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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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330 lines
8.3 KiB
C
330 lines
8.3 KiB
C
![]() |
/*
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* cfg80211 wext compat for managed mode.
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*
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* Copyright 2009 Johannes Berg <johannes@sipsolutions.net>
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* Copyright (C) 2009 Intel Corporation. All rights reserved.
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*/
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#include <linux/etherdevice.h>
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#include <linux/if_arp.h>
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#include <net/cfg80211.h>
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#include "nl80211.h"
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static int cfg80211_mgd_wext_connect(struct cfg80211_registered_device *rdev,
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struct wireless_dev *wdev)
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{
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int err;
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if (!netif_running(wdev->netdev))
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return 0;
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wdev->wext.connect.ie = wdev->wext.ie;
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wdev->wext.connect.ie_len = wdev->wext.ie_len;
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wdev->wext.connect.privacy = wdev->wext.default_key != -1;
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err = 0;
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if (wdev->wext.connect.ssid_len != 0)
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err = cfg80211_connect(rdev, wdev->netdev,
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&wdev->wext.connect);
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return err;
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}
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int cfg80211_mgd_wext_siwfreq(struct net_device *dev,
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struct iw_request_info *info,
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struct iw_freq *freq, char *extra)
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{
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struct wireless_dev *wdev = dev->ieee80211_ptr;
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struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
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struct ieee80211_channel *chan;
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int err;
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/* call only for station! */
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if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
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return -EINVAL;
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chan = cfg80211_wext_freq(wdev->wiphy, freq);
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if (chan && IS_ERR(chan))
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return PTR_ERR(chan);
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if (chan && (chan->flags & IEEE80211_CHAN_DISABLED))
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return -EINVAL;
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if (wdev->wext.connect.channel == chan)
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return 0;
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if (wdev->sme_state != CFG80211_SME_IDLE) {
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bool event = true;
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/* if SSID set, we'll try right again, avoid event */
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if (wdev->wext.connect.ssid_len)
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event = false;
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err = cfg80211_disconnect(wiphy_to_dev(wdev->wiphy),
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dev, WLAN_REASON_DEAUTH_LEAVING,
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event);
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if (err)
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return err;
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}
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wdev->wext.connect.channel = chan;
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/* SSID is not set, we just want to switch channel */
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if (wdev->wext.connect.ssid_len && chan) {
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if (!rdev->ops->set_channel)
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return -EOPNOTSUPP;
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return rdev->ops->set_channel(wdev->wiphy, chan,
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NL80211_CHAN_NO_HT);
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}
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return cfg80211_mgd_wext_connect(wiphy_to_dev(wdev->wiphy), wdev);
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}
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/* temporary symbol - mark GPL - in the future the handler won't be */
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EXPORT_SYMBOL_GPL(cfg80211_mgd_wext_siwfreq);
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int cfg80211_mgd_wext_giwfreq(struct net_device *dev,
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struct iw_request_info *info,
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struct iw_freq *freq, char *extra)
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{
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struct wireless_dev *wdev = dev->ieee80211_ptr;
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struct ieee80211_channel *chan = NULL;
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/* call only for station! */
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if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
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return -EINVAL;
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if (wdev->current_bss)
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chan = wdev->current_bss->channel;
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else if (wdev->wext.connect.channel)
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chan = wdev->wext.connect.channel;
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if (chan) {
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freq->m = chan->center_freq;
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freq->e = 6;
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return 0;
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}
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/* no channel if not joining */
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return -EINVAL;
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}
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/* temporary symbol - mark GPL - in the future the handler won't be */
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EXPORT_SYMBOL_GPL(cfg80211_mgd_wext_giwfreq);
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int cfg80211_mgd_wext_siwessid(struct net_device *dev,
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struct iw_request_info *info,
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struct iw_point *data, char *ssid)
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{
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struct wireless_dev *wdev = dev->ieee80211_ptr;
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size_t len = data->length;
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int err;
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/* call only for station! */
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if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
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return -EINVAL;
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if (!data->flags)
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len = 0;
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/* iwconfig uses nul termination in SSID.. */
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if (len > 0 && ssid[len - 1] == '\0')
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len--;
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if (wdev->wext.connect.ssid && len &&
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len == wdev->wext.connect.ssid_len &&
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memcmp(wdev->wext.connect.ssid, ssid, len))
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return 0;
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if (wdev->sme_state != CFG80211_SME_IDLE) {
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bool event = true;
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/* if SSID set now, we'll try to connect, avoid event */
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if (len)
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event = false;
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err = cfg80211_disconnect(wiphy_to_dev(wdev->wiphy),
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dev, WLAN_REASON_DEAUTH_LEAVING,
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event);
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if (err)
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return err;
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}
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wdev->wext.connect.ssid = wdev->wext.ssid;
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memcpy(wdev->wext.ssid, ssid, len);
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wdev->wext.connect.ssid_len = len;
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wdev->wext.connect.crypto.control_port = false;
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return cfg80211_mgd_wext_connect(wiphy_to_dev(wdev->wiphy), wdev);
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}
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/* temporary symbol - mark GPL - in the future the handler won't be */
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EXPORT_SYMBOL_GPL(cfg80211_mgd_wext_siwessid);
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int cfg80211_mgd_wext_giwessid(struct net_device *dev,
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struct iw_request_info *info,
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struct iw_point *data, char *ssid)
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{
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struct wireless_dev *wdev = dev->ieee80211_ptr;
