contrib/hostapd-0.5.8/ieee802_11h.c

   1 /*
   2  * hostapd / IEEE 802.11h
   3  * Copyright (c) 2005-2006, Devicescape Software, Inc.
   4  * Copyright (c) 2007, Jouni Malinen <j@w1.fi>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 as
   8  * published by the Free Software Foundation.
   9  *
  10  * Alternatively, this software may be distributed under the terms of BSD
  11  * license.
  12  *
  13  * See README and COPYING for more details.
  14  */
  15
  16 #include "includes.h"
  17
  18 #include "hostapd.h"
  19
  20
  21 int hostapd_check_power_cap(struct hostapd_data *hapd, u8 *power, u8 len)
  22 {
  23         unsigned int max_pwr;
  24
  25         if (len < 2) {
  26                 HOSTAPD_DEBUG(HOSTAPD_DEBUG_MINIMAL,
  27                               "Too short power capability IE\n");
  28                 return -1;
  29         }
  30         max_pwr = power[1];
  31         if (max_pwr > hapd->iface->sta_max_power)
  32                 return -1;
  33         return 0;
  34 }