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 = NL80211_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 int 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 if (ap_max > MAX_RATES) {
276 lbs_deb_assoc("invalid rates\n");
279 /* Advance past IE header */
282 lbs_deb_hex(LBS_DEB_ASSOC, "AP IE Rates", (u8 *) ie, ap_max);
284 for (hw = 0; hw < ARRAY_SIZE(lbs_rates); hw++) {
285 hw_rate = lbs_rates[hw].bitrate / 5;
286 for (ap = 0; ap < ap_max; ap++) {
287 if (hw_rate == (ie[ap] & 0x7f)) {
289 *nrates = *nrates + 1;
297 * Adds a TLV with all rates the hardware *and* BSS supports.
299 static int lbs_add_common_rates_tlv(u8 *tlv, struct cfg80211_bss *bss)
301 struct mrvl_ie_rates_param_set *rate_tlv = (void *)tlv;
302 const u8 *rates_eid, *ext_rates_eid;
306 rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SUPP_RATES);
307 ext_rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_EXT_SUPP_RATES);
310 * 01 00 TLV_TYPE_RATES
314 rate_tlv->header.type = cpu_to_le16(TLV_TYPE_RATES);
315 tlv += sizeof(rate_tlv->header);
317 /* Add basic rates */
319 tlv = add_ie_rates(tlv, rates_eid, &n);
321 /* Add extended rates, if any */
323 tlv = add_ie_rates(tlv, ext_rates_eid, &n);
325 lbs_deb_assoc("assoc: bss had no basic rate IE\n");
326 /* Fallback: add basic 802.11b rates */
335 rate_tlv->header.len = cpu_to_le16(n);
336 return sizeof(rate_tlv->header) + n;
343 * This is only needed for newer firmware (V9 and up).
345 #define LBS_MAX_AUTH_TYPE_TLV_SIZE \
346 sizeof(struct mrvl_ie_auth_type)
348 static int lbs_add_auth_type_tlv(u8 *tlv, enum nl80211_auth_type auth_type)
350 struct mrvl_ie_auth_type *auth = (void *) tlv;
353 * 1f 01 TLV_TYPE_AUTH_TYPE
357 auth->header.type = cpu_to_le16(TLV_TYPE_AUTH_TYPE);
358 auth->header.len = cpu_to_le16(sizeof(*auth)-sizeof(auth->header));
359 auth->auth = cpu_to_le16(lbs_auth_to_authtype(auth_type));
360 return sizeof(*auth);
365 * Add channel (phy ds) TLV
367 #define LBS_MAX_CHANNEL_TLV_SIZE \
368 sizeof(struct mrvl_ie_header)
370 static int lbs_add_channel_tlv(u8 *tlv, u8 channel)
372 struct mrvl_ie_ds_param_set *ds = (void *) tlv;
375 * 03 00 TLV_TYPE_PHY_DS
379 ds->header.type = cpu_to_le16(TLV_TYPE_PHY_DS);
380 ds->header.len = cpu_to_le16(sizeof(*ds)-sizeof(ds->header));
381 ds->channel = channel;
387 * Add (empty) CF param TLV of the form:
389 #define LBS_MAX_CF_PARAM_TLV_SIZE \
390 sizeof(struct mrvl_ie_header)
392 static int lbs_add_cf_param_tlv(u8 *tlv)
394 struct mrvl_ie_cf_param_set *cf = (void *)tlv;
401 * 00 00 cfpmaxduration
402 * 00 00 cfpdurationremaining
404 cf->header.type = cpu_to_le16(TLV_TYPE_CF);
405 cf->header.len = cpu_to_le16(sizeof(*cf)-sizeof(cf->header));
412 #define LBS_MAX_WPA_TLV_SIZE \
413 (sizeof(struct mrvl_ie_header) \
414 + 128 /* TODO: I guessed the size */)
416 static int lbs_add_wpa_tlv(u8 *tlv, const u8 *ie, u8 ie_len)
421 * We need just convert an IE to an TLV. IEs use u8 for the header,
425 * but TLVs use __le16 instead:
432 tlv_len = *tlv++ = *ie++;
436 /* the TLV is two bytes larger than the IE */
444 static int lbs_cfg_set_monitor_channel(struct wiphy *wiphy,
445 struct cfg80211_chan_def *chandef)
447 struct lbs_private *priv = wiphy_priv(wiphy);
450 lbs_deb_enter_args(LBS_DEB_CFG80211, "freq %d, type %d",
451 chandef->chan->center_freq,
452 cfg80211_get_chandef_type(chandef));
454 if (cfg80211_get_chandef_type(chandef) != NL80211_CHAN_NO_HT)
457 ret = lbs_set_channel(priv, chandef->chan->hw_value);
460 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
464 static int lbs_cfg_set_mesh_channel(struct wiphy *wiphy,
465 struct net_device *netdev,
466 struct ieee80211_channel *channel)
468 struct lbs_private *priv = wiphy_priv(wiphy);
471 lbs_deb_enter_args(LBS_DEB_CFG80211, "iface %s freq %d",
472 netdev_name(netdev), channel->center_freq);
474 if (netdev != priv->mesh_dev)
477 ret = lbs_mesh_set_channel(priv, channel->hw_value);
480 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
491 * When scanning, the firmware doesn't send a nul packet with the power-safe
492 * bit to the AP. So we cannot stay away from our current channel too long,
493 * otherwise we loose data. So take a "nap" while scanning every other
496 #define LBS_SCAN_BEFORE_NAP 4
500 * When the firmware reports back a scan-result, it gives us an "u8 rssi",
501 * which isn't really an RSSI, as it becomes larger when moving away from
502 * the AP. Anyway, we need to convert that into mBm.
