IW_MODE_INFRA:
1416 case IW_MODE_ADHOC:
1417 if (!is_network_compatible(priv, iter_bss, mode))
1418 break;
1419
1420 if (bssid) {
1421 /* Found requested BSSID */
1422 found_bss = iter_bss;
1423 goto out;
1424 }
1425
1426 if (SCAN_RSSI(iter_bss->rssi) > bestrssi) {
1427 bestrssi = SCAN_RSSI(iter_bss->rssi);
1428 found_bss = iter_bss;
1429 }
1430 break;
1431 case IW_MODE_AUTO:
1432 default:
1433 if (SCAN_RSSI(iter_bss->rssi) > bestrssi) {
1434 bestrssi = SCAN_RSSI(iter_bss->rssi);
1435 found_bss = iter_bss;
1436 }
1437 break;
1438 }
1439 }
1440
1441out:
1442 mutex_unlock(&priv->lock);
1443 lbs_deb_leave_args(LBS_DEB_SCAN, "found_bss %p", found_bss);
1444 return found_bss;
1445}
1446
1447static int assoc_helper_essid(struct lbs_private *priv,
1448 struct assoc_request * assoc_req)
1449{
1450 int ret = 0;
1451 struct bss_descriptor * bss;
1452 int channel = -1;
1453 DECLARE_SSID_BUF(ssid);
1454
1455 lbs_deb_enter(LBS_DEB_ASSOC);
1456
1457 /* FIXME: take channel into account when picking SSIDs if a channel
1458 * is set.
1459 */
1460
1461 if (test_bit(ASSOC_FLAG_CHANNEL, &assoc_req->flags))
1462 channel = assoc_req->channel;
1463
1464 lbs_deb_assoc("SSID '%s' requested\n",
1465 print_ssid(ssid, assoc_req->ssid, assoc_req->ssid_len));
1466 if (assoc_req->mode == IW_MODE_INFRA) {
1467 lbs_send_specific_ssid_scan(priv, assoc_req->ssid,
1468 assoc_req->ssid_len);
1469
1470 bss = lbs_find_ssid_in_list(priv, assoc_req->ssid,
1471 assoc_req->ssid_len, NULL, IW_MODE_INFRA, channel);
1472 if (bss != NULL) {
1473 memcpy(&assoc_req->bss, bss, sizeof(struct bss_descriptor));
1474 ret = lbs_try_associate(priv, assoc_req);
1475 } else {
1476 lbs_deb_assoc("SSID not found; cannot associate\n");
1477 }
1478 } else if (assoc_req->mode == IW_MODE_ADHOC) {
1479 /* Scan for the network, do not save previous results. Stale
1480 * scan data will cause us to join a non-existant adhoc network
1481 */
1482 lbs_send_specific_ssid_scan(priv, assoc_req->ssid,
1483 assoc_req->ssid_len);
1484
1485 /* Search for the requested SSID in the scan table */
1486 bss = lbs_find_ssid_in_list(priv, assoc_req->ssid,
1487 assoc_req->ssid_len, NULL, IW_MODE_ADHOC, channel);
1488 if (bss != NULL) {
1489 lbs_deb_assoc("SSID found, will join\n");
1490 memcpy(&assoc_req->bss, bss, sizeof(struct bss_descriptor));
1491 lbs_adhoc_join(priv, assoc_req);
1492 } else {
1493 /* else send START command */
1494 lbs_deb_assoc("SSID not found, creating adhoc network\n");
1495 memcpy(&assoc_req->bss.ssid, &assoc_req->ssid,
1496 IEEE80211_MAX_SSID_LEN);
1497 assoc_req->bss.ssid_len = assoc_req->ssid_len;
1498 lbs_adhoc_start(priv, assoc_req);
1499 }
1500 }
1501
1502 lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
1503 return ret;
1504}
1505
1506
1507static int assoc_helper_bssid(struct lbs_private *priv,
1508 struct assoc_request * assoc_req)
1509{
1510 int ret = 0;
1511 struct bss_descriptor * bss;
1512
1513 lbs_deb_enter_args(LBS_DEB_ASSOC, "BSSID %pM", assoc_req->bssid);
1514
1515 /* Search for index position in list for requested MAC */
1516 bss = lbs_find_bssid_in_list(priv, assoc_req->bssid,
1517 assoc_req->mode);
1518 if (bss == NULL) {
1519 lbs_deb_assoc("ASSOC: WAP: BSSID %pM not found, "
1520 "cannot associate.\n", assoc_req->bssid);
1521 goto out;
1522 }
1523
