1 /* Copyright (C) 2006, Red Hat, Inc. */
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>
15 static const u8 bssid_any[ETH_ALEN] __attribute__ ((aligned (2))) =
16 { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
17 static const u8 bssid_off[ETH_ALEN] __attribute__ ((aligned (2))) =
18 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
20 /* The firmware needs the following bits masked out of the beacon-derived
21 * capability field when associating/joining to a BSS:
22 * 9 (QoS), 11 (APSD), 12 (unused), 14 (unused), 15 (unused)
24 #define CAPINFO_MASK (~(0xda00))
28 * @brief This function finds common rates between rates and card rates.
30 * It will fill common rates in rates as output if found.
32 * NOTE: Setting the MSB of the basic rates need to be taken
33 * care, either before or after calling this function
35 * @param priv A pointer to struct lbs_private structure
36 * @param rates the buffer which keeps input and output
37 * @param rates_size the size of rates buffer; new size of buffer on return,
38 * which will be less than or equal to original rates_size
40 * @return 0 on success, or -1 on error
42 static int get_common_rates(struct lbs_private *priv,
47 u8 intersection[MAX_RATES];
48 u16 intersection_size;
51 intersection_size = min_t(u16, *rates_size, ARRAY_SIZE(intersection));
53 /* Allow each rate from 'rates' that is supported by the hardware */
54 for (i = 0; i < ARRAY_SIZE(lbs_bg_rates) && lbs_bg_rates[i]; i++) {
55 for (j = 0; j < intersection_size && rates[j]; j++) {
56 if (rates[j] == lbs_bg_rates[i])
57 intersection[num_rates++] = rates[j];
61 lbs_deb_hex(LBS_DEB_JOIN, "AP rates ", rates, *rates_size);
62 lbs_deb_hex(LBS_DEB_JOIN, "card rates ", lbs_bg_rates,
63 ARRAY_SIZE(lbs_bg_rates));
64 lbs_deb_hex(LBS_DEB_JOIN, "common rates", intersection, num_rates);
65 lbs_deb_join("TX data rate 0x%02x\n", priv->cur_rate);
67 if (!priv->enablehwauto) {
68 for (i = 0; i < num_rates; i++) {
69 if (intersection[i] == priv->cur_rate)
72 lbs_pr_alert("Previously set fixed data rate %#x isn't "
73 "compatible with the network.\n", priv->cur_rate);
78 memset(rates, 0, *rates_size);
79 *rates_size = num_rates;
80 memcpy(rates, intersection, num_rates);
86 * @brief Sets the MSB on basic rates as the firmware requires
88 * Scan through an array and set the MSB for basic data rates.
90 * @param rates buffer of data rates
91 * @param len size of buffer
93 static void lbs_set_basic_rate_flags(u8 *rates, size_t len)
97 for (i = 0; i < len; i++) {
98 if (rates[i] == 0x02 || rates[i] == 0x04 ||
99 rates[i] == 0x0b || rates[i] == 0x16)
105 static u8 iw_auth_to_ieee_auth(u8 auth)
107 if (auth == IW_AUTH_ALG_OPEN_SYSTEM)
109 else if (auth == IW_AUTH_ALG_SHARED_KEY)
111 else if (auth == IW_AUTH_ALG_LEAP)
114 lbs_deb_join("%s: invalid auth alg 0x%X\n", __func__, auth);
119 * @brief This function prepares the authenticate command. AUTHENTICATE only
120 * sets the authentication suite for future associations, as the firmware
121 * handles authentication internally during the ASSOCIATE command.
123 * @param priv A pointer to struct lbs_private structure
124 * @param bssid The peer BSSID with which to authenticate
125 * @param auth The authentication mode to use (from wireless.h)
129 static int lbs_set_authentication(struct lbs_private *priv, u8 bssid[6], u8 auth)
131 struct cmd_ds_802_11_authenticate cmd;
134 lbs_deb_enter(LBS_DEB_JOIN);
136 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
137 memcpy(cmd.bssid, bssid, ETH_ALEN);
139 cmd.authtype = iw_auth_to_ieee_auth(auth);
141 lbs_deb_join("AUTH_CMD: BSSID %pM, auth 0x%x\n", bssid, cmd.authtype);
143 ret = lbs_cmd_with_response(priv, CMD_802_11_AUTHENTICATE, &cmd);
145 lbs_deb_leave_args(LBS_DEB_JOIN, "ret %d", ret);
150 static int lbs_assoc_post(struct lbs_private *priv,
151 struct cmd_ds_802_11_associate_response *resp)
154 union iwreq_data wrqu;
155 struct bss_descriptor *bss;
158 lbs_deb_enter(LBS_DEB_ASSOC);
160 if (!priv->in_progress_assoc_req) {
161 lbs_deb_assoc("ASSOC_RESP: no in-progress assoc request\n");
165 bss = &priv->in_progress_assoc_req->bss;
168 * Older FW versions map the IEEE 802.11 Status Code in the association
169 * response to the following values returned in resp->statuscode:
171 * IEEE Status Code Marvell Status Code
172 * 0 -> 0x0000 ASSOC_RESULT_SUCCESS
173 * 13 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED
174 * 14 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED
175 * 15 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED
176 * 16 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED
177 * others -> 0x0003 ASSOC_RESULT_REFUSED
179 * Other response codes:
180 * 0x0001 -> ASSOC_RESULT_INVALID_PARAMETERS (unused)
181 * 0x0002 -> ASSOC_RESULT_TIMEOUT (internal timer expired waiting for
182 * association response from the AP)
185 status_code = le16_to_cpu(resp->statuscode);
186 if (priv->fwrelease < 0x09000000) {
187 switch (status_code) {
191 lbs_deb_assoc("ASSOC_RESP: invalid parameters\n");
194 lbs_deb_assoc("ASSOC_RESP: internal timer "
195 "expired while waiting for the AP\n");
198 lbs_deb_assoc("ASSOC_RESP: association "
202 lbs_deb_assoc("ASSOC_RESP: authentication "
206 lbs_deb_assoc("ASSOC_RESP: failure reason 0x%02x "
207 " unknown\n", status_code);
211 /* v9+ returns the AP's association response */
212 lbs_deb_assoc("ASSOC_RESP: failure reason 0x%02x\n", status_code);
216 lbs_mac_event_disconnected(priv);
221 lbs_deb_hex(LBS_DEB_ASSOC, "ASSOC_RESP",
222 (void *) (resp + sizeof (resp->hdr)),
223 le16_to_cpu(resp->hdr.size) - sizeof (resp->hdr));
225 /* Send a Media Connected event, according to the Spec */
226 priv->connect_status = LBS_CONNECTED;
228 /* Update current SSID and BSSID */
229 memcpy(&priv->curbssparams.ssid, &bss->ssid, IW_ESSID_MAX_SIZE);
230 priv->curbssparams.ssid_len = bss->ssid_len;
231 memcpy(priv->curbssparams.bssid, bss->bssid, ETH_ALEN);
233 priv->SNR[TYPE_RXPD][TYPE_AVG] = 0;
234 priv->NF[TYPE_RXPD][TYPE_AVG] = 0;
236 memset(priv->rawSNR, 0x00, sizeof(priv->rawSNR));
237 memset(priv->rawNF, 0x00, sizeof(priv->rawNF));
241 netif_carrier_on(priv->dev);
242 if (!priv->tx_pending_len)
243 netif_wake_queue(priv->dev);
245 memcpy(wrqu.ap_addr.sa_data, priv->curbssparams.bssid, ETH_ALEN);
246 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
247 wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
250 lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
255 * @brief This function prepares an association-class command.