504 #define LBS_SCAN_RSSI_TO_MBM(rssi) \
505 ((-(int)rssi + 3)*100)
507 static int lbs_ret_scan(struct lbs_private *priv, unsigned long dummy,
508 struct cmd_header *resp)
510 struct cfg80211_bss *bss;
511 struct cmd_ds_802_11_scan_rsp *scanresp = (void *)resp;
519 lbs_deb_enter(LBS_DEB_CFG80211);
521 bsssize = get_unaligned_le16(&scanresp->bssdescriptsize);
523 lbs_deb_scan("scan response: %d BSSs (%d bytes); resp size %d bytes\n",
524 scanresp->nr_sets, bsssize, le16_to_cpu(resp->size));
526 if (scanresp->nr_sets == 0) {
532 * The general layout of the scan response is described in chapter
533 * 5.7.1. Basically we have a common part, then any number of BSS
534 * descriptor sections. Finally we have section with the same number
537 * cmd_ds_802_11_scan_rsp
550 * MrvlIEtypes_TsfFimestamp_t
556 pos = scanresp->bssdesc_and_tlvbuffer;
558 lbs_deb_hex(LBS_DEB_SCAN, "SCAN_RSP", scanresp->bssdesc_and_tlvbuffer,
559 scanresp->bssdescriptsize);
561 tsfdesc = pos + bsssize;
562 tsfsize = 4 + 8 * scanresp->nr_sets;
563 lbs_deb_hex(LBS_DEB_SCAN, "SCAN_TSF", (u8 *) tsfdesc, tsfsize);
565 /* Validity check: we expect a Marvell-Local TLV */
566 i = get_unaligned_le16(tsfdesc);
568 if (i != TLV_TYPE_TSFTIMESTAMP) {
569 lbs_deb_scan("scan response: invalid TSF Timestamp %d\n", i);
574 * Validity check: the TLV holds TSF values with 8 bytes each, so
575 * the size in the TLV must match the nr_sets value
577 i = get_unaligned_le16(tsfdesc);
579 if (i / 8 != scanresp->nr_sets) {
580 lbs_deb_scan("scan response: invalid number of TSF timestamp "
581 "sets (expected %d got %d)\n", scanresp->nr_sets,
586 for (i = 0; i < scanresp->nr_sets; i++) {
595 const u8 *ssid = NULL;
598 int len = get_unaligned_le16(pos);
606 /* Packet time stamp */
608 /* Beacon interval */
609 intvl = get_unaligned_le16(pos);
612 capa = get_unaligned_le16(pos);
615 /* To find out the channel, we must parse the IEs */
618 * 6+1+8+2+2: size of BSSID, RSSI, time stamp, beacon
619 * interval, capabilities
621 ielen = left = len - (6 + 1 + 8 + 2 + 2);
628 lbs_deb_scan("scan response: invalid IE fmt\n");
632 if (id == WLAN_EID_DS_PARAMS)
634 if (id == WLAN_EID_SSID) {
642 /* No channel, no luck */
644 struct wiphy *wiphy = priv->wdev->wiphy;
645 int freq = ieee80211_channel_to_frequency(chan_no,
647 struct ieee80211_channel *channel =
648 ieee80211_get_channel(wiphy, freq);
650 lbs_deb_scan("scan: %pM, capa %04x, chan %2d, %*pE, %d dBm\n",
651 bssid, capa, chan_no, ssid_len, ssid,
652 LBS_SCAN_RSSI_TO_MBM(rssi)/100);
655 !(channel->flags & IEEE80211_CHAN_DISABLED)) {
656 bss = cfg80211_inform_bss(wiphy, channel,
657 CFG80211_BSS_FTYPE_UNKNOWN,
658 bssid, get_unaligned_le64(tsfdesc),
659 capa, intvl, ie, ielen,
660 LBS_SCAN_RSSI_TO_MBM(rssi),
662 cfg80211_put_bss(wiphy, bss);
665 lbs_deb_scan("scan response: missing BSS channel IE\n");
672 lbs_deb_leave_args(LBS_DEB_SCAN, "ret %d", ret);
678 * Our scan command contains a TLV, consting of a SSID TLV, a channel list
679 * TLV and a rates TLV. Determine the maximum size of them:
681 #define LBS_SCAN_MAX_CMD_SIZE \
682 (sizeof(struct cmd_ds_802_11_scan) \
683 + LBS_MAX_SSID_TLV_SIZE \
684 + LBS_MAX_CHANNEL_LIST_TLV_SIZE \
685 + LBS_MAX_RATES_TLV_SIZE)
688 * Assumes priv->scan_req is initialized and valid
689 * Assumes priv->scan_channel is initialized
691 static void lbs_scan_worker(struct work_struct *work)
693 struct lbs_private *priv =
694 container_of(work, struct lbs_private, scan_work.work);
695 struct cmd_ds_802_11_scan *scan_cmd;
696 u8 *tlv; /* pointer into our current, growing TLV storage area */
698 int running, carrier;
700 lbs_deb_enter(LBS_DEB_SCAN);
702 scan_cmd = kzalloc(LBS_SCAN_MAX_CMD_SIZE, GFP_KERNEL);
703 if (scan_cmd == NULL)
704 goto out_no_scan_cmd;
706 /* prepare fixed part of scan command */
707 scan_cmd->bsstype = CMD_BSS_TYPE_ANY;
709 /* stop network while we're away from our main channel */
710 running = !netif_queue_stopped(priv->dev);
711 carrier = netif_carrier_ok(priv->dev);
713 netif_stop_queue(priv->dev);
715 netif_carrier_off(priv->dev);
717 /* prepare fixed part of scan command */
718 tlv = scan_cmd->tlvbuffer;
721 if (priv->scan_req->n_ssids && priv->scan_req->ssids[0].ssid_len > 0)
722 tlv += lbs_add_ssid_tlv(tlv,
723 priv->scan_req->ssids[0].ssid,
724 priv->scan_req->ssids[0].ssid_len);
726 /* add channel TLVs */
727 last_channel = priv->scan_channel + LBS_SCAN_BEFORE_NAP;
728 if (last_channel > priv->scan_req->n_channels)
729 last_channel = priv->scan_req->n_channels;
730 tlv += lbs_add_channel_list_tlv(priv, tlv, last_channel,
731 priv->scan_req->n_ssids);
734 tlv += lbs_add_supported_rates_tlv(tlv);
736 if (priv->scan_channel < priv->scan_req->n_channels) {
737 cancel_delayed_work(&priv->scan_work);
738 if (netif_running(priv->dev))
739 queue_delayed_work(priv->work_thread, &priv->scan_work,
740 msecs_to_jiffies(300));
743 /* This is the final data we are about to send */
744 scan_cmd->hdr.size = cpu_to_le16(tlv - (u8 *)scan_cmd);
745 lbs_deb_hex(LBS_DEB_SCAN, "SCAN_CMD", (void *)scan_cmd,
747 lbs_deb_hex(LBS_DEB_SCAN, "SCAN_TLV", scan_cmd->tlvbuffer,
748 tlv - scan_cmd->tlvbuffer);
750 __lbs_cmd(priv, CMD_802_11_SCAN, &scan_cmd->hdr,
751 le16_to_cpu(scan_cmd->hdr.size),
754 if (priv->scan_channel >= priv->scan_req->n_channels) {
756 cancel_delayed_work(&priv->scan_work);
760 /* Restart network */
762 netif_carrier_on(priv->dev);
763 if (running && !priv->tx_pending_len)
764 netif_wake_queue(priv->dev);
768 /* Wake up anything waiting on scan completion */
769 if (priv->scan_req == NULL) {
770 lbs_deb_scan("scan: waking up waiters\n");
771 wake_up_all(&priv->scan_q);
775 lbs_deb_leave(LBS_DEB_SCAN);
778 static void _internal_start_scan(struct lbs_private *priv, bool internal,
779 struct cfg80211_scan_request *request)
781 lbs_deb_enter(LBS_DEB_CFG80211);
783 lbs_deb_scan("scan: ssids %d, channels %d, ie_len %zd\n",
784 request->n_ssids, request->n_channels, request->ie_len);
786 priv->scan_channel = 0;
787 priv->scan_req = request;
788 priv->internal_scan = internal;
790 queue_delayed_work(priv->work_thread, &priv->scan_work,
791 msecs_to_jiffies(50));
793 lbs_deb_leave(LBS_DEB_CFG80211);
797 * Clean up priv->scan_req. Should be used to handle the allocation details.