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/* call only for station! */
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if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
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return -EINVAL;
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data->flags = 0;
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if (wdev->ssid_len) {
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data->flags = 1;
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data->length = wdev->ssid_len;
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memcpy(ssid, wdev->ssid, data->length);
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} else if (wdev->wext.connect.ssid && wdev->wext.connect.ssid_len) {
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data->flags = 1;
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data->length = wdev->wext.connect.ssid_len;
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memcpy(ssid, wdev->wext.connect.ssid, data->length);
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} else
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data->flags = 0;
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return 0;
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}
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/* temporary symbol - mark GPL - in the future the handler won't be */
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EXPORT_SYMBOL_GPL(cfg80211_mgd_wext_giwessid);
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int cfg80211_mgd_wext_siwap(struct net_device *dev,
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struct iw_request_info *info,
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struct sockaddr *ap_addr, char *extra)
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{
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struct wireless_dev *wdev = dev->ieee80211_ptr;
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u8 *bssid = ap_addr->sa_data;
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int err;
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/* call only for station! */
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if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
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return -EINVAL;
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if (ap_addr->sa_family != ARPHRD_ETHER)
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return -EINVAL;
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/* automatic mode */
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if (is_zero_ether_addr(bssid) || is_broadcast_ether_addr(bssid))
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bssid = NULL;
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/* both automatic */
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if (!bssid && !wdev->wext.connect.bssid)
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return 0;
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/* fixed already - and no change */
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if (wdev->wext.connect.bssid && bssid &&
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compare_ether_addr(bssid, wdev->wext.connect.bssid) == 0)
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return 0;
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if (wdev->sme_state != CFG80211_SME_IDLE) {
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err = cfg80211_disconnect(wiphy_to_dev(wdev->wiphy),
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dev, WLAN_REASON_DEAUTH_LEAVING,
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false);
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if (err)
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return err;
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}
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if (bssid) {
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memcpy(wdev->wext.bssid, bssid, ETH_ALEN);
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wdev->wext.connect.bssid = wdev->wext.bssid;
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} else
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wdev->wext.connect.bssid = NULL;
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return cfg80211_mgd_wext_connect(wiphy_to_dev(wdev->wiphy), wdev);
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}
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/* temporary symbol - mark GPL - in the future the handler won't be */
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EXPORT_SYMBOL_GPL(cfg80211_mgd_wext_siwap);
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int cfg80211_mgd_wext_giwap(struct net_device *dev,
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struct iw_request_info *info,
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struct sockaddr *ap_addr, char *extra)
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{
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struct wireless_dev *wdev = dev->ieee80211_ptr;
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/* call only for station! */
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if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
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return -EINVAL;
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ap_addr->sa_family = ARPHRD_ETHER;
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if (wdev->current_bss)
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memcpy(ap_addr->sa_data, wdev->current_bss->bssid, ETH_ALEN);
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else if (wdev->wext.connect.bssid)
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memcpy(ap_addr->sa_data, wdev->wext.connect.bssid, ETH_ALEN);
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else
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memset(ap_addr->sa_data, 0, ETH_ALEN);
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return 0;
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}
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/* temporary symbol - mark GPL - in the future the handler won't be */
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EXPORT_SYMBOL_GPL(cfg80211_mgd_wext_giwap);
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int cfg80211_wext_siwgenie(struct net_device *dev,
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struct iw_request_info *info,
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struct iw_point *data, char *extra)
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{
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struct wireless_dev *wdev = dev->ieee80211_ptr;
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struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
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u8 *ie = extra;
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int ie_len = data->length, err;
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if (wdev->iftype != NL80211_IFTYPE_STATION)
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return -EOPNOTSUPP;
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if (!ie_len)
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ie = NULL;
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/* no change */
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if (wdev->wext.ie_len == ie_len &&
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memcmp(wdev->wext.ie, ie, ie_len) == 0)
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return 0;
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if (ie_len) {
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ie = kmemdup(extra, ie_len, GFP_KERNEL);
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if (!ie)
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return -ENOMEM;
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} else
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ie = NULL;
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kfree(wdev->wext.ie);
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wdev->wext.ie = ie;
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wdev->wext.ie_len = ie_len;
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if (wdev->sme_state != CFG80211_SME_IDLE) {
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err = cfg80211_disconnect(rdev, dev,
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WLAN_REASON_DEAUTH_LEAVING, false);
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if (err)
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return err;
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}
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/* userspace better not think we'll reconnect */
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return 0;
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}
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EXPORT_SYMBOL_GPL(cfg80211_wext_siwgenie);
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int cfg80211_wext_siwmlme(struct net_device *dev,
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struct iw_request_info *info,
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struct iw_point *data, char *extra)
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{
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struct wireless_dev *wdev = dev->ieee80211_ptr;
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struct iw_mlme *mlme = (struct iw_mlme *)extra;
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struct cfg80211_registered_device *rdev;
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if (!wdev)
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return -EOPNOTSUPP;
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rdev = wiphy_to_dev(wdev->wiphy);
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if (wdev->iftype != NL80211_IFTYPE_STATION)
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return -EINVAL;
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if (mlme->addr.sa_family != ARPHRD_ETHER)
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return -EINVAL;
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switch (mlme->cmd) {
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case IW_MLME_DEAUTH:
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case IW_MLME_DISASSOC:
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return cfg80211_disconnect(rdev, dev, mlme->reason_code,
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true);
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default:
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return -EOPNOTSUPP;
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}
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}
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EXPORT_SYMBOL_GPL(cfg80211_wext_siwmlme);
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