root/net/mac80211/event.c

DEFINITIONS

1. mac80211_ev_michael_mic_failure

/*
 * 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 <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 ieee80211_sub_if_data *sdata, int keyidx,
                                     struct ieee80211_hdr *hdr)
{
        union iwreq_data wrqu;
        char *buf = kmalloc(128, GFP_ATOMIC);
        DECLARE_MAC_BUF(mac);

        if (buf) {
                /* TODO: needed parameters: count, key type, TSC */
                sprintf(buf, "MLME-MICHAELMICFAILURE.indication("
                        "keyid=%d %scast addr=%s)",
                        keyidx, hdr->addr1[0] & 0x01 ? "broad" : "uni",
                        print_mac(mac, hdr->addr2));
                memset(&wrqu, 0, sizeof(wrqu));
                wrqu.data.length = strlen(buf);
                wireless_send_event(sdata->dev, IWEVCUSTOM, &wrqu, buf);
                kfree(buf);
        }

        /*
         * TODO: re-add support for sending MIC failure indication
         * with all info via nl80211
         */
}