2 * Implement cfg80211 ("iw") support.
4 * Copyright (C) 2009 M&N Solutions GmbH, 61191 Rosbach, Germany
5 * Holger Schurig <hs4233@mail.mn-solutions.de>
9 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
11 #include <linux/hardirq.h>
12 #include <linux/sched.h>
13 #include <linux/wait.h>
14 #include <linux/slab.h>
15 #include <linux/ieee80211.h>
16 #include <net/cfg80211.h>
17 #include <asm/unaligned.h>
25 #define CHAN2G(_channel, _freq, _flags) { \
26 .band = IEEE80211_BAND_2GHZ, \
27 .center_freq = (_freq), \
28 .hw_value = (_channel), \
30 .max_antenna_gain = 0, \
34 static struct ieee80211_channel lbs_2ghz_channels[] = {
51 #define RATETAB_ENT(_rate, _hw_value, _flags) { \
53 .hw_value = (_hw_value), \
58 /* Table 6 in section 3.2.1.1 */
59 static struct ieee80211_rate lbs_rates[] = {
60 RATETAB_ENT(10, 0, 0),
61 RATETAB_ENT(20, 1, 0),
62 RATETAB_ENT(55, 2, 0),
63 RATETAB_ENT(110, 3, 0),
64 RATETAB_ENT(60, 9, 0),
65 RATETAB_ENT(90, 6, 0),
66 RATETAB_ENT(120, 7, 0),
67 RATETAB_ENT(180, 8, 0),
68 RATETAB_ENT(240, 9, 0),
69 RATETAB_ENT(360, 10, 0),
70 RATETAB_ENT(480, 11, 0),
71 RATETAB_ENT(540, 12, 0),
74 static struct ieee80211_supported_band lbs_band_2ghz = {
75 .channels = lbs_2ghz_channels,
76 .n_channels = ARRAY_SIZE(lbs_2ghz_channels),
77 .bitrates = lbs_rates,
78 .n_bitrates = ARRAY_SIZE(lbs_rates),
82 static const u32 cipher_suites[] = {
83 WLAN_CIPHER_SUITE_WEP40,
84 WLAN_CIPHER_SUITE_WEP104,
85 WLAN_CIPHER_SUITE_TKIP,
86 WLAN_CIPHER_SUITE_CCMP,
89 /* Time to stay on the channel */
90 #define LBS_DWELL_PASSIVE 100
91 #define LBS_DWELL_ACTIVE 40
94 /***************************************************************************
95 * Misc utility functions
97 * TLVs are Marvell specific. They are very similar to IEs, they have the
98 * same structure: type, length, data*. The only difference: for IEs, the
99 * type and length are u8, but for TLVs they're __le16.
103 * Convert NL80211's auth_type to the one from Libertas, see chapter 5.9.1
104 * in the firmware spec
106 static u8 lbs_auth_to_authtype(enum nl80211_auth_type auth_type)
111 case NL80211_AUTHTYPE_OPEN_SYSTEM:
112 case NL80211_AUTHTYPE_SHARED_KEY:
115 case NL80211_AUTHTYPE_AUTOMATIC:
116 ret = NL80211_AUTHTYPE_OPEN_SYSTEM;
118 case NL80211_AUTHTYPE_NETWORK_EAP:
122 /* silence compiler */
130 * Various firmware commands need the list of supported rates, but with
131 * the hight-bit set for basic rates
133 static int lbs_add_rates(u8 *rates)
137 for (i = 0; i < ARRAY_SIZE(lbs_rates); i++) {
138 u8 rate = lbs_rates[i].bitrate / 5;
139 if (rate == 0x02 || rate == 0x04 ||
140 rate == 0x0b || rate == 0x16)
144 return ARRAY_SIZE(lbs_rates);
148 /***************************************************************************
149 * TLV utility functions
151 * TLVs are Marvell specific. They are very similar to IEs, they have the
152 * same structure: type, length, data*. The only difference: for IEs, the
153 * type and length are u8, but for TLVs they're __le16.
160 #define LBS_MAX_SSID_TLV_SIZE \
161 (sizeof(struct mrvl_ie_header) \
162 + IEEE80211_MAX_SSID_LEN)
164 static int lbs_add_ssid_tlv(u8 *tlv, const u8 *ssid, int ssid_len)
166 struct mrvl_ie_ssid_param_set *ssid_tlv = (void *)tlv;
171 * ssid 4d 4e 54 45 53 54
173 ssid_tlv->header.type = cpu_to_le16(TLV_TYPE_SSID);
174 ssid_tlv->header.len = cpu_to_le16(ssid_len);
175 memcpy(ssid_tlv->ssid, ssid, ssid_len);
176 return sizeof(ssid_tlv->header) + ssid_len;
181 * Add channel list TLV (section 8.4.2)
183 * Actual channel data comes from priv->wdev->wiphy->channels.
185 #define LBS_MAX_CHANNEL_LIST_TLV_SIZE \
186 (sizeof(struct mrvl_ie_header) \
187 + (LBS_SCAN_BEFORE_NAP * sizeof(struct chanscanparamset)))
189 static int lbs_add_channel_list_tlv(struct lbs_private *priv, u8 *tlv,
190 int last_channel, int active_scan)
192 int chanscanparamsize = sizeof(struct chanscanparamset) *
193 (last_channel - priv->scan_channel);
195 struct mrvl_ie_header *header = (void *) tlv;
198 * TLV-ID CHANLIST 01 01
200 * channel 00 01 00 00 00 64 00
204 * min scan time 00 00
205 * max scan time 64 00
206 * channel 2 00 02 00 00 00 64 00
210 header->type = cpu_to_le16(TLV_TYPE_CHANLIST);
211 header->len = cpu_to_le16(chanscanparamsize);
212 tlv += sizeof(struct mrvl_ie_header);
214 /* lbs_deb_scan("scan: channels %d to %d\n", priv->scan_channel,
216 memset(tlv, 0, chanscanparamsize);
218 while (priv->scan_channel < last_channel) {
219 struct chanscanparamset *param = (void *) tlv;
221 param->radiotype = CMD_SCAN_RADIO_TYPE_BG;
223 priv->scan_req->channels[priv->scan_channel]->hw_value;
225 param->maxscantime = cpu_to_le16(LBS_DWELL_ACTIVE);
227 param->chanscanmode.passivescan = 1;
228 param->maxscantime = cpu_to_le16(LBS_DWELL_PASSIVE);
230 tlv += sizeof(struct chanscanparamset);
231 priv->scan_channel++;
233 return sizeof(struct mrvl_ie_header) + chanscanparamsize;
240 * The rates are in lbs_bg_rates[], but for the 802.11b
241 * rates the high bit is set. We add this TLV only because
242 * there's a firmware which otherwise doesn't report all
245 #define LBS_MAX_RATES_TLV_SIZE \
246 (sizeof(struct mrvl_ie_header) \
247 + (ARRAY_SIZE(lbs_rates)))
249 /* Adds a TLV with all rates the hardware supports */
250 static int lbs_add_supported_rates_tlv(u8 *tlv)
253 struct mrvl_ie_rates_param_set *rate_tlv = (void *)tlv;
258 * rates 82 84 8b 96 0c 12 18 24 30 48 60 6c
260 rate_tlv->header.type = cpu_to_le16(TLV_TYPE_RATES);
261 tlv += sizeof(rate_tlv->header);
262 i = lbs_add_rates(tlv);
264 rate_tlv->header.len = cpu_to_le16(i);
265 return sizeof(rate_tlv->header) + i;
268 /* Add common rates from a TLV and return the new end of the TLV */
270 add_ie_rates(u8 *tlv, const u8 *ie, int *nrates)
272 int hw, ap, ap_max = ie[1];
275 /* Advance past IE header */
278 lbs_deb_hex(LBS_DEB_ASSOC, "AP IE Rates", (u8 *) ie, ap_max);
280 for (hw = 0; hw < ARRAY_SIZE(lbs_rates); hw++) {
281 hw_rate = lbs_rates[hw].bitrate / 5;
282 for (ap = 0; ap < ap_max; ap++) {
283 if (hw_rate == (ie[ap] & 0x7f)) {
285 *nrates = *nrates + 1;
293 * Adds a TLV with all rates the hardware *and* BSS supports.
