diff options
Diffstat (limited to 'net/wireless/wext-sme.c')
| -rw-r--r-- | net/wireless/wext-sme.c | 414 |
1 files changed, 414 insertions, 0 deletions
diff --git a/net/wireless/wext-sme.c b/net/wireless/wext-sme.c new file mode 100644 index 000000000..a4e8af332 --- /dev/null +++ b/net/wireless/wext-sme.c @@ -0,0 +1,414 @@ +/* + * cfg80211 wext compat for managed mode. + * + * Copyright 2009 Johannes Berg <johannes@sipsolutions.net> + * Copyright (C) 2009 Intel Corporation. All rights reserved. + */ + +#include <linux/export.h> +#include <linux/etherdevice.h> +#include <linux/if_arp.h> +#include <linux/slab.h> +#include <net/cfg80211.h> +#include <net/cfg80211-wext.h> +#include "wext-compat.h" +#include "nl80211.h" + +int cfg80211_mgd_wext_connect(struct cfg80211_registered_device *rdev, + struct wireless_dev *wdev) +{ + struct cfg80211_cached_keys *ck = NULL; + const u8 *prev_bssid = NULL; + int err, i; + + ASSERT_RTNL(); + ASSERT_WDEV_LOCK(wdev); + + if (!netif_running(wdev->netdev)) + return 0; + + wdev->wext.connect.ie = wdev->wext.ie; + wdev->wext.connect.ie_len = wdev->wext.ie_len; + + /* Use default background scan period */ + wdev->wext.connect.bg_scan_period = -1; + + if (wdev->wext.keys) { + wdev->wext.keys->def = wdev->wext.default_key; + wdev->wext.keys->defmgmt = wdev->wext.default_mgmt_key; + if (wdev->wext.default_key != -1) + wdev->wext.connect.privacy = true; + } + + if (!wdev->wext.connect.ssid_len) + return 0; + + if (wdev->wext.keys) { + ck = kmemdup(wdev->wext.keys, sizeof(*ck), GFP_KERNEL); + if (!ck) + return -ENOMEM; + for (i = 0; i < 6; i++) + ck->params[i].key = ck->data[i]; + } + + if (wdev->wext.prev_bssid_valid) + prev_bssid = wdev->wext.prev_bssid; + + err = cfg80211_connect(rdev, wdev->netdev, + &wdev->wext.connect, ck, prev_bssid); + if (err) + kzfree(ck); + + return err; +} + +int cfg80211_mgd_wext_siwfreq(struct net_device *dev, + struct iw_request_info *info, + struct iw_freq *wextfreq, char *extra) +{ + struct wireless_dev *wdev = dev->ieee80211_ptr; + struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); + struct ieee80211_channel *chan = NULL; + int err, freq; + + /* call only for station! */ + if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION)) + return -EINVAL; + + freq = cfg80211_wext_freq(wextfreq); + if (freq < 0) + return freq; + + if (freq) { + chan = ieee80211_get_channel(wdev->wiphy, freq); + if (!chan) + return -EINVAL; + if (chan->flags & IEEE80211_CHAN_DISABLED) + return -EINVAL; + } + + wdev_lock(wdev); + + if (wdev->conn) { + bool event = true; + + if (wdev->wext.connect.channel == chan) { + err = 0; + goto out; + } + + /* if SSID set, we'll try right again, avoid event */ + if (wdev->wext.connect.ssid_len) + event = false; + err = cfg80211_disconnect(rdev, dev, + WLAN_REASON_DEAUTH_LEAVING, event); + if (err) + goto out; + } + + + wdev->wext.connect.channel = chan; + + /* + * SSID is not set, we just want to switch monitor channel, + * this is really just backward compatibility, if the SSID + * is set then we use the channel to select the BSS to use + * to connect to instead. If we were connected on another + * channel we disconnected above and reconnect below. + */ + if (chan && !wdev->wext.connect.ssid_len) { + struct cfg80211_chan_def chandef = { + .width = NL80211_CHAN_WIDTH_20_NOHT, + .center_freq1 = freq, + }; + + chandef.chan = ieee80211_get_channel(&rdev->wiphy, freq); + if (chandef.chan) + err = cfg80211_set_monitor_channel(rdev, &chandef); + else + err = -EINVAL; + goto out; + } + + err = cfg80211_mgd_wext_connect(rdev, wdev); + out: + wdev_unlock(wdev); + return err; +} + +int cfg80211_mgd_wext_giwfreq(struct net_device *dev, + struct iw_request_info *info, + struct iw_freq *freq, char *extra) +{ + struct wireless_dev *wdev = dev->ieee80211_ptr; + struct ieee80211_channel *chan = NULL; + + /* call only for station! */ + if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION)) + return -EINVAL; + + wdev_lock(wdev); + if (wdev->current_bss) + chan = wdev->current_bss->pub.channel; + else if (wdev->wext.connect.channel) + chan = wdev->wext.connect.channel; + wdev_unlock(wdev); + + if (chan) { + freq->m = chan->center_freq; + freq->e = 6; + return 0; + } + + /* no channel if not joining */ + return -EINVAL; +} + +int cfg80211_mgd_wext_siwessid(struct net_device *dev, + struct iw_request_info *info, + struct iw_point *data, char *ssid) +{ + struct wireless_dev *wdev = dev->ieee80211_ptr; + struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); + size_t len = data->length; + int err; + + /* call only for station! */ + if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION)) + return -EINVAL; + + if (!data->flags) + len = 0; + + /* iwconfig uses nul termination in SSID.. */ + if (len > 0 && ssid[len - 1] == '\0') + len--; + + wdev_lock(wdev); + + err = 0; + + if (wdev->conn) { + bool event = true; + + if (wdev->wext.connect.ssid && len && + len == wdev->wext.connect.ssid_len && + memcmp(wdev->wext.connect.ssid, ssid, len) == 0) + goto out; + + /* if SSID set now, we'll try to connect, avoid event */ + if (len) + event = false; + err = cfg80211_disconnect(rdev, dev, + WLAN_REASON_DEAUTH_LEAVING, event); + if (err) + goto out; + } + + wdev->wext.prev_bssid_valid = false; + wdev->wext.connect.ssid = wdev->wext.ssid; + memcpy(wdev->wext.ssid, ssid, len); + wdev->wext.connect.ssid_len = len; + + wdev->wext.connect.crypto.control_port = false; + wdev->wext.connect.crypto.control_port_ethertype = + cpu_to_be16(ETH_P_PAE); + + err = cfg80211_mgd_wext_connect(rdev, wdev); + out: + wdev_unlock(wdev); + return err; +} + +int cfg80211_mgd_wext_giwessid(struct net_device *dev, + struct iw_request_info *info, + struct iw_point *data, char *ssid) +{ + struct wireless_dev *wdev = dev->ieee80211_ptr; + + /* call only for station! */ + if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION)) + return -EINVAL; + + data->flags = 0; + + wdev_lock(wdev); + if (wdev->current_bss) { + const u8 *ie; + + rcu_read_lock(); + ie = ieee80211_bss_get_ie(&wdev->current_bss->pub, + WLAN_EID_SSID); + if (ie) { + data->flags = 1; + data->length = ie[1]; + memcpy(ssid, ie + 2, data->length); + } + rcu_read_unlock(); + } else if (wdev->wext.connect.ssid && wdev->wext.connect.ssid_len) { + data->flags = 1; + data->length = wdev->wext.connect.ssid_len; + memcpy(ssid, wdev->wext.connect.ssid, data->length); + } + wdev_unlock(wdev); + + return 0; +} + +int cfg80211_mgd_wext_siwap(struct net_device *dev, + struct iw_request_info *info, + struct sockaddr *ap_addr, char *extra) +{ + struct wireless_dev *wdev = dev->ieee80211_ptr; + struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); + u8 *bssid = ap_addr->sa_data; + int err; + + /* call only for station! */ + if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION)) + return -EINVAL; + + if (ap_addr->sa_family != ARPHRD_ETHER) + return -EINVAL; + + /* automatic mode */ + if (is_zero_ether_addr(bssid) || is_broadcast_ether_addr(bssid)) + bssid = NULL; + + wdev_lock(wdev); + + if (wdev->conn) { + err = 0; + /* both automatic */ + if (!bssid && !wdev->wext.connect.bssid) + goto out; + + /* fixed already - and no change */ + if (wdev->wext.connect.bssid && bssid && + ether_addr_equal(bssid, wdev->wext.connect.bssid)) + goto out; + + err = cfg80211_disconnect(rdev, dev, + WLAN_REASON_DEAUTH_LEAVING, false); + if (err) + goto out; + } + + if (bssid) { + memcpy(wdev->wext.bssid, bssid, ETH_ALEN); + wdev->wext.connect.bssid = wdev->wext.bssid; + } else + wdev->wext.connect.bssid = NULL; + + err = cfg80211_mgd_wext_connect(rdev, wdev); + out: + wdev_unlock(wdev); + return err; +} + +int cfg80211_mgd_wext_giwap(struct net_device *dev, + struct iw_request_info *info, + struct sockaddr *ap_addr, char *extra) +{ + struct wireless_dev *wdev = dev->ieee80211_ptr; + + /* call only for station! */ + if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION)) + return -EINVAL; + + ap_addr->sa_family = ARPHRD_ETHER; + + wdev_lock(wdev); + if (wdev->current_bss) + memcpy(ap_addr->sa_data, wdev->current_bss->pub.bssid, ETH_ALEN); + else + eth_zero_addr(ap_addr->sa_data); + wdev_unlock(wdev); + + return 0; +} + +int cfg80211_wext_siwgenie(struct net_device *dev, + struct iw_request_info *info, + struct iw_point *data, char *extra) +{ + struct wireless_dev *wdev = dev->ieee80211_ptr; + struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); + u8 *ie = extra; + int ie_len = data->length, err; + + if (wdev->iftype != NL80211_IFTYPE_STATION) + return -EOPNOTSUPP; + + if (!ie_len) + ie = NULL; + + wdev_lock(wdev); + + /* no change */ + err = 0; + if (wdev->wext.ie_len == ie_len && + memcmp(wdev->wext.ie, ie, ie_len) == 0) + goto out; + + if (ie_len) { + ie = kmemdup(extra, ie_len, GFP_KERNEL); + if (!ie) { + err = -ENOMEM; + goto out; + } + } else + ie = NULL; + + kfree(wdev->wext.ie); + wdev->wext.ie = ie; + wdev->wext.ie_len = ie_len; + + if (wdev->conn) { + err = cfg80211_disconnect(rdev, dev, + WLAN_REASON_DEAUTH_LEAVING, false); + if (err) + goto out; + } + + /* userspace better not think we'll reconnect */ + err = 0; + out: + wdev_unlock(wdev); + return err; +} + +int cfg80211_wext_siwmlme(struct net_device *dev, + struct iw_request_info *info, + struct iw_point *data, char *extra) +{ + struct wireless_dev *wdev = dev->ieee80211_ptr; + struct iw_mlme *mlme = (struct iw_mlme *)extra; + struct cfg80211_registered_device *rdev; + int err; + + if (!wdev) + return -EOPNOTSUPP; + + rdev = wiphy_to_rdev(wdev->wiphy); + + if (wdev->iftype != NL80211_IFTYPE_STATION) + return -EINVAL; + + if (mlme->addr.sa_family != ARPHRD_ETHER) + return -EINVAL; + + wdev_lock(wdev); + switch (mlme->cmd) { + case IW_MLME_DEAUTH: + case IW_MLME_DISASSOC: + err = cfg80211_disconnect(rdev, dev, mlme->reason_code, true); + break; + default: + err = -EOPNOTSUPP; + break; + } + wdev_unlock(wdev); + + return err; +} |