Пример #1
0
/* According to comments in the declaration of struct net_device, this function
 * is "Called from unregister, can be used to call free_netdev". Ok then...
 */
static void hsr_dev_destroy(struct net_device *hsr_dev)
{
	struct hsr_priv *hsr;
	struct hsr_port *port;

	hsr = netdev_priv(hsr_dev);

	rtnl_lock();
	hsr_for_each_port(hsr, port)
		hsr_del_port(port);
	rtnl_unlock();

	del_timer_sync(&hsr->prune_timer);
	del_timer_sync(&hsr->announce_timer);

	synchronize_rcu();
}
Пример #2
0
int hsr_dev_finalize(struct net_device *hsr_dev, struct net_device *slave[2],
		     unsigned char multicast_spec, u8 protocol_version)
{
	struct hsr_priv *hsr;
	struct hsr_port *port;
	int res;

	hsr = netdev_priv(hsr_dev);
	INIT_LIST_HEAD(&hsr->ports);
	INIT_LIST_HEAD(&hsr->node_db);
	INIT_LIST_HEAD(&hsr->self_node_db);

	ether_addr_copy(hsr_dev->dev_addr, slave[0]->dev_addr);

	/* Make sure we recognize frames from ourselves in hsr_rcv() */
	res = hsr_create_self_node(&hsr->self_node_db, hsr_dev->dev_addr,
				   slave[1]->dev_addr);
	if (res < 0)
		return res;

	spin_lock_init(&hsr->seqnr_lock);
	/* Overflow soon to find bugs easier: */
	hsr->sequence_nr = HSR_SEQNR_START;
	hsr->sup_sequence_nr = HSR_SUP_SEQNR_START;

	init_timer(&hsr->announce_timer);
	hsr->announce_timer.function = hsr_announce;
	hsr->announce_timer.data = (unsigned long) hsr;

	init_timer(&hsr->prune_timer);
	hsr->prune_timer.function = hsr_prune_nodes;
	hsr->prune_timer.data = (unsigned long) hsr;

	ether_addr_copy(hsr->sup_multicast_addr, def_multicast_addr);
	hsr->sup_multicast_addr[ETH_ALEN - 1] = multicast_spec;

	hsr->protVersion = protocol_version;

	/* FIXME: should I modify the value of these?
	 *
	 * - hsr_dev->flags - i.e.
	 *			IFF_MASTER/SLAVE?
	 * - hsr_dev->priv_flags - i.e.
	 *			IFF_EBRIDGE?
	 *			IFF_TX_SKB_SHARING?
	 *			IFF_HSR_MASTER/SLAVE?
	 */

	/* Make sure the 1st call to netif_carrier_on() gets through */
	netif_carrier_off(hsr_dev);

	res = hsr_add_port(hsr, hsr_dev, HSR_PT_MASTER);
	if (res)
		return res;

	res = register_netdevice(hsr_dev);
	if (res)
		goto fail;

	res = hsr_add_port(hsr, slave[0], HSR_PT_SLAVE_A);
	if (res)
		goto fail;
	res = hsr_add_port(hsr, slave[1], HSR_PT_SLAVE_B);
	if (res)
		goto fail;

	hsr->prune_timer.expires = jiffies + msecs_to_jiffies(PRUNE_PERIOD);
	add_timer(&hsr->prune_timer);

	return 0;

fail:
	hsr_for_each_port(hsr, port)
		hsr_del_port(port);

	return res;
}