1524 memcpy(&assoc_req->bss, bss, sizeof(struct bss_descriptor));
1525 if (assoc_req->mode == IW_MODE_INFRA) {
1526 ret = lbs_try_associate(priv, assoc_req);
1527 lbs_deb_assoc("ASSOC: lbs_try_associate(bssid) returned %d\n",
1528 ret);
1529 } else if (assoc_req->mode == IW_MODE_ADHOC) {
1530 lbs_adhoc_join(priv, assoc_req);
1531 }
1532
1533out:
1534 lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
1535 return ret;
1536}
1537
1538
1539static int assoc_helper_associate(struct lbs_private *priv,
1540 struct assoc_request * assoc_req)
1541{
1542 int ret = 0, done = 0;
1543
1544 lbs_deb_enter(LBS_DEB_ASSOC);
1545
1546 /* If we're given and 'any' BSSID, try associating based on SSID */
1547
1548 if (test_bit(ASSOC_FLAG_BSSID, &assoc_req->flags)) {
1549 if (compare_ether_addr(bssid_any, assoc_req->bssid) &&
1550 compare_ether_addr(bssid_off, assoc_req->bssid)) {
1551 ret = assoc_helper_bssid(priv, assoc_req);
1552 done = 1;
1553 }
1554 }
1555
1556 if (!done && test_bit(ASSOC_FLAG_SSID, &assoc_req->flags)) {
1557 ret = assoc_helper_essid(priv, assoc_req);
1558 }
1559
1560 lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
1561 return ret;
1562}
1563
1564
1565static int assoc_helper_mode(struct lbs_private *priv,
1566 struct assoc_request * assoc_req)
1567{
1568 int ret = 0;
1569
1570 lbs_deb_enter(LBS_DEB_ASSOC);
1571
1572 if (assoc_req->mode == priv->mode)
1573 goto done;
1574
1575 if (assoc_req->mode == IW_MODE_INFRA) {
1576 if (priv->psstate != PS_STATE_FULL_POWER)
1577 lbs_ps_wakeup(priv, CMD_OPTION_WAITFORRSP);
1578 priv->psmode = LBS802_11POWERMODECAM;
1579 }
1580
1581 priv->mode = assoc_req->mode;
1582 ret = lbs_set_snmp_mib(priv, SNMP_MIB_OID_BSS_TYPE,
1583 assoc_req->mode == IW_MODE_ADHOC ? 2 : 1);
1584
1585done:
1586 lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
1587 return ret;
1588}
1589
1590static int assoc_helper_channel(struct lbs_private *priv,
1591 struct assoc_request * assoc_req)
1592{
1593 int ret = 0;
1594
1595 lbs_deb_enter(LBS_DEB_ASSOC);
1596
1597 ret = lbs_update_channel(priv);
1598 if (ret) {
1599 lbs_deb_assoc("ASSOC: channel: error getting channel.\n");
1600 goto done;
1601 }
1602
1603 if (assoc_req->channel == priv->channel)
1604 goto done;
1605
1606 if (priv->mesh_dev) {
1607 /* Change mesh channel first; 21.p21 firmware won't let
1608 you change channel otherwise (even though it'll return
1609 an error to this */
1610 lbs_mesh_config(priv, CMD_ACT_MESH_CONFIG_STOP,
1611 assoc_req->channel);
1612 }
1613
1614 lbs_deb_assoc("ASSOC: channel: %d -> %d\n",
1615 priv->channel, assoc_req->channel);
1616
1617 ret = lbs_set_channel(priv, assoc_req->channel);
1618 if (ret < 0)
1619 lbs_deb_assoc("ASSOC: channel: error setting channel.\n");
1620
1621 /* FIXME: shouldn't need to grab the channel _again_ after setting
1622 * it since the firmware is supposed to return the new channel, but
1623 * whatever... */
1624 ret = lbs_update_channel(priv);
1625 if (ret) {
1626 lbs_deb_assoc("ASSOC: channel: error getting channel.\n");
1627 goto done;
1628 }
1629
1630 if (assoc_req->channel != priv->channel) {
1631 lbs_deb_assoc("ASSOC: channel: failed to update channel to %d\n",
1632 assoc_req->channel);
1633 goto restore_mesh;
1634 }
1635
1636 if (assoc_req->secinfo.wep_enabled &&
