1 // SPDX-License-Identifier: GPL-2.0
2 /* cfg80211 Interface for prism2_usb module */
4 #include "prism2mgmt.h"
6 /* Prism2 channel/frequency/bitrate declarations */
7 static const struct ieee80211_channel prism2_channels[] = {
8 { .center_freq = 2412 },
9 { .center_freq = 2417 },
10 { .center_freq = 2422 },
11 { .center_freq = 2427 },
12 { .center_freq = 2432 },
13 { .center_freq = 2437 },
14 { .center_freq = 2442 },
15 { .center_freq = 2447 },
16 { .center_freq = 2452 },
17 { .center_freq = 2457 },
18 { .center_freq = 2462 },
19 { .center_freq = 2467 },
20 { .center_freq = 2472 },
21 { .center_freq = 2484 },
24 static const struct ieee80211_rate prism2_rates[] = {
31 #define PRISM2_NUM_CIPHER_SUITES 2
32 static const u32 prism2_cipher_suites[PRISM2_NUM_CIPHER_SUITES] = {
33 WLAN_CIPHER_SUITE_WEP40,
34 WLAN_CIPHER_SUITE_WEP104
37 /* prism2 device private data */
38 struct prism2_wiphy_private {
39 struct wlandevice *wlandev;
41 struct ieee80211_supported_band band;
42 struct ieee80211_channel channels[ARRAY_SIZE(prism2_channels)];
43 struct ieee80211_rate rates[ARRAY_SIZE(prism2_rates)];
45 struct cfg80211_scan_request *scan_request;
48 static const void * const prism2_wiphy_privid = &prism2_wiphy_privid;
50 /* Helper Functions */
51 static int prism2_result2err(int prism2_result)
55 switch (prism2_result) {
56 case P80211ENUM_resultcode_invalid_parameters:
59 case P80211ENUM_resultcode_implementation_failure:
62 case P80211ENUM_resultcode_not_supported:
73 static int prism2_domibset_uint32(struct wlandevice *wlandev,
76 struct p80211msg_dot11req_mibset msg;
77 struct p80211item_uint32 *mibitem =
78 (struct p80211item_uint32 *)&msg.mibattribute.data;
80 msg.msgcode = DIDMSG_DOT11REQ_MIBSET;
84 return p80211req_dorequest(wlandev, (u8 *)&msg);
87 static int prism2_domibset_pstr32(struct wlandevice *wlandev,
88 u32 did, u8 len, const u8 *data)
90 struct p80211msg_dot11req_mibset msg;
91 struct p80211item_pstr32 *mibitem =
92 (struct p80211item_pstr32 *)&msg.mibattribute.data;
94 msg.msgcode = DIDMSG_DOT11REQ_MIBSET;
96 mibitem->data.len = len;
97 memcpy(mibitem->data.data, data, len);
99 return p80211req_dorequest(wlandev, (u8 *)&msg);
102 /* The interface functions, called by the cfg80211 layer */
103 static int prism2_change_virtual_intf(struct wiphy *wiphy,
104 struct net_device *dev,
105 enum nl80211_iftype type,
106 struct vif_params *params)
108 struct wlandevice *wlandev = dev->ml_priv;
114 case NL80211_IFTYPE_ADHOC:
115 if (wlandev->macmode == WLAN_MACMODE_IBSS_STA)
117 wlandev->macmode = WLAN_MACMODE_IBSS_STA;
120 case NL80211_IFTYPE_STATION:
121 if (wlandev->macmode == WLAN_MACMODE_ESS_STA)
123 wlandev->macmode = WLAN_MACMODE_ESS_STA;
127 netdev_warn(dev, "Operation mode: %d not support\n", type);
131 /* Set Operation mode to the PORT TYPE RID */
132 result = prism2_domibset_uint32(wlandev,
133 DIDMIB_P2_STATIC_CNFPORTTYPE,
139 dev->ieee80211_ptr->iftype = type;
145 static int prism2_add_key(struct wiphy *wiphy, struct net_device *dev,
146 u8 key_index, bool pairwise, const u8 *mac_addr,
147 struct key_params *params)
149 struct wlandevice *wlandev = dev->ml_priv;
152 if (key_index >= NUM_WEPKEYS)
155 if (params->cipher != WLAN_CIPHER_SUITE_WEP40 &&
156 params->cipher != WLAN_CIPHER_SUITE_WEP104) {
157 pr_debug("Unsupported cipher suite\n");
