staging/rtl8192e/rtllib_wx.c

0001 // SPDX-License-Identifier: GPL-2.0
0002 /*
0003  * Copyright(c) 2004 Intel Corporation. All rights reserved.
0004  *
0005  * Portions of this file are based on the WEP enablement code provided by the
0006  * Host AP project hostap-drivers v0.1.3
0007  * Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen
0008  * <jkmaline@cc.hut.fi>
0009  * Copyright (c) 2002-2003, Jouni Malinen <jkmaline@cc.hut.fi>
0010  *
0011  * Contact Information:
0012  * James P. Ketrenos <ipw2100-admin@linux.intel.com>
0013  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
0014  */
0015 #include <linux/wireless.h>
0016 #include <linux/kmod.h>
0017 #include <linux/module.h>
0018 #include <linux/etherdevice.h>
0019 #include "rtllib.h"
0020
0021 static const char * const rtllib_modes[] = {
0022     "a", "b", "g", "?", "N-24G", "N-5G"
0023 };
0024
0025 #define MAX_CUSTOM_LEN 64
0026 static inline char *rtl819x_translate_scan(struct rtllib_device *ieee,
0027                        char *start, char *stop,
0028                        struct rtllib_network *network,
0029                        struct iw_request_info *info)
0030 {
0031     char custom[MAX_CUSTOM_LEN];
0032     char proto_name[IFNAMSIZ];
0033     char *pname = proto_name;
0034     char *p;
0035     struct iw_event iwe;
0036     int i, j;
0037     u16 max_rate, rate;
0038     static u8   EWC11NHTCap[] = {0x00, 0x90, 0x4c, 0x33};
0039
0040     /* First entry *MUST* be the AP MAC address */
0041     iwe.cmd = SIOCGIWAP;
0042     iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
0043     ether_addr_copy(iwe.u.ap_addr.sa_data, network->bssid);
0044     start = iwe_stream_add_event_rsl(info, start, stop,
0045                      &iwe, IW_EV_ADDR_LEN);
0046     /* Remaining entries will be displayed in the order we provide them */
0047
0048     /* Add the ESSID */
0049     iwe.cmd = SIOCGIWESSID;
0050     iwe.u.data.flags = 1;
0051     if (network->ssid_len > 0) {
0052         iwe.u.data.length = min_t(u8, network->ssid_len, 32);
0053         start = iwe_stream_add_point_rsl(info, start, stop, &iwe,
0054                          network->ssid);
0055     } else if (network->hidden_ssid_len == 0) {
0056         iwe.u.data.length = sizeof("<hidden>");
0057         start = iwe_stream_add_point_rsl(info, start, stop,
0058                          &iwe, "<hidden>");
0059     } else {
0060         iwe.u.data.length = min_t(u8, network->hidden_ssid_len, 32);
0061         start = iwe_stream_add_point_rsl(info, start, stop, &iwe,
0062                          network->hidden_ssid);
0063     }
0064     /* Add the protocol name */
0065     iwe.cmd = SIOCGIWNAME;
0066     for (i = 0; i < ARRAY_SIZE(rtllib_modes); i++) {
0067         if (network->mode & BIT(i)) {
0068             strcpy(pname, rtllib_modes[i]);
0069             pname += strlen(rtllib_modes[i]);
0070         }
0071     }
0072     *pname = '\0';
0073     snprintf(iwe.u.name, IFNAMSIZ, "IEEE802.11%s", proto_name);
0074     start = iwe_stream_add_event_rsl(info, start, stop,
0075                      &iwe, IW_EV_CHAR_LEN);
0076     /* Add mode */
0077     iwe.cmd = SIOCGIWMODE;
0078     if (network->capability &
0079         (WLAN_CAPABILITY_ESS | WLAN_CAPABILITY_IBSS)) {
0080         if (network->capability & WLAN_CAPABILITY_ESS)
0081             iwe.u.mode = IW_MODE_MASTER;
0082         else
0083             iwe.u.mode = IW_MODE_ADHOC;
0084         start = iwe_stream_add_event_rsl(info, start, stop,
0085                          &iwe, IW_EV_UINT_LEN);
0086     }
0087
0088     /* Add frequency/channel */
0089     iwe.cmd = SIOCGIWFREQ;
0090     iwe.u.freq.m = network->channel;
0091     iwe.u.freq.e = 0;
0092     iwe.u.freq.i = 0;
0093     start = iwe_stream_add_event_rsl(info, start, stop, &iwe,
0094                      IW_EV_FREQ_LEN);
0095
0096     /* Add encryption capability */
0097     iwe.cmd = SIOCGIWENCODE;