1637 (assoc_req->wep_keys[0].len || assoc_req->wep_keys[1].len ||
1638 assoc_req->wep_keys[2].len || assoc_req->wep_keys[3].len)) {
1639 /* Make sure WEP keys are re-sent to firmware */
1640 set_bit(ASSOC_FLAG_WEP_KEYS, &assoc_req->flags);
1641 }
1642
1643 /* Must restart/rejoin adhoc networks after channel change */
1644 set_bit(ASSOC_FLAG_SSID, &assoc_req->flags);
1645
1646 restore_mesh:
1647 if (priv->mesh_dev)
1648 lbs_mesh_config(priv, CMD_ACT_MESH_CONFIG_START,
1649 priv->channel);
1650
1651 done:
1652 lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
1653 return ret;
1654}
1655
1656
1657static int assoc_helper_wep_keys(struct lbs_private *priv,
1658 struct assoc_request *assoc_req)
1659{
1660 int i;
1661 int ret = 0;
1662
1663 lbs_deb_enter(LBS_DEB_ASSOC);
1664
1665 /* Set or remove WEP keys */
1666 if (assoc_req->wep_keys[0].len || assoc_req->wep_keys[1].len ||
1667 assoc_req->wep_keys[2].len || assoc_req->wep_keys[3].len)
1668 ret = lbs_cmd_802_11_set_wep(priv, CMD_ACT_ADD, assoc_req);
1669 else
1670 ret = lbs_cmd_802_11_set_wep(priv, CMD_ACT_REMOVE, assoc_req);
1671
1672 if (ret)
1673 goto out;
1674
1675 /* enable/disable the MAC's WEP packet filter */
1676 if (assoc_req->secinfo.wep_enabled)
1677 priv->mac_control |= CMD_ACT_MAC_WEP_ENABLE;
1678 else
1679 priv->mac_control &= ~CMD_ACT_MAC_WEP_ENABLE;
1680
1681 lbs_set_mac_control(priv);
1682
1683 mutex_lock(&priv->lock);
1684
1685 /* Copy WEP keys into priv wep key fields */
1686 for (i = 0; i < 4; i++) {
1687 memcpy(&priv->wep_keys[i], &assoc_req->wep_keys[i],
1688 sizeof(struct enc_key));
1689 }
1690 priv->wep_tx_keyidx = assoc_req->wep_tx_keyidx;
1691
1692 mutex_unlock(&priv->lock);
1693
1694out:
1695 lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
1696 return ret;
1697}
1698
1699static int assoc_helper_secinfo(struct lbs_private *priv,
1700 struct assoc_request * assoc_req)
1701{
1702 int ret = 0;
1703 uint16_t do_wpa;
1704 uint16_t rsn = 0;
1705
1706 lbs_deb_enter(LBS_DEB_ASSOC);
1707
1708 memcpy(&priv->secinfo, &assoc_req->secinfo,
1709 sizeof(struct lbs_802_11_security));
1710
1711 lbs_set_mac_control(priv);
1712
1713 /* If RSN is already enabled, don't try to enable it again, since
1714 * ENABLE_RSN resets internal state machines and will clobber the
1715 * 4-way WPA handshake.
1716 */
1717
1718 /* Get RSN enabled/disabled */
1719 ret = lbs_cmd_802_11_enable_rsn(priv, CMD_ACT_GET, &rsn);
1720 if (ret) {
1721 lbs_deb_assoc("Failed to get RSN status: %d\n", ret);
1722 goto out;
1723 }
1724
1725 /* Don't re-enable RSN if it's already enabled */
1726 do_wpa = assoc_req->secinfo.WPAenabled || assoc_req->secinfo.WPA2enabled;
1727 if (do_wpa == rsn)
1728 goto out;
1729
1730 /* Set RSN enabled/disabled */
1731 ret = lbs_cmd_802_11_enable_rsn(priv, CMD_ACT_SET, &do_wpa);
1732
1733out:
1734 lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
1735 return ret;
1736}
1737
1738
1739static int assoc_helper_wpa_keys(struct lbs_private *priv,
1740 struct assoc_request * assoc_req)
1741{
1742 int ret = 0;
1743 unsigned int flags = assoc_req->flags;
1744
1745 lbs_deb_enter(LBS_DEB_ASSOC);
1746
1747 /* Work around older firmware bug where WPA unicast and multicast
1748 * keys must be set independently. Seen in SDIO parts with firmware
1749 * version 5.0.11p0.