161 if (prism2_domibset_uint32(wlandev,
162 DIDMIB_DOT11SMT_PRIVACYTABLE_WEPDEFAULTKEYID,
166 /* send key to driver */
167 did = didmib_dot11smt_wepdefaultkeystable_key(key_index + 1);
169 if (prism2_domibset_pstr32(wlandev, did, params->key_len, params->key))
174 static int prism2_get_key(struct wiphy *wiphy, struct net_device *dev,
175 u8 key_index, bool pairwise,
176 const u8 *mac_addr, void *cookie,
177 void (*callback)(void *cookie, struct key_params*))
179 struct wlandevice *wlandev = dev->ml_priv;
180 struct key_params params;
183 if (key_index >= NUM_WEPKEYS)
186 len = wlandev->wep_keylens[key_index];
187 memset(¶ms, 0, sizeof(params));
190 params.cipher = WLAN_CIPHER_SUITE_WEP104;
192 params.cipher = WLAN_CIPHER_SUITE_WEP104;
195 params.key_len = len;
196 params.key = wlandev->wep_keys[key_index];
199 callback(cookie, ¶ms);
204 static int prism2_del_key(struct wiphy *wiphy, struct net_device *dev,
205 u8 key_index, bool pairwise, const u8 *mac_addr)
207 struct wlandevice *wlandev = dev->ml_priv;
212 /* There is no direct way in the hardware (AFAIK) of removing
213 * a key, so we will cheat by setting the key to a bogus value
216 if (key_index >= NUM_WEPKEYS)
219 /* send key to driver */
220 did = didmib_dot11smt_wepdefaultkeystable_key(key_index + 1);
221 result = prism2_domibset_pstr32(wlandev, did, 13, "0000000000000");
229 static int prism2_set_default_key(struct wiphy *wiphy, struct net_device *dev,
230 u8 key_index, bool unicast, bool multicast)
232 struct wlandevice *wlandev = dev->ml_priv;
234 return prism2_domibset_uint32(wlandev,
235 DIDMIB_DOT11SMT_PRIVACYTABLE_WEPDEFAULTKEYID,
239 static int prism2_get_station(struct wiphy *wiphy, struct net_device *dev,
240 const u8 *mac, struct station_info *sinfo)
242 struct wlandevice *wlandev = dev->ml_priv;
243 struct p80211msg_lnxreq_commsquality quality;
246 memset(sinfo, 0, sizeof(*sinfo));
248 if (!wlandev || (wlandev->msdstate != WLAN_MSD_RUNNING))
251 /* build request message */
252 quality.msgcode = DIDMSG_LNXREQ_COMMSQUALITY;
253 quality.dbm.data = P80211ENUM_truth_true;
254 quality.dbm.status = P80211ENUM_msgitem_status_data_ok;
256 /* send message to nsd */
257 if (!wlandev->mlmerequest)
260 result = wlandev->mlmerequest(wlandev, (struct p80211msg *)&quality);
263 sinfo->txrate.legacy = quality.txrate.data;
264 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_BITRATE);
265 sinfo->signal = quality.level.data;
266 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_SIGNAL);
272 static int prism2_scan(struct wiphy *wiphy,
273 struct cfg80211_scan_request *request)
275 struct net_device *dev;
276 struct prism2_wiphy_private *priv = wiphy_priv(wiphy);
277 struct wlandevice *wlandev;
278 struct p80211msg_dot11req_scan msg1;
279 struct p80211msg_dot11req_scan_results msg2;
280 struct cfg80211_bss *bss;
281 struct cfg80211_scan_info info = {};
293 dev = request->wdev->netdev;
294 wlandev = dev->ml_priv;
296 if (priv->scan_request && priv->scan_request != request)
299 if (wlandev->macmode == WLAN_MACMODE_ESS_AP) {
300 netdev_err(dev, "Can't scan in AP mode\n");
304 priv->scan_request = request;
306 memset(&msg1, 0x00, sizeof(msg1));
307 msg1.msgcode = DIDMSG_DOT11REQ_SCAN;
308 msg1.bsstype.data = P80211ENUM_bsstype_any;
