isl_ioctl.c

来自「Linux Kernel 2.6.9 for OMAP1710」· C语言 代码 · 共 2,270 行 · 第 1/5 页

{
	islpci_private *priv = netdev_priv(ndev);

	return mgt_set_request(priv, DOT11_OID_RTSTHRESH, 0, &vwrq->value);
}

static int
prism54_get_rts(struct net_device *ndev, struct iw_request_info *info,
		struct iw_param *vwrq, char *extra)
{
	islpci_private *priv = netdev_priv(ndev);
	union oid_res_t r;
	int rvalue;

	/* get the rts threshold */
	rvalue = mgt_get_request(priv, DOT11_OID_RTSTHRESH, 0, NULL, &r);
	vwrq->value = r.u;

	return rvalue;
}

static int
prism54_set_frag(struct net_device *ndev, struct iw_request_info *info,
		 struct iw_param *vwrq, char *extra)
{
	islpci_private *priv = netdev_priv(ndev);

	return mgt_set_request(priv, DOT11_OID_FRAGTHRESH, 0, &vwrq->value);
}

static int
prism54_get_frag(struct net_device *ndev, struct iw_request_info *info,
		 struct iw_param *vwrq, char *extra)
{
	islpci_private *priv = netdev_priv(ndev);
	union oid_res_t r;
	int rvalue;

	rvalue = mgt_get_request(priv, DOT11_OID_FRAGTHRESH, 0, NULL, &r);
	vwrq->value = r.u;

	return rvalue;
}

/* Here we have (min,max) = max retries for (small frames, big frames). Where
 * big frame <=>  bigger than the rts threshold
 * small frame <=>  smaller than the rts threshold
 * This is not really the behavior expected by the wireless tool but it seems
 * to be a common behavior in other drivers.
 */

static int
prism54_set_retry(struct net_device *ndev, struct iw_request_info *info,
		  struct iw_param *vwrq, char *extra)
{
	islpci_private *priv = netdev_priv(ndev);
	u32 slimit = 0, llimit = 0;	/* short and long limit */
	u32 lifetime = 0;
	int rvalue = 0;

	if (vwrq->disabled)
		/* we cannot disable this feature */
		return -EINVAL;

	if (vwrq->flags & IW_RETRY_LIMIT) {
		if (vwrq->flags & IW_RETRY_MIN)
			slimit = vwrq->value;
		else if (vwrq->flags & IW_RETRY_MAX)
			llimit = vwrq->value;
		else {
			/* we are asked to set both */
			slimit = vwrq->value;
			llimit = vwrq->value;
		}
	}
	if (vwrq->flags & IW_RETRY_LIFETIME)
		/* Wireless tools use us unit while the device uses 1024 us unit */
		lifetime = vwrq->value / 1024;

	/* now set what is requested */
	if (slimit)
		rvalue =
		    mgt_set_request(priv, DOT11_OID_SHORTRETRIES, 0, &slimit);
	if (llimit)
		rvalue |=
		    mgt_set_request(priv, DOT11_OID_LONGRETRIES, 0, &llimit);
	if (lifetime)
		rvalue |=
		    mgt_set_request(priv, DOT11_OID_MAXTXLIFETIME, 0,
				    &lifetime);
	return rvalue;
}

static int
prism54_get_retry(struct net_device *ndev, struct iw_request_info *info,
		  struct iw_param *vwrq, char *extra)
{
	islpci_private *priv = netdev_priv(ndev);
	union oid_res_t r;
	int rvalue = 0;
	vwrq->disabled = 0;	/* It cannot be disabled */

