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View File Name : netprio_cgroup.h

/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
 * netprio_cgroup.h			Control Group Priority set
 *
 * Authors:	Neil Horman <nhorman@tuxdriver.com>
 */

#ifndef _NETPRIO_CGROUP_H
#define _NETPRIO_CGROUP_H

#include <linux/cgroup.h>
#include <linux/hardirq.h>
#include <linux/rcupdate.h>

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

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

	rcu_read_lock();
	css = task_css(p, net_prio_cgrp_id);
	idx = css->id;
	rcu_read_unlock();
	return idx;
}

static inline void sock_update_netprioidx(struct sock_cgroup_data *skcd)
{
	if (in_interrupt())
		return;

	sock_cgroup_set_prioidx(skcd, task_netprioidx(current));
}

#else /* !CONFIG_CGROUP_NET_PRIO */

static inline u32 task_netprioidx(struct task_struct *p)
{
	return 0;
}

static inline void sock_update_netprioidx(struct sock_cgroup_data *skcd)
{
}

#endif /* CONFIG_CGROUP_NET_PRIO */
#endif  /* _NET_CLS_CGROUP_H */