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authorJohannes Berg <johannes@sipsolutions.net>2007-08-29 01:01:53 +0400
committerDavid S. Miller <davem@sunset.davemloft.net>2007-10-11 03:48:47 +0400
commiteb063c1702a84d58eb4c05a032bbff6f1c29049d (patch)
tree0aa15bc098e6e4ef0c84bc4944250bba971ac3ad /net/mac80211/event.c
parent808718c1477b8350e9e329bf4a35391ac7c7f982 (diff)
downloadlinux-eb063c1702a84d58eb4c05a032bbff6f1c29049d.tar.xz
[MAC80211]: refactor event sending
Create a new file event.c that will contain code to send mac/mlme events to userspace. For now put the Michael MIC failure condition into it and remove sending of that condition via the management interface, hostapd interestingly doesn't do anything when it gets such a packet besides printing a message, it reacts only on the private iwevent. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Acked-by: Michael Wu <flamingice@sourmilk.net> Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/mac80211/event.c')
-rw-r--r--net/mac80211/event.c42
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
+ */
+}