1750 */
1751
1752 if (test_bit(ASSOC_FLAG_WPA_UCAST_KEY, &assoc_req->flags)) {
1753 clear_bit(ASSOC_FLAG_WPA_MCAST_KEY, &assoc_req->flags);
1754 ret = lbs_cmd_802_11_key_material(priv, CMD_ACT_SET, assoc_req);
1755 assoc_req->flags = flags;
1756 }
1757
1758 if (ret)
1759 goto out;
1760
1761 memcpy(&priv->wpa_unicast_key, &assoc_req->wpa_unicast_key,
1762 sizeof(struct enc_key));
1763
1764 if (test_bit(ASSOC_FLAG_WPA_MCAST_KEY, &assoc_req->flags)) {
1765 clear_bit(ASSOC_FLAG_WPA_UCAST_KEY, &assoc_req->flags);
1766
1767 ret = lbs_cmd_802_11_key_material(priv, CMD_ACT_SET, assoc_req);
1768 assoc_req->flags = flags;
1769
1770 memcpy(&priv->wpa_mcast_key, &assoc_req->wpa_mcast_key,
1771 sizeof(struct enc_key));
1772 }
1773
1774out:
1775 lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
1776 return ret;
1777}
1778
1779
1780static int assoc_helper_wpa_ie(struct lbs_private *priv,
1781 struct assoc_request * assoc_req)
1782{
1783 int ret = 0;
1784
1785 lbs_deb_enter(LBS_DEB_ASSOC);
1786
1787 if (assoc_req->secinfo.WPAenabled || assoc_req->secinfo.WPA2enabled) {
1788 memcpy(&priv->wpa_ie, &assoc_req->wpa_ie, assoc_req->wpa_ie_len);
1789 priv->wpa_ie_len = assoc_req->wpa_ie_len;
1790 } else {
1791 memset(&priv->wpa_ie, 0, MAX_WPA_IE_LEN);
1792 priv->wpa_ie_len = 0;
1793 }
1794
1795 lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
1796 return ret;
1797}
1798
1799
1800static int should_deauth_infrastructure(struct lbs_private *priv,
1801 struct assoc_request * assoc_req)
1802{
1803 int ret = 0;
1804
1805 if (priv->connect_status != LBS_CONNECTED)
1806 return 0;
1807
1808 lbs_deb_enter(LBS_DEB_ASSOC);
1809 if (test_bit(ASSOC_FLAG_SSID, &assoc_req->flags)) {
1810 lbs_deb_assoc("Deauthenticating due to new SSID\n");
1811 ret = 1;
1812 goto out;
1813 }
1814
1815 if (test_bit(ASSOC_FLAG_SECINFO, &assoc_req->flags)) {
1816 if (priv->secinfo.auth_mode != assoc_req->secinfo.auth_mode) {
1817 lbs_deb_assoc("Deauthenticating due to new security\n");
1818 ret = 1;
1819 goto out;
1820 }
1821 }
1822
1823 if (test_bit(ASSOC_FLAG_BSSID, &assoc_req->flags)) {
1824 lbs_deb_assoc("Deauthenticating due to new BSSID\n");
1825 ret = 1;
1826 goto out;
1827 }
1828
1829 if (test_bit(ASSOC_FLAG_CHANNEL, &assoc_req->flags)) {
1830 lbs_deb_assoc("Deauthenticating due to channel switch\n");
1831 ret = 1;
1832 goto out;
1833 }
1834
1835 /* FIXME: deal with 'auto' mode somehow */