310 memset(&msg1.bssid.data.data, 0xFF, sizeof(msg1.bssid.data.data));
311 msg1.bssid.data.len = 6;
313 if (request->n_ssids > 0) {
314 msg1.scantype.data = P80211ENUM_scantype_active;
315 msg1.ssid.data.len = request->ssids->ssid_len;
316 memcpy(msg1.ssid.data.data,
317 request->ssids->ssid, request->ssids->ssid_len);
319 msg1.scantype.data = 0;
321 msg1.probedelay.data = 0;
324 (i < request->n_channels) && i < ARRAY_SIZE(prism2_channels);
326 msg1.channellist.data.data[i] =
327 ieee80211_frequency_to_channel(
328 request->channels[i]->center_freq);
329 msg1.channellist.data.len = request->n_channels;
331 msg1.maxchanneltime.data = 250;
332 msg1.minchanneltime.data = 200;
334 result = p80211req_dorequest(wlandev, (u8 *)&msg1);
336 err = prism2_result2err(msg1.resultcode.data);
339 /* Now retrieve scan results */
340 numbss = msg1.numbss.data;
342 for (i = 0; i < numbss; i++) {
345 memset(&msg2, 0, sizeof(msg2));
346 msg2.msgcode = DIDMSG_DOT11REQ_SCAN_RESULTS;
347 msg2.bssindex.data = i;
349 result = p80211req_dorequest(wlandev, (u8 *)&msg2);
351 (msg2.resultcode.data != P80211ENUM_resultcode_success)) {
355 ie_buf[0] = WLAN_EID_SSID;
356 ie_buf[1] = msg2.ssid.data.len;
357 ie_len = ie_buf[1] + 2;
358 memcpy(&ie_buf[2], &msg2.ssid.data.data, msg2.ssid.data.len);
359 freq = ieee80211_channel_to_frequency(msg2.dschannel.data,
361 bss = cfg80211_inform_bss(wiphy,
362 ieee80211_get_channel(wiphy, freq),
363 CFG80211_BSS_FTYPE_UNKNOWN,
364 (const u8 *)&msg2.bssid.data.data,
365 msg2.timestamp.data, msg2.capinfo.data,
366 msg2.beaconperiod.data,
369 (msg2.signal.data - 65536) * 100, /* Conversion to signed type */
378 cfg80211_put_bss(wiphy, bss);
382 err = prism2_result2err(msg2.resultcode.data);
385 info.aborted = !!(err);
386 cfg80211_scan_done(request, &info);
387 priv->scan_request = NULL;
391 static int prism2_set_wiphy_params(struct wiphy *wiphy, u32 changed)
393 struct prism2_wiphy_private *priv = wiphy_priv(wiphy);
394 struct wlandevice *wlandev = priv->wlandev;
399 if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
400 if (wiphy->rts_threshold == -1)
403 data = wiphy->rts_threshold;
405 result = prism2_domibset_uint32(wlandev,
406 DIDMIB_DOT11MAC_OPERATIONTABLE_RTSTHRESHOLD,
414 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
415 if (wiphy->frag_threshold == -1)
418 data = wiphy->frag_threshold;
420 result = prism2_domibset_uint32(wlandev,
421 DIDMIB_DOT11MAC_OPERATIONTABLE_FRAGMENTATIONTHRESHOLD,
433 static int prism2_connect(struct wiphy *wiphy, struct net_device *dev,
434 struct cfg80211_connect_params *sme)
436 struct wlandevice *wlandev = dev->ml_priv;
437 struct ieee80211_channel *channel = sme->channel;
438 struct p80211msg_lnxreq_autojoin msg_join;
440 int length = sme->ssid_len;
442 int is_wep = (sme->crypto.cipher_group == WLAN_CIPHER_SUITE_WEP40) ||
443 (sme->crypto.cipher_group == WLAN_CIPHER_SUITE_WEP104);
447 /* Set the channel */
449 chan = ieee80211_frequency_to_channel(channel->center_freq);
450 result = prism2_domibset_uint32(wlandev,
451 DIDMIB_DOT11PHY_DSSSTABLE_CURRENTCHANNEL,
457 /* Set the authorization */
458 if ((sme->auth_type == NL80211_AUTHTYPE_OPEN_SYSTEM) ||
459 ((sme->auth_type == NL80211_AUTHTYPE_AUTOMATIC) && !is_wep))
460 msg_join.authtype.data = P80211ENUM_authalg_opensystem;
461 else if ((sme->auth_type == NL80211_AUTHTYPE_SHARED_KEY) ||