799 void lbs_scan_done(struct lbs_private *priv)
801 WARN_ON(!priv->scan_req);
803 if (priv->internal_scan) {
804 kfree(priv->scan_req);
806 struct cfg80211_scan_info info = {
810 cfg80211_scan_done(priv->scan_req, &info);
813 priv->scan_req = NULL;
816 static int lbs_cfg_scan(struct wiphy *wiphy,
817 struct cfg80211_scan_request *request)
819 struct lbs_private *priv = wiphy_priv(wiphy);
822 lbs_deb_enter(LBS_DEB_CFG80211);
824 if (priv->scan_req || delayed_work_pending(&priv->scan_work)) {
825 /* old scan request not yet processed */
830 _internal_start_scan(priv, false, request);
832 if (priv->surpriseremoved)
836 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
847 void lbs_send_disconnect_notification(struct lbs_private *priv,
848 bool locally_generated)
850 lbs_deb_enter(LBS_DEB_CFG80211);
852 cfg80211_disconnected(priv->dev, 0, NULL, 0, locally_generated,
855 lbs_deb_leave(LBS_DEB_CFG80211);
858 void lbs_send_mic_failureevent(struct lbs_private *priv, u32 event)
860 lbs_deb_enter(LBS_DEB_CFG80211);
862 cfg80211_michael_mic_failure(priv->dev,
864 event == MACREG_INT_CODE_MIC_ERR_MULTICAST ?
865 NL80211_KEYTYPE_GROUP :
866 NL80211_KEYTYPE_PAIRWISE,
871 lbs_deb_leave(LBS_DEB_CFG80211);
883 * This removes all WEP keys
885 static int lbs_remove_wep_keys(struct lbs_private *priv)
887 struct cmd_ds_802_11_set_wep cmd;
890 lbs_deb_enter(LBS_DEB_CFG80211);
892 memset(&cmd, 0, sizeof(cmd));
893 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
894 cmd.keyindex = cpu_to_le16(priv->wep_tx_key);
895 cmd.action = cpu_to_le16(CMD_ACT_REMOVE);
897 ret = lbs_cmd_with_response(priv, CMD_802_11_SET_WEP, &cmd);
899 lbs_deb_leave(LBS_DEB_CFG80211);
906 static int lbs_set_wep_keys(struct lbs_private *priv)
908 struct cmd_ds_802_11_set_wep cmd;
912 lbs_deb_enter(LBS_DEB_CFG80211);
919 * action 02 00 ACT_ADD
921 * type for key 1 01 WEP40
925 * key 1 39 39 39 39 39 00 00 00
926 * 00 00 00 00 00 00 00 00
927 * key 2 00 00 00 00 00 00 00 00
928 * 00 00 00 00 00 00 00 00
929 * key 3 00 00 00 00 00 00 00 00
930 * 00 00 00 00 00 00 00 00
931 * key 4 00 00 00 00 00 00 00 00
933 if (priv->wep_key_len[0] || priv->wep_key_len[1] ||
934 priv->wep_key_len[2] || priv->wep_key_len[3]) {
935 /* Only set wep keys if we have at least one of them */
936 memset(&cmd, 0, sizeof(cmd));
937 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
938 cmd.keyindex = cpu_to_le16(priv->wep_tx_key);
939 cmd.action = cpu_to_le16(CMD_ACT_ADD);
941 for (i = 0; i < 4; i++) {
942 switch (priv->wep_key_len[i]) {
943 case WLAN_KEY_LEN_WEP40:
944 cmd.keytype[i] = CMD_TYPE_WEP_40_BIT;
946 case WLAN_KEY_LEN_WEP104:
947 cmd.keytype[i] = CMD_TYPE_WEP_104_BIT;
953 memcpy(cmd.keymaterial[i], priv->wep_key[i],
954 priv->wep_key_len[i]);
957 ret = lbs_cmd_with_response(priv, CMD_802_11_SET_WEP, &cmd);
959 /* Otherwise remove all wep keys */
960 ret = lbs_remove_wep_keys(priv);
963 lbs_deb_leave(LBS_DEB_CFG80211);
969 * Enable/Disable RSN status
971 static int lbs_enable_rsn(struct lbs_private *priv, int enable)
973 struct cmd_ds_802_11_enable_rsn cmd;
976 lbs_deb_enter_args(LBS_DEB_CFG80211, "%d", enable);
983 * action 01 00 ACT_SET
986 memset(&cmd, 0, sizeof(cmd));
987 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
988 cmd.action = cpu_to_le16(CMD_ACT_SET);
989 cmd.enable = cpu_to_le16(enable);
991 ret = lbs_cmd_with_response(priv, CMD_802_11_ENABLE_RSN, &cmd);
993 lbs_deb_leave(LBS_DEB_CFG80211);
999 * Set WPA/WPA key material
1003 * like "struct cmd_ds_802_11_key_material", but with cmd_header. Once we
1004 * get rid of WEXT, this should go into host.h
1007 struct cmd_key_material {
1008 struct cmd_header hdr;
1011 struct MrvlIEtype_keyParamSet param;
1014 static int lbs_set_key_material(struct lbs_private *priv,
1015 int key_type, int key_info,
1016 const u8 *key, u16 key_len)
1018 struct cmd_key_material cmd;
1021 lbs_deb_enter(LBS_DEB_CFG80211);
1024 * Example for WPA (TKIP):
1031 * TLV type 00 01 key param
1033 * key type 01 00 TKIP
1034 * key info 06 00 UNICAST | ENABLED
1038 memset(&cmd, 0, sizeof(cmd));
1039 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1040 cmd.action = cpu_to_le16(CMD_ACT_SET);
1041 cmd.param.type = cpu_to_le16(TLV_TYPE_KEY_MATERIAL);
1042 cmd.param.length = cpu_to_le16(sizeof(cmd.param) - 4);
1043 cmd.param.keytypeid = cpu_to_le16(key_type);
1044 cmd.param.keyinfo = cpu_to_le16(key_info);
1045 cmd.param.keylen = cpu_to_le16(key_len);
1047 memcpy(cmd.param.key, key, key_len);
1049 ret = lbs_cmd_with_response(priv, CMD_802_11_KEY_MATERIAL, &cmd);
1051 lbs_deb_leave(LBS_DEB_CFG80211);
1057 * Sets the auth type (open, shared, etc) in the firmware. That
1058 * we use CMD_802_11_AUTHENTICATE is misleading, this firmware
1059 * command doesn't send an authentication frame at all, it just
1060 * stores the auth_type.
