| /****************************************************************************** |
| |
| Copyright(c) 2004 Intel Corporation. All rights reserved. |
| |
| Portions of this file are based on the WEP enablement code provided by the |
| Host AP project hostap-drivers v0.1.3 |
| Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen |
| <jkmaline@cc.hut.fi> |
| Copyright (c) 2002-2003, Jouni Malinen <jkmaline@cc.hut.fi> |
| |
| This program is free software; you can redistribute it and/or modify it |
| under the terms of version 2 of the GNU General Public License as |
| published by the Free Software Foundation. |
| |
| This program is distributed in the hope that it will be useful, but WITHOUT |
| ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
| more details. |
| |
| You should have received a copy of the GNU General Public License along with |
| this program; if not, write to the Free Software Foundation, Inc., 59 |
| Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| |
| The full GNU General Public License is included in this distribution in the |
| file called LICENSE. |
| |
| Contact Information: |
| James P. Ketrenos <ipw2100-admin@linux.intel.com> |
| Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 |
| |
| ******************************************************************************/ |
| |
| #include <linux/kmod.h> |
| #include <linux/module.h> |
| |
| #include <net/ieee80211.h> |
| #include <linux/wireless.h> |
| |
| static const char *ieee80211_modes[] = { |
| "?", "a", "b", "ab", "g", "ag", "bg", "abg" |
| }; |
| |
| #define MAX_CUSTOM_LEN 64 |
| static inline char *ipw2100_translate_scan(struct ieee80211_device *ieee, |
| char *start, char *stop, |
| struct ieee80211_network *network) |
| { |
| char custom[MAX_CUSTOM_LEN]; |
| char *p; |
| struct iw_event iwe; |
| int i, j; |
| u8 max_rate, rate; |
| |
| /* First entry *MUST* be the AP MAC address */ |
| iwe.cmd = SIOCGIWAP; |
| iwe.u.ap_addr.sa_family = ARPHRD_ETHER; |
| memcpy(iwe.u.ap_addr.sa_data, network->bssid, ETH_ALEN); |
| start = iwe_stream_add_event(start, stop, &iwe, IW_EV_ADDR_LEN); |
| |
| /* Remaining entries will be displayed in the order we provide them */ |
| |
| /* Add the ESSID */ |
| iwe.cmd = SIOCGIWESSID; |
| iwe.u.data.flags = 1; |
| if (network->flags & NETWORK_EMPTY_ESSID) { |
| iwe.u.data.length = sizeof("<hidden>"); |
| start = iwe_stream_add_point(start, stop, &iwe, "<hidden>"); |
| } else { |
| iwe.u.data.length = min(network->ssid_len, (u8)32); |
| start = iwe_stream_add_point(start, stop, &iwe, network->ssid); |
| } |
| |
| /* Add the protocol name */ |
| iwe.cmd = SIOCGIWNAME; |
| snprintf(iwe.u.name, IFNAMSIZ, "IEEE 802.11%s", ieee80211_modes[network->mode]); |
| start = iwe_stream_add_event(start, stop, &iwe, IW_EV_CHAR_LEN); |
| |
| /* Add mode */ |
| iwe.cmd = SIOCGIWMODE; |
| if (network->capability & |
| (WLAN_CAPABILITY_ESS | WLAN_CAPABILITY_IBSS)) { |