295 static int lbs_add_common_rates_tlv(u8 *tlv, struct cfg80211_bss *bss)
297 struct mrvl_ie_rates_param_set *rate_tlv = (void *)tlv;
298 const u8 *rates_eid, *ext_rates_eid;
301 rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SUPP_RATES);
302 ext_rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_EXT_SUPP_RATES);
305 * 01 00 TLV_TYPE_RATES
309 rate_tlv->header.type = cpu_to_le16(TLV_TYPE_RATES);
310 tlv += sizeof(rate_tlv->header);
312 /* Add basic rates */
314 tlv = add_ie_rates(tlv, rates_eid, &n);
316 /* Add extended rates, if any */
318 tlv = add_ie_rates(tlv, ext_rates_eid, &n);
320 lbs_deb_assoc("assoc: bss had no basic rate IE\n");
321 /* Fallback: add basic 802.11b rates */
329 rate_tlv->header.len = cpu_to_le16(n);
330 return sizeof(rate_tlv->header) + n;
337 * This is only needed for newer firmware (V9 and up).
339 #define LBS_MAX_AUTH_TYPE_TLV_SIZE \
340 sizeof(struct mrvl_ie_auth_type)
342 static int lbs_add_auth_type_tlv(u8 *tlv, enum nl80211_auth_type auth_type)
344 struct mrvl_ie_auth_type *auth = (void *) tlv;
347 * 1f 01 TLV_TYPE_AUTH_TYPE
351 auth->header.type = cpu_to_le16(TLV_TYPE_AUTH_TYPE);
352 auth->header.len = cpu_to_le16(sizeof(*auth)-sizeof(auth->header));
353 auth->auth = cpu_to_le16(lbs_auth_to_authtype(auth_type));
354 return sizeof(*auth);
359 * Add channel (phy ds) TLV
361 #define LBS_MAX_CHANNEL_TLV_SIZE \
362 sizeof(struct mrvl_ie_header)
364 static int lbs_add_channel_tlv(u8 *tlv, u8 channel)
366 struct mrvl_ie_ds_param_set *ds = (void *) tlv;
369 * 03 00 TLV_TYPE_PHY_DS
373 ds->header.type = cpu_to_le16(TLV_TYPE_PHY_DS);
374 ds->header.len = cpu_to_le16(sizeof(*ds)-sizeof(ds->header));
375 ds->channel = channel;
381 * Add (empty) CF param TLV of the form:
383 #define LBS_MAX_CF_PARAM_TLV_SIZE \
384 sizeof(struct mrvl_ie_header)
386 static int lbs_add_cf_param_tlv(u8 *tlv)
388 struct mrvl_ie_cf_param_set *cf = (void *)tlv;
395 * 00 00 cfpmaxduration
396 * 00 00 cfpdurationremaining
398 cf->header.type = cpu_to_le16(TLV_TYPE_CF);
399 cf->header.len = cpu_to_le16(sizeof(*cf)-sizeof(cf->header));
406 #define LBS_MAX_WPA_TLV_SIZE \
407 (sizeof(struct mrvl_ie_header) \
408 + 128 /* TODO: I guessed the size */)
410 static int lbs_add_wpa_tlv(u8 *tlv, const u8 *ie, u8 ie_len)
415 * We need just convert an IE to an TLV. IEs use u8 for the header,
419 * but TLVs use __le16 instead:
426 tlv_len = *tlv++ = *ie++;
430 /* the TLV is two bytes larger than the IE */
438 static int lbs_cfg_set_channel(struct wiphy *wiphy,
439 struct net_device *netdev,
440 struct ieee80211_channel *channel,
441 enum nl80211_channel_type channel_type)
443 struct lbs_private *priv = wiphy_priv(wiphy);
446 lbs_deb_enter_args(LBS_DEB_CFG80211, "iface %s freq %d, type %d",
447 netdev_name(netdev), channel->center_freq, channel_type);
449 if (channel_type != NL80211_CHAN_NO_HT)
452 if (netdev == priv->mesh_dev)
453 ret = lbs_mesh_set_channel(priv, channel->hw_value);
455 ret = lbs_set_channel(priv, channel->hw_value);
458 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
469 * When scanning, the firmware doesn't send a nul packet with the power-safe
470 * bit to the AP. So we cannot stay away from our current channel too long,
471 * otherwise we loose data. So take a "nap" while scanning every other
474 #define LBS_SCAN_BEFORE_NAP 4
478 * When the firmware reports back a scan-result, it gives us an "u8 rssi",
479 * which isn't really an RSSI, as it becomes larger when moving away from
480 * the AP. Anyway, we need to convert that into mBm.
482 #define LBS_SCAN_RSSI_TO_MBM(rssi) \
483 ((-(int)rssi + 3)*100)
485 static int lbs_ret_scan(struct lbs_private *priv, unsigned long dummy,
486 struct cmd_header *resp)
488 struct cmd_ds_802_11_scan_rsp *scanresp = (void *)resp;
496 lbs_deb_enter(LBS_DEB_CFG80211);
498 bsssize = get_unaligned_le16(&scanresp->bssdescriptsize);
500 lbs_deb_scan("scan response: %d BSSs (%d bytes); resp size %d bytes\n",
501 scanresp->nr_sets, bsssize, le16_to_cpu(resp->size));
503 if (scanresp->nr_sets == 0) {
509 * The general layout of the scan response is described in chapter
510 * 5.7.1. Basically we have a common part, then any number of BSS
511 * descriptor sections. Finally we have section with the same number
514 * cmd_ds_802_11_scan_rsp
527 * MrvlIEtypes_TsfFimestamp_t
533 pos = scanresp->bssdesc_and_tlvbuffer;
535 lbs_deb_hex(LBS_DEB_SCAN, "SCAN_RSP", scanresp->bssdesc_and_tlvbuffer,
536 scanresp->bssdescriptsize);
538 tsfdesc = pos + bsssize;
539 tsfsize = 4 + 8 * scanresp->nr_sets;
540 lbs_deb_hex(LBS_DEB_SCAN, "SCAN_TSF", (u8 *) tsfdesc, tsfsize);
542 /* Validity check: we expect a Marvell-Local TLV */
543 i = get_unaligned_le16(tsfdesc);
545 if (i != TLV_TYPE_TSFTIMESTAMP) {
546 lbs_deb_scan("scan response: invalid TSF Timestamp %d\n", i);
551 * Validity check: the TLV holds TSF values with 8 bytes each, so
552 * the size in the TLV must match the nr_sets value
554 i = get_unaligned_le16(tsfdesc);
556 if (i / 8 != scanresp->nr_sets) {
557 lbs_deb_scan("scan response: invalid number of TSF timestamp "
558 "sets (expected %d got %d)\n", scanresp->nr_sets,
563 for (i = 0; i < scanresp->nr_sets; i++) {
572 const u8 *ssid = NULL;
574 DECLARE_SSID_BUF(ssid_buf);
576 int len = get_unaligned_le16(pos);
584 /* Packet time stamp */