0098     if (network->capability & WLAN_CAPABILITY_PRIVACY)
0099         iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY;
0100     else
0101         iwe.u.data.flags = IW_ENCODE_DISABLED;
0102     iwe.u.data.length = 0;
0103     start = iwe_stream_add_point_rsl(info, start, stop,
0104                      &iwe, network->ssid);
0105     /* Add basic and extended rates */
0106     max_rate = 0;
0107     p = custom;
0108     p += scnprintf(p, MAX_CUSTOM_LEN - (p - custom), " Rates (Mb/s): ");
0109     for (i = 0, j = 0; i < network->rates_len;) {
0110         if (j < network->rates_ex_len &&
0111             ((network->rates_ex[j] & 0x7F) <
0112              (network->rates[i] & 0x7F)))
0113             rate = network->rates_ex[j++] & 0x7F;
0114         else
0115             rate = network->rates[i++] & 0x7F;
0116         if (rate > max_rate)
0117             max_rate = rate;
0118         p += scnprintf(p, MAX_CUSTOM_LEN - (p - custom),
0119                   "%d%s ", rate >> 1, (rate & 1) ? ".5" : "");
0120     }
0121     for (; j < network->rates_ex_len; j++) {
0122         rate = network->rates_ex[j] & 0x7F;
0123         p += scnprintf(p, MAX_CUSTOM_LEN - (p - custom),
0124                   "%d%s ", rate >> 1, (rate & 1) ? ".5" : "");
0125         if (rate > max_rate)
0126             max_rate = rate;
0127     }
0128
0129     if (network->mode >= IEEE_N_24G) {
0130         struct ht_capab_ele *ht_cap = NULL;
0131         bool is40M = false, isShortGI = false;
0132         u8 max_mcs = 0;
0133
0134         if (!memcmp(network->bssht.bd_ht_cap_buf, EWC11NHTCap, 4))
0135             ht_cap = (struct ht_capab_ele *)
0136                  &network->bssht.bd_ht_cap_buf[4];
0137         else
0138             ht_cap = (struct ht_capab_ele *)
0139                  &network->bssht.bd_ht_cap_buf[0];
0140         is40M = (ht_cap->ChlWidth) ? 1 : 0;
0141         isShortGI = (ht_cap->ChlWidth) ?
0142                 ((ht_cap->ShortGI40Mhz) ? 1 : 0) :
0143                 ((ht_cap->ShortGI20Mhz) ? 1 : 0);
0144
0145         max_mcs = HTGetHighestMCSRate(ieee, ht_cap->MCS,
0146                           MCS_FILTER_ALL);
0147         rate = MCS_DATA_RATE[is40M][isShortGI][max_mcs & 0x7f];
0148         if (rate > max_rate)
0149             max_rate = rate;
0150     }
0151     iwe.cmd = SIOCGIWRATE;
0152     iwe.u.bitrate.disabled = 0;
0153     iwe.u.bitrate.fixed = 0;
0154     iwe.u.bitrate.value = max_rate * 500000;
0155     start = iwe_stream_add_event_rsl(info, start, stop, &iwe, IW_EV_PARAM_LEN);
0156     iwe.cmd = IWEVCUSTOM;
0157     iwe.u.data.length = p - custom;
0158     if (iwe.u.data.length)
0159         start = iwe_stream_add_point_rsl(info, start, stop,
0160                          &iwe, custom);
0161     /* Add quality statistics */
0162     /* TODO: Fix these values... */
0163     iwe.cmd = IWEVQUAL;
0164     iwe.u.qual.qual = network->stats.signal;
0165     iwe.u.qual.level = network->stats.rssi;
0166     iwe.u.qual.noise = network->stats.noise;
0167     iwe.u.qual.updated = network->stats.mask & RTLLIB_STATMASK_WEMASK;
0168     if (!(network->stats.mask & RTLLIB_STATMASK_RSSI))
0169         iwe.u.qual.updated |= IW_QUAL_LEVEL_INVALID;
0170     if (!(network->stats.mask & RTLLIB_STATMASK_NOISE))
0171         iwe.u.qual.updated |= IW_QUAL_NOISE_INVALID;
0172     if (!(network->stats.mask & RTLLIB_STATMASK_SIGNAL))
0173         iwe.u.qual.updated |= IW_QUAL_QUAL_INVALID;
0174     iwe.u.qual.updated = 7;
0175     start = iwe_stream_add_event_rsl(info, start, stop, &iwe, IW_EV_QUAL_LEN);
0176
0177     iwe.cmd = IWEVCUSTOM;
0178     p = custom;
0179     iwe.u.data.length = p - custom;
0180     if (iwe.u.data.length)
0181         start = iwe_stream_add_point_rsl(info, start, stop, &iwe, custom);
0182
0183     memset(&iwe, 0, sizeof(iwe));
0184     if (network->wpa_ie_len) {
0185         char buf[MAX_WPA_IE_LEN];
0186
0187         memcpy(buf, network->wpa_ie, network->wpa_ie_len);
