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kernel-ark/drivers/net/wireless/ipw2x00/libipw_wx.c
Dan Williams c3d72b9681 ipw2x00: age scan results on resume 
Scanned BSS entries are timestamped with jiffies, which doesn't
increment across suspend and hibernate.  On resume, every BSS in the
scan list looks like it was scanned within the last 10 seconds,
irregardless of how long the machine was actually asleep.  Age scan
results on resume with the time spent during sleep so userspace has a
clue how old they really are.

Signed-off-by: Dan Williams <dcbw@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-02-27 14:52:43 -05:00

772 lines
21 KiB
C
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/******************************************************************************
Copyright(c) 2004-2005 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
<j@w1.fi>
Copyright (c) 2002-2003, Jouni Malinen <j@w1.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 <linux/jiffies.h>
#include <net/lib80211.h>
#include <linux/wireless.h>
#include "ieee80211.h"
static const char *ieee80211_modes[] = {
"?", "a", "b", "ab", "g", "ag", "bg", "abg"
};
static inline unsigned int elapsed_jiffies_msecs(unsigned long start)
{
unsigned long end = jiffies;
if (end >= start)
return jiffies_to_msecs(end - start);
return jiffies_to_msecs(end + (MAX_JIFFY_OFFSET - start) + 1);
}
#define MAX_CUSTOM_LEN 64
static char *ieee80211_translate_scan(struct ieee80211_device *ieee,
char *start, char *stop,
struct ieee80211_network *network,
struct iw_request_info *info)
{
char custom[MAX_CUSTOM_LEN];
char *p;
struct iw_event iwe;
int i, j;
char *current_val; /* For rates */
u8 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(info, 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;
iwe.u.data.length = min(network->ssid_len, (u8) 32);
start = iwe_stream_add_point(info, 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(info, 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(info, start, stop,
&iwe, IW_EV_UINT_LEN);
}
/* Add channel and frequency */
/* Note : userspace automatically computes channel using iwrange */
iwe.cmd = SIOCGIWFREQ;
iwe.u.freq.m = ieee80211_channel_to_freq(ieee, network->channel);
iwe.u.freq.e = 6;
iwe.u.freq.i = 0;
start = iwe_stream_add_event(info, 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(info, start, stop,
&iwe, network->ssid);
/* Add basic and extended rates */
/* Rate : stuffing multiple values in a single event require a bit
* more of magic - Jean II */
current_val = start + iwe_stream_lcp_len(info);
iwe.cmd = SIOCGIWRATE;
/* Those two flags are ignored... */
iwe.u.bitrate.fixed = iwe.u.bitrate.disabled = 0;
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;
/* Bit rate given in 500 kb/s units (+ 0x80) */
iwe.u.bitrate.value = ((rate & 0x7f) * 500000);
/* Add new value to event */
current_val = iwe_stream_add_value(info, start, current_val,
stop, &iwe, IW_EV_PARAM_LEN);
}
for (; j < network->rates_ex_len; j++) {
rate = network->rates_ex[j] & 0x7F;
/* Bit rate given in 500 kb/s units (+ 0x80) */
iwe.u.bitrate.value = ((rate & 0x7f) * 500000);
/* Add new value to event */
current_val = iwe_stream_add_value(info, start, current_val,
stop, &iwe, IW_EV_PARAM_LEN);
}
/* Check if we added any rate */
if ((current_val - start) > iwe_stream_lcp_len(info))
start = current_val;
/* Add quality statistics */
iwe.cmd = IWEVQUAL;
iwe.u.qual.updated = IW_QUAL_QUAL_UPDATED | IW_QUAL_LEVEL_UPDATED |
IW_QUAL_NOISE_UPDATED;
if (!(network->stats.mask & IEEE80211_STATMASK_RSSI)) {