257 * @param priv A pointer to struct lbs_private structure
258 * @param assoc_req The association request describing the BSS to associate
259 * or reassociate with
260 * @param command The actual command, either CMD_802_11_ASSOCIATE or
261 * CMD_802_11_REASSOCIATE
265 static int lbs_associate(struct lbs_private *priv,
266 struct assoc_request *assoc_req,
269 struct cmd_ds_802_11_associate cmd;
271 struct bss_descriptor *bss = &assoc_req->bss;
272 u8 *pos = &(cmd.iebuf[0]);
273 u16 tmpcap, tmplen, tmpauth;
274 struct mrvl_ie_ssid_param_set *ssid;
275 struct mrvl_ie_ds_param_set *ds;
276 struct mrvl_ie_cf_param_set *cf;
277 struct mrvl_ie_rates_param_set *rates;
278 struct mrvl_ie_rsn_param_set *rsn;
279 struct mrvl_ie_auth_type *auth;
281 lbs_deb_enter(LBS_DEB_ASSOC);
283 BUG_ON((command != CMD_802_11_ASSOCIATE) &&
284 (command != CMD_802_11_REASSOCIATE));
286 memset(&cmd, 0, sizeof(cmd));
287 cmd.hdr.command = cpu_to_le16(command);
289 /* Fill in static fields */
290 memcpy(cmd.bssid, bss->bssid, ETH_ALEN);
291 cmd.listeninterval = cpu_to_le16(MRVDRV_DEFAULT_LISTEN_INTERVAL);
293 /* Capability info */
294 tmpcap = (bss->capability & CAPINFO_MASK);
295 if (bss->mode == IW_MODE_INFRA)
296 tmpcap |= WLAN_CAPABILITY_ESS;
297 cmd.capability = cpu_to_le16(tmpcap);
298 lbs_deb_assoc("ASSOC_CMD: capability 0x%04x\n", tmpcap);
301 ssid = (struct mrvl_ie_ssid_param_set *) pos;
302 ssid->header.type = cpu_to_le16(TLV_TYPE_SSID);
303 tmplen = bss->ssid_len;
304 ssid->header.len = cpu_to_le16(tmplen);
305 memcpy(ssid->ssid, bss->ssid, tmplen);
306 pos += sizeof(ssid->header) + tmplen;
308 ds = (struct mrvl_ie_ds_param_set *) pos;
309 ds->header.type = cpu_to_le16(TLV_TYPE_PHY_DS);
310 ds->header.len = cpu_to_le16(1);
311 ds->channel = bss->phy.ds.channel;
312 pos += sizeof(ds->header) + 1;
314 cf = (struct mrvl_ie_cf_param_set *) pos;
315 cf->header.type = cpu_to_le16(TLV_TYPE_CF);
316 tmplen = sizeof(*cf) - sizeof (cf->header);
317 cf->header.len = cpu_to_le16(tmplen);
318 /* IE payload should be zeroed, firmware fills it in for us */
321 rates = (struct mrvl_ie_rates_param_set *) pos;
322 rates->header.type = cpu_to_le16(TLV_TYPE_RATES);
323 tmplen = min_t(u16, ARRAY_SIZE(bss->rates), MAX_RATES);
324 memcpy(&rates->rates, &bss->rates, tmplen);
325 if (get_common_rates(priv, rates->rates, &tmplen)) {
329 pos += sizeof(rates->header) + tmplen;
330 rates->header.len = cpu_to_le16(tmplen);
331 lbs_deb_assoc("ASSOC_CMD: num rates %u\n", tmplen);
333 /* Copy the infra. association rates into Current BSS state structure */
334 memset(&priv->curbssparams.rates, 0, sizeof(priv->curbssparams.rates));
335 memcpy(&priv->curbssparams.rates, &rates->rates, tmplen);
337 /* Set MSB on basic rates as the firmware requires, but _after_
338 * copying to current bss rates.
340 lbs_set_basic_rate_flags(rates->rates, tmplen);
342 /* Firmware v9+ indicate authentication suites as a TLV */
343 if (priv->fwrelease >= 0x09000000) {
344 auth = (struct mrvl_ie_auth_type *) pos;
345 auth->header.type = cpu_to_le16(TLV_TYPE_AUTH_TYPE);
346 auth->header.len = cpu_to_le16(2);
347 tmpauth = iw_auth_to_ieee_auth(priv->secinfo.auth_mode);
348 auth->auth = cpu_to_le16(tmpauth);
349 pos += sizeof(auth->header) + 2;
351 lbs_deb_join("AUTH_CMD: BSSID %pM, auth 0x%x\n",
352 bss->bssid, priv->secinfo.auth_mode);
356 if (assoc_req->secinfo.WPAenabled || assoc_req->secinfo.WPA2enabled) {
357 rsn = (struct mrvl_ie_rsn_param_set *) pos;
358 /* WPA_IE or WPA2_IE */
359 rsn->header.type = cpu_to_le16((u16) assoc_req->wpa_ie[0]);
360 tmplen = (u16) assoc_req->wpa_ie[1];
361 rsn->header.len = cpu_to_le16(tmplen);
362 memcpy(rsn->rsnie, &assoc_req->wpa_ie[2], tmplen);
363 lbs_deb_hex(LBS_DEB_JOIN, "ASSOC_CMD: WPA/RSN IE", (u8 *) rsn,
364 sizeof(rsn->header) + tmplen);
365 pos += sizeof(rsn->header) + tmplen;
368 cmd.hdr.size = cpu_to_le16((sizeof(cmd) - sizeof(cmd.iebuf)) +
369 (u16)(pos - (u8 *) &cmd.iebuf));
371 /* update curbssparams */
372 priv->curbssparams.channel = bss->phy.ds.channel;
374 ret = lbs_cmd_with_response(priv, command, &cmd);
376 ret = lbs_assoc_post(priv,
377 (struct cmd_ds_802_11_associate_response *) &cmd);
381 lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
386 * @brief Associate to a specific BSS discovered in a scan
388 * @param priv A pointer to struct lbs_private structure
389 * @param assoc_req The association request describing the BSS to associate with
391 * @return 0-success, otherwise fail
393 static int lbs_try_associate(struct lbs_private *priv,
394 struct assoc_request *assoc_req)
397 u8 preamble = RADIO_PREAMBLE_LONG;
399 lbs_deb_enter(LBS_DEB_ASSOC);
401 /* FW v9 and higher indicate authentication suites as a TLV in the
402 * association command, not as a separate authentication command.