586 /* Beacon interval */
587 intvl = get_unaligned_le16(pos);
590 capa = get_unaligned_le16(pos);
593 /* To find out the channel, we must parse the IEs */
596 * 6+1+8+2+2: size of BSSID, RSSI, time stamp, beacon
597 * interval, capabilities
599 ielen = left = len - (6 + 1 + 8 + 2 + 2);
605 if (elen > left || elen == 0) {
606 lbs_deb_scan("scan response: invalid IE fmt\n");
610 if (id == WLAN_EID_DS_PARAMS)
612 if (id == WLAN_EID_SSID) {
620 /* No channel, no luck */
622 struct wiphy *wiphy = priv->wdev->wiphy;
623 int freq = ieee80211_channel_to_frequency(chan_no,
624 IEEE80211_BAND_2GHZ);
625 struct ieee80211_channel *channel =
626 ieee80211_get_channel(wiphy, freq);
628 lbs_deb_scan("scan: %pM, capa %04x, chan %2d, %s, "
630 bssid, capa, chan_no,
631 print_ssid(ssid_buf, ssid, ssid_len),
632 LBS_SCAN_RSSI_TO_MBM(rssi)/100);
635 !(channel->flags & IEEE80211_CHAN_DISABLED))
636 cfg80211_inform_bss(wiphy, channel,
637 bssid, le64_to_cpu(*(__le64 *)tsfdesc),
638 capa, intvl, ie, ielen,
639 LBS_SCAN_RSSI_TO_MBM(rssi),
642 lbs_deb_scan("scan response: missing BSS channel IE\n");
649 lbs_deb_leave_args(LBS_DEB_SCAN, "ret %d", ret);
655 * Our scan command contains a TLV, consting of a SSID TLV, a channel list
656 * TLV and a rates TLV. Determine the maximum size of them:
658 #define LBS_SCAN_MAX_CMD_SIZE \
659 (sizeof(struct cmd_ds_802_11_scan) \
660 + LBS_MAX_SSID_TLV_SIZE \
661 + LBS_MAX_CHANNEL_LIST_TLV_SIZE \
662 + LBS_MAX_RATES_TLV_SIZE)
665 * Assumes priv->scan_req is initialized and valid
666 * Assumes priv->scan_channel is initialized
668 static void lbs_scan_worker(struct work_struct *work)
670 struct lbs_private *priv =
671 container_of(work, struct lbs_private, scan_work.work);
672 struct cmd_ds_802_11_scan *scan_cmd;
673 u8 *tlv; /* pointer into our current, growing TLV storage area */
675 int running, carrier;
677 lbs_deb_enter(LBS_DEB_SCAN);
679 scan_cmd = kzalloc(LBS_SCAN_MAX_CMD_SIZE, GFP_KERNEL);
680 if (scan_cmd == NULL)
681 goto out_no_scan_cmd;
683 /* prepare fixed part of scan command */
684 scan_cmd->bsstype = CMD_BSS_TYPE_ANY;
686 /* stop network while we're away from our main channel */
687 running = !netif_queue_stopped(priv->dev);
688 carrier = netif_carrier_ok(priv->dev);
690 netif_stop_queue(priv->dev);
692 netif_carrier_off(priv->dev);
694 /* prepare fixed part of scan command */
695 tlv = scan_cmd->tlvbuffer;
698 if (priv->scan_req->n_ssids)
699 tlv += lbs_add_ssid_tlv(tlv,
700 priv->scan_req->ssids[0].ssid,
701 priv->scan_req->ssids[0].ssid_len);
703 /* add channel TLVs */
704 last_channel = priv->scan_channel + LBS_SCAN_BEFORE_NAP;
705 if (last_channel > priv->scan_req->n_channels)
706 last_channel = priv->scan_req->n_channels;
707 tlv += lbs_add_channel_list_tlv(priv, tlv, last_channel,
708 priv->scan_req->n_ssids);
711 tlv += lbs_add_supported_rates_tlv(tlv);
713 if (priv->scan_channel < priv->scan_req->n_channels) {
714 cancel_delayed_work(&priv->scan_work);
716 queue_delayed_work(priv->work_thread, &priv->scan_work,
717 msecs_to_jiffies(300));
720 /* This is the final data we are about to send */
721 scan_cmd->hdr.size = cpu_to_le16(tlv - (u8 *)scan_cmd);
722 lbs_deb_hex(LBS_DEB_SCAN, "SCAN_CMD", (void *)scan_cmd,
724 lbs_deb_hex(LBS_DEB_SCAN, "SCAN_TLV", scan_cmd->tlvbuffer,
725 tlv - scan_cmd->tlvbuffer);
727 __lbs_cmd(priv, CMD_802_11_SCAN, &scan_cmd->hdr,
728 le16_to_cpu(scan_cmd->hdr.size),
731 if (priv->scan_channel >= priv->scan_req->n_channels) {
733 if (priv->internal_scan)
734 kfree(priv->scan_req);
736 cfg80211_scan_done(priv->scan_req, false);
738 priv->scan_req = NULL;
739 priv->last_scan = jiffies;
742 /* Restart network */
744 netif_carrier_on(priv->dev);
745 if (running && !priv->tx_pending_len)
746 netif_wake_queue(priv->dev);
750 /* Wake up anything waiting on scan completion */
751 if (priv->scan_req == NULL) {
752 lbs_deb_scan("scan: waking up waiters\n");
753 wake_up_all(&priv->scan_q);
757 lbs_deb_leave(LBS_DEB_SCAN);
760 static void _internal_start_scan(struct lbs_private *priv, bool internal,
761 struct cfg80211_scan_request *request)
763 lbs_deb_enter(LBS_DEB_CFG80211);
765 lbs_deb_scan("scan: ssids %d, channels %d, ie_len %zd\n",
766 request->n_ssids, request->n_channels, request->ie_len);
768 priv->scan_channel = 0;
769 queue_delayed_work(priv->work_thread, &priv->scan_work,
770 msecs_to_jiffies(50));
772 priv->scan_req = request;
773 priv->internal_scan = internal;
775 lbs_deb_leave(LBS_DEB_CFG80211);
778 static int lbs_cfg_scan(struct wiphy *wiphy,
779 struct net_device *dev,
780 struct cfg80211_scan_request *request)
782 struct lbs_private *priv = wiphy_priv(wiphy);
785 lbs_deb_enter(LBS_DEB_CFG80211);
787 if (priv->scan_req || delayed_work_pending(&priv->scan_work)) {
788 /* old scan request not yet processed */
793 _internal_start_scan(priv, false, request);
795 if (priv->surpriseremoved)
799 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
810 void lbs_send_disconnect_notification(struct lbs_private *priv)
812 lbs_deb_enter(LBS_DEB_CFG80211);
814 cfg80211_disconnected(priv->dev,
819 lbs_deb_leave(LBS_DEB_CFG80211);
822 void lbs_send_mic_failureevent(struct lbs_private *priv, u32 event)
824 lbs_deb_enter(LBS_DEB_CFG80211);
826 cfg80211_michael_mic_failure(priv->dev,
828 event == MACREG_INT_CODE_MIC_ERR_MULTICAST ?