1836 if (test_bit(ASSOC_FLAG_MODE, &assoc_req->flags)) {
1837 if (assoc_req->mode != IW_MODE_INFRA) {
1838 lbs_deb_assoc("Deauthenticating due to leaving "
1839 "infra mode\n");
1840 ret = 1;
1841 goto out;
1842 }
1843 }
1844
1845out:
1846 lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
1847 return ret;
1848}
1849
1850
1851static int should_stop_adhoc(struct lbs_private *priv,
1852 struct assoc_request * assoc_req)
1853{
1854 lbs_deb_enter(LBS_DEB_ASSOC);
1855
1856 if (priv->connect_status != LBS_CONNECTED)
1857 return 0;
1858
1859 if (lbs_ssid_cmp(priv->curbssparams.ssid,
1860 priv->curbssparams.ssid_len,
1861 assoc_req->ssid, assoc_req->ssid_len) != 0)
1862 return 1;
1863
1864 /* FIXME: deal with 'auto' mode somehow */
1865 if (test_bit(ASSOC_FLAG_MODE, &assoc_req->flags)) {
1866 if (assoc_req->mode != IW_MODE_ADHOC)
1867 return 1;
1868 }
1869
1870 if (test_bit(ASSOC_FLAG_CHANNEL, &assoc_req->flags)) {
1871 if (assoc_req->channel != priv->channel)
1872 return 1;
1873 }
1874
1875 lbs_deb_leave(LBS_DEB_ASSOC);
1876 return 0;
1877}
1878
1879
1880/**
1881 * @brief This function finds the best SSID in the Scan List
1882 *
1883 * Search the scan table for the best SSID that also matches the current
1884 * adapter network preference (infrastructure or adhoc)
1885 *
1886 * @param priv A pointer to struct lbs_private
1887 *
1888 * @return index in BSSID list
1889 */
1890static struct bss_descriptor *lbs_find_best_ssid_in_list(
1891 struct lbs_private *priv, uint8_t mode)
1892{
1893 uint8_t bestrssi = 0;
1894 struct bss_descriptor *iter_bss;
1895 struct bss_descriptor *best_bss = NULL;
1896
1897 lbs_deb_enter(LBS_DEB_SCAN);
1898
1899 mutex_lock(&priv->lock);
1900
1901 list_for_each_entry(iter_bss, &priv->network_list, list) {
1902 switch (mode) {
1903 case IW_MODE_INFRA:
1904 case IW_MODE_ADHOC:
1905 if (!is_network_compatible(priv, iter_bss, mode))
1906 break;
1907 if (SCAN_RSSI(iter_bss->rssi) <= bestrssi)
1908 break;
1909 bestrssi = SCAN_RSSI(iter_bss->rssi);
1910 best_bss = iter_bss;
1911 break;
1912 case IW_MODE_AUTO:
1913 default:
1914 if (SCAN_RSSI(iter_bss->rssi) <= bestrssi)
1915 break;
1916 bestrssi = SCAN_RSSI(iter_bss->rssi);
1917 best_bss = iter_bss;
1918 break;
1919 }
1920 }
1921
1922 mutex_unlock(&priv->lock);
1923 lbs_deb_leave_args(LBS_DEB_SCAN, "best_bss %p", best_bss);
1924 return best_bss;
1925}
1926
1927/**
1928 * @brief Find the best AP
1929 *
1930 * Used from association worker.