404 if (priv->fwrelease < 0x09000000) {
405 ret = lbs_set_authentication(priv, assoc_req->bss.bssid,
406 priv->secinfo.auth_mode);
411 /* Use short preamble only when both the BSS and firmware support it */
412 if ((priv->capability & WLAN_CAPABILITY_SHORT_PREAMBLE) &&
413 (assoc_req->bss.capability & WLAN_CAPABILITY_SHORT_PREAMBLE))
414 preamble = RADIO_PREAMBLE_SHORT;
416 ret = lbs_set_radio(priv, preamble, 1);
420 ret = lbs_associate(priv, assoc_req, CMD_802_11_ASSOCIATE);
423 lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
427 static int lbs_adhoc_post(struct lbs_private *priv,
428 struct cmd_ds_802_11_ad_hoc_result *resp)
431 u16 command = le16_to_cpu(resp->hdr.command);
432 u16 result = le16_to_cpu(resp->hdr.result);
433 union iwreq_data wrqu;
434 struct bss_descriptor *bss;
435 DECLARE_SSID_BUF(ssid);
437 lbs_deb_enter(LBS_DEB_JOIN);
439 if (!priv->in_progress_assoc_req) {
440 lbs_deb_join("ADHOC_RESP: no in-progress association "
445 bss = &priv->in_progress_assoc_req->bss;
448 * Join result code 0 --> SUCCESS
451 lbs_deb_join("ADHOC_RESP: failed (result 0x%X)\n", result);
452 if (priv->connect_status == LBS_CONNECTED)
453 lbs_mac_event_disconnected(priv);
458 /* Send a Media Connected event, according to the Spec */
459 priv->connect_status = LBS_CONNECTED;
461 if (command == CMD_RET(CMD_802_11_AD_HOC_START)) {
462 /* Update the created network descriptor with the new BSSID */
463 memcpy(bss->bssid, resp->bssid, ETH_ALEN);
466 /* Set the BSSID from the joined/started descriptor */
467 memcpy(&priv->curbssparams.bssid, bss->bssid, ETH_ALEN);
469 /* Set the new SSID to current SSID */
470 memcpy(&priv->curbssparams.ssid, &bss->ssid, IW_ESSID_MAX_SIZE);
471 priv->curbssparams.ssid_len = bss->ssid_len;
473 netif_carrier_on(priv->dev);
474 if (!priv->tx_pending_len)
475 netif_wake_queue(priv->dev);
477 memset(&wrqu, 0, sizeof(wrqu));
478 memcpy(wrqu.ap_addr.sa_data, priv->curbssparams.bssid, ETH_ALEN);
479 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
480 wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
482 lbs_deb_join("ADHOC_RESP: Joined/started '%s', BSSID %pM, channel %d\n",
483 print_ssid(ssid, bss->ssid, bss->ssid_len),
484 priv->curbssparams.bssid,
485 priv->curbssparams.channel);
488 lbs_deb_leave_args(LBS_DEB_JOIN, "ret %d", ret);
493 * @brief Join an adhoc network found in a previous scan
495 * @param priv A pointer to struct lbs_private structure
496 * @param assoc_req The association request describing the BSS to join
498 * @return 0 on success, error on failure
500 static int lbs_adhoc_join(struct lbs_private *priv,
501 struct assoc_request *assoc_req)
503 struct cmd_ds_802_11_ad_hoc_join cmd;
504 struct bss_descriptor *bss = &assoc_req->bss;
505 u8 preamble = RADIO_PREAMBLE_LONG;
506 DECLARE_SSID_BUF(ssid);
510 lbs_deb_enter(LBS_DEB_ASSOC);
512 lbs_deb_join("current SSID '%s', ssid length %u\n",
513 print_ssid(ssid, priv->curbssparams.ssid,
514 priv->curbssparams.ssid_len),
515 priv->curbssparams.ssid_len);
516 lbs_deb_join("requested ssid '%s', ssid length %u\n",
517 print_ssid(ssid, bss->ssid, bss->ssid_len),
520 /* check if the requested SSID is already joined */
521 if (priv->curbssparams.ssid_len &&
522 !lbs_ssid_cmp(priv->curbssparams.ssid,
523 priv->curbssparams.ssid_len,
524 bss->ssid, bss->ssid_len) &&
525 (priv->mode == IW_MODE_ADHOC) &&
526 (priv->connect_status == LBS_CONNECTED)) {
527 union iwreq_data wrqu;
529 lbs_deb_join("ADHOC_J_CMD: New ad-hoc SSID is the same as "
530 "current, not attempting to re-join");
532 /* Send the re-association event though, because the association
533 * request really was successful, even if just a null-op.
535 memset(&wrqu, 0, sizeof(wrqu));
536 memcpy(wrqu.ap_addr.sa_data, priv->curbssparams.bssid,
538 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
539 wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
543 /* Use short preamble only when both the BSS and firmware support it */
544 if ((priv->capability & WLAN_CAPABILITY_SHORT_PREAMBLE) &&
545 (bss->capability & WLAN_CAPABILITY_SHORT_PREAMBLE)) {
546 lbs_deb_join("AdhocJoin: Short preamble\n");
547 preamble = RADIO_PREAMBLE_SHORT;
550 ret = lbs_set_radio(priv, preamble, 1);
554 lbs_deb_join("AdhocJoin: channel = %d\n", assoc_req->channel);
555 lbs_deb_join("AdhocJoin: band = %c\n", assoc_req->band);
557 priv->adhoccreate = 0;
558 priv->curbssparams.channel = bss->channel;
560 /* Build the join command */
561 memset(&cmd, 0, sizeof(cmd));
562 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
564 cmd.bss.type = CMD_BSS_TYPE_IBSS;
565 cmd.bss.beaconperiod = cpu_to_le16(bss->beaconperiod);
567 memcpy(&cmd.bss.bssid, &bss->bssid, ETH_ALEN);
568 memcpy(&cmd.bss.ssid, &bss->ssid, bss->ssid_len);
570 memcpy(&cmd.bss.ds, &bss->phy.ds, sizeof(struct ieee_ie_ds_param_set));
572 memcpy(&cmd.bss.ibss, &bss->ss.ibss,
573 sizeof(struct ieee_ie_ibss_param_set));
575 cmd.bss.capability = cpu_to_le16(bss->capability & CAPINFO_MASK);
576 lbs_deb_join("ADHOC_J_CMD: tmpcap=%4X CAPINFO_MASK=%4X\n",
577 bss->capability, CAPINFO_MASK);
579 /* information on BSSID descriptor passed to FW */
580 lbs_deb_join("ADHOC_J_CMD: BSSID = %pM, SSID = '%s'\n",
581 cmd.bss.bssid, cmd.bss.ssid);
583 /* Only v8 and below support setting these */
584 if (priv->fwrelease < 0x09000000) {
586 cmd.failtimeout = cpu_to_le16(MRVDRV_ASSOCIATION_TIME_OUT);
588 cmd.probedelay = cpu_to_le16(CMD_SCAN_PROBE_DELAY_TIME);
591 /* Copy Data rates from the rates recorded in scan response */
592 memset(cmd.bss.rates, 0, sizeof(cmd.bss.rates));
593 ratesize = min_t(u16, ARRAY_SIZE(cmd.bss.rates), ARRAY_SIZE (bss->rates));
594 memcpy(cmd.bss.rates, bss->rates, ratesize);
595 if (get_common_rates(priv, cmd.bss.rates, &ratesize)) {
596 lbs_deb_join("ADHOC_JOIN: get_common_rates returned error.\n");
601 /* Copy the ad-hoc creation rates into Current BSS state structure */
602 memset(&priv->curbssparams.rates, 0, sizeof(priv->curbssparams.rates));
603 memcpy(&priv->curbssparams.rates, cmd.bss.rates, ratesize);
605 /* Set MSB on basic rates as the firmware requires, but _after_
606 * copying to current bss rates.
