diff options
Diffstat (limited to 'net/wireless/ibss.c')
-rw-r--r-- | net/wireless/ibss.c | 294 |
1 files changed, 217 insertions, 77 deletions
diff --git a/net/wireless/ibss.c b/net/wireless/ibss.c index a4a1c34..c883389 100644 --- a/net/wireless/ibss.c +++ b/net/wireless/ibss.c @@ -7,10 +7,11 @@ #include <linux/etherdevice.h> #include <linux/if_arp.h> #include <net/cfg80211.h> +#include "wext-compat.h" #include "nl80211.h" -void cfg80211_ibss_joined(struct net_device *dev, const u8 *bssid, gfp_t gfp) +void __cfg80211_ibss_joined(struct net_device *dev, const u8 *bssid) { struct wireless_dev *wdev = dev->ieee80211_ptr; struct cfg80211_bss *bss; @@ -21,10 +22,7 @@ void cfg80211_ibss_joined(struct net_device *dev, const u8 *bssid, gfp_t gfp) if (WARN_ON(wdev->iftype != NL80211_IFTYPE_ADHOC)) return; - if (WARN_ON(!wdev->ssid_len)) - return; - - if (memcmp(bssid, wdev->bssid, ETH_ALEN) == 0) + if (!wdev->ssid_len) return; bss = cfg80211_get_bss(wdev->wiphy, NULL, bssid, @@ -36,39 +34,76 @@ void cfg80211_ibss_joined(struct net_device *dev, const u8 *bssid, gfp_t gfp) if (wdev->current_bss) { cfg80211_unhold_bss(wdev->current_bss); - cfg80211_put_bss(wdev->current_bss); + cfg80211_put_bss(&wdev->current_bss->pub); } - cfg80211_hold_bss(bss); - wdev->current_bss = bss; - memcpy(wdev->bssid, bssid, ETH_ALEN); + 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); + nl80211_send_ibss_bssid(wiphy_to_dev(wdev->wiphy), dev, bssid, + GFP_KERNEL); #ifdef CONFIG_WIRELESS_EXT 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); + schedule_work(&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) +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; + struct ieee80211_channel *chan; int err; + ASSERT_WDEV_LOCK(wdev); + + chan = rdev_fixed_channel(rdev, wdev); + if (chan && chan != params->channel) + return -EBUSY; + if (wdev->ssid_len) return -EALREADY; + if (WARN_ON(wdev->connect_keys)) + kfree(wdev->connect_keys); + wdev->connect_keys = connkeys; + #ifdef CONFIG_WIRELESS_EXT wdev->wext.ibss.channel = params->channel; #endif err = rdev->ops->join_ibss(&rdev->wiphy, dev, params); - - if (err) + if (err) { + wdev->connect_keys = NULL; return err; + } memcpy(wdev->ssid, params->ssid, params->ssid_len); wdev->ssid_len = params->ssid_len; @@ -76,45 +111,107 @@ int cfg80211_join_ibss(struct cfg80211_registered_device *rdev, return 0; } -void cfg80211_clear_ibss(struct net_device *dev, bool nowext) +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, NULL); if (wdev->current_bss) { cfg80211_unhold_bss(wdev->current_bss); - cfg80211_put_bss(wdev->current_bss); + cfg80211_put_bss(&wdev->current_bss->pub); } wdev->current_bss = NULL; wdev->ssid_len = 0; - memset(wdev->bssid, 0, ETH_ALEN); #ifdef CONFIG_WIRELESS_EXT if (!nowext) wdev->wext.ibss.ssid_len = 0; #endif } -int cfg80211_leave_ibss(struct cfg80211_registered_device *rdev, - struct net_device *dev, bool nowext) +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); +} + +static 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); + __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_WIRELESS_EXT -static int cfg80211_ibss_wext_join(struct cfg80211_registered_device *rdev, - struct wireless_dev *wdev) +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; + int i, err; + + ASSERT_WDEV_LOCK(wdev); if (!wdev->wext.ibss.beacon_interval) wdev->wext.ibss.beacon_interval = 100; @@ -154,43 +251,66 @@ static int cfg80211_ibss_wext_join(struct cfg80211_registered_device *rdev, if (!netif_running(wdev->netdev)) return 0; - return cfg80211_join_ibss(wiphy_to_dev(wdev->wiphy), - wdev->netdev, &wdev->wext.ibss); + if (wdev->wext.keys) + wdev->wext.keys->def = wdev->wext.default_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 *freq, char *extra) + struct iw_freq *wextfreq, char *extra) { struct wireless_dev *wdev = dev->ieee80211_ptr; - struct ieee80211_channel *chan; - int err; + 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 (!wiphy_to_dev(wdev->wiphy)->ops->join_ibss) + if (!rdev->ops->join_ibss) return -EOPNOTSUPP; - chan = cfg80211_wext_freq(wdev->wiphy, freq); - if (chan && IS_ERR(chan)) - return PTR_ERR(chan); + freq = cfg80211_wext_freq(wdev->wiphy, wextfreq); + if (freq < 0) + return freq; - if (chan && - (chan->flags & IEEE80211_CHAN_NO_IBSS || - chan->flags & IEEE80211_CHAN_DISABLED)) - return -EINVAL; + 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; - if (wdev->ssid_len) { - err = cfg80211_leave_ibss(wiphy_to_dev(wdev->wiphy), - dev, true); - if (err) - return err; - } + 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; @@ -200,10 +320,14 @@ int cfg80211_ibss_wext_siwfreq(struct net_device *dev, wdev->wext.ibss.channel_fixed = false; } - return cfg80211_ibss_wext_join(wiphy_to_dev(wdev->wiphy), wdev); + 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; } -/* temporary symbol - mark GPL - in the future the handler won't be */ -EXPORT_SYMBOL_GPL(cfg80211_ibss_wext_siwfreq); int cfg80211_ibss_wext_giwfreq(struct net_device *dev, struct iw_request_info *info, @@ -216,10 +340,12 @@ int cfg80211_ibss_wext_giwfreq(struct net_device *dev, if (WARN_ON(wdev->iftype != NL80211_IFTYPE_ADHOC)) return -EINVAL; + wdev_lock(wdev); if (wdev->current_bss) - chan = wdev->current_bss->channel; + 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; @@ -230,14 +356,13 @@ int cfg80211_ibss_wext_giwfreq(struct net_device *dev, /* no channel if not joining */ return -EINVAL; } -/* temporary symbol - mark GPL - in the future the handler won't be */ -EXPORT_SYMBOL_GPL(cfg80211_ibss_wext_giwfreq); 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; @@ -245,15 +370,17 @@ int cfg80211_ibss_wext_siwessid(struct net_device *dev, if (WARN_ON(wdev->iftype != NL80211_IFTYPE_ADHOC)) return -EINVAL; - if (!wiphy_to_dev(wdev->wiphy)->ops->join_ibss) + if (!rdev->ops->join_ibss) return -EOPNOTSUPP; - if (wdev->ssid_len) { - err = cfg80211_leave_ibss(wiphy_to_dev(wdev->wiphy), - dev, true); - if (err) - return err; - } + 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') @@ -263,10 +390,14 @@ int cfg80211_ibss_wext_siwessid(struct net_device *dev, memcpy(wdev->wext.ibss.ssid, ssid, len); wdev->wext.ibss.ssid_len = len; - return cfg80211_ibss_wext_join(wiphy_to_dev(wdev->wiphy), wdev); + 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; } -/* temporary symbol - mark GPL - in the future the handler won't be */ -EXPORT_SYMBOL_GPL(cfg80211_ibss_wext_siwessid); int cfg80211_ibss_wext_giwessid(struct net_device *dev, struct iw_request_info *info, @@ -280,6 +411,7 @@ int cfg80211_ibss_wext_giwessid(struct net_device *dev, data->flags = 0; + wdev_lock(wdev); if (wdev->ssid_len) { data->flags = 1; data->length = wdev->ssid_len; @@ -289,17 +421,17 @@ int cfg80211_ibss_wext_giwessid(struct net_device *dev, data->length = wdev->wext.ibss.ssid_len; memcpy(ssid, wdev->wext.ibss.ssid, data->length); } + wdev_unlock(wdev); return 0; } -/* temporary symbol - mark GPL - in the future the handler won't be */ -EXPORT_SYMBOL_GPL(cfg80211_ibss_wext_giwessid); 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; @@ -307,7 +439,7 @@ int cfg80211_ibss_wext_siwap(struct net_device *dev, if (WARN_ON(wdev->iftype != NL80211_IFTYPE_ADHOC)) return -EINVAL; - if (!wiphy_to_dev(wdev->wiphy)->ops->join_ibss) + if (!rdev->ops->join_ibss) return -EOPNOTSUPP; if (ap_addr->sa_family != ARPHRD_ETHER) @@ -326,12 +458,14 @@ int cfg80211_ibss_wext_siwap(struct net_device *dev, compare_ether_addr(bssid, wdev->wext.ibss.bssid) == 0) return 0; - if (wdev->ssid_len) { - err = cfg80211_leave_ibss(wiphy_to_dev(wdev->wiphy), - dev, true); - if (err) - return err; - } + 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); @@ -339,10 +473,14 @@ int cfg80211_ibss_wext_siwap(struct net_device *dev, } else wdev->wext.ibss.bssid = NULL; - return cfg80211_ibss_wext_join(wiphy_to_dev(wdev->wiphy), wdev); + 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; } -/* temporary symbol - mark GPL - in the future the handler won't be */ -EXPORT_SYMBOL_GPL(cfg80211_ibss_wext_siwap); int cfg80211_ibss_wext_giwap(struct net_device *dev, struct iw_request_info *info, @@ -356,14 +494,16 @@ int cfg80211_ibss_wext_giwap(struct net_device *dev, ap_addr->sa_family = ARPHRD_ETHER; - if (wdev->wext.ibss.bssid) { + 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); - return 0; - } + else + memset(ap_addr->sa_data, 0, ETH_ALEN); + + wdev_unlock(wdev); - memcpy(ap_addr->sa_data, wdev->bssid, ETH_ALEN); return 0; } -/* temporary symbol - mark GPL - in the future the handler won't be */ -EXPORT_SYMBOL_GPL(cfg80211_ibss_wext_giwap); #endif |