Merge branch 'for-linus-merged' of master.kernel.org:/home/rmk/linux-2.6-arm
[linux-2.6] / net / mac80211 / event.c
1 /*
2  * Copyright 2007       Johannes Berg <johannes@sipsolutions.net>
3  *
4  * This program is free software; you can redistribute it and/or modify
5  * it under the terms of the GNU General Public License version 2 as
6  * published by the Free Software Foundation.
7  *
8  * mac80211 - events
9  */
10
11 #include <linux/netdevice.h>
12 #include <net/iw_handler.h>
13 #include "ieee80211_i.h"
14
15 /*
16  * indicate a failed Michael MIC to userspace; the passed packet
17  * (in the variable hdr) must be long enough to extract the TKIP
18  * fields like TSC
19  */
20 void mac80211_ev_michael_mic_failure(struct net_device *dev, int keyidx,
21                                      struct ieee80211_hdr *hdr)
22 {
23         union iwreq_data wrqu;
24         char *buf = kmalloc(128, GFP_ATOMIC);
25         DECLARE_MAC_BUF(mac);
26
27         if (buf) {
28                 /* TODO: needed parameters: count, key type, TSC */
29                 sprintf(buf, "MLME-MICHAELMICFAILURE.indication("
30                         "keyid=%d %scast addr=%s)",
31                         keyidx, hdr->addr1[0] & 0x01 ? "broad" : "uni",
32                         print_mac(mac, hdr->addr2));
33                 memset(&wrqu, 0, sizeof(wrqu));
34                 wrqu.data.length = strlen(buf);
35                 wireless_send_event(dev, IWEVCUSTOM, &wrqu, buf);
36                 kfree(buf);
37         }
38
39         /*
40          * TODO: re-add support for sending MIC failure indication
41          * with all info via nl80211
42          */
43 }