atmel.c

linux-2.4.29操作系统的源码

	} else {
		priv->auto_tx_rate = 0;
		
		/* Which type of value ? */
		if((vwrq->value < 4) && (vwrq->value >= 0)) {
			/* Setting by rate index */
		priv->tx_rate = vwrq->value;
		} else {
		/* Setting by frequency value */
			switch (vwrq->value) {
			case (int)1e6: priv->tx_rate = 0; break;
			case (int)2e6: priv->tx_rate = 1; break;
			case (int)5.5e6: priv->tx_rate = 2; break;
			case (int)11e6:  priv->tx_rate = 3; break;
			default: return -EINVAL;
			}
		}
	}

	return -EINPROGRESS;
}

static int atmel_set_mode(struct net_device *dev,
			  struct iw_request_info *info,
			  __u32 *uwrq,
			  char *extra)
{
	struct atmel_private *priv = dev->priv;

	if (*uwrq != IW_MODE_ADHOC && *uwrq != IW_MODE_INFRA)
		return -EINVAL;

	priv->operating_mode = *uwrq;
	return -EINPROGRESS;  
}

static int atmel_get_mode(struct net_device *dev,
			  struct iw_request_info *info,
			  __u32 *uwrq,
			  char *extra)
{
	struct atmel_private *priv = dev->priv;
	
	*uwrq = priv->operating_mode;
	return 0;
}

static int atmel_get_rate(struct net_device *dev,
			 struct iw_request_info *info,
			 struct iw_param *vwrq,
			 char *extra)
{
	struct atmel_private *priv = dev->priv;

	if (priv->auto_tx_rate) {
		vwrq->fixed = 0;
		vwrq->value = 11e6;
	} else {
		vwrq->fixed = 1;
		switch(priv->tx_rate) {
		case 0: vwrq->value = 1e6; break;
		case 1: vwrq->value = 2e6; break;
		case 2: vwrq->value = 5.5e6; break;
		case 3: vwrq->value = 11e6; break;
		}
	}
	return 0;
}

static int atmel_set_power(struct net_device *dev,
			   struct iw_request_info *info,
			   struct iw_param *vwrq,
			   char *extra)
{
	struct atmel_private *priv = dev->priv;
	priv->power_mode = vwrq->disabled ? 0 : 1;
	return -EINPROGRESS;
}

static int atmel_get_power(struct net_device *dev,
			   struct iw_request_info *info,
			   struct iw_param *vwrq,
			   char *extra)
{
	struct atmel_private *priv = dev->priv;
	vwrq->disabled = priv->power_mode ? 0 : 1;
	vwrq->flags = IW_POWER_ON;
	return 0;
}

static int atmel_set_retry(struct net_device *dev,
			   struct iw_request_info *info,
			   struct iw_param *vwrq,
			   char *extra)
{
	struct atmel_private *priv = dev->priv;
	
	if(!vwrq->disabled && (vwrq->flags & IW_RETRY_LIMIT)) {
		if(vwrq->flags & IW_RETRY_MAX)
			priv->long_retry = vwrq->value;
		else if (vwrq->flags & IW_RETRY_MIN)
			priv->short_retry = vwrq->value;
		else {
			/* No modifier : set both */
			priv->long_retry = vwrq->value;
			priv->short_retry = vwrq->value;
		}
		return -EINPROGRESS;		
	}
	   
	return -EINVAL;
}

static int atmel_get_retry(struct net_device *dev,
			   struct iw_request_info *info,
			   struct iw_param *vwrq,
			   char *extra)
{
	struct atmel_private *priv = dev->priv;

	vwrq->disabled = 0;      /* Can't be disabled */

	/* Note : by default, display the min retry number */
	if((vwrq->flags & IW_RETRY_MAX)) {
		vwrq->flags = IW_RETRY_LIMIT | IW_RETRY_MAX;
		vwrq->value = priv->long_retry;
	} else {
		vwrq->flags = IW_RETRY_LIMIT;
		vwrq->value = priv->short_retry;
		if(priv->long_retry != priv->short_retry)
			vwrq->flags |= IW_RETRY_MIN;
	}

	return 0;
}

static int atmel_set_rts(struct net_device *dev,
			 struct iw_request_info *info,
			 struct iw_param *vwrq,
			 char *extra)
{
	struct atmel_private *priv = dev->priv;
	int rthr = vwrq->value;

	if(vwrq->disabled)
		rthr = 2347;
	if((rthr < 0) || (rthr > 2347)) {
		return -EINVAL;
	}
	priv->rts_threshold = rthr;
	