iwe.u.qual.updated |= IW_QUAL_QUAL_INVALID |
IW_QUAL_LEVEL_INVALID;
iwe.u.qual.qual = 0;
} else {
if (ieee->perfect_rssi == ieee->worst_rssi)
iwe.u.qual.qual = 100;
else
iwe.u.qual.qual =
(100 *
(ieee->perfect_rssi - ieee->worst_rssi) *
(ieee->perfect_rssi - ieee->worst_rssi) -
(ieee->perfect_rssi - network->stats.rssi) *
(15 * (ieee->perfect_rssi - ieee->worst_rssi) +
62 * (ieee->perfect_rssi -
network->stats.rssi))) /
((ieee->perfect_rssi -
ieee->worst_rssi) * (ieee->perfect_rssi -
ieee->worst_rssi));
if (iwe.u.qual.qual > 100)
iwe.u.qual.qual = 100;
else if (iwe.u.qual.qual < 1)
iwe.u.qual.qual = 0;
}
if (!(network->stats.mask & IEEE80211_STATMASK_NOISE)) {
iwe.u.qual.updated |= IW_QUAL_NOISE_INVALID;
iwe.u.qual.noise = 0;
} else {
iwe.u.qual.noise = network->stats.noise;
}
if (!(network->stats.mask & IEEE80211_STATMASK_SIGNAL)) {
iwe.u.qual.updated |= IW_QUAL_LEVEL_INVALID;
iwe.u.qual.level = 0;
} else {
iwe.u.qual.level = network->stats.signal;
}
start = iwe_stream_add_event(info, 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(info, start, stop, &iwe, custom);
memset(&iwe, 0, sizeof(iwe));
if (network->wpa_ie_len) {
char buf[MAX_WPA_IE_LEN];
memcpy(buf, network->wpa_ie, network->wpa_ie_len);
iwe.cmd = IWEVGENIE;
iwe.u.data.length = network->wpa_ie_len;
start = iwe_stream_add_point(info, start, stop, &iwe, buf);
}
memset(&iwe, 0, sizeof(iwe));
if (network->rsn_ie_len) {
char buf[MAX_WPA_IE_LEN];
memcpy(buf, network->rsn_ie, network->rsn_ie_len);
iwe.cmd = IWEVGENIE;
iwe.u.data.length = network->rsn_ie_len;
start = iwe_stream_add_point(info, 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: %ums ago",
elapsed_jiffies_msecs(network->last_scanned));
iwe.u.data.length = p - custom;
if (iwe.u.data.length)
start = iwe_stream_add_point(info, start, stop, &iwe, custom);
/* Add spectrum management information */
iwe.cmd = -1;
p = custom;
p += snprintf(p, MAX_CUSTOM_LEN - (p - custom), " Channel flags: ");
if (ieee80211_get_channel_flags(ieee, network->channel) &
IEEE80211_CH_INVALID) {
iwe.cmd = IWEVCUSTOM;
p += snprintf(p, MAX_CUSTOM_LEN - (p - custom), "INVALID ");
}
if (ieee80211_get_channel_flags(ieee, network->channel) &
IEEE80211_CH_RADAR_DETECT) {
iwe.cmd = IWEVCUSTOM;
p += snprintf(p, MAX_CUSTOM_LEN - (p - custom), "DFS ");
}
if (iwe.cmd == IWEVCUSTOM) {
iwe.u.data.length = p - custom;
start = iwe_stream_add_point(info, start, stop, &iwe, custom);
}
return start;
}
#define SCAN_ITEM_SIZE 128
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;
int err = 0;
char *ev = extra;
char *stop = ev + wrqu->data.length;
int i = 0;
DECLARE_SSID_BUF(ssid);
IEEE80211_DEBUG_WX("Getting scan\n");
spin_lock_irqsave(&ieee->lock, flags);
list_for_each_entry(network, &ieee->network_list, list) {
i++;
if (stop - ev < SCAN_ITEM_SIZE) {
err = -E2BIG;
break;
}
if (ieee->scan_age == 0 ||
time_after(network->last_scanned + ieee->scan_age, jiffies))
ev = ieee80211_translate_scan(ieee, ev, stop, network,
info);
else {
IEEE80211_DEBUG_SCAN("Not showing network '%s ("
"%pM)' due to age (%ums).\n",
print_ssid(ssid, network->ssid,
network->ssid_len),
network->bssid,
elapsed_jiffies_msecs(
network->last_scanned));
}
}
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 err;
}
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 lib80211_crypt_data **crypt;
int host_crypto = ieee->host_encrypt || ieee->host_decrypt || ieee->host_build_iv;
DECLARE_SSID_BUF(ssid);
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->crypt_info.tx_keyidx;
}
IEEE80211_DEBUG_WX("Key: %d [%s]\n", key, key_provided ?