| if (network->capability & WLAN_CAPABILITY_ESS) |
| iwe.u.mode = IW_MODE_MASTER; |
| else |
| iwe.u.mode = IW_MODE_ADHOC; |
| |
| start = iwe_stream_add_event(start, stop, &iwe, |
| IW_EV_UINT_LEN); |
| } |
| |
| /* Add frequency/channel */ |
| iwe.cmd = SIOCGIWFREQ; |
| /* iwe.u.freq.m = ieee80211_frequency(network->channel, network->mode); |
| iwe.u.freq.e = 3; */ |
| iwe.u.freq.m = network->channel; |
| iwe.u.freq.e = 0; |
| iwe.u.freq.i = 0; |
| start = iwe_stream_add_event(start, stop, &iwe, IW_EV_FREQ_LEN); |
| |
| /* Add encryption capability */ |
| iwe.cmd = SIOCGIWENCODE; |
| if (network->capability & WLAN_CAPABILITY_PRIVACY) |
| iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY; |
| else |
| iwe.u.data.flags = IW_ENCODE_DISABLED; |
| iwe.u.data.length = 0; |
| start = iwe_stream_add_point(start, stop, &iwe, network->ssid); |
| |
| /* Add basic and extended rates */ |
| max_rate = 0; |
| p = custom; |
| p += snprintf(p, MAX_CUSTOM_LEN - (p - custom), " Rates (Mb/s): "); |
| for (i = 0, j = 0; i < network->rates_len; ) { |
| if (j < network->rates_ex_len && |
| ((network->rates_ex[j] & 0x7F) < |
| (network->rates[i] & 0x7F))) |
| rate = network->rates_ex[j++] & 0x7F; |
| else |
| rate = network->rates[i++] & 0x7F; |
| if (rate > max_rate) |
| max_rate = rate; |
| p += snprintf(p, MAX_CUSTOM_LEN - (p - custom), |
| "%d%s ", rate >> 1, (rate & 1) ? ".5" : ""); |
| } |
| for (; j < network->rates_ex_len; j++) { |
| rate = network->rates_ex[j] & 0x7F; |
| p += snprintf(p, MAX_CUSTOM_LEN - (p - custom), |
| "%d%s ", rate >> 1, (rate & 1) ? ".5" : ""); |
| if (rate > max_rate) |
| max_rate = rate; |
| } |
| |
| iwe.cmd = SIOCGIWRATE; |
| iwe.u.bitrate.fixed = iwe.u.bitrate.disabled = 0; |
| iwe.u.bitrate.value = max_rate * 500000; |
| start = iwe_stream_add_event(start, stop, &iwe, |
| IW_EV_PARAM_LEN); |
| |
| iwe.cmd = IWEVCUSTOM; |
| iwe.u.data.length = p - custom; |
| if (iwe.u.data.length) |
| start = iwe_stream_add_point(start, stop, &iwe, custom); |
| |
| /* Add quality statistics */ |
| /* TODO: Fix these values... */ |
| iwe.cmd = IWEVQUAL; |
| iwe.u.qual.qual = network->stats.signal; |
| iwe.u.qual.level = network->stats.rssi; |
| iwe.u.qual.noise = network->stats.noise; |
| iwe.u.qual.updated = network->stats.mask & IEEE80211_STATMASK_WEMASK; |
| if (!(network->stats.mask & IEEE80211_STATMASK_RSSI)) |
| iwe.u.qual.updated |= IW_QUAL_LEVEL_INVALID; |
| if (!(network->stats.mask & IEEE80211_STATMASK_NOISE)) |
| iwe.u.qual.updated |= IW_QUAL_NOISE_INVALID; |
| if (!(network->stats.mask & IEEE80211_STATMASK_SIGNAL)) |
| iwe.u.qual.updated |= IW_QUAL_QUAL_INVALID; |
| |
| start = iwe_stream_add_event(start, stop, &iwe, IW_EV_QUAL_LEN); |
| |
| iwe.cmd = IWEVCUSTOM; |
| p = custom; |
| |
| iwe.u.data.length = p - custom; |
| if (iwe.u.data.length) |
| start = iwe_stream_add_point(start, stop, &iwe, custom); |
| |