1062 static int lbs_set_authtype(struct lbs_private *priv,
1063 struct cfg80211_connect_params *sme)
1065 struct cmd_ds_802_11_authenticate cmd;
1068 lbs_deb_enter_args(LBS_DEB_CFG80211, "%d", sme->auth_type);
1075 * BSS id 00 13 19 80 da 30
1077 * reserved 00 00 00 00 00 00 00 00 00 00
1079 memset(&cmd, 0, sizeof(cmd));
1080 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1082 memcpy(cmd.bssid, sme->bssid, ETH_ALEN);
1083 /* convert auth_type */
1084 ret = lbs_auth_to_authtype(sme->auth_type);
1089 ret = lbs_cmd_with_response(priv, CMD_802_11_AUTHENTICATE, &cmd);
1092 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1098 * Create association request
1100 #define LBS_ASSOC_MAX_CMD_SIZE \
1101 (sizeof(struct cmd_ds_802_11_associate) \
1102 - 512 /* cmd_ds_802_11_associate.iebuf */ \
1103 + LBS_MAX_SSID_TLV_SIZE \
1104 + LBS_MAX_CHANNEL_TLV_SIZE \
1105 + LBS_MAX_CF_PARAM_TLV_SIZE \
1106 + LBS_MAX_AUTH_TYPE_TLV_SIZE \
1107 + LBS_MAX_WPA_TLV_SIZE)
1109 static int lbs_associate(struct lbs_private *priv,
1110 struct cfg80211_bss *bss,
1111 struct cfg80211_connect_params *sme)
1113 struct cmd_ds_802_11_associate_response *resp;
1114 struct cmd_ds_802_11_associate *cmd = kzalloc(LBS_ASSOC_MAX_CMD_SIZE,
1117 size_t len, resp_ie_len;
1123 lbs_deb_enter(LBS_DEB_CFG80211);
1129 pos = &cmd->iebuf[0];
1136 * BSS id 00 13 19 80 da 30
1137 * capabilities 11 00
1138 * listen interval 0a 00
1139 * beacon interval 00 00
1141 * TLVs xx (up to 512 bytes)
1143 cmd->hdr.command = cpu_to_le16(CMD_802_11_ASSOCIATE);
1145 /* Fill in static fields */
1146 memcpy(cmd->bssid, bss->bssid, ETH_ALEN);
1147 cmd->listeninterval = cpu_to_le16(MRVDRV_DEFAULT_LISTEN_INTERVAL);
1148 cmd->capability = cpu_to_le16(bss->capability);
1152 ssid_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SSID);
1154 pos += lbs_add_ssid_tlv(pos, ssid_eid + 2, ssid_eid[1]);
1156 lbs_deb_assoc("no SSID\n");
1159 /* add DS param TLV */
1161 pos += lbs_add_channel_tlv(pos, bss->channel->hw_value);
1163 lbs_deb_assoc("no channel\n");
1165 /* add (empty) CF param TLV */
1166 pos += lbs_add_cf_param_tlv(pos);
1169 tmp = pos + 4; /* skip Marvell IE header */
1170 pos += lbs_add_common_rates_tlv(pos, bss);
1171 lbs_deb_hex(LBS_DEB_ASSOC, "Common Rates", tmp, pos - tmp);
1173 /* add auth type TLV */
1174 if (MRVL_FW_MAJOR_REV(priv->fwrelease) >= 9)
1175 pos += lbs_add_auth_type_tlv(pos, sme->auth_type);
1177 /* add WPA/WPA2 TLV */
1178 if (sme->ie && sme->ie_len)
1179 pos += lbs_add_wpa_tlv(pos, sme->ie, sme->ie_len);
1181 len = (sizeof(*cmd) - sizeof(cmd->iebuf)) +
1182 (u16)(pos - (u8 *) &cmd->iebuf);
1183 cmd->hdr.size = cpu_to_le16(len);
1185 lbs_deb_hex(LBS_DEB_ASSOC, "ASSOC_CMD", (u8 *) cmd,
1186 le16_to_cpu(cmd->hdr.size));
1188 /* store for later use */
1189 memcpy(priv->assoc_bss, bss->bssid, ETH_ALEN);
1191 ret = lbs_cmd_with_response(priv, CMD_802_11_ASSOCIATE, cmd);
1195 /* generate connect message to cfg80211 */
1197 resp = (void *) cmd; /* recast for easier field access */
1198 status = le16_to_cpu(resp->statuscode);
1200 /* Older FW versions map the IEEE 802.11 Status Code in the association
1201 * response to the following values returned in resp->statuscode:
1203 * IEEE Status Code Marvell Status Code
1204 * 0 -> 0x0000 ASSOC_RESULT_SUCCESS
1205 * 13 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED
1206 * 14 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED
1207 * 15 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED
1208 * 16 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED
1209 * others -> 0x0003 ASSOC_RESULT_REFUSED
1211 * Other response codes:
1212 * 0x0001 -> ASSOC_RESULT_INVALID_PARAMETERS (unused)
1213 * 0x0002 -> ASSOC_RESULT_TIMEOUT (internal timer expired waiting for
1214 * association response from the AP)
1216 if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8) {
1221 lbs_deb_assoc("invalid association parameters\n");
1222 status = WLAN_STATUS_CAPS_UNSUPPORTED;
1225 lbs_deb_assoc("timer expired while waiting for AP\n");
1226 status = WLAN_STATUS_AUTH_TIMEOUT;
1229 lbs_deb_assoc("association refused by AP\n");
1230 status = WLAN_STATUS_ASSOC_DENIED_UNSPEC;
1233 lbs_deb_assoc("authentication refused by AP\n");
1234 status = WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION;
1237 lbs_deb_assoc("association failure %d\n", status);
1238 /* v5 OLPC firmware does return the AP status code if
1239 * it's not one of the values above. Let that through.
1245 lbs_deb_assoc("status %d, statuscode 0x%04x, capability 0x%04x, "
1246 "aid 0x%04x\n", status, le16_to_cpu(resp->statuscode),
1247 le16_to_cpu(resp->capability), le16_to_cpu(resp->aid));
1249 resp_ie_len = le16_to_cpu(resp->hdr.size)
1252 cfg80211_connect_result(priv->dev,
1254 sme->ie, sme->ie_len,
1255 resp->iebuf, resp_ie_len,
1260 /* TODO: get rid of priv->connect_status */
1261 priv->connect_status = LBS_CONNECTED;
1262 netif_carrier_on(priv->dev);
1263 if (!priv->tx_pending_len)
1264 netif_tx_wake_all_queues(priv->dev);
1269 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1273 static struct cfg80211_scan_request *
1274 _new_connect_scan_req(struct wiphy *wiphy, struct cfg80211_connect_params *sme)
1276 struct cfg80211_scan_request *creq = NULL;
1277 int i, n_channels = ieee80211_get_num_supported_channels(wiphy);
1278 enum nl80211_band band;
1280 creq = kzalloc(sizeof(*creq) + sizeof(struct cfg80211_ssid) +
1281 n_channels * sizeof(void *),
1286 /* SSIDs come after channels */
1287 creq->ssids = (void *)&creq->channels[n_channels];
1288 creq->n_channels = n_channels;
1291 /* Scan all available channels */
1293 for (band = 0; band < NUM_NL80211_BANDS; band++) {
1296 if (!wiphy->bands[band])
1299 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
1300 /* ignore disabled channels */
1301 if (wiphy->bands[band]->channels[j].flags &
1302 IEEE80211_CHAN_DISABLED)
1305 creq->channels[i] = &wiphy->bands[band]->channels[j];
1310 /* Set real number of channels specified in creq->channels[] */
1311 creq->n_channels = i;
1313 /* Scan for the SSID we're going to connect to */
1314 memcpy(creq->ssids[0].ssid, sme->ssid, sme->ssid_len);
1315 creq->ssids[0].ssid_len = sme->ssid_len;
1317 /* No channels found... */
1325 static int lbs_cfg_connect(struct wiphy *wiphy, struct net_device *dev,
1326 struct cfg80211_connect_params *sme)
1328 struct lbs_private *priv = wiphy_priv(wiphy);
1329 struct cfg80211_bss *bss = NULL;
1331 u8 preamble = RADIO_PREAMBLE_SHORT;
1333 if (dev == priv->mesh_dev)
1336 lbs_deb_enter(LBS_DEB_CFG80211);
1339 struct cfg80211_scan_request *creq;
