#include <linux/module.h>
#include <linux/netdevice.h>
#include <linux/nl80211.h>
+#include <linux/slab.h>
#include <linux/wireless.h>
#include <net/cfg80211.h>
#include <net/iw_handler.h>
}
}
- WARN_ON(!bss);
+ /*
+ * We might be coming here because the driver reported
+ * a successful association at the same time as the
+ * user requested a deauth. In that case, we will have
+ * removed the BSS from the auth_bsses list due to the
+ * deauth request when the assoc response makes it. If
+ * the two code paths acquire the lock the other way
+ * around, that's just the standard situation of a
+ * deauth being requested while connected.
+ */
+ if (!bss)
+ goto out;
+ } else if (wdev->conn) {
+ cfg80211_sme_failed_assoc(wdev);
+ /*
+ * do not call connect_result() now because the
+ * sme will schedule work that does it later.
+ */
+ goto out;
}
if (!wdev->conn && wdev->sme_state == CFG80211_SME_IDLE) {
struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf;
const u8 *bssid = mgmt->bssid;
int i;
- bool done = false;
+ bool found = false;
ASSERT_WDEV_LOCK(wdev);
- nl80211_send_deauth(rdev, dev, buf, len, GFP_KERNEL);
-
if (wdev->current_bss &&
memcmp(wdev->current_bss->pub.bssid, bssid, ETH_ALEN) == 0) {
- done = true;
cfg80211_unhold_bss(wdev->current_bss);
cfg80211_put_bss(&wdev->current_bss->pub);
wdev->current_bss = NULL;
+ found = true;
} else for (i = 0; i < MAX_AUTH_BSSES; i++) {
if (wdev->auth_bsses[i] &&
memcmp(wdev->auth_bsses[i]->pub.bssid, bssid, ETH_ALEN) == 0) {
cfg80211_unhold_bss(wdev->auth_bsses[i]);
cfg80211_put_bss(&wdev->auth_bsses[i]->pub);
wdev->auth_bsses[i] = NULL;
- done = true;
+ found = true;
break;
}
if (wdev->authtry_bsses[i] &&
cfg80211_unhold_bss(wdev->authtry_bsses[i]);
cfg80211_put_bss(&wdev->authtry_bsses[i]->pub);
wdev->authtry_bsses[i] = NULL;
- done = true;
+ found = true;
break;
}
}
- WARN_ON(!done);
+ if (!found)
+ return;
+
+ nl80211_send_deauth(rdev, dev, buf, len, GFP_KERNEL);
if (wdev->sme_state == CFG80211_SME_CONNECTED) {
u16 reason_code;
}
EXPORT_SYMBOL(cfg80211_send_disassoc);
-void cfg80211_send_auth_timeout(struct net_device *dev, const u8 *addr)
+static void __cfg80211_auth_remove(struct wireless_dev *wdev, const u8 *addr)
{
- struct wireless_dev *wdev = dev->ieee80211_ptr;
- struct wiphy *wiphy = wdev->wiphy;
- struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
int i;
bool done = false;
- wdev_lock(wdev);
-
- nl80211_send_auth_timeout(rdev, dev, addr, GFP_KERNEL);
- if (wdev->sme_state == CFG80211_SME_CONNECTING)
- __cfg80211_connect_result(dev, addr, NULL, 0, NULL, 0,
- WLAN_STATUS_UNSPECIFIED_FAILURE,
- false, NULL);
+ ASSERT_WDEV_LOCK(wdev);
for (i = 0; addr && i < MAX_AUTH_BSSES; i++) {
if (wdev->authtry_bsses[i] &&
}
WARN_ON(!done);
+}
+
+void __cfg80211_auth_canceled(struct net_device *dev, const u8 *addr)
+{
+ __cfg80211_auth_remove(dev->ieee80211_ptr, addr);
+}
+EXPORT_SYMBOL(__cfg80211_auth_canceled);
+
+void cfg80211_send_auth_timeout(struct net_device *dev, const u8 *addr)
+{
+ struct wireless_dev *wdev = dev->ieee80211_ptr;
+ struct wiphy *wiphy = wdev->wiphy;
+ struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
+
+ wdev_lock(wdev);
+
+ nl80211_send_auth_timeout(rdev, dev, addr, GFP_KERNEL);
+ if (wdev->sme_state == CFG80211_SME_CONNECTING)
+ __cfg80211_connect_result(dev, addr, NULL, 0, NULL, 0,
+ WLAN_STATUS_UNSPECIFIED_FAILURE,
+ false, NULL);
+
+ __cfg80211_auth_remove(wdev, addr);
wdev_unlock(wdev);
}
struct cfg80211_assoc_request req;
struct cfg80211_internal_bss *bss;
int i, err, slot = -1;
+ bool was_connected = false;
ASSERT_WDEV_LOCK(wdev);
memset(&req, 0, sizeof(req));
- if (wdev->current_bss)
+ if (wdev->current_bss && prev_bssid &&
+ memcmp(wdev->current_bss->pub.bssid, prev_bssid, ETH_ALEN) == 0) {
+ /*
+ * Trying to reassociate: Allow this to proceed and let the old
+ * association to be dropped when the new one is completed.