| if (ieee->wpa_enabled && network->wpa_ie_len){ |
| char buf[MAX_WPA_IE_LEN * 2 + 30]; |
| |
| u8 *p = buf; |
| p += sprintf(p, "wpa_ie="); |
| for (i = 0; i < network->wpa_ie_len; i++) { |
| p += sprintf(p, "%02x", network->wpa_ie[i]); |
| } |
| |
| memset(&iwe, 0, sizeof(iwe)); |
| iwe.cmd = IWEVCUSTOM; |
| iwe.u.data.length = strlen(buf); |
| start = iwe_stream_add_point(start, stop, &iwe, buf); |
| } |
| |
| if (ieee->wpa_enabled && network->rsn_ie_len){ |
| char buf[MAX_WPA_IE_LEN * 2 + 30]; |
| |
| u8 *p = buf; |
| p += sprintf(p, "rsn_ie="); |
| for (i = 0; i < network->rsn_ie_len; i++) { |
| p += sprintf(p, "%02x", network->rsn_ie[i]); |
| } |
| |
| memset(&iwe, 0, sizeof(iwe)); |
| iwe.cmd = IWEVCUSTOM; |
| iwe.u.data.length = strlen(buf); |
| start = iwe_stream_add_point(start, stop, &iwe, buf); |
| } |
| |
| /* Add EXTRA: Age to display seconds since last beacon/probe response |
| * for given network. */ |
| iwe.cmd = IWEVCUSTOM; |
| p = custom; |
| p += snprintf(p, MAX_CUSTOM_LEN - (p - custom), |
| " Last beacon: %lums ago", (jiffies - network->last_scanned) / (HZ / 100)); |
| iwe.u.data.length = p - custom; |
| if (iwe.u.data.length) |
| start = iwe_stream_add_point(start, stop, &iwe, custom); |
| |
| |
| return start; |
| } |
| |
| int ieee80211_wx_get_scan(struct ieee80211_device *ieee, |
| struct iw_request_info *info, |
| union iwreq_data *wrqu, char *extra) |
| { |
| struct ieee80211_network *network; |
| unsigned long flags; |
| |
| char *ev = extra; |
| char *stop = ev + IW_SCAN_MAX_DATA; |
| int i = 0; |
| |
| IEEE80211_DEBUG_WX("Getting scan\n"); |
| |
| spin_lock_irqsave(&ieee->lock, flags); |
| |
| list_for_each_entry(network, &ieee->network_list, list) { |
| i++; |
| if (ieee->scan_age == 0 || |
| time_after(network->last_scanned + ieee->scan_age, jiffies)) |
| ev = ipw2100_translate_scan(ieee, ev, stop, network); |
| else |
| IEEE80211_DEBUG_SCAN( |
| "Not showing network '%s (" |
| MAC_FMT ")' due to age (%lums).\n", |
| escape_essid(network->ssid, |
| network->ssid_len), |
| MAC_ARG(network->bssid), |
| (jiffies - network->last_scanned) / (HZ / 100)); |
| } |
| |
| spin_unlock_irqrestore(&ieee->lock, flags); |
| |
| wrqu->data.length = ev - extra; |
| wrqu->data.flags = 0; |
| |
| IEEE80211_DEBUG_WX("exit: %d networks returned.\n", i); |
| |
| return 0; |
| } |
| |
| int ieee80211_wx_set_encode(struct ieee80211_device *ieee, |
| struct iw_request_info *info, |
| union iwreq_data *wrqu, char *keybuf) |
| { |
| struct iw_point *erq = &(wrqu->encoding); |
| struct net_device *dev = ieee->dev; |
| struct ieee80211_security sec = { |
| .flags = 0 |
| }; |
| int i, key, key_provided, len; |
| struct ieee80211_crypt_data **crypt; |
| |
| IEEE80211_DEBUG_WX("SET_ENCODE\n"); |
| |
| key = erq->flags & IW_ENCODE_INDEX; |
| if (key) { |
| if (key > WEP_KEYS) |
| return -EINVAL; |
| key--; |
| key_provided = 1; |
| } else { |
| key_provided = 0; |
| key = ieee->tx_keyidx; |