829 NL80211_KEYTYPE_GROUP :
830 NL80211_KEYTYPE_PAIRWISE,
835 lbs_deb_leave(LBS_DEB_CFG80211);
847 * This removes all WEP keys
849 static int lbs_remove_wep_keys(struct lbs_private *priv)
851 struct cmd_ds_802_11_set_wep cmd;
854 lbs_deb_enter(LBS_DEB_CFG80211);
856 memset(&cmd, 0, sizeof(cmd));
857 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
858 cmd.keyindex = cpu_to_le16(priv->wep_tx_key);
859 cmd.action = cpu_to_le16(CMD_ACT_REMOVE);
861 ret = lbs_cmd_with_response(priv, CMD_802_11_SET_WEP, &cmd);
863 lbs_deb_leave(LBS_DEB_CFG80211);
870 static int lbs_set_wep_keys(struct lbs_private *priv)
872 struct cmd_ds_802_11_set_wep cmd;
876 lbs_deb_enter(LBS_DEB_CFG80211);
883 * action 02 00 ACT_ADD
885 * type for key 1 01 WEP40
889 * key 1 39 39 39 39 39 00 00 00
890 * 00 00 00 00 00 00 00 00
891 * key 2 00 00 00 00 00 00 00 00
892 * 00 00 00 00 00 00 00 00
893 * key 3 00 00 00 00 00 00 00 00
894 * 00 00 00 00 00 00 00 00
895 * key 4 00 00 00 00 00 00 00 00
897 if (priv->wep_key_len[0] || priv->wep_key_len[1] ||
898 priv->wep_key_len[2] || priv->wep_key_len[3]) {
899 /* Only set wep keys if we have at least one of them */
900 memset(&cmd, 0, sizeof(cmd));
901 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
902 cmd.keyindex = cpu_to_le16(priv->wep_tx_key);
903 cmd.action = cpu_to_le16(CMD_ACT_ADD);
905 for (i = 0; i < 4; i++) {
906 switch (priv->wep_key_len[i]) {
907 case WLAN_KEY_LEN_WEP40:
908 cmd.keytype[i] = CMD_TYPE_WEP_40_BIT;
910 case WLAN_KEY_LEN_WEP104:
911 cmd.keytype[i] = CMD_TYPE_WEP_104_BIT;
917 memcpy(cmd.keymaterial[i], priv->wep_key[i],
918 priv->wep_key_len[i]);
921 ret = lbs_cmd_with_response(priv, CMD_802_11_SET_WEP, &cmd);
923 /* Otherwise remove all wep keys */
924 ret = lbs_remove_wep_keys(priv);
927 lbs_deb_leave(LBS_DEB_CFG80211);
933 * Enable/Disable RSN status
935 static int lbs_enable_rsn(struct lbs_private *priv, int enable)
937 struct cmd_ds_802_11_enable_rsn cmd;
940 lbs_deb_enter_args(LBS_DEB_CFG80211, "%d", enable);
947 * action 01 00 ACT_SET
950 memset(&cmd, 0, sizeof(cmd));
951 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
952 cmd.action = cpu_to_le16(CMD_ACT_SET);
953 cmd.enable = cpu_to_le16(enable);
955 ret = lbs_cmd_with_response(priv, CMD_802_11_ENABLE_RSN, &cmd);
957 lbs_deb_leave(LBS_DEB_CFG80211);
963 * Set WPA/WPA key material
967 * like "struct cmd_ds_802_11_key_material", but with cmd_header. Once we
968 * get rid of WEXT, this should go into host.h
971 struct cmd_key_material {
972 struct cmd_header hdr;
975 struct MrvlIEtype_keyParamSet param;
978 static int lbs_set_key_material(struct lbs_private *priv,
981 u8 *key, u16 key_len)
983 struct cmd_key_material cmd;
986 lbs_deb_enter(LBS_DEB_CFG80211);
989 * Example for WPA (TKIP):
996 * TLV type 00 01 key param
998 * key type 01 00 TKIP
999 * key info 06 00 UNICAST | ENABLED
1003 memset(&cmd, 0, sizeof(cmd));
1004 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1005 cmd.action = cpu_to_le16(CMD_ACT_SET);
1006 cmd.param.type = cpu_to_le16(TLV_TYPE_KEY_MATERIAL);
1007 cmd.param.length = cpu_to_le16(sizeof(cmd.param) - 4);
1008 cmd.param.keytypeid = cpu_to_le16(key_type);
1009 cmd.param.keyinfo = cpu_to_le16(key_info);
1010 cmd.param.keylen = cpu_to_le16(key_len);
1012 memcpy(cmd.param.key, key, key_len);
1014 ret = lbs_cmd_with_response(priv, CMD_802_11_KEY_MATERIAL, &cmd);
1016 lbs_deb_leave(LBS_DEB_CFG80211);
1022 * Sets the auth type (open, shared, etc) in the firmware. That
1023 * we use CMD_802_11_AUTHENTICATE is misleading, this firmware
1024 * command doesn't send an authentication frame at all, it just
1025 * stores the auth_type.
1027 static int lbs_set_authtype(struct lbs_private *priv,
1028 struct cfg80211_connect_params *sme)
1030 struct cmd_ds_802_11_authenticate cmd;
1033 lbs_deb_enter_args(LBS_DEB_CFG80211, "%d", sme->auth_type);
1040 * BSS id 00 13 19 80 da 30
1042 * reserved 00 00 00 00 00 00 00 00 00 00
1044 memset(&cmd, 0, sizeof(cmd));
1045 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1047 memcpy(cmd.bssid, sme->bssid, ETH_ALEN);
1048 /* convert auth_type */
1049 ret = lbs_auth_to_authtype(sme->auth_type);
1054 ret = lbs_cmd_with_response(priv, CMD_802_11_AUTHENTICATE, &cmd);
1057 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1063 * Create association request
1065 #define LBS_ASSOC_MAX_CMD_SIZE \
1066 (sizeof(struct cmd_ds_802_11_associate) \
1067 - 512 /* cmd_ds_802_11_associate.iebuf */ \
1068 + LBS_MAX_SSID_TLV_SIZE \
1069 + LBS_MAX_CHANNEL_TLV_SIZE \
1070 + LBS_MAX_CF_PARAM_TLV_SIZE \
1071 + LBS_MAX_AUTH_TYPE_TLV_SIZE \
1072 + LBS_MAX_WPA_TLV_SIZE)
1074 static int lbs_associate(struct lbs_private *priv,
1075 struct cfg80211_bss *bss,
1076 struct cfg80211_connect_params *sme)
1078 struct cmd_ds_802_11_associate_response *resp;
1079 struct cmd_ds_802_11_associate *cmd = kzalloc(LBS_ASSOC_MAX_CMD_SIZE,
1082 size_t len, resp_ie_len;
1085 u8 *pos = &(cmd->iebuf[0]);
1088 lbs_deb_enter(LBS_DEB_CFG80211);
1100 * BSS id 00 13 19 80 da 30
1101 * capabilities 11 00
1102 * listen interval 0a 00
1103 * beacon interval 00 00
1105 * TLVs xx (up to 512 bytes)
1107 cmd->hdr.command = cpu_to_le16(CMD_802_11_ASSOCIATE);
1109 /* Fill in static fields */
1110 memcpy(cmd->bssid, bss->bssid, ETH_ALEN);
1111 cmd->listeninterval = cpu_to_le16(MRVDRV_DEFAULT_LISTEN_INTERVAL);
1112 cmd->capability = cpu_to_le16(bss->capability);
1115 ssid_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SSID);
1117 pos += lbs_add_ssid_tlv(pos, ssid_eid + 2, ssid_eid[1]);
1119 lbs_deb_assoc("no SSID\n");
1121 /* add DS param TLV */
1123 pos += lbs_add_channel_tlv(pos, bss->channel->hw_value);
1125 lbs_deb_assoc("no channel\n");
1127 /* add (empty) CF param TLV */
1128 pos += lbs_add_cf_param_tlv(pos);
1131 tmp = pos + 4; /* skip Marvell IE header */
1132 pos += lbs_add_common_rates_tlv(pos, bss);
1133 lbs_deb_hex(LBS_DEB_ASSOC, "Common Rates", tmp, pos - tmp);
1135 /* add auth type TLV */
1136 if (MRVL_FW_MAJOR_REV(priv->fwrelease) >= 9)
1137 pos += lbs_add_auth_type_tlv(pos, sme->auth_type);
1139 /* add WPA/WPA2 TLV */
1140 if (sme->ie && sme->ie_len)
1141 pos += lbs_add_wpa_tlv(pos, sme->ie, sme->ie_len);
1143 len = (sizeof(*cmd) - sizeof(cmd->iebuf)) +
1144 (u16)(pos - (u8 *) &cmd->iebuf);
1145 cmd->hdr.size = cpu_to_le16(len);
1147 lbs_deb_hex(LBS_DEB_ASSOC, "ASSOC_CMD", (u8 *) cmd,
1148 le16_to_cpu(cmd->hdr.size));
1150 /* store for later use */
1151 memcpy(priv->assoc_bss, bss->bssid, ETH_ALEN);
1153 ret = lbs_cmd_with_response(priv, CMD_802_11_ASSOCIATE, cmd);
1157 /* generate connect message to cfg80211 */
1159 resp = (void *) cmd; /* recast for easier field access */
1160 status = le16_to_cpu(resp->statuscode);
1162 /* Older FW versions map the IEEE 802.11 Status Code in the association
1163 * response to the following values returned in resp->statuscode:
1165 * IEEE Status Code Marvell Status Code
1166 * 0 -> 0x0000 ASSOC_RESULT_SUCCESS
1167 * 13 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED
1168 * 14 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED
1169 * 15 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED
1170 * 16 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED
1171 * others -> 0x0003 ASSOC_RESULT_REFUSED
1173 * Other response codes:
1174 * 0x0001 -> ASSOC_RESULT_INVALID_PARAMETERS (unused)
1175 * 0x0002 -> ASSOC_RESULT_TIMEOUT (internal timer expired waiting for
1176 * association response from the AP)
1178 if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8) {
1183 lbs_deb_assoc("invalid association parameters\n");
1184 status = WLAN_STATUS_CAPS_UNSUPPORTED;
1187 lbs_deb_assoc("timer expired while waiting for AP\n");
1188 status = WLAN_STATUS_AUTH_TIMEOUT;
1191 lbs_deb_assoc("association refused by AP\n");
1192 status = WLAN_STATUS_ASSOC_DENIED_UNSPEC;
1195 lbs_deb_assoc("authentication refused by AP\n");
1196 status = WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION;
1199 lbs_deb_assoc("association failure %d\n", status);
1200 /* v5 OLPC firmware does return the AP status code if
1201 * it's not one of the values above. Let that through.