608 lbs_set_basic_rate_flags(cmd.bss.rates, ratesize);
610 cmd.bss.ibss.atimwindow = bss->atimwindow;
612 if (assoc_req->secinfo.wep_enabled) {
613 u16 tmp = le16_to_cpu(cmd.bss.capability);
614 tmp |= WLAN_CAPABILITY_PRIVACY;
615 cmd.bss.capability = cpu_to_le16(tmp);
618 if (priv->psmode == LBS802_11POWERMODEMAX_PSP) {
619 __le32 local_ps_mode = cpu_to_le32(LBS802_11POWERMODECAM);
622 ret = lbs_prepare_and_send_command(priv, CMD_802_11_PS_MODE,
631 ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_JOIN, &cmd);
633 ret = lbs_adhoc_post(priv,
634 (struct cmd_ds_802_11_ad_hoc_result *)&cmd);
638 lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
643 * @brief Start an Adhoc Network
645 * @param priv A pointer to struct lbs_private structure
646 * @param assoc_req The association request describing the BSS to start
648 * @return 0 on success, error on failure
650 static int lbs_adhoc_start(struct lbs_private *priv,
651 struct assoc_request *assoc_req)
653 struct cmd_ds_802_11_ad_hoc_start cmd;
654 u8 preamble = RADIO_PREAMBLE_LONG;
658 DECLARE_SSID_BUF(ssid);
660 lbs_deb_enter(LBS_DEB_ASSOC);
662 if (priv->capability & WLAN_CAPABILITY_SHORT_PREAMBLE) {
663 lbs_deb_join("ADHOC_START: Will use short preamble\n");
664 preamble = RADIO_PREAMBLE_SHORT;
667 ret = lbs_set_radio(priv, preamble, 1);
671 /* Build the start command */
672 memset(&cmd, 0, sizeof(cmd));
673 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
675 memcpy(cmd.ssid, assoc_req->ssid, assoc_req->ssid_len);
677 lbs_deb_join("ADHOC_START: SSID '%s', ssid length %u\n",
678 print_ssid(ssid, assoc_req->ssid, assoc_req->ssid_len),
679 assoc_req->ssid_len);
681 cmd.bsstype = CMD_BSS_TYPE_IBSS;
683 if (priv->beacon_period == 0)
684 priv->beacon_period = MRVDRV_BEACON_INTERVAL;
685 cmd.beaconperiod = cpu_to_le16(priv->beacon_period);
687 WARN_ON(!assoc_req->channel);
689 /* set Physical parameter set */
690 cmd.ds.header.id = WLAN_EID_DS_PARAMS;
691 cmd.ds.header.len = 1;
692 cmd.ds.channel = assoc_req->channel;
694 /* set IBSS parameter set */
695 cmd.ibss.header.id = WLAN_EID_IBSS_PARAMS;
696 cmd.ibss.header.len = 2;
697 cmd.ibss.atimwindow = cpu_to_le16(0);
699 /* set capability info */
700 tmpcap = WLAN_CAPABILITY_IBSS;
701 if (assoc_req->secinfo.wep_enabled ||
702 assoc_req->secinfo.WPAenabled ||
703 assoc_req->secinfo.WPA2enabled) {
704 lbs_deb_join("ADHOC_START: WEP/WPA enabled, privacy on\n");
705 tmpcap |= WLAN_CAPABILITY_PRIVACY;
707 lbs_deb_join("ADHOC_START: WEP disabled, privacy off\n");
709 cmd.capability = cpu_to_le16(tmpcap);
711 /* Only v8 and below support setting probe delay */
712 if (priv->fwrelease < 0x09000000)
713 cmd.probedelay = cpu_to_le16(CMD_SCAN_PROBE_DELAY_TIME);
715 ratesize = min(sizeof(cmd.rates), sizeof(lbs_bg_rates));
716 memcpy(cmd.rates, lbs_bg_rates, ratesize);
718 /* Copy the ad-hoc creating rates into Current BSS state structure */
719 memset(&priv->curbssparams.rates, 0, sizeof(priv->curbssparams.rates));
720 memcpy(&priv->curbssparams.rates, &cmd.rates, ratesize);
722 /* Set MSB on basic rates as the firmware requires, but _after_
723 * copying to current bss rates.
725 lbs_set_basic_rate_flags(cmd.rates, ratesize);
727 lbs_deb_join("ADHOC_START: rates=%02x %02x %02x %02x\n",
728 cmd.rates[0], cmd.rates[1], cmd.rates[2], cmd.rates[3]);
730 lbs_deb_join("ADHOC_START: Starting Ad-Hoc BSS on channel %d, band %d\n",
731 assoc_req->channel, assoc_req->band);
733 priv->adhoccreate = 1;
734 priv->mode = IW_MODE_ADHOC;
736 ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_START, &cmd);
738 ret = lbs_adhoc_post(priv,
739 (struct cmd_ds_802_11_ad_hoc_result *)&cmd);
742 lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
747 * @brief Stop and Ad-Hoc network and exit Ad-Hoc mode
749 * @param priv A pointer to struct lbs_private structure
750 * @return 0 on success, or an error
752 int lbs_adhoc_stop(struct lbs_private *priv)
754 struct cmd_ds_802_11_ad_hoc_stop cmd;
757 lbs_deb_enter(LBS_DEB_JOIN);
759 memset(&cmd, 0, sizeof (cmd));
760 cmd.hdr.size = cpu_to_le16 (sizeof (cmd));
762 ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_STOP, &cmd);
764 /* Clean up everything even if there was an error */
765 lbs_mac_event_disconnected(priv);
767 lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
771 static inline int match_bss_no_security(struct lbs_802_11_security *secinfo,
772 struct bss_descriptor *match_bss)
774 if (!secinfo->wep_enabled && !secinfo->WPAenabled
775 && !secinfo->WPA2enabled
776 && match_bss->wpa_ie[0] != WLAN_EID_GENERIC
777 && match_bss->rsn_ie[0] != WLAN_EID_RSN
778 && !(match_bss->capability & WLAN_CAPABILITY_PRIVACY))
784 static inline int match_bss_static_wep(struct lbs_802_11_security *secinfo,
785 struct bss_descriptor *match_bss)
787 if (secinfo->wep_enabled && !secinfo->WPAenabled
788 && !secinfo->WPA2enabled
789 && (match_bss->capability & WLAN_CAPABILITY_PRIVACY))
795 static inline int match_bss_wpa(struct lbs_802_11_security *secinfo,
796 struct bss_descriptor *match_bss)
798 if (!secinfo->wep_enabled && secinfo->WPAenabled
799 && (match_bss->wpa_ie[0] == WLAN_EID_GENERIC)
800 /* privacy bit may NOT be set in some APs like LinkSys WRT54G
801 && (match_bss->capability & WLAN_CAPABILITY_PRIVACY) */
808 static inline int match_bss_wpa2(struct lbs_802_11_security *secinfo,
809 struct bss_descriptor *match_bss)
811 if (!secinfo->wep_enabled && secinfo->WPA2enabled &&
812 (match_bss->rsn_ie[0] == WLAN_EID_RSN)
813 /* privacy bit may NOT be set in some APs like LinkSys WRT54G
814 (match_bss->capability & WLAN_CAPABILITY_PRIVACY) */
821 static inline int match_bss_dynamic_wep(struct lbs_802_11_security *secinfo,
822 struct bss_descriptor *match_bss)
824 if (!secinfo->wep_enabled && !secinfo->WPAenabled
825 && !secinfo->WPA2enabled
826 && (match_bss->wpa_ie[0] != WLAN_EID_GENERIC)
827 && (match_bss->rsn_ie[0] != WLAN_EID_RSN)
828 && (match_bss->capability & WLAN_CAPABILITY_PRIVACY))
835 * @brief Check if a scanned network compatible with the driver settings
837 * WEP WPA WPA2 ad-hoc encrypt Network