0188         iwe.cmd = IWEVGENIE;
0189         iwe.u.data.length = network->wpa_ie_len;
0190         start = iwe_stream_add_point_rsl(info, start, stop, &iwe, buf);
0191     }
0192     memset(&iwe, 0, sizeof(iwe));
0193     if (network->rsn_ie_len) {
0194         char buf[MAX_WPA_IE_LEN];
0195
0196         memcpy(buf, network->rsn_ie, network->rsn_ie_len);
0197         iwe.cmd = IWEVGENIE;
0198         iwe.u.data.length = network->rsn_ie_len;
0199         start = iwe_stream_add_point_rsl(info, start, stop, &iwe, buf);
0200     }
0201
0202     /* add info for WZC */
0203     memset(&iwe, 0, sizeof(iwe));
0204     if (network->wzc_ie_len) {
0205         char buf[MAX_WZC_IE_LEN];
0206
0207         memcpy(buf, network->wzc_ie, network->wzc_ie_len);
0208         iwe.cmd = IWEVGENIE;
0209         iwe.u.data.length = network->wzc_ie_len;
0210         start = iwe_stream_add_point_rsl(info, start, stop, &iwe, buf);
0211     }
0212
0213     /* Add EXTRA: Age to display seconds since last beacon/probe response
0214      * for given network.
0215      */
0216     iwe.cmd = IWEVCUSTOM;
0217     p = custom;
0218     p += scnprintf(p, MAX_CUSTOM_LEN - (p - custom),
0219               " Last beacon: %lums ago",
0220               (jiffies - network->last_scanned) / (HZ / 100));
0221     iwe.u.data.length = p - custom;
0222     if (iwe.u.data.length)
0223         start = iwe_stream_add_point_rsl(info, start, stop,
0224                          &iwe, custom);
0225
0226     return start;
0227 }
0228
0229 int rtllib_wx_get_scan(struct rtllib_device *ieee,
0230                struct iw_request_info *info,
0231                union iwreq_data *wrqu, char *extra)
0232 {
0233     struct rtllib_network *network;
0234     unsigned long flags;
0235
0236     char *ev = extra;
0237     char *stop = ev + wrqu->data.length;
0238     int i = 0;
0239     int err = 0;
0240
0241     netdev_dbg(ieee->dev, "Getting scan\n");
0242     mutex_lock(&ieee->wx_mutex);
0243     spin_lock_irqsave(&ieee->lock, flags);
0244
0245     list_for_each_entry(network, &ieee->network_list, list) {
0246         i++;
0247         if ((stop - ev) < 200) {
0248             err = -E2BIG;
0249             break;
0250         }
0251         if (ieee->scan_age == 0 ||
0252             time_after(network->last_scanned + ieee->scan_age, jiffies))
0253             ev = rtl819x_translate_scan(ieee, ev, stop, network,
0254                             info);
0255         else
0256             netdev_dbg(ieee->dev,
0257                    "Network '%s ( %pM)' hidden due to age (%lums).\n",
0258                    escape_essid(network->ssid,
0259                         network->ssid_len),
0260                    network->bssid,
0261                    (jiffies - network->last_scanned) /
0262                    (HZ / 100));
0263     }
0264
0265     spin_unlock_irqrestore(&ieee->lock, flags);
0266     mutex_unlock(&ieee->wx_mutex);
0267     wrqu->data.length = ev -  extra;
0268     wrqu->data.flags = 0;
0269
0270     netdev_dbg(ieee->dev, "%s(): %d networks returned.\n", __func__, i);
0271
0272     return err;
0273 }
0274 EXPORT_SYMBOL(rtllib_wx_get_scan);
0275
0276 int rtllib_wx_set_encode(struct rtllib_device *ieee,
0277              struct iw_request_info *info,
0278              union iwreq_data *wrqu, char *keybuf)
0279 {
0280     struct iw_point *erq = &wrqu->encoding;
0281     struct net_device *dev = ieee->dev;
0282     struct rtllib_security sec = {
0283         .flags = 0
0284     };
0285     int i, key, key_provided, len;
0286     struct lib80211_crypt_data **crypt;
0287
0288     key = erq->flags & IW_ENCODE_INDEX;
0289     if (key) {
0290         if (key > NUM_WEP_KEYS)
0291             return -EINVAL;
0292         key--;
0293         key_provided = 1;
0294     } else {
0295         key_provided = 0;
0296         key = ieee->crypt_info.tx_keyidx;
0297     }
0298
0299     netdev_dbg(ieee->dev, "Key: %d [%s]\n", key, key_provided ?