1207 lbs_deb_assoc("status %d, statuscode 0x%04x, capability 0x%04x, "
1208 "aid 0x%04x\n", status, le16_to_cpu(resp->statuscode),
1209 le16_to_cpu(resp->capability), le16_to_cpu(resp->aid));
1211 resp_ie_len = le16_to_cpu(resp->hdr.size)
1214 cfg80211_connect_result(priv->dev,
1216 sme->ie, sme->ie_len,
1217 resp->iebuf, resp_ie_len,
1222 /* TODO: get rid of priv->connect_status */
1223 priv->connect_status = LBS_CONNECTED;
1224 netif_carrier_on(priv->dev);
1225 if (!priv->tx_pending_len)
1226 netif_tx_wake_all_queues(priv->dev);
1230 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1234 static struct cfg80211_scan_request *
1235 _new_connect_scan_req(struct wiphy *wiphy, struct cfg80211_connect_params *sme)
1237 struct cfg80211_scan_request *creq = NULL;
1238 int i, n_channels = 0;
1239 enum ieee80211_band band;
1241 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
1242 if (wiphy->bands[band])
1243 n_channels += wiphy->bands[band]->n_channels;
1246 creq = kzalloc(sizeof(*creq) + sizeof(struct cfg80211_ssid) +
1247 n_channels * sizeof(void *),
1252 /* SSIDs come after channels */
1253 creq->ssids = (void *)&creq->channels[n_channels];
1254 creq->n_channels = n_channels;
1257 /* Scan all available channels */
1259 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
1262 if (!wiphy->bands[band])
1265 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
1266 /* ignore disabled channels */
1267 if (wiphy->bands[band]->channels[j].flags &
1268 IEEE80211_CHAN_DISABLED)
1271 creq->channels[i] = &wiphy->bands[band]->channels[j];
1276 /* Set real number of channels specified in creq->channels[] */
1277 creq->n_channels = i;
1279 /* Scan for the SSID we're going to connect to */
1280 memcpy(creq->ssids[0].ssid, sme->ssid, sme->ssid_len);
1281 creq->ssids[0].ssid_len = sme->ssid_len;
1283 /* No channels found... */
1291 static int lbs_cfg_connect(struct wiphy *wiphy, struct net_device *dev,
1292 struct cfg80211_connect_params *sme)
1294 struct lbs_private *priv = wiphy_priv(wiphy);
1295 struct cfg80211_bss *bss = NULL;
1297 u8 preamble = RADIO_PREAMBLE_SHORT;
1299 if (dev == priv->mesh_dev)
1302 lbs_deb_enter(LBS_DEB_CFG80211);
1305 /* Run a scan if one isn't in-progress already and if the last
1306 * scan was done more than 2 seconds ago.
1308 if (priv->scan_req == NULL &&
1309 time_after(jiffies, priv->last_scan + (2 * HZ))) {
1310 struct cfg80211_scan_request *creq;
1312 creq = _new_connect_scan_req(wiphy, sme);
1318 lbs_deb_assoc("assoc: scanning for compatible AP\n");
1319 _internal_start_scan(priv, true, creq);
1322 /* Wait for any in-progress scan to complete */
1323 lbs_deb_assoc("assoc: waiting for scan to complete\n");
1324 wait_event_interruptible_timeout(priv->scan_q,
1325 (priv->scan_req == NULL),
1327 lbs_deb_assoc("assoc: scanning competed\n");
1330 /* Find the BSS we want using available scan results */
1331 bss = cfg80211_get_bss(wiphy, sme->channel, sme->bssid,
1332 sme->ssid, sme->ssid_len,
1333 WLAN_CAPABILITY_ESS, WLAN_CAPABILITY_ESS);
1335 wiphy_err(wiphy, "assoc: bss %pM not in scan results\n",
1340 lbs_deb_assoc("trying %pM\n", bss->bssid);
1341 lbs_deb_assoc("cipher 0x%x, key index %d, key len %d\n",
1342 sme->crypto.cipher_group,
1343 sme->key_idx, sme->key_len);
1345 /* As this is a new connection, clear locally stored WEP keys */
1346 priv->wep_tx_key = 0;
1347 memset(priv->wep_key, 0, sizeof(priv->wep_key));
1348 memset(priv->wep_key_len, 0, sizeof(priv->wep_key_len));
1350 /* set/remove WEP keys */
1351 switch (sme->crypto.cipher_group) {
1352 case WLAN_CIPHER_SUITE_WEP40:
1353 case WLAN_CIPHER_SUITE_WEP104:
1354 /* Store provided WEP keys in priv-> */
1355 priv->wep_tx_key = sme->key_idx;
1356 priv->wep_key_len[sme->key_idx] = sme->key_len;
1357 memcpy(priv->wep_key[sme->key_idx], sme->key, sme->key_len);
1358 /* Set WEP keys and WEP mode */
1359 lbs_set_wep_keys(priv);
1360 priv->mac_control |= CMD_ACT_MAC_WEP_ENABLE;
1361 lbs_set_mac_control(priv);
1362 /* No RSN mode for WEP */
1363 lbs_enable_rsn(priv, 0);
1365 case 0: /* there's no WLAN_CIPHER_SUITE_NONE definition */
1367 * If we don't have no WEP, no WPA and no WPA2,
1368 * we remove all keys like in the WPA/WPA2 setup,
1369 * we just don't set RSN.
