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![David Chosrova](/assets/img/avatar_default.png)
This patch removes all the ENABLE_DOT11D ifdefs. It is always defined for driver. DOT11D has to do with regulatory domains. What prompted this patch was a warning message in Sparse. drivers/staging/rtl8192u/r8192U_core.c:247:1: warning: "eqMacAddr" redefined in file included from drivers/staging/rtl8192u/:81:81: drivers/staging/rtl8192u/dot11d.h:35:1: warning: this is the location of the previous definition Now there are no ifdefs around dot11d.h it made no sense to have this second definition, so I removed that macro as well. ( Thanks Dan ;-) ). Acked-by. Dan Carpenter <error27@gmail.com> Signed-off-by: David Chosrova <dada2372@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
221 lines
4.9 KiB
C
221 lines
4.9 KiB
C
//-----------------------------------------------------------------------------
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// File:
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// Dot11d.c
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//
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// Description:
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// Implement 802.11d.
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//
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//-----------------------------------------------------------------------------
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#include "dot11d.h"
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void
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Dot11d_Init(struct ieee80211_device *ieee)
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{
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PRT_DOT11D_INFO pDot11dInfo = GET_DOT11D_INFO(ieee);
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pDot11dInfo->bEnabled = 0;
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pDot11dInfo->State = DOT11D_STATE_NONE;
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pDot11dInfo->CountryIeLen = 0;
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memset(pDot11dInfo->channel_map, 0, MAX_CHANNEL_NUMBER+1);
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memset(pDot11dInfo->MaxTxPwrDbmList, 0xFF, MAX_CHANNEL_NUMBER+1);
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RESET_CIE_WATCHDOG(ieee);
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printk("Dot11d_Init()\n");
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}
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//
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// Description:
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// Reset to the state as we are just entering a regulatory domain.
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//
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void
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Dot11d_Reset(struct ieee80211_device *ieee)
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{
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u32 i;
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PRT_DOT11D_INFO pDot11dInfo = GET_DOT11D_INFO(ieee);
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// Clear old channel map
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memset(pDot11dInfo->channel_map, 0, MAX_CHANNEL_NUMBER+1);
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memset(pDot11dInfo->MaxTxPwrDbmList, 0xFF, MAX_CHANNEL_NUMBER+1);
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// Set new channel map
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for (i=1; i<=11; i++) {
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(pDot11dInfo->channel_map)[i] = 1;
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}
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for (i=12; i<=14; i++) {
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(pDot11dInfo->channel_map)[i] = 2;
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}
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pDot11dInfo->State = DOT11D_STATE_NONE;
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pDot11dInfo->CountryIeLen = 0;
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RESET_CIE_WATCHDOG(ieee);
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//printk("Dot11d_Reset()\n");
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}
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//
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// Description:
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// Update country IE from Beacon or Probe Resopnse
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// and configure PHY for operation in the regulatory domain.
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//
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// TODO:
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// Configure Tx power.
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//
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// Assumption:
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// 1. IS_DOT11D_ENABLE() is TRUE.
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// 2. Input IE is an valid one.
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//
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void
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Dot11d_UpdateCountryIe(
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struct ieee80211_device *dev,
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u8 * pTaddr,
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u16 CoutryIeLen,
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u8 * pCoutryIe
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)
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{
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PRT_DOT11D_INFO pDot11dInfo = GET_DOT11D_INFO(dev);
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u8 i, j, NumTriples, MaxChnlNum;
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PCHNL_TXPOWER_TRIPLE pTriple;
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memset(pDot11dInfo->channel_map, 0, MAX_CHANNEL_NUMBER+1);
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memset(pDot11dInfo->MaxTxPwrDbmList, 0xFF, MAX_CHANNEL_NUMBER+1);
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MaxChnlNum = 0;
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NumTriples = (CoutryIeLen - 3) / 3; // skip 3-byte country string.
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pTriple = (PCHNL_TXPOWER_TRIPLE)(pCoutryIe + 3);
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for(i = 0; i < NumTriples; i++)
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{
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if(MaxChnlNum >= pTriple->FirstChnl)
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{ // It is not in a monotonically increasing order, so stop processing.
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printk("Dot11d_UpdateCountryIe(): Invalid country IE, skip it........1\n");
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return;
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}
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if(MAX_CHANNEL_NUMBER < (pTriple->FirstChnl + pTriple->NumChnls))
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{ // It is not a valid set of channel id, so stop processing.
