mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-20 19:23:57 +08:00
211d2f97e9
The callers always pass current to sock_update_classid(). Signed-off-by: Li Zefan <lizefan@huawei.com> Acked-by: Neil Horman <nhorman@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
74 lines
1.6 KiB
C
74 lines
1.6 KiB
C
/*
|
|
* cls_cgroup.h Control Group Classifier
|
|
*
|
|
* Authors: Thomas Graf <tgraf@suug.ch>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU General Public License as published by the Free
|
|
* Software Foundation; either version 2 of the License, or (at your option)
|
|
* any later version.
|
|
*
|
|
*/
|
|
|
|
#ifndef _NET_CLS_CGROUP_H
|
|
#define _NET_CLS_CGROUP_H
|
|
|
|
#include <linux/cgroup.h>
|
|
#include <linux/hardirq.h>
|
|
#include <linux/rcupdate.h>
|
|
|
|
#if IS_ENABLED(CONFIG_NET_CLS_CGROUP)
|
|
struct cgroup_cls_state
|
|
{
|
|
struct cgroup_subsys_state css;
|
|
u32 classid;
|
|
};
|
|
|
|
extern void sock_update_classid(struct sock *sk);
|
|
|
|
#if IS_BUILTIN(CONFIG_NET_CLS_CGROUP)
|
|
static inline u32 task_cls_classid(struct task_struct *p)
|
|
{
|
|
u32 classid;
|
|
|
|
if (in_interrupt())
|
|
return 0;
|
|
|
|
rcu_read_lock();
|
|
classid = container_of(task_subsys_state(p, net_cls_subsys_id),
|
|
struct cgroup_cls_state, css)->classid;
|
|
rcu_read_unlock();
|
|
|
|
return classid;
|
|
}
|
|
#elif IS_MODULE(CONFIG_NET_CLS_CGROUP)
|
|
static inline u32 task_cls_classid(struct task_struct *p)
|
|
{
|
|
struct cgroup_subsys_state *css;
|
|
u32 classid = 0;
|
|
|
|
if (in_interrupt())
|
|
return 0;
|
|
|
|
rcu_read_lock();
|
|
css = task_subsys_state(p, net_cls_subsys_id);
|
|
if (css)
|
|
classid = container_of(css,
|
|
struct cgroup_cls_state, css)->classid;
|
|
rcu_read_unlock();
|
|
|
|
return classid;
|
|
}
|
|
#endif
|
|
#else /* !CGROUP_NET_CLS_CGROUP */
|
|
static inline void sock_update_classid(struct sock *sk)
|
|
{
|
|
}
|
|
|
|
static inline u32 task_cls_classid(struct task_struct *p)
|
|
{
|
|
return 0;
|
|
}
|
|
#endif /* CGROUP_NET_CLS_CGROUP */
|
|
#endif /* _NET_CLS_CGROUP_H */
|