1371 * Therefore: fall-through
1373 case WLAN_CIPHER_SUITE_TKIP:
1374 case WLAN_CIPHER_SUITE_CCMP:
1375 /* Remove WEP keys and WEP mode */
1376 lbs_remove_wep_keys(priv);
1377 priv->mac_control &= ~CMD_ACT_MAC_WEP_ENABLE;
1378 lbs_set_mac_control(priv);
1380 /* clear the WPA/WPA2 keys */
1381 lbs_set_key_material(priv,
1382 KEY_TYPE_ID_WEP, /* doesn't matter */
1383 KEY_INFO_WPA_UNICAST,
1385 lbs_set_key_material(priv,
1386 KEY_TYPE_ID_WEP, /* doesn't matter */
1389 /* RSN mode for WPA/WPA2 */
1390 lbs_enable_rsn(priv, sme->crypto.cipher_group != 0);
1393 wiphy_err(wiphy, "unsupported cipher group 0x%x\n",
1394 sme->crypto.cipher_group);
1399 lbs_set_authtype(priv, sme);
1400 lbs_set_radio(priv, preamble, 1);
1402 /* Do the actual association */
1403 ret = lbs_associate(priv, bss, sme);
1407 cfg80211_put_bss(bss);
1408 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1412 static int lbs_cfg_disconnect(struct wiphy *wiphy, struct net_device *dev,
1415 struct lbs_private *priv = wiphy_priv(wiphy);
1416 struct cmd_ds_802_11_deauthenticate cmd;
1418 if (dev == priv->mesh_dev)
1421 lbs_deb_enter_args(LBS_DEB_CFG80211, "reason_code %d", reason_code);
1423 /* store for lbs_cfg_ret_disconnect() */
1424 priv->disassoc_reason = reason_code;
1426 memset(&cmd, 0, sizeof(cmd));
1427 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1428 /* Mildly ugly to use a locally store my own BSSID ... */
1429 memcpy(cmd.macaddr, &priv->assoc_bss, ETH_ALEN);
1430 cmd.reasoncode = cpu_to_le16(reason_code);
1432 if (lbs_cmd_with_response(priv, CMD_802_11_DEAUTHENTICATE, &cmd))
1435 cfg80211_disconnected(priv->dev,
1436 priv->disassoc_reason,
1439 priv->connect_status = LBS_DISCONNECTED;
1445 static int lbs_cfg_set_default_key(struct wiphy *wiphy,
1446 struct net_device *netdev,
1447 u8 key_index, bool unicast,
1450 struct lbs_private *priv = wiphy_priv(wiphy);
1452 if (netdev == priv->mesh_dev)
1455 lbs_deb_enter(LBS_DEB_CFG80211);
1457 if (key_index != priv->wep_tx_key) {
1458 lbs_deb_assoc("set_default_key: to %d\n", key_index);
1459 priv->wep_tx_key = key_index;
1460 lbs_set_wep_keys(priv);
1467 static int lbs_cfg_add_key(struct wiphy *wiphy, struct net_device *netdev,
1468 u8 idx, bool pairwise, const u8 *mac_addr,
1469 struct key_params *params)
1471 struct lbs_private *priv = wiphy_priv(wiphy);
1476 if (netdev == priv->mesh_dev)
1479 lbs_deb_enter(LBS_DEB_CFG80211);
1481 lbs_deb_assoc("add_key: cipher 0x%x, mac_addr %pM\n",
1482 params->cipher, mac_addr);
1483 lbs_deb_assoc("add_key: key index %d, key len %d\n",
1484 idx, params->key_len);
1485 if (params->key_len)
1486 lbs_deb_hex(LBS_DEB_CFG80211, "KEY",
1487 params->key, params->key_len);
1489 lbs_deb_assoc("add_key: seq len %d\n", params->seq_len);
1490 if (params->seq_len)
1491 lbs_deb_hex(LBS_DEB_CFG80211, "SEQ",
1492 params->seq, params->seq_len);
1494 switch (params->cipher) {
1495 case WLAN_CIPHER_SUITE_WEP40:
1496 case WLAN_CIPHER_SUITE_WEP104:
1497 /* actually compare if something has changed ... */
1498 if ((priv->wep_key_len[idx] != params->key_len) ||
1499 memcmp(priv->wep_key[idx],
1500 params->key, params->key_len) != 0) {
1501 priv->wep_key_len[idx] = params->key_len;
1502 memcpy(priv->wep_key[idx],
1503 params->key, params->key_len);
1504 lbs_set_wep_keys(priv);
1507 case WLAN_CIPHER_SUITE_TKIP:
1508 case WLAN_CIPHER_SUITE_CCMP:
1509 key_info = KEY_INFO_WPA_ENABLED | ((idx == 0)
1510 ? KEY_INFO_WPA_UNICAST
1511 : KEY_INFO_WPA_MCAST);
1512 key_type = (params->cipher == WLAN_CIPHER_SUITE_TKIP)
1515 lbs_set_key_material(priv,
1518 params->key, params->key_len);
1521 wiphy_err(wiphy, "unhandled cipher 0x%x\n", params->cipher);
1530 static int lbs_cfg_del_key(struct wiphy *wiphy, struct net_device *netdev,
1531 u8 key_index, bool pairwise, const u8 *mac_addr)
1534 lbs_deb_enter(LBS_DEB_CFG80211);
1536 lbs_deb_assoc("del_key: key_idx %d, mac_addr %pM\n",
1537 key_index, mac_addr);
1540 struct lbs_private *priv = wiphy_priv(wiphy);
1542 * I think can keep this a NO-OP, because:
1544 * - we clear all keys whenever we do lbs_cfg_connect() anyway
1545 * - neither "iw" nor "wpa_supplicant" won't call this during
1546 * an ongoing connection
1547 * - TODO: but I have to check if this is still true when
1548 * I set the AP to periodic re-keying
1549 * - we've not kzallec() something when we've added a key at
1550 * lbs_cfg_connect() or lbs_cfg_add_key().
1552 * This causes lbs_cfg_del_key() only called at disconnect time,
1553 * where we'd just waste time deleting a key that is not going
1554 * to be used anyway.
1556 if (key_index < 3 && priv->wep_key_len[key_index]) {
1557 priv->wep_key_len[key_index] = 0;
1558 lbs_set_wep_keys(priv);
1570 static int lbs_cfg_get_station(struct wiphy *wiphy, struct net_device *dev,
1571 u8 *mac, struct station_info *sinfo)
1573 struct lbs_private *priv = wiphy_priv(wiphy);
1578 lbs_deb_enter(LBS_DEB_CFG80211);
1580 sinfo->filled |= STATION_INFO_TX_BYTES |
1581 STATION_INFO_TX_PACKETS |
1582 STATION_INFO_RX_BYTES |
1583 STATION_INFO_RX_PACKETS;
1584 sinfo->tx_bytes = priv->dev->stats.tx_bytes;
1585 sinfo->tx_packets = priv->dev->stats.tx_packets;
1586 sinfo->rx_bytes = priv->dev->stats.rx_bytes;
1587 sinfo->rx_packets = priv->dev->stats.rx_packets;
1589 /* Get current RSSI */
1590 ret = lbs_get_rssi(priv, &signal, &noise);
1592 sinfo->signal = signal;
1593 sinfo->filled |= STATION_INFO_SIGNAL;
1596 /* Convert priv->cur_rate from hw_value to NL80211 value */
1597 for (i = 0; i < ARRAY_SIZE(lbs_rates); i++) {
1598 if (priv->cur_rate == lbs_rates[i].hw_value) {
1599 sinfo->txrate.legacy = lbs_rates[i].bitrate;
1600 sinfo->filled |= STATION_INFO_TX_BITRATE;
1612 * "Site survey", here just current channel and noise level
1615 static int lbs_get_survey(struct wiphy *wiphy, struct net_device *dev,
1616 int idx, struct survey_info *survey)
1618 struct lbs_private *priv = wiphy_priv(wiphy);
1622 if (dev == priv->mesh_dev)
1628 lbs_deb_enter(LBS_DEB_CFG80211);
1630 survey->channel = ieee80211_get_channel(wiphy,
1631 ieee80211_channel_to_frequency(priv->channel,
1632 IEEE80211_BAND_2GHZ));
1634 ret = lbs_get_rssi(priv, &signal, &noise);
1636 survey->filled = SURVEY_INFO_NOISE_DBM;
1637 survey->noise = noise;
1640 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1651 static int lbs_change_intf(struct wiphy *wiphy, struct net_device *dev,
1652 enum nl80211_iftype type, u32 *flags,
1653 struct vif_params *params)
1655 struct lbs_private *priv = wiphy_priv(wiphy);
1658 if (dev == priv->mesh_dev)
1661 lbs_deb_enter(LBS_DEB_CFG80211);
1664 case NL80211_IFTYPE_MONITOR:
1665 ret = lbs_set_monitor_mode(priv, 1);
1667 case NL80211_IFTYPE_STATION:
1668 if (priv->wdev->iftype == NL80211_IFTYPE_MONITOR)
1669 ret = lbs_set_monitor_mode(priv, 0);
1671 ret = lbs_set_snmp_mib(priv, SNMP_MIB_OID_BSS_TYPE, 1);
1673 case NL80211_IFTYPE_ADHOC:
1674 if (priv->wdev->iftype == NL80211_IFTYPE_MONITOR)
1675 ret = lbs_set_monitor_mode(priv, 0);
1677 ret = lbs_set_snmp_mib(priv, SNMP_MIB_OID_BSS_TYPE, 2);
1684 priv->wdev->iftype = type;
1686 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1697 * The firmware needs the following bits masked out of the beacon-derived
1698 * capability field when associating/joining to a BSS:
1699 * 9 (QoS), 11 (APSD), 12 (unused), 14 (unused), 15 (unused)
1701 #define CAPINFO_MASK (~(0xda00))
1704 static void lbs_join_post(struct lbs_private *priv,
1705 struct cfg80211_ibss_params *params,
1706 u8 *bssid, u16 capability)
1708 u8 fake_ie[2 + IEEE80211_MAX_SSID_LEN + /* ssid */
1709 2 + 4 + /* basic rates */
1710 2 + 1 + /* DS parameter */
1712 2 + 8]; /* extended rates */
1715 lbs_deb_enter(LBS_DEB_CFG80211);
1718 * For cfg80211_inform_bss, we'll need a fake IE, as we can't get
1719 * the real IE from the firmware. So we fabricate a fake IE based on
1720 * what the firmware actually sends (sniffed with wireshark).