"provided" : "default");
crypt = &ieee->crypt_info.crypt[key];
if (erq->flags & IW_ENCODE_DISABLED) {
if (key_provided && *crypt) {
IEEE80211_DEBUG_WX("Disabling encryption on key %d.\n",
key);
lib80211_crypt_delayed_deinit(&ieee->crypt_info, 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_info.crypt[i] != NULL) {
if (key_provided)
break;
lib80211_crypt_delayed_deinit(&ieee->crypt_info,
&ieee->crypt_info.crypt[i]);
}
}
if (i == WEP_KEYS) {
sec.enabled = 0;
sec.encrypt = 0;
sec.level = SEC_LEVEL_0;
sec.flags |= SEC_ENABLED | SEC_LEVEL | SEC_ENCRYPT;
}
goto done;
}
sec.enabled = 1;
sec.encrypt = 1;
sec.flags |= SEC_ENABLED | SEC_ENCRYPT;
if (*crypt != NULL && (*crypt)->ops != NULL &&
strcmp((*crypt)->ops->name, "WEP") != 0) {
/* changing to use WEP; deinit previously used algorithm
* on this key */
lib80211_crypt_delayed_deinit(&ieee->crypt_info, crypt);
}
if (*crypt == NULL && host_crypto) {
struct lib80211_crypt_data *new_crypt;
/* take WEP into use */
new_crypt = kzalloc(sizeof(struct lib80211_crypt_data),
GFP_KERNEL);
if (new_crypt == NULL)
return -ENOMEM;
new_crypt->ops = lib80211_get_crypto_ops("WEP");
if (!new_crypt->ops) {
request_module("lib80211_crypt_wep");
new_crypt->ops = lib80211_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 lib80211_crypt_wep\n", dev->name);
return -EOPNOTSUPP;
}
*crypt = new_crypt;
}
/* If a new key was provided, set it up */
if (erq->length > 0) {
#ifdef CONFIG_IEEE80211_DEBUG
DECLARE_SSID_BUF(ssid);
#endif
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, print_ssid(ssid, sec.keys[key], len),
erq->length, len);
sec.key_sizes[key] = len;
if (*crypt)
(*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
* explicitly set */
if (key == sec.active_key)
sec.flags |= SEC_ACTIVE_KEY;
} else {
if (host_crypto) {
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->crypt_info.tx_keyidx = key;
sec.active_key = key;
sec.flags |= SEC_ACTIVE_KEY;
}
}
if (erq->flags & (IW_ENCODE_OPEN | IW_ENCODE_RESTRICTED)) {
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 */
sec.encode_alg[key] = SEC_ALG_WEP;
done:
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 lib80211_crypt_data *crypt;
struct ieee80211_security *sec = &ieee->sec;
IEEE80211_DEBUG_WX("GET_ENCODE\n");
key = erq->flags & IW_ENCODE_INDEX;
if (key) {
if (key > WEP_KEYS)
return -EINVAL;
key--;
} else
key = ieee->crypt_info.tx_keyidx;
crypt = ieee->crypt_info.crypt[key];
erq->flags = key + 1;
if (!sec->enabled) {
erq->length = 0;
erq->flags |= IW_ENCODE_DISABLED;
return 0;
}
len = sec->key_sizes[key];
memcpy(keybuf, sec->keys[key], len);
erq->length = len;
erq->flags |= IW_ENCODE_ENABLED;
if (ieee->open_wep)
erq->flags |= IW_ENCODE_OPEN;
else
