Commit f9d1ce8f authored by Nicolas Dichtel's avatar Nicolas Dichtel Committed by Marcel Holtmann
Browse files

ieee802154: fix netns settings 



6LoWPAN currently doesn't supports x-netns and works only in init_net.

With this patch, we ensure that:
 - the wpan interface cannot be moved to another netns;
 - the 6lowpan interface cannot be moved to another netns;
 - the wpan interface is in the same netns than the 6lowpan interface;
 - the 6lowpan interface is in init_net.

Signed-off-by: default avatarNicolas Dichtel <nicolas.dichtel@6wind.com>
Acked-by: default avatarAlexander Aring <alex.aring@gmail.com>
Signed-off-by: default avatarMarcel Holtmann <marcel@holtmann.org>
parent a715d11e

net/ieee802154/6lowpan/core.c

+4 −2
Original line number Diff line number Diff line
@@ -126,6 +126,7 @@ static void lowpan_setup(struct net_device *dev) 
	dev->header_ops		= &lowpan_header_ops;

	dev->ml_priv		= &lowpan_mlme;

	dev->destructor		= free_netdev;

	dev->features		|= NETIF_F_NETNS_LOCAL;

}



static int lowpan_validate(struct nlattr *tb[], struct nlattr *data[])
@@ -148,10 +149,11 @@ static int lowpan_newlink(struct net *src_net, struct net_device *dev, 


	pr_debug("adding new link\n");



	if (!tb[IFLA_LINK])

	if (!tb[IFLA_LINK] ||

	    !net_eq(dev_net(dev), &init_net))

		return -EINVAL;

	/* find and hold real wpan device */

	real_dev = dev_get_by_index(src_net, nla_get_u32(tb[IFLA_LINK]));

	real_dev = dev_get_by_index(dev_net(dev), nla_get_u32(tb[IFLA_LINK]));

	if (!real_dev)

		return -ENODEV;

	if (real_dev->type != ARPHRD_IEEE802154) {

net/ieee802154/core.c

+1 −0
Original line number Diff line number Diff line
@@ -225,6 +225,7 @@ static int cfg802154_netdev_notifier_call(struct notifier_block *nb, 
	switch (state) {

		/* TODO NETDEV_DEVTYPE */

	case NETDEV_REGISTER:

		dev->features |= NETIF_F_NETNS_LOCAL;

		wpan_dev->identifier = ++rdev->wpan_dev_id;

		list_add_rcu(&wpan_dev->list, &rdev->wpan_dev_list);

		rdev->devlist_generation++;

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