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 <net/iw_handler.h>
12 #include "ieee80211_i.h"
13
14 /*
15 * indicate a failed Michael MIC to userspace; the passed packet
16 * (in the variable hdr) must be long enough to extract the TKIP
17 * fields like TSC
18 */
mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data * sdata,int keyidx,struct ieee80211_hdr * hdr)19 void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx,
20 struct ieee80211_hdr *hdr)
21 {
22 union iwreq_data wrqu;
23 char *buf = kmalloc(128, GFP_ATOMIC);
24
25 if (buf) {
26 /* TODO: needed parameters: count, key type, TSC */
27 sprintf(buf, "MLME-MICHAELMICFAILURE.indication("
28 "keyid=%d %scast addr=%pM)",
29 keyidx, hdr->addr1[0] & 0x01 ? "broad" : "uni",
30 hdr->addr2);
31 memset(&wrqu, 0, sizeof(wrqu));
32 wrqu.data.length = strlen(buf);
33 wireless_send_event(sdata->dev, IWEVCUSTOM, &wrqu, buf);
34 kfree(buf);
35 }
36
37 /*
38 * TODO: re-add support for sending MIC failure indication
39 * with all info via nl80211
40 */
41 }
42