	if ((vwrq->flags & IW_RETRY_TYPE) == IW_RETRY_LIFETIME) {
		/* we are asked for the life time */
		rvalue =
		    mgt_get_request(priv, DOT11_OID_MAXTXLIFETIME, 0, NULL, &r);
		vwrq->value = r.u * 1024;
		vwrq->flags = IW_RETRY_LIFETIME;
	} else if ((vwrq->flags & IW_RETRY_MAX)) {
		/* we are asked for the long retry limit */
		rvalue |=
		    mgt_get_request(priv, DOT11_OID_LONGRETRIES, 0, NULL, &r);
		vwrq->value = r.u;
		vwrq->flags = IW_RETRY_LIMIT | IW_RETRY_MAX;
	} else {
		/* default. get the  short retry limit */
		rvalue |=
		    mgt_get_request(priv, DOT11_OID_SHORTRETRIES, 0, NULL, &r);
		vwrq->value = r.u;
		vwrq->flags = IW_RETRY_LIMIT | IW_RETRY_MIN;
	}

	return rvalue;
}

static int
prism54_set_encode(struct net_device *ndev, struct iw_request_info *info,
		   struct iw_point *dwrq, char *extra)
{
	islpci_private *priv = netdev_priv(ndev);
	int rvalue = 0, force = 0;
	int authen = DOT11_AUTH_OS, invoke = 0, exunencrypt = 0;
	union oid_res_t r;

	/* with the new API, it's impossible to get a NULL pointer.
	 * New version of iwconfig set the IW_ENCODE_NOKEY flag
	 * when no key is given, but older versions don't. */

	if (dwrq->length > 0) {
		/* we have a key to set */
		int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
		int current_index;
		struct obj_key key = { DOT11_PRIV_WEP, 0, "" };

		/* get the current key index */
		rvalue = mgt_get_request(priv, DOT11_OID_DEFKEYID, 0, NULL, &r);
		current_index = r.u;
		/* Verify that the key is not marked as invalid */
		if (!(dwrq->flags & IW_ENCODE_NOKEY)) {
			key.length = dwrq->length > sizeof (key.key) ?
			    sizeof (key.key) : dwrq->length;
			memcpy(key.key, extra, key.length);
			if (key.length == 32)
				/* we want WPA-PSK */
				key.type = DOT11_PRIV_TKIP;
			if ((index < 0) || (index > 3))
				/* no index provided use the current one */
				index = current_index;

			/* now send the key to the card  */
			rvalue |=
			    mgt_set_request(priv, DOT11_OID_DEFKEYX, index,
					    &key);
		}
		/*
		 * If a valid key is set, encryption should be enabled 
		 * (user may turn it off later).
		 * This is also how "iwconfig ethX key on" works
		 */
		if ((index == current_index) && (key.length > 0))
			force = 1;
	} else {
		int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
		if ((index >= 0) && (index <= 3)) {
			/* we want to set the key index */
			rvalue |=
			    mgt_set_request(priv, DOT11_OID_DEFKEYID, 0,
					    &index);
		} else {
			if (!dwrq->flags & IW_ENCODE_MODE) {
				/* we cannot do anything. Complain. */
				return -EINVAL;
			}
		}
	}
	/* now read the flags */
	if (dwrq->flags & IW_ENCODE_DISABLED) {
		/* Encoding disabled, 
		 * authen = DOT11_AUTH_OS;
		 * invoke = 0;
		 * exunencrypt = 0; */
	}
	if (dwrq->flags & IW_ENCODE_OPEN)
		/* Encode but accept non-encoded packets. No auth */
		invoke = 1;
	if ((dwrq->flags & IW_ENCODE_RESTRICTED) || force) {
		/* Refuse non-encoded packets. Auth */
		authen = DOT11_AUTH_BOTH;
		invoke = 1;
		exunencrypt = 1;
	}
	/* do the change if requested  */
	if ((dwrq->flags & IW_ENCODE_MODE) || force) {
		rvalue |=
		    mgt_set_request(priv, DOT11_OID_AUTHENABLE, 0, &authen);
		rvalue |=
		    mgt_set_request(priv, DOT11_OID_PRIVACYINVOKED, 0, &invoke);
		rvalue |=
		    mgt_set_request(priv, DOT11_OID_EXUNENCRYPTED, 0,
				    &exunencrypt);
	}
	return rvalue;
}

static int
prism54_get_encode(struct net_device *ndev, struct iw_request_info *info,
		   struct iw_point *dwrq, char *extra)
{
	islpci_private *priv = netdev_priv(ndev);
	struct obj_key *key;
	u32 devindex, index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
	u32 authen = 0, invoke = 0, exunencrypt = 0;
	int rvalue;
	union oid_res_t r;

