/*
* netprio_cgroup.h Control Group Priority set
*
*
* Authors: Neil Horman <[email protected]>
*
* 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
#include <linux/cgroup.h>
#include <linux/hardirq.h>
#include <linux/rcupdate.h>


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

void sock_update_netprioidx(struct sock *sk);

#if IS_BUILTIN(CONFIG_NETPRIO_CGROUP)

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_subsys_id);
idx = css->cgroup->id;
rcu_read_unlock();
return idx;
}

#elif IS_MODULE(CONFIG_NETPRIO_CGROUP)

static inline u32 task_netprioidx(struct task_struct *p)
{
struct cgroup_subsys_state *css;
u32 idx = 0;

rcu_read_lock();
css = task_css(p, net_prio_subsys_id);
if (css)
idx = css->cgroup->id;
rcu_read_unlock();
return idx;
}
#endif

#else /* !CONFIG_NETPRIO_CGROUP */

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

#define sock_update_netprioidx(sk)

#endif /* CONFIG_NETPRIO_CGROUP */

#endif /* _NET_CLS_CGROUP_H */