+ */
+ if (wdev->sme_state == CFG80211_SME_CONNECTED) {
+ was_connected = true;
+ wdev->sme_state = CFG80211_SME_CONNECTING;
+ }
+ } else if (wdev->current_bss)
return -EALREADY;
req.ie = ie;
req.prev_bssid = prev_bssid;
req.bss = cfg80211_get_bss(&rdev->wiphy, chan, bssid, ssid, ssid_len,
WLAN_CAPABILITY_ESS, WLAN_CAPABILITY_ESS);
- if (!req.bss)
+ if (!req.bss) {
+ if (was_connected)
+ wdev->sme_state = CFG80211_SME_CONNECTED;
return -ENOENT;
+ }
bss = bss_from_pub(req.bss);
err = rdev->ops->assoc(&rdev->wiphy, dev, &req);
out:
+ if (err && was_connected)
+ wdev->sme_state = CFG80211_SME_CONNECTED;
/* still a reference in wdev->auth_bsses[slot] */
cfg80211_put_bss(req.bss);
return err;
}
}
}
+
+void cfg80211_ready_on_channel(struct net_device *dev, u64 cookie,
+ struct ieee80211_channel *chan,
+ enum nl80211_channel_type channel_type,
+ unsigned int duration, gfp_t gfp)
+{
+ struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
+ struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
+
+ nl80211_send_remain_on_channel(rdev, dev, cookie, chan, channel_type,
+ duration, gfp);
+}
+EXPORT_SYMBOL(cfg80211_ready_on_channel);
+
+void cfg80211_remain_on_channel_expired(struct net_device *dev,
+ u64 cookie,
+ struct ieee80211_channel *chan,
+ enum nl80211_channel_type channel_type,
+ gfp_t gfp)
+{
+ struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
+ struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
+
+ nl80211_send_remain_on_channel_cancel(rdev, dev, cookie, chan,
+ channel_type, gfp);
+}
+EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
+
+void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
+ struct station_info *sinfo, gfp_t gfp)
+{
+ struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
+ struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
+
+ nl80211_send_sta_event(rdev, dev, mac_addr, sinfo, gfp);
+}
+EXPORT_SYMBOL(cfg80211_new_sta);
+
+struct cfg80211_action_registration {
+ struct list_head list;
+
+ u32 nlpid;
+
+ int match_len;
+
+ u8 match[];
+};
+
+int cfg80211_mlme_register_action(struct wireless_dev *wdev, u32 snd_pid,
+ const u8 *match_data, int match_len)
+{
+ struct cfg80211_action_registration *reg, *nreg;
+ int err = 0;
+
+ nreg = kzalloc(sizeof(*reg) + match_len, GFP_KERNEL);
+ if (!nreg)
+ return -ENOMEM;
+
+ spin_lock_bh(&wdev->action_registrations_lock);
+
+ list_for_each_entry(reg, &wdev->action_registrations, list) {
+ int mlen = min(match_len, reg->match_len);
+
+ if (memcmp(reg->match, match_data, mlen) == 0) {
+ err = -EALREADY;
+ break;
+ }
+ }
+
+ if (err) {
+ kfree(nreg);
+ goto out;
+ }
+
+ memcpy(nreg->match, match_data, match_len);
+ nreg->match_len = match_len;
+ nreg->nlpid = snd_pid;
+ list_add(&nreg->list, &wdev->action_registrations);
+
+ out:
+ spin_unlock_bh(&wdev->action_registrations_lock);
+ return err;
+}
+
+void cfg80211_mlme_unregister_actions(struct wireless_dev *wdev, u32 nlpid)
+{
+ struct cfg80211_action_registration *reg, *tmp;
+
+ spin_lock_bh(&wdev->action_registrations_lock);
+
+ list_for_each_entry_safe(reg, tmp, &wdev->action_registrations, list) {
+ if (reg->nlpid == nlpid) {