| } |
| |
| IEEE80211_DEBUG_WX("Key: %d [%s]\n", key, key_provided ? |
| "provided" : "default"); |
| |
| crypt = &ieee->crypt[key]; |
| |
| if (erq->flags & IW_ENCODE_DISABLED) { |
| if (key_provided && *crypt) { |
| IEEE80211_DEBUG_WX("Disabling encryption on key %d.\n", |
| key); |
| ieee80211_crypt_delayed_deinit(ieee, crypt); |
| } else |
| IEEE80211_DEBUG_WX("Disabling encryption.\n"); |
| |
| /* Check all the keys to see if any are still configured, |
| * and if no key index was provided, de-init them all */ |
| for (i = 0; i < WEP_KEYS; i++) { |
| if (ieee->crypt[i] != NULL) { |
| if (key_provided) |
| break; |
| ieee80211_crypt_delayed_deinit( |
| ieee, &ieee->crypt[i]); |
| } |
| } |
| |
| if (i == WEP_KEYS) { |
| sec.enabled = 0; |
| sec.level = SEC_LEVEL_0; |
| sec.flags |= SEC_ENABLED | SEC_LEVEL; |
| } |
| |
| goto done; |
| } |
| |
| |
| |
| sec.enabled = 1; |
| sec.flags |= SEC_ENABLED; |
| |
| if (*crypt != NULL && (*crypt)->ops != NULL && |
| strcmp((*crypt)->ops->name, "WEP") != 0) { |
| /* changing to use WEP; deinit previously used algorithm |
| * on this key */ |
| ieee80211_crypt_delayed_deinit(ieee, crypt); |
| } |
| |
| if (*crypt == NULL) { |
| struct ieee80211_crypt_data *new_crypt; |
| |
| /* take WEP into use */ |
| new_crypt = kmalloc(sizeof(struct ieee80211_crypt_data), |
| GFP_KERNEL); |
| if (new_crypt == NULL) |
| return -ENOMEM; |
| memset(new_crypt, 0, sizeof(struct ieee80211_crypt_data)); |
| new_crypt->ops = ieee80211_get_crypto_ops("WEP"); |
| if (!new_crypt->ops) { |
| request_module("ieee80211_crypt_wep"); |
| new_crypt->ops = ieee80211_get_crypto_ops("WEP"); |
| } |
| |
| if (new_crypt->ops && try_module_get(new_crypt->ops->owner)) |
| new_crypt->priv = new_crypt->ops->init(key); |
| |
| if (!new_crypt->ops || !new_crypt->priv) { |
| kfree(new_crypt); |
| new_crypt = NULL; |
| |
| printk(KERN_WARNING "%s: could not initialize WEP: " |
| "load module ieee80211_crypt_wep\n", |
| dev->name); |
| return -EOPNOTSUPP; |
| } |
| *crypt = new_crypt; |
| } |
| |
| /* If a new key was provided, set it up */ |
| if (erq->length > 0) { |
| len = erq->length <= 5 ? 5 : 13; |
| memcpy(sec.keys[key], keybuf, erq->length); |
| if (len > erq->length) |
| memset(sec.keys[key] + erq->length, 0, |
| len - erq->length); |
| IEEE80211_DEBUG_WX("Setting key %d to '%s' (%d:%d bytes)\n", |
| key, escape_essid(sec.keys[key], len), |
| erq->length, len); |
| sec.key_sizes[key] = len; |
| (*crypt)->ops->set_key(sec.keys[key], len, NULL, |
| (*crypt)->priv); |
| sec.flags |= (1 << key); |
| /* This ensures a key will be activated if no key is |
| * explicitely set */ |
| if (key == sec.active_key) |
| sec.flags |= SEC_ACTIVE_KEY; |
| } else { |
| len = (*crypt)->ops->get_key(sec.keys[key], WEP_KEY_LEN, |
| NULL, (*crypt)->priv); |
| if (len == 0) { |
| /* Set a default key of all 0 */ |
| IEEE80211_DEBUG_WX("Setting key %d to all zero.\n", |
