static int ipoib_new_child_link(struct net *src_net, struct net_device *dev,
struct nlattr *tb[], struct nlattr *data[],
struct netlink_ext_ack *extack)
{
struct net_device *pdev;
struct ipoib_dev_priv *ppriv;
u16 child_pkey;
int err;
if (!tb[IFLA_LINK])
return -EINVAL;
pdev = __dev_get_by_index(src_net, nla_get_u32(tb[IFLA_LINK]));
if (!pdev || pdev->type != ARPHRD_INFINIBAND)
return -ENODEV;
ppriv = ipoib_priv(pdev);
if (test_bit(IPOIB_FLAG_SUBINTERFACE, &ppriv->flags)) {
ipoib_warn(ppriv, "child creation disallowed for child devices\n");
return -EINVAL;
}
if (!data || !data[IFLA_IPOIB_PKEY]) {
ipoib_dbg(ppriv, "no pkey specified, using parent pkey\n");
child_pkey = ppriv->pkey;
} else
child_pkey = nla_get_u16(data[IFLA_IPOIB_PKEY]);
err = ipoib_intf_init(ppriv->ca, ppriv->port, dev->name, dev);
if (err) {
ipoib_warn(ppriv, "failed to initialize pkey device\n");
return err;
}
err = __ipoib_vlan_add(ppriv, ipoib_priv(dev),
child_pkey, IPOIB_RTNL_CHILD);
if (err)
return err;
if (data) {
err = ipoib_changelink(dev, tb, data, extack);
if (err) {
unregister_netdevice(dev);
return err;
}
}
return 0;
}
static int ipoib_new_child_link(struct net *src_net, struct net_device *dev,
struct nlattr *tb[], struct nlattr *data[])
{
struct net_device *pdev;
struct ipoib_dev_priv *ppriv;
u16 child_pkey;
int err;
if (!tb[IFLA_LINK])
return -EINVAL;
pdev = __dev_get_by_index(src_net, nla_get_u32(tb[IFLA_LINK]));
if (!pdev)
return -ENODEV;
ppriv = netdev_priv(pdev);
if (test_bit(IPOIB_FLAG_SUBINTERFACE, &ppriv->flags)) {
ipoib_warn(ppriv, "child creation disallowed for child devices\n");
return -EINVAL;
}
if (!data || !data[IFLA_IPOIB_PKEY]) {
ipoib_dbg(ppriv, "no pkey specified, using parent pkey\n");
child_pkey = ppriv->pkey;
} else
child_pkey = nla_get_u16(data[IFLA_IPOIB_PKEY]);
if (child_pkey == 0 || child_pkey == 0x8000)
return -EINVAL;
/*
* Set the full membership bit, so that we join the right
* broadcast group, etc.
*/
child_pkey |= 0x8000;
err = __ipoib_vlan_add(ppriv, netdev_priv(dev), child_pkey, IPOIB_RTNL_CHILD);
if (!err && data)
err = ipoib_changelink(dev, tb, data);
return err;
}
