Exemple #1
0
static int bond_slave_changelink(struct net_device *bond_dev,
				 struct net_device *slave_dev,
				 struct nlattr *tb[], struct nlattr *data[])
{
	struct bonding *bond = netdev_priv(bond_dev);
	struct bond_opt_value newval;
	int err;

	if (!data)
		return 0;

	if (data[IFLA_BOND_SLAVE_QUEUE_ID]) {
		u16 queue_id = nla_get_u16(data[IFLA_BOND_SLAVE_QUEUE_ID]);
		char queue_id_str[IFNAMSIZ + 7];

		/* queue_id option setting expects slave_name:queue_id */
		snprintf(queue_id_str, sizeof(queue_id_str), "%s:%u\n",
			 slave_dev->name, queue_id);
		bond_opt_initstr(&newval, queue_id_str);
		err = __bond_opt_set(bond, BOND_OPT_QUEUE_ID, &newval);
		if (err)
			return err;
	}

	return 0;
}
Exemple #2
0
/**
 * bond_opt_tryset_rtnl - try to acquire rtnl and call __bond_opt_set
 * @bond: target bond device
 * @option: option to set
 * @buf: value to set it to
 *
 * This function tries to acquire RTNL without blocking and if successful
 * calls __bond_opt_set. It is mainly used for sysfs option manipulation.
 */
int bond_opt_tryset_rtnl(struct bonding *bond, unsigned int option, char *buf)
{
	struct bond_opt_value optval;
	int ret;

	if (!rtnl_trylock())
		return restart_syscall();
	bond_opt_initstr(&optval, buf);
	ret = __bond_opt_set_notify(bond, option, &optval);
	rtnl_unlock();

	return ret;
}
Exemple #3
0
static int bond_changelink(struct net_device *bond_dev,
			   struct nlattr *tb[], struct nlattr *data[])
{
	struct bonding *bond = netdev_priv(bond_dev);
	struct bond_opt_value newval;
	int miimon = 0;
	int err;

	if (!data)
		return 0;

	if (data[IFLA_BOND_MODE]) {
		int mode = nla_get_u8(data[IFLA_BOND_MODE]);

		bond_opt_initval(&newval, mode);
		err = __bond_opt_set(bond, BOND_OPT_MODE, &newval);
		if (err)
			return err;
	}
	if (data[IFLA_BOND_ACTIVE_SLAVE]) {
		int ifindex = nla_get_u32(data[IFLA_BOND_ACTIVE_SLAVE]);
		struct net_device *slave_dev;
		char *active_slave = "";

		if (ifindex != 0) {
			slave_dev = __dev_get_by_index(dev_net(bond_dev),
						       ifindex);
			if (!slave_dev)
				return -ENODEV;
			active_slave = slave_dev->name;
		}
		bond_opt_initstr(&newval, active_slave);
		err = __bond_opt_set(bond, BOND_OPT_ACTIVE_SLAVE, &newval);
		if (err)
			return err;
	}
	if (data[IFLA_BOND_MIIMON]) {
		miimon = nla_get_u32(data[IFLA_BOND_MIIMON]);

		bond_opt_initval(&newval, miimon);
		err = __bond_opt_set(bond, BOND_OPT_MIIMON, &newval);
		if (err)
			return err;
	}
	if (data[IFLA_BOND_UPDELAY]) {
		int updelay = nla_get_u32(data[IFLA_BOND_UPDELAY]);

		bond_opt_initval(&newval, updelay);
		err = __bond_opt_set(bond, BOND_OPT_UPDELAY, &newval);
		if (err)
			return err;
	}
	if (data[IFLA_BOND_DOWNDELAY]) {
		int downdelay = nla_get_u32(data[IFLA_BOND_DOWNDELAY]);

		bond_opt_initval(&newval, downdelay);
		err = __bond_opt_set(bond, BOND_OPT_DOWNDELAY, &newval);
		if (err)
			return err;
	}
	if (data[IFLA_BOND_USE_CARRIER]) {
		int use_carrier = nla_get_u8(data[IFLA_BOND_USE_CARRIER]);

		bond_opt_initval(&newval, use_carrier);
		err = __bond_opt_set(bond, BOND_OPT_USE_CARRIER, &newval);
		if (err)
			return err;
	}
	if (data[IFLA_BOND_ARP_INTERVAL]) {
		int arp_interval = nla_get_u32(data[IFLA_BOND_ARP_INTERVAL]);

		if (arp_interval && miimon) {
			netdev_err(bond->dev, "ARP monitoring cannot be used with MII monitoring\n");
			return -EINVAL;
		}

		bond_opt_initval(&newval, arp_interval);
		err = __bond_opt_set(bond, BOND_OPT_ARP_INTERVAL, &newval);
		if (err)
			return err;
	}
	if (data[IFLA_BOND_ARP_IP_TARGET]) {
		struct nlattr *attr;
		int i = 0, rem;

		bond_option_arp_ip_targets_clear(bond);
		nla_for_each_nested(attr, data[IFLA_BOND_ARP_IP_TARGET], rem) {
			__be32 target;

			if (nla_len(attr) < sizeof(target))
				return -EINVAL;

			target = nla_get_be32(attr);

			bond_opt_initval(&newval, (__force u64)target);
			err = __bond_opt_set(bond, BOND_OPT_ARP_TARGETS,
					     &newval);
			if (err)
				break;
			i++;
		}
		if (i == 0 && bond->params.arp_interval)
			netdev_warn(bond->dev, "Removing last arp target with arp_interval on\n");
		if (err)
			return err;
	}