	return -EINPROGRESS;		/* Call commit handler */
}

static int atmel_get_rts(struct net_device *dev,
			 struct iw_request_info *info,
			 struct iw_param *vwrq,
			 char *extra)
{
	struct atmel_private *priv = dev->priv;
	
	vwrq->value = priv->rts_threshold;
	vwrq->disabled = (vwrq->value >= 2347);
	vwrq->fixed = 1;

	return 0;
}

static int atmel_set_frag(struct net_device *dev,
			  struct iw_request_info *info,
			  struct iw_param *vwrq,
			  char *extra)
{
	struct atmel_private *priv = dev->priv;
	int fthr = vwrq->value;

	if(vwrq->disabled)
		fthr = 2346;
	if((fthr < 256) || (fthr > 2346)) {
		return -EINVAL;
	}
	fthr &= ~0x1;	/* Get an even value - is it really needed ??? */
	priv->frag_threshold = fthr;
	
	return -EINPROGRESS;		/* Call commit handler */
}

static int atmel_get_frag(struct net_device *dev,
			  struct iw_request_info *info,
			  struct iw_param *vwrq,
			  char *extra)
{
	struct atmel_private *priv = dev->priv;

	vwrq->value = priv->frag_threshold;
	vwrq->disabled = (vwrq->value >= 2346);
	vwrq->fixed = 1;

	return 0;
}

static const long frequency_list[] = { 2412, 2417, 2422, 2427, 2432, 2437, 2442,
				2447, 2452, 2457, 2462, 2467, 2472, 2484 };

static int atmel_set_freq(struct net_device *dev,
			  struct iw_request_info *info,
			  struct iw_freq *fwrq,
			  char *extra)
{
	struct atmel_private *priv = dev->priv;
	int rc = -EINPROGRESS;		/* Call commit handler */
	
	/* If setting by frequency, convert to a channel */
	if((fwrq->e == 1) &&
	   (fwrq->m >= (int) 2.412e8) &&
	   (fwrq->m <= (int) 2.487e8)) {
		int f = fwrq->m / 100000;
		int c = 0;
		while((c < 14) && (f != frequency_list[c]))
			c++;
		/* Hack to fall through... */
		fwrq->e = 0;
		fwrq->m = c + 1;
	}
	/* Setting by channel number */
	if((fwrq->m > 1000) || (fwrq->e > 0))
		rc = -EOPNOTSUPP;
	else {
		int channel = fwrq->m;
		if (atmel_validate_channel(priv, channel) == 0) {
			priv->channel = channel;
		} else {
			rc = -EINVAL;
		} 
	}
	return rc;
}

static int atmel_get_freq(struct net_device *dev,
			  struct iw_request_info *info,
			  struct iw_freq *fwrq,
			  char *extra)
{
	struct atmel_private *priv = dev->priv;

	fwrq->m = priv->channel;
	fwrq->e = 0;
	return 0;
}

static int atmel_set_scan(struct net_device *dev,
			  struct iw_request_info *info,
			  struct iw_param *vwrq,
			  char *extra)
{
	struct atmel_private *priv = dev->priv;

	/* Note : you may have realised that, as this is a SET operation,
	 * this is privileged and therefore a normal user can't
	 * perform scanning.
	 * This is not an error, while the device perform scanning,
	 * traffic doesn't flow, so it's a perfect DoS...
	 * Jean II */
	
	if (priv->station_state == STATION_STATE_DOWN ||
	    priv->station_state == STATION_STATE_NO_CARD)
		return -EAGAIN;

	/* Timeout old surveys. */
	if ((jiffies - priv->last_survey) > (20 * HZ))
		priv->site_survey_state = SITE_SURVEY_IDLE;
	priv->last_survey = jiffies;

	/* Initiate a scan command */
	if (priv->site_survey_state == SITE_SURVEY_IN_PROGRESS)
		return -EBUSY;
	
	priv->site_survey_state = SITE_SURVEY_IN_PROGRESS;
	
	atmel_clear_gcr(dev, GCR_ENINT); /* disable interrupts */
	del_timer_sync(&priv->management_timer);
	atmel_scan(priv, 0);
	atmel_set_gcr(dev, GCR_ENINT); /* enable interrupts */
	
	return 0;
}

static int atmel_get_scan(struct net_device *dev,
			  struct iw_request_info *info,
			  struct iw_point *dwrq,
			  char *extra)
{
	struct atmel_private *priv = dev->priv;
	int i;
	char *current_ev = extra;
	struct iw_event	iwe;
	
	if (priv->site_survey_state != SITE_SURVEY_COMPLETED)
		return -EAGAIN;
	