462 ((sme->auth_type == NL80211_AUTHTYPE_AUTOMATIC) && is_wep))
463 msg_join.authtype.data = P80211ENUM_authalg_sharedkey;
466 "Unhandled authorisation type for connect (%d)\n",
469 /* Set the encryption - we only support wep */
472 if (sme->key_idx >= NUM_WEPKEYS) {
477 result = prism2_domibset_uint32(wlandev,
478 DIDMIB_DOT11SMT_PRIVACYTABLE_WEPDEFAULTKEYID,
483 /* send key to driver */
484 did = didmib_dot11smt_wepdefaultkeystable_key(
486 result = prism2_domibset_pstr32(wlandev,
493 /* Assume we should set privacy invoked and exclude unencrypted
494 * We could possible use sme->privacy here, but the assumption
495 * seems reasonable anyways
497 result = prism2_domibset_uint32(wlandev,
498 DIDMIB_DOT11SMT_PRIVACYTABLE_PRIVACYINVOKED,
499 P80211ENUM_truth_true);
503 result = prism2_domibset_uint32(wlandev,
504 DIDMIB_DOT11SMT_PRIVACYTABLE_EXCLUDEUNENCRYPTED,
505 P80211ENUM_truth_true);
510 /* Assume we should unset privacy invoked
511 * and exclude unencrypted
513 result = prism2_domibset_uint32(wlandev,
514 DIDMIB_DOT11SMT_PRIVACYTABLE_PRIVACYINVOKED,
515 P80211ENUM_truth_false);
519 result = prism2_domibset_uint32(wlandev,
520 DIDMIB_DOT11SMT_PRIVACYTABLE_EXCLUDEUNENCRYPTED,
521 P80211ENUM_truth_false);
526 /* Now do the actual join. Note there is no way that I can
527 * see to request a specific bssid
529 msg_join.msgcode = DIDMSG_LNXREQ_AUTOJOIN;
531 memcpy(msg_join.ssid.data.data, sme->ssid, length);
532 msg_join.ssid.data.len = length;
534 result = p80211req_dorequest(wlandev, (u8 *)&msg_join);
543 static int prism2_disconnect(struct wiphy *wiphy, struct net_device *dev,
546 struct wlandevice *wlandev = dev->ml_priv;
547 struct p80211msg_lnxreq_autojoin msg_join;
551 /* Do a join, with a bogus ssid. Thats the only way I can think of */
552 msg_join.msgcode = DIDMSG_LNXREQ_AUTOJOIN;
554 memcpy(msg_join.ssid.data.data, "---", 3);
555 msg_join.ssid.data.len = 3;
557 result = p80211req_dorequest(wlandev, (u8 *)&msg_join);
565 static int prism2_join_ibss(struct wiphy *wiphy, struct net_device *dev,
566 struct cfg80211_ibss_params *params)
571 static int prism2_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
576 static int prism2_set_tx_power(struct wiphy *wiphy, struct wireless_dev *wdev,
577 enum nl80211_tx_power_setting type, int mbm)
579 struct prism2_wiphy_private *priv = wiphy_priv(wiphy);
580 struct wlandevice *wlandev = priv->wlandev;
585 if (type == NL80211_TX_POWER_AUTOMATIC)
588 data = MBM_TO_DBM(mbm);
590 result = prism2_domibset_uint32(wlandev,
591 DIDMIB_DOT11PHY_TXPOWERTABLE_CURRENTTXPOWERLEVEL,
603 static int prism2_get_tx_power(struct wiphy *wiphy, struct wireless_dev *wdev,
606 struct prism2_wiphy_private *priv = wiphy_priv(wiphy);
607 struct wlandevice *wlandev = priv->wlandev;
608 struct p80211msg_dot11req_mibget msg;
609 struct p80211item_uint32 *mibitem;
613 mibitem = (struct p80211item_uint32 *)&msg.mibattribute.data;
614 msg.msgcode = DIDMSG_DOT11REQ_MIBGET;
615 mibitem->did = DIDMIB_DOT11PHY_TXPOWERTABLE_CURRENTTXPOWERLEVEL;
617 result = p80211req_dorequest(wlandev, (u8 *)&msg);
624 *dbm = mibitem->data;
630 /* Interface callback functions, passing data back up to the cfg80211 layer */
631 void prism2_connect_result(struct wlandevice *wlandev, u8 failed)
633 u16 status = failed ?