erq->flags |= IW_ENCODE_RESTRICTED;
return 0;
}
int ieee80211_wx_set_encodeext(struct ieee80211_device *ieee,
struct iw_request_info *info,
union iwreq_data *wrqu, char *extra)
{
struct net_device *dev = ieee->dev;
struct iw_point *encoding = &wrqu->encoding;
struct iw_encode_ext *ext = (struct iw_encode_ext *)extra;
int i, idx, ret = 0;
int group_key = 0;
const char *alg, *module;
struct lib80211_crypto_ops *ops;
struct lib80211_crypt_data **crypt;
struct ieee80211_security sec = {
.flags = 0,
};
idx = encoding->flags & IW_ENCODE_INDEX;
if (idx) {
if (idx < 1 || idx > WEP_KEYS)
return -EINVAL;
idx--;
} else
idx = ieee->crypt_info.tx_keyidx;
if (ext->ext_flags & IW_ENCODE_EXT_GROUP_KEY) {
crypt = &ieee->crypt_info.crypt[idx];
group_key = 1;
} else {
/* some Cisco APs use idx>0 for unicast in dynamic WEP */
if (idx != 0 && ext->alg != IW_ENCODE_ALG_WEP)
return -EINVAL;
if (ieee->iw_mode == IW_MODE_INFRA)
crypt = &ieee->crypt_info.crypt[idx];
else
return -EINVAL;
}
sec.flags |= SEC_ENABLED | SEC_ENCRYPT;
if ((encoding->flags & IW_ENCODE_DISABLED) ||
ext->alg == IW_ENCODE_ALG_NONE) {
if (*crypt)
lib80211_crypt_delayed_deinit(&ieee->crypt_info, crypt);
for (i = 0; i < WEP_KEYS; i++)
if (ieee->crypt_info.crypt[i] != NULL)
break;
if (i == WEP_KEYS) {
sec.enabled = 0;
sec.encrypt = 0;
sec.level = SEC_LEVEL_0;
sec.flags |= SEC_LEVEL;
}
goto done;
}
sec.enabled = 1;
sec.encrypt = 1;
if (group_key ? !ieee->host_mc_decrypt :
!(ieee->host_encrypt || ieee->host_decrypt ||
ieee->host_encrypt_msdu))
goto skip_host_crypt;
switch (ext->alg) {
case IW_ENCODE_ALG_WEP:
alg = "WEP";
module = "lib80211_crypt_wep";
break;
case IW_ENCODE_ALG_TKIP:
alg = "TKIP";
module = "lib80211_crypt_tkip";
break;
case IW_ENCODE_ALG_CCMP:
alg = "CCMP";
module = "lib80211_crypt_ccmp";
break;
default:
IEEE80211_DEBUG_WX("%s: unknown crypto alg %d\n",
dev->name, ext->alg);
ret = -EINVAL;
goto done;
}
ops = lib80211_get_crypto_ops(alg);
if (ops == NULL) {
request_module(module);
ops = lib80211_get_crypto_ops(alg);
}
if (ops == NULL) {
IEEE80211_DEBUG_WX("%s: unknown crypto alg %d\n",
dev->name, ext->alg);
ret = -EINVAL;
goto done;
}
if (*crypt == NULL || (*crypt)->ops != ops) {
struct lib80211_crypt_data *new_crypt;
lib80211_crypt_delayed_deinit(&ieee->crypt_info, crypt);
new_crypt = kzalloc(sizeof(*new_crypt), GFP_KERNEL);
if (new_crypt == NULL) {
ret = -ENOMEM;
goto done;
}
new_crypt->ops = ops;
if (new_crypt->ops && try_module_get(new_crypt->ops->owner))
new_crypt->priv = new_crypt->ops->init(idx);
if (new_crypt->priv == NULL) {
kfree(new_crypt);
ret = -EINVAL;
goto done;
}
*crypt = new_crypt;
}
if (ext->key_len > 0 && (*crypt)->ops->set_key &&
(*crypt)->ops->set_key(ext->key, ext->key_len, ext->rx_seq,