838 * enabled enabled enabled AES mode privacy WPA WPA2 Compatible
839 * 0 0 0 0 NONE 0 0 0 yes No security
840 * 1 0 0 0 NONE 1 0 0 yes Static WEP
841 * 0 1 0 0 x 1x 1 x yes WPA
842 * 0 0 1 0 x 1x x 1 yes WPA2
843 * 0 0 0 1 NONE 1 0 0 yes Ad-hoc AES
844 * 0 0 0 0 !=NONE 1 0 0 yes Dynamic WEP
847 * @param priv A pointer to struct lbs_private
848 * @param index Index in scantable to check against current driver settings
849 * @param mode Network mode: Infrastructure or IBSS
851 * @return Index in scantable, or error code if negative
853 static int is_network_compatible(struct lbs_private *priv,
854 struct bss_descriptor *bss, uint8_t mode)
858 lbs_deb_enter(LBS_DEB_SCAN);
860 if (bss->mode != mode)
863 matched = match_bss_no_security(&priv->secinfo, bss);
866 matched = match_bss_static_wep(&priv->secinfo, bss);
869 matched = match_bss_wpa(&priv->secinfo, bss);
871 lbs_deb_scan("is_network_compatible() WPA: wpa_ie 0x%x "
872 "wpa2_ie 0x%x WEP %s WPA %s WPA2 %s "
873 "privacy 0x%x\n", bss->wpa_ie[0], bss->rsn_ie[0],
874 priv->secinfo.wep_enabled ? "e" : "d",
875 priv->secinfo.WPAenabled ? "e" : "d",
876 priv->secinfo.WPA2enabled ? "e" : "d",
877 (bss->capability & WLAN_CAPABILITY_PRIVACY));
880 matched = match_bss_wpa2(&priv->secinfo, bss);
882 lbs_deb_scan("is_network_compatible() WPA2: wpa_ie 0x%x "
883 "wpa2_ie 0x%x WEP %s WPA %s WPA2 %s "
884 "privacy 0x%x\n", bss->wpa_ie[0], bss->rsn_ie[0],
885 priv->secinfo.wep_enabled ? "e" : "d",
886 priv->secinfo.WPAenabled ? "e" : "d",
887 priv->secinfo.WPA2enabled ? "e" : "d",
888 (bss->capability & WLAN_CAPABILITY_PRIVACY));
891 matched = match_bss_dynamic_wep(&priv->secinfo, bss);
893 lbs_deb_scan("is_network_compatible() dynamic WEP: "
894 "wpa_ie 0x%x wpa2_ie 0x%x privacy 0x%x\n",
895 bss->wpa_ie[0], bss->rsn_ie[0],
896 (bss->capability & WLAN_CAPABILITY_PRIVACY));
900 /* bss security settings don't match those configured on card */
901 lbs_deb_scan("is_network_compatible() FAILED: wpa_ie 0x%x "
902 "wpa2_ie 0x%x WEP %s WPA %s WPA2 %s privacy 0x%x\n",
903 bss->wpa_ie[0], bss->rsn_ie[0],
904 priv->secinfo.wep_enabled ? "e" : "d",
905 priv->secinfo.WPAenabled ? "e" : "d",
906 priv->secinfo.WPA2enabled ? "e" : "d",
907 (bss->capability & WLAN_CAPABILITY_PRIVACY));
910 lbs_deb_leave_args(LBS_DEB_SCAN, "matched: %d", matched);
915 * @brief This function finds a specific compatible BSSID in the scan list
917 * Used in association code
919 * @param priv A pointer to struct lbs_private
920 * @param bssid BSSID to find in the scan list
921 * @param mode Network mode: Infrastructure or IBSS
923 * @return index in BSSID list, or error return code (< 0)
925 static struct bss_descriptor *lbs_find_bssid_in_list(struct lbs_private *priv,
926 uint8_t *bssid, uint8_t mode)
928 struct bss_descriptor *iter_bss;
929 struct bss_descriptor *found_bss = NULL;
931 lbs_deb_enter(LBS_DEB_SCAN);
936 lbs_deb_hex(LBS_DEB_SCAN, "looking for", bssid, ETH_ALEN);
938 /* Look through the scan table for a compatible match. The loop will
939 * continue past a matched bssid that is not compatible in case there
940 * is an AP with multiple SSIDs assigned to the same BSSID
942 mutex_lock(&priv->lock);
943 list_for_each_entry(iter_bss, &priv->network_list, list) {
944 if (compare_ether_addr(iter_bss->bssid, bssid))
945 continue; /* bssid doesn't match */
949 if (!is_network_compatible(priv, iter_bss, mode))
951 found_bss = iter_bss;
954 found_bss = iter_bss;
958 mutex_unlock(&priv->lock);
961 lbs_deb_leave_args(LBS_DEB_SCAN, "found_bss %p", found_bss);
966 * @brief This function finds ssid in ssid list.
968 * Used in association code
970 * @param priv A pointer to struct lbs_private
971 * @param ssid SSID to find in the list
972 * @param bssid BSSID to qualify the SSID selection (if provided)
973 * @param mode Network mode: Infrastructure or IBSS
975 * @return index in BSSID list
977 static struct bss_descriptor *lbs_find_ssid_in_list(struct lbs_private *priv,
978 uint8_t *ssid, uint8_t ssid_len,
979 uint8_t *bssid, uint8_t mode,
983 struct bss_descriptor *iter_bss = NULL;
984 struct bss_descriptor *found_bss = NULL;
985 struct bss_descriptor *tmp_oldest = NULL;
987 lbs_deb_enter(LBS_DEB_SCAN);
989 mutex_lock(&priv->lock);
991 list_for_each_entry(iter_bss, &priv->network_list, list) {
993 (iter_bss->last_scanned < tmp_oldest->last_scanned))
994 tmp_oldest = iter_bss;
996 if (lbs_ssid_cmp(iter_bss->ssid, iter_bss->ssid_len,
997 ssid, ssid_len) != 0)
998 continue; /* ssid doesn't match */
999 if (bssid && compare_ether_addr(iter_bss->bssid, bssid) != 0)
1000 continue; /* bssid doesn't match */
1001 if ((channel > 0) && (iter_bss->channel != channel))
1002 continue; /* channel doesn't match */
1007 if (!is_network_compatible(priv, iter_bss, mode))
1011 /* Found requested BSSID */
1012 found_bss = iter_bss;
1016 if (SCAN_RSSI(iter_bss->rssi) > bestrssi) {
1017 bestrssi = SCAN_RSSI(iter_bss->rssi);
1018 found_bss = iter_bss;
1023 if (SCAN_RSSI(iter_bss->rssi) > bestrssi) {
1024 bestrssi = SCAN_RSSI(iter_bss->rssi);
1025 found_bss = iter_bss;
1032 mutex_unlock(&priv->lock);
1033 lbs_deb_leave_args(LBS_DEB_SCAN, "found_bss %p", found_bss);
1037 static int assoc_helper_essid(struct lbs_private *priv,
1038 struct assoc_request * assoc_req)
1041 struct bss_descriptor * bss;
1043 DECLARE_SSID_BUF(ssid);
1045 lbs_deb_enter(LBS_DEB_ASSOC);
1047 /* FIXME: take channel into account when picking SSIDs if a channel
1051 if (test_bit(ASSOC_FLAG_CHANNEL, &assoc_req->flags))
1052 channel = assoc_req->channel;
1054 lbs_deb_assoc("SSID '%s' requested\n",
1055 print_ssid(ssid, assoc_req->ssid, assoc_req->ssid_len));
1056 if (assoc_req->mode == IW_MODE_INFRA) {
1057 lbs_send_specific_ssid_scan(priv, assoc_req->ssid,
1058 assoc_req->ssid_len);
1060 bss = lbs_find_ssid_in_list(priv, assoc_req->ssid,
1061 assoc_req->ssid_len, NULL, IW_MODE_INFRA, channel);
1063 memcpy(&assoc_req->bss, bss, sizeof(struct bss_descriptor));
1064 ret = lbs_try_associate(priv, assoc_req);
1066 lbs_deb_assoc("SSID not found; cannot associate\n");