0300                "provided" : "default");
0301     crypt = &ieee->crypt_info.crypt[key];
0302     if (erq->flags & IW_ENCODE_DISABLED) {
0303         if (key_provided && *crypt) {
0304             netdev_dbg(ieee->dev,
0305                    "Disabling encryption on key %d.\n", key);
0306             lib80211_crypt_delayed_deinit(&ieee->crypt_info, crypt);
0307         } else {
0308             netdev_dbg(ieee->dev, "Disabling encryption.\n");
0309         }
0310
0311         /* Check all the keys to see if any are still configured,
0312          * and if no key index was provided, de-init them all
0313          */
0314         for (i = 0; i < NUM_WEP_KEYS; i++) {
0315             if (ieee->crypt_info.crypt[i]) {
0316                 if (key_provided)
0317                     break;
0318                 lib80211_crypt_delayed_deinit(&ieee->crypt_info,
0319                                   &ieee->crypt_info.crypt[i]);
0320             }
0321         }
0322
0323         if (i == NUM_WEP_KEYS) {
0324             sec.enabled = 0;
0325             sec.level = SEC_LEVEL_0;
0326             sec.flags |= SEC_ENABLED | SEC_LEVEL;
0327         }
0328
0329         goto done;
0330     }
0331
0332     sec.enabled = 1;
0333     sec.flags |= SEC_ENABLED;
0334
0335     if (*crypt && (*crypt)->ops &&
0336         strcmp((*crypt)->ops->name, "R-WEP") != 0) {
0337         /* changing to use WEP; deinit previously used algorithm
0338          * on this key
0339          */
0340         lib80211_crypt_delayed_deinit(&ieee->crypt_info, crypt);
0341     }
0342
0343     if (!*crypt) {
0344         struct lib80211_crypt_data *new_crypt;
0345
0346         /* take WEP into use */
0347         new_crypt = kzalloc(sizeof(*new_crypt), GFP_KERNEL);
0348         if (!new_crypt)
0349             return -ENOMEM;
0350         new_crypt->ops = lib80211_get_crypto_ops("R-WEP");
0351         if (!new_crypt->ops) {
0352             request_module("rtllib_crypt_wep");
0353             new_crypt->ops = lib80211_get_crypto_ops("R-WEP");
0354         }
0355
0356         if (new_crypt->ops)
0357             new_crypt->priv = new_crypt->ops->init(key);
0358
0359         if (!new_crypt->ops || !new_crypt->priv) {
0360             kfree(new_crypt);
0361             new_crypt = NULL;
0362
0363             netdev_warn(dev,
0364                     "%s: could not initialize WEP: load module rtllib_crypt_wep\n",
0365                     dev->name);
0366             return -EOPNOTSUPP;
0367         }
0368         *crypt = new_crypt;
0369     }
0370
0371     /* If a new key was provided, set it up */
0372     if (erq->length > 0) {
0373         len = erq->length <= 5 ? 5 : 13;
0374         memcpy(sec.keys[key], keybuf, erq->length);
0375         if (len > erq->length)
0376             memset(sec.keys[key] + erq->length, 0,
0377                    len - erq->length);
0378         netdev_dbg(ieee->dev, "Setting key %d to '%s' (%d:%d bytes)\n",
0379                key, escape_essid(sec.keys[key], len), erq->length,
0380                len);
0381         sec.key_sizes[key] = len;
0382         (*crypt)->ops->set_key(sec.keys[key], len, NULL,
0383                        (*crypt)->priv);
0384         sec.flags |= (1 << key);
0385         /* This ensures a key will be activated if no key is
0386          * explicitly set
0387          */
0388         if (key == sec.active_key)
0389             sec.flags |= SEC_ACTIVE_KEY;
0390         ieee->crypt_info.tx_keyidx = key;
0391
0392     } else {
0393         len = (*crypt)->ops->get_key(sec.keys[key], WEP_KEY_LEN,
0394                          NULL, (*crypt)->priv);
0395         if (len == 0) {
0396             /* Set a default key of all 0 */
0397             netdev_info(ieee->dev, "Setting key %d to all zero.\n", key);
0398
0399             memset(sec.keys[key], 0, 13);
0400             (*crypt)->ops->set_key(sec.keys[key], 13, NULL,
0401                            (*crypt)->priv);
0402             sec.key_sizes[key] = 13;
0403             sec.flags |= (1 << key);
0404         }
0405
0406         /* No key data - just set the default TX key index */
0407         if (key_provided) {
0408             netdev_dbg(ieee->dev,
0409                    "Setting key %d as default Tx key.\n", key);
0410             ieee->crypt_info.tx_keyidx = key;
0411             sec.active_key = key;
0412             sec.flags |= SEC_ACTIVE_KEY;
0413         }
0414     }
0415  done:
0416     ieee->open_wep = !(erq->flags & IW_ENCODE_RESTRICTED);
0417     ieee->auth_mode = ieee->open_wep ? WLAN_AUTH_OPEN :
0418               WLAN_AUTH_SHARED_KEY;
0419     sec.auth_mode = ieee->open_wep ? WLAN_AUTH_OPEN : WLAN_AUTH_SHARED_KEY;
0420     sec.flags |= SEC_AUTH_MODE;
0421     netdev_dbg(ieee->dev, "Auth: %s\n", sec.auth_mode == WLAN_AUTH_OPEN ?
0422                "OPEN" : "SHARED KEY");
0423
0424     /* For now we just support WEP, so only set that security level...
0425      * TODO: When WPA is added this is one place that needs to change
0426      */
0427     sec.flags |= SEC_LEVEL;
0428     sec.level = SEC_LEVEL_1; /* 40 and 104 bit WEP */
0429
0430     if (ieee->set_security)
0431         ieee->set_security(dev, &sec);
0432
0433     /* Do not reset port if card is in Managed mode since resetting will
0434      * generate new IEEE 802.11 authentication which may end up in looping
0435      * with IEEE 802.1X.  If your hardware requires a reset after WEP
0436      * configuration (for example... Prism2), implement the reset_port in
0437      * the callbacks structures used to initialize the 802.11 stack.