(*crypt)->priv) < 0) {
IEEE80211_DEBUG_WX("%s: key setting failed\n", dev->name);
ret = -EINVAL;
goto done;
}
skip_host_crypt:
if (ext->ext_flags & IW_ENCODE_EXT_SET_TX_KEY) {
ieee->crypt_info.tx_keyidx = idx;
sec.active_key = idx;
sec.flags |= SEC_ACTIVE_KEY;
}
if (ext->alg != IW_ENCODE_ALG_NONE) {
memcpy(sec.keys[idx], ext->key, ext->key_len);
sec.key_sizes[idx] = ext->key_len;
sec.flags |= (1 << idx);
if (ext->alg == IW_ENCODE_ALG_WEP) {
sec.encode_alg[idx] = SEC_ALG_WEP;
sec.flags |= SEC_LEVEL;
sec.level = SEC_LEVEL_1;
} else if (ext->alg == IW_ENCODE_ALG_TKIP) {
sec.encode_alg[idx] = SEC_ALG_TKIP;
sec.flags |= SEC_LEVEL;
sec.level = SEC_LEVEL_2;
} else if (ext->alg == IW_ENCODE_ALG_CCMP) {
sec.encode_alg[idx] = SEC_ALG_CCMP;
sec.flags |= SEC_LEVEL;
sec.level = SEC_LEVEL_3;
}
/* Don't set sec level for group keys. */
if (group_key)
sec.flags &= ~SEC_LEVEL;
}
done:
if (ieee->set_security)
ieee->set_security(ieee->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)) {
IEEE80211_DEBUG_WX("%s: reset_port failed\n", dev->name);
return -EINVAL;
}
return ret;
}
int ieee80211_wx_get_encodeext(struct ieee80211_device *ieee,
struct iw_request_info *info,
union iwreq_data *wrqu, char *extra)
{
struct iw_point *encoding = &wrqu->encoding;
struct iw_encode_ext *ext = (struct iw_encode_ext *)extra;
struct ieee80211_security *sec = &ieee->sec;
int idx, max_key_len;
max_key_len = encoding->length - sizeof(*ext);
if (max_key_len < 0)
return -EINVAL;
idx = encoding->flags & IW_ENCODE_INDEX;
if (idx) {
if (idx < 1 || idx > WEP_KEYS)
return -EINVAL;
idx--;
} else
idx = ieee->crypt_info.tx_keyidx;
if (!(ext->ext_flags & IW_ENCODE_EXT_GROUP_KEY) &&
ext->alg != IW_ENCODE_ALG_WEP)
if (idx != 0 || ieee->iw_mode != IW_MODE_INFRA)
return -EINVAL;
encoding->flags = idx + 1;
memset(ext, 0, sizeof(*ext));
if (!sec->enabled) {
ext->alg = IW_ENCODE_ALG_NONE;
ext->key_len = 0;
encoding->flags |= IW_ENCODE_DISABLED;
} else {
if (sec->encode_alg[idx] == SEC_ALG_WEP)
ext->alg = IW_ENCODE_ALG_WEP;
else if (sec->encode_alg[idx] == SEC_ALG_TKIP)
ext->alg = IW_ENCODE_ALG_TKIP;
else if (sec->encode_alg[idx] == SEC_ALG_CCMP)
ext->alg = IW_ENCODE_ALG_CCMP;
else
return -EINVAL;
ext->key_len = sec->key_sizes[idx];
memcpy(ext->key, sec->keys[idx], ext->key_len);
encoding->flags |= IW_ENCODE_ENABLED;
if (ext->key_len &&
(ext->alg == IW_ENCODE_ALG_TKIP ||
ext->alg == IW_ENCODE_ALG_CCMP))
ext->ext_flags |= IW_ENCODE_EXT_TX_SEQ_VALID;
}
return 0;
}
EXPORT_SYMBOL(ieee80211_wx_set_encodeext);
EXPORT_SYMBOL(ieee80211_wx_get_encodeext);
EXPORT_SYMBOL(ieee80211_wx_get_scan);
EXPORT_SYMBOL(ieee80211_wx_set_encode);
EXPORT_SYMBOL(ieee80211_wx_get_encode);
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