1931 *
1932 * @param priv A pointer to struct lbs_private structure
1933 * @param pSSID A pointer to AP's ssid
1934 *
1935 * @return 0--success, otherwise--fail
1936 */
1937static int lbs_find_best_network_ssid(struct lbs_private *priv,
1938 uint8_t *out_ssid, uint8_t *out_ssid_len, uint8_t preferred_mode,
1939 uint8_t *out_mode)
1940{
1941 int ret = -1;
1942 struct bss_descriptor *found;
1943
1944 lbs_deb_enter(LBS_DEB_SCAN);
1945
1946 priv->scan_ssid_len = 0;
1947 lbs_scan_networks(priv, 1);
1948 if (priv->surpriseremoved)
1949 goto out;
1950
1951 found = lbs_find_best_ssid_in_list(priv, preferred_mode);
1952 if (found && (found->ssid_len > 0)) {
1953 memcpy(out_ssid, &found->ssid, IEEE80211_MAX_SSID_LEN);
1954 *out_ssid_len = found->ssid_len;
1955 *out_mode = found->mode;
1956 ret = 0;
1957 }
1958
1959out:
1960 lbs_deb_leave_args(LBS_DEB_SCAN, "ret %d", ret);
1961 return ret;
1962}
1963
1964
1965void lbs_association_worker(struct work_struct *work)
1966{
1967 struct lbs_private *priv = container_of(work, struct lbs_private,
1968 assoc_work.work);
1969 struct assoc_request * assoc_req = NULL;
1970 int ret = 0;
1971 int find_any_ssid = 0;
1972 DECLARE_SSID_BUF(ssid);
1973
1974 lbs_deb_enter(LBS_DEB_ASSOC);
1975
1976 mutex_lock(&priv->lock);
1977 assoc_req = priv->pending_assoc_req;
1978 priv->pending_assoc_req = NULL;
1979 priv->in_progress_assoc_req = assoc_req;
1980 mutex_unlock(&priv->lock);
1981
1982 if (!assoc_req)
1983 goto done;
1984
1985 lbs_deb_assoc(
1986 "Association Request:\n"
1987 " flags: 0x%08lx\n"
1988 " SSID: '%s'\n"
1989 " chann: %d\n"
1990 " band: %d\n"
1991 " mode: %d\n"
1992 " BSSID: %pM\n"
1993 " secinfo: %s%s%s\n"
1994 " auth_mode: %d\n",
1995 assoc_req->flags,
1996 print_ssid(ssid, assoc_req->ssid, assoc_req->ssid_len),
1997 assoc_req->channel, assoc_req->band, assoc_req->mode,
1998 assoc_req->bssid,
1999 assoc_req->secinfo.WPAenabled ? " WPA" : "",
2000 assoc_req->secinfo.WPA2enabled ? " WPA2" : "",
2001 assoc_req->secinfo.wep_enabled ? " WEP" : "",
2002 assoc_req->secinfo.auth_mode);
2003
2004 /* If 'any' SSID was specified, find an SSID to associate with */
2005 if (test_bit(ASSOC_FLAG_SSID, &assoc_req->flags) &&
2006 !assoc_req->ssid_len)
2007 find_any_ssid = 1;
2008
2009 /* But don't use 'any' SSID if there's a valid locked BSSID to use */
2010 if (test_bit(ASSOC_FLAG_BSSID, &assoc_req->flags)) {
2011 if (compare_ether_addr(assoc_req->bssid, bssid_any) &&
2012 compare_ether_addr(assoc_req->bssid, bssid_off))
2013 find_any_ssid = 0;
2014 }
2015
2016 if (find_any_ssid) {
2017 u8 new_mode = assoc_req->mode;
2018
2019 ret = lbs_find_best_network_ssid(priv, assoc_req->ssid,
2020 &assoc_req->ssid_len, assoc_req->mode, &new_mode);
2021 if (ret) {
2022 lbs_deb_assoc("Could not find best network\n");
2023 ret = -ENETUNREACH;
2024 goto out;
2025 }
2026
2027 /* Ensure we switch to the mode of the AP */
2028 if (assoc_req->mode == IW_MODE_AUTO) {
2029 set_bit(ASSOC_FLAG_MODE, &assoc_req->flags);
2030 assoc_req->mode = new_mode;
2031 }
2032 }
2033
2034 /*
2035 * Check if the attributes being changing require deauthentication
2036 * from the currently associated infrastructure access point.