0438      */
0439     if (ieee->reset_on_keychange &&
0440         ieee->iw_mode != IW_MODE_INFRA &&
0441         ieee->reset_port && ieee->reset_port(dev)) {
0442         netdev_dbg(dev, "%s: reset_port failed\n", dev->name);
0443         return -EINVAL;
0444     }
0445     return 0;
0446 }
0447 EXPORT_SYMBOL(rtllib_wx_set_encode);
0448
0449 int rtllib_wx_get_encode(struct rtllib_device *ieee,
0450              struct iw_request_info *info,
0451              union iwreq_data *wrqu, char *keybuf)
0452 {
0453     struct iw_point *erq = &wrqu->encoding;
0454     int len, key;
0455     struct lib80211_crypt_data *crypt;
0456
0457     if (ieee->iw_mode == IW_MODE_MONITOR)
0458         return -1;
0459
0460     key = erq->flags & IW_ENCODE_INDEX;
0461     if (key) {
0462         if (key > NUM_WEP_KEYS)
0463             return -EINVAL;
0464         key--;
0465     } else {
0466         key = ieee->crypt_info.tx_keyidx;
0467     }
0468     crypt = ieee->crypt_info.crypt[key];
0469
0470     erq->flags = key + 1;
0471
0472     if (!crypt || !crypt->ops) {
0473         erq->length = 0;
0474         erq->flags |= IW_ENCODE_DISABLED;
0475         return 0;
0476     }
0477     len = crypt->ops->get_key(keybuf, SCM_KEY_LEN, NULL, crypt->priv);
0478
0479     erq->length = max(len, 0);
0480
0481     erq->flags |= IW_ENCODE_ENABLED;
0482
0483     if (ieee->open_wep)
0484         erq->flags |= IW_ENCODE_OPEN;
0485     else
0486         erq->flags |= IW_ENCODE_RESTRICTED;
0487
0488     return 0;
0489 }
0490 EXPORT_SYMBOL(rtllib_wx_get_encode);
0491
0492 int rtllib_wx_set_encode_ext(struct rtllib_device *ieee,
0493                  struct iw_request_info *info,
0494                  union iwreq_data *wrqu, char *extra)
0495 {
0496     int ret = 0;
0497     struct net_device *dev = ieee->dev;
0498     struct iw_point *encoding = &wrqu->encoding;
0499     struct iw_encode_ext *ext = (struct iw_encode_ext *)extra;
0500     int i, idx;
0501     int group_key = 0;
0502     const char *alg, *module;
0503     struct lib80211_crypto_ops *ops;
0504     struct lib80211_crypt_data **crypt;
0505
0506     struct rtllib_security sec = {
0507         .flags = 0,
0508     };
0509     idx = encoding->flags & IW_ENCODE_INDEX;
0510     if (idx) {
0511         if (idx < 1 || idx > NUM_WEP_KEYS)
0512             return -EINVAL;
0513         idx--;
0514     } else {
0515         idx = ieee->crypt_info.tx_keyidx;
0516     }
0517     if (ext->ext_flags & IW_ENCODE_EXT_GROUP_KEY) {
0518         crypt = &ieee->crypt_info.crypt[idx];
0519         group_key = 1;
0520     } else {
0521         /* some Cisco APs use idx>0 for unicast in dynamic WEP */
0522         if (idx != 0 && ext->alg != IW_ENCODE_ALG_WEP)
0523             return -EINVAL;
0524         if (ieee->iw_mode == IW_MODE_INFRA)
0525             crypt = &ieee->crypt_info.crypt[idx];
0526         else
0527             return -EINVAL;
0528     }
0529
0530     sec.flags |= SEC_ENABLED;
