netprio_cgroup.h 1.24 KB
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/*
 * netprio_cgroup.h			Control Group Priority set
 *
 *
 * Authors:	Neil Horman <nhorman@tuxdriver.com>
 *
 * 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 _NETPRIO_CGROUP_H
#define _NETPRIO_CGROUP_H
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#include <linux/cgroup.h>
#include <linux/hardirq.h>
#include <linux/rcupdate.h>

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#if IS_ENABLED(CONFIG_CGROUP_NET_PRIO)
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struct netprio_map {
	struct rcu_head rcu;
	u32 priomap_len;
	u32 priomap[];
};

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static inline u32 task_netprioidx(struct task_struct *p)
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{
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	struct cgroup_subsys_state *css;
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	u32 idx;

	rcu_read_lock();
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	css = task_css(p, net_prio_cgrp_id);
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	idx = css->cgroup->id;
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	rcu_read_unlock();
	return idx;
}
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static inline void sock_update_netprioidx(struct sock_cgroup_data *skcd)
{
	if (in_interrupt())
		return;

	sock_cgroup_set_prioidx(skcd, task_netprioidx(current));
}

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#else /* !CONFIG_CGROUP_NET_PRIO */
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static inline u32 task_netprioidx(struct task_struct *p)
{
	return 0;
}

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static inline void sock_update_netprioidx(struct sock_cgroup_data *skcd)
{
}
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#endif /* CONFIG_CGROUP_NET_PRIO */
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#endif  /* _NET_CLS_CGROUP_H */