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path: root/net/6lowpan/6lowpan_i.h
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#ifndef __6LOWPAN_I_H
#define __6LOWPAN_I_H

#include <linux/netdevice.h>

#include <net/6lowpan.h>

/* caller need to be sure it's dev->type is ARPHRD_6LOWPAN */
static inline bool lowpan_is_ll(const struct net_device *dev,
				enum lowpan_lltypes lltype)
{
	return lowpan_dev(dev)->lltype == lltype;
}

extern const struct ndisc_ops lowpan_ndisc_ops;

int addrconf_ifid_802154_6lowpan(u8 *eui, struct net_device *dev);

#ifdef CONFIG_6LOWPAN_DEBUGFS
int lowpan_dev_debugfs_init(struct net_device *dev);
void lowpan_dev_debugfs_exit(struct net_device *dev);

int __init lowpan_debugfs_init(void);
void lowpan_debugfs_exit(void);
#else
static inline int lowpan_dev_debugfs_init(struct net_device *dev)
{
	return 0;
}

static inline void lowpan_dev_debugfs_exit(struct net_device *dev) { }

static inline int __init lowpan_debugfs_init(void)
{
	return 0;
}

static inline void lowpan_debugfs_exit(void) { }
#endif /* CONFIG_6LOWPAN_DEBUGFS */

#endif /* __6LOWPAN_I_H */
cp/ccid.h?h=nds-private-remove&id=7ce7d89f48834cefece7804d38fc5d85382edf77'>7ce7d89f48834cefece7804d38fc5d85382edf77 (diff)
cgroup: don't online subsystems before cgroup_name/path() are operational
While refactoring cgroup creation, a5bca2152036 ("cgroup: factor out cgroup_create() out of cgroup_mkdir()") incorrectly onlined subsystems before the new cgroup is associated with it kernfs_node. This is fine for cgroup proper but cgroup_name/path() depend on the associated kernfs_node and if a subsystem makes the new cgroup_subsys_state visible, which they're allowed to after onlining, it can lead to NULL dereference. The current code performs cgroup creation and subsystem onlining in cgroup_create() and cgroup_mkdir() makes the cgroup and subsystems visible afterwards. There's no reason to online the subsystems early and we can simply drop cgroup_apply_control_enable() call from cgroup_create() so that the subsystems are onlined and made visible at the same time. Signed-off-by: Tejun Heo <tj@kernel.org> Reported-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru> Fixes: a5bca2152036 ("cgroup: factor out cgroup_create() out of cgroup_mkdir()") Cc: stable@vger.kernel.org # v4.6+
Diffstat (limited to 'net/dccp/ccid.h')