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eb063c17 JB |
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); | |
0795af57 | 25 | DECLARE_MAC_BUF(mac); |
eb063c17 JB |
26 | |
27 | if (buf) { | |
28 | /* TODO: needed parameters: count, key type, TSC */ | |
29 | sprintf(buf, "MLME-MICHAELMICFAILURE.indication(" | |
0795af57 | 30 | "keyid=%d %scast addr=%s)", |
eb063c17 | 31 | keyidx, hdr->addr1[0] & 0x01 ? "broad" : "uni", |
0795af57 | 32 | print_mac(mac, hdr->addr2)); |
eb063c17 JB |
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 | } |