1342 * Scan for the requested network after waiting for existing
1345 lbs_deb_assoc("assoc: waiting for existing scans\n");
1346 wait_event_interruptible_timeout(priv->scan_q,
1347 (priv->scan_req == NULL),
1350 creq = _new_connect_scan_req(wiphy, sme);
1356 lbs_deb_assoc("assoc: scanning for compatible AP\n");
1357 _internal_start_scan(priv, true, creq);
1359 lbs_deb_assoc("assoc: waiting for scan to complete\n");
1360 wait_event_interruptible_timeout(priv->scan_q,
1361 (priv->scan_req == NULL),
1363 lbs_deb_assoc("assoc: scanning completed\n");
1366 /* Find the BSS we want using available scan results */
1367 bss = cfg80211_get_bss(wiphy, sme->channel, sme->bssid,
1368 sme->ssid, sme->ssid_len, IEEE80211_BSS_TYPE_ESS,
1369 IEEE80211_PRIVACY_ANY);
1371 wiphy_err(wiphy, "assoc: bss %pM not in scan results\n",
1376 lbs_deb_assoc("trying %pM\n", bss->bssid);
1377 lbs_deb_assoc("cipher 0x%x, key index %d, key len %d\n",
1378 sme->crypto.cipher_group,
1379 sme->key_idx, sme->key_len);
1381 /* As this is a new connection, clear locally stored WEP keys */
1382 priv->wep_tx_key = 0;
1383 memset(priv->wep_key, 0, sizeof(priv->wep_key));
1384 memset(priv->wep_key_len, 0, sizeof(priv->wep_key_len));
1386 /* set/remove WEP keys */
1387 switch (sme->crypto.cipher_group) {
1388 case WLAN_CIPHER_SUITE_WEP40:
1389 case WLAN_CIPHER_SUITE_WEP104:
1390 /* Store provided WEP keys in priv-> */
1391 priv->wep_tx_key = sme->key_idx;
1392 priv->wep_key_len[sme->key_idx] = sme->key_len;
1393 memcpy(priv->wep_key[sme->key_idx], sme->key, sme->key_len);
1394 /* Set WEP keys and WEP mode */
1395 lbs_set_wep_keys(priv);
1396 priv->mac_control |= CMD_ACT_MAC_WEP_ENABLE;
1397 lbs_set_mac_control(priv);
1398 /* No RSN mode for WEP */
1399 lbs_enable_rsn(priv, 0);
1401 case 0: /* there's no WLAN_CIPHER_SUITE_NONE definition */
1403 * If we don't have no WEP, no WPA and no WPA2,
1404 * we remove all keys like in the WPA/WPA2 setup,
1405 * we just don't set RSN.
1407 * Therefore: fall-through
1409 case WLAN_CIPHER_SUITE_TKIP:
1410 case WLAN_CIPHER_SUITE_CCMP:
1411 /* Remove WEP keys and WEP mode */
1412 lbs_remove_wep_keys(priv);
1413 priv->mac_control &= ~CMD_ACT_MAC_WEP_ENABLE;
1414 lbs_set_mac_control(priv);
1416 /* clear the WPA/WPA2 keys */
1417 lbs_set_key_material(priv,
1418 KEY_TYPE_ID_WEP, /* doesn't matter */
1419 KEY_INFO_WPA_UNICAST,
1421 lbs_set_key_material(priv,
1422 KEY_TYPE_ID_WEP, /* doesn't matter */
1425 /* RSN mode for WPA/WPA2 */
1426 lbs_enable_rsn(priv, sme->crypto.cipher_group != 0);
1429 wiphy_err(wiphy, "unsupported cipher group 0x%x\n",
1430 sme->crypto.cipher_group);
1435 ret = lbs_set_authtype(priv, sme);
1436 if (ret == -ENOTSUPP) {
1437 wiphy_err(wiphy, "unsupported authtype 0x%x\n", sme->auth_type);
1441 lbs_set_radio(priv, preamble, 1);
1443 /* Do the actual association */
1444 ret = lbs_associate(priv, bss, sme);
1448 cfg80211_put_bss(wiphy, bss);
1449 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1453 int lbs_disconnect(struct lbs_private *priv, u16 reason)
1455 struct cmd_ds_802_11_deauthenticate cmd;
1458 memset(&cmd, 0, sizeof(cmd));
1459 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1460 /* Mildly ugly to use a locally store my own BSSID ... */
1461 memcpy(cmd.macaddr, &priv->assoc_bss, ETH_ALEN);
1462 cmd.reasoncode = cpu_to_le16(reason);
1464 ret = lbs_cmd_with_response(priv, CMD_802_11_DEAUTHENTICATE, &cmd);
1468 cfg80211_disconnected(priv->dev,
1472 priv->connect_status = LBS_DISCONNECTED;
1477 static int lbs_cfg_disconnect(struct wiphy *wiphy, struct net_device *dev,
1480 struct lbs_private *priv = wiphy_priv(wiphy);
1482 if (dev == priv->mesh_dev)
1485 lbs_deb_enter_args(LBS_DEB_CFG80211, "reason_code %d", reason_code);
1487 /* store for lbs_cfg_ret_disconnect() */
1488 priv->disassoc_reason = reason_code;
1490 return lbs_disconnect(priv, reason_code);
1493 static int lbs_cfg_set_default_key(struct wiphy *wiphy,
1494 struct net_device *netdev,
1495 u8 key_index, bool unicast,
1498 struct lbs_private *priv = wiphy_priv(wiphy);
1500 if (netdev == priv->mesh_dev)
1503 lbs_deb_enter(LBS_DEB_CFG80211);
1505 if (key_index != priv->wep_tx_key) {
1506 lbs_deb_assoc("set_default_key: to %d\n", key_index);
1507 priv->wep_tx_key = key_index;
1508 lbs_set_wep_keys(priv);
1515 static int lbs_cfg_add_key(struct wiphy *wiphy, struct net_device *netdev,
1516 u8 idx, bool pairwise, const u8 *mac_addr,
1517 struct key_params *params)
1519 struct lbs_private *priv = wiphy_priv(wiphy);
1524 if (netdev == priv->mesh_dev)
1527 lbs_deb_enter(LBS_DEB_CFG80211);
1529 lbs_deb_assoc("add_key: cipher 0x%x, mac_addr %pM\n",
1530 params->cipher, mac_addr);
1531 lbs_deb_assoc("add_key: key index %d, key len %d\n",
1532 idx, params->key_len);
1533 if (params->key_len)
1534 lbs_deb_hex(LBS_DEB_CFG80211, "KEY",
1535 params->key, params->key_len);
1537 lbs_deb_assoc("add_key: seq len %d\n", params->seq_len);
1538 if (params->seq_len)
1539 lbs_deb_hex(LBS_DEB_CFG80211, "SEQ",
1540 params->seq, params->seq_len);
1542 switch (params->cipher) {
1543 case WLAN_CIPHER_SUITE_WEP40:
1544 case WLAN_CIPHER_SUITE_WEP104:
1545 /* actually compare if something has changed ... */
1546 if ((priv->wep_key_len[idx] != params->key_len) ||
1547 memcmp(priv->wep_key[idx],
1548 params->key, params->key_len) != 0) {
1549 priv->wep_key_len[idx] = params->key_len;
1550 memcpy(priv->wep_key[idx],
1551 params->key, params->key_len);
1552 lbs_set_wep_keys(priv);
1555 case WLAN_CIPHER_SUITE_TKIP:
1556 case WLAN_CIPHER_SUITE_CCMP:
1557 key_info = KEY_INFO_WPA_ENABLED | ((idx == 0)
1558 ? KEY_INFO_WPA_UNICAST
1559 : KEY_INFO_WPA_MCAST);
1560 key_type = (params->cipher == WLAN_CIPHER_SUITE_TKIP)
1563 lbs_set_key_material(priv,
1566 params->key, params->key_len);
1569 wiphy_err(wiphy, "unhandled cipher 0x%x\n", params->cipher);
1578 static int lbs_cfg_del_key(struct wiphy *wiphy, struct net_device *netdev,
1579 u8 key_index, bool pairwise, const u8 *mac_addr)
1582 lbs_deb_enter(LBS_DEB_CFG80211);
1584 lbs_deb_assoc("del_key: key_idx %d, mac_addr %pM\n",
1585 key_index, mac_addr);
1588 struct lbs_private *priv = wiphy_priv(wiphy);
1590 * I think can keep this a NO-OP, because:
1592 * - we clear all keys whenever we do lbs_cfg_connect() anyway
1593 * - neither "iw" nor "wpa_supplicant" won't call this during
1594 * an ongoing connection
1595 * - TODO: but I have to check if this is still true when
1596 * I set the AP to periodic re-keying
1597 * - we've not kzallec() something when we've added a key at
1598 * lbs_cfg_connect() or lbs_cfg_add_key().
