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Diffstat (limited to 'net/wireless/mlme.c')
-rw-r--r--net/wireless/mlme.c166
1 files changed, 166 insertions, 0 deletions
diff --git a/net/wireless/mlme.c b/net/wireless/mlme.c
index 94d151f6f73..62bc8855e12 100644
--- a/net/wireless/mlme.c
+++ b/net/wireless/mlme.c
@@ -728,3 +728,169 @@ void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
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(&reg->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(&reg->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);