1723 *fake++ = WLAN_EID_SSID;
1724 *fake++ = params->ssid_len;
1725 memcpy(fake, params->ssid, params->ssid_len);
1726 fake += params->ssid_len;
1727 /* Fake supported basic rates IE */
1728 *fake++ = WLAN_EID_SUPP_RATES;
1734 /* Fake DS channel IE */
1735 *fake++ = WLAN_EID_DS_PARAMS;
1737 *fake++ = params->channel->hw_value;
1738 /* Fake IBSS params IE */
1739 *fake++ = WLAN_EID_IBSS_PARAMS;
1741 *fake++ = 0; /* ATIM=0 */
1743 /* Fake extended rates IE, TODO: don't add this for 802.11b only,
1744 * but I don't know how this could be checked */
1745 *fake++ = WLAN_EID_EXT_SUPP_RATES;
1755 lbs_deb_hex(LBS_DEB_CFG80211, "IE", fake_ie, fake - fake_ie);
1757 cfg80211_inform_bss(priv->wdev->wiphy,
1762 params->beacon_interval,
1763 fake_ie, fake - fake_ie,
1766 memcpy(priv->wdev->ssid, params->ssid, params->ssid_len);
1767 priv->wdev->ssid_len = params->ssid_len;
1769 cfg80211_ibss_joined(priv->dev, bssid, GFP_KERNEL);
1771 /* TODO: consider doing this at MACREG_INT_CODE_LINK_SENSED time */
1772 priv->connect_status = LBS_CONNECTED;
1773 netif_carrier_on(priv->dev);
1774 if (!priv->tx_pending_len)
1775 netif_wake_queue(priv->dev);
1777 lbs_deb_leave(LBS_DEB_CFG80211);
1780 static int lbs_ibss_join_existing(struct lbs_private *priv,
1781 struct cfg80211_ibss_params *params,
1782 struct cfg80211_bss *bss)
1784 const u8 *rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SUPP_RATES);
1785 struct cmd_ds_802_11_ad_hoc_join cmd;
1786 u8 preamble = RADIO_PREAMBLE_SHORT;
1789 lbs_deb_enter(LBS_DEB_CFG80211);
1791 /* TODO: set preamble based on scan result */
1792 ret = lbs_set_radio(priv, preamble, 1);
1797 * Example CMD_802_11_AD_HOC_JOIN command:
1799 * command 2c 00 CMD_802_11_AD_HOC_JOIN
1803 * bssid 02 27 27 97 2f 96
1804 * ssid 49 42 53 53 00 00 00 00
1805 * 00 00 00 00 00 00 00 00
1806 * 00 00 00 00 00 00 00 00
1807 * 00 00 00 00 00 00 00 00
1808 * type 02 CMD_BSS_TYPE_IBSS
1809 * beacon period 64 00
1811 * timestamp 00 00 00 00 00 00 00 00
1812 * localtime 00 00 00 00 00 00 00 00
1816 * reserveed 00 00 00 00
1819 * IE IBSS atim 00 00
1820 * reserved 00 00 00 00
1822 * rates 82 84 8b 96 0c 12 18 24 30 48 60 6c 00
1823 * fail timeout ff 00
1826 memset(&cmd, 0, sizeof(cmd));
1827 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1829 memcpy(cmd.bss.bssid, bss->bssid, ETH_ALEN);
1830 memcpy(cmd.bss.ssid, params->ssid, params->ssid_len);
1831 cmd.bss.type = CMD_BSS_TYPE_IBSS;
1832 cmd.bss.beaconperiod = cpu_to_le16(params->beacon_interval);
1833 cmd.bss.ds.header.id = WLAN_EID_DS_PARAMS;
1834 cmd.bss.ds.header.len = 1;
1835 cmd.bss.ds.channel = params->channel->hw_value;
1836 cmd.bss.ibss.header.id = WLAN_EID_IBSS_PARAMS;
1837 cmd.bss.ibss.header.len = 2;
1838 cmd.bss.ibss.atimwindow = 0;
1839 cmd.bss.capability = cpu_to_le16(bss->capability & CAPINFO_MASK);
1841 /* set rates to the intersection of our rates and the rates in the
1844 lbs_add_rates(cmd.bss.rates);
1847 u8 rates_max = rates_eid[1];
1848 u8 *rates = cmd.bss.rates;
1849 for (hw = 0; hw < ARRAY_SIZE(lbs_rates); hw++) {
1850 u8 hw_rate = lbs_rates[hw].bitrate / 5;
1851 for (i = 0; i < rates_max; i++) {
1852 if (hw_rate == (rates_eid[i+2] & 0x7f)) {
1853 u8 rate = rates_eid[i+2];
1854 if (rate == 0x02 || rate == 0x04 ||
1855 rate == 0x0b || rate == 0x16)
1863 /* Only v8 and below support setting this */
1864 if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8) {
1865 cmd.failtimeout = cpu_to_le16(MRVDRV_ASSOCIATION_TIME_OUT);
1866 cmd.probedelay = cpu_to_le16(CMD_SCAN_PROBE_DELAY_TIME);
1868 ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_JOIN, &cmd);
1873 * This is a sample response to CMD_802_11_AD_HOC_JOIN:
1881 lbs_join_post(priv, params, bss->bssid, bss->capability);
1884 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1890 static int lbs_ibss_start_new(struct lbs_private *priv,
1891 struct cfg80211_ibss_params *params)
1893 struct cmd_ds_802_11_ad_hoc_start cmd;
1894 struct cmd_ds_802_11_ad_hoc_result *resp =
1895 (struct cmd_ds_802_11_ad_hoc_result *) &cmd;
1896 u8 preamble = RADIO_PREAMBLE_SHORT;
1900 lbs_deb_enter(LBS_DEB_CFG80211);
1902 ret = lbs_set_radio(priv, preamble, 1);
1907 * Example CMD_802_11_AD_HOC_START command:
1909 * command 2b 00 CMD_802_11_AD_HOC_START
1913 * ssid 54 45 53 54 00 00 00 00
1914 * 00 00 00 00 00 00 00 00
1915 * 00 00 00 00 00 00 00 00
1916 * 00 00 00 00 00 00 00 00
1918 * beacon period 64 00
1922 * IE IBSS atim 00 00
1923 * reserved 00 00 00 00
1927 * reserved 00 00 00 00
1930 * rates 82 84 8b 96 (basic rates with have bit 7 set)
1931 * 0c 12 18 24 30 48 60 6c
1934 memset(&cmd, 0, sizeof(cmd));
1935 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1936 memcpy(cmd.ssid, params->ssid, params->ssid_len);
1937 cmd.bsstype = CMD_BSS_TYPE_IBSS;
1938 cmd.beaconperiod = cpu_to_le16(params->beacon_interval);
1939 cmd.ibss.header.id = WLAN_EID_IBSS_PARAMS;
1940 cmd.ibss.header.len = 2;
1941 cmd.ibss.atimwindow = 0;
1942 cmd.ds.header.id = WLAN_EID_DS_PARAMS;
1943 cmd.ds.header.len = 1;
1944 cmd.ds.channel = params->channel->hw_value;
1945 /* Only v8 and below support setting probe delay */
1946 if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8)
1947 cmd.probedelay = cpu_to_le16(CMD_SCAN_PROBE_DELAY_TIME);
1948 /* TODO: mix in WLAN_CAPABILITY_PRIVACY */
1949 capability = WLAN_CAPABILITY_IBSS;
1950 cmd.capability = cpu_to_le16(capability);
1951 lbs_add_rates(cmd.rates);
1954 ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_START, &cmd);
1959 * This is a sample response to CMD_802_11_AD_HOC_JOIN:
1966 * bssid 02 2b 7b 0f 86 0e
1968 lbs_join_post(priv, params, resp->bssid, capability);
