hostap_ioctl.c

IEEE 802.11a/b/g linux2.4/2.6 驱动程序源代码

	if (local->func->get_rid(dev, HFA384X_RID_CURRENTTXRATE, &val, 2, 1) <
	    0)
		return -EINVAL;

	switch (val) {
	case HFA384X_RATES_1MBPS:
		rrq->value = 1000000;
		break;
	case HFA384X_RATES_2MBPS:
		rrq->value = 2000000;
		break;
	case HFA384X_RATES_5MBPS:
		rrq->value = 5500000;
		break;
	case HFA384X_RATES_11MBPS:
		rrq->value = 11000000;
		break;
	default:
		/* should not happen */
		rrq->value = 11000000;
		ret = -EINVAL;
		break;
	}

	return ret;
}


static int prism2_ioctl_siwsens(struct net_device *dev,
				struct iw_request_info *info,
				struct iw_param *sens, char *extra)
{
	struct hostap_interface *iface = dev->priv;
	local_info_t *local = iface->local;

	/* Set the desired AP density */
	if (sens->value < 1 || sens->value > 3)
		return -EINVAL;

	if (hostap_set_word(dev, HFA384X_RID_CNFSYSTEMSCALE, sens->value) ||
	    local->func->reset_port(dev))
		return -EINVAL;

	return 0;
}

static int prism2_ioctl_giwsens(struct net_device *dev,
				struct iw_request_info *info,
				struct iw_param *sens, char *extra)
{
	struct hostap_interface *iface = dev->priv;
	local_info_t *local = iface->local;
	u16 val;

	/* Get the current AP density */
	if (local->func->get_rid(dev, HFA384X_RID_CNFSYSTEMSCALE, &val, 2, 1) <
	    0)
		return -EINVAL;

	sens->value = __le16_to_cpu(val);
	sens->fixed = 1;

	return 0;
}


/* Deprecated in new wireless extension API */
static int prism2_ioctl_giwaplist(struct net_device *dev,
				  struct iw_request_info *info,
				  struct iw_point *data, char *extra)
{
	struct hostap_interface *iface = dev->priv;
	local_info_t *local = iface->local;
	struct sockaddr addr[IW_MAX_AP];
	struct iw_quality qual[IW_MAX_AP];

	if (local->iw_mode != IW_MODE_MASTER) {
		printk(KERN_DEBUG "SIOCGIWAPLIST is currently only supported "
		       "in Host AP mode\n");
		data->length = 0;
		return -EOPNOTSUPP;
	}

	data->length = prism2_ap_get_sta_qual(local, addr, qual, IW_MAX_AP, 1);

	memcpy(extra, &addr, sizeof(addr[0]) * data->length);
	data->flags = 1; /* has quality information */
	memcpy(extra + sizeof(addr[0]) * data->length, &qual,
	       sizeof(qual[0]) * data->length);

	return 0;
}


static int prism2_ioctl_siwrts(struct net_device *dev,
			       struct iw_request_info *info,
			       struct iw_param *rts, char *extra)
{
	struct hostap_interface *iface = dev->priv;
	local_info_t *local = iface->local;
	u16 val;

	if (rts->disabled)
		val = __constant_cpu_to_le16(2347);
	else if (rts->value < 0 || rts->value > 2347)
		return -EINVAL;
	else
		val = __cpu_to_le16(rts->value);

	if (local->func->set_rid(dev, HFA384X_RID_RTSTHRESHOLD, &val, 2) ||
	    local->func->reset_port(dev))
		return -EINVAL;

	local->rts_threshold = rts->value;

	return 0;
}

static int prism2_ioctl_giwrts(struct net_device *dev,
			       struct iw_request_info *info,
			       struct iw_param *rts, char *extra)
{
	struct hostap_interface *iface = dev->priv;
	local_info_t *local = iface->local;
	u16 val;

	if (local->func->get_rid(dev, HFA384X_RID_RTSTHRESHOLD, &val, 2, 1) <
	    0)
		return -EINVAL;