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printk("Dot11d_UpdateCountryIe(): Invalid country IE, skip it........2\n");
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return;
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}
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for(j = 0 ; j < pTriple->NumChnls; j++)
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{
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pDot11dInfo->channel_map[pTriple->FirstChnl + j] = 1;
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pDot11dInfo->MaxTxPwrDbmList[pTriple->FirstChnl + j] = pTriple->MaxTxPowerInDbm;
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MaxChnlNum = pTriple->FirstChnl + j;
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}
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pTriple = (PCHNL_TXPOWER_TRIPLE)((u8*)pTriple + 3);
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}
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//printk("Dot11d_UpdateCountryIe(): Channel List:\n");
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printk("Channel List:");
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for(i=1; i<= MAX_CHANNEL_NUMBER; i++)
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if(pDot11dInfo->channel_map[i] > 0)
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printk(" %d", i);
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printk("\n");
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UPDATE_CIE_SRC(dev, pTaddr);
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pDot11dInfo->CountryIeLen = CoutryIeLen;
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memcpy(pDot11dInfo->CountryIeBuf, pCoutryIe,CoutryIeLen);
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pDot11dInfo->State = DOT11D_STATE_LEARNED;
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}
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u8
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DOT11D_GetMaxTxPwrInDbm(
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struct ieee80211_device *dev,
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u8 Channel
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)
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{
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PRT_DOT11D_INFO pDot11dInfo = GET_DOT11D_INFO(dev);
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u8 MaxTxPwrInDbm = 255;
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if(MAX_CHANNEL_NUMBER < Channel)
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{
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printk("DOT11D_GetMaxTxPwrInDbm(): Invalid Channel\n");
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return MaxTxPwrInDbm;
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}
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if(pDot11dInfo->channel_map[Channel])
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{
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MaxTxPwrInDbm = pDot11dInfo->MaxTxPwrDbmList[Channel];
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}
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return MaxTxPwrInDbm;
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}
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void
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DOT11D_ScanComplete(
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struct ieee80211_device * dev
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)
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{
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PRT_DOT11D_INFO pDot11dInfo = GET_DOT11D_INFO(dev);
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switch(pDot11dInfo->State)
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{
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case DOT11D_STATE_LEARNED:
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pDot11dInfo->State = DOT11D_STATE_DONE;
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break;
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case DOT11D_STATE_DONE:
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if( GET_CIE_WATCHDOG(dev) == 0 )
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{ // Reset country IE if previous one is gone.
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Dot11d_Reset(dev);
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}
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break;
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case DOT11D_STATE_NONE:
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break;
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}
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}
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int IsLegalChannel(
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struct ieee80211_device * dev,
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u8 channel
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)
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{
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PRT_DOT11D_INFO pDot11dInfo = GET_DOT11D_INFO(dev);
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if(MAX_CHANNEL_NUMBER < channel)
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{
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printk("IsLegalChannel(): Invalid Channel\n");
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return 0;
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}
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if(pDot11dInfo->channel_map[channel] > 0)
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return 1;
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return 0;
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}
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int ToLegalChannel(
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struct ieee80211_device * dev,
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u8 channel
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)
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{
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PRT_DOT11D_INFO pDot11dInfo = GET_DOT11D_INFO(dev);
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u8 default_chn = 0;
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u32 i = 0;
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for (i=1; i<= MAX_CHANNEL_NUMBER; i++)
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{
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if(pDot11dInfo->channel_map[i] > 0)
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{
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default_chn = i;
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break;
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}
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}
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if(MAX_CHANNEL_NUMBER < channel)
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{
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printk("IsLegalChannel(): Invalid Channel\n");
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return default_chn;
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}
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if(pDot11dInfo->channel_map[channel] > 0)
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return channel;
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return default_chn;
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}
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EXPORT_SYMBOL(Dot11d_Init);
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EXPORT_SYMBOL(Dot11d_Reset);
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EXPORT_SYMBOL(Dot11d_UpdateCountryIe);
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EXPORT_SYMBOL(DOT11D_GetMaxTxPwrInDbm);
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EXPORT_SYMBOL(DOT11D_ScanComplete);
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EXPORT_SYMBOL(IsLegalChannel);
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EXPORT_SYMBOL(ToLegalChannel);
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