0531     if ((encoding->flags & IW_ENCODE_DISABLED) ||
0532         ext->alg == IW_ENCODE_ALG_NONE) {
0533         if (*crypt)
0534             lib80211_crypt_delayed_deinit(&ieee->crypt_info, crypt);
0535
0536         for (i = 0; i < NUM_WEP_KEYS; i++) {
0537             if (ieee->crypt_info.crypt[i])
0538                 break;
0539         }
0540         if (i == NUM_WEP_KEYS) {
0541             sec.enabled = 0;
0542             sec.level = SEC_LEVEL_0;
0543             sec.flags |= SEC_LEVEL;
0544         }
0545         goto done;
0546     }
0547
0548     sec.enabled = 1;
0549     switch (ext->alg) {
0550     case IW_ENCODE_ALG_WEP:
0551         alg = "R-WEP";
0552         module = "rtllib_crypt_wep";
0553         break;
0554     case IW_ENCODE_ALG_TKIP:
0555         alg = "R-TKIP";
0556         module = "rtllib_crypt_tkip";
0557         break;
0558     case IW_ENCODE_ALG_CCMP:
0559         alg = "R-CCMP";
0560         module = "rtllib_crypt_ccmp";
0561         break;
0562     default:
0563         netdev_dbg(ieee->dev, "Unknown crypto alg %d\n", ext->alg);
0564         ret = -EINVAL;
0565         goto done;
0566     }
0567     netdev_dbg(dev, "alg name:%s\n", alg);
0568
0569     ops = lib80211_get_crypto_ops(alg);
0570     if (!ops) {
0571         char tempbuf[100];
0572
0573         memset(tempbuf, 0x00, 100);
0574         sprintf(tempbuf, "%s", module);
0575         request_module("%s", tempbuf);
0576         ops = lib80211_get_crypto_ops(alg);
0577     }
0578     if (!ops) {
0579         netdev_info(dev, "========>unknown crypto alg %d\n", ext->alg);
0580         ret = -EINVAL;
0581         goto done;
0582     }
0583
0584     if (!*crypt || (*crypt)->ops != ops) {
0585         struct lib80211_crypt_data *new_crypt;
0586
0587         lib80211_crypt_delayed_deinit(&ieee->crypt_info, crypt);
0588
0589         new_crypt = kzalloc(sizeof(*new_crypt), GFP_KERNEL);
0590         if (!new_crypt) {
0591             ret = -ENOMEM;
0592             goto done;
0593         }
0594         new_crypt->ops = ops;
0595         if (new_crypt->ops && try_module_get(new_crypt->ops->owner))
0596             new_crypt->priv = new_crypt->ops->init(idx);
0597
0598         if (!new_crypt->priv) {
0599             kfree(new_crypt);
0600             ret = -EINVAL;
0601             goto done;
0602         }
0603         *crypt = new_crypt;
0604     }
0605
0606     if (ext->key_len > 0 && (*crypt)->ops->set_key &&
0607         (*crypt)->ops->set_key(ext->key, ext->key_len, ext->rx_seq,
0608                    (*crypt)->priv) < 0) {
0609         netdev_info(dev, "key setting failed\n");
0610         ret = -EINVAL;
0611         goto done;
0612     }
0613     if (ext->ext_flags & IW_ENCODE_EXT_SET_TX_KEY) {
0614         ieee->crypt_info.tx_keyidx = idx;
0615         sec.active_key = idx;
0616         sec.flags |= SEC_ACTIVE_KEY;
0617     }
0618     if (ext->alg != IW_ENCODE_ALG_NONE) {
0619         sec.key_sizes[idx] = ext->key_len;