	rts->value = __le16_to_cpu(val);
	rts->disabled = (rts->value == 2347);
	rts->fixed = 1;

	return 0;
}


static int prism2_ioctl_siwfrag(struct net_device *dev,
				struct iw_request_info *info,
				struct iw_param *rts, char *extra)
{
	struct hostap_interface *iface = dev->priv;
	local_info_t *local = iface->local;
	u16 val;

	if (rts->disabled)
		val = __constant_cpu_to_le16(2346);
	else if (rts->value < 256 || rts->value > 2346)
		return -EINVAL;
	else
		val = __cpu_to_le16(rts->value & ~0x1); /* even numbers only */

	local->fragm_threshold = rts->value & ~0x1;
	if (local->func->set_rid(dev, HFA384X_RID_FRAGMENTATIONTHRESHOLD, &val,
				 2)
	    || local->func->reset_port(dev))
		return -EINVAL;

	return 0;
}

static int prism2_ioctl_giwfrag(struct net_device *dev,
				struct iw_request_info *info,
				struct iw_param *rts, char *extra)
{
	struct hostap_interface *iface = dev->priv;
	local_info_t *local = iface->local;
	u16 val;

	if (local->func->get_rid(dev, HFA384X_RID_FRAGMENTATIONTHRESHOLD,
				 &val, 2, 1) < 0)
		return -EINVAL;

	rts->value = __le16_to_cpu(val);
	rts->disabled = (rts->value == 2346);
	rts->fixed = 1;

	return 0;
}


#ifndef PRISM2_NO_STATION_MODES
static int hostap_join_ap(struct net_device *dev)
{
	struct hostap_interface *iface = dev->priv;
	local_info_t *local = iface->local;
	struct hfa384x_join_request req;
	unsigned long flags;
	int i;
	struct hfa384x_hostscan_result *entry;

	memcpy(req.bssid, local->preferred_ap, ETH_ALEN);
	req.channel = 0;

	spin_lock_irqsave(&local->lock, flags);
	for (i = 0; i < local->last_scan_results_count; i++) {
		if (!local->last_scan_results)
			break;
		entry = &local->last_scan_results[i];
		if (memcmp(local->preferred_ap, entry->bssid, ETH_ALEN) == 0) {
			req.channel = entry->chid;
			break;
		}
	}
	spin_unlock_irqrestore(&local->lock, flags);

	if (local->func->set_rid(dev, HFA384X_RID_JOINREQUEST, &req,
				 sizeof(req))) {
		printk(KERN_DEBUG "%s: JoinRequest " MACSTR
		       " failed\n",
		       dev->name, MAC2STR(local->preferred_ap));
		return -1;
	}

	printk(KERN_DEBUG "%s: Trying to join BSSID " MACSTR "\n",
	       dev->name, MAC2STR(local->preferred_ap));

	return 0;
}
#endif /* PRISM2_NO_STATION_MODES */


static int prism2_ioctl_siwap(struct net_device *dev,
			      struct iw_request_info *info,
			      struct sockaddr *ap_addr, char *extra)
{
#ifdef PRISM2_NO_STATION_MODES
	return -EOPNOTSUPP;
#else /* PRISM2_NO_STATION_MODES */
	struct hostap_interface *iface = dev->priv;
	local_info_t *local = iface->local;

	memcpy(local->preferred_ap, &ap_addr->sa_data, ETH_ALEN);