| key); |
| memset(sec.keys[key], 0, 13); |
| (*crypt)->ops->set_key(sec.keys[key], 13, NULL, |
| (*crypt)->priv); |
| sec.key_sizes[key] = 13; |
| sec.flags |= (1 << key); |
| } |
| |
| /* No key data - just set the default TX key index */ |
| if (key_provided) { |
| IEEE80211_DEBUG_WX( |
| "Setting key %d to default Tx key.\n", key); |
| ieee->tx_keyidx = key; |
| sec.active_key = key; |
| sec.flags |= SEC_ACTIVE_KEY; |
| } |
| } |
| |
| done: |
| ieee->open_wep = !(erq->flags & IW_ENCODE_RESTRICTED); |
| sec.auth_mode = ieee->open_wep ? WLAN_AUTH_OPEN : WLAN_AUTH_SHARED_KEY; |
| sec.flags |= SEC_AUTH_MODE; |
| IEEE80211_DEBUG_WX("Auth: %s\n", sec.auth_mode == WLAN_AUTH_OPEN ? |
| "OPEN" : "SHARED KEY"); |
| |
| /* For now we just support WEP, so only set that security level... |
| * TODO: When WPA is added this is one place that needs to change */ |
| sec.flags |= SEC_LEVEL; |
| sec.level = SEC_LEVEL_1; /* 40 and 104 bit WEP */ |
| |
| if (ieee->set_security) |
| ieee->set_security(dev, &sec); |
| |
| /* Do not reset port if card is in Managed mode since resetting will |
| * generate new IEEE 802.11 authentication which may end up in looping |
| * with IEEE 802.1X. If your hardware requires a reset after WEP |
| * configuration (for example... Prism2), implement the reset_port in |
| * the callbacks structures used to initialize the 802.11 stack. */ |
| if (ieee->reset_on_keychange && |
| ieee->iw_mode != IW_MODE_INFRA && |
| ieee->reset_port && ieee->reset_port(dev)) { |
| printk(KERN_DEBUG "%s: reset_port failed\n", dev->name); |
| return -EINVAL; |
| } |
| return 0; |
| } |
| |
| int ieee80211_wx_get_encode(struct ieee80211_device *ieee, |
| struct iw_request_info *info, |
| union iwreq_data *wrqu, char *keybuf) |
| { |
| struct iw_point *erq = &(wrqu->encoding); |
| int len, key; |
| struct ieee80211_crypt_data *crypt; |
| |
| IEEE80211_DEBUG_WX("GET_ENCODE\n"); |
| |
| key = erq->flags & IW_ENCODE_INDEX; |
| if (key) { |
| if (key > WEP_KEYS) |
| return -EINVAL; |
| key--; |
| } else |
| key = ieee->tx_keyidx; |
| |
| crypt = ieee->crypt[key]; |
| erq->flags = key + 1; |
| |
| if (crypt == NULL || crypt->ops == NULL) { |
| erq->length = 0; |
| erq->flags |= IW_ENCODE_DISABLED; |
| return 0; |
| } |
| |
| if (strcmp(crypt->ops->name, "WEP") != 0) { |
| /* only WEP is supported with wireless extensions, so just |
| * report that encryption is used */ |
| erq->length = 0; |
| erq->flags |= IW_ENCODE_ENABLED; |
| return 0; |
| } |
| |
| len = crypt->ops->get_key(keybuf, WEP_KEY_LEN, NULL, crypt->priv); |
| erq->length = (len >= 0 ? len : 0); |
| |
| erq->flags |= IW_ENCODE_ENABLED; |
| |
| if (ieee->open_wep) |
| erq->flags |= IW_ENCODE_OPEN; |
| else |
| erq->flags |= IW_ENCODE_RESTRICTED; |
| |
| return 0; |
| } |
| |
| EXPORT_SYMBOL(ieee80211_wx_get_scan); |
| EXPORT_SYMBOL(ieee80211_wx_set_encode); |
| EXPORT_SYMBOL(ieee80211_wx_get_encode); |