1600 * This causes lbs_cfg_del_key() only called at disconnect time,
1601 * where we'd just waste time deleting a key that is not going
1602 * to be used anyway.
1604 if (key_index < 3 && priv->wep_key_len[key_index]) {
1605 priv->wep_key_len[key_index] = 0;
1606 lbs_set_wep_keys(priv);
1618 static int lbs_cfg_get_station(struct wiphy *wiphy, struct net_device *dev,
1619 const u8 *mac, struct station_info *sinfo)
1621 struct lbs_private *priv = wiphy_priv(wiphy);
1626 lbs_deb_enter(LBS_DEB_CFG80211);
1628 sinfo->filled |= BIT(NL80211_STA_INFO_TX_BYTES) |
1629 BIT(NL80211_STA_INFO_TX_PACKETS) |
1630 BIT(NL80211_STA_INFO_RX_BYTES) |
1631 BIT(NL80211_STA_INFO_RX_PACKETS);
1632 sinfo->tx_bytes = priv->dev->stats.tx_bytes;
1633 sinfo->tx_packets = priv->dev->stats.tx_packets;
1634 sinfo->rx_bytes = priv->dev->stats.rx_bytes;
1635 sinfo->rx_packets = priv->dev->stats.rx_packets;
1637 /* Get current RSSI */
1638 ret = lbs_get_rssi(priv, &signal, &noise);
1640 sinfo->signal = signal;
1641 sinfo->filled |= BIT(NL80211_STA_INFO_SIGNAL);
1644 /* Convert priv->cur_rate from hw_value to NL80211 value */
1645 for (i = 0; i < ARRAY_SIZE(lbs_rates); i++) {
1646 if (priv->cur_rate == lbs_rates[i].hw_value) {
1647 sinfo->txrate.legacy = lbs_rates[i].bitrate;
1648 sinfo->filled |= BIT(NL80211_STA_INFO_TX_BITRATE);
1663 static int lbs_change_intf(struct wiphy *wiphy, struct net_device *dev,
1664 enum nl80211_iftype type, u32 *flags,
1665 struct vif_params *params)
1667 struct lbs_private *priv = wiphy_priv(wiphy);
1670 if (dev == priv->mesh_dev)
1674 case NL80211_IFTYPE_MONITOR:
1675 case NL80211_IFTYPE_STATION:
1676 case NL80211_IFTYPE_ADHOC:
1682 lbs_deb_enter(LBS_DEB_CFG80211);
1684 if (priv->iface_running)
1685 ret = lbs_set_iface_type(priv, type);
1688 priv->wdev->iftype = type;
1690 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1701 * The firmware needs the following bits masked out of the beacon-derived
1702 * capability field when associating/joining to a BSS:
1703 * 9 (QoS), 11 (APSD), 12 (unused), 14 (unused), 15 (unused)
1705 #define CAPINFO_MASK (~(0xda00))
1708 static void lbs_join_post(struct lbs_private *priv,
1709 struct cfg80211_ibss_params *params,
1710 u8 *bssid, u16 capability)
1712 u8 fake_ie[2 + IEEE80211_MAX_SSID_LEN + /* ssid */
1713 2 + 4 + /* basic rates */
1714 2 + 1 + /* DS parameter */
1716 2 + 8]; /* extended rates */
1718 struct cfg80211_bss *bss;
1720 lbs_deb_enter(LBS_DEB_CFG80211);
1723 * For cfg80211_inform_bss, we'll need a fake IE, as we can't get
1724 * the real IE from the firmware. So we fabricate a fake IE based on
1725 * what the firmware actually sends (sniffed with wireshark).