	for(i=0; i<priv->BSS_list_entries; i++) { 
		iwe.cmd = SIOCGIWAP;
		iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
		memcpy(iwe.u.ap_addr.sa_data, priv->BSSinfo[i].BSSID, 6);
		current_ev = iwe_stream_add_event(current_ev, extra + IW_SCAN_MAX_DATA, &iwe, IW_EV_ADDR_LEN);

		iwe.u.data.length =  priv->BSSinfo[i].SSIDsize;
		if (iwe.u.data.length > 32)
			iwe.u.data.length = 32;
		iwe.cmd = SIOCGIWESSID;
		iwe.u.data.flags = 1;
		current_ev = iwe_stream_add_point(current_ev, extra + IW_SCAN_MAX_DATA, &iwe, priv->BSSinfo[i].SSID);
		
		iwe.cmd = SIOCGIWMODE;
		iwe.u.mode = priv->BSSinfo[i].BSStype;
		current_ev = iwe_stream_add_event(current_ev, extra + IW_SCAN_MAX_DATA, &iwe, IW_EV_UINT_LEN);
	
		iwe.cmd = SIOCGIWFREQ;
		iwe.u.freq.m = priv->BSSinfo[i].channel;
		iwe.u.freq.e = 0;
		current_ev = iwe_stream_add_event(current_ev, extra + IW_SCAN_MAX_DATA, &iwe, IW_EV_FREQ_LEN);
		
		iwe.cmd = SIOCGIWENCODE;
		if (priv->BSSinfo[i].UsingWEP)
			iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY;
		else
			iwe.u.data.flags = IW_ENCODE_DISABLED;
		iwe.u.data.length = 0;
		current_ev = iwe_stream_add_point(current_ev, extra + IW_SCAN_MAX_DATA, &iwe, NULL);
		
	}

	/* Length of data */
	dwrq->length = (current_ev - extra);
	dwrq->flags = 0;	/* todo */
	
	return 0;
}

static int atmel_get_range(struct net_device *dev,
			   struct iw_request_info *info,
			   struct iw_point *dwrq,
			   char *extra)
{
	struct atmel_private *priv = dev->priv;
	struct iw_range *range = (struct iw_range *) extra;
	int k,i,j;

	dwrq->length = sizeof(struct iw_range);
	memset(range, 0, sizeof(range));
	range->min_nwid = 0x0000;
	range->max_nwid = 0x0000;
	range->num_channels = 0;
	for (j = 0; j < sizeof(channel_table)/sizeof(channel_table[0]); j++)
		if (priv->reg_domain == channel_table[j].reg_domain) {
			range->num_channels = channel_table[j].max - channel_table[j].min + 1;
			break;
		}
	if (range->num_channels != 0) {
		for(k = 0, i = channel_table[j].min; i <= channel_table[j].max; i++) {
			range->freq[k].i = i; /* List index */
			range->freq[k].m = frequency_list[i-1] * 100000;
			range->freq[k++].e = 1;	/* Values in table in MHz -> * 10^5 * 10 */
		}
		range->num_frequency = k;
	}
	
	range->max_qual.qual = 100;
	range->max_qual.level = 100;
	range->max_qual.noise = 0;
	range->sensitivity = 0;

	range->bitrate[0] = 1e6;
	range->bitrate[1] = 2e6;
	range->bitrate[2] = 5.5e6;
	range->bitrate[3] = 11e6;
	range->num_bitrates = 4;

	range->min_rts = 0;
	range->max_rts = 2347;
	range->min_frag = 256;
	range->max_frag = 2346;

	range->encoding_size[0] = 5;
	range->encoding_size[1] = 13;
	range->num_encoding_sizes = 2;
	range->max_encoding_tokens = 4;
	
	range->pmp_flags = IW_POWER_ON;
	range->pmt_flags = IW_POWER_ON;
	range->pm_capa = 0;
	
	range->we_version_source = WIRELESS_EXT;
	range->we_version_compiled = WIRELESS_EXT;
	range->retry_capa = IW_RETRY_LIMIT ;
	range->retry_flags = IW_RETRY_LIMIT;
	range->r_time_flags = 0;
	range->min_retry = 1;
	range->max_retry = 65535;
	range->avg_qual.qual = 50;
	range->avg_qual.level = 50;
	range->avg_qual.noise = 0;

	return 0;
}

static int atmel_set_wap(struct net_device *dev,
			 struct iw_request_info *info,
			 struct sockaddr *awrq,
			 char *extra)
{
	struct atmel_private *priv = dev->priv;
	int i;
	static const u8 bcast[] = { 255, 255, 255, 255, 255, 255 };
	
	if (awrq->sa_family != ARPHRD_ETHER)
		return -EINVAL;
	
	if (memcmp(bcast, awrq->sa_data, 6) == 0) {
		atmel_clear_g