drivers/net/wireless/iwlwifi/iwl-agn-hcmd-check.c

   1 /******************************************************************************
   2  *
   3  * GPL LICENSE SUMMARY
   4  *
   5  * Copyright(c) 2008 Intel Corporation. All rights reserved.
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of version 2 of the GNU General Public License as
   9  * published by the Free Software Foundation.
  10  *
  11  * This program is distributed in the hope that it will be useful, but
  12  * WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
  19  * USA
  20  *
  21  * The full GNU General Public License is included in this distribution
  22  * in the file called LICENSE.GPL.
  23  *
  24  * Contact Information:
  25  * Tomas Winkler <tomas.winkler@intel.com>
  26  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  27  *****************************************************************************/
  28
  29 #include <linux/kernel.h>
  30 #include <net/mac80211.h>
  31 #include "iwl-dev.h"
  32 #include "iwl-debug.h"
  33 #include "iwl-commands.h"
  34
  35
  36 /**
  37  * iwl_check_rxon_cmd - validate RXON structure is valid
  38  *
  39  * NOTE:  This is really only useful during development and can eventually
  40  * be #ifdef'd out once the driver is stable and folks aren't actively
  41  * making changes
  42  */
  43 int iwl_agn_check_rxon_cmd(struct iwl_rxon_cmd *rxon)
  44 {
  45         int error = 0;
  46         int counter = 1;
  47
  48         if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
  49                 error |= le32_to_cpu(rxon->flags &
  50                                 (RXON_FLG_TGJ_NARROW_BAND_MSK |
  51                                  RXON_FLG_RADAR_DETECT_MSK));
  52                 if (error)
  53                         IWL_WARNING("check 24G fields %d | %d\n",
  54                                     counter++, error);
  55         } else {
  56                 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
  57                                 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
  58                 if (error)
  59                         IWL_WARNING("check 52 fields %d | %d\n",
  60                                     counter++, error);
  61                 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
  62                 if (error)
  63                         IWL_WARNING("check 52 CCK %d | %d\n",
  64                                     counter++, error);
  65         }
  66         error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
  67         if (error)
  68                 IWL_WARNING("check mac addr %d | %d\n", counter++, error);
  69
  70         /* make sure basic rates 6Mbps and 1Mbps are supported */
  71         error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
  72                   ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
  73         if (error)
  74                 IWL_WARNING("check basic rate %d | %d\n", counter++, error);
  75
  76         error |= (le16_to_cpu(rxon->assoc_id) > 2007);
  77         if (error)
  78                 IWL_WARNING("check assoc id %d | %d\n", counter++, error);
  79
  80         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
  81                         == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
  82         if (error)
  83                 IWL_WARNING("check CCK and short slot %d | %d\n",
  84                             counter++, error);
  85
  86         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
  87                         == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
  88         if (error)
  89                 IWL_WARNING("check CCK & auto detect %d | %d\n",
  90                             counter++, error);
  91
  92         error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
  93                         RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
  94         if (error)
  95                 IWL_WARNING("check TGG and auto detect %d | %d\n",
  96                             counter++, error);
  97
  98         if (error)
  99                 IWL_WARNING("Tuning to channel %d\n",
 100                             le16_to_cpu(rxon->channel));
 101
 102         if (error) {
 103                 IWL_ERROR("Not a valid iwl4965_rxon_assoc_cmd field values\n");
 104                 return -1;
 105         }
 106         return 0;
 107 }
 108