1728 *fake++ = WLAN_EID_SSID;
1729 *fake++ = params->ssid_len;
1730 memcpy(fake, params->ssid, params->ssid_len);
1731 fake += params->ssid_len;
1732 /* Fake supported basic rates IE */
1733 *fake++ = WLAN_EID_SUPP_RATES;
1739 /* Fake DS channel IE */
1740 *fake++ = WLAN_EID_DS_PARAMS;
1742 *fake++ = params->chandef.chan->hw_value;
1743 /* Fake IBSS params IE */
1744 *fake++ = WLAN_EID_IBSS_PARAMS;
1746 *fake++ = 0; /* ATIM=0 */
1748 /* Fake extended rates IE, TODO: don't add this for 802.11b only,
1749 * but I don't know how this could be checked */
1750 *fake++ = WLAN_EID_EXT_SUPP_RATES;
1760 lbs_deb_hex(LBS_DEB_CFG80211, "IE", fake_ie, fake - fake_ie);
1762 bss = cfg80211_inform_bss(priv->wdev->wiphy,
1763 params->chandef.chan,
1764 CFG80211_BSS_FTYPE_UNKNOWN,
1768 params->beacon_interval,
1769 fake_ie, fake - fake_ie,
1771 cfg80211_put_bss(priv->wdev->wiphy, bss);
1773 memcpy(priv->wdev->ssid, params->ssid, params->ssid_len);
1774 priv->wdev->ssid_len = params->ssid_len;
1776 cfg80211_ibss_joined(priv->dev, bssid, params->chandef.chan,
1779 /* TODO: consider doing this at MACREG_INT_CODE_LINK_SENSED time */
1780 priv->connect_status = LBS_CONNECTED;
1781 netif_carrier_on(priv->dev);
1782 if (!priv->tx_pending_len)
1783 netif_wake_queue(priv->dev);
1785 lbs_deb_leave(LBS_DEB_CFG80211);
1788 static int lbs_ibss_join_existing(struct lbs_private *priv,
1789 struct cfg80211_ibss_params *params,
1790 struct cfg80211_bss *bss)
1792 const u8 *rates_eid;
1793 struct cmd_ds_802_11_ad_hoc_join cmd;
1794 u8 preamble = RADIO_PREAMBLE_SHORT;
1800 lbs_deb_enter(LBS_DEB_CFG80211);
1802 /* TODO: set preamble based on scan result */
1803 ret = lbs_set_radio(priv, preamble, 1);
1808 * Example CMD_802_11_AD_HOC_JOIN command:
1810 * command 2c 00 CMD_802_11_AD_HOC_JOIN
1814 * bssid 02 27 27 97 2f 96
1815 * ssid 49 42 53 53 00 00 00 00
1816 * 00 00 00 00 00 00 00 00
1817 * 00 00 00 00 00 00 00 00
1818 * 00 00 00 00 00 00 00 00
1819 * type 02 CMD_BSS_TYPE_IBSS
1820 * beacon period 64 00
1822 * timestamp 00 00 00 00 00 00 00 00
1823 * localtime 00 00 00 00 00 00 00 00
1827 * reserveed 00 00 00 00
1830 * IE IBSS atim 00 00
1831 * reserved 00 00 00 00
1833 * rates 82 84 8b 96 0c 12 18 24 30 48 60 6c 00
1834 * fail timeout ff 00
1837 memset(&cmd, 0, sizeof(cmd));
1838 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1840 memcpy(cmd.bss.bssid, bss->bssid, ETH_ALEN);
1841 memcpy(cmd.bss.ssid, params->ssid, params->ssid_len);
1842 cmd.bss.type = CMD_BSS_TYPE_IBSS;
1843 cmd.bss.beaconperiod = cpu_to_le16(params->beacon_interval);
1844 cmd.bss.ds.header.id = WLAN_EID_DS_PARAMS;
1845 cmd.bss.ds.header.len = 1;
1846 cmd.bss.ds.channel = params->chandef.chan->hw_value;
1847 cmd.bss.ibss.header.id = WLAN_EID_IBSS_PARAMS;
1848 cmd.bss.ibss.header.len = 2;
1849 cmd.bss.ibss.atimwindow = 0;
1850 cmd.bss.capability = cpu_to_le16(bss->capability & CAPINFO_MASK);
1852 /* set rates to the intersection of our rates and the rates in the
1855 rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SUPP_RATES);
1857 lbs_add_rates(cmd.bss.rates);
1859 rates_max = rates_eid[1];
1860 if (rates_max > MAX_RATES) {
1861 lbs_deb_join("invalid rates");
1866 rates = cmd.bss.rates;
1867 for (hw = 0; hw < ARRAY_SIZE(lbs_rates); hw++) {
1868 u8 hw_rate = lbs_rates[hw].bitrate / 5;
1869 for (i = 0; i < rates_max; i++) {
1870 if (hw_rate == (rates_eid[i+2] & 0x7f)) {
1871 u8 rate = rates_eid[i+2];
1872 if (rate == 0x02 || rate == 0x04 ||
1873 rate == 0x0b || rate == 0x16)
1882 /* Only v8 and below support setting this */
1883 if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8) {
1884 cmd.failtimeout = cpu_to_le16(MRVDRV_ASSOCIATION_TIME_OUT);
1885 cmd.probedelay = cpu_to_le16(CMD_SCAN_PROBE_DELAY_TIME);
1887 ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_JOIN, &cmd);
1892 * This is a sample response to CMD_802_11_AD_HOC_JOIN:
1900 lbs_join_post(priv, params, bss->bssid, bss->capability);
1903 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1909 static int lbs_ibss_start_new(struct lbs_private *priv,
1910 struct cfg80211_ibss_params *params)
1912 struct cmd_ds_802_11_ad_hoc_start cmd;
1913 struct cmd_ds_802_11_ad_hoc_result *resp =
1914 (struct cmd_ds_802_11_ad_hoc_result *) &cmd;
1915 u8 preamble = RADIO_PREAMBLE_SHORT;
1919 lbs_deb_enter(LBS_DEB_CFG80211);
1921 ret = lbs_set_radio(priv, preamble, 1);
1926 * Example CMD_802_11_AD_HOC_START command:
1928 * command 2b 00 CMD_802_11_AD_HOC_START
1932 * ssid 54 45 53 54 00 00 00 00
1933 * 00 00 00 00 00 00 00 00
1934 * 00 00 00 00 00 00 00 00
1935 * 00 00 00 00 00 00 00 00
1937 * beacon period 64 00
1941 * IE IBSS atim 00 00
1942 * reserved 00 00 00 00
1946 * reserved 00 00 00 00
1949 * rates 82 84 8b 96 (basic rates with have bit 7 set)
1950 * 0c 12 18 24 30 48 60 6c
1953 memset(&cmd, 0, sizeof(cmd));
1954 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1955 memcpy(cmd.ssid, params->ssid, params->ssid_len);
1956 cmd.bsstype = CMD_BSS_TYPE_IBSS;
1957 cmd.beaconperiod = cpu_to_le16(params->beacon_interval);
1958 cmd.ibss.header.id = WLAN_EID_IBSS_PARAMS;
1959 cmd.ibss.header.len = 2;
1960 cmd.ibss.atimwindow = 0;
1961 cmd.ds.header.id = WLAN_EID_DS_PARAMS;
1962 cmd.ds.header.len = 1;
1963 cmd.ds.channel = params->chandef.chan->hw_value;
1964 /* Only v8 and below support setting probe delay */
1965 if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8)
1966 cmd.probedelay = cpu_to_le16(CMD_SCAN_PROBE_DELAY_TIME);
1967 /* TODO: mix in WLAN_CAPABILITY_PRIVACY */
1968 capability = WLAN_CAPABILITY_IBSS;
1969 cmd.capability = cpu_to_le16(capability);
1970 lbs_add_rates(cmd.rates);
1973 ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_START, &cmd);
1978 * This is a sample response to CMD_802_11_AD_HOC_JOIN:
1985 * bssid 02 2b 7b 0f 86 0e
1987 lbs_join_post(priv, params, resp->bssid, capability);
1990 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1995 static int lbs_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1996 struct cfg80211_ibss_params *params)
1998 struct lbs_private *priv = wiphy_priv(wiphy);
2000 struct cfg80211_bss *bss;
2002 if (dev == priv->mesh_dev)
2005 lbs_deb_enter(LBS_DEB_CFG80211);
