68a526cb76234af06d3684304172c559ae23e875
[openwrt/openwrt.git] / package / mac80211 / src / 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
26 if (buf) {
27 /* TODO: needed parameters: count, key type, TSC */
28 sprintf(buf, "MLME-MICHAELMICFAILURE.indication("
29 "keyid=%d %scast addr=" MAC_FMT ")",
30 keyidx, hdr->addr1[0] & 0x01 ? "broad" : "uni",
31 MAC_ARG(hdr->addr2));
32 memset(&wrqu, 0, sizeof(wrqu));
33 wrqu.data.length = strlen(buf);
34 wireless_send_event(dev, IWEVCUSTOM, &wrqu, buf);
35 kfree(buf);
36 }
37
38 /*
39 * TODO: re-add support for sending MIC failure indication
40 * with all info via nl80211
41 */
42 }