1971 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1976 static int lbs_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1977 struct cfg80211_ibss_params *params)
1979 struct lbs_private *priv = wiphy_priv(wiphy);
1981 struct cfg80211_bss *bss;
1982 DECLARE_SSID_BUF(ssid_buf);
1984 if (dev == priv->mesh_dev)
1987 lbs_deb_enter(LBS_DEB_CFG80211);
1989 if (!params->channel) {
1994 ret = lbs_set_channel(priv, params->channel->hw_value);
1998 /* Search if someone is beaconing. This assumes that the
1999 * bss list is populated already */
2000 bss = cfg80211_get_bss(wiphy, params->channel, params->bssid,
2001 params->ssid, params->ssid_len,
2002 WLAN_CAPABILITY_IBSS, WLAN_CAPABILITY_IBSS);
2005 ret = lbs_ibss_join_existing(priv, params, bss);
2006 cfg80211_put_bss(bss);
2008 ret = lbs_ibss_start_new(priv, params);
2012 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
2017 static int lbs_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2019 struct lbs_private *priv = wiphy_priv(wiphy);
2020 struct cmd_ds_802_11_ad_hoc_stop cmd;
2023 if (dev == priv->mesh_dev)
2026 lbs_deb_enter(LBS_DEB_CFG80211);
2028 memset(&cmd, 0, sizeof(cmd));
2029 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
2030 ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_STOP, &cmd);
2032 /* TODO: consider doing this at MACREG_INT_CODE_ADHOC_BCN_LOST time */
2033 lbs_mac_event_disconnected(priv);
2035 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
2046 static struct cfg80211_ops lbs_cfg80211_ops = {
2047 .set_channel = lbs_cfg_set_channel,
2048 .scan = lbs_cfg_scan,
2049 .connect = lbs_cfg_connect,
2050 .disconnect = lbs_cfg_disconnect,
2051 .add_key = lbs_cfg_add_key,
2052 .del_key = lbs_cfg_del_key,
2053 .set_default_key = lbs_cfg_set_default_key,
2054 .get_station = lbs_cfg_get_station,
2055 .dump_survey = lbs_get_survey,
2056 .change_virtual_intf = lbs_change_intf,
2057 .join_ibss = lbs_join_ibss,
2058 .leave_ibss = lbs_leave_ibss,
2063 * At this time lbs_private *priv doesn't even exist, so we just allocate
2064 * memory and don't initialize the wiphy further. This is postponed until we
2065 * can talk to the firmware and happens at registration time in
2066 * lbs_cfg_wiphy_register().
2068 struct wireless_dev *lbs_cfg_alloc(struct device *dev)
2071 struct wireless_dev *wdev;
2073 lbs_deb_enter(LBS_DEB_CFG80211);
2075 wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL);
2077 dev_err(dev, "cannot allocate wireless device\n");
2078 return ERR_PTR(-ENOMEM);
2081 wdev->wiphy = wiphy_new(&lbs_cfg80211_ops, sizeof(struct lbs_private));
2083 dev_err(dev, "cannot allocate wiphy\n");
2088 lbs_deb_leave(LBS_DEB_CFG80211);
2093 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
2094 return ERR_PTR(ret);
2098 static void lbs_cfg_set_regulatory_hint(struct lbs_private *priv)
2100 struct region_code_mapping {
2105 /* Section 5.17.2 */
2106 static const struct region_code_mapping regmap[] = {
2107 {"US ", 0x10}, /* US FCC */
2108 {"CA ", 0x20}, /* Canada */
2109 {"EU ", 0x30}, /* ETSI */
2110 {"ES ", 0x31}, /* Spain */
2111 {"FR ", 0x32}, /* France */
2112 {"JP ", 0x40}, /* Japan */
2116 lbs_deb_enter(LBS_DEB_CFG80211);
2118 for (i = 0; i < ARRAY_SIZE(regmap); i++)
2119 if (regmap[i].code == priv->regioncode) {
2120 regulatory_hint(priv->wdev->wiphy, regmap[i].cn);
2124 lbs_deb_leave(LBS_DEB_CFG80211);
2129 * This function get's called after lbs_setup_firmware() determined the
2130 * firmware capabities. So we can setup the wiphy according to our
2131 * hardware/firmware.
2133 int lbs_cfg_register(struct lbs_private *priv)
2135 struct wireless_dev *wdev = priv->wdev;
2138 lbs_deb_enter(LBS_DEB_CFG80211);
2140 wdev->wiphy->max_scan_ssids = 1;
2141 wdev->wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
2143 wdev->wiphy->interface_modes =
2144 BIT(NL80211_IFTYPE_STATION) |
2145 BIT(NL80211_IFTYPE_ADHOC);
2146 if (lbs_rtap_supported(priv))
2147 wdev->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR);
2148 if (lbs_mesh_activated(priv))
2149 wdev->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MESH_POINT);
2151 wdev->wiphy->bands[IEEE80211_BAND_2GHZ] = &lbs_band_2ghz;
2154 * We could check priv->fwcapinfo && FW_CAPINFO_WPA, but I have
2155 * never seen a firmware without WPA
2157 wdev->wiphy->cipher_suites = cipher_suites;
2158 wdev->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
2159 wdev->wiphy->reg_notifier = lbs_reg_notifier;
2161 ret = wiphy_register(wdev->wiphy);
2163 pr_err("cannot register wiphy device\n");
2165 priv->wiphy_registered = true;
2167 ret = register_netdev(priv->dev);
2169 pr_err("cannot register network device\n");
2171 INIT_DELAYED_WORK(&priv->scan_work, lbs_scan_worker);
2173 lbs_cfg_set_regulatory_hint(priv);
2175 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
2179 int lbs_reg_notifier(struct wiphy *wiphy,
2180 struct regulatory_request *request)
2182 struct lbs_private *priv = wiphy_priv(wiphy);
2185 lbs_deb_enter_args(LBS_DEB_CFG80211, "cfg80211 regulatory domain "
2186 "callback for domain %c%c\n", request->alpha2[0],
2187 request->alpha2[1]);
2189 ret = lbs_set_11d_domain_info(priv, request, wiphy->bands);
2191 lbs_deb_leave(LBS_DEB_CFG80211);
2195 void lbs_scan_deinit(struct lbs_private *priv)
2197 lbs_deb_enter(LBS_DEB_CFG80211);
2198 cancel_delayed_work_sync(&priv->scan_work);
2202 void lbs_cfg_free(struct lbs_private *priv)
2204 struct wireless_dev *wdev = priv->wdev;
2206 lbs_deb_enter(LBS_DEB_CFG80211);
2211 if (priv->wiphy_registered)
2212 wiphy_unregister(wdev->wiphy);
2215 wiphy_free(wdev->wiphy);