2007 if (!params->chandef.chan) {
2012 ret = lbs_set_channel(priv, params->chandef.chan->hw_value);
2016 /* Search if someone is beaconing. This assumes that the
2017 * bss list is populated already */
2018 bss = cfg80211_get_bss(wiphy, params->chandef.chan, params->bssid,
2019 params->ssid, params->ssid_len,
2020 IEEE80211_BSS_TYPE_IBSS, IEEE80211_PRIVACY_ANY);
2023 ret = lbs_ibss_join_existing(priv, params, bss);
2024 cfg80211_put_bss(wiphy, bss);
2026 ret = lbs_ibss_start_new(priv, params);
2030 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
2035 static int lbs_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2037 struct lbs_private *priv = wiphy_priv(wiphy);
2038 struct cmd_ds_802_11_ad_hoc_stop cmd;
2041 if (dev == priv->mesh_dev)
2044 lbs_deb_enter(LBS_DEB_CFG80211);
2046 memset(&cmd, 0, sizeof(cmd));
2047 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
2048 ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_STOP, &cmd);
2050 /* TODO: consider doing this at MACREG_INT_CODE_ADHOC_BCN_LOST time */
2051 lbs_mac_event_disconnected(priv, true);
2053 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
2059 static int lbs_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2060 bool enabled, int timeout)
2062 struct lbs_private *priv = wiphy_priv(wiphy);
2064 if (!(priv->fwcapinfo & FW_CAPINFO_PS)) {
2070 /* firmware does not work well with too long latency with power saving
2071 * enabled, so do not enable it if there is only polling, no
2072 * interrupts (like in some sdio hosts which can only
2073 * poll for sdio irqs)
2075 if (priv->is_polling) {
2082 priv->psmode = LBS802_11POWERMODECAM;
2083 if (priv->psstate != PS_STATE_FULL_POWER)
2084 lbs_set_ps_mode(priv,
2085 PS_MODE_ACTION_EXIT_PS,
2089 if (priv->psmode != LBS802_11POWERMODECAM)
2091 priv->psmode = LBS802_11POWERMODEMAX_PSP;
2092 if (priv->connect_status == LBS_CONNECTED)
2093 lbs_set_ps_mode(priv, PS_MODE_ACTION_ENTER_PS, true);
2101 static struct cfg80211_ops lbs_cfg80211_ops = {
2102 .set_monitor_channel = lbs_cfg_set_monitor_channel,
2103 .libertas_set_mesh_channel = lbs_cfg_set_mesh_channel,
2104 .scan = lbs_cfg_scan,
2105 .connect = lbs_cfg_connect,
2106 .disconnect = lbs_cfg_disconnect,
2107 .add_key = lbs_cfg_add_key,
2108 .del_key = lbs_cfg_del_key,
2109 .set_default_key = lbs_cfg_set_default_key,
2110 .get_station = lbs_cfg_get_station,
2111 .change_virtual_intf = lbs_change_intf,
2112 .join_ibss = lbs_join_ibss,
2113 .leave_ibss = lbs_leave_ibss,
2114 .set_power_mgmt = lbs_set_power_mgmt,
2119 * At this time lbs_private *priv doesn't even exist, so we just allocate
2120 * memory and don't initialize the wiphy further. This is postponed until we
2121 * can talk to the firmware and happens at registration time in
2122 * lbs_cfg_wiphy_register().
2124 struct wireless_dev *lbs_cfg_alloc(struct device *dev)
2127 struct wireless_dev *wdev;
2129 lbs_deb_enter(LBS_DEB_CFG80211);
2131 wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL);
2133 return ERR_PTR(-ENOMEM);
2135 wdev->wiphy = wiphy_new(&lbs_cfg80211_ops, sizeof(struct lbs_private));
2137 dev_err(dev, "cannot allocate wiphy\n");
2142 lbs_deb_leave(LBS_DEB_CFG80211);
2147 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
2148 return ERR_PTR(ret);
2152 static void lbs_cfg_set_regulatory_hint(struct lbs_private *priv)
2154 struct region_code_mapping {
2159 /* Section 5.17.2 */
2160 static const struct region_code_mapping regmap[] = {
2161 {"US ", 0x10}, /* US FCC */
2162 {"CA ", 0x20}, /* Canada */
2163 {"EU ", 0x30}, /* ETSI */
2164 {"ES ", 0x31}, /* Spain */
2165 {"FR ", 0x32}, /* France */
2166 {"JP ", 0x40}, /* Japan */
2170 lbs_deb_enter(LBS_DEB_CFG80211);
2172 for (i = 0; i < ARRAY_SIZE(regmap); i++)
2173 if (regmap[i].code == priv->regioncode) {
2174 regulatory_hint(priv->wdev->wiphy, regmap[i].cn);
2178 lbs_deb_leave(LBS_DEB_CFG80211);
2181 static void lbs_reg_notifier(struct wiphy *wiphy,
2182 struct regulatory_request *request)
2184 struct lbs_private *priv = wiphy_priv(wiphy);
2186 lbs_deb_enter_args(LBS_DEB_CFG80211, "cfg80211 regulatory domain "
2187 "callback for domain %c%c\n", request->alpha2[0],
2188 request->alpha2[1]);
2190 memcpy(priv->country_code, request->alpha2, sizeof(request->alpha2));
2191 if (lbs_iface_active(priv))
2192 lbs_set_11d_domain_info(priv);
2194 lbs_deb_leave(LBS_DEB_CFG80211);
2198 * This function get's called after lbs_setup_firmware() determined the
2199 * firmware capabities. So we can setup the wiphy according to our
2200 * hardware/firmware.
2202 int lbs_cfg_register(struct lbs_private *priv)
2204 struct wireless_dev *wdev = priv->wdev;
2207 lbs_deb_enter(LBS_DEB_CFG80211);
2209 wdev->wiphy->max_scan_ssids = 1;
2210 wdev->wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
2212 wdev->wiphy->interface_modes =
2213 BIT(NL80211_IFTYPE_STATION) |
2214 BIT(NL80211_IFTYPE_ADHOC);
2215 if (lbs_rtap_supported(priv))
2216 wdev->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR);
2217 if (lbs_mesh_activated(priv))
2218 wdev->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MESH_POINT);
2220 wdev->wiphy->bands[NL80211_BAND_2GHZ] = &lbs_band_2ghz;
2223 * We could check priv->fwcapinfo && FW_CAPINFO_WPA, but I have
2224 * never seen a firmware without WPA
2226 wdev->wiphy->cipher_suites = cipher_suites;
2227 wdev->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
2228 wdev->wiphy->reg_notifier = lbs_reg_notifier;
2230 ret = wiphy_register(wdev->wiphy);
2232 pr_err("cannot register wiphy device\n");
2234 priv->wiphy_registered = true;
2236 ret = register_netdev(priv->dev);
2238 pr_err("cannot register network device\n");
2240 INIT_DELAYED_WORK(&priv->scan_work, lbs_scan_worker);
2242 lbs_cfg_set_regulatory_hint(priv);
2244 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
2248 void lbs_scan_deinit(struct lbs_private *priv)
2250 lbs_deb_enter(LBS_DEB_CFG80211);
2251 cancel_delayed_work_sync(&priv->scan_work);
2255 void lbs_cfg_free(struct lbs_private *priv)
2257 struct wireless_dev *wdev = priv->wdev;
2259 lbs_deb_enter(LBS_DEB_CFG80211);
2264 if (priv->wiphy_registered)
2265 wiphy_unregister(wdev->wiphy);
2268 wiphy_free(wdev->wiphy);