1 files changed, 42 insertions, 0 deletions

diff --git a/net/mac80211/event.c b/net/mac80211/event.c
new file mode 100644
index 000000000000..68a526cb7623
--- /dev/null
+++ b/net/mac80211/event.c
@@ -0,0 +1,42 @@
+/*
+ * Copyright 2007       Johannes Berg <johannes@sipsolutions.net>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * mac80211 - events
+ */
+
+#include <linux/netdevice.h>
+#include <net/iw_handler.h>
+#include "ieee80211_i.h"
+
+/*
+ * indicate a failed Michael MIC to userspace; the passed packet
+ * (in the variable hdr) must be long enough to extract the TKIP
+ * fields like TSC
+ */
+void mac80211_ev_michael_mic_failure(struct net_device *dev, int keyidx,
+                                     struct ieee80211_hdr *hdr)
+{
+        union iwreq_data wrqu;
+        char *buf = kmalloc(128, GFP_ATOMIC);
+
+        if (buf) {
+                /* TODO: needed parameters: count, key type, TSC */
+                sprintf(buf, "MLME-MICHAELMICFAILURE.indication("
+                        "keyid=%d %scast addr=" MAC_FMT ")",
+                        keyidx, hdr->addr1[0] & 0x01 ? "broad" : "uni",
+                        MAC_ARG(hdr->addr2));
+                memset(&wrqu, 0, sizeof(wrqu));
+                wrqu.data.length = strlen(buf);
+                wireless_send_event(dev, IWEVCUSTOM, &wrqu, buf);
+                kfree(buf);
+        }
+
+        /*
+         * TODO: re-add support for sending MIC failure indication
+         * with all info via nl80211
+         */
+}