1068 } else if (assoc_req->mode == IW_MODE_ADHOC) {
1069 /* Scan for the network, do not save previous results. Stale
1070 * scan data will cause us to join a non-existant adhoc network
1072 lbs_send_specific_ssid_scan(priv, assoc_req->ssid,
1073 assoc_req->ssid_len);
1075 /* Search for the requested SSID in the scan table */
1076 bss = lbs_find_ssid_in_list(priv, assoc_req->ssid,
1077 assoc_req->ssid_len, NULL, IW_MODE_ADHOC, channel);
1079 lbs_deb_assoc("SSID found, will join\n");
1080 memcpy(&assoc_req->bss, bss, sizeof(struct bss_descriptor));
1081 lbs_adhoc_join(priv, assoc_req);
1083 /* else send START command */
1084 lbs_deb_assoc("SSID not found, creating adhoc network\n");
1085 memcpy(&assoc_req->bss.ssid, &assoc_req->ssid,
1087 assoc_req->bss.ssid_len = assoc_req->ssid_len;
1088 lbs_adhoc_start(priv, assoc_req);
1092 lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
1097 static int assoc_helper_bssid(struct lbs_private *priv,
1098 struct assoc_request * assoc_req)
1101 struct bss_descriptor * bss;
1103 lbs_deb_enter_args(LBS_DEB_ASSOC, "BSSID %pM", assoc_req->bssid);
1105 /* Search for index position in list for requested MAC */
1106 bss = lbs_find_bssid_in_list(priv, assoc_req->bssid,
1109 lbs_deb_assoc("ASSOC: WAP: BSSID %pM not found, "
1110 "cannot associate.\n", assoc_req->bssid);
1114 memcpy(&assoc_req->bss, bss, sizeof(struct bss_descriptor));
1115 if (assoc_req->mode == IW_MODE_INFRA) {
1116 ret = lbs_try_associate(priv, assoc_req);
1117 lbs_deb_assoc("ASSOC: lbs_try_associate(bssid) returned %d\n",
1119 } else if (assoc_req->mode == IW_MODE_ADHOC) {
1120 lbs_adhoc_join(priv, assoc_req);
1124 lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
1129 static int assoc_helper_associate(struct lbs_private *priv,
1130 struct assoc_request * assoc_req)
1132 int ret = 0, done = 0;
1134 lbs_deb_enter(LBS_DEB_ASSOC);
1136 /* If we're given and 'any' BSSID, try associating based on SSID */
1138 if (test_bit(ASSOC_FLAG_BSSID, &assoc_req->flags)) {
1139 if (compare_ether_addr(bssid_any, assoc_req->bssid)
1140 && compare_ether_addr(bssid_off, assoc_req->bssid)) {
1141 ret = assoc_helper_bssid(priv, assoc_req);
1146 if (!done && test_bit(ASSOC_FLAG_SSID, &assoc_req->flags)) {
1147 ret = assoc_helper_essid(priv, assoc_req);
1150 lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
1155 static int assoc_helper_mode(struct lbs_private *priv,
1156 struct assoc_request * assoc_req)
1160 lbs_deb_enter(LBS_DEB_ASSOC);
1162 if (assoc_req->mode == priv->mode)
1165 if (assoc_req->mode == IW_MODE_INFRA) {
1166 if (priv->psstate != PS_STATE_FULL_POWER)
1167 lbs_ps_wakeup(priv, CMD_OPTION_WAITFORRSP);
1168 priv->psmode = LBS802_11POWERMODECAM;
1171 priv->mode = assoc_req->mode;
1172 ret = lbs_set_snmp_mib(priv, SNMP_MIB_OID_BSS_TYPE, assoc_req->mode);
1175 lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
1179 static int assoc_helper_channel(struct lbs_private *priv,
1180 struct assoc_request * assoc_req)
1184 lbs_deb_enter(LBS_DEB_ASSOC);
1186 ret = lbs_update_channel(priv);
1188 lbs_deb_assoc("ASSOC: channel: error getting channel.\n");
1192 if (assoc_req->channel == priv->curbssparams.channel)
1195 if (priv->mesh_dev) {
1196 /* Change mesh channel first; 21.p21 firmware won't let
1197 you change channel otherwise (even though it'll return
1199 lbs_mesh_config(priv, CMD_ACT_MESH_CONFIG_STOP,
1200 assoc_req->channel);
1203 lbs_deb_assoc("ASSOC: channel: %d -> %d\n",
1204 priv->curbssparams.channel, assoc_req->channel);
1206 ret = lbs_set_channel(priv, assoc_req->channel);
1208 lbs_deb_assoc("ASSOC: channel: error setting channel.\n");
1210 /* FIXME: shouldn't need to grab the channel _again_ after setting
1211 * it since the firmware is supposed to return the new channel, but
1213 ret = lbs_update_channel(priv);
1215 lbs_deb_assoc("ASSOC: channel: error getting channel.\n");
1219 if (assoc_req->channel != priv->curbssparams.channel) {
1220 lbs_deb_assoc("ASSOC: channel: failed to update channel to %d\n",
1221 assoc_req->channel);
1225 if ( assoc_req->secinfo.wep_enabled
1226 && (assoc_req->wep_keys[0].len
1227 || assoc_req->wep_keys[1].len
1228 || assoc_req->wep_keys[2].len
1229 || assoc_req->wep_keys[3].len)) {
1230 /* Make sure WEP keys are re-sent to firmware */
1231 set_bit(ASSOC_FLAG_WEP_KEYS, &assoc_req->flags);
1234 /* Must restart/rejoin adhoc networks after channel change */
1235 set_bit(ASSOC_FLAG_SSID, &assoc_req->flags);
1239 lbs_mesh_config(priv, CMD_ACT_MESH_CONFIG_START,
1240 priv->curbssparams.channel);
1243 lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
1248 static int assoc_helper_wep_keys(struct lbs_private *priv,
1249 struct assoc_request *assoc_req)
1254 lbs_deb_enter(LBS_DEB_ASSOC);
1256 /* Set or remove WEP keys */
1257 if (assoc_req->wep_keys[0].len || assoc_req->wep_keys[1].len ||
1258 assoc_req->wep_keys[2].len || assoc_req->wep_keys[3].len)
1259 ret = lbs_cmd_802_11_set_wep(priv, CMD_ACT_ADD, assoc_req);
1261 ret = lbs_cmd_802_11_set_wep(priv, CMD_ACT_REMOVE, assoc_req);
1266 /* enable/disable the MAC's WEP packet filter */
1267 if (assoc_req->secinfo.wep_enabled)
1268 priv->mac_control |= CMD_ACT_MAC_WEP_ENABLE;
1270 priv->mac_control &= ~CMD_ACT_MAC_WEP_ENABLE;
1272 lbs_set_mac_control(priv);
1274 mutex_lock(&priv->lock);
1276 /* Copy WEP keys into priv wep key fields */
1277 for (i = 0; i < 4; i++) {
1278 memcpy(&priv->wep_keys[i], &assoc_req->wep_keys[i],
1279 sizeof(struct enc_key));
1281 priv->wep_tx_keyidx = assoc_req->wep_tx_keyidx;
1283 mutex_unlock(&priv->lock);
1286 lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
1290 static int assoc_helper_secinfo(struct lbs_private *priv,
1291 struct assoc_request * assoc_req)
1297 lbs_deb_enter(LBS_DEB_ASSOC);
1299 memcpy(&priv->secinfo, &assoc_req->secinfo,
1300 sizeof(struct lbs_802_11_security));
1302 lbs_set_mac_control(priv);
1304 /* If RSN is already enabled, don't try to enable it again, since
1305 * ENABLE_RSN resets internal state machines and will clobber the
1306 * 4-way WPA handshake.