634 WLAN_STATUS_UNSPECIFIED_FAILURE : WLAN_STATUS_SUCCESS;
636 cfg80211_connect_result(wlandev->netdev, wlandev->bssid,
637 NULL, 0, NULL, 0, status, GFP_KERNEL);
640 void prism2_disconnected(struct wlandevice *wlandev)
642 cfg80211_disconnected(wlandev->netdev, 0, NULL,
643 0, false, GFP_KERNEL);
646 void prism2_roamed(struct wlandevice *wlandev)
648 struct cfg80211_roam_info roam_info = {
649 .bssid = wlandev->bssid,
652 cfg80211_roamed(wlandev->netdev, &roam_info, GFP_KERNEL);
655 /* Structures for declaring wiphy interface */
656 static const struct cfg80211_ops prism2_usb_cfg_ops = {
657 .change_virtual_intf = prism2_change_virtual_intf,
658 .add_key = prism2_add_key,
659 .get_key = prism2_get_key,
660 .del_key = prism2_del_key,
661 .set_default_key = prism2_set_default_key,
662 .get_station = prism2_get_station,
664 .set_wiphy_params = prism2_set_wiphy_params,
665 .connect = prism2_connect,
666 .disconnect = prism2_disconnect,
667 .join_ibss = prism2_join_ibss,
668 .leave_ibss = prism2_leave_ibss,
669 .set_tx_power = prism2_set_tx_power,
670 .get_tx_power = prism2_get_tx_power,
673 /* Functions to create/free wiphy interface */
674 static struct wiphy *wlan_create_wiphy(struct device *dev,
675 struct wlandevice *wlandev)
678 struct prism2_wiphy_private *priv;
680 wiphy = wiphy_new(&prism2_usb_cfg_ops, sizeof(*priv));
684 priv = wiphy_priv(wiphy);
685 priv->wlandev = wlandev;
686 memcpy(priv->channels, prism2_channels, sizeof(prism2_channels));
687 memcpy(priv->rates, prism2_rates, sizeof(prism2_rates));
688 priv->band.channels = priv->channels;
689 priv->band.n_channels = ARRAY_SIZE(prism2_channels);
690 priv->band.bitrates = priv->rates;
691 priv->band.n_bitrates = ARRAY_SIZE(prism2_rates);
692 priv->band.band = NL80211_BAND_2GHZ;
693 priv->band.ht_cap.ht_supported = false;
694 wiphy->bands[NL80211_BAND_2GHZ] = &priv->band;
696 set_wiphy_dev(wiphy, dev);
697 wiphy->privid = prism2_wiphy_privid;
698 wiphy->max_scan_ssids = 1;
699 wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION)
700 | BIT(NL80211_IFTYPE_ADHOC);
701 wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
702 wiphy->n_cipher_suites = PRISM2_NUM_CIPHER_SUITES;
703 wiphy->cipher_suites = prism2_cipher_suites;
705 if (wiphy_register(wiphy) < 0) {
713 static void wlan_free_wiphy(struct wiphy *wiphy)
715 wiphy_unregister(wiphy);