0620         sec.flags |= (1 << idx);
0621         if (ext->alg == IW_ENCODE_ALG_WEP) {
0622             sec.flags |= SEC_LEVEL;
0623             sec.level = SEC_LEVEL_1;
0624         } else if (ext->alg == IW_ENCODE_ALG_TKIP) {
0625             sec.flags |= SEC_LEVEL;
0626             sec.level = SEC_LEVEL_2;
0627         } else if (ext->alg == IW_ENCODE_ALG_CCMP) {
0628             sec.flags |= SEC_LEVEL;
0629             sec.level = SEC_LEVEL_3;
0630         }
0631         /* Don't set sec level for group keys. */
0632         if (group_key)
0633             sec.flags &= ~SEC_LEVEL;
0634     }
0635 done:
0636     if (ieee->set_security)
0637         ieee->set_security(ieee->dev, &sec);
0638
0639     if (ieee->reset_on_keychange &&
0640         ieee->iw_mode != IW_MODE_INFRA &&
0641         ieee->reset_port && ieee->reset_port(dev)) {
0642         netdev_dbg(ieee->dev, "Port reset failed\n");
0643         return -EINVAL;
0644     }
0645     return ret;
0646 }
0647 EXPORT_SYMBOL(rtllib_wx_set_encode_ext);
0648
0649 int rtllib_wx_set_mlme(struct rtllib_device *ieee,
0650                struct iw_request_info *info,
0651                union iwreq_data *wrqu, char *extra)
0652 {
0653     u8 i = 0;
0654     bool deauth = false;
0655     struct iw_mlme *mlme = (struct iw_mlme *)extra;
0656
0657     if (ieee->state != RTLLIB_LINKED)
0658         return -ENOLINK;
0659
0660     mutex_lock(&ieee->wx_mutex);
0661
0662     switch (mlme->cmd) {
0663     case IW_MLME_DEAUTH:
0664         deauth = true;
0665         fallthrough;
0666     case IW_MLME_DISASSOC:
0667         if (deauth)
0668             netdev_info(ieee->dev, "disauth packet !\n");
0669         else
0670             netdev_info(ieee->dev, "dis associate packet!\n");
0671
0672         ieee->cannot_notify = true;
0673
0674         SendDisassociation(ieee, deauth, mlme->reason_code);
0675         rtllib_disassociate(ieee);
0676
0677         ieee->wap_set = 0;
0678         for (i = 0; i < 6; i++)
0679             ieee->current_network.bssid[i] = 0x55;
0680
0681         ieee->ssid_set = 0;
0682         ieee->current_network.ssid[0] = '\0';
0683         ieee->current_network.ssid_len = 0;
0684         break;
0685     default:
0686         mutex_unlock(&ieee->wx_mutex);
0687         return -EOPNOTSUPP;
0688     }
0689
0690     mutex_unlock(&ieee->wx_mutex);
0691
0692     return 0;
0693 }
0694 EXPORT_SYMBOL(rtllib_wx_set_mlme);
0695
0696 int rtllib_wx_set_auth(struct rtllib_device *ieee,
0697                struct iw_request_info *info,
0698                struct iw_param *data, char *extra)
0699 {
0700     switch (data->flags & IW_AUTH_INDEX) {
0701     case IW_AUTH_WPA_VERSION:
0702         break;
0703     case IW_AUTH_CIPHER_PAIRWISE:
0704     case IW_AUTH_CIPHER_GROUP:
0705     case IW_AUTH_KEY_MGMT:
0706         /* Host AP driver does not use these parameters and allows
0707          * wpa_supplicant to control them internally.