2037 */
2038 if (priv->mode == IW_MODE_INFRA) {
2039 if (should_deauth_infrastructure(priv, assoc_req)) {
2040 ret = lbs_cmd_80211_deauthenticate(priv,
2041 priv->curbssparams.bssid,
2042 WLAN_REASON_DEAUTH_LEAVING);
2043 if (ret) {
2044 lbs_deb_assoc("Deauthentication due to new "
2045 "configuration request failed: %d\n",
2046 ret);
2047 }
2048 }
2049 } else if (priv->mode == IW_MODE_ADHOC) {
2050 if (should_stop_adhoc(priv, assoc_req)) {
2051 ret = lbs_adhoc_stop(priv);
2052 if (ret) {
2053 lbs_deb_assoc("Teardown of AdHoc network due to "
2054 "new configuration request failed: %d\n",
2055 ret);
2056 }
2057
2058 }
2059 }
2060
2061 /* Send the various configuration bits to the firmware */
2062 if (test_bit(ASSOC_FLAG_MODE, &assoc_req->flags)) {
2063 ret = assoc_helper_mode(priv, assoc_req);
2064 if (ret)
2065 goto out;
2066 }
2067
2068 if (test_bit(ASSOC_FLAG_CHANNEL, &assoc_req->flags)) {
2069 ret = assoc_helper_channel(priv, assoc_req);
2070 if (ret)
2071 goto out;
2072 }
2073
2074 if (test_bit(ASSOC_FLAG_SECINFO, &assoc_req->flags)) {
2075 ret = assoc_helper_secinfo(priv, assoc_req);
2076 if (ret)
2077 goto out;
2078 }
2079
2080 if (test_bit(ASSOC_FLAG_WPA_IE, &assoc_req->flags)) {
2081 ret = assoc_helper_wpa_ie(priv, assoc_req);
2082 if (ret)
2083 goto out;
2084 }
2085
2086 /*
2087 * v10 FW wants WPA keys to be set/cleared before WEP key operations,
2088 * otherwise it will fail to correctly associate to WEP networks.
2089 * Other firmware versions don't appear to care.
2090 */
2091 if (test_bit(ASSOC_FLAG_WPA_MCAST_KEY, &assoc_req->flags) ||
2092 test_bit(ASSOC_FLAG_WPA_UCAST_KEY, &assoc_req->flags)) {
2093 ret = assoc_helper_wpa_keys(priv, assoc_req);
2094 if (ret)
2095 goto out;
2096 }
2097
2098 if (test_bit(ASSOC_FLAG_WEP_KEYS, &assoc_req->flags) ||
2099 test_bit(ASSOC_FLAG_WEP_TX_KEYIDX, &assoc_req->flags)) {
2100 ret = assoc_helper_wep_keys(priv, assoc_req);
2101 if (ret)
2102 goto out;
2103 }
2104
2105
2106 /* SSID/BSSID should be the _last_ config option set, because they
2107 * trigger the association attempt.
2108 */
2109 if (test_bit(ASSOC_FLAG_BSSID, &assoc_req->flags) ||
2110 test_bit(ASSOC_FLAG_SSID, &assoc_req->flags)) {
2111 int success = 1;
2112
2113 ret = assoc_helper_associate(priv, assoc_req);
2114 if (ret) {
2115 lbs_deb_assoc("ASSOC: association unsuccessful: %d\n",
2116 ret);
2117 success = 0;
2118 }
2119
2120 if (priv->connect_status != LBS_CONNECTED) {
2121 lbs_deb_assoc("ASSOC: association unsuccessful, "
2122 "not connected\n");
2123 success = 0;
2124 }
2125
2126 if (success) {
2127 lbs_deb_assoc("associated to %pM\n",
2128 priv->curbssparams.bssid);
2129 lbs_prepare_and_send_command(priv,
2130 CMD_802_11_RSSI,
2131 0, CMD_OPTION_WAITFORRSP, 0, NULL);
2132 } else {
2133 ret = -1;
2134 }
2135 }
2136
2137out:
2138 if (ret) {
2139 lbs_deb_assoc("ASSOC: reconfiguration attempt unsuccessful: %d\n",
2140 ret);
2141 }
2142
2143 mutex_lock(&priv->lock);
2144 priv->in_progress_assoc_req = NULL;
2145 mutex_unlock(&priv->lock);
2146 kfree(assoc_req);
2147
2148done:
2149 lbs_deb_leave(LBS_DEB_ASSOC);
2150}
2151
2152
2153/*
2154 * Caller MUST hold any necessary locks
2155 */
2156struct assoc_request *lbs_get_association_request(struct lbs_private *priv)
2157{
2158 struct assoc_request * assoc_req;
2159
2160 lbs_deb_enter(LBS_DEB_ASSOC);
2161 if (!priv->pending_assoc_req) {
2162 priv->pending_assoc_req = kzalloc(sizeof(struct assoc_request),
2163 GFP_KERNEL);
2164 if (!priv->pending_assoc_req) {
2165 lbs_pr_info("Not enough memory to allocate association"
2166 " request!\n");
2167 return NULL;
2168 }
2169 }
2170
2171 /* Copy current configuration attributes to the association request,
2172 * but don't overwrite any that are already set.