	if (local->host_roaming == 1 && local->iw_mode == IW_MODE_INFRA) {
		struct hfa384x_scan_request scan_req;
		memset(&scan_req, 0, sizeof(scan_req));
		scan_req.channel_list = __constant_cpu_to_le16(0x3fff);
		scan_req.txrate = __constant_cpu_to_le16(HFA384X_RATES_1MBPS);
		if (local->func->set_rid(dev, HFA384X_RID_SCANREQUEST,
					 &scan_req, sizeof(scan_req))) {
			printk(KERN_DEBUG "%s: ScanResults request failed - "
			       "preferred AP delayed to next unsolicited "
			       "scan\n", dev->name);
		}
	} else if (local->host_roaming == 2 &&
		   local->iw_mode == IW_MODE_INFRA) {
		if (hostap_join_ap(dev))
			return -EINVAL;
	} else {
		printk(KERN_DEBUG "%s: Preferred AP (SIOCSIWAP) is used only "
		       "in Managed mode when host_roaming is enabled\n",
		       dev->name);
	}

	return 0;
#endif /* PRISM2_NO_STATION_MODES */
}

static int prism2_ioctl_giwap(struct net_device *dev,
			      struct iw_request_info *info,
			      struct sockaddr *ap_addr, char *extra)
{
	struct hostap_interface *iface = dev->priv;
	local_info_t *local = iface->local;

	ap_addr->sa_family = ARPHRD_ETHER;
	switch (iface->type) {
	case HOSTAP_INTERFACE_AP:
		memcpy(&ap_addr->sa_data, dev->dev_addr, ETH_ALEN);
		break;
	case HOSTAP_INTERFACE_STA:
		memcpy(&ap_addr->sa_data, local->assoc_ap_addr, ETH_ALEN);
		break;
	case HOSTAP_INTERFACE_WDS:
		memcpy(&ap_addr->sa_data, iface->u.wds.remote_addr, ETH_ALEN);
		break;
	default:
		if (local->func->get_rid(dev, HFA384X_RID_CURRENTBSSID,
					 &ap_addr->sa_data, ETH_ALEN, 1) < 0)
			return -EOPNOTSUPP;

		/* local->bssid is also updated in LinkStatus handler when in
		 * station mode */
		memcpy(local->bssid, &ap_addr->sa_data, ETH_ALEN);
		break;
	}

	return 0;
}


static int prism2_ioctl_siwnickn(struct net_device *dev,
				 struct iw_request_info *info,
				 struct iw_point *data, char *nickname)
{
	struct hostap_interface *iface = dev->priv;
	local_info_t *local = iface->local;

	memset(local->name, 0, sizeof(local->name));
	memcpy(local->name, nickname, data->length);
	local->name_set = 1;

	if (hostap_set_string(dev, HFA384X_RID_CNFOWNNAME, local->name) ||
	    local->func->reset_port(dev))
		return -EINVAL;

	return 0;
}

static int prism2_ioctl_giwnickn(struct net_device *dev,
				 struct iw_request_info *info,
				 struct iw_point *data, char *nickname)
{
	struct hostap_interface *iface = dev->priv;
	local_info_t *local = iface->local;
	int len;
	char name[MAX_NAME_LEN + 3];
	u16 val;

	len = local->func->get_rid(dev, HFA384X_RID_CNFOWNNAME,
				   &name, MAX_NAME_LEN + 2, 0);
	val = __le16_to_cpu(*(u16 *) name);
	if (len > MAX_NAME_LEN + 2 || len < 0 || val > MAX_NAME_LEN)
		return -EOPNOTSUPP;

	name[val + 2] = '\0';
	data->length = val + 1;
	memcpy(nickname, name + 2, val + 1);

	return 0;
}


static int prism2_ioctl_siwfreq(struct net_device *dev,
				struct iw_request_info *info,
				struct iw_freq *freq, char *extra)
{
	struct hostap_interface *iface = dev->priv;
	local_info_t *local = iface->local;