0708          */
0709         break;
0710     case IW_AUTH_TKIP_COUNTERMEASURES:
0711         ieee->tkip_countermeasures = data->value;
0712         break;
0713     case IW_AUTH_DROP_UNENCRYPTED:
0714         ieee->drop_unencrypted = data->value;
0715         break;
0716
0717     case IW_AUTH_80211_AUTH_ALG:
0718         if (data->value & IW_AUTH_ALG_SHARED_KEY) {
0719             ieee->open_wep = 0;
0720             ieee->auth_mode = 1;
0721         } else if (data->value & IW_AUTH_ALG_OPEN_SYSTEM) {
0722             ieee->open_wep = 1;
0723             ieee->auth_mode = 0;
0724         } else if (data->value & IW_AUTH_ALG_LEAP) {
0725             ieee->open_wep = 1;
0726             ieee->auth_mode = 2;
0727         } else {
0728             return -EINVAL;
0729         }
0730         break;
0731
0732     case IW_AUTH_WPA_ENABLED:
0733         ieee->wpa_enabled = (data->value) ? 1 : 0;
0734         break;
0735
0736     case IW_AUTH_RX_UNENCRYPTED_EAPOL:
0737         ieee->ieee802_1x = data->value;
0738         break;
0739     case IW_AUTH_PRIVACY_INVOKED:
0740         ieee->privacy_invoked = data->value;
0741         break;
0742     default:
0743         return -EOPNOTSUPP;
0744     }
0745     return 0;
0746 }
0747 EXPORT_SYMBOL(rtllib_wx_set_auth);
0748
0749 int rtllib_wx_set_gen_ie(struct rtllib_device *ieee, u8 *ie, size_t len)
0750 {
0751     u8 *buf;
0752     u8 eid, wps_oui[4] = {0x0, 0x50, 0xf2, 0x04};
0753
0754     if (len > MAX_WPA_IE_LEN || (len && !ie))
0755         return -EINVAL;
0756
0757     if (len) {
0758         eid = ie[0];
0759         if ((eid == MFIE_TYPE_GENERIC) && (!memcmp(&ie[2], wps_oui, 4))) {
0760             ieee->wps_ie_len = min_t(size_t, len, MAX_WZC_IE_LEN);
0761             buf = kmemdup(ie, ieee->wps_ie_len, GFP_KERNEL);
0762             if (!buf)
0763                 return -ENOMEM;
0764             ieee->wps_ie = buf;
0765             return 0;
0766         }
0767     }
0768     ieee->wps_ie_len = 0;
0769     kfree(ieee->wps_ie);
0770     ieee->wps_ie = NULL;
0771     if (len) {
0772         if (len != ie[1] + 2)
0773             return -EINVAL;
0774         buf = kmemdup(ie, len, GFP_KERNEL);
0775         if (!buf)
0776             return -ENOMEM;
0777         kfree(ieee->wpa_ie);
0778         ieee->wpa_ie = buf;
0779         ieee->wpa_ie_len = len;
0780     } else {
0781         kfree(ieee->wpa_ie);
0782         ieee->wpa_ie = NULL;
0783         ieee->wpa_ie_len = 0;
0784     }
0785     return 0;
0786 }
0787 EXPORT_SYMBOL(rtllib_wx_set_gen_ie);