C++ (Cpp) mac_cb_is_ackreq Examples

Example #1

File: wpan.c Project: sztony/wink-hub-kernel-public

static int mac802154_header_create(struct sk_buff *skb,
				   struct net_device *dev,
				   unsigned short type,
				   const void *_daddr,
				   const void *_saddr,
				   unsigned len)
{
	const struct ieee802154_addr *saddr = _saddr;
	const struct ieee802154_addr *daddr = _daddr;
	struct ieee802154_addr dev_addr;
	struct mac802154_sub_if_data *priv = netdev_priv(dev);
	int pos = 2;
	u8 head[MAC802154_FRAME_HARD_HEADER_LEN];
	u16 fc;

	if (!daddr)
		return -EINVAL;

	head[pos++] = mac_cb(skb)->seq; /* DSN/BSN */
	fc = mac_cb_type(skb);
	if (mac_cb_is_ackreq(skb))
		fc |= IEEE802154_FC_ACK_REQ;

	if (!saddr) {
		spin_lock_bh(&priv->mib_lock);

		if (priv->short_addr == IEEE802154_ADDR_BROADCAST ||
		    priv->short_addr == IEEE802154_ADDR_UNDEF ||
		    priv->pan_id == IEEE802154_PANID_BROADCAST) {
			dev_addr.addr_type = IEEE802154_ADDR_LONG;
			memcpy(dev_addr.hwaddr, dev->dev_addr,
			       IEEE802154_ADDR_LEN);
		} else {
			dev_addr.addr_type = IEEE802154_ADDR_SHORT;
			dev_addr.short_addr = priv->short_addr;
		}

		dev_addr.pan_id = priv->pan_id;
		saddr = &dev_addr;

		spin_unlock_bh(&priv->mib_lock);
	}

	if (daddr->addr_type != IEEE802154_ADDR_NONE) {
		fc |= (daddr->addr_type << IEEE802154_FC_DAMODE_SHIFT);

		head[pos++] = daddr->pan_id & 0xff;
		head[pos++] = daddr->pan_id >> 8;

		if (daddr->addr_type == IEEE802154_ADDR_SHORT) {
			head[pos++] = daddr->short_addr & 0xff;
			head[pos++] = daddr->short_addr >> 8;
		} else {

Example #2

File: wpan.c Project: 7799/linux

static int mac802154_header_create(struct sk_buff *skb,
				   struct net_device *dev,
				   unsigned short type,
				   const void *daddr,
				   const void *saddr,
				   unsigned len)
{
	struct ieee802154_hdr hdr;
	struct mac802154_sub_if_data *priv = netdev_priv(dev);
	int hlen;

	if (!daddr)
		return -EINVAL;

	memset(&hdr.fc, 0, sizeof(hdr.fc));
	hdr.fc.type = mac_cb_type(skb);
	hdr.fc.security_enabled = mac_cb_is_secen(skb);
	hdr.fc.ack_request = mac_cb_is_ackreq(skb);

	if (!saddr) {
		spin_lock_bh(&priv->mib_lock);

		if (priv->short_addr == cpu_to_le16(IEEE802154_ADDR_BROADCAST) ||
		    priv->short_addr == cpu_to_le16(IEEE802154_ADDR_UNDEF) ||
		    priv->pan_id == cpu_to_le16(IEEE802154_PANID_BROADCAST)) {
			hdr.source.mode = IEEE802154_ADDR_LONG;
			hdr.source.extended_addr = priv->extended_addr;
		} else {
			hdr.source.mode = IEEE802154_ADDR_SHORT;
			hdr.source.short_addr = priv->short_addr;
		}

		hdr.source.pan_id = priv->pan_id;

		spin_unlock_bh(&priv->mib_lock);
	} else {
		hdr.source = *(const struct ieee802154_addr *)saddr;
	}

	hdr.dest = *(const struct ieee802154_addr *)daddr;

	hlen = ieee802154_hdr_push(skb, &hdr);
	if (hlen < 0)
		return -EINVAL;

	skb_reset_mac_header(skb);
	skb->mac_len = hlen;

	if (hlen + len + 2 > dev->mtu)
		return -EMSGSIZE;

	return hlen;
}