1309 /* Get RSN enabled/disabled */
1310 ret = lbs_cmd_802_11_enable_rsn(priv, CMD_ACT_GET, &rsn);
1312 lbs_deb_assoc("Failed to get RSN status: %d\n", ret);
1316 /* Don't re-enable RSN if it's already enabled */
1317 do_wpa = assoc_req->secinfo.WPAenabled || assoc_req->secinfo.WPA2enabled;
1321 /* Set RSN enabled/disabled */
1322 ret = lbs_cmd_802_11_enable_rsn(priv, CMD_ACT_SET, &do_wpa);
1325 lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
1330 static int assoc_helper_wpa_keys(struct lbs_private *priv,
1331 struct assoc_request * assoc_req)
1334 unsigned int flags = assoc_req->flags;
1336 lbs_deb_enter(LBS_DEB_ASSOC);
1338 /* Work around older firmware bug where WPA unicast and multicast
1339 * keys must be set independently. Seen in SDIO parts with firmware
1343 if (test_bit(ASSOC_FLAG_WPA_UCAST_KEY, &assoc_req->flags)) {
1344 clear_bit(ASSOC_FLAG_WPA_MCAST_KEY, &assoc_req->flags);
1345 ret = lbs_cmd_802_11_key_material(priv, CMD_ACT_SET, assoc_req);
1346 assoc_req->flags = flags;
1352 memcpy(&priv->wpa_unicast_key, &assoc_req->wpa_unicast_key,
1353 sizeof(struct enc_key));
1355 if (test_bit(ASSOC_FLAG_WPA_MCAST_KEY, &assoc_req->flags)) {
1356 clear_bit(ASSOC_FLAG_WPA_UCAST_KEY, &assoc_req->flags);
1358 ret = lbs_cmd_802_11_key_material(priv, CMD_ACT_SET, assoc_req);
1359 assoc_req->flags = flags;
1361 memcpy(&priv->wpa_mcast_key, &assoc_req->wpa_mcast_key,
1362 sizeof(struct enc_key));
1366 lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
1371 static int assoc_helper_wpa_ie(struct lbs_private *priv,
1372 struct assoc_request * assoc_req)
1376 lbs_deb_enter(LBS_DEB_ASSOC);
1378 if (assoc_req->secinfo.WPAenabled || assoc_req->secinfo.WPA2enabled) {
1379 memcpy(&priv->wpa_ie, &assoc_req->wpa_ie, assoc_req->wpa_ie_len);
1380 priv->wpa_ie_len = assoc_req->wpa_ie_len;
1382 memset(&priv->wpa_ie, 0, MAX_WPA_IE_LEN);
1383 priv->wpa_ie_len = 0;
1386 lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
1391 static int should_deauth_infrastructure(struct lbs_private *priv,
1392 struct assoc_request * assoc_req)
1396 if (priv->connect_status != LBS_CONNECTED)
1399 lbs_deb_enter(LBS_DEB_ASSOC);
1400 if (test_bit(ASSOC_FLAG_SSID, &assoc_req->flags)) {
1401 lbs_deb_assoc("Deauthenticating due to new SSID\n");
1406 if (test_bit(ASSOC_FLAG_SECINFO, &assoc_req->flags)) {
1407 if (priv->secinfo.auth_mode != assoc_req->secinfo.auth_mode) {
1408 lbs_deb_assoc("Deauthenticating due to new security\n");
1414 if (test_bit(ASSOC_FLAG_BSSID, &assoc_req->flags)) {
1415 lbs_deb_assoc("Deauthenticating due to new BSSID\n");
1420 if (test_bit(ASSOC_FLAG_CHANNEL, &assoc_req->flags)) {
1421 lbs_deb_assoc("Deauthenticating due to channel switch\n");
1426 /* FIXME: deal with 'auto' mode somehow */
1427 if (test_bit(ASSOC_FLAG_MODE, &assoc_req->flags)) {
1428 if (assoc_req->mode != IW_MODE_INFRA) {
1429 lbs_deb_assoc("Deauthenticating due to leaving "
1437 lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
1442 static int should_stop_adhoc(struct lbs_private *priv,
1443 struct assoc_request * assoc_req)
1445 lbs_deb_enter(LBS_DEB_ASSOC);
1447 if (priv->connect_status != LBS_CONNECTED)
1450 if (lbs_ssid_cmp(priv->curbssparams.ssid,
1451 priv->curbssparams.ssid_len,
1452 assoc_req->ssid, assoc_req->ssid_len) != 0)
1455 /* FIXME: deal with 'auto' mode somehow */
1456 if (test_bit(ASSOC_FLAG_MODE, &assoc_req->flags)) {
1457 if (assoc_req->mode != IW_MODE_ADHOC)
1461 if (test_bit(ASSOC_FLAG_CHANNEL, &assoc_req->flags)) {
1462 if (assoc_req->channel != priv->curbssparams.channel)
1466 lbs_deb_leave(LBS_DEB_ASSOC);
1472 * @brief This function finds the best SSID in the Scan List
1474 * Search the scan table for the best SSID that also matches the current
1475 * adapter network preference (infrastructure or adhoc)
1477 * @param priv A pointer to struct lbs_private
1479 * @return index in BSSID list
1481 static struct bss_descriptor *lbs_find_best_ssid_in_list(
1482 struct lbs_private *priv, uint8_t mode)
1484 uint8_t bestrssi = 0;
1485 struct bss_descriptor *iter_bss;
1486 struct bss_descriptor *best_bss = NULL;
1488 lbs_deb_enter(LBS_DEB_SCAN);
1490 mutex_lock(&priv->lock);
1492 list_for_each_entry(iter_bss, &priv->network_list, list) {
1496 if (!is_network_compatible(priv, iter_bss, mode))
1498 if (SCAN_RSSI(iter_bss->rssi) <= bestrssi)
1500 bestrssi = SCAN_RSSI(iter_bss->rssi);
1501 best_bss = iter_bss;
1505 if (SCAN_RSSI(iter_bss->rssi) <= bestrssi)
1507 bestrssi = SCAN_RSSI(iter_bss->rssi);
1508 best_bss = iter_bss;
1513 mutex_unlock(&priv->lock);
1514 lbs_deb_leave_args(LBS_DEB_SCAN, "best_bss %p", best_bss);
1519 * @brief Find the best AP
1521 * Used from association worker.
1523 * @param priv A pointer to struct lbs_private structure
1524 * @param pSSID A pointer to AP's ssid
1526 * @return 0--success, otherwise--fail
1528 static int lbs_find_best_network_ssid(struct lbs_private *priv,
1529 uint8_t *out_ssid, uint8_t *out_ssid_len, uint8_t preferred_mode,
1533 struct bss_descriptor *found;
1535 lbs_deb_enter(LBS_DEB_SCAN);
1537 priv->scan_ssid_len = 0;
1538 lbs_scan_networks(priv, 1);
1539 if (priv->surpriseremoved)
1542 found = lbs_find_best_ssid_in_list(priv, preferred_mode);
1543 if (found && (found->ssid_len > 0)) {
1544 memcpy(out_ssid, &found->ssid, IW_ESSID_MAX_SIZE);
1545 *out_ssid_len = found->ssid_len;
1546 *out_mode = found->mode;
1551 lbs_deb_leave_args(LBS_DEB_SCAN, "ret %d", ret);
1556 void lbs_association_worker(struct work_struct *work)
1558 struct lbs_private *priv = container_of(work, struct lbs_private,
1560 struct assoc_request * assoc_req = NULL;
1562 int find_any_ssid = 0;
1563 DECLARE_SSID_BUF(ssid);
1565 lbs_deb_enter(LBS_DEB_ASSOC);
1567 mutex_lock(&priv->lock);
1568 assoc_req = priv->pending_assoc_req;
1569 priv->pending_assoc_req = NULL;
1570 priv->in_progress_assoc_req = assoc_req;
1571 mutex_unlock(&priv->lock);
1577 "Association Request:\n"
1584 " secinfo: %s%s%s\n"
1587 print_ssid(ssid, assoc_req->ssid, assoc_req->ssid_len),
1588 assoc_req->channel, assoc_req->band, assoc_req->mode,
1590 assoc_req->secinfo.WPAenabled ? " WPA" : "",
1591 assoc_req->secinfo.WPA2enabled ? " WPA2" : "",
1592 assoc_req->secinfo.wep_enabled ? " WEP" : "",
1593 assoc_req->secinfo.auth_mode);
1595 /* If 'any' SSID was specified, find an SSID to associate with */
1596 if (test_bit(ASSOC_FLAG_SSID, &assoc_req->flags)
1597 && !assoc_req->ssid_len)
1600 /* But don't use 'any' SSID if there's a valid locked BSSID to use */
1601 if (test_bit(ASSOC_FLAG_BSSID, &assoc_req->flags)) {
1602 if (compare_ether_addr(assoc_req->bssid, bssid_any)
1603 && compare_ether_addr(assoc_req->bssid, bssid_off))
1607 if (find_any_ssid) {
1608 u8 new_mode = assoc_req->mode;
1610 ret = lbs_find_best_network_ssid(priv, assoc_req->ssid,
1611 &assoc_req->ssid_len, assoc_req->mode, &new_mode);
1613 lbs_deb_assoc("Could not find best network\n");
1618 /* Ensure we switch to the mode of the AP */
1619 if (assoc_req->mode == IW_MODE_AUTO) {
1620 set_bit(ASSOC_FLAG_MODE, &assoc_req->flags);
1621 assoc_req->mode = new_mode;
1626 * Check if the attributes being changing require deauthentication
1627 * from the currently associated infrastructure access point.
