/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
 * netprio_cgroup.h            Control Group Priority set
 *
 * Authors:    Neil Horman <[email protected]>
 */

#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 */