2173 */
2174 assoc_req = priv->pending_assoc_req;
2175 if (!test_bit(ASSOC_FLAG_SSID, &assoc_req->flags)) {
2176 memcpy(&assoc_req->ssid, &priv->curbssparams.ssid,
2177 IEEE80211_MAX_SSID_LEN);
2178 assoc_req->ssid_len = priv->curbssparams.ssid_len;
2179 }
2180
2181 if (!test_bit(ASSOC_FLAG_CHANNEL, &assoc_req->flags))
2182 assoc_req->channel = priv->channel;
2183
2184 if (!test_bit(ASSOC_FLAG_BAND, &assoc_req->flags))
2185 assoc_req->band = priv->curbssparams.band;
2186
2187 if (!test_bit(ASSOC_FLAG_MODE, &assoc_req->flags))
2188 assoc_req->mode = priv->mode;
2189
2190 if (!test_bit(ASSOC_FLAG_BSSID, &assoc_req->flags)) {
2191 memcpy(&assoc_req->bssid, priv->curbssparams.bssid,
2192 ETH_ALEN);
2193 }
2194
2195 if (!test_bit(ASSOC_FLAG_WEP_KEYS, &assoc_req->flags)) {
2196 int i;
2197 for (i = 0; i < 4; i++) {
2198 memcpy(&assoc_req->wep_keys[i], &priv->wep_keys[i],
2199 sizeof(struct enc_key));
2200 }
2201 }
2202
2203 if (!test_bit(ASSOC_FLAG_WEP_TX_KEYIDX, &assoc_req->flags))
2204 assoc_req->wep_tx_keyidx = priv->wep_tx_keyidx;
2205
2206 if (!test_bit(ASSOC_FLAG_WPA_MCAST_KEY, &assoc_req->flags)) {
2207 memcpy(&assoc_req->wpa_mcast_key, &priv->wpa_mcast_key,
2208 sizeof(struct enc_key));
2209 }
2210
2211 if (!test_bit(ASSOC_FLAG_WPA_UCAST_KEY, &assoc_req->flags)) {
2212 memcpy(&assoc_req->wpa_unicast_key, &priv->wpa_unicast_key,
2213 sizeof(struct enc_key));
2214 }
2215
2216 if (!test_bit(ASSOC_FLAG_SECINFO, &assoc_req->flags)) {
2217 memcpy(&assoc_req->secinfo, &priv->secinfo,
2218 sizeof(struct lbs_802_11_security));
2219 }
2220
2221 if (!test_bit(ASSOC_FLAG_WPA_IE, &assoc_req->flags)) {
2222 memcpy(&assoc_req->wpa_ie, &priv->wpa_ie,
2223 MAX_WPA_IE_LEN);
2224 assoc_req->wpa_ie_len = priv->wpa_ie_len;
2225 }
2226
2227 lbs_deb_leave(LBS_DEB_ASSOC);
2228 return assoc_req;
2229}
2230
2231
2232/**
2233 * @brief Deauthenticate from a specific BSS
2234 *
2235 * @param priv A pointer to struct lbs_private structure
2236 * @param bssid The specific BSS to deauthenticate from
2237 * @param reason The 802.11 sec. 7.3.1.7 Reason Code for deauthenticating
2238 *
2239 * @return 0 on success, error on failure
2240 */
2241int lbs_cmd_80211_deauthenticate(struct lbs_private *priv, u8 bssid[ETH_ALEN],
2242 u16 reason)
2243{
2244 struct cmd_ds_802_11_deauthenticate cmd;
2245 int ret;
2246
2247 lbs_deb_enter(LBS_DEB_JOIN);
2248
2249 memset(&cmd, 0, sizeof(cmd));
2250 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
2251 memcpy(cmd.macaddr, &bssid[0], ETH_ALEN);
2252 cmd.reasoncode = cpu_to_le16(reason);
2253
2254 ret = lbs_cmd_with_response(priv, CMD_802_11_DEAUTHENTICATE, &cmd);
2255
2256 /* Clean up everything even if there was an error; can't assume that
2257 * we're still authenticated to the AP after trying to deauth.
2258 */
2259 lbs_mac_event_disconnected(priv);
2260
2261 lbs_deb_leave(LBS_DEB_JOIN);
2262 return ret;
2263}
2264
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-17 12:49:42 -0500