58 lines
1.3 KiB
C
58 lines
1.3 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>
|
|
#include <net/sock.h>
|
|
|
|
#ifdef CONFIG_CGROUP_NET_CLASSID
|
|
struct cgroup_cls_state {
|
|
struct cgroup_subsys_state css;
|
|
u32 classid;
|
|
};
|
|
|
|
struct cgroup_cls_state *task_cls_state(struct task_struct *p);
|
|
|
|
static inline u32 task_cls_classid(struct task_struct *p)
|
|
{
|
|
u32 classid;
|
|
|
|
if (in_interrupt())
|
|
return 0;
|
|
|
|
rcu_read_lock();
|
|
classid = container_of(task_css(p, net_cls_cgrp_id),
|
|
struct cgroup_cls_state, css)->classid;
|
|
rcu_read_unlock();
|
|
|
|
return classid;
|
|
}
|
|
|
|
static inline void sock_update_classid(struct sock *sk)
|
|
{
|
|
u32 classid;
|
|
|
|
classid = task_cls_classid(current);
|
|
if (classid != sk->sk_classid)
|
|
sk->sk_classid = classid;
|
|
}
|
|
#else /* !CONFIG_CGROUP_NET_CLASSID */
|
|
static inline void sock_update_classid(struct sock *sk)
|
|
{
|
|
}
|
|
#endif /* CONFIG_CGROUP_NET_CLASSID */
|
|
#endif /* _NET_CLS_CGROUP_H */
|