1629 if (priv->mode == IW_MODE_INFRA) {
1630 if (should_deauth_infrastructure(priv, assoc_req)) {
1631 ret = lbs_cmd_80211_deauthenticate(priv,
1632 priv->curbssparams.bssid,
1633 WLAN_REASON_DEAUTH_LEAVING);
1635 lbs_deb_assoc("Deauthentication due to new "
1636 "configuration request failed: %d\n",
1640 } else if (priv->mode == IW_MODE_ADHOC) {
1641 if (should_stop_adhoc(priv, assoc_req)) {
1642 ret = lbs_adhoc_stop(priv);
1644 lbs_deb_assoc("Teardown of AdHoc network due to "
1645 "new configuration request failed: %d\n",
1652 /* Send the various configuration bits to the firmware */
1653 if (test_bit(ASSOC_FLAG_MODE, &assoc_req->flags)) {
1654 ret = assoc_helper_mode(priv, assoc_req);
1659 if (test_bit(ASSOC_FLAG_CHANNEL, &assoc_req->flags)) {
1660 ret = assoc_helper_channel(priv, assoc_req);
1665 if ( test_bit(ASSOC_FLAG_WEP_KEYS, &assoc_req->flags)
1666 || test_bit(ASSOC_FLAG_WEP_TX_KEYIDX, &assoc_req->flags)) {
1667 ret = assoc_helper_wep_keys(priv, assoc_req);
1672 if (test_bit(ASSOC_FLAG_SECINFO, &assoc_req->flags)) {
1673 ret = assoc_helper_secinfo(priv, assoc_req);
1678 if (test_bit(ASSOC_FLAG_WPA_IE, &assoc_req->flags)) {
1679 ret = assoc_helper_wpa_ie(priv, assoc_req);
1684 if (test_bit(ASSOC_FLAG_WPA_MCAST_KEY, &assoc_req->flags)
1685 || test_bit(ASSOC_FLAG_WPA_UCAST_KEY, &assoc_req->flags)) {
1686 ret = assoc_helper_wpa_keys(priv, assoc_req);
1691 /* SSID/BSSID should be the _last_ config option set, because they
1692 * trigger the association attempt.
1694 if (test_bit(ASSOC_FLAG_BSSID, &assoc_req->flags)
1695 || test_bit(ASSOC_FLAG_SSID, &assoc_req->flags)) {
1698 ret = assoc_helper_associate(priv, assoc_req);
1700 lbs_deb_assoc("ASSOC: association unsuccessful: %d\n",
1705 if (priv->connect_status != LBS_CONNECTED) {
1706 lbs_deb_assoc("ASSOC: association unsuccessful, "
1712 lbs_deb_assoc("associated to %pM\n",
1713 priv->curbssparams.bssid);
1714 lbs_prepare_and_send_command(priv,
1716 0, CMD_OPTION_WAITFORRSP, 0, NULL);
1724 lbs_deb_assoc("ASSOC: reconfiguration attempt unsuccessful: %d\n",
1728 mutex_lock(&priv->lock);
1729 priv->in_progress_assoc_req = NULL;
1730 mutex_unlock(&priv->lock);
1734 lbs_deb_leave(LBS_DEB_ASSOC);
1739 * Caller MUST hold any necessary locks
1741 struct assoc_request *lbs_get_association_request(struct lbs_private *priv)
1743 struct assoc_request * assoc_req;
1745 lbs_deb_enter(LBS_DEB_ASSOC);
1746 if (!priv->pending_assoc_req) {
1747 priv->pending_assoc_req = kzalloc(sizeof(struct assoc_request),
1749 if (!priv->pending_assoc_req) {
1750 lbs_pr_info("Not enough memory to allocate association"
1756 /* Copy current configuration attributes to the association request,
1757 * but don't overwrite any that are already set.
1759 assoc_req = priv->pending_assoc_req;
1760 if (!test_bit(ASSOC_FLAG_SSID, &assoc_req->flags)) {
1761 memcpy(&assoc_req->ssid, &priv->curbssparams.ssid,
1763 assoc_req->ssid_len = priv->curbssparams.ssid_len;
1766 if (!test_bit(ASSOC_FLAG_CHANNEL, &assoc_req->flags))
1767 assoc_req->channel = priv->curbssparams.channel;
1769 if (!test_bit(ASSOC_FLAG_BAND, &assoc_req->flags))
1770 assoc_req->band = priv->curbssparams.band;
1772 if (!test_bit(ASSOC_FLAG_MODE, &assoc_req->flags))
1773 assoc_req->mode = priv->mode;
1775 if (!test_bit(ASSOC_FLAG_BSSID, &assoc_req->flags)) {
1776 memcpy(&assoc_req->bssid, priv->curbssparams.bssid,
1780 if (!test_bit(ASSOC_FLAG_WEP_KEYS, &assoc_req->flags)) {
1782 for (i = 0; i < 4; i++) {
1783 memcpy(&assoc_req->wep_keys[i], &priv->wep_keys[i],
1784 sizeof(struct enc_key));
1788 if (!test_bit(ASSOC_FLAG_WEP_TX_KEYIDX, &assoc_req->flags))
1789 assoc_req->wep_tx_keyidx = priv->wep_tx_keyidx;
1791 if (!test_bit(ASSOC_FLAG_WPA_MCAST_KEY, &assoc_req->flags)) {
1792 memcpy(&assoc_req->wpa_mcast_key, &priv->wpa_mcast_key,
1793 sizeof(struct enc_key));
1796 if (!test_bit(ASSOC_FLAG_WPA_UCAST_KEY, &assoc_req->flags)) {
1797 memcpy(&assoc_req->wpa_unicast_key, &priv->wpa_unicast_key,
1798 sizeof(struct enc_key));
1801 if (!test_bit(ASSOC_FLAG_SECINFO, &assoc_req->flags)) {
1802 memcpy(&assoc_req->secinfo, &priv->secinfo,
1803 sizeof(struct lbs_802_11_security));
1806 if (!test_bit(ASSOC_FLAG_WPA_IE, &assoc_req->flags)) {
1807 memcpy(&assoc_req->wpa_ie, &priv->wpa_ie,
1809 assoc_req->wpa_ie_len = priv->wpa_ie_len;
1812 lbs_deb_leave(LBS_DEB_ASSOC);
1818 * @brief Deauthenticate from a specific BSS
1820 * @param priv A pointer to struct lbs_private structure
1821 * @param bssid The specific BSS to deauthenticate from
1822 * @param reason The 802.11 sec. 7.3.1.7 Reason Code for deauthenticating
1824 * @return 0 on success, error on failure
1826 int lbs_cmd_80211_deauthenticate(struct lbs_private *priv, u8 bssid[ETH_ALEN],
1829 struct cmd_ds_802_11_deauthenticate cmd;
1832 lbs_deb_enter(LBS_DEB_JOIN);
1834 memset(&cmd, 0, sizeof(cmd));
1835 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1836 memcpy(cmd.macaddr, &bssid[0], ETH_ALEN);
1837 cmd.reasoncode = cpu_to_le16(reason);
1839 ret = lbs_cmd_with_response(priv, CMD_802_11_DEAUTHENTICATE, &cmd);
1841 /* Clean up everything even if there was an error; can't assume that
1842 * we're still authenticated to the AP after trying to deauth.
1844 lbs_mac_event_disconnected(priv);
1846 lbs_deb_leave(LBS_DEB_JOIN);