	/* first get the flags */
	rvalue = mgt_get_request(priv, DOT11_OID_AUTHENABLE, 0, NULL, &r);
	authen = r.u;
	rvalue |= mgt_get_request(priv, DOT11_OID_PRIVACYINVOKED, 0, NULL, &r);
	invoke = r.u;
	rvalue |= mgt_get_request(priv, DOT11_OID_EXUNENCRYPTED, 0, NULL, &r);
	exunencrypt = r.u;

	if (invoke && (authen == DOT11_AUTH_BOTH) && exunencrypt)
		dwrq->flags = IW_ENCODE_RESTRICTED;
	else if ((authen == DOT11_AUTH_OS) && !exunencrypt) {
		if (invoke)
			dwrq->flags = IW_ENCODE_OPEN;
		else
			dwrq->flags = IW_ENCODE_DISABLED;
	} else
		/* The card should not work in this state */
		dwrq->flags = 0;

	/* get the current device key index */
	rvalue |= mgt_get_request(priv, DOT11_OID_DEFKEYID, 0, NULL, &r);
	devindex = r.u;
	/* Now get the key, return it */
	if ((index < 0) || (index > 3))
		/* no index provided, use the current one */
		index = devindex;
	rvalue |= mgt_get_request(priv, DOT11_OID_DEFKEYX, index, NULL, &r);
	key = r.ptr;
	dwrq->length = key->length;
	memcpy(extra, key->key, dwrq->length);
	kfree(key);
	/* return the used key index */
	dwrq->flags |= devindex + 1;

	return rvalue;
}

static int
prism54_get_txpower(struct net_device *ndev, struct iw_request_info *info,
		    struct iw_param *vwrq, char *extra)
{
	islpci_private *priv = netdev_priv(ndev);
	union oid_res_t r;
	int rvalue;

	rvalue = mgt_get_request(priv, OID_INL_OUTPUTPOWER, 0, NULL, &r);
	/* intersil firmware operates in 0.25 dBm (1/4 dBm) */
	vwrq->value = (s32) r.u / 4;
	vwrq->fixed = 1;
	/* radio is not turned of
	 * btw: how is possible to turn off only the radio 
	 */
	vwrq->disabled = 0;

	return rvalue;
}

static int
prism54_set_txpower(struct net_device *ndev, struct iw_request_info *info,
		    struct iw_param *vwrq, char *extra)
{
	islpci_private *priv = netdev_priv(ndev);
	s32 u = vwrq->value;

	/* intersil firmware operates in 0.25 dBm (1/4) */
	u *= 4;
	if (vwrq->disabled) {
		/* don't know how to disable radio */
		printk(KERN_DEBUG
		       "%s: %s() disabling radio is not yet supported.\n",
		       priv->ndev->name, __FUNCTION__);
		return -ENOTSUPP;
	} else if (vwrq->fixed)
		/* currently only fixed value is supported */
		return mgt_set_request(priv, OID_INL_OUTPUTPOWER, 0, &u);
	else {
		printk(KERN_DEBUG
		       "%s: %s() auto power will be implemented later.\n",
		       priv->ndev->name, __FUNCTION__);
		return -ENOTSUPP;
	}
}

static int
prism54_reset(struct net_device *ndev, struct iw_request_info *info,
	      __u32 * uwrq, char *extra)
{
	islpci_reset(netdev_priv(ndev), 0);

	return 0;
}

static int
prism54_get_oid(struct net_device *ndev, struct iw_request_info *info,
		struct iw_point *dwrq, char *extra)
{
	union oid_res_t r;
	int rvalue;
	enum oid_num_t n = dwrq->flags;

