diff options
Diffstat (limited to 'net/wireless_ath/ibss.c')
| -rwxr-xr-x | net/wireless_ath/ibss.c | 527 |
1 files changed, 0 insertions, 527 deletions
diff --git a/net/wireless_ath/ibss.c b/net/wireless_ath/ibss.c deleted file mode 100755 index 30f20fe..0000000 --- a/net/wireless_ath/ibss.c +++ /dev/null @@ -1,527 +0,0 @@ -/* - * Some IBSS support code for cfg80211. - * - * Copyright 2009 Johannes Berg <johannes@sipsolutions.net> - */ - -#include <linux/etherdevice.h> -#include <linux/if_arp.h> -#include <linux/slab.h> -#include <linux/export.h> -#include <net/cfg80211.h> -#include "wext-compat.h" -#include "nl80211.h" - - -void __cfg80211_ibss_joined(struct net_device *dev, const u8 *bssid) -{ - struct wireless_dev *wdev = dev->ieee80211_ptr; - struct cfg80211_bss *bss; -#ifdef CONFIG_CFG80211_WEXT - union iwreq_data wrqu; -#endif - - if (WARN_ON(wdev->iftype != NL80211_IFTYPE_ADHOC)) - return; - - if (!wdev->ssid_len) - return; - - bss = cfg80211_get_bss(wdev->wiphy, NULL, bssid, - wdev->ssid, wdev->ssid_len, - WLAN_CAPABILITY_IBSS, WLAN_CAPABILITY_IBSS); - - if (WARN_ON(!bss)) - return; - - if (wdev->current_bss) { - cfg80211_unhold_bss(wdev->current_bss); - cfg80211_put_bss(&wdev->current_bss->pub); - } - - cfg80211_hold_bss(bss_from_pub(bss)); - wdev->current_bss = bss_from_pub(bss); - - cfg80211_upload_connect_keys(wdev); - - nl80211_send_ibss_bssid(wiphy_to_dev(wdev->wiphy), dev, bssid, - GFP_KERNEL); -#ifdef CONFIG_CFG80211_WEXT - memset(&wrqu, 0, sizeof(wrqu)); - memcpy(wrqu.ap_addr.sa_data, bssid, ETH_ALEN); - wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL); -#endif -} - -void cfg80211_ibss_joined(struct net_device *dev, const u8 *bssid, gfp_t gfp) -{ - struct wireless_dev *wdev = dev->ieee80211_ptr; - struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); - struct cfg80211_event *ev; - unsigned long flags; - - CFG80211_DEV_WARN_ON(!wdev->ssid_len); - - ev = kzalloc(sizeof(*ev), gfp); - if (!ev) - return; - - ev->type = EVENT_IBSS_JOINED; - memcpy(ev->cr.bssid, bssid, ETH_ALEN); - - spin_lock_irqsave(&wdev->event_lock, flags); - list_add_tail(&ev->list, &wdev->event_list); - spin_unlock_irqrestore(&wdev->event_lock, flags); - queue_work(cfg80211_wq, &rdev->event_work); -} -EXPORT_SYMBOL(cfg80211_ibss_joined); - -int __cfg80211_join_ibss(struct cfg80211_registered_device *rdev, - struct net_device *dev, - struct cfg80211_ibss_params *params, - struct cfg80211_cached_keys *connkeys) -{ - struct wireless_dev *wdev = dev->ieee80211_ptr; - int err; - - ASSERT_WDEV_LOCK(wdev); - - if (wdev->ssid_len) - return -EALREADY; - - if (!params->basic_rates) { - /* - * If no rates were explicitly configured, - * use the mandatory rate set for 11b or - * 11a for maximum compatibility. - */ - struct ieee80211_supported_band *sband = - rdev->wiphy.bands[params->channel->band]; - int j; - u32 flag = params->channel->band == IEEE80211_BAND_5GHZ ? - IEEE80211_RATE_MANDATORY_A : - IEEE80211_RATE_MANDATORY_B; - - for (j = 0; j < sband->n_bitrates; j++) { - if (sband->bitrates[j].flags & flag) - params->basic_rates |= BIT(j); - } - } - - if (WARN_ON(wdev->connect_keys)) - kfree(wdev->connect_keys); - wdev->connect_keys = connkeys; - -#ifdef CONFIG_CFG80211_WEXT - wdev->wext.ibss.channel = params->channel; -#endif - err = rdev->ops->join_ibss(&rdev->wiphy, dev, params); - if (err) { - wdev->connect_keys = NULL; - return err; - } - - memcpy(wdev->ssid, params->ssid, params->ssid_len); - wdev->ssid_len = params->ssid_len; - - return 0; -} - -int cfg80211_join_ibss(struct cfg80211_registered_device *rdev, - struct net_device *dev, - struct cfg80211_ibss_params *params, - struct cfg80211_cached_keys *connkeys) -{ - struct wireless_dev *wdev = dev->ieee80211_ptr; - int err; - - mutex_lock(&rdev->devlist_mtx); - wdev_lock(wdev); - err = __cfg80211_join_ibss(rdev, dev, params, connkeys); - wdev_unlock(wdev); - mutex_unlock(&rdev->devlist_mtx); - - return err; -} - -static void __cfg80211_clear_ibss(struct net_device *dev, bool nowext) -{ - struct wireless_dev *wdev = dev->ieee80211_ptr; - struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); - int i; - - ASSERT_WDEV_LOCK(wdev); - - kfree(wdev->connect_keys); - wdev->connect_keys = NULL; - - /* - * Delete all the keys ... pairwise keys can't really - * exist any more anyway, but default keys might. - */ - if (rdev->ops->del_key) - for (i = 0; i < 6; i++) - rdev->ops->del_key(wdev->wiphy, dev, i, false, NULL); - - if (wdev->current_bss) { - cfg80211_unhold_bss(wdev->current_bss); - cfg80211_put_bss(&wdev->current_bss->pub); - } - - wdev->current_bss = NULL; - wdev->ssid_len = 0; -#ifdef CONFIG_CFG80211_WEXT - if (!nowext) - wdev->wext.ibss.ssid_len = 0; -#endif -} - -void cfg80211_clear_ibss(struct net_device *dev, bool nowext) -{ - struct wireless_dev *wdev = dev->ieee80211_ptr; - - wdev_lock(wdev); - __cfg80211_clear_ibss(dev, nowext); - wdev_unlock(wdev); -} - -int __cfg80211_leave_ibss(struct cfg80211_registered_device *rdev, - struct net_device *dev, bool nowext) -{ - struct wireless_dev *wdev = dev->ieee80211_ptr; - int err; - - ASSERT_WDEV_LOCK(wdev); - - if (!wdev->ssid_len) - return -ENOLINK; - - err = rdev->ops->leave_ibss(&rdev->wiphy, dev); - - if (err) - return err; - - __cfg80211_clear_ibss(dev, nowext); - - return 0; -} - -int cfg80211_leave_ibss(struct cfg80211_registered_device *rdev, - struct net_device *dev, bool nowext) -{ - struct wireless_dev *wdev = dev->ieee80211_ptr; - int err; - - wdev_lock(wdev); - err = __cfg80211_leave_ibss(rdev, dev, nowext); - wdev_unlock(wdev); - - return err; -} - -#ifdef CONFIG_CFG80211_WEXT -int cfg80211_ibss_wext_join(struct cfg80211_registered_device *rdev, - struct wireless_dev *wdev) -{ - struct cfg80211_cached_keys *ck = NULL; - enum ieee80211_band band; - int i, err; - - ASSERT_WDEV_LOCK(wdev); - - if (!wdev->wext.ibss.beacon_interval) - wdev->wext.ibss.beacon_interval = 100; - - /* try to find an IBSS channel if none requested ... */ - if (!wdev->wext.ibss.channel) { - for (band = 0; band < IEEE80211_NUM_BANDS; band++) { - struct ieee80211_supported_band *sband; - struct ieee80211_channel *chan; - - sband = rdev->wiphy.bands[band]; - if (!sband) - continue; - - for (i = 0; i < sband->n_channels; i++) { - chan = &sband->channels[i]; - if (chan->flags & IEEE80211_CHAN_NO_IBSS) - continue; - if (chan->flags & IEEE80211_CHAN_DISABLED) - continue; - wdev->wext.ibss.channel = chan; - break; - } - - if (wdev->wext.ibss.channel) - break; - } - - if (!wdev->wext.ibss.channel) - return -EINVAL; - } - - /* don't join -- SSID is not there */ - if (!wdev->wext.ibss.ssid_len) - return 0; - - if (!netif_running(wdev->netdev)) - return 0; - - if (wdev->wext.keys) { - wdev->wext.keys->def = wdev->wext.default_key; - wdev->wext.keys->defmgmt = wdev->wext.default_mgmt_key; - } - - wdev->wext.ibss.privacy = wdev->wext.default_key != -1; - - 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]; - } - err = __cfg80211_join_ibss(rdev, wdev->netdev, - &wdev->wext.ibss, ck); - if (err) - kfree(ck); - - return err; -} - -int cfg80211_ibss_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_dev(wdev->wiphy); - struct ieee80211_channel *chan = NULL; - int err, freq; - - /* call only for ibss! */ - if (WARN_ON(wdev->iftype != NL80211_IFTYPE_ADHOC)) - return -EINVAL; - - if (!rdev->ops->join_ibss) - return -EOPNOTSUPP; - - freq = cfg80211_wext_freq(wdev->wiphy, wextfreq); - if (freq < 0) - return freq; - - if (freq) { - chan = ieee80211_get_channel(wdev->wiphy, freq); - if (!chan) - return -EINVAL; - if (chan->flags & IEEE80211_CHAN_NO_IBSS || - chan->flags & IEEE80211_CHAN_DISABLED) - return -EINVAL; - } - - if (wdev->wext.ibss.channel == chan) - return 0; - - wdev_lock(wdev); - err = 0; - if (wdev->ssid_len) - err = __cfg80211_leave_ibss(rdev, dev, true); - wdev_unlock(wdev); - - if (err) - return err; - - if (chan) { - wdev->wext.ibss.channel = chan; - wdev->wext.ibss.channel_fixed = true; - } else { - /* cfg80211_ibss_wext_join will pick one if needed */ - wdev->wext.ibss.channel_fixed = false; - } - - mutex_lock(&rdev->devlist_mtx); - wdev_lock(wdev); - err = cfg80211_ibss_wext_join(rdev, wdev); - wdev_unlock(wdev); - mutex_unlock(&rdev->devlist_mtx); - - return err; -} - -int cfg80211_ibss_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 ibss! */ - if (WARN_ON(wdev->iftype != NL80211_IFTYPE_ADHOC)) - return -EINVAL; - - wdev_lock(wdev); - if (wdev->current_bss) - chan = wdev->current_bss->pub.channel; - else if (wdev->wext.ibss.channel) - chan = wdev->wext.ibss.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_ibss_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_dev(wdev->wiphy); - size_t len = data->length; - int err; - - /* call only for ibss! */ - if (WARN_ON(wdev->iftype != NL80211_IFTYPE_ADHOC)) - return -EINVAL; - - if (!rdev->ops->join_ibss) - return -EOPNOTSUPP; - - wdev_lock(wdev); - err = 0; - if (wdev->ssid_len) - err = __cfg80211_leave_ibss(rdev, dev, true); - wdev_unlock(wdev); - - if (err) - return err; - - /* iwconfig uses nul termination in SSID.. */ - if (len > 0 && ssid[len - 1] == '\0') - len--; - - wdev->wext.ibss.ssid = wdev->ssid; - memcpy(wdev->wext.ibss.ssid, ssid, len); - wdev->wext.ibss.ssid_len = len; - - mutex_lock(&rdev->devlist_mtx); - wdev_lock(wdev); - err = cfg80211_ibss_wext_join(rdev, wdev); - wdev_unlock(wdev); - mutex_unlock(&rdev->devlist_mtx); - - return err; -} - -int cfg80211_ibss_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 ibss! */ - if (WARN_ON(wdev->iftype != NL80211_IFTYPE_ADHOC)) - return -EINVAL; - - data->flags = 0; - - wdev_lock(wdev); - if (wdev->ssid_len) { - data->flags = 1; - data->length = wdev->ssid_len; - memcpy(ssid, wdev->ssid, data->length); - } else if (wdev->wext.ibss.ssid && wdev->wext.ibss.ssid_len) { - data->flags = 1; - data->length = wdev->wext.ibss.ssid_len; - memcpy(ssid, wdev->wext.ibss.ssid, data->length); - } - wdev_unlock(wdev); - - return 0; -} - -int cfg80211_ibss_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_dev(wdev->wiphy); - u8 *bssid = ap_addr->sa_data; - int err; - - /* call only for ibss! */ - if (WARN_ON(wdev->iftype != NL80211_IFTYPE_ADHOC)) - return -EINVAL; - - if (!rdev->ops->join_ibss) - return -EOPNOTSUPP; - - if (ap_addr->sa_family != ARPHRD_ETHER) - return -EINVAL; - - /* automatic mode */ - if (is_zero_ether_addr(bssid) || is_broadcast_ether_addr(bssid)) - bssid = NULL; - - /* both automatic */ - if (!bssid && !wdev->wext.ibss.bssid) - return 0; - - /* fixed already - and no change */ - if (wdev->wext.ibss.bssid && bssid && - compare_ether_addr(bssid, wdev->wext.ibss.bssid) == 0) - return 0; - - wdev_lock(wdev); - err = 0; - if (wdev->ssid_len) - err = __cfg80211_leave_ibss(rdev, dev, true); - wdev_unlock(wdev); - - if (err) - return err; - - if (bssid) { - memcpy(wdev->wext.bssid, bssid, ETH_ALEN); - wdev->wext.ibss.bssid = wdev->wext.bssid; - } else - wdev->wext.ibss.bssid = NULL; - - mutex_lock(&rdev->devlist_mtx); - wdev_lock(wdev); - err = cfg80211_ibss_wext_join(rdev, wdev); - wdev_unlock(wdev); - mutex_unlock(&rdev->devlist_mtx); - - return err; -} - -int cfg80211_ibss_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 ibss! */ - if (WARN_ON(wdev->iftype != NL80211_IFTYPE_ADHOC)) - 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 if (wdev->wext.ibss.bssid) - memcpy(ap_addr->sa_data, wdev->wext.ibss.bssid, ETH_ALEN); - else - memset(ap_addr->sa_data, 0, ETH_ALEN); - - wdev_unlock(wdev); - - return 0; -} -#endif |