	/* freq => chan. */
	if (freq->e == 1 &&
	    freq->m / 100000 >= freq_list[0] &&
	    freq->m / 100000 <= freq_list[FREQ_COUNT - 1]) {
		int ch;
		int fr = freq->m / 100000;
		for (ch = 0; ch < FREQ_COUNT; ch++) {
			if (fr == freq_list[ch]) {
				freq->e = 0;
				freq->m = ch + 1;
				break;
			}
		}
	}

	if (freq->e != 0 || freq->m < 1 || freq->m > FREQ_COUNT ||
	    !(local->channel_mask & (1 << (freq->m - 1))))
		return -EINVAL;

	local->channel = freq->m; /* channel is used in prism2_setup_rids() */
	if (hostap_set_word(dev, HFA384X_RID_CNFOWNCHANNEL, local->channel) ||
	    local->func->reset_port(dev))
		return -EINVAL;

	return 0;
}

static int prism2_ioctl_giwfreq(struct net_device *dev,
				struct iw_request_info *info,
				struct iw_freq *freq, char *extra)
{
	struct hostap_interface *iface = dev->priv;
	local_info_t *local = iface->local;
	u16 val;

	if (local->func->get_rid(dev, HFA384X_RID_CURRENTCHANNEL, &val, 2, 1) <
	    0)
		return -EINVAL;

	le16_to_cpus(&val);
	if (val < 1 || val > FREQ_COUNT)
		return -EINVAL;

	freq->m = freq_list[val - 1] * 100000;
	freq->e = 1;

	return 0;
}


static void hostap_monitor_set_type(local_info_t *local)
{
	struct net_device *dev = local->ddev;

	if (dev == NULL)
		return;

	if (local->monitor_type == PRISM2_MONITOR_PRISM ||
	    local->monitor_type == PRISM2_MONITOR_CAPHDR) {
		dev->type = ARPHRD_IEEE80211_PRISM;
		dev->hard_header_parse =
			hostap_80211_prism_header_parse;
	} else {
		dev->type = ARPHRD_IEEE80211;
		dev->hard_header_parse = hostap_80211_header_parse;
	}
}


static int prism2_ioctl_siwessid(struct net_device *dev,
				 struct iw_request_info *info,
				 struct iw_point *data, char *ssid)
{
	struct hostap_interface *iface = dev->priv;
	local_info_t *local = iface->local;

	if (iface->type == HOSTAP_INTERFACE_WDS)
		return -EOPNOTSUPP;

	if (data->flags == 0)
		ssid[0] = '\0'; /* ANY */

	if (local->iw_mode == IW_MODE_MASTER && ssid[0] == '\0') {
		/* Setting SSID to empty string seems to kill the card in
		 * Host AP mode */
		printk(KERN_DEBUG "%s: Host AP mode does not support "
		       "'Any' essid\n", dev->name);
		return -EINVAL;
	}

	memcpy(local->essid, ssid, data->length);
	local->essid[data->length] = '\0';

	if ((!local->fw_ap &&
	     hostap_set_string(dev, HFA384X_RID_CNFDESIREDSSID, local->essid))
	    || hostap_set_string(dev, HFA384X_RID_CNFOWNSSID, local->essid) ||
	    local->func->reset_port(dev))
		return -EINVAL;

	return 0;
}

static int prism2_ioctl_giwessid(struct net_device *dev,
				 struct iw_request_info *info,
				 struct iw_point *data, char *essid)
{
	struct hostap_interface *iface = dev->priv;
	local_info_t *local = iface->local;
	u16 val;

	if (iface->type == HOSTAP_INTERFACE_WDS)
		return -EOPNOTSUPP;

	data->flags = 1; /* active */
	if (local->iw_mode == IW_MODE_MASTER) {
		data->length = strlen(local->essid);
		memcpy(essid, local->essid, IW_ESSID_MAX_SIZE);
	} else {
		int len;
		char ssid[MAX_SSID_LEN + 2];
		memset(ssid, 0, sizeof(ssid));
		len = local->func->get_rid(dev, HFA384X_RID_CURRENTSSID,
					   &ssid, MAX_SSID_LEN + 2, 0);
		val = __le16_to_cpu(*(u16 *) ssid);
		if (len > MAX_SSID_LEN + 2 || len < 0 || val > MAX_SSID_LEN) {
			return -EOPNOTSUPP;