	rvalue = mgt_get_request((islpci_private *) ndev->priv, n, 0, NULL, &r);
	dwrq->length = mgt_response_to_str(n, &r, extra);
	if ((isl_oid[n].flags & OID_FLAG_TYPE) != OID_TYPE_U32)
		kfree(r.ptr);
	return rvalue;
}

static int
prism54_set_u32(struct net_device *ndev, struct iw_request_info *info,
		__u32 * uwrq, char *extra)
{
	u32 oid = uwrq[0], u = uwrq[1];

	return mgt_set_request((islpci_private *) ndev->priv, oid, 0, &u);
}

static int
prism54_set_raw(struct net_device *ndev, struct iw_request_info *info,
		struct iw_point *dwrq, char *extra)
{
	u32 oid = dwrq->flags;

	return mgt_set_request((islpci_private *) ndev->priv, oid, 0, extra);
}

void
prism54_acl_init(struct islpci_acl *acl)
{
	sema_init(&acl->sem, 1);
	INIT_LIST_HEAD(&acl->mac_list);
	acl->size = 0;
	acl->policy = MAC_POLICY_OPEN;
}

static void
prism54_clear_mac(struct islpci_acl *acl)
{
	struct list_head *ptr, *next;
	struct mac_entry *entry;

	if (down_interruptible(&acl->sem))
		return;

	if (acl->size == 0) {
		up(&acl->sem);
		return;
	}

	for (ptr = acl->mac_list.next, next = ptr->next;
	     ptr != &acl->mac_list; ptr = next, next = ptr->next) {
		entry = list_entry(ptr, struct mac_entry, _list);
		list_del(ptr);
		kfree(entry);
	}
	acl->size = 0;
	up(&acl->sem);
}

void
prism54_acl_clean(struct islpci_acl *acl)
{
	prism54_clear_mac(acl);
}

static int
prism54_add_mac(struct net_device *ndev, struct iw_request_info *info,
		struct sockaddr *awrq, char *extra)
{
	islpci_private *priv = netdev_priv(ndev);
	struct islpci_acl *acl = &priv->acl;
	struct mac_entry *entry;
	struct sockaddr *addr = (struct sockaddr *) extra;

	if (addr->sa_family != ARPHRD_ETHER)
		return -EOPNOTSUPP;

	entry = kmalloc(sizeof (struct mac_entry), GFP_KERNEL);
	if (entry == NULL)
		return -ENOMEM;

	memcpy(entry->addr, addr->sa_data, ETH_ALEN);

	if (down_interruptible(&acl->sem)) {
		kfree(entry);
		return -ERESTARTSYS;
	}
	list_add_tail(&entry->_list, &acl->mac_list);
	acl->size++;
	up(&acl->sem);

	return 0;
}

static int
prism54_del_mac(struct net_device *ndev, struct iw_request_info *info,
		struct sockaddr *awrq, char *extra)
{
	islpci_private *priv = netdev_priv(ndev);
	struct islpci_acl *acl = &priv->acl;
	struct mac_entry *entry;
	struct list_head *ptr;
	struct sockaddr *addr = (struct sockaddr *) extra;

	if (addr->sa_family != ARPHRD_ETHER)
		return -EOPNOTSUPP;

	if (down_interruptible(&acl->sem))
		return -ERESTARTSYS;
	for (ptr = acl->mac_list.next; ptr != &acl->mac_list; ptr = ptr->next) {
		entry = list_entry(ptr, struct mac_entry, _list);

		if (memcmp(entry->addr, addr->sa_data, ETH_ALEN) == 0) {
			list_del(ptr);
			acl->size--;
			kfree(entry);
			up(&acl->sem);
			return 0;
		}
	}
	up(&acl->sem);
	return -EINVAL;
}

static int
prism54_get_mac(struct net_device *ndev, struct iw_request_info *info,
		struct iw_point *dwrq, char *extra)
{
	islpci_private *priv = netdev_priv(ndev);
	struct islpci_acl *acl = &priv->acl;