+ list_del(®->list);
+ kfree(reg);
+ }
+ }
+
+ spin_unlock_bh(&wdev->action_registrations_lock);
+}
+
+void cfg80211_mlme_purge_actions(struct wireless_dev *wdev)
+{
+ struct cfg80211_action_registration *reg, *tmp;
+
+ spin_lock_bh(&wdev->action_registrations_lock);
+
+ list_for_each_entry_safe(reg, tmp, &wdev->action_registrations, list) {
+ list_del(®->list);
+ kfree(reg);
+ }
+
+ spin_unlock_bh(&wdev->action_registrations_lock);
+}
+
+int cfg80211_mlme_action(struct cfg80211_registered_device *rdev,
+ struct net_device *dev,
+ struct ieee80211_channel *chan,
+ enum nl80211_channel_type channel_type,
+ const u8 *buf, size_t len, u64 *cookie)
+{
+ struct wireless_dev *wdev = dev->ieee80211_ptr;
+ const struct ieee80211_mgmt *mgmt;
+
+ if (rdev->ops->action == NULL)
+ return -EOPNOTSUPP;
+ if (len < 24 + 1)
+ return -EINVAL;
+
+ mgmt = (const struct ieee80211_mgmt *) buf;
+ if (!ieee80211_is_action(mgmt->frame_control))
+ return -EINVAL;
+ if (mgmt->u.action.category != WLAN_CATEGORY_PUBLIC) {
+ /* Verify that we are associated with the destination AP */
+ if (!wdev->current_bss ||
+ memcmp(wdev->current_bss->pub.bssid, mgmt->bssid,
+ ETH_ALEN) != 0 ||
+ memcmp(wdev->current_bss->pub.bssid, mgmt->da,
+ ETH_ALEN) != 0)
+ return -ENOTCONN;
+ }
+
+ if (memcmp(mgmt->sa, dev->dev_addr, ETH_ALEN) != 0)
+ return -EINVAL;
+
+ /* Transmit the Action frame as requested by user space */
+ return rdev->ops->action(&rdev->wiphy, dev, chan, channel_type,
+ buf, len, cookie);
+}
+
+bool cfg80211_rx_action(struct net_device *dev, int freq, const u8 *buf,
+ size_t len, gfp_t gfp)
+{
+ struct wireless_dev *wdev = dev->ieee80211_ptr;
+ struct wiphy *wiphy = wdev->wiphy;
+ struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
+ struct cfg80211_action_registration *reg;
+ const u8 *action_data;
+ int action_data_len;
+ bool result = false;
+
+ /* frame length - min size excluding category */
+ action_data_len = len - (IEEE80211_MIN_ACTION_SIZE - 1);
+
+ /* action data starts with category */
+ action_data = buf + IEEE80211_MIN_ACTION_SIZE - 1;
+
+ spin_lock_bh(&wdev->action_registrations_lock);
+
+ list_for_each_entry(reg, &wdev->action_registrations, list) {
+ if (reg->match_len > action_data_len)
+ continue;
+
+ if (memcmp(reg->match, action_data, reg->match_len))
+ continue;
+
+ /* found match! */
+
+ /* Indicate the received Action frame to user space */
+ if (nl80211_send_action(rdev, dev, reg->nlpid, freq,
+ buf, len, gfp))
+ continue;
+
+ result = true;
+ break;
+ }
+
+ spin_unlock_bh(&wdev->action_registrations_lock);
+
+ return result;
+}
+EXPORT_SYMBOL(cfg80211_rx_action);
+
+void cfg80211_action_tx_status(struct net_device *dev, u64 cookie,
+ const u8 *buf, size_t len, bool ack, gfp_t gfp)
+{
+ struct wireless_dev *wdev = dev->ieee80211_ptr;
+ struct wiphy *wiphy = wdev->wiphy;
+ struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
+
+ /* Indicate TX status of the Action frame to user space */
+ nl80211_send_action_tx_status(rdev, dev, cookie, buf, len, ack, gfp);
+}
+EXPORT